allow to use view cube during feature creation/edition

diff --git a/src/OCCViewer/OCCViewer_ViewModel.cxx b/src/OCCViewer/OCCViewer_ViewModel.cxx
index f5711547926e9ccb7ef73daa14b7d4997299e080..33503afc444d1d7263b6a8c2a865d8e3f90b840d 100644 (file)
--- a/src/OCCViewer/OCCViewer_ViewModel.cxx
+++ b/src/OCCViewer/OCCViewer_ViewModel.cxx
@@ -393,8 +393,20 @@ void OCCViewer_Viewer::onMouseRelease(SUIT_ViewWindow* theWindow, QMouseEvent* t
 
     if (aHasShift && myMultiSelectionEnabled)
       myAISContext->ShiftSelect( Standard_True );
-    else 
-      myAISContext->Select( Standard_True );
+    else {
+      AIS_StatusOfPick sop = myAISContext->Select( Standard_True );
+      if (sop == AIS_SOP_NothingSelected) {
+        // Check whether the ViewCube had been picked to change view orientation
+        // => in this case, we don't want any existing selection in the active widget 
+        //    been cleared
+        Handle(SelectMgr_EntityOwner) anOwner = myAISContext->DetectedOwner();
+        if (!anOwner.IsNull() && anOwner->HasSelectable()) {
+          Handle(SelectMgr_SelectableObject) aSelObj = anOwner->Selectable();
+          if (!aSelObj.IsNull() && aSelObj->IsKind(STANDARD_TYPE(AIS_ViewCube)))
+            return;
+        }
+      }
+    }
     emit selectionChanged();
   }