Actionscript 3 如何在AS3中加载Tlf中的波斯语文本文件？

我有文本文件：File.txt:

1301，嗨，我的闪光灯

3001，سابببببد

在我的代码中，加载文本文件的代码是：

var-url:URLRequest=newurlrequest（“file.txt”）；
var n=数量；
变量加载器：URLLoader=新的URLLoader（）；
loader.load（url）；
loader.addEventListener（Event.COMPLETE、loaderComplete）；
函数加载程序完成（e:事件）：无效
{
tt.text=loader.data；
}

问题是数据加载正确（假设.txt文件以unicode格式正确编码。请使用记事本+）但文本字段无法呈现特殊的unicode文本、波斯语、阿拉伯语或希伯来语。 不幸的是，唯一可用的解决方案是利用flashcs5中的“TLFTextField”组件，该组件由于实现笨拙而在以后的版本中被删除。无论如何，虽然有点晚了，但我在这里发布了使用tlf的解决方案，因为使用tlf正确渲染文本可能会非常痛苦，给你：

• 下载“textLayout.swc”和“tlfruntime.swc”
• 将这些SWC添加到项目库中
• 嵌入包含unicode语言符号的字体（本例中为首选的波斯语字体）这一点非常重要，因为并非每台目标机器都有这种字体，即使显示文本，这也足以避免产生抗锯齿文本
• 确保从字体属性的ActionScript选项卡中选择了FTE（DF4）
• 您必须实例化嵌入的字体。在下面的代码中，我们已经完成了这项工作。假设embeddedFont是嵌入字体的类名
• 使用以下函数将文本呈现到tlf中（请注意，这不是在flash timeline中编写的代码，它是在单独的编辑器中编写的，由flex sdk编译）：

import fl.text.TLFTextField;
import flash.text.AntiAliasType;
import flash.text.engine.FontLookup;
import flash.text.Font;
import flash.text.TextFieldAutoSize;
import flash.utils.getDefinitionByName;
import flashx.textLayout.elements.TextFlow;
import flashx.textLayout.formats.TextAlign;
import flashx.textLayout.formats.TextLayoutFormat;
import flashx.textLayout.formats.VerticalAlign;
private var _font:Font= new embeddedFont() as Font;
/**
 * Creates a center registered TLFTextField with the given text
 * @param   text targer text
 * @param   layoutFormat an object containing layoutFormat data. something like { textIndent: 8, color: 0xAAAAAA, fontFamily: "tahoma", fontSize: 28, autoSize: "center", antiAliasType: "advanced" }
 * @param   width width of the TLFTextField, auto set if 0 
 * @param   height height of the TLFTextField, auto set if 0 
 * @return  a center registered TLFTextField with the given text
 */
public function text(text:String,  layoutFormat:Object = null, width:int = 0, height:int = 0):TLFTextField
{
    var _txt:TLFTextField = new TLFTextField();
    var _layoutFormat:TextLayoutFormat = new TextLayoutFormat();
    if (layoutFormat == null) layoutFormat = new Object();
    // creating the textfield
    if (width != 0) _txt.width = width;
    if (height != 0) _txt.height = height;
    _txt.selectable = false;
    _txt.embedFonts = true;
    _txt.multiline = true;
    //if either width or height are 0(not passed to function) and the wordWrap is true, autoSize wont work and width or height will be 0
    if (width != 0 && height != 0) _txt.wordWrap = true;
    if (layoutFormat.backgroud != undefined) _txt.background = layoutFormat.backgroud;
    if (layoutFormat.backgroundColor != undefined) _txt.backgroundColor = layoutFormat.backgroundColor;
    _txt.autoSize = (layoutFormat.autoSize != undefined)?(layoutFormat.autoSize) : (TextFieldAutoSize.CENTER);
    _txt.verticalAlign=(layoutFormat.verticalAlign != undefined)?(layoutFormat.verticalAlign) : (VerticalAlign.MIDDLE)
    _txt.antiAliasType = (layoutFormat.antiAliasType != undefined)?(layoutFormat.antiAliasType) : (AntiAliasType.ADVANCED);
    // creating layout format
    _layoutFormat.textAlign = (layoutFormat.textAlign != undefined)?(layoutFormat.textAlign):(TextAlign.CENTER);
    _layoutFormat.textIndent = (layoutFormat.textIndent != undefined)?(layoutFormat.textIndent) : (8);
    _layoutFormat.fontLookup = FontLookup.EMBEDDED_CFF;
    _layoutFormat.color = (layoutFormat.color != undefined)?(layoutFormat.color) : (0xFFFFFF);
    _layoutFormat.fontFamily = (layoutFormat.fontFamily != undefined)?(layoutFormat.fontFamily) : (_font.fontName);
    _layoutFormat.fontSize = (layoutFormat.fontSize != undefined)?(layoutFormat.fontSize) : (42);
    //setting text flow, text and attaching layout format
    var _textFlow:TextFlow = _txt.textFlow;
    _textFlow.hostFormat = _layoutFormat;
    _textFlow.flowComposer.updateAllControllers();
    _txt.text = text;
    return _txt;
}

private var _tlf:TLFTextField = text("سلام", { textIndent: 8, color: 0xAAAAAA, fontSize: 28, autoSize: "center", antiAliasType: "advanced" } );
stage.addChild(_tlf);

• 使用此代码获取TLFTextField并将其添加到显示：

import fl.text.TLFTextField;
import flash.text.AntiAliasType;
import flash.text.engine.FontLookup;
import flash.text.Font;
import flash.text.TextFieldAutoSize;
import flash.utils.getDefinitionByName;
import flashx.textLayout.elements.TextFlow;
import flashx.textLayout.formats.TextAlign;
import flashx.textLayout.formats.TextLayoutFormat;
import flashx.textLayout.formats.VerticalAlign;
private var _font:Font= new embeddedFont() as Font;
/**
 * Creates a center registered TLFTextField with the given text
 * @param   text targer text
 * @param   layoutFormat an object containing layoutFormat data. something like { textIndent: 8, color: 0xAAAAAA, fontFamily: "tahoma", fontSize: 28, autoSize: "center", antiAliasType: "advanced" }
 * @param   width width of the TLFTextField, auto set if 0 
 * @param   height height of the TLFTextField, auto set if 0 
 * @return  a center registered TLFTextField with the given text
 */
public function text(text:String,  layoutFormat:Object = null, width:int = 0, height:int = 0):TLFTextField
{
    var _txt:TLFTextField = new TLFTextField();
    var _layoutFormat:TextLayoutFormat = new TextLayoutFormat();
    if (layoutFormat == null) layoutFormat = new Object();
    // creating the textfield
    if (width != 0) _txt.width = width;
    if (height != 0) _txt.height = height;
    _txt.selectable = false;
    _txt.embedFonts = true;
    _txt.multiline = true;
    //if either width or height are 0(not passed to function) and the wordWrap is true, autoSize wont work and width or height will be 0
    if (width != 0 && height != 0) _txt.wordWrap = true;
    if (layoutFormat.backgroud != undefined) _txt.background = layoutFormat.backgroud;
    if (layoutFormat.backgroundColor != undefined) _txt.backgroundColor = layoutFormat.backgroundColor;
    _txt.autoSize = (layoutFormat.autoSize != undefined)?(layoutFormat.autoSize) : (TextFieldAutoSize.CENTER);
    _txt.verticalAlign=(layoutFormat.verticalAlign != undefined)?(layoutFormat.verticalAlign) : (VerticalAlign.MIDDLE)
    _txt.antiAliasType = (layoutFormat.antiAliasType != undefined)?(layoutFormat.antiAliasType) : (AntiAliasType.ADVANCED);
    // creating layout format
    _layoutFormat.textAlign = (layoutFormat.textAlign != undefined)?(layoutFormat.textAlign):(TextAlign.CENTER);
    _layoutFormat.textIndent = (layoutFormat.textIndent != undefined)?(layoutFormat.textIndent) : (8);
    _layoutFormat.fontLookup = FontLookup.EMBEDDED_CFF;
    _layoutFormat.color = (layoutFormat.color != undefined)?(layoutFormat.color) : (0xFFFFFF);
    _layoutFormat.fontFamily = (layoutFormat.fontFamily != undefined)?(layoutFormat.fontFamily) : (_font.fontName);
    _layoutFormat.fontSize = (layoutFormat.fontSize != undefined)?(layoutFormat.fontSize) : (42);
    //setting text flow, text and attaching layout format
    var _textFlow:TextFlow = _txt.textFlow;
    _textFlow.hostFormat = _layoutFormat;
    _textFlow.flowComposer.updateAllControllers();
    _txt.text = text;
    return _txt;
}

private var _tlf:TLFTextField = text("سلام", { textIndent: 8, color: 0xAAAAAA, fontSize: 28, autoSize: "center", antiAliasType: "advanced" } );
stage.addChild(_tlf);

请注意，根据我的经验，用RTL语言创建tlf文本时有100毫秒的延迟。确保在正确的时间（没有动画、音频或视频的情况下）创建所有文本，否则会出现一个小停顿，足以破坏用户体验。

看一看。