4 luatexja.load_module 'base'; local ltjb = luatexja.base
5 luatexja.load_module 'jfont'; local ltjf = luatexja.jfont
6 luatexja.load_module 'jfmglue'; local ltjj = luatexja.jfmglue
7 luatexja.load_module 'stack'; local ltjs = luatexja.stack
8 luatexja.load_module 'direction'; local ltjd = luatexja.direction
9 luatexja.load_module 'lineskip'; local ltjl = luatexja.lineskip
10 luatexja.adjust = luatexja.adjust or {}
12 local to_node = node.direct.tonode
13 local to_direct = node.direct.todirect
15 local setfield = node.direct.setfield
16 local setglue = luatexja.setglue
17 local getfield = node.direct.getfield
18 local getlist = node.direct.getlist
19 local getid = node.direct.getid
20 local getfont = node.direct.getfont
21 local getsubtype = node.direct.getsubtype
23 local node_traverse_id = node.direct.traverse_id
24 local node_new = node.direct.new
25 local node_next = node.direct.getnext
26 local node_free = node.direct.free
27 local node_prev = node.direct.getprev
28 local node_tail = node.direct.tail
29 local has_attr = node.direct.has_attribute
30 local set_attr = node.direct.set_attribute
31 local insert_after = node.direct.insert_after
33 local id_glyph = node.id 'glyph'
34 local id_kern = node.id 'kern'
35 local id_hlist = node.id 'hlist'
36 local id_glue = node.id 'glue'
37 local id_whatsit = node.id 'whatsit'
38 local id_penalty = node.id 'penalty'
39 local attr_icflag = luatexbase.attributes['ltj@icflag']
40 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
41 local lang_ja = luatexja.lang_ja
43 local ltjf_font_metric_table = ltjf.font_metric_table
44 local ipairs, pairs = ipairs, pairs
46 local PACKED = luatexja.icflag_table.PACKED
47 local LINEEND = luatexja.icflag_table.LINEEND
48 local FROM_JFM = luatexja.icflag_table.FROM_JFM
49 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
50 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
51 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
52 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
56 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
57 get_attr_icflag = function(p)
58 return (has_attr(p, attr_icflag) or 0) % PROCESSED_BEGIN_FLAG
62 local priority_num = { 0, 0 }
63 local at2pr = { {}, {} }
64 local at2pr_st, at2pr_sh = at2pr[1], at2pr[2]
66 local priority_table = {{},{}}
67 luatexja.adjust.priority_table = priority_table
69 local function cmp(a,b) return a[1]>b[1] end -- 大きいほうが先!
70 local function make_priority_table(glue_sign)
71 for i,_ in pairs(tmp) do tmp[i]=nil end
72 if glue_sign==2 then -- shrink
73 for i=0,63 do tmp[#tmp+1] = { (i%8)-4, FROM_JFM+i } end
75 for i=0,63 do tmp[#tmp+1] = { math.floor(i/8)-4, FROM_JFM+i } end
77 local pt = priority_table[glue_sign]
78 tmp[#tmp+1] = { pt[2]/10, XKANJI_SKIP }
79 tmp[#tmp+1] = { pt[2]/10, XKANJI_SKIP_JFM }
80 tmp[#tmp+1] = { pt[1]/10, KANJI_SKIP }
81 tmp[#tmp+1] = { pt[1]/10, KANJI_SKIP_JFM }
82 tmp[#tmp+1] = { pt[3]/10, -1 }
84 local a, m, n = at2pr[glue_sign], 10000000, 0
86 if tmp[i][1]<m then n,m = n+1,tmp[i][1] end
90 priority_num[glue_sign] = n
91 setmetatable(a, {__index = function () return o end })
93 luatexja.adjust.make_priority_table = make_priority_table
96 -- box 内で伸縮された glue の合計値を計算
98 local total_stsh = {{},{}}
99 local total_st, total_sh = total_stsh[1], total_stsh[2]
100 local get_total_stretched
102 local dimensions = node.direct.dimensions
103 function get_total_stretched(p)
104 -- return value: <補正値(sp)>
105 local ph = getlist(p)
106 if not ph then return 0 end
107 for i,_ in pairs(total_st) do total_st[i]=nil; total_sh[i]=nil end
108 for i=1,priority_num[1] do total_st[i]=0 end
109 for i=1,priority_num[2] do total_sh[i]=0 end
110 for i=0,4 do total_st[i*65536]=0; total_sh[i*65536]=0 end
111 for q in node_traverse_id(id_glue, ph) do
112 local a = getfield(q, 'stretch_order')
114 local b = at2pr_st[get_attr_icflag(q)];
115 total_st[b] = total_st[b]+getfield(q, 'stretch')
117 total_st[a*65536] = total_st[a]+getfield(q, 'stretch')
118 local a = getfield(q, 'shrink_order')
120 local b = at2pr_sh[get_attr_icflag(q)];
121 total_sh[b] = total_sh[b]+getfield(q, 'shrink')
123 total_sh[a*65536] = total_sh[a]+getfield(q, 'shrink')
125 for i=4,1,-1 do if total_st[i*65536]~=0 then total_st.order=i; break end; end
126 if not total_st.order then
127 total_st.order, total_st[-65536] = -1,0.1 -- dummy
129 for i=4,1,-1 do if total_sh[i*65536]~=0 then total_sh.order=i; break end; end
130 if not total_sh.order then
131 total_sh.order, total_sh[-65536] = -1,0.1 -- dummy
133 return getfield(p,'width') - dimensions(ph)
137 -- step 1: 行末に kern を挿入(句読点,中点用)
139 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
140 local function aw_step1(p, total)
141 local head = getlist(p)
142 local x = node_tail(head); if not x then return total, false end
144 x = node_prev(x); if not x then return total, false end
145 local xi, xc = getid(x)
147 while xi==id_penalty do
148 x = node_prev(x); if not x then return total, false end
151 if (total>0 and total_st.order>0) or (total<0 and total_sh.order>0) then
152 -- 無限大のグルーで処理が行われているときは処理中止.
155 if xi == id_glyph and getfield(x, 'lang')==lang_ja then
158 elseif xi == id_hlist and get_attr_icflag(x) == PACKED then
160 xc = ltjd_glyph_from_packed(x)
161 while getid(xc) == id_whatsit do xc = node_next(xc) end -- これはなんのために?
163 return total, false-- それ以外は対象外.
165 local eadt = ltjf_font_metric_table[getfont(xc)]
166 .char_type[has_attr(xc, attr_jchar_class) or 0].end_adjust
170 local eadt_ratio = {}
171 for i, v in ipairs(eadt) do
174 eadt_ratio[i] = {i, t/total_st[65536*total_st.order], t, v}
176 eadt_ratio[i] = {i, t/total_sh[65536*total_sh.order], t, v}
179 table.sort(eadt_ratio,
182 local at, bt = abs(a[i]), abs(b[i])
183 if at~=bt then return at<bt end
187 if eadt[eadt_ratio[1][1]]~=0 then
188 local kn = node_new(id_kern, 1)
189 setfield(kn, 'kern', eadt[eadt_ratio[1][1]]); set_attr(kn, attr_icflag, LINEEND)
190 insert_after(head, x, kn)
191 return eadt_ratio[1][3], true
198 local min, max = math.min, math.max
199 local function aw_step1_last(p, total)
200 local head = getlist(p)
201 local x = node_tail(head); if not x then return total, false end
203 local pf = node_prev(x); if not x then return total, false end
204 if getid(pf) ~= id_glue or getsubtype(pf) ~= 15 then return total, false end
205 x = node_prev(node_prev(pf))
206 local xi, xc = getid(x)
207 if xi == id_glyph and getfield(x, 'lang')==lang_ja then
210 elseif xi == id_hlist and get_attr_icflag(x) == PACKED then
212 xc = ltjd_glyph_from_packed(x)
213 while getid(xc) == id_whatsit do xc = node_next(xc) end -- これはなんのために?
215 return total, false-- それ以外は対象外.
