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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 <vcl/dllapi.h>
#include <boost/container/small_vector.hpp>
// used for managing runs e.g. for BiDi, glyph and script fallback
class VCL_DLLPUBLIC ImplLayoutRuns
{
public:
struct Run
{
int m_nMinRunPos;
int m_nEndRunPos;
bool m_bRTL;
Run(int nMinRunPos, int nEndRunPos, bool bRTL)
: m_nMinRunPos(nMinRunPos)
, m_nEndRunPos(nEndRunPos)
, m_bRTL(bRTL)
{
}
inline bool Contains(int nCharPos) const
{
return (m_nMinRunPos <= nCharPos) && (nCharPos < m_nEndRunPos);
}
bool operator==(const Run&) const = default;
};
private:
int mnRunIndex;
boost::container::small_vector<Run, 8> maRuns;
public:
ImplLayoutRuns() { mnRunIndex = 0; }
void Clear() { maRuns.clear(); }
void AddPos(int nCharPos, bool bRTL);
void AddRun(int nMinRunPos, int nEndRunPos, bool bRTL);
void Normalize();
void ReverseTail(size_t nTailIndex);
bool IsEmpty() const { return maRuns.empty(); }
void ResetPos() { mnRunIndex = 0; }
void NextRun() { ++mnRunIndex; }
bool GetRun(int* nMinRunPos, int* nEndRunPos, bool* bRTL) const;
bool GetNextPos(int* nCharPos, bool* bRTL);
bool PosIsInRun(int nCharPos) const;
bool PosIsInAnyRun(int nCharPos) const;
inline auto begin() const { return maRuns.begin(); }
inline auto end() const { return maRuns.end(); }
inline const auto& at(size_t nIndex) const { return maRuns.at(nIndex); }
inline auto size() const { return maRuns.size(); }
static void PrepareFallbackRuns(ImplLayoutRuns* paRuns, ImplLayoutRuns* paFallbackRuns);
};
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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