Do not transform geometries when exporting in json

qgis · Nov 5, 2019 · 15fb672 · 15fb672
1 parent 1865675
commit 15fb672
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Showing 3 changed files with 11 additions and 1 deletion.
diff --git a/src/core/qgsjsonutils.cpp b/src/core/qgsjsonutils.cpp
@@ -107,7 +107,7 @@ json QgsJsonExporter::exportFeatureToJsonObject( const QgsFeature &feature, cons
       try
       {
         QgsGeometry transformed = geom;
-        if ( transformed.transform( mTransform ) == 0 )
+        if ( mTransformGeometries && transformed.transform( mTransform ) == 0 )
           geom = transformed;
       }
       catch ( QgsCsException &cse )

diff --git a/src/core/qgsjsonutils.h b/src/core/qgsjsonutils.h
@@ -153,6 +153,13 @@ class CORE_EXPORT QgsJsonExporter
      */
     QgsCoordinateReferenceSystem sourceCrs() const;
 
+    /**
+     * Sets whether geometries should be transformed in EPSG 4326 (default
+     * behavior) or just keep as it is.
+     * \since QGIS 3.10
+     */
+    void setTransformGeometries( bool activate ) { mTransformGeometries = activate; }
+
     /**
      * Sets the list of attributes to include in the JSON exports.
      * \param attributes list of attribute indexes, or an empty list to include all
@@ -270,6 +277,8 @@ class CORE_EXPORT QgsJsonExporter
     QgsCoordinateTransform mTransform;
 
     bool mAttributeDisplayName = false;
+
+    bool mTransformGeometries = true;
 };
 
 /**

diff --git a/src/server/services/wms/qgswmsrenderer.cpp b/src/server/services/wms/qgswmsrenderer.cpp
@@ -2219,6 +2219,7 @@ namespace QgsWms
         exporter.setAttributeDisplayName( true );
         exporter.setAttributes( attributes );
         exporter.setIncludeGeometry( withGeometry );
+        exporter.setTransformGeometries( false );
 
         for ( const auto &feature : qgis::as_const( features ) )
         {