Alters the size of rendered diagrams using linear scaling. More...

#include <qgsdiagramrenderer.h>

Inheritance diagram for QgsLinearlyInterpolatedDiagramRenderer:

Public Member Functions
	QgsLinearlyInterpolatedDiagramRenderer ()
	QgsLinearlyInterpolatedDiagramRenderer (const QgsLinearlyInterpolatedDiagramRenderer &other)
	~QgsLinearlyInterpolatedDiagramRenderer () override
QString	classificationAttributeExpression () const
bool	classificationAttributeIsExpression () const
QString	classificationField () const
	Returns the field name used for interpolating the diagram size.
QgsLinearlyInterpolatedDiagramRenderer *	clone () const override
	Returns new instance that is equivalent to this one.
QgsDataDefinedSizeLegend *	dataDefinedSizeLegend () const
	Returns configuration of appearance of legend.
QList< QString >	diagramAttributes () const override
	Returns attribute indices needed for diagram rendering.
QList< QgsDiagramSettings >	diagramSettings () const override
	Returns list with all diagram settings in the renderer.
QList< QgsLayerTreeModelLegendNode * >	legendItems (QgsLayerTreeLayer *nodeLayer) const override
	Returns list of legend nodes for the diagram.
QSizeF	lowerSize () const
double	lowerValue () const
QgsLinearlyInterpolatedDiagramRenderer &	operator= (const QgsLinearlyInterpolatedDiagramRenderer &other)
void	readXml (const QDomElement &elem, const QgsReadWriteContext &context) override
	Reads diagram state from a DOM element.
QSet< QString >	referencedFields (const QgsExpressionContext &context=QgsExpressionContext()) const override
	Returns the set of any fields required for diagram rendering.
QString	rendererName () const override
void	setClassificationAttributeExpression (const QString &expression)
void	setClassificationAttributeIsExpression (bool isExpression)
void	setClassificationField (const QString &field)
	Sets the field name used for interpolating the diagram size.
void	setDataDefinedSizeLegend (QgsDataDefinedSizeLegend *settings)
	Configures appearance of legend.
void	setDiagramSettings (const QgsDiagramSettings &s)
void	setLowerSize (QSizeF s)
void	setLowerValue (double val)
void	setUpperSize (QSizeF s)
void	setUpperValue (double val)
QSizeF	upperSize () const
double	upperValue () const
void	writeXml (QDomElement &layerElem, QDomDocument &doc, const QgsReadWriteContext &context) const override
	Writes diagram state to a DOM element.
Public Member Functions inherited from QgsDiagramRenderer
	QgsDiagramRenderer ()=default
virtual	~QgsDiagramRenderer ()=default
bool	attributeLegend () const
	Returns `true` if renderer will show legend items for diagram attributes.
QgsDiagram *	diagram () const
virtual void	renderDiagram (const QgsFeature &feature, QgsRenderContext &c, QPointF pos, const QgsPropertyCollection &properties=QgsPropertyCollection()) const
	Renders the diagram for a specified feature at a specific position in the passed render context.
void	setAttributeLegend (bool enabled)
	Sets whether the renderer will show legend items for diagram attributes.
void	setDiagram (QgsDiagram *d)
virtual QSizeF	sizeMapUnits (const QgsFeature &feature, const QgsRenderContext &c) const
	Returns size of the diagram for a feature in map units. Returns an invalid QSizeF in case of error.

Static Public Attributes
static const QString	DIAGRAM_RENDERER_NAME_LINEARLY_INTERPOLATED = QLatin1String( "LinearlyInterpolated" )

Protected Member Functions
bool	diagramSettings (const QgsFeature &feature, const QgsRenderContext &c, QgsDiagramSettings &s) const override
	Returns diagram settings for a feature (or `false` if the diagram for the feature is not to be rendered).
QSizeF	diagramSize (const QgsFeature &, const QgsRenderContext &c) const override
	Returns size of the diagram (in painter units) or an invalid size in case of error.
Protected Member Functions inherited from QgsDiagramRenderer
	QgsDiagramRenderer (const QgsDiagramRenderer &other)
void	_readXml (const QDomElement &elem, const QgsReadWriteContext &context)
	Reads internal QgsDiagramRenderer state from a DOM element.
void	_writeXml (QDomElement &rendererElem, QDomDocument &doc, const QgsReadWriteContext &context) const
	Writes internal QgsDiagramRenderer diagram state to a DOM element.
void	convertSizeToMapUnits (QSizeF &size, const QgsRenderContext &context) const
	Converts size from mm to map units.
QgsDiagramRenderer &	operator= (const QgsDiagramRenderer &other)

Additional Inherited Members
Static Protected Member Functions inherited from QgsDiagramRenderer
static int	dpiPaintDevice (const QPainter *)
	Returns the paint device dpi (or -1 in case of error.
Protected Attributes inherited from QgsDiagramRenderer
std::unique_ptr< QgsDiagram >	mDiagram
	Reference to the object that does the real diagram rendering.
bool	mShowAttributeLegend = true
	Whether to show an attribute legend for the diagrams.

Detailed Description

Alters the size of rendered diagrams using linear scaling.

Definition at line 911 of file qgsdiagramrenderer.h.

Constructor & Destructor Documentation

◆ QgsLinearlyInterpolatedDiagramRenderer() [1/2]

QgsLinearlyInterpolatedDiagramRenderer::QgsLinearlyInterpolatedDiagramRenderer ( )

Definition at line 749 of file qgsdiagramrenderer.cpp.

◆ ~QgsLinearlyInterpolatedDiagramRenderer()

QgsLinearlyInterpolatedDiagramRenderer::~QgsLinearlyInterpolatedDiagramRenderer ( )

override

Definition at line 762 of file qgsdiagramrenderer.cpp.

◆ QgsLinearlyInterpolatedDiagramRenderer() [2/2]

QgsLinearlyInterpolatedDiagramRenderer::QgsLinearlyInterpolatedDiagramRenderer ( const QgsLinearlyInterpolatedDiagramRenderer & other )

Definition at line 754 of file qgsdiagramrenderer.cpp.

Member Function Documentation

◆ classificationAttributeExpression()

QString QgsLinearlyInterpolatedDiagramRenderer::classificationAttributeExpression ( ) const

inline

Definition at line 959 of file qgsdiagramrenderer.h.

◆ classificationAttributeIsExpression()

bool QgsLinearlyInterpolatedDiagramRenderer::classificationAttributeIsExpression ( ) const

inline

Definition at line 962 of file qgsdiagramrenderer.h.

◆ classificationField()

QString QgsLinearlyInterpolatedDiagramRenderer::classificationField ( ) const

inline

Returns the field name used for interpolating the diagram size.

See also: setClassificationField()

Definition at line 951 of file qgsdiagramrenderer.h.

◆ clone()

QgsLinearlyInterpolatedDiagramRenderer * QgsLinearlyInterpolatedDiagramRenderer::clone ( ) const

overridevirtual

Returns new instance that is equivalent to this one.

Implements QgsDiagramRenderer.

Definition at line 780 of file qgsdiagramrenderer.cpp.

◆ dataDefinedSizeLegend()

QgsDataDefinedSizeLegend * QgsLinearlyInterpolatedDiagramRenderer::dataDefinedSizeLegend ( ) const

Returns configuration of appearance of legend.

Will return nullptr if no configuration has been set.

Definition at line 1435 of file qgsdiagramrenderer.cpp.

◆ diagramAttributes()

QList< QString > QgsLinearlyInterpolatedDiagramRenderer::diagramAttributes ( ) const

overridevirtual

Returns attribute indices needed for diagram rendering.

Implements QgsDiagramRenderer.

Definition at line 799 of file qgsdiagramrenderer.cpp.

◆ diagramSettings() [1/2]

QList< QgsDiagramSettings > QgsLinearlyInterpolatedDiagramRenderer::diagramSettings ( ) const

overridevirtual

Returns list with all diagram settings in the renderer.

Implements QgsDiagramRenderer.

Definition at line 785 of file qgsdiagramrenderer.cpp.

◆ diagramSettings() [2/2]

bool QgsLinearlyInterpolatedDiagramRenderer::diagramSettings	(	const QgsFeature &	feature,
		const QgsRenderContext &	c,
		QgsDiagramSettings &	s ) const

overrideprotectedvirtual

Returns diagram settings for a feature (or false if the diagram for the feature is not to be rendered).

Used internally within renderDiagram()

Parameters

feature	the feature
c	render context
s	out: diagram settings for the feature

Implements QgsDiagramRenderer.

Definition at line 792 of file qgsdiagramrenderer.cpp.

◆ diagramSize()

QSizeF QgsLinearlyInterpolatedDiagramRenderer::diagramSize	(	const QgsFeature &	feature,
		const QgsRenderContext &	c ) const

overrideprotectedvirtual

Returns size of the diagram (in painter units) or an invalid size in case of error.

Parameters

feature	the feature
c	render context

Implements QgsDiagramRenderer.

Definition at line 823 of file qgsdiagramrenderer.cpp.

◆ legendItems()

QList< QgsLayerTreeModelLegendNode * > QgsLinearlyInterpolatedDiagramRenderer::legendItems ( QgsLayerTreeLayer * nodeLayer ) const

overridevirtual

Returns list of legend nodes for the diagram.

Note: caller is responsible for deletion of QgsLayerTreeModelLegendNodes

Reimplemented from QgsDiagramRenderer.

Definition at line 1372 of file qgsdiagramrenderer.cpp.

◆ lowerSize()

QSizeF QgsLinearlyInterpolatedDiagramRenderer::lowerSize ( ) const

inline

Definition at line 942 of file qgsdiagramrenderer.h.

◆ lowerValue()

double QgsLinearlyInterpolatedDiagramRenderer::lowerValue ( ) const

inline

Definition at line 936 of file qgsdiagramrenderer.h.

◆ operator=()

QgsLinearlyInterpolatedDiagramRenderer & QgsLinearlyInterpolatedDiagramRenderer::operator= ( const QgsLinearlyInterpolatedDiagramRenderer & other )

Definition at line 767 of file qgsdiagramrenderer.cpp.

◆ readXml()

void QgsLinearlyInterpolatedDiagramRenderer::readXml	(	const QDomElement &	elem,
		const QgsReadWriteContext &	context )

overridevirtual

Reads diagram state from a DOM element.

Subclasses should ensure that _readXml() is called by their readXml implementation to restore the general QgsDiagramRenderer settings.

See also: writeXml()

Implements QgsDiagramRenderer.

Definition at line 828 of file qgsdiagramrenderer.cpp.

◆ referencedFields()

QSet< QString > QgsLinearlyInterpolatedDiagramRenderer::referencedFields ( const QgsExpressionContext & context = QgsExpressionContext() ) const

overridevirtual

Returns the set of any fields required for diagram rendering.

Parameters

context expression context the diagrams will be drawn using

Reimplemented from QgsDiagramRenderer.

Definition at line 804 of file qgsdiagramrenderer.cpp.

◆ rendererName()

QString QgsLinearlyInterpolatedDiagramRenderer::rendererName ( ) const

inlineoverridevirtual

Implements QgsDiagramRenderer.

Definition at line 933 of file qgsdiagramrenderer.h.

◆ setClassificationAttributeExpression()

void QgsLinearlyInterpolatedDiagramRenderer::setClassificationAttributeExpression ( const QString & expression )

inline

Definition at line 960 of file qgsdiagramrenderer.h.

◆ setClassificationAttributeIsExpression()

void QgsLinearlyInterpolatedDiagramRenderer::setClassificationAttributeIsExpression ( bool isExpression )

inline

Definition at line 963 of file qgsdiagramrenderer.h.

◆ setClassificationField()

void QgsLinearlyInterpolatedDiagramRenderer::setClassificationField ( const QString & field )

inline

Sets the field name used for interpolating the diagram size.

See also: classificationField()

Definition at line 957 of file qgsdiagramrenderer.h.

