diff engine/python/fife/extensions/pythonize.py @ 378:64738befdf3b

bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
author vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 11 Jan 2010 23:34:52 +0000
parents
children 4f36c890b1dd
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/engine/python/fife/extensions/pythonize.py	Mon Jan 11 23:34:52 2010 +0000
@@ -0,0 +1,111 @@
+# -*- coding: utf-8 -*-
+
+# ####################################################################
+#  Copyright (C) 2005-2009 by the FIFE team
+#  http://www.fifengine.de
+#  This file is part of FIFE.
+#
+#  FIFE is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU Lesser General Public
+#  License as published by the Free Software Foundation; either
+#  version 2.1 of the License, or (at your option) any later version.
+#
+#  This library 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
+#  Lesser General Public License for more details.
+#
+#  You should have received a copy of the GNU Lesser General Public
+#  License along with this library; if not, write to the
+#  Free Software Foundation, Inc.,
+#  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+# ####################################################################
+
+"""\
+Pythonize FIFE
+
+Import this extension to get a more
+pythonic interface to FIFE.
+
+Currently it implements the following
+conveniences:
+
+* FIFE Exceptions print their message.
+* Automatic property generation for:
+  * fife.Engine
+  * fife.Instance
+  * fife.Image
+  * fife.Animation
+  * fife.Point
+  * fife.Rect
+
+"""
+
+from fife import fife
+import re
+
+__all__ = ()
+
+fife.Exception.__str__ = fife.Exception.getMessage
+def _Color2Str(c):
+	return 'Color(%s)' % ','.join(map(str,(c.r,c.g,c.b,c.a)))
+fife.Color.__str__ = _Color2Str
+
+classes = [ fife.Engine, fife.Instance, fife.Point, fife.Rect, fife.Image, fife.Animation,
+ fife.RenderBackend, fife.Event, fife.Command, fife.Container ]
+
+def createProperties():
+	""" Autocreate properties for getXYZ/setXYZ functions.
+	"""
+	try:
+		import inspect
+		getargspec = inspect.getargspec
+	except ImportError:
+		print "Pythonize: inspect not available - properties are generated with dummy argspec."
+		getargspec = lambda func : ([],'args',None,None)
+
+	def isSimpleGetter(func):
+		if not callable(func):
+			return False
+		try:
+			argspec = getargspec(func)
+			return not (argspec[0] or [s for s in argspec[2:] if s])
+		except TypeError, e:
+			#print func, e
+			return False
+
+	def createNames(name):
+		for prefix in ('get', 'is', 'are'):
+			if name.startswith(prefix):
+				new_name = name[len(prefix):]
+				break
+		settername   = 'set' + new_name
+		propertyname = new_name[0].lower() + new_name[1:]
+		return settername, propertyname
+
+	getter = re.compile(r"^(get|are|is)[A-Z]")
+	for class_ in classes:
+		methods = [(name,attr) for name,attr in class_.__dict__.items()
+		                       if isSimpleGetter(attr) ]
+		setmethods = [(name,attr) for name,attr in class_.__dict__.items() if callable(attr)]
+		getters = []
+		for name,method in methods:
+			if getter.match(name):
+				getters.append((name,method))
+				settername, propertyname = createNames(name)
+				setter = dict(setmethods).get(settername,None)
+				#print name, settername, "--->",propertyname,'(',method,',',setter,')'
+				setattr(class_,propertyname,property(method,setter))
+		if not getters: continue
+
+		# We need to override the swig setattr function
+		# to get properties to work.
+		class_._property_names = set([name for name,method in getters])
+		def _setattr_wrapper_(self,*args):
+			if name in class_._property_names:
+				object.__setattr__(self,*args)
+			else:
+				class_.__setattr__(self,*args)
+		class_.__setattr__ = _setattr_wrapper_
+
+createProperties()