--
--- luatexja/setwidth.lua
+-- src/ltj-setwidth.lua
--
-luatexbase.provides_module({
- name = 'luatexja.setwidth',
- date = '2012/07/19',
- version = '0.2',
- 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 round = tex.round
+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 id_kern = node.id('kern')
local ltjf_font_metric_table = ltjf.font_metric_table
-local PACKED = 2
-local PROCESSED = 11
-local IC_PROCESSED = 12
-local PROCESSED_BEGIN_FLAG = 32
+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 floor = math.floor
- function get_pr_begin_flag(p)
- return floor((has_attr(p, attr_icflag) or 0)
- /PROCESSED_BEGIN_FLAG)*PROCESSED_BEGIN_FLAG
+ get_pr_begin_flag = function (p)
+ local i = has_attr(p, attr_icflag) or 0
+ return i - i%PROCESSED_BEGIN_FLAG
end
end
-local get_pr_begin_flag = get_pr_begin_flag
-head = nil
+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 char_data = met.size_cache.char_type[class]
+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 = (char_data.width ~= 'prop') and char_data.width or p.width
- local fheight, fdepth = char_data.height, char_data.depth
+ 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)
- if (mode or p.width ~= fwidth or p.height ~= fheight or p.depth ~= fdepth) then
- local y_shift, total = - p.yoffset + (has_attr(p,attr_ykblshift) or 0), fwidth - p.width
- local q; head, q = node.remove(head, p)
- p.yoffset, p.next = -fshift.down, nil
- if total ~= 0 and char_data.align~='left' then
- p.xoffset = p.xoffset - fshift.left
- + (((char_data.align=='right') and total) or round(total*0.5))
- else
- p.xoffset = p.xoffset - fshift.left
- 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);
- box.width, box.height, box.depth = fwidth, fheight, fdepth
- box.head, box.shift, box.dir = p, y_shift, (dir or 'TLT')
- box.glue_set, box.glue_order = 0, 0
+ 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))
- p.xoffset = p.xoffset - fshift.left
- p.yoffset = p.yoffset - (has_attr(p, attr_ykblshift) or 0) - fshift.down
+ 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
-function set_ja_width(ahead, dir)
- local p = ahead; head = ahead
+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 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)
+ local pid = getid(p)
+ if (pid==id_glyph)
and ((has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG)<=0 then
- if p.font == has_attr(p, attr_curjfnt) then
- p = capsule_glyph(p, dir, false, ltjf_font_metric_table[p.font],
+ 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))
- p.yoffset = p.yoffset - (has_attr(p,attr_yablshift) or 0); p = node_next(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)
tex.setattribute('global', attr_icflag, 0)
return head
end
+
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