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+#
+# Instant Python
+# $Id$
+#
+# 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
+#
+
+#
+# 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
+#
+
+# FIXME: as of Tk 8.0a2, the Unix colour picker is really ugly, and
+# doesn't seem to work properly on a true colour display. maybe we
+# should use the instant python version instead?
+
+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 type(color) == type(()):
+ # assume an RGB triplet
+ self.options["initialcolor"] = "%02x%02x%02x" % color
+ except KeyError:
+ pass
+
+ def _fixresult(self, widget, result):
+ # to simplify application code, the color chooser returns
+ # an RGB tuple together with the Tk color string
+ if not result:
+ return None, None # cancelled
+ r, g, b = widget.winfo_rgb(result)
+ return (r/256, g/256, b/256), result
+
+
+#
+# convenience stuff
+
+def askcolor(color = None, **options):
+ "Ask for a color"
+
+ return apply(Chooser, (), options).show()
+
+
+# --------------------------------------------------------------------
+# test stuff
+
+if __name__ == "__main__":
+
+ print "color", askcolor()