timeline_widget.py 文件源码

def itemChange(self, change, value):
        if change == QtGui.QGraphicsItem.ItemSelectedHasChanged:
            self.setPen(
                QtGui.QColor(0, 255, 0, 255) if self.isSelected()
                else QtGui.QColor(0, 0, 0, 255)
            )
            self.setZValue(
                self.zValue() + 1 if self.isSelected() else self.zValue() - 1
            )

        return super(_BaseItem, self).itemChange(change, value)