A symbol fill consisting of repeated parallel lines. More...

#include <qgsfillsymbollayer.h>

Inheritance diagram for QgsLinePatternFillSymbolLayer:

[legend]

Public Member Functions
	QgsLinePatternFillSymbolLayer ()

	~QgsLinePatternFillSymbolLayer () override

Qgis::LineClipMode	clipMode () const
	Returns the line clipping mode, which defines how lines are clipped at the edges of shapes.

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

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

double	distance () const
	Returns the distance between lines in the fill pattern.

const QgsMapUnitScale &	distanceMapUnitScale () const
	Returns the map unit scale for the pattern's line distance.

Qgis::RenderUnit	distanceUnit () const
	Returns the units for the distance between lines in the fill pattern.

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.

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

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

double	lineAngle () const
	Returns the angle for the parallel lines used to fill the symbol.

double	lineWidth () const
	Returns the width of the line subsymbol used to render the parallel lines in the fill.

const QgsMapUnitScale &	lineWidthMapUnitScale () const
	Returns the map unit scale for the pattern's line width.

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

QgsMapUnitScale	mapUnitScale () const override

double	offset () const
	Returns the offset distance for lines within the fill, which is the distance to offset the parallel lines from their normal position.

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

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

QString	ogrFeatureStyleWidth (double widthScaleFactor) const

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

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

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.

void	setClipMode (Qgis::LineClipMode mode)
	Sets the line clipping mode, which defines how lines are clipped at the edges of shapes.

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

void	setDistance (double d)
	Sets the distance between lines in the fill pattern.

void	setDistanceMapUnitScale (const QgsMapUnitScale &scale)
	Sets the map unit scale for the pattern's line distance.

void	setDistanceUnit (Qgis::RenderUnit unit)
	Sets the unit for the distance between lines in the fill pattern.

void	setLineAngle (double a)
	Sets the angle for the parallel lines used to fill the symbol.

void	setLineWidth (double w)
	Sets the width of the line subsymbol used to render the parallel lines in the fill.

void	setLineWidthMapUnitScale (const QgsMapUnitScale &scale)
	Sets the map unit scale for the pattern's line width.

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

void	setMapUnitScale (const QgsMapUnitScale &scale) override

void	setOffset (double offset)
	Sets the offset distance for lines within the fill, which is the distance to offset the parallel lines from their normal position.

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

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

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

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

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

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

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

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

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

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

QImage	toTiledPatternImage () const override
	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.

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

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

Public Member Functions inherited from QgsImageFillSymbolLayer
	QgsImageFillSymbolLayer ()

	~QgsImageFillSymbolLayer () override

Qgis::SymbolCoordinateReference	coordinateReference () const
	Returns the coordinate reference mode for fill which controls how the top left corner of the image fill is positioned relative to the feature.

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

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

void	setCoordinateReference (Qgis::SymbolCoordinateReference coordinateReference)
	Sets the coordinate reference mode for fill which controls how the top left corner of the image fill is positioned relative to the feature.

void	setStrokeWidthMapUnitScale (const QgsMapUnitScale &scale)
	Sets the stroke width map unit scale.

void	setStrokeWidthUnit (Qgis::RenderUnit unit)
	Sets the units for the symbol's stroke width.

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

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

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

double	angle () const
	Returns the rotation angle of the fill symbol, in degrees clockwise.

void	drawPreviewIcon (QgsSymbolRenderContext &context, QSize size) override

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

void	setAngle (double angle)
	Sets the rotation angle of the pattern, in degrees clockwise.

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

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.

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 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.

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.

virtual QString	ogrFeatureStyle (double mmScaleFactor, double mapUnitScaleFactor) const

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.

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.

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

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

Qgis::SymbolType	type () const

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 QgsLinePatternFillSymbolLayer from a properties map.

static QgsSymbolLayer *	createFromSld (QDomElement &element)
	Creates a new QgsLinePatternFillSymbolLayer from a SLD element.

