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 ensure_tex_attr = ltjb.ensure_tex_attr
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
68 local node_copy = Dnode.copy
70 for _,i in pairs({dir_tate, dir_yoko, dir_dtou, dir_utod}) do
71 local w = node_new(id_whatsit, sid_user)
72 set_attr(w, attr_dir, i)
73 setfield(w, 'user_id', DIR)
74 setfield(w, 'type', 110)
75 setfield(w, 'next', nil)
76 dir_pool[i] = function () return node_copy(w) end
81 local function adjust_badness(hd)
82 if not node_next(hd) and getid(hd)==id_whatsit and getsubtype(hd)==sid_user
83 and getfield(hd, 'user_id')==DIR then
84 -- avoid double whatsit
85 luatexja.global_temp=tex.globaldefs; tex.globaldefs=0
86 luatexja.hbadness_temp=tex.hbadness; tex.hbadness=10000
87 luatexja.vbadness_temp=tex.vbadness; tex.vbadness=10000
89 luatexja.global_temp = nil
90 luatexja.hbadness_temp=nil
91 luatexja.vbadness_temp=nil
95 local get_dir_count, get_adjust_dir_count
97 local function get_dir_count_inner(h)
99 if h.id==id_whatsit and h.subtype==sid_user and h.user_id==DIR then
100 local ic = node.has_attribute(h, attr_icflag) or 0
101 return (ic<PROCESSED_BEGIN_FLAG)
102 and (node.has_attribute(h,attr_dir)%dir_node_auto) or 0
110 function get_dir_count()
111 for i=tex_nest.ptr, 1, -1 do
112 local h = tex_nest[i].head.next
114 local t = get_dir_count_inner(h)
115 if t~=0 then return t end
118 return page_direction
120 function get_adjust_dir_count()
121 for i=tex_nest.ptr, 1, -1 do
122 local v = tex_nest[i]
123 local h, m = v.head.next, v.mode
124 if abs(m)== ltjs.vmode and h then
125 local t = get_dir_count_inner(h)
126 if t~=0 then return t end
129 return page_direction
131 luatexja.direction.get_dir_count = get_dir_count
132 luatexja.direction.get_adjust_dir_count = get_adjust_dir_count
136 -- \tate, \yoko,\dtou, \utod
138 local node_next = node.next
139 local node_set_attr = node.set_attribute
140 local node_traverse = node.traverse
141 local STCK = luatexja.userid_table.STCK
142 local IHB = luatexja.userid_table.IHB
143 local sid_local = node.subtype('local_par')
144 local id_local = node.id('local_par')
146 local function test_list(h, lv)
148 return 2 -- need to create dir_whatsit
150 local flag = 2 -- need to create dir_whatsit
152 for p in node_traverse(h) do
153 if p.id==id_whatsit then
158 flag = 1; w = w or p -- found
159 elseif not(uid==IHB or uid==STCK) then
160 flag = 0; break -- error
162 elseif ps~=sid_local then
165 elseif p.id~=id_local then
169 if flag==1 then -- dir_whatsit already exists
176 function luatexja.direction.set_list_direction_hook(v)
177 local lv = tex_nest.ptr -- must be >= 1
180 if abs(tex_nest[lv-1].mode) == ltjs.mmode and v == dir_tate then
184 v = get_adjust_dir_count()
186 local h = to_direct(tex_nest[lv].head)
187 local w = dir_pool[v]()
188 insert_after(h, h, w)
189 tex_nest[lv].tail = to_node(node_tail(w))
190 ensure_tex_attr(attr_icflag, 0)
191 ensure_tex_attr(attr_dir, 0)
194 local function set_list_direction(v, name)
195 local lv = tex_nest.ptr
197 v,name = get_dir_count(), nil
198 if lv>=1 and abs(tex_nest[lv-1].mode) == ltjs.mmode and v == dir_tate then
202 v,name = get_adjust_dir_count(), nil
204 if tex.currentgrouptype==6 then
207 "You can't use `\\" .. name .. "' in an align",
208 "To change direction in an align, \n"
209 .. "you shold use \\hbox or \\vbox.")
211 local h = (lv==0) and tex.lists.page_head or tex_nest[lv].head.next
212 local flag,w = test_list(h,lv)
214 if lv==0 and not page_direction then
215 page_direction = v -- for first call of \yoko (in luatexja-core.sty)
219 "Use `\\" .. tostring(name) .. "' at top of list",
220 'Direction change command by LuaTeX-ja is available\n'
221 .. 'only when the current list is null.')
224 node_set_attr(w, attr_dir, v)
225 if lv==0 then page_direction = v end
227 if lv==0 then page_direction = v end
229 ensure_tex_attr(attr_icflag, 0)
231 ensure_tex_attr(attr_dir, 0)
233 luatexja.direction.set_list_direction = set_list_direction
236 -- ボックスに dir whatsit を追加
237 local function create_dir_whatsit(hd, gc, new_dir)
238 if getid(hd)==id_whatsit and
239 getsubtype(hd)==sid_user and getfield(hd, 'user_id')==DIR then
240 set_attr(hd, attr_icflag,
241 get_attr_icflag(hd) + PROCESSED_BEGIN_FLAG)
242 local n = node_next(hd)
244 set_attr(n, attr_icflag,
245 get_attr_icflag(n) + PROCESSED_BEGIN_FLAG)
247 ensure_tex_attr(attr_icflag, 0)
250 local w = dir_pool[new_dir]()
251 setfield(w, 'next', hd)
252 set_attr(w, attr_icflag, PROCESSED_BEGIN_FLAG)
253 set_attr(hd, attr_icflag,
254 get_attr_icflag(hd) + PROCESSED_BEGIN_FLAG)
255 ensure_tex_attr(attr_icflag, 0)
256 ensure_tex_attr(attr_dir, 0)
261 -- hpack_filter, vpack_filter, post_line_break_filter
262 -- の結果を組方向を明示するため,先頭に dir_node を設置
264 local function create_dir_whatsit_hpack(h, gc)
265 local hd = to_direct(h)
266 if gc=='fin_row' or gc == 'preamble' then
268 set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
269 ensure_tex_attr(attr_icflag, 0)
274 return to_node(create_dir_whatsit(hd, gc, ltjs.list_dir))
278 ltjb.add_to_callback('hpack_filter',
279 create_dir_whatsit_hpack, 'ltj.create_dir_whatsit', 10000)
283 local function create_dir_whatsit_parbox(h, gc)
284 stop_time_measure('tex_linebreak')
285 -- start 側は ltj-debug.lua に
286 local new_dir = ltjs.list_dir
287 for line in traverse_id(id_hlist, to_direct(h)) do
288 setfield(line, 'head', create_dir_whatsit(getlist(line), gc, new_dir) )
290 ensure_tex_attr(attr_dir, 0)
293 ltjb.add_to_callback('post_linebreak_filter',
294 create_dir_whatsit_parbox, 'ltj.create_dir_whatsit', 10000)
297 local create_dir_whatsit_vbox
300 local id_glue, sid_parskip = node.id('glue'), 3
301 create_dir_whatsit_vbox = function (hd, gc)
302 ltjs.list_dir = get_dir_count()
303 -- remove dir whatsit
304 for x in traverse_id(id_whatsit, hd) do
305 if getsubtype(x)==sid_user and getfield(x, 'user_id')==DIR then
310 ltjs.list_dir =has_attr(hd,attr_dir)
311 local x = node_next(hd)
312 if getid(x)==id_glue and getsubtype(x)==sid_parskip then
313 node_remove(hd,x); node_free(x)
317 hd = node_remove(hd, wh[i]); node_free(wh[i]); wh[i] = nil
319 if gc=='fin_row' then -- gc == 'preamble' case is treated in dir_adjust_vpack
321 set_attr(hd, attr_icflag, PROCESSED_BEGIN_FLAG)
