A renderer that automatically displaces points with the same position. More...

#include <qgspointdisplacementrenderer.h>

Inheritance diagram for QgsPointDisplacementRenderer:

Public Types
enum	Placement { Ring, ConcentricRings }
	Placement methods for dispersing points. More...

Public Types inherited from QgsFeatureRendererV2
enum	Capabilities { SymbolLevels = 1, RotationField = 1 << 1, MoreSymbolsPerFeature = 1 << 2, Filter = 1 << 3, ScaleDependent = 1 << 4 }

Public Member Functions
	QgsPointDisplacementRenderer (const QString &labelAttributeName="")

	~QgsPointDisplacementRenderer ()

virtual int	capabilities () override
	Proxy that will call this method on the embedded renderer. More...

QgsMarkerSymbolV2 *	centerSymbol ()
	Returns the symbol for the center of a displacement group (but not ownership of the symbol) More...

virtual void	checkLegendSymbolItem (const QString &key, bool state=true) override
	item in symbology was checked More...

QColor	circleColor () const

double	circleRadiusAddition () const

double	circleWidth () const

QgsPointDisplacementRenderer *	clone () const override

const QgsFeatureRendererV2 *	embeddedRenderer () const override
	Returns the current embedded renderer (subrenderer) for this feature renderer. More...

QString	labelAttributeName () const

QColor	labelColor () const

QFont	labelFont () const

virtual QSet< QString >	legendKeysForFeature (QgsFeature &feature, QgsRenderContext &context) override
	Returns which legend keys match the feature. More...

virtual bool	legendSymbolItemChecked (const QString &key) override
	items of symbology items in legend is checked More...

QgsLegendSymbolList	legendSymbolItems (double scaleDenominator=-1, const QString &rule="") override

virtual bool	legendSymbolItemsCheckable () const override
	items of symbology items in legend should be checkable More...

QgsLegendSymbologyList	legendSymbologyItems (QSize iconSize) override
	return a list of symbology items for the legend More...

double	maxLabelScaleDenominator () const

virtual QgsSymbolV2 *	originalSymbolForFeature (QgsFeature &feat, QgsRenderContext &context) override
	Proxy that will call this method on the embedded renderer. More...

virtual QgsSymbolV2List	originalSymbolsForFeature (QgsFeature &feat, QgsRenderContext &context) override
	Proxy that will call this method on the embedded renderer. More...

Placement	placement () const
	Returns the placement method used for dispersing the points. More...

bool	renderFeature (QgsFeature &feature, QgsRenderContext &context, int layer=-1, bool selected=false, bool drawVertexMarker=false) override
	Reimplemented from QgsFeatureRendererV2. More...

QDomElement	save (QDomDocument &doc) override
	store renderer info to XML element More...

void	setCenterSymbol (QgsMarkerSymbolV2 *symbol)
	Sets the center symbol (takes ownership) More...

void	setCircleColor (const QColor &c)

void	setCircleRadiusAddition (double d)

void	setCircleWidth (double w)

Q_DECL_DEPRECATED void	setDisplacementGroups (const QList< QMap< QgsFeatureId, QgsFeature > > &list)
	not available in python bindings More...

void	setEmbeddedRenderer (QgsFeatureRendererV2 *r) override
	Sets an embedded renderer (subrenderer) for this feature renderer. More...

void	setLabelAttributeName (const QString &name)

void	setLabelColor (const QColor &c)

void	setLabelFont (const QFont &f)

virtual void	setLegendSymbolItem (const QString &key, QgsSymbolV2 *symbol) override
	Sets the symbol to be used for a legend symbol item. More...

void	setMaxLabelScaleDenominator (double d)

void	setPlacement (Placement placement)
	Sets the placement method used for dispersing the points. More...

void	setTolerance (double t)
	Sets the tolerance distance for grouping points. More...

void	setToleranceMapUnitScale (const QgsMapUnitScale &scale)
	Sets the map unit scale object for the distance tolerance. More...

