diff options
Diffstat (limited to 'tex/context/base/math-act.lua')
| -rw-r--r-- | tex/context/base/math-act.lua | 94 |
1 files changed, 84 insertions, 10 deletions
diff --git a/tex/context/base/math-act.lua b/tex/context/base/math-act.lua index 84549ca52..8cc2c20cc 100644 --- a/tex/context/base/math-act.lua +++ b/tex/context/base/math-act.lua @@ -12,18 +12,22 @@ local type, next = type, next local fastcopy = table.fastcopy local formatters = string.formatters -local trace_defining = false trackers.register("math.defining", function(v) trace_defining = v end) -local report_math = logs.reporter("mathematics","initializing") +local trace_defining = false trackers.register("math.defining", function(v) trace_defining = v end) +local trace_collecting = false trackers.register("math.collecting", function(v) trace_collecting = v end) -local context = context -local commands = commands -local mathematics = mathematics -local texsetdimen = tex.setdimen -local abs = math.abs +local report_math = logs.reporter("mathematics","initializing") -local sequencers = utilities.sequencers -local appendgroup = sequencers.appendgroup -local appendaction = sequencers.appendaction +local context = context +local commands = commands +local mathematics = mathematics +local texsetdimen = tex.setdimen +local abs = math.abs + +local sequencers = utilities.sequencers +local appendgroup = sequencers.appendgroup +local appendaction = sequencers.appendaction + +local fontchars = fonts.hashes.characters local mathfontparameteractions = sequencers.new { name = "mathparameters", @@ -505,3 +509,73 @@ function commands.horizontalcode(family,unicode) texsetdimen("scratchrightoffset",roffset) context(kind) end + +-- experiment + +function mathematics.injectfallbacks(target,original) + local specification = target.specification + if specification then + local fallbacks = specification.fallbacks + if fallbacks then + local definitions = fonts.collections.definitions[fallbacks] + if definitions then + local definedfont = fonts.definers.internal + local copiedglyph = fonts.handlers.vf.math.copy_glyph + local fonts = target.fonts + local size = specification.size -- target.size + local characters = target.characters + if not fonts then + fonts = { } + target.fonts = fonts + target.type = "virtual" + target.properties.virtualized = true + end + if #fonts == 0 then + fonts[1] = { id = 0, size = size } -- sel, will be resolved later + end + local done = { } + for i=1,#definitions do + local definition = definitions[i] + local name = definition.font + local id = definedfont { name = name, size = size } + local index = #fonts + 1 + fonts[index] = { id = id, size = size } + local first = definition.first or definition.start or definition.code + local last = definition.last or definition.stop or first + if first then + local chars = fontchars[id] + local check = toboolean(definition.check or "false",true) + local force = toboolean(definition.force or "true",true) + -- check: when true, only set when present in font + -- force: when false, then not set when already set + if check then + for unicode = first, last do + if chars[unicode] then + -- not in font + elseif force or (not done[unicode] and not characters[unicode]) then + if trace_collecting then + report_math("remapping math character, vector %a, font %a, character %C, %s",fallbacks,name,unicode,"checked") + end + characters[unicode] = copiedglyph(target,characters,chars,unicode,index) + done[unicode] = true + end + end + else + for unicode = first, last do + if force or (not done[unicode] and not characters[unicode]) then + if trace_collecting then + report_math("remapping math character, vector %a, font %a, character %C, %s",fallbacks,name,unicode,"unchecked") + end + characters[unicode] = copiedglyph(target,characters,chars,unicode,index) + done[unicode] = true + end + end + end + end + end + end + end + end +end + +sequencers.appendaction("aftercopyingcharacters", "system","mathematics.injectfallbacks") |