322 ensure_tex_attr(attr_icflag, 0)
326 local n =node_next(hd)
328 local w = create_dir_whatsit(hd, gc, ltjs.list_dir)
329 -- move dir whatsit after hd
330 setfield(hd, 'next', w); setfield(w, 'next', n)
333 hd = create_dir_whatsit(hd, gc, ltjs.list_dir)
340 -- dir_node に包む方法を書いたテーブル
343 local floor = math.floor
344 local get_h =function (w,h,d) return h end
345 local get_d =function (w,h,d) return d end
346 local get_h_d =function (w,h,d) return h+d end
347 local get_h_d_neg =function (w,h,d) return -h-d end
348 local get_d_neg =function (w,h,d) return -d end
349 local get_w_half =function (w,h,d) return floor(0.5*w) end
350 local get_w_half_rem =function (w,h,d) return w-floor(0.5*w) end
351 local get_w_neg =function (w,h,d) return -w end
352 local get_w =function (w,h,d) return w end
353 local zero = function() return 0 end
355 [dir_yoko] = { -- yoko を
356 [dir_tate] = { -- tate 中で組む
359 depth = get_w_half_rem,
361 { 'whatsit', sid_save },
362 { 'rotate', '0 1 -1 0' },
363 { 'kern', function(w,h,d,nw,nh,nd) return -nd end },
365 { 'kern', function(w,h,d,nw,nh,nd) return nd-w end },
366 { 'whatsit', sid_restore },
369 { 'whatsit', sid_save },
370 { 'rotate', '0 1 -1 0' },
372 { 'box' , function(w,h,d,nw,nh,nd) return -nh-nd end },
373 { 'kern', get_h_d_neg},
374 { 'whatsit', sid_restore },
377 [dir_dtou] = { -- dtou 中で組む
382 { 'whatsit', sid_save },
383 { 'rotate', '0 -1 1 0' },
384 { 'kern', function(w,h,d,nw,nh,nd) return -nh end },
385 { 'box', get_d_neg },
386 { 'kern', function(w,h,d,nw,nh,nd) return nh-w end },
387 { 'whatsit', sid_restore },
390 { 'whatsit', sid_save },
391 { 'rotate', '0 -1 1 0' },
392 { 'kern', get_h_d_neg },
394 { 'whatsit', sid_restore },
398 [dir_tate] = { -- tate を
399 [dir_yoko] = { -- yoko 中で組む
404 { 'whatsit', sid_save },
405 { 'rotate', '0 -1 1 0' },
406 { 'kern', function (w,h,d,nw,nh,nd) return -nh end },
407 { 'box' , get_d_neg },
408 { 'kern', function (w,h,d,nw,nh,nd) return nh-w end },
409 { 'whatsit', sid_restore },
412 { 'whatsit', sid_save },
413 { 'rotate', '0 -1 1 0' },
414 { 'kern', get_h_d_neg },
416 { 'whatsit', sid_restore },
419 [dir_dtou] = { -- dtou 中で組む
424 { 'whatsit', sid_save },
425 { 'rotate', '-1 0 0 -1' },
426 { 'kern', get_w_neg },
427 { 'box', function (w,h,d,nw,nh,nd) return h-nd end },
428 { 'whatsit', sid_restore },
431 { 'whatsit', sid_save },
432 { 'rotate', '-1 0 0 -1' },
433 { 'kern', get_h_d_neg },
434 { 'box', get_w_neg },
435 { 'whatsit', sid_restore },
439 [dir_dtou] = { -- dtou を
440 [dir_yoko] = { -- yoko 中で組む
445 { 'whatsit', sid_save },
446 { 'rotate', '0 1 -1 0' },
447 { 'kern', function (w,h,d,nw,nh,nd) return -nd end },
449 { 'kern', function (w,h,d,nw,nh,nd) return nd-w end },
450 { 'whatsit', sid_restore },
454 { 'whatsit', sid_save },
455 { 'rotate', '0 1 -1 0' },
456 { 'box', function (w,h,d,nw,nh,nd) return -nd-nh end },
457 { 'kern', get_h_d_neg },
458 { 'whatsit', sid_restore },
461 [dir_tate] = { -- tate 中で組む
466 { 'whatsit', sid_save },
467 { 'rotate', '-1 0 0 -1' },
468 { 'kern', get_w_neg },
469 { 'box', function (w,h,d,nw,nh,nd) return h-nd end },
470 { 'whatsit', sid_restore },
473 { 'whatsit', sid_save },
474 { 'rotate', ' -1 0 0 -1' },
475 { 'kern', function (w,h,d,nw,nh,nd) return -nh-nd end },
476 { 'box', get_w_neg },
477 { 'kern', function (w,h,d,nw,nh,nd) return nh+nd-h-d end },
478 { 'whatsit', sid_restore },
485 -- 1st ret val: b の組方向
486 -- 2nd ret val はその DIR whatsit
487 local function get_box_dir(b, default)
488 start_time_measure('get_box_dir')
489 local dir = has_attr(b, attr_dir) or 0
490 local bh = getfield(b,'head')
491 -- b は insert node となりうるので getlist() は使えない
493 if bh~=0 then -- bh != nil
494 for bh in traverse_id(id_whatsit, bh) do
495 if getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
497 dir = (dir==0) and has_attr(bh, attr_dir) or dir
502 -- if bh and getid(bh)==id_whatsit
503 -- and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
505 -- dir = (dir==0) and has_attr(bh, attr_dir) or dir
507 -- bh = node_next(bh)
509 stop_time_measure('get_box_dir')
510 return (dir==0 and default or dir), c
514 local getbox = tex.getbox
516 function luatexja.direction.unbox_check_dir(is_copy)
517 start_time_measure('box_primitive_hook')
518 local list_dir = get_dir_count()%dir_math_mod
519 local b = getbox(tex_getcount('ltj@tempcnta'))
521 local box_dir = get_box_dir(to_direct(b), dir_yoko)
522 if box_dir%dir_math_mod ~= list_dir then
525 "Incompatible direction list can't be unboxed",
526 'I refuse to unbox a box in differrent direction.')
527 tex.sprint(cat_lp, '\\@gobbletwo')
530 local bd = to_direct(b)
531 local hd = getlist(bd)
534 if getid(hd)==id_whatsit and getsubtype(hd)==sid_user
535 and getfield(hd, 'user_id')==DIR then
537 nh, hd = node_remove(nh, hd)
538 if is_copy and (not dir_backup) then
540 setfield(dir_backup, 'next', nil)
548 setfield(bd, 'head', nh)
551 if luatexja.global_temp and tex.globaldefs~=luatexja.global_temp then
552 tex.globaldefs = luatexja.global_temp
554 stop_time_measure('box_primitive_hook')
556 function luatexja.direction.uncopy_restore_whatsit()
557 local b = getbox(tex_getcount('ltj@tempcnta'))
559 local bd = to_direct(b)
561 setfield(dir_backup, 'next', getlist(bd))
562 setfield(bd, 'head', dir_backup)
569 -- dir_node に包まれている「本来の中身」を取り出し,
571 local function unwrap_dir_node(b, head, box_dir)
572 -- b: dir_node, head: the head of list, box_dir:
573 -- return values are (new head), (next of b), (contents), (dir of contents)
574 local bh = getlist(b)
577 nh = insert_before(head, b, bh)
578 nh, nb = node_remove(nh, b)
579 setfield(b, 'next', nil)
582 local shift_old, b_dir, wh = nil, get_box_dir(bh, 0)
584 Dnode.flush_list(getfield(wh, 'value'))
585 setfield(wh, 'value', nil)
587 return nh, nb, bh, b_dir
590 -- is_manual: 寸法変更に伴うものか?
