diff options
Diffstat (limited to 'Master/texmf-dist/tex/context/base/font-vf.lua')
-rw-r--r-- | Master/texmf-dist/tex/context/base/font-vf.lua | 268 |
1 files changed, 129 insertions, 139 deletions
diff --git a/Master/texmf-dist/tex/context/base/font-vf.lua b/Master/texmf-dist/tex/context/base/font-vf.lua index 4f99c47b94b..287d073d6bd 100644 --- a/Master/texmf-dist/tex/context/base/font-vf.lua +++ b/Master/texmf-dist/tex/context/base/font-vf.lua @@ -11,30 +11,97 @@ if not modules then modules = { } end modules ['font-vf'] = { changes. This will change.</p> --ldx]]-- --- define.methods elsewhere ! +local next = next + +local allocate = utilities.storage.allocate +local setmetatableindex = table.setmetatableindex +local fastcopy = table.fastcopy + +local fonts = fonts +local constructors = fonts.constructors +local vf = { } +fonts.handlers.vf = vf + +-- general code + +function vf.find(name) + name = file.removesuffix(file.basename(name)) + if constructors.resolvevirtualtoo then + local format = fonts.loggers.format(name) + if format == 'tfm' or format == 'ofm' then + if trace_defining then + report_defining("locating vf for %s",name) + end + return findbinfile(name,"ovf") + else + if trace_defining then + report_defining("vf for %s is already taken care of",name) + end + return nil -- "" + end + else + if trace_defining then + report_defining("locating vf for %s",name) + end + return findbinfile(name,"ovf") + end +end + +--[[ldx-- +<p>We overload the <l n='vf'/> reader.</p> +--ldx]]-- + +callbacks.register('find_vf_file', vf.find, "locating virtual fonts, insofar needed") -- not that relevant any more -fonts = fonts or { } -fonts.vf = fonts.vf or { } +-- specific code (will move to other module) -local vf = fonts.vf -local tfm = fonts.tfm +local definers = fonts.definers +local methods = definers.methods -fonts.define = fonts.define or { } -fonts.define.methods = fonts.define.methods or { } +local variants = allocate() +local combinations = { } +local combiner = { } +local whatever = allocate() +local helpers = allocate() +local predefined = allocate { + dummy = { "comment" }, + push = { "push" }, + pop = { "pop" }, +} + +methods.variants = variants -- todo .. wrong namespace +vf.combinations = combinations +vf.combiner = combiner +vf.whatever = whatever +vf.helpers = helpers +vf.predefined = predefined + +setmetatableindex(whatever, function(t,k) local v = { } t[k] = v return v end) -vf.combinations = vf.combinations or { } -vf.aux = vf.aux or { } -vf.aux.combine = vf.aux.combine or { } +local function checkparameters(g,f) + if f and g and not g.parameters and #g.fonts > 0 then + local p = { } + for k,v in next, f.parameters do + p[k] = v + end + g.parameters = p + setmetatable(p, getmetatable(f.parameters)) + end +end -function fonts.define.methods.install(tag, rules) +function methods.install(tag, rules) vf.combinations[tag] = rules - fonts.define.methods[tag] = function(specification) + variants[tag] = function(specification) return vf.combine(specification,tag) end end -function vf.aux.combine.assign(g, name, from, to, start, force) - local f, id = vf.aux.combine.load(g,name) +local function combine_load(g,name) + return constructors.readanddefine(name or g.specification.name,g.specification.size) +end + +local function combine_assign(g, name, from, to, start, force) + local f, id = combine_load(g,name) if f and id then -- optimize for whole range, then just g = f if not from then from, to = 0, 0xFF00 end @@ -46,36 +113,26 @@ function