Source code for fontTools.ttLib.tables._g_a_s_p

from fontTools.misc.textTools import safeEval
from . import DefaultTable
import struct


GASP_SYMMETRIC_GRIDFIT = 0x0004
GASP_SYMMETRIC_SMOOTHING = 0x0008
GASP_DOGRAY = 0x0002
GASP_GRIDFIT = 0x0001


[docs]class table__g_a_s_p(DefaultTable.DefaultTable):
[docs] def decompile(self, data, ttFont): self.version, numRanges = struct.unpack(">HH", data[:4]) assert 0 <= self.version <= 1, "unknown 'gasp' format: %s" % self.version data = data[4:] self.gaspRange = {} for i in range(numRanges): rangeMaxPPEM, rangeGaspBehavior = struct.unpack(">HH", data[:4]) self.gaspRange[int(rangeMaxPPEM)] = int(rangeGaspBehavior) data = data[4:] assert not data, "too much data"
[docs] def compile(self, ttFont): version = 0 # ignore self.version numRanges = len(self.gaspRange) data = b"" items = sorted(self.gaspRange.items()) for rangeMaxPPEM, rangeGaspBehavior in items: data = data + struct.pack(">HH", rangeMaxPPEM, rangeGaspBehavior) if rangeGaspBehavior & ~(GASP_GRIDFIT | GASP_DOGRAY): version = 1 data = struct.pack(">HH", version, numRanges) + data return data
[docs] def toXML(self, writer, ttFont): items = sorted(self.gaspRange.items()) for rangeMaxPPEM, rangeGaspBehavior in items: writer.simpletag( "gaspRange", [ ("rangeMaxPPEM", rangeMaxPPEM), ("rangeGaspBehavior", rangeGaspBehavior), ], ) writer.newline()
[docs] def fromXML(self, name, attrs, content, ttFont): if name != "gaspRange": return if not hasattr(self, "gaspRange"): self.gaspRange = {} self.gaspRange[safeEval(attrs["rangeMaxPPEM"])] = safeEval( attrs["rangeGaspBehavior"] )