◆ setDataDefinedSizeLegend()

void QgsLinearlyInterpolatedDiagramRenderer::setDataDefinedSizeLegend ( QgsDataDefinedSizeLegend * settings )

Configures appearance of legend.

Takes ownership of the passed settings objects.

Definition at line 1429 of file qgsdiagramrenderer.cpp.

◆ setDiagramSettings()

void QgsLinearlyInterpolatedDiagramRenderer::setDiagramSettings ( const QgsDiagramSettings & s )

inline

Definition at line 927 of file qgsdiagramrenderer.h.

◆ setLowerSize()

void QgsLinearlyInterpolatedDiagramRenderer::setLowerSize ( QSizeF s )

inline

Definition at line 941 of file qgsdiagramrenderer.h.

◆ setLowerValue()

void QgsLinearlyInterpolatedDiagramRenderer::setLowerValue ( double val )

inline

Definition at line 935 of file qgsdiagramrenderer.h.

◆ setUpperSize()

void QgsLinearlyInterpolatedDiagramRenderer::setUpperSize ( QSizeF s )

inline

Definition at line 944 of file qgsdiagramrenderer.h.

◆ setUpperValue()

void QgsLinearlyInterpolatedDiagramRenderer::setUpperValue ( double val )

inline

Definition at line 938 of file qgsdiagramrenderer.h.

◆ upperSize()

QSizeF QgsLinearlyInterpolatedDiagramRenderer::upperSize ( ) const

inline

Definition at line 945 of file qgsdiagramrenderer.h.

◆ upperValue()

double QgsLinearlyInterpolatedDiagramRenderer::upperValue ( ) const

inline

Definition at line 939 of file qgsdiagramrenderer.h.

◆ writeXml()

void QgsLinearlyInterpolatedDiagramRenderer::writeXml	(	QDomElement &	layerElem,
		QDomDocument &	doc,
		const QgsReadWriteContext &	context ) const

overridevirtual

Writes diagram state to a DOM element.

Subclasses should ensure that _writeXml() is called by their writeXml implementation to save the general QgsDiagramRenderer settings.

See also: readXml()

Implements QgsDiagramRenderer.

Definition at line 879 of file qgsdiagramrenderer.cpp.

Member Data Documentation

◆ DIAGRAM_RENDERER_NAME_LINEARLY_INTERPOLATED

const QString QgsLinearlyInterpolatedDiagramRenderer::DIAGRAM_RENDERER_NAME_LINEARLY_INTERPOLATED = QLatin1String( "LinearlyInterpolated" )

static

Definition at line 914 of file qgsdiagramrenderer.h.

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

/build/qgis-3.99.0+git20251207+21b3aa880ba+99sid/src/core/qgsdiagramrenderer.h
/build/qgis-3.99.0+git20251207+21b3aa880ba+99sid/src/core/qgsdiagramrenderer.cpp

Public Member Functions

Static Public Attributes

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsLinearlyInterpolatedDiagramRenderer() [1/2]

◆ ~QgsLinearlyInterpolatedDiagramRenderer()

◆ QgsLinearlyInterpolatedDiagramRenderer() [2/2]

Member Function Documentation

◆ classificationAttributeExpression()

◆ classificationAttributeIsExpression()

◆ classificationField()

◆ clone()

◆ dataDefinedSizeLegend()

◆ diagramAttributes()

◆ diagramSettings() [1/2]

◆ diagramSettings() [2/2]

◆ diagramSize()

◆ legendItems()

◆ lowerSize()

◆ lowerValue()

◆ operator=()

◆ readXml()

◆ referencedFields()

◆ rendererName()

◆ setClassificationAttributeExpression()

◆ setClassificationAttributeIsExpression()

◆ setClassificationField()

◆ setDataDefinedSizeLegend()

◆ setDiagramSettings()

◆ setLowerSize()

◆ setLowerValue()

◆ setUpperSize()

◆ setUpperValue()

◆ upperSize()

◆ upperValue()

◆ writeXml()

Member Data Documentation

◆ DIAGRAM_RENDERER_NAME_LINEARLY_INTERPOLATED