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