Merge branch 'PrismLauncher:develop' into instance-accounts

57 files changed, 2828 insertions, 825 deletions

diff --git a/launcher/Application.cpp b/launcher/Application.cpp
index ff34a168..ed8d8d2c 100644
--- a/launcher/Application.cpp
+++ b/launcher/Application.cpp
@@ -62,15 +62,11 @@
 #include "ui/pages/global/APIPage.h"
 #include "ui/pages/global/CustomCommandsPage.h"
 
-#ifdef Q_OS_WIN
-#include "ui/WinDarkmode.h"
-#include <versionhelpers.h>
-#endif
-
 #include "ui/setupwizard/SetupWizard.h"
 #include "ui/setupwizard/LanguageWizardPage.h"
 #include "ui/setupwizard/JavaWizardPage.h"
 #include "ui/setupwizard/PasteWizardPage.h"
+#include "ui/setupwizard/ThemeWizardPage.h"
 
 #include "ui/dialogs/CustomMessageBox.h"
 
@@ -502,7 +498,7 @@ Application::Application(int &argc, char **argv) : QApplication(argc, argv)
 
         // Theming
         m_settings->registerSetting("IconTheme", QString("pe_colored"));
-        m_settings->registerSetting("ApplicationTheme", QString("system"));
+        m_settings->registerSetting("ApplicationTheme", QString());
         m_settings->registerSetting("BackgroundCat", QString("kitteh"));
 
         // Remembered state
@@ -851,10 +847,7 @@ Application::Application(int &argc, char **argv) : QApplication(argc, argv)
     });
 
     {
-        setIconTheme(settings()->get("IconTheme").toString());
-        qDebug() << "<> Icon theme set.";
-        setApplicationTheme(settings()->get("ApplicationTheme").toString(), true);
-        qDebug() << "<> Application theme set.";
+        applyCurrentlySelectedTheme();
     }
 
     updateCapabilities();
@@ -897,7 +890,8 @@ bool Application::createSetupWizard()
         return false;
     }();
     bool pasteInterventionRequired = settings()->get("PastebinURL") != "";
-    bool wizardRequired = javaRequired || languageRequired || pasteInterventionRequired;
+    bool themeInterventionRequired = settings()->get("ApplicationTheme") == "";
+    bool wizardRequired = javaRequired || languageRequired || pasteInterventionRequired || themeInterventionRequired;
 
     if(wizardRequired)
     {
@@ -916,6 +910,12 @@ bool Application::createSetupWizard()
         {
             m_setupWizard->addPage(new PasteWizardPage(m_setupWizard));
         }
+
+        if (themeInterventionRequired)
+        {
+            settings()->set("ApplicationTheme", QString("system")); // set default theme after going into theme wizard
+            m_setupWizard->addPage(new ThemeWizardPage(m_setupWizard));
+        }
         connect(m_setupWizard, &QDialog::finished, this, &Application::setupWizardFinished);
         m_setupWizard->show();
         return true;
@@ -1123,9 +1123,14 @@ QList<ITheme*> Application::getValidApplicationThemes()
     return m_themeManager->getValidApplicationThemes();
 }
 
-void Application::setApplicationTheme(const QString& name, bool initial)
+void Application::applyCurrentlySelectedTheme()
+{
+    m_themeManager->applyCurrentlySelectedTheme();
+}
+
+void Application::setApplicationTheme(const QString& name)
 {
-    m_themeManager->setApplicationTheme(name, initial);
+    m_themeManager->setApplicationTheme(name);
 }
 
 void Application::setIconTheme(const QString& name)
@@ -1353,16 +1358,7 @@ MainWindow* Application::showMainWindow(bool minimized)
         m_mainWindow = new MainWindow();
         m_mainWindow->restoreState(QByteArray::fromBase64(APPLICATION->settings()->get("MainWindowState").toByteArray()));
         m_mainWindow->restoreGeometry(QByteArray::fromBase64(APPLICATION->settings()->get("MainWindowGeometry").toByteArray()));
-#ifdef Q_OS_WIN
-        if (IsWindows10OrGreater())
-        {
-            if (QString::compare(settings()->get("ApplicationTheme").toString(), "dark") == 0) {
-                WinDarkmode::setDarkWinTitlebar(m_mainWindow->winId(), true);
-            } else {
-                WinDarkmode::setDarkWinTitlebar(m_mainWindow->winId(), false);
-            }
-        }
-#endif
+
         if(minimized)
         {
             m_mainWindow->showMinimized();
diff --git a/launcher/Application.h b/launcher/Application.h
index 7884227a..a7938629 100644
--- a/launcher/Application.h
+++ b/launcher/Application.h
@@ -120,9 +120,11 @@ public:
 
     void setIconTheme(const QString& name);
 
+    void applyCurrentlySelectedTheme();
+
     QList<ITheme*> getValidApplicationThemes();
 
-    void setApplicationTheme(const QString& name, bool initial);
+    void setApplicationTheme(const QString& name);
 
     shared_qobject_ptr<UpdateChecker> updateChecker() {
         return m_updateChecker;
diff --git a/launcher/CMakeLists.txt b/launcher/CMakeLists.txt
index 6ca88ec6..74b7b212 100644
--- a/launcher/CMakeLists.txt
+++ b/launcher/CMakeLists.txt
@@ -331,12 +331,18 @@ set(MINECRAFT_SOURCES
     minecraft/mod/Resource.cpp
     minecraft/mod/ResourceFolderModel.h
     minecraft/mod/ResourceFolderModel.cpp
+    minecraft/mod/DataPack.h
+    minecraft/mod/DataPack.cpp
     minecraft/mod/ResourcePack.h
     minecraft/mod/ResourcePack.cpp
     minecraft/mod/ResourcePackFolderModel.h
     minecraft/mod/ResourcePackFolderModel.cpp
     minecraft/mod/TexturePack.h
     minecraft/mod/TexturePack.cpp
+    minecraft/mod/ShaderPack.h
+    minecraft/mod/ShaderPack.cpp
+    minecraft/mod/WorldSave.h
+    minecraft/mod/WorldSave.cpp
     minecraft/mod/TexturePackFolderModel.h
     minecraft/mod/TexturePackFolderModel.cpp
     minecraft/mod/ShaderPackFolderModel.h
@@ -347,10 +353,18 @@ set(MINECRAFT_SOURCES
     minecraft/mod/tasks/LocalModParseTask.cpp
     minecraft/mod/tasks/LocalModUpdateTask.h
     minecraft/mod/tasks/LocalModUpdateTask.cpp
+    minecraft/mod/tasks/LocalDataPackParseTask.h
+    minecraft/mod/tasks/LocalDataPackParseTask.cpp
     minecraft/mod/tasks/LocalResourcePackParseTask.h
     minecraft/mod/tasks/LocalResourcePackParseTask.cpp
     minecraft/mod/tasks/LocalTexturePackParseTask.h
     minecraft/mod/tasks/LocalTexturePackParseTask.cpp
+    minecraft/mod/tasks/LocalShaderPackParseTask.h
+    minecraft/mod/tasks/LocalShaderPackParseTask.cpp
+    minecraft/mod/tasks/LocalWorldSaveParseTask.h
+    minecraft/mod/tasks/LocalWorldSaveParseTask.cpp
+    minecraft/mod/tasks/LocalResourceParse.h
+    minecraft/mod/tasks/LocalResourceParse.cpp
 
     # Assets
     minecraft/AssetsUtils.h
@@ -669,6 +683,8 @@ SET(LAUNCHER_SOURCES
     ui/setupwizard/LanguageWizardPage.h
     ui/setupwizard/PasteWizardPage.cpp
     ui/setupwizard/PasteWizardPage.h
+    ui/setupwizard/ThemeWizardPage.cpp
+    ui/setupwizard/ThemeWizardPage.h
 
     # GUI - themes
     ui/themes/FusionTheme.cpp
@@ -908,6 +924,8 @@ SET(LAUNCHER_SOURCES
     ui/widgets/ProgressWidget.cpp
     ui/widgets/WideBar.h
     ui/widgets/WideBar.cpp
+    ui/widgets/ThemeCustomizationWidget.h
+    ui/widgets/ThemeCustomizationWidget.cpp
 
     # GUI - instance group view
     ui/instanceview/InstanceProxyModel.cpp
@@ -923,18 +941,9 @@ SET(LAUNCHER_SOURCES
     ui/instanceview/VisualGroup.h
 )
 
-if(WIN32)
-    set(LAUNCHER_SOURCES
-        ${LAUNCHER_SOURCES}
-
-        # GUI - dark titlebar for Windows 10/11
-        ui/WinDarkmode.h
-        ui/WinDarkmode.cpp
-    )
-endif()
-
 qt_wrap_ui(LAUNCHER_UI
     ui/setupwizard/PasteWizardPage.ui
+    ui/setupwizard/ThemeWizardPage.ui
     ui/pages/global/AccountListPage.ui
     ui/pages/global/JavaPage.ui
     ui/pages/global/LauncherPage.ui
@@ -967,6 +976,7 @@ qt_wrap_ui(LAUNCHER_UI
     ui/widgets/CustomCommands.ui
     ui/widgets/InfoFrame.ui
     ui/widgets/ModFilterWidget.ui
+    ui/widgets/ThemeCustomizationWidget.ui
     ui/dialogs/CopyInstanceDialog.ui
     ui/dialogs/ProfileSetupDialog.ui
     ui/dialogs/ProgressDialog.ui
diff --git a/launcher/FileSystem.cpp b/launcher/FileSystem.cpp
index b3af4f4e..aee5245d 100644
--- a/launcher/FileSystem.cpp
+++ b/launcher/FileSystem.cpp
@@ -57,6 +57,7 @@
 #include <shlobj.h>
 #include <shobjidl.h>
 #include <sys/utime.h>
+#include <versionhelpers.h>
 #include <windows.h>
 #include <winnls.h>
 #include <string>
@@ -214,6 +215,22 @@ bool copy::operator()(const QString& offset, bool dryRun)
     return err.value() == 0;
 }
 
+bool move(const QString& source, const QString& dest)
+{
+    std::error_code err;
+
+    ensureFilePathExists(dest);
+    fs::rename(StringUtils::toStdString(source), StringUtils::toStdString(dest), err);
+
+    if (err) {
+        qWarning() << "Failed to move file:" << QString::fromStdString(err.message());
+        qDebug() << "Source file:" << source;
+        qDebug() << "Destination file:" << dest;
+    }
+
+    return err.value() == 0;
+}
+
 bool deletePath(QString path)
 {
     std::error_code err;
@@ -235,6 +252,10 @@ bool trash(QString path, QString *pathInTrash)
     // FIXME: Figure out trash in Flatpak. Qt seemingly doesn't use the Trash portal
     if (DesktopServices::isFlatpak())
         return false;
+#if defined Q_OS_WIN32
+    if (IsWindowsServer())
+        return false;
+#endif
     return QFile::moveToTrash(path, pathInTrash);
 #endif
 }
diff --git a/launcher/FileSystem.h b/launcher/FileSystem.h
index 15233b66..f083f3c7 100644
--- a/launcher/FileSystem.h
+++ b/launcher/FileSystem.h
@@ -123,6 +123,14 @@ class copy : public QObject {
 };
 
 /**
+ * @brief moves a file by renaming it
+ * @param source source file path
+ * @param dest destination filepath
+ * 
+ */
+bool move(const QString&  source, const QString& dest);
+
+/**
  * Delete a folder recursively
  */
 bool deletePath(QString path);
diff --git a/launcher/minecraft/mod/DataPack.cpp b/launcher/minecraft/mod/DataPack.cpp
new file mode 100644
index 00000000..5c58f6b2
--- /dev/null
+++ b/launcher/minecraft/mod/DataPack.cpp
@@ -0,0 +1,108 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 "DataPack.h"
+
+#include <QDebug>
+#include <QMap>
+#include <QRegularExpression>
+
+#include "Version.h"
+
+// Values taken from:
+// https://minecraft.fandom.com/wiki/Tutorials/Creating_a_data_pack#%22pack_format%22
+static const QMap<int, std::pair<Version, Version>> s_pack_format_versions = {
+    { 4, { Version("1.13"), Version("1.14.4") } },   { 5, { Version("1.15"), Version("1.16.1") } },
+    { 6, { Version("1.16.2"), Version("1.16.5") } }, { 7, { Version("1.17"), Version("1.17.1") } },
+    { 8, { Version("1.18"), Version("1.18.1") } },   { 9, { Version("1.18.2"), Version("1.18.2") } },
+    { 10, { Version("1.19"), Version("1.19.3") } },
+};
+
+void DataPack::setPackFormat(int new_format_id)
+{
+    QMutexLocker locker(&m_data_lock);
+
+    if (!s_pack_format_versions.contains(new_format_id)) {
+        qWarning() << "Pack format '" << new_format_id << "' is not a recognized data pack id!";
+    }
+
+    m_pack_format = new_format_id;
+}
+
+void DataPack::setDescription(QString new_description)
+{
+    QMutexLocker locker(&m_data_lock);
+
+    m_description = new_description;
+}
+
+std::pair<Version, Version> DataPack::compatibleVersions() const
+{
+    if (!s_pack_format_versions.contains(m_pack_format)) {
+        return { {}, {} };
+    }
+
+    return s_pack_format_versions.constFind(m_pack_format).value();
+}
+
+std::pair<int, bool> DataPack::compare(const Resource& other, SortType type) const
+{
+    auto const& cast_other = static_cast<DataPack const&>(other);
+
+    switch (type) {
+        default: {
+            auto res = Resource::compare(other, type);
+            if (res.first != 0)
+                return res;
+        }
+        case SortType::PACK_FORMAT: {
+            auto this_ver = packFormat();
+            auto other_ver = cast_other.packFormat();
+
+            if (this_ver > other_ver)
+                return { 1, type == SortType::PACK_FORMAT };
+            if (this_ver < other_ver)
+                return { -1, type == SortType::PACK_FORMAT };
+        }
+    }
+    return { 0, false };
+}
+
+bool DataPack::applyFilter(QRegularExpression filter) const
+{
+    if (filter.match(description()).hasMatch())
+        return true;
+
+    if (filter.match(QString::number(packFormat())).hasMatch())
+        return true;
+
+    if (filter.match(compatibleVersions().first.toString()).hasMatch())
+        return true;
+    if (filter.match(compatibleVersions().second.toString()).hasMatch())
+        return true;
+
+    return Resource::applyFilter(filter);
+}
+
+bool DataPack::valid() const
+{
+    return m_pack_format != 0;
+}
diff --git a/launcher/minecraft/mod/DataPack.h b/launcher/minecraft/mod/DataPack.h
new file mode 100644
index 00000000..fc2703c7
--- /dev/null
+++ b/launcher/minecraft/mod/DataPack.h
@@ -0,0 +1,73 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 "Resource.h"
+
+#include <QMutex>
+
+class Version;
+
+/* TODO:
+ *
+ * Store localized descriptions
+ * */
+
+class DataPack : public Resource {
+    Q_OBJECT
+   public:
+    using Ptr = shared_qobject_ptr<Resource>;
+
+    DataPack(QObject* parent = nullptr) : Resource(parent) {}
+    DataPack(QFileInfo file_info) : Resource(file_info) {}
+
+    /** Gets the numerical ID of the pack format. */
+    [[nodiscard]] int packFormat() const { return m_pack_format; }
+    /** Gets, respectively, the lower and upper versions supported by the set pack format. */
+    [[nodiscard]] std::pair<Version, Version> compatibleVersions() const;
+
+    /** Gets the description of the data pack. */
+    [[nodiscard]] QString description() const { return m_description; }
+
+    /** Thread-safe. */
+    void setPackFormat(int new_format_id);
+
+    /** Thread-safe. */
+    void setDescription(QString new_description);
+
+    bool valid() const override;
+
+    [[nodiscard]] auto compare(Resource const& other, SortType type) const -> std::pair<int, bool> override;
+    [[nodiscard]] bool applyFilter(QRegularExpression filter) const override;
+
+   protected:
+    mutable QMutex m_data_lock;
+
+    /* The 'version' of a data pack, as defined in the pack.mcmeta file.
+     * See https://minecraft.fandom.com/wiki/Data_pack#pack.mcmeta
+     */
+    int m_pack_format = 0;
+
+    /** The data pack's description, as defined in the pack.mcmeta file.
+     */
+    QString m_description;
+};
diff --git a/launcher/minecraft/mod/Mod.cpp b/launcher/minecraft/mod/Mod.cpp
index 9cd0056c..c495cd47 100644
--- a/launcher/minecraft/mod/Mod.cpp
+++ b/launcher/minecraft/mod/Mod.cpp
@@ -43,6 +43,7 @@
 
 #include "MetadataHandler.h"
 #include "Version.h"
+#include "minecraft/mod/ModDetails.h"
 
 static ModPlatform::ProviderCapabilities ProviderCaps;
 
@@ -70,6 +71,10 @@ void Mod::setMetadata(std::shared_ptr<Metadata::ModStruct>&& metadata)
     m_local_details.metadata = metadata;
 }
 
+void Mod::setDetails(const ModDetails& details) {
+    m_local_details = details;
+}
+
 std::pair<int, bool> Mod::compare(const Resource& other, SortType type) const
 {
     auto cast_other = dynamic_cast<Mod const*>(&other);
@@ -204,3 +209,8 @@ auto Mod::provider() const -> std::optional<QString>
         return ProviderCaps.readableName(metadata()->provider);
     return {};
 }
+
+bool Mod::valid() const
+{
+    return !m_local_details.mod_id.isEmpty();
+}
diff --git a/launcher/minecraft/mod/Mod.h b/launcher/minecraft/mod/Mod.h
index 8185c8fc..c4032538 100644
--- a/launcher/minecraft/mod/Mod.h
+++ b/launcher/minecraft/mod/Mod.h
@@ -71,6 +71,9 @@ public:
     void setStatus(ModStatus status);
     void setMetadata(std::shared_ptr<Metadata::ModStruct>&& metadata);
     void setMetadata(const Metadata::ModStruct& metadata) { setMetadata(std::make_shared<Metadata::ModStruct>(metadata)); }
+    void setDetails(const ModDetails& details);
+
+    bool valid() const override;
 
     [[nodiscard]] auto compare(Resource const& other, SortType type) const -> std::pair<int, bool> override;
     [[nodiscard]] bool applyFilter(QRegularExpression filter) const override;
diff --git a/launcher/minecraft/mod/ModDetails.h b/launcher/minecraft/mod/ModDetails.h
index dd84b0a3..176e4fc1 100644
--- a/launcher/minecraft/mod/ModDetails.h
+++ b/launcher/minecraft/mod/ModDetails.h
@@ -81,7 +81,7 @@ struct ModDetails
     ModDetails() = default;
 
     /** Metadata should be handled manually to properly set the mod status. */
-    ModDetails(ModDetails& other)
+    ModDetails(const ModDetails& other)
         : mod_id(other.mod_id)
         , name(other.name)
         , version(other.version)
@@ -92,7 +92,7 @@ struct ModDetails
         , status(other.status)
     {}
 
-    ModDetails& operator=(ModDetails& other)
+    ModDetails& operator=(const ModDetails& other)
     {
         this->mod_id = other.mod_id;
         this->name = other.name;
@@ -106,7 +106,7 @@ struct ModDetails
         return *this;
     }
 
-    ModDetails& operator=(ModDetails&& other)
+    ModDetails& operator=(const ModDetails&& other)
     {
         this->mod_id = other.mod_id;
         this->name = other.name;
diff --git a/launcher/minecraft/mod/ResourcePack.cpp b/launcher/minecraft/mod/ResourcePack.cpp
index 3a2fd771..876d5c3e 100644
--- a/launcher/minecraft/mod/ResourcePack.cpp
+++ b/launcher/minecraft/mod/ResourcePack.cpp
@@ -13,11 +13,12 @@
 // Values taken from:
 // https://minecraft.fandom.com/wiki/Tutorials/Creating_a_resource_pack#Formatting_pack.mcmeta
 static const QMap<int, std::pair<Version, Version>> s_pack_format_versions = {
-    { 1, { Version("1.6.1"), Version("1.8.9") } }, { 2, { Version("1.9"), Version("1.10.2") } },
-    { 3, { Version("1.11"), Version("1.12.2") } }, { 4, { Version("1.13"), Version("1.14.4") } },
-    { 5, { Version("1.15"), Version("1.16.1") } }, { 6, { Version("1.16.2"), Version("1.16.5") } },
-    { 7, { Version("1.17"), Version("1.17.1") } }, { 8, { Version("1.18"), Version("1.18.2") } },
-    { 9, { Version("1.19"), Version("1.19.2") } }, { 11, { Version("1.19.3"), Version("1.19.3") } },
+    { 1, { Version("1.6.1"), Version("1.8.9") } },    { 2, { Version("1.9"), Version("1.10.2") } },
+    { 3, { Version("1.11"), Version("1.12.2") } },    { 4, { Version("1.13"), Version("1.14.4") } },
+    { 5, { Version("1.15"), Version("1.16.1") } },    { 6, { Version("1.16.2"), Version("1.16.5") } },
+    { 7, { Version("1.17"), Version("1.17.1") } },    { 8, { Version("1.18"), Version("1.18.2") } },
+    { 9, { Version("1.19"), Version("1.19.2") } },    { 11, { Version("22w42a"), Version("22w44a") } },
+    { 12, { Version("1.19.3"), Version("1.19.3") } },
 };
 
