vcl/inc/ImplLayoutRuns.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <vcl/dllapi.h>
  23
  24 #include <vector>
  25
  26 // used for managing runs e.g. for BiDi, glyph and script fallback
  27 class VCL_DLLPUBLIC ImplLayoutRuns
  28 {
  29 private:
  30     int mnRunIndex;
  31     std::vector<int> maRuns;
  32
  33 public:
  34     ImplLayoutRuns()
  35     {
  36         mnRunIndex = 0;
  37         maRuns.reserve(8);
  38     }
  39
  40     void Clear() { maRuns.clear(); }
  41     void AddPos(int nCharPos, bool bRTL);
  42     void AddRun(int nMinRunPos, int nEndRunPos, bool bRTL);
  43
  44     bool IsEmpty() const { return maRuns.empty(); }
  45     void ResetPos() { mnRunIndex = 0; }
  46     void NextRun() { mnRunIndex += 2; }
  47     bool GetRun(int* nMinRunPos, int* nEndRunPos, bool* bRTL) const;
  48     bool GetNextPos(int* nCharPos, bool* bRTL);
  49     bool PosIsInRun(int nCharPos) const;
  50     bool PosIsInAnyRun(int nCharPos) const;
  51 };
  52
  53 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */