conductor.py 文件源码

def __init__(self, parent, positionInSeconds):
            self.__class__.instances.append(self)
            m, s = divmod(positionInSeconds, 60)
            text = "{}:{} min".format(str(int(m)).zfill(2), str(int(s)).zfill(2))
            super().__init__(text)

            marker = QtWidgets.QGraphicsLineItem(0, 0, 0, -10) #vertical marker to connect to the conductor line
            marker.setParentItem(self)