QgsCategorizedSymbolRendererV2 Class Reference

#include <qgscategorizedsymbolrendererv2.h>

Inheritance diagram for QgsCategorizedSymbolRendererV2:

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Collaboration diagram for QgsCategorizedSymbolRendererV2:

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List of all members.

Public Member Functions

 QgsCategorizedSymbolRendererV2 (QString attrName=QString(), QgsCategoryList categories=QgsCategoryList())
virtual ~QgsCategorizedSymbolRendererV2 ()
virtual QgsSymbolV2symbolForFeature (QgsFeature &feature)
virtual void startRender (QgsRenderContext &context, const QgsVectorLayer *vlayer)
virtual void stopRender (QgsRenderContext &context)
virtual QList< QString > usedAttributes ()
virtual QString dump ()
 for debugging
virtual QgsFeatureRendererV2clone ()
virtual QgsSymbolV2List symbols ()
 for symbol levels
const QgsCategoryListcategories ()
int categoryIndexForValue (QVariant val)
 return index of category with specified value (-1 if not found)
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
void setClassAttribute (QString attr)
virtual QDomElement save (QDomDocument &doc)
 store renderer info to XML element
virtual QgsLegendSymbologyList legendSymbologyItems (QSize iconSize)
 return a list of symbology items for the legend
virtual QgsLegendSymbolList legendSymbolItems ()
 return a list of item text / symbol
QgsSymbolV2sourceSymbol ()
void setSourceSymbol (QgsSymbolV2 *sym)
QgsVectorColorRampV2sourceColorRamp ()
void setSourceColorRamp (QgsVectorColorRampV2 *ramp)
void setRotationField (QString fieldName)
QString rotationField () const
void setSizeScaleField (QString fieldName)
QString sizeScaleField () const

Static Public Member Functions

static QgsFeatureRendererV2create (QDomElement &element)
 create renderer from XML element

Protected Member Functions

void rebuildHash ()
QgsSymbolV2symbolForValue (QVariant value)

Protected Attributes

QString mAttrName
QgsCategoryList mCategories
QgsSymbolV2mSourceSymbol
QgsVectorColorRampV2mSourceColorRamp
QString mRotationField
QString mSizeScaleField
int mAttrNum
 attribute index (derived from attribute name in startRender)
int mRotationFieldIdx
int mSizeScaleFieldIdx
QHash< QString, QgsSymbolV2 * > mSymbolHash
 hashtable for faster access to symbols
QHash< QString, QgsSymbolV2 * > mTempSymbols
 temporary symbols, used for data-defined rotation and scaling


Detailed Description

Definition at line 43 of file qgscategorizedsymbolrendererv2.h.


Constructor & Destructor Documentation

QgsCategorizedSymbolRendererV2::QgsCategorizedSymbolRendererV2 ( QString  attrName = QString(),
QgsCategoryList  categories = QgsCategoryList() 
)

Definition at line 73 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories, QgsDebugMsg, and QgsRendererCategoryV2::symbol().

Referenced by clone(), and create().

QgsCategorizedSymbolRendererV2::~QgsCategorizedSymbolRendererV2 (  )  [virtual]

Definition at line 92 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories, mSourceColorRamp, and mSourceSymbol.


Member Function Documentation

QgsSymbolV2 * QgsCategorizedSymbolRendererV2::symbolForFeature ( QgsFeature feature  )  [virtual]

void QgsCategorizedSymbolRendererV2::startRender ( QgsRenderContext context,
const QgsVectorLayer vlayer 
) [virtual]

void QgsCategorizedSymbolRendererV2::stopRender ( QgsRenderContext context  )  [virtual]

Implements QgsFeatureRendererV2.

Definition at line 261 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories, and mTempSymbols.

QList< QString > QgsCategorizedSymbolRendererV2::usedAttributes (  )  [virtual]

Implements QgsFeatureRendererV2.

Definition at line 277 of file qgscategorizedsymbolrendererv2.cpp.

References mAttrName, mRotationField, and mSizeScaleField.

QString QgsCategorizedSymbolRendererV2::dump (  )  [virtual]

for debugging

Reimplemented from QgsFeatureRendererV2.

Definition at line 288 of file qgscategorizedsymbolrendererv2.cpp.

References mAttrName, and mCategories.

QgsFeatureRendererV2 * QgsCategorizedSymbolRendererV2::clone (  )  [virtual]

QgsSymbolV2List QgsCategorizedSymbolRendererV2::symbols (  )  [virtual]

for symbol levels

Implements QgsFeatureRendererV2.

