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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 #ifndef CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_ | 5 #ifndef CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_ |
6 #define CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_ | 6 #define CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <string> | 9 #include <string> |
10 #include <vector> | 10 #include <vector> |
11 | 11 |
12 #include "base/compiler_specific.h" | 12 #include "base/compiler_specific.h" |
13 #include "base/sequenced_task_runner_helpers.h" | 13 #include "base/sequenced_task_runner_helpers.h" |
14 #include "base/supports_user_data.h" | 14 #include "base/supports_user_data.h" |
15 #include "base/synchronization/lock.h" | 15 #include "base/synchronization/lock.h" |
16 #include "content/public/browser/host_zoom_map.h" | 16 #include "content/public/browser/host_zoom_map.h" |
17 #include "content/public/browser/notification_observer.h" | 17 #include "content/public/browser/notification_observer.h" |
18 #include "content/public/browser/notification_registrar.h" | 18 #include "content/public/browser/notification_registrar.h" |
19 | 19 |
20 namespace content { | 20 namespace content { |
21 | 21 |
22 class WebContentsImpl; | |
23 | |
22 // HostZoomMap needs to be deleted on the UI thread because it listens | 24 // HostZoomMap needs to be deleted on the UI thread because it listens |
23 // to notifications on there (and holds a NotificationRegistrar). | 25 // to notifications on there (and holds a NotificationRegistrar). |
24 class CONTENT_EXPORT HostZoomMapImpl : public NON_EXPORTED_BASE(HostZoomMap), | 26 class CONTENT_EXPORT HostZoomMapImpl : public NON_EXPORTED_BASE(HostZoomMap), |
25 public NotificationObserver, | 27 public NotificationObserver, |
26 public base::SupportsUserData::Data { | 28 public base::SupportsUserData::Data { |
27 public: | 29 public: |
28 HostZoomMapImpl(); | 30 HostZoomMapImpl(); |
29 virtual ~HostZoomMapImpl(); | 31 virtual ~HostZoomMapImpl(); |
30 | 32 |
31 // HostZoomMap implementation: | 33 // HostZoomMap implementation: |
32 virtual void CopyFrom(HostZoomMap* copy) OVERRIDE; | 34 virtual void CopyFrom(HostZoomMap* copy) OVERRIDE; |
33 virtual double GetZoomLevelForHostAndScheme( | 35 virtual double GetZoomLevelForHostAndScheme( |
34 const std::string& scheme, | 36 const std::string& scheme, |
35 const std::string& host) const OVERRIDE; | 37 const std::string& host) const OVERRIDE; |
36 virtual ZoomLevelVector GetAllZoomLevels() const OVERRIDE; | 38 virtual ZoomLevelVector GetAllZoomLevels() const OVERRIDE; |
37 virtual void SetZoomLevelForHost( | 39 virtual void SetZoomLevelForHost( |
38 const std::string& host, | 40 const std::string& host, |
39 double level) OVERRIDE; | 41 double level) OVERRIDE; |
40 virtual void SetZoomLevelForHostAndScheme( | 42 virtual void SetZoomLevelForHostAndScheme( |
41 const std::string& scheme, | 43 const std::string& scheme, |
42 const std::string& host, | 44 const std::string& host, |
43 double level) OVERRIDE; | 45 double level) OVERRIDE; |
44 virtual double GetDefaultZoomLevel() const OVERRIDE; | 46 virtual double GetDefaultZoomLevel() const OVERRIDE; |
45 virtual void SetDefaultZoomLevel(double level) OVERRIDE; | 47 virtual void SetDefaultZoomLevel(double level) OVERRIDE; |
46 virtual scoped_ptr<Subscription> AddZoomLevelChangedCallback( | 48 virtual scoped_ptr<Subscription> AddZoomLevelChangedCallback( |
47 const ZoomLevelChangedCallback& callback) OVERRIDE; | 49 const ZoomLevelChangedCallback& callback) OVERRIDE; |
48 | 50 |
51 // Returns the current zoom level for the specified WebContents. This may | |
52 // be a temporary zoom level, depending on UsesTemporaryZoomLevel(). | |
53 double GetZoomLevelForWebContents( | |
54 const WebContentsImpl& web_contents_impl) const; | |
55 | |
56 // Sets the zoom level for this WebContents. If this WebContents is using | |
57 // a temporary zoom level, then level is only applied to this WebContents. | |
58 // Otherwise, the level will be applied on a host level. | |
59 void SetZoomLevelForWebContents(const WebContentsImpl& web_contents_impl, | |
60 double level); | |
61 | |
62 // Sets the zoom level for the specified view. The level may be set for only | |
63 // this view, or for the host, depending on UsesTemporaryZoomLevel(). | |
64 void SetZoomLevelForView(int render_process_id, | |
65 int render_view_id, | |
66 double level, | |
67 const std::string& host); | |
68 | |
69 // Returns whether the view manages its zoom level independently of other tabs | |
70 // displaying content from the same host. | |
71 bool UsesTemporaryZoomLevel(int render_process_id, int render_view_id) const; | |
72 | |
73 // Sets whether the view manages its zoom level independently of other tabs | |
74 // displaying content from the same host, based on whether | |
75 // |uses_temporary_zoom_level| is true. | |
76 void SetUsesTemporaryZoomLevel(int render_process_id, | |
77 int render_view_id, | |
78 bool uses_temporary_zoom_level); | |
79 | |
49 // Returns the temporary zoom level that's only valid for the lifetime of | 80 // Returns the temporary zoom level that's only valid for the lifetime of |
50 // the given WebContents (i.e. isn't saved and doesn't affect other | 81 // the given WebContents (i.e. isn't saved and doesn't affect other |
51 // WebContentses) if it exists, the default zoom level otherwise. | 82 // WebContentses) if it exists, the default zoom level otherwise. |
52 // | 83 // |
53 // This may be called on any thread. | 84 // This may be called on any thread. |
54 double GetTemporaryZoomLevel(int render_process_id, | 85 double GetTemporaryZoomLevel(int render_process_id, |
55 int render_view_id) const; | 86 int render_view_id) const; |
56 | 87 |
57 // Sets the temporary zoom level that's only valid for the lifetime of this | 88 // Sets the temporary zoom level that's only valid for the lifetime of this |
58 // WebContents. | 89 // WebContents. |
(...skipping 17 matching lines...) Expand all Loading... | |
76 // Callbacks called when zoom level changes. | 107 // Callbacks called when zoom level changes. |
77 base::CallbackList<void(const ZoomLevelChange&)> | 108 base::CallbackList<void(const ZoomLevelChange&)> |
78 zoom_level_changed_callbacks_; | 109 zoom_level_changed_callbacks_; |
79 | 110 |
80 // Copy of the pref data, so that we can read it on the IO thread. | 111 // Copy of the pref data, so that we can read it on the IO thread. |
81 HostZoomLevels host_zoom_levels_; | 112 HostZoomLevels host_zoom_levels_; |
82 SchemeHostZoomLevels scheme_host_zoom_levels_; | 113 SchemeHostZoomLevels scheme_host_zoom_levels_; |
83 double default_zoom_level_; | 114 double default_zoom_level_; |
84 | 115 |
85 struct TemporaryZoomLevel { | 116 struct TemporaryZoomLevel { |
117 TemporaryZoomLevel(int process_id, int view_id, double level); | |
118 TemporaryZoomLevel(int process_id, int view_id); | |
119 bool operator==(const TemporaryZoomLevel& other) const; | |
120 | |
86 int render_process_id; | 121 int render_process_id; |
87 int render_view_id; | 122 int render_view_id; |
88 double zoom_level; | 123 double zoom_level; |
89 }; | 124 }; |
90 | 125 |
91 // Don't expect more than a couple of tabs that are using a temporary zoom | 126 // Don't expect more than a couple of tabs that are using a temporary zoom |
92 // level, so vector is fine for now. | 127 // level, so vector is fine for now. |
93 std::vector<TemporaryZoomLevel> temporary_zoom_levels_; | 128 typedef std::vector<TemporaryZoomLevel> TemporaryZoomLevels; |
Peter Kasting
2014/05/29 18:16:08
Nit: Style guide says typedefs and enums go at the
wjmaclean
2014/05/29 20:14:19
Done.
| |
129 TemporaryZoomLevels temporary_zoom_levels_; | |
94 | 130 |
95 // Used around accesses to |host_zoom_levels_|, |default_zoom_level_| and | 131 // Used around accesses to |host_zoom_levels_|, |default_zoom_level_| and |
96 // |temporary_zoom_levels_| to guarantee thread safety. | 132 // |temporary_zoom_levels_| to guarantee thread safety. |
97 mutable base::Lock lock_; | 133 mutable base::Lock lock_; |
98 | 134 |
99 NotificationRegistrar registrar_; | 135 NotificationRegistrar registrar_; |
100 | 136 |
101 DISALLOW_COPY_AND_ASSIGN(HostZoomMapImpl); | 137 DISALLOW_COPY_AND_ASSIGN(HostZoomMapImpl); |
102 }; | 138 }; |
103 | 139 |
104 } // namespace content | 140 } // namespace content |
105 | 141 |
106 #endif // CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_ | 142 #endif // CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_ |
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