def get_gutter_renderer(self): if self._gutter_renderer == None: renderer = GtkSource.GutterRendererPixbuf() renderer.set_size(16) renderer.connect("query-data", self._on_breakpoint_gutter_query_data) renderer.connect("query_activatable", self._on_breakpoint_gutter_query_activatable) self._gutter_renderer = renderer return self._gutter_renderer