bar_widget.py 文件源码

def drawBars(self, painter):
        size = self.size()
        width = size.width()
        height = size.height()

        bar_width = float(width - self.padding) / self.bars_number

        color = QtGui.QColor(0, 0, 0)
        painter.setPen(color)
        painter.setBrush(color)
        painter.drawRect(0, 0, width, height)
        for bar, value in enumerate(self.bars):
            bar_height = (height - self.padding) * value / self.resolution
            if not bar_height:
                bar_height = 1
            painter.setBrush(self.barColor(bar))
            painter.drawRect(
                bar * bar_width + self.padding,
                height - bar_height,
                bar_width - self.padding,
                bar_height - self.padding)