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 to_node = node.direct.tonode
14 local to_direct = node.direct.todirect
15 local has_attr = node.direct.has_attribute
16 local set_attr = node.direct.set_attribute
17 local insert_before = node.direct.insert_before
18 local insert_after = node.direct.insert_after
19 local getid = node.direct.getid
20 local getsubtype = node.direct.getsubtype
21 local getlist = node.direct.getlist
22 local setfield = node.direct.setfield
23 local getfield = node.direct.getfield
24 local node_new = node.direct.new
25 local node_tail = node.direct.tail
26 local node_free = node.direct.free
27 local node_remove = node.direct.remove
28 local node_next = node.direct.getnext
29 local traverse = node.direct.traverse
30 local traverse_id = node.direct.traverse_id
31 local start_time_measure, stop_time_measure
32 = ltjb.start_time_measure, ltjb.stop_time_measure
35 local id_kern = node.id('kern')
36 local id_hlist = node.id('hlist')
37 local id_vlist = node.id('vlist')
38 local id_whatsit = node.id('whatsit')
39 local sid_save = node.subtype('pdf_save')
40 local sid_restore = node.subtype('pdf_restore')
41 local sid_matrix = node.subtype('pdf_setmatrix')
42 local sid_user = node.subtype('user_defined')
44 local tex_nest = tex.nest
45 local tex_getcount = tex.getcount
46 local ensure_tex_attr = ltjb.ensure_tex_attr
47 local PROCESSED = luatexja.icflag_table.PROCESSED
48 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
49 local PACKED = luatexja.icflag_table.PACKED
50 local DIR = luatexja.userid_table.DIR
51 local dir_tate = luatexja.dir_table.dir_tate
52 local dir_yoko = luatexja.dir_table.dir_yoko
53 local dir_dtou = luatexja.dir_table.dir_dtou
54 local dir_utod = luatexja.dir_table.dir_utod
55 local dir_math_mod = luatexja.dir_table.dir_math_mod
56 local dir_node_auto = luatexja.dir_table.dir_node_auto
57 local dir_node_manual = luatexja.dir_table.dir_node_manual
58 local function get_attr_icflag(p)
59 return (has_attr(p, attr_icflag) or 0) % PROCESSED_BEGIN_FLAG
66 local node_copy = node.direct.copy
68 for _,i in pairs({dir_tate, dir_yoko, dir_dtou, dir_utod}) do
69 local w = node_new(id_whatsit, sid_user)
70 set_attr(w, attr_dir, i)
71 setfield(w, 'user_id', DIR)
72 setfield(w, 'type', 110)
73 setfield(w, 'next', nil)
74 dir_pool[i] = function () return node_copy(w) end
79 local function adjust_badness(hd)
80 if not node_next(hd) and getid(hd)==id_whatsit and getsubtype(hd)==sid_user
81 and getfield(hd, 'user_id')==DIR then
82 -- avoid double whatsit
83 luatexja.global_temp=tex.globaldefs; tex.globaldefs=0
84 luatexja.hbadness_temp=tex.hbadness; tex.hbadness=10000
85 luatexja.vbadness_temp=tex.vbadness; tex.vbadness=10000
87 luatexja.global_temp = nil
88 luatexja.hbadness_temp=nil
89 luatexja.vbadness_temp=nil
93 local get_dir_count, get_adjust_dir_count
95 local function get_dir_count_inner(h)
97 if h.id==id_whatsit and h.subtype==sid_user and h.user_id==DIR then
98 local ic = node.has_attribute(h, attr_icflag) or 0
99 return (ic<PROCESSED_BEGIN_FLAG)
100 and (node.has_attribute(h,attr_dir)%dir_node_auto) or 0
108 function get_dir_count()
109 for i=tex_nest.ptr, 1, -1 do
110 local h = tex_nest[i].head.next
112 local t = get_dir_count_inner(h)
113 if t~=0 then return t end
116 return page_direction
118 function get_adjust_dir_count()
119 for i=tex_nest.ptr, 1, -1 do
120 local v = tex_nest[i]
121 local h, m = v.head.next, v.mode
122 if abs(m)== ltjs.vmode and h then
123 local t = get_dir_count_inner(h)
124 if t~=0 then return t end
127 return page_direction
129 luatexja.direction.get_dir_count = get_dir_count
130 luatexja.direction.get_adjust_dir_count = get_adjust_dir_count
134 -- \tate, \yoko,\dtou, \utod
136 local node_next = node.next
137 local node_set_attr = node.set_attribute
138 local node_traverse = node.traverse
139 local STCK = luatexja.userid_table.STCK
140 local IHB = luatexja.userid_table.IHB
141 local id_local = node.id('local_par')
143 local function test_list(h, lv)
145 return 2 -- need to create dir_whatsit
147 local flag = 2 -- need to create dir_whatsit
149 for p in node_traverse(h) do
150 if p.id==id_whatsit then
155 flag = 1; w = w or p -- found
156 elseif not(uid==IHB or uid==STCK) then
157 flag = 0; break -- error
160 elseif p.id~=id_local then
164 if flag==1 then -- dir_whatsit already exists
171 local node_next_node, node_tail_node = node.next, node.tail
172 local insert_after_node = node.insert_after
173 function luatexja.direction.set_list_direction_hook(v)
174 local lv = tex_nest.ptr -- must be >= 1
177 if abs(tex_nest[lv-1].mode) == ltjs.mmode and v == dir_tate then
181 v = get_adjust_dir_count()
183 local h = tex_nest[lv].head
184 local hn = node.next(h)
185 hn = (hn and hn.id==id_local) and hn or h
186 local w = to_node(dir_pool[v]())
187 insert_after_node(h, hn, w)
188 tex_nest[lv].tail = node_tail_node(w)
189 ensure_tex_attr(attr_icflag, 0)
190 ensure_tex_attr(attr_dir, 0)
193 local function set_list_direction(v, name)
194 local lv = tex_nest.ptr
196 v,name = get_dir_count(), nil
197 if lv>=1 and abs(tex_nest[lv-1].mode) == ltjs.mmode and v == dir_tate then
201 v,name = get_adjust_dir_count(), nil
203 local current_nest = tex_nest[lv]
204 if tex.currentgrouptype==6 then
207 "You can't use `\\" .. name .. "' in an align",
208 "To change the direction in an align, \n"
209 .. "you shold use \\hbox or \\vbox.")
210 elseif current_nest.mode == ltjs.hmode or abs(current_nest.mode) == ltjs.mmode then
213 "Improper `\\" .. name .. "'",
214 'You cannot change the direction in unrestricted horizontal mode \n'
215 .. 'nor math modes.')
217 local h = (lv==0) and tex.lists.page_head or current_nest.head.next
218 local flag,w = test_list(h,lv)
220 if lv==0 and not page_direction then
221 page_direction = v -- for first call of \yoko (in luatexja-core.sty)
225 "Use `\\" .. tostring(name) .. "' at top of list",
226 'Direction change command by LuaTeX-ja is available\n'
227 .. 'only when the current list is null.')
230 node_set_attr(w, attr_dir, v)
231 if lv==0 then page_direction = v end
234 else -- flag == 2: need to create dir whatsit.
235 local h = current_nest.head
236 local hn = node.next(h)
237 hn = (hn and hn.id==id_local) and hn or h
238 local w = to_node(dir_pool[v]())
239 insert_after_node(h,hn,w)
240 current_nest.tail = node_tail_node(w)
242 ensure_tex_attr(attr_icflag, 0)
244 ensure_tex_attr(attr_dir, 0)
246 luatexja.direction.set_list_direction = set_list_direction
249 -- ボックスに dir whatsit を追加
250 local function create_dir_whatsit(hd, gc, new_dir)
251 if getid(hd)==id_whatsit and
252 getsubtype(hd)==sid_user and getfield(hd, 'user_id')==DIR then
253 set_attr(hd, attr_icflag,
254 get_attr_icflag(hd) + PROCESSED_BEGIN_FLAG)
255 local n =node_next(hd)
257 set_attr(n, attr_icflag,
258 get_attr_icflag(n) + PROCESSED_BEGIN_FLAG)
260 ensure_tex_attr(attr_icflag, 0)
263 local w = dir_pool[new_dir]()
264 setfield(w, 'next', hd)
265 set_attr(w, attr_icflag, PROCESSED_BEGIN_FLAG)
266 set_attr(hd, attr_icflag,
267 get_attr_icflag(hd) + PROCESSED_BEGIN_FLAG)
268 ensure_tex_attr(attr_icflag, 0)
269 ensure_tex_attr(attr_dir, 0)
274 -- hpack_filter, vpack_filter, post_line_break_filter
275 -- の結果を組方向を明示するため,先頭に dir_node を設置
278 local function create_dir_whatsit_hpack(h, gc)
279 local hd = to_direct(h)
280 if gc=='fin_row' then
282 for p in traverse_id(15, hd) do -- unset
