First try with EPSG ID, then proj4 matching, when reading CRS from project file

homann · homann · commit 28a46c8cb408 · 2009-08-26T19:59:50.000Z
git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@11516 c8812cc2-4d05-0410-92ff-de0c093fc19c
diff --git a/src/core/qgscoordinatereferencesystem.cpp b/src/core/qgscoordinatereferencesystem.cpp
@@ -930,60 +930,73 @@ bool QgsCoordinateReferenceSystem::readXML( QDomNode & theNode )
 
   if ( ! srsNode.isNull() )
   {
-    QDomNode myNode = srsNode.namedItem( "proj4" );
+    QDomNode myNode = srsNode.namedItem( "epsg" );
     QDomElement myElement = myNode.toElement();
 
-    if ( createFromProj4( myElement.text() ) )
+    if ( createFromEpsg( myElement.text().toLong() ) )
     {
-      // createFromProj4() sets everything, inlcuding map units
-      QgsDebugMsg( "Setting from proj4 string" );
+      // createFromEpsg() sets everything, inlcuding map units
+      QgsDebugMsg( "Setting from EPSG id" );
     }
     else
     {
-      QgsDebugMsg( "Setting from elements one by one" );
+      myNode = srsNode.namedItem( "proj4" );
+      myElement = myNode.toElement();
 
-      setProj4String( myElement.text() );
+      if ( createFromProj4( myElement.text() ) )
+      {
+        // createFromProj4() sets everything, inlcuding map units
+        QgsDebugMsg( "Setting from proj4 string" );
+      }
+      else
+      {
+        QgsDebugMsg( "Setting from elements one by one" );
 
-      myNode = srsNode.namedItem( "srsid" );
-      myElement = myNode.toElement();
-      setInternalId( myElement.text().toLong() );
+        myNode = srsNode.namedItem( "proj4" );
+        myElement = myNode.toElement();
+        setProj4String( myElement.text() );
 
-      myNode = srsNode.namedItem( "srid" );
-      myElement = myNode.toElement();
-      setSrid( myElement.text().toLong() );
+        myNode = srsNode.namedItem( "srsid" );
+        myElement = myNode.toElement();
+        setInternalId( myElement.text().toLong() );
 
-      myNode = srsNode.namedItem( "epsg" );
-      myElement = myNode.toElement();
-      setEpsg( myElement.text().toLong() );
+        myNode = srsNode.namedItem( "srid" );
+        myElement = myNode.toElement();
+        setSrid( myElement.text().toLong() );
 
-      myNode = srsNode.namedItem( "description" );
-      myElement = myNode.toElement();
-      setDescription( myElement.text() );
+        myNode = srsNode.namedItem( "epsg" );
+        myElement = myNode.toElement();
+        setEpsg( myElement.text().toLong() );
 
-      myNode = srsNode.namedItem( "projectionacronym" );
-      myElement = myNode.toElement();
-      setProjectionAcronym( myElement.text() );
+        myNode = srsNode.namedItem( "description" );
+        myElement = myNode.toElement();
+        setDescription( myElement.text() );
 
-      myNode = srsNode.namedItem( "ellipsoidacronym" );
-      myElement = myNode.toElement();
-      setEllipsoidAcronym( myElement.text() );
+        myNode = srsNode.namedItem( "projectionacronym" );
+        myElement = myNode.toElement();
+        setProjectionAcronym( myElement.text() );
 
-      myNode = srsNode.namedItem( "geographicflag" );
-      myElement = myNode.toElement();
-      if ( myElement.text().compare( "true" ) )
-      {
-        setGeographicFlag( true );
-      }
-      else
-      {
-        setGeographicFlag( false );
-      }
+        myNode = srsNode.namedItem( "ellipsoidacronym" );
+        myElement = myNode.toElement();
+        setEllipsoidAcronym( myElement.text() );
 
-      //make sure the map units have been set
-      setMapUnits();
+        myNode = srsNode.namedItem( "geographicflag" );
+        myElement = myNode.toElement();
+        if ( myElement.text().compare( "true" ) )
+        {
+          setGeographicFlag( true );
+        }
+        else
+        {
+          setGeographicFlag( false );
+        }
 
-      //@TODO this srs needs to be validated!!!
-      mIsValidFlag = true;//shamelessly hard coded for now
+        //make sure the map units have been set
+        setMapUnits();
+
+        //@TODO this srs needs to be validated!!!
+        mIsValidFlag = true;//shamelessly hard coded for now
+      }
     }
   }
   else
