flex 放大缩小源码

 <?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the Zoom effect. -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Style />
    <mx:Script>
        <![CDATA[       
            import flash.events.MouseEvent;
           // import mx.skins.halo.ComboBoxArrowSkin;
            //import mx.skins.halo.PanelSkin;
           
           
    private function button_clickZoomIn(evt:MouseEvent):void{
        zoomAll.zoomWidthfrom=zoomAll.zoomWidthTo;
        zoomAll.zoomHeightfrom=zoomAll.zoomHeightTo;
        zoomAll.zoomHeightTo+=1;
        zoomAll.zoomWidthTo+=1;
        zoomAll.play([box],evt.buttonDown);
    }    
    private function button_clickZoomOut(evt:MouseEvent):void{
        if(zoomAll.zoomHeightTo > 1 && zoomAll.zoomWidthTo >1)
        {
        zoomAll.zoomWidthfrom=zoomAll.zoomWidthTo;
        zoomAll.zoomHeightfrom=zoomAll.zoomHeightTo;
        zoomAll.zoomHeightTo-=1;
        zoomAll.zoomWidthTo-=1;
        zoomAll.play([box],evt.buttonDown);
        }        
    }    
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