def test_decompileCoord_roundTrip(self):
# Make sure we are not affected by https://github.com/behdad/fonttools/issues/286
data = deHexStr("7F B9 80 35")
values, _ = TupleVariation.decompileCoord_(["wght", "wdth"], data, 0)
axisValues = {axis:(val, val, val) for axis, val in values.items()}
var = TupleVariation(axisValues, [None] * 4)
self.assertEqual("7F B9 80 35", hexencode(var.compileCoord(["wght", "wdth"])))
def test_fromXML_badDeltaFormat(self):
g = TupleVariation({}, [])
with CapturingLogHandler(log, "WARNING") as captor:
for name, attrs, content in parseXML('<delta a="1" b="2"/>'):
g.fromXML(name, attrs, content)
self.assertIn("bad delta format: a, b",
[r.msg for r in captor.records])
def test_decompilePoints_roundTrip(self): numPointsInGlyph = 500 # greater than 255, so we also exercise code path for 16-bit encoding compile = lambda points: TupleVariation.compilePoints(points, numPointsInGlyph) decompile = lambda data: set(TupleVariation.decompilePoints_(numPointsInGlyph, data, 0, "gvar")[0]) for i in range(50): points = set(random.sample(range(numPointsInGlyph), 30)) self.assertSetEqual(points, decompile(compile(points)), "failed round-trip decompile/compilePoints; points=%s" % points) allPoints = set(range(numPointsInGlyph)) self.assertSetEqual(allPoints, decompile(compile(allPoints)))
def test_toXML_allDeltasNone(self):
writer = XMLWriter(BytesIO())
axes = {"wght":(0.0, 1.0, 1.0)}
g = TupleVariation(axes, [None] * 5)
g.toXML(writer, ["wght", "wdth"])
self.assertEqual([
'<tuple>',
'<coord axis="wght" value="1.0"/>',
'<!-- no deltas -->',
'</tuple>'
], TupleVariationTest.xml_lines(writer))
def test_fromXML_constants(self):
g = TupleVariation({}, [None] * 4)
for name, attrs, content in parseXML(
'<coord axis="wdth" min="0.3" value="0.4" max="0.5"/>'
'<coord axis="wght" value="1.0"/>'
'<coord axis="opsz" value="-0.7"/>'
'<delta cvt="1" value="42"/>'
'<delta cvt="2" value="-23"/>'):
g.fromXML(name, attrs, content)
self.assertEqual(AXES, g.axes)
self.assertEqual([None, 42, -23, None], g.coordinates)
def test_fromXML_points(self):
g = TupleVariation({}, [None] * 4)
for name, attrs, content in parseXML(
'<coord axis="wdth" min="0.3" value="0.4" max="0.5"/>'
'<coord axis="wght" value="1.0"/>'
'<coord axis="opsz" value="-0.7"/>'
'<delta pt="1" x="33" y="44"/>'
'<delta pt="2" x="-2" y="170"/>'):
g.fromXML(name, attrs, content)
self.assertEqual(AXES, g.axes)
self.assertEqual([None, (33, 44), (-2, 170), None], g.coordinates)
def test_compile_embeddedPeak_nonIntermediate_sharedConstants(self):
var = TupleVariation(
{"wght": (0.0, 0.5, 0.5), "wdth": (0.0, 0.8, 0.8)},
[3, 1, 4])
tup, deltas = var.compile(axisTags=["wght", "wdth"],
sharedCoordIndices={}, sharedPoints={0, 1, 2})
# len(deltas)=4; flags=EMBEDDED_PEAK_TUPLE
# embeddedPeak=[(0.5, 0.8)]; intermediateCoord=[]
self.assertEqual("00 04 80 00 20 00 33 33", hexencode(tup))
self.assertEqual("02 03 01 04", # delta: [3, 1, 4]
hexencode(deltas))
def test_toXML_badDeltaFormat(self):
writer = XMLWriter(BytesIO())
g = TupleVariation(AXES, ["String"])
with CapturingLogHandler(log, "ERROR") as captor:
g.toXML(writer, ["wdth"])
self.assertIn("bad delta format", [r.msg for r in captor.records])
self.assertEqual([
'<tuple>',
'<coord axis="wdth" max="0.5" min="0.3" value="0.4"/>',
'<!-- bad delta #0 -->',
