def buildPairPosClassesSubtable(pairs,
glyphMap,
valueFormat1=None,
valueFormat2=None):
coverage = set()
classDef1 = ClassDefBuilder(useClass0=True)
classDef2 = ClassDefBuilder(useClass0=False)
for gc1, gc2 in sorted(pairs):
coverage.update(gc1)
classDef1.add(gc1)
classDef2.add(gc2)
self = ot.PairPos()
self.Format = 2
self.ValueFormat1 = _getValueFormat(valueFormat1, pairs.values(), 0)
self.ValueFormat2 = _getValueFormat(valueFormat2, pairs.values(), 1)
self.Coverage = buildCoverage(coverage, glyphMap)
self.ClassDef1 = classDef1.build()
self.ClassDef2 = classDef2.build()
classes1 = classDef1.classes()
classes2 = classDef2.classes()
self.Class1Record = []
for c1 in classes1:
rec1 = ot.Class1Record()
rec1.Class2Record = []
self.Class1Record.append(rec1)
for c2 in classes2:
rec2 = ot.Class2Record()
rec2.Value1, rec2.Value2 = pairs.get((c1, c2), (None, None))
rec1.Class2Record.append(rec2)
self.Class1Count = len(self.Class1Record)
self.Class2Count = len(classes2)
return self
def _Lookup_PairPosFormat2_subtables_flatten(lst, font):
assert allEqual([l.ValueFormat2 == 0 for l in lst
if l.Class1Record]), "Report bug against fonttools."
self = ot.PairPos()
self.Format = 2
self.Coverage = ot.Coverage()
self.ValueFormat1 = reduce(int.__or__, [l.ValueFormat1 for l in lst], 0)
self.ValueFormat2 = reduce(int.__or__, [l.ValueFormat2 for l in lst], 0)
# Align them
glyphs, _ = _merge_GlyphOrders(font, [v.Coverage.glyphs for v in lst])
self.Coverage.glyphs = glyphs
matrices = _PairPosFormat2_align_matrices(self,
lst,
font,
transparent=True)
matrix = self.Class1Record = []
for rows in zip(*matrices):
row = ot.Class1Record()
matrix.append(row)
row.Class2Record = []
row = row.Class2Record
for cols in zip(*list(r.Class2Record for r in rows)):
col = next(iter(c for c in cols if c is not None))
row.append(col)
return self
def _PairPosFormat2_align_matrices(self, lst, font, transparent=False):
matrices = [l.Class1Record for l in lst]
# Align first classes
self.ClassDef1, classes = _ClassDef_merge_classify(
[l.ClassDef1 for l in lst], [l.Coverage.glyphs for l in lst])
self.Class1Count = len(classes)
new_matrices = []
for l, matrix in zip(lst, matrices):
nullRow = None
coverage = set(l.Coverage.glyphs)
classDef1 = l.ClassDef1.classDefs
class1Records = []
for classSet in classes:
exemplarGlyph = next(iter(classSet))
if exemplarGlyph not in coverage:
# Follow-up to e6125b353e1f54a0280ded5434b8e40d042de69f,
# Fixes https://github.com/googlei18n/fontmake/issues/470
# Again, revert 8d441779e5afc664960d848f62c7acdbfc71d7b9
# when merger becomes selfless.
nullRow = None
if nullRow is None:
nullRow = ot.Class1Record()
class2records = nullRow.Class2Record = []
# TODO: When merger becomes selfless, revert e6125b353e1f54a0280ded5434b8e40d042de69f
for _ in range(l.Class2Count):
if transparent:
rec2 = None
else:
rec2 = ot.Class2Record()
rec2.Value1 = otBase.ValueRecord(
self.ValueFormat1
) if self.ValueFormat1 else None
rec2.Value2 = otBase.ValueRecord(
self.ValueFormat2
) if self.ValueFormat2 else None
class2records.append(rec2)
rec1 = nullRow
else:
klass = classDef1.get(exemplarGlyph, 0)
rec1 = matrix[klass] # TODO handle out-of-range?
class1Records.append(rec1)
new_matrices.append(class1Records)
matrices = new_matrices
del new_matrices
# Align second classes
self.ClassDef2, classes = _ClassDef_merge_classify(
[l.ClassDef2 for l in lst])
self.Class2Count = len(classes)
new_matrices = []
for l, matrix in zip(lst, matrices):
classDef2 = l.ClassDef2.classDefs
class1Records = []
for rec1old in matrix:
oldClass2Records = rec1old.Class2Record
rec1new = ot.Class1Record()
class2Records = rec1new.Class2Record = []
for classSet in classes:
if not classSet: # class=0
rec2 = oldClass2Records[0]
else:
exemplarGlyph = next(iter(classSet))
klass = classDef2.get(exemplarGlyph, 0)
rec2 = oldClass2Records[klass]
class2Records.append(copy.deepcopy(rec2))
class1Records.append(rec1new)
new_matrices.append(class1Records)
matrices = new_matrices
del new_matrices
return matrices
def parsePair(lines, font, _lookupMap=None):
self = ot.PairPos()
self.ValueFormat1 = self.ValueFormat2 = 0
typ = lines.peeks()[0].split()[0].lower()
if typ in ('left', 'right'):
self.Format = 1
values = {}
for line in lines:
assert len(line) == 4, line
side = line[0].split()[0].lower()
assert side in ('left', 'right'), side
what = line[0][len(side):].title().replace(' ', '')
mask = valueRecordFormatDict[what][0]
glyph1, glyph2 = makeGlyphs(line[1:3])
value = int(line[3])
if not glyph1 in values: values[glyph1] = {}
if not glyph2 in values[glyph1]: values[glyph1][glyph2] = (ValueRecord(),ValueRecord())
rec2 = values[glyph1][glyph2]
if side == 'left':
self.ValueFormat1 |= mask
vr = rec2[0]
else:
self.ValueFormat2 |= mask
vr = rec2[1]
assert not hasattr(vr, what), (vr, what)
setattr(vr, what, value)
self.Coverage = makeCoverage(set(values.keys()), font)
self.PairSet = []
for glyph1 in self.Coverage.glyphs:
values1 = values[glyph1]
pairset = ot.PairSet()
records = pairset.PairValueRecord = []
for glyph2 in sorted(values1.keys(), key=font.getGlyphID):
values2 = values1[glyph2]
pair = ot.PairValueRecord()
pair.SecondGlyph = glyph2
pair.Value1 = values2[0]
pair.Value2 = values2[1] if self.ValueFormat2 else None
records.append(pair)
pairset.PairValueCount = len(pairset.PairValueRecord)
self.PairSet.append(pairset)
self.PairSetCount = len(self.PairSet)
elif typ.endswith('class'):
self.Format = 2
classDefs = [None, None]
while lines.peeks()[0].endswith("class definition begin"):
typ = lines.peek()[0][:-len("class definition begin")].lower()
idx,klass = {
'first': (0,ot.ClassDef1),
'second': (1,ot.ClassDef2),
}[typ]
assert classDefs[idx] is None
classDefs[idx] = parseClassDef(lines, font, klass=klass)
self.ClassDef1, self.ClassDef2 = classDefs
self.Class1Count, self.Class2Count = (1+max(c.classDefs.values()) for c in classDefs)
self.Class1Record = [ot.Class1Record() for i in range(self.Class1Count)]
for rec1 in self.Class1Record:
rec1.Class2Record = [ot.Class2Record() for j in range(self.Class2Count)]
for rec2 in rec1.Class2Record:
rec2.Value1 = ValueRecord()
rec2.Value2 = ValueRecord()
for line in lines:
assert len(line) == 4, line
side = line[0].split()[0].lower()
assert side in ('left', 'right'), side
what = line[0][len(side):].title().replace(' ', '')
mask = valueRecordFormatDict[what][0]
class1, class2, value = (int(x) for x in line[1:4])
rec2 = self.Class1Record[class1].Class2Record[class2]
if side == 'left':
self.ValueFormat1 |= mask
vr = rec2.Value1
else:
self.ValueFormat2 |= mask
vr = rec2.Value2
assert not hasattr(vr, what), (vr, what)
setattr(vr, what, value)
for rec1 in self.Class1Record:
for rec2 in rec1.Class2Record:
rec2.Value1 = ValueRecord(self.ValueFormat1, rec2.Value1)
rec2.Value2 = ValueRecord(self.ValueFormat2, rec2.Value2) \
if self.ValueFormat2 else None
self.Coverage = makeCoverage(set(self.ClassDef1.classDefs.keys()), font)
else:
assert 0, typ
return self
def _PairPosFormat2_align_matrices(self, lst, font, transparent=False):
matrices = [l.Class1Record for l in lst]
# Align first classes
self.ClassDef1, classes = _ClassDef_merge_classify(
[l.ClassDef1 for l in lst], allGlyphs=set(self.Coverage.glyphs))
_ClassDef_calculate_Format(self.ClassDef1, font)
self.Class1Count = len(classes)
new_matrices = []
for l, matrix in zip(lst, matrices):
nullRow = None
coverage = set(l.Coverage.glyphs)
classDef1 = l.ClassDef1.classDefs
class1Records = []
for classSet in classes:
exemplarGlyph = next(iter(classSet))
if exemplarGlyph not in coverage:
if nullRow is None:
nullRow = ot.Class1Record()
class2records = nullRow.Class2Record = []
# TODO: When merger becomes selfless, revert e6125b353e1f54a0280ded5434b8e40d042de69f
for _ in range(l.Class2Count):
if transparent:
rec2 = None
else:
rec2 = ot.Class2Record()
rec2.Value1 = otBase.ValueRecord(
self.ValueFormat1
) if self.ValueFormat1 else None
rec2.Value2 = otBase.ValueRecord(
self.ValueFormat2
) if self.ValueFormat2 else None
class2records.append(rec2)
rec1 = nullRow
else:
klass = classDef1.get(exemplarGlyph, 0)
rec1 = matrix[klass] # TODO handle out-of-range?
class1Records.append(rec1)
new_matrices.append(class1Records)
matrices = new_matrices
del new_matrices
# Align second classes
self.ClassDef2, classes = _ClassDef_merge_classify(
[l.ClassDef2 for l in lst])
_ClassDef_calculate_Format(self.ClassDef2, font)
self.Class2Count = len(classes)
new_matrices = []
for l, matrix in zip(lst, matrices):
classDef2 = l.ClassDef2.classDefs
class1Records = []
for rec1old in matrix:
oldClass2Records = rec1old.Class2Record
rec1new = ot.Class1Record()
class2Records = rec1new.Class2Record = []
for classSet in classes:
if not classSet: # class=0
rec2 = oldClass2Records[0]
else:
exemplarGlyph = next(iter(classSet))
klass = classDef2.get(exemplarGlyph, 0)
rec2 = oldClass2Records[klass]
class2Records.append(rec2)
class1Records.append(rec1new)
new_matrices.append(class1Records)
matrices = new_matrices
del new_matrices
return matrices
def _PairPosFormat2_merge(self, lst, merger):
merger.mergeObjects(self, lst,
exclude=('Coverage',
'ClassDef1', 'Class1Count',
'ClassDef2', 'Class2Count',
'Class1Record'))
# Align coverages
glyphs, _ = _merge_GlyphOrders(merger.font,
[v.Coverage.glyphs for v in lst])
self.Coverage.glyphs = glyphs
glyphSet = set(glyphs)
# Currently, if the coverage of PairPosFormat2 subtables are different,
# we do NOT bother walking down the subtable list when filling in new
# rows for alignment. As such, this is only correct if current subtable
# is the last subtable in the lookup. Ensure that.
#
# Note that our canonicalization process merges some PairPosFormat2's,
# so in reality this might not be common.
#
# TODO: Remove this requirement
for l,subtables in zip(lst,merger.lookup_subtables):
if l.Coverage.glyphs != glyphs:
assert l == subtables[-1]
matrices = [l.Class1Record for l in lst]
# Align first classes
self.ClassDef1, classes = _ClassDef_merge_classify([l.ClassDef1 for l in lst], allGlyphs=glyphSet)
_ClassDef_calculate_Format(self.ClassDef1, merger.font)
self.Class1Count = len(classes)
new_matrices = []
for l,matrix in zip(lst, matrices):
nullRow = None
coverage = set(l.Coverage.glyphs)
classDef1 = l.ClassDef1.classDefs
class1Records = []
for classSet in classes:
exemplarGlyph = next(iter(classSet))
if exemplarGlyph not in coverage:
if nullRow is None:
nullRow = ot.Class1Record()
class2records = nullRow.Class2Record = []
# TODO: When merger becomes selfless, revert e6125b353e1f54a0280ded5434b8e40d042de69f
for _ in range(l.Class2Count):
rec2 = ot.Class2Record()
rec2.Value1 = otBase.ValueRecord(l.ValueFormat1) if l.ValueFormat1 else None
rec2.Value2 = otBase.ValueRecord(l.ValueFormat2) if l.ValueFormat2 else None
class2records.append(rec2)
rec1 = nullRow
else:
klass = classDef1.get(exemplarGlyph, 0)
rec1 = matrix[klass] # TODO handle out-of-range?
class1Records.append(rec1)
new_matrices.append(class1Records)
matrices = new_matrices
del new_matrices
# Align second classes
self.ClassDef2, classes = _ClassDef_merge_classify([l.ClassDef2 for l in lst])
_ClassDef_calculate_Format(self.ClassDef2, merger.font)
self.Class2Count = len(classes)
new_matrices = []
for l,matrix in zip(lst, matrices):
classDef2 = l.ClassDef2.classDefs
class1Records = []
for rec1old in matrix:
oldClass2Records = rec1old.Class2Record
rec1new = ot.Class1Record()
class2Records = rec1new.Class2Record = []
for classSet in classes:
if not classSet: # class=0
rec2 = oldClass2Records[0]
else:
exemplarGlyph = next(iter(classSet))
klass = classDef2.get(exemplarGlyph, 0)
rec2 = oldClass2Records[klass]
class2Records.append(rec2)
class1Records.append(rec1new)
new_matrices.append(class1Records)
matrices = new_matrices
del new_matrices
self.Class1Record = list(matrices[0]) # TODO move merger to be selfless
merger.mergeLists(self.Class1Record, matrices)
def _PairPosFormat2_merge(self, lst, merger):
merger.mergeObjects(self,
lst,
exclude=('Coverage', 'ClassDef1', 'Class1Count',
'ClassDef2', 'Class2Count', 'Class1Record'))
# Align coverages
glyphs, _ = _merge_GlyphOrders(merger.font,
[v.Coverage.glyphs for v in lst])
self.Coverage.glyphs = glyphs
glyphSet = set(glyphs)
# Currently, if the coverage of PairPosFormat2 subtables are different,
# we do NOT bother walking down the subtable list when filling in new
# rows for alignment. As such, this is only correct if current subtable
# is the last subtable in the lookup. Ensure that.
# TODO: Remove this requirement
for l, lookup in zip(lst, merger.lookups):
if l.Coverage.glyphs != glyphs:
assert l == lookup.SubTable[-1]
matrices = [l.Class1Record for l in lst]
# Align first classes
self.ClassDef1, classes = _ClassDef_merge_classify(
[l.ClassDef1 for l in lst], allGlyphs=glyphSet)
self.Class1Count = len(classes)
new_matrices = []
for l, matrix in zip(lst, matrices):
nullRow = None
coverage = set(l.Coverage.glyphs)
classDef1 = l.ClassDef1.classDefs
class1Records = []
for classSet in classes:
exemplarGlyph = next(iter(classSet))
if exemplarGlyph not in coverage:
if nullRow is None:
rec2 = ot.Class2Record()
rec2.Value1 = otBase.ValueRecord(
l.ValueFormat1) if l.ValueFormat1 else None
rec2.Value2 = otBase.ValueRecord(
l.ValueFormat2) if l.ValueFormat2 else None
nullRow = ot.Class1Record()
nullRow.Class2Record = [rec2] * l.Class2Count
rec1 = nullRow
else:
klass = classDef1.get(exemplarGlyph, 0)
rec1 = matrix[klass] # TODO handle out-of-range?
class1Records.append(rec1)
new_matrices.append(class1Records)
matrices = new_matrices
del new_matrices
# Align second classes
self.ClassDef2, classes = _ClassDef_merge_classify(
[l.ClassDef2 for l in lst])
self.Class2Count = len(classes)
new_matrices = []
for l, matrix in zip(lst, matrices):
classDef2 = l.ClassDef2.classDefs
class1Records = []
for rec1old in matrix:
oldClass2Records = rec1old.Class2Record
rec1new = ot.Class1Record()
class2Records = rec1new.Class2Record = []
for classSet in classes:
if not classSet: # class=0
rec2 = oldClass2Records[0]
else:
exemplarGlyph = next(iter(classSet))
klass = classDef2.get(exemplarGlyph, 0)
rec2 = oldClass2Records[klass]
class2Records.append(rec2)
class1Records.append(rec1new)
new_matrices.append(class1Records)
matrices = new_matrices
del new_matrices
self.Class1Record = list(matrices[0]) # TODO move merger to be selfless
merger.mergeLists(self.Class1Record, matrices)
