multi_resolution_image_resource_fetcher.cc revision 7d4cd473f85ac64c3747c96c277f9e506a0d2246
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles)#include "content/renderer/fetchers/multi_resolution_image_resource_fetcher.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/bind.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/bind_helpers.h" 97d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles)#include "third_party/WebKit/public/web/WebFrame.h" 10a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles)#include "third_party/skia/include/core/SkBitmap.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/size.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "webkit/glue/image_decoder.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using WebKit::WebFrame; 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using WebKit::WebURLRequest; 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using WebKit::WebURLResponse; 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles)namespace content { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)MultiResolutionImageResourceFetcher::MultiResolutionImageResourceFetcher( 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const GURL& image_url, 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WebFrame* frame, 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int id, 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WebURLRequest::TargetType target_type, 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Callback& callback) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : callback_(callback), 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) id_(id), 2890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) http_status_code_(0), 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) image_url_(image_url) { 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fetcher_.reset(new ResourceFetcher( 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) image_url, frame, target_type, 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Bind(&MultiResolutionImageResourceFetcher::OnURLFetchComplete, 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Unretained(this)))); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)MultiResolutionImageResourceFetcher::~MultiResolutionImageResourceFetcher() { 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!fetcher_->completed()) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fetcher_->Cancel(); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void MultiResolutionImageResourceFetcher::OnURLFetchComplete( 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const WebURLResponse& response, 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& data) { 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<SkBitmap> bitmaps; 4590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (!response.isNull()) { 4690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) http_status_code_ = response.httpStatusCode(); 4790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (http_status_code_ == 200) { 4890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Request succeeded, try to convert it to an image. 4990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) bitmaps = webkit_glue::ImageDecoder::DecodeAll( 5090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) reinterpret_cast<const unsigned char*>(data.data()), data.size()); 5190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) } 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } // else case: 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If we get here, it means no image from server or couldn't decode the 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // response as an image. The delegate will see an empty vector. 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Take a reference to the callback as running the callback may lead to our 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // destruction. 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Callback callback = callback_; 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) callback.Run(this, bitmaps); 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 62a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles)} // namespace content 63