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

package
 project.do93.pflip.view
{

    
import
 flash.accessibility.AccessibilityProperties;
    
import
 flash.display.*;
    
import
 flash.events.*;
    
import
 flash.geom.Point;
    
import
 flash.text.*;
    
/**
     * @link [e-mail]
     * @author Kinglong
     * @version 0.1
     * @since 20090608
     * @playerversion fp9+
     * 热区提示
     */
    
public
 
class
 ToolTip 
extends
 Sprite {
        
private
 
static
 var instance:ToolTip = 
null
;
        
private
 var label:TextField;
        
private
 var area:DisplayObject;
        
public
 function ToolTip() {
            label = 
new
 TextField();
            label.autoSize = TextFieldAutoSize.LEFT;
            label.selectable = 
false
;
            label.multiline = 
false
;
            label.wordWrap = 
false
;
            label.defaultTextFormat = 
new
 TextFormat(
"宋体"
, 
12

, 
0x666666

);
            label.text = 
"提示信息"
;
            label.x = 
5

;
            label.y = 
2

;
            addChild(label);
            redraw();
            visible = 
false
;
            mouseEnabled = mouseChildren = 
false
;
        }

        
private
 function redraw() {
            var w:Number = 
10

 + label.width;
            var h:Number = 
4

 + label.height;
            
this
.graphics.clear();
            
this
.graphics.beginFill(
0x000000

, 
0.4

);
            
this
.graphics.drawRoundRect(
3

, 
3

, w, h, 
5

, 
5

);
            
this
.graphics.moveTo(
6

, 
3

 + h);
            
this
.graphics.lineTo(
12

, 
3

 + h);
            
this
.graphics.lineTo(
9

, 
8

 + h);
            
this
.graphics.lineTo(
6

, 
3

 + h);
            
this
.graphics.endFill();
            
this
.graphics.beginFill(
0xffffff

);
            
this
.graphics.drawRoundRect(
0

, 
0

, w, h, 
5

, 
5

);
            
this
.graphics.moveTo(
3

, h);
            
this
.graphics.lineTo(
9

, h);
            
this
.graphics.lineTo(
6

, 
5

 + h);
            
this
.graphics.lineTo(
3

, h);
            
this
.graphics.endFill();
        }

        
public
 
static
 function init(base:DisplayObjectContainer) {
            
if
 (instance == 
null
) {
                instance = 
new
 ToolTip();
                base.addChild(instance);
            }
        }

        
public
 
static
 function register(area:DisplayObject, message:String):
void
 {
            
if
(instance != 
null
){
                var prop:AccessibilityProperties = 
new
 AccessibilityProperties();
                prop.description = message;
                area.accessibilityProperties = prop;
                area.addEventListener(MouseEvent.MOUSE_OVER, instance.handler);
            }
        }

        
public
 
static
 function unregister(area:DisplayObject):
void
 {
            
if
 (instance != 
null
) {
                area.removeEventListener(MouseEvent.MOUSE_OVER, instance.handler);
            }
        }

        
public
 function show(area:DisplayObject):
void
 {
            
this
.area = area;
            
this
.area.addEventListener(MouseEvent.MOUSE_OUT, 
this
.handler);
            
this
.area.addEventListener(MouseEvent.MOUSE_MOVE, 
this
.handler);
            label.text = area.accessibilityProperties.description;
            redraw();
        }


        
public
 function hide():
void
 {
            
this
.area.removeEventListener(MouseEvent.MOUSE_OUT, 
this
.handler);
            
this
.area.removeEventListener(MouseEvent.MOUSE_MOVE, 
this
.handler);
            
this
.area = 
null
;
            visible = 
false
;
        }

        
public
 function move(point:Point):
void
 {
            var lp:Point = 
this
.parent.globalToLocal(point);
            
this
.x = lp.x - 
6

;
            
this
.y = lp.y - label.height - 
12

;
            
if
(!visible){
                visible = 
true
;
            }
        }

        
private
 function handler(event:MouseEvent):
void
 {
            
switch
(event.type) {
                
case
 MouseEvent.MOUSE_OUT:
                    
this
.hide();
                    
break
;
                
case
 MouseEvent.MOUSE_MOVE:
                    
this
.move(
new
 Point(event.stageX, event.stageY));
                    
break
;
                
case
 MouseEvent.MOUSE_OVER:
                    
this
.show(event.target as DisplayObject);
                    
this
.move(
new
 Point(event.stageX, event.stageY))
                    
break
;
            }
        }

    }
}

调用实例

import
 project.do93.pflip.view.ToolTip;
var base:Sprite = 
new
 Sprite();
addChild(base);
var sp:Sprite = 
new
 Sprite();
sp.mouseEnabled=sp.mouseChildren=
false
;
addChild(sp);
//初始化ToolTip;
ToolTip.init(sp);
//与显示元素关联。
ToolTip.register(xxx_mc, 
"http://www.klstudio.com"
);
ToolTip.register(btn1, 
"我是按钮1"
);
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