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77 lines
2.1 KiB
77 lines
2.1 KiB
/*
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Rosegarden
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A MIDI and audio sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <richard.bown@ferventsoftware.com>
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The moral rights of Guillaume Laurent, Chris Cannam, and Richard
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Bown to claim authorship of this work have been asserted.
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Other copyrights also apply to some parts of this work. Please
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see the AUTHORS file and individual file headers for details.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#include "AddTimeSignatureCommand.h"
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#include "base/Composition.h"
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#include "base/NotationTypes.h"
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#include <tqstring.h>
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namespace Rosegarden
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{
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AddTimeSignatureCommand::AddTimeSignatureCommand(Composition *composition,
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timeT time,
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TimeSignature timeSig) :
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KNamedCommand(getGlobalName()),
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m_composition(composition),
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m_time(time),
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m_timeSignature(timeSig),
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m_oldTimeSignature(0)
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{
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// nothing else
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}
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AddTimeSignatureCommand::~AddTimeSignatureCommand()
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{
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if (m_oldTimeSignature)
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delete m_oldTimeSignature;
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}
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void
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AddTimeSignatureCommand::execute()
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{
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int oldIndex = m_composition->getTimeSignatureNumberAt(m_time);
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if (oldIndex >= 0) {
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std::pair<timeT, TimeSignature> data =
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m_composition->getTimeSignatureChange(oldIndex);
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if (data.first == m_time) {
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m_oldTimeSignature = new TimeSignature(data.second);
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}
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}
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m_timeSigIndex = m_composition->addTimeSignature(m_time, m_timeSignature);
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}
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void
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AddTimeSignatureCommand::unexecute()
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{
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m_composition->removeTimeSignature(m_timeSigIndex);
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if (m_oldTimeSignature) {
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m_composition->addTimeSignature(m_time, *m_oldTimeSignature);
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}
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}
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}
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