1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/reftests/fonts/gsubtest/makegsubfonts.py Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,486 @@
1.4 +
1.5 +import os
1.6 +import textwrap
1.7 +from xml.etree import ElementTree
1.8 +from fontTools.ttLib import TTFont, newTable
1.9 +from fontTools.misc.psCharStrings import T2CharString
1.10 +from fontTools.ttLib.tables.otTables import GSUB,\
1.11 + ScriptList, ScriptRecord, Script, DefaultLangSys,\
1.12 + FeatureList, FeatureRecord, Feature,\
1.13 + LookupList, Lookup, AlternateSubst, SingleSubst
1.14 +
1.15 +# paths
1.16 +directory = os.path.dirname(__file__)
1.17 +shellSourcePath = os.path.join(directory, "gsubtest-shell.ttx")
1.18 +shellTempPath = os.path.join(directory, "gsubtest-shell.otf")
1.19 +featureList = os.path.join(directory, "gsubtest-features.txt")
1.20 +javascriptData = os.path.join(directory, "gsubtest-features.js")
1.21 +outputPath = os.path.join(os.path.dirname(directory), "gsubtest-lookup%d")
1.22 +
1.23 +baseCodepoint = 0xe000
1.24 +
1.25 +# -------
1.26 +# Features
1.27 +# -------
1.28 +
1.29 +f = open(featureList, "rb")
1.30 +text = f.read()
1.31 +f.close()
1.32 +mapping = []
1.33 +for line in text.splitlines():
1.34 + line = line.strip()
1.35 + if not line:
1.36 + continue
1.37 + if line.startswith("#"):
1.38 + continue
1.39 + # parse
1.40 + values = line.split("\t")
1.41 + tag = values.pop(0)
1.42 + mapping.append(tag);
1.43 +
1.44 +# --------
1.45 +# Outlines
1.46 +# --------
1.47 +
1.48 +def addGlyphToCFF(glyphName=None, program=None, private=None, globalSubrs=None, charStringsIndex=None, topDict=None, charStrings=None):
1.49 + charString = T2CharString(program=program, private=private, globalSubrs=globalSubrs)
1.50 + charStringsIndex.append(charString)
1.51 + glyphID = len(topDict.charset)
1.52 + charStrings.charStrings[glyphName] = glyphID
1.53 + topDict.charset.append(glyphName)
1.54 +
1.55 +def makeLookup1():
1.56 + # make a variation of the shell TTX data
1.57 + f = open(shellSourcePath)
1.58 + ttxData = f.read()
1.59 + f.close()
1.60 + ttxData = ttxData.replace("__familyName__", "gsubtest-lookup1")
1.61 + tempShellSourcePath = shellSourcePath + ".temp"
1.62 + f = open(tempShellSourcePath, "wb")
1.63 + f.write(ttxData)
1.64 + f.close()
1.65 +
1.66 + # compile the shell
1.67 + shell = TTFont(sfntVersion="OTTO")
1.68 + shell.importXML(tempShellSourcePath)
1.69 + shell.save(shellTempPath)
1.70 + os.remove(tempShellSourcePath)
1.71 +
1.72 + # load the shell
1.73 + shell = TTFont(shellTempPath)
1.74 +
1.75 + # grab the PASS and FAIL data
1.76 + hmtx = shell["hmtx"]
1.77 + glyphSet = shell.getGlyphSet()
1.78 +
1.79 + failGlyph = glyphSet["F"]
1.80 + failGlyph.decompile()
1.81 + failGlyphProgram = list(failGlyph.program)
1.82 + failGlyphMetrics = hmtx["F"]
1.83 +
1.84 + passGlyph = glyphSet["P"]
1.85 + passGlyph.decompile()
1.86 + passGlyphProgram = list(passGlyph.program)
1.87 + passGlyphMetrics = hmtx["P"]
1.88 +
1.89 + # grab some tables
1.90 + hmtx = shell["hmtx"]
1.91 + cmap = shell["cmap"]
1.92 +
1.93 + # start the glyph order
1.94 + existingGlyphs = [".notdef", "space", "F", "P"]
1.95 + glyphOrder = list(existingGlyphs)
1.96 +
1.97 + # start the CFF
1.98 + cff = shell["CFF "].cff
1.99 + globalSubrs = cff.GlobalSubrs
1.100 + topDict = cff.topDictIndex[0]
1.101 + topDict.charset = existingGlyphs
1.102 + private = topDict.Private
1.103 + charStrings = topDict.CharStrings
1.104 + charStringsIndex = charStrings.charStringsIndex
1.105 +
1.106 + features = sorted(mapping)
1.107 +
1.108 + # build the outline, hmtx and cmap data
1.109 + cp = baseCodepoint
1.110 + for index, tag in enumerate(features):
1.111 +
1.112 + # tag.pass
1.113 + glyphName = "%s.pass" % tag
1.114 + glyphOrder.append(glyphName)
1.115 + addGlyphToCFF(
1.116 + glyphName=glyphName,
1.117 + program=passGlyphProgram,
1.118 + private=private,
1.119 + globalSubrs=globalSubrs,
1.120 + charStringsIndex=charStringsIndex,
1.121 + topDict=topDict,
1.122 + charStrings=charStrings
1.123 + )
1.124 + hmtx[glyphName] = passGlyphMetrics
1.125 +
1.126 + for table in cmap.tables:
1.127 + if table.format == 4:
1.128 + table.cmap[cp] = glyphName
1.129 + else:
1.130 + raise NotImplementedError, "Unsupported cmap table format: %d" % table.format
1.131 + cp += 1
1.132 +
1.133 + # tag.fail
1.134 + glyphName = "%s.fail" % tag
1.135 + glyphOrder.append(glyphName)
1.136 + addGlyphToCFF(
1.137 + glyphName=glyphName,
1.138 + program=failGlyphProgram,
1.139 + private=private,
1.140 + globalSubrs=globalSubrs,
1.141 + charStringsIndex=charStringsIndex,
1.142 + topDict=topDict,
1.143 + charStrings=charStrings
1.144 + )
1.145 + hmtx[glyphName] = failGlyphMetrics
1.146 +
1.147 + for table in cmap.tables:
1.148 + if table.format == 4:
1.149 + table.cmap[cp] = glyphName
1.150 + else:
1.151 + raise NotImplementedError, "Unsupported cmap table format: %d" % table.format
1.152 +
1.153 + # bump this up so that the sequence is the same as the lookup 3 font
1.154 + cp += 3
1.155 +
1.156 + # set the glyph order
1.157 + shell.setGlyphOrder(glyphOrder)
1.158 +
1.159 + # start the GSUB
1.160 + shell["GSUB"] = newTable("GSUB")
1.161 + gsub = shell["GSUB"].table = GSUB()
1.162 + gsub.Version = 1.0
1.163 +
1.164 + # make a list of all the features we will make
1.165 + featureCount = len(features)
1.166 +
1.167 + # set up the script list
1.168 + scriptList = gsub.ScriptList = ScriptList()
1.169 + scriptList.ScriptCount = 1
1.170 + scriptList.ScriptRecord = []
1.171 + scriptRecord = ScriptRecord()
1.172 + scriptList.ScriptRecord.append(scriptRecord)
1.173 + scriptRecord.ScriptTag = "DFLT"
1.174 + script = scriptRecord.Script = Script()
1.175 + defaultLangSys = script.DefaultLangSys = DefaultLangSys()
1.176 + defaultLangSys.FeatureCount = featureCount
1.177 + defaultLangSys.FeatureIndex = range(defaultLangSys.FeatureCount)
1.178 + defaultLangSys.ReqFeatureIndex = 65535
1.179 + defaultLangSys.LookupOrder = None
1.180 + script.LangSysCount = 0
1.181 + script.LangSysRecord = []
1.182 +
1.183 + # set up the feature list
1.184 + featureList = gsub.FeatureList = FeatureList()
1.185 + featureList.FeatureCount = featureCount
1.186 + featureList.FeatureRecord = []
1.187 + for index, tag in enumerate(features):
1.188 + # feature record
1.189 + featureRecord = FeatureRecord()
1.190 + featureRecord.FeatureTag = tag
1.191 + feature = featureRecord.Feature = Feature()
1.192 + featureList.FeatureRecord.append(featureRecord)
1.193 + # feature
1.194 + feature.FeatureParams = None
1.195 + feature.LookupCount = 1
1.196 + feature.LookupListIndex = [index]
1.197 +
1.198 + # write the lookups
1.199 + lookupList = gsub.LookupList = LookupList()
1.200 + lookupList.LookupCount = featureCount
1.201 + lookupList.Lookup = []
1.202 + for tag in features:
1.203 + # lookup
1.204 + lookup = Lookup()
1.205 + lookup.LookupType = 1
1.206 + lookup.LookupFlag = 0
1.207 + lookup.SubTableCount = 1
1.208 + lookup.SubTable = []
1.209 + lookupList.Lookup.append(lookup)
1.210 + # subtable
1.211 + subtable = SingleSubst()
1.212 + subtable.Format = 2
1.213 + subtable.LookupType = 1
1.214 + subtable.mapping = {
1.215 + "%s.pass" % tag : "%s.fail" % tag,
1.216 + "%s.fail" % tag : "%s.pass" % tag,
1.217 + }
1.218 + lookup.SubTable.append(subtable)
1.219 +
1.220 + path = outputPath % 1 + ".otf"
1.221 + if os.path.exists(path):
1.222 + os.remove(path)
1.223 + shell.save(path)
1.224 +
1.225 + # get rid of the shell
1.226 + if os.path.exists(shellTempPath):
1.227 + os.remove(shellTempPath)
1.228 +
1.229 +def makeLookup3():
1.230 + # make a variation of the shell TTX data
1.231 + f = open(shellSourcePath)
1.232 + ttxData = f.read()
1.233 + f.close()
1.234 + ttxData = ttxData.replace("__familyName__", "gsubtest-lookup3")
1.235 + tempShellSourcePath = shellSourcePath + ".temp"
1.236 + f = open(tempShellSourcePath, "wb")
1.237 + f.write(ttxData)
1.238 + f.close()
1.239 +
1.240 + # compile the shell
1.241 + shell = TTFont(sfntVersion="OTTO")
1.242 + shell.importXML(tempShellSourcePath)
1.243 + shell.save(shellTempPath)
1.244 + os.remove(tempShellSourcePath)
1.245 +
1.246 + # load the shell
1.247 + shell = TTFont(shellTempPath)
1.248 +
1.249 + # grab the PASS and FAIL data
1.250 + hmtx = shell["hmtx"]
1.251 + glyphSet = shell.getGlyphSet()
1.252 +
1.253 + failGlyph = glyphSet["F"]
1.254 + failGlyph.decompile()
1.255 + failGlyphProgram = list(failGlyph.program)
1.256 + failGlyphMetrics = hmtx["F"]
1.257 +
1.258 + passGlyph = glyphSet["P"]
1.259 + passGlyph.decompile()
1.260 + passGlyphProgram = list(passGlyph.program)
1.261 + passGlyphMetrics = hmtx["P"]
1.262 +
1.263 + # grab some tables
1.264 + hmtx = shell["hmtx"]
1.265 + cmap = shell["cmap"]
1.266 +
1.267 + # start the glyph order
1.268 + existingGlyphs = [".notdef", "space", "F", "P"]
1.269 + glyphOrder = list(existingGlyphs)
1.270 +
1.271 + # start the CFF
1.272 + cff = shell["CFF "].cff
1.273 + globalSubrs = cff.GlobalSubrs
1.274 + topDict = cff.topDictIndex[0]
1.275 + topDict.charset = existingGlyphs
1.276 + private = topDict.Private
1.277 + charStrings = topDict.CharStrings
1.278 + charStringsIndex = charStrings.charStringsIndex
1.279 +
1.280 + features = sorted(mapping)
1.281 +
1.282 + # build the outline, hmtx and cmap data
1.283 + cp = baseCodepoint
1.284 + for index, tag in enumerate(features):
1.285 +
1.286 + # tag.pass
1.287 + glyphName = "%s.pass" % tag
1.288 + glyphOrder.append(glyphName)
1.289 + addGlyphToCFF(
1.290 + glyphName=glyphName,
1.291 + program=passGlyphProgram,
1.292 + private=private,
1.293 + globalSubrs=globalSubrs,
1.294 + charStringsIndex=charStringsIndex,
1.295 + topDict=topDict,
1.296 + charStrings=charStrings
1.297 + )
1.298 + hmtx[glyphName] = passGlyphMetrics
1.299 +
1.300 + # tag.fail
1.301 + glyphName = "%s.fail" % tag
1.302 + glyphOrder.append(glyphName)
1.303 + addGlyphToCFF(
1.304 + glyphName=glyphName,
1.305 + program=failGlyphProgram,
1.306 + private=private,
1.307 + globalSubrs=globalSubrs,
1.308 + charStringsIndex=charStringsIndex,
1.309 + topDict=topDict,
1.310 + charStrings=charStrings
1.311 + )
1.312 + hmtx[glyphName] = failGlyphMetrics
1.313 +
1.314 + # tag.default
1.315 + glyphName = "%s.default" % tag
1.316 + glyphOrder.append(glyphName)
1.317 + addGlyphToCFF(
1.318 + glyphName=glyphName,
1.319 + program=passGlyphProgram,
1.320 + private=private,
1.321 + globalSubrs=globalSubrs,
1.322 + charStringsIndex=charStringsIndex,
1.323 + topDict=topDict,
1.324 + charStrings=charStrings
1.325 + )
1.326 + hmtx[glyphName] = passGlyphMetrics
1.327 +
1.328 + for table in cmap.tables:
1.329 + if table.format == 4:
1.330 + table.cmap[cp] = glyphName
1.331 + else:
1.332 + raise NotImplementedError, "Unsupported cmap table format: %d" % table.format
1.333 + cp += 1
1.334 +
1.335 + # tag.alt1,2,3
1.336 + for i in range(1,4):
1.337 + glyphName = "%s.alt%d" % (tag, i)
1.338 + glyphOrder.append(glyphName)
1.339 + addGlyphToCFF(
1.340 + glyphName=glyphName,
1.341 + program=failGlyphProgram,
1.342 + private=private,
1.343 + globalSubrs=globalSubrs,
1.344 + charStringsIndex=charStringsIndex,
1.345 + topDict=topDict,
1.346 + charStrings=charStrings
1.347 + )
1.348 + hmtx[glyphName] = failGlyphMetrics
1.349 + for table in cmap.tables:
1.350 + if table.format == 4:
1.351 + table.cmap[cp] = glyphName
1.352 + else:
1.353 + raise NotImplementedError, "Unsupported cmap table format: %d" % table.format
1.354 + cp += 1
1.355 +
1.356 + # set the glyph order
1.357 + shell.setGlyphOrder(glyphOrder)
1.358 +
1.359 + # start the GSUB
1.360 + shell["GSUB"] = newTable("GSUB")
1.361 + gsub = shell["GSUB"].table = GSUB()
1.362 + gsub.Version = 1.0
1.363 +
1.364 + # make a list of all the features we will make
1.365 + featureCount = len(features)
1.366 +
1.367 + # set up the script list
1.368 + scriptList = gsub.ScriptList = ScriptList()
1.369 + scriptList.ScriptCount = 1
1.370 + scriptList.ScriptRecord = []
1.371 + scriptRecord = ScriptRecord()
1.372 + scriptList.ScriptRecord.append(scriptRecord)
1.373 + scriptRecord.ScriptTag = "DFLT"
1.374 + script = scriptRecord.Script = Script()
1.375 + defaultLangSys = script.DefaultLangSys = DefaultLangSys()
1.376 + defaultLangSys.FeatureCount = featureCount
1.377 + defaultLangSys.FeatureIndex = range(defaultLangSys.FeatureCount)
1.378 + defaultLangSys.ReqFeatureIndex = 65535
1.379 + defaultLangSys.LookupOrder = None
1.380 + script.LangSysCount = 0
1.381 + script.LangSysRecord = []
1.382 +
1.383 + # set up the feature list
1.384 + featureList = gsub.FeatureList = FeatureList()
1.385 + featureList.FeatureCount = featureCount
1.386 + featureList.FeatureRecord = []
1.387 + for index, tag in enumerate(features):
1.388 + # feature record
1.389 + featureRecord = FeatureRecord()
1.390 + featureRecord.FeatureTag = tag
1.391 + feature = featureRecord.Feature = Feature()
1.392 + featureList.FeatureRecord.append(featureRecord)
1.393 + # feature
1.394 + feature.FeatureParams = None
1.395 + feature.LookupCount = 1
1.396 + feature.LookupListIndex = [index]
1.397 +
1.398 + # write the lookups
1.399 + lookupList = gsub.LookupList = LookupList()
1.400 + lookupList.LookupCount = featureCount
1.401 + lookupList.Lookup = []
1.402 + for tag in features:
1.403 + # lookup
1.404 + lookup = Lookup()
1.405 + lookup.LookupType = 3
1.406 + lookup.LookupFlag = 0
1.407 + lookup.SubTableCount = 1
1.408 + lookup.SubTable = []
1.409 + lookupList.Lookup.append(lookup)
1.410 + # subtable
1.411 + subtable = AlternateSubst()
1.412 + subtable.Format = 1
1.413 + subtable.LookupType = 3
1.414 + subtable.alternates = {
1.415 + "%s.default" % tag : ["%s.fail" % tag, "%s.fail" % tag, "%s.fail" % tag],
1.416 + "%s.alt1" % tag : ["%s.pass" % tag, "%s.fail" % tag, "%s.fail" % tag],
1.417 + "%s.alt2" % tag : ["%s.fail" % tag, "%s.pass" % tag, "%s.fail" % tag],
1.418 + "%s.alt3" % tag : ["%s.fail" % tag, "%s.fail" % tag, "%s.pass" % tag]
1.419 + }
1.420 + lookup.SubTable.append(subtable)
1.421 +
1.422 + path = outputPath % 3 + ".otf"
1.423 + if os.path.exists(path):
1.424 + os.remove(path)
1.425 + shell.save(path)
1.426 +
1.427 + # get rid of the shell
1.428 + if os.path.exists(shellTempPath):
1.429 + os.remove(shellTempPath)
1.430 +
1.431 +def makeJavascriptData():
1.432 + features = sorted(mapping)
1.433 + outStr = []
1.434 +
1.435 + outStr.append("")
1.436 + outStr.append("/* This file is autogenerated by makegsubfonts.py */")
1.437 + outStr.append("")
1.438 + outStr.append("/* ")
1.439 + outStr.append(" Features defined in gsubtest fonts with associated base")
1.440 + outStr.append(" codepoints for each feature:")
1.441 + outStr.append("")
1.442 + outStr.append(" cp = codepoint for feature featX")
1.443 + outStr.append("")
1.444 + outStr.append(" cp default PASS")
1.445 + outStr.append(" cp featX=1 FAIL")
1.446 + outStr.append(" cp featX=2 FAIL")
1.447 + outStr.append("")
1.448 + outStr.append(" cp+1 default FAIL")
1.449 + outStr.append(" cp+1 featX=1 PASS")
1.450 + outStr.append(" cp+1 featX=2 FAIL")
1.451 + outStr.append("")
1.452 + outStr.append(" cp+2 default FAIL")
1.453 + outStr.append(" cp+2 featX=1 FAIL")
1.454 + outStr.append(" cp+2 featX=2 PASS")
1.455 + outStr.append("")
1.456 + outStr.append("*/")
1.457 + outStr.append("")
1.458 + outStr.append("var gFeatures = {");
1.459 + cp = baseCodepoint
1.460 +
1.461 + taglist = []
1.462 + for tag in features:
1.463 + taglist.append("\"%s\": 0x%x" % (tag, cp))
1.464 + cp += 4
1.465 +
1.466 + outStr.append(textwrap.fill(", ".join(taglist), initial_indent=" ", subsequent_indent=" "))
1.467 + outStr.append("};");
1.468 + outStr.append("");
1.469 +
1.470 + if os.path.exists(javascriptData):
1.471 + os.remove(javascriptData)
1.472 +
1.473 + f = open(javascriptData, "wb")
1.474 + f.write("\n".join(outStr))
1.475 + f.close()
1.476 +
1.477 +
1.478 +# build fonts
1.479 +
1.480 +print "Making lookup type 1 font..."
1.481 +makeLookup1()
1.482 +
1.483 +print "Making lookup type 3 font..."
1.484 +makeLookup3()
1.485 +
1.486 +# output javascript data
1.487 +
1.488 +print "Making javascript data file..."
1.489 +makeJavascriptData()
1.490 \ No newline at end of file
