1 files changed, 169 insertions, 0 deletions
diff --git a/chart2/source/tools/RegressionCurveCalculator.cxx b/chart2/source/tools/RegressionCurveCalculator.cxx
new file mode 100644
index 000000000000..b8814fcb2fe1
--- /dev/null
+++ b/chart2/source/tools/RegressionCurveCalculator.cxx
@@ -0,0 +1,169 @@
+/* -*- 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.
+ *
+ ************************************************************************/
+
+// MARKER(update_precomp.py): autogen include statement, do not remove
+#include "precompiled_chart2.hxx"
+
+#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: */