def compact_class_pairs(font: TTFont, mode: str,
subtable: otTables.PairPos) -> List[otTables.PairPos]:
from fontTools.otlLib.builder import buildPairPosClassesSubtable
subtables = []
classes1: DefaultDict[int, List[str]] = defaultdict(list)
for g in subtable.Coverage.glyphs:
classes1[subtable.ClassDef1.classDefs.get(g, 0)].append(g)
classes2: DefaultDict[int, List[str]] = defaultdict(list)
for g, i in subtable.ClassDef2.classDefs.items():
classes2[i].append(g)
all_pairs = {}
for i, class1 in enumerate(subtable.Class1Record):
for j, class2 in enumerate(class1.Class2Record):
if is_really_zero(class2):
continue
all_pairs[(tuple(sorted(classes1[i])),
tuple(sorted(classes2[j])))] = (
getattr(class2, "Value1", None),
getattr(class2, "Value2", None),
)
if len(mode) == 1 and mode in "123456789":
grouped_pairs = cluster_pairs_by_class2_coverage_custom_cost(
font, all_pairs, int(mode))
for pairs in grouped_pairs:
subtables.append(
buildPairPosClassesSubtable(pairs, font.getReverseGlyphMap()))
else:
raise ValueError(f"Bad {GPOS_COMPACT_MODE_ENV_KEY}={mode}")
return subtables
def compact_class_pairs(
font: TTFont, level: int, subtable: otTables.PairPos
) -> List[otTables.PairPos]:
from fontTools.otlLib.builder import buildPairPosClassesSubtable
subtables = []
classes1: DefaultDict[int, List[str]] = defaultdict(list)
for g in subtable.Coverage.glyphs:
classes1[subtable.ClassDef1.classDefs.get(g, 0)].append(g)
classes2: DefaultDict[int, List[str]] = defaultdict(list)
for g, i in subtable.ClassDef2.classDefs.items():
classes2[i].append(g)
all_pairs = {}
for i, class1 in enumerate(subtable.Class1Record):
for j, class2 in enumerate(class1.Class2Record):
if is_really_zero(class2):
continue
all_pairs[(tuple(sorted(classes1[i])), tuple(sorted(classes2[j])))] = (
getattr(class2, "Value1", None),
getattr(class2, "Value2", None),
)
grouped_pairs = cluster_pairs_by_class2_coverage_custom_cost(font, all_pairs, level)
for pairs in grouped_pairs:
subtables.append(buildPairPosClassesSubtable(pairs, font.getReverseGlyphMap()))
return subtables
def test_buildPairPosClassesSubtable(self):
d20 = builder.buildValue({"XPlacement": -20})
d50 = builder.buildValue({"XPlacement": -50})
d0 = builder.buildValue({})
d8020 = builder.buildValue({"XPlacement": -80, "YPlacement": -20})
subtable = builder.buildPairPosClassesSubtable(
{
(tuple("A"), tuple(["zero"])): (d0, d50),
(tuple("A"), tuple(["one", "two"])): (None, d20),
(tuple(["B", "C"]), tuple(["zero"])): (d8020, d50),
},
self.GLYPHMAP,
)
assert getXML(subtable.toXML) == [
'<PairPos Format="2">',
" <Coverage>",
' <Glyph value="A"/>',
' <Glyph value="B"/>',
' <Glyph value="C"/>',
" </Coverage>",
' <ValueFormat1 value="3"/>',
' <ValueFormat2 value="1"/>',
" <ClassDef1>",
' <ClassDef glyph="A" class="1"/>',
" </ClassDef1>",
" <ClassDef2>",
' <ClassDef glyph="one" class="1"/>',
' <ClassDef glyph="two" class="1"/>',
' <ClassDef glyph="zero" class="2"/>',
" </ClassDef2>",
" <!-- Class1Count=2 -->",
" <!-- Class2Count=3 -->",
' <Class1Record index="0">',
' <Class2Record index="0">',
" </Class2Record>",
' <Class2Record index="1">',
" </Class2Record>",
' <Class2Record index="2">',
' <Value1 XPlacement="-80" YPlacement="-20"/>',
' <Value2 XPlacement="-50"/>',
" </Class2Record>",
" </Class1Record>",
' <Class1Record index="1">',
' <Class2Record index="0">',
" </Class2Record>",
' <Class2Record index="1">',
' <Value2 XPlacement="-20"/>',
" </Class2Record>",
' <Class2Record index="2">',
" <Value1/>",
' <Value2 XPlacement="-50"/>',
" </Class2Record>",
" </Class1Record>",
"</PairPos>",
]
def test_buildPairPosClassesSubtable(self):
d20 = builder.buildValue({"XPlacement": -20})
d50 = builder.buildValue({"XPlacement": -50})
d0 = builder.buildValue({})
d8020 = builder.buildValue({"XPlacement": -80, "YPlacement": -20})
subtable = builder.buildPairPosClassesSubtable(
{
(frozenset("A"), frozenset(["zero"])): (d0, d50),
(frozenset("A"), frozenset(["one", "two"])): (None, d20),
(frozenset(["B", "C"]), frozenset(["zero"])): (d8020, d50),
}, self.GLYPHMAP)
self.maxDiff = None
self.assertEqual(
getXML(subtable.toXML), '<PairPos Format="2">'
' <Coverage>'
' <Glyph value="A"/>'
' <Glyph value="B"/>'
' <Glyph value="C"/>'
' </Coverage>'
' <ValueFormat1 value="3"/>'
' <ValueFormat2 value="1"/>'
' <ClassDef1>'
' <ClassDef glyph="A" class="1"/>'
' </ClassDef1>'
' <ClassDef2>'
' <ClassDef glyph="one" class="1"/>'
' <ClassDef glyph="two" class="1"/>'
' <ClassDef glyph="zero" class="2"/>'
' </ClassDef2>'
' <!-- Class1Count=2 -->'
' <!-- Class2Count=3 -->'
' <Class1Record index="0">'
' <Class2Record index="0">'
' </Class2Record>'
' <Class2Record index="1">'
' </Class2Record>'
' <Class2Record index="2">'
' <Value1 XPlacement="-80" YPlacement="-20"/>'
' <Value2 XPlacement="-50"/>'
' </Class2Record>'
' </Class1Record>'
' <Class1Record index="1">'
' <Class2Record index="0">'
' </Class2Record>'
' <Class2Record index="1">'
' <Value2 XPlacement="-20"/>'
' </Class2Record>'
' <Class2Record index="2">'
' <Value1/>'
' <Value2 XPlacement="-50"/>'
' </Class2Record>'
' </Class1Record>'
'</PairPos>')
def test_buildPairPosClassesSubtable(self):
d20 = builder.buildValue({"XPlacement": -20})
d50 = builder.buildValue({"XPlacement": -50})
d0 = builder.buildValue({})
d8020 = builder.buildValue({"XPlacement": -80, "YPlacement": -20})
subtable = builder.buildPairPosClassesSubtable({
(tuple("A",), tuple(["zero"])): (d0, d50),
(tuple("A",), tuple(["one", "two"])): (None, d20),
(tuple(["B", "C"]), tuple(["zero"])): (d8020, d50),
}, self.GLYPHMAP)
self.maxDiff = None
self.assertEqual(getXML(subtable.toXML),
'<PairPos Format="2">'
' <Coverage>'
' <Glyph value="A"/>'
' <Glyph value="B"/>'
' <Glyph value="C"/>'
' </Coverage>'
' <ValueFormat1 value="3"/>'
' <ValueFormat2 value="1"/>'
' <ClassDef1>'
' <ClassDef glyph="A" class="1"/>'
' </ClassDef1>'
' <ClassDef2>'
' <ClassDef glyph="one" class="1"/>'
' <ClassDef glyph="two" class="1"/>'
' <ClassDef glyph="zero" class="2"/>'
' </ClassDef2>'
' <!-- Class1Count=2 -->'
' <!-- Class2Count=3 -->'
' <Class1Record index="0">'
' <Class2Record index="0">'
' </Class2Record>'
' <Class2Record index="1">'
' </Class2Record>'
' <Class2Record index="2">'
' <Value1 XPlacement="-80" YPlacement="-20"/>'
' <Value2 XPlacement="-50"/>'
' </Class2Record>'
' </Class1Record>'
' <Class1Record index="1">'
' <Class2Record index="0">'
' </Class2Record>'
' <Class2Record index="1">'
' <Value2 XPlacement="-20"/>'
' </Class2Record>'
' <Class2Record index="2">'
' <Value1/>'
' <Value2 XPlacement="-50"/>'
' </Class2Record>'
' </Class1Record>'
'</PairPos>')
def flush_(self):
if self.classDef1_ is None or self.classDef2_ is None:
return
st = otl.buildPairPosClassesSubtable(self.values_,
self.builder_.glyphMap)
self.subtables_.append(st)
def flush_(self):
if self.classDef1_ is None or self.classDef2_ is None:
return
st = otl.buildPairPosClassesSubtable(self.values_, self.builder_.glyphMap)
self.subtables_.append(st)
