105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
/*
|
|
* 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.
|
|
*
|
|
* 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_HMTX_TABLE_HH
|
|
#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 LongMetric
|
|
{
|
|
USHORT advance; /* Advance width/height. */
|
|
SHORT lsb; /* Leading (left/top) side bearing. */
|
|
public:
|
|
DEFINE_SIZE_STATIC (4);
|
|
};
|
|
|
|
struct _mtx
|
|
{
|
|
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) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
/* We don't check for anything specific here. The users of the
|
|
* struct do all the hard work... */
|
|
return_trace (true);
|
|
}
|
|
|
|
public:
|
|
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 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 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 side bearing
|
|
* values for each glyph. */
|
|
public:
|
|
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 */
|