-- -- 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 local getchar = node.direct.getchar local getnucleus = node.direct.getnucleus local getsup = node.direct.getsup local getsub = node.direct.getsub local getshift = node.direct.getshift local setnext = node.direct.setnext local setnucleus = node.direct.setnucleus local setsup = node.direct.setsup local setsub = node.direct.setsub local setlist = node.direct.setlist local setshift = node.direct.setshift 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.flush_node or node.direct.free local get_attr = node.direct.get_attribute local set_attr = node.direct.set_attribute local getcount = tex.getcount local cnt_stack = luatexbase.registernumber 'ltj@@stack' 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 -- vcenter noad は軸に揃えるため,欧文ベースライン補正がかかる local function conv_vcenter(sb) local h = getlist(sb) ; 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 get_attr(d, attr_dir)>=dir_node_auto then node_free(hd); setlist(h, nil); node_free(h) setlist(sb, d); set_attr(d, attr_icflag, 0) end end return sb end local cjhh_A local max, min = math.max, math.min -- sty : -1 (display), 0 (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(getnucleus(p)) else setnucleus(p, cjh_A(getnucleus(p), sty)) end setsub(p, cjh_A(getsub(p), max(sty+1,1))) setsup(p, cjh_A(getsup(p), max(sty+1,1))) elseif pid == id_choice then setfield(p, 'display', cjh_A(getfield(p, 'display'), -1)) setfield(p, 'text', cjh_A(getfield(p, 'text'), 0)) setfield(p, 'script', cjh_A(getfield(p, 'script'), 1)) setfield(p, 'scriptscript', cjh_A(getfield(p, 'scriptscript'), 2)) elseif pid == id_frac then setfield(p, 'num', cjh_A(getfield(p, 'num'), sty+1)) setfield(p, 'denom', cjh_A(getfield(p, 'denom'), sty+1)) elseif pid == id_radical then setnucleus(p, cjh_A(getnucleus(p), sty)) setsub(p, cjh_A(getsub(p), max(sty+1,1))) setsup(p, cjh_A(getsup(p), max(sty+1,1))) if getfield(p, 'degree') then setfield(p, 'degree', cjh_A(getfield(p, 'degree'), 2)) end elseif pid == id_style then local ps = getfield(p, 'style') if ps == "display'" or ps == 'display' then sty = -1 elseif 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 local setfont = node.direct.setfont local setchar = node.direct.setchar cjh_A = function (p, sty) if not p then return nil else local pid = getid(p) if pid == id_sub_mlist then if getlist(p) then setlist(p, conv_jchar_to_hbox(getlist(p), sty)) end elseif pid == id_mchar then local pc, fam = getchar (p), get_attr(p, attr_jfam) or -1 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 * min(max(sty,0),2) + fam, -1, getcount(cnt_stack)) if f ~= -1 then local q = node_new(id_sub_box) local r = node_new(id_glyph, 256); setnext(r, nil); setfont(r, f, pc) local met = ltjf_font_metric_table[f] r = capsule_glyph_math( r, met, met.char_type[ltjf_find_char_class(pc, met)], sty) setlist(q, r); node_free(p); p=q; end end elseif pid == id_sub_box and getlist(p) 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 = getlist(p); h = ltjd_make_dir_whatsit(h, h, list_dir, 'math') setlist(p, h); setshift(h, getshift(h)-get_attr(h, attr_yablshift)) --set_attr(h, attr_icflag, PROCESSED) end end return p end do local function mlist_callback_ltja(n, display_type) local 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); if not n then return nil end end return to_node(conv_jchar_to_hbox(n, (display_type=='display') and -1 or 0)) end -- LaTeX 2020-02-02 seems to have pre_mlist_to_hlist_filter callback if luatexbase.callbacktypes['pre_mlist_to_hlist_filter'] then luatexbase.add_to_callback('pre_mlist_to_hlist_filter', mlist_callback_ltja, 'ltj.mlist_to_hlist_pre', 1) else local mlist_to_hlist = node.mlist_to_hlist luatexbase.add_to_callback('mlist_to_hlist', function (n, display_type, penalties) return mlist_to_hlist(mlist_callback_ltja(n),display_type, penalties) end,'ltj.mlist_to_hlist', 1) end end luatexja.math = { is_math_letters = is_math_letters }