QRectF QgsEllipseSymbolLayer::bounds( QPointF point, QgsSymbolRenderContext &context )
{
QSizeF size = calculateSize( context );
bool hasDataDefinedRotation = false;
QPointF offset;
double angle = 0;
calculateOffsetAndRotation( context, size.width(), size.height(), hasDataDefinedRotation, offset, angle );
QMatrix transform;
// move to the desired position
transform.translate( point.x() + offset.x(), point.y() + offset.y() );
if ( !qgsDoubleNear( angle, 0.0 ) )
transform.rotate( angle );
double penWidth = 0.0;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyStrokeWidth ) )
{
context.setOriginalValueVariable( mStrokeWidth );
QVariant exprVal = mDataDefinedProperties.value( QgsSymbolLayer::PropertyStrokeWidth, context.renderContext().expressionContext() );
if ( exprVal.isValid() )
{
bool ok;
double strokeWidth = exprVal.toDouble( &ok );
if ( ok )
{
penWidth = context.renderContext().convertToPainterUnits( strokeWidth, mStrokeWidthUnit, mStrokeWidthMapUnitScale );
}
}
}
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyStrokeStyle ) )
{
context.setOriginalValueVariable( QgsSymbolLayerUtils::encodePenStyle( mStrokeStyle ) );
QVariant exprVal = mDataDefinedProperties.value( QgsSymbolLayer::PropertyStrokeStyle, context.renderContext().expressionContext() );
if ( exprVal.isValid() && exprVal.toString() == QLatin1String( "no" ) )
{
penWidth = 0.0;
}
}
//antialiasing, add 1 pixel
penWidth += 1;
QRectF symbolBounds = transform.mapRect( QRectF( -size.width() / 2.0,
-size.height() / 2.0,
size.width(),
size.height() ) );
//extend bounds by pen width / 2.0
symbolBounds.adjust( -penWidth / 2.0, -penWidth / 2.0,
penWidth / 2.0, penWidth / 2.0 );
return symbolBounds;
}
void QgsMarkerSymbolLayer::markerOffset( QgsSymbolRenderContext& context, double width, double height,
QgsUnitTypes::RenderUnit widthUnit, QgsUnitTypes::RenderUnit heightUnit,
double& offsetX, double& offsetY, const QgsMapUnitScale& widthMapUnitScale, const QgsMapUnitScale& heightMapUnitScale ) const
{
offsetX = mOffset.x();
offsetY = mOffset.y();
if ( hasDataDefinedProperty( QgsSymbolLayer::EXPR_OFFSET ) )
{
context.setOriginalValueVariable( QgsSymbolLayerUtils::encodePoint( mOffset ) );
QPointF offset = QgsSymbolLayerUtils::decodePoint( evaluateDataDefinedProperty( QgsSymbolLayer::EXPR_OFFSET, context ).toString() );
offsetX = offset.x();
offsetY = offset.y();
}
offsetX = QgsSymbolLayerUtils::convertToPainterUnits( context.renderContext(), offsetX, mOffsetUnit, mOffsetMapUnitScale );
offsetY = QgsSymbolLayerUtils::convertToPainterUnits( context.renderContext(), offsetY, mOffsetUnit, mOffsetMapUnitScale );
HorizontalAnchorPoint horizontalAnchorPoint = mHorizontalAnchorPoint;
VerticalAnchorPoint verticalAnchorPoint = mVerticalAnchorPoint;
if ( hasDataDefinedProperty( QgsSymbolLayer::EXPR_HORIZONTAL_ANCHOR_POINT ) )
{
horizontalAnchorPoint = decodeHorizontalAnchorPoint( evaluateDataDefinedProperty( QgsSymbolLayer::EXPR_HORIZONTAL_ANCHOR_POINT , context ).toString() );
}
if ( hasDataDefinedProperty( QgsSymbolLayer::EXPR_VERTICAL_ANCHOR_POINT ) )
{
verticalAnchorPoint = decodeVerticalAnchorPoint( evaluateDataDefinedProperty( QgsSymbolLayer::EXPR_VERTICAL_ANCHOR_POINT, context ).toString() );
}
//correct horizontal position according to anchor point
if ( horizontalAnchorPoint == HCenter && verticalAnchorPoint == VCenter )
{
return;
}
double anchorPointCorrectionX = QgsSymbolLayerUtils::convertToPainterUnits( context.renderContext(), width, widthUnit, widthMapUnitScale ) / 2.0;
double anchorPointCorrectionY = QgsSymbolLayerUtils::convertToPainterUnits( context.renderContext(), height, heightUnit, heightMapUnitScale ) / 2.0;
if ( horizontalAnchorPoint == Left )
{
offsetX += anchorPointCorrectionX;
}
else if ( horizontalAnchorPoint == Right )
{
offsetX -= anchorPointCorrectionX;
}
//correct vertical position according to anchor point
if ( verticalAnchorPoint == Top )
{
offsetY += anchorPointCorrectionY;
}
else if ( verticalAnchorPoint == Bottom )
{
offsetY -= anchorPointCorrectionY;
}
}
QSizeF QgsEllipseSymbolLayer::calculateSize( QgsSymbolRenderContext &context, double *scaledWidth, double *scaledHeight )
{
double width = 0;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyWidth ) ) //1. priority: data defined setting on symbol layer le
{
context.setOriginalValueVariable( mSymbolWidth );
width = mDataDefinedProperties.valueAsDouble( QgsSymbolLayer::PropertyWidth, context.renderContext().expressionContext(), mSymbolWidth );
}
else //2. priority: global width setting
{
width = mSymbolWidth;
}
if ( scaledWidth )
{
*scaledWidth = width;
}
width = context.renderContext().convertToPainterUnits( width, mSymbolWidthUnit, mSymbolHeightMapUnitScale );
double height = 0;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyHeight ) ) //1. priority: data defined setting on symbol layer level
{
context.setOriginalValueVariable( mSymbolHeight );
height = mDataDefinedProperties.valueAsDouble( QgsSymbolLayer::PropertyHeight, context.renderContext().expressionContext(), mSymbolHeight );
}
else //2. priority: global height setting
{
height = mSymbolHeight;
}
if ( scaledHeight )
{
*scaledHeight = height;
}
height = context.renderContext().convertToPainterUnits( height, mSymbolHeightUnit, mSymbolHeightMapUnitScale );
return QSizeF( width, height );
}
void QgsEllipseSymbolLayer::calculateOffsetAndRotation( QgsSymbolRenderContext &context,
double scaledWidth,
double scaledHeight,
bool &hasDataDefinedRotation,
QPointF &offset,
double &angle ) const
{
double offsetX = 0;
double offsetY = 0;
markerOffset( context, scaledWidth, scaledHeight, mSymbolWidthUnit, mSymbolHeightUnit, offsetX, offsetY, mSymbolWidthMapUnitScale, mSymbolHeightMapUnitScale );
offset = QPointF( offsetX, offsetY );
//priority for rotation: 1. data defined symbol level, 2. symbol layer rotation (mAngle)
bool ok = true;
angle = mAngle + mLineAngle;
bool usingDataDefinedRotation = false;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyAngle ) )
{
context.setOriginalValueVariable( angle );
angle = mDataDefinedProperties.valueAsDouble( QgsSymbolLayer::PropertyAngle, context.renderContext().expressionContext(), 0 ) + mLineAngle;
usingDataDefinedRotation = ok;
}
hasDataDefinedRotation = context.renderHints() & QgsSymbol::DynamicRotation || usingDataDefinedRotation;
if ( hasDataDefinedRotation )
{
// For non-point markers, "dataDefinedRotation" means following the
// shape (shape-data defined). For them, "field-data defined" does
// not work at all. TODO: if "field-data defined" ever gets implemented
// we'll need a way to distinguish here between the two, possibly
// using another flag in renderHints()
const QgsFeature *f = context.feature();
if ( f )
{
const QgsGeometry g = f->geometry();
if ( !g.isNull() && g.type() == QgsWkbTypes::PointGeometry )
{
const QgsMapToPixel &m2p = context.renderContext().mapToPixel();
angle += m2p.mapRotation();
}
}
}
if ( angle )
offset = _rotatedOffset( offset, angle );
}
void QgsMarkerSymbolLayer::markerOffset( QgsSymbolRenderContext &context, double width, double height,
QgsUnitTypes::RenderUnit widthUnit, QgsUnitTypes::RenderUnit heightUnit,
double &offsetX, double &offsetY, const QgsMapUnitScale &widthMapUnitScale, const QgsMapUnitScale &heightMapUnitScale ) const
{
offsetX = mOffset.x();
offsetY = mOffset.y();
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyOffset ) )
{
context.setOriginalValueVariable( QgsSymbolLayerUtils::encodePoint( mOffset ) );
QVariant exprVal = mDataDefinedProperties.value( QgsSymbolLayer::PropertyOffset, context.renderContext().expressionContext() );
if ( exprVal.isValid() )
{
QPointF offset = QgsSymbolLayerUtils::decodePoint( exprVal.toString() );
offsetX = offset.x();
offsetY = offset.y();
}
}
offsetX = context.renderContext().convertToPainterUnits( offsetX, mOffsetUnit, mOffsetMapUnitScale );
offsetY = context.renderContext().convertToPainterUnits( offsetY, mOffsetUnit, mOffsetMapUnitScale );
HorizontalAnchorPoint horizontalAnchorPoint = mHorizontalAnchorPoint;
VerticalAnchorPoint verticalAnchorPoint = mVerticalAnchorPoint;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyHorizontalAnchor ) )
{
QVariant exprVal = mDataDefinedProperties.value( QgsSymbolLayer::PropertyHorizontalAnchor, context.renderContext().expressionContext() );
if ( exprVal.isValid() )
{
horizontalAnchorPoint = decodeHorizontalAnchorPoint( exprVal.toString() );
}
}
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyVerticalAnchor ) )
{
QVariant exprVal = mDataDefinedProperties.value( QgsSymbolLayer::PropertyVerticalAnchor, context.renderContext().expressionContext() );
if ( exprVal.isValid() )
{
verticalAnchorPoint = decodeVerticalAnchorPoint( exprVal.toString() );
}
}
//correct horizontal position according to anchor point
if ( horizontalAnchorPoint == HCenter && verticalAnchorPoint == VCenter )
{
return;
}
double anchorPointCorrectionX = context.renderContext().convertToPainterUnits( width, widthUnit, widthMapUnitScale ) / 2.0;
double anchorPointCorrectionY = context.renderContext().convertToPainterUnits( height, heightUnit, heightMapUnitScale ) / 2.0;
if ( horizontalAnchorPoint == Left )
{
offsetX += anchorPointCorrectionX;
}
else if ( horizontalAnchorPoint == Right )
{
offsetX -= anchorPointCorrectionX;
}
//correct vertical position according to anchor point
if ( verticalAnchorPoint == Top )
{
offsetY += anchorPointCorrectionY;
}
else if ( verticalAnchorPoint == Bottom )
{
offsetY -= anchorPointCorrectionY;
}
}
bool QgsEllipseSymbolLayer::writeDxf( QgsDxfExport &e, double mmMapUnitScaleFactor, const QString &layerName, QgsSymbolRenderContext &context, QPointF shift ) const
{
//width
double symbolWidth = mSymbolWidth;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyWidth ) ) //1. priority: data defined setting on symbol layer le
{
context.setOriginalValueVariable( mSymbolWidth );
symbolWidth = mDataDefinedProperties.valueAsDouble( QgsSymbolLayer::PropertyWidth, context.renderContext().expressionContext(), mSymbolWidth );
}
if ( mSymbolWidthUnit == QgsUnitTypes::RenderMillimeters )
{
symbolWidth *= mmMapUnitScaleFactor;
}
//height
double symbolHeight = mSymbolHeight;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyHeight ) ) //1. priority: data defined setting on symbol layer level
{
context.setOriginalValueVariable( mSymbolHeight );
symbolWidth = mDataDefinedProperties.valueAsDouble( QgsSymbolLayer::PropertyHeight, context.renderContext().expressionContext(), mSymbolHeight );
}
if ( mSymbolHeightUnit == QgsUnitTypes::RenderMillimeters )
{
symbolHeight *= mmMapUnitScaleFactor;
}
//stroke width
double strokeWidth = mStrokeWidth;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyStrokeWidth ) )
{
context.setOriginalValueVariable( mStrokeWidth );
strokeWidth = mDataDefinedProperties.valueAsDouble( QgsSymbolLayer::PropertyStrokeWidth, context.renderContext().expressionContext(), mStrokeWidth );
}
if ( mStrokeWidthUnit == QgsUnitTypes::RenderMillimeters )
{
strokeWidth *= strokeWidth;
}
//fill color
QColor fc = mColor;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyFillColor ) )
{
context.setOriginalValueVariable( QgsSymbolLayerUtils::encodeColor( mColor ) );
fc = mDataDefinedProperties.valueAsColor( QgsSymbolLayer::PropertyFillColor, context.renderContext().expressionContext(), mColor );
}
//stroke color
QColor oc = mStrokeColor;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyStrokeColor ) )
{
context.setOriginalValueVariable( QgsSymbolLayerUtils::encodeColor( mStrokeColor ) );
oc = mDataDefinedProperties.valueAsColor( QgsSymbolLayer::PropertyStrokeColor, context.renderContext().expressionContext(), mStrokeColor );
}
//symbol name
QString symbolName = mSymbolName;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyName ) )
{
context.setOriginalValueVariable( mSymbolName );
symbolName = mDataDefinedProperties.valueAsString( QgsSymbolLayer::PropertyName, context.renderContext().expressionContext(), mSymbolName );
}
//offset
double offsetX = 0;
double offsetY = 0;
markerOffset( context, offsetX, offsetY );
QPointF off( offsetX, offsetY );
//priority for rotation: 1. data defined symbol level, 2. symbol layer rotation (mAngle)
double rotation = 0.0;
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyAngle ) )
{
context.setOriginalValueVariable( mAngle );
rotation = mDataDefinedProperties.valueAsDouble( QgsSymbolLayer::PropertyAngle, context.renderContext().expressionContext(), mAngle ) + mLineAngle;
}
else if ( !qgsDoubleNear( mAngle + mLineAngle, 0.0 ) )
{
rotation = mAngle + mLineAngle;
}
rotation = -rotation; //rotation in Qt is counterclockwise
if ( rotation )
off = _rotatedOffset( off, rotation );
QTransform t;
t.translate( shift.x() + offsetX, shift.y() + offsetY );
if ( !qgsDoubleNear( rotation, 0.0 ) )
t.rotate( rotation );
double halfWidth = symbolWidth / 2.0;
double halfHeight = symbolHeight / 2.0;
if ( symbolName == QLatin1String( "circle" ) )
{
if ( qgsDoubleNear( halfWidth, halfHeight ) )
{
QgsPoint pt( t.map( QPointF( 0, 0 ) ) );
e.writeFilledCircle( layerName, oc, pt, halfWidth );
}
else
{
QgsPointSequence line;
double stepsize = 2 * M_PI / 40;
for ( int i = 0; i < 39; ++i )
{
double angle = stepsize * i;
double x = halfWidth * std::cos( angle );
double y = halfHeight * std::sin( angle );
line << QgsPoint( t.map( QPointF( x, y ) ) );
}
//close ellipse with first point
line << line.at( 0 );
if ( mBrush.style() != Qt::NoBrush )
e.writePolygon( QgsRingSequence() << line, layerName, QStringLiteral( "SOLID" ), fc );
if ( mPen.style() != Qt::NoPen )
e.writePolyline( line, layerName, QStringLiteral( "CONTINUOUS" ), oc, strokeWidth );
}
}
else if ( symbolName == QLatin1String( "rectangle" ) )
{
QgsPointSequence p;
p << QgsPoint( t.map( QPointF( -halfWidth, -halfHeight ) ) )
<< QgsPoint( t.map( QPointF( halfWidth, -halfHeight ) ) )
<< QgsPoint( t.map( QPointF( halfWidth, halfHeight ) ) )
<< QgsPoint( t.map( QPointF( -halfWidth, halfHeight ) ) );
p << p[0];
if ( mBrush.style() != Qt::NoBrush )
e.writePolygon( QgsRingSequence() << p, layerName, QStringLiteral( "SOLID" ), fc );
if ( mPen.style() != Qt::NoPen )
e.writePolyline( p, layerName, QStringLiteral( "CONTINUOUS" ), oc, strokeWidth );
return true;
}
else if ( symbolName == QLatin1String( "cross" ) && mPen.style() != Qt::NoPen )
{
e.writePolyline( QgsPointSequence()
<< QgsPoint( t.map( QPointF( -halfWidth, 0 ) ) )
<< QgsPoint( t.map( QPointF( halfWidth, 0 ) ) ),
layerName, QStringLiteral( "CONTINUOUS" ), oc, strokeWidth );
e.writePolyline( QgsPointSequence()
<< QgsPoint( t.map( QPointF( 0, halfHeight ) ) )
<< QgsPoint( t.map( QPointF( 0, -halfHeight ) ) ),
layerName, QStringLiteral( "CONTINUOUS" ), oc, strokeWidth );
return true;
}
else if ( symbolName == QLatin1String( "triangle" ) )
{
QgsPointSequence p;
p << QgsPoint( t.map( QPointF( -halfWidth, -halfHeight ) ) )
<< QgsPoint( t.map( QPointF( halfWidth, -halfHeight ) ) )
<< QgsPoint( t.map( QPointF( 0, halfHeight ) ) );
p << p[0];
if ( mBrush.style() != Qt::NoBrush )
e.writePolygon( QgsRingSequence() << p, layerName, QStringLiteral( "SOLID" ), fc );
if ( mPen.style() != Qt::NoPen )
e.writePolyline( p, layerName, QStringLiteral( "CONTINUOUS" ), oc, strokeWidth );
return true;
}
return false; //soon...
