chart2/source/view/axes/Tickmarks_Equidistant.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #pragma once
  20
  21 #include "Tickmarks.hxx"
  22 #include <memory>
  23
  24 #include <o3tl/safeint.hxx>
  25
  26 namespace chart
  27 {
  28
  29 class EquidistantTickIter : public TickIter
  30 {
  31 public:
  32     EquidistantTickIter( const css::uno::Sequence< css::uno::Sequence< double > >& rTicks
  33                 , const ExplicitIncrementData& rIncrement
  34                 , sal_Int32 nMaxDepth );
  35     EquidistantTickIter( TickInfoArraysType& rTickInfos
  36             , const ExplicitIncrementData& rIncrement
  37             , sal_Int32 nMaxDepth );
  38     virtual ~EquidistantTickIter() override;
  39
  40     double*     firstValue();
  41     double*     nextValue();
  42
  43     virtual TickInfo*   firstInfo() override;
  44     virtual TickInfo*   nextInfo() override;
  45
  46 private: //methods
  47     sal_Int32   getIntervalCount( sal_Int32 nDepth );
  48     bool        isAtLastPartTick();
  49
  50     void        initIter( sal_Int32 nMaxDepth );
  51     sal_Int32   getStartDepth() const;
  52
  53     bool        gotoFirst();
  54     bool        gotoNext();
  55
  56     double      getTickValue(sal_Int32 nDepth, sal_Int32 nIndex) const
  57                 {
  58                     if(m_pSimpleTicks)
  59                         return (*m_pSimpleTicks)[nDepth][nIndex];
  60                     else
  61                     {
  62                         if ((*m_pInfoTicks)[nDepth].size() <= o3tl::make_unsigned(nIndex))
  63                             return std::numeric_limits<double>::max();
  64                         return (((*m_pInfoTicks)[nDepth])[nIndex]).fScaledTickValue;
  65                     }
  66                 }
  67     sal_Int32   getTickCount( sal_Int32 nDepth ) const
  68                 {
  69                     if(m_pSimpleTicks)
  70                         return (*m_pSimpleTicks)[nDepth].getLength();
  71                     else
  72                         return (*m_pInfoTicks)[nDepth].size();
  73                 }
  74     sal_Int32   getMaxDepth() const
  75                 {
  76                     if(m_pSimpleTicks)
  77                         return (*m_pSimpleTicks).getLength()-1;
  78                     else
  79                         return (*m_pInfoTicks).size()-1;
  80                 }
  81
  82 private: //member
  83     const css::uno::Sequence< css::uno::Sequence< double > >*  m_pSimpleTicks;
  84     TickInfoArraysType*       m_pInfoTicks;
  85     const ExplicitIncrementData& m_rIncrement;
  86     sal_Int32   m_nMaxDepth;
  87     sal_Int32   m_nTickCount;
  88     std::unique_ptr<sal_Int32[]>
  89                 m_pnPositions; //current positions in the different sequences
  90     std::unique_ptr<sal_Int32[]>
  91                 m_pnPreParentCount; //the tickmarks do not start with a major tick always,
  92                                     //the PreParentCount states for each depth how many subtickmarks are available in front of the first parent tickmark
  93     std::unique_ptr<bool[]>
  94                 m_pbIntervalFinished;
  95     sal_Int32   m_nCurrentDepth;
  96     sal_Int32   m_nCurrentPos;
  97     double      m_fCurrentValue;
  98 };
  99
 100 class EquidistantTickFactory
 101 {
 102 public:
 103     EquidistantTickFactory(
 104          ExplicitScaleData aScale
 105         , ExplicitIncrementData aIncrement );
 106     ~EquidistantTickFactory();
 107
 108     void getAllTicks( TickInfoArraysType& rAllTickInfos ) const;
 109     void getAllTicksShifted( TickInfoArraysType& rAllTickInfos ) const;
 110
 111     static double getMinimumAtIncrement( double fMin, const ExplicitIncrementData& rIncrement );
 112     static double getMaximumAtIncrement( double fMax, const ExplicitIncrementData& rIncrement );
 113
 114 private: //methods
 115     void        addSubTicks( sal_Int32 nDepth,
 116                         css::uno::Sequence< css::uno::Sequence< double > >& rParentTicks ) const;
 117     double*     getMajorTick( sal_Int32 nTick ) const;
 118     double*     getMinorTick( sal_Int32 nTick, sal_Int32 nDepth
 119                     , double fStartParentTick, double fNextParentTick ) const;
 120     sal_Int32   getMaxTickCount( sal_Int32 nDepth ) const;
 121     sal_Int32   getTickDepth() const;
 122
 123     bool        isVisible( double fValue ) const;
 124     bool        isWithinOuterBorder( double fScaledValue ) const; //all within the outer major tick marks
 125
 126 private: //member
 127     ExplicitScaleData     m_rScale;
 128     ExplicitIncrementData m_rIncrement;
 129     css::uno::Reference< css::chart2::XScaling > m_xInverseScaling;
 130
 131     //minimum and maximum of the visible range after scaling
 132     double    m_fScaledVisibleMin;
 133     double    m_fScaledVisibleMax;
 134
 135     std::unique_ptr<double[]>
 136               m_pfCurrentValues;
 137     //major-tick positions that may lay outside the visible range but complete partly visible intervals at the borders
 138     double    m_fOuterMajorTickBorderMin;
 139     double    m_fOuterMajorTickBorderMax;
 140     double    m_fOuterMajorTickBorderMin_Scaled;
 141     double    m_fOuterMajorTickBorderMax_Scaled;
 142 };
 143
 144 } //namespace chart
 145
 146 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */