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 PROCESSED = luatexja.icflag_table.PROCESSED
49 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
50 local PACKED = luatexja.icflag_table.PACKED
51 local DIR = luatexja.userid_table.DIR
52 local dir_tate = luatexja.dir_table.dir_tate
53 local dir_yoko = luatexja.dir_table.dir_yoko
54 local dir_dtou = luatexja.dir_table.dir_dtou
55 local dir_utod = luatexja.dir_table.dir_utod
56 local dir_math_mod = luatexja.dir_table.dir_math_mod
57 local dir_node_auto = luatexja.dir_table.dir_node_auto
58 local dir_node_manual = luatexja.dir_table.dir_node_manual
59 local function get_attr_icflag(p)
60 return (has_attr(p, attr_icflag) or 0) % PROCESSED_BEGIN_FLAG
65 local ensure_tex_attr, copy_dir_pool
67 local tex_set_attr = tex.setattribute
68 local tex_get_attr, node_copy = tex.getattribute, Dnode.copy
69 function ensure_tex_attr(a, v)
70 if tex_get_attr(a)~=v then
71 tex_set_attr('global', a, v)
75 for _,i in pairs({dir_tate, dir_yoko, dir_dtou, dir_utod}) do
76 local w = node_new(id_whatsit, sid_user)
77 set_attr(w, attr_dir, i)
78 setfield(w, 'user_id', DIR)
79 setfield(w, 'type', 110)
80 setfield(w, 'next', nil)
83 function copy_dir_pool(d)
84 return node_copy(dir_pool[d])
89 local function adjust_badness(hd)
90 if not node_next(hd) and getid(hd)==id_whatsit and getsubtype(hd)==sid_user
91 and getfield(hd, 'user_id')==DIR then
92 -- avoid double whatsit
93 luatexja.global_temp=tex.globaldefs; tex.globaldefs=0
94 luatexja.hbadness_temp=tex.hbadness; tex.hbadness=10000
95 luatexja.vbadness_temp=tex.vbadness; tex.vbadness=10000
97 luatexja.global_temp = nil
98 luatexja.hbadness_temp=nil
99 luatexja.vbadness_temp=nil
103 local get_dir_count, get_adjust_dir_count
105 local function get_dir_count_inner(h)
107 if h.id==id_whatsit and h.subtype==sid_user and h.user_id==DIR then
108 local ic = node.has_attribute(h, attr_icflag) or 0
109 return (ic<PROCESSED_BEGIN_FLAG)
110 and (node.has_attribute(h,attr_dir)%dir_node_auto) or 0
118 function get_dir_count()
119 for i=tex_nest.ptr, 1, -1 do
120 local h = tex_nest[i].head.next
122 local t = get_dir_count_inner(h)
123 if t~=0 then return t end
126 return page_direction
128 function get_adjust_dir_count()
129 for i=tex_nest.ptr, 1, -1 do
130 local v = tex_nest[i]
131 local h, m = v.head.next, v.mode
132 if abs(m)== ltjs.vmode and h then
133 local t = get_dir_count_inner(h)
134 if t~=0 then return t end
137 return page_direction
139 luatexja.direction.get_dir_count = get_dir_count
140 luatexja.direction.get_adjust_dir_count = get_adjust_dir_count
144 -- \tate, \yoko,\dtou, \utod
146 local node_next = node.next
147 local node_set_attr = node.set_attribute
148 local node_traverse = node.traverse
149 local STCK = luatexja.userid_table.STCK
150 local IHB = luatexja.userid_table.IHB
152 local function test_list(h, lv)
154 return 2 -- need to create dir_whatsit
156 local flag = 2 -- need to create dir_whatsit
158 for p in node_traverse(h) do
159 if p.id==id_whatsit then
160 if p.subtype==sid_user then
163 flag = 1; w = w or p -- found
164 elseif not(uid==IHB or uid==STCK) then
165 flag = 0; break -- error
174 if flag==1 then -- dir_whatsit already exists
181 function luatexja.direction.set_list_direction_hook(v)
182 local lv = tex_nest.ptr -- must be >= 1
185 if abs(tex_nest[lv-1].mode) == ltjs.mmode and v == dir_tate then
189 v = get_adjust_dir_count()
191 local h = to_direct(tex_nest[lv].head)
192 local w = copy_dir_pool(v)
193 insert_after(h, h, w)
194 tex_nest[lv].tail = to_node(node_tail(w))
195 ensure_tex_attr(attr_icflag, 0)
196 ensure_tex_attr(attr_dir, 0)
199 local function set_list_direction(v, name)
200 local lv = tex_nest.ptr
202 v,name = get_dir_count(), nil
203 if lv>=1 and abs(tex_nest[lv-1].mode) == ltjs.mmode and v == dir_tate then
207 v,name = get_adjust_dir_count(), nil
209 if tex.currentgrouptype==6 then
212 "You can't use `\\" .. name .. "' in an align",
213 "To change direction in an align, \n"
214 .. "you shold use \\hbox or \\vbox.")
216 local h = (lv==0) and tex.lists.page_head or tex_nest[lv].head.next
217 local flag,w = test_list(h,lv)
219 if lv==0 and not page_direction then
220 page_direction = v -- for first call of \yoko (in luatexja-core.sty)
224 "Use `\\" .. tostring(name) .. "' at top of list",
225 'Direction change command by LuaTeX-ja is available\n'
226 .. 'only when the current list is null.')
229 node_set_attr(w, attr_dir, v)
230 if lv==0 then page_direction = v end
232 local w = copy_dir_pool(v)
234 if lv==0 then page_direction = v end
236 ensure_tex_attr(attr_icflag, 0)
238 ensure_tex_attr(attr_dir, 0)
240 luatexja.direction.set_list_direction = set_list_direction
243 -- ボックスに dir whatsit を追加
244 local function create_dir_whatsit(hd, gc, new_dir)
245 if getid(hd)==id_whatsit and
246 getsubtype(hd)==sid_user and getfield(hd, 'user_id')==DIR then
247 set_attr(hd, attr_icflag,
248 get_attr_icflag(hd) + PROCESSED_BEGIN_FLAG)
249 local n = node_next(hd)
251 set_attr(n, attr_icflag,
252 get_attr_icflag(n) + PROCESSED_BEGIN_FLAG)
254 ensure_tex_attr(attr_icflag, 0)
257 local w = copy_dir_pool(new_dir)
258 setfield(w, 'next', hd)
259 set_attr(w, attr_icflag, PROCESSED_BEGIN_FLAG)
260 set_attr(hd, attr_icflag,
261 get_attr_icflag(hd) + PROCESSED_BEGIN_FLAG)
262 ensure_tex_attr(attr_icflag, 0)
263 ensure_tex_attr(attr_dir, 0)
268 -- hpack_filter, vpack_filter, post_line_break_filter
269 -- 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' or gc == 'preamble' then
275 set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
276 ensure_tex_attr(attr_icflag, 0)
281 return to_node(create_dir_whatsit(hd, gc, ltjs.list_dir))
285 luatexbase.add_to_callback('hpack_filter',
286 create_dir_whatsit_hpack, 'ltj.create_dir_whatsit', 10000)
290 local function create_dir_whatsit_parbox(h, gc)
291 stop_time_measure('tex_linebreak')
292 -- start 側は ltj-debug.lua に
293 local new_dir, hd = ltjs.list_dir, to_direct(h)
294 for line in traverse_id(id_hlist, hd) do
295 local nh = getlist(line)
296 setfield(line, 'head', create_dir_whatsit(nh, gc, new_dir) )
297 --set_attr(line, attr_dir, new_dir)
299 ensure_tex_attr(attr_dir, 0)
302 luatexbase.add_to_callback('post_linebreak_filter',
303 create_dir_whatsit_parbox, 'ltj.create_dir_whatsit', 10000)
306 local create_dir_whatsit_vbox
309 local id_glue, sid_parskip = node.id('glue'), 3
310 create_dir_whatsit_vbox = function (hd, gc)
311 ltjs.list_dir = get_dir_count()
312 -- remove dir whatsit
313 for x in traverse_id(id_whatsit, hd) do
314 if getsubtype(x)==sid_user and getfield(x, 'user_id')==DIR then
319 ltjs.list_dir =has_attr(hd,attr_dir)
320 local x = node_next(hd)
321 if getid(x)==id_glue and getsubtype(x)==sid_parskip then
322 node_remove(hd,x); node_free(x)
326 hd = node_remove(hd, wh[i]); node_free(wh[i]); wh[i] = nil
328 if gc=='fin_row' then -- gc == 'preamble' case is treated in dir_adjust_vpack
