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@@ -120,7 +120,7 @@ QgsCallout::DrawOrder QgsCallout::drawOrder() const |
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return OrderBelowAllLabels; |
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} |
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void QgsCallout::render( QgsRenderContext &context, QRectF rect, const double angle, const QgsGeometry &anchor, QgsCalloutContext &calloutContext ) |
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void QgsCallout::render( QgsRenderContext &context, const QRectF &rect, const double angle, const QgsGeometry &anchor, QgsCalloutContext &calloutContext ) |
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{ |
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if ( !mEnabled ) |
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return; |
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@@ -259,7 +259,7 @@ QgsCallout::LabelAnchorPoint QgsCallout::decodeLabelAnchorPoint( const QString & |
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return LabelPointOnExterior; |
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} |
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QgsGeometry QgsCallout::labelAnchorGeometry( QRectF rect, const double angle, LabelAnchorPoint anchor ) const |
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QgsGeometry QgsCallout::labelAnchorGeometry( const QRectF &rect, const double angle, LabelAnchorPoint anchor ) const |
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{ |
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QgsGeometry label; |
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switch ( anchor ) |
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@@ -309,7 +309,7 @@ QgsGeometry QgsCallout::labelAnchorGeometry( QRectF rect, const double angle, La |
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return label; |
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} |
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QgsGeometry QgsCallout::calloutLabelPoint( QRectF rect, const double angle, QgsCallout::LabelAnchorPoint anchor, QgsRenderContext &context, const QgsCallout::QgsCalloutContext &calloutContext, bool &pinned ) const |
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QgsGeometry QgsCallout::calloutLabelPoint( const QRectF &rect, const double angle, QgsCallout::LabelAnchorPoint anchor, QgsRenderContext &context, const QgsCallout::QgsCalloutContext &calloutContext, bool &pinned ) const |
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{ |
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pinned = false; |
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if ( dataDefinedProperties().isActive( QgsCallout::OriginX ) && dataDefinedProperties().isActive( QgsCallout::OriginY ) ) |
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@@ -470,6 +470,21 @@ QgsGeometry QgsCallout::calloutLineToPart( const QgsGeometry &labelGeometry, con |
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return line; |
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} |
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// |
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// QgsCallout::QgsCalloutContext |
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// |
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QgsCoordinateTransform QgsCallout::QgsCalloutContext::originalFeatureToMapTransform( const QgsRenderContext &renderContext ) const |
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{ |
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if ( !mOriginalFeatureToMapTransform.isValid() ) |
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{ |
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// lazy initialization, only create if needed... |
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mOriginalFeatureToMapTransform = QgsCoordinateTransform( originalFeatureCrs, renderContext.coordinateTransform().destinationCrs(), renderContext.transformContext() ); |
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} |
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return mOriginalFeatureToMapTransform; |
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} |
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// |
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// QgsSimpleLineCallout |
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// |
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@@ -598,7 +613,7 @@ void QgsSimpleLineCallout::setLineSymbol( QgsLineSymbol *symbol ) |
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mLineSymbol.reset( symbol ); |
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} |
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void QgsSimpleLineCallout::draw( QgsRenderContext &context, QRectF rect, const double angle, const QgsGeometry &anchor, QgsCalloutContext &calloutContext ) |
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void QgsSimpleLineCallout::draw( QgsRenderContext &context, const QRectF &rect, const double angle, const QgsGeometry &anchor, QgsCalloutContext &calloutContext ) |
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{ |
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LabelAnchorPoint labelAnchor = labelAnchorPoint(); |
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if ( dataDefinedProperties().isActive( QgsCallout::LabelAnchorPointPosition ) ) |
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@@ -613,7 +628,7 @@ void QgsSimpleLineCallout::draw( QgsRenderContext &context, QRectF rect, const d |
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if ( label.isNull() ) |
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return; |
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auto drawCalloutLine = [this, &context, &calloutContext, &label, originPinned]( const QgsAbstractGeometry * partAnchor ) |
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auto drawCalloutLine = [this, &context, &calloutContext, &label, &rect, angle, &anchor, originPinned]( const QgsAbstractGeometry * partAnchor ) |
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{ |
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bool destinationPinned = false; |
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QgsGeometry line = calloutLineToPart( label, partAnchor, context, calloutContext, destinationPinned ); |
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@@ -634,6 +649,9 @@ void QgsSimpleLineCallout::draw( QgsRenderContext &context, QRectF rect, const d |
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if ( minLengthPixels > 0 && lineLength < minLengthPixels ) |
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return; // too small! |
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std::unique_ptr< QgsCurve > calloutCurve( createCalloutLine( qgsgeometry_cast< const QgsLineString * >( line.constGet() )->startPoint(), |
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qgsgeometry_cast< const QgsLineString * >( line.constGet() )->endPoint(), context, rect, angle, anchor, calloutContext ) ); |
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double offsetFromAnchor = mOffsetFromAnchorDistance; |
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if ( dataDefinedProperties().isActive( QgsCallout::OffsetFromAnchor ) ) |
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{ |
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@@ -651,13 +669,10 @@ void QgsSimpleLineCallout::draw( QgsRenderContext &context, QRectF rect, const d |
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const double offsetFromLabelPixels = context.convertToPainterUnits( offsetFromLabel, mOffsetFromLabelUnit, mOffsetFromLabelScale ); |
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if ( offsetFromAnchorPixels > 0 || offsetFromLabelPixels > 0 ) |
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{ |
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if ( const QgsLineString *ls = qgsgeometry_cast< const QgsLineString * >( line.constGet() ) ) |
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{ |
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line = QgsGeometry( ls->curveSubstring( offsetFromLabelPixels, ls->length() - offsetFromAnchorPixels ) ); |
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} |
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calloutCurve.reset( calloutCurve->curveSubstring( offsetFromLabelPixels, calloutCurve->length() - offsetFromAnchorPixels ) ); |
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} |
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const QPolygonF points = line.asQPolygonF(); |
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const QPolygonF points = calloutCurve->asQPolygonF(); |
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if ( points.empty() ) |
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return; |
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@@ -688,7 +703,10 @@ void QgsSimpleLineCallout::draw( QgsRenderContext &context, QRectF rect, const d |
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} |
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} |
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QgsCurve *QgsSimpleLineCallout::createCalloutLine( const QgsPoint &start, const QgsPoint &end, QgsRenderContext &, const QRectF &, const double, const QgsGeometry &, QgsCallout::QgsCalloutContext & ) const |
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{ |
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return new QgsLineString( start, end ); |
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} |
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// |
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// QgsManhattanLineCallout |
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@@ -722,104 +740,8 @@ QgsManhattanLineCallout *QgsManhattanLineCallout::clone() const |
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return new QgsManhattanLineCallout( *this ); |
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} |
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void QgsManhattanLineCallout::draw( QgsRenderContext &context, QRectF rect, const double angle, const QgsGeometry &anchor, QgsCalloutContext &calloutContext ) |
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{ |
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LabelAnchorPoint labelAnchor = labelAnchorPoint(); |
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if ( dataDefinedProperties().isActive( QgsCallout::LabelAnchorPointPosition ) ) |
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{ |
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QString encodedAnchor = encodeLabelAnchorPoint( labelAnchor ); |
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context.expressionContext().setOriginalValueVariable( encodedAnchor ); |
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labelAnchor = decodeLabelAnchorPoint( dataDefinedProperties().valueAsString( QgsCallout::LabelAnchorPointPosition, context.expressionContext(), encodedAnchor ) ); |
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} |
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bool originPinned = false; |
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const QgsGeometry label = calloutLabelPoint( rect, angle, labelAnchor, context, calloutContext, originPinned ); |
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if ( label.isNull() ) |
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return; |
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auto drawCalloutLine = [this, &context, &calloutContext, &label, originPinned]( const QgsAbstractGeometry * partAnchor ) |
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{ |
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bool destinationPinned = false; |
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QgsGeometry line = calloutLineToPart( label, partAnchor, context, calloutContext, destinationPinned ); |
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if ( line.isEmpty() ) |
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return; |
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const double lineLength = line.length(); |
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if ( qgsDoubleNear( lineLength, 0 ) ) |
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return; |
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double minLength = minimumLength(); |
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if ( dataDefinedProperties().isActive( QgsCallout::MinimumCalloutLength ) ) |
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{ |
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minLength = dataDefinedProperties().valueAsDouble( QgsCallout::MinimumCalloutLength, context.expressionContext(), minLength ); |
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} |
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double minLengthPixels = context.convertToPainterUnits( minLength, minimumLengthUnit(), minimumLengthMapUnitScale() ); |
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if ( minLengthPixels > 0 && lineLength < minLengthPixels ) |
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return; // too small! |
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const QgsPoint start = qgsgeometry_cast< const QgsLineString * >( line.constGet() )->startPoint(); |
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const QgsPoint end = qgsgeometry_cast< const QgsLineString * >( line.constGet() )->endPoint(); |
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QgsPoint mid1 = QgsPoint( start.x(), end.y() ); |
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line = QgsGeometry::fromPolyline( QgsPolyline() << start << mid1 << end ); |
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double offsetFromAnchorDist = offsetFromAnchor(); |
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if ( dataDefinedProperties().isActive( QgsCallout::OffsetFromAnchor ) ) |
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{ |
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offsetFromAnchorDist = dataDefinedProperties().valueAsDouble( QgsCallout::OffsetFromAnchor, context.expressionContext(), offsetFromAnchorDist ); |
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} |
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const double offsetFromAnchorPixels = context.convertToPainterUnits( offsetFromAnchorDist, offsetFromAnchorUnit(), offsetFromAnchorMapUnitScale() ); |
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double offsetFromLabelDist = offsetFromLabel(); |
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if ( dataDefinedProperties().isActive( QgsCallout::OffsetFromLabel ) ) |
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{ |
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offsetFromLabelDist = dataDefinedProperties().valueAsDouble( QgsCallout::OffsetFromLabel, context.expressionContext(), offsetFromLabelDist ); |
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} |
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const double offsetFromLabelPixels = context.convertToPainterUnits( offsetFromLabelDist, offsetFromAnchorUnit(), offsetFromAnchorMapUnitScale() ); |
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if ( offsetFromAnchorPixels > 0 || offsetFromLabelPixels > 0 ) |
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{ |
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if ( QgsLineString *ls = qgsgeometry_cast< QgsLineString * >( line.get() ) ) |
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{ |
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line = QgsGeometry( ls->curveSubstring( offsetFromLabelPixels, ls->length() - offsetFromAnchorPixels ) ); |
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} |
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} |
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const QPolygonF points = line.asQPolygonF(); |
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if ( points.empty() ) |
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return; |
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QgsCalloutPosition position; |
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position.setOrigin( context.mapToPixel().toMapCoordinates( points.at( 0 ).x(), points.at( 0 ).y() ).toQPointF() ); |
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position.setOriginIsPinned( originPinned ); |
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position.setDestination( context.mapToPixel().toMapCoordinates( points.constLast().x(), points.constLast().y() ).toQPointF() ); |
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position.setDestinationIsPinned( destinationPinned ); |
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calloutContext.addCalloutPosition( position ); |
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lineSymbol()->renderPolyline( points, nullptr, context ); |
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}; |
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bool toAllParts = drawCalloutToAllParts(); |
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if ( dataDefinedProperties().isActive( QgsCallout::DrawCalloutToAllParts ) ) |
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{ |
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context.expressionContext().setOriginalValueVariable( toAllParts ); |
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toAllParts = dataDefinedProperties().valueAsBool( QgsCallout::DrawCalloutToAllParts, context.expressionContext(), toAllParts ); |
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} |
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if ( calloutContext.allFeaturePartsLabeled || !toAllParts ) |
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drawCalloutLine( anchor.constGet() ); |
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else |
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{ |
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for ( auto it = anchor.const_parts_begin(); it != anchor.const_parts_end(); ++it ) |
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drawCalloutLine( *it ); |
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} |
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} |
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QgsCoordinateTransform QgsCallout::QgsCalloutContext::originalFeatureToMapTransform( const QgsRenderContext &renderContext ) const |
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QgsCurve *QgsManhattanLineCallout::createCalloutLine( const QgsPoint &start, const QgsPoint &end, QgsRenderContext &, const QRectF &, const double, const QgsGeometry &, QgsCallout::QgsCalloutContext & ) const |
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{ |
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if ( !mOriginalFeatureToMapTransform.isValid() ) |
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{ |
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// lazy initialization, only create if needed... |
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mOriginalFeatureToMapTransform = QgsCoordinateTransform( originalFeatureCrs, renderContext.coordinateTransform().destinationCrs(), renderContext.transformContext() ); |
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} |
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return mOriginalFeatureToMapTransform; |
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QgsPoint mid1 = QgsPoint( start.x(), end.y() ); |
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return new QgsLineString( QVector< QgsPoint >() << start << mid1 << end ); |
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} |
