From 5c5310803f34c8fcf3aee6b7bb5c2bc6caf3107c Mon Sep 17 00:00:00 2001
From: Frans Englich <frans.englich@nokia.com>
Date: Tue, 11 Aug 2009 15:37:22 +0200
Subject: Prevent unnecessary repaints when moving with zero distance in
 moveRect().

This path is triggered from the layout system on S60. Reported by
Nokia/Dallas' multimedia team. We haven't yet figured out a way to
trigger this through auto test.

Reviewed-by: Paul
---
 src/gui/painting/qbackingstore.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gui/painting/qbackingstore.cpp b/src/gui/painting/qbackingstore.cpp
index 40c9bf2..0b34c56 100644
--- a/src/gui/painting/qbackingstore.cpp
+++ b/src/gui/painting/qbackingstore.cpp
@@ -847,7 +847,7 @@ QWidgetBackingStore::~QWidgetBackingStore()
 void QWidgetPrivate::moveRect(const QRect &rect, int dx, int dy)
 {
     Q_Q(QWidget);
-    if (!q->isVisible())
+    if (!q->isVisible() || (dx == 0 && dy == 0))
         return;
 
     QWidget *tlw = q->window();
-- 
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