330 set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
331 ensure_tex_attr(attr_icflag, 0)
335 local n =node_next(hd)
337 local w = create_dir_whatsit(hd, gc, ltjs.list_dir)
338 -- move dir whatsit after hd
339 setfield(hd, 'next', w); setfield(w, 'next', n)
342 hd = create_dir_whatsit(hd, gc, ltjs.list_dir)
349 -- dir_node に包む方法を書いたテーブル
352 local floor = math.floor
353 local get_h =function (w,h,d) return h end
354 local get_d =function (w,h,d) return d end
355 local get_h_d =function (w,h,d) return h+d end
356 local get_h_d_neg =function (w,h,d) return -h-d end
357 local get_d_neg =function (w,h,d) return -d end
358 local get_w_half =function (w,h,d) return floor(0.5*w) end
359 local get_w_half_rem =function (w,h,d) return w-floor(0.5*w) end
360 local get_w_neg =function (w,h,d) return -w end
361 local get_w =function (w,h,d) return w end
362 local zero = function() return 0 end
364 [dir_yoko] = { -- yoko を
365 [dir_tate] = { -- tate 中で組む
368 depth = get_w_half_rem,
370 { 'whatsit', sid_save },
371 { 'rotate', '0 1 -1 0' },
372 { 'kern', function(w,h,d,nw,nh,nd) return -nd end },
374 { 'kern', function(w,h,d,nw,nh,nd) return nd-w end },
375 { 'whatsit', sid_restore },
378 { 'whatsit', sid_save },
379 { 'rotate', '0 1 -1 0' },
381 { 'box' , function(w,h,d,nw,nh,nd) return -nh-nd end },
382 { 'kern', get_h_d_neg},
383 { 'whatsit', sid_restore },
386 [dir_dtou] = { -- dtou 中で組む
391 { 'whatsit', sid_save },
392 { 'rotate', '0 -1 1 0' },
393 { 'kern', function(w,h,d,nw,nh,nd) return -nh end },
394 { 'box', get_d_neg },
395 { 'kern', function(w,h,d,nw,nh,nd) return nh-w end },
396 { 'whatsit', sid_restore },
399 { 'whatsit', sid_save },
400 { 'rotate', '0 -1 1 0' },
401 { 'kern', get_h_d_neg },
403 { 'whatsit', sid_restore },
407 [dir_tate] = { -- tate を
408 [dir_yoko] = { -- yoko 中で組む
413 { 'whatsit', sid_save },
414 { 'rotate', '0 -1 1 0' },
415 { 'kern', function (w,h,d,nw,nh,nd) return -nh end },
416 { 'box' , get_d_neg },
417 { 'kern', function (w,h,d,nw,nh,nd) return nh-w end },
418 { 'whatsit', sid_restore },
421 { 'whatsit', sid_save },
422 { 'rotate', '0 -1 1 0' },
423 { 'kern', get_h_d_neg },
425 { 'whatsit', sid_restore },
428 [dir_dtou] = { -- dtou 中で組む
433 { 'whatsit', sid_save },
434 { 'rotate', '-1 0 0 -1' },
435 { 'kern', get_w_neg },
436 { 'box', function (w,h,d,nw,nh,nd) return h-nd end },
437 { 'whatsit', sid_restore },
440 { 'whatsit', sid_save },
441 { 'rotate', '-1 0 0 -1' },
442 { 'kern', get_h_d_neg },
443 { 'box', get_w_neg },
444 { 'whatsit', sid_restore },
448 [dir_dtou] = { -- dtou を
449 [dir_yoko] = { -- yoko 中で組む
454 { 'whatsit', sid_save },
455 { 'rotate', '0 1 -1 0' },
456 { 'kern', function (w,h,d,nw,nh,nd) return -nd end },
458 { 'kern', function (w,h,d,nw,nh,nd) return nd-w end },
459 { 'whatsit', sid_restore },
463 { 'whatsit', sid_save },
464 { 'rotate', '0 1 -1 0' },
465 { 'box', function (w,h,d,nw,nh,nd) return -nd-nh end },
