QSlider

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(JumpSlider, 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()))