自定义类(BroadCastMarquee.as)： package marquee
{
import flash.events.MouseEvent;
import flash.events.TimerEvent;
import flash.geom.Rectangle;
import flash.text.TextField;
import flash.text.TextFieldAutoSize;
import flash.text.TextFormat;
import flash.utils.Timer; import mx.core.UIComponent; /**
*
* 信息滚动显示(跑马灯控件)
* @version
* <pre>
* 修改版本: 1.0.0
* 修改日期：2009-1-15
* 修改人 : zhang
* 修改说明：形成初始版本
*</pre>
*
* * 功能：
* 1.直接将某TextField转换为跑马灯文本 changeTextFieldToMarqueeText
* 2.动态设定显示宽度 width
* 3.动态设定一次移动间隔时间 delay
* 4.动态设定一次移动间隔距离 step
* 5.设定默认文本显示样式 defaultTextFormat
* 6.动态设定文本显示样式 setTextFormat
* */
public class BroadCastMarquee extends UIComponent
{ [Bindable]
private var broadcastText:String="broadcast message"; private var m_timer:Timer; private var m_DefaultText_X:Number=0; //每次移动距离
private var m_step:Number=10; //滚动范围
private var m_rect:Rectangle; //移动时间间隔
private var t_delay:Number=100; //广播信息滚动宽度
private var m_Width:Number; //滚动方向属性
[Inspectable(defaultValue="left",enumeration="right,left", category="direction", type="String")]
public var ScrollDirection:String="left"; //显示内容样式
[Bindable]
private var m_TextFormat:TextFormat=new TextFormat("Verdana","10","#0b333c"); /**广播信息内容显示控件*/
private var m_BroadCastText:TextField; // private var m_BroadcastLabel:Label; public function BroadCastMarquee()
{
super(); InitBroadcast(); addEventListener(MouseEvent.MOUSE_OVER,rollOverHandler);
addEventListener(MouseEvent.ROLL_OUT, rollOutHandler); } /**初始化*/
private function InitBroadcast():void
{
/**广播信息显示控件初始化*/
m_BroadCastText=new TextField();
m_BroadCastText.autoSize=TextFieldAutoSize.LEFT;
m_BroadCastText.multiline=false;
m_BroadCastText.selectable=false;
m_BroadCastText.x=m_BroadCastText.y=m_DefaultText_X
m_BroadCastText.wordWrap=false;
m_BroadCastText.text=broadcastText;
//m_BroadCastText.defaultTextFormat=m_TextFormat;
addChild(m_BroadCastText); this.m_Width=this.width;
m_rect=new Rectangle(0,0,this.width,this.m_BroadCastText.textHeight);
this.m_BroadCastText.scrollRect=m_rect; m_timer = new Timer(t_delay); ScrollBroadText(); } /**
* 如果有新的广播消息,或者长度改变进行滚动显示
* */
private function ScrollBroadText():void
{
if(this.m_timer!=null)
{
//停止移动
StopMoveBroadcast(); if(this.broadcastText!="")
{
m_timer.addEventListener(TimerEvent.TIMER, timerhandler);
m_timer.start();
}
// Math.abs( }
} /**控制滚动信息*/
private function timerhandler(evt:TimerEvent):void
{
if(this.m_BroadCastText.textWidth>0)
{ if(ScrollDirection.toLowerCase()=="left")
{ if(m_rect.x<=this.m_BroadCastText.textWidth)
{
// this.m_BroadCastText.x+=(-this.m_step);
m_rect.x+=this.m_step; }else
{
//this.m_BroadCastText.x=m_DefaultText_X+this.m_BroadCastText.textWidth;
m_rect.x=-(m_DefaultText_X+this.m_Width);
} }else
{ if(Math.abs(m_rect.x)<=this.m_BroadCastText.textWidth)
{
m_rect.x-=this.m_step; }else
{
this.m_rect.x=m_DefaultText_X; } } m_BroadCastText.scrollRect = m_rect; }else
{
//停止移动
StopMoveBroadcast();
} } /**停止移动*/
private function StopMoveBroadcast():void
{
if(m_timer!=null)
{
this.m_timer.stop();
if(m_timer.hasEventListener(TimerEvent.TIMER))
m_timer.removeEventListener(TimerEvent.TIMER, timerhandler); m_BroadCastText.x=this.m_DefaultText_X;
m_rect.height = m_BroadCastText.height;
// this.height=m_rect.height;
m_BroadCastText.scrollRect = m_rect;
}
} /**************************广播信息处理事件*********************************/ /**鼠标经过处理事件*/
protected function rollOverHandler(event:MouseEvent):void
{
if(this.m_timer!=null&&this.broadcastText!="")
{
this.m_timer.stop();
}
} /**鼠标离开处理事件*/
protected function rollOutHandler(event:MouseEvent):void
{
if(this.m_timer!=null&&this.broadcastText!="")
{
this.m_timer.start();
}
} /**************************广播信息属性*************************************/ /**移动时间间隔*/
public function set BroadCastDeplay(value:Number):void
{
this.m_timer.delay=value;
} /**设置广播信息内容*/
public function set BroadCastText(value:String):void
{
this.m_BroadCastText.text=value;
ScrollBroadText();
} /**取得广播信息内容*/
public function get BroadCastText():String
{
return this.broadcastText;
} /**广播信息宽度宽度*/
public override function get width():Number
{
return this.m_Width;
} public override function set width(width:Number):void
{
this.m_Width=width;
this.m_rect.width=this.m_Width;
this.m_BroadCastText.scrollRect=this.m_rect;
ScrollBroadText();
// this.m_BroadCastText.setTextFormat
} /**设置滚动方向('left' or 'right')*/
public function set Direction(value:String):void
{
this.ScrollDirection=value;
ScrollBroadText();
} /**设置字体格式化样式*/
public function set defaultTextFormat(format:TextFormat):void
{
this.m_BroadCastText.defaultTextFormat=format;
this.setTextFormat(format);
//
} public function setTextFormat(format:TextFormat, beginIndex:int = -1, endIndex:int = -1):void
{
m_BroadCastText.setTextFormat(format, beginIndex, endIndex);
ScrollBroadText();
} /**字体大小*/
public function set fontSize(value:Object):void
{
this.m_TextFormat=new TextFormat(this.m_TextFormat.font,value,this.m_TextFormat.color);
this.m_BroadCastText.setTextFormat(this.m_TextFormat,-1,-1); } /**字体名称*/
public function set fontFamily(value:String):void
{
this.m_TextFormat=new TextFormat(value,this.m_TextFormat.size,this.m_TextFormat.color);
this.m_BroadCastText.setTextFormat(this.m_TextFormat,-1,-1);
} /**字体颜色*/
public function set color(value:Object):void
{
this.m_TextFormat=new TextFormat(this.m_TextFormat.font,this.m_TextFormat.size,value);
this.m_BroadCastText.setTextFormat(this.m_TextFormat,-1,-1);
} /**是否是粗体*/
public function set fontWeight(value:Object):void
{
this.m_TextFormat=new TextFormat(this.m_TextFormat.font,this.m_TextFormat.size,this.m_TextFormat.color,value)
this.m_BroadCastText.setTextFormat(this.m_TextFormat,-1,-1);
}
}
}
TestBroadCastMarquee.mxml :
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()" xmlns:marquee="marquee.*">
<marquee:BroadCastMarquee width="500" height="25" BroadCastDeplay="800" BroadCastText="公告：火爆商品等你拿!" ScrollDirection="left">
</marquee:BroadCastMarquee>
</mx:Application>
--------------------------------------------------------------------------------------------------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="middle"
backgroundColor="white"> <mx:Script>
<![CDATA[
private function fade_click():void {
fader.stop();
fader.play([box]);
} private function wipe_click():void {
wiper.stop();
wiper.play([box]);
}
]]>
</mx:Script> <mx:Sequence id="fader">
<mx:Fade alphaFrom="0.0" alphaTo="1.0" />
<mx:Pause duration="{slider.value}" />
<mx:Fade alphaFrom="1.0" alphaTo="0.0" />
</mx:Sequence> <mx:Sequence id="wiper">
<mx:SetPropertyAction name="alpha" value="1.0" />
<mx:WipeRight showTarget="true" />
<mx:Pause duration="{slider.value}" />
<mx:WipeRight showTarget="false" />
<mx:SetPropertyAction name="alpha" value="0.0" />
</mx:Sequence> <mx:ApplicationControlBar dock="true">
<mx:Button label="fade box"
click="fade_click();" />
<mx:Button label="wipe box"
click="wipe_click();" /> <mx:Spacer width="100%" /> <mx:Label text="effect pause ({slider.value} ms):" />
<mx:HSlider id="slider"
minimum="1000"
maximum="3000"
value="1500"
labels="[1000,2000,3000]"
liveDragging="true"
showTrackHighlight="true"
snapInterval="100"
tickInterval="500"
dataTipPrecision="0" />
</mx:ApplicationControlBar> <mx:Box id="box"
width="100%"
height="100%"
backgroundColor="haloSilver"
alpha="0.0" /> </mx:Application>