def AddGlyphVariations(font, thin, regular, black):
assert "gvar" not in font
gvar = font["gvar"] = table__g_v_a_r()
gvar.version = 1
gvar.reserved = 0
gvar.variations = {}
for glyphName in regular.getGlyphOrder():
regularCoord = GetCoordinates(regular, glyphName)
thinCoord = GetCoordinates(thin, glyphName)
blackCoord = GetCoordinates(black, glyphName)
if not regularCoord or not blackCoord or not thinCoord:
logging.warning("glyph %s not present in all input fonts",
glyphName)
continue
if (len(regularCoord) != len(blackCoord)
or len(regularCoord) != len(thinCoord)):
logging.warning(
"glyph %s has not the same number of "
"control points in all input fonts", glyphName)
continue
thinDelta = []
blackDelta = []
for ((regX, regY), (blackX, blackY), (thinX, thinY)) in \
zip(regularCoord, blackCoord, thinCoord):
thinDelta.append(((thinX - regX, thinY - regY)))
blackDelta.append((blackX - regX, blackY - regY))
thinVar = GlyphVariation({"wght": (-1.0, -1.0, 0.0)}, thinDelta)
blackVar = GlyphVariation({"wght": (0.0, 1.0, 1.0)}, blackDelta)
gvar.variations[glyphName] = [thinVar, blackVar]
def test_compileGlyph_onlyRedundantVariations(self):
table = table__g_v_a_r()
axes = {"wght": (0.3, 0.4, 0.5), "opsz": (0.7, 0.8, 0.9)}
table.variations = {
"glyphname": [
GlyphVariation(axes, [None] * 4),
GlyphVariation(axes, [None] * 4),
GlyphVariation(axes, [None] * 4)
]
}
self.assertEqual(
b"", table.compileGlyph_("glyphname", 8, ["wght", "opsz"], {}))
def _add_gvar(font, model, master_ttfs):
print("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)):
warnings.warn("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)
for i, (delta, support) in enumerate(zip(deltas[1:], supports[1:])):
var = GlyphVariation(support, delta)
gvar.variations[glyph].append(var)
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, _ = GlyphVariation.decompileCoord_(["wght", "wdth"], data, 0)
axisValues = {axis: (val, val, val) for axis, val in values.items()}
gvar = GlyphVariation(axisValues, [None] * 4)
self.assertEqual("7F B9 80 35",
hexencode(gvar.compileCoord(["wght", "wdth"])))
def _add_gvar(font, axes, master_ttfs, master_locs, base_idx):
# Make copies for modification
master_ttfs = master_ttfs[:]
master_locs = [l.copy() for l in master_locs]
axis_tags = axes.keys()
# Normalize master locations. TODO Move to a separate function.
for tag, (name, lower, default, upper) in axes.items():
for l in master_locs:
v = l[tag]
if v == default:
v = 0
elif v < default:
v = (v - default) / (default - lower)
else:
v = (v - default) / (upper - default)
l[tag] = v
# Locations are normalized now
print("Normalized master positions:")
print(master_locs)
print("Generating gvar")
assert "gvar" not in font
gvar = font["gvar"] = table__g_v_a_r()
