--
--- luatexja/setwidth.lua
+-- src/ltj-setwidth.lua
--
-luatexbase.provides_module({
- name = 'luatexja.setwidth',
- date = '2013/12/05',
- 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('stack'); local ltjs = luatexja.stack
luatexja.load_module('jfont'); local ltjf = luatexja.jfont
+luatexja.load_module('direction'); local ltjd = luatexja.direction
-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 ~= 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 round = tex.round
local id_glyph = node.id('glyph')
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_tablshift = luatexbase.attributes['ltj@tablshift']
+local attr_tkblshift = luatexbase.attributes['ltj@tkblshift']
local attr_icflag = luatexbase.attributes['ltj@icflag']
local ltjf_font_metric_table = ltjf.font_metric_table
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)
+ 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
+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 function capsule_glyph_yoko(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, p.width
+ 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)
+ fshift = call_callback("luatexja.set_width", fshift, met, class)
local fheight, fdepth = char_data.height, char_data.depth
- fheight = (fheight ~= 'prop') and fheight or p.height
- fdepth = (fdepth ~= 'prop') and fdepth or p.depth
- if (mode or pwidth ~= fwidth or p.height ~= fheight or p.depth ~= fdepth) then
- local y_shift, ca
- = - p.yoffset + (has_attr(p,attr_ykblshift) or 0), char_data.align
- local q; head, q = node.remove(head, p)
- p.yoffset, p.next = -fshift.down, nil
- if ca~='left' then
- p.xoffset = p.xoffset - fshift.left
- + (((ca=='right') and fwidth - pwidth) or round((fwidth - pwidth)*0.5))
- else
- p.xoffset = p.xoffset - fshift.left
- end
- 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 not needed
- set_attr(box, attr_icflag, PACKED + get_pr_begin_flag(p))
- head = q and node_insert_before(head, q, box)
+ 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)
+ 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
+ set_attr(p, attr_icflag, PROCESSED)
+ 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
+local function capsule_glyph_tate(p, met, class)
+ local char_data = met.char_type[class]
+ if not char_data then return node_next(p) end
+ local ascent, descent = met.ascent, met.descent
+ local fwidth, pwidth = char_data.width, ascent + descent
+ 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
+
+ setfield(p, 'char', ltjd.get_vert_glyph(getfont(p), getchar(p)))
+
+ local y_shift
+ = - getfield(p, 'yoffset') + (has_attr(p,attr_tkblshift) or 0)
+ local q
+ head, q = node_remove(head, p)
+ local box = node_new(id_hlist)
+ setfield(box, 'width', fwidth)
+ setfield(box, 'height', fheight)
+ setfield(box, 'depth', fdepth)
+ setfield(box, 'shift', y_shift)
+ setfield(box, 'dir', dir)
+
+ local k1 = node_new(id_kern)
+ setfield(k1, 'kern',
+ getfield(p, 'xoffset') + ascent
+ + 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 k2 = node_new(id_kern)
+ setfield(k2, 'kern', -fshift.down - fdepth)
+ local k3 = node_new(id_kern)
+ setfield(k3, 'kern', - getfield(p, 'width') +fshift.down + fdepth)
+ local wr = node_new(id_whatsit, sid_restore)
+ setfield(box, 'head', k1); setfield(k1, 'next', ws)
+ setfield(ws, 'next', wm); setfield(wm, 'next', k2);
+ setfield(k2, 'next', p); setfield(p, 'next', k3);
+ setfield(k3, 'next', 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
+end
+
+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)
+ 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', tex.mathdir)
+ set_attr(box, attr_icflag, PACKED)
+ return box
+end
+luatexja.setwidth.capsule_glyph_math = capsule_glyph_math
-function set_ja_width(ahead, dir)
- local p = ahead; head = ahead
+local tex_set_attr = tex.setattribute
+function luatexja.setwidth.set_ja_width(ahead, adir)
+ local p = ahead; head = p; dir = adir or 'TLT'
local m = false -- is in math mode?
+ local is_dir_tate = ltjs.list_dir==dir_tate
+ local capsule_glyph = is_dir_tate and capsule_glyph_tate or capsule_glyph_yoko
+ local attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
while p do
- local pid = p.id
- if (pid==id_glyph)
+ local pid = getid(p)
+ if (pid==id_glyph)
and ((has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG)<=0 then
- local pf = p.font
+ local pf = getfont(p)
if pf == has_attr(p, attr_curjfnt) then
- p = capsule_glyph(p, dir, false, ltjf_font_metric_table[pf],
+ 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)
+ -- TODO: neg. offset does not increase depth
+ --local d = getfield(p, 'yoffset') - (has_attr(p,attr_ablshift) or 0)
+ set_attr(p, attr_icflag, PROCESSED)
+ setfield(p, 'yoffset',
+ getfield(p, 'yoffset') - (has_attr(p,attr_ablshift) 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
-- 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
- p.shift = p.shift + (has_attr(p,attr_yablshift) or 0)
+ setfield(p, 'shift', getfield(p, 'shift') + (has_attr(p,attr_ablshift) or 0))
end
elseif pid==id_rule then
- local v = has_attr(p,attr_yablshift) or 0
- p.height = p.height - v; p.depth = p.depth + v
+ 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)
+ end
end
end
p = node_next(p)
end
end
-- adjust attr_icflag
- tex.setattribute('global', attr_icflag, 0)
+ tex_set_attr('global', attr_icflag, 0)
return head
end
+