Getting the visible rect of an UIScrollView's content
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
The code above works when there's no zooming, but as soon as you allow zooming, it breaks at zoom scales other than 1.
To clarify, I want a CGRect that contains the visible area of the scroll view's content, relative to the content. (ie. if it's a zoom scale 2, the rect's size will be half of the scroll view's size, if it's at zoom scale 0.5, it'll be double.)
Answer
Or you could simply do
CGRect visibleRect = [scrollView convertRect:scrollView.bounds toView:zoomedSubview];
Swift
let visibleRect = scrollView.convert(scrollView.bounds, to: zoomedSubview)