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diff --git a/chart2/source/view/axes/Tickmarks.hxx b/chart2/source/view/axes/Tickmarks.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 .
+ */
+#ifndef INCLUDED_CHART2_SOURCE_VIEW_AXES_TICKMARKS_HXX
+#define INCLUDED_CHART2_SOURCE_VIEW_AXES_TICKMARKS_HXX
+
+#include <chartview/ExplicitScaleValues.hxx>
+#include <basegfx/vector/b2dvector.hxx>
+#include <com/sun/star/drawing/PointSequenceSequence.hpp>
+
+#include <vector>
+
+namespace chart { struct AxisProperties; }
+namespace chart { struct TickmarkProperties; }
+namespace com::sun::star::chart2 { class XScaling; }
+namespace com::sun::star::drawing { class XShape; }
+
+namespace chart {
+
+struct TickInfo
+{
+    double      fScaledTickValue;
+    css::uno::Reference<css::chart2::XScaling> xInverseScaling;
+
+    ::basegfx::B2DVector  aTickScreenPosition;
+    bool        bPaintIt;
+
+    css::uno::Reference<css::drawing::XShape> xTextShape;
+
+    OUString aText;//used only for complex categories so far
+    sal_Int32 nFactorForLimitedTextWidth;//categories in higher levels of complex categories can have more place than a single simple category
+
+//methods:
+    TickInfo() = delete;
+    explicit TickInfo( const css::uno::Reference<css::chart2::XScaling>& xInverse );
+
+    /**
+     * Return a value associated with the tick mark. It's normally an original
+     * value from the data source, or 1-based integer index in case the axis
+     * is a category axis.
+     */
+    double getUnscaledTickValue() const;
+    sal_Int32 getScreenDistanceBetweenTicks( const TickInfo& rOherTickInfo ) const;
+};
+
+typedef std::vector<TickInfo>           TickInfoArrayType;
+typedef std::vector<TickInfoArrayType>  TickInfoArraysType;
+
+class TickIter
+{
+public:
+    virtual ~TickIter() {}
+    virtual TickInfo* firstInfo() = 0;
+    virtual TickInfo* nextInfo() = 0;
+};
+
+class PureTickIter : public TickIter
+{
+public:
+    explicit PureTickIter( TickInfoArrayType& rTickInfoVector );
+    virtual ~PureTickIter() override;
+    virtual TickInfo* firstInfo() override;
+    virtual TickInfo* nextInfo() override;
+
+private:
+    TickInfoArrayType& m_rTickVector;
+    TickInfoArrayType::iterator m_aTickIter;
+};
+
+class TickFactory
+{
+public:
+    TickFactory(
+         const ExplicitScaleData& rScale
+        , const ExplicitIncrementData& rIncrement );
+    virtual ~TickFactory();
+
+    void getAllTicks( TickInfoArraysType& rAllTickInfos ) const;
+    void getAllTicksShifted( TickInfoArraysType& rAllTickInfos ) const;
+
+private: //methods
+    bool        isDateAxis() const;
+
+protected: //member
+    ExplicitScaleData     m_rScale;
+    ExplicitIncrementData m_rIncrement;
+    css::uno::Reference< css::chart2::XScaling > m_xInverseScaling;
+
+    //minimum and maximum of the visible range after scaling
+    double    m_fScaledVisibleMin;
+    double    m_fScaledVisibleMax;
+};
+
+class TickFactory2D final : public TickFactory
+{
+public:
+    TickFactory2D(
+        const ExplicitScaleData& rScale
+        , const ExplicitIncrementData& rIncrement
+        , const ::basegfx::B2DVector& rStartScreenPos, const ::basegfx::B2DVector& rEndScreenPos
+        , const ::basegfx::B2DVector& rAxisLineToLabelLineShift );
+
+    virtual ~TickFactory2D() override;
+
+    static sal_Int32    getTickScreenDistance( TickIter& rIter );
+
+    void createPointSequenceForAxisMainLine( css::drawing::PointSequenceSequence& rPoints ) const;
+    void addPointSequenceForTickLine( css::drawing::PointSequenceSequence& rPoints
+                            , sal_Int32 nSequenceIndex
+                            , double fScaledLogicTickValue, double fInnerDirectionSign
+                            , const TickmarkProperties& rTickmarkProperties, bool bPlaceAtLabels ) const;
+    ::basegfx::B2DVector  getDistanceAxisTickToText( const AxisProperties& rAxisProperties
+        , bool bIncludeFarAwayDistanceIfSo = false
+        , bool bIncludeSpaceBetweenTickAndText = true ) const;
+
+    /**
+     * Determine the screen positions of all ticks based on their numeric values.
+     */
+    void updateScreenValues( TickInfoArraysType& rAllTickInfos ) const;
+
+    bool  isHorizontalAxis() const;
+    bool  isVerticalAxis() const;
+    ::basegfx::B2DVector getXaxisStartPos() const;
+
+private:
+    ::basegfx::B2DVector     getTickScreenPosition2D( double fScaledLogicTickValue ) const;
+
+    ::basegfx::B2DVector    m_aAxisStartScreenPosition2D;
+    ::basegfx::B2DVector    m_aAxisEndScreenPosition2D;
+
+    //labels might be positioned high or low on the border of the diagram far away from the axis
+    //add this vector to go from the axis line to the label line (border of the diagram)
+    ::basegfx::B2DVector    m_aAxisLineToLabelLineShift;
+
+    double      m_fStretch_LogicToScreen;
+    double      m_fOffset_LogicToScreen;
+};
+
+} //namespace chart
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */