io/router: use areas to determine targets for synthetic clicks

Before this change, semantic clicks would be delivered according to
the center of the targeted widget, which could result in a different
widget receiving the click. Or in worst case, no widget in case the
center is not visible because of clipping.

Signed-off-by: Elias Naur <mail@eliasnaur.com>

io/router/router.go

@@ -216,10 +216,11 @@ func (q *Router) ClickFocus() {
 		Position: f32.Pt(float32(center.X), float32(center.Y)),
 		Source:   pointer.Touch,
 	}
+	area := q.key.queue.AreaFor(focus)
 	e.Type = pointer.Press
-	q.pointer.queue.Push(e, &q.handlers)
+	q.pointer.queue.Deliver(area, e, &q.handlers)
 	e.Type = pointer.Release
-	q.pointer.queue.Push(e, &q.handlers)
+	q.pointer.queue.Deliver(area, e, &q.handlers)
 }
 
 // TextInputState returns the input state from the most recent