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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 "RegressionCurveCalculator.hxx"
21 : #include "RegressionCalculationHelper.hxx"
22 : #include "servicenames_coosystems.hxx"
23 :
24 : #include <comphelper/processfactory.hxx>
25 : #include <rtl/math.hxx>
26 :
27 : #include <com/sun/star/lang/XServiceName.hpp>
28 : #include <com/sun/star/util/NumberFormatter.hpp>
29 :
30 : using namespace ::com::sun::star;
31 :
32 : using ::com::sun::star::uno::Reference;
33 : using ::com::sun::star::uno::Sequence;
34 :
35 : namespace chart
36 : {
37 :
38 0 : RegressionCurveCalculator::RegressionCurveCalculator() :
39 : m_fCorrelationCoeffitient(0.0),
40 : mDegree(2),
41 : mForceIntercept(false),
42 : mInterceptValue(0.0),
43 0 : mPeriod(2)
44 : {
45 0 : rtl::math::setNan( &m_fCorrelationCoeffitient );
46 0 : rtl::math::setNan( &mInterceptValue );
47 0 : }
48 :
49 0 : RegressionCurveCalculator::~RegressionCurveCalculator()
50 0 : {}
51 :
52 0 : bool RegressionCurveCalculator::isLinearScaling(
53 : const Reference< chart2::XScaling > & xScaling )
54 : {
55 : // no scaling means linear
56 0 : if( !xScaling.is())
57 0 : return true;
58 0 : static OUString aLinScalingServiceName( "com.sun.star.chart2.LinearScaling" );
59 0 : uno::Reference< lang::XServiceName > xServiceName( xScaling, uno::UNO_QUERY );
60 0 : return (xServiceName.is() && xServiceName->getServiceName().equals( aLinScalingServiceName ));
61 : }
62 :
63 0 : bool RegressionCurveCalculator::isLogarithmicScaling(
64 : const Reference< chart2::XScaling > & xScaling )
65 : {
66 0 : static OUString aLogScalingServiceName( "com.sun.star.chart2.LogarithmicScaling" );
67 0 : uno::Reference< lang::XServiceName > xServiceName( xScaling, uno::UNO_QUERY );
68 0 : return (xServiceName.is() && xServiceName->getServiceName().equals( aLogScalingServiceName ));
69 : }
70 :
71 0 : void RegressionCurveCalculator::setRegressionProperties(
72 : sal_Int32 aDegree,
73 : sal_Bool aForceIntercept,
74 : double aInterceptValue,
75 : sal_Int32 aPeriod )
76 : throw (uno::RuntimeException, std::exception)
77 : {
78 0 : mDegree = aDegree;
79 0 : mForceIntercept = aForceIntercept;
80 0 : mInterceptValue = aInterceptValue;
81 0 : mPeriod = aPeriod;
82 0 : }
83 :
84 0 : OUString RegressionCurveCalculator::getFormattedString(
85 : const Reference< util::XNumberFormatter >& xNumFormatter,
86 : sal_Int32 nNumberFormatKey,
87 : double fNumber ) const
88 : {
89 0 : OUString aResult;
90 :
91 0 : if( xNumFormatter.is())
92 0 : aResult = xNumFormatter->convertNumberToString( nNumberFormatKey, fNumber );
93 : else
94 0 : aResult = NUMBER_TO_STR( fNumber );
95 :
96 0 : return aResult;
97 : }
98 :
99 0 : Sequence< geometry::RealPoint2D > SAL_CALL RegressionCurveCalculator::getCurveValues(
100 : double min, double max, ::sal_Int32 nPointCount,
101 : const Reference< chart2::XScaling >& xScalingX,
102 : const Reference< chart2::XScaling >& /* xScalingY */,
103 : sal_Bool /* bMaySkipPointsInCalculation */ )
104 : throw (lang::IllegalArgumentException, uno::RuntimeException, std::exception)
105 : {
106 0 : if( nPointCount < 2 )
107 0 : throw lang::IllegalArgumentException();
108 :
109 : // determine if scaling and inverse scaling for x-values work
110 0 : bool bDoXScaling( xScalingX.is());
111 0 : uno::Reference< chart2::XScaling > xInverseScaling;
112 0 : if( bDoXScaling )
113 0 : xInverseScaling.set( xScalingX->getInverseScaling());
114 0 : bDoXScaling = bDoXScaling && xInverseScaling.is();
115 :
116 0 : Sequence< geometry::RealPoint2D > aResult( nPointCount );
117 :
118 0 : double fMin( min );
119 0 : double fFact = (max - min) / double(nPointCount-1);
120 :
121 0 : if( bDoXScaling )
122 : {
123 0 : fMin = xScalingX->doScaling( min );
124 0 : fFact = (xScalingX->doScaling( max ) - fMin) / double(nPointCount-1);
125 : }
126 :
127 0 : for(sal_Int32 nP=0; nP<nPointCount; nP++)
128 : {
129 0 : double x = fMin + nP * fFact;
130 0 : if( bDoXScaling )
131 0 : x = xInverseScaling->doScaling( x );
132 0 : aResult[nP].X = x;
133 0 : aResult[nP].Y = this->getCurveValue( x );
134 : }
135 :
136 0 : return aResult;
137 : }
138 :
139 0 : double SAL_CALL RegressionCurveCalculator::getCorrelationCoefficient()
140 : throw (uno::RuntimeException, std::exception)
141 : {
142 0 : return m_fCorrelationCoeffitient;
143 : }
144 :
145 0 : OUString SAL_CALL RegressionCurveCalculator::getRepresentation()
146 : throw (uno::RuntimeException, std::exception)
147 : {
148 0 : return ImplGetRepresentation( Reference< util::XNumberFormatter >(), 0 );
149 : }
150 :
151 0 : OUString SAL_CALL RegressionCurveCalculator::getFormattedRepresentation(
152 : const Reference< util::XNumberFormatsSupplier > & xNumFmtSupplier,
153 : sal_Int32 nNumberFormatKey )
154 : throw (uno::RuntimeException, std::exception)
155 : {
156 : // create and prepare a number formatter
157 0 : if( !xNumFmtSupplier.is())
158 0 : return getRepresentation();
159 0 : Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext(), uno::UNO_QUERY_THROW );
160 0 : Reference< util::XNumberFormatter > xNumFormatter( util::NumberFormatter::create(xContext), uno::UNO_QUERY_THROW );
161 0 : xNumFormatter->attachNumberFormatsSupplier( xNumFmtSupplier );
162 :
163 0 : return ImplGetRepresentation( xNumFormatter, nNumberFormatKey );
164 : }
165 :
166 : } // namespace chart
167 :
168 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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