diff options
Diffstat (limited to 'tex/context/base/font-tfm.lua')
| -rw-r--r-- | tex/context/base/font-tfm.lua | 133 |
1 files changed, 66 insertions, 67 deletions
diff --git a/tex/context/base/font-tfm.lua b/tex/context/base/font-tfm.lua index d51bcc3b8..a48d3c3f4 100644 --- a/tex/context/base/font-tfm.lua +++ b/tex/context/base/font-tfm.lua @@ -11,6 +11,8 @@ local utf = unicode.utf8 local next, format, match, lower, gsub = next, string.format, string.match, string.lower, string.gsub local concat, sortedkeys, utfbyte, serialize = table.concat, table.sortedkeys, utf.byte, table.serialize +local allocate = utilities.storage.allocate + local trace_defining = false trackers.register("fonts.defining", function(v) trace_defining = v end) local trace_scaling = false trackers.register("fonts.scaling" , function(v) trace_scaling = v end) @@ -28,8 +30,8 @@ local report_define = logs.new("define fonts") local fonts = fonts local tfm = fonts.tfm -fonts.loaded = fonts.loaded or { } -fonts.dontembed = fonts.dontembed or { } +fonts.loaded = allocate() +fonts.dontembed = allocate() fonts.triggers = fonts.triggers or { } -- brrr fonts.initializers = fonts.initializers or { } fonts.initializers.common = fonts.initializers.common or { } @@ -47,10 +49,10 @@ local glyph_code = nodecodes.glyph supplied by <l n='luatex'/>.</p> --ldx]]-- -tfm.resolve_vf = true -- false -tfm.share_base_kerns = false -- true (.5 sec slower on mk but brings down mem from 410M to 310M, beware: then script/lang share too) -tfm.mathactions = { } -tfm.fontname_mode = "fullpath" +tfm.resolvevirtualtoo = true -- false +tfm.sharebasekerns = false -- true (.5 sec slower on mk but brings down mem from 410M to 310M, beware: then script/lang share too) +tfm.mathactions = { } +tfm.fontnamemode = "fullpath" tfm.enhance = tfm.enhance or function() end @@ -65,7 +67,7 @@ function tfm.read_from_tfm(specification) tfmdata = font.read_tfm(fname,specification.size) -- not cached, fast enough if tfmdata then tfmdata.descriptions = tfmdata.descriptions or { } - if tfm.resolve_vf then + if tfm.resolvevirtualtoo then fonts.logger.save(tfmdata,file.extname(fname),specification) -- strange, why here fname = resolvers.findbinfile(specification.name, 'ovf') if fname and fname ~= "" then @@ -126,7 +128,7 @@ end to scale virtual characters.</p> --ldx]]-- -function tfm.get_virtual_id(tfmdata) +function tfm.getvirtualid(tfmdata) -- since we don't know the id yet, we use 0 as signal if not tfmdata.fonts then tfmdata.type = "virtual" @@ -138,7 +140,7 @@ function tfm.get_virtual_id(tfmdata) end end -function tfm.check_virtual_id(tfmdata, id) +function tfm.checkvirtualid(tfmdata, id) if tfmdata and tfmdata.type == "virtual" then if not tfmdata.fonts or #tfmdata.fonts == 0 then tfmdata.type, tfmdata.fonts = "real", nil @@ -168,7 +170,7 @@ fonts.trace_scaling = false -- sharedkerns are unscaled and are be hashed by concatenated indexes --~ function tfm.check_base_kerns(tfmdata) ---~ if tfm.share_base_kerns then +--~ if tfm.sharebasekerns then --~ local sharedkerns = tfmdata.sharedkerns --~ if sharedkerns then --~ local basekerns = { } @@ -180,7 +182,7 @@ fonts.trace_scaling = false --~ end --~ function tfm.prepare_base_kerns(tfmdata) ---~ if tfm.share_base_kerns and not tfmdata.sharedkerns then +--~ if tfm.sharebasekerns and not tfmdata.sharedkerns then --~ local sharedkerns = { } --~ tfmdata.sharedkerns = sharedkerns --~ for u, chr in next, tfmdata.characters do @@ -209,7 +211,43 @@ local charactercache = { } -- a virtual font has italic correction make sure to set the -- has_italic flag. Some more flags will be added in the future. -function tfm.calculate_scale(tfmtable, scaledpoints) +--[[ldx-- +<p>The reason why the scaler was originally split, is that for a while we experimented +with a helper function. However, in practice the <l n='api'/> calls are too slow to +make this profitable and the <l n='lua'/> based variant was just faster. A days +wasted day but an experience richer.</p> +--ldx]]-- + +tfm.autocleanup = true + +local lastfont = nil + +-- we can get rid of the tfm instance when we have fast access to the +-- scaled character dimensions at the tex end, e.g. a fontobject.width +-- +-- flushing the kern and ligature tables from memory saves a lot (only +-- base mode) but it complicates vf building where the new characters +-- demand this data .. solution: functions that access them + +function tfm.cleanuptable(tfmdata) -- we need a cleanup callback, now we miss the last one + if tfm.autocleanup then -- ok, we can hook this into everyshipout or so ... todo + if tfmdata.type == 'virtual' or tfmdata.virtualized then + for k, v in next, tfmdata.characters do + if v.commands then v.commands = nil end + -- if v.kerns then v.kerns = nil end + end + else + -- for k, v in next, tfmdata.characters do + -- if v.kerns then v.kerns = nil end + -- end + end + end +end + +function tfm.cleanup(tfmdata) -- we need a cleanup callback, now we miss the last one +end + +function tfm.calculatescale(tfmtable, scaledpoints) if scaledpoints < 0 then scaledpoints = (- scaledpoints/1000) * tfmtable.designsize -- already in sp end @@ -218,10 +256,10 @@ function tfm.calculate_scale(tfmtable, scaledpoints) return scaledpoints, delta, units end -function tfm.do_scale(tfmtable, scaledpoints, relativeid) +function tfm.scale(tfmtable, scaledpoints, relativeid) -- tfm.prepare_base_kerns(tfmtable) -- optimalization local t = { } -- the new table - local scaledpoints, delta, units = tfm.calculate_scale(tfmtable, scaledpoints, relativeid) + local scaledpoints, delta, units = tfm.calculatescale(tfmtable, scaledpoints, relativeid) t.units_per_em = units or 1000 local hdelta, vdelta = delta, delta -- unicoded unique descriptions shared cidinfo characters changed parameters indices @@ -303,7 +341,7 @@ function tfm.do_scale(tfmtable, scaledpoints, relativeid) local scaledheight = defaultheight * vdelta local scaleddepth = defaultdepth * vdelta local stackmath = tfmtable.ignore_stack_math ~= true - local private = fonts.private + local private = fonts.privateoffset local sharedkerns = { } for k,v in next, characters do local chr, description, index @@ -588,55 +626,14 @@ function tfm.do_scale(tfmtable, scaledpoints, relativeid) report_define("used for accesing subfont: '%s'",t.psname or "nopsname") report_define("used for subsetting: '%s'",t.fontname or "nofontname") end ---~ print(t.fontname,table.serialize(t.MathConstants)) - return t, delta -end - ---[[ldx-- -<p>The reason why the scaler is split, is that for a while we experimented -with a helper function. However, in practice the <l n='api'/> calls are too slow to -make this profitable and the <l n='lua'/> based variant was just faster. A days -wasted day but an experience richer.</p> ---ldx]]-- - -tfm.auto_cleanup = true - -local lastfont = nil - --- we can get rid of the tfm instance when we have fast access to the --- scaled character dimensions at the tex end, e.g. a fontobject.width --- --- flushing the kern and ligature tables from memory saves a lot (only --- base mode) but it complicates vf building where the new characters --- demand this data .. solution: functions that access them - -function tfm.cleanup_table(tfmdata) -- we need a cleanup callback, now we miss the last one - if tfm.auto_cleanup then -- ok, we can hook this into everyshipout or so ... todo - if tfmdata.type == 'virtual' or tfmdata.virtualized then - for k, v in next, tfmdata.characters do - if v.commands then v.commands = nil end - -- if v.kerns then v.kerns = nil end - end - else - -- for k, v in next, tfmdata.characters do - -- if v.kerns then v.kerns = nil end - -- end - end - end -end - -function tfm.cleanup(tfmdata) -- we need a cleanup callback, now we miss the last one -end - -function tfm.scale(tfmtable, scaledpoints, relativeid) - local t, factor = tfm.do_scale(tfmtable, scaledpoints, relativeid) - t.factor = factor - t.ascender = factor*(tfmtable.ascender or 0) - t.descender = factor*(tfmtable.descender or 0) + -- this will move up (side effect of merging split call) + t.factor = delta + t.ascender = delta*(tfmtable.ascender or 0) + t.descender = delta*(tfmtable.descender or 0) t.shared = tfmtable.shared or { } t.unique = table.fastcopy(tfmtable.unique or {}) ---~ print("scaling", t.name, t.factor) -- , tfm.hash_features(tfmtable.specification)) tfm.cleanup(t) + -- print(t.fontname,table.serialize(t.MathConstants)) return t end @@ -645,10 +642,12 @@ end process features right.</p> --ldx]]-- -fonts.analyzers = fonts.analyzers or { } -fonts.analyzers.aux = fonts.analyzers.aux or { } -fonts.analyzers.methods = fonts.analyzers.methods or { } -fonts.analyzers.initializers = fonts.analyzers.initializers or { } +fonts.analyzers = fonts.analyzers or { } +local analyzers = fonts.analyzers + +analyzers.aux = analyzers.aux or { } +analyzers.methods = analyzers.methods or { } +analyzers.initializers = analyzers.initializers or { } -- todo: analyzers per script/lang, cross font, so we need an font id hash -> script -- e.g. latin -> hyphenate, arab -> 1/2/3 analyze @@ -657,7 +656,7 @@ fonts.analyzers.initializers = fonts.analyzers.initializers or { } local state = attributes.private('state') -function fonts.analyzers.aux.setstate(head,font) +function analyzers.aux.setstate(head,font) local tfmdata = fontdata[font] local characters = tfmdata.characters local descriptions = tfmdata.descriptions @@ -718,7 +717,7 @@ end -- checking -function tfm.checked_filename(metadata,whatever) +function tfm.checkedfilename(metadata,whatever) local foundfilename = metadata.foundfilename if not foundfilename then local askedfilename = metadata.filename or "" |