X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=src%2Fltj-setwidth.lua;h=0d684ef37077d7a8e2a0757c27230b218e83c10d;hb=bf31041b7c358d12f4a50fa1df10a8ca3ff28e83;hp=7fd68043adf51b02dd5aa97a4fd88829f6a9bc27;hpb=349262f15b7609ebb3166077bf73562a30eb7327;p=luatex-ja%2Fluatexja.git

diff --git a/src/ltj-setwidth.lua b/src/ltj-setwidth.lua
index 7fd6804..0d684ef 100644
--- a/src/ltj-setwidth.lua
+++ b/src/ltj-setwidth.lua
@@ -1,28 +1,47 @@
 --
--- src/ltj-setwidth.lua
+-- ltj-setwidth.lua
 --
 
 luatexja.load_module('base');      local ltjb = luatexja.base
+luatexja.load_module('stack');     local ltjs = luatexja.stack
 luatexja.load_module('jfont');     local ltjf = luatexja.jfont
+luatexja.load_module('direction'); local ltjd = luatexja.direction
+luatexja.load_module('lotf_aux');  local ltju = luatexja.lotf_aux
 
-local Dnode = node.direct or node
-local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
-local getfield = (Dnode ~= node) and Dnode.getfield or function(n, i) return n[i] end
-local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
-local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
-local getlist = (Dnode ~= node) and Dnode.getlist or function(n) return n.head end
-local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
-local getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
-
-local node_traverse = Dnode.traverse
-local node_new = Dnode.new
-local node_remove = luatexja.Dnode_remove -- Dnode.remove
-local node_tail = Dnode.tail
-local node_next = (Dnode ~= node) and Dnode.getnext or node.next
-local has_attr = Dnode.has_attribute
-local set_attr = Dnode.set_attribute
-local node_insert_before = Dnode.insert_before
-local node_insert_after = Dnode.insert_after
+local setfield = node.direct.setfield
+local getfield = node.direct.getfield
+local getid = node.direct.getid
+local getfont = node.direct.getfont
+local getlist = node.direct.getlist
+local getchar = node.direct.getchar
+local getsubtype = node.direct.getsubtype
+local getwidth = node.direct.getwidth or function(n) return getfield(n,'width') end
+local getdepth = node.direct.getdepth or function(n) return getfield(n,'depth') end
+local getwhd = node.direct.getwhd or function(n)
+  return getfield(n,'width'), getfield(n,'height'),getfield(n,'depth') end
+
+local setwhd = node.direct.setwhd or function(n,w,h,d)
+  setfield(n,'width',w); setfield(n,'height',h); setfield(n,'depth',d) end
+local setchar = node.direct.setchar or function(n,c) setfield(n,'char',c) end
+local setnext = node.direct.setnext or function(n,c) setfield(n,'next',c) end
+local setdir = node.direct.setdir or function(n,c) setfield(n,'dir',c) end
+local setkern = node.direct.setkern or function(n,c) setfield(n,'kern',c) end
+local setoffsets = node.direct.setoffsets or function(n,x,y)
+  setfield(n,'xoffset',x); setfield(n,'yoffset',y)  end
+local getoffsets = node.direct.getoffsets or function(n)
+  return getfield(n,'xoffset'), getfield(n,'yoffset')  end
+
+local node_traverse_id = node.direct.traverse_id
+local node_traverse = node.direct.traverse
+local node_new = node.direct.new
+local node_copy = node.direct.copy
+local node_remove = node.direct.remove
+local node_tail = node.direct.tail
+local node_next = node.direct.getnext
+local has_attr = node.direct.has_attribute
+local set_attr = node.direct.set_attribute
+local node_insert_before = node.direct.insert_before
+local node_insert_after = node.direct.insert_after
 local round = tex.round
 
 local id_glyph = node.id('glyph')
@@ -31,22 +50,25 @@ local id_hlist = node.id('hlist')
 local id_vlist = node.id('vlist')
 local id_rule = node.id('rule')
 local id_math = node.id('math')
+local id_whatsit = node.id('whatsit')
+local sid_save = node.subtype('pdf_save')
+local sid_restore = node.subtype('pdf_restore')
+local sid_matrix = node.subtype('pdf_setmatrix')
+local dir_tate = luatexja.dir_table.dir_tate
 
