C++ SysStaff类代码示例

SysStaff* System::insertStaff(int idx)
      {
      SysStaff* staff = new SysStaff;
      if (idx) {
            // HACK: guess position
            staff->bbox().setY(_staves[idx-1]->y() + 6 * spatium());
            }
      _staves.insert(idx, staff);
      return staff;
      }

void ContinuousPanel::paint(const QRect&, QPainter& painter)
      {
      qreal _offsetPanel = 0;
      qreal _y = 0;
      qreal _oldWidth = 0;        // The last final panel width
      qreal _newWidth = 0;        // New panel width
      qreal _height = 0;
      qreal _leftMarginTotal = 0; // Sum of all elments left margin
      qreal _panelRightPadding = 5;  // Extra space for the panel after last element

      Measure* measure = _score->firstMeasure();

      if (!_active || !measure) {
            _visible = false;
            return;
            }

      if (measure->mmRest()) {
            measure = measure->mmRest();
            }

      System* system   = measure->system();
      if (system == 0) {
            _visible = false;
            return;
            }

      Segment* s      = measure->first();
      double _spatium = _score->spatium();
      if (_width <= 0)
            _width  = s->x();

      //
      // Set panel height for whole system
      //
      _height = 6 * _spatium;
      _y = system->staffYpage(0) + system->page()->pos().y();
      double y2 = 0.0;
      for (int i = 0; i < _score->nstaves(); ++i) {
            SysStaff* ss = system->staff(i);
            if (!ss->show() || !_score->staff(i)->show())
                  continue;
            y2 = ss->y() + ss->bbox().height();
            }
      _height += y2 + 6*_spatium;
      _y -= 6 * _spatium;

      //
      // Check elements at current panel position
      //
      _offsetPanel = -(_sv->xoffset()) / _sv->mag();
      _rect        = QRect(_offsetPanel + _width, _y, 1, _height);
      Page* page   = _score->pages().front();
      QList<Element*> el = page->items(_rect);
      if (el.empty()) {
            _visible = false;
            return;
            }
      qStableSort(el.begin(), el.end(), elementLessThan);

      const Measure*_currentMeasure = 0;
      for (const Element* e : el) {
            e->itemDiscovered = 0;
            if (!e->visible() && !_score->showInvisible())
                  continue;

            if (e->isMeasure()) {
                  _currentMeasure = toMeasure(e);
                  break;
                  }
            }
      if (!_currentMeasure)
            return;

      // Don't show panel if staff names are visible
      if (_currentMeasure == _score->firstMeasure() && _sv->toPhysical(_currentMeasure->canvasPos()).x() > 0) {
            _visible = false;
            return;
            }

      qreal _xPosMeasure       = _currentMeasure->canvasX();
      qreal _measureWidth      = _currentMeasure->width();
      int tick                 = _currentMeasure->tick();
      Fraction _currentTimeSig = _currentMeasure->timesig();
      //qDebug() << "_sv->xoffset()=" <<_sv->xoffset() << " _sv->mag()="<< _sv->mag() <<" s->x=" << s->x() << " width=" << _width << " currentMeasure=" << _currentMeasure->x() << " _xPosMeasure=" << _xPosMeasure;

      //---------------------------------------------------------
      //   findElementWidths
      //      determines the max width for each element types
      //---------------------------------------------------------

      // The first pass serves to get the maximum width for each elements

      qreal lineWidthName = 0;
      qreal _widthClef    = 0;
      qreal _widthKeySig  = 0;
      qreal _widthTimeSig = 0;
      qreal _xPosTimeSig  = 0;

      for (const Element* e : el) {
//.........这里部分代码省略.........

void Fingering::layout()
      {
      if (parent()) {
            Fraction tick = parent()->tick();
            const Staff* st = staff();
            if (st && st->isTabStaff(tick) && !st->staffType(tick)->showTabFingering()) {
                  setbbox(QRectF());
                  return;
                  }
            }

