prototype.py 文件源码

def paintEvent(self, paint_event):
        # pylint: disable=unused-argument
        painter = QPainter(self)
        painter.setRenderHint(painter.Antialiasing)
        painter.setPen(QColor(Qt.black))
        for upper, lower in self.lines:
            x1, y1 = self._lower_bound(upper)
            x2, y2 = self._upper_bound(lower)
            painter.drawLine(x1, y1, x2, y2)