C++ Lyrics::setTrack方法代码示例

ChordRest::ChordRest(const ChordRest& cr, bool link)
   : DurationElement(cr)
      {
      _durationType = cr._durationType;
      _staffMove    = cr._staffMove;
      _beam         = 0;
      _tabDur       = 0;  // tab sur. symb. depends upon context: can't be
                          // simply copied from another CR

      for (Articulation* a : cr._articulations) {    // make deep copy
            Articulation* na = new Articulation(*a);
            if (link)
                  na->linkTo(a);
            na->setParent(this);
            na->setTrack(track());
            _articulations.append(na);
            }

      _beamMode     = cr._beamMode;
      _up           = cr._up;
      _small        = cr._small;
      _crossMeasure = cr._crossMeasure;
      _space        = cr._space;

      for (Lyrics* l : cr._lyricsList) {        // make deep copy
            if (l == 0)
                  continue;
            Lyrics* nl = new Lyrics(*l);
            if (link)
                  nl->linkTo(l);
            nl->setParent(this);
            nl->setTrack(track());
            _lyricsList.append(nl);
            }
      }

void ScoreView::lyricsReturn()
      {
      Lyrics* lyrics = toLyrics(editData.element);

      changeState(ViewState::NORMAL);

      _score->startCmd();
      int newVerse;
      newVerse = lyrics->no() + 1;

      Lyrics* oldLyrics = lyrics;
      lyrics = new Lyrics(_score);
      lyrics->setTrack(oldLyrics->track());
      lyrics->setParent(oldLyrics->segment()->element(oldLyrics->track()));
      lyrics->setPlacement(oldLyrics->placement());
      lyrics->setPropertyFlags(Pid::PLACEMENT, oldLyrics->propertyFlags(Pid::PLACEMENT));
      lyrics->setNo(newVerse);

      _score->undoAddElement(lyrics);
      _score->endCmd();

      _score->select(lyrics, SelectType::SINGLE, 0);
      startEdit(lyrics, Grip::NO_GRIP);

      adjustCanvasPosition(lyrics, false);
      }

void ScoreView::lyricsReturn()
      {
      Lyrics* lyrics   = (Lyrics*)editObject;
      Segment* segment = lyrics->segment();

      endEdit();

      _score->startCmd();

      Lyrics* oldLyrics = lyrics;

      lyrics = static_cast<Lyrics*>(Element::create(lyrics->type(), _score));
      lyrics->setTrack(oldLyrics->track());
      lyrics->setParent(segment->element(oldLyrics->track()));
      lyrics->setNo(oldLyrics->no() + 1);
      _score->undoAddElement(lyrics);
      _score->select(lyrics, SELECT_SINGLE, 0);
      startEdit(lyrics, -1);
      mscore->changeState(mscoreState());

      adjustCanvasPosition(lyrics, false);
      _score->setLayoutAll(true);
      _score->end2();
      _score->end1();
      }

void ScoreView::lyricsUpDown(bool up, bool end)
      {
      Lyrics* lyrics       = toLyrics(editData.element);
      int track            = lyrics->track();
      ChordRest* cr        = lyrics->chordRest();
      int verse            = lyrics->no();
      Placement placement  = lyrics->placement();
      PropertyFlags pFlags = lyrics->propertyFlags(Pid::PLACEMENT);

      if (up) {
            if (verse == 0)
                  return;
            --verse;
            }
      else {
            ++verse;
            if (verse > cr->lastVerse(placement))
                  return;
            }

      changeState(ViewState::NORMAL);
      lyrics = cr->lyrics(verse, placement);
      if (!lyrics) {
            lyrics = new Lyrics(_score);
            lyrics->setTrack(track);
            lyrics->setParent(cr);
            lyrics->setNo(verse);
            lyrics->setPlacement(placement);
            lyrics->setPropertyFlags(Pid::PLACEMENT, pFlags);
            _score->startCmd();
            _score->undoAddElement(lyrics);
            _score->endCmd();
            }

      _score->select(lyrics, SelectType::SINGLE, 0);
      startEdit(lyrics, Grip::NO_GRIP);
      mscore->changeState(mscoreState());
      adjustCanvasPosition(lyrics, false);

      lyrics = toLyrics(editData.element);
      TextCursor* cursor = lyrics->cursor(editData);
      if (end) {
            cursor->movePosition(QTextCursor::Start, QTextCursor::MoveAnchor);
            cursor->movePosition(QTextCursor::End, QTextCursor::KeepAnchor);
            }
      else {
            cursor->movePosition(QTextCursor::End, QTextCursor::MoveAnchor);
            cursor->movePosition(QTextCursor::Start, QTextCursor::KeepAnchor);
            }

      _score->setLayoutAll();
      _score->update();
      }

void ScoreView::lyricsUpDown(bool up, bool end)
      {
      Lyrics* lyrics   = toLyrics(editObject);
      int track        = lyrics->track();
      ChordRest* cr    = lyrics->chordRest();
      int verse        = lyrics->no();
      Element::Placement placement = lyrics->placement();

      if (placement == Element::Placement::ABOVE)
            up = !up;
      if (up) {
            if (verse == 0)
                  return;
            --verse;
            }
      else {
            ++verse;
            if (verse > cr->lastVerse(placement))
                  return;
            }

      endEdit();
      _score->startCmd();
      lyrics = cr->lyrics(verse, placement);
      if (!lyrics) {
            lyrics = new Lyrics(_score);
            lyrics->setTrack(track);
            lyrics->setParent(cr);
            lyrics->setNo(verse);
            lyrics->setPlacement(placement);
            _score->undoAddElement(lyrics);
            }

      _score->select(lyrics, SelectType::SINGLE, 0);
      startEdit(lyrics, Grip::NO_GRIP);
      mscore->changeState(mscoreState());
      adjustCanvasPosition(lyrics, false);
      if (end) {
            ((Lyrics*)editObject)->movePosition(QTextCursor::Start, QTextCursor::MoveAnchor);
            ((Lyrics*)editObject)->movePosition(QTextCursor::End, QTextCursor::KeepAnchor);
            }
      else {
            ((Lyrics*)editObject)->movePosition(QTextCursor::End, QTextCursor::MoveAnchor);
            ((Lyrics*)editObject)->movePosition(QTextCursor::Start, QTextCursor::KeepAnchor);
            }

      _score->setLayoutAll();
      _score->update();
      }

void ScoreView::lyricsReturn()
      {
      Lyrics* lyrics   = (Lyrics*)editObject;
      Segment* segment = lyrics->segment();

      endEdit();

      _score->startCmd();

      Lyrics* oldLyrics = lyrics;

      int newVerse;
      if (lyrics->placeAbove()) {
            newVerse = oldLyrics->no() - 1;
            if (newVerse == -1) {
                  // raise all lyrics above
                  newVerse = 0;
                  for (Segment* s = _score->firstSegment(Segment::Type::ChordRest); s; s = s->next1(Segment::Type::ChordRest)) {
                        ChordRest* cr = s->cr(lyrics->track());
                        if (cr) {
                              for (Lyrics* l : cr->lyrics()) {
                                    if (l->placement() == oldLyrics->placement())
                                          l->undoChangeProperty(P_ID::VERSE, l->no() + 1);
                                    }
                              }
                        }
                  }
            }
      else
            newVerse = oldLyrics->no() + 1;
      lyrics = static_cast<Lyrics*>(Element::create(lyrics->type(), _score));
      lyrics->setTrack(oldLyrics->track());
      lyrics->setParent(segment->element(oldLyrics->track()));
      lyrics->setPlacement(oldLyrics->placement());

      lyrics->setNo(newVerse);

      _score->undoAddElement(lyrics);
      _score->select(lyrics, SelectType::SINGLE, 0);
      startEdit(lyrics, Grip::NO_GRIP);
      mscore->changeState(mscoreState());

      adjustCanvasPosition(lyrics, false);
      _score->setLayoutAll();
      _score->update();
      }

void ScoreView::lyricsUpDown(bool up, bool end)
      {
      Lyrics* lyrics   = static_cast<Lyrics*>(editObject);
      int track        = lyrics->track();
      ChordRest* cr    = lyrics->chordRest();
      int verse        = lyrics->no();
      const QList<Lyrics*>* ll = &lyrics->chordRest()->lyricsList();

      if (up) {
            if (verse == 0)
                  return;
            --verse;
            }
      else {
            ++verse;
            if (verse >= ll->size())
                  return;
            }
      endEdit();
      _score->startCmd();
      lyrics = ll->value(verse);
      if (!lyrics) {
            lyrics = new Lyrics(_score);
            lyrics->setTrack(track);
            lyrics->setParent(cr);
            lyrics->setNo(verse);
            _score->undoAddElement(lyrics);
            }

