local setfield = node.direct.setfield
local setglue = luatexja.setglue
+local getglue = luatexja.getglue
local getfield = node.direct.getfield
local is_zero_glue = node.direct.is_zero_glue
local getlist = node.direct.getlist
local id_hlist = node.id('hlist')
local id_glue = node.id('glue')
local id_whatsit = node.id('whatsit')
+local id_penalty = node.id('penalty')
local attr_icflag = luatexbase.attributes['ltj@icflag']
local attr_jchar_class = luatexbase.attributes['ltj@charclass']
local lang_ja = luatexja.lang_ja
local round, pairs = tex.round, pairs
local PACKED = luatexja.icflag_table.PACKED
+local LINEEND = luatexja.icflag_table.LINEEND
local FROM_JFM = luatexja.icflag_table.FROM_JFM
local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
local total_stsh = {{},{}}
local total_st, total_sh = total_stsh[1], total_stsh[2]
-local function get_total_stretched(p, line)
+local get_total_stretched
+do
+local dimensions = node.direct.dimensions
+function get_total_stretched(p)
-- return value: <補正値(sp)>
- local go, gf, gs
- = getfield(p, 'glue_order'), getfield(p, 'glue_set'), getfield(p, 'glue_sign')
+ local ph = getlist(p)
+ if not ph then return 0 end
for i,_ in pairs(total_st) do total_st[i]=nil; total_sh[i]=nil end
for i=1,#priority_table do
total_st[priority_table[i]]=0; total_sh[priority_table[i]]=0;
end
for i=0,4 do total_st[i*65536]=0; total_sh[i*65536]=0 end
- total_st[-1]=0; total_sh[-1]=0;
- for q in node_traverse_id(id_glue, getlist(p)) do
- local a = getfield(q, 'stretch_order')
+ total_st[-1]=0; total_sh[-1]=0;
+ for q in node_traverse_id(id_glue, ph) do
+ local a = getfield(q, 'stretch_order')
if a>0 then a=a*65536 else
total_st[0] = total_st[0]+getfield(q, 'stretch')
a = get_attr_icflag(q)
end
total_sh[a] = total_sh[a]+getfield(q, 'shrink')
end
- for i=4,0,-1 do if total_st[i*65536]~=0 then total_st.order=i; break end; end
- for i=4,0,-1 do if total_sh[i*65536]~=0 then total_sh.order=i; break end; end
- if gs==0 then
- return 0, gf
- else
- return round((3-2*gs)*total_stsh[gs][go*65536]*gf), gf
+ for i=4,1,-1 do if total_st[i*65536]~=0 then total_st.order=i; break end; end
+ if not total_st.order then
+ total_st.order, total_st[-65536] = -1,0.1 -- dummy
+ end
+ for i=4,1,-1 do if total_sh[i*65536]~=0 then total_sh.order=i; break end; end
+ if not total_sh.order then
+ total_sh.order, total_sh[-65536] = -1,0.1 -- dummy
end
+ return getfield(p,'width') - dimensions(ph)
+end
end
local function clear_stretch(p, ic, name)
local f = get_attr_icflag(q)
if (f == ic) or ((ic ==KANJI_SKIP) and (f == KANJI_SKIP_JFM))
or ((ic ==XKANJI_SKIP) and (f == XKANJI_SKIP_JFM)) then
- if getfield(q, name..'_order')==0 then
+ if getfield(q, name..'_order')==0 then
setfield(q, name, getfield(q, name)*ratio)
end
end
-- step 1: 行末に kern を挿入（句読点，中点用）
local abs = math.abs
local ltjd_glyph_from_packed = ltjd.glyph_from_packed
-local function aw_step1(p, total, ntr)
+local function aw_step1(p, total)
local head = getlist(p)
local x = node_tail(head); if not x then return total, false end
-- x: \rightskip
x = node_prev(x); if not x then return total, false end
local xi, xc = getid(x)
- if xi == id_glue and getsubtype(x) == 15 then
- -- 段落最終行のときは，\penalty10000 \parfillskip が入るので，
- -- その前の node が本来の末尾文字となる
- x = node_prev(node_prev(x)); xi = getid(x)
+ -- x may be penalty
+ while xi==id_penalty do
+ x = node_prev(x); if not x then return total, false end
+ xi = getid(x)
+ end
+ if (total>0 and total_st.order>0) or (total<0 and total_sh.order>0) then
+ -- 無限大のグルーで処理が行われているときは処理中止．
+ return total, false
end
if xi == id_glyph and getfield(x, 'lang')==lang_ja then
-- 和文文字
end
return a[4]<b[4]
end)
- --print('min', eadt[eadt_ratio[1][1]], eadt_ratio[1][3])
if eadt[eadt_ratio[1][1]]~=0 then
- local kn = node_new(id_kern)
- setfield(kn, 'kern', eadt[eadt_ratio[1][1]]); set_attr(kn, attr_icflag, FROM_JFM)
+ local kn = node_new(id_kern, 1)
+ setfield(kn, 'kern', eadt[eadt_ratio[1][1]]); set_attr(kn, attr_icflag, LINEEND)
insert_after(head, x, kn)
return eadt_ratio[1][3], true
else
end
end
+-- step 1 最終行用
+local min, max = math.min, math.max
+local function aw_step1_last(p, total)
+ local head = getlist(p)
+ local x = node_tail(head); if not x then return total, false end
+ -- x: \rightskip
+ pf = node_prev(x); if not x then return total, false end
+ if getid(pf) ~= id_glue or getsubtype(pf) ~= 15 then return total, false end
+ x = node_prev(node_prev(pf)); xi = getid(x)
+ local xi, xc = getid(x)
+ if xi == id_glyph and getfield(x, 'lang')==lang_ja then
+ -- 和文文字
+ xc = x
+ elseif xi == id_hlist and get_attr_icflag(x) == PACKED then
+ -- packed JAchar
+ xc = ltjd_glyph_from_packed(x)
+ while getid(xc) == id_whatsit do xc = node_next(xc) end -- これはなんのために？
+ else
+ return total, false-- それ以外は対象外．
+ end
+ -- 続行条件1：無限の伸縮度を持つグルーは \parfillskipのみ
+ if total>0 and total_st.order>0 then
+ if total_st.order ~= getfield(pf, 'stretch_order') then return total, false end
+ if total_st[total_st.order*65536] ~= getfield(pf, 'stretch') then return total, false end
+ for i=total_st.order-1, 1, -1 do
+ if total_st[i*65536] ~= 0 then return total, false end
+ end
+ end
+ if total<0 and total_sh.order>0 then
+ if total_sh.order ~= getfield(pf, 'shrink_order') then return total, false end
+ if total_sh[total_sh.order*65536] ~= getfield(pf, 'shrink') then return total, false end
+ for i=total_sh.order-1, 1, -1 do
+ if total_sh[i*65536] ~= 0 then return total, false end
+ end
+ end
+ local eadt = ltjf_font_metric_table[getfont(xc)]
+ .char_type[has_attr(xc, attr_jchar_class) or 0].end_adjust
+ if not eadt then
+ return total, false
+ end
+ -- 続行条件2: min(eadt[1], 0)<= \parfillskip <= max(eadt[#eadt], 0)
+ local pfw = getfield(pf, 'width')
+ + (total>0 and getfield(pf, 'stretch') or -getfield(pf, 'shrink')) *getfield(p, 'glue_set')
+ if pfw<min(0,eadt[1]) or max(0,eadt[#eadt])<pfw then return total, false end
+ -- \parfillskip を 0 にする
+ total = total + getfield(pf, 'width')
+ total_st.order, total_sh.order = 0, 0
+ if getfield(pf, 'stretch_order')==0 then
+ total_st[0] = total_st[0] - getfield(pf, 'stretch')
+ total_st[-1] = total_st[-1] - getfield(pf, 'stretch')
+ total_st.order = (total_st[0]==0) and -1 or 0
+ end
+ if getfield(pf, 'shrink_order')==0 then
+ total_sh[0] = total_sh[0] - getfield(pf, 'shrink')
+ total_sh[-1] = total_sh[-1] - getfield(pf, 'shrink')
+ total_sh.order = (total_sh[0]==0) and -1 or 0
+ end
+ setfield(pf, 'subtype', 1); setglue(pf)
+ local eadt_ratio = {}
+ for i, v in ipairs(eadt) do
+ local t = total - v
+ if t>0 then
+ eadt_ratio[i] = {i, t/total_st[65536*total_st.order], t, v}
+ else
+ eadt_ratio[i] = {i, t/total_sh[65536*total_sh.order], t, v}
+ end
+ end
+ table.sort(eadt_ratio,
+ function (a,b)
+ for i=2,4 do
+ local at, bt = abs(a[i]), abs(b[i])
+ if at~=bt then return at<bt end
+ end
+ return a[4]<b[4]
+ end)
+ if eadt[eadt_ratio[1][1]]~=0 then
+ local kn = node_new(id_kern, 1)
+ setfield(kn, 'kern', eadt[eadt_ratio[1][1]]); set_attr(kn, attr_icflag, LINEEND)
+ insert_after(head, x, kn)
+ return eadt_ratio[1][3], true
+ else
+ return total, false
+ end
+end
+
+
-- step 2: 行中の glue を変える
+local function aw_step2_dummy(p, _, added_flag)
+ if added_flag then -- 行末に kern 追加したので，それによる補正
+ local f = node_hpack(getlist(p), getfield(p, 'width'), 'exactly')
+ setfield(f, 'head', nil)
+ setfield(p, 'glue_set', getfield(f, 'glue_set'))
+ setfield(p, 'glue_order', getfield(f, 'glue_order'))
+ setfield(p, 'glue_sign', getfield(f, 'glue_sign'))
+ node_free(f)
+ return
+ end
+end
local function aw_step2(p, total, added_flag)
local name = (total>0) and 'stretch' or 'shrink'
local res = total_stsh[(total>0) and 1 or 2]
return
end
end
- total = math.abs(total)
+ total = abs(total)
if total <= res[-1] then -- 和文処理グルー以外で足りる
for _,v in pairs(priority_table) do clear_stretch(p, v, name) end
