QGIS API Documentation 3.27.0-Master (f261cc1f8b)
Public Member Functions | Protected Member Functions | List of all members
QgsLinearlyInterpolatedDiagramRenderer Class Reference

#include <qgsdiagramrenderer.h>

Inheritance diagram for QgsLinearlyInterpolatedDiagramRenderer:
Inheritance graph
[legend]

Public Member Functions

 QgsLinearlyInterpolatedDiagramRenderer ()
 
 QgsLinearlyInterpolatedDiagramRenderer (const QgsLinearlyInterpolatedDiagramRenderer &other)
 Copy constructor. More...
 
 ~QgsLinearlyInterpolatedDiagramRenderer () override
 
QString classificationAttributeExpression () const
 
bool classificationAttributeIsExpression () const
 
QString classificationField () const
 Returns the field name used for interpolating the diagram size. More...
 
QgsLinearlyInterpolatedDiagramRendererclone () const override
 Returns new instance that is equivalent to this one. More...
 
QgsDataDefinedSizeLegenddataDefinedSizeLegend () const
 Returns configuration of appearance of legend. More...
 
QList< QString > diagramAttributes () const override
 Returns attribute indices needed for diagram rendering. More...
 
QList< QgsDiagramSettingsdiagramSettings () const override
 Returns list with all diagram settings in the renderer. More...
 
QList< QgsLayerTreeModelLegendNode * > legendItems (QgsLayerTreeLayer *nodeLayer) const override
 Returns list of legend nodes for the diagram. More...
 
QSizeF lowerSize () const
 
double lowerValue () const
 
QgsLinearlyInterpolatedDiagramRendereroperator= (const QgsLinearlyInterpolatedDiagramRenderer &other)
 
void readXml (const QDomElement &elem, const QgsReadWriteContext &context) override
 Reads diagram state from a DOM element. More...
 
QSet< QString > referencedFields (const QgsExpressionContext &context=QgsExpressionContext()) const override
 Returns the set of any fields required for diagram rendering. More...
 
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. More...
 
void setDataDefinedSizeLegend (QgsDataDefinedSizeLegend *settings)
 Configures appearance of legend. More...
 
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. More...
 
- Public Member Functions inherited from QgsDiagramRenderer
 QgsDiagramRenderer ()=default
 Constructor for QgsDiagramRenderer. More...
 
virtual ~QgsDiagramRenderer ()=default
 
bool attributeLegend () const
 Returns true if renderer will show legend items for diagram attributes. More...
 
virtual QgsDiagramRendererclone () const =0
 Returns new instance that is equivalent to this one. More...
 
QgsDiagramdiagram () const
 
virtual QList< QString > diagramAttributes () const =0
 Returns attribute indices needed for diagram rendering. More...
 
virtual QList< QgsDiagramSettingsdiagramSettings () const =0
 Returns list with all diagram settings in the renderer. More...
 
virtual QList< QgsLayerTreeModelLegendNode * > legendItems (QgsLayerTreeLayer *nodeLayer) const
 Returns list of legend nodes for the diagram. More...
 
virtual void readXml (const QDomElement &elem, const QgsReadWriteContext &context)=0
 Reads diagram state from a DOM element. More...
 
virtual QSet< QString > referencedFields (const QgsExpressionContext &context=QgsExpressionContext()) const
 Returns the set of any fields required for diagram rendering. More...
 
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. More...
 
virtual QString rendererName () const =0
 
void setAttributeLegend (bool enabled)
 Sets whether the renderer will show legend items for diagram attributes. More...
 
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. More...
 
virtual void writeXml (QDomElement &layerElem, QDomDocument &doc, const QgsReadWriteContext &context) const =0
 Writes diagram state to a DOM element. More...
 

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). More...
 
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. More...
 
- 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. More...
 
void _writeXml (QDomElement &rendererElem, QDomDocument &doc, const QgsReadWriteContext &context) const
 Writes internal QgsDiagramRenderer diagram state to a DOM element. More...
 
void convertSizeToMapUnits (QSizeF &size, const QgsRenderContext &context) const
 Converts size from mm to map units. More...
 
virtual bool diagramSettings (const QgsFeature &feature, const QgsRenderContext &c, QgsDiagramSettings &s) const =0
 Returns diagram settings for a feature (or false if the diagram for the feature is not to be rendered). More...
 
virtual QSizeF diagramSize (const QgsFeature &features, const QgsRenderContext &c) const =0
 Returns size of the diagram (in painter units) or an invalid size in case of error. More...
 
QgsDiagramRendereroperator= (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. More...
 
- Protected Attributes inherited from QgsDiagramRenderer
std::unique_ptr< QgsDiagrammDiagram
 Reference to the object that does the real diagram rendering. More...
 
bool mShowAttributeLegend = true
 Whether to show an attribute legend for the diagrams. More...
 

Detailed Description

Definition at line 855 of file qgsdiagramrenderer.h.

Constructor & Destructor Documentation

◆ QgsLinearlyInterpolatedDiagramRenderer() [1/2]

QgsLinearlyInterpolatedDiagramRenderer::QgsLinearlyInterpolatedDiagramRenderer ( )

Definition at line 646 of file qgsdiagramrenderer.cpp.

◆ ~QgsLinearlyInterpolatedDiagramRenderer()

QgsLinearlyInterpolatedDiagramRenderer::~QgsLinearlyInterpolatedDiagramRenderer ( )
override

Definition at line 659 of file qgsdiagramrenderer.cpp.

◆ QgsLinearlyInterpolatedDiagramRenderer() [2/2]

QgsLinearlyInterpolatedDiagramRenderer::QgsLinearlyInterpolatedDiagramRenderer ( const QgsLinearlyInterpolatedDiagramRenderer other)

Copy constructor.

Definition at line 651 of file qgsdiagramrenderer.cpp.

Member Function Documentation

◆ classificationAttributeExpression()

QString QgsLinearlyInterpolatedDiagramRenderer::classificationAttributeExpression ( ) const
inline

Definition at line 904 of file qgsdiagramrenderer.h.

◆ classificationAttributeIsExpression()

bool QgsLinearlyInterpolatedDiagramRenderer::classificationAttributeIsExpression ( ) const
inline

Definition at line 907 of file qgsdiagramrenderer.h.

◆ classificationField()

QString QgsLinearlyInterpolatedDiagramRenderer::classificationField ( ) const
inline

Returns the field name used for interpolating the diagram size.

See also
setClassificationField()
Since
QGIS 3.0

Definition at line 895 of file qgsdiagramrenderer.h.

◆ clone()

QgsLinearlyInterpolatedDiagramRenderer * QgsLinearlyInterpolatedDiagramRenderer::clone ( ) const
overridevirtual

Returns new instance that is equivalent to this one.

Since
QGIS 2.4

Implements QgsDiagramRenderer.

Definition at line 677 of file qgsdiagramrenderer.cpp.

◆ dataDefinedSizeLegend()

QgsDataDefinedSizeLegend * QgsLinearlyInterpolatedDiagramRenderer::dataDefinedSizeLegend ( ) const

Returns configuration of appearance of legend.

Will return nullptr if no configuration has been set.

Since
QGIS 3.0

Definition at line 1010 of file qgsdiagramrenderer.cpp.

◆ diagramAttributes()

QList< QString > QgsLinearlyInterpolatedDiagramRenderer::diagramAttributes ( ) const
overridevirtual

Returns attribute indices needed for diagram rendering.

Implements QgsDiagramRenderer.

Definition at line 696 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 682 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
featurethe feature
crender context
sout: diagram settings for the feature

Implements QgsDiagramRenderer.

Definition at line 689 of file qgsdiagramrenderer.cpp.

◆ diagramSize()

QSizeF QgsLinearlyInterpolatedDiagramRenderer::diagramSize ( const QgsFeature features,
const QgsRenderContext c 
) const
overrideprotectedvirtual

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

Implements QgsDiagramRenderer.

Definition at line 720 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
Since
QGIS 2.10

Reimplemented from QgsDiagramRenderer.

Definition at line 952 of file qgsdiagramrenderer.cpp.

◆ lowerSize()

QSizeF QgsLinearlyInterpolatedDiagramRenderer::lowerSize ( ) const
inline

Definition at line 885 of file qgsdiagramrenderer.h.

◆ lowerValue()

double QgsLinearlyInterpolatedDiagramRenderer::lowerValue ( ) const
inline

Definition at line 879 of file qgsdiagramrenderer.h.

◆ operator=()

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

Definition at line 664 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 725 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
contextexpression context the diagrams will be drawn using
Since
QGIS 2.16

Reimplemented from QgsDiagramRenderer.

Definition at line 701 of file qgsdiagramrenderer.cpp.

◆ rendererName()

QString QgsLinearlyInterpolatedDiagramRenderer::rendererName ( ) const
inlineoverridevirtual

Implements QgsDiagramRenderer.

Definition at line 876 of file qgsdiagramrenderer.h.

◆ setClassificationAttributeExpression()

void QgsLinearlyInterpolatedDiagramRenderer::setClassificationAttributeExpression ( const QString &  expression)
inline

Definition at line 905 of file qgsdiagramrenderer.h.

◆ setClassificationAttributeIsExpression()

void QgsLinearlyInterpolatedDiagramRenderer::setClassificationAttributeIsExpression ( bool  isExpression)
inline

Definition at line 908 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()
Since
QGIS 3.0

Definition at line 902 of file qgsdiagramrenderer.h.

◆ setDataDefinedSizeLegend()

void QgsLinearlyInterpolatedDiagramRenderer::setDataDefinedSizeLegend ( QgsDataDefinedSizeLegend settings)

Configures appearance of legend.

Takes ownership of the passed settings objects.

Since
QGIS 3.0

Definition at line 1004 of file qgsdiagramrenderer.cpp.

◆ setDiagramSettings()

void QgsLinearlyInterpolatedDiagramRenderer::setDiagramSettings ( const QgsDiagramSettings s)
inline

Definition at line 870 of file qgsdiagramrenderer.h.

◆ setLowerSize()

void QgsLinearlyInterpolatedDiagramRenderer::setLowerSize ( QSizeF  s)
inline

Definition at line 884 of file qgsdiagramrenderer.h.

◆ setLowerValue()

void QgsLinearlyInterpolatedDiagramRenderer::setLowerValue ( double  val)
inline

Definition at line 878 of file qgsdiagramrenderer.h.

◆ setUpperSize()

void QgsLinearlyInterpolatedDiagramRenderer::setUpperSize ( QSizeF  s)
inline

Definition at line 887 of file qgsdiagramrenderer.h.

◆ setUpperValue()

void QgsLinearlyInterpolatedDiagramRenderer::setUpperValue ( double  val)
inline

Definition at line 881 of file qgsdiagramrenderer.h.

◆ upperSize()

QSizeF QgsLinearlyInterpolatedDiagramRenderer::upperSize ( ) const
inline

Definition at line 888 of file qgsdiagramrenderer.h.

◆ upperValue()

double QgsLinearlyInterpolatedDiagramRenderer::upperValue ( ) const
inline

Definition at line 882 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 776 of file qgsdiagramrenderer.cpp.


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