'</tuple>',
], TupleVariationTest.xml_lines(writer))
def fromXML(self, name, attrs, content, ttFont):
if name == "version":
self.majorVersion = int(attrs.get("major", "1"))
self.minorVersion = int(attrs.get("minor", "0"))
elif name == "tuple":
valueCount = len(ttFont["cvt "].values)
var = TupleVariation({}, [None] * valueCount)
self.variations.append(var)
for tupleElement in content:
if isinstance(tupleElement, tuple):
tupleName, tupleAttrs, tupleContent = tupleElement
var.fromXML(tupleName, tupleAttrs, tupleContent)
def _add_gvar(font, model, master_ttfs, tolerance=0.5, optimize=True):
assert tolerance >= 0
log.info("Generating gvar")
assert "gvar" not in font
gvar = font["gvar"] = newTable('gvar')
gvar.version = 1
gvar.reserved = 0
gvar.variations = {}
for glyph in font.getGlyphOrder():
allData = [_GetCoordinates(m, glyph) for m in master_ttfs]
allCoords = [d[0] for d in allData]
allControls = [d[1] for d in allData]
control = allControls[0]
if (any(c != control for c in allControls)):
log.warning("glyph %s has incompatible masters; skipping" % glyph)
continue
del allControls
# Update gvar
gvar.variations[glyph] = []
deltas = model.getDeltas(allCoords)
supports = model.supports
assert len(deltas) == len(supports)
# Prepare for IUP optimization
origCoords = deltas[0]
endPts = control[1] if control[0] >= 1 else list(range(len(control[1])))
for i,(delta,support) in enumerate(zip(deltas[1:], supports[1:])):
if all(abs(v) <= tolerance for v in delta.array):
continue
var = TupleVariation(support, delta)
if optimize:
delta_opt = iup_delta_optimize(delta, origCoords, endPts, tolerance=tolerance)
if None in delta_opt:
# Use "optimized" version only if smaller...
var_opt = TupleVariation(support, delta_opt)
axis_tags = sorted(support.keys()) # Shouldn't matter that this is different from fvar...?
tupleData, auxData, _ = var.compile(axis_tags, [], None)
unoptimized_len = len(tupleData) + len(auxData)
tupleData, auxData, _ = var_opt.compile(axis_tags, [], None)
optimized_len = len(tupleData) + len(auxData)
if optimized_len < unoptimized_len:
var = var_opt
gvar.variations[glyph].append(var)
def test_compile_embeddedPeak_nonIntermediate_privateConstants(self):
var = TupleVariation(
{"wght": (0.0, 0.5, 0.5), "wdth": (0.0, 0.8, 0.8)},
[7, 8, 9])
tup, deltas = var.compile(
axisTags=["wght", "wdth"], sharedCoordIndices={}, sharedPoints=None)
# len(deltas)=5; flags=PRIVATE_POINT_NUMBERS|EMBEDDED_PEAK_TUPLE
# embeddedPeak=[(0.5, 0.8)]; intermediateCoord=[]
self.assertEqual("00 05 A0 00 20 00 33 33", hexencode(tup))
self.assertEqual("00 " # all points in glyph
"02 07 08 09", # delta: [7, 8, 9]
hexencode(deltas))
def test_compile_embeddedPeak_nonIntermediate_sharedPoints(self):
var = TupleVariation(
{"wght": (0.0, 0.5, 0.5), "wdth": (0.0, 0.8, 0.8)},
[(7,4), (8,5), (9,6)])
tup, deltas = var.compile(axisTags=["wght", "wdth"],
sharedCoordIndices={}, sharedPoints={0, 1, 2})
# len(deltas)=8; flags=EMBEDDED_PEAK_TUPLE
# embeddedPeak=[(0.5, 0.8)]; intermediateCoord=[]
self.assertEqual("00 08 80 00 20 00 33 33", hexencode(tup))
self.assertEqual("02 07 08 09 " # deltaX: [7, 8, 9]
"02 04 05 06", # deltaY: [4, 5, 6]
hexencode(deltas))
def test_compile_sharedPeaks_intermediate_sharedPoints(self):
var = TupleVariation(
{"wght": (0.3, 0.5, 0.7), "wdth": (0.1, 0.8, 0.9)},
[(7,4), (8,5), (9,6)])
axisTags = ["wght", "wdth"]
sharedPeakIndices = { var.compileCoord(axisTags): 0x77 }
tup, deltas = var.compile(axisTags, sharedPeakIndices,
sharedPoints={0,1,2})
# len(deltas)=8; flags=INTERMEDIATE_REGION; tupleIndex=0x77
# embeddedPeak=[]; intermediateCoord=[(0.3, 0.1), (0.7, 0.9)]
self.assertEqual("00 08 40 77 13 33 06 66 2C CD 39 9A", hexencode(tup))
self.assertEqual("02 07 08 09 " # deltaX: [7, 8, 9]
"02 04 05 06", # deltaY: [4, 5, 6]
hexencode(deltas))
def test_compile_sharedPeaks_nonIntermediate_sharedPoints(self):
var = TupleVariation(
{"wght": (0.0, 0.5, 0.5), "wdth": (0.0, 0.8, 0.8)},
[(7,4), (8,5), (9,6)])
axisTags = ["wght", "wdth"]
sharedPeakIndices = { var.compileCoord(axisTags): 0x77 }
tup, deltas = var.compile(axisTags, sharedPeakIndices,
sharedPoints={0,1,2})
# len(deltas)=8; flags=None; tupleIndex=0x77
# embeddedPeaks=[]; intermediateCoord=[]
self.assertEqual("00 08 00 77", hexencode(tup))
self.assertEqual("02 07 08 09 " # deltaX: [7, 8, 9]
"02 04 05 06", # deltaY: [4, 5, 6]
hexencode(deltas))
def test_compile_sharedPeaks_nonIntermediate_privatePoints(self):
var = TupleVariation(
{"wght": (0.0, 0.5, 0.5), "wdth": (0.0, 0.8, 0.8)},
[(7,4), (8,5), (9,6)])
axisTags = ["wght", "wdth"]
sharedPeakIndices = { var.compileCoord(axisTags): 0x77 }
tup, deltas, _ = var.compile(axisTags, sharedPeakIndices,
sharedPoints=None)
# len(deltas)=9; flags=PRIVATE_POINT_NUMBERS; tupleIndex=0x77
# embeddedPeak=[]; intermediateCoord=[]
self.assertEqual("00 09 20 77", hexencode(tup))
self.assertEqual("00 " # all points in glyph
"02 07 08 09 " # deltaX: [7, 8, 9]
"02 04 05 06", # deltaY: [4, 5, 6]
hexencode(deltas))
def test_toXML_constants(self): writer = XMLWriter(BytesIO()) g = TupleVariation(AXES, [42, None, 23, 0, -17, None]) g.toXML(writer, ["wdth", "wght", "opsz"]) self.assertEqual([ '<tuple>', '<coord axis="wdth" max="0.5" min="0.3" value="0.4"/>', '<coord axis="wght" value="1.0"/>', '<coord axis="opsz" value="-0.7"/>', '<delta cvt="0" value="42"/>', '<delta cvt="2" value="23"/>', '<delta cvt="3" value="0"/>', '<delta cvt="4" value="-17"/>', '</tuple>' ], TupleVariationTest.xml_lines(writer))
def test_compile_embeddedPeak_intermediate_privateConstants(self):
var = TupleVariation(
{"wght": (0.4, 0.5, 0.6), "wdth": (0.7, 0.8, 0.9)},
[7, 8, 9])
tup, deltas = var.compile(
axisTags = ["wght", "wdth"],
sharedCoordIndices={}, sharedPoints=None)
# len(deltas)=5;
# flags=PRIVATE_POINT_NUMBERS|INTERMEDIATE_REGION|EMBEDDED_PEAK_TUPLE
# embeddedPeak=(0.5, 0.8); intermediateCoord=[(0.4, 0.7), (0.6, 0.9)]
self.assertEqual("00 05 E0 00 20 00 33 33 19 9A 2C CD 26 66 39 9A",
hexencode(tup))
self.assertEqual("00 " # all points in glyph
"02 07 08 09", # delta: [7, 8, 9]
hexencode(deltas))
def test_toXML_points(self): writer = XMLWriter(BytesIO()) g = TupleVariation(AXES, [(9,8), None, (7,6), (0,0), (-1,-2), None]) g.toXML(writer, ["wdth", "wght", "opsz"]) self.assertEqual([ '<tuple>', '<coord axis="wdth" max="0.5" min="0.3" value="0.4"/>', '<coord axis="wght" value="1.0"/>', '<coord axis="opsz" value="-0.7"/>', '<delta pt="0" x="9" y="8"/>', '<delta pt="2" x="7" y="6"/>', '<delta pt="3" x="0" y="0"/>', '<delta pt="4" x="-1" y="-2"/>', '</tuple>' ], TupleVariationTest.xml_lines(writer))
