Base class for line symbol layer types which draws line sections using a QBrush. More...

#include <qgslinesymbollayer.h>

Inheritance diagram for QgsAbstractBrushedLineSymbolLayer:

[legend]

Public Member Functions
Qt::PenCapStyle	penCapStyle () const
	Returns the pen cap style used to render the line (e.g.

Qt::PenJoinStyle	penJoinStyle () const
	Returns the pen join style used to render the line (e.g.

void	setPenCapStyle (Qt::PenCapStyle style)
	Sets the pen cap style used to render the line (e.g.

void	setPenJoinStyle (Qt::PenJoinStyle style)
	Sets the pen join style used to render the line (e.g.

Public Member Functions inherited from QgsLineSymbolLayer
	QgsLineSymbolLayer (const QgsLineSymbolLayer &other)=delete

void	drawPreviewIcon (QgsSymbolRenderContext &context, QSize size) override

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

QgsMapUnitScale	mapUnitScale () const override

double	offset () const
	Returns the line's offset.

const QgsMapUnitScale &	offsetMapUnitScale () const
	Returns the map unit scale for the line's offset.

Qgis::RenderUnit	offsetUnit () const
	Returns the units for the line's offset.

QgsLineSymbolLayer &	operator= (const QgsLineSymbolLayer &other)=delete

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.

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	ringFilter () const
	Returns the line symbol layer's ring filter, which controls which rings are rendered when the line symbol is being used to draw a polygon's rings.

void	setMapUnitScale (const QgsMapUnitScale &scale) override

void	setOffset (double offset)
	Sets the line's offset.

void	setOffsetMapUnitScale (const QgsMapUnitScale &scale)
	Sets the map unit scale for the line's offset.

void	setOffsetUnit (Qgis::RenderUnit unit)
	Sets the unit for the line's offset.

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

void	setRingFilter (QgsLineSymbolLayer::RenderRingFilter filter)
	Sets the line symbol layer's ring filter, which controls which rings are rendered when the line symbol is being used to draw a polygon's rings.

virtual void	setWidth (double width)
	Sets the width of the line symbol layer.

void	setWidthMapUnitScale (const QgsMapUnitScale &scale)

void	setWidthUnit (Qgis::RenderUnit unit)
	Sets the units for the line's width.

virtual double	width () const
	Returns the estimated width for the line symbol layer.

virtual double	width (const QgsRenderContext &context) const
	Returns the line symbol layer width, in painter units.

const QgsMapUnitScale &	widthMapUnitScale () const

Qgis::RenderUnit	widthUnit () const
	Returns the units for the line's width.

Public Member Functions inherited from QgsSymbolLayer
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.

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

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

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

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

virtual double	dxfAngle (QgsSymbolRenderContext &context) const
	Gets angle.

virtual QColor	dxfBrushColor (QgsSymbolRenderContext &context) const
	Gets brush/fill color.

virtual Qt::BrushStyle	dxfBrushStyle () const
	Gets brush/fill style.

virtual QColor	dxfColor (QgsSymbolRenderContext &context) const
	Gets color.

virtual QVector< qreal >	dxfCustomDashPattern (Qgis::RenderUnit &unit) const
	Gets dash pattern.

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

virtual Qt::PenStyle	dxfPenStyle () const
	Gets pen style.

virtual double	dxfSize (const QgsDxfExport &e, QgsSymbolRenderContext &context) const
	Gets marker size.

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

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.

virtual QColor	fillColor () const
	Returns the fill color for the symbol layer.

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

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

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

bool	installMasks (QgsRenderContext &context, bool recursive, const QRectF &rect=QRectF())
	When rendering, install masks on context painter.

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

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

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

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

virtual QString	ogrFeatureStyle (double mmScaleFactor, double mapUnitScaleFactor) const

QgsSymbolLayer &	operator= (const QgsSymbolLayer &other)=delete

QgsPaintEffect *	paintEffect () const
	Returns the current paint effect for the layer.

virtual void	prepareExpressions (const QgsSymbolRenderContext &context)
	Prepares all data defined property expressions for evaluation.

