Efficient Scaling and Rotating of QGraphicsView

[forrestfsu]

An additional note. Once the user has scaled the image to a different ratio then the original, even using the scroll bars for the graphicsView lag moving the content of the graphicsView.

[forrestfsu]

I just fixed the problem (still a few minor bugs to go through). Instead of returning an entire Pixmap, I needed only return the area of the Pixmap that I needed to display using the QPixmap's copy function. After I have all the code in place I will paste it for review.

Thanks Wysota for all your help on this issue.