C++ QListIterator::peekNext方法代码示例

void SubassemblyView::updateConstraintName ( const QString& /*name*/ )
{
  // The budget approach is just to recompute all of the list view strings.
  // Not sure what being more selective would avail us.
  //ListViewItem* list_item = list_view_item_->firstChild();

    //TODO
    ListViewItem* list_item = static_cast<ListViewItem*>(list_view_item_->child(0));
   QListIterator< std::shared_ptr<AssemblyConstraint>> constraint = subassembly_->constraints().
                           constraints();

  while ( constraint.hasNext() ) {
    QString text;
    if ( constraint.peekNext()->type() == lC::STR::MATE_OFFSET ||
     constraint.peekNext()->type() == lC::STR::ALIGN_OFFSET )
      text = tr( "Offset %1: " ).
    arg( UnitsBasis::instance()->format( constraint.peekNext()->offset(),false));

    if ( constraint.peekNext()->reference1().empty() ) {
      text += lC::formatName( model()->idPath( constraint.peekNext()->reference0()));
    }
    else {
      text += tr( "%1 to %2" ).
    arg( lC::formatName( model()->idPath( constraint.peekNext()->reference0()))).
    arg( lC::formatName( model()->idPath( constraint.peekNext()->reference1())));
    }

    list_item->setData( text, lC::DETAIL );
//TODO
    //list_item = list_item->nextSibling();
  }
}

/*
The ultimate line painting function.
Currently missing features:
- draw indent lines
*/
void KateRenderer::paintTextLine(QPainter& paint, KateLineLayoutPtr range, int xStart, int xEnd, const KTextEditor::Cursor* cursor)
{
  Q_ASSERT(range->isValid());

//   kDebug( 13033 )<<"KateRenderer::paintTextLine";

  // font data
  const QFontMetricsF &fm = config()->fontMetrics();

  int currentViewLine = -1;
  if (cursor && cursor->line() == range->line())
    currentViewLine = range->viewLineForColumn(cursor->column());

  paintTextLineBackground(paint, range, currentViewLine, xStart, xEnd);

  if (range->layout()) {
    bool drawSelection = m_view->selection() && showSelections() && m_view->selectionRange().overlapsLine(range->line());
    // Draw selection in block selecton mode. We need 2 kinds of selections that QTextLayout::draw can't render:
    //   - past-end-of-line selection and
    //   - 0-column-wide selection (used to indicate where text will be typed)
    if (drawSelection && m_view->blockSelection()) {
      int selectionStartColumn = m_doc->fromVirtualColumn(range->line(), m_doc->toVirtualColumn(m_view->selectionRange().start()));
      int selectionEndColumn   = m_doc->fromVirtualColumn(range->line(), m_doc->toVirtualColumn(m_view->selectionRange().end()));
      QBrush selectionBrush = config()->selectionColor();
      if (selectionStartColumn != selectionEndColumn) {
        KateTextLayout lastLine = range->viewLine(range->viewLineCount() - 1);
        if (selectionEndColumn > lastLine.startCol()) {
          int selectionStartX = (selectionStartColumn > lastLine.startCol()) ? cursorToX(lastLine, selectionStartColumn, true) : 0;
          int selectionEndX = cursorToX(lastLine, selectionEndColumn, true);
          paint.fillRect(QRect(selectionStartX - xStart, (int)lastLine.lineLayout().y(), selectionEndX - selectionStartX, lineHeight()), selectionBrush);
        }
      } else {
        const int selectStickWidth = 2;
        KateTextLayout selectionLine = range->viewLine(range->viewLineForColumn(selectionStartColumn));
        int selectionX = cursorToX(selectionLine, selectionStartColumn, true);
        paint.fillRect(QRect(selectionX - xStart, (int)selectionLine.lineLayout().y(), selectStickWidth, lineHeight()), selectionBrush);
      }
    }

    QVector<QTextLayout::FormatRange> additionalFormats;
    if (range->length() > 0) {
      // We may have changed the pen, be absolutely sure it gets set back to
      // normal foreground color before drawing text for text that does not
      // set the pen color
      paint.setPen(attribute(KTextEditor::HighlightInterface::dsNormal)->foreground().color());
      // Draw the text :)
      if (drawSelection) {
        // FIXME toVector() may be a performance issue
        additionalFormats = decorationsForLine(range->textLine(), range->line(), true).toVector();
        range->layout()->draw(&paint, QPoint(-xStart,0), additionalFormats);

      } else {
        range->layout()->draw(&paint, QPoint(-xStart,0));
      }
    }

    QBrush backgroundBrush;
    bool backgroundBrushSet = false;

    // Loop each individual line for additional text decoration etc.
    QListIterator<QTextLayout::FormatRange> it = range->layout()->additionalFormats();
    QVectorIterator<QTextLayout::FormatRange> it2 = additionalFormats;
    for (int i = 0; i < range->viewLineCount(); ++i) {
      KateTextLayout line = range->viewLine(i);

      // Determine the background to use, if any, for the end of this view line
      backgroundBrushSet = false;
      while (it2.hasNext()) {
        const QTextLayout::FormatRange& fr = it2.peekNext();
        if (fr.start > line.endCol())
          break;

        if (fr.start + fr.length > line.endCol()) {
          if (fr.format.hasProperty(QTextFormat::BackgroundBrush)) {
            backgroundBrushSet = true;
            backgroundBrush = fr.format.background();
          }

          goto backgroundDetermined;
        }

        it2.next();
      }

      while (it.hasNext()) {
        const QTextLayout::FormatRange& fr = it.peekNext();
        if (fr.start > line.endCol())
          break;

        if (fr.start + fr.length > line.endCol()) {
          if (fr.format.hasProperty(QTextFormat::BackgroundBrush)) {
            backgroundBrushSet = true;
            backgroundBrush = fr.format.background();
          }

//.........这里部分代码省略.........

void SubassemblyView::init ( void )
{
  setObjectName( subassembly_->name().toLatin1() );

  drawer_ = Space3D::OCSubassemblyDrawFactory::drawer( subassembly_, view() );

  modify_input_ = new SubassemblyModifyInput( this );

  dimensions_[0] = dimensions_[1] = dimensions_[2] = 0;

  dimension_name_ = view()->genSelectionName();

  ListViewItem* previous_item = parent()->previousItem( parent()->listViewItem(),
							 subassembly_->id() );

  list_view_item_ = new ListViewItem( parent()->listViewItem(), previous_item );

  list_view_item_->setData( lC::formatName( subassembly_->name() )
                + QString( " <%1>" ).arg( subassembly_->id() ),
                            lC::NAME );
  list_view_item_->setData( trC( subassembly_->type() ), lC::TYPE );
  list_view_item_->setData( tr( "Model: %1.%2 <%3>" ).
		    arg( lC::formatName( subassembly_->subassembly()->name()) ).
		    arg( trC( subassembly_->subassembly()->type() ) ).
            arg( lC::idToString( subassembly_->subassembly()->ID() ) ),
                            lC::DETAIL );
  //TODO
  //list_view_item_->listView()->ensureItemVisible( list_view_item_ );

  QListIterator<std::shared_ptr<AssemblyConstraint>> constraint =
    subassembly_->constraints().constraints();

  ListViewItem* constraint_item = 0;
  while ( constraint.hasNext() ) {
    constraint_item = new ListViewItem( list_view_item_, constraint_item );
    constraint_item->setData( trC( lC::STR::CONSTRAINT ), lC::NAME );
    constraint_item->setData( trC( constraint.peekNext()->type() ), lC::TYPE );
    constraint_item->setData( QVariant(), lC::DETAIL );

    updateChangedConstraint( 0, constraint.peekNext().get() );

    // Are there any offset constraints which need dimensions?
    if ( constraint.peekNext()->type() == lC::STR::MATE_OFFSET ||
     constraint.peekNext()->type() == lC::STR::ALIGN_OFFSET )
      updateChangedOffset( constraint.peekNext().get() );
    constraint.next();
  }

#if 0
  connect( subassembly_, SIGNAL( locationChanged() ), SLOT( updateLocation() ) );
  connect( subassembly_, SIGNAL( solidChanged() ), SLOT( updateTessellation() ) );
#else
  connect( subassembly_, SIGNAL( locationChanged() ), SLOT( updateTessellation() ) );
#endif
  connect( subassembly_, SIGNAL( materialChanged() ), SLOT( updateMaterial() ) );

  connect( subassembly_, SIGNAL( constraintCreated( const AssemblyConstraint*) ),
	   SLOT( updateNewConstraint( const AssemblyConstraint* ) ) );
  connect( subassembly_, SIGNAL( constraintChanged( const AssemblyConstraint*,
						    const AssemblyConstraint*) ),
	   SLOT( updateChangedConstraint( const AssemblyConstraint*,
					  const AssemblyConstraint* ) ) );
  connect( subassembly_, SIGNAL( constraintOffsetChanged( const AssemblyConstraint*) ),
	   SLOT( updateChangedOffset( const AssemblyConstraint* ) ) );

 connect( subassembly_, SIGNAL( constraintCanceled() ),
	   SLOT( updateCanceledConstraint() ) );

  connect( subassembly_->subassembly(), SIGNAL( nameChanged(const QString&) ),
	   SLOT( updateModelName( const QString& ) ) );

  connect( parent(), SIGNAL( orientationChanged( const GLdouble* ) ),
	   SLOT( updateViewNormal( const GLdouble* ) ) );

  if ( offset_info_dialog_ == 0 )
    offset_info_dialog_ = new OffsetInfoDialog( parent()->lCMW() );
}