4 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
5 luatexja.load_module('jfmglue'); local ltjj = luatexja.jfmglue
6 luatexja.load_module('stack'); local ltjs = luatexja.stack
7 luatexja.load_module('direction'); local ltjd = luatexja.direction
8 luatexja.adjust = luatexja.adjust or {}
10 local to_node = node.direct.tonode
11 local to_direct = node.direct.todirect
13 local setfield = node.direct.setfield
14 local setglue = luatexja.setglue
15 local getfield = node.direct.getfield
16 local getlist = node.direct.getlist
17 local getid = node.direct.getid
18 local getfont = node.direct.getfont
19 local getsubtype = node.direct.getsubtype
21 local node_traverse_id = node.direct.traverse_id
22 local node_new = node.direct.new
23 local node_next = node.direct.getnext
24 local node_free = node.direct.free
25 local node_prev = node.direct.getprev
26 local node_tail = node.direct.tail
27 local has_attr = node.direct.has_attribute
28 local set_attr = node.direct.set_attribute
29 local insert_after = node.direct.insert_after
31 local id_glyph = node.id('glyph')
32 local id_kern = node.id('kern')
33 local id_hlist = node.id('hlist')
34 local id_glue = node.id('glue')
35 local id_whatsit = node.id('whatsit')
36 local id_penalty = node.id('penalty')
37 local attr_icflag = luatexbase.attributes['ltj@icflag']
38 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
39 local lang_ja = luatexja.lang_ja
41 local ltjf_font_metric_table = ltjf.font_metric_table
42 local ipairs, pairs = ipairs, pairs
44 local PACKED = luatexja.icflag_table.PACKED
45 local LINEEND = luatexja.icflag_table.LINEEND
46 local FROM_JFM = luatexja.icflag_table.FROM_JFM
47 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
48 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
49 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
50 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
54 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
55 get_attr_icflag = function(p)
56 return (has_attr(p, attr_icflag) or 0) % PROCESSED_BEGIN_FLAG
60 local priority_num = { 0, 0 }
61 local at2pr = { {}, {} }
62 local at2pr_st, at2pr_sh = at2pr[1], at2pr[2]
64 local priority_table = {{},{}}
65 luatexja.adjust.priority_table = priority_table
67 local function cmp(a,b) return a[1]>b[1] end -- 大きいほうが先!
68 local function make_priority_table(glue_sign)
69 for i,_ in pairs(tmp) do tmp[i]=nil end
70 if glue_sign==2 then -- shrink
71 for i=0,63 do tmp[#tmp+1] = { (i%8)-4, FROM_JFM+i } end
73 for i=0,63 do tmp[#tmp+1] = { math.floor(i/8)-4, FROM_JFM+i } end
75 local pt = priority_table[glue_sign]
76 tmp[#tmp+1] = { pt[2]/10, XKANJI_SKIP }
77 tmp[#tmp+1] = { pt[2]/10, XKANJI_SKIP_JFM }
78 tmp[#tmp+1] = { pt[1]/10, KANJI_SKIP }
79 tmp[#tmp+1] = { pt[1]/10, KANJI_SKIP_JFM }
80 tmp[#tmp+1] = { pt[3]/10, -1 }
82 local a, m, n = at2pr[glue_sign], 10000000, 0
84 if tmp[i][1]<m then n,m = n+1,tmp[i][1] end
88 priority_num[glue_sign] = n
89 setmetatable(a, {__index = function () return o end })
91 luatexja.adjust.make_priority_table = make_priority_table
94 -- box 内で伸縮された glue の合計値を計算
96 local total_stsh = {{},{}}
97 local total_st, total_sh = total_stsh[1], total_stsh[2]
98 local get_total_stretched
100 local dimensions = node.direct.dimensions
101 function get_total_stretched(p)
102 -- return value: <補正値(sp)>
103 local ph = getlist(p)
104 if not ph then return 0 end
105 for i,_ in pairs(total_st) do total_st[i]=nil; total_sh[i]=nil end
106 for i=1,priority_num[1] do total_st[i]=0 end
107 for i=1,priority_num[2] do total_sh[i]=0 end
108 for i=0,4 do total_st[i*65536]=0; total_sh[i*65536]=0 end
109 for q in node_traverse_id(id_glue, ph) do
110 local a = getfield(q, 'stretch_order')
112 local b = at2pr_st[get_attr_icflag(q)];
113 total_st[b] = total_st[b]+getfield(q, 'stretch')
115 total_st[a*65536] = total_st[a]+getfield(q, 'stretch')
116 local a = getfield(q, 'shrink_order')
118 local b = at2pr_sh[get_attr_icflag(q)];
119 total_sh[b] = total_sh[b]+getfield(q, 'shrink')
121 total_sh[a*65536] = total_sh[a]+getfield(q, 'shrink')
123 for i=4,1,-1 do if total_st[i*65536]~=0 then total_st.order=i; break end; end
124 if not total_st.order then
125 total_st.order, total_st[-65536] = -1,0.1 -- dummy
127 for i=4,1,-1 do if total_sh[i*65536]~=0 then total_sh.order=i; break end; end
128 if not total_sh.order then
129 total_sh.order, total_sh[-65536] = -1,0.1 -- dummy
131 return getfield(p,'width') - dimensions(ph)
135 -- step 1: 行末に kern を挿入(句読点,中点用)
137 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
138 local function aw_step1(p, total)
139 local head = getlist(p)
140 local x = node_tail(head); if not x then return total, false end
142 x = node_prev(x); if not x then return total, false end
143 local xi, xc = getid(x)
145 while xi==id_penalty do
146 x = node_prev(x); if not x then return total, false end
149 if (total>0 and total_st.order>0) or (total<0 and total_sh.order>0) then
150 -- 無限大のグルーで処理が行われているときは処理中止.
153 if xi == id_glyph and getfield(x, 'lang')==lang_ja then
156 elseif xi == id_hlist and get_attr_icflag(x) == PACKED then
158 xc = ltjd_glyph_from_packed(x)
159 while getid(xc) == id_whatsit do xc = node_next(xc) end -- これはなんのために?
161 return total, false-- それ以外は対象外.
163 local eadt = ltjf_font_metric_table[getfont(xc)]
164 .char_type[has_attr(xc, attr_jchar_class) or 0].end_adjust
168 local eadt_ratio = {}
169 for i, v in ipairs(eadt) do
172 eadt_ratio[i] = {i, t/total_st[65536*total_st.order], t, v}
174 eadt_ratio[i] = {i, t/total_sh[65536*total_sh.order], t, v}
177 table.sort(eadt_ratio,
180 local at, bt = abs(a[i]), abs(b[i])
181 if at~=bt then return at<bt end
185 if eadt[eadt_ratio[1][1]]~=0 then
186 local kn = node_new(id_kern, 1)
187 setfield(kn, 'kern', eadt[eadt_ratio[1][1]]); set_attr(kn, attr_icflag, LINEEND)
188 insert_after(head, x, kn)
189 return eadt_ratio[1][3], true
196 local min, max = math.min, math.max
197 local function aw_step1_last(p, total)
198 local head = getlist(p)
199 local x = node_tail(head); if not x then return total, false end
201 pf = node_prev(x); if not x then return total, false end
202 if getid(pf) ~= id_glue or getsubtype(pf) ~= 15 then return total, false end
203 x = node_prev(node_prev(pf)); xi = getid(x)
204 local xi, xc = getid(x)
205 if xi == id_glyph and getfield(x, 'lang')==lang_ja then
208 elseif xi == id_hlist and get_attr_icflag(x) == PACKED then
210 xc = ltjd_glyph_from_packed(x)
211 while getid(xc) == id_whatsit do xc = node_next(xc) end -- これはなんのために?
213 return total, false-- それ以外は対象外.
