Add fade to white animation when power button is pressed on Athena

athena/screen/screen_manager_impl.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "athena/screen/public/screen_manager.h"
 
 #include "athena/common/container_priorities.h"
 #include "athena/common/fill_layout_manager.h"
 #include "athena/input/public/accelerator_manager.h"
 #include "athena/screen/background_controller.h"
 #include "athena/screen/screen_accelerator_handler.h"
+#include "athena/screen/screen_animator_impl.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/client/window_tree_client.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_property.h"
 #include "ui/aura/window_targeter.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/wm/core/base_focus_rules.h"
@@ skipping 170 matching lines @@
 
   void Init();
 
  private:
   // ScreenManager:
   virtual aura::Window* CreateDefaultContainer(
       const ContainerParams& params) OVERRIDE;
   virtual aura::Window* CreateContainer(const ContainerParams& params) OVERRIDE;
   virtual aura::Window* GetContext() OVERRIDE { return root_window_; }
   virtual void SetBackgroundImage(const gfx::ImageSkia& image) OVERRIDE;
+  virtual scoped_ptr<ScreenAnimator> CreateScreenAnimator() OVERRIDE;
 
   aura::Window* root_window_;
   aura::Window* background_window_;
 
   scoped_ptr<BackgroundController> background_controller_;
   scoped_ptr<aura::client::WindowTreeClient> window_tree_client_;
   scoped_ptr<AcceleratorHandler> accelerator_handler_;
   scoped_ptr< ::wm::ScopedCaptureClient> capture_client_;
   scoped_ptr<aura::client::ScreenPositionClient> screen_position_client_;
 
@@ skipping 103 matching lines @@
     root_window_->StackChildBelow(container, *iter);
 
   container->Show();
   return container;
 }
 
 void ScreenManagerImpl::SetBackgroundImage(const gfx::ImageSkia& image) {
   background_controller_->SetImage(image);
 }
 
+scoped_ptr<ScreenAnimator> ScreenManagerImpl::CreateScreenAnimator() {
+  return scoped_ptr<ScreenAnimator>(new ScreenAnimatorImpl(root_window_));
+}
+
 }  // namespace
 
 ScreenManager::ContainerParams::ContainerParams(const std::string& n,
                                                 int priority)
     : name(n),
       can_activate_children(false),
       grab_inputs(false),
       z_order_priority(priority) {
 }
 
@@ skipping 16 matching lines @@
   delete instance;
   DCHECK(!instance);
 }
 
 // static
 wm::FocusRules* ScreenManager::CreateFocusRules() {
   return new AthenaFocusRules();
 }
 
 }  // namespace athena