fix slider handle displacement in linux

        self.showed.emit()

        return super().showEvent(e)

class SliderStyle(QProxyStyle):

    def subControlRect(self, control, option, subControl, widget=None):

        rect = super(SliderStyle, self).subControlRect(

            control, option, subControl, widget)

        if subControl == QStyle.SC_SliderHandle:

            if option.orientation == Qt.Horizontal:

                # 高度1/3

                radius = int(widget.height() / 2)

                offset = int(radius / 2)

                # if option.state & QStyle.State_MouseOver:

                x = min(rect.x() - offset, widget.width() - radius)

                x = x if x >= 0 else 0

                # else:

                #     radius = offset

                #     x = min(rect.x(), widget.width() - radius)

                rect = QRect(x, int((rect.height() - radius) / 2),

                             radius, radius)

            else:

                # 宽度1/3

                radius = int(widget.width() / 2)

                offset = int(radius / 2)

                # if option.state & QStyle.State_MouseOver:

                y = min(rect.y() - offset, widget.height() - radius)

                y = y if y >= 0 else 0

                # else:

                    # radius = offset

                    # y = min(rect.y(), widget.height() - radius)

                rect = QRect(int((rect.width() - radius) / 2),

                             y, radius, radius)

            return rect

        return rect

class ColorPicker(QLabel):

    colorChanged = pyqtSignal(bool)

        return [color.red(), color.green(), color.blue(), color.alpha()]

class SliderProxyStyle(QProxyStyle):

    def subControlRect(self, cc, opt, sc, widget):

        r = super().subControlRect(cc, opt, sc, widget)

        if widget.orientation() == Qt.Horizontal:

            y = widget.height() // 4

            h = y * 2

            r = QRect(r.x(), y, r.width(), h)

        else:

            x = widget.width() // 4

            w = x * 2

            r = QRect(x, r.y(), w, r.height())

        # seems a bit dumb, otherwise the handle is buggy

        if r.height() < r.width():

            r.setHeight(r.width())

        else:

            r.setWidth(r.height())

        return r

class PaintQSlider(QSlider):

    def __init__(self, draw_content, *args, **kwargs):

        super(PaintQSlider, self).__init__(*args, **kwargs)

        # 设置代理样式,主要用于计算和解决鼠标点击区域

        self.setStyle(SliderStyle())

        # self.setStyle(SliderStyle())

        self.draw_content = draw_content

        self.pressed: bool = False

        self.setStyle(SliderProxyStyle())

    def mousePressEvent(self, event: QMouseEvent) -> None:

        if event.button() == Qt.LeftButton:

            r = rect.height() / 2

            painter.setBrush(QColor(85,85,96,255))

            painter.drawRoundedRect(rect, r, r)

            # 绘制文字

            if self.draw_content is not None:

                painter.setPen(QColor(85,85,96,255))

                font = painter.font()

                textw = fm.width(draw_content)

                if self.orientation() == Qt.Horizontal:  # 在上方绘制文字

                    x, y = rect.x() - textw/2 + rect.width()/2, rect.y() - rect.height() - 2

                    x, y = rect.x() - textw/2 + rect.width()/2, rect.y() - rect.height()

                    x = min(max(0, x), self.width()-textw)

                    # x = rect.x()

                else:  # 在左侧绘制文字

                    x, y = rect.x() - rect.width() - 2, rect.y()

                    x, y = rect.x() - rect.width(), rect.y()

                painter.drawText(

                    x, y-10, textw, rect.height()+20,

                    Qt.AlignCenter, self.draw_content.replace("value", str(self.value()))