--
luatexbase.provides_module({
name = 'luatexja.jfont',
- date = '2014/02/01',
+ date = '2014/08/12',
description = 'Loader for Japanese fonts',
})
module('luatexja.jfont', package.seeall)
luatexja.load_module('base'); local ltjb = luatexja.base
luatexja.load_module('charrange'); local ltjc = luatexja.charrange
+luatexja.load_module('rmlgbm'); local ltjr = luatexja.rmlgbm
+luatexja.load_module('direction'); local ltjd = luatexja.direction
local Dnode = node.direct or node
end
do
+ local get_dir_count = ltjd.get_dir_count
+ local dir_tate = luatexja.dir_table.dir_tate
+ local tex_get_attr = tex.getattribute
-- PUBLIC function
function get_zw()
- local a = font_metric_table[tex.attribute[attr_curjfnt]]
+ local a = font_metric_table[
+ tex_get_attr((get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)]
return a and a.zw or 0
end
function get_zh()
- local a = font_metric_table[tex.attribute[attr_curjfnt]]
+ local a = font_metric_table[
+ tex_get_attr((get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)]
return a and a.zw or 0
end
end
end
return name
end
- luatexja.jfont.extract_metric = extract_metric
+
+ -- define_font callback
+ local otfl_fdr = fonts.definers.read
+ local ltjr_font_callback = ltjr.font_callback
+ function luatexja.font_callback(name, size, id)
+ local new_name = extract_metric(name)
+ local res = ltjr_font_callback(new_name, size, id, otfl_fdr)
+ luatexbase.call_callback('luatexja.define_font', res, new_name, size, id)
+ return res
+ end
+ luatexbase.create_callback('luatexja.define_font', 'simple', function (n) return n end)
+ luatexbase.add_to_callback('define_font',luatexja.font_callback,"luatexja.font_callback", 1)
end
------------------------------------------------------------------------
------------------------------------------------------------------------
--- MISC
+-- 縦書き用字形への変換テーブル
------------------------------------------------------------------------
+local font_vert_table = {} -- key: fontnumber
+do
+ local font_vert_basename = {} -- key: basename
+ local function add_feature_table(tname, src, dest)
+ for i,v in pairs(src) do
+ if type(v.slookups)=='table' then
+ local s = v.slookups[tname]
+ if s and not dest[i] then
+ dest[i] = s
+ end
+ end
+ end
+ end
-local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
--- EXT: italic correction
-function append_italic()
- local p = to_direct(tex.nest[tex.nest.ptr].tail)
- if p and getid(p)==id_glyph then
- local f = getfont(p)
- local g = node_new(id_kern)
- setfield(g, 'subtype', 1)
- set_attr(g, attr_icflag, ITALIC)
- if is_ucs_in_japanese_char(p) then
- f = has_attr(p, attr_curjfnt)
- local j = font_metric_table[f]
- setfield(g, 'kern', j.char_type[find_char_class(getchar(p), j)].italic)
- else
- local h = font_getfont(f)
- if h then
- setfield(g, 'kern', h.characters[getchar(p)].italic)
+ local function prepare_vert_data(n, id)
+ -- test if already loaded
+ if type(id)=='number' then -- sometimes id is an integer
+ font_vert_table[n] = font_vert_table[id]; return
+ elseif (not id) or font_vert_table[n] then return
+ end
+ local fname = id.filename
+ local bname = file.basename(fname)
+ if not fname then
+ font_vert_table[n] = {}; return
+ elseif font_vert_basename[bname] then
+ font_vert_table[n] = font_vert_basename[bname]; return
+ end
+ local vtable = {}
+ local a = id.resources.sequences
+ if a then
+ local s = id.shared.rawdata.descriptions
+ for i,v in pairs(a) do
+ if v.features.vert or v.features.vrt2 then
+ add_feature_table(v.subtables[1], s, vtable)
+ end
+ end
+ end
+ font_vert_basename[bname] = vtable
+ font_vert_table[n] = vtable
+ end
+ -- 縦書き用字形への変換
+ function get_vert_glyph(n, chr)
+ local fn = font_vert_table[n]
+ return fn and fn[chr] or chr
+ end
+ luatexbase.add_to_callback('luatexja.define_font',
+ function (res, name, size, id)
+ prepare_vert_data(id, res)
+ end,
+ 'prepare_vert_data', 1)
+
+ local function a (n, dat) font_vert_table[n] = dat end
+ ltjr.vert_addfunc = a
+
+end
+
+------------------------------------------------------------------------
+-- MISC
+------------------------------------------------------------------------
+do
+ local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
+ local tex_set_attr = tex.setattribute
+ -- EXT: italic correction
+ function append_italic()
+ local p = to_direct(tex.nest[tex.nest.ptr].tail)
+ if p and getid(p)==id_glyph then
+ local f = getfont(p)
+ local g = node_new(id_kern)
+ setfield(g, 'subtype', 1)
+ set_attr(g, attr_icflag, ITALIC)
+ if is_ucs_in_japanese_char(p) then
+ f = has_attr(p, attr_curjfnt)
+ local j = font_metric_table[f]
+ setfield(g, 'kern', j.char_type[find_char_class(getchar(p), j)].italic)
else
- tex.attribute[attr_icflag] = 0
- return node_free(g)
+ local h = font_getfont(f)
+ if h then
+ setfield(g, 'kern', h.characters[getchar(p)].italic)
+ else
+ tex_set_attr(attr_icflag, 0)
+ return node_free(g)
+ end
end
+ node_write(g)
+ tex_set_attr(attr_icflag, 0)
end
- node_write(g)
- tex.attribute[attr_icflag] = 0
end
end
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