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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 CHROME_BROWSER_UI_WINDOW_SIZER_H_ | 5 #ifndef CHROME_BROWSER_UI_WINDOW_SIZER_H_ |
6 #define CHROME_BROWSER_UI_WINDOW_SIZER_H_ | 6 #define CHROME_BROWSER_UI_WINDOW_SIZER_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
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78 | 78 |
79 // An interface implemented by an object that can retrieve state from either a | 79 // An interface implemented by an object that can retrieve state from either a |
80 // persistent store or an existing window. | 80 // persistent store or an existing window. |
81 class StateProvider { | 81 class StateProvider { |
82 public: | 82 public: |
83 virtual ~StateProvider() {} | 83 virtual ~StateProvider() {} |
84 | 84 |
85 // Retrieve the persisted bounds of the window. Returns true if there was | 85 // Retrieve the persisted bounds of the window. Returns true if there was |
86 // persisted data to retrieve state information, false otherwise. | 86 // persisted data to retrieve state information, false otherwise. |
87 virtual bool GetPersistentState(gfx::Rect* bounds, | 87 virtual bool GetPersistentState(gfx::Rect* bounds, |
88 bool* maximized, | |
89 gfx::Rect* work_area) const = 0; | 88 gfx::Rect* work_area) const = 0; |
90 | 89 |
91 // Retrieve the bounds of the most recent window of the matching type. | 90 // Retrieve the bounds of the most recent window of the matching type. |
92 // Returns true if there was a last active window to retrieve state | 91 // Returns true if there was a last active window to retrieve state |
93 // information from, false otherwise. | 92 // information from, false otherwise. |
94 virtual bool GetLastActiveWindowState(gfx::Rect* bounds) const = 0; | 93 virtual bool GetLastActiveWindowState(gfx::Rect* bounds) const = 0; |
95 }; | 94 }; |
96 | 95 |
97 // Determines the position, size and maximized state for a window as it is | 96 // Determines the position and size for a window as it is created. This |
98 // created. This function uses several strategies to figure out optimal size | 97 // function uses several strategies to figure out optimal size and placement, |
99 // and placement, first looking for an existing active window, then falling | 98 // first looking for an existing active window, then falling back to persisted |
100 // back to persisted data from a previous session, finally utilizing a default | 99 // data from a previous session, finally utilizing a default |
101 // algorithm. If |specified_bounds| are non-empty, this value is returned | 100 // algorithm. If |specified_bounds| are non-empty, this value is returned |
102 // instead. For use only in testing. | 101 // instead. For use only in testing. |
103 // | |
104 // NOTE: |maximized| is only set if we're restoring a saved maximized window. | |
105 // When creating a new window based on an existing active window, standard | |
106 // Windows behavior is to have it always be nonmaximized, even if the existing | |
107 // window is maximized. | |
108 void DetermineWindowBounds(const gfx::Rect& specified_bounds, | 102 void DetermineWindowBounds(const gfx::Rect& specified_bounds, |
109 gfx::Rect* bounds, | 103 gfx::Rect* bounds) const; |
110 bool* maximized) const; | |
111 | 104 |
112 // Determines the size, position and maximized state for the browser window. | 105 // Determines the size, position and maximized state for the browser window. |
113 // See documentation for DetermineWindowBounds above. Normally, | 106 // See documentation for DetermineWindowBounds above. Normally, |
114 // |window_bounds| is calculated by calling GetLastActiveWindowState(). To | 107 // |window_bounds| is calculated by calling GetLastActiveWindowState(). To |
115 // explicitly specify a particular window to base the bounds on, pass in a | 108 // explicitly specify a particular window to base the bounds on, pass in a |
116 // non-NULL value for |browser|. | 109 // non-NULL value for |browser|. |
117 static void GetBrowserWindowBounds(const std::string& app_name, | 110 static void GetBrowserWindowBounds(const std::string& app_name, |
118 const gfx::Rect& specified_bounds, | 111 const gfx::Rect& specified_bounds, |
119 const Browser* browser, | 112 const Browser* browser, |
120 gfx::Rect* window_bounds, | 113 gfx::Rect* window_bounds); |
121 bool* maximized); | |
122 | 114 |
123 // Returns the default origin for popups of the given size. | 115 // Returns the default origin for popups of the given size. |
124 static gfx::Point GetDefaultPopupOrigin(const gfx::Size& size); | 116 static gfx::Point GetDefaultPopupOrigin(const gfx::Size& size); |
125 | 117 |
126 // How much horizontal and vertical offset there is between newly | 118 // How much horizontal and vertical offset there is between newly |
127 // opened windows. This value may be different on each platform. | 119 // opened windows. This value may be different on each platform. |
128 static const int kWindowTilePixels; | 120 static const int kWindowTilePixels; |
129 | 121 |
130 private: | 122 private: |
131 // The edge of the screen to check for out-of-bounds. | 123 // The edge of the screen to check for out-of-bounds. |
132 enum Edge { TOP, LEFT, BOTTOM, RIGHT }; | 124 enum Edge { TOP, LEFT, BOTTOM, RIGHT }; |
133 | 125 |
134 // Gets the size and placement of the last window. Returns true if this data | 126 // Gets the size and placement of the last window. Returns true if this data |
135 // is valid, false if there is no last window and the application should | 127 // is valid, false if there is no last window and the application should |
136 // restore saved state from preferences using RestoreWindowPosition. | 128 // restore saved state from preferences using RestoreWindowPosition. |
137 bool GetLastWindowBounds(gfx::Rect* bounds) const; | 129 bool GetLastWindowBounds(gfx::Rect* bounds) const; |
138 | 130 |
139 // Gets the size and placement of the last window in the last session, saved | 131 // Gets the size and placement of the last window in the last session, saved |
140 // in local state preferences. Returns true if local state exists containing | 132 // in local state preferences. Returns true if local state exists containing |
141 // this information, false if this information does not exist and a default | 133 // this information, false if this information does not exist and a default |
142 // size should be used. | 134 // size should be used. |
143 bool GetSavedWindowBounds(gfx::Rect* bounds, bool* maximized) const; | 135 bool GetSavedWindowBounds(gfx::Rect* bounds) const; |
144 | 136 |
145 // Gets the default window position and size if there is no last window and | 137 // Gets the default window position and size if there is no last window and |
146 // no saved window placement in prefs. This function determines the default | 138 // no saved window placement in prefs. This function determines the default |
147 // size based on monitor size, etc. | 139 // size based on monitor size, etc. |
148 void GetDefaultWindowBounds(gfx::Rect* default_bounds) const; | 140 void GetDefaultWindowBounds(gfx::Rect* default_bounds) const; |
149 | 141 |
150 // Returns true if the specified position is "offscreen" for the given edge, | 142 // Returns true if the specified position is "offscreen" for the given edge, |
151 // meaning that it's outside all work areas in the direction of that edge. | 143 // meaning that it's outside all work areas in the direction of that edge. |
152 bool PositionIsOffscreen(int position, Edge edge) const; | 144 bool PositionIsOffscreen(int position, Edge edge) const; |
153 | 145 |
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165 gfx::Rect* bounds) const; | 157 gfx::Rect* bounds) const; |
166 | 158 |
167 // Providers for persistent storage and monitor metrics. | 159 // Providers for persistent storage and monitor metrics. |
168 StateProvider* state_provider_; | 160 StateProvider* state_provider_; |
169 MonitorInfoProvider* monitor_info_provider_; | 161 MonitorInfoProvider* monitor_info_provider_; |
170 | 162 |
171 DISALLOW_COPY_AND_ASSIGN(WindowSizer); | 163 DISALLOW_COPY_AND_ASSIGN(WindowSizer); |
172 }; | 164 }; |
173 | 165 |
174 #endif // CHROME_BROWSER_UI_WINDOW_SIZER_H_ | 166 #endif // CHROME_BROWSER_UI_WINDOW_SIZER_H_ |
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