From 5649fc30caf5ae32164b859d058d91802d3a0efc Mon Sep 17 00:00:00 2001
From: Alessandro Portale <alessandro.portale@qt.io>
Date: Fri, 2 Dec 2022 16:45:40 +0100
Subject: [PATCH] main: Prevent GTK3 platform theme plugin from enforcing a
 dark palette

Fixes: QTCREATORBUG-28497
Change-Id: Ib49b57aafe044d711940db3ea0e0778206221111
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
---
 src/app/main.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/app/main.cpp b/src/app/main.cpp
index e197f17393a..bdd80ed34e2 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -494,6 +494,11 @@ int main(int argc, char **argv)
         qputenv("QT_ENABLE_REGEXP_JIT", "0");
     }
 
+    if (Utils::HostOsInfo::isLinuxHost() && !qEnvironmentVariableIsSet("GTK_THEME"))
+        // Work around QTCREATORBUG-28497:
+        // Prevent Qt's GTK3 platform theme plugin from enforcing a dark palette
+        qputenv("GTK_THEME", ":light");
+
 #if defined(QTC_FORCE_XCB)
     if (Utils::HostOsInfo::isLinuxHost() && !qEnvironmentVariableIsSet("QT_QPA_PLATFORM")) {
         // Enforce XCB on Linux/Gnome, if the user didn't override via QT_QPA_PLATFORM