267 lines
7 KiB
C++
267 lines
7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <Scaling.hxx>
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#include <com/sun/star/uno/RuntimeException.hpp>
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#include <cppuhelper/supportsservice.hxx>
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#include <cmath>
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#include <limits>
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namespace com::sun::star::uno { class XComponentContext; }
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namespace
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{
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constexpr OUString lcl_aServiceName_Logarithmic = u"com.sun.star.chart2.LogarithmicScaling"_ustr;
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constexpr OUString lcl_aServiceName_Exponential = u"com.sun.star.chart2.ExponentialScaling"_ustr;
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constexpr OUString lcl_aServiceName_Linear = u"com.sun.star.chart2.LinearScaling"_ustr;
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constexpr OUString lcl_aServiceName_Power = u"com.sun.star.chart2.PowerScaling"_ustr;
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}
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namespace chart
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{
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using namespace ::com::sun::star;
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using namespace ::com::sun::star::chart2;
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LogarithmicScaling::LogarithmicScaling() :
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m_fBase( 10.0 ),
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m_fLogOfBase( log( 10.0 ) )
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{
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}
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LogarithmicScaling::LogarithmicScaling( double fBase ) :
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m_fBase( fBase ),
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m_fLogOfBase( log( fBase ) )
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{
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}
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LogarithmicScaling::~LogarithmicScaling()
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{
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}
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double SAL_CALL LogarithmicScaling::doScaling( double value )
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{
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if( std::isnan( value ) || std::isinf( value ) )
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return std::numeric_limits<double>::quiet_NaN();
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return std::log( value ) / m_fLogOfBase;
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}
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uno::Reference< XScaling > SAL_CALL LogarithmicScaling::getInverseScaling()
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{
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return new ExponentialScaling( m_fBase );
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}
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OUString SAL_CALL LogarithmicScaling::getServiceName()
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{
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return lcl_aServiceName_Logarithmic;
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}
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OUString SAL_CALL LogarithmicScaling::getImplementationName()
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{
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return lcl_aServiceName_Logarithmic;
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}
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sal_Bool SAL_CALL LogarithmicScaling::supportsService( const OUString& rServiceName )
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{
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return cppu::supportsService(this, rServiceName);
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}
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css::uno::Sequence< OUString > SAL_CALL LogarithmicScaling::getSupportedServiceNames()
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{
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return { lcl_aServiceName_Logarithmic };
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}
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ExponentialScaling::ExponentialScaling() :
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m_fBase( 10.0 )
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{
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}
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ExponentialScaling::ExponentialScaling( double fBase ) :
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m_fBase( fBase )
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{
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}
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ExponentialScaling::~ExponentialScaling()
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{
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}
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double SAL_CALL ExponentialScaling::doScaling( double value )
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{
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if( std::isnan( value ) || std::isinf( value ) )
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return std::numeric_limits<double>::quiet_NaN();
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return std::pow( m_fBase, value );
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}
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uno::Reference< XScaling > SAL_CALL ExponentialScaling::getInverseScaling()
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{
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return new LogarithmicScaling( m_fBase );
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}
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OUString SAL_CALL ExponentialScaling::getServiceName()
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{
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return lcl_aServiceName_Exponential;
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}
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OUString SAL_CALL ExponentialScaling::getImplementationName()
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{
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return lcl_aServiceName_Exponential;
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}
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sal_Bool SAL_CALL ExponentialScaling::supportsService( const OUString& rServiceName )
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{
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return cppu::supportsService(this, rServiceName);
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}
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css::uno::Sequence< OUString > SAL_CALL ExponentialScaling::getSupportedServiceNames()
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{
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return { lcl_aServiceName_Exponential };
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}
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LinearScaling::LinearScaling() :
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m_fSlope( 1.0 ),
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m_fOffset( 0.0 )
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{}
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LinearScaling::LinearScaling( double fSlope, double fOffset ) :
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m_fSlope( fSlope ),
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m_fOffset( fOffset )
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{}
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LinearScaling::~LinearScaling()
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{}
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double SAL_CALL LinearScaling::doScaling( double value )
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{
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if( std::isnan( value ) || std::isinf( value ) )
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return std::numeric_limits<double>::quiet_NaN();
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return m_fOffset + m_fSlope * value;
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}
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uno::Reference< XScaling > SAL_CALL
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LinearScaling::getInverseScaling()
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{
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// ToDo: ApproxEqual ?
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if( m_fSlope == 0 )
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throw uno::RuntimeException(u"Divide by zero exception"_ustr);
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return new LinearScaling( 1.0 / m_fSlope, m_fOffset / m_fSlope );
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}
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OUString SAL_CALL LinearScaling::getServiceName()
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{
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return lcl_aServiceName_Linear;
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}
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OUString SAL_CALL LinearScaling::getImplementationName()
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{
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return lcl_aServiceName_Linear ;
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}
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sal_Bool SAL_CALL LinearScaling::supportsService( const OUString& rServiceName )
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{
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return cppu::supportsService(this, rServiceName);
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}
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css::uno::Sequence< OUString > SAL_CALL LinearScaling::getSupportedServiceNames()
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{
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return { lcl_aServiceName_Linear };
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}
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PowerScaling::PowerScaling() :
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m_fExponent( 10.0 )
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{}
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PowerScaling::PowerScaling( double fExponent ) :
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m_fExponent( fExponent )
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{}
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PowerScaling::~PowerScaling()
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{}
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double SAL_CALL PowerScaling::doScaling( double value )
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{
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if( std::isnan( value ) || std::isinf( value ) )
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return std::numeric_limits<double>::quiet_NaN();
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return std::pow( value, m_fExponent );
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}
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uno::Reference< XScaling > SAL_CALL
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PowerScaling::getInverseScaling()
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{
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// ToDo: ApproxEqual ?
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if( m_fExponent == 0 )
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throw uno::RuntimeException(u"Divide by zero exception"_ustr);
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return new PowerScaling( 1.0 / m_fExponent );
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}
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OUString SAL_CALL
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PowerScaling::getServiceName()
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{
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return lcl_aServiceName_Power;
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}
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OUString SAL_CALL PowerScaling::getImplementationName()
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{
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return lcl_aServiceName_Power;
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}
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sal_Bool SAL_CALL PowerScaling::supportsService( const OUString& rServiceName )
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{
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return cppu::supportsService(this, rServiceName);
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}
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css::uno::Sequence< OUString > SAL_CALL PowerScaling::getSupportedServiceNames()
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{
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return { lcl_aServiceName_Power };
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}
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} //namespace chart
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extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
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com_sun_star_chart2_LinearScaling_get_implementation(css::uno::XComponentContext *,
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css::uno::Sequence<css::uno::Any> const &)
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{
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return cppu::acquire(new chart::LinearScaling );
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}
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extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
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com_sun_star_chart2_ExponentialScaling_get_implementation(css::uno::XComponentContext *,
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css::uno::Sequence<css::uno::Any> const &)
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{
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return cppu::acquire(new chart::ExponentialScaling );
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}
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extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
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com_sun_star_chart2_LogarithmicScaling_get_implementation(css::uno::XComponentContext *,
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css::uno::Sequence<css::uno::Any> const &)
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{
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return cppu::acquire(new chart::LogarithmicScaling );
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}
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extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
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com_sun_star_chart2_PowerScaling_get_implementation(css::uno::XComponentContext *,
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css::uno::Sequence<css::uno::Any> const &)
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{
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return cppu::acquire(new chart::PowerScaling );
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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