2 * Copyright © 2011,2012 Google, Inc.
4 * This is part of HarfBuzz, a text shaping library.
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 * Google Author(s): Behdad Esfahbod
27 #ifndef HB_OT_HMTX_TABLE_HH
28 #define HB_OT_HMTX_TABLE_HH
30 #include "hb-open-type-private.hh"
35 * hmtx -- The Horizontal Metrics Table
38 #define HB_OT_TAG_hmtx HB_TAG('h','m','t','x')
46 DEFINE_SIZE_STATIC (4);
51 static const hb_tag_t Tag = HB_OT_TAG_hmtx;
53 inline bool sanitize (hb_sanitize_context_t *c) {
55 /* We don't check for anything specific here. The users of the
56 * struct do all the hard work... */
57 return TRACE_RETURN (true);
61 LongHorMetric longHorMetric[VAR]; /* Paired advance width and left side
62 * bearing values for each glyph. The
63 * value numOfHMetrics comes from
64 * the 'hhea' table. If the font is
65 * monospaced, only one entry need
66 * be in the array, but that entry is
67 * required. The last entry applies to
68 * all subsequent glyphs. */
69 SHORT leftSideBearingX[VAR]; /* Here the advanceWidth is assumed
70 * to be the same as the advanceWidth
71 * for the last entry above. The
72 * number of entries in this array is
73 * derived from numGlyphs (from 'maxp'
74 * table) minus numberOfHMetrics. This
75 * generally is used with a run of
76 * monospaced glyphs (e.g., Kanji
77 * fonts or Courier fonts). Only one
78 * run is allowed and it must be at
79 * the end. This allows a monospaced
80 * font to vary the left side bearing
81 * values for each glyph. */
83 DEFINE_SIZE_ARRAY2 (0, longHorMetric, leftSideBearingX);
86 #endif /* HB_OT_HMTX_TABLE_HH */