Roll Chrome into Mojo.

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

 /*
  * 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.
@@ skipping 17 matching lines @@
 #define HB_OT_HMTX_TABLE_HH
 
 #include "hb-open-type-private.hh"
 
 
 namespace OT {
 
 
 /*
  * hmtx -- The Horizontal Metrics Table
+ * vmtx -- The Vertical Metrics Table
  */
 
 #define HB_OT_TAG_hmtx HB_TAG('h','m','t','x')
+#define HB_OT_TAG_vmtx HB_TAG('v','m','t','x')
 
 
-struct LongHorMetric
+struct LongMetric
 {
-  USHORT        advanceWidth;
-  SHORT         lsb;
+  USHORT        advance; /* Advance width/height. */
+  SHORT         lsb; /* Leading (left/top) side bearing. */
   public:
   DEFINE_SIZE_STATIC (4);
 };
 
-struct hmtx
+struct _mtx
 {
-  static const hb_tag_t tableTag        = HB_OT_TAG_hmtx;
+  static const hb_tag_t tableTag = HB_TAG('_','m','t','x');
+
+  static const hb_tag_t hmtxTag = HB_OT_TAG_hmtx;
+  static const hb_tag_t vmtxTag = HB_OT_TAG_vmtx;
 
   inline bool sanitize (hb_sanitize_context_t *c) {
     TRACE_SANITIZE (this);
     /* We don't check for anything specific here.  The users of the
      * struct do all the hard work... */
     return TRACE_RETURN (true);
   }
 
   public:
-  LongHorMetric longHorMetric[VAR];     /* Paired advance width and left side
+  LongMetric    longMetric[VAR];        /* Paired advance width and leading
                                          * bearing values for each glyph. The
                                          * value numOfHMetrics comes from
                                          * the 'hhea' table. If the font is
                                          * monospaced, only one entry need
                                          * be in the array, but that entry is
                                          * required. The last entry applies to
                                          * all subsequent glyphs. */
-  SHORT         leftSideBearingX[VAR];  /* Here the advanceWidth is assumed
-                                         * to be the same as the advanceWidth
+  SHORT         leadingBearingX[VAR];   /* Here the advance is assumed
+                                         * to be the same as the advance
                                          * for the last entry above. The
                                          * number of entries in this array is
                                          * derived from numGlyphs (from 'maxp'
-                                         * table) minus numberOfHMetrics. This
-                                         * generally is used with a run of
-                                         * monospaced glyphs (e.g., Kanji
+                                         * table) minus numberOfLongMetrics.
+                                         * This generally is used with a run
+                                         * of monospaced glyphs (e.g., Kanji
                                          * fonts or Courier fonts). Only one
                                          * run is allowed and it must be at
                                          * the end. This allows a monospaced
-                                         * font to vary the left side bearing
+                                         * font to vary the side bearing
                                          * values for each glyph. */
   public:
-  DEFINE_SIZE_ARRAY2 (0, longHorMetric, leftSideBearingX);
+  DEFINE_SIZE_ARRAY2 (0, longMetric, leadingBearingX);
 };
 
+struct hmtx : _mtx {
+  static const hb_tag_t tableTag        = HB_OT_TAG_hmtx;
+};
+struct vmtx : _mtx {
+  static const hb_tag_t tableTag        = HB_OT_TAG_vmtx;
+};
 
 } /* namespace OT */
 
 
 #endif /* HB_OT_HMTX_TABLE_HH */