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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/browser/ui/zoom/zoom_controller.h" | 5 #include "chrome/browser/ui/zoom/zoom_controller.h" |
6 | 6 |
7 #include "base/prefs/pref_service.h" | 7 #include "base/prefs/pref_service.h" |
8 #include "chrome/browser/chrome_notification_types.h" | 8 #include "chrome/browser/chrome_notification_types.h" |
9 #include "chrome/browser/profiles/profile.h" | 9 #include "chrome/browser/profiles/profile.h" |
10 #include "chrome/browser/ui/browser_finder.h" | 10 #include "chrome/browser/ui/browser_finder.h" |
11 #include "chrome/common/pref_names.h" | 11 #include "chrome/common/pref_names.h" |
12 #include "content/public/browser/host_zoom_map.h" | 12 #include "content/public/browser/host_zoom_map.h" |
13 #include "content/public/browser/navigation_entry.h" | 13 #include "content/public/browser/navigation_entry.h" |
14 #include "content/public/browser/notification_details.h" | 14 #include "content/public/browser/notification_details.h" |
15 #include "content/public/browser/notification_service.h" | 15 #include "content/public/browser/notification_service.h" |
16 #include "content/public/browser/notification_types.h" | 16 #include "content/public/browser/notification_types.h" |
17 #include "content/public/browser/render_process_host.h" | |
18 #include "content/public/browser/render_view_host.h" | |
17 #include "content/public/browser/web_contents.h" | 19 #include "content/public/browser/web_contents.h" |
18 #include "content/public/common/page_zoom.h" | 20 #include "content/public/common/page_zoom.h" |
19 #include "grit/theme_resources.h" | 21 #include "grit/theme_resources.h" |
20 #include "net/base/net_util.h" | 22 #include "net/base/net_util.h" |
21 | 23 |
22 DEFINE_WEB_CONTENTS_USER_DATA_KEY(ZoomController); | 24 DEFINE_WEB_CONTENTS_USER_DATA_KEY(ZoomController); |
23 | 25 |
24 ZoomController::ZoomController(content::WebContents* web_contents) | 26 ZoomController::ZoomController(content::WebContents* web_contents) |
25 : content::WebContentsObserver(web_contents), | 27 : content::WebContentsObserver(web_contents), |
26 zoom_percent_(100), | 28 zoom_mode_(kZoomModeDefault), |
27 observer_(NULL), | 29 observer_(NULL), |
28 browser_context_(web_contents->GetBrowserContext()) { | 30 browser_context_(web_contents->GetBrowserContext()) { |
29 Profile* profile = | 31 Profile* profile = |
30 Profile::FromBrowserContext(web_contents->GetBrowserContext()); | 32 Profile::FromBrowserContext(web_contents->GetBrowserContext()); |
31 default_zoom_level_.Init(prefs::kDefaultZoomLevel, profile->GetPrefs(), | 33 default_zoom_level_.Init( |
32 base::Bind(&ZoomController::UpdateState, | 34 prefs::kDefaultZoomLevel, profile->GetPrefs(), |
33 base::Unretained(this), | 35 base::Bind(static_cast<void(ZoomController::*)( |
34 std::string())); | 36 const std::string&)>(&ZoomController::UpdateState), |
Fady Samuel
2014/06/12 19:38:58
Funky cast. Is this necessary?
wjmaclean
2014/06/12 19:45:25
Not sure ... I inherited this chuck of code and ha
| |
37 base::Unretained(this), | |
38 std::string())); | |
39 zoom_level_ = default_zoom_level_.GetValue(); | |
35 | 40 |
36 zoom_subscription_ = content::HostZoomMap::GetForBrowserContext( | 41 zoom_subscription_ = content::HostZoomMap::GetForBrowserContext( |
37 browser_context_)->AddZoomLevelChangedCallback( | 42 browser_context_)->AddZoomLevelChangedCallback( |
38 base::Bind(&ZoomController::OnZoomLevelChanged, | 43 base::Bind(&ZoomController::OnZoomLevelChanged, |
39 base::Unretained(this))); | 44 base::Unretained(this))); |
40 | 45 |
41 UpdateState(std::string()); | 46 UpdateState(std::string()); |
42 } | 47 } |
43 | 48 |
44 ZoomController::~ZoomController() {} | 49 ZoomController::~ZoomController() {} |
45 | 50 |
46 bool ZoomController::IsAtDefaultZoom() const { | 51 bool ZoomController::IsAtDefaultZoom() const { |
47 return content::ZoomValuesEqual( | 52 return content::ZoomValuesEqual(GetZoomLevel(), |
48 content::HostZoomMap::GetZoomLevel(web_contents()), | 53 default_zoom_level_.GetValue()); |
49 default_zoom_level_.GetValue()); | |
50 } | 54 } |
51 | 55 |
52 int ZoomController::GetResourceForZoomLevel() const { | 56 int ZoomController::GetResourceForZoomLevel() const { |
53 if (IsAtDefaultZoom()) | 57 if (IsAtDefaultZoom()) |
54 return IDR_ZOOM_NORMAL; | 58 return IDR_ZOOM_NORMAL; |
55 double zoom = content::HostZoomMap::GetZoomLevel(web_contents()); | 59 double zoom = GetZoomLevel(); |
56 return zoom > default_zoom_level_.GetValue() ? IDR_ZOOM_PLUS : IDR_ZOOM_MINUS; | 60 return zoom > default_zoom_level_.GetValue() ? IDR_ZOOM_PLUS : IDR_ZOOM_MINUS; |
57 } | 61 } |
58 | 62 |
63 const extensions::Extension* ZoomController::last_extension() const { | |
64 return last_extension_.get(); | |
65 } | |
66 | |
67 double ZoomController::GetZoomLevel() const { | |
68 if (zoom_mode_ == kZoomModeManual) | |
69 return zoom_level_; | |
70 else | |
71 return content::HostZoomMap::GetZoomLevel(web_contents()); | |
72 } | |
73 | |
74 int ZoomController::GetZoomPercent() const { | |
75 double zoom_factor = content::ZoomLevelToZoomFactor(GetZoomLevel()); | |
76 return static_cast<int>(zoom_factor * 100 + 0.5); | |
77 } | |
78 | |
79 bool ZoomController::SetZoomLevel(double zoom_level) { | |
80 scoped_refptr<const extensions::Extension> null_extension_pointer; | |
81 // An extension did not initiate this zoom change. | |
82 return SetZoomLevelByExtension(zoom_level, null_extension_pointer); | |
83 } | |
84 | |
85 bool ZoomController::SetZoomLevelByExtension( | |
86 double zoom_level, | |
87 scoped_refptr<const extensions::Extension> extension) { | |
88 // Cannot zoom in disabled mode. | |
89 if (zoom_mode_ == kZoomModeDisabled) | |
90 return false; | |
91 | |
92 if (zoom_mode_ == kZoomModeManual) { | |
93 double old_zoom_level = zoom_level_; | |
94 zoom_level_ = zoom_level; | |
95 | |
96 observer_->OnZoomChangeInitiated( | |
97 web_contents(), old_zoom_level, zoom_level, zoom_mode_); | |
98 | |
99 return true; | |
100 } | |
101 | |
102 // Store extension data so that |extension| can be attributed when the zoom | |
103 // change completes.. | |
104 extensions_.push(extension.get()); | |
105 | |
106 // Do not actually rescale the page in manual mode. | |
107 content::HostZoomMap* zoom_map = content::HostZoomMap::GetForBrowserContext( | |
108 web_contents()->GetBrowserContext()); | |
109 DCHECK(zoom_map); | |
110 content::NavigationEntry* entry = | |
111 web_contents()->GetController().GetLastCommittedEntry(); | |
112 std::string host = | |
Fady Samuel
2014/06/12 19:38:58
Move this to the else clause?
wjmaclean
2014/06/12 19:45:25
Done.
