CodecsGifOptions Class

CodecsOptionsExamples.prototype.CodecsGifOptionsExample = function ( )
{
   Tools.SetLicense ( ) ;
   with (Leadtools) {
      with (Leadtools.Codecs) {
         var codecs = new RasterCodecs();
         var srcFileName = "Assets\\eye.gif";
         var imageInfo;
         var srcImage;
         // Get all Information about the Gif file that you want to load.
         return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) {
            return codecs.getInformationAsync(LeadStreamFactory.create(loadFile), true, 1)
         })
         .then(function (imgInfo) {
            imageInfo = imgInfo;

            // set the animation loop value. 
            if (imageInfo.gif.hasAnimationLoop) {
               codecs.options.gif.load.animationLoop = imageInfo.gif.animationLoop;
               if (imageInfo.gif.animationLoop > 10)
                  codecs.options.gif.save.animationLoop = 10;
            }

            // if this image that you want to load uses the Animation loop then use it in the save options.
            codecs.options.gif.save.useAnimationLoop = imageInfo.gif.hasAnimationLoop;

            // if this image that you want to load uses the Animation Background then use it in the save options.
            if (imageInfo.gif.hasAnimationBackground)
               codecs.options.gif.save.animationBackground = imageInfo.gif.animationBackground;

            // if this image that you want to load uses the Animation Palette then use it in the save options.
            if (imageInfo.gif.hasAnimationPalette)
               codecs.options.gif.save.setAnimationPalette(imageInfo.gif.getAnimationPalette());

            codecs.options.gif.save.useAnimationPalette = imageInfo.gif.hasAnimationPalette;

            // if this image that you want to load uses the Intrlaced option, then use it otherwise don't use it.
            codecs.options.gif.save.interlaced = imageInfo.gif.isInterlaced;

            codecs.options.gif.save.animationWidth = imageInfo.gif.animationWidth;
            codecs.options.gif.save.animationHeight = imageInfo.gif.animationHeight;

            return Tools.AppInstallFolder().getFileAsync(srcFileName)
         })
         .then(function (loadFile) {
            return codecs.loadAsync(LeadStreamFactory.create(loadFile))
         })
         .then(function (srcImg) {
            srcImage = srcImg;
            var destFileName = "gif1.gif";
            return Tools.AppLocalFolder().createFileAsync(destFileName)
         })
         .then(function (saveFile) {
            codecs.saveAsync(srcImage, LeadStreamFactory.create(saveFile), RasterImageFormat.gif, srcImage.bitsPerPixel, 1, srcImage.pageCount, 1, CodecsSavePageMode.overwrite);

            //change some save options and save the image in a new file.
            codecs.options.gif.save.useAnimationLoop = true;
            codecs.options.gif.save.animationLoop = 1;
            codecs.options.gif.save.animationWidth = imageInfo.gif.animationWidth + 100;
            codecs.options.gif.save.animationHeight = imageInfo.gif.animationHeight + 100;

            //Saving the image after the Gif setting.
            destFileName = "gif2.gif";
            return Tools.AppLocalFolder().createFileAsync(destFileName)
         })
         .then(function (saveFile) {
            return codecs.saveAsync(srcImage, LeadStreamFactory.create(saveFile), RasterImageFormat.gif, srcImage.bitsPerPixel, 1, srcImage.pageCount, 1, CodecsSavePageMode.overwrite)
         })
         .then(function (saveFile) {

            // Clean up
            srcImage.close();
            codecs.close();
         });
      }
   }
}