flex字体加载5
flex 字体另外一种加载方式：利用国外牛人写的字体加载组件。。
? 牛人写的字体加载组件：
/*** FontLoader 2.2 by Denis Kolyako. June 13, 2008. Last update: June 25, 2009.* Visit http://etcs.ru for documentation, updates and more free code.** You may distribute this class freely, provided it is not modified in any way (including* removing this header or changing the package path).* ** Please contact etc[at]mail.ru prior to distributing modified versions of this class.*//** * The FontLoader class lets you load any swf movie (ver. 6 or later), which contains embedded fonts to use these fonts in your application. */package fontload {import flash.display.Loader;import flash.events.Event;import flash.events.EventDispatcher;import flash.events.HTTPStatusEvent;import flash.events.IOErrorEvent;import flash.events.ProgressEvent;import flash.events.SecurityErrorEvent;import flash.net.URLLoader;import flash.net.URLLoaderDataFormat;import flash.net.URLRequest;import flash.system.ApplicationDomain;import flash.system.LoaderContext;import flash.text.Font;import flash.utils.ByteArray;import flash.utils.Endian;import flash.events.ErrorEvent;[Event(name="complete", type="flash.events.Event")][Event(name="open", type="flash.events.Event")][Event(name="ioError", type="flash.events.IOErrorEvent")][Event(name="verifyError", type="flash.events.IOErrorEvent")][Event(name="httpStatus", type="flash.events.HTTPStatusEvent")][Event(name="progress", type="flash.events.ProgressEvent")][Event(name="securityError", type="flash.events.SecurityErrorEvent")]/** * FontLoader class * * @authoretc * @version2.2 * @playerversionFlash 9 * @langversion3.0 */public class FontLoader extends EventDispatcher {/** * @private */private static const SWF_HEADER:ByteArray = new ByteArray();/** * @private */private static const CLASS_CODE:ByteArray = new ByteArray();/** * @private */private static const CLASS_NAME_PREFIX:String = 'Font$';/** * @private */private static const TAG_DO_ABC:uint = ((72 << 6) | 0x3F);/** * @private */private static const TAG_SYMBOL_CLASS:uint = ((76 << 6) | 0x3f);/** * @private */private static var _initialized:Boolean = false;/** * @private */private static function init():void {if (FontLoader._initialized) return;var ba:SWFByteArray = new SWFByteArray();ba.writeBytesFromString('7800055F00000FA000000C01004411080000004302FFFFFFBF150B0000000100466F6E744C69620000' +'BF1461020000010000000010002E00000000191272752E657463732E7574696C733A466F6E7400432F' + '55736572732F6574632F4465736B746F702F50726F6A656374732F466F6E744C6F616465724C69622F' + '7372633B72752F657463732F7574696C733B466F6E742E61731772752E657463732E7574696C733A46' + '6F6E742F466F6E74175B4F626A65637420466F6E7420666F6E744E616D653D2208666F6E744E616D65' + '0D2220666F6E745374796C653D2209666F6E745374796C650C2220666F6E74547970653D2208666F6E' + '745479706502225D1B72752E657463732E7574696C733A466F6E742F746F537472696E670653747269' + '6E6708746F537472696E67175F5F676F5F746F5F646566696E6974696F6E5F68656C700466696C6543' + '2F55736572732F6574632F4465736B746F702F50726F6A656374732F466F6E744C6F616465724C6962' + '2F7372632F72752F657463732F7574696C732F466F6E742E617303706F73033636380D72752E657463' + '732E7574696C7304466F6E740A666C6173682E74657874064F626A6563740335373006050116021614' + '161618010201030A07020607020807020A07020D07020E070315070415091501070217040000020000' + '00040000040C0000000200020F02101211130F02101211180106070905000101054100020100000001' + '030106440000010104000101040503D03047000001010105060EF103F018D030F019D04900F01A4700' + '00020201050620F103F01CD0302C05F01DD00401A02C07A0D00402A02C09A0D00403A02C0BA0480000' + '030201010421D030F103F0165D085D096609305D076607305D07660758001D1D6806F103F00B470000'); // Magic bytes :-)ba.position = 0;ba.readBytes(FontLoader.SWF_HEADER);ba.length = 0;ba.writeBytesFromString('392F55736572732F6574632F4465736B746F702F50726F6A656374732F466F6E744C6F616465724C69' + '622F7372633B3B466F6E743030302E61730568656C6C6F2B48656C6C6F2C20776F726C642120497320' + '616E79626F647920686572653F2057686F27732074686572653F0F466F6E743030302F466F6E743030' + '300D72752E657463732E7574696C7304466F6E74064F626A6563740A666C6173682E74657874175F5F' + '676F5F746F5F646566696E6974696F6E5F68656C700466696C65382F55736572732F6574632F446573' + '6B746F702F50726F6A656374732F466F6E744C6F616465724C69622F7372632F466F6E743030302E61' + '7303706F73023534060501160216071801160A00050702010703080702090705080300000200000006' + '0000000200010B020C0E0D0F0101020904000100000001020101440100010003000101050603D03047' + '0000010102060719F103F006D030EF01040008F007D049002C05F00885D5F009470000020201010527' + 'D030F103F00465005D036603305D046604305D026602305D02660258001D1D1D6801F103F002470000'); // Another magic bytes :-)ba.position = 0;ba.readBytes(FontLoader.CLASS_CODE);ba.length = 0;FontLoader._initialized = true;}/** * Creates a new FontLoader object. If you pass a valid URLRequest object to the FontLoader constructor, * the constructor automatically calls the load() function. * If you do not pass a valid URLRequest object to the FontLoader constructor, * you must call the load() function or the stream will not load. * * @param request (default = null) — The URL that points to an external SWF file. * @param autoRegister — Register loaded fonts automatically. */public function FontLoader(request:URLRequest = null, autoRegister:Boolean = true) {super();FontLoader.init();this._loader.dataFormat = URLLoaderDataFormat.BINARY;this._loader.addEventListener(Event.COMPLETE, this.handler_complete);this._loader.addEventListener(Event.OPEN, super.dispatchEvent);this._loader.addEventListener(HTTPStatusEvent.HTTP_STATUS, super.dispatchEvent);this._loader.addEventListener(IOErrorEvent.IO_ERROR, super.dispatchEvent);this._loader.addEventListener(ProgressEvent.PROGRESS, super.dispatchEvent);this._loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, super.dispatchEvent);if (request) this.load(request, autoRegister);}/** * @private */private const _loader:URLLoader = new URLLoader();/** * @private */private var _bytes:ByteArray;/** * @private */private var _libLoader:Loader;/** * @private */private var _fontCount:uint;/** * @private */private var _autoRegister:Boolean = true;/** * Sets automatic font registration. */public function set autoRegister(value:Boolean):void {if (this._autoRegister == value) return;this._autoRegister = value;if (value) this.registerFonts();}public function get autoRegister():Boolean {return this._autoRegister;}public function get bytesLoaded():uint {return this._loader.bytesLoaded;}public function get bytesTotal():uint {return this._loader.bytesTotal;}/** * @private */private const _fonts:Array = new Array();/** * Returns an array of font classes, which you can use to register any extracted font. */public function get fonts():Array {return this._fonts.concat();}/** * Initiates loading of an external SWF file from the specified URL. You can load another swf file, when previous operation completed (or stream closed by user). * * @param request:URLRequest — A URLRequest object specifying the URL to download. If the value of this parameter or the URLRequest.url property of the URLRequest object passed are null, Flash Player throws a null pointer error. * @param autoRegister — Register loaded fonts automatically. * * @event complete:Event — Dispatched after data has loaded and parsed successfully. * @event httpStatus:HTTPStatusEvent — If access is by HTTP, and the current Flash Player environment supports obtaining status codes, you may receive these events in addition to any complete or error event. * @event ioError:IOErrorEvent — The load operation could not be completed. * @event verifyError:IOErrorEvent — Dispatched when a parse operation fails (data has incorrect format). * @event open:Event — Dispatched when a load operation starts. * @event securityError:SecurityErrorEvent — A load operation attempted to retrieve data from a server outside the caller's security sandbox. This may be worked around using a policy file on the server. */public function load(request:URLRequest, autoRegister:Boolean = true):void {this.close();this._fonts.length = 0;this._fontCount = 0;this._autoRegister = autoRegister;this._loader.load(request);}/** * Loads from binary data stored in a ByteArray object. * * @param bytes:URLRequest — A ByteArray object. The specified ByteArray must contain valid SWF file. * @param autoRegister — Register loaded fonts automatically. * * @event complete:Event — Dispatched after data has loaded and parsed successfully. * @event httpStatus:HTTPStatusEvent — If access is by HTTP, and the current Flash Player environment supports obtaining status codes, you may receive these events in addition to any complete or error event. * @event ioError:IOErrorEvent — The load operation could not be completed. * @event verifyError:IOErrorEvent — Dispatched when a parse operation fails (data has incorrect format). * @event open:Event — Dispatched when a load operation starts. * @event securityError:SecurityErrorEvent — A load operation attempted to retrieve data from a server outside the caller's security sandbox. This may be worked around using a policy file on the server. */public function loadBytes(bytes:ByteArray, autoRegister:Boolean = true):void {this.close();this._fonts.length = 0;this._fontCount = 0;this._autoRegister = autoRegister;this.analyze(bytes, true);}/** * Closes the stream, causing any download of data to cease. */public function close():void {try {this._loader.close();} catch (error:Error) {}if (this._libLoader) {this._libLoader.contentLoaderInfo.removeEventListener(Event.COMPLETE, this.handler_libComplete);try {this._libLoader.close();} catch (error:Error) {}try {this._libLoader.unload();} catch (error:Error) {}this._libLoader = null;}}/** * Registers all loaded fonts. */public function registerFonts():void {for each (var font:Font in this._fonts) {Font.registerFont((font as Object).constructor);}}/** * @private */private function analyze(bytes:ByteArray, delayed:Boolean = false):void {var o:Object;var stringID:String;var id:uint;var fontID:uint;var tag:uintvar length:uint;var pos:Number;var tempData:ByteArray;var fontSWF:ByteArray;var context:LoaderContext;var data:ByteArray;try {data = new SWFByteArray(bytes);} catch (error:Error) {if (delayed) {this._libLoader = new Loader();this._libLoader.addEventListener(Event.ENTER_FRAME, this.handler_delayedVerifyError);} else {this.close();super.dispatchEvent(new IOErrorEvent(IOErrorEvent.VERIFY_ERROR));}return;}var fontData:Object = new Object();var classCodeLength:uint = FontLoader.CLASS_CODE.length;while (data.bytesAvailable) {tag = data.readUnsignedShort();id = tag >> 6;length = ((tag & 0x3F) == 0x3F) ? data.readUnsignedInt() : (tag & 0x3F);pos = data.position;switch (id) {case 13:case 48:case 62:case 73:case 75:case 88:fontID = data.readUnsignedShort();tempData = fontData[fontID] as ByteArray;if (!tempData) {tempData = new ByteArray();tempData.endian = Endian.LITTLE_ENDIAN;fontData[fontID] = tempData;}if ((tag & 0x3F) == 0x3F) {tempData.writeShort((id << 6) | 0x3F);tempData.writeUnsignedInt(length);} else {tempData.writeShort((id << 6) | (length & 0x3F));}tempData.writeShort(fontID);tempData.writeBytes(data, data.position, length - 2);break;}data.position = pos + length;}tempData = new ByteArray();tempData.endian = Endian.LITTLE_ENDIAN;tempData.writeBytes(FontLoader.SWF_HEADER);id = 0;for (o in fontData) {data = fontData[o] as ByteArray;if (data) {stringID = id.toString();while (stringID.length < 3) stringID = '0' + stringID;stringID = FontLoader.CLASS_NAME_PREFIX + stringID;tempData.writeShort(FontLoader.TAG_DO_ABC);tempData.writeUnsignedInt(10 + stringID.length + classCodeLength);tempData.writeUnsignedInt(0x002E0010);tempData.writeUnsignedInt(0x10000000);tempData.writeByte(stringID.length);tempData.writeUTFBytes(stringID);tempData.writeByte(0);tempData.writeBytes(FontLoader.CLASS_CODE);tempData.writeBytes(data);tempData.writeShort(FontLoader.TAG_SYMBOL_CLASS);tempData.writeUnsignedInt(5 + stringID.length);tempData.writeShort(1);tempData.writeShort(o as uint);tempData.writeUTFBytes(stringID);tempData.writeByte(0);id++;}}this._fontCount = id;if (this._fontCount) {tempData.writeUnsignedInt(0x00000040);fontSWF = new ByteArray();fontSWF.endian = Endian.LITTLE_ENDIAN;fontSWF.writeUTFBytes('FWS');fontSWF.writeByte(9);fontSWF.writeUnsignedInt(tempData.length + 8);fontSWF.writeBytes(tempData);this._libLoader = new Loader();this._libLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, this.handler_libComplete);context = new LoaderContext();if ('allowLoadBytesCodeExecution' in context) { // AIR compatibilitycontext['allowLoadBytesCodeExecution'] = true;}this._libLoader.loadBytes(fontSWF, context);} else {if (delayed) {this._libLoader = new Loader();this._libLoader.addEventListener(Event.ENTER_FRAME, this.handler_delayedComplete);} else {this.close();super.dispatchEvent(new Event(Event.COMPLETE));}}}/** * @private */private function handler_delayedComplete(event:Event):void {this._libLoader.removeEventListener(Event.ENTER_FRAME, this.handler_delayedComplete);this._libLoader = null;this.close();super.dispatchEvent(new Event(Event.COMPLETE));}/** * @private */private function handler_delayedVerifyError(event:Event):void {this._libLoader.removeEventListener(Event.ENTER_FRAME, this.handler_delayedVerifyError);this._libLoader = null;this.close();super.dispatchEvent(new IOErrorEvent(IOErrorEvent.VERIFY_ERROR));}/** * @private */private function handler_complete(event:Event):void {this.analyze(this._loader.data as ByteArray);}/** * @private */private function handler_libComplete(event:Event):void {var id:String;var i:uint;var fontClass:Class;var font:Font;var domain:ApplicationDomain = this._libLoader.contentLoaderInfo.applicationDomain;for (i = 0;i < this._fontCount;i++) {id = i.toString();while (id.length < 3) id = '0' + id;id = FontLoader.CLASS_NAME_PREFIX + id;if (domain.hasDefinition(id)) {fontClass = domain.getDefinition(id) as Class;font = new fontClass() as Font;if (font && font.fontName) { // Skip static fontsthis._fonts.push(font);if (this._autoRegister) Font.registerFont(fontClass);}}}this.close();super.dispatchEvent(new Event(Event.COMPLETE));}}}import flash.utils.ByteArray;import flash.utils.Endian;import flash.geom.Rectangle;internal class SWFByteArray extends ByteArray {/** * @private */private static const TAG_SWF:String = 'FWS';/** * @private */private static const TAG_SWF_COMPRESSED:String = 'CWS';public function SWFByteArray(data:ByteArray=null):void {super();super.endian = Endian.LITTLE_ENDIAN;var endian:String;var tag:String;var position:uint;if (data) {endian = data.endian;position = data.position;data.endian = Endian.LITTLE_ENDIAN;data.position = 0;if (data.bytesAvailable > 26) {tag = data.readUTFBytes(3);if (tag == SWFByteArray.TAG_SWF || tag == SWFByteArray.TAG_SWF_COMPRESSED) {this._version = data.readUnsignedByte();data.readUnsignedInt();data.readBytes(this);if (tag == SWFByteArray.TAG_SWF_COMPRESSED) super.uncompress();} else throw new ArgumentError('Error #2124: Loaded file is an unknown type.');this.readHeader();} else {throw new ArgumentError('Insufficient data.');}data.endian = endian;data.position = position;}}/** * @private */private var _bitIndex:uint;/** * @private */private var _version:uint;public function get version():uint {return this._version;}/** * @private */private var _frameRate:Number;public function get frameRate():Number {return this._frameRate;}/** * @private */private var _rect:Rectangle;public function get rect():Rectangle {return this._rect;}public function writeBytesFromString(bytesHexString:String):void {var length:uint = bytesHexString.length;for (var i:uint = 0;i<length;i += 2) {var hexByte:String = bytesHexString.substr(i, 2);var byte:uint = parseInt(hexByte, 16);writeByte(byte);}}public function readRect():Rectangle {var pos:uint = super.position;var byte:uint = this[pos];var bits:uint = byte >> 3;var xMin:Number = this.readBits(bits, 5) / 20;var xMax:Number = this.readBits(bits) / 20;var yMin:Number = this.readBits(bits) / 20;var yMax:Number = this.readBits(bits) / 20;super.position = pos + Math.ceil(((bits * 4) - 3) / 8) + 1;return new Rectangle(xMin, yMin, xMax - xMin, yMax - yMin);}public function readBits(length:uint, start:int = -1):Number {if (start < 0) start = this._bitIndex;this._bitIndex = start;var byte:uint = this[super.position];var out:Number = 0;var shift:Number = 0;var currentByteBitsLeft:uint = 8 - start;var bitsLeft:Number = length - currentByteBitsLeft;if (bitsLeft > 0) {super.position++;out = this.readBits(bitsLeft, 0) | ((byte & ((1 << currentByteBitsLeft) - 1)) << (bitsLeft));} else {out = (byte >> (8 - length - start)) & ((1 << length) - 1);this._bitIndex = (start + length) % 8;if (start + length > 7) super.position++;}return out;}public function traceArray(array:ByteArray):String { // for debugvar out:String = '';var pos:uint = array.position;var i:uint = 0;array.position = 0;while (array.bytesAvailable) {var str:String = array.readUnsignedByte().toString(16).toUpperCase();str = str.length < 2 ? '0'+str : str;out += str+' ';}array.position = pos;return out;}/** * @private */private function readFrameRate():void {if (this._version < 8) {this._frameRate = super.readUnsignedShort();} else {var fixed:Number = super.readUnsignedByte() / 0xFF;this._frameRate = super.readUnsignedByte() + fixed;}}/** * @private */private function readHeader():void {this._rect = this.readRect();this.readFrameRate();super.readShort(); // num of frames}}? 加载的swf文件，可以通过博客前面提到的两种方式生成：1。通过actionScript生成，2。通过css转换为swf
该组件均支持这两类的swf字体。。。
