From 7a6cba7f51068a367c2dcd1908d1f3f329e8d50f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?M=C3=A9ven=20Car?= <meven@kde.org>
Date: Wed, 6 Sep 2023 10:40:22 +0200
Subject: [PATCH] KItemListWidget: make unfocused alternate background slightly
 lighter

---
 src/kitemviews/kitemlistwidget.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/kitemviews/kitemlistwidget.cpp b/src/kitemviews/kitemlistwidget.cpp
index cfaf891752..fb985ba23c 100644
--- a/src/kitemviews/kitemlistwidget.cpp
+++ b/src/kitemviews/kitemlistwidget.cpp
@@ -105,7 +105,17 @@ void KItemListWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *o
     Q_UNUSED(option)
 
     if (m_alternateBackground) {
-        const QColor backgroundColor = m_styleOption.palette.color(QPalette::AlternateBase);
+        QColor backgroundColor = m_styleOption.palette.color(QPalette::AlternateBase);
+        if (!widget->hasFocus()) {
+            QColor baseColor = m_styleOption.palette.color(QPalette::Base);
+            if (baseColor.lightnessF() > 0.5) {
+                // theme seems light
+                backgroundColor = backgroundColor.lighter(101);
+            } else {
+                // theme seems dark
+                backgroundColor = backgroundColor.darker(101);
+            }
+        }
         const QRectF backgroundRect(0, 0, size().width(), size().height());
         painter->fillRect(backgroundRect, backgroundColor);
     }