QGIS API Documentation  3.13.0-Master (13337b20cd)
Classes | Public Types | Public Member Functions | Static Public Member Functions | List of all members
QgsRandomMarkerFillSymbolLayer Class Reference

A fill symbol layer which places markers at random locations within polygons. More...

#include <qgsfillsymbollayer.h>

Inheritance diagram for QgsRandomMarkerFillSymbolLayer:
Inheritance graph
[legend]

Public Types

enum  CountMethod { AbsoluteCount, DensityBasedCount }
 Methods to define the number of points randomly filling the polygon. More...
 
- Public Types inherited from QgsSymbolLayer
enum  Property {
  PropertySize = 0, PropertyAngle, PropertyName, PropertyFillColor,
  PropertyStrokeColor, PropertyStrokeWidth, PropertyStrokeStyle, PropertyOffset,
  PropertyCharacter, PropertyWidth, PropertyHeight, PropertyPreserveAspectRatio,
  PropertyFillStyle, PropertyJoinStyle, PropertySecondaryColor, PropertyLineAngle,
  PropertyLineDistance, PropertyGradientType, PropertyCoordinateMode, PropertyGradientSpread,
  PropertyGradientReference1X, PropertyGradientReference1Y, PropertyGradientReference2X, PropertyGradientReference2Y,
  PropertyGradientReference1IsCentroid, PropertyGradientReference2IsCentroid, PropertyBlurRadius, PropertyShapeburstUseWholeShape,
  PropertyShapeburstMaxDistance, PropertyShapeburstIgnoreRings, PropertyFile, PropertyDistanceX,
  PropertyDistanceY, PropertyDisplacementX, PropertyDisplacementY, PropertyOpacity,
  PropertyCustomDash, PropertyCapStyle, PropertyPlacement, PropertyInterval,
  PropertyOffsetAlongLine, PropertyAverageAngleLength, PropertyHorizontalAnchor, PropertyVerticalAnchor,
  PropertyLayerEnabled, PropertyArrowWidth, PropertyArrowStartWidth, PropertyArrowHeadLength,
  PropertyArrowHeadThickness, PropertyArrowHeadType, PropertyArrowType, PropertyOffsetX,
  PropertyOffsetY, PropertyPointCount, PropertyRandomSeed, PropertyClipPoints,
  PropertyDensityArea
}
 Data definable properties. More...
 

Public Member Functions

 QgsRandomMarkerFillSymbolLayer (int pointCount=10, CountMethod method=AbsoluteCount, double densityArea=250.0, unsigned long seed=0)
 Constructor for QgsRandomMarkerFillSymbolLayer, with the specified pointCount. More...
 
bool clipPoints () const
 Returns true if point markers should be clipped to the polygon boundary. More...
 
QgsRandomMarkerFillSymbolLayerclone () const override
 Shall be reimplemented by subclasses to create a deep copy of the instance. More...
 
QColor color () const override
 The fill color. More...
 
CountMethod countMethod () const
 Returns the count method used to randomly fill the polygon. More...
 
double densityArea () const
 Returns the density area used to count the number of points to randomly fill the polygon. More...
 
QgsUnitTypes::RenderUnit densityAreaUnit () const
 Returns the units for the density area. More...
 
const QgsMapUnitScaledensityAreaUnitScale () const
 Returns the map scale for the density area. More...
 
bool hasDataDefinedProperties () const override
 Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties. More...
 
QString layerType () const override
 Returns a string that represents this layer type. More...
 
QgsMapUnitScale mapUnitScale () const override
 
QgsUnitTypes::RenderUnit outputUnit () const override
 Returns the units to use for sizes and widths within the symbol layer. More...
 
int pointCount () const
 Returns the count of random points to render in the fill. More...
 
QgsStringMap properties () const override
 Should be reimplemented by subclasses to return a string map that contains the configuration information for the symbol layer. More...
 
void renderPolygon (const QPolygonF &points, QList< QPolygonF > *rings, QgsSymbolRenderContext &context) override
 
unsigned long seed () const
 Returns the random number seed to use when generating points, or 0 if a truly random sequence will be used (causing points to appear in different locations with every map refresh). More...
 
void setClipPoints (bool clipped)
 Sets whether point markers should be clipped to the polygon boundary. More...
 
void setColor (const QColor &color) override
 The fill color. More...
 
void setCountMethod (CountMethod method)
 Sets the count method used to randomly fill the polygon. More...
 
void setDensityArea (double area)
 Sets the density area used to count the number of points to randomly fill the polygon. More...
 
void setDensityAreaUnit (QgsUnitTypes::RenderUnit unit)
 Sets the units for the density area. More...
 
void setDensityAreaUnitScale (const QgsMapUnitScale &scale)
 Sets the map scale for the density area. More...
 
void setMapUnitScale (const QgsMapUnitScale &scale) override
 
void setOutputUnit (QgsUnitTypes::RenderUnit unit) override
 Sets the units to use for sizes and widths within the symbol layer. More...
 
void setPointCount (int count)
 Sets the count of random points to render in the fill. More...
 
void setSeed (unsigned long seed)
 Sets the random number seed to use when generating points, or 0 if a truly random sequence will be used on every rendering (causing points to appear in different locations with every map refresh). More...
 
bool setSubSymbol (QgsSymbol *symbol) override
 Sets layer's subsymbol. takes ownership of the passed symbol. More...
 
void startFeatureRender (const QgsFeature &feature, QgsRenderContext &context) override
 Called before the layer will be rendered for a particular feature. More...
 
void startRender (QgsSymbolRenderContext &context) override
 Called before a set of rendering operations commences on the supplied render context. More...
 
void stopFeatureRender (const QgsFeature &feature, QgsRenderContext &context) override
 Called after the layer has been rendered for a particular feature. More...
 
void stopRender (QgsSymbolRenderContext &context) override
 Called after a set of rendering operations has finished on the supplied render context. More...
 
QgsSymbolsubSymbol () override
 Returns the symbol's sub symbol, if present. More...
 
QSet< QString > usedAttributes (const QgsRenderContext &context) const override
 Returns the set of attributes referenced by the layer. More...
 
- Public Member Functions inherited from QgsFillSymbolLayer
 QgsFillSymbolLayer (const QgsFillSymbolLayer &other)=delete
 QgsFillSymbolLayer cannot be copied. More...
 
double angle () const
 
void drawPreviewIcon (QgsSymbolRenderContext &context, QSize size) override
 
QgsFillSymbolLayeroperator= (const QgsFillSymbolLayer &other)=delete
 QgsFillSymbolLayer cannot be copied. More...
 
void setAngle (double angle)
 
- Public Member Functions inherited from QgsSymbolLayer
 QgsSymbolLayer (const QgsSymbolLayer &other)=delete
 QgsSymbolLayer cannot be copied. More...
 
virtual ~QgsSymbolLayer ()
 
QgsPropertyCollectiondataDefinedProperties ()
 Returns a reference to the symbol layer's property collection, used for data defined overrides. More...
 
const QgsPropertyCollectiondataDefinedProperties () const
 Returns a reference to the symbol layer's property collection, used for data defined overrides. More...
 
virtual double dxfAngle (QgsSymbolRenderContext &context) const
 Gets angle. More...
 
virtual QColor dxfBrushColor (QgsSymbolRenderContext &context) const
 Gets brush/fill color. More...
 
virtual Qt::BrushStyle dxfBrushStyle () const
 Gets brush/fill style. More...
 
virtual QColor dxfColor (QgsSymbolRenderContext &context) const
 Gets color. More...
 
virtual QVector< qreal > dxfCustomDashPattern (QgsUnitTypes::RenderUnit &unit) const
 Gets dash pattern. More...
 
virtual double dxfOffset (const QgsDxfExport &e, QgsSymbolRenderContext &context) const
 Gets offset. More...
 
virtual Qt::PenStyle dxfPenStyle () const
 Gets pen style. More...
 
virtual double dxfWidth (const QgsDxfExport &e, QgsSymbolRenderContext &context) const
 Gets line width. More...
 
bool enabled () const
 Returns true if symbol layer is enabled and will be drawn. More...
 
virtual double estimateMaxBleed (const QgsRenderContext &context) const
 Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when drawn in the specified /a context. More...
 
virtual QColor fillColor () const
 Gets fill color. More...
 
virtual bool isCompatibleWithSymbol (QgsSymbol *symbol) const
 Returns if the layer can be used below the specified symbol. More...
 
bool isLocked () const
 
virtual QgsSymbolLayerReferenceList masks () const
 Returns masks defined by this symbol layer. More...
 
virtual QString ogrFeatureStyle (double mmScaleFactor, double mapUnitScaleFactor) const
 
QgsSymbolLayeroperator= (const QgsSymbolLayer &other)=delete
 QgsSymbolLayer cannot be copied. More...
 
QgsPaintEffectpaintEffect () const
 Returns the current paint effect for the layer. More...
 
virtual void prepareExpressions (const QgsSymbolRenderContext &context)
 Prepares all data defined property expressions for evaluation. More...
 
int renderingPass () const
 Specifies the rendering pass in which this symbol layer should be rendered. More...
 
void setDataDefinedProperties (const QgsPropertyCollection &collection)
 Sets the symbol layer's property collection, used for data defined overrides. More...
 
virtual void setDataDefinedProperty (Property key, const QgsProperty &property)
 Sets a data defined property for the layer. More...
 
void setEnabled (bool enabled)
 Sets whether symbol layer is enabled and should be drawn. More...
 
virtual void setFillColor (const QColor &color)
 Set fill color. More...
 
void setLocked (bool locked)
 
void setPaintEffect (QgsPaintEffect *effect)
 Sets the current paint effect for the layer. More...
 
void setRenderingPass (int renderingPass)
 Specifies the rendering pass in which this symbol layer should be rendered. More...
 
virtual void setStrokeColor (const QColor &color)
 Set stroke color. More...
 
virtual QColor strokeColor () const
 Gets stroke color. More...
 
virtual void toSld (QDomDocument &doc, QDomElement &element, const QgsStringMap &props) const
 
QgsSymbol::SymbolType type () const
 
virtual bool writeDxf (QgsDxfExport &e, double mmMapUnitScaleFactor, const QString &layerName, QgsSymbolRenderContext &context, QPointF shift=QPointF(0.0, 0.0)) const
 write as DXF More...
 

Static Public Member Functions

static QgsSymbolLayercreate (const QgsStringMap &properties=QgsStringMap())
 Creates a new QgsRandomMarkerFillSymbolLayer using the specified properties map containing symbol properties (see properties()). More...
 
- Static Public Member Functions inherited from QgsSymbolLayer
static const QgsPropertiesDefinitionpropertyDefinitions ()
 Returns the symbol layer property definitions. More...
 

Additional Inherited Members

- Protected Member Functions inherited from QgsFillSymbolLayer
 QgsFillSymbolLayer (bool locked=false)
 
void _renderPolygon (QPainter *p, const QPolygonF &points, const QList< QPolygonF > *rings, QgsSymbolRenderContext &context)
 Default method to render polygon. More...
 
- Protected Member Functions inherited from QgsSymbolLayer
 QgsSymbolLayer (QgsSymbol::SymbolType type, bool locked=false)
 
void copyDataDefinedProperties (QgsSymbolLayer *destLayer) const
 Copies all data defined properties of this layer to another symbol layer. More...
 
void copyPaintEffect (QgsSymbolLayer *destLayer) const
 Copies paint effect of this layer to another symbol layer. More...
 
void restoreOldDataDefinedProperties (const QgsStringMap &stringMap)
 Restores older data defined properties from string map. More...
 
- Protected Attributes inherited from QgsFillSymbolLayer
double mAngle = 0.0
 
- Protected Attributes inherited from QgsSymbolLayer
QColor mColor
 
QgsPropertyCollection mDataDefinedProperties
 
bool mEnabled = true
 True if layer is enabled and should be drawn. More...
 
QgsFields mFields
 
bool mLocked = false
 
std::unique_ptr< QgsPaintEffectmPaintEffect
 
int mRenderingPass = 0
 
QgsSymbol::SymbolType mType
 
- Static Protected Attributes inherited from QgsSymbolLayer
static const bool SELECT_FILL_BORDER = false
 Whether fill styles for selected features also highlight symbol stroke. More...
 
static const bool SELECT_FILL_STYLE = false
 Whether fill styles for selected features uses symbol layer style. More...
 
static const bool SELECTION_IS_OPAQUE = true
 Whether styles for selected features ignore symbol alpha. More...
 

Detailed Description

A fill symbol layer which places markers at random locations within polygons.

Since
QGIS 3.12

Definition at line 1733 of file qgsfillsymbollayer.h.

Member Enumeration Documentation

◆ CountMethod

Methods to define the number of points randomly filling the polygon.

Enumerator
AbsoluteCount 

The point count is used as an absolute count of markers.

DensityBasedCount 

The point count is part of a marker density count.

Definition at line 1738 of file qgsfillsymbollayer.h.

Constructor & Destructor Documentation

◆ QgsRandomMarkerFillSymbolLayer()

QgsRandomMarkerFillSymbolLayer::QgsRandomMarkerFillSymbolLayer ( int  pointCount = 10,
CountMethod  method = AbsoluteCount,
double  densityArea = 250.0,
unsigned long  seed = 0 
)

Constructor for QgsRandomMarkerFillSymbolLayer, with the specified pointCount.

Optionally a specific random number seed can be used when generating points. A seed of 0 indicates that a truly random sequence will be used on every rendering, causing points to appear in different locations with every map refresh.

Definition at line 3925 of file qgsfillsymbollayer.cpp.

Member Function Documentation

◆ clipPoints()

bool QgsRandomMarkerFillSymbolLayer::clipPoints ( ) const

Returns true if point markers should be clipped to the polygon boundary.

See also
setClipPoints()

Definition at line 4201 of file qgsfillsymbollayer.cpp.

◆ clone()

QgsRandomMarkerFillSymbolLayer * QgsRandomMarkerFillSymbolLayer::clone ( ) const
overridevirtual

Shall be reimplemented by subclasses to create a deep copy of the instance.

Implements QgsSymbolLayer.

Definition at line 4130 of file qgsfillsymbollayer.cpp.

◆ color()

QColor QgsRandomMarkerFillSymbolLayer::color ( ) const
overridevirtual

The fill color.

Reimplemented from QgsSymbolLayer.

Definition at line 3979 of file qgsfillsymbollayer.cpp.

◆ countMethod()

QgsRandomMarkerFillSymbolLayer::CountMethod QgsRandomMarkerFillSymbolLayer::countMethod ( ) const

Returns the count method used to randomly fill the polygon.

See also
setCountMethod()

Definition at line 4211 of file qgsfillsymbollayer.cpp.

◆ create()

QgsSymbolLayer * QgsRandomMarkerFillSymbolLayer::create ( const QgsStringMap properties = QgsStringMap())
static

Creates a new QgsRandomMarkerFillSymbolLayer using the specified properties map containing symbol properties (see properties()).

Caller takes ownership of the returned symbol layer.

Definition at line 3934 of file qgsfillsymbollayer.cpp.

◆ densityArea()

double QgsRandomMarkerFillSymbolLayer::densityArea ( ) const

Returns the density area used to count the number of points to randomly fill the polygon.

Only used when the count method is set to QgsRandomMarkerFillSymbolLayer::DensityBasedCount.

Units are specified by setDensityAreaUnit().

See also
setDensityArea()

Definition at line 4221 of file qgsfillsymbollayer.cpp.

◆ densityAreaUnit()

QgsUnitTypes::RenderUnit QgsRandomMarkerFillSymbolLayer::densityAreaUnit ( ) const
inline

Returns the units for the density area.

See also
setDensityAreaUnit()

Definition at line 1868 of file qgsfillsymbollayer.h.

◆ densityAreaUnitScale()

const QgsMapUnitScale& QgsRandomMarkerFillSymbolLayer::densityAreaUnitScale ( ) const
inline

Returns the map scale for the density area.

See also
setDensityAreaUnitScale()
densityArea()
densityAreaUnit()

Definition at line 1885 of file qgsfillsymbollayer.h.

◆ hasDataDefinedProperties()

bool QgsRandomMarkerFillSymbolLayer::hasDataDefinedProperties ( ) const
overridevirtual

Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties.

Since
QGIS 3.4.5

Reimplemented from QgsSymbolLayer.

Definition at line 4172 of file qgsfillsymbollayer.cpp.

◆ layerType()

QString QgsRandomMarkerFillSymbolLayer::layerType ( ) const
overridevirtual

Returns a string that represents this layer type.

Used for serialization. Should match with the string used to register this symbol layer in the registry.

Implements QgsSymbolLayer.

Definition at line 3968 of file qgsfillsymbollayer.cpp.

◆ mapUnitScale()

QgsMapUnitScale QgsRandomMarkerFillSymbolLayer::mapUnitScale ( ) const
overridevirtual

Reimplemented from QgsSymbolLayer.

Definition at line 4269 of file qgsfillsymbollayer.cpp.

◆ outputUnit()

QgsUnitTypes::RenderUnit QgsRandomMarkerFillSymbolLayer::outputUnit ( ) const
overridevirtual

Returns the units to use for sizes and widths within the symbol layer.

Individual symbol layer subclasses will interpret this in different ways, e.g., a marker symbol layer may use it to specify the units for the marker size, while a line symbol layer may use it to specify the units for the line width.

Returns
output unit, or QgsUnitTypes::RenderUnknownUnit if the symbol layer contains mixed units
See also
setOutputUnit()

Reimplemented from QgsSymbolLayer.

Definition at line 4252 of file qgsfillsymbollayer.cpp.

◆ pointCount()

int QgsRandomMarkerFillSymbolLayer::pointCount ( ) const

Returns the count of random points to render in the fill.

See also
setPointCount()

Definition at line 4181 of file qgsfillsymbollayer.cpp.

◆ properties()

QgsStringMap QgsRandomMarkerFillSymbolLayer::properties ( ) const
overridevirtual

Should be reimplemented by subclasses to return a string map that contains the configuration information for the symbol layer.

This is used to serialize a symbol layer perstistently.

Implements QgsSymbolLayer.

Definition at line 4117 of file qgsfillsymbollayer.cpp.

◆ renderPolygon()

void QgsRandomMarkerFillSymbolLayer::renderPolygon ( const QPolygonF &  points,
QList< QPolygonF > *  rings,
QgsSymbolRenderContext context 
)
overridevirtual

Implements QgsFillSymbolLayer.

Definition at line 3995 of file qgsfillsymbollayer.cpp.

◆ seed()

unsigned long QgsRandomMarkerFillSymbolLayer::seed ( ) const

Returns the random number seed to use when generating points, or 0 if a truly random sequence will be used (causing points to appear in different locations with every map refresh).

See also
setSeed()

Definition at line 4191 of file qgsfillsymbollayer.cpp.

◆ setClipPoints()

void QgsRandomMarkerFillSymbolLayer::setClipPoints ( bool  clipped)

Sets whether point markers should be clipped to the polygon boundary.

See also
clipPoints()

Definition at line 4206 of file qgsfillsymbollayer.cpp.

◆ setColor()

void QgsRandomMarkerFillSymbolLayer::setColor ( const QColor &  color)
overridevirtual

The fill color.

Reimplemented from QgsSymbolLayer.

Definition at line 3973 of file qgsfillsymbollayer.cpp.

◆ setCountMethod()

void QgsRandomMarkerFillSymbolLayer::setCountMethod ( CountMethod  method)

Sets the count method used to randomly fill the polygon.

See also
countMethod()

Definition at line 4216 of file qgsfillsymbollayer.cpp.

◆ setDensityArea()

void QgsRandomMarkerFillSymbolLayer::setDensityArea ( double  area)

Sets the density area used to count the number of points to randomly fill the polygon.

See also
densityArea()

Definition at line 4226 of file qgsfillsymbollayer.cpp.

◆ setDensityAreaUnit()

void QgsRandomMarkerFillSymbolLayer::setDensityAreaUnit ( QgsUnitTypes::RenderUnit  unit)
inline

Sets the units for the density area.

Parameters
unitwidth units
See also
densityAreaUnit()

Definition at line 1862 of file qgsfillsymbollayer.h.

◆ setDensityAreaUnitScale()

void QgsRandomMarkerFillSymbolLayer::setDensityAreaUnitScale ( const QgsMapUnitScale scale)
inline

Sets the map scale for the density area.

Parameters
scaledensity area map unit scale
See also
densityAreaUnitScale()
setDensityArea()
setDensityAreaUnit()

Definition at line 1877 of file qgsfillsymbollayer.h.

◆ setMapUnitScale()

void QgsRandomMarkerFillSymbolLayer::setMapUnitScale ( const QgsMapUnitScale scale)
overridevirtual

Reimplemented from QgsSymbolLayer.

Definition at line 4261 of file qgsfillsymbollayer.cpp.

◆ setOutputUnit()

void QgsRandomMarkerFillSymbolLayer::setOutputUnit ( QgsUnitTypes::RenderUnit  unit)
overridevirtual

Sets the units to use for sizes and widths within the symbol layer.

Individual symbol layer subclasses will interpret this in different ways, e.g., a marker symbol layer may use it to specify the units for the marker size, while a line symbol layer may use it to specify the units for the line width.

Parameters
unitoutput units
See also
outputUnit()

Reimplemented from QgsSymbolLayer.

