228 lines
7.6 KiB
C++
228 lines
7.6 KiB
C++
/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#ifndef CHART2_COMMONFUNCTORS_HXX
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#define CHART2_COMMONFUNCTORS_HXX
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#include <algorithm>
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#include <functional>
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#include <rtl/math.hxx>
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#include <com/sun/star/uno/Any.hxx>
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#include <rtl/ustring.hxx>
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#include <com/sun/star/uno/Sequence.hxx>
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#include "charttoolsdllapi.hxx"
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namespace chart
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{
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namespace CommonFunctors
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{
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/** unary function to convert any type T into a ::com::sun::star::uno::Any.
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<p>uno::makeAny is an inline function. Thus is cannot be taken directly
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(via mem_fun_ptr)</p>
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*/
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template< typename T >
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struct makeAny : public ::std::unary_function< T, ::com::sun::star::uno::Any >
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{
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::com::sun::star::uno::Any operator() ( const T & aVal )
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{
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return ::com::sun::star::uno::makeAny( aVal );
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}
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};
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/** unary function to convert ::com::sun::star::uno::Any into a double number.
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<p>In case no number can be generated from the Any, NaN (see
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rtl::math::SetNAN()) is returned.</p>
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*/
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struct OOO_DLLPUBLIC_CHARTTOOLS AnyToDouble : public ::std::unary_function< ::com::sun::star::uno::Any, double >
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{
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double operator() ( const ::com::sun::star::uno::Any & rAny )
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{
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double fResult;
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::rtl::math::setNan( & fResult );
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::com::sun::star::uno::TypeClass eClass( rAny.getValueType().getTypeClass() );
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if( eClass == ::com::sun::star::uno::TypeClass_STRING )
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{
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rtl_math_ConversionStatus eConversionStatus;
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fResult = ::rtl::math::stringToDouble(
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* reinterpret_cast< const ::rtl::OUString * >( rAny.getValue() ),
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sal_Char( '.' ), sal_Char( ',' ),
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& eConversionStatus, NULL );
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if( eConversionStatus != rtl_math_ConversionStatus_Ok )
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::rtl::math::setNan( & fResult );
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}
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else if( eClass == ::com::sun::star::uno::TypeClass_DOUBLE )
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{
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fResult = * reinterpret_cast< const double * >( rAny.getValue() );
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}
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return fResult;
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}
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};
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/** unary function to convert ::com::sun::star::uno::Any into an
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::rtl::OUString.
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*/
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struct OOO_DLLPUBLIC_CHARTTOOLS AnyToString : public ::std::unary_function< ::com::sun::star::uno::Any, ::rtl::OUString >
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{
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::rtl::OUString operator() ( const ::com::sun::star::uno::Any & rAny )
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{
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::com::sun::star::uno::TypeClass eClass( rAny.getValueType().getTypeClass() );
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if( eClass == ::com::sun::star::uno::TypeClass_DOUBLE )
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{
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const double* pDouble = reinterpret_cast< const double * >( rAny.getValue() );
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if( ::rtl::math::isNan(*pDouble) )
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return ::rtl::OUString();
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return ::rtl::math::doubleToUString(
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* pDouble,
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rtl_math_StringFormat_Automatic,
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-1, // use maximum decimal places available
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sal_Char( '.' ), // decimal separator
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false // do not erase trailing zeros
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);
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}
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else if( eClass == ::com::sun::star::uno::TypeClass_STRING )
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{
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return * reinterpret_cast< const ::rtl::OUString * >( rAny.getValue() );
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}
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return ::rtl::OUString();
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}
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};
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/** unary function to convert an ::rtl::OUString into a double number.
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<p>For conversion rtl::math::StringToDouble is used.</p>
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*/
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struct OOO_DLLPUBLIC_CHARTTOOLS OUStringToDouble : public ::std::unary_function< ::rtl::OUString, double >
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{
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double operator() ( const ::rtl::OUString & rStr )
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{
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rtl_math_ConversionStatus eConversionStatus;
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double fResult = ::rtl::math::stringToDouble( rStr, '.', ',', & eConversionStatus, NULL );
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if( eConversionStatus != rtl_math_ConversionStatus_Ok )
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::rtl::math::setNan( & fResult );
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return fResult;
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}
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};
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/** unary function to convert a double number into an ::rtl::OUString.
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<p>For conversion rtl::math::DoubleToOUString is used.</p>
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*/
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struct OOO_DLLPUBLIC_CHARTTOOLS DoubleToOUString : public ::std::unary_function< double, ::rtl::OUString >
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{
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::rtl::OUString operator() ( double fNumber )
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{
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return ::rtl::math::doubleToUString(
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fNumber,
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rtl_math_StringFormat_Automatic,
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-1, // use maximum number of decimal places
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static_cast< sal_Char >( '.' ),
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false // do not erase trailing zeros
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);
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}
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};
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// ================================================================================
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/** can be used to find an element with a specific first element in e.g. a
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vector of pairs (for searching keys in maps you will of course use map::find)
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*/
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template< typename First, typename Second >
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class FirstOfPairEquals : public ::std::unary_function< ::std::pair< First, Second >, bool >
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{
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public:
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FirstOfPairEquals( const First & aVal )
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: m_aValueToCompareWith( aVal )
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{}
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bool operator() ( const ::std::pair< First, Second > & rElem )
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{
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return rElem.first == m_aValueToCompareWith;
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}
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private:
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First m_aValueToCompareWith;
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};
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/** can be used to find a certain value in a map
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::std::find_if( aMap.begin(), aMap.end(),
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SecondOfPairEquals< string, int >( 42 ));
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*/
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template< typename Key, typename Value >
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class SecondOfPairEquals : public ::std::unary_function< ::std::pair< Key, Value >, bool >
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{
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public:
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SecondOfPairEquals( const Value & aVal )
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: m_aValueToCompareWith( aVal )
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{}
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bool operator() ( const ::std::pair< Key, Value > & rMapElem )
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{
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return rMapElem.second == m_aValueToCompareWith;
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}
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private:
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Value m_aValueToCompareWith;
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};
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/** Searches for data in a given map, i.e. not for the key but for the data
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pointed to by the keys.
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To find a key (value) you can use rMap.find( rValue )
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*/
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template< class MapType >
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inline typename MapType::const_iterator
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findValueInMap( const MapType & rMap, const typename MapType::mapped_type & rData )
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{
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return ::std::find_if( rMap.begin(), rMap.end(),
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::std::compose1( ::std::bind2nd(
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::std::equal_to< typename MapType::mapped_type >(),
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rData ),
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::std::select2nd< typename MapType::value_type >()));
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}
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/** Functor that deletes the object behind the given pointer by calling the
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delete operator
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*/
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template< typename T >
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struct DeletePtr : public ::std::unary_function< T *, void >
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{
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void operator() ( T * pObj )
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{ delete pObj; }
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};
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} // namespace CommonFunctors
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} // namespace chart
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// CHART2_COMMONFUNCTORS_HXX
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#endif
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