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

Protected Member Functions
void	applyDataDefinedSettings (QgsSymbolRenderContext &context) override
	Applies data defined settings prior to generating the fill symbol brush.

Protected Member Functions inherited from QgsImageFillSymbolLayer
virtual bool	applyBrushTransformFromContext (QgsSymbolRenderContext *context=nullptr) const
	Returns `true` if the image brush should be transformed using the render context's texture origin.

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.

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.

Additional Inherited Members
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 Attributes inherited from QgsImageFillSymbolLayer
QBrush	mBrush

Qgis::SymbolCoordinateReference	mCoordinateReference = Qgis::SymbolCoordinateReference::Feature

double	mNextAngle = 0.0

double	mStrokeWidth = 0.0
	Stroke width.

QgsMapUnitScale	mStrokeWidthMapUnitScale

Qgis::RenderUnit	mStrokeWidthUnit = Qgis::RenderUnit::Millimeters

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.

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 symbol fill consisting of repeated parallel lines.

Definition at line 1467 of file qgsfillsymbollayer.h.

Constructor & Destructor Documentation

◆ QgsLinePatternFillSymbolLayer()

QgsLinePatternFillSymbolLayer::QgsLinePatternFillSymbolLayer ( )

Definition at line 2558 of file qgsfillsymbollayer.cpp.

◆ ~QgsLinePatternFillSymbolLayer()

QgsLinePatternFillSymbolLayer::~QgsLinePatternFillSymbolLayer ( )

overridedefault

Member Function Documentation

◆ applyDataDefinedSettings()

void QgsLinePatternFillSymbolLayer::applyDataDefinedSettings ( QgsSymbolRenderContext & context )

overrideprotectedvirtual

Applies data defined settings prior to generating the fill symbol brush.

Reimplemented from QgsImageFillSymbolLayer.

Definition at line 3501 of file qgsfillsymbollayer.cpp.

◆ clipMode()

Qgis::LineClipMode QgsLinePatternFillSymbolLayer::clipMode ( ) const

inline

Returns the line clipping mode, which defines how lines are clipped at the edges of shapes.

See also: setClipMode()

Since: QGIS 3.24

Definition at line 1679 of file qgsfillsymbollayer.h.

◆ clone()

QgsLinePatternFillSymbolLayer * QgsLinePatternFillSymbolLayer::clone ( ) const

overridevirtual

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

Implements QgsSymbolLayer.

Definition at line 3407 of file qgsfillsymbollayer.cpp.

◆ color()

QColor QgsLinePatternFillSymbolLayer::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 2579 of file qgsfillsymbollayer.cpp.

◆ create()

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

static

Creates a new QgsLinePatternFillSymbolLayer from a properties map.

The caller takes ownership of the returned object.

Definition at line 2749 of file qgsfillsymbollayer.cpp.

◆ createFromSld()

QgsSymbolLayer * QgsLinePatternFillSymbolLayer::createFromSld ( QDomElement & element )

static

Creates a new QgsLinePatternFillSymbolLayer from a SLD element.

The caller takes ownership of the returned object.

Definition at line 3524 of file qgsfillsymbollayer.cpp.

◆ distance()

double QgsLinePatternFillSymbolLayer::distance ( ) const

inline

Returns the distance between lines in the fill pattern.

Units are retrieved by distanceUnit().

See also: setDistance(); distanceUnit()

Definition at line 1528 of file qgsfillsymbollayer.h.

◆ distanceMapUnitScale()

const QgsMapUnitScale & QgsLinePatternFillSymbolLayer::distanceMapUnitScale ( ) const

inline

Returns the map unit scale for the pattern's line distance.

See also: setDistanceMapUnitScale(); distance(); distanceUnit()

Definition at line 1607 of file qgsfillsymbollayer.h.

◆ distanceUnit()

Qgis::RenderUnit QgsLinePatternFillSymbolLayer::distanceUnit ( ) const

inline

Returns the units for the distance between lines in the fill pattern.

See also: setDistanceUnit(); distance()

Definition at line 1589 of file qgsfillsymbollayer.h.

◆ estimateMaxBleed()

double QgsLinePatternFillSymbolLayer::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 2697 of file qgsfillsymbollayer.cpp.

◆ hasDataDefinedProperties()

bool QgsLinePatternFillSymbolLayer::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 2613 of file qgsfillsymbollayer.cpp.

◆ layerType()

QString QgsLinePatternFillSymbolLayer::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 2863 of file qgsfillsymbollayer.cpp.

◆ lineAngle()

double QgsLinePatternFillSymbolLayer::lineAngle ( ) const

inline

Returns the angle for the parallel lines used to fill the symbol.

Angles are in degrees, clockwise from North.

See also: setLineAngle()

Definition at line 1513 of file qgsfillsymbollayer.h.

◆ lineWidth()

double QgsLinePatternFillSymbolLayer::lineWidth ( ) const

inline

Returns the width of the line subsymbol used to render the parallel lines in the fill.

See also: setLineWidth()

Definition at line 1544 of file qgsfillsymbollayer.h.

◆ lineWidthMapUnitScale()

const QgsMapUnitScale & QgsLinePatternFillSymbolLayer::lineWidthMapUnitScale ( ) const

inline

Returns the map unit scale for the pattern's line width.

See also: setLineWidthMapUnitScale(); lineWidth(); lineWidthUnit()

Definition at line 1639 of file qgsfillsymbollayer.h.

◆ lineWidthUnit()

Qgis::RenderUnit QgsLinePatternFillSymbolLayer::lineWidthUnit ( ) const

inline

Returns the units for the line's width.

See also: setLineWidthUnit()

Definition at line 1621 of file qgsfillsymbollayer.h.

◆ mapUnitScale()

QgsMapUnitScale QgsLinePatternFillSymbolLayer::mapUnitScale ( ) const

overridevirtual

Reimplemented from QgsImageFillSymbolLayer.

Definition at line 2738 of file qgsfillsymbollayer.cpp.

◆ offset()

double QgsLinePatternFillSymbolLayer::offset ( ) const

inline

Returns the offset distance for lines within the fill, which is the distance to offset the parallel lines from their normal position.

Units are retrieved via offsetUnit().

See also: setOffset(); offsetUnit(); offsetMapUnitScale()

Definition at line 1573 of file qgsfillsymbollayer.h.

◆ offsetMapUnitScale()

const QgsMapUnitScale & QgsLinePatternFillSymbolLayer::offsetMapUnitScale ( ) const

inline

Returns the map unit scale for the pattern's line offset.

See also: setOffsetMapUnitScale(); offset(); offsetUnit()

Definition at line 1671 of file qgsfillsymbollayer.h.

◆ offsetUnit()

Qgis::RenderUnit QgsLinePatternFillSymbolLayer::offsetUnit ( ) const

inline

Returns the units for the line pattern's offset.

See also: setOffsetUnit()

Definition at line 1653 of file qgsfillsymbollayer.h.

◆ ogrFeatureStyleWidth()

QString QgsLinePatternFillSymbolLayer::ogrFeatureStyleWidth ( double widthScaleFactor ) const

Definition at line 3486 of file qgsfillsymbollayer.cpp.

◆ outputUnit()

Qgis::RenderUnit QgsLinePatternFillSymbolLayer::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 QgsImageFillSymbolLayer.

Definition at line 2713 of file qgsfillsymbollayer.cpp.

◆ properties()

QVariantMap QgsLinePatternFillSymbolLayer::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.

Reimplemented from QgsImageFillSymbolLayer.

Definition at line 3387 of file qgsfillsymbollayer.cpp.

◆ renderPolygon()

void QgsLinePatternFillSymbolLayer::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.

Reimplemented from QgsImageFillSymbolLayer.

Definition at line 3193 of file qgsfillsymbollayer.cpp.

