2 -- src/ltj-direction.lua
5 luatexja.load_module('base'); local ltjb = luatexja.base
6 luatexja.load_module('stack'); local ltjs = luatexja.stack
7 luatexja.direction = {}
9 local attr_dir = luatexbase.attributes['ltj@dir']
10 local attr_icflag = luatexbase.attributes['ltj@icflag']
12 local cat_lp = luatexbase.catcodetables['latex-package']
13 local Dnode = node.direct or node
14 local nullfunc = function (n) return n end
15 local to_node = (Dnode ~= node) and Dnode.tonode or nullfunc
16 local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
17 local has_attr = Dnode.has_attribute
18 local set_attr = Dnode.set_attribute
19 local insert_before = Dnode.insert_before
20 local insert_after = Dnode.insert_after
21 local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
22 local getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
23 local getlist = (Dnode ~= node) and Dnode.getlist or function(n) return n.head end
24 local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
25 local getfield = (Dnode ~= node) and Dnode.getfield or function(n, i) return n[i] end
26 local node_new = Dnode.new
27 local node_tail = Dnode.tail
28 local node_free = Dnode.free
29 local node_remove = Dnode.remove
30 local node_next = (Dnode ~= node) and Dnode.getnext or node.next
31 local traverse = Dnode.traverse
32 local traverse_id = Dnode.traverse_id
33 local start_time_measure, stop_time_measure
34 = ltjb.start_time_measure, ltjb.stop_time_measure
37 local id_kern = node.id('kern')
38 local id_hlist = node.id('hlist')
39 local id_vlist = node.id('vlist')
40 local id_whatsit = node.id('whatsit')
41 local sid_save = node.subtype('pdf_save')
42 local sid_restore = node.subtype('pdf_restore')
43 local sid_matrix = node.subtype('pdf_setmatrix')
44 local sid_user = node.subtype('user_defined')
46 local tex_nest = tex.nest
47 local tex_getcount = tex.getcount
48 local tex_set_attr = tex.setattribute
49 local PROCESSED = luatexja.icflag_table.PROCESSED
50 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
51 local PACKED = luatexja.icflag_table.PACKED
52 local DIR = luatexja.userid_table.DIR
53 local dir_tate = luatexja.dir_table.dir_tate
54 local dir_yoko = luatexja.dir_table.dir_yoko
55 local dir_dtou = luatexja.dir_table.dir_dtou
56 local dir_utod = luatexja.dir_table.dir_utod
57 local dir_math_mod = luatexja.dir_table.dir_math_mod
58 local dir_node_auto = luatexja.dir_table.dir_node_auto
59 local dir_node_manual = luatexja.dir_table.dir_node_manual
60 local function get_attr_icflag(p)
61 return (has_attr(p, attr_icflag) or 0) % PROCESSED_BEGIN_FLAG
66 local function adjust_badness(hd)
67 if not node_next(hd) and getid(hd)==id_whatsit and getsubtype(hd)==sid_user
68 and getfield(hd, 'user_id')==DIR then
69 -- avoid double whatsit
70 luatexja.global_temp=tex.globaldefs; tex.globaldefs=0
71 luatexja.hbadness_temp=tex.hbadness; tex.hbadness=10000
72 luatexja.vbadness_temp=tex.vbadness; tex.vbadness=10000
74 luatexja.global_temp = nil
75 luatexja.hbadness_temp=nil
76 luatexja.vbadness_temp=nil
80 local get_dir_count, get_adjust_dir_count
82 local function get_dir_count_inner(h)
84 if h.id==id_whatsit and h.subtype==sid_user and h.user_id==DIR then