      _score->select(lyrics, SELECT_SINGLE, 0);
      startEdit(lyrics, -1);
      mscore->changeState(mscoreState());
      adjustCanvasPosition(lyrics, false);
      if (end)
            ((Lyrics*)editObject)->moveCursorToEnd();
      else
            ((Lyrics*)editObject)->moveCursorToStart();

      _score->setLayoutAll(true);
      _score->end2();
      _score->end1();
      }

void ScoreView::lyricsUnderscore()
      {
      Lyrics* lyrics   = toLyrics(editData.element);
      int track        = lyrics->track();
      Segment* segment = lyrics->segment();
      int verse        = lyrics->no();
      Placement placement = lyrics->placement();
      PropertyFlags pFlags = lyrics->propertyFlags(Pid::PLACEMENT);
      int endTick      = segment->tick(); // a previous melisma cannot extend beyond this point

      changeState(ViewState::NORMAL);

      // search next chord
      Segment* nextSegment = segment;
      while ((nextSegment = nextSegment->next1(SegmentType::ChordRest))) {
            Element* el = nextSegment->element(track);
            if (el &&  el->isChord())
                  break;
            }

      // look for the lyrics we are moving from; may be the current lyrics or a previous one
      // we are extending with several underscores
      Lyrics* fromLyrics = 0;
      while (segment) {
            ChordRest* cr = toChordRest(segment->element(track));
            if (cr) {
                  fromLyrics = cr->lyrics(verse, placement);
                  if (fromLyrics)
                        break;
                  }
            segment = segment->prev1(SegmentType::ChordRest);
            // if the segment has a rest in this track, stop going back
            Element* e = segment ? segment->element(track) : 0;
            if (e && !e->isChord())
                  break;
            }

      // one-chord melisma?
      // if still at melisma initial chord and there is a valid next chord (if not,
      // there will be no melisma anyway), set a temporary melisma duration
      if (fromLyrics == lyrics && nextSegment) {
            _score->startCmd();
            lyrics->undoChangeProperty(Pid::LYRIC_TICKS, Lyrics::TEMP_MELISMA_TICKS);
            _score->setLayoutAll();
            _score->endCmd();
            }

      if (nextSegment == 0) {
            _score->startCmd();
            if (fromLyrics) {
                  switch(fromLyrics->syllabic()) {
                        case Lyrics::Syllabic::SINGLE:
                        case Lyrics::Syllabic::END:
                              break;
                        default:
                              fromLyrics->undoChangeProperty(Pid::SYLLABIC, int(Lyrics::Syllabic::END));
                              break;
                        }
                  if (fromLyrics->segment()->tick() < endTick)
                        fromLyrics->undoChangeProperty(Pid::LYRIC_TICKS, endTick - fromLyrics->segment()->tick());
                  }
            // leave edit mode, select something (just for user feedback) and update to show extended melisam
            mscore->changeState(STATE_NORMAL);
            if (fromLyrics)
                  _score->select(fromLyrics, SelectType::SINGLE, 0);
            _score->setLayoutAll();
            _score->endCmd();
            return;
            }

