/usr/lib/python3/dist-packages/ufo2ft/outlineCompiler.py is in python3-ufo2ft 1.1.0-1.
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from fontTools.misc.py23 import tounicode, round, BytesIO
import logging
import math
from collections import Counter, namedtuple
from fontTools.ttLib import TTFont, newTable
from fontTools.cffLib import (
TopDictIndex, TopDict, CharStrings, SubrsIndex, GlobalSubrsIndex,
PrivateDict, IndexedStrings)
from fontTools.pens.boundsPen import ControlBoundsPen
from fontTools.pens.t2CharStringPen import T2CharStringPen
from fontTools.pens.ttGlyphPen import TTGlyphPen
from fontTools.ttLib.tables.O_S_2f_2 import Panose
from fontTools.ttLib.tables._h_e_a_d import mac_epoch_diff
from fontTools.ttLib.tables._g_l_y_f import Glyph, USE_MY_METRICS
from fontTools.misc.arrayTools import unionRect
from ufo2ft.fontInfoData import (
getAttrWithFallback, dateStringToTimeValue, dateStringForNow,
intListToNum, normalizeStringForPostscript)
from ufo2ft.util import makeOfficialGlyphOrder
logger = logging.getLogger(__name__)
BoundingBox = namedtuple("BoundingBox", ["xMin", "yMin", "xMax", "yMax"])
def _isNonBMP(s):
for c in s:
if ord(c) > 65535:
return True
return False
def _getVerticalOrigin(glyph):
height = glyph.height
if (hasattr(glyph, "verticalOrigin") and
glyph.verticalOrigin is not None):
verticalOrigin = glyph.verticalOrigin
else:
verticalOrigin = height
return round(verticalOrigin)
class BaseOutlineCompiler(object):
"""Create a feature-less outline binary."""
sfntVersion = None
def __init__(self, font, glyphSet=None, glyphOrder=None):
self.ufo = font
# use the previously filtered glyphSet, if any
if glyphSet is None:
glyphSet = {g.name: g for g in font}
self.makeMissingRequiredGlyphs(font, glyphSet)
self.allGlyphs = glyphSet
# store the glyph order
if glyphOrder is None:
glyphOrder = font.glyphOrder
self.glyphOrder = self.makeOfficialGlyphOrder(glyphOrder)
# make reusable glyphs/font bounding boxes
self.glyphBoundingBoxes = self.makeGlyphsBoundingBoxes()
self.fontBoundingBox = self.makeFontBoundingBox()
# make a reusable character mapping
self.unicodeToGlyphNameMapping = self.makeUnicodeToGlyphNameMapping()
def compile(self):
"""
Compile the OpenType binary.
"""
self.otf = TTFont(sfntVersion=self.sfntVersion)
self.vertical = False
for glyph in self.allGlyphs.values():
if (hasattr(glyph, "verticalOrigin") and
glyph.verticalOrigin is not None):
self.vertical = True
break
# populate basic tables
self.setupTable_head()
self.setupTable_hmtx()
self.setupTable_hhea()
self.setupTable_name()
self.setupTable_maxp()
self.setupTable_cmap()
self.setupTable_OS2()
self.setupTable_post()
if self.vertical:
self.setupTable_vmtx()
self.setupTable_vhea()
self.setupOtherTables()
self.importTTX()
return self.otf
def makeGlyphsBoundingBoxes(self):
"""
Make bounding boxes for all the glyphs, and return a dictionary of
BoundingBox(xMin, xMax, yMin, yMax) namedtuples keyed by glyph names.
The bounding box of empty glyphs (without contours or components) is
set to None.
Float values are rounded to integers using the built-in round().
**This should not be called externally.** Subclasses
may override this method to handle the bounds creation
in a different way if desired.
"""
def getControlPointBounds(glyph):
pen.init()
glyph.draw(pen)
return pen.bounds
glyphBoxes = {}
pen = ControlBoundsPen(self.allGlyphs)
for glyphName, glyph in self.allGlyphs.items():
bounds = None
if glyph or glyph.components:
bounds = getControlPointBounds(glyph)
if bounds:
bounds = BoundingBox(*(round(v) for v in bounds))
glyphBoxes[glyphName] = bounds
return glyphBoxes
def makeFontBoundingBox(self):
"""
Make a bounding box for the font.
**This should not be called externally.** Subclasses
may override this method to handle the bounds creation
in a different way if desired.
"""
if not hasattr(self, "glyphBoundingBoxes"):
self.glyphBoundingBoxes = self.makeGlyphsBoundingBoxes()
fontBox = None
for glyphName, glyphBox in self.glyphBoundingBoxes.items():
if glyphBox is None:
continue
if fontBox is None:
fontBox = glyphBox
else:
fontBox = unionRect(fontBox, glyphBox)
if fontBox is None: # unlikely
fontBox = BoundingBox(0, 0, 0, 0)
return fontBox
def makeUnicodeToGlyphNameMapping(self):
"""
Make a ``unicode : glyph name`` mapping for the font.
**This should not be called externally.** Subclasses
may override this method to handle the mapping creation
in a different way if desired.
"""
mapping = {}
for glyphName, glyph in self.allGlyphs.items():
unicodes = glyph.unicodes
for uni in unicodes:
mapping[uni] = glyphName
return mapping
@staticmethod
def makeMissingRequiredGlyphs(font, glyphSet):
"""
Add .notdef to the glyph set if it is not present.
**This should not be called externally.** Subclasses
may override this method to handle the glyph creation
in a different way if desired.
"""
if ".notdef" in glyphSet:
return
unitsPerEm = round(getAttrWithFallback(font.info, "unitsPerEm"))
ascender = round(getAttrWithFallback(font.info, "ascender"))
descender = round(getAttrWithFallback(font.info, "descender"))
defaultWidth = round(unitsPerEm * 0.5)
glyphSet[".notdef"] = StubGlyph(name=".notdef",
width=defaultWidth,
unitsPerEm=unitsPerEm,
ascender=ascender,
descender=descender)
def makeOfficialGlyphOrder(self, glyphOrder):
"""
Make the final glyph order.
**This should not be called externally.** Subclasses
may override this method to handle the order creation
in a different way if desired.
"""
return makeOfficialGlyphOrder(self.allGlyphs, glyphOrder)
# --------------
# Table Builders
# --------------
def setupTable_gasp(self):
self.otf["gasp"] = gasp = newTable("gasp")
gasp_ranges = dict()
for record in self.ufo.info.openTypeGaspRangeRecords:
rangeMaxPPEM = record["rangeMaxPPEM"]
behavior_bits = record["rangeGaspBehavior"]
rangeGaspBehavior = intListToNum(behavior_bits, 0, 4)
gasp_ranges[rangeMaxPPEM] = rangeGaspBehavior
gasp.gaspRange = gasp_ranges
def setupTable_head(self):
"""
Make the head table.
**This should not be called externally.** Subclasses
may override or supplement this method to handle the
table creation in a different way if desired.
"""
self.otf["head"] = head = newTable("head")
font = self.ufo
head.checkSumAdjustment = 0
head.tableVersion = 1.0
head.magicNumber = 0x5F0F3CF5
# version numbers
# limit minor version to 3 digits as recommended in OpenType spec:
# https://www.microsoft.com/typography/otspec/recom.htm
versionMajor = getAttrWithFallback(font.info, "versionMajor")
versionMinor = getAttrWithFallback(font.info, "versionMinor")
fullFontRevision = float("%d.%03d" % (versionMajor, versionMinor))
head.fontRevision = round(fullFontRevision, 3)
if head.fontRevision != fullFontRevision:
logger.warning(
"Minor version in %s has too many digits and won't fit into "
"the head table's fontRevision field; rounded to %s.",
fullFontRevision, head.fontRevision)
# upm
head.unitsPerEm = round(getAttrWithFallback(font.info, "unitsPerEm"))
# times
head.created = dateStringToTimeValue(getAttrWithFallback(font.info, "openTypeHeadCreated")) - mac_epoch_diff
head.modified = dateStringToTimeValue(dateStringForNow()) - mac_epoch_diff
# bounding box
xMin, yMin, xMax, yMax = self.fontBoundingBox
head.xMin = round(xMin)
head.yMin = round(yMin)
head.xMax = round(xMax)
head.yMax = round(yMax)
# style mapping
styleMapStyleName = getAttrWithFallback(font.info, "styleMapStyleName")
macStyle = []
if styleMapStyleName == "bold":
macStyle = [0]
elif styleMapStyleName == "bold italic":
macStyle = [0, 1]
elif styleMapStyleName == "italic":
macStyle = [1]
head.macStyle = intListToNum(macStyle, 0, 16)
# misc
head.flags = intListToNum(getAttrWithFallback(font.info, "openTypeHeadFlags"), 0, 16)
head.lowestRecPPEM = round(getAttrWithFallback(font.info, "openTypeHeadLowestRecPPEM"))
head.fontDirectionHint = 2
head.indexToLocFormat = 0
head.glyphDataFormat = 0
def setupTable_name(self):
"""
Make the name table.
**This should not be called externally.** Subclasses
may override or supplement this method to handle the
table creation in a different way if desired.
"""
font = self.ufo
self.otf["name"] = name = newTable("name")
name.names = []
# Set name records from font.info.openTypeNameRecords
for nameRecord in getAttrWithFallback(
font.info, "openTypeNameRecords"):
nameId = nameRecord["nameID"]
platformId = nameRecord["platformID"]
platEncId = nameRecord["encodingID"]
langId = nameRecord["languageID"]
# on Python 2, plistLib (used by ufoLib) returns unicode strings
# only when plist data contain non-ascii characters, and returns
# ascii-encoded bytes when it can. On the other hand, fontTools's
# name table `setName` method wants unicode strings, so we must
# decode them first
nameVal = tounicode(nameRecord["string"], encoding='ascii')
name.setName(nameVal, nameId, platformId, platEncId, langId)
# Build name records
familyName = getAttrWithFallback(font.info, "styleMapFamilyName")
styleName = getAttrWithFallback(font.info, "styleMapStyleName").title()
preferredFamilyName = getAttrWithFallback(
font.info, "openTypeNamePreferredFamilyName")
preferredSubfamilyName = getAttrWithFallback(
font.info, "openTypeNamePreferredSubfamilyName")
fullName = "%s %s" % (preferredFamilyName, preferredSubfamilyName)
nameVals = {
0: getAttrWithFallback(font.info, "copyright"),
1: familyName,
2: styleName,
3: getAttrWithFallback(font.info, "openTypeNameUniqueID"),
4: fullName,
5: getAttrWithFallback(font.info, "openTypeNameVersion"),
6: getAttrWithFallback(font.info, "postscriptFontName"),
7: getAttrWithFallback(font.info, "trademark"),
8: getAttrWithFallback(font.info, "openTypeNameManufacturer"),
9: getAttrWithFallback(font.info, "openTypeNameDesigner"),
10: getAttrWithFallback(font.info, "openTypeNameDescription"),
11: getAttrWithFallback(font.info, "openTypeNameManufacturerURL"),
12: getAttrWithFallback(font.info, "openTypeNameDesignerURL"),
13: getAttrWithFallback(font.info, "openTypeNameLicense"),
14: getAttrWithFallback(font.info, "openTypeNameLicenseURL"),
16: preferredFamilyName,
17: preferredSubfamilyName,
}
# don't add typographic names if they are the same as the legacy ones
if nameVals[1] == nameVals[16]:
del nameVals[16]
if nameVals[2] == nameVals[17]:
del nameVals[17]
# postscript font name
if nameVals[6]:
nameVals[6] = normalizeStringForPostscript(nameVals[6])
for nameId in sorted(nameVals.keys()):
nameVal = nameVals[nameId]
if not nameVal:
continue
nameVal = tounicode(nameVal, encoding='ascii')
platformId = 3
platEncId = 10 if _isNonBMP(nameVal) else 1
langId = 0x409
# Set built name record if not set yet
if name.getName(nameId, platformId, platEncId, langId):
continue
name.setName(nameVal, nameId, platformId, platEncId, langId)
def setupTable_maxp(self):
"""
Make the maxp table.
**This should not be called externally.** Subclasses
must override or supplement this method to handle the
table creation for either CFF or TT data.
"""
raise NotImplementedError
def setupTable_cmap(self):
"""
Make the cmap table.
**This should not be called externally.** Subclasses
may override or supplement this method to handle the
table creation in a different way if desired.
"""
from fontTools.ttLib.tables._c_m_a_p import cmap_format_4
nonBMP = dict((k,v) for k,v in self.unicodeToGlyphNameMapping.items() if k > 65535)
if nonBMP:
mapping = dict((k,v) for k,v in self.unicodeToGlyphNameMapping.items() if k <= 65535)
else:
mapping = dict(self.unicodeToGlyphNameMapping)
# mac
cmap4_0_3 = cmap_format_4(4)
cmap4_0_3.platformID = 0
cmap4_0_3.platEncID = 3
cmap4_0_3.language = 0
cmap4_0_3.cmap = mapping
# windows
cmap4_3_1 = cmap_format_4(4)
cmap4_3_1.platformID = 3
cmap4_3_1.platEncID = 1
cmap4_3_1.language = 0
cmap4_3_1.cmap = mapping
# store
self.otf["cmap"] = cmap = newTable("cmap")
cmap.tableVersion = 0
cmap.tables = [cmap4_0_3, cmap4_3_1]
# If we have glyphs outside Unicode BMP, we must set another
# subtable that can hold longer codepoints for them.
if nonBMP:
from fontTools.ttLib.tables._c_m_a_p import cmap_format_12
nonBMP.update(mapping)
# mac
cmap12_0_4 = cmap_format_12(12)
cmap12_0_4.platformID = 0
cmap12_0_4.platEncID = 4
cmap12_0_4.language = 0
cmap12_0_4.cmap = nonBMP
# windows
cmap12_3_10 = cmap_format_12(12)
cmap12_3_10.platformID = 3
cmap12_3_10.platEncID = 10
cmap12_3_10.language = 0
cmap12_3_10.cmap = nonBMP
# update tables registry
cmap.tables = [cmap4_0_3, cmap4_3_1, cmap12_0_4, cmap12_3_10]
def setupTable_OS2(self):
"""
Make the OS/2 table.
**This should not be called externally.** Subclasses
may override or supplement this method to handle the
table creation in a different way if desired.
"""
self.otf["OS/2"] = os2 = newTable("OS/2")
font = self.ufo
os2.version = 0x0004
# average glyph width
widths = [glyph.width for glyph in self.allGlyphs.values() if glyph.width > 0]
os2.xAvgCharWidth = round(sum(widths) / len(widths))
# weight and width classes
os2.usWeightClass = getAttrWithFallback(font.info, "openTypeOS2WeightClass")
os2.usWidthClass = getAttrWithFallback(font.info, "openTypeOS2WidthClass")
# embedding
os2.fsType = intListToNum(getAttrWithFallback(font.info, "openTypeOS2Type"), 0, 16)
# subscript, superscript, strikeout values, taken from AFDKO:
# FDK/Tools/Programs/makeotf/makeotf_lib/source/hotconv/hot.c
unitsPerEm = getAttrWithFallback(font.info, "unitsPerEm")
italicAngle = getAttrWithFallback(font.info, "italicAngle")
xHeight = getAttrWithFallback(font.info, "xHeight")
def adjustOffset(offset, angle):
"""Adjust Y offset based on italic angle, to get X offset."""
return offset * math.tan(math.radians(-angle)) if angle else 0
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptXSize")
if v is None:
v = unitsPerEm * 0.65
os2.ySubscriptXSize = round(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptYSize")
if v is None:
v = unitsPerEm * 0.6
os2.ySubscriptYSize = round(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptYOffset")
if v is None:
v = unitsPerEm * 0.075
os2.ySubscriptYOffset = round(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptXOffset")
if v is None:
v = adjustOffset(-os2.ySubscriptYOffset, italicAngle)
os2.ySubscriptXOffset = round(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptXSize")
if v is None:
v = os2.ySubscriptXSize
os2.ySuperscriptXSize = round(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptYSize")
if v is None:
v = os2.ySubscriptYSize
os2.ySuperscriptYSize = round(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptYOffset")
if v is None:
v = unitsPerEm * 0.35
os2.ySuperscriptYOffset = round(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptXOffset")
if v is None:
v = adjustOffset(os2.ySuperscriptYOffset, italicAngle)
os2.ySuperscriptXOffset = round(v)
v = getAttrWithFallback(font.info, "openTypeOS2StrikeoutSize")
if v is None:
v = getAttrWithFallback(font.info, "postscriptUnderlineThickness")
os2.yStrikeoutSize = round(v)
v = getAttrWithFallback(font.info, "openTypeOS2StrikeoutPosition")
if v is None:
v = xHeight * 0.6 if xHeight else unitsPerEm * 0.22
os2.yStrikeoutPosition = round(v)
# family class
ibmFontClass, ibmFontSubclass = getAttrWithFallback(
font.info, "openTypeOS2FamilyClass")
os2.sFamilyClass = (ibmFontClass << 8) + ibmFontSubclass
# panose
data = getAttrWithFallback(font.info, "openTypeOS2Panose")
panose = Panose()
panose.bFamilyType = data[0]
panose.bSerifStyle = data[1]
panose.bWeight = data[2]
panose.bProportion = data[3]
panose.bContrast = data[4]
panose.bStrokeVariation = data[5]
panose.bArmStyle = data[6]
panose.bLetterForm = data[7]
panose.bMidline = data[8]
panose.bXHeight = data[9]
os2.panose = panose
# Unicode ranges
uniRanges = getAttrWithFallback(font.info, "openTypeOS2UnicodeRanges")
os2.ulUnicodeRange1 = intListToNum(uniRanges, 0, 32)
os2.ulUnicodeRange2 = intListToNum(uniRanges, 32, 32)
os2.ulUnicodeRange3 = intListToNum(uniRanges, 64, 32)
os2.ulUnicodeRange4 = intListToNum(uniRanges, 96, 32)
# codepage ranges
codepageRanges = getAttrWithFallback(font.info, "openTypeOS2CodePageRanges")
os2.ulCodePageRange1 = intListToNum(codepageRanges, 0, 32)
os2.ulCodePageRange2 = intListToNum(codepageRanges, 32, 32)
# vendor id
os2.achVendID = tounicode(
getAttrWithFallback(font.info, "openTypeOS2VendorID"),
encoding="ascii", errors="ignore")
# vertical metrics
os2.sxHeight = round(getAttrWithFallback(font.info, "xHeight"))
os2.sCapHeight = round(getAttrWithFallback(font.info, "capHeight"))
os2.sTypoAscender = round(getAttrWithFallback(font.info, "openTypeOS2TypoAscender"))
os2.sTypoDescender = round(getAttrWithFallback(font.info, "openTypeOS2TypoDescender"))
os2.sTypoLineGap = round(getAttrWithFallback(font.info, "openTypeOS2TypoLineGap"))
os2.usWinAscent = round(getAttrWithFallback(font.info, "openTypeOS2WinAscent"))
os2.usWinDescent = round(getAttrWithFallback(font.info, "openTypeOS2WinDescent"))
# style mapping
selection = list(getAttrWithFallback(font.info, "openTypeOS2Selection"))
styleMapStyleName = getAttrWithFallback(font.info, "styleMapStyleName")
if styleMapStyleName == "regular":
selection.append(6)
elif styleMapStyleName == "bold":
selection.append(5)
elif styleMapStyleName == "italic":
selection.append(0)
elif styleMapStyleName == "bold italic":
selection += [0, 5]
os2.fsSelection = intListToNum(selection, 0, 16)
# characetr indexes
unicodes = [i for i in self.unicodeToGlyphNameMapping.keys() if i is not None]
if unicodes:
minIndex = min(unicodes)
maxIndex = max(unicodes)
else:
# the font may have *no* unicode values (it really happens!) so
# there needs to be a fallback. use 0xFFFF, as AFDKO does:
# FDK/Tools/Programs/makeotf/makeotf_lib/source/hotconv/map.c
minIndex = 0xFFFF
maxIndex = 0xFFFF
if maxIndex > 0xFFFF:
# the spec says that 0xFFFF should be used
# as the max if the max exceeds 0xFFFF
maxIndex = 0xFFFF
os2.fsFirstCharIndex = minIndex
os2.fsLastCharIndex = maxIndex
os2.usBreakChar = 32
os2.usDefaultChar = 0
# maximum contextual lookup length
os2.usMaxContex = 0
def setupTable_hmtx(self):
"""
Make the hmtx table.
**This should not be called externally.** Subclasses
may override or supplement this method to handle the
table creation in a different way if desired.
"""
self.otf["hmtx"] = hmtx = newTable("hmtx")
hmtx.metrics = {}
for glyphName, glyph in self.allGlyphs.items():
width = glyph.width
if width < 0:
raise ValueError(
"The width should not be negative: '%s'" % (glyphName))
bounds = self.glyphBoundingBoxes[glyphName]
left = bounds.xMin if bounds else 0
hmtx[glyphName] = (round(width), left)
def setupTable_hhea(self):
"""
Make the hhea table. This assumes that the hmtx table was made first.
**This should not be called externally.** Subclasses
may override or supplement this method to handle the
table creation in a different way if desired.
"""
self.otf["hhea"] = hhea = newTable("hhea")
hmtx = self.otf["hmtx"]
font = self.ufo
hhea.tableVersion = 0x00010000
# vertical metrics
hhea.ascent = round(getAttrWithFallback(font.info, "openTypeHheaAscender"))
hhea.descent = round(getAttrWithFallback(font.info, "openTypeHheaDescender"))
hhea.lineGap = round(getAttrWithFallback(font.info, "openTypeHheaLineGap"))
# horizontal metrics
widths = []
lefts = []
rights = []
extents = []
for glyphName in self.allGlyphs:
width, left = hmtx[glyphName]
widths.append(width)
bounds = self.glyphBoundingBoxes[glyphName]
if bounds is None:
continue
right = width - left - (bounds.xMax - bounds.xMin)
lefts.append(left)
rights.append(right)
# equation from the hhea spec for calculating xMaxExtent:
# Max(lsb + (xMax - xMin))
extent = left + (bounds.xMax - bounds.xMin)
extents.append(extent)
hhea.advanceWidthMax = max(widths)
hhea.minLeftSideBearing = min(lefts)
hhea.minRightSideBearing = min(rights)
hhea.xMaxExtent = max(extents)
# misc
hhea.caretSlopeRise = getAttrWithFallback(font.info, "openTypeHheaCaretSlopeRise")
hhea.caretSlopeRun = getAttrWithFallback(font.info, "openTypeHheaCaretSlopeRun")
hhea.caretOffset = round(getAttrWithFallback(font.info, "openTypeHheaCaretOffset"))
hhea.reserved0 = 0
hhea.reserved1 = 0
hhea.reserved2 = 0
hhea.reserved3 = 0
hhea.metricDataFormat = 0
# glyph count
hhea.numberOfHMetrics = len(self.allGlyphs)
def setupTable_vmtx(self):
"""
Make the vmtx table.
**This should not be called externally.** Subclasses
may override or supplement this method to handle the
table creation in a different way if desired.
"""
self.otf["vmtx"] = vmtx = newTable("vmtx")
vmtx.metrics = {}
for glyphName, glyph in self.allGlyphs.items():
height = glyph.height
verticalOrigin = _getVerticalOrigin(glyph)
bounds = self.glyphBoundingBoxes[glyphName]
top = bounds.yMax if bounds else 0
vmtx[glyphName] = (round(height), verticalOrigin - top)
def setupTable_VORG(self):
"""
Make the VORG table.
**This should not be called externally.** Subclasses
may override or supplement this method to handle the
table creation in a different way if desired.
"""
self.otf["VORG"] = vorg = newTable("VORG")
vorg.majorVersion = 1
vorg.minorVersion = 0
vorg.VOriginRecords = {}
# Find the most frequent verticalOrigin
vorg_count = Counter(_getVerticalOrigin(glyph)
for glyph in self.allGlyphs.values())
vorg.defaultVertOriginY = vorg_count.most_common(1)[0][0]
if len(vorg_count) > 1:
for glyphName, glyph in self.allGlyphs.items():
vorg.VOriginRecords[glyphName] = _getVerticalOrigin(glyph)
vorg.numVertOriginYMetrics = len(vorg.VOriginRecords)
def setupTable_vhea(self):
"""
Make the vhea table. This assumes that the head and vmtx tables were
made first.
**This should not be called externally.** Subclasses
may override or supplement this method to handle the
table creation in a different way if desired.
"""
self.otf["vhea"] = vhea = newTable("vhea")
font = self.ufo
head = self.otf["head"]
vmtx = self.otf["vmtx"]
vhea.tableVersion = 0x00011000
# horizontal metrics
vhea.ascent = round(getAttrWithFallback(font.info, "openTypeVheaVertTypoAscender"))
vhea.descent = round(getAttrWithFallback(font.info, "openTypeVheaVertTypoDescender"))
vhea.lineGap = round(getAttrWithFallback(font.info, "openTypeVheaVertTypoLineGap"))
# vertical metrics
heights = []
tops = []
bottoms = []
for glyphName in self.allGlyphs:
height, top = vmtx[glyphName]
heights.append(height)
bounds = self.glyphBoundingBoxes[glyphName]
if bounds is None:
continue
bottom = height - top - (bounds.yMax - bounds.yMin)
tops.append(top)
bottoms.append(bottom)
vhea.advanceHeightMax = max(heights)
vhea.minTopSideBearing = max(tops)
vhea.minBottomSideBearing = max(bottoms)
vhea.yMaxExtent = vhea.minTopSideBearing - (head.yMax - head.yMin)
# misc
vhea.caretSlopeRise = getAttrWithFallback(font.info, "openTypeVheaCaretSlopeRise")
vhea.caretSlopeRun = getAttrWithFallback(font.info, "openTypeVheaCaretSlopeRun")
vhea.caretOffset = getAttrWithFallback(font.info, "openTypeVheaCaretOffset")
vhea.reserved0 = 0
vhea.reserved1 = 0
vhea.reserved2 = 0
vhea.reserved3 = 0
vhea.reserved4 = 0
vhea.metricDataFormat = 0
# glyph count
vhea.numberOfVMetrics = len(self.allGlyphs)
def setupTable_post(self):
"""
Make the post table.
**This should not be called externally.** Subclasses
may override or supplement this method to handle the
table creation in a different way if desired.
"""
self.otf["post"] = post = newTable("post")
font = self.ufo
post.formatType = 3.0
# italic angle
italicAngle = getAttrWithFallback(font.info, "italicAngle")
post.italicAngle = italicAngle
# underline
underlinePosition = getAttrWithFallback(font.info, "postscriptUnderlinePosition")
post.underlinePosition = round(underlinePosition)
underlineThickness = getAttrWithFallback(font.info, "postscriptUnderlineThickness")
post.underlineThickness = round(underlineThickness)
# determine if the font has a fixed width
widths = set([glyph.width for glyph in self.allGlyphs.values()])
post.isFixedPitch = getAttrWithFallback(font.info, "postscriptIsFixedPitch")
# misc
post.minMemType42 = 0
post.maxMemType42 = 0
post.minMemType1 = 0
post.maxMemType1 = 0
def setupOtherTables(self):
"""
Make the other tables. The default implementation does nothing.
**This should not be called externally.** Subclasses
may override this method to add other tables to the
font if desired.
"""
pass
def importTTX(self):
"""
Merge TTX files from data directory "com.github.fonttools.ttx"
**This should not be called externally.** Subclasses
may override this method to handle the bounds creation
in a different way if desired.
"""
import os
import re
prefix = "com.github.fonttools.ttx"
sfntVersionRE = re.compile('(^<ttFont\s+)(sfntVersion=".*"\s+)(.*>$)',
flags=re.MULTILINE)
if not hasattr(self.ufo, "data"):
return
if not self.ufo.data.fileNames:
return
for path in self.ufo.data.fileNames:
foldername, filename = os.path.split(path)
if (foldername == prefix and filename.endswith(".ttx")):
ttx = self.ufo.data[path].decode('utf-8')
# strip 'sfntVersion' attribute from ttFont element,
# if present, to avoid overwriting the current value
ttx = sfntVersionRE.sub(r'\1\3', ttx)
fp = BytesIO(ttx.encode('utf-8'))
self.otf.importXML(fp)
class OutlineOTFCompiler(BaseOutlineCompiler):
"""Compile a .otf font with CFF outlines."""
sfntVersion = "OTTO"
def __init__(self, font, glyphSet=None, glyphOrder=None,
roundTolerance=None):
if roundTolerance is not None:
self.roundTolerance = float(roundTolerance)
else:
# round all coordinates to integers by default
self.roundTolerance = 0.5
super(OutlineOTFCompiler, self).__init__(
font, glyphSet=glyphSet, glyphOrder=glyphOrder)
def makeGlyphsBoundingBoxes(self):
"""
Make bounding boxes for all the glyphs, and return a dictionary of
BoundingBox(xMin, xMax, yMin, yMax) namedtuples keyed by glyph names.
The bounding box of empty glyphs (without contours or components) is
set to None.
Check that the float values are within the range of the specified
self.roundTolerance, and if so use the rounded value; else take the
floor or ceiling to ensure that the bounding box encloses the original
values.
"""
def getControlPointBounds(glyph):
pen.init()
glyph.draw(pen)
return pen.bounds
def toInt(value, else_callback):
rounded = round(value)
if tolerance >= 0.5 or abs(rounded - value) <= tolerance:
return rounded
else:
return int(else_callback(value))
tolerance = self.roundTolerance
glyphBoxes = {}
pen = ControlBoundsPen(self.allGlyphs)
for glyphName, glyph in self.allGlyphs.items():
bounds = None
if glyph or glyph.components:
bounds = getControlPointBounds(glyph)
if bounds:
rounded = []
for value in bounds[:2]:
rounded.append(toInt(value, math.floor))
for value in bounds[2:]:
rounded.append(toInt(value, math.ceil))
bounds = BoundingBox(*rounded)
glyphBoxes[glyphName] = bounds
return glyphBoxes
def getCharStringForGlyph(self, glyph, private, globalSubrs):
"""
Get a Type2CharString for the *glyph*
**This should not be called externally.** Subclasses
may override this method to handle the charstring creation
in a different way if desired.
"""
width = glyph.width
# subtract the nominal width
postscriptNominalWidthX = getAttrWithFallback(self.ufo.info, "postscriptNominalWidthX")
if postscriptNominalWidthX:
width = width - postscriptNominalWidthX
# round
width = round(width)
pen = T2CharStringPen(width, self.allGlyphs,
roundTolerance=self.roundTolerance)
glyph.draw(pen)
charString = pen.getCharString(private, globalSubrs)
return charString
def setupTable_maxp(self):
"""Make the maxp table."""
self.otf["maxp"] = maxp = newTable("maxp")
maxp.tableVersion = 0x00005000
def setupOtherTables(self):
self.setupTable_CFF()
if self.vertical:
self.setupTable_VORG()
def setupTable_CFF(self):
"""Make the CFF table."""
self.otf["CFF "] = cff = newTable("CFF ")
cff = cff.cff
# set up the basics
cff.major = 1
cff.minor = 0
cff.hdrSize = 4
cff.offSize = 4
cff.fontNames = []
strings = IndexedStrings()
cff.strings = strings
private = PrivateDict(strings=strings)
private.rawDict.update(private.defaults)
globalSubrs = GlobalSubrsIndex(private=private)
topDict = TopDict(GlobalSubrs=globalSubrs, strings=strings)
topDict.Private = private
charStrings = topDict.CharStrings = CharStrings(file=None, charset=None,
globalSubrs=globalSubrs, private=private, fdSelect=None, fdArray=None)
charStrings.charStringsAreIndexed = True
topDict.charset = []
charStringsIndex = charStrings.charStringsIndex = SubrsIndex(private=private, globalSubrs=globalSubrs)
cff.topDictIndex = topDictIndex = TopDictIndex()
topDictIndex.append(topDict)
topDictIndex.strings = strings
cff.GlobalSubrs = globalSubrs
# populate naming data
info = self.ufo.info
psName = getAttrWithFallback(info, "postscriptFontName")
cff.fontNames.append(psName)
topDict = cff.topDictIndex[0]
topDict.version = "%d.%d" % (getAttrWithFallback(info, "versionMajor"), getAttrWithFallback(info, "versionMinor"))
trademark = getAttrWithFallback(info, "trademark")
if trademark:
trademark = normalizeStringForPostscript(trademark.replace("\u00A9", "Copyright"))
if trademark != self.ufo.info.trademark:
logger.warning("The trademark was normalized for storage in the "
"CFF table and consequently some characters were "
"dropped: '%s'", trademark)
if trademark is None:
trademark = ""
topDict.Notice = trademark
copyright = getAttrWithFallback(info, "copyright")
if copyright:
copyright = normalizeStringForPostscript(copyright.replace("\u00A9", "Copyright"))
if copyright != self.ufo.info.copyright:
logger.warning("The copyright was normalized for storage in the "
"CFF table and consequently some characters were "
"dropped: '%s'", copyright)
if copyright is None:
copyright = ""
topDict.Copyright = copyright
topDict.FullName = getAttrWithFallback(info, "postscriptFullName")
topDict.FamilyName = getAttrWithFallback(info, "openTypeNamePreferredFamilyName")
topDict.Weight = getAttrWithFallback(info, "postscriptWeightName")
topDict.FontName = psName
# populate various numbers
topDict.isFixedPitch = getAttrWithFallback(info, "postscriptIsFixedPitch")
topDict.ItalicAngle = getAttrWithFallback(info, "italicAngle")
underlinePosition = getAttrWithFallback(info, "postscriptUnderlinePosition")
topDict.UnderlinePosition = round(underlinePosition)
underlineThickness = getAttrWithFallback(info, "postscriptUnderlineThickness")
topDict.UnderlineThickness = round(underlineThickness)
# populate font matrix
unitsPerEm = round(getAttrWithFallback(info, "unitsPerEm"))
topDict.FontMatrix = [1.0 / unitsPerEm, 0, 0, 1.0 / unitsPerEm, 0, 0]
# populate the width values
defaultWidthX = round(getAttrWithFallback(info, "postscriptDefaultWidthX"))
if defaultWidthX:
private.rawDict["defaultWidthX"] = defaultWidthX
nominalWidthX = round(getAttrWithFallback(info, "postscriptNominalWidthX"))
if nominalWidthX:
private.rawDict["nominalWidthX"] = nominalWidthX
# populate hint data
blueFuzz = round(getAttrWithFallback(info, "postscriptBlueFuzz"))
blueShift = round(getAttrWithFallback(info, "postscriptBlueShift"))
blueScale = getAttrWithFallback(info, "postscriptBlueScale")
forceBold = getAttrWithFallback(info, "postscriptForceBold")
blueValues = getAttrWithFallback(info, "postscriptBlueValues")
if isinstance(blueValues, list):
blueValues = [round(i) for i in blueValues]
otherBlues = getAttrWithFallback(info, "postscriptOtherBlues")
if isinstance(otherBlues, list):
otherBlues = [round(i) for i in otherBlues]
familyBlues = getAttrWithFallback(info, "postscriptFamilyBlues")
if isinstance(familyBlues, list):
familyBlues = [round(i) for i in familyBlues]
familyOtherBlues = getAttrWithFallback(info, "postscriptFamilyOtherBlues")
if isinstance(familyOtherBlues, list):
familyOtherBlues = [round(i) for i in familyOtherBlues]
stemSnapH = getAttrWithFallback(info, "postscriptStemSnapH")
if isinstance(stemSnapH, list):
stemSnapH = [round(i) for i in stemSnapH]
stemSnapV = getAttrWithFallback(info, "postscriptStemSnapV")
if isinstance(stemSnapV, list):
stemSnapV = [round(i) for i in stemSnapV]
# only write the blues data if some blues are defined.
if any((blueValues, otherBlues, familyBlues, familyOtherBlues)):
private.rawDict["BlueFuzz"] = blueFuzz
private.rawDict["BlueShift"] = blueShift
private.rawDict["BlueScale"] = blueScale
private.rawDict["ForceBold"] = forceBold
if blueValues:
private.rawDict["BlueValues"] = blueValues
if otherBlues:
private.rawDict["OtherBlues"] = otherBlues
if familyBlues:
private.rawDict["FamilyBlues"] = familyBlues
if familyOtherBlues:
