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
22 local nullfunc = function(n) return n end
23 local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
25 local node_new = Dnode.new
26 local node_free = Dnode.free
27 local has_attr = Dnode.has_attribute
28 local set_attr = Dnode.set_attribute
29 local round = tex.round
30 local font_getfont = font.getfont
32 local attr_icflag = luatexbase.attributes['ltj@icflag']
33 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
34 local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
35 local id_glyph = node.id('glyph')
36 local id_kern = node.id('kern')
37 local id_glue_spec = node.id('glue_spec')
38 local id_glue = node.id('glue')
39 local cat_lp = luatexbase.catcodetables['latex-package']
40 local FROM_JFM = luatexja.icflag_table.FROM_JFM
41 local tokenlib = luatexja.token
42 ------------------------------------------------------------------------
44 ------------------------------------------------------------------------
46 metrics={} -- this table stores all metric informations
47 font_metric_table={} -- [font number] -> jfm_name, jfm_var, size
49 luatexbase.create_callback("luatexja.load_jfm", "data", function (ft, jn) return ft end)
51 local jfm_file_name, jfm_var
53 local jfm_dir, is_def_jfont
55 function define_jfm(t)
56 local real_char -- Does current character class have the 'real' character?
57 if t.dir~=jfm_dir then
58 defjfm_res= nil; return
59 elseif type(t.zw)~='number' or type(t.zh)~='number' then
60 defjfm_res= nil; return
62 t.char_type = {}; t.chars = {}
63 for i,v in pairs(t) do
64 if type(i) == 'number' then -- char_type
66 if i ~= 0 then defjfm_res= nil; return end
70 for j,w in pairs(v.chars) do
71 if type(w) == 'number' and w~=-1 then
73 elseif type(w) == 'string' and utf.len(w)==1 then
74 real_char = true; w = utf.byte(w)
75 elseif type(w) == 'string' and utf.len(w)==2 and utf.sub(w,2) == '*' then
76 real_char = true; w = utf.byte(utf.sub(w,1,1))
78 if not t.chars[w] then
81 defjfm_res= nil; return
84 if type(v.align)~='string' then
85 v.align = 'left' -- left
88 if type(v.width)~='number' and v.width~='prop' then
89 defjfm_res= nil; return
91 if v.width=='prop' and jfm_dir=='tate' then
94 if type(v.height)~='number' then
97 if type(v.depth)~='number' then
100 if type(v.italic)~='number' then
103 if type(v.left)~='number' then
106 if type(v.down)~='number' then
113 v.kern = v.kern or {}; v.glue = v.glue or {}
114 for j in pairs(v.glue) do
115 if v.kern[j] then defjfm_res= nil; return end
117 for j,x in pairs(v.kern) do
118 if type(x)=='number' then
120 elseif type(x)=='table' then
121 v.kern[j] = {x[1], x[2] or 0}
128 t = luatexbase.call_callback("luatexja.load_jfm", t, jfm_file_name)
133 local update_jfm_cache
135 local function mult_table(old,scale) -- modified from table.fastcopy
138 for k,v in next, old do
139 if type(v) == "table" then
140 new[k] = mult_table(v,scale)
141 elseif type(v) == "number" then
142 new[k] = round(v*scale)
151 update_jfm_cache = function (j,sz)
152 if metrics[j].size_cache[sz] then return end
153 --local TEMP = node_new(id_kern)
155 metrics[j].size_cache[sz] = t
156 t.chars = metrics[j].chars
157 t.char_type = mult_table(metrics[j].char_type, sz)
158 for i,v in pairs(t.char_type) do
159 v.align = (v.align=='left') and 0 or
160 ((v.align=='right') and 1 or 0.5)
161 if type(i) == 'number' then -- char_type
162 for k,w in pairs(v.glue) do
163 local h = node_new(id_glue_spec)
164 v[k] = {true, h, (w[5] and w[5]/sz or 0), FROM_JFM + (w[4] and w[4]/sz or 0)}
165 setfield(h, 'width', w[1])
166 setfield(h, 'stretch', w[2])
167 setfield(h, 'shrink', w[3])
168 setfield(h, 'stretch_order', 0)
169 setfield(h, 'shrink_order', 0)
171 for k,w in pairs(v.kern) do
172 local g = node_new(id_kern)
173 setfield(g, 'kern', w[1])
174 setfield(g, 'subtype', 1)
175 set_attr(g, attr_icflag, FROM_JFM)
176 v[k] = {false, g, w[2]/sz}
179 v.glue, v.kern = nil, nil
181 t.kanjiskip = mult_table(metrics[j].kanjiskip, sz)
182 t.xkanjiskip = mult_table(metrics[j].xkanjiskip,sz)
183 t.zw = round(metrics[j].zw*sz)
184 t.zh = round(metrics[j].zh*sz)
190 luatexbase.create_callback("luatexja.find_char_class", "data",
191 function (arg, fmtable, char)
195 local start_time_measure = ltjb.start_time_measure
196 local stop_time_measure = ltjb.stop_time_measure
197 local fcc_temp = { chars_cbcache = {} }
199 fcc_temp.chars_cbcache,
201 __index = function () return 0 end,
203 function find_char_class(c,m)
204 -- c: character code, m:
205 local r = (m or fcc_temp).chars_cbcache[c]
208 luatexbase.call_callback("luatexja.find_char_class", 0, m, c)
209 m.chars_cbcache[c or 0] = r
216 ------------------------------------------------------------------------
217 -- LOADING JAPANESE FONTS
218 ------------------------------------------------------------------------
222 local global_flag -- true if \globaljfont, false if \jfont
223 local function load_jfont_metric()
224 if jfm_file_name=='' then
225 ltjb.package_error('luatexja',
227 'To load and define a Japanese font, a JFM must be specified.'..
228 "The JFM 'ujis' will be used for now.")
231 for j,v in ipairs(metrics) do
232 if v.name==jfm_file_name then return j end
234 luatexja.load_lua('jfm-' .. jfm_file_name .. '.lua')
236 defjfm_res.name = jfm_file_name
237 table.insert(metrics, defjfm_res)
245 local utf8 = unicode.utf8
246 function jfontdefX(g, dir, csname)
247 jfm_dir, is_def_jfont = dir, true
248 cstemp = csname:sub( (utf8.byte(csname,1,1) == tex.escapechar) and 2 or 1, -1)
249 cstemp = cstemp:sub(1, ((cstemp:sub(-1,-1)==' ') and (cstemp:len()>=2)) and -2 or -1)
250 global_flag = g and '\\global' or ''
251 tex.sprint(cat_lp, '\\expandafter\\font\\csname ',
252 (cstemp==' ') and '\\space' or 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 ',
269 (cstemp==' ') and '\\space' or cstemp,
270 '\\endcsname=\\relax')
273 update_jfm_cache(j, f.size)
274 local ad = identifiers[fn].parameters
275 local sz = metrics[j].size_cache[f.size]
276 local fmtable = { jfm = j, size = f.size, var = jfm_var,
277 zw = sz.zw, zh = sz.zh,
278 ascent = ad.ascender,
279 descent = ad.descender,
280 chars = sz.chars, char_type = sz.char_type,
281 kanjiskip = sz.kanjiskip, xkanjiskip = sz.xkanjiskip,
285 fmtable = luatexbase.call_callback("luatexja.define_jfont", fmtable, fn)
286 font_metric_table[fn]=fmtable
287 tex.sprint(cat_lp, global_flag, '\\protected\\expandafter\\def\\csname ',
288 (cstemp==' ') and '\\space' or cstemp, '\\endcsname{\\ltj@cur'..
