Export layer drawing order to extended capabilities

qgis · Sep 6, 2012 · 0d61dfe · 0d61dfe
1 parent 91a06b3
commit 0d61dfe
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diff --git a/src/mapserver/qgsprojectparser.cpp b/src/mapserver/qgsprojectparser.cpp
@@ -96,6 +96,11 @@ void QgsProjectParser::layersAndStylesCapabilities( QDomElement& parentElement,
     return;
   }
 
+  if ( fullProjectSettings )
+  {
+    addDrawingOrder( parentElement, doc );
+  }
+
   QMap<QString, QgsMapLayer *> layerMap;
 
   foreach ( const QDomElement &elem, mProjectLayerElements )
@@ -1701,3 +1706,51 @@ QgsRectangle QgsProjectParser::layerBoundingBoxInProjectCRS( const QDomElement&
   BBox = t.transformBoundingBox( BBox );
   return BBox;
 }
+
+void QgsProjectParser::addDrawingOrder( QDomElement& parentElem, QDomDocument& doc ) const
+{
+  if ( !mXMLDoc )
+  {
+    return;
+  }
+
+  //find legend section
+  QDomElement legendElement = mXMLDoc->documentElement().firstChildElement( "legend" );
+  if ( legendElement.isNull() )
+  {
+    return;
+  }
+
+  QStringList layerList;
+
+  bool useDrawingOrder = ( legendElement.attribute( "updateDrawingOrder" ) == "false" );
+  QDomNodeList layerNodeList = legendElement.elementsByTagName( "legendlayer" );
+  if ( !useDrawingOrder ) //bottom to top
+  {
+    for ( int i = 0; i < layerNodeList.size(); ++i )
+    {
+      layerList.prepend( layerNodeList.at( i ).toElement().attribute( "name" ) );
+    }
+  }
+  else
+  {
+    QVector<QString> orderedLayerNames;
+    orderedLayerNames.resize( layerNodeList.size() );
+    for ( int i = 0; i < layerNodeList.size(); ++i )
+    {
+      QString layerName = layerNodeList.at( i ).toElement().attribute( "name" );
+      int order = layerNodeList.at( i ).toElement().attribute( "drawingOrder" ).toInt();
+      orderedLayerNames[order] = layerName;
+    }
+
+    QVector<QString>::const_iterator vectorIt = orderedLayerNames.constBegin();
+    for ( ; vectorIt != orderedLayerNames.constEnd(); ++vectorIt )
+    {
+      layerList.prepend( *vectorIt );
+    }
+  }
+  QDomElement layerDrawingOrderElem = doc.createElement( "LayerDrawingOrder" );
+  QDomText drawingOrderText = doc.createTextNode( layerList.join( "," ) );
+  layerDrawingOrderElem.appendChild( drawingOrderText );
+  parentElem.appendChild( layerDrawingOrderElem );
+}
diff --git a/src/mapserver/qgsprojectparser.h b/src/mapserver/qgsprojectparser.h
@@ -176,6 +176,8 @@ class QgsProjectParser: public QgsConfigParser
     void setSelectionColor();
     /**Reads maxWidth / maxHeight from project and sets it to QgsConfigParser::mMaxWidth / mMaxHeight*/
     void setMaxWidthHeight();
+    /**Reads layer drawing order from the legend section of the project file and appends it to the parent elemen (usually the <Capability> element)*/
+    void addDrawingOrder( QDomElement& parentElem, QDomDocument& doc ) const;
 };
 
 #endif // QGSPROJECTPARSER_H