1 files changed, 49 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/src/ttf/HeadTable.hpp b/Build/source/texk/dvisvgm/dvisvgm-src/src/ttf/HeadTable.hpp
new file mode 100644
index 00000000000..6c51957ba0f
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/src/ttf/HeadTable.hpp
@@ -0,0 +1,49 @@
+/*************************************************************************
+** HeadTable.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 font header table of a TTF/OTF font.
+ *  https://www.microsoft.com/typography/otspec/head.htm */
+class HeadTable : public TTFTable {
+	friend class TTFWriter;
+	public:
+		uint32_t tag () const override {return name2id("head");}
+		void updateGlobalBbox (int16_t xmin, int16_t ymin, int16_t xmax, int16_t ymax);
+		void write (std::ostream &os) const override;
+		static int offsetToChecksum () {return 2+2+4;}
+
+	protected:
+		void setLongOffsetFormat () {_indexToLocFormat = 1;}
+
+	private:
+		int16_t _xMin = std::numeric_limits<int16_t>::max();
+		int16_t _yMin = std::numeric_limits<int16_t>::max();
+		int16_t _xMax = std::numeric_limits<int16_t>::min();
+		int16_t _yMax = std::numeric_limits<int16_t>::min();
+		int16_t _indexToLocFormat = 0;  // 0: short (16-bit) format, 1: long (32-bit) format
+};
+
+} // namespace ttf