283 if get_box_dir(p, 0)==0 then
284 setfield(p, 'head', create_dir_whatsit(getlist(p), 'fin_row', ltjs.list_dir))
287 set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
288 ensure_tex_attr(attr_icflag, 0)
291 elseif gc == 'preamble' then
294 return to_node(create_dir_whatsit(hd, gc, ltjs.list_dir))
298 ltjb.add_to_callback('hpack_filter',
299 create_dir_whatsit_hpack, 'ltj.create_dir_whatsit', 10000)
303 local function create_dir_whatsit_parbox(h, gc)
304 stop_time_measure('tex_linebreak');
305 -- start 側は ltj-debug.lua に
306 local new_dir = ltjs.list_dir
307 for line in traverse_id(id_hlist, to_direct(h)) do
308 setfield(line, 'head', create_dir_whatsit(getlist(line), gc, new_dir) )
310 ensure_tex_attr(attr_dir, 0)
313 ltjb.add_to_callback('post_linebreak_filter',
314 create_dir_whatsit_parbox, 'ltj.create_dir_whatsit', 10000)
317 local create_dir_whatsit_vbox
320 local id_glue, sid_parskip = node.id('glue'), 3
321 create_dir_whatsit_vbox = function (hd, gc)
322 ltjs.list_dir = get_dir_count()
323 -- remove dir whatsit
324 for x in traverse_id(id_whatsit, hd) do
325 if getsubtype(x)==sid_user and getfield(x, 'user_id')==DIR then
330 ltjs.list_dir =has_attr(hd,attr_dir)
331 local x = node_next(hd)
332 if getid(x)==id_glue and getsubtype(x)==sid_parskip then
333 node_remove(hd,x); node_free(x)
337 hd = node_remove(hd, wh[i]); node_free(wh[i]); wh[i] = nil
339 if gc=='fin_row' then -- gc == 'preamble' case is treated in dir_adjust_vpack
341 set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
342 ensure_tex_attr(attr_icflag, 0)
346 local n =node_next(hd)
348 local w = create_dir_whatsit(hd, gc, ltjs.list_dir)
349 -- move dir whatsit after hd
350 setfield(hd, 'next', w); setfield(w, 'next', n)
353 hd = create_dir_whatsit(hd, gc, ltjs.list_dir)
360 -- dir_node に包む方法を書いたテーブル
363 local floor = math.floor
364 local get_h =function (w,h,d) return h end
365 local get_d =function (w,h,d) return d end
366 local get_h_d =function (w,h,d) return h+d end
367 local get_h_d_neg =function (w,h,d) return -h-d end
368 local get_d_neg =function (w,h,d) return -d end
369 local get_w_half =function (w,h,d) return floor(0.5*w) end
370 local get_w_half_rem =function (w,h,d) return w-floor(0.5*w) end
371 local get_w_neg =function (w,h,d) return -w end
372 local get_w =function (w,h,d) return w end
373 local zero = function() return 0 end
375 [dir_yoko] = { -- yoko を
376 [dir_tate] = { -- tate 中で組む
379 depth = get_w_half_rem,
381 { 'whatsit', sid_save },
382 { 'rotate', '0 1 -1 0' },
383 { 'kern', function(w,h,d,nw,nh,nd) return -nd end },
385 { 'kern', function(w,h,d,nw,nh,nd) return nd-w end },
386 { 'whatsit', sid_restore },
389 { 'whatsit', sid_save },
390 { 'rotate', '0 1 -1 0' },
392 { 'box' , function(w,h,d,nw,nh,nd) return -nh-nd end },
393 { 'kern', get_h_d_neg},
394 { 'whatsit', sid_restore },
397 [dir_dtou] = { -- dtou 中で組む
402 { 'whatsit', sid_save },
403 { 'rotate', '0 -1 1 0' },
404 { 'kern', function(w,h,d,nw,nh,nd) return -nh end },
405 { 'box', get_d_neg },
406 { 'kern', function(w,h,d,nw,nh,nd) return nh-w end },
407 { 'whatsit', sid_restore },
410 { 'whatsit', sid_save },
411 { 'rotate', '0 -1 1 0' },
412 { 'kern', get_h_d_neg },
414 { 'whatsit', sid_restore },
418 [dir_tate] = { -- tate を
419 [dir_yoko] = { -- yoko 中で組む
424 { 'whatsit', sid_save },
425 { 'rotate', '0 -1 1 0' },
426 { 'kern', function (w,h,d,nw,nh,nd) return -nh end },
427 { 'box' , get_d_neg },
428 { 'kern', function (w,h,d,nw,nh,nd) return nh-w end },
429 { 'whatsit', sid_restore },
432 { 'whatsit', sid_save },
433 { 'rotate', '0 -1 1 0' },
434 { 'kern', get_h_d_neg },
436 { 'whatsit', sid_restore },
439 [dir_dtou] = { -- dtou 中で組む
