--
luatexbase.provides_module({
name = 'luatexja.setwidth',
- date = '2011/06/28',
- version = '0.1',
+ date = '2012/07/19',
+ version = '0.2',
description = '',
})
module('luatexja.setwidth', package.seeall)
local node_insert_after = node.insert_after
local round = tex.round
+
local id_glyph = node.id('glyph')
local id_kern = node.id('kern')
local id_hlist = node.id('hlist')
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
+local PROCESSED = 11
+local IC_PROCESSED = 12
+local PROCESSED_BEGIN_FLAG = 32
-char_data = {}
-head = nil
-
--- 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)
+do
+ local floor = math.floor
+ function get_pr_begin_flag(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
luatexbase.create_callback("luatexja.set_width", "data",
function (fstable, fmtable, jchar_class)
end)
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 char_data = met.size_cache.char_type[class]
+ if not char_data then return node_next(p) end
+ local fwidth, pwidth = char_data.width, p.width
+ fwidth = (fwidth ~= 'prop') and fwidth or pwidth
+ local fheight, fdepth = char_data.height, char_data.depth
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/2); p.next = h
- h = node_new(id_kern); h.subtype = 0
- h.kern = total - round(total/2); 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)
+ 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 total ~= 0 and ca~='left' then
+ p.xoffset = p.xoffset - fshift.left
+ + (((ca=='right') and fwidth - pwidth) or round((fwidth - pwidth)*0.5))
else
- head = node_insert_after(head, node_tail(head), box)
+ 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)
+ 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))
+ p.xoffset = p.xoffset - fshift.left
+ p.yoffset = p.yoffset - (has_attr(p, attr_ykblshift) or 0) - fshift.down
return node_next(p)
end
end
local p = ahead; head = ahead
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
+ if (p.id==id_glyph)
+ and ((has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG)<=0 then
+ local pf = p.font
+ if pf == has_attr(p, attr_curjfnt) then
+ p = capsule_glyph(p, dir, false, 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)
end
elseif p.id==id_math then
end
end
-- adjust attr_icflag
- tex.attribute[attr_icflag] = -(0x7FFFFFFF)
+ tex.setattribute('global', attr_icflag, 0)
return head
end
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