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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 .
*/
#pragma once
#include <o3tl/any.hxx>
#include <rtl/math.hxx>
#include <com/sun/star/uno/Any.hxx>
#include <rtl/ustring.hxx>
#include "charttoolsdllapi.hxx"
#include <limits>
namespace chart::CommonFunctors
{
/** unary function to convert any type T into a css::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
{
css::uno::Any operator() ( const T & aVal )
{
return css::uno::Any( aVal );
}
};
/** unary function to convert css::uno::Any into a double number.
<p>In case no number can be generated from the Any, NaN is returned.</p>
*/
struct OOO_DLLPUBLIC_CHARTTOOLS AnyToDouble
{
double operator() ( const css::uno::Any & rAny )
{
double fResult = std::numeric_limits<double>::quiet_NaN();
rAny >>= fResult;
return fResult;
}
};
/** unary function to convert css::uno::Any into an
OUString.
*/
struct OOO_DLLPUBLIC_CHARTTOOLS AnyToString
{
OUString operator() ( const css::uno::Any & rAny )
{
if( auto pDouble = o3tl::tryAccess<double>(rAny) )
{
if( std::isnan(*pDouble) )
return OUString();
return ::rtl::math::doubleToUString(
* pDouble,
rtl_math_StringFormat_Automatic,
rtl_math_DecimalPlaces_Max, // use maximum decimal places available
'.', // decimal separator
true // remove trailing zeros
);
}
else if( auto s = o3tl::tryAccess<OUString>(rAny) )
{
return *s;
}
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
{
double operator() ( std::u16string_view rStr )
{
rtl_math_ConversionStatus eConversionStatus;
double fResult = ::rtl::math::stringToDouble( rStr, '.', ',', & eConversionStatus );
if( eConversionStatus != rtl_math_ConversionStatus_Ok )
return std::numeric_limits<double>::quiet_NaN();
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
{
OUString operator() ( double fNumber )
{
return ::rtl::math::doubleToUString(
fNumber,
rtl_math_StringFormat_Automatic,
rtl_math_DecimalPlaces_Max, // use maximum decimal places available
'.',
true
);
}
};
} // namespace chart::CommonFunctors
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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