444 { 'whatsit', sid_save },
445 { 'rotate', '-1 0 0 -1' },
446 { 'kern', get_w_neg },
447 { 'box', function (w,h,d,nw,nh,nd) return h-nd end },
448 { 'whatsit', sid_restore },
451 { 'whatsit', sid_save },
452 { 'rotate', '-1 0 0 -1' },
453 { 'kern', get_h_d_neg },
454 { 'box', get_w_neg },
455 { 'whatsit', sid_restore },
459 [dir_dtou] = { -- dtou を
460 [dir_yoko] = { -- yoko 中で組む
465 { 'whatsit', sid_save },
466 { 'rotate', '0 1 -1 0' },
467 { 'kern', function (w,h,d,nw,nh,nd) return -nd end },
469 { 'kern', function (w,h,d,nw,nh,nd) return nd-w end },
470 { 'whatsit', sid_restore },
474 { 'whatsit', sid_save },
475 { 'rotate', '0 1 -1 0' },
476 { 'box', function (w,h,d,nw,nh,nd) return -nd-nh end },
477 { 'kern', get_h_d_neg },
478 { 'whatsit', sid_restore },
481 [dir_tate] = { -- tate 中で組む
486 { 'whatsit', sid_save },
487 { 'rotate', '-1 0 0 -1' },
488 { 'kern', get_w_neg },
489 { 'box', function (w,h,d,nw,nh,nd) return h-nd end },
490 { 'whatsit', sid_restore },
493 { 'whatsit', sid_save },
494 { 'rotate', ' -1 0 0 -1' },
495 { 'kern', function (w,h,d,nw,nh,nd) return -nh-nd end },
496 { 'box', get_w_neg },
497 { 'kern', function (w,h,d,nw,nh,nd) return nh+nd-h-d end },
498 { 'whatsit', sid_restore },
505 -- 1st ret val: b の組方向
506 -- 2nd ret val はその DIR whatsit
507 function get_box_dir(b, default)
508 start_time_measure('get_box_dir')
509 local dir = has_attr(b, attr_dir) or 0
510 local bh = getfield(b,'head')
511 -- b は insert node となりうるので getlist() は使えない
513 if bh~=0 then -- bh != nil
514 for bh in traverse_id(id_whatsit, bh) do
515 if getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
517 dir = (dir==0) and has_attr(bh, attr_dir) or dir
522 -- if bh and getid(bh)==id_whatsit
523 -- and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
525 -- dir = (dir==0) and has_attr(bh, attr_dir) or dir
527 -- bh = node_next(bh)
529 stop_time_measure('get_box_dir')
530 return (dir==0 and default or dir), c
534 local getbox = tex.getbox
536 function luatexja.direction.unbox_check_dir(is_copy)
537 start_time_measure('box_primitive_hook')
538 local list_dir = get_dir_count()%dir_math_mod
539 local b = getbox(tex_getcount('ltj@tempcnta'))
540 if b and getlist(to_direct(b)) then
541 local box_dir = get_box_dir(to_direct(b), dir_yoko)
542 if box_dir%dir_math_mod ~= list_dir then
545 "Incompatible direction list can't be unboxed",
546 'I refuse to unbox a box in differrent direction.')
547 tex.sprint(cat_lp, '\\@gobbletwo')
550 local bd = to_direct(b)
551 local hd = getlist(bd)
554 if getid(hd)==id_whatsit and getsubtype(hd)==sid_user
555 and getfield(hd, 'user_id')==DIR then
557 nh, hd = node_remove(nh, hd)
558 if is_copy and (not dir_backup) then
560 setfield(dir_backup, 'next', nil)
568 setfield(bd, 'head', nh)
571 if luatexja.global_temp and tex.globaldefs~=luatexja.global_temp then
572 tex.globaldefs = luatexja.global_temp
574 stop_time_measure('box_primitive_hook')
576 function luatexja.direction.uncopy_restore_whatsit()
577 local b = getbox(tex_getcount('ltj@tempcnta'))
579 local bd = to_direct(b)
581 setfield(dir_backup, 'next', getlist(bd))
582 setfield(bd, 'head', dir_backup)
589 -- dir_node に包まれている「本来の中身」を取り出し,
591 local function unwrap_dir_node(b, head, box_dir)
592 -- b: dir_node, head: the head of list, box_dir:
593 -- return values are (new head), (next of b), (contents), (dir of contents)
594 local bh = getlist(b)
597 nh = insert_before(head, b, bh)
598 nh, nb = node_remove(nh, b)
599 setfield(b, 'next', nil)
602 local shift_old, b_dir, wh = nil, get_box_dir(bh, 0)
604 node.direct.flush_list(getfield(wh, 'value'))
605 setfield(wh, 'value', nil)
607 return nh, nb, bh, b_dir
610 -- is_manual: 寸法変更に伴うものか?
611 local function create_dir_node(b, b_dir, new_dir, is_manual)
612 local info = dir_node_aux[b_dir%dir_math_mod][new_dir%dir_math_mod]
613 local w = getfield(b, 'width')
614 local h = getfield(b, 'height')
615 local d = getfield(b, 'depth')
616 local db = node_new(getid(b)) -- dir_node
617 set_attr(db, attr_dir,
618 new_dir + (is_manual and dir_node_manual or dir_node_auto))
619 set_attr(db, attr_icflag, PROCESSED)
620 set_attr(b, attr_icflag, PROCESSED)
621 ensure_tex_attr(attr_dir, 0)
622 ensure_tex_attr(attr_icflag, 0)
623 setfield(db, 'dir', getfield(b, 'dir'))
624 setfield(db, 'shift', 0)
625 setfield(db, 'width', info.width(w,h,d))
626 setfield(db, 'height', info.height(w,h,d))
627 setfield(db, 'depth', info.depth(w,h,d))
632 local make_dir_whatsit, process_dir_node
634 make_dir_whatsit = function (head, b, new_dir, origin)
635 new_dir = new_dir%dir_math_mod
636 -- head: list head, b: box
637 -- origin: コール元 (for debug)
638 -- return value: (new head), (next of b), (new b), (is_b_dir_node)
639 -- (new b): b か dir_node に被せられた b
640 local bh = getlist(b)
641 local box_dir, dn = get_box_dir(b, ltjs.list_dir)
642 -- 既に b の中身にあるwhatsit
643 if (box_dir<dir_node_auto) and (not dn) then
644 bh = create_dir_whatsit(bh, 'make_dir_whatsit', dir_yoko)
645 dn = bh; setfield(b, 'head', bh)
647 if box_dir%dir_math_mod==new_dir then
648 if box_dir>=dir_node_auto then
649 -- dir_node としてカプセル化されている
650 local _, dnc = get_box_dir(b, 0)
651 if dnc then -- free all other dir_node
652 node.direct.flush_list(getfield(dnc, 'value'))
653 setfield(dnc, 'value', nil)
655 set_attr(b, attr_dir, box_dir%dir_math_mod + dir_node_auto)
656 return head, node_next(b), b, true
658 -- 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
659 return head, node_next(b), b, false
663 local nh, nb, ret, flag
664 if box_dir>= dir_node_auto then -- unwrap
666 head, nb, b, b_dir = unwrap_dir_node(b, head, box_dir)
668 if b_dir%dir_math_mod==new_dir then
669 -- dir_node の中身が周囲の組方向とあっている
670 return head, nb, b, false
671 else box_dir = b_dir end
673 box_dir = box_dir%dir_math_mod
675 local dnh = getfield(dn, 'value')
676 for x in traverse(dnh) do
677 if has_attr(x, attr_dir)%dir_math_mod == new_dir then
678 setfield(dn, 'value', to_node(node_remove(dnh, x)))
682 node.direct.flush_list(getfield(dn, 'value'))
683 setfield(dn, 'value', nil)
684 db = db or create_dir_node(b, box_dir, new_dir, false)
685 local w = getfield(b, 'width')
686 local h = getfield(b, 'height')
687 local d = getfield(b, 'depth')
688 local dn_w = getfield(db, 'width')
689 local dn_h = getfield(db, 'height')
690 local dn_d = getfield(db, 'depth')
691 nh, nb = insert_before(head, b, db), nil
692 nh, nb = node_remove(nh, b)
693 setfield(b, 'next', nil); setfield(db, 'head', b)
695 return nh, nb, ret, flag
698 process_dir_node = function (hd, gc)
699 local x, new_dir = hd, ltjs.list_dir or dir_yoko
702 if (xid==id_hlist and get_attr_icflag(x)~=PACKED)
703 or xid==id_vlist then
704 hd, x = make_dir_whatsit(hd, x, new_dir, 'process_dir_node:' .. gc)
713 local node_prev = (node.direct~=node) and node.direct.getprev or node.prev
714 local id_glue = node.id('glue')
715 local function lastbox_hook()
716 start_time_measure('box_primitive_hook')
717 local bn = tex_nest[tex_nest.ptr].tail
719 local b, head = to_direct(bn), to_direct(tex_nest[tex_nest.ptr].head)
721 if bid==id_hlist or bid==id_vlist then
723 -- alignment の各行の中身が入ったボックス
724 if p and getid(p)==id_glue and getsubtype(p)==12 then -- tabskip
725 local np = node_next(p); local npid = getid(np)
726 if npid==id_hlist or npid==id_vlist then
727 setfield(b, 'head', create_dir_whatsit(p, 'align', get_box_dir(np, 0)))
730 local box_dir = get_box_dir(b, 0)
731 if box_dir>= dir_node_auto then -- unwrap dir_node
732 local p = node_prev(b)
733 local dummy1, dummy2, nb = unwrap_dir_node(b, nil, box_dir)
734 setfield(p, 'next', nb); tex_nest[tex_nest.ptr].tail = to_node(nb)
735 setfield(b, 'next', nil); setfield(b, 'head', nil)
738 local _, wh = get_box_dir(b, 0) -- clean dir_node attached to the box
740 node.direct.flush_list(getfield('value', wh))
741 setfield(wh, 'value', nil)
745 stop_time_measure('box_primitive_hook')
748 luatexja.direction.make_dir_whatsit = make_dir_whatsit
749 luatexja.direction.lastbox_hook = lastbox_hook
752 -- \wd, \ht, \dp の代わり
754 local getbox, setdimen = tex.getbox, tex.setdimen
755 local function get_box_dim_common(key, s, l_dir)
757 local s_dir, wh = get_box_dir(s, dir_yoko)
758 s_dir = s_dir%dir_math_mod
759 if s_dir ~= l_dir then
760 local not_found = true
761 for x in traverse(getfield(wh, 'value')) do
762 if l_dir == has_attr(x, attr_dir)%dir_node_auto then
763 setdimen('ltj@tempdima', getfield(x, key))
764 not_found = false; break
768 local w = getfield(s, 'width')
769 local h = getfield(s, 'height')
770 local d = getfield(s, 'depth')
771 setdimen('ltj@tempdima',
772 dir_node_aux[s_dir][l_dir][key](w,h,d))
775 setdimen('ltj@tempdima', getfield(s, key))
778 local function get_box_dim(key, n)
779 local gt = tex.globaldefs; tex.globaldefs = 0
782 local l_dir = (get_dir_count())%dir_math_mod
784 local b_dir = get_box_dir(s,dir_yoko)
785 if b_dir<dir_node_auto then
786 get_box_dim_common(key, s, l_dir)
787 elseif b_dir%dir_math_mod==l_dir then
788 setdimen('ltj@tempdima', getfield(s, key))
790 get_box_dim_common(key, getlist(s), l_dir)
793 setdimen('ltj@tempdima', 0)
795 tex.sprint(cat_lp, '\\ltj@tempdima')
798 luatexja.direction.get_box_dim = get_box_dim
800 -- return value: (changed dimen of box itself?)
