Re: Text Animation
Re: Text Animation
- Subject: Re: Text Animation
- From: Scott Anguish <email@hidden>
- Date: Sat, 1 Sep 2007 18:48:27 -0400
On Sep 1, 2007, at 6:38 AM, Uli Kusterer wrote:
There are only a few places where you're ever allowed to draw in
Cocoa: Either between a lockFocus/unlockFocus on an NSImage/
NSImageRep, or from inside the drawRect method of an NSView subclass
(that's pure Cocoa, i.e. AppKit -- if you use OpenGL directly or
CoreImage or so, there may be other places). You're not supposed to
lock focus on a view manually and draw just at any old time.
that's probably a bit strong.
there are cases where locking focus, drawing, and then unlocking focus
outside of these cases are useful (in the AppKit domain) . I believe
at least one common case is creating selection rectangles/indicators.
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