Try to handle edge responses (not working)

crates/viewer/re_space_view_graph/src/canvas.rs

@@ -101,7 +101,7 @@ fn draw_arrow(painter: &Painter, tip: Pos2, direction: Vec2, color: Color32) {
     ));
 }
 
-pub fn draw_edge(ui: &mut Ui, points: [Pos2; 2], show_arrow: bool) -> Response {
+pub fn draw_edge(ui: &mut Ui, world_to_view: &mut TSTransform, points: [Pos2; 2], show_arrow: bool) -> Response {
     let fg = ui.style().visuals.text_color();
 
     let painter = ui.painter();
@@ -116,7 +116,8 @@ pub fn draw_edge(ui: &mut Ui, points: [Pos2; 2], show_arrow: bool) -> Response {
         draw_arrow(painter, points[1], direction, fg);
     }
 
-    ui.allocate_rect(Rect::from_points(&points), Sense::hover())
+    let resp = ui.allocate_rect(Rect::from_points(&points), Sense::hover());
+    register_pan_and_zoom(ui, resp, world_to_view)
 }
 
 pub fn zoom_pan_area(

crates/viewer/re_space_view_graph/src/layout/layout.rs

@@ -11,6 +11,7 @@ pub struct Layout {
 }
 
 impl Layout {
+    #[deprecated]
     pub fn bounding_rect(&self) -> Rect {
         // TODO(grtlr): We mostly use this for debugging, but we should probably
         // take all elements of the layout into account.

crates/viewer/re_space_view_graph/src/view.rs

@@ -184,7 +184,8 @@ Display a graph of nodes and edges.
 
                     for edge in graph.edges() {
                         let points = layout.get_edge(edge.from, edge.to);
-                        let resp = draw_edge(ui, points, edge.arrow);
+                        let resp = draw_edge(ui, world_to_view, points, edge.arrow);
+                        world_bounding_rect = world_bounding_rect.union(resp.rect);
                     }
                 }