      // if a place for a new lyrics has been found, create a lyrics there

      ChordRest* cr    = toChordRest(nextSegment->element(track));
      Lyrics* toLyrics = cr->lyrics(verse, placement);
      bool newLyrics   = (toLyrics == 0);
      if (!toLyrics) {
            toLyrics = new Lyrics(_score);
            toLyrics->setTrack(track);
            toLyrics->setParent(nextSegment->element(track));
            toLyrics->setNo(verse);
            toLyrics->setPlacement(placement);
            toLyrics->setPropertyFlags(Pid::PLACEMENT, pFlags);
            toLyrics->setSyllabic(Lyrics::Syllabic::SINGLE);
            }
      // as we arrived at toLyrics by an underscore, it cannot have syllabic dashes before
      else if (toLyrics->syllabic() == Lyrics::Syllabic::MIDDLE)
            toLyrics->undoChangeProperty(Pid::SYLLABIC, int(Lyrics::Syllabic::BEGIN));
      else if (toLyrics->syllabic() == Lyrics::Syllabic::END)
            toLyrics->undoChangeProperty(Pid::SYLLABIC, int(Lyrics::Syllabic::SINGLE));

      if (fromLyrics) {
            // as we moved away from fromLyrics by an underscore,
            // it can be isolated or terminal but cannot have dashes after
            switch(fromLyrics->syllabic()) {
                  case Lyrics::Syllabic::SINGLE:
                  case Lyrics::Syllabic::END:
                        break;
                  default:
                        fromLyrics->undoChangeProperty(Pid::SYLLABIC, int(Lyrics::Syllabic::END));
                        break;
//.........这里部分代码省略.........

void ScoreView::lyricsMinus()
      {
      Lyrics* lyrics   = toLyrics(editData.element);
      int track        = lyrics->track();
      Segment* segment = lyrics->segment();
      int verse        = lyrics->no();
      Placement placement = lyrics->placement();
      PropertyFlags pFlags = lyrics->propertyFlags(Pid::PLACEMENT);

      changeState(ViewState::NORMAL);

      // search next chord
      Segment* nextSegment = segment;
      while ((nextSegment = nextSegment->next1(SegmentType::ChordRest))) {
            Element* el = nextSegment->element(track);
            if (el &&  el->isChord())
                  break;
            }
      if (nextSegment == 0)
            return;

      // look for the lyrics we are moving from; may be the current lyrics or a previous one
      // we are extending with several dashes
      Lyrics* fromLyrics = 0;
      while (segment) {
            ChordRest* cr = toChordRest(segment->element(track));
            if (!cr) {
                  segment = segment->prev1(SegmentType::ChordRest);
                  continue;
                  }
            fromLyrics = cr->lyrics(verse, placement);
            if (fromLyrics)
                  break;
            segment = segment->prev1(SegmentType::ChordRest);
            }

      _score->startCmd();
      ChordRest* cr = toChordRest(nextSegment->element(track));
      Lyrics* toLyrics           = cr->lyrics(verse, placement);
      bool newLyrics = (toLyrics == 0);
      if (!toLyrics) {
            toLyrics = new Lyrics(_score);
            toLyrics->setTrack(track);
            toLyrics->setParent(nextSegment->element(track));
            toLyrics->setNo(verse);
            toLyrics->setPlacement(placement);
            toLyrics->setPropertyFlags(Pid::PLACEMENT, pFlags);
            toLyrics->setSyllabic(Lyrics::Syllabic::END);
            }
      else {
            // as we arrived at toLyrics by a dash, it cannot be initial or isolated
            if (toLyrics->syllabic() == Lyrics::Syllabic::BEGIN)
                  toLyrics->undoChangeProperty(Pid::SYLLABIC, int(Lyrics::Syllabic::MIDDLE));
            else if (toLyrics->syllabic() == Lyrics::Syllabic::SINGLE)
                  toLyrics->undoChangeProperty(Pid::SYLLABIC, int(Lyrics::Syllabic::END));
            }

      if (fromLyrics) {
            // as we moved away from fromLyrics by a dash,
            // it can have syll. dashes before and after but cannot be isolated or terminal
            switch(fromLyrics->syllabic()) {
                  case Lyrics::Syllabic::BEGIN:
                  case Lyrics::Syllabic::MIDDLE:
                        break;
                  case Lyrics::Syllabic::SINGLE:
                        fromLyrics->undoChangeProperty(Pid::SYLLABIC, int(Lyrics::Syllabic::BEGIN));
                        break;
                  case Lyrics::Syllabic::END:
                        fromLyrics->undoChangeProperty(Pid::SYLLABIC, int(Lyrics::Syllabic::MIDDLE));
                        break;
                  }
            // for the same reason, it cannot have a melisma
            fromLyrics->undoChangeProperty(Pid::LYRIC_TICKS, 0);
            }

      if (newLyrics)
            _score->undoAddElement(toLyrics);
      _score->endCmd();

      _score->select(toLyrics, SelectType::SINGLE, 0);
      startEdit(toLyrics, Grip::NO_GRIP);

      adjustCanvasPosition(toLyrics, false);
      TextCursor* cursor = Ms::toLyrics(editData.element)->cursor(editData);
      Ms::toLyrics(editData.element)->selectAll(cursor);
      _score->setLayoutAll();
      }

void MuseData::readNote(Part* part, const QString& s)
{
    //                       a  b   c  d  e  f  g
    static int table[7]  = { 9, 11, 0, 2, 4, 5, 7 };

    int step  = s[0].toLatin1() - 'A';
    int alter = 0;
    int octave = 0;
    for (int i = 1; i < 3; ++i) {
        if (s[i] == '#')
            alter += 1;
        else if (s[i] == 'f')
            alter -= 1;
        else if (s[i].isDigit()) {
            octave = s.mid(i,1).toInt();
            break;
        }
    }
    MScore::Direction dir = MScore::AUTO;
    if (s.size() >= 23) {
        if (s[22] == 'u')
            dir = MScore::UP;
        else if (s[22] == 'd')
            dir = MScore::DOWN;
    }

    int staffIdx = 0;
    if (s.size() >= 24) {
        if (s[23].isDigit())
            staffIdx = s.mid(23,1).toInt() - 1;
    }
    Staff* staff = part->staff(staffIdx);
    int gstaff   = staff->idx();

    int pitch = table[step] + alter + (octave + 1) * 12;
    if (pitch < 0)
        pitch = 0;
    if (pitch > 127)
        pitch = 127;
    int ticks = s.mid(5, 3).toInt();
    ticks     = (ticks * MScore::division + _division/2) / _division;
    int tick  = curTick;
    curTick  += ticks;

    Tuplet* tuplet = 0;
    if (s.size() >= 22) {
        int a = 1;
        int b = 1;
        if (s[19] != ' ') {
            a = s[19].toLatin1() - '0';
            if (a == 3 && s[20] != ':')
                b = 2;
            else {
                b = s[21].toLatin1() - '0';
            }
        }
        if (a == 3 && b == 2) {       // triplet
            if (chordRest && chordRest->tuplet() && ntuplet) {
                tuplet = chordRest->tuplet();
            }
            else {
                tuplet = new Tuplet(score);
                tuplet->setTrack(gstaff * VOICES);
                tuplet->setTick(tick);
                ntuplet = a;
                tuplet->setRatio(Fraction(a, b));
                measure->add(tuplet);
            }
        }
        else if (a == 1 && b == 1)
            ;
        else
            qDebug("unsupported tuple %d/%d", a, b);
    }

    Chord* chord = new Chord(score);
    chordRest = chord;
    chord->setTrack(gstaff * VOICES);
    chord->setStemDirection(dir);
    if (tuplet) {
        chord->setTuplet(tuplet);
        tuplet->add(chord);
        --ntuplet;
    }
    TDuration d;
    d.setVal(ticks);
    chord->setDurationType(d);

    Segment* segment = measure->getSegment(chord, tick);

    voice = 0;
    for (; voice < VOICES; ++voice) {
        Element* e = segment->element(gstaff * VOICES + voice);
        if (e == 0) {
            chord->setTrack(gstaff * VOICES + voice);
            segment->add(chord);
            break;
        }
    }
    if (voice == VOICES) {
//.........这里部分代码省略.........

void ScoreView::lyricsTab(bool back, bool end, bool moveOnly)
      {
      Lyrics* lyrics   = (Lyrics*)editObject;
      int track        = lyrics->track();
      Segment* segment = lyrics->segment();
      int verse        = lyrics->no();

      Segment* nextSegment = segment;
      if (back) {
            // search prev chord
            while ((nextSegment = nextSegment->prev1(Segment::Type::ChordRest))) {
                  Element* el = nextSegment->element(track);
                  if (el &&  el->type() == Element::Type::CHORD)
                        break;
                  }
            }
      else {
            // search next chord
            while ((nextSegment = nextSegment->next1(Segment::Type::ChordRest))) {
                  Element* el = nextSegment->element(track);
                  if (el &&  el->type() == Element::Type::CHORD)
                        break;
                  }
            }
      if (nextSegment == 0)
            return;

      endEdit();

      // search previous lyric
      Lyrics* oldLyrics = 0;
      if (!back) {
            while (segment) {
                  const QList<Lyrics*>* nll = segment->lyricsList(track);
                  if (nll) {
                        oldLyrics = nll->value(verse);
                        if (oldLyrics)
                              break;
                        }
                  segment = segment->prev1(Segment::Type::ChordRest);
                  }
            }

      const QList<Lyrics*>* ll = nextSegment->lyricsList(track);
      if (ll == 0) {
            qDebug("no next lyrics list: %s", nextSegment->element(track)->name());
            return;
            }
      lyrics = ll->value(verse);

      bool newLyrics = false;
      if (!lyrics) {
            lyrics = new Lyrics(_score);
            lyrics->setTrack(track);
            ChordRest* cr = static_cast<ChordRest*>(nextSegment->element(track));
            lyrics->setParent(cr);
            lyrics->setNo(verse);
            lyrics->setSyllabic(Lyrics::Syllabic::SINGLE);
            newLyrics = true;
            }

      _score->startCmd();

      if (oldLyrics && !moveOnly) {
            switch(lyrics->syllabic()) {
                  case Lyrics::Syllabic::SINGLE:
                  case Lyrics::Syllabic::BEGIN:
                        break;
                  case Lyrics::Syllabic::END:
                        lyrics->undoChangeProperty(P_ID::SYLLABIC, int(Lyrics::Syllabic::SINGLE));
                        break;
                  case Lyrics::Syllabic::MIDDLE:
                        lyrics->undoChangeProperty(P_ID::SYLLABIC, int(Lyrics::Syllabic::BEGIN));
                        break;
                  }
            switch(oldLyrics->syllabic()) {
                  case Lyrics::Syllabic::SINGLE:
                  case Lyrics::Syllabic::END:
                        break;
                  case Lyrics::Syllabic::BEGIN:
                        oldLyrics->undoChangeProperty(P_ID::SYLLABIC, int(Lyrics::Syllabic::SINGLE));
                        break;
                  case Lyrics::Syllabic::MIDDLE:
                        oldLyrics->undoChangeProperty(P_ID::SYLLABIC, int(Lyrics::Syllabic::END));
                        break;
                  }
            }

      if (newLyrics)
          _score->undoAddElement(lyrics);

      _score->select(lyrics, SelectType::SINGLE, 0);
      startEdit(lyrics, -1);
      mscore->changeState(mscoreState());

      adjustCanvasPosition(lyrics, false);
      if (end)
            ((Lyrics*)editObject)->moveCursorToEnd();
      else
            ((Lyrics*)editObject)->moveCursorToStart();
//.........这里部分代码省略.........

void ScoreView::lyricsUnderscore()
      {
      Lyrics* lyrics   = static_cast<Lyrics*>(editObject);
      int track        = lyrics->track();
      Segment* segment = lyrics->segment();
      int verse        = lyrics->no();
      int endTick      = segment->tick();

      endEdit();

      // search next chord
      Segment* nextSegment = segment;
      while ((nextSegment = nextSegment->next1(Segment::Type::ChordRest))) {
            Element* el = nextSegment->element(track);
            if (el &&  el->type() == Element::Type::CHORD)
                  break;
            }

      // search previous lyric
      Lyrics* oldLyrics = 0;
      while (segment) {
            const QList<Lyrics*>* nll = segment->lyricsList(track);
            if (nll) {
                  oldLyrics = nll->value(verse);
                  if (oldLyrics)
                        break;
                  }
            segment = segment->prev1(Segment::Type::ChordRest);
            }

      if (nextSegment == 0) {
            if (oldLyrics) {
                  switch(oldLyrics->syllabic()) {
                        case Lyrics::Syllabic::SINGLE:
                        case Lyrics::Syllabic::END:
                              break;
                        default:
                              oldLyrics->undoChangeProperty(P_ID::SYLLABIC, int(Lyrics::Syllabic::END));
                              break;
                        }
                  if (oldLyrics->segment()->tick() < endTick)
                        oldLyrics->undoChangeProperty(P_ID::LYRIC_TICKS, endTick - oldLyrics->segment()->tick());
                  }
            return;
            }
      _score->startCmd();

      const QList<Lyrics*>* ll = nextSegment->lyricsList(track);
      lyrics         = ll->value(verse);
      bool newLyrics = (lyrics == 0);
      if (!lyrics) {
            lyrics = new Lyrics(_score);
            lyrics->setTrack(track);
            lyrics->setParent(nextSegment->element(track));
            lyrics->setNo(verse);
            lyrics->setSyllabic(Lyrics::Syllabic::SINGLE);
            }
      else
            lyrics->undoChangeProperty(P_ID::SYLLABIC, int(Lyrics::Syllabic::SINGLE));

      if (oldLyrics) {
            switch(oldLyrics->syllabic()) {
                  case Lyrics::Syllabic::SINGLE:
                  case Lyrics::Syllabic::END:
                        break;
                  default:
                        oldLyrics->undoChangeProperty(P_ID::SYLLABIC, int(Lyrics::Syllabic::END));
                        break;
                  }
            if (oldLyrics->segment()->tick() < endTick)
                  oldLyrics->undoChangeProperty(P_ID::LYRIC_TICKS, endTick - oldLyrics->segment()->tick());
            }
      if (newLyrics)
            _score->undoAddElement(lyrics);

      _score->select(lyrics, SelectType::SINGLE, 0);
      startEdit(lyrics, -1);
      mscore->changeState(mscoreState());

      adjustCanvasPosition(lyrics, false);
      ((Lyrics*)editObject)->moveCursorToEnd();

      _score->setLayoutAll(true);
      _score->update();
      }

void ScoreView::lyricsTab(bool back, bool end, bool moveOnly)
      {
      Lyrics* lyrics   = (Lyrics*)editObject;
      int track        = lyrics->track();
      Segment* segment = lyrics->segment();
      int verse        = lyrics->no();
      Element::Placement placement = lyrics->placement();

      Segment* nextSegment = segment;
      if (back) {
            // search prev chord
            while ((nextSegment = nextSegment->prev1(Segment::Type::ChordRest))) {
                  Element* el = nextSegment->element(track);
                  if (el &&  el->type() == ElementType::CHORD)
                        break;
                  }
            }
      else {
            // search next chord
            while ((nextSegment = nextSegment->next1(Segment::Type::ChordRest))) {
                  Element* el = nextSegment->element(track);
                  if (el &&  el->type() == ElementType::CHORD)
                        break;
                  }
            }
      if (nextSegment == 0)
            return;

      endEdit();

      // look for the lyrics we are moving from; may be the current lyrics or a previous one
      // if we are skipping several chords with spaces
      Lyrics* fromLyrics = 0;
      if (!back) {
            while (segment) {
                  ChordRest* cr = toChordRest(segment->element(track));
                  if (cr) {
                        fromLyrics = cr->lyrics(verse, placement);
                        if (fromLyrics)
                              break;
                        }
                  segment = segment->prev1(Segment::Type::ChordRest);
                  }
            }

      ChordRest* cr = toChordRest(nextSegment->element(track));
      if (!cr) {
            qDebug("no next lyrics list: %s", nextSegment->element(track)->name());
            return;
            }
      Lyrics* toLyrics = cr->lyrics(verse, placement);

      bool newLyrics = false;
      if (!toLyrics) {
            toLyrics = new Lyrics(_score);
            toLyrics->setTrack(track);
            ChordRest* cr = static_cast<ChordRest*>(nextSegment->element(track));
            toLyrics->setParent(cr);
            toLyrics->setNo(verse);
            toLyrics->setPlacement(placement);
            toLyrics->setSyllabic(Lyrics::Syllabic::SINGLE);
            newLyrics = true;
            }

      _score->startCmd();

      if (fromLyrics && !moveOnly) {
            switch(toLyrics->syllabic()) {
                  // as we arrived at toLyrics by a [Space], it can be the beginning
                  // of a multi-syllable, but cannot have syllabic dashes before
                  case Lyrics::Syllabic::SINGLE:
                  case Lyrics::Syllabic::BEGIN:
                        break;
                  case Lyrics::Syllabic::END:
                        toLyrics->undoChangeProperty(P_ID::SYLLABIC, int(Lyrics::Syllabic::SINGLE));
                        break;
                  case Lyrics::Syllabic::MIDDLE:
                        toLyrics->undoChangeProperty(P_ID::SYLLABIC, int(Lyrics::Syllabic::BEGIN));
                        break;
                  }
            // as we moved away from fromLyrics by a [Space], it can be
            // the end of a multi-syllable, but cannot have syllabic dashes after
            switch(fromLyrics->syllabic()) {
                  case Lyrics::Syllabic::SINGLE:
                  case Lyrics::Syllabic::END:
                        break;
                  case Lyrics::Syllabic::BEGIN:
                        fromLyrics->undoChangeProperty(P_ID::SYLLABIC, int(Lyrics::Syllabic::SINGLE));
                        break;
                  case Lyrics::Syllabic::MIDDLE:
                        fromLyrics->undoChangeProperty(P_ID::SYLLABIC, int(Lyrics::Syllabic::END));
                        break;
                  }
            // for the same reason, it cannot have a melisma
            fromLyrics->undoChangeProperty(P_ID::LYRIC_TICKS, 0);
            }

      if (newLyrics)
          _score->undoAddElement(toLyrics);

//.........这里部分代码省略.........

void ScoreView::lyricsMinus()
      {
      Lyrics* lyrics   = (Lyrics*)editObject;
      int track        = lyrics->track();
      int staffIdx     = lyrics->staffIdx();
      Segment* segment = lyrics->segment();
      int verse        = lyrics->no();

      endEdit();

      // search next chord
      Segment* nextSegment = segment;
      while ((nextSegment = nextSegment->next1(Segment::SegChordRest | Segment::SegGrace))) {
            Element* el = nextSegment->element(track);
            if (el &&  el->type() == Element::CHORD)
                  break;
            }
      if (nextSegment == 0) {
            return;
            }

      // search previous lyric
      Lyrics* oldLyrics = 0;
      while (segment) {
            const QList<Lyrics*>* nll = segment->lyricsList(staffIdx);
            if (!nll) {
                  segment = segment->prev1(Segment::SegChordRest | Segment::SegGrace);
                  continue;
                  }
            oldLyrics = nll->value(verse);
            if (oldLyrics)
                  break;
            segment = segment->prev1(Segment::SegChordRest | Segment::SegGrace);
            }

      _score->startCmd();

      const QList<Lyrics*>* ll = nextSegment->lyricsList(staffIdx);
      lyrics         = ll->value(verse);
      bool newLyrics = (lyrics == 0);
      if (!lyrics) {
            lyrics = new Lyrics(_score);
            lyrics->setTrack(track);
            lyrics->setParent(nextSegment->element(track));
            lyrics->setNo(verse);
            lyrics->setSyllabic(Lyrics::END);
            }

      if(lyrics->syllabic()==Lyrics::BEGIN) {
            lyrics->setSyllabic(Lyrics::MIDDLE);
            }
      else if(lyrics->syllabic()==Lyrics::SINGLE) {
            lyrics->setSyllabic(Lyrics::END);
            }

      if (oldLyrics) {
            switch(oldLyrics->syllabic()) {
                  case Lyrics::BEGIN:
                  case Lyrics::MIDDLE:
                        break;
                  case Lyrics::SINGLE:
                        oldLyrics->setSyllabic(Lyrics::BEGIN);
                        break;
                  case Lyrics::END:
                        oldLyrics->setSyllabic(Lyrics::MIDDLE);
                        break;
                  }
            }

      if(newLyrics)
          _score->undoAddElement(lyrics);

      _score->select(lyrics, SELECT_SINGLE, 0);
      startEdit(lyrics, -1);
      mscore->changeState(mscoreState());

      adjustCanvasPosition(lyrics, false);
      ((Lyrics*)editObject)->moveCursorToEnd();

      _score->setLayoutAll(true);
      _score->end2();
      _score->end1();
      }