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// 保存 512 个声音波形的快照
private var bytes:ByteArray = new ByteArray();
// SoundBar 的个数
private var barNum:uint = 64;
// 保存所有 SoundBar 的引用
private var soundBars:Array = new Array();
//定时器
private var timer : Timer;
//Application的initialize初试化事件
private function init(event:Event):void
{
var loader:URLLoader = new URLLoader();
loader.load(new URLRequest(xmlPath));
loader.addEventListener(Event.COMPLETE,Xml_Complete);
timer = new Timer(100);
timer.addEventListener(TimerEvent.TIMER,timerTick);
var barWidth:Number = boxSoundBar.width*1.00/barNum;
// 初始化Canvas为音频条，放入舞台并加入数组
for (var i:uint = 0; i < barNum; i++) {
var soundBar:Canvas = new Canvas();
soundBar.width = barWidth;
soundBar.height = boxSoundBar.height;
soundBar.x = i * barWidth;
soundBar.y = 0;
var g:Graphics = soundBar.graphics;
g.lineStyle(1,0x6688AA,1);
g.beginGradientFill(GradientType.RADIAL,[0x33cc00,0x456628],[1,1],[0,255],null,SpreadMethod.REFLECT,InterpolationMethod.RGB,0);
g.drawRect(0,0,soundBar.width,soundBar.height);
g.endFill();
boxSoundBar.addChild(soundBar);
soundBars.push(soundBar);
}
// 隐藏一些内建的鼠标右键菜单项
this.contextMenu.hideBuiltInItems();
var contextMenuItem : ContextMenuItem = new ContextMenuItem("Powered By: Jonllen");
contextMenuItem.enabled = false;
contextMenu.customItems.push(contextMenuItem);
this.contextMenu.customItems.push(contextMenuItem);
//更改鼠标图标
CursorManager.setCursor(cursorHand);
}
//读取XML文件完成事件
private function Xml_Complete(event:Event):void
{
xml = new XML(event.target.data);
if(xml.item.length()>=1)
{
listSong.dataProvider= xml.item.name;
listSong.selectedIndex = 0;
//手动触发List的Change事件
listSong.dispatchEvent(new mx.events.ListEvent(Event.CHANGE, true, false));
}
}
//List选择歌曲改变事件
private function Xml_Change(event:Event):void
{
currIndex = event.target.selectedIndex;
timer.stop();
//停止声音文件的加载
if( song!=null )
{
//移除之前加载PROGRESS事件对songProgress进度条的控制
song.removeEventListener(ProgressEvent.PROGRESS,songProgress_Change);
if( song.isBuffering )
song.close();
}
song = new Sound();
var url : String = xml.item[currIndex].url;
var source:URLRequest = new URLRequest(url);
song.load(source);
song.addEventListener(ProgressEvent.PROGRESS, songProgress_Change);
song.addEventListener(IOErrorEvent.IO_ERROR, songProgress_Error);
position = 0;
songStart();
}
//歌曲播放完成
private function songProgress_Complete(e:Event):void {
if(currIndex == xml.item.length()-1) {
currIndex = 0;
}else {
currIndex++;
}
listSong.selectedIndex = currIndex;
listSong.dispatchEvent(new mx.events.ListEvent(Event.CHANGE, true, false));
}
//加载歌曲失败
private function songProgress_Error(e:IOErrorEvent):void {
Alert.show("文件不存在！","系统提示");
}
//开始播放歌曲
private function songStart():void {
if ( channel != null ){
channel.stop();
}
lblName.text = xml.item[currIndex].name;
channel = song.play(position,int.MAX_VALUE);
var length :Number = song.length*song.bytesTotal/song.bytesLoaded;
var date : Date = new Date();
date.time = length;
var dt : DateFormatter = new DateFormatter();
dt.formatString="NN:SS";
var totalTime : String = dt.format(date);
date.time = channel.position;
lblTime.text = dt.format(date) + " | " + totalTime;
lblStatus.text = "播放";
var soundcontrol : SoundTransform = channel.soundTransform;
soundcontrol.volume = volumeSlider.value;
channel.soundTransform= soundcontrol;
timer.start();
boxSoundBar.visible = true;
}
//停止歌曲播放
private function songStop():void {
timer.stop();
