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diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/src/ttf/HmtxTable.hpp b/Build/source/texk/dvisvgm/dvisvgm-src/src/ttf/HmtxTable.hpp
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+/*************************************************************************
+** HmtxTable.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 horizontal metrics table of a TTF/OTF font.
+ * https://www.microsoft.com/typography/otspec/hmtx.htm */
+class HmtxTable : public TTFTable {
+ friend TTFWriter;
+ struct CharWidthInfo {
+ CharWidthInfo (int16_t l, int16_t w) : lsb(l), advWidth(w) {}
+ uint16_t lsb; // left side bearing
+ uint16_t advWidth; // unscaled advance width
+ };
+ public:
+ uint32_t tag () const override {return name2id("hmtx");}
+ void write (std::ostream &os) const override;
+ bool isFixedPitch () const {return _isFixedPitch;}
+
+ protected:
+ void updateWidthData (uint32_t c, int16_t xmin, int16_t xmax);
+
+ private:
+ std::vector<CharWidthInfo> _widthInfos;
+ size_t _runLengthOfAdvWidth=0; // number of identical advWidth values at end of _widthInfos
+ bool _isFixedPitch=true;
+ int16_t _width=0;
+};
+
+} // namespace ttf