Quantum GIS API Documentation
1.8
|
00001 /*************************************************************************** 00002 qgsuniquevaluerenderer.h - description 00003 ------------------- 00004 begin : July 2004 00005 copyright : (C) 2004 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 QGSUNIQUEVALUERENDERER_H 00018 #define QGSUNIQUEVALUERENDERER_H 00019 00020 #include "qgsrenderer.h" 00021 #include <QMap> 00022 00023 class CORE_EXPORT QgsUniqueValueRenderer: public QgsRenderer 00024 { 00025 public: 00026 QgsUniqueValueRenderer( QGis::GeometryType type ); 00027 QgsUniqueValueRenderer( const QgsUniqueValueRenderer& other ); 00028 QgsUniqueValueRenderer& operator=( const QgsUniqueValueRenderer& other ); 00029 virtual ~QgsUniqueValueRenderer(); 00032 virtual bool willRenderFeature( QgsFeature *f ); 00033 00036 void renderFeature( QgsRenderContext &renderContext, QgsFeature& f, QImage* img, bool selected, double opacity = 1.0 ); 00037 00043 int readXML( const QDomNode& rnode, QgsVectorLayer& vl ); 00046 virtual bool writeXML( QDomNode & layer_node, QDomDocument & document, const QgsVectorLayer& vl ) const; 00048 bool needsAttributes() const; 00050 QgsAttributeList classificationAttributes() const; 00051 void updateSymbolAttributes(); 00053 QString name() const; 00056 void insertValue( QString name, QgsSymbol* symbol ); 00058 void clearValues(); 00060 void setClassificationField( int field ); 00062 int classificationField() const; 00064 const QList<QgsSymbol*> symbols() const { return mSymbols.values(); } 00067 const QMap<QString, QgsSymbol*> symbolMap() const { return mSymbols; } 00068 QgsRenderer* clone() const; 00069 00071 QgsSymbol *symbolForFeature( const QgsFeature* f ); 00072 00073 protected: 00075 int mClassificationField; 00077 QMap<QString, QgsSymbol*> mSymbols; 00078 00080 QgsAttributeList mSymbolAttributes; 00081 bool mSymbolAttributesDirty; // insertValue was called 00082 }; 00083 00084 inline bool QgsUniqueValueRenderer::needsAttributes() const 00085 { 00086 return true; 00087 } 00088 00089 #endif