87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
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/*
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* Copyright © 2011 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Google Author(s): Behdad Esfahbod
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*/
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#ifndef HB_OT_HMTX_TABLE_HH
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#define HB_OT_HMTX_TABLE_HH
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#include "hb-open-type-private.hh"
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/*
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* hmtx -- The Horizontal Metrics Table
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*/
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#define HB_OT_TAG_hmtx HB_TAG('h','m','t','x')
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struct LongHorMetric
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{
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USHORT advanceWidth;
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SHORT lsb;
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public:
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DEFINE_SIZE_STATIC (4);
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};
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struct hmtx
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{
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static const hb_tag_t Tag = HB_OT_TAG_hmtx;
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inline bool sanitize (hb_sanitize_context_t *c) {
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TRACE_SANITIZE ();
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/* We don't check for anything specific here. The users of the
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* struct do all the hard work... */
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return true;
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}
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private:
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LongHorMetric longHorMetric[VAR]; /* Paired advance width and left side
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* bearing values for each glyph. The
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* value numOfHMetrics comes from
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* the 'hhea' table. If the font is
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* monospaced, only one entry need
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* be in the array, but that entry is
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* required. The last entry applies to
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* all subsequent glyphs. */
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SHORT leftSideBearingX[VAR]; /* Here the advanceWidth is assumed
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* to be the same as the advanceWidth
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* for the last entry above. The
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* number of entries in this array is
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* derived from numGlyphs (from 'maxp'
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* table) minus numberOfHMetrics. This
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* generally is used with a run of
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* monospaced glyphs (e.g., Kanji
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* fonts or Courier fonts). Only one
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* run is allowed and it must be at
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* the end. This allows a monospaced
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* font to vary the left side bearing
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* values for each glyph. */
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public:
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DEFINE_SIZE_ARRAY2 (0, longHorMetric, leftSideBearingX);
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};
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#endif /* HB_OT_HMTX_TABLE_HH */
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