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