#include <qgssymbollayer.h>

Inheritance diagram for QgsLineSymbolLayer:

[legend]

Public Types
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	Property { PropertySize = 0, PropertyAngle, PropertyName, PropertyFillColor, PropertyStrokeColor, PropertyStrokeWidth, PropertyStrokeStyle, PropertyOffset, PropertyCharacter, PropertyWidth, PropertyHeight, PropertyPreserveAspectRatio, PropertyFillStyle, PropertyJoinStyle, PropertySecondaryColor, PropertyLineAngle, PropertyLineDistance, PropertyGradientType, PropertyCoordinateMode, PropertyGradientSpread, PropertyGradientReference1X, PropertyGradientReference1Y, PropertyGradientReference2X, PropertyGradientReference2Y, PropertyGradientReference1IsCentroid, PropertyGradientReference2IsCentroid, PropertyBlurRadius, PropertyShapeburstUseWholeShape, PropertyShapeburstMaxDistance, PropertyShapeburstIgnoreRings, PropertyFile, PropertyDistanceX, PropertyDistanceY, PropertyDisplacementX, PropertyDisplacementY, PropertyOpacity, PropertyCustomDash, PropertyCapStyle, PropertyPlacement, PropertyInterval, PropertyOffsetAlongLine, PropertyHorizontalAnchor, PropertyVerticalAnchor, PropertyLayerEnabled, PropertyArrowWidth, PropertyArrowStartWidth, PropertyArrowHeadLength, PropertyArrowHeadThickness, PropertyArrowHeadType, PropertyArrowType }
	Data definable properties. More...

Public Member Functions
void	drawPreviewIcon (QgsSymbolRenderContext &context, QSize size) override

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

QgsMapUnitScale	mapUnitScale () const override

double	offset () const

const QgsMapUnitScale &	offsetMapUnitScale () const

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

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

virtual void	renderPolygonStroke (const QPolygonF &points, QList< QPolygonF > *rings, QgsSymbolRenderContext &context)

virtual void	renderPolyline (const QPolygonF &points, QgsSymbolRenderContext &context)=0

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. More...

void	setMapUnitScale (const QgsMapUnitScale &scale) override

void	setOffset (double offset)

void	setOffsetMapUnitScale (const QgsMapUnitScale &scale)

void	setOffsetUnit (QgsUnitTypes::RenderUnit unit)
	Sets the units for the line's offset. More...

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

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. More...

virtual void	setWidth (double width)

void	setWidthMapUnitScale (const QgsMapUnitScale &scale)

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

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

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

const QgsMapUnitScale &	widthMapUnitScale () const

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

Public Member Functions inherited from QgsSymbolLayer
virtual	~QgsSymbolLayer ()

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

virtual QColor	color () const
	The fill color. More...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

bool	isLocked () const

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

virtual QString	ogrFeatureStyle (double mmScaleFactor, double mapUnitScaleFactor) const

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

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

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

int	renderingPass () const

virtual void	setColor (const QColor &color)
	The fill color. More...

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

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

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

virtual void	setFillColor (const QColor &color)
	Set fill color. More...

void	setLocked (bool locked)

void	setPaintEffect (QgsPaintEffect *effect)
	Sets the current paint effect for the layer. More...

void	setRenderingPass (int renderingPass)

virtual void	setStrokeColor (const QColor &color)
	Set stroke color. More...

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

virtual void	startRender (QgsSymbolRenderContext &context)=0

virtual void	stopRender (QgsSymbolRenderContext &context)=0

virtual QColor	strokeColor () const
	Gets stroke color. More...

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

virtual void	toSld (QDomDocument &doc, QDomElement &element, const QgsStringMap &props) const

QgsSymbol::SymbolType	type () const

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

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

Protected Member Functions
	QgsLineSymbolLayer (bool locked=false)

Protected Member Functions inherited from QgsSymbolLayer
	QgsSymbolLayer (QgsSymbol::SymbolType type, bool locked=false)

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

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

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

Protected Attributes
double	mOffset = 0

QgsMapUnitScale	mOffsetMapUnitScale

QgsUnitTypes::RenderUnit	mOffsetUnit = QgsUnitTypes::RenderMillimeters

RenderRingFilter	mRingFilter = AllRings

double	mWidth = 0

QgsMapUnitScale	mWidthMapUnitScale

QgsUnitTypes::RenderUnit	mWidthUnit = QgsUnitTypes::RenderMillimeters

Protected Attributes inherited from QgsSymbolLayer
QColor	mColor

QgsPropertyCollection	mDataDefinedProperties

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

QgsFields	mFields

bool	mLocked

QgsPaintEffect *	mPaintEffect = nullptr

int	mRenderingPass

QgsSymbol::SymbolType	mType

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

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

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

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

Detailed Description

Definition at line 773 of file qgssymbollayer.h.

Member Enumeration Documentation

enum QgsLineSymbolLayer::RenderRingFilter

Options for filtering rings when the line symbol layer is being used to render a polygon's rings.

Enumerator
AllRings	Render both exterior and interior rings.
ExteriorRingOnly	Render the exterior ring only.
InteriorRingsOnly	Render the interior rings only.

Definition at line 778 of file qgssymbollayer.h.

Constructor & Destructor Documentation

QgsLineSymbolLayer::QgsLineSymbolLayer ( bool locked = false )

protected

Definition at line 394 of file qgssymbollayer.cpp.

Member Function Documentation

void QgsLineSymbolLayer::drawPreviewIcon	(	QgsSymbolRenderContext &	context,
		QSize	size
	)

overridevirtual

Implements QgsSymbolLayer.

Definition at line 604 of file qgssymbollayer.cpp.

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

overridevirtual

Gets line width.

Reimplemented from QgsSymbolLayer.

Definition at line 659 of file qgssymbollayer.cpp.

QgsMapUnitScale QgsLineSymbolLayer::mapUnitScale ( ) const

overridevirtual

Reimplemented from QgsSymbolLayer.

Definition at line 598 of file qgssymbollayer.cpp.

double QgsLineSymbolLayer::offset ( ) const

inline

Definition at line 814 of file qgssymbollayer.h.

const QgsMapUnitScale& QgsLineSymbolLayer::offsetMapUnitScale ( ) const

inline

Definition at line 847 of file qgssymbollayer.h.

QgsUnitTypes::RenderUnit QgsLineSymbolLayer::offsetUnit ( ) const

inline

Returns the units for the line's offset.

See also: setOffsetUnit()

Definition at line 844 of file qgssymbollayer.h.

QgsUnitTypes::RenderUnit QgsLineSymbolLayer::outputUnit ( ) const

overridevirtual

Returns the units to use for sizes and widths within the symbol layer.

Individual symbol layer subclasses will interpret this in different ways, e.g., a marker symbol layer may use it to specify the units for the marker size, while a line symbol layer may use it to specify the units for the line width.

Returns: output unit, or QgsUnitTypes::RenderUnknownUnit if the symbol layer contains mixed units

See also: setOutputUnit()

Reimplemented from QgsSymbolLayer.

Definition at line 588 of file qgssymbollayer.cpp.

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

virtual

Reimplemented in QgsMarkerLineSymbolLayer, and QgsSimpleLineSymbolLayer.

Definition at line 625 of file qgssymbollayer.cpp.

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

pure virtual

Implemented in QgsMarkerLineSymbolLayer, QgsArrowSymbolLayer, and QgsSimpleLineSymbolLayer.

QgsLineSymbolLayer::RenderRingFilter QgsLineSymbolLayer::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.

This setting has no effect when the line symbol is not being rendered for a polygon.

See also: setRingFilter()

Since: QGIS 3.4.3

Definition at line 399 of file qgssymbollayer.cpp.

void QgsLineSymbolLayer::setMapUnitScale ( const QgsMapUnitScale & scale )

overridevirtual

Reimplemented from QgsSymbolLayer.

Definition at line 593 of file qgssymbollayer.cpp.

void QgsLineSymbolLayer::setOffset ( double offset )

inline

Definition at line 815 of file qgssymbollayer.h.

void QgsLineSymbolLayer::setOffsetMapUnitScale ( const QgsMapUnitScale & scale )

inline

Definition at line 846 of file qgssymbollayer.h.

void QgsLineSymbolLayer::setOffsetUnit ( QgsUnitTypes::RenderUnit unit )

inline

Sets the units for the line's offset.

Parameters

unit	offset units

See also: offsetUnit()

Definition at line 838 of file qgssymbollayer.h.

void QgsLineSymbolLayer::setOutputUnit ( QgsUnitTypes::RenderUnit unit )

overridevirtual

Sets the units to use for sizes and widths within the symbol layer.

Individual symbol layer subclasses will interpret this in different ways, e.g., a marker symbol layer may use it to specify the units for the marker size, while a line symbol layer may use it to specify the units for the line width.

Parameters

unit	output units

See also: outputUnit()

Reimplemented from QgsSymbolLayer.

Definition at line 583 of file qgssymbollayer.cpp.

void QgsLineSymbolLayer::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.

This setting has no effect when the line symbol is not being rendered for a polygon.

See also: ringFilter()

Since: QGIS 3.4.3

Definition at line 404 of file qgssymbollayer.cpp.

virtual void QgsLineSymbolLayer::setWidth ( double width )

inlinevirtual

Reimplemented in QgsMarkerLineSymbolLayer.

Definition at line 789 of file qgssymbollayer.h.

void QgsLineSymbolLayer::setWidthMapUnitScale ( const QgsMapUnitScale & scale )

inline

Definition at line 830 of file qgssymbollayer.h.

void QgsLineSymbolLayer::setWidthUnit ( QgsUnitTypes::RenderUnit unit )

inline

Sets the units for the line's width.

Parameters

unit	width units

See also: widthUnit()

Definition at line 822 of file qgssymbollayer.h.

virtual double QgsLineSymbolLayer::width ( ) const

inlinevirtual

Returns the estimated width for the line symbol layer.

Warning: This returned value is inaccurate if the symbol layer has sub-symbols with different width units. Use the overload accepting a QgsRenderContext argument instead for accurate sizes in this case.

See also: setWidth()

Reimplemented in QgsMarkerLineSymbolLayer.

Definition at line 800 of file qgssymbollayer.h.

double QgsLineSymbolLayer::width ( const QgsRenderContext & context ) const

virtual

Returns the line symbol layer width, in painter units.

This method returns an accurate width by calculating the actual rendered width of the symbol layer using the provided render context.

See also: setWidth()

Since: QGIS 3.4.5

Reimplemented in QgsMarkerLineSymbolLayer.

Definition at line 654 of file qgssymbollayer.cpp.

const QgsMapUnitScale& QgsLineSymbolLayer::widthMapUnitScale ( ) const

inline

Definition at line 831 of file qgssymbollayer.h.

QgsUnitTypes::RenderUnit QgsLineSymbolLayer::widthUnit ( ) const

inline

Returns the units for the line's width.

See also: setWidthUnit()

Definition at line 828 of file qgssymbollayer.h.

Member Data Documentation

double QgsLineSymbolLayer::mOffset = 0

protected

Definition at line 889 of file qgssymbollayer.h.

QgsMapUnitScale QgsLineSymbolLayer::mOffsetMapUnitScale

protected

Definition at line 891 of file qgssymbollayer.h.

QgsUnitTypes::RenderUnit QgsLineSymbolLayer::mOffsetUnit = QgsUnitTypes::RenderMillimeters

protected

Definition at line 890 of file qgssymbollayer.h.

RenderRingFilter QgsLineSymbolLayer::mRingFilter = AllRings

protected

Definition at line 893 of file qgssymbollayer.h.

double QgsLineSymbolLayer::mWidth = 0

protected

Definition at line 886 of file qgssymbollayer.h.

QgsMapUnitScale QgsLineSymbolLayer::mWidthMapUnitScale

protected

Definition at line 888 of file qgssymbollayer.h.

QgsUnitTypes::RenderUnit QgsLineSymbolLayer::mWidthUnit = QgsUnitTypes::RenderMillimeters

protected

Definition at line 887 of file qgssymbollayer.h.

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

/build/qgis-3.4.15+24xenial/src/core/symbology/qgssymbollayer.h
/build/qgis-3.4.15+24xenial/src/core/symbology/qgssymbollayer.cpp

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation