39void QgsSymbolLayer::initPropertyDefinitions()
41 if ( !sPropertyDefinitions.isEmpty() )
44 QString origin = QStringLiteral(
"symbol" );
131 lSubSymbol->startFeatureRender( feature, context );
137 lSubSymbol->stopFeatureRender( feature, context );
156 Q_UNUSED( mmMapUnitScaleFactor )
157 Q_UNUSED( layerName )
199 return QVector<qreal>();
204 return Qt::SolidLine;
234 , mId( QUuid::createUuid().toString() )
240 return Qgis::SymbolLayerFlags();
300 QgsSymbolLayer::initPropertyDefinitions();
301 return sPropertyDefinitions;
346 if ( !baseName.isEmpty() )
348 prefix.append( QStringLiteral(
"%1_dd_" ).arg( baseName ) );
351 if ( !map.contains( QStringLiteral(
"%1expression" ).arg( prefix ) ) )
357 bool active = ( map.value( QStringLiteral(
"%1active" ).arg( prefix ), QStringLiteral(
"1" ) ) != QLatin1String(
"0" ) );
358 QString expression = map.value( QStringLiteral(
"%1expression" ).arg( prefix ) ).toString();
359 bool useExpression = ( map.value( QStringLiteral(
"%1useexpr" ).arg( prefix ), QStringLiteral(
"1" ) ) != QLatin1String(
"0" ) );
360 QString field = map.value( QStringLiteral(
"%1field" ).arg( prefix ), QString() ).toString();
371 static const QMap< QString, QgsSymbolLayer::Property > OLD_PROPS
446 QVariantMap::const_iterator propIt = stringMap.constBegin();
447 for ( ; propIt != stringMap.constEnd(); ++propIt )
449 std::unique_ptr<QgsProperty> prop;
450 QString propertyName;
452 if ( propIt.key().endsWith( QLatin1String(
"_dd_expression" ) ) )
457 propertyName = propIt.key().left( propIt.key().length() - 14 );
459 prop = std::make_unique<QgsProperty>(
propertyFromMap( stringMap, propertyName ) );
461 else if ( propIt.key().endsWith( QLatin1String(
"_expression" ) ) )
466 propertyName = propIt.key().left( propIt.key().length() - 11 );
471 if ( !prop || !OLD_PROPS.contains( propertyName ) )
479 if ( propertyName == QLatin1String(
"width" ) )
481 else if ( propertyName == QLatin1String(
"color" ) )
552 std::unique_ptr< QgsEffectPainter > effectPainter;
553 if ( effect && effect->
enabled() )
554 effectPainter = std::make_unique< QgsEffectPainter >( context.
renderContext(), effect );
556 for ( QPointF point : std::as_const( points ) )
559 effectPainter.reset();
640 offsetX += anchorPointCorrectionX;
644 offsetX -= anchorPointCorrectionX;
650 offsetY += anchorPointCorrectionY;
654 offsetY -= anchorPointCorrectionY;
661 double c = std::cos(
angle ), s = std::sin(
angle );
667 if (
str.compare( QLatin1String(
"left" ), Qt::CaseInsensitive ) == 0 )
671 else if (
str.compare( QLatin1String(
"right" ), Qt::CaseInsensitive ) == 0 )
683 if (
str.compare( QLatin1String(
"top" ), Qt::CaseInsensitive ) == 0 )
687 else if (
str.compare( QLatin1String(
"bottom" ), Qt::CaseInsensitive ) == 0 )
756 std::unique_ptr< QgsEffectPainter > effectPainter;
757 if ( effect && effect->
enabled() )
758 effectPainter = std::make_unique< QgsEffectPainter >( context.
renderContext(), effect );
760 for (
const QList< QPolygonF > &line : points )
763 effectPainter.reset();
771 std::unique_ptr< QgsExpressionContextScopePopper > scopePopper;
800 for (
const QPolygonF &ring : std::as_const( *rings ) )
836 std::unique_ptr< QgsEffectPainter > effectPainter;
837 if ( effect && effect->
enabled() )
838 effectPainter = std::make_unique< QgsEffectPainter >( context.
renderContext(), effect );
840 for (
const QList< QPolygonF > &poly : polys )
842 QVector< QPolygonF > rings;
843 for (
int i = 1; i < poly.size(); ++i )
844 rings << poly.at( i );
848 effectPainter.reset();
866 if ( points.size() <= 5 &&
869 ( p->renderHints() & QPainter::Antialiasing ) )
871 p->setRenderHint( QPainter::Antialiasing,
false );
872 p->drawRect( points.boundingRect() );
873 p->setRenderHint( QPainter::Antialiasing,
true );
879 if ( !rings && p->pen().style() == Qt::NoPen )
882 p->drawPolygon( points );
888 path.addPolygon( points );
892 for (
auto it = rings->constBegin(); it != rings->constEnd(); ++it )
894 QPolygonF ring = *it;
895 path.addPolygon( ring );
905 QDomElement symbolizerElem = doc.createElement( QStringLiteral(
"se:PointSymbolizer" ) );
906 if ( !props.value( QStringLiteral(
"uom" ), QString() ).toString().isEmpty() )
907 symbolizerElem.setAttribute( QStringLiteral(
"uom" ), props.value( QStringLiteral(
"uom" ), QString() ).toString() );
908 element.appendChild( symbolizerElem );
961 if ( !clipPaths.isEmpty() )
963 QPainterPath mergedPaths;
964 mergedPaths.setFillRule( Qt::WindingFill );
965 for (
const QPainterPath &path : clipPaths )
967 mergedPaths.addPath( path );
970 if ( !mergedPaths.isEmpty() )
989 const QList<QgsSymbolLayer *> layers = lSubSymbol->symbolLayers();
991 sl->installMasks( context,
true );
1004 const QList<QgsSymbolLayer *> layers = lSubSymbol->symbolLayers();
1006 sl->removeMasks( context,
true );
The Qgis class provides global constants for use throughout the application.
@ ScaleDiameter
Calculate scale by the diameter.
@ ScaleArea
Calculate scale by the area.
RenderUnit
Rendering size units.
@ Millimeters
Millimeters.
@ Unknown
Mixed or unknown units.
@ MetersInMapUnits
Meters value as Map units.
@ RenderSymbolPreview
The render is for a symbol preview only and map based properties may not be available,...
@ DisableSelectionRecoloring
If present, indicates that the symbol layer should not be recolored when rendering selected features.
SymbolType
Attribute editing capabilities which may be supported by vector data providers.
static bool isGeneralizableByDeviceBoundingBox(const QgsRectangle &envelope, float mapToPixelTol=1.0f)
Returns whether the device-envelope can be replaced by its BBOX when is applied the specified toleran...
double valueAsDouble(int key, const QgsExpressionContext &context, double defaultValue=0.0, bool *ok=nullptr) const
Calculates the current value of the property with the specified key and interprets it as a double.
Exports QGIS layers to the DXF format.
static double mapUnitScaleFactor(double scale, Qgis::RenderUnit symbolUnits, Qgis::DistanceUnit mapUnits, double mapUnitsPerPixel=1.0)
Returns scale factor for conversion to map units.
Qgis::DistanceUnit mapUnits() const
Retrieve map units.
double symbologyScale() const
Returns the reference scale for output.
Single scope for storing variables and functions for use within a QgsExpressionContext.
void addVariable(const QgsExpressionContextScope::StaticVariable &variable)
Adds a variable into the context scope.
static const QString EXPR_GEOMETRY_RING_NUM
Inbuilt variable name for geometry ring number variable.
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
bool isEmpty() const
Checks whether the container is empty.
virtual void renderPolygon(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context)=0
Renders the fill symbol layer for the polygon whose outer ring is defined by points,...
void _renderPolygon(QPainter *p, const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context)
Default method to render polygon.
virtual QImage toTiledPatternImage() const
Renders the symbol layer as an image that can be used as a seamless pattern fill for polygons,...
void drawPreviewIcon(QgsSymbolRenderContext &context, QSize size) override
QgsFillSymbolLayer(const QgsFillSymbolLayer &other)=delete
QgsFillSymbolLayer cannot be copied.
