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diff --git a/archived/projt-launcher/launcher/ui/themes/ThemeManager.h b/archived/projt-launcher/launcher/ui/themes/ThemeManager.h
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+// SPDX-License-Identifier: GPL-3.0-only
+// SPDX-FileCopyrightText: 2026 Project Tick
+// SPDX-FileContributor: Project Tick Team
+/*
+ *  ProjT Launcher - Minecraft Launcher
+ *  Copyright (C) 2026 Project Tick
+ *
+ *  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, write to the Free Software Foundation,
+ *  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * === Upstream License Block (Do Not Modify) ==============================
+ *
+ *
+ *
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2024 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
+ *  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, write to the Free Software Foundation,
+ *  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ======================================================================== */
+#pragma once
+
+#include <QDir>
+#include <QLoggingCategory>
+#include <QString>
+#include <memory>
+
+#include "IconTheme.h"
+#include "ui/themes/CatPack.h"
+#include "ui/themes/Theme.h"
+
+inline auto themeDebugLog() {
+    return qDebug() << "[Theme]";
+}
+inline auto themeWarningLog() {
+    return qWarning() << "[Theme]";
+}
+
+class ThemeManager {
+   public:
+    ThemeManager();
+    ~ThemeManager();
+
+    QList<IconTheme*> getValidIconThemes();
+    QList<Theme*> getValidApplicationThemes();
+    bool isValidIconTheme(const QString& id);
+    bool isValidApplicationTheme(const QString& id);
+    QDir getIconThemesFolder();
+    QDir getApplicationThemesFolder();
+    QDir getCatPacksFolder();
+    void applyCurrentlySelectedTheme(bool initial = false);
+    void setIconTheme(const QString& name);
+    void setApplicationTheme(const QString& name, bool initial = false);
+
+    /// @brief Returns the background based on selected and with events (Birthday, XMas, etc.)
+    /// @param catName Optional, if you need a specific background.
+    /// @return
+    QString getCatPack(QString catName = "");
+    QList<CatPack*> getValidCatPacks();
+
+    const LogColors& getLogColors() { return m_logColors; }
+
+    void refresh();
+
+   private:
+    std::map<QString, std::unique_ptr<Theme>> m_themes;
+    std::map<QString, IconTheme> m_icons;
+    QDir m_iconThemeFolder{"iconthemes"};
+    QDir m_applicationThemeFolder{"themes"};
+    QDir m_catPacksFolder{"catpacks"};
+    std::map<QString, std::unique_ptr<CatPack>> m_catPacks;
+    QPalette m_defaultPalette;
+    QString m_defaultStyle;
+    LogColors m_logColors;
+
+    void initializeThemes();
+    void initializeCatPacks();
+    QString addTheme(std::unique_ptr<Theme> theme);
+    Theme* getTheme(QString themeId);
+    QString addIconTheme(IconTheme theme);
+    QString addCatPack(std::unique_ptr<CatPack> catPack);
+    void initializeIcons();
+    void initializeWidgets();
+
+    // On non-Mac systems, this is a no-op.
+    void setTitlebarColorOnMac(WId windowId, QColor color);
+    // This also will set the titlebar color of newly opened windows after this method is called.
+    // On non-Mac systems, this is a no-op.
+    void setTitlebarColorOfAllWindowsOnMac(QColor color);
+    // On non-Mac systems, this is a no-op.
+    void stopSettingNewWindowColorsOnMac();
+#ifdef Q_OS_MACOS
+    NSObject* m_windowTitlebarObserver = nullptr;
+#endif
+
+    const QStringList builtinIcons{"pe_colored", "pe_light", "pe_dark", "pe_blue",    "breeze_light", "breeze_dark",
+                                   "OSX",        "iOS",      "flat",    "flat_white", "multimc"};
+};