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/*************************************************************************
** LocaTable.hpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2023 Martin Gieseking <martin.gieseking@uos.de> **
** **
** This program is free software; you can redistribute it and/or **
** modify it under the terms of the GNU General Public License as **
** published by the Free Software Foundation; either version 3 of **
** the License, or (at your option) any later version. **
** **
** This program is distributed in the hope that it will be useful, but **
** WITHOUT ANY WARRANTY; without even the implied warranty of **
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **
** GNU General Public License for more details. **
** **
** You should have received a copy of the GNU General Public License **
** along with this program; if not, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#pragma once
#include <vector>
#include "TTFTable.hpp"
namespace ttf {
/** This class provides the functions required to write the loca table of a TTF/OTF font.
* https://www.microsoft.com/typography/otspec/loca.htm */
class LocaTable : public TTFTable {
friend class TTFWriter;
public:
uint32_t tag () const override {return name2id("loca");}
void write (std::ostream &os) const override {
for (uint32_t offs : _offsets) {
if (_isShortFormat)
writeUInt16(os, offs/2);
else
writeUInt32(os, offs);
}
}
protected:
void addOffset (uint32_t offset) {
_offsets.push_back(offset);
if (offset/2 > 0xFFFF)
_isShortFormat = false;
}
private:
bool _isShortFormat=true;
std::vector<uint32_t> _offsets;
};
} // namespace ttf
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