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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 60 : RegressionCurveCalculator::RegressionCurveCalculator() :
39 : m_fCorrelationCoeffitient(0.0),
40 : mDegree(2),
41 : mForceIntercept(false),
42 : mInterceptValue(0.0),
43 60 : mPeriod(2)
44 : {
45 60 : rtl::math::setNan( &m_fCorrelationCoeffitient );
46 60 : rtl::math::setNan( &mInterceptValue );
47 60 : }
48 :
49 60 : RegressionCurveCalculator::~RegressionCurveCalculator()
50 60 : {}
51 :
52 18 : bool RegressionCurveCalculator::isLinearScaling(
53 : const Reference< chart2::XScaling > & xScaling )
54 : {
55 : // no scaling means linear
56 18 : if( !xScaling.is())
57 0 : return true;
58 18 : uno::Reference< lang::XServiceName > xServiceName( xScaling, uno::UNO_QUERY );
59 18 : return xServiceName.is() && xServiceName->getServiceName() == "com.sun.star.chart2.LinearScaling";
60 : }
61 :
62 0 : bool RegressionCurveCalculator::isLogarithmicScaling(
63 : const Reference< chart2::XScaling > & xScaling )
64 : {
65 0 : uno::Reference< lang::XServiceName > xServiceName( xScaling, uno::UNO_QUERY );
66 0 : return xServiceName.is() && xServiceName->getServiceName() == "com.sun.star.chart2.LogarithmicScaling";
67 : }
68 :
69 60 : void RegressionCurveCalculator::setRegressionProperties(
70 : sal_Int32 aDegree,
71 : sal_Bool aForceIntercept,
72 : double aInterceptValue,
73 : sal_Int32 aPeriod )
74 : throw (uno::RuntimeException, std::exception)
75 : {
76 60 : mDegree = aDegree;
77 60 : mForceIntercept = aForceIntercept;
78 60 : mInterceptValue = aInterceptValue;
79 60 : mPeriod = aPeriod;
80 60 : }
81 :
82 44 : OUString RegressionCurveCalculator::getFormattedString(
83 : const Reference< util::XNumberFormatter >& xNumFormatter,
84 : sal_Int32 nNumberFormatKey,
85 : double fNumber )
86 : {
87 44 : OUString aResult;
88 :
89 44 : if( xNumFormatter.is())
90 44 : aResult = xNumFormatter->convertNumberToString( nNumberFormatKey, fNumber );
91 : else
92 0 : aResult = NUMBER_TO_STR( fNumber );
93 :
94 44 : return aResult;
95 : }
96 :
97 7 : Sequence< geometry::RealPoint2D > SAL_CALL RegressionCurveCalculator::getCurveValues(
98 : double min, double max, ::sal_Int32 nPointCount,
99 : const Reference< chart2::XScaling >& xScalingX,
100 : const Reference< chart2::XScaling >& /* xScalingY */,
101 : sal_Bool /* bMaySkipPointsInCalculation */ )
102 : throw (lang::IllegalArgumentException, uno::RuntimeException, std::exception)
103 : {
104 7 : if( nPointCount < 2 )
105 0 : throw lang::IllegalArgumentException();
106 :
107 : // determine if scaling and inverse scaling for x-values work
108 7 : bool bDoXScaling( xScalingX.is());
109 7 : uno::Reference< chart2::XScaling > xInverseScaling;
110 7 : if( bDoXScaling )
111 7 : xInverseScaling.set( xScalingX->getInverseScaling());
112 7 : bDoXScaling = bDoXScaling && xInverseScaling.is();
113 :
114 7 : Sequence< geometry::RealPoint2D > aResult( nPointCount );
115 :
116 7 : double fMin( min );
117 7 : double fFact = (max - min) / double(nPointCount-1);
118 :
119 7 : if( bDoXScaling )
120 : {
121 7 : fMin = xScalingX->doScaling( min );
122 7 : fFact = (xScalingX->doScaling( max ) - fMin) / double(nPointCount-1);
123 : }
124 :
125 532 : for(sal_Int32 nP=0; nP<nPointCount; nP++)
126 : {
127 525 : double x = fMin + nP * fFact;
128 525 : if( bDoXScaling )
129 525 : x = xInverseScaling->doScaling( x );
130 525 : aResult[nP].X = x;
131 525 : aResult[nP].Y = this->getCurveValue( x );
132 : }
133 :
134 7 : return aResult;
135 : }
136 :
137 8 : double SAL_CALL RegressionCurveCalculator::getCorrelationCoefficient()
138 : throw (uno::RuntimeException, std::exception)
139 : {
140 8 : return m_fCorrelationCoeffitient;
141 : }
142 :
143 0 : OUString SAL_CALL RegressionCurveCalculator::getRepresentation()
144 : throw (uno::RuntimeException, std::exception)
145 : {
146 0 : return ImplGetRepresentation( Reference< util::XNumberFormatter >(), 0 );
147 : }
148 :
149 15 : OUString SAL_CALL RegressionCurveCalculator::getFormattedRepresentation(
150 : const Reference< util::XNumberFormatsSupplier > & xNumFmtSupplier,
151 : sal_Int32 nNumberFormatKey )
152 : throw (uno::RuntimeException, std::exception)
153 : {
154 : // create and prepare a number formatter
155 15 : if( !xNumFmtSupplier.is())
156 0 : return getRepresentation();
157 15 : Reference< uno::XComponentContext > xContext( comphelper::getProcessComponentContext(), uno::UNO_QUERY_THROW );
158 30 : Reference< util::XNumberFormatter > xNumFormatter( util::NumberFormatter::create(xContext), uno::UNO_QUERY_THROW );
159 15 : xNumFormatter->attachNumberFormatsSupplier( xNumFmtSupplier );
160 :
161 30 : return ImplGetRepresentation( xNumFormatter, nNumberFormatKey );
162 : }
163 :
164 : } // namespace chart
165 :
166 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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