Source code for fontTools.ttLib.tables.G__l_o_c

from fontTools.misc import sstruct
from fontTools.misc.textTools import safeEval
from . import DefaultTable
import array
import sys


Gloc_header = """
    >        # big endian
    version: 16.16F    # Table version
    flags:        H    # bit 0: 1=long format, 0=short format
                       # bit 1: 1=attribute names, 0=no names
    numAttribs:   H    # NUmber of attributes
"""


[docs] class table_G__l_o_c(DefaultTable.DefaultTable): """ Support Graphite Gloc tables """ dependencies = ["Glat"] def __init__(self, tag=None): DefaultTable.DefaultTable.__init__(self, tag) self.attribIds = None self.numAttribs = 0
[docs] def decompile(self, data, ttFont): _, data = sstruct.unpack2(Gloc_header, data, self) flags = self.flags del self.flags self.locations = array.array("I" if flags & 1 else "H") self.locations.frombytes(data[: len(data) - self.numAttribs * (flags & 2)]) if sys.byteorder != "big": self.locations.byteswap() self.attribIds = array.array("H") if flags & 2: self.attribIds.frombytes(data[-self.numAttribs * 2 :]) if sys.byteorder != "big": self.attribIds.byteswap()
[docs] def compile(self, ttFont): data = sstruct.pack( Gloc_header, dict( version=1.0, flags=(bool(self.attribIds) << 1) + (self.locations.typecode == "I"), numAttribs=self.numAttribs, ), ) if sys.byteorder != "big": self.locations.byteswap() data += self.locations.tobytes() if sys.byteorder != "big": self.locations.byteswap() if self.attribIds: if sys.byteorder != "big": self.attribIds.byteswap() data += self.attribIds.tobytes() if sys.byteorder != "big": self.attribIds.byteswap() return data
[docs] def set(self, locations): long_format = max(locations) >= 65536 self.locations = array.array("I" if long_format else "H", locations)
[docs] def toXML(self, writer, ttFont): writer.simpletag("attributes", number=self.numAttribs) writer.newline()
[docs] def fromXML(self, name, attrs, content, ttFont): if name == "attributes": self.numAttribs = int(safeEval(attrs["number"]))
def __getitem__(self, index): return self.locations[index] def __len__(self): return len(self.locations) def __iter__(self): return iter(self.locations)