C++ Lyrics类代码示例

void ChordRest::add(Element* e)
      {
      e->setParent(this);
      e->setTrack(track());
      switch(e->type()) {
            case Element::Type::ARTICULATION:
                  {
                  Articulation* a = static_cast<Articulation*>(e);
                  _articulations.push_back(a);
                  if (a->timeStretch() != 1.0)
                        score()->fixTicks();          // update tempo map
                  }
                  break;
            case Element::Type::LYRICS:
                  {
                  Lyrics* l = static_cast<Lyrics*>(e);
                  int size = _lyricsList.size();
                  if (l->no() >= size) {
                        for (int i = size-1; i < l->no(); ++i)
                              _lyricsList.append(0);
                        }
                  _lyricsList[l->no()] = l;
                  }
                  break;
            default:
                  qFatal("ChordRest::add: unknown element %s", e->name());
                  break;
            }
      }

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   = (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::lyricsEndEdit()
      {
      Lyrics* lyrics = toLyrics(editData.element);

      // if not empty, make sure this new lyrics does not fall in the middle
      // of an existing melisma from a previous lyrics; in case, shorten it
      int verse   = lyrics->no();
      Placement placement = lyrics->placement();
      int track   = lyrics->track();

      // search previous lyric
      Lyrics*  prevLyrics  = 0;
      Segment* prevSegment = lyrics->segment()->prev1(SegmentType::ChordRest);
      Segment* segment     = prevSegment;
      while (segment) {
            ChordRest* cr = toChordRest(segment->element(track));
            if (cr) {
                  prevLyrics = cr->lyrics(verse, placement);
                  if (prevLyrics)
                        break;
                  }
            segment = segment->prev1(SegmentType::ChordRest);
            }
      if (prevLyrics && prevLyrics->syllabic() == Lyrics::Syllabic::END) {
            int endTick = prevSegment->tick();      // a prev. melisma should not go beyond this segment
            if (prevLyrics->endTick() >= endTick)
                  prevLyrics->undoChangeProperty(Pid::LYRIC_TICKS, endTick - prevLyrics->segment()->tick());
            }
      }

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();

      if (placement == Placement::ABOVE)
            up = !up;
      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);
            _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 InspectorLyric::valueChanged(int idx)
      {
      if (iList[idx].t == P_ID::VERSE) {
            int val    = getValue(iList[idx]).toInt();
            Lyrics* l  = toLyrics(inspector->element());
            printf("value changed %d  old %d\n", val, l->no());
            Lyrics* nl = l->chordRest()->lyrics(val, l->placement());
            if (nl) {
                  printf("   move away %d -> %d\n", nl->no(), l->no());
                  nl->undoChangeProperty(P_ID::VERSE, l->no());
                  }
            }
      InspectorBase::valueChanged(idx);
      }

void InspectorLyric::valueChanged(int idx)
      {
      if (iList[idx].t == Pid::VERSE) {
            int val    = getValue(iList[idx]).toInt();
            Lyrics* l  = toLyrics(inspector->element());
            Lyrics* nl = l->chordRest()->lyrics(val, l->placement());
            if (nl) {
                  nl->undoChangeProperty(Pid::VERSE, l->no());
                  }
            }
      InspectorBase::valueChanged(idx);
      }

void TuLyrics::construct()
{
    Lyrics *pLyrics;

    /* Step 1: Default constructor. */
    try
    {
        pLyrics = new Lyrics();
        QVERIFY(pLyrics != NULL);
        QVERIFY(pLyrics->sections().isEmpty());
        QCOMPARE(pLyrics->title(), QString());
        delete pLyrics;
    }
    catch (LyricsSection::TextParseException &)
    {
        QFAIL("Unexpected TextParseException thrown");
    }

    Lyrics::LyricsSectionList sectionList;
    sectionList.append(LyricsSection("test[b]1[/b]", "1", LyricsSection::NoLineWrap));
    QVERIFY(sectionList.size() == 1);
    
    /* Step 2: Parametrised constructor. */
    try
    {

        pLyrics = new Lyrics(123, sectionList, "test2");

        QCOMPARE(pLyrics->id(), 123u);
        QCOMPARE(pLyrics->sections()[0].text(), QString("test[b]1[/b]"));
        QCOMPARE(pLyrics->title(), QString("test2"));
        
        delete pLyrics;
    }
    catch (LyricsSection::TextParseException &)
    {
        QFAIL("Unexpected TextParseException thrown");
    }
}

int GuitarPro5::readBeat(int tick, int voice, Measure* measure, int staffIdx, Tuplet** tuplets, bool /*mixChange*/)
      {
      uchar beatBits = readUChar();
      bool dotted    = beatBits & BEAT_DOTTED;

      slide = -1;
      int track = staffIdx * VOICES + voice;
      if (slides.contains(track))
            slide = slides.take(track);

      int pause = -1;
      if (beatBits & BEAT_PAUSE)
            pause = readUChar();

      // readDuration
      int len   = readChar();
      int tuple = 0;
      if (beatBits & BEAT_TUPLET)
            tuple = readInt();

      Segment* segment = measure->getSegment(Segment::Type::ChordRest, tick);
      if (beatBits & BEAT_CHORD) {
            int numStrings = score->staff(staffIdx)->part()->instr()->stringData()->strings();
            skip(17);
            QString name = readPascalString(21);
            skip(4);
            // no header to be read in the GP5 format - default to true.
            readChord(segment, staffIdx * VOICES, numStrings, name, true);
            skip(32);
            }
      Lyrics* lyrics = 0;
      if (beatBits & BEAT_LYRICS) {
            QString txt = readDelphiString();
            lyrics = new Lyrics(score);
            lyrics->setText(txt);
            }
      gpLyrics.beatCounter++;
      if (gpLyrics.beatCounter >= gpLyrics.fromBeat && gpLyrics.lyricTrack == staffIdx+1) {
            int index = gpLyrics.beatCounter - gpLyrics.fromBeat;
            if (index < gpLyrics.lyrics.size()) {
                  lyrics = new Lyrics(score);
                  lyrics->setText(gpLyrics.lyrics[index]);
                  }
            }
      int beatEffects = 0;
      if (beatBits & BEAT_EFFECTS)
            beatEffects = readBeatEffects(track, segment);

      if (beatBits & BEAT_MIX_CHANGE)
            readMixChange(measure);

      int strings = readUChar();   // used strings mask

      Fraction l    = len2fraction(len);

      // Some beat effects could add a Chord before this
      ChordRest* cr = segment->cr(track);
      if (voice != 0 && pause == 0 && strings == 0)
            cr = 0;
      else {
            if (strings == 0) {
                  if (cr) {
                        segment->remove(cr);
                        delete cr;
                        cr = 0;
                        }
                  cr = new Rest(score);
                  }
            else  {
                  if (!cr)
                        cr = new Chord(score);
                  }
            cr->setTrack(track);

            TDuration d(l);
            d.setDots(dotted ? 1 : 0);

            if (dotted)
                  l = l + (l/2);

            if (tuple) {
                  Tuplet* tuplet = tuplets[staffIdx * 2 + voice];
                  if ((tuplet == 0) || (tuplet->elementsDuration() == tuplet->baseLen().fraction() * tuplet->ratio().numerator())) {
                        tuplet = new Tuplet(score);
                        // int track = staffIdx * 2 + voice;
                        tuplets[staffIdx * 2 + voice] = tuplet;
                        tuplet->setTrack(cr->track());
                        setTuplet(tuplet, tuple);
                        tuplet->setParent(measure);
                        }
                  tuplet->setTrack(cr->track());
                  tuplet->setBaseLen(l);
                  tuplet->setDuration(l * tuplet->ratio().denominator());
                  cr->setTuplet(tuplet);
                  tuplet->add(cr);
                  }

            cr->setDuration(l);
            if (cr->type() == Element::Type::REST && (pause == 0 || l == measure->len()))
                  cr->setDurationType(TDuration::DurationType::V_MEASURE);
//.........这里部分代码省略.........

void LyricsLineSegment::layout()
      {
      bool        endOfSystem       = false;
      bool        isEndMelisma      = lyricsLine()->lyrics()->ticks() > 0;
      Lyrics*     lyr               = 0;
      Lyrics*     nextLyr           = 0;
      qreal       fromX             = 0;
      qreal       toX               = 0;             // start and end point of intra-lyrics room
      qreal       sp                = spatium();
      System*     sys;

      if (lyricsLine()->ticks() <= 0) {   // if no span,
            _numOfDashes = 0;             // nothing to draw
            return;                       // and do nothing
            }

