Base class for polygon renderers generating texture images. More...

#include <qgsfillsymbollayer.h>

Inheritance diagram for QgsImageFillSymbolLayer:

[legend]

Public Member Functions
	QgsImageFillSymbolLayer ()

	~QgsImageFillSymbolLayer () override

QColor	dxfColor (QgsSymbolRenderContext &context) const override
	Gets color. More...

Qt::PenStyle	dxfPenStyle () const override
	Gets pen style. More...

double	dxfWidth (const QgsDxfExport &e, QgsSymbolRenderContext &context) const override
	Gets line width. More...

double	estimateMaxBleed (const QgsRenderContext &context) const override
	Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when drawn in the specified /a context. More...

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

QgsMapUnitScale	mapUnitScale () const override

QgsUnitTypes::RenderUnit	outputUnit () const override
	Returns the units to use for sizes and widths within 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	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	setStrokeWidthMapUnitScale (const QgsMapUnitScale &scale)
	Sets the stroke width map unit scale. More...

void	setStrokeWidthUnit (QgsUnitTypes::RenderUnit unit)
	Sets the units fo the symbol's stroke width. More...

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

const QgsMapUnitScale &	strokeWidthMapUnitScale () const
	Returns the stroke width map unit scale. More...

QgsUnitTypes::RenderUnit	strokeWidthUnit () const
	Returns the units for the symbol's stroke width. More...

QgsSymbol *	subSymbol () 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

QgsFillSymbolLayer &	operator= (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 ()

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
	The fill color. 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 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 QVector< qreal >	dxfCustomDashPattern (QgsUnitTypes::RenderUnit &unit) const
	Gets dash pattern. More...

virtual double	dxfOffset (const QgsDxfExport &e, QgsSymbolRenderContext &context) const
	Gets offset. More...

bool	enabled () const
	Returns `true` if symbol layer is enabled and will be drawn. More...

virtual QColor	fillColor () const
	Gets fill color. More...

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

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 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)
	The fill color. 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)
	Sets whether the layer's colors are locked. 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)
	Set stroke color. 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
	Gets stroke color. More...

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

Qgis::SymbolType	type () const

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...

Protected Member Functions
virtual bool	applyBrushTransformFromContext () const
	Returns `true` if the image brush should be transformed using the render context's texture origin. More...

virtual void	applyDataDefinedSettings (QgsSymbolRenderContext &context)

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

Protected Attributes
QBrush	mBrush

double	mNextAngle = 0.0

std::unique_ptr< QgsLineSymbol >	mStroke
	Custom stroke. More...

double	mStrokeWidth = 0.0
	Stroke width. More...

QgsMapUnitScale	mStrokeWidthMapUnitScale

QgsUnitTypes::RenderUnit	mStrokeWidthUnit = QgsUnitTypes::RenderMillimeters

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< 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 }
	Data definable properties. More...

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

Base class for polygon renderers generating texture images.

Definition at line 712 of file qgsfillsymbollayer.h.

Constructor & Destructor Documentation

◆ QgsImageFillSymbolLayer()

QgsImageFillSymbolLayer::QgsImageFillSymbolLayer ( )

Definition at line 1702 of file qgsfillsymbollayer.cpp.

◆ ~QgsImageFillSymbolLayer()

QgsImageFillSymbolLayer::~QgsImageFillSymbolLayer ( )

overridedefault

Member Function Documentation

◆ applyBrushTransformFromContext()

bool QgsImageFillSymbolLayer::applyBrushTransformFromContext ( ) const

protectedvirtual

Returns true if the image brush should be transformed using the render context's texture origin.

Since: QGIS 3.16

Reimplemented in QgsRasterFillSymbolLayer.

Definition at line 1874 of file qgsfillsymbollayer.cpp.

◆ applyDataDefinedSettings()

virtual void QgsImageFillSymbolLayer::applyDataDefinedSettings ( QgsSymbolRenderContext & context )

inlineprotectedvirtual

Reimplemented in QgsPointPatternFillSymbolLayer, QgsLinePatternFillSymbolLayer, QgsSVGFillSymbolLayer, and QgsRasterFillSymbolLayer.

Definition at line 779 of file qgsfillsymbollayer.h.

◆ dxfColor()

QColor QgsImageFillSymbolLayer::dxfColor ( QgsSymbolRenderContext & context ) const

overridevirtual

Gets color.

Reimplemented from QgsSymbolLayer.

Definition at line 1832 of file qgsfillsymbollayer.cpp.

◆ dxfPenStyle()

Qt::PenStyle QgsImageFillSymbolLayer::dxfPenStyle ( ) const

overridevirtual

Gets pen style.

Reimplemented from QgsSymbolLayer.

Definition at line 1842 of file qgsfillsymbollayer.cpp.

◆ dxfWidth()

double QgsImageFillSymbolLayer::dxfWidth	(	const QgsDxfExport &	e,
		QgsSymbolRenderContext &	context
	)		const

overridevirtual

Gets line width.

Reimplemented from QgsSymbolLayer.

Definition at line 1821 of file qgsfillsymbollayer.cpp.

◆ estimateMaxBleed()

double QgsImageFillSymbolLayer::estimateMaxBleed ( const QgsRenderContext & context ) const

overridevirtual

Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when drawn in the specified /a context.

For example, polygons drawn with an stroke will draw half the width of the stroke outside of the polygon. This amount is estimated, since it may be affected by data defined symbology rules.

Reimplemented from QgsSymbolLayer.

Reimplemented in QgsPointPatternFillSymbolLayer, QgsLinePatternFillSymbolLayer, and QgsRasterFillSymbolLayer.

Definition at line 1811 of file qgsfillsymbollayer.cpp.

◆ hasDataDefinedProperties()

bool QgsImageFillSymbolLayer::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.

Reimplemented in QgsPointPatternFillSymbolLayer, and QgsLinePatternFillSymbolLayer.

Definition at line 1865 of file qgsfillsymbollayer.cpp.

◆ mapUnitScale()

QgsMapUnitScale QgsImageFillSymbolLayer::mapUnitScale ( ) const

overridevirtual

Reimplemented from QgsSymbolLayer.

Reimplemented in QgsPointPatternFillSymbolLayer, QgsLinePatternFillSymbolLayer, and QgsSVGFillSymbolLayer.

Definition at line 1806 of file qgsfillsymbollayer.cpp.

◆ outputUnit()

QgsUnitTypes::RenderUnit QgsImageFillSymbolLayer::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.

Reimplemented in QgsPointPatternFillSymbolLayer, QgsLinePatternFillSymbolLayer, and QgsSVGFillSymbolLayer.

Definition at line 1796 of file qgsfillsymbollayer.cpp.

◆ renderPolygon()

void QgsImageFillSymbolLayer::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.

Reimplemented in QgsPointPatternFillSymbolLayer, and QgsRasterFillSymbolLayer.

Definition at line 1709 of file qgsfillsymbollayer.cpp.

◆ setMapUnitScale()

void QgsImageFillSymbolLayer::setMapUnitScale ( const QgsMapUnitScale & scale )

overridevirtual

Reimplemented from QgsSymbolLayer.

Reimplemented in QgsPointPatternFillSymbolLayer, QgsLinePatternFillSymbolLayer, and QgsSVGFillSymbolLayer.

Definition at line 1801 of file qgsfillsymbollayer.cpp.

◆ setOutputUnit()

void QgsImageFillSymbolLayer::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

unit	output units

See also: outputUnit()

Reimplemented from QgsSymbolLayer.

Reimplemented in QgsPointPatternFillSymbolLayer, QgsLinePatternFillSymbolLayer, and QgsSVGFillSymbolLayer.

Definition at line 1791 of file qgsfillsymbollayer.cpp.

◆ setStrokeWidthMapUnitScale()

void QgsImageFillSymbolLayer::setStrokeWidthMapUnitScale ( const QgsMapUnitScale & scale )

inline

Sets the stroke width map unit scale.

See also: strokeWidthMapUnitScale(); setStrokeWidthUnit()

Definition at line 744 of file qgsfillsymbollayer.h.

◆ setStrokeWidthUnit()

void QgsImageFillSymbolLayer::setStrokeWidthUnit ( QgsUnitTypes::RenderUnit unit )

inline

Sets the units fo the symbol's stroke width.

See also: strokeWidthUnit(); setStrokeWidthMapUnitScale()

Definition at line 729 of file qgsfillsymbollayer.h.

◆ setSubSymbol()

bool QgsImageFillSymbolLayer::setSubSymbol ( QgsSymbol * symbol )

overridevirtual

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

Reimplemented from QgsSymbolLayer.

Reimplemented in QgsPointPatternFillSymbolLayer, QgsLinePatternFillSymbolLayer, and QgsRasterFillSymbolLayer.

Definition at line 1766 of file qgsfillsymbollayer.cpp.

◆ strokeWidthMapUnitScale()

const QgsMapUnitScale& QgsImageFillSymbolLayer::strokeWidthMapUnitScale ( ) const

inline

Returns the stroke width map unit scale.

See also: setStrokeWidthMapUnitScale(); strokeWidthUnit()

Since: QGIS 2.16

Definition at line 754 of file qgsfillsymbollayer.h.

◆ strokeWidthUnit()

QgsUnitTypes::RenderUnit QgsImageFillSymbolLayer::strokeWidthUnit ( ) const

inline

Returns the units for the symbol's stroke width.

See also: setStrokeWidthUnit(); strokeWidthMapUnitScale()

Definition at line 736 of file qgsfillsymbollayer.h.

◆ subSymbol()

QgsSymbol * QgsImageFillSymbolLayer::subSymbol ( )

overridevirtual

Returns the symbol's sub symbol, if present.

Reimplemented from QgsSymbolLayer.

Reimplemented in QgsPointPatternFillSymbolLayer, QgsLinePatternFillSymbolLayer, and QgsRasterFillSymbolLayer.

Definition at line 1761 of file qgsfillsymbollayer.cpp.

◆ usedAttributes()

QSet< QString > QgsImageFillSymbolLayer::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.

Reimplemented in QgsPointPatternFillSymbolLayer, and QgsLinePatternFillSymbolLayer.

Definition at line 1857 of file qgsfillsymbollayer.cpp.

Member Data Documentation

◆ mBrush

QBrush QgsImageFillSymbolLayer::mBrush

protected

Definition at line 768 of file qgsfillsymbollayer.h.

◆ mNextAngle

double QgsImageFillSymbolLayer::mNextAngle = 0.0

protected

Definition at line 769 of file qgsfillsymbollayer.h.

◆ mStroke

std::unique_ptr< QgsLineSymbol > QgsImageFillSymbolLayer::mStroke

protected

Custom stroke.

Definition at line 777 of file qgsfillsymbollayer.h.

◆ mStrokeWidth

double QgsImageFillSymbolLayer::mStrokeWidth = 0.0

protected

Stroke width.

Definition at line 772 of file qgsfillsymbollayer.h.

◆ mStrokeWidthMapUnitScale

QgsMapUnitScale QgsImageFillSymbolLayer::mStrokeWidthMapUnitScale

protected

Definition at line 774 of file qgsfillsymbollayer.h.

◆ mStrokeWidthUnit

QgsUnitTypes::RenderUnit QgsImageFillSymbolLayer::mStrokeWidthUnit = QgsUnitTypes::RenderMillimeters

protected

Definition at line 773 of file qgsfillsymbollayer.h.

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

/build/qgis-3.22.4+99unstable/src/core/symbology/qgsfillsymbollayer.h
/build/qgis-3.22.4+99unstable/src/core/symbology/qgsfillsymbollayer.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsImageFillSymbolLayer()

◆ ~QgsImageFillSymbolLayer()

Member Function Documentation

◆ applyBrushTransformFromContext()

◆ applyDataDefinedSettings()

◆ dxfColor()

◆ dxfPenStyle()

◆ dxfWidth()

◆ estimateMaxBleed()

◆ hasDataDefinedProperties()

◆ mapUnitScale()

◆ outputUnit()

◆ renderPolygon()

◆ setMapUnitScale()

◆ setOutputUnit()

◆ setStrokeWidthMapUnitScale()

◆ setStrokeWidthUnit()

◆ setSubSymbol()

◆ strokeWidthMapUnitScale()

◆ strokeWidthUnit()

◆ subSymbol()

◆ usedAttributes()

Member Data Documentation

◆ mBrush

◆ mNextAngle

◆ mStroke

◆ mStrokeWidth

◆ mStrokeWidthMapUnitScale

◆ mStrokeWidthUnit