Kinglong's Blog-[AS3]提示信息类-ToolTip

[AS3]提示信息类-ToolTip

ToolTip类

/**
* @author Kinglong
* @version 0.1
*/

package project.happy9.browse {
	
	import flash.display.*;	
	import flash.events.*;
	import flash.text.*;
	import flash.utils.*;
	import flash.filters.*;
	
	public class ToolTip extends Sprite {
		
		private static var _instance:ToolTip;
		
		private var _label:TextField;		
		public function ToolTip(base:Sprite) {
			_label = new TextField();
			_label.autoSize = TextFieldAutoSize.LEFT;
			_label.textColor = 0x333333;
			_label.text = " ";
			_label.selectable = false;
			_label.x = 3;
			_label.y = 2;
			addChild(_label);			
			filters = [getBitmapFilter()];
			base.addChild(this);			
			_instance = this;
			_hide();
		}
		
		public static function show(lbl:String):void {
			if (_instance == null) {
				return;
			}
			_instance._show(lbl);
		}
		
		public function _show(lbl:String):void {
			visible = true;
			_label.text = lbl;
			updateShape();
		}
		
		public static function hide():void {
			if (_instance == null) {
				return;
			}
			_instance._hide();
		}	
		
		public function _hide():void {
			visible = false;
		}
		
		public static function move(x:Number, y:Number):void {
			if (_instance == null) {
				return;
			}
			_instance._move(x, y);			
		}
		
		public function _move(x:Number, y:Number):void {
			this.x = (x+this.width>stage.stageWidth)?stage.stageWidth-this.width:x;
			this.y = y - this.height;
		}
		
		private function changeHandler(event:Event):void {
			updateShape();
		}
		
		private function updateShape():void {
			var w:Number = _label.textWidth + 8;			
			var h:Number = 23;
			graphics.clear();
			graphics.beginFill(0x6F0A13);
			graphics.drawRoundRect(0, 0, w, h, 7, 7);
			graphics.endFill();
			graphics.beginFill(0xFFFFE1);
			graphics.drawRoundRect(1, 1, w-2, h-2, 7, 7);
			graphics.endFill();			
		}
		
		private function getBitmapFilter():BitmapFilter {
            var color:Number = 0x000000;
            var alpha:Number = 0.3;
            var blurX:Number = 5;
            var blurY:Number = 5;
            var strength:Number = 2;
            var inner:Boolean = false;
            var knockout:Boolean = false;
            var quality:Number = BitmapFilterQuality.HIGH;

return new GlowFilter(color,
                                  alpha,
                                  blurX,
                                  blurY,
                                  strength,
                                  quality,
                                  inner,
                                  knockout);
        }

}
	
}

调用实例

/**
* @author Kinglong
* @version 0.1
*/

package project.test {

import flash.display.*;
    import flash.events.*;	
	
	import fl.controls.*;
	
	import project.happy9.browse.ToolTip;

public class TestToolTip extends Sprite{
		
		private var _names:Array = ["我是按钮A","我是按钮B","我是按钮C","我是按钮D"];
		public function TestToolTip() {
			for (var i:uint = 0; i < _names.length; i++ ) {
				var button:Button = new Button();
				button.label = "button_" + i;
				button.move(2,30*i+10);
				button.addEventListener(MouseEvent.MOUSE_OVER, overHandler);
				button.addEventListener(MouseEvent.MOUSE_OUT, outHandler);
				button.addEventListener(MouseEvent.MOUSE_MOVE, moveHandler);	
				addChild(button);
			}
			new ToolTip(this);
		}

private function overHandler(event:MouseEvent):void{
			var arr:Array = event.target.label.split("_");
			ToolTip.show(_names[int(arr[1])]);
			ToolTip.move(event.stageX,event.stageY);
		}
		
		private function outHandler(event:MouseEvent):void {
			ToolTip.hide();
		}
		
		private function moveHandler(event:MouseEvent):void {
			ToolTip.move(event.stageX,event.stageY);
		}
	}
	
}

演示效果

应"求救"的要求，我把相关文件打包，以提供下载
http://www.klstudio.com/demo/test/tooltip.rar

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Comments:

四个角的判断可以叫进去。可以完美些。

我喜欢这样的接口
ToolTip.addTip(button1,"我是按钮A");
ToolTip.removeTip(button1);

to tian,Chuyue：
我提供的方法并不是最好的，最实用的，所以大家都可以根据自己的需求自己修改了！

能给个源文件下吗？我这么调试出错啊，谢谢
TypeError: Error #1006: move 不是函数。
at TestToolTip$iinit()

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