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// Copyright 2013 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.
#ifndef ASH_WM_BOOT_SPLASH_SCREEN_CHROMEOS_H_
#define ASH_WM_BOOT_SPLASH_SCREEN_CHROMEOS_H_
#include <string>
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
namespace aura {
class RootWindow;
}
namespace ui {
class Layer;
class LayerDelegate;
}
namespace ash {
namespace internal {
// BootSplashScreen manages a ui::Layer, stacked at the top of the root layer's
// children, that displays a copy of the initial contents of the host window.
// This allows us to continue displaying the Chrome OS boot splash screen (which
// is displayed before Ash starts) after the compositor has taken over so we can
// animate the transition between the splash screen and the login screen.
class BootSplashScreen {
public:
explicit BootSplashScreen(aura::RootWindow* root_window);
~BootSplashScreen();
// Begins animating |layer_|'s opacity to 0 over |duration|.
void StartHideAnimation(base::TimeDelta duration);
private:
class CopyHostContentLayerDelegate;
// Copies the host window's content to |layer_|.
scoped_ptr<CopyHostContentLayerDelegate> layer_delegate_;
scoped_ptr<ui::Layer> layer_;
DISALLOW_COPY_AND_ASSIGN(BootSplashScreen);
};
} // namespace internal
} // namespace ash
#endif // ASH_WM_BOOT_SPLASH_SCREEN_CHROMEOS_H_
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