gvar.version = 1
gvar.reserved = 0
gvar.variations = {}
# Assume single-model for now.
model = VariationModel(master_locs)
model_base_idx = model.mapping[base_idx]
assert 0 == model_base_idx
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)):
warnings.warn("glyph %s has incompatible masters; skipping" %
glyph)
continue
del allControls
gvar.variations[glyph] = []
deltas = model.getDeltas(allCoords)
supports = model.supports
assert len(deltas) == len(supports)
for i, (delta, support) in enumerate(zip(deltas, supports)):
if i == model_base_idx:
continue
var = GlyphVariation(support, delta)
gvar.variations[glyph].append(var)
def test_toXML_allDeltasNone(self):
writer = XMLWriter(BytesIO())
axes = {"wght": (0.0, 1.0, 1.0)}
g = GlyphVariation(axes, [None] * 5)
g.toXML(writer, ["wght", "wdth"])
self.assertEqual([
'<tuple>', '<coord axis="wght" value="1.0"/>',
'<!-- no deltas -->', '</tuple>'
], GlyphVariationTest.xml_lines(writer))
def test_compileCoord(self):
gvar = GlyphVariation(
{
"wght": (-1.0, -1.0, -1.0),
"wdth": (0.4, 0.5, 0.6)
}, [None] * 4)
self.assertEqual("C0 00 20 00",
hexencode(gvar.compileCoord(["wght", "wdth"])))
self.assertEqual("20 00 C0 00",
hexencode(gvar.compileCoord(["wdth", "wght"])))
self.assertEqual("C0 00", hexencode(gvar.compileCoord(["wght"])))
def test_compileGlyph_roundTrip(self):
table = table__g_v_a_r()
axisTags = ["wght", "wdth"]
numPointsInGlyph = 4
glyphCoords = [(1, 1), (2, 2), (3, 3), (4, 4)]
gvar1 = GlyphVariation(
{
"wght": (0.5, 1.0, 1.0),
"wdth": (1.0, 1.0, 1.0)
}, glyphCoords)
gvar2 = GlyphVariation(
{
"wght": (1.0, 1.0, 1.0),
"wdth": (1.0, 1.0, 1.0)
}, glyphCoords)
table.variations = {"oslash": [gvar1, gvar2]}
data = table.compileGlyph_("oslash", numPointsInGlyph, axisTags, {})
self.assertEqual([gvar1, gvar2],
table.decompileGlyph_(numPointsInGlyph, {}, axisTags,
data))
def test_compileIntermediateCoord(self):
gvar = GlyphVariation(
{
"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(gvar.compileIntermediateCoord(["wght", "wdth"])))
self.assertEqual(
"19 9A C0 00 26 66 00 00",
hexencode(gvar.compileIntermediateCoord(["wdth", "wght"])))
self.assertEqual(None, gvar.compileIntermediateCoord(["wght"]))
self.assertEqual("19 9A 26 66",
hexencode(gvar.compileIntermediateCoord(["wdth"])))
def test_fromXML(self):
g = GlyphVariation({}, [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="-0.5"/>'
'<delta pt="1" x="33" y="44"/>'
'<delta pt="2" x="-2" y="170"/>'):
g.fromXML(name, attrs, content)
self.assertEqual(
{
"wdth": (0.3, 0.4, 0.5),
"wght": (0.0, 1.0, 1.0),
"opsz": (-0.5, -0.5, 0.0)
}, g.axes)
self.assertEqual([None, (33, 44), (-2, 170), None], g.coordinates)
def test_compile_embeddedCoords_nonIntermediate_sharedPoints(self):
gvar = GlyphVariation(
{
"wght": (0.0, 0.5, 0.5),
"wdth": (0.0, 0.8, 0.8)
}, [(7, 4), (8, 5), (9, 6)])
axisTags = ["wght", "wdth"]
