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support linear gradients in the arc renderer

This commit is contained in:
Peter Hartmann 2021-10-13 12:22:20 +02:00
parent c28c6df231
commit 1ccd19392b
1 changed files with 17 additions and 2 deletions
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19
src/nodes/QskArcRenderer.h
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@ -10,6 +10,7 @@
#include "QskGlobal.h" #include "QskGlobal.h"
#include "QskGradient.h" #include "QskGradient.h"
#include <QDebug>
#include <QPainter> #include <QPainter>
#include <QRect> #include <QRect>
@ -34,7 +35,22 @@ void QskArcRenderer::renderArc(const QRectF& rect,
stops.append( s ); stops.append( s );
} }
if( gradient.orientation() == QskGradient::Radial ) if( gradient.orientation() == QskGradient::Horizontal
|| gradient.orientation() == QskGradient::Vertical )
{
QPointF finalStop = ( gradient.orientation() == QskGradient::Horizontal )
? QPointF( rect.width(), 0 ) : QPointF( 0, rect.height() );
QLinearGradient linearGradient( { 0, 0 }, finalStop );
linearGradient.setStops( stops );
painter->setPen( QPen( linearGradient, metrics.width(), Qt::SolidLine,
Qt::FlatCap ) );
}
else if( gradient.orientation() == QskGradient::Diagonal )
{
qWarning() << "cannot paint a diagonal gradient with QPainter";
}
else if( gradient.orientation() == QskGradient::Radial )
{ {
QRadialGradient radialGradient( rect.center(), qMin( rect.width(), QRadialGradient radialGradient( rect.center(), qMin( rect.width(),
rect.height() ) ); rect.height() ) );
@ -50,7 +66,6 @@ void QskArcRenderer::renderArc(const QRectF& rect,
painter->setPen( QPen( conicalGradient, metrics.width(), Qt::SolidLine, painter->setPen( QPen( conicalGradient, metrics.width(), Qt::SolidLine,
Qt::FlatCap ) ); Qt::FlatCap ) );
} }
// ### add other types
painter->drawArc( rect, metrics.startAngle(), metrics.spanAngle() ); painter->drawArc( rect, metrics.startAngle(), metrics.spanAngle() );
} }