4 luatexbase.provides_module({
5 name = 'luatexja.jfont',
7 description = 'Loader for Japanese fonts',
9 module('luatexja.jfont', package.seeall)
11 luatexja.load_module('base'); local ltjb = luatexja.base
12 luatexja.load_module('charrange'); local ltjc = luatexja.charrange
13 luatexja.load_module('rmlgbm'); local ltjr = luatexja.rmlgbm
14 luatexja.load_module('direction'); local ltjd = luatexja.direction
17 local Dnode = node.direct or node
19 local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
20 local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
21 local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
22 local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
24 local nullfunc = function(n) return n end
25 local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
27 local node_new = Dnode.new
28 local node_free = Dnode.free
29 local has_attr = Dnode.has_attribute
30 local set_attr = Dnode.set_attribute
31 local node_write = Dnode.write
32 local round = tex.round
33 local font_getfont = font.getfont
35 local attr_icflag = luatexbase.attributes['ltj@icflag']
36 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
37 local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
38 local id_glyph = node.id('glyph')
39 local id_kern = node.id('kern')
40 local id_glue_spec = node.id('glue_spec')
41 local id_glue = node.id('glue')
42 local cat_lp = luatexbase.catcodetables['latex-package']
43 local ITALIC = luatexja.icflag_table.ITALIC
44 local FROM_JFM = luatexja.icflag_table.FROM_JFM
46 ------------------------------------------------------------------------
48 ------------------------------------------------------------------------
50 metrics={} -- this table stores all metric informations
51 font_metric_table={} -- [font number] -> jfm_name, jfm_var, size
53 luatexbase.create_callback("luatexja.load_jfm", "data", function (ft, jn) return ft end)
55 local jfm_file_name, jfm_var
57 local jfm_dir, is_def_jfont
59 function define_jfm(t)
60 local real_char -- Does current character class have the 'real' character?
61 if t.dir~=jfm_dir then
62 defjfm_res= nil; return
63 elseif type(t.zw)~='number' or type(t.zh)~='number' then
64 defjfm_res= nil; return
66 t.char_type = {}; t.chars = {}
67 for i,v in pairs(t) do
68 if type(i) == 'number' then -- char_type
70 if i ~= 0 then defjfm_res= nil; return end
74 for j,w in pairs(v.chars) do
75 if type(w) == 'number' and w~=-1 then
77 elseif type(w) == 'string' and utf.len(w)==1 then
78 real_char = true; w = utf.byte(w)
79 elseif type(w) == 'string' and utf.len(w)==2 and utf.sub(w,2) == '*' then
80 real_char = true; w = utf.byte(utf.sub(w,1,1))
82 if not t.chars[w] then
85 defjfm_res= nil; return
88 if type(v.align)~='string' then
89 v.align = 'left' -- left
92 if type(v.width)~='number' and v.width~='prop' then
93 defjfm_res= nil; return
95 if v.width=='prop' and jfm_dir=='tate' then
98 if type(v.height)~='number' then
101 if type(v.depth)~='number' then
104 if type(v.italic)~='number' then
107 if type(v.left)~='number' then
110 if type(v.down)~='number' then
117 v.kern = v.kern or {}; v.glue = v.glue or {}
118 for j in pairs(v.glue) do
119 if v.kern[j] then defjfm_res= nil; return end
121 for j,x in pairs(v.kern) do
122 if type(x)=='number' then
124 elseif type(x)=='table' then
125 v.kern[j] = {x[1], x[2] or 0}
132 t = luatexbase.call_callback("luatexja.load_jfm", t, jfm_file_name)
137 local update_jfm_cache
139 local function mult_table(old,scale) -- modified from table.fastcopy
142 for k,v in next, old do
143 if type(v) == "table" then
144 new[k] = mult_table(v,scale)
145 elseif type(v) == "number" then
146 new[k] = round(v*scale)
155 update_jfm_cache = function (j,sz)
156 if metrics[j].size_cache[sz] then return end
158 metrics[j].size_cache[sz] = t
159 t.chars = metrics[j].chars
160 t.char_type = mult_table(metrics[j].char_type, sz)
161 for i,v in pairs(t.char_type) do
162 v.align = (v.align=='left') and 0 or
163 ((v.align=='right') and 1 or 0.5)
164 if type(i) == 'number' then -- char_type
165 for k,w in pairs(v.glue) do
166 local h = node_new(id_glue_spec)
167 v[k] = {true, h, (w[5] and w[5]/sz or 0), FROM_JFM + (w[4] and w[4]/sz or 0)}
168 setfield(h, 'width', w[1])
169 setfield(h, 'stretch', w[2])
170 setfield(h, 'shrink', w[3])
171 setfield(h, 'stretch_order', 0)
172 setfield(h, 'shrink_order', 0)
174 for k,w in pairs(v.kern) do
175 local g = node_new(id_kern)
176 setfield(g, 'kern', w[1])
177 setfield(g, 'subtype', 1)
178 set_attr(g, attr_icflag, FROM_JFM)
179 v[k] = {false, g, w[2]/sz}
182 v.glue, v.kern = nil, nil
184 t.kanjiskip = mult_table(metrics[j].kanjiskip, sz)
185 t.xkanjiskip = mult_table(metrics[j].xkanjiskip,sz)
186 t.zw = round(metrics[j].zw*sz)
187 t.zh = round(metrics[j].zh*sz)
192 luatexbase.create_callback("luatexja.find_char_class", "data",
193 function (arg, fmtable, char)
197 local start_time_measure = ltjb.start_time_measure
198 local stop_time_measure = ltjb.stop_time_measure
199 local fcc_temp = { chars_cbcache = {} }
201 fcc_temp.chars_cbcache,
203 __index = function () return 0 end,
205 function find_char_class(c,m)
206 -- c: character code, m:
207 local r = (m or fcc_temp).chars_cbcache[c]
210 luatexbase.call_callback("luatexja.find_char_class", 0, m, c)
211 m.chars_cbcache[c or 0] = r
218 ------------------------------------------------------------------------
219 -- LOADING JAPANESE FONTS
220 ------------------------------------------------------------------------
224 local global_flag -- true if \globaljfont, false if \jfont
225 local function load_jfont_metric()
226 if jfm_file_name=='' then
227 ltjb.package_error('luatexja',
229 'To load and define a Japanese font, a JFM must be specified.'..
230 "The JFM 'ujis' will be used for now.")
233 for j,v in ipairs(metrics) do
234 if v.name==jfm_file_name then return j end
236 luatexja.load_lua('jfm-' .. jfm_file_name .. '.lua')
238 defjfm_res.name = jfm_file_name
239 table.insert(metrics, defjfm_res)
247 function jfontdefX(g, dir)
248 jfm_dir, is_def_jfont = dir, true
249 local t = token.get_next()
250 cstemp=token.csname_name(t)
251 global_flag = g and '\\global' or ''
252 tex.sprint(cat_lp, '\\expandafter\\font\\csname ', cstemp, '\\endcsname')
255 luatexbase.create_callback("luatexja.define_jfont", "data", function (ft, fn) return ft end)
258 local identifiers = fonts.hashes.identifiers
260 local j = load_jfont_metric(jfm_dir)
261 local fn = font.id(cstemp)
262 local f = font_getfont(fn)
264 ltjb.package_error('luatexja',
265 "bad JFM `" .. jfm_file_name .. "'",
266 'The JFM file you specified is not valid JFM file.\n'..
267 'So defining Japanese font is cancelled.')
268 tex.sprint(cat_lp, global_flag, '\\expandafter\\let\\csname ', cstemp,
269 '\\endcsname=\\relax')
272 update_jfm_cache(j, f.size)
273 local ad = identifiers[fn].parameters
274 local sz = metrics[j].size_cache[f.size]
275 local fmtable = { jfm = j, size = f.size, var = jfm_var,
276 zw = sz.zw, zh = sz.zh,
277 ascent = ad.ascender,
278 descent = ad.descender,
279 chars = sz.chars, char_type = sz.char_type,
280 kanjiskip = sz.kanjiskip, xkanjiskip = sz.xkanjiskip,
284 fmtable = luatexbase.call_callback("luatexja.define_jfont", fmtable, fn)
285 font_metric_table[fn]=fmtable
286 tex.sprint(cat_lp, global_flag, '\\protected\\expandafter\\def\\csname ',
287 cstemp , '\\endcsname{\\ltj@cur'..
288 (jfm_dir == 'yoko' and 'j' or 't') .. 'fnt', fn, '\\relax}')
293 local get_dir_count = ltjd.get_dir_count
294 local dir_tate = luatexja.dir_table.dir_tate
295 local tex_get_attr = tex.getattribute
298 local a = font_metric_table[
299 tex_get_attr((get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)]
300 return a and a.zw or 0
303 local a = font_metric_table[
304 tex_get_attr((get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)]
305 return a and a.zw or 0
310 -- extract jfm_file_name and jfm_var
311 -- normalize position of 'jfm=' and 'jfmvar=' keys
312 local function extract_metric(name)
313 jfm_file_name = ''; jfm_var = ''
314 local tmp, index = name:sub(1, 5), 1
315 if tmp == 'file:' or tmp == 'name:' or tmp == 'psft:' then
318 local p = name:find(":", index); index = p and (p+1) or index
320 local l = name:len()+1
321 local q = name:find(";", index+1) or l
322 if name:sub(index, index+3)=='jfm=' and q>index+4 then
323 jfm_file_name = name:sub(index+4, q-1)
325 name = name:sub(1,index-1) .. name:sub(q+1)
327 name = name:sub(1,index-1)
330 elseif name:sub(index, index+6)=='jfmvar=' and q>index+6 then
331 jfm_var = name:sub(index+7, q-1)
333 name = name:sub(1,index-1) .. name:sub(q+1)
335 name = name:sub(1,index-1)
339 index = (l~=q) and (q+1) or nil
342 if jfm_file_name~='' then
343 local l = name:sub(-1)
345 .. ((l==':' or l==';') and '' or ';')
346 .. 'jfm=' .. jfm_file_name
348 name = name .. 'jfmvar=' .. jfm_var
351 if jfm_dir == 'tate' then
352 if not name:match('vert') and not name:match('vrt2') then
353 name = name .. ';vert;vrt2'
359 -- define_font callback
360 local otfl_fdr = fonts.definers.read
361 local ltjr_font_callback = ltjr.font_callback
362 function luatexja.font_callback(name, size, id)
363 local new_name = is_def_jfont and extract_metric(name) or name
365 local res = ltjr_font_callback(new_name, size, id, otfl_fdr)
366 luatexbase.call_callback('luatexja.define_font', res, new_name, size, id)
367 -- this callback processes variation selector, so we execute it always
370 luatexbase.create_callback('luatexja.define_font', 'simple', function (n) return n end)
371 luatexbase.add_to_callback('define_font',luatexja.font_callback,"luatexja.font_callback", 1)
374 ------------------------------------------------------------------------
376 ------------------------------------------------------------------------
378 -- these function are called from ltj-latex.sty
379 local kyenc_list, ktenc_list = {}, {}
380 function add_kyenc_list(enc) kyenc_list[enc] = 'true ' end
381 function add_ktenc_list(enc) ktenc_list[enc] = 'true ' end
382 function is_kyenc(enc)
383 tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (kyenc_list[enc] or 'false '))
385 function is_ktenc(enc)
386 tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (ktenc_list[enc] or 'false '))
388 function is_kenc(enc)
389 tex.sprint(cat_lp, '\\let\\ifin@\\if'
390 .. (kyenc_list[enc] or ktenc_list[enc] or 'false '))
393 local kfam_list, Nkfam_list = {}, {}
394 function add_kfam_list(enc, fam)
395 if not kfam_list[enc] then kfam_list[enc] = {} end
396 kfam_list[enc][fam] = 'true '
398 function add_Nkfam_list(enc, fam)
399 if not Nkfam_list[enc] then Nkfam_list[enc] = {} end
400 Nkfam_list[enc][fam] = 'true '
402 function is_kfam(enc, fam)
403 tex.sprint(cat_lp, '\\let\\ifin@\\if'
404 .. (kfam_list[enc] and kfam_list[enc][fam] or 'false ')) end
405 function is_Nkfam(enc, fam)
406 tex.sprint(cat_lp, '\\let\\ifin@\\if'
407 .. (Nkfam_list[enc] and Nkfam_list[enc][fam] or 'false ')) end
409 local ffam_list, Nffam_list = {}, {}
410 function add_ffam_list(enc, fam)
411 if not ffam_list[enc] then ffam_list[enc] = {} end
412 ffam_list[enc][fam] = 'true '
414 function add_Nffam_list(enc, fam)
415 if not Nffam_list[enc] then Nffam_list[enc] = {} end
416 Nffam_list[enc][fam] = 'true '
418 function is_ffam(enc, fam)
419 tex.sprint(cat_lp, '\\let\\ifin@\\if'
420 .. (ffam_list[enc] and ffam_list[enc][fam] or 'false ')) end
421 function is_Nffam(enc, fam)
422 tex.sprint(cat_lp, '\\let\\ifin@\\if'
423 .. (Nffam_list[enc] and Nffam_list[enc][fam] or 'false ')) end
425 ------------------------------------------------------------------------
427 ------------------------------------------------------------------------
429 local alt_font_table = alt_font_table
430 local attr_curaltfnt = {}
431 local ucs_out = 0x110000
433 ------ for TeX interface
435 function set_alt_font(b,e,ind,bfnt)
436 -- ind: 新フォント, bfnt: 基底フォント
437 if b>e then b, e = e, b end
439 ltjb.package_error('luatexja',
440 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
441 'I take the intersection with [0x80, 0x10ffff].')
442 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
443 elseif e<0 then -- b<e<0
445 elseif b<0x80 or e>=ucs_out then
446 ltjb.package_warning('luatexja',
447 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
448 'I take the intersection with [0x80, 0x10ffff].')
449 b, e = math.max(0x80,b), math.min(ucs_out-1,e)
451 if not alt_font_table[bfnt] then alt_font_table[bfnt]={} end
452 local t = alt_font_table[bfnt]
453 local ac = font_getfont(ind).characters
454 if bfnt==ind then ind = nil end -- ind == bfnt の場合はテーブルから削除
455 if e>=0 then -- character range
457 if ac[i]then t[i]=ind end
461 local tx = font_metric_table[bfnt].chars
462 for i,v in pairs(tx) do
463 if b<=v and v<=e and ac[i] then t[i]=ind end
469 function clear_alt_font(bfnt)
470 if alt_font_table[bfnt] then
471 local t = alt_font_table[bfnt]
472 for i,_ in pairs(t) do t[i]=nil; end
476 ------ used in ltjp.suppress_hyphenate_ja callback
477 function replace_altfont(pf, pc)
478 local a = alt_font_table[pf]
479 return a and a[pc] or pf
482 ------ for LaTeX interface
484 local alt_font_table_latex = {}
487 function clear_alt_font_latex(bbase)
488 local t = alt_font_table_latex[bbase]
490 for j,v in pairs(t) do t[j] = nil end
495 function set_alt_font_latex(b,e,ind,bbase)
496 -- ind: Alt font の enc/fam/ser/shape, bbase: 基底フォントの enc/fam/ser/shape
497 if b>e then b, e = e, b end
499 ltjb.package_error('luatexja',
500 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
501 'I take the intersection with [0x80, 0x10ffff].')
502 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
503 elseif e<0 then -- b<e<0
505 elseif b<0x80 or e>=ucs_out then
506 ltjb.package_warning('luatexja',
507 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
508 'I take the intersection with [0x80, 0x10ffff].')
509 b, e = math.max(0x80,b), math.min(ucs_out-1,e)
512 if not alt_font_table_latex[bbase] then alt_font_table_latex[bbase]={} end
513 local t = alt_font_table_latex[bbase]
514 if not t[ind] then t[ind] = {} end
516 for j,v in pairs(t) do
517 if v[i] then -- remove old entry
518 if j~=ind then v[i]=nil end; break
523 -- remove the empty tables
524 for j,v in pairs(t) do
525 local flag_clear = true
526 for k,_ in pairs(v) do flag_clear = false; break end
527 if flag_clear then t[j]=nil end
529 if ind==bbase then t[bbase] = nil end
532 -- ここから先は 新 \selectfont の内部でしか実行されない
534 local alt_font_base, alt_font_base_num
537 function does_alt_set(bbase)
538 aftl_base = alt_font_table_latex[bbase]
539 tex.sprint(cat_lp, '\\if' .. (aftl_base and 'true' or 'false'))
542 function print_aftl_address()
543 tex.sprint(cat_lp, ';ltjaltfont' .. tostring(aftl_base):sub(8))
547 function output_alt_font_cmd(dir, bbase)
548 alt_font_base = bbase
550 alt_font_base_num = tex.getattribute(attr_curtfnt)
552 alt_font_base_num = tex.getattribute(attr_curjfnt)
554 local t = alt_font_table[alt_font_base_num]
556 for i,_ in pairs(t) do t[i]=nil end
558 t = alt_font_table_latex[bbase]
560 for i,_ in pairs(t) do
561 tex.sprint(cat_lp, '\\ltj@pickup@altfont@aux' .. dir .. '{' .. i .. '}')
567 function pickup_alt_font_a(size_str)
568 local t = alt_font_table_latex[alt_font_base]
570 for i,v in pairs(t) do
571 tex.sprint(cat_lp, '\\expandafter\\ltj@pickup@altfont@copy'
572 .. '\\csname ' .. i .. '/' .. size_str .. '\\endcsname{' .. i .. '}')
577 local function pickup_alt_font_class(class, afnt_num, afnt_chars)
578 local t = alt_font_table[alt_font_base_num]
579 local tx = font_metric_table[alt_font_base_num].chars
580 for i,v in pairs(tx) do
581 if v==class and afnt_chars[i] then t[i]=afnt_num end
586 function pickup_alt_font_b(afnt_num, afnt_base)
587 local t = alt_font_table[alt_font_base_num]
588 local ac = font_getfont(afnt_num).characters
589 if not t then t = {}; alt_font_table[alt_font_base_num] = t end
590 for i,v in pairs(alt_font_table_latex[alt_font_base]) do
591 if i == afnt_base then
592 for j,_ in pairs(v) do
594 if ac[j] then t[j]=afnt_num end
595 else -- -n (n>=1) means that the character class n,
596 -- which is defined in the JFM
597 pickup_alt_font_class(-j, afnt_num, ac)
607 ------------------------------------------------------------------------
609 ------------------------------------------------------------------------
611 local font_extra_info = font_extra_info -- key: fontnumber
612 local font_extra_basename = {} -- key: basename
614 -- IVS and vertical metrics
615 local prepare_fl_data
616 local supply_vkern_table
618 local fields = fontloader.fields
619 local function glyph_vmetric(glyph)
620 local flds = fields(glyph)
621 local vw, tsb, vk = nil, nil, nil
622 for _,i in ipairs(flds) do
623 if i=='vwidth' then vw = glyph.vwidth end
624 if i=='tsidebearing' then tsb = glyph.tsidebearing end
625 if i=='vkerns' then vk = glyph.vkerns end
630 local sort = table.sort
631 local function add_fl_table(dest, tg, unitable, glyphmax, asc_des, units)
632 for i = 0, glyphmax-1 do
636 for _,at in pairs(gv.altuni) do
637 local bu, vsel = at.unicode, at.variant
639 if vsel>=0xE0100 then vsel = vsel - 0xE0100 end
640 dest = dest or {}; dest[bu] = dest[bu] or {}
641 local uniq_flag = true
642 for i,_ in pairs(dest[bu]) do
643 if i==vs then uniq_flag = false; break end
646 dest[bu][vsel] = unitable[gv.name]
652 local vw, tsb, vk = glyph_vmetric(gv)
653 local gi = unitable[gv.name]
654 if vw and vw~=asc_des then
655 -- We do not use tsidebearing, since (1) fontloader does not read VORG table
656 -- and (2) 'tsidebearing' doea not appear in the returned table by fontloader.fields.
657 -- Hence, we assume that vertical origin == ascender
658 -- (see capsule_glyph_tate in ltj-setwidth.lua)
659 dest = dest or {}; dest[gi] = dest[gi] or {}
660 dest[gi].vwidth = vw/units
665 local dest_vk = dest.vkerns or {}; dest.vkerns = dest_vk
666 for _,v in pairs(vk) do
668 if type(vl)=='table' then
669 for _,vlt in pairs(vl) do
670 dest_vk[vlt] = dest_vk[vlt] or {}
671 dest_vk[vlt][gi] = dest_vk[vlt][gi] or {}
672 dest_vk[vlt][gi][unitable[v.char]] = v.off
675 dest_vk[vl] = dest_vk[vl] or {}
676 dest_vk[vl][gi] = dest_vk[vl][gi] or {}
677 dest_vk[vl][gi][unitable[v.char]] = v.off
685 prepare_fl_data = function (dest, id)
686 local fl = fontloader.open(id.filename)
687 local unicodes = id.resources.unicodes
689 dest = add_fl_table(dest, fl.glyphs, id.resources.unicodes, fl.glyphmax,
690 fl.ascent + fl.descent, fl.units_per_em)
693 for _,v in pairs(fl.subfonts) do
694 dest = add_fl_table(dest, v.glyphs, id.resources.unicodes, v.glyphmax,
695 fl.ascent + fl.descent, fl.units_per_em)
701 -- supply vkern table
702 supply_vkern_table = function(id, bname)
703 local bx = font_extra_basename[bname].vkerns
704 local lookuphash = id.resources.lookuphash
705 local desc = id.shared.rawdata.descriptions
707 for i,v in pairs(bx) do
708 lookuphash[i] = lookuphash[i] or v
709 for j,w in pairs(v) do
710 desc[j].kerns = desc[j].kerns or {}
719 local prepare_vert_data
721 -- local function add_feature_table(tname, src, dest)
722 -- for i,v in pairs(src) do
723 -- if type(v.slookups)=='table' then
724 -- local s = v.slookups[tname]
727 -- dest[i] = dest[i] or {}
728 -- dest[i].vert = dest[i].vert or s
734 -- prepare_vert_data = function (dest, id)
735 -- local a = id.resources.sequences
737 -- local s = id.shared.rawdata.descriptions
738 -- for i,v in pairs(a) do
739 -- if v.features.vert or v.features.vrt2 then
740 -- dest= add_feature_table(v.subtables[1], s, dest)
747 -- function get_vert_glyph(n, chr)
748 -- local fn = font_extra_info[n]
749 -- return (fn and fn[chr] and fn[chr].vert) or chr
756 local checksum = file.checksum
758 local function prepare_extra_data_base(id)
759 if not id then return end
760 local bname = file.nameonly(id.filename or '')
761 if not font_extra_basename[bname] then
762 -- if the cache is present, read it
763 local newsum = checksum(id.filename) -- MD5 checksum of the fontfile
764 local v = "extra_" .. string.lower(file.nameonly(id.filename))
765 local dat = ltjb.load_cache(
767 function (t) return (t.version~=cache_ver) or (t.chksum~=newsum) end
769 -- if the cache is not found or outdated, save the cache
771 font_extra_basename[bname] = dat[1] or {}
774 dat = prepare_fl_data(dat, id)
775 font_extra_basename[bname] = dat or {}
778 chksum = checksum(id.filename),
786 local function prepare_extra_data_font(id, res)
787 if type(res)=='table' and res.shared then
788 font_extra_info[id] = font_extra_basename[file.nameonly(res.filename)]
791 luatexbase.add_to_callback(
792 'luaotfload.patch_font',
794 -- these function is executed one time per one fontfile
795 local bname = prepare_extra_data_base(tfmdata)
796 if bname then supply_vkern_table(tfmdata, bname) end
799 'ltj.prepare_extra_data', 1)
800 luatexbase.add_to_callback(
801 'luatexja.define_font',
802 function (res, name, size, id)
803 prepare_extra_data_font(id, res)
805 'ltj.prepare_extra_data', 1)
807 local nulltable = {} -- dummy
808 ltjr.vert_addfunc = function (n) font_extra_info[n] = nulltable end
810 local identifiers = fonts.hashes.identifiers
811 for i=1,font.nextid()-1 do
812 if identifiers[i] then
813 prepare_extra_data_base(identifiers[i])
814 prepare_extra_data_font(i,identifiers[i])
820 ------------------------------------------------------------------------
821 -- calculate vadvance
822 ------------------------------------------------------------------------
824 local function acc_feature(table_vadv, table_vorg, subtables, ft, already_vert)
825 for char_num,v in pairs(ft.shared.rawdata.descriptions) do
827 for sn, sv in pairs(v.slookups) do
828 if subtables[sn] and type(sv)=='table' then
831 = (table_vadv[char_num] or 0) + sv[4]
833 if sv[2]~=0 and not already_vert then
835 = (table_vorg[char_num] or 0) + sv[2]
843 luatexbase.add_to_callback(
844 "luatexja.define_jfont",
845 function (fmtable, fnum)
846 local vadv = {}; fmtable.v_advance = vadv
847 local vorg = {}; fmtable.v_origin = vorg
848 local ft = font_getfont(fnum)
850 if ft.specification then
851 for feat_name,v in pairs(ft.specification.features.normal) do
853 for _,i in pairs(ft.resources.sequences) do
854 if i.order[1]== feat_name and i.type == 'gpos_single' then
855 for _,st in pairs(i.subtables) do
862 acc_feature(vadv, vorg, subtables, ft,
863 ft.specification.features.normal.vrt2 or ft.specification.features.normal.vert)
864 for i,v in pairs(vadv) do
865 vadv[i]=vadv[i]/ft.units_per_em*fmtable.size
867 for i,v in pairs(vorg) do
868 vorg[i]=vorg[i]/ft.units_per_em*fmtable.size
872 end, 1, 'ltj.v_advance'
875 ------------------------------------------------------------------------
877 ------------------------------------------------------------------------
879 local get_dir_count = ltjd.get_dir_count
880 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
881 local tex_set_attr = tex.setattribute
883 -- EXT: italic correction
884 function append_italic()
885 local p = to_direct(tex.nest[tex.nest.ptr].tail)
886 if p and getid(p)==id_glyph then
888 local g = node_new(id_kern)
889 setfield(g, 'subtype', 1)
890 set_attr(g, attr_icflag, ITALIC)
891 if is_ucs_in_japanese_char(p) then
892 f = has_attr(p, (get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)
893 local j = font_metric_table[f]
894 setfield(g, 'kern', j.char_type[find_char_class(getchar(p), j)].italic)
896 local h = font_getfont(f) or font.fonts[f]
898 setfield(g, 'kern', h.characters[getchar(p)].italic)
900 tex_set_attr(attr_icflag, 0)
905 tex_set_attr(attr_icflag, 0)