Definition at line 309 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

Referenced by save().

const QgsCategoryList& QgsCategorizedSymbolRendererV2::categories (  )  [inline]

int QgsCategorizedSymbolRendererV2::categoryIndexForValue ( QVariant  val  ) 

return index of category with specified value (-1 if not found)

Definition at line 173 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

bool QgsCategorizedSymbolRendererV2::updateCategoryValue ( int  catIndex,
const QVariant &  value 
)

Definition at line 183 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

bool QgsCategorizedSymbolRendererV2::updateCategorySymbol ( int  catIndex,
QgsSymbolV2 symbol 
)

Definition at line 191 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

bool QgsCategorizedSymbolRendererV2::updateCategoryLabel ( int  catIndex,
QString  label 
)

Definition at line 199 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

void QgsCategorizedSymbolRendererV2::addCategory ( const QgsRendererCategoryV2 category  ) 

bool QgsCategorizedSymbolRendererV2::deleteCategory ( int  catIndex  ) 

Definition at line 219 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

void QgsCategorizedSymbolRendererV2::deleteAllCategories (  ) 

Definition at line 228 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

QString QgsCategorizedSymbolRendererV2::classAttribute (  )  const [inline]

void QgsCategorizedSymbolRendererV2::setClassAttribute ( QString  attr  )  [inline]

Definition at line 79 of file qgscategorizedsymbolrendererv2.h.

QgsFeatureRendererV2 * QgsCategorizedSymbolRendererV2::create ( QDomElement &  element  )  [static]

QDomElement QgsCategorizedSymbolRendererV2::save ( QDomDocument &  doc  )  [virtual]

QgsLegendSymbologyList QgsCategorizedSymbolRendererV2::legendSymbologyItems ( QSize  iconSize  )  [virtual]

QgsLegendSymbolList QgsCategorizedSymbolRendererV2::legendSymbolItems (  )  [virtual]

return a list of item text / symbol

Note:
: this method was added in version 1.5

Reimplemented from QgsFeatureRendererV2.

Definition at line 465 of file qgscategorizedsymbolrendererv2.cpp.

References classAttribute(), and mCategories.

QgsSymbolV2 * QgsCategorizedSymbolRendererV2::sourceSymbol (  ) 

Definition at line 485 of file qgscategorizedsymbolrendererv2.cpp.

References mSourceSymbol.

void QgsCategorizedSymbolRendererV2::setSourceSymbol ( QgsSymbolV2 sym  ) 

Definition at line 489 of file qgscategorizedsymbolrendererv2.cpp.

References mSourceSymbol.

Referenced by clone(), and create().

QgsVectorColorRampV2 * QgsCategorizedSymbolRendererV2::sourceColorRamp (  ) 

Definition at line 495 of file qgscategorizedsymbolrendererv2.cpp.

References mSourceColorRamp.

void QgsCategorizedSymbolRendererV2::setSourceColorRamp ( QgsVectorColorRampV2 ramp  ) 

Definition at line 499 of file qgscategorizedsymbolrendererv2.cpp.

References mSourceColorRamp.

Referenced by clone(), and create().

void QgsCategorizedSymbolRendererV2::setRotationField ( QString  fieldName  )  [inline]

Note:
added in 1.6

Definition at line 101 of file qgscategorizedsymbolrendererv2.h.

Referenced by clone(), and create().

QString QgsCategorizedSymbolRendererV2::rotationField (  )  const [inline]

Note:
added in 1.6

Definition at line 103 of file qgscategorizedsymbolrendererv2.h.

Referenced by clone().

void QgsCategorizedSymbolRendererV2::setSizeScaleField ( QString  fieldName  )  [inline]

Note:
added in 1.6

Definition at line 106 of file qgscategorizedsymbolrendererv2.h.

Referenced by clone(), and create().

QString QgsCategorizedSymbolRendererV2::sizeScaleField (  )  const [inline]

Note:
added in 1.6

Definition at line 108 of file qgscategorizedsymbolrendererv2.h.

Referenced by clone().

void QgsCategorizedSymbolRendererV2::rebuildHash (  )  [protected]

QgsSymbolV2 * QgsCategorizedSymbolRendererV2::symbolForValue ( QVariant  value  )  [protected]

Definition at line 110 of file qgscategorizedsymbolrendererv2.cpp.

References mSymbolHash, and QgsDebugMsg.

Referenced by symbolForFeature().


Member Data Documentation

Definition at line 115 of file qgscategorizedsymbolrendererv2.h.

Referenced by save(), startRender(), and usedAttributes().

Definition at line 116 of file qgscategorizedsymbolrendererv2.h.

Referenced by save(), startRender(), and usedAttributes().

attribute index (derived from attribute name in startRender)

Definition at line 119 of file qgscategorizedsymbolrendererv2.h.

Referenced by startRender(), and symbolForFeature().

Definition at line 120 of file qgscategorizedsymbolrendererv2.h.

Referenced by startRender(), and symbolForFeature().

Definition at line 120 of file qgscategorizedsymbolrendererv2.h.

Referenced by startRender(), and symbolForFeature().

hashtable for faster access to symbols

Definition at line 123 of file qgscategorizedsymbolrendererv2.h.

Referenced by rebuildHash(), and symbolForValue().

temporary symbols, used for data-defined rotation and scaling

Definition at line 126 of file qgscategorizedsymbolrendererv2.h.

Referenced by startRender(), stopRender(), and symbolForFeature().


The documentation for this class was generated from the following files:

Generated on Sat Feb 4 19:17:24 2012 for Quantum GIS API Documentation by  doxygen 1.5.6