From e2b94040e6438af537bf49f73194b06072d9b518 Mon Sep 17 00:00:00 2001
From: Marco Martin <notmart@gmail.com>
Date: Fri, 7 Sep 2012 22:27:58 +0200
Subject: [PATCH] intersect the clip rect when painting

---
 widgets/signalplotter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/widgets/signalplotter.cpp b/widgets/signalplotter.cpp
index a5646062a..8e9e2941d 100644
--- a/widgets/signalplotter.cpp
+++ b/widgets/signalplotter.cpp
@@ -682,7 +682,7 @@ void SignalPlotter::drawWidget(QPainter *p, uint w, uint height, int horizontalS
         drawTopBarContents(p, separatorX, topBarWidth, top -1);
     }
 
-    p->setClipRect(0, top, w, h);
+    p->setClipRect(0, top, w, h, Qt::IntersectClip);
     // Draw scope-like grid vertical lines
     if (d->verticalLinesScroll && d->showVerticalLines && w > 60) {
         drawVerticalLines(p, top, w, h);