diff options
Diffstat (limited to 'tex/context/base/font-con.lua')
| -rw-r--r-- | tex/context/base/font-con.lua | 153 |
1 files changed, 52 insertions, 101 deletions
diff --git a/tex/context/base/font-con.lua b/tex/context/base/font-con.lua index 434f64215..7e823c6e2 100644 --- a/tex/context/base/font-con.lua +++ b/tex/context/base/font-con.lua @@ -39,7 +39,6 @@ local contextnumbers = specifiers.contextnumbers -- will be directives -constructors.sharebasekerns = false -- true (.5 sec slower on mk but brings down mem from 410M to 310M, beware: then script/lang share too) constructors.dontembed = allocate() constructors.mathactions = { } constructors.autocleanup = true @@ -97,47 +96,6 @@ in the process; numbers are of course copies. Here 65536 equals 1pt. (Due to excessive memory usage in CJK fonts, we no longer pass the boundingbox.)</p> --ldx]]-- --- the following hack costs a bit of runtime but safes memory --- --- basekerns are scaled and will be hashed by table id --- sharedkerns are unscaled and are be hashed by concatenated indexes - ---~ function constructors.check_base_kerns(tfmdata) ---~ if constructors.sharebasekerns then ---~ local sharedkerns = tfmdata.sharedkerns ---~ if sharedkerns then ---~ local basekerns = { } ---~ tfmdata.basekerns = basekerns ---~ return sharedkerns, basekerns ---~ end ---~ end ---~ return nil, nil ---~ end - ---~ function constructors.prepare_base_kerns(tfmdata) ---~ if constructors.sharebasekerns and not tfmdata.sharedkerns then ---~ local sharedkerns = { } ---~ tfmdata.sharedkerns = sharedkerns ---~ for u, chr in next, tfmdata.characters do ---~ local kerns = chr.kerns ---~ if kerns then ---~ local hash = concat(sortedkeys(kerns), " ") ---~ local base = sharedkerns[hash] ---~ if not base then ---~ sharedkerns[hash] = kerns ---~ else ---~ chr.kerns = base ---~ end ---~ end ---~ end ---~ end ---~ end - --- we can cache scaled characters when we are in node mode and don't have --- protruding and expansion: hash == fullname @ size @ protruding @ expansion --- but in practice (except from mk) the otf hash will be enough already so it --- makes no sense to mess up the code now - -- The scaler is only used for otf and afm and virtual fonts. If -- a virtual font has italic correction make sure to set the -- italic_correction flag. Some more flags will be added in @@ -186,6 +144,34 @@ function constructors.calculatescale(tfmdata,scaledpoints) return scaledpoints, scaledpoints / (parameters.units or 1000) -- delta end +function constructors.assignmathparameters(target,tfmdata) + -- when a tfm file is loaded, it has already been scaled + -- and it never enters the scaled so this is otf only + local mathparameters = original.mathparameters + if mathparameters and next(mathparameters) then + local targetparameters = target.parameters + local targetmathparameters = { } + local factor = targetparameters.factor + for name, value in next, mathparameters do + if name == "RadicalDegreeBottomRaisePercent" then + targetmathparameters[name] = value + else + targetmathparameters[name] = value * factor + end + end + if not targetmathparameters.AccentBaseHeight then + targetmathparameters.AccentBaseHeight = nil -- safeguard, still needed? + end + if not targetmathparameters.FractionDelimiterSize then + targetmathparameters.FractionDelimiterSize = 0 + end + if not mathparameters.FractionDelimiterDisplayStyleSize then + targetmathparameters.FractionDelimiterDisplayStyleSize = 0 + end + target.mathparameters = targetmathparameters + end +end + function constructors.scale(tfmdata,specification) local target = { } -- the new table -- @@ -205,23 +191,22 @@ function constructors.scale(tfmdata,specification) local shared = tfmdata.shared or { } local parameters = tfmdata.parameters or { } local mathparameters = tfmdata.mathparameters or { } - local MathConstants = tfmdata.mathconstants or { } -- local targetcharacters = { } local targetdescriptions = table.derive(descriptions) local targetparameters = table.derive(parameters) - local targetmathparameters = table.derive(mathparameters) + -- local targetmathparameters = table.fastcopy(mathparameters) -- happens elsewhere local targetproperties = table.derive(properties) - local targetgoodies = table.derive(goodies) + local targetgoodies = goodies -- we need to loop so no metatable target.characters = targetcharacters target.descriptions = targetdescriptions target.parameters = targetparameters - target.mathparameters = targetmathparameters + -- target.mathparameters = targetmathparameters -- happens elsewhere target.properties = targetproperties target.goodies = targetgoodies target.shared = shared target.resources = resources - target.unscaled = tfmdata -- the original unscaled one (temp) + target.unscaled = tfmdata -- the original unscaled one -- -- specification.mathsize : 1=text 2=script 3=scriptscript -- specification.textsize : natural (text)size @@ -331,9 +316,9 @@ function constructors.scale(tfmdata,specification) target.slant = 0 end -- + targetparameters.factor = delta targetparameters.hfactor = hdelta targetparameters.vfactor = vdelta - targetparameters.factor = delta targetparameters.size = scaledpoints targetparameters.units = units targetparameters.scaledpoints = askedscaledpoints @@ -350,18 +335,6 @@ function constructors.scale(tfmdata,specification) end -- target.type = isvirtual and "virtual" or "real" - -- more extensive test - local hasmath = (properties.math or next(mathparameters) or next(MathConstants)) and true - if hasmath then - properties.has_math = true - target.nomath = false - target.MathConstants = MathConstants - target.mathconstants = MathConstants - else - properties.has_math = false - target.nomath = true - target.mathparameters = nil -- nop - end -- this will move to some subtable so that it is copied at once target.postprocessors = tfmdata.postprocessors -- @@ -389,45 +362,37 @@ function constructors.scale(tfmdata,specification) if descender then targetparameters.descender = delta * descender end + -- copies, might disappear + targetparameters.xheight = targetparameters.xheight or parameters.x_height + targetparameters.extraspace = targetparameters.extraspace or parameters.extra_space + targetparameters.spacestretch = targetparameters.spacestretch or parameters.space_stretch + targetparameters.spaceshrink = targetparameters.spaceshrink or parameters.space_shrink + -- + local protrusionfactor = (targetquad ~= 0 and 1000/targetquad) or 0 + local scaledwidth = defaultwidth * hdelta + local scaledheight = defaultheight * vdelta + local scaleddepth = defaultdepth * vdelta -- + local hasmath = (properties.has_math or next(mathparameters)) and true if hasmath then - local ma = constructors.mathactions - local ta = type(ma) - if ta == "function" then -- context - ma(target,tfmdata) - elseif ta == "table" then -- generic (we keep the deltas) - for i=1,#ma do - ma[i](target,tfmdata,delta,hdelta,vdelta) - end - end - if not targetparameters[13] then targetparameters[13] = .86*targetx_height end -- mathsupdisplay - if not targetparameters[14] then targetparameters[14] = .86*targetx_height end -- mathsupnormal - if not targetparameters[15] then targetparameters[15] = .86*targetx_height end -- mathsupcramped - if not targetparameters[16] then targetparameters[16] = .48*targetx_height end -- mathsubnormal - if not targetparameters[17] then targetparameters[17] = .48*targetx_height end -- mathsubcombined - if not targetparameters[22] then targetparameters[22] = 0 end -- mathaxisheight - if target.MathConstants then target.MathConstants.AccentBaseHeight = nil end -- safeguard if trace_defining then report_defining("math enabled for: name '%s', fullname: '%s', filename: '%s'", name or "noname",fullname or "nofullname",filename or "nofilename") end + constructors.assignmathparameters(target,tfmdata) -- does scaling and whatever is needed + properties.has_math = true + target.nomath = false + target.MathConstants = target.mathparameters else if trace_defining then report_defining("math disabled for: name '%s', fullname: '%s', filename: '%s'", name or "noname",fullname or "nofullname",filename or "nofilename") end + properties.has_math = false + target.nomath = true + target.mathparameters = nil -- nop end -- - targetparameters.xheight = targetparameters.xheight or parameters.x_height - targetparameters.extraspace = targetparameters.extraspace or parameters.extra_space - targetparameters.spacestretch = targetparameters.spacestretch or parameters.space_stretch - targetparameters.spaceshrink = targetparameters.spaceshrink or parameters.space_shrink - -- - local protrusionfactor = (targetquad ~= 0 and 1000/targetquad) or 0 - local scaledwidth = defaultwidth * hdelta - local scaledheight = defaultheight * vdelta - local scaleddepth = defaultdepth * vdelta - -- local sharedkerns = { } -- for unicode, character in next, characters do @@ -526,7 +491,7 @@ function constructors.scale(tfmdata,specification) if vn then chr.next = vn -- if character.vert_variants or character.horiz_variants then - -- report_defining("glyph 0x%05X has combination of next, vert_variants and horiz_variants",index) + -- report_defining("glyph U+%05X has combination of next, vert_variants and horiz_variants",index) -- end else local vv = character.vert_variants @@ -588,19 +553,6 @@ function constructors.scale(tfmdata,specification) if not nodemode then local vk = character.kerns if vk then - -- if sharedkerns then - -- local base = basekerns[vk] -- hashed by table id, not content - -- if not base then - -- base = {} - -- for k,v in next, vk do base[k] = v*hdelta end - -- basekerns[vk] = base - -- end - -- chr.kerns = base - -- else - -- local tt = {} - -- for k,v in next, vk do tt[k] = v*hdelta end - -- chr.kerns = tt - -- end local s = sharedkerns[vk] if not s then s = { } @@ -757,7 +709,6 @@ function constructors.finalize(tfmdata) -- -- tfmdata.fonts -- tfmdata.unscaled - -- tfmdata.mathconstants -- if not properties.has_math then properties.has_math = not tfmdata.nomath |