From 1b728c33376b4b334e49f7a6682443bfe408a0ce Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Gr=C3=A4=C3=9Flin?= <kde@martin-graesslin.com>
Date: Mon, 27 Apr 2009 17:36:20 +0000
Subject: [PATCH] Trigger a full repaint when mouse moves in magnifier effect.
 This is a slight overhead but fast mouse movements caused artefacts as some
 change events were lost. BUG: 187658

svn path=/trunk/KDE/kdebase/workspace/; revision=959982
---
 effects/magnifier/magnifier.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/effects/magnifier/magnifier.cpp b/effects/magnifier/magnifier.cpp
index c64737b789..8bd574643d 100644
--- a/effects/magnifier/magnifier.cpp
+++ b/effects/magnifier/magnifier.cpp
@@ -179,7 +179,9 @@ void MagnifierEffect::mouseChanged( const QPoint& pos, const QPoint& old,
     Qt::MouseButtons, Qt::MouseButtons, Qt::KeyboardModifiers, Qt::KeyboardModifiers )
     {
     if( pos != old && zoom != 1 )
-        effects->addRepaint( magnifierArea( old ).adjusted( -FRAME_WIDTH, -FRAME_WIDTH, FRAME_WIDTH, FRAME_WIDTH ));
+        // need full repaint as we might lose some change events on fast mouse movements
+        // see Bug 187658
+        effects->addRepaintFull();
     }
 
 } // namespace