74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
from __future__ import print_function, division, absolute_import
|
|
from fontTools.misc.py23 import *
|
|
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
|
|
'''
|
|
|
|
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
|
|
|
|
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.fromstring(data[:len(data) - self.numAttribs * (flags & 2)])
|
|
if sys.byteorder != "big": self.locations.byteswap()
|
|
self.attribIds = array.array('H')
|
|
if flags & 2:
|
|
self.attribIds.fromstring(data[-self.numAttribs * 2:])
|
|
if sys.byteorder != "big": self.attribIds.byteswap()
|
|
|
|
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.tostring()
|
|
if sys.byteorder != "big": self.locations.byteswap()
|
|
if self.attribIds:
|
|
if sys.byteorder != "big": self.attribIds.byteswap()
|
|
data += self.attribIds.tostring()
|
|
if sys.byteorder != "big": self.attribIds.byteswap()
|
|
return data
|
|
|
|
def set(self, locations):
|
|
long_format = max(locations) >= 65536
|
|
self.locations = array.array('I' if long_format else 'H', locations)
|
|
|
|
def toXML(self, writer, ttFont):
|
|
writer.simpletag("attributes", number=self.numAttribs)
|
|
writer.newline()
|
|
|
|
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)
|