Part of #663: Cmd+, opens Settings on the Mac

Cmd+, is how every Mac app opens its settings. It now opens Preferences on
macOS beside its own Cmd+K, unless a command or one of the user's shortcuts
already has the chord.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

ROADMAP.md

@@ -4,7 +4,7 @@ VectorCraft is a clean-room, open-source, pure-Rust reimplementation of the Adob
 
 This file tracks **how far we are and what's left**. Time estimates are wall-clock hours of continuous Claude Opus 5.5 agent work (including builds and the CI gate), given both for **one agent** and for **4–6 parallel agents** on disjoint crates. They are counted from the remaining work (see [Parity estimate](#parity-estimate)), calibrated against measured throughput, and updated as work lands.
 
-_Last updated: 2026-10-09 (after placed documents (File › Place of a `.vectorcraft` file, linked), M4.14–M4.98, M8.1–M8.20, M14.4–M14.7, the MCP prompts, resource templates, completions and logging, the 2026-10-07 issue fixes, the Layers panel rework and the 2026-10-08 community contributions: Pen and shape-tool modifiers, path editing, Layers, Artboards, Swatches/Brushes and dialogs, Japanese composition and PDF text, Hebrew/Arabic type, interface languages (Spanish among them), the font menu, saved selections, MCP and EPS, the missing-font export warning (#319), open paths in the Shape Builder (#374), PDF/`.ai` import keeping strokes live and hidden and nested layers (#372), per-corner Live Corners (#381), SVG type opening at the size it draws at (#396), the Wayland clipboard with copied-file paste (#398), ruler guides that can be selected, moved and deleted (#414), two batches of Preferences options that were stored but unused (#394), skeleton reads with `document.find` for large documents over MCP (#416) and anchors dragged with Direct Selection snapping to points, segments and smart guides, clipped SVG layers opening as clipping layers (#420), PDF/`.ai` layers read on pages of tens of millions of operators (#419), Document Color Mode putting RGB greys on the black plate on request and converting pattern tiles (#421) and movable dialogs with Offset Path's Joins dropdown (#423) and numeric fields scrubbed by dragging their label (#400), stroke weight presets in the stroke unit (#426), the Appearance panel's Opacity popup (#430), type on a path brackets, flip and Type on a Path Options that keep the type in place (#429), Layers rows dragged with a ghost and dropped on the trash or New Layer (#435), tool flyouts opening on a right or corner press (#436), tool flyouts torn off into floating toolbars (#437), the Shape Builder's erase mode deleting edges too (#439), installed fonts registered outside the font folders and fonts installed while the app runs listed in the font menus (#443), alike circular corners on rectangles that aren't square (#442), tool cursors as OS cursors so the pointer no longer trails over the canvas (#444), artboards copied and pasted with their art (#446), guides dragged out of the rulers snapping to the art's side midpoints and the artboards, artboard guides (#451), the toolbar's double arrow and Window › Toolbars › Double Column switching between one and two columns in any window height (#455), the Smart Guides display options and Snapping Tolerance (#394), Font Size and Leading combo boxes with preset lists in the Character and Properties panels and the Control bar (#458), screenshots pasted from the clipboard on macOS, Windows and the web (#457), the Properties panel's Fill and Stroke matching the Control bar's, Illustrator's Window menu panel keys (Shift+F7 for Align…) and Alt-wheel zoom whatever the wheel preference (Discord feedback), the point/area type widget (Discord feedback), groups in legacy Illustrator .ai files (Discord feedback), a rotating desktop log file (#465), image controls in the Control bar and Properties panel: Image Trace with its presets, Mask, Crop Image, Embed/Unembed, and an Image Trace object's preset, Expand and Release (Discord feedback), the Pen working as the Anchor Point tool with Alt held over a selected path's handles and anchors, and anchor buttons that convert, connect and cut paths at the selected anchors (Discord feedback), Japanese hanging punctuation (burasagari, #463), Escape leaving Presentation Mode with no screen mode saved across restarts, documents dropped on the desktop app opening as tabs of their own and a note that an `.ai` file's art off its artboards isn't in the part read (#472), Add/Delete Anchor Point tool icons drawn from the Pen tool's (#479), EPS import running more of PostScript Level 3 (patterns, Type 3 fonts, mesh shadings, masked images, VM and resource probes), and a preview that stands in saying why (Discord feedback, #466, #469, #474), chords with modifiers recorded in Edit › Keyboard Shortcuts (#487), Type Object Selection by Path Only (#394), Anti-aliased Artwork (#394), Show Pixel Grid (#394), pen and touch taps pressed and lifted within one frame clicking where they tapped and the Linux/Wayland pen-tablet workaround (#491), bounding-box resizes landing on the other objects' anchors and centres with labels, and the Rotate, Scale, Shear and Reflect tools snapping their drags (#482), Shift-drag marquees that toggle the objects or anchors they reach and a Lasso whose Alt subtraction keeps the rest of the selection (#483), the mouse wheel stepping the focused numeric field, the dialogs' and preferences' drag values made such fields (#485), Show The Home Screen When No Documents Are Open (#394), Numbers Without Units Are Points (#394), Auto-Collapse Iconic Panels (#394), the Contextual Task Bar moved by its handle and its More Options menu pinning and resetting its position, a designed macOS DMG windoLine truncated
+_Last updated: 2026-10-09 (after placed documents (File › Place of a `.vectorcraft` file, linked), M4.14–M4.98, M8.1–M8.20, M14.4–M14.7, the MCP prompts, resource templates, completions and logging, the 2026-10-07 issue fixes, the Layers panel rework and the 2026-10-08 community contributions: Pen and shape-tool modifiers, path editing, Layers, Artboards, Swatches/Brushes and dialogs, Japanese composition and PDF text, Hebrew/Arabic type, interface languages (Spanish among them), the font menu, saved selections, MCP and EPS, the missing-font export warning (#319), open paths in the Shape Builder (#374), PDF/`.ai` import keeping strokes live and hidden and nested layers (#372), per-corner Live Corners (#381), SVG type opening at the size it draws at (#396), the Wayland clipboard with copied-file paste (#398), ruler guides that can be selected, moved and deleted (#414), two batches of Preferences options that were stored but unused (#394), skeleton reads with `document.find` for large documents over MCP (#416) and anchors dragged with Direct Selection snapping to points, segments and smart guides, clipped SVG layers opening as clipping layers (#420), PDF/`.ai` layers read on pages of tens of millions of operators (#419), Document Color Mode putting RGB greys on the black plate on request and converting pattern tiles (#421) and movable dialogs with Offset Path's Joins dropdown (#423) and numeric fields scrubbed by dragging their label (#400), stroke weight presets in the stroke unit (#426), the Appearance panel's Opacity popup (#430), type on a path brackets, flip and Type on a Path Options that keep the type in place (#429), Layers rows dragged with a ghost and dropped on the trash or New Layer (#435), tool flyouts opening on a right or corner press (#436), tool flyouts torn off into floating toolbars (#437), the Shape Builder's erase mode deleting edges too (#439), installed fonts registered outside the font folders and fonts installed while the app runs listed in the font menus (#443), alike circular corners on rectangles that aren't square (#442), tool cursors as OS cursors so the pointer no longer trails over the canvas (#444), artboards copied and pasted with their art (#446), guides dragged out of the rulers snapping to the art's side midpoints and the artboards, artboard guides (#451), the toolbar's double arrow and Window › Toolbars › Double Column switching between one and two columns in any window height (#455), the Smart Guides display options and Snapping Tolerance (#394), Font Size and Leading combo boxes with preset lists in the Character and Properties panels and the Control bar (#458), screenshots pasted from the clipboard on macOS, Windows and the web (#457), the Properties panel's Fill and Stroke matching the Control bar's, Illustrator's Window menu panel keys (Shift+F7 for Align…) and Alt-wheel zoom whatever the wheel preference (Discord feedback), the point/area type widget (Discord feedback), groups in legacy Illustrator .ai files (Discord feedback), a rotating desktop log file (#465), image controls in the Control bar and Properties panel: Image Trace with its presets, Mask, Crop Image, Embed/Unembed, and an Image Trace object's preset, Expand and Release (Discord feedback), the Pen working as the Anchor Point tool with Alt held over a selected path's handles and anchors, and anchor buttons that convert, connect and cut paths at the selected anchors (Discord feedback), Japanese hanging punctuation (burasagari, #463), Escape leaving Presentation Mode with no screen mode saved across restarts, documents dropped on the desktop app opening as tabs of their own and a note that an `.ai` file's art off its artboards isn't in the part read (#472), Add/Delete Anchor Point tool icons drawn from the Pen tool's (#479), EPS import running more of PostScript Level 3 (patterns, Type 3 fonts, mesh shadings, masked images, VM and resource probes), and a preview that stands in saying why (Discord feedback, #466, #469, #474), chords with modifiers recorded in Edit › Keyboard Shortcuts (#487), Type Object Selection by Path Only (#394), Anti-aliased Artwork (#394), Show Pixel Grid (#394), pen and touch taps pressed and lifted within one frame clicking where they tapped and the Linux/Wayland pen-tablet workaround (#491), bounding-box resizes landing on the other objects' anchors and centres with labels, and the Rotate, Scale, Shear and Reflect tools snapping their drags (#482), Shift-drag marquees that toggle the objects or anchors they reach and a Lasso whose Alt subtraction keeps the rest of the selection (#483), the mouse wheel stepping the focused numeric field, the dialogs' and preferences' drag values made such fields (#485), Show The Home Screen When No Documents Are Open (#394), Numbers Without Units Are Points (#394), Auto-Collapse Iconic Panels (#394), the Contextual Task Bar moved by its handle and its More Options menu pinning and resetting its position, a designed macOS DMG windoLine truncated
 
 ## Where we are
 
@@ -109,7 +109,7 @@ grade by behaviour against `plan/illustrator/`, not by whether a menu item exist
   - A canvas context menu: right-click selects the object under the pointer and lists what applies to the selection (Undo/Redo, clipboard, group, isolation, join, Remove Anchor Points when anchors are selected, masks, compound paths, guides, Transform, Arrange, Select, Export Selection), or the view commands on empty canvas.
   - Save / Don't Save / Cancel before closing or quitting with unsaved documents (tabs, Close, Close All, Quit, window close).
   - Four brightness themes, persistent preferences.
-  - Preferences that act (#394, in part): Show Tool Tips, Double Click To Isolate, Zoom with Mouse Wheel (the wheel zooms about the pointer, Shift-wheel scrolls up and down, Cmd/Ctrl-wheel sideways; Alt/Option-wheel and a trackpad pinch zoom about the pointer either way), Use Precise Cursors; Selection & Anchor Display › Tolerance (objects, anchors and handles), Object Selection by Path Only, Command Click to Select Objects Behind (cycling down the stack), Zoom to Selection, anchor Size, Highlight anchors on mouse over; Type › Number of Recent Fonts (up to 15); Guides & Grid › guide and grid Color and Style (lines or dots) and Grids In Back. Then Snap to Point (its distance, for moves, drawn points and reference points), Move Locked and Hidden Artwork with Artboard, Enable Rubber Band for the Pen and Curvature tools, Handles style, Show handles when multiple anchors are selected, Hide Corner Widget for angles greater than; General › Transform Pattern Tiles (the transforms' and dialogs' Transform Patterns) and Select Same Tint %; Type › Size/Leading, Tracking and Baseline Shift increments (`type.step`, Cmd+Shift+. and Cmd+Shift+, for the size, the Type tool's Alt+arrows), Enable Missing Glyph Protection and Fill New Type Objects With Placeholder Text. Then Smart Guides › Color, Alignment Guides, Anchor/Path Labels, Measurement Labels, Transform Tools, Object Highlighting (with Smart Guides on) and Snapping Tolerance (4 px by default, for every smart guide snap), then Construction Guides and their Angles (#506: a drawn point near a line at one of those angles through the point it leaves from lands on it). Then Type › Type Object Selection by Path Only (type is picked on the baseline of any of its lines, area type's frame or the path of type on a path, no longer anywhere in its bounds; the Type tools and the Eyedropper still take a click among the characters). Then General › Anti-aliased Artwork (off, the canvas draws the art with hard edges). Then Guides & Grid › Show Pixel Grid (Above 600% Zoom), a line at every document pixel over the art in Pixel Preview, turning with a rotated view as the document grid now does too. Then General › Show The Home Screen When No Documents Are Open (off, closing the last document leaves an empty window; the Home button still opens the screen). Then Units › Numbers Without Units Are Points (on by default: a number typed with no unit into a field in picas is read in points, a typed unit still wins; dimmed unless a unit is Picas). Then User Interface › Auto-Collapse Iconic Panels (off by default: on, a click away from a panel popped out of the icon column puts it away). They reach agents too (`prefs.set`, then `pointer_gesture` or `press_key`; `ui.wheel` on the control channel). About 30 stored options still do nothing yet (the rest of #394: Auto Size New Area Type, Show Font Names in English, Highlight Alternate Glyphs, Spacing Guides, performance, devices…).
+  - Preferences that act (#394, in part): Show Tool Tips, Double Click To Isolate, Zoom with Mouse Wheel (the wheel zooms about the pointer, Shift-wheel scrolls up and down, Cmd/Ctrl-wheel sideways; Alt/Option-wheel and a trackpad pinch zoom about the pointer either way), Use Precise Cursors; Selection & Anchor Display › Tolerance (objects, anchors and handles), Object Selection by Path Only, Command Click to Select Objects Behind (cycling down the stack), Zoom to Selection, anchor Size, Highlight anchors on mouse over; Type › Number of Recent Fonts (up to 15); Guides & Grid › guide and grid Color and Style (lines or dots) and Grids In Back. Then Snap to Point (its distance, for moves, drawn points and reference points), Move Locked and Hidden Artwork with Artboard, Enable Rubber Band for the Pen and Curvature tools, Handles style, Show handles when multiple anchors are selected, Hide Corner Widget for angles greater than; General › Transform Pattern Tiles (the transforms' and dialogs' Transform Patterns) and Select Same Tint %; Type › Size/Leading, Tracking and Baseline Shift increments (`type.step`, Cmd+Shift+. and Cmd+Shift+, for the size, the Type tool's Alt+arrows), Enable Missing Glyph Protection and Fill New Type Objects With Placeholder Text. Then Smart Guides › Color, Alignment Guides, Anchor/Path Labels, Measurement Labels, Transform Tools, Object Highlighting (with Smart Guides on) and Snapping Tolerance (4 px by default, for every smart guide snap), then Construction Guides and their Angles (#506: a drawn point near a line at one of those angles through the point it leaves from lands on it). Then Type › Type Object Selection by Path Only (type is picked on the baseline of any of its lines, area type's frame or the path of type on a path, no longer anywhere in its bounds; the Type tools and the Eyedropper still take a click among the characters). Then General › Anti-aliased Artwork (off, the canvas draws the art with hard edges). Then Guides & Grid › Show Pixel Grid (Above 600% Zoom), a line at every document pixel over the art in Pixel Preview, turning with a rotated view as the document grid now does too. Then General › Show The Home Screen When No Documents Are Open (off, closing the last document leaves an empty window; the Home button still opens the screen). Then Units › Numbers Without Units Are Points (on by default: a number typed with no unit into a field in picas is read in points, a typed unit still wins; dimmed unless a unit is Picas). Then User Interface › Auto-Collapse Iconic Panels (off by default: on, a click away from a panel popped out of the icon column puts it away). Then Performance › Animated Zoom (on, with GPU Performance, which it needs and which dims it when off: the Zoom tool dragged sideways zooms about the press, right in and left out, and held still zooms on, Alt out; off, a drag zooms to the area dragged across, now drawn as a marquee), User Interface › Large Tabs (taller document tabs) and Scale Cursor Proportional to UI (off, the tool cursors keep their size whatever the UI Scaling), and File Handling › Display Bitmaps as Anti-aliased Images in Pixel Preview (off by default: Pixel Preview draws images with each pixel taking its nearest image pixel). Type › Auto Size New Area Type works too (new area type gets Auto Size). They reach agents too (`prefs.set`, then `pointer_gesture` or `press_key`; `ui.wheel` on the control channel). Then Smart Guides › Spacing Guides (moves space the selection evenly with its row or column, see Drawing aids). About 20 stored options still do nothing yet (the rest of #394: Show Font Names in English, Highlight Alternate Glyphs, Display Print Size at 100% Zoom, Identify Objects By, East Asian Type units, Open Documents As Tabs, Real-time Drawing and Editing, GPU Performance beyond Animated Zoom, hyphenation, scratch disks, the legacy clipboard, Appearance of Black, Touch Workspace).
   - Dialogs move by dragging their heading (the band down from the top edge, as a title bar), stay on screen and keep where they were moved for the session; the form dialogs' choices are dropdowns (Offset Path's Joins, Average's and Shear's and Reflect's axis), and Offset Path lists Offset, Joins, Miter Limit and previews (#423).
   - Dialogs open with their first field focused and its value selected: type a value and press Enter (Move, Rotate, Scale…). Number fields in panels, the Control bar and dialogs (preferences too) step with Up/Down, or with the mouse wheel over the focused field (#485: a notch a step; the panel under it then stays put, and an unfocused field leaves the wheel to scrolling) (Shift: ten, Ctrl/Cmd: a tenth of their unit), applied at once.
   - Scrubby labels (#400, beyond Illustrator, as in Photoshop): dragging a numeric field's label left or right (the ↔ cursor shows over it) steps the value one unit every 2 points (Shift: ten, Ctrl/Cmd: a tenth; counts stay whole), in the field's unit and within its limits, applied live as the art follows; the whole drag is one undo step and Escape puts the value back. A click on the label focuses the field; the text box itself never scrubs, and a field with no label doesn't. Text labels before a field (Transform, Properties, Control bar, Stroke, Transparency, form rows in dialogs) and the Character and Paragraph panels' icons act as labels. Preferences › General › Scrub Numeric Fields by Dragging (on by default) turns it off.
@@ -129,13 +129,13 @@ grade by behaviour against `plan/illustrator/`, not by whether a menu item exist
   - **Pen:** Alt pressed in the middle of dragging out an anchor splits its handles and keeps the curve already shaped into it (only the outgoing handle follows the pointer); Space held while dragging out an anchor moves it, handles and all. A press on the first anchor of the path being drawn closes it whatever the drag then does: the drag shapes the closing curve (symmetric handles, Alt breaks them) and the release closes the path wherever it ends (#501). Clicking the last anchor of the path being drawn retracts its outgoing handle (convert cursor), and dragging from it pulls out a new one on its own. Auto Add/Delete: over a selected path, a click on a segment adds an anchor and a click on an anchor deletes it (add and delete cursors); Shift held, or Preferences › General › Disable Auto Add/Delete, starts a new path instead. Alt held over a handle end or an anchor of a selected path (the one being drawn too) works as the Anchor Point tool, with its convert cursor: dragging a handle moves it alone, clicking a smooth anchor makes it a corner, dragging an anchor pulls out new symmetric handles, dragging a segment reshapes it; drawing then goes on. Cmd (Ctrl) held drags with the selection tool chosen last, Direct Selection until one is (handles, anchors and segments of the path being drawn or another), and the Pen then goes on drawing its path while that stays selected; the pointer shows that tool's while Cmd is held. The same holds for agents (`pointer_gesture` with `mods.cmd`), as the borrowing now lives in the engine (#494).
   - **Path editing (#494):** the handles shown are the handles that drag: Direct Selection drags those of a path selected as a whole (as the Pen leaves it), the Anchor Point tool and Pen+Alt no longer grab handles that Show handles when multiple anchors are selected hides, a handle shorter than the tolerance leaves its anchor to be picked, and the anchor tools pick within Selection & Anchor Display › Tolerance. A dragged segment keeps a smooth anchor at either end smooth. With Direct Selection, the Pen, the Curvature and the anchor tools, a path selected as a whole shows all its anchors selected, and the Control bar and the Properties panel offer Convert (corner, smooth) for them too; Remove and Cut wait for anchors direct-selected (#504). A handle drag gathers its snap targets once per drag (it took 21 ms per pointer move on a 20,000-path document, now 1 ms; `vectorcraft-cli perf` measures handle and segment drags on a 5,000-anchor path).
   - **Graphs:** Column, Stacked Column, Bar, Stacked Bar, Line, Area, Scatter, Pie and Radar graph tools with Graph Data and Graph Type.
-  - **Other:** Eyedropper, Gradient annotator, Artboard (Alt-drag duplicates an artboard, and its art with Move/Copy Artwork with Artboard on; Copy, Cut and Paste take the artboard with its art, Paste right of the last artboard, Paste in Place where it was, into this or another document, #446), Measure, Type, Hand, Zoom, Rotate View.
+  - **Other:** Eyedropper, Gradient annotator, Artboard (Alt-drag duplicates an artboard, and its art with Move/Copy Artwork with Artboard on; Copy, Cut and Paste take the artboard with its art, Paste right of the last artboard, Paste in Place where it was, into this or another document, #446; Object › Artboards › Rearrange All Artboards lays them out in a grid by row or by column, in one row or one column, left to right or right to left, from the menu, the Artboards panel or Properties' Rearrange All, #681), Measure, Type, Hand, Zoom, Rotate View.
   - **Editing type:** double-clicking type with a selection tool switches to the Type tool with the caret where it was clicked.
   - **Temporary tools:** Cmd with any other tool drags with the selection tool used last (Selection, Direct Selection or Group Selection). Held Space pans and Cmd+Space zooms (Cmd+Alt+Space out) whatever the tool.
   - **Panel drag and drop:** art dragged off the canvas onto the Symbols panel becomes a symbol, onto the Swatches panel a pattern swatch and onto the Brushes panel an Art brush; a symbol dragged onto the canvas places an instance where it is dropped, and a brush dragged onto a path is applied to it.
   - **Tool double-clicks:** double-clicking a tool's button opens its options: Hand fits the artboard in the window, Zoom shows 100 %, Rotate, Scale, Reflect and Shear open their Object › Transform dialogs, the Selection, Direct Selection and Group Selection tools the Move dialog (Enter opens these seven tools' dialogs too), Gradient, Eyedropper, Blend and the Liquify tools their panels or options, and the Pencil, Paintbrush, Smooth, Blob Brush and Eraser tools their Tool Options (Fidelity, fill, the tolerances, the brush size).
 - **Layers panel:** every layer, sublayer, group and object is a clickable row at any depth: a click highlights it and makes its layer current (new art goes there), Shift-click a range, Ctrl/Cmd-click toggles. Sublayers are no longer treated as objects: clicks, marquees, Select All and the Select menu take the art inside them, and each sublayer selects in its own colour. Selection squares on rows with selected art (click selects a row's art, Shift adds or removes; dragging the square moves the selection to another row, Alt copies), the eye and lock on every row with drag-down-the-column (one undo step), Ctrl/Cmd-click an eye for per-layer Outline, Alt-click an eye or lock to hide or lock the other layers (again: show or unlock them all), triangles with Alt to open or close everything inside, drag and drop rows above, below or into layers and groups with a drop line (Alt copies) and a dimmed copy of the row under the pointer (dropped on the trash rows are deleted, on New Layer duplicated, as in Illustrator), inline rename, Delete key on highlighted rows. Buttons and the full panel menu: New Layer/Sublayer (Alt: options, Ctrl: on top), Duplicate, Delete, Options for Selection, clipping mask, isolation, Locate Object, Merge Selected, Flatten Artwork, Collect in New Layer, Release to Layers (Sequence and Build), Reverse Order, Template, Hide/Outline/Lock Others and Show/Preview/Unlock All, Paste Remembers Layers, Panel Options (row size, thumbnails per kind, Show Layers Only). Layer Options: name, colour (presets, each with a chip of its colour, or custom), Template, Lock, Show, Print, Preview (outline drawing and clicking) and Dim Images to %. Every operation is a command (`layer.move`, `layer.highlight`, `layer.merge`…) with validation against cycles and invalid nesting. A document opens with only its top-level layers open; the rows left open are saved in the native file (nothing is written for the default) and reopen that way. Only the rows scrolled into view are laid out, from a row list made once per change: a layer of 5,000 groups of 10 paths, all open, draws the panel in 0.4 ms a frame instead of about 29 s (#638).
-- **Drawing aids:** Smart Guides and snapping (moving, with the Selection, Group Selection or Direct Selection tool, and resizing by the bounding-box handles with the Selection or Free Transform tool, Shift and Alt too: the dragged corner or side lands on the other objects' anchors and centres ("anchor", "center") or lines up with their edges and centres (a line and "align"); the Rotate, Scale, Shear and Reflect tools drag from the anchor they grab and snap the pointer the same way, so a corner dragged onto another object's anchor scales exactly onto it, #482; anchors dragged with Direct Selection: the one pressed on lands on other anchors, its own path's that stay put among them, on path segments or in line with them, the others following, Shift keeps 45° steps, and with Smart Guides off Snap to Point pulls it onto anchors; the Artboard tool snaps artboards, and their bleed, to other artboards, bleeds and art, the grid or whole pixels while moving, copying and resizing them, and the Transform panel shows and edits the active artboard's X/Y/W/H; drawn points, #506: hovering shows where the press goes, the point lands on the other objects' anchors, centres and paths ("anchor", "center", "path") or lines up with their anchors, edges and centres ("align"), the Pen's on the path being drawn too, near a construction guide through the anchor before it on that guide (Preferences › Smart Guides › Construction Guides and Angles), and with Shift kept to its 45° step or a square's diagonal it slides along that way into line; the targets are gathered once per document state, from the art in the window, and the anchors, centres and lines near the pointer are found by bisection, so hovering never rescans the document), guides dragged out of the rulers (#451: they snap as moved guides do, Shift to the ruler's ticks; with the Artboard tool they are artboard guides, which run across their artboard only and move, copy and delete with it, `guide.add {artboard}`) that the Selection, Direct Selection and Group Selection tools then pick and drag (#414: the selected guides highlight and move together, Alt copies them, Shift snaps the dragged one to the ticks, otherwise it snaps to pixels, the grid or the edges, centres (so the sides' midpoints) and anchors of the art and the artboards, or with Smart Guides off Snap to Point pulls it onto anchors; the arrow keys nudge them, Delete deletes them, dragging one back onto its ruler deletes it, Lock Guides and Hide Guides leave them alone; `guide.list`, `guide.select`, `guide.move` and `guide.remove` reach agents), a right-click on either ruler or the origin box to pick the document's units (the current one checked; `document.setUnits`, one undo step, #528), and Draw Normal / Behind / Inside modes.
+- **Drawing aids:** Smart Guides and snapping (moving, with the Selection, Group Selection or Direct Selection tool, and resizing by the bounding-box handles with the Selection or Free Transform tool, Shift and Alt too: the dragged corner or side lands on the other objects' anchors and centres ("anchor", "center") or lines up with their edges and centres (a line and "align"); with Smart Guides › Spacing Guides, a moved selection that lines up with nothing along an axis lands as far from its neighbour as two other objects of its row or column are apart, or halfway between its two neighbours, the equal gaps marked; the Rotate, Scale, Shear and Reflect tools drag from the anchor they grab and snap the pointer the same way, so a corner dragged onto another object's anchor scales exactly onto it, #482; anchors dragged with Direct Selection: the one pressed on lands on other anchors, its own path's that stay put among them, on path segments or in line with them, the others following, Shift keeps 45° steps, and with Smart Guides off Snap to Point pulls it onto anchors; the Artboard tool snaps artboards, and their bleed, to other artboards, bleeds and art, the grid or whole pixels while moving, copying and resizing them, and the Transform panel shows and edits the active artboard's X/Y/W/H; drawn points, #506: hovering shows where the press goes, the point lands on the other objects' anchors, centres and paths ("anchor", "center", "path") or lines up with their anchors, edges and centres ("align"), the Pen's on the path being drawn too, near a construction guide through the anchor before it on that guide (Preferences › Smart Guides › Construction Guides and Angles), and with Shift kept to its 45° step or a square's diagonal it slides along that way into line; the targets are gathered once per document state, from the art in the window, and the anchors, centres and lines near the pointer are found by bisection, so hovering never rescans the document), guides dragged out of the rulers (#451: they snap as moved guides do, Shift to the ruler's ticks; with the Artboard tool they are artboard guides, which run across their artboard only and move, copy and delete with it, `guide.add {artboard}`) that the Selection, Direct Selection and Group Selection tools then pick and drag (#414: the selected guides highlight and move together, Alt copies them, Shift snaps the dragged one to the ticks, otherwise it snaps to pixels, the grid or the edges, centres (so the sides' midpoints) and anchors of the art and the artboards, or with Smart Guides off Snap to Point pulls it onto anchors; the arrow keys nudge them, Delete deletes them, dragging one back onto its ruler deletes it, Lock Guides and Hide Guides leave them alone; `guide.list`, `guide.select`, `guide.move` and `guide.remove` reach agents), a right-click on either ruler or the origin box to pick the document's units (the current one checked; `document.setUnits`, one undo step, #528), and Draw Normal / Behind / Inside modes.
 - **Views:** the status bar's artboard navigator (first, previous, next, last; `view.goToArtboard`) goes to an artboard and fits it, and Fit Artboard in Window and Actual Size show the navigator's artboard. The Artboards panel highlights that active artboard: clicking a row makes it active (the Artboard tool's too, while it is chosen) as does clicking an artboard with the Artboard tool, double-clicking its number also fits it in the window and double-clicking its name renames it. Duplicate Artboards, or a row dragged onto New Artboard, copies the artboard with its art (#446). Escape leaves Presentation Mode, F from it goes back to Normal Screen Mode, and the screen mode isn't saved with the preferences: the app always starts in Normal Screen Mode with its menus and panels (#472). View › Pixel Preview shows the art as the document pixels it rasterizes to, one per point and hard-edged when magnified, turning with a rotated view (it used to draw the smooth vectors, with only the pixel grid over them).
 - **Geometry and effects:**
   - Pathfinder (10 exact curve booleans), Offset, Outline Stroke, Simplify, Clean Up, Split Into Grid, Divide Objects Below. Object › Path › Remove Anchor Points (`path.removeAnchors`) removes the direct-selected anchors without opening their paths (the Delete key still deletes them with their segments): the neighbours keep their handle directions and their facing handles are refitted so one cubic follows the two old segments, and straight sides stay straight. The Delete Anchor Point tool uses the same refit. The Control bar, the contextual task bar, the Properties quick actions and the canvas context menu offer it when anchors are selected. With anchors selected, the Control bar and the Properties panel also convert them to corner or smooth (`path.convertAnchors`), connect end points (Join) and cut the path at them (`path.cutAtAnchors`, also on the task bar and the context menu): a closed path opens there and an open one becomes one path per piece, each cut leaving one of its two coincident anchors selected so a drag pulls the path apart.
@@ -143,10 +143,10 @@ grade by behaviour against `plan/illustrator/`, not by whether a menu item exist
 - **Type:** Text Wrap, Type on a Path effects (Rainbow/Skew/3D Ribbon/Stair Step/Gravity) and Options (Flip, Align to Path, Spacing; OK keeps the type where it is), type on a path's start, centre and end brackets (Selection and Direct Selection drag them to set where the type runs, slide it along its path and, across the path, flip it: #429), Character and Paragraph Styles (override-preserving redefine), paragraph attributes per paragraph (alignment, indents, spacing, hyphenation, hanging punctuation, tab stops, paragraph style, direction, mojikumi and leading model; the Paragraph, Tabs and Paragraph Styles panels act on the paragraphs the Type tool's selection or caret touches, Return continues the paragraph's style, threads and SVG keep them), Area Type Options (rows/columns/inset/first baseline, vertical Align Top/Center/Bottom/Justify per row/column, reflowing non-rectangular frames and text wrap), threaded text across any closed shapes, Fit Headline, the Every-line Composer for justified and ragged text (paragraph-wide breaks for an even rag, Single-line per object from the Paragraph panel menu or `text.setFormat {composer}`). Area type resizes like Illustrator's type areas: a bounding-box handle drag (Selection tool) or Area Type Options Width/Height size the frame and the text reflows at its size (threads too); Direct Selection drags a frame corner or edge (`text.reshapeArea`). Point type still scales. Auto Size: the frame height follows the text after every edit, in the same undo step (rectangular frames of horizontal type in one row; columns get the least height that holds them; a height set by hand or threading turns it off), and the "Auto Size New Area Type" preference gives it to new area type. Shrink Text to Fit (beyond Illustrator): overflowing area type scales its sizes, leading and baseline shifts down by the largest factor (in 0.1 pt steps of the first run, down to a minimum percentage) that fits, at layout time so every export sees it. `text.areaOptions` and `document.inspect` report overflow and the shrink factor. The Selection tool shows the type widget beside selected type's bounding box (hollow on point type, filled on area type); double-clicking it converts between them (Type › Convert To Area Type / Convert To Point Type), keeping the text and its styles in place. Variable fonts list every named instance as a style of their family (Figtree Light to Black and their italics, Bahnschrift, Segoe UI Variable), and the instance chosen is shaped, drawn, outlined and measured at its axis settings; PDF and SVG embed it as that instance. Variation axis sliders are not done. Beyond Illustrator: inline graphics (`text.insertInline`, Type ▸ Insert Inline Symbol) set a document symbol in a run of type as one character that flows, wraps and justifies like a glyph (InDesign-style inline objects, e.g. mana symbols in card rules text): sized to a multiple of the font size, centred on the cap height, opening up tall lines, following Redefine Symbol; a character of its run's size for Character Alignment and Top-to-Top leading, placed by the bidi reordering in right-to-left text (a neutral U+FFFC); drawn on the canvas, kept as live text plus a `<use>` in SVG and as vector art in PDF; Backspace removes it whole. Hebrew and Arabic are laid out right to left with the Unicode bidirectional algorithm (embedded Latin and numbers keep their direction, lines put in visual order after wrapping) in point, area and path type, with caret, selection and arrow keys in visual order; each paragraph's direction comes from its first strong character unless Paragraph Direction sets it (Paragraph panel with Show Indic Options, `text.setFormat {direction}`), and new type aligns to the start of its direction. SVG export outlines right-to-left text. Font Size and Leading are combo boxes in the Character and Properties panels (Font Size in the Control bar too, beside the Character link, font family and style): type, step with ↑/↓ or the spinner, scrub the label, or pick a preset (6–72 pt, shown in the type unit; Leading also Auto), each pick one undo step; Kerning and Tracking list -100…200; a size, leading, kerning or tracking the selected text doesn't share shows blank (#458).
 - **Interface languages, vertical type:** VectorCraft ▸ Language (or Preferences ▸ User Interface) picks Automatic (the system locale) or a registered language, persisted as `interfaceLanguage`. Translations come from per-language catalogs (`i18n/*.tsv`): Traditional and Simplified Chinese, Japanese, Spanish (neutral international Spanish, for every `es-*` locale), French (every `fr-*` locale), Italian (every `it-*` locale) and Russian (every `ru-*` locale) cover the whole interface, Czech and Brazilian Portuguese every menu label, Brazilian Portuguese the shell's `tl!` literals too (tested); Spanish, French, Italian and Russian also translate status-bar and error messages as they are shown (`@msg` templates, every message literal tested; the messages themselves stay English for agents); untranslated text stays English. Japanese and Chinese glyphs come from the craft-fonts build input (release builds) or the installed fonts, Czech, Spanish, French, Italian and Russian ones from the bundled UI fonts. The web app follows the browser's languages (or `?lang=`). The Basic toolbar's Type button holds Vertical Type in its flyout. Vertical Type, Vertical Area Type and Vertical Type on a Path create vertical text (columns right to left, upright CJK glyphs and marks with `vert` alternates, Latin and longer numbers on their side, two- and three-digit numbers set as tate-chu-yoko in one em of the column (kept whole when justified), upright glyphs centred on the column (tracked or justified too), point type's anchor on the first column's centre line); kinsoku (the strict set) applies to horizontal and vertical Japanese, and justified Japanese lines spread their room between characters (not inside Latin words); Paragraph panel › Mojikumi Set (shown with Preferences › Type › Show East Asian Options, `text.setFormat {mojikumi}`): None or Line-end Punctuation Half Width (new type's default, as in Illustrator; older documents and imported text keep None) shares one half-em space between consecutive punctuation, sets a closing mark ending a line half width and an opening bracket starting a wrapped line flush with its start, and puts a quarter em between Japanese and Latin letters or digits; Paragraph panel menu › Top-to-Top / Bottom-to-Bottom Leading measures leading from em box top to top (area type's first line touches the frame) or from baseline to baseline (new type in a Japanese interface starts top to top, with em box centre character alignment, #432); Paragraph panel menu › Burasagari None / Regular / Force (`text.setFormat {burasagari: "none"|"standard"|"forced"}`) hangs an East Asian comma or full stop (、。，．､｡) ending an area type line outside it, Regular (new type's default) when it doesn't fit and Force always (the rest of the line then fills the measure; closing brackets and Latin punctuation don't hang); Character panel menu › Character Alignment (with the East Asian options; `text.setFormat` or `text.setRangeStyle {charAlign}`) lines characters smaller than the largest on their line up on the Roman baseline, the em box top/right, centre or bottom/left, or the ICF (ideographic character face) top/right or bottom/left, from the font's BASE table or, without one, the average ink box of some ideographs and kana; Type ▸ Type Orientation switches existing text; caret, selection, hit testing and arrow keys follow the writing direction. Vertical text exports to PDF as real text and to SVG as outlines.
 - **Transparency:** opacity masks (clip/invert/disable/link), exported as SVG `<mask>` and PDF soft masks.
-- **Advanced art:** live Blends (steps/distance/smooth colour, editable spine, anchor-targeted Blend tool, faithful interpolation, knockout), Envelope Distort (warp/mesh/top object, Reset, full Envelope Options, mesh handles, Edit Contents; type, images, symbols, gradients, patterns and appearance distorted everywhere), Liquify tools with options and pen pressure, Puppet Warp with rotating pins, Perspective Grid with presets, movable planes and projected type (choosing a perspective tool shows the grid; Hide Grid hides it with the tool still chosen), Gradient Mesh, Shape Builder (stroke-only open paths and lines cut the regions they cross and enclose regions of their own; filled open paths count as closed; erase mode while Alt/Option is held: a minus pointer, red highlights of what will go, a click or drag deletes the regions touched, the pieces of open lines and the edges (outline pieces between the points where paths meet, opening their paths there) it passes over, one undo step, `shapeBuilder.merge {erase}` and `shapeBuilder.regions` edges over MCP), Live Paint (every path an edge, open lines included), Image Trace (12 presets, colour layers traced in parallel; a trace past two million anchor points or an image over 64 megapixels is refused with advice rather than running out of memory, and a selection too large to outline shows its bounds (#525); Object › Image Trace › Make and Make and Expand trace at once with the Default preset, #543; with an image selected the Control bar and the Properties panel show Image Trace, whose arrow traces with any preset, Mask (`object.maskImage`: a clipping path on the image's outline, selected so its handles crop), Crop Image and Embed or Unembed in place of Fill and Stroke; with an Image Trace object selected, its Preset (choosing another traces again), the Image Trace panel and Expand, plus Release in Properties; the View modes are not done), pattern swatches with pattern editing mode, live Repeat (radial/grid/mirror).
+- **Advanced art:** live Blends (steps/distance/smooth colour, editable spine, anchor-targeted Blend tool, faithful interpolation, knockout), Envelope Distort (warp/mesh/top object, Reset, full Envelope Options, mesh handles, Edit Contents; type, images, symbols, gradients, patterns and appearance distorted everywhere), Liquify tools with options and pen pressure, Puppet Warp with rotating pins, Perspective Grid with presets, movable planes and projected type (choosing a perspective tool shows the grid; Hide Grid hides it with the tool still chosen), Gradient Mesh, Shape Builder (stroke-only open paths and lines cut the regions they cross and enclose regions of their own; filled open paths count as closed; erase mode while Alt/Option is held: a minus pointer, red highlights of what will go, a click or drag deletes the regions touched, the pieces of open lines and the edges (outline pieces between the points where paths meet, opening their paths there) it passes over, one undo step, `shapeBuilder.merge {erase}` and `shapeBuilder.regions` edges over MCP), Live Paint (every path an edge, open lines included), Image Trace (12 presets, colour layers traced in parallel; a trace past two million anchor points or an image over 64 megapixels is refused with advice rather than running out of memory, and a selection too large to outline shows its bounds (#525); Object › Image Trace › Make and Make and Expand trace at once with the Default preset, #543; with an image selected the Control bar and the Properties panel show Image Trace, whose arrow traces with any preset, Mask (`object.maskImage`: a clipping path on the image's outline, selected so its handles crop), Crop Image (`object.cropImage {trim: true}` cuts an image to its pixels that aren't fully transparent, pixel for pixel) and Embed or Unembed in place of Fill and Stroke; with an Image Trace object selected, its Preset (choosing another traces again), View, the Image Trace panel and Expand, plus Release in Properties; the five View modes (Tracing Result, with Outlines, Outlines, Outlines with Source Image, Source Image) redraw a trace on screen without tracing again, are saved with it and `imageTrace.setView` sets them, while exports and Expand keep the result; the panel's Advanced section is a header that stays open or closed as it was left (part of #641); Color mode's Palette: Limited, Full Tone (as many colours as the tones need, Less … More), Automatic (flat art with its own colours, else Full Tone; a heuristic) and Document Library (the most used colours of the document's swatches or a swatch library, filled with the swatch colours as they are), part of #641; Advanced › Create: Fills and/or Strokes, where lines up to the Stroke width trace as stroked centre lines (distance transform, thinning, a skeleton graph with spurs pruned, curve fitting; one width per line; without Fills, wider areas become stroked outlines), part of #641), pattern swatches with pattern editing mode, live Repeat (radial/grid/mirror).
 - **Paint and appearance (M3):**
   - **Swatches:** names follow the colour model and are unique; Swatch Options (process/spot, Global, Gray/RGB/HSB/CMYK/Web, live preview); editing a global or spot swatch recolours every linked fill, stroke and text run in one undo step; multi-select and delete with confirmation; New Swatch and New Color Group dialogs (a group from the selected artwork's colours); swatches in colour groups convert, separate and count like any other. The Swatches panel selects ranges and whole groups, has a find field, and drags swatches to reorder, regroup or paint art; Add Used Colors, Select All Unused, Merge, Ungroup and Sort by Kind; a CMYK document keeps applied colours in CMYK. Swatch libraries: nine generated colour libraries and five gradient libraries in a library panel, saved as `.vcswatches`, `.gpl` or CSS, and loaded from `.vcswatches`, `.gpl` and swatch exchange (`.ase`) files (RGB, CMYK, Lab and Gray; global, spot and process; groups). Tints of global and spot colours ("Name 40%") stay linked and separate as a percentage of their plate. Spot colours can be defined in Lab (Spot Colors options). A built-in [Registration] swatch prints on every plate.
-  - **Colour:** a Color Picker (colour field, H/S/B/R/G/B channel slider, HSB/RGB/Lab/CMYK fields, hex, web-only snapping, out-of-gamut correction); the Color panel follows each colour's own model and Alt-click paints the other proxy; proxies look through groups and show "?" for mixed paint; Invert, Complement, Apply Last Color (`,`) and Apply Last Gradient (`.`) keep the colour model; every paint command feeds the recent colours. The Color Guide has 21 harmony rules, Steps and Variation options and Limit to Library. Adjust Color Balance (its Global mode shifts tints) and Saturate preview live; Edit Colors and Recolor also reach meshes, images and patterns. Recolor Artwork has colour reduction, five recolour methods, presets, Limit to Library, a colour-wheel Edit tab and Edit Color Group; a local Color Themes panel saves five-colour themes. Fill/Stroke chips open swatch and mixer popovers (the Properties panel has the Control bar's Fill and Stroke chips, Stroke link and weight spinner, with nothing selected too), panels have Illustrator's Window menu keys (Align Shift+F7, Transform Shift+F8, Pathfinder Cmd+Shift+F9, Layers F7, Character Cmd+T…; every panel can be given one in Edit › Keyboard Shortcuts), and Eyedropper Options pick up and apply chosen attributes (Alt and Shift+Alt, image pixels). Fills and strokes can overprint (Attributes panel, Overprint Black options), and CMYK documents blend in inks on screen, in PDF and when flattening. Document Color Mode converts the art, symbols, pattern tiles and swatches through the colour settings: Gray stays Gray, RGB greys separate into four-colour greys and a rich black as Illustrator does, or go on the black plate only with `grays: "black"` (also for `document.open {colorMode}`).
+  - **Colour:** a Color Picker (colour field, H/S/B/R/G/B channel slider, HSB/RGB/Lab/CMYK fields, hex, web-only snapping, out-of-gamut correction); the Color panel follows each colour's own model and Alt-click paints the other proxy; proxies look through groups and show "?" for mixed paint; Invert, Complement, Apply Last Color (`,`) and Apply Last Gradient (`.`) keep the colour model; every paint command feeds the recent colours. The Color Guide has 21 harmony rules, Steps and Variation options and Limit to Library. Adjust Color Balance (its Global mode shifts tints) and Saturate preview live; Edit Colors and Recolor also reach meshes, images and patterns. Recolor Artwork has colour reduction, five recolour methods, presets, Limit to Library, a colour-wheel Edit tab and Edit Color Group; a local Color Themes panel saves five-colour themes. Fill/Stroke chips open swatch and mixer popovers (the Properties panel has the Control bar's Fill and Stroke chips, Stroke link and weight spinner, with nothing selected too), panels have Illustrator's Window menu keys (Align Shift+F7, Transform Shift+F8, Pathfinder Cmd+Shift+F9, Layers F7, Character Cmd+T…; every panel can be given one in Edit › Keyboard Shortcuts), and Eyedropper Options pick up and apply chosen attributes (Alt and Shift+Alt, image pixels). An ICC CMYK profile converts straight into the RGB working space (not through sRGB, so a wider space such as Wide Gamut RGB keeps colours sRGB can't hold) with the colour settings' black-point compensation, on the canvas and in RGB exports alike. Fills and strokes can overprint (Attributes panel, Overprint Black options), and CMYK documents blend in inks on screen, in PDF and when flattening. Document Color Mode converts the art, symbols, pattern tiles and swatches through the colour settings: Gray stays Gray, RGB greys separate into four-colour greys and a rich black as Illustrator does, or go on the black plate only with `grays: "black"` (also for `document.open {colorMode}`).
   - **Gradients:** lossless, validated gradient params; gradients follow rotate, reflect, shear, non-uniform scale and distortions; the Gradient tool edits the fill or stroke of the active proxy, type included; an interactive on-canvas annotator (move, length/angle, rotate, add/move/delete/duplicate stops, midpoints, a stop popover, Delete and arrow keys). The Gradient panel has the Fill/Stroke proxy, a gradient-swatch dropdown with Save to Swatches, midpoint locations, Alt-drag to copy or swap stops, swatch drops on the ramp and a stop eyedropper; copied appearances and graphic styles place gradients on each target's own bounds; gradient handles snap and honour Constrain Angle. Gradient stops stay linked to global and spot swatches. Freeform gradients (points and lines) are edited on the canvas; radial gradients have an extent ellipse, an aspect handle and an off-centre focal point (SVG `fx`/`fy`, PDF two-point radials). A stroke's gradient runs within, along or across it. Object ▸ Expand turns gradients into N objects or a gradient mesh.
   - **Strokes:** one stroke-geometry module shared by the canvas, SVG, PDF and Outline Stroke; dotted lines (zero-length dashes draw dots or squares); arrowheads with hollow outlines, tip-on-end or extend-past-end alignment and one opacity for line and head. SVG and PDF export arrowheads, width profiles, brushes and aligned strokes exactly as the canvas draws them; Outline Stroke and the live Outline Stroke effect outline every stroke item as drawn (dashes, heads, profiles, alignment); dashes can be fitted to corners and path ends; width profiles carry through dashes, and their corners take the join. The Stroke panel edits type's character strokes, follows the stroke units (its weight presets are round values in that unit: `0.25 mm`, `0.0625 in`, `1 px`, #426; fields show four decimals in mm, cm and inches, three in points), shows mixed values blank and opens from the Control bar. A width profile library, thirty more arrowheads, and Width Point Edit with multi-select and discontinuous points. Visual bounds and clicks cover the whole painted stroke. Scale Strokes & Effects, Scale Corners and Use Preview Bounds work everywhere, and new art inherits stroke options, a graphic style or the whole last appearance.
   - **Appearance:** the Appearance panel's selected row drives every paint, stroke, gradient and transparency edit (`item` on the commands); effects apply to one fill or stroke; per-item Opacity popups, whose blend-mode list and opacity slider stay open inside them (#430; the Control bar's Stroke popover too); Mixed Appearances, Layers target dots and basic-appearance rules. Effects can be reordered, moved between items and copied by dragging; Show All Hidden Attributes; clicking an effect edits it in place; the object thumbnail drags onto art; effects render on type, images, symbols, blends, envelopes, meshes and repeats, and per-item raster effects export. Groups, layers and type have their own fills, strokes and effects (Contents and Characters rows); the Layers panel's target circles target layers, groups and objects; Expand Appearance turns fills, strokes, effects and brushes into objects.
@@ -158,7 +158,7 @@ grade by behaviour against `plan/illustrator/`, not by whether a menu item exist
 - **Fonts:** a font is found by any of its names (family and style in every language of its name table, legacy family/style pairs, PostScript name), so documents from other apps open with the font they name; Find Font and `text.fonts` say for each font whether it was found exactly, by another name, substituted or missing, and how many glyphs are missing. PDF and `.ai` import brings Japanese text back as live type: CID fonts without a ToUnicode map read through the standard CMaps, vertical columns (WMode 1) as vertical type, letter spacing as tracking; a glyph is live type only when the installed font (in the closest style of its family) draws the same glyph, and text in a font that isn't installed comes in as live type shown in the fallback font until the font is installed (exports that draw it — PDF, EPS, EMF/WMF, raster, SVG outlines or embedded fonts — warn that they wrote the fallback font; `textAs: outlines` keeps the PDF's embedded glyphs).
 - **Files (M4):**
   - `.vectorcraft` (lossless JSON, compressed, atomic saves, save down to v1), Save As with a format chooser, Save a Copy, Revert, templates, Data Recovery after a crash (browser tabs hold their copies with Web Locks too, so a background tab's copies are never taken for a crash's, and a tab repairs copies another removed when it resumes: #367), background save and export. The desktop app writes its warnings and errors (graphics adapter, a lost graphics device, panics the guard recovered from) to standard error and to `logs/vectorcraft.log` next to the preferences, the two previous runs kept and each file capped at 16 MiB, so a launch without a terminal still leaves something to attach to a bug report (#465).
-  - SVG/SVGZ in and out with SVG Options, Preserve Editing, symbols, filters, rich text and physical units (SVG type under a transform or `viewBox` scale opens at the size it draws at, the scale moved into its size, leading, baseline shift and strokes, a stretch, skew or rotation kept as its transform: #396; a top-level group with a clip path, such as a clipped Inkscape layer, opens as a layer with a clipping mask, its name kept: #420; hidden objects written hidden on Save and `convert`, and `data-*` attributes kept as the objects' own data: #522; top-level groups open as layers named from `data-name`, else the id, also when one more group (a transform on all the art, a `<switch>`) wraps them, hidden ones hidden, and a file whose art sits loose under a root `<svg>` with an id (or `data-name`), as one-layer exports write it, opens with its one layer named from it; nested groups stay groups, except the sublayers VectorCraft writes, marked `data-vc-layer`, and Inkscape sublayers, which open as sublayers in their layer's colour: #372); PDF and PDF-compatible `.ai` in and out (layers, with hidden ones kept hidden with their art and nested ones as sublayers, on pages of up to 64 million operators, art whose layer can't be told going to a hidden, non-printing layer rather than showing or printing: #419; strokes kept live, a fill and a stroke of one outline as one object; a type object's stroke written as each glyph's outline stroked back on the type, so it stays one editable object; lines wrapped in a frame (each wrapped line ending in a space, one left edge, leading and font) back as one area type object, left aligned or justified with its paragraph spacing, where laying it out breaks the lines where the file does; glyphs set apart by gaps wider than a space (a barcode's digit groups) keeping their places; layers stacked as the pages mark them even when one first paints on a later page, art ending a layer's marked content or a clip closing in a later layer kept in its own layer, and layers with no art kept empty: #508; masks, editable text with type set along a curve coming back as type on a path, each artboard's art on its own page only, an `.ai`'s white page under its layers left out rather than coming in as art, spot colours, presets, security, marks and bleed, ICC output intents, raster effects, subset fonts, PDF/X, PDF layers, overprint, page thumbnails, fast web view, PDF 1.3). CMYK images keep their ink amounts from PDF import (and from placed CMYK TIFFs) to PDF export: a CMYK JPEG passes through unchanged, others stay CMYK (DeviceCMYK, or ICC-based CMYK in PDF/X-3/X-4) unless the Output settings convert them; the canvas shows them through the working CMYK profile (#320).
+  - SVG/SVGZ in and out with SVG Options, Preserve Editing, symbols, filters, rich text and physical units (SVG type under a transform or `viewBox` scale opens at the size it draws at, the scale moved into its size, leading, baseline shift and strokes, a stretch, skew or rotation kept as its transform: #396; a top-level group with a clip path, such as a clipped Inkscape layer, opens as a layer with a clipping mask, its name kept: #420; hidden objects written hidden on Save and `convert`, and `data-*` attributes kept as the objects' own data: #522; top-level groups open as layers named from `data-name`, else the id, also when one more group (a transform on all the art, a `<switch>`) wraps them, hidden ones hidden, and a file whose art sits loose under a root `<svg>` with an id (or `data-name`), as one-layer exports write it, opens with its one layer named from it; nested groups stay groups, except the sublayers VectorCraft writes, marked `data-vc-layer`, and Inkscape sublayers, which open as sublayers in their layer's colour: #372); PDF and PDF-compatible `.ai` in and out (layers, with hidden ones kept hidden with their art and nested ones as sublayers, on pages of up to 64 million operators, art whose layer can't be told going to a hidden, non-printing layer rather than showing or printing: #419; strokes kept live, a fill and a stroke of one outline as one object; a type object's stroke written as each glyph's outline stroked back on the type, so it stays one editable object; lines wrapped in a frame (each wrapped line ending in a space, one left edge, leading and font) back as one area type object, left aligned or justified with its paragraph spacing, where laying it out breaks the lines where the file does; glyphs set apart by gaps wider than a space (a barcode's digit groups) keeping their places; layers stacked as the pages mark them even when one first paints on a later page, art ending a layer's marked content or a clip closing in a later layer kept in its own layer, and layers with no art kept empty: #508; masks, editable text with type set along a curve coming back as type on a path, each artboard's art on its own page only, an `.ai`'s white page under its layers left out rather than coming in as art, spot colours, presets, security, marks and bleed, ICC output intents, raster effects, subset fonts, PDF/X, PDF layers, overprint, page thumbnails, fast web view, PDF 1.3). CMYK images keep their ink amounts from PDF import (and from placed CMYK TIFFs) to PDF export: a CMYK JPEG passes through unchanged, others stay CMYK (DeviceCMYK, or ICC-based CMYK in PDF/X-3/X-4) unless the Output settings convert them; the canvas shows them through the working CMYK profile (#320). A masked CMYK image (`/SMask`, `/Mask` or a colour key) keeps its inks too, its alpha coming in as a greyscale opacity mask.
   - EPS and DXF in and out, EMF/WMF in and out; PNG (with PNG-8), JPEG, WebP, GIF, TIFF, BMP, Targa and layered PSD export. EPS import runs a PostScript Level 3 interpreter written from the PostScript Language Reference: resource categories and `resourceforall`, local and global VM (`currentglobal`/`setglobal`/`gcheck`), `clipsave`/`cliprestore`, subarrays and substrings that share storage, the standard dictionaries in `systemdict`, `dictstack`, `internaldict`, executable filters and strings, `load` by any key, `//name` immediate names, `token`, `execform`, user paths, `cshow`, `rootfont`, `cachestatus`, colour rendering and halftone queries, file `status` and data read with `flushfile`, and `pdfmark` marks dropped (Discord feedback, #466, #469, #474). Masked images (`ImageType 3` in its three interleavings) and reusable streams are read, and an image's several data sources are read in turn, as the reference defines (procedures that read one file get their own rows: such images came in banded, #498). `restore` puts dictionaries back as they were at the `save`, so programs that count their saves in a dictionary read to their end (part of #505). Tiling patterns come in as pattern swatches, uncoloured ones too; Type 3 fonts' glyphs as their outlines, spaced by `ashow`/`widthshow`/`xshow`/`kshow`; mesh and function-based shadings (types 1, 4–7) as gradient meshes; sampled functions (type 0) and Flate/LZW predictors are read. It is tested with programs written from the specification in the ways common generators use these features; Inkscape/cairo EPS files open as vectors. When a file's PostScript still can't be read, it opens as its TIFF preview, its Windows metafile preview (as vectors) or its EPSI preview, and the warning (in the status bar, `document.open`/`app.open`/MCP `open_file` replies and `vectorcraft-cli info`) names the error, the operator that raised it and the procedures it ran in. Legacy PostScript `.ai` files (Illustrator 3–8, written with the prolog that defines their operators) keep their groups and nested groups (`u` … `U`), between and inside clipping groups; EPS and EMF/WMF import nest clips (and groups) at most 128 deep, so a hostile file can't exhaust the stack. DXF TEXT justified Fit or Aligned spans its two points (stretched, or scaled as a whole).
   - Placed documents: File › Place of a `.vectorcraft` file links to it by default (`file.place`'s `link`): one locked object showing an artboard of the document (or its art's bounds), read the way placing it without Link reads it, its symbols, patterns and images kept apart from the document's; without Link (or from bytes, not a file) it is an editable copy as before. It stays vectors in every output (SVG, PDF, EPS, EMF, DXF), and so do placed documents inside it, read from their own files up to 8 levels deep (documents that place each other stop there). On screen they draw from bitmaps cached per file and zoom step, shared by every copy and made in the background (a placeholder until ready), so a sheet of them redraws in about a millisecond; exports and prints draw them exactly. Like linked images, a save keeps only a preview of each (JPEG when opaque) unless Include Linked Files; output, and zooming past the preview, read the file again, falling back to the preview with a warning when it is gone or changed. Saves for older versions write them as plain art. Links check, update, relink, Update Links on open, Link Info (the artboard's size), Placement Options, Break Link (also Embed, Object › Expand: the editable copy placing without Link gives, its resources joining the document), Edit Original (the document in a new tab) and the Links panel cover them; saving a document updates the open documents that place it. The native format (v4) keeps data of 8 KB or more after the JSON instead of base64 in it.
   - Place and the Links panel, Package, File Info, Print with print presets, PostScript output and print tiling, slices and Save for Web, Export for Screens and Asset Export, CSS Properties, PNG/PDF/SVG/text clipboard flavours; files copied in a file manager paste as art (SVG, PDF, EMF/WMF, bitmaps) on every desktop platform, and Linux/Wayland reads the compositor's clipboard (#398); on Linux the Paste menu checks the clipboard off the UI thread, so an X11 owner that never answers can't freeze the window (#510); screenshots and other copied pictures paste as embedded images at the view centre everywhere, the web included (#457).
@@ -215,15 +215,15 @@ about 1–1.5 agent-hours each, so the other rows (estimated on the older scale)
 | Type core | 9 | 80% | Middle Eastern features beyond bidi layout and Paragraph Direction (Character Direction, digit types, kashidas, the Middle Eastern composers, editable bidirectional SVG text, a split caret where directions meet); Hyphenation… and Justification… options (Every-line Composer for justified and ragged text, per object, is done; it is tuned by eye, not yet compared side by side with Illustrator; mixed type sizes in a paragraph still break single-line), Optical Margin Alignment, paragraph spacing limit for vertically justified area type, hidden characters, paragraph attributes in the Type tool's copy and paste (the characters keep their styles, the paragraphs take the destination's), mixed-value display in the Paragraph panel for a selection across differing paragraphs, Transform Again after a type-area resize (it scales the type), partial selection of type-area anchors by marquee | 14–19 |
 | Type advanced | 4 | 50% | CJK composition for vertical type (ruby, mojikumi beyond Line-end Punctuation Half Width — the other sets (and their paragraph-start bracket and indent rules), kinsoku sets and the Mojikumi Settings dialog —, proportional vertical metrics, manual tate-chu-yoko), variable font axis sliders (named instances are styles), tab leaders, spell check (open dictionary), Touch Type, Retype; vertical point/area/path type and Type Orientation have initial support (beyond parity, not scored: inline symbols in text) | 20–28 |
 | Symbols, blends, envelopes, Repeat, perspective | 5 | 88% | symbol libraries (original), dynamic symbols, envelope Anti-Alias/Preserve Shape output and warp point editing, brush interpolation in blends (M8 fidelity pass done) | 5–8 |
-| Image Trace, graphs, image tools | 3 | 70% | graph Design/Column/Marker, Create Object Mosaic, Crop Image polish (an on-canvas crop box), Image Trace View modes (Outlines, Source Image) (Vector Halftone is done) | 6–10 |
-| Layers, artboards, document setup | 5 | 82% | Layers panel: a confirmation before deleting layers that hold art, Collect for Export, row context menus, the Layer Options dialog for several rows with mixed values, Paste Remembers Layers for sublayers, drag-scrolling a long panel while dragging rows; artboard presets/rearrange polish (Document Setup, New Document and the rest of the Layers panel are done) | 4–7 |
+| Image Trace, graphs, image tools | 3 | 70% | graph Design/Column/Marker, Create Object Mosaic, Crop Image polish (an on-canvas crop box), per-feature stroke/fill choice and varying widths in Image Trace's Create Strokes (Vector Halftone and the Image Trace View modes, Palette and Create Strokes are done) | 6–10 |
+| Layers, artboards, document setup | 5 | 82% | Layers panel: a confirmation before deleting layers that hold art, Collect for Export, row context menus, the Layer Options dialog for several rows with mixed values, Paste Remembers Layers for sublayers, drag-scrolling a long panel while dragging rows; artboard preset polish (Rearrange All Artboards, Document Setup, New Document and the rest of the Layers panel are done) | 4–7 |
 | View & navigation | 3 | 70% | New View/Edit Views, multiple windows/arrange, Snap to Pixel/Glyph (print tiling is done) | 9–14 |
-| Guides, grids, smart guides, snapping, rulers | 3 | 84% | global/video rulers, Spacing Guides, Smart Guides' angle and distance readouts while drawing, Alt swapping a ruler guide's orientation, ruler guides selected together with art (marquee, Shift-click), ruler guides as Layers rows with their own lock and hide (#451: Lock Guides locks them all; Make Guides paths are Layers rows already) (dragging existing guides is done, #414; new guides snapping to side midpoints and artboards, and artboard guides, #451; the drawing tools snapping, with Construction Guides, #506) | 2–4 |
+| Guides, grids, smart guides, snapping, rulers | 3 | 85% | global/video rulers, Spacing Guides' distance readouts and spacing for resized or drawn art, Smart Guides' angle and distance readouts while drawing, Alt swapping a ruler guide's orientation, ruler guides selected together with art (marquee, Shift-click), ruler guides as Layers rows with their own lock and hide (#451: Lock Guides locks them all; Make Guides paths are Layers rows already) (dragging existing guides is done, #414; new guides snapping to side midpoints and artboards, and artboard guides, #451; the drawing tools snapping, with Construction Guides, #506; Spacing Guides for moves, #394) | 2–4 |
 | File formats | 6 | 85% | DWG (no open spec: DXF instead), PSD placement as layers, EPS checked against more real files users send (Inkscape files open as vectors; other generators' constructs are tested with programs written from the PostScript Language Reference only; CID-keyed CJK type and `CCITTFaxDecode` images not read), legacy `.ai` files saved without the prolog that defines their operators (their own operator set isn't read yet), the remaining fidelity polish; EPS, DXF, EMF/WMF, TIFF, BMP, Targa, PSD export, SVGZ, PDF security, PDF/X, PDF layers and presets are done | 6–10 |
 | Export for Screens, Asset Export, slices, Save for Web | 3 | 85% | polish only (all four are done) | 2–4 |
 | Print, colour management, separations, flattener | 3 | 80% | print preview fidelity (flattener presets in PDF and print, overprint in PDF and composite print, Print dialog, presets, PostScript, marks, separations, Print Tiling, print overprint/flattener/bitmap options and printer profile are done) | 1–2 |
 | Automation | 3 | 60% | Variables (data merge), scripting surface, batch | 8–12 |
-| UI chrome (panels, contextual Properties, workspaces, prefs) | 6 | 78% | macOS native menu dismissal fixed (M14.8); remaining: Variables, SVG Interactivity, Properties per context, Consolidate All Windows, floating panels outside the app window and docked into any group, context menus beyond the canvas (Links, Asset Export, CSS Properties, Attributes and the canvas context menu are done), about 30 Preferences options stored but not yet acted on (#394: Spacing Guides, Auto Size New Area Type, Show Font Names in English, Highlight Alternate Glyphs, performance, devices…) | 14–22 |
+| UI chrome (panels, contextual Properties, workspaces, prefs) | 6 | 78% | macOS native menu dismissal fixed (M14.8); remaining: Variables, SVG Interactivity, Properties per context, Consolidate All Windows, floating panels outside the app window and docked into any group, context menus beyond the canvas (Links, Asset Export, CSS Properties, Attributes and the canvas context menu are done), about 20 Preferences options stored but not yet acted on (#394: Spacing Guides, Show Font Names in English, Highlight Alternate Glyphs, Display Print Size, Open Documents As Tabs, Real-time Drawing, hyphenation, Appearance of Black, devices…) | 14–22 |
 | Libraries, Links, Package | 2 | 50% | a local Libraries panel (no cloud by design); Links and Package are done; placed VectorCraft documents are done (linked by default, vectors in every output, previews, Break Link, Expand, Edit Original, refresh on save) | 5–8 |
 | **Feature parity** | **103** | **~75%** | | **~210–330** |
 | Interaction-fidelity pass (side by side with Illustrator: every tool modifier, cursor, dialog, Properties context) | | | | 60–90 |

apps/vectorcraft/src/gpu.rs

@@ -22,8 +22,9 @@ use std::sync::{Arc, OnceLock};
 use eframe::egui_wgpu::NativeAdapterSelectorMethod;
 use eframe::wgpu::{self, Backend, DeviceType, PowerPreference};
 
