/*!
Paint the contour lines
\param painter Painter
\param xMap Maps x-values into pixel coordinates.
\param yMap Maps y-values into pixel coordinates.
\param contourLines Contour lines
\sa renderContourLines(), defaultContourPen(), contourPen()
*/
void QwtPlotSpectrogram::drawContourLines( QPainter *painter,
const QwtScaleMap &xMap, const QwtScaleMap &yMap,
const QwtRasterData::ContourLines &contourLines ) const
{
if ( d_data->data == NULL )
return;
const int numLevels = d_data->contourLevels.size();
for ( int l = 0; l < numLevels; l++ )
{
const double level = d_data->contourLevels[l];
QPen pen = defaultContourPen();
if ( pen.style() == Qt::NoPen )
pen = contourPen( level );
if ( pen.style() == Qt::NoPen )
continue;
painter->setPen( pen );
const QPolygonF &lines = contourLines[level];
for ( int i = 0; i < lines.size(); i += 2 )
{
const QPointF p1( xMap.transform( lines[i].x() ),
yMap.transform( lines[i].y() ) );
const QPointF p2( xMap.transform( lines[i+1].x() ),
yMap.transform( lines[i+1].y() ) );
QwtPainter::drawLine( painter, p1, p2 );
}
}
}
void Spectrogram::drawContourLines (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QwtRasterData::ContourLines &contourLines) const
{
//QwtPlotSpectrogram::drawContourLines(p, xMap, yMap, contourLines);
QwtValueList levels = contourLevels();
const int numLevels = (int)levels.size();
for (int l = 0; l < numLevels; l++){
const double level = levels[l];
QPen pen = defaultContourPen();
if ( pen.style() == Qt::NoPen )
pen = contourPen(level);
if ( pen.style() == Qt::NoPen )
continue;
p->setPen(QwtPainter::scaledPen(pen));
const QPolygonF &lines = contourLines[level];
for ( int i = 0; i < (int)lines.size(); i += 2 ){
const QPointF p1( xMap.xTransform(lines[i].x()),
yMap.transform(lines[i].y()) );
const QPointF p2( xMap.xTransform(lines[i + 1].x()),
yMap.transform(lines[i + 1].y()) );
p->drawLine(p1, p2);
}
}
if (d_show_labels)
updateLabels(p, xMap, yMap, contourLines);
}
