A simple line symbol layer, which renders lines using a line in a variety of styles (e.g. More...

#include <qgslinesymbollayer.h>

Inheritance diagram for QgsSimpleLineSymbolLayer:

[legend]

Public Member Functions
	QgsSimpleLineSymbolLayer (const QColor &color=DEFAULT_SIMPLELINE_COLOR, double width=DEFAULT_SIMPLELINE_WIDTH, Qt::PenStyle penStyle=DEFAULT_SIMPLELINE_PENSTYLE)
	Constructor for QgsSimpleLineSymbolLayer.

	~QgsSimpleLineSymbolLayer () override

bool	alignDashPattern () const
	Returns `true` if dash patterns should be aligned to the start and end of lines, by applying subtle tweaks to the pattern sizing in order to ensure that the end of a line is represented by a complete dash element.

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.

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

const QgsMapUnitScale &	customDashPatternMapUnitScale () const
	Returns the map unit scale for lengths used in the custom dash pattern.

Qgis::RenderUnit	customDashPatternUnit () const
	Returns the units for lengths used in the custom dash pattern.

QVector< qreal >	customDashVector () const
	Returns the custom dash vector, which is the pattern of alternating drawn/skipped lengths used while rendering a custom dash pattern.

double	dashPatternOffset () const
	Returns the dash pattern offset, which dictates how far along the dash pattern the pattern should start rendering at.

const QgsMapUnitScale &	dashPatternOffsetMapUnitScale () const
	Returns the map unit scale for the dash pattern offset value.

Qgis::RenderUnit	dashPatternOffsetUnit () const
	Returns the units for the dash pattern offset.

bool	drawInsidePolygon () const
	Returns `true` if the line should only be drawn inside polygons, and any portion of the line which falls outside the polygon should be clipped away.

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

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

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

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

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

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.

QString	layerType () const override
	Returns a string that represents this layer type.

QgsMapUnitScale	mapUnitScale () const override

QString	ogrFeatureStyle (double mmScaleFactor, double mapUnitScaleFactor) const override

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

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.

Qt::PenStyle	penStyle () const
	Returns the pen style used to render the line (e.g.

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

void	renderPolygonStroke (const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
	Renders the line symbol layer along the outline of polygon, using the given render context.

void	renderPolyline (const QPolygonF &points, QgsSymbolRenderContext &context) override
	Renders the line symbol layer along the line joining points, using the given render context.

void	setAlignDashPattern (bool enabled)
	Sets whether dash patterns should be aligned to the start and end of lines, by applying subtle tweaks to the pattern sizing in order to ensure that the end of a line is represented by a complete dash element.

void	setCustomDashPatternMapUnitScale (const QgsMapUnitScale &scale)
	Sets the map unit scale for lengths used in the custom dash pattern.

void	setCustomDashPatternUnit (Qgis::RenderUnit unit)
	Sets the unit for lengths used in the custom dash pattern.

void	setCustomDashVector (const QVector< qreal > &vector)
	Sets the custom dash vector, which is the pattern of alternating drawn/skipped lengths used while rendering a custom dash pattern.

void	setDashPatternOffset (double offset)
	Sets the dash pattern offset, which dictates how far along the dash pattern the pattern should start rendering at.

void	setDashPatternOffsetMapUnitScale (const QgsMapUnitScale &scale)
	Sets the map unit scale for the dash pattern offset.

void	setDashPatternOffsetUnit (Qgis::RenderUnit unit)
	Sets the unit for the dash pattern offset.

void	setDrawInsidePolygon (bool drawInsidePolygon)
	Sets whether the line should only be drawn inside polygons, and any portion of the line which falls outside the polygon should be clipped away.

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.

