sld support: use Title tag (instead of Abstract) exporting styles to SLD (fix #6152)

Author: brushtyler

src/core/symbology-ng/qgscategorizedsymbolrendererv2.cpp

@@ -97,10 +97,10 @@ void QgsRendererCategoryV2::toSld( QDomDocument &doc, QDomElement &element, QgsS
   ruleElem.appendChild( nameElem );
 
   QDomElement descrElem = doc.createElement( "se:Description" );
-  QDomElement abstractElem = doc.createElement( "se:Abstract" );
+  QDomElement titleElem = doc.createElement( "se:Title" );
   QString descrStr = QString( "%1 is '%2'" ).arg( attrName ).arg( mValue.toString() );
-  abstractElem.appendChild( doc.createTextNode( !mLabel.isEmpty() ? mLabel : descrStr ) );
-  descrElem.appendChild( abstractElem );
+  titleElem.appendChild( doc.createTextNode( !mLabel.isEmpty() ? mLabel : descrStr ) );
+  descrElem.appendChild( titleElem );
   ruleElem.appendChild( descrElem );
 
   // create the ogc:Filter for the range

src/core/symbology-ng/qgsgraduatedsymbolrendererv2.cpp

@@ -114,10 +114,10 @@ void QgsRendererRangeV2::toSld( QDomDocument &doc, QDomElement &element, QgsStri
   ruleElem.appendChild( nameElem );
 
   QDomElement descrElem = doc.createElement( "se:Description" );
-  QDomElement abstractElem = doc.createElement( "se:Abstract" );
+  QDomElement titleElem = doc.createElement( "se:Title" );
   QString descrStr = QString( "range: %1 - %2" ).arg( mLowerValue ).arg( mUpperValue );
-  abstractElem.appendChild( doc.createTextNode( !mLabel.isEmpty() ? mLabel : descrStr ) );
-  descrElem.appendChild( abstractElem );
+  titleElem.appendChild( doc.createTextNode( !mLabel.isEmpty() ? mLabel : descrStr ) );
+  descrElem.appendChild( titleElem );
   ruleElem.appendChild( descrElem );
 
   // create the ogc:Filter for the range

src/core/symbology-ng/qgsrulebasedrendererv2.cpp

@@ -226,16 +226,27 @@ void QgsRuleBasedRendererV2::Rule::toSld( QDomDocument& doc, QDomElement &elemen
     QDomElement ruleElem = doc.createElement( "se:Rule" );
     element.appendChild( ruleElem );
 
+    //XXX: <se:Name> is the rule identifier, but our the Rule objects
+    // have no properties could be used as identifier. Use the label.
     QDomElement nameElem = doc.createElement( "se:Name" );
     nameElem.appendChild( doc.createTextNode( mLabel ) );
     ruleElem.appendChild( nameElem );
 
-    if ( !mDescription.isEmpty() )
+    if ( !mLabel.isEmpty() || !mDescription.isEmpty() )
     {
       QDomElement descrElem = doc.createElement( "se:Description" );
-      QDomElement abstractElem = doc.createElement( "se:Abstract" );
-      abstractElem.appendChild( doc.createTextNode( mDescription ) );
-      descrElem.appendChild( abstractElem );
+      if ( !mLabel.isEmpty() )
+      {
+        QDomElement titleElem = doc.createElement( "se:Title" );
+        titleElem.appendChild( doc.createTextNode( mLabel ) );
+        descrElem.appendChild( titleElem );
+      }
+      if ( !mDescription.isEmpty() )
+      {
+        QDomElement abstractElem = doc.createElement( "se:Abstract" );
+        abstractElem.appendChild( doc.createTextNode( mDescription ) );
+        descrElem.appendChild( abstractElem );
+      }
       ruleElem.appendChild( descrElem );
     }
 
@@ -477,33 +488,35 @@ QgsRuleBasedRendererV2::Rule* QgsRuleBasedRendererV2::Rule::createFromSld( QDomE
   {
     if ( childElem.localName() == "Name" )
     {
-      label = childElem.firstChild().nodeValue();
+      // <se:Name> tag contains the rule identifier,
+      // so prefer title tag for the label property value
+      if ( label.isEmpty() )
+        label = childElem.firstChild().nodeValue();
     }
     else if ( childElem.localName() == "Description" )
     {
       // <se:Description> can contains a title and an abstract
-      // prefer Abstract if available
-      QDomElement abstractElem = childElem.firstChildElement( "Abstract" );
       QDomElement titleElem = childElem.firstChildElement( "Title" );
-      if ( !abstractElem.isNull() )
+      if ( !titleElem.isNull() )
       {
-        description = abstractElem.firstChild().nodeValue();
+        label = titleElem.firstChild().nodeValue();
       }
-      else if ( !titleElem.isNull() && description.isEmpty() )
+
+      QDomElement abstractElem = childElem.firstChildElement( "Abstract" );
+      if ( !abstractElem.isNull() )
       {
-        description = titleElem.firstChild().nodeValue();
+        description = abstractElem.firstChild().nodeValue();
       }
     }
     else if ( childElem.localName() == "Abstract" )
     {
-      // <sld:Abstract>
+      // <sld:Abstract> (v1.0)
       description = childElem.firstChild().nodeValue();
     }
     else if ( childElem.localName() == "Title" )
     {
-      // <sld:Title>
-      if ( description.isEmpty() )
-        description = childElem.firstChild().nodeValue();
+      // <sld:Title> (v1.0)
+      label = childElem.firstChild().nodeValue();
     }
     else if ( childElem.localName() == "Filter" )
     {

src/core/symbology-ng/qgssinglesymbolrendererv2.cpp

@@ -260,12 +260,36 @@ QgsFeatureRendererV2* QgsSingleSymbolRendererV2::createFromSld( QDomElement& ele
   {
     if ( childElem.localName() == "Name" )
     {
-      label = childElem.firstChild().nodeValue();
+      // <se:Name> tag contains the rule identifier,
+      // so prefer title tag for the label property value
+      if ( label.isEmpty() )
+        label = childElem.firstChild().nodeValue();
+    }
+    else if ( childElem.localName() == "Description" )
+    {
+      // <se:Description> can contains a title and an abstract
+      QDomElement titleElem = childElem.firstChildElement( "Title" );
+      if ( !titleElem.isNull() )
+      {
+        label = titleElem.firstChild().nodeValue();
+      }
+
+      QDomElement abstractElem = childElem.firstChildElement( "Abstract" );
+      if ( !abstractElem.isNull() )
+      {
+        description = abstractElem.firstChild().nodeValue();
+      }
     }
-    else if ( childElem.localName() == "Description" || childElem.localName() == "Abstract" )
+    else if ( childElem.localName() == "Abstract" )
     {
+      // <sld:Abstract> (v1.0)
       description = childElem.firstChild().nodeValue();
     }
+    else if ( childElem.localName() == "Title" )
+    {
+      // <sld:Title> (v1.0)
+      label = childElem.firstChild().nodeValue();
+    }
     else if ( childElem.localName().endsWith( "Symbolizer" ) )
     {
       // create symbol layers for this symbolizer