-local attr_jchar_class = luatexbase.attributes['ltj@charclass']
-local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
-local attr_yablshift = luatexbase.attributes['ltj@yablshift']
 local attr_ykblshift = luatexbase.attributes['ltj@ykblshift']
+local attr_tkblshift = luatexbase.attributes['ltj@tkblshift']
 local attr_icflag = luatexbase.attributes['ltj@icflag']
+local attr_vert_ori = luatexbase.attributes['ltj@vert@ori']
 
-local ltjf_font_metric_table = ltjf.font_metric_table
+local ltjf_font_extra_info = ltjf.font_extra_info
 
 local PACKED       = luatexja.icflag_table.PACKED
 local PROCESSED    = luatexja.icflag_table.PROCESSED
-local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
-local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
 
 local get_pr_begin_flag
 do
+   local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
    local floor = math.floor
    get_pr_begin_flag = function (p)
       local i = has_attr(p, attr_icflag) or 0
@@ -54,119 +76,239 @@ do
    end
 end
 
-local head, dir
 local ltjw = {} --export
 luatexja.setwidth = ltjw
 
-luatexbase.create_callback("luatexja.set_width", "data", 
-			   function (fstable, fmtable, jchar_class) 
-			      return fstable 
+luatexbase.create_callback("luatexja.set_width", "data",
+			   function (fstable, fmtable, char_data)
+			      return fstable
 			   end)
 local call_callback = luatexbase.call_callback
 
-local fshift =  { down = 0, left = 0}
+local fshift =  { down = 0, left = 0 }
+
+local min, max, floor, abs = math.min, math.max, math.floor, math.abs
 
--- mode: true iff p will be always encapsuled by a hbox
-local function capsule_glyph(p, met, class)
-   local char_data = met.char_type[class]
-   if not char_data then return node_next(p) end
-   local fwidth, pwidth = char_data.width, getfield(p, 'width')
-   fwidth = (fwidth ~= 'prop') and fwidth or pwidth
+local rule_subtype = (status.luatex_version>=85) and 3 or 0
+
+-- 和文文字の位置補正（横）
+local function capsule_glyph_yoko(p, met, char_data, head, dir)
+   if not char_data then return node_next(p), head, p end
    fshift.down = char_data.down; fshift.left = char_data.left
-   fshift = call_callback("luatexja.set_width", fshift, met, class)
-   local fheight, fdepth = char_data.height, char_data.depth
-   if (pwidth ~= fwidth or getfield(p, 'height') ~= fheight or getfield(p, 'depth') ~= fdepth) then
-      local y_shift
-         = - getfield(p, 'yoffset') + (has_attr(p,attr_ykblshift) or 0)
-      local q
-      head, q = node_remove(head, p)
-      setfield(p, 'yoffset', -fshift.down); setfield(p, 'next', nil)
-      setfield(p, 'xoffset', getfield(p, 'xoffset') + char_data.align*(fwidth-pwidth) - fshift.left)
-      local box = node_new(id_hlist)
-      setfield(box, 'width', fwidth)
-      setfield(box, 'height', fheight)
-      setfield(box, 'depth', fdepth)
-      setfield(box, 'head', p)
-      setfield(box, 'shift', y_shift)
-      setfield(box, 'dir', dir)
-      set_attr(box, attr_icflag, PACKED + get_pr_begin_flag(p))
-      head = q and node_insert_before(head, q, box) 
-               or node_insert_after(head, node_tail(head), box)
-      return q
-   else
-      set_attr(p, attr_icflag, PROCESSED + get_pr_begin_flag(p))
-      setfield(p, 'xoffset', getfield(p, 'xoffset') - fshift.left)
-      setfield(p, 'yoffset', getfield(p, 'yoffset') 
-		  - (has_attr(p, attr_ykblshift) or 0) - fshift.down)
-      return node_next(p)
+   fshift = call_callback("luatexja.set_width", fshift, met, char_data)
+   local kbl = has_attr(p, attr_ykblshift) or 0
+   --
+   -- f*: whd specified in JFM
+   local pwidth, pheight,pdepth = getwhd(p)
+   local fwidth = char_data.width or pwidth
+   local fheight= char_data.height or pheight
+   local fdepth = char_data.depth or pdepth
+   if pwidth==fwidth then
+      -- 補正後glyph node は ht: p.height - kbl - down, dp: p.depth + min(0, kbl+down) を持つ
+      -- 設定されるべき寸法: ht: fheight - kbl, dp: fdepth + kbl
+      local ht_diff = fheight + fshift.down - pheight
+      local dp_diff = fdepth  + kbl - pdepth - min(kbl + fshift.down, 0)
+      if ht_diff == 0 and dp_diff ==0 then -- offset only
+         set_attr(p, attr_icflag, PROCESSED)
+         local xo, yo = getoffsets(p)
+	 setoffsets(p, xo - fshift.left, yo - kbl - fshift.down)
+	 return node_next(p), head, p
+      elseif ht_diff >= 0 and dp_diff >=0 then -- rule
+	 local box = node_new(id_rule,rule_subtype)
+         local xo, yo = getoffsets(p)
+	 setoffsets(p, xo, yo - kbl - fshift.down)
+	 setwhd(box, 0, fheight - kbl, fdepth + kbl)
+	 setdir(box, dir)
+	 set_attr(box, attr_icflag, PACKED)
+	 set_attr(p, attr_icflag, PROCESSED)
+	 head = p and node_insert_before(head, p, box)
+	    or node_insert_after(head, node_tail(head), box)
+	 return node_next(p), head, p, box
+      end
+   end
+
+   local q
+   head, q = node_remove(head, p)
+   if char_data.round_threshold then
+      local frac = abs(pwidth / fwidth); 
+      local quot = floor(frac)
+      if frac-quot <char_data.round_threshold then fwidth = fwidth * quot end
    end
+   local xo, yo = getoffsets(p)
+   setoffsets(p, xo + char_data.align*(fwidth-pwidth) - fshift.left,
+              yo - fshift.down);
+   setnext(p, nil)
+   local box = node_new(id_hlist)
+   setwhd(box, fwidth, fheight, fdepth)
+   setfield(box, 'head', p)
+   setfield(box, 'shift', kbl)
+   setdir(box, dir)
+   set_attr(box, attr_icflag, PACKED)
+   head = q and node_insert_before(head, q, box)
+      or node_insert_after(head, node_tail(head), box)
+   return q, head, box
 end
-luatexja.setwidth.capsule_glyph = capsule_glyph
 