◆ setClipMode()

void QgsLinePatternFillSymbolLayer::setClipMode ( Qgis::LineClipMode mode )

inline

Sets the line clipping mode, which defines how lines are clipped at the edges of shapes.

See also: clipMode()

Since: QGIS 3.24

Definition at line 1687 of file qgsfillsymbollayer.h.

◆ setColor()

void QgsLinePatternFillSymbolLayer::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 2573 of file qgsfillsymbollayer.cpp.

◆ setDistance()

void QgsLinePatternFillSymbolLayer::setDistance ( double d )

inline

Sets the distance between lines in the fill pattern.

Parameters

d	distance. Units are specified by setDistanceUnit()

See also: distance(); setDistanceUnit()

Definition at line 1521 of file qgsfillsymbollayer.h.

◆ setDistanceMapUnitScale()

void QgsLinePatternFillSymbolLayer::setDistanceMapUnitScale ( const QgsMapUnitScale & scale )

inline

Sets the map unit scale for the pattern's line distance.

See also: distanceMapUnitScale(); setDistance(); setDistanceUnit()

Definition at line 1598 of file qgsfillsymbollayer.h.

◆ setDistanceUnit()

void QgsLinePatternFillSymbolLayer::setDistanceUnit ( Qgis::RenderUnit unit )

inline

Sets the unit for the distance between lines in the fill pattern.

See also: distanceUnit(); setDistance()

Definition at line 1581 of file qgsfillsymbollayer.h.

◆ setLineAngle()

void QgsLinePatternFillSymbolLayer::setLineAngle ( double a )

inline

Sets the angle for the parallel lines used to fill the symbol.

Angles are in degrees, clockwise from North.

See also: lineAngle()

Definition at line 1504 of file qgsfillsymbollayer.h.

◆ setLineWidth()

void QgsLinePatternFillSymbolLayer::setLineWidth ( double w )

Sets the width of the line subsymbol used to render the parallel lines in the fill.

See also: lineWidth()

Definition at line 2567 of file qgsfillsymbollayer.cpp.

◆ setLineWidthMapUnitScale()

void QgsLinePatternFillSymbolLayer::setLineWidthMapUnitScale ( const QgsMapUnitScale & scale )

inline

Sets the map unit scale for the pattern's line width.

See also: lineWidthMapUnitScale(); setLineWidth(); setLineWidthUnit()

Definition at line 1630 of file qgsfillsymbollayer.h.

◆ setLineWidthUnit()

void QgsLinePatternFillSymbolLayer::setLineWidthUnit ( Qgis::RenderUnit unit )

inline

Sets the unit for the line's width.

See also: lineWidthUnit()

Definition at line 1614 of file qgsfillsymbollayer.h.

◆ setMapUnitScale()

void QgsLinePatternFillSymbolLayer::setMapUnitScale ( const QgsMapUnitScale & scale )

overridevirtual

Reimplemented from QgsImageFillSymbolLayer.

Definition at line 2730 of file qgsfillsymbollayer.cpp.

◆ setOffset()

void QgsLinePatternFillSymbolLayer::setOffset ( double offset )

inline

Sets the offset distance for lines within the fill, which is the distance to offset the parallel lines from their normal position.

Units are specified via setOffsetUnit().

See also: offset(); setOffsetUnit(); setOffsetMapUnitScale()

Definition at line 1560 of file qgsfillsymbollayer.h.

◆ setOffsetMapUnitScale()

void QgsLinePatternFillSymbolLayer::setOffsetMapUnitScale ( const QgsMapUnitScale & scale )

inline

Sets the map unit scale for the pattern's line offset.

See also: offsetMapUnitScale(); setOffset(); setOffsetUnit()

Definition at line 1662 of file qgsfillsymbollayer.h.

◆ setOffsetUnit()

void QgsLinePatternFillSymbolLayer::setOffsetUnit ( Qgis::RenderUnit unit )

inline

Sets the unit for the line pattern's offset.

See also: offsetUnit()

Definition at line 1646 of file qgsfillsymbollayer.h.