-/// The adapters a restart leaves out, those the window failed on, as comma-separated
-/// `backend:vendor:device` keys (`Vulkan:1002:164e`). Set by the app itself when it starts again.
+/// The adapters a restart leaves out, those the window failed on, as comma-separated [`key`]s
+/// (`Vulkan:1002:164e`, `Metal:Intel Iris Pro Graphics`). Set by the app itself when it starts
+/// again.
 pub const SKIP_ENV: &str = "VECTORCRAFT_GPU_SKIP";
 
 /// wgpu's variable for choosing an adapter by (part of) its name, any case.
@@ -36,7 +37,7 @@ const HELP: &str =
 /// Frames the UI ran before the failure, below which it was still starting up. The failure in
 /// #502 came on the first or second frame; later, the adapter has proved itself, and a lost
 /// window is something else (such as the compositor restarting).
-const STARTUP_FRAMES: u64 = 10;
+pub const STARTUP_FRAMES: u64 = 10;
 
 /// The preference used when Preferences say Automatic. Windows and macOS show frames from any GPU
 /// (the integrated one avoids the flicker of #306). Elsewhere, the system's own order: Mesa's
@@ -60,7 +61,7 @@ pub fn power_preference(pref: Option<&str>, env: Option<PowerPreference>) -> Pow
 /// One adapter, as [`adapter_order`] sees it.
 #[derive(Clone, Debug)]
 pub struct Candidate {
-    /// Identifies the adapter across a restart: `backend:vendor:device` ([`key`]).
+    /// Identifies the adapter across a restart ([`key`]).
     pub key: String,
     pub name: String,
     pub backend: Backend,
@@ -73,7 +74,7 @@ impl Candidate {
     fn new(adapter: &wgpu::Adapter, surface: Option<&wgpu::Surface<'_>>) -> Self {
         let info = adapter.get_info();
         Self {
-            key: key(info.backend, info.vendor, info.device),
+            key: key(info.backend, info.vendor, info.device, &info.name),
             presents: surface.is_none_or(|s| adapter.is_surface_supported(s)),
             name: info.name,
             backend: info.backend,
@@ -83,8 +84,15 @@ impl Candidate {
 }
 
 /// `backend:vendor:device`, e.g. `Vulkan:1002:164e` (PCI ids, as `MESA_VK_DEVICE_SELECT` takes them).
-fn key(backend: Backend, vendor: u32, device: u32) -> String {
-    format!("{backend:?}:{vendor:04x}:{device:04x}")
+/// Metal reports no ids (`0000:0000` for every GPU), so an adapter without them is `backend:name`
+/// (`Metal:Intel Iris Pro Graphics`): otherwise leaving out the one that failed would leave out
+/// every GPU of a dual-GPU Mac (#651). Commas, which separate [`SKIP_ENV`]'s keys, become spaces.
+fn key(backend: Backend, vendor: u32, device: u32, name: &str) -> String {
+    if vendor == 0 && device == 0 {
+        format!("{backend:?}:{}", name.replace(',', " ").trim())
+    } else {
+        format!("{backend:?}:{vendor:04x}:{device:04x}")
+    }
 }
 
 /// The order to try `candidates` in (their indices): only those that present to the window and
@@ -307,6 +315,27 @@ mod tests {
 
     /// A restart leaves out the adapter the window failed on, so Power Saving on the machine of
     /// #502 ends up on the NVIDIA GPU, and once every adapter failed there is nothing to try.
+    /// A dual-GPU Mac reports both GPUs under Metal with no PCI ids (#651): their keys still
+    /// differ, so when the integrated GPU fails, the restart renders on the discrete one.
+    #[test]
+    fn gpus_without_pci_ids_are_told_apart_by_name() {
+        let mac = |name: &str, device_type| Candidate {
+            key: key(Backend::Metal, 0, 0, name),
+            name: name.into(),
+            backend: Backend::Metal,
+            device_type,
+            presents: true,
+        };
+        let c = vec![mac("NVIDIA GeForce GT 750M", DeviceType::DiscreteGpu), mac("Intel Iris Pro Graphics", DeviceType::IntegratedGpu)];
+        assert_eq!((c[0].key.as_str(), c[1].key.as_str()), ("Metal:NVIDIA GeForce GT 750M", "Metal:Intel Iris Pro Graphics"));
+        let first = adapter_order(&c, PowerPreference::LowPower, None, &[]);
+        assert_eq!(names(&c, &first)[0], "Intel Iris Pro Graphics");
+        let skip = parse_skip(&c[first[0]].key);
+        assert_eq!(names(&c, &adapter_order(&c, PowerPreference::LowPower, None, &skip)), ["NVIDIA GeForce GT 750M"]);
+        // A comma in a name can't split the list.
+        assert_eq!(parse_skip(&key(Backend::Gl, 0, 0, "Mesa, llvmpipe")), ["Gl:Mesa  llvmpipe"]);
+    }
+
     #[test]
     fn a_restart_tries_the_next_adapter() {
         let c = issue_502();
@@ -433,8 +462,8 @@ mod tests {
     fn skipped_adapters_parse_from_a_comma_separated_list() {
         assert_eq!(parse_skip("Vulkan:1002:164e, Gl:10de:2f04,,"), ["Vulkan:1002:164e", "Gl:10de:2f04"]);
         assert!(parse_skip("").is_empty());
-        assert_eq!(key(Backend::Vulkan, 0x1002, 0x164e), "Vulkan:1002:164e");
-        assert_eq!(key(Backend::Gl, 0x10de, 0x2f04), "Gl:10de:2f04");
+        assert_eq!(key(Backend::Vulkan, 0x1002, 0x164e, "AMD Radeon"), "Vulkan:1002:164e");
+        assert_eq!(key(Backend::Gl, 0x10de, 0x2f04, "NVIDIA"), "Gl:10de:2f04");
     }
 
     #[test]

apps/vectorcraft/src/main.rs

@@ -43,10 +43,13 @@ struct App {
     graphics_loss: GraphicsLoss,
     /// The graphics device was lost and the unsaved changes are kept for Data Recovery.
     graphics_lost: bool,
+    /// Frames the UI has run (see [`end_before_teardown`]).
+    frames: u64,
 }
 
 impl eframe::App for App {
     fn logic(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
+        self.frames = ctx.cumulative_frame_nr();
         if let Some(why) = self.graphics_loss.take() {
             // eframe can't give a window a new device: the user saves and starts again.
             self.graphics_lost = self.app.graphics_lost(&why);
@@ -87,6 +90,7 @@ impl eframe::App for App {
     #[cfg(not(feature = "windows7"))]
     fn on_exit(&mut self) {
         save_prefs(&self.app);
+        end_before_teardown(self.frames);
     }
     #[cfg(feature = "windows7")]
     fn on_exit(&mut self, _gl: Option<&eframe::glow::Context>) {
@@ -94,6 +98,22 @@ impl eframe::App for App {
     }
 }
 
+/// On macOS with accessibility, end the process once the app has saved what it keeps on quitting,
+/// before eframe tears the window down (#661). AccessKit then gives the window's content view back
+/// its own class, which AppKit's Touch Bar support was observing it under, and AppKit aborts the
+/// app as it quits on Macs with a Touch Bar. Nothing after the window is needed on a normal quit.
+/// Not while the window is still starting up (`frames` below [`gpu::STARTUP_FRAMES`]): a graphics
+/// failure then starts the app again on another adapter (#651).
+#[allow(unused_variables)]
+fn end_before_teardown(frames: u64) {
+    #[cfg(all(target_os = "macos", feature = "accessibility", feature = "wgpu"))]
+    if frames >= gpu::STARTUP_FRAMES {
+        log::info!("quitting");
+        log::logger().flush();
+        std::process::exit(0);
+    }
+}
+
 /// Open files handed to the app (command line, macOS Finder and Dock) as documents. A file that
 /// can't be opened is reported in the status bar and on stderr; the others still open.
 fn open_files(app: &mut VectorcraftApp, files: Vec<String>) {
@@ -423,6 +443,11 @@ fn main() -> std::process::ExitCode {
         // Only adapters that can show the window, in the order `gpu` gives (#306, #502).
         if let eframe::egui_wgpu::WgpuSetup::CreateNew(create) = &mut options.wgpu_options.wgpu_setup {
             create.native_adapter_selector = Some(gpu::selector(power, startup.clone()));
+            // Nothing draws or dispatches indirectly, so wgpu's check of indirect arguments only
+            // costs a compute shader at start-up, one some drivers can't compile (OCLP-patched
+            // Metal on an Iris Pro, #651). `WGPU_VALIDATION_INDIRECT_CALL=1` turns it back on.
+            create.instance_descriptor.flags =
+                (eframe::wgpu::InstanceFlags::from_build_config() - eframe::wgpu::InstanceFlags::VALIDATION_INDIRECT_CALL).with_env();
         }
         options
     };
@@ -490,7 +515,7 @@ fn main() -> std::process::ExitCode {
                 #[cfg(not(target_os = "macos"))]
                 let _ = in_window_menus;
                 open_files(&mut app, files);
-                Ok(Box::new(App { app, graphics_loss, graphics_lost: false }))
+                Ok(Box::new(App { app, graphics_loss, graphics_lost: false, frames: 0 }))
             }),
         )
     });

crates/color/src/cms/icc.rs

@@ -1,7 +1,7 @@
 //! ICC profiles through `moxcms` (pure Rust): built-in RGB spaces and user-supplied `.icc` files,
 //! and the profiles exports embed ([`encode_builtin`]), written in code from the CMS.
 
-use std::sync::{Arc, OnceLock};
+use std::sync::{Arc, Mutex, OnceLock};
 
 use moxcms::{
     ColorProfile, DataColorSpace, Layout, LocalizableString, LutMultidimensionalType, LutStore, LutWarehouse, Matrix3d, ProfileClass, ProfileText,
@@ -27,6 +27,9 @@ fn intent_index(i: Intent) -> usize {
 
 type Xf = Option<Arc<TransformF32Executor>>;
 
+/// A direct transform's cache key: destination name, intent index, black-point compensation.
+type DirectKey = (String, usize, bool);
+
 /// A parsed ICC profile plus lazily-built transforms to/from sRGB.
 pub struct IccProfile {
     pub name: String,
@@ -37,6 +40,21 @@ pub struct IccProfile {
     srgb: ColorProfile,
     to_srgb: [OnceLock<Xf>; 4],
     from_srgb: [OnceLock<Xf>; 4],
+    /// Direct transforms into other RGB profiles ([`Self::to_rgb_of`]), by destination, intent
+    /// and black-point compensation.
+    direct: Mutex<Vec<(DirectKey, Option<Arc<Direct>>)>>,
+}
+
+/// A transform from one profile into an RGB profile without passing through sRGB: into the
+/// destination's primaries with linear tone curves, where black-point compensation is a linear
+/// remap, then onto its own curves.
+struct Direct {
+    to_linear: Arc<TransformF32Executor>,
+    /// Linear → the destination's curves; `None` when the destination isn't a matrix profile
+    /// (the first transform goes straight into it, without compensation).
+    to_dest: Option<Arc<TransformF32Executor>>,
+    /// The source black's luminance in the linear destination (0: no compensation).
+    black: f32,
 }
 
 impl std::fmt::Debug for IccProfile {
@@ -72,6 +90,7 @@ impl IccProfile {
             srgb: ColorProfile::new_srgb(),
             to_srgb: Default::default(),
             from_srgb: Default::default(),
+            direct: Mutex::new(Vec::new()),
         })
     }
 
@@ -135,6 +154,72 @@ impl IccProfile {
         Some(dst.into_iter().map(|x| x.clamp(0.0, 1.0)).collect())
     }
 
+    /// Device values (RGB / CMYK / Gray, 0..1) → `dest`'s RGB, converted directly with `intent`:
+    /// not through sRGB, so colours outside sRGB keep their place in a wider space. With `bpc`
+    /// (and an intent other than absolute), this profile's black maps onto the destination's
+    /// black (black-point compensation, the darkest ink the profile prints becoming RGB 0 rather
+    /// than a dark grey). `None` when `dest` isn't RGB or no transform can be built.
+    pub fn to_rgb_of(&self, dest: &IccProfile, v: &[f32], intent: Intent, bpc: bool) -> Option<[f32; 3]> {
+        let t = self.direct_xf(dest, intent, bpc && intent != Intent::AbsoluteColorimetric)?;
+        let mut src = v.to_vec();
+        src.resize(self.channels(), 0.0);
+        let mut lin = [0.0f32; 3];
+        t.to_linear.transform(&src, &mut lin).ok()?;
+        let Some(to_dest) = &t.to_dest else { return Some(lin.map(|x| x.clamp(0.0, 1.0))) };
+        if t.black > 0.0 {
+            lin = lin.map(|x| (x - t.black) / (1.0 - t.black));
+        }
+        let lin = lin.map(|x| x.clamp(0.0, 1.0));
+        let mut out = [0.0f32; 3];
+        to_dest.transform(&lin, &mut out).ok()?;
+        Some(out.map(|x| x.clamp(0.0, 1.0)))
+    }
+
+    fn direct_xf(&self, dest: &IccProfile, intent: Intent, bpc: bool) -> Option<Arc<Direct>> {
+        if dest.kind != ProfileKind::Rgb {
+            return None;
+        }
+        let key = (dest.name.clone(), intent_index(intent), bpc);
+        let mut cache = self.direct.lock().unwrap_or_else(|e| e.into_inner());
+        if let Some((_, t)) = cache.iter().find(|(k, _)| *k == key) {
+            return t.clone();
+        }
+        let t = self.build_direct(dest, intent, bpc).map(Arc::new);
+        cache.push((key, t.clone()));
+        t
+    }
+
+    fn build_direct(&self, dest: &IccProfile, intent: Intent, bpc: bool) -> Option<Direct> {
+        let d = &dest.profile;
+        let matrix = d.red_trc.is_some() && d.green_trc.is_some() && d.blue_trc.is_some();
+        if !matrix {
+            let xf = self.profile.create_transform_f32(self.layout(), d, Layout::Rgb, Self::opts(intent)).ok()?;
+            return Some(Direct { to_linear: xf, to_dest: None, black: 0.0 });
+        }
+        let mut linear = d.clone();
+        for trc in [&mut linear.red_trc, &mut linear.green_trc, &mut linear.blue_trc] {
+            *trc = Some(ToneReprCurve::Parametric(vec![1.0]));
+        }
+        // A coding-independent code point names the transfer curve outright (moxcms's sRGB has
+        // one) and would override the linear curves.
+        linear.cicp = None;
+        let to_linear = self.profile.create_transform_f32(self.layout(), &linear, Layout::Rgb, Self::opts(intent)).ok()?;
+        let to_dest = linear.create_transform_f32(Layout::Rgb, d, Layout::Rgb, Self::opts(Intent::RelativeColorimetric)).ok()?;
+        // The source black: the darkest colour the profile reproduces, found as lcms does for an
+        // output profile (black sent into the profile and read back), made neutral.
+        let black = if bpc && self.kind == ProfileKind::Cmyk {
+            let inks = self.from_srgb([0.0; 3], Intent::RelativeColorimetric)?;
+            let mut lin = [0.0f32; 3];
+            to_linear.transform(&inks, &mut lin).ok()?;
+            let y = |c: &moxcms::Xyzd| c.y as f32;
+            let lum = lin[0] * y(&d.red_colorant) + lin[1] * y(&d.green_colorant) + lin[2] * y(&d.blue_colorant);
+            lum.clamp(0.0, 0.5)
+        } else {
+            0.0
+        };
+        Some(Direct { to_linear, to_dest: Some(to_dest), black })
+    }
+
     /// Whether transforms can be built for this profile (checked at registration).
     pub fn usable(&self) -> bool {
         self.to_xf(Intent::RelativeColorimetric).is_some() && self.inverse_xf(Intent::RelativeColorimetric).is_some()

crates/color/src/cms/mod.rs

@@ -356,10 +356,37 @@ impl Cms {
         }
     }
 
-    /// CMYK in the working space → display sRGB (`absolute` simulates the paper colour).
+    /// CMYK in the working space → display sRGB (`absolute` simulates the paper colour). An ICC
+    /// CMYK profile converts as [`Self::cmyk_to_rgb`] does into sRGB (with the settings'
+    /// black-point compensation), so what shows is what an RGB export writes.
     pub fn cmyk_to_srgb(&self, cmyk: [f32; 4], absolute: bool) -> [f32; 3] {
+        if let (false, CmykSpace::Icc(p)) = (absolute, &self.cmyk)
+            && let Some(srgb) = builtin_rgb_cache(SRGB)
+            && let Some(v) = p.to_rgb_of(&srgb, &cmyk.map(|v| v.clamp(0.0, 1.0)), Intent::RelativeColorimetric, self.settings.bpc)
+        {
+            return v;
+        }
         Self::cmyk_to_srgb_in(&self.cmyk, cmyk, absolute)
     }
+    /// CMYK in the working space → working RGB with `intent`. An ICC CMYK profile converts
+    /// directly into the RGB profile: not through display sRGB, which would clip colours a wider
+    /// RGB space holds (Wide Gamut RGB keeps CMYK cyan that sRGB can't show), and with the
+    /// settings' black-point compensation. The built-in CMYK spaces go through sRGB as before
+    /// (Generic CMYK compensates in its own model).
+    pub fn cmyk_to_rgb(&self, cmyk: [f32; 4], intent: Intent) -> [f32; 3] {
+        let cmyk = cmyk.map(|v| v.clamp(0.0, 1.0));
+        let src = match &self.cmyk {
+            CmykSpace::Icc(p) => Some(p.clone()),
+            CmykSpace::Generic(_) | CmykSpace::Device => None,
+        };
+        let dest = match &self.rgb {
+            RgbSpace::Icc(p) => Some(p.clone()),
+            RgbSpace::Srgb => builtin_rgb_cache(SRGB),
+        };
+        src.zip(dest)
+            .and_then(|(s, d)| s.to_rgb_of(&d, &cmyk, intent, self.settings.bpc))
+            .unwrap_or_else(|| self.srgb_to_rgb(self.cmyk_to_srgb(cmyk, false)))
+    }
     /// Display sRGB → working CMYK with `intent`.
     pub fn srgb_to_cmyk(&self, srgb: [f32; 3], intent: Intent) -> [f32; 4] {
         Self::srgb_to_cmyk_in(&self.cmyk, srgb, intent, self.settings.bpc)
@@ -424,6 +451,10 @@ impl Cms {
                 let [c, m, y, k] = self.to_cmyk(c, intent);
                 Color::Cmyk { c, m, y, k }
             }
+            (Color::Cmyk { c, m, y, k }, Model::Rgb) => {
+                let [r, g, b] = self.cmyk_to_rgb([*c, *m, *y, *k], intent);
+                Color::Rgb { r, g, b }
+            }
             (_, Model::Rgb) => {
                 let [r, g, b] = self.srgb_to_rgb(self.display_rgb(c));
                 Color::Rgb { r, g, b }

crates/color/src/cms/tests_icc.rs

@@ -60,3 +60,54 @@ fn a_loaded_profile_is_embedded_as_loaded() {
     register_icc(&bytes, Some("Embedded As Loaded RGB".into())).unwrap();
     assert_eq!(&*icc_bytes("Embedded As Loaded RGB").unwrap(), &bytes[..]);
 }
+
+/// Settings with an ICC CMYK profile (Generic CMYK's, loaded as a file is) and Wide Gamut RGB.
+fn icc_cmyk(bpc: bool) -> Cms {
+    let name = register_icc(&icc_bytes(GENERIC_CMYK).unwrap(), Some("Test ICC CMYK".into())).unwrap().name;
+    Cms::new(&ColorSettings { rgb: WIDE_GAMUT_RGB.into(), cmyk: name, bpc, ..ColorSettings::default() }).unwrap()
+}
+
+#[test]
+fn icc_cmyk_converts_into_a_wide_rgb_space_directly_without_clipping_to_srgb() {
+    let wide = icc_cmyk(true);
+    let cyan = [1.0, 0.0, 0.0, 0.0];
+    let direct = wide.cmyk_to_rgb(cyan, Intent::RelativeColorimetric);
+    // Through sRGB, cyan clips to sRGB's gamut first: in the wider space that reads as a red
+    // channel well above zero.
+    let hub = wide.srgb_to_rgb(wide.cmyk_to_srgb(cyan, false));
+    assert!(direct[0] + 0.15 < hub[0], "direct {direct:?}, through sRGB {hub:?}");
+    // Same colour either way where sRGB holds it: a mid grey and paper white.
+    for inks in [[0.0, 0.0, 0.0, 0.5], [0.0; 4]] {
+        let (d, h) = (wide.cmyk_to_rgb(inks, Intent::RelativeColorimetric), wide.srgb_to_rgb(wide.cmyk_to_srgb(inks, false)));
+        assert!(d.iter().zip(h).all(|(a, b)| (a - b).abs() < 0.02), "{inks:?}: direct {d:?}, through sRGB {h:?}");
+    }
+    // Cms::convert takes the direct route for CMYK.
+    let Color::Rgb { r, .. } = wide.convert(&Color::Cmyk { c: 1.0, m: 0.0, y: 0.0, k: 0.0 }, Model::Rgb, Intent::RelativeColorimetric) else {
+        panic!("RGB")
+    };
+    assert!((r - direct[0]).abs() < 1e-6);
+}
+
+#[test]
+fn black_point_compensation_maps_the_darkest_ink_to_rgb_black() {
+    let rich = [0.75, 0.68, 0.67, 0.9];
+    let (on, off) = (icc_cmyk(true).cmyk_to_rgb(rich, Intent::RelativeColorimetric), icc_cmyk(false).cmyk_to_rgb(rich, Intent::RelativeColorimetric));
+    // Without compensation the profile's black is a dark grey; with it, rich black goes most of
+    // the way to RGB black (not all: it isn't quite the darkest ink the profile prints).
+    assert!(off.iter().all(|v| *v > 0.1), "without: {off:?}");
+    assert!(on.iter().zip(off).all(|(a, b)| *a < 0.08 && *a < b * 0.5), "with: {on:?}, without: {off:?}");
+    // The screen shows what an sRGB conversion writes, compensated alike.
+    let srgb = |bpc| {
+        let c = icc_cmyk(bpc);
+        Cms::new(&ColorSettings { rgb: SRGB.into(), ..c.settings().clone() }).unwrap()
+    };
+    for bpc in [true, false] {
+        let c = srgb(bpc);
+        assert_eq!(c.cmyk_to_srgb(rich, false), c.cmyk_to_rgb(rich, Intent::RelativeColorimetric), "bpc {bpc}");
+    }
+    // White is untouched, and absolute colorimetric never compensates.
+    let white = icc_cmyk(true).cmyk_to_rgb([0.0; 4], Intent::RelativeColorimetric);
+    assert!(white.iter().all(|v| *v > 0.99), "{white:?}");
+    let abs = |bpc| icc_cmyk(bpc).cmyk_to_rgb(rich, Intent::AbsoluteColorimetric);
+    assert_eq!(abs(true), abs(false));
+}

crates/doc/src/cmyk.rs

@@ -136,10 +136,65 @@ fn tiff_inks(bytes: &[u8]) -> Option<Inks> {
     Inks::new(w, h, data)
 }
 
+/// A CMYK TIFF with an alpha channel (5 samples) as RGBA pixels, each colour converted by `rgb`
+/// (ink amounts 0..1 → sRGB 0..1) and associated (premultiplied) alpha divided back out; `None`
+/// for other images, planar ones and ones larger than [`MAX_CMYK_PIXELS`]. The image decoder
+/// doesn't read these at all; the inks can't be kept with the transparency, so they show as RGB.
+pub fn cmyka_tiff_rgba(bytes: &[u8], rgb: impl Fn([f32; 4]) -> [f32; 3]) -> Option<image::RgbaImage> {
+    let (kind, mut d) = tiff(bytes)?;
+    let (w, h) = d.dimensions().ok()?;
+    let planar = d.find_tag_unsigned::<u16>(tiff::tags::Tag::PlanarConfiguration).ok().flatten().is_some_and(|p| p != 1);
+    if !matches!(kind, tiff::ColorType::CMYKA(8 | 16)) || planar {
+        return None;
+    }
+    let n = usize::try_from(pixels(w, h)?).ok()?;
+    // ExtraSamples 1: associated alpha (premultiplied colour); 2 (or none stated): unassociated.
+    let associated = d.find_tag_unsigned_vec::<u16>(tiff::tags::Tag::ExtraSamples).ok().flatten().is_some_and(|v| v.first() == Some(&1));
+    let data: Vec<u8> = match d.read_image().ok()? {
+        tiff::decoder::DecodingResult::U8(v) => v,
+        tiff::decoder::DecodingResult::U16(v) => v.iter().map(|s| (s >> 8) as u8).collect(),
+        _ => return None,
+    };
+    if data.len() != n * 5 {
+        return None;
+    }
+    let mut out = Vec::with_capacity(n * 4);
+    for p in data.as_chunks::<5>().0 {
+        let a = f32::from(p[4]) / 255.0;
+        let ink = |v: u8| {
+            let v = f32::from(v) / 255.0;
+            if associated && a > 0.0 { (v / a).min(1.0) } else { v }
+        };
+        let [r, g, b] = rgb([ink(p[0]), ink(p[1]), ink(p[2]), ink(p[3])]);
+        out.extend([r, g, b].map(|v| (v.clamp(0.0, 1.0) * 255.0).round() as u8));
+        out.push(p[4]);
+    }
+    image::RgbaImage::from_raw(w, h, out)
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
 
+    #[test]
+    fn a_cmyk_tiff_with_alpha_reads_as_rgba() {
+        use tiff::encoder::{TiffEncoder, colortype::CMYKA8};
+        // 2 × 1: full cyan opaque, then 100% K at half alpha (premultiplied: K 128, alpha 128).
+        let mut file = Cursor::new(Vec::new());
+        let mut enc = TiffEncoder::new(&mut file).unwrap();
+        let mut img = enc.new_image::<CMYKA8>(2, 1).unwrap();
+        img.encoder().write_tag(tiff::tags::Tag::ExtraSamples, &[1u16][..]).unwrap();
+        img.write_data(&[255, 0, 0, 0, 255, 0, 0, 0, 128, 128]).unwrap();
+        let bytes = file.into_inner();
+        let naive = |[c, m, y, k]: [f32; 4]| [(1.0 - c) * (1.0 - k), (1.0 - m) * (1.0 - k), (1.0 - y) * (1.0 - k)];
+        let px = cmyka_tiff_rgba(&bytes, naive).expect("CMYKA reads");
+        assert_eq!(px.dimensions(), (2, 1));
+        assert_eq!(px.get_pixel(0, 0).0, [0, 255, 255, 255], "cyan, opaque");
+        assert_eq!(px.get_pixel(1, 0).0, [0, 0, 0, 128], "the premultiplied K divided back out: black at half alpha");
+        // Not CMYKA: not this reader's.
+        assert!(cmyka_tiff_rgba(&ImageBlob::cmyk_tiff(&inks()).unwrap().bytes, naive).is_none());
+    }
+
     fn inks() -> Inks {
         Inks::new(3, 2, vec![0, 40, 100, 0, 255, 0, 0, 0, 0, 255, 0, 0, 0, 0, 255, 0, 0, 0, 0, 255, 12, 34, 56, 78]).unwrap()
     }

crates/doc/src/lib.rs

@@ -40,6 +40,7 @@ pub mod slices;
 pub mod style_libs;
 pub mod swatches;
 pub mod text;
+pub mod trace;
 
 use std::collections::BTreeMap;
 use std::sync::Arc;
@@ -89,6 +90,7 @@ pub use text::{
     ParaDirection, ParaStyle, PathAlign, PathEffect, ScriptMetrics, TabAlign, TabStop, TextKind, TextObject, TextRun, TextStyleDef, TextWrap,
     VerticalAlign, WrapShape,
 };
+pub use trace::TraceView;
 pub use vectorcraft_color as color;
 pub use vectorcraft_geom as geom;
 

crates/doc/src/node.rs

@@ -463,7 +463,8 @@ pub struct Node {
     /// Opacity mask (Transparency panel). Its art lives here, outside the layer tree.
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub mask: Option<Box<OpacityMask>>,
-    /// Image Trace object: `{preset, params}` it was traced with (the Image Trace panel shows them).
+    /// Image Trace object: `{preset, params, view?}` it was traced with (the Image Trace panel shows
+    /// them; `view` is its [`crate::TraceView`] id, absent for the tracing result).
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub trace: Option<Box<serde_json::Value>>,
     /// Object → Text Wrap: area type below this object (in the same layer) flows around it.

crates/doc/src/trace.rs

@@ -0,0 +1,92 @@
+//! Image Trace objects' View: how a live trace draws on screen.
+//!
+//! An Image Trace object is a group whose `trace` holds `{preset, params, view}` (see
+//! `imageTrace.make`). The view is a viewing aid only: exports, printing and Expand always use the
+//! tracing result, whatever it is set to.
+
+use crate::node::Node;
+
+/// Image Trace › View.
+#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
+pub enum TraceView {
+    /// The traced shapes as they are filled.
+    #[default]
+    Result,
+    /// The traced shapes, with their outlines over them.
+    ResultWithOutlines,
+    /// Only the traced shapes' outlines.
+    Outlines,
+    /// The source image, with the traced shapes' outlines over it.
+    OutlinesWithSource,
+    /// Only the source image.
+    Source,
+}
+
+impl TraceView {
+    /// Panel order.
+    pub const ALL: [Self; 5] = [Self::Result, Self::ResultWithOutlines, Self::Outlines, Self::OutlinesWithSource, Self::Source];
+
+    /// The id used in command params and in the saved `trace` object.
+    pub fn id(self) -> &'static str {
+        match self {
+            Self::Result => "tracingResult",
+            Self::ResultWithOutlines => "tracingResultWithOutlines",
+            Self::Outlines => "outlines",
+            Self::OutlinesWithSource => "outlinesWithSourceImage",
+            Self::Source => "sourceImage",
+        }
+    }
+
+    /// The view an id names (any case).
+    pub fn from_id(id: &str) -> Option<Self> {
+        Self::ALL.into_iter().find(|v| v.id().eq_ignore_ascii_case(id))
+    }
+
+    /// The view an Image Trace object's `trace` settings ask for (the tracing result when they
+    /// name none, or an unknown one).
+    pub fn of(trace: &serde_json::Value) -> Self {
+        trace.get("view").and_then(serde_json::Value::as_str).and_then(Self::from_id).unwrap_or_default()
+    }
+
+    /// Whether the source image shows.
+    pub fn shows_source(self) -> bool {
+        matches!(self, Self::OutlinesWithSource | Self::Source)
+    }
+
+    /// Whether the traced shapes show filled.
+    pub fn shows_result(self) -> bool {
+        matches!(self, Self::Result | Self::ResultWithOutlines)
+    }
+
+    /// Whether the traced shapes' outlines show.
+    pub fn shows_outlines(self) -> bool {
+        matches!(self, Self::ResultWithOutlines | Self::Outlines | Self::OutlinesWithSource)
+    }
+}
+
+impl Node {
+    /// The View of an Image Trace object (the tracing result for anything else, or an unknown id).
+    pub fn trace_view(&self) -> TraceView {
+        self.trace.as_deref().map(TraceView::of).unwrap_or_default()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn ids_round_trip_and_unknown_views_show_the_result() {
+        for v in TraceView::ALL {
+            assert_eq!(TraceView::from_id(v.id()), Some(v));
+            assert_eq!(TraceView::from_id(&v.id().to_ascii_uppercase()), Some(v));
+            assert!(v.shows_result() || v.shows_outlines() || v.shows_source(), "{v:?} shows something");
+        }
+        let mut g = Node::group(crate::NodeId(1), vec![]);
+        assert_eq!(g.trace_view(), TraceView::Result);
+        g.trace = Some(Box::new(serde_json::json!({"view": "outlines"})));
+        assert_eq!(g.trace_view(), TraceView::Outlines);
+        g.trace = Some(Box::new(serde_json::json!({"view": "sepia"})));
+        assert_eq!(g.trace_view(), TraceView::Result);
+    }
+}

crates/engine/src/cmd/buildcmds.rs

@@ -14,8 +14,8 @@ use std::sync::Arc;
 
 use serde_json::{Value, json};
 use vectorcraft_color::{Color, Paint};
-use vectorcraft_doc::appearance::{AppearanceItem, FillLayer, StrokeLayer};
-use vectorcraft_doc::{Appearance, Document, Node, NodeId, NodeKind, Selection};
+use vectorcraft_doc::appearance::{AppearanceItem, FillLayer, LineCap, LineJoin, StrokeLayer};
+use vectorcraft_doc::{Appearance, Document, Node, NodeId, NodeKind, Selection, TraceView};
 use vectorcraft_geom::{FillRule, PathData, Point, Rect, SubPath};
 use vectorcraft_pathops as po;
 use vectorcraft_tools::builder::{
@@ -120,7 +120,7 @@ pub fn specs() -> Vec<CommandSpec> {
             "Make",
             ["Object", "Image Trace"],
             None,
-            "{id?: image or Image Trace group (default: selection), preset?: name (imageTrace.presets), params?: {mode: \"blackAndWhite\"|\"grayscale\"|\"color\", threshold: 0-255, colors: 2-256, paths: 0-100, corners: 0-100, noise: px, method: \"abutting\"|\"overlapping\", ignoreWhite, snapCurvesToLines}} → {id, paths, anchors, colors}",
+            "{id?: image or Image Trace group (default: selection), preset?: name (imageTrace.presets), params?: {mode: \"blackAndWhite\"|\"grayscale\"|\"color\", threshold: 0-255, palette: \"limited\"|\"fullTone\"|\"automatic\"|\"documentLibrary\" (color mode; limited: the `colors` best colours, fullTone: as many as the tones need, more with colorDetail, automatic: flat art with its own colours, else fullTone, documentLibrary: at most `colors` of the library's colours, as they are), colors: 2-256, colorDetail: 0-100 (fullTone, automatic), library: \"document\" (the document's swatches) or a swatch library id or name (swatch.library.list; documentLibrary), paths: 0-100, corners: 0-100, noise: px, method: \"abutting\"|\"overlapping\", ignoreWhite, snapCurvesToLines, fills: true, strokes: false (Create: lines up to strokeWidth wide become stroked centre lines; without fills, wider areas become stroked outlines), strokeWidth: px (10)}, view?: as imageTrace.setView (default: the traced object's own, else tracingResult)} → {id, paths, anchors, colors}",
             has_selection_or_ids,
             |s, p| trace_make(s, p, false)
         ),
@@ -151,6 +151,15 @@ pub fn specs() -> Vec<CommandSpec> {
             has_selection_or_ids,
             trace_expand
         ),
+        cmd!(
+            "imageTrace.setView",
+            "Image Trace View",
+            [],
+            None,
+            "{id?|ids?: Image Trace objects (default: selection), view: \"tracingResult\"|\"tracingResultWithOutlines\"|\"outlines\"|\"outlinesWithSourceImage\"|\"sourceImage\"} how they draw on screen; exports, printing and Expand keep the tracing result → {ids, view}",
+            has_selection_or_ids,
+            trace_set_view
+        ),
         cmd!(query "imageTrace.presets", "Image Trace Presets", [], None, "{} → {presets: [{name, params}]}", always, |_, _| {
             Ok(json!({ "presets": tr::presets().into_iter().map(|(n, p)| json!({ "name": n, "params": p })).collect::<Vec<_>>() }))
         }),
@@ -639,6 +648,13 @@ fn is_trace_group(n: &Node) -> bool {
         && n.children().is_some_and(|c| c.first().is_some_and(|i| matches!(i.kind, NodeKind::Image(_))))
 }
 
+/// The `view` param ([`TraceView`] id), if given.
+fn view_param(cmd: &str, p: &Value) -> Result<Option<TraceView>> {
+    let Some(v) = p.get("view").filter(|v| !v.is_null()) else { return Ok(None) };
+    let ids = || TraceView::ALL.map(TraceView::id).join(", ");
+    v.as_str().and_then(TraceView::from_id).map(Some).ok_or_else(|| bad(cmd, format!("view must be one of {}", ids())))
+}
+
 fn trace_params(p: &Value) -> Result<tr::TraceParams> {
     let name = str_param(p, "preset").unwrap_or("Default");
     let base = tr::preset(name).ok_or_else(|| bad("imageTrace.make", format!("unknown preset `{name}` (see imageTrace.presets)")))?;
@@ -648,7 +664,38 @@ fn trace_params(p: &Value) -> Result<tr::TraceParams> {
     for (k, val) in src {
         o.insert(k.clone(), val.clone());
     }
-    serde_json::from_value(v).map_err(|e| bad("imageTrace.make", e.to_string()))
+    let params: tr::TraceParams = serde_json::from_value(v).map_err(|e| bad("imageTrace.make", e.to_string()))?;
+    if !params.fills && !params.strokes {
+        return Err(bad("imageTrace.make", "Create needs fills, strokes or both"));
+    }
+    if !(params.stroke_width.is_finite() && params.stroke_width > 0.0) {
+        return Err(bad("imageTrace.make", "strokeWidth must be a positive number of pixels"));
+    }
+    Ok(params)
+}
+
+/// Document Library in Color mode: look the library's colours up into `params.swatches` → each
+/// one as traced (sRGB) with the colour to fill with.
+fn trace_library(s: &Session, params: &mut tr::TraceParams) -> Result<Vec<([u8; 3], Color)>> {
+    const C: &str = "imageTrace.make";
+    if params.mode != tr::Mode::Color || params.palette != tr::Palette::DocumentLibrary {
+        return Ok(vec![]);
+    }
+    let key = params.library.as_str();
+    let colors = super::swatchlib::library_colors(s, key)
+        .ok_or_else(|| bad(C, format!("no swatch library `{key}` (see swatch.library.list; \"document\": the document's swatches)")))?;
+    if colors.is_empty() {
+        return Err(bad(C, format!("`{key}` has no colours")));
+    }
+    let library: Vec<([u8; 3], Color)> = colors
+        .into_iter()
+        .map(|c| {
+            let [r, g, b, _] = c.to_rgba8(1.0);
+            ([r, g, b], c)
+        })
+        .collect();
+    params.swatches = library.iter().map(|l| l.0).collect();
+    Ok(library)
 }
 
 /// The most anchor points an Image Trace may make: a photo traced at high fidelity can make
@@ -658,7 +705,8 @@ pub const MAX_TRACE_ANCHORS: usize = 2_000_000;
 
 fn trace_make(s: &mut Session, p: &Value, expand: bool) -> Result<Value> {
     const C: &str = "imageTrace.make";
-    let params = trace_params(p)?;
+    let mut params = trace_params(p)?;
+    let view = view_param(C, p)?;
     let params_json = serde_json::to_value(&params).map_err(|e| EngineError::Other(e.to_string()))?;
     // The preset's name if the parameters are exactly that preset's, else "Custom".
     let named = str_param(p, "preset").unwrap_or("Default");
@@ -687,11 +735,14 @@ fn trace_make(s: &mut Session, p: &Value, expand: bool) -> Result<Value> {
     };
     let blob = s.doc()?.doc.images.get(&img.key).ok_or_else(|| EngineError::Other(format!("image data `{}` is missing", img.key)))?;
     let raster = tr::Raster::decode(&blob.bytes).map_err(|e| EngineError::Other(e.to_string()))?;
+    let library = trace_library(s, &mut params)?;
     let res = tr::trace_within(&raster, &params, MAX_TRACE_ANCHORS).map_err(|e| EngineError::Other(e.to_string()))?;
     // Pixel space of the decoded raster → the image object's pixel space → document.
     let sx = img.width.max(1) as f64 / raster.width.max(1) as f64;
     let sy = img.height.max(1) as f64 / raster.height.max(1) as f64;
     let xf = img.xf * vectorcraft_geom::Affine::scale_non_uniform(sx, sy);
+    // Document units per raster pixel (stroke widths).
+    let unit = xf.determinant().abs().sqrt();
     let (npaths, anchors, colors) = (res.paths.len(), res.anchor_count(), res.palette.len());
     let label = if expand { "Image Trace (Make and Expand)" } else { "Image Trace" };
     let id = s.edit(label, |d, sel| {
@@ -714,14 +765,30 @@ fn trace_make(s: &mut Session, p: &Value, expand: bool) -> Result<Value> {
         for tp in res.paths {
             let path = tp.path.transformed(xf);
             let mut n = shape_node(d, path, None);
-            n.appearance = fill_only(Paint::solid(Color::rgb8(tp.color[0], tp.color[1], tp.color[2])));
+            // A library colour fills with the swatch's own colour (its model kept).
+            let color = library.iter().find(|(rgb, _)| *rgb == tp.color).map_or_else(|| Color::rgb8(tp.color[0], tp.color[1], tp.color[2]), |l| l.1);
+            let paint = Paint::solid(color);
+            n.appearance = match tp.stroke {
+                // Traced lines: round ends and corners, as drawn lines have.
+                Some(width) => Appearance {
+                    items: vec![AppearanceItem::Stroke(StrokeLayer {
+                        cap: LineCap::Round,
+                        join: LineJoin::Round,
+                        ..StrokeLayer::new(paint, width * unit)
+                    })],
+                    ..Default::default()
+                },
+                None => fill_only(paint),
+            };
             children.push(Arc::new(n));
         }
         let gid = d.alloc_id();
         let mut g = Node::group(gid, children);
         g.name = if expand { None } else { Some(TRACE_NAME.into()) };
         if !expand {
-            g.trace = Some(Box::new(json!({ "preset": preset_label, "params": params_json })));
+            // Tracing again keeps the object's view unless another is asked for.
+            let view = view.unwrap_or_else(|| src.trace_view());
+            g.trace = Some(Box::new(json!({ "preset": preset_label, "params": params_json, "view": view.id() })));
         }
         let (par, idx, _) = d.position(target).ok_or(EngineError::NoNode(target))?;
         d.remove(target)?;
@@ -741,6 +808,28 @@ fn trace_targets(s: &Session, p: &Value) -> Result<Vec<NodeId>> {
     Ok(v)
 }
 
+fn trace_set_view(s: &mut Session, p: &Value) -> Result<Value> {
+    const C: &str = "imageTrace.setView";
+    let view = view_param(C, p)?.ok_or_else(|| bad(C, "view is required"))?;
+    let targets = trace_targets(s, p)?;
+    let d = &s.doc()?.doc;
+    if targets.iter().all(|g| d.node(*g).is_some_and(|n| n.trace_view() == view)) {
+        return Ok(json!({ "ids": ids_json(&targets), "view": view.id() }));
+    }
+    s.edit("Image Trace View", |d, _| {
+        for g in &targets {
+            let n = d.node_mut(*g).ok_or(EngineError::NoNode(*g))?;
+            if let Some(t) = n.trace.as_deref_mut().and_then(Value::as_object_mut) {
+                t.insert("view".into(), json!(view.id()));
+            } else {
+                n.trace = Some(Box::new(json!({ "preset": "Custom", "view": view.id() })));
+            }
+        }
+        Ok(())
+    })?;
+    Ok(json!({ "ids": ids_json(&targets), "view": view.id() }))
+}
+
 fn trace_release(s: &mut Session, p: &Value) -> Result<Value> {
     let targets = trace_targets(s, p)?;
     let ids = s.edit("Release Image Trace", |d, sel| {

crates/engine/src/cmd/fileio/load.rs

@@ -282,10 +282,19 @@ pub(super) fn new_from_template(s: &mut Session, p: &Value) -> Result<Value> {
     open_template(s, src.name, &src.bytes, src.path)
 }
 
+/// The most memory decoding one image may take: a 60 in print sheet at 300 ppi (18000 × 6600 px)
+/// is ~475 MB as RGBA, past the decoder's 512 MB default once it is converted. The web app keeps
+/// that default: wasm32 has 4 GB to address and aborts when an allocation fails.
+const MAX_RASTER_ALLOC: u64 = if cfg!(target_arch = "wasm32") { 512 << 20 } else { 2 << 30 };
+
 /// Decode an image's header (and, for formats stored as PNG, its pixels). CMYK TIFFs are kept as
-/// they are, with their ink amounts ([`ImageBlob::cmyk`]).
+/// they are, with their ink amounts ([`ImageBlob::cmyk`]); CMYK TIFFs with an alpha channel, which
+/// the decoder can't read, become RGBA in the active colour settings' CMYK.
 pub fn raster_image(bytes: &[u8]) -> Result<RasterImage> {
-    let reader = image::ImageReader::new(Cursor::new(bytes)).with_guessed_format().map_err(err)?;
+    let mut reader = image::ImageReader::new(Cursor::new(bytes)).with_guessed_format().map_err(err)?;
+    let mut limits = image::Limits::default();
+    limits.max_alloc = Some(MAX_RASTER_ALLOC);
+    reader.limits(limits);
     let kind = reader.format().ok_or_else(|| err("not an image VectorCraft reads (see document.formats)"))?;
     let f = image_format(kind).ok_or_else(|| err(format!("{kind:?} images can't be opened (see document.formats)")))?;
     let ppi = super::ppi::resolution(bytes);
@@ -293,7 +302,14 @@ pub fn raster_image(bytes: &[u8]) -> Result<RasterImage> {
     let (bytes, mime, (width, height)) = if matches!(f.id, "png" | "jpg" | "gif" | "webp") || (f.id == "tiff" && cmyk()) {
         (bytes.to_vec(), f.mime, reader.into_dimensions().map_err(err)?)
     } else {
-        let img = reader.decode().map_err(err)?.to_rgba8();
+        let cmyka = || {
+            let cms = vectorcraft_color::cms::active();
+            vectorcraft_doc::cmyk::cmyka_tiff_rgba(bytes, |c| cms.cmyk_to_srgb(c, false))
+        };
+        let img = match (f.id == "tiff").then(cmyka).flatten() {
+            Some(img) => img,
+            None => reader.decode().map_err(err)?.to_rgba8(),
+        };
         let size = img.dimensions();
         let mut png = Vec::new();
         img.write_to(&mut Cursor::new(&mut png), image::ImageFormat::Png).map_err(err)?;
@@ -311,16 +327,16 @@ pub fn raster_image(bytes: &[u8]) -> Result<RasterImage> {
     Ok(RasterImage { key: blob.content_key(), blob, width, height, ppi })
 }
 
-/// An image as a document of its pixel size (1 px = 1 pt), the image named after the file.
+/// An image as a document of its physical size at the resolution it declares (as Place sizes it;
+/// 72 ppi, 1 px = 1 pt, when it declares none), the image named after the file.
 fn raster_doc(name: &str, bytes: &[u8]) -> Result<Document> {
-    let RasterImage { key, blob, width, height, .. } = raster_image(bytes)?;
-    let mut d = Document::new(width as f64, height as f64);
+    let RasterImage { key, blob, width, height, ppi } = raster_image(bytes)?;
+    let (sx, sy) = crate::cmd::place::pt_per_px(ppi);
+    let mut d = Document::new(width as f64 * sx, height as f64 * sy);
     let layer = d.layers[0].id;
     let id = d.alloc_id();
-    let mut n = Node::new(
-        id,
-        NodeKind::Image(ImageObject { key: key.clone(), width, height, xf: Affine::IDENTITY, link: None, placement: Default::default() }),
-    );
+    let xf = Affine::scale_non_uniform(sx, sy);
+    let mut n = Node::new(id, NodeKind::Image(ImageObject { key: key.clone(), width, height, xf, link: None, placement: Default::default() }));
     n.name = Some(name.to_string());
     d.images.insert(key, blob);
     d.insert(Some(layer), 0, n).map_err(err)?;

crates/engine/src/cmd/fileio/mod.rs

@@ -78,7 +78,7 @@ pub fn specs() -> Vec<CommandSpec> {
             "Open Document",
             [],
             None,
-            "{path} or {name, dataBase64}, PDF/.ai: pages?: \"2-3, 5\" (1-based, default all; one artboard each) | page?: n, cropTo?: bounding|art|crop (default)|trim|bleed|media (the box each artboard gets; bounding: the art's bounds), password? (encrypted PDFs; see document.pdfInfo), textAs?: text (default: point type per line, lines wrapped in a frame as area type where they lay out the same, in the file's fonts by name; missing ones are listed in warnings) | outlines (glyph paths), layers?: true (default: optional content groups become layers with their visibility, print state and lock — art that is off comes in as a hidden layer; other art goes to a layer per page) | false (one layer per page, without the art that is off; Save then asks for a name), colorMode?: rgb|cmyk (the mode the document opens in, its colours converted as file.documentColorMode does, grays? as there; default: the file's — a PDF keeps CMYK, Gray and spot inks (spot swatches at a tint) and opens in CMYK when painted mostly in CMYK), DXF: dxf?: {layout?: \"Model\" (default) | a paper layout's name (document.dxfInfo lists them), unit?, scale? (the ratio: 1 unit of the art = scale drawing units; default: the drawing at 1:1 in its own unit), fit?: false (scale to fit an artboard of fitTo?: [612, 792], turned to the art's orientation), scaleLineweights?: false (lineweights scale with the art), center?: true (false: the drawing's origin on the artboard's bottom-left corner; fitted art's bottom-left corner), mergeLayers?: false (all art on one layer)} → {index, title, format, warnings, restored, missingLinks, modifiedLinks, updatedLinks: [{name, path, ids}]}; any readable format (see document.formats): .vectorcraft/.drawcraft, .svg/.svgz, .pdf/.ai, .ait, ASCII .dxf (each DXF layer with art a layer; blocks symbols; what can't come in is listed in warnings), PNG/JPEG/GIF/WebP/TIFF/BMP (an image opens as a document of its pixel size), .emf/.wmf (one artboard, the picture's frame; records VectorCraft doesn't read are skipped with one warning), .eps and PostScript .ai (one artboard, the bounding box: an EPS file VectorCraft wrote restores the document it carries, restored: true; other files are read by a PostScript interpreter — paths, colours and spot inks, clips, gradients, images, type in the fonts named — and come in as their TIFF preview, with a warning, when their PostScript can't be read). A PDF/.ai/.ait or SVG saved with Preserve Editing restores the native document it carries (restored: true; a PDF only when no pages are picked), unless the file was changed elsewhere since or the data can't be read: then its artwork is imported and the first warning says why. Templates (native templates, .ait) open as a new untitled document; a restored .ai keeps its path (Save writes .ai again). Linked images are read from their files (looked for at their path, then relative to the document): missing ones show their saved preview (links.relink), modified ones are read again only with Preferences › Update Links: Automatically (else links.update). An SVG's <image> files (relative links from the SVG's folder) stay linked, SVG files become art, missing ones a placeholder in their box (a warning and missingLinks)",
+            "{path} or {name, dataBase64}, PDF/.ai: pages?: \"2-3, 5\" (1-based, default all; one artboard each) | page?: n, cropTo?: bounding|art|crop (default)|trim|bleed|media (the box each artboard gets; bounding: the art's bounds), password? (encrypted PDFs; see document.pdfInfo), textAs?: text (default: point type per line, lines wrapped in a frame as area type where they lay out the same, in the file's fonts by name; missing ones are listed in warnings) | outlines (glyph paths), layers?: true (default: optional content groups become layers with their visibility, print state and lock — art that is off comes in as a hidden layer; other art goes to a layer per page) | false (one layer per page, without the art that is off; Save then asks for a name), colorMode?: rgb|cmyk (the mode the document opens in, its colours converted as file.documentColorMode does, grays? as there; default: the file's — a PDF keeps CMYK, Gray and spot inks (spot swatches at a tint) and opens in CMYK when painted mostly in CMYK), DXF: dxf?: {layout?: \"Model\" (default) | a paper layout's name (document.dxfInfo lists them), unit?, scale? (the ratio: 1 unit of the art = scale drawing units; default: the drawing at 1:1 in its own unit), fit?: false (scale to fit an artboard of fitTo?: [612, 792], turned to the art's orientation), scaleLineweights?: false (lineweights scale with the art), center?: true (false: the drawing's origin on the artboard's bottom-left corner; fitted art's bottom-left corner), mergeLayers?: false (all art on one layer)} → {index, title, format, warnings, restored, missingLinks, modifiedLinks, updatedLinks: [{name, path, ids}]}; any readable format (see document.formats): .vectorcraft/.drawcraft, .svg/.svgz, .pdf/.ai, .ait, ASCII .dxf (each DXF layer with art a layer; blocks symbols; what can't come in is listed in warnings), PNG/JPEG/GIF/WebP/TIFF/BMP (an image opens as a document of its size at the resolution it declares, as file.place sizes it; 72 ppi, 1 px = 1 pt, when it declares none), .emf/.wmf (one artboard, the picture's frame; records VectorCraft doesn't read are skipped with one warning), .eps and PostScript .ai (one artboard, the bounding box: an EPS file VectorCraft wrote restores the document it carries, restored: true; other files are read by a PostScript interpreter — paths, colours and spot inks, clips, gradients, images, type in the fonts named — and come in as their TIFF preview, with a warning, when their PostScript can't be read). A PDF/.ai/.ait or SVG saved with Preserve Editing restores the native document it carries (restored: true; a PDF only when no pages are picked), unless the file was changed elsewhere since or the data can't be read: then its artwork is imported and the first warning says why. Templates (native templates, .ait) open as a new untitled document; a restored .ai keeps its path (Save writes .ai again). Linked images are read from their files (looked for at their path, then relative to the document): missing ones show their saved preview (links.relink), modified ones are read again only with Preferences › Update Links: Automatically (else links.update). An SVG's <image> files (relative links from the SVG's folder) stay linked, SVG files become art, missing ones a placeholder in their box (a warning and missingLinks)",
             always,
             load::open
         ),

crates/engine/src/cmd/fileio/tests_raster.rs

@@ -147,3 +147,19 @@ fn the_document_background_is_the_default_export_background() {
     assert_eq!(png(&mut s, json!({"format": "png", "background": "transparent"})).get_pixel(0, 0)[3], 0, "the option wins");
     assert_eq!(png(&mut s, json!({"format": "webp", "background": "black"})).get_pixel(0, 0).0, [0, 0, 0, 255]);
 }
+
+#[test]
+fn an_image_opens_at_the_size_its_resolution_declares() {
+    let mut s = session(72.0, 36.0, 1);
+    let hi = b64(&s.execute("document.export", &json!({"format": "png", "ppi": 300, "background": "white"})).unwrap());
+    let lo = b64(&s.execute("document.export", &json!({"format": "png", "background": "white"})).unwrap());
+    let lo = super::ppi::with_png_resolution(&lo, (72.0, 72.0));
+    for (png, w, h, what) in [(hi, 72.0, 36.0, "300 ppi: 300 x 150 px is 1 x 0.5 in"), (lo, 72.0, 36.0, "72 ppi: 1 px = 1 pt")] {
+        s.execute("document.open", &json!({"name": "art.png", "dataBase64": vectorcraft_format::base64_encode(&png)})).unwrap();
+        let doc = &s.doc().unwrap().doc;
+        let ab = doc.artboards[0].rect;
+        assert!((ab.width() - w).abs() < 1e-6 && (ab.height() - h).abs() < 1e-6, "{what}: artboard {ab:?}");
+        let art = doc.art_bounds().expect("the image");
+        assert!((art.width() - w).abs() < 1e-6 && (art.height() - h).abs() < 1e-6, "{what}: the image fills it, {art:?}");
+    }
+}

crates/engine/src/cmd/fonts.rs

@@ -247,7 +247,7 @@ fn font_list(_: &mut Session, p: &Value) -> Result<Value> {
     }
 }
 
-fn rescan(s: &mut Session, _: &Value) -> Result<Value> {
+pub(crate) fn rescan(s: &mut Session, _: &Value) -> Result<Value> {
     let db = vectorcraft_text::FontDb::global();
     #[cfg(not(target_arch = "wasm32"))]
     let faces = db.load_system_fonts();
@@ -283,6 +283,21 @@ fn rescan(s: &mut Session, _: &Value) -> Result<Value> {
 mod tests {
     use super::*;
 
+    /// Type › Options › Additional Fonts Folder (#683) adds its folder to the system font scan,
+    /// trimmed; clearing it takes the folder out again.
+    #[test]
+    fn the_additional_fonts_folder_joins_the_font_scan() {
+        let mut s = Session::new();
+        let dir = std::env::temp_dir().join("vectorcraft-fonts-folder-pref");
+        s.execute("prefs.set", &json!({"key": "fontsFolder", "value": format!("  {}  ", dir.display())})).unwrap();
+        assert_eq!(vectorcraft_text::user_font_dirs(), std::slice::from_ref(&dir));
+        if !cfg!(target_arch = "wasm32") {
+            assert!(vectorcraft_text::system_font_dirs().contains(&dir));
+        }
+        s.execute("prefs.set", &json!({"key": "fontsFolder", "value": ""})).unwrap();
+        assert!(vectorcraft_text::user_font_dirs().is_empty() && !vectorcraft_text::system_font_dirs().contains(&dir));
+    }
+
     #[test]
     fn list_flag_missing_replace_and_select() {
         let mut s = Session::new();

crates/engine/src/cmd/menucmds.rs

@@ -111,7 +111,7 @@ pub fn specs() -> Vec<CommandSpec> {
             "Crop Image",
             ["Object"],
             None,
-            "{rect?: [x, y, width, height]} crop the selected image (default: to the artboard it sits on) → {id, width, height}",
+            "{rect?: [x, y, width, height] | trim?: true (to the pixels that aren't fully transparent, pixel for pixel; an image with none to cut is left as it is, trimmed: false)} crop the selected image (default: to the artboard it sits on) → {id, width, height, trimmed? (with trim)}",
             has_image,
             crop_image
         ),
@@ -156,7 +156,7 @@ pub fn specs() -> Vec<CommandSpec> {
             "Rearrange All Artboards…",
             ["Object", "Artboards"],
             None,
-            "{columns?: n (2), spacing?: pt (20), byColumn?: false, moveArtwork?: true (locked and hidden art only with prefs moveLockedWithArtboard)} lay artboards out in a grid",
+            "{layout?: gridByRow|gridByColumn|row|column (gridByRow; byColumn?: true is gridByColumn), order?: leftToRight|rightToLeft (leftToRight: right-to-left mirrors the order along the rows), columns?: n (2; the rows for gridByColumn; row and column ignore it), spacing?: pt (20), moveArtwork?: true (locked and hidden art only with prefs moveLockedWithArtboard)} lay the artboards out in their order, the grid's top-left at the first artboard's → {artboards, rows, columns}",
             has_doc,
             rearrange_artboards
         ),
@@ -541,6 +541,9 @@ fn crop_image(s: &mut Session, p: &Value) -> Result<Value> {
         .ok_or_else(|| bad(C, "select an image"))?;
     let node = st.doc.node(id).cloned().ok_or(EngineError::NoNode(id))?;
     let NodeKind::Image(im) = &node.kind else { return Err(bad(C, "select an image")) };
+    if p.get("trim").and_then(Value::as_bool) == Some(true) {
+        return trim_image(s, id, im.clone());
+    }
     let ib = node.geometric_bounds().ok_or_else(|| bad(C, "image has no bounds"))?;
     let rect = match p.get("rect").and_then(Value::as_array) {
         Some(a) if a.len() == 4 => {
@@ -594,6 +597,49 @@ fn crop_image(s: &mut Session, p: &Value) -> Result<Value> {
     Ok(json!({ "id": id.0, "width": w, "height": h }))
 }
 
+/// Crop Image's trim: the image cut to the box of its pixels that aren't fully transparent, the
+/// pixels copied as they are (no resampling) and placed where they were.
+fn trim_image(s: &mut Session, id: NodeId, im: ImageObject) -> Result<Value> {
+    const C: &str = "object.cropImage";
+    let st = s.doc()?;
+    let blob = st.doc.images.get(&im.key).ok_or_else(|| bad(C, "the image's pixels are missing"))?;
+    let px = image::load_from_memory(&blob.bytes).map_err(|_| bad(C, "the image's pixels can't be read"))?.to_rgba8();
+    let (w, h) = px.dimensions();
+    let (mut x0, mut y0, mut x1, mut y1) = (w, h, 0, 0);
+    for (x, y, p) in px.enumerate_pixels() {
+        if p[3] > 0 {
+            (x0, y0, x1, y1) = (x0.min(x), y0.min(y), x1.max(x + 1), y1.max(y + 1));
+        }
+    }
+    if x1 <= x0 || y1 <= y0 {
+        return Err(bad(C, "the image is fully transparent"));
+    }
+    if (x0, y0, x1, y1) == (0, 0, w, h) {
+        // Already trimmed: not an error, so a script can trim every image it opens.
+        return Ok(json!({ "id": id.0, "width": w, "height": h, "trimmed": false }));
+    }
+    let cut = image::imageops::crop_imm(&px, x0, y0, x1 - x0, y1 - y0).to_image();
+    let mut png = Vec::new();
+    cut.write_to(&mut std::io::Cursor::new(&mut png), image::ImageFormat::Png).map_err(|e| bad(C, e.to_string()))?;
+    let (cw, ch) = (x1 - x0, y1 - y0);
+    s.edit("Crop Image", |d, _| {
+        let key = unique_key(d, "crop");
+        d.images.insert(key.clone(), vectorcraft_doc::ImageBlob::new("image/png", png));
+        if let Some(n) = d.node_mut(id) {
+            n.kind = NodeKind::Image(ImageObject {
+                key,
+                width: cw,
+                height: ch,
+                xf: im.xf * Affine::translate((f64::from(x0), f64::from(y0))),
+                link: None,
+                placement: Default::default(),
+            });
+        }
+        Ok(())
+    })?;
+    Ok(json!({ "id": id.0, "width": cw, "height": ch, "trimmed": true }))
+}
+
 /// The Control bar's Mask for an image: a clip group of the image and a clipping path on its
 /// outline, with that path selected so dragging its handles crops the image.
 fn mask_image(s: &mut Session, _: &Value) -> Result<Value> {
@@ -777,10 +823,32 @@ fn convert_to_artboards(s: &mut Session, _: &Value) -> Result<Value> {
 }
 
 fn rearrange_artboards(s: &mut Session, p: &Value) -> Result<Value> {
-    let n_ab = s.doc()?.doc.artboards.len().max(1);
-    let cols = (f64_or(p, "columns", 2.0).clamp(1.0, n_ab as f64)) as usize;
+    const CMD: &str = "artboard.rearrange";
+    use super::newdoc::ArtboardLayout as L;
+    // A value given (not null) must be one of the names.
+    let named = |key: &str| p.get(key).filter(|v| !v.is_null()).map(|v| v.as_str().unwrap_or_default());
+    let layout = match named("layout") {
+        Some(l) => L::parse(l).ok_or_else(|| bad(CMD, "layout must be gridByRow, gridByColumn, row or column"))?,
+        None if bool_or(p, "byColumn", false) => L::GridByColumn,
+        None => L::GridByRow,
+    };
+    let rtl = match named("order") {
+        None => false,
+        Some(o) if o.eq_ignore_ascii_case("leftToRight") => false,
+        Some(o) if o.eq_ignore_ascii_case("rightToLeft") => true,
+        Some(_) => return Err(bad(CMD, "order must be leftToRight or rightToLeft")),
+    };
+    let count = s.doc()?.doc.artboards.len();
+    let n_ab = count.max(1);
+    // Columns of a grid by row, rows of a grid by column (NaN casts to 0).
+    let lines = (f64_or(p, "columns", 2.0).clamp(1.0, n_ab as f64) as usize).max(1);
+    let (rows, cols) = match layout {
+        L::GridByRow => (n_ab.div_ceil(lines), lines),
+        L::GridByColumn => (lines, n_ab.div_ceil(lines)),
+        L::Row => (1, n_ab),
+        L::Column => (n_ab, 1),
+    };
     let spacing = f64_or(p, "spacing", 20.0).clamp(-1.0e5, 1.0e5);
-    let by_col = bool_or(p, "byColumn", false);
     let move_art = bool_or(p, "moveArtwork", true);
     let locked_and_hidden = s.prefs.move_locked_with_artboard;
     let scale_strokes = false;
@@ -788,7 +856,7 @@ fn rearrange_artboards(s: &mut Session, p: &Value) -> Result<Value> {
         let rects: Vec<Rect> = d.artboards.iter().map(|a| a.rect).collect();
         let Some(first) = rects.first().copied() else { return Ok(()) };
         let sizes: Vec<(f64, f64)> = rects.iter().map(|r| (r.width(), r.height())).collect();
-        let origins = super::newdoc::grid_origins(&sizes, first.origin(), cols, spacing, by_col, false);
+        let origins = super::newdoc::grid_origins_rc(&sizes, first.origin(), (rows, cols), spacing, layout == L::GridByColumn, rtl);
         let deltas: Vec<Vec2> = rects.iter().zip(origins).map(|(r, o)| o - r.origin()).collect();
         if move_art {
             let tops: Vec<(NodeId, Point)> = d
@@ -800,11 +868,11 @@ fn rearrange_artboards(s: &mut Session, p: &Value) -> Result<Value> {
                 .filter_map(|n| Some((n.id, n.geometric_bounds()?.center())))
                 .collect();
             for (id, c) in tops {
-                if let Some(i) = rects.iter().position(|r| r.contains(c))
-                    && deltas[i] != Vec2::ZERO
+                if let Some(&dl) = rects.iter().position(|r| r.contains(c)).and_then(|i| deltas.get(i))
+                    && dl != Vec2::ZERO
                     && let Some(n) = d.node_mut(id)
                 {
-                    n.transform(Affine::translate(deltas[i]), scale_strokes);
+                    n.transform(Affine::translate(dl), scale_strokes);
                 }
             }
         }
@@ -818,5 +886,5 @@ fn rearrange_artboards(s: &mut Session, p: &Value) -> Result<Value> {
         }
         Ok(())
     })?;
-    ok()
+    Ok(json!({ "artboards": count, "rows": rows, "columns": cols }))
 }

crates/engine/src/cmd/newdoc.rs

@@ -345,9 +345,22 @@ pub fn color_mode_id(m: ColorMode) -> &'static str {
 /// each column as wide and each row as tall as its largest artboard; `by_column` fills columns
 /// top to bottom first, `rtl` puts the first column at the right.
 pub(crate) fn grid_origins(sizes: &[(f64, f64)], origin: Point, columns: usize, spacing: f64, by_column: bool, rtl: bool) -> Vec<Point> {
-    let n = sizes.len();
-    let cols = columns.clamp(1, n.max(1));
-    let rows = n.div_ceil(cols).max(1);
+    let n = sizes.len().max(1);
+    let cols = columns.clamp(1, n);
+    grid_origins_rc(sizes, origin, (n.div_ceil(cols), cols), spacing, by_column, rtl)
+}
+
+/// [`grid_origins`] on a grid of `rows` × `cols` cells (at least enough for every artboard when
+/// filled the `by_column` way).
+pub(crate) fn grid_origins_rc(
+    sizes: &[(f64, f64)],
+    origin: Point,
+    (rows, cols): (usize, usize),
+    spacing: f64,
+    by_column: bool,
+    rtl: bool,
+) -> Vec<Point> {
+    let (rows, cols) = (rows.max(1), cols.max(1));
     // Grid cell (row, column) of artboard i.
     let cell = |i: usize| {
         let (r, c) = if by_column { (i % rows, i / rows) } else { (i / cols, i % cols) };
@@ -362,7 +375,7 @@ pub(crate) fn grid_origins(sizes: &[(f64, f64)], origin: Point, columns: usize,
         }
     }
     let offset = |spans: &[f64], k: usize| spans.iter().take(k).map(|s| s + spacing).sum::<f64>();
-    (0..n)
+    (0..sizes.len())
         .map(|i| {
             let (r, c) = cell(i);
             Point::new(origin.x + offset(&col_w, c), origin.y + offset(&row_h, r))

crates/engine/src/cmd/prefscmds.rs

@@ -187,6 +187,7 @@ pub const PREF_SPECS: &[PrefSpec] = &[
     p!("missingGlyphProtection", "Type", "Options", "Enable Missing Glyph Protection", bool),
     p!("highlightAlternateGlyphs", "Type", "Options", "Highlight Alternate Glyphs", bool),
     p!("placeholderText", "Type", "Options", "Fill New Type Objects With Placeholder Text", bool),
+    p!("fontsFolder", "Type", "Options", "Additional Fonts Folder", text),
     // Units
     p!("unitsGeneral", "Units", "", "General", choice(UNITS)),
     p!("unitsStroke", "Units", "", "Stroke", choice(UNITS)),
@@ -260,8 +261,21 @@ pub const PREF_SPECS: &[PrefSpec] = &[
         "Brightness",
         choice(&[("dark", "Dark"), ("mediumDark", "Medium Dark"), ("mediumLight", "Medium Light"), ("light", "Light")])
     ),
-    p!("canvasColor", "User Interface", "", "Canvas Color", choice(&[("matchUi", "Match User Interface Brightness"), ("white", "White")])),
+    p!(
+        "canvasColor",
+        "User Interface",
+        "",
+        "Canvas Color",
+        choice(&[
+            ("matchUi", "Match User Interface Brightness"),
+            ("white", "White"),
+            ("lightGray", "Light Gray"),
+            ("mediumGray", "Medium Gray"),
+            ("darkGray", "Dark Gray")
+        ])
+    ),
     p!("autoCollapseIconPanels", "User Interface", "", "Auto-Collapse Iconic Panels", bool),
+    p!("toolGroupLabels", "User Interface", "", "Show Tool Group Labels", bool),
     p!("openDocumentsAsTabs", "User Interface", "", "Open Documents As Tabs", bool),
     p!("largeTabs", "User Interface", "", "Large Tabs", bool),
     p!("uiScaling", "User Interface", "UI Scaling", "Scale", num(0.75, 2.0, "×")),
@@ -460,7 +474,18 @@ impl Session {
         let grid_changed = p.gridline_every != self.prefs.gridline_every || p.grid_subdivisions != self.prefs.grid_subdivisions;
         let history_changed = p.history_states != self.prefs.history_states;
         let tile_edge_changed = p.pattern_tile_edge_color != self.prefs.pattern_tile_edge_color;
+        let fonts_folder_changed = p.fonts_folder != self.prefs.fonts_folder;
         self.prefs = p;
+        if fonts_folder_changed {
+            let folder = self.prefs.fonts_folder.trim();
+            vectorcraft_text::set_user_font_dirs(if folder.is_empty() { vec![] } else { vec![folder.into()] });
+            // Once the fonts were scanned, scan again now: the folder's fonts appear (or go) in the
+            // font menus, and type in them lays out again. The first scan reads it anyway.
+            if vectorcraft_text::FontDb::global().installed_fonts_changed() {
+                // Its result only counts the faces cataloged.
+                let _ = super::fonts::rescan(self, &serde_json::Value::Null);
+            }
+        }
         vectorcraft_render::set_default_threads(u16::try_from(self.prefs.render_threads).ok());
         for st in &mut self.docs {
             if history_changed {

crates/engine/src/cmd/swatchlib.rs

@@ -276,11 +276,18 @@ pub const DOCUMENT_SWATCHES: &str = "document";
 /// [`DOCUMENT_SWATCHES`], of the active document's swatches and colour groups. `None` when there is
 /// no such library (or document).
 pub fn limit_palette(s: &Session, key: &str) -> Option<Palette> {
+    Some(Palette::new(library_colors(s, key)?))
+}
+
+/// The solid colours of library `key` (an id or name) or, for [`DOCUMENT_SWATCHES`], of the
+/// active document's swatches and colour groups. `None` when there is no such library (or
+/// document).
+pub fn library_colors(s: &Session, key: &str) -> Option<Vec<Color>> {
     let colors = |sw: &Swatch| sw.paint.color();
     if key == DOCUMENT_SWATCHES {
-        return Some(Palette::new(s.active()?.doc.swatches_iter().filter_map(colors)));
+        return Some(s.active()?.doc.swatches_iter().filter_map(colors).collect());
     }
-    Some(Palette::new(library(s, key)?.1.iter().filter_map(colors)))
+    Some(library(s, key)?.1.iter().filter_map(colors).collect())
 }
 
 /// The `limitTo` parameter's palette ([`limit_palette`]); `None` without one (or for "").

crates/engine/src/cmd/typecmd.rs

@@ -147,6 +147,8 @@ fn auto_height(t: &mut TextObject) -> bool {
     let col_w = if cols > 1 { ((b.width() - t.area.gutter.max(0.0) * (cols - 1) as f64) / cols as f64).max(1.0) } else { b.width() };
     with_size(&mut probe, col_w, tall);
     probe.area.columns = 1;
+    // Measured from the top: aligned in the tall probe the lines would sit far below.
+    probe.area.vertical_align = vectorcraft_doc::VerticalAlign::Top;
     let lay = vectorcraft_text::layout(db, &probe);
     let inset = t.area.inset.max(0.0);
     let Some(bottom) = lay.lines.iter().map(|l| l.baseline + l.descent).filter(|y| y.is_finite()).reduce(f64::max) else { return false };

crates/engine/src/lib.rs

@@ -480,6 +480,9 @@ pub struct Prefs {
     // Hyphenation
     pub hyphenation_language: String,
     pub hyphenation_exceptions: String,
+    /// Type › Options › Additional Fonts Folder: a folder (read with its subfolders) whose fonts
+    /// are listed and used as if installed (#683); empty for none.
+    pub fonts_folder: String,
     // Performance & Storage (Plug-ins & Scratch Disks)
     pub plugins_folder: String,
     pub scratch_primary: String,
@@ -488,6 +491,9 @@ pub struct Prefs {
     pub ui_brightness: String,
     pub canvas_color: String,
     pub auto_collapse_icon_panels: bool,
+    /// User Interface › Show Tool Group Labels: the toolbar's group names (Select, Shapes, Draw…);
+    /// off, a faint dash separates the groups instead (#663).
+    pub tool_group_labels: bool,
     pub open_documents_as_tabs: bool,
     pub large_tabs: bool,
     pub ui_scaling: f64,
@@ -696,12 +702,14 @@ impl Default for Prefs {
             slice_line_color: s("#ff3f3f"),
             hyphenation_language: s("English: USA"),
             hyphenation_exceptions: String::new(),
+            fonts_folder: String::new(),
             plugins_folder: String::new(),
             scratch_primary: s("Startup"),
             scratch_secondary: s("None"),
             ui_brightness: s("mediumDark"),
             canvas_color: s("matchUi"),
             auto_collapse_icon_panels: false,
+            tool_group_labels: true,
             open_documents_as_tabs: true,
             large_tabs: false,
             ui_scaling: 1.0,
@@ -1586,6 +1594,8 @@ mod tests_swatchlib;
 #[cfg(test)]
 mod tests_targeting;
 #[cfg(test)]
+mod tests_textcombos;
+#[cfg(test)]
 mod tests_textedit;
 #[cfg(test)]
 mod tests_textimport;

crates/engine/src/tests_build.rs

@@ -4,7 +4,7 @@ use std::sync::Arc;
 
 use serde_json::{Value, json};
 use vectorcraft_color::{Color, Paint};
-use vectorcraft_doc::{ImageBlob, ImageObject, Node, NodeKind};
+use vectorcraft_doc::{AppearanceItem, ImageBlob, ImageObject, LineCap, LineJoin, Node, NodeKind};
 use vectorcraft_geom::{Affine, FillRule, PathData, Rect};
 use vectorcraft_tools::{Mods, PointerEvent, PointerKind};
 
@@ -669,6 +669,82 @@ fn image_trace_make_and_expand_and_color_presets() {
     assert!(s.execute("imageTrace.make", &json!({"params": {"mode": "rainbow"}})).is_err());
 }
 
+#[test]
+fn image_trace_palettes_and_swatch_libraries() {
+    let mut s = session();
+    let quads = vectorcraft_trace::Raster::from_fn(60, 60, |x, y| match (x < 30, y < 30) {
+        (true, true) => [230, 20, 20, 255],
+        (false, true) => [20, 200, 30, 255],
+        (true, false) => [20, 30, 220, 255],
+        (false, false) => [250, 230, 10, 255],
+    });
+    add_image(&mut s, &quads, Affine::IDENTITY);
+    let fills = |s: &Session, id: &Value| -> Vec<Color> {
+        traced_paths(&node(s, NodeId(id.as_u64().unwrap()))).iter().filter_map(|n| n.appearance.fill_paint().color()).collect()
+    };
+    // Document Library: every fill is one of the document's swatch colours, as it is.
+    let r = s.execute("imageTrace.make", &json!({"preset": "6 Colors", "params": {"palette": "documentLibrary"}})).unwrap();
+    let doc = crate::cmd::swatchlib::library_colors(&s, "document").unwrap();
+    let got = fills(&s, &r["id"]);
+    assert!(!got.is_empty() && got.iter().all(|c| doc.contains(c)), "{got:?}");
+    let t = node(&s, NodeId(r["id"].as_u64().unwrap())).trace.unwrap();
+    assert_eq!((t["params"]["palette"].as_str(), t["params"]["library"].as_str()), (Some("documentLibrary"), Some("document")));
+    assert!(t["params"].get("swatches").is_none(), "looked up again at every trace");
+    // A swatch library by id: the web-safe colours.
+    let r = s
+        .execute(
+            "imageTrace.make",
+            &json!({"id": r["id"], "preset": "6 Colors", "params": {"palette": "documentLibrary", "library": "web-safe-216", "colors": 3}}),
+        )
+        .unwrap();
+    let got = fills(&s, &r["id"]);
+    assert!((1..=3).contains(&got.len()), "{got:?}");
+    assert!(got.iter().all(|c| c.to_rgba8(1.0)[..3].iter().all(|v| v % 51 == 0)), "{got:?}");
+    // Full Tone and Automatic keep the four flat colours.
+    let mut id = r["id"].clone();
+    for palette in ["fullTone", "automatic"] {
+        let r = s.execute("imageTrace.make", &json!({"id": id, "preset": "6 Colors", "params": {"palette": palette, "colorDetail": 50}})).unwrap();
+        assert_eq!(r["colors"], 4, "{palette}");
+        id = r["id"].clone();
+    }
+    let mut bad = |p: Value| s.execute("imageTrace.make", &json!({"preset": "6 Colors", "params": p})).is_err();
+    assert!(bad(json!({"palette": "documentLibrary", "library": "No Such Library"})));
+    assert!(bad(json!({"palette": "rainbow"})));
+}
+
+#[test]
+fn image_trace_create_strokes_makes_stroked_centre_lines() {
+    let mut s = session();
+    // A 3 px wide horizontal line from x = 10 to 90 at y = 50, placed at 2× from (100, 100).
+    let r =
+        vectorcraft_trace::Raster::from_fn(100, 100, |x, y| if (10..90).contains(&x) && (49..52).contains(&y) { [0, 0, 0, 255] } else { [255; 4] });
+    add_image(&mut s, &r, Affine::translate((100.0, 100.0)) * Affine::scale(2.0));
+    let res = s.execute("imageTrace.make", &json!({"params": {"ignoreWhite": true, "strokes": true, "strokeWidth": 5}})).unwrap();
+    assert_eq!(res["paths"], 1);
+    let g = NodeId(res["id"].as_u64().unwrap());
+    let paths = traced_paths(&node(&s, g));
+    let line = &paths[0];
+    assert!(line.appearance.fill_paint().color().is_none(), "not filled");
+    let st = line.appearance.items.iter().find_map(|i| if let AppearanceItem::Stroke(st) = i { Some(st) } else { None }).expect("stroked");
+    assert!((st.width - 6.0).abs() < 1.0, "3 px at 2× is about 6 pt: {}", st.width);
+    assert_eq!((st.cap, st.join), (LineCap::Round, LineJoin::Round));
+    assert_eq!(st.paint, Paint::solid(Color::rgb8(0, 0, 0)));
+    let sp = &line.path_data().unwrap().subpaths[0];
+    assert!(!sp.closed);
+    let (a, b) = (sp.anchors[0].p, sp.anchors[sp.anchors.len() - 1].p);
+    assert!((a.y - 201.0).abs() < 1.5 && (b.y - 201.0).abs() < 1.5 && (a.x - b.x).abs() > 140.0, "{a:?} … {b:?}");
+    let t = node(&s, g).trace.unwrap();
+    assert_eq!((t["params"]["strokes"].as_bool(), t["params"]["strokeWidth"].as_f64()), (Some(true), Some(5.0)));
+    // Expand keeps the stroked line.
+    s.execute("imageTrace.expand", &json!({})).unwrap();
+    assert!(node(&s, g).children().unwrap()[0].appearance.items.iter().any(|i| matches!(i, AppearanceItem::Stroke(_))));
+    // Create needs Fills or Strokes, and a stroke width.
+    s.execute("edit.undo", &json!({})).unwrap();
+    for p in [json!({"fills": false, "strokes": false}), json!({"strokes": true, "strokeWidth": 0}), json!({"strokeWidth": -3})] {
+        assert!(s.execute("imageTrace.make", &json!({"id": g.0, "params": p})).is_err(), "{p}");
+    }
+}
+
 #[test]
 fn image_trace_presets_query_and_errors() {
     let mut s = session();
@@ -705,6 +781,85 @@ fn image_trace_object_remembers_its_settings() {
     assert!(st.doc.node(id).unwrap().trace.is_none());
 }
 
+/// A black disc (r = 30 px) on light blue, 100 × 100 px, placed at 2× from (50, 50): traced in
+/// Black and White with Ignore White, the blue drops out and one disc (r = 60 pt at (150, 150))
+/// remains.
+fn disc_on_blue(s: &mut Session) -> NodeId {
+    let r = vectorcraft_trace::Raster::from_fn(100, 100, |x, y| {
+        let (dx, dy) = (x as f64 + 0.5 - 50.0, y as f64 + 0.5 - 50.0);
+        if dx * dx + dy * dy <= 900.0 { [0, 0, 0, 255] } else { [170, 210, 255, 255] }
+    });
+    add_image(s, &r, Affine::translate((50.0, 50.0)) * Affine::scale(2.0));
+    let r = s.execute("imageTrace.make", &json!({"params": {"ignoreWhite": true}})).unwrap();
+    assert_eq!(r["paths"], 1);
+    NodeId(r["id"].as_u64().unwrap())
+}
+
+/// The document rendered as the canvas draws it (`trace_views`) or as exports do.
+fn render_doc(s: &Session, trace_views: bool) -> vectorcraft_render::Rendered {
+    let opts = vectorcraft_render::RenderOptions { background: Some([255, 255, 255, 255]), trace_views, ..Default::default() };
+    vectorcraft_render::Renderer::new().render(&s.doc().unwrap().doc, 300, 300, Affine::IDENTITY, &opts)
+}
+
+#[test]
+fn image_trace_view_is_stored_kept_and_validated() {
+    let mut s = session();
+    let g = disc_on_blue(&mut s);
+    assert_eq!(node(&s, g).trace.unwrap()["view"], "tracingResult");
+    let r = s.execute("imageTrace.setView", &json!({"view": "outlinesWithSourceImage"})).unwrap();
+    assert_eq!((ids(&r), r["view"].as_str()), (vec![g], Some("outlinesWithSourceImage")));
+    assert_eq!(node(&s, g).trace_view(), vectorcraft_doc::TraceView::OutlinesWithSource);
+    // Setting the view it has already adds no undo step.
+    let steps = s.doc().unwrap().history.undo.len();
+    s.execute("imageTrace.setView", &json!({"id": g.0, "view": "outlinesWithSourceImage"})).unwrap();
+    assert_eq!(s.doc().unwrap().history.undo.len(), steps);
+    // Tracing again keeps it, unless another one is asked for; it survives save and open.
+    let g = NodeId(s.execute("imageTrace.make", &json!({"id": g.0, "params": {"ignoreWhite": true, "noise": 30}})).unwrap()["id"].as_u64().unwrap());
+    assert_eq!(node(&s, g).trace_view(), vectorcraft_doc::TraceView::OutlinesWithSource);
+    let g = NodeId(s.execute("imageTrace.make", &json!({"id": g.0, "view": "SourceImage"})).unwrap()["id"].as_u64().unwrap());
+    let back = vectorcraft_format::load(&vectorcraft_format::save(&s.doc().unwrap().doc, false)).unwrap();
+    assert_eq!(back.node(g).unwrap().trace_view(), vectorcraft_doc::TraceView::Source);
+    // Bad views and other objects are refused.
+    assert!(s.execute("imageTrace.setView", &json!({"view": "sepia"})).is_err());
+    assert!(s.execute("imageTrace.setView", &json!({})).is_err());
+    assert!(s.execute("imageTrace.make", &json!({"view": 3})).is_err());
+    let a = rect(&mut s, 0.0, 0.0, 10.0, 10.0);
+    assert!(s.execute("imageTrace.setView", &json!({"id": a.0, "view": "outlines"})).is_err());
+}
+
+#[test]
+fn image_trace_views_draw_on_screen_only_and_expand_to_the_result() {
+    let mut s = session();
+    let g = disc_on_blue(&mut s);
+    let dark = |p: [u8; 4]| p[0] < 60 && p[1] < 60 && p[2] < 60;
+    let white = |p: [u8; 4]| p[0] > 245 && p[1] > 245 && p[2] > 245;
+    let blue = |p: [u8; 4]| p[0] < 200 && p[2] > 245;
+    let (centre, beside) = ((150, 150), (70, 70));
+    let at = |img: &vectorcraft_render::Rendered, (x, y): (u32, u32)| img.pixel(x, y);
+    // The outline is a 1 px line where the disc's right side is (x = 210, anti-aliased).
+    let outlined = |img: &vectorcraft_render::Rendered| (205..=215).any(|x| img.pixel(x, 150)[0] < 128);
+    let mut expanded = None;
+    for view in vectorcraft_doc::TraceView::ALL {
+        s.execute("imageTrace.setView", &json!({"id": g.0, "view": view.id()})).unwrap();
+        let screen = render_doc(&s, true);
+        let (c, b) = (at(&screen, centre), at(&screen, beside));
+        assert_eq!(dark(c), view.shows_result() || view.shows_source(), "{view:?}: the disc's middle {c:?}");
+        assert_eq!(blue(b), view.shows_source(), "{view:?}: the image's background {b:?}");
+        assert!(view.shows_source() || white(b), "{view:?}: nothing beside the disc {b:?}");
+        if view == vectorcraft_doc::TraceView::Outlines {
+            assert!(outlined(&screen), "{view:?}: the disc's outline");
+        }
+        // Exports draw the tracing result whatever the view.
+        let export = render_doc(&s, false);
+        assert!(dark(at(&export, centre)) && white(at(&export, beside)), "{view:?}: export");
+        // Expand keeps the traced shapes, as traced, whatever the view.
+        s.execute("imageTrace.expand", &json!({"id": g.0})).unwrap();
+        let shapes: Vec<_> = node(&s, g).children().unwrap().iter().map(|c| (c.path_data().cloned(), c.appearance.clone())).collect();
+        assert_eq!(*expanded.get_or_insert_with(|| shapes.clone()), shapes, "{view:?}: expanded");
+        s.execute("edit.undo", &json!({})).unwrap();
+    }
+}
+
 /// #569: merging the regions of a rosette of unfilled ellipses (each off the centre, petals
 /// overlapping) merges every region the drags touch into one shape whose outline is only the
 /// merged area's border: no edge between merged regions stays in, as a stray line or a spur.

crates/engine/src/tests_menucmds.rs

@@ -1159,3 +1159,35 @@ fn saved_selection_names_are_trimmed_and_capped() {
     let list = s.execute("select.savedList", &json!({})).unwrap();
     assert_eq!(list[0].as_str().map(|n| n.chars().count()), Some(vectorcraft_doc::SavedSelection::MAX_NAME));
 }
+
+#[test]
+fn crop_image_trim_cuts_to_the_opaque_pixels_as_they_are() {
+    // 100 × 80 px, transparent but for a block at (20, 10)–(50, 40) px; placed at 2 pt a pixel.
+    let mut px = image::RgbaImage::new(100, 80);
+    for y in 10..40 {
+        for x in 20..50 {
+            px.put_pixel(x, y, image::Rgba([x as u8, y as u8, 7, if x == 20 { 1 } else { 255 }]));
+        }
+    }
+    let mut png = Vec::new();
+    px.write_to(&mut std::io::Cursor::new(&mut png), image::ImageFormat::Png).unwrap();
+    let mut s = Session::new();
+    s.execute("document.open", &json!({"name": "art.png", "dataBase64": vectorcraft_format::base64_encode(&png)})).unwrap();
+    s.execute("select.all", &json!({})).unwrap();
+    let img = selected(&s)[0];
+    s.execute("object.scale", &json!({"sx": 200, "origin": [0, 0]})).unwrap();
+    let r = s.execute("object.cropImage", &json!({"trim": true})).unwrap();
+    assert_eq!((r["width"].as_u64().unwrap(), r["height"].as_u64().unwrap()), (30, 30), "{r}");
+    // Placed where those pixels were: (40, 20) pt, 60 × 60 pt at 2 pt a pixel.
+    let b = bounds(&s, img);
+    assert!(close(b.x0, 40.0) && close(b.y0, 20.0) && close(b.width(), 60.0) && close(b.height(), 60.0), "{b:?}");
+    // Pixel for pixel, a barely visible (alpha 1) edge included.
+    let NodeKind::Image(im) = &node(&s, img).kind else { panic!("an image") };
+    let out = image::load_from_memory(&s.doc().unwrap().doc.images[&im.key].bytes).unwrap().to_rgba8();
+    assert_eq!(out, image::imageops::crop_imm(&px, 20, 10, 30, 30).to_image());
+    assert_eq!(r["trimmed"], true);
+    // Nothing transparent left to cut: left as it is, and not an error (scripts trim every image).
+    let r = s.execute("object.cropImage", &json!({"trim": true})).unwrap();
+    assert_eq!((r["trimmed"].as_bool(), r["width"].as_u64()), (Some(false), Some(30)), "{r}");
+    assert_eq!(bounds(&s, img), b);
+}

crates/engine/src/tests_newdoc.rs

@@ -223,3 +223,63 @@ fn rearrange_keeps_its_grid() {
     s.execute("artboard.rearrange", &json!({"columns": 2, "spacing": 5})).unwrap();
     assert_eq!(boards(&s).iter().map(|r| (r.x0, r.y0)).collect::<Vec<_>>(), [(0.0, 0.0), (105.0, 0.0), (0.0, 55.0)]);
 }
+
+/// #681: every layout and order of Rearrange All Artboards, five 100 × 50 artboards 10 pt apart
+/// with Columns (the rows of a grid by column) 2: each artboard lands in its (row, column) cell, the
+/// art on it rides along, and it all undoes in one step.
+#[test]
+fn rearrange_lays_out_by_layout_and_order() {
+    type Cells = [(u32, u32); 5];
+    let cells: [(&str, &str, Cells); 8] = [
+        ("gridByRow", "leftToRight", [(0, 0), (0, 1), (1, 0), (1, 1), (2, 0)]),
+        ("gridByRow", "rightToLeft", [(0, 1), (0, 0), (1, 1), (1, 0), (2, 1)]),
+        ("gridByColumn", "leftToRight", [(0, 0), (1, 0), (0, 1), (1, 1), (0, 2)]),
+        ("gridByColumn", "rightToLeft", [(0, 2), (1, 2), (0, 1), (1, 1), (0, 0)]),
+        ("row", "leftToRight", [(0, 0), (0, 1), (0, 2), (0, 3), (0, 4)]),
+        ("row", "rightToLeft", [(0, 4), (0, 3), (0, 2), (0, 1), (0, 0)]),
+        ("column", "leftToRight", [(0, 0), (1, 0), (2, 0), (3, 0), (4, 0)]),
+        ("column", "rightToLeft", [(0, 0), (1, 0), (2, 0), (3, 0), (4, 0)]),
+    ];
+    for (layout, order, want) in cells {
+        // One row, 20 pt apart; a 10 pt square 10 pt into each artboard.
+        let mut s = new_doc(json!({"width": 100, "height": 50, "artboards": 5}));
+        let art: Vec<u64> = boards(&s)
+            .iter()
+            .map(|r| {
+                s.execute("shape.rectangle", &json!({"x": r.x0 + 10.0, "y": r.y0 + 10.0, "width": 10, "height": 10})).unwrap()["id"].as_u64().unwrap()
+            })
+            .collect();
+        let before = boards(&s);
+        let undo = s.doc().unwrap().history.undo.len();
+        let p = json!({"layout": layout, "order": order, "columns": 2, "spacing": 10});
+        let r = s.execute("artboard.rearrange", &p).unwrap();
+        let (rows, cols) = want.iter().fold((0, 0), |(r, c), (wr, wc)| (r.max(wr + 1), c.max(wc + 1)));
+        assert_eq!(r, json!({"artboards": 5, "rows": rows, "columns": cols}), "{layout} {order}");
+        let got: Vec<(f64, f64)> = boards(&s).iter().map(|r| (r.x0, r.y0)).collect();
+        let cells: Vec<(f64, f64)> = want.iter().map(|&(r, c)| (f64::from(c) * 110.0, f64::from(r) * 60.0)).collect();
+        assert_eq!(got, cells, "{layout} {order}");
+        assert!(boards(&s).iter().all(|r| r.width() == 100.0 && r.height() == 50.0));
+        for (id, (x, y)) in art.iter().zip(&got) {
+            let b = s.doc().unwrap().doc.node(NodeId(*id)).unwrap().geometric_bounds().unwrap();
+            assert_eq!((b.x0, b.y0), (x + 10.0, y + 10.0), "{layout} {order}: the art moves with its artboard");
+        }
+        assert_eq!(s.doc().unwrap().history.undo.len(), undo + 1, "one undo step");
+        s.execute("edit.undo", &json!({})).unwrap();
+        assert_eq!(boards(&s), before);
+    }
+}
+
+/// `byColumn: true` is Grid by Column; without `moveArtwork` the art stays; bad values are errors.
+#[test]
+fn rearrange_aliases_and_rejects_bad_values() {
+    let mut s = new_doc(json!({"width": 100, "height": 50, "artboards": 3}));
+    let id = s.execute("shape.rectangle", &json!({"x": 130, "y": 10, "width": 10, "height": 10})).unwrap()["id"].as_u64().unwrap();
+    s.execute("artboard.rearrange", &json!({"byColumn": true, "columns": 2, "spacing": 0, "moveArtwork": false})).unwrap();
+    assert_eq!(boards(&s).iter().map(|r| (r.x0, r.y0)).collect::<Vec<_>>(), [(0.0, 0.0), (0.0, 50.0), (100.0, 0.0)]);
+    assert_eq!(s.doc().unwrap().doc.node(NodeId(id)).unwrap().geometric_bounds().unwrap().x0, 130.0, "the art stays");
+    let before = boards(&s);
+    for p in [json!({"layout": "diagonal"}), json!({"order": "upward"}), json!({"layout": 3}), json!({"order": true})] {
+        assert!(s.execute("artboard.rearrange", &p).is_err(), "{p}");
+    }
+    assert_eq!(boards(&s), before, "nothing moved");
+}

crates/engine/src/tests_prefs.rs

@@ -282,6 +282,33 @@ fn snap_to_point_lands_a_dragged_selection_on_anchors() {
     assert_eq!(drag(&mut s, ViewInfo { snap_to_point: false, ..v }), (276.5, 76.0), "View › Snap to Point off");
 }
 
+/// Smart Guides › Spacing Guides (#394): a square dragged 21 pt to the right of a row of two
+/// squares 20 pt apart lands 20 pt from it, with the gaps marked; off, it stays at 21.
+#[test]
+fn spacing_guides_space_a_dragged_square_like_its_row() {
+    use vectorcraft_tools::PointerKind::{Down, Drag, Up};
+    let mut s = new_doc();
+    square(&mut s, 20.0, 300.0);
+    square(&mut s, 90.0, 300.0);
+    let m = square(&mut s, 200.0, 305.0);
+    let v = ViewInfo::default();
+    s.select_tool("selection", v).unwrap();
+    // `m` grabbed by its centre and dragged so its left edge is 21 pt from the second square.
+    let drag = |s: &mut Session| {
+        gesture(s, v, &[(Down, 225.0, 330.0), (Drag, 200.0, 330.0), (Drag, 186.0, 330.0)]);
+        let marks = s.overlays(v).iter().filter(|o| matches!(o, vectorcraft_tools::Overlay::Line { a, b, .. } if a.y == b.y)).count();
+        gesture(s, v, &[(Up, 186.0, 330.0)]);
+        let at = top_left(s, m).0;
+        s.execute("edit.undo", &json!({})).unwrap();
+        (at, marks)
+    };
+    let (at, marks) = drag(&mut s);
+    assert_eq!(at, 160.0, "20 pt from it");
+    assert!(marks >= 2, "both gaps marked");
+    set_pref(&mut s, "spacingGuides", json!(false));
+    assert_eq!(drag(&mut s), (161.0, 0), "off: where it was dragged");
+}
+
 /// Preferences › Smart Guides (#394): Color, Alignment Guides, Anchor/Path Labels, Measurement
 /// Labels, Transform Tools and Snapping Tolerance change what the Selection tool shows while a
 /// square is dragged into line with another, and how far the pull reaches; a hidden guide still

crates/engine/src/tests_textcombos.rs

@@ -0,0 +1,310 @@
+//! The text engine's newer features combined through commands: Auto Size and Shrink Text to Fit
+//! with inline graphics, per-paragraph attributes, the paragraph composer and vertical
+//! alignment; editing and undo across them; and a save round trip with all of them on.
+//! (`vectorcraft_text`'s `tests_combos` covers the layout side.)
+
+use serde_json::{Value, json};
+use vectorcraft_doc::text::INLINE_CHAR;
+use vectorcraft_doc::{AreaFit, Composer, Justify, NodeKind, TextKind, TextObject, VerticalAlign};
+use vectorcraft_geom::Rect;
+
+use super::*;
+
+const STORY: &str = "The quick brown fox jumps over the lazy dog. A second sentence follows the first one here. Then a third one ends it.";
+
+fn session() -> Session {
+    let mut s = Session::new();
+    s.execute("file.new", &json!({"width": 800, "height": 600})).unwrap();
+    s
+}
+
+/// A symbol `name`: a circle `d` points across, its instance deleted.
+fn circle_symbol(s: &mut Session, name: &str, d: f64) {
+    s.execute("shape.ellipse", &json!({"x": 600, "y": 500, "width": d, "height": d})).unwrap();
+    s.execute("symbol.new", &json!({"name": name})).unwrap();
+    s.execute("edit.clear", &json!({})).unwrap();
+}
+
+/// Area type at (40, 40), `w` × `h`, size 12, with `extra` area options; selected.
+fn area(s: &mut Session, w: f64, h: f64, text: &str, extra: Value) -> NodeId {
+    let mut a = json!({"width": w, "height": h});
+    if let (Some(a), Some(e)) = (a.as_object_mut(), extra.as_object()) {
+        a.extend(e.clone());
+    }
+    let id = NodeId(s.execute("text.create", &json!({"x": 40, "y": 40, "size": 12, "area": a, "text": text})).unwrap()["id"].as_u64().unwrap());
+    s.execute("select.set", &json!({"ids": [id.0]})).unwrap();
+    id
+}
+
+fn text(s: &Session, id: NodeId) -> TextObject {
+    match &s.doc().unwrap().doc.node(id).unwrap().kind {
+        NodeKind::Text(t) => (**t).clone(),
+        k => panic!("not text: {k:?}"),
+    }
+}
+
+fn frame(s: &Session, id: NodeId) -> Rect {
+    match text(s, id).kind {
+        TextKind::Area { frame } => frame.bounds().unwrap(),
+        k => panic!("not area type: {k:?}"),
+    }
+}
+
+fn lay(t: &TextObject) -> vectorcraft_text::TextLayout {
+    vectorcraft_text::layout(vectorcraft_text::FontDb::global(), t)
+}
+
+/// Auto Size's frame is tight: the text fits, and a point less overflows.
+fn assert_tight(s: &Session, id: NodeId, what: &str) {
+    let t = text(s, id);
+    assert!(!lay(&t).overflow, "{what}: the frame holds the text");
+    let b = frame(s, id);
+    let mut less = t.clone();
+    less.area.fit = AreaFit::None;
+    less.kind = TextKind::Area {
+        frame: vectorcraft_geom::PathData::from_bezpath(&vectorcraft_geom::Shape::to_path(&Rect::new(b.x0, b.y0, b.x1, b.y1 - 1.0), 0.1)),
+    };
+    assert!(lay(&less).overflow, "{what}: a point less overflows ({b:?})");
+}
+
+fn undo(s: &mut Session) {
+    s.execute("edit.undo", &json!({})).unwrap();
+}
+
+fn redo(s: &mut Session) {
+    s.execute("edit.redo", &json!({})).unwrap();
+}
+
+fn query(s: &mut Session) -> Value {
+    s.execute("text.areaOptions", &json!({})).unwrap()
+}
+
+#[test]
+fn auto_height_x_inline_graphics() {
+    let mut s = session();
+    circle_symbol(&mut s, "Tap", 10.0);
+    let id = area(&mut s, 200.0, 300.0, "Tap: add one mana.", json!({"fit": "autoHeight"}));
+    let one = frame(&s, id);
+    assert_tight(&s, id, "one line");
+    // Art taller than the line makes the line, and so the frame, taller: in the same undo step.
+    let n = s.doc().unwrap().history.undo.len();
+    s.execute("text.insertInline", &json!({"id": id.0, "at": 0, "symbol": "Tap", "scale": 3})).unwrap();
+    assert_eq!(s.doc().unwrap().history.undo.len(), n + 1);
+    let tall = frame(&s, id);
+    assert!(tall.height() > one.height() + 5.0, "{one:?} → {tall:?}");
+    assert_tight(&s, id, "tall art");
+    // Enough art to wrap: another line.
+    for _ in 0..12 {
+        s.execute("text.insertInline", &json!({"id": id.0, "at": 0, "symbol": "Tap", "scale": 1})).unwrap();
+    }
+    assert!(lay(&text(&s, id)).lines.len() > 1);
+    assert_tight(&s, id, "wrapped art");
+    // Deleting the art shrinks it back; undo restores each step exactly.
+    let wrapped = frame(&s, id);
+    let all = text(&s, id).plain_text().rfind(INLINE_CHAR).unwrap() + INLINE_CHAR.len_utf8();
+    s.execute("text.editRange", &json!({"id": id.0, "start": 0, "end": all})).unwrap();
+    assert_eq!(text(&s, id).plain_text(), "Tap: add one mana.");
+    assert_eq!(frame(&s, id), one);
+    undo(&mut s);
+    assert_eq!(frame(&s, id), wrapped);
+    for _ in 0..13 {
+        undo(&mut s);
+    }
+    assert_eq!(frame(&s, id), one);
+    redo(&mut s);
+    assert_eq!(frame(&s, id), tall);
+}
+
+#[test]
+fn auto_height_x_paragraph_attrs() {
+    let mut s = session();
+    let id = area(&mut s, 200.0, 300.0, "One\nTwo", json!({"fit": "autoHeight"}));
+    let h0 = frame(&s, id).height();
+    // Space before on the second paragraph only: the frame grows by exactly that.
+    s.execute("text.setFormat", &json!({"ids": [id.0], "spaceBefore": 30, "start": 4, "end": 4})).unwrap();
+    let t = text(&s, id);
+    assert_eq!((t.para_at(0).space_before, t.para_at(1).space_before), (0.0, 30.0));
+    let h1 = frame(&s, id).height();
+    assert!((h1 - h0 - 30.0).abs() < 1e-6, "{h0} → {h1}");
+    assert_tight(&s, id, "space before");
+    // Return in the spaced paragraph: the new one inherits the spacing, the frame follows.
+    s.execute("text.editRange", &json!({"id": id.0, "start": 7, "end": 7, "insert": "\nThree"})).unwrap();
+    let t = text(&s, id);
+    assert_eq!(t.paragraph_styles().iter().map(|p| p.space_before).collect::<Vec<_>>(), [0.0, 30.0, 30.0]);
+    assert!(frame(&s, id).height() > h1 + 30.0);
+    assert_tight(&s, id, "three paragraphs");
+    // Merging paragraphs: the first one's attributes win, the frame shrinks.
+    s.execute("text.editRange", &json!({"id": id.0, "start": 3, "end": 4})).unwrap();
+    let t = text(&s, id);
+    assert_eq!(t.paragraph_styles().iter().map(|p| p.space_before).collect::<Vec<_>>(), [0.0, 30.0]);
+    assert_tight(&s, id, "merged");
+    undo(&mut s);
+    undo(&mut s);
+    assert!((frame(&s, id).height() - h1).abs() < 1e-9);
+    undo(&mut s);
+    assert!((frame(&s, id).height() - h0).abs() < 1e-9);
+    assert!(text(&s, id).paras.is_empty(), "back to one style for all");
+}
+
+#[test]
+fn auto_height_x_composer() {
+    // Switching the composer of one paragraph rebreaks it; Auto Size follows either way.
+    let mut s = session();
+    let story = format!("{STORY} {STORY}\n{STORY}");
+    let id = area(&mut s, 130.0, 100.0, &story, json!({"fit": "autoHeight"}));
+    assert_tight(&s, id, "every-line");
+    for composer in ["singleLine", "everyLine", "singleLine"] {
+        s.execute("text.setFormat", &json!({"ids": [id.0], "composer": composer, "start": 0, "end": 0})).unwrap();
+        let t = text(&s, id);
+        assert_eq!(t.para_at(1).composer, Composer::EveryLine, "the second paragraph keeps its own");
+        assert_tight(&s, id, composer);
+    }
+    s.execute("text.setFormat", &json!({"ids": [id.0], "composer": "singleLine"})).unwrap();
+    s.execute("text.setStyle", &json!({"id": id.0, "justify": "justifyAll"})).unwrap();
+    assert!(text(&s, id).paragraph_styles().iter().all(|p| p.composer == Composer::SingleLine && p.justify == Justify::JustifyAll));
+    assert_tight(&s, id, "justified");
+}
+
+#[test]
+fn auto_height_x_vertical_align() {
+    // An Auto Size frame has no space to spare: every alignment sets the lines as Top does, and
+    // the frame is as tall as with Top.
+    let mut s = session();
+    let id = area(&mut s, 160.0, 100.0, STORY, json!({"fit": "autoHeight"}));
+    let top_frame = frame(&s, id);
+    let top = lay(&text(&s, id));
+    for a in ["center", "bottom", "justify"] {
+        s.execute("text.areaOptions", &json!({"verticalAlign": a})).unwrap();
+        assert_eq!(frame(&s, id), top_frame, "{a}");
+        let l = lay(&text(&s, id));
+        for (li, l0) in l.lines.iter().zip(&top.lines) {
+            assert!((li.baseline - l0.baseline).abs() < 1e-6, "{a}: {} vs {}", li.baseline, l0.baseline);
+        }
+        assert_tight(&s, id, a);
+    }
+    // Editing with the alignment on keeps the frame tight.
+    s.execute("text.editRange", &json!({"id": id.0, "start": 0, "end": 0, "insert": format!("{STORY} ")})).unwrap();
+    assert_eq!(text(&s, id).area.vertical_align, VerticalAlign::Justify);
+    assert_tight(&s, id, "longer, justified");
+}
+
+#[test]
+fn shrink_text_x_inline_graphics_and_paragraphs() {
+    let mut s = session();
+    circle_symbol(&mut s, "Dot", 8.0);
+    let id = area(&mut s, 160.0, 60.0, "Short rules.\nFlavor.", json!({"fit": "shrinkText", "fitMinPercent": 20}));
+    assert_eq!(query(&mut s)["fitScale"], 1.0);
+    // Inline art and per-paragraph spacing push it over; shrinking makes it fit.
+    s.execute("text.setFormat", &json!({"ids": [id.0], "spaceBefore": 12, "start": 13, "end": 13})).unwrap();
+    for i in 0..10 {
+        s.execute("text.insertInline", &json!({"id": id.0, "at": 0, "symbol": "Dot", "scale": 1.0 + i as f64 * 0.2})).unwrap();
+        s.execute("text.editRange", &json!({"id": id.0, "start": 0, "end": 0, "insert": "Add "})).unwrap();
+    }
+    let q = query(&mut s);
+    assert_eq!(q["overflow"], false, "{q}");
+    let f = q["fitScale"].as_f64().unwrap();
+    assert!((0.2..1.0).contains(&f), "{f}");
+    let t = text(&s, id);
+    assert_eq!(t.paragraph_count(), 2);
+    assert_eq!(t.para_at(1).space_before, 12.0, "inserting in the first paragraph keeps the second's attributes");
+    assert_eq!(t.runs[0].style.size, 12.0, "the stored size stays");
+    let l = lay(&t);
+    assert_eq!(l.inlines.len(), 10);
+    assert!(l.inlines.iter().all(|i| i.bounds.height() < 12.0 * 2.8 * f + 1e-6));
+    // Undo walks the fit back up.
+    for _ in 0..20 {
+        undo(&mut s);
+    }
+    assert_eq!(query(&mut s)["fitScale"], 1.0);
+}
+
+#[test]
+fn paragraph_attrs_x_inline_editing() {
+    // An inline graphic opening a paragraph belongs to it: inserting it keeps the paragraph's
+    // attributes, deleting it with the paragraph break merges into the paragraph before.
+    let mut s = session();
+    circle_symbol(&mut s, "Tap", 10.0);
+    let id = area(&mut s, 300.0, 200.0, "Rules\nFlavor", json!({}));
+    s.execute("text.setStyle", &json!({"id": id.0, "justify": "center", "start": 6, "end": 6})).unwrap();
+    s.execute("text.setFormat", &json!({"ids": [id.0], "composer": "singleLine", "start": 6, "end": 6})).unwrap();
+    s.execute("text.insertInline", &json!({"id": id.0, "at": 6, "symbol": "Tap"})).unwrap();
+    let t = text(&s, id);
+    assert_eq!(t.plain_text(), format!("Rules\n{INLINE_CHAR}Flavor"));
+    assert_eq!((t.para_at(0).justify, t.para_at(1).justify), (Justify::Auto, Justify::Center));
+    assert_eq!(t.para_at(1).composer, Composer::SingleLine);
+    // The art's line is centred.
+    let l = lay(&t);
+    let g = &l.glyphs[l.inlines[0].glyph];
+    let line = &l.lines[g.line];
+    assert!(((line.x0 + line.x1) * 0.5 - 150.0).abs() < 1e-6, "centred in the 300 pt frame: {line:?}");
+    assert!((l.inlines[0].bounds.x0 - g.origin.x).abs() < 1e-6);
+    // Return just before the art: the new paragraph (holding the art) continues the centred one.
+    s.execute("text.editRange", &json!({"id": id.0, "start": 6, "end": 6, "insert": "Text\n"})).unwrap();
+    let t = text(&s, id);
+    assert_eq!(t.paragraph_styles().iter().map(|p| p.justify).collect::<Vec<_>>(), [Justify::Auto, Justify::Center, Justify::Center]);
+    undo(&mut s);
+    // Delete the break and the art together: one paragraph, the first one's attributes.
+    let end = 6 + INLINE_CHAR.len_utf8();
+    s.execute("text.editRange", &json!({"id": id.0, "start": 5, "end": end})).unwrap();
+    let t = text(&s, id);
+    assert_eq!(t.plain_text(), "RulesFlavor");
+    assert!(t.paras.is_empty() && t.para.justify == Justify::Auto && t.para.composer == Composer::EveryLine);
+    assert!(t.runs.iter().all(|r| r.inline.is_none()));
+    undo(&mut s);
+    let t = text(&s, id);
+    assert_eq!(t.plain_text(), format!("Rules\n{INLINE_CHAR}Flavor"));
+    assert_eq!(t.para_at(1).justify, Justify::Center);
+    assert_eq!(t.runs.iter().filter(|r| r.inline.is_some()).count(), 1);
+}
+
+#[test]
+fn vertical_align_x_inline_graphics_in_the_document() {
+    // The art the renderer draws (the layout's inline placements) moves with centred lines.
+    let mut s = session();
+    circle_symbol(&mut s, "Tap", 10.0);
+    let id = area(&mut s, 300.0, 200.0, "Add one mana.", json!({}));
+    s.execute("text.insertInline", &json!({"id": id.0, "at": 0, "symbol": "Tap"})).unwrap();
+    let top = lay(&text(&s, id));
+    s.execute("text.areaOptions", &json!({"verticalAlign": "center"})).unwrap();
+    let l = lay(&text(&s, id));
+    let d = l.lines[0].baseline - top.lines[0].baseline;
+    assert!(d > 50.0, "{d}");
+    assert!((l.inlines[0].bounds.y0 - top.inlines[0].bounds.y0 - d).abs() < 1e-6, "{:?} vs {:?}", l.inlines[0].bounds, top.inlines[0].bounds);
+    // The cached bounds (hit testing, selection) include the moved art.
+    let cached = text(&s, id).cached_bounds.unwrap();
+    assert!(cached.contains(l.inlines[0].bounds.center()), "{cached:?}");
+}
+
+#[test]
+fn every_feature_saves_and_reopens() {
+    let mut s = session();
+    circle_symbol(&mut s, "Tap", 10.0);
+    let id = area(
+        &mut s,
+        220.0,
+        70.0,
+        &format!(": Add one mana of any color. {STORY}\n{STORY}"),
+        json!({"verticalAlign": "center", "fit": "shrinkText", "fitMinPercent": 30}),
+    );
+    s.execute("text.insertInline", &json!({"id": id.0, "at": 0, "symbol": "Tap", "scale": 0.8, "shift": 0.5})).unwrap();
+    let flavor = text(&s, id).plain_text().find('\n').unwrap() + 1;
+    s.execute("text.setFormat", &json!({"ids": [id.0], "spaceBefore": 8, "composer": "singleLine", "start": flavor, "end": flavor})).unwrap();
+    s.execute("text.setStyle", &json!({"id": id.0, "justify": "justifyAll", "start": flavor, "end": flavor})).unwrap();
+    s.execute("text.setStyle", &json!({"id": id.0, "tracking": 20})).unwrap();
+    let t = text(&s, id);
+    let l = lay(&t);
+    assert!(!l.overflow && l.fit_scale < 1.0, "{}", l.fit_scale);
+    assert_eq!(l.inlines.len(), 1);
+    let doc = s.doc().unwrap().doc.clone();
+    let back = vectorcraft_format::load(&vectorcraft_format::save(&doc, false)).unwrap();
+    let NodeKind::Text(t2) = &back.node(id).unwrap().kind else { panic!("not text") };
+    let mut t2 = (**t2).clone();
+    // Resolved art bounds and layout caches aren't saved: resolve them as opening does.
+    back.resolve_text_inline(&mut t2);
+    assert_eq!(t2.runs, t.runs);
+    assert_eq!(t2.paragraph_styles(), t.paragraph_styles());
+    assert_eq!(t2.area, t.area);
+    let l2 = lay(&t2);
+    assert_eq!((l2.fit_scale, l2.lines.len()), (l.fit_scale, l.lines.len()));
+    assert_eq!(l2.inlines.iter().map(|i| i.bounds).collect::<Vec<_>>(), l.inlines.iter().map(|i| i.bounds).collect::<Vec<_>>());
+}

crates/engine/src/tests_xform.rs

@@ -247,10 +247,13 @@ fn artboard_tool_moves_with_art_creates_and_deletes() {
     assert_eq!(s.doc().unwrap().doc.artboards.len(), 2);
     assert_eq!(s.tool_options()["active"], 1);
     assert_eq!(s.doc().unwrap().doc.artboards[1].rect, Rect::new(1000.0, 0.0, 1200.0, 100.0));
-    // Delete it.
+    // Delete it: the tool takes the key ahead of the Clear shortcut (the UI only hands Delete to a
+    // tool that claims it).
+    assert!(s.tool_claims_key(ToolKey::Delete, ViewInfo::default()));
     s.tool_key(ToolKey::Delete, Mods::default(), ViewInfo::default()).unwrap();
     assert_eq!(s.doc().unwrap().doc.artboards.len(), 1);
-    // The last artboard can't be deleted.
+    // The last artboard can't be deleted, so Delete stays the shortcut's.
+    assert!(!s.tool_claims_key(ToolKey::Delete, ViewInfo::default()));
     s.tool_key(ToolKey::Delete, Mods::default(), ViewInfo::default()).unwrap();
     assert_eq!(s.doc().unwrap().doc.artboards.len(), 1);
 }

crates/engine/src/tooling.rs

@@ -223,6 +223,7 @@ impl Session {
             anchor_path_labels: self.prefs.anchor_path_labels,
             measurement_labels: self.prefs.measurement_labels,
             transform_tools_guides: self.prefs.transform_tools_guides,
+            spacing_guides: self.prefs.spacing_guides,
             snapping_tolerance: self.prefs.snapping_tolerance,
             construction_angles: if self.prefs.construction_guides {
                 vectorcraft_tools::guides::construction_angles(&self.prefs.construction_angles)

crates/engine/tests/command_sweep.rs

@@ -98,13 +98,19 @@ fn known_bug(id: &str, p: &Value) -> bool {
     KNOWN_BUGS.iter().any(|(c, k)| *c == id && p.get(*k).is_some())
 }
 
