| /* |
| * 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 |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "core/imagebitmap/ImageBitmapFactories.h" |
| |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "bindings/core/v8/ScriptPromiseResolver.h" |
| #include "core/dom/ExecutionContext.h" |
| #include "core/fileapi/Blob.h" |
| #include "core/frame/ImageBitmap.h" |
| #include "core/frame/LocalDOMWindow.h" |
| #include "core/html/HTMLCanvasElement.h" |
| #include "core/html/HTMLImageElement.h" |
| #include "core/html/HTMLVideoElement.h" |
| #include "core/html/ImageData.h" |
| #include "core/html/canvas/CanvasRenderingContext2D.h" |
| #include "core/workers/WorkerGlobalScope.h" |
| #include "platform/SharedBuffer.h" |
| #include "platform/graphics/BitmapImage.h" |
| #include "platform/graphics/ImageSource.h" |
| #include "platform/graphics/skia/NativeImageSkia.h" |
| #include <v8.h> |
| |
| namespace blink { |
| |
| static LayoutSize sizeFor(HTMLImageElement* image) |
| { |
| if (ImageResource* cachedImage = image->cachedImage()) |
| return cachedImage->imageSizeForRenderer(image->renderer(), 1.0f); // FIXME: Not sure about this. |
| return IntSize(); |
| } |
| |
| static IntSize sizeFor(HTMLVideoElement* video) |
| { |
| if (blink::WebMediaPlayer* webMediaPlayer = video->webMediaPlayer()) |
| return webMediaPlayer->naturalSize(); |
| return IntSize(); |
| } |
| |
| static ScriptPromise fulfillImageBitmap(ScriptState* scriptState, PassRefPtrWillBeRawPtr<ImageBitmap> imageBitmap) |
| { |
| RefPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState); |
| ScriptPromise promise = resolver->promise(); |
| if (imageBitmap) { |
| resolver->resolve(imageBitmap); |
| } else { |
| resolver->reject(ScriptValue(scriptState, v8::Null(scriptState->isolate()))); |
| } |
| return promise; |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, HTMLImageElement* image, ExceptionState& exceptionState) |
| { |
| LayoutSize s = sizeFor(image); |
| return createImageBitmap(scriptState, eventTarget, image, 0, 0, s.width(), s.height(), exceptionState); |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, HTMLImageElement* image, int sx, int sy, int sw, int sh, ExceptionState& exceptionState) |
| { |
| // This variant does not work in worker threads. |
| ASSERT(eventTarget.toDOMWindow()); |
| |
| if (!image->cachedImage()) { |
| exceptionState.throwDOMException(InvalidStateError, "No image can be retrieved from the provided element."); |
| return ScriptPromise(); |
| } |
| if (image->cachedImage()->image()->isSVGImage()) { |
| exceptionState.throwDOMException(InvalidStateError, "The image element contains an SVG image, which is unsupported."); |
| return ScriptPromise(); |
| } |
| if (!sw || !sh) { |
| exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width")); |
| return ScriptPromise(); |
| } |
| if (!image->cachedImage()->image()->currentFrameHasSingleSecurityOrigin()) { |
| exceptionState.throwSecurityError("The source image contains image data from multiple origins."); |
| return ScriptPromise(); |
| } |
| if (!image->cachedImage()->passesAccessControlCheck(eventTarget.toDOMWindow()->document()->securityOrigin()) && eventTarget.toDOMWindow()->document()->securityOrigin()->taintsCanvas(image->src())) { |
| exceptionState.throwSecurityError("Cross-origin access to the source image is denied."); |
| return ScriptPromise(); |
| } |
| // FIXME: make ImageBitmap creation asynchronous crbug.com/258082 |
| return fulfillImageBitmap(scriptState, ImageBitmap::create(image, IntRect(sx, sy, sw, sh))); |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, HTMLVideoElement* video, ExceptionState& exceptionState) |
| { |
| IntSize s = sizeFor(video); |
| return createImageBitmap(scriptState, eventTarget, video, 0, 0, s.width(), s.height(), exceptionState); |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, HTMLVideoElement* video, int sx, int sy, int sw, int sh, ExceptionState& exceptionState) |
| { |
| // This variant does not work in worker threads. |
| ASSERT(eventTarget.toDOMWindow()); |
| |
| if (video->networkState() == HTMLMediaElement::NETWORK_EMPTY) { |
| exceptionState.throwDOMException(InvalidStateError, "The provided element has not retrieved data."); |
| return ScriptPromise(); |
| } |
| if (video->readyState() <= HTMLMediaElement::HAVE_METADATA) { |
| exceptionState.throwDOMException(InvalidStateError, "The provided element's player has no current data."); |
| return ScriptPromise(); |
| } |
| if (!sw || !sh) { |
| exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width")); |
| return ScriptPromise(); |
| } |
| if (!video->hasSingleSecurityOrigin()) { |
| exceptionState.throwSecurityError("The source video contains image data from multiple origins."); |
| return ScriptPromise(); |
| } |
| if (!video->webMediaPlayer()->didPassCORSAccessCheck() |
| && eventTarget.toDOMWindow()->document()->securityOrigin()->taintsCanvas(video->currentSrc())) { |
| exceptionState.throwSecurityError("Cross-origin access to the source video is denied."); |
| return ScriptPromise(); |
| } |
| // FIXME: make ImageBitmap creation asynchronous crbug.com/258082 |
| return fulfillImageBitmap(scriptState, ImageBitmap::create(video, IntRect(sx, sy, sw, sh))); |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, CanvasRenderingContext2D* context, ExceptionState& exceptionState) |
| { |
| return createImageBitmap(scriptState, eventTarget, context->canvas(), exceptionState); |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, CanvasRenderingContext2D* context, int sx, int sy, int sw, int sh, ExceptionState& exceptionState) |
| { |
| return createImageBitmap(scriptState, eventTarget, context->canvas(), sx, sy, sw, sh, exceptionState); |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, HTMLCanvasElement* canvas, ExceptionState& exceptionState) |
| { |
| return createImageBitmap(scriptState, eventTarget, canvas, 0, 0, canvas->width(), canvas->height(), exceptionState); |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, HTMLCanvasElement* canvas, int sx, int sy, int sw, int sh, ExceptionState& exceptionState) |
| { |
| // This variant does not work in worker threads. |
| ASSERT(eventTarget.toDOMWindow()); |
| |
| if (!canvas->originClean()) { |
| exceptionState.throwSecurityError("The canvas element provided is tainted with cross-origin data."); |
| return ScriptPromise(); |
| } |
| if (!sw || !sh) { |
| exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width")); |
| return ScriptPromise(); |
| } |
| |
| // FIXME: make ImageBitmap creation asynchronous crbug.com/258082 |
| return fulfillImageBitmap(scriptState, canvas->buffer() ? ImageBitmap::create(canvas, IntRect(sx, sy, sw, sh)) : nullptr); |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, Blob* blob, ExceptionState& exceptionState) |
| { |
| ImageBitmapLoader* loader = ImageBitmapFactories::ImageBitmapLoader::create(from(eventTarget), IntRect(), scriptState); |
| ScriptPromise promise = loader->promise(); |
| from(eventTarget).addLoader(loader); |
| loader->loadBlobAsync(eventTarget.executionContext(), blob); |
| return promise; |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, Blob* blob, int sx, int sy, int sw, int sh, ExceptionState& exceptionState) |
| { |
| if (!sw || !sh) { |
| exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width")); |
| return ScriptPromise(); |
| } |
| ImageBitmapLoader* loader = ImageBitmapFactories::ImageBitmapLoader::create(from(eventTarget), IntRect(sx, sy, sw, sh), scriptState); |
| ScriptPromise promise = loader->promise(); |
| from(eventTarget).addLoader(loader); |
| loader->loadBlobAsync(eventTarget.executionContext(), blob); |
| return promise; |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, ImageData* data, ExceptionState& exceptionState) |
| { |
| return createImageBitmap(scriptState, eventTarget, data, 0, 0, data->width(), data->height(), exceptionState); |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, ImageData* data, int sx, int sy, int sw, int sh, ExceptionState& exceptionState) |
| { |
| if (!sw || !sh) { |
| exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width")); |
| return ScriptPromise(); |
| } |
| // FIXME: make ImageBitmap creation asynchronous crbug.com/258082 |
| return fulfillImageBitmap(scriptState, ImageBitmap::create(data, IntRect(sx, sy, sw, sh))); |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, ImageBitmap* bitmap, ExceptionState& exceptionState) |
| { |
| return createImageBitmap(scriptState, eventTarget, bitmap, 0, 0, bitmap->width(), bitmap->height(), exceptionState); |
| } |
| |
| ScriptPromise ImageBitmapFactories::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, ImageBitmap* bitmap, int sx, int sy, int sw, int sh, ExceptionState& exceptionState) |
| { |
| if (!sw || !sh) { |
| exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width")); |
| return ScriptPromise(); |
| } |
| // FIXME: make ImageBitmap creation asynchronous crbug.com/258082 |
| return fulfillImageBitmap(scriptState, ImageBitmap::create(bitmap, IntRect(sx, sy, sw, sh))); |
| } |
| |
| const char* ImageBitmapFactories::supplementName() |
| { |
| return "ImageBitmapFactories"; |
| } |
| |
| ImageBitmapFactories& ImageBitmapFactories::from(EventTarget& eventTarget) |
| { |
| if (LocalDOMWindow* window = eventTarget.toDOMWindow()) |
| return fromInternal(*window); |
| |
| ASSERT(eventTarget.executionContext()->isWorkerGlobalScope()); |
| return ImageBitmapFactories::fromInternal(*toWorkerGlobalScope(eventTarget.executionContext())); |
| } |
| |
| template<class GlobalObject> |
| ImageBitmapFactories& ImageBitmapFactories::fromInternal(GlobalObject& object) |
| { |
| ImageBitmapFactories* supplement = static_cast<ImageBitmapFactories*>(WillBeHeapSupplement<GlobalObject>::from(object, supplementName())); |
| if (!supplement) { |
| supplement = new ImageBitmapFactories(); |
| WillBeHeapSupplement<GlobalObject>::provideTo(object, supplementName(), adoptPtrWillBeNoop(supplement)); |
| } |
| return *supplement; |
| } |
| |
| void ImageBitmapFactories::addLoader(ImageBitmapLoader* loader) |
| { |
| m_pendingLoaders.add(loader); |
| } |
| |
| void ImageBitmapFactories::didFinishLoading(ImageBitmapLoader* loader) |
| { |
| ASSERT(m_pendingLoaders.contains(loader)); |
| m_pendingLoaders.remove(loader); |
| } |
| |
| ImageBitmapFactories::ImageBitmapLoader::ImageBitmapLoader(ImageBitmapFactories& factory, const IntRect& cropRect, ScriptState* scriptState) |
| : m_loader(FileReaderLoader::ReadAsArrayBuffer, this) |
| , m_factory(&factory) |
| , m_resolver(ScriptPromiseResolver::create(scriptState)) |
| , m_cropRect(cropRect) |
| { |
| } |
| |
| void ImageBitmapFactories::ImageBitmapLoader::loadBlobAsync(ExecutionContext* context, Blob* blob) |
| { |
| m_loader.start(context, blob->blobDataHandle()); |
| } |
| |
| void ImageBitmapFactories::trace(Visitor* visitor) |
| { |
| visitor->trace(m_pendingLoaders); |
| WillBeHeapSupplement<LocalDOMWindow>::trace(visitor); |
| WillBeHeapSupplement<WorkerGlobalScope>::trace(visitor); |
| } |
| |
| void ImageBitmapFactories::ImageBitmapLoader::rejectPromise() |
| { |
| m_resolver->reject(ScriptValue(m_resolver->scriptState(), v8::Null(m_resolver->scriptState()->isolate()))); |
| m_factory->didFinishLoading(this); |
| } |
| |
| void ImageBitmapFactories::ImageBitmapLoader::didFinishLoading() |
| { |
| if (!m_loader.arrayBufferResult()) { |
| rejectPromise(); |
| return; |
| } |
| RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create((char*)m_loader.arrayBufferResult()->data(), m_loader.arrayBufferResult()->byteLength()); |
| |
| OwnPtr<ImageSource> source = adoptPtr(new ImageSource()); |
| source->setData(*sharedBuffer, true); |
| RefPtr<NativeImageSkia> imageSkia = source->createFrameAtIndex(0); |
| if (!imageSkia) { |
| rejectPromise(); |
| return; |
| } |
| |
| RefPtr<Image> image = BitmapImage::create(imageSkia); |
| if (!image->width() || !image->height()) { |
| rejectPromise(); |
| return; |
| } |
| if (!m_cropRect.width() && !m_cropRect.height()) { |
| // No cropping variant was called. |
| m_cropRect = IntRect(IntPoint(), image->size()); |
| } |
| |
| RefPtrWillBeRawPtr<ImageBitmap> imageBitmap = ImageBitmap::create(image.get(), m_cropRect); |
| m_resolver->resolve(imageBitmap.release()); |
| m_factory->didFinishLoading(this); |
| } |
| |
| void ImageBitmapFactories::ImageBitmapLoader::didFail(FileError::ErrorCode) |
| { |
| rejectPromise(); |
| } |
| |
| void ImageBitmapFactories::ImageBitmapLoader::trace(Visitor* visitor) |
| { |
| visitor->trace(m_factory); |
| } |
| |
| } // namespace blink |