85 local ic = node.has_attribute(h, attr_icflag) or 0
86 return (ic<PROCESSED_BEGIN_FLAG)
87 and (node.has_attribute(h,attr_dir)%dir_node_auto) or 0
95 function get_dir_count()
96 for i=tex_nest.ptr, 1, -1 do
97 local h = tex_nest[i].head.next
99 local t = get_dir_count_inner(h)
100 if t~=0 then return t end
103 return page_direction
105 function get_adjust_dir_count()
106 for i=tex_nest.ptr, 1, -1 do
107 local v = tex_nest[i]
108 local h, m = v.head.next, v.mode
109 if abs(m)== ltjs.vmode and h then
110 local t = get_dir_count_inner(h)
111 if t~=0 then return t end
114 return page_direction
116 luatexja.direction.get_dir_count = get_dir_count
117 luatexja.direction.get_adjust_dir_count = get_adjust_dir_count
121 -- \tate, \yoko,\dtou, \utod
123 local node_next = node.next
124 local node_set_attr = node.set_attribute
125 local node_traverse = node.traverse
126 local STCK = luatexja.userid_table.STCK
127 local IHB = luatexja.userid_table.IHB
129 local function test_list(h, lv)
131 return 2 -- need to create dir_whatsit
133 local flag = 2 -- need to create dir_whatsit
135 for p in node_traverse(h) do
136 if p.id==id_whatsit then
137 if p.subtype==sid_user then
140 flag = 1; w = w or p -- found
141 elseif not(uid==IHB or uid==STCK) then
142 flag = 0; break -- error
151 if flag==1 then -- move dir_whatsit w
158 local function set_list_direction(v, name)
159 local lv = tex_nest.ptr
161 v,name = get_dir_count(), nil
162 if lv>=1 and abs(tex_nest[lv-1].mode) == ltjs.mmode and v == dir_tate then
166 v,name = get_adjust_dir_count(), nil
168 if tex.currentgrouptype==6 then
171 "You can't use `\\" .. name .. "' in an align",
172 "To change direction in an align, \n"
173 .. "you shold use \\hbox or \\vbox.")
175 local h = (lv==0) and tex.lists.page_head or tex_nest[lv].head.next
176 local flag,w = test_list(h,lv)
178 if lv==0 and not page_direction then
179 page_direction = v -- for first call of \yoko (in luatexja-core.sty)
183 "Use `\\" .. tostring(name) .. "' at top of list",
184 'Direction change command by LuaTeX-ja is available\n'
185 .. 'only when the current list is null.')
188 node_set_attr(w, attr_dir, v)
189 if lv==0 then page_direction = v end
191 local w = node_new(id_whatsit, sid_user)
192 setfield(w, 'next', nil)
193 setfield(w, 'user_id', DIR)
194 setfield(w, 'type', 110)
195 set_attr(w, attr_dir, v)
197 if lv==0 then page_direction = v end
199 tex_set_attr('global', attr_icflag, 0)
201 tex_set_attr('global', attr_dir, 0)
203 luatexja.direction.set_list_direction = set_list_direction
206 -- ボックスに dir whatsit を追加
207 local function create_dir_whatsit(hd, gc, new_dir)
208 if getid(hd)==id_whatsit and
209 getsubtype(hd)==sid_user and getfield(hd, 'user_id')==DIR then
210 set_attr(hd, attr_icflag,
211 get_attr_icflag(hd) + PROCESSED_BEGIN_FLAG)
212 tex_set_attr('global', attr_icflag, 0)
215 local w = node_new(id_whatsit, sid_user)
216 setfield(w, 'next', hd)
217 setfield(w, 'user_id', DIR)
218 setfield(w, 'type', 110)
219 set_attr(w, attr_dir, new_dir)
220 set_attr(w, attr_icflag, PROCESSED_BEGIN_FLAG)
221 set_attr(hd, attr_icflag,
222 (has_attr(hd, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
223 + PROCESSED_BEGIN_FLAG)
