#include <qgsfillsymbollayer.h>

Inheritance diagram for QgsCentroidFillSymbolLayer:

Public Member Functions
	QgsCentroidFillSymbolLayer ()

	~QgsCentroidFillSymbolLayer () override

bool	canCauseArtifactsBetweenAdjacentTiles () const override
	Returns `true` if the symbol layer rendering can cause visible artifacts across a single feature when the feature is rendered as a series of adjacent map tiles each containing a portion of the feature's geometry. More...

bool	clipOnCurrentPartOnly () const
	Returns `true` if point markers should be clipped to the current part boundary only. More...

bool	clipPoints () const
	Returns `true` if point markers should be clipped to the polygon boundary. More...

QgsCentroidFillSymbolLayer *	clone () const override
	Shall be reimplemented by subclasses to create a deep copy of the instance. More...

QColor	color () const override
	Returns the "representative" color of the symbol layer. 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

Qgis::RenderUnit	outputUnit () const override
	Returns the units to use for sizes and widths within the symbol layer. More...

bool	pointOnAllParts () const
	Returns whether a point is drawn for all parts or only on the biggest part of multi-part features. More...

bool	pointOnSurface () const

QVariantMap	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, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
	Renders the fill symbol layer for the polygon whose outer ring is defined by points, using the given render context. More...

void	setClipOnCurrentPartOnly (bool clipOnCurrentPartOnly)
	Sets whether point markers should be clipped to the current part boundary only. More...

void	setClipPoints (bool clipPoints)
	Sets whether point markers should be clipped to the polygon boundary. More...

void	setColor (const QColor &color) override
	Sets the "representative" color for the symbol layer. More...

void	setMapUnitScale (const QgsMapUnitScale &scale) override

void	setOutputUnit (Qgis::RenderUnit unit) override
	Sets the units to use for sizes and widths within the symbol layer. More...

void	setPointOnAllParts (bool pointOnAllParts)
	Sets whether a point is drawn for all parts or only on the biggest part of multi-part features. More...

void	setPointOnSurface (bool pointOnSurface)

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...

QgsSymbol *	subSymbol () override
	Returns the symbol's sub symbol, if present. More...

void	toSld (QDomDocument &doc, QDomElement &element, const QVariantMap &props) const override
	Saves the symbol layer as SLD. More...

QSet< QString >	usedAttributes (const QgsRenderContext &context) const override
	Returns the set of attributes referenced by the layer. More...

bool	usesMapUnits () const override
	Returns `true` if the symbol layer has any components which use map unit based sizes. 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

QgsFillSymbolLayer &	operator= (const QgsFillSymbolLayer &other)=delete
	QgsFillSymbolLayer cannot be copied. More...

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, using the given render context. More...

void	setAngle (double angle)

virtual QImage	toTiledPatternImage () const
	Renders the symbol layer as an image that can be used as a seamless pattern fill for polygons, this method is used by SLD export to generate image tiles for ExternalGraphic polygon fills. More...

Public Member Functions inherited from QgsSymbolLayer
	QgsSymbolLayer (const QgsSymbolLayer &other)=delete
	QgsSymbolLayer cannot be copied. More...

virtual	~QgsSymbolLayer ()

virtual bool	canCauseArtifactsBetweenAdjacentTiles () const
	Returns `true` if the symbol layer rendering can cause visible artifacts across a single feature when the feature is rendered as a series of adjacent map tiles each containing a portion of the feature's geometry. More...

virtual QgsSymbolLayer *	clone () const =0
	Shall be reimplemented by subclasses to create a deep copy of the instance. More...

virtual QColor	color () const
	Returns the "representative" color of the symbol layer. More...

QgsPropertyCollection &	dataDefinedProperties ()
	Returns a reference to the symbol layer's property collection, used for data defined overrides. More...

const QgsPropertyCollection &	dataDefinedProperties () const
	Returns a reference to the symbol layer's property collection, used for data defined overrides. More...

virtual void	drawPreviewIcon (QgsSymbolRenderContext &context, QSize size)=0

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 (Qgis::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
	Returns the fill color for the symbol layer. More...

virtual Qgis::SymbolLayerFlags	flags () const
	Returns flags which control the symbol layer's behavior. More...

virtual bool	hasDataDefinedProperties () const
	Returns `true` if the symbol layer (or any of its sub-symbols) contains data defined properties. More...

QString	id () const
	Returns symbol layer identifier This id is unique in the whole project. More...

virtual bool	isCompatibleWithSymbol (QgsSymbol *symbol) const
	Returns if the layer can be used below the specified symbol. More...

bool	isLocked () const
	Returns `true` if the symbol layer colors are locked and the layer will ignore any symbol-level color changes. More...

virtual QString	layerType () const =0
	Returns a string that represents this layer type. More...

virtual QgsMapUnitScale	mapUnitScale () const

virtual QList< QgsSymbolLayerReference >	masks () const
	Returns masks defined by this symbol layer. More...

virtual QString	ogrFeatureStyle (double mmScaleFactor, double mapUnitScaleFactor) const

QgsSymbolLayer &	operator= (const QgsSymbolLayer &other)=delete
	QgsSymbolLayer cannot be copied. More...

virtual Qgis::RenderUnit	outputUnit () const
	Returns the units to use for sizes and widths within the symbol layer. More...

QgsPaintEffect *	paintEffect () 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...

virtual void	prepareMasks (const QgsSymbolRenderContext &context)
	Prepares all mask internal objects according to what is defined in context This should be called prior to calling startRender() method. More...

virtual QVariantMap	properties () const =0
	Should be reimplemented by subclasses to return a string map that contains the configuration information for the symbol layer. More...

int	renderingPass () const
	Specifies the rendering pass in which this symbol layer should be rendered. More...

virtual void	setColor (const QColor &color)
	Sets the "representative" color for the symbol layer. 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)
	Sets the fill color for the symbol layer. More...

void	setId (const QString &id)
	Set symbol layer identifier This id has to be unique in the whole project. More...

void	setLocked (bool locked)
	Sets whether the layer's colors are locked. More...

virtual void	setMapUnitScale (const QgsMapUnitScale &scale)

virtual void	setOutputUnit (Qgis::RenderUnit unit)
	Sets the units to use for sizes and widths within the symbol layer. More...

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)
	Sets the stroke color for the symbol layer. More...

virtual bool	setSubSymbol (QgsSymbol *symbol)
	Sets layer's subsymbol. takes ownership of the passed symbol. More...

virtual void	startFeatureRender (const QgsFeature &feature, QgsRenderContext &context)
	Called before the layer will be rendered for a particular feature. More...

virtual void	startRender (QgsSymbolRenderContext &context)=0
	Called before a set of rendering operations commences on the supplied render context. More...

virtual void	stopFeatureRender (const QgsFeature &feature, QgsRenderContext &context)
	Called after the layer has been rendered for a particular feature. More...

virtual void	stopRender (QgsSymbolRenderContext &context)=0
	Called after a set of rendering operations has finished on the supplied render context. More...

virtual QColor	strokeColor () const
	Returns the stroke color for the symbol layer. More...

virtual QgsSymbol *	subSymbol ()
	Returns the symbol's sub symbol, if present. More...

virtual void	toSld (QDomDocument &doc, QDomElement &element, const QVariantMap &props) const
	Saves the symbol layer as SLD. More...

Qgis::SymbolType	type () const

virtual QSet< QString >	usedAttributes (const QgsRenderContext &context) const
	Returns the set of attributes referenced by the layer. More...

virtual bool	usesMapUnits () const
	Returns `true` if the symbol layer has any components which use map unit based sizes. More...

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 QgsSymbolLayer *	create (const QVariantMap &properties=QVariantMap())
	Creates a new QgsCentroidFillSymbolLayer using the specified properties map containing symbol properties (see properties()). More...

static QgsSymbolLayer *	createFromSld (QDomElement &element)

Static Public Member Functions inherited from QgsSymbolLayer
static const QgsPropertiesDefinition &	propertyDefinitions ()
	Returns the symbol layer property definitions. More...

Protected Attributes
bool	mClipOnCurrentPartOnly = false

bool	mClipPoints = false

double	mFeatureSymbolOpacity = 1

std::unique_ptr< QgsMarkerSymbol >	mMarker

bool	mPointOnAllParts = true

bool	mPointOnSurface = false

bool	mRenderingFeature = false

Protected Attributes inherited from QgsFillSymbolLayer
double	mAngle = 0.0

Protected Attributes inherited from QgsSymbolLayer
QPainterPath	mClipPath

QColor	mColor

QgsPropertyCollection	mDataDefinedProperties

bool	mEnabled = true
	True if layer is enabled and should be drawn. More...

