def build(self):
st = otTables.MarkLigPos()
st.Format = 1
st.MarkCoverage = \
self.buildCoverage_(self.marks, otTables.MarkCoverage)
markClasses = self.buildMarkClasses_(self.marks)
st.ClassCount = len(markClasses)
self.setMarkArray_(self.marks, markClasses, st)
st.LigatureCoverage = \
self.buildCoverage_(self.ligatures, otTables.LigatureCoverage)
st.LigatureArray = otTables.LigatureArray()
st.LigatureArray.LigatureCount = len(self.ligatures)
st.LigatureArray.LigatureAttach = []
for lig in st.LigatureCoverage.glyphs:
components = self.ligatures[lig]
attach = otTables.LigatureAttach()
attach.ComponentCount = len(components)
attach.ComponentRecord = []
for component in components:
crec = otTables.ComponentRecord()
attach.ComponentRecord.append(crec)
crec.LigatureAnchor = []
for markClass in sorted(markClasses.keys(),
key=markClasses.get):
crec.LigatureAnchor.append(component.get(markClass))
st.LigatureArray.LigatureAttach.append(attach)
return self.buildLookup_([st])
def buildComponentRecord(anchors):
"""[otTables.Anchor, otTables.Anchor, ...] --> otTables.ComponentRecord"""
if not anchors:
return None
self = ot.ComponentRecord()
self.LigatureAnchor = anchors
return self
def makeLigatureRecords(data, coverage, c, classCount):
records = [None] * len(coverage.glyphs)
idx = {g:i for i,g in enumerate(coverage.glyphs)}
for (glyph,klass,compIdx,compCount),anchor in data.items():
record = records[idx[glyph]]
if record is None:
record = records[idx[glyph]] = ot.LigatureAttach()
record.ComponentCount = compCount
record.ComponentRecord = [ot.ComponentRecord() for i in range(compCount)]
for compRec in record.ComponentRecord:
compRec.LigatureAnchor = [None] * classCount
assert record.ComponentCount == compCount, (glyph, record.ComponentCount, compCount)
anchors = record.ComponentRecord[compIdx - 1].LigatureAnchor
assert anchors[klass] is None, (glyph, compIdx, klass)
anchors[klass] = anchor
return records
