[PyQt] dragging a QGraphicsSvgItem

[Wolfgang Rohdewald]

While dragging it, I want to see the whole image of the item move.
What works is something like this:

(code goes into class Tile(QGraphicsSvgItem), def mousePressEvent)

            ...
            pmapSize = self.tileset.tileSize.toSize()
            if self.pixmap is None or self.pixmap.size() != pmapSize:
                self.pixmap = QPixmap(pmapSize)
                self.pixmap.fill(Qt.transparent)
                painter = QPainter(self.pixmap)
                QGraphicsSvgItem.paint(self, painter, QStyleOptionGraphicsItem())
                for item in self.childItems():
                    QGraphicsSvgItem.paint(item, painter, QStyleOptionGraphicsItem())
            drag.setPixmap(self.pixmap)
            drag.setHotSpot(event.pos().toPoint())


but I do not want to render a SVG that is already rendered 

Is there any way I can avoid rendering this item twice? Did I overlook
a QGraphicsSvgItem method that would return its rendered pixmap?



-- 
Wolfgang