--
--- luatexja/setwidth.lua
+-- src/ltj-setwidth.lua
--
-luatexbase.provides_module({
- name = 'luatexja.setwidth',
- date = '2011/06/28',
- version = '0.1',
- description = '',
-})
-module('luatexja.setwidth', package.seeall)
-local err, warn, info, log = luatexbase.errwarinf(_NAME)
luatexja.load_module('base'); local ltjb = luatexja.base
luatexja.load_module('jfont'); local ltjf = luatexja.jfont
-local node_type = node.type
-local node_new = node.new
-local node_tail = node.tail
-local node_next = node.next
-local has_attr = node.has_attribute
-local set_attr = node.set_attribute
-local node_insert_before = node.insert_before
-local node_insert_after = node.insert_after
+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 = Dnode.remove
+local node_tail = Dnode.tail
+local node_next = Dnode.getnext
+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 round = tex.round
local id_glyph = node.id('glyph')
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_icflag = luatexbase.attributes['ltj@icflag']
-local attr_uniqid = luatexbase.attributes['ltj@uniqid']
local ltjf_font_metric_table = ltjf.font_metric_table
-local PACKED = 2
-
-char_data = {}
-head = nil
+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
--- return true if and only if p is a Japanese character node
-local function is_japanese_glyph_node(p)
- return p.font==has_attr(p, attr_curjfnt)
+local get_pr_begin_flag
+do
+ local floor = math.floor
+ get_pr_begin_flag = function (p)
+ local i = has_attr(p, attr_icflag) or 0
+ return i - i%PROCESSED_BEGIN_FLAG
+ 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
end)
+local call_callback = luatexbase.call_callback
local fshift = { down = 0, left = 0}
+
-- mode: true iff p will be always encapsuled by a hbox
-function capsule_glyph(p, dir, mode, met, class)
- local h, box, q, fwidth
- if char_data.width ~= 'prop' then
- fwidth = char_data.width
- else fwidth = p.width end
- local fheight = char_data.height
- local fdepth = char_data.depth
+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
fshift.down = char_data.down; fshift.left = char_data.left
- fshift = luatexbase.call_callback("luatexja.set_width", fshift, met, class)
--- local ti =
- p.xoffset= p.xoffset - fshift.left
- if mode or p.width ~= fwidth or p.height ~= fheight or p.depth ~= fdepth then
- local y_shift = - p.yoffset + (has_attr(p,attr_yablshift) or 0)
- p.yoffset = -fshift.down
- head, q = node.remove(head, p)
- local total = fwidth - p.width
- if total == 0 then
- h = p; p.next = nil
- else
- h = node_new(id_kern); h.subtype = 0
- if char_data.align=='right' then
- h.kern = total; p.next = nil; h.next = p
- elseif char_data.align=='middle' then
- h.kern = round(total*0.5); p.next = h
- h = node_new(id_kern); h.subtype = 0
- h.kern = total - round(total*0.5); h.next = p
- else -- left
- h.kern = total; p.next = h; h = p
- end
- end
- box = node_new(id_hlist);
- box.width = fwidth; box.height = fheight; box.depth = fdepth
- box.glue_set = 0; box.glue_order = 0; box.head = h
- box.shift = y_shift; box.dir = dir or 'TLT'
- set_attr(box, attr_icflag, PACKED)
- set_attr(box, attr_uniqid, has_attr(p, attr_uniqid) or 0)
- if q then
- head = node_insert_before(head, q, box)
- else
- head = node_insert_after(head, node_tail(head), box)
- end
+ 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, ca
+ = - getfield(p, 'yoffset') + (has_attr(p,attr_ykblshift) or 0), char_data.align
+ local q
+ head, q = node_remove(head, p)
+ setfield(p, 'yoffset', -fshift.down); setfield(p, 'next', nil)
+ ca = (ca~='left')
+ and -fshift.left + (((ca=='right') and fwidth-pwidth) or round((fwidth-pwidth)*0.5))
+ or -fshift.left
+ setfield(p, 'xoffset', getfield(p, 'xoffset') + ca)
+ 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
- p.yoffset = p.yoffset - (has_attr(p, attr_yablshift) or 0) - fshift.down
+ 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)
end
end
+luatexja.setwidth.capsule_glyph = capsule_glyph
+
+local function capsule_glyph_math(p, met, class)
+ local char_data = met.char_type[class]
+ if not char_data then return nil end
+ local fwidth, pwidth = char_data.width, getfield(p, 'width')
+ fwidth = (fwidth ~= 'prop') and fwidth or pwidth
+ 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
+ local y_shift, ca
+ = - getfield(p, 'yoffset') + (has_attr(p,attr_ykblshift) or 0), char_data.align
+ setfield(p, 'yoffset', -fshift.down)
+ if ca~='left' then
+ setfield(p, 'xoffset', getfield(p, 'xoffset') - fshift.left
+ + (((ca=='right') and fwidth - pwidth) or round((fwidth - pwidth)*0.5)))
+ else
+ setfield(p, 'xoffset', getfield(p, 'xoffset') - fshift.left)
+ end
+ 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', tex.mathdir)
+ set_attr(box, attr_icflag, PACKED + get_pr_begin_flag(p))
+ return box
+end
+luatexja.setwidth.capsule_glyph_math = capsule_glyph_math
-function set_ja_width(ahead, dir)
- local p = ahead; head = ahead
+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
- if p.id==id_glyph then
- if is_japanese_glyph_node(p) then
- local met = ltjf_font_metric_table[p.font]
- local class = has_attr(p, attr_jchar_class)
- char_data = ltjf.metrics[met.jfm].size_cache[met.size].char_type[class]
- if char_data then
- p = capsule_glyph(p, dir, false, met, class)
- else
- p = node_next(p)
- end
- else
- p.yoffset = p.yoffset - (has_attr(p,attr_yablshift) or 0); p = node_next(p)
+ 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))
+ setfield(p, 'yoffset',
+ getfield(p, 'yoffset') - (has_attr(p,attr_yablshift) or 0))
+ p = node_next(p)
end
- elseif p.id==id_math then
- m = (p.subtype==0); p = node_next(p)
+ elseif pid==id_math then
+ m = (getsubtype(p)==0); p = node_next(p)
else
if m then
- if p.id==id_hlist or p.id==id_vlist then
- p.shift = p.shift + (has_attr(p,attr_yablshift) or 0)
- elseif p.id==id_rule then
- local v = has_attr(p,attr_yablshift) or 0
- p.height = p.height - v; p.depth = p.depth + v
+ -- 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
end
p = node_next(p)
end
end
-- adjust attr_icflag
- tex.attribute[attr_icflag] = -(0x7FFFFFFF)
+ tex.setattribute('global', attr_icflag, 0)
return head
end
+
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