From 84b0d114d98c58ecf00e20987321182e8e2ba4c1 Mon Sep 17 00:00:00 2001
From: Jan Grulich <jgrulich@redhat.com>
Date: Wed, 26 Jul 2023 12:44:00 +0200
Subject: [PATCH 06/22] qt_fusionPalette: make links more legible on dark
 backgrounds

QPalette's default for Link is Qt::blue, which is difficult to read
on dark backgrounds.

Use the same blue that is already used for Highlight, as it is
consistent and easy to read.
---
 src/gui/kernel/qplatformtheme.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/gui/kernel/qplatformtheme.cpp b/src/gui/kernel/qplatformtheme.cpp
index 62f569bbef..14fdf94755 100644
--- a/src/gui/kernel/qplatformtheme.cpp
+++ b/src/gui/kernel/qplatformtheme.cpp
@@ -378,6 +378,7 @@ Q_GUI_EXPORT QPalette qt_fusionPalette()
     const QColor dark = backGround.darker(150);
     const QColor darkDisabled = QColor(209, 209, 209).darker(110);
     const QColor text = darkAppearance ? windowText : Qt::black;
+    const QColor highlight = QColor(48, 140, 198);
     const QColor hightlightedText = darkAppearance ? windowText : Qt::white;
     const QColor disabledText = darkAppearance ? QColor(130, 130, 130) : QColor(190, 190, 190);
     const QColor button = backGround;
@@ -399,12 +400,16 @@ Q_GUI_EXPORT QPalette qt_fusionPalette()
     fusionPalette.setBrush(QPalette::Disabled, QPalette::Dark, darkDisabled);
     fusionPalette.setBrush(QPalette::Disabled, QPalette::Shadow, disabledShadow);
 
-    fusionPalette.setBrush(QPalette::Active, QPalette::Highlight, QColor(48, 140, 198));
-    fusionPalette.setBrush(QPalette::Inactive, QPalette::Highlight, QColor(48, 140, 198));
+    fusionPalette.setBrush(QPalette::Active, QPalette::Highlight, highlight);
+    fusionPalette.setBrush(QPalette::Inactive, QPalette::Highlight, highlight);
     fusionPalette.setBrush(QPalette::Disabled, QPalette::Highlight, QColor(145, 145, 145));
 
     fusionPalette.setBrush(QPalette::PlaceholderText, placeholder);
 
+    // Use a more legible light blue on dark backgrounds than the default Qt::blue.
+    if (darkAppearance)
+        fusionPalette.setBrush(QPalette::Link, highlight);
+
     return fusionPalette;
 }
 
-- 
2.41.0