289 (jfm_dir == 'yoko' and 'j' or 't') .. 'fnt', fn, '\\relax}')
294 local get_dir_count = ltjd.get_dir_count
295 local dir_tate = luatexja.dir_table.dir_tate
296 local tex_get_attr = tex.getattribute
299 local a = font_metric_table[
300 tex_get_attr((get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)]
301 return a and a.zw or 0
304 local a = font_metric_table[
305 tex_get_attr((get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)]
306 return a and a.zw or 0
311 -- extract jfm_file_name and jfm_var
312 -- normalize position of 'jfm=' and 'jfmvar=' keys
313 local function extract_metric(name)
314 jfm_file_name = ''; jfm_var = ''
315 local tmp, index = name:sub(1, 5), 1
316 if tmp == 'file:' or tmp == 'name:' or tmp == 'psft:' then
319 local p = name:find(":", index); index = p and (p+1) or index
321 local l = name:len()+1
322 local q = name:find(";", index+1) or l
323 if name:sub(index, index+3)=='jfm=' and q>index+4 then
324 jfm_file_name = name:sub(index+4, q-1)
326 name = name:sub(1,index-1) .. name:sub(q+1)
328 name = name:sub(1,index-1)
331 elseif name:sub(index, index+6)=='jfmvar=' and q>index+6 then
332 jfm_var = name:sub(index+7, q-1)
334 name = name:sub(1,index-1) .. name:sub(q+1)
336 name = name:sub(1,index-1)
340 index = (l~=q) and (q+1) or nil
343 if jfm_file_name~='' then
344 local l = name:sub(-1)
346 .. ((l==':' or l==';') and '' or ';')
347 .. 'jfm=' .. jfm_file_name
349 name = name .. 'jfmvar=' .. jfm_var
352 if jfm_dir == 'tate' then
353 if not name:match('vert') and not name:match('vrt2') then
354 name = name .. ';vert;vrt2'
360 -- define_font callback
361 local otfl_fdr = fonts.definers.read
362 local ltjr_font_callback = ltjr.font_callback
363 function luatexja.font_callback(name, size, id)
364 local new_name = is_def_jfont and extract_metric(name) or name
366 local res = ltjr_font_callback(new_name, size, id, otfl_fdr)
367 luatexbase.call_callback('luatexja.define_font', res, new_name, size, id)
368 -- this callback processes variation selector, so we execute it always
371 luatexbase.create_callback('luatexja.define_font', 'simple', function (n) return n end)
372 luatexbase.add_to_callback('define_font',luatexja.font_callback,"luatexja.font_callback", 1)
375 ------------------------------------------------------------------------
377 ------------------------------------------------------------------------
379 -- these function are called from ltj-latex.sty
380 local kyenc_list, ktenc_list = {}, {}
381 function add_kyenc_list(enc) kyenc_list[enc] = 'true ' end
382 function add_ktenc_list(enc) ktenc_list[enc] = 'true ' end
383 function is_kyenc(enc)
384 tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (kyenc_list[enc] or 'false '))
386 function is_ktenc(enc)
387 tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (ktenc_list[enc] or 'false '))
389 function is_kenc(enc)
390 tex.sprint(cat_lp, '\\let\\ifin@\\if'
391 .. (kyenc_list[enc] or ktenc_list[enc] or 'false '))
394 local kfam_list, Nkfam_list = {}, {}
395 function add_kfam_list(enc, fam)
396 if not kfam_list[enc] then kfam_list[enc] = {} end
397 kfam_list[enc][fam] = 'true '
399 function add_Nkfam_list(enc, fam)
400 if not Nkfam_list[enc] then Nkfam_list[enc] = {} end
401 Nkfam_list[enc][fam] = 'true '
403 function is_kfam(enc, fam)
404 tex.sprint(cat_lp, '\\let\\ifin@\\if'
405 .. (kfam_list[enc] and kfam_list[enc][fam] or 'false ')) end
406 function is_Nkfam(enc, fam)
407 tex.sprint(cat_lp, '\\let\\ifin@\\if'
408 .. (Nkfam_list[enc] and Nkfam_list[enc][fam] or 'false ')) end
410 local ffam_list, Nffam_list = {}, {}
411 function add_ffam_list(enc, fam)
412 if not ffam_list[enc] then ffam_list[enc] = {} end
413 ffam_list[enc][fam] = 'true '
415 function add_Nffam_list(enc, fam)
416 if not Nffam_list[enc] then Nffam_list[enc] = {} end
417 Nffam_list[enc][fam] = 'true '
419 function is_ffam(enc, fam)
420 tex.sprint(cat_lp, '\\let\\ifin@\\if'
421 .. (ffam_list[enc] and ffam_list[enc][fam] or 'false ')) end
422 function is_Nffam(enc, fam)
423 tex.sprint(cat_lp, '\\let\\ifin@\\if'
424 .. (Nffam_list[enc] and Nffam_list[enc][fam] or 'false ')) end
426 ------------------------------------------------------------------------
428 ------------------------------------------------------------------------
430 local alt_font_table = alt_font_table
431 local attr_curaltfnt = {}
432 local ucs_out = 0x110000
434 ------ for TeX interface
436 function set_alt_font(b,e,ind,bfnt)
437 -- ind: 新フォント, bfnt: 基底フォント
438 if b>e then b, e = e, b end
440 ltjb.package_error('luatexja',
441 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
442 'I take the intersection with [0x80, 0x10ffff].')
443 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
444 elseif e<0 then -- b<e<0
446 elseif b<0x80 or e>=ucs_out then
447 ltjb.package_warning('luatexja',
448 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
449 'I take the intersection with [0x80, 0x10ffff].')
450 b, e = math.max(0x80,b), math.min(ucs_out-1,e)
452 if not alt_font_table[bfnt] then alt_font_table[bfnt]={} end
453 local t = alt_font_table[bfnt]
454 local ac = font_getfont(ind).characters
455 if bfnt==ind then ind = nil end -- ind == bfnt の場合はテーブルから削除
456 if e>=0 then -- character range
458 if ac[i]then t[i]=ind end
462 local tx = font_metric_table[bfnt].chars
463 for i,v in pairs(tx) do
464 if b<=v and v<=e and ac[i] then t[i]=ind end
470 function clear_alt_font(bfnt)
471 if alt_font_table[bfnt] then
472 local t = alt_font_table[bfnt]
473 for i,_ in pairs(t) do t[i]=nil; end
477 ------ used in ltjp.suppress_hyphenate_ja callback
478 function replace_altfont(pf, pc)
479 local a = alt_font_table[pf]
480 return a and a[pc] or pf
483 ------ for LaTeX interface
485 local alt_font_table_latex = {}
488 function clear_alt_font_latex(bbase)
489 local t = alt_font_table_latex[bbase]
491 for j,v in pairs(t) do t[j] = nil end
496 function set_alt_font_latex(b,e,ind,bbase)
497 -- ind: Alt font の enc/fam/ser/shape, bbase: 基底フォントの enc/fam/ser/shape
498 if b>e then b, e = e, b end
500 ltjb.package_error('luatexja',
501 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
502 'I take the intersection with [0x80, 0x10ffff].')
503 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
504 elseif e<0 then -- b<e<0
506 elseif b<0x80 or e>=ucs_out then
507 ltjb.package_warning('luatexja',
508 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
509 'I take the intersection with [0x80, 0x10ffff].')
510 b, e = math.max(0x80,b), math.min(ucs_out-1,e)
513 if not alt_font_table_latex[bbase] then alt_font_table_latex[bbase]={} end
514 local t = alt_font_table_latex[bbase]
515 if not t[ind] then t[ind] = {} end
517 for j,v in pairs(t) do
518 if v[i] then -- remove old entry
519 if j~=ind then v[i]=nil end; break
524 -- remove the empty tables
525 for j,v in pairs(t) do
526 local flag_clear = true
527 for k,_ in pairs(v) do flag_clear = false; break end
528 if flag_clear then t[j]=nil end
530 if ind==bbase then t[bbase] = nil end
533 -- ここから先は 新 \selectfont の内部でしか実行されない
535 local alt_font_base, alt_font_base_num
538 function does_alt_set(bbase)
539 aftl_base = alt_font_table_latex[bbase]
540 tex.sprint(cat_lp, '\\if' .. (aftl_base and 'true' or 'false'))
543 function print_aftl_address()
544 tex.sprint(cat_lp, ';ltjaltfont' .. tostring(aftl_base):sub(8))
548 function output_alt_font_cmd(dir, bbase)
549 alt_font_base = bbase
551 alt_font_base_num = tex.getattribute(attr_curtfnt)
553 alt_font_base_num = tex.getattribute(attr_curjfnt)
555 local t = alt_font_table[alt_font_base_num]
557 for i,_ in pairs(t) do t[i]=nil end
559 t = alt_font_table_latex[bbase]
561 for i,_ in pairs(t) do
562 tex.sprint(cat_lp, '\\ltj@pickup@altfont@aux' .. dir .. '{' .. i .. '}')
568 function pickup_alt_font_a(size_str)
569 local t = alt_font_table_latex[alt_font_base]
571 for i,v in pairs(t) do
572 tex.sprint(cat_lp, '\\expandafter\\ltj@pickup@altfont@copy'
573 .. '\\csname ' .. i .. '/' .. size_str .. '\\endcsname{' .. i .. '}')
578 local function pickup_alt_font_class(class, afnt_num, afnt_chars)
579 local t = alt_font_table[alt_font_base_num]
580 local tx = font_metric_table[alt_font_base_num].chars
581 for i,v in pairs(tx) do
582 if v==class and afnt_chars[i] then t[i]=afnt_num end
587 function pickup_alt_font_b(afnt_num, afnt_base)
588 local t = alt_font_table[alt_font_base_num]
589 local ac = font_getfont(afnt_num).characters
590 if not t then t = {}; alt_font_table[alt_font_base_num] = t end
591 for i,v in pairs(alt_font_table_latex[alt_font_base]) do
592 if i == afnt_base then
593 for j,_ in pairs(v) do
595 if ac[j] then t[j]=afnt_num end
596 else -- -n (n>=1) means that the character class n,
597 -- which is defined in the JFM
598 pickup_alt_font_class(-j, afnt_num, ac)
607 ------------------------------------------------------------------------
609 ------------------------------------------------------------------------
611 function cleanup_size_cache()
612 --local gs, ke = 0, 0
613 for _,n in pairs(metrics) do
614 for i,t in pairs(n.size_cache) do
615 for _,v in pairs(t.char_type) do
616 for k,w in pairs(v) do
617 if type(k)=='number' then
618 --if w[1] then gs = gs + 1 else ke = ke + 1 end
626 --print('glue spec: ', gs, 'kern: ', ke)
630 ------------------------------------------------------------------------
632 ------------------------------------------------------------------------
634 local font_extra_info = font_extra_info -- key: fontnumber
635 local font_extra_basename = {} -- key: basename
637 -- IVS and vertical metrics
638 local prepare_fl_data
639 local supply_vkern_table
641 local fields = fontloader.fields
642 local function glyph_vmetric(glyph)
643 local flds = fields(glyph)
644 local vw, tsb, vk = nil, nil, nil
645 for _,i in ipairs(flds) do
646 if i=='vwidth' then vw = glyph.vwidth end
647 if i=='tsidebearing' then tsb = glyph.tsidebearing end
648 if i=='vkerns' then vk = glyph.vkerns end
653 local sort = table.sort
654 local function add_fl_table(dest, tg, unitable, glyphmax, asc_des, units)
655 for i = 0, glyphmax-1 do
659 for _,at in pairs(gv.altuni) do
660 local bu, vsel = at.unicode, at.variant
662 if vsel>=0xE0100 then vsel = vsel - 0xE0100 end
663 dest = dest or {}; dest[bu] = dest[bu] or {}
664 local uniq_flag = true
665 for i,_ in pairs(dest[bu]) do
666 if i==vs then uniq_flag = false; break end
669 dest[bu][vsel] = unitable[gv.name]
675 local vw, tsb, vk = glyph_vmetric(gv)
676 local gi = unitable[gv.name]
677 if gi and vw and vw~=asc_des then
678 -- We do not use tsidebearing, since (1) fontloader does not read VORG table
679 -- and (2) 'tsidebearing' doea not appear in the returned table by fontloader.fields.
680 -- Hence, we assume that vertical origin == ascender
681 -- (see capsule_glyph_tate in ltj-setwidth.lua)
682 dest = dest or {}; dest[gi] = dest[gi] or {}
683 dest[gi].vwidth = vw/units
688 local dest_vk = dest.vkerns or {}; dest.vkerns = dest_vk
689 for _,v in pairs(vk) do
690 if unitable[v.char] then
692 if type(vl)=='table' then
693 for _,vlt in pairs(vl) do
694 dest_vk[vlt] = dest_vk[vlt] or {}
695 dest_vk[vlt][gi] = dest_vk[vlt][gi] or {}
696 dest_vk[vlt][gi][unitable[v.char]] = v.off
699 dest_vk[vl] = dest_vk[vl] or {}
700 dest_vk[vl][gi] = dest_vk[vl][gi] or {}
701 dest_vk[vl][gi][unitable[v.char]] = v.off
710 prepare_fl_data = function (dest, id)
711 local fl = fontloader.open(id.filename)
712 local unicodes = id.resources.unicodes
714 dest = add_fl_table(dest, fl.glyphs, id.resources.unicodes, fl.glyphmax,
715 fl.ascent + fl.descent, fl.units_per_em)
718 for _,v in pairs(fl.subfonts) do
719 dest = add_fl_table(dest, v.glyphs, id.resources.unicodes, v.glyphmax,
720 fl.ascent + fl.descent, fl.units_per_em)
723 fontloader.close(fl); collectgarbage("collect")
726 -- supply vkern table
727 supply_vkern_table = function(id, bname)
728 local bx = font_extra_basename[bname].vkerns
729 local lookuphash = id.resources.lookuphash
730 local desc = id.shared.rawdata.descriptions
732 for i,v in pairs(bx) do
733 lookuphash[i] = lookuphash[i] or v
734 for j,w in pairs(v) do
735 desc[j].kerns = desc[j].kerns or {}
746 local checksum = file.checksum
748 local function prepare_extra_data_base(id)
749 if not id then return end
750 local bname = file.nameonly(id.filename or '')
751 if not font_extra_basename[bname] then
752 -- if the cache is present, read it
753 local newsum = checksum(id.filename) -- MD5 checksum of the fontfile
754 local v = "extra_" .. string.lower(file.nameonly(id.filename))
755 local dat = ltjb.load_cache(
