From d014d49c88d4fa31c46afb2c252e481177b30a55 Mon Sep 17 00:00:00 2001
From: Daniil Ivanov <divanov@iv1.research.nokia.com>
Date: Thu, 26 Nov 2009 14:44:09 +0100
Subject: Fixes performance problem with scribble avoiding to redraw whole
 screen on every MotionNotify event.

Merge-request: 2210
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@nokia.com>
---
 examples/widgets/scribble/scribblearea.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/examples/widgets/scribble/scribblearea.cpp b/examples/widgets/scribble/scribblearea.cpp
index 6c9d8aa..2bc2a69 100644
--- a/examples/widgets/scribble/scribblearea.cpp
+++ b/examples/widgets/scribble/scribblearea.cpp
@@ -139,11 +139,12 @@ void ScribbleArea::mouseReleaseEvent(QMouseEvent *event)
 }
 
 //! [12] //! [13]
-void ScribbleArea::paintEvent(QPaintEvent * /* event */)
+void ScribbleArea::paintEvent(QPaintEvent *event)
 //! [13] //! [14]
 {
     QPainter painter(this);
-    painter.drawImage(QPoint(0, 0), image);
+    QRect dirtyRect = event->rect();
+    painter.drawImage(dirtyRect, image, dirtyRect);
 }
 //! [14]
 
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