QList< QList< QPolygonF > > toQPolygonF(Qgis::SymbolType type, QSizeF size) const
Converts the patch shape to a set of QPolygonF objects representing how the patch should be drawn for...
Qgis::RenderUnit mOffsetUnit
RenderRingFilter
Options for filtering rings when the line symbol layer is being used to render a polygon's rings.
@ ExteriorRingOnly
Render the exterior ring only.
@ InteriorRingsOnly
Render the interior rings only.
@ AllRings
Render both exterior and interior rings.
QgsMapUnitScale mWidthMapUnitScale
RenderRingFilter ringFilter() const
Returns the line symbol layer's ring filter, which controls which rings are rendered when the line sy...
void drawPreviewIcon(QgsSymbolRenderContext &context, QSize size) override
QgsLineSymbolLayer(const QgsLineSymbolLayer &other)=delete
QgsLineSymbolLayer cannot be copied.
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
Qgis::RenderUnit outputUnit() const override
Returns the units to use for sizes and widths within the symbol layer.
virtual void renderPolygonStroke(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context)
Renders the line symbol layer along the outline of polygon, using the given render context.
Qgis::RenderUnit mWidthUnit
virtual void renderPolyline(const QPolygonF &points, QgsSymbolRenderContext &context)=0
Renders the line symbol layer along the line joining points, using the given render context.
RenderRingFilter mRingFilter
virtual double width() const
Returns the estimated width for the line symbol layer.
double dxfWidth(const QgsDxfExport &e, QgsSymbolRenderContext &context) const override
Gets line width.
QgsMapUnitScale mapUnitScale() const override
void setRingFilter(QgsLineSymbolLayer::RenderRingFilter filter)
Sets the line symbol layer's ring filter, which controls which rings are rendered when the line symbo...
void setMapUnitScale(const QgsMapUnitScale &scale) override
Qgis::RenderUnit widthUnit() const
Returns the units for the line's width.
double mapUnitsPerPixel() const
Returns the current map units per pixel.
Struct for storing maximum and minimum scales for measurements in map units.
void drawPreviewIcon(QgsSymbolRenderContext &context, QSize size) override
Qgis::RenderUnit mOffsetUnit
Offset units.
QPointF offset() const
Returns the marker's offset, which is the horizontal and vertical displacement which the rendered mar...
HorizontalAnchorPoint
Symbol horizontal anchor points.
@ Right
Align to right side of symbol.
@ HCenter
Align to horizontal center of symbol.
@ Left
Align to left side of symbol.
Qgis::RenderUnit outputUnit() const override
Returns the units to use for sizes and widths within the symbol layer.
virtual void renderPoint(QPointF point, QgsSymbolRenderContext &context)=0
Renders a marker at the specified point.
QPointF mOffset
Marker offset.
QgsMapUnitScale mapUnitScale() const override
double size() const
Returns the symbol size.
QgsMapUnitScale mOffsetMapUnitScale
Offset map unit scale.
HorizontalAnchorPoint mHorizontalAnchorPoint
Horizontal anchor point.
QgsMarkerSymbolLayer(const QgsMarkerSymbolLayer &other)=delete
QgsMarkerSymbolLayer cannot be copied.
static QPointF _rotatedOffset(QPointF offset, double angle)
Adjusts a marker offset to account for rotation.
virtual double dxfAngle(QgsSymbolRenderContext &context) const override
Gets angle.
Qgis::ScaleMethod mScaleMethod
Marker size scaling method.
virtual double dxfSize(const QgsDxfExport &e, QgsSymbolRenderContext &context) const override
Gets marker size.
void stopRender(QgsSymbolRenderContext &context) override
Called after a set of rendering operations has finished on the supplied render context.
VerticalAnchorPoint verticalAnchorPoint() const
Returns the vertical anchor point for positioning the symbol.
QgsMapUnitScale mSizeMapUnitScale
Marker size map unit scale.
Qgis::RenderUnit mSizeUnit
Marker size unit.
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
HorizontalAnchorPoint horizontalAnchorPoint() const
Returns the horizontal anchor point for positioning the symbol.
VerticalAnchorPoint
Symbol vertical anchor points.
@ VCenter
Align to vertical center of symbol.
@ Bottom
Align to bottom of symbol.
@ Top
Align to top of symbol.
void markerOffset(QgsSymbolRenderContext &context, double &offsetX, double &offsetY) const
Calculates the required marker offset, including both the symbol offset and any displacement required...
VerticalAnchorPoint mVerticalAnchorPoint
Vertical anchor point.
void toSld(QDomDocument &doc, QDomElement &element, const QVariantMap &props) const override
Saves the symbol layer as SLD.
virtual void writeSldMarker(QDomDocument &doc, QDomElement &element, const QVariantMap &props) const
Writes the symbol layer definition as a SLD XML element.
double mAngle
Marker rotation angle, in degrees clockwise from north.
void startRender(QgsSymbolRenderContext &context) override
Called before a set of rendering operations commences on the supplied render context.
double angle() const
Returns the rotation angle for the marker, in degrees clockwise from north.
void setMapUnitScale(const QgsMapUnitScale &scale) override
static bool isDefaultStack(QgsPaintEffect *effect)
Tests whether a paint effect matches the default effects stack.
Base class for visual effects which can be applied to QPicture drawings.
bool enabled() const
Returns whether the effect is enabled.
QVariant value(int key, const QgsExpressionContext &context, const QVariant &defaultValue=QVariant()) const override
Returns the calculated value of the property with the specified key from within the collection.
void setProperty(int key, const QgsProperty &property)
Adds a property to the collection and takes ownership of it.
QSet< QString > referencedFields(const QgsExpressionContext &context=QgsExpressionContext(), bool ignoreContext=false) const override
Returns the set of any fields referenced by the active properties from the collection.
bool isActive(int key) const override
Returns true if the collection contains an active property with the specified key.
bool hasActiveProperties() const override
Returns true if the collection has any active properties, or false if all properties within the colle...
bool prepare(const QgsExpressionContext &context=QgsExpressionContext()) const override
Prepares the collection against a specified expression context.
Definition for a property.
@ HorizontalAnchor
Horizontal anchor point.
@ Double
Double value (including negative values)
@ VerticalAnchor
Vertical anchor point.
@ Double0To1
Double value between 0-1 (inclusive)
@ FillStyle
Fill style (eg solid, lines)
@ StrokeWidth
Line stroke width.
@ LineStyle
Line style (eg solid/dashed)
@ String
Any string value.
@ PenJoinStyle
Pen join style.
@ IntegerPositive
Positive integer values (including 0)
@ CapStyle
Line cap style (eg round)
@ Rotation
Rotation (value between 0-360 degrees)
@ Size
1D size (eg marker radius, or square marker height/width)
@ ColorWithAlpha
Color with alpha channel.
@ DoublePositive
Positive double value (including 0)
@ DataTypeString
Property requires a string value.
@ DataTypeNumeric
Property requires a numeric value.
A store for object properties.
static QgsProperty fromExpression(const QString &expression, bool isActive=true)
Returns a new ExpressionBasedProperty created from the specified expression.
static QgsProperty fromField(const QString &fieldName, bool isActive=true)
Returns a new FieldBasedProperty created from the specified field name.
Contains information about the context of a rendering operation.
double convertToPainterUnits(double size, Qgis::RenderUnit unit, const QgsMapUnitScale &scale=QgsMapUnitScale(), Qgis::RenderSubcomponentProperty property=Qgis::RenderSubcomponentProperty::Generic) const
Converts a size from the specified units to painter units (pixels).
QPainter * painter()
Returns the destination QPainter for the render operation.
QgsExpressionContext & expressionContext()
Gets the expression context.
QSize outputSize() const
Returns the size of the resulting rendered image, in pixels.
const QgsVectorSimplifyMethod & vectorSimplifyMethod() const
Returns the simplification settings to use when rendering vector layers.
const QgsMapToPixel & mapToPixel() const
Returns the context's map to pixel transform, which transforms between map coordinates and device coo...
Qgis::RenderContextFlags flags() const
Returns combination of flags used for rendering.
QList< QPainterPath > symbolLayerClipPaths(const QString &symbolLayerId) const
Returns clip paths to be applied to the symbolLayer before rendering.
static QgsStyle * defaultStyle()
Returns default application-wide style.
QList< QList< QPolygonF > > defaultPatchAsQPolygonF(Qgis::SymbolType type, QSizeF size) const
Returns the default patch geometry for the given symbol type and size as a set of QPolygonF objects (...
static QPointF toPoint(const QVariant &value, bool *ok=nullptr)
Converts a value to a point.
static void createGeometryElement(QDomDocument &doc, QDomElement &element, const QString &geomFunc)
static QString encodePoint(QPointF point)
Encodes a QPointF to a string.
Property
Data definable properties.
@ PropertyGradientReference1X
Gradient reference point 1 x.
@ PropertyShapeburstIgnoreRings
Shapeburst ignore rings.
@ PropertyGradientReference2X
Gradient reference point 2 x.
@ PropertyStrokeStyle
Stroke style (eg solid, dashed)
@ PropertyPlacement
Line marker placement.
@ PropertyHorizontalAnchor
Horizontal anchor point.
@ PropertyPreserveAspectRatio
Preserve aspect ratio between width and height.
@ PropertyDistanceX
Horizontal distance between points.
@ PropertyFile
Filename, eg for svg files.
@ PropertyGradientType
Gradient fill type.
@ PropertyCapStyle
Line cap style.
@ PropertyLineEndWidthValue
End line width for interpolated line renderer (since QGIS 3.22)
@ PropertyLineEndColorValue
End line color for interpolated line renderer (since QGIS 3.22)
@ PropertyAngle
Symbol angle.
@ PropertyLineClipping
Line clipping mode (since QGIS 3.24)
@ PropertyDistanceY
Vertical distance between points.
@ PropertyDisplacementX
Horizontal displacement.
@ PropertyVerticalAnchor
Vertical anchor point.
@ PropertyGradientSpread
Gradient spread mode.
@ PropertyOffsetY
Vertical offset.
@ PropertyGradientReference1Y
Gradient reference point 1 y.
@ PropertyLineDistance
Distance between lines, or length of lines for hash line symbols.
@ PropertyOffsetAlongLine
Offset along line.
@ PropertyLineStartColorValue
Start line color for interpolated line renderer (since QGIS 3.22)
@ PropertyArrowStartWidth
Arrow tail start width.
@ PropertyBlurRadius
Shapeburst blur radius.
@ PropertyGradientReference2Y
Gradient reference point 2 y.
@ PropertyMarkerClipping
Marker clipping mode (since QGIS 3.24)
@ PropertyArrowHeadLength
Arrow head length.
@ PropertyGradientReference1IsCentroid
Gradient reference point 1 is centroid.
@ PropertyCustomDash
Custom dash pattern.
@ PropertyShapeburstUseWholeShape
Shapeburst use whole shape.
@ PropertySize
Symbol size.
@ PropertyArrowHeadThickness
Arrow head thickness.
@ PropertyOffsetX
Horizontal offset.
@ PropertyJoinStyle
Line join style.
@ PropertyLineStartWidthValue
Start line width for interpolated line renderer (since QGIS 3.22)
@ PropertyTrimEnd
Trim distance from end of line (since QGIS 3.20)
@ PropertyOpacity
Opacity.
@ PropertySecondaryColor
Secondary color (eg for gradient fills)
@ PropertyCharacter
Character, eg for font marker symbol layers.
@ PropertyCoordinateMode
Gradient coordinate mode.
@ PropertyRandomOffsetY
Random offset Y (since QGIS 3.24)
@ PropertyLineAngle
Line angle, or angle of hash lines for hash line symbols.
@ PropertyShapeburstMaxDistance
Shapeburst fill from edge distance.
@ PropertyTrimStart
Trim distance from start of line (since QGIS 3.20)
@ PropertyOffset
Symbol offset.
@ PropertyStrokeWidth
Stroke width.
