class Meter(renpy.Displayable):
    def __init__(self, value, **kwargs):
        super(Meter, self).__init__(**kwargs)
        self.value = value
        self.moves = 0

    def render(self, width, height, st, at):
        renpy.redraw(self, 0.1)
        rv = renpy.Render(width, 20)
        rv.fill("#fff", (0, 0, self.value, 20))
        canvas = rv.canvas()
        canvas.circle("#f00", (5, 5), 4)
        rv.blit(renpy.render("pic.png", width, height, st, at), (3, 4))
        return rv

    def event(self, ev, x, y, st):
        if ev.type == pygame.MOUSEMOTION:
            self.moves += 1
        raise renpy.IgnoreEvent()


meter = Meter(60)