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/*
* Copyright (C) 2011-2013 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2011 Carl Hetherington <carl@carlh.net>
*
* 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 of the License, 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __libardour_region_sorters_h__
#define __libardour_region_sorters_h__
#include "ardour/region.h"
namespace ARDOUR {
struct LIBARDOUR_API RegionSortByPosition {
bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
return a->position() < b->position();
}
};
struct LIBARDOUR_API RegionSortByLayer {
bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
return a->layer() < b->layer();
}
};
/* sort by RegionSortByLayerAndPosition()
* is equivalent to
* stable_sort by RegionSortByPosition();
* stable_sort by RegionSortByLayer();
*/
struct LIBARDOUR_API RegionSortByLayerAndPosition {
bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
return
(a->layer() < b->layer() && a->position() < b->position())
|| (a->layer() == b->layer() && a->position() < b->position());
}
};
} // namespace
#endif /* __libardour_region_sorters_h__ */
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