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Diffstat (limited to 'chart2/source/view/axes/DateScaling.cxx')
| -rw-r--r-- | chart2/source/view/axes/DateScaling.cxx | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/chart2/source/view/axes/DateScaling.cxx b/chart2/source/view/axes/DateScaling.cxx new file mode 100644 index 000000000..15cb59635 --- /dev/null +++ b/chart2/source/view/axes/DateScaling.cxx @@ -0,0 +1,205 @@ +/* -*- 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> + +#include <limits> + +namespace +{ + +constexpr OUStringLiteral lcl_aServiceName_DateScaling = u"com.sun.star.chart2.DateScaling"; +constexpr OUStringLiteral lcl_aServiceName_InverseDateScaling + = u"com.sun.star.chart2.InverseDateScaling"; + +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 ) ) + return std::numeric_limits<double>::quiet_NaN(); + switch( m_nTimeUnit ) + { + case DAY: + fResult = value; + if(m_bShifted) + fResult+=0.5; + break; + case YEAR: + case MONTH: + default: + { + Date aDate(m_aNullDate); + aDate.AddDays(::rtl::math::approxFloor(value)); + 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 ) ) + return std::numeric_limits<double>::quiet_NaN(); + 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: */ |