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Side by Side Diff: chrome/renderer/favicon_helper.cc

Issue 11232068: Extract renderer-side favicon downloading code into separate helper class (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 8 years, 1 month ago
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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 "chrome/renderer/favicon_helper.h"
6
7 #include "base/bind.h"
8 #include "base/message_loop.h"
9 #include "chrome/common/chrome_constants.h"
10 #include "chrome/common/favicon_url.h"
11 #include "chrome/common/icon_messages.h"
12 #include "content/public/renderer/render_view.h"
13 #include "net/base/data_url.h"
14 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
15 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
16 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebURLReques t.h"
17 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
18 #include "ui/gfx/favicon_size.h"
19 #include "ui/gfx/size.h"
20 #include "ui/gfx/skbitmap_operations.h"
21 #include "webkit/glue/image_decoder.h"
22 #include "webkit/glue/multi_resolution_image_resource_fetcher.h"
23 #include "webkit/glue/webkit_glue.h"
24
25 using WebKit::WebFrame;
26 using WebKit::WebIconURL;
27 using WebKit::WebVector;
28 using WebKit::WebURL;
29 using WebKit::WebURLRequest;
30 using webkit_glue::MultiResolutionImageResourceFetcher;
31
32 static FaviconURL::IconType ToFaviconType(WebIconURL::Type type) {
33 switch (type) {
34 case WebIconURL::TypeFavicon:
35 return FaviconURL::FAVICON;
36 case WebIconURL::TypeTouch:
37 return FaviconURL::TOUCH_ICON;
38 case WebIconURL::TypeTouchPrecomposed:
39 return FaviconURL::TOUCH_PRECOMPOSED_ICON;
40 case WebIconURL::TypeInvalid:
41 return FaviconURL::INVALID_ICON;
42 }
43 return FaviconURL::INVALID_ICON;
44 }
45
46 FaviconHelper::FaviconHelper(content::RenderView* render_view)
47 : content::RenderViewObserver(render_view) {
48 }
49
50 FaviconHelper::~FaviconHelper() {
sky 2012/11/15 01:22:17 Position should match header (many of the methods
Cait (Slow) 2012/11/15 16:25:26 Done.
51 }
52
53 void FaviconHelper::SendUpdateFaviconURL(int32 routing_id,
54 int32 page_id,
55 const std::vector<FaviconURL>& urls) {
56 if (!urls.empty()) {
sky 2012/11/15 01:22:17 nit: no {}
Cait (Slow) 2012/11/15 16:25:26 Done.
57 Send(new IconHostMsg_UpdateFaviconURL(routing_id, page_id, urls));
58 }
59 }
60
61 bool FaviconHelper::OnMessageReceived(const IPC::Message& message) {
62 bool handled = true;
63 IPC_BEGIN_MESSAGE_MAP(FaviconHelper, message)
64 IPC_MESSAGE_HANDLER(IconMsg_DownloadFavicon, OnDownloadFavicon)
65 IPC_MESSAGE_UNHANDLED(handled = false)
66 IPC_END_MESSAGE_MAP()
67
68 return handled;
69 }
70
71 void FaviconHelper::OnDownloadFavicon(int id,
72 const GURL& image_url,
73 int image_size) {
74 std::vector<SkBitmap> result_images;
75 if (image_url.SchemeIs("data")) {
76 SkBitmap data_image = ImageFromDataUrl(image_url);
77 if (!data_image.empty())
78 result_images.push_back(data_image);
79 } else {
80 if (DownloadFavicon(id, image_url, image_size)) {
81 // Will complete asynchronously via FaviconHelper::DidDownloadFavicon
82 return;
83 }
84 }
85
86 Send(new IconHostMsg_DidDownloadFavicon(
87 routing_id(), id, image_url, true, image_size, result_images));
88 }
89
90 bool FaviconHelper::DownloadFavicon(int id,
91 const GURL& image_url,
92 int image_size) {
93 // Make sure webview was not shut down.
94 if (!render_view()->GetWebView())
95 return false;
96 // Create an image resource fetcher and assign it with a call back object.
97 image_fetchers_.push_back(new MultiResolutionImageResourceFetcher(
98 image_url, render_view()->GetWebView()->mainFrame(), id,
99 WebURLRequest::TargetIsFavicon,
100 base::Bind(&FaviconHelper::DidDownloadFavicon,
101 base::Unretained(this), image_size)));
102 return true;
103 }
104
105 void FaviconHelper::DidDownloadFavicon(
106 int requested_size,
107 MultiResolutionImageResourceFetcher* fetcher,
108 const std::vector<SkBitmap>& images) {
109 // Notify requester of image download status.
110 Send(new IconHostMsg_DidDownloadFavicon(routing_id(),
111 fetcher->id(),
112 fetcher->image_url(),
113 images.empty(),
114 requested_size,
115 images));
116
117 // Remove the image fetcher from our pending list. We're in the callback from
118 // MultiResolutionImageResourceFetcher, best to delay deletion.
119 ImageResourceFetcherList::iterator iter =
120 std::find(image_fetchers_.begin(), image_fetchers_.end(), fetcher);
121 if (iter != image_fetchers_.end()) {
122 image_fetchers_.weak_erase(iter);
123 MessageLoop::current()->DeleteSoon(FROM_HERE, fetcher);
124 }
125 }
126
127 void FaviconHelper::DidStopLoading() {
128 int icon_types = WebIconURL::TypeFavicon;
129 if (chrome::kEnableTouchIcon)
130 icon_types |= WebIconURL::TypeTouchPrecomposed | WebIconURL::TypeTouch;
131
132 WebVector<WebIconURL> icon_urls =
133 render_view()->GetWebView()->mainFrame()->iconURLs(icon_types);
134 std::vector<FaviconURL> urls;
135 for (size_t i = 0; i < icon_urls.size(); i++) {
136 WebURL url = icon_urls[i].iconURL();
137 if (!url.isEmpty())
138 urls.push_back(FaviconURL(url, ToFaviconType(icon_urls[i].iconType())));
139 }
140 SendUpdateFaviconURL(routing_id(), render_view()->GetPageId(), urls);
141 }
142
143 void FaviconHelper::DidChangeIcon(WebKit::WebFrame* frame,
144 WebKit::WebIconURL::Type icon_type) {
145 if (frame->parent())
146 return;
147
148 if (!chrome::kEnableTouchIcon &&
149 icon_type != WebIconURL::TypeFavicon)
150 return;
151
152 WebVector<WebIconURL> icon_urls = frame->iconURLs(icon_type);
153 std::vector<FaviconURL> urls;
154 for (size_t i = 0; i < icon_urls.size(); i++) {
155 urls.push_back(FaviconURL(icon_urls[i].iconURL(),
156 ToFaviconType(icon_urls[i].iconType())));
157 }
158 SendUpdateFaviconURL(routing_id(), render_view()->GetPageId(), urls);
159 }
160
161 SkBitmap FaviconHelper::ImageFromDataUrl(const GURL& url) const {
162 std::string mime_type, char_set, data;
163 if (net::DataURL::Parse(url, &mime_type, &char_set, &data) && !data.empty()) {
164 // Decode the favicon using WebKit's image decoder.
165 webkit_glue::ImageDecoder decoder(
166 gfx::Size(gfx::kFaviconSize, gfx::kFaviconSize));
167 const unsigned char* src_data =
168 reinterpret_cast<const unsigned char*>(&data[0]);
169
170 return decoder.Decode(src_data, data.size());
171 }
172 return SkBitmap();
173 }
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