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73 lines
1.7 KiB
Python
73 lines
1.7 KiB
Python
# tk common color chooser dialogue
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#
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# this module provides an interface to the native color dialogue
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# available in Tk 4.2 and newer.
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#
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# written by Fredrik Lundh, May 1997
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#
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# fixed initialcolor handling in August 1998
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#
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#
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# options (all have default values):
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#
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# - initialcolor: color to mark as selected when dialog is displayed
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# (given as an RGB triplet or a Tk color string)
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#
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# - parent: which window to place the dialog on top of
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#
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# - title: dialog title
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#
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from tkinter.commondialog import Dialog
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#
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# color chooser class
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class Chooser(Dialog):
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"Ask for a color"
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command = "tk_chooseColor"
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def _fixoptions(self):
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try:
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# make sure initialcolor is a tk color string
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color = self.options["initialcolor"]
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if isinstance(color, tuple):
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# assume an RGB triplet
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self.options["initialcolor"] = "#%02x%02x%02x" % color
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except KeyError:
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pass
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def _fixresult(self, widget, result):
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# result can be somethings: an empty tuple, an empty string or
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# a Tcl_Obj, so this somewhat weird check handles that
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if not result or not str(result):
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return None, None # canceled
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# to simplify application code, the color chooser returns
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# an RGB tuple together with the Tk color string
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r, g, b = widget.winfo_rgb(result)
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return (r/256, g/256, b/256), str(result)
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#
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# convenience stuff
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def askcolor(color = None, **options):
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"Ask for a color"
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if color:
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options = options.copy()
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options["initialcolor"] = color
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return Chooser(**options).show()
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# --------------------------------------------------------------------
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# test stuff
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if __name__ == "__main__":
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print("color", askcolor())
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