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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_CHART2_SOURCE_INC_COMMONFUNCTORS_HXX
#define INCLUDED_CHART2_SOURCE_INC_COMMONFUNCTORS_HXX
#include <algorithm>
#include <functional>
#include <rtl/math.hxx>
#include <com/sun/star/uno/Any.hxx>
#include <rtl/ustring.hxx>
#include <com/sun/star/uno/Sequence.hxx>
#include "charttoolsdllapi.hxx"
namespace chart
{
namespace CommonFunctors
{
/** unary function to convert any type T into a ::com::sun::star::uno::Any.
<p>uno::makeAny is an inline function. Thus is cannot be taken directly
(via mem_fun_ptr)</p>
*/
template< typename T >
struct makeAny : public ::std::unary_function< T, ::com::sun::star::uno::Any >
{
::com::sun::star::uno::Any operator() ( const T & aVal )
{
return ::com::sun::star::uno::makeAny( aVal );
}
};
/** unary function to convert ::com::sun::star::uno::Any into a double number.
<p>In case no number can be generated from the Any, NaN (see
rtl::math::SetNAN()) is returned.</p>
*/
struct OOO_DLLPUBLIC_CHARTTOOLS AnyToDouble : public ::std::unary_function< ::com::sun::star::uno::Any, double >
{
double operator() ( const ::com::sun::star::uno::Any & rAny )
{
double fResult;
::rtl::math::setNan( & fResult );
::com::sun::star::uno::TypeClass eClass( rAny.getValueType().getTypeClass() );
if( eClass == ::com::sun::star::uno::TypeClass_DOUBLE )
{
fResult = * static_cast< const double * >( rAny.getValue() );
}
return fResult;
}
};
/** unary function to convert ::com::sun::star::uno::Any into an
OUString.
*/
struct OOO_DLLPUBLIC_CHARTTOOLS AnyToString : public ::std::unary_function< ::com::sun::star::uno::Any, OUString >
{
OUString operator() ( const ::com::sun::star::uno::Any & rAny )
{
::com::sun::star::uno::TypeClass eClass( rAny.getValueType().getTypeClass() );
if( eClass == ::com::sun::star::uno::TypeClass_DOUBLE )
{
const double* pDouble = static_cast< const double * >( rAny.getValue() );
if( ::rtl::math::isNan(*pDouble) )
return OUString();
return ::rtl::math::doubleToUString(
* pDouble,
rtl_math_StringFormat_Automatic,
rtl_math_DecimalPlaces_Max, // use maximum decimal places available
sal_Char( '.' ), // decimal separator
true // remove trailing zeros
);
}
else if( eClass == ::com::sun::star::uno::TypeClass_STRING )
{
return * static_cast< const OUString * >( rAny.getValue() );
}
return OUString();
}
};
/** unary function to convert an OUString into a double number.
<p>For conversion rtl::math::StringToDouble is used.</p>
*/
struct OOO_DLLPUBLIC_CHARTTOOLS OUStringToDouble : public ::std::unary_function< OUString, double >
{
double operator() ( const OUString & rStr )
{
rtl_math_ConversionStatus eConversionStatus;
double fResult = ::rtl::math::stringToDouble( rStr, '.', ',', & eConversionStatus, NULL );
if( eConversionStatus != rtl_math_ConversionStatus_Ok )
::rtl::math::setNan( & fResult );
return fResult;
}
};
/** unary function to convert a double number into an OUString.
<p>For conversion rtl::math::DoubleToOUString is used.</p>
*/
struct OOO_DLLPUBLIC_CHARTTOOLS DoubleToOUString : public ::std::unary_function< double, OUString >
{
OUString operator() ( double fNumber )
{
return ::rtl::math::doubleToUString(
fNumber,
rtl_math_StringFormat_Automatic,
rtl_math_DecimalPlaces_Max, // use maximum decimal places available
static_cast< sal_Char >( '.' ),
true
);
}
};
/** can be used to find an element with a specific first element in e.g. a
vector of pairs (for searching keys in maps you will of course use map::find)
*/
template< typename First, typename Second >
class FirstOfPairEquals : public ::std::unary_function< ::std::pair< First, Second >, bool >
{
public:
FirstOfPairEquals( const First & aVal )
: m_aValueToCompareWith( aVal )
{}
bool operator() ( const ::std::pair< First, Second > & rElem )
{
return rElem.first == m_aValueToCompareWith;
}
private:
First m_aValueToCompareWith;
};
/** can be used to find a certain value in a map
::std::find_if( aMap.begin(), aMap.end(),
SecondOfPairEquals< string, int >( 42 ));
*/
template< typename Key, typename Value >
class SecondOfPairEquals : public ::std::unary_function< ::std::pair< Key, Value >, bool >
{
public:
SecondOfPairEquals( const Value & aVal )
: m_aValueToCompareWith( aVal )
{}
bool operator() ( const ::std::pair< Key, Value > & rMapElem )
{
return rMapElem.second == m_aValueToCompareWith;
}
private:
Value m_aValueToCompareWith;
};
/** Searches for data in a given map, i.e. not for the key but for the data
pointed to by the keys.
To find a key (value) you can use rMap.find( rValue )
*/
template< class MapType >
inline typename MapType::const_iterator
findValueInMap( const MapType & rMap, const typename MapType::mapped_type & rData )
{
return ::std::find_if( rMap.begin(), rMap.end(),
[&rData]
( const typename MapType::value_type& cp )
{ return rData == cp.second; } );
}
} // namespace CommonFunctors
} // namespace chart
// INCLUDED_CHART2_SOURCE_INC_COMMONFUNCTORS_HXX
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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