ToolTip类的升级版

些ToolTip类确实比之前的方便多了,收藏

///////////////////////////------------------本文来自http://www.klstudio.com/post/198.html  

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

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1. package  project.do93.pflip.view  
2. {  
3.       
4.      import  flash.accessibility.AccessibilityProperties;  
5.      import  flash.display.*;  
6.      import  flash.events.*;  
7.      import  flash.geom.Point;  
8.      import  flash.text.*;  
9.      /**  
10.      * @link kinglong@gmail.com  
11.      * @author Kinglong  
12.      * @version 0.1  
13.      * @since 20090608  
14.      * @playerversion fp9+  
15.      * 热区提示  
16.      */    
17.      public   class  ToolTip  extends  Sprite {  
18.          private   static  var instance:ToolTip =  null ;  
19.          private  var label:TextField;          
20.          private  var area:DisplayObject;  
21.          public  function ToolTip() {  
22.             label =  new  TextField();  
23.             label.autoSize = TextFieldAutoSize.LEFT;  
24.             label.selectable =  false ;  
25.             label.multiline =  false ;  
26.             label.wordWrap =  false ;  
27.             label.defaultTextFormat =  new  TextFormat( "宋体" ,  12 ,  0x666666 );  
28.             label.text =  "提示信息" ;  
29.             label.x =  5 ;  
30.             label.y =  2 ;  
31.             addChild(label);  
32.             redraw();  
33.             visible =  false ;  
34.             mouseEnabled = mouseChildren =  false ;  
35.         }  
36.           
37.          private  function redraw() {  
38.             var w:Number =  10  + label.width;  
39.             var h:Number =  4  + label.height;              
40.              this .graphics.clear();  
41.              this .graphics.beginFill( 0x000000 ,  0.4 );  
42.              this .graphics.drawRoundRect( 3 ,  3 , w, h,  5 ,  5 );                
43.              this .graphics.moveTo( 6 ,  3  + h);  
44.              this .graphics.lineTo( 12 ,  3  + h);  
45.              this .graphics.lineTo( 9 ,  8  + h);  
46.              this .graphics.lineTo( 6 ,  3  + h);  
47.              this .graphics.endFill();  
48.              this .graphics.beginFill( 0xffffff );  
49.              this .graphics.drawRoundRect( 0 ,  0 , w, h,  5 ,  5 );  
50.              this .graphics.moveTo( 3 , h);  
51.              this .graphics.lineTo( 9 , h);  
52.              this .graphics.lineTo( 6 ,  5  + h);  
53.              this .graphics.lineTo( 3 , h);  
54.              this .graphics.endFill();  
55.         }  
56.           
57.          public   static  function init(base:DisplayObjectContainer) {  
58.              if  (instance ==  null ) {  
59.                 instance =  new  ToolTip();  
60.                 base.addChild(instance);                  
61.             }  
62.         }  
63.           
64.          public   static  function register(area:DisplayObject, message:String): void  {  
65.              if (instance !=  null ){  
66.                 var prop:AccessibilityProperties =  new  AccessibilityProperties();  
67.                 prop.description = message;  
68.                 area.accessibilityProperties = prop;  
69.                 area.addEventListener(MouseEvent.MOUSE_OVER, instance.handler);  
70.             }  
71.         }  
72.           
73.          public   static  function unregister(area:DisplayObject): void  {  
74.              if  (instance !=  null ) {  
75.                 area.removeEventListener(MouseEvent.MOUSE_OVER, instance.handler);  
76.             }  
77.         }  
78.           
79.          public  function show(area:DisplayObject): void  {  
80.              this .area = area;  
81.              this .area.addEventListener(MouseEvent.MOUSE_OUT,  this .handler);  
82.              this .area.addEventListener(MouseEvent.MOUSE_MOVE,  this .handler);  
83.             label.text = area.accessibilityProperties.description;  
84.             redraw();             
85.         }  
86.   
87.           
88.          public  function hide(): void  {  
89.              this .area.removeEventListener(MouseEvent.MOUSE_OUT,  this .handler);  
90.              this .area.removeEventListener(MouseEvent.MOUSE_MOVE,  this .handler);  
91.              this .area =  null ;  
92.             visible =  false ;  
93.         }  
94.           
95.          public  function move(point:Point): void  {               
96.             var lp:Point =  this .parent.globalToLocal(point);  
97.              this .x = lp.x -  6 ;            
98.              this .y = lp.y - label.height -  12 ;  
99.              if (!visible){  
100.                 visible =  true ;  
101.             }  
102.         }  
103.           
104.          private  function handler(event:MouseEvent): void  {  
105.              switch (event.type) {  
106.                  case  MouseEvent.MOUSE_OUT:  
107.                      this .hide();  
108.                      break ;  
109.                  case  MouseEvent.MOUSE_MOVE:  
110.                      this .move( new  Point(event.stageX, event.stageY));                     
111.                      break ;  
112.                  case  MouseEvent.MOUSE_OVER:  
113.                      this .show(event.target as DisplayObject);  
114.                      this .move( new  Point(event.stageX, event.stageY))  
115.                      break ;  
116.             }  
117.         }  
118.           
119.     }  
120. }  

调用实例

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1. import  project.do93.pflip.view.ToolTip;  
2. var base:Sprite =  new  Sprite();  
3. addChild(base);  
4. var sp:Sprite =  new  Sprite();  
5. sp.mouseEnabled=sp.mouseChildren= false ;  
6. addChild(sp);  
7. //初始化ToolTip;   
8. ToolTip.init(sp);  
9. //与显示元素关联。   
10. ToolTip.register(xxx_mc,  "http://www.klstudio.com" );  
11. ToolTip.register(btn1,  "我是按钮1" );  
12. ToolTip.register(btn2,  "我是按钮2" );  

演示效果
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="550" height="400" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0"> </object>
相关文件打包下载：http://www.klstudio.com/upload/tooltip.rar