tuple, data = gvar.compile(axisTags,
sharedCoordIndices={},
sharedPoints={0, 1, 2})
# len(data)=8; flags=EMBEDDED_TUPLE_COORD
# embeddedCoord=[(0.5, 0.8)]; intermediateCoord=[]
self.assertEqual("00 08 80 00 20 00 33 33", hexencode(tuple))
self.assertEqual(
"02 07 08 09 " # deltaX: [7, 8, 9]
"02 04 05 06", # deltaY: [4, 5, 6]
hexencode(data))
def test_toXML(self):
writer = XMLWriter(BytesIO())
axes = {
"wdth": (0.3, 0.4, 0.5),
"wght": (0.0, 1.0, 1.0),
"opsz": (-0.7, -0.7, 0.0)
}
g = GlyphVariation(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>'
], GlyphVariationTest.xml_lines(writer))
def test_compile_embeddedCoords_nonIntermediate_privatePoints(self):
gvar = GlyphVariation(
{
"wght": (0.0, 0.5, 0.5),
"wdth": (0.0, 0.8, 0.8)
}, [(7, 4), (8, 5), (9, 6)])
axisTags = ["wght", "wdth"]
tuple, data = gvar.compile(axisTags,
sharedCoordIndices={},
sharedPoints=None)
# len(data)=13; flags=PRIVATE_POINT_NUMBERS|EMBEDDED_TUPLE_COORD
# embeddedCoord=[(0.5, 0.8)]; intermediateCoord=[]
self.assertEqual("00 09 A0 00 20 00 33 33", hexencode(tuple))
self.assertEqual(
"00 " # all points in glyph
"02 07 08 09 " # deltaX: [7, 8, 9]
"02 04 05 06", # deltaY: [4, 5, 6]
hexencode(data))
def test_compile_sharedCoords_nonIntermediate_sharedPoints(self):
gvar = GlyphVariation(
{
"wght": (0.0, 0.5, 0.5),
"wdth": (0.0, 0.8, 0.8)
}, [(7, 4), (8, 5), (9, 6)])
axisTags = ["wght", "wdth"]
sharedCoordIndices = {gvar.compileCoord(axisTags): 0x77}
tuple, data = gvar.compile(axisTags,
sharedCoordIndices,
sharedPoints={0, 1, 2})
# len(data)=8; flags=None; tupleIndex=0x77
# embeddedCoord=[]; intermediateCoord=[]
self.assertEqual("00 08 00 77", hexencode(tuple))
self.assertEqual(
"02 07 08 09 " # deltaX: [7, 8, 9]
"02 04 05 06", # deltaY: [4, 5, 6]
hexencode(data))
def test_compile_sharedCoords_intermediate_sharedPoints(self):
gvar = GlyphVariation(
{
"wght": (0.3, 0.5, 0.7),
"wdth": (0.1, 0.8, 0.9)
}, [(7, 4), (8, 5), (9, 6)])
axisTags = ["wght", "wdth"]
sharedCoordIndices = {gvar.compileCoord(axisTags): 0x77}
tuple, data = gvar.compile(axisTags,
sharedCoordIndices,
sharedPoints={0, 1, 2})
# len(data)=8; flags=INTERMEDIATE_TUPLE; tupleIndex=0x77
# embeddedCoord=[]; intermediateCoord=[(0.3, 0.1), (0.7, 0.9)]
self.assertEqual("00 08 40 77 13 33 06 66 2C CD 39 9A",
hexencode(tuple))
self.assertEqual(
"02 07 08 09 " # deltaX: [7, 8, 9]
"02 04 05 06", # deltaY: [4, 5, 6]
hexencode(data))
def test_fromXML(self):
g = GlyphVariation({}, [None] * 4)
g.fromXML("coord", {
"axis": "wdth",
"min": "0.3",
"value": "0.4",
"max": "0.5"
}, [])
g.fromXML("coord", {"axis": "wght", "value": "1.0"}, [])
g.fromXML("coord", {"axis": "opsz", "value": "-0.5"}, [])
g.fromXML("delta", {"pt": "1", "x": "33", "y": "44"}, [])
g.fromXML("delta", {"pt": "2", "x": "-2", "y": "170"}, [])
self.assertEqual(
{
"wdth": (0.3, 0.4, 0.5),
"wght": (0.0, 1.0, 1.0),
"opsz": (-0.5, -0.5, 0.0)