591 local function create_dir_node(b, b_dir, new_dir, is_manual)
592 local info = dir_node_aux[b_dir%dir_math_mod][new_dir%dir_math_mod]
593 local w = getfield(b, 'width')
594 local h = getfield(b, 'height')
595 local d = getfield(b, 'depth')
596 local db = node_new(getid(b)) -- dir_node
597 set_attr(db, attr_dir,
598 new_dir + (is_manual and dir_node_manual or dir_node_auto))
599 set_attr(db, attr_icflag, PROCESSED)
600 set_attr(b, attr_icflag, PROCESSED)
601 ensure_tex_attr(attr_dir, 0)
602 ensure_tex_attr(attr_icflag, 0)
603 setfield(db, 'dir', getfield(b, 'dir'))
604 setfield(db, 'shift', 0)
605 setfield(db, 'width', info.width(w,h,d))
606 setfield(db, 'height', info.height(w,h,d))
607 setfield(db, 'depth', info.depth(w,h,d))
612 local make_dir_whatsit, process_dir_node
614 make_dir_whatsit = function (head, b, new_dir, origin)
615 new_dir = new_dir%dir_math_mod
616 -- head: list head, b: box
617 -- origin: コール元 (for debug)
618 -- return value: (new head), (next of b), (new b), (is_b_dir_node)
619 -- (new b): b か dir_node に被せられた b
620 local bh = getlist(b)
621 local box_dir, dn = get_box_dir(b, ltjs.list_dir)
622 -- 既に b の中身にあるwhatsit
624 if box_dir%dir_math_mod==new_dir then
625 if box_dir>=dir_node_auto then
626 -- dir_node としてカプセル化されている
627 local _, dnc = get_box_dir(b, 0)
628 if dnc then -- free all other dir_node
629 Dnode.flush_list(getfield(dnc, 'value'))
630 setfield(dnc, 'value', nil)
632 set_attr(b, attr_dir, box_dir%dir_math_mod + dir_node_auto)
633 return head, node_next(b), b, true
635 -- 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
636 return head, node_next(b), b, false
640 local nh, nb, ret, flag
641 if box_dir>= dir_node_auto then -- unwrap
643 head, nb, b, b_dir = unwrap_dir_node(b, head, box_dir)
645 if b_dir%dir_math_mod==new_dir then
646 -- dir_node の中身が周囲の組方向とあっている
647 return head, nb, b, false
648 else box_dir = b_dir end
650 box_dir = box_dir%dir_math_mod
652 local dnh = getfield(dn, 'value')
653 for x in traverse(dnh) do
654 if has_attr(x, attr_dir)%dir_math_mod == new_dir then
655 setfield(dn, 'value', to_node(node_remove(dnh, x)))
659 Dnode.flush_list(getfield(dn, 'value'))
660 setfield(dn, 'value', nil)
661 db = db or create_dir_node(b, box_dir, new_dir, false)
662 local w = getfield(b, 'width')
663 local h = getfield(b, 'height')
664 local d = getfield(b, 'depth')
665 local dn_w = getfield(db, 'width')
666 local dn_h = getfield(db, 'height')
667 local dn_d = getfield(db, 'depth')
668 nh, nb = insert_before(head, b, db), nil
669 nh, nb = node_remove(nh, b)
670 setfield(b, 'next', nil); setfield(db, 'head', b)
672 return nh, nb, ret, flag
675 process_dir_node = function (hd, gc)
676 local x, new_dir = hd, ltjs.list_dir or dir_yoko
679 if (xid==id_hlist and get_attr_icflag(x)~=PACKED)
680 or xid==id_vlist then
681 hd, x = make_dir_whatsit(hd, x, new_dir, 'process_dir_node:' .. gc)
690 local node_prev = (Dnode~=node) and Dnode.getprev or node.prev
691 local function lastbox_hook()
692 start_time_measure('box_primitive_hook')
693 local bn = tex_nest[tex_nest.ptr].tail
695 local b, head = to_direct(bn), to_direct(tex_nest[tex_nest.ptr].head)
697 if bid==id_hlist or bid==id_vlist then
698 local box_dir = get_box_dir(b, 0)
699 if box_dir>= dir_node_auto then -- unwrap dir_node
700 local p = node_prev(b)
701 local dummy1, dummy2, nb = unwrap_dir_node(b, nil, box_dir)
702 setfield(p, 'next', nb); tex_nest[tex_nest.ptr].tail = to_node(nb)
703 setfield(b, 'next', nil); setfield(b, 'head', nil)
706 local _, wh = get_box_dir(b, 0) -- clean dir_node attached to the box
708 Dnode.flush_list(getfield('value', wh))
709 setfield(wh, 'value', nil)
713 stop_time_measure('box_primitive_hook')
716 luatexja.direction.make_dir_whatsit = make_dir_whatsit
717 luatexja.direction.lastbox_hook = lastbox_hook
720 -- \wd, \ht, \dp の代わり
722 local getbox, setdimen = tex.getbox, tex.setdimen
723 local function get_box_dim_common(key, s, l_dir)
725 local s_dir, wh = get_box_dir(s, dir_yoko)
726 s_dir = s_dir%dir_math_mod
