172 lines
4.8 KiB
C++
172 lines
4.8 KiB
C++
/*
|
|
* Copyright © 2018 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_SHAPE_COMPLEX_MYANMAR_HH
|
|
#define HB_OT_SHAPE_COMPLEX_MYANMAR_HH
|
|
|
|
#include "hb.hh"
|
|
|
|
#include "hb-ot-shape-complex-indic.hh"
|
|
|
|
|
|
/* buffer var allocations */
|
|
#define myanmar_category() indic_category() /* myanmar_category_t */
|
|
#define myanmar_position() indic_position() /* myanmar_position_t */
|
|
|
|
|
|
/* Note: This enum is duplicated in the -machine.rl source file.
|
|
* Not sure how to avoid duplication. */
|
|
enum myanmar_category_t {
|
|
OT_As = 18, /* Asat */
|
|
OT_D0 = 20, /* Digit zero */
|
|
OT_DB = OT_N, /* Dot below */
|
|
OT_GB = OT_PLACEHOLDER,
|
|
OT_MH = 21, /* Various consonant medial types */
|
|
OT_MR = 22, /* Various consonant medial types */
|
|
OT_MW = 23, /* Various consonant medial types */
|
|
OT_MY = 24, /* Various consonant medial types */
|
|
OT_PT = 25, /* Pwo and other tones */
|
|
//OT_VAbv = 26,
|
|
//OT_VBlw = 27,
|
|
//OT_VPre = 28,
|
|
//OT_VPst = 29,
|
|
OT_VS = 30, /* Variation selectors */
|
|
OT_P = 31, /* Punctuation */
|
|
OT_D = 32, /* Digits except zero */
|
|
};
|
|
|
|
|
|
static inline void
|
|
set_myanmar_properties (hb_glyph_info_t &info)
|
|
{
|
|
hb_codepoint_t u = info.codepoint;
|
|
unsigned int type = hb_indic_get_categories (u);
|
|
unsigned int cat = type & 0xFFu;
|
|
indic_position_t pos = (indic_position_t) (type >> 8);
|
|
|
|
/* Myanmar
|
|
* https://docs.microsoft.com/en-us/typography/script-development/myanmar#analyze
|
|
*/
|
|
if (unlikely (hb_in_range<hb_codepoint_t> (u, 0xFE00u, 0xFE0Fu)))
|
|
cat = OT_VS;
|
|
|
|
switch (u)
|
|
{
|
|
case 0x104Eu:
|
|
cat = OT_C; /* The spec says C, IndicSyllableCategory doesn't have. */
|
|
break;
|
|
|
|
case 0x002Du: case 0x00A0u: case 0x00D7u: case 0x2012u:
|
|
case 0x2013u: case 0x2014u: case 0x2015u: case 0x2022u:
|
|
case 0x25CCu: case 0x25FBu: case 0x25FCu: case 0x25FDu:
|
|
case 0x25FEu:
|
|
cat = OT_GB;
|
|
break;
|
|
|
|
case 0x1004u: case 0x101Bu: case 0x105Au:
|
|
cat = OT_Ra;
|
|
break;
|
|
|
|
case 0x1032u: case 0x1036u:
|
|
cat = OT_A;
|
|
break;
|
|
|
|
case 0x1039u:
|
|
cat = OT_H;
|
|
break;
|
|
|
|
case 0x103Au:
|
|
cat = OT_As;
|
|
break;
|
|
|
|
case 0x1041u: case 0x1042u: case 0x1043u: case 0x1044u:
|
|
case 0x1045u: case 0x1046u: case 0x1047u: case 0x1048u:
|
|
case 0x1049u: case 0x1090u: case 0x1091u: case 0x1092u:
|
|
case 0x1093u: case 0x1094u: case 0x1095u: case 0x1096u:
|
|
case 0x1097u: case 0x1098u: case 0x1099u:
|
|
cat = OT_D;
|
|
break;
|
|
|
|
case 0x1040u:
|
|
cat = OT_D; /* XXX The spec says D0, but Uniscribe doesn't seem to do. */
|
|
break;
|
|
|
|
case 0x103Eu: case 0x1060u:
|
|
cat = OT_MH;
|
|
break;
|
|
|
|
case 0x103Cu:
|
|
cat = OT_MR;
|
|
break;
|
|
|
|
case 0x103Du: case 0x1082u:
|
|
cat = OT_MW;
|
|
break;
|
|
|
|
case 0x103Bu: case 0x105Eu: case 0x105Fu:
|
|
cat = OT_MY;
|
|
break;
|
|
|
|
case 0x1063u: case 0x1064u: case 0x1069u: case 0x106Au:
|
|
case 0x106Bu: case 0x106Cu: case 0x106Du: case 0xAA7Bu:
|
|
cat = OT_PT;
|
|
break;
|
|
|
|
case 0x1038u: case 0x1087u: case 0x1088u: case 0x1089u:
|
|
case 0x108Au: case 0x108Bu: case 0x108Cu: case 0x108Du:
|
|
case 0x108Fu: case 0x109Au: case 0x109Bu: case 0x109Cu:
|
|
cat = OT_SM;
|
|
break;
|
|
|
|
case 0x104Au: case 0x104Bu:
|
|
cat = OT_P;
|
|
break;
|
|
|
|
case 0xAA74u: case 0xAA75u: case 0xAA76u:
|
|
/* https://github.com/harfbuzz/harfbuzz/issues/218 */
|
|
cat = OT_C;
|
|
break;
|
|
}
|
|
|
|
if (cat == OT_M)
|
|
{
|
|
switch ((int) pos)
|
|
{
|
|
case POS_PRE_C: cat = (myanmar_category_t) OT_VPre;
|
|
pos = POS_PRE_M; break;
|
|
case POS_ABOVE_C: cat = (myanmar_category_t) OT_VAbv; break;
|
|
case POS_BELOW_C: cat = (myanmar_category_t) OT_VBlw; break;
|
|
case POS_POST_C: cat = (myanmar_category_t) OT_VPst; break;
|
|
}
|
|
}
|
|
|
|
info.myanmar_category() = cat;
|
|
info.myanmar_position() = pos;
|
|
}
|
|
|
|
|
|
#endif /* HB_OT_SHAPE_COMPLEX_MYANMAR_HH */
|