/*!
Print the legend item into a given rectangle.
\param painter Painter
\param widget Widget representing a legend item
\param rect Bounding rectangle
\note When widget is not derived from QwtLegendItem renderLegendItem
does nothing and needs to be overloaded
*/
void QwtPolarRenderer::renderLegendItem( QPainter *painter,
const QWidget *widget, const QRectF &rect ) const
{
const QwtLegendItem *item = qobject_cast<const QwtLegendItem *>( widget );
if ( item )
{
const QSize sz = item->identifierSize();
const QRectF identifierRect( rect.x() + item->margin(),
rect.center().y() - 0.5 * sz.height(), sz.width(), sz.height() );
QwtLegendItemManager *itemManger = d_data->plot->legend()->find( item );
if ( itemManger )
{
painter->save();
painter->setClipRect( identifierRect, Qt::IntersectClip );
itemManger->drawLegendIdentifier( painter, identifierRect );
painter->restore();
}
// Label
QRectF titleRect = rect;
titleRect.setX( identifierRect.right() + 2 * item->spacing() );
painter->setFont( item->font() );
item->text().draw( painter, titleRect );
}
}
/*!
Print the legend item into a given rectangle.
\param plot Plot widget
\param painter Painter
\param widget Widget representing a legend item
\param rect Bounding rectangle
\note When widget is not derived from QwtLegendItem renderLegendItem
does nothing and needs to be overloaded
*/
void QwtPlotRenderer::renderLegendItem( const QwtPlot *plot,
QPainter *painter, const QWidget *widget, const QRectF &rect ) const
{
const QwtLegendItem *item = qobject_cast<const QwtLegendItem *>( widget );
if ( item )
{
const QRect identifierRect(
rect.x() + item->margin(), rect.y(),
item->identifierSize().width(), rect.height() );
QwtLegendItemManager *itemManger = plot->legend()->find( item );
if ( itemManger )
{
painter->save();
itemManger->drawLegendIdentifier( painter, identifierRect );
painter->restore();
}
// Label
QRectF titleRect = rect;
titleRect.setX( identifierRect.right() + 2 * item->spacing() );
painter->setFont( item->font() );
item->text().draw( painter, titleRect );
}
}
/*!
Set the legend display policy to:
\param policy Legend display policy
\param mode Identifier mode (or'd ShowLine, ShowSymbol, ShowText)
\sa displayPolicy, LegendDisplayPolicy
*/
void QwtLegend::setDisplayPolicy(LegendDisplayPolicy policy, int mode)
{
d_data->displayPolicy = policy;
if (-1 != mode)
d_data->identifierMode = mode;
QMap<QWidget *, const QwtLegendItemManager *> &map =
d_data->map.widgetMap();
QMap<QWidget *, const QwtLegendItemManager *>::iterator it;
for ( it = map.begin(); it != map.end(); ++it )
{
#if QT_VERSION < 0x040000
QwtLegendItemManager *item = (QwtLegendItemManager *)it.data();
#else
QwtLegendItemManager *item = (QwtLegendItemManager *)it.value();
#endif
if ( item )
item->updateLegend(this);
}
}
/*!
Render the legend item into a given rectangle.
\param plot Plot widget
\param painter Painter
\param widget Widget representing a legend item
\param rect Bounding rectangle
\note When widget is not derived from QwtLegendItem renderLegendItem
does nothing and needs to be overloaded
*/
void QwtPlotRenderer::renderLegendItem( const QwtPlot *plot,
QPainter *painter, const QWidget *widget, const QRectF &rect ) const
{
if ( !( d_data->discardFlags & DiscardBackground ) )
{
if ( widget->autoFillBackground() ||
widget->testAttribute( Qt::WA_StyledBackground ) )
{
qwtRenderBackground( painter, rect, widget );
}
}
const QwtLegendItem *item = qobject_cast<const QwtLegendItem *>( widget );
if ( item )
{
const QSize sz = item->identifierSize();
const QRectF identifierRect( rect.x() + item->margin(),
rect.center().y() - 0.5 * sz.height(), sz.width(), sz.height() );
QwtLegendItemManager *itemManger = plot->legend()->find( item );
if ( itemManger )
{
painter->save();
painter->setClipRect( identifierRect, Qt::IntersectClip );
itemManger->drawLegendIdentifier( painter, identifierRect );
painter->restore();
}
// Label
QRectF titleRect = rect;
titleRect.setX( identifierRect.right() + 2 * item->spacing() );
painter->setFont( item->font() );
item->text().draw( painter, titleRect );
}
}
