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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_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER2_H_ | |
| 6 #define ASH_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER2_H_ | |
| 7 | |
| 8 #include <set> | |
| 9 | |
| 10 #include "ash/shell_observer.h" | |
| 11 #include "ash/wm/base_layout_manager.h" | |
| 12 #include "base/basictypes.h" | |
| 13 #include "base/compiler_specific.h" | |
| 14 #include "ui/aura/layout_manager.h" | |
| 15 #include "ui/aura/root_window_observer.h" | |
| 16 #include "ui/base/ui_base_types.h" | |
| 17 #include "ui/aura/window_observer.h" | |
| 18 #include "ui/gfx/rect.h" | |
| 19 | |
| 20 namespace aura { | |
| 21 class RootWindow; | |
| 22 class Window; | |
| 23 } | |
| 24 | |
| 25 namespace ui { | |
| 26 class Layer; | |
| 27 } | |
| 28 | |
| 29 namespace ash { | |
| 30 | |
| 31 // We force at least this many DIPs for any window on the screen. | |
| 32 const int kMinimumOnScreenArea = 10; | |
| 33 | |
| 34 namespace internal { | |
| 35 | |
| 36 class Workspace2; | |
| 37 class WorkspaceManager2; | |
| 38 | |
| 39 // LayoutManager used on the window created for a Workspace. | |
| 40 // TODO(sky): this code shares a fair amount of similarities with | |
| 41 // BaseLayoutManager, yet its different enough that subclassing is painful. | |
| 42 // See if I can refactor the code to make it easier to share common bits. | |
| 43 class ASH_EXPORT WorkspaceLayoutManager2 | |
| 44 : public aura::LayoutManager, | |
| 45 public aura::RootWindowObserver, | |
| 46 public ash::ShellObserver, | |
| 47 public aura::WindowObserver { | |
| 48 public: | |
| 49 public: | |
| 50 explicit WorkspaceLayoutManager2(Workspace2* workspace); | |
| 51 virtual ~WorkspaceLayoutManager2(); | |
| 52 | |
| 53 // Overridden from BaseWorkspaceLayoutManager: | |
| 54 virtual void OnWindowResized() OVERRIDE {} | |
| 55 virtual void OnWindowAddedToLayout(aura::Window* child) OVERRIDE; | |
| 56 virtual void OnWillRemoveWindowFromLayout(aura::Window* child) OVERRIDE; | |
| 57 virtual void OnWindowRemovedFromLayout(aura::Window* child) OVERRIDE; | |
| 58 virtual void OnChildWindowVisibilityChanged(aura::Window* child, | |
| 59 bool visibile) OVERRIDE; | |
| 60 virtual void SetChildBounds(aura::Window* child, | |
| 61 const gfx::Rect& requested_bounds) OVERRIDE; | |
| 62 | |
| 63 // RootWindowObserver overrides: | |
| 64 virtual void OnRootWindowResized(const aura::RootWindow* root, | |
| 65 const gfx::Size& old_size) OVERRIDE; | |
| 66 | |
| 67 // ash::ShellObserver overrides: | |
| 68 virtual void OnDisplayWorkAreaInsetsChanged() OVERRIDE; | |
| 69 | |
| 70 // Overriden from WindowObserver: | |
| 71 virtual void OnWindowPropertyChanged(aura::Window* window, | |
| 72 const void* key, | |
| 73 intptr_t old) OVERRIDE; | |
| 74 virtual void OnWindowDestroying(aura::Window* window) OVERRIDE; | |
| 75 | |
| 76 private: | |
| 77 typedef std::set<aura::Window*> WindowSet; | |
| 78 | |
| 79 // Invoked when the show state of a window changes. |cloned_layer| is a clone | |
| 80 // of the windows layer tree. |cloned_layer| is only non-NULL if a cross fade | |
| 81 // should happen between the states. This method takes ownership of | |
| 82 // |cloned_layer|. | |
| 83 void ShowStateChanged(aura::Window* window, | |
| 84 ui::WindowShowState last_show_state, | |
| 85 ui::Layer* cloned_layer); | |
| 86 | |
| 87 enum AdjustWindowReason { | |
| 88 ADJUST_WINDOW_SCREEN_SIZE_CHANGED, | |
| 89 ADJUST_WINDOW_DISPLAY_INSETS_CHANGED | |
| 90 }; | |
| 91 | |
| 92 // Adjusts the sizes of the windows during a screen change. If this is called | |
| 93 // for a screen size change (i.e. |reason| is | |
| 94 // ADJUST_WINDOW_SCREEN_SIZE_CHANGED), the non-maximized/non-fullscreen | |
| 95 // windows are readjusted to make sure the window is completely within the | |
| 96 // display region. Otherwise, it makes sure at least some parts of the window | |
| 97 // is on display. | |
| 98 void AdjustWindowSizesForScreenChange(AdjustWindowReason reason); | |
| 99 | |
| 100 // Adjusts the sizes of the specific window in respond to a screen change or | |
| 101 // display-area size change. | |
| 102 void AdjustWindowSizeForScreenChange(aura::Window* window, | |
| 103 AdjustWindowReason reason); | |
| 104 | |
| 105 // Updates the bounds of the window from a show state change. | |
| 106 void UpdateBoundsFromShowState(aura::Window* window); | |
| 107 | |
| 108 // If |window| is maximized or fullscreen the bounds of the window are set and | |
| 109 // true is returned. Does nothing otherwise. | |
| 110 bool SetMaximizedOrFullscreenBounds(aura::Window* window); | |
| 111 | |
| 112 WorkspaceManager2* workspace_manager(); | |
| 113 | |
| 114 aura::RootWindow* root_window_; | |
| 115 | |
| 116 Workspace2* workspace_; | |
| 117 | |
| 118 // Set of windows we're listening to. | |
| 119 WindowSet windows_; | |
| 120 | |
| 121 // The work area. Cached to avoid unnecessarily moving windows during a | |
| 122 // workspace switch. | |
| 123 gfx::Rect work_area_; | |
| 124 | |
| 125 DISALLOW_COPY_AND_ASSIGN(WorkspaceLayoutManager2); | |
| 126 }; | |
| 127 | |
| 128 } // namespace internal | |
| 129 } // namespace ash | |
| 130 | |
| 131 #endif // ASH_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER2_H_ | |
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