__all__ = ["FontBuilder"] """ This module is *experimental*, meaning it still may evolve and change. The `FontBuilder` class is a convenient helper to construct working TTF or OTF fonts from scratch. Note that the various setup methods cannot be called in arbitrary order, due to various interdependencies between OpenType tables. Here is an order that works: fb = FontBuilder(...) fb.setupGlyphOrder(...) fb.setupCharacterMap(...) fb.setupGlyf(...) --or-- fb.setupCFF(...) fb.setupHorizontalMetrics(...) fb.setupHorizontalHeader() fb.setupNameTable(...) fb.setupOS2() fb.addOpenTypeFeatures(...) fb.setupPost() fb.save(...) Here is how to build a minimal TTF: ```python from fontTools.fontBuilder import FontBuilder from fontTools.pens.ttGlyphPen import TTGlyphPen def drawTestGlyph(pen): pen.moveTo((100, 100)) pen.lineTo((100, 1000)) pen.qCurveTo((200, 900), (400, 900), (500, 1000)) pen.lineTo((500, 100)) pen.closePath() fb = FontBuilder(1024, isTTF=True) fb.setupGlyphOrder([".notdef", ".null", "space", "A", "a"]) fb.setupCharacterMap({32: "space", 65: "A", 97: "a"}) advanceWidths = {".notdef": 600, "space": 500, "A": 600, "a": 600, ".null": 0} familyName = "HelloTestFont" styleName = "TotallyNormal" version = "0.1" nameStrings = dict( familyName=dict(en=familyName, nl="HalloTestFont"), styleName=dict(en=styleName, nl="TotaalNormaal"), uniqueFontIdentifier="fontBuilder: " + familyName + "." + styleName, fullName=familyName + "-" + styleName, psName=familyName + "-" + styleName, version="Version " + version, ) pen = TTGlyphPen(None) drawTestGlyph(pen) glyph = pen.glyph() glyphs = {".notdef": glyph, "space": glyph, "A": glyph, "a": glyph, ".null": glyph} fb.setupGlyf(glyphs) metrics = {} glyphTable = fb.font["glyf"] for gn, advanceWidth in advanceWidths.items(): metrics[gn] = (advanceWidth, glyphTable[gn].xMin) fb.setupHorizontalMetrics(metrics) fb.setupHorizontalHeader(ascent=824, descent=-200) fb.setupNameTable(nameStrings) fb.setupOS2(sTypoAscender=824, usWinAscent=824, usWinDescent=200) fb.setupPost() fb.save("test.ttf") ``` And here's how to build a minimal OTF: ```python from fontTools.fontBuilder import FontBuilder from fontTools.pens.t2CharStringPen import T2CharStringPen def drawTestGlyph(pen): pen.moveTo((100, 100)) pen.lineTo((100, 1000)) pen.curveTo((200, 900), (400, 900), (500, 1000)) pen.lineTo((500, 100)) pen.closePath() fb = FontBuilder(1024, isTTF=False) fb.setupGlyphOrder([".notdef", ".null", "space", "A", "a"]) fb.setupCharacterMap({32: "space", 65: "A", 97: "a"}) advanceWidths = {".notdef": 600, "space": 500, "A": 600, "a": 600, ".null": 0} familyName = "HelloTestFont" styleName = "TotallyNormal" version = "0.1" nameStrings = dict( familyName=dict(en=familyName, nl="HalloTestFont"), styleName=dict(en=styleName, nl="TotaalNormaal"), uniqueFontIdentifier="fontBuilder: " + familyName + "." + styleName, fullName=familyName + "-" + styleName, psName=familyName + "-" + styleName, version="Version " + version, ) pen = T2CharStringPen(600, None) drawTestGlyph(pen) charString = pen.getCharString() charStrings = { ".notdef": charString, "space": charString, "A": charString, "a": charString, ".null": charString, } fb.setupCFF(nameStrings["psName"], {"FullName": nameStrings["psName"]}, charStrings, {}) lsb = {gn: cs.calcBounds(None)[0] for gn, cs in charStrings.items()} metrics = {} for gn, advanceWidth in advanceWidths.items(): metrics[gn] = (advanceWidth, lsb[gn]) fb.setupHorizontalMetrics(metrics) fb.setupHorizontalHeader(ascent=824, descent=200) fb.setupNameTable(nameStrings) fb.setupOS2(sTypoAscender=824, usWinAscent=824, usWinDescent=200) fb.setupPost() fb.save("test.otf") ``` """ from .ttLib import TTFont, newTable from .ttLib.tables._c_m_a_p import cmap_classes from .ttLib.tables._g_l_y_f import flagCubic from .ttLib.tables.O_S_2f_2 import Panose from .misc.timeTools import timestampNow import struct from collections import OrderedDict _headDefaults = dict( tableVersion=1.0, fontRevision=1.0, checkSumAdjustment=0, magicNumber=0x5F0F3CF5, flags=0x0003, unitsPerEm=1000, created=0, modified=0, xMin=0, yMin=0, xMax=0, yMax=0, macStyle=0, lowestRecPPEM=3, fontDirectionHint=2, indexToLocFormat=0, glyphDataFormat=0, ) _maxpDefaultsTTF = dict( tableVersion=0x00010000, numGlyphs=0, maxPoints=0, maxContours=0, maxCompositePoints=0, maxCompositeContours=0, maxZones=2, maxTwilightPoints=0, maxStorage=0, maxFunctionDefs=0, maxInstructionDefs=0, maxStackElements=0, maxSizeOfInstructions=0, maxComponentElements=0, maxComponentDepth=0, ) _maxpDefaultsOTF = dict( tableVersion=0x00005000, numGlyphs=0, ) _postDefaults = dict( formatType=3.0, italicAngle=0, underlinePosition=0, underlineThickness=0, isFixedPitch=0, minMemType42=0, maxMemType42=0, minMemType1=0, maxMemType1=0, ) _hheaDefaults = dict( tableVersion=0x00010000, ascent=0, descent=0, lineGap=0, advanceWidthMax=0, minLeftSideBearing=0, minRightSideBearing=0, xMaxExtent=0, caretSlopeRise=1, caretSlopeRun=0, caretOffset=0, reserved0=0, reserved1=0, reserved2=0, reserved3=0, metricDataFormat=0, numberOfHMetrics=0, ) _vheaDefaults = dict( tableVersion=0x00010000, ascent=0, descent=0, lineGap=0, advanceHeightMax=0, minTopSideBearing=0, minBottomSideBearing=0, yMaxExtent=0, caretSlopeRise=0, caretSlopeRun=0, reserved0=0, reserved1=0, reserved2=0, reserved3=0, reserved4=0, metricDataFormat=0, numberOfVMetrics=0, ) _nameIDs = dict( copyright=0, familyName=1, styleName=2, uniqueFontIdentifier=3, fullName=4, version=5, psName=6, trademark=7, manufacturer=8, designer=9, description=10, vendorURL=11, designerURL=12, licenseDescription=13, licenseInfoURL=14, # reserved = 15, typographicFamily=16, typographicSubfamily=17, compatibleFullName=18, sampleText=19, postScriptCIDFindfontName=20, wwsFamilyName=21, wwsSubfamilyName=22, lightBackgroundPalette=23, darkBackgroundPalette=24, variationsPostScriptNamePrefix=25, ) # to insert in setupNameTable doc string: # print("\n".join(("%s (nameID %s)" % (k, v)) for k, v in sorted(_nameIDs.items(), key=lambda x: x[1]))) _panoseDefaults = Panose() _OS2Defaults = dict( version=3, xAvgCharWidth=0, usWeightClass=400, usWidthClass=5, fsType=0x0004, # default: Preview & Print embedding ySubscriptXSize=0, ySubscriptYSize=0, ySubscriptXOffset=0, ySubscriptYOffset=0, ySuperscriptXSize=0, ySuperscriptYSize=0, ySuperscriptXOffset=0, ySuperscriptYOffset=0, yStrikeoutSize=0, yStrikeoutPosition=0, sFamilyClass=0, panose=_panoseDefaults, ulUnicodeRange1=0, ulUnicodeRange2=0, ulUnicodeRange3=0, ulUnicodeRange4=0, achVendID="????", fsSelection=0, usFirstCharIndex=0, usLastCharIndex=0, sTypoAscender=0, sTypoDescender=0, sTypoLineGap=0, usWinAscent=0, usWinDescent=0, ulCodePageRange1=0, ulCodePageRange2=0, sxHeight=0, sCapHeight=0, usDefaultChar=0, # .notdef usBreakChar=32, # space usMaxContext=0, usLowerOpticalPointSize=0, usUpperOpticalPointSize=0, ) class FontBuilder(object): def __init__(self, unitsPerEm=None, font=None, isTTF=True, glyphDataFormat=0): """Initialize a FontBuilder instance. If the `font` argument is not given, a new `TTFont` will be constructed, and `unitsPerEm` must be given. If `isTTF` is True, the font will be a glyf-based TTF; if `isTTF` is False it will be a CFF-based OTF. The `glyphDataFormat` argument corresponds to the `head` table field that defines the format of the TrueType `glyf` table (default=0). TrueType glyphs historically can only contain quadratic splines and static components, but there's a proposal to add support for cubic Bezier curves as well as variable composites/components at https://github.com/harfbuzz/boring-expansion-spec/blob/main/glyf1.md You can experiment with the new features by setting `glyphDataFormat` to 1. A ValueError is raised if `glyphDataFormat` is left