1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
if not modules then modules = { } end modules ['font-imp-scripts'] = {
version = 1.001,
comment = "companion to font-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local getrange = characters.getrange
local settings_to_hash = utilities.parsers.settings_to_hash
if not context then return end
-- the defaults are not yet ok
local next, type, tonumber = next, type, tonumber
local gmatch = string.gmatch
local max = math.max
local fonts = fonts
local utilities = utilities
local helpers = fonts.helpers
local charcommand = helpers.commands.char
local downcommand = helpers.commands.down
local upcommand = helpers.commands.up
local handlers = fonts.handlers
local otf = handlers.otf
local afm = handlers.afm
local registerotffeature = otf.features.register
local registerafmfeature = afm.features.register
local settings_to_hash = utilities.parsers.settings_to_hash
local sortedhash = table.sortedhash
local handlers = fonts.handlers
local sup = nil
local sub = nil
local function initialize(tfmdata,key,value)
--
if not sup then
sup = { }
sub = { }
for unicode, data in next, characters.data do
local specials = data.specials
if specials then
local what = specials[1]
if what == "super" then
sup[unicode] = specials[2]
elseif what == "sub" then
sub[unicode] = specials[2]
end
end
end
end
--
local spec
if value == true then
spec = { factor = 3/5, up = 5/4, down = 1/4 }
elseif type(value) == "number" then
spec = { factor = value, up = 5/4, down = 1/4 }
else
spec = settings_to_hash(value)
end
local factor = tonumber(spec.factor) or 3/5
local up = tonumber(spec.up) or 5/4
local down = tonumber(spec.down) or 1/4
--
local characters = tfmdata.characters
local parameters = tfmdata.parameters
local up = parameters.xheight * up
local down = -parameters.xheight * down
-- disable sups/subs
local function add(unicode,other,go_up)
local old = characters[other]
if old then
local shift = go_up and up or down
local width = (old.width or 0) * factor
local height = (old.height or 0) * factor + shift
local depth = go_up and 0 or max((old.depth or 0) * factor + down,0)
characters[unicode] = {
width = width,
height = height,
depth = depth,
commands = { { "offset", 0, shift, other, factor, factor } },
-- yoffset = shift,
-- xscale = factor,
-- yscale = factor,
-- commands = { { "slot", 0, other } }, -- { slotcommand[0][other] or charcommand[other] }
}
end
end
for unicode, other in sortedhash(sup) do
add(unicode,other,true)
end
for unicode, other in sortedhash(sub) do
add(unicode,other,false)
end
end
local specification = {
name = "scripts",
description = "add superiors and inferiors",
manipulators = {
base = initialize,
node = initialize,
}
}
registerotffeature(specification)
registerafmfeature(specification)
-- a different kind of scripts support
local function initialize(tfmdata,key,value)
if value then
local detail = type(value) == "string" and settings_to_hash(value) or { }
local orientation = tonumber(detail.orientation) or 0
if orientation == 1 or orientation == 3 then
local characters = tfmdata.characters
local parameters = tfmdata.parameters
local emwidth = parameters.quad
local exheight = parameters.xheight
local ranges = detail.ranges
local downshift = exheight * (tonumber(detail.down) or 0)
local rightshift = exheight * (tonumber(detail.right) or 0)
local orientate
if orientation == 1 then
orientate = function(character)
local width = character.width or 0
local height = character.height or 0
local depth = character.depth or 0
character.width = height + depth + rightshift + rightshift
character.height = width - downshift
character.depth = shift
character.xoffset = depth + rightshift
character.yoffset = width - downshift
character.orientation = orientation
end
else
orientate = function(character)
local width = character.width or 0
local height = character.height or 0
local depth = character.depth or 0
-- character.width = height + depth + rightshift + rightshift
character.height = width - downshift
character.depth = shift
-- character.xoffset = height + rightshift
-- character.yoffset = - downshift
-- character.orientation = orientation
end
end
if ranges then
for s in gmatch(ranges,"[^, ]+") do
local start, stop, description, gaps = getrange(s,true)
if start and stop then
for unicode=start,stop do
local character = characters[unicode]
if character then
orientate(character)
end
end
end
end
else
for unicode, character in next, characters do
orientate(character)
end
end
end
end
end
local specification = {
name = "vertical",
description = "vertical",
manipulators = {
base = initialize,
node = initialize,
}
}
registerotffeature(specification)
registerafmfeature(specification)
|
