AS有趣的画线

package
{
	import flash.display.Sprite;
	[SWF(width="760", height="700", frameRate="24", backgroundColor="0xcccccc")]
	public class superMusicMP3 extends Sprite
	{
		private var line:DrawLineEvent;
		public function superMusicMP3()
		{
		   line = new DrawLineEvent(this);
		   this.addChild(line);
		}
	}
}

package
{
	import flash.display.MovieClip;
	import flash.display.Sprite;
	import flash.events.MouseEvent;
	import flash.filters.BitmapFilterQuality;
	import flash.filters.DropShadowFilter;
	
	public class DrawLineEvent extends Sprite
	{
		private var lines:Sprite;
		private var btn:MyButton;
		private var dropShadowFiler:DropShadowFilter;
		private var array:Array = [];
		private var _parent:superMusicMP3;
		public function DrawLineEvent(p:superMusicMP3)
		{
			setFilter();
			_parent = p;
			lines = new Sprite();
			lines.filters =array;
			this.addChild(lines);
			btn = new MyButton();
			btn.x = 100;
			btn.y = 20;
			this.addChild(btn);
			lineEvent();
		}
		private function setFilter():void{//Add Filter
			dropShadowFiler = new DropShadowFilter();
			dropShadowFiler.quality = BitmapFilterQuality.HIGH ;
			dropShadowFiler.blurX = dropShadowFiler.blurY = 10;
			dropShadowFiler.color = 16711935;
			dropShadowFiler.distance = 0;
			array.push(dropShadowFiler);
		}
		private function lineEvent():void{
			_parent.stage.addEventListener(MouseEvent.MOUSE_DOWN,lineBegin);
			_parent.stage.addEventListener(MouseEvent.MOUSE_UP,lineEnd);
			btn.addEventListener(MouseEvent.CLICK,lineClean);
		}
		private function lineBegin(e:MouseEvent):void{
			lines.graphics.lineStyle(10,0x0099ff,1);// lineStyle(10 线径,0x0099ff蓝色,1) 16711935粉色
			lines.graphics.moveTo(mouseX,mouseY);
			_parent.stage.addEventListener(MouseEvent.MOUSE_MOVE,lineDraw);
		}
		private function lineEnd(e:MouseEvent):void{
			parent.stage.removeEventListener(MouseEvent.MOUSE_MOVE,lineDraw);
		}
		private function lineDraw(e:MouseEvent):void{
			lines.graphics.lineTo(mouseX,mouseY);
		}
		private function lineClean(e:MouseEvent):void{
		    lines.graphics.clear();
		}
	}
}