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. { 
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.         } 
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.         } 
57. public static function init(base:DisplayObjectContainer) { 
58. if (instance == null) { 
59.                 instance = new ToolTip(); 
60.                 base.addChild(instance);                 
61.             } 
62.         } 
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.         } 
73. public static function unregister(area:DisplayObject):void { 
74. if (instance != null) { 
75.                 area.removeEventListener(MouseEvent.MOUSE_OVER, instance.handler); 
76.             } 
77.         } 
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.         } 
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.         } 
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.         } 
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.         } 
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
相关文件打包下载：http://www.klstudio.com/upload/tooltip.rar