From 73b8d60b8d895b23b79fe5de4cf1fc93a14c1330 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter@sugarlabs.org>
Date: Fri, 10 May 2013 00:35:39 +0000
Subject: catch situation where overflow is < 0

---
diff --git a/TurtleArtActivity.py b/TurtleArtActivity.py
index 09d4d52..976d79a 100644
--- a/TurtleArtActivity.py
+++ b/TurtleArtActivity.py
@@ -815,6 +815,8 @@ class TurtleArtActivity(activity.Activity):
             if len(palette_names) > max_palettes:
                 max_palettes -= 1  # Make room for the palette button
             overflow = len(palette_names) - max_palettes
+            if overflow < 0:
+                overflow = 1  # Force overflow to be positive
             if gtk.gdk.screen_width() - style.GRID_CELL_SIZE < \
                     int(overflow * (style.GRID_CELL_SIZE + 2)):
                 width = gtk.gdk.screen_width() - style.GRID_CELL_SIZE
--
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