801 local scan_dimen, scan_int = token.scan_dimen, token.scan_int
802 local scan_keyword = token.scan_keyword
803 local function set_box_dim_common(key, s, l_dir)
804 local s_dir, wh = get_box_dir(s, dir_yoko)
805 s_dir = s_dir%dir_math_mod
806 if s_dir ~= l_dir then
808 wh = create_dir_whatsit(getlist(s), 'set_box_dim', s_dir)
809 setfield(s, 'head', wh)
812 local dnh = getfield(wh, 'value')
813 for x in traverse(dnh) do
814 if has_attr(x, attr_dir)%dir_node_auto==l_dir then
819 db = create_dir_node(s, s_dir, l_dir, true)
820 setfield(db, 'next', dnh)
821 setfield(wh, 'value',to_node(db))
823 setfield(db, key, scan_dimen())
826 setfield(s, key, scan_dimen())
828 -- change dimension of dir_nodes which are created "automatically"
830 = getfield(s,'width'), getfield(s, 'height'), getfield(s, 'depth')
831 for x in traverse(getfield(wh, 'value')) do
832 local x_dir = has_attr(x, attr_dir)
833 if x_dir<dir_node_manual then
834 local info = dir_node_aux[s_dir][x_dir%dir_node_auto]
835 setfield(x, 'width', info.width(bw,bh,bd))
836 setfield(x, 'height', info.height(bw,bh,bd))
837 setfield(x, 'depth', info.depth(bw,bh,bd))
844 local function set_box_dim(key)
845 local s = getbox(scan_int()); scan_keyword('=')
847 local l_dir = (get_dir_count())%dir_math_mod
849 local b_dir = get_box_dir(s,dir_yoko)
850 if b_dir<dir_node_auto then
851 set_box_dim_common(key, s, l_dir)
852 elseif b_dir%dir_math_mod == l_dir then
854 setfield(s, key, scan_dimen())
855 if b_dir<dir_node_manual then
856 set_attr(s, attr_dir, b_dir%dir_node_auto + dir_node_manual)
859 local sid, b = getid(s), getlist(s)
860 local info = dir_node_aux[get_box_dir(b,dir_yoko)%dir_math_mod][b_dir%dir_node_auto]
862 = getfield(b,'width'), getfield(b, 'height'), getfield(b, 'depth')
864 = getfield(s,'width'), getfield(s, 'height'), getfield(s, 'depth')
865 if set_box_dim_common(key, b, l_dir) and b_dir<dir_node_manual then
866 -- re-calculate dimension of s, if s is created "automatically"
867 if b_dir<dir_node_manual then
868 setfield(s, 'width', info.width(bw,bh,bd))
869 setfield(s, 'height', info.height(bw,bh,bd))
870 setfield(s, 'depth', info.depth(bw,bh,bd))
876 luatexja.direction.set_box_dim = set_box_dim
880 local getbox = tex.getbox
881 local function get_register_dir(n)
885 local b_dir = get_box_dir(s, dir_yoko)
886 if b_dir<dir_node_auto then
889 local b_dir = get_box_dir(
890 node_next(node_next(node_next(getlist(s)))), dir_yoko)
897 luatexja.direction.get_register_dir = get_register_dir
901 local getbox, setbox, copy_list = tex.getbox, tex.setbox, node.direct.copy_list
903 function luatexja.direction.raise_box()
904 start_time_measure('box_primitive_hook')
905 local list_dir = get_dir_count()
906 local s = getbox('ltj@afbox')
908 local sd = to_direct(s)
909 local box_dir = get_box_dir(sd, dir_yoko)
910 if box_dir%dir_math_mod ~= list_dir then
913 to_node(copy_list(make_dir_whatsit(sd, sd, list_dir, 'box_move')))
914 -- copy_list しないとリストの整合性が崩れる……?
