1 /* 2 * Copyright (c) 2013, Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef ImageBitmapFactories_h 32 #define ImageBitmapFactories_h 33 34 #include "bindings/v8/ScriptPromise.h" 35 #include "bindings/v8/ScriptPromiseResolverWithContext.h" 36 #include "bindings/v8/ScriptState.h" 37 #include "core/fileapi/FileReaderLoader.h" 38 #include "core/fileapi/FileReaderLoaderClient.h" 39 #include "platform/Supplementable.h" 40 #include "platform/geometry/IntRect.h" 41 #include "wtf/Forward.h" 42 #include "wtf/HashSet.h" 43 44 namespace WebCore { 45 46 class Blob; 47 class CanvasRenderingContext2D; 48 class EventTarget; 49 class ExceptionState; 50 class HTMLCanvasElement; 51 class HTMLImageElement; 52 class HTMLVideoElement; 53 class ImageBitmap; 54 class ImageData; 55 class ExecutionContext; 56 57 class ImageBitmapFactories FINAL : public NoBaseWillBeGarbageCollectedFinalized<ImageBitmapFactories>, public WillBeHeapSupplement<LocalDOMWindow>, public WillBeHeapSupplement<WorkerGlobalScope> { 58 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(ImageBitmapFactories); 59 60 public: 61 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, HTMLImageElement*, ExceptionState&); 62 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, HTMLImageElement*, int sx, int sy, int sw, int sh, ExceptionState&); 63 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, HTMLVideoElement*, ExceptionState&); 64 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, HTMLVideoElement*, int sx, int sy, int sw, int sh, ExceptionState&); 65 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, CanvasRenderingContext2D*, ExceptionState&); 66 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, CanvasRenderingContext2D*, int sx, int sy, int sw, int sh, ExceptionState&); 67 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, HTMLCanvasElement*, ExceptionState&); 68 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, HTMLCanvasElement*, int sx, int sy, int sw, int sh, ExceptionState&); 69 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, Blob*, ExceptionState&); 70 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, Blob*, int sx, int sy, int sw, int sh, ExceptionState&); 71 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, ImageData*, ExceptionState&); 72 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, ImageData*, int sx, int sy, int sw, int sh, ExceptionState&); 73 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, ImageBitmap*, ExceptionState&); 74 static ScriptPromise createImageBitmap(ScriptState*, EventTarget&, ImageBitmap*, int sx, int sy, int sw, int sh, ExceptionState&); 75 76 virtual ~ImageBitmapFactories() { } 77 78 void trace(Visitor*); 79 80 protected: 81 static const char* supplementName(); 82 83 private: 84 class ImageBitmapLoader FINAL : public GarbageCollectedFinalized<ImageBitmapLoader>, public FileReaderLoaderClient { 85 public: 86 static ImageBitmapLoader* create(ImageBitmapFactories& factory, const IntRect& cropRect, ScriptState* scriptState) 87 { 88 return new ImageBitmapLoader(factory, cropRect, scriptState); 89 } 90 91 void loadBlobAsync(ExecutionContext*, Blob*); 92 ScriptPromise promise() { return m_resolver->promise(); } 93 94 void trace(Visitor*); 95 96 virtual ~ImageBitmapLoader() { } 97 98 private: 99 ImageBitmapLoader(ImageBitmapFactories&, const IntRect&, ScriptState*); 100 101 void rejectPromise(); 102 103 // FileReaderLoaderClient 104 virtual void didStartLoading() OVERRIDE { } 105 virtual void didReceiveData() OVERRIDE { } 106 virtual void didFinishLoading() OVERRIDE; 107 virtual void didFail(FileError::ErrorCode) OVERRIDE; 108 109 FileReaderLoader m_loader; 110 RawPtrWillBeMember<ImageBitmapFactories> m_factory; 111 RefPtr<ScriptPromiseResolverWithContext> m_resolver; 112 IntRect m_cropRect; 113 }; 114 115 static ImageBitmapFactories& from(EventTarget&); 116 117 template<class GlobalObject> 118 static ImageBitmapFactories& fromInternal(GlobalObject&); 119 120 void addLoader(ImageBitmapLoader*); 121 void didFinishLoading(ImageBitmapLoader*); 122 123 PersistentHeapHashSetWillBeHeapHashSet<Member<ImageBitmapLoader> > m_pendingLoaders; 124 }; 125 126 } // namespace WebCore 127 128 #endif // ImageBitmapFactories_h 129