position = 0;
boxSoundBar.visible = false;
lblTime.text = "00:00 |"+lblTime.text.split("|")[1];
lblStatus.text = "停止";
songSlider.value = songSlider.minimum;
songProgress.setProgress(songProgress.minimum,songProgress.maximum);
if ( channel != null )
{
channel.stop();
}
}
//暂停歌曲播放
private function songPause():void {
if ( channel != null ){
timer.stop();
position = channel.position;
channel.stop();
lblStatus.text = "暂停";
}
}
//加载歌曲进度条显示
private function songProgress_Change(e:ProgressEvent):void {
var percent:int = Math.round(e.bytesLoaded * 100 / e.bytesTotal);
songProgress.setProgress(e.bytesLoaded,e.bytesTotal);
}
//定时器方法
private function timerTick( e:TimerEvent):void {
if( channel!=null) {
var length :Number = song.length*song.bytesTotal/song.bytesLoaded;
var date : Date = new Date();
date.time = length;
var dt : DateFormatter = new DateFormatter();
dt.formatString="NN:SS";
var totalTime : String = dt.format(date);
date.time = channel.position;
lblTime.text = dt.format(date) + " | " + totalTime;
songSlider.value=100*channel.position/length;
if( songSlider.value>=songSlider.maximum){
timer.stop();
songProgress_Complete(null);
return;
}
SoundMixer.computeSpectrum(bytes, false, 0);
for (var i:uint = 0; i < barNum; i++) {
soundBars[i].scaleY = bytes.readFloat();
}
}
}
//歌曲进度调整事件
internal function songSlider_Change(e:SliderEvent):void{
timer.stop();
if ( channel != null ){
var length :Number = song.length*song.bytesTotal/song.bytesLoaded;
position = e.value*length/100;
songStart();
}
}
//声音大小调整事件
internal function changeVolume(evt:SliderEvent):void{
if ( channel != null ){
var soundcontrol : SoundTransform = channel.soundTransform;
soundcontrol.volume = evt.value;
channel.soundTransform= soundcontrol;
}
}
//设置歌曲播放时间和总时间
private function setTimeStatus():void {
var length :Number = song.length*song.bytesTotal/song.bytesLoaded;
var date : Date = new Date();
date.time = length;
var dt : DateFormatter = new DateFormatter();
dt.formatString="NN:SS";
var totalTime : String = dt.format(date);
date.time = channel.position;
lblTime.text = dt.format(date) + " | " + totalTime;
}
]]>
</mx:Script>
<mx:HBox verticalGap="0" verticalAlign="middle" horizontalAlign="center">
<mx:Canvas borderColor="#CCCCCC" borderStyle="solid">
<mx:Label x="5" fontSize="18" y="10" text=""/>
<mx:HBox horizontalGap="0" verticalAlign="middle"
x="5" y="39" visible="false"></mx:HBox>
<mx:ProgressBar label=""
mode="manual" textAlign="left"
labelPlacement="center" fontSize="3" x="10" y="97"
minimum="0" maximum="100" barColor="yellow"
trackColors="[white, haloSilver]"/>
<mx:HSlider styleName="song" value="0"
showTrackHighlight="true" x="5" y="85" thumbDrag="songSlider_Change(event)"
minimum="0" maximum="100"
liveDragging="false" snapInterval="1" toolTip="拖动调整播放进度">
</mx:HSlider>
<mx:Label x="243" y="41" text=""/>
<mx:Label x="205" y="66" text="00:00 | 5:23"/>
<mx:Button x="10" y="124" label="Play"/>
<mx:Button x="74" y="124" label="Pause"/>
<mx:Button x="152" y="124" label="Stop"/>
<mx:HSlider styleName="volume" change="changeVolume(event)"
showTrackHighlight="true" value="0.5" x="222" y="133"
minimum="0" maximum="10" liveDragging="true"
snapInterval="0.1" toolTip="音量调节" />
<mx:Label x="308" fontSize="18" y="10" text="歌曲列表"/>
<mx:List alpha="0.25" x="308" y="43"
change="Xml_Change(event)" toolTip="点击选择歌曲"></mx:List>
</mx:Canvas>
</mx:HBox>
</mx:Application>
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