224 tex_set_attr('global', attr_dir, 0)
225 tex_set_attr('global', attr_icflag, 0)
230 -- hpack_filter, vpack_filter, post_line_break_filter
231 -- の結果を組方向を明示するため,先頭に dir_node を設置
233 local function create_dir_whatsit_hpack(h, gc)
234 local hd = to_direct(h)
235 if gc=='fin_row' or gc == 'preamble' then
237 set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
238 tex_set_attr('global', attr_icflag, 0)
243 return to_node(create_dir_whatsit(hd, gc, ltjs.list_dir))
247 luatexbase.add_to_callback('hpack_filter',
248 create_dir_whatsit_hpack, 'ltj.create_dir_whatsit', 10000)
252 local function create_dir_whatsit_parbox(h, gc)
253 stop_time_measure('tex_linebreak')
254 -- start 側は ltj-debug.lua に
255 local new_dir, hd = ltjs.list_dir, to_direct(h)
256 for line in traverse_id(id_hlist, hd) do
257 local nh = getlist(line)
258 setfield(line, 'head', create_dir_whatsit(nh, gc, new_dir) )
259 set_attr(line, attr_dir, new_dir)
261 tex_set_attr('global', attr_dir, 0)
264 luatexbase.add_to_callback('post_linebreak_filter',
265 create_dir_whatsit_parbox, 'ltj.create_dir_whatsit', 10000)
268 local create_dir_whatsit_vbox
271 local id_glue, sid_parskip = node.id('glue'), 3
272 create_dir_whatsit_vbox = function (hd, gc)
273 ltjs.list_dir = get_dir_count()
274 -- remove dir whatsit
275 for x in traverse_id(id_whatsit, hd) do
276 if getsubtype(x)==sid_user and getfield(x, 'user_id')==DIR then
281 ltjs.list_dir =has_attr(hd,attr_dir)
282 local x = node_next(hd)
283 if getid(x)==id_glue and getsubtype(x)==sid_parskip then
284 node_remove(hd,x); node_free(x)
288 hd = node_remove(hd, wh[i]); node_free(wh[i]); wh[i] = nil
290 if gc=='fin_row' then -- gc == 'preamble' case is treated in dir_adjust_vpack
292 set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
293 tex_set_attr('global', attr_icflag, 0)
297 local n =node_next(hd)
299 local w = create_dir_whatsit(hd, gc, ltjs.list_dir)
300 -- move dir whatsit after hd
301 setfield(hd, 'next', w); setfield(w, 'next', n)
304 hd = create_dir_whatsit(hd, gc, ltjs.list_dir)
311 -- dir_node に包む方法を書いたテーブル
314 local floor = math.floor
315 local get_h =function (w,h,d) return h end
316 local get_d =function (w,h,d) return d end
317 local get_h_d =function (w,h,d) return h+d end
318 local get_h_d_neg =function (w,h,d) return -h-d end
319 local get_d_neg =function (w,h,d) return -d end
320 local get_w_half =function (w,h,d) return floor(0.5*w) end
321 local get_w_half_rem =function (w,h,d) return w-floor(0.5*w) end
322 local get_w_neg =function (w,h,d) return -w end
323 local get_w =function (w,h,d) return w end
324 local zero = function() return 0 end
326 [dir_yoko] = { -- yoko を
327 [dir_tate] = { -- tate 中で組む
330 depth = get_w_half_rem,
332 { 'whatsit', sid_save },
333 { 'rotate', '0 1 -1 0' },
334 { 'kern', function(w,h,d,nw,nh,nd) return -nd end },
336 { 'kern', function(w,h,d,nw,nh,nd) return nd-w end },
337 { 'whatsit', sid_restore },
340 { 'whatsit', sid_save },
341 { 'rotate', '0 1 -1 0' },
343 { 'box' , function(w,h,d,nw,nh,nd) return -nh-nd end },
344 { 'kern', get_h_d_neg},
345 { 'whatsit', sid_restore },
348 [dir_dtou] = { -- dtou 中で組む
353 { 'whatsit', sid_save },
354 { 'rotate', '0 -1 1 0' },
355 { 'kern', function(w,h,d,nw,nh,nd) return -nh end },
356 { 'box', get_d_neg },
357 { 'kern', function(w,h,d,nw,nh,nd) return nh-w end },
358 { 'whatsit', sid_restore },
361 { 'whatsit', sid_save },
362 { 'rotate', '0 -1 1 0' },
363 { 'kern', get_h_d_neg },
365 { 'whatsit', sid_restore },
369 [dir_tate] = { -- tate を
370 [dir_yoko] = { -- yoko 中で組む
375 { 'whatsit', sid_save },
376 { 'rotate', '0 -1 1 0' },
377 { 'kern', function (w,h,d,nw,nh,nd) return -nh end },
378 { 'box' , get_d_neg },
379 { 'kern', function (w,h,d,nw,nh,nd) return nh-w end },
380 { 'whatsit', sid_restore },
383 { 'whatsit', sid_save },
384 { 'rotate', '0 -1 1 0' },
385 { 'kern', get_h_d_neg },
387 { 'whatsit', sid_restore },
390 [dir_dtou] = { -- dtou 中で組む
395 { 'whatsit', sid_save },
396 { 'rotate', '-1 0 0 -1' },
397 { 'kern', get_w_neg },
398 { 'box', function (w,h,d,nw,nh,nd) return h-nd end },
399 { 'whatsit', sid_restore },
402 { 'whatsit', sid_save },
403 { 'rotate', '-1 0 0 -1' },
404 { 'kern', get_h_d_neg },
405 { 'box', get_w_neg },
406 { 'whatsit', sid_restore },
410 [dir_dtou] = { -- dtou を
411 [dir_yoko] = { -- yoko 中で組む
416 { 'whatsit', sid_save },
417 { 'rotate', '0 1 -1 0' },
418 { 'kern', function (w,h,d,nw,nh,nd) return -nd end },
420 { 'kern', function (w,h,d,nw,nh,nd) return nd-w end },
421 { 'whatsit', sid_restore },
425 { 'whatsit', sid_save },
426 { 'rotate', '0 1 -1 0' },
427 { 'box', function (w,h,d,nw,nh,nd) return -nd-nh end },
428 { 'kern', get_h_d_neg },
429 { 'whatsit', sid_restore },
432 [dir_tate] = { -- tate 中で組む
437 { 'whatsit', sid_save },
438 { 'rotate', '-1 0 0 -1' },
439 { 'kern', get_w_neg },
440 { 'box', function (w,h,d,nw,nh,nd) return h-nd end },
441 { 'whatsit', sid_restore },
444 { 'whatsit', sid_save },
445 { 'rotate', ' -1 0 0 -1' },
446 { 'kern', function (w,h,d,nw,nh,nd) return -nh-nd end },
447 { 'box', get_w_neg },
448 { 'kern', function (w,h,d,nw,nh,nd) return nh+nd-h-d end },
449 { 'whatsit', sid_restore },
456 -- 1st ret val: b の組方向
457 -- 2nd ret val はその DIR whatsit
458 local function get_box_dir(b, default)
459 start_time_measure('get_box_dir')
460 local dir = has_attr(b, attr_dir) or 0
461 local bh = getfield(b,'head')
462 -- b は insert node となりうるので getlist() は使えない
465 if bh and getid(bh)==id_whatsit
466 and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
468 dir = (dir==0) and has_attr(bh, attr_dir) or dir
472 stop_time_measure('get_box_dir')
473 return (dir==0 and default or dir), c
477 local getbox = tex.getbox
478 local function check_dir(reg_num)
479 start_time_measure('box_primitive_hook')
480 local list_dir = get_dir_count()%dir_math_mod
481 local b = getbox(tex_getcount('ltj@tempcnta'))
483 local box_dir = get_box_dir(to_direct(b), dir_yoko)
484 if box_dir%dir_math_mod ~= list_dir then
485 -- print('NEST', tex_nest.ptr, tex_getcount('ltj@tempcnta'))
486 -- luatexja.ext_show_node_list(
487 -- (tex_nest.ptr==0) and tex.lists.page_head or tex_nest[tex_nest.ptr].head,
488 -- 'LIST' .. tostring(list_dir) .. '> ', print)
489 -- luatexja.ext_show_node_list(b, 'BOX' .. tostring(box_dir) .. '> ', print)
492 "Incompatible direction list can't be unboxed",
493 'I refuse to unbox a box in differrent direction.')
