void PlotZozPicker::drawTracker( QPainter *painter )
{
if(painter->isActive()) {
QString text;
text.sprintf("%.2f, %.2f",
trackerText(trackerPosition()).text().split(",",QString::SkipEmptyParts).at(0).toFloat(),
trackerText(trackerPosition()).text().split(",",QString::SkipEmptyParts).at(1).toFloat()
);
emit position(text);
}
}
QRect CurveTracker::trackerRect( const QFont &font ) const
{
QRect r = QwtPlotPicker::trackerRect( font );
// align r to the first curve
const QwtPlotItemList curves = plot()->itemList( QwtPlotItem::Rtti_PlotCurve );
if ( curves.size() > 0 )
{
QPointF pos = invTransform( trackerPosition() );
const QLineF line = curveLineAt(
static_cast<const QwtPlotCurve *>( curves[0] ), pos.x() );
if ( !line.isNull() )
{
const double curveY = line.pointAt(
( pos.x() - line.p1().x() ) / line.dx() ).y();
pos.setY( curveY );
pos = transform( pos );
r.moveBottom( pos.y() );
}
}
return r;
}
void CurveTracker::activate(QPointF &p)
{
this->remove();
this->end();
this->begin();
this->append(p.toPoint());
this->move(p.toPoint());;
QPoint pp = trackerPosition();
//setMouseTracking(true);
}
