这次做公司一个项目，发现原来的那个ToolTip类使用起来还是不方便，故我又重新写一个更方便更灵活的ToolTip类，现在把相关源代码也公布出来。
新ToolTip类
package project.do93.pflip.view<br/>{<br/> <br/> import flash.accessibility.AccessibilityProperties;<br/> import flash.display.*;<br/> import flash.events.*;<br/> import flash.geom.Point;<br/> import flash.text.*;<br/> /**<br/> * @link kinglong@gmail.com<br/> * @author Kinglong<br/> * @version 0.1<br/> * @since 20090608<br/> * @playerversion fp9+<br/> * 热区提示<br/> */ <br/> public class ToolTip extends Sprite {<br/> private static var instance:ToolTip = null;<br/> private var label:TextField; <br/> private var area:DisplayObject;<br/> public function ToolTip() {<br/> label = new TextField();<br/> label.autoSize = TextFieldAutoSize.LEFT;<br/> label.selectable = false;<br/> label.multiline = false;<br/> label.wordWrap = false;<br/> label.defaultTextFormat = new TextFormat("宋体", 12, 0x666666);<br/> label.text = "提示信息";<br/> label.x = 5;<br/> label.y = 2;<br/> addChild(label);<br/> redraw();<br/> visible = false;<br/> mouseEnabled = mouseChildren = false;<br/> }<br/> <br/> private function redraw() {<br/> var w:Number = 10 + label.width;<br/> var h:Number = 4 + label.height; <br/> this.graphics.clear();<br/> this.graphics.beginFill(0x000000, 0.4);<br/> this.graphics.drawRoundRect(3, 3, w, h, 5, 5); <br/> this.graphics.moveTo(6, 3 + h);<br/> this.graphics.lineTo(12, 3 + h);<br/> this.graphics.lineTo(9, 8 + h);<br/> this.graphics.lineTo(6, 3 + h);<br/> this.graphics.endFill();<br/> this.graphics.beginFill(0xffffff);<br/> this.graphics.drawRoundRect(0, 0, w, h, 5, 5);<br/> this.graphics.moveTo(3, h);<br/> this.graphics.lineTo(9, h);<br/> this.graphics.lineTo(6, 5 + h);<br/> this.graphics.lineTo(3, h);<br/> this.graphics.endFill();<br/> }<br/> <br/> public static function init(base:DisplayObjectContainer) {<br/> if (instance == null) {<br/> instance = new ToolTip();<br/> base.addChild(instance); <br/> }<br/> }<br/> <br/> public static function register(area:DisplayObject, message:String):void {<br/> if(instance != null){<br/> var prop:AccessibilityProperties = new AccessibilityProperties();<br/> prop.description = message;<br/> area.accessibilityProperties = prop;<br/> area.addEventListener(MouseEvent.MOUSE_OVER, instance.handler);<br/> }<br/> }<br/> <br/> public static function unregister(area:DisplayObject):void {<br/> if (instance != null) {<br/> area.removeEventListener(MouseEvent.MOUSE_OVER, instance.handler);<br/> }<br/> }<br/> <br/> public function show(area:DisplayObject):void {<br/> this.area = area;<br/> this.area.addEventListener(MouseEvent.MOUSE_OUT, this.handler);<br/> this.area.addEventListener(MouseEvent.MOUSE_MOVE, this.handler);<br/> label.text = area.accessibilityProperties.description;<br/> redraw(); <br/> }<br/><br/> <br/> public function hide():void {<br/> this.area.removeEventListener(MouseEvent.MOUSE_OUT, this.handler);<br/> this.area.removeEventListener(MouseEvent.MOUSE_MOVE, this.handler);<br/> this.area = null;<br/> visible = false;<br/> }<br/> <br/> public function move(point:Point):void { <br/> var lp:Point = this.parent.globalToLocal(point);<br/> this.x = lp.x - 6; <br/> this.y = lp.y - label.height - 12;<br/> if(!visible){<br/> visible = true;<br/> }<br/> }<br/> <br/> private function handler(event:MouseEvent):void {<br/> switch(event.type) {<br/> case MouseEvent.MOUSE_OUT:<br/> this.hide();<br/> break;<br/> case MouseEvent.MOUSE_MOVE:<br/> this.move(new Point(event.stageX, event.stageY)); <br/> break;<br/> case MouseEvent.MOUSE_OVER:<br/> this.show(event.target as DisplayObject);<br/> this.move(new Point(event.stageX, event.stageY))<br/> break;<br/> }<br/> }<br/> <br/> }<br/>}
调用实例
import project.do93.pflip.view.ToolTip;<br/>var base:Sprite = new Sprite();<br/>addChild(base);<br/>var sp:Sprite = new Sprite();<br/>sp.mouseEnabled=sp.mouseChildren=false;<br/>addChild(sp);<br/>//初始化ToolTip;<br/>ToolTip.init(sp);<br/>//与显示元素关联。<br/>ToolTip.register(xxx_mc, "http://www.klstudio.com");<br/>ToolTip.register(btn1, "我是按钮1");<br/>ToolTip.register(btn2, "我是按钮2");
演示效果

相关文件打包下载：http://www.klstudio.com/upload/tooltip.rar