496 if luatexja.global_temp and tex.globaldefs~=luatexja.global_temp then
497 tex.globaldefs = luatexja.global_temp
499 stop_time_measure('box_primitive_hook')
501 luatexja.direction.check_dir = check_dir
504 -- dir_node に包まれている「本来の中身」を取り出し,
506 local function unwrap_dir_node(b, head, box_dir)
507 -- b: dir_node, head: the head of list, box_dir:
508 -- return values are (new head), (next of b), (contents), (dir of contents)
509 luatexja.ext_show_node(to_node(b), '>> ', print)
510 local bh = getlist(b)
513 nh = insert_before(head, b, bh)
514 nh, nb = node_remove(nh, b)
515 setfield(b, 'next', nil)
518 local shift_old, b_dir, wh = nil, get_box_dir(bh, 0)
520 Dnode.flush_list(getfield(wh, 'value'))
521 setfield(wh, 'value', nil)
523 return nh, nb, bh, b_dir
526 -- is_manual: 寸法変更に伴うものか?
527 local function create_dir_node(b, b_dir, new_dir, is_manual)
528 local info = dir_node_aux[b_dir%dir_math_mod][new_dir%dir_math_mod]
529 local w = getfield(b, 'width')
530 local h = getfield(b, 'height')
531 local d = getfield(b, 'depth')
532 local db = node_new(getid(b)) -- dir_node
533 set_attr(db, attr_dir,
534 new_dir + (is_manual and dir_node_manual or dir_node_auto))
535 set_attr(db, attr_icflag, PROCESSED)
536 set_attr(b, attr_icflag, PROCESSED)
537 tex_set_attr('global', attr_dir, 0)
538 tex_set_attr('global', attr_icflag, 0)
539 setfield(db, 'dir', getfield(b, 'dir'))
540 setfield(db, 'shift', 0)
541 setfield(db, 'width', info.width(w,h,d))
542 setfield(db, 'height', info.height(w,h,d))
543 setfield(db, 'depth', info.depth(w,h,d))
548 local make_dir_whatsit, process_dir_node
550 make_dir_whatsit = function (head, b, new_dir, origin)
551 new_dir = new_dir%dir_math_mod
552 -- head: list head, b: box
553 -- origin: コール元 (for debug)
554 -- return value: (new head), (next of b), (new b), (is_b_dir_node)
555 -- (new b): b か dir_node に被せられた b
556 local bh = getlist(b)
557 local box_dir, dn = get_box_dir(b, ltjs.list_dir)
558 -- 既に b の中身にあるwhatsit
560 if box_dir%dir_math_mod==new_dir then
561 if box_dir>=dir_node_auto then
562 -- dir_node としてカプセル化されている
563 local _, dnc = get_box_dir(b, 0)
564 if dnc then -- free all other dir_node
565 Dnode.flush_list(getfield(dnc, 'value'))
566 setfield(dnc, 'value', nil)
568 set_attr(b, attr_dir, box_dir%dir_math_mod + dir_node_auto)
569 return head, node_next(b), b, true
571 -- 組方向が一緒 (up to math dir) のボックスなので,何もしなくて良い
572 return head, node_next(b), b, false
576 local nh, nb, ret, flag
577 if box_dir>= dir_node_auto then -- unwrap
579 head, nb, b, b_dir = unwrap_dir_node(b, head, box_dir)
581 if b_dir%dir_math_mod==new_dir then
582 -- dir_node の中身が周囲の組方向とあっている
583 return head, nb, b, false
584 else box_dir = b_dir end
586 box_dir = box_dir%dir_math_mod
588 local dnh = getfield(dn, 'value')
589 for x in traverse(dnh) do
590 if has_attr(x, attr_dir)%dir_math_mod == new_dir then
