1// Copyright 2013 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_BOOT_SPLASH_SCREEN_CHROMEOS_H_ 6#define ASH_WM_BOOT_SPLASH_SCREEN_CHROMEOS_H_ 7 8#include <string> 9 10#include "base/basictypes.h" 11#include "base/memory/scoped_ptr.h" 12#include "base/time/time.h" 13 14namespace aura { 15class RootWindow; 16} 17 18namespace ui { 19class Layer; 20class LayerDelegate; 21} 22 23namespace ash { 24namespace internal { 25 26// BootSplashScreen manages a ui::Layer, stacked at the top of the root layer's 27// children, that displays a copy of the initial contents of the host window. 28// This allows us to continue displaying the Chrome OS boot splash screen (which 29// is displayed before Ash starts) after the compositor has taken over so we can 30// animate the transition between the splash screen and the login screen. 31class BootSplashScreen { 32 public: 33 explicit BootSplashScreen(aura::RootWindow* root_window); 34 ~BootSplashScreen(); 35 36 // Begins animating |layer_|'s opacity to 0 over |duration|. 37 void StartHideAnimation(base::TimeDelta duration); 38 39 private: 40 class CopyHostContentLayerDelegate; 41 42 // Copies the host window's content to |layer_|. 43 scoped_ptr<CopyHostContentLayerDelegate> layer_delegate_; 44 45 scoped_ptr<ui::Layer> layer_; 46 47 DISALLOW_COPY_AND_ASSIGN(BootSplashScreen); 48}; 49 50} // namespace internal 51} // namespace ash 52 53#endif // ASH_WM_BOOT_SPLASH_SCREEN_CHROMEOS_H_ 54