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making gif animation run once then go back to default image

 
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I have an image tag on a page, and through java script I change the image to different gifs depending on triggers from the user (onFocus, onmouseover, etc). So here are some of the events:





So say the user triggers the first event, which changes the image to test.gif. What if I only want this gif to run it's animation one time, then go back to the previous image that it had replaced? Is there a way to control this?

Thanks
 
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There is no way to know anything about the animation within a GIF.

If you know the duration of the animation, you might be able to guess when it starts and ends, but it won't be deterministic.
 
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Easiest solution would be to alter the gif image's last frame to be the default image.

Eric
 
Matt Kohanek
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Well I made a gif with real pics using this site: http://gickr.com/

and it made the gif just fine, but it loops through the animation over and over. So even if I were to make the last piece of the gif the original pic, the loop would start again and keep cycling through the animation. Is there a way to have it cycle only once and then stop?

Or is there some way to add in a count for the javascript to pause, during which time the gif will cycle through, then at the end of that countdown, the image can be replaced by the original image? SOmething like this in pseudo:

 
Matt Kohanek
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I guess the basic question would be, can you make the gif loop through it's frames only one time and stop rather than loop repeatedly.
 
Bear Bibeault
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Use a GIF creation tool such as ImageReady to control the animation.
 
Matt Kohanek
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I've heard of that, I will look into it, thanks
 
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