void	setToleranceUnit (QgsSymbolV2::OutputUnit unit)
	Sets the units for the tolerance distance. More...

virtual void	startRender (QgsRenderContext &context, const QgsFields &fields) override
	Needs to be called when a new render cycle is started. More...

void	stopRender (QgsRenderContext &context) override
	Needs to be called when a render cycle has finished to clean up. More...

virtual QgsSymbolV2 *	symbolForFeature (QgsFeature &feature, QgsRenderContext &context) override
	Proxy that will call this method on the embedded renderer. More...

virtual QgsSymbolV2List	symbols (QgsRenderContext &context) override
	Proxy that will call this method on the embedded renderer. More...

virtual QgsSymbolV2List	symbolsForFeature (QgsFeature &feat, QgsRenderContext &context) override
	Proxy that will call this method on the embedded renderer. More...

double	tolerance () const
	Returns the tolerance distance for grouping points. More...

const QgsMapUnitScale &	toleranceMapUnitScale () const
	Returns the map unit scale object for the distance tolerance. More...

QgsSymbolV2::OutputUnit	toleranceUnit () const
	Returns the units for the tolerance distance. More...

virtual void	toSld (QDomDocument &doc, QDomElement &element) const override
	Writes the SLD element following the SLD v1.1 specs. More...

virtual void	toSld (QDomDocument &doc, QDomElement &element, const QgsStringMap &props) const override
	Writes the SLD element following the SLD v1.1 specs. More...

virtual QList< QString >	usedAttributes () override
	Partial proxy that will call this method on the embedded renderer. More...

virtual bool	willRenderFeature (QgsFeature &feat, QgsRenderContext &context) override
	Proxy that will call this method on the embedded renderer. More...

Public Member Functions inherited from QgsFeatureRendererV2
virtual	~QgsFeatureRendererV2 ()

virtual QString	dump () const
	for debugging More...

virtual QString	filter (const QgsFields &fields=QgsFields())
	If a renderer does not require all the features this method may be overridden and return an expression used as where clause. More...

virtual bool	filterNeedsGeometry () const
	Returns true if this renderer requires the geometry to apply the filter. More...

bool	forceRasterRender () const
	Returns whether the renderer must render as a raster. More...

virtual QString	legendClassificationAttribute () const
	If supported by the renderer, return classification attribute for the use in legend. More...

virtual QgsLegendSymbolListV2	legendSymbolItemsV2 () const
	Return a list of symbology items for the legend. More...

virtual void	modifyRequestExtent (QgsRectangle &extent, QgsRenderContext &context)
	Allows for a renderer to modify the extent of a feature request prior to rendering. More...

QgsFeatureRequest::OrderBy	orderBy () const
	Get the order in which features shall be processed by this renderer. More...

bool	orderByEnabled () const
	Returns whether custom ordering will be applied before features are processed by this renderer. More...

virtual Q_DECL_DEPRECATED QgsSymbolV2 *	originalSymbolForFeature (QgsFeature &feature)
	Return symbol for feature. More...

virtual Q_DECL_DEPRECATED QgsSymbolV2List	originalSymbolsForFeature (QgsFeature &feat)
	Equivalent of originalSymbolsForFeature() call extended to support renderers that may use more symbols per feature - similar to symbolsForFeature() More...

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

virtual Q_DECL_DEPRECATED QString	rotationField () const
	return rotation field name (or empty string if not set or not supported by renderer) More...

void	setForceRasterRender (bool forceRaster)
	Sets whether the renderer should be rendered to a raster destination. More...

void	setOrderBy (const QgsFeatureRequest::OrderBy &orderBy)
	Define the order in which features shall be processed by this renderer. More...

void	setOrderByEnabled (bool enabled)
	Sets whether custom ordering should be applied before features are processed by this renderer. More...

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

virtual Q_DECL_DEPRECATED void	setRotationField (const QString &fieldName)
	sets rotation field of renderer (if supported by the renderer) More...

void	setUsingSymbolLevels (bool usingSymbolLevels)

void	setVertexMarkerAppearance (int type, int size)
	set type and size of editing vertex markers for subsequent rendering More...

virtual Q_DECL_DEPRECATED void	startRender (QgsRenderContext &context, const QgsVectorLayer *vlayer)

virtual Q_DECL_DEPRECATED QgsSymbolV2 *	symbolForFeature (QgsFeature &feature)
	To be overridden. More...

virtual Q_DECL_DEPRECATED QgsSymbolV2List	symbols ()
	For symbol levels. More...

virtual Q_DECL_DEPRECATED QgsSymbolV2List	symbolsForFeature (QgsFeature &feat)
	Returns list of symbols used for rendering the feature. More...

QString	type () const

bool	usingSymbolLevels () const

virtual Q_DECL_DEPRECATED bool	willRenderFeature (QgsFeature &feat)
	Returns whether the renderer will render a feature or not. More...

virtual Q_DECL_DEPRECATED QDomElement	writeSld (QDomDocument &doc, const QgsVectorLayer &layer) const
	create the SLD UserStyle element following the SLD v1.1 specs More...

virtual QDomElement	writeSld (QDomDocument &doc, const QString &styleName) const
	create the SLD UserStyle element following the SLD v1.1 specs with the given name More...

virtual QDomElement	writeSld (QDomDocument &doc, const QString &styleName, const QgsStringMap &props) const
	create the SLD UserStyle element following the SLD v1.1 specs with the given name More...

Static Public Member Functions
static QgsPointDisplacementRenderer *	convertFromRenderer (const QgsFeatureRendererV2 *renderer)
	creates a QgsPointDisplacementRenderer from an existing renderer. More...

static QgsFeatureRendererV2 *	create (QDomElement &symbologyElem)
	create a renderer from XML element More...

Static Public Member Functions inherited from QgsFeatureRendererV2
static QgsFeatureRendererV2 *	defaultRenderer (QGis::GeometryType geomType)
	return a new renderer - used by default in vector layers More...

static QgsFeatureRendererV2 *	load (QDomElement &symbologyElem)
	create a renderer from XML element More...

static QgsFeatureRendererV2 *	loadSld (const QDomNode &node, QGis::GeometryType geomType, QString &errorMessage)
	Create a new renderer according to the information contained in the UserStyle element of a SLD style document. More...

Additional Inherited Members
Protected Member Functions inherited from QgsFeatureRendererV2
	QgsFeatureRendererV2 (const QString &type)

Q_DECL_DEPRECATED void	copyPaintEffect (QgsFeatureRendererV2 *destRenderer) const
	Copies paint effect of this renderer to another renderer. More...

void	copyRendererData (QgsFeatureRendererV2 *destRenderer) const
	Clones generic renderer data to another renderer. More...

void	renderFeatureWithSymbol (QgsFeature &feature, QgsSymbolV2 *symbol, QgsRenderContext &context, int layer, bool selected, bool drawVertexMarker)

void	renderVertexMarker (QPointF pt, QgsRenderContext &context)
	render editing vertex marker at specified point More...

void	renderVertexMarkerPolygon (QPolygonF &pts, QList< QPolygonF > *rings, QgsRenderContext &context)
	render editing vertex marker for a polygon More...

void	renderVertexMarkerPolyline (QPolygonF &pts, QgsRenderContext &context)
	render editing vertex marker for a polyline More...

void	setScaleMethodToSymbol (QgsSymbolV2 *symbol, int scaleMethod)

Static Protected Member Functions inherited from QgsFeatureRendererV2
static QgsConstWkbPtr	_getLineString (QPolygonF &pts, QgsRenderContext &context, QgsConstWkbPtr &wkb, bool clipToExtent=true)
	Creates a line string in screen coordinates from a wkb string in map coordinates. More...

static QgsConstWkbPtr	_getPoint (QPointF &pt, QgsRenderContext &context, QgsConstWkbPtr &wkb)
	Creates a point in screen coordinates from a wkb string in map coordinates. More...

static QgsConstWkbPtr	_getPolygon (QPolygonF &pts, QList< QPolygonF > &holes, QgsRenderContext &context, QgsConstWkbPtr &wkb, bool clipToExtent=true)
	Creates a polygon in screen coordinates from a wkb string in map coordinates. More...

static void	convertSymbolRotation (QgsSymbolV2 *symbol, const QString &field)

static void	convertSymbolSizeScale (QgsSymbolV2 *symbol, QgsSymbolV2::ScaleMethod method, const QString &field)

Protected Attributes inherited from QgsFeatureRendererV2
int	mCurrentVertexMarkerSize
	The current size of editing marker. More...

int	mCurrentVertexMarkerType
	The current type of editing marker. More...

bool	mForceRaster

QgsFeatureRequest::OrderBy	mOrderBy

bool	mOrderByEnabled

QgsPaintEffect *	mPaintEffect

QString	mType

bool	mUsingSymbolLevels

Detailed Description

A renderer that automatically displaces points with the same position.

Definition at line 33 of file qgspointdisplacementrenderer.h.

Member Enumeration Documentation

◆ Placement

enum QgsPointDisplacementRenderer::Placement

Placement methods for dispersing points.

Enumerator
Ring	Place points in a single ring around group
ConcentricRings	Place points in concentric rings around group

Definition at line 39 of file qgspointdisplacementrenderer.h.

Constructor & Destructor Documentation

◆ QgsPointDisplacementRenderer()

QgsPointDisplacementRenderer::QgsPointDisplacementRenderer ( const QString & labelAttributeName = "" )

Definition at line 43 of file qgspointdisplacementrenderer.cpp.

◆ ~QgsPointDisplacementRenderer()

QgsPointDisplacementRenderer::~QgsPointDisplacementRenderer ( )

Definition at line 61 of file qgspointdisplacementrenderer.cpp.

Member Function Documentation

◆ capabilities()

int QgsPointDisplacementRenderer::capabilities ( )

overridevirtual

Proxy that will call this method on the embedded renderer.

Reimplemented from QgsFeatureRendererV2.

Definition at line 284 of file qgspointdisplacementrenderer.cpp.

◆ centerSymbol()

QgsMarkerSymbolV2* QgsPointDisplacementRenderer::centerSymbol ( )

inline

Returns the symbol for the center of a displacement group (but not ownership of the symbol)

Definition at line 152 of file qgspointdisplacementrenderer.h.

◆ checkLegendSymbolItem()

void QgsPointDisplacementRenderer::checkLegendSymbolItem	(	const QString &	key,
		bool	state = `true`
	)

overridevirtual

item in symbology was checked

Note: added in 2.5

Reimplemented from QgsFeatureRendererV2.

Definition at line 262 of file qgspointdisplacementrenderer.cpp.

◆ circleColor()

QColor QgsPointDisplacementRenderer::circleColor ( ) const

inline

Definition at line 127 of file qgspointdisplacementrenderer.h.

◆ circleRadiusAddition()

double QgsPointDisplacementRenderer::circleRadiusAddition ( ) const

inline

Definition at line 133 of file qgspointdisplacementrenderer.h.

◆ circleWidth()

double QgsPointDisplacementRenderer::circleWidth ( ) const

inline

Definition at line 124 of file qgspointdisplacementrenderer.h.

◆ clone()

QgsPointDisplacementRenderer * QgsPointDisplacementRenderer::clone ( ) const

overridevirtual

Implements QgsFeatureRendererV2.

Definition at line 67 of file qgspointdisplacementrenderer.cpp.

◆ convertFromRenderer()

QgsPointDisplacementRenderer * QgsPointDisplacementRenderer::convertFromRenderer ( const QgsFeatureRendererV2 * renderer )

static

creates a QgsPointDisplacementRenderer from an existing renderer.

Note: added in 2.5

Returns: a new renderer if the conversion was possible, otherwise 0.

Definition at line 718 of file qgspointdisplacementrenderer.cpp.

◆ create()

QgsFeatureRendererV2 * QgsPointDisplacementRenderer::create ( QDomElement & symbologyElem )

static

create a renderer from XML element

Definition at line 409 of file qgspointdisplacementrenderer.cpp.

◆ embeddedRenderer()

const QgsFeatureRendererV2 * QgsPointDisplacementRenderer::embeddedRenderer ( ) const

overridevirtual

Returns the current embedded renderer (subrenderer) for this feature renderer.

The base class implementation does not use subrenderers and will always return null.

See also: setEmbeddedRenderer()

Note: added in QGIS 2.16

Reimplemented from QgsFeatureRendererV2.

Definition at line 233 of file qgspointdisplacementrenderer.cpp.

◆ labelAttributeName()

QString QgsPointDisplacementRenderer::labelAttributeName ( ) const

inline

Definition at line 105 of file qgspointdisplacementrenderer.h.

◆ labelColor()

QColor QgsPointDisplacementRenderer::labelColor ( ) const

inline

Definition at line 130 of file qgspointdisplacementrenderer.h.

◆ labelFont()

QFont QgsPointDisplacementRenderer::labelFont ( ) const

inline

Definition at line 121 of file qgspointdisplacementrenderer.h.

◆ legendKeysForFeature()

QSet< QString > QgsPointDisplacementRenderer::legendKeysForFeature	(	QgsFeature &	feature,
		QgsRenderContext &	context
	)

overridevirtual

Returns which legend keys match the feature.

Note: added in QGIS 2.18.2

Reimplemented from QgsFeatureRendererV2.

Definition at line 334 of file qgspointdisplacementrenderer.cpp.

◆ legendSymbolItemChecked()

bool QgsPointDisplacementRenderer::legendSymbolItemChecked ( const QString & key )

overridevirtual

items of symbology items in legend is checked

Note: added in 2.5

Reimplemented from QgsFeatureRendererV2.

Definition at line 254 of file qgspointdisplacementrenderer.cpp.

◆ legendSymbolItems()

QgsLegendSymbolList QgsPointDisplacementRenderer::legendSymbolItems	(	double	scaleDenominator = `-1`,
		const QString &	rule = `""`
	)

overridevirtual

Note: not available in python bindings

Reimplemented from QgsFeatureRendererV2.

Definition at line 496 of file qgspointdisplacementrenderer.cpp.

◆ legendSymbolItemsCheckable()

bool QgsPointDisplacementRenderer::legendSymbolItemsCheckable ( ) const

overridevirtual

items of symbology items in legend should be checkable

Note: added in 2.5

Reimplemented from QgsFeatureRendererV2.

Definition at line 246 of file qgspointdisplacementrenderer.cpp.

◆ legendSymbologyItems()

QgsLegendSymbologyList QgsPointDisplacementRenderer::legendSymbologyItems ( QSize iconSize )

overridevirtual

return a list of symbology items for the legend

Reimplemented from QgsFeatureRendererV2.

Definition at line 487 of file qgspointdisplacementrenderer.cpp.

◆ maxLabelScaleDenominator()

double QgsPointDisplacementRenderer::maxLabelScaleDenominator ( ) const

inline

Definition at line 136 of file qgspointdisplacementrenderer.h.

◆ originalSymbolForFeature()

QgsSymbolV2 * QgsPointDisplacementRenderer::originalSymbolForFeature	(	QgsFeature &	feat,
		QgsRenderContext &	context
	)

overridevirtual

Proxy that will call this method on the embedded renderer.

Note: available in python as originalSymbolForFeature2

Reimplemented from QgsFeatureRendererV2.

Definition at line 311 of file qgspointdisplacementrenderer.cpp.

◆ originalSymbolsForFeature()

QgsSymbolV2List QgsPointDisplacementRenderer::originalSymbolsForFeature	(	QgsFeature &	feat,
		QgsRenderContext &	context
	)

overridevirtual

Proxy that will call this method on the embedded renderer.

Note: available in python as originalSymbolsForFeature2

Reimplemented from QgsFeatureRendererV2.

Definition at line 327 of file qgspointdisplacementrenderer.cpp.

◆ placement()

Placement QgsPointDisplacementRenderer::placement ( ) const

inline

Returns the placement method used for dispersing the points.

See also: setPlacement()

Note: added in QGIS 2.12

Definition at line 142 of file qgspointdisplacementrenderer.h.

◆ renderFeature()

bool QgsPointDisplacementRenderer::renderFeature	(	QgsFeature &	feature,
		QgsRenderContext &	context,
		int	layer = `-1`,
		bool	selected = `false`,
		bool	drawVertexMarker = `false`
	)

overridevirtual

Reimplemented from QgsFeatureRendererV2.

Definition at line 101 of file qgspointdisplacementrenderer.cpp.

◆ save()

QDomElement QgsPointDisplacementRenderer::save ( QDomDocument & doc )

overridevirtual

store renderer info to XML element

Reimplemented from QgsFeatureRendererV2.

Definition at line 445 of file qgspointdisplacementrenderer.cpp.

◆ setCenterSymbol()

void QgsPointDisplacementRenderer::setCenterSymbol ( QgsMarkerSymbolV2 * symbol )

Sets the center symbol (takes ownership)

Definition at line 537 of file qgspointdisplacementrenderer.cpp.

◆ setCircleColor()

void QgsPointDisplacementRenderer::setCircleColor ( const QColor & c )

inline

Definition at line 126 of file qgspointdisplacementrenderer.h.

◆ setCircleRadiusAddition()

void QgsPointDisplacementRenderer::setCircleRadiusAddition ( double d )

inline

Definition at line 132 of file qgspointdisplacementrenderer.h.

◆ setCircleWidth()

void QgsPointDisplacementRenderer::setCircleWidth ( double w )

inline

Definition at line 123 of file qgspointdisplacementrenderer.h.

◆ setDisplacementGroups()

Q_DECL_DEPRECATED void QgsPointDisplacementRenderer::setDisplacementGroups ( const QList< QMap< QgsFeatureId, QgsFeature > > & list )

inline

not available in python bindings

Deprecated:: since 2.4

Definition at line 118 of file qgspointdisplacementrenderer.h.

◆ setEmbeddedRenderer()

void QgsPointDisplacementRenderer::setEmbeddedRenderer ( QgsFeatureRendererV2 * subRenderer )

overridevirtual

Sets an embedded renderer (subrenderer) for this feature renderer.

The base class implementation does nothing with subrenderers, but individual derived classes can use these to modify their behaviour.

Parameters

subRenderer the embedded renderer. Ownership will be transferred.

See also: embeddedRenderer()

Note: added in QGIS 2.16

Reimplemented from QgsFeatureRendererV2.

Definition at line 227 of file qgspointdisplacementrenderer.cpp.

◆ setLabelAttributeName()

void QgsPointDisplacementRenderer::setLabelAttributeName ( const QString & name )

inline

Definition at line 104 of file qgspointdisplacementrenderer.h.

◆ setLabelColor()

void QgsPointDisplacementRenderer::setLabelColor ( const QColor & c )

inline

Definition at line 129 of file qgspointdisplacementrenderer.h.

◆ setLabelFont()

void QgsPointDisplacementRenderer::setLabelFont ( const QFont & f )

inline

Definition at line 120 of file qgspointdisplacementrenderer.h.

◆ setLegendSymbolItem()

void QgsPointDisplacementRenderer::setLegendSymbolItem	(	const QString &	key,
		QgsSymbolV2 *	symbol
	)

overridevirtual

Sets the symbol to be used for a legend symbol item.

Parameters

key	rule key for legend symbol
symbol	new symbol for legend item. Ownership is transferred to renderer.

Note: added in QGIS 2.14

Reimplemented from QgsFeatureRendererV2.

Definition at line 238 of file qgspointdisplacementrenderer.cpp.

◆ setMaxLabelScaleDenominator()

void QgsPointDisplacementRenderer::setMaxLabelScaleDenominator ( double d )

inline

Definition at line 135 of file qgspointdisplacementrenderer.h.

◆ setPlacement()

void QgsPointDisplacementRenderer::setPlacement ( Placement placement )

inline

Sets the placement method used for dispersing the points.

Parameters

placement placement method

See also: placement()

Note: added in QGIS 2.12

Definition at line 149 of file qgspointdisplacementrenderer.h.

◆ setTolerance()

void QgsPointDisplacementRenderer::setTolerance ( double t )

inline

Sets the tolerance distance for grouping points.

Units are specified using setToleranceUnit().

Parameters

t	tolerance distance

See also: tolerance(); setToleranceUnit()

Definition at line 162 of file qgspointdisplacementrenderer.h.

◆ setToleranceMapUnitScale()

void QgsPointDisplacementRenderer::setToleranceMapUnitScale ( const QgsMapUnitScale & scale )

inline

Sets the map unit scale object for the distance tolerance.

This is only used if the toleranceUnit() is set to QgsSymbolV2::MapUnit.

Parameters

scale scale for distance tolerance

See also: toleranceMapUnitScale(); setToleranceUnit()

Definition at line 192 of file qgspointdisplacementrenderer.h.

◆ setToleranceUnit()

void QgsPointDisplacementRenderer::setToleranceUnit ( QgsSymbolV2::OutputUnit unit )

inline

Sets the units for the tolerance distance.

Parameters

unit	tolerance distance units

See also: setTolerance(); toleranceUnit()

Note: added in QGIS 2.12

Definition at line 177 of file qgspointdisplacementrenderer.h.

◆ startRender()

void QgsPointDisplacementRenderer::startRender	(	QgsRenderContext &	context,
		const QgsFields &	fields
	)

overridevirtual

Needs to be called when a new render cycle is started.

Parameters

context	Additional information passed to the renderer about the job which will be rendered
fields	The fields available for rendering

Returns: Information passed back from the renderer that can e.g. be used to reduce the amount of requested features

Implements QgsFeatureRendererV2.

Definition at line 351 of file qgspointdisplacementrenderer.cpp.

◆ stopRender()

void QgsPointDisplacementRenderer::stopRender ( QgsRenderContext & context )

overridevirtual

Needs to be called when a render cycle has finished to clean up.

Implements QgsFeatureRendererV2.

Definition at line 385 of file qgspointdisplacementrenderer.cpp.

◆ symbolForFeature()

QgsSymbolV2 * QgsPointDisplacementRenderer::symbolForFeature	(	QgsFeature &	feature,
		QgsRenderContext &	context
	)

overridevirtual

Proxy that will call this method on the embedded renderer.

Note: available in python as symbolForFeature2

Reimplemented from QgsFeatureRendererV2.

Definition at line 302 of file qgspointdisplacementrenderer.cpp.

◆ symbols()

QgsSymbolV2List QgsPointDisplacementRenderer::symbols ( QgsRenderContext & context )

overridevirtual

Proxy that will call this method on the embedded renderer.

Note: available in python as symbols2

Reimplemented from QgsFeatureRendererV2.

Definition at line 293 of file qgspointdisplacementrenderer.cpp.

◆ symbolsForFeature()

QgsSymbolV2List QgsPointDisplacementRenderer::symbolsForFeature	(	QgsFeature &	feat,
		QgsRenderContext &	context
	)

overridevirtual

Proxy that will call this method on the embedded renderer.

Note: available in python as symbolsForFeature2

Reimplemented from QgsFeatureRendererV2.

Definition at line 318 of file qgspointdisplacementrenderer.cpp.

◆ tolerance()

double QgsPointDisplacementRenderer::tolerance ( ) const

inline

Returns the tolerance distance for grouping points.

Units are retrieved using toleranceUnit().

See also: setTolerance(); toleranceUnit()

Definition at line 169 of file qgspointdisplacementrenderer.h.

◆ toleranceMapUnitScale()

const QgsMapUnitScale& QgsPointDisplacementRenderer::toleranceMapUnitScale ( ) const

inline

Returns the map unit scale object for the distance tolerance.

This is only used if the toleranceUnit() is set to QgsSymbolV2::MapUnit.

See also: setToleranceMapUnitScale(); toleranceUnit()

Definition at line 199 of file qgspointdisplacementrenderer.h.

◆ toleranceUnit()

QgsSymbolV2::OutputUnit QgsPointDisplacementRenderer::toleranceUnit ( ) const

inline

Returns the units for the tolerance distance.

See also: tolerance(); setToleranceUnit()

Note: added in QGIS 2.12

Definition at line 184 of file qgspointdisplacementrenderer.h.

◆ toSld() [1/2]

void QgsPointDisplacementRenderer::toSld	(	QDomDocument &	doc,
		QDomElement &	element
	)		const

overridevirtual

Writes the SLD element following the SLD v1.1 specs.

Reimplemented from QgsFeatureRendererV2.

Definition at line 90 of file qgspointdisplacementrenderer.cpp.

◆ toSld() [2/2]

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

overridevirtual

Writes the SLD element following the SLD v1.1 specs.

Reimplemented from QgsFeatureRendererV2.

Definition at line 95 of file qgspointdisplacementrenderer.cpp.

◆ usedAttributes()

QList< QString > QgsPointDisplacementRenderer::usedAttributes ( )

overridevirtual

Partial proxy that will call this method on the embedded renderer.

Implements QgsFeatureRendererV2.

Definition at line 270 of file qgspointdisplacementrenderer.cpp.

◆ willRenderFeature()

bool QgsPointDisplacementRenderer::willRenderFeature	(	QgsFeature &	feat,
		QgsRenderContext &	context
	)

overridevirtual

Proxy that will call this method on the embedded renderer.

Note: available in python as willRenderFeature2

Reimplemented from QgsFeatureRendererV2.

Definition at line 341 of file qgspointdisplacementrenderer.cpp.

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

/tmp/buildd/qgis-2.18.21+99unstable/src/core/symbology-ng/qgspointdisplacementrenderer.h
/tmp/buildd/qgis-2.18.21+99unstable/src/core/symbology-ng/qgspointdisplacementrenderer.cpp

Public Types

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ Placement

Constructor & Destructor Documentation

◆ QgsPointDisplacementRenderer()

◆ ~QgsPointDisplacementRenderer()

Member Function Documentation

◆ capabilities()

◆ centerSymbol()

◆ checkLegendSymbolItem()

◆ circleColor()

◆ circleRadiusAddition()

◆ circleWidth()

◆ clone()

◆ convertFromRenderer()

◆ create()

◆ embeddedRenderer()

◆ labelAttributeName()

◆ labelColor()

◆ labelFont()

◆ legendKeysForFeature()

◆ legendSymbolItemChecked()

◆ legendSymbolItems()

◆ legendSymbolItemsCheckable()

◆ legendSymbologyItems()

◆ maxLabelScaleDenominator()

◆ originalSymbolForFeature()

◆ originalSymbolsForFeature()

◆ placement()

◆ renderFeature()

◆ save()

◆ setCenterSymbol()

◆ setCircleColor()

◆ setCircleRadiusAddition()

◆ setCircleWidth()

◆ setDisplacementGroups()

◆ setEmbeddedRenderer()

◆ setLabelAttributeName()

◆ setLabelColor()

◆ setLabelFont()

◆ setLegendSymbolItem()

◆ setMaxLabelScaleDenominator()

◆ setPlacement()

◆ setTolerance()

◆ setToleranceMapUnitScale()

◆ setToleranceUnit()

◆ startRender()

◆ stopRender()

◆ symbolForFeature()

◆ symbols()

◆ symbolsForFeature()

◆ tolerance()

◆ toleranceMapUnitScale()

◆ toleranceUnit()

◆ toSld() [1/2]

◆ toSld() [2/2]

◆ usedAttributes()

◆ willRenderFeature()