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