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Diffstat (limited to 'dviware/dvisvgm/src/ttf/LocaTable.hpp')
-rw-r--r-- | dviware/dvisvgm/src/ttf/LocaTable.hpp | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/ttf/LocaTable.hpp b/dviware/dvisvgm/src/ttf/LocaTable.hpp new file mode 100644 index 0000000000..8ff51a7bb1 --- /dev/null +++ b/dviware/dvisvgm/src/ttf/LocaTable.hpp @@ -0,0 +1,56 @@ +/************************************************************************* +** 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 |