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

@@ -468,9 +468,13 @@ namespace
         return;
       }
       SMESH::SMESH_GroupBase_var aGroup = SMESH::SMESH_GroupBase::_narrow( aMeshItem );
-      if ( aCheckWarn && !aGroup->_is_nil() ) {
+      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());
+        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);

src/SMESHGUI/SMESHGUI_MeshInfo.cxx

@@ -1661,6 +1661,8 @@ SMESHGUI_TreeElemInfo::SMESHGUI_TreeElemInfo( QWidget* parent )
   l->setMargin( 0 );
   l->addWidget( myInfo );
   connect( myInfo, SIGNAL( itemDoubleClicked( QTreeWidgetItem*, int )), this, SLOT( itemDoubleClicked( QTreeWidgetItem*, int )) );
+  connect( myInfo, SIGNAL( itemCollapsed( QTreeWidgetItem* )), this, SLOT( saveExpanded( QTreeWidgetItem* )) );
+  connect( myInfo, SIGNAL( itemExpanded( QTreeWidgetItem* )), this, SLOT( saveExpanded( QTreeWidgetItem* )) );
 }
 
 /*!
@@ -2264,6 +2266,12 @@ QTreeWidgetItem* SMESHGUI_TreeElemInfo::createItem( QTreeWidgetItem* parent, int
       item->setFont( i, f );
   }
 
+  if ( parent && parent->childCount() == 1 && itemDepth( parent ) == 1 )
+  {
+    QString resName = expandedResource( parent );
+    parent->setExpanded( SMESHGUI::resourceMgr()->booleanValue("SMESH", resName, true ));
+  }
+
   item->setExpanded( true );
   return item;
 }
@@ -2295,6 +2303,17 @@ void  SMESHGUI_TreeElemInfo::itemDoubleClicked( QTreeWidgetItem* theItem, int th
   }
 }
 
+void SMESHGUI_TreeElemInfo::saveExpanded( QTreeWidgetItem* theItem )
+{
+  if ( theItem )
+    SMESHGUI::resourceMgr()->setValue("SMESH", expandedResource( theItem ), theItem->isExpanded() );
+}
+
+QString SMESHGUI_TreeElemInfo::expandedResource( QTreeWidgetItem* theItem )
+{
+  return QString("Expanded_") + ( isElements() ? "E_" : "N_" ) + theItem->text(0);
+}
+
 void SMESHGUI_TreeElemInfo::saveInfo( QTextStream &out )
 {
   out << QString( 12, '-' ) << "\n";

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;