From 409c1c9c6558850bbced8ba05bf125102e6543bb Mon Sep 17 00:00:00 2001
From: Dean Lee <deanlee3@gmail.com>
Date: Sat, 11 Feb 2023 02:13:28 +0800
Subject: [PATCH] cabana: set pen width in createSeries (#27288)

---
 tools/cabana/chartswidget.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/cabana/chartswidget.cc b/tools/cabana/chartswidget.cc
index e31e437280..b228a56973 100644
--- a/tools/cabana/chartswidget.cc
+++ b/tools/cabana/chartswidget.cc
@@ -789,6 +789,10 @@ QXYSeries *ChartView::createSeries(QAbstractSeries::SeriesType type, QColor colo
     // are drawn instead of the graphs on MacOS. Re-enable OpenGL when fixed
 #ifndef __APPLE__
   series->setUseOpenGL(true);
+  // Qt doesn't properly apply device pixel ratio in OpenGL mode
+  QPen pen = series->pen();
+  pen.setWidth(2.0 * qApp->devicePixelRatio());
+  series->setPen(pen);
 #endif
   return series;
 }