def METHOD_NAME(self, ev):
    pos = ev.scenePos()
    if not self.creating and self.is_draw and self.is_press:
        self.rect_box[2] = int(pos.x())
        self.rect_box[3] = int(pos.y())
        if len(self.polygon_items) != 0:
            self.polygon_items[-1].remove()
        self.rectboxReques.emit(*self.rect_box)
    super(AnnotationScene, self).METHOD_NAME(ev)