727 if s_dir ~= l_dir then
728 local not_found = true
729 for x in traverse(getfield(wh, 'value')) do
730 if l_dir == has_attr(x, attr_dir)%dir_node_auto then
731 setdimen('ltj@tempdima', getfield(x, key))
732 not_found = false; break
736 local w = getfield(s, 'width')
737 local h = getfield(s, 'height')
738 local d = getfield(s, 'depth')
739 setdimen('ltj@tempdima',
740 dir_node_aux[s_dir][l_dir][key](w,h,d))
743 setdimen('ltj@tempdima', getfield(s, key))
746 local function get_box_dim(key, n)
747 local gt = tex.globaldefs; tex.globaldefs = 0
750 local l_dir = (get_dir_count())%dir_math_mod
752 local b_dir = get_box_dir(s,dir_yoko)
753 if b_dir<dir_node_auto then
754 get_box_dim_common(key, s, l_dir)
755 elseif b_dir%dir_math_mod==l_dir then
756 setdimen('ltj@tempdima', getfield(s, key))
758 get_box_dim_common(key, getlist(s), l_dir)
761 setdimen('ltj@tempdima', 0)
763 tex.sprint(cat_lp, '\\ltj@tempdima')
766 luatexja.direction.get_box_dim = get_box_dim
768 -- return value: (changed dimen of box itself?)
769 local scan_dimen, scan_int = luatexja.token.scan_dimen, luatexja.token.scan_int
770 local scan_keyword = luatexja.token.scan_keyword
771 local function set_box_dim_common(key, s, l_dir)
772 local s_dir, wh = get_box_dir(s, dir_yoko)
773 s_dir = s_dir%dir_math_mod
774 if s_dir ~= l_dir then
776 wh = create_dir_whatsit(getlist(s), 'set_box_dim', s_dir)
777 setfield(s, 'head', wh)
780 local dnh = getfield(wh, 'value')
781 for x in traverse(dnh) do
782 if has_attr(x, attr_dir)%dir_node_auto==l_dir then
787 db = create_dir_node(s, s_dir, l_dir, true)
788 setfield(db, 'next', dnh)
789 setfield(wh, 'value',to_node(db))
791 setfield(db, key, scan_dimen())
794 setfield(s, key, scan_dimen())
796 -- change dimension of dir_nodes which are created "automatically"
798 = getfield(s,'width'), getfield(s, 'height'), getfield(s, 'depth')
799 for x in traverse(getfield(wh, 'value')) do
800 local x_dir = has_attr(x, attr_dir)
801 if x_dir<dir_node_manual then
802 local info = dir_node_aux[s_dir][x_dir%dir_node_auto]
803 setfield(x, 'width', info.width(bw,bh,bd))
804 setfield(x, 'height', info.height(bw,bh,bd))
805 setfield(x, 'depth', info.depth(bw,bh,bd))
812 local function set_box_dim(key)
813 local s = getbox(scan_int()); scan_keyword('=')
815 local l_dir = (get_dir_count())%dir_math_mod
817 local b_dir = get_box_dir(s,dir_yoko)
818 if b_dir<dir_node_auto then
819 set_box_dim_common(key, s, l_dir)
820 elseif b_dir%dir_math_mod == l_dir then
822 setfield(s, key, scan_dimen())
823 if b_dir<dir_node_manual then
824 set_attr(s, attr_dir, b_dir%dir_node_auto + dir_node_manual)
827 local sid, b = getid(s), getlist(s)
828 local info = dir_node_aux[get_box_dir(b,dir_yoko)%dir_math_mod][b_dir%dir_node_auto]
830 = getfield(b,'width'), getfield(b, 'height'), getfield(b, 'depth')
832 = getfield(s,'width'), getfield(s, 'height'), getfield(s, 'depth')
833 if set_box_dim_common(key, b, l_dir) and b_dir<dir_node_manual then
834 -- re-calculate dimension of s, if s is created "automatically"
835 if b_dir<dir_node_manual then
836 setfield(s, 'width', info.width(bw,bh,bd))
837 setfield(s, 'height', info.height(bw,bh,bd))
838 setfield(s, 'depth', info.depth(bw,bh,bd))
844 luatexja.direction.set_box_dim = set_box_dim
848 local getbox = tex.getbox
849 local function get_register_dir(n)
853 local b_dir = get_box_dir(s, dir_yoko)
854 if b_dir<dir_node_auto then
857 local b_dir = get_box_dir(
858 node_next(node_next(node_next(getlist(s)))), dir_yoko)
865 luatexja.direction.get_register_dir = get_register_dir
869 local getbox, setbox, copy_list = tex.getbox, tex.setbox, Dnode.copy_list
871 function luatexja.direction.raise_box()
872 start_time_measure('box_primitive_hook')
873 local list_dir = get_dir_count()
874 local s = getbox('ltj@afbox')
876 local sd = to_direct(s)
877 local box_dir = get_box_dir(sd, dir_yoko)
878 if box_dir%dir_math_mod ~= list_dir then
881 to_node(copy_list(make_dir_whatsit(sd, sd, list_dir, 'box_move')))
882 -- copy_list しないとリストの整合性が崩れる……?
886 stop_time_measure('box_primitive_hook')
890 -- PACKED の hbox から文字を取り出す
891 -- luatexja.jfmglue.check_box などで使用
893 local function glyph_from_packed(h)
895 return (getid(b)==id_kern or (getid(b)==id_whatsit and getsubtype(b)==sid_save) )
896 and node_next(node_next(node_next(b))) or b
898 luatexja.direction.glyph_from_packed = glyph_from_packed
903 local id_adjust = node.id('adjust')
904 function luatexja.direction.check_adjust_direction()
905 start_time_measure('box_primitive_hook')
906 local list_dir = get_adjust_dir_count()
907 local a = tex_nest[tex_nest.ptr].tail
908 local ad = to_direct(a)
909 if a and getid(ad)==id_adjust then
910 local adj_dir = get_box_dir(ad)
911 if list_dir~=adj_dir then
914 'Direction Incompatible',
915 "\\vadjust's argument and outer vlist must have same direction.")
919 stop_time_measure('box_primitive_hook')
925 local id_ins = node.id('ins')
926 local id_rule = node.id('rule')
927 function luatexja.direction.populate_insertion_dir_whatsit()
928 start_time_measure('box_primitive_hook')
929 local list_dir = get_dir_count()
930 local a = tex_nest[tex_nest.ptr].tail
931 local ad = to_direct(a)
932 if a and getid(ad)==id_ins then
933 local h = getfield(ad, 'head')
934 if getid(h)==id_whatsit and
935 getsubtype(h)==sid_user and getfield(h, 'user_id')==DIR then
936 local n = h; h = node_remove(h,h)
939 for box_rule in traverse(h) do
940 if getid(box_rule)<id_rule then
941 h = insert_before(h, box_rule, dir_pool[list_dir]())
944 ensure_tex_attr(attr_dir, 0)
945 setfield(ad, 'head', h)
947 stop_time_measure('box_primitive_hook')
953 local split_dir_whatsit
954 local function dir_adjust_vpack(h, gc)
955 start_time_measure('direction_vpack')
956 local hd = to_direct(h)
957 if gc=='split_keep' then
958 -- supply dir_whatsit
959 hd = create_dir_whatsit_vbox(hd, gc)
960 split_dir_whatsit = hd
961 elseif gc=='split_off' then
962 for bh in traverse_id(id_whatsit, hd) do
963 if getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
964 ltjs.list_dir = has_attr(bh, attr_dir); break
969 -- if bh and getid(bh)==id_whatsit
970 -- and getsubtype(bh)==sid_user and getfield(bh, 'user_id')==DIR then
971 -- ltjs.list_dir = has_attr(bh, attr_dir); break
973 -- bh = node_next(bh)
975 if split_dir_whatsit then
976 -- adjust direction of 'split_keep'
977 set_attr(split_dir_whatsit, attr_dir, ltjs.list_dir)
979 split_dir_whatsit=nil
980 elseif gc=='preamble' then
981 split_dir_whatsit=nil
984 hd = process_dir_node(create_dir_whatsit_vbox(hd, gc), gc)
985 split_dir_whatsit=nil
987 stop_time_measure('direction_vpack')
990 ltjb.add_to_callback('vpack_filter',
992 'ltj.direction', 10000)
996 -- supply direction whatsit to the main vertical list "of the next page"
997 local function dir_adjust_pre_output(h, gc)
998 return to_node(create_dir_whatsit_vbox(to_direct(h), gc))
1000 ltjb.add_to_callback('pre_output_filter',
1001 dir_adjust_pre_output,
1002 'ltj.direction', 10000)
1004 function luatexja.direction.remove_end_whatsit()
1005 local h=tex.lists.page_head
1006 if h and (not h.next) and
1007 h.id==id_whatsit and h.subtype==sid_user and
1008 h.user_id == DIR then
1009 tex.lists.page_head = nil
1017 local function dir_adjust_buildpage(info)
1019 local head = to_direct(tex.lists.contrib_head)
1021 head = make_dir_whatsit(head,
1025 tex.lists.contrib_head = to_node(head)
1029 ltjb.add_to_callback('buildpage_filter',
1030 dir_adjust_buildpage,
1031 'ltj.direction', 10000)
1034 -- finalize (executed just before \shipout)
1035 -- we supply correct pdfsavematrix nodes etc. inside dir_node
1037 local finalize_inner
1038 local function finalize_dir_node(db,new_dir)
1039 local b = getlist(db)
1041 local w = getfield(b, 'width')
1042 local h = getfield(b, 'height')
1043 local d = getfield(b, 'depth')
1044 local dn_w = getfield(db, 'width')
1045 local dn_h = getfield(db, 'height')
1046 local dn_d = getfield(db, 'depth')
1047 local db_head, db_tail
1048 for _,v in ipairs(dir_node_aux
1049 [get_box_dir(b, dir_yoko)%dir_math_mod][new_dir][getid(b)]) do
1050 local cmd, arg, nn = v[1], v[2]
1052 nn = node_new(id_kern)
1053 setfield(nn, 'kern', arg(w, h, d, dn_w, dn_h, dn_d))
1054 elseif cmd=='whatsit' then
1055 nn = node_new(id_whatsit, arg)
1056 elseif cmd=='rotate' then
1057 nn = node_new(id_whatsit, sid_matrix)
1058 setfield(nn, 'data', arg)
1059 elseif cmd=='box' then
1060 nn = b; setfield(b, 'next', nil)
1061 setfield(nn, 'shift', arg(w, h, d, dn_w, dn_h, dn_d))
1064 insert_after(db_head, db_tail, nn)
1067 setfield(db, 'head', nn)
1068 db_head, db_tail = nn, nn
1073 tex.setattribute(attr_dir, dir_yoko)
1074 local shipout_temp = node_new(id_hlist)
1075 tex.setattribute(attr_dir, 0)
1077 finalize_inner = function (box)
1078 for n in traverse(getlist(box)) do
1079 local nid = getid(n)
1080 if (nid==id_hlist or nid==id_vlist) then
1081 local ndir = get_box_dir(n, dir_yoko)
1082 if ndir>=dir_node_auto then -- n is dir_node
1083 finalize_dir_node(n, ndir%dir_math_mod)
1090 local getbox = tex.getbox
1091 local setbox, copy = Dnode.setbox, Dnode.copy
1092 local lua_mem_kb = 0
1093 function luatexja.direction.finalize()
1094 local a = to_direct(tex.getbox("AtBeginShipoutBox"))
1095 local a_dir = get_box_dir(a, dir_yoko)
1096 if a_dir~=dir_yoko then
1097 local b = create_dir_node(a, a_dir, dir_yoko, false)
1098 setfield(b, 'head', a); a = b
1100 setfield(shipout_temp, 'head', a)
1101 finalize_inner(shipout_temp)
1102 setbox('global', "AtBeginShipoutBox", copy(getlist(shipout_temp)))
1103 setfield(shipout_temp, 'head',nil)
1106 --local m = collectgarbage('count')
1107 --if m>lua_mem_kb+20480 then
1108 -- collectgarbage(); lua_mem_kb = collectgarbage('count')
1110 --print('Lua Memory Usage', lua_mem_kb)