-/// Regression: huge column counts used to panic with `capacity overflow`.
+/// Regression: huge column counts used to panic with `capacity overflow`; in every layout and
+/// order (#681), with huge and negative spacing too.
 #[test]
 fn artboard_rearrange_huge_columns() {
     for fx in Fixture::ALL {
-        for cols in [json!(u64::MAX), json!(1e308)] {
-            let p = json!({ "columns": cols });
-            assert_eq!(probe(fx, "artboard.rearrange", &p), None);
+        for layout in ["gridByRow", "gridByColumn", "row", "column"] {
+            for order in ["leftToRight", "rightToLeft"] {
+                for (cols, spacing) in [(json!(u64::MAX), json!(1e308)), (json!(1e308), json!(-1e308)), (json!(0), json!(0)), (json!(-5), json!(20))]
+                {
+                    let p = json!({ "layout": layout, "order": order, "columns": cols, "spacing": spacing });
+                    assert_eq!(probe(fx, "artboard.rearrange", &p), None);
+                }
+            }
         }
     }
 }

crates/mcp/src/prompts.rs

@@ -295,10 +295,15 @@ with the {effect} effect.
 Method:
 1. open_file the image: it becomes a document of its own pixel size.
 2. imageTrace.make with the preset name, adjusting `params` — mode blackAndWhite, grayscale or
-   color, then threshold, colors, paths, corners, noise, method abutting or overlapping,
-   ignoreWhite, snapCurvesToLines. Run imageTrace.presets to see every preset with its numbers.
+   color (palette limited, fullTone for photos, automatic, or documentLibrary to trace with
+   the document's swatches or a swatch `library`), then threshold, colors (colorDetail for
+   fullTone and automatic), paths, corners, noise, method abutting or overlapping,
+   ignoreWhite, snapCurvesToLines; for line art, strokes: true (with strokeWidth, the widest
+   line in pixels) traces lines as stroked centre lines instead of filled outlines. Run
+   imageTrace.presets to see every preset with its numbers.
    Lower paths and higher corners give the clean, logo-like result; high fidelity needs paths
-   near 90.
+   near 90. imageTrace.setView {view: \"outlinesWithSourceImage\"} draws the traced outlines
+   over the image on screen to compare them (screenshots show it; exports keep the result).
 3. apply_effect {effect} on the traced shapes. Call apply_effect with no `effect` for the
    catalogue and each effect's parameters.
 4. set_paint over the traced shapes to give the artwork its own colours.

crates/pdf/src/import.rs

@@ -592,6 +592,8 @@ struct Builder<'p> {
     image_keys: HashMap<u128, (String, u32, u32)>,
     /// The images kept with their CMYK samples ([`crate::import_image`]).
     cmyk_keys: HashSet<u128>,
+    /// Mask keys of CMYK images whose mask turned out to hide nothing.
+    opaque: HashSet<u128>,
     warnings: Vec<String>,
     /// Fonts by cache key → base font name (from [`scan_page`]).
     fonts: HashMap<u128, String>,
@@ -743,6 +745,7 @@ impl<'p> Builder<'p> {
             images: HashMap::new(),
             image_keys: HashMap::new(),
             cmyk_keys: HashSet::new(),
+            opaque: HashSet::new(),
             warnings: vec![],
             fonts: HashMap::new(),
             font_names: HashMap::new(),
@@ -1146,6 +1149,40 @@ impl<'p> Builder<'p> {
     }
 
     fn add_image(&mut self, key: u128, make: impl FnOnce() -> Option<(ImageBlob, u32, u32)>, xf: Affine) {
+        self.add_image_masked(key, make, xf, None);
+    }
+
+    /// An image's alpha (its soft mask, stencil mask or colour key, at its own resolution) as a
+    /// greyscale image over the image's `w` × `h` pixels (`transform`): its opacity mask. `None`
+    /// when it masks nothing.
+    fn alpha_mask(&mut self, key: u128, r: &hayro_interpret::RasterImage<'_>, w: u32, h: u32, transform: Affine) -> Option<OpacityMask> {
+        let mkey = key ^ 0x5_3a5c;
+        if self.opaque.contains(&mkey) {
+            return None;
+        }
+        let (k, mw, mh) = if let Some(v) = self.image_keys.get(&mkey).cloned() {
+            v
+        } else {
+            let mut alpha = None;
+            r.with_rgba(|_, a| alpha = a, None);
+            let Some(a) = alpha.filter(|a| a.data.iter().any(|v| *v < 255)) else {
+                self.opaque.insert(mkey);
+                return None;
+            };
+            let mut png = Vec::new();
+            image::GrayImage::from_raw(a.width, a.height, a.data)?.write_to(&mut std::io::Cursor::new(&mut png), image::ImageFormat::Png).ok()?;
+            let blob = ImageBlob::new("image/png", png);
+            let k = blob.content_key();
+            self.images.insert(k.clone(), blob);
+            self.image_keys.insert(mkey, (k.clone(), a.width, a.height));
+            (k, a.width, a.height)
+        };
+        let xf = transform * Affine::scale_non_uniform(f64::from(w) / f64::from(mw.max(1)), f64::from(h) / f64::from(mh.max(1)));
+        let art = Node::new(self.id(), NodeKind::Image(ImageObject { key: k, width: mw, height: mh, xf, link: None, placement: Default::default() }));
+        Some(OpacityMask::new(art, true))
+    }
+
+    fn add_image_masked(&mut self, key: u128, make: impl FnOnce() -> Option<(ImageBlob, u32, u32)>, xf: Affine, mask: Option<OpacityMask>) {
         let (k, w, h) = if let Some(v) = self.image_keys.get(&key).cloned() {
             v
         } else {
@@ -1160,7 +1197,9 @@ impl<'p> Builder<'p> {
             (k, w, h)
         };
         let id = self.id();
-        self.push_node(Node::new(id, NodeKind::Image(ImageObject { key: k, width: w, height: h, xf, link: None, placement: Default::default() })));
+        let mut n = Node::new(id, NodeKind::Image(ImageObject { key: k, width: w, height: h, xf, link: None, placement: Default::default() }));
+        n.mask = mask.map(Box::new);
+        self.push_node(n);
     }
 
     /// Mesh shadings filling `region` (document space): gradient meshes, clipped to the region
@@ -1542,7 +1581,10 @@ impl<'a> Device<'a> for Builder<'_> {
                 };
                 if known || cmyk.is_some() {
                     self.cmyk_keys.insert(key);
-                    return self.add_image(key, || cmyk.map(|blob| (blob, w, h)), transform);
+                    // Its mask (read by the interpreter, whatever its kind) becomes an opacity
+                    // mask, so the inks stay as they are.
+                    let mask = if crate::import_image::has_mask(st) { self.alpha_mask(key, &r, w, h, transform) } else { None };
+                    return self.add_image_masked(key, || cmyk.map(|blob| (blob, w, h)), transform, mask);
                 }
                 // JPEG passthrough for plain DeviceRGB/DeviceGray DCT images.
                 let dict = st.dict();

crates/pdf/src/import_image.rs

@@ -2,7 +2,9 @@
 //! four components. A JPEG whose Decode array inverts its samples (Adobe's CMYK JPEGs, the
 //! convention JPEG readers and the PDF writer take a CMYK JPEG to follow) is kept as it is; any
 //! other is decoded, its Decode array applied, and stored as a CMYK TIFF
-//! ([`ImageBlob::cmyk_tiff`]). Every other image is read as RGB by the interpreter.
+//! ([`ImageBlob::cmyk_tiff`]). A mask (`/SMask`, `/Mask`) doesn't change that: the importer
+//! carries it as the image's opacity mask ([`has_mask`]). Every other image is read as RGB by the
+//! interpreter.
 
 use hayro_syntax::Filter;
 use hayro_syntax::object::stream::ImageDecodeParams;
@@ -11,7 +13,6 @@ use vectorcraft_doc::ImageBlob;
 use vectorcraft_doc::cmyk::{Inks, MAX_CMYK_PIXELS, jpeg_components};
 
 /// A CMYK image read as RGB: why.
-pub(crate) const MASKED: &str = "CMYK images with a mask were imported in RGB";
 pub(crate) const UNREAD: &str = "CMYK images whose samples couldn't be read in CMYK were imported in RGB";
 
 /// The Decode array of a JPEG kept as it is.
@@ -57,9 +58,6 @@ pub(crate) fn cmyk(st: &Stream<'_>, width: u32, height: u32) -> Result<Option<Im
     if !cmyk_space(d) {
         return Ok(None);
     }
-    if d.contains_key(b"SMask") || d.contains_key(b"Mask") {
-        return Err(MASKED);
-    }
     let ranges = decode_ranges(d);
     let filters = st.filters();
     if ranges == INVERTED && matches!(filters.as_slice(), [Filter::DctDecode]) {
@@ -91,3 +89,9 @@ pub(crate) fn cmyk(st: &Stream<'_>, width: u32, height: u32) -> Result<Option<Im
         .collect();
     Inks::new(width, height, inks).and_then(|i| ImageBlob::cmyk_tiff(&i)).map(Some).ok_or(UNREAD)
 }
+
+/// Does the image carry its own transparency (a soft mask, a stencil mask or a colour key)?
+pub(crate) fn has_mask(st: &Stream<'_>) -> bool {
+    let d = st.dict();
+    d.contains_key(b"SMask") || d.contains_key(b"Mask") || d.get::<u8>(b"SMaskInData").is_some_and(|v| v != 0)
+}

crates/pdf/src/output.rs

@@ -375,6 +375,11 @@ impl Dest {
                 };
                 Color::Cmyk { c, m, y, k }
             }
+            // CMYK straight into the destination RGB (the destination shares the source's CMYK).
+            (_, Color::Cmyk { c, m, y, k }) => {
+                let [r, g, b] = self.cms.cmyk_to_rgb([*c, *m, *y, *k], intent);
+                Color::Rgb { r, g, b }
+            }
             _ => {
                 let [r, g, b] = self.cms.srgb_to_rgb(source.display_rgb(c));
                 Color::Rgb { r, g, b }

crates/pdf/src/tests_cmykimages.rs

@@ -212,19 +212,96 @@ fn other_cmyk_images_keep_their_ink_amounts() {
 }
 
 #[test]
-fn cmyk_images_with_a_mask_or_odd_samples_open_in_rgb_with_a_warning() {
-    let inks = flat([0, 102, 255, 0], 4);
-    let mask = stream("/Type /XObject /Subtype /Image /Width 2 /Height 2 /ColorSpace /DeviceGray /BitsPerComponent 8", &[255, 128, 255, 128]);
-    let source = pdf_with_images(&[(cmyk_dict(2, 2, "/SMask 6 0 R /Filter /FlateDecode"), crate::output::deflate(&inks).unwrap())], &[mask]);
-    let r = import_with_report(&source, &ImportOptions::default()).unwrap();
-    assert_eq!(blobs(&r.document)[0].mime, "image/png");
-    assert!(r.warnings.iter().any(|w| w == crate::import_image::MASKED), "{:?}", r.warnings);
+fn cmyk_images_with_odd_samples_open_in_rgb_with_a_warning() {
     let four_bits = cmyk_dict(2, 2, "").replace("/BitsPerComponent 8", "/BitsPerComponent 4");
     let r = import_with_report(&pdf_with_images(&[(four_bits, vec![0x0F; 8])], &[]), &ImportOptions::default()).unwrap();
     assert_eq!(blobs(&r.document)[0].mime, "image/png");
     assert!(r.warnings.iter().any(|w| w == crate::import_image::UNREAD), "{:?}", r.warnings);
 }
 
+/// An opacity mask's image: its blob and pixel size.
+type MaskImage<'d> = (&'d ImageBlob, u32, u32);
+
+/// The image nodes on the first layer: each one's blob and its opacity mask's image, if it has one.
+fn masked(d: &Document) -> Vec<(&ImageBlob, Option<MaskImage<'_>>)> {
+    let NodeKind::Layer { children, .. } = &d.layers[0].kind else { panic!() };
+    children
+        .iter()
+        .filter_map(|n| {
+            let NodeKind::Image(im) = &n.kind else { return None };
+            let mask = n.mask.as_ref().map(|m| match &m.art.kind {
+                NodeKind::Image(a) => (&d.images[&a.key], a.width, a.height),
+                other => panic!("mask art is an image: {other:?}"),
+            });
+            Some((&d.images[&im.key], mask))
+        })
+        .collect()
+}
+
+#[test]
+fn masked_cmyk_images_keep_their_inks_and_carry_the_mask_as_an_opacity_mask() {
+    let inks = flat([0, 102, 255, 0], 4);
+    let z = |data: &[u8]| crate::output::deflate(data).unwrap();
+    // Object 6 (the first after the two images): a soft mask; image 2 a colour key masking its
+    // first two pixels.
+    let smask = stream("/Type /XObject /Subtype /Image /Width 2 /Height 2 /ColorSpace /DeviceGray /BitsPerComponent 8", &[255, 128, 255, 128]);
+    let keyed: Vec<u8> = [[10, 20, 30, 40], [10, 20, 30, 40], [0, 102, 255, 0], [0, 102, 255, 0]].concat();
+    let images = [
+        (cmyk_dict(2, 2, "/SMask 7 0 R /Filter /FlateDecode"), z(&inks)),
+        (cmyk_dict(2, 2, "/Mask [10 10 20 20 30 30 40 40] /Filter /FlateDecode"), z(&keyed)),
+    ];
+    let source = pdf_with_images(&images, &[smask]);
+    let r = import_with_report(&source, &ImportOptions::default()).unwrap();
+    assert!(r.warnings.is_empty(), "{:?}", r.warnings);
+    let m = masked(&r.document);
+    assert_eq!(m.len(), 2);
+    for ((blob, mask), (want, alpha)) in m.iter().zip([(&inks, [255, 128, 255, 128]), (&keyed, [0, 0, 255, 255])]) {
+        assert_eq!(blob.mime, "image/tiff");
+        assert!(close(&blob.cmyk().unwrap().data, want, 0), "the inks as they were");
+        let (mblob, mw, mh) = mask.expect("an opacity mask");
+        assert_eq!((mw, mh), (2, 2));
+        let grey = image::load_from_memory(&mblob.bytes).unwrap().to_luma8();
+        assert_eq!(grey.into_raw(), alpha, "the mask's values");
+    }
+    // The mask art covers the image exactly.
+    let NodeKind::Layer { children, .. } = &r.document.layers[0].kind else { panic!() };
+    let img = children.iter().find(|n| matches!(n.kind, NodeKind::Image(_))).unwrap();
+    assert_eq!(img.geometric_bounds(), img.mask.as_ref().unwrap().art.geometric_bounds());
+    // Written as CMYK with the mask in grey; it opens with the same inks.
+    let out = export_with_report(&r.document, &opts(json!({}))).unwrap();
+    let w = written(&out.bytes);
+    assert!(w.iter().filter(|w| w.space == "DeviceCMYK").count() == 2 && w.iter().any(|w| w.space == "DeviceGray"), "{w:?}");
+    let back = import_with_report(&out.bytes, &ImportOptions::default()).unwrap();
+    let inked: Vec<Vec<u8>> = all_images(&back.document).iter().filter_map(|b| b.cmyk()).map(|i| i.data).collect();
+    assert!(inked.iter().any(|d| close(d, &inks, 3)) && inked.iter().any(|d| close(d, &keyed, 3)), "{:?}", back.warnings);
+    // A mask that hides nothing adds none.
+    let opaque = stream("/Type /XObject /Subtype /Image /Width 2 /Height 2 /ColorSpace /DeviceGray /BitsPerComponent 8", &[255; 4]);
+    let r = import_with_report(
+        &pdf_with_images(&[(cmyk_dict(2, 2, "/SMask 6 0 R /Filter /FlateDecode"), z(&inks))], &[opaque]),
+        &ImportOptions::default(),
+    )
+    .unwrap();
+    assert!(masked(&r.document)[0].1.is_none());
+}
+
+/// Every image blob a document's art uses (mask art included).
+fn all_images(d: &Document) -> Vec<&ImageBlob> {
+    let mut keys = vec![];
+    d.walk(|n| {
+        if let NodeKind::Image(im) = &n.kind {
+            keys.push(im.key.clone());
+        }
+        if let Some(m) = &n.mask {
+            m.art.walk(&mut |a| {
+                if let NodeKind::Image(im) = &a.kind {
+                    keys.push(im.key.clone());
+                }
+            });
+        }
+    });
+    keys.iter().filter_map(|k| d.images.get(k)).collect()
+}
+
 /// A document with CMYK image `blob` of `w` × `h` pixels placed 40 pt wide.
 fn image_doc(blob: ImageBlob, w: u32, h: u32) -> Document {
     let mut d = Document::new_with_mode(100.0, 100.0, ColorMode::Cmyk);

crates/render/src/lib.rs

@@ -21,7 +21,7 @@ pub mod proof;
 use std::collections::HashMap;
 use std::sync::Arc;
 
-use vectorcraft_doc::{AppearanceItem, Document, Node, NodeId, NodeKind, StrokeAlign, StrokeLayer, TextObject};
+use vectorcraft_doc::{AppearanceItem, Document, Node, NodeId, NodeKind, StrokeAlign, StrokeLayer, TextObject, TraceView};
 use vectorcraft_geom::{Affine, BezPath, FillRule, Rect, Shape};
 use vello_cpu::kurbo;
 use vello_cpu::peniko::{self, BlendMode, Compose, Mix};
@@ -100,6 +100,12 @@ pub struct RenderOptions {
     /// Screen view: placed documents draw from cached bitmaps made in the background (see
     /// [`placed_document`]); off, they draw exactly, read when needed.
     pub progressive_placed: bool,
+    /// Screen view: Image Trace objects draw as their View asks (outlines, the source image…);
+    /// off, they draw their tracing result, as exports and printing do.
+    pub trace_views: bool,
+    /// Images are sampled smoothly when scaled or rotated; off, each pixel takes its nearest image
+    /// pixel (Pixel Preview with File Handling › Display Bitmaps as Anti-aliased Images off).
+    pub smooth_images: bool,
 }
 
 /// How edges are rasterized (raster export option).
@@ -165,6 +171,8 @@ impl Default for RenderOptions {
             highlight_substitutions: false,
             anti_alias: AntiAlias::Art,
             progressive_placed: false,
+            trace_views: false,
+            smooth_images: true,
         }
     }
 }
@@ -646,8 +654,10 @@ impl Renderer {
         let b = match &a.kind {
             NodeKind::Layer { children, clip: false, .. } | NodeKind::Group { children, clip: false } if !fx::has_object_fx(a) => {
                 let mut acc: Option<Rect> = None;
+                // An Image Trace object's hidden source image shows in some of its views.
+                let source = a.trace.is_some().then(|| children.first()).flatten();
                 for c in children {
-                    if c.visible {
+                    if c.visible || source.is_some_and(|s| Arc::ptr_eq(s, c)) {
                         acc = vectorcraft_geom::union_opt(acc, self.bounds_of(c));
                     }
                 }
@@ -883,6 +893,9 @@ impl Renderer {
     /// What `n` draws inside its transparency group (`knockout`: its children knock each other out).
     fn draw_content(&mut self, ctx: &mut RenderContext, f: &Frame, n: &Node, knockout: bool) {
         match &n.kind {
+            NodeKind::Group { children, clip: false } if f.opts.trace_views && !f.opts.outline && n.trace_view() != TraceView::Result => {
+                self.draw_trace_view(ctx, f, children, n.trace_view(), knockout)
+            }
             NodeKind::Layer { children, clip: false, .. } | NodeKind::Group { children, clip: false } => {
                 self.draw_children(ctx, f, children, knockout)
             }
@@ -955,6 +968,25 @@ impl Renderer {
         }
     }
 
+    /// An Image Trace object's `children` (the hidden source image, then the traced shapes) as
+    /// `view` shows them on screen.
+    fn draw_trace_view(&mut self, ctx: &mut RenderContext, f: &Frame, children: &[Arc<Node>], view: TraceView, knockout: bool) {
+        let Some((source, shapes)) = children.split_first() else { return };
+        if view.shows_source() && matches!(source.kind, NodeKind::Image(_)) {
+            self.draw_node(ctx, f, source, true);
+        }
+        if view.shows_result() {
+            self.draw_children(ctx, f, shapes, knockout);
+        }
+        if view.shows_outlines() {
+            let opts = RenderOptions { outline: true, ..f.opts.clone() };
+            let frame = Frame { opts: &opts, ..*f };
+            for c in shapes {
+                self.draw_node(ctx, &frame, c, false);
+            }
+        }
+    }
+
     /// The children of a group: as the elements of a knockout group when `knockout`.
     fn draw_children(&mut self, ctx: &mut RenderContext, f: &Frame, children: &[Arc<Node>], knockout: bool) {
         if knockout {
@@ -1391,7 +1423,9 @@ impl Renderer {
             let pm = if outline { pm } else { self.ink_image(&cache_key, &pm, f.ink, f.doc.images.get(&im.key)) };
             let sx = im.width as f64 / pm.width().max(1) as f64;
             let sy = im.height as f64 / pm.height().max(1) as f64;
-            ctx.set_paint(vello_cpu::Image { image: vello_cpu::ImageSource::Pixmap(pm), sampler: peniko::ImageSampler::default() });
+            let quality = if f.opts.smooth_images { peniko::ImageQuality::Medium } else { peniko::ImageQuality::Low };
+            let sampler = peniko::ImageSampler { quality, ..Default::default() };
+            ctx.set_paint(vello_cpu::Image { image: vello_cpu::ImageSource::Pixmap(pm), sampler });
             match area {
                 Some((bp, rule)) => {
                     ctx.set_transform(f.view);

crates/render/src/tests.rs

@@ -362,3 +362,26 @@ fn invalid_dash_pattern_strokes_solid() {
         assert_eq!(img.pixels, solid.pixels, "dash {pattern:?}");
     }
 }
+
+/// An image drawn larger than its pixels samples smoothly, or with `smooth_images` off each screen
+/// pixel takes its nearest image pixel (Pixel Preview with File Handling › Display Bitmaps as
+/// Anti-aliased Images off, #394).
+#[test]
+fn images_take_their_nearest_pixel_without_smoothing() {
+    use vectorcraft_doc::{ImageBlob, ImageObject, NodeKind};
+    let img = image::RgbaImage::from_fn(2, 1, |x, _| image::Rgba(if x == 0 { [0, 0, 0, 255] } else { [255, 255, 255, 255] }));
+    let mut png = vec![];
+    img.write_to(&mut std::io::Cursor::new(&mut png), image::ImageFormat::Png).unwrap();
+    let mut d = Document::new(40.0, 20.0);
+    d.images.insert("bw".into(), ImageBlob::new("image/png", png));
+    let id = d.alloc_id();
+    let im = ImageObject { key: "bw".into(), width: 2, height: 1, xf: Affine::scale(20.0), link: None, placement: Default::default() };
+    d.insert(Some(d.layers[0].id), 0, Node::new(id, NodeKind::Image(im))).unwrap();
+    // How many pixels across the image are neither black nor white.
+    let greys = |smooth_images| {
+        let r = Renderer::new().render(&d, 40, 20, Affine::IDENTITY, &RenderOptions { smooth_images, ..Default::default() });
+        (0..40).filter(|x| (16..240).contains(&r.pixel(*x, 10)[0])).count()
+    };
+    assert!(greys(true) >= 4, "smooth: a ramp from black to white");
+    assert_eq!(greys(false), 0, "nearest: black, then white");
+}

crates/text/src/fontdb.rs

@@ -878,6 +878,31 @@ pub fn set_platform_font_files(list: PlatformFontFiles) {
     let _ = list;
 }
 
+/// Folders the user adds to the font scan (Preferences › Type › Additional Fonts Folder, #683),
+/// read with their subfolders after the platform's.
+#[cfg(not(target_arch = "wasm32"))]
+static USER_FONT_DIRS: std::sync::RwLock<Vec<PathBuf>> = std::sync::RwLock::new(Vec::new());
+
+/// Have [`system_font_dirs`] also read `dirs` (#683), so the fonts in them are listed and used as
+/// if installed. The next check for installed fonts ([`FontDb::installed_fonts_changed`]) then
+/// reports the change, and a scan catalogs them.
+pub fn set_user_font_dirs(dirs: Vec<PathBuf>) {
+    #[cfg(not(target_arch = "wasm32"))]
+    {
+        *USER_FONT_DIRS.write().unwrap_or_else(std::sync::PoisonError::into_inner) = dirs;
+    }
+    #[cfg(target_arch = "wasm32")]
+    let _ = dirs;
+}
+
+/// The folders [`set_user_font_dirs`] added (none on wasm).
+pub fn user_font_dirs() -> Vec<PathBuf> {
+    #[cfg(not(target_arch = "wasm32"))]
+    return USER_FONT_DIRS.read().unwrap_or_else(std::sync::PoisonError::into_inner).clone();
+    #[cfg(target_arch = "wasm32")]
+    Vec::new()
+}
+
 /// The platform's font folders (the system's and the user's) and the font files known to it
 /// outside them (on Windows those registered with it, and those [`set_platform_font_files`]
 /// lists), scanned by [`FontDb::global`].
@@ -926,6 +951,7 @@ pub fn system_font_dirs() -> Vec<PathBuf> {
         let files = fonts_outside(list(), &dirs);
         dirs.extend(files);
     }
+    dirs.extend(user_font_dirs());
     dirs
 }
 

crates/text/src/layout.rs

@@ -206,14 +206,17 @@ fn shrink_to_fit(db: &FontDb, t: &TextObject, opts: &LayoutOptions, min: f64) ->
     Some(best.unwrap_or_else(|| at(lo)))
 }
 
-/// `t` with every run's size, explicit leading and baseline shift scaled by `f` (auto leading
-/// follows the size; paragraph spacing stays).
+/// `t` with every run's size, explicit leading and baseline shift scaled by `f`, inline art's own
+/// shift included (auto leading and the art's size follow the size; paragraph spacing stays).
 fn scaled(t: &TextObject, f: f64) -> TextObject {
     let mut s = t.clone();
     for r in &mut s.runs {
         r.style.size *= f;
         r.style.leading = r.style.leading.map(|l| l * f);
         r.style.baseline_shift *= f;
+        if let Some(a) = &mut r.inline {
+            a.baseline_shift *= f;
+        }
     }
     s
 }
@@ -595,6 +598,15 @@ fn align_vertically(cx: &mut Ctx<'_>, paras: &[Range<usize>], t: &TextObject, re
                 g.origin.y += d;
             }
         }
+        // Inline art moves with its glyph's line.
+        for i in &mut cx.out.inlines {
+            let d = cx.out.glyphs.get(i.glyph).and_then(|g| offs.get(g.line)).copied().unwrap_or(0.0);
+            if d != 0.0 {
+                let m = Affine::translate((0.0, d));
+                i.xf = m * i.xf;
+                i.bounds = m.transform_rect_bbox(i.bounds);
+            }
+        }
         return;
     }
     let laid_out = |out: &TextLayout| out.lines.last().map_or(0, |l| l.end);
@@ -624,12 +636,17 @@ fn align_vertically(cx: &mut Ctx<'_>, paras: &[Range<usize>], t: &TextObject, re
             return;
         }
         let before = laid_out(&cx.out);
-        let prev = (std::mem::take(&mut cx.out.glyphs), std::mem::take(&mut cx.out.lines), std::mem::replace(&mut cx.out.overflow, false));
+        let prev = (
+            std::mem::take(&mut cx.out.glyphs),
+            std::mem::take(&mut cx.out.lines),
+            std::mem::take(&mut cx.out.inlines),
+            std::mem::replace(&mut cx.out.overflow, false),
+        );
         flow(cx, paras, t, Some(regions));
         if laid_out(&cx.out) < before {
             // Text no longer fits (lines got narrower, or flow around a wrap object): undo the
             // pass and try a smaller step.
-            (cx.out.glyphs, cx.out.lines, cx.out.overflow) = prev;
+            (cx.out.glyphs, cx.out.lines, cx.out.inlines, cx.out.overflow) = prev;
             for (r, (shift, gap)) in regions.iter_mut().zip(saved) {
                 r.shift = shift;
                 r.gap = gap;

crates/text/src/lib.rs

@@ -25,8 +25,8 @@ pub mod thread;
 pub use craft_fonts::{CRAFT_FONTS, CraftFont};
 pub use features::{LIGATURE_TRACKING_LIMITS, OtFeatures, explicit_ligatures, ligatures_suppressed_by};
 pub use fontdb::{
-    FALLBACK_FAMILY, FontClass, FontDb, FontFace, FontMatch, FontTraits, IcfMargins, PlatformFontFiles, set_platform_font_files, style_weight,
-    system_font_dirs,
+    FALLBACK_FAMILY, FontClass, FontDb, FontFace, FontMatch, FontTraits, IcfMargins, PlatformFontFiles, set_platform_font_files, set_user_font_dirs,
+    style_weight, system_font_dirs, user_font_dirs,
 };
 use kurbo::{Affine, BezPath, Point, Rect, Vec2};
 pub use layout::{layout, layout_with};
@@ -502,6 +502,8 @@ mod tests;
 #[cfg(test)]
 mod tests_bidi;
 #[cfg(test)]
+mod tests_combos;
+#[cfg(test)]
 mod tests_embed;
 #[cfg(test)]
 mod tests_fit;

crates/text/src/tests_combos.rs

@@ -0,0 +1,574 @@
+//! The text engine's newer features combined, two at a time and all together: ligatures under
+//! tracking, the paragraph composer, area type vertical alignment, Shrink Text to Fit,
+//! per-paragraph attributes and inline graphics. Each feature has its own tests; these check that
+//! one doesn't undo or skip another (as vertical alignment once left inline art behind).
+
+use super::*;
+use kurbo::Shape;
+use vectorcraft_doc::{AreaFit, CharStyle, Composer, InlineArt, Justify, TextKind, TextRun, VerticalAlign};
+use vectorcraft_geom::PathData;
+
+const COPY: &str = "Typography is the craft of arranging type to make written language legible, readable and appealing when displayed. \
+The arrangement of type involves selecting typefaces, point sizes, line lengths, line spacing and letter spacing.";
+
+/// Words full of `fi` (Source Serif 4 ligates it).
+const FI: &str = "fine fish finish first in fifty fields of fireflies, a fitting finale for the final fiddler";
+
+/// Two lines that single-line and every-line composers break differently (see
+/// `every_line_composer_balances_ragged_lines`).
+const RAG: &str = "Destroy all creatures with toughness X or less.";
+
+fn db() -> &'static FontDb {
+    FontDb::global()
+}
+
+fn sans(size: f64) -> CharStyle {
+    CharStyle { size, ..CharStyle::default() }
+}
+
+fn serif(size: f64, tracking: f64) -> CharStyle {
+    CharStyle { font_family: "Source Serif 4".into(), size, tracking, ..CharStyle::default() }
+}
+
+fn run(text: &str, style: CharStyle) -> TextRun {
+    TextRun::new(text, style)
+}
+
+/// A square symbol, `scale` × the run's size tall, raised `shift` points.
+fn art(scale: f64, shift: f64) -> InlineArt {
+    InlineArt { scale, baseline_shift: shift, bounds: Some(Rect::new(-5.0, -5.0, 5.0, 5.0)), ..InlineArt::new("sym") }
+}
+
+fn sym(scale: f64, shift: f64, style: CharStyle) -> TextRun {
+    TextRun::inline(art(scale, shift), style)
+}
+
+/// Area type in `frame` holding `runs`.
+fn area(runs: Vec<TextRun>, frame: Rect) -> TextObject {
+    let mut t = TextObject::point(Point::ZERO, "", sans(12.0));
+    t.runs = runs;
+    t.kind = TextKind::Area { frame: PathData::from_bezpath(&frame.to_path(0.1)) };
+    t.xf = Affine::IDENTITY;
+    t
+}
+
+/// `t` as Shrink Text to Fit lays it out at factor `f`, without fitting: sizes, explicit leading
+/// and baseline shifts scaled (inline art's own shift too), paragraph spacing kept.
+fn scaled_by(t: &TextObject, f: f64) -> TextObject {
+    let mut s = t.clone();
+    s.area.fit = AreaFit::None;
+    for r in &mut s.runs {
+        r.style.size *= f;
+        r.style.leading = r.style.leading.map(|l| l * f);
+        r.style.baseline_shift *= f;
+        if let Some(a) = &mut r.inline {
+            a.baseline_shift *= f;
+        }
+    }
+    s
+}
+
+fn line_texts(t: &TextObject, l: &TextLayout) -> Vec<String> {
+    let text = t.plain_text();
+    l.lines.iter().map(|li| text[li.start..li.end].trim_end().to_string()).collect()
+}
+
+/// Ligature clusters: glyphs standing for more than one character.
+fn ligatures(l: &TextLayout) -> usize {
+    l.glyphs.iter().filter(|g| g.len > 1 && !g.outline.elements().is_empty()).count()
+}
+
+/// Every inline graphic drawn once, where its glyph is: left edge on the glyph's origin, the
+/// scaled height, centred half the (scaled) cap height above the glyph's baseline plus its own
+/// (scaled) shift.
+fn assert_inlines_on_their_glyphs(t: &TextObject, l: &TextLayout, what: &str) {
+    let want = t.runs.iter().filter(|r| r.inline.is_some()).count();
+    assert_eq!(l.inlines.len(), want, "{what}: one placement per inline run");
+    let mut glyphs: Vec<usize> = l.inlines.iter().map(|i| i.glyph).collect();
+    glyphs.dedup();
+    assert_eq!(glyphs.len(), want, "{what}: no inline drawn twice");
+    for i in &l.inlines {
+        let g = &l.glyphs[i.glyph];
+        assert_eq!(g.run, i.run, "{what}");
+        let r = &t.runs[i.run];
+        let a = r.inline.as_ref().unwrap();
+        let size = r.style.size * l.fit_scale;
+        let face = db().face(&r.style.font_family, &r.style.font_style).unwrap();
+        let cap = face.cap_height * size / face.upem;
+        let b = i.bounds;
+        assert!((b.height() - a.scale * size).abs() < 1e-6, "{what}: height {} vs {}", b.height(), a.scale * size);
+        assert!((b.x0 - g.origin.x).abs() < 1e-6, "{what}: {b:?} vs origin {:?}", g.origin);
+        let centre = g.origin.y - cap * 0.5 - a.baseline_shift * l.fit_scale;
+        assert!((b.center().y - centre).abs() < 1e-6, "{what}: centre {} vs {centre} (line {})", b.center().y, g.line);
+        assert!(l.lines[g.line].glyph_start <= i.glyph && i.glyph < l.lines[g.line].glyph_end, "{what}");
+        assert!(l.bounds.contains(b.center()), "{what}: layout bounds {:?} miss {b:?}", l.bounds);
+    }
+}
+
+/// Space left below the last line of a one-cell frame.
+fn slack(l: &TextLayout, frame: Rect) -> f64 {
+    let last = l.lines.last().unwrap();
+    frame.y1 - (last.baseline + last.descent)
+}
+
+fn baselines(l: &TextLayout) -> Vec<f64> {
+    l.lines.iter().map(|li| li.baseline).collect()
+}
+
+// ---------- ligatures under tracking × … ----------
+
+#[test]
+fn ligatures_x_composer() {
+    // Justified (where every-line spreads word space) and ragged, with tracking inside the limits
+    // (kept) and letterspaced (dropped), whichever composer breaks the lines.
+    for justify in [Justify::Left, Justify::JustifyLeft] {
+        for (tracking, kept) in [(0.0, true), (20.0, true), (100.0, false)] {
+            let mut counts = vec![];
+            for composer in [Composer::SingleLine, Composer::EveryLine] {
+                let mut t = area(vec![run(&FI.repeat(3), serif(12.0, tracking))], Rect::new(0.0, 0.0, 170.0, 1000.0));
+                t.para.justify = justify;
+                t.para.composer = composer;
+                let l = layout(db(), &t);
+                assert!(l.lines.len() > 3, "several lines to compose");
+                counts.push(ligatures(&l));
+            }
+            assert_eq!(counts[0], counts[1], "{justify:?} {tracking}: composers shape alike");
+            assert_eq!(counts[0] > 0, kept, "{justify:?} {tracking}: {counts:?}");
+        }
+    }
+}
+
+#[test]
+fn ligatures_x_vertical_align() {
+    let frame = Rect::new(0.0, 0.0, 200.0, 400.0);
+    for tracking in [20.0, 100.0] {
+        let mut t = area(vec![run(FI, serif(12.0, tracking))], frame);
+        let top = layout(db(), &t);
+        for a in [VerticalAlign::Center, VerticalAlign::Bottom, VerticalAlign::Justify] {
+            t.area.vertical_align = a;
+            let l = layout(db(), &t);
+            let gids = |l: &TextLayout| l.glyphs.iter().map(|g| (g.gid, g.byte)).collect::<Vec<_>>();
+            assert_eq!(gids(&l), gids(&top), "{tracking} {a:?}: moving lines doesn't reshape them");
+            assert!(l.lines[0].baseline > top.lines[0].baseline + 1.0 || a == VerticalAlign::Justify, "{a:?}");
+        }
+    }
+}
+
+#[test]
+fn ligatures_x_shrink_text() {
+    // Tracking is in 1/1000 em, so scaling the size doesn't move it across the limits.
+    let frame = Rect::new(0.0, 0.0, 150.0, 60.0);
+    for (tracking, features, kept) in [(40.0, vec![], true), (100.0, vec![], false), (100.0, vec!["liga".to_string()], true)] {
+        let st = CharStyle { features, ..serif(14.0, tracking) };
+        let mut t = area(vec![run(&FI.repeat(2), st)], frame);
+        t.area.fit = AreaFit::ShrinkText { min_percent: 10.0 };
+        let l = layout(db(), &t);
+        assert!(!l.overflow && l.fit_scale < 1.0, "{tracking}: {}", l.fit_scale);
+        assert_eq!(ligatures(&l) > 0, kept, "{tracking}");
+        assert_eq!(ligatures(&l), ligatures(&layout(db(), &scaled_by(&t, l.fit_scale))), "{tracking}");
+    }
+}
+
+#[test]
+fn ligatures_x_paragraph_attrs() {
+    // Paragraph attributes don't touch shaping: a centred, indented, every-line paragraph keeps
+    // its ligatures and a letterspaced run in the next paragraph loses them.
+    let mut t = area(vec![run(&format!("{FI}\n"), serif(12.0, 10.0)), run(FI, serif(12.0, 120.0))], Rect::new(0.0, 0.0, 240.0, 600.0));
+    let mut second = t.para.clone();
+    second.justify = Justify::Center;
+    second.left_indent = 20.0;
+    second.space_before = 12.0;
+    t.set_paragraph_styles(vec![t.para.clone(), second]);
+    let l = layout(db(), &t);
+    let split = FI.len() + 1;
+    let ligs = |first: bool| l.glyphs.iter().filter(|g| g.len > 1 && (g.byte < split) == first).count();
+    assert!(ligs(true) > 0, "tracking 10 keeps them");
+    assert_eq!(ligs(false), 0, "tracking 120 drops them");
+}
+
+#[test]
+fn ligatures_x_inline_graphics() {
+    // An inline graphic between ligated words neither breaks their ligatures nor takes them: its
+    // own letterspaced run tracks the art without touching its neighbours.
+    let st = serif(14.0, 0.0);
+    let runs = vec![run("fine fish ", st.clone()), sym(1.0, 0.0, serif(14.0, 200.0)), run(" first fifty", st.clone())];
+    let t = area(runs, Rect::new(0.0, 0.0, 400.0, 100.0));
+    let l = layout(db(), &t);
+    let without = area(vec![run("fine fish ", st.clone()), run(" first fifty", st.clone())], Rect::new(0.0, 0.0, 400.0, 100.0));
+    assert_eq!(ligatures(&l), ligatures(&layout(db(), &without)), "the same ligatures as without the art");
+    assert!(ligatures(&l) >= 4, "fi in fine, fish, first and fifty");
+    assert_inlines_on_their_glyphs(&t, &l, "between ligatures");
+    let g = &l.glyphs[l.inlines[0].glyph];
+    assert!((g.advance - (14.0 + 200.0 / 1000.0 * 14.0)).abs() < 1e-6, "art width plus its tracking: {}", g.advance);
+}
+
+// ---------- composer × … ----------
+
+#[test]
+fn composer_x_vertical_align() {
+    let w = natural_width(RAG, 12.0) * 0.9;
+    let frame = Rect::new(0.0, 0.0, w, 200.0);
+    for composer in [Composer::SingleLine, Composer::EveryLine] {
+        let mut t = area(vec![run(RAG, sans(12.0))], frame);
+        t.para.composer = composer;
+        let top = layout(db(), &t);
+        for a in [VerticalAlign::Center, VerticalAlign::Bottom, VerticalAlign::Justify] {
+            t.area.vertical_align = a;
+            let l = layout(db(), &t);
+            assert_eq!(line_texts(&t, &l), line_texts(&t, &top), "{composer:?} {a:?}: the same breaks");
+            let want = match a {
+                VerticalAlign::Center => slack(&top, frame) * 0.5,
+                _ => slack(&top, frame),
+            };
+            let moved = l.lines.last().unwrap().baseline - top.lines.last().unwrap().baseline;
+            assert!((moved - want).abs() < 1e-6, "{composer:?} {a:?}: last line moved {moved}, want {want}");
+        }
+    }
+    // And the two composers still differ there.
+    let breaks = |c: Composer| {
+        let mut t = area(vec![run(RAG, sans(12.0))], frame);
+        t.para.composer = c;
+        t.area.vertical_align = VerticalAlign::Center;
+        line_texts(&t, &layout(db(), &t))
+    };
+    assert_ne!(breaks(Composer::SingleLine), breaks(Composer::EveryLine));
+}
+
+#[test]
+fn composer_x_shrink_text() {
+    // Each composer shrinks to the largest size at which its own breaks fit.
+    for justify in [Justify::Left, Justify::JustifyLeft] {
+        for composer in [Composer::SingleLine, Composer::EveryLine] {
+            let mut t = area(vec![run(COPY, sans(14.0))], Rect::new(0.0, 0.0, 180.0, 90.0));
+            t.para.composer = composer;
+            t.para.justify = justify;
+            t.area.fit = AreaFit::ShrinkText { min_percent: 20.0 };
+            let l = layout(db(), &t);
+            assert!(!l.overflow && l.fit_scale < 1.0, "{justify:?} {composer:?}");
+            let size = 14.0 * l.fit_scale;
+            assert!(layout(db(), &scaled_by(&t, (size + 0.1) / 14.0)).overflow, "{justify:?} {composer:?}: maximal at {size}");
+            let same = layout(db(), &scaled_by(&t, l.fit_scale));
+            assert_eq!(line_texts(&t, &same), line_texts(&t, &l), "{justify:?} {composer:?}");
+        }
+    }
+}
+
+#[test]
+fn composer_x_paragraph_attrs() {
+    // Each paragraph breaks with its own composer.
+    let w = natural_width("Destroy all creatures with toughness X or", 12.0) + 2.0;
+    let mut t = area(vec![run(&format!("{RAG}\n{RAG}\n{RAG}"), sans(12.0))], Rect::new(0.0, 0.0, w, 400.0));
+    let p = |c: Composer| vectorcraft_doc::ParaStyle { composer: c, ..t.para.clone() };
+    t.set_paragraph_styles(vec![p(Composer::SingleLine), p(Composer::EveryLine), p(Composer::SingleLine)]);
+    let l = layout(db(), &t);
+    let greedy = ["Destroy all creatures with toughness X or", "less."];
+    let every = ["Destroy all creatures with toughness X", "or less."];
+    let want: Vec<&str> = [greedy, every, greedy].concat();
+    assert_eq!(line_texts(&t, &l), want);
+    // The object-wide override still wins over every paragraph.
+    let forced = layout_with(db(), &t, &LayoutOptions { composer: Some(Composer::SingleLine), ..Default::default() });
+    assert_eq!(line_texts(&t, &forced), [greedy, greedy, greedy].concat());
+}
+
+#[test]
+fn composer_x_inline_graphics() {
+    // An inline graphic is a word's worth of box to the composers: each one breaks around it as
+    // around the letter it replaces, and the art follows its glyph to whichever line it lands on.
+    let st = sans(12.0);
+    let runs = |x: TextRun| vec![run("Destroy all creatures with toughness ", st.clone()), x, run(" or less.", st.clone())];
+    let with_art = runs(sym(0.7, 0.0, st.clone()));
+    let mut probe = area(with_art.clone(), Rect::new(0.0, 0.0, 10_000.0, 100.0));
+    probe.runs.truncate(2);
+    probe.runs.push(run(" or", st.clone()));
+    let w = layout(db(), &probe).lines[0].x1 + 2.0;
+    let sym_text = INLINE.to_string();
+    for (composer, first, second) in [
+        (Composer::SingleLine, format!("Destroy all creatures with toughness {sym_text} or"), "less."),
+        (Composer::EveryLine, format!("Destroy all creatures with toughness {sym_text}"), "or less."),
+    ] {
+        let mut t = area(with_art.clone(), Rect::new(0.0, 0.0, w, 200.0));
+        t.para.composer = composer;
+        let l = layout(db(), &t);
+        assert_eq!(line_texts(&t, &l), [first.as_str(), second], "{composer:?}");
+        assert_inlines_on_their_glyphs(&t, &l, &format!("{composer:?}"));
+    }
+}
+
+const INLINE: char = vectorcraft_doc::text::INLINE_CHAR;
+
+// ---------- vertical alignment × … ----------
+
+#[test]
+fn vertical_align_x_shrink_text() {
+    let frame = Rect::new(0.0, 0.0, 200.0, 100.0);
+    let mut t = area(vec![run(&COPY.repeat(2), sans(14.0))], frame);
+    t.area.fit = AreaFit::ShrinkText { min_percent: 10.0 };
+    let top = layout(db(), &t);
+    assert!(!top.overflow && top.fit_scale < 1.0);
+    for a in [VerticalAlign::Center, VerticalAlign::Bottom] {
+        t.area.vertical_align = a;
+        let l = layout(db(), &t);
+        assert_eq!(l.fit_scale, top.fit_scale, "{a:?}: aligning doesn't change the fit");
+        assert_eq!(line_texts(&t, &l), line_texts(&t, &top), "{a:?}");
+        let want = if a == VerticalAlign::Center { slack(&top, frame) * 0.5 } else { slack(&top, frame) };
+        for (b, b0) in baselines(&l).iter().zip(baselines(&top)) {
+            assert!((b - b0 - want).abs() < 1e-6, "{a:?}: {b} vs {b0} + {want}");
+        }
+        if a == VerticalAlign::Bottom {
+            assert!(slack(&l, frame).abs() < 1e-6, "the shrunk block sits on the bottom");
+        }
+    }
+    // Still overflowing at the minimum: aligned like any full frame (the same lines, moved by
+    // less than a line, inside the frame), at the same scale.
+    let frame = Rect::new(0.0, 0.0, 120.0, 40.0);
+    let mut t = area(vec![run(&COPY.repeat(4), sans(14.0))], frame);
+    t.area.fit = AreaFit::ShrinkText { min_percent: 90.0 };
+    let top = layout(db(), &t);
+    assert!(top.overflow && (top.fit_scale - 0.9).abs() < 1e-9);
+    for a in [VerticalAlign::Center, VerticalAlign::Bottom, VerticalAlign::Justify] {
+        t.area.vertical_align = a;
+        let l = layout(db(), &t);
+        assert!(l.overflow && l.fit_scale == top.fit_scale, "{a:?}");
+        assert_eq!(line_texts(&t, &l), line_texts(&t, &top), "{a:?}");
+        let first = &top.lines[0];
+        assert!(l.lines[0].baseline - first.baseline < first.ascent + first.descent, "{a:?}");
+        assert!(slack(&l, frame) >= -1e-6, "{a:?}");
+    }
+}
+
+#[test]
+fn vertical_align_x_paragraph_attrs() {
+    // Per-paragraph spacing and alignment survive the move: lines keep their x and their
+    // paragraph gaps, and the block lands where the alignment puts it.
+    let frame = Rect::new(0.0, 0.0, 260.0, 500.0);
+    let mut t = area(vec![run(&format!("{COPY}\n{COPY}\n{COPY}"), sans(11.0))], frame);
+    let mut mid = t.para.clone();
+    mid.justify = Justify::Center;
+    mid.space_before = 18.0;
+    mid.left_indent = 24.0;
+    let mut last = t.para.clone();
+    last.justify = Justify::Right;
+    last.space_before = 6.0;
+    t.set_paragraph_styles(vec![t.para.clone(), mid, last]);
+    let top = layout(db(), &t);
+    for a in [VerticalAlign::Center, VerticalAlign::Bottom] {
+        t.area.vertical_align = a;
+        let l = layout(db(), &t);
+        assert_eq!(line_texts(&t, &l), line_texts(&t, &top));
+        let d = l.lines[0].baseline - top.lines[0].baseline;
+        assert!(d > 1.0, "{a:?}");
+        for (li, l0) in l.lines.iter().zip(&top.lines) {
+            assert!((li.baseline - l0.baseline - d).abs() < 1e-6, "{a:?}: every line moves alike");
+            assert!((li.x0 - l0.x0).abs() < 1e-6 && (li.x1 - l0.x1).abs() < 1e-6, "{a:?}: x stays");
+        }
+        for (g, g0) in l.glyphs.iter().zip(&top.glyphs) {
+            assert!((g.origin.x - g0.origin.x).abs() < 1e-6 && (g.origin.y - g0.origin.y - d).abs() < 1e-6);
+        }
+    }
+    // Justify: spacing is shared out on top of each paragraph's own space before, never less.
+    t.area.vertical_align = VerticalAlign::Justify;
+    let l = layout(db(), &t);
+    assert!(slack(&l, frame).abs() < 1e-6, "justified to the bottom");
+    for (pair, pair0) in l.lines.windows(2).zip(top.lines.windows(2)) {
+        assert!(pair[1].baseline - pair[0].baseline >= pair0[1].baseline - pair0[0].baseline - 1e-6);
+    }
+}
+
+#[test]
+fn vertical_align_x_inline_graphics() {
+    // Inline art moves with its line however the lines are aligned, in one cell or several, in a
+    // rectangle or a frame the text flows into again.
+    let st = sans(12.0);
+    let mut runs = vec![];
+    for i in 0..6 {
+        runs.push(run(&format!("{} ", &COPY[i * 20..i * 20 + 20]), st.clone()));
+        runs.push(sym(1.0 + i as f64 * 0.1, i as f64 - 2.0, st.clone()));
+        if i == 2 {
+            runs.push(run("\n", st.clone()));
+        }
+    }
+    let mut tri = BezPath::new();
+    tri.move_to((0.0, 0.0));
+    tri.line_to((600.0, 0.0));
+    tri.line_to((300.0, 400.0));
+    tri.close_path();
+    for (name, frame, columns) in [
+        ("rect", Rect::new(0.0, 0.0, 160.0, 400.0).to_path(0.1), 1),
+        ("columns", Rect::new(0.0, 0.0, 400.0, 300.0).to_path(0.1), 2),
+        ("triangle", tri, 1),
+    ] {
+        for a in VerticalAlign::ALL {
+            let mut t = area(runs.clone(), Rect::ZERO);
+            t.kind = TextKind::Area { frame: PathData::from_bezpath(&frame) };
+            t.area.columns = columns;
+            t.area.vertical_align = a;
+            let l = layout(db(), &t);
+            assert!(!l.overflow, "{name} {a:?}");
+            assert_inlines_on_their_glyphs(&t, &l, &format!("{name} {a:?}"));
+        }
+    }
+}
+
+// ---------- Shrink Text to Fit × … ----------
+
+#[test]
+fn shrink_text_x_paragraph_attrs() {
+    // Shrinking scales the type, not each paragraph's spacing and indents: the fitted layout is
+    // the unfitted one at the scaled size.
+    let mut t = area(vec![run(&format!("{COPY}\n{COPY}"), sans(13.0))], Rect::new(0.0, 0.0, 220.0, 160.0));
+    let mut second = t.para.clone();
+    second.space_before = 14.0;
+    second.left_indent = 30.0;
+    second.first_line_indent = 12.0;
+    second.justify = Justify::JustifyLeft;
+    second.composer = Composer::SingleLine;
+    t.set_paragraph_styles(vec![t.para.clone(), second]);
+    t.area.fit = AreaFit::ShrinkText { min_percent: 10.0 };
+    let l = layout(db(), &t);
+    assert!(!l.overflow && l.fit_scale < 1.0);
+    let same = layout(db(), &scaled_by(&t, l.fit_scale));
+    assert_eq!(baselines(&l), baselines(&same));
+    assert_eq!(line_texts(&t, &l), line_texts(&t, &same));
+    // The second paragraph's indents are unscaled points.
+    let split = COPY.len() + 1;
+    let first_of_second = l.lines.iter().find(|li| li.start == split).unwrap();
+    assert!((first_of_second.x0 - 42.0).abs() < 1e-6, "{}", first_of_second.x0);
+    assert!(l.lines.iter().filter(|li| li.start > split).all(|li| (li.x0 - 30.0).abs() < 1e-6));
+    // A paragraph's space before alone can make the text overflow; shrinking still finds a fit.
+    let mut tall = t.clone();
+    tall.edit_paras(Some(1..2), |p| p.space_before = 100.0);
+    let l = layout(db(), &tall);
+    assert!(!l.overflow && l.fit_scale < layout(db(), &t).fit_scale);
+}
+
+#[test]
+fn shrink_text_x_inline_graphics() {
+    // Inline art shrinks with the type, its shift included, and stays centred on the cap height.
+    let st = sans(14.0);
+    let mut runs = vec![];
+    for i in 0..8 {
+        runs.push(run(&COPY[i * 25..i * 25 + 25], st.clone()));
+        runs.push(sym(1.2, 1.5, st.clone()));
+    }
+    let mut t = area(runs, Rect::new(0.0, 0.0, 200.0, 80.0));
+    t.area.fit = AreaFit::ShrinkText { min_percent: 10.0 };
+    let l = layout(db(), &t);
+    assert!(!l.overflow && l.fit_scale < 1.0, "{}", l.fit_scale);
+    assert_inlines_on_their_glyphs(&t, &l, "shrunk");
+    let same = layout(db(), &scaled_by(&t, l.fit_scale));
+    for (i, i0) in l.inlines.iter().zip(&same.inlines) {
+        assert!((i.bounds.y0 - i0.bounds.y0).abs() < 1e-6 && (i.bounds.x0 - i0.bounds.x0).abs() < 1e-6, "{:?} vs {:?}", i.bounds, i0.bounds);
+    }
+    // Large art makes lines taller; shrinking still fits it.
+    for r in &mut t.runs {
+        if let Some(a) = &mut r.inline {
+            a.scale = 3.0;
+        }
+    }
+    let big = layout(db(), &t);
+    assert!(!big.overflow && big.fit_scale < l.fit_scale);
+    assert_inlines_on_their_glyphs(&t, &big, "shrunk, big art");
+}
+
+// ---------- paragraph attributes × inline graphics ----------
+
+#[test]
+fn paragraph_attrs_x_inline_graphics() {
+    // Inline art in paragraphs of each alignment and indent sits on its glyph, and an inline
+    // graphic opening a paragraph takes that paragraph's first-line indent.
+    let st = sans(12.0);
+    let runs = vec![
+        run("Left aligned ", st.clone()),
+        sym(1.0, 0.0, st.clone()),
+        run(" text.\n", st.clone()),
+        sym(1.0, 0.0, st.clone()),
+        run(" centred with art first\nright ", st.clone()),
+        sym(1.5, -1.0, st.clone()),
+        run(" aligned\nfull justified text with ", st.clone()),
+        sym(1.0, 0.0, st.clone()),
+        run(" in the middle of a long line that wraps", st.clone()),
+    ];
+    let mut t = area(runs, Rect::new(0.0, 0.0, 200.0, 400.0));
+    let base = t.para.clone();
+    let with = |j: Justify, first: f64| vectorcraft_doc::ParaStyle { justify: j, first_line_indent: first, left_indent: 6.0, ..base.clone() };
+    t.set_paragraph_styles(vec![base.clone(), with(Justify::Center, 0.0), with(Justify::Right, 0.0), with(Justify::JustifyLeft, 18.0)]);
+    let l = layout(db(), &t);
+    assert_inlines_on_their_glyphs(&t, &l, "paragraphs");
+    let opening = &l.glyphs[l.inlines[1].glyph];
+    let line = &l.lines[opening.line];
+    assert!((opening.origin.x - line.x0).abs() < 1e-6, "the art opens its line");
+    assert!(((line.x0 + line.x1) * 0.5 - (6.0 + 200.0) * 0.5).abs() < 1e-6, "the centred paragraph: {line:?}");
+    let right = &l.lines[l.glyphs[l.inlines[2].glyph].line];
+    assert!((right.x1 - 200.0).abs() < 1e-6, "{right:?}");
+    let full = l.lines.iter().find(|li| li.start == t.plain_text().find("full").unwrap()).unwrap();
+    assert!((full.x0 - 24.0).abs() < 1e-6, "left indent + first-line indent: {full:?}");
+}
+
+// ---------- all of them ----------
+
+/// One area type object with everything on: two paragraphs with their own attributes (the first
+/// ragged every-line with inline symbols and lightly tracked ligatures, the second single-line,
+/// justified and spaced away), centred vertically, shrunk to fit.
+#[test]
+fn every_feature_at_once() {
+    let rules = serif(14.0, 15.0);
+    let flavor = CharStyle { font_style: "Italic".into(), ..serif(14.0, 0.0) };
+    let mut runs = vec![];
+    for (i, words) in
+        ["Sacrifice a fine fish", "First strike. When this finishes fighting, draw a card", "Fifty fireflies fill the field"].iter().enumerate()
+    {
+        runs.push(sym(0.8, 0.0, rules.clone()));
+        runs.push(run(&format!(": {words}. "), rules.clone()));
+        if i == 1 {
+            runs.push(sym(0.8, 0.5, rules.clone()));
+            runs.push(run(" Then fight again.", rules.clone()));
+        }
+    }
+    runs.push(run("\nThe finest fishers find their fortune in the fjords, if they first fix their nets.", flavor));
+    let frame = Rect::new(0.0, 0.0, 240.0, 110.0);
+    let mut t = area(runs, frame);
+    let mut flav = t.para.clone();
+    flav.space_before = 10.0;
+    flav.justify = Justify::JustifyLeft;
+    flav.composer = Composer::SingleLine;
+    t.para.composer = Composer::EveryLine;
+    t.set_paragraph_styles(vec![t.para.clone(), flav]);
+    t.area.fit = AreaFit::ShrinkText { min_percent: 30.0 };
+
+    let top = layout(db(), &t);
+    t.area.vertical_align = VerticalAlign::Center;
+    let l = layout(db(), &t);
+    assert!(!l.overflow && l.fit_scale < 1.0, "{}", l.fit_scale);
+    assert_eq!(l.fit_scale, top.fit_scale);
+    // Shrunk: the same as laying out the scaled text, then centring it.
+    let mut unfit = scaled_by(&t, l.fit_scale);
+    unfit.area.vertical_align = VerticalAlign::Top;
+    let plain = layout(db(), &unfit);
+    assert_eq!(line_texts(&t, &l), line_texts(&t, &plain));
+    let d = slack(&plain, frame) * 0.5;
+    assert!(d > 0.0);
+    for (b, b0) in baselines(&l).iter().zip(baselines(&plain)) {
+        assert!((b - b0 - d).abs() < 1e-6, "centred: {b} vs {b0} + {d}");
+    }
+    // Every symbol on its glyph; ligatures kept at tracking 15.
+    assert_inlines_on_their_glyphs(&t, &l, "everything");
+    assert_eq!(l.inlines.len(), 4);
+    assert!(ligatures(&l) >= 6, "{}", ligatures(&l));
+    // The flavor paragraph: justified (all but its last line fill the measure) and spaced away.
+    let split = t.plain_text().find('\n').unwrap() + 1;
+    let flavor_lines: Vec<&LineInfo> = l.lines.iter().filter(|li| li.start >= split).collect();
+    assert!(flavor_lines.len() >= 2);
+    for li in &flavor_lines[..flavor_lines.len() - 1] {
+        assert!((li.x1 - li.x0 - 240.0).abs() < 0.5, "justified: {li:?}");
+    }
+    // Deterministic.
+    let again = layout(db(), &t);
+    assert_eq!(baselines(&again), baselines(&l));
+    assert_eq!(again.inlines.iter().map(|i| i.bounds).collect::<Vec<_>>(), l.inlines.iter().map(|i| i.bounds).collect::<Vec<_>>());
+}
+
+/// The natural width of `s` set in one line at `size`.
+fn natural_width(s: &str, size: f64) -> f64 {
+    let l = layout(db(), &TextObject::point(Point::ZERO, s, sans(size)));
+    l.lines[0].x1 - l.lines[0].x0
+}

crates/text/src/tests_inline.rs

@@ -296,3 +296,33 @@ fn top_to_top_leading_spaces_inline_art_by_its_run() {
     let (tall0, tall1) = lines(3.0);
     assert!((small0 - tall0).abs() < 1e-6 && (small1 - tall1).abs() < 1e-6, "{small0} {small1} / {tall0} {tall1}");
 }
+
+#[test]
+fn inline_art_moves_with_vertically_aligned_lines() {
+    use vectorcraft_doc::text::{AreaOptions, VerticalAlign};
+    // A rectangle (lines shift) and a triangle (text flows again lower down).
+    let rect = Rect::new(0.0, 0.0, 400.0, 400.0).to_path(0.1);
+    let mut tri = kurbo::BezPath::new();
+    tri.move_to((0.0, 0.0));
+    tri.line_to((800.0, 0.0));
+    tri.line_to((400.0, 400.0));
+    tri.close_path();
+    for frame in [rect, tri] {
+        for align in [VerticalAlign::Center, VerticalAlign::Bottom] {
+            let mut t = text("A", art(1.0), "B", 20.0);
+            t.kind = TextKind::Area { frame: PathData::from_bezpath(&frame) };
+            t.area = AreaOptions { vertical_align: align, ..AreaOptions::default() };
+            let l = layout(db(), &t);
+            assert_eq!(l.inlines.len(), 1, "{align:?}");
+            let g = inline_glyph(&l);
+            let line = &l.lines[g.line];
+            assert!(line.baseline > 100.0, "{align:?}: not aligned, baseline {}", line.baseline);
+            // Still centred on the cap height above its (moved) baseline.
+            let face = db().face("Source Sans 3", "Regular").unwrap();
+            let cap = face.cap_height * 20.0 / face.upem;
+            let b = l.inlines[0].bounds;
+            assert!((b.center().y - (line.baseline - cap * 0.5)).abs() < 1e-6, "{align:?}: {b:?} baseline {}", line.baseline);
+            assert!((b.x0 - g.origin.x).abs() < 1e-6, "{align:?}: {b:?}");
+        }
+    }
+}

crates/tools/src/guides.rs

@@ -79,6 +79,9 @@ pub struct Targets {
     segments: Vec<(Rect, PathSeg)>,
     /// Ruler guides, which pull a point into line where they run (Snap to Point).
     rulers: Vec<Ruler>,
+    /// The bounds of the objects a moved selection spaces itself evenly with (Spacing Guides):
+    /// gathered only for moves ([`Self::for_move`]).
+    boxes: Vec<Rect>,
     /// How the guides these targets produce look.
     style: GuideStyle,
 }
@@ -145,11 +148,47 @@ fn lines_near(lines: &[(f64, Point, Kind)], v: f64, tol: f64) -> &[(f64, Point,
     within(lines, |l| l.0, v, tol)
 }
 
+/// `r`'s extent along the x axis (`x`) or the y axis.
+fn span(r: &Rect, x: bool) -> (f64, f64) {
+    if x { (r.x0, r.x1) } else { (r.y0, r.y1) }
+}
+
+/// The objects a moved selection (`moving`) spaces itself evenly with, by their bounds: each
+/// visible object on a layer as a whole (a group too), and inside a group holding some of the
+/// moving objects its other objects. At most [`BUDGET`].
+fn object_boxes(doc: &Document, moving: &[NodeId]) -> Vec<Rect> {
+    fn push(nodes: &[Arc<Node>], moving: &HashSet<NodeId>, holders: &HashSet<NodeId>, out: &mut Vec<Rect>) {
+        for n in nodes.iter().filter(|n| n.visible && !moving.contains(&n.id)) {
+            if out.len() >= BUDGET {
+                return;
+            }
+            match n.children() {
+                Some(ch) if n.is_layer() || holders.contains(&n.id) => push(ch, moving, holders, out),
+                _ => out.extend(n.geometric_bounds()),
+            }
+        }
+    }
+    let holders: HashSet<NodeId> = moving.iter().filter_map(|id| doc.ancestry(*id)).flatten().collect();
+    let mut out = vec![];
+    push(&doc.layers, &moving.iter().copied().collect(), &holders, &mut out);
+    out
+}
+
 impl Targets {
     pub fn collect(doc: &Document, exclude: &[NodeId], visible: Option<Rect>) -> Self {
         Self::collect_inner(doc, exclude, None, visible, Gather::Bounds)
     }
 
+    /// Targets for moving the selection of `cx`: [`Self::collect`]'s, styled as `cx` asks, and with
+    /// Smart Guides › Spacing Guides the objects it spaces itself evenly with ([`Self::snap_rect`]).
+    pub fn for_move(cx: &ToolContext) -> Self {
+        let mut t = Self::collect(cx.doc, &cx.selection.objects, None).styled(cx);
+        if cx.spacing_guides {
+            t.boxes = object_boxes(cx.doc, &cx.selection.objects);
+        }
+        t
+    }
+
     /// Targets for a drawn point: the art in `visible` (all of it for None) but `exclude`, its
     /// anchors, centres, edges and path segments, its anchors in line too. The anchors and
     /// segments of `exclude` (the path being drawn, whose bounds grow with it) stay targets.
@@ -508,7 +547,7 @@ impl Targets {
         let rects: Vec<Rect> = std::iter::once(Vec2::ZERO).chain(offsets.iter().copied()).map(|o| Rect::from_points(p + o, p + o)).collect();
         let (adj, mut ov, aligned) = self.align_rects(&rects, tol);
         let out = p + adj;
-        if aligned {
+        if aligned.contains(&true) {
             ov.extend(self.label(out, "align"));
         }
         (out, ov)
@@ -520,15 +559,107 @@ impl Targets {
     }
 
     /// Snap rectangles that move together (an artboard and its bleed): the edge or centre of any
-    /// of them nearest a target, per axis. Returns the shift and the guides.
+    /// of them nearest a target, per axis. A single moved selection with Spacing Guides
+    /// ([`Self::for_move`]) is spaced evenly along an axis that lines up with nothing
+    /// ([`Self::even_spacing`]). Returns the shift and the guides.
     pub fn snap_rects(&self, rects: &[Rect], tol: f64) -> (Vec2, Vec<Overlay>) {
-        let (d, ov, _) = self.align_rects(rects, tol);
+        let (mut d, mut ov, aligned) = self.align_rects(rects, tol);
+        if let [r] = rects
+            && !self.boxes.is_empty()
+        {
+            let moved = *r + d;
+            let mut spaced = false;
+            for (x, lined_up) in [true, false].into_iter().zip(aligned) {
+                if let Some((shift, _)) = self.even_spacing(moved, x, tol).filter(|_| !lined_up) {
+                    *(if x { &mut d.x } else { &mut d.y }) += shift;
+                    spaced = true;
+                }
+            }
+            // The equal gaps, marked where the rectangle ends up.
+            if spaced {
+                let done = *r + d;
+                for (x, lined_up) in [true, false].into_iter().zip(aligned) {
+                    let gaps = if lined_up { None } else { self.even_spacing(done, x, tol) };
+                    ov.extend(gaps.into_iter().flat_map(|(_, gaps)| gaps).flat_map(|g| self.gap_marks(g, x, tol)));
+                }
+            }
+        }
         (d, ov)
     }
 
-    /// [`Self::snap_rects`], also saying whether an axis lined up (even with Alignment Guides
-    /// off, or already in line, when there is no line or shift to tell).
-    fn align_rects(&self, rects: &[Rect], tol: f64) -> (Vec2, Vec<Overlay>, bool) {
+    /// Spacing Guides along the x axis (`x`) or the y axis for the moved rectangle `r`, among the
+    /// objects of its row (column): the shift (within `tol`) that leaves it as far from its
+    /// neighbour before or after it as two other objects of the row are apart, or as far from both
+    /// neighbours; and the equal gaps then, as (start, end, where across) along that axis.
+    fn even_spacing(&self, r: Rect, x: bool, tol: f64) -> Option<(f64, Vec<[f64; 3]>)> {
+        let (r0, r1) = span(&r, x);
+        let len = r1 - r0;
+        let (c0, c1) = span(&r, !x);
+        // The objects beside it, before or after, overlapping it across, by where they start.
+        let mut row: Vec<(Rect, f64, f64)> = self
+            .boxes
+            .iter()
+            .map(|b| (*b, span(b, x).0, span(b, x).1))
+            .filter(|(b, a0, a1)| span(b, !x).0 < c1 && span(b, !x).1 > c0 && (*a1 <= r0 + tol || *a0 >= r1 - tol))
+            .collect();
+        row.sort_by(|a, b| a.1.total_cmp(&b.1));
+        // Where two boxes overlap across: the middle of that (or of the space between them).
+        let mid = |a: &Rect, b: &Rect| (span(a, !x).0.max(span(b, !x).0) + span(a, !x).1.min(span(b, !x).1)) / 2.0;
+        // Each object and the nearest one after it, unless the moved rectangle sits between them.
+        let pairs: Vec<(f64, [f64; 3])> = row
+            .iter()
+            .filter_map(|(p, _, p1)| {
+                let next = row.partition_point(|(_, a0, _)| *a0 < *p1);
+                let (q, q0, _) = row.get(next)?;
+                let straddles = *p1 <= r0 + tol && *q0 >= r1 - tol;
+                (*q0 > *p1 && !straddles).then(|| (q0 - p1, [*p1, *q0, mid(p, q)]))
+            })
+            .collect();
+        let before = row.iter().filter(|(_, _, a1)| *a1 <= r0 + tol).max_by(|a, b| a.2.total_cmp(&b.2));
+        let after = row.iter().filter(|(_, a0, _)| *a0 >= r1 - tol).min_by(|a, b| a.1.total_cmp(&b.1));
+        // Where it could start, and the gap it repeats (None: halfway between its neighbours).
+        let mut starts: Vec<(f64, Option<f64>)> = vec![];
+        if let (Some(a), Some(b)) = (before, after)
+            && b.1 - a.2 > len
+        {
+            starts.push(((a.2 + b.1 - len) / 2.0, None));
+        }
+        for (g, _) in &pairs {
+            starts.extend(before.map(|a| (a.2 + g, Some(*g))));
+            starts.extend(after.map(|b| (b.1 - g - len, Some(*g))));
+        }
+        let (start, repeats) =
+            starts.into_iter().filter(|(t, _)| (t - r0).abs() <= tol).min_by(|a, b| (a.0 - r0).abs().total_cmp(&(b.0 - r0).abs()))?;
+        let at = r + if x { Vec2::new(start - r0, 0.0) } else { Vec2::new(0.0, start - r0) };
+        let (end, mut gaps) = (start + len, vec![]);
+        if let Some((a, _, a1)) = before
+            && repeats.is_none_or(|g| (start - a1 - g).abs() <= 1e-9)
+        {
+            gaps.push([*a1, start, mid(a, &at)]);
+        }
+        if let Some((b, b0, _)) = after
+            && repeats.is_none_or(|g| (b0 - end - g).abs() <= 1e-9)
+        {
+            gaps.push([end, *b0, mid(b, &at)]);
+        }
+        if let Some(g) = repeats {
+            gaps.extend(pairs.iter().filter(|(pg, _)| (pg - g).abs() <= 1e-9).map(|(_, gap)| *gap));
+        }
+        Some((start - r0, gaps))
+    }
+
+    /// A Spacing Guides mark: a line across the gap (start, end, where across) along the x axis
+    /// (`x`) or the y axis, with a tick `tick` long either side of it at each end.
+    fn gap_marks(&self, [u0, u1, c]: [f64; 3], x: bool, tick: f64) -> [Overlay; 3] {
+        let pt = |u: f64, c: f64| if x { Point::new(u, c) } else { Point::new(c, u) };
+        let line = |a: Point, b: Point| Overlay::Line { a, b, color: self.style.color, dashed: false };
+        [line(pt(u0, c), pt(u1, c)), line(pt(u0, c - tick), pt(u0, c + tick)), line(pt(u1, c - tick), pt(u1, c + tick))]
+    }
+
+    /// [`Self::snap_rects`] before Spacing Guides, also saying whether each axis (x, y) lined up
+    /// (even with Alignment Guides off, or already in line, when there is no line or shift to
+    /// tell).
+    fn align_rects(&self, rects: &[Rect], tol: f64) -> (Vec2, Vec<Overlay>, [bool; 2]) {
         let nearest = |targets: &[(f64, Point, Kind)], along: fn(&Rect) -> [f64; 3]| {
             rects
                 .iter()
@@ -553,7 +684,7 @@ impl Targets {
             let (x0, x1) = (from.x.min(r.x0), from.x.max(r.x1));
             ov.extend(self.line(Point::new(x0, y), Point::new(x1, y)));
         }
-        (d, ov, best_x.is_some() || best_y.is_some())
+        (d, ov, [best_x.is_some(), best_y.is_some()])
     }
 
     /// Snap a bounding-box resize. `a` is the scale [`crate::bbox::scale_for_drag`] gave for
@@ -1064,6 +1195,53 @@ mod tests {
         assert!(anchor(&ov), "{ov:?}");
     }
 
+    /// Smart Guides › Spacing Guides (#394): a moved selection lands as far from its neighbour as
+    /// two other objects of its row are apart, or halfway between its two neighbours, and the
+    /// equal gaps are marked; up and down the same in a column. Off, it stays where it is dragged.
+    #[test]
+    fn spacing_guides_space_a_moved_selection_evenly() {
+        let mut d = Document::new(500.0, 500.0);
+        let l = d.layers[0].id;
+        // A and B 20 apart in a row at y 300–340, C and D 30 apart in a column at x 400–440.
+        for r in [
+            Rect::new(20.0, 300.0, 60.0, 340.0),
+            Rect::new(80.0, 300.0, 120.0, 340.0),
+            Rect::new(400.0, 20.0, 440.0, 50.0),
+            Rect::new(400.0, 80.0, 440.0, 110.0),
+        ] {
+            let id = d.alloc_id();
+            d.insert(Some(l), 0, Node::path(id, vectorcraft_geom::shapes::rectangle(r), Default::default())).unwrap();
+        }
+        let (s, p) = (Selection::default(), paint());
+        let lines = |ov: &[Overlay]| ov.iter().filter(|o| matches!(o, Overlay::Line { color, .. } if *color == MAGENTA)).count();
+        let t = Targets::for_move(&cx(&d, &s, &p));
+        // 21 after B: 20, as A and B, with both gaps marked (a line and two ticks each).
+        let (dv, ov) = t.snap_rect(Rect::new(141.0, 305.0, 181.0, 345.0), 4.0);
+        assert_eq!(dv, Vec2::new(-1.0, 0.0));
+        assert_eq!(lines(&ov), 6, "{ov:?}");
+        assert!(ov.iter().any(|o| matches!(o, Overlay::Line { a, b, .. } if (a.x, b.x) == (120.0, 140.0) && a.y == b.y)), "{ov:?}");
+        assert!(ov.iter().any(|o| matches!(o, Overlay::Line { a, b, .. } if (a.x, b.x) == (60.0, 80.0) && a.y == b.y)), "{ov:?}");
+        // Halfway between B and a box at 220–260: 50 either side.
+        let mut wide = d.clone();
+        let id = wide.alloc_id();
+        wide.insert(Some(l), 0, Node::path(id, vectorcraft_geom::shapes::rectangle(Rect::new(220.0, 300.0, 260.0, 340.0)), Default::default()))
+            .unwrap();
+        let (dv, ov) = Targets::for_move(&cx(&wide, &s, &p)).snap_rect(Rect::new(148.0, 305.0, 188.0, 345.0), 4.0);
+        assert_eq!(dv, Vec2::new(2.0, 0.0));
+        assert!(lines(&ov) >= 6, "{ov:?}");
+        // A column: 28 under D, as C and D are 30 apart.
+        let (dv, ov) = t.snap_rect(Rect::new(405.0, 138.0, 445.0, 168.0), 4.0);
+        assert_eq!(dv, Vec2::new(0.0, 2.0));
+        assert!(ov.iter().any(|o| matches!(o, Overlay::Line { a, b, .. } if (a.y, b.y) == (110.0, 140.0) && a.x == b.x)), "{ov:?}");
+        // Above C, 32 over it: 30.
+        let (dv, _) = t.snap_rect(Rect::new(405.0, -42.0, 445.0, -12.0), 4.0);
+        assert_eq!(dv, Vec2::new(0.0, 2.0));
+        // Off: nowhere to go, and no marks.
+        let off = ToolContext { spacing_guides: false, ..cx(&d, &s, &p) };
+        let (dv, ov) = Targets::for_move(&off).snap_rect(Rect::new(141.0, 305.0, 181.0, 345.0), 4.0);
+        assert_eq!((dv, lines(&ov)), (Vec2::ZERO, 0));
+    }
+
     /// Preferences › Smart Guides › Display Options (#394): the colour, and Alignment Guides and
     /// Anchor/Path Labels off, change what shows and never where a point lands.
     #[test]

crates/tools/src/lib.rs

@@ -322,6 +322,10 @@ pub struct ToolContext<'a> {
     pub measurement_labels: bool,
     /// Smart Guides → Transform Tools: the readouts while scaling, rotating and shearing.
     pub transform_tools_guides: bool,
+    /// Smart Guides → Spacing Guides: a moved selection snaps to spacing equal to the gap between
+    /// two other objects in its row or column, or evenly between its two neighbours, and the
+    /// equal gaps show.
+    pub spacing_guides: bool,
     /// Smart Guides → Snapping Tolerance (screen pixels): how near a smart guide target pulls the
     /// pointer, a dragged edge or a drawn point.
     pub snapping_tolerance: f64,
@@ -695,6 +699,7 @@ pub(crate) mod testutil {
             anchor_path_labels: true,
             measurement_labels: true,
             transform_tools_guides: true,
+            spacing_guides: true,
             snapping_tolerance: 4.0,
             construction_angles: guides::construction_angles(guides::DEFAULT_CONSTRUCTION_ANGLES),
             screen: None,

crates/tools/src/select.rs

@@ -87,7 +87,7 @@ impl MoveSnap {
     pub(crate) fn new(cx: &ToolContext) -> Self {
         Self {
             bounds: selection_bounds(cx),
-            targets: cx.smart_guides.then(|| Targets::collect(cx.doc, &cx.selection.objects, None).styled(cx)),
+            targets: cx.smart_guides.then(|| Targets::for_move(cx)),
             points: Targets::snap_to_point(cx, &cx.selection.objects),
         }
     }

crates/tools/src/xform/artboard.rs

@@ -259,10 +259,19 @@ impl Tool for ArtboardTool {
         }
     }
 
+    /// Delete/Backspace remove the active artboard ahead of the Clear shortcut, which would only
+    /// delete selected art; with one artboard left (it can't be deleted) they stay the shortcut's.
+    fn claims_key(&self, cx: &ToolContext, key: ToolKey) -> bool {
+        matches!(key, ToolKey::Delete | ToolKey::Backspace)
+            && self.drag.is_none()
+            && cx.doc.artboards.len() > 1
+            && self.active < cx.doc.artboards.len()
+    }
+
     fn key(&mut self, cx: &ToolContext, key: ToolKey, _mods: Mods) -> Vec<Action> {
         match key {
-            ToolKey::Delete | ToolKey::Backspace if self.drag.is_none() => {
-                if cx.doc.artboards.len() <= 1 || self.active >= cx.doc.artboards.len() {
+            ToolKey::Delete | ToolKey::Backspace => {
+                if !self.claims_key(cx, key) {
                     return vec![];
                 }
                 let i = self.active;
@@ -522,7 +531,8 @@ mod tests {
         let a = t.pointer(&cx, &ev(PointerKind::Up, 1100.0, 1050.0));
         assert_eq!(a[0], Action::Exec("artboard.new".into(), json!({"x": 1000.0, "y": 1000.0, "width": 100.0, "height": 50.0})));
         assert_eq!(a[1], Action::Notify("created".into()));
-        // Delete removes the active artboard.
+        // Delete removes the active artboard, ahead of the Clear shortcut.
+        assert!(t.claims_key(&cx, ToolKey::Delete) && t.claims_key(&cx, ToolKey::Backspace));
         assert_eq!(t.key(&cx, ToolKey::Delete, Mods::default()), vec![Action::Exec("artboard.delete".into(), json!({"index": 1}))]);
         assert_eq!(t.key(&cx, ToolKey::Escape, Mods::default()), vec![Action::SwitchTool("selection".into())]);
     }

crates/trace/src/centerline.rs

@@ -0,0 +1,379 @@
+//! Create Strokes: the parts of a colour layer no wider than the Stroke width, traced as stroked
+//! centre lines instead of filled outlines.
+//!
+//! 1. **Distance**: a chamfer (3-4) distance transform gives each pixel its distance to the nearest
+//!    pixel outside the layer.
+//! 2. **Lines**: an 8-connected component whose widest point (twice its largest distance, less
+//!    one) is within the stroke width is a line; wider ones stay filled areas.
+//! 3. **Skeleton**: the line is thinned to one pixel (Zhang–Suen, applied pixel by pixel so it
+//!    keeps its topology and two-pixel-wide lines don't vanish), then staircase corners that
+//!    don't connect anything are dropped.
+//! 4. **Graph**: runs of skeleton pixels between ends and junctions (touching junction pixels
+//!    merged into one point) become polylines through the pixel centres; rings without ends
+//!    become closed ones. Short spurs that thinning leaves at junctions are pruned and the runs
+//!    on either side of a junction left with two of them are joined.
+//! 5. **Curves**: each polyline is fitted like an outline ([`fit::fit_polyline`]); the stroke
+//!    width is the line's mean width (its pixel count over its length).
+
+use std::collections::HashSet;
+
+use vectorcraft_geom::{PathData, Point};
+
+use crate::fit::{self, FitOptions};
+
+/// One line of a colour layer: its centre lines and the width to stroke them with.
+pub(crate) struct Line {
+    pub path: PathData,
+    /// Stroke width in pixels.
+    pub width: f64,
+    pub pixels: usize,
+}
+
+/// The lines of colour `label` in `labels` (`w` × `h`, row-major) no wider than `max_width`
+/// pixels, and which pixels they cover (to leave out of the filled areas).
+pub(crate) fn lines(labels: &[u16], label: u16, w: usize, h: usize, max_width: f64, o: &FitOptions) -> (Vec<bool>, Vec<Line>) {
+    let mut thin = vec![false; labels.len()];
+    let mut out = vec![];
+    if w == 0 || h == 0 || labels.len() != w * h {
+        return (thin, out);
+    }
+    let mask = |i: usize| labels.get(i) == Some(&label);
+    let dt = distance(&mask, w, h);
+    let mut seen = vec![false; w * h];
+    let mut stack = vec![];
+    for start in 0..w * h {
+        if !mask(start) || seen[start] {
+            continue;
+        }
+        let mut comp = vec![];
+        seen[start] = true;
+        stack.push(start);
+        while let Some(i) = stack.pop() {
+            comp.push(i);
+            for j in neighbours(i, w, h) {
+                if mask(j) && !seen[j] {
+                    seen[j] = true;
+                    stack.push(j);
+                }
+            }
+        }
+        let widest = 2.0 * f64::from(comp.iter().map(|&i| dt[i]).max().unwrap_or(0)) / 3.0 - 1.0;
+        if widest > max_width {
+            continue;
+        }
+        let Some(line) = trace_line(&comp, w, max_width, o) else { continue };
+        for &i in &comp {
+            thin[i] = true;
+        }
+        out.push(line);
+    }
+    (thin, out)
+}
+
+/// The 8 neighbours of pixel `i` inside the `w` × `h` image.
+fn neighbours(i: usize, w: usize, h: usize) -> impl Iterator<Item = usize> {
+    let (x, y) = ((i % w) as i64, (i / w) as i64);
+    const AROUND: [(i64, i64); 8] = [(-1, -1), (0, -1), (1, -1), (-1, 0), (1, 0), (-1, 1), (0, 1), (1, 1)];
+    AROUND.into_iter().filter_map(move |(dx, dy)| {
+        let (nx, ny) = (x + dx, y + dy);
+        (nx >= 0 && ny >= 0 && nx < w as i64 && ny < h as i64).then(|| ny as usize * w + nx as usize)
+    })
+}
+
+/// Chamfer 3-4 distance (3 per pixel step, saturating) of each pixel in `mask` to the nearest
+/// pixel outside it; outside the image counts as outside.
+fn distance(mask: &impl Fn(usize) -> bool, w: usize, h: usize) -> Vec<u16> {
+    let mut d = vec![0u16; w * h];
+    let at = |d: &[u16], x: i64, y: i64| {
+        if x < 0 || y < 0 || x >= w as i64 || y >= h as i64 { 0 } else { d.get(y as usize * w + x as usize).copied().unwrap_or(0) }
+    };
+    for y in 0..h {
+        for x in 0..w {
+            let i = y * w + x;
+            if mask(i) {
+                let (x, y) = (x as i64, y as i64);
+                let steps = [(x - 1, y, 3), (x - 1, y - 1, 4), (x, y - 1, 3), (x + 1, y - 1, 4)];
+                d[i] = steps.iter().map(|&(nx, ny, c)| at(&d, nx, ny).saturating_add(c)).min().unwrap_or(0);
+            }
+        }
+    }
+    for y in (0..h).rev() {
+        for x in (0..w).rev() {
+            let i = y * w + x;
+            if mask(i) {
+                let (xi, yi) = (x as i64, y as i64);
+                let steps = [(xi + 1, yi, 3), (xi + 1, yi + 1, 4), (xi, yi + 1, 3), (xi - 1, yi + 1, 4)];
+                let v = steps.iter().map(|&(nx, ny, c)| at(&d, nx, ny).saturating_add(c)).min().unwrap_or(0);
+                d[i] = d[i].min(v);
+            }
+        }
+    }
+    d
+}
+
+/// A grid around one line: its pixels with a one-pixel empty border.
+struct Grid {
+    on: Vec<bool>,
+    w: usize,
+    h: usize,
+    /// Image position of grid pixel (0, 0).
+    x0: i64,
+    y0: i64,
+}
+
+impl Grid {
+    /// The 8 neighbours (N, NE, E, SE, S, SW, W, NW) of interior pixel `i`.
+    fn ring(&self, i: usize) -> [bool; 8] {
+        let w = self.w;
+        let g = |j: usize| self.on.get(j).copied().unwrap_or(false);
+        [g(i - w), g(i - w + 1), g(i + 1), g(i + w + 1), g(i + w), g(i + w - 1), g(i - 1), g(i - w - 1)]
+    }
+    fn interior(&self) -> impl Iterator<Item = usize> + use<> {
+        let (w, h) = (self.w, self.h);
+        (1..h.saturating_sub(1)).flat_map(move |y| (1..w.saturating_sub(1)).map(move |x| y * w + x))
+    }
+    fn neighbours(&self, i: usize) -> impl Iterator<Item = usize> + '_ {
+        let w = self.w;
+        [i - w, i - w + 1, i + 1, i + w + 1, i + w, i + w - 1, i - 1, i - w - 1].into_iter().filter(|&j| self.on.get(j).copied().unwrap_or(false))
+    }
+    fn degree(&self, i: usize) -> usize {
+        self.neighbours(i).count()
+    }
+    /// The centre of pixel `i` in image coordinates.
+    fn centre(&self, i: usize) -> Point {
+        Point::new((self.x0 + (i % self.w) as i64) as f64 + 0.5, (self.y0 + (i / self.w) as i64) as f64 + 0.5)
+    }
+}
+
+/// Zhang–Suen thinning. Each sub-iteration picks the pixels to remove from the same state, so the
+/// skeleton stays centred; they are then removed one by one, each only if it still doesn't
+/// disconnect anything, so a two-pixel-wide line thins to one pixel instead of vanishing.
+fn thin(g: &mut Grid) {
+    let removable = |p: &[bool; 8]| {
+        let b = p.iter().filter(|v| **v).count();
+        let a = (0..8).filter(|&k| !p[k] && p[(k + 1) % 8]).count();
+        (2..=6).contains(&b) && a == 1
+    };
+    let mut picked = vec![];
+    loop {
+        let mut changed = false;
+        for step in 0..2 {
+            picked.clear();
+            for i in g.interior() {
+                if !g.on[i] {
+                    continue;
+                }
+                let p = g.ring(i);
+                let (n, e, s, w) = (p[0], p[2], p[4], p[6]);
+                let side = if step == 0 { !(e && s && (n || w)) } else { !(n && w && (e || s)) };
+                if side && removable(&p) {
+                    picked.push(i);
+                }
+            }
+            for &i in &picked {
+                if removable(&g.ring(i)) {
+                    g.on[i] = false;
+                    changed = true;
+                }
+            }
+        }
+        if !changed {
+            break;
+        }
+    }
+    // Staircase corners: a pixel whose neighbours stay connected without it (Yokoi's
+    // 8-connectivity number 1) and that doesn't end the line.
+    loop {
+        let mut changed = false;
+        for i in g.interior() {
+            if !g.on[i] || g.degree(i) < 2 {
+                continue;
+            }
+            let p = g.ring(i);
+            // x1 = E, x2 = NE, x3 = N, x4 = NW, x5 = W, x6 = SW, x7 = S, x8 = SE.
+            let x = [p[2], p[1], p[0], p[7], p[6], p[5], p[4], p[3]];
+            let off = |k: usize| !x[k % 8];
+            let c8: usize = [0, 2, 4, 6].iter().map(|&k| usize::from(off(k)) - usize::from(off(k) && off(k + 1) && off(k + 2))).sum();
+            if c8 == 1 {
+                g.on[i] = false;
+                changed = true;
+            }
+        }
+        if !changed {
+            break;
+        }
+    }
+}
+
+/// A run of skeleton pixels between two nodes (`None`: none, a ring).
+#[derive(Clone)]
+struct Run {
+    pts: Vec<Point>,
+    ends: [Option<usize>; 2],
+    closed: bool,
+}
+
+impl Run {
+    fn length(&self) -> f64 {
+        self.pts.windows(2).map(|p| p[0].distance(p[1])).sum::<f64>()
+            + if self.closed { self.pts.first().zip(self.pts.last()).map_or(0.0, |(a, b)| a.distance(*b)) } else { 0.0 }
+    }
+}
+
+/// The centre lines of one line component (pixel indices of the `w`-wide image).
+fn trace_line(comp: &[usize], w: usize, max_width: f64, o: &FitOptions) -> Option<Line> {
+    let xs = comp.iter().map(|&i| i % w);
+    let ys = comp.iter().map(|&i| i / w);
+    let (x0, x1, y0, y1) = (xs.clone().min()?, xs.max()?, ys.clone().min()?, ys.max()?);
+    let (gw, gh) = (x1 - x0 + 3, y1 - y0 + 3);
+    let mut g = Grid { on: vec![false; gw * gh], w: gw, h: gh, x0: x0 as i64 - 1, y0: y0 as i64 - 1 };
+    for &i in comp {
+        g.on[(i / w - y0 + 1) * gw + (i % w - x0 + 1)] = true;
+    }
+    thin(&mut g);
+    let skeleton: Vec<usize> = g.interior().filter(|&i| g.on[i]).collect();
+    if skeleton.len() < 2 {
+        return None;
+    }
+    // Nodes: line ends, and junctions with the junction pixels touching them.
+    let mut node = vec![usize::MAX; g.on.len()];
+    let mut centres: Vec<Point> = vec![];
+    for &i in &skeleton {
+        let d = g.degree(i);
+        if d == 2 || node[i] != usize::MAX {
+            continue;
+        }
+        let id = centres.len();
+        let mut members = vec![i];
+        node[i] = id;
+        if d > 2 {
+            let mut k = 0;
+            while let Some(&p) = members.get(k) {
+                k += 1;
+                for q in g.neighbours(p).collect::<Vec<_>>() {
+                    if node[q] == usize::MAX && g.degree(q) > 2 {
+                        node[q] = id;
+                        members.push(q);
+                    }
+                }
+            }
+        }
+        let sum = members.iter().fold(Point::ZERO, |s, &m| s + g.centre(m).to_vec2());
+        centres.push(Point::new(sum.x / members.len() as f64, sum.y / members.len() as f64));
+    }
+    // Runs from each node, then the rings left.
+    let mut used: HashSet<(usize, usize)> = HashSet::new();
+    let edge = |a: usize, b: usize| (a.min(b), a.max(b));
+    let mut runs: Vec<Run> = vec![];
+    for &p in skeleton.iter().filter(|&&i| node[i] != usize::MAX) {
+        for q in g.neighbours(p).collect::<Vec<_>>() {
+            if node[q] == node[p] || !used.insert(edge(p, q)) {
+                continue;
+            }
+            let mut pts = vec![centres[node[p]], g.centre(q)];
+            let (mut prev, mut cur) = (p, q);
+            while node[cur] == usize::MAX {
+                let Some(next) = g.neighbours(cur).find(|&n| n != prev && !used.contains(&edge(cur, n))) else { break };
+                used.insert(edge(cur, next));
+                pts.push(g.centre(next));
+                (prev, cur) = (cur, next);
+            }
+            let end = (node[cur] != usize::MAX).then_some(node[cur]);
+            if let (Some(e), Some(last)) = (end, pts.last_mut()) {
+                *last = centres[e];
+            }
+            runs.push(Run { pts, ends: [Some(node[p]), end], closed: false });
+        }
+    }
+    for &s in &skeleton {
+        if node[s] != usize::MAX || g.neighbours(s).any(|n| used.contains(&edge(s, n))) {
+            continue;
+        }
+        let mut pts = vec![g.centre(s)];
+        let (mut prev, mut cur) = (usize::MAX, s);
+        let mut closed = false;
+        while let Some(next) = g.neighbours(cur).find(|&n| n != prev && !used.contains(&edge(cur, n))) {
+            used.insert(edge(cur, next));
+            if next == s {
+                closed = true;
+                break;
+            }
+            pts.push(g.centre(next));
+            (prev, cur) = (cur, next);
+        }
+        runs.push(Run { pts, ends: [None, None], closed });
+    }
+    // The line's mean width: its pixels over its length (the skeleton stops about half a width
+    // short of each end).
+    let width = |runs: &[Run]| {
+        let length: f64 = runs.iter().map(Run::length).sum();
+        let px = comp.len() as f64;
+        ((-length + (length * length + 4.0 * px).sqrt()) / 2.0).clamp(1.0, max_width.max(1.0))
+    };
+    let spur = width(&runs);
+    let runs = join(prune(runs, centres.len(), spur), centres.len());
+    let width = width(&runs);
+    let subs: Vec<_> = runs.iter().filter_map(|r| fit::fit_polyline(&r.pts, r.closed, o)).collect();
+    if subs.is_empty() {
+        return None;
+    }
+    Some(Line { path: PathData::new(subs), width, pixels: comp.len() })
+}
+
+/// The runs without the spurs thinning leaves: runs shorter than the line's `width` from a line end
+/// to a junction that keeps at least two other runs.
+fn prune(runs: Vec<Run>, nodes: usize, width: f64) -> Vec<Run> {
+    let mut degree = vec![0usize; nodes];
+    for e in runs.iter().flat_map(|r| r.ends.iter().flatten()) {
+        degree[*e] += 1;
+    }
+    let mut order: Vec<usize> = (0..runs.len()).collect();
+    order.sort_by(|a, b| runs[*a].length().total_cmp(&runs[*b].length()));
+    let mut keep = vec![true; runs.len()];
+    for i in order {
+        let r = &runs[i];
+        let [Some(a), Some(b)] = r.ends else { continue };
+        let (tip, fork) = if degree[a] == 1 { (a, b) } else { (b, a) };
+        if degree[tip] == 1 && degree[fork] >= 3 && r.length() < width.max(2.0) {
+            keep[i] = false;
+            degree[tip] -= 1;
+            degree[fork] -= 1;
+        }
+    }
+    runs.into_iter().zip(keep).filter_map(|(r, k)| k.then_some(r)).collect()
+}
+
+/// The runs joined through every node exactly two of them meet at (a run meeting itself closes).
+fn join(runs: Vec<Run>, nodes: usize) -> Vec<Run> {
+    let mut runs: Vec<Option<Run>> = runs.into_iter().map(Some).collect();
+    for n in 0..nodes {
+        let at: Vec<(usize, usize)> = runs
+            .iter()
+            .enumerate()
+            .flat_map(|(i, r)| r.iter().flat_map(move |r| (0..2).filter(move |&k| r.ends[k] == Some(n)).map(move |k| (i, k))))
+            .collect();
+        let [(i, ki), (j, kj)] = at[..] else { continue };
+        if i == j {
+            if let Some(r) = runs[i].as_mut() {
+                r.pts.pop();
+                r.ends = [None, None];
+                r.closed = r.pts.len() >= 3;
+            }
+            continue;
+        }
+        let (Some(mut a), Some(mut b)) = (runs[i].take(), runs[j].take()) else { continue };
+        // a ends at n, b starts at n.
+        if ki == 0 {
+            a.pts.reverse();
+            a.ends.reverse();
+        }
+        if kj == 1 {
+            b.pts.reverse();
+            b.ends.reverse();
+        }
+        a.pts.extend(b.pts.into_iter().skip(1));
+        a.ends[1] = b.ends[1];
+        runs[i] = Some(a);
+    }
+    runs.into_iter().flatten().collect()
+}

crates/trace/src/fit.rs

@@ -133,6 +133,49 @@ pub(crate) fn fit_loop(l: &Loop, o: &FitOptions) -> Option<SubPath> {
     Some(sp)
 }
 
+/// Fit a centre line through `pts` (pixel-centre points in order) into a Bézier subpath: the
+/// points within `polygon_tol` of it are dropped (Douglas–Peucker), then curves are fitted. A
+/// `closed` line runs back to its first point.
+pub(crate) fn fit_polyline(pts: &[Point], closed: bool, o: &FitOptions) -> Option<SubPath> {
+    let n = pts.len();
+    let first = *pts.first()?;
+    if n < 2 {
+        return None;
+    }
+    let mut ext = pts.to_vec();
+    let mut keep = vec![false; n + 1];
+    keep[0] = true;
+    if closed {
+        // Split the ring at its first point and the point farthest from it.
+        ext.push(first);
+        let far = (1..n).max_by(|&i, &j| pts[i].distance_squared(first).total_cmp(&pts[j].distance_squared(first))).unwrap_or(n / 2);
+        keep[far] = true;
+        rdp(&ext, 0, far, o.polygon_tol, &mut keep);
+        rdp(&ext, far, n, o.polygon_tol, &mut keep);
+    } else {
+        keep[n - 1] = true;
+        rdp(&ext, 0, n - 1, o.polygon_tol, &mut keep);
+    }
+    let mut poly: Vec<Point> = (0..n).filter(|&i| keep[i]).map(|i| pts[i]).collect();
+    if closed && poly.len() < 3 {
+        poly = pts.to_vec();
+    }
+    if poly.len() < if closed { 3 } else { 2 } {
+        return None;
+    }
+    let sp = SubPath::polyline(&poly, closed);
+    let fitted =
+        simplify_with(&PathData::single(sp), &SimplifyOptions { tolerance: o.fit_tol, corner_angle_deg: o.corner_angle, straight_lines: false });
+    let mut sp = fitted.subpaths.into_iter().next()?;
+    if sp.anchors.len() < 2 {
+        return None;
+    }
+    if o.snap_lines {
+        snap_to_lines(&mut sp, (o.fit_tol * 2.0).max(1.5));
+    }
+    Some(sp)
+}
+
 /// Retract the handles of curves that stay within `tol` of their chord.
 fn snap_to_lines(sp: &mut SubPath, tol: f64) {
     let n = sp.anchors.len();

crates/trace/src/lib.rs

@@ -4,8 +4,11 @@
 //! and classic colour quantisation), not from any existing implementation:
 //!
 //! 1. **Quantise** the image into a small palette: a luminance threshold (Black and White), 1-D
-//!    k-means over the luminance histogram (Grayscale), or median cut followed by weighted
-//!    k-means over a 15-bit colour histogram (Color). Transparent pixels are left out.
+//!    k-means over the luminance histogram (Grayscale), or, in Color, over a 15-bit colour
+//!    histogram as the [`Palette`] asks: median cut to a colour count followed by weighted k-means
+//!    (Limited), median cut until every colour box is tight (Full Tone), one of those two by
+//!    whether the image is flat art (Automatic), or the most used colours of a swatch library
+//!    (Document Library). Transparent pixels are left out.
 //! 2. **Remove noise**: 4-connected same-colour components smaller than `noise` pixels are merged
 //!    into their most common neighbouring colour.
 //! 3. **Follow boundaries**: for each colour layer, the pixel-crack edges between inside and
@@ -18,10 +21,15 @@
 //! 5. **Curves**: the polygon is fitted with cubic Béziers (`vectorcraft_pathops::simplify_with`,
 //!    least squares with corner detection); optionally nearly-straight curves snap to lines.
 //!
+//! With **Create: Strokes**, the parts of a colour layer no wider than the stroke width are traced
+//! as stroked centre lines instead (see `centerline`); without Fills, wider parts become stroked
+//! outlines.
+//!
 //! Colour layers are traced either *abutting* (each colour's own area; shapes share edges) or
 //! *overlapping* (stacked: each layer also covers every layer above it, so no hairline gaps).
 #![forbid(unsafe_code)]
 
+mod centerline;
 mod contour;
 mod fit;
 mod mosaic;
@@ -34,7 +42,7 @@ use vectorcraft_geom::PathData;
 
 pub use contour::{Component, Loop, trace_mask};
 pub use mosaic::mosaic;
-pub use quantize::{Quantized, TRANSPARENT, denoise, quantize};
+pub use quantize::{FULL_TONE_MAX, Quantized, TRANSPARENT, denoise, quantize};
 
 /// Errors decoding a raster.
 #[derive(Debug, thiserror::Error)]
@@ -132,6 +140,28 @@ pub enum Method {
     Overlapping,
 }
 
+/// Where Color mode's colours come from (the Palette popup).
+#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub enum Palette {
+    /// The `colors` colours that best represent the image.
+    #[default]
+    #[serde(alias = "Limited")]
+    Limited,
+    /// As many colours as the image's tones need, up to [`FULL_TONE_MAX`] (photos, gradients):
+    /// `color_detail` sets how close two colours may be and stay apart.
+    #[serde(alias = "Full Tone")]
+    FullTone,
+    /// Flat art (a few colours cover nearly all of it) traces with exactly those colours, anything
+    /// else as Full Tone.
+    #[serde(alias = "Automatic")]
+    Automatic,
+    /// The most used colours of a swatch library ([`TraceParams::swatches`]), at most `colors` of
+    /// them, exactly as they are.
+    #[serde(alias = "library", alias = "Document Library")]
+    DocumentLibrary,
+}
+
 /// Image Trace parameters (the Image Trace panel).
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 #[serde(default, rename_all = "camelCase")]
@@ -139,8 +169,20 @@ pub struct TraceParams {
     pub mode: Mode,
     /// Black and White: pixels darker than this (luminance 0–255) are black.
     pub threshold: u8,
-    /// Palette size for Color, number of grays for Grayscale (2–256).
+    /// Color: where the colours come from.
+    pub palette: Palette,
+    /// Palette size for Color (Limited; at most this many for Document Library), number of grays
+    /// for Grayscale (2–256).
     pub colors: u32,
+    /// Full Tone and Automatic: how many colours, 0 (few) – 100 (many).
+    pub color_detail: f64,
+    /// Document Library: the swatch library, `"document"` (the document's swatches) or a library id
+    /// or name. The caller looks its colours up into `swatches`.
+    pub library: String,
+    /// Document Library: the library's colours (sRGB). Not saved: they are looked up from
+    /// `library` at every trace.
+    #[serde(skip)]
+    pub swatches: Vec<[u8; 3]>,
     /// Paths (fidelity) 0–100: higher follows the pixels more tightly.
     pub paths: f64,
     /// Corners 0–100: higher keeps more corners.
@@ -152,6 +194,12 @@ pub struct TraceParams {
     pub ignore_white: bool,
     /// Replace nearly-straight curves with straight lines.
     pub snap_curves_to_lines: bool,
+    /// Create: trace areas as filled shapes.
+    pub fills: bool,
+    /// Create: trace lines no wider than `stroke_width` as stroked centre lines.
+    pub strokes: bool,
+    /// Stroke: the widest feature (px) traced as a stroke.
+    pub stroke_width: f64,
 }
 
 impl Default for TraceParams {
@@ -160,13 +208,20 @@ impl Default for TraceParams {
         Self {
             mode: Mode::BlackAndWhite,
             threshold: 128,
+            palette: Palette::Limited,
             colors: 6,
+            color_detail: 50.0,
+            library: "document".into(),
+            swatches: vec![],
             paths: 50.0,
             corners: 75.0,
             noise: 25,
             method: Method::Abutting,
             ignore_white: false,
             snap_curves_to_lines: false,
+            fills: true,
+            strokes: false,
+            stroke_width: 10.0,
         }
     }
 }
@@ -250,7 +305,8 @@ pub fn presets() -> Vec<(&'static str, TraceParams)> {
     PRESET_NAMES.iter().filter_map(|n| Some((*n, preset(n)?))).collect()
 }
 
-/// One traced shape: an outer contour plus its holes, filled with `color`.
+/// One traced shape: an outer contour plus its holes, filled with `color`, or (with `stroke`)
+/// lines stroked with it.
 #[derive(Clone, Debug, PartialEq)]
 pub struct TracedPath {
     /// In pixel coordinates (x right, y down; the image spans `0..width × 0..height`).
@@ -258,6 +314,9 @@ pub struct TracedPath {
     pub color: [u8; 3],
     /// Filled pixel count of the component the path came from.
     pub pixels: usize,
+    /// Create Strokes: the path is stroked this wide (px), not filled (centre lines, or the
+    /// outlines of wider areas without Fills).
+    pub stroke: Option<f64>,
 }
 
 /// The traced result, bottom-most path first.
@@ -357,15 +416,37 @@ impl Layers<'_> {
         let (params, opts) = (self.params, &self.opts);
         let color = *self.q.palette.get(ci)?;
         let overlapping = params.method == Method::Overlapping;
+        let (w, h) = (self.w, self.h);
+        // Create Strokes: this colour's lines, left out of its areas.
+        let (thin, lines) = if params.strokes {
+            centerline::lines(&self.q.labels, u16::try_from(ci).unwrap_or(TRANSPARENT), w, h, params.stroke_width, opts)
+        } else {
+            (vec![], vec![])
+        };
         let mask: Vec<bool> = self
             .q
             .labels
             .iter()
-            .map(|&l| l != TRANSPARENT && if overlapping { self.rank.get(l as usize).is_some_and(|&lr| lr >= r) } else { l as usize == ci })
+            .enumerate()
+            .map(|(i, &l)| {
+                l != TRANSPARENT
+                    && !thin.get(i).copied().unwrap_or(false)
+                    && if overlapping { self.rank.get(l as usize).is_some_and(|&lr| lr >= r) } else { l as usize == ci }
+            })
             .collect();
+        // Without Fills, areas are outlined with a 1 px stroke.
+        let area_stroke = (params.strokes && !params.fills).then_some(1.0);
         let min_hole = params.noise.max(1) as i64;
         let mut paths = vec![];
-        for comp in trace_mask(&mask, self.w, self.h) {
+        let mut add = |path: PathData, pixels: usize, stroke: Option<f64>| {
+            let n = path.anchor_count();
+            if self.anchors.fetch_add(n, Ordering::Relaxed).saturating_add(n) > self.max_anchors {
+                return false;
+            }
+            paths.push(TracedPath { path, color, pixels, stroke });
+            true
+        };
+        for comp in trace_mask(&mask, w, h) {
             let Some(outer) = fit::fit_loop(&comp.outer, opts) else { continue };
             let mut subs = vec![outer];
             for hole in &comp.holes {
@@ -374,12 +455,14 @@ impl Layers<'_> {
                 }
                 subs.extend(fit::fit_loop(hole, opts));
             }
-            let path = PathData::new(subs);
-            let n = path.anchor_count();
-            if self.anchors.fetch_add(n, Ordering::Relaxed).saturating_add(n) > self.max_anchors {
+            if !add(PathData::new(subs), comp.pixels, area_stroke) {
+                return None;
+            }
+        }
+        for line in lines {
+            if !add(line.path, line.pixels, Some(line.width)) {
                 return None;
             }
-            paths.push(TracedPath { path, color, pixels: comp.pixels });
         }
         Some(paths)
     }

crates/trace/src/quantize.rs

@@ -1,6 +1,6 @@
 //! Colour reduction and noise removal.
 
