Mercurial > fife-parpg

annotate engine/extensions/pychan/tools.py @ 199:4ea1e0b56a07

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fixes based on the updated SDK from barra. These scripts were still trying to use swig 1.3.35 and in the new SDK swig was updated to 1.3.38
author vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
date Fri, 13 Mar 2009 01:58:04 +0000
parents 31718fa356f8
children 54bfd1015b35
rev   line source
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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1 # coding: utf-8
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2
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3 import exceptions
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4
0
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5 ### Functools ###
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6
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7 def applyOnlySuitable(func,**kwargs):
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8 """
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9 This nifty little function takes another function and applies it to a dictionary of
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10 keyword arguments. If the supplied function does not expect one or more of the
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11 keyword arguments, these are silently discarded. The result of the application is returned.
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12 This is useful to pass information to callbacks without enforcing a particular signature.
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13 """
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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14 if hasattr(func,'im_func'):
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15 code = func.im_func.func_code
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16 varnames = code.co_varnames[1:code.co_argcount]#ditch bound instance
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17 else:
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18 code = func.func_code
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19 varnames = code.co_varnames[0:code.co_argcount]
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20
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21 #http://docs.python.org/lib/inspect-types.html
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22 if code.co_flags & 8:
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23 return func(**kwargs)
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24 for name,value in kwargs.items():
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25 if name not in varnames:
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26 del kwargs[name]
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27 return func(**kwargs)
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28
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29 def callbackWithArguments(callback,*args,**kwargs):
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30 """
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31 Curries a function with extra arguments to
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32 create a suitable callback.
129
9a1529f9625e * Indentation patch by GreyGhost
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33
0
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34 If you don't know what this means, don't worry.
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35 It is designed for the case where you need
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36 different buttons to execute basically the same code
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37 with different argumnets.
129
9a1529f9625e * Indentation patch by GreyGhost
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38
0
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39 Usage::
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40 # The target callback
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41 def printStuff(text):
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42 print text
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43 # Mapping the events
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44 gui.mapEvents({
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45 'buttonHello' : callbackWithArguments(printStuff,"Hello"),
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46 'buttonBye' : callbackWithArguments(printStuff,"Adieu")
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47 })
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48 """
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49 def real_callback():
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50 callback(*args,**kwargs)
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51 return real_callback
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52
163
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53 def attrSetCallback(**kwargs):
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54 """
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55 Generates an event callback that sets attributes on the widget
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56 it is called on. This is especially useful for mouseEntered/Exited
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57 events - to create hover effects.
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58
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59 It takes a set of keyword arguments. The keys are treated as attribute names,
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60 which are then set to the corresponding value when the callback is called.
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61 Some key names are treated special - see below.
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62
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63 Usage - Example adapted from demo application::
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64 eventMap = {
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65 'creditsLink' : showCreditsCallback,
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66 'creditsLink/mouseEntered' : attrSetCallback(
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67 text = "Show credits!",
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68 background_color = (255,255,0,255),
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69 do__adaptLayout=True),
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70 'creditsLink/mouseExited' : attrSetCallback(text = "Credits"),
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71 gui.mapEvents(eventMap)
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72
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73 Now when the mouse enters the creditsLink (a Label in our case), the following code will be executed::
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74 #widget is the creditsLink - given to the event callback.
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75 widget.text = "Show credits!"
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76 widget.background_color = (255,255,0,255)
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77 widget.adaptLayout()
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78
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79 The C{do__adaptLayout} argument causes the method C{adaptLayout} to be called.
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80 In fact any key starting with C{do__} results in such a method call. The order
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81 of execution of such calls is undefined.
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82
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83 Keys starting with an underscore raise a L{execptions.PrivateFunctionalityError}.
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84 """
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85 do_calls = []
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86
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87 for name in kwargs.keys():
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88 if name.startswith("_"):
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89 raise exceptions.PrivateFunctionalityError(name)
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90 if name.startswith("do__"):
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91 do_calls.append(name[4:])
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92 del kwargs[name]
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93
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94 def callback(widget=None):
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95 for name,value in kwargs.items():
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96 setattr(widget,name,value)
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97 for method_name in do_calls:
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98 method = getattr(widget,method_name)
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99 method()
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100 return callback
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101
0
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102 def this_is_deprecated(func,message=None):
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103 if message is None:
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104 message = repr(func)
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105 def wrapped_func(*args,**kwargs):
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106 print "PyChan: You are using the DEPRECATED functionality: %s" % message
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107 return func(*args,**kwargs)
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108 return wrapped_func