466 { 'kern', get_h_d_neg },
467 { 'whatsit', sid_restore },
470 [dir_tate] = { -- tate 中で組む
475 { 'whatsit', sid_save },
476 { 'rotate', '-1 0 0 -1' },
477 { 'kern', get_w_neg },
478 { 'box', function (w,h,d,nw,nh,nd) return h-nd end },
479 { 'whatsit', sid_restore },
482 { 'whatsit', sid_save },
483 { 'rotate', ' -1 0 0 -1' },
484 { 'kern', function (w,h,d,nw,nh,nd) return -nh-nd end },
485 { 'box', get_w_neg },
486 { 'kern', function (w,h,d,nw,nh,nd) return nh+nd-h-d end },
487 { 'whatsit', sid_restore },
494 -- 1st ret val: b の組方向
495 -- 2nd ret val はその DIR whatsit
496 local function get_box_dir(b, default)
497 start_time_measure('get_box_dir')
498 local dir = has_attr(b, attr_dir) or 0
499 local bh = getfield(b,'head')
500 -- b は insert node となりうるので getlist() は使えない
502 for bh in traverse_id(id_whatsit, bh) do
503 if getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
505 dir = (dir==0) and has_attr(bh, attr_dir) or dir
509 -- if bh and getid(bh)==id_whatsit
510 -- and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
512 -- dir = (dir==0) and has_attr(bh, attr_dir) or dir
514 -- bh = node_next(bh)
516 stop_time_measure('get_box_dir')
517 return (dir==0 and default or dir), c
521 local getbox = tex.getbox
523 function luatexja.direction.unbox_check_dir(is_copy)
524 start_time_measure('box_primitive_hook')
525 local list_dir = get_dir_count()%dir_math_mod
526 local b = getbox(tex_getcount('ltj@tempcnta'))
528 local box_dir = get_box_dir(to_direct(b), dir_yoko)
529 if box_dir%dir_math_mod ~= list_dir then
532 "Incompatible direction list can't be unboxed",
533 'I refuse to unbox a box in differrent direction.')
534 tex.sprint(cat_lp, '\\@gobbletwo')
537 local bd = to_direct(b)
538 local hd = getlist(bd)
541 if getid(hd)==id_whatsit and getsubtype(hd)==sid_user
542 and getfield(hd, 'user_id')==DIR then
544 nh, hd = node_remove(nh, hd)
545 if is_copy and (not dir_backup) then
547 setfield(dir_backup, 'next', nil)
555 setfield(bd, 'head', nh)
558 if luatexja.global_temp and tex.globaldefs~=luatexja.global_temp then
559 tex.globaldefs = luatexja.global_temp
561 stop_time_measure('box_primitive_hook')
563 function luatexja.direction.uncopy_restore_whatsit()
564 local b = getbox(tex_getcount('ltj@tempcnta'))
566 local bd = to_direct(b)
568 setfield(dir_backup, 'next', getlist(bd))
569 setfield(bd, 'head', dir_backup)
576 -- dir_node に包まれている「本来の中身」を取り出し,
578 local function unwrap_dir_node(b, head, box_dir)
579 -- b: dir_node, head: the head of list, box_dir:
580 -- return values are (new head), (next of b), (contents), (dir of contents)
581 local bh = getlist(b)
584 nh = insert_before(head, b, bh)
585 nh, nb = node_remove(nh, b)
586 setfield(b, 'next', nil)
589 local shift_old, b_dir, wh = nil, get_box_dir(bh, 0)
591 Dnode.flush_list(getfield(wh, 'value'))
592 setfield(wh, 'value', nil)
594 return nh, nb, bh, b_dir
597 -- is_manual: 寸法変更に伴うものか?
