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//=============================================================================
// MuseScore
// Music Composition & Notation
//
// Copyright (C) 2002-2012 Werner Schweer
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2
// as published by the Free Software Foundation and appearing in
// the file LICENCE.GPL
//=============================================================================
#include "score.h"
#include "measure.h"
#include "segment.h"
#include "chordrest.h"
#include "range.h"
#include "tuplet.h"
#include "spanner.h"
#include "undo.h"
namespace Ms {
//---------------------------------------------------------
// cmdSplitMeasure
//---------------------------------------------------------
void Score::cmdSplitMeasure(ChordRest* cr)
{
startCmd();
splitMeasure(cr->segment());
endCmd();
}
//---------------------------------------------------------
// splitMeasure
// return true on success
//---------------------------------------------------------
void Score::splitMeasure(Segment* segment)
{
if (segment->rtick().isZero()) {
MScore::setError(CANNOT_SPLIT_MEASURE_FIRST_BEAT);
return;
}
if (segment->splitsTuplet()) {
MScore::setError(CANNOT_SPLIT_MEASURE_TUPLET);
return;
}
Measure* measure = segment->measure();
ScoreRange range;
range.read(measure->first(), measure->last());
Fraction stick = measure->tick();
Fraction etick = measure->endTick();
std::list<std::tuple<Spanner*, Fraction, Fraction>> sl;
for (auto i : spanner()) {
Spanner* s = i.second;
Element* start = s->startElement();
Element* end = s->endElement();
if (s->tick() >= stick && s->tick() < etick)
start = nullptr;
if (s->tick2() >= stick && s->tick2() < etick)
end = nullptr;
if (start != s->startElement() || end != s->endElement())
undo(new ChangeStartEndSpanner(s, start, end));
if (s->tick() < stick && s->tick2() > stick)
sl.push_back(make_tuple(s, s->tick(), s->ticks()));
}
MeasureBase* nm = measure->next();
undoRemoveMeasures(measure, measure);
undoInsertTime(measure->tick(), -measure->ticks());
// create empty measures:
insertMeasure(ElementType::MEASURE, nm, true);
Measure* m2 = toMeasure(nm ? nm->prev() : lastMeasure());
insertMeasure(ElementType::MEASURE, m2, true);
Measure* m1 = toMeasure(m2->prev());
Fraction tick = segment->tick();
m1->setTick(measure->tick());
m2->setTick(tick);
Fraction ticks1 = segment->tick() - measure->tick();
Fraction ticks2 = measure->ticks() - ticks1;
m1->setTimesig(measure->timesig());
m2->setTimesig(measure->timesig());
m1->adjustToLen(ticks1.reduced(), false);
m2->adjustToLen(ticks2.reduced(), false);
range.write(this, m1->tick());
for (auto i : sl) {
Spanner* s = std::get<0>(i);
Fraction t = std::get<1>(i);
Fraction ticks = std::get<2>(i);
if (s->tick() != t)
s->undoChangeProperty(Pid::SPANNER_TICK, t);
if (s->ticks() != ticks)
s->undoChangeProperty(Pid::SPANNER_TICKS, ticks);
}
}
}
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