fix(ui): add Brushes button at top of Brush Settings control list (#4265) (#4354)

* fix(ui): add Brushes button at top of Brush Settings control list (#4265)

* test(ui): verify Brushes button at top of Brush Settings opens Brushes panel (#4265)

crates/ui-egui/src/brush_panel.rs

@@ -248,6 +248,21 @@ fn section_list(app: &mut PhotocraftApp, ui: &mut egui::Ui, b: &mut BrushSetting
     ui.vertical(|ui| {
         ui.set_width(150.0);
         ui.spacing_mut().item_spacing.y = 1.0;
+        let (br_rect, br_resp) = ui.allocate_exact_size(vec2(150.0, 23.0), Sense::click());
+        br_resp.widget_info(|| egui::WidgetInfo::labeled(egui::WidgetType::Button, true, tl!("Brushes")));
+        if br_resp.hovered() {
+            ui.painter().rect_filled(br_rect, t.radius_sm, t.hover);
+        }
+        let icon_rect = egui::Rect::from_center_size(egui::pos2(br_rect.left() + 12.0, br_rect.center().y), vec2(13.0, 13.0));
+        icons::paint(ui, icon_rect, "brush", 12.0, if br_resp.hovered() { t.text } else { t.icon });
+        let galley = ui.painter().layout_no_wrap(tl!("Brushes").to_string(), theme::semibold(12.0), if br_resp.hovered() { t.text } else { t.text_dim });
+        ui.painter().galley(egui::pos2(br_rect.left() + 26.0, br_rect.center().y - galley.size().y / 2.0), galley, t.text);
+        if br_resp.clicked() {
+            let _ = crate::menus::invoke(app, ui.ctx(), "window.panel.brushes", json!({}));
+        }
+        ui.add_space(3.0);
+        widgets::hairline(ui);
+        ui.add_space(3.0);
         for (i, (name, has_box)) in SECTIONS.iter().enumerate() {
             let toggle_only = checkbox_only(i);
             // Group the switches with whitespace, not separators between individual rows.

crates/ui-egui/src/brush_panel_tests.rs

@@ -1120,3 +1120,15 @@ fn hand_tool_offers_scale_buttons_and_requests_the_right_view() {
     assert!(h.state().ui.views[0].fill_pending);
     assert!(!h.state().ui.views[0].fit_pending);
 }
+
+#[test]
+fn brushes_button_at_top_of_brush_settings_opens_brushes_panel() {
+    use egui_kittest::kittest::Queryable;
+
+    let mut h = harness(0, 0);
+    assert_eq!(h.state().ui.brush_tab, 0);
+    h.get_by_label("Brushes").click();
+    h.run_steps(3);
+    assert!(h.state().ui.panels.brush_settings);
+    assert_eq!(h.state().ui.brush_tab, 1);
+}