◆ setOutputUnit()

void QgsLinePatternFillSymbolLayer::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 QgsImageFillSymbolLayer.

Definition at line 2702 of file qgsfillsymbollayer.cpp.

◆ setSubSymbol()

bool QgsLinePatternFillSymbolLayer::setSubSymbol ( QgsSymbol * symbol )

overridevirtual

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

Reimplemented from QgsSymbolLayer.

Definition at line 2584 of file qgsfillsymbollayer.cpp.

◆ startFeatureRender()

void QgsLinePatternFillSymbolLayer::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 2622 of file qgsfillsymbollayer.cpp.

◆ startRender()

void QgsLinePatternFillSymbolLayer::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 3161 of file qgsfillsymbollayer.cpp.

◆ stopFeatureRender()

void QgsLinePatternFillSymbolLayer::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 2629 of file qgsfillsymbollayer.cpp.

◆ stopRender()

void QgsLinePatternFillSymbolLayer::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 3184 of file qgsfillsymbollayer.cpp.

◆ subSymbol()

QgsSymbol * QgsLinePatternFillSymbolLayer::subSymbol ( )

overridevirtual

Returns the symbol's sub symbol, if present.

Reimplemented from QgsSymbolLayer.

Definition at line 2600 of file qgsfillsymbollayer.cpp.

◆ toSld()

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

overridevirtual

Saves the symbol layer as SLD.

Reimplemented from QgsSymbolLayer.

Definition at line 3419 of file qgsfillsymbollayer.cpp.

◆ toTiledPatternImage()

QImage QgsLinePatternFillSymbolLayer::toTiledPatternImage ( ) const

overridevirtual

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.

The default implementation returns a null image.

Returns: the tile image (not necessarily a square) or a null image if not implemented.

Since: QGIS 3.30

Reimplemented from QgsFillSymbolLayer.

Definition at line 2636 of file qgsfillsymbollayer.cpp.

◆ usedAttributes()

QSet< QString > QgsLinePatternFillSymbolLayer::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 2605 of file qgsfillsymbollayer.cpp.

◆ usesMapUnits()

bool QgsLinePatternFillSymbolLayer::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 2723 of file qgsfillsymbollayer.cpp.

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

/home/fischer/src/qgis-3.38/src/core/symbology/qgsfillsymbollayer.h
/home/fischer/src/qgis-3.38/src/core/symbology/qgsfillsymbollayer.cpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsLinePatternFillSymbolLayer()

◆ ~QgsLinePatternFillSymbolLayer()

Member Function Documentation

◆ applyDataDefinedSettings()

◆ clipMode()

◆ clone()

◆ color()

◆ create()

◆ createFromSld()

◆ distance()

◆ distanceMapUnitScale()

◆ distanceUnit()

◆ estimateMaxBleed()

◆ hasDataDefinedProperties()

◆ layerType()

◆ lineAngle()

◆ lineWidth()

◆ lineWidthMapUnitScale()

◆ lineWidthUnit()

◆ mapUnitScale()

◆ offset()

◆ offsetMapUnitScale()

◆ offsetUnit()

◆ ogrFeatureStyleWidth()

◆ outputUnit()

◆ properties()

◆ renderPolygon()

◆ setClipMode()

◆ setColor()

◆ setDistance()

◆ setDistanceMapUnitScale()

◆ setDistanceUnit()

◆ setLineAngle()

◆ setLineWidth()

◆ setLineWidthMapUnitScale()

◆ setLineWidthUnit()

◆ setMapUnitScale()

◆ setOffset()

◆ setOffsetMapUnitScale()

◆ setOffsetUnit()

◆ setOutputUnit()

◆ setSubSymbol()

◆ startFeatureRender()

◆ startRender()

◆ stopFeatureRender()

◆ stopRender()

◆ subSymbol()

◆ toSld()

◆ toTiledPatternImage()

◆ usedAttributes()

◆ usesMapUnits()