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diff --git a/toolkit/source/controls/table/tablegeometry.hxx b/toolkit/source/controls/table/tablegeometry.hxx
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+++ b/toolkit/source/controls/table/tablegeometry.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <controls/table/tabletypes.hxx>
+#include <tools/gen.hxx>
+
+namespace svt::table
+{
+
+
+    class TableControl_Impl;
+
+
+    //= TableGeometry
+
+    class TableGeometry
+    {
+    protected:
+        const TableControl_Impl&    m_rControl;
+        const tools::Rectangle&            m_rBoundaries;
+        tools::Rectangle                   m_aRect;
+
+    protected:
+        TableGeometry(
+                const TableControl_Impl& _rControl,
+                const tools::Rectangle& _rBoundaries
+            )
+            :m_rControl( _rControl )
+            ,m_rBoundaries( _rBoundaries )
+            ,m_aRect( _rBoundaries )
+        {
+        }
+
+    public:
+        // attribute access
+        const TableControl_Impl&    getControl() const      { return m_rControl; }
+
+        // status
+        const tools::Rectangle&    getRect() const { return m_aRect; }
+        bool                isValid() const { return !m_aRect.GetIntersection( m_rBoundaries ).IsEmpty(); }
+    };
+
+
+    //= TableRowGeometry
+
+    class TableRowGeometry final : public TableGeometry
+    {
+    public:
+        TableRowGeometry(
+            TableControl_Impl const & _rControl,
+            tools::Rectangle const & _rBoundaries,
+            RowPos const _nRow,
+            bool const i_allowVirtualRows = false
+                // allow rows >= getRowCount()?
+        );
+
+        // status
+        RowPos              getRow() const  { return m_nRowPos; }
+        // operations
+        bool                moveDown();
+
+    private:
+        void    impl_initRect();
+        bool    impl_isValidRow( RowPos const i_row ) const;
+
+        RowPos  m_nRowPos;
+        bool    m_bAllowVirtualRows;
+    };
+
+
+    //= TableColumnGeometry
+
+    class TableColumnGeometry final : public TableGeometry
+    {
+    public:
+        TableColumnGeometry(
+            TableControl_Impl const & _rControl,
+            tools::Rectangle const & _rBoundaries,
+            ColPos const _nCol
+        );
+
+        // status
+        ColPos              getCol() const  { return m_nColPos; }
+        // operations
+        bool                moveRight();
+
+    private:
+        void    impl_initRect();
+        bool    impl_isValidColumn( ColPos const i_column ) const;
+
+        ColPos  m_nColPos;
+    };
+
+
+    //= TableCellGeometry
+
+    /** a helper representing geometry information of a cell
+    */
+    class TableCellGeometry
+    {
+    private:
+        TableRowGeometry    m_aRow;
+        TableColumnGeometry m_aCol;
+
+    public:
+        TableCellGeometry(
+                TableControl_Impl const & _rControl,
+                tools::Rectangle const & _rBoundaries,
+                ColPos const _nCol,
+                RowPos const _nRow
+            )
+            :m_aRow( _rControl, _rBoundaries, _nRow, false/*allowVirtualCells*/ )
+            ,m_aCol( _rControl, _rBoundaries, _nCol )
+        {
+        }
+
+        TableCellGeometry(
+                const TableRowGeometry& _rRow,
+                ColPos _nCol
+            )
+            :m_aRow( _rRow )
+            ,m_aCol( _rRow.getControl(), _rRow.getRect(), _nCol )
+        {
+        }
+
+        tools::Rectangle   getRect() const     { return m_aRow.getRect().GetIntersection( m_aCol.getRect() ); }
+        ColPos      getColumn() const   { return m_aCol.getCol(); }
+        bool        isValid() const     { return !getRect().IsEmpty(); }
+
+        bool        moveRight()     {return m_aCol.moveRight(); }
+    };
+
+
+} // namespace svt::table
+
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */