package

 {

     import flash.display.Loader;

     import flash.display.SimpleButton;

     import flash.display.Sprite;

     import flash.events.Event;

     import flash.events.MouseEvent;

     import flash.geom.ColorTransform;

     import flash.net.URLRequest;

     /**

      * ...

      * @author FrostYen

      */

     public class ColorTransformExample extends Sprite

     {

         private var _ldr:Loader = new Loader();

         private var _sp:Sprite = new Sprite();

         private var _btn:Sprite = new Sprite();

         private var _colorTransform:ColorTransform = new ColorTransform(1, 1, 1, 1, 255, 255, 255, 0);

         private var _frame:int=15;//相当于影片剪辑动画的帧数

         public function ColorTransformExample() {

             _ldr.load(new URLRequest("image/farewell-to-fall.jpg"));

             _sp.transform.colorTransform = _colorTransform;

             _btn.graphics.beginFill(0x666666);

             _btn.graphics.drawRect(0, 0, 100, 50);

             _btn.graphics.endFill();

             _btn.buttonMode = true;

             _btn.x = 700;

             _btn.y = 100;

             this.addChild(_btn);

             this.addChild(_sp);

             _sp.addChild(_ldr);

             stage.frameRate = 36;//帧频

             _ldr.contentLoaderInfo.addEventListener(Event.COMPLETE, onImageLoaded);

             _btn.addEventListener(MouseEvent.CLICK, onClick);

         }

         private function onClick(e:MouseEvent):void

         {

             addEventListener(Event.ENTER_FRAME, onEnter);

         }

         private function onEnter(e:Event):void

         {

             if (_colorTransform.redOffset > 0) {

                 _colorTransform.redOffset -= 255/_frame;

                 _colorTransform.greenOffset -= 255/_frame;

                 _colorTransform.blueOffset -= 255/_frame;

                 _sp.transform.colorTransform = _colorTransform;

             }else {

                 _colorTransform = new ColorTransform(1, 1, 1, 1, 255, 255, 255, 0);

                 removeEventListener(Event.ENTER_FRAME, onEnter);

             }

         }

         private function onImageLoaded(e:Event):void

         {

         }

     }

 }