-use crate::{Mode, Raster, TraceParams};
+use crate::{Mode, Palette, Raster, TraceParams};
 
 /// Label of a transparent (untraced) pixel.
 pub const TRANSPARENT: u16 = u16::MAX;
@@ -67,10 +67,8 @@ pub fn quantize(img: &Raster, params: &TraceParams) -> Quantized {
                     b.sum[2] += p[2] as u64;
                 }
             }
-            let used: Vec<(usize, [f64; 3], f64)> =
-                bins.iter().enumerate().filter(|(_, b)| b.n > 0).map(|(i, b)| (i, b.mean(), b.n as f64)).collect();
-            let k = params.colors.clamp(2, 256) as usize;
-            let centers = kmeans_rgb(&used, k);
+            let used: Vec<Used> = bins.iter().enumerate().filter(|(_, b)| b.n > 0).map(|(i, b)| (i, b.mean(), b.n as f64)).collect();
+            let centers = color_palette(&used, params);
             let mut lut = vec![0u16; 1 << 15];
             for (i, c, _) in &used {
                 lut[*i] = nearest_rgb(&centers, *c) as u16;
@@ -187,12 +185,108 @@ fn nearest_rgb(centers: &[[f64; 3]], c: [f64; 3]) -> usize {
     best.1
 }
 
-/// Median cut for the initial palette, then weighted k-means refinement over histogram bins.
-fn kmeans_rgb(used: &[(usize, [f64; 3], f64)], k: usize) -> Vec<[f64; 3]> {
+/// The most colours Full Tone (and Automatic on continuous-tone images) makes.
+pub const FULL_TONE_MAX: usize = 256;
+
+/// A histogram bin in use: its index, mean colour and pixel count.
+type Used = (usize, [f64; 3], f64);
+
+/// Color mode's palette for the histogram bins `used`, as `params.palette` asks.
+fn color_palette(used: &[Used], params: &TraceParams) -> Vec<[f64; 3]> {
+    let k = params.colors.clamp(2, 256) as usize;
+    let detail = (params.color_detail / 100.0).clamp(0.0, 1.0);
+    // Full Tone: split until no colour box is wider than 96 (few colours) … 8 (many) levels per
+    // channel, which is one histogram bin.
+    let full_tone = || refine(used, centers(&median_cut(used, FULL_TONE_MAX, 96.0 - 88.0 * detail)));
+    match params.palette {
+        Palette::Limited => kmeans_rgb(used, k),
+        Palette::FullTone => full_tone(),
+        Palette::Automatic => match flat_colors(used, detail) {
+            Some(n) => kmeans_rgb(used, n),
+            None => full_tone(),
+        },
+        Palette::DocumentLibrary if !params.swatches.is_empty() => library_colors(used, &params.swatches, k),
+        // No library colours to use: as Limited.
+        Palette::DocumentLibrary => kmeans_rgb(used, k),
+    }
+}
+
+/// Automatic: how many colours flat art is made of, or `None` for continuous tone (photos,
+/// gradients). Flat art has most of its pixels in a few tight colours (anti-aliased edges and
+/// noise aside): the bins holding 90% of the pixels are few, and each colour's pixels sit mostly
+/// in one bin. `detail` (0–1) lets smaller colour areas count as colours of their own.
+fn flat_colors(used: &[Used], detail: f64) -> Option<usize> {
+    let total: f64 = used.iter().map(|u| u.2).sum();
+    if total <= 0.0 {
+        return Some(2);
+    }
+    let mut by_count: Vec<&Used> = used.iter().collect();
+    by_count.sort_by(|a, b| b.2.total_cmp(&a.2));
+    let mut covered = 0.0;
+    let main = by_count
+        .iter()
+        .take_while(|u| {
+            let before = covered;
+            covered += u.2;
+            before < 0.9 * total
+        })
+        .count();
+    if main > FLAT_BINS {
+        return None;
+    }
+    let boxes = median_cut(used, 64, 24.0);
+    let min_share = (0.04 - 0.035 * detail) * total;
+    let colours: Vec<&ColorBox> = boxes.iter().filter(|b| b.weight >= min_share).collect();
+    let weight: f64 = colours.iter().map(|b| b.weight).sum();
+    let peaks: f64 = colours.iter().map(|b| b.peak).sum();
+    (weight >= 0.9 * total && peaks >= 0.5 * weight && colours.len() <= 32).then_some(colours.len().max(2))
+}
+
+/// The most histogram bins flat art's main colours spread over (a few bins per colour).
+const FLAT_BINS: usize = 96;
+
+/// Document Library: the `k` swatches (at most) that the most pixels are nearest to.
+fn library_colors(used: &[Used], swatches: &[[u8; 3]], k: usize) -> Vec<[f64; 3]> {
+    let mut all: Vec<[f64; 3]> = vec![];
+    for s in swatches {
+        let c = s.map(f64::from);
+        if !all.contains(&c) {
+            all.push(c);
+        }
+    }
+    let mut weight = vec![0.0; all.len()];
+    for (_, c, n) in used {
+        if let Some(w) = weight.get_mut(nearest_rgb(&all, *c)) {
+            *w += n;
+        }
+    }
+    let mut order: Vec<usize> = (0..all.len()).collect();
+    order.sort_by(|a, b| weight[*b].total_cmp(&weight[*a]).then(a.cmp(b)));
+    order.into_iter().take(k.max(1)).filter_map(|i| all.get(i).copied()).collect()
+}
+
+/// A median-cut box: its weighted mean colour, pixel count and the pixel count of its heaviest bin.
+struct ColorBox {
+    mean: [f64; 3],
+    weight: f64,
+    peak: f64,
+}
+
+fn centers(boxes: &[ColorBox]) -> Vec<[f64; 3]> {
+    boxes.iter().map(|b| b.mean).collect()
+}
+
+/// Median cut to `k` colours, then weighted k-means refinement over histogram bins.
+fn kmeans_rgb(used: &[Used], k: usize) -> Vec<[f64; 3]> {
+    refine(used, centers(&median_cut(used, k, 0.0)))
+}
+
+/// Median cut: repeatedly split the box with the largest weighted extent, while there are fewer
+/// than `k` boxes and some box spans more than `spread` levels of a channel.
+fn median_cut(used: &[Used], k: usize, spread: f64) -> Vec<ColorBox> {
     if used.is_empty() {
-        return vec![[255.0; 3]];
+        return vec![ColorBox { mean: [255.0; 3], weight: 0.0, peak: 0.0 }];
     }
-    // Median cut: repeatedly split the box with the largest weighted extent.
     let mut boxes: Vec<Vec<usize>> = vec![(0..used.len()).collect()];
     while boxes.len() < k {
         let mut best: Option<(f64, usize, usize)> = None;
@@ -210,7 +304,7 @@ fn kmeans_rgb(used: &[(usize, [f64; 3], f64)], k: usize) -> Vec<[f64; 3]> {
                 wsum += used[i].2;
             }
             let (ch, range) = (0..3).map(|c| (c, hi[c] - lo[c])).fold((0, -1.0), |a, b| if b.1 > a.1 { b } else { a });
-            if range <= 0.0 {
+            if range <= spread.max(0.0) {
                 continue;
             }
             let score = range * wsum.sqrt();
@@ -235,21 +329,25 @@ fn kmeans_rgb(used: &[(usize, [f64; 3], f64)], k: usize) -> Vec<[f64; 3]> {
         boxes.push(b);
         boxes.push(tail);
     }
-    let mut centers: Vec<[f64; 3]> = boxes
+    boxes
         .iter()
         .map(|b| {
             let mut s = [0.0; 3];
-            let mut w = 0.0;
+            let (mut w, mut peak) = (0.0, 0.0f64);
             for &i in b {
                 for (acc, v) in s.iter_mut().zip(used[i].1) {
                     *acc += v * used[i].2;
                 }
                 w += used[i].2;
+                peak = peak.max(used[i].2);
             }
-            [s[0] / w, s[1] / w, s[2] / w]
+            ColorBox { mean: [s[0] / w, s[1] / w, s[2] / w], weight: w, peak }
         })
-        .collect();
-    // Lloyd refinement.
+        .collect()
+}
+
+/// Lloyd refinement of `centers` over the bins `used`.
+fn refine(used: &[Used], mut centers: Vec<[f64; 3]>) -> Vec<[f64; 3]> {
     for _ in 0..12 {
         let mut sum = vec![[0.0; 3]; centers.len()];
         let mut cnt = vec![0.0; centers.len()];

crates/trace/src/tests.rs

@@ -1,4 +1,5 @@
 use super::*;
+use vectorcraft_geom::Point;
 
 const BLACK: [u8; 4] = [0, 0, 0, 255];
 const WHITE: [u8; 4] = [255, 255, 255, 255];
@@ -348,3 +349,206 @@ fn an_image_too_large_to_trace_is_refused_before_decoding() {
     assert!(matches!(err, TraceError::TooLarge { width: 30_000, height: 30_000, .. }), "{err}");
     assert!(matches!(Raster::decode(&png_header(64, 64)), Err(TraceError::Decode(_))), "a small header goes on to decoding");
 }
+
+/// Four flat colours with anti-aliased (blended) edges between the quadrants.
+fn flat_quads() -> Raster {
+    const C: [[u8; 3]; 4] = [[220, 30, 30], [30, 200, 40], [30, 40, 210], [240, 220, 20]];
+    Raster::from_fn(100, 100, |x, y| {
+        let at = |x: u32, y: u32| C[usize::from(x >= 50) + 2 * usize::from(y >= 50)];
+        let (a, b) = (at(x, y), at(x.saturating_sub(1), y.saturating_sub(1)));
+        // Blend the pixels along the quadrant edges, as an anti-aliased picture has them.
+        let c: Vec<u8> = a.iter().zip(b).map(|(p, q)| ((u16::from(*p) + u16::from(q)) / 2) as u8).collect();
+        [c[0], c[1], c[2], 255]
+    })
+}
+
+/// A smooth two-dimensional colour gradient (continuous tone).
+fn gradient() -> Raster {
+    Raster::from_fn(128, 128, |x, y| [(x * 2) as u8, (y * 2) as u8, (255 - x - y / 2) as u8, 255])
+}
+
+fn palette(img: &Raster, palette: Palette, colors: u32, color_detail: f64) -> Vec<[u8; 3]> {
+    let p = TraceParams { mode: Mode::Color, palette, colors, color_detail, noise: 4, ..TraceParams::default() };
+    trace(img, &p).palette
+}
+
+#[test]
+fn palettes_parse_from_their_ids_and_names() {
+    for (id, want) in [
+        ("limited", Palette::Limited),
+        ("fullTone", Palette::FullTone),
+        ("Automatic", Palette::Automatic),
+        ("documentLibrary", Palette::DocumentLibrary),
+        ("library", Palette::DocumentLibrary),
+    ] {
+        let p: TraceParams = serde_json::from_value(serde_json::json!({ "palette": id })).unwrap();
+        assert_eq!(p.palette, want, "{id}");
+    }
+    assert_eq!(TraceParams::default().palette, Palette::Limited);
+    // The library's colours are looked up at every trace, not saved with the settings.
+    let v = serde_json::to_value(TraceParams { swatches: vec![[1, 2, 3]], ..TraceParams::default() }).unwrap();
+    assert!(v.get("swatches").is_none() && v["library"] == "document" && v["colorDetail"] == 50.0, "{v}");
+}
+
+#[test]
+fn full_tone_follows_the_tones_the_image_has() {
+    // Flat art keeps its few colours (and the tones of its blended edges); a gradient gets many,
+    // more with more detail.
+    let flat = palette(&flat_quads(), Palette::FullTone, 6, 50.0);
+    assert!((4..=10).contains(&flat.len()), "flat art: {flat:?}");
+    let few = palette(&gradient(), Palette::FullTone, 6, 10.0).len();
+    let many = palette(&gradient(), Palette::FullTone, 6, 90.0).len();
+    assert!(few > 6 && many > few && many <= FULL_TONE_MAX, "{few} then {many} colours");
+}
+
+#[test]
+fn automatic_traces_flat_art_with_its_colours_and_photos_in_full_tone() {
+    let flat = palette(&flat_quads(), Palette::Automatic, 2, 50.0);
+    assert_eq!(flat.len(), 4, "the four flat colours, whatever `colors` says: {flat:?}");
+    assert!(flat.iter().any(|c| c[0] > 200 && c[1] < 60 && c[2] < 60), "red is one of them: {flat:?}");
+    let tone = palette(&gradient(), Palette::Automatic, 2, 50.0);
+    assert_eq!(tone.len(), palette(&gradient(), Palette::FullTone, 2, 50.0).len(), "continuous tone: as Full Tone");
+}
+
+#[test]
+fn document_library_uses_the_most_used_swatches_exactly() {
+    let swatches = vec![[255, 0, 0], [0, 255, 0], [0, 0, 255], [255, 255, 0], [0, 0, 0], [255, 255, 255]];
+    let p = |colors| TraceParams {
+        mode: Mode::Color,
+        palette: Palette::DocumentLibrary,
+        colors,
+        swatches: swatches.clone(),
+        noise: 4,
+        ..TraceParams::default()
+    };
+    let hard = Raster::from_fn(100, 100, |x, y| match (x < 50, y < 50) {
+        (true, true) => [220, 30, 30, 255],
+        (false, true) => [30, 200, 40, 255],
+        (true, false) => [30, 40, 210, 255],
+        (false, false) => [240, 220, 20, 255],
+    });
+    let res = trace(&hard, &p(6));
+    let mut got = res.palette.clone();
+    got.sort_unstable();
+    assert_eq!(got, [[0, 0, 255], [0, 255, 0], [255, 0, 0], [255, 255, 0]], "the nearest swatch of each colour, as it is");
+    assert!(res.paths.iter().all(|t| swatches.contains(&t.color)));
+    // At most `colors` of them: the ones the most pixels are nearest to.
+    let two = trace(&hard, &p(2)).palette;
+    assert!(two.len() <= 2 && two.iter().all(|c| swatches.contains(c)), "{two:?}");
+    // Without library colours, it traces as Limited.
+    let none = TraceParams { swatches: vec![], ..p(4) };
+    assert_eq!(trace(&hard, &none).palette.len(), 4);
+}
+
+fn strokes(fills: bool) -> TraceParams {
+    TraceParams { strokes: true, fills, stroke_width: 6.0, noise: 4, ..bw() }
+}
+
+/// Endpoints (first and last anchor) of each open subpath of the stroked paths.
+fn stroked(res: &TraceResult) -> Vec<(&TracedPath, &vectorcraft_geom::SubPath)> {
+    res.paths.iter().filter(|p| p.stroke.is_some()).flat_map(|p| p.path.subpaths.iter().map(move |s| (p, s))).collect()
+}
+
+#[test]
+fn a_thin_line_traces_as_one_stroked_centre_line() {
+    // A 3 px wide diagonal line from (20, 20) to (180, 100).
+    let img = Raster::from_fn(200, 120, |x, y| {
+        let (px, py) = (x as f64 + 0.5, y as f64 + 0.5);
+        let t = (((px - 20.0) * 160.0 + (py - 20.0) * 80.0) / (160.0f64.powi(2) + 80.0f64.powi(2))).clamp(0.0, 1.0);
+        let (cx, cy) = (20.0 + 160.0 * t, 20.0 + 80.0 * t);
+        if (px - cx).hypot(py - cy) <= 1.5 { BLACK } else { WHITE }
+    });
+    let res = trace(&img, &strokes(true));
+    assert_eq!(res.paths.len(), 1, "{:?}", res.paths.iter().map(|p| p.stroke).collect::<Vec<_>>());
+    let p = &res.paths[0];
+    let width = p.stroke.expect("stroked");
+    assert!((2.0..=4.0).contains(&width), "width {width}");
+    assert_eq!(p.path.subpaths.len(), 1);
+    let sp = &p.path.subpaths[0];
+    assert!(!sp.closed);
+    let (a, b) = (sp.anchors[0].p, sp.anchors[sp.anchors.len() - 1].p);
+    let (a, b) = if a.x < b.x { (a, b) } else { (b, a) };
+    assert!(a.distance(Point::new(20.0, 20.0)) < 3.0 && b.distance(Point::new(180.0, 100.0)) < 3.0, "{a:?} … {b:?}");
+    // A straight line: a few anchors, all on it.
+    assert!(sp.anchors.len() <= 4, "{} anchors", sp.anchors.len());
+    // Without Create Strokes, the same line is a filled outline.
+    let filled = trace(&img, &bw());
+    assert!(filled.paths.iter().all(|p| p.stroke.is_none()) && filled.paths[0].path.subpaths[0].closed);
+}
+
+#[test]
+fn a_thin_ring_traces_as_a_closed_centre_line() {
+    let img = Raster::from_fn(120, 120, |x, y| {
+        let d = (x as f64 + 0.5 - 60.0).hypot(y as f64 + 0.5 - 60.0);
+        if (d - 40.0).abs() <= 1.5 { BLACK } else { WHITE }
+    });
+    let res = trace(&img, &strokes(true));
+    let lines = stroked(&res);
+    assert_eq!(lines.len(), 1, "one ring");
+    let sp = lines[0].1;
+    assert!(sp.closed);
+    let len = PathData::single(sp.clone()).length();
+    let want = std::f64::consts::TAU * 40.0;
+    assert!((len - want).abs() / want < 0.05, "length {len} vs {want}");
+}
+
+#[test]
+fn wide_areas_stay_filled_and_lines_cross_at_junctions() {
+    // A disc (r = 20) and, apart from it, a plus sign of 3 px wide bars.
+    let img = Raster::from_fn(200, 100, |x, y| {
+        let (px, py) = (x as f64 + 0.5, y as f64 + 0.5);
+        let disc = (px - 50.0).hypot(py - 50.0) <= 20.0;
+        let plus = ((px - 150.0).abs() <= 1.5 && (20.0..=80.0).contains(&py)) || ((py - 50.0).abs() <= 1.5 && (120.0..=180.0).contains(&px));
+        if disc || plus { BLACK } else { WHITE }
+    });
+    let res = trace(&img, &strokes(true));
+    let fills: Vec<_> = res.paths.iter().filter(|p| p.stroke.is_none()).collect();
+    assert_eq!(fills.len(), 1, "the disc");
+    let a = net_area(&fills[0].path);
+    assert!((a - std::f64::consts::PI * 400.0).abs() < 60.0, "disc area {a}");
+    let lines = stroked(&res);
+    assert!((2..=4).contains(&lines.len()), "{} centre lines", lines.len());
+    // The centre lines stop about half a width short of each end of the bars (their round caps
+    // cover it).
+    let total: f64 = lines.iter().map(|(_, s)| PathData::single((*s).clone()).length()).sum();
+    assert!((106.0..=120.0).contains(&total), "both bars' length: {total}");
+    let ends: Vec<Point> = lines.iter().flat_map(|(_, s)| [s.anchors[0].p, s.anchors[s.anchors.len() - 1].p]).collect();
+    for want in [Point::new(150.0, 20.0), Point::new(150.0, 80.0), Point::new(120.0, 50.0), Point::new(180.0, 50.0)] {
+        assert!(ends.iter().any(|e| e.distance(want) < 4.0), "a line ends near {want:?}: {ends:?}");
+    }
+    // Strokes only: the disc is outlined.
+    let res = trace(&img, &strokes(false));
+    assert!(res.paths.iter().all(|p| p.stroke.is_some()));
+    assert!(res.paths.iter().any(|p| p.stroke == Some(1.0) && p.path.subpaths[0].closed), "the disc's outline");
+}
+
+#[test]
+fn create_settings_parse_with_defaults() {
+    let p: TraceParams = serde_json::from_value(serde_json::json!({ "strokes": true, "strokeWidth": 4 })).unwrap();
+    assert!(p.fills && p.strokes && p.stroke_width == 4.0);
+    let d = TraceParams::default();
+    assert!(d.fills && !d.strokes && d.stroke_width == 10.0);
+}
+
+#[test]
+fn create_strokes_survives_noise_and_tiny_images() {
+    let mut seed = 0x9E37_79B9_7F4A_7C15u64;
+    let mut next = move || {
+        seed ^= seed << 13;
+        seed ^= seed >> 7;
+        seed ^= seed << 17;
+        seed
+    };
+    let noise: Vec<u8> = (0..120 * 120).flat_map(|_| if next() % 3 == 0 { BLACK } else { WHITE }).collect();
+    let noise = Raster::new(120, 120, noise);
+    for img in [noise, Raster::from_fn(1, 1, |_, _| BLACK), Raster::from_fn(3, 2, |x, _| if x == 1 { BLACK } else { WHITE })] {
+        for (fills, width) in [(true, 1.0), (false, 4.0), (true, 100.0)] {
+            for noise in [0, 1, 4] {
+                let p = TraceParams { strokes: true, fills, stroke_width: width, noise, ..TraceParams::default() };
+                for t in trace(&img, &p).paths {
+                    assert!(t.stroke.is_none_or(|w| w.is_finite() && w >= 1.0), "{:?}", t.stroke);
+                }
+            }
+        }
+    }
+}

crates/ui-egui/src/canvas.rs

@@ -69,9 +69,17 @@ enum Drag {
         center: Point,
         middle: bool,
     },
+    /// A Zoom tool drag without Animated Zoom: the area to zoom to.
     ZoomBox {
         start: Pos2,
     },
+    /// A Zoom tool press with Animated Zoom ([`animated_zoom`]): dragged sideways it zooms about
+    /// `start`, held still (for `held` seconds so far) it zooms on, else it's a click.
+    ZoomScrub {
+        start: Pos2,
+        held: f32,
+        moved: bool,
+    },
     RotateView {
         start_angle: f64,
         start_rot: f64,
@@ -221,6 +229,9 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
     // View › Pixel Preview: the art as it rasterizes, one pixel per point, while a document pixel
     // is bigger than a screen pixel (below that the screen render already shows it).
     let pixel = (app.ui.view.pixel_preview && v.zoom * ppp as f64 > 1.0).then(|| pixel_region(&xf)).flatten();
+    // File Handling › Display Bitmaps as Anti-aliased Images in Pixel Preview: off, images show
+    // their pixels as they rasterize, hard-edged.
+    let smooth_images = pixel.is_none() || app.session.prefs.anti_aliased_bitmaps;
     let key = CacheKey {
         doc: st.uid as usize,
         revision: st.revision,
@@ -237,6 +248,7 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
         anti_alias: app.session.prefs.anti_aliased_artwork,
         placed: vectorcraft_render::placed_document::generation(),
         pixel,
+        smooth_images,
     };
     // Placed documents' bitmaps are being made: draw again when they are ready.
     if vectorcraft_render::placed_document::busy() {
@@ -284,6 +296,8 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
             // pattern tiles stay smooth), as in Illustrator.
             anti_alias: if app.session.prefs.anti_aliased_artwork { vectorcraft_render::AntiAlias::Art } else { vectorcraft_render::AntiAlias::None },
             progressive_placed: true,
+            trace_views: true,
+            smooth_images,
             ..opts
         };
         // Light documents render synchronously (no lag vs overlays); heavy ones go to the worker.
@@ -437,15 +451,18 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
             }
             // Caps Lock gives precise (crosshair) cursors, like Illustrator; env opt-out for system cursors.
             let custom = std::env::var_os("VECTORCRAFT_SYSTEM_CURSORS").is_none();
+            // User Interface › Scale Cursor Proportional to UI: the glyphs grow with UI Scaling;
+            // off, they keep their size.
+            let ui_scale = if app.session.prefs.scale_cursor_with_ui { 1.0 } else { ui.ctx().zoom_factor() };
             match ui.input(|i| i.pointer.hover_pos()) {
                 // An OS cursor: the system moves it at once, where a painted one trails the pointer
                 // (#444). The system cursor stands in for cursors without a glyph.
                 Some(_) if custom && crate::cursors::OS_CURSORS => {
-                    let ppp = ui.ctx().native_pixels_per_point().unwrap_or_else(|| ui.ctx().pixels_per_point());
+                    let ppp = ui.ctx().pixels_per_point() / ui_scale;
                     ui.ctx().set_cursor_image(app.canvas.cursors.get(c, ppp));
                     cursor_icon(c)
                 }
-                Some(hp) if custom && crate::cursors::paint(&painter, c, hp) => egui::CursorIcon::None,
+                Some(hp) if custom && crate::cursors::paint(&painter, c, hp, 1.0 / ui_scale) => egui::CursorIcon::None,
                 _ => cursor_icon(c),
             }
         } else {
@@ -515,17 +532,15 @@ fn handle_input(app: &mut VectorcraftApp, ui: &Ui, resp: &egui::Response, rect:
         prev.is_some_and(|prev| prev != m)
     });
 
-    // Zoom around the pointer, or scroll ([`wheel`]).
+    // Zoom around the pointer, and scroll ([`wheel`]): fingers pinching on a touch screen may also
+    // slide.
     if resp.hovered() {
-        if (factor - 1.0).abs() > 1e-6 {
-            if let (Some(p), Some(vm)) = (hover, app.view_mut()) {
-                let before = xf.to_doc(p);
-                vm.zoom = (vm.zoom * factor).clamp(0.0313, 640.0);
-                let nx = Xf { rect, zoom: vm.zoom, center: vm.center, rot: vm.rotation.to_radians() };
-                let after = nx.to_doc(p);
-                vm.center += before - after;
-            }
-        } else if scroll != egui::Vec2::ZERO
+        if (factor - 1.0).abs() > 1e-6
+            && let (Some(p), Some(vm)) = (hover, app.view_mut())
+        {
+            zoom_about(vm, rect, p, vm.zoom * factor);
+        }
+        if scroll != egui::Vec2::ZERO
             && let Some(vm) = app.view_mut()
         {
             let d = Xf { rect, zoom: vm.zoom, center: vm.center, rot: vm.rotation.to_radians() }.delta_to_doc(scroll);
@@ -549,7 +564,7 @@ fn handle_input(app: &mut VectorcraftApp, ui: &Ui, resp: &egui::Response, rect:
         ui.ctx().memory_mut(|mem| mem.stop_text_input());
         app.ui.flyout = None;
         let d = if zoom_mode {
-            Drag::ZoomBox { start: p }
+            if animated_zoom(&app.session.prefs) { Drag::ZoomScrub { start: p, held: 0.0, moved: false } } else { Drag::ZoomBox { start: p } }
         } else if pan_mode {
             Drag::Pan { start: p, center: v.center, middle: false }
         } else if tool == "rotateView" {
@@ -596,7 +611,26 @@ fn handle_input(app: &mut VectorcraftApp, ui: &Ui, resp: &egui::Response, rect:
                         vm.rotation = vectorcraft_geom::normalize_deg(deg);
                     }
                 }
-                Drag::ZoomBox { .. } | Drag::Art | Drag::Gesture => {}
+                Drag::ZoomBox { start } => marquee(ui.painter(), egui::Rect::from_two_pos(start, p)),
+                Drag::ZoomScrub { start, held, moved } => {
+                    let dt = ui.input(|i| i.unstable_dt).min(0.25);
+                    let (held, moved) = (held + dt, moved || (p - start).length() > SCRUB_SLOP);
+                    // Dragged sideways it zooms with the pointer, held still it zooms on (Alt: out).
+                    let exponent = if moved {
+                        f64::from(pointer.delta().x) * SCRUB_ZOOM
+                    } else if held > HOLD_DELAY {
+                        f64::from(dt) * HOLD_ZOOM * if m.alt { -1.0 } else { 1.0 }
+                    } else {
+                        0.0
+                    };
+                    if exponent != 0.0
+                        && let Some(vm) = app.view_mut()
+                    {
+                        zoom_about(vm, rect, start, vm.zoom * exponent.exp());
+                    }
+                    ui.data_mut(|dd| dd.insert_temp(drag_id(), Drag::ZoomScrub { start, held, moved }));
+                }
+                Drag::Art | Drag::Gesture => {}
                 Drag::Tool if drag_art_out(app, ui, resp, p, view) => {
                     ui.data_mut(|dd| dd.insert_temp(drag_id(), Drag::Art));
                 }
@@ -629,13 +663,17 @@ fn handle_input(app: &mut VectorcraftApp, ui: &Ui, resp: &egui::Response, rect:
                             vm.center = Point::new((a.x + b.x) / 2.0, (a.y + b.y) / 2.0);
                             vm.zoom = (rect.width() as f64 / (b.x - a.x)).min(rect.height() as f64 / (b.y - a.y)).clamp(0.0313, 640.0);
                         } else {
-                            let before = xf.to_doc(p);
-                            vm.zoom = crate::state::next_zoom(vm.zoom, !m.alt);
-                            let nx = Xf { rect, zoom: vm.zoom, center: vm.center, rot: vm.rotation.to_radians() };
-                            vm.center += before - nx.to_doc(p);
+                            zoom_about(vm, rect, p, crate::state::next_zoom(vm.zoom, !m.alt));
                         }
                     }
                 }
+                // A click (not held, not dragged) steps the zoom as with the marquee.
+                Drag::ZoomScrub { held, moved: false, .. } if held <= HOLD_DELAY => {
+                    if let Some(vm) = app.view_mut() {
+                        zoom_about(vm, rect, p, crate::state::next_zoom(vm.zoom, !m.alt));
+                    }
+                }
+                Drag::ZoomScrub { .. } => {}
                 Drag::Tool => {
                     let ev = PointerEvent { kind: PointerKind::Up, pos: xf.to_doc(p), mods: mods(m, space), pressure: pen_pressure(ui, false) };
                     dispatch(app, &ev, view);
@@ -671,14 +709,46 @@ fn handle_input(app: &mut VectorcraftApp, ui: &Ui, resp: &egui::Response, rect:
 
 /// How much one point of wheel motion zooms (as `exp(points × WHEEL_ZOOM)`).
 const WHEEL_ZOOM: f64 = 0.01;
+/// Animated Zoom: how much one point of sideways drag zooms (100 points to the right double it).
+const SCRUB_ZOOM: f64 = std::f64::consts::LN_2 / 100.0;
+/// Animated Zoom: how far the pointer moves before a press is a drag, in points.
+const SCRUB_SLOP: f32 = 3.0;
+/// Animated Zoom: how long a press is held still before it zooms on, in seconds…
+const HOLD_DELAY: f32 = 0.3;
+/// …and how fast it zooms then (as `exp(seconds × HOLD_ZOOM)`: twice as close each second).
+const HOLD_ZOOM: f64 = std::f64::consts::LN_2;
 
-/// What the wheel and a pinch did over the canvas this frame: a zoom factor (about the pointer)
-/// and a scroll (screen points the content moves). The wheel scrolls, Cmd- and Alt-wheel (Option
+/// Performance › Animated Zoom, which needs GPU Performance as in Illustrator: the Zoom tool zooms
+/// as it is dragged sideways or held, instead of zooming to the area dragged across.
+pub(crate) fn animated_zoom(p: &vectorcraft_engine::Prefs) -> bool {
+    p.animated_zoom && p.gpu_performance
+}
+
+/// Zoom view `vm` of the canvas `rect` to `zoom` (clamped to the zoom range), keeping the document
+/// point under screen point `p` where it is.
+fn zoom_about(vm: &mut View, rect: egui::Rect, p: Pos2, zoom: f64) {
+    let before = Xf::new(rect, vm).to_doc(p);
+    vm.zoom = zoom.clamp(0.0313, 640.0);
+    vm.center += before - Xf::new(rect, vm).to_doc(p);
+}
+
+/// A dashed marquee around screen rectangle `r`.
+fn marquee(p: &egui::Painter, r: egui::Rect) {
+    let pts = [r.left_top(), r.right_top(), r.right_bottom(), r.left_bottom(), r.left_top()];
+    for w in pts.windows(2) {
+        p.extend(Shape::dashed_line(&[w[0], w[1]], Stroke::new(1.0, Color32::from_gray(90)), 3.0, 3.0));
+    }
+}
+
+/// What the wheel, a pinch and a two-finger drag on a touch screen did over the canvas this frame:
+/// a zoom factor (about the pointer) and a scroll (screen points the content moves). The wheel scrolls, Cmd- and Alt-wheel (Option
 /// on the Mac) zoom. With General › Zoom with Mouse Wheel (`wheel_zooms`) the wheel and Alt-wheel
 /// zoom, Shift-wheel scrolls up and down and Cmd/Ctrl-wheel sideways. `line` and `page`: points
 /// per wheel line and page. `alt_turn`: the last wheel turn was an Alt-wheel one (kept by the
 /// caller across frames).
 fn wheel(i: &egui::InputState, wheel_zooms: bool, line: f32, page: f32, alt_turn: &mut bool) -> (f64, egui::Vec2) {
+    // Fingers on a touch screen pan the content with them (a trackpad sends scrolls instead).
+    let pan = i.multi_touch().map_or(egui::Vec2::ZERO, |t| t.translation_delta);
     if !wheel_zooms {
         // egui makes Cmd-wheel (and a pinch) its zoom and the rest a scroll it spreads over a few
         // frames: the rest of an Alt-wheel turn zooms too, however soon Alt is let go.
@@ -687,14 +757,14 @@ fn wheel(i: &egui::InputState, wheel_zooms: bool, line: f32, page: f32, alt_turn
         }
         let (zoom, scroll) = (f64::from(i.zoom_delta()), i.smooth_scroll_delta);
         return if *alt_turn && scroll != egui::Vec2::ZERO {
-            (zoom * (f64::from(scroll.x + scroll.y) * WHEEL_ZOOM).exp(), egui::Vec2::ZERO)
+            (zoom * (f64::from(scroll.x + scroll.y) * WHEEL_ZOOM).exp(), pan)
         } else {
-            (zoom, scroll)
+            (zoom, scroll + pan)
         };
     }
     // The wheel events themselves: egui's own handling turns Cmd-wheel into a zoom.
     let mut zoom = i.multi_touch().map_or(1.0, |t| f64::from(t.zoom_delta));
-    let mut scroll = egui::Vec2::ZERO;
+    let mut scroll = pan;
     for e in &i.events {
         match e {
             egui::Event::MouseWheel { unit, delta, modifiers, .. } => {
@@ -1630,13 +1700,7 @@ fn names_an_artboard(text: &str) -> bool {
 fn draw_overlays(p: &egui::Painter, xf: &Xf, overlays: &[Overlay], t: &Tokens, look: HandleLook) {
     for o in overlays {
         match o {
-            Overlay::Marquee(r) => {
-                let sr = xf.rect_to_screen(*r);
-                let pts = [sr.left_top(), sr.right_top(), sr.right_bottom(), sr.left_bottom(), sr.left_top()];
-                for w in pts.windows(2) {
-                    p.extend(Shape::dashed_line(&[w[0], w[1]], Stroke::new(1.0, Color32::from_gray(90)), 3.0, 3.0));
-                }
-            }
+            Overlay::Marquee(r) => marquee(p, xf.rect_to_screen(*r)),
             Overlay::Path { path, color, width, dashed } => {
                 let s = Stroke::new(*width, c32(*color));
                 if *dashed {
@@ -1718,6 +1782,7 @@ fn home(app: &mut VectorcraftApp, ui: &mut Ui, rect: egui::Rect) {
             app.run("file.open", json!({})).ok();
         }
     });
+    recent(app, ui);
     ui.add_space(28.0);
     ui.label(egui::RichText::new(tl!("Quickly start a new file")).font(theme::semibold(14.0)).color(t.text));
     ui.add_space(10.0);
@@ -1738,6 +1803,35 @@ fn home(app: &mut VectorcraftApp, ui: &mut Ui, rect: egui::Rect) {
     crate::community::links(app, ui);
 }
 
+/// The Home screen's Recent Files (#663): the first of File › Open Recent Files, each its name and
+/// folder; a click opens it. Nothing when there are none.
+fn recent(app: &mut VectorcraftApp, ui: &mut Ui) {
+    const SHOWN: usize = 6;
+    let files: Vec<String> = crate::io::recent_files(app).iter().take(SHOWN).cloned().collect();
+    if files.is_empty() {
+        return;
+    }
+    let t = Tokens::get(ui.ctx());
+    ui.add_space(28.0);
+    ui.label(egui::RichText::new(tl!("Recent Files")).font(theme::semibold(14.0)).color(t.text));
+    ui.add_space(8.0);
+    for path in files {
+        let p = std::path::Path::new(&path);
+        let name = p.file_name().map_or_else(|| path.clone(), |n| n.to_string_lossy().into_owned());
+        let folder = p.parent().map(|f| f.to_string_lossy().into_owned()).unwrap_or_default();
+        ui.horizontal(|ui| {
+            crate::icons::icon(ui, "history", 16.0, t.icon);
+            let r = ui.add(egui::Button::new(egui::RichText::new(&name).color(t.accent).size(13.0)).frame(false)).on_hover_text(&path);
+            ui.add(egui::Label::new(egui::RichText::new(&folder).size(12.0).color(t.text_dim)).truncate());
+            if r.clicked()
+                && let Err(e) = crate::io::open_path(app, &path)
+            {
+                app.status(e);
+            }
+        });
+    }
+}
+
 fn kurbo_flatten(p: &BezPath, tol: f64, f: &mut impl FnMut(PathEl)) {
     vectorcraft_geom::kurbo::flatten(p.elements().iter().copied(), tol, f);
 }
@@ -2375,6 +2469,28 @@ mod tests {
         assert!(partial(&alphas(&mut app).expect("re-rendered")) > 50, "smooth again");
     }
 
+    /// File Handling › Display Bitmaps as Anti-aliased Images in Pixel Preview (#394): off, Pixel
+    /// Preview draws images with each pixel taking its nearest image pixel; on, smoothly, as the
+    /// canvas always does out of Pixel Preview.
+    #[test]
+    fn pixel_preview_smooths_bitmaps_only_when_asked() {
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.session.execute("file.new", &json!({"width": 400, "height": 300})).unwrap();
+        app.canvas.worker_started = true; // render on this thread
+        let ctx = egui::Context::default();
+        let smooth = |app: &mut VectorcraftApp| {
+            let (_, mut delta) = frame_output(app, &ctx);
+            delta.clear();
+            app.canvas.key.as_ref().map(|k| k.smooth_images).unwrap()
+        };
+        assert!(smooth(&mut app), "out of Pixel Preview");
+        app.ui.view.pixel_preview = true;
+        app.view_mut().unwrap().zoom = 8.0;
+        assert!(!smooth(&mut app), "Pixel Preview, off by default");
+        app.run("prefs.set", json!({"key": "antiAliasedBitmaps", "value": true})).unwrap();
+        assert!(smooth(&mut app), "Pixel Preview, on");
+    }
+
     /// Guides & Grid › Show Pixel Grid (Above 600% Zoom) (#394): in Pixel Preview at 600% zoom and
     /// above, a line at every document pixel over the art; none below 600%, out of Pixel Preview,
     /// or with the option off.
@@ -2657,6 +2773,107 @@ mod tests {
         assert!((zoom - 1.0).abs() < 1e-9 && scroll.x < -1.0 && scroll.y == 0.0, "on: Cmd-wheel scrolls sideways ({zoom}, {scroll:?})");
     }
 
+    /// Two fingers dragged together on a touch screen pan the canvas with them, under either
+    /// Zoom with Mouse Wheel setting, and draw nothing (#449).
+    #[test]
+    fn two_fingers_dragged_together_pan_the_canvas() {
+        for wheel_zooms in [false, true] {
+            let mut app = VectorcraftApp::new(Session::new(), Default::default());
+            app.session.execute("file.new", &json!({"width": 400, "height": 300})).unwrap();
+            app.session.execute("prefs.set", &json!({"key": "zoomWithMouseWheel", "value": wheel_zooms})).unwrap();
+            app.select_tool("rectangle");
+            let ctx = egui::Context::default();
+            frame(&mut app, &ctx, vec![]);
+            let c = app.canvas_rect.unwrap().center();
+            let touch = |n: u64, phase, pos| egui::Event::Touch { device_id: egui::TouchDeviceId(1), id: egui::TouchId(n), phase, pos, force: None };
+            let fingers = |phase, d: egui::Vec2| vec![touch(1, phase, c - vec2(40.0, 0.0) + d), touch(2, phase, c + vec2(40.0, 0.0) + d)];
+            let before = *app.view().unwrap();
+            // egui-winit moves the pointer with the first finger, as here.
+            frame(&mut app, &ctx, vec![egui::Event::PointerMoved(c - vec2(40.0, 0.0))]);
+            frame(&mut app, &ctx, fingers(egui::TouchPhase::Start, Vec2::ZERO));
+            for k in 1..=3 {
+                frame(&mut app, &ctx, fingers(egui::TouchPhase::Move, vec2(10.0, 8.0) * k as f32));
+            }
+            frame(&mut app, &ctx, fingers(egui::TouchPhase::End, vec2(30.0, 24.0)));
+            let after = *app.view().unwrap();
+            let moved = (after.center - before.center) * after.zoom;
+            assert!((after.zoom / before.zoom - 1.0).abs() < 1e-9, "no zoom: {wheel_zooms}");
+            assert!((moved.x + 30.0).abs() < 0.5 && (moved.y + 24.0).abs() < 0.5, "the content follows the fingers ({wheel_zooms}): {moved:?}");
+            assert_eq!(app.session.active().unwrap().doc.layers[0].children().unwrap().len(), 0, "nothing drawn");
+        }
+    }
+
+    /// Performance › Animated Zoom (#394): the Zoom tool dragged sideways zooms about where it was
+    /// pressed (right in, left out), held still it zooms on, and a click still steps. Off, or with
+    /// GPU Performance off, a drag zooms to the area dragged across.
+    #[test]
+    fn animated_zoom_scrubs_and_holds_else_the_zoom_tool_zooms_to_an_area() {
+        use egui::Event;
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.session.execute("file.new", &json!({"width": 400, "height": 300})).unwrap();
+        app.select_tool("zoom");
+        let ctx = egui::Context::default();
+        frame(&mut app, &ctx, vec![]);
+        let rect = app.canvas_rect.unwrap();
+        let at = rect.center() - vec2(100.0, 50.0);
+        let button = |pos, pressed| Event::PointerButton { pos, button: egui::PointerButton::Primary, pressed, modifiers: Default::default() };
+        // Press at `at`, move by `by` and hold for `frames` frames (a 60th of a second each), let go.
+        let press = |app: &mut VectorcraftApp, by: egui::Vec2, frames: usize| {
+            frame(app, &ctx, vec![Event::PointerMoved(at)]);
+            frame(app, &ctx, vec![button(at, true)]);
+            frame(app, &ctx, vec![Event::PointerMoved(at + by)]);
+            for _ in 0..frames {
+                frame(app, &ctx, vec![]);
+            }
+            frame(app, &ctx, vec![button(at + by, false)]);
+        };
+        let doc_at = |app: &VectorcraftApp, p: Pos2| Xf::new(rect, app.view().unwrap()).to_doc(p);
+        let pinned = doc_at(&app, at);
+        let z0 = app.view().unwrap().zoom;
+        press(&mut app, vec2(100.0, 0.0), 0);
+        let z1 = app.view().unwrap().zoom;
+        assert!((z1 / z0 - 2.0).abs() < 1e-6, "100 points right doubles the zoom: {z0} → {z1}");
+        assert!(doc_at(&app, at).distance(pinned) < 1e-6, "about the press");
+        press(&mut app, vec2(-100.0, 0.0), 0);
+        assert!((app.view().unwrap().zoom - z0).abs() < 1e-6, "and back to the left");
+        press(&mut app, vec2(0.0, 0.0), 0);
+        assert_eq!(app.view().unwrap().zoom, crate::state::next_zoom(z0, true), "a click steps");
+        let z2 = app.view().unwrap().zoom;
+        press(&mut app, vec2(0.0, 0.0), 40);
+        assert!(app.view().unwrap().zoom > z2 * 1.2, "held, it zooms on");
+        assert!(doc_at(&app, at).distance(pinned) < 1e-6, "about the press");
+        // Off (or without GPU Performance): the area dragged across fills the view.
+        for key in ["animatedZoom", "gpuPerformance"] {
+            app.run("prefs.reset", json!({})).unwrap();
+            app.run("prefs.set", json!({"key": key, "value": false})).unwrap();
+            app.view_mut().unwrap().zoom = z0;
+            press(&mut app, vec2(100.0, 50.0), 0);
+            let z = app.view().unwrap().zoom;
+            assert!((z - z0 * (rect.width() / 100.0).min(rect.height() / 50.0) as f64).abs() < 1e-6, "{key} off: {z0} → {z}");
+        }
+    }
+
+    /// User Interface › Large Tabs (#394): the document tabs are taller, so the canvas starts lower.
+    #[test]
+    fn large_tabs_make_the_document_tabs_taller() {
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.session.execute("file.new", &json!({"width": 400, "height": 300})).unwrap();
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        let canvas_top = |app: &mut VectorcraftApp| {
+            let raw = egui::RawInput { screen_rect: Some(egui::Rect::from_min_size(Pos2::ZERO, vec2(800.0, 600.0))), ..Default::default() };
+            let mut out = ctx.run_ui(raw, |ui| {
+                crate::chrome::doc_tabs(app, ui);
+                show(app, ui);
+            });
+            out.textures_delta.clear();
+            app.canvas_rect.unwrap().top()
+        };
+        let small = canvas_top(&mut app);
+        app.run("prefs.set", json!({"key": "largeTabs", "value": true})).unwrap();
+        assert_eq!(canvas_top(&mut app) - small, 9.0, "44 points instead of 35");
+    }
+
     #[test]
     fn cmd_space_zooms_and_space_pans_whatever_the_tool() {
         use egui::{Event, Modifiers};

crates/ui-egui/src/chrome.rs

@@ -319,10 +319,16 @@ fn tab_title(d: &vectorcraft_engine::DocState, zoom: f64, outline: bool) -> Stri
     format!("{}{} @ {} ({mode})", d.title(), if d.is_dirty() { "*" } else { "" }, zoom_label(zoom).replace('%', " %"))
 }
 
-/// Document tab strip: "Name* @ 66.67% (RGB/Preview)".
+/// Whether a document tab's × comes before its title (macOS) rather than after it (Windows,
+/// Linux and the web).
+const CLOSE_BEFORE_TITLE: bool = cfg!(target_os = "macos");
+
+/// Document tab strip: "Name* @ 66.67% (RGB/Preview)". User Interface › Large Tabs makes the tabs
+/// taller, with larger titles.
 pub fn doc_tabs(app: &mut VectorcraftApp, ui: &mut Ui) {
     let t = Tokens::get(ui.ctx());
-    let (strip, _) = ui.allocate_exact_size(vec2(ui.available_width(), 35.0), Sense::hover());
+    let (height, title_size) = if app.session.prefs.large_tabs { (44.0, 14.0) } else { (35.0, 12.5) };
+    let (strip, _) = ui.allocate_exact_size(vec2(ui.available_width(), height), Sense::hover());
     ui.painter().rect_filled(strip, 0.0, t.tab_strip);
     ui.painter().line_segment([strip.left_bottom(), strip.right_bottom()], Stroke::new(1.0, t.border));
     let mut x = strip.left();
@@ -334,7 +340,7 @@ pub fn doc_tabs(app: &mut VectorcraftApp, ui: &mut Ui) {
         let title = tab_title(d, zoom, app.ui.view.outline);
         // On the Home screen no tab is the current one.
         let is_active = Some(i) == active && app.ui.home.is_none();
-        let galley = ui.painter().layout_no_wrap(title, theme::semibold(12.5), if is_active { t.text_strong } else { t.text_dim });
+        let galley = ui.painter().layout_no_wrap(title, theme::semibold(title_size), if is_active { t.text_strong } else { t.text_dim });
         let w = galley.size().x + 50.0;
         let r = egui::Rect::from_min_size(egui::pos2(x, strip.top()), vec2(w, strip.height() - 1.0));
         let resp = ui.interact(r, ui.id().with(("tab", i)), Sense::click());
@@ -344,11 +350,13 @@ pub fn doc_tabs(app: &mut VectorcraftApp, ui: &mut Ui) {
             ui.painter().rect_filled(r, 0.0, t.hover.gamma_multiply(0.4));
         }
         ui.painter().line_segment([r.right_top(), r.right_bottom()], Stroke::new(1.5, t.border));
-        // × at the left like Illustrator.
-        let xr = egui::Rect::from_center_size(egui::pos2(r.left() + 16.0, r.center().y), vec2(12.0, 12.0));
+        // The × where each platform puts a tab's: before the title on macOS, after it elsewhere
+        // (#673).
+        let (x_center, title_left) = if CLOSE_BEFORE_TITLE { (r.left() + 16.0, r.left() + 32.0) } else { (r.right() - 16.0, r.left() + 14.0) };
+        let xr = egui::Rect::from_center_size(egui::pos2(x_center, r.center().y), vec2(12.0, 12.0));
         let xresp = ui.interact(xr.expand(3.0), ui.id().with(("tabx", i)), Sense::click());
         icons::paint(ui, "x", xr, if xresp.hovered() { t.text_strong } else { t.text });
-        ui.painter().galley(egui::pos2(r.left() + 32.0, r.center().y - galley.size().y / 2.0), galley, t.text);
+        ui.painter().galley(egui::pos2(title_left, r.center().y - galley.size().y / 2.0), galley, t.text);
         if xresp.clicked() {
             close = Some(i);
         } else if resp.clicked() {
@@ -517,6 +525,9 @@ pub fn status_bar(app: &mut VectorcraftApp, ui: &mut Ui) {
 
 /// Contextual hint for the active tool: segments of (text, bold). Keys in bold segments are
 /// written as shortcuts are ("Alt+Click"); [`hint_segments`] names them for the platform.
+/// The hint of the Zoom tool with Performance › Animated Zoom on.
+const ANIMATED_ZOOM_HINT: &str = "zoom.animated";
+
 fn hint_for(tool: &str) -> Option<&'static [(&'static str, bool)]> {
     Some(match tool {
         "selection" => &[
@@ -588,6 +599,16 @@ fn hint_for(tool: &str) -> Option<&'static [(&'static str, bool)]> {
             ("Drag", true),
             (" to zoom into an area", false),
         ],
+        ANIMATED_ZOOM_HINT => &[
+            ("Click", true),
+            (" to zoom in  |  ", false),
+            ("Alt+Click", true),
+            (" to zoom out  |  ", false),
+            ("Drag", true),
+            (" right or left to zoom in or out  |  ", false),
+            ("Hold", true),
+            (" to keep zooming", false),
+        ],
         "eyedropper" => &[
             ("Click", true),
             (" an object to copy its attributes  |  ", false),
@@ -674,8 +695,8 @@ fn hint_for(tool: &str) -> Option<&'static [(&'static str, bool)]> {
 /// can insist a complete language covers them.
 pub fn hint_strings() -> Vec<&'static str> {
     let mut v = Vec::new();
-    for tool in vectorcraft_tools::catalog::all_tools() {
-        for &(text, bold) in hint_for(tool.id).unwrap_or(&[]) {
+    for tool in vectorcraft_tools::catalog::all_tools().map(|t| t.id).chain([ANIMATED_ZOOM_HINT]) {
+        for &(text, bold) in hint_for(tool).unwrap_or(&[]) {
             let text = if bold { text.rsplit_once('+').map_or(text, |(_, k)| k) } else { text };
             if !text.is_empty() && !text.chars().all(|c| c.is_ascii_digit()) && !v.contains(&text) {
                 v.push(text);
@@ -729,7 +750,10 @@ pub fn hint_bar(app: &mut VectorcraftApp, ui: &mut Ui) {
                 ui.painter().text(r.center(), egui::Align2::CENTER_CENTER, "?", theme::semibold(11.0), t.text);
                 ui.add_space(6.0);
                 let mut job = egui::text::LayoutJob::default();
-                for (txt, bold) in hint_segments(app.session.tool_id()) {
+                let tool = app.session.tool_id();
+                // The Zoom tool's drag zooms to an area, or with Animated Zoom zooms as it goes.
+                let hint = if tool == "zoom" && crate::canvas::animated_zoom(&app.session.prefs) { ANIMATED_ZOOM_HINT } else { tool };
+                for (txt, bold) in hint_segments(hint) {
                     let font = if bold { theme::semibold(12.5) } else { egui::FontId::proportional(12.5) };
                     job.append(&txt, 0.0, egui::TextFormat { font_id: font, color: if bold { t.text_strong } else { t.text }, ..Default::default() });
                 }
@@ -764,6 +788,44 @@ mod tests {
         }
     }
 
+    /// A document tab's × sits where the platform puts it (#673): after the title on Windows,
+    /// Linux and the web, before it on macOS; clicking it closes that document.
+    #[test]
+    fn a_tabs_close_box_sits_where_the_platform_puts_it() {
+        let mut app = crate::VectorcraftApp::new(Session::new(), Default::default());
+        app.session.execute("file.new", &json!({"width": 100, "height": 100})).unwrap();
+        app.session.execute("file.new", &json!({"width": 100, "height": 100})).unwrap();
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        let screen = egui::Rect::from_min_size(egui::Pos2::ZERO, egui::vec2(1200.0, 200.0));
+        let frame = |app: &mut crate::VectorcraftApp, events: Vec<egui::Event>| {
+            let mut out = ctx.run_ui(egui::RawInput { screen_rect: Some(screen), events, ..Default::default() }, |ui| super::doc_tabs(app, ui));
+            out.textures_delta.clear();
+            let mut titles = vec![];
+            for c in &out.shapes {
+                // The titles, not the × icons.
+                if let egui::Shape::Text(t) = &c.shape
+                    && t.visual_bounding_rect().width() > 30.0
+                {
+                    titles.push(t.visual_bounding_rect());
+                }
+            }
+            titles.sort_by(|a, b| a.left().total_cmp(&b.left()));
+            titles
+        };
+        let titles = frame(&mut app, vec![]);
+        assert_eq!(titles.len(), 2, "{titles:?}");
+        // The first tab's ×: 20 pt past its title's end, or 16 pt before its start.
+        let first = titles[0];
+        let x = if super::CLOSE_BEFORE_TITLE { first.left() - 16.0 } else { first.right() + 20.0 };
+        let at = egui::pos2(x, first.center().y);
+        let press = |pressed| egui::Event::PointerButton { pos: at, button: egui::PointerButton::Primary, pressed, modifiers: Default::default() };
+        frame(&mut app, vec![egui::Event::PointerMoved(at), press(true)]);
+        frame(&mut app, vec![press(false)]);
+        assert_eq!(app.session.documents().len(), 1, "the × closed the first document");
+        assert!(super::CLOSE_BEFORE_TITLE == cfg!(target_os = "macos"));
+    }
+
     /// One headless frame of the status bar; returns the artboard navigator's buttons, left to
     /// right: first, previous, next, last.
     fn navigator(app: &mut crate::VectorcraftApp, ctx: &egui::Context, events: Vec<egui::Event>) -> Vec<egui::Rect> {
@@ -832,4 +894,33 @@ mod tests {
         s.execute("transparency.stopEditingOpacityMask", &json!({})).unwrap();
         assert!(title(&s).ends_with("(RGB/Preview)"));
     }
+
+    /// The Zoom tool's hint follows Performance › Animated Zoom (#394): a drag zooms as it goes,
+    /// or (off) zooms into the area dragged across.
+    #[test]
+    fn the_zoom_hint_follows_animated_zoom() {
+        fn texts(s: &egui::Shape, out: &mut String) {
+            match s {
+                egui::Shape::Text(t) => out.push_str(t.galley.text()),
+                egui::Shape::Vec(v) => v.iter().for_each(|s| texts(s, out)),
+                _ => {}
+            }
+        }
+        let mut app = crate::VectorcraftApp::new(Session::new(), Default::default());
+        app.select_tool("zoom");
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        let hint = |app: &mut crate::VectorcraftApp| {
+            let mut out = ctx.run_ui(egui::RawInput::default(), |ui| super::hint_bar(app, ui));
+            out.textures_delta.clear();
+            let mut shown = String::new();
+            out.shapes.iter().for_each(|c| texts(&c.shape, &mut shown));
+            shown
+        };
+        let on = hint(&mut app);
+        assert!(on.contains(" right or left to zoom in or out") && on.contains("Hold"), "{on}");
+        app.run("prefs.set", json!({"key": "animatedZoom", "value": false})).unwrap();
+        let off = hint(&mut app);
+        assert!(off.contains(" to zoom into an area") && !off.contains("Hold"), "{off}");
+    }
 }

crates/ui-egui/src/cursors.rs

@@ -288,10 +288,19 @@ fn glyph(c: Cursor, p: Pos2) -> Option<Vec<Shape>> {
     Some(std::mem::take(&mut ink.0))
 }
 
-/// Paint cursor `c` at `p` on the given (foreground) painter, where the window can't show it as an
-/// OS cursor ([`OS_CURSORS`]). Returns false for cursors that stay system cursors.
-pub fn paint(painter: &Painter, c: Cursor, p: Pos2) -> bool {
-    glyph(c, p).map(|shapes| painter.extend(shapes)).is_some()
+/// Paint cursor `c` at `p`, `scale` times its size, on the given (foreground) painter, where the
+/// window can't show it as an OS cursor ([`OS_CURSORS`]). Returns false for cursors that stay
+/// system cursors.
+pub fn paint(painter: &Painter, c: Cursor, p: Pos2, scale: f32) -> bool {
+    let place = egui::emath::TSTransform::new(p.to_vec2(), scale);
+    glyph(c, Pos2::ZERO)
+        .map(|shapes| {
+            painter.extend(shapes.into_iter().map(|mut s| {
+                s.transform(place);
+                s
+            }))
+        })
+        .is_some()
 }
 
 /// Does the window show the glyphs as OS cursors ([`Images`])? Not on macOS, which sizes a cursor
@@ -555,6 +564,43 @@ mod tests {
         assert!(off.platform_output.cursor_image.is_none());
     }
 
+    /// User Interface › Scale Cursor Proportional to UI (#394): off, the tool cursors keep their
+    /// size whatever the UI Scaling; on, they grow with it.
+    #[test]
+    fn tool_cursors_scale_with_the_ui_only_when_asked() {
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.run("file.new", json!({"width": 400, "height": 300})).unwrap();
+        app.run("prefs.set", json!({"key": "uiScaling", "value": 2.0})).unwrap();
+        let ctx = egui::Context::default();
+        for _ in 0..3 {
+            frame(&mut app, &ctx, vec![]);
+        }
+        assert_eq!(ctx.zoom_factor(), 2.0);
+        let over = app.canvas_rect.unwrap().center();
+        let shown =
+            |app: &mut VectorcraftApp, d: f32| frame(app, &ctx, vec![egui::Event::PointerMoved(over + vec2(d, 0.0))]).platform_output.cursor_image;
+        if OS_CURSORS {
+            assert_eq!(shown(&mut app, 0.0).unwrap(), app.canvas.cursors.get(Cursor::Arrow, 1.0).unwrap(), "off: its own size");
+            app.run("prefs.set", json!({"key": "scaleCursorWithUi", "value": true})).unwrap();
+            assert_eq!(shown(&mut app, 4.0).unwrap(), app.canvas.cursors.get(Cursor::Arrow, 2.0).unwrap(), "on: twice as big");
+        }
+        // Painted into the window (macOS, the web), the glyph is drawn at the scale asked for, its
+        // hotspot where the pointer is.
+        let painted = |scale: f32| {
+            let ctx = egui::Context::default();
+            let mut out = ctx.run_ui(egui::RawInput::default(), |ui| {
+                let layer = egui::LayerId::new(egui::Order::Tooltip, egui::Id::new("probe"));
+                assert!(paint(&ui.ctx().layer_painter(layer), Cursor::Arrow, pos2(100.0, 100.0), scale));
+            });
+            out.textures_delta.clear();
+            out.textures_delta.clear();
+            out.shapes.iter().fold(egui::Rect::NOTHING, |r, c| r.union(c.shape.visual_bounding_rect()))
+        };
+        let (full, half) = (painted(1.0), painted(0.5));
+        assert!((half.height() * 2.0 - full.height()).abs() < 1.5 && full.height() > 15.0, "{full:?} {half:?}");
+        assert!(full.contains(pos2(100.0, 100.0)) && half.contains(pos2(100.0, 100.0)), "{full:?} {half:?}");
+    }
+
     #[test]
     fn arrow_hotspot_is_tip() {
         let pts = arrow_points(pos2(10.0, 20.0));

crates/ui-egui/src/dialogs/command.rs

@@ -24,7 +24,6 @@ fn lengths(command: &str) -> &'static [&'static str] {
     match command {
         "graph.create" => &["width", "height"],
         "shape.flare" => &["diameter", "pathLength"],
-        "artboard.rearrange" => &["spacing"],
         "perspective.grid.set" => &["cell", "distance"],
         "object.repeat.options" => &["radius", "hSpacing", "vSpacing"],
         "text.areaOptions" => &["width", "height", "gutter", "inset", "firstBaselineMin"],

crates/ui-egui/src/dialogs/mod.rs

@@ -60,6 +60,7 @@ pub mod print;
 pub mod print_presets;
 mod psd_options;
 pub mod raster_effects;
+pub mod rearrange_artboards;
 pub mod recolor;
 mod recovery;
 pub mod saturate;
@@ -94,6 +95,7 @@ pub use export_for_screens::open as open_export_for_screens;
 pub(crate) use export_for_screens::{
     KIND as EXPORT_FOR_SCREENS, formats as screen_formats, open_assets as open_export_for_screens_assets, saved_rows as screen_saved_rows,
 };
+pub(crate) use new_document::preset_name;
 pub use new_document::{open as open_new_document, preset_card};
 pub use png_options::open as open_raster_options;
 pub use save_pdf::{open as open_save_pdf, open_preset as open_pdf_preset};
@@ -277,6 +279,7 @@ registry! {
     PerspectivePlane: [perspective_plane::KIND] => perspective_plane::SPEC,
     LayerOptions: [layer_options::KIND] => layer_options::SPEC,
     LayersPanelOptions: [layers_panel_options::KIND] => layers_panel_options::SPEC,
+    RearrangeArtboards: [rearrange_artboards::KIND] => rearrange_artboards::SPEC,
 }
 
