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diff --git a/canvas/source/vcl/spritedevicehelper.hxx b/canvas/source/vcl/spritedevicehelper.hxx
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+++ b/canvas/source/vcl/spritedevicehelper.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_SPRITEDEVICEHELPER_HXX
+#define INCLUDED_CANVAS_SOURCE_VCL_SPRITEDEVICEHELPER_HXX
+
+#include <com/sun/star/awt/Rectangle.hpp>
+
+#include "backbuffer.hxx"
+#include "devicehelper.hxx"
+
+
+/* Definition of DeviceHelper class */
+
+namespace vclcanvas
+{
+    class SpriteDeviceHelper : public DeviceHelper
+    {
+    public:
+        SpriteDeviceHelper();
+
+        void init( const OutDevProviderSharedPtr& rOutDev );
+
+        /// Dispose all internal references
+        void disposing();
+
+        bool  showBuffer( bool bWindowVisible, bool bUpdateAll );
+        bool  switchBuffer( bool bWindowVisible, bool bUpdateAll );
+
+        css::uno::Any isAccelerated() const;
+        css::uno::Any getDeviceHandle() const;
+        css::uno::Any getSurfaceHandle() const;
+
+        void dumpScreenContent() const;
+        const BackBufferSharedPtr& getBackBuffer() const { return mpBackBuffer; }
+
+        void notifySizeUpdate( const css::awt::Rectangle& rBounds );
+
+    private:
+        /// This buffer holds the background content for all associated canvases
+        BackBufferSharedPtr     mpBackBuffer;
+    };
+}
+
+#endif // INCLUDED_CANVAS_SOURCE_VCL_SPRITEDEVICEHELPER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */