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diff --git a/chart2/source/view/inc/VDiagram.hxx b/chart2/source/view/inc/VDiagram.hxx
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+++ b/chart2/source/view/inc/VDiagram.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 <basegfx/range/b2irectangle.hxx>
+#include <com/sun/star/drawing/Direction3D.hpp>
+#include <com/sun/star/awt/Size.hpp>
+#include <com/sun/star/awt/Point.hpp>
+#include <svx/unoshape.hxx>
+#include <rtl/ref.hxx>
+
+namespace com::sun::star::beans { class XPropertySet; }
+namespace com::sun::star::chart2 { class XDiagram; }
+namespace com::sun::star::lang { class XMultiServiceFactory; }
+namespace com::sun::star::drawing { class XShape; }
+
+
+namespace chart
+{
+class Diagram;
+class ShapeFactory;
+
+/** The VDiagram is responsible to generate the visible parts of the Diagram
+that is wall, floor, axes and data series.
+The axes and data series are subobjects which are created and managed by the
+diagram.
+*/
+
+class VDiagram final
+{
+public: //methods
+    VDiagram( const rtl::Reference<::chart::Diagram>& xDiagram,
+              const css::drawing::Direction3D& rPreferredAspectRatio,
+              sal_Int32 nDimension );
+    ~VDiagram();
+
+    void init(
+        const rtl::Reference<SvxShapeGroupAnyD>& xTarget );
+
+    void    createShapes( const css::awt::Point& rPos
+                        , const css::awt::Size& rSize );
+
+    const rtl::Reference<SvxShapeGroupAnyD> &
+            getCoordinateRegion() const { return m_xCoordinateRegionShape; }
+
+    /**
+     * Get current bounding rectangle for the diagram without axes.
+     */
+    basegfx::B2IRectangle getCurrentRectangle() const;
+
+    void    reduceToMinimumSize();
+
+    ::basegfx::B2IRectangle    adjustPosAndSize( const css::awt::Point& rPos
+                                    , const css::awt::Size& rAvailableSize );
+
+    ::basegfx::B2IRectangle    adjustInnerSize( const ::basegfx::B2IRectangle& rConsumedOuterRect );
+
+private: //methods
+    void    createShapes_2d();
+    void    createShapes_3d();
+
+    ::basegfx::B2IRectangle    adjustPosAndSize_2d( const css::awt::Point& rPos
+                        , const css::awt::Size& rAvailableSize );
+    ::basegfx::B2IRectangle    adjustPosAndSize_3d( const css::awt::Point& rPos
+                        , const css::awt::Size& rAvailableSize );
+
+    void    adjustAspectRatio3d( const css::awt::Size& rAvailableSize );
+
+private: //members
+    VDiagram(const VDiagram& rD) = delete;
+
+    rtl::Reference<SvxShapeGroupAnyD>                    m_xTarget;
+
+    // this is the surrounding shape which contains floor, wall and coordinate
+    rtl::Reference<SvxShapeGroupAnyD>   m_xOuterGroupShape;
+    // this is an additional inner shape that represents the coordinate region -  that is - where to place data points
+    rtl::Reference<SvxShapeGroupAnyD>   m_xCoordinateRegionShape;
+    rtl::Reference<SvxShapeRect> m_xWall2D;
+
+    sal_Int32                          m_nDimensionCount;
+    rtl::Reference< ::chart::Diagram > m_xDiagram;
+
+    css::drawing::Direction3D                                  m_aPreferredAspectRatio;
+    css::uno::Reference< css::beans::XPropertySet > m_xAspectRatio3D;
+
+    double m_fXAnglePi;
+    double m_fYAnglePi;
+    double m_fZAnglePi;
+
+    css::awt::Point    m_aAvailablePosIncludingAxes;
+    css::awt::Size     m_aAvailableSizeIncludingAxes;
+
+    css::awt::Point    m_aCurrentPosWithoutAxes;
+    css::awt::Size     m_aCurrentSizeWithoutAxes;
+
+    bool m_bRightAngledAxes;
+};
+
+} //namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */