def test_max_ctx_calc_features_ttx(file_name, max_context):
ttx_path = os.path.join(os.path.dirname(__file__),
'data', '{}.ttx'.format(file_name))
font = TTFont()
font.importXML(ttx_path)
assert maxCtxFont(font) == max_context
def main():
font = TTFont(sys.argv[1])
name = font["name"]
head = font["head"]
OS_2 = font["OS/2"]
family = name.getName(1, 3, 1)
if str(family).endswith(" Italic"):
family.string = str(family).replace(" Italic", "")
name.setName("Italic", 2, family.platformID, family.platEncID,
family.langID)
# Set italic bits
head.macStyle |= 1 << 1
OS_2.fsSelection |= 1 << 0
# Clear regular bit
OS_2.fsSelection &= ~(1 << 6)
# Force ppem to integer values, since the fonts are hinted.
head.flags |= 1 << 3
OS_2.usMaxContext = maxCtxFont(font)
font["DSIG"] = DSIG = newTable("DSIG")
DSIG.ulVersion = 1
DSIG.usFlag = 0
DSIG.usNumSigs = 0
DSIG.signatureRecords = []
font.save(sys.argv[1])
def test_max_ctx_calc_features_ttx(file_name, max_context):
ttx_path = os.path.join(os.path.dirname(__file__), 'data',
'{}.ttx'.format(file_name))
font = TTFont()
font.importXML(ttx_path)
assert maxCtxFont(font) == max_context
def main():
font = TTFont(sys.argv[1])
# Drop VOLT table
if "TSIV" in font:
del font["TSIV"]
# Add STAT table
os2 = font["OS/2"]
italic = bool(os2.fsSelection & (1 << 0))
fvar = font["fvar"]
axes = [dict(tag=a.axisTag, name=a.axisNameID) for a in fvar.axes]
if italic:
value = dict(value=italic, name="Italic")
else:
value = dict(value=italic, name="Roman", flags=0x0002, linkedValue=1)
axes.append(dict(tag="ital", name="Italic", values=[value]))
buildStatTable(font, axes)
# Prune name table
names = [n for n in font["name"].names if n.platformID == 3]
# Drop Regular from Roman font names
if not italic:
for name in names:
if name.nameID in (3, 6):
name.string = str(name).replace("-Regular", "")
if name.nameID == 4:
name.string = str(name).replace(" Regular", "")
font["name"].names = names
font["OS/2"].usMaxContext = maxCtxFont(font)
font["DSIG"] = DSIG = newTable("DSIG")
DSIG.ulVersion = 1
DSIG.usFlag = 0
DSIG.usNumSigs = 0
DSIG.signatureRecords = []
if "glyf" in font and "prep" not in font:
# Google Fonts “smart dropout control”
font["prep"] = prep = newTable("prep")
prep.program = ttProgram.Program()
prep.program.fromAssembly(
["PUSHW[]", "511", "SCANCTRL[]", "PUSHB[]", "4", "SCANTYPE[]"]
)
if "MVAR" in font:
del font["MVAR"]
font.save(sys.argv[1])
def _postprocess(self, otf, otl, fmt):
if otl is not None:
otl.setGlyphOrder(otf.getGlyphOrder())
for tag in self.ttf.get("tables", []):
logger.info(f"Copying {tag} table to {self.name}.{fmt.value}")
otf[tag] = deepcopy(otl[tag])
otf["OS/2"].usMaxContext = maxCtxFont(otf)
if self.names:
logger.info(f"Adding name entries to {self.name}.{fmt.value}")
self._setnames(otf, self.names)
return otf
def test_max_ctx_calc_features():
glyphs = '.notdef space A B C a b c'.split()
features = """
lookup GSUB_EXT useExtension {
sub a by b;
} GSUB_EXT;
lookup GPOS_EXT useExtension {
pos a b -10;
} GPOS_EXT;
feature sub1 {
sub A by a;
sub A B by b;
sub A B C by c;
sub [A B] C by c;
sub [A B] C [A B] by c;
sub A by A B;
sub A' C by A B;
sub a' by b;
sub a' b by c;
sub a from [A B C];
rsub a by b;
rsub a' by b;
rsub a b' by c;
rsub a b' c by A;
rsub [a b] c' by A;
rsub [a b] c' [a b] by B;
lookup GSUB_EXT;
} sub1;
feature pos1 {
pos A 20;
pos A B -50;
pos A B' 10 C;
lookup GPOS_EXT;
} pos1;
"""
font = TTFont()
font.setGlyphOrder(glyphs)
addOpenTypeFeaturesFromString(font, features)
assert maxCtxFont(font) == 3
def test_max_ctx_calc_features():
glyphs = '.notdef space A B C a b c'.split()
features = """
lookup GSUB_EXT useExtension {
sub a by b;
} GSUB_EXT;
lookup GPOS_EXT useExtension {
pos a b -10;
} GPOS_EXT;
feature sub1 {
sub A by a;
sub A B by b;
sub A B C by c;
sub [A B] C by c;
sub [A B] C [A B] by c;
sub A by A B;
sub A' C by A B;
sub a' by b;
sub a' b by c;
sub a from [A B C];
rsub a by b;
rsub a' by b;
rsub a b' by c;
rsub a b' c by A;
rsub [a b] c' by A;
rsub [a b] c' [a b] by B;
lookup GSUB_EXT;
} sub1;
feature pos1 {
pos A 20;
pos A B -50;
pos A B' 10 C;
lookup GPOS_EXT;
} pos1;
"""
font = TTFont()
font.setGlyphOrder(glyphs)
addOpenTypeFeaturesFromString(font, features)
assert maxCtxFont(font) == 3
def _postprocess(self, otf, otl, fmt):
if otl is not None:
otl.setGlyphOrder(otf.getGlyphOrder())
for tag in self.ttf.get("tables", []):
logger.info(f"Copying {tag} table to {self.name}.{fmt.value}")
otf[tag] = deepcopy(otl[tag])
otf["OS/2"].usMaxContext = maxCtxFont(otf)
if self.names:
logger.info(f"Adding name entries to {self.name}.{fmt.value}")
self._setnames(otf, self.names)
if self.DSIG:
otf["DSIG"] = DSIG = newTable("DSIG")
DSIG.ulVersion = 1
DSIG.usFlag = 0
DSIG.usNumSigs = 0
DSIG.signatureRecords = []
return otf
def test_max_ctx_calc_no_features():
font = TTFont()
assert maxCtxFont(font) == 0
font.setGlyphOrder(['.notdef'])
addOpenTypeFeaturesFromString(font, '')
assert maxCtxFont(font) == 0
def test_max_ctx_calc_no_features():
font = TTFont()
assert maxCtxFont(font) == 0
font.setGlyphOrder(['.notdef'])
addOpenTypeFeaturesFromString(font, '')
assert maxCtxFont(font) == 0