diff options
Diffstat (limited to 'tex/generic/context/luatex/luatex-fonts-ext.lua')
| -rw-r--r-- | tex/generic/context/luatex/luatex-fonts-ext.lua | 251 |
1 files changed, 84 insertions, 167 deletions
diff --git a/tex/generic/context/luatex/luatex-fonts-ext.lua b/tex/generic/context/luatex/luatex-fonts-ext.lua index 15762d9ba..aee43ec4b 100644 --- a/tex/generic/context/luatex/luatex-fonts-ext.lua +++ b/tex/generic/context/luatex/luatex-fonts-ext.lua @@ -7,89 +7,54 @@ if not modules then modules = { } end modules ['luatex-fonts-ext'] = { } if context then - texio.write_nl("fatal error: this module is not for context") os.exit() end -local fonts = fonts -local otffeatures = fonts.constructors.features.otf -local getprivate = fonts.constructors.getprivate +local byte = string.byte --- A few generic extensions. +local fonts = fonts +local handlers = fonts.handlers +local otf = handlers.otf +local afm = handlers.afm +local registerotffeature = otf.features.register +local registerafmfeature = afm.features.register -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 +-- extra generic stuff -otffeatures.register { - name = "itlc", - description = "italic correction", - initializers = { - base = initializeitlc, - node = initializeitlc, - } -} +function fonts.loggers.onetimemessage() end --- slant and extend +-- done elsewhere +-- +-- loadmodule('font-ext-imp-italic.lua') +-- loadmodule('font-ext-imp-effect.lua') +-- loadmodule('luatex-fonts-lig.lua') -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 +-- protrusion (simplified version) -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 +fonts.protrusions = fonts.protrusions or { } +fonts.protrusions.setups = fonts.protrusions.setups or { } +local setups = fonts.protrusions.setups -otffeatures.register { - name = "extend", - description = "scale glyphs horizontally", - initializers = { - base = initializeextend, - node = initializeextend, - } -} +setups['default'] = { -- demo vector --- expansion and protrusion + factor = 1, + left = 1, + right = 1, -fonts.protrusions = fonts.protrusions or { } -fonts.protrusions.setups = fonts.protrusions.setups or { } + [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 ۔ -local setups = fonts.protrusions.setups +} local function initializeprotrusion(tfmdata,value) if value then @@ -112,7 +77,7 @@ local function initializeprotrusion(tfmdata,value) end end -otffeatures.register { +local specification = { name = "protrusion", description = "shift characters into the left and or right margin", initializers = { @@ -121,10 +86,32 @@ otffeatures.register { } } -fonts.expansions = fonts.expansions or { } -fonts.expansions.setups = fonts.expansions.setups or { } +registerotffeature(specification) +registerafmfeature(specification) -local setups = fonts.expansions.setups +-- expansion (simplified version) + +fonts.expansions = fonts.expansions or { } +fonts.expansions.setups = fonts.expansions.setups or { } +local setups = fonts.expansions.setups + +setups['default'] = { -- demo vector + + 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, +} local function initializeexpansion(tfmdata,value) if value then @@ -149,7 +136,7 @@ local function initializeexpansion(tfmdata,value) end end -otffeatures.register { +local specification = { name = "expansion", description = "apply hz optimization", initializers = { @@ -158,55 +145,20 @@ otffeatures.register { } } --- 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 ۔ +registerotffeature(specification) +registerafmfeature(specification) -} +-- normalizer (generic only) --- normalizer +if not otf.features.normalize then -fonts.handlers.otf.features.normalize = function(t) - if t.rand then - t.rand = "random" + otf.features.normalize = function(t) + if t.rand then + t.rand = "random" + end + return t end - return t + end -- bonus @@ -230,6 +182,8 @@ end -- [110] = 109, -- n -- } +-- reencoding (generic only) + fonts.encodings = fonts.encodings or { } local reencodings = { } fonts.encodings.reencodings = reencodings @@ -254,7 +208,7 @@ local function specialreencode(tfmdata,value) end end -local function reencode(tfmdata,value) +local function initialize(tfmdata,value) tfmdata.postprocessors = tfmdata.postprocessors or { } table.insert(tfmdata.postprocessors, function(tfmdata) @@ -263,65 +217,28 @@ local function reencode(tfmdata,value) ) end -otffeatures.register { +registerotffeature { name = "reencode", description = "reencode characters", manipulators = { - base = reencode, - node = reencode, + base = initialize, + node = initialize, } } -local function ignore(tfmdata,key,value) +-- math stuff (generic only) + +local function initialize(tfmdata,key,value) if value then tfmdata.mathparameters = nil end end -otffeatures.register { +registerotffeature { name = "ignoremathconstants", description = "ignore math constants table", initializers = { - base = ignore, - node = ignore, - } -} - -local setmetatableindex = table.setmetatableindex - -local function additalictowidth(tfmdata,key,value) - local characters = tfmdata.characters - local additions = { } - for unicode, old_c in next, characters do - -- maybe check for math - local oldwidth = old_c.width - local olditalic = old_c.italic - if olditalic and olditalic ~= 0 then - local private = getprivate(tfmdata) - local new_c = { - width = oldwidth + olditalic, - height = old_c.height, - depth = old_c.depth, - commands = { - { "slot", 1, private }, - { "right", olditalic }, - }, - } - setmetatableindex(new_c,old_c) - characters[unicode] = new_c - additions[private] = old_c - end - end - for k, v in next, additions do - characters[k] = v - end -end - -otffeatures.register { - name = "italicwidths", - description = "add italic to width", - manipulators = { - base = additalictowidth, - -- node = additalictowidth, -- only makes sense for math + base = initialize, + node = initialize, } } |