591 setfield(dn, 'value', to_node(node_remove(dnh, x)))
595 Dnode.flush_list(getfield(dn, 'value'))
596 db = db or create_dir_node(b, box_dir, new_dir, false)
597 local w = getfield(b, 'width')
598 local h = getfield(b, 'height')
599 local d = getfield(b, 'depth')
600 local dn_w = getfield(db, 'width')
601 local dn_h = getfield(db, 'height')
602 local dn_d = getfield(db, 'depth')
603 nh, nb = insert_before(head, b, db), nil
604 nh, nb = node_remove(nh, b)
605 setfield(b, 'next', nil); setfield(db, 'head', b)
607 return nh, nb, ret, flag
610 process_dir_node = function (hd, gc)
611 local x, new_dir = hd, ltjs.list_dir or dir_yoko
614 if (xid==id_hlist and get_attr_icflag(x)~=PACKED)
615 or xid==id_vlist then
616 hd, x = make_dir_whatsit(hd, x, new_dir, 'process_dir_node:' .. gc)
625 local node_prev = (Dnode~=node) and Dnode.getprev or node.prev
626 local function lastbox_hook()
627 start_time_measure('box_primitive_hook')
628 local bn = tex_nest[tex_nest.ptr].tail
630 local b, head = to_direct(bn), to_direct(tex_nest[tex_nest.ptr].head)
632 if bid==id_hlist or bid==id_vlist then
633 local box_dir = get_box_dir(b, 0)
634 if box_dir>= dir_node_auto then -- unwrap dir_node
635 local p = node_prev(b)
636 local dummy1, dummy2, nb = unwrap_dir_node(b, nil, box_dir)
637 setfield(p, 'next', nb); tex_nest[tex_nest.ptr].tail = to_node(nb)
638 setfield(b, 'next', nil); setfield(b, 'head', nil)
641 local _, wh = get_box_dir(b, 0) -- clean dir_node attached to the box
643 Dnode.flush_list(getfield('value', wh))
644 setfield(wh, 'value', nil)
648 stop_time_measure('box_primitive_hook')
651 luatexja.direction.make_dir_whatsit = make_dir_whatsit
652 luatexja.direction.lastbox_hook = lastbox_hook
655 -- \wd, \ht, \dp の代わり
657 local getbox, setdimen = tex.getbox, tex.setdimen
658 local function get_box_dim_common(key, s, l_dir)
660 local s_dir, wh = get_box_dir(s, dir_yoko)
661 s_dir = s_dir%dir_math_mod
662 if s_dir ~= l_dir then
663 local not_found = true
664 for x in traverse(getfield(wh, 'value')) do
665 if l_dir == has_attr(x, attr_dir)%dir_node_auto then
666 setdimen('ltj@tempdima', getfield(x, key))
667 not_found = false; break
671 local w = getfield(s, 'width')
672 local h = getfield(s, 'height')
673 local d = getfield(s, 'depth')
674 setdimen('ltj@tempdima',
675 dir_node_aux[s_dir][l_dir][key](w,h,d))
678 setdimen('ltj@tempdima', getfield(s, key))
681 local function get_box_dim(key, n)
682 local gt = tex.globaldefs; tex.globaldefs = 0
685 local l_dir = (get_dir_count())%dir_math_mod
687 local b_dir = get_box_dir(s,dir_yoko)
688 if b_dir<dir_node_auto then
689 get_box_dim_common(key, s, l_dir)
690 elseif b_dir%dir_math_mod==l_dir then
691 setdimen('ltj@tempdima', getfield(s, key))
693 get_box_dim_common(key, getlist(s), l_dir)
696 setdimen('ltj@tempdima', 0)
700 luatexja.direction.get_box_dim = get_box_dim
702 -- return value: (changed dimen of box itself?)
