From 85338d4b701bad27f45138c6d259c4bf54b18742 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gr=C3=A9gory=20Soutad=C3=A9?= <gsoutade@neotion.com>
Date: Sun, 29 Oct 2017 18:21:54 +0100
Subject: [PATCH] Avoid graphic flickering when changing parameters in
 StatsPanel

---
 src/view/StatsPanel.cpp | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/src/view/StatsPanel.cpp b/src/view/StatsPanel.cpp
index 62c1200..2349174 100644
--- a/src/view/StatsPanel.cpp
+++ b/src/view/StatsPanel.cpp
@@ -176,12 +176,10 @@ void StatsPanel::UpdateStats(int monthFrom, int yearFrom, int monthTo, int yearT
 
     if (_chartView)
     {
-    	_vbox2->removeWidget(_chartView);
-        delete _chartView;
+	_plot->removeAllSeries();
     }
-
-    _plot = new QChart();
-    _plot->createDefaultAxes();
+    else
+	_plot = new QChart();
 
     if (monthFrom == monthTo && yearFrom == yearTo)
     {
@@ -301,9 +299,13 @@ void StatsPanel::UpdateStats(int monthFrom, int yearFrom, int monthTo, int yearT
 
     _plot->createDefaultAxes();
     _plot->setAxisX(axisX, series0);
-    _chartView = new QChartView(_plot);
-    _chartView->setRenderHint(QPainter::Antialiasing);
-    _vbox2->addWidget(_chartView);
+
+    if (!_chartView)
+    {
+	_chartView = new QChartView(_plot);
+	_chartView->setRenderHint(QPainter::Antialiasing);
+	_vbox2->addWidget(_chartView);
+    }
 
     total = 0.0;
     for(i=0, categoriesIt = categories.begin(); categoriesIt != categories.end(); categoriesIt++, i++)