217 -- 続行条件1:無限の伸縮度を持つグルーは \parfillskipのみ
218 if total>0 and total_st.order>0 then
219 if total_st.order ~= getfield(pf, 'stretch_order') then return total, false end
220 if total_st[total_st.order*65536] ~= getfield(pf, 'stretch') then return total, false end
221 for i=total_st.order-1, 1, -1 do
222 if total_st[i*65536] ~= 0 then return total, false end
225 if total<0 and total_sh.order>0 then
226 if total_sh.order ~= getfield(pf, 'shrink_order') then return total, false end
227 if total_sh[total_sh.order*65536] ~= getfield(pf, 'shrink') then return total, false end
228 for i=total_sh.order-1, 1, -1 do
229 if total_sh[i*65536] ~= 0 then return total, false end
232 local eadt = ltjf_font_metric_table[getfont(xc)]
233 .char_type[has_attr(xc, attr_jchar_class) or 0].end_adjust
237 -- 続行条件2: min(eadt[1], 0)<= \parfillskip <= max(eadt[#eadt], 0)
238 local pfw = getfield(pf, 'width')
239 + (total>0 and getfield(pf, 'stretch') or -getfield(pf, 'shrink')) *getfield(p, 'glue_set')
240 if pfw<min(0,eadt[1]) or max(0,eadt[#eadt])<pfw then return total, false end
241 -- \parfillskip を 0 にする
242 total = total + getfield(pf, 'width')
243 total_st.order, total_sh.order = 0, 0
244 if getfield(pf, 'stretch_order')==0 then
245 local i = at2pr_st[-1]
246 total_st[0] = total_st[0] - getfield(pf, 'stretch')
247 total_st[i] = total_st[i] - getfield(pf, 'stretch')
248 total_st.order = (total_st[0]==0) and -1 or 0
250 if getfield(pf, 'shrink_order')==0 then
251 local i = at2pr_sh[-1]
252 total_sh[0] = total_sh[0] - getfield(pf, 'shrink')
253 total_sh[i] = total_sh[i] - getfield(pf, 'shrink')
254 total_sh.order = (total_sh[0]==0) and -1 or 0
256 setfield(pf, 'subtype', 1); setglue(pf)
257 local eadt_ratio = {}
258 for i, v in ipairs(eadt) do
261 eadt_ratio[i] = {i, t/total_st[65536*total_st.order], t, v}
263 eadt_ratio[i] = {i, t/total_sh[65536*total_sh.order], t, v}
266 table.sort(eadt_ratio,
269 local at, bt = abs(a[i]), abs(b[i])
270 if at~=bt then return at<bt end
274 if eadt[eadt_ratio[1][1]]~=0 then
275 local kn = node_new(id_kern, 1)
276 setfield(kn, 'kern', eadt[eadt_ratio[1][1]]); set_attr(kn, attr_icflag, LINEEND)
277 insert_after(head, x, kn)
278 return eadt_ratio[1][3], true
285 -- step 2: 行中の glue を変える
286 local aw_step2, aw_step2_dummy
288 local node_hpack = node.direct.hpack
289 local function repack(p)
290 local f = node_hpack(getlist(p), getfield(p, 'width'), 'exactly')
291 setfield(f, 'head', nil)
292 setfield(p, 'glue_set', getfield(f, 'glue_set'))
293 setfield(p, 'glue_order', getfield(f, 'glue_order'))
294 setfield(p, 'glue_sign', getfield(f, 'glue_sign'))
298 function aw_step2_dummy(p, _, added_flag)
299 if added_flag then return repack(p) end
302 local function clear_stretch(p, ind, ap, name)
303 for q in node_traverse_id(id_glue, getlist(p)) do
304 local f = ap[get_attr_icflag(q)]
306 setfield(q, name..'_order', 0); setfield(q, name, 0)
311 local function set_stretch(p, after, before, ind, ap, name)
313 local ratio = after/before
314 for q in node_traverse_id(id_glue, getlist(p)) do
315 local f = ap[get_attr_icflag(q)]
316 if (f==ind) and getfield(q, name..'_order')==0 then