598 local function create_dir_node(b, b_dir, new_dir, is_manual)
599 local info = dir_node_aux[b_dir%dir_math_mod][new_dir%dir_math_mod]
600 local w = getfield(b, 'width')
601 local h = getfield(b, 'height')
602 local d = getfield(b, 'depth')
603 local db = node_new(getid(b)) -- dir_node
604 set_attr(db, attr_dir,
605 new_dir + (is_manual and dir_node_manual or dir_node_auto))
606 set_attr(db, attr_icflag, PROCESSED)
607 set_attr(b, attr_icflag, PROCESSED)
608 ensure_tex_attr(attr_dir, 0)
609 ensure_tex_attr(attr_icflag, 0)
610 setfield(db, 'dir', getfield(b, 'dir'))
611 setfield(db, 'shift', 0)
612 setfield(db, 'width', info.width(w,h,d))
613 setfield(db, 'height', info.height(w,h,d))
614 setfield(db, 'depth', info.depth(w,h,d))
619 local make_dir_whatsit, process_dir_node
621 make_dir_whatsit = function (head, b, new_dir, origin)
622 new_dir = new_dir%dir_math_mod
623 -- head: list head, b: box
624 -- origin: コール元 (for debug)
625 -- return value: (new head), (next of b), (new b), (is_b_dir_node)
626 -- (new b): b か dir_node に被せられた b
627 local bh = getlist(b)
628 local box_dir, dn = get_box_dir(b, ltjs.list_dir)
629 -- 既に b の中身にあるwhatsit
631 if box_dir%dir_math_mod==new_dir then
632 if box_dir>=dir_node_auto then
633 -- dir_node としてカプセル化されている
634 local _, dnc = get_box_dir(b, 0)
635 if dnc then -- free all other dir_node
636 Dnode.flush_list(getfield(dnc, 'value'))
637 setfield(dnc, 'value', nil)
639 set_attr(b, attr_dir, box_dir%dir_math_mod + dir_node_auto)
640 return head, node_next(b), b, true
642 -- 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
643 return head, node_next(b), b, false
647 local nh, nb, ret, flag
648 if box_dir>= dir_node_auto then -- unwrap
650 head, nb, b, b_dir = unwrap_dir_node(b, head, box_dir)
652 if b_dir%dir_math_mod==new_dir then
653 -- dir_node の中身が周囲の組方向とあっている
654 return head, nb, b, false
655 else box_dir = b_dir end
657 box_dir = box_dir%dir_math_mod
659 local dnh = getfield(dn, 'value')
660 for x in traverse(dnh) do
661 if has_attr(x, attr_dir)%dir_math_mod == new_dir then
662 setfield(dn, 'value', to_node(node_remove(dnh, x)))
666 Dnode.flush_list(getfield(dn, 'value'))
667 setfield(dn, 'value', nil)
668 db = db or create_dir_node(b, box_dir, new_dir, false)
669 local w = getfield(b, 'width')
670 local h = getfield(b, 'height')
671 local d = getfield(b, 'depth')
672 local dn_w = getfield(db, 'width')
673 local dn_h = getfield(db, 'height')
674 local dn_d = getfield(db, 'depth')
675 nh, nb = insert_before(head, b, db), nil
676 nh, nb = node_remove(nh, b)
677 setfield(b, 'next', nil); setfield(db, 'head', b)
679 return nh, nb, ret, flag
682 process_dir_node = function (hd, gc)
683 local x, new_dir = hd, ltjs.list_dir or dir_yoko
686 if (xid==id_hlist and get_attr_icflag(x)~=PACKED)
687 or xid==id_vlist then
688 hd, x = make_dir_whatsit(hd, x, new_dir, 'process_dir_node:' .. gc)
697 local node_prev = (Dnode~=node) and Dnode.getprev or node.prev
698 local function lastbox_hook()
699 start_time_measure('box_primitive_hook')
700 local bn = tex_nest[tex_nest.ptr].tail
702 local b, head = to_direct(bn), to_direct(tex_nest[tex_nest.ptr].head)
704 if bid==id_hlist or bid==id_vlist then
705 local box_dir = get_box_dir(b, 0)
706 if box_dir>= dir_node_auto then -- unwrap dir_node
707 local p = node_prev(b)
708 local dummy1, dummy2, nb = unwrap_dir_node(b, nil, box_dir)
