How to get visible scene rect for QGraphicsView

Question

Imagine QGraphicsView is set with the scene that is twice as wider as view's width. sceneRect() will return the whole scene rect. I'd like to get the rect representing the half of the scene with respect to scrollbars' positions.

Answer 1

Get the viewport rectangle with the graphicsView->viewport()->rect() and map it to the scene space with the graphicsView->mapToScene().

Answer 2

I am not totally sure which rectangle you exactly need (this depends from what you want to do) but something like graphicsView->viewport()->contentsRect() or graphicsView->viewport()->geometry() should work.