michael@0: /*
michael@0:  * Copyright © 2011,2012  Google, Inc.
michael@0:  *
michael@0:  *  This is part of HarfBuzz, a text shaping library.
michael@0:  *
michael@0:  * Permission is hereby granted, without written agreement and without
michael@0:  * license or royalty fees, to use, copy, modify, and distribute this
michael@0:  * software and its documentation for any purpose, provided that the
michael@0:  * above copyright notice and the following two paragraphs appear in
michael@0:  * all copies of this software.
michael@0:  *
michael@0:  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
michael@0:  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
michael@0:  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
michael@0:  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
michael@0:  * DAMAGE.
michael@0:  *
michael@0:  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
michael@0:  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
michael@0:  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
michael@0:  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
michael@0:  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
michael@0:  *
michael@0:  * Google Author(s): Behdad Esfahbod
michael@0:  */
michael@0: 
michael@0: #ifndef HB_OT_HMTX_TABLE_HH
michael@0: #define HB_OT_HMTX_TABLE_HH
michael@0: 
michael@0: #include "hb-open-type-private.hh"
michael@0: 
michael@0: 
michael@0: namespace OT {
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * hmtx -- The Horizontal Metrics Table
michael@0:  */
michael@0: 
michael@0: #define HB_OT_TAG_hmtx HB_TAG('h','m','t','x')
michael@0: 
michael@0: 
michael@0: struct LongHorMetric
michael@0: {
michael@0:   USHORT	advanceWidth;
michael@0:   SHORT		lsb;
michael@0:   public:
michael@0:   DEFINE_SIZE_STATIC (4);
michael@0: };
michael@0: 
michael@0: struct hmtx
michael@0: {
michael@0:   static const hb_tag_t tableTag	= HB_OT_TAG_hmtx;
michael@0: 
michael@0:   inline bool sanitize (hb_sanitize_context_t *c) {
michael@0:     TRACE_SANITIZE (this);
michael@0:     /* We don't check for anything specific here.  The users of the
michael@0:      * struct do all the hard work... */
michael@0:     return TRACE_RETURN (true);
michael@0:   }
michael@0: 
michael@0:   protected:
michael@0:   LongHorMetric	longHorMetric[VAR];	/* Paired advance width and left side
michael@0: 					 * bearing values for each glyph. The
michael@0: 					 * value numOfHMetrics comes from
michael@0: 					 * the 'hhea' table. If the font is
michael@0: 					 * monospaced, only one entry need
michael@0: 					 * be in the array, but that entry is
michael@0: 					 * required. The last entry applies to
michael@0: 					 * all subsequent glyphs. */
michael@0:   SHORT		leftSideBearingX[VAR];	/* Here the advanceWidth is assumed
michael@0: 					 * to be the same as the advanceWidth
michael@0: 					 * for the last entry above. The
michael@0: 					 * number of entries in this array is
michael@0: 					 * derived from numGlyphs (from 'maxp'
michael@0: 					 * table) minus numberOfHMetrics. This
michael@0: 					 * generally is used with a run of
michael@0: 					 * monospaced glyphs (e.g., Kanji
michael@0: 					 * fonts or Courier fonts). Only one
michael@0: 					 * run is allowed and it must be at
michael@0: 					 * the end. This allows a monospaced
michael@0: 					 * font to vary the left side bearing
michael@0: 					 * values for each glyph. */
michael@0:   public:
michael@0:   DEFINE_SIZE_ARRAY2 (0, longHorMetric, leftSideBearingX);
michael@0: };
michael@0: 
michael@0: 
michael@0: } /* namespace OT */
michael@0: 
michael@0: 
michael@0: #endif /* HB_OT_HMTX_TABLE_HH */