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Editing: colorchooser.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 # from tkinter.commondialog import Dialog __all__ = ["Chooser", "askcolor"] class Chooser(Dialog): """Create a dialog for the tk_chooseColor command. Args: master: The master widget for this dialog. If not provided, defaults to options['parent'] (if defined). options: Dictionary of options for the tk_chooseColor call. initialcolor: Specifies the selected color when the dialog is first displayed. This can be a tk color string or a 3-tuple of ints in the range (0, 255) for an RGB triplet. parent: The parent window of the color dialog. The color dialog is displayed on top of this. title: A string for the title of the dialog box. """ command = "tk_chooseColor" def _fixoptions(self): """Ensure initialcolor is a tk color string. Convert initialcolor from a RGB triplet to a color string. """ try: 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): """Adjust result returned from call to tk_chooseColor. Return both an RGB tuple of ints in the range (0, 255) and the tk color string in the form #rrggbb. """ # Result can be many things: an empty tuple, an empty string, or # a _tkinter.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): """Display dialog window for selection of a color. Convenience wrapper for the Chooser class. Displays the color chooser dialog with color as the initial value. """ if color: options = options.copy() options["initialcolor"] = color return Chooser(**options).show() # -------------------------------------------------------------------- # test stuff if __name__ == "__main__": print("color", askcolor())
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