709 setfield(p, 'next', nb); tex_nest[tex_nest.ptr].tail = to_node(nb)
710 setfield(b, 'next', nil); setfield(b, 'head', nil)
713 local _, wh = get_box_dir(b, 0) -- clean dir_node attached to the box
715 Dnode.flush_list(getfield('value', wh))
716 setfield(wh, 'value', nil)
720 stop_time_measure('box_primitive_hook')
723 luatexja.direction.make_dir_whatsit = make_dir_whatsit
724 luatexja.direction.lastbox_hook = lastbox_hook
727 -- \wd, \ht, \dp の代わり
729 local getbox, setdimen = tex.getbox, tex.setdimen
730 local function get_box_dim_common(key, s, l_dir)
732 local s_dir, wh = get_box_dir(s, dir_yoko)
733 s_dir = s_dir%dir_math_mod
734 if s_dir ~= l_dir then
735 local not_found = true
736 for x in traverse(getfield(wh, 'value')) do
737 if l_dir == has_attr(x, attr_dir)%dir_node_auto then
738 setdimen('ltj@tempdima', getfield(x, key))
739 not_found = false; break
743 local w = getfield(s, 'width')
744 local h = getfield(s, 'height')
745 local d = getfield(s, 'depth')
746 setdimen('ltj@tempdima',
747 dir_node_aux[s_dir][l_dir][key](w,h,d))
750 setdimen('ltj@tempdima', getfield(s, key))
753 local function get_box_dim(key, n)
754 local gt = tex.globaldefs; tex.globaldefs = 0
757 local l_dir = (get_dir_count())%dir_math_mod
759 local b_dir = get_box_dir(s,dir_yoko)
760 if b_dir<dir_node_auto then
761 get_box_dim_common(key, s, l_dir)
762 elseif b_dir%dir_math_mod==l_dir then
763 setdimen('ltj@tempdima', getfield(s, key))
765 get_box_dim_common(key, getlist(s), l_dir)
768 setdimen('ltj@tempdima', 0)
772 luatexja.direction.get_box_dim = get_box_dim
774 -- return value: (changed dimen of box itself?)
775 local function set_box_dim_common(key, s, l_dir)
776 local s_dir, wh = get_box_dir(s, dir_yoko)
777 s_dir = s_dir%dir_math_mod
778 if s_dir ~= l_dir then
780 wh = create_dir_whatsit(getlist(s), 'set_box_dim', s_dir)
781 setfield(s, 'head', wh)
784 local dnh = getfield(wh, 'value')
785 for x in traverse(dnh) do
786 if has_attr(x, attr_dir)%dir_node_auto==l_dir then
791 db = create_dir_node(s, s_dir, l_dir, true)
792 setfield(db, 'next', dnh)
793 setfield(wh, 'value',to_node(db))
795 setfield(db, key, tex.getdimen('ltj@tempdima'))
798 setfield(s, key, tex.getdimen('ltj@tempdima'))
800 -- change dimension of dir_nodes which are created "automatically"
802 = getfield(s,'width'), getfield(s, 'height'), getfield(s, 'depth')
803 for x in traverse(getfield(wh, 'value')) do
804 local x_dir = has_attr(x, attr_dir)
805 if x_dir<dir_node_manual then
806 local info = dir_node_aux[s_dir][x_dir%dir_node_auto]
807 setfield(x, 'width', info.width(bw,bh,bd))
808 setfield(x, 'height', info.height(bw,bh,bd))
809 setfield(x, 'depth', info.depth(bw,bh,bd))
816 local function set_box_dim(key)
817 local n = tex_getcount('ltj@tempcnta')
820 local l_dir = (get_dir_count())%dir_math_mod
822 local b_dir = get_box_dir(s,dir_yoko)
823 if b_dir<dir_node_auto then
824 set_box_dim_common(key, s, l_dir)
825 elseif b_dir%dir_math_mod == l_dir then
827 setfield(s, key, tex.getdimen('ltj@tempdima'))
828 if b_dir<dir_node_manual then
829 set_attr(s, attr_dir, b_dir%dir_node_auto + dir_node_manual)
832 local sid, b = getid(s), getlist(s)
833 local info = dir_node_aux[get_box_dir(b,dir_yoko)%dir_math_mod][b_dir%dir_node_auto]
835 = getfield(b,'width'), getfield(b, 'height'), getfield(b, 'depth')
837 = getfield(s,'width'), getfield(s, 'height'), getfield(s, 'depth')
838 if set_box_dim_common(key, b, l_dir) and b_dir<dir_node_manual then
839 -- re-calculate dimension of s, if s is created "automatically"
840 if b_dir<dir_node_manual then
841 setfield(s, 'width', info.width(bw,bh,bd))
842 setfield(s, 'height', info.height(bw,bh,bd))
843 setfield(s, 'depth', info.depth(bw,bh,bd))
849 luatexja.direction.set_box_dim = set_box_dim
853 local getbox = tex.getbox
854 local function get_register_dir(n)
858 local b_dir = get_box_dir(s, dir_yoko)
859 if b_dir<dir_node_auto then
862 local b_dir = get_box_dir(
863 node_next(node_next(node_next(getlist(s)))), dir_yoko)
870 luatexja.direction.get_register_dir = get_register_dir
874 local getbox, setbox, copy_list = tex.getbox, tex.setbox, Dnode.copy_list
876 function luatexja.direction.raise_box()
877 start_time_measure('box_primitive_hook')
878 local list_dir = get_dir_count()
879 local s = getbox('ltj@afbox')
881 local sd = to_direct(s)
882 local box_dir = get_box_dir(sd, dir_yoko)
883 if box_dir%dir_math_mod ~= list_dir then
886 to_node(copy_list(make_dir_whatsit(sd, sd, list_dir, 'box_move')))
887 -- copy_list しないとリストの整合性が崩れる……?
891 stop_time_measure('box_primitive_hook')
895 -- PACKED の hbox から文字を取り出す
896 -- luatexja.jfmglue.check_box などで使用
898 local function glyph_from_packed(h)
900 return (getid(b)==id_kern or (getid(b)==id_whatsit and getsubtype(b)==sid_save) )
901 and node_next(node_next(node_next(b))) or b
903 luatexja.direction.glyph_from_packed = glyph_from_packed
908 local id_adjust = node.id('adjust')
909 function luatexja.direction.check_adjust_direction()
910 start_time_measure('box_primitive_hook')
911 local list_dir = get_adjust_dir_count()
912 local a = tex_nest[tex_nest.ptr].tail
913 local ad = to_direct(a)
914 if a and getid(ad)==id_adjust then
915 local adj_dir = get_box_dir(ad)
916 if list_dir~=adj_dir then
919 'Direction Incompatible',
920 "\\vadjust's argument and outer vlist must have same direction.")
924 stop_time_measure('box_primitive_hook')
930 local id_ins = node.id('ins')
931 local id_rule = node.id('rule')
932 function luatexja.direction.populate_insertion_dir_whatsit()
933 start_time_measure('box_primitive_hook')
934 local list_dir = get_dir_count()
935 local a = tex_nest[tex_nest.ptr].tail
936 local ad = to_direct(a)
937 if a and getid(ad)==id_ins then
938 local h = getfield(ad, 'head')
939 if getid(h)==id_whatsit and
940 getsubtype(h)==sid_user and getfield(h, 'user_id')==DIR then
941 local n = h; h = node_remove(h,h)
944 for box_rule in traverse(h) do
945 if getid(box_rule)<id_rule then
946 local w = copy_dir_pool(list_dir)
947 h = insert_before(h, box_rule, w)
950 ensure_tex_attr(attr_dir, 0)
951 setfield(ad, 'head', h)
953 stop_time_measure('box_primitive_hook')
959 local split_dir_whatsit
960 local function dir_adjust_vpack(h, gc)
961 start_time_measure('direction_vpack')
962 local hd = to_direct(h)
963 if gc=='split_keep' then
964 -- supply dir_whatsit
965 hd = create_dir_whatsit_vbox(hd, gc)
966 split_dir_whatsit = hd
967 elseif gc=='split_off' then
968 for bh in traverse_id(id_whatsit, hd) do
969 if getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
970 ltjs.list_dir = has_attr(bh, attr_dir); break
975 -- if bh and getid(bh)==id_whatsit
976 -- and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
977 -- ltjs.list_dir = has_attr(bh, attr_dir); break
979 -- bh = node_next(bh)
