Add method that returns legend item text and symbol pointers to v2 renderers

git-svn-id: http://svn.osgeo.org/qgis/trunk@13113 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/core/symbology-ng/qgscategorizedsymbolrendererv2.cpp

@@ -359,6 +359,25 @@ QgsLegendSymbologyList QgsCategorizedSymbolRendererV2::legendSymbologyItems( QSi
   return lst;
 }
 
+QgsLegendSymbolList QgsCategorizedSymbolRendererV2::legendSymbolItems()
+{
+  QSettings settings;
+  bool showClassifiers = settings.value( "/qgis/showLegendClassifiers", false ).toBool();
+
+  QgsLegendSymbolList lst;
+  if ( showClassifiers )
+  {
+    lst << qMakePair( classAttribute(), ( QgsSymbolV2* )0 );
+  }
+
+  QgsCategoryList::const_iterator catIt = mCategories.constBegin();
+  for ( ; catIt != mCategories.constEnd(); ++catIt )
+  {
+    lst << qMakePair( catIt->label(), catIt->symbol() );
+  }
+  return lst;
+}
+
 
 QgsSymbolV2* QgsCategorizedSymbolRendererV2::sourceSymbol()
 {

src/core/symbology-ng/qgscategorizedsymbolrendererv2.h

@@ -83,6 +83,10 @@ class CORE_EXPORT QgsCategorizedSymbolRendererV2 : public QgsFeatureRendererV2
     //! 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 );
 

src/core/symbology-ng/qgsgraduatedsymbolrendererv2.cpp

@@ -482,6 +482,25 @@ QgsLegendSymbologyList QgsGraduatedSymbolRendererV2::legendSymbologyItems( QSize
   return lst;
 }
 
+QgsLegendSymbolList QgsGraduatedSymbolRendererV2::legendSymbolItems()
+{
+  QSettings settings;
+  bool showClassifiers = settings.value( "/qgis/showLegendClassifiers", false ).toBool();
+
+  QgsLegendSymbolList lst;
+  if ( showClassifiers )
+  {
+    lst << qMakePair( classAttribute(), ( QgsSymbolV2* )0 );
+  }
+
+  QgsRangeList::const_iterator rangeIt = mRanges.constBegin();
+  for ( ; rangeIt != mRanges.constEnd(); ++rangeIt )
+  {
+    lst << qMakePair( rangeIt->label(), rangeIt->symbol() );
+  }
+  return lst;
+}
+
 QgsSymbolV2* QgsGraduatedSymbolRendererV2::sourceSymbol()
 {
   return mSourceSymbol;

src/core/symbology-ng/qgsgraduatedsymbolrendererv2.h

@@ -97,6 +97,10 @@ class CORE_EXPORT QgsGraduatedSymbolRendererV2 : public QgsFeatureRendererV2
     //! 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 );
 

src/core/symbology-ng/qgsrendererv2.cpp

@@ -312,7 +312,7 @@ QgsFeatureRendererV2* QgsFeatureRendererV2::load( QDomElement& element )
   QString rendererType = element.attribute( "type" );
 
   QgsRendererV2AbstractMetadata* m = QgsRendererV2Registry::instance()->rendererMetadata( rendererType );
-  if (m == NULL)
+  if ( m == NULL )
     return NULL;
 
   QgsFeatureRendererV2* r = m->createRenderer( element );
@@ -334,6 +334,11 @@ QgsLegendSymbologyList QgsFeatureRendererV2::legendSymbologyItems( QSize iconSiz
   return QgsLegendSymbologyList();
 }
 
+QgsLegendSymbolList QgsFeatureRendererV2::legendSymbolItems()
+{
+  return QgsLegendSymbolList();
+}
+
 void QgsFeatureRendererV2::setVertexMarkerAppearance( int type, int size )
 {
   mCurrentVertexMarkerType = type;

src/core/symbology-ng/qgsrendererv2.h

@@ -22,6 +22,7 @@ typedef QList<QgsSymbolV2*> QgsSymbolV2List;
 typedef QMap<QString, QgsSymbolV2* > QgsSymbolV2Map;
 
 typedef QList< QPair<QString, QPixmap> > QgsLegendSymbologyList;
+typedef QList< QPair<QString, QgsSymbolV2*> > QgsLegendSymbolList;
 
 #define RENDERER_TAG_NAME   "renderer-v2"
 
@@ -92,6 +93,10 @@ class CORE_EXPORT QgsFeatureRendererV2
     //! 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();
+
     //! set type and size of editing vertex markers for subsequent rendering
     void setVertexMarkerAppearance( int type, int size );
 

src/core/symbology-ng/qgssinglesymbolrendererv2.cpp

@@ -110,3 +110,10 @@ QgsLegendSymbologyList QgsSingleSymbolRendererV2::legendSymbologyItems( QSize ic
   lst << qMakePair( QString(), pix );
   return lst;
 }
+
+QgsLegendSymbolList QgsSingleSymbolRendererV2::legendSymbolItems()
+{
+  QgsLegendSymbolList lst;
+  lst << qMakePair( QString(), mSymbol );
+  return lst;
+}

src/core/symbology-ng/qgssinglesymbolrendererv2.h

@@ -37,6 +37,10 @@ class CORE_EXPORT QgsSingleSymbolRendererV2 : public QgsFeatureRendererV2
     //! 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();
+
   protected:
     QgsSymbolV2* mSymbol;
 };