From 30159238e235c2a889fa37cc80b4d9648c8ba760 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter.bender@gmail.com>
Date: Thu, 09 Jun 2011 21:48:22 +0000
Subject: adding CC coordinate grid for XO hardware

---
(limited to 'TurtleArt/tawindow.py')

diff --git a/TurtleArt/tawindow.py b/TurtleArt/tawindow.py
index 5aff270..64a32fd 100644
--- a/TurtleArt/tawindow.py
+++ b/TurtleArt/tawindow.py
@@ -185,6 +185,7 @@ class TurtleArtWindow():
         self.media_shapes = {}
         self.cartesian = False
         self.polar = False
+        self.metric = False
         self.overlay_shapes = {}
         self.toolbar_shapes = {}
         self.toolbar_offset = 0
@@ -485,6 +486,15 @@ class TurtleArtWindow():
             self.overlay_shapes['polar'].hide()
             self.polar = False
 
+    def set_metric(self, flag):
+        """ Turn on/off metric coordinates """
+        if flag:
+            self.overlay_shapes['metric'].set_layer(OVERLAY_LAYER)
+            self.metric = True
+        else:
+            self.overlay_shapes['metric'].hide()
+            self.metric = False
+
     def update_overlay_position(self, widget, event):
         """ Reposition the overlays when window size changes """
         self.width = event.width
@@ -507,6 +517,7 @@ class TurtleArtWindow():
             self.overlay_shapes[name].type = 'overlay'
         self.cartesian = False
         self.polar = False
+        self.metric = False
         self.canvas.width = self.width
         self.canvas.height = self.height
         self.canvas.move_turtle()
--
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