981 if split_dir_whatsit then
982 -- adjust direction of 'split_keep'
983 set_attr(split_dir_whatsit, attr_dir, ltjs.list_dir)
985 split_dir_whatsit=nil
986 elseif gc=='preamble' then
987 split_dir_whatsit=nil
990 hd = process_dir_node(create_dir_whatsit_vbox(hd, gc), gc)
991 split_dir_whatsit=nil
993 stop_time_measure('direction_vpack')
996 luatexbase.add_to_callback('vpack_filter',
998 'ltj.direction', 10000)
1002 -- supply direction whatsit to the main vertical list "of the next page"
1003 local function dir_adjust_pre_output(h, gc)
1004 return to_node(create_dir_whatsit_vbox(to_direct(h), gc))
1006 luatexbase.add_to_callback('pre_output_filter',
1007 dir_adjust_pre_output,
1008 'ltj.direction', 10000)
1010 function luatexja.direction.remove_end_whatsit()
1011 local h=tex.lists.page_head
1012 if h and (not h.next) and
1013 h.id==id_whatsit and h.subtype==sid_user and
1014 h.user_id == DIR then
1015 tex.lists.page_head = nil
1023 local function dir_adjust_buildpage(info)
1025 local head = to_direct(tex.lists.contrib_head)
1029 = make_dir_whatsit(head,
1033 tex.lists.contrib_head = to_node(head)
1037 luatexbase.add_to_callback('buildpage_filter',
1038 dir_adjust_buildpage,
1039 'ltj.direction', 10000)
1042 -- finalize (executed just before \shipout)
1043 -- we supply correct pdfsavematrix nodes etc. inside dir_node
1045 local finalize_inner
1046 local function finalize_dir_node(db,new_dir)
1047 local b = getlist(db)
1049 local box_dir = get_box_dir(b, dir_yoko)%dir_math_mod
1050 setfield(db, 'head', nil)
1051 local w = getfield(b, 'width')
1052 local h = getfield(b, 'height')
1053 local d = getfield(b, 'depth')
1054 local dn_w = getfield(db, 'width')
1055 local dn_h = getfield(db, 'height')
1056 local dn_d = getfield(db, 'depth')
1057 local db_head, db_tail = nil
1058 for _,v in ipairs(dir_node_aux[box_dir][new_dir][getid(b)]) do
1059 local cmd, arg, nn = v[1], v[2]
1061 nn = node_new(id_kern)
1062 setfield(nn, 'kern', arg(w, h, d, dn_w, dn_h, dn_d))
1063 elseif cmd=='whatsit' then
1064 nn = node_new(id_whatsit, arg)
1065 elseif cmd=='rotate' then
1066 nn = node_new(id_whatsit, sid_matrix)
1067 setfield(nn, 'data', arg)
1068 elseif cmd=='box' then
1069 nn = b; setfield(b, 'next', nil)
1070 setfield(nn, 'shift', arg(w, h, d, dn_w, dn_h, dn_d))
1073 insert_after(db_head, db_tail, nn)
1076 db_head, db_tail = nn, nn
1078 setfield(db, 'head', db_head)
1082 tex.setattribute(attr_dir, dir_yoko)
1083 local shipout_temp = node_new(id_hlist)
1084 tex.setattribute(attr_dir, 0)
1086 finalize_inner = function (box)
1087 for n in traverse(getlist(box)) do
1088 local nid = getid(n)
1089 if (nid==id_hlist or nid==id_vlist) then
1090 local ndir = get_box_dir(n, dir_yoko)
1091 if ndir>=dir_node_auto then -- n is dir_node
1092 finalize_dir_node(n, ndir%dir_math_mod)
1099 local getbox = tex.getbox
1100 local setbox, copy = Dnode.setbox, Dnode.copy
1101 function luatexja.direction.finalize()
1102 local a = to_direct(tex.getbox("AtBeginShipoutBox"))
1103 local a_dir = get_box_dir(a, dir_yoko)
1104 if a_dir~=dir_yoko then
1105 local b = create_dir_node(a, a_dir, dir_yoko, false)
1106 setfield(b, 'head', a); a = b
1108 setfield(shipout_temp, 'head', a)
1109 finalize_inner(shipout_temp)
1110 setbox('global', "AtBeginShipoutBox", copy(getlist(shipout_temp)))
1111 setfield(shipout_temp, 'head',nil)
1112 --print('MM', collectgarbage('count'))