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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 "chrome/browser/profiles/profile.h" | 7 #include "chrome/browser/profiles/profile.h" |
8 #include "chrome/browser/ui/browser_finder.h" | 8 #include "chrome/browser/ui/browser_finder.h" |
9 #include "chrome/browser/ui/tab_contents/tab_contents.h" | 9 #include "chrome/browser/ui/tab_contents/tab_contents.h" |
10 #include "chrome/common/chrome_notification_types.h" | 10 #include "chrome/common/chrome_notification_types.h" |
11 #include "chrome/common/pref_names.h" | 11 #include "chrome/common/pref_names.h" |
12 #include "content/public/browser/notification_types.h" | 12 #include "content/public/browser/notification_types.h" |
13 #include "content/public/browser/notification_details.h" | 13 #include "content/public/browser/notification_details.h" |
14 #include "content/public/browser/notification_service.h" | 14 #include "content/public/browser/notification_service.h" |
15 #include "content/public/browser/web_contents.h" | 15 #include "content/public/browser/web_contents.h" |
16 #include "content/public/common/page_zoom.h" | 16 #include "content/public/common/page_zoom.h" |
| 17 #include "grit/theme_resources.h" |
17 | 18 |
18 ZoomController::ZoomController(TabContents* tab_contents) | 19 ZoomController::ZoomController(TabContents* tab_contents) |
19 : content::WebContentsObserver(tab_contents->web_contents()), | 20 : content::WebContentsObserver(tab_contents->web_contents()), |
20 zoom_icon_state_(NONE), | |
21 zoom_percent_(100), | 21 zoom_percent_(100), |
22 tab_contents_(tab_contents), | 22 tab_contents_(tab_contents), |
23 observer_(NULL) { | 23 observer_(NULL) { |
24 default_zoom_level_.Init(prefs::kDefaultZoomLevel, | 24 default_zoom_level_.Init(prefs::kDefaultZoomLevel, |
25 tab_contents->profile()->GetPrefs(), this); | 25 tab_contents->profile()->GetPrefs(), this); |
26 registrar_.Add(this, content::NOTIFICATION_ZOOM_LEVEL_CHANGED, | 26 registrar_.Add(this, content::NOTIFICATION_ZOOM_LEVEL_CHANGED, |
27 content::NotificationService::AllBrowserContextsAndSources()); | 27 content::NotificationService::AllBrowserContextsAndSources()); |
28 | 28 |
29 UpdateState(false); | 29 UpdateState(false); |
30 } | 30 } |
31 | 31 |
32 ZoomController::~ZoomController() { | 32 ZoomController::~ZoomController() { |
33 default_zoom_level_.Destroy(); | 33 default_zoom_level_.Destroy(); |
34 registrar_.RemoveAll(); | 34 registrar_.RemoveAll(); |
35 } | 35 } |
36 | 36 |
| 37 bool ZoomController::IsAtDefaultZoom() const { |
| 38 return content::ZoomValuesEqual(tab_contents_->web_contents()->GetZoomLevel(), |
| 39 default_zoom_level_.GetValue()); |
| 40 } |
| 41 |
| 42 int ZoomController::GetResourceForZoomLevel() const { |
| 43 DCHECK(!IsAtDefaultZoom()); |
| 44 double zoom = tab_contents_->web_contents()->GetZoomLevel(); |
| 45 return zoom > default_zoom_level_.GetValue() ? IDR_ZOOM_PLUS : IDR_ZOOM_MINUS; |
| 46 } |
| 47 |
37 void ZoomController::DidNavigateMainFrame( | 48 void ZoomController::DidNavigateMainFrame( |
38 const content::LoadCommittedDetails& details, | 49 const content::LoadCommittedDetails& details, |
39 const content::FrameNavigateParams& params) { | 50 const content::FrameNavigateParams& params) { |
40 // If the main frame's content has changed, the new page may have a different | 51 // If the main frame's content has changed, the new page may have a different |
41 // zoom level from the old one. | 52 // zoom level from the old one. |
42 UpdateState(false); | 53 UpdateState(false); |
43 } | 54 } |
44 | 55 |
45 void ZoomController::Observe(int type, | 56 void ZoomController::Observe(int type, |
46 const content::NotificationSource& source, | 57 const content::NotificationSource& source, |
47 const content::NotificationDetails& details) { | 58 const content::NotificationDetails& details) { |
48 switch (type) { | 59 switch (type) { |
49 case chrome::NOTIFICATION_PREF_CHANGED: { | 60 case chrome::NOTIFICATION_PREF_CHANGED: { |
50 std::string* pref_name = content::Details<std::string>(details).ptr(); | 61 std::string* pref_name = content::Details<std::string>(details).ptr(); |
51 DCHECK(pref_name && *pref_name == prefs::kDefaultZoomLevel); | 62 DCHECK(pref_name && *pref_name == prefs::kDefaultZoomLevel); |
52 UpdateState(false); | 63 UpdateState(false); |
53 break; | 64 break; |
54 } | 65 } |
55 case content::NOTIFICATION_ZOOM_LEVEL_CHANGED: | 66 case content::NOTIFICATION_ZOOM_LEVEL_CHANGED: |
56 UpdateState(!content::Details<std::string>(details)->empty()); | 67 UpdateState(!content::Details<std::string>(details)->empty()); |
57 break; | 68 break; |
58 default: | 69 default: |
59 NOTREACHED(); | 70 NOTREACHED(); |
60 } | 71 } |
61 } | 72 } |
62 | 73 |
63 void ZoomController::UpdateState(bool can_show_bubble) { | 74 void ZoomController::UpdateState(bool can_show_bubble) { |
64 double current_zoom_level = tab_contents_->web_contents()->GetZoomLevel(); | 75 bool dummy; |
65 double default_zoom_level = default_zoom_level_.GetValue(); | 76 zoom_percent_ = tab_contents_->web_contents()->GetZoomPercent(&dummy, &dummy); |
66 | 77 |
67 ZoomIconState state; | 78 if (observer_) |
68 if (content::ZoomValuesEqual(current_zoom_level, default_zoom_level)) | 79 observer_->OnZoomChanged(tab_contents_, can_show_bubble); |
69 state = NONE; | |
70 else if (current_zoom_level > default_zoom_level) | |
71 state = ZOOM_PLUS_ICON; | |
72 else | |
73 state = ZOOM_MINUS_ICON; | |
74 | |
75 bool dummy; | |
76 int zoom_percent = tab_contents_->web_contents()-> | |
77 GetZoomPercent(&dummy, &dummy); | |
78 | |
79 if (state != zoom_icon_state_) { | |
80 zoom_icon_state_ = state; | |
81 if (observer_) | |
82 observer_->OnZoomIconChanged(tab_contents_, state); | |
83 } | |
84 | |
85 if (zoom_percent != zoom_percent_) { | |
86 zoom_percent_ = zoom_percent; | |
87 if (observer_) | |
88 observer_->OnZoomChanged(tab_contents_, | |
89 zoom_percent, | |
90 can_show_bubble && state != NONE); | |
91 } | |
92 } | 80 } |
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