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[VARC] Use one varIndexBase only

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This commit is contained in:
Behdad Esfahbod 2023-12-14 20:59:49 -07:00
parent aad01a9d85
commit 1a1e9e198b
2 changed files with 21 additions and 22 deletions
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1
Lib/fontTools/ttLib/tables/otConverters.py
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@ -1922,7 +1922,6 @@ class CFF2Index(BaseConverter):
item.toXML(xmlWriter, font, [("index", i)], name)
class LookupFlag(UShort):
def xmlWrite(self, xmlWriter, font, value, name, attrs):
xmlWriter.simpletag(name, attrs + [("value", value)])

42
Lib/fontTools/ttLib/tables/otTables.py
View File

@ -104,9 +104,8 @@ class VarComponent:
def __init__(self):
self.glyphName = None
self.location = {}
self.locationVarIdxBase = NO_VARIATION_INDEX
self.transform = DecomposedTransform()
self.transformVarIdxBase = NO_VARIATION_INDEX
self.varIndexBase = NO_VARIATION_INDEX
def decompile(self, data, font):
i = 0
@ -148,10 +147,6 @@ class VarComponent:
axes = font["fvar"].axes
self.location = {axes[i].axisTag: v for i, v in zip(axisIndices, axisValues)}
if flags & VarComponentFlags.AXIS_VALUES_HAVE_VARIATION:
self.locationVarIdxBase = struct.unpack(">L", data[i : i + 4])[0]
i += 4
def read_transform_component(data, values):
nonlocal i
if flags & values.flag:
@ -173,8 +168,11 @@ class VarComponent:
if not (flags & VarComponentFlags.HAVE_SCALE_Y):
self.transform.scaleY = self.transform.scaleX
if flags & VarComponentFlags.TRANSFORM_HAS_VARIATION:
self.transformVarIdxBase = struct.unpack(">L", data[i : i + 4])[0]
if flags & (
VarComponentFlags.AXIS_VALUES_HAVE_VARIATION
| VarComponentFlags.TRANSFORM_HAS_VARIATION
):
self.varIndexBase = struct.unpack(">L", data[i : i + 4])[0]
i += 4
return data[i:]
@ -230,12 +228,6 @@ class VarComponent:
axisValues.byteswap()
data.append(bytes(axisValues))
if self.locationVarIdxBase != NO_VARIATION_INDEX:
flags |= VarComponentFlags.AXIS_VALUES_HAVE_VARIATION
data.append(struct.pack(">L", self.locationVarIdxBase))
elif flags & VarComponentFlags.AXIS_VALUES_HAVE_VARIATION:
flags ^= VarComponentFlags.AXIS_VALUES_HAVE_VARIATION
def write_transform_component(value, values):
if flags & values.flag:
return struct.pack(
@ -248,11 +240,11 @@ class VarComponent:
value = getattr(self.transform, attr_name)
data.append(write_transform_component(value, mapping_values))
if self.transformVarIdxBase != NO_VARIATION_INDEX:
flags |= VarComponentFlags.TRANSFORM_HAS_VARIATION
data.append(struct.pack(">L", self.transformVarIdxBase))
elif flags & VarComponentFlags.TRANSFORM_HAS_VARIATION:
flags ^= VarComponentFlags.TRANSFORM_HAS_VARIATION
if flags & (
VarComponentFlags.AXIS_VALUES_HAVE_VARIATION
| VarComponentFlags.TRANSFORM_HAS_VARIATION
):
data.append(struct.pack(">L", self.varIndexBase))
return struct.pack(">H", flags) + bytesjoin(data)
@ -262,6 +254,11 @@ class VarComponent:
if hasattr(self, "flags"):
attrs = attrs + [("flags", hex(self.flags))]
# TODO Move to an element?
if self.varIndexBase != NO_VARIATION_INDEX:
attrs = attrs + [("varIndexBase", self.varIndexBase)]
# TODO Move transform into it's own element?
for attr_name, mapping in VAR_COMPONENT_TRANSFORM_MAPPING.items():
v = getattr(self.transform, attr_name)
if v != mapping.defaultValue:
@ -287,6 +284,9 @@ class VarComponent:
if "flags" in attrs:
self.flags = safeEval(attrs["flags"])
if "varIndexBase" in attrs:
self.varIndexBase = safeEval(attrs["varIndexBase"])
for attr_name, mapping in VAR_COMPONENT_TRANSFORM_MAPPING.items():
if attr_name not in attrs:
continue
@ -318,7 +318,6 @@ class VarComponent:
class VarCompositeGlyph(BaseTable):
def populateDefaults(self, propagator=None):
if not hasattr(self, "components"):
self.components = []
@ -351,8 +350,8 @@ class VarCompositeGlyph(BaseTable):
component.fromXML(name, attrs, content, font)
self.components.append(component)
class VarCompositeGlyphs(BaseTable):
class VarCompositeGlyphs(BaseTable):
def populateDefaults(self, propagator=None):
if not hasattr(self, "glyphs"):
self.glyphs = []
@ -366,6 +365,7 @@ class VarCompositeGlyphs(BaseTable):
glyph.fromXML(eltName, eltAttrs, eltContent, font)
self.glyphs.append(glyph)
class AATStateTable(object):
def __init__(self):
self.GlyphClasses = {} # GlyphID --> GlyphClass