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 if tex.currentgrouptype==6 then
206 "You can't use `\\" .. name .. "' in an align",
207 "To change direction in an align, \n"
208 .. "you shold use \\hbox or \\vbox.")
210 local h = (lv==0) and tex.lists.page_head or tex_nest[lv].head.next
211 local flag,w = test_list(h,lv)
213 if lv==0 and not page_direction then
214 page_direction = v -- for first call of \yoko (in luatexja-core.sty)
218 "Use `\\" .. tostring(name) .. "' at top of list",
219 'Direction change command by LuaTeX-ja is available\n'
220 .. 'only when the current list is null.')
223 node_set_attr(w, attr_dir, v)
224 if lv==0 then page_direction = v end
227 else -- flag == 2: need to create dir whatsit.
228 local h = tex_nest[lv].head
229 local hn = node.next(h)
230 hn = (hn and hn.id==id_local) and hn or h
231 local w = to_node(dir_pool[v]())
232 insert_after_node(h,hn,w)
233 tex_nest[lv].tail = node_tail_node(w)
235 ensure_tex_attr(attr_icflag, 0)
237 ensure_tex_attr(attr_dir, 0)
239 luatexja.direction.set_list_direction = set_list_direction
242 -- ボックスに dir whatsit を追加
243 local function create_dir_whatsit(hd, gc, new_dir)
244 if getid(hd)==id_whatsit and
245 getsubtype(hd)==sid_user and getfield(hd, 'user_id')==DIR then
246 set_attr(hd, attr_icflag,
247 get_attr_icflag(hd) + PROCESSED_BEGIN_FLAG)
248 local n =node_next(hd)
250 set_attr(n, attr_icflag,
251 get_attr_icflag(n) + PROCESSED_BEGIN_FLAG)
253 ensure_tex_attr(attr_icflag, 0)
256 local w = dir_pool[new_dir]()
257 setfield(w, 'next', hd)
258 set_attr(w, attr_icflag, PROCESSED_BEGIN_FLAG)
259 set_attr(hd, attr_icflag,
260 get_attr_icflag(hd) + PROCESSED_BEGIN_FLAG)
261 ensure_tex_attr(attr_icflag, 0)
262 ensure_tex_attr(attr_dir, 0)
267 -- hpack_filter, vpack_filter, post_line_break_filter
268 -- の結果を組方向を明示するため,先頭に dir_node を設置
271 local function create_dir_whatsit_hpack(h, gc)
272 local hd = to_direct(h)
273 if gc=='fin_row' then
275 for p in traverse_id(15, hd) do -- unset
276 if get_box_dir(p, 0)==0 then
277 setfield(p, 'head', create_dir_whatsit(getlist(p), 'fin_row', ltjs.list_dir))
280 set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
281 ensure_tex_attr(attr_icflag, 0)
284 elseif gc == 'preamble' then
287 return to_node(create_dir_whatsit(hd, gc, ltjs.list_dir))
291 ltjb.add_to_callback('hpack_filter',
292 create_dir_whatsit_hpack, 'ltj.create_dir_whatsit', 10000)
296 local function create_dir_whatsit_parbox(h, gc)
297 stop_time_measure('tex_linebreak');
298 -- start 側は ltj-debug.lua に
299 local new_dir = ltjs.list_dir
300 for line in traverse_id(id_hlist, to_direct(h)) do
301 setfield(line, 'head', create_dir_whatsit(getlist(line), gc, new_dir) )
303 ensure_tex_attr(attr_dir, 0)
306 ltjb.add_to_callback('post_linebreak_filter',
307 create_dir_whatsit_parbox, 'ltj.create_dir_whatsit', 10000)
310 local create_dir_whatsit_vbox
313 local id_glue, sid_parskip = node.id('glue'), 3
314 create_dir_whatsit_vbox = function (hd, gc)
315 ltjs.list_dir = get_dir_count()
316 -- remove dir whatsit
