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