QGIS API Documentation  2.17.0-Master (872e6d2)
Public Member Functions | List of all members
QgsPieDiagram Class Reference

#include <qgspiediagram.h>

Inheritance diagram for QgsPieDiagram:
Inheritance graph
[legend]

Public Member Functions

 QgsPieDiagram ()
 
 ~QgsPieDiagram ()
 
virtual QgsPieDiagramclone () const override
 Returns an instance that is equivalent to this one. More...
 
QString diagramName () const override
 
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. 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 ()
 
virtual Q_DECL_DEPRECATED QSizeF diagramSize (const QgsAttributes &attributes, const QgsRenderContext &c, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is)
 
Q_DECL_DEPRECATED QgsExpressiongetExpression (const QString &expression, const QgsFields *fields)
 
QgsExpressiongetExpression (const QString &expression, const QgsExpressionContext &context)
 Returns a prepared expression for the specified context. More...
 
virtual Q_DECL_DEPRECATED void renderDiagram (const QgsAttributes &att, QgsRenderContext &c, const QgsDiagramSettings &s, QPointF position)
 

Additional Inherited Members

- Protected Member Functions inherited from QgsDiagram
 QgsDiagram ()
 
 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...
 
QSizeF sizePainterUnits (QSizeF size, const QgsDiagramSettings &s, const QgsRenderContext &c)
 Calculates a size to match the current settings and rendering context. More...
 
float sizePainterUnits (float l, const QgsDiagramSettings &s, const QgsRenderContext &c)
 Calculates a length to match the current settings and rendering context. More...
 

Detailed Description

Definition at line 35 of file qgspiediagram.h.

Constructor & Destructor Documentation

QgsPieDiagram::QgsPieDiagram ( )

Definition at line 23 of file qgspiediagram.cpp.

QgsPieDiagram::~QgsPieDiagram ( )

Definition at line 29 of file qgspiediagram.cpp.

Member Function Documentation

QgsPieDiagram * QgsPieDiagram::clone ( ) const
overridevirtual

Returns an instance that is equivalent to this one.

Note
added in 2.4

Implements QgsDiagram.

Definition at line 33 of file qgspiediagram.cpp.

QString QgsPieDiagram::diagramName ( ) const
inlineoverridevirtual

Implements QgsDiagram.

Definition at line 48 of file qgspiediagram.h.

QSizeF QgsPieDiagram::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 74 of file qgspiediagram.cpp.

QSizeF QgsPieDiagram::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 38 of file qgspiediagram.cpp.

double QgsPieDiagram::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
valuevalue to return legend item size for
sdiagram settings
isinterpolation settings
Note
added in QGIS 2.16

Implements QgsDiagram.

Definition at line 68 of file qgspiediagram.cpp.

void QgsPieDiagram::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 81 of file qgspiediagram.cpp.


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