QgsFields	mFields

QString	mId

bool	mLocked = false

std::unique_ptr< QgsPaintEffect >	mPaintEffect

int	mRenderingPass = 0

Qgis::SymbolType	mType

Additional Inherited Members
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 , PropertyFontFamily , PropertyFontStyle , PropertyDashPatternOffset , PropertyTrimStart , PropertyTrimEnd , PropertyLineStartWidthValue , PropertyLineEndWidthValue , PropertyLineStartColorValue , PropertyLineEndColorValue , PropertyMarkerClipping , PropertyRandomOffsetX , PropertyRandomOffsetY , PropertyLineClipping }
	Data definable properties. More...

Protected Member Functions inherited from QgsFillSymbolLayer
	QgsFillSymbolLayer (bool locked=false)

void	_renderPolygon (QPainter p, const QPolygonF &points, const QVector< QPolygonF > rings, QgsSymbolRenderContext &context)
	Default method to render polygon. More...

Protected Member Functions inherited from QgsSymbolLayer
	QgsSymbolLayer (Qgis::SymbolType type, bool locked=false)
	Constructor for QgsSymbolLayer. More...

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	installMasks (QgsRenderContext &context, bool recursive)
	When rendering, install masks on context painter if recursive is `true` masks are installed recursively for all children symbol layers. More...

void	removeMasks (QgsRenderContext &context, bool recursive)
	When rendering, remove previously installed masks from context painter if recursive is `true` masks are removed recursively for all children symbol layers. More...

void	restoreOldDataDefinedProperties (const QVariantMap &stringMap)
	Restores older data defined properties from string map. More...

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

Definition at line 2437 of file qgsfillsymbollayer.h.

Constructor & Destructor Documentation

◆ QgsCentroidFillSymbolLayer()

QgsCentroidFillSymbolLayer::QgsCentroidFillSymbolLayer ( )

Definition at line 4721 of file qgsfillsymbollayer.cpp.

◆ ~QgsCentroidFillSymbolLayer()

QgsCentroidFillSymbolLayer::~QgsCentroidFillSymbolLayer ( )

overridedefault

Member Function Documentation

◆ canCauseArtifactsBetweenAdjacentTiles()

bool QgsCentroidFillSymbolLayer::canCauseArtifactsBetweenAdjacentTiles ( ) const

overridevirtual

Returns true if the symbol layer rendering can cause visible artifacts across a single feature when the feature is rendered as a series of adjacent map tiles each containing a portion of the feature's geometry.

The default implementation returns false.

Since: QGIS 3.18

Reimplemented from QgsSymbolLayer.

Definition at line 4994 of file qgsfillsymbollayer.cpp.

◆ clipOnCurrentPartOnly()

bool QgsCentroidFillSymbolLayer::clipOnCurrentPartOnly ( ) const

inline

Returns true if point markers should be clipped to the current part boundary only.

See also: setClipPoints()

Since: 3.14

Definition at line 2514 of file qgsfillsymbollayer.h.

◆ clipPoints()

bool QgsCentroidFillSymbolLayer::clipPoints ( ) const

inline

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

See also: setClipPoints()

Since: 3.14

Definition at line 2498 of file qgsfillsymbollayer.h.

◆ clone()

QgsCentroidFillSymbolLayer * QgsCentroidFillSymbolLayer::clone ( ) const

overridevirtual

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

Implements QgsSymbolLayer.

Definition at line 4917 of file qgsfillsymbollayer.cpp.

◆ color()

QColor QgsCentroidFillSymbolLayer::color ( ) const

overridevirtual

Returns the "representative" color of the symbol layer.

Depending on the symbol layer type, this will have different meaning. For instance, a line symbol layer will generally return the stroke color of the layer, while a fill symbol layer will return the "fill" color instead of stroke.

Some symbol layer types will return an invalid QColor if they have no representative color associated (e.g. raster image based symbol layers).

See also: setColor(); strokeColor(); fillColor()

Reimplemented from QgsSymbolLayer.

Definition at line 4757 of file qgsfillsymbollayer.cpp.

◆ create()

QgsSymbolLayer * QgsCentroidFillSymbolLayer::create ( const QVariantMap & properties = QVariantMap() )

static

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

Caller takes ownership of the returned symbol layer.

Definition at line 4728 of file qgsfillsymbollayer.cpp.

◆ createFromSld()

QgsSymbolLayer * QgsCentroidFillSymbolLayer::createFromSld ( QDomElement & element )

static

Definition at line 4940 of file qgsfillsymbollayer.cpp.

◆ hasDataDefinedProperties()

bool QgsCentroidFillSymbolLayer::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 4985 of file qgsfillsymbollayer.cpp.

◆ layerType()

QString QgsCentroidFillSymbolLayer::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 4746 of file qgsfillsymbollayer.cpp.

◆ mapUnitScale()

QgsMapUnitScale QgsCentroidFillSymbolLayer::mapUnitScale ( ) const

overridevirtual

Reimplemented from QgsSymbolLayer.

Definition at line 5033 of file qgsfillsymbollayer.cpp.

◆ outputUnit()

Qgis::RenderUnit QgsCentroidFillSymbolLayer::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 5007 of file qgsfillsymbollayer.cpp.

◆ pointOnAllParts()

bool QgsCentroidFillSymbolLayer::pointOnAllParts ( ) const

inline

Returns whether a point is drawn for all parts or only on the biggest part of multi-part features.

See also: setPointOnAllParts()

Since: QGIS 2.16

Definition at line 2490 of file qgsfillsymbollayer.h.

◆ pointOnSurface()

bool QgsCentroidFillSymbolLayer::pointOnSurface ( ) const

inline

Definition at line 2476 of file qgsfillsymbollayer.h.

◆ properties()

QVariantMap QgsCentroidFillSymbolLayer::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 4907 of file qgsfillsymbollayer.cpp.

◆ renderPolygon()

void QgsCentroidFillSymbolLayer::renderPolygon	(	const QPolygonF &	points,
		const QVector< QPolygonF > *	rings,
		QgsSymbolRenderContext &	context
	)

overridevirtual

Renders the fill symbol layer for the polygon whose outer ring is defined by points, using the given render context.

The rings argument optionally specifies a list of polygon rings to render as holes.

Implements QgsFillSymbolLayer.

Definition at line 4772 of file qgsfillsymbollayer.cpp.

◆ setClipOnCurrentPartOnly()

void QgsCentroidFillSymbolLayer::setClipOnCurrentPartOnly ( bool clipOnCurrentPartOnly )

inline

Sets whether point markers should be clipped to the current part boundary only.

See also: clipOnCurrentPartOnly()

Since: 3.14

Definition at line 2522 of file qgsfillsymbollayer.h.

◆ setClipPoints()

void QgsCentroidFillSymbolLayer::setClipPoints ( bool clipPoints )

inline

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

See also: clipPoints()

Since: 3.14

Definition at line 2506 of file qgsfillsymbollayer.h.

◆ setColor()

void QgsCentroidFillSymbolLayer::setColor ( const QColor & color )

overridevirtual

Sets the "representative" color for the symbol layer.

Depending on the symbol layer type, this will have different meaning. For instance, a line symbol layer will generally set the stroke color of the layer, while a fill symbol layer will set the "fill" color instead of stroke.

See also: color(); setStrokeColor(); setFillColor()

Reimplemented from QgsSymbolLayer.

Definition at line 4751 of file qgsfillsymbollayer.cpp.

◆ setMapUnitScale()

void QgsCentroidFillSymbolLayer::setMapUnitScale ( const QgsMapUnitScale & scale )

overridevirtual

Reimplemented from QgsSymbolLayer.

Definition at line 5025 of file qgsfillsymbollayer.cpp.

◆ setOutputUnit()

void QgsCentroidFillSymbolLayer::setOutputUnit ( Qgis::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

unit	output units

See also: outputUnit()

Reimplemented from QgsSymbolLayer.

Definition at line 4999 of file qgsfillsymbollayer.cpp.

◆ setPointOnAllParts()

void QgsCentroidFillSymbolLayer::setPointOnAllParts ( bool pointOnAllParts )

inline

Sets whether a point is drawn for all parts or only on the biggest part of multi-part features.

See also: pointOnAllParts()

Since: QGIS 2.16

Definition at line 2483 of file qgsfillsymbollayer.h.

◆ setPointOnSurface()

void QgsCentroidFillSymbolLayer::setPointOnSurface ( bool pointOnSurface )

inline

Definition at line 2475 of file qgsfillsymbollayer.h.

◆ setSubSymbol()

bool QgsCentroidFillSymbolLayer::setSubSymbol ( QgsSymbol * symbol )

overridevirtual

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

Reimplemented from QgsSymbolLayer.

Definition at line 4962 of file qgsfillsymbollayer.cpp.