317 for x in traverse_id(id_whatsit, hd) do
318 if getsubtype(x)==sid_user and getfield(x, 'user_id')==DIR then
323 ltjs.list_dir =has_attr(hd,attr_dir)
324 local x = node_next(hd)
325 if getid(x)==id_glue and getsubtype(x)==sid_parskip then
326 node_remove(hd,x); node_free(x)
330 hd = node_remove(hd, wh[i]); node_free(wh[i]); wh[i] = nil
332 if gc=='fin_row' then -- gc == 'preamble' case is treated in dir_adjust_vpack
334 set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
335 ensure_tex_attr(attr_icflag, 0)
339 local n =node_next(hd)
341 local w = create_dir_whatsit(hd, gc, ltjs.list_dir)
342 -- move dir whatsit after hd
343 setfield(hd, 'next', w); setfield(w, 'next', n)
346 hd = create_dir_whatsit(hd, gc, ltjs.list_dir)
353 -- dir_node に包む方法を書いたテーブル
356 local floor = math.floor
357 local get_h =function (w,h,d) return h end
358 local get_d =function (w,h,d) return d end
359 local get_h_d =function (w,h,d) return h+d end
360 local get_h_d_neg =function (w,h,d) return -h-d end
361 local get_d_neg =function (w,h,d) return -d end
362 local get_w_half =function (w,h,d) return floor(0.5*w) end
363 local get_w_half_rem =function (w,h,d) return w-floor(0.5*w) end
364 local get_w_neg =function (w,h,d) return -w end
365 local get_w =function (w,h,d) return w end
366 local zero = function() return 0 end
368 [dir_yoko] = { -- yoko を
369 [dir_tate] = { -- tate 中で組む
372 depth = get_w_half_rem,
374 { 'whatsit', sid_save },
375 { 'rotate', '0 1 -1 0' },
376 { 'kern', function(w,h,d,nw,nh,nd) return -nd end },
378 { 'kern', function(w,h,d,nw,nh,nd) return nd-w end },
379 { 'whatsit', sid_restore },
382 { 'whatsit', sid_save },
383 { 'rotate', '0 1 -1 0' },
385 { 'box' , function(w,h,d,nw,nh,nd) return -nh-nd end },
386 { 'kern', get_h_d_neg},
387 { 'whatsit', sid_restore },
390 [dir_dtou] = { -- dtou 中で組む
395 { 'whatsit', sid_save },
396 { 'rotate', '0 -1 1 0' },
397 { 'kern', function(w,h,d,nw,nh,nd) return -nh end },
398 { 'box', get_d_neg },
399 { 'kern', function(w,h,d,nw,nh,nd) return nh-w end },
400 { 'whatsit', sid_restore },
403 { 'whatsit', sid_save },
404 { 'rotate', '0 -1 1 0' },
405 { 'kern', get_h_d_neg },
407 { 'whatsit', sid_restore },
411 [dir_tate] = { -- tate を
412 [dir_yoko] = { -- yoko 中で組む
417 { 'whatsit', sid_save },
418 { 'rotate', '0 -1 1 0' },
419 { 'kern', function (w,h,d,nw,nh,nd) return -nh end },
420 { 'box' , get_d_neg },
421 { 'kern', function (w,h,d,nw,nh,nd) return nh-w end },
422 { 'whatsit', sid_restore },
425 { 'whatsit', sid_save },
426 { 'rotate', '0 -1 1 0' },
427 { 'kern', get_h_d_neg },
429 { 'whatsit', sid_restore },
432 [dir_dtou] = { -- dtou 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', get_h_d_neg },
447 { 'box', get_w_neg },
448 { 'whatsit', sid_restore },
452 [dir_dtou] = { -- dtou を
453 [dir_yoko] = { -- yoko 中で組む
458 { 'whatsit', sid_save },
459 { 'rotate', '0 1 -1 0' },
460 { 'kern', function (w,h,d,nw,nh,nd) return -nd end },
462 { 'kern', function (w,h,d,nw,nh,nd) return nd-w end },
463 { 'whatsit', sid_restore },
467 { 'whatsit', sid_save },
