QGraphicsItem clip to scene Rect
I'm trying to clip my items inside the scene rect.
I have customs items whith the paint method redifined and the following line inside it:
where the rect is my scene rect. If no rotation is applied to the item or if the rotation is 90, 180 or 270 degrees it works well but when I rotate the item by 45° for example (using qtransform) the rect return by mapRectFromScene is not what I expect.
I have some difficulties understanding transformations and matrix, any help would be appreciated!
I've solved it like this (in custom item paint method):
QRectF r = QRectF(0,0,50000,50000).translated(-scenePos()); QPainterPath p; p.addRect(r); p = transform().inverted().map(p); painter->setClipPath(p);