◆ startFeatureRender()

void QgsCentroidFillSymbolLayer::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 4796 of file qgsfillsymbollayer.cpp.

◆ startRender()

void QgsCentroidFillSymbolLayer::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 4762 of file qgsfillsymbollayer.cpp.

◆ stopFeatureRender()

void QgsCentroidFillSymbolLayer::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 4804 of file qgsfillsymbollayer.cpp.

◆ stopRender()

void QgsCentroidFillSymbolLayer::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 4767 of file qgsfillsymbollayer.cpp.

◆ subSymbol()

QgsSymbol * QgsCentroidFillSymbolLayer::subSymbol ( )

overridevirtual

Returns the symbol's sub symbol, if present.

Reimplemented from QgsSymbolLayer.

Definition at line 4957 of file qgsfillsymbollayer.cpp.

◆ toSld()

void QgsCentroidFillSymbolLayer::toSld	(	QDomDocument &	doc,
		QDomElement &	element,
		const QVariantMap &	props
	)		const

overridevirtual

Saves the symbol layer as SLD.

Reimplemented from QgsSymbolLayer.

Definition at line 4932 of file qgsfillsymbollayer.cpp.

◆ usedAttributes()

QSet< QString > QgsCentroidFillSymbolLayer::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 4975 of file qgsfillsymbollayer.cpp.

◆ usesMapUnits()

bool QgsCentroidFillSymbolLayer::usesMapUnits ( ) const

overridevirtual

Returns true if the symbol layer has any components which use map unit based sizes.

Since: QGIS 3.18

Reimplemented from QgsSymbolLayer.

Definition at line 5016 of file qgsfillsymbollayer.cpp.

Member Data Documentation

◆ mClipOnCurrentPartOnly

bool QgsCentroidFillSymbolLayer::mClipOnCurrentPartOnly = false

protected

Definition at line 2533 of file qgsfillsymbollayer.h.

◆ mClipPoints

bool QgsCentroidFillSymbolLayer::mClipPoints = false

protected

Definition at line 2532 of file qgsfillsymbollayer.h.

◆ mFeatureSymbolOpacity

double QgsCentroidFillSymbolLayer::mFeatureSymbolOpacity = 1

protected

Definition at line 2536 of file qgsfillsymbollayer.h.

◆ mMarker

std::unique_ptr< QgsMarkerSymbol > QgsCentroidFillSymbolLayer::mMarker

protected

Definition at line 2529 of file qgsfillsymbollayer.h.

◆ mPointOnAllParts

bool QgsCentroidFillSymbolLayer::mPointOnAllParts = true

protected

Definition at line 2531 of file qgsfillsymbollayer.h.

◆ mPointOnSurface

bool QgsCentroidFillSymbolLayer::mPointOnSurface = false

protected

Definition at line 2530 of file qgsfillsymbollayer.h.

◆ mRenderingFeature

bool QgsCentroidFillSymbolLayer::mRenderingFeature = false

protected

Definition at line 2535 of file qgsfillsymbollayer.h.

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

/build/qgis-3.30.0+99sid/src/core/symbology/qgsfillsymbollayer.h
/build/qgis-3.30.0+99sid/src/core/symbology/qgsfillsymbollayer.cpp

Public Member Functions

Static Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsCentroidFillSymbolLayer()

◆ ~QgsCentroidFillSymbolLayer()

Member Function Documentation

◆ canCauseArtifactsBetweenAdjacentTiles()

◆ clipOnCurrentPartOnly()

◆ clipPoints()

◆ clone()

◆ color()

◆ create()

◆ createFromSld()

◆ hasDataDefinedProperties()

◆ layerType()

◆ mapUnitScale()

◆ outputUnit()

◆ pointOnAllParts()

◆ pointOnSurface()

◆ properties()

◆ renderPolygon()

◆ setClipOnCurrentPartOnly()

◆ setClipPoints()

◆ setColor()

◆ setMapUnitScale()

◆ setOutputUnit()

◆ setPointOnAllParts()

◆ setPointOnSurface()

◆ setSubSymbol()

◆ startFeatureRender()

◆ startRender()

◆ stopFeatureRender()

◆ stopRender()

◆ subSymbol()

◆ toSld()

◆ usedAttributes()

◆ usesMapUnits()

Member Data Documentation

◆ mClipOnCurrentPartOnly

◆ mClipPoints

◆ mFeatureSymbolOpacity

◆ mMarker

◆ mPointOnAllParts

◆ mPointOnSurface

◆ mRenderingFeature