mouse_painting.py 文件源码

def _callBack(self, event, x, y, flags, param):
        # ????????????????
        if event == cv2.EVENT_LBUTTONDOWN:
            self._doEvent(self._press_func, x, y)
            self._is_drag = True

        # ????????????
        elif event == cv2.EVENT_MOUSEMOVE:
            if self._is_drag:
                self._doEvent(self._drag_func, x, y)

        # ????????????????
        elif event == cv2.EVENT_LBUTTONUP:
            self._doEvent(self._release_func, x, y)
            self._is_drag = False


# ?????????