-local function capsule_glyph_math(p, met, class)
-   local char_data = met.char_type[class]
+luatexja.setwidth.capsule_glyph_yoko = capsule_glyph_yoko
+
+-- 和文文字の位置補正（縦）
+-- UTR#50 で R もしくは Tr と指定されているが，縦組用グリフがないもの
+local function capsule_glyph_tate_rot(p, met, char_data, head, dir, asc)
+   fshift.down = char_data.down; fshift.left = char_data.left
+   fshift = call_callback("luatexja.set_width", fshift, met, char_data)
+   local kbl = has_attr(p, attr_tkblshift) or 0
+   -- f*: whd specified in JFM
+   local pwidth, pheight,pdepth = getwhd(p)
+   local fwidth = char_data.width or pwidth
+   local fheight= char_data.height or pheight
+   local fdepth = char_data.depth or pdepth
+   local q
+   head, q = node_remove(head, p)
+   local xo, yo = getoffsets(p)
+   setoffsets(p, xo + char_data.align*(fwidth-pwidth) - fshift.left,
+              yo - fshift.down - asc);
+   setnext(p, nil)
+   local box = node_new(id_hlist)
+   setwhd(box, fwidth, fheight, fdepth)
+   setfield(box, 'head', p)
+   setfield(box, 'shift', kbl)
+   setdir(box, dir)
+   set_attr(box, attr_icflag, PACKED)
+   head = q and node_insert_before(head, q, box)
+      or node_insert_after(head, node_tail(head), box)
+   return q, head, box
+end
+
+local font_getfont = font.getfont
+local get_ascender, get_descender = ltju.get_ascender, ltju.get_descender
+local function capsule_glyph_tate(p, met, char_data, head, dir)
+   if not char_data then return node_next(p), head end
+   local fwidth, pwidth, ascender = char_data.width
+   do
+      local pf, pc = getfont(p), getchar(p)
+      local feir = ltjf_font_extra_info[pf]
+      if feir and feir.rotation and met.vert_activated then
+	 if feir.rotation[pc] and (has_attr(p, attr_vert_ori) or 0)<=0 then
+	    return capsule_glyph_tate_rot(p, met, char_data, head, dir, 
+              0.5*(get_ascender(pf)-get_descender(pf)))
+	 end
+      end
+      pwidth, ascender = feir.vheight[pc]*met.size, feir.vorigin[pc]*met.size
+   end
+   fwidth = fwidth or pwidth
+   fshift.down = char_data.down; fshift.left = char_data.left
+   fshift = call_callback("luatexja.set_width", fshift, met, char_data)
+   local fheight = char_data.height or 0
+   local fdepth  = char_data.depth or 0
+   local xo, yo = getoffsets(p)
+   local y_shift = xo + (has_attr(p,attr_tkblshift) or 0)
+   local q
+   head, q = node_remove(head, p)
+   local box = node_new(id_hlist)
+   setwhd(box, fwidth, fheight, fdepth)
+   setfield(box, 'shift', y_shift)
+   setdir(box, dir)
+
+   setoffsets(p, -fshift.down,
+              yo -(ascender + char_data.align*(fwidth-pwidth) - fshift.left) )
+   local ws = node_new(id_whatsit, sid_save)
+   local wm = node_new(id_whatsit, sid_matrix)
+   setfield(wm, 'data', '0 1 -1 0')
+   local pwnh = -round(0.5*getwidth(p))
+   local k2 = node_new(id_kern, 1); setkern(k2, pwnh)
+   local k3 = node_new(id_kern, 1); setkern(k3, -getwidth(p)-pwnh)
+   local wr = node_new(id_whatsit, sid_restore)
+   setfield(box, 'head', ws)
+   setnext(ws, wm);  setnext(wm, k2);
+   setnext(k2, p);   setnext(p,  k3);
+   setnext(k3, wr);
+
+   set_attr(box, attr_icflag, PACKED)
+   head = q and node_insert_before(head, q, box)
+      or node_insert_after(head, node_tail(head), box)
+   return q, head, box
+end
+luatexja.setwidth.capsule_glyph_tate = capsule_glyph_tate
+
+local function capsule_glyph_math(p, met, char_data)
    if not char_data then return nil end
-   local fwidth, pwidth = char_data.width, getfield(p, 'width')
-   fwidth = (fwidth ~= 'prop') and fwidth or pwidth
+   local fwidth, pwidth = char_data.width, getwidth(p)
+   fwidth = fwidth or pwidth
    fshift.down = char_data.down; fshift.left = char_data.left
-   fshift = call_callback("luatexja.set_width", fshift, met, class)
+   fshift = call_callback("luatexja.set_width", fshift, met, char_data)
    local fheight, fdepth = char_data.height, char_data.depth
-   local y_shift, ca
-      = - getfield(p, 'yoffset') + (has_attr(p,attr_ykblshift) or 0), char_data.align
+   local y_shift
+      = - getfield(p, 'yoffset') + (has_attr(p,attr_ykblshift) or 0)
    setfield(p, 'yoffset', -fshift.down)
    setfield(p, 'xoffset', getfield(p, 'xoffset') + char_data.align*(fwidth-pwidth) - fshift.left)
-   local box = node_new(id_hlist); 
-   setfield(box, 'width', fwidth)
-   setfield(box, 'height', fheight)
-   setfield(box, 'depth', fdepth)
+   local box = node_new(id_hlist);
+   setwhd(box, fwidth, fheight, fdepth)
    setfield(box, 'head', p)
    setfield(box, 'shift', y_shift)
-   setfield(box, 'dir', tex.mathdir)
-   set_attr(box, attr_icflag, PACKED + get_pr_begin_flag(p))
+   setdir(box, tex.mathdir)
+   set_attr(box, attr_icflag, PACKED)
    return box
 end
 luatexja.setwidth.capsule_glyph_math = capsule_glyph_math
 
-function luatexja.setwidth.set_ja_width(ahead, adir)
-   local p = ahead; head  = p; dir = adir or 'TLT'
-   local m = false -- is in math mode?
-   while p do
+-- 数式の位置補正
+function luatexja.setwidth.apply_ashift_math(head, last, attr_ablshift)
+   for p in node_traverse(head) do
       local pid = getid(p)
-      if (pid==id_glyph) 
-      and ((has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG)<=0 then
-         local pf = getfont(p)
-	 if pf == has_attr(p, attr_curjfnt) then
-	    p = capsule_glyph(p, ltjf_font_metric_table[pf], 
-			      has_attr(p, attr_jchar_class))
-	 else
-	    set_attr(p, attr_icflag, PROCESSED + get_pr_begin_flag(p))
+      if p==last then
+	 return
+      elseif (has_attr(p, attr_icflag) or 0) ~= PROCESSED then
+	 if pid==id_hlist or pid==id_vlist then
+	    setfield(p, 'shift', getfield(p, 'shift') +  (has_attr(p,attr_ablshift) or 0)) 
+	 elseif pid==id_rule then
+	    local v = has_attr(p,attr_ablshift) or 0
+	    setfield(p, 'height', getfield(p, 'height')-v)
+	    setfield(p, 'depth', getdepth(p)+v)
+	    set_attr(p, attr_icflag, PROCESSED)
+	 elseif pid==id_glyph then
+	    -- 欧文文字; 和文文字は pid == id_hlist の場合で処理される
+	    -- (see conv_jchar_to_hbox_A in ltj-math.lua)
 	    setfield(p, 'yoffset',
-		     getfield(p, 'yoffset') - (has_attr(p,attr_yablshift) or 0))
-	    p = node_next(p)
-	 end
-      elseif pid==id_math then
-	 m = (getsubtype(p)==0); p = node_next(p)
-      else
-	 if m then
-            -- 数式の位置補正
-	    if pid==id_hlist or pid==id_vlist then
-               if (has_attr(p, attr_icflag) or 0) ~= PROCESSED then
-                  setfield(p, 'shift', getfield(p, 'shift') +  (has_attr(p,attr_yablshift) or 0))
-               end
-	    elseif pid==id_rule then
-	       if (has_attr(p, attr_icflag) or 0) ~= PROCESSED then
-		  local v = has_attr(p,attr_yablshift) or 0
-                  setfield(p, 'height', getfield(p, 'height')-v)
-                  setfield(p, 'depth', getfield(p, 'depth')+v)
-		  set_attr(p, attr_icflag, PROCESSED + get_pr_begin_flag(p))
-	       end
-	    end
+		     getfield(p, 'yoffset') - (has_attr(p,attr_ablshift) or 0))
 	 end
-	 p = node_next(p)
+         set_attr(p, attr_icflag, PROCESSED)
       end
    end
-   -- adjust attr_icflag
-   tex.setattribute('global', attr_icflag, 0)
-   return head
 end
 
+-- discretionary の位置補正
+do
+   local attr_yablshift = luatexbase.attributes['ltj@yablshift']
+   local attr_tablshift = luatexbase.attributes['ltj@tablshift']
+   local attr_ablshift
+   local disc, tex_dir
+   local function ashift_disc_inner(field)
+      local head = getfield(disc, field)
+      if not head then return end
+      local y_adjust, node_depth, adj_depth = 0, 0, 0
+      for lp in node_traverse_id(id_glyph, head) do
+	 y_adjust = has_attr(lp,attr_ablshift) or 0
+	 local ld = getdepth(lp)
+	 node_depth = max(ld + min(y_adjust, 0), node_depth)
+	 adj_depth = (y_adjust>0) and max(ld + y_adjust, adj_depth) or adj_depth
+	 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
+      end
+      if adj_depth>node_depth then
+	 local r = node_new(id_rule,rule_subtype)
+	 setwhd(r, 0, 0, adj_depth); setdir(r, tex_dir)
+	 set_attr(r, attr_icflag, PROCESSED)
+	 if field=='post' then
+	    node_insert_after(head, head, r)
+	 else
+	    setfield(disc, field, (node_insert_before(head, head, r)))
+	 end
+      end
+   end
+   function luatexja.setwidth.apply_ashift_disc(d, is_dir_tate, dir)
+      attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
+      disc, tex_dir = d, dir
+      ashift_disc_inner('pre')
+      ashift_disc_inner('post')
+      ashift_disc_inner('replace')
+   end
+end