at 0 but glyphs are added that contain cubic splines or varcomposites. This is to prevent accidentally creating fonts that are incompatible with existing TrueType implementations. If `font` is given, it must be a `TTFont` instance and `unitsPerEm` must _not_ be given. The `isTTF` and `glyphDataFormat` arguments will be ignored. """ if font is None: self.font = TTFont(recalcTimestamp=False) self.isTTF = isTTF now = timestampNow() assert unitsPerEm is not None self.setupHead( unitsPerEm=unitsPerEm, created=now, modified=now, glyphDataFormat=glyphDataFormat, ) self.setupMaxp() else: assert unitsPerEm is None self.font = font self.isTTF = "glyf" in font def save(self, file): """Save the font. The 'file' argument can be either a pathname or a writable file object. """ self.font.save(file) def _initTableWithValues(self, tableTag, defaults, values): table = self.font[tableTag] = newTable(tableTag) for k, v in defaults.items(): setattr(table, k, v) for k, v in values.items(): setattr(table, k, v) return table def _updateTableWithValues(self, tableTag, values): table = self.font[tableTag] for k, v in values.items(): setattr(table, k, v) def setupHead(self, **values): """Create a new `head` table and initialize it with default values, which can be overridden by keyword arguments. """ self._initTableWithValues("head", _headDefaults, values) def updateHead(self, **values): """Update the head table with the fields and values passed as keyword arguments. """ self._updateTableWithValues("head", values) def setupGlyphOrder(self, glyphOrder): """Set the glyph order for the font.""" self.font.setGlyphOrder(glyphOrder) def setupCharacterMap(self, cmapping, uvs=None, allowFallback=False): """Build the `cmap` table for the font. The `cmapping` argument should be a dict mapping unicode code points as integers to glyph names. The `uvs` argument, when passed, must be a list of tuples, describing Unicode Variation Sequences. These tuples have three elements: (unicodeValue, variationSelector, glyphName) `unicodeValue` and `variationSelector` are integer code points. `glyphName` may be None, to indicate this is the default variation. Text processors will then use the cmap to find the glyph name. Each Unicode Variation Sequence should be an officially supported sequence, but this is not policed. """ subTables = [] highestUnicode = max(cmapping) if cmapping else 0 if highestUnicode > 0xFFFF: cmapping_3_1 = dict((k, v) for k, v in cmapping.items() if k < 0x10000) subTable_3_10 = buildCmapSubTable(cmapping, 12, 3, 10) subTables.append(subTable_3_10) else: cmapping_3_1 = cmapping format = 4 subTable_3_1 = buildCmapSubTable(cmapping_3_1, format, 3, 1) try: subTable_3_1.compile(self.font) except struct.error: # format 4 overflowed, fall back to format 12 if not allowFallback: raise ValueError( "cmap format 4 subtable overflowed; sort glyph order by unicode to fix." ) format = 12 subTable_3_1 = buildCmapSubTable(cmapping_3_1, format, 3, 1) subTables.append(subTable_3_1) subTable_0_3 = buildCmapSubTable(cmapping_3_1, format, 0, 3) subTables.append(subTable_0_3) if uvs is not None: uvsDict = {} for unicodeValue, variationSelector, glyphName in uvs: if cmapping.get(unicodeValue) == glyphName: # this is a default variation glyphName = None if variationSelector not in uvsDict: uvsDict[variationSelector] = [] uvsDict[variationSelector].append((unicodeValue, glyphName)) uvsSubTable = buildCmapSubTable({}, 14, 0, 5) uvsSubTable.uvsDict = uvsDict subTables.append(uvsSubTable) self.font["cmap"] = newTable("cmap") self.font["cmap"].tableVersion = 0 self.font["cmap"].tables = subTables def setupNameTable(self, nameStrings, windows=True, mac=True): """Create the `name` table for the font. The `nameStrings` argument must be a dict, mapping nameIDs or descriptive names for the nameIDs to name record values. A value is either a string, or a dict, mapping language codes to strings, to allow localized name table entries. By default, both Windows (platformID=3) and Macintosh (platformID=1) name records are added, unless any of `windows` or `mac` arguments is False. The following descriptive names are available for nameIDs: copyright (nameID 0) familyName (nameID 1) styleName (nameID 2) uniqueFontIdentifier (nameID 3) fullName (nameID 4) version (nameID 5) psName (nameID 6) trademark (nameID 7) manufacturer (nameID 8) designer (nameID 9) description (nameID 10) vendorURL (nameID 11) designerURL (nameID 12) licenseDescription (nameID 13) licenseInfoURL (nameID 14) typographicFamily (nameID 16) typographicSubfamily (nameID 17) compatibleFullName (nameID 18) sampleText (nameID 19) postScriptCIDFindfontName (nameID 20) wwsFamilyName (nameID 21) wwsSubfamilyName (nameID 22) lightBackgroundPalette (nameID 23) darkBackgroundPalette (nameID 24) variationsPostScriptNamePrefix (nameID 25) """ nameTable = self.font["name"] = newTable("name") nameTable.names = [] for nameName, nameValue in nameStrings.items(): if isinstance(nameName, int): nameID = nameName else: nameID = _nameIDs[nameName] if isinstance(nameValue, str): nameValue = dict(en=nameValue) nameTable.addMultilingualName( nameValue, ttFont=self.font, nameID=nameID, windows=windows, mac=mac ) def setupOS2(self, **values): """Create a new `OS/2` table and initialize it with default values, which can be overridden by keyword arguments. """ self._initTableWithValues("OS/2", _OS2Defaults, values) if "xAvgCharWidth" not in values: assert ( "hmtx" in self.font ), "the 'hmtx' table must be setup before the 'OS/2' table" self.font["OS/2"].recalcAvgCharWidth(self.font) if not ( "ulUnicodeRange1" in values or "ulUnicodeRange2" in values or "ulUnicodeRange3" in values or "ulUnicodeRange3" in values ): assert ( "cmap" in self.font ), "the 'cmap' table must be setup before the 'OS/2' table" self.font["OS/2"].recalcUnicodeRanges(self.font) def setupCFF(self, psName, fontInfo, charStringsDict, privateDict): from .cffLib import ( CFFFontSet, TopDictIndex, TopDict, CharStrings, GlobalSubrsIndex, PrivateDict, ) assert not self.isTTF self.font.sfntVersion = "OTTO" fontSet = CFFFontSet() fontSet.major = 1 fontSet.minor = 0 fontSet.otFont = self.font fontSet.fontNames = [psName] fontSet.topDictIndex = TopDictIndex() globalSubrs = GlobalSubrsIndex() fontSet.GlobalSubrs = globalSubrs private = PrivateDict() for key, value in privateDict.items(): setattr(private, key, value) fdSelect = None fdArray = None topDict = TopDict() topDict.charset = self.font.getGlyphOrder() topDict.Private = private topDict.GlobalSubrs = fontSet.GlobalSubrs for key, value in fontInfo.items(): setattr(topDict, key, value) if "FontMatrix" not in fontInfo: scale = 1 / self.font["head"].unitsPerEm topDict.FontMatrix = [scale, 0, 0, scale, 0, 0] charStrings = CharStrings( None, topDict.charset, globalSubrs, private, fdSelect, fdArray ) for glyphName, charString in charStringsDict.items(): charString.private = private charString.globalSubrs = globalSubrs charStrings[glyphName] = charString topDict.CharStrings = charStrings fontSet.topDictIndex.append(topDict) self.font["CFF "] = newTable("CFF ") self.font["CFF "].cff = fontSet def setupCFF2(self, charStringsDict, fdArrayList=None, regions=None): from .cffLib import ( CFFFontSet, TopDictIndex, TopDict, CharStrings, GlobalSubrsIndex, PrivateDict, FDArrayIndex, FontDict, ) assert not self.isTTF self.font.sfntVersion = "OTTO" fontSet = CFFFontSet() fontSet.major = 2 fontSet.minor = 0 cff2GetGlyphOrder = self.font.getGlyphOrder fontSet.topDictIndex = TopDictIndex(None, cff2GetGlyphOrder, None) globalSubrs = GlobalSubrsIndex() fontSet.GlobalSubrs = globalSubrs if fdArrayList is None: fdArrayList = [{}] fdSelect = None fdArray = FDArrayIndex() fdArray.strings = None fdArray.GlobalSubrs = globalSubrs for privateDict in fdArrayList: fontDict = FontDict() fontDict.setCFF2(True) private = PrivateDict() for key, value in privateDict.items(): setattr(private, key, value) fontDict.Private = private fdArray.append(fontDict) topDict = TopDict() topDict.cff2GetGlyphOrder = cff2GetGlyphOrder topDict.FDArray = fdArray scale = 1 / self.font["head"].unitsPerEm topDict.FontMatrix = [scale, 0, 0, scale, 0, 0] private = fdArray[0].Private charStrings = CharStrings(None, None, globalSubrs, private, fdSelect, fdArray) for glyphName, charString in charStringsDict.items(): charString.private = private charString.globalSubrs = globalSubrs charStrings[glyphName] = charString topDict.CharStrings = charStrings fontSet.topDictIndex.append(topDict) self.font["CFF2"] = newTable("CFF2") self.font["CFF2"].cff = fontSet if regions: self.setupCFF2Regions(regions) def setupCFF2Regions(self, regions): from .varLib.builder import buildVarRegionList, buildVarData, buildVarStore from .cffLib import VarStoreData assert "fvar" in self.font, "fvar must to be set up first" assert "CFF2" in self.font, "CFF2 must to be set up first" axisTags = [a.axisTag for a in self.font["fvar"].axes] varRegionList = buildVarRegionList(regions, axisTags) varData = buildVarData(list(range(len(regions))), None, optimize=False) varStore = buildVarStore(varRegionList, [varData]) vstore = VarStoreData(otVarStore=varStore) topDict = self.font["CFF2"].cff.topDictIndex[0] topDict.VarStore = vstore for fontDict in topDict.FDArray: fontDict.Private.vstore = vstore def setupGlyf(self, glyphs, calcGlyphBounds=True, validateGlyphFormat=True): """Create the `glyf` table from a dict, that maps glyph names to `fontTools.ttLib.tables._g_l_y_f.Glyph` objects, for example as made by `fontTools.pens.ttGlyphPen.TTGlyphPen`. If `calcGlyphBounds` is True, the bounds of all glyphs will be calculated. Only pass False if your glyph objects already have their bounding box values set. If `validateGlyphFormat` is True, raise ValueError if any of the glyphs contains cubic curves or is a variable composite but head.glyphDataFormat=0. Set it to False to skip the check if you know in advance all the glyphs are compatible with the specified glyphDataFormat. """ assert self.isTTF if validateGlyphFormat and self.font["head"].glyphDataFormat == 0: for name, g in glyphs.items(): if g.numberOfContours > 0 and any(f & flagCubic for f in g.flags): raise ValueError( f"Glyph {name!r} has cubic Bezier outlines, but glyphDataFormat=0; " "either convert to quadratics with cu2qu or set glyphDataFormat=1." ) self.font["loca"] = newTable("loca") self.font["glyf"] = newTable("glyf") self.font["glyf"].glyphs = glyphs if hasattr(self.font, "glyphOrder"): self.font["glyf"].glyphOrder = self.font.glyphOrder if calcGlyphBounds: self.calcGlyphBounds() def setupFvar(self, axes, instances): """Adds an font variations table to the font. Args: axes (list): See below. instances (list): See below. ``axes`` should be a list of axes, with each axis either supplied as a py:class:`.designspaceLib.AxisDescriptor` object, or a tuple in the format ```tupletag, minValue, defaultValue, maxValue, name``. The ``name`` is either a string, or a dict, mapping language codes to strings, to allow localized name table entries. ```instances`` should be a list of instances, with each instance either supplied as a py:class:`.designspaceLib.InstanceDescriptor` object, or a dict with keys ``location`` (mapping of axis tags to float values), ``stylename`` and (optionally) ``postscriptfontname``. The ``stylename`` is either a string, or a dict, mapping language codes to strings, to allow localized name table entries. """ addFvar(self.font, axes, instances) def setupAvar(self, axes, mappings=None): """Adds an axis variations table to the font. Args: axes (list): A list of py:class:`.designspaceLib.AxisDescriptor` objects. """ from .varLib import _add_avar if "fvar" not in self.font: raise KeyError("'fvar' table is missing; can't add 'avar'.") axisTags = [axis.axisTag for axis in self.font["fvar"].axes] axes = OrderedDict(enumerate(axes)) # Only values are used _add_avar(self.font, axes, mappings, axisTags) def setupGvar(self, variations): gvar = self.font["gvar"] = newTable("gvar") gvar.version = 1 gvar.reserved = 0 gvar.variations = variations def calcGlyphBounds(self): """Calculate the bounding boxes of all glyphs in the `glyf` table. This is usually not called explicitly by client code. """ glyphTable = self.font["glyf"] for glyph in glyphTable.glyphs.values(): glyph.recalcBounds(glyphTable) def setupHorizontalMetrics(self, metrics): """Create a new `hmtx` table, for horizontal metrics. The `metrics` argument must be a dict, mapping glyph names to `(width, leftSidebearing)` tuples. """ self.setupMetrics("hmtx", metrics) def setupVerticalMetrics(self, metrics): """Create a new `vmtx` table, for horizontal metrics. The `metrics` argument must be a dict, mapping glyph names to `(height, topSidebearing)` tuples. """ self.setupMetrics("vmtx", metrics) def setupMetrics(self, tableTag, metrics): """See `setupHorizontalMetrics()` and `setupVerticalMetrics()`.""" assert tableTag in ("hmtx", "vmtx") mtxTable = self.font[tableTag] = newTable(tableTag) roundedMetrics = {} for gn in metrics: w, lsb = metrics[gn] roundedMetrics[gn] = int(round(w)), int(round(lsb)) mtxTable.metrics = roundedMetrics def setupHorizontalHeader(self, **values): """Create a new `hhea` table initialize it with default values, which can be overridden by keyword arguments. """ self._initTableWithValues("hhea", _hheaDefaults, values) def setupVerticalHeader(self, **values): """Create a new `vhea` table initialize it with default values, which can be overridden by keyword arguments. """ self._initTableWithValues("vhea", _vheaDefaults, values) def setupVerticalOrigins(self, verticalOrigins, defaultVerticalOrigin=None): """Create a new `VORG` table. The `verticalOrigins` argument must be a dict, mapping glyph names to vertical origin values. The `defaultVerticalOrigin` argument should be the most common vertical origin value. If omitted, this value will be derived from the actual values in the `verticalOrigins` argument. """ if defaultVerticalOrigin is None: # find the most frequent vorg value bag = {} for gn in verticalOrigins: vorg = verticalOrigins[gn] if vorg not in bag: bag[vorg] = 1 else: bag[vorg] += 1 defaultVerticalOrigin = sorted( bag, key=lambda vorg: bag[vorg], reverse=True )[0] self._initTableWithValues( "VORG", {}, dict(VOriginRecords={}, defaultVertOriginY=defaultVerticalOrigin), ) vorgTable = self.font["VORG"] vorgTable.majorVersion = 1 vorgTable.minorVersion = 0 for gn in verticalOrigins: vorgTable[gn] = verticalOrigins[gn] def setupPost(self, keepGlyphNames=True, **values): """Create a new `post` table and initialize it with default values, which can be overridden by keyword arguments. """ isCFF2 = "CFF2" in self.font postTable = self._initTableWithValues("post", _postDefaults, values) if (self.isTTF or isCFF2) and keepGlyphNames: postTable.formatType = 2.0 postTable.extraNames = [] postTable.mapping = {} else: postTable.formatType = 3.0 def setupMaxp(self): """Create a new `maxp` table. This is called implicitly by FontBuilder itself and is usually not called by client code. """ if self.isTTF: defaults = _maxpDefaultsTTF else: defaults = _maxpDefaultsOTF self._initTableWithValues("maxp", defaults, {}) def setupDummyDSIG(self): """This adds an empty DSIG table to the font to make some MS applications happy. This does not properly sign the font. """ values = dict( ulVersion=1, usFlag=0, usNumSigs=0, signatureRecords=[], ) self._initTableWithValues("DSIG", {}, values) def addOpenTypeFeatures(self, features, filename=None, tables=None, debug=False): """Add OpenType features to the font from a string containing Feature File syntax. The `filename` argument is used in error messages and to determine where to look for "include" files. The optional `tables` argument can be a list of OTL tables tags to build, allowing the caller to only build selected OTL tables. See `fontTools.feaLib` for details. The optional `debug` argument controls whether to add source debugging information to the font in the `Debg` table. """ from .feaLib.builder import addOpenTypeFeaturesFromString addOpenTypeFeaturesFromString( self.font, features, filename=filename, tables=tables, debug=debug ) def addFeatureVariations(self, conditionalSubstitutions, featureTag="rvrn"): """Add conditional substitutions to a Variable Font. See `fontTools.varLib.featureVars.addFeatureVariations`. """ from .varLib import featureVars if "fvar" not in self.font: raise KeyError("'fvar' table is missing; can't add FeatureVariations.") featureVars.addFeatureVariations( self.font, conditionalSubstitutions, featureTag=featureTag ) def setupCOLR( self, colorLayers, version=None, varStore=None, varIndexMap=None, clipBoxes=None, allowLayerReuse=True, ): """Build new COLR table using color layers dictionary. Cf. `fontTools.colorLib.builder.buildCOLR`. """ from fontTools.colorLib.builder import buildCOLR glyphMap = self.font.getReverseGlyphMap() self.font["COLR"] = buildCOLR( colorLayers, version=version, glyphMap=glyphMap, varStore=varStore, varIndexMap=varIndexMap, clipBoxes=clipBoxes, allowLayerReuse=allowLayerReuse, ) def setupCPAL( self, palettes, paletteTypes=None, paletteLabels=None, paletteEntryLabels=None, ): """Build new CPAL table using list of palettes. Optionally build CPAL v1 table using paletteTypes, paletteLabels and paletteEntryLabels. Cf. `fontTools.colorLib.builder.buildCPAL`. """ from fontTools.colorLib.builder import buildCPAL self.font["CPAL"] = buildCPAL( palettes, paletteTypes=paletteTypes, paletteLabels=paletteLabels, paletteEntryLabels=paletteEntryLabels, nameTable=self.font.get("name"), ) def setupStat(self, axes, locations=None, elidedFallbackName=2): """Build a new 'STAT' table. See `fontTools.otlLib.builder.buildStatTable` for details about the arguments. """ from .otlLib.builder import buildStatTable buildStatTable(self.font, axes, locations, elidedFallbackName) def buildCmapSubTable(cmapping, format, platformID, platEncID): subTable = cmap_classes[format](format) subTable.cmap = cmapping subTable.platformID = platformID subTable.platEncID = platEncID subTable.language = 0 return subTable def addFvar(font, axes, instances): from .ttLib.tables._f_v_a_r import Axis, NamedInstance assert axes fvar = newTable("fvar") nameTable = font["name"] for axis_def in axes: axis = Axis() if isinstance(axis_def, tuple): ( axis.axisTag, axis.minValue, axis.defaultValue, axis.maxValue, name, ) = axis_def else: (axis.axisTag, axis.minValue, axis.defaultValue, axis.maxValue, name) = ( axis_def.tag, axis_def.minimum, axis_def.default, axis_def.maximum, axis_def.name, ) if axis_def.hidden: axis.flags = 0x0001 # HIDDEN_AXIS if isinstance(name, str): name = dict(en=name) axis.axisNameID = nameTable.addMultilingualName(name, ttFont=font) fvar.axes.append(axis) for instance in instances: if isinstance(instance, dict): coordinates = instance["location"] name = instance["stylename"] psname = instance.get("postscriptfontname") else: coordinates = instance.location name = instance.localisedStyleName or instance.styleName psname = instance.postScriptFontName if isinstance(name, str): name = dict(en=name) inst = NamedInstance() inst.subfamilyNameID = nameTable.addMultilingualName(name, ttFont=font) if psname is not None: inst.postscriptNameID = nameTable.addName(psname) inst.coordinates = coordinates fvar.instances.append(inst) font["fvar"] = fvar