918 stop_time_measure('box_primitive_hook')
922 -- PACKED の hbox から文字を取り出す
923 -- luatexja.jfmglue.check_box などで使用
925 local function glyph_from_packed(h)
927 return (getid(b)==id_kern or (getid(b)==id_whatsit and getsubtype(b)==sid_save) )
928 and node_next(node_next(node_next(b))) or b
930 luatexja.direction.glyph_from_packed = glyph_from_packed
935 local id_adjust = node.id('adjust')
936 function luatexja.direction.check_adjust_direction()
937 start_time_measure('box_primitive_hook')
938 local list_dir = get_adjust_dir_count()
939 local a = tex_nest[tex_nest.ptr].tail
940 local ad = to_direct(a)
941 if a and getid(ad)==id_adjust then
942 local adj_dir = get_box_dir(ad)
943 if list_dir~=adj_dir then
946 'Direction Incompatible',
947 "\\vadjust's argument and outer vlist must have same direction.")
948 node.direct.last_node()
951 stop_time_measure('box_primitive_hook')
957 local id_ins = node.id('ins')
958 local id_rule = node.id('rule')
959 function luatexja.direction.populate_insertion_dir_whatsit()
960 start_time_measure('box_primitive_hook')
961 local list_dir = get_dir_count()
962 local a = tex_nest[tex_nest.ptr].tail
963 local ad = to_direct(a)
964 if (not a) or getid(ad)~=id_ins then
965 a = node.tail(tex.lists.page_head); ad = to_direct(a)
967 if a and getid(ad)==id_ins then
968 local h = getfield(ad, 'head')
969 if getid(h)==id_whatsit and
970 getsubtype(h)==sid_user and getfield(h, 'user_id')==DIR then
971 local n = h; h = node_remove(h,h)
974 for box_rule in traverse(h) do
975 if getid(box_rule)<id_rule then
976 h = insert_before(h, box_rule, dir_pool[list_dir]())
979 ensure_tex_attr(attr_dir, 0)
980 setfield(ad, 'head', h)
982 stop_time_measure('box_primitive_hook')
988 local split_dir_whatsit, split_dir_head
989 local cat_lp = luatexbase.catcodetables['latex-package']
990 local sprint, scan_int, tex_getbox = tex.sprint, token.scan_int, tex.getbox
991 function luatexja.direction.vsplit()
992 local n = scan_int();
993 local p = to_direct(tex_getbox(n))
996 local bh = getlist(p)
997 if getid(bh)==id_whatsit and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR
998 and node_next(bh) then
999 ltjs.list_dir = has_attr(bh, attr_dir)
1000 local q = node_next(p)
1001 setfield(p, 'head', node_remove(bh,bh,bh))
1005 sprint(cat_lp, '\\ltj@@orig@vsplit' .. tostring(n))
1007 local function dir_adjust_vpack(h, gc)
1008 start_time_measure('direction_vpack')
1009 local hd = to_direct(h)
1010 if gc=='split_keep' then
1011 -- supply dir_whatsit
1012 hd = create_dir_whatsit_vbox(hd, gc)
1013 split_dir_whatsit = hd
1014 elseif gc=='split_off' then
1015 if split_dir_head then
1016 list_dir = has_attr(split_dir_head, attr_dir)
1017 hd = insert_before(hd, hd, split_dir_head)
1020 if split_dir_whatsit then
1021 -- adjust direction of 'split_keep'
1022 set_attr(split_dir_whatsit, attr_dir, ltjs.list_dir)
1024 split_dir_whatsit=nil
1025 elseif gc=='preamble' then
1026 split_dir_whatsit=nil
1029 -- hd = process_dir_node(create_dir_whatsit_vbox(hd, gc), gc)
1030 -- done in append_to_vpack callback
1031 hd = create_dir_whatsit_vbox(hd, gc)
1032 split_dir_whatsit=nil
1034 stop_time_measure('direction_vpack')
1037 ltjb.add_to_callback('vpack_filter',
1039 'ltj.direction', 10000)
1043 -- supply direction whatsit to the main vertical list "of the next page"
1044 local function dir_adjust_pre_output(h, gc)
1045 return to_node(create_dir_whatsit_vbox(to_direct(h), gc))
1047 ltjb.add_to_callback('pre_output_filter',
1048 dir_adjust_pre_output,
1049 'ltj.direction', 10000)
1051 function luatexja.direction.remove_end_whatsit()
1052 local h=tex.lists.page_head
1053 if h and (not h.next) and
1054 h.id==id_whatsit and h.subtype==sid_user and
1055 h.user_id == DIR then
1056 tex.lists.page_head = nil
