allow for expressions in symbol rotation and scale

the single, graduated and categorised symbol renderers have been
refactored to avoid use of raw pointers (auto_ptr are used instead, they
are deprecated in c++11 but the change for unique_ptr is an easy one and
they clearly state the design intend: exclusive ownership)

2 general use function to quote and unquote strings for/from xml have
been added to qgis.h

python/core/symbology-ng/qgscategorizedsymbolrendererv2.sip

@@ -123,5 +123,9 @@ class QgsCategorizedSymbolRendererV2 : QgsFeatureRendererV2
     void rebuildHash();
 
     QgsSymbolV2* symbolForValue( QVariant value );
+
+  private:
+    QgsCategorizedSymbolRendererV2( const QgsCategorizedSymbolRendererV2 & );
+    QgsCategorizedSymbolRendererV2 & operator=( const QgsCategorizedSymbolRendererV2 & );
 };
 

python/core/symbology-ng/qgsgraduatedsymbolrendererv2.sip

@@ -147,4 +147,8 @@ class QgsGraduatedSymbolRendererV2 : QgsFeatureRendererV2
 
   protected:
     QgsSymbolV2* symbolForValue( double value );
+
+  private:
+    QgsGraduatedSymbolRendererV2( const QgsGraduatedSymbolRendererV2 & );
+    QgsGraduatedSymbolRendererV2 & operator=( const QgsGraduatedSymbolRendererV2 & );
 };

python/core/symbology-ng/qgspointdisplacementrenderer.sip

@@ -65,4 +65,8 @@ class QgsPointDisplacementRenderer : QgsFeatureRendererV2
 
     void setTolerance( double t );
     double tolerance() const;
+
+  private:
+    QgsPointDisplacementRenderer( const QgsPointDisplacementRenderer & );
+    QgsPointDisplacementRenderer & operator=( const QgsPointDisplacementRenderer & );
 };

python/core/symbology-ng/qgsrendererv2.sip

@@ -170,4 +170,8 @@ class QgsFeatureRendererV2
     static const unsigned char* _getPolygon( QPolygonF& pts, QList<QPolygonF>& holes, QgsRenderContext& context, const unsigned char* wkb );
 
     void setScaleMethodToSymbol( QgsSymbolV2* symbol, int scaleMethod );
+  private:
+    QgsFeatureRendererV2( const QgsFeatureRendererV2 & );
+    QgsFeatureRendererV2 & operator=( const QgsFeatureRendererV2 & );
+
 };

python/core/symbology-ng/qgsrulebasedrendererv2.sip

@@ -201,4 +201,8 @@ class QgsRuleBasedRendererV2 : QgsFeatureRendererV2
     static void refineRuleRanges( QgsRuleBasedRendererV2::Rule* initialRule, QgsGraduatedSymbolRendererV2* r );
     //! take a rule and create a list of new rules with intervals of scales given by the passed scale denominators
     static void refineRuleScales( QgsRuleBasedRendererV2::Rule* initialRule, QList<int> scales );
+
+  private:
+    QgsRuleBasedRendererV2( const QgsRuleBasedRendererV2 & );
+    QgsRuleBasedRendererV2 & operator=( const QgsRuleBasedRendererV2 & );
 };

python/core/symbology-ng/qgssinglesymbolrendererv2.sip

@@ -60,4 +60,8 @@ class QgsSingleSymbolRendererV2 : QgsFeatureRendererV2
     //! return a list of item text / symbol
     //! @note: this method was added in version 1.5
     // virtual QgsLegendSymbolList legendSymbolItems();
+
+  private:
+    QgsSingleSymbolRendererV2( const QgsSingleSymbolRendererV2 & );
+    QgsSingleSymbolRendererV2 & operator=( const QgsSingleSymbolRendererV2 & );
 };

src/core/qgis.h

@@ -414,4 +414,27 @@ typedef unsigned long long qgssize;
 #endif
 #endif
 
+inline
+QString qgsXmlEncode( QString str )
+{
+  // string passed as value to avoid internal copy
+  str.replace( "&",  "&" );
+  str.replace( "\"", """ );
+  str.replace( "'", "'" );
+  str.replace( "<",   "&lt;" );
+  str.replace( ">",   "&gt;" );
+  return str;
+}
+
+inline
+QString qgsXmlDecode( QString str )
+{
+  // string passed as value to avoid internal copy
+  str.replace( "&amp;",  "&" );
+  str.replace( "&quot;", "\"" );
+  str.replace( "&apos;",  "'" );
+  str.replace( "&lt;",  "<" );
+  str.replace( "&gt;",  ">" );
+  return str;
+}
 #endif