215 -- 続行条件1:無限の伸縮度を持つグルーは \parfillskipのみ
216 if total>0 and total_st.order>0 then
217 if total_st.order ~= getfield(pf, 'stretch_order') then return total, false end
218 if total_st[total_st.order*65536] ~= getfield(pf, 'stretch') then return total, false end
219 for i=total_st.order-1, 1, -1 do
220 if total_st[i*65536] ~= 0 then return total, false end
223 if total<0 and total_sh.order>0 then
224 if total_sh.order ~= getfield(pf, 'shrink_order') then return total, false end
225 if total_sh[total_sh.order*65536] ~= getfield(pf, 'shrink') then return total, false end
226 for i=total_sh.order-1, 1, -1 do
227 if total_sh[i*65536] ~= 0 then return total, false end
230 local eadt = ltjf_font_metric_table[getfont(xc)]
231 .char_type[has_attr(xc, attr_jchar_class) or 0].end_adjust
235 -- 続行条件2: min(eadt[1], 0)<= \parfillskip <= max(eadt[#eadt], 0)
236 local pfw = getfield(pf, 'width')
237 + (total>0 and getfield(pf, 'stretch') or -getfield(pf, 'shrink')) *getfield(p, 'glue_set')
238 if pfw<min(0,eadt[1]) or max(0,eadt[#eadt])<pfw then return total, false end
239 -- \parfillskip を 0 にする
240 total = total + getfield(pf, 'width')
241 total_st.order, total_sh.order = 0, 0
242 if getfield(pf, 'stretch_order')==0 then
243 local i = at2pr_st[-1]
244 total_st[0] = total_st[0] - getfield(pf, 'stretch')
245 total_st[i] = total_st[i] - getfield(pf, 'stretch')
246 total_st.order = (total_st[0]==0) and -1 or 0
248 if getfield(pf, 'shrink_order')==0 then
249 local i = at2pr_sh[-1]
250 total_sh[0] = total_sh[0] - getfield(pf, 'shrink')
251 total_sh[i] = total_sh[i] - getfield(pf, 'shrink')
252 total_sh.order = (total_sh[0]==0) and -1 or 0
254 setfield(pf, 'subtype', 1); setglue(pf)
255 local eadt_ratio = {}
256 for i, v in ipairs(eadt) do
259 eadt_ratio[i] = {i, t/total_st[65536*total_st.order], t, v}
261 eadt_ratio[i] = {i, t/total_sh[65536*total_sh.order], t, v}
264 table.sort(eadt_ratio,
267 local at, bt = abs(a[i]), abs(b[i])
268 if at~=bt then return at<bt end
272 if eadt[eadt_ratio[1][1]]~=0 then
273 local kn = node_new(id_kern, 1)
274 setfield(kn, 'kern', eadt[eadt_ratio[1][1]]); set_attr(kn, attr_icflag, LINEEND)
275 insert_after(head, x, kn)
276 return eadt_ratio[1][3], true
283 -- step 2: 行中の glue を変える
284 local aw_step2, aw_step2_dummy
286 local node_hpack = node.direct.hpack
287 local function repack(p)
288 local f = node_hpack(getlist(p), getfield(p, 'width'), 'exactly')
289 setfield(f, 'head', nil)
290 setfield(p, 'glue_set', getfield(f, 'glue_set'))
291 setfield(p, 'glue_order', getfield(f, 'glue_order'))
292 setfield(p, 'glue_sign', getfield(f, 'glue_sign'))
296 function aw_step2_dummy(p, _, added_flag)
297 if added_flag then return repack(p) end
300 local function clear_stretch(p, ind, ap, name)
301 for q in node_traverse_id(id_glue, getlist(p)) do
302 local f = ap[get_attr_icflag(q)]
304 setfield(q, name..'_order', 0)
310 local function set_stretch(p, after, before, ind, ap, name)
312 local ratio = after/before
313 for q in node_traverse_id(id_glue, getlist(p)) do
314 local f = ap[get_attr_icflag(q)]
315 if (f==ind) and getfield(q, name..'_order')==0 then
316 setfield(q, name, getfield(q, name)*ratio)
322 function aw_step2(p, total, added_flag)
323 local name = (total>0) and 'stretch' or 'shrink'
324 local id = (total>0) and 1 or 2
325 local res = total_stsh[id]
326 local pnum = priority_num[id]
327 if total==0 or res.order > 0 then
328 -- もともと伸縮の必要なしか,残りの伸縮量は無限大
329 if added_flag then return repack(p) end
333 if total <= res[i] then
336 clear_stretch(p, j, a, name)
338 set_stretch(p, total, res[i], i, a, name); break
340 total = total - res[i]
346 -- step 1': lineend=extended の場合(行分割時に考慮))
347 local insert_lineend_kern
349 local insert_before = node.direct.insert_before
350 local KINSOKU = luatexja.icflag_table.KINSOKU
351 function insert_lineend_kern(head, nq, np, Bp)
353 local eadt = nq.met.char_type[nq.class].end_adjust
354 if not eadt then return end
356 local x = node_new(id_kern, 1)
357 setfield(x, 'kern', eadt[1]); set_attr(x, attr_icflag, LINEEND)
358 insert_before(head, np.first, x)
360 local eadt_num = #eadt
362 local x = node_new(id_penalty)
363 setfield(x, 'penalty', 0); set_attr(x, attr_icflag, KINSOKU)
364 insert_before(head, np.first, x); Bp[#Bp+1] = x
365 local x = node_new(id_kern, 1)
366 setfield(x, 'kern', eadt[i]-eadt[i-1]); set_attr(x, attr_icflag, LINEEND)
367 insert_before(head, np.first, x)
369 if eadt_num>1 or eadt[1]~=0 then
370 local x = node_new(id_penalty)
371 setfield(x, 'penalty', 0); set_attr(x, attr_icflag, KINSOKU)
372 insert_before(head, np.first, x); Bp[#Bp+1] = x
373 local x = node_new(id_kern, 1)
374 setfield(x, 'kern', -eadt[eadt_num]); set_attr(x, attr_icflag, LINEEND)
375 insert_before(head, np.first, x)
376 local x = node_new(id_penalty)
377 setfield(x, 'penalty', 10000); set_attr(x, attr_icflag, KINSOKU)
378 insert_before(head, np.first, x); Bp[#Bp+1] = x
386 local myaw_atep1, myaw_step2, myaw_step1_last
387 local dummy = function(p,t,n) return t, false end
388 local ltjs_fast_get_stack_skip = ltjs.fast_get_stack_skip
389 function adjust_width(head)
390 if not head then return head end
392 for p in node_traverse_id(id_hlist, to_direct(head)) do
394 myaw_step2(last_p, myaw_step1(last_p, get_total_stretched(last_p)))
399 myaw_step2(last_p, myaw_step1_last(last_p, get_total_stretched(last_p)))
404 function enable_cb(status_le, status_pr)
405 if (status_le>0 or status_pr>0) and (not is_reg) then
406 luatexbase.add_to_callback('post_linebreak_filter',
407 adjust_width, 'Adjust width', 100)
409 elseif is_reg and (status_le==0 and status_pr==0) then
410 luatexbase.remove_from_callback('post_linebreak_filter', 'Adjust width')
414 if not luatexbase.in_callback('luatexja.adjust_jfmglue', 'luatexja.adjust') then
415 luatexbase.add_to_callback('luatexja.adjust_jfmglue', insert_lineend_kern, 'luatexja.adjust')
417 myaw_step1, myaw_step1_last = dummy, aw_step1_last
420 myaw_step1, myaw_step1_last = dummy, dummy
422 myaw_step1, myaw_step1_last = aw_step1, aw_step1_last
424 if luatexbase.in_callback('luatexja.adjust_jfmglue', 'luatexja.adjust') then
425 luatexbase.remove_from_callback('luatexja.adjust_jfmglue', 'luatexja.adjust')
428 myaw_step2 = (status_pr>0) and aw_step2 or aw_step2_dummy
430 function disable_cb() -- only for compatibility
433 luatexja.adjust.enable_cb=enable_cb
434 luatexja.adjust.disable_cb=disable_cb
437 luatexja.unary_pars.adjust = function(t)
438 return is_reg and 1 or 0