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