@ PropertyDashPatternOffset
Dash pattern offset,.
@ PropertyFillColor
Fill color.
@ PropertyArrowHeadType
Arrow head type.
@ PropertyFontStyle
Font style.
@ PropertyHeight
Symbol height.
@ PropertyClipPoints
Whether markers should be clipped to polygon boundaries.
@ PropertyFontFamily
Font family.
@ PropertyPointCount
Point count.
@ PropertyRandomSeed
Random number seed.
@ PropertyLayerEnabled
Whether symbol layer is enabled.
@ PropertyName
Name, eg shape name for simple markers.
@ PropertyAverageAngleLength
Length to average symbol angles over.
@ PropertyInterval
Line marker interval.
@ PropertyRandomOffsetX
Random offset X (since QGIS 3.24)
@ PropertyFillStyle
Fill style (eg solid, dots)
@ PropertyArrowType
Arrow type.
@ PropertyDisplacementY
Vertical displacement.
@ PropertyStrokeColor
Stroke color.
@ PropertyGradientReference2IsCentroid
Gradient reference point 2 is centroid.
@ PropertyArrowWidth
Arrow tail width.
@ PropertyWidth
Symbol width.
virtual bool setSubSymbol(QgsSymbol *symbol)
Sets layer's subsymbol. takes ownership of the passed symbol.
bool shouldRenderUsingSelectionColor(const QgsSymbolRenderContext &context) const
Returns true if the symbol layer should be rendered using the selection color from the render context...
Qgis::SymbolType type() const
virtual void startFeatureRender(const QgsFeature &feature, QgsRenderContext &context)
Called before the layer will be rendered for a particular feature.
virtual QColor fillColor() const
Returns the fill color for the symbol layer.
void setId(const QString &id)
Set symbol layer identifier This id has to be unique in the whole project.
virtual void setStrokeColor(const QColor &color)
Sets the stroke color for the symbol layer.
virtual double dxfSize(const QgsDxfExport &e, QgsSymbolRenderContext &context) const
Gets marker size.
virtual double dxfOffset(const QgsDxfExport &e, QgsSymbolRenderContext &context) const
Gets offset.
virtual QColor dxfBrushColor(QgsSymbolRenderContext &context) const
Gets brush/fill color.
void removeMasks(QgsRenderContext &context, bool recursive)
When rendering, remove previously installed masks from context painter if recursive is true masks are...
virtual QSet< QString > usedAttributes(const QgsRenderContext &context) const
Returns the set of attributes referenced by the layer.
void copyDataDefinedProperties(QgsSymbolLayer *destLayer) const
Copies all data defined properties of this layer to another symbol layer.
void installMasks(QgsRenderContext &context, bool recursive)
When rendering, install masks on context painter if recursive is true masks are installed recursively...
void restoreOldDataDefinedProperties(const QVariantMap &stringMap)
Restores older data defined properties from string map.
void setPaintEffect(QgsPaintEffect *effect)
Sets the current paint effect for the layer.
void setRenderingPass(int renderingPass)
Specifies the rendering pass in which this symbol layer should be rendered.
QgsPaintEffect * paintEffect() const
Returns the current paint effect for the layer.
virtual void startRender(QgsSymbolRenderContext &context)=0
Called before a set of rendering operations commences on the supplied render context.
QgsSymbolLayer(const QgsSymbolLayer &other)=delete
QgsSymbolLayer cannot be copied.
std::unique_ptr< QgsPaintEffect > mPaintEffect
virtual Qt::PenStyle dxfPenStyle() const
Gets pen style.
virtual void setFillColor(const QColor &color)
Sets the fill color for the symbol layer.
virtual void prepareExpressions(const QgsSymbolRenderContext &context)
Prepares all data defined property expressions for evaluation.
void setUserFlags(Qgis::SymbolLayerUserFlags flags)
Sets user-controlled flags which control the symbol layer's behavior.
virtual QColor dxfColor(QgsSymbolRenderContext &context) const
Gets color.
int renderingPass() const
Specifies the rendering pass in which this symbol layer should be rendered.
virtual void stopRender(QgsSymbolRenderContext &context)=0
Called after a set of rendering operations has finished on the supplied render context.
virtual bool isCompatibleWithSymbol(QgsSymbol *symbol) const
Returns if the layer can be used below the specified symbol.
QString id() const
Returns symbol layer identifier This id is unique in the whole project.
virtual void setDataDefinedProperty(Property key, const QgsProperty &property)
Sets a data defined property for the layer.
virtual void setColor(const QColor &color)
Sets the "representative" color for the symbol layer.
virtual QgsSymbol * subSymbol()
Returns the symbol's sub symbol, if present.
Qgis::SymbolLayerUserFlags userFlags() const
Returns user-controlled flags which control the symbol layer's behavior.
virtual QColor color() const
Returns the "representative" color of the symbol layer.
virtual void prepareMasks(const QgsSymbolRenderContext &context)
Prepares all mask internal objects according to what is defined in context This should be called prio...
virtual void stopFeatureRender(const QgsFeature &feature, QgsRenderContext &context)
Called after the layer has been rendered for a particular feature.
static const QgsPropertiesDefinition & propertyDefinitions()
Returns the symbol layer property definitions.
virtual double dxfWidth(const QgsDxfExport &e, QgsSymbolRenderContext &context) const
Gets line width.
virtual QColor strokeColor() const
Returns the stroke color for the symbol layer.
virtual double dxfAngle(QgsSymbolRenderContext &context) const
Gets angle.
Qgis::SymbolLayerUserFlags mUserFlags
User controlled flags.
virtual bool canCauseArtifactsBetweenAdjacentTiles() const
Returns true if the symbol layer rendering can cause visible artifacts across a single feature when t...
virtual ~QgsSymbolLayer()
virtual bool usesMapUnits() const
Returns true if the symbol layer has any components which use map unit based sizes.
virtual bool writeDxf(QgsDxfExport &e, double mmMapUnitScaleFactor, const QString &layerName, QgsSymbolRenderContext &context, QPointF shift=QPointF(0.0, 0.0)) const
write as DXF
void copyPaintEffect(QgsSymbolLayer *destLayer) const
Copies paint effect of this layer to another symbol layer.
virtual Qgis::SymbolLayerFlags flags() const
Returns flags which control the symbol layer's behavior.
QgsPropertyCollection mDataDefinedProperties
virtual QList< QgsSymbolLayerReference > masks() const
Returns masks defined by this symbol layer.
QgsPropertyCollection & dataDefinedProperties()
Returns a reference to the symbol layer's property collection, used for data defined overrides.
virtual Qt::BrushStyle dxfBrushStyle() const
Gets brush/fill style.
virtual QVector< qreal > dxfCustomDashPattern(Qgis::RenderUnit &unit) const
Gets dash pattern.
virtual bool hasDataDefinedProperties() const
Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties.
void setDataDefinedProperties(const QgsPropertyCollection &collection)
Sets the symbol layer's property collection, used for data defined overrides.
QgsFields fields() const
Fields of the layer.
bool selected() const
Returns true if symbols should be rendered using the selected symbol coloring and style.
void setOriginalValueVariable(const QVariant &value)
Sets the original value variable value for data defined symbology.
const QgsLegendPatchShape * patchShape() const
Returns the symbol patch shape, to use if rendering symbol preview icons.
QgsRenderContext & renderContext()
Returns a reference to the context's render context.
Abstract base class for all rendered symbols.
Qgis::SymbolType type() const
Returns the symbol's type.
static bool isNull(const QVariant &variant)
Returns true if the specified variant should be considered a NULL value.
SimplifyHints simplifyHints() const
Gets the simplification hints of the vector layer managed.
float threshold() const
Gets the simplification threshold of the vector layer managed.
@ AntialiasingSimplification
The geometries can be rendered with 'AntiAliasing' disabled because of it is '1-pixel size'.
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into c
QMap< int, QgsPropertyDefinition > QgsPropertiesDefinition
Definition of available properties.
QgsProperty propertyFromMap(const QVariantMap &map, const QString &baseName)
Single variable definition for use within a QgsExpressionContextScope.