      TextBase::layout();
      rypos() = 0.0;    // handle placement below

      if (autoplace() && note()) {
            Note* n      = note();
            Chord* chord = n->chord();
            bool voices  = chord->measure()->hasVoices(chord->staffIdx());
            bool tight   = voices && chord->notes().size() == 1 && !chord->beam() && tid() != Tid::STRING_NUMBER;

            qreal headWidth = n->bboxRightPos();

            // update offset after drag
            qreal rebase = 0.0;
            if (offsetChanged() != OffsetChange::NONE)
                  rebase = rebaseOffset();

            // temporarily exclude self from chord shape
            setAutoplace(false);

            if (layoutType() == ElementType::CHORD) {
                  Stem* stem = chord->stem();
                  Segment* s = chord->segment();
                  Measure* m = s->measure();
                  qreal sp = spatium();
                  qreal md = minDistance().val() * sp;
                  SysStaff* ss = m->system()->staff(chord->vStaffIdx());
                  Staff* vStaff = chord->staff();     // TODO: use current height at tick

                  if (n->mirror())
                        rxpos() -= n->ipos().x();
                  rxpos() += headWidth * .5;
                  if (placeAbove()) {
                        if (tight) {
                              if (chord->stem())
                                    rxpos() -= 0.8 * sp;
                              rypos() -= 1.5 * sp;
                              }
                        else {
                              QRectF r = bbox().translated(m->pos() + s->pos() + chord->pos() + n->pos() + pos());
                              SkylineLine sk(false);
                              sk.add(r.x(), r.bottom(), r.width());
                              qreal d = sk.minDistance(ss->skyline().north());
                              qreal yd = 0.0;
                              if (d > 0.0 && isStyled(Pid::MIN_DISTANCE))
                                    yd -= d + height() * .25;
                              // force extra space above staff & chord (but not other fingerings)
                              qreal top;
                              if (chord->up() && chord->beam() && stem) {
                                    top = stem->y() + stem->bbox().top();
                                    }
                              else {
                                    Note* un = chord->upNote();
                                    top = qMin(0.0, un->y() + un->bbox().top());
                                    }
                              top -= md;
                              qreal diff = (bbox().bottom() + ipos().y() + yd + n->y()) - top;
                              if (diff > 0.0)
                                    yd -= diff;
                              if (offsetChanged() != OffsetChange::NONE) {
                                    // user moved element within the skyline
                                    // we may need to adjust minDistance, yd, and/or offset
                                    bool inStaff = placeAbove() ? r.bottom() + rebase > 0.0 : r.top() + rebase < staff()->height();
                                    rebaseMinDistance(md, yd, sp, rebase, inStaff);
                                    }
                              rypos() += yd;
                              }
                        }
                  else {
                        if (tight) {
                              if (chord->stem())
                                    rxpos() += 0.8 * sp;
                              rypos() += 1.5 * sp;
                              }
                        else {
                              QRectF r = bbox().translated(m->pos() + s->pos() + chord->pos() + n->pos() + pos());
                              SkylineLine sk(true);
                              sk.add(r.x(), r.top(), r.width());
                              qreal d = ss->skyline().south().minDistance(sk);
                              qreal yd = 0.0;
                              if (d > 0.0 && isStyled(Pid::MIN_DISTANCE))
                                    yd += d + height() * .25;
                              // force extra space below staff & chord (but not other fingerings)
                              qreal bottom;
                              if (!chord->up() && chord->beam() && stem) {
                                    bottom = stem->y() + stem->bbox().bottom();
                                    }
                              else {
                                    Note* dn = chord->downNote();
                                    bottom = qMax(vStaff->height(), dn->y() + dn->bbox().bottom());
//.........这里部分代码省略.........

void System::layout2()
      {
      VBox* b = vbox();
      if (b) {
            b->layout();
            setbbox(b->bbox());
            return;
            }

      setPos(0.0, 0.0);
      QList<std::pair<int,SysStaff*>> visibleStaves;

      int firstStaffIdx        = -1;
      int lastStaffIdx         = 0;
      int firstStaffInitialIdx = -1;
      int lastStaffInitialIdx  = 0;
      Measure* fm              = firstMeasure();

      for (int i = 0; i < _staves.size(); ++i) {
            Staff*    s  = score()->staff(i);
            SysStaff* ss = _staves[i];
            if (s->show() && ss->show()) {
                  visibleStaves.append(std::pair<int,SysStaff*>(i, ss));
                  if (firstStaffIdx == -1)
                        firstStaffIdx = i;
                  if (i > lastStaffIdx)
                        lastStaffIdx = i;
                  if (fm && fm->visible(i)) {
                        if (firstStaffInitialIdx == -1)
                              firstStaffInitialIdx = i;
                        lastStaffInitialIdx = i;
                        }
                  }
            else {
                  ss->setbbox(QRectF());  // already done in layout() ?
                  }
            }
      if (firstStaffIdx == -1)
            firstStaffIdx = 0;
      if (firstStaffInitialIdx == -1)
            firstStaffInitialIdx = 0;

      qreal _spatium            = spatium();
      qreal y                   = 0.0;
      qreal minVerticalDistance = score()->styleP(StyleIdx::minVerticalDistance);
      qreal staffDistance       = score()->styleP(StyleIdx::staffDistance);
      qreal akkoladeDistance    = score()->styleP(StyleIdx::akkoladeDistance);

      if (visibleStaves.empty()) {
            qDebug("====no visible staves, staves %d, score staves %d", _staves.size(), score()->nstaves());
            }

      for (auto i = visibleStaves.begin();; ++i) {
            SysStaff* ss  = i->second;
            int si1       = i->first;
            Staff* staff  = score()->staff(si1);
            auto ni       = i + 1;

            qreal h = staff->height();
            if (ni == visibleStaves.end()) {
                  ss->setYOff(staff->lines() == 1 ? _spatium * staff->mag() : 0.0);
                  ss->bbox().setRect(_leftMargin, y, width() - _leftMargin, h);
                  break;
                  }

            int si2    = ni->first;
            qreal dist = h;

            switch (staff->innerBracket()) {
                  case BracketType::BRACE:
                        dist += akkoladeDistance;
                        break;
                  case BracketType::NORMAL:
                  case BracketType::SQUARE:
                  case BracketType::LINE:
                  case BracketType::NO_BRACKET:
                        dist += staffDistance;
                        break;
                  }
            dist += score()->staff(si2)->userDist();

            for (MeasureBase* mb : ml) {
                  if (!mb->isMeasure())
                        continue;
                  Measure* m = toMeasure(mb);
                  Shape& s1 = m->staffShape(si1);
                  Shape& s2 = m->staffShape(si2);

                  qreal d = s1.minVerticalDistance(s2) + minVerticalDistance;
                  dist    = qMax(dist, d);

                  Spacer* sp = m->mstaff(si1)->_vspacerDown;
                  if (sp) {
                        if (sp->spacerType() == SpacerType::FIXED) {
                              dist = staff->height() + sp->gap();
                              break;
                              }
                        else
                              dist = qMax(dist, staff->height() + sp->gap());
                        }
//.........这里部分代码省略.........

//.........这里部分代码省略.........
                              b = new Bracket(score());
                              b->setGenerated(true);
                              b->setTrack(track);
                              b->setLevel(i);
                              }
                        add(b);
                        b->setFirstStaff(firstStaff);
                        b->setLastStaff(lastStaff);
                        b->setBracketType(s->bracket(i));
                        b->setSpan(s->bracketSpan(i));
                        bracketWidth[i] = qMax(bracketWidth[i], b->width());
                        }
                  }
            if (!s->show())
                  continue;
            for (InstrumentName* t : _staves[staffIdx]->instrumentNames) {
                  t->layout();
                  qreal w = t->width() + point(instrumentNameOffset);
                  if (w > xoff2)
                        xoff2 = w;
                  }
            }

      for (Bracket* b : bl)
            delete b;

      //---------------------------------------------------
      //  layout  SysStaff and StaffLines
      //---------------------------------------------------

      _leftMargin = xoff2;


      qreal bd = score()->styleP(StyleIdx::bracketDistance);
      if ( _brackets.size() > 0) {
            for (int i = 0; i < bracketLevels; ++i)
                  _leftMargin += bracketWidth[i] + bd;
            }

      int nVisible = 0;
      for (int staffIdx = 0; staffIdx < nstaves; ++staffIdx) {
            SysStaff* s  = _staves[staffIdx];
            Staff* staff = score()->staff(staffIdx);
            if (!staff->show() || !s->show()) {
                  s->setbbox(QRectF());
                  continue;
                  }
            ++nVisible;
            qreal staffMag = staff->mag();
            qreal h;
            if (staff->lines() == 1)
                  h = 2;
            else
                  h = (staff->lines()-1) * staff->lineDistance();
            h = h * staffMag * spatium();
            s->bbox().setRect(_leftMargin + xo1, 0.0, 0.0, h);
            }

      //---------------------------------------------------
      //  layout brackets
      //---------------------------------------------------

      for (Bracket* b : _brackets) {
            qreal xo = -xo1;
            for (const Bracket* b2 : _brackets) {
                   if (b->level() > b2->level() &&
                      ((b->firstStaff() >= b2->firstStaff() && b->firstStaff() <= b2->lastStaff()) ||
                      (b->lastStaff() >= b2->firstStaff() && b->lastStaff() <= b2->lastStaff())))
                        xo += b2->width() + bd;
                   }
            b->rxpos() = _leftMargin - xo - b->width();
            }

      //---------------------------------------------------
      //  layout instrument names x position
      //---------------------------------------------------

      int idx = 0;
      for (const Part* p : score()->parts()) {
            SysStaff* s = staff(idx);
            if (s->show() && p->show()) {
                  for (InstrumentName* t : s->instrumentNames) {
                        switch (t->textStyle().align() & AlignmentFlags::HMASK) {
                              case int(AlignmentFlags::LEFT):
                                    t->rxpos() = 0;
                                    break;
                              case int(AlignmentFlags::HCENTER):
                                    t->rxpos() = (xoff2 - point(instrumentNameOffset) + xo1) * .5;
                                    break;
                              case int(AlignmentFlags::RIGHT):
                              default:
                                    t->rxpos() = xoff2 - point(instrumentNameOffset) + xo1;
                                    break;
                              }
                        t->rxpos() += t->textStyle().offset(t->spatium()).x();
                        }
                  }
            idx += p->nstaves();
            }
      }

void PositionCursor::move(int tick)
      {
      QRectF r(bbox());
      //
      // set mark height for whole system
      //
      if (_type == CursorType::LOOP_OUT)
        tick --;
      Score* score = _sv->score();
      Measure* measure = score->tick2measureMM(tick);
      if (measure == 0)
            return;
      qreal x;
      int offset = 0;

      Segment* s;
      for (s = measure->first(Segment::Type::ChordRest); s;) {
            int t1 = s->tick();
            int x1 = s->canvasPos().x();
            qreal x2;
            int t2;
            Segment* ns = s->next(Segment::Type::ChordRest);
            if (ns) {
                  t2 = ns->tick();
                  x2 = ns->canvasPos().x();
                  }
            else {
                  t2 = measure->endTick();
                  x2 = measure->canvasPos().x() + measure->width();
                  }
            t1 += offset;
            t2 += offset;
            if (tick >= t1 && tick < t2) {
                  int   dt = t2 - t1;
                  qreal dx = x2 - x1;
                  x = x1 + dx * (tick-t1) / dt;
                  break;
                  }
            s = ns;
            }
      if (s == 0)
            return;

      System* system = measure->system();
      if (system == 0)
            return;
      double y        = system->staffYpage(0) + system->page()->pos().y();
      double _spatium = score->spatium();

      qreal mag = _spatium / (MScore::DPI * SPATIUM20);
      double w  = (_spatium * 2.0 + score->scoreFont()->width(SymId::noteheadBlack, mag))/3;
      double h  = 6 * _spatium;
      //
      // set cursor height for whole system
      //
      double y2 = 0.0;

      for (int i = 0; i < score->nstaves(); ++i) {
            SysStaff* ss = system->staff(i);
            if (!ss->show() || !score->staff(i)->show())
                  continue;
            y2 = ss->y() + ss->bbox().height();
            }
      h += y2;
      y -= 3 * _spatium;

      if (_type == CursorType::LOOP_IN) {
            x = x - _spatium + w/1.5;
            }
      else {
            x = x - _spatium * .5;
            }
      _tick = tick;
      _rect = QRectF(x, y, w, h);
      _sv->update(_sv->matrix().mapRect(r | bbox()).toRect().adjusted(-1,-1,1,1));
      }

void System::layout2()
      {
      if (isVbox())                 // ignore vbox
            return;

      int nstaves    = _staves.size();
      qreal _spatium = spatium();

      qreal y = 0.0;
      int lastStaffIdx  = 0;   // last visible staff
      int firstStaffIdx = -1;
      qreal lastStaffDistanceDown = 0.0;
      for (int staffIdx = 0; staffIdx < nstaves; ++staffIdx) {
            Staff* staff = score()->staff(staffIdx);
            StyleIdx downDistance;
            qreal userDist = 0.0;
            if ((staffIdx + 1) == nstaves) {
                  //
                  // last staff in system
                  //
                  MeasureBase* mb = ml.last();
                  bool nextMeasureIsVBOX = false;
                  if (mb->next()) {
                        Element::Type type = mb->next()->type();
                        if (type == Element::Type::VBOX || type == Element::Type::TBOX || type == Element::Type::FBOX)
                              nextMeasureIsVBOX = true;
                        }
                  downDistance = nextMeasureIsVBOX ? StyleIdx::systemFrameDistance : StyleIdx::minSystemDistance;
                  }
            else if (staff->rstaff() < (staff->part()->staves()->size()-1)) {
                  //
                  // staff is not last staff in a part
                  //
                  downDistance = StyleIdx::akkoladeDistance;
                  userDist = score()->staff(staffIdx + 1)->userDist();
                  }
            else {
                  downDistance = StyleIdx::staffDistance;
                  userDist = score()->staff(staffIdx + 1)->userDist();
                  }

            SysStaff* s    = _staves[staffIdx];
            qreal distDown = score()->styleS(downDistance).val() * _spatium + userDist;
            qreal nominalDistDown = distDown;
            qreal distUp   = 0.0;
            int n = ml.size();
            for (int i = 0; i < n; ++i) {
                  MeasureBase* m = ml.at(i);
                  distDown = qMax(distDown, m->distanceDown(staffIdx));
                  distUp   = qMax(distUp,   m->distanceUp(staffIdx));
                  }
            s->setDistanceDown(distDown);
            s->setDistanceUp(distUp);

            if (!staff->show() || !s->show()) {
                  s->setbbox(QRectF());  // already done in layout() ?
                  continue;
                  }
            qreal sHeight = staff->height();
            qreal dup = staffIdx == 0 ? 0.0 : s->distanceUp();
            if (staff->lines() == 1)
                  dup -= _spatium * staff->mag();
            s->bbox().setRect(_leftMargin, y + dup, width() - _leftMargin, sHeight);
            y += dup + sHeight + s->distanceDown();
            lastStaffIdx = staffIdx;
            lastStaffDistanceDown = distDown - nominalDistDown;
            if (firstStaffIdx == -1)
                  firstStaffIdx = staffIdx;
            }
      if (firstStaffIdx == -1)
            firstStaffIdx = 0;

      qreal systemHeight = staff(lastStaffIdx)->bbox().bottom();
      if (lastStaffIdx < nstaves - 1)
            systemHeight += lastStaffDistanceDown;
      setHeight(systemHeight);

      int n = ml.size();
      for (int i = 0; i < n; ++i) {
            MeasureBase* m = ml.at(i);
            if (m->type() == Element::Type::MEASURE) {
                  // note that the factor 2 * _spatium must be corrected for when exporting
                  // system distance in MusicXML (issue #24733)
                  m->bbox().setRect(0.0, -_spatium, m->width(), systemHeight + 2 * _spatium);
                  }
            else if (m->type() == Element::Type::HBOX) {
                  m->bbox().setRect(0.0, 0.0, m->width(), systemHeight);
                  static_cast<HBox*>(m)->layout2();
                  }
            }

      if (_barLine) {
            _barLine->setTrack(firstStaffIdx * VOICES);
            _barLine->setSpan(lastStaffIdx - firstStaffIdx + 1);
            if (score()->staff(0)->lines() == 1)
                  _barLine->setSpanFrom(BARLINE_SPAN_1LINESTAFF_FROM);

            int spanTo = (score()->staff(lastStaffIdx)->lines() == 1) ?
                              BARLINE_SPAN_1LINESTAFF_TO :
                              (score()->staff(lastStaffIdx)->lines()-1)*2;
//.........这里部分代码省略.........

