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Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-src/src/ttf/VheaTable.hpp')
| -rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-src/src/ttf/VheaTable.hpp | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/src/ttf/VheaTable.hpp b/Build/source/texk/dvisvgm/dvisvgm-src/src/ttf/VheaTable.hpp new file mode 100644 index 00000000000..3031da49995 --- /dev/null +++ b/Build/source/texk/dvisvgm/dvisvgm-src/src/ttf/VheaTable.hpp @@ -0,0 +1,47 @@ +/************************************************************************* +** VheaTable.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 <limits> +#include "TTFTable.hpp" + +namespace ttf { + +/** This class provides the functions required to write the vertical header table of a TTF/OTF font. + * https://www.microsoft.com/typography/otspec/vhea.htm */ +class VheaTable : public TTFTable { + friend class TTFWriter; + public: + uint32_t tag () const override {return name2id("vhea");} + void write (std::ostream &os) const override; + + protected: + void updateYMinMax (uint32_t c, int16_t ymin, int16_t ymax); + void updateAdvanceHeight (uint16_t h, uint16_t numberOfVMetrics); + + private: + uint16_t _advanceHeightMax = 0; + int16_t _minTopSideBearing = std::numeric_limits<int16_t>::max(); + int16_t _minBottomSideBearing = std::numeric_limits<int16_t>::max(); + int16_t _yMaxExtent = std::numeric_limits<int16_t>::min(); + uint16_t _numberOfVMetrics = 0; +}; + +} // namespace ttf |