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livetrax/libs/temporal/temporal/domain_swap.h

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/*
* Copyright (C) 2023 Paul Davis <paul@linuxaudiosystems.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 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 __temporal_domain_swap_h__
#define __temporal_domain_swap_h__
#include <set>
#include "pbd/command.h"
#include "pbd/destructible.h"
#include "pbd/signals.h"
#include "temporal/types.h"
#include "temporal/timeline.h"
namespace Temporal {
typedef std::map<timepos_t*,timepos_t> TimeDomainPosChanges;
typedef std::map<timecnt_t*,timecnt_t> TimeDomainCntChanges;
struct LIBTEMPORAL_API DomainBounceInfo;
struct LIBTEMPORAL_API TimeDomainSwapper : public virtual PBD::Destructible {
public:
virtual ~TimeDomainSwapper() {}
virtual void start_domain_bounce (DomainBounceInfo&) = 0;
virtual void finish_domain_bounce (DomainBounceInfo&) = 0;
};
/* A DomainBounceInfo functions in two roles:
*
* 1. as part of an UndoTransaction reflecting actions taken by a user that
* modified time domains of one or more objects.
*
* 2. as a standalone object used during temporary domain swaps that records
* (perhaps opaquely) what was changed and provides a way to revert it.
*/
struct LIBTEMPORAL_API DomainBounceInfo
{
DomainBounceInfo (TimeDomain f, TimeDomain t) : from (f), to (t) {}
const TimeDomain from;
const TimeDomain to;
TimeDomainPosChanges positions;
TimeDomainCntChanges counts;
};
}
#endif /* __tmeporal_domain_swap_h__ */