}
void QgsEllipseSymbolLayer::renderPoint( QPointF point, QgsSymbolRenderContext &context )
{
double scaledWidth = mSymbolWidth;
double scaledHeight = mSymbolHeight;
if ( mDataDefinedProperties.hasActiveProperties() )
{
bool ok;
context.setOriginalValueVariable( mStrokeWidth );
QVariant exprVal = mDataDefinedProperties.value( QgsSymbolLayer::PropertyStrokeWidth, context.renderContext().expressionContext() );
if ( exprVal.isValid() )
{
double width = exprVal.toDouble( &ok );
if ( ok )
{
width = context.renderContext().convertToPainterUnits( width, mStrokeWidthUnit, mStrokeWidthMapUnitScale );
mPen.setWidthF( width );
}
}
context.setOriginalValueVariable( QgsSymbolLayerUtils::encodePenStyle( mStrokeStyle ) );
exprVal = mDataDefinedProperties.value( QgsSymbolLayer::PropertyStrokeStyle, context.renderContext().expressionContext() );
if ( exprVal.isValid() )
{
mPen.setStyle( QgsSymbolLayerUtils::decodePenStyle( exprVal.toString() ) );
}
context.setOriginalValueVariable( QgsSymbolLayerUtils::encodePenJoinStyle( mPenJoinStyle ) );
exprVal = mDataDefinedProperties.value( QgsSymbolLayer::PropertyJoinStyle, context.renderContext().expressionContext() );
if ( exprVal.isValid() )
{
mPen.setJoinStyle( QgsSymbolLayerUtils::decodePenJoinStyle( exprVal.toString() ) );
}
context.setOriginalValueVariable( QgsSymbolLayerUtils::encodeColor( mColor ) );
mBrush.setColor( mDataDefinedProperties.valueAsColor( QgsSymbolLayer::PropertyFillColor, context.renderContext().expressionContext(), mColor ) );
context.setOriginalValueVariable( QgsSymbolLayerUtils::encodeColor( mStrokeColor ) );
mPen.setColor( mDataDefinedProperties.valueAsColor( QgsSymbolLayer::PropertyStrokeColor, context.renderContext().expressionContext(), mStrokeColor ) );
if ( mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyWidth ) || mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyHeight ) || mDataDefinedProperties.isActive( QgsSymbolLayer::PropertyName ) )
{
QString symbolName = mSymbolName;
context.setOriginalValueVariable( mSymbolName );
exprVal = mDataDefinedProperties.value( QgsSymbolLayer::PropertyName, context.renderContext().expressionContext() );
if ( exprVal.isValid() )
{
symbolName = exprVal.toString();
}
preparePath( symbolName, context, &scaledWidth, &scaledHeight, context.feature() );
}
}
//offset and rotation
bool hasDataDefinedRotation = false;
QPointF offset;
double angle = 0;
calculateOffsetAndRotation( context, scaledWidth, scaledHeight, hasDataDefinedRotation, offset, angle );
QPainter *p = context.renderContext().painter();
if ( !p )
{
return;
}
QMatrix transform;
transform.translate( point.x() + offset.x(), point.y() + offset.y() );
if ( !qgsDoubleNear( angle, 0.0 ) )
{
transform.rotate( angle );
}
p->setPen( mPen );
p->setBrush( mBrush );
p->drawPath( transform.map( mPainterPath ) );
}