Fix #264: double-clicking Hand, Zoom and the transform tools works

A double-click on a tool button runs tool.options, which only knew a few
tools, so the common double-clicks did nothing: the Hand tool now fits
the artboard in the window, the Zoom tool shows 100%, and Rotate, Scale,
Reflect and Shear open their Object > Transform dialog (when something
is selected, like the menu items).

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

ROADMAP.md

@@ -110,6 +110,7 @@ grade by behaviour against `plan/illustrator/`, not by whether a menu item exist
   - **Live Corners:** drag a live rectangle's corner widgets (Selection or Direct Selection) to round all corners, with a radius readout.
   - **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, Measure, Type, Hand, Zoom, Rotate View.
+  - **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, Gradient, Eyedropper, Blend and the Liquify tools their panels or options.
 - **Drawing aids:** Smart Guides and snapping, guides dragged out of the rulers, and Draw Normal / Behind / Inside modes.
 - **Geometry and effects:**
   - Pathfinder (10 exact curve booleans), Offset, Outline Stroke, Simplify, Clean Up, Split Into Grid, Divide Objects Below.

crates/ui-egui/src/menus.rs

@@ -239,7 +239,7 @@ pub const UI_COMMANDS: &[(&str, &str, &str, &str)] = &[
         "tool.options",
         "Tool Options…",
         "",
-        "{tool: id} what double-clicking a tool button opens: gradient → the Gradient panel (window.panel), eyedropper → Eyedropper Options (dialog `eyedropperOptions`, fields sampleSize, pickUp, apply; OK runs eyedropper.setOptions), printTiling → resets the print tiling (print.tiling.set {reset: true}), warp|twirl|pucker|bloat|scallop|crystallize|wrinkle → that tool's Tool Options (dialog `liquifyOptions`, fields tool, width, height, angle, intensity %, usePressure, detail, simplify, simplifyOn, rate, complexity, horizontal %, vertical %, affectAnchors, affectIn, affectOut, showBrush; OK runs tool.setOption {tool, values})",
+        "{tool: id} what double-clicking a tool button opens: hand → fits the artboard in the window (view.fitArtboard), zoom → 100% (view.actualSize), rotate|scale|reflect|shear → that Object › Transform dialog (dialog `rotate`, `scale`, `reflect` or `shear`; error `nothing selected` without a selection), gradient → the Gradient panel (window.panel), eyedropper → Eyedropper Options (dialog `eyedropperOptions`, fields sampleSize, pickUp, apply; OK runs eyedropper.setOptions), printTiling → resets the print tiling (print.tiling.set {reset: true}), warp|twirl|pucker|bloat|scallop|crystallize|wrinkle → that tool's Tool Options (dialog `liquifyOptions`, fields tool, width, height, angle, intensity %, usePressure, detail, simplify, simplifyOn, rate, complexity, horizontal %, vertical %, affectAnchors, affectIn, affectOut, showBrush; OK runs tool.setOption {tool, values})",
     ),
     (
         "ui.colorGuideOptions",

