#include <qgspallabeling.h>

Inheritance diagram for QgsPalLabeling:

Public Types
enum	DrawLabelType { LabelText = 0, LabelBuffer, LabelShape, LabelSVG, LabelShadow }
enum	Search { Chain, Popmusic_Tabu, Popmusic_Chain, Popmusic_Tabu_Chain, Falp }

Public Member Functions
	QgsPalLabeling ()
	~QgsPalLabeling ()
virtual int	addDiagramLayer (QgsVectorLayer layer, const QgsDiagramLayerSettings s) override
	adds a diagram layer to the labeling engine
const QList< QgsLabelCandidate > &	candidates ()
virtual void	clearActiveLayer (const QString &layerID) override
	clears data defined objects from PAL layer settings for a registered layer
virtual void	clearActiveLayers () override
	clears all PAL layer settings for registered layers
void	clearEngineSettings ()
virtual QgsLabelingEngineInterface *	clone () override
	called when passing engine among map renderers
virtual void	drawLabel (pal::LabelPosition *label, QgsRenderContext &context, QgsPalLayerSettings &tmpLyr, DrawLabelType drawType, double dpiRatio=1.0)
	drawLabel
void	drawLabelCandidateRect (pal::LabelPosition lp, QPainter painter, const QgsMapToPixel *xform)
virtual void	drawLabeling (QgsRenderContext &context) override
	called when the map is drawn and labels should be placed
virtual void	exit () override
	called when we're done with rendering
virtual Q_DECL_DEPRECATED void	init (QgsMapRenderer *mr) override
	called when we're going to start with rendering
virtual void	init (const QgsMapSettings &mapSettings) override
	called when we're going to start with rendering
bool	isDrawingOutlineLabels () const
bool	isShowingAllLabels () const
bool	isShowingCandidates () const
bool	isShowingPartialsLabels () const
bool	isShowingShadowRectangles () const
Q_DECL_DEPRECATED bool	isStoredWithProject () const
virtual Q_DECL_DEPRECATED QList< QgsLabelPosition >	labelsAtPosition (const QgsPoint &p) override
	return infos about labels at a given (map) position
virtual Q_DECL_DEPRECATED QList< QgsLabelPosition >	labelsWithinRect (const QgsRectangle &r) override
	return infos about labels within a given (map) rectangle
QgsPalLayerSettings &	layer (const QString &layerName) override
	returns PAL layer settings for a registered layer
void	loadEngineSettings ()
	load/save engine settings to project file
void	numCandidatePositions (int &candPoint, int &candLine, int &candPolygon)
virtual int	prepareLayer (QgsVectorLayer *layer, QStringList &attrNames, QgsRenderContext &ctx) override
	hook called when drawing layer before issuing select()
virtual void	registerDiagramFeature (const QString &layerID, QgsFeature &feat, const QgsRenderContext &context=QgsRenderContext()) override
	called for every diagram feature
virtual void	registerFeature (const QString &layerID, QgsFeature &feat, const QgsRenderContext &context=QgsRenderContext(), QString dxfLayer=QString::null) override
	hook called when drawing for every feature in a layer
void	saveEngineSettings ()
Search	searchMethod () const
void	setDrawingOutlineLabels (bool outline)
void	setNumCandidatePositions (int candPoint, int candLine, int candPolygon)
void	setSearchMethod (Search s)
void	setShowingAllLabels (bool showing)
void	setShowingCandidates (bool showing)
void	setShowingPartialsLabels (bool showing)
void	setShowingShadowRectangles (bool showing)
Q_DECL_DEPRECATED void	setStoredWithProject (bool store)
QgsLabelingResults *	takeResults ()
	Return pointer to recently computed results (in drawLabeling()) and pass the ownership of results to the caller.
virtual bool	willUseLayer (QgsVectorLayer *layer) override
	called to find out whether the layer is used for labeling
Public Member Functions inherited from QgsLabelingEngineInterface
virtual	~QgsLabelingEngineInterface ()

Static Public Member Functions
static void	drawLabelBackground (QgsRenderContext &context, QgsLabelComponent component, const QgsPalLayerSettings &tmpLyr)
static void	drawLabelBuffer (QgsRenderContext &context, const QgsLabelComponent &component, const QgsPalLayerSettings &tmpLyr)
static void	drawLabelShadow (QgsRenderContext &context, const QgsLabelComponent &component, const QgsPalLayerSettings &tmpLyr)
static bool	staticWillUseLayer (QgsVectorLayer *layer)
	called to find out whether the layer is used for labeling
static bool	staticWillUseLayer (const QString &layerID)

Protected Member Functions
void	dataDefinedDropShadow (QgsPalLayerSettings &tmpLyr, const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant > &ddValues)
void	dataDefinedShapeBackground (QgsPalLayerSettings &tmpLyr, const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant > &ddValues)
void	dataDefinedTextBuffer (QgsPalLayerSettings &tmpLyr, const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant > &ddValues)
void	dataDefinedTextFormatting (QgsPalLayerSettings &tmpLyr, const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant > &ddValues)
void	dataDefinedTextStyle (QgsPalLayerSettings &tmpLyr, const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant > &ddValues)
void	deleteTemporaryData ()

Protected Attributes
QHash< QString, QgsDiagramLayerSettings >	mActiveDiagramLayers
QHash< QString, QgsPalLayerSettings >	mActiveLayers
QList< QgsLabelCandidate >	mCandidates
int	mCandLine
int	mCandPoint
int	mCandPolygon
bool	mDrawOutlineLabels
QgsPalLayerSettings	mInvalidLayerSettings
const QgsMapSettings *	mMapSettings
pal::Pal *	mPal
QgsLabelingResults *	mResults
Search	mSearch
bool	mShowingAllLabels
bool	mShowingCandidates
bool	mShowingPartialsLabels
bool	mShowingShadowRects

Detailed Description

Definition at line 704 of file qgspallabeling.h.

Member Enumeration Documentation

enum QgsPalLabeling::DrawLabelType

Enumerator:

LabelText
LabelBuffer
LabelShape
LabelSVG
LabelShadow

Definition at line 707 of file qgspallabeling.h.

enum QgsPalLabeling::Search

Enumerator:

Chain
Popmusic_Tabu
Popmusic_Chain
Popmusic_Tabu_Chain
Falp

Definition at line 724 of file qgspallabeling.h.

Constructor & Destructor Documentation

QgsPalLabeling::QgsPalLabeling ( )

Definition at line 3094 of file qgspallabeling.cpp.

QgsPalLabeling::~QgsPalLabeling ( )

Definition at line 3121 of file qgspallabeling.cpp.

Member Function Documentation

int QgsPalLabeling::addDiagramLayer	(	QgsVectorLayer *	layer,
		const QgsDiagramLayerSettings *	s
	)

overridevirtual

adds a diagram layer to the labeling engine

Reimplemented from QgsLabelingEngineInterface.

Definition at line 3383 of file qgspallabeling.cpp.

const QList<QgsLabelCandidate>& QgsPalLabeling::candidates ( )

inline

Definition at line 731 of file qgspallabeling.h.

void QgsPalLabeling::clearActiveLayer ( const QString & layerID )

overridevirtual

clears data defined objects from PAL layer settings for a registered layer

Implements QgsLabelingEngineInterface.

Definition at line 3167 of file qgspallabeling.cpp.

void QgsPalLabeling::clearActiveLayers ( )

overridevirtual

clears all PAL layer settings for registered layers

Implements QgsLabelingEngineInterface.

Definition at line 3157 of file qgspallabeling.cpp.

void QgsPalLabeling::clearEngineSettings ( )

Definition at line 5047 of file qgspallabeling.cpp.