317 setfield(q, name, getfield(q, name)*ratio)
323 function aw_step2(p, total, added_flag)
324 local name = (total>0) and 'stretch' or 'shrink'
325 local id = (total>0) and 1 or 2
326 local res = total_stsh[id]
327 local pnum = priority_num[id]
328 if total==0 or res.order > 0 then
329 -- もともと伸縮の必要なしか,残りの伸縮量は無限大
330 if added_flag then return repack(p) end
334 if total <= res[i] then
337 clear_stretch(p, j, a, name)
339 set_stretch(p, total, res[i], i, a, name); break
341 total = total - res[i]
347 -- step 1': lineend=extended の場合(行分割時に考慮))
348 local insert_lineend_kern
350 local insert_before = node.direct.insert_before
351 local KINSOKU = luatexja.icflag_table.KINSOKU
352 insert_lineend_kern = function (head, nq, np, Bp)
354 local eadt = nq.met.char_type[nq.class].end_adjust
355 if not eadt then return end
357 local x = node_new(id_kern, 1)
358 setfield(x, 'kern', eadt[1]); set_attr(x, attr_icflag, LINEEND)
359 insert_before(head, np.first, x)
361 local eadt_num = #eadt
363 local x = node_new(id_penalty)
364 setfield(x, 'penalty', 0); set_attr(x, attr_icflag, KINSOKU)
365 insert_before(head, np.first, x); Bp[#Bp+1] = x
366 local x = node_new(id_kern, 1)
367 setfield(x, 'kern', eadt[i]-eadt[i-1]); set_attr(x, attr_icflag, LINEEND)
368 insert_before(head, np.first, x)
370 if eadt_num>1 or eadt[1]~=0 then
371 local x = node_new(id_penalty)
372 setfield(x, 'penalty', 0); set_attr(x, attr_icflag, KINSOKU)
373 insert_before(head, np.first, x); Bp[#Bp+1] = x
374 local x = node_new(id_kern, 1)
375 setfield(x, 'kern', -eadt[eadt_num]); set_attr(x, attr_icflag, LINEEND)
376 insert_before(head, np.first, x)
377 local x = node_new(id_penalty)
378 setfield(x, 'penalty', 10000); set_attr(x, attr_icflag, KINSOKU)
379 insert_before(head, np.first, x); Bp[#Bp+1] = x
387 local myaw_step1, myaw_step2, myaw_step1_last
388 local dummy = function(p,t,n) return t, false end
389 local ltjs_fast_get_stack_skip = ltjs.fast_get_stack_skip
390 function adjust_width(head)
391 if not head then return head end
393 for p in node_traverse_id(id_hlist, to_direct(head)) do
395 myaw_step2(last_p, myaw_step1(last_p, get_total_stretched(last_p)))
400 myaw_step2(last_p, myaw_step1_last(last_p, get_total_stretched(last_p)))
405 local function enable_cb(status_le, status_pr, status_lp, status_ls)
406 if (status_le>0 or status_pr>0) and (not is_reg) then
407 ltjb.add_to_callback('post_linebreak_filter',
408 adjust_width, 'Adjust width',
409 luatexbase.priority_in_callback('post_linebreak_filter', 'ltj.lineskip')-1)
411 elseif is_reg and (status_le==0 and status_pr==0) then
412 luatexbase.remove_from_callback('post_linebreak_filter', 'Adjust width')
416 if not luatexbase.in_callback('luatexja.adjust_jfmglue', 'luatexja.adjust') then
417 ltjb.add_to_callback('luatexja.adjust_jfmglue', insert_lineend_kern, 'luatexja.adjust')
419 myaw_step1, myaw_step1_last = dummy, aw_step1_last
422 myaw_step1, myaw_step1_last = dummy, dummy
424 myaw_step1, myaw_step1_last = aw_step1, aw_step1_last
426 if luatexbase.in_callback('luatexja.adjust_jfmglue', 'luatexja.adjust') then
427 luatexbase.remove_from_callback('luatexja.adjust_jfmglue', 'luatexja.adjust')
430 myaw_step2 = (status_pr>0) and aw_step2 or aw_step2_dummy
431 luatexja.lineskip.setting(
432 status_lp>0 and 'profile' or 'dummy',
433 status_ls>0 and 'step' or 'dummy'
436 local function disable_cb() -- only for compatibility
439 luatexja.adjust.enable_cb=enable_cb
440 luatexja.adjust.disable_cb=disable_cb
443 luatexja.unary_pars.adjust = function(t)
444 return is_reg and 1 or 0
447 -- ----------------------------------
450 local max, ins, sort = math.max, table.insert, table.sort
451 local function insert(package, ind, d, b, e)
452 local bound = package[2]
453 bound[b], bound[e]=true, true
454 ins(package[1], {b,e,[ind]=d})
456 local function flatten(package)
457 local bd = {} for i,_ in pairs(package[2]) do ins(bd,{i}) end
458 sort(bd, function (a,b) return a[1]<b[1] end)
459 local bdc=#bd; local t = package[1]
460 sort(t, function (a,b) return a[1]<b[1] end)
463 while bd[bdi][1]<t[i][1] do bdi=bdi+1 end
465 while j<bdc and bd[j+1][1]<=t[i][2] do
466 for k,w in pairs(t[i]) do
468 bd[j][k]=bd[j][k] and max(bd[j][k],w) or w
474 package[2]=nil; package[1]=nil; package.flatten, package.insert=nil, nil
478 init_range = function ()
479 return {{},{}, insert=insert, flatten=flatten}
483 -- -----------------------------------
484 luatexja.adjust.step_factor = 0.5
485 luatexja.unary_pars.linestep_factor = function(t)
486 return luatexja.adjust.step_factor
488 luatexja.adjust.profile_hgap_factor = 1
489 luatexja.unary_pars.profile_hgap_factor = function(t)
490 return luatexja.adjust.profile_hgap_factor
493 local insert = table.insert
494 local rangedimensions, max = node.direct.rangedimensions, math.max
495 local function profile_inner(box, range, ind, vmirrored, adj)
496 local w_acc, d_before = getfield(box,'shift'), 0
497 local x = getlist(box); local xn = node_next(x)
500 if xn then w, h, d= rangedimensions(box,x,xn)
501 else w, h, d= rangedimensions(box,x) end
502 if vmirrored then h=d end
503 local w_new = w_acc + w
505 range:insert(ind, h, w_acc-adj, w_new)
507 range:insert(ind, h, w_new-adj, w_acc)
509 w_acc = w_new; x = xn; if x then xn = node_next(x) end
512 function ltjl.p_profile(before, after, mirrored, bw)
514 = init_range(), luatexja.adjust.profile_hgap_factor*tex.lineskip.width
515 profile_inner(before, range, 3, true, tls)
516 profile_inner(after, range, 4, mirrored, tls)
517 range = range:flatten()
519 local dmax, d, hmax, h, lmin = 0, 0, 0, 0, 1/0
520 for i,v in ipairs(range) do
521 d, h = (v[3] or 0), (v[4] or 0)
522 if d>dmax then dmax=d end
523 if h>hmax then hmax=h end
524 if bw-h-d<lmin then lmin=bw-h-d end
526 if lmin==1/0 then lmin = bw end
528 bw - lmin - getfield(before, 'depth')
529 - getfield(after, mirrored and 'depth' or 'height')
535 local ltja = luatexja.adjust
536 local copy_glue = ltjl.copy_glue
537 local floor, max = math.floor, math.max
538 function ltjl.l_step(dist, g, adj, normal, bw, loc)
539 if loc=='alignment' then
540 return ltjl.l_dummy(dist, g, adj, normal, bw, loc)
542 if dist < tex.lineskiplimit then
543 local f = max(1, bw*ltja.step_factor)
544 copy_glue(g, tex.baselineskip, 1, normal - f * floor((dist-tex.lineskip.width)/f))
546 copy_glue(g, tex.baselineskip, 2, normal)