static inline QRectF qwtScaledBoundingRect(
const QwtGraphic &graphic, const QSizeF size )
{
QSizeF scaledSize = size;
if ( scaledSize.isEmpty() )
scaledSize = graphic.defaultSize();
const QSizeF sz = graphic.controlPointRect().size();
double sx = 1.0;
if ( sz.width() > 0.0 )
sx = scaledSize.width() / sz.width();
double sy = 1.0;
if ( sz.height() > 0.0 )
sy = scaledSize.height() / sz.height();
return graphic.scaledBoundingRect( sx, sy );
}
/*!
Draw an entry on the legend
\param painter Qt Painter
\param plotItem Plot item, represented by the entry
\param data Attributes of the legend entry
\param rect Bounding rectangle for the entry
*/
void QwtPlotLegendItem::drawLegendData( QPainter *painter,
const QwtPlotItem *plotItem, const QwtLegendData &data,
const QRectF &rect ) const
{
Q_UNUSED( plotItem );
const int m = d_data->itemMargin;
const QRectF r = rect.toRect().adjusted( m, m, -m, -m );
painter->setClipRect( r, Qt::IntersectClip );
int titleOff = 0;
const QwtGraphic graphic = data.icon();
if ( !graphic.isEmpty() )
{
QRectF iconRect( r.topLeft(), graphic.defaultSize() );
iconRect.moveCenter(
QPoint( iconRect.center().x(), rect.center().y() ) );
graphic.render( painter, iconRect, Qt::KeepAspectRatio );
titleOff += iconRect.width() + d_data->itemSpacing;
}
const QwtText text = data.title();
if ( !text.isEmpty() )
{
painter->setPen( textPen() );
painter->setFont( font() );
const QRectF textRect = r.adjusted( titleOff, 0, 0, 0 );
text.draw( painter, textRect );
}
}