 void ResourcePack::setPackFormat(int new_format_id)
@@ -25,7 +26,7 @@ void ResourcePack::setPackFormat(int new_format_id)
     QMutexLocker locker(&m_data_lock);
 
     if (!s_pack_format_versions.contains(new_format_id)) {
-        qWarning() << "Pack format '%1' is not a recognized resource pack id!";
+        qWarning() << "Pack format '" << new_format_id << "' is not a recognized resource pack id!";
     }
 
     m_pack_format = new_format_id;
diff --git a/launcher/minecraft/mod/ShaderPack.cpp b/launcher/minecraft/mod/ShaderPack.cpp
new file mode 100644
index 00000000..6a9641de
--- /dev/null
+++ b/launcher/minecraft/mod/ShaderPack.cpp
@@ -0,0 +1,37 @@
+
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 "ShaderPack.h"
+
+#include "minecraft/mod/tasks/LocalShaderPackParseTask.h"
+
+void ShaderPack::setPackFormat(ShaderPackFormat new_format)
+{
+    QMutexLocker locker(&m_data_lock);
+
+    m_pack_format = new_format;
+}
+
+bool ShaderPack::valid() const
+{
+    return m_pack_format != ShaderPackFormat::INVALID;
+}
diff --git a/launcher/minecraft/mod/ShaderPack.h b/launcher/minecraft/mod/ShaderPack.h
new file mode 100644
index 00000000..ec0f9404
--- /dev/null
+++ b/launcher/minecraft/mod/ShaderPack.h
@@ -0,0 +1,62 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 "Resource.h"
+
+/* Info:
+ * Currently For Optifine / Iris shader packs,
+ * could be expanded to support others should they exist?
+ *
+ * This class and enum are mostly here as placeholders for validating
+ * that a shaderpack exists and is in the right format,
+ * namely that they contain a folder named 'shaders'.
+ *
+ * In the technical sense it would be possible to parse files like `shaders/shaders.properties`
+ * to get information like the available profiles but this is not all that useful without more knowledge of the
+ * shader mod used to be able to change settings.
+ */
+
+#include <QMutex>
+
+enum class ShaderPackFormat { VALID, INVALID };
+
+class ShaderPack : public Resource {
+    Q_OBJECT
+   public:
+    using Ptr = shared_qobject_ptr<Resource>;
+
+    [[nodiscard]] ShaderPackFormat packFormat() const { return m_pack_format; }
+
+    ShaderPack(QObject* parent = nullptr) : Resource(parent) {}
+    ShaderPack(QFileInfo file_info) : Resource(file_info) {}
+
+    /** Thread-safe. */
+    void setPackFormat(ShaderPackFormat new_format);
+
+    bool valid() const override;
+
+   protected:
+    mutable QMutex m_data_lock;
+
+    ShaderPackFormat m_pack_format = ShaderPackFormat::INVALID;
+};
diff --git a/launcher/minecraft/mod/WorldSave.cpp b/launcher/minecraft/mod/WorldSave.cpp
new file mode 100644
index 00000000..7123f512
--- /dev/null
+++ b/launcher/minecraft/mod/WorldSave.cpp
@@ -0,0 +1,43 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 "WorldSave.h"
+
+#include "minecraft/mod/tasks/LocalWorldSaveParseTask.h"
+
+void WorldSave::setSaveFormat(WorldSaveFormat new_save_format)
+{
+    QMutexLocker locker(&m_data_lock);
+
+    m_save_format = new_save_format;
+}
+
+void WorldSave::setSaveDirName(QString dir_name)
+{
+    QMutexLocker locker(&m_data_lock);
+
+    m_save_dir_name = dir_name;
+}
+
+bool WorldSave::valid() const
+{
+    return m_save_format != WorldSaveFormat::INVALID;
+}
diff --git a/launcher/minecraft/mod/WorldSave.h b/launcher/minecraft/mod/WorldSave.h
new file mode 100644
index 00000000..5985fc8a
--- /dev/null
+++ b/launcher/minecraft/mod/WorldSave.h
@@ -0,0 +1,61 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 "Resource.h"
+
+#include <QMutex>
+
+class Version;
+
+enum class WorldSaveFormat { SINGLE, MULTI, INVALID };
+
+class WorldSave : public Resource {
+    Q_OBJECT
+   public:
+    using Ptr = shared_qobject_ptr<Resource>;
+
+    WorldSave(QObject* parent = nullptr) : Resource(parent) {}
+    WorldSave(QFileInfo file_info) : Resource(file_info) {}
+
+    /** Gets the format of the save. */
+    [[nodiscard]] WorldSaveFormat saveFormat() const { return m_save_format; }
+    /** Gets the name of the save dir (first found in multi mode). */
+    [[nodiscard]] QString saveDirName() const { return m_save_dir_name; }
+
+    /** Thread-safe. */
+    void setSaveFormat(WorldSaveFormat new_save_format);
+    /** Thread-safe. */
+    void setSaveDirName(QString dir_name);
+
+    bool valid() const override;
+
+   protected:
+    mutable QMutex m_data_lock;
+
+    /** The format in which the save file is in.
+     *  Since saves can be distributed in various slightly different ways, this allows us to treat them separately.
+     */
+    WorldSaveFormat m_save_format = WorldSaveFormat::INVALID;
+
+    QString m_save_dir_name;
+};
diff --git a/launcher/minecraft/mod/tasks/LocalDataPackParseTask.cpp b/launcher/minecraft/mod/tasks/LocalDataPackParseTask.cpp
new file mode 100644
index 00000000..3fcb2110
--- /dev/null
+++ b/launcher/minecraft/mod/tasks/LocalDataPackParseTask.cpp
@@ -0,0 +1,177 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 "LocalDataPackParseTask.h"
+
+#include "FileSystem.h"
+#include "Json.h"
+
+#include <quazip/quazip.h>
+#include <quazip/quazipdir.h>
+#include <quazip/quazipfile.h>
+
+#include <QCryptographicHash>
+
+namespace DataPackUtils {
+
+bool process(DataPack& pack, ProcessingLevel level)
+{
+    switch (pack.type()) {
+        case ResourceType::FOLDER:
+            return DataPackUtils::processFolder(pack, level);
+        case ResourceType::ZIPFILE:
+            return DataPackUtils::processZIP(pack, level);
+        default:
+            qWarning() << "Invalid type for data pack parse task!";
+            return false;
+    }
+}
+
+bool processFolder(DataPack& pack, ProcessingLevel level)
+{
+    Q_ASSERT(pack.type() == ResourceType::FOLDER);
+
+    auto mcmeta_invalid = [&pack]() {
+        qWarning() << "Resource pack at" << pack.fileinfo().filePath() << "does not have a valid pack.mcmeta";
+        return false;  // the mcmeta is not optional
+    };
+
+    QFileInfo mcmeta_file_info(FS::PathCombine(pack.fileinfo().filePath(), "pack.mcmeta"));
+    if (mcmeta_file_info.exists() && mcmeta_file_info.isFile()) {
+        QFile mcmeta_file(mcmeta_file_info.filePath());
+        if (!mcmeta_file.open(QIODevice::ReadOnly))
+            return mcmeta_invalid();  // can't open mcmeta file
+
+        auto data = mcmeta_file.readAll();
+
+        bool mcmeta_result = DataPackUtils::processMCMeta(pack, std::move(data));
+
+        mcmeta_file.close();
+        if (!mcmeta_result) {
+            return mcmeta_invalid();  // mcmeta invalid
+        }
+    } else {
+        return mcmeta_invalid();  // mcmeta file isn't a valid file
+    }
+
+    QFileInfo data_dir_info(FS::PathCombine(pack.fileinfo().filePath(), "data"));
+    if (!data_dir_info.exists() || !data_dir_info.isDir()) {
+        return false;  // data dir does not exists or isn't valid
+    }
+
+    if (level == ProcessingLevel::BasicInfoOnly) {
+        return true;  // only need basic info already checked
+    }
+
+    return true;  // all tests passed
+}
+
+bool processZIP(DataPack& pack, ProcessingLevel level)
+{
+    Q_ASSERT(pack.type() == ResourceType::ZIPFILE);
+
+    QuaZip zip(pack.fileinfo().filePath());
+    if (!zip.open(QuaZip::mdUnzip))
+        return false;  // can't open zip file
+
+    QuaZipFile file(&zip);
+
+    auto mcmeta_invalid = [&pack]() {
+        qWarning() << "Resource pack at" << pack.fileinfo().filePath() << "does not have a valid pack.mcmeta";
+        return false;  // the mcmeta is not optional
+    };
+
+    if (zip.setCurrentFile("pack.mcmeta")) {
+        if (!file.open(QIODevice::ReadOnly)) {
+            qCritical() << "Failed to open file in zip.";
+            zip.close();
+            return mcmeta_invalid();
+        }
+
+        auto data = file.readAll();
+
+        bool mcmeta_result = DataPackUtils::processMCMeta(pack, std::move(data));
+
+        file.close();
+        if (!mcmeta_result) {
+            return mcmeta_invalid();  // mcmeta invalid
+        }
+    } else {
+        return mcmeta_invalid();  // could not set pack.mcmeta as current file.
+    }
+
+    QuaZipDir zipDir(&zip);
+    if (!zipDir.exists("/data")) {
+        return false;  // data dir does not exists at zip root
+    }
+
+    if (level == ProcessingLevel::BasicInfoOnly) {
+        zip.close();
+        return true;  // only need basic info already checked
+    }
+
+    zip.close();
+
+    return true;
+}
+
+// https://minecraft.fandom.com/wiki/Data_pack#pack.mcmeta
+bool processMCMeta(DataPack& pack, QByteArray&& raw_data)
+{
+    try {
+        auto json_doc = QJsonDocument::fromJson(raw_data);
+        auto pack_obj = Json::requireObject(json_doc.object(), "pack", {});
+
+        pack.setPackFormat(Json::ensureInteger(pack_obj, "pack_format", 0));
+        pack.setDescription(Json::ensureString(pack_obj, "description", ""));
+    } catch (Json::JsonException& e) {
+        qWarning() << "JsonException: " << e.what() << e.cause();
+        return false;
+    }
+    return true;
+}
+
+bool validate(QFileInfo file)
+{
+    DataPack dp{ file };
+    return DataPackUtils::process(dp, ProcessingLevel::BasicInfoOnly) && dp.valid();
+}
+
+}  // namespace DataPackUtils
+
+LocalDataPackParseTask::LocalDataPackParseTask(int token, DataPack& dp) : Task(nullptr, false), m_token(token), m_data_pack(dp) {}
+
+bool LocalDataPackParseTask::abort()
+{
+    m_aborted = true;
+    return true;
+}
+
+void LocalDataPackParseTask::executeTask()
+{
+    if (!DataPackUtils::process(m_data_pack))
+        return;
+
+    if (m_aborted)
+        emitAborted();
+    else
+        emitSucceeded();
+}
diff --git a/launcher/minecraft/mod/tasks/LocalDataPackParseTask.h b/launcher/minecraft/mod/tasks/LocalDataPackParseTask.h
new file mode 100644
index 00000000..12fd8c82
--- /dev/null
+++ b/launcher/minecraft/mod/tasks/LocalDataPackParseTask.h
@@ -0,0 +1,65 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 <QDebug>
+#include <QObject>
+
+#include "minecraft/mod/DataPack.h"
+
+#include "tasks/Task.h"
+
+namespace DataPackUtils {
+
+enum class ProcessingLevel { Full, BasicInfoOnly };
+
+bool process(DataPack& pack, ProcessingLevel level = ProcessingLevel::Full);
+
+bool processZIP(DataPack& pack, ProcessingLevel level = ProcessingLevel::Full);
+bool processFolder(DataPack& pack, ProcessingLevel level = ProcessingLevel::Full);
+
+bool processMCMeta(DataPack& pack, QByteArray&& raw_data);
+
+/** Checks whether a file is valid as a data pack or not. */
+bool validate(QFileInfo file);
+
+}  // namespace DataPackUtils
+
+class LocalDataPackParseTask : public Task {
+    Q_OBJECT
+   public:
+    LocalDataPackParseTask(int token, DataPack& dp);
+
+    [[nodiscard]] bool canAbort() const override { return true; }
+    bool abort() override;
+
+    void executeTask() override;
+
+    [[nodiscard]] int token() const { return m_token; }
+
+   private:
+    int m_token;
+
+    DataPack& m_data_pack;
+
+    bool m_aborted = false;
+};
diff --git a/launcher/minecraft/mod/tasks/LocalModParseTask.cpp b/launcher/minecraft/mod/tasks/LocalModParseTask.cpp
index 774f6114..8bfe2c84 100644
--- a/launcher/minecraft/mod/tasks/LocalModParseTask.cpp
+++ b/launcher/minecraft/mod/tasks/LocalModParseTask.cpp
@@ -11,9 +11,10 @@
 
 #include "FileSystem.h"
 #include "Json.h"
+#include "minecraft/mod/ModDetails.h"
 #include "settings/INIFile.h"
 
-namespace {
+namespace ModUtils {
 
 // NEW format
 // https://github.com/MinecraftForge/FML/wiki/FML-mod-information-file/6f62b37cea040daf350dc253eae6326dd9c822c3
@@ -283,35 +284,46 @@ ModDetails ReadLiteModInfo(QByteArray contents)
     return details;
 }
 
-}  // namespace
-
-LocalModParseTask::LocalModParseTask(int token, ResourceType type, const QFileInfo& modFile)
-    : Task(nullptr, false), m_token(token), m_type(type), m_modFile(modFile), m_result(new Result())
-{}
+bool process(Mod& mod, ProcessingLevel level)
+{
+    switch (mod.type()) {
+        case ResourceType::FOLDER:
+            return processFolder(mod, level);
+        case ResourceType::ZIPFILE:
+            return processZIP(mod, level);
+        case ResourceType::LITEMOD:
+            return processLitemod(mod);
+        default:
+            qWarning() << "Invalid type for mod parse task!";
+            return false;
+    }
+}
 
-void LocalModParseTask::processAsZip()
+bool processZIP(Mod& mod, ProcessingLevel level)
 {
-    QuaZip zip(m_modFile.filePath());
+    ModDetails details;
+
+    QuaZip zip(mod.fileinfo().filePath());
     if (!zip.open(QuaZip::mdUnzip))
-        return;
+        return false;
 
     QuaZipFile file(&zip);
 
     if (zip.setCurrentFile("META-INF/mods.toml")) {
         if (!file.open(QIODevice::ReadOnly)) {
             zip.close();
-            return;
+            return false;
         }
 
-        m_result->details = ReadMCModTOML(file.readAll());
+        details = ReadMCModTOML(file.readAll());
         file.close();
 
         // to replace ${file.jarVersion} with the actual version, as needed
-        if (m_result->details.version == "${file.jarVersion}") {
+        if (details.version == "${file.jarVersion}") {
             if (zip.setCurrentFile("META-INF/MANIFEST.MF")) {
                 if (!file.open(QIODevice::ReadOnly)) {
                     zip.close();
-                    return;
+                    return false;
                 }
 
                 // quick and dirty line-by-line parser
@@ -330,93 +342,131 @@ void LocalModParseTask::processAsZip()
                     manifestVersion = "NONE";
                 }
 
-                m_result->details.version = manifestVersion;
+                details.version = manifestVersion;
 
                 file.close();
             }
         }
 
         zip.close();
-        return;
+        mod.setDetails(details);
+
+        return true;
     } else if (zip.setCurrentFile("mcmod.info")) {
         if (!file.open(QIODevice::ReadOnly)) {
             zip.close();
-            return;
+            return false;
         }
 
-        m_result->details = ReadMCModInfo(file.readAll());
+        details = ReadMCModInfo(file.readAll());
         file.close();
         zip.close();
-        return;
+
+        mod.setDetails(details);
+        return true;
     } else if (zip.setCurrentFile("quilt.mod.json")) {
         if (!file.open(QIODevice::ReadOnly)) {
             zip.close();
-            return;
+            return false;
         }
 
-        m_result->details = ReadQuiltModInfo(file.readAll());
+        details = ReadQuiltModInfo(file.readAll());
         file.close();
         zip.close();
-        return;
+
+        mod.setDetails(details);
+        return true;
     } else if (zip.setCurrentFile("fabric.mod.json")) {
         if (!file.open(QIODevice::ReadOnly)) {
             zip.close();
-            return;
+            return false;
         }
 
-        m_result->details = ReadFabricModInfo(file.readAll());
+        details = ReadFabricModInfo(file.readAll());
         file.close();
         zip.close();
-        return;
+
+        mod.setDetails(details);
+        return true;
     } else if (zip.setCurrentFile("forgeversion.properties")) {
         if (!file.open(QIODevice::ReadOnly)) {
             zip.close();
-            return;
+            return false;
         }
 
-        m_result->details = ReadForgeInfo(file.readAll());
+        details = ReadForgeInfo(file.readAll());
         file.close();
         zip.close();
-        return;
+
+        mod.setDetails(details);
+        return true;
     }
 
     zip.close();
+    return false;  // no valid mod found in archive
 }
 
-void LocalModParseTask::processAsFolder()
+bool processFolder(Mod& mod, ProcessingLevel level)
 {
-    QFileInfo mcmod_info(FS::PathCombine(m_modFile.filePath(), "mcmod.info"));
-    if (mcmod_info.isFile()) {
+    ModDetails details;
+
+    QFileInfo mcmod_info(FS::PathCombine(mod.fileinfo().filePath(), "mcmod.info"));
+    if (mcmod_info.exists() && mcmod_info.isFile()) {
         QFile mcmod(mcmod_info.filePath());
         if (!mcmod.open(QIODevice::ReadOnly))
-            return;
+            return false;
         auto data = mcmod.readAll();
         if (data.isEmpty() || data.isNull())
-            return;
-        m_result->details = ReadMCModInfo(data);
+            return false;
+        details = ReadMCModInfo(data);
+
+        mod.setDetails(details);
+        return true;
     }
+
+    return false;  // no valid mcmod.info file found
 }
 
-void LocalModParseTask::processAsLitemod()
+bool processLitemod(Mod& mod, ProcessingLevel level)
 {
-    QuaZip zip(m_modFile.filePath());
+    ModDetails details;
+
+    QuaZip zip(mod.fileinfo().filePath());
     if (!zip.open(QuaZip::mdUnzip))
-        return;
+        return false;
 
     QuaZipFile file(&zip);
 
     if (zip.setCurrentFile("litemod.json")) {
         if (!file.open(QIODevice::ReadOnly)) {
             zip.close();
-            return;
+            return false;
         }
 
-        m_result->details = ReadLiteModInfo(file.readAll());
+        details = ReadLiteModInfo(file.readAll());
         file.close();
+
+        mod.setDetails(details);
+        return true;
     }
     zip.close();
+
+    return false;  // no valid litemod.json found in archive
 }
 
+/** Checks whether a file is valid as a mod or not. */
+bool validate(QFileInfo file)
+{
+    Mod mod{ file };
+    return ModUtils::process(mod, ProcessingLevel::BasicInfoOnly) && mod.valid();
+}
+
+}  // namespace ModUtils
+
+LocalModParseTask::LocalModParseTask(int token, ResourceType type, const QFileInfo& modFile)
+    : Task(nullptr, false), m_token(token), m_type(type), m_modFile(modFile), m_result(new Result())
+{}
+
 bool LocalModParseTask::abort()
 {
     m_aborted.store(true);
@@ -425,19 +475,10 @@ bool LocalModParseTask::abort()
 
 void LocalModParseTask::executeTask()
 {
-    switch (m_type) {
-        case ResourceType::ZIPFILE:
-            processAsZip();
-            break;
-        case ResourceType::FOLDER:
-            processAsFolder();
-            break;
-        case ResourceType::LITEMOD:
-            processAsLitemod();
-            break;
-        default:
-            break;
-    }
+    Mod mod{ m_modFile };
+    ModUtils::process(mod, ModUtils::ProcessingLevel::Full);
+
+    m_result->details = mod.details();
 
     if (m_aborted)
         emit finished();
diff --git a/launcher/minecraft/mod/tasks/LocalModParseTask.h b/launcher/minecraft/mod/tasks/LocalModParseTask.h
index 413eb2d1..38dae135 100644
--- a/launcher/minecraft/mod/tasks/LocalModParseTask.h
+++ b/launcher/minecraft/mod/tasks/LocalModParseTask.h
@@ -8,32 +8,48 @@
 
 #include "tasks/Task.h"
 
-class LocalModParseTask : public Task
-{
+namespace ModUtils {
+
+ModDetails ReadFabricModInfo(QByteArray contents);
+ModDetails ReadQuiltModInfo(QByteArray contents);
+ModDetails ReadForgeInfo(QByteArray contents);
+ModDetails ReadLiteModInfo(QByteArray contents);
+
+enum class ProcessingLevel { Full, BasicInfoOnly };
+
+bool process(Mod& mod, ProcessingLevel level = ProcessingLevel::Full);
+
+bool processZIP(Mod& mod, ProcessingLevel level = ProcessingLevel::Full);
+bool processFolder(Mod& mod, ProcessingLevel level = ProcessingLevel::Full);
+bool processLitemod(Mod& mod, ProcessingLevel level = ProcessingLevel::Full);
+
+/** Checks whether a file is valid as a mod or not. */
+bool validate(QFileInfo file);
+}  // namespace ModUtils
+
+class LocalModParseTask : public Task {
     Q_OBJECT
-public:
+   public:
     struct Result {
         ModDetails details;
     };
     using ResultPtr = std::shared_ptr<Result>;
-    ResultPtr result() const {
-        return m_result;
-    }
+    ResultPtr result() const { return m_result; }
 
     [[nodiscard]] bool canAbort() const override { return true; }
     bool abort() override;
 
-    LocalModParseTask(int token, ResourceType type, const QFileInfo & modFile);
+    LocalModParseTask(int token, ResourceType type, const QFileInfo& modFile);
     void executeTask() override;
 
     [[nodiscard]] int token() const { return m_token; }
 
-private:
+   private:
     void processAsZip();
     void processAsFolder();
     void processAsLitemod();
 
-private:
+   private:
     int m_token;
     ResourceType m_type;
     QFileInfo m_modFile;
diff --git a/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.cpp b/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.cpp
index 6fd4b024..4bf0b80d 100644
--- a/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.cpp
+++ b/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.cpp
@@ -22,6 +22,7 @@
 #include "Json.h"
 
 #include <quazip/quazip.h>
+#include <quazip/quazipdir.h>
 #include <quazip/quazipfile.h>
 
 #include <QCryptographicHash>
@@ -32,99 +33,152 @@ bool process(ResourcePack& pack, ProcessingLevel level)
 {
     switch (pack.type()) {
         case ResourceType::FOLDER:
-            ResourcePackUtils::processFolder(pack, level);
-            return true;
+            return ResourcePackUtils::processFolder(pack, level);
         case ResourceType::ZIPFILE:
-            ResourcePackUtils::processZIP(pack, level);
-            return true;
+            return ResourcePackUtils::processZIP(pack, level);
         default:
             qWarning() << "Invalid type for resource pack parse task!";
             return false;
     }
 }
 
-void processFolder(ResourcePack& pack, ProcessingLevel level)
+bool processFolder(ResourcePack& pack, ProcessingLevel level)
 {
     Q_ASSERT(pack.type() == ResourceType::FOLDER);
 
+    auto mcmeta_invalid = [&pack]() {
+        qWarning() << "Resource pack at" << pack.fileinfo().filePath() << "does not have a valid pack.mcmeta";
+        return false;  // the mcmeta is not optional
+    };
+
     QFileInfo mcmeta_file_info(FS::PathCombine(pack.fileinfo().filePath(), "pack.mcmeta"));
-    if (mcmeta_file_info.isFile()) {
+    if (mcmeta_file_info.exists() && mcmeta_file_info.isFile()) {
         QFile mcmeta_file(mcmeta_file_info.filePath());
         if (!mcmeta_file.open(QIODevice::ReadOnly))
-            return;
+            return mcmeta_invalid();  // can't open mcmeta file
 
         auto data = mcmeta_file.readAll();
 
-        ResourcePackUtils::processMCMeta(pack, std::move(data));
+        bool mcmeta_result = ResourcePackUtils::processMCMeta(pack, std::move(data));
 
         mcmeta_file.close();
+        if (!mcmeta_result) {
+            return mcmeta_invalid();  // mcmeta invalid
+        }
+    } else {
+        return mcmeta_invalid();  // mcmeta file isn't a valid file
     }
 
-    if (level == ProcessingLevel::BasicInfoOnly)
-        return;
+    QFileInfo assets_dir_info(FS::PathCombine(pack.fileinfo().filePath(), "assets"));
+    if (!assets_dir_info.exists() || !assets_dir_info.isDir()) {
+        return false;  // assets dir does not exists or isn't valid
+    }
+
+    if (level == ProcessingLevel::BasicInfoOnly) {
+        return true;  // only need basic info already checked
+    }
+
+    auto png_invalid = [&pack]() {
+        qWarning() << "Resource pack at" << pack.fileinfo().filePath() << "does not have a valid pack.png";
+        return true;  // the png is optional
+    };
 
     QFileInfo image_file_info(FS::PathCombine(pack.fileinfo().filePath(), "pack.png"));
-    if (image_file_info.isFile()) {
-        QFile mcmeta_file(image_file_info.filePath());
-        if (!mcmeta_file.open(QIODevice::ReadOnly))
-            return;
+    if (image_file_info.exists() && image_file_info.isFile()) {
+        QFile pack_png_file(image_file_info.filePath());
+        if (!pack_png_file.open(QIODevice::ReadOnly))
+            return png_invalid();  // can't open pack.png file
 
-        auto data = mcmeta_file.readAll();
+        auto data = pack_png_file.readAll();
 
-        ResourcePackUtils::processPackPNG(pack, std::move(data));
+        bool pack_png_result = ResourcePackUtils::processPackPNG(pack, std::move(data));
 
-        mcmeta_file.close();
+        pack_png_file.close();
+        if (!pack_png_result) {
+            return png_invalid();  // pack.png invalid
+        }
+    } else {
+        return png_invalid();  // pack.png does not exists or is not a valid file.
     }
+
+    return true;  // all tests passed
 }
 
-void processZIP(ResourcePack& pack, ProcessingLevel level)
+bool processZIP(ResourcePack& pack, ProcessingLevel level)
 {
     Q_ASSERT(pack.type() == ResourceType::ZIPFILE);
 
     QuaZip zip(pack.fileinfo().filePath());
     if (!zip.open(QuaZip::mdUnzip))
-        return;
+        return false;  // can't open zip file
 
     QuaZipFile file(&zip);
 
