def setFeatureTables(self, gdef=None, gsub=None, gpos=None):
self.gdef = None
if gdef is not None:
self.gdef = GDEF().loadFromFontTools(gdef)
self.gsub = None
if gsub is not None:
self.gsub = GSUB().loadFromFontTools(gsub, self.reversedCMAP, self.gdef)
self.gpos = None
if gpos is not None:
self.gpos = GPOS().loadFromFontTools(gpos, self.reversedCMAP, self.gdef)
def setFeatureTables(self, gdef=None, gsub=None, gpos=None):
self.gdef = None
if gdef is not None:
self.gdef = GDEF().loadFromFontTools(gdef)
self.gsub = None
if gsub is not None:
self.gsub = GSUB().loadFromFontTools(gsub, self.reversedCMAP,
self.gdef)
self.gpos = None
if gpos is not None:
self.gpos = GPOS().loadFromFontTools(gpos, self.reversedCMAP,
self.gdef)
class LayoutEngine(object):
def __init__(self):
self.cmap = {}
self.reversedCMAP = {}
self.gdef = None
self.gsub = None
self.gpos = None
self.fallbackGlyph = ".notdef"
# ------------
# data setting
# ------------
def setCMAP(self, cmap):
self.cmap = cmap
self.reversedCMAP = reverseCMAP(cmap)
if self.gsub is not None:
self.gsub.setCMAP(self.reversedCMAP)
if self.gpos is not None:
self.gpos.setCMAP(self.reversedCMAP)
def setFeatureTables(self, gdef=None, gsub=None, gpos=None):
self.gdef = None
if gdef is not None:
self.gdef = GDEF().loadFromFontTools(gdef)
self.gsub = None
if gsub is not None:
self.gsub = GSUB().loadFromFontTools(gsub, self.reversedCMAP, self.gdef)
self.gpos = None
if gpos is not None:
self.gpos = GPOS().loadFromFontTools(gpos, self.reversedCMAP, self.gdef)
# -----------------
# string processing
# -----------------
def stringToGlyphNames(self, string):
glyphNames = []
for c in string:
c = tounicode(c)
v = ord(c)
if v in self.cmap:
glyphNames.append(self.cmap[v])
elif self.fallbackGlyph is not None:
glyphNames.append(self.fallbackGlyph)
return glyphNames
def stringToGlyphRecords(self, string):
return [GlyphRecord(glyphName) for glyphName in self.stringToGlyphNames(string)]
def glyphListToGlyphRecords(self, glyphList):
glyphRecords = []
for glyphName in glyphList:
record = GlyphRecord(glyphName)
glyphRecords.append(record)
return glyphRecords
def process(self, stringOrGlyphList, script="latn", langSys=None, rightToLeft=False, case="unchanged", logger=None):
if isinstance(stringOrGlyphList, basestring):
stringOrGlyphList = self.stringToGlyphNames(stringOrGlyphList)
if case != "unchanged":
l = langSys
if l is not None:
l = l.strip()
stringOrGlyphList = convertCase(case, stringOrGlyphList, self.cmap, self.reversedCMAP, l, self.fallbackGlyph)
glyphRecords = self.glyphListToGlyphRecords(stringOrGlyphList)
if rightToLeft:
glyphRecords.reverse()
if logger:
logger.logStart()
glyphNames = [r.glyphName for r in glyphRecords]
logger.logMainSettings(glyphNames, script, langSys)
if self.gsub is not None:
if logger:
logger.logTableStart(self.gsub)
glyphRecords = self.gsub.process(glyphRecords, script=script, langSys=langSys, logger=logger)
if logger:
logger.logResults(glyphRecords)
logger.logTableEnd()
if self.gpos is not None:
if logger:
logger.logTableStart(self.gpos)
glyphRecords = self.gpos.process(glyphRecords, script=script, langSys=langSys, logger=logger)
if logger:
logger.logResults(glyphRecords)
logger.logTableEnd()
if logger:
logger.logEnd()
return glyphRecords
# ------------------
# feature management
# ------------------
def getScriptList(self):
gsub = []
gpos = []
if self.gsub is not None:
gsub = self.gsub.getScriptList()
if self.gpos is not None:
gpos = self.gpos.getScriptList()
return sorted(set(gsub + gpos))
def getLanguageList(self):
gsub = []
gpos = []
if self.gsub is not None:
gsub = self.gsub.getLanguageList()
if self.gpos is not None:
gpos = self.gpos.getLanguageList()
return sorted(set(gsub + gpos))
def getFeatureList(self):
gsub = []
gpos = []
if self.gsub is not None:
gsub = self.gsub.getFeatureList()
if self.gpos is not None:
gpos = self.gpos.getFeatureList()
return sorted(set(gsub + gpos))
def getFeatureState(self, featureTag):
gsubState = None
gposState = None
if self.gsub is not None:
if featureTag in self.gsub:
gsubState = self.gsub.getFeatureState(featureTag)
if self.gpos is not None:
if featureTag in self.gpos:
gposState = self.gpos.getFeatureState(featureTag)
if gsubState is not None and gposState is not None:
if gsubState != gposState:
raise CompositorError("Inconsistently applied feature: %s" % featureTag)
if gsubState is not None:
return gsubState
if gposState is not None:
return gposState
raise CompositorError("Feature %s is is not contained in GSUB or GPOS" % featureTag)
def setFeatureState(self, featureTag, state):
if self.gsub is not None:
if featureTag in self.gsub:
self.gsub.setFeatureState(featureTag, state)
if self.gpos is not None:
if featureTag in self.gpos:
self.gpos.setFeatureState(featureTag, state)