}, g.axes)
self.assertEqual([None, (33, 44), (-2, 170), None], g.coordinates)
def test_compile_sharedCoords_intermediate_privatePoints(self):
gvar = GlyphVariation(
{
"wght": (0.0, 0.5, 1.0),
"wdth": (0.0, 0.8, 1.0)
}, [(7, 4), (8, 5), (9, 6)])
axisTags = ["wght", "wdth"]
sharedCoordIndices = {gvar.compileCoord(axisTags): 0x77}
tuple, data = gvar.compile(axisTags,
sharedCoordIndices,
sharedPoints=None)
# len(data)=13; flags=PRIVATE_POINT_NUMBERS; tupleIndex=0x77
# embeddedCoord=[]; intermediateCoord=[(0.0, 0.0), (1.0, 1.0)]
self.assertEqual("00 09 60 77 00 00 00 00 40 00 40 00",
hexencode(tuple))
self.assertEqual(
"00 " # all points in glyph
"02 07 08 09 " # deltaX: [7, 8, 9]
"02 04 05 06", # deltaY: [4, 5, 6]
hexencode(data))
def test_compileSharedCoords(self):
table = table__g_v_a_r()
table.variations = {}
deltas = [None] * 4
table.variations["A"] = [
GlyphVariation({
"wght": (1.0, 1.0, 1.0),
"wdth": (0.5, 0.7, 1.0)
}, deltas)
]
table.variations["B"] = [
GlyphVariation({
"wght": (1.0, 1.0, 1.0),
"wdth": (0.2, 0.7, 1.0)
}, deltas),
GlyphVariation({
"wght": (1.0, 1.0, 1.0),
"wdth": (0.2, 0.8, 1.0)
}, deltas)
]
table.variations["C"] = [
GlyphVariation({
"wght": (1.0, 1.0, 1.0),
"wdth": (0.3, 0.7, 1.0)
}, deltas),
GlyphVariation({
"wght": (1.0, 1.0, 1.0),
"wdth": (0.3, 0.8, 1.0)
}, deltas),
GlyphVariation({
"wght": (1.0, 1.0, 1.0),
"wdth": (0.3, 0.9, 1.0)
}, deltas)
]
# {"wght":1.0, "wdth":0.7} is shared 3 times; {"wght":1.0, "wdth":0.8} is shared twice.
# Min and max values are not part of the shared coordinate pool and should get ignored.
result = table.compileSharedCoords_(["wght", "wdth"])
self.assertEqual(["40 00 2C CD", "40 00 33 33"],
[hexencode(c) for c in result])
def test_equal_differentCoordinates(self):
gvar1 = GlyphVariation({"wght": (0.0, 1.0, 1.0)}, [(0, 0), (9, 8),
(7, 6)])
gvar2 = GlyphVariation({"wght": (0.0, 1.0, 1.0)}, [(0, 0), (9, 8)])
self.assertNotEqual(gvar1, gvar2)
def test_hasImpact_allDeltasZero(self):
axes = {"wght": (0.0, 1.0, 1.0)}
gvar = GlyphVariation(axes, [(0, 0), (0, 0), (0, 0)])
self.assertTrue(gvar.hasImpact())
def test_compileDeltas(self):
gvar = GlyphVariation({}, [(0, 0), (1, 0), (2, 0), (3, 3)])
points = {1, 2}
# deltaX for points: [1, 2]; deltaY for points: [0, 0]
self.assertEqual("01 01 02 81", hexencode(gvar.compileDeltas(points)))
def test_equal(self):
gvar1 = GlyphVariation({"wght": (0.0, 1.0, 1.0)}, [(0, 0), (9, 8),
(7, 6)])
gvar2 = GlyphVariation({"wght": (0.0, 1.0, 1.0)}, [(0, 0), (9, 8),
(7, 6)])
self.assertEqual(gvar1, gvar2)
def test_hasImpact_allDeltasNone(self):
axes = {"wght": (0.0, 1.0, 1.0)}
gvar = GlyphVariation(axes, [None, None, None])
self.assertFalse(gvar.hasImpact())
def test_hasImpact_someDeltasNotZero(self):
axes = {"wght": (0.0, 1.0, 1.0)}
gvar = GlyphVariation(axes, [(0, 0), (9, 8), (7, 6)])
self.assertTrue(gvar.hasImpact())