Definition at line 4244 of file qgsfillsymbollayer.cpp.

◆ setPointCount()

void QgsRandomMarkerFillSymbolLayer::setPointCount ( int  count)

Sets the count of random points to render in the fill.

See also
pointCount()

Definition at line 4186 of file qgsfillsymbollayer.cpp.

◆ setSeed()

void QgsRandomMarkerFillSymbolLayer::setSeed ( unsigned long  seed)

Sets the random number seed to use when generating points, or 0 if a truly random sequence will be used on every rendering (causing points to appear in different locations with every map refresh).

See also
seed()

Definition at line 4196 of file qgsfillsymbollayer.cpp.

◆ setSubSymbol()

bool QgsRandomMarkerFillSymbolLayer::setSubSymbol ( QgsSymbol symbol)
overridevirtual

Sets layer's subsymbol. takes ownership of the passed symbol.

Reimplemented from QgsSymbolLayer.

Definition at line 4149 of file qgsfillsymbollayer.cpp.

◆ startFeatureRender()

void QgsRandomMarkerFillSymbolLayer::startFeatureRender ( const QgsFeature feature,
QgsRenderContext context 
)
overridevirtual

Called before the layer will be rendered for a particular feature.

This is always followed by a call to stopFeatureRender() after the feature has been completely rendered (i.e. all parts have been rendered).

The default implementation does nothing.

Note
In some circumstances, startFeatureRender() and stopFeatureRender() may not be called before a symbol layer is rendered. E.g., when a symbol layer is being rendered in isolation and not as a result of rendering a feature (for instance, when rendering a legend patch or other non-feature based shape).
See also
stopFeatureRender()
startRender()
Since
QGIS 3.12

Reimplemented from QgsSymbolLayer.

Definition at line 4231 of file qgsfillsymbollayer.cpp.

◆ startRender()

void QgsRandomMarkerFillSymbolLayer::startRender ( QgsSymbolRenderContext context)
overridevirtual

Called before a set of rendering operations commences on the supplied render context.

This is always followed by a call to stopRender() after all rendering operations have been completed.

Subclasses can use this method to prepare for a set of rendering operations, e.g. by pre-evaluating paths or images to render, and performing other one-time optimisations.

See also
startFeatureRender()
stopRender()

Implements QgsSymbolLayer.

Definition at line 3984 of file qgsfillsymbollayer.cpp.

◆ stopFeatureRender()

void QgsRandomMarkerFillSymbolLayer::stopFeatureRender ( const QgsFeature feature,
QgsRenderContext context 
)
overridevirtual

Called after the layer has been rendered for a particular feature.

This is always preceded by a call to startFeatureRender() just before the feature will be rendered.

The default implementation does nothing.

Note
In some circumstances, startFeatureRender() and stopFeatureRender() may not be called before a symbol layer is rendered. E.g., when a symbol layer is being rendered in isolation and not as a result of rendering a feature (for instance, when rendering a legend patch or other non-feature based shape).
See also
startFeatureRender()
stopRender()
Since
QGIS 3.12

Reimplemented from QgsSymbolLayer.

Definition at line 4237 of file qgsfillsymbollayer.cpp.

◆ stopRender()

void QgsRandomMarkerFillSymbolLayer::stopRender ( QgsSymbolRenderContext context)
overridevirtual

Called after a set of rendering operations has finished on the supplied render context.

This is always preceded by a call to startRender() before all rendering operations are commenced.

Subclasses can use this method to cleanup after a set of rendering operations.

See also
startRender()
stopFeatureRender()

Implements QgsSymbolLayer.

Definition at line 3990 of file qgsfillsymbollayer.cpp.

◆ subSymbol()

QgsSymbol * QgsRandomMarkerFillSymbolLayer::subSymbol ( )
overridevirtual

Returns the symbol's sub symbol, if present.

Reimplemented from QgsSymbolLayer.

Definition at line 4144 of file qgsfillsymbollayer.cpp.

◆ usedAttributes()

QSet< QString > QgsRandomMarkerFillSymbolLayer::usedAttributes ( const QgsRenderContext context) const
overridevirtual

Returns the set of attributes referenced by the layer.

This includes attributes required by any data defined properties associated with the layer.

Reimplemented from QgsSymbolLayer.

Definition at line 4162 of file qgsfillsymbollayer.cpp.


The documentation for this class was generated from the following files: