Quantum GIS API Documentation  1.8
Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes
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 void toSld (QDomDocument &doc, QDomElement &element) const
 used from subclasses to create SLD Rule elements following SLD v1.1 specs
virtual int capabilities ()
 returns bitwise OR-ed capabilities of the renderer
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 60 of file qgscategorizedsymbolrendererv2.h.


Constructor & Destructor Documentation

Definition at line 117 of file qgscategorizedsymbolrendererv2.cpp.

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

Referenced by clone(), and create().

Definition at line 138 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories, mSourceColorRamp, and mSourceSymbol.


Member Function Documentation

virtual int QgsCategorizedSymbolRendererV2::capabilities ( ) [inline, virtual]

returns bitwise OR-ed capabilities of the renderer

Note:
added in 2.0

Reimplemented from QgsFeatureRendererV2.

Definition at line 84 of file qgscategorizedsymbolrendererv2.h.

References QgsFeatureRendererV2::RotationField.

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

Definition at line 228 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

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

Definition at line 283 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

Definition at line 274 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

QString QgsCategorizedSymbolRendererV2::dump ( ) [virtual]

for debugging

Reimplemented from QgsFeatureRendererV2.

Definition at line 357 of file qgscategorizedsymbolrendererv2.cpp.

References mAttrName, and mCategories.

return a list of item text / symbol

Note:
: this method was added in version 1.5

Reimplemented from QgsFeatureRendererV2.

Definition at line 551 of file qgscategorizedsymbolrendererv2.cpp.

References classAttribute(), and mCategories.

QString QgsCategorizedSymbolRendererV2::rotationField ( ) const [inline, virtual]
Note:
added in 1.6

Reimplemented from QgsFeatureRendererV2.

Definition at line 126 of file qgscategorizedsymbolrendererv2.h.

Referenced by clone().

QDomElement QgsCategorizedSymbolRendererV2::save ( QDomDocument &  doc) [virtual]
void QgsCategorizedSymbolRendererV2::setClassAttribute ( QString  attr) [inline]

Definition at line 102 of file qgscategorizedsymbolrendererv2.h.

void QgsCategorizedSymbolRendererV2::setRotationField ( QString  fieldName) [inline, virtual]
Note:
added in 1.6

Reimplemented from QgsFeatureRendererV2.

Definition at line 124 of file qgscategorizedsymbolrendererv2.h.

Referenced by clone(), and create().

void QgsCategorizedSymbolRendererV2::setSizeScaleField ( QString  fieldName) [inline]
Note:
added in 1.6

Definition at line 129 of file qgscategorizedsymbolrendererv2.h.

Referenced by clone(), and create().

Definition at line 585 of file qgscategorizedsymbolrendererv2.cpp.

References mSourceColorRamp.

Referenced by clone(), and create().

Definition at line 575 of file qgscategorizedsymbolrendererv2.cpp.

References mSourceSymbol.

Referenced by clone(), and create().

Note:
added in 1.6

Definition at line 131 of file qgscategorizedsymbolrendererv2.h.

Referenced by clone().

Definition at line 581 of file qgscategorizedsymbolrendererv2.cpp.

References mSourceColorRamp.

Definition at line 571 of file qgscategorizedsymbolrendererv2.cpp.

References mSourceSymbol.

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

Implements QgsFeatureRendererV2.

Definition at line 316 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories, and mTempSymbols.

Definition at line 156 of file qgscategorizedsymbolrendererv2.cpp.

References mSymbolHash, and QgsDebugMsg.

Referenced by symbolForFeature().

for symbol levels

Implements QgsFeatureRendererV2.

Definition at line 395 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

Referenced by save().

void QgsCategorizedSymbolRendererV2::toSld ( QDomDocument &  doc,
QDomElement &  element 
) const [virtual]

used from subclasses to create SLD Rule elements following SLD v1.1 specs

Note:
added in 1.9

Reimplemented from QgsFeatureRendererV2.

Definition at line 378 of file qgscategorizedsymbolrendererv2.cpp.

References mAttrName, mCategories, mRotationField, and mSizeScaleField.

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

Definition at line 254 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

Definition at line 246 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

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

Definition at line 238 of file qgscategorizedsymbolrendererv2.cpp.

References mCategories.

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

Member Data Documentation

attribute index (derived from attribute name in startRender)

Definition at line 142 of file qgscategorizedsymbolrendererv2.h.

Referenced by startRender(), and symbolForFeature().

Definition at line 138 of file qgscategorizedsymbolrendererv2.h.

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

Definition at line 143 of file qgscategorizedsymbolrendererv2.h.

Referenced by startRender(), and symbolForFeature().

Definition at line 139 of file qgscategorizedsymbolrendererv2.h.

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

Definition at line 143 of file qgscategorizedsymbolrendererv2.h.

Referenced by startRender(), and symbolForFeature().

hashtable for faster access to symbols

Definition at line 146 of file qgscategorizedsymbolrendererv2.h.

Referenced by rebuildHash(), and symbolForValue().

temporary symbols, used for data-defined rotation and scaling

Definition at line 149 of file qgscategorizedsymbolrendererv2.h.

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


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