Fix zoom to layer if otf-reprojection is enabled (ticket #2148)

git-svn-id: http://svn.osgeo.org/qgis/trunk@12318 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/app/legend/qgslegend.cpp

@@ -1581,6 +1581,11 @@ void QgsLegend::makeToTopLevelItem()
 
 void QgsLegend::legendLayerZoom()
 {
+  if(!mMapCanvas)
+  {
+    return;
+  }
+
   //find current Layer
   QgsLegendLayer* currentLayer = dynamic_cast<QgsLegendLayer *>( currentItem() );
   if ( !currentLayer )
@@ -1589,6 +1594,16 @@ void QgsLegend::legendLayerZoom()
   QgsMapLayer* theLayer = currentLayer->layer();
   QgsRectangle extent = theLayer->extent();
 
+  //transform extent if otf-projection is on
+  if(mMapCanvas->hasCrsTransformEnabled())
+  {
+    QgsMapRenderer* renderer = mMapCanvas->mapRenderer();
+    if(renderer)
+    {
+      extent = renderer->layerExtentToOutputExtent(theLayer, extent);
+    }
+  }
+
   // Increase bounding box with 5%, so that layer is a bit inside the borders
   extent.scale( 1.05 );