def test_decompileDeltas_roundTrip(self): numDeltas = 30 compile = TupleVariation.compileDeltaValues_ decompile = lambda data: TupleVariation.decompileDeltas_(numDeltas, data, 0)[0] for i in range(50): deltas = random.sample(range(-128, 127), 10) deltas.extend(random.sample(range(-32768, 32767), 10)) deltas.extend([0] * 10) random.shuffle(deltas) self.assertListEqual(deltas, decompile(compile(deltas)))
def test_compileDeltaValues(self):
compileDeltaValues = lambda values: hexencode(TupleVariation.compileDeltaValues_(values))
# zeroes
self.assertEqual("80", compileDeltaValues([0]))
self.assertEqual("BF", compileDeltaValues([0] * 64))
self.assertEqual("BF 80", compileDeltaValues([0] * 65))
self.assertEqual("BF A3", compileDeltaValues([0] * 100))
self.assertEqual("BF BF BF BF", compileDeltaValues([0] * 256))
# bytes
self.assertEqual("00 01", compileDeltaValues([1]))
self.assertEqual("06 01 02 03 7F 80 FF FE", compileDeltaValues([1, 2, 3, 127, -128, -1, -2]))
self.assertEqual("3F" + (64 * " 7F"), compileDeltaValues([127] * 64))
self.assertEqual("3F" + (64 * " 7F") + " 00 7F", compileDeltaValues([127] * 65))
# words
self.assertEqual("40 66 66", compileDeltaValues([0x6666]))
self.assertEqual("43 66 66 7F FF FF FF 80 00", compileDeltaValues([0x6666, 32767, -1, -32768]))
self.assertEqual("7F" + (64 * " 11 22"), compileDeltaValues([0x1122] * 64))
self.assertEqual("7F" + (64 * " 11 22") + " 40 11 22", compileDeltaValues([0x1122] * 65))
# bytes, zeroes, bytes: a single zero is more compact when encoded as part of the bytes run
self.assertEqual("04 7F 7F 00 7F 7F", compileDeltaValues([127, 127, 0, 127, 127]))
self.assertEqual("01 7F 7F 81 01 7F 7F", compileDeltaValues([127, 127, 0, 0, 127, 127]))
self.assertEqual("01 7F 7F 82 01 7F 7F", compileDeltaValues([127, 127, 0, 0, 0, 127, 127]))
self.assertEqual("01 7F 7F 83 01 7F 7F", compileDeltaValues([127, 127, 0, 0, 0, 0, 127, 127]))
# bytes, zeroes
self.assertEqual("01 01 00", compileDeltaValues([1, 0]))
self.assertEqual("00 01 81", compileDeltaValues([1, 0, 0]))
# words, bytes, words: a single byte is more compact when encoded as part of the words run
self.assertEqual("42 66 66 00 02 77 77", compileDeltaValues([0x6666, 2, 0x7777]))
self.assertEqual("40 66 66 01 02 02 40 77 77", compileDeltaValues([0x6666, 2, 2, 0x7777]))
# words, zeroes, words
self.assertEqual("40 66 66 80 40 77 77", compileDeltaValues([0x6666, 0, 0x7777]))
self.assertEqual("40 66 66 81 40 77 77", compileDeltaValues([0x6666, 0, 0, 0x7777]))
self.assertEqual("40 66 66 82 40 77 77", compileDeltaValues([0x6666, 0, 0, 0, 0x7777]))
# words, zeroes, bytes
self.assertEqual("40 66 66 80 02 01 02 03", compileDeltaValues([0x6666, 0, 1, 2, 3]))
self.assertEqual("40 66 66 81 02 01 02 03", compileDeltaValues([0x6666, 0, 0, 1, 2, 3]))
self.assertEqual("40 66 66 82 02 01 02 03", compileDeltaValues([0x6666, 0, 0, 0, 1, 2, 3]))
# words, zeroes
self.assertEqual("40 66 66 80", compileDeltaValues([0x6666, 0]))
self.assertEqual("40 66 66 81", compileDeltaValues([0x6666, 0, 0]))
# bytes or words from floats
self.assertEqual("00 01", compileDeltaValues([1.1]))
self.assertEqual("00 02", compileDeltaValues([1.9]))
self.assertEqual("40 66 66", compileDeltaValues([0x6666 + 0.1]))
self.assertEqual("40 66 66", compileDeltaValues([0x6665 + 0.9]))
def test_compilePoints(self):
