1 /***************************************************************************
2     qgshistogramdiagram.h
3     ---------------------
4     begin                : August 2012
5     copyright            : (C) 2012 by Matthias Kuhn
6     email                : matthias at opengis 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 
16 #ifndef QGSHISTOGRAMDIAGRAM_H
17 #define QGSHISTOGRAMDIAGRAM_H
18 
19 #define DIAGRAM_NAME_HISTOGRAM "Histogram"
20 
21 #include "qgis_core.h"
22 #include "qgis.h"
23 #include "qgsdiagram.h"
24 #include <QPen>
25 #include <QBrush>
26 
27 class QgsFeature;
28 class QPainter;
29 class QPointF;
30 class QgsDiagramSettings;
31 class QgsDiagramInterpolationSettings;
32 
33 class QgsRenderContext;
34 
35 /**
36  * \ingroup core
37  * \class QgsHistogramDiagram
38  * \brief A histogram style diagram.
39  */
40 class CORE_EXPORT QgsHistogramDiagram: public QgsDiagram SIP_NODEFAULTCTORS
41 {
42   public:
43     QgsHistogramDiagram();
44 
45     QgsHistogramDiagram *clone() const override SIP_FACTORY;
46 
47     void renderDiagram( const QgsFeature &feature, QgsRenderContext &c, const QgsDiagramSettings &s, QPointF position ) override;
48 
49     QSizeF diagramSize( const QgsAttributes &attributes, const QgsRenderContext &c, const QgsDiagramSettings &s ) override;
50     QSizeF diagramSize( const QgsFeature &feature, const QgsRenderContext &c, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is ) override;
51     double legendSize( double value, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is ) const override;
52     QString diagramName() const override;
53 
54   private:
55     QBrush mCategoryBrush;
56     QPen   mPen;
57     double mScaleFactor;
58 };
59 
60 
61 #endif // QGSHISTOGRAMDIAGRAM_H
62