/*!
\return Icon for the legend
In case of Tube style() the icon is a plain rectangle filled with the brush().
If a symbol is assigned it is scaled to size.
\param index Index of the legend entry
( ignored as there is only one )
\param size Icon size
\sa QwtPlotItem::setLegendIconSize(), QwtPlotItem::legendData()
*/
QwtGraphic QwtPlotIntervalCurve::legendIcon(
int index, const QSizeF &size ) const
{
Q_UNUSED( index );
if ( size.isEmpty() )
return QwtGraphic();
QwtGraphic icon;
icon.setDefaultSize( size );
icon.setRenderHint( QwtGraphic::RenderPensUnscaled, true );
QPainter painter( &icon );
painter.setRenderHint( QPainter::Antialiasing,
testRenderHint( QwtPlotItem::RenderAntialiased ) );
if ( d_data->style == Tube )
{
QRectF r( 0, 0, size.width(), size.height() );
painter.fillRect( r, d_data->brush );
}
if ( d_data->symbol &&
( d_data->symbol->style() != QwtIntervalSymbol::NoSymbol ) )
{
QPen pen = d_data->symbol->pen();
pen.setWidthF( pen.widthF() );
pen.setCapStyle( Qt::FlatCap );
painter.setPen( pen );
painter.setBrush( d_data->symbol->brush() );
if ( orientation() == Qt::Vertical )
{
const double x = 0.5 * size.width();
d_data->symbol->draw( &painter, orientation(),
QPointF( x, 0 ), QPointF( x, size.height() - 1.0 ) );
}
else
{
const double y = 0.5 * size.height();
d_data->symbol->draw( &painter, orientation(),
QPointF( 0.0, y ), QPointF( size.width() - 1.0, y ) );
}
}
return icon;
}
/*!
\return Icon representing the marker on the legend
\param index Index of the legend entry
( usually there is only one )
\param size Icon size
\sa setLegendIconSize(), legendData()
*/
QwtGraphic QwtPlotMarker::legendIcon( int index,
const QSizeF &size ) const
{
Q_UNUSED( index );
if ( size.isEmpty() )
return QwtGraphic();
QwtGraphic icon;
icon.setDefaultSize( size );
icon.setRenderHint( QwtGraphic::RenderPensUnscaled, true );
QPainter painter( &icon );
painter.setRenderHint( QPainter::Antialiasing,
testRenderHint( QwtPlotItem::RenderAntialiased ) );
if ( d_data->style != QwtPlotMarker::NoLine )
{
painter.setPen( d_data->pen );
if ( d_data->style == QwtPlotMarker::HLine ||
d_data->style == QwtPlotMarker::Cross )
{
const double y = 0.5 * size.height();
QwtPainter::drawLine( &painter,
0.0, y, size.width(), y );
}
if ( d_data->style == QwtPlotMarker::VLine ||
d_data->style == QwtPlotMarker::Cross )
{
const double x = 0.5 * size.width();
QwtPainter::drawLine( &painter,
x, 0.0, x, size.height() );
}
}
if ( d_data->symbol )
{
const QRect r( 0.0, 0.0, size.width(), size.height() );
d_data->symbol->drawSymbol( &painter, r );
}
return icon;
}
/*!
\return Icon for representing a bar on the legend
\param index Index of the bar
\param size Icon size
\return An icon showing a bar
\sa drawBar(), legendData()
*/
QwtGraphic QwtPlotMultiBarChart::legendIcon( int index,
const QSizeF &size ) const
{
QwtColumnRect column;
column.hInterval = QwtInterval( 0.0, size.width() - 1.0 );
column.vInterval = QwtInterval( 0.0, size.height() - 1.0 );
QwtGraphic icon;
icon.setDefaultSize( size );
icon.setRenderHint( QwtGraphic::RenderPensUnscaled, true );
QPainter painter( &icon );
painter.setRenderHint( QPainter::Antialiasing,
testRenderHint( QwtPlotItem::RenderAntialiased ) );
drawBar( &painter, -1, index, column );
return icon;
}
QwtGraphic Plot2DProfile::legendIcon( int /*index*/, const QSizeF& iconSize ) const {
if ( iconSize.isEmpty() ){
return QwtGraphic();
}
QwtGraphic icon;
icon.setDefaultSize( iconSize );
icon.setRenderHint( QwtGraphic::RenderPensUnscaled, true );
QPainter painter( &icon );
QPen pen( m_defaultColor );
pen.setStyle( m_penStyle );
pen.setWidth( 3 );
const double y = 0.5 * iconSize.height();
QPainterPath path;
path.moveTo( 0.0, y );
path.lineTo( iconSize.width(), y );
painter.strokePath( path, pen );
return icon;
}
/*!
\return A rectangle filled with the color of the brush ( or the pen )
\param index Index of the legend entry
( usually there is only one )
\param size Icon size
\sa setLegendIconSize(), legendData()
*/
QwtGraphic QwtPlotShapeItem::legendIcon( int index,
const QSizeF &size ) const
{
Q_UNUSED( index );
QwtGraphic icon;
icon.setDefaultSize( size );
if ( size.isEmpty() )
return icon;
if ( d_data->legendMode == QwtPlotShapeItem::LegendShape )
{
const QRectF &br = d_data->boundingRect;
QPainter painter( &icon );
painter.setRenderHint( QPainter::Antialiasing,
testRenderHint( QwtPlotItem::RenderAntialiased ) );
painter.translate( -br.topLeft() );
painter.setPen( d_data->pen );
painter.setBrush( d_data->brush );
painter.drawPath( d_data->shape );
}
else
{
QColor iconColor;
if ( d_data->brush.style() != Qt::NoBrush )
iconColor = d_data->brush.color();
else
iconColor = d_data->pen.color();
icon = defaultIcon( iconColor, size );
}
return icon;
}
/*!
\return Icon representing a bar or the chart on the legend
When the legendMode() is LegendBarTitles the icon shows
the bar corresponding to index - otherwise the bar
displays the default symbol.
\param index Index of the legend entry
\param size Icon size
\sa setLegendMode(), drawBar(),
QwtPlotItem::setLegendIconSize(), QwtPlotItem::legendData()
*/
QwtGraphic QwtPlotBarChart::legendIcon(
int index, const QSizeF &size ) const
{
QwtColumnRect column;
column.hInterval = QwtInterval( 0.0, size.width() - 1.0 );
column.vInterval = QwtInterval( 0.0, size.height() - 1.0 );
QwtGraphic icon;
icon.setDefaultSize( size );
icon.setRenderHint( QwtGraphic::RenderPensUnscaled, true );
QPainter painter( &icon );
painter.setRenderHint( QPainter::Antialiasing,
testRenderHint( QwtPlotItem::RenderAntialiased ) );
int barIndex = -1;
if ( d_data->legendMode == QwtPlotBarChart::LegendBarTitles )
barIndex = index;
drawBar( &painter, barIndex, QPointF(), column );
return icon;
}
/*!
\return Icon representing the curve on the legend
\param index Index of the legend entry
( ignored as there is only one )
\param size Icon size
\sa QwtPlotItem::setLegendIconSize(), QwtPlotItem::legendData()
*/
QwtGraphic QwtPlotCurve::legendIcon( int index,
const QSizeF &size ) const
{
Q_UNUSED( index );
if ( size.isEmpty() )
return QwtGraphic();
QwtGraphic graphic;
graphic.setDefaultSize( size );
graphic.setRenderHint( QwtGraphic::RenderPensUnscaled, true );
QPainter painter( &graphic );
painter.setRenderHint( QPainter::Antialiasing,
testRenderHint( QwtPlotItem::RenderAntialiased ) );
if ( d_data->legendAttributes == 0 ||
d_data->legendAttributes & QwtPlotCurve::LegendShowBrush )
{
QBrush brush = d_data->brush;
if ( brush.style() == Qt::NoBrush &&
d_data->legendAttributes == 0 )
{
if ( style() != QwtPlotCurve::NoCurve )
{
brush = QBrush( pen().color() );
}
else if ( d_data->symbol &&
( d_data->symbol->style() != QwtSymbol::NoSymbol ) )
{
brush = QBrush( d_data->symbol->pen().color() );
}
}
if ( brush.style() != Qt::NoBrush )
{
QRectF r( 0, 0, size.width(), size.height() );
painter.fillRect( r, brush );
}
}
if ( d_data->legendAttributes & QwtPlotCurve::LegendShowLine )
{
if ( pen() != Qt::NoPen )
{
QPen pn = pen();
pn.setCapStyle( Qt::FlatCap );
painter.setPen( pn );
const double y = 0.5 * size.height();
QwtPainter::drawLine( &painter, 0.0, y, size.width(), y );
}
}
if ( d_data->legendAttributes & QwtPlotCurve::LegendShowSymbol )
{
if ( d_data->symbol )
{
QRectF r( 0, 0, size.width(), size.height() );
d_data->symbol->drawSymbol( &painter, r );
}
}
return graphic;
}
