I have a CGRect "A" contained in another CGRect "B"
I'm not sure on how UIEdgeInsets are calculated - and I keep getting the arithmatic wrong -  what I need is the edge insets (= "EI") such that "A" will be equal to "B" after performing:
UIEdgeInsetsRect("A","EI") == "B"
Is there a macro such that
"EI" = UIEdgeInsetsFromRects("B","A") ?
Thanks