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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "webkit/glue/image_resource_fetcher.h"
#include "base/callback.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
#include "ui/gfx/size.h"
#include "webkit/glue/image_decoder.h"
#include "third_party/skia/include/core/SkBitmap.h"
using WebKit::WebFrame;
using WebKit::WebURLRequest;
using WebKit::WebURLResponse;
namespace webkit_glue {
ImageResourceFetcher::ImageResourceFetcher(
const GURL& image_url,
WebFrame* frame,
int id,
int image_size,
WebURLRequest::TargetType target_type,
Callback* callback)
: callback_(callback),
id_(id),
image_url_(image_url),
image_size_(image_size) {
fetcher_.reset(new ResourceFetcher(
image_url, frame, target_type,
NewCallback(this, &ImageResourceFetcher::OnURLFetchComplete)));
}
ImageResourceFetcher::~ImageResourceFetcher() {
if (!fetcher_->completed())
fetcher_->Cancel();
}
void ImageResourceFetcher::OnURLFetchComplete(
const WebURLResponse& response,
const std::string& data) {
SkBitmap bitmap;
if (!response.isNull() && response.httpStatusCode() == 200) {
// Request succeeded, try to convert it to an image.
ImageDecoder decoder(gfx::Size(image_size_, image_size_));
bitmap = decoder.Decode(
reinterpret_cast<const unsigned char*>(data.data()), data.size());
} // else case:
// If we get here, it means no image from server or couldn't decode the
// response as an image. The delegate will see a null image, indicating
// that an error occurred.
// Take care to clear callback_ before running the callback as it may lead to
// our destruction.
scoped_ptr<Callback> callback;
callback.swap(callback_);
callback->Run(this, bitmap);
}
} // namespace webkit_glue
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