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[GX] Fix default coordinate values for non-intermeditate 'gvar' tuples

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This commit is contained in:
Sascha Brawer 2015-04-29 17:15:46 +02:00
parent 50a2ada262
commit 936d079428
2 changed files with 44 additions and 18 deletions
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30
Lib/fontTools/ttLib/tables/_g_v_a_r.py
View File

@ -205,10 +205,11 @@ class table__g_v_a_r(DefaultTable.DefaultTable):
coord = sharedCoords[flags & TUPLE_INDEX_MASK]
else:
coord, pos = GlyphVariation.decompileCoord_(axisTags, data, pos)
minCoord = maxCoord = coord
if (flags & INTERMEDIATE_TUPLE) != 0:
minCoord, pos = GlyphVariation.decompileCoord_(axisTags, data, pos)
maxCoord, pos = GlyphVariation.decompileCoord_(axisTags, data, pos)
else:
minCoord, maxCoord = table__g_v_a_r.computeMinMaxCoord_(coord)
axes = {}
for axis in axisTags:
coords = minCoord[axis], coord[axis], maxCoord[axis]
@ -226,6 +227,15 @@ class table__g_v_a_r(DefaultTable.DefaultTable):
deltas[p] = (x, y)
return GlyphVariation(axes, deltas)
@staticmethod
def computeMinMaxCoord_(coord):
minCoord = {}
maxCoord = {}
for (axis, value) in coord.iteritems():
minCoord[axis] = min(value, 0.0) # -0.3 --> -0.3; 0.7 --> 0.0
maxCoord[axis] = max(value, 0.0) # -0.3 --> 0.0; 0.7 --> 0.7
return (minCoord, maxCoord)
def toXML(self, writer, ttFont):
writer.simpletag("version", value=self.version)
writer.newline()
@ -293,7 +303,9 @@ class GlyphVariation:
value = self.axes.get(axis)
if value != None:
minValue, value, maxValue = value
if minValue == value and maxValue == value:
defaultMinValue = min(value, 0.0) # -0.3 --> -0.3; 0.7 --> 0.0
defaultMaxValue = max(value, 0.0) # -0.3 --> 0.0; 0.7 --> 0.7
if minValue == defaultMinValue and maxValue == defaultMaxValue:
writer.simpletag("coord", axis=axis, value=value)
else:
writer.simpletag("coord", axis=axis, value=value,
@ -315,10 +327,12 @@ class GlyphVariation:
def fromXML(self, name, attrs, content):
if name == "coord":
axis = attrs["axis"]
value = attrs["value"]
minValue = attrs.get("min", value)
maxValue = attrs.get("max", value)
self.axes[axis] = (safeEval(minValue), safeEval(value), safeEval(maxValue))
value = float(attrs["value"])
defaultMinValue = min(value, 0.0) # -0.3 --> -0.3; 0.7 --> 0.0
defaultMaxValue = max(value, 0.0) # -0.3 --> 0.0; 0.7 --> 0.7
minValue = float(attrs.get("min", defaultMinValue))
maxValue = float(attrs.get("max", defaultMaxValue))
self.axes[axis] = (minValue, value, maxValue)
elif name == "delta":
point = safeEval(attrs["pt"])
x = safeEval(attrs["x"])
@ -336,7 +350,9 @@ class GlyphVariation:
needed = False
for axis in axisTags:
minValue, value, maxValue = self.axes.get(axis, (0.0, 0.0, 0.0))
if (minValue != value) or (maxValue != value):
defaultMinValue = min(value, 0.0) # -0.3 --> -0.3; 0.7 --> 0.0
defaultMaxValue = max(value, 0.0) # -0.3 --> 0.0; 0.7 --> 0.7
if (minValue != defaultMinValue) or (maxValue != defaultMaxValue):
needed = True
break
if not needed:

