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diff --git a/chart2/source/view/inc/LegendEntryProvider.hxx b/chart2/source/view/inc/LegendEntryProvider.hxx
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+++ b/chart2/source/view/inc/LegendEntryProvider.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 .
+ */
+#pragma once
+
+#include <com/sun/star/chart2/LegendPosition.hpp>
+#include <com/sun/star/chart2/XFormattedString2.hpp>
+#include <com/sun/star/awt/Size.hpp>
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/uno/Sequence.h>
+#include <rtl/ref.hxx>
+#include <svx/unoshape.hxx>
+#include <vector>
+
+namespace chart { class ChartModel; }
+namespace com::sun::star::beans { class XPropertySet; }
+namespace com::sun::star::drawing { class XShape; }
+namespace com::sun::star::drawing { class XShapes; }
+namespace com::sun::star::lang { class XMultiServiceFactory; }
+namespace com::sun::star::uno { class XComponentContext; }
+
+namespace chart
+{
+
+enum class LegendSymbolStyle
+{
+    /** A square box with border.
+     */
+    Box,
+
+    /** A line like with a symbol.
+     */
+    Line,
+
+    /** A bordered circle which has the same bounding-box as the
+        <member>BOX</member>.
+     */
+    Circle
+};
+
+struct ViewLegendEntry
+{
+    /** The legend symbol that represents a data series or other
+        information contained in the legend
+     */
+    rtl::Reference< SvxShapeGroup > xSymbol;
+
+    /** The descriptive text for a legend entry.
+     */
+    css::uno::Sequence<
+        css::uno::Reference< css::chart2::XFormattedString2 > >  aLabel;
+};
+
+class LegendEntryProvider
+{
+public:
+    virtual css::awt::Size getPreferredLegendKeyAspectRatio()=0;
+
+    virtual std::vector< ViewLegendEntry > createLegendEntries(
+            const css::awt::Size& rEntryKeyAspectRatio,
+            css::chart2::LegendPosition eLegendPosition,
+            const css::uno::Reference< css::beans::XPropertySet >& xTextProperties,
+            const rtl::Reference<SvxShapeGroupAnyD>& xTarget,
+            const css::uno::Reference< css::uno::XComponentContext >& xContext,
+            ChartModel& rModel
+                ) = 0;
+
+protected:
+    ~LegendEntryProvider() {}
+};
+
+} //  namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */