Visible Rect of a QGraphicsView

Adam Crowe

Hello,

Can someone recommend a method of finding the rect of the currently visible are of a QGraphicsView. Say the scene is larger than the view, how can I know what the visible area of the view is?

I'd like to use this to implement auto-scrolling while moving/dragging an item and also for a highlighted rectangle over a small overview view.

I've been Googling this quite a lot and found some suggestions. The main one is:

QPointF viewTopLeft = view->mapToScene(view->viewport()->x(), view->viewport()->y());
QPointF viewBottomRight = view->mapToScene(view->viewport()->width(), view->viewport()->height());
QRectF visibleRect = QRectF(viewTopLeft, viewBottomRight);

But this seems to return the same result every time regardless of the view. The result is the most top left corner.

I'm sure there is a straightforward solution that I'm missing.

Thank you in advance!

Adam

SGaist

Hi,

Did you check this stack overflow thread ?