 /// The button labels the shared dialog frame can show (OK, discard and the fixed Cancel/Close),

crates/ui-egui/src/dialogs/new_document.rs

@@ -190,7 +190,7 @@ fn show(app: &mut VectorcraftApp, ctx: &egui::Context) {
                 ui.vertical(|ui| {
                     ui.set_width(640.0);
                     ui.set_min_height(HEIGHT - 32.0);
-                    presets(app, ui, &mut d);
+                    b.create |= presets(app, ui, &mut d);
                 });
             });
             egui::Frame::NONE.fill(t.panel_darker).inner_margin(egui::Margin::same(18)).show(ui, |ui| {
@@ -205,8 +205,9 @@ fn show(app: &mut VectorcraftApp, ctx: &egui::Context) {
     b.finish(app, ctx, d);
 }
 
-/// The category tabs and the chosen category's preset cards.
-fn presets(app: &VectorcraftApp, ui: &mut egui::Ui, d: &mut Dialog) {
+/// The category tabs and the chosen category's preset cards: a click chooses one, a double-click
+/// also creates it (true then).
+fn presets(app: &VectorcraftApp, ui: &mut egui::Ui, d: &mut Dialog) -> bool {
     let t = Tokens::get(ui.ctx());
     let names: Vec<&str> = newdoc::category_names().collect();
     let cat = names.iter().position(|n| n.eq_ignore_ascii_case(&d.str("category"))).unwrap_or(0);
@@ -227,20 +228,24 @@ fn presets(app: &VectorcraftApp, ui: &mut egui::Ui, d: &mut Dialog) {
     if list.is_empty() {
         let hint = if cat == 1 { tl!("Presets you save with the Save Preset button appear here.") } else { tl!("Documents you create appear here.") };
         ui.label(egui::RichText::new(hint).color(t.text_dim));
-        return;
+        return false;
     }
+    let mut create = false;
     egui::ScrollArea::vertical().id_salt(("newdoc-presets", cat)).max_height(HEIGHT - 110.0).auto_shrink([false, false]).show(ui, |ui| {
         ui.horizontal_wrapped(|ui| {
             ui.spacing_mut().item_spacing = egui::vec2(12.0, 12.0);
             let (w, h, preset) = (d.f64("width", 0.0), d.f64("height", 0.0), d.str("preset"));
             for s in &list {
                 let selected = d.fields.contains_key(APPLIED) && s.name == preset && s.width == w && s.height == h;
-                if preset_card(ui, s, selected).clicked() {
+                let card = preset_card(ui, s, selected);
+                if card.clicked() || card.double_clicked() {
                     apply(d, s);
                 }
+                create |= card.double_clicked();
             }
         });
     });
+    create
 }
 
 /// Is `name` a built-in preset's? Those are ours (translated); Recent and Saved hold the names of
@@ -250,7 +255,7 @@ fn is_builtin_preset(name: &str) -> bool {
 }
 
 /// A preset's name as shown: a built-in one translated, the user's as it is.
-fn preset_name(name: &str) -> &str {
+pub(crate) fn preset_name(name: &str) -> &str {
     if is_builtin_preset(name) { tl!(name) } else { name }
 }
 
@@ -345,7 +350,7 @@ fn details(app: &mut VectorcraftApp, ui: &mut egui::Ui, d: &mut Dialog, b: &mut
     // Close and Create at the bottom right.
     ui.add_space((HEIGHT - (ui.cursor().top() - top) - 28.0).max(12.0));
     ui.allocate_ui_with_layout(egui::vec2(ui.available_width(), 28.0), egui::Layout::right_to_left(egui::Align::Center), |ui| {
-        b.create = widgets::primary_button(ui, tl!("Create")).clicked();
+        b.create |= widgets::primary_button(ui, tl!("Create")).clicked();
         ui.add_space(8.0);
         b.close = widgets::secondary_button(ui, tl!("Close")).clicked();
     });
@@ -441,17 +446,8 @@ fn choice(ui: &mut egui::Ui, d: &mut Dialog, key: &str, options: &[(Value, Strin
 
 /// The collapsible Advanced Options: Color Mode, Raster Effects and Preview Mode.
 fn advanced(ui: &mut egui::Ui, d: &mut Dialog, label: f32, field: f32) {
-    let t = Tokens::get(ui.ctx());
     let open = d.bool("advanced");
-    let resp = ui
-        .horizontal(|ui| {
-            let (r, _) = ui.allocate_exact_size(egui::vec2(14.0, 18.0), egui::Sense::hover());
-            crate::icons::paint(ui, if open { "chevron-down" } else { "chevron-right" }, r, t.icon);
-            ui.label(egui::RichText::new(tl!("Advanced Options")).color(t.text));
-        })
-        .response
-        .interact(egui::Sense::click());
-    if resp.clicked() {
+    if widgets::section_toggle(ui, tl!("Advanced Options"), open) {
         d.fields.insert("advanced".into(), json!(!open));
     }
     if !open {
@@ -567,7 +563,7 @@ fn show_more(app: &mut VectorcraftApp, ctx: &egui::Context) {
         ui.horizontal(|ui| {
             templates = widgets::secondary_button(ui, tl!("Templates…")).on_hover_text(tl!("New from Template")).clicked();
             ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
-                b.create = widgets::primary_button(ui, tl!("Create Document")).clicked();
+                b.create |= widgets::primary_button(ui, tl!("Create Document")).clicked();
                 ui.add_space(8.0);
                 // Cancel goes back to New Document.
                 if widgets::secondary_button(ui, tl!("Cancel")).clicked() {
@@ -619,6 +615,51 @@ mod tests {
         app.ui.dialog.as_ref().unwrap().fields.get(k).cloned().unwrap_or_default()
     }
 
+    /// A double-click on a preset card creates the document from it (#663); a click only chooses it.
+    #[test]
+    fn a_double_clicked_preset_creates_the_document() {
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.run("file.newDialog", json!({})).unwrap();
+        set(&mut app, "category", json!("Mobile"));
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        // Frames 50 ms apart, so two clicks a frame apart make a double-click.
+        let mut time = 0.0;
+        let mut run = |app: &mut VectorcraftApp, events| {
+            time += 0.05;
+            let screen_rect = Some(egui::Rect::from_min_size(egui::Pos2::ZERO, egui::vec2(1400.0, 1000.0)));
+            let raw = egui::RawInput { screen_rect, events, time: Some(time), ..Default::default() };
+            let mut out = ctx.run_ui(raw, |ui| crate::dialogs::show(app, ui.ctx()));
+            out.textures_delta.clear();
+            out
+        };
+        run(&mut app, vec![]);
+        // The first card of the category, found by its size line.
+        let card = |app: &mut VectorcraftApp, run: &mut dyn FnMut(&mut VectorcraftApp, Vec<egui::Event>) -> egui::FullOutput| {
+            let out = run(app, vec![]);
+            let mut texts = vec![];
+            fn walk(s: &egui::Shape, out: &mut Vec<(String, egui::Rect)>) {
+                match s {
+                    egui::Shape::Text(t) => out.push((t.galley.text().to_string(), t.visual_bounding_rect())),
+                    egui::Shape::Vec(v) => v.iter().for_each(|s| walk(s, out)),
+                    _ => {}
+                }
+            }
+            out.shapes.iter().for_each(|c| walk(&c.shape, &mut texts));
+            texts.into_iter().find(|(t, _)| t.starts_with("Phone 393")).map(|(_, r)| r.center()).unwrap()
+        };
+        let at = card(&mut app, &mut run);
+        let press = |pressed| egui::Event::PointerButton { pos: at, button: egui::PointerButton::Primary, pressed, modifiers: Default::default() };
+        run(&mut app, vec![egui::Event::PointerMoved(at), press(true)]);
+        run(&mut app, vec![press(false)]);
+        assert!(app.ui.dialog.is_some() && app.session.documents().is_empty(), "a click only chooses it");
+        assert!(field(&app, "preset").as_str().is_some_and(|p| p == "Phone 393×852"), "{:?}", field(&app, "preset"));
+        run(&mut app, vec![press(true)]);
+        run(&mut app, vec![press(false)]);
+        assert!(app.ui.dialog.is_none(), "the double-click created it: {:?}", app.ui.status);
+        assert_eq!(app.session.documents().len(), 1);
+    }
+
     #[test]
     fn a_preset_fills_the_details_and_create_makes_the_document() {
         let mut app = VectorcraftApp::new(Session::new(), Default::default());

crates/ui-egui/src/dialogs/rearrange_artboards.rs

@@ -0,0 +1,208 @@
+//! Object → Artboards → Rearrange All Artboards (also the Artboards panel's button and menu, and
+//! the Properties panel's Rearrange All): Layout (a grid by row or by column, one row or one
+//! column), Layout Order (left to right or right to left), Columns (Rows for a grid by column),
+//! Spacing and Move Artwork with Artboard, with the document's artboard count. OK runs
+//! `artboard.rearrange` as one undo step (#681).
+//!
+//! Fields: `layout` (`gridByRow` | `gridByColumn` | `row` | `column`), `order` (`leftToRight` |
+//! `rightToLeft`), `columns` (the rows of a grid by column), `spacing` (pt) and `moveArtwork`.
+
+use serde_json::{Value, json};
+use vectorcraft_engine::cmd::newdoc::ArtboardLayout;
+
+use super::{DialogSpec, form, run_and_close};
+use crate::state::Dialog;
+use crate::{VectorcraftApp, widgets};
+
+/// The dialog kind of Rearrange All Artboards.
+pub const KIND: &str = "rearrangeArtboards";
+
+const CMD: &str = "artboard.rearrange";
+
+/// Width of the label column.
+const LABEL_W: f32 = 96.0;
+
+pub(super) const SPEC: DialogSpec =
+    DialogSpec { heading: |_| tl!("Rearrange All Artboards").into(), body, confirm, min_width: 320.0, ..DialogSpec::FORM };
+
+/// The fields a fresh dialog starts with.
+pub fn fields() -> Value {
+    json!({"layout": "gridByRow", "order": "leftToRight", "columns": 2, "spacing": 20, "moveArtwork": true})
+}
+
+/// A layout's toggle: its tooltip and its artboards' cells (column, row) in their order, left to
+/// right.
+fn layout_glyph(l: ArtboardLayout) -> (&'static str, &'static [(u8, u8)]) {
+    match l {
+        ArtboardLayout::GridByRow => (tl!("Grid by Row"), &[(0, 0), (1, 0), (0, 1), (1, 1)]),
+        ArtboardLayout::GridByColumn => (tl!("Grid by Column"), &[(0, 0), (0, 1), (1, 0), (1, 1)]),
+        ArtboardLayout::Row => (tl!("Arrange by Row"), &[(0, 0), (1, 0), (2, 0)]),
+        ArtboardLayout::Column => (tl!("Arrange by Column"), &[(0, 0), (0, 1), (0, 2)]),
+    }
+}
+
+/// `cells` mirrored left to right when `rtl` (the order the layout toggles preview).
+fn mirrored(cells: &[(u8, u8)], rtl: bool) -> Vec<(u8, u8)> {
+    let last = cells.iter().map(|c| c.0).max().unwrap_or(0);
+    cells.iter().map(|&(x, y)| (if rtl { last - x } else { x }, y)).collect()
+}
+
+/// `artboard.rearrange` parameters from the fields.
+fn params(d: &Dialog) -> Value {
+    json!({
+        "layout": d.str("layout"), "order": d.str("order"), "columns": d.f64("columns", 2.0),
+        "spacing": d.f64("spacing", 20.0), "moveArtwork": d.bool("moveArtwork"),
+    })
+}
+
+fn body(app: &mut VectorcraftApp, ui: &mut egui::Ui, d: &mut Dialog) -> bool {
+    let unit = app.session.general_unit();
+    let n = app.session.active().map_or(0, |doc| doc.doc.artboards.len());
+    let layout = ArtboardLayout::parse(&d.str("layout")).unwrap_or_default();
+    let rtl = d.str("order") == "rightToLeft";
+    widgets::label_row(ui, tl!("Layout:"), LABEL_W, |ui| {
+        ui.spacing_mut().item_spacing.x = 2.0;
+        for l in ArtboardLayout::ALL {
+            let (tip, cells) = layout_glyph(l);
+            if widgets::layout_button(ui, &mirrored(cells, rtl), layout == l, tip) {
+                d.fields.insert("layout".into(), json!(l.id()));
+            }
+        }
+    });
+    ui.add_space(4.0);
+    widgets::label_row(ui, tl!("Layout Order:"), LABEL_W, |ui| {
+        ui.spacing_mut().item_spacing.x = 2.0;
+        // One column reads the same either way.
+        ui.add_enabled_ui(layout != ArtboardLayout::Column, |ui| {
+            for (value, cells, tip) in [
+                ("leftToRight", [(0, 0), (1, 0)], tl!("Change to Left-to-Right Layout")),
+                ("rightToLeft", [(1, 0), (0, 0)], tl!("Change to Right-to-Left Layout")),
+            ] {
+                if widgets::layout_button(ui, &cells, (value == "rightToLeft") == rtl, tip) {
+                    d.fields.insert("order".into(), json!(value));
+                }
+            }
+        });
+    });
+    ui.add_space(4.0);
+    // The rows of a grid by column; one row or column has no count to set.
+    let label = if layout == ArtboardLayout::GridByColumn { tl!("Rows:") } else { tl!("Columns:") };
+    widgets::label_row(ui, label, LABEL_W, |ui| {
+        let grid = matches!(layout, ArtboardLayout::GridByRow | ArtboardLayout::GridByColumn);
+        ui.add_enabled_ui(grid, |ui| {
+            let most = n.max(1) as f64;
+            if let Some(v) = widgets::spin_plain(ui, "rearrange-columns", d.f64("columns", 2.0), "", 0, 76.0, 1.0, 1.0, &[]) {
+                d.fields.insert("columns".into(), json!(v.round().clamp(1.0, most)));
+            }
+        });
+    });
+    ui.add_space(4.0);
+    widgets::label_row(ui, tl!("Spacing:"), LABEL_W, |ui| {
+        form::length(ui, d, "spacing", unit, 100.0);
+    });
+    ui.add_space(4.0);
+    widgets::label_row(ui, tl!("Options:"), LABEL_W, |ui| {
+        form::check(ui, d, "moveArtwork", tl!("Move Artwork with Artboard"));
+    });
+    ui.add_space(8.0);
+    widgets::dim_label(ui, &crate::i18n::fmt(tl!("Artboards: {n}"), &[("n", &n.to_string())]));
+    false
+}
+
+fn confirm(app: &mut VectorcraftApp, d: &Dialog) -> Result<Value, String> {
+    run_and_close(app, CMD, params(d))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use vectorcraft_engine::Session;
+
+    /// A frame of the open dialog with `events` → the texts painted. The dialog measures itself on
+    /// its first frame, so a fresh context needs two.
+    fn frame(app: &mut VectorcraftApp, ctx: &egui::Context, events: Vec<egui::Event>) -> Vec<String> {
+        let mut out = ctx.run_ui(egui::RawInput { events, ..Default::default() }, |ui| super::super::show(app, ui.ctx()));
+        out.textures_delta.clear();
+        out.shapes.iter().filter_map(|s| if let egui::epaint::Shape::Text(t) = &s.shape { Some(t.galley.text().to_string()) } else { None }).collect()
+    }
+
+    fn context() -> egui::Context {
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        ctx
+    }
+
+    fn origins(app: &VectorcraftApp) -> Vec<(f64, f64)> {
+        app.session.active().unwrap().doc.artboards.iter().map(|a| (a.rect.x0, a.rect.y0)).collect()
+    }
+
+    /// #681: the menu item opens the dialog with the artboard count; Columns reads Rows for a grid
+    /// by column; OK lays the artboards out right to left, as one undo step.
+    #[test]
+    fn opens_from_the_menu_and_rearranges_by_layout_and_order() {
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.run("file.new", json!({"width": 100, "height": 50, "artboards": 3})).unwrap();
+        // The menu item has no params of its own: it opens this dialog, not the generic one.
+        let (id, p) = crate::menus::click_target("Rearrange All Artboards…", CMD, &Value::Null);
+        crate::menus::invoke(&mut app, &id, p);
+        assert_eq!(app.ui.dialog.as_ref().map(|d| d.kind.as_str()), Some(KIND));
+        let ctx = context();
+        frame(&mut app, &ctx, vec![]);
+        let texts = frame(&mut app, &ctx, vec![]);
+        for want in ["Rearrange All Artboards", "Layout:", "Layout Order:", "Columns:", "Spacing:", "Move Artwork with Artboard", "Artboards: 3"] {
+            assert!(texts.iter().any(|t| t == want), "{want:?} in {texts:?}");
+        }
+        let d = app.ui.dialog.as_mut().unwrap();
+        d.fields.insert("layout".into(), json!("gridByColumn"));
+        let texts = frame(&mut app, &ctx, vec![]);
+        assert!(texts.iter().any(|t| t == "Rows:") && !texts.iter().any(|t| t == "Columns:"), "{texts:?}");
+        // One row, right to left, 10 pt apart.
+        let d = app.ui.dialog.as_mut().unwrap();
+        d.fields.insert("layout".into(), json!("row"));
+        d.fields.insert("order".into(), json!("rightToLeft"));
+        d.fields.insert("spacing".into(), json!(10));
+        frame(&mut app, &ctx, vec![]);
+        let undo = app.session.doc().unwrap().history.undo.len();
+        crate::dialogs::confirm(&mut app).unwrap();
+        assert!(app.ui.dialog.is_none());
+        assert_eq!(origins(&app), [(220.0, 0.0), (110.0, 0.0), (0.0, 0.0)]);
+        assert_eq!(app.session.doc().unwrap().history.undo.len(), undo + 1);
+    }
+
+    /// Clicking the layout and order toggles sets the fields (the toggles' rects from the frame).
+    #[test]
+    fn the_toggles_set_layout_and_order() {
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.run("file.new", json!({"width": 100, "height": 50, "artboards": 4})).unwrap();
+        app.run("ui.menuDialog", json!({ "command": CMD })).unwrap();
+        let ctx = context();
+        frame(&mut app, &ctx, vec![]);
+        frame(&mut app, &ctx, vec![]);
+        // The 26-point toggles, left to right then top to bottom: four layouts, then two orders.
+        let toggles: Vec<egui::Rect> = ctx.viewport(|vp| {
+            let mut r: Vec<egui::Rect> = vp
+                .prev_pass
+                .widgets
+                .layers()
+                .flat_map(|(_, w)| w.iter())
+                .filter(|w| w.sense.senses_click() && w.rect.width() == 26.0 && w.rect.height() == 26.0)
+                .map(|w| w.rect)
+                .collect();
+            r.sort_by(|a, b| a.top().total_cmp(&b.top()).then(a.left().total_cmp(&b.left())));
+            r
+        });
+        assert_eq!(toggles.len(), 6, "{toggles:?}");
+        for (i, key, want) in [(3, "layout", "column"), (1, "layout", "gridByColumn"), (5, "order", "rightToLeft")] {
+            let at = toggles[i].center();
+            let b = |pressed| egui::Event::PointerButton { pos: at, button: egui::PointerButton::Primary, pressed, modifiers: Default::default() };
+            frame(&mut app, &ctx, vec![egui::Event::PointerMoved(at), b(true)]);
+            frame(&mut app, &ctx, vec![b(false)]);
+            assert_eq!(app.ui.dialog.as_ref().unwrap().str(key), want);
+            // A frame for the order toggles to follow the layout (one column greys them).
+            frame(&mut app, &ctx, vec![]);
+        }
+        crate::dialogs::confirm(&mut app).unwrap();
+        // Two rows (Columns 2 reads Rows for a grid by column), the first column at the right.
+        assert_eq!(origins(&app), [(120.0, 0.0), (120.0, 70.0), (0.0, 0.0), (0.0, 70.0)]);
+    }
+}

crates/ui-egui/src/i18n/es.tsv

@@ -76,6 +76,7 @@
 	Add to Swatches	Agregar a muestras
 	Add Used Colors	Agregar colores usados
 	Additional Plug-ins Folder	Carpeta de plugins adicionales
+	Additional Fonts Folder	Carpeta de fuentes adicionales
 	Adjust Adjoining Width Points	Ajustar puntos de anchura contiguos
 	Adjust Color Balance…	Ajustar equilibrio de color…
 	Adjust Colors	Ajustar colores
@@ -202,6 +203,7 @@
 	Auto Size New Area Type	Ajustar automáticamente el tamaño del nuevo texto de área
 	Auto Spell Check	Revisión ortográfica automática
 	Auto-Collapse Iconic Panels	Contraer automáticamente los paneles de iconos
+	Show Tool Group Labels	Mostrar etiquetas de grupos de herramientas
 	Auto-Rotate (turn the paper to each artboard)	Rotar automáticamente (girar el papel según cada mesa de trabajo)
 	Automatic flatness	Lisura automática
 	Automatically	Automáticamente
@@ -1152,6 +1154,11 @@
 	Ignore	Ignorar
 	Ignore Artboards (all the art as one page)	Ignorar mesas de trabajo (toda la ilustración como una página)
 	Ignore White	Ignorar blanco
+	Palette:	Paleta:
+	Limited	Limitada
+	Full Tone	Tono completo
+	Document Library	Biblioteca del documento
+	Library:	Biblioteca:
 	Image	Imagen
 	Image Info	Información de imagen
 	Image Map:	Mapa de imagen:
@@ -1394,6 +1401,9 @@
 	Marks and Bleed	Marcas y sangrado
 	Marks and Bleeds	Marcas y sangrados
 	Match User Interface Brightness	Igualar brillo de la interfaz de usuario
+	Light Gray	Gris claro
+	Medium Gray	Gris medio
+	Dark Gray	Gris oscuro
 	Materials…	Materiales…
 	Matte	Mate
 	Matte:	Mate:
@@ -1566,6 +1576,9 @@
 	No text selected	No hay texto seleccionado
 	No Thumbnails	Sin miniaturas
 	Noise	Ruido
+	Create:	Crear:
+	Fills	Rellenos
+	Strokes	Trazos
 	Nonbreaking Hyphen	Guion de no separación
 	Nonbreaking Space	Espacio de no separación
 	None	Ninguno
@@ -1946,7 +1959,16 @@
 	Rating:	Clasificación:
 	Real World:	Mundo real:
 	Real-time Drawing and Editing	Dibujo y edición en tiempo real
-	Rearrange All Artboards (on the roadmap)	Reorganizar todas las mesas de trabajo (en la hoja de ruta)
+	Rearrange All Artboards	Reorganizar todas las mesas de trabajo
+	Rearrange All	Reorganizar todo
+	Layout Order:	Orden de diseño:
+	Change to Left-to-Right Layout	Cambiar a diseño de izquierda a derecha
+	Grid by Row	Cuadrícula por filas
+	Grid by Column	Cuadrícula por columnas
+	Arrange by Row	Organizar en una fila
+	Arrange by Column	Organizar en una columna
+	Move Artwork with Artboard	Mover la ilustración con la mesa de trabajo
+	Artboards: {n}	Mesas de trabajo: {n}
 	Rearrange All Artboards…	Reorganizar todas las mesas de trabajo…
 	Recall Selection	Recuperar selección
 	RECENT	RECIENTES
@@ -2487,6 +2509,13 @@
 	Smooth Color	Color suavizado
 	Smooth Tool	Herramienta Suavizar
 	Snap Curves To Lines	Ajustar curvas a líneas
+	View:	Vista:
+	Tracing Result	Resultado de calco
+	Tracing Result with Outlines	Resultado de calco con contornos
+	Outlines	Contornos
+	Outlines with Source Image	Contornos con imagen de origen
+	Source Image	Imagen de origen
+	Image Trace View	Vista del calco de imagen
 	Snap Options	Opciones de ajuste
 	Snap to Glyph	Ajustar a glifo
 	Snap to Grid	Ajustar a cuadrícula
@@ -2972,6 +3001,9 @@
 	 to zoom in  |  	 para acercar  |  
 	 to zoom out  |  	 para alejar  |  
 	 to zoom into an area	 para acercar un área
+	Hold	Mantener pulsado
+	 right or left to zoom in or out  |  	 a la derecha o a la izquierda para acercar o alejar  |  
+	 to keep zooming	 para seguir haciendo zoom
 	 an object to copy its attributes  |  	 en un objeto para copiar sus atributos  |  
 	 to apply the selection's to it  |  	 para aplicarle los de la selección  |  
 	 to sample a color	 para muestrear un color

crates/ui-egui/src/i18n/fr.tsv

@@ -77,6 +77,7 @@
 	Add to Swatches	Ajouter au nuancier
 	Add Used Colors	Ajouter les couleurs utilisées
 	Additional Plug-ins Folder	Dossier de modules externes supplémentaires
+	Additional Fonts Folder	Dossier de polices supplémentaires
 	Adjust Adjoining Width Points	Ajuster les points de largeur adjacents
 	Adjust Color Balance…	Régler la balance des couleurs…
 	Adjust Colors	Régler les couleurs
@@ -203,6 +204,7 @@
 	Auto Size New Area Type	Taille automatique du nouveau texte captif
 	Auto Spell Check	Vérification orthographique automatique
 	Auto-Collapse Iconic Panels	Réduire automatiquement les panneaux en icônes
+	Show Tool Group Labels	Afficher les libellés des groupes d'outils
 	Auto-Rotate (turn the paper to each artboard)	Rotation automatique (orienter le papier selon chaque plan de travail)
 	Automatic flatness	Planéité automatique
 	Automatically	Automatiquement
@@ -1151,6 +1153,11 @@
 	Ignore	Ignorer
 	Ignore Artboards (all the art as one page)	Ignorer les plans de travail (toute l’illustration sur une page)
 	Ignore White	Ignorer le blanc
+	Palette:	Palette :
+	Limited	Limitée
+	Full Tone	Tons continus
+	Document Library	Bibliothèque du document
+	Library:	Bibliothèque :
 	Image	Image
 	Image Info	Informations sur l’image
 	Image Map:	Image cliquable :
@@ -1393,6 +1400,9 @@
 	Marks and Bleed	Marques et fond perdu
 	Marks and Bleeds	Marques et fonds perdus
 	Match User Interface Brightness	Adapter à la luminosité de l’interface
+	Light Gray	Gris clair
+	Medium Gray	Gris moyen
+	Dark Gray	Gris foncé
 	Materials…	Matériaux…
 	Matte	Détourage
 	Matte:	Détourage :
@@ -1563,6 +1573,9 @@
 	No text selected	Aucun texte sélectionné
 	No Thumbnails	Sans vignettes
 	Noise	Bruit
+	Create:	Créer :
+	Fills	Fonds
+	Strokes	Contours
 	Nonbreaking Hyphen	Trait d’union insécable
 	Nonbreaking Space	Espace insécable
 	None	Aucun
@@ -1943,7 +1956,16 @@
 	Rating:	Classement :
 	Real World:	Monde réel :
 	Real-time Drawing and Editing	Dessin et édition en temps réel
-	Rearrange All Artboards (on the roadmap)	Réorganiser tous les plans de travail (prévu)
+	Rearrange All Artboards	Réorganiser tous les plans de travail
+	Rearrange All	Tout réorganiser
+	Layout Order:	Ordre de disposition :
+	Change to Left-to-Right Layout	Passer à la disposition de gauche à droite
+	Grid by Row	Grille par ligne
+	Grid by Column	Grille par colonne
+	Arrange by Row	Disposer en ligne
+	Arrange by Column	Disposer en colonne
+	Move Artwork with Artboard	Déplacer l’illustration avec le plan de travail
+	Artboards: {n}	Plans de travail : {n}
 	Rearrange All Artboards…	Réorganiser tous les plans de travail…
 	Recall Selection	Rappeler la sélection
 	RECENT	RÉCENTS
@@ -2484,6 +2506,13 @@
 	Smooth Color	Couleur lissée
 	Smooth Tool	Outil Arrondi
 	Snap Curves To Lines	Aimanter les courbes aux lignes
+	View:	Affichage :
+	Tracing Result	Résultat de la vectorisation
+	Tracing Result with Outlines	Résultat de la vectorisation avec contours
+	Outlines	Contours
+	Outlines with Source Image	Contours avec l’image source
+	Source Image	Image source
+	Image Trace View	Affichage de la vectorisation de l’image
 	Snap Options	Options de magnétisme
 	Snap to Glyph	Aimanter au glyphe
 	Snap to Grid	Aimanter à la grille
@@ -2969,6 +2998,9 @@
 	 to zoom in  |  	 pour effectuer un zoom avant  |  
 	 to zoom out  |  	 pour effectuer un zoom arrière  |  
 	 to zoom into an area	 pour zoomer sur une zone
+	Hold	Maintenir
+	 right or left to zoom in or out  |  	 vers la droite ou la gauche pour effectuer un zoom avant ou arrière  |  
+	 to keep zooming	 pour continuer le zoom
 	 an object to copy its attributes  |  	 sur un objet pour copier ses attributs  |  
 	 to apply the selection's to it  |  	 pour lui appliquer ceux de la sélection  |  
 	 to sample a color	 pour prélever une couleur

crates/ui-egui/src/i18n/it.tsv

@@ -76,6 +76,7 @@
 	Add to Swatches	Aggiungi ai campioni
 	Add Used Colors	Aggiungi colori usati
 	Additional Plug-ins Folder	Cartella plug-in aggiuntivi
+	Additional Fonts Folder	Cartella font aggiuntivi
 	Adjust Adjoining Width Points	Regola punti di larghezza adiacenti
 	Adjust Color Balance…	Regola bilanciamento colore…
 	Adjust Colors	Regola colori
@@ -202,6 +203,7 @@
 	Auto Size New Area Type	Dimensionamento automatico del nuovo testo in area
 	Auto Spell Check	Controllo ortografico automatico
 	Auto-Collapse Iconic Panels	Comprimi automaticamente i pannelli a icona
+	Show Tool Group Labels	Mostra etichette dei gruppi di strumenti
 	Auto-Rotate (turn the paper to each artboard)	Rotazione automatica (orienta la carta in base a ogni tavola da disegno)
 	Automatic flatness	Planarità automatica
 	Automatically	Automaticamente
@@ -1151,6 +1153,11 @@
 	Ignore	Ignora
 	Ignore Artboards (all the art as one page)	Ignora tavole da disegno (tutta la grafica come una sola pagina)
 	Ignore White	Ignora bianco
+	Palette:	Palette:
+	Limited	Limitata
+	Full Tone	Tono continuo
+	Document Library	Libreria del documento
+	Library:	Libreria:
 	Image	Immagine
 	Image Info	Informazioni immagine
 	Image Map:	Mappa immagine:
@@ -1394,6 +1401,9 @@
 	Marks and Bleed	Segni e abbondanza
 	Marks and Bleeds	Segni e abbondanze
 	Match User Interface Brightness	Adatta alla luminosità dell'interfaccia utente
+	Light Gray	Grigio chiaro
+	Medium Gray	Grigio medio
+	Dark Gray	Grigio scuro
 	Materials…	Materiali…
 	Matte	Colore alone
 	Matte:	Colore alone:
@@ -1566,6 +1576,9 @@
 	No text selected	Nessun testo selezionato
 	No Thumbnails	Nessuna miniatura
 	Noise	Disturbo
+	Create:	Crea:
+	Fills	Riempimenti
+	Strokes	Tracce
 	Nonbreaking Hyphen	Trattino indivisibile
 	Nonbreaking Space	Spazio indivisibile
 	None	Nessuno
@@ -1946,7 +1959,16 @@
 	Rating:	Valutazione:
 	Real World:	Mondo reale:
 	Real-time Drawing and Editing	Disegno e modifica in tempo reale
-	Rearrange All Artboards (on the roadmap)	Ridisponi tutte le tavole da disegno (in programma)
+	Rearrange All Artboards	Ridisponi tutte le tavole da disegno
+	Rearrange All	Ridisponi tutto
+	Layout Order:	Ordine del layout:
+	Change to Left-to-Right Layout	Passa al layout da sinistra a destra
+	Grid by Row	Griglia per righe
+	Grid by Column	Griglia per colonne
+	Arrange by Row	Disponi in una riga
+	Arrange by Column	Disponi in una colonna
+	Move Artwork with Artboard	Sposta la grafica con la tavola da disegno
+	Artboards: {n}	Tavole da disegno: {n}
 	Rearrange All Artboards…	Ridisponi tutte le tavole da disegno…
 	Recall Selection	Richiama selezione
 	RECENT	RECENTI
@@ -2487,6 +2509,13 @@
 	Smooth Color	Colore graduale
 	Smooth Tool	Strumento Smussa
 	Snap Curves To Lines	Aggancia curve a linee
+	View:	Vista:
+	Tracing Result	Risultato ricalco
+	Tracing Result with Outlines	Risultato ricalco con contorni
+	Outlines	Contorni
+	Outlines with Source Image	Contorni con immagine di origine
+	Source Image	Immagine di origine
+	Image Trace View	Vista del ricalco immagine
 	Snap Options	Opzioni di aggancio
 	Snap to Glyph	Aggancia a glifo
 	Snap to Grid	Aggancia alla griglia
@@ -2972,6 +3001,9 @@
 	 to zoom in  |  	 per ingrandire  |  
 	 to zoom out  |  	 per ridurre  |  
 	 to zoom into an area	 per ingrandire un'area
+	Hold	Tieni premuto
+	 right or left to zoom in or out  |  	 a destra o a sinistra per ingrandire o ridurre  |  
+	 to keep zooming	 per continuare lo zoom
 	 an object to copy its attributes  |  	 su un oggetto per copiarne gli attributi  |  
 	 to apply the selection's to it  |  	 per applicargli quelli della selezione  |  
 	 to sample a color	 per campionare un colore

crates/ui-egui/src/i18n/ja.tsv

@@ -675,6 +675,9 @@
 	 to transform  |  	：変形  |  
 	 to zoom in  |  	：拡大  |  
 	 to zoom into an area	：範囲を拡大
+	Hold	長押し
+	 right or left to zoom in or out  |  	：右で拡大、左で縮小  |  
+	 to keep zooming	：拡大または縮小し続ける
 	 to zoom out  |  	：縮小  |  
 	 while dragging to move perpendicular to the plane  |  	：ドラッグ中に面と垂直に移動  |  
 	(closest)	(最も近い)
@@ -721,6 +724,7 @@
 	Add to Selection	選択範囲に追加
 	Add to Swatches	スウォッチに追加
 	Additional Plug-ins Folder	追加プラグインフォルダー
+	Additional Fonts Folder	追加フォントフォルダー
 	Adjust Adjoining Width Points	隣接する幅ポイントを調整
 	Adjust Colors	カラーを調整
 	Adjust Options:	調整オプション:
@@ -806,6 +810,7 @@
 	Auto	自動
 	Auto Size New Area Type	新規エリア内文字を自動サイズ調整
 	Auto-Collapse Iconic Panels	アイコンパネルを自動的に折りたたむ
+	Show Tool Group Labels	ツールグループのラベルを表示
 	Auto-Rotate (turn the paper to each artboard)	自動回転 (アートボードごとに用紙を回転)
 	Automatic flatness	フラットネスを自動設定
 	Automatically	自動
@@ -1410,6 +1415,11 @@
 	Ignore	無視
 	Ignore Artboards (all the art as one page)	アートボードを無視 (すべてのアートを 1 ページとして扱う)
 	Ignore White	白を無視
+	Palette:	パレット:
+	Limited	限定
+	Full Tone	フルトーン
+	Document Library	ドキュメントライブラリ
+	Library:	ライブラリ:
 	Image Info	画像情報
 	Image Map:	イメージマップ:
 	Image Size	イメージサイズ
@@ -1568,6 +1578,9 @@
 	Mark as trapped	トラップ済みとしてマーク
 	Marks	トンボ
 	Match User Interface Brightness	ユーザーインターフェイスの明るさに合わせる
+	Light Gray	ライトグレー
+	Medium Gray	ミディアムグレー
+	Dark Gray	ダークグレー
 	Matte:	マット:
 	Maximize	最大化
 	Maximum Editability	編集機能を最大限に保持
@@ -1696,6 +1709,9 @@
 	No symbols in this document	このドキュメントにシンボルはありません
 	No text selected	テキストが選択されていません
 	Noise	ノイズ
+	Create:	作成:
+	Fills	塗り
+	Strokes	線
 	None	なし
 	None.	なし。
 	Normal	通常
@@ -1973,7 +1989,16 @@
 	Rating:	評価:
 	Real World:	実寸:
 	Real-time Drawing and Editing	リアルタイム描画および編集
-	Rearrange All Artboards (on the roadmap)	すべてのアートボードを再配置 (今後対応予定)
+	Rearrange All Artboards	すべてのアートボードを再配置
+	Rearrange All	すべて再配置
+	Layout Order:	レイアウト順序:
+	Change to Left-to-Right Layout	左から右のレイアウトに変更
+	Grid by Row	行ごとのグリッド
+	Grid by Column	列ごとのグリッド
+	Arrange by Row	1 行に配置
+	Arrange by Column	1 列に配置
+	Move Artwork with Artboard	アートボードと一緒にアートワークを移動
+	Artboards: {n}	アートボード: {n}
 	Recall Selection	選択範囲を呼び出し
 	Recent Colors	最近使用したカラー
 	Recent Files	最近使ったファイル
@@ -2314,6 +2339,13 @@
 	Smooth	スムーズ
 	Smooth Tool	スムーズツール
 	Snap Curves To Lines	曲線を直線にスナップ
+	View:	表示:
+	Tracing Result	トレース結果
+	Tracing Result with Outlines	トレース結果（アウトライン付き）
+	Outlines	アウトライン
+	Outlines with Source Image	アウトライン（元画像付き）
+	Source Image	元画像
+	Image Trace View	画像トレースの表示
 	Snap Options	スナップオプション
 	Snapping Tolerance	スナップ許容値
 	Soft Light	ソフトライト

crates/ui-egui/src/i18n/pt-br.tsv

@@ -78,6 +78,9 @@
 	 to transform  |  	 para transformar  |  
 	 to zoom in  |  	 para ampliar  |  
 	 to zoom into an area	 para ampliar uma área
+	Hold	Manter pressionado
+	 right or left to zoom in or out  |  	 para a direita ou a esquerda para ampliar ou reduzir  |  
+	 to keep zooming	 para continuar o zoom
 	 to zoom out  |  	 para reduzir  |  
 	 while dragging to move perpendicular to the plane  |  	 ao arrastar para mover perpendicularmente ao plano  |  
 	(closest)	(mais próximo)
@@ -135,6 +138,7 @@
 	Add to Selection	Adicionar à Seleção
 	Add to Swatches	Adicionar às Amostras
 	Additional Plug-ins Folder	Pasta Adicional de Plug-ins
+	Additional Fonts Folder	Pasta Adicional de Fontes
 	Adjust Adjoining Width Points	Ajustar Pontos de Largura Adjacentes
 	Adjust Color Balance…	Ajustar Equilíbrio de Cores…
 	Adjust Colors	Ajustar Cores
@@ -248,6 +252,7 @@
 	Auto Size New Area Type	Dimensionar Automaticamente Novo Texto de Área
 	Auto Spell Check	Verificação Ortográfica Automática
 	Auto-Collapse Iconic Panels	Recolher Automaticamente Painéis Icônicos
+	Show Tool Group Labels	Mostrar Rótulos dos Grupos de Ferramentas
 	Auto-Rotate (turn the paper to each artboard)	Girar Automaticamente (gire o papel para cada mesa de trabalho)
 	Automatic	Automático
 	Automatic flatness	Achatamento automático
@@ -1258,6 +1263,9 @@
 	Marker…	Marcador…
 	Marks	Marcas
 	Match User Interface Brightness	Corresponder ao Brilho da Interface do Usuário
+	Light Gray	Cinza Claro
+	Medium Gray	Cinza Médio
+	Dark Gray	Cinza Escuro
 	Materials…	Materiais…
 	Matte:	Fosco:
 	Maximize	Maximizar
@@ -1743,7 +1751,16 @@
 	Rating:	Avaliação:
 	Real World:	Mundo Real:
 	Real-time Drawing and Editing	Desenho e Edição em Tempo Real
-	Rearrange All Artboards (on the roadmap)	Reorganizar Todas as Mesas de Trabalho (no roadmap)
+	Rearrange All Artboards	Reorganizar Todas as Mesas de Trabalho
+	Rearrange All	Reorganizar Tudo
+	Layout Order:	Ordem do Layout:
+	Change to Left-to-Right Layout	Mudar para Layout da Esquerda para a Direita
+	Grid by Row	Grade por Linha
+	Grid by Column	Grade por Coluna
+	Arrange by Row	Organizar em Linha
+	Arrange by Column	Organizar em Coluna
+	Move Artwork with Artboard	Mover Arte com a Mesa de Trabalho
+	Artboards: {n}	Mesas de Trabalho: {n}
 	Rearrange All Artboards…	Reorganizar Todas as Mesas de Trabalho…
 	Recall Selection	Relembrar Seleção
 	Recent Colors	Cores Recentes

crates/ui-egui/src/i18n/ru.tsv

@@ -74,6 +74,7 @@
 	Add to Swatches	Добавить в образцы
 	Add Used Colors	Добавить использованные цвета
 	Additional Plug-ins Folder	Папка дополнительных модулей
+	Additional Fonts Folder	Папка дополнительных шрифтов
 	Adjust Adjoining Width Points	Настроить смежные точки ширины
 	Adjust Color Balance…	Настроить цветовой баланс…
 	Adjust Colors	Настроить цвета
@@ -200,6 +201,7 @@
 	Auto Size New Area Type	Автоматически подгонять размер нового текста в области
 	Auto Spell Check	Автоматическая проверка орфографии
 	Auto-Collapse Iconic Panels	Автоматически сворачивать значки панелей
+	Show Tool Group Labels	Показывать названия групп инструментов
 	Auto-Rotate (turn the paper to each artboard)	Автоповорот (поворачивать лист по каждой монтажной области)
 	Automatic flatness	Автоматическая плоскостность
 	Automatically	Автоматически
@@ -1149,6 +1151,11 @@
 	Ignore	Игнорировать
 	Ignore Artboards (all the art as one page)	Игнорировать монтажные области (весь рисунок как одна страница)
 	Ignore White	Игнорировать белый
+	Palette:	Палитра:
+	Limited	Ограниченная
+	Full Tone	Полутоновая
+	Document Library	Библиотека документа
+	Library:	Библиотека:
 	Image	Изображение
 	Image Info	Сведения об изображении
 	Image Map:	Карта изображения:
@@ -1392,6 +1399,9 @@
 	Marks and Bleed	Метки и вылет
 	Marks and Bleeds	Метки и вылеты
 	Match User Interface Brightness	Согласовать с яркостью интерфейса
+	Light Gray	Светло-серый
+	Medium Gray	Средне-серый
+	Dark Gray	Тёмно-серый
 	Materials…	Материалы…
 	Matte	Мат
 	Matte:	Мат:
@@ -1562,6 +1572,9 @@
 	No text selected	Текст не выделен
 	No Thumbnails	Без миниатюр
 	Noise	Шум
+	Create:	Создать:
+	Fills	Заливки
+	Strokes	Обводки
 	Nonbreaking Hyphen	Неразрывный дефис
 	Nonbreaking Space	Неразрывный пробел
 	None	Нет
@@ -1942,7 +1955,16 @@
 	Rating:	Рейтинг:
 	Real World:	Реальный мир:
 	Real-time Drawing and Editing	Рисование и редактирование в реальном времени
-	Rearrange All Artboards (on the roadmap)	Переставить все монтажные области (в плане развития)
+	Rearrange All Artboards	Переставить все монтажные области
+	Rearrange All	Переставить все
+	Layout Order:	Порядок макета:
+	Change to Left-to-Right Layout	Переключить на макет слева направо
+	Grid by Row	Сетка по строкам
+	Grid by Column	Сетка по столбцам
+	Arrange by Row	Расположить в строку
+	Arrange by Column	Расположить в столбец
+	Move Artwork with Artboard	Перемещать иллюстрацию вместе с монтажной областью
+	Artboards: {n}	Монтажные области: {n}
 	Rearrange All Artboards…	Переставить все монтажные области…
 	Recall Selection	Восстановить выделение
 	RECENT	ПОСЛЕДНИЕ
@@ -2483,6 +2505,13 @@
 	Smooth Color	Сглаженный цвет
 	Smooth Tool	Инструмент «Сглаживание»
 	Snap Curves To Lines	Привязывать кривые к линиям
+	View:	Просмотр:
+	Tracing Result	Результат трассировки
+	Tracing Result with Outlines	Результат трассировки с контурами
+	Outlines	Контуры
+	Outlines with Source Image	Контуры с исходным изображением
+	Source Image	Исходное изображение
+	Image Trace View	Просмотр трассировки изображения
 	Snap Options	Параметры привязки
 	Snap to Glyph	Привязать к глифу
 	Snap to Grid	Привязать к сетке
@@ -2968,6 +2997,9 @@
 	 to zoom in  |  	 для увеличения  |  
 	 to zoom out  |  	 для уменьшения  |  
 	 to zoom into an area	 для увеличения области
+	Hold	Удерживать
+	 right or left to zoom in or out  |  	 вправо или влево для увеличения или уменьшения  |  
+	 to keep zooming	 для непрерывного масштабирования
 	 an object to copy its attributes  |  	 в объект для копирования его атрибутов  |  
 	 to apply the selection's to it  |  	 для применения атрибутов выделения к нему  |  
 	 to sample a color	 для взятия образца цвета

crates/ui-egui/src/i18n/zh-hans.tsv

@@ -79,6 +79,7 @@
 	Add to Swatches	添加到色板
 	Add Used Colors	添加已用颜色
 	Additional Plug-ins Folder	附加增效工具文件夹
+	Additional Fonts Folder	附加字体文件夹
 	Adjust Adjoining Width Points	调整相邻宽度点
 	Adjust Color Balance…	调整色彩平衡…
 	Adjust Colors	调整颜色
@@ -202,6 +203,7 @@
 	Auto Size New Area Type	自动调整新区域文字大小
 	Auto Spell Check	自动拼写检查
 	Auto-Collapse Iconic Panels	自动折叠图标面板
+	Show Tool Group Labels	显示工具组标签
 	Auto-Rotate (turn the paper to each artboard)	自动旋转 (为每个画板转动纸张)
 	Automatic flatness	自动平滑度
 	Automatically	自动
@@ -1140,6 +1142,11 @@
 	Ignore	忽略
 	Ignore Artboards (all the art as one page)	忽略画板 (所有图稿作为一页)
 	Ignore White	忽略白色
+	Palette:	调板：
+	Limited	有限
+	Full Tone	全色调
+	Document Library	文档库
+	Library:	库：
 	Image	图像
 	Image Info	图像信息
 	Image Map:	图像映射：
@@ -1376,6 +1383,9 @@
 	Marks and Bleed	标记和出血
 	Marks and Bleeds	标记和出血
 	Match User Interface Brightness	匹配用户界面亮度
+	Light Gray	浅灰色
+	Medium Gray	中灰色
+	Dark Gray	深灰色
 	Materials…	材质…
 	Matte	杂边
 	Matte:	杂边：
@@ -1541,6 +1551,9 @@
 	No text selected	未选择文字
 	No Thumbnails	无缩略图
 	Noise	杂色
+	Create:	创建：
+	Fills	填色
+	Strokes	描边
 	Nonbreaking Hyphen	不断行连字号
 	Nonbreaking Space	不断行空格
 	None	无
@@ -1920,7 +1933,16 @@
 	Rating:	等级：
 	Real World:	真实世界：
 	Real-time Drawing and Editing	实时绘图和编辑
-	Rearrange All Artboards (on the roadmap)	重新排列所有画板 (规划中)
+	Rearrange All Artboards	重新排列所有画板
+	Rearrange All	全部重新排列
+	Layout Order:	布局顺序：
+	Change to Left-to-Right Layout	更改为由左至右版面配置
+	Grid by Row	按行网格排列
+	Grid by Column	按列网格排列
+	Arrange by Row	排成一行
+	Arrange by Column	排成一列
+	Move Artwork with Artboard	随画板移动图稿
+	Artboards: {n}	画板：{n}
 	Rearrange All Artboards…	重新排列所有画板…
 	Recall Selection	召回选区
 	RECENT	最近使用
@@ -2424,6 +2446,13 @@
 	Smooth Color	平滑颜色
 	Smooth Tool	平滑工具
 	Snap Curves To Lines	将曲线对齐到直线
+	View:	视图：
+	Tracing Result	描摹结果
+	Tracing Result with Outlines	描摹结果（带轮廓）
+	Outlines	轮廓
+	Outlines with Source Image	轮廓（带源图像）
+	Source Image	源图像
+	Image Trace View	图像描摹视图
 	Snap Options	对齐选项
 	Snap to Glyph	靠齐字符
 	Snap to Grid	对齐网格
@@ -2912,6 +2941,9 @@
 	 to zoom in  |  	以放大  |  
 	 to zoom out  |  	以缩小  |  
 	 to zoom into an area	以放大指定区域
+	Hold	按住
+	 right or left to zoom in or out  |  	向右以放大、向左以缩小  |  
+	 to keep zooming	以持续缩放
 	 an object to copy its attributes  |  	选择对象以复制其属性  |  
 	 to apply the selection's to it  |  	以将所选对象属性应用到它  |  
 	 to sample a color	以取样颜色

crates/ui-egui/src/i18n/zh-hant.tsv

@@ -87,6 +87,7 @@
 	Add to Swatches	新增至色票
 	Add Used Colors	新增使用中的顏色
 	Additional Plug-ins Folder	額外的增效模組資料夾
+	Additional Fonts Folder	額外的字體資料夾
 	Adjust Adjoining Width Points	調整相鄰寬度點
 	Adjust Color Balance…	調整色彩平衡…
 	Adjust Colors	調整顏色
@@ -213,6 +214,7 @@
 	Auto Size New Area Type	自動調整新區域文字大小
 	Auto Spell Check	自動拼字檢查
 	Auto-Collapse Iconic Panels	自動收合圖示面板
+	Show Tool Group Labels	顯示工具組標籤
 	Auto-Rotate (turn the paper to each artboard)	自動旋轉 (將紙張轉向各工作區域)
 	Automatic flatness	自動平滑度
 	Automatically	自動
@@ -1169,6 +1171,11 @@
 	Ignore	略過
 	Ignore Artboards (all the art as one page)	忽略工作區域 (所有圖稿視為單一頁面)
 	Ignore White	忽略白色
+	Palette:	調色盤：
+	Limited	有限
+	Full Tone	全色調
+	Document Library	文件資料庫
+	Library:	資料庫：
 	Image	影像
 	Image Info	影像資訊
 	Image Map:	影像地圖：
@@ -1412,6 +1419,9 @@
 	Marks and Bleed	標記與出血
 	Marks and Bleeds	標記與出血
 	Match User Interface Brightness	符合使用者介面亮度
+	Light Gray	淺灰色
+	Medium Gray	中灰色
+	Dark Gray	深灰色
 	Materials…	材質…
 	Matte	邊緣色
 	Matte:	遮色：
@@ -1583,6 +1593,9 @@
 	No text selected	未選取文字
 	No Thumbnails	無縮圖
 	Noise	雜訊
+	Create:	建立：
+	Fills	填色
+	Strokes	筆畫
 	Nonbreaking Hyphen	不斷行連字號
 	Nonbreaking Space	不斷行空格
 	None	無
@@ -1966,7 +1979,16 @@
 	Rating:	評等：
 	Real World:	真實世界：
 	Real-time Drawing and Editing	即時繪圖與編輯
-	Rearrange All Artboards (on the roadmap)	重新排列所有工作區域 (規劃中)
+	Rearrange All Artboards	重新排列所有工作區域
+	Rearrange All	全部重新排列
+	Layout Order:	版面配置順序：
+	Change to Left-to-Right Layout	變更為由左至右版面配置
+	Grid by Row	依列格狀排列
+	Grid by Column	依欄格狀排列
+	Arrange by Row	排成一列
+	Arrange by Column	排成一欄
+	Move Artwork with Artboard	隨工作區域移動圖稿
+	Artboards: {n}	工作區域：{n}
 	Rearrange All Artboards…	重新排列所有工作區域…
 	Recall Selection	叫出選取範圍
 	RECENT	最近使用
@@ -2507,6 +2529,13 @@
 	Smooth Color	平滑顏色
 	Smooth Tool	平滑工具
 	Snap Curves To Lines	將曲線靠齊線條
+	View:	檢視：
+	Tracing Result	描圖結果
+	Tracing Result with Outlines	描圖結果（含外框）
+	Outlines	外框
+	Outlines with Source Image	外框（含來源影像）
+	Source Image	來源影像
+	Image Trace View	影像描圖檢視
 	Snap Options	靠齊選項
 	Snap to Glyph	靠齊字符
 	Snap to Grid	靠齊格點
@@ -2997,6 +3026,9 @@
 	 to zoom in  |  	可放大  |  
 	 to zoom out  |  	可縮小  |  
 	 to zoom into an area	可放大至指定區域
+	Hold	按住
+	 right or left to zoom in or out  |  	向右可放大、向左可縮小  |  
+	 to keep zooming	可持續縮放
 	 an object to copy its attributes  |  	物件可複製其屬性  |  
 	 to apply the selection's to it  |  	可將選取範圍的屬性套用至該物件  |  
 	 to sample a color	可取樣顏色

crates/ui-egui/src/lib.rs

@@ -291,6 +291,8 @@ pub struct CacheKey {
     /// View › Pixel Preview: the document pixels rendered (x0, y0, x1, y1), one per point, shown
     /// with hard edges. None: the art is rendered for the screen.
     pub pixel: Option<[i64; 4]>,
+    /// Images sampled smoothly ([`vectorcraft_render::RenderOptions::smooth_images`]).
+    pub smooth_images: bool,
 }
 
 #[derive(Clone, Copy, Debug, Default)]

crates/ui-egui/src/menus.rs

@@ -473,7 +473,7 @@ pub const UI_COMMANDS: &[(&str, &str, &str, &str)] = &[
         "ui.menuDialog",
         "Menu Dialog",
         "",
-        "{command: object.move|object.rotate|object.scale|object.reflect|object.shear|object.transformEach|path.average|object.path.offsetPath|object.path.simplify|object.path.splitIntoGrid|object.vectorHalftone|object.envelope.makeWithWarp|object.envelope.resetWithWarp|object.envelope.makeWithMesh|object.envelope.resetWithMesh|object.envelope.options} open the dialog that command's menu item opens (dialog kind: move, rotate, scale, reflect, shear, transformEach, …, vectorHalftone, envelopeWarp, envelopeMesh, envelopeOptions; Scale and Transform Each have `corners` and `strokes`, from the preferences, which OK updates; the envelope dialogs start from the selected envelope, Make opens as Reset (`reset: true`) while one is selected)",
+        "{command: object.move|object.rotate|object.scale|object.reflect|object.shear|object.transformEach|path.average|object.path.offsetPath|object.path.simplify|object.path.splitIntoGrid|object.vectorHalftone|artboard.rearrange|object.envelope.makeWithWarp|object.envelope.resetWithWarp|object.envelope.makeWithMesh|object.envelope.resetWithMesh|object.envelope.options} open the dialog that command's menu item opens (dialog kind: move, rotate, scale, reflect, shear, transformEach, …, vectorHalftone, rearrangeArtboards, envelopeWarp, envelopeMesh, envelopeOptions; Scale and Transform Each have `corners` and `strokes`, from the preferences, which OK updates; the envelope dialogs start from the selected envelope, Make opens as Reset (`reset: true`) while one is selected)",
     ),
     (
         "ui.widthPointEdit",
@@ -2196,7 +2196,7 @@ pub fn menu_tree() -> Vec<(&'static str, Vec<Item>)> {
                     "Artboards",
                     vec![
                         c("Convert to Artboards", "artboard.convertToArtboards"),
-                        cp("Rearrange All Artboards…", "artboard.rearrange", json!({"columns": 2, "spacing": 20, "moveArtwork": true})),
+                        c("Rearrange All Artboards…", "artboard.rearrange"),
                         Sep,
                         c("Fit to Artwork Bounds", "artboard.fitToArt"),
                         c("Fit to Selected Art", "artboard.fitToSelection"),
@@ -2870,6 +2870,7 @@ fn menu_dialog(id: &str) -> Option<(&'static str, Value)> {
         "object.path.simplify" => ("simplify", json!({"tolerance": "1 pt"})),
         "object.path.splitIntoGrid" => ("splitIntoGrid", json!({"rows": 2, "columns": 2, "gutter": "12 pt"})),
         "object.vectorHalftone" => (crate::dialogs::halftone::KIND, crate::dialogs::halftone::fields()),
+        "artboard.rearrange" => (crate::dialogs::rearrange_artboards::KIND, crate::dialogs::rearrange_artboards::fields()),
         _ => return None,
     })
 }

crates/ui-egui/src/panels/artboards.rs

@@ -113,7 +113,9 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
     });
     let n = abs.len();
     widgets::bottom_bar(ui, |ui| {
-        widgets::icon_button_enabled(ui, "dc-rearrange", tl!("Rearrange All Artboards (on the roadmap)"), false, false, 24.0);
+        if widgets::icon_button_enabled(ui, "dc-rearrange", tl!("Rearrange All Artboards"), false, n > 1, 24.0).clicked() {
+            open_rearrange(app);
+        }
         ui.add_space((ui.available_width() - 4.0 * 28.0).max(0.0));
         if widgets::icon_button_enabled(ui, "dc-arrow-up", tl!("Move Up"), false, sel > 0, 24.0).clicked()
             && app.run("artboard.reorder", json!({"index": sel, "to": sel - 1})).is_ok()
@@ -140,6 +142,11 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
     });
 }
 
