62 lines
1.9 KiB
Python
62 lines
1.9 KiB
Python
from io import BytesIO
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from fontTools import cffLib
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from . import DefaultTable
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class table_C_F_F_(DefaultTable.DefaultTable):
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"""Compact Font Format table (version 1)
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The ``CFF`` table embeds a CFF-formatted font. The CFF font format
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predates OpenType and could be used as a standalone font file, but the
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``CFF`` table is also used to package CFF fonts into an OpenType
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container.
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.. note::
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``CFF`` has been succeeded by ``CFF2``, which eliminates much of
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the redundancy incurred by embedding CFF version 1 in an OpenType
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font.
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See also https://learn.microsoft.com/en-us/typography/opentype/spec/cff
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"""
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def __init__(self, tag=None):
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DefaultTable.DefaultTable.__init__(self, tag)
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self.cff = cffLib.CFFFontSet()
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self._gaveGlyphOrder = False
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def decompile(self, data, otFont):
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self.cff.decompile(BytesIO(data), otFont, isCFF2=False)
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assert len(self.cff) == 1, "can't deal with multi-font CFF tables."
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def compile(self, otFont):
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f = BytesIO()
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self.cff.compile(f, otFont, isCFF2=False)
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return f.getvalue()
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def haveGlyphNames(self):
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if hasattr(self.cff[self.cff.fontNames[0]], "ROS"):
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return False # CID-keyed font
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else:
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return True
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def getGlyphOrder(self):
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if self._gaveGlyphOrder:
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from fontTools import ttLib
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raise ttLib.TTLibError("illegal use of getGlyphOrder()")
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self._gaveGlyphOrder = True
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return self.cff[self.cff.fontNames[0]].getGlyphOrder()
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def setGlyphOrder(self, glyphOrder):
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pass
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# XXX
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# self.cff[self.cff.fontNames[0]].setGlyphOrder(glyphOrder)
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def toXML(self, writer, otFont):
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self.cff.toXML(writer)
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def fromXML(self, name, attrs, content, otFont):
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if not hasattr(self, "cff"):
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self.cff = cffLib.CFFFontSet()
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self.cff.fromXML(name, attrs, content, otFont)
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