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- from lxml.etree import Element
- import struct
- from data import VFixed
- from transform.bytes import outputTableBytes
- class maxp:
- def __init__(self, glyphs):
- self.version = VFixed('1.0') # hard-coded
- self.numGlyphs = len(glyphs["all"])
- # sbix determines the number of glyphs from this data point.
- self.maxPoints = 0
- self.maxContours = 0
- self.maxCompositePoints = 0
- self.maxCompositeContours = 0
- self.maxZones = 0
- self.maxTwilightPoints = 0
- self.maxStorage = 1
- self.maxFunctionDefs = 1
- self.maxInstructionDefs = 0
- self.maxStackElements = 64
- self.maxSizeOfInstructions = 0
- self.maxComponentElements = 0
- self.maxComponentDepth = 0
- def toTTX(self):
- # TTX re-calculates most, if not all of these values by itself, but it's still worth giving them anyway.
- maxp = Element("maxp")
- maxp.append(Element("tableVersion", {'value': self.version.toHexStr() })) # TTX wants the version in this format.
- maxp.append(Element("numGlyphs", {'value': str(self.numGlyphs) })) # TTX re-calculates this, but I'm giving it the right value anyway.
- maxp.append(Element("maxPoints", {'value': str(self.maxPoints) }))
- maxp.append(Element("maxContours", {'value': str(self.maxContours) }))
- maxp.append(Element("maxCompositePoints", {'value': str(self.maxCompositePoints) }))
- maxp.append(Element("maxCompositeContours", {'value': str(self.maxCompositeContours) }))
- maxp.append(Element("maxZones", {'value': str(self.maxZones) }))
- maxp.append(Element("maxTwilightPoints", {'value': str(self.maxTwilightPoints) }))
- maxp.append(Element("maxStorage", {'value': str(self.maxStorage) }))
- maxp.append(Element("maxFunctionDefs", {'value': str(self.maxFunctionDefs) }))
- maxp.append(Element("maxInstructionDefs", {'value': str(self.maxInstructionDefs) }))
- maxp.append(Element("maxStackElements", {'value': str(self.maxStackElements) }))
- maxp.append(Element("maxSizeOfInstructions", {'value': str(self.maxSizeOfInstructions) }))
- maxp.append(Element("maxComponentElements", {'value': str(self.maxComponentElements) }))
- maxp.append(Element("maxComponentDepth", {'value': str(self.maxComponentDepth) }))
- return maxp
- def toBytes(self):
- maxp = struct.pack( ">iHHHHHHHHHHHHHH"
- , int(self.version) # Fixed (Int32)
- , self.numGlyphs # UInt16
- , self.maxPoints # UInt16
- , self.maxContours # UInt16
- , self.maxCompositePoints # UInt16
- , self.maxCompositeContours # UInt16
- , self.maxZones # UInt16
- , self.maxTwilightPoints # UInt16
- , self.maxStorage # UInt16
- , self.maxFunctionDefs # UInt16
- , self.maxInstructionDefs # UInt16
- , self.maxStackElements # UInt16
- , self.maxSizeOfInstructions # UInt16
- , self.maxComponentElements # UInt16
- , self.maxComponentDepth # UInt16
- )
- return outputTableBytes(maxp)
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