QgsLabelingEngineInterface * QgsPalLabeling::clone ( )

overridevirtual

called when passing engine among map renderers

Implements QgsLabelingEngineInterface.

Definition at line 5060 of file qgspallabeling.cpp.

void QgsPalLabeling::dataDefinedDropShadow	(	QgsPalLayerSettings &	tmpLyr,
		const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant > &	ddValues
	)

protected

Definition at line 3845 of file qgspallabeling.cpp.

void QgsPalLabeling::dataDefinedShapeBackground	(	QgsPalLayerSettings &	tmpLyr,
		const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant > &	ddValues
	)

protected

Definition at line 3734 of file qgspallabeling.cpp.

void QgsPalLabeling::dataDefinedTextBuffer	(	QgsPalLayerSettings &	tmpLyr,
		const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant > &	ddValues
	)

protected

Definition at line 3677 of file qgspallabeling.cpp.

void QgsPalLabeling::dataDefinedTextFormatting	(	QgsPalLayerSettings &	tmpLyr,
		const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant > &	ddValues
	)

protected

Definition at line 3624 of file qgspallabeling.cpp.

void QgsPalLabeling::dataDefinedTextStyle	(	QgsPalLayerSettings &	tmpLyr,
		const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant > &	ddValues
	)

protected

Definition at line 3599 of file qgspallabeling.cpp.

void QgsPalLabeling::deleteTemporaryData ( )

protected

Definition at line 4127 of file qgspallabeling.cpp.

void QgsPalLabeling::drawLabel	(	pal::LabelPosition *	label,
		QgsRenderContext &	context,
		QgsPalLayerSettings &	tmpLyr,
		DrawLabelType	drawType,
		double	dpiRatio = `1.0`
	)

virtual

drawLabel

Note: not available in python bindings

Reimplemented in QgsDxfPalLabeling.

Definition at line 4255 of file qgspallabeling.cpp.

void QgsPalLabeling::drawLabelBackground	(	QgsRenderContext &	context,
		QgsLabelComponent	component,
		const QgsPalLayerSettings &	tmpLyr
	)

static

Definition at line 4564 of file qgspallabeling.cpp.

void QgsPalLabeling::drawLabelBuffer	(	QgsRenderContext &	context,
		const QgsLabelComponent &	component,
		const QgsPalLayerSettings &	tmpLyr
	)

static

Definition at line 4509 of file qgspallabeling.cpp.

void QgsPalLabeling::drawLabelCandidateRect	(	pal::LabelPosition *	lp,
		QPainter *	painter,
		const QgsMapToPixel *	xform
	)

Note: not available in python bindings

Definition at line 4205 of file qgspallabeling.cpp.

void QgsPalLabeling::drawLabeling ( QgsRenderContext & context )

overridevirtual

called when the map is drawn and labels should be placed

Implements QgsLabelingEngineInterface.

Definition at line 3918 of file qgspallabeling.cpp.

void QgsPalLabeling::drawLabelShadow	(	QgsRenderContext &	context,
		const QgsLabelComponent &	component,
		const QgsPalLayerSettings &	tmpLyr
	)

static

Definition at line 4861 of file qgspallabeling.cpp.

void QgsPalLabeling::exit ( )

overridevirtual

called when we're done with rendering

Implements QgsLabelingEngineInterface.

Definition at line 3579 of file qgspallabeling.cpp.

void QgsPalLabeling::init ( QgsMapRenderer * mr )

overridevirtual

called when we're going to start with rendering

Deprecated:: since 2.4 - use override with QgsMapSettings

Implements QgsLabelingEngineInterface.

Definition at line 3541 of file qgspallabeling.cpp.

void QgsPalLabeling::init ( const QgsMapSettings & mapSettings )

overridevirtual

called when we're going to start with rendering

Implements QgsLabelingEngineInterface.

Definition at line 3546 of file qgspallabeling.cpp.

bool QgsPalLabeling::isDrawingOutlineLabels ( ) const

inline

Note: added in 2.4

Definition at line 743 of file qgspallabeling.h.

bool QgsPalLabeling::isShowingAllLabels ( ) const

inline

Definition at line 736 of file qgspallabeling.h.

bool QgsPalLabeling::isShowingCandidates ( ) const

inline

Definition at line 729 of file qgspallabeling.h.

bool QgsPalLabeling::isShowingPartialsLabels ( ) const

inline

Definition at line 739 of file qgspallabeling.h.

bool QgsPalLabeling::isShowingShadowRectangles ( ) const

inline

Definition at line 733 of file qgspallabeling.h.

Q_DECL_DEPRECATED bool QgsPalLabeling::isStoredWithProject ( ) const

inline

Deprecated:: since 2.4 - settings are always stored in project

Definition at line 814 of file qgspallabeling.h.

QList< QgsLabelPosition > QgsPalLabeling::labelsAtPosition ( const QgsPoint & p )

overridevirtual

return infos about labels at a given (map) position

Deprecated:: since 2.4 - use takeResults() and methods of QgsLabelingResults

Implements QgsLabelingEngineInterface.

Definition at line 4159 of file qgspallabeling.cpp.

QList< QgsLabelPosition > QgsPalLabeling::labelsWithinRect ( const QgsRectangle & r )

overridevirtual

return infos about labels within a given (map) rectangle

Deprecated:: since 2.4 - use takeResults() and methods of QgsLabelingResults

Implements QgsLabelingEngineInterface.

Definition at line 4164 of file qgspallabeling.cpp.

QgsPalLayerSettings & QgsPalLabeling::layer ( const QString & layerName )

overridevirtual

returns PAL layer settings for a registered layer

Implements QgsLabelingEngineInterface.

Definition at line 3586 of file qgspallabeling.cpp.

void QgsPalLabeling::loadEngineSettings ( )

load/save engine settings to project file

Definition at line 5009 of file qgspallabeling.cpp.

void QgsPalLabeling::numCandidatePositions	(	int &	candPoint,
		int &	candLine,
		int &	candPolygon
	)

Definition at line 4181 of file qgspallabeling.cpp.

int QgsPalLabeling::prepareLayer	(	QgsVectorLayer *	layer,
		QStringList &	attrNames,
		QgsRenderContext &	ctx
	)

overridevirtual

hook called when drawing layer before issuing select()

Implements QgsLabelingEngineInterface.

Definition at line 3181 of file qgspallabeling.cpp.

void QgsPalLabeling::registerDiagramFeature	(	const QString &	layerID,
		QgsFeature &	feat,
		const QgsRenderContext &	context = `QgsRenderContext()`
	)

overridevirtual

called for every diagram feature

Reimplemented from QgsLabelingEngineInterface.

Definition at line 3413 of file qgspallabeling.cpp.

void QgsPalLabeling::registerFeature	(	const QString &	layerID,
		QgsFeature &	feat,
		const QgsRenderContext &	context = `QgsRenderContext()`,
		QString	dxfLayer = `QString::null`
	)

overridevirtual

hook called when drawing for every feature in a layer

Implements QgsLabelingEngineInterface.

Definition at line 3407 of file qgspallabeling.cpp.

void QgsPalLabeling::saveEngineSettings ( )

Definition at line 5034 of file qgspallabeling.cpp.

