Use proxy style to force ActivateItemOnSingleClick off

Signed-off-by: TheKodeToad <TheKodeToad@proton.me>
(cherry picked from commit e3f55f6865)

launcher/CMakeLists.txt

@@ -827,6 +827,8 @@ SET(LAUNCHER_SOURCES
     ui/themes/DarkTheme.h
     ui/themes/ITheme.cpp
     ui/themes/ITheme.h
+    ui/themes/HintOverrideProxyStyle.cpp
+    ui/themes/HintOverrideProxyStyle.h
     ui/themes/SystemTheme.cpp
     ui/themes/SystemTheme.h
     ui/themes/IconTheme.cpp

launcher/ui/themes/HintOverrideProxyStyle.cpp

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "HintOverrideProxyStyle.h"
+
+int HintOverrideProxyStyle::styleHint(QStyle::StyleHint hint,
+                                      const QStyleOption* option,
+                                      const QWidget* widget,
+                                      QStyleHintReturn* returnData) const
+{
+    if (hint == QStyle::SH_ItemView_ActivateItemOnSingleClick)
+        return 0;
+
+    return QProxyStyle::styleHint(hint, option, widget, returnData);
+}

launcher/ui/themes/HintOverrideProxyStyle.h

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QProxyStyle>
+#include <iostream>
+
+/// Used to override platform-specific behaviours which the launcher does work well with.
+class HintOverrideProxyStyle : public QProxyStyle {
+    Q_OBJECT
+   public:
+    HintOverrideProxyStyle(QStyle* style) : QProxyStyle(style) {}
+
+    int styleHint(QStyle::StyleHint hint,
+                  const QStyleOption* option = nullptr,
+                  const QWidget* widget = nullptr,
+                  QStyleHintReturn* returnData = nullptr) const override;
+};

launcher/ui/themes/ITheme.cpp

@@ -2,6 +2,7 @@
 /*
  *  Prism Launcher - Minecraft Launcher
  *  Copyright (C) 2022 Tayou <git@tayou.org>
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -36,12 +37,13 @@
 #include <QDir>
 #include <QStyleFactory>
 #include "Application.h"
+#include "HintOverrideProxyStyle.h"
 #include "rainbow.h"
 
 void ITheme::apply(bool)
 {
     APPLICATION->setStyleSheet(QString());
-    QApplication::setStyle(QStyleFactory::create(qtTheme()));
+    QApplication::setStyle(new HintOverrideProxyStyle(QStyleFactory::create(qtTheme())));
     if (hasColorScheme()) {
         QApplication::setPalette(colorScheme());
     }

launcher/ui/themes/SystemTheme.cpp

@@ -2,6 +2,7 @@
 /*
  *  Prism Launcher - Minecraft Launcher
  *  Copyright (C) 2022 Tayou <git@tayou.org>
+ *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -37,6 +38,7 @@
 #include <QDebug>
 #include <QStyle>
 #include <QStyleFactory>
+#include "HintOverrideProxyStyle.h"
 #include "ThemeManager.h"
 
 SystemTheme::SystemTheme()
@@ -64,8 +66,11 @@ void SystemTheme::apply(bool initial)
 {
     // See https://github.com/MultiMC/Launcher/issues/1790
     // or https://github.com/PrismLauncher/PrismLauncher/issues/490
-    if (initial)
+    if (initial) {
+        QApplication::setStyle(new HintOverrideProxyStyle(QStyleFactory::create(qtTheme())));
         return;
+    }
+
     ITheme::apply(initial);
 }