QPainter paints only what is seen in QGraphicsView

[tsd-charlie]

I have a very large QGraphicsScene which needs to be painted on only when it is viewed by the QGraphicsView. Currently it is loading the entire scene and taking a very long time to do so. Is there a way of having QPainter only paint the QGraphicsScene if it is currently in the QGraphicsView?

[axeljaeger]

QGraphicsView should be clever enough to do that out of the box. Are you sure that it is drawn or do you just think so? You can use a profiler to see where your application actually waste time.