703 local function set_box_dim_common(key, s, l_dir)
704 local s_dir, wh = get_box_dir(s, dir_yoko)
705 s_dir = s_dir%dir_math_mod
706 if s_dir ~= l_dir then
708 wh = create_dir_whatsit(getlist(s), 'set_box_dim', s_dir)
709 setfield(s, 'head', wh)
712 local dnh = getfield(wh, 'value')
713 for x in traverse(dnh) do
714 if has_attr(x, attr_dir)%dir_node_auto==l_dir then
719 db = create_dir_node(s, s_dir, l_dir, true)
720 setfield(db, 'next', dnh)
721 setfield(wh, 'value',to_node(db))
723 setfield(db, key, tex.getdimen('ltj@tempdima'))
726 setfield(s, key, tex.getdimen('ltj@tempdima'))
728 -- change dimension of dir_nodes which are created "automatically"
730 = getfield(s,'width'), getfield(s, 'height'), getfield(s, 'depth')
731 for x in traverse(getfield(wh, 'value')) do
732 local x_dir = has_attr(x, attr_dir)
733 if x_dir<dir_node_manual then
734 local info = dir_node_aux[s_dir][x_dir%dir_node_auto]
735 setfield(x, 'width', info.width(bw,bh,bd))
736 setfield(x, 'height', info.height(bw,bh,bd))
737 setfield(x, 'depth', info.depth(bw,bh,bd))
744 local function set_box_dim(key)
745 local n = tex_getcount('ltj@tempcnta')
748 local l_dir = (get_dir_count())%dir_math_mod
750 local b_dir = get_box_dir(s,dir_yoko)
751 if b_dir<dir_node_auto then
752 set_box_dim_common(key, s, l_dir)
753 elseif b_dir%dir_math_mod == l_dir then
755 setfield(s, key, tex.getdimen('ltj@tempdima'))
756 if b_dir<dir_node_manual then
757 set_attr(s, attr_dir, b_dir%dir_node_auto + dir_node_manual)
760 local sid, b = getid(s), getlist(s)
761 local info = dir_node_aux[get_box_dir(b,dir_yoko)%dir_math_mod][b_dir%dir_node_auto]
763 = getfield(b,'width'), getfield(b, 'height'), getfield(b, 'depth')
765 = getfield(s,'width'), getfield(s, 'height'), getfield(s, 'depth')
766 if set_box_dim_common(key, b, l_dir) and b_dir<dir_node_manual then
767 -- re-calculate dimension of s, if s is created "automatically"
768 if b_dir<dir_node_manual then
769 setfield(s, 'width', info.width(bw,bh,bd))
770 setfield(s, 'height', info.height(bw,bh,bd))
771 setfield(s, 'depth', info.depth(bw,bh,bd))
777 luatexja.direction.set_box_dim = set_box_dim
781 local getbox = tex.getbox
782 local function get_register_dir(n)
786 local b_dir = get_box_dir(s, dir_yoko)
787 if b_dir<dir_node_auto then
790 local b_dir = get_box_dir(
791 node_next(node_next(node_next(getlist(s)))), dir_yoko)
798 luatexja.direction.get_register_dir = get_register_dir
802 local getbox, setbox, copy_list = tex.getbox, tex.setbox, Dnode.copy_list
804 function luatexja.direction.raise_box()
805 start_time_measure('box_primitive_hook')
806 local list_dir = get_dir_count()
807 local s = getbox('ltj@afbox')
809 local sd = to_direct(s)
810 local box_dir = get_box_dir(sd, dir_yoko)
811 if box_dir%dir_math_mod ~= list_dir then
815 copy_list(make_dir_whatsit(sd, sd, list_dir, 'box_move'))
816 -- without copy_list, we get a segfault
821 stop_time_measure('box_primitive_hook')
825 -- PACKED の hbox から文字を取り出す
826 -- luatexja.jfmglue.check_box などで使用
828 local function glyph_from_packed(h)
830 return (getid(b)==id_kern)
831 and node_next(node_next(node_next(node_next(b)))) or b
833 luatexja.direction.glyph_from_packed = glyph_from_packed
836 -- adjust and insertion
837 local id_adjust = node.id('adjust')
838 function luatexja.direction.check_adjust_direction()
839 start_time_measure('box_primitive_hook')
840 local list_dir = get_adjust_dir_count()
841 local a = tex_nest[tex_nest.ptr].tail
842 local ad = to_direct(a)
843 if a and getid(ad)==id_adjust then
844 local adj_dir = get_box_dir(ad)
845 if list_dir~=adj_dir then
848 'Direction Incompatible',
849 "\\vadjust's argument and outer vlist must have same direction.")
