23416: [CEA 2033] Impossible to re-compute a mesh from an hdf

Optimize mesh loading in case of complex shape + a group on geometry
  (SMESHDS_GroupBase.cxx)


+ While MED export, create groups of all balls and 0D elements, if required
  (SMESH_Mesh.cxx)

+ Remember collapsed state of information on elements and nodes in Mesh Information dlg
  (SMESHGUI_MeshInfo)

src/OBJECT/CMakeLists.txt

@@ -20,7 +20,6 @@
 # --- options ---
 # additional include directories
 INCLUDE_DIRECTORIES(
-  ${QT_INCLUDES}
   ${KERNEL_INCLUDE_DIRS}
   ${GUI_INCLUDE_DIRS}
   ${MEDFILE_INCLUDE_DIRS}

src/SMESH/SMESH_Mesh.cxx

@@ -1421,6 +1421,8 @@ void SMESH_Mesh::ExportMED(const char *        file,
     myWriter.AddGroupOfEdges();
     myWriter.AddGroupOfFaces();
     myWriter.AddGroupOfVolumes();
+    myWriter.AddGroupOf0DElems();
+    myWriter.AddGroupOfBalls();
   }
   if ( theAllElemsToGroup )
     myWriter.AddAllToGroup();

src/SMESHDS/SMESHDS_GroupBase.cxx

@@ -124,6 +124,9 @@ int SMESHDS_GroupBase::Extent() const
 
 bool SMESHDS_GroupBase::IsEmpty()
 {
+  if ( myMesh->GetMeshInfo().NbElements( myType ) == 0 )
+    // avoid long iteration over sub-meshes of a complex sub-mesh of a group on geometry
+    return false;
   SMDS_ElemIteratorPtr it = GetElements();
   return ( !it || !it->more() );
 }

src/SMESHFiltersSelection/CMakeLists.txt

@@ -21,7 +21,6 @@
 # additional include directories
 INCLUDE_DIRECTORIES(
   ${CAS_INCLUDE_DIRS}
-  ${QT_INCLUDES}
   ${PYTHON_INCLUDE_DIRS}
   ${VTK_INCLUDE_DIRS}
   ${KERNEL_INCLUDE_DIRS}

src/SMESHGUI/SMESHGUI.cxx

@@ -467,10 +467,14 @@ namespace
                                   QObject::tr( "SMESH_BAD_MESH_SELECTION" ));
         return;
       }
-      SMESH::SMESH_GroupBase_var aGroup   = SMESH::SMESH_GroupBase::_narrow( aMeshItem );
-      if ( aCheckWarn && !aGroup->_is_nil() ) {
-        QMessageBox msgBox(SUIT_MessageBox::Warning,QObject::tr("SMESH_WRN_WARNING"),
-                            QObject::tr("SMESH_EXPORT_ONLY_GPOUP"),QMessageBox::StandardButton::NoButton, SMESHGUI::desktop());
+      SMESH::SMESH_GroupBase_var aGroup = SMESH::SMESH_GroupBase::_narrow( aMeshItem );
+      if ( aCheckWarn && !aGroup->_is_nil() )
+      {
+        QMessageBox msgBox(SUIT_MessageBox::Warning,
+                           QObject::tr("SMESH_WRN_WARNING"),
+                           QObject::tr("SMESH_EXPORT_ONLY_GPOUP"),
+                           QMessageBox::StandardButton::NoButton,
+                           SMESHGUI::desktop());
         QCheckBox dontShowCheckBox(QObject::tr("SMESH_WRN_SHOW_DLG_CHECKBOX"));
         msgBox.addButton(QMessageBox::Ok);
         msgBox.addButton(QMessageBox::Cancel);
@@ -481,12 +485,12 @@ namespace
         lt->addWidget(btnbox, lt->rowCount(), 0, lt->rowCount(), lt->columnCount());
         if(msgBox.exec() == QMessageBox::Ok)
         {
-            if(dontShowCheckBox.checkState() == Qt::Checked)
-            {
-              if ( resMgr )
-                resMgr->setValue( "SMESH", "show_warning", false);
-            }
-            aCheckWarn = false;
+          if(dontShowCheckBox.checkState() == Qt::Checked)
+          {
+            if ( resMgr )
+              resMgr->setValue( "SMESH", "show_warning", false);
+          }
+          aCheckWarn = false;
         }
         else
           return;

src/SMESHGUI/SMESHGUI_MeshInfo.h

@@ -242,9 +242,11 @@ protected:
 
 private slots:
   void             itemDoubleClicked( QTreeWidgetItem*, int );
+  void             saveExpanded( QTreeWidgetItem* );
   
 private:
   QTreeWidgetItem* createItem( QTreeWidgetItem* = 0, int = 0 );
+  QString          expandedResource( QTreeWidgetItem* );
   
 private:
   QTreeWidget*     myInfo;

src/StdMeshers/StdMeshers_ProjectionUtils.cxx

@@ -847,8 +847,8 @@ bool StdMeshers_ProjectionUtils::FindSubShapeAssociation(const TopoDS_Shape& the
       }
       // Associate shells
       //
-      int nbFaces1 = SMESH_MesherHelper:: Count( shell1, TopAbs_FACE, 0 );
-      int nbFaces2 = SMESH_MesherHelper:: Count( shell2, TopAbs_FACE, 0 );
+      int nbFaces1 = SMESH_MesherHelper::Count( shell1, TopAbs_FACE, 0 );
+      int nbFaces2 = SMESH_MesherHelper::Count( shell2, TopAbs_FACE, 0 );
       if ( nbFaces1 != nbFaces2 )
         RETURN_BAD_RESULT("Different nb of faces found for shells");
       if ( nbFaces1 > 0 ) {