Getting the visible rect of an UIScrollView's content

Question

How can I go about finding out the rect (CGRect) of the content of a displayed view that is actually visible on screen.

myScrollView.bounds

Answer 1

Shorter version:

CGRect visibleRect = CGRectApplyAffineTransform(scrollView.bounds, CGAffineTransformMakeScale(1.0 / scrollView.zoomScale, 1.0 / scrollView.zoomScale));

I'm not sure if this is defined behavior, but almost all UIView subclasses have the origin of their bounds set to (0,0). UIScrollViews, however, have the origin set to contentOffset.