1 from __future__ import print_function, division, absolute_import 2 from fontTools.misc.py23 import * 3 from . import DefaultTable 4 import sys 5 import array 6 import warnings 7 8 class table__l_o_c_a(DefaultTable.DefaultTable): 9 10 dependencies = ['glyf'] 11 12 def decompile(self, data, ttFont): 13 longFormat = ttFont['head'].indexToLocFormat 14 if longFormat: 15 format = "I" 16 else: 17 format = "H" 18 locations = array.array(format) 19 locations.fromstring(data) 20 if sys.byteorder != "big": 21 locations.byteswap() 22 if not longFormat: 23 l = array.array("I") 24 for i in range(len(locations)): 25 l.append(locations[i] * 2) 26 locations = l 27 if len(locations) < (ttFont['maxp'].numGlyphs + 1): 28 warnings.warn("corrupt 'loca' table, or wrong numGlyphs in 'maxp': %d %d" % (len(locations) - 1, ttFont['maxp'].numGlyphs)) 29 self.locations = locations 30 31 def compile(self, ttFont): 32 try: 33 max_location = max(self.locations) 34 except AttributeError: 35 self.set([]) 36 max_location = 0 37 if max_location < 0x20000: 38 locations = array.array("H") 39 for i in range(len(self.locations)): 40 locations.append(self.locations[i] // 2) 41 ttFont['head'].indexToLocFormat = 0 42 else: 43 locations = array.array("I", self.locations) 44 ttFont['head'].indexToLocFormat = 1 45 if sys.byteorder != "big": 46 locations.byteswap() 47 return locations.tostring() 48 49 def set(self, locations): 50 self.locations = array.array("I", locations) 51 52 def toXML(self, writer, ttFont): 53 writer.comment("The 'loca' table will be calculated by the compiler") 54 writer.newline() 55 56 def __getitem__(self, index): 57 return self.locations[index] 58 59 def __len__(self): 60 return len(self.locations) 61 62
