Re: CGImage failing to animate
Re: CGImage failing to animate
- Subject: Re: CGImage failing to animate
- From: Marcel Weiher <email@hidden>
- Date: Sat, 27 Jul 2002 19:16:02 +0200
On Saturday, July 27, 2002, at 06:39 Uhr, Colin Klipsch wrote:
The animation /does/ work correctly when I don't use CoreGraphics, but
instead use an NSBitmapImageRep, along with the appropriate lines of
supporting code. The problem therefore must be in my use or misuse of
CoreGraphics. (And yes, I need the CoreGraphics way I'm afraid; I
can't revert to the older technique.)
- (void)drawRect:(NSRect)dirtyRect
{
CGRect rect = {0, 0, kWidth, kHeight};
CGContextRef context = [[NSGraphicsContext
graphicsContextWithWindow:[self window]] graphicsPort];
This is wrong. You don't want to create graphics contexts, you want to
use the current one.
CGContextref context = [[NSGraphicsContext currentContext]
graphicsPort];
Don't know if that will solve it, but it should help.
I am also not sure if just setting the needsDisplay: from a timer is
enough. Display updating is done after an event has been processed. I
am not sure a timer-firing counts as an event.
Marcel
--
Marcel Weiher Metaobject Software Technologies
email@hidden www.metaobject.com
Metaprogramming for the Graphic Arts. HOM, IDEAs, MetaAd etc.
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