QGIS API Documentation 3.37.0-Master (fdefdf9c27f)
qgspiediagram.h
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1/***************************************************************************
2 qgspiediagram.h
3 ---------------------
4 begin : March 2011
5 copyright : (C) 2011 by Marco Hugentobler
6 email : marco dot hugentobler at sourcepole dot ch
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15#ifndef QGSPIEDIAGRAM_H
16#define QGSPIEDIAGRAM_H
17
18#define DIAGRAM_NAME_PIE "Pie"
19
20#include "qgis_core.h"
21#include "qgis.h"
22#include "qgsdiagram.h"
23#include <QPen>
24#include <QBrush>
25
26class QPainter;
27class QPointF;
30class QgsFeature;
32
39{
40 public:
42
43 QgsPieDiagram *clone() const override SIP_FACTORY;
44
45 void renderDiagram( const QgsFeature &feature, QgsRenderContext &c, const QgsDiagramSettings &s, QPointF position ) override;
46
47 QSizeF diagramSize( const QgsAttributes &attributes, const QgsRenderContext &c, const QgsDiagramSettings &s ) override;
48 QSizeF diagramSize( const QgsFeature &feature, const QgsRenderContext &c, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is ) override;
49 double legendSize( double value, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is ) const override;
50 QString diagramName() const override;
51
52 private:
53 QBrush mCategoryBrush;
54 QPen mPen;
55
56};
57
58#endif // QGSPIEDIAGRAM_H
A vector of attributes.
Definition: qgsattributes.h:59
Additional diagram settings for interpolated size rendering.
Stores the settings for rendering a single diagram.
Base class for all diagram types.
Definition: qgsdiagram.h:40
virtual QString diagramName() const =0
Gets a descriptive name for this diagram type.
virtual QSizeF diagramSize(const QgsAttributes &attributes, const QgsRenderContext &c, const QgsDiagramSettings &s)=0
Returns the size in map units the diagram will use to render.
virtual double legendSize(double value, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is) const =0
Returns the size of the legend item for the diagram corresponding to a specified value.
virtual QgsDiagram * clone() const =0
Returns an instance that is equivalent to this one.
virtual void renderDiagram(const QgsFeature &feature, QgsRenderContext &c, const QgsDiagramSettings &s, QPointF position)=0
Draws the diagram at the given position (in pixel coordinates)
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Definition: qgsfeature.h:56
A pie chart diagram.
Definition: qgspiediagram.h:39
Contains information about the context of a rendering operation.
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into c
#define SIP_FACTORY
Definition: qgis_sip.h:76
#define SIP_NODEFAULTCTORS
Definition: qgis_sip.h:101