| # tk common colour 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: colour 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() |
