From 30e198cf46a4d8bccb9aeca48c91fcaeec374f9b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20T=C5=AFma?= <tumic@cbox.cz>
Date: Wed, 7 Dec 2016 00:44:32 +0100
Subject: [PATCH] Cache the graph grid

---
 src/griditem.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/griditem.cpp b/src/griditem.cpp
index e0a71c2c..2f2b6591 100644
--- a/src/griditem.cpp
+++ b/src/griditem.cpp
@@ -6,7 +6,9 @@
 
 GridItem::GridItem(QGraphicsItem *parent) : QGraphicsItem(parent)
 {
-
+#ifndef Q_OS_MAC
+	setCacheMode(QGraphicsItem::DeviceCoordinateCache);
+#endif // Q_OS_MAC
 }
 
 void GridItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,