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.

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

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

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

void	setDataDefinedProperties (const QgsPropertyCollection &collection)
	Sets the symbol layer's property collection, used for data defined overrides.

virtual void	setDataDefinedProperty (Property key, const QgsProperty &property)
	Sets a data defined property for the layer.

void	setEnabled (bool enabled)
	Sets whether symbol layer is enabled and should be drawn.

virtual void	setFillColor (const QColor &color)
	Sets 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.

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

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.

virtual void	setStrokeColor (const QColor &color)
	Sets the stroke color for the symbol layer.

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

void	setUserFlags (Qgis::SymbolLayerUserFlags flags)
	Sets user-controlled flags which control the symbol layer's behavior.

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

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

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

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

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

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

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

Qgis::SymbolType	type () const

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

Qgis::SymbolLayerUserFlags	userFlags () const
	Returns user-controlled flags which control the symbol layer's behavior.

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

Protected Member Functions
void	renderPolylineUsingBrush (const QPolygonF &points, QgsSymbolRenderContext &context, const QBrush &brush, double patternThickness, double patternLength)
	Renders a polyline of points using the specified brush.

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

Protected Member Functions inherited from QgsSymbolLayer
	QgsSymbolLayer (const QgsSymbolLayer &other)

	QgsSymbolLayer (Qgis::SymbolType type, bool locked=false)
	Constructor for QgsSymbolLayer.

void	copyDataDefinedProperties (QgsSymbolLayer *destLayer) const
	Copies all data defined properties of this layer to another symbol layer.

void	copyPaintEffect (QgsSymbolLayer *destLayer) const
	Copies paint effect of this layer to another symbol layer.

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.

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

bool	shouldRenderUsingSelectionColor (const QgsSymbolRenderContext &context) const
	Returns `true` if the symbol layer should be rendered using the selection color from the render context.

Protected Attributes
Qt::PenCapStyle	mPenCapStyle = Qt::PenCapStyle::RoundCap

Qt::PenJoinStyle	mPenJoinStyle = Qt::PenJoinStyle::RoundJoin

Protected Attributes inherited from QgsLineSymbolLayer
double	mOffset = 0

QgsMapUnitScale	mOffsetMapUnitScale

Qgis::RenderUnit	mOffsetUnit = Qgis::RenderUnit::Millimeters

RenderRingFilter	mRingFilter = AllRings

double	mWidth = 0

QgsMapUnitScale	mWidthMapUnitScale

Qgis::RenderUnit	mWidthUnit = Qgis::RenderUnit::Millimeters

Protected Attributes inherited from QgsSymbolLayer
QPainterPath	mClipPath

QColor	mColor

QgsPropertyCollection	mDataDefinedProperties

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

QgsFields	mFields

QString	mId

bool	mLocked = false

std::unique_ptr< QgsPaintEffect >	mPaintEffect

int	mRenderingPass = 0

Qgis::SymbolType	mType

Qgis::SymbolLayerUserFlags	mUserFlags
	User controlled flags.

Additional Inherited Members
Public Types inherited from QgsLineSymbolLayer
enum	RenderRingFilter { AllRings , ExteriorRingOnly , InteriorRingsOnly }
	Options for filtering rings when the line symbol layer is being used to render a polygon's rings. More...

Public Types inherited from QgsSymbolLayer
enum class	Property : int { Size = 0 , Angle , Name , FillColor , StrokeColor , StrokeWidth , StrokeStyle , Offset , Character , Width , Height , PreserveAspectRatio , FillStyle , JoinStyle , SecondaryColor , LineAngle , LineDistance , GradientType , CoordinateMode , GradientSpread , GradientReference1X , GradientReference1Y , GradientReference2X , GradientReference2Y , GradientReference1IsCentroid , GradientReference2IsCentroid , BlurRadius , ShapeburstUseWholeShape , ShapeburstMaxDistance , ShapeburstIgnoreRings , File , DistanceX , DistanceY , DisplacementX , DisplacementY , Opacity , CustomDash , CapStyle , Placement , Interval , OffsetAlongLine , AverageAngleLength , HorizontalAnchor , VerticalAnchor , LayerEnabled , ArrowWidth , ArrowStartWidth , ArrowHeadLength , ArrowHeadThickness , ArrowHeadType , ArrowType , OffsetX , OffsetY , PointCount , RandomSeed , ClipPoints , DensityArea , FontFamily , FontStyle , DashPatternOffset , TrimStart , TrimEnd , LineStartWidthValue , LineEndWidthValue , LineStartColorValue , LineEndColorValue , MarkerClipping , RandomOffsetX , RandomOffsetY , LineClipping , SkipMultiples , ShowMarker }
	Data definable properties. More...