local f = node_hpack(getlist(p), getfield(p, 'width'), 'exactly')
setfield(p, 'glue_sign', getfield(f, 'glue_sign'))
node_free(f)
else
- total = total - res[-1];
+ total = total - res[-1];
for i = 1, #priority_table do
local v = priority_table[i]
if total <= res[v] then
end
end
-
-local ltjs_fast_get_stack_skip = ltjs.fast_get_stack_skip
-local function adjust_width(head)
- if not head then return head end
- local line = 1
- for p in node_traverse_id(id_hlist, to_direct(head)) do
- line = line + 1
- aw_step2(p, aw_step1(p, get_total_stretched(p, line)))
+-- step 1': lineend=extended の場合（行分割時に考慮））
+local insert_lineend_kern
+do
+ local insert_before = node.direct.insert_before
+ local KINSOKU = luatexja.icflag_table.KINSOKU
+ function insert_lineend_kern(head, nq, np, Bp)
+ if nq.met then
+ local eadt = nq.met.char_type[nq.class].end_adjust
+ if not eadt then return end
+ if eadt[1]~=0 then
+ local x = node_new(id_kern, 1)
+ setfield(x, 'kern', eadt[1]); set_attr(x, attr_icflag, LINEEND)
+ insert_before(head, np.first, x)
+ end
+ local eadt_num = #eadt
+ for i=2,eadt_num do
+ local x = node_new(id_penalty)
+ setfield(x, 'penalty', 0); set_attr(x, attr_icflag, KINSOKU)
+ insert_before(head, np.first, x); Bp[#Bp+1] = x
+ local x = node_new(id_kern, 1)
+ setfield(x, 'kern', eadt[i]-eadt[i-1]); set_attr(x, attr_icflag, LINEEND)
+ insert_before(head, np.first, x)
+ end
+ if eadt_num>1 or eadt[1]~=0 then
+ local x = node_new(id_penalty)
+ setfield(x, 'penalty', 0); set_attr(x, attr_icflag, KINSOKU)
+ insert_before(head, np.first, x); Bp[#Bp+1] = x
+ local x = node_new(id_kern, 1)
+ setfield(x, 'kern', -eadt[eadt_num]); set_attr(x, attr_icflag, LINEEND)
+ insert_before(head, np.first, x)
+ local x = node_new(id_penalty)
+ setfield(x, 'penalty', 10000); set_attr(x, attr_icflag, KINSOKU)
+ insert_before(head, np.first, x); Bp[#Bp+1] = x
+ end
+ end
end
- return to_node(head)
end
+local adust_width
do
- luatexja.adjust = luatexja.adjust or {}
+ local myaw_atep1, myaw_step2, myaw_step1_last
+ local dummy = function(p,t,n) return t, false end
+ local ltjs_fast_get_stack_skip = ltjs.fast_get_stack_skip
+ function adjust_width(head)
+ if not head then return head end
+ local last_p
+ for p in node_traverse_id(id_hlist, to_direct(head)) do
+ if last_p then
+ myaw_step2(last_p, myaw_step1(last_p, get_total_stretched(last_p)))
+ end
+ last_p = p
+ end
+ if last_p then
+ myaw_step2(last_p, myaw_step1_last(last_p, get_total_stretched(last_p)))
+ end
+ return to_node(head)
+ end
local is_reg = false
- function luatexja.adjust.enable_cb()
- if not is_reg then
+ function enable_cb(status_le, status_pr)
+ if (status_le>0 or status_pr>0) and (not is_reg) then
luatexbase.add_to_callback('post_linebreak_filter',
adjust_width, 'Adjust width', 100)
is_reg = true
- end
- end
- function luatexja.adjust.disable_cb()
- if is_reg then
+ elseif is_reg and (status_le==0 and status_pr==0) then
luatexbase.remove_from_callback('post_linebreak_filter', 'Adjust width')
is_reg = false
end
+ if status_le==2 then
+ if not luatexbase.in_callback('luatexja.adjust_jfmglue', 'luatexja.adjust') then
+ luatexbase.add_to_callback('luatexja.adjust_jfmglue', insert_lineend_kern, 'luatexja.adjust')
+ end
+ myaw_step1, myaw_step1_last = dummy, aw_step1_last
+ else
+ if status_le==0 then
+ myaw_step1, myaw_step1_last = dummy, dummy
+ else
+ myaw_step1, myaw_step1_last = aw_step1, aw_step1_last
+ end
+ if luatexbase.in_callback('luatexja.adjust_jfmglue', 'luatexja.adjust') then
+ luatexbase.remove_from_callback('luatexja.adjust_jfmglue', 'luatexja.adjust')
+ end
+ end
+ myaw_step2 = (status_pr>0) and aw_step2 or aw_step2_dummy
+ end
+ function disable_cb() -- only for compatibility
+ enable_cs(0)
end
+ luatexja.adjust = luatexja.adjust or {enable_cb=enable_cb, disable_cb=disable_cb}
end
luatexja.unary_pars.adjust = function(t)
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