From d4930d77290cc807201e635b165794444c83fa49 Mon Sep 17 00:00:00 2001
From: jkriege2 <jan@jkrieger.de>
Date: Fri, 22 Dec 2023 21:09:41 +0100
Subject: [PATCH] IMPROVED: JKQTPGraphsModel generated High-DPI Icons, if
 necessary

---
 lib/jkqtplotter/gui/jkqtpgraphsmodel.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/jkqtplotter/gui/jkqtpgraphsmodel.cpp b/lib/jkqtplotter/gui/jkqtpgraphsmodel.cpp
index 2dcefcfc36..71a205a4ab 100644
--- a/lib/jkqtplotter/gui/jkqtpgraphsmodel.cpp
+++ b/lib/jkqtplotter/gui/jkqtpgraphsmodel.cpp
@@ -21,6 +21,7 @@
 
 #include "jkqtplotter/gui/jkqtpgraphsmodel.h"
 #include "jkqtplotter/jkqtpbaseplotter.h"
+#include <QGuiApplication>
 #include "jkqtplotter/jkqtptools.h"
 #include "jkqtplotter/graphs/jkqtpscatter.h"
 #include <QImage>
@@ -51,6 +52,10 @@ QVariant JKQTPGraphsModel::data(const QModelIndex &index, int role) const
        if (index.row()<static_cast<int>(m_plotter->getGraphCount())) return m_plotter->getGraph(static_cast<size_t>(index.row()))->isVisible()?Qt::Checked:Qt::Unchecked;
     } else if (role == Qt::DecorationRole) {
         if (index.row()<static_cast<int>(m_plotter->getGraphCount())) {
+            const qreal dpr = qGuiApp->devicePixelRatio();
+            QPixmap pix=QPixmap::fromImage(m_plotter->getGraph(static_cast<size_t>(index.row()))->generateKeyMarker(QSize(16,16)*dpr));
+            pix.setDevicePixelRatio(dpr);
+
             return m_plotter->getGraph(static_cast<size_t>(index.row()))->generateKeyMarker(QSize(16,16));
         }
     }