-- -- 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 or function(n) return getfield(n,'width') end local getdepth = node.direct.getdepth or function(n) return getfield(n,'depth') end local getwhd = node.direct.getwhd or function(n) return getfield(n,'width'), getfield(n,'height'),getfield(n,'depth') end local setwhd = node.direct.setwhd or function(n,w,h,d) setfield(n,'width',w); setfield(n,'height',h); setfield(n,'depth',d) end local setchar = node.direct.setchar or function(n,c) setfield(n,'char',c) end local setnext = node.direct.setnext or function(n,c) setfield(n,'next',c) end local setdir = node.direct.setdir or function(n,c) setfield(n,'dir',c) end local setkern = node.direct.setkern or function(n,c) setfield(n,'kern',c) end local setoffsets = node.direct.setoffsets or function(n,x,y) setfield(n,'xoffset',x); setfield(n,'yoffset',y) end local getoffsets = node.direct.getoffsets or function(n) return getfield(n,'xoffset'), getfield(n,'yoffset') end local node_traverse_id = node.direct.traverse_id local node_traverse = node.direct.traverse local node_new = node.direct.new 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 has_attr = node.direct.has_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 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_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 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 = has_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 = math.min, math.max 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 = has_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) 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) local xo, yo = getoffsets(p) setoffsets(p, xo + char_data.align*(fwidth-pwidth) - fshift.left, yo - fshift.down); setnext(p, nil) local box = node_new(id_hlist) setwhd(box, fwidth, fheight, fdepth) setfield(box, 'head', p) setfield(box, 'shift', kbl) setdir(box, dir) set_attr(box, attr_icflag, PACKED) 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_yoko = capsule_glyph_yoko -- 和文文字の位置補正(縦) -- UTR#50 で R もしくは Tr と指定されているが,縦組用グリフがないもの local function capsule_glyph_tate_rot(p, met, char_data, head, dir, asc) fshift.down = char_data.down; fshift.left = char_data.left fshift = call_callback("luatexja.set_width", fshift, met, char_data) local kbl = has_attr(p, attr_tkblshift) 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 local q head, q = node_remove(head, p) local xo, yo = getoffsets(p) setoffsets(p, xo + char_data.align*(fwidth-pwidth) - fshift.left, yo - fshift.down - asc); setnext(p, nil) local box = node_new(id_hlist) setwhd(box, fwidth, fheight, fdepth) setfield(box, 'head', p) setfield(box, 'shift', kbl) setdir(box, dir) set_attr(box, attr_icflag, PACKED) head = q and node_insert_before(head, q, box) or node_insert_after(head, node_tail(head), box) return q, head, box end local font_getfont = font.getfont local get_ascender, get_descender = ltju.get_ascender, ltju.get_descender local function capsule_glyph_tate(p, met, char_data, head, dir) if not char_data then return node_next(p), head end local fwidth, pwidth, ascender = char_data.width do local pf, pc = getfont(p), getchar(p) local feir = ltjf_font_extra_info[pf] if feir and feir.rotation and met.vert_activated then if feir.rotation[pc] and (has_attr(p, attr_vert_ori) or 0)<=0 then return capsule_glyph_tate_rot(p, met, char_data, head, dir, 0.5*(get_ascender(pf)-get_descender(pf))) end end pwidth, ascender = feir.vheight[pc]*met.size, feir.vorigin[pc]*met.size end 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 = char_data.height or 0 local fdepth = char_data.depth or 0 local xo, yo = getoffsets(p) local y_shift = xo + (has_attr(p,attr_tkblshift) or 0) local q head, q = node_remove(head, p) local box = node_new(id_hlist) setwhd(box, fwidth, fheight, fdepth) setfield(box, 'shift', y_shift) setdir(box, dir) setoffsets(p, -fshift.down, yo -(ascender + char_data.align*(fwidth-pwidth) - fshift.left) ) local ws = node_new(id_whatsit, sid_save) local wm = node_new(id_whatsit, sid_matrix) setfield(wm, 'data', '0 1 -1 0') local pwnh = -round(0.5*getwidth(p)) local k2 = node_new(id_kern, 1); setkern(k2, pwnh) local k3 = node_new(id_kern, 1); setkern(k3, -getwidth(p)-pwnh) local wr = node_new(id_whatsit, sid_restore) setfield(box, 'head', ws) setnext(ws, wm); setnext(wm, k2); setnext(k2, p); setnext(p, k3); setnext(k3, wr); set_attr(box, attr_icflag, PACKED) 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 local function capsule_glyph_math(p, met, char_data) 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') + (has_attr(p,attr_ykblshift) 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); setwhd(box, fwidth, fheight, fdepth) setfield(box, 'head', p) setfield(box, 'shift', y_shift) setdir(box, tex.mathdir) set_attr(box, attr_icflag, PACKED) return box end luatexja.setwidth.capsule_glyph_math = capsule_glyph_math -- 数式の位置補正 function luatexja.setwidth.apply_ashift_math(head, last, attr_ablshift) for p in node_traverse(head) do local pid = getid(p) if p==last then return elseif (has_attr(p, attr_icflag) or 0) ~= PROCESSED then if pid==id_hlist or pid==id_vlist then setfield(p, 'shift', getfield(p, 'shift') + (has_attr(p,attr_ablshift) or 0)) elseif pid==id_rule then local v = has_attr(p,attr_ablshift) or 0 setfield(p, 'height', getfield(p, 'height')-v) setfield(p, 'depth', 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') - (has_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 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 node_traverse_id(id_glyph, head) do y_adjust = has_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) 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