853 stop_time_measure('box_primitive_hook')
858 local split_dir_whatsit
859 local function dir_adjust_vpack(h, gc)
860 start_time_measure('direction_vpack')
861 local hd = to_direct(h)
862 if gc=='split_keep' then
863 -- supply dir_whatsit
864 hd = create_dir_whatsit_vbox(hd, gc)
865 split_dir_whatsit = hd
866 elseif gc=='split_off' then
869 if bh and getid(bh)==id_whatsit
870 and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
871 ltjs.list_dir = has_attr(bh, attr_dir); break
875 if split_dir_whatsit then
876 -- adjust direction of 'split_keep'
877 set_attr(split_dir_whatsit, attr_dir, ltjs.list_dir)
879 split_dir_whatsit=nil
880 elseif gc=='preamble' then
881 split_dir_whatsit=nil
884 hd = process_dir_node(create_dir_whatsit_vbox(hd, gc), gc)
885 split_dir_whatsit=nil
887 stop_time_measure('direction_vpack')
890 luatexbase.add_to_callback('vpack_filter',
892 'ltj.direction', 10000)
896 -- supply direction whatsit to the main vertical list "of the next page"
897 local function dir_adjust_pre_output(h, gc)
898 return to_node(create_dir_whatsit_vbox(to_direct(h), gc))
900 luatexbase.add_to_callback('pre_output_filter',
901 dir_adjust_pre_output,
902 'ltj.direction', 10000)
904 function luatexja.direction.remove_end_whatsit()
905 local h=tex.lists.page_head
906 if h and (not h.next) and
907 h.id==id_whatsit and h.subtype==sid_user and
908 h.user_id == DIR then
909 tex.lists.page_head = nil
917 local function dir_adjust_buildpage(info)
919 local head = to_direct(tex.lists.contrib_head)
923 = make_dir_whatsit(head,
927 tex.lists.contrib_head = to_node(head)
931 luatexbase.add_to_callback('buildpage_filter',
932 dir_adjust_buildpage,
933 'ltj.direction', 10000)
936 -- finalize (executed just before \shipout)
937 -- we supply correct pdfsavematrix nodes etc. inside dir_node
940 local function finalize_dir_node(db,new_dir)
941 local b = getlist(db)
943 local box_dir = get_box_dir(b, dir_yoko)%dir_math_mod
944 setfield(db, 'head', nil)
945 local w = getfield(b, 'width')
946 local h = getfield(b, 'height')
947 local d = getfield(b, 'depth')
948 local dn_w = getfield(db, 'width')
949 local dn_h = getfield(db, 'height')
950 local dn_d = getfield(db, 'depth')
951 local db_head, db_tail = nil
952 for _,v in ipairs(dir_node_aux[box_dir][new_dir][getid(b)]) do
953 local cmd, arg, nn = v[1], v[2]
955 nn = node_new(id_kern)
956 setfield(nn, 'kern', arg(w, h, d, dn_w, dn_h, dn_d))
957 elseif cmd=='whatsit' then
958 nn = node_new(id_whatsit, arg)
959 elseif cmd=='rotate' then
960 nn = node_new(id_whatsit, sid_matrix)
961 setfield(nn, 'data', arg)
962 elseif cmd=='box' then
963 nn = b; setfield(b, 'next', nil)
964 setfield(nn, 'shift', arg(w, h, d, dn_w, dn_h, dn_d))
967 insert_after(db_head, db_tail, nn)
970 db_head, db_tail = nn, nn
972 setfield(db, 'head', db_head)
975 finalize_inner = function (box)
976 for n in traverse(getlist(box)) do
978 if (nid==id_hlist or nid==id_vlist) then
979 local ndir = get_box_dir(n, dir_yoko)
980 if ndir>=dir_node_auto then -- n is dir_node
981 finalize_dir_node(n, ndir%dir_math_mod)
988 local getbox = tex.getbox
989 function luatexja.direction.finalize()
990 finalize_inner(to_direct(tex.getbox("AtBeginShipoutBox")))