-- -- ltj-setwidth.lua -- luatexja.load_module 'base'; local ltjb = luatexja.base luatexja.load_module 'stack'; local ltjs = luatexja.stack luatexja.load_module 'jfont'; local ltjf = luatexja.jfont luatexja.load_module 'direction'; local ltjd = luatexja.direction luatexja.load_module 'lotf_aux'; local ltju = luatexja.lotf_aux local setfield = node.direct.setfield local getfield = node.direct.getfield local getid = node.direct.getid local getfont = node.direct.getfont local getlist = node.direct.getlist local getchar = node.direct.getchar local getsubtype = node.direct.getsubtype local getwidth = node.direct.getwidth local getshift = node.direct.getshift local getoffsets = node.direct.getoffsets local getheight = node.direct.getheight local getdepth = node.direct.getdepth local getwhd = node.direct.getwhd local setwhd = node.direct.setwhd local setchar = node.direct.setchar local setnext = node.direct.setnext local setdir = node.direct.setdir local setkern = node.direct.setkern local setshift = node.direct.setshift local setoffsets = node.direct.setoffsets local setheight = node.direct.setheight local setdepth = node.direct.setdepth local setlist = node.direct.setlist local node_traverse = node.direct.traverse local node_copy = node.direct.copy local node_remove = node.direct.remove local node_tail = node.direct.tail local node_next = node.direct.getnext local get_attr = node.direct.get_attribute local set_attr = node.direct.set_attribute local node_insert_before = node.direct.insert_before local node_insert_after = node.direct.insert_after local round = tex.round local node_new = luatexja.dnode_new local id_glyph = node.id 'glyph' local id_kern = node.id 'kern' local id_hlist = node.id 'hlist' local id_vlist = node.id 'vlist' local id_rule = node.id 'rule' local id_math = node.id 'math' local id_whatsit= node.id 'whatsit' local sid_save = node.subtype 'pdf_save' local sid_restore = node.subtype 'pdf_restore' local sid_matrix = node.subtype 'pdf_setmatrix' local dir_tate = luatexja.dir_table.dir_tate local attr_yablshift = luatexbase.attributes['ltj@yablshift'] local attr_ykblshift = luatexbase.attributes['ltj@ykblshift'] local attr_tkblshift = luatexbase.attributes['ltj@tkblshift'] local attr_icflag = luatexbase.attributes['ltj@icflag'] local attr_vert_ori = luatexbase.attributes['ltj@vert@ori'] local ltjf_font_extra_info = ltjf.font_extra_info local ltjs_orig_char_table = ltjs.orig_char_table local PACKED = luatexja.icflag_table.PACKED local PROCESSED = luatexja.icflag_table.PROCESSED local get_pr_begin_flag do local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG local floor = math.floor get_pr_begin_flag = function (p) local i = get_attr(p, attr_icflag) or 0 return i - i%PROCESSED_BEGIN_FLAG end end local ltjw = {} --export luatexja.setwidth = ltjw luatexbase.create_callback("luatexja.set_width", "data", function (fstable, fmtable, char_data) return fstable end) local call_callback = luatexbase.call_callback local fshift = { down = 0, left = 0 } local min, max, floor, abs = math.min, math.max, math.floor, math.abs local rule_subtype = (status.luatex_version>=85) and 3 or 0 -- 和文文字の位置補正(横) local function capsule_glyph_yoko(p, met, char_data, head, dir) if not char_data then return node_next(p), head, p end fshift.down = char_data.down; fshift.left = char_data.left fshift = call_callback("luatexja.set_width", fshift, met, char_data) local kbl = get_attr(p, attr_ykblshift) or 0 -- -- f*: whd specified in JFM local pwidth, pheight,pdepth = getwhd(p) local fwidth = char_data.width or pwidth local fheight= char_data.height or pheight local fdepth = char_data.depth or pdepth if pwidth==fwidth then -- 補正後glyph node は ht: p.height - kbl - down, dp: p.depth + min(0, kbl+down) を持つ -- 設定されるべき寸法: ht: fheight - kbl, dp: fdepth + kbl local ht_diff = fheight + fshift.down - pheight local dp_diff = fdepth + kbl - pdepth - min(kbl + fshift.down, 0) if ht_diff == 0 and dp_diff ==0 then -- offset only set_attr(p, attr_icflag, PROCESSED) local xo, yo = getoffsets(p) setoffsets(p, xo - fshift.left, yo - kbl - fshift.down) return node_next(p), head, p elseif ht_diff >= 0 and dp_diff >=0 then -- rule local box = node_new(id_rule, rule_subtype, p) local xo, yo = getoffsets(p) setoffsets(p, xo, yo - kbl - fshift.down) setwhd(box, 0, fheight - kbl, fdepth + kbl) setdir(box, dir) set_attr(box, attr_icflag, PACKED) set_attr(p, attr_icflag, PROCESSED) head = p and node_insert_before(head, p, box) or node_insert_after(head, node_tail(head), box) return node_next(p), head, p, box end end local q; head, q = node_remove(head, p) if pwidth > fwidth then if char_data.round_threshold then local frac = pwidth / fwidth local quot = floor(frac+0.5) if abs(frac-quot) ', print) local xo, yo = getoffsets(p) --pwidth = pwidth - yo fwidth = fwidth or pwidth if pwidth>fwidth and char_data.round_threshold then local frac = pwidth / fwidth local quot = floor(frac+0.5) if abs(frac-quot) ', print) head = q and node_insert_before(head, q, box) or node_insert_after(head, node_tail(head), box) return q, head, box end luatexja.setwidth.capsule_glyph_tate = capsule_glyph_tate do local font_getfont, famfont = font.getfont, node.family_font local cap_math_aux = { [-1]=function() return 1 end, [0]=function() return 1 end, [1]=function() local sf, tf = famfont(2,1), famfont(2,0) return font_getfont(sf).size/font_getfont(tf).size end, [2]=function() local ssf, tf = famfont(2,2), famfont(2,0) return font_getfont(ssf).size/font_getfont(tf).size end } setmetatable(cap_math_aux, {__index=function(t,k) return t[2] end}) local function capsule_glyph_math(p, met, char_data, sty) if not char_data then return nil end local fwidth, pwidth = char_data.width, getwidth(p) fwidth = fwidth or pwidth fshift.down = char_data.down; fshift.left = char_data.left fshift = call_callback("luatexja.set_width", fshift, met, char_data) local fheight, fdepth = char_data.height, char_data.depth local y_shift = - getfield(p, 'yoffset') + cap_math_aux[sty]()* ((get_attr(p,attr_ykblshift) or 0) - (get_attr(p,attr_yablshift) or 0)) setfield(p, 'yoffset', -fshift.down) setfield(p, 'xoffset', getfield(p, 'xoffset') + char_data.align*(fwidth-pwidth) - fshift.left) local box = node_new(id_hlist, nil, p); setwhd(box, fwidth, fheight, fdepth) setlist(box, p); setshift(box, y_shift) setdir(box, tex.mathdir) set_attr(box, attr_icflag, PACKED) return box end luatexja.setwidth.capsule_glyph_math = capsule_glyph_math end -- 数式の位置補正 function luatexja.setwidth.apply_ashift_math(head, last, attr_ablshift) for p, pid in node_traverse(head) do if p==last then return elseif (get_attr(p, attr_icflag) or 0) ~= PROCESSED then if pid==id_hlist or pid==id_vlist then setshift(p, getshift(p) + (get_attr(p,attr_ablshift) or 0)) elseif pid==id_rule then local v = get_attr(p,attr_ablshift) or 0 setheight(p, getheight(p)-v); setdepth(p, getdepth(p)+v) set_attr(p, attr_icflag, PROCESSED) elseif pid==id_glyph then -- 欧文文字; 和文文字は pid == id_hlist の場合で処理される -- (see conv_jchar_to_hbox_A in ltj-math.lua) setfield(p, 'yoffset', getfield(p, 'yoffset') - (get_attr(p,attr_ablshift) or 0)) end set_attr(p, attr_icflag, PROCESSED) end end end -- discretionary の位置補正 do local attr_yablshift = luatexbase.attributes['ltj@yablshift'] local attr_tablshift = luatexbase.attributes['ltj@tablshift'] local attr_ablshift local disc, tex_dir local traverse_glyph = node.direct.traverse_glyph local function ashift_disc_inner(field) local head = getfield(disc, field) if not head then return end local y_adjust, node_depth, adj_depth = 0, 0, 0 for lp in traverse_glyph(head) do y_adjust = get_attr(lp,attr_ablshift) or 0 local ld = getdepth(lp) node_depth = max(ld + min(y_adjust, 0), node_depth) adj_depth = (y_adjust>0) and max(ld + y_adjust, adj_depth) or adj_depth setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust) end if adj_depth>node_depth then local r = node_new(id_rule,rule_subtype, head) setwhd(r, 0, 0, adj_depth); setdir(r, tex_dir) set_attr(r, attr_icflag, PROCESSED) if field=='post' then node_insert_after(head, head, r) else setfield(disc, field, (node_insert_before(head, head, r))) end end end function luatexja.setwidth.apply_ashift_disc(d, is_dir_tate, dir) attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift disc, tex_dir = d, dir ashift_disc_inner 'pre' ashift_disc_inner 'post' ashift_disc_inner 'replace' end end