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draw arcs with painter path

This commit is contained in:
Peter Hartmann 2021-10-26 16:51:19 +02:00
parent d5b3fe0dba
commit 11cabf7f27
1 changed files with 15 additions and 21 deletions
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36
src/nodes/QskArcRenderer.cpp
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@ -51,29 +51,23 @@ void QskArcRenderer::renderArc( const QRectF& rect,
}
painter->setPen( QPen( brush, metrics.width(), Qt::SolidLine, Qt::FlatCap ) );
painter->drawArc( rect, metrics.startAngle(), metrics.spanAngle() );
if( borderMetrics.width( Qsk::Inner ) > 0 )
QPainterPath path( { rect.x() + rect.width() / 2, 0 } ); // 12 o'clock pos
path.arcMoveTo( rect, 90 );
path.arcTo( rect, metrics.startAngle() + 90, metrics.spanAngle() / 16 );
painter->drawPath( path );
if( !borderMetrics.isNull() )
{
// draw inner border:
const qreal i = metrics.width() / 2;
const auto innerRect = rect.marginsRemoved( { i, i, i, i } );
const QColor innerColor = borderColors.color( Qsk::Inner );
QPen pen( borderColors.color( Qsk::Outer ), borderMetrics.outerWidth(),
Qt::SolidLine, Qt::FlatCap );
QPainterPathStroker stroker( pen );
const qreal strokerWidth = metrics.width() - borderMetrics.outerWidth();
stroker.setWidth( strokerWidth );
QPainterPath strokePath = stroker.createStroke( path );
painter->setPen( QPen( innerColor, borderMetrics.width( Qsk::Inner ),
Qt::SolidLine, Qt::FlatCap ) );
painter->drawArc( innerRect, metrics.startAngle(), metrics.spanAngle() );
}
if( borderMetrics.width( Qsk::Outer ) > 0 )
{
// draw outer border:
const qreal o = ( metrics.width() - borderMetrics.width( Qsk::Outer ) ) / 2;
const auto outerRect = rect.marginsAdded( { o, o, o, o } );
const QColor outerColor = borderColors.color( Qsk::Outer );
painter->setPen( QPen( outerColor, borderMetrics.width( Qsk::Outer ),
Qt::SolidLine, Qt::FlatCap ) );
painter->drawArc( outerRect, metrics.startAngle(), metrics.spanAngle() );
painter->setPen( pen );
painter->drawPath( strokePath );
}
}