Flex做控件的截图

可以修改为倒影效果

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" xmlns:local="*">
	<mx:Canvas id="cvs" x="45" y="31" width="383" height="225">
		<mx:Image id="imgRed" width="345" height="10" source="imgs/img.gif" x="19" y="140"/>
	</mx:Canvas>
	
	<mx:Script>
		<![CDATA[
	public var bitmap:Bitmap = new Bitmap(new BitmapData( 1, 1, true, 0 ));

	private function drawImage():void{
		var bitmapData:BitmapData = new BitmapData(cvs.width, cvs.height, true, 0);
        var matrix:Matrix = new Matrix();
        var rectangle:Rectangle = new Rectangle(0,0,cvs.width,cvs.height*1);
        var delta:Point = matrix.transformPoint(new Point(0,cvs.height));
        matrix.tx = delta.x*-1;
        matrix.ty = (delta.y-cvs.height)*-1;
        bitmapData.draw(cvs, matrix, null, null, rectangle, true);
        bitmap.bitmapData.dispose();
        bitmap.bitmapData = bitmapData;
        img.addChild(bitmap);
  	}  		
	private function btnClick():void{
		drawImage();				
	}
		]]>
	</mx:Script>
	<mx:Button x="485" y="148" label="Draw" click=" btnClick()"/>
	<mx:Image id="img" x="45" y="264" width="383" height="220"/>
</mx:Application>