> On 24 Mar 2015, at 17:01, Till Oliver Knoll <till.oliver.kn...@gmail.com> > wrote: > > But since the QGraphicsPixmapItem is doing the drawing for me, I probably > really need to get informed about resolution changes, and replace the pixmaps > in the QGraphicsViewItem myself as needed (unless I am overseeing some other, > simpler solution here). Or maybe if I would overwrite the > QGraphicsPixmapItem::paint() method and use something like the above code... > but that would almost defy the reason why I would use a QGraphicsPixmapItem > in the first place... (I could derive from QGraphicsItem then directly > instead).
This may be an accurate observation on the usefulness of QGraphicsPixmapItem when targeting multiple pixel densities. To me QGraphicsPixmapItem::paint() looks like the right place to generate a new pixmap on demand - you should be able to check if painter->device()->devicePixelRatio() has changed since the previous draw call. Morten _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
