ImplLayoutRuns.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * 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
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 *   License, Version 2.0 (the "License"); you may not use this file
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#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
{
private:
    int mnRunIndex;
    boost::container::small_vector<int, 8> maRuns;
 
public:
    ImplLayoutRuns() { mnRunIndex = 0; }
 
    void Clear() { maRuns.clear(); }
    void AddPos(int nCharPos, bool bRTL);
    void AddRun(int nMinRunPos, int nEndRunPos, bool bRTL);
 
    bool IsEmpty() const { return maRuns.empty(); }
    void ResetPos() { mnRunIndex = 0; }
    void NextRun() { mnRunIndex += 2; }
    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;
};
 
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