C++ MeasureBase::width方法代码示例

void Page::doRebuildBspTree()
      {
      int n = 0;
      scanElements(&n, countElements, false);

      QRectF r;
      if (score()->layoutMode() == LayoutMode::LINE) {
            qreal w = 0.0;
            qreal h = 0.0;
            if (!_systems.empty()) {
                  h = _systems.front()->height();
                  if (!_systems.front()->measures().empty()) {
                        MeasureBase* mb = _systems.front()->measures().back();
                        w = mb->x() + mb->width();
                        }
                  }
            r = QRectF(0.0, 0.0, w, h);
            }
      else
            r = abbox();

      bspTree.initialize(r, n);
      scanElements(&bspTree, &bspInsert, false);
      bspTreeValid = true;
      }

void Page::doRebuildBspTree()
      {
      QList<Element*> el;
      for (System* s : _systems) {
            for (MeasureBase* m : s->measures())
                  m->scanElements(&el, collectElements, false);
            }
      scanElements(&el, collectElements, false);

      int n = el.size();
      if (score()->layoutMode() == LayoutMode::LINE) {
            if (_systems.isEmpty())
                  return;
            if (_systems.front()->measures().isEmpty())
                  return;
            qreal h = _systems.front()->height();
            MeasureBase* mb = _systems.front()->measures().back();
            qreal w = mb->x() + mb->width();
            bspTree.initialize(QRectF(0.0, 0.0, w, h), n);
            }
      else
            bspTree.initialize(abbox(), n);
      for (int i = 0; i < n; ++i)
            bspTree.insert(el.at(i));
      bspTreeValid = true;
      }

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.........