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// Copyright (c) 2012 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 UI_VIEWS_WIN_SCOPED_FULLSCREEN_VISIBILITY_H_
#define UI_VIEWS_WIN_SCOPED_FULLSCREEN_VISIBILITY_H_
#include <windows.h>
#include <map>
#include "base/basictypes.h"
#include "ui/views/views_export.h"
namespace views {
// Scoping class that ensures a HWND remains hidden while it enters or leaves
// the fullscreen state. This reduces some flicker-jank that an application UI
// might suffer.
class VIEWS_EXPORT ScopedFullscreenVisibility {
public:
explicit ScopedFullscreenVisibility(HWND hwnd);
~ScopedFullscreenVisibility();
// Returns true if |hwnd| is currently hidden due to instance(s) of this
// class.
static bool IsHiddenForFullscreen(HWND hwnd);
private:
typedef std::map<HWND, int> FullscreenHWNDs;
HWND hwnd_;
static FullscreenHWNDs* full_screen_windows_;
DISALLOW_COPY_AND_ASSIGN(ScopedFullscreenVisibility);
};
} // namespace views
#endif // UI_VIEWS_WIN_SCOPED_FULLSCREEN_VISIBILITY_H_
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