ui: draw debug rects (#37313)

* debug

* new

system/ui/lib/application.py

@@ -248,6 +248,10 @@ class GuiApplication:
   def set_show_fps(self, show: bool):
     self._show_fps = show
 
+  @property
+  def show_touches(self) -> bool:
+    return self._show_touches
+
   @property
   def target_fps(self):
     return self._target_fps

system/ui/widgets/__init__.py

@@ -104,6 +104,9 @@ class Widget(abc.ABC):
     self._layout()
     ret = self._render(self._rect)
 
+    if gui_app.show_touches:
+      self._draw_debug_rect()
+
     # Keep track of whether mouse down started within the widget's rectangle
     if self.enabled and self.__was_awake:
       self._process_mouse_events()
@@ -116,6 +119,10 @@ class Widget(abc.ABC):
 
     return ret
 
+  def _draw_debug_rect(self) -> None:
+    rl.draw_rectangle_lines(int(self._rect.x), int(self._rect.y),
+                            max(int(self._rect.width), 1), max(int(self._rect.height), 1), rl.RED)
+
   def _process_mouse_events(self) -> None:
     hit_rect = self._hit_rect
     touch_valid = self._touch_valid()