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$NetBSD: patch-aa,v 1.1.1.1 2010/12/23 11:45:32 ryoon Exp $
http://gna.org/bugs/?17084
--- gui/tileddrawwidget.py.orig 2010-10-30 19:27:59.000000000 +0000
+++ gui/tileddrawwidget.py
@@ -9,6 +9,7 @@
import gtk, gobject, cairo, random
gdk = gtk.gdk
from math import floor, ceil, pi, log
+from numpy import isfinite
from lib import helpers, tiledsurface, pixbufsurface
import cursor
@@ -167,7 +168,10 @@ class TiledDrawWidget(gtk.DrawingArea):
xtilt = event.get_axis(gdk.AXIS_XTILT)
ytilt = event.get_axis(gdk.AXIS_YTILT)
- if xtilt is None or ytilt is None:
+ # Check whether tilt is present. For some tablets without
+ # tilt support GTK reports a tilt axis with value nan, instead
+ # of None. https://gna.org/bugs/?17084
+ if xtilt is None or ytilt is None or not isfinite(xtilt+ytilt):
xtilt = 0.0
ytilt = 0.0
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