1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "content/renderer/fetchers/multi_resolution_image_resource_fetcher.h" 6 7#include "base/bind.h" 8#include "base/bind_helpers.h" 9#include "content/child/image_decoder.h" 10#include "content/public/renderer/resource_fetcher.h" 11#include "third_party/WebKit/public/platform/WebURLResponse.h" 12#include "third_party/WebKit/public/web/WebFrame.h" 13#include "third_party/skia/include/core/SkBitmap.h" 14#include "ui/gfx/size.h" 15 16using blink::WebFrame; 17using blink::WebURLRequest; 18using blink::WebURLResponse; 19 20namespace content { 21 22MultiResolutionImageResourceFetcher::MultiResolutionImageResourceFetcher( 23 const GURL& image_url, 24 WebFrame* frame, 25 int id, 26 WebURLRequest::TargetType target_type, 27 const Callback& callback) 28 : callback_(callback), 29 id_(id), 30 http_status_code_(0), 31 image_url_(image_url) { 32 fetcher_.reset(ResourceFetcher::Create(image_url)); 33 fetcher_->Start( 34 frame, target_type, 35 base::Bind(&MultiResolutionImageResourceFetcher::OnURLFetchComplete, 36 base::Unretained(this))); 37} 38 39MultiResolutionImageResourceFetcher::~MultiResolutionImageResourceFetcher() { 40} 41 42void MultiResolutionImageResourceFetcher::OnURLFetchComplete( 43 const WebURLResponse& response, 44 const std::string& data) { 45 std::vector<SkBitmap> bitmaps; 46 if (!response.isNull()) { 47 http_status_code_ = response.httpStatusCode(); 48 GURL url(response.url()); 49 if (http_status_code_ == 200 || url.SchemeIsFile()) { 50 // Request succeeded, try to convert it to an image. 51 bitmaps = ImageDecoder::DecodeAll( 52 reinterpret_cast<const unsigned char*>(data.data()), data.size()); 53 } 54 } // else case: 55 // If we get here, it means no image from server or couldn't decode the 56 // response as an image. The delegate will see an empty vector. 57 58 // Take a reference to the callback as running the callback may lead to our 59 // destruction. 60 Callback callback = callback_; 61 callback.Run(this, bitmaps); 62} 63 64} // namespace content 65