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[merge] Move layout pre/post-Merge code to merge.layout

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This commit is contained in:
Behdad Esfahbod 2021-12-16 10:28:03 -07:00
parent 01fcec35c6
commit 8dc3d5b322
2 changed files with 86 additions and 82 deletions
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84
Lib/fontTools/merge/__init__.py
View File

@ -152,90 +152,10 @@ class Merger(object):
return returnTable
def _preMerge(self, font):
# Map indices to references
GDEF = font.get('GDEF')
GSUB = font.get('GSUB')
GPOS = font.get('GPOS')
for t in [GSUB, GPOS]:
if not t: continue
if t.table.LookupList:
lookupMap = {i:v for i,v in enumerate(t.table.LookupList.Lookup)}
t.table.LookupList.mapLookups(lookupMap)
t.table.FeatureList.mapLookups(lookupMap)
if GDEF and GDEF.table.Version >= 0x00010002:
markFilteringSetMap = {i:v for i,v in enumerate(GDEF.table.MarkGlyphSetsDef.Coverage)}
t.table.LookupList.mapMarkFilteringSets(markFilteringSetMap)
if t.table.FeatureList and t.table.ScriptList:
featureMap = {i:v for i,v in enumerate(t.table.FeatureList.FeatureRecord)}
t.table.ScriptList.mapFeatures(featureMap)
# TODO FeatureParams nameIDs
layoutPreMerge(font)
def _postMerge(self, font):
# Map references back to indices
GDEF = font.get('GDEF')
GSUB = font.get('GSUB')
GPOS = font.get('GPOS')
for t in [GSUB, GPOS]:
if not t: continue
if t.table.FeatureList and t.table.ScriptList:
# Collect unregistered (new) features.
featureMap = GregariousIdentityDict(t.table.FeatureList.FeatureRecord)
t.table.ScriptList.mapFeatures(featureMap)
# Record used features.
featureMap = AttendanceRecordingIdentityDict(t.table.FeatureList.FeatureRecord)
t.table.ScriptList.mapFeatures(featureMap)
usedIndices = featureMap.s
# Remove unused features
t.table.FeatureList.FeatureRecord = [f for i,f in enumerate(t.table.FeatureList.FeatureRecord) if i in usedIndices]
# Map back to indices.
featureMap = NonhashableDict(t.table.FeatureList.FeatureRecord)
t.table.ScriptList.mapFeatures(featureMap)
t.table.FeatureList.FeatureCount = len(t.table.FeatureList.FeatureRecord)
if t.table.LookupList:
# Collect unregistered (new) lookups.
lookupMap = GregariousIdentityDict(t.table.LookupList.Lookup)
t.table.FeatureList.mapLookups(lookupMap)
t.table.LookupList.mapLookups(lookupMap)
# Record used lookups.
lookupMap = AttendanceRecordingIdentityDict(t.table.LookupList.Lookup)
t.table.FeatureList.mapLookups(lookupMap)
t.table.LookupList.mapLookups(lookupMap)
usedIndices = lookupMap.s
# Remove unused lookups
t.table.LookupList.Lookup = [l for i,l in enumerate(t.table.LookupList.Lookup) if i in usedIndices]
# Map back to indices.
lookupMap = NonhashableDict(t.table.LookupList.Lookup)
t.table.FeatureList.mapLookups(lookupMap)
t.table.LookupList.mapLookups(lookupMap)
t.table.LookupList.LookupCount = len(t.table.LookupList.Lookup)
if GDEF and GDEF.table.Version >= 0x00010002:
markFilteringSetMap = NonhashableDict(GDEF.table.MarkGlyphSetsDef.Coverage)
t.table.LookupList.mapMarkFilteringSets(markFilteringSetMap)
# TODO FeatureParams nameIDs
layoutPostMerge(font)
__all__ = [

84
Lib/fontTools/merge/layout.py
View File

@ -376,3 +376,87 @@ def mapFeatures(self, featureMap):
for s in self.ScriptRecord:
if not s or not s.Script: continue
s.Script.mapFeatures(featureMap)
def layoutPreMerge(font):
# Map indices to references
GDEF = font.get('GDEF')
GSUB = font.get('GSUB')
GPOS = font.get('GPOS')
for t in [GSUB, GPOS]:
if not t: continue
if t.table.LookupList:
lookupMap = {i:v for i,v in enumerate(t.table.LookupList.Lookup)}
t.table.LookupList.mapLookups(lookupMap)
t.table.FeatureList.mapLookups(lookupMap)
if GDEF and GDEF.table.Version >= 0x00010002:
markFilteringSetMap = {i:v for i,v in enumerate(GDEF.table.MarkGlyphSetsDef.Coverage)}
t.table.LookupList.mapMarkFilteringSets(markFilteringSetMap)
if t.table.FeatureList and t.table.ScriptList:
featureMap = {i:v for i,v in enumerate(t.table.FeatureList.FeatureRecord)}
t.table.ScriptList.mapFeatures(featureMap)
# TODO FeatureParams nameIDs
def layoutPostMerge(font):
# Map references back to indices
GDEF = font.get('GDEF')
GSUB = font.get('GSUB')
GPOS = font.get('GPOS')
for t in [GSUB, GPOS]:
if not t: continue
if t.table.FeatureList and t.table.ScriptList:
# Collect unregistered (new) features.
featureMap = GregariousIdentityDict(t.table.FeatureList.FeatureRecord)
t.table.ScriptList.mapFeatures(featureMap)
# Record used features.
featureMap = AttendanceRecordingIdentityDict(t.table.FeatureList.FeatureRecord)
t.table.ScriptList.mapFeatures(featureMap)
usedIndices = featureMap.s
# Remove unused features
t.table.FeatureList.FeatureRecord = [f for i,f in enumerate(t.table.FeatureList.FeatureRecord) if i in usedIndices]
# Map back to indices.
featureMap = NonhashableDict(t.table.FeatureList.FeatureRecord)
t.table.ScriptList.mapFeatures(featureMap)
t.table.FeatureList.FeatureCount = len(t.table.FeatureList.FeatureRecord)
if t.table.LookupList:
# Collect unregistered (new) lookups.
lookupMap = GregariousIdentityDict(t.table.LookupList.Lookup)
t.table.FeatureList.mapLookups(lookupMap)
t.table.LookupList.mapLookups(lookupMap)
# Record used lookups.
lookupMap = AttendanceRecordingIdentityDict(t.table.LookupList.Lookup)
t.table.FeatureList.mapLookups(lookupMap)
t.table.LookupList.mapLookups(lookupMap)
usedIndices = lookupMap.s
# Remove unused lookups
t.table.LookupList.Lookup = [l for i,l in enumerate(t.table.LookupList.Lookup) if i in usedIndices]
# Map back to indices.
lookupMap = NonhashableDict(t.table.LookupList.Lookup)
t.table.FeatureList.mapLookups(lookupMap)
t.table.LookupList.mapLookups(lookupMap)
t.table.LookupList.LookupCount = len(t.table.LookupList.Lookup)
if GDEF and GDEF.table.Version >= 0x00010002:
markFilteringSetMap = NonhashableDict(GDEF.table.MarkGlyphSetsDef.Coverage)
t.table.LookupList.mapMarkFilteringSets(markFilteringSetMap)
# TODO FeatureParams nameIDs