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.

void	setPenStyle (Qt::PenStyle style)
	Sets the pen style used to render the line (e.g.

void	setTrimDistanceEnd (double distance)
	Sets the trim distance for the end of the line, which dictates a length from the end of the line at which the actual rendering should end.

void	setTrimDistanceEndMapUnitScale (const QgsMapUnitScale &scale)
	Sets the map unit scale for the trim distance for the end of the line.

void	setTrimDistanceEndUnit (Qgis::RenderUnit unit)
	Sets the unit for the trim distance for the end of the line.

void	setTrimDistanceStart (double distance)
	Sets the trim distance for the start of the line, which dictates a length from the start of the line at which the actual rendering should start.

void	setTrimDistanceStartMapUnitScale (const QgsMapUnitScale &scale)
	Sets the map unit scale for the trim distance for the start of the line.

void	setTrimDistanceStartUnit (Qgis::RenderUnit unit)
	Sets the unit for the trim distance for the start of the line.

void	setTweakDashPatternOnCorners (bool enabled)
	Sets whether dash patterns tweaks should be applied on sharp corners, to ensure that a double-length dash is drawn running into and out of the corner.

void	setUseCustomDashPattern (bool b)
	Sets whether the line uses a custom dash pattern.

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

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

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

double	trimDistanceEnd () const
	Returns the trim distance for the end of the line, which dictates a length from the end of the line at which the actual rendering should end.

const QgsMapUnitScale &	trimDistanceEndMapUnitScale () const
	Returns the map unit scale for the trim distance for the end of the line.

Qgis::RenderUnit	trimDistanceEndUnit () const
	Returns the unit for the trim distance for the end of the line.

double	trimDistanceStart () const
	Returns the trim distance for the start of the line, which dictates a length from the start of the line at which the actual rendering should start.

const QgsMapUnitScale &	trimDistanceStartMapUnitScale () const
	Returns the map unit scale for the trim distance for the start of the line.

Qgis::RenderUnit	trimDistanceStartUnit () const
	Returns the unit for the trim distance for the start of the line.

bool	tweakDashPatternOnCorners () const
	Returns `true` if dash patterns tweaks should be applied on sharp corners, to ensure that a double-length dash is drawn running into and out of the corner.

bool	useCustomDashPattern () const
	Returns `true` if the line uses a custom dash pattern.

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

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

void	drawPreviewIcon (QgsSymbolRenderContext &context, QSize size) 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
	QgsLineSymbolLayer cannot be copied.

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

virtual	~QgsSymbolLayer ()

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 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 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.

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

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

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.

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

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

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

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	writeDxf (QgsDxfExport &e, double mmMapUnitScaleFactor, const QString &layerName, QgsSymbolRenderContext &context, QPointF shift=QPointF(0.0, 0.0)) const
	write as DXF

Static Public Member Functions
static QgsSymbolLayer *	create (const QVariantMap &properties=QVariantMap())
	Creates a new QgsSimpleLineSymbolLayer, using the settings serialized in the properties map (corresponding to the output from QgsSimpleLineSymbolLayer::properties() ).

static QgsSymbolLayer *	createFromSld (QDomElement &element)
	Creates a new QgsSimpleLineSymbolLayer from an SLD XML DOM element.

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

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 }
	Data definable properties. More...

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

Protected Member Functions inherited from QgsSymbolLayer
	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	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.

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 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.

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

A simple line symbol layer, which renders lines using a line in a variety of styles (e.g.

solid, dotted, dashed).

Definition at line 44 of file qgslinesymbollayer.h.

Constructor & Destructor Documentation

◆ QgsSimpleLineSymbolLayer()

QgsSimpleLineSymbolLayer::QgsSimpleLineSymbolLayer	(	const QColor &	color = `DEFAULT_SIMPLELINE_COLOR`,
		double	width = `DEFAULT_SIMPLELINE_WIDTH`,
		Qt::PenStyle	penStyle = `DEFAULT_SIMPLELINE_PENSTYLE`
	)

Constructor for QgsSimpleLineSymbolLayer.

Creates a simple line symbol in the specified color, width (in millimeters) and penStyle.

Definition at line 44 of file qgslinesymbollayer.cpp.

