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/*
* This file is part of Siril, an astronomy image processor.
* Copyright (C) 2005-2011 Francois Meyer (dulle at free.fr)
* Copyright (C) 2012-2015 team free-astro (see more in AUTHORS file)
* Reference site is https://free-astro.org/index.php/Siril
*
* Siril 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 3 of the License, or
* (at your option) any later version.
*
* Siril 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.
*
* You should have received a copy of the GNU General Public License
* along with Siril. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef UNDO_H_
#define UNDO_H_
#define UNDO -1
#define REDO 1
#define HISTORY_SIZE 30 // size of the operations history
gboolean is_undo_available();
gboolean is_redo_available();
int undo_display_data(int dir);
int undo_save_state(fits *fit, char *message, ...);
int undo_flush();
#endif /* UNDO_H_ */
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