C++ TimeSig::layout方法代码示例

void ContinuousPanel::draw(QPainter& painter, const QList<Element*>& el) {
      painter.save();
      painter.setRenderHint(QPainter::Antialiasing, preferences.antialiasedDrawing);
      painter.setRenderHint(QPainter::TextAntialiasing, true);

      // Draw colored rectangle
      painter.setClipping(false);
      QPointF pos(_offsetPanel, 0);
      painter.translate(pos);
      QPen pen;
      pen.setWidthF(0.0);
      pen.setStyle(Qt::NoPen);
      painter.setPen(pen);
      painter.setBrush(preferences.fgColor);
      QRectF bg(_rect);
      bg.setWidth(_widthClef + _widthKeySig + _widthTimeSig + _leftMarginTotal + _panelRightPadding);
      QPixmap* fgPixmap = _sv->fgPixmap();
      if (fgPixmap == 0 || fgPixmap->isNull())
            painter.fillRect(bg, preferences.fgColor);
      else {
            painter.setMatrixEnabled(false);
            painter.drawTiledPixmap(bg, *fgPixmap, bg.topLeft()
               - QPoint(lrint(_sv->matrix().dx()), lrint(_sv->matrix().dy())));
            painter.setMatrixEnabled(true);
            }

      painter.setClipRect(_rect);
      painter.setClipping(true);

      QColor color(MScore::layoutBreakColor);

      // Draw measure text number
      QString text = _mmRestCount ? QString("#%1-%2").arg(_currentMeasureNo+1).arg(_currentMeasureNo+_mmRestCount) : QString("#%1").arg(_currentMeasureNo+1);
      Text* newElement = new Text(_score);
      newElement->setTextStyleType(TextStyleType::DEFAULT);
      newElement->setFlag(ElementFlag::MOVABLE, false);
      newElement->setXmlText(text);
      newElement->textStyle().setFamily("FreeSans");
      newElement->textStyle().setSizeIsSpatiumDependent(true);
      newElement->setColor(color);
      newElement->sameLayout();
      pos = QPointF(_score->styleP(StyleIdx::clefLeftMargin) + _widthClef, _y + newElement->height());
      painter.translate(pos);
      newElement->draw(&painter);
      pos += QPointF(_offsetPanel, 0);
      painter.translate(-pos);
      delete newElement;

      // This second pass draws the elements spaced evently using the width of the largest element
      for (const Element* e : el) {
            e->itemDiscovered = 0;
            if (!e->visible()) {
                  if (_score->printing() || !_score->showInvisible())
                        continue;
                  }

           if (e->type() == Element::Type::STAFF_LINES) {
                  Staff* currentStaff = _score->staff(e->staffIdx());
                  Segment* parent = _score->tick2segmentMM(_currentMeasureTick);

                  pos = QPointF (_offsetPanel, e->pagePos().y());
                  painter.translate(pos);

                  // Draw staff lines
                  StaffLines* newStaffLines = static_cast<StaffLines*>(e->clone());
                  newStaffLines->setWidth(bg.width());
                  newStaffLines->setParent(parent);
                  newStaffLines->setTrack(e->track());
                  newStaffLines->layout();
                  newStaffLines->setColor(color);
                  newStaffLines->draw(&painter);
                  delete newStaffLines;

                  // Draw barline
                  BarLine* newBarLine = new BarLine(_score);
                  newBarLine->setBarLineType(BarLineType::NORMAL);
                  newBarLine->setParent(parent);
                  newBarLine->setTrack(e->track());
                  newBarLine->setSpan(currentStaff->barLineSpan());
                  newBarLine->setSpanFrom(currentStaff->barLineFrom());
                  newBarLine->setSpanTo(currentStaff->barLineTo());
                  newBarLine->layout();
                  newBarLine->setColor(color);
                  newBarLine->draw(&painter);
                  delete newBarLine;

                  // Draw the current staff name
                  QList<StaffName>& staffNamesLong = currentStaff->part()->instrument()->longNames();
                  QString staffName = staffNamesLong.isEmpty() ? " " : staffNamesLong[0].name();
                  if (staffName == "") {
                        QList<StaffName>& staffNamesShort = currentStaff->part()->instrument()->shortNames();
                        staffName = staffNamesShort.isEmpty() ? "" : staffNamesShort[0].name();
                        }

                  Text* newName = new Text(_score);
                  newName->setXmlText(staffName);
                  newName->setParent(parent);
                  newName->setTrack(e->track());
                  newName->setColor(color);
                  newName->textStyle().setFamily("FreeSans");
//.........这里部分代码省略.........

//.........这里部分代码省略.........
      // 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) {
            e->itemDiscovered = 0;
            if (!e->visible() && !_score->showInvisible())
                  continue;

            if (e->isRest() && toRest(e)->isGap())
                  continue;

            if (e->isStaffLines()) {
                  Staff* currentStaff = _score->staff(e->staffIdx());
                  Segment* parent = _score->tick2segment(tick);

                  // Find maximum width for the staff name
                  QList<StaffName>& staffNamesLong = currentStaff->part()->instrument()->longNames();
                  QString staffName = staffNamesLong.isEmpty() ? " " : staffNamesLong[0].name();
                  if (staffName == "") {
                        QList<StaffName>& staffNamesShort = currentStaff->part()->instrument()->shortNames();
                        staffName = staffNamesShort.isEmpty() ? "" : staffNamesShort[0].name();
                        }
                  Text* newName = new Text(_score);
                  newName->setXmlText(staffName);
                  newName->setParent(parent);
                  newName->setTrack(e->track());
                  newName->textStyle().setFamily("FreeSans");
                  newName->textStyle().setSizeIsSpatiumDependent(true);
                  newName->layout();
                  newName->setPlainText(newName->plainText());
                  newName->layout();

                  // Find maximum width for the current Clef
                  Clef* newClef = new Clef(_score);
                  ClefType currentClef = currentStaff->clef(tick);
                  newClef->setClefType(currentClef);
                  newClef->setParent(parent);
                  newClef->setTrack(e->track());
                  newClef->layout();
                  if (newClef->width() > _widthClef)
                        _widthClef = newClef->width();

                  // Find maximum width for the current KeySignature
                  KeySig* newKs = new KeySig(_score);
                  KeySigEvent currentKeySigEvent = currentStaff->keySigEvent(tick);
                  newKs->setKeySigEvent(currentKeySigEvent);
                  // The Parent and the Track must be set to have the key signature layout adjusted to different clefs
                  // This also adds naturals to the key signature (if set in the score style)
                  newKs->setParent(parent);
                  newKs->setTrack(e->track());
                  newKs->setHideNaturals(true);
                  newKs->layout();
                  if (newKs->width() > _widthKeySig)
                        _widthKeySig = newKs->width();

                  // Find maximum width for the current TimeSignature
                  TimeSig* newTs = new TimeSig(_score);

                  // Try to get local time signature, if not, get the current measure one
                  TimeSig* currentTimeSig = currentStaff->timeSig(tick);
                  if (currentTimeSig)

void ContinuousPanel::findElementWidths(const QList<Element*>& el) {
      // The first pass serves to get the maximum width for each elements
      qreal lineWidthName = 0;
      _widthClef = 0;
      _widthKeySig = 0;
      _widthTimeSig = 0;
      _xPosTimeSig = 0;
      for (const Element* e : el) {
            e->itemDiscovered = 0;
            if (!e->visible()) {
                  if (_score->printing() || !_score->showInvisible())
                        continue;
                  }

            if (e->type() == Element::Type::STAFF_LINES) {
                  Staff* currentStaff = _score->staff(e->staffIdx());
                  Segment* parent = _score->tick2segment(_currentMeasureTick);

                  // Find maximum width for the staff name
                  QList<StaffName>& staffNamesLong = currentStaff->part()->instrument()->longNames();
                  QString staffName = staffNamesLong.isEmpty() ? " " : staffNamesLong[0].name();
                  if (staffName == "") {
                        QList<StaffName>& staffNamesShort = currentStaff->part()->instrument()->shortNames();
                        staffName = staffNamesShort.isEmpty() ? "" : staffNamesShort[0].name();
                        }
                  Text* newName = new Text(_score);
                  newName->setXmlText(staffName);
                  newName->setParent(parent);
                  newName->setTrack(e->track());
                  newName->textStyle().setFamily("FreeSans");
                  newName->textStyle().setSizeIsSpatiumDependent(true);
                  newName->layout();
                  newName->setPlainText(newName->plainText());
                  newName->layout();

                  // Find maximum width for the current Clef
                  Clef* newClef = new Clef(_score);
                  ClefType currentClef = currentStaff->clef(_currentMeasureTick);
                  newClef->setClefType(currentClef);
                  newClef->setParent(parent);
                  newClef->setTrack(e->track());
                  newClef->layout();

                  // Find maximum width for the current KeySignature
                  KeySig* newKs = new KeySig(_score);
                  KeySigEvent currentKeySigEvent = currentStaff->keySigEvent(_currentMeasureTick);
                  newKs->setKeySigEvent(currentKeySigEvent);
                  // The Parent and the Track must be set to have the key signature layout adjusted to different clefs
                  // This also adds naturals to the key signature (if set in the score style)
                  newKs->setParent(parent);
                  newKs->setTrack(e->track());
                  newKs->setHideNaturals(true);
                  newKs->layout();

                  // Find maximum width for the current TimeSignature
                  TimeSig* newTs = new TimeSig(_score);

                  // Try to get local time signature, if not, get the current measure one
                  TimeSig* currentTimeSig = currentStaff->timeSig(_currentMeasureTick);
                  if (currentTimeSig)
                        newTs->setFrom(currentTimeSig);
                  else
                        newTs->setSig(_currentTimeSig.numerator(), _currentTimeSig.denominator(), TimeSigType::NORMAL);
                  newTs->setParent(parent);
                  newTs->setTrack(e->track());
                  newTs->layout();

                  if ((newName->width() > lineWidthName) && (newName->xmlText() != ""))
                        lineWidthName = newName->width();

                  if (newClef->width() > _widthClef)
                        _widthClef = newClef->width();

                  if (newKs->width() > _widthKeySig)
                        _widthKeySig = newKs->width();

                  if (newTs->width() > _widthTimeSig)
                        _widthTimeSig = newTs->width();

                  delete newClef;
                  delete newName;
                  delete newKs;
                  delete newTs;
                 }
            }

      _leftMarginTotal = _score->styleP(StyleIdx::clefLeftMargin);
      _leftMarginTotal += _score->styleP(StyleIdx::keysigLeftMargin);
      _leftMarginTotal += _score->styleP(StyleIdx::timesigLeftMargin);

      _newWidth = _widthClef + _widthKeySig + _widthTimeSig + _leftMarginTotal + _panelRightPadding;
      _xPosMeasure -= _offsetPanel;

      lineWidthName += _score->spatium() + _score->styleP(StyleIdx::clefLeftMargin) + _widthClef;
      if (_newWidth < lineWidthName) {
            _newWidth = lineWidthName;
            _oldWidth = 0;
            }
      if (_oldWidth == 0) {
            _oldWidth = _newWidth;
//.........这里部分代码省略.........