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diff --git a/canvas/source/vcl/outdevprovider.hxx b/canvas/source/vcl/outdevprovider.hxx
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+/*************************************************************************
+ *
+ * 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_OUTDEVPROVIDER_HXX
+#define _VCLCANVAS_OUTDEVPROVIDER_HXX
+
+#include <sal/types.h>
+#include <boost/shared_ptr.hpp>
+
+
+class OutputDevice;
+
+namespace vclcanvas
+{
+    /* Definition of OutDevProvider interface */
+
+    /** Implementers of this interface provide the CanvasHelper
+        with its OutputDevice.
+
+        This additional level of indirection was necessary, as the
+        OutputDevice is not an interface. There had to be a mechanism
+        to detect the moment when an OutputDevice is rendered to
+        (e.g. for the BitmapBackBuffer).
+     */
+    class OutDevProvider
+    {
+    public:
+        virtual ~OutDevProvider() {}
+
+        virtual OutputDevice&       getOutDev() = 0;
+        virtual const OutputDevice& getOutDev() const = 0;
+    };
+
+    typedef ::boost::shared_ptr< OutDevProvider > OutDevProviderSharedPtr;
+}
+
+#endif /* _VCLCANVAS_OUTDEVPROVIDER_HXX */