757 function (t) return (t.version~=cache_ver) or (t.chksum~=newsum) end
759 -- if the cache is not found or outdated, save the cache
761 font_extra_basename[bname] = dat[1] or {}
764 dat = prepare_fl_data(dat, id)
765 font_extra_basename[bname] = dat or {}
768 chksum = checksum(id.filename),
776 local function prepare_extra_data_font(id, res)
777 if type(res)=='table' and res.shared then
778 font_extra_info[id] = font_extra_basename[file.nameonly(res.filename)]
781 luatexbase.add_to_callback(
782 'luaotfload.patch_font',
784 -- these function is executed one time per one fontfile
785 local bname = prepare_extra_data_base(tfmdata)
786 if bname then supply_vkern_table(tfmdata, bname) end
789 'ltj.prepare_extra_data', 1)
790 luatexbase.add_to_callback(
791 'luatexja.define_font',
792 function (res, name, size, id)
793 prepare_extra_data_font(id, res)
795 'ltj.prepare_extra_data', 1)
797 local nulltable = {} -- dummy
798 ltjr.vert_addfunc = function (n) font_extra_info[n] = nulltable end
800 local identifiers = fonts.hashes.identifiers
801 for i=1,font.nextid()-1 do
802 if identifiers[i] then
803 prepare_extra_data_base(identifiers[i])
804 prepare_extra_data_font(i,identifiers[i])
810 ------------------------------------------------------------------------
811 -- calculate vadvance
812 ------------------------------------------------------------------------
814 local function acc_feature(table_vadv, table_vorg, subtables, ft, already_vert)
815 for char_num,v in pairs(ft.shared.rawdata.descriptions) do
817 for sn, sv in pairs(v.slookups) do
818 if subtables[sn] and type(sv)=='table' then
821 = (table_vadv[char_num] or 0) + sv[4]
823 if sv[2]~=0 and not already_vert then
825 = (table_vorg[char_num] or 0) + sv[2]
833 luatexbase.add_to_callback(
834 "luatexja.define_jfont",
835 function (fmtable, fnum)
836 local vadv = {}; fmtable.v_advance = vadv
837 local vorg = {}; fmtable.v_origin = vorg
838 local ft = font_getfont(fnum)
840 if ft.specification then
841 for feat_name,v in pairs(ft.specification.features.normal) do
843 for _,i in pairs(ft.resources.sequences) do
844 if i.order[1]== feat_name and i.type == 'gpos_single' then
845 for _,st in pairs(i.subtables) do
852 acc_feature(vadv, vorg, subtables, ft,
853 ft.specification.features.normal.vrt2 or ft.specification.features.normal.vert)
854 for i,v in pairs(vadv) do
855 vadv[i]=vadv[i]/ft.units_per_em*fmtable.size
857 for i,v in pairs(vorg) do
858 vorg[i]=vorg[i]/ft.units_per_em*fmtable.size
862 end, 1, 'ltj.v_advance'
865 ------------------------------------------------------------------------
867 ------------------------------------------------------------------------
869 local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
870 local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
871 local get_dir_count = ltjd.get_dir_count
872 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
873 local ensure_tex_attr = ltjb.ensure_tex_attr
874 local node_write = Dnode.write
876 local ITALIC = luatexja.icflag_table.ITALIC
877 -- EXT: italic correction
878 function append_italic()
879 local p = to_direct(tex.nest[tex.nest.ptr].tail)
880 local TEMP = node_new(id_kern)
881 if p and getid(p)==id_glyph then
882 if is_ucs_in_japanese_char(p) then
883 local j = font_metric_table[
884 has_attr(p, (get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)
886 local g = node_new(id_kern)
887 setfield(g, 'subtype', 1); set_attr(g, attr_icflag, ITALIC)
888 setfield(g, 'kern', j.char_type[find_char_class(getchar(p), j)].italic)
889 node_write(g); ensure_tex_attr(attr_icflag, 0)
892 local h = font_getfont(f) or font.fonts[f]
894 local g = node_new(id_kern)
895 setfield(g, 'subtype', 1); set_attr(g, attr_icflag, ITALIC)
896 setfield(g, 'kern', h.characters[getchar(p)].italic)
897 node_write(g); ensure_tex_attr(attr_icflag, 0)