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annotate engine/extensions/pychan/properties.py @ 336:16112ef84609

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PyChan fixes: * Previous commits removed the ability to map events to unnamed widgets. Fixed.
author phoku@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 24 Aug 2009 15:34:23 +0000
parents 162662bf5c8a
children dfd48d49c044
rev   line source
331
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1 #!/usr/bin/env python
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2 # -*- coding: utf-8 -*-
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3
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4 # ####################################################################
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5 # Copyright (C) 2005-2009 by the FIFE team
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6 # http://www.fifengine.de
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7 # This file is part of FIFE.
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8 #
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9 # FIFE is free software; you can redistribute it and/or
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10 # modify it under the terms of the GNU Lesser General Public
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11 # License as published by the Free Software Foundation; either
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12 # version 2.1 of the License, or (at your option) any later version.
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13 #
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14 # This library is distributed in the hope that it will be useful,
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15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 # Lesser General Public License for more details.
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18 #
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19 # You should have received a copy of the GNU Lesser General Public
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20 # License along with this library; if not, write to the
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21 # Free Software Foundation, Inc.,
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22 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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23 # ####################################################################
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24
235
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25 import fife
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26 from exceptions import RuntimeError
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27
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28 def get_manager():
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29 import pychan
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30 return pychan.manager
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31
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32 """
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33 Property bindings
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34 =================
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35
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36 This module contains a set of property bindings for
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37 the widgets, factored out to de-clutter the Widget.
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38
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39 """
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40 class WrappedProperty(object):
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41 def __init__(self, name):
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42 self.name = name
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43 def _getSetter(self,obj):
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44 setter_name = 'set' + self.name
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45 return getattr(obj.real_widget,setter_name)
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46 def _getGetter(self,obj):
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47 getter_name = 'get' + self.name
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48 return getattr(obj.real_widget,getter_name)
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49
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50
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51 class ColorProperty(WrappedProperty):
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52 """
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53 A color property. Fakes a color attribute of a guichan widget.
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54 This accepts either tuples of the colors (r,g,b)
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55 or L{fife.Color} objects.
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56
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57 Color objects have value semantics in this case.
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58 """
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59 def __init__(self, name):
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60 super(ColorProperty, self).__init__(name)
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61 def __set__(self, obj, color):
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62 if isinstance(color, tuple):
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63 color = fife.Color(*color)
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64 else:
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65 # Force a copy to get value semantics
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66 color = fife.Color(color.r,color.g,color.b,color.a)
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67 self._getSetter(obj)(color)
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68 def __get__(self, obj, objtype = None):
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69 color = self._getGetter(obj)()
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70 return fife.Color(color.r,color.g,color.b,color.a)
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71
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72 class ImageProperty(WrappedProperty):
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73 """
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74 This unifies the way Images and Image attributes are handled
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75 inside PyChan.
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76 """
332
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77 def __init__(self, name):
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78 super(ImageProperty, self).__init__(name)
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79 self.prop_name = "_prop_" + self.name.lower()
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80 def __set__(self, obj, image):
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81 image_info = getattr(obj, self.prop_name, {})
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82 if not image:
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83 image_info["source"] = ""
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84 image_info["image"] = fife.GuiImage()
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85 image_info["image"]._source = ""
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86 self._getSetter(obj)(None)
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87
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88 elif isinstance(image, str):
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89 image_info["source"] = image
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90 # to catch or not to catch ...
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91 # we just let the NotFound exception trickle here.
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92 # depedning on complains we can catch and print a warning.
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93 image_info["image"] = get_manager().loadImage(image)
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94 image_info["image"].source = image
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95 self._getSetter(obj)(image_info["image"])
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96
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97 elif isinstance(image,fife.GuiImage):
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98 # FIXME - this trickery with the hidden annotation
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99 # with an _source attribute isn't really clean.
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100 # Is it even necessary
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101 image_info["source"] = getattr(image,"source","")
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102 image_info["image"] = image
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103 if image_info["source"]:
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104 image_info["image"] = get_manager().loadImage(image_info["source"])
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105 self._getSetter(obj)(image_info["image"])
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106 else:
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107 attribute_name = "%s.%s" % (obj.__class__.__name__,self.name)
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108 error_message = "%s only accepts GuiImage and python strings, not '%s'"
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109 raise RuntimeError(error_message % (attribute_name, repr(image)))
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110
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diff changeset
111 setattr(obj, self.prop_name, image_info)
457e626296ba Working on the XXX_image attributes to force consistent
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 331
diff changeset
112
457e626296ba Working on the XXX_image attributes to force consistent
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 331
diff changeset
113 def __get__(self, obj, objtype = None):
333
fee958103d58 * GuiImage now acts as Dummy Image if created without an argument.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 332
diff changeset
114 d = getattr(obj, self.prop_name, {})
fee958103d58 * GuiImage now acts as Dummy Image if created without an argument.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 332
diff changeset
115 image = d.get("image",None)
fee958103d58 * GuiImage now acts as Dummy Image if created without an argument.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 332
diff changeset
116 if not image:
fee958103d58 * GuiImage now acts as Dummy Image if created without an argument.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 332
diff changeset
117 image = fife.GuiImage()
334
a9482d3d989e PyChan fixes:
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 333
diff changeset
118 image.source = ""
333
fee958103d58 * GuiImage now acts as Dummy Image if created without an argument.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 332
diff changeset
119 return image
332
457e626296ba Working on the XXX_image attributes to force consistent
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 331
diff changeset
120