| 1 | n/a | # tk common color chooser dialogue |
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| 2 | n/a | # |
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| 3 | n/a | # this module provides an interface to the native color dialogue |
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| 4 | n/a | # available in Tk 4.2 and newer. |
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| 5 | n/a | # |
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| 6 | n/a | # written by Fredrik Lundh, May 1997 |
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| 7 | n/a | # |
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| 8 | n/a | # fixed initialcolor handling in August 1998 |
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| 9 | n/a | # |
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| 10 | n/a | |
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| 11 | n/a | # |
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| 12 | n/a | # options (all have default values): |
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| 13 | n/a | # |
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| 14 | n/a | # - initialcolor: color to mark as selected when dialog is displayed |
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| 15 | n/a | # (given as an RGB triplet or a Tk color string) |
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| 16 | n/a | # |
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| 17 | n/a | # - parent: which window to place the dialog on top of |
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| 18 | n/a | # |
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| 19 | n/a | # - title: dialog title |
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| 20 | n/a | # |
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| 21 | n/a | |
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| 22 | n/a | from tkinter.commondialog import Dialog |
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| 23 | n/a | |
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| 24 | n/a | |
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| 25 | n/a | # |
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| 26 | n/a | # color chooser class |
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| 27 | n/a | |
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| 28 | n/a | class Chooser(Dialog): |
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| 29 | n/a | "Ask for a color" |
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| 30 | n/a | |
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| 31 | n/a | command = "tk_chooseColor" |
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| 32 | n/a | |
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| 33 | n/a | def _fixoptions(self): |
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| 34 | n/a | try: |
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| 35 | n/a | # make sure initialcolor is a tk color string |
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| 36 | n/a | color = self.options["initialcolor"] |
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| 37 | n/a | if isinstance(color, tuple): |
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| 38 | n/a | # assume an RGB triplet |
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| 39 | n/a | self.options["initialcolor"] = "#%02x%02x%02x" % color |
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| 40 | n/a | except KeyError: |
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| 41 | n/a | pass |
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| 42 | n/a | |
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| 43 | n/a | def _fixresult(self, widget, result): |
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| 44 | n/a | # result can be somethings: an empty tuple, an empty string or |
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| 45 | n/a | # a Tcl_Obj, so this somewhat weird check handles that |
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| 46 | n/a | if not result or not str(result): |
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| 47 | n/a | return None, None # canceled |
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| 48 | n/a | |
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| 49 | n/a | # to simplify application code, the color chooser returns |
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| 50 | n/a | # an RGB tuple together with the Tk color string |
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| 51 | n/a | r, g, b = widget.winfo_rgb(result) |
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| 52 | n/a | return (r/256, g/256, b/256), str(result) |
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| 53 | n/a | |
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| 54 | n/a | |
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| 55 | n/a | # |
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| 56 | n/a | # convenience stuff |
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| 57 | n/a | |
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| 58 | n/a | def askcolor(color = None, **options): |
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| 59 | n/a | "Ask for a color" |
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| 60 | n/a | |
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| 61 | n/a | if color: |
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| 62 | n/a | options = options.copy() |
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| 63 | n/a | options["initialcolor"] = color |
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| 64 | n/a | |
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| 65 | n/a | return Chooser(**options).show() |
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| 66 | n/a | |
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| 67 | n/a | |
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| 68 | n/a | # -------------------------------------------------------------------- |
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| 69 | n/a | # test stuff |
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| 70 | n/a | |
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| 71 | n/a | if __name__ == "__main__": |
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| 72 | n/a | print("color", askcolor()) |
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