PyQT QSlider(滑动条)控件鼠标点击定位

class ClickJumpSlider(QSlider):
    """
    重新 QSlider 点击滚动条信号方法
    """
    def mousePressEvent(self, event):
        # 获取上面的拉动块位置
        option = QStyleOptionSlider()
        self.initStyleOption(option)
        rect = self.style().subControlRect(
            QStyle.CC_Slider, option, QStyle.SC_SliderHandle, self)
        if rect.contains(event.pos()):
            # 如果鼠标点击的位置在滑块上则交给Qt自行处理
            super(MyQSlider, self).mousePressEvent(event)
            return
        if self.orientation() == Qt.Horizontal:
            # 横向，要考虑invertedAppearance是否反向显示的问题
            self.setValue(self.style().sliderValueFromPosition(
                self.minimum(), self.maximum(),
                event.x() if not self.invertedAppearance() else (self.width(
                ) - event.x()), self.width()))
        else:
            # 纵向
            self.setValue(self.style().sliderValueFromPosition(
                self.minimum(), self.maximum(),
                (self.height() - event.y()) if not self.invertedAppearance(
                ) else event.y(), self.height()))