crates/ui-egui/src/toolbar.rs

@@ -208,9 +208,21 @@ pub fn show(app: &mut VectorcraftApp, ui: &mut Ui) {
 /// Open a tool's options (`tool.options`, a double-click on its button): the Gradient tool's are
 /// the Gradient panel, the Eyedropper's the Eyedropper Options dialog, a Liquify tool's its Tool
 /// Options dialog, the Blend tool's Blend
-/// Options; the Print Tiling tool's resets the print tiling.
+/// Options; the Print Tiling tool's resets the print tiling. As in the reference app, the Hand
+/// tool's fits the artboard in the window, the Zoom tool's shows it at 100%, and the Rotate, Scale,
+/// Reflect and Shear tools' are their Object › Transform dialogs.
 pub fn open_options(app: &mut VectorcraftApp, tool: &str) -> Result<serde_json::Value, String> {
     match tool {
+        "hand" => app.run("view.fitArtboard", json!({})),
+        "zoom" => app.run("view.actualSize", json!({})),
+        "rotate" | "scale" | "reflect" | "shear" => {
+            let id = format!("object.{tool}");
+            if let Some(c) = vectorcraft_engine::find_command(&id) {
+                (c.enabled)(&app.session)?;
+            }
+            crate::menus::invoke(app, &id, json!({}));
+            Ok(json!({ "dialog": tool }))
+        }
         "gradient" if app.ui.open_panel.as_deref() == Some("gradient") => Ok(json!({ "open": "gradient" })),
         "gradient" => app.run("window.panel", json!({ "panel": "gradient" })),
         "eyedropper" => {
@@ -486,7 +498,35 @@ pub(crate) mod tests {
         crate::dialogs::confirm(&mut app).unwrap();
         let o = app.session.prefs.eyedropper;
         assert!(o.pick_up.appearance.transparency && !o.apply.appearance.transparency && o.apply.appearance.fill.color);
-        assert!(app.run("tool.options", json!({"tool": "zoom"})).is_err());
+        assert!(app.run("tool.options", json!({"tool": "lasso"})).is_err());
+    }
+
+    #[test]
+    fn double_clicking_the_hand_zoom_and_transform_tools() {
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.run("file.new", json!({"width": 300, "height": 200})).unwrap();
+        app.canvas_rect = Some(egui::Rect::from_min_size(Pos2::ZERO, vec2(660.0, 460.0)));
+        app.run("view.setZoom", json!({"zoom": 333, "center": [10, 10]})).unwrap();
+        // Hand: the artboard fits the window. Zoom: 100%.
+        app.run("tool.options", json!({"tool": "hand"})).unwrap();
+        let v = *app.view().unwrap();
+        assert_eq!((v.center.x, v.center.y, v.zoom), (150.0, 100.0, 2.0));
+        app.run("tool.options", json!({"tool": "zoom"})).unwrap();
+        assert_eq!(app.view().unwrap().zoom, 1.0);
+        // The transform tools open their dialogs, like Object › Transform: not with nothing selected.
+        assert_eq!(app.run("tool.options", json!({"tool": "rotate"})), Err("nothing selected".into()));
+        assert!(app.ui.dialog.is_none());
+        let id = app.run("shape.rectangle", json!({"x": 10, "y": 10, "width": 40, "height": 20})).unwrap()["id"].as_u64().unwrap();
+        for tool in ["rotate", "scale", "reflect", "shear"] {
+            app.run("tool.options", json!({"tool": tool})).unwrap();
+            assert_eq!(app.ui.dialog.take().map(|d| d.kind), Some(tool.to_string()));
+        }
+        // OK in Rotate turns the selection about its centre.
+        app.run("tool.options", json!({"tool": "rotate"})).unwrap();
+        app.ui.dialog.as_mut().unwrap().fields.insert("angle".into(), json!(90));
+        crate::dialogs::confirm(&mut app).unwrap();
+        let b = app.session.active().unwrap().doc.node(vectorcraft_doc::NodeId(id)).unwrap().geometric_bounds().unwrap();
+        assert!((b.x0 - 20.0).abs() < 1e-9 && (b.y0 - 0.0).abs() < 1e-9 && (b.width() - 20.0).abs() < 1e-9, "{b:?}");
     }
 
     #[test]

docs/control-protocol.md

@@ -87,7 +87,9 @@ point (`paint.freeform.selectPoint`); its fields are `color` (hex), `opacity` an
 Tool options: double-clicking a tool button runs `tool.options {tool}`. For `gradient` it opens the Gradient panel;
 for `eyedropper` it opens Eyedropper Options, an `eyedropperOptions` dialog (fields `sampleSize` 1/3/5, `pickUp` and
 `apply`, the attribute trees of `eyedropper.setOptions`) whose `ui.dialog.confirm` runs `eyedropper.setOptions` (what
-`appearance.copyFrom` copies). Gradient tool handles snap to
+`appearance.copyFrom` copies). For `hand` it fits the artboard in the window (`view.fitArtboard`) and for `zoom` it
+shows 100% (`view.actualSize`). For `rotate`, `scale`, `reflect` and `shear` it opens the same dialog as Object ›
+Transform (dialog kind = the tool id), or fails with `nothing selected`. Gradient tool handles snap to
 anchors, edges and smart guides; Shift constrains them to 45° steps from the `constrainAngle` preference.
 
 Effect dialogs: `engine.execute {command: "effect.dialog", params: {effect, index?, item?}}` opens the `effect` dialog