package project.test {
	
	import flash.display.*;
	import flash.events.*;
	import flash.geom.Matrix;
	import flash.geom.Point;
	import flash.geom.Rectangle;
	import flash.text.*;
	import flash.filters.*;
	import flash.net.URLRequest;
	
	import flash.media.Sound;
    import flash.media.SoundChannel;
    import flash.utils.Timer;
	
	//导入系统组件;
	import fl.controls.Button;
	
	//导入LRCParser类;
	import com.klstudio.media.LRCParser;
	
	public class Test4 extends Sprite{
		//定义解析器;
		private var parser:LRCParser;
		//定义声音对象;
		private var snd:Sound;
		//定义声音播放频道;
        private var channel:SoundChannel;
		//歌词序号;
        private var id:uint = 0;
		//定时器;
		private var timer:Timer;
		//显示平台;
		private var base:Sprite;
		//歌词显示;
		private var bmp:Bitmap;
		//播放按钮;
		private var button:Button;
		
		private var preWidth:uint;
		private var preHeight:uint;
		private var copyright:TextField;
		public function Test4(){
			preWidth = 400;
			preHeight = 100;
			
			stage.scaleMode = StageScaleMode.NO_SCALE;
			stage.showDefaultContextMenu = false;
			
			//显示平台;
			base = new Sprite();
			addChild(base);
			
			//初始化解析器;
			parser = new LRCParser();
			parser.addEventListener(Event.COMPLETE,completeHandler);
			parser.addEventListener(ErrorEvent.ERROR,errorHandler);
			parser.load("/demo/test/爱情转移.lrc");
			
			//初始化定时器;
			timer = new Timer(50);
			timer.addEventListener(TimerEvent.TIMER,timerHandler);
			
			//初始化声音对象;
			snd = new Sound();
            snd.load(new URLRequest("/demo/test/爱情转移.mp3"));
            
            //copyright;
			copyright = new TextField();
            copyright.autoSize = TextFieldAutoSize.LEFT;
			copyright.selectable = false;
            copyright.defaultTextFormat = new TextFormat("Verdana",9,0xFFFFFF,true,null,null,"http://www.klstudio.com","_blank");
			copyright.text = "POWERED BY KINGLONG";
			copyright.x = preWidth - copyright.width - 5;
			copyright.y = preHeight - copyright.height - 5;
			var filter:BitmapFilter = getBitmapFilter();
            copyright.filters = [filter];
			copyright.alpha = 0.8;
            addChild(copyright);
			
			//显示平台;
			base.graphics.lineStyle(1,0x666666);
			base.graphics.beginFill(0xF4F4F4);
			base.graphics.drawRect(0,0,preWidth,preHeight - copyright.height - 10);
			
			base.graphics.lineStyle(1,0x999999);
			base.graphics.moveTo(0,25);
			base.graphics.lineTo(preWidth,25);
			base.graphics.moveTo(150,1);
			base.graphics.lineTo(150,25);
			base.graphics.moveTo(250,1);
			base.graphics.lineTo(250,25);
			
            base.addChild(getTextField("title","歌名:",new Rectangle(3,3,147)));
			base.addChild(getTextField("artist","歌手:",new Rectangle(153,3,97)));
			base.addChild(getTextField("special","专辑:",new Rectangle(253,3,147)));
			
			bmp = new Bitmap(new BitmapData(preWidth-4,preHeight-54,false,0));
			bmp.x = 2;
			bmp.y = 27;
			addChild(bmp);
			
			button = new Button();
			button.x = (preWidth - button.width)/2;
			button.y = 40;			
			button.label = "PLAY MUSIC";
			button.enabled = false;
			button.addEventListener(MouseEvent.CLICK, clickHandler);
			addChild(button);			
		}
		
		//按钮点击事件;
		private function clickHandler(event:MouseEvent):void{
			//声音播放频道
			if(channel != null){
				channel.removeEventListener(Event.SOUND_COMPLETE, soundCompleteHandler);
				channel = null;
			}
            channel = snd.play();
            channel.addEventListener(Event.SOUND_COMPLETE, soundCompleteHandler);
			timer.start();
			button.visible = false;
		}
		
		
		//获得文本框;
		private function getTextField(name:String,lbl:String,rect:Rectangle,clr:uint=0x666666):TextField{
			var txf:TextField = new TextField();			
			txf.width = rect.width;
			txf.selectable = false;
			txf.defaultTextFormat = new TextFormat("Courier New",12,clr);
			txf.name = name;
			txf.text = lbl;
			txf.x = rect.x;
			txf.y = rect.y;
			return txf;
		}
		
		//定时器间隔事件;
		private function timerHandler(event:TimerEvent):void{
			//获取歌词列表;
			var arr:Array = parser.getList();
			if(id<arr.length){
				//时间数;
				//要显示的歌词时间数是播放器时间数+歌词偏移量;
				var point:int = int(channel.position + parser.getOffset());
				if(point <= arr[id+1].time){
					drawLyric(arr[id].lyric);
				}else{
					id ++;
				}
			}
		}
		
		//光晕滤镜;
		private function getBitmapFilter():BitmapFilter {
            var color:Number = 0x000000;
            var alpha:Number = 0.8;
            var blurX:Number = 2;
            var blurY:Number = 2;
            var strength:Number = 6;
            var inner:Boolean = false;
            var knockout:Boolean = false;
            var quality:Number = BitmapFilterQuality.HIGH;
            return new GlowFilter(color,
                                  alpha,
                                  blurX,
                                  blurY,
                                  strength,
                                  quality,
                                  inner,
                                  knockout);
        }
		
		//lrc文件加载完成事件;
		private function completeHandler(event:Event):void{
			trace("completeHandler>>"+event);
			var title:TextField = base.getChildByName("title") as TextField;
			var artist:TextField = base.getChildByName("artist") as TextField;
			var special:TextField = base.getChildByName("special") as TextField;
			title.text = "歌名:" + parser.getTitle();
			artist.text = "歌手:" + parser.getArtist();
			special.text = "专辑:" + parser.getSpecial();
			button.enabled = true;
		}
		
		//显示歌词;
		private function drawLyric(lyric:String):void{
			var txf:TextField = getTextField("lyric",lyric,new Rectangle(0,0,380),0xFFCC00);
			bmp.bitmapData.applyFilter(bmp.bitmapData,new Rectangle(0,0,bmp.width,bmp.height),new Point(0,0),new ColorMatrixFilter([1,0,0,0,-5,0,1,0,0,-5,0,0,1,0,-5,0,0,0,1,0]));			
			bmp.bitmapData.applyFilter(bmp.bitmapData,new Rectangle(0,0,bmp.width,bmp.height),new Point(0,0),new BlurFilter(12,12));
			var matrix:Matrix = new Matrix();
			matrix.translate(10,13);
			bmp.bitmapData.draw(txf,matrix,null,BlendMode.SCREEN);
		}
		
		//lrc文件加载失败事件;
		private function errorHandler(event:ErrorEvent):void{
			trace("errorHandler>>"+event);
		}
		//歌曲播放完成事件;
		private function soundCompleteHandler(event:Event):void {
            trace("soundCompleteHandler: " + event);
			if(timer.running){
				timer.stop();
			}
			bmp.bitmapData.fillRect(new Rectangle(0,0,bmp.width,bmp.height),0); 
			id = 0;
			button.visible = true;
        }
	}
	
}