Re: Animated GIF
Re: Animated GIF
- Subject: Re: Animated GIF
- From: Jens Bauer <email@hidden>
- Date: Mon, 23 Feb 2004 00:20:52 +0100
Hi Sam,
On Sunday, Feb 22, 2004, at 23:43 Europe/Copenhagen, Sam McCandlish
wrote:
Is there a way to make an animated gif in Cocoa? If possible can you
make it using an NSImage?
Searching this archive (recent), I found this by Troy Stephens:
---8<-----8<-----8<-----
Does anyone know if it is possible to 'run' an animated gif without
the need for an NSImageView to contain it ? Or in the least be able to
test the gif image data to see if it contains animations or a single
frame ?
Yes. Once you've got the .gif loaded as an NSImage, search the NSImage
for an NSBitmapImageRep, then refer to the animated GIF properties
listed in the NSBitmapImageRep docs:
http://developer.apple.com/documentation/Cocoa/Reference/
ApplicationKit/ObjC_classic/Classes/NSBitmapImageRep.html#//apple_ref/
occ/cl/NSBitmapImageRep
NSImageFrameCount tells you how many frames there are in the animation.
NSImageLoop count tells you whether the animation should be looped,
and, if so, how many times. Set NSImageCurrentFrame to the index of a
desired frame to cause it to be the frame you get when you next draw
the image. Add an NSTimer to the mix and you're ready to animate! :-)
(NSImageCurrentFrameDuration tells you how long the current frame
should be displayed.)
--->8----->8----->8-----
Love,
Jens
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| References: | |
| | >Animated GIF (From: Sam McCandlish <email@hidden>) |