Posted on 2012-10-20 14:40
谁用我名字啦？ 阅读(181)
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flex学习之路
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">
<fx:Script>
<![CDATA[
import mx.controls.*;
import mx.core.IVisualElement;
import mx.core.UIComponent;
import mx.graphics.ImageSnapshot;
[Embed(source="E:/flex/45.png")]
[Bindable]
private var bookImage:Class;
public var uiComponent:Object;
public var targetImage:Object;
public var Ax:int = 0;
public var Ay:int = 0;
public function mouseDown(event:MouseEvent):void{
//在原地生成图片副本，然后将移动图片。
this.uiComponent = event.currentTarget;
//生成图片
var bd:BitmapData = ImageSnapshot.captureBitmapData( UIComponent( uiComponent ) );
targetImage = new Image();
targetImage.source = new Bitmap(bd);
targetImage.x = uiComponent.x;
targetImage.y = uiComponent.y;
Ax = event.localX;
Ay = event.localY;
this.addEventListener(MouseEvent.MOUSE_MOVE, mouseMove);
this.addEventListener(MouseEvent.MOUSE_UP, mouseUp);
this.addElement(targetImage as IVisualElement);// as DisplayObject
}
public function mouseMove(event:MouseEvent):void{
targetImage.x = event.stageX-Ax;
targetImage.y = event.stageY-Ay;
}
public function mouseUp(event:MouseEvent):void{
this.removeEventListener(MouseEvent.MOUSE_MOVE, mouseMove);
this.removeEventListener(MouseEvent.MOUSE_UP, mouseUp);
//当鼠标移动到预定位置，将图片删除，并且移动源控件。
uiComponent.x = event.stageX-Ax;
uiComponent.y = event.stageY-Ay;
this.removeElement(targetImage as IVisualElement);
targetImage = null;
}
]]>
</fx:Script>
<mx:Image x="331" y="127" source="{bookImage}" mouseDown="mouseDown(event)"/>
</s:Application>