/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project .
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* 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 <sal/config.h>
#include <editeng/EPaM.hxx>
#include <cassert>
#include <utility>
struct ESelection
{
// Select all text
static constexpr ESelection All() { return { 0 , 0 , EE_PARA_MAX, EE_TEXTPOS_MAX }; }
// Set to end without selection
static constexpr ESelection AtEnd() { return { EE_PARA_MAX, EE_TEXTPOS_MAX }; }
EPaM start;
EPaM end;
constexpr ESelection() = default ;
constexpr ESelection(sal_Int32 _nStartPara, sal_Int32 _nStartPos, sal_Int32 _nEndPara,
sal_Int32 _nEndPos)
: start(_nStartPara, _nStartPos)
, end(_nEndPara, _nEndPos)
{
}
constexpr ESelection(sal_Int32 nPara, sal_Int32 nPos)
: ESelection(nPara, nPos, nPara, nPos)
{
}
constexpr explicit ESelection(const EPaM& rPos)
: ESelection(rPos.nPara, rPos.nIndex)
{
}
bool IsAdjusted() const { return !(end < start); }
void Adjust()
{
if (!IsAdjusted())
std::swap(start, end);
}
void CollapseToStart() { end = start; }
void CollapseToEnd() { start = end; }
bool operator ==(const ESelection&) const = default ;
bool operator <(const ESelection& rSelection) const
{
// The selection must be adjusted.
assert(IsAdjusted() && rSelection.IsAdjusted());
// => Only check if end of 'this' < Start of rS
return end < rSelection.start;
}
bool operator >(const ESelection& rSelection) const { return rSelection < *this ; }
bool HasRange() const { return start != end; }
};
template <typename charT, typename traits>
inline std::basic_ostream<charT, traits>& operator <<(std::basic_ostream<charT, traits>& stream,
ESelection const & rSelection)
{
return stream << "ESelection(" << rSelection.start.nPara << ',' << rSelection.start.nIndex
<< "," << rSelection.end.nPara << "," << rSelection.end.nIndex << ")" ;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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