/usr/include/qgis/qgscategorizedsymbolrendererv2.h is in libqgis-dev 1.7.4+1.7.5~20120320-1.1+b1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | #ifndef QGSCATEGORIZEDSYMBOLRENDERERV2_H
#define QGSCATEGORIZEDSYMBOLRENDERERV2_H
#include "qgsrendererv2.h"
#include <QHash>
class QgsVectorColorRampV2;
class QgsVectorLayer;
/* \brief categorized renderer */
class CORE_EXPORT QgsRendererCategoryV2
{
public:
//! takes ownership of symbol
QgsRendererCategoryV2( QVariant value, QgsSymbolV2* symbol, QString label );
//! copy constructor
QgsRendererCategoryV2( const QgsRendererCategoryV2& cat );
~QgsRendererCategoryV2();
QVariant value() const;
QgsSymbolV2* symbol() const;
QString label() const;
void setValue( const QVariant &value );
void setSymbol( QgsSymbolV2* s );
void setLabel( const QString &label );
// debugging
QString dump();
protected:
QVariant mValue;
QgsSymbolV2* mSymbol;
QString mLabel;
};
typedef QList<QgsRendererCategoryV2> QgsCategoryList;
class CORE_EXPORT QgsCategorizedSymbolRendererV2 : public QgsFeatureRendererV2
{
public:
QgsCategorizedSymbolRendererV2( QString attrName = QString(), QgsCategoryList categories = QgsCategoryList() );
virtual ~QgsCategorizedSymbolRendererV2();
virtual QgsSymbolV2* symbolForFeature( QgsFeature& feature );
virtual void startRender( QgsRenderContext& context, const QgsVectorLayer *vlayer );
virtual void stopRender( QgsRenderContext& context );
virtual QList<QString> usedAttributes();
virtual QString dump();
virtual QgsFeatureRendererV2* clone();
virtual QgsSymbolV2List symbols();
const QgsCategoryList& categories() { return mCategories; }
//! return index of category with specified value (-1 if not found)
int categoryIndexForValue( QVariant val );
bool updateCategoryValue( int catIndex, const QVariant &value );
bool updateCategorySymbol( int catIndex, QgsSymbolV2* symbol );
bool updateCategoryLabel( int catIndex, QString label );
void addCategory( const QgsRendererCategoryV2 &category );
bool deleteCategory( int catIndex );
void deleteAllCategories();
QString classAttribute() const { return mAttrName; }
void setClassAttribute( QString attr ) { mAttrName = attr; }
//! create renderer from XML element
static QgsFeatureRendererV2* create( QDomElement& element );
//! store renderer info to XML element
virtual QDomElement save( QDomDocument& doc );
//! return a list of symbology items for the legend
virtual QgsLegendSymbologyList legendSymbologyItems( QSize iconSize );
//! return a list of item text / symbol
//! @note: this method was added in version 1.5
virtual QgsLegendSymbolList legendSymbolItems();
QgsSymbolV2* sourceSymbol();
void setSourceSymbol( QgsSymbolV2* sym );
QgsVectorColorRampV2* sourceColorRamp();
void setSourceColorRamp( QgsVectorColorRampV2* ramp );
//! @note added in 1.6
void setRotationField( QString fieldName ) { mRotationField = fieldName; }
//! @note added in 1.6
QString rotationField() const { return mRotationField; }
//! @note added in 1.6
void setSizeScaleField( QString fieldName ) { mSizeScaleField = fieldName; }
//! @note added in 1.6
QString sizeScaleField() const { return mSizeScaleField; }
protected:
QString mAttrName;
QgsCategoryList mCategories;
QgsSymbolV2* mSourceSymbol;
QgsVectorColorRampV2* mSourceColorRamp;
QString mRotationField;
QString mSizeScaleField;
//! attribute index (derived from attribute name in startRender)
int mAttrNum;
int mRotationFieldIdx, mSizeScaleFieldIdx;
//! hashtable for faster access to symbols
QHash<QString, QgsSymbolV2*> mSymbolHash;
//! temporary symbols, used for data-defined rotation and scaling
QHash<QString, QgsSymbolV2*> mTempSymbols;
void rebuildHash();
QgsSymbolV2* symbolForValue( QVariant value );
};
#endif // QGSCATEGORIZEDSYMBOLRENDERERV2_H
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