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
16 using blink::WebFrame;
17 using blink::WebURLRequest;
18 using blink::WebURLResponse;
19
20 namespace content {
21
MultiResolutionImageResourceFetcher(const GURL & image_url,WebFrame * frame,int id,WebURLRequest::RequestContext request_context,const Callback & callback)22 MultiResolutionImageResourceFetcher::MultiResolutionImageResourceFetcher(
23 const GURL& image_url,
24 WebFrame* frame,
25 int id,
26 WebURLRequest::RequestContext request_context,
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,
35 request_context,
36 WebURLRequest::FrameTypeNone,
37 ResourceFetcher::PLATFORM_LOADER,
38 base::Bind(&MultiResolutionImageResourceFetcher::OnURLFetchComplete,
39 base::Unretained(this)));
40 }
41
~MultiResolutionImageResourceFetcher()42 MultiResolutionImageResourceFetcher::~MultiResolutionImageResourceFetcher() {
43 }
44
OnURLFetchComplete(const WebURLResponse & response,const std::string & data)45 void MultiResolutionImageResourceFetcher::OnURLFetchComplete(
46 const WebURLResponse& response,
47 const std::string& data) {
48 std::vector<SkBitmap> bitmaps;
49 if (!response.isNull()) {
50 http_status_code_ = response.httpStatusCode();
51 GURL url(response.url());
52 if (http_status_code_ == 200 || url.SchemeIsFile()) {
53 // Request succeeded, try to convert it to an image.
54 bitmaps = ImageDecoder::DecodeAll(
55 reinterpret_cast<const unsigned char*>(data.data()), data.size());
56 }
57 } // else case:
58 // If we get here, it means no image from server or couldn't decode the
59 // response as an image. The delegate will see an empty vector.
60
61 // Take a reference to the callback as running the callback may lead to our
62 // destruction.
63 Callback callback = callback_;
64 callback.Run(this, bitmaps);
65 }
66
67 } // namespace content
68