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diff --git a/chart2/source/inc/RelativeSizeHelper.hxx b/chart2/source/inc/RelativeSizeHelper.hxx
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+++ b/chart2/source/inc/RelativeSizeHelper.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 CHART2_RELATIVESIZEHELPER_HXX
+#define CHART2_RELATIVESIZEHELPER_HXX
+
+#include <com/sun/star/awt/Size.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include "charttoolsdllapi.hxx"
+
+namespace chart
+{
+
+class OOO_DLLPUBLIC_CHARTTOOLS RelativeSizeHelper
+{
+public:
+    static double calculate(
+        double fValue,
+        const ::com::sun::star::awt::Size & rOldReferenceSize,
+        const ::com::sun::star::awt::Size & rNewReferenceSize );
+
+    static void adaptFontSizes(
+        const ::com::sun::star::uno::Reference<
+            ::com::sun::star::beans::XPropertySet > & xTargetProperties,
+        const ::com::sun::star::awt::Size & rOldReferenceSize,
+        const ::com::sun::star::awt::Size & rNewReferenceSize );
+
+private:
+    // not implemented
+    RelativeSizeHelper();
+};
+
+} //  namespace chart
+
+// CHART2_RELATIVESIZEHELPER_HXX
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */