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170 lines
4.3 KiB
170 lines
4.3 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 "BasicCommand.h"
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#include "base/Segment.h"
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#include <tqstring.h>
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namespace Rosegarden
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{
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BasicCommand::BasicCommand(const TQString &name, Segment &segment,
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timeT start, timeT end, bool bruteForceRedo) :
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KNamedCommand(name),
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m_startTime(calculateStartTime(start, segment)),
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m_endTime(calculateEndTime(end, segment)),
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m_segment(segment),
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m_savedEvents(segment.getType(), m_startTime),
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m_doBruteForceRedo(false),
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m_redoEvents(0)
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{
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if (m_endTime == m_startTime) ++m_endTime;
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if (bruteForceRedo) {
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m_redoEvents = new Segment(segment.getType(), m_startTime);
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}
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}
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BasicCommand::~BasicCommand()
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{
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m_savedEvents.clear();
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if (m_redoEvents) m_redoEvents->clear();
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delete m_redoEvents;
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}
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timeT
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BasicCommand::calculateStartTime(timeT given, Segment &segment)
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{
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timeT actual = given;
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Segment::iterator i = segment.findTime(given);
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while (i != segment.end() && (*i)->getAbsoluteTime() == given) {
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timeT notation = (*i)->getNotationAbsoluteTime();
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if (notation < given) actual = notation;
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++i;
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}
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return actual;
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}
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timeT
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BasicCommand::calculateEndTime(timeT given, Segment &segment)
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{
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timeT actual = given;
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Segment::iterator i = segment.findTime(given);
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while (i != segment.end() && (*i)->getAbsoluteTime() == given) {
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timeT notation = (*i)->getNotationAbsoluteTime();
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if (notation > given) actual = notation;
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++i;
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}
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return actual;
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}
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Rosegarden::Segment& BasicCommand::getSegment()
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{
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return m_segment;
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}
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Rosegarden::timeT BasicCommand::getRelayoutEndTime()
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{
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return getEndTime();
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}
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void
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BasicCommand::beginExecute()
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{
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copyTo(&m_savedEvents);
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}
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void
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BasicCommand::execute()
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{
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beginExecute();
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if (!m_doBruteForceRedo) {
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modifySegment();
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} else {
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copyFrom(m_redoEvents);
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}
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m_segment.updateRefreshStatuses(getStartTime(), getRelayoutEndTime());
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RG_DEBUG << "BasicCommand(" << name() << "): updated refresh statuses "
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<< getStartTime() << " -> " << getRelayoutEndTime() << endl;
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}
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void
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BasicCommand::unexecute()
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{
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if (m_redoEvents) {
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copyTo(m_redoEvents);
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m_doBruteForceRedo = true;
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}
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copyFrom(&m_savedEvents);
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m_segment.updateRefreshStatuses(getStartTime(), getRelayoutEndTime());
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}
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void
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BasicCommand::copyTo(Rosegarden::Segment *events)
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{
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RG_DEBUG << "BasicCommand(" << name() << ")::copyTo: " << &m_segment << " to "
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<< events << ", range ("
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<< m_startTime << "," << m_endTime
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<< ")" << endl;
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Segment::iterator from = m_segment.findTime(m_startTime);
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Segment::iterator to = m_segment.findTime(m_endTime);
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for (Segment::iterator i = from; i != m_segment.end() && i != to; ++i) {
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// RG_DEBUG << "Found event of type " << (*i)->getType() << " and duration " << (*i)->getDuration() << endl;
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events->insert(new Event(**i));
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}
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}
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void
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BasicCommand::copyFrom(Rosegarden::Segment *events)
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{
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RG_DEBUG << "BasicCommand(" << name() << ")::copyFrom: " << events << " to "
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<< &m_segment << ", range ("
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<< m_startTime << "," << m_endTime
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<< ")" << endl;
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m_segment.erase(m_segment.findTime(m_startTime),
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m_segment.findTime(m_endTime));
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for (Segment::iterator i = events->begin(); i != events->end(); ++i) {
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// RG_DEBUG << "Found event of type " << (*i)->getType() << " and duration " << (*i)->getDuration() << endl;
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m_segment.insert(new Event(**i));
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}
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events->clear();
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}
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}
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