New dialog routines (Fred Lundh)

Lib/tkinter/tkColorChooser.py

@@ -0,0 +1,72 @@
+#
+# 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()