You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
147 lines
4.1 KiB
147 lines
4.1 KiB
/*
|
|
Rosegarden
|
|
A MIDI and audio sequencer and musical notation editor.
|
|
|
|
This program is Copyright 2000-2008
|
|
Guillaume Laurent <glaurent@telegraph-road.org>,
|
|
Chris Cannam <cannam@all-day-breakfast.com>,
|
|
Richard Bown <richard.bown@ferventsoftware.com>
|
|
|
|
The moral rights of Guillaume Laurent, Chris Cannam, and Richard
|
|
Bown to claim authorship of this work have been asserted.
|
|
|
|
Other copyrights also apply to some parts of this work. Please
|
|
see the AUTHORS file and individual file headers for details.
|
|
|
|
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. See the file
|
|
COPYING included with this distribution for more information.
|
|
*/
|
|
|
|
|
|
#include "SegmentRescaleCommand.h"
|
|
|
|
#include "misc/Strings.h"
|
|
#include "base/Event.h"
|
|
#include "base/Composition.h"
|
|
#include "base/NotationTypes.h"
|
|
#include "base/Segment.h"
|
|
#include <tqstring.h>
|
|
|
|
|
|
namespace Rosegarden
|
|
{
|
|
|
|
SegmentRescaleCommand::SegmentRescaleCommand(Segment *s,
|
|
int multiplier,
|
|
int divisor) :
|
|
KNamedCommand(getGlobalName()),
|
|
m_segment(s),
|
|
m_newSegment(0),
|
|
m_startTimeGiven(false),
|
|
m_startTime(s->getStartTime()),
|
|
m_multiplier(multiplier),
|
|
m_divisor(divisor),
|
|
m_detached(false)
|
|
{
|
|
// nothing
|
|
}
|
|
|
|
SegmentRescaleCommand::SegmentRescaleCommand(Segment *s,
|
|
int multiplier,
|
|
int divisor,
|
|
timeT st) :
|
|
KNamedCommand(getGlobalName()),
|
|
m_segment(s),
|
|
m_newSegment(0),
|
|
m_startTimeGiven(true),
|
|
m_startTime(st),
|
|
m_multiplier(multiplier),
|
|
m_divisor(divisor),
|
|
m_detached(false)
|
|
{
|
|
// nothing
|
|
}
|
|
|
|
SegmentRescaleCommand::~SegmentRescaleCommand()
|
|
{
|
|
if (m_detached) {
|
|
delete m_segment;
|
|
} else {
|
|
delete m_newSegment;
|
|
}
|
|
}
|
|
|
|
timeT
|
|
SegmentRescaleCommand::rescale(timeT t)
|
|
{
|
|
// avoid overflows by using doubles
|
|
double d = t;
|
|
d *= m_multiplier;
|
|
d /= m_divisor;
|
|
d += 0.5;
|
|
return (timeT)d;
|
|
}
|
|
|
|
void
|
|
SegmentRescaleCommand::execute()
|
|
{
|
|
timeT startTime = m_segment->getStartTime();
|
|
|
|
if (m_startTimeGiven) startTime = m_startTime;
|
|
|
|
if (!m_newSegment) {
|
|
|
|
m_newSegment = new Segment();
|
|
m_newSegment->setTrack(m_segment->getTrack());
|
|
TQString oldLabel = strtoqstr(m_segment->getLabel());
|
|
if (oldLabel.endsWith(i18n("(rescaled)"))) {
|
|
m_newSegment->setLabel(m_segment->getLabel());
|
|
} else {
|
|
m_newSegment->setLabel(qstrtostr(i18n("%1 (rescaled)").arg
|
|
(oldLabel)));
|
|
}
|
|
m_newSegment->setColourIndex(m_segment->getColourIndex());
|
|
|
|
for (Segment::iterator i = m_segment->begin();
|
|
m_segment->isBeforeEndMarker(i); ++i) {
|
|
|
|
if ((*i)->isa(Note::EventRestType))
|
|
continue;
|
|
|
|
timeT dt = (*i)->getAbsoluteTime() - startTime;
|
|
timeT duration = (*i)->getDuration();
|
|
|
|
//!!! use doubles for this calculation where necessary
|
|
|
|
m_newSegment->insert
|
|
(new Event(**i,
|
|
startTime + rescale(dt),
|
|
rescale(duration)));
|
|
}
|
|
}
|
|
|
|
m_segment->getComposition()->addSegment(m_newSegment);
|
|
m_segment->getComposition()->detachSegment(m_segment);
|
|
m_newSegment->normalizeRests(m_newSegment->getStartTime(),
|
|
m_newSegment->getEndTime());
|
|
|
|
m_newSegment->setEndMarkerTime
|
|
(startTime + rescale(m_segment->getEndMarkerTime() -
|
|
m_segment->getStartTime()));
|
|
|
|
m_detached = true;
|
|
}
|
|
|
|
void
|
|
SegmentRescaleCommand::unexecute()
|
|
{
|
|
m_newSegment->getComposition()->addSegment(m_segment);
|
|
m_newSegment->getComposition()->detachSegment(m_newSegment);
|
|
m_detached = false;
|
|
}
|
|
|
|
}
|