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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 -*- */
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * 
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef _VCLCANVAS_SPRITEDEVICEHELPER_HXX
+#define _VCLCANVAS_SPRITEDEVICEHELPER_HXX
+
+#include <com/sun/star/awt/Rectangle.hpp>
+#include <com/sun/star/awt/XWindow2.hpp>
+#include <com/sun/star/rendering/XGraphicDevice.hpp>
+#include <com/sun/star/rendering/XBufferController.hpp>
+
+#include <vcl/outdev.hxx>
+#include <vcl/window.hxx>
+
+#include "backbuffer.hxx"
+#include "devicehelper.hxx"
+
+#include <boost/utility.hpp>
+
+
+/* Definition of DeviceHelper class */
+
+namespace vclcanvas
+{
+    class SpriteCanvas;
+    class SpriteCanvasHelper;
+
+    class SpriteDeviceHelper : public DeviceHelper
+    {
+    public:
+        SpriteDeviceHelper();
+
+        void init( const OutDevProviderSharedPtr& rOutDev );
+
+        /// Dispose all internal references
+        void disposing();
+
+        ::sal_Int32 createBuffers( ::sal_Int32 nBuffers );
+        void 		destroyBuffers(  );
+        ::sal_Bool  showBuffer( bool bWindowVisible, ::sal_Bool bUpdateAll );
+        ::sal_Bool  switchBuffer( bool bWindowVisible, ::sal_Bool bUpdateAll );
+
+        ::com::sun::star::uno::Any isAccelerated() const;
+        ::com::sun::star::uno::Any getDeviceHandle() const;
+        ::com::sun::star::uno::Any getSurfaceHandle() const;
+
+        void dumpScreenContent() const;
+        BackBufferSharedPtr getBackBuffer() const { return mpBackBuffer; }
+
+        void notifySizeUpdate( const ::com::sun::star::awt::Rectangle& rBounds );
+
+    private:
+        /// This buffer holds the background content for all associated canvases
+        BackBufferSharedPtr     mpBackBuffer;
+    };
+}
+
+#endif /* _VCLCANVAS_SPRITEDEVICEHELPER_HXX */
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */