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Flash platform – обзорный курс. Лекция 3

Flash platform – обзорный курс. Лекция 3. DisplayList – завершение Работа с медиа Сетевое взаимодейтсвие Локальное хранение и передача данных. Display List – древовидная структура. Фильтры. DisplayObject .filters :Array Пакет flash.filters GlowFilter BlurFilter DropShadowFilter

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Flash platform – обзорный курс. Лекция 3

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  1. Flash platform – обзорный курс.Лекция 3 DisplayList – завершение Работа с медиа Сетевое взаимодейтсвие Локальное хранение и передача данных

  2. Display List – древовидная структура

  3. Фильтры • DisplayObject.filters:Array • Пакет flash.filters • GlowFilter • BlurFilter • DropShadowFilter • ColorMatrixFilter • GradientBevelFilter • GradientGlowFilter • ConvolutionFilter • DisplacementMapFilter • ShaderFilter

  4. Фильтры • DisplayObject.filters:Array • Пакет flash.filters • GlowFilter • BlurFilter • DropShadowFilter • ColorMatrixFilter • GradientBevelFilter • GradientGlowFilter • ConvolutionFilter • DisplacementMapFilter • ShaderFilter myObject.filters = [new BlurFilter(), new GlowFilter(0x00FF00)];

  5. Маски DisplayObject.mask

  6. DisplayObject.mask:DisplayObject • varmask:Shape = new Mask(); • //draw mask • myObject.mask = mask;

  7. flash.display.BitmapData • .draw(source:IBitmapDrawable, matrix:Matrix = null, colorTransform:flash.geom:ColorTransform = null, blendMode:String = null, clipRect:Rectangle = null, smoothing:Boolean = false):void • Куча методов для работы с изображением • Display – with new Bitmap() • .getPixels(rect:Rectangle):ByteArray – извлечь пиксели.

  8. Лирическое отступление - ByteArray flash.utils.ByteArray – упакованный массив байтов

  9. ByteArray • .length:uint • .position:uint • .readByte():int • .readBytes(bytes:ByteArray, offset:uint = 0, length:uint = 0):void • .readBoolean():Boolean • .readDouble():Number, readFloat():Number, readInt():int …etc • .readUTF():String, .readUTFBytes(length:uint):String, .readMultiByte(length:uint, charSet:String):String • .readObject():* • .write*

  10. Работа с Медиа-данными Пакет flash.media Sound Microphone Video Camera

  11. flash.media.Sound • new Sound(); • sound.load(new URLRequest(‘soundUrl.mp3’)); • sound.play(startTime:Number= 0, loops:int = 0, sndTransform:flash.media:SoundTransform = null):SoundChannel • sound.close():void • sound.extract(target:ByteArray, length:Number, startPosition:Number = -1):Number • sound.id3:ID3Info • Events: • Event.OPEN • ProgressEvent.PROGRESS • Event.COMPLETE • IOErrorEvent.IO_ERROR • Event.ID3 • SampleDataEvent.SAMPLE_DATA

  12. flash.media.SoundTransform • .volume : Number (0 – 1) • … • flash.display.SimpleButton.soundTransform • flash.display.Sprite.soundTransform • flash.media.Microphone.soundTransform • flash.media.SoundChannel.soundTransform • flash.media.SoundMixer.soundTransform • flash.net.NetStream.soundTransform

  13. flash.media.SoundChannel • .position:Number (in ms) • .soundTransform:SoundTransform • .leftPeak:Number • .rightPeak:Number • .stop() • Events: • Event.SOUND_COMPLETE

  14. flash.media.SoundMixer • Global sound control class • .soundTransform:SoundTransform • .stopAll():void • .computeSpectrum(outputArray:ByteArray, FFTMode:Boolean = false, stretchFactor:int = 0):void

  15. flash.media.Microphone • .getMicrophone(index:int= -1):Microphone • .names:Array • … • Events: • ActivityEvent.ACTIVITY • StatusEvent.STATUS • SampleDataEvent.SAMPLE_DATA

  16. flash.media.Video • Extends DisplayObject • .attachCamera(camera:Camera):void • .attachNetStream(netStream:NetStream):void • .clear():void • .videoHeight:int • .videoWidth:int • .smoothing:Boolean

  17. flash.media.Camera • .names:Array • .getCamera(name:String= null):Camera • .setMode(width:int, height:int, fps:Number, favorArea:Boolean = true):void • … • Events: • ActivityEvent.ACTIVITY • StatusEvent.STATUS

  18. Взаимодействие с сетью Пакет flash.net URLLoader URLStream NetConnection, NetStream XMLSocket, Socket

  19. URLLoader • .load(request:URLRequest):void • URLRequest– new URLRequest(url:String = null) • .method – URLRequestMethod.GET/URLRequestMethod.POST • .data – data to be sent. URLVariables/ByteArray/String • .dataFormat:String = • URLLoaderDataFormat.TEXT • URLLoaderDataFormat.BINARY • URLLoaderDataFormat.VARIABLES • . data:* • .bytesTotal:uint • .bytesLoaded:uint Events: Event.OPEN ProgressEvent.PROGRESS SecurityErrorEvent.SECURITY_ERROR IOErrorEvent.IO_ERROR HTTPStatusEvent.HTTP_STATUS Event.COMPLETE

  20. varrequest:URLRequest = new URLRequest(‘http://mydomain.com/service’); vardata:URLVariables = new URLVariables(); data.user = “nikitap”; data.action = “remove”; /// etc request.data = data; request.method = URLRequestMethod.POST; varloader:URLLoader = new URLLoader(request); loader.addEventListener(Event.COMPLETE, loader_completeHandler); //…. private function loader_completeHandler(event:Event):void { varloader:URLLoader = URLLoader(event.target); trace(loader.data);}

  21. flash.net.URLStream • Поточная загрузка • ProgressEvent.PROGRESS – загрузка порции • Чтение – аналогично ByteArray (IDataInput)

  22. flash.net.FileReference • Чтение, запись и отправка локальный файлов; загрузка файлов с сервера • .browse(typeFilter:Array= null):Boolean • .load():void • .download(request:URLRequest, defaultFileName:String = null):void • .save(data:*, defaultFileName:String = null):void • .upload(request:URLRequest, uploadDataFieldName:String = "Filedata", testUpload:Boolean = false):void • .data : ByteArray • .name : String • .size : Number • .type : Number • Events: • Event.OPEN, ProgressEvent.PROGRESS, Event.COMPLETE • Event.SELECT, Event.CANCEL

  23. flash.net.NetConnection/ flash.net.NetStream • Воспроизведение .flv/.f4v – файлов по HTTP • Обращение к Flash Remoting– сервисам (BlazeDZ, ZendAMF, AMFPHP, LCDS, GraniteDS, etc…) • RTMP-cервера • P2P-cоедиения

  24. flash.net.NetConnection - .f4v-видео varnc:NetConnection = new NetConnection(); nc.connect(‘null’); varns:NetStream = new NetStream(ns); ns.play(“http://mydomain.com/myvideo.f4v”); varvideo:Video = new Video(); video.width = 640; video.height = 480; video.attachNetStream(ns); addChild(video);

  25. flash.net.XMLSocket / flash.net.Socket • TCP – соединение с сервером • Любые протоколы • XMLSocket – null-terminated messages • .connect(host:String, port:int):void • (for XMLSocket) .send(object:*) • (for Socket) – the same as ByteArray • Events: • Event.CONNECT, Event.CLOSE • (for XMLSocket) DataEvent.DATA (.data – received data) • (for Socket) ProgressEvent.SOCKET_DATA

  26. flash.media.Camera

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