+ # pylint: disable=protected-access
+ for layer in self._layers:
+ if isinstance(layer, Group):
+ layer._get_refresh_areas(areas)
+ elif isinstance(layer, TileGrid):
+ if not layer._get_rendered_hidden():
+ layer._get_refresh_areas(areas)
+
+ def _set_hidden(self, hidden: bool) -> None:
+ if self._hidden_group == hidden:
+ return
+ self._hidden_group = hidden
+ if self._hidden_by_parent:
+ return