static inline void qwtDrawSvgSymbols( QPainter *painter,
const QPointF *points, int numPoints,
QSvgRenderer *renderer, const QwtSymbol &symbol )
{
if ( renderer == NULL || !renderer->isValid() )
return;
const QRectF viewBox = renderer->viewBoxF();
if ( viewBox.isEmpty() )
return;
QSizeF sz = symbol.size();
if ( !sz.isValid() )
sz = viewBox.size();
const double sx = sz.width() / viewBox.width();
const double sy = sz.height() / viewBox.height();
QPointF pinPoint = viewBox.center();
if ( symbol.isPinPointEnabled() )
pinPoint = symbol.pinPoint();
const double dx = sx * ( pinPoint.x() - viewBox.left() );
const double dy = sy * ( pinPoint.y() - viewBox.top() );
for ( int i = 0; i < numPoints; i++ )
{
const double x = points[i].x() - dx;
const double y = points[i].y() - dy;
renderer->render( painter,
QRectF( x, y, sz.width(), sz.height() ) );
}
}
static inline void qwtDrawGraphicSymbols( QPainter *painter,
const QPointF *points, int numPoints, const QwtGraphic &graphic,
const QwtSymbol &symbol )
{
const QRectF pointRect = graphic.controlPointRect();
if ( pointRect.isEmpty() )
return;
double sx = 1.0;
double sy = 1.0;
const QSize sz = symbol.size();
if ( sz.isValid() )
{
sx = sz.width() / pointRect.width();
sy = sz.height() / pointRect.height();
}
QPointF pinPoint = pointRect.center();
if ( symbol.isPinPointEnabled() )
pinPoint = symbol.pinPoint();
const QTransform transform = painter->transform();
for ( int i = 0; i < numPoints; i++ )
{
QTransform tr = transform;
tr.translate( points[i].x(), points[i].y() );
tr.scale( sx, sy );
tr.translate( -pinPoint.x(), -pinPoint.y() );
painter->setTransform( tr );
graphic.render( painter );
}
painter->setTransform( transform );
}
