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