#include <qgscategorizedsymbolrendererv2.h>

Inheritance diagram for QgsCategorizedSymbolRendererV2:

Public Member Functions
	QgsCategorizedSymbolRendererV2 (const QString &attrName=QString(), const QgsCategoryList &categories=QgsCategoryList())

virtual	~QgsCategorizedSymbolRendererV2 ()

void	addCategory (const QgsRendererCategoryV2 &category)

virtual int	capabilities () override
	returns bitwise OR-ed capabilities of the renderer More...

const QgsCategoryList &	categories () const

int	categoryIndexForLabel (const QString &val)
	return index of category with specified label (-1 if not found or not unique) More...

int	categoryIndexForValue (const QVariant &val)
	return index of category with specified value (-1 if not found) More...

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

QString	classAttribute () const

virtual QgsCategorizedSymbolRendererV2 *	clone () const override

void	deleteAllCategories ()

bool	deleteCategory (int catIndex)

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

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

bool	invertedColorRamp ()

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

virtual QSet< QString >	legendKeysForFeature (QgsFeature &feature, QgsRenderContext &context) override
	Return legend keys matching a specified feature. More...

virtual bool	legendSymbolItemChecked (const QString &key) override
	item in symbology was checked More...

virtual QgsLegendSymbolList	legendSymbolItems (double scaleDenominator=-1, const QString &rule=QString()) override
	return a list of item text / symbol More...

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

QgsLegendSymbolListV2	legendSymbolItemsV2 () const override

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

void	moveCategory (int from, int to)
	Moves the category at index position from to index position to. More...

virtual QgsSymbolV2 *	originalSymbolForFeature (QgsFeature &feature, QgsRenderContext &context) override

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

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

QgsSymbolV2::ScaleMethod	scaleMethod () const

void	setClassAttribute (const QString &attr)

void	setInvertedColorRamp (bool inverted)

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

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

void	setScaleMethod (QgsSymbolV2::ScaleMethod scaleMethod)

void	setSizeScaleField (const QString &fieldOrExpression)

void	setSourceColorRamp (QgsVectorColorRampV2 *ramp)
	Sets the source color ramp. More...

void	setSourceSymbol (QgsSymbolV2 *sym)
	Sets the source symbol for the renderer, which is the base symbol used for the each categories' symbol before applying the categories' color. More...

QString	sizeScaleField () const

void	sortByLabel (Qt::SortOrder order=Qt::AscendingOrder)

void	sortByValue (Qt::SortOrder order=Qt::AscendingOrder)

QgsVectorColorRampV2 *	sourceColorRamp ()
	Returns the source color ramp, from which each categories' color is derived. More...

QgsSymbolV2 *	sourceSymbol ()
	Returns the renderer's source symbol, which is the base symbol used for the each categories' symbol before applying the categories' color. More...

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

virtual 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

virtual QgsSymbolV2List	symbols (QgsRenderContext &context) override

virtual void	toSld (QDomDocument &doc, QDomElement &element) const override
	used from subclasses to create SLD Rule elements following SLD v1.1 specs More...

bool	updateCategoryLabel (int catIndex, const QString &label)

bool	updateCategoryRenderState (int catIndex, bool render)

bool	updateCategorySymbol (int catIndex, QgsSymbolV2 *symbol)

bool	updateCategoryValue (int catIndex, const QVariant &value)

void	updateColorRamp (QgsVectorColorRampV2 *ramp, bool inverted=false)
	Update the color ramp used and all symbols colors. More...

void	updateSymbols (QgsSymbolV2 *sym)
	Update all the symbols but leave categories and colors. More...

virtual QList< QString >	usedAttributes () override
	Returns a set of attributes required for this renderer. More...

Public Member Functions inherited from QgsFeatureRendererV2
virtual	~QgsFeatureRendererV2 ()

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

virtual QgsSymbolV2List	originalSymbolsForFeature (QgsFeature &feat, QgsRenderContext &context)
	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 bool	renderFeature (QgsFeature &feature, QgsRenderContext &context, int layer=-1, bool selected=false, bool drawVertexMarker=false)
	Render a feature using this renderer in the given context. 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...

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...

virtual QgsSymbolV2List	symbolsForFeature (QgsFeature &feat, QgsRenderContext &context)
	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 bool	willRenderFeature (QgsFeature &feat, QgsRenderContext &context)
	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...

Static Public Member Functions
static QgsCategorizedSymbolRendererV2 *	convertFromRenderer (const QgsFeatureRendererV2 *renderer)
	creates a QgsCategorizedSymbolRendererV2 from an existing renderer. More...

static QgsFeatureRendererV2 *	create (QDomElement &element)
	create 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...

Protected Member Functions
void	rebuildHash ()

QgsSymbolV2 *	skipRender ()

QgsSymbolV2 *	symbolForValue (const QVariant &value)

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)

Protected Attributes
QString	mAttrName

int	mAttrNum
	attribute index (derived from attribute name in startRender) More...

QgsCategoryList	mCategories

bool	mCounting

QScopedPointer< QgsExpression >	mExpression

bool	mInvertedColorRamp

QScopedPointer< QgsExpression >	mRotation

QgsSymbolV2::ScaleMethod	mScaleMethod

QScopedPointer< QgsExpression >	mSizeScale

QScopedPointer< QgsVectorColorRampV2 >	mSourceColorRamp

QScopedPointer< QgsSymbolV2 >	mSourceSymbol

QHash< QString, QgsSymbolV2 * >	mSymbolHash
	hashtable for faster access to symbols More...

QHash< QgsSymbolV2 , QgsSymbolV2 >	mTempSymbols
	temporary symbols, used for data-defined rotation and scaling More...

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

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

Static Protected Member Functions inherited from QgsFeatureRendererV2
static QgsConstWkbPtr	_getLineString (QPolygonF &pts, QgsRenderContext &context, QgsConstWkbPtr wkb, bool clipToExtent=true)

static QgsConstWkbPtr	_getPoint (QPointF &pt, QgsRenderContext &context, QgsConstWkbPtr wkb)

static QgsConstWkbPtr	_getPolygon (QPolygonF &pts, QList< QPolygonF > &holes, QgsRenderContext &context, QgsConstWkbPtr wkb, bool clipToExtent=true)

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

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

Detailed Description

Definition at line 73 of file qgscategorizedsymbolrendererv2.h.

Constructor & Destructor Documentation

QgsCategorizedSymbolRendererV2::QgsCategorizedSymbolRendererV2	(	const QString &	attrName = `QString()`,
		const QgsCategoryList &	categories = `QgsCategoryList()`
	)

Definition at line 149 of file qgscategorizedsymbolrendererv2.cpp.

QgsCategorizedSymbolRendererV2::~QgsCategorizedSymbolRendererV2 ( )

virtual

Definition at line 170 of file qgscategorizedsymbolrendererv2.cpp.

Member Function Documentation

void QgsCategorizedSymbolRendererV2::addCategory ( const QgsRendererCategoryV2 & category )

Definition at line 343 of file qgscategorizedsymbolrendererv2.cpp.

virtual int QgsCategorizedSymbolRendererV2::capabilities ( )

inlineoverridevirtual

returns bitwise OR-ed capabilities of the renderer

Reimplemented from QgsFeatureRendererV2.

Definition at line 100 of file qgscategorizedsymbolrendererv2.h.

const QgsCategoryList& QgsCategorizedSymbolRendererV2::categories ( ) const

inline

Definition at line 114 of file qgscategorizedsymbolrendererv2.h.

int QgsCategorizedSymbolRendererV2::categoryIndexForLabel ( const QString & val )

return index of category with specified label (-1 if not found or not unique)

Note: added in 2.5

Definition at line 295 of file qgscategorizedsymbolrendererv2.cpp.

int QgsCategorizedSymbolRendererV2::categoryIndexForValue ( const QVariant & val )

return index of category with specified value (-1 if not found)

Definition at line 285 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::checkLegendSymbolItem	(	const QString &	key,
		bool	state = `true`
	)

overridevirtual

item in symbology was checked

Reimplemented from QgsFeatureRendererV2.

Definition at line 1013 of file qgscategorizedsymbolrendererv2.cpp.

QString QgsCategorizedSymbolRendererV2::classAttribute ( ) const

inline

Definition at line 140 of file qgscategorizedsymbolrendererv2.h.

QgsCategorizedSymbolRendererV2 * QgsCategorizedSymbolRendererV2::clone ( ) const

overridevirtual

Implements QgsFeatureRendererV2.

Definition at line 503 of file qgscategorizedsymbolrendererv2.cpp.

QgsCategorizedSymbolRendererV2 * QgsCategorizedSymbolRendererV2::convertFromRenderer ( const QgsFeatureRendererV2 * renderer )

static

creates a QgsCategorizedSymbolRendererV2 from an existing renderer.

Note: added in 2.5

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

Definition at line 1021 of file qgscategorizedsymbolrendererv2.cpp.

QgsFeatureRendererV2 * QgsCategorizedSymbolRendererV2::create ( QDomElement & element )

static

create renderer from XML element

Definition at line 620 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::deleteAllCategories ( )

Definition at line 363 of file qgscategorizedsymbolrendererv2.cpp.

bool QgsCategorizedSymbolRendererV2::deleteCategory ( int catIndex )

Definition at line 354 of file qgscategorizedsymbolrendererv2.cpp.

QString QgsCategorizedSymbolRendererV2::dump ( void ) const

overridevirtual

for debugging

Reimplemented from QgsFeatureRendererV2.

Definition at line 495 of file qgscategorizedsymbolrendererv2.cpp.

QString QgsCategorizedSymbolRendererV2::filter ( const QgsFields & fields = QgsFields() )

overridevirtual

If a renderer does not require all the features this method may be overridden and return an expression used as where clause.

This will be called once after startRender() and before the first call to renderFeature(). By default this returns a null string and all features will be requested. You do not need to specify the extent in here, this is taken care of separately and will be combined with a filter returned from this method.

Returns: An expression used as where clause

Reimplemented from QgsFeatureRendererV2.

Definition at line 537 of file qgscategorizedsymbolrendererv2.cpp.

bool QgsCategorizedSymbolRendererV2::invertedColorRamp ( )

inline

Note: added in 2.1

Definition at line 190 of file qgscategorizedsymbolrendererv2.h.

virtual QString QgsCategorizedSymbolRendererV2::legendClassificationAttribute ( ) const

inlineoverridevirtual

If supported by the renderer, return classification attribute for the use in legend.

Note: added in 2.6

Reimplemented from QgsFeatureRendererV2.

Definition at line 225 of file qgscategorizedsymbolrendererv2.h.

QSet< QString > QgsCategorizedSymbolRendererV2::legendKeysForFeature	(	QgsFeature &	feature,
		QgsRenderContext &	context
	)

overridevirtual

Return legend keys matching a specified feature.

Note: added in 2.14

Reimplemented from QgsFeatureRendererV2.

Definition at line 871 of file qgscategorizedsymbolrendererv2.cpp.

bool QgsCategorizedSymbolRendererV2::legendSymbolItemChecked ( const QString & key )

overridevirtual

item in symbology was checked

Reimplemented from QgsFeatureRendererV2.

Definition at line 993 of file qgscategorizedsymbolrendererv2.cpp.

QgsLegendSymbolList QgsCategorizedSymbolRendererV2::legendSymbolItems	(	double	scaleDenominator = `-1`,
		const QString &	rule = `QString()`
	)

overridevirtual

return a list of item text / symbol

Note: not available in python bindings

Reimplemented from QgsFeatureRendererV2.

Definition at line 806 of file qgscategorizedsymbolrendererv2.cpp.

bool QgsCategorizedSymbolRendererV2::legendSymbolItemsCheckable ( ) const

overridevirtual

items of symbology items in legend should be checkable

Note: added in 2.5

Reimplemented from QgsFeatureRendererV2.

Definition at line 988 of file qgscategorizedsymbolrendererv2.cpp.

QgsLegendSymbolListV2 QgsCategorizedSymbolRendererV2::legendSymbolItemsV2 ( ) const

overridevirtual

Note: added in 2.10

Reimplemented from QgsFeatureRendererV2.

Definition at line 821 of file qgscategorizedsymbolrendererv2.cpp.

QgsLegendSymbologyList QgsCategorizedSymbolRendererV2::legendSymbologyItems ( QSize iconSize )

overridevirtual

return a list of symbology items for the legend

Reimplemented from QgsFeatureRendererV2.

Definition at line 792 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::moveCategory	(	int	from,
		int	to
	)

Moves the category at index position from to index position to.

Definition at line 368 of file qgscategorizedsymbolrendererv2.cpp.

QgsSymbolV2 * QgsCategorizedSymbolRendererV2::originalSymbolForFeature	(	QgsFeature &	feature,
		QgsRenderContext &	context
	)

overridevirtual

Note: available in python as originalSymbolForFeature2

Reimplemented from QgsFeatureRendererV2.

Definition at line 266 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::rebuildHash ( )

protected

Definition at line 174 of file qgscategorizedsymbolrendererv2.cpp.

QString QgsCategorizedSymbolRendererV2::rotationField ( ) const

overridevirtual

return rotation field name (or empty string if not set or not supported by renderer)

Deprecated:: use the symbol's methods instead

Reimplemented from QgsFeatureRendererV2.

Definition at line 943 of file qgscategorizedsymbolrendererv2.cpp.

QDomElement QgsCategorizedSymbolRendererV2::save ( QDomDocument & doc )

overridevirtual

store renderer info to XML element

Reimplemented from QgsFeatureRendererV2.

Definition at line 714 of file qgscategorizedsymbolrendererv2.cpp.

QgsSymbolV2::ScaleMethod QgsCategorizedSymbolRendererV2::scaleMethod ( ) const

inline

Definition at line 207 of file qgscategorizedsymbolrendererv2.h.

void QgsCategorizedSymbolRendererV2::setClassAttribute ( const QString & attr )

inline

Definition at line 141 of file qgscategorizedsymbolrendererv2.h.

void QgsCategorizedSymbolRendererV2::setInvertedColorRamp ( bool inverted )

inline

Definition at line 191 of file qgscategorizedsymbolrendererv2.h.

void QgsCategorizedSymbolRendererV2::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 1003 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::setRotationField ( const QString & fieldName )

overridevirtual

sets rotation field of renderer (if supported by the renderer)

Deprecated:: use the symbol's methods instead

Reimplemented from QgsFeatureRendererV2.

Definition at line 934 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::setScaleMethod ( QgsSymbolV2::ScaleMethod scaleMethod )

Definition at line 978 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::setSizeScaleField ( const QString & fieldOrExpression )

Definition at line 955 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::setSourceColorRamp ( QgsVectorColorRampV2 * ramp )

Sets the source color ramp.

Parameters

ramp	color ramp. Ownership is transferred to the renderer

See also: sourceColorRamp(); setSourceSymbol()

Definition at line 905 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::setSourceSymbol ( QgsSymbolV2 * sym )

Sets the source symbol for the renderer, which is the base symbol used for the each categories' symbol before applying the categories' color.

Parameters

sym	source symbol, ownership is transferred to the renderer

See also: sourceSymbol(); setSourceColorRamp()

Definition at line 895 of file qgscategorizedsymbolrendererv2.cpp.

QString QgsCategorizedSymbolRendererV2::sizeScaleField ( ) const

Definition at line 960 of file qgscategorizedsymbolrendererv2.cpp.

QgsSymbolV2 * QgsCategorizedSymbolRendererV2::skipRender ( )

protected

Definition at line 185 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::sortByLabel ( Qt::SortOrder order = Qt::AscendingOrder )

Definition at line 405 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::sortByValue ( Qt::SortOrder order = Qt::AscendingOrder )

Definition at line 383 of file qgscategorizedsymbolrendererv2.cpp.

QgsVectorColorRampV2 * QgsCategorizedSymbolRendererV2::sourceColorRamp ( )

Returns the source color ramp, from which each categories' color is derived.

See also: setSourceColorRamp(); sourceSymbol()

Definition at line 900 of file qgscategorizedsymbolrendererv2.cpp.

QgsSymbolV2 * QgsCategorizedSymbolRendererV2::sourceSymbol ( )

Returns the renderer's source symbol, which is the base symbol used for the each categories' symbol before applying the categories' color.

See also: setSourceSymbol(); sourceColorRamp()

Definition at line 891 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::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 417 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::stopRender ( QgsRenderContext & context )

overridevirtual

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

Implements QgsFeatureRendererV2.

Definition at line 448 of file qgscategorizedsymbolrendererv2.cpp.

QgsSymbolV2 * QgsCategorizedSymbolRendererV2::symbolForFeature	(	QgsFeature &	feature,
		QgsRenderContext &	context
	)

overridevirtual

Note: available in python as symbolForFeature2

Reimplemented from QgsFeatureRendererV2.

Definition at line 214 of file qgscategorizedsymbolrendererv2.cpp.

QgsSymbolV2 * QgsCategorizedSymbolRendererV2::symbolForValue ( const QVariant & value )

protected

Definition at line 194 of file qgscategorizedsymbolrendererv2.cpp.

QgsSymbolV2List QgsCategorizedSymbolRendererV2::symbols ( QgsRenderContext & context )

overridevirtual

Note: available in python as symbols2

Reimplemented from QgsFeatureRendererV2.

Definition at line 608 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::toSld	(	QDomDocument &	doc,
		QDomElement &	element
	)		const

overridevirtual

used from subclasses to create SLD Rule elements following SLD v1.1 specs

Reimplemented from QgsFeatureRendererV2.

Definition at line 520 of file qgscategorizedsymbolrendererv2.cpp.

bool QgsCategorizedSymbolRendererV2::updateCategoryLabel	(	int	catIndex,
		const QString &	label
	)

Definition at line 327 of file qgscategorizedsymbolrendererv2.cpp.

bool QgsCategorizedSymbolRendererV2::updateCategoryRenderState	(	int	catIndex,
		bool	render
	)

Note: added in 2.5

Definition at line 335 of file qgscategorizedsymbolrendererv2.cpp.

bool QgsCategorizedSymbolRendererV2::updateCategorySymbol	(	int	catIndex,
		QgsSymbolV2 *	symbol
	)

Definition at line 319 of file qgscategorizedsymbolrendererv2.cpp.

bool QgsCategorizedSymbolRendererV2::updateCategoryValue	(	int	catIndex,
		const QVariant &	value
	)

Definition at line 311 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::updateColorRamp	(	QgsVectorColorRampV2 *	ramp,
		bool	inverted = `false`
	)

Update the color ramp used and all symbols colors.

Parameters

ramp	color ramp. Ownership is transferred to the renderer
inverted	set to true to invert ramp colors

Note: added in 2.5

Definition at line 910 of file qgscategorizedsymbolrendererv2.cpp.

void QgsCategorizedSymbolRendererV2::updateSymbols ( QgsSymbolV2 * sym )

Update all the symbols but leave categories and colors.

This method also sets the source symbol for the renderer.

Parameters

sym	source symbol to use for categories. Ownership is not transferred.

See also: setSourceSymbol()

Definition at line 965 of file qgscategorizedsymbolrendererv2.cpp.

QList< QString > QgsCategorizedSymbolRendererV2::usedAttributes ( )

overridevirtual

Returns a set of attributes required for this renderer.

TODO QGIS3: Change QList to QSet

Implements QgsFeatureRendererV2.

Definition at line 466 of file qgscategorizedsymbolrendererv2.cpp.

Member Data Documentation

QString QgsCategorizedSymbolRendererV2::mAttrName

protected

Definition at line 233 of file qgscategorizedsymbolrendererv2.h.

int QgsCategorizedSymbolRendererV2::mAttrNum

protected

attribute index (derived from attribute name in startRender)

Definition at line 244 of file qgscategorizedsymbolrendererv2.h.

QgsCategoryList QgsCategorizedSymbolRendererV2::mCategories

protected

Definition at line 234 of file qgscategorizedsymbolrendererv2.h.

bool QgsCategorizedSymbolRendererV2::mCounting

protected

Definition at line 248 of file qgscategorizedsymbolrendererv2.h.

QScopedPointer<QgsExpression> QgsCategorizedSymbolRendererV2::mExpression

protected

Definition at line 241 of file qgscategorizedsymbolrendererv2.h.

bool QgsCategorizedSymbolRendererV2::mInvertedColorRamp

protected

Definition at line 237 of file qgscategorizedsymbolrendererv2.h.

QScopedPointer<QgsExpression> QgsCategorizedSymbolRendererV2::mRotation

protected

Definition at line 238 of file qgscategorizedsymbolrendererv2.h.

QgsSymbolV2::ScaleMethod QgsCategorizedSymbolRendererV2::mScaleMethod

protected

Definition at line 240 of file qgscategorizedsymbolrendererv2.h.

QScopedPointer<QgsExpression> QgsCategorizedSymbolRendererV2::mSizeScale

protected

Definition at line 239 of file qgscategorizedsymbolrendererv2.h.

QScopedPointer<QgsVectorColorRampV2> QgsCategorizedSymbolRendererV2::mSourceColorRamp

protected

Definition at line 236 of file qgscategorizedsymbolrendererv2.h.

QScopedPointer<QgsSymbolV2> QgsCategorizedSymbolRendererV2::mSourceSymbol

protected

Definition at line 235 of file qgscategorizedsymbolrendererv2.h.

QHash<QString, QgsSymbolV2*> QgsCategorizedSymbolRendererV2::mSymbolHash

protected

hashtable for faster access to symbols

Definition at line 247 of file qgscategorizedsymbolrendererv2.h.

QHash<QgsSymbolV2*, QgsSymbolV2*> QgsCategorizedSymbolRendererV2::mTempSymbols

protected

temporary symbols, used for data-defined rotation and scaling

Definition at line 251 of file qgscategorizedsymbolrendererv2.h.

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

/tmp/buildd/qgis-2.14.0+99unstable/src/core/symbology-ng/qgscategorizedsymbolrendererv2.h
/tmp/buildd/qgis-2.14.0+99unstable/src/core/symbology-ng/qgscategorizedsymbolrendererv2.cpp

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