C++ (Cpp) QwtLegendItem::setIdentifierMode 예제들

예제 #1

파일: qwt5_histogram_item.cpp 프로젝트: Br1ndavoine/QGIS

//!  Update the widget that represents the curve on the legend
// this was adapted from QwtPlotCurve::updateLegend()
void HistogramItem::updateLegend( QwtLegend *legend ) const
{
  if ( !legend )
    return;

  QwtPlotItem::updateLegend( legend );

  QWidget *widget = legend->find( this );
  if ( !widget || !widget->inherits( "QwtLegendItem" ) )
    return;

  QwtLegendItem *legendItem = ( QwtLegendItem * )widget;

#if QT_VERSION < 0x040000
  const bool doUpdate = legendItem->isUpdatesEnabled();
#else
  const bool doUpdate = legendItem->updatesEnabled();
#endif
  legendItem->setUpdatesEnabled( false );

  const int policy = legend->displayPolicy();

  if ( policy == QwtLegend::FixedIdentifier )
  {
    int mode = legend->identifierMode();

    legendItem->setCurvePen( QPen( color() ) );

    if ( mode & QwtLegendItem::ShowText )
      legendItem->setText( title() );
    else
      legendItem->setText( QwtText() );

    legendItem->setIdentifierMode( mode );
  }
  else if ( policy == QwtLegend::AutoIdentifier )
  {
    int mode = 0;

    legendItem->setCurvePen( QPen( color() ) );
    mode |= QwtLegendItem::ShowLine;
    if ( !title().isEmpty() )
    {
      legendItem->setText( title() );
      mode |= QwtLegendItem::ShowText;
    }
    else
    {
      legendItem->setText( QwtText() );
    }
    legendItem->setIdentifierMode( mode );
  }

  legendItem->setUpdatesEnabled( doUpdate );
  legendItem->update();
}

예제 #2

void VectorPlot::addDotPlot(const MarkupQwtAdapter&adapter,
		QColor color,
		const QString &name,
		bool addToLegend) {
	QwtPlotCurve *curve = new QwtPlotCurve(name);

    QwtSymbol sym;
    sym.setPen(QColor(color));
    sym.setBrush(QColor(color));
    sym.setStyle(QwtSymbol::Rect);
    sym.setSize(
			QSize(1, 20)
			);
	curve->setSymbol(sym);
	curve->setStyle(QwtPlotCurve::NoCurve);

	if(adapter.size() > 0) {
		setupPlot(adapter.boundingRect());
		curve->setData(adapter);
		curve->attach(plot);
	}

	if(!legend) {
		return;
	}

    // Добавляем кривую в легенду
	QwtLegendItem *item = new QwtLegendItem(0);
	item->setText(curve->title());
	item->setSymbol(sym);
	item->setIdentifierMode(QwtLegendItem::ShowLine | QwtLegendItem::ShowSymbol | QwtLegendItem::ShowText);
	legend->insert(curve, item);
}

예제 #3

파일: PlotCurve.cpp 프로젝트: cephdon/OMPlot

void PlotCurve::updateLegend(QwtLegend *legend) const
{
  QwtPlotCurve::updateLegend(legend);
  QwtLegendItem *pQwtLegendItem = dynamic_cast<QwtLegendItem*>(legend->find(this));
  if (pQwtLegendItem)
  {
    pQwtLegendItem->setIdentifierMode(QwtLegendItem::ShowLine);
    pQwtLegendItem->setIdentifierWidth(30);
  }
  QwtPlotItem::updateLegend(legend);
}

예제 #4

파일: qwt_polar_curve.cpp 프로젝트: ACorradini/QGIS

//!  Update the widget that represents the curve on the legend
void QwtPolarCurve::updateLegend( QwtLegend *legend ) const
{
  if ( !legend )
    return;

  QwtPolarItem::updateLegend( legend );

  QWidget *widget = legend->find( this );
  if ( !widget || !widget->inherits( "QwtLegendItem" ) )
    return;

  QwtLegendItem *legendItem = ( QwtLegendItem * )widget;

#if QT_VERSION < 0x040000
  const bool doUpdate = legendItem->isUpdatesEnabled();
#else
  const bool doUpdate = legendItem->updatesEnabled();
#endif
  legendItem->setUpdatesEnabled( false );

  const int policy = legend->displayPolicy();

  if ( policy == QwtLegend::FixedIdentifier )
  {
    int mode = legend->identifierMode();

    if ( mode & QwtLegendItem::ShowLine )
      legendItem->setCurvePen( pen() );

    if ( mode & QwtLegendItem::ShowSymbol )
      legendItem->setSymbol( symbol() );

    if ( mode & QwtLegendItem::ShowText )
      legendItem->setText( title() );
    else
      legendItem->setText( QwtText() );

    legendItem->setIdentifierMode( mode );
  }
  else if ( policy == QwtLegend::AutoIdentifier )
  {
    int mode = 0;

    if ( QwtPolarCurve::NoCurve != style() )
    {
      legendItem->setCurvePen( pen() );
      mode |= QwtLegendItem::ShowLine;
    }
    if ( QwtSymbol::NoSymbol != symbol().style() )
    {
      legendItem->setSymbol( symbol() );
      mode |= QwtLegendItem::ShowSymbol;
    }
    if ( !title().isEmpty() )
    {
      legendItem->setText( title() );
      mode |= QwtLegendItem::ShowText;
    }
    else
    {
      legendItem->setText( QwtText() );
    }
    legendItem->setIdentifierMode( mode );
  }

  legendItem->setUpdatesEnabled( doUpdate );
  legendItem->update();
}