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diff --git a/include/vcl/mapmod.hxx b/include/vcl/mapmod.hxx
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+++ b/include/vcl/mapmod.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 .
+ */
+
+#ifndef INCLUDED_VCL_MAPMOD_HXX
+#define INCLUDED_VCL_MAPMOD_HXX
+
+#include <vcl/dllapi.h>
+#include <tools/mapunit.hxx>
+#include <o3tl/cow_wrapper.hxx>
+
+#include <ostream>
+
+class Point;
+class Fraction;
+class SvStream;
+
+class SAL_WARN_UNUSED VCL_DLLPUBLIC MapMode
+{
+    friend class        OutputDevice;
+
+public:
+    struct SAL_DLLPRIVATE ImplMapMode;
+
+    MapMode();
+    MapMode( const MapMode& rMapMode );
+    explicit MapMode( MapUnit eUnit );
+    MapMode( MapUnit eUnit, const Point& rLogicOrg,
+        const Fraction& rScaleX, const Fraction& rScaleY );
+    ~MapMode();
+
+    void            SetMapUnit( MapUnit eUnit );
+    MapUnit         GetMapUnit() const;
+
+    void            SetOrigin( const Point& rOrigin );
+    const Point&    GetOrigin() const;
+
+    void            SetScaleX( const Fraction& rScaleX );
+    const Fraction& GetScaleX() const;
+    void            SetScaleY( const Fraction& rScaleY );
+    const Fraction& GetScaleY() const;
+
+    MapMode&        operator=( const MapMode& rMapMode );
+    MapMode&        operator=( MapMode&& rMapMode );
+    bool            operator==( const MapMode& rMapMode ) const;
+    bool            operator!=( const MapMode& rMapMode ) const
+    {
+        return !(MapMode::operator==( rMapMode ));
+    }
+    bool            IsDefault() const;
+
+    // Compute value usable as hash.
+    size_t          GetHashValue() const;
+
+    // tdf#117984 needs to be thread-safe due to being used e.g. in Bitmaps
+    // vcl::ScopedBitmapAccess in parallelized 3D renderer
+    typedef o3tl::cow_wrapper< ImplMapMode, o3tl::ThreadSafeRefCountingPolicy > ImplType;
+
+    // If only the map unit is set.
+    bool IsSimple() const;
+
+private:
+    ImplType        mpImplMapMode;
+};
+
+template<typename charT, typename traits>
+inline std::basic_ostream<charT, traits> & operator <<(
+    std::basic_ostream<charT, traits> & rStream, const MapMode& rMode)
+{
+    rStream << "MapMode(" << static_cast<unsigned>(rMode.GetMapUnit()) << ",(" << rMode.GetScaleX() << "," << rMode.GetScaleY() << ")@(" << rMode.GetOrigin() << "))";
+    return rStream;
+}
+
+bool TooLargeScaleForMapMode(const Fraction& rScale, int nDPI);
+
+#endif // INCLUDED_VCL_MAPMOD_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */