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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "RegressionCurveCalculator.hxx"
#include "RegressionCalculationHelper.hxx"
#include "servicenames_coosystems.hxx"
#include <comphelper/processfactory.hxx>
#include <rtl/math.hxx>
#include <com/sun/star/lang/XServiceName.hpp>
using namespace ::com::sun::star;
using ::com::sun::star::uno::Reference;
using ::com::sun::star::uno::Sequence;
using ::rtl::OUString;
namespace chart
{
RegressionCurveCalculator::RegressionCurveCalculator() :
m_fCorrelationCoeffitient( 0.0 )
{
::rtl::math::setNan( & m_fCorrelationCoeffitient );
}
RegressionCurveCalculator::~RegressionCurveCalculator()
{}
bool RegressionCurveCalculator::isLinearScaling(
const Reference< chart2::XScaling > & xScaling )
{
// no scaling means linear
if( !xScaling.is())
return true;
static OUString aLinScalingServiceName( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.chart2.LinearScaling" ));
uno::Reference< lang::XServiceName > xServiceName( xScaling, uno::UNO_QUERY );
return (xServiceName.is() && xServiceName->getServiceName().equals( aLinScalingServiceName ));
}
bool RegressionCurveCalculator::isLogarithmicScaling(
const Reference< chart2::XScaling > & xScaling )
{
static OUString aLogScalingServiceName( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.chart2.LogarithmicScaling" ));
uno::Reference< lang::XServiceName > xServiceName( xScaling, uno::UNO_QUERY );
return (xServiceName.is() && xServiceName->getServiceName().equals( aLogScalingServiceName ));
}
OUString RegressionCurveCalculator::getFormattedString(
const Reference< util::XNumberFormatter >& xNumFormatter,
::sal_Int32 nNumberFormatKey,
double fNumber ) const
{
OUString aResult;
if( xNumFormatter.is())
aResult = xNumFormatter->convertNumberToString( nNumberFormatKey, fNumber );
else
aResult = NUMBER_TO_STR( fNumber );
return aResult;
}
Sequence< geometry::RealPoint2D > SAL_CALL RegressionCurveCalculator::getCurveValues(
double min, double max, ::sal_Int32 nPointCount,
const Reference< chart2::XScaling >& xScalingX,
const Reference< chart2::XScaling >& /* xScalingY */,
::sal_Bool /* bMaySkipPointsInCalculation */ )
throw (lang::IllegalArgumentException,
uno::RuntimeException)
{
if( nPointCount < 2 )
throw lang::IllegalArgumentException();
// determine if scaling and inverse scaling for x-values work
bool bDoXScaling( xScalingX.is());
uno::Reference< chart2::XScaling > xInverseScaling;
if( bDoXScaling )
xInverseScaling.set( xScalingX->getInverseScaling());
bDoXScaling = bDoXScaling && xInverseScaling.is();
Sequence< geometry::RealPoint2D > aResult( nPointCount );
double fMin( min );
double fFact = (max - min) / double(nPointCount-1);
if( bDoXScaling )
{
fMin = xScalingX->doScaling( min );
fFact = (xScalingX->doScaling( max ) - fMin) / double(nPointCount-1);
}
for(sal_Int32 nP=0; nP<nPointCount; nP++)
{
double x = fMin + nP * fFact;
if( bDoXScaling )
x = xInverseScaling->doScaling( x );
aResult[nP].X = x;
aResult[nP].Y = this->getCurveValue( x );
}
return aResult;
}
double SAL_CALL RegressionCurveCalculator::getCorrelationCoefficient()
throw (uno::RuntimeException)
{
return m_fCorrelationCoeffitient;
}
OUString SAL_CALL RegressionCurveCalculator::getRepresentation()
throw (uno::RuntimeException)
{
return ImplGetRepresentation( Reference< util::XNumberFormatter >(), 0 );
}
OUString SAL_CALL RegressionCurveCalculator::getFormattedRepresentation(
const Reference< util::XNumberFormatsSupplier > & xNumFmtSupplier,
::sal_Int32 nNumberFormatKey )
throw (uno::RuntimeException)
{
// create and prepare a number formatter
if( !xNumFmtSupplier.is())
return getRepresentation();
Reference< util::XNumberFormatter > xNumFormatter;
Reference< lang::XMultiServiceFactory > xFact( comphelper::getProcessServiceFactory(), uno::UNO_QUERY );
if( xFact.is())
xNumFormatter.set( xFact->createInstance(
OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.util.NumberFormatter"))), uno::UNO_QUERY );
if( !xNumFormatter.is())
return getRepresentation();
xNumFormatter->attachNumberFormatsSupplier( xNumFmtSupplier );
return ImplGetRepresentation( xNumFormatter, nNumberFormatKey );
}
} // namespace chart
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */