On Tue, 12 Jan 2010 14:18:05 -0600, Michael Gardner <gardne...@gmail.com> said: >I'm trying to create a "snapshot" UIImage from a UITextView that's inside a larger, hidden UIView. renderInContext: works fine for visible UIView layers, but I can't get consistent results for hidden views. > >I read somewhere (can't recall the source, but it wasn't authoritative) that this is expected behavior, and that -renderInContext: is only guaranteed to work for visible UIViews' layers. Is this true? If so, how else can I replicate *exactly* what my UITextView would look like when visible?
In my JACTVocab app I have a similar problem: I need to make a "snapshot" of a situation in my window that doesn't exist yet. In other words, my window is in situation A, but I need a snapshot of situation B. I will eventually show the user situation B, but I need the snapshot first. So what I do is: I take a snapshot of situation A, and cover the window with a borderless window containing that snapshot. This hides what I am about to do in the real window. Now I change the situation in the window to situation B. The user cannot see this happening because snapshot of situation A is covering the window. Now I take the snapshot of situation B (this works perfectly well even though the second window is covering it). The hand is quicker than the eye, and the user never notices (I hope). Also, I use cacheDisplayInRect, not renderInContext. But it may be that there are reasons why you don't have that option... Hope this helps some - m. -- matt neuburg, phd = m...@tidbits.com, <http://www.tidbits.com/matt/> A fool + a tool + an autorelease pool = cool! AppleScript: the Definitive Guide - Second Edition! http://www.tidbits.com/matt/default.html#applescriptthings _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