468 { 'rotate', '0 1 -1 0' },
469 { 'box', function (w,h,d,nw,nh,nd) return -nd-nh end },
470 { 'kern', get_h_d_neg },
471 { 'whatsit', sid_restore },
474 [dir_tate] = { -- tate 中で組む
479 { 'whatsit', sid_save },
480 { 'rotate', '-1 0 0 -1' },
481 { 'kern', get_w_neg },
482 { 'box', function (w,h,d,nw,nh,nd) return h-nd end },
483 { 'whatsit', sid_restore },
486 { 'whatsit', sid_save },
487 { 'rotate', ' -1 0 0 -1' },
488 { 'kern', function (w,h,d,nw,nh,nd) return -nh-nd end },
489 { 'box', get_w_neg },
490 { 'kern', function (w,h,d,nw,nh,nd) return nh+nd-h-d end },
491 { 'whatsit', sid_restore },
498 -- 1st ret val: b の組方向
499 -- 2nd ret val はその DIR whatsit
500 function get_box_dir(b, default)
501 start_time_measure('get_box_dir')
502 local dir = has_attr(b, attr_dir) or 0
503 local bh = getfield(b,'head')
504 -- b は insert node となりうるので getlist() は使えない
506 if bh~=0 then -- bh != nil
507 for bh in traverse_id(id_whatsit, bh) do
508 if getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
510 dir = (dir==0) and has_attr(bh, attr_dir) or dir
515 -- if bh and getid(bh)==id_whatsit
516 -- and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
518 -- dir = (dir==0) and has_attr(bh, attr_dir) or dir
520 -- bh = node_next(bh)
522 stop_time_measure('get_box_dir')
523 return (dir==0 and default or dir), c
527 local getbox = tex.getbox
529 function luatexja.direction.unbox_check_dir(is_copy)
530 start_time_measure('box_primitive_hook')
531 local list_dir = get_dir_count()%dir_math_mod
532 local b = getbox(tex_getcount('ltj@tempcnta'))
534 local box_dir = get_box_dir(to_direct(b), dir_yoko)
535 if box_dir%dir_math_mod ~= list_dir then
538 "Incompatible direction list can't be unboxed",
539 'I refuse to unbox a box in differrent direction.')
540 tex.sprint(cat_lp, '\\@gobbletwo')
543 local bd = to_direct(b)
544 local hd = getlist(bd)
547 if getid(hd)==id_whatsit and getsubtype(hd)==sid_user
548 and getfield(hd, 'user_id')==DIR then
550 nh, hd = node_remove(nh, hd)
551 if is_copy and (not dir_backup) then
553 setfield(dir_backup, 'next', nil)
561 setfield(bd, 'head', nh)
564 if luatexja.global_temp and tex.globaldefs~=luatexja.global_temp then
565 tex.globaldefs = luatexja.global_temp
567 stop_time_measure('box_primitive_hook')
569 function luatexja.direction.uncopy_restore_whatsit()
570 local b = getbox(tex_getcount('ltj@tempcnta'))
572 local bd = to_direct(b)
574 setfield(dir_backup, 'next', getlist(bd))
575 setfield(bd, 'head', dir_backup)
582 -- dir_node に包まれている「本来の中身」を取り出し,
584 local function unwrap_dir_node(b, head, box_dir)
585 -- b: dir_node, head: the head of list, box_dir:
586 -- return values are (new head), (next of b), (contents), (dir of contents)
587 local bh = getlist(b)
590 nh = insert_before(head, b, bh)
591 nh, nb = node_remove(nh, b)
592 setfield(b, 'next', nil)
595 local shift_old, b_dir, wh = nil, get_box_dir(bh, 0)
597 node.direct.flush_list(getfield(wh, 'value'))
598 setfield(wh, 'value', nil)
600 return nh, nb, bh, b_dir
603 -- is_manual: 寸法変更に伴うものか?
604 local function create_dir_node(b, b_dir, new_dir, is_manual)
605 local info = dir_node_aux[b_dir%dir_math_mod][new_dir%dir_math_mod]
606 local w = getfield(b, 'width')
607 local h = getfield(b, 'height')
608 local d = getfield(b, 'depth')
609 local db = node_new(getid(b)) -- dir_node
610 set_attr(db, attr_dir,
611 new_dir + (is_manual and dir_node_manual or dir_node_auto))
612 set_attr(db, attr_icflag, PROCESSED)
613 set_attr(b, attr_icflag, PROCESSED)
614 ensure_tex_attr(attr_dir, 0)
615 ensure_tex_attr(attr_icflag, 0)
616 setfield(db, 'dir', getfield(b, 'dir'))
617 setfield(db, 'shift', 0)
618 setfield(db, 'width', info.width(w,h,d))
619 setfield(db, 'height', info.height(w,h,d))
620 setfield(db, 'depth', info.depth(w,h,d))
625 local make_dir_whatsit, process_dir_node
627 make_dir_whatsit = function (head, b, new_dir, origin)
628 new_dir = new_dir%dir_math_mod
629 -- head: list head, b: box
630 -- origin: コール元 (for debug)
631 -- return value: (new head), (next of b), (new b), (is_b_dir_node)
632 -- (new b): b か dir_node に被せられた b
633 local bh = getlist(b)
634 local box_dir, dn = get_box_dir(b, ltjs.list_dir)
635 -- 既に b の中身にあるwhatsit
637 if box_dir%dir_math_mod==new_dir then
638 if box_dir>=dir_node_auto then
639 -- dir_node としてカプセル化されている
640 local _, dnc = get_box_dir(b, 0)
641 if dnc then -- free all other dir_node
642 node.direct.flush_list(getfield(dnc, 'value'))
643 setfield(dnc, 'value', nil)
645 set_attr(b, attr_dir, box_dir%dir_math_mod + dir_node_auto)
646 return head, node_next(b), b, true
648 -- 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
649 return head, node_next(b), b, false
653 local nh, nb, ret, flag
654 if box_dir>= dir_node_auto then -- unwrap
656 head, nb, b, b_dir = unwrap_dir_node(b, head, box_dir)
658 if b_dir%dir_math_mod==new_dir then
659 -- dir_node の中身が周囲の組方向とあっている
660 return head, nb, b, false
661 else box_dir = b_dir end
663 box_dir = box_dir%dir_math_mod
665 local dnh = getfield(dn, 'value')
666 for x in traverse(dnh) do
667 if has_attr(x, attr_dir)%dir_math_mod == new_dir then
668 setfield(dn, 'value', to_node(node_remove(dnh, x)))
672 node.direct.flush_list(getfield(dn, 'value'))
673 setfield(dn, 'value', nil)
674 db = db or create_dir_node(b, box_dir, new_dir, false)
675 local w = getfield(b, 'width')
676 local h = getfield(b, 'height')
677 local d = getfield(b, 'depth')
678 local dn_w = getfield(db, 'width')
679 local dn_h = getfield(db, 'height')
680 local dn_d = getfield(db, 'depth')
681 nh, nb = insert_before(head, b, db), nil
682 nh, nb = node_remove(nh, b)
683 setfield(b, 'next', nil); setfield(db, 'head', b)
685 return nh, nb, ret, flag
688 process_dir_node = function (hd, gc)
689 local x, new_dir = hd, ltjs.list_dir or dir_yoko
692 if (xid==id_hlist and get_attr_icflag(x)~=PACKED)
693 or xid==id_vlist then
694 hd, x = make_dir_whatsit(hd, x, new_dir, 'process_dir_node:' .. gc)
703 local node_prev = (node.direct~=node) and node.direct.getprev or node.prev
704 local id_glue = node.id('glue')
705 local function lastbox_hook()
706 start_time_measure('box_primitive_hook')
707 local bn = tex_nest[tex_nest.ptr].tail
709 local b, head = to_direct(bn), to_direct(tex_nest[tex_nest.ptr].head)
711 if bid==id_hlist or bid==id_vlist then
713 -- alignment の各行の中身が入ったボックス
714 if p and getid(p)==id_glue and getsubtype(p)==12 then -- tabskip
715 local np = node_next(p); local npid = getid(np)
716 if npid==id_hlist or npid==id_vlist then
717 setfield(b, 'head', create_dir_whatsit(p, 'align', get_box_dir(np, 0)))
720 local box_dir = get_box_dir(b, 0)
721 if box_dir>= dir_node_auto then -- unwrap dir_node
722 local p = node_prev(b)
723 local dummy1, dummy2, nb = unwrap_dir_node(b, nil, box_dir)
724 setfield(p, 'next', nb); tex_nest[tex_nest.ptr].tail = to_node(nb)
725 setfield(b, 'next', nil); setfield(b, 'head', nil)
728 local _, wh = get_box_dir(b, 0) -- clean dir_node attached to the box
730 node.direct.flush_list(getfield('value', wh))
731 setfield(wh, 'value', nil)
735 stop_time_measure('box_primitive_hook')
738 luatexja.direction.make_dir_whatsit = make_dir_whatsit
739 luatexja.direction.lastbox_hook = lastbox_hook
742 -- \wd, \ht, \dp の代わり
744 local getbox, setdimen = tex.getbox, tex.setdimen
745 local function get_box_dim_common(key, s, l_dir)
747 local s_dir, wh = get_box_dir(s, dir_yoko)
748 s_dir = s_dir%dir_math_mod
749 if s_dir ~= l_dir then
750 local not_found = true
751 for x in traverse(getfield(wh, 'value')) do
752 if l_dir == has_attr(x, attr_dir)%dir_node_auto then
753 setdimen('ltj@tempdima', getfield(x, key))
754 not_found = false; break
758 local w = getfield(s, 'width')
759 local h = getfield(s, 'height')
760 local d = getfield(s, 'depth')
761 setdimen('ltj@tempdima',
762 dir_node_aux[s_dir][l_dir][key](w,h,d))
765 setdimen('ltj@tempdima', getfield(s, key))
768 local function get_box_dim(key, n)
769 local gt = tex.globaldefs; tex.globaldefs = 0
772 local l_dir = (get_dir_count())%dir_math_mod
774 local b_dir = get_box_dir(s,dir_yoko)
775 if b_dir<dir_node_auto then
776 get_box_dim_common(key, s, l_dir)
777 elseif b_dir%dir_math_mod==l_dir then
778 setdimen('ltj@tempdima', getfield(s, key))
780 get_box_dim_common(key, getlist(s), l_dir)
783 setdimen('ltj@tempdima', 0)
785 tex.sprint(cat_lp, '\\ltj@tempdima')
788 luatexja.direction.get_box_dim = get_box_dim
790 -- return value: (changed dimen of box itself?)
791 local scan_dimen, scan_int = token.scan_dimen, token.scan_int
792 local scan_keyword = token.scan_keyword
793 local function set_box_dim_common(key, s, l_dir)
794 local s_dir, wh = get_box_dir(s, dir_yoko)
795 s_dir = s_dir%dir_math_mod
796 if s_dir ~= l_dir then
798 wh = create_dir_whatsit(getlist(s), 'set_box_dim', s_dir)
799 setfield(s, 'head', wh)
802 local dnh = getfield(wh, 'value')
803 for x in traverse(dnh) do
804 if has_attr(x, attr_dir)%dir_node_auto==l_dir then
809 db = create_dir_node(s, s_dir, l_dir, true)
810 setfield(db, 'next', dnh)
811 setfield(wh, 'value',to_node(db))
813 setfield(db, key, scan_dimen())
816 setfield(s, key, scan_dimen())
818 -- change dimension of dir_nodes which are created "automatically"
820 = getfield(s,'width'), getfield(s, 'height'), getfield(s, 'depth')
821 for x in traverse(getfield(wh, 'value')) do
822 local x_dir = has_attr(x, attr_dir)
823 if x_dir<dir_node_manual then
824 local info = dir_node_aux[s_dir][x_dir%dir_node_auto]
825 setfield(x, 'width', info.width(bw,bh,bd))
826 setfield(x, 'height', info.height(bw,bh,bd))
827 setfield(x, 'depth', info.depth(bw,bh,bd))
834 local function set_box_dim(key)
835 local s = getbox(scan_int()); scan_keyword('=')
837 local l_dir = (get_dir_count())%dir_math_mod
839 local b_dir = get_box_dir(s,dir_yoko)
840 if b_dir<dir_node_auto then
841 set_box_dim_common(key, s, l_dir)
842 elseif b_dir%dir_math_mod == l_dir then
844 setfield(s, key, scan_dimen())
845 if b_dir<dir_node_manual then
846 set_attr(s, attr_dir, b_dir%dir_node_auto + dir_node_manual)
849 local sid, b = getid(s), getlist(s)
850 local info = dir_node_aux[get_box_dir(b,dir_yoko)%dir_math_mod][b_dir%dir_node_auto]
852 = getfield(b,'width'), getfield(b, 'height'), getfield(b, 'depth')
854 = getfield(s,'width'), getfield(s, 'height'), getfield(s, 'depth')
855 if set_box_dim_common(key, b, l_dir) and b_dir<dir_node_manual then
856 -- re-calculate dimension of s, if s is created "automatically"
857 if b_dir<dir_node_manual then
858 setfield(s, 'width', info.width(bw,bh,bd))
859 setfield(s, 'height', info.height(bw,bh,bd))
860 setfield(s, 'depth', info.depth(bw,bh,bd))
866 luatexja.direction.set_box_dim = set_box_dim
870 local getbox = tex.getbox
871 local function get_register_dir(n)
875 local b_dir = get_box_dir(s, dir_yoko)
876 if b_dir<dir_node_auto then
879 local b_dir = get_box_dir(
880 node_next(node_next(node_next(getlist(s)))), dir_yoko)
887 luatexja.direction.get_register_dir = get_register_dir
891 local getbox, setbox, copy_list = tex.getbox, tex.setbox, node.direct.copy_list
893 function luatexja.direction.raise_box()
894 start_time_measure('box_primitive_hook')
895 local list_dir = get_dir_count()
896 local s = getbox('ltj@afbox')
898 local sd = to_direct(s)
899 local box_dir = get_box_dir(sd, dir_yoko)
900 if box_dir%dir_math_mod ~= list_dir then
903 to_node(copy_list(make_dir_whatsit(sd, sd, list_dir, 'box_move')))
904 -- copy_list しないとリストの整合性が崩れる……?
908 stop_time_measure('box_primitive_hook')
912 -- PACKED の hbox から文字を取り出す
913 -- luatexja.jfmglue.check_box などで使用
915 local function glyph_from_packed(h)
917 return (getid(b)==id_kern or (getid(b)==id_whatsit and getsubtype(b)==sid_save) )
918 and node_next(node_next(node_next(b))) or b
920 luatexja.direction.glyph_from_packed = glyph_from_packed
925 local id_adjust = node.id('adjust')
926 function luatexja.direction.check_adjust_direction()
927 start_time_measure('box_primitive_hook')
928 local list_dir = get_adjust_dir_count()
929 local a = tex_nest[tex_nest.ptr].tail
930 local ad = to_direct(a)
931 if a and getid(ad)==id_adjust then
932 local adj_dir = get_box_dir(ad)
933 if list_dir~=adj_dir then
936 'Direction Incompatible',
937 "\\vadjust's argument and outer vlist must have same direction.")
938 node.direct.last_node()
941 stop_time_measure('box_primitive_hook')
947 local id_ins = node.id('ins')
948 local id_rule = node.id('rule')
949 function luatexja.direction.populate_insertion_dir_whatsit()
950 start_time_measure('box_primitive_hook')
951 local list_dir = get_dir_count()
952 local a = tex_nest[tex_nest.ptr].tail
953 local ad = to_direct(a)
954 if a and getid(ad)==id_ins then
955 local h = getfield(ad, 'head')
956 if getid(h)==id_whatsit and
957 getsubtype(h)==sid_user and getfield(h, 'user_id')==DIR then
958 local n = h; h = node_remove(h,h)
961 for box_rule in traverse(h) do
962 if getid(box_rule)<id_rule then
963 h = insert_before(h, box_rule, dir_pool[list_dir]())
966 ensure_tex_attr(attr_dir, 0)
967 setfield(ad, 'head', h)
969 stop_time_measure('box_primitive_hook')
975 local split_dir_whatsit, split_dir_head
976 local cat_lp = luatexbase.catcodetables['latex-package']
977 local sprint, scan_int, tex_getbox = tex.sprint, token.scan_int, tex.getbox
978 function luatexja.direction.vsplit()
979 local n = scan_int();
980 local p = to_direct(tex_getbox(n))
983 local bh = getlist(p)
984 if getid(bh)==id_whatsit and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR
985 and node_next(bh) then
986 ltjs.list_dir = has_attr(bh, attr_dir)
987 local q = node_next(p)
988 setfield(p, 'head', node_remove(bh,bh,bh))
992 sprint(cat_lp, '\\ltj@@orig@vsplit' .. tostring(n))
994 local function dir_adjust_vpack(h, gc)
995 start_time_measure('direction_vpack')
996 local hd = to_direct(h)
997 if gc=='split_keep' then
998 -- supply dir_whatsit
999 hd = create_dir_whatsit_vbox(hd, gc)
1000 split_dir_whatsit = hd
1001 elseif gc=='split_off' then
1002 if split_dir_head then
1003 list_dir = has_attr(split_dir_head, attr_dir)
1004 hd = insert_before(hd, hd, split_dir_head)
1007 if split_dir_whatsit then
1008 -- adjust direction of 'split_keep'
1009 set_attr(split_dir_whatsit, attr_dir, ltjs.list_dir)
1011 split_dir_whatsit=nil
1012 elseif gc=='preamble' then
1013 split_dir_whatsit=nil
1016 -- hd = process_dir_node(create_dir_whatsit_vbox(hd, gc), gc)
1017 -- done in append_to_vpack callback
1018 hd = create_dir_whatsit_vbox(hd, gc)
1019 split_dir_whatsit=nil
1021 stop_time_measure('direction_vpack')
1024 ltjb.add_to_callback('vpack_filter',
1026 'ltj.direction', 10000)
1030 -- supply direction whatsit to the main vertical list "of the next page"
1031 local function dir_adjust_pre_output(h, gc)
1032 return to_node(create_dir_whatsit_vbox(to_direct(h), gc))
1034 ltjb.add_to_callback('pre_output_filter',
1035 dir_adjust_pre_output,
1036 'ltj.direction', 10000)
1038 function luatexja.direction.remove_end_whatsit()
1039 local h=tex.lists.page_head
1040 if h and (not h.next) and
1041 h.id==id_whatsit and h.subtype==sid_user and
1042 h.user_id == DIR then
1043 tex.lists.page_head = nil
1049 -- append_to_vlist filter
1051 local id_glue = node.id('glue')
1052 local getglue = node.direct.getglue or
1054 return getfield(g,'width'), getfield(g,'stretch'), getfield(g,'shrink'),
1055 getfield(g,'stretch_order'), getfield(g,'shrink_order')
1057 local setglue = luatexja.setglue
1058 local function copy_glue (new_glue, old_glue, subtype, new_w)
