#
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# The Python Imaging Library
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# $Id$
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#
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# FITS stub adapter
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#
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# Copyright (c) 1998-2003 by Fredrik Lundh
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#
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# See the README file for information on usage and redistribution.
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#
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from . import FitsImagePlugin, Image, ImageFile
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from ._deprecate import deprecate
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_handler = None
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def register_handler(handler):
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"""
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Install application-specific FITS image handler.
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:param handler: Handler object.
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"""
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global _handler
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_handler = handler
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deprecate(
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"FitsStubImagePlugin",
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10,
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action="FITS images can now be read without "
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"a handler through FitsImagePlugin instead",
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)
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# Override FitsImagePlugin with this handler
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# for backwards compatibility
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try:
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Image.ID.remove(FITSStubImageFile.format)
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except ValueError:
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pass
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Image.register_open(
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FITSStubImageFile.format, FITSStubImageFile, FitsImagePlugin._accept
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)
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class FITSStubImageFile(ImageFile.StubImageFile):
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format = FitsImagePlugin.FitsImageFile.format
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format_description = FitsImagePlugin.FitsImageFile.format_description
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def _open(self):
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offset = self.fp.tell()
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im = FitsImagePlugin.FitsImageFile(self.fp)
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self._size = im.size
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self.mode = im.mode
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self.tile = []
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self.fp.seek(offset)
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loader = self._load()
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if loader:
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loader.open(self)
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def _load(self):
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return _handler
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def _save(im, fp, filename):
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msg = "FITS save handler not installed"
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raise OSError(msg)
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# --------------------------------------------------------------------
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# Registry
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Image.register_save(FITSStubImageFile.format, _save)
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