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

Static Protected Attributes inherited from QgsSymbolLayer
static const bool	SELECT_FILL_BORDER = false
	Whether fill styles for selected features also highlight symbol stroke.

static const bool	SELECT_FILL_STYLE = false
	Whether fill styles for selected features uses symbol layer style.

static const bool	SELECTION_IS_OPAQUE = true
	Whether styles for selected features ignore symbol alpha.

Detailed Description

Base class for line symbol layer types which draws line sections using a QBrush.

Since: QGIS 3.24

Definition at line 1146 of file qgslinesymbollayer.h.

Member Function Documentation

◆ penCapStyle()

Qt::PenCapStyle QgsAbstractBrushedLineSymbolLayer::penCapStyle ( ) const

inline

Returns the pen cap style used to render the line (e.g.

flat, square, round, etc).

See also: setPenCapStyle()

Definition at line 1169 of file qgslinesymbollayer.h.

◆ penJoinStyle()

Qt::PenJoinStyle QgsAbstractBrushedLineSymbolLayer::penJoinStyle ( ) const

inline

Returns the pen join style used to render the line (e.g.

miter, bevel, round, etc).

See also: setPenJoinStyle()

Definition at line 1155 of file qgslinesymbollayer.h.

◆ renderPolylineUsingBrush()

void QgsAbstractBrushedLineSymbolLayer::renderPolylineUsingBrush	(	const QPolygonF &	points,
		QgsSymbolRenderContext &	context,
		const QBrush &	brush,
		double	patternThickness,
		double	patternLength
	)

protected

Renders a polyline of points using the specified brush.

Definition at line 3003 of file qgslinesymbollayer.cpp.

◆ setPenCapStyle()

void QgsAbstractBrushedLineSymbolLayer::setPenCapStyle ( Qt::PenCapStyle style )

inline

Sets the pen cap style used to render the line (e.g.

flat, square, round, etc).

See also: penCapStyle()

Definition at line 1176 of file qgslinesymbollayer.h.

◆ setPenJoinStyle()

void QgsAbstractBrushedLineSymbolLayer::setPenJoinStyle ( Qt::PenJoinStyle style )

inline

Sets the pen join style used to render the line (e.g.

miter, bevel, round, etc).

See also: penJoinStyle()

Definition at line 1162 of file qgslinesymbollayer.h.

Member Data Documentation

◆ mPenCapStyle

Qt::PenCapStyle QgsAbstractBrushedLineSymbolLayer::mPenCapStyle = Qt::PenCapStyle::RoundCap

protected

Definition at line 1187 of file qgslinesymbollayer.h.

◆ mPenJoinStyle

Qt::PenJoinStyle QgsAbstractBrushedLineSymbolLayer::mPenJoinStyle = Qt::PenJoinStyle::RoundJoin

protected

Definition at line 1186 of file qgslinesymbollayer.h.

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

/build/qgis-3.41.0+git20241214+cea29feecf2+99sid/src/core/symbology/qgslinesymbollayer.h
/build/qgis-3.41.0+git20241214+cea29feecf2+99sid/src/core/symbology/qgslinesymbollayer.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ penCapStyle()

◆ penJoinStyle()

◆ renderPolylineUsingBrush()

◆ setPenCapStyle()

◆ setPenJoinStyle()

Member Data Documentation

◆ mPenCapStyle

◆ mPenJoinStyle