From d38bc2998de07d6062aae2d0e4f6112b37522431 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 27 Jan 2014 10:00:10 +0530
Subject: [PATCH] Fix incorrect paints when paint events generated by mouse
 clicks

---
 src/calibre/gui2/tweak_book/diff/view.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/gui2/tweak_book/diff/view.py b/src/calibre/gui2/tweak_book/diff/view.py
index 5bf9b68066..15b33a9935 100644
--- a/src/calibre/gui2/tweak_book/diff/view.py
+++ b/src/calibre/gui2/tweak_book/diff/view.py
@@ -225,7 +225,7 @@ class TextBrowser(PlainTextEdit):  # {{{
             num += 1
 
     def paintEvent(self, event):
-        w = event.rect().width()
+        w = self.viewport().rect().width()
         painter = QPainter(self.viewport())
         painter.setClipRect(event.rect())
         floor = event.rect().bottom()