| |
113 net::GetHostOrSpecFromURL(entry ? entry->GetURL() : GURL::EmptyGURL()); | |
114 double old_zoom_level = GetZoomLevel(); | |
115 int render_process_id = web_contents()->GetRenderProcessHost()->GetID(); | |
116 int render_view_id = web_contents()->GetRenderViewHost()->GetRoutingID(); | |
117 if (zoom_mode_ == kZoomModeIsolated || | |
118 zoom_map->UsesTemporaryZoomLevel(render_process_id, render_view_id)) { | |
119 zoom_map->SetTemporaryZoomLevel( | |
120 render_process_id, render_view_id, zoom_level); | |
121 } else { | |
122 zoom_map->SetZoomLevelForHost(host, zoom_level); | |
123 } | |
124 observer_->OnZoomChangeInitiated( | |
125 web_contents(), old_zoom_level, zoom_level, zoom_mode_); | |
126 | |
127 return true; | |
128 } | |
129 | |
130 void ZoomController::SetZoomMode(ZoomMode new_mode) { | |
131 if (new_mode == zoom_mode_) | |
132 return; | |
133 | |
134 content::HostZoomMap* zoom_map = content::HostZoomMap::GetForBrowserContext( | |
135 web_contents()->GetBrowserContext()); | |
136 DCHECK(zoom_map); | |
137 int render_process_id = web_contents()->GetRenderProcessHost()->GetID(); | |
138 int render_view_id = web_contents()->GetRenderViewHost()->GetRoutingID(); | |
139 content::NavigationEntry* entry = | |
140 web_contents()->GetController().GetLastCommittedEntry(); | |
141 GURL url; | |
142 if (entry) | |
143 url = entry->GetURL(); | |
144 std::string host = net::GetHostOrSpecFromURL(url); | |
Fady Samuel
2014/06/12 19:38:58
Move this and its dependencies to the case kZoomMo
wjmaclean
2014/06/12 19:45:25
Done.
| |
145 double original_zoom_level = GetZoomLevel(); | |
146 | |
147 switch (new_mode) { | |
148 case kZoomModeDefault: { | |
149 if (zoom_map->HasZoomLevel(url.scheme(), host)) { | |
150 // All the other modes are per-tab, but setting this mode shouldn't | |
151 // affect the zoom level of other tabs; if there are other tabs with | |
152 // the same origin, then set this tab's zoom level to match theirs. | |
153 // TODO(wjmaclean) How to convert this call? | |
154 double origin_zoom_level = | |
155 zoom_map->GetZoomLevelForHostAndScheme(url.scheme(), host); | |
156 zoom_map->SetTemporaryZoomLevel( | |
157 render_process_id, render_view_id, origin_zoom_level); | |
158 } else { | |
159 // The host will need a level prior to removing the temporary level. | |
160 zoom_map->SetZoomLevelForHost(host, original_zoom_level); | |
161 } | |
162 // Remove per-tab zoom data for this tab. | |
163 zoom_map->ClearTemporaryZoomLevel(render_process_id, render_view_id); | |
164 break; | |
165 } | |
166 case kZoomModeIsolated: { | |
167 // Unless the zoom mode was |kZoomModeDisabled| before this call, the page | |
168 // needs an initial isolated zoom back to the same level it was at in the | |
169 // other mode. | |
170 if (zoom_mode_ != kZoomModeDisabled) { | |
171 zoom_map->SetTemporaryZoomLevel( | |
172 render_process_id, render_view_id, original_zoom_level); | |
173 } | |
174 break; | |
175 } | |
176 case kZoomModeManual: { | |
177 // Unless the zoom mode was |kZoomModeDisabled| before this call, the page | |
178 // needs to be resized to the default zoom before calling SetZoomLevel() | |
179 // so that the page can be resized manually to the same zoom as before. | |
180 if (zoom_mode_ != kZoomModeDisabled) { | |
181 zoom_map->SetTemporaryZoomLevel(render_process_id, render_view_id, 0); | |
182 zoom_mode_ = new_mode; | |
183 zoom_level_ = original_zoom_level; | |
184 } | |
185 break; | |
186 } | |
187 case kZoomModeDisabled: { | |
188 // The page needs to be zoomed back to default before disabling the zoom | |
189 zoom_map->SetTemporaryZoomLevel(render_process_id, render_view_id, 0); | |
190 break; | |
191 } | |
192 } | |
193 | |
194 zoom_mode_ = new_mode; | |
195 } | |
196 | |
59 void ZoomController::DidNavigateMainFrame( | 197 void ZoomController::DidNavigateMainFrame( |
60 const content::LoadCommittedDetails& details, | 198 const content::LoadCommittedDetails& details, |
61 const content::FrameNavigateParams& params) { | 199 const content::FrameNavigateParams& params) { |
62 // If the main frame's content has changed, the new page may have a different | 200 // If the main frame's content has changed, the new page may have a different |
63 // zoom level from the old one. | 201 // zoom level from the old one. |
64 UpdateState(std::string()); | 202 UpdateState(std::string()); |
65 } | 203 } |
66 | 204 |
67 void ZoomController::OnZoomLevelChanged( | 205 void ZoomController::OnZoomLevelChanged( |
68 const content::HostZoomMap::ZoomLevelChange& change) { | 206 const content::HostZoomMap::ZoomLevelChange& change) { |
69 UpdateState(change.host); | 207 UpdateState(change.host, |
208 change.mode == content::HostZoomMap::ZOOM_CHANGED_TEMPORARY_ZOOM); | |
70 } | 209 } |
71 | 210 |
72 void ZoomController::UpdateState(const std::string& host) { | 211 void ZoomController::UpdateState(const std::string& host) { |
212 UpdateState(host, false); | |
213 } | |
214 | |
215 void ZoomController::UpdateState(const std::string& host, | |
216 bool is_temporary_zoom) { | |
217 // Update |last_extension_|. | |
218 if (!extensions_.empty()) { | |
219 last_extension_ = extensions_.front().get(); | |
220 extensions_.pop(); | |
221 } | |
222 | |
73 // If |host| is empty, all observers should be updated. | 223 // If |host| is empty, all observers should be updated. |
74 if (!host.empty()) { | 224 if (!host.empty()) { |
75 // Use the navigation entry's URL instead of the WebContents' so virtual | 225 // Use the navigation entry's URL instead of the WebContents' so virtual |
76 // URLs work (e.g. chrome://settings). http://crbug.com/153950 | 226 // URLs work (e.g. chrome://settings). http://crbug.com/153950 |
77 content::NavigationEntry* entry = | 227 content::NavigationEntry* entry = |
78 web_contents()->GetController().GetLastCommittedEntry(); | 228 web_contents()->GetController().GetLastCommittedEntry(); |
79 if (!entry || | 229 if (!entry || |
80 host != net::GetHostOrSpecFromURL(entry->GetURL())) { | 230 host != net::GetHostOrSpecFromURL(entry->GetURL())) { |
81 return; | 231 return; |
82 } | 232 } |
83 } | 233 } |
84 | 234 |
85 bool dummy; | 235 if (observer_) { |
86 zoom_percent_ = web_contents()->GetZoomPercent(&dummy, &dummy); | 236 // The zoom bubble can be shown for all normal, per-origin zoom changes |
237 // (where the host will not be empty and the zoom is not temporary), or any | |
238 // special zoom changes (where the zoom mode will not be "default"). | |
239 bool can_show_bubble = | |
240 zoom_mode_ != kZoomModeDefault || | |
241 (!host.empty() && !is_temporary_zoom); | |
242 observer_->OnZoomChanged(web_contents(), can_show_bubble); | |
243 } | |
87 | 244 |
88 if (observer_) | 245 last_extension_ = NULL; |
89 observer_->OnZoomChanged(web_contents(), !host.empty()); | |
90 } | 246 } |
247 | |
248 void ZoomController::ZoomCallback( | |
249 scoped_refptr<const extensions::Extension> extension, | |
250 const base::Callback<void(void)>& callback) { | |
251 extensions_.push(extension); | |
252 callback.Run(); | |
253 } | |
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