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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "DateScaling.hxx"
#include <com/sun/star/chart/TimeUnit.hpp>
#include <rtl/math.hxx>
#include <cppuhelper/supportsservice.hxx>
namespace
{
static const char lcl_aServiceName_DateScaling[] = "com.sun.star.chart2.DateScaling";
static const char lcl_aServiceName_InverseDateScaling[] = "com.sun.star.chart2.InverseDateScaling";
static const double lcl_fNumberOfMonths = 12.0;//todo: this needs to be offered by basic tools Date class if it should be more generic
}
namespace chart
{
using namespace ::com::sun::star;
using namespace ::com::sun::star::chart2;
using ::com::sun::star::chart::TimeUnit::DAY;
using ::com::sun::star::chart::TimeUnit::MONTH;
using ::com::sun::star::chart::TimeUnit::YEAR;
DateScaling::DateScaling( const Date& rNullDate, sal_Int32 nTimeUnit, bool bShifted )
: m_aNullDate( rNullDate )
, m_nTimeUnit( nTimeUnit )
, m_bShifted( bShifted )
{
}
DateScaling::~DateScaling()
{
}
double SAL_CALL DateScaling::doScaling( double value )
{
double fResult(value);
if( std::isnan( value ) || std::isinf( value ) )
::rtl::math::setNan( & fResult );
else
{
Date aDate(m_aNullDate);
aDate.AddDays(::rtl::math::approxFloor(value));
switch( m_nTimeUnit )
{
case DAY:
fResult = value;
if(m_bShifted)
fResult+=0.5;
break;
case YEAR:
case MONTH:
default:
fResult = aDate.GetYear();
fResult *= lcl_fNumberOfMonths;//assuming equal count of months in each year
fResult += aDate.GetMonth();
double fDayOfMonth = aDate.GetDay();
fDayOfMonth -= 1.0;
double fDaysInMonth = aDate.GetDaysInMonth();
fResult += fDayOfMonth/fDaysInMonth;
if(m_bShifted)
{
if( m_nTimeUnit==YEAR )
fResult += 0.5*lcl_fNumberOfMonths;
else
fResult += 0.5;
}
break;
}
}
return fResult;
}
uno::Reference< XScaling > SAL_CALL DateScaling::getInverseScaling()
{
return new InverseDateScaling( m_aNullDate, m_nTimeUnit, m_bShifted );
}
OUString SAL_CALL DateScaling::getServiceName()
{
return lcl_aServiceName_DateScaling;
}
OUString SAL_CALL DateScaling::getImplementationName()
{
return lcl_aServiceName_DateScaling;
}
sal_Bool SAL_CALL DateScaling::supportsService( const OUString& rServiceName )
{
return cppu::supportsService(this, rServiceName);
}
css::uno::Sequence< OUString > SAL_CALL DateScaling::getSupportedServiceNames()
{
return { lcl_aServiceName_DateScaling };
}
InverseDateScaling::InverseDateScaling( const Date& rNullDate, sal_Int32 nTimeUnit, bool bShifted )
: m_aNullDate( rNullDate )
, m_nTimeUnit( nTimeUnit )
, m_bShifted( bShifted )
{
}
InverseDateScaling::~InverseDateScaling()
{
}
double SAL_CALL InverseDateScaling::doScaling( double value )
{
double fResult(value);
if( std::isnan( value ) || std::isinf( value ) )
::rtl::math::setNan( & fResult );
else
{
switch( m_nTimeUnit )
{
case DAY:
if(m_bShifted)
value -= 0.5;
fResult = value;
break;
case YEAR:
case MONTH:
default:
//Date aDate(m_aNullDate);
if(m_bShifted)
{
if( m_nTimeUnit==YEAR )
value -= 0.5*lcl_fNumberOfMonths;
else
value -= 0.5;
}
Date aDate( Date::EMPTY );
double fYear = ::rtl::math::approxFloor(value/lcl_fNumberOfMonths);
double fMonth = ::rtl::math::approxFloor(value-(fYear*lcl_fNumberOfMonths));
if( fMonth==0.0 )
{
fYear--;
fMonth=12.0;
}
aDate.SetYear( static_cast<sal_uInt16>(fYear) );
aDate.SetMonth( static_cast<sal_uInt16>(fMonth) );
aDate.SetDay( 1 );
double fMonthCount = (fYear*lcl_fNumberOfMonths)+fMonth;
double fDay = (value-fMonthCount)*aDate.GetDaysInMonth();
fDay += 1.0;
aDate.SetDay( static_cast<sal_uInt16>(::rtl::math::round(fDay)) );
fResult = aDate - m_aNullDate;
break;
}
}
return fResult;
}
uno::Reference< XScaling > SAL_CALL InverseDateScaling::getInverseScaling()
{
return new DateScaling( m_aNullDate, m_nTimeUnit, m_bShifted );
}
OUString SAL_CALL InverseDateScaling::getServiceName()
{
return lcl_aServiceName_InverseDateScaling;
}
OUString SAL_CALL InverseDateScaling::getImplementationName()
{
return lcl_aServiceName_InverseDateScaling;
}
sal_Bool SAL_CALL InverseDateScaling::supportsService( const OUString& rServiceName )
{
return cppu::supportsService(this, rServiceName);
}
css::uno::Sequence< OUString > SAL_CALL InverseDateScaling::getSupportedServiceNames()
{
return { lcl_aServiceName_InverseDateScaling };
}
} //namespace chart
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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