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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 #ifndef ASH_WALLPAPER_WALLPAPER_CONTROLLER_H_ | |
| 6 #define ASH_WALLPAPER_WALLPAPER_CONTROLLER_H_ | |
| 7 | |
| 8 #include <memory> | |
| 9 | |
| 10 #include "ash/ash_export.h" | |
| 11 #include "ash/common/shell_observer.h" | |
| 12 #include "ash/common/wm_display_observer.h" | |
| 13 #include "base/observer_list.h" | |
| 14 #include "base/timer/timer.h" | |
| 15 #include "components/wallpaper/wallpaper_layout.h" | |
| 16 #include "ui/gfx/image/image_skia.h" | |
| 17 | |
| 18 namespace base { | |
| 19 class SequencedWorkerPool; | |
| 20 } | |
| 21 | |
| 22 namespace wallpaper { | |
| 23 class WallpaperResizer; | |
| 24 } | |
| 25 | |
| 26 namespace ash { | |
| 27 | |
| 28 class WallpaperControllerObserver; | |
| 29 | |
| 30 // Controls the desktop background wallpaper. | |
| 31 class ASH_EXPORT WallpaperController : public WmDisplayObserver, | |
| 32 public ShellObserver { | |
| 33 public: | |
| 34 enum WallpaperMode { WALLPAPER_NONE, WALLPAPER_IMAGE }; | |
| 35 | |
| 36 explicit WallpaperController(base::SequencedWorkerPool* blocking_pool); | |
| 37 ~WallpaperController() override; | |
| 38 | |
| 39 // Add/Remove observers. | |
| 40 void AddObserver(WallpaperControllerObserver* observer); | |
| 41 void RemoveObserver(WallpaperControllerObserver* observer); | |
| 42 | |
| 43 // Provides current image on the wallpaper, or empty gfx::ImageSkia if there | |
| 44 // is no image, e.g. wallpaper is none. | |
| 45 gfx::ImageSkia GetWallpaper() const; | |
| 46 | |
| 47 wallpaper::WallpaperLayout GetWallpaperLayout() const; | |
| 48 | |
| 49 // Sets wallpaper. This is mostly called by WallpaperManager to set | |
| 50 // the default or user selected custom wallpaper. | |
| 51 // Returns true if new image was actually set. And false when duplicate set | |
| 52 // request detected. | |
| 53 bool SetWallpaperImage(const gfx::ImageSkia& image, | |
| 54 wallpaper::WallpaperLayout layout); | |
| 55 | |
| 56 // Creates an empty wallpaper. Some tests require a wallpaper widget is ready | |
| 57 // when running. However, the wallpaper widgets are now created | |
| 58 // asynchronously. If loading a real wallpaper, there are cases that these | |
| 59 // tests crash because the required widget is not ready. This function | |
| 60 // synchronously creates an empty widget for those tests to prevent | |
| 61 // crashes. An example test is SystemGestureEventFilterTest.ThreeFingerSwipe. | |
| 62 void CreateEmptyWallpaper(); | |
| 63 | |
| 64 // Move all wallpaper widgets to the locked container. | |
| 65 // Returns true if the wallpaper moved. | |
| 66 bool MoveToLockedContainer(); | |
| 67 | |
| 68 // Move all wallpaper widgets to unlocked container. | |
| 69 // Returns true if the wallpaper moved. | |
| 70 bool MoveToUnlockedContainer(); | |
| 71 | |
| 72 // WmDisplayObserver: | |
| 73 void OnDisplayConfigurationChanged() override; | |
| 74 | |
| 75 // ShellObserver: | |
| 76 void OnRootWindowAdded(WmWindow* root_window) override; | |
| 77 | |
| 78 // Returns the maximum size of all displays combined in native | |
| 79 // resolutions. Note that this isn't the bounds of the display who | |
| 80 // has maximum resolutions. Instead, this returns the size of the | |
| 81 // maximum width of all displays, and the maximum height of all displays. | |
| 82 static gfx::Size GetMaxDisplaySizeInNative(); | |
| 83 | |
| 84 // Returns true if the specified wallpaper is already stored | |
| 85 // in |current_wallpaper_|. | |
| 86 // If |compare_layouts| is false, layout is ignored. | |
| 87 bool WallpaperIsAlreadyLoaded(const gfx::ImageSkia& image, | |
| 88 bool compare_layouts, | |
| 89 wallpaper::WallpaperLayout layout) const; | |
| 90 | |
| 91 void set_wallpaper_reload_delay_for_test(int value) { | |
| 92 wallpaper_reload_delay_ = value; | |
| 93 } | |
| 94 | |
| 95 private: | |
| 96 // Creates a WallpaperWidgetController for |root_window|. | |
| 97 void InstallDesktopController(WmWindow* root_window); | |
| 98 | |
| 99 // Creates a WallpaperWidgetController for all root windows. | |
| 100 void InstallDesktopControllerForAllWindows(); | |
| 101 | |
| 102 // Moves the wallpaper to the specified container across all root windows. | |
| 103 // Returns true if a wallpaper moved. | |
| 104 bool ReparentWallpaper(int container); | |
| 105 | |
| 106 // Returns the wallpaper container id for unlocked and locked states. | |
| 107 int GetWallpaperContainerId(bool locked); | |
| 108 | |
| 109 // Reload the wallpaper. |clear_cache| specifies whether to clear the | |
| 110 // wallpaper cahce or not. | |
| 111 void UpdateWallpaper(bool clear_cache); | |
| 112 | |
| 113 bool locked_; | |
| 114 | |
| 115 WallpaperMode wallpaper_mode_; | |
| 116 | |
| 117 base::ObserverList<WallpaperControllerObserver> observers_; | |
| 118 | |
| 119 std::unique_ptr<wallpaper::WallpaperResizer> current_wallpaper_; | |
| 120 | |
| 121 gfx::Size current_max_display_size_; | |
| 122 | |
| 123 base::OneShotTimer timer_; | |
| 124 | |
| 125 int wallpaper_reload_delay_; | |
| 126 | |
| 127 base::SequencedWorkerPool* blocking_pool_; | |
| 128 | |
| 129 DISALLOW_COPY_AND_ASSIGN(WallpaperController); | |
| 130 }; | |
| 131 | |
| 132 } // namespace ash | |
| 133 | |
| 134 #endif // ASH_WALLPAPER_WALLPAPER_CONTROLLER_H_ | |
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Chromium Code Reviews
Issue 2318223003:
mash: Migrate wallpaper controllers to ash/common. (Closed)