◆ ~QgsSimpleLineSymbolLayer()

QgsSimpleLineSymbolLayer::~QgsSimpleLineSymbolLayer ( )

overridedefault

Member Function Documentation

◆ alignDashPattern()

bool QgsSimpleLineSymbolLayer::alignDashPattern ( ) const

Returns true if dash patterns should be aligned to the start and end of lines, by applying subtle tweaks to the pattern sizing in order to ensure that the end of a line is represented by a complete dash element.

See also: setAlignDashPattern(); tweakDashPatternOnCorners()

Since: QGIS 3.16

Definition at line 1130 of file qgslinesymbollayer.cpp.

◆ canCauseArtifactsBetweenAdjacentTiles()

bool QgsSimpleLineSymbolLayer::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 1125 of file qgslinesymbollayer.cpp.

◆ clone()

QgsSimpleLineSymbolLayer * QgsSimpleLineSymbolLayer::clone ( ) const

overridevirtual

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

Implements QgsSymbolLayer.

Definition at line 541 of file qgslinesymbollayer.cpp.

◆ create()

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

static

Creates a new QgsSimpleLineSymbolLayer, using the settings serialized in the properties map (corresponding to the output from QgsSimpleLineSymbolLayer::properties() ).

Definition at line 100 of file qgslinesymbollayer.cpp.

◆ createFromSld()

QgsSymbolLayer * QgsSimpleLineSymbolLayer::createFromSld ( QDomElement & element )

static

Creates a new QgsSimpleLineSymbolLayer from an SLD XML DOM element.

Definition at line 622 of file qgslinesymbollayer.cpp.

◆ customDashPatternMapUnitScale()

const QgsMapUnitScale & QgsSimpleLineSymbolLayer::customDashPatternMapUnitScale ( ) const

inline

Returns the map unit scale for lengths used in the custom dash pattern.

See also: setCustomDashPatternMapUnitScale()

Definition at line 170 of file qgslinesymbollayer.h.

◆ customDashPatternUnit()

Qgis::RenderUnit QgsSimpleLineSymbolLayer::customDashPatternUnit ( ) const

inline

Returns the units for lengths used in the custom dash pattern.

See also: setCustomDashPatternUnit()

Definition at line 164 of file qgslinesymbollayer.h.

◆ customDashVector()

QVector< qreal > QgsSimpleLineSymbolLayer::customDashVector ( ) const

inline

Returns the custom dash vector, which is the pattern of alternating drawn/skipped lengths used while rendering a custom dash pattern.

Units for the vector are specified by customDashPatternUnit()

This setting is only used when useCustomDashPattern() returns true.

See also: setCustomDashVector(); customDashPatternUnit(); useCustomDashPattern()

Definition at line 190 of file qgslinesymbollayer.h.

◆ dashPatternOffset()

double QgsSimpleLineSymbolLayer::dashPatternOffset ( ) const

inline

Returns the dash pattern offset, which dictates how far along the dash pattern the pattern should start rendering at.

Offset units can be retrieved by calling dashPatternOffsetUnit().

See also: setDashPatternOffset(); dashPatternOffsetUnit(); dashPatternOffsetMapUnitScale()

Since: QGIS 3.16

Definition at line 218 of file qgslinesymbollayer.h.

◆ dashPatternOffsetMapUnitScale()

const QgsMapUnitScale & QgsSimpleLineSymbolLayer::dashPatternOffsetMapUnitScale ( ) const

inline

Returns the map unit scale for the dash pattern offset value.

See also: setDashPatternOffsetMapUnitScale(); dashPatternOffsetUnit(); dashPatternOffset()

Since: QGIS 3.16

Definition at line 265 of file qgslinesymbollayer.h.

◆ dashPatternOffsetUnit()

Qgis::RenderUnit QgsSimpleLineSymbolLayer::dashPatternOffsetUnit ( ) const

inline

Returns the units for the dash pattern offset.

See also: setDashPatternOffsetUnit(); dashPatternOffset(); dashPatternOffsetMapUnitScale()

Since: QGIS 3.16

Definition at line 254 of file qgslinesymbollayer.h.

◆ drawInsidePolygon()

bool QgsSimpleLineSymbolLayer::drawInsidePolygon ( ) const

inline

Returns true if the line should only be drawn inside polygons, and any portion of the line which falls outside the polygon should be clipped away.

This setting only has an effect when the line symbol is being used to render polygon rings.

See also: setDrawInsidePolygon()

Definition at line 443 of file qgslinesymbollayer.h.

◆ dxfColor()

QColor QgsSimpleLineSymbolLayer::dxfColor ( QgsSymbolRenderContext & context ) const

overridevirtual

Gets color.

Reimplemented from QgsSymbolLayer.

Definition at line 1115 of file qgslinesymbollayer.cpp.

◆ dxfCustomDashPattern()

QVector< qreal > QgsSimpleLineSymbolLayer::dxfCustomDashPattern ( Qgis::RenderUnit & unit ) const

overridevirtual

Gets dash pattern.

Reimplemented from QgsSymbolLayer.

Definition at line 1087 of file qgslinesymbollayer.cpp.

◆ dxfOffset()

double QgsSimpleLineSymbolLayer::dxfOffset	(	const QgsDxfExport &	e,
		QgsSymbolRenderContext &	context
	)		const

overridevirtual

Gets offset.

Reimplemented from QgsSymbolLayer.

Definition at line 1150 of file qgslinesymbollayer.cpp.

◆ dxfPenStyle()

Qt::PenStyle QgsSimpleLineSymbolLayer::dxfPenStyle ( ) const

overridevirtual

Gets pen style.

Reimplemented from QgsSymbolLayer.

Definition at line 1093 of file qgslinesymbollayer.cpp.

◆ dxfWidth()

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

overridevirtual

Gets line width.

Reimplemented from QgsLineSymbolLayer.

Definition at line 1098 of file qgslinesymbollayer.cpp.

◆ estimateMaxBleed()

double QgsSimpleLineSymbolLayer::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.

Definition at line 1073 of file qgslinesymbollayer.cpp.

◆ layerType()

QString QgsSimpleLineSymbolLayer::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 230 of file qgslinesymbollayer.cpp.

◆ mapUnitScale()

QgsMapUnitScale QgsSimpleLineSymbolLayer::mapUnitScale ( ) const

overridevirtual

Reimplemented from QgsLineSymbolLayer.

Definition at line 89 of file qgslinesymbollayer.cpp.

◆ ogrFeatureStyle()

QString QgsSimpleLineSymbolLayer::ogrFeatureStyle	(	double	mmScaleFactor,
		double	mapUnitScaleFactor
	)		const

overridevirtual

Reimplemented from QgsSymbolLayer.

Definition at line 607 of file qgslinesymbollayer.cpp.

◆ outputUnit()

Qgis::RenderUnit QgsSimpleLineSymbolLayer::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 QgsLineSymbolLayer.

Definition at line 65 of file qgslinesymbollayer.cpp.

◆ penCapStyle()

Qt::PenCapStyle QgsSimpleLineSymbolLayer::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 129 of file qgslinesymbollayer.h.

◆ penJoinStyle()

Qt::PenJoinStyle QgsSimpleLineSymbolLayer::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 115 of file qgslinesymbollayer.h.

◆ penStyle()

Qt::PenStyle QgsSimpleLineSymbolLayer::penStyle ( ) const

inline

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

solid, dashed, etc).

See also: setPenStyle()

Definition at line 101 of file qgslinesymbollayer.h.

◆ properties()

QVariantMap QgsSimpleLineSymbolLayer::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 508 of file qgslinesymbollayer.cpp.

◆ renderPolygonStroke()

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

overridevirtual

Renders the line symbol layer along the outline of polygon, using the given render context.

The exterior ring of the polygon is specified in points. Optionally, interior rings are set via the rings argument.

See also: renderPolyline()

Reimplemented from QgsLineSymbolLayer.

Definition at line 286 of file qgslinesymbollayer.cpp.

◆ renderPolyline()

void QgsSimpleLineSymbolLayer::renderPolyline	(	const QPolygonF &	points,
		QgsSymbolRenderContext &	context
	)

overridevirtual

Renders the line symbol layer along the line joining points, using the given render context.

See also: renderPolygonStroke()

Implements QgsLineSymbolLayer.

Definition at line 374 of file qgslinesymbollayer.cpp.

◆ setAlignDashPattern()

void QgsSimpleLineSymbolLayer::setAlignDashPattern ( bool enabled )

Sets whether dash patterns should be aligned to the start and end of lines, by applying subtle tweaks to the pattern sizing in order to ensure that the end of a line is represented by a complete dash element.

See also: alignDashPattern(); setTweakDashPatternOnCorners()

Since: QGIS 3.16

Definition at line 1135 of file qgslinesymbollayer.cpp.

◆ setCustomDashPatternMapUnitScale()

void QgsSimpleLineSymbolLayer::setCustomDashPatternMapUnitScale ( const QgsMapUnitScale & scale )

inline

Sets the map unit scale for lengths used in the custom dash pattern.

See also: customDashPatternMapUnitScale()

Definition at line 176 of file qgslinesymbollayer.h.

◆ setCustomDashPatternUnit()

void QgsSimpleLineSymbolLayer::setCustomDashPatternUnit ( Qgis::RenderUnit unit )

inline

Sets the unit for lengths used in the custom dash pattern.

See also: customDashPatternUnit()

Definition at line 158 of file qgslinesymbollayer.h.

◆ setCustomDashVector()

void QgsSimpleLineSymbolLayer::setCustomDashVector ( const QVector< qreal > & vector )

inline

Sets the custom dash vector, which is the pattern of alternating drawn/skipped lengths used while rendering a custom dash pattern.

Units for the vector are specified by customDashPatternUnit()

This setting is only used when useCustomDashPattern() returns true.

See also: customDashVector(); setCustomDashPatternUnit(); setUseCustomDashPattern()

Definition at line 204 of file qgslinesymbollayer.h.

◆ setDashPatternOffset()

void QgsSimpleLineSymbolLayer::setDashPatternOffset ( double offset )

inline

Sets the dash pattern offset, which dictates how far along the dash pattern the pattern should start rendering at.

Offset units are set via setDashPatternOffsetUnit().

See also: dashPatternOffset(); setDashPatternOffsetUnit(); setDashPatternOffsetMapUnitScale()

Since: QGIS 3.16

Definition at line 232 of file qgslinesymbollayer.h.

◆ setDashPatternOffsetMapUnitScale()

void QgsSimpleLineSymbolLayer::setDashPatternOffsetMapUnitScale ( const QgsMapUnitScale & scale )

inline

Sets the map unit scale for the dash pattern offset.

See also: dashPatternOffsetMapUnitScale(); setDashPatternOffset(); setDashPatternOffsetUnit()

Since: QGIS 3.16

Definition at line 276 of file qgslinesymbollayer.h.

◆ setDashPatternOffsetUnit()

void QgsSimpleLineSymbolLayer::setDashPatternOffsetUnit ( Qgis::RenderUnit unit )

inline

Sets the unit for the dash pattern offset.

See also: dashPatternOffsetUnit(); setDashPatternOffset(); setDashPatternOffsetMapUnitScale()

Since: QGIS 3.16

Definition at line 243 of file qgslinesymbollayer.h.

◆ setDrawInsidePolygon()

void QgsSimpleLineSymbolLayer::setDrawInsidePolygon ( bool drawInsidePolygon )

inline

Sets whether the line should only be drawn inside polygons, and any portion of the line which falls outside the polygon should be clipped away.

This setting only has an effect when the line symbol is being used to render polygon rings.

See also: drawInsidePolygon()

Definition at line 454 of file qgslinesymbollayer.h.

◆ setMapUnitScale()

void QgsSimpleLineSymbolLayer::setMapUnitScale ( const QgsMapUnitScale & scale )

overridevirtual

Reimplemented from QgsLineSymbolLayer.

Definition at line 81 of file qgslinesymbollayer.cpp.

◆ setOutputUnit()

void QgsSimpleLineSymbolLayer::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 QgsLineSymbolLayer.

Definition at line 54 of file qgslinesymbollayer.cpp.

◆ setPenCapStyle()

void QgsSimpleLineSymbolLayer::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 136 of file qgslinesymbollayer.h.

◆ setPenJoinStyle()

void QgsSimpleLineSymbolLayer::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 122 of file qgslinesymbollayer.h.

◆ setPenStyle()

void QgsSimpleLineSymbolLayer::setPenStyle ( Qt::PenStyle style )

inline

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

solid, dashed, etc).

See also: penStyle()

Definition at line 108 of file qgslinesymbollayer.h.

◆ setTrimDistanceEnd()

void QgsSimpleLineSymbolLayer::setTrimDistanceEnd ( double distance )

inline

Sets the trim distance for the end of the line, which dictates a length from the end of the line at which the actual rendering should end.

Trim units can be set by calling setTrimDistanceEndUnit().

See also: trimDistanceEnd(); setTrimDistanceStart(); setTrimDistanceEndUnit(); setTrimDistanceEndMapUnitScale()

Since: QGIS 3.20

Definition at line 384 of file qgslinesymbollayer.h.

◆ setTrimDistanceEndMapUnitScale()

void QgsSimpleLineSymbolLayer::setTrimDistanceEndMapUnitScale ( const QgsMapUnitScale & scale )

inline

Sets the map unit scale for the trim distance for the end of the line.

See also: trimDistanceEndMapUnitScale(); setTrimDistanceStartMapUnitScale(); setTrimDistanceEnd(); setTrimDistanceEndUnit()

Since: QGIS 3.20

Definition at line 432 of file qgslinesymbollayer.h.

◆ setTrimDistanceEndUnit()

void QgsSimpleLineSymbolLayer::setTrimDistanceEndUnit ( Qgis::RenderUnit unit )

inline

Sets the unit for the trim distance for the end of the line.

See also: trimDistanceEndUnit(); setTrimDistanceStartUnit(); setTrimDistanceEnd(); setTrimDistanceEndMapUnitScale()

Since: QGIS 3.20

Definition at line 396 of file qgslinesymbollayer.h.

◆ setTrimDistanceStart()

void QgsSimpleLineSymbolLayer::setTrimDistanceStart ( double distance )

inline

Sets the trim distance for the start of the line, which dictates a length from the start of the line at which the actual rendering should start.

Trim units can be set by calling setTrimDistanceStartUnit().

See also: trimDistanceStart(); setTrimDistanceEnd(); setTrimDistanceStartUnit(); setTrimDistanceStartMapUnitScale()

Since: QGIS 3.20

Definition at line 306 of file qgslinesymbollayer.h.

◆ setTrimDistanceStartMapUnitScale()

void QgsSimpleLineSymbolLayer::setTrimDistanceStartMapUnitScale ( const QgsMapUnitScale & scale )

inline

Sets the map unit scale for the trim distance for the start of the line.

See also: trimDistanceStartMapUnitScale(); setTrimDistanceEndMapUnitScale(); setTrimDistanceStart(); setTrimDistanceStartUnit()

Since: QGIS 3.20

Definition at line 354 of file qgslinesymbollayer.h.

◆ setTrimDistanceStartUnit()

void QgsSimpleLineSymbolLayer::setTrimDistanceStartUnit ( Qgis::RenderUnit unit )

inline

Sets the unit for the trim distance for the start of the line.

See also: trimDistanceStartUnit(); setTrimDistanceEndUnit(); setTrimDistanceStart(); setTrimDistanceStartMapUnitScale()

Since: QGIS 3.20

Definition at line 318 of file qgslinesymbollayer.h.

◆ setTweakDashPatternOnCorners()

void QgsSimpleLineSymbolLayer::setTweakDashPatternOnCorners ( bool enabled )

Sets whether dash patterns tweaks should be applied on sharp corners, to ensure that a double-length dash is drawn running into and out of the corner.

Note: This setting is only applied if alignDashPattern() is true.

See also: tweakDashPatternOnCorners(); setAlignDashPattern()

Since: QGIS 3.16

Definition at line 1145 of file qgslinesymbollayer.cpp.

◆ setUseCustomDashPattern()

void QgsSimpleLineSymbolLayer::setUseCustomDashPattern ( bool b )

inline

Sets whether the line uses a custom dash pattern.

See also: useCustomDashPattern(); setCustomDashPatternUnit(); setCustomDashVector()

Definition at line 152 of file qgslinesymbollayer.h.

◆ startRender()

void QgsSimpleLineSymbolLayer::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 235 of file qgslinesymbollayer.cpp.

◆ stopRender()

void QgsSimpleLineSymbolLayer::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 281 of file qgslinesymbollayer.cpp.

◆ toSld()

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

overridevirtual

Saves the symbol layer as SLD.

Reimplemented from QgsSymbolLayer.

Definition at line 574 of file qgslinesymbollayer.cpp.

◆ trimDistanceEnd()

double QgsSimpleLineSymbolLayer::trimDistanceEnd ( ) const

inline

Returns the trim distance for the end of the line, which dictates a length from the end of the line at which the actual rendering should end.

Trim units can be retrieved by calling trimDistanceEndUnit().

See also: setTrimDistanceEnd(); trimDistanceStart(); trimDistanceEndUnit(); trimDistanceEndMapUnitScale()

Since: QGIS 3.20

Definition at line 369 of file qgslinesymbollayer.h.

◆ trimDistanceEndMapUnitScale()

const QgsMapUnitScale & QgsSimpleLineSymbolLayer::trimDistanceEndMapUnitScale ( ) const

inline

Returns the map unit scale for the trim distance for the end of the line.

See also: setTrimDistanceEndMapUnitScale(); trimDistanceStartMapUnitScale(); trimDistanceEnd(); trimDistanceEndUnit()

Since: QGIS 3.20

Definition at line 420 of file qgslinesymbollayer.h.

◆ trimDistanceEndUnit()

Qgis::RenderUnit QgsSimpleLineSymbolLayer::trimDistanceEndUnit ( ) const

inline

Returns the unit for the trim distance for the end of the line.

See also: setTrimDistanceEndUnit(); trimDistanceStartUnit(); trimDistanceEnd(); trimDistanceEndMapUnitScale()

Since: QGIS 3.20

Definition at line 408 of file qgslinesymbollayer.h.

◆ trimDistanceStart()

double QgsSimpleLineSymbolLayer::trimDistanceStart ( ) const

inline

Returns the trim distance for the start of the line, which dictates a length from the start of the line at which the actual rendering should start.

Trim units can be retrieved by calling trimDistanceStartUnit().

See also: setTrimDistanceStart(); trimDistanceEnd(); trimDistanceStartUnit(); trimDistanceStartMapUnitScale()

Since: QGIS 3.20

Definition at line 291 of file qgslinesymbollayer.h.

◆ trimDistanceStartMapUnitScale()

const QgsMapUnitScale & QgsSimpleLineSymbolLayer::trimDistanceStartMapUnitScale ( ) const

inline

Returns the map unit scale for the trim distance for the start of the line.

See also: setTrimDistanceStartMapUnitScale(); trimDistanceEndMapUnitScale(); trimDistanceStart(); trimDistanceStartUnit()

Since: QGIS 3.20

Definition at line 342 of file qgslinesymbollayer.h.

◆ trimDistanceStartUnit()

Qgis::RenderUnit QgsSimpleLineSymbolLayer::trimDistanceStartUnit ( ) const

inline

Returns the unit for the trim distance for the start of the line.

See also: setTrimDistanceStartUnit(); trimDistanceEndUnit(); trimDistanceStart(); trimDistanceStartMapUnitScale()

Since: QGIS 3.20

Definition at line 330 of file qgslinesymbollayer.h.

◆ tweakDashPatternOnCorners()

bool QgsSimpleLineSymbolLayer::tweakDashPatternOnCorners ( ) const

Returns true if dash patterns tweaks should be applied on sharp corners, to ensure that a double-length dash is drawn running into and out of the corner.

Note: This setting is only applied if alignDashPattern() is true.

See also: setTweakDashPatternOnCorners(); alignDashPattern()

Since: QGIS 3.16

Definition at line 1140 of file qgslinesymbollayer.cpp.

◆ useCustomDashPattern()

bool QgsSimpleLineSymbolLayer::useCustomDashPattern ( ) const

inline

Returns true if the line uses a custom dash pattern.

See also: setUseCustomDashPattern(); customDashPatternUnit(); customDashVector()

Definition at line 144 of file qgslinesymbollayer.h.

◆ usesMapUnits()

bool QgsSimpleLineSymbolLayer::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 75 of file qgslinesymbollayer.cpp.

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

/build/qgis-3.36.0+99sid/src/core/symbology/qgslinesymbollayer.h
/build/qgis-3.36.0+99sid/src/core/symbology/qgslinesymbollayer.cpp

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsSimpleLineSymbolLayer()

◆ ~QgsSimpleLineSymbolLayer()

Member Function Documentation

◆ alignDashPattern()

◆ canCauseArtifactsBetweenAdjacentTiles()

◆ clone()

◆ create()

◆ createFromSld()

◆ customDashPatternMapUnitScale()

◆ customDashPatternUnit()

◆ customDashVector()

◆ dashPatternOffset()

◆ dashPatternOffsetMapUnitScale()

◆ dashPatternOffsetUnit()

◆ drawInsidePolygon()

◆ dxfColor()

◆ dxfCustomDashPattern()

◆ dxfOffset()

◆ dxfPenStyle()

◆ dxfWidth()

◆ estimateMaxBleed()

◆ layerType()

◆ mapUnitScale()

◆ ogrFeatureStyle()

◆ outputUnit()

◆ penCapStyle()

◆ penJoinStyle()

◆ penStyle()

◆ properties()

◆ renderPolygonStroke()

◆ renderPolyline()

◆ setAlignDashPattern()

◆ setCustomDashPatternMapUnitScale()

◆ setCustomDashPatternUnit()

◆ setCustomDashVector()

◆ setDashPatternOffset()

◆ setDashPatternOffsetMapUnitScale()

◆ setDashPatternOffsetUnit()

◆ setDrawInsidePolygon()

◆ setMapUnitScale()

◆ setOutputUnit()

◆ setPenCapStyle()

◆ setPenJoinStyle()

◆ setPenStyle()

◆ setTrimDistanceEnd()

◆ setTrimDistanceEndMapUnitScale()

◆ setTrimDistanceEndUnit()

◆ setTrimDistanceStart()

◆ setTrimDistanceStartMapUnitScale()

◆ setTrimDistanceStartUnit()

◆ setTweakDashPatternOnCorners()

◆ setUseCustomDashPattern()

◆ startRender()

◆ stopRender()

◆ toSld()

◆ trimDistanceEnd()

◆ trimDistanceEndMapUnitScale()

◆ trimDistanceEndUnit()

◆ trimDistanceStart()

◆ trimDistanceStartMapUnitScale()

◆ trimDistanceStartUnit()

◆ tweakDashPatternOnCorners()

◆ useCustomDashPattern()

◆ usesMapUnits()