C++ SysStaff::setYOff方法代码示例

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.........

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();
            // one-line staves get additional padding for their bbox
            qreal off = staff->lines() == 1 ? _spatium * staff->mag() : 0.0;
            s->setYOff(off);
            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(firstStaffIdx)->lines() == 1)
                  _barLine->setSpanFrom(BARLINE_SPAN_1LINESTAFF_FROM);
            else
                  _barLine->setSpanFrom(0);
            int spanTo = (score()->staff(lastStaffIdx)->lines() == 1) ?
//.........这里部分代码省略.........