vf.aux.combine.assign(g, name, from, to, start, force) g.fonts[hn] = { id = id } -- no need to be sparse for i=from,to do if fc[i] and (force or not gc[i]) then - gc[i] = table.fastcopy(fc[i]) -- can be optimized + gc[i] = fastcopy(fc[i],true) -- can be optimized gc[i].commands = { { 'slot', hn, start } } gd[i] = fd[i] end start = start + 1 end - if not g.parameters and #g.fonts > 0 then -- share this code ! - g.parameters = table.fastcopy(f.parameters) - g.italicangle = f.italicangle - g.ascender = f.ascender - g.descender = f.descender - g.factor = f.factor -- brrr - end + checkparameters(g,f) end end -function vf.aux.combine.process(g,list) +local function combine_process(g,list) if list then for _,v in next, list do - (vf.aux.combine.commands[v[1]] or nop)(g,v) + (combiner.commands[v[1]] or nop)(g,v) end end end -function vf.aux.combine.load(g,name) - return tfm.read_and_define(name or g.specification.name,g.specification.size) -end - -function vf.aux.combine.names(g,name,force) - local f, id = tfm.read_and_define(name,g.specification.size) +local function combine_names(g,name,force) + local f, id = constructors.readanddefine(name,g.specification.size) if f and id then local fc, gc = f.characters, g.characters local fd, gd = f.descriptions, g.descriptions @@ -83,131 +140,64 @@ function vf.aux.combine.names(g,name,force) local hn = #g.fonts for k, v in next, fc do if force or not gc[k] then - gc[k] = table.fastcopy(v) + gc[k] = fastcopy(v,true) gc[k].commands = { { 'slot', hn, k } } gd[i] = fd[i] end end - if not g.parameters and #g.fonts > 0 then -- share this code ! - g.parameters = table.fastcopy(f.parameters) - g.italicangle = f.italicangle - g.ascender = f.ascender - g.descender = f.descender - g.factor = f.factor -- brrr - end + checkparameters(g,f) end end -vf.aux.combine.commands = { - ["initialize"] = function(g,v) vf.aux.combine.assign (g,g.name) end, - ["include-method"] = function(g,v) vf.aux.combine.process (g,vf.combinations[v[2]]) end, -- name - ["copy-parameters"] = function(g,v) vf.aux.combine.parameters(g,v[2]) end, -- name - ["copy-range"] = function(g,v) vf.aux.combine.assign (g,v[2],v[3],v[4],v[5],true) end, -- name, from-start, from-end, to-start - ["copy-char"] = function(g,v) vf.aux.combine.assign (g,v[2],v[3],v[3],v[4],true) end, -- name, from, to - ["fallback-range"] = function(g,v) vf.aux.combine.assign (g,v[2],v[3],v[4],v[5],false) end, -- name, from-start, from-end, to-start - ["fallback-char"] = function(g,v) vf.aux.combine.assign (g,v[2],v[3],v[3],v[4],false) end, -- name, from, to - ["copy_names"] = function(g,v) vf.aux.combine.names (g,v[2],true) end, - ["fallback_names"] = function(g,v) vf.aux.combine.names (g,v[2],false) end, -} - -function vf.combine(specification,tag) - local g = { - name = specification.name, - -- type = 'virtual', - virtualized = true, - fonts = { }, - characters = { }, - descriptions = { }, - specification = table.fastcopy(specification) - } - vf.aux.combine.process(g,vf.combinations[tag]) - return g -end - -vf.aux.combine.commands["feature"] = function(g,v) +local combine_feature = function(g,v) local key, value = v[2], v[3] if key then if value == nil then value = true end - if g.specification and g.specification.features.normal then - g.specification.features.normal[key] = value -- otf? + local specification = g.specification + if specification then + local normalfeatures = specification.features.normal + if normalfeatures then + normalfeatures[key] = value -- otf? + end end end end --- simple example with features +--~ combiner.load = combine_load +--~ combiner.assign = combine_assign +--~ combiner.process = combine_process +--~ combiner.names = combine_names +--~ combiner.feature = combine_feature + +combiner.commands = allocate { + ["initialize"] = function(g,v) combine_assign (g,g.properties.name) end, + ["include-method"] = function(g,v) combine_process (g,combinations[v[2]]) end, -- name + -- ["copy-parameters"] = function(g,v) combine_parameters(g,v[2]) end, -- name + ["copy-range"] = function(g,v) combine_assign (g,v[2],v[3],v[4],v[5],true) end, -- name, from-start, from-end, to-start + ["copy-char"] = function(g,v) combine_assign (g,v[2],v[3],v[3],v[4],true) end, -- name, from, to + ["fallback-range"] = function(g,v) combine_assign (g,v[2],v[3],v[4],v[5],false) end, -- name, from-start, from-end, to-start + ["fallback-char"] = function(g,v) combine_assign (g,v[2],v[3],v[3],v[4],false) end, -- name, from, to + ["copy-names"] = function(g,v) combine_names (g,v[2],true) end, + ["fallback-names"] = function(g,v) combine_names (g,v[2],false) end, + ["feature"] = combine_feature, +} -fonts.define.methods.install( - "ligatures", { - { "feature", "liga" } , - { "feature", "dlig" } , - { "initialize" } , +function vf.combine(specification,tag) + local g = { + name = specification.name, + properties = { + virtualized = true, + }, + fonts = { + }, + characters = { + }, + descriptions = { + }, + specification = fastcopy(specification), } -) - ---~ fonts.define.methods.install ( ---~ "ligatures-x", { ---~ { "feature", "liga" } , ---~ { "feature", "dlig" } , ---~ { "initialize" } , ---~ { "lineheight" } ---~ } ---~ ) - ---~ fonts.define.methods.install( ---~ "lmsymbol10", { ---~ { "fallback_names", "lmsy10.afm" } , ---~ { "fallback_names", "msam10.afm" } , ---~ { "fallback_names", "msbm10.afm" } ---~ } ---~ ) ---~ \font\TestFont=dummy@lmsymbol10 at 24pt - --- docu case - ---~ fonts.define.methods.install( ---~ "weird", { ---~ { "copy-range", "lmroman10-regular" } , ---~ { "copy-char", "lmroman10-regular", 65, 66 } , ---~ { "copy-range", "lmsans10-regular", 0x0100, 0x01FF } , ---~ { "copy-range", "lmtypewriter10-regular", 0x0200, 0xFF00 } , ---~ { "fallback-range", "lmtypewriter10-regular", 0x0000, 0x0200 } ---~ } ---~ ) - --- demo case -> move to module - -fonts.define.methods["demo-1"] = function(specification) - local name = specification.name -- symbolic name - local size = specification.size -- given size - local f, id = tfm.read_and_define('lmroman10-regular',size) - if f and id then - local capscale, digscale = 0.85, 0.75 - -- f.name, f.type = name, 'virtual' - f.name, f.virtualized = name, true - f.fonts = { - { id = id }, - { name = 'lmsans10-regular' , size = size*capscale }, -- forced extra name - { name = 'lmtypewriter10-regular', size = size*digscale } -- forced extra name - } - local i_is_of_category = characters.i_is_of_category - local characters, descriptions = f.characters, f.descriptions - local red = {'special','pdf: 1 0 0 rg'} - local green = {'special','pdf: 0 1 0 rg'} - local blue = {'special','pdf: 0 0 1 rg'} - local black = {'special','pdf: 0 g'} - for u,v in next, characters do - if u and i_is_of_category(u,'lu') then - v.width = capscale*v.width - v.commands = { red, {'slot',2,u}, black } - elseif u and i_is_of_category(u,'nd') then - v.width = digscale*v.width - v.commands = { blue, {'slot',3,u}, black } - else - v.commands = { green, {'slot',1,u}, black } - end - end - end - return f + combine_process(g,combinations[tag]) + return g end |