compilePoints = lambda p: TupleVariation.compilePoints(set(p), numPointsInGlyph=999)
self.assertEqual("00", hexencode(compilePoints(range(999)))) # all points in glyph
self.assertEqual("01 00 07", hexencode(compilePoints([7])))
self.assertEqual("01 80 FF FF", hexencode(compilePoints([65535])))
self.assertEqual("02 01 09 06", hexencode(compilePoints([9, 15])))
self.assertEqual("06 05 07 01 F7 02 01 F2", hexencode(compilePoints([7, 8, 255, 257, 258, 500])))
self.assertEqual("03 01 07 01 80 01 EC", hexencode(compilePoints([7, 8, 500])))
self.assertEqual("04 01 07 01 81 BE E7 0C 0F", hexencode(compilePoints([7, 8, 0xBEEF, 0xCAFE])))
self.maxDiff = None
self.assertEqual("81 2C" + # 300 points (0x12c) in total
" 7F 00" + (127 * " 01") + # first run, contains 128 points: [0 .. 127]
" 7F" + (128 * " 01") + # second run, contains 128 points: [128 .. 255]
" 2B" + (44 * " 01"), # third run, contains 44 points: [256 .. 299]
hexencode(compilePoints(range(300))))
self.assertEqual("81 8F" + # 399 points (0x18f) in total
" 7F 00" + (127 * " 01") + # first run, contains 128 points: [0 .. 127]
" 7F" + (128 * " 01") + # second run, contains 128 points: [128 .. 255]
" 7F" + (128 * " 01") + # third run, contains 128 points: [256 .. 383]
" 0E" + (15 * " 01"), # fourth run, contains 15 points: [384 .. 398]
hexencode(compilePoints(range(399))))
def test_compileCoord(self):
var = TupleVariation({"wght": (-1.0, -1.0, -1.0), "wdth": (0.4, 0.5, 0.6)}, [None] * 4)
self.assertEqual("C0 00 20 00", hexencode(var.compileCoord(["wght", "wdth"])))
self.assertEqual("20 00 C0 00", hexencode(var.compileCoord(["wdth", "wght"])))
self.assertEqual("C0 00", hexencode(var.compileCoord(["wght"])))
def test_compileDeltas_constants(self):
var = TupleVariation({}, [0, 1, 2, None, 4, 5])
cvts = {1, 2, 3, 4}
# delta for cvts: [1, 2, 4]
self.assertEqual("02 01 02 04", hexencode(var.compileDeltas(cvts)))
def test_compileDeltas_points(self):
var = TupleVariation({}, [(0,0), (1, 0), (2, 0), None, (4, 0), (5, 0)])
points = {1, 2, 3, 4}
# deltaX for points: [1, 2, 4]; deltaY for points: [0, 0, 0]
self.assertEqual("02 01 02 04 82", hexencode(var.compileDeltas(points)))
def _add_gvar(font, masterModel, master_ttfs, tolerance=0.5, optimize=True):
assert tolerance >= 0
log.info("Generating gvar")
assert "gvar" not in font
gvar = font["gvar"] = newTable('gvar')
gvar.version = 1
gvar.reserved = 0
gvar.variations = {}
for glyph in font.getGlyphOrder():
allData = [_GetCoordinates(m, glyph) for m in master_ttfs]
model, allData = masterModel.getSubModel(allData)
allCoords = [d[0] for d in allData]
allControls = [d[1] for d in allData]
control = allControls[0]
if not models.allEqual(allControls):
log.warning("glyph %s has incompatible masters; skipping" % glyph)
continue
del allControls
# Update gvar
gvar.variations[glyph] = []
deltas = model.getDeltas(allCoords)
supports = model.supports
assert len(deltas) == len(supports)
# Prepare for IUP optimization
origCoords = deltas[0]
endPts = control[1] if control[0] >= 1 else list(range(len(
control[1])))
for i, (delta, support) in enumerate(zip(deltas[1:], supports[1:])):
if all(abs(v) <= tolerance for v in delta.array):
continue
var = TupleVariation(support, delta)
if optimize:
delta_opt = iup_delta_optimize(delta,
origCoords,
endPts,
tolerance=tolerance)
if None in delta_opt:
# Use "optimized" version only if smaller...
var_opt = TupleVariation(support, delta_opt)
axis_tags = sorted(support.keys(
)) # Shouldn't matter that this is different from fvar...?
tupleData, auxData, _ = var.compile(axis_tags, [], None)
unoptimized_len = len(tupleData) + len(auxData)
tupleData, auxData, _ = var_opt.compile(
axis_tags, [], None)
optimized_len = len(tupleData) + len(auxData)
if optimized_len < unoptimized_len:
var = var_opt
gvar.variations[glyph].append(var)
def decompilePoints(data, offset): points, offset = TupleVariation.decompilePoints_(numPointsInGlyph, deHexStr(data), offset, "gvar") # Conversion to list needed for Python 3. return (list(points), offset)
def _merge_TTHinting(font, masterModel, master_ttfs, tolerance=0.5):
log.info("Merging TT hinting")
assert "cvar" not in font
# Check that the existing hinting is compatible
# fpgm and prep table
for tag in ("fpgm", "prep"):
all_pgms = [m[tag].program for m in master_ttfs if tag in m]
if len(all_pgms) == 0:
continue
if tag in font:
font_pgm = font[tag].program
else:
font_pgm = Program()
if any(pgm != font_pgm for pgm in all_pgms):
log.warning(
"Masters have incompatible %s tables, hinting is discarded." %
tag)
_remove_TTHinting(font)
return
# glyf table
for name, glyph in font["glyf"].glyphs.items():
all_pgms = [
m["glyf"][name].program for m in master_ttfs
if name in m['glyf'] and hasattr(m["glyf"][name], "program")
]
if not any(all_pgms):
continue
glyph.expand(font["glyf"])
if hasattr(glyph, "program"):
font_pgm = glyph.program
else:
font_pgm = Program()
if any(pgm != font_pgm for pgm in all_pgms if pgm):
log.warning(
"Masters have incompatible glyph programs in glyph '%s', hinting is discarded."
% name)
# TODO Only drop hinting from this glyph.
_remove_TTHinting(font)
return
# cvt table
all_cvs = [
Vector(m["cvt "].values) if 'cvt ' in m else None for m in master_ttfs
]
nonNone_cvs = models.nonNone(all_cvs)
if not nonNone_cvs:
# There is no cvt table to make a cvar table from, we're done here.
return
if not models.allEqual(len(c) for c in nonNone_cvs):
log.warning(
"Masters have incompatible cvt tables, hinting is discarded.")
