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.
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   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     throw (uno::RuntimeException, std::exception)
  56 {
  57     double fResult(value);
  58     if( ::rtl::math::isNan( value ) || ::rtl::math::isInf( value ) )
  59         ::rtl::math::setNan( & fResult );
  60     else
  61     {
  62         Date aDate(m_aNullDate);
  63         aDate += static_cast<long>(::rtl::math::approxFloor(value));
  64         switch( m_nTimeUnit )
  65         {
  66             case DAY:
  67                 fResult = value;
  68                 if(m_bShifted)
  69                     fResult+=0.5;
  70                 break;
  71             case YEAR:
  72             case MONTH:
  73             default:
  74                 fResult = aDate.GetYear();
  75                 fResult *= lcl_fNumberOfMonths;//asssuming equal count of months in each year
  76                 fResult += aDate.GetMonth();
  77
  78                 double fDayOfMonth = aDate.GetDay();
  79                 fDayOfMonth -= 1.0;
  80                 double fDaysInMonth = aDate.GetDaysInMonth();
  81                 fResult += fDayOfMonth/fDaysInMonth;
  82                 if(m_bShifted)
  83                 {
  84                     if( YEAR==m_nTimeUnit )
  85                         fResult += 0.5*lcl_fNumberOfMonths;
  86                     else
  87                         fResult += 0.5;
  88                 }
  89                 break;
  90         }
  91     }
  92     return fResult;
  93 }
  94
  95 uno::Reference< XScaling > SAL_CALL DateScaling::getInverseScaling()
  96     throw (uno::RuntimeException, std::exception)
  97 {
  98     return new InverseDateScaling( m_aNullDate, m_nTimeUnit, m_bShifted );
  99 }
 100
 101 OUString SAL_CALL DateScaling::getServiceName()
 102     throw (uno::RuntimeException, std::exception)
 103 {
 104     return OUString(lcl_aServiceName_DateScaling);
 105 }
 106
 107 uno::Sequence< OUString > DateScaling::getSupportedServiceNames_Static()
 108 {
 109     uno::Sequence< OUString > aSeq(1);
 110     aSeq.getArray()[0] = lcl_aServiceName_DateScaling;
 111     return aSeq;
 112 }
 113
 114 // implement XServiceInfo methods basing upon getSupportedServiceNames_Static
 115 OUString SAL_CALL DateScaling::getImplementationName()
 116     throw( css::uno::RuntimeException, std::exception )
 117 {
 118     return getImplementationName_Static();
 119 }
 120
 121 OUString DateScaling::getImplementationName_Static()
 122 {
 123     return OUString(lcl_aServiceName_DateScaling);
 124 }
 125
 126 sal_Bool SAL_CALL DateScaling::supportsService( const OUString& rServiceName )
 127     throw( css::uno::RuntimeException, std::exception )
 128 {
 129     return cppu::supportsService(this, rServiceName);
 130 }
 131
 132 css::uno::Sequence< OUString > SAL_CALL DateScaling::getSupportedServiceNames()
 133     throw( css::uno::RuntimeException, std::exception )
 134 {
 135     return getSupportedServiceNames_Static();
 136 }
 137
 138 InverseDateScaling::InverseDateScaling( const Date& rNullDate, sal_Int32 nTimeUnit, bool bShifted )
 139         : m_aNullDate( rNullDate )
 140         , m_nTimeUnit( nTimeUnit )
 141         , m_bShifted( bShifted )
 142 {
 143 }
 144
 145 InverseDateScaling::~InverseDateScaling()
 146 {
 147 }
 148
 149 double SAL_CALL InverseDateScaling::doScaling( double value )
 150     throw (uno::RuntimeException, std::exception)
 151 {
 152     double fResult(value);
 153     if( ::rtl::math::isNan( value ) || ::rtl::math::isInf( value ) )
 154         ::rtl::math::setNan( & fResult );
 155     else
 156     {
 157         switch( m_nTimeUnit )
 158         {
 159             case DAY:
 160                 if(m_bShifted)
 161                     value -= 0.5;
 162                 fResult = value;
 163                 break;
 164             case YEAR:
 165             case MONTH:
 166             default:
 167                 //Date aDate(m_aNullDate);
 168                 if(m_bShifted)
 169                 {
 170                     if( YEAR==m_nTimeUnit )
 171                         value -= 0.5*lcl_fNumberOfMonths;
 172                     else
 173                         value -= 0.5;
 174                 }
 175                 Date aDate( Date::EMPTY );
 176                 double fYear = ::rtl::math::approxFloor(value/lcl_fNumberOfMonths);
 177                 double fMonth = ::rtl::math::approxFloor(value-(fYear*lcl_fNumberOfMonths));
 178                 if( fMonth==0.0 )
 179                 {
 180                     fYear--;
 181                     fMonth=12.0;
 182                 }
 183                 aDate.SetYear( static_cast<sal_uInt16>(fYear) );
 184                 aDate.SetMonth( static_cast<sal_uInt16>(fMonth) );
 185                 aDate.SetDay( 1 );
 186                 double fMonthCount = (fYear*lcl_fNumberOfMonths)+fMonth;
 187                 double fDay = (value-fMonthCount)*aDate.GetDaysInMonth();
 188                 fDay += 1.0;
 189                 aDate.SetDay( static_cast<sal_uInt16>(::rtl::math::round(fDay)) );
 190                 fResult = aDate - m_aNullDate;
 191                 break;
 192         }
 193     }
 194     return fResult;
 195 }
 196
 197 uno::Reference< XScaling > SAL_CALL InverseDateScaling::getInverseScaling()
 198     throw (uno::RuntimeException, std::exception)
 199 {
 200     return new DateScaling( m_aNullDate, m_nTimeUnit, m_bShifted );
 201 }
 202
 203 OUString SAL_CALL InverseDateScaling::getServiceName()
 204     throw (uno::RuntimeException, std::exception)
 205 {
 206     return OUString(lcl_aServiceName_InverseDateScaling);
 207 }
 208
 209 uno::Sequence< OUString > InverseDateScaling::getSupportedServiceNames_Static()
 210 {
 211     uno::Sequence< OUString > aSeq( 1 );
 212     aSeq.getArray()[0] = lcl_aServiceName_InverseDateScaling;
 213     return aSeq;
 214 }
 215
 216 // implement XServiceInfo methods basing upon getSupportedServiceNames_Static
 217 OUString SAL_CALL InverseDateScaling::getImplementationName()
 218     throw( css::uno::RuntimeException, std::exception )
 219 {
 220     return getImplementationName_Static();
 221 }
 222
 223 OUString InverseDateScaling::getImplementationName_Static()
 224 {
 225     return OUString(lcl_aServiceName_InverseDateScaling);
 226 }
 227
 228 sal_Bool SAL_CALL InverseDateScaling::supportsService( const OUString& rServiceName )
 229     throw( css::uno::RuntimeException, std::exception )
 230 {
 231     return cppu::supportsService(this, rServiceName);
 232 }
 233
 234 css::uno::Sequence< OUString > SAL_CALL InverseDateScaling::getSupportedServiceNames()
 235     throw( css::uno::RuntimeException, std::exception )
 236 {
 237     return getSupportedServiceNames_Static();
 238 }
 239
 240 } //namespace chart
 241
 242 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */