Quantum GIS API Documentation
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00001 /*************************************************************************** 00002 qgscontinuouscolorrenderer.h - description 00003 ------------------- 00004 begin : Nov 2003 00005 copyright : (C) 2003 by Marco Hugentobler 00006 email : [email protected] 00007 ***************************************************************************/ 00008 00009 /*************************************************************************** 00010 * * 00011 * This program is free software; you can redistribute it and/or modify * 00012 * it under the terms of the GNU General Public License as published by * 00013 * the Free Software Foundation; either version 2 of the License, or * 00014 * (at your option) any later version. * 00015 * * 00016 ***************************************************************************/ 00017 #ifndef QGSCONTINUOUSCOLORRENDERER_H 00018 #define QGSCONTINUOUSCOLORRENDERER_H 00019 00020 #include "qgsrenderer.h" 00021 #include "qgsmaptopixel.h" 00022 #include "qgspoint.h" 00023 #include "qgsfeature.h" 00024 00025 class QgsSymbol; 00026 class QPainter; 00027 class QImage; 00028 00030 class CORE_EXPORT QgsContinuousColorRenderer: public QgsRenderer 00031 { 00032 public: 00033 QgsContinuousColorRenderer( QGis::GeometryType type ); 00034 QgsContinuousColorRenderer( const QgsContinuousColorRenderer& other ); 00035 QgsContinuousColorRenderer& operator=( const QgsContinuousColorRenderer& other ); 00036 virtual ~QgsContinuousColorRenderer(); 00037 00040 void renderFeature( QgsRenderContext &renderContext, QgsFeature& f, QImage* img, bool selected, double opacity = 1.0 ); 00041 00043 int classificationField() const; 00045 void setClassificationField( int id ); 00047 void setMinimumSymbol( QgsSymbol* sy ); 00049 void setMaximumSymbol( QgsSymbol* sy ); 00051 void setDrawPolygonOutline( bool draw ) { mDrawPolygonOutline = draw;} 00053 const QgsSymbol* minimumSymbol() const; 00055 const QgsSymbol* maximumSymbol() const; 00057 bool drawPolygonOutline() const { return mDrawPolygonOutline; } 00063 virtual int readXML( const QDomNode& rnode, QgsVectorLayer& vl ); 00066 virtual bool writeXML( QDomNode & layer_node, QDomDocument & document, const QgsVectorLayer& vl ) const; 00068 bool needsAttributes() const; 00070 QgsAttributeList classificationAttributes() const; 00072 QString name() const; 00074 const QList<QgsSymbol*> symbols() const; 00075 QgsRenderer* clone() const; 00076 protected: 00078 int mClassificationField; 00080 QgsSymbol* mMinimumSymbol; 00082 QgsSymbol* mMaximumSymbol; 00084 bool mDrawPolygonOutline; 00085 }; 00086 00087 inline int QgsContinuousColorRenderer::classificationField() const 00088 { 00089 return mClassificationField; 00090 } 00091 00092 inline void QgsContinuousColorRenderer::setClassificationField( int id ) 00093 { 00094 mClassificationField = id; 00095 } 00096 00097 inline const QgsSymbol* QgsContinuousColorRenderer::minimumSymbol() const 00098 { 00099 return mMinimumSymbol; 00100 } 00101 00102 inline const QgsSymbol* QgsContinuousColorRenderer::maximumSymbol() const 00103 { 00104 return mMaximumSymbol; 00105 } 00106 00107 inline bool QgsContinuousColorRenderer::needsAttributes() const 00108 { 00109 return true; 00110 } 00111 00112 00113 #endif