undocache.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2005-02-05
 * Description : undo cache manager for image editor.
 *
 * Copyright (C) 2005      by Renchi Raju <renchi dot raju at gmail dot com>
 * Copyright (C) 2005      by Joern Ahrens <joern dot ahrens at kdemail dot net>
 * Copyright (C) 2006-2022 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation;
 * either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * ============================================================ */
 
#ifndef DIGIKAM_UNDO_CACHE_H
#define DIGIKAM_UNDO_CACHE_H
 
// Local includes
 
#include "dimg.h"
#include "digikam_export.h"
 
namespace Digikam
{
 
class DIGIKAM_EXPORT UndoCache
{
 
public:
 
    explicit UndoCache();
    ~UndoCache();
 
    void clear();
 
    void clearFrom(int level);
 
    bool putData(int level, const DImg& img) const;
 
    DImg getData(int level)                  const;
 
private:
 
    // Disable
    UndoCache(const UndoCache&)            = delete;
    UndoCache& operator=(const UndoCache&) = delete;
 
private:
 
    class Private;
    Private* const d;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_UNDO_CACHE_H