refactor(ui): adopt iced color picker

Remove local Pin/PickList wrappers and the ACI grid.\nBlock viewport input behind the picker and load iced_aw glyphs.

src/app/update/mod.rs

@@ -2120,6 +2120,9 @@ impl OpenCADStudio {
             Message::PaneClicked(pane) => self.on_pane_clicked(pane),
             Message::PaneDragged(ev) => self.on_pane_dragged(ev),
             Message::PaneMove(idx, local) => {
+                if self.color_pick_target.is_some() {
+                    return Task::none();
+                }
                 let p = self.pane_canvas_point(idx, local);
                 // While dragging a pane, just track the cursor (no focus swap or
                 // snap) so the drop target reads cleanly.
@@ -5744,8 +5747,8 @@ impl OpenCADStudio {
                 };
                 Task::none()
             }
-            Message::OpenColorWindow(target) => {
-                self.color_pick_target = Some(target);
+            Message::OpenColorWindow(target, color) => {
+                self.color_pick_target = Some((target, color));
                 self.ds_color_open = None;
                 self.mls_color_open = None;
                 self.ts_color_open = None;
@@ -5753,8 +5756,7 @@ impl OpenCADStudio {
                 let i = self.active_tab;
                 self.tabs[i].properties.color_picker_open = false;
                 self.tabs[i].layers.color_picker_row = None;
-                // Shown as a nested modal over the active dialog (Plan B):
-                // `color_pick_target.is_some()` drives the overlay in view_main.
+                // `color_pick_target.is_some()` drives the iced_aw overlay.
                 Task::none()
             }
             Message::CloseColorPicker => {

src/app/update/style.rs

@@ -960,7 +960,7 @@ pub(super) fn on_text_style_dialog_open(&mut self) -> Task<Message> {
 
     pub(super) fn on_color_window_pick(&mut self, color: acadrust::types::Color) -> Task<Message> {
                 let s = crate::ui::color_select::color_to_aci_string(color);
-                let edit = match self.color_pick_target.take() {
+                let edit = match self.color_pick_target.take().map(|(target, _)| target) {
                     Some(crate::app::ColorPickTarget::DimStyle(f)) => Some(Message::DsEdit(f, s)),
                     Some(crate::app::ColorPickTarget::MLeader(f)) => {
                         Some(Message::MLeaderStyleEdit { field: f, value: s })
@@ -986,10 +986,14 @@ pub(super) fn on_text_style_dialog_open(&mut self) -> Task<Message> {
                     }
                     Some(crate::app::ColorPickTarget::Layer(idx)) => {
                         self.tabs[self.active_tab].layers.selected = Some(idx);
-                        match color {
-                            acadrust::types::Color::Index(i) => Some(Message::LayerColorSet(i)),
-                            _ => None,
-                        }
+                        let index = match color {
+                            acadrust::types::Color::Index(i) => i,
+                            acadrust::types::Color::Rgb { r, g, b } => {
+                                crate::ui::color_select::nearest_aci(r, g, b)
+                            }
+                            _ => 7,
+                        };
+                        Some(Message::LayerColorSet(index))
                     }
                     Some(crate::app::ColorPickTarget::LayerState(idx)) => {
                         Some(Message::LayerStateEditorLayerColor(idx, color))

src/app/update/viewport.rs

@@ -435,6 +435,10 @@ impl OpenCADStudio {
     }
 
     pub(super) fn on_cursor_moved(&mut self, p: Point) -> Task<Message> {
+        if self.color_pick_target.is_some() {
+            return Task::none();
+        }
+
         // `p` is relative to the ViewCube hit area's top-left. Map
         // it back to full-canvas coordinates so ViewportClick's
         // hit-test lines up. The hit area sits in the top-right of
@@ -498,7 +502,7 @@ impl OpenCADStudio {
         // leaks through the stack to the pane mouse_area beneath and
         // would track the crosshair over the dropdown's empty areas.
         // Drop the move here instead. (#227)
-        if self.ribbon.open_dropdown.is_some() {
+        if self.ribbon.open_dropdown.is_some() || self.color_pick_target.is_some() {
             return Task::none();
         }
         let i = self.active_tab;