From 44d5985d8205627d4342606bbfca1062db2b82cc Mon Sep 17 00:00:00 2001
From: Ian Ward <ian@excess.org>
Date: Thu, 26 Dec 2013 14:35:25 -0500
Subject: fix Padding invalidation on width/align change

---
 urwid/decoration.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/urwid/decoration.py b/urwid/decoration.py
index 190c402..b6a5ea9 100755
--- a/urwid/decoration.py
+++ b/urwid/decoration.py
@@ -537,6 +537,7 @@ class Padding(WidgetDecoration):
         """
         self._align_type, self._align_amount = normalize_align(align,
             PaddingError)
+        self._invalidate()
     align = property(_get_align, _set_align)
 
     def _get_width(self):
@@ -550,6 +551,7 @@ class Padding(WidgetDecoration):
         """
         self._width_type, self._width_amount = normalize_width(width,
             PaddingError)
+        self._invalidate()
     width = property(_get_width, _set_width)
 
     def render(self, size, focus=False):
-- 
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