private.rawDict["FamilyOtherBlues"] = familyOtherBlues
# only write the stems if both are defined.
if (stemSnapH and stemSnapV):
private.rawDict["StemSnapH"] = stemSnapH
private.rawDict["StdHW"] = stemSnapH[0]
private.rawDict["StemSnapV"] = stemSnapV
private.rawDict["StdVW"] = stemSnapV[0]
# populate glyphs
for glyphName in self.glyphOrder:
glyph = self.allGlyphs[glyphName]
charString = self.getCharStringForGlyph(glyph, private, globalSubrs)
# add to the font
if glyphName in charStrings:
# XXX a glyph already has this name. should we choke?
glyphID = charStrings.charStrings[glyphName]
charStringsIndex.items[glyphID] = charString
else:
charStringsIndex.append(charString)
glyphID = len(topDict.charset)
charStrings.charStrings[glyphName] = glyphID
topDict.charset.append(glyphName)
topDict.FontBBox = self.fontBoundingBox
# write the glyph order
self.otf.setGlyphOrder(self.glyphOrder)
class OutlineTTFCompiler(BaseOutlineCompiler):
"""Compile a .ttf font with TrueType outlines.
"""
sfntVersion = "\000\001\000\000"
def setupTable_maxp(self):
"""Make the maxp table."""
self.otf["maxp"] = maxp = newTable("maxp")
maxp.tableVersion = 0x00010000
maxp.maxZones = 1
maxp.maxTwilightPoints = 0
maxp.maxStorage = 0
maxp.maxFunctionDefs = 0
maxp.maxInstructionDefs = 0
maxp.maxStackElements = 0
maxp.maxSizeOfInstructions = 0
maxp.maxComponentElements = max(len(g.components)
for g in self.allGlyphs.values())
def setupTable_post(self):
"""Make a format 2 post table with the compiler's glyph order."""
super(OutlineTTFCompiler, self).setupTable_post()
post = self.otf["post"]
post.formatType = 2.0
post.extraNames = []
post.mapping = {}
post.glyphOrder = self.glyphOrder
def setupOtherTables(self):
self.setupTable_glyf()
if self.ufo.info.openTypeGaspRangeRecords:
self.setupTable_gasp()
def setupTable_glyf(self):
"""Make the glyf table."""
self.otf["loca"] = newTable("loca")
self.otf["glyf"] = glyf = newTable("glyf")
glyf.glyphs = {}
glyf.glyphOrder = self.glyphOrder
allGlyphs = self.allGlyphs
for name in self.glyphOrder:
glyph = allGlyphs[name]
pen = TTGlyphPen(allGlyphs)
try:
glyph.draw(pen)
except NotImplementedError:
logger.error("%r has invalid curve format; skipped", name)
ttGlyph = Glyph()
else:
ttGlyph = pen.glyph()
if ttGlyph.isComposite() and self.autoUseMyMetrics:
self.autoUseMyMetrics(ttGlyph, glyph.width, allGlyphs)
glyf[name] = ttGlyph
@staticmethod
def autoUseMyMetrics(ttGlyph, width, glyphSet):
""" Set the "USE_MY_METRICS" flag on the first component having the
same advance width as the composite glyph, no transform and no
horizontal shift (but allow it to shift vertically).
This forces the composite glyph to use the possibly hinted horizontal
metrics of the sub-glyph, instead of those from the "hmtx" table.
"""
for component in ttGlyph.components:
try:
baseName, transform = component.getComponentInfo()
except AttributeError:
# component uses '{first,second}Pt' instead of 'x' and 'y'
continue
if (glyphSet[baseName].width == width and
transform[:-1] == (1, 0, 0, 1, 0)):
component.flags |= USE_MY_METRICS
break
class StubGlyph(object):
"""
This object will be used to create missing glyphs
(specifically .notdef) in the provided UFO.
"""
def __init__(self, name, width, unitsPerEm, ascender, descender, unicodes=[]):
self.name = name
self.width = width
self.unitsPerEm = unitsPerEm
self.ascender = ascender
self.descender = descender
self.unicodes = unicodes
self.components = []
if unicodes:
self.unicode = unicodes[0]
else:
self.unicode = None
if name == ".notdef":
self.draw = self._drawDefaultNotdef
def __len__(self):
if self.name == ".notdef":
return 1
return 0
def _get_leftMargin(self):
if self.bounds is None:
return 0
return self.bounds[0]
leftMargin = property(_get_leftMargin)
def _get_rightMargin(self):
bounds = self.bounds
if bounds is None:
return 0
xMin, yMin, xMax, yMax = bounds
return self.width - bounds[2]
rightMargin = property(_get_rightMargin)
def draw(self, pen):
pass
def _drawDefaultNotdef(self, pen):
width = round(self.unitsPerEm * 0.5)
stroke = round(self.unitsPerEm * 0.05)
ascender = self.ascender
descender = self.descender
xMin = stroke
xMax = width - stroke
yMax = ascender
yMin = descender
pen.moveTo((xMin, yMin))
pen.lineTo((xMax, yMin))
pen.lineTo((xMax, yMax))
pen.lineTo((xMin, yMax))
pen.lineTo((xMin, yMin))
pen.closePath()
xMin += stroke
xMax -= stroke
yMax -= stroke
yMin += stroke
pen.moveTo((xMin, yMin))
pen.lineTo((xMin, yMax))
pen.lineTo((xMax, yMax))
pen.lineTo((xMax, yMin))
pen.lineTo((xMin, yMin))
pen.closePath()
def _get_controlPointBounds(self):
pen = ControlBoundsPen(None)
self.draw(pen)
return pen.bounds
controlPointBounds = property(_get_controlPointBounds)
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