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 26 class QPainter; 27 class QPointF; 28 class QgsDiagramSettings; 29 class QgsDiagramInterpolationSettings; 30 class QgsFeature; 31 class QgsRenderContext; 32 33 /** 34 * \ingroup core 35 * \class QgsPieDiagram 36 * \brief A pie chart diagram. 37 */ 38 class CORE_EXPORT QgsPieDiagram: public QgsDiagram SIP_NODEFAULTCTORS 39 { 40 public: 41 QgsPieDiagram(); 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 59