A histogram style diagram. More...

#include <qgshistogramdiagram.h>

Inheritance diagram for QgsHistogramDiagram:

Public Member Functions
	QgsHistogramDiagram ()

QgsHistogramDiagram *	clone () const override
	Returns an instance that is equivalent to this one. More...

QString	diagramName () const override
	Gets a descriptive name for this diagram type. More...

QSizeF	diagramSize (const QgsAttributes &attributes, const QgsRenderContext &c, const QgsDiagramSettings &s) override
	Returns the size in map units the diagram will use to render. More...

QSizeF	diagramSize (const QgsFeature &feature, const QgsRenderContext &c, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is) override
	Returns the size in map units the diagram will use to render. Interpolate size. More...

double	legendSize (double value, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is) const override
	Returns the size of the legend item for the diagram corresponding to a specified value. More...

void	renderDiagram (const QgsFeature &feature, QgsRenderContext &c, const QgsDiagramSettings &s, QPointF position) override
	Draws the diagram at the given position (in pixel coordinates) More...

Public Member Functions inherited from QgsDiagram
virtual	~QgsDiagram ()

void	clearCache ()

QgsExpression *	getExpression (const QString &expression, const QgsExpressionContext &context)
	Returns a prepared expression for the specified context. More...

Additional Inherited Members
Protected Member Functions inherited from QgsDiagram
	QgsDiagram ()=default
	Constructor for QgsDiagram. More...

	QgsDiagram (const QgsDiagram &other)

QFont	scaledFont (const QgsDiagramSettings &s, const QgsRenderContext &c)
	Calculates a size to match the current settings and rendering context. More...

void	setPenWidth (QPen &pen, const QgsDiagramSettings &s, const QgsRenderContext &c)
	Changes the pen width to match the current settings and rendering context. More...

QSizeF	sizeForValue (double value, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is) const
	Returns the scaled size of a diagram for a value, respecting the specified diagram interpolation settings. More...

double	sizePainterUnits (double l, const QgsDiagramSettings &s, const QgsRenderContext &c)
	Calculates a length to match the current settings and rendering context. More...

QSizeF	sizePainterUnits (QSizeF size, const QgsDiagramSettings &s, const QgsRenderContext &c)
	Calculates a size to match the current settings and rendering context. More...

Detailed Description

A histogram style diagram.

Definition at line 40 of file qgshistogramdiagram.h.

Constructor & Destructor Documentation

◆ QgsHistogramDiagram()

QgsHistogramDiagram::QgsHistogramDiagram ( )

Definition at line 24 of file qgshistogramdiagram.cpp.

Member Function Documentation

◆ clone()

QgsHistogramDiagram * QgsHistogramDiagram::clone ( ) const

overridevirtual

Returns an instance that is equivalent to this one.

Since: QGIS 2.4

Implements QgsDiagram.

Definition at line 31 of file qgshistogramdiagram.cpp.

◆ diagramName()

QString QgsHistogramDiagram::diagramName ( ) const

overridevirtual

Gets a descriptive name for this diagram type.

Implements QgsDiagram.

Definition at line 113 of file qgshistogramdiagram.cpp.

◆ diagramSize() [1/2]

QSizeF QgsHistogramDiagram::diagramSize	(	const QgsAttributes &	attributes,
		const QgsRenderContext &	c,
		const QgsDiagramSettings &	s
	)

overridevirtual

Returns the size in map units the diagram will use to render.

Implements QgsDiagram.

Definition at line 118 of file qgshistogramdiagram.cpp.

◆ diagramSize() [2/2]

QSizeF QgsHistogramDiagram::diagramSize	(	const QgsFeature &	feature,
		const QgsRenderContext &	c,
		const QgsDiagramSettings &	s,
		const QgsDiagramInterpolationSettings &	is
	)

overridevirtual

Returns the size in map units the diagram will use to render. Interpolate size.

Implements QgsDiagram.

Definition at line 36 of file qgshistogramdiagram.cpp.

◆ legendSize()

double QgsHistogramDiagram::legendSize	(	double	value,
		const QgsDiagramSettings &	s,
		const QgsDiagramInterpolationSettings &	is
	)		const

overridevirtual

Returns the size of the legend item for the diagram corresponding to a specified value.

Parameters

value	value to return legend item size for
s	diagram settings
is	interpolation settings

Since: QGIS 2.16

Implements QgsDiagram.

Definition at line 98 of file qgshistogramdiagram.cpp.

◆ renderDiagram()

void QgsHistogramDiagram::renderDiagram	(	const QgsFeature &	feature,
		QgsRenderContext &	c,
		const QgsDiagramSettings &	s,
		QPointF	position
	)

overridevirtual

Draws the diagram at the given position (in pixel coordinates)

Implements QgsDiagram.

Definition at line 167 of file qgshistogramdiagram.cpp.

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

/build/qgis-3.20.0+99unstable/src/core/diagram/qgshistogramdiagram.h
/build/qgis-3.20.0+99unstable/src/core/diagram/qgshistogramdiagram.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsHistogramDiagram()

Member Function Documentation

◆ clone()

◆ diagramName()

◆ diagramSize() [1/2]

◆ diagramSize() [2/2]

◆ legendSize()

◆ renderDiagram()