61 lines
1.5 KiB
Python
61 lines
1.5 KiB
Python
from . import DefaultTable
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from . import ttProgram
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class table__f_p_g_m(DefaultTable.DefaultTable):
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"""Font Program table
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The ``fpgm`` table typically contains function defintions that are
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used by font instructions. This Font Program is similar to the Control
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Value Program that is stored in the ``prep`` table, but
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the ``fpgm`` table is only executed one time, when the font is first
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used.
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See also https://learn.microsoft.com/en-us/typography/opentype/spec/fpgm
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"""
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def decompile(self, data, ttFont):
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program = ttProgram.Program()
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program.fromBytecode(data)
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self.program = program
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def compile(self, ttFont):
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return self.program.getBytecode()
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def toXML(self, writer, ttFont):
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self.program.toXML(writer, ttFont)
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def fromXML(self, name, attrs, content, ttFont):
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program = ttProgram.Program()
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program.fromXML(name, attrs, content, ttFont)
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self.program = program
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def __bool__(self):
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"""
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>>> fpgm = table__f_p_g_m()
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>>> bool(fpgm)
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False
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>>> p = ttProgram.Program()
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>>> fpgm.program = p
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>>> bool(fpgm)
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False
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>>> bc = bytearray([0])
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>>> p.fromBytecode(bc)
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>>> bool(fpgm)
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True
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>>> p.bytecode.pop()
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0
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>>> bool(fpgm)
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False
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"""
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return hasattr(self, "program") and bool(self.program)
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__nonzero__ = __bool__
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if __name__ == "__main__":
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import sys
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import doctest
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sys.exit(doctest.testmod().failed)
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