QgsPalLabeling::Search QgsPalLabeling::searchMethod ( ) const

Definition at line 4200 of file qgspallabeling.cpp.

void QgsPalLabeling::setDrawingOutlineLabels ( bool outline )

inline

Definition at line 744 of file qgspallabeling.h.

void QgsPalLabeling::setNumCandidatePositions	(	int	candPoint,
		int	candLine,
		int	candPolygon
	)

Definition at line 4188 of file qgspallabeling.cpp.

void QgsPalLabeling::setSearchMethod ( QgsPalLabeling::Search s )

Definition at line 4195 of file qgspallabeling.cpp.

void QgsPalLabeling::setShowingAllLabels ( bool showing )

inline

Definition at line 737 of file qgspallabeling.h.

void QgsPalLabeling::setShowingCandidates ( bool showing )

inline

Definition at line 730 of file qgspallabeling.h.

void QgsPalLabeling::setShowingPartialsLabels ( bool showing )

inline

Definition at line 740 of file qgspallabeling.h.

void QgsPalLabeling::setShowingShadowRectangles ( bool showing )

inline

Definition at line 734 of file qgspallabeling.h.

Q_DECL_DEPRECATED void QgsPalLabeling::setStoredWithProject ( bool store )

inline

Deprecated:: since 2.4 - settings are always stored in project

Definition at line 816 of file qgspallabeling.h.

bool QgsPalLabeling::staticWillUseLayer ( QgsVectorLayer * layer )

static

called to find out whether the layer is used for labeling

Note: added in 2.4

Definition at line 3146 of file qgspallabeling.cpp.

bool QgsPalLabeling::staticWillUseLayer ( const QString & layerID )

static

Definition at line 3137 of file qgspallabeling.cpp.

QgsLabelingResults * QgsPalLabeling::takeResults ( )

Return pointer to recently computed results (in drawLabeling()) and pass the ownership of results to the caller.

Note: added in 2.4

Definition at line 4169 of file qgspallabeling.cpp.

bool QgsPalLabeling::willUseLayer ( QgsVectorLayer * layer )

overridevirtual

called to find out whether the layer is used for labeling

Implements QgsLabelingEngineInterface.

Definition at line 3132 of file qgspallabeling.cpp.

Member Data Documentation

QHash<QString, QgsDiagramLayerSettings> QgsPalLabeling::mActiveDiagramLayers

protected

Definition at line 844 of file qgspallabeling.h.

QHash<QString, QgsPalLayerSettings> QgsPalLabeling::mActiveLayers

protected

Definition at line 842 of file qgspallabeling.h.

QList<QgsLabelCandidate> QgsPalLabeling::mCandidates

protected

Definition at line 854 of file qgspallabeling.h.

int QgsPalLabeling::mCandLine

protected

Definition at line 848 of file qgspallabeling.h.

int QgsPalLabeling::mCandPoint

protected

Definition at line 848 of file qgspallabeling.h.

int QgsPalLabeling::mCandPolygon

protected

Definition at line 848 of file qgspallabeling.h.

bool QgsPalLabeling::mDrawOutlineLabels

protected

Definition at line 859 of file qgspallabeling.h.

QgsPalLayerSettings QgsPalLabeling::mInvalidLayerSettings

protected

Definition at line 845 of file qgspallabeling.h.

const QgsMapSettings* QgsPalLabeling::mMapSettings

protected

Definition at line 847 of file qgspallabeling.h.

pal::Pal* QgsPalLabeling::mPal

protected

Definition at line 851 of file qgspallabeling.h.

QgsLabelingResults* QgsPalLabeling::mResults

protected

Definition at line 861 of file qgspallabeling.h.

Search QgsPalLabeling::mSearch

protected

Definition at line 849 of file qgspallabeling.h.

bool QgsPalLabeling::mShowingAllLabels

protected

Definition at line 856 of file qgspallabeling.h.

bool QgsPalLabeling::mShowingCandidates

protected

Definition at line 855 of file qgspallabeling.h.

bool QgsPalLabeling::mShowingPartialsLabels

protected

Definition at line 858 of file qgspallabeling.h.

bool QgsPalLabeling::mShowingShadowRects

protected

Definition at line 857 of file qgspallabeling.h.

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

/tmp/buildd/qgis-2.8.2+12wheezy/src/core/qgspallabeling.h
/tmp/buildd/qgis-2.8.2+12wheezy/src/core/qgspallabeling.cpp

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation