Mercurial > cpython-lru_cache-weakref

annotate Tools/pynche/pyColorChooser.py @ 54294:dba767bc3155 legacy-trunk

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remove mention of old ctypes version
author Benjamin Peterson <benjamin@python.org>
date Sat, 23 May 2009 20:59:09 +0000
parents ed0f0d96750c
children c048a09d06ff
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """Color chooser implementing (almost) the tkColorColor interface
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2 """
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3
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4 import os
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5 import Main
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6 import ColorDB
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7
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8
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9
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10 class Chooser:
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11 """Ask for a color"""
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12 def __init__(self,
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13 master = None,
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14 databasefile = None,
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15 initfile = None,
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16 ignore = None,
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17 wantspec = None):
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18 self.__master = master
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19 self.__databasefile = databasefile
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20 self.__initfile = initfile or os.path.expanduser('~/.pynche')
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21 self.__ignore = ignore
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22 self.__pw = None
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23 self.__wantspec = wantspec
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24
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25 def show(self, color, options):
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26 # scan for options that can override the ctor options
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27 self.__wantspec = options.get('wantspec', self.__wantspec)
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28 dbfile = options.get('databasefile', self.__databasefile)
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29 # load the database file
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30 colordb = None
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31 if dbfile <> self.__databasefile:
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32 colordb = ColorDB.get_colordb(dbfile)
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33 if not self.__master:
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34 from Tkinter import Tk
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35 self.__master = Tk()
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36 if not self.__pw:
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37 self.__pw, self.__sb = \
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38 Main.build(master = self.__master,
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39 initfile = self.__initfile,
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40 ignore = self.__ignore)
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41 else:
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42 self.__pw.deiconify()
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43 # convert color
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44 if colordb:
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45 self.__sb.set_colordb(colordb)
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46 else:
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47 colordb = self.__sb.colordb()
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48 if color:
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49 r, g, b = Main.initial_color(color, colordb)
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50 self.__sb.update_views(r, g, b)
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51 # reset the canceled flag and run it
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52 self.__sb.canceled(0)
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53 Main.run(self.__pw, self.__sb)
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54 rgbtuple = self.__sb.current_rgb()
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55 self.__pw.withdraw()
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56 # check to see if the cancel button was pushed
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57 if self.__sb.canceled_p():
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58 return None, None
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59 # Try to return the color name from the database if there is an exact
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60 # match, otherwise use the "#rrggbb" spec. BAW: Forget about color
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61 # aliases for now, maybe later we should return these too.
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62 name = None
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63 if not self.__wantspec:
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64 try:
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65 name = colordb.find_byrgb(rgbtuple)[0]
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66 except ColorDB.BadColor:
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67 pass
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68 if name is None:
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69 name = ColorDB.triplet_to_rrggbb(rgbtuple)
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70 return rgbtuple, name
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71
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72 def save(self):
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73 if self.__sb:
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74 self.__sb.save_views()
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75
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76
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77 # convenience stuff
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78 _chooser = None
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79
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80 def askcolor(color = None, **options):
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81 """Ask for a color"""
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82 global _chooser
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83 if not _chooser:
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84 _chooser = apply(Chooser, (), options)
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85 return _chooser.show(color, options)
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86
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87 def save():
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88 global _chooser
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89 if _chooser:
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90 _chooser.save()
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91
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92
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93 # test stuff
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94 if __name__ == '__main__':
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95 from Tkinter import *
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96
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97 class Tester:
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98 def __init__(self):
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99 self.__root = tk = Tk()
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100 b = Button(tk, text='Choose Color...', command=self.__choose)
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101 b.pack()
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102 self.__l = Label(tk)
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103 self.__l.pack()
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104 q = Button(tk, text='Quit', command=self.__quit)
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105 q.pack()
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106
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107 def __choose(self, event=None):
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108 rgb, name = askcolor(master=self.__root)
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109 if rgb is None:
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110 text = 'You hit CANCEL!'
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111 else:
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112 r, g, b = rgb
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113 text = 'You picked %s (%3d/%3d/%3d)' % (name, r, g, b)
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114 self.__l.configure(text=text)
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115
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116 def __quit(self, event=None):
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117 self.__root.quit()
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118
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119 def run(self):
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120 self.__root.mainloop()
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121 t = Tester()
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122 t.run()
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123 # simpler
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124 ## print 'color:', askcolor()
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125 ## print 'color:', askcolor()