chart2/source/view/axes/DateHelper.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 <DateHelper.hxx>
  21 #include <rtl/math.hxx>
  22 #include <com/sun/star/chart/TimeUnit.hpp>
  23
  24 namespace chart
  25 {
  26 using namespace ::com::sun::star;
  27
  28 bool DateHelper::IsInSameYear( const Date& rD1, const Date& rD2 )
  29 {
  30     return rD1.GetYear() == rD2.GetYear();
  31 }
  32
  33 bool DateHelper::IsInSameMonth( const Date& rD1, const Date& rD2 )
  34 {
  35     return (rD1.GetYear() == rD2.GetYear())
  36         && (rD1.GetMonth() == rD2.GetMonth());
  37 }
  38
  39 Date DateHelper::GetDateSomeMonthsAway( const Date& rD, sal_Int32 nMonthDistance )
  40 {
  41     Date aRet(rD);
  42     aRet.AddMonths( nMonthDistance );
  43     return aRet;
  44 }
  45
  46 Date DateHelper::GetDateSomeYearsAway( const Date& rD, sal_Int32 nYearDistance )
  47 {
  48     Date aRet(rD);
  49     aRet.AddYears( static_cast<sal_Int16>(nYearDistance) );
  50     return aRet;
  51 }
  52
  53 bool DateHelper::IsLessThanOneMonthAway( const Date& rD1, const Date& rD2 )
  54 {
  55     Date aDMin( DateHelper::GetDateSomeMonthsAway( rD1, -1 ) );
  56     Date aDMax( DateHelper::GetDateSomeMonthsAway( rD1, 1 ) );
  57
  58     return rD2 > aDMin && rD2 < aDMax;
  59 }
  60
  61 bool DateHelper::IsLessThanOneYearAway( const Date& rD1, const Date& rD2 )
  62 {
  63     Date aDMin( DateHelper::GetDateSomeYearsAway( rD1, -1 ) );
  64     Date aDMax( DateHelper::GetDateSomeYearsAway( rD1, 1 ) );
  65
  66     return rD2 > aDMin && rD2 < aDMax;
  67 }
  68
  69 double DateHelper::RasterizeDateValue( double fValue, const Date& rNullDate, tools::Long TimeResolution )
  70 {
  71     if (std::isnan(fValue))
  72         return fValue;
  73
  74     Date aDate(rNullDate); aDate.AddDays(::rtl::math::approxFloor(fValue));
  75     switch(TimeResolution)
  76     {
  77         case css::chart::TimeUnit::DAY:
  78             break;
  79         case css::chart::TimeUnit::YEAR:
  80             aDate.SetMonth(1);
  81             aDate.SetDay(1);
  82             break;
  83         case css::chart::TimeUnit::MONTH:
  84         default:
  85             aDate.SetDay(1);
  86             break;
  87     }
  88     return aDate - rNullDate;
  89 }
  90
  91 } //namespace chart
  92
  93 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */