chart2/source/view/axes/DateScaling.cxx

   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
  20 #include "DateScaling.hxx"
  21 #include <com/sun/star/chart/TimeUnit.hpp>
  22 #include <rtl/math.hxx>
  23 #include <com/sun/star/uno/RuntimeException.hpp>
  24 #include <cppuhelper/supportsservice.hxx>
  25
  26 namespace
  27 {
  28
  29 static const char lcl_aServiceName_DateScaling[] = "com.sun.star.chart2.DateScaling";
  30 static const char lcl_aServiceName_InverseDateScaling[] = "com.sun.star.chart2.InverseDateScaling";
  31
  32 static const double lcl_fNumberOfMonths = 12.0;//todo: this needs to be offered by basic tools Date class if it should be more generic
  33 }
  34
  35 namespace chart
  36 {
  37 using namespace ::com::sun::star;
  38 using namespace ::com::sun::star::chart2;
  39 using ::com::sun::star::chart::TimeUnit::DAY;
  40 using ::com::sun::star::chart::TimeUnit::MONTH;
  41 using ::com::sun::star::chart::TimeUnit::YEAR;
  42
  43 DateScaling::DateScaling( const Date& rNullDate, sal_Int32 nTimeUnit, bool bShifted )
  44         : m_aNullDate( rNullDate )
  45         , m_nTimeUnit( nTimeUnit )
  46         , m_bShifted( bShifted )
  47 {
  48 }
  49
  50 DateScaling::~DateScaling()
  51 {
  52 }
  53
  54 double SAL_CALL DateScaling::doScaling( double value )
  55 {
  56     double fResult(value);
  57     if( ::rtl::math::isNan( value ) || ::rtl::math::isInf( value ) )
  58         ::rtl::math::setNan( & fResult );
  59     else
  60     {
  61         Date aDate(m_aNullDate);
  62         aDate.AddDays(::rtl::math::approxFloor(value));
  63         switch( m_nTimeUnit )
  64         {
  65             case DAY:
  66                 fResult = value;
  67                 if(m_bShifted)
  68                     fResult+=0.5;
  69                 break;
  70             case YEAR:
  71             case MONTH:
  72             default:
  73                 fResult = aDate.GetYear();
  74                 fResult *= lcl_fNumberOfMonths;//assuming equal count of months in each year
  75                 fResult += aDate.GetMonth();
  76
  77                 double fDayOfMonth = aDate.GetDay();
  78                 fDayOfMonth -= 1.0;
  79                 double fDaysInMonth = aDate.GetDaysInMonth();
  80                 fResult += fDayOfMonth/fDaysInMonth;
  81                 if(m_bShifted)
  82                 {
  83                     if( m_nTimeUnit==YEAR )
  84                         fResult += 0.5*lcl_fNumberOfMonths;
  85                     else
  86                         fResult += 0.5;
  87                 }
  88                 break;
  89         }
  90     }
  91     return fResult;
  92 }
  93
  94 uno::Reference< XScaling > SAL_CALL DateScaling::getInverseScaling()
  95 {
  96     return new InverseDateScaling( m_aNullDate, m_nTimeUnit, m_bShifted );
  97 }
  98
  99 OUString SAL_CALL DateScaling::getServiceName()
 100 {
 101     return OUString(lcl_aServiceName_DateScaling);
 102 }
 103
 104 OUString SAL_CALL DateScaling::getImplementationName()
 105 {
 106     return OUString(lcl_aServiceName_DateScaling);
 107 }
 108
 109 sal_Bool SAL_CALL DateScaling::supportsService( const OUString& rServiceName )
 110 {
 111     return cppu::supportsService(this, rServiceName);
 112 }
 113
 114 css::uno::Sequence< OUString > SAL_CALL DateScaling::getSupportedServiceNames()
 115 {
 116     return { lcl_aServiceName_DateScaling };
 117 }
 118
 119 InverseDateScaling::InverseDateScaling( const Date& rNullDate, sal_Int32 nTimeUnit, bool bShifted )
 120         : m_aNullDate( rNullDate )
 121         , m_nTimeUnit( nTimeUnit )
 122         , m_bShifted( bShifted )
 123 {
 124 }
 125
 126 InverseDateScaling::~InverseDateScaling()
 127 {
 128 }
 129
 130 double SAL_CALL InverseDateScaling::doScaling( double value )
 131 {
 132     double fResult(value);
 133     if( ::rtl::math::isNan( value ) || ::rtl::math::isInf( value ) )
 134         ::rtl::math::setNan( & fResult );
 135     else
 136     {
 137         switch( m_nTimeUnit )
 138         {
 139             case DAY:
 140                 if(m_bShifted)
 141                     value -= 0.5;
 142                 fResult = value;
 143                 break;
 144             case YEAR:
 145             case MONTH:
 146             default:
 147                 //Date aDate(m_aNullDate);
 148                 if(m_bShifted)
 149                 {
 150                     if( m_nTimeUnit==YEAR )
 151                         value -= 0.5*lcl_fNumberOfMonths;
 152                     else
 153                         value -= 0.5;
 154                 }
 155                 Date aDate( Date::EMPTY );
 156                 double fYear = ::rtl::math::approxFloor(value/lcl_fNumberOfMonths);
 157                 double fMonth = ::rtl::math::approxFloor(value-(fYear*lcl_fNumberOfMonths));
 158                 if( fMonth==0.0 )
 159                 {
 160                     fYear--;
 161                     fMonth=12.0;
 162                 }
 163                 aDate.SetYear( static_cast<sal_uInt16>(fYear) );
 164                 aDate.SetMonth( static_cast<sal_uInt16>(fMonth) );
 165                 aDate.SetDay( 1 );
 166                 double fMonthCount = (fYear*lcl_fNumberOfMonths)+fMonth;
 167                 double fDay = (value-fMonthCount)*aDate.GetDaysInMonth();
 168                 fDay += 1.0;
 169                 aDate.SetDay( static_cast<sal_uInt16>(::rtl::math::round(fDay)) );
 170                 fResult = aDate - m_aNullDate;
 171                 break;
 172         }
 173     }
 174     return fResult;
 175 }
 176
 177 uno::Reference< XScaling > SAL_CALL InverseDateScaling::getInverseScaling()
 178 {
 179     return new DateScaling( m_aNullDate, m_nTimeUnit, m_bShifted );
 180 }
 181
 182 OUString SAL_CALL InverseDateScaling::getServiceName()
 183 {
 184     return OUString(lcl_aServiceName_InverseDateScaling);
 185 }
 186
 187 OUString SAL_CALL InverseDateScaling::getImplementationName()
 188 {
 189     return OUString(lcl_aServiceName_InverseDateScaling);
 190 }
 191
 192 sal_Bool SAL_CALL InverseDateScaling::supportsService( const OUString& rServiceName )
 193 {
 194     return cppu::supportsService(this, rServiceName);
 195 }
 196
 197 css::uno::Sequence< OUString > SAL_CALL InverseDateScaling::getSupportedServiceNames()
 198 {
 199     return { lcl_aServiceName_InverseDateScaling };
 200 }
 201
 202 } //namespace chart
 203
 204 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */