[AS3]as3处理文本,处理文本内容,格式化文本框文本

有三种方式对文本进行格式化：HTML标签格式化、使用TextFormat对象、CSS样式

* HTML标签格式化示例： textBox.htmlText = "<B>粗体文本</B><U>下划线文本</U>";

* TextFormat对象示例：(注意：只对setTextFormat之前的代码有效)

var textFormat:TextFormat = new TextFormat();

textFormat.color = 0xFF0000;

textFormat.htmlText = "有效";

//也可以对部分文字进行格式化，例如:textBox.setTextFormat(textFormat,3,textBox.text.length);

textBox.setTextFormat(textFormat); textFormat.htmlText = "无效";

* CSS样式示例：(注意：只对CSS定义之后的代码有效)

var css:StyleSheet = new StyleSheet();

var styleObj:Object = {color:"#FF0000"};

css.setStyle(".stdStyle",styleObj);

textBox.styleSheet = css;

textBox.htmlText = "不潮不用花钱";

this.addChild(textBox);

package {    
    import flash.display.Sprite;    
    import flash.events.Event;    
    import flash.events.MouseEvent;    
    import flash.net.URLLoader;    
    import flash.net.URLRequest;    
    import flash.text.StyleSheet;    
    import flash.text.TextField;    
    import flash.text.TextFieldAutoSize;    
   
    public class Sample0324 extends Sprite    
    {           
        private var label:TextField;    
        private var text:String = "here comes <span class='stdText'>wayne</span>";    
            
        public function Sample0324()    
        {                       
            var btnRed:TextField = new TextField();    
            btnRed.text = "CuPlayer.com提示：应用红色样式";    
            btnRed.y = 100;    
            btnRed.addEventListener(MouseEvent.CLICK,onRedClick);    
            this.addChild(btnRed);    
                
            var btnGreen:TextField = new TextField();    
            btnGreen.text = "CuPlayer.com提示：应用绿色样式";    
            btnGreen.y = 200;    
            btnGreen.addEventListener(MouseEvent.CLICK,onGreenClick);    
            this.addChild(btnGreen);    
                
            label = new TextField();        
            label.autoSize = TextFieldAutoSize.CENTER;    
            label.htmlText = text;    
            this.addChild(label);    
        }    
            
        private function onRedClick(event:MouseEvent):void    
        {    
            var loader:URLLoader = new URLLoader();    
            loader.load(new URLRequest("StdStyle.css"));    
            loader.addEventListener(Event.COMPLETE,onLoadComplete);    
        }    
            
        private function onGreenClick(event:MouseEvent):void    
        {    
            var loader:URLLoader = new URLLoader();    
            loader.load(new URLRequest("StdStyle2.css"));    
            loader.addEventListener(Event.COMPLETE,onLoadComplete);    
        }    
            
        private function onLoadComplete(event:Event):void    
        {    
            var css:StyleSheet = new StyleSheet();    
            css.parseCSS((event.target  as  URLLoader).data);    
            label.styleSheet = css;     
                
            label.htmlText = text;    
        }       
    }    
}