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      1 // Copyright 2014 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_DISPLAY_DISPLAY_CONFIGURATOR_ANIMATION_H_
      6 #define ASH_DISPLAY_DISPLAY_CONFIGURATOR_ANIMATION_H_
      7 
      8 #include <map>
      9 
     10 #include "ash/ash_export.h"
     11 #include "base/callback.h"
     12 #include "base/memory/weak_ptr.h"
     13 #include "base/timer/timer.h"
     14 #include "ui/display/chromeos/display_configurator.h"
     15 
     16 namespace aura {
     17 class RootWindow;
     18 class Window;
     19 }  // namespace aura
     20 
     21 namespace ui {
     22 class Layer;
     23 }  // namespace ui
     24 
     25 namespace ash {
     26 
     27 // DisplayConfiguratorAnimation provides the visual effects for
     28 // ui::DisplayConfigurator, such like fade-out/in during changing
     29 // the display mode.
     30 class ASH_EXPORT DisplayConfiguratorAnimation
     31     : public ui::DisplayConfigurator::Observer {
     32  public:
     33   DisplayConfiguratorAnimation();
     34   virtual ~DisplayConfiguratorAnimation();
     35 
     36   // Starts the fade-out animation for the all root windows.  It will
     37   // call |callback| once all of the animations have finished.
     38   void StartFadeOutAnimation(base::Closure callback);
     39 
     40   // Starts the animation to clear the fade-out animation effect
     41   // for the all root windows.
     42   void StartFadeInAnimation();
     43 
     44  protected:
     45   // ui::DisplayConfigurator::Observer overrides:
     46   virtual void OnDisplayModeChanged(
     47       const ui::DisplayConfigurator::DisplayStateList& outputs) OVERRIDE;
     48   virtual void OnDisplayModeChangeFailed(
     49       ui::MultipleDisplayState failed_new_state) OVERRIDE;
     50 
     51  private:
     52   // Clears all hiding layers.  Note that in case that this method is called
     53   // during an animation, the method call will cancel all of the animations
     54   // and *not* call the registered callback.
     55   void ClearHidingLayers();
     56 
     57   std::map<aura::Window*, ui::Layer*> hiding_layers_;
     58   scoped_ptr<base::OneShotTimer<DisplayConfiguratorAnimation> > timer_;
     59   base::WeakPtrFactory<DisplayConfiguratorAnimation> weak_ptr_factory_;
     60 
     61   DISALLOW_COPY_AND_ASSIGN(DisplayConfiguratorAnimation);
     62 };
     63 
     64 }  // namespace ash
     65 
     66 #endif  // ASH_DISPLAY_DISPLAY_CONFIGURATION_CONTROLLER_H_
     67