1062 -- append_to_vlist filter
1064 local id_glue = node.id('glue')
1065 local getglue = node.direct.getglue or
1067 return getfield(g,'width'), getfield(g,'stretch'), getfield(g,'shrink'),
1068 getfield(g,'stretch_order'), getfield(g,'shrink_order')
1070 local setglue = luatexja.setglue
1071 local function copy_glue (new_glue, old_glue, subtype, new_w)
1072 setfield(new_glue, 'subtype', subtype)
1073 local w,st,sp,sto,spo = getglue(to_direct(old_glue))
1074 setglue(new_glue, new_w or w, st, sp, sto, spo)
1076 local node_write = node.direct.write
1077 local function dir_adjust_append_vlist(b, loc, prev, mirrored)
1078 local old_b = to_direct(b)
1079 local new_b = loc=='box' and
1080 make_dir_whatsit(old_b, old_b, get_dir_count(), 'append_vlist') or old_b
1082 if prev > -65536000 then
1083 local d = tex.baselineskip.width - prev
1084 - getfield(new_b, mirrored and 'depth' or 'height')
1085 local g = node_new(id_glue)
1086 if d < tex.lineskiplimit then
1087 copy_glue(g, tex.lineskip, 1)
1089 copy_glue(g, tex.baselineskip, 2, d);
1094 tex.prevdepth = getfield(new_b, mirrored and 'height' or 'depth')
1095 return nil -- do nothing on tex side
1097 ltjb.add_to_callback('append_to_vlist_filter',
1098 dir_adjust_append_vlist,
1099 'ltj.direction', 10000)
1102 -- finalize (executed just before \shipout)
1103 -- we supply correct pdfsavematrix nodes etc. inside dir_node
1105 local finalize_inner
1106 local function finalize_dir_node(db,new_dir)
1107 local b = getlist(db)
1108 if getid(b)==id_whatsit and getsubtype(b)==sid_user
1109 and getfield(b, 'user_id')==DIR then
1110 local ob = b; b = node_remove(b,b); setfield(db, 'head', b);
1114 local w = getfield(b, 'width')
1115 local h = getfield(b, 'height')
1116 local d = getfield(b, 'depth')
1117 local dn_w = getfield(db, 'width')
1118 local dn_h = getfield(db, 'height')
1119 local dn_d = getfield(db, 'depth')
1120 local db_head, db_tail
1121 local t = dir_node_aux[get_box_dir(b, dir_yoko)%dir_math_mod][new_dir]
1122 t = t and t[getid(b)]; if not t then return end
1123 for _,v in ipairs(t) do
1124 local cmd, arg, nn = v[1], v[2]
1126 nn = node_new(id_kern, 1)
1127 setfield(nn, 'kern', arg(w, h, d, dn_w, dn_h, dn_d))
1128 elseif cmd=='whatsit' then
1129 nn = node_new(id_whatsit, arg)
1130 elseif cmd=='rotate' then
1131 nn = node_new(id_whatsit, sid_matrix)
1132 setfield(nn, 'data', arg)
1133 elseif cmd=='box' then
1134 nn = b; setfield(b, 'next', nil)
1135 setfield(nn, 'shift', arg(w, h, d, dn_w, dn_h, dn_d))
1138 insert_after(db_head, db_tail, nn)
1141 setfield(db, 'head', nn)
1142 db_head, db_tail = nn, nn
1147 tex.setattribute(attr_dir, dir_yoko)
1148 local shipout_temp = node_new(id_hlist)
1149 tex.setattribute(attr_dir, 0)
1151 finalize_inner = function (box)
1152 for n in traverse(getlist(box)) do
1153 local nid = getid(n)
1154 if (nid==id_hlist or nid==id_vlist) then
1155 local ndir = get_box_dir(n, dir_yoko)
1156 if ndir>=dir_node_auto then -- n is dir_node
1157 finalize_dir_node(n, ndir%dir_math_mod)
1164 local getbox = tex.getbox
1165 local setbox, copy = node.direct.setbox, node.direct.copy
1166 local lua_mem_kb = 0
1167 function luatexja.direction.finalize()
1168 local a = to_direct(tex.getbox("AtBeginShipoutBox"))
1169 local a_dir = get_box_dir(a, dir_yoko)
1170 if a_dir~=dir_yoko then
1171 local b = create_dir_node(a, a_dir, dir_yoko, false)
1172 setfield(b, 'head', a); a = b
1174 setfield(shipout_temp, 'head', a)
1175 finalize_inner(shipout_temp)
1176 setbox('global', "AtBeginShipoutBox", copy(getlist(shipout_temp)))
1177 setfield(shipout_temp, 'head',nil)
1179 --local m = collectgarbage('count')
1180 --if m>lua_mem_kb+20480 then
1181 -- collectgarbage(); lua_mem_kb = collectgarbage('count')
1183 --print('Lua Memory Usage', lua_mem_kb)