void ContinuousPanel::paint(const QRect& /*r*/, QPainter& p)
      {
      if (!_active) {
            _visible = false;
            return;
            }

      Measure* measure = _score->tick2measure(0);
      if (measure == 0){
            _visible = false;
            return;
            }

      if (measure->mmRest()) {
            measure = measure->mmRest();
            _mmRestCount = measure->mmRestCount();
            }

      System* system = measure->system();
            if (system == 0) {
                  _visible = false;
                  return;
                  }

      Segment* s = _score->tick2segment(0);
      double _spatium = _score->spatium();
      _x = 0;
      if (_width <= 0)
            _width  = s->x();

      //
      // Set panel height for whole system
      //
      _height = 6 * _spatium;
      _y = system->staffYpage(0) + system->page()->pos().y();
      double y2 = 0.0;
      for (int i = 0; i < _score->nstaves(); ++i) {
            SysStaff* ss = system->staff(i);
            if (!ss->show() || !_score->staff(i)->show())
                  continue;
            y2 = ss->y() + ss->bbox().height();
            }
      _height += y2 + 6*_spatium;
      _y -= 6 * _spatium;

      //
      // Check elements at current panel position
      //
      _offsetPanel = -(_sv->xoffset()) / _sv->pmag();
      _rect = QRect(_offsetPanel + _width, _y, 1, _height);
      //qDebug() << "width=" << _width << "_y="<< _y << "_offsetPanel=" << _offsetPanel << "_sv->xoffset()" << _sv->xoffset() << "_sv->pmag()" << _sv->pmag() <<"_spatium" << _spatium << "s->canvasPos().x()" << s->canvasPos().x() << "s->x()" << s->x();
      Page* page = _score->pages().front();
      QList<Element*> elementsCurrent = page->items(_rect);
      if (elementsCurrent.empty()) {
            _visible = false;
            return;
            }
      qStableSort(elementsCurrent.begin(), elementsCurrent.end(), elementLessThan);

      _currentMeasure = nullptr;
      for (const Element* e : elementsCurrent) {
            e->itemDiscovered = 0;
            if (!e->visible()) {
                  if (_score->printing() || !_score->showInvisible())
                        continue;
                  }

            if (e->type() == Element::Type::MEASURE) {
                  _currentMeasure = static_cast<const Measure*>(e);
                  _currentTimeSig = _currentMeasure->timesig();
                  _currentMeasureTick = _currentMeasure->tick();
                  _currentMeasureNo = _currentMeasure->no();

                  // Find number of multi measure rests to display in the panel
                  if (_currentMeasure->isMMRest())
                        _mmRestCount = _currentMeasure->mmRestCount();
                  else if (_currentMeasure->mmRest())
                        _mmRestCount = _currentMeasure->mmRest()->mmRestCount();
                  else
                        _mmRestCount = 0;
                  _xPosMeasure = e->canvasX();
                  _measureWidth = e->width();
                  break;
                  }
            }
      if (_currentMeasure == nullptr)
            return;

      findElementWidths(elementsCurrent);

      // Don't show panel if staff names are visible
      if (_sv->xoffset() / _sv->pmag() + _xPosMeasure > 0) {
            _visible = false;
            return;
            }
      //qDebug() << "_sv->xoffset()=" <<_sv->xoffset() << " _sv->pmag()="<< _sv->pmag() <<" s->x=" << s->x() << " width=" << _width << " currentMeasue=" << _currentMeasure->x() << " _xPosMeasure=" << _xPosMeasure;

      draw(p, elementsCurrent);
      _visible = true;
      }