_remove_TTHinting(font)
return
# We can build the cvar table now.
cvar = font["cvar"] = newTable('cvar')
cvar.version = 1
cvar.variations = []
deltas, supports = masterModel.getDeltasAndSupports(all_cvs)
for i, (delta, support) in enumerate(zip(deltas[1:], supports[1:])):
delta = [otRound(d) for d in delta]
if all(abs(v) <= tolerance for v in delta):
continue
var = TupleVariation(support, delta)
cvar.variations.append(var)
def test_hasImpact_allDeltasZero(self):
axes = {"wght":(0.0, 1.0, 1.0)}
var = TupleVariation(axes, [(0,0), (0,0), (0,0)])
self.assertTrue(var.hasImpact())
def _add_gvar(font, masterModel, master_ttfs, tolerance=0.5, optimize=True):
assert tolerance >= 0
log.info("Generating gvar")
assert "gvar" not in font
gvar = font["gvar"] = newTable('gvar')
gvar.version = 1
gvar.reserved = 0
gvar.variations = {}
glyf = font['glyf']
# use hhea.ascent of base master as default vertical origin when vmtx is missing
defaultVerticalOrigin = font['hhea'].ascent
for glyph in font.getGlyphOrder():
isComposite = glyf[glyph].isComposite()
allData = [
_GetCoordinates(m,
glyph,
defaultVerticalOrigin=defaultVerticalOrigin)
for m in master_ttfs
]
model, allData = masterModel.getSubModel(allData)
allCoords = [d[0] for d in allData]
allControls = [d[1] for d in allData]
control = allControls[0]
if not models.allEqual(allControls):
log.warning("glyph %s has incompatible masters; skipping" % glyph)
continue
del allControls
# Update gvar
gvar.variations[glyph] = []
deltas = model.getDeltas(allCoords)
supports = model.supports
assert len(deltas) == len(supports)
# Prepare for IUP optimization
origCoords = deltas[0]
endPts = control[1] if control[0] >= 1 else list(range(len(
control[1])))
for i, (delta, support) in enumerate(zip(deltas[1:], supports[1:])):
if all(abs(v) <= tolerance
for v in delta.array) and not isComposite:
continue
var = TupleVariation(support, delta)
if optimize:
delta_opt = iup_delta_optimize(delta,
origCoords,
endPts,
tolerance=tolerance)
if None in delta_opt:
"""In composite glyphs, there should be one 0 entry
to make sure the gvar entry is written to the font.
This is to work around an issue with macOS 10.14 and can be
removed once the behaviour of macOS is changed.
https://github.com/fonttools/fonttools/issues/1381
"""
if all(d is None for d in delta_opt):
delta_opt = [(0, 0)] + [None] * (len(delta_opt) - 1)
# Use "optimized" version only if smaller...
var_opt = TupleVariation(support, delta_opt)
axis_tags = sorted(support.keys(
)) # Shouldn't matter that this is different from fvar...?
tupleData, auxData, _ = var.compile(axis_tags, [], None)
unoptimized_len = len(tupleData) + len(auxData)
tupleData, auxData, _ = var_opt.compile(
axis_tags, [], None)
optimized_len = len(tupleData) + len(auxData)
if optimized_len < unoptimized_len:
var = var_opt
gvar.variations[glyph].append(var)
def _add_gvar(font, masterModel, master_ttfs, tolerance=0.5, optimize=True):
assert tolerance >= 0
log.info("Generating gvar")
assert "gvar" not in font
gvar = font["gvar"] = newTable('gvar')
gvar.version = 1
gvar.reserved = 0
gvar.variations = {}
glyf = font['glyf']
for glyph in font.getGlyphOrder():
isComposite = glyf[glyph].isComposite()
allData = [_GetCoordinates(m, glyph) for m in master_ttfs]
model, allData = masterModel.getSubModel(allData)
allCoords = [d[0] for d in allData]
allControls = [d[1] for d in allData]
control = allControls[0]
if not models.allEqual(allControls):
log.warning("glyph %s has incompatible masters; skipping" % glyph)
continue
del allControls
# Update gvar
gvar.variations[glyph] = []
deltas = model.getDeltas(allCoords)
supports = model.supports
assert len(deltas) == len(supports)
# Prepare for IUP optimization
origCoords = deltas[0]
endPts = control[1] if control[0] >= 1 else list(range(len(control[1])))
for i,(delta,support) in enumerate(zip(deltas[1:], supports[1:])):
if all(abs(v) <= tolerance for v in delta.array) and not isComposite:
continue
var = TupleVariation(support, delta)
if optimize:
delta_opt = iup_delta_optimize(delta, origCoords, endPts, tolerance=tolerance)
if None in delta_opt:
"""In composite glyphs, there should be one 0 entry
to make sure the gvar entry is written to the font.
This is to work around an issue with macOS 10.14 and can be
removed once the behaviour of macOS is changed.
https://github.com/fonttools/fonttools/issues/1381
"""
if all(d is None for d in delta_opt):
delta_opt = [(0, 0)] + [None] * (len(delta_opt) - 1)
# Use "optimized" version only if smaller...
var_opt = TupleVariation(support, delta_opt)
axis_tags = sorted(support.keys()) # Shouldn't matter that this is different from fvar...?
tupleData, auxData, _ = var.compile(axis_tags, [], None)
unoptimized_len = len(tupleData) + len(auxData)
tupleData, auxData, _ = var_opt.compile(axis_tags, [], None)
optimized_len = len(tupleData) + len(auxData)
if optimized_len < unoptimized_len:
var = var_opt
gvar.variations[glyph].append(var)
def test_hasImpact_someDeltasNotZero(self):
axes = {"wght":(0.0, 1.0, 1.0)}
var = TupleVariation(axes, [(0,0), (9,8), (7,6)])
self.assertTrue(var.hasImpact())
def test_compileIntermediateCoord(self):
var = TupleVariation({"wght": (-1.0, -1.0, 0.0), "wdth": (0.4, 0.5, 0.6)}, [None] * 4)
self.assertEqual("C0 00 19 9A 00 00 26 66", hexencode(var.compileIntermediateCoord(["wght", "wdth"])))
self.assertEqual("19 9A C0 00 26 66 00 00", hexencode(var.compileIntermediateCoord(["wdth", "wght"])))
self.assertEqual(None, var.compileIntermediateCoord(["wght"]))
self.assertEqual("19 9A 26 66", hexencode(var.compileIntermediateCoord(["wdth"])))
def test_hasImpact_allDeltasNone(self):
axes = {"wght":(0.0, 1.0, 1.0)}
var = TupleVariation(axes, [None, None, None])
self.assertFalse(var.hasImpact())
def test_build_var(tmpdir):
outPath = os.path.join(str(tmpdir), "test_var.ttf")
fb, advanceWidths, nameStrings = _setupFontBuilder(True)
pen = TTGlyphPen(None)
pen.moveTo((100, 0))
pen.lineTo((100, 400))
pen.lineTo((500, 400))
pen.lineTo((500, 000))
pen.closePath()
glyph = pen.glyph()
pen = TTGlyphPen(None)
emptyGlyph = pen.glyph()
glyphs = {
".notdef": emptyGlyph,
"A": glyph,
"a": glyph,
".null": emptyGlyph
}
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)
axes = [
('LEFT', 0, 0, 100, "Left"),
('RGHT', 0, 0, 100, "Right"),
('UPPP', 0, 0, 100, "Up"),
('DOWN', 0, 0, 100, "Down"),
]
instances = [
dict(location=dict(LEFT=0, RGHT=0, UPPP=0, DOWN=0),
stylename="TotallyNormal"),
dict(location=dict(LEFT=0, RGHT=100, UPPP=100, DOWN=0),
stylename="Right Up"),
]
fb.setupFvar(axes, instances)
variations = {}
# Four (x, y) pairs and four phantom points:
leftDeltas = [(-200, 0), (-200, 0), (0, 0), (0, 0), None, None, None, None]
rightDeltas = [(0, 0), (0, 0), (200, 0), (200, 0), None, None, None, None]
upDeltas = [(0, 0), (0, 200), (0, 200), (0, 0), None, None, None, None]
downDeltas = [(0, -200), (0, 0), (0, 0), (0, -200), None, None, None, None]
variations['a'] = [
TupleVariation(dict(RGHT=(0, 1, 1)), rightDeltas),
TupleVariation(dict(LEFT=(0, 1, 1)), leftDeltas),
TupleVariation(dict(UPPP=(0, 1, 1)), upDeltas),
TupleVariation(dict(DOWN=(0, 1, 1)), downDeltas),
]
fb.setupGvar(variations)
fb.setupOS2()
fb.setupPost()
fb.setupDummyDSIG()
fb.save(outPath)
_verifyOutput(outPath)
