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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_SHADOW_CONTROLLER_H_ | |
| 6 #define ASH_WM_SHADOW_CONTROLLER_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 | |
| 10 #include "ash/ash_export.h" | |
| 11 #include "base/basictypes.h" | |
| 12 #include "base/compiler_specific.h" | |
| 13 #include "base/memory/linked_ptr.h" | |
| 14 #include "base/scoped_observer.h" | |
| 15 #include "ui/aura/client/activation_change_observer.h" | |
| 16 #include "ui/aura/env_observer.h" | |
| 17 #include "ui/aura/window_observer.h" | |
| 18 | |
| 19 namespace aura { | |
| 20 class Window; | |
| 21 } | |
| 22 namespace gfx { | |
| 23 class Rect; | |
| 24 } | |
| 25 | |
| 26 namespace ash { | |
| 27 namespace internal { | |
| 28 | |
| 29 class Shadow; | |
| 30 | |
| 31 // ShadowController observes changes to windows and creates and updates drop | |
| 32 // shadows as needed. | |
| 33 class ASH_EXPORT ShadowController : | |
| 34 public aura::EnvObserver, | |
| 35 public aura::WindowObserver, | |
| 36 public aura::client::ActivationChangeObserver { | |
| 37 public: | |
| 38 class TestApi { | |
| 39 public: | |
| 40 explicit TestApi(ShadowController* controller) : controller_(controller) {} | |
| 41 ~TestApi() {} | |
| 42 | |
| 43 Shadow* GetShadowForWindow(aura::Window* window) { | |
| 44 return controller_->GetShadowForWindow(window); | |
| 45 } | |
| 46 | |
| 47 private: | |
| 48 ShadowController* controller_; // not owned | |
| 49 | |
| 50 DISALLOW_COPY_AND_ASSIGN(TestApi); | |
| 51 }; | |
| 52 | |
| 53 explicit ShadowController(); | |
| 54 virtual ~ShadowController(); | |
| 55 | |
| 56 // aura::EnvObserver override: | |
| 57 virtual void OnWindowInitialized(aura::Window* window) OVERRIDE; | |
| 58 | |
| 59 // aura::WindowObserver overrides: | |
| 60 virtual void OnWindowPropertyChanged( | |
| 61 aura::Window* window, const void* key, intptr_t old) OVERRIDE; | |
| 62 virtual void OnWindowBoundsChanged( | |
| 63 aura::Window* window, | |
| 64 const gfx::Rect& old_bounds, | |
| 65 const gfx::Rect& new_bounds) OVERRIDE; | |
| 66 virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE; | |
| 67 | |
| 68 // aura::client::ActivationChangeObserver overrides: | |
| 69 virtual void OnWindowActivated(aura::Window* active, | |
| 70 aura::Window* old_active) OVERRIDE; | |
| 71 | |
| 72 private: | |
| 73 typedef std::map<aura::Window*, linked_ptr<Shadow> > WindowShadowMap; | |
| 74 | |
| 75 // Checks if |window| is visible and contains a property requesting a shadow. | |
| 76 bool ShouldShowShadowForWindow(aura::Window* window) const; | |
| 77 | |
| 78 // Returns |window|'s shadow from |window_shadows_|, or NULL if no shadow | |
| 79 // exists. | |
| 80 Shadow* GetShadowForWindow(aura::Window* window); | |
| 81 | |
| 82 // Updates the shadow styles for windows when activation changes. | |
| 83 void HandleWindowActivationChange(aura::Window* gaining_active, | |
| 84 aura::Window* losing_active); | |
| 85 | |
| 86 // Shows or hides |window|'s shadow as needed (creating the shadow if | |
| 87 // necessary). | |
| 88 void HandlePossibleShadowVisibilityChange(aura::Window* window); | |
| 89 | |
| 90 // Creates a new shadow for |window| and stores it in |window_shadows_|. The | |
| 91 // shadow's bounds are initialized and it is added to the window's layer. | |
| 92 void CreateShadowForWindow(aura::Window* window); | |
| 93 | |
| 94 WindowShadowMap window_shadows_; | |
| 95 | |
| 96 ScopedObserver<aura::Window, aura::WindowObserver> observer_manager_; | |
| 97 | |
| 98 DISALLOW_COPY_AND_ASSIGN(ShadowController); | |
| 99 }; | |
| 100 | |
| 101 } // namespace internal | |
| 102 } // namespace ash | |
| 103 | |
| 104 #endif // ASH_WM_SHADOW_CONTROLLER_H_ | |
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Chromium Code Reviews
Issue 11275296:
Move shadow code to views\corewm (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/