counterlabel.py 文件源码

def rescale(self):

        fm = QFontMetricsF(self._font, self)
        maxRect = fm.boundingRect(QRectF(self.rect()), Qt.AlignCenter,
                str(self._maximum))
        xscale = float(self.width())/maxRect.width()
        yscale = float(self.height())/maxRect.height()
        self._scale = min(xscale, yscale)