mirror of https://github.com/GNOME/gimp.git
93 lines
2.8 KiB
Python
93 lines
2.8 KiB
Python
# Gimp-Python - allows the writing of Gimp plugins in Python.
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# Copyright (C) 1997 James Henstridge <james@daa.com.au>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# gimpshelf.py -- a simple module to help gimp modules written in Python
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# store persistent data.
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#
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# Copyright (C) 1997, James Henstridge
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#
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# The gimp module provides a basic method for storing information that persists
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# for a whole gimp session, but only allows for the storage of strings. This
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# is because other Python types usually have pointers to other Python objects,
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# making it dificult to work out what to save. This module gives an interface
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# to the gimp module's primitive interface, which resembles the shelve module.
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# use cPickle and cStringIO if available
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try:
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import cPickle as pickle
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except ImportError:
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import pickle
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try:
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import cStringIO as StringIO
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except ImportError:
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import StringIO
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import gimp
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import copy_reg
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def _image_id(obj):
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return gimp._id2image, (obj.ID,)
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def _drawable_id(obj):
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return gimp._id2drawable, (obj.ID,)
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def _display_id(obj):
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return gimp._id2display, (obj.ID,)
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def _vectors_id(obj):
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return gimp._id2vectors, int(obj.ID)
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copy_reg.pickle(gimp.Image, _image_id, gimp._id2image)
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copy_reg.pickle(gimp.Layer, _drawable_id, gimp._id2drawable)
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copy_reg.pickle(gimp.Channel, _drawable_id, gimp._id2drawable)
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copy_reg.pickle(gimp.Display, _display_id, gimp._id2display)
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copy_reg.pickle(gimp.Vectors, _vectors_id, gimp._id2vectors)
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del copy_reg, _image_id, _drawable_id, _display_id, _vectors_id
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class Gimpshelf:
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def has_key(self, key):
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try:
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s = gimp.get_data(key)
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return 1
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except gimp.error:
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return 0
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def __getitem__(self, key):
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try:
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s = gimp.get_data(key)
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except gimp.error:
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raise KeyError, key
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f = StringIO.StringIO(s)
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return pickle.Unpickler(f).load()
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def __setitem__(self, key, value):
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f = StringIO.StringIO()
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p = pickle.Pickler(f)
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p.dump(value)
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gimp.set_data(key, f.getvalue())
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def __delitem__(self, key):
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gimp.set_data(key, '')
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shelf = Gimpshelf()
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del Gimpshelf
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