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+/*
+ * Copyright © 2011,2012 Google, Inc.
+ *
+ * This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_OT_HHEA_TABLE_HH
+#define HB_OT_HHEA_TABLE_HH
+
+#include "hb-open-type.hh"
+
+/*
+ * hhea -- Horizontal Header
+ * https://docs.microsoft.com/en-us/typography/opentype/spec/hhea
+ * vhea -- Vertical Header
+ * https://docs.microsoft.com/en-us/typography/opentype/spec/vhea
+ */
+#define HB_OT_TAG_hhea HB_TAG('h','h','e','a')
+#define HB_OT_TAG_vhea HB_TAG('v','h','e','a')
+
+
+namespace OT {
+
+
+template <typename T>
+struct _hea
+{
+ bool has_data () const { return version.major; }
+
+ bool sanitize (hb_sanitize_context_t *c) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (c->check_struct (this) && likely (version.major == 1));
+ }
+
+ public:
+ FixedVersion<>version; /* 0x00010000u for version 1.0. */
+ FWORD ascender; /* Typographic ascent. */
+ FWORD descender; /* Typographic descent. */
+ FWORD lineGap; /* Typographic line gap. */
+ UFWORD advanceMax; /* Maximum advance width/height value in
+ * metrics table. */
+ FWORD minLeadingBearing;
+ /* Minimum left/top sidebearing value in
+ * metrics table. */
+ FWORD minTrailingBearing;
+ /* Minimum right/bottom sidebearing value;
+ * calculated as Min(aw - lsb -
+ * (xMax - xMin)) for horizontal. */
+ FWORD maxExtent; /* horizontal: Max(lsb + (xMax - xMin)),
+ * vertical: minLeadingBearing+(yMax-yMin). */
+ HBINT16 caretSlopeRise; /* Used to calculate the slope of the
+ * cursor (rise/run); 1 for vertical caret,
+ * 0 for horizontal.*/
+ HBINT16 caretSlopeRun; /* 0 for vertical caret, 1 for horizontal. */
+ HBINT16 caretOffset; /* The amount by which a slanted
+ * highlight on a glyph needs
+ * to be shifted to produce the
+ * best appearance. Set to 0 for
+ * non-slanted fonts. */
+ HBINT16 reserved1; /* Set to 0. */
+ HBINT16 reserved2; /* Set to 0. */
+ HBINT16 reserved3; /* Set to 0. */
+ HBINT16 reserved4; /* Set to 0. */
+ HBINT16 metricDataFormat;/* 0 for current format. */
+ HBUINT16 numberOfLongMetrics;
+ /* Number of LongMetric entries in metric
+ * table. */
+ public:
+ DEFINE_SIZE_STATIC (36);
+};
+
+struct hhea : _hea<hhea> {
+ static constexpr hb_tag_t tableTag = HB_OT_TAG_hhea;
+};
+struct vhea : _hea<vhea> {
+ static constexpr hb_tag_t tableTag = HB_OT_TAG_vhea;
+};
+
+
+} /* namespace OT */
+
+
+#endif /* HB_OT_HHEA_TABLE_HH */