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51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "sky/engine/config.h"
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#include "sky/engine/core/loader/CanvasImageLoader.h"
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#include "sky/engine/core/painting/CanvasImage.h"
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#include "sky/engine/platform/image-decoders/ImageDecoder.h"
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#include "sky/engine/platform/SharedBuffer.h"
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namespace blink {
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CanvasImageLoader::CanvasImageLoader(const String& src, PassOwnPtr<ImageLoaderCallback> callback)
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: callback_(callback) {
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// TODO(jackson): Figure out how to determine the proper base URL here
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KURL url = KURL(KURL(), src);
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fetcher_ = adoptPtr(new MojoFetcher(this, url));
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}
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CanvasImageLoader::~CanvasImageLoader() {
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}
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void CanvasImageLoader::OnReceivedResponse(mojo::URLResponsePtr response) {
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if (response->status_code != 200) {
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callback_->handleEvent(nullptr);
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return;
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}
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buffer_ = SharedBuffer::create();
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drainer_ =
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adoptPtr(new mojo::common::DataPipeDrainer(this, response->body.Pass()));
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}
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void CanvasImageLoader::OnDataAvailable(const void* data, size_t num_bytes) {
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buffer_->append(static_cast<const char*>(data), num_bytes);
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}
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void CanvasImageLoader::OnDataComplete() {
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OwnPtr<ImageDecoder> decoder =
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ImageDecoder::create(*buffer_.get(), ImageSource::AlphaPremultiplied,
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ImageSource::GammaAndColorProfileIgnored);
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decoder->setData(buffer_.get(), true);
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if (!decoder->failed() && decoder->frameCount() > 0) {
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RefPtr<CanvasImage> resultImage = CanvasImage::create();
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resultImage->setBitmap(decoder->frameBufferAtIndex(0)->getSkBitmap());
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callback_->handleEvent(resultImage.get());
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} else {
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callback_->handleEvent(nullptr);
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}
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}
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} // namespace blink
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