def birdseye_view_draw_once(self):
        """Draw relevant objects on the screen.

        This method is prefixed "draw_once" because it is meant
        to be used just once for each time the graphical elements
        change, to avoid unnecessary work.
        """

        self.background.draw()

        ea = APP_REFS.ea

        ea.draw_selected()
        APP_REFS.gm.draw()

        ea.birdseye_graph.draw()
        ea.birdseye_caption_label.draw()
        ea.birdseye_instruction_label.draw()

        for item in self.labels_drawing_methods:
            item()
Draw relevant objects on the screen.

        This method is prefixed "draw_once" because it is meant
        to be used just once for each time the graphical elements
        change, to avoid unnecessary work.
        
nodezator/winman/states/birdseyeview.py