def makeTable_OS2(ttf, pixelSize, descentPixels, minUnicode, maxUnicode):
size = 8 * pixelSize
descent = pixelSize * descentPixels
os_2 = newTable("OS/2")
os_2.version = 4
os_2.xAvgCharWidth = size
os_2.usWeightClass = 400 # Meaning "Normal (Regular)"
os_2.usWidthClass = 5 # Meaing "Medium (normal)"
os_2.fsType = 0 # Windows-only licensing bits...
os_2.ySubscriptXSize = size
os_2.ySubscriptYSize = size / 2
os_2.ySubscriptXOffset = 0
os_2.ySubscriptYOffset = descent
os_2.ySuperscriptXSize = size / 2
os_2.ySuperscriptYSize = size / 2
os_2.ySuperscriptXOffset = 0
os_2.ySuperscriptYOffset = size / 2
os_2.yStrikeoutSize = pixelSize
os_2.yStrikeoutPosition = size / 2 - descent
os_2.sFamilyClass = 0x080a # Class ID = 8 (Sans Serif), Subclass ID = 10 (Matrix)
panose = Panose()
panose.bFamilyType = 2 # Text and Display
panose.bSerifStyle = 1 # No Fit
panose.bWeight = 6 # Medium
panose.bProportion = 9 # Monospaced
panose.bContrast = 6 # Medium
panose.bStrokeVariation = 2 # Gradual/Diagonal
panose.bArmStyle = 2 # Straight Arms/Horizontal
panose.bLetterForm = 8 # Normal/Square
panose.bMidline = 1 # No Fit
panose.bXHeight = 1 # No Fit
os_2.panose = panose
os_2.ulUnicodeRange1 = 0b10000000000000000000000010000011 # Basic Latin + Latin-1 supplement + Greek and Coptic + General punctuation
os_2.ulUnicodeRange2 = 0b00010000000000001111100001100000 # Arrows + Mathematical operators + Box drawing + Block elements + Geometric shapes + Misc. symbols + Dingbats + Private use area
os_2.ulUnicodeRange3 = 0b00000000000000000000000000000000 # n/a
os_2.ulUnicodeRange4 = 0b00000000000000000000000000000000 # n/a
os_2.achVendID = "C=64" # :-)
os_2.fsSelection = 64 # Regular
os_2.fsFirstCharIndex = minUnicode
os_2.fsLastCharIndex = maxUnicode
os_2.sTypoAscender = size - descent
os_2.sTypoDescender = 0 - descent
os_2.sTypoLineGap = 0
os_2.usWinAscent = size - descent
os_2.usWinDescent = descent
os_2.ulCodePageRange1 = 0b00000000000000000000000000000001 # Latin 1 (Code page 1252)
os_2.ulCodePageRange2 = 0b11000000000000000000000000000000 # WE/Latin 1 (Code page 850) + US (Code page 437)
os_2.sxHeight = 6 * pixelSize - descent # Guess (we don't always have a lower-case "x" at 0x78 to measure (as the standard suggests))
os_2.sCapHeight = size - descent
os_2.usDefaultChar = 0
os_2.usBreakChar = 32
os_2.usMaxContex = 0
ttf["OS/2"] = os_2
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 = _roundInt(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 = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptYSize")
if v is None:
v = unitsPerEm * 0.6
os2.ySubscriptYSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptYOffset")
if v is None:
v = unitsPerEm * 0.075
os2.ySubscriptYOffset = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptXOffset")
if v is None:
v = adjustOffset(-os2.ySubscriptYOffset, italicAngle)
os2.ySubscriptXOffset = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptXSize")
if v is None:
v = os2.ySubscriptXSize
os2.ySuperscriptXSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptYSize")
if v is None:
v = os2.ySubscriptYSize
os2.ySuperscriptYSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptYOffset")
if v is None:
v = unitsPerEm * 0.35
os2.ySuperscriptYOffset = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptXOffset")
if v is None:
v = adjustOffset(os2.ySuperscriptYOffset, italicAngle)
os2.ySuperscriptXOffset = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2StrikeoutSize")
if v is None:
v = getAttrWithFallback(font.info, "postscriptUnderlineThickness")
os2.yStrikeoutSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2StrikeoutPosition")
if v is None:
v = xHeight * 0.6 if xHeight else unitsPerEm * 0.22
os2.yStrikeoutPosition = _roundInt(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 = _roundInt(getAttrWithFallback(font.info, "xHeight"))
os2.sCapHeight = _roundInt(getAttrWithFallback(font.info, "capHeight"))
os2.sTypoAscender = _roundInt(
getAttrWithFallback(font.info, "openTypeOS2TypoAscender"))
os2.sTypoDescender = _roundInt(
getAttrWithFallback(font.info, "openTypeOS2TypoDescender"))
os2.sTypoLineGap = _roundInt(
getAttrWithFallback(font.info, "openTypeOS2TypoLineGap"))
os2.usWinAscent = _roundInt(
getAttrWithFallback(font.info, "openTypeOS2WinAscent"))
os2.usWinDescent = _roundInt(
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_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 = _roundInt(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
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptXSize")
if v is None:
v = 0
os2.ySubscriptXSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptYSize")
if v is None:
v = 0
os2.ySubscriptYSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptXOffset")
if v is None:
v = 0
os2.ySubscriptXOffset = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptYOffset")
if v is None:
v = 0
os2.ySubscriptYOffset = _roundInt(v)
# superscript
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptXSize")
if v is None:
v = 0
os2.ySuperscriptXSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptYSize")
if v is None:
v = 0
os2.ySuperscriptYSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptXOffset")
if v is None:
v = 0
os2.ySuperscriptXOffset = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptYOffset")
if v is None:
v = 0
os2.ySuperscriptYOffset = _roundInt(v)
# strikeout
v = getAttrWithFallback(font.info, "openTypeOS2StrikeoutSize")
if v is None:
v = 0
os2.yStrikeoutSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2StrikeoutPosition")
if v is None:
v = 0
os2.yStrikeoutPosition = _roundInt(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 = _roundInt(getAttrWithFallback(font.info, "xHeight"))
os2.sCapHeight = _roundInt(getAttrWithFallback(font.info, "capHeight"))
os2.sTypoAscender = _roundInt(getAttrWithFallback(font.info, "openTypeOS2TypoAscender"))
os2.sTypoDescender = _roundInt(getAttrWithFallback(font.info, "openTypeOS2TypoDescender"))
os2.sTypoLineGap = _roundInt(getAttrWithFallback(font.info, "openTypeOS2TypoLineGap"))
os2.usWinAscent = _roundInt(getAttrWithFallback(font.info, "openTypeOS2WinAscent"))
os2.usWinDescent = _roundInt(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 space for this.
minIndex = 0x0020
maxIndex = 0x0020
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_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 = _roundInt(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
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptXSize")
if v is None:
v = 0
os2.ySubscriptXSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptYSize")
if v is None:
v = 0
os2.ySubscriptYSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptXOffset")
if v is None:
v = 0
os2.ySubscriptXOffset = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SubscriptYOffset")
if v is None:
v = 0
os2.ySubscriptYOffset = _roundInt(v)
# superscript
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptXSize")
if v is None:
v = 0
os2.ySuperscriptXSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptYSize")
if v is None:
v = 0
os2.ySuperscriptYSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptXOffset")
if v is None:
v = 0
os2.ySuperscriptXOffset = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2SuperscriptYOffset")
if v is None:
v = 0
os2.ySuperscriptYOffset = _roundInt(v)
# strikeout
v = getAttrWithFallback(font.info, "openTypeOS2StrikeoutSize")
if v is None:
v = 0
os2.yStrikeoutSize = _roundInt(v)
v = getAttrWithFallback(font.info, "openTypeOS2StrikeoutPosition")
if v is None:
v = 0
os2.yStrikeoutPosition = _roundInt(v)
# family class
os2.sFamilyClass = 0 # XXX not sure how to create the appropriate value
# 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 = str(
getAttrWithFallback(font.info, "openTypeOS2VendorID").decode(
"ascii", "ignore"))
# vertical metrics
os2.sxHeight = _roundInt(getAttrWithFallback(font.info, "xHeight"))
os2.sCapHeight = _roundInt(getAttrWithFallback(font.info, "capHeight"))
os2.sTypoAscender = _roundInt(
getAttrWithFallback(font.info, "openTypeOS2TypoAscender"))
os2.sTypoDescender = _roundInt(
getAttrWithFallback(font.info, "openTypeOS2TypoDescender"))
os2.sTypoLineGap = _roundInt(
getAttrWithFallback(font.info, "openTypeOS2TypoLineGap"))
os2.usWinAscent = _roundInt(
getAttrWithFallback(font.info, "openTypeOS2WinAscent"))
os2.usWinDescent = _roundInt(
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 space for this.
minIndex = 0x0020
maxIndex = 0x0020
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