From ac40c458facfa4f641c1cf2a2384d955431cdb7c Mon Sep 17 00:00:00 2001
From: Tomaz Canabrava <tomaz.canabrava@intel.com>
Date: Fri, 16 Jan 2015 16:45:13 -0200
Subject: Reduce the refresh rate of the toolTipItem to 25fps.

This reduces a lot of CPU time and makes the overall use of the tooltip a
breeze.

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
---
 qt-ui/profile/divetooltipitem.cpp | 5 +++++
 qt-ui/profile/divetooltipitem.h   | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/qt-ui/profile/divetooltipitem.cpp b/qt-ui/profile/divetooltipitem.cpp
index 821c4a695..e89feff9c 100644
--- a/qt-ui/profile/divetooltipitem.cpp
+++ b/qt-ui/profile/divetooltipitem.cpp
@@ -159,6 +159,7 @@ ToolTipItem::ToolTipItem(QGraphicsItem *parent) : QGraphicsRectItem(parent),
 	title->setBrush(Qt::white);
 
 	setPen(QPen(Qt::white, 2));
+	refreshTime.start();
 }
 
 ToolTipItem::~ToolTipItem()
@@ -240,6 +241,10 @@ void ToolTipItem::refresh(const QPointF &pos)
 	static QPainter painter(&tissues);
 	static struct membuffer mb = { 0 };
 
+	if(refreshTime.elapsed() < 40)
+		return;
+	refreshTime.start();
+
 	int time = timeAxis->valueAt(pos);
 	if (time == lastTime)
 		return;
diff --git a/qt-ui/profile/divetooltipitem.h b/qt-ui/profile/divetooltipitem.h
index 6235ec8d9..4fa7ec2d7 100644
--- a/qt-ui/profile/divetooltipitem.h
+++ b/qt-ui/profile/divetooltipitem.h
@@ -6,6 +6,7 @@
 #include <QPair>
 #include <QRectF>
 #include <QIcon>
+#include <QTime>
 #include "display.h"
 
 class DiveCartesianAxis;
@@ -59,7 +60,7 @@ private:
 	DiveCartesianAxis *timeAxis;
 	plot_info pInfo;
 	int lastTime;
-
+	QTime refreshTime;
 	QList<QGraphicsItem*> oldSelection;
 };
 
-- 
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