+/// Open Rearrange All Artboards (#681).
+pub(crate) fn open_rearrange(app: &mut VectorcraftApp) {
+    app.run("ui.menuDialog", json!({ "command": "artboard.rearrange" })).ok();
+}
+
 pub fn menu(app: &mut VectorcraftApp, ui: &mut Ui) {
     let n = app.session.active().map(|d| d.doc.artboards.len()).unwrap_or(0);
     let sel = selected(app, n);
@@ -161,7 +168,9 @@ pub fn menu(app: &mut VectorcraftApp, ui: &mut Ui) {
     if menu_item(ui, tl!("Artboard Options…"), n > 0, false) {
         app.select_tool("artboard");
     }
-    menu_item(ui, tl!("Rearrange All Artboards…"), false, false);
+    if menu_item(ui, tl!("Rearrange All Artboards…"), n > 1, false) {
+        open_rearrange(app);
+    }
     ui.separator();
     if menu_item(ui, tl!("Fit to Artwork Bounds"), n > 0, false) {
         app.run("artboard.fitToArt", json!({"index": sel})).ok();

crates/ui-egui/src/panels/image_trace.rs

@@ -1,22 +1,57 @@
-//! Image Trace panel: preset, mode, threshold or colour count, and the advanced fidelity options.
-//! With an Image Trace object selected, changing a setting re-traces it (one undo step per change;
-//! sliders apply when released). With an image selected, Trace makes a new Image Trace object.
+//! Image Trace panel: preset, view, mode, palette (Color), threshold or colour count, and the
+//! Advanced section (open or closed as it was last left): fidelity, method, and Create: Fills /
+//! Strokes with the widest line stroked. With an Image Trace object selected, changing a setting
+//! re-traces it (one undo step per change; sliders apply when released) and changing the view
+//! redraws it without tracing again. With an image selected, Trace makes a new Image Trace object.
 
 use egui::Ui;
 use serde_json::{Value, json};
-use vectorcraft_doc::{Node, NodeKind};
+use vectorcraft_doc::{Node, NodeKind, TraceView};
+use vectorcraft_engine::cmd::swatchlib::DOCUMENT_SWATCHES;
 
-use super::{first_selected, pstate, set_pstate};
+use super::{first_selected, library_panel, pstate, set_pstate, swatches};
 use crate::VectorcraftApp;
 use crate::widgets::{self, menu_item};
 
 const MODES: [(&str, &str); 3] = [("blackAndWhite", "Black and White"), ("grayscale", "Grayscale"), ("color", "Color")];
 
-/// Panel state: the preset name, the current parameters and the last result's counts.
+/// Color mode's palettes (`palette` param ids), in panel order.
+const PALETTES: [&str; 4] = ["limited", "fullTone", "automatic", "documentLibrary"];
+
+/// Palette `id`, in the UI language.
+fn palette_label(id: &str) -> &'static str {
+    match id {
+        "fullTone" => tl!("Full Tone"),
+        "automatic" => tl!("Automatic"),
+        "documentLibrary" => tl!("Document Library"),
+        _ => tl!("Limited"),
+    }
+}
+
+/// The name of Document Library's library `key` (the document's swatches or a swatch library); a
+/// library that is gone shows its key.
+fn library_label(app: &VectorcraftApp, key: &str) -> String {
+    match swatches::limit_name(app, key) {
+        Some(_) if key == DOCUMENT_SWATCHES => tl!(swatches::DOCUMENT_SWATCHES).to_string(),
+        Some(name) => library_panel::library_name(key, &name).to_string(),
+        None => key.to_string(),
+    }
+}
+
+/// Document Library's choices: the document's swatches, then the colour libraries (`current`
+/// checked) → the key chosen.
+fn library_list(app: &VectorcraftApp, ui: &mut Ui, current: &str) -> Option<String> {
+    let document = menu_item(ui, swatches::DOCUMENT_SWATCHES, true, current == DOCUMENT_SWATCHES).then(|| DOCUMENT_SWATCHES.to_string());
+    ui.separator();
+    library_panel::library_items(ui, &swatches::colour_libraries(app), Some(current)).or(document)
+}
+
+/// Panel state: the preset name, the current parameters, the view and the last result's counts.
 #[derive(Clone, Default)]
 struct TraceUi {
     preset: String,
     params: Value,
+    view: TraceView,
     info: Option<(u64, u64, u64)>,
     /// The selected Image Trace object's stored settings last adopted (so edits in progress
     /// aren't overwritten until the object changes).
@@ -44,12 +79,44 @@ fn target(app: &VectorcraftApp) -> (bool, bool, Option<Value>) {
     (is_trace(&n), matches!(n.kind, NodeKind::Image(_)), n.trace.map(|t| *t))
 }
 
-/// The preset of the one selected Image Trace object ("Custom" once its settings were changed).
-pub(crate) fn selected_preset(app: &VectorcraftApp) -> Option<String> {
+/// The one selected Image Trace object's preset ("Custom" once its settings were changed) and view.
+pub(crate) fn selected_trace(app: &VectorcraftApp) -> Option<(String, TraceView)> {
     let st = app.session.active()?;
     let [id] = st.selection.objects[..] else { return None };
     let n = st.doc.node(id).filter(|n| is_trace(n))?;
-    Some(n.trace.as_ref().and_then(|t| t["preset"].as_str()).unwrap_or("Custom").to_string())
+    Some((n.trace.as_ref().and_then(|t| t["preset"].as_str()).unwrap_or("Custom").to_string(), n.trace_view()))
+}
+
+/// Image Trace › View, in the UI language.
+fn view_label(v: TraceView) -> &'static str {
+    match v {
+        TraceView::Result => tl!("Tracing Result"),
+        TraceView::ResultWithOutlines => tl!("Tracing Result with Outlines"),
+        TraceView::Outlines => tl!("Outlines"),
+        TraceView::OutlinesWithSource => tl!("Outlines with Source Image"),
+        TraceView::Source => tl!("Source Image"),
+    }
+}
+
+/// The View dropdown showing `current` → the view chosen.
+fn view_dropdown(ui: &mut Ui, current: TraceView, width: f32) -> Option<TraceView> {
+    let labels = TraceView::ALL.map(view_label);
+    widgets::dropdown_names(ui, "trace-view", view_label(current), &labels, width).and_then(|i| TraceView::ALL.get(i).copied())
+}
+
+/// Show the selected Image Trace objects with `view` (no new trace).
+fn set_view(app: &mut VectorcraftApp, view: TraceView) {
+    if let Err(e) = app.run("imageTrace.setView", json!({ "view": view.id() })) {
+        app.ui.status = e;
+    }
+}
+
+/// The selected Image Trace object's View row (Control bar, Properties).
+pub(crate) fn view_row(app: &mut VectorcraftApp, ui: &mut Ui, current: TraceView, width: f32) {
+    widgets::dim_label(ui, tl!("View:"));
+    if let Some(v) = view_dropdown(ui, current, width) {
+        set_view(app, v);
+    }
 }
 
 /// Trace the selected image, or trace the selected Image Trace object again, with built-in `preset`.
@@ -94,12 +161,13 @@ pub(crate) fn preset_dropdown(app: &mut VectorcraftApp, ui: &mut Ui, current: &s
     }
 }
 
-/// The Control bar for one selected Image Trace object: its preset, the Image Trace panel and
-/// Expand. Whether it is one.
+/// The Control bar for one selected Image Trace object: its preset, view, the Image Trace panel
+/// and Expand. Whether it is one.
 pub fn control_bar(app: &mut VectorcraftApp, ui: &mut Ui) -> bool {
-    let Some(preset) = selected_preset(app) else { return false };
+    let Some((preset, view)) = selected_trace(app) else { return false };
     widgets::dim_label(ui, tl!("Preset:"));
     preset_dropdown(app, ui, &preset, 150.0);
+    view_row(app, ui, view, 190.0);
     if widgets::icon_button(ui, "image", tl!("Image Trace"), false, 24.0).clicked() {
         app.ui.open_panel = Some("imageTrace".into());
     }
@@ -112,7 +180,7 @@ pub fn control_bar(app: &mut VectorcraftApp, ui: &mut Ui) -> bool {
 
 fn trace(app: &mut VectorcraftApp, st: &mut TraceUi) {
     let preset = if st.preset == "Custom" { "Default" } else { st.preset.as_str() };
-    match app.run("imageTrace.make", json!({ "preset": preset, "params": st.params })) {
+    match app.run("imageTrace.make", json!({ "preset": preset, "params": st.params, "view": st.view.id() })) {
         Ok(r) => st.info = Some((r["paths"].as_u64().unwrap_or(0), r["anchors"].as_u64().unwrap_or(0), r["colors"].as_u64().unwrap_or(0))),
         Err(e) => app.ui.status = e,
     }
@@ -143,6 +211,7 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
     if let Some(t) = stored.filter(|t| *t != st.synced) {
         st.preset = t["preset"].as_str().unwrap_or("Custom").to_string();
         st.params = t["params"].clone();
+        st.view = TraceView::of(&t);
         st.synced = t;
     }
     let mut retrace = false;
@@ -156,6 +225,15 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
             retrace = true;
         }
     });
+    ui.horizontal(|ui| {
+        widgets::dim_label(ui, tl!("View:"));
+        if let Some(v) = view_dropdown(ui, st.view, 170.0) {
+            st.view = v;
+            if is_trace {
+                set_view(app, v);
+            }
+        }
+    });
     ui.horizontal(|ui| {
         widgets::dim_label(ui, tl!("Mode:"));
         let mode = st.params["mode"].as_str().unwrap_or("blackAndWhite").to_string();
@@ -167,23 +245,49 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
             retrace = true;
         }
     });
-    let bw = st.params["mode"].as_str() == Some("blackAndWhite");
-    let (key, label, range) = if bw {
-        ("threshold", tl!("Threshold"), 0.0..=255.0)
-    } else {
-        ("colors", if st.params["mode"] == "grayscale" { tl!("Grays") } else { tl!("Colors") }, 2.0..=256.0)
+    let mode = st.params["mode"].as_str().unwrap_or("blackAndWhite").to_string();
+    let palette = st.params["palette"].as_str().unwrap_or("limited").to_string();
+    if mode == "color" {
+        ui.horizontal(|ui| {
+            widgets::dim_label(ui, tl!("Palette:"));
+            let labels = PALETTES.map(palette_label);
+            if let Some(p) = widgets::dropdown_names(ui, "it-palette", palette_label(&palette), &labels, 170.0).and_then(|i| PALETTES.get(i)) {
+                st.params["palette"] = json!(p);
+                st.preset = "Custom".into();
+                retrace = true;
+            }
+        });
+        if palette == "documentLibrary" {
+            ui.horizontal(|ui| {
+                widgets::dim_label(ui, tl!("Library:"));
+                let key = st.params["library"].as_str().unwrap_or(DOCUMENT_SWATCHES).to_string();
+                if let Some(k) = widgets::combo(ui, "it-library", &library_label(app, &key), 170.0, false, |ui| library_list(app, ui, &key)) {
+                    st.params["library"] = json!(k);
+                    st.preset = "Custom".into();
+                    retrace = true;
+                }
+            });
+        }
+    }
+    // Full Tone and Automatic: how many colours (Less … More); else a count or the threshold.
+    let (key, label, range, suffix) = match mode.as_str() {
+        "blackAndWhite" => ("threshold", tl!("Threshold"), 0.0..=255.0, ""),
+        "grayscale" => ("colors", tl!("Grays"), 2.0..=256.0, ""),
+        _ if matches!(palette.as_str(), "fullTone" | "automatic") => ("colorDetail", tl!("Colors"), 0.0..=100.0, "%"),
+        _ => ("colors", tl!("Colors"), 2.0..=256.0, ""),
     };
     let mut v = st.params[key].as_f64().unwrap_or(0.0);
-    let (changed, release) = slider(ui, label, &mut v, range, "");
+    let (changed, release) = slider(ui, label, &mut v, range, suffix);
     if changed {
-        st.params[key] = json!(v.round() as u64);
+        st.params[key] = if key == "colorDetail" { json!(v.round()) } else { json!(v.round() as u64) };
         st.preset = "Custom".into();
     }
     retrace |= release;
 
-    let open: bool = !pstate::<bool>(ui.ctx(), "it-advanced-closed");
-    if ui.add(egui::Button::new(format!("{} {}", if open { "▾" } else { "▸" }, tl!("Advanced"))).frame(false)).clicked() {
-        set_pstate(ui.ctx(), "it-advanced-closed", open);
+    ui.add_space(4.0);
+    let open = app.ui.image_trace_advanced;
+    if widgets::section_toggle(ui, tl!("Advanced"), open) {
+        app.ui.image_trace_advanced = !open;
     }
     if open {
         for (key, label, range, suffix) in
@@ -207,6 +311,27 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
                 }
             }
         });
+        // Create: Fills and/or Strokes (one of them stays on), and the widest line stroked.
+        let create = |p: &Value, key: &str| p[key].as_bool().unwrap_or(key == "fills");
+        let strokes = create(&st.params, "strokes");
+        ui.horizontal(|ui| {
+            widgets::dim_label(ui, tl!("Create:"));
+            for (key, other, label) in [("fills", "strokes", tl!("Fills")), ("strokes", "fills", tl!("Strokes"))] {
+                let on = create(&st.params, key);
+                if widgets::check(ui, label, on, !on || create(&st.params, other)) {
+                    st.params[key] = json!(!on);
+                    st.preset = "Custom".into();
+                    retrace = true;
+                }
+            }
+        });
+        let mut v = st.params["strokeWidth"].as_f64().unwrap_or(10.0);
+        let (changed, release) = ui.add_enabled_ui(strokes, |ui| slider(ui, tl!("Stroke"), &mut v, 1.0..=100.0, " px")).inner;
+        if changed {
+            st.params["strokeWidth"] = json!(v.round());
+            st.preset = "Custom".into();
+        }
+        retrace |= release;
         for (key, label) in [("snapCurvesToLines", tl!("Snap Curves To Lines")), ("ignoreWhite", tl!("Ignore White"))] {
             let on = st.params[key].as_bool().unwrap_or(false);
             if widgets::check(ui, label, on, true) {
@@ -258,6 +383,119 @@ pub fn menu(app: &mut VectorcraftApp, ui: &mut Ui) {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use egui::{Event, PointerButton, Pos2, Rect, vec2};
+
+    /// One headless frame of the panel (and its menu) with `events`: the texts drawn, with where.
+    fn frame(app: &mut VectorcraftApp, ctx: &egui::Context, events: Vec<Event>) -> Vec<(String, Rect)> {
+        let screen = Rect::from_min_size(Pos2::ZERO, vec2(280.0, 700.0));
+        let mut out = ctx.run_ui(egui::RawInput { screen_rect: Some(screen), events, ..Default::default() }, |ui| show(app, ui));
+        out.textures_delta.clear();
+        crate::tests_removeanchors::shapes_text(&out.shapes.iter().map(|c| c.shape.clone()).collect::<Vec<_>>())
+    }
+
+    /// Click the panel's `label` (the first one drawn).
+    fn click(app: &mut VectorcraftApp, ctx: &egui::Context, label: &str) {
+        let texts = frame(app, ctx, vec![]);
+        let at = texts.iter().find(|(t, _)| t == label).map(|(_, r)| r.center()).unwrap_or_else(|| panic!("no `{label}` in {texts:?}"));
+        let press = |pressed| Event::PointerButton { pos: at, button: PointerButton::Primary, pressed, modifiers: Default::default() };
+        frame(app, ctx, vec![Event::PointerMoved(at), press(true)]);
+        frame(app, ctx, vec![press(false)]);
+    }
+
+    fn traced_app() -> VectorcraftApp {
+        let mut app = VectorcraftApp::new(vectorcraft_engine::Session::new(), Default::default());
+        app.session.execute("file.new", &json!({"width": 100, "height": 100})).unwrap();
+        let img = image::RgbaImage::from_fn(20, 20, |x, _| image::Rgba(if x < 10 { [0, 0, 0, 255] } else { [255, 255, 255, 255] }));
+        let mut png = vec![];
+        img.write_to(&mut std::io::Cursor::new(&mut png), image::ImageFormat::Png).unwrap();
+        let data = vectorcraft_format::base64_encode(&png);
+        app.run("file.place", json!({"name": "half.png", "dataBase64": data, "link": false})).unwrap();
+        app.run("imageTrace.make", json!({"preset": "Default"})).unwrap();
+        app
+    }
+
+    #[test]
+    fn advanced_is_a_section_that_stays_as_it_was_left() {
+        let mut app = traced_app();
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        let has = |texts: &[(String, Rect)], s: &str| texts.iter().any(|(t, _)| t == s);
+        let texts = frame(&mut app, &ctx, vec![]);
+        assert!(app.ui.image_trace_advanced && has(&texts, "Advanced") && has(&texts, "Corners"), "open at first: {texts:?}");
+        click(&mut app, &ctx, "Advanced");
+        assert!(!app.ui.image_trace_advanced, "the header closes it");
+        assert!(!has(&frame(&mut app, &ctx, vec![]), "Corners"));
+        // Remembered with the UI preferences, across launches.
+        let saved: crate::state::UiState = serde_json::from_value(serde_json::to_value(&app.ui).unwrap()).unwrap();
+        assert!(!saved.image_trace_advanced);
+        let old: crate::state::UiState = serde_json::from_value(json!({})).unwrap();
+        assert!(old.image_trace_advanced, "open for preferences saved before the section existed");
+        click(&mut app, &ctx, "Advanced");
+        assert!(app.ui.image_trace_advanced && has(&frame(&mut app, &ctx, vec![]), "Corners"));
+    }
+
+    #[test]
+    fn the_view_dropdown_shows_and_sets_the_objects_view() {
+        let mut app = traced_app();
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        let texts = frame(&mut app, &ctx, vec![]);
+        assert!(texts.iter().any(|(t, _)| t == "View:") && texts.iter().any(|(t, _)| t == "Tracing Result"), "{texts:?}");
+        let steps = app.session.active().unwrap().history.undo.len();
+        click(&mut app, &ctx, "Tracing Result");
+        click(&mut app, &ctx, "Source Image");
+        assert_eq!(selected_trace(&app).map(|t| t.1), Some(TraceView::Source));
+        assert_eq!(app.session.active().unwrap().history.undo.len(), steps + 1, "one undo step, no new trace");
+        // Another object's view is shown when it is selected.
+        app.run("imageTrace.setView", json!({"view": "outlines"})).unwrap();
+        assert!(frame(&mut app, &ctx, vec![]).iter().any(|(t, _)| t == "Outlines"));
+    }
+
+    #[test]
+    fn the_palette_shows_in_color_mode_and_traces_again() {
+        let mut app = traced_app();
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        let has = |texts: &[(String, Rect)], s: &str| texts.iter().any(|(t, _)| t == s);
+        let palette = |app: &VectorcraftApp| target(app).2.map(|t| t["params"]["palette"].clone());
+        assert!(!has(&frame(&mut app, &ctx, vec![]), "Palette:"), "Black and White has no palette");
+        app.run("imageTrace.make", json!({"preset": "6 Colors"})).unwrap();
+        let texts = frame(&mut app, &ctx, vec![]);
+        assert!(has(&texts, "Palette:") && has(&texts, "Limited") && !has(&texts, "Library:"), "{texts:?}");
+        // Document Library traces again with the document's swatches, and names them.
+        click(&mut app, &ctx, "Limited");
+        click(&mut app, &ctx, "Document Library");
+        assert_eq!(palette(&app), Some(json!("documentLibrary")));
+        let texts = frame(&mut app, &ctx, vec![]);
+        assert!(has(&texts, "Library:") && has(&texts, "Document Swatches"), "{texts:?}");
+        // Full Tone's Colors is how many, Less (0%) … More (100%).
+        click(&mut app, &ctx, "Document Library");
+        click(&mut app, &ctx, "Full Tone");
+        assert_eq!(palette(&app), Some(json!("fullTone")));
+        let texts = frame(&mut app, &ctx, vec![]);
+        assert!(has(&texts, "50") && !has(&texts, "Library:"), "{texts:?}");
+    }
+
+    #[test]
+    fn create_strokes_traces_again_and_keeps_one_kind_on() {
+        let mut app = traced_app();
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        let create = |app: &VectorcraftApp| target(app).2.map(|t| (t["params"]["fills"].clone(), t["params"]["strokes"].clone()));
+        let texts = frame(&mut app, &ctx, vec![]);
+        for s in ["Create:", "Fills", "Strokes", "Stroke", "10"] {
+            assert!(texts.iter().any(|(t, _)| t == s), "{s}: {texts:?}");
+        }
+        // Fills alone can't be turned off.
+        click(&mut app, &ctx, "Fills");
+        assert_eq!(create(&app), Some((json!(true), json!(false))));
+        click(&mut app, &ctx, "Strokes");
+        assert_eq!(create(&app), Some((json!(true), json!(true))), "traced again with strokes");
+        click(&mut app, &ctx, "Fills");
+        assert_eq!(create(&app), Some((json!(false), json!(true))));
+        click(&mut app, &ctx, "Strokes");
+        assert_eq!(create(&app), Some((json!(false), json!(true))), "Strokes alone stays on");
+    }
 
     #[test]
     fn panel_and_menu_draw_headless() {
@@ -266,6 +504,7 @@ mod tests {
         app.session.execute("shape.rectangle", &json!({"x": 0, "y": 0, "width": 10, "height": 10})).unwrap();
         for _ in 0..2 {
             let ctx = egui::Context::default();
+            crate::theme::install_fonts(&ctx);
             let mut out = ctx.run_ui(egui::RawInput::default(), |ui| {
                 show(&mut app, ui);
                 menu(&mut app, ui);

crates/ui-egui/src/panels/properties.rs

@@ -3,6 +3,7 @@
 use egui::Ui;
 use serde_json::json;
 use vectorcraft_doc::{LiveShape, NodeKind, Unit};
+use vectorcraft_engine::cmd::newdoc;
 
 use super::{corner_radius_row, first_selected, pstate, set_pstate};
 use crate::theme::Tokens;
@@ -44,8 +45,8 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
         image_section(app, ui);
         divider(ui);
     }
-    if let Some(preset) = crate::panels::image_trace::selected_preset(app) {
-        trace_section(app, ui, &preset);
+    if let Some((preset, view)) = crate::panels::image_trace::selected_trace(app) {
+        trace_section(app, ui, &preset, view);
         divider(ui);
     }
     if matches!(first.as_ref().map(|n| &n.kind), Some(NodeKind::Text(_))) {
@@ -162,13 +163,14 @@ fn image_section(app: &mut VectorcraftApp, ui: &mut Ui) {
 }
 
 /// The one selected Image Trace object: its preset (choosing another traces it again with that
-/// one), Expand and Release.
-fn trace_section(app: &mut VectorcraftApp, ui: &mut Ui, preset: &str) {
+/// one), view, Expand and Release.
+fn trace_section(app: &mut VectorcraftApp, ui: &mut Ui, preset: &str, view: vectorcraft_doc::TraceView) {
     section_header(ui, tl!("Image Trace"));
     ui.horizontal(|ui| {
         dim_label(ui, tl!("Preset:"));
         crate::panels::image_trace::preset_dropdown(app, ui, preset, ui.available_width());
     });
+    ui.horizontal(|ui| crate::panels::image_trace::view_row(app, ui, view, ui.available_width()));
     let w = (ui.available_width() - 6.0) / 2.0;
     ui.horizontal(|ui| {
         for (label, id) in [(tl!("Expand"), "imageTrace.expand"), (tl!("Release"), "imageTrace.release")] {
@@ -195,8 +197,9 @@ fn multi_color(app: &mut VectorcraftApp, ctx: &egui::Context) -> bool {
     }
 }
 
-/// Edit Artboards (the Artboard tool): the active artboard's name, position and size, New Artboard
-/// and Delete Artboard, and Exit back to the Selection tool (#530).
+/// Edit Artboards (the Artboard tool): the active artboard's name, position and size, its preset and
+/// orientation (#671), New Artboard and Delete Artboard, and Quick Actions: Rearrange All (#681) and
+/// Exit back to the Selection tool (#530).
 fn artboard_sections(app: &mut VectorcraftApp, ui: &mut Ui) {
     let units = app.session.general_unit();
     let n = app.session.active().map_or(0, |d| d.doc.artboards.len());
@@ -219,6 +222,7 @@ fn artboard_sections(app: &mut VectorcraftApp, ui: &mut Ui) {
                 ui.end_row();
             }
         });
+        artboard_size_row(app, ui, i, ab.rect.width(), ab.rect.height());
     }
     ui.add_space(4.0);
     let w = (ui.available_width() - 6.0) / 2.0;
@@ -232,8 +236,67 @@ fn artboard_sections(app: &mut VectorcraftApp, ui: &mut Ui) {
     });
     divider(ui);
     section_header(ui, tl!("Quick Actions"));
-    if widgets::flat_button(ui, tl!("Exit"), w).clicked() {
-        app.select_tool("selection");
+    ui.horizontal(|ui| {
+        rearrange_button(app, ui, n, w);
+        if widgets::flat_button(ui, tl!("Exit"), w).clicked() {
+            app.select_tool("selection");
+        }
+    });
+}
+
+/// Rearrange All (#681): opens Rearrange All Artboards; disabled with fewer than two artboards.
+fn rearrange_button(app: &mut VectorcraftApp, ui: &mut Ui, artboards: usize, w: f32) {
+    if ui.add_enabled_ui(artboards > 1, |ui| widgets::flat_button(ui, tl!("Rearrange All"), w)).inner.clicked() {
+        super::artboards::open_rearrange(app);
+    }
+}
+
+/// Artboard `i`'s size preset (New Document's saved and built-in presets, by category, either way
+/// round; Custom when its `w` × `h` points match none) and its orientation. A preset sizes it in its
+/// current orientation; the other orientation swaps its width and height. Its top-left corner stays
+/// put either way.
+fn artboard_size_row(app: &mut VectorcraftApp, ui: &mut Ui, i: usize, w: f64, h: f64) {
+    let landscape = w > h;
+    // A preset `pw` × `ph` turned to the artboard's orientation.
+    let turned = |pw: f64, ph: f64| if (pw > ph) == landscape || pw == ph { (pw, ph) } else { (ph, pw) };
+    let same = |s: &newdoc::DocSettings| {
+        let (pw, ph) = turned(s.width, s.height);
+        (pw - w).abs() < 0.01 && (ph - h).abs() < 0.01
+    };
+    // Recent holds documents made, not presets.
+    let cats: Vec<(&str, Vec<newdoc::DocSettings>)> = newdoc::category_names()
+        .filter(|c| !c.eq_ignore_ascii_case("Recent"))
+        .filter_map(|c| Some((c, newdoc::category(&app.session, c)?)))
+        .filter(|(_, l)| !l.is_empty())
+        .collect();
+    let current = cats.iter().flat_map(|(_, l)| l).find(|s| same(s)).map_or(tl!("Custom"), |s| crate::dialogs::preset_name(&s.name)).to_string();
+    let mut size = None;
+    ui.horizontal(|ui| {
+        dim_label(ui, tl!("Preset:"));
+        size = widgets::combo(ui, "ab-preset", &current, 140.0, false, |ui| {
+            let mut chosen = None;
+            for (cat, list) in &cats {
+                ui.menu_button(tl!(cat), |ui| {
+                    widgets::menu_scroll(ui, |ui| {
+                        for s in list {
+                            if widgets::menu_item_name(ui, crate::dialogs::preset_name(&s.name), true, same(s)) {
+                                chosen = Some(turned(s.width, s.height));
+                            }
+                        }
+                    });
+                });
+            }
+            chosen
+        });
+        ui.spacing_mut().item_spacing.x = 2.0;
+        for (is_landscape, tip) in [(false, tl!("Portrait")), (true, tl!("Landscape"))] {
+            if widgets::orientation_button(ui, is_landscape, landscape == is_landscape, tip) && landscape != is_landscape {
+                size = Some((h, w));
+            }
+        }
+    });
+    if let Some((width, height)) = size {
+        app.run("artboard.setProps", json!({"index": i, "width": width, "height": height})).ok();
     }
 }
 
@@ -256,6 +319,10 @@ fn document_sections(app: &mut VectorcraftApp, ui: &mut Ui) {
             app.select_tool("artboard");
         }
     });
+    let artboards = app.session.active().map_or(0, |d| d.doc.artboards.len());
+    if artboards > 1 {
+        rearrange_button(app, ui, artboards, w);
+    }
     divider(ui);
     section_header(ui, tl!("Appearance"));
     fill_stroke_rows(app, ui);
@@ -519,4 +586,61 @@ mod tests {
         click(&mut app, &ctx, &texts, "Exit");
         assert_eq!(app.session.tool_id(), "selection");
     }
+
+    /// #681: Rearrange All opens Rearrange All Artboards in one click, from the Document section
+    /// (only with several artboards) and from Edit Artboards' Quick Actions.
+    #[test]
+    fn rearrange_all_opens_the_dialog() {
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.run("file.new", json!({"width": 200, "height": 100})).unwrap();
+        let ctx = egui::Context::default();
+        assert!(!frame(&mut app, &ctx, vec![]).iter().any(|(t, _)| t == "Rearrange All"), "one artboard: nothing to rearrange");
+        app.run("artboard.new", json!({})).unwrap();
+        let texts = frame(&mut app, &ctx, vec![]);
+        click(&mut app, &ctx, &texts, "Rearrange All");
+        let kind = |app: &VectorcraftApp| app.ui.dialog.as_ref().map(|d| d.kind.clone());
+        assert_eq!(kind(&app).as_deref(), Some(crate::dialogs::rearrange_artboards::KIND));
+        app.ui.dialog = None;
+        app.select_tool("artboard");
+        let texts = frame(&mut app, &ctx, vec![]);
+        click(&mut app, &ctx, &texts, "Rearrange All");
+        assert_eq!(kind(&app).as_deref(), Some(crate::dialogs::rearrange_artboards::KIND));
+    }
+
+    /// #671: Edit Artboards shows the artboard's preset (Custom when it matches none) and its
+    /// orientation; the other orientation swaps its width and height, its corner staying put.
+    #[test]
+    fn edit_artboards_shows_the_preset_and_flips_the_orientation() {
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.run("file.new", json!({"preset": "Letter"})).unwrap();
+        app.run("artboard.setProps", json!({"index": 0, "x": 10, "y": 20})).unwrap();
+        app.select_tool("artboard");
+        let ctx = egui::Context::default();
+        let texts = frame(&mut app, &ctx, vec![]);
+        assert!(texts.iter().any(|(t, _)| t == "Preset:") && texts.iter().any(|(t, _)| t == "Letter"), "{texts:?}");
+        // The row's clickable widgets, left to right: the preset combo, Portrait, Landscape.
+        let row = texts.iter().find(|(t, _)| t == "Preset:").map(|(_, r)| *r).unwrap();
+        let buttons: Vec<Rect> = ctx.viewport(|vp| {
+            let mut r: Vec<Rect> = vp
+                .prev_pass
+                .widgets
+                .layers()
+                .flat_map(|(_, w)| w.iter())
+                .filter(|w| w.sense.senses_click() && w.rect.y_range().contains(row.center().y) && w.rect.left() > row.right())
+                .map(|w| w.rect)
+                .collect();
+            r.sort_by(|a, b| a.left().total_cmp(&b.left()));
+            r
+        });
+        let landscape = buttons.last().unwrap().center();
+        let press = |pressed| Event::PointerButton { pos: landscape, button: egui::PointerButton::Primary, pressed, modifiers: Default::default() };
+        frame(&mut app, &ctx, vec![Event::PointerMoved(landscape), press(true)]);
+        frame(&mut app, &ctx, vec![press(false)]);
+        let rect = app.session.active().unwrap().doc.artboards[0].rect;
+        assert_eq!((rect.x0, rect.y0, rect.width(), rect.height()), (10.0, 20.0, 792.0, 612.0), "landscape, same corner");
+        let texts = frame(&mut app, &ctx, vec![]);
+        assert!(texts.iter().any(|(t, _)| t == "Letter"), "still Letter, turned: {texts:?}");
+        app.run("artboard.setProps", json!({"index": 0, "width": 333})).unwrap();
+        assert!(frame(&mut app, &ctx, vec![]).iter().any(|(t, _)| t == "Custom"));
+    }
 }

crates/ui-egui/src/prefs_dialog.rs

@@ -80,13 +80,26 @@ pub fn restore(app: &mut VectorcraftApp) {
 #[derive(Clone, Copy, PartialEq)]
 struct Applied {
     brightness: Brightness,
-    white_canvas: bool,
+    /// User Interface › Canvas Color, unless it matches the interface brightness.
+    canvas: Option<egui::Color32>,
     threads: i32,
     tool_tips: bool,
     scrub: bool,
     bare_points: bool,
 }
 
+/// User Interface › Canvas Color: the canvas around the artboards, or `None` to match the
+/// interface brightness. The greys keep the white page's edge in view (#663).
+fn canvas_color(key: &str) -> Option<egui::Color32> {
+    match key {
+        "white" => Some(egui::Color32::WHITE),
+        "lightGray" => Some(egui::Color32::from_gray(0xc8)),
+        "mediumGray" => Some(egui::Color32::from_gray(0x96)),
+        "darkGray" => Some(egui::Color32::from_gray(0x5a)),
+        _ => None,
+    }
+}
+
 /// Per frame: push UI-side preferences into egui / the renderer when they change.
 pub fn apply_runtime(app: &mut VectorcraftApp, ctx: &egui::Context) {
     let p = &app.session.prefs;
@@ -97,7 +110,7 @@ pub fn apply_runtime(app: &mut VectorcraftApp, ctx: &egui::Context) {
     }
     let want = Applied {
         brightness: app.ui.brightness,
-        white_canvas: p.canvas_color == "white",
+        canvas: canvas_color(&p.canvas_color),
         threads: p.render_threads,
         tool_tips: p.show_tool_tips,
         scrub: p.scrub_numeric_fields,
@@ -113,9 +126,9 @@ pub fn apply_runtime(app: &mut VectorcraftApp, ctx: &egui::Context) {
         ctx.global_style_mut(|s| s.interaction.tooltip_delay = delay);
         crate::scrub::set_enabled(ctx, want.scrub);
         crate::widgets::set_bare_numbers_are_points(ctx, want.bare_points);
-        if want.white_canvas {
+        if let Some(c) = want.canvas {
             let mut t = Tokens::get(ctx);
-            t.pasteboard = egui::Color32::WHITE;
+            t.pasteboard = c;
             ctx.data_mut(|d| d.insert_temp(egui::Id::NULL, t));
         }
         if prev.is_some_and(|pr| pr.threads != want.threads) {
@@ -244,6 +257,10 @@ fn category_fields(ui: &mut egui::Ui, d: &mut Dialog, cat: &str) {
             PrefKind::Bool if sp.key == "numbersWithoutUnitsArePoints" => {
                 ui.add_enabled_ui(picas_in_use(d), |ui| bool_row(ui, d, sp.key, sp.label));
             }
+            // Performance › Animated Zoom needs GPU Performance: dimmed while it is off.
+            PrefKind::Bool if sp.key == "animatedZoom" => {
+                ui.add_enabled_ui(d.bool("gpuPerformance"), |ui| bool_row(ui, d, sp.key, sp.label));
+            }
             PrefKind::Bool => bool_row(ui, d, sp.key, sp.label),
             PrefKind::Num { min, max, unit } => {
                 labeled(ui, sp.label, |ui| {
@@ -361,6 +378,28 @@ mod tests {
     use crate::Services;
     use vectorcraft_engine::Session;
 
+    /// User Interface › Canvas Color (#663): White and the three greys paint the canvas around the
+    /// artboards; Match User Interface Brightness keeps the theme's.
+    #[test]
+    fn canvas_color_choices_paint_the_pasteboard() {
+        let mut app = VectorcraftApp::new(Session::new(), Services::default());
+        let ctx = egui::Context::default();
+        apply_runtime(&mut app, &ctx);
+        let themed = Tokens::get(&ctx).pasteboard;
+        for (key, want) in [
+            ("white", egui::Color32::WHITE),
+            ("lightGray", egui::Color32::from_gray(0xc8)),
+            ("mediumGray", egui::Color32::from_gray(0x96)),
+            ("darkGray", egui::Color32::from_gray(0x5a)),
+            ("matchUi", themed),
+        ] {
+            app.run("prefs.set", serde_json::json!({"key": "canvasColor", "value": key})).unwrap();
+            apply_runtime(&mut app, &ctx);
+            assert_eq!(Tokens::get(&ctx).pasteboard, want, "{key}");
+        }
+        assert!(app.run("prefs.set", serde_json::json!({"key": "canvasColor", "value": "pink"})).is_err());
+    }
+
     fn app() -> VectorcraftApp {
         VectorcraftApp::new(Session::new(), Services::default())
     }

crates/ui-egui/src/shortcuts.rs

@@ -73,6 +73,7 @@ pub(crate) fn all_shortcuts() -> Vec<(KeyboardShortcut, &'static str, serde_json
             v.push((sc, "window.panel", json!({ "panel": panel })));
         }
     }
+    settings_chord(&mut v, cfg!(target_os = "macos"));
     // Most specific (most modifiers) first so Cmd+Shift+Z isn't eaten by Cmd+Z.
     v.sort_by_key(|(sc, ..)| {
         std::cmp::Reverse(sc.modifiers.shift as u8 + sc.modifiers.alt as u8 + sc.modifiers.command as u8 + sc.modifiers.ctrl as u8)
@@ -80,6 +81,14 @@ pub(crate) fn all_shortcuts() -> Vec<(KeyboardShortcut, &'static str, serde_json
     v
 }
 
+/// On a Mac, Cmd+, opens Settings as in every Mac app (#663), beside Preferences' own shortcut,
+/// unless a command or a user's shortcut already took it.
+fn settings_chord(v: &mut Vec<(KeyboardShortcut, &'static str, serde_json::Value)>, mac: bool) {
+    if let Some(sc) = parse("Cmd+,").filter(|sc| mac && !v.iter().any(|(s, ..)| s == sc)) {
+        v.push((sc, "edit.preferences", json!({})));
+    }
+}
+
 /// Consume a press of `sc`. A `=` chord also takes [`Key::Plus`], which is how `+` arrives from
 /// the numpad and from layouts where it has its own key (Shift+`=` arrives as either; extra Shift
 /// is ignored).
@@ -687,6 +696,24 @@ mod tests {
         assert_eq!(digit_of(Key::A), None);
     }
 
+    /// Cmd+, opens Settings on a Mac only, and never takes a chord a command already has.
+    #[test]
+    fn cmd_comma_opens_settings_on_a_mac() {
+        let comma = parse("Cmd+,").unwrap();
+        let mut v = vec![];
+        super::settings_chord(&mut v, false);
+        assert!(v.is_empty(), "not elsewhere");
+        super::settings_chord(&mut v, true);
+        assert_eq!(v.len(), 1);
+        assert_eq!((v[0].0, v[0].1), (comma, "edit.preferences"));
+        let mut taken = vec![(comma, "view.zoomIn", json!({}))];
+        super::settings_chord(&mut taken, true);
+        assert_eq!(taken.len(), 1, "a command that has it keeps it");
+        if cfg!(target_os = "macos") {
+            assert!(super::all_shortcuts().iter().any(|(sc, id, _)| *sc == comma && *id == "edit.preferences"));
+        }
+    }
+
     #[test]
     fn parses() {
         let s = parse("Cmd+Shift+]").unwrap();

crates/ui-egui/src/state.rs

@@ -365,6 +365,9 @@ pub struct UiState {
     /// Layers panel › Panel Options… (row size, thumbnails, Show Layers Only).
     #[serde(default)]
     pub layers_panel: crate::panels::layers::PanelOptions,
+    /// The Image Trace panel's Advanced section is open (as it was last left).
+    #[serde(default = "yes")]
+    pub image_trace_advanced: bool,
     /// The desktop window's size, position and maximized state, saved when the app quits and
     /// restored at the next launch (the desktop host reads and writes it; none on the web).
     #[serde(default, skip_serializing_if = "Option::is_none")]
@@ -518,6 +521,7 @@ impl Default for UiState {
             dxf_import: Value::Null,
             home: None,
             layers_panel: Default::default(),
+            image_trace_advanced: true,
             window: None,
         }
     }

crates/ui-egui/src/tests_home.rs

@@ -90,3 +90,46 @@ fn cmd_n_opens_the_new_document_dialog() {
     assert_eq!(app.ui.dialog.as_ref().map(|d| d.kind.as_str()), Some("newDocument"));
     assert_eq!(app.session.documents().len(), 1, "no document is made until the dialog's OK");
 }
+
+/// One Home screen frame (no document open) with `events`: the texts drawn and where.
+fn home_texts(app: &mut VectorcraftApp, ctx: &egui::Context, events: Vec<egui::Event>) -> Vec<(String, egui::Rect)> {
+    fn walk(s: &egui::Shape, out: &mut Vec<(String, egui::Rect)>) {
+        match s {
+            egui::Shape::Text(t) => out.push((t.galley.text().to_string(), t.visual_bounding_rect())),
+            egui::Shape::Vec(v) => v.iter().for_each(|s| walk(s, out)),
+            _ => {}
+        }
+    }
+    let raw =
+        egui::RawInput { screen_rect: Some(egui::Rect::from_min_size(egui::Pos2::ZERO, egui::vec2(1000.0, 900.0))), events, ..Default::default() };
+    let mut out = ctx.run_ui(raw, |ui| canvas::show(app, ui));
+    out.textures_delta.clear();
+    let mut texts = vec![];
+    out.shapes.iter().for_each(|c| walk(&c.shape, &mut texts));
+    texts
+}
+
+/// The Home screen lists the first recent files (#663), each by name and folder; a click opens it,
+/// and one that can't be opened says so. With none, there is no Recent Files section.
+#[test]
+fn home_lists_recent_files_and_a_click_opens_one() {
+    let mut app = VectorcraftApp::new(vectorcraft_engine::Session::new(), crate::Services::default());
+    let ctx = egui::Context::default();
+    crate::theme::install_fonts(&ctx);
+    let has = |texts: &[(String, egui::Rect)], s: &str| texts.iter().any(|(t, _)| t == s);
+    assert!(!has(&home_texts(&mut app, &ctx, vec![]), "Recent Files"), "none: no section");
+    let dir = std::env::temp_dir().join("vectorcraft-home-recent");
+    let missing = dir.join("Gone.svg").to_string_lossy().into_owned();
+    app.ui.recent_files = (0..9).map(|i| dir.join(format!("Drawing {i}.svg")).to_string_lossy().into_owned()).collect();
+    app.ui.recent_files.insert(0, missing);
+    let texts = home_texts(&mut app, &ctx, vec![]);
+    assert!(has(&texts, "Recent Files") && has(&texts, "Gone.svg") && has(&texts, "Drawing 4.svg"), "{texts:?}");
+    assert!(!has(&texts, "Drawing 5.svg"), "the first six only");
+    assert!(has(&texts, &dir.to_string_lossy()), "with its folder");
+    let at = texts.iter().find(|(t, _)| t == "Gone.svg").map(|(_, r)| r.center()).unwrap();
+    let press = |pressed| egui::Event::PointerButton { pos: at, button: egui::PointerButton::Primary, pressed, modifiers: Default::default() };
+    home_texts(&mut app, &ctx, vec![egui::Event::PointerMoved(at), press(true)]);
+    home_texts(&mut app, &ctx, vec![press(false)]);
+    assert!(app.session.documents().is_empty());
+    assert!(!app.ui.status.is_empty(), "a file that can't be opened says so");
+}

crates/ui-egui/src/tests_place.rs

@@ -308,7 +308,8 @@ fn click_label(app: &mut VectorcraftApp, ctx: &egui::Context, label: &str) {
 
 #[test]
 fn the_control_bar_and_properties_trace_a_selected_image() {
-    use crate::panels::image_trace::{TRACE_BUTTON_W, selected_preset};
+    use crate::panels::image_trace::{TRACE_BUTTON_W, selected_trace};
+    let selected_preset = |app: &VectorcraftApp| selected_trace(app).map(|t| t.0);
     use crate::tests_removeanchors::{at, click_control, control_frame, has, properties_frame};
     let mut app = app();
     let data = vectorcraft_format::base64_encode(&png(30, 30, 72.0));
@@ -332,19 +333,27 @@ fn the_control_bar_and_properties_trace_a_selected_image() {
     app.run("edit.undo", json!({})).unwrap();
     click_label(&mut app, &ctx, "Image Trace");
     assert_eq!(selected_preset(&app).as_deref(), Some("Default"));
-    // An Image Trace object: its preset (another traces it again), the panel and Expand.
+    // An Image Trace object: its preset (another traces it again), view, the panel and Expand.
     let bar = control_frame(&mut app, &ctx, vec![]);
-    for s in ["Image Tracing", "Preset:", "Default", "Expand"] {
+    for s in ["Image Tracing", "Preset:", "Default", "View:", "Tracing Result", "Expand"] {
         assert!(has(&bar, s), "{s}");
     }
-    assert!(has(&properties_frame(&mut app, 260.0), "Release"));
+    let props = properties_frame(&mut app, 260.0);
+    assert!(has(&props, "Release") && has(&props, "View:"));
+    // Another view redraws it without tracing again.
+    let traced = app.session.active().unwrap().selection.objects.clone();
+    click_control(&mut app, &ctx, at(&bar, "Tracing Result"));
+    click_label(&mut app, &ctx, "Outlines with Source Image");
+    assert_eq!(selected_trace(&app).map(|t| t.1), Some(vectorcraft_doc::TraceView::OutlinesWithSource));
+    assert_eq!(app.session.active().unwrap().selection.objects, traced, "the same object");
+    let bar = control_frame(&mut app, &ctx, vec![]);
     click_control(&mut app, &ctx, at(&bar, "Default"));
     click_label(&mut app, &ctx, "3 Colors");
     assert_eq!(selected_preset(&app).as_deref(), Some("3 Colors"));
     click_label(&mut app, &ctx, "Expand");
     let st = app.session.active().unwrap();
     let g = st.doc.node(st.selection.objects[0]).unwrap();
-    assert!(selected_preset(&app).is_none() && g.children().unwrap().iter().all(|c| !matches!(c.kind, NodeKind::Image(_))), "expanded");
+    assert!(selected_trace(&app).is_none() && g.children().unwrap().iter().all(|c| !matches!(c.kind, NodeKind::Image(_))), "expanded");
 }
 
 #[test]

crates/ui-egui/src/tests_removeanchors.rs

@@ -37,7 +37,7 @@ fn labels(items: &[Item]) -> Vec<&'static str> {
         .collect()
 }
 
-fn shapes_text(shapes: &[Shape]) -> Vec<(String, Rect)> {
+pub(crate) fn shapes_text(shapes: &[Shape]) -> Vec<(String, Rect)> {
     fn walk(s: &Shape, v: &mut Vec<(String, Rect)>) {
         match s {
             Shape::Text(t) => v.push((t.galley.text().to_string(), Rect::from_min_size(t.pos, t.galley.size()))),

crates/ui-egui/src/tests_slices.rs

@@ -78,7 +78,7 @@ fn slice_tool_cursors_are_drawn_in_code() {
     let ctx = egui::Context::default();
     let mut out = ctx.run_ui(Default::default(), |ui| {
         for c in [vectorcraft_tools::Cursor::Slice, vectorcraft_tools::Cursor::SliceSelect] {
-            assert!(crate::cursors::paint(ui.painter(), c, egui::pos2(50.0, 50.0)), "{c:?}");
+            assert!(crate::cursors::paint(ui.painter(), c, egui::pos2(50.0, 50.0), 1.0), "{c:?}");
         }
     });
     out.textures_delta.clear();

crates/ui-egui/src/tests_widthtool.rs

@@ -12,7 +12,7 @@ fn the_width_tool_has_its_own_cursors() {
     let mut out = ctx.run_ui(egui::RawInput::default(), |ui| {
         let painter = ui.painter().clone();
         for c in [Cursor::Width, Cursor::WidthAdd, Cursor::WidthPoint] {
-            assert!(crate::cursors::paint(&painter, c, egui::pos2(50.0, 50.0)), "{c:?} is drawn");
+            assert!(crate::cursors::paint(&painter, c, egui::pos2(50.0, 50.0), 1.0), "{c:?} is drawn");
         }
     });
     out.textures_delta.clear();

crates/ui-egui/src/toolbar.rs

@@ -169,7 +169,11 @@ fn body(app: &mut VectorcraftApp, ui: &mut Ui, cols: usize, floating: Option<egu
         let mut raise: Option<&'static str> = None;
         let mut i = 0;
         while i < all.len() {
-            if let Some(cat) = all[i].0 {
+            if all[i].0.is_some() && !app.session.prefs.tool_group_labels {
+                // User Interface › Show Tool Group Labels off: a faint dash between the groups.
+                let (r, _) = ui.allocate_exact_size(vec2(ui.available_width(), 9.0), Sense::hover());
+                ui.painter().line_segment([r.center() - vec2(6.0, 0.0), r.center() + vec2(6.0, 0.0)], egui::Stroke::new(1.0, t.divider));
+            } else if let Some(cat) = all[i].0 {
                 let (r, _) = ui.allocate_exact_size(vec2(ui.available_width(), 18.0), Sense::hover());
                 // A long name is cut to its first four characters in the single column.
                 let cat = tl!(cat);
@@ -1205,6 +1209,35 @@ pub(crate) mod tests {
         assert!(r.min.x.is_finite() && r.min.y.is_finite() && r.left() >= 0.0, "on screen: {r:?}");
     }
 
+    /// User Interface › Show Tool Group Labels (#663): on, the toolbar names its groups; off, it
+    /// shows none of the names, a faint dash between the groups instead.
+    #[test]
+    fn tool_group_labels_can_be_hidden() {
+        fn texts(s: &egui::Shape, out: &mut Vec<String>) {
+            match s {
+                egui::Shape::Text(t) => out.push(t.galley.text().to_string()),
+                egui::Shape::Vec(v) => v.iter().for_each(|s| texts(s, out)),
+                _ => {}
+            }
+        }
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        let draw = |app: &mut VectorcraftApp| {
+            let raw = egui::RawInput { screen_rect: Some(egui::Rect::from_min_size(Pos2::ZERO, vec2(400.0, 1600.0))), ..Default::default() };
+            let mut out = ctx.run_ui(raw, |ui| show(app, ui));
+            out.textures_delta.clear();
+            let mut shown = vec![];
+            out.shapes.iter().for_each(|c| texts(&c.shape, &mut shown));
+            shown
+        };
+        let with = draw(&mut app);
+        assert!(with.iter().any(|t| t == "Shapes") && with.iter().any(|t| t == "Draw"), "{with:?}");
+        app.run("prefs.set", json!({"key": "toolGroupLabels", "value": false})).unwrap();
+        let without = draw(&mut app);
+        assert!(!without.iter().any(|t| ["Select", "Shapes", "Draw", "Modify", "Type"].contains(&t.as_str())), "{without:?}");
+    }
+
     /// Hover `at` for two seconds, coming from elsewhere: the texts painted meanwhile.
     fn hovered_texts(app: &mut VectorcraftApp, ctx: &egui::Context, t0: f64, at: Pos2) -> Vec<String> {
         fn texts(s: &egui::Shape, out: &mut Vec<String>) {

crates/ui-egui/src/widgets.rs

@@ -121,6 +121,21 @@ pub fn section_header(ui: &mut Ui, text: &str) {
     ui.add_space(2.0);
 }
 
+/// A collapsible section's header across the panel: a chevron (down while `open`) and `text`;
+/// a click anywhere on it toggles the section. Whether it was clicked.
+pub fn section_toggle(ui: &mut Ui, text: &str, open: bool) -> bool {
+    let t = Tokens::get(ui.ctx());
+    let (rect, resp) = ui.allocate_exact_size(vec2(ui.available_width(), 24.0), Sense::click());
+    if resp.hovered() {
+        ui.painter().rect_filled(rect, 3.0, t.hover);
+    }
+    let chevron = Rect::from_center_size(pos2(rect.left() + 8.0, rect.center().y), vec2(12.0, 12.0));
+    icons::paint(ui, if open { "chevron-down" } else { "chevron-right" }, chevron, if resp.hovered() { t.text_strong } else { t.icon });
+    ui.painter().text(pos2(rect.left() + 18.0, rect.center().y), egui::Align2::LEFT_CENTER, tl!(text), theme::semibold(12.5), t.text);
+    resp.widget_info(|| egui::WidgetInfo::selected(egui::WidgetType::CollapsingHeader, true, open, tl!(text)));
+    resp.on_hover_cursor(egui::CursorIcon::PointingHand).clicked()
+}
+
 /// Full-width 1 px divider with vertical margins.
 pub fn divider(ui: &mut Ui) {
     let t = Tokens::get(ui.ctx());
@@ -1679,6 +1694,51 @@ pub fn orientation_button(ui: &mut Ui, landscape: bool, selected: bool, tip: &st
     resp.on_hover_text(tl!(tip)).clicked()
 }
 
+/// An artboard-layout toggle drawn in code (Rearrange All Artboards): small artboards in the grid
+/// cells `tiles` (column, row), tinted, and over them their order as a line from a dot on the first
+/// to an arrowhead on the last; accent-drawn in a pressed well when `selected`, greyed in a disabled
+/// `ui`. `tip` is shown as it is (the caller translates it). Returns clicked.
+pub fn layout_button(ui: &mut Ui, tiles: &[(u8, u8)], selected: bool, tip: &str) -> bool {
+    let t = Tokens::get(ui.ctx());
+    let (rect, resp) = ui.allocate_exact_size(Vec2::splat(26.0), Sense::click());
+    let enabled = ui.is_enabled();
+    let bg = if selected {
+        t.tool_active
+    } else if resp.hovered() && enabled {
+        t.hover
+    } else {
+        Color32::TRANSPARENT
+    };
+    ui.painter().rect_filled(rect, CornerRadius::same(3), bg);
+    let color = if !enabled {
+        t.text_disabled
+    } else if selected {
+        t.accent
+    } else {
+        t.icon
+    };
+    // Cells at most 10 points a side in a 20-point square: a row's artboards stand tall, a
+    // column's lie flat.
+    let (cols, rows) = tiles.iter().fold((1u8, 1u8), |(c, r), &(x, y)| (c.max(x.saturating_add(1)), r.max(y.saturating_add(1))));
+    let cell = vec2((20.0 / f32::from(cols)).min(10.0), (20.0 / f32::from(rows)).min(10.0));
+    let origin = rect.center() - vec2(f32::from(cols) * cell.x, f32::from(rows) * cell.y) / 2.0;
+    let centre = |&(x, y): &(u8, u8)| origin + vec2((f32::from(x) + 0.5) * cell.x, (f32::from(y) + 0.5) * cell.y);
+    for tile in tiles {
+        ui.painter().rect_filled(Rect::from_center_size(centre(tile), cell - vec2(2.0, 2.0)), 1.0, color.gamma_multiply(0.35));
+    }
+    let path: Vec<Pos2> = tiles.iter().map(centre).collect();
+    if let ([first, ..], [.., from, to]) = (path.as_slice(), path.as_slice()) {
+        let (first, from, to) = (*first, *from, *to);
+        let dir = (to - from).normalized();
+        let side = dir.rot90() * 2.5;
+        let head = vec![to + dir * 1.5, to - dir * 2.5 + side, to - dir * 2.5 - side];
+        ui.painter().circle_filled(first, 1.6, color);
+        ui.painter().add(egui::Shape::line(path, Stroke::new(1.2, color)));
+        ui.painter().add(egui::Shape::convex_polygon(head, color, Stroke::NONE));
+    }
+    resp.on_hover_text(tip).clicked()
+}
+
 /// `region` of `doc` rendered on white, its longest side `px` pixels, as a texture named `name`
 /// (artboard and page thumbnails).
 pub fn region_texture(

docs/development.md

@@ -43,11 +43,12 @@ The canvas is rasterized on the CPU (`vectorcraft-render`, vello_cpu); the GPU (
   - **Automatic on Windows and macOS** is power saving: the system shows frames from any GPU, and presenting frames rendered on a discrete GPU through the integrated one made the window flicker on some hybrid laptops (#306).
   - **Automatic on Linux and the BSDs** keeps the system's order: Mesa's Vulkan device-select layer puts the GPU the desktop runs on first (the integrated one on hybrid laptops; `DRI_PRIME` and `MESA_VK_DEVICE_SELECT` steer it). A Wayland compositor may not accept frames from another GPU: on a desktop whose compositor ran on an NVIDIA GPU, rendering on the Ryzen's integrated GPU made KWin end the window's connection ("importing the supplied dmabufs failed") and 0.5.0 crashed at startup (#502).
   - 0.5.0 saved `powerSaving`, its default, for everyone; it reads as `automatic`.
-- **If the window fails on its adapter while starting up** (an error from wgpu, or a panic inside wgpu or egui-wgpu during the first frames), the app starts again without that adapter and tries the next one, telling which in the status bar; the run that failed keeps its log as `vectorcraft.1.log`. On Unix the new app replaces the process (an AppImage stays mounted); on Windows it starts beside it. The adapters left out travel in `VECTORCRAFT_GPU_SKIP` (`backend:vendor:device`, such as `Vulkan:1002:164e`), one more on each restart, so the restarts end. When no adapter is left, the app logs why and exits with an error instead of panicking.
+- **If the window fails on its adapter while starting up** (an error from wgpu, or a panic inside wgpu or egui-wgpu during the first frames), the app starts again without that adapter and tries the next one, telling which in the status bar; the run that failed keeps its log as `vectorcraft.1.log`. On Unix the new app replaces the process (an AppImage stays mounted); on Windows it starts beside it. Adapters are told apart by backend and PCI ids, or by name where the backend reports no ids (Metal lists every GPU of a dual-GPU Mac as `0000:0000`, #651). The adapters left out travel in `VECTORCRAFT_GPU_SKIP` (`backend:vendor:device`, such as `Vulkan:1002:164e`), one more on each restart, so the restarts end. When no adapter is left, the app logs why and exits with an error instead of panicking.
 - **Environment variables** for when the choice still goes wrong, all read at startup and stronger than the preference:
   - `WGPU_POWER_PREF`: `low`, `high` or `none` (the system's order).
   - `WGPU_ADAPTER_NAME`: part of an adapter's name, any case (`WGPU_ADAPTER_NAME=nvidia`, `=radv`, `=intel`); the names are in the log.
   - `WGPU_BACKEND`: the backends to use, such as `vulkan`, `dx12`, `metal` or `gl`.
+  - `WGPU_VALIDATION_INDIRECT_CALL=1`: turns wgpu's check of indirect draw arguments back on. VectorCraft draws nothing indirectly and turns it off, since the compute shader it needs fails to compile on some drivers (#651).
   - On Linux with Mesa, `MESA_VK_DEVICE_SELECT=10de:2f04!` (vendor:device as `vulkaninfo --summary` or `lspci -nn` show it) leaves only that GPU to Vulkan, and `DRI_PRIME=1` picks the other GPU.
 - Help › About and the control channel's `ui.inspect` (`graphicsAdapter`) show the adapter in use, and the app logs it at startup.