123 lines
3.8 KiB
C++
123 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <o3tl/any.hxx>
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#include <rtl/math.hxx>
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#include <com/sun/star/uno/Any.hxx>
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#include <com/sun/star/uno/Sequence.hxx>
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#include <rtl/ustring.hxx>
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#include "charttoolsdllapi.hxx"
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#include <algorithm>
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#include <limits>
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namespace chart::CommonFunctors
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{
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/** unary function to convert any type T into a css::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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struct makeAny
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{
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template< typename T >
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css::uno::Any operator() ( const T & aVal )
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{
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return css::uno::Any( aVal );
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}
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};
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/** unary function to convert an OUString or css::uno::Any into a double number.
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<p>For conversion of OUString, rtl::math::StringToDouble is used.</p>
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<p>In case no number can be generated from the Any, NaN is returned.</p>
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*/
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struct OOO_DLLPUBLIC_CHARTTOOLS ToDouble
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{
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double operator() ( const css::uno::Any & rAny )
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{
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double fResult = std::numeric_limits<double>::quiet_NaN();
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rAny >>= fResult;
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return fResult;
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}
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double operator() ( std::u16string_view rStr )
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{
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rtl_math_ConversionStatus eConversionStatus;
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double fResult = ::rtl::math::stringToDouble( rStr, '.', ',', & eConversionStatus );
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if( eConversionStatus != rtl_math_ConversionStatus_Ok )
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return std::numeric_limits<double>::quiet_NaN();
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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 or css::uno::Any into an OUString.
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<p>For conversion of doubles, rtl::math::DoubleToOUString is used.</p>
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*/
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struct OOO_DLLPUBLIC_CHARTTOOLS ToString
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{
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OUString operator() ( const css::uno::Any & rAny )
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{
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if( auto pDouble = o3tl::tryAccess<double>(rAny) )
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{
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if( std::isnan(*pDouble) )
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return 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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rtl_math_DecimalPlaces_Max, // use maximum decimal places available
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'.', // decimal separator
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true // remove trailing zeros
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);
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}
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else if( auto s = o3tl::tryAccess<OUString>(rAny) )
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{
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return *s;
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}
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return OUString();
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}
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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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rtl_math_DecimalPlaces_Max, // use maximum decimal places available
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'.',
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true
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);
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}
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};
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template <class Container, class Func> auto convertToSequence(const Container& container, Func f)
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{
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css::uno::Sequence<decltype(f(container[0]))> result(container.size());
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std::transform(container.begin(), container.end(), result.getArray(), f);
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return result;
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}
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} // namespace chart::CommonFunctors
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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