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-rw-r--r--luaotfload-fonts-ext.lua272
1 files changed, 0 insertions, 272 deletions
diff --git a/luaotfload-fonts-ext.lua b/luaotfload-fonts-ext.lua
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index b60d045..0000000
--- a/luaotfload-fonts-ext.lua
+++ /dev/null
@@ -1,272 +0,0 @@
-if not modules then modules = { } end modules ['luatex-fonts-ext'] = {
- version = 1.001,
- comment = "companion to luatex-*.tex",
- author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
- copyright = "PRAGMA ADE / ConTeXt Development Team",
- license = "see context related readme files"
-}
-
-if context then
- texio.write_nl("fatal error: this module is not for context")
- os.exit()
-end
-
-local fonts = fonts
-local otffeatures = fonts.constructors.newfeatures("otf")
-
--- A few generic extensions.
-
-local function initializeitlc(tfmdata,value)
- if value then
- -- the magic 40 and it formula come from Dohyun Kim but we might need another guess
- local parameters = tfmdata.parameters
- local italicangle = parameters.italicangle
- if italicangle and italicangle ~= 0 then
- local properties = tfmdata.properties
- local factor = tonumber(value) or 1
- properties.hasitalics = true
- properties.autoitalicamount = factor * (parameters.uwidth or 40)/2
- end
- end
-end
-
-otffeatures.register {
- name = "itlc",
- description = "italic correction",
- initializers = {
- base = initializeitlc,
- node = initializeitlc,
- }
-}
-
--- slant and extend
-
-local function initializeslant(tfmdata,value)
- value = tonumber(value)
- if not value then
- value = 0
- elseif value > 1 then
- value = 1
- elseif value < -1 then
- value = -1
- end
- tfmdata.parameters.slantfactor = value
-end
-
-otffeatures.register {
- name = "slant",
- description = "slant glyphs",
- initializers = {
- base = initializeslant,
- node = initializeslant,
- }
-}
-
-local function initializeextend(tfmdata,value)
- value = tonumber(value)
- if not value then
- value = 0
- elseif value > 10 then
- value = 10
- elseif value < -10 then
- value = -10
- end
- tfmdata.parameters.extendfactor = value
-end
-
-otffeatures.register {
- name = "extend",
- description = "scale glyphs horizontally",
- initializers = {
- base = initializeextend,
- node = initializeextend,
- }
-}
-
--- expansion and protrusion
-
-fonts.protrusions = fonts.protrusions or { }
-fonts.protrusions.setups = fonts.protrusions.setups or { }
-
-local setups = fonts.protrusions.setups
-
-local function initializeprotrusion(tfmdata,value)
- if value then
- local setup = setups[value]
- if setup then
- local factor, left, right = setup.factor or 1, setup.left or 1, setup.right or 1
- local emwidth = tfmdata.parameters.quad
- tfmdata.parameters.protrusion = {
- auto = true,
- }
- for i, chr in next, tfmdata.characters do
- local v, pl, pr = setup[i], nil, nil
- if v then
- pl, pr = v[1], v[2]
- end
- if pl and pl ~= 0 then chr.left_protruding = left *pl*factor end
- if pr and pr ~= 0 then chr.right_protruding = right*pr*factor end
- end
- end
- end
-end
-
-otffeatures.register {
- name = "protrusion",
- description = "shift characters into the left and or right margin",
- initializers = {
- base = initializeprotrusion,
- node = initializeprotrusion,
- }
-}
-
-fonts.expansions = fonts.expansions or { }
-fonts.expansions.setups = fonts.expansions.setups or { }
-
-local setups = fonts.expansions.setups
-
-local function initializeexpansion(tfmdata,value)
- if value then
- local setup = setups[value]
- if setup then
- local factor = setup.factor or 1
- tfmdata.parameters.expansion = {
- stretch = 10 * (setup.stretch or 0),
- shrink = 10 * (setup.shrink or 0),
- step = 10 * (setup.step or 0),
- auto = true,
- }
- for i, chr in next, tfmdata.characters do
- local v = setup[i]
- if v and v ~= 0 then
- chr.expansion_factor = v*factor
- else -- can be option
- chr.expansion_factor = factor
- end
- end
- end
- end
-end
-
-otffeatures.register {
- name = "expansion",
- description = "apply hz optimization",
- initializers = {
- base = initializeexpansion,
- node = initializeexpansion,
- }
-}
-
--- left over
-
-function fonts.loggers.onetimemessage() end
-
--- example vectors
-
-local byte = string.byte
-
-fonts.expansions.setups['default'] = {
-
- stretch = 2, shrink = 2, step = .5, factor = 1,
-
- [byte('A')] = 0.5, [byte('B')] = 0.7, [byte('C')] = 0.7, [byte('D')] = 0.5, [byte('E')] = 0.7,
- [byte('F')] = 0.7, [byte('G')] = 0.5, [byte('H')] = 0.7, [byte('K')] = 0.7, [byte('M')] = 0.7,
- [byte('N')] = 0.7, [byte('O')] = 0.5, [byte('P')] = 0.7, [byte('Q')] = 0.5, [byte('R')] = 0.7,
- [byte('S')] = 0.7, [byte('U')] = 0.7, [byte('W')] = 0.7, [byte('Z')] = 0.7,
- [byte('a')] = 0.7, [byte('b')] = 0.7, [byte('c')] = 0.7, [byte('d')] = 0.7, [byte('e')] = 0.7,
- [byte('g')] = 0.7, [byte('h')] = 0.7, [byte('k')] = 0.7, [byte('m')] = 0.7, [byte('n')] = 0.7,
- [byte('o')] = 0.7, [byte('p')] = 0.7, [byte('q')] = 0.7, [byte('s')] = 0.7, [byte('u')] = 0.7,
- [byte('w')] = 0.7, [byte('z')] = 0.7,
- [byte('2')] = 0.7, [byte('3')] = 0.7, [byte('6')] = 0.7, [byte('8')] = 0.7, [byte('9')] = 0.7,
-}
-
-fonts.protrusions.setups['default'] = {
-
- factor = 1, left = 1, right = 1,
-
- [0x002C] = { 0, 1 }, -- comma
- [0x002E] = { 0, 1 }, -- period
- [0x003A] = { 0, 1 }, -- colon
- [0x003B] = { 0, 1 }, -- semicolon
- [0x002D] = { 0, 1 }, -- hyphen
- [0x2013] = { 0, 0.50 }, -- endash
- [0x2014] = { 0, 0.33 }, -- emdash
- [0x3001] = { 0, 1 }, -- ideographic comma 、
- [0x3002] = { 0, 1 }, -- ideographic full stop 。
- [0x060C] = { 0, 1 }, -- arabic comma ،
- [0x061B] = { 0, 1 }, -- arabic semicolon ؛
- [0x06D4] = { 0, 1 }, -- arabic full stop ۔
-
-}
-
--- normalizer
-
-fonts.handlers.otf.features.normalize = function(t)
- if t.rand then
- t.rand = "random"
- end
- return t
-end
-
--- bonus
-
-function fonts.helpers.nametoslot(name)
- local t = type(name)
- if t == "string" then
- local tfmdata = fonts.hashes.identifiers[currentfont()]
- local shared = tfmdata and tfmdata.shared
- local fntdata = shared and shared.rawdata
- return fntdata and fntdata.resources.unicodes[name]
- elseif t == "number" then
- return n
- end
-end
-
--- \font\test=file:somefont:reencode=mymessup
---
--- fonts.encodings.reencodings.mymessup = {
--- [109] = 110, -- m
--- [110] = 109, -- n
--- }
-
-fonts.encodings = fonts.encodings or { }
-local reencodings = { }
-fonts.encodings.reencodings = reencodings
-
-local function specialreencode(tfmdata,value)
- -- we forget about kerns as we assume symbols and we
- -- could issue a message if ther are kerns but it's
- -- a hack anyway so we odn't care too much here
- local encoding = value and reencodings[value]
- if encoding then
- local temp = { }
- local char = tfmdata.characters
- for k, v in next, encoding do
- temp[k] = char[v]
- end
- for k, v in next, temp do
- char[k] = temp[k]
- end
- -- if we use the font otherwise luatex gets confused so
- -- we return an additional hash component for fullname
- return string.format("reencoded:%s",value)
- end
-end
-
-local function reencode(tfmdata,value)
- tfmdata.postprocessors = tfmdata.postprocessors or { }
- table.insert(tfmdata.postprocessors,
- function(tfmdata)
- return specialreencode(tfmdata,value)
- end
- )
-end
-
-otffeatures.register {
- name = "reencode",
- description = "reencode characters",
- manipulators = {
- base = reencode,
- node = reencode,
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 20:18:19 +0000