Implement ImageBitmap options premultiplyAlpha

third_party/WebKit/Source/core/imagebitmap/ImageBitmapFactories.cpp

 /*
  * Copyright (c) 2013, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 50 matching lines @@
         return value.getAsImageData();
     if (value.isImageBitmap())
         return value.getAsImageBitmap().get();
     ASSERT_NOT_REACHED();
     return nullptr;
 }
 
 ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, const ImageBitmapSourceUnion& bitmapSource, ExceptionState& exceptionState)
 {
     ImageBitmapOptions options;
+    options.setPremultiplyAlpha(true);
     return createImageBitmap(scriptState, eventTarget, bitmapSource, options, exceptionState);
 }
 
 ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, const ImageBitmapSourceUnion& bitmapSource, const ImageBitmapOptions& options, ExceptionState& exceptionState)
 {
     ImageBitmapSource* bitmapSourceInternal = toImageBitmapSourceInternal(bitmapSource);
     if (bitmapSourceInternal->isBlob()) {
         Blob* blob = static_cast<Blob*>(bitmapSourceInternal);
         ImageBitmapLoader* loader = ImageBitmapFactories::ImageBitmapLoader::create(from(eventTarget), IntRect(), options, scriptState);
         ScriptPromise promise = loader->promise();
         from(eventTarget).addLoader(loader);
         loader->loadBlobAsync(eventTarget.executionContext(), blob);
         return promise;
     }
     IntSize srcSize = bitmapSourceInternal->bitmapSourceSize();
     return createImageBitmap(scriptState, eventTarget, bitmapSourceInternal, 0, 0, srcSize.width(), srcSize.height(), options, exceptionState);
 }
 
 ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, const ImageBitmapSourceUnion& bitmapSource, int sx, int sy, int sw, int sh, ExceptionState& exceptionState)
 {
     ImageBitmapOptions options;
+    options.setPremultiplyAlpha(true);
     return createImageBitmap(scriptState, eventTarget, bitmapSource, sx, sy, sw, sh, options, exceptionState);
 }
 
 ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, const ImageBitmapSourceUnion& bitmapSource, int sx, int sy, int sw, int sh, const ImageBitmapOptions& options, ExceptionState& exceptionState)
 {
     ImageBitmapSource* bitmapSourceInternal = toImageBitmapSourceInternal(bitmapSource);
     return createImageBitmap(scriptState, eventTarget, bitmapSourceInternal, sx, sy, sw, sh, options, exceptionState);
 }
 
 ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, ImageBitmapSource* bitmapSource, int sx, int sy, int sw, int sh, const ImageBitmapOptions& options, ExceptionState& exceptionState)
@@ skipping 48 matching lines @@
 {
     ASSERT(m_pendingLoaders.contains(loader));
     m_pendingLoaders.remove(loader);
 }
 
 ImageBitmapFactories::ImageBitmapLoader::ImageBitmapLoader(ImageBitmapFactories& factory, const IntRect& cropRect, ScriptState* scriptState, const ImageBitmapOptions& options)
     : m_loader(FileReaderLoader::ReadAsArrayBuffer, this)
     , m_factory(&factory)
     , m_resolver(ScriptPromiseResolver::create(scriptState))
     , m_cropRect(cropRect)
-    , m_options(options)
 {
+    m_options.setPremultiplyAlpha(true);
 }
 
 void ImageBitmapFactories::ImageBitmapLoader::loadBlobAsync(ExecutionContext* context, Blob* blob)
 {
     m_loader.start(context, blob->blobDataHandle());
 }
 
 DEFINE_TRACE(ImageBitmapFactories)
 {
     visitor->trace(m_pendingLoaders);
@@ skipping 42 matching lines @@
     rejectPromise();
 }
 
 DEFINE_TRACE(ImageBitmapFactories::ImageBitmapLoader)
 {
     visitor->trace(m_factory);
     visitor->trace(m_resolver);
 }
 
 } // namespace blink