32
Lib/fontTools/ttLib/tables/_g_v_a_r_test.py
View File

@ -126,7 +126,7 @@ class GlyphVariationTableTest(unittest.TestCase):
sharedCoords = table.decompileSharedCoords_(axes, SKIA_SHARED_COORDS)
tuples = table.decompileTuples_(18, sharedCoords, axes, SKIA_GVAR_I)
self.assertEqual(8, len(tuples))
self.assertEqual({"wght": (1.0, 1.0, 1.0)}, tuples[0].axes)
self.assertEqual({"wght": (0.0, 1.0, 1.0)}, tuples[0].axes)
self.assertEqual("257,0 -127,0 -128,58 -130,90 -130,62 -130,67 -130,32 -127,0 257,0 "
"259,14 260,64 260,21 260,69 258,124 0,0 130,0 0,0 0,0",
" ".join(["%d,%d" % c for c in tuples[0].coordinates]))
@ -135,17 +135,23 @@ class GlyphVariationTableTest(unittest.TestCase):
table = table__g_v_a_r()
self.assertEqual([], table.decompileTuples_(numPoints=5, sharedCoords=[], axisTags=[], data=b""))
def test_computeMinMaxCord(self):
coord = {"wght": -0.3, "wdth": 0.7}
minCoord, maxCoord = table__g_v_a_r.computeMinMaxCoord_(coord)
self.assertEqual({"wght": -0.3, "wdth": 0.0}, minCoord)
self.assertEqual({"wght": 0.0, "wdth": 0.7}, maxCoord)
class GlyphVariationTest(unittest.TestCase):
def test_toXML(self):
writer = XMLWriter(StringIO())
axes = {"wdth":(0.3, 0.4, 0.5), "wght":(1.0, 1.0, 1.0)}
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, GlyphCoordinates([(9,8), (7,6), (0,0), (-1,-2)]))
g.toXML(writer, ["wght", "wdth"])
g.toXML(writer, ["wdth", "wght", "opsz"])
self.assertEqual([
'<tuple>',
'<coord axis="wght" value="1.0"/>',
'<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="1" x="7" y="6"/>',
'<delta pt="3" x="-1" y="-2"/>',
@ -154,24 +160,28 @@ class GlyphVariationTest(unittest.TestCase):
def test_toXML_allDeltasZero(self):
writer = XMLWriter(StringIO())
axes = {"wdth":(0.3, 0.4, 0.5), "wght":(1.0, 1.0, 1.0)}
axes = {"wght":(0.0, 1.0, 1.0)}
g = GlyphVariation(axes, GlyphCoordinates.zeros(5))
g.toXML(writer, ["wght", "wdth"])
self.assertEqual([
'<tuple>',
'<coord axis="wght" value="1.0"/>',
'<coord axis="wdth" max="0.5" min="0.3" value="0.4"/>',
'<!-- all deltas are (0,0) -->',
'</tuple>'
], GlyphVariationTest.xml_lines(writer))
def test_fromXML(self):
g = GlyphVariation({}, GlyphCoordinates.zeros(4))
g.fromXML("coord", {"axis":"wght", "value":"1.0"}, [])
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({"wght":(1.0, 1.0, 1.0), "wdth":(0.3, 0.4, 0.5)}, g.axes)
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("0,0 33,44 -2,170 0,0", " ".join(["%d,%d" % c for c in g.coordinates]))
def test_compileCoord(self):
@ -181,9 +191,9 @@ class GlyphVariationTest(unittest.TestCase):
self.assertEqual("C0 00", hexencode(gvar.compileCoord(["wght"])))
def test_compileIntermediateCoord(self):
gvar = GlyphVariation({"wght": (-1.0, -1.0, -1.0), "wdth": (0.4, 0.5, 0.6)}, GlyphCoordinates.zeros(4))
self.assertEqual("C0 00 19 9A C0 00 26 66", hexencode(gvar.compileIntermediateCoord(["wght", "wdth"])))
self.assertEqual("19 9A C0 00 26 66 C0 00", hexencode(gvar.compileIntermediateCoord(["wdth", "wght"])))
gvar = GlyphVariation({"wght": (-1.0, -1.0, 0.0), "wdth": (0.4, 0.5, 0.6)}, GlyphCoordinates.zeros(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"])))