59 lines
1.5 KiB
Python
59 lines
1.5 KiB
Python
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from __future__ import print_function, division, absolute_import
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from fontTools.misc.py23 import *
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from fontTools.ttLib.sfnt import readTTCHeader
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import logging
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log = logging.getLogger(__name__)
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class TTCollection(object):
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"""Object representing a TrueType Collection / OpenType Collection.
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The main API is self.fonts being a list of TTFont instances.
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If shareTables is True, then different fonts in the collection
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might point to the same table object if the data for the table was
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the same in the font file. Note, however, that this might result
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in suprises and incorrect behavior if the different fonts involved
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have different GlyphOrder. Use only if you know what you are doing.
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"""
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def __init__(self, file=None, shareTables=False, **kwargs):
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fonts = self.fonts = []
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if file is None:
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return
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assert 'fontNumber' not in kwargs, kwargs
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if not hasattr(file, "read"):
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file = open(file, "rb")
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tableCache = {} if shareTables else None
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file.seek(0)
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sfntVersion = file.read(4)
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file.seek(0)
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if sfntVersion != b"ttcf":
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raise TTLibError("Not a Font Collection")
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from fontTools.ttLib import TTFont
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header = readTTCHeader(file)
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for i in range(header.numFonts):
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font = TTFont(file, fontNumber=i, _tableCache=tableCache, **kwargs)
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fonts.append(font)
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def __getitem__(self, item):
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return self.fonts[item]
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def __setitem__(self, item, value):
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self.fonts[item] = values
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def __delitem__(self, item):
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return self.fonts[item]
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def __len__(self):
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return len(self.fonts)
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def __iter__(self):
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return iter(self.fonts)
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