def paintEvent(self, event):
ScalableLabel.paintEvent(self, event)
if self._select_rect is not None:
painter = QPainter(self)
pen = QPen(QColor(255, 255, 255))
pen.setDashPattern([5, 5])
painter.setPen(pen)
painter.drawRect(self._select_rect)
pen.setColor(QColor(0, 0, 0))
pen.setDashOffset(5.)
painter.setPen(pen)
painter.drawRect(self._select_rect)
painter.end()