1059 setfield(new_glue, 'subtype', subtype)
1060 local w,st,sp,sto,spo = getglue(to_direct(old_glue))
1061 setglue(new_glue, new_w or w, st, sp, sto, spo)
1063 local node_write = node.direct.write
1064 local function dir_adjust_append_vlist(b, loc, prev, mirrored)
1065 local old_b = to_direct(b)
1066 local new_b = loc=='box' and
1067 make_dir_whatsit(old_b, old_b, get_dir_count(), 'append_vlist') or old_b
1069 if prev > -65536000 then
1070 local d = tex.baselineskip.width - prev
1071 - getfield(new_b, mirrored and 'depth' or 'height')
1072 local g = node_new(id_glue)
1073 if d < tex.lineskiplimit then
1074 copy_glue(g, tex.lineskip, 1)
1076 copy_glue(g, tex.baselineskip, 2, d);
1081 tex.prevdepth = getfield(new_b, mirrored and 'height' or 'depth')
1082 return nil -- do nothing on tex side
1084 ltjb.add_to_callback('append_to_vlist_filter',
1085 dir_adjust_append_vlist,
1086 'ltj.direction', 10000)
1089 -- finalize (executed just before \shipout)
1090 -- we supply correct pdfsavematrix nodes etc. inside dir_node
1092 local finalize_inner
1093 local function finalize_dir_node(db,new_dir)
1094 local b = getlist(db)
1096 local w = getfield(b, 'width')
1097 local h = getfield(b, 'height')
1098 local d = getfield(b, 'depth')
1099 local dn_w = getfield(db, 'width')
1100 local dn_h = getfield(db, 'height')
1101 local dn_d = getfield(db, 'depth')
1102 local db_head, db_tail
1103 for _,v in ipairs(dir_node_aux
1104 [get_box_dir(b, dir_yoko)%dir_math_mod][new_dir][getid(b)]) do
1105 local cmd, arg, nn = v[1], v[2]
1107 nn = node_new(id_kern, 1)
1108 setfield(nn, 'kern', arg(w, h, d, dn_w, dn_h, dn_d))
1109 elseif cmd=='whatsit' then
1110 nn = node_new(id_whatsit, arg)
1111 elseif cmd=='rotate' then
1112 nn = node_new(id_whatsit, sid_matrix)
1113 setfield(nn, 'data', arg)
1114 elseif cmd=='box' then
1115 nn = b; setfield(b, 'next', nil)
1116 setfield(nn, 'shift', arg(w, h, d, dn_w, dn_h, dn_d))
1119 insert_after(db_head, db_tail, nn)
1122 setfield(db, 'head', nn)
1123 db_head, db_tail = nn, nn
1128 tex.setattribute(attr_dir, dir_yoko)
1129 local shipout_temp = node_new(id_hlist)
1130 tex.setattribute(attr_dir, 0)
1132 finalize_inner = function (box)
1133 for n in traverse(getlist(box)) do
1134 local nid = getid(n)
1135 if (nid==id_hlist or nid==id_vlist) then
1136 local ndir = get_box_dir(n, dir_yoko)
1137 if ndir>=dir_node_auto then -- n is dir_node
1138 finalize_dir_node(n, ndir%dir_math_mod)
1145 local getbox = tex.getbox
1146 local setbox, copy = node.direct.setbox, node.direct.copy
1147 local lua_mem_kb = 0
1148 function luatexja.direction.finalize()
1149 local a = to_direct(tex.getbox("AtBeginShipoutBox"))
1150 local a_dir = get_box_dir(a, dir_yoko)
1151 if a_dir~=dir_yoko then
1152 local b = create_dir_node(a, a_dir, dir_yoko, false)
1153 setfield(b, 'head', a); a = b
1155 setfield(shipout_temp, 'head', a)
1156 finalize_inner(shipout_temp)
1157 setbox('global', "AtBeginShipoutBox", copy(getlist(shipout_temp)))
1158 setfield(shipout_temp, 'head',nil)
1161 --local m = collectgarbage('count')
1162 --if m>lua_mem_kb+20480 then
1163 -- collectgarbage(); lua_mem_kb = collectgarbage('count')
1165 --print('Lua Memory Usage', lua_mem_kb)