1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
--
-- luatexja/ltj-math.lua
--
luatexja.load_module('base'); local ltjb = luatexja.base
luatexja.load_module('direction'); local ltjd = luatexja.direction
luatexja.load_module('charrange'); local ltjc = luatexja.charrange
luatexja.load_module('jfont'); local ltjf = luatexja.jfont
luatexja.load_module('stack'); local ltjs = luatexja.stack
luatexja.load_module('setwidth'); local ltjw = luatexja.setwidth
local setfield = node.direct.setfield
local getfield = node.direct.getfield
local getid = node.direct.getid
local getsubtype = node.direct.getsubtype
local getlist = node.direct.getlist
-- getlist cannot be used for sub_box nodes. Use instead λp. getfield(p, 'head')
local getchar = node.direct.getchar
local to_node = node.direct.tonode
local to_direct = node.direct.todirect
local node_traverse = node.direct.traverse
local node_new = node.direct.new
local node_next = node.direct.getnext
local node_remove = node.direct.remove
local node_free = node.direct.free
local has_attr = node.direct.has_attribute
local set_attr = node.direct.set_attribute
local tex_getcount = tex.getcount
local attr_jchar_class = luatexbase.attributes['ltj@charclass']
local attr_dir = luatexbase.attributes['ltj@dir']
local attr_icflag = luatexbase.attributes['ltj@icflag']
local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
local attr_jfam = luatexbase.attributes['jfam']
local attr_yablshift = luatexbase.attributes['ltj@yablshift']
local id_glyph = node.id('glyph')
local id_hlist = node.id('hlist')
local id_vlist = node.id('vlist')
local id_mchar = node.id('math_char')
local id_sub_box = node.id('sub_box')
local id_radical = node.id('radical')
local id_choice = node.id('choice')
local id_accent = node.id('accent')
local id_style = node.id('style')
local id_frac = node.id('fraction')
local id_simple = node.id('noad')
local id_sub_mlist = node.id('sub_mlist')
local id_whatsit = node.id('whatsit')
local sid_user = node.subtype('user_defined')
local DIR = luatexja.userid_table.DIR
local dir_node_auto = luatexja.dir_table.dir_node_auto
local PROCESSED = luatexja.icflag_table.PROCESSED
local ltjf_font_metric_table = ltjf.font_metric_table
local ltjf_find_char_class = ltjf.find_char_class
local ltjd_get_dir_count = ltjd.get_dir_count
local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
-- table of mathematical characters
local is_math_letters = {}
local list_dir
local function conv_vcenter(sb)
local h = getfield(sb, 'head');local hd = getlist(h)
if getid(hd)==id_whatsit and
getsubtype(hd)==sid_user and getfield(hd, 'user_id')==DIR then
local d = node_next(hd)
if getid(d)==id_vlist and has_attr(d, attr_dir)>=dir_node_auto then
node_free(hd); setfield(h, 'head', nil); node_free(h)
setfield(sb, 'head', d); h = d
end
end
set_attr(h, attr_icflag, PROCESSED)
return sb
end
local conv_jchar_to_hbox_A
-- sty : 0 (display or text), 1 (script), >=2 (scriptscript)
local function conv_jchar_to_hbox(head, sty)
for p in node_traverse(head) do
local pid = getid(p)
if pid == id_simple or pid == id_accent then
if getsubtype(p)==12 then
conv_vcenter(getfield(p, 'nucleus'))
else
setfield(p, 'nucleus', conv_jchar_to_hbox_A(getfield(p, 'nucleus'), sty))
end
setfield(p, 'sub', conv_jchar_to_hbox_A(getfield(p, 'sub'), sty+1))
setfield(p, 'sup', conv_jchar_to_hbox_A(getfield(p, 'sup'), sty+1))
elseif pid == id_choice then
setfield(p, 'display', conv_jchar_to_hbox_A(getfield(p, 'display'), 0))
setfield(p, 'text', conv_jchar_to_hbox_A(getfield(p, 'text'), 0))
setfield(p, 'script', conv_jchar_to_hbox_A(getfield(p, 'script'), 1))
setfield(p, 'scriptscript', conv_jchar_to_hbox_A(getfield(p, 'scriptscript'), 2))
elseif pid == id_frac then
setfield(p, 'num', conv_jchar_to_hbox_A(getfield(p, 'num'), sty+1))
setfield(p, 'denom', conv_jchar_to_hbox_A(getfield(p, 'denom'), sty+1))
elseif pid == id_radical then
setfield(p, 'nucleus', conv_jchar_to_hbox_A(getfield(p, 'nucleus'), sty))
setfield(p, 'sub', conv_jchar_to_hbox_A(getfield(p, 'sub'), sty+1))
setfield(p, 'sup', conv_jchar_to_hbox_A(getfield(p, 'sup'), sty+1))
if getfield(p, 'degree') then
setfield(p, 'degree', conv_jchar_to_hbox_A(getfield(p, 'degree'), sty + 1))
end
elseif pid == id_style then
local ps = getfield(p, 'style')
if ps == "display'" or ps == 'display'
or ps == "text'" or ps == 'text' then
sty = 0
elseif ps == "script'" or ps == 'script' then
sty = 1
else sty = 2
end
end
end
return head
end
local MJT = luatexja.stack_table_index.MJT
local MJS = luatexja.stack_table_index.MJS
local MJSS = luatexja.stack_table_index.MJSS
local capsule_glyph_math = ltjw.capsule_glyph_math
local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
conv_jchar_to_hbox_A =
function (p, sty)
if not p then return nil
else
local pid = getid(p)
if pid == id_sub_mlist then
if getfield(p, 'head') then
setfield(p, 'head', conv_jchar_to_hbox(getfield(p, 'head'), sty))
end
elseif pid == id_mchar then
local fam = has_attr(p, attr_jfam) or -1
local pc = getchar(p)
if (not is_math_letters[pc]) and is_ucs_in_japanese_char(p) and fam>=0 then
local f = ltjs.get_stack_table(MJT + 0x100 * sty + fam, -1, tex_getcount('ltj@@stack'))
if f ~= -1 then
local q = node_new(id_sub_box)
local r = node_new(id_glyph); setfield(r, 'next', nil)
setfield(r, 'char', pc); setfield(r, 'font', f); setfield(r, 'subtype', 256)
local k = has_attr(r,attr_ykblshift) or 0
set_attr(r, attr_ykblshift, 0)
-- ltj-setwidth 内で実際の位置補正はおこなうので，補正量を退避
local met = ltjf_font_metric_table[f]
r = capsule_glyph_math(r, met, met.char_type[ltjf_find_char_class(pc, met)]);
setfield(q, 'head', r); node_free(p); p=q;
set_attr(r, attr_yablshift, k)
end
end
elseif pid == id_sub_box and getfield(p, 'head') then
-- \hbox で直に与えられた内容は上下位置を補正する必要はない
local h = getfield(p, 'head')
h = ltjd_make_dir_whatsit(h, h, list_dir, 'math')
setfield(p, 'head', h)
set_attr(h, attr_icflag, PROCESSED)
end
end
return p
end
luatexbase.add_to_callback('mlist_to_hlist',
function (n, display_type, penalties)
n = to_direct(n); list_dir = ltjd_get_dir_count()
if getid(n)==id_whatsit and getsubtype(n)==sid_user and
getfield(n, 'user_id') == DIR then
local old_n = n; n = node_remove(n, n)
node_free(old_n)
end
return node.mlist_to_hlist(
to_node(conv_jchar_to_hbox(n, 0)),
display_type, penalties)
end,'ltj.mlist_to_hlist', 1)
luatexja.math = { is_math_letters = is_math_letters }
|
