1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
Lib/lib-tk/tkColorChooser.py
# tk common color chooser dialogue
#
# this module provides an interface to the native color dialogue
# available in Tk 4.2 and newer.
#
# written by Fredrik Lundh, May 1997
#
# fixed initialcolor handling in August 1998
#

#
# options (all have default values):
#
# - initialcolor: color to mark as selected when dialog is displayed
#   (given as an RGB triplet or a Tk color string)
#
# - parent: which window to place the dialog on top of
#
# - title: dialog title
#

from tkCommonDialog import Dialog


#
# color chooser class

class Chooser(Dialog):
    "Ask for a color"

    command = "tk_chooseColor"

    def _fixoptions(self):
        try:
            # make sure initialcolor is a tk color string
            color = self.options["initialcolor"]
            if isinstance(color, tuple):
                # assume an RGB triplet
                self.options["initialcolor"] = "#%02x%02x%02x" % color
        except KeyError:
            pass

    def _fixresult(self, widget, result):
        # result can be somethings: an empty tuple, an empty string or
        # a Tcl_Obj, so this somewhat weird check handles that
        if not result or not str(result):
            return None, None # canceled

        # to simplify application code, the color chooser returns
        # an RGB tuple together with the Tk color string
        r, g, b = widget.winfo_rgb(result)
        return (r/256, g/256, b/256), str(result)


#
# convenience stuff

def askcolor(color = None, **options):
    "Ask for a color"

    if color:
        options = options.copy()
        options["initialcolor"] = color

    return Chooser(**options).show()


# --------------------------------------------------------------------
# test stuff

if __name__ == "__main__":
    print "color", askcolor()