GraphicsView: how to avoid animated background when animating sceneRect

[ecanela]

i cant complete visualize you problem. maybe some screenshot or even better the minimal source code who reproduce your problem.

meanwile you maybe try some one of this options
- draw background in the view not the scene. set QGrapicsView::setBackgroundBrush(),
- reimplement QGraphicsView::drawBackground() this provide more control over how painting the background

[d_stranz]

You might also try one of the caching options on the QGraphicsItem that holds the images. This was vital in my app to allow smooth rubber banding over a complex background graphic. Using caching on the graphic meant that it would only be physically redrawn when the content or size changed; all the rest of the time it was simply blitted from the cache, with no noticeable flicker at all.