Fix #693: a click activates its artboard; in-place pastes go onto it

- A press with a selection tool inside an artboard makes it the active one, as
  the Artboard tool's does; before, only the navigator and the Artboards panel
  changed it.
- Paste in Place, in Front and in Back take `artboard` (the UI passes the active
  one): the objects go where they were on the artboard they were copied from,
  on that artboard. Without it, they paste where they were, as before.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/ui-egui/src/canvas.rs

@@ -864,6 +864,15 @@ pub fn dispatch(app: &mut VectorcraftApp, ev: &PointerEvent, view: vectorcraft_e
     {
         v.artboard = i;
     }
+    // A press with a selection tool inside an artboard makes it the active one (#693), as the
+    // Artboard tool's does: Paste in Place and in Front or Back then paste onto it.
+    if ev.kind == PointerKind::Down
+        && vectorcraft_tools::catalog::is_selection_tool(app.session.tool_id())
+        && let Some(i) = app.session.active().and_then(|d| d.doc.artboard_at(ev.pos))
+        && let Some(v) = app.view_mut()
+    {
+        v.artboard = i;
+    }
     apply_requests(app, r);
 }
 
@@ -2051,6 +2060,34 @@ mod tests {
         out.textures_delta.clear();
     }
 
+    /// A click with the Selection tool inside an artboard makes it the active one, and Paste in
+    /// Place then pastes onto it, where the objects were on their own artboard (#693).
+    #[test]
+    fn a_click_activates_its_artboard_and_paste_in_place_goes_onto_it() {
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        app.session.execute("file.new", &json!({"width": 200, "height": 100, "artboards": 3})).unwrap();
+        let boards: Vec<_> = app.session.active().unwrap().doc.artboards.iter().map(|a| a.rect).collect();
+        app.session.execute("shape.rectangle", &json!({"x": boards[0].x0 + 10.0, "y": boards[0].y0 + 15.0, "width": 20, "height": 20})).unwrap();
+        app.run("edit.copy", json!({})).unwrap();
+        let ctx = egui::Context::default();
+        frame(&mut app, &ctx, vec![]);
+        app.select_tool("selection");
+        let view = app.view_info();
+        let at = boards[2].center();
+        for kind in [PointerKind::Down, PointerKind::Up] {
+            dispatch(&mut app, &PointerEvent { kind, pos: at, mods: Default::default(), pressure: 1.0 }, view);
+        }
+        assert_eq!(app.view().unwrap().artboard, 2, "the clicked artboard is the active one");
+        let ids: Vec<vectorcraft_doc::NodeId> = app.run("edit.pasteInPlace", json!({})).unwrap()["ids"]
+            .as_array()
+            .unwrap()
+            .iter()
+            .map(|v| vectorcraft_doc::NodeId(v.as_u64().unwrap()))
+            .collect();
+        let b = app.session.active().unwrap().doc.bounds_of(&ids, false).unwrap();
+        assert_eq!((b.x0, b.y0), (boards[2].x0 + 10.0, boards[2].y0 + 15.0));
+    }
+
     /// Enable Touch Gestures (#585): a two-finger tap undoes and a three-finger one redoes, and the
     /// first finger's press (the pointer egui makes of it) draws nothing. Off, a tap does nothing.
     #[test]

crates/ui-egui/src/lib.rs

@@ -534,6 +534,14 @@ impl VectorcraftApp {
             {
                 p.insert("center".into(), serde_json::json!([c.x, c.y]));
             }
+            // In place, in front, in back: onto the active artboard (#693).
+            if matches!(id, "edit.pasteInPlace" | "edit.pasteInFront" | "edit.pasteInBack")
+                && params.get("artboard").is_none()
+                && let Some(i) = self.view().map(|v| v.artboard)
+                && let Some(p) = params.as_object_mut()
+            {
+                p.insert("artboard".into(), serde_json::json!(i));
+            }
             if let Some(r) = dialogs::swatch_conflict::ask(self, id, &params) {
                 return r;
             }