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diff --git a/canvas/source/vcl/backbuffer.hxx b/canvas/source/vcl/backbuffer.hxx
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+++ b/canvas/source/vcl/backbuffer.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_CANVAS_SOURCE_VCL_BACKBUFFER_HXX
+#define INCLUDED_CANVAS_SOURCE_VCL_BACKBUFFER_HXX
+
+#include <vcl/virdev.hxx>
+
+#include "outdevprovider.hxx"
+
+#include <memory>
+
+namespace vclcanvas
+{
+    /// Background buffer abstraction
+    class BackBuffer : public OutDevProvider
+    {
+    public:
+        /** Create a backbuffer for given reference device
+
+            @param bMonochromeBuffer
+            When false, default depth of reference device is
+            chosen. When true, the buffer will be monochrome, i.e. one
+            bit deep.
+         */
+        BackBuffer( const OutputDevice& rRefDevice,
+                    bool                bMonochromeBuffer=false );
+        virtual ~BackBuffer() override;
+
+        virtual OutputDevice&       getOutDev() override;
+        virtual const OutputDevice& getOutDev() const override;
+
+        void setSize( const ::Size& rNewSize );
+
+    private:
+        VclPtr< VirtualDevice > maVDev;
+    };
+
+    typedef std::shared_ptr< BackBuffer > BackBufferSharedPtr;
+}
+
+#endif // INCLUDED_CANVAS_SOURCE_VCL_BACKBUFFER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */