Update harfbuzz-ng to 1a5a91dc0d8bf4b72a2f22dc6300b06ad7000b79.

third_party/harfbuzz-ng/src/hb-ot-hhea-table.hh

+/*
+ * Copyright © 2011  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-private.hh"
+
+
+
+/*
+ * hhea -- The Horizontal Header Table
+ */
+
+#define HB_OT_TAG_hhea HB_TAG('h','h','e','a')
+
+
+struct hhea
+{
+  static const hb_tag_t Tag     = HB_OT_TAG_hhea;
+
+  inline bool sanitize (hb_sanitize_context_t *c) {
+    TRACE_SANITIZE ();
+    return c->check_struct (this) && likely (version.major == 1);
+  }
+
+  private:
+  FixedVersion  version;                /* 0x00010000 for version 1.0. */
+  FWORD         ascender;               /* Typographic ascent. <a
+                                         * href="http://developer.apple.com/fonts/TTRefMan/RM06/Chap6hhea.html">
+                                         * (Distance from baseline of highest
+                                         * ascender)</a> */
+  FWORD         descender;              /* Typographic descent. <a
+                                         * href="http://developer.apple.com/fonts/TTRefMan/RM06/Chap6hhea.html">
+                                         * (Distance from baseline of lowest
+                                         * descender)</a> */
+  FWORD         lineGap;                /* Typographic line gap. Negative
+                                         * LineGap values are treated as zero
+                                         * in Windows 3.1, System 6, and
+                                         * System 7. */
+  UFWORD        advanceWidthMax;        /* Maximum advance width value in
+                                         * 'hmtx' table. */
+  FWORD         minLeftSideBearing;     /* Minimum left sidebearing value in
+                                         * 'hmtx' table. */
+  FWORD         minRightSideBearing;    /* Minimum right sidebearing value;
+                                         * calculated as Min(aw - lsb -
+                                         * (xMax - xMin)). */
+  FWORD         xMaxExtent;             /* Max(lsb + (xMax - xMin)). */
+  SHORT         caretSlopeRise;         /* Used to calculate the slope of the
+                                         * cursor (rise/run); 1 for vertical. */
+  SHORT         caretSlopeRun;          /* 0 for vertical. */
+  SHORT         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 */
+  SHORT         reserved1;              /* set to 0 */
+  SHORT         reserved2;              /* set to 0 */
+  SHORT         reserved3;              /* set to 0 */
+  SHORT         reserved4;              /* set to 0 */
+  SHORT         metricDataFormat;       /* 0 for current format. */
+  USHORT        numberOfHMetrics;       /* Number of hMetric entries in 'hmtx'
+                                         * table */
+  public:
+  DEFINE_SIZE_STATIC (36);
+};
+
+
+#endif /* HB_OT_HHEA_TABLE_HH */