      // HORIZONTAL POSITION
      // A) if line precedes a syllable, advance line end to right before the next syllable text
      // if not a melisma and there is a next syllable;
      if (!isEndMelisma && lyricsLine()->nextLyrics() && isSingleEndType()) {
            lyr         = nextLyr = lyricsLine()->nextLyrics();
            sys         = lyr->segment()->system();
            endOfSystem = (sys != system());
            // if next lyrics is on a different system, this line segment is at the end of its system:
            // do not adjust for next lyrics position
            if (!endOfSystem) {
                  qreal lyrX        = lyr->bbox().x();
                  qreal lyrXp       = lyr->pagePos().x();
                  qreal sysXp       = sys->pagePos().x();
                  toX               = lyrXp - sysXp + lyrX;       // syst.rel. X pos.
                  qreal offsetX     = toX - pos().x() - pos2().x() - score()->styleP(Sid::lyricsDashPad);
                  //                    delta from current end pos.| ending padding
                  rxpos2()          += offsetX;
                  }
            }
      // B) if line follows a syllable, advance line start to after the syllable text
      lyr  = lyricsLine()->lyrics();
      sys  = lyr->segment()->system();
      if (sys && isSingleBeginType()) {
            qreal lyrX        = lyr->bbox().x();
            qreal lyrXp       = lyr->pagePos().x();
            qreal lyrW        = lyr->bbox().width();
            qreal sysXp       = sys->pagePos().x();
            fromX             = lyrXp - sysXp + lyrX + lyrW;
            //               syst.rel. X pos. | lyr.advance
            qreal offsetX     = fromX - pos().x();
            offsetX           += score()->styleP(isEndMelisma ? Sid::lyricsMelismaPad : Sid::lyricsDashPad);

            //               delta from curr.pos. | add initial padding
            rxpos()           += offsetX;
            rxpos2()          -= offsetX;
            }

      // VERTICAL POSITION: at the base line of the syllable text
      if (!isEndType())
            rypos() = lyr->ipos().y();
      else {
            // use Y position of *next* syllable if there is one on same system
            Lyrics* nextLyr = searchNextLyrics(lyr->segment(), lyr->staffIdx(), lyr->no(), lyr->placement());
            if (nextLyr && nextLyr->segment()->system() == system())
                  rypos() = nextLyr->y();
            else
                  rypos() = lyr->y();
            }

      // MELISMA vs. DASHES
      if (isEndMelisma) {                 // melisma
            _numOfDashes = 1;
            rypos()      -= lyricsLine()->lineWidth() * .5; // let the line 'sit on' the base line
            qreal offsetX = score()->styleP(Sid::minNoteDistance) * mag();
            // if final segment, extend slightly after the chord, otherwise shorten it
            rxpos2() += (isBeginType() || isEndType()) ? -offsetX : +offsetX;
            }
      else {                              // dash(es)
            // set conventional dash Y pos
            rypos() -= MScore::pixelRatio * lyr->fontMetrics().xHeight() * score()->styleD(Sid::lyricsDashYposRatio);
            _dashLength = score()->styleP(Sid::lyricsDashMaxLength) * mag();  // and dash length
            qreal len         = pos2().x();
            qreal minDashLen  = score()->styleS(Sid::lyricsDashMinLength).val() * sp;
            qreal maxDashDist = score()->styleS(Sid::lyricsDashMaxDistance).val() * sp;
            if (len < minDashLen) {                                           // if no room for a dash
                  // if at end of system or dash is forced
                  if (endOfSystem || score()->styleB(Sid::lyricsDashForce)) {
                        rxpos2()          = minDashLen;                       //     draw minimal dash
                        _numOfDashes      = 1;
                        _dashLength       = minDashLen;
                        }
                  else                                                        //   if within system or dash not forced
                        _numOfDashes = 0;                                     //     draw no dash
                  }
            else if (len < (maxDashDist * 2.0)) {                           // if no room for two dashes
                  _numOfDashes = 1;                                           //    draw one dash
                  if (_dashLength > len)                                      // if no room for a full dash
                        _dashLength = len;                                    //    shorten it
                  }
            else
                  _numOfDashes = len / (maxDashDist);                         // draw several dashes

            // adjust next lyrics horiz. position if too little a space forced to skip the dash
            if (_numOfDashes == 0 && nextLyr != nullptr && len > 0)
//.........这里部分代码省略.........

void ScoreView::lyricsEndEdit()
      {
      Lyrics* lyrics = (Lyrics*)editObject;
      int endTick    = lyrics->segment()->tick();

      // search previous lyric:
      int verse    = lyrics->no();
      int staffIdx = lyrics->staffIdx();

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

//      if (lyrics->isEmpty() && origL->isEmpty())
      if (lyrics->isEmpty())
            lyrics->parent()->remove(lyrics);
      else {
            if (oldLyrics && oldLyrics->syllabic() == Lyrics::END) {
                  if (oldLyrics->endTick() >= endTick)
                        oldLyrics->setTicks(0);
                  }
            }
      }

 FXint run() {
   Lyrics lyrics;
   lyrics.fetch(track);
   return 0;
   }

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::lyricsEndEdit()
      {
      Lyrics* lyrics = static_cast<Lyrics*>(editObject);
      int endTick    = lyrics->segment()->tick();

      // search previous lyric:
      int verse = lyrics->no();
      int track = lyrics->track();

      // search previous lyric
      Lyrics* oldLyrics = 0;
      Segment* segment  = lyrics->segment();
      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 (lyrics->isEmpty())
            lyrics->parent()->remove(lyrics);
      else {
            if (oldLyrics && oldLyrics->syllabic() == Lyrics::Syllabic::END) {
                  if (oldLyrics->endTick() >= endTick)
                        oldLyrics->undoChangeProperty(P_ID::LYRIC_TICKS, 0);
                  }
            }
      }

//.........这里部分代码省略.........
            closeSlur(1, tick, staff, voice);
        else if (an[i] == '{')
            openSlur(2, tick, staff, voice);
        else if (an[i] == '}')
            closeSlur(2, tick, staff, voice);
        else if (an[i] == 'z')
            openSlur(3, tick, staff, voice);
        else if (an[i] == 'x')
            closeSlur(3, tick, staff, voice);
        else if (an[i] == '.') {
            Articulation* atr = new Articulation(score);
            atr->setArticulationType(Articulation_Staccato);
            chord->add(atr);
        }
        else if (an[i] == '_') {
            Articulation* atr = new Articulation(score);
            atr->setArticulationType(Articulation_Tenuto);
            chord->add(atr);
        }
        else if (an[i] == 'v') {
            Articulation* atr = new Articulation(score);
            atr->setArticulationType(Articulation_Upbow);
            chord->add(atr);
        }
        else if (an[i] == 'n') {
            Articulation* atr = new Articulation(score);
            atr->setArticulationType(Articulation_Downbow);
            chord->add(atr);
        }
        else if (an[i] == 't') {
            Articulation* atr = new Articulation(score);
            atr->setArticulationType(Articulation_Trill);
            chord->add(atr);
        }
        else if (an[i] == 'F') {
            Articulation* atr = new Articulation(score);
            atr->setUp(true);
            atr->setArticulationType(Articulation_Fermata);
            chord->add(atr);
        }
        else if (an[i] == 'E') {
            Articulation* atr = new Articulation(score);
            atr->setUp(false);
            atr->setArticulationType(Articulation_Fermata);
            chord->add(atr);
        }
        else if (an[i] == 'O') {
            // Articulation* atr = new Articulation(score);
            // atr->setArticulationType(Articulation_Downbow);
            // chord->add(atr);
            qDebug("%06d: open string '%c' not implemented", tick, an[i].toLatin1());
        }
        else if (an[i] == '&') {
            // skip editorial level
            if (i <= an.size() && an[i+1].isDigit())
                ++i;
        }
        else if (an[i] == 'p')
            dynamics += "p";
        else if (an[i] == 'm')
            dynamics += "m";
        else if (an[i] == 'f')
            dynamics += "f";
        else if (an[i] == '-')        // tie
            ;
        else if (an[i] == '*')        // start tuplet
            ;
        else if (an[i] == '!')        // stop tuplet
            ;
        else if (an[i] == '+')        // cautionary accidental
            ;
        else if (an[i] == 'X')        // ???
            ;
        else if (an[i] == ' ')
            ;
        else {
            qDebug("%06d: notation '%c' not implemented", tick, an[i].toLatin1());
        }
    }
    if (!dynamics.isEmpty()) {
        Dynamic* dyn = new Dynamic(score);
        dyn->setDynamicType(dynamics);
        dyn->setTrack(gstaff * VOICES);
        Segment* s = measure->getSegment(Segment::SegChordRest, tick);
        s->add(dyn);
    }

    QString txt = s.mid(43, 36);
    if (!txt.isEmpty()) {
        QStringList sl = txt.split("|");
        int no = 0;
        foreach(QString w, sl) {
            w = diacritical(w);
            Lyrics* l = new Lyrics(score);
            l->setText(w);
            l->setNo(no++);
            l->setTrack(gstaff * VOICES);
            Segment* segment = measure->tick2segment(tick);
            segment->add(l);
        }