+    auto mcmeta_invalid = [&pack]() {
+        qWarning() << "Resource pack at" << pack.fileinfo().filePath() << "does not have a valid pack.mcmeta";
+        return false;  // the mcmeta is not optional
+    };
+
     if (zip.setCurrentFile("pack.mcmeta")) {
         if (!file.open(QIODevice::ReadOnly)) {
             qCritical() << "Failed to open file in zip.";
             zip.close();
-            return;
+            return mcmeta_invalid();
         }
 
         auto data = file.readAll();
 
-        ResourcePackUtils::processMCMeta(pack, std::move(data));
+        bool mcmeta_result = ResourcePackUtils::processMCMeta(pack, std::move(data));
 
         file.close();
+        if (!mcmeta_result) {
+            return mcmeta_invalid();  // mcmeta invalid
+        }
+    } else {
+        return mcmeta_invalid();  // could not set pack.mcmeta as current file.
+    }
+
+    QuaZipDir zipDir(&zip);
+    if (!zipDir.exists("/assets")) {
+        return false;  // assets dir does not exists at zip root
     }
 
     if (level == ProcessingLevel::BasicInfoOnly) {
         zip.close();
-        return;
+        return true;  // only need basic info already checked
     }
 
+    auto png_invalid = [&pack]() {
+        qWarning() << "Resource pack at" << pack.fileinfo().filePath() << "does not have a valid pack.png";
+        return true;  // the png is optional
+    };
+
     if (zip.setCurrentFile("pack.png")) {
         if (!file.open(QIODevice::ReadOnly)) {
             qCritical() << "Failed to open file in zip.";
             zip.close();
-            return;
+            return png_invalid();
         }
 
         auto data = file.readAll();
 
-        ResourcePackUtils::processPackPNG(pack, std::move(data));
+        bool pack_png_result = ResourcePackUtils::processPackPNG(pack, std::move(data));
 
         file.close();
+        if (!pack_png_result) {
+            return png_invalid();  // pack.png invalid
+        }
+    } else {
+        return png_invalid();  // could not set pack.mcmeta as current file.
     }
 
     zip.close();
+
+    return true;
 }
 
 // https://minecraft.fandom.com/wiki/Tutorials/Creating_a_resource_pack#Formatting_pack.mcmeta
-void processMCMeta(ResourcePack& pack, QByteArray&& raw_data)
+bool processMCMeta(ResourcePack& pack, QByteArray&& raw_data)
 {
     try {
         auto json_doc = QJsonDocument::fromJson(raw_data);
@@ -134,17 +188,21 @@ void processMCMeta(ResourcePack& pack, QByteArray&& raw_data)
         pack.setDescription(Json::ensureString(pack_obj, "description", ""));
     } catch (Json::JsonException& e) {
         qWarning() << "JsonException: " << e.what() << e.cause();
+        return false;
     }
+    return true;
 }
 
-void processPackPNG(ResourcePack& pack, QByteArray&& raw_data)
+bool processPackPNG(ResourcePack& pack, QByteArray&& raw_data)
 {
     auto img = QImage::fromData(raw_data);
     if (!img.isNull()) {
         pack.setImage(img);
     } else {
         qWarning() << "Failed to parse pack.png.";
+        return false;
     }
+    return true;
 }
 
 bool validate(QFileInfo file)
diff --git a/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.h b/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.h
index 69dbd6ad..d0c24c2b 100644
--- a/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.h
+++ b/launcher/minecraft/mod/tasks/LocalResourcePackParseTask.h
@@ -31,11 +31,11 @@ enum class ProcessingLevel { Full, BasicInfoOnly };
 
 bool process(ResourcePack& pack, ProcessingLevel level = ProcessingLevel::Full);
 
-void processZIP(ResourcePack& pack, ProcessingLevel level = ProcessingLevel::Full);
-void processFolder(ResourcePack& pack, ProcessingLevel level = ProcessingLevel::Full);
+bool processZIP(ResourcePack& pack, ProcessingLevel level = ProcessingLevel::Full);
+bool processFolder(ResourcePack& pack, ProcessingLevel level = ProcessingLevel::Full);
 
-void processMCMeta(ResourcePack& pack, QByteArray&& raw_data);
-void processPackPNG(ResourcePack& pack, QByteArray&& raw_data);
+bool processMCMeta(ResourcePack& pack, QByteArray&& raw_data);
+bool processPackPNG(ResourcePack& pack, QByteArray&& raw_data);
 
 /** Checks whether a file is valid as a resource pack or not. */
 bool validate(QFileInfo file);
diff --git a/launcher/minecraft/mod/tasks/LocalResourceParse.cpp b/launcher/minecraft/mod/tasks/LocalResourceParse.cpp
new file mode 100644
index 00000000..19ddc899
--- /dev/null
+++ b/launcher/minecraft/mod/tasks/LocalResourceParse.cpp
@@ -0,0 +1,60 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 "LocalResourceParse.h"
+
+#include "LocalDataPackParseTask.h"
+#include "LocalModParseTask.h"
+#include "LocalResourcePackParseTask.h"
+#include "LocalShaderPackParseTask.h"
+#include "LocalTexturePackParseTask.h"
+#include "LocalWorldSaveParseTask.h"
+
+namespace ResourceUtils {
+PackedResourceType identify(QFileInfo file){
+    if (file.exists() && file.isFile()) {
+        if (ResourcePackUtils::validate(file)) {
+            qDebug() << file.fileName() << "is a resource pack";
+            return PackedResourceType::ResourcePack;
+        } else if (TexturePackUtils::validate(file)) {
+            qDebug() << file.fileName() << "is a pre 1.6 texture pack";
+            return PackedResourceType::TexturePack;
+        } else if (DataPackUtils::validate(file)) {
+            qDebug() << file.fileName() << "is a data pack";
+            return PackedResourceType::DataPack;
+        } else if (ModUtils::validate(file)) {
+            qDebug() << file.fileName() << "is a mod";
+            return PackedResourceType::Mod;
+        } else if (WorldSaveUtils::validate(file)) {
+            qDebug() << file.fileName() << "is a world save";
+            return PackedResourceType::WorldSave;
+        } else if (ShaderPackUtils::validate(file)) {
+            qDebug() << file.fileName() << "is a shader pack";
+            return PackedResourceType::ShaderPack;
+        } else {
+            qDebug() << "Can't Identify" << file.fileName() ;
+        }
+    } else {
+        qDebug() << "Can't find" << file.absolutePath();
+    }
+    return PackedResourceType::UNKNOWN;
+}
+}
diff --git a/launcher/minecraft/mod/tasks/LocalResourceParse.h b/launcher/minecraft/mod/tasks/LocalResourceParse.h
new file mode 100644
index 00000000..b07a874c
--- /dev/null
+++ b/launcher/minecraft/mod/tasks/LocalResourceParse.h
@@ -0,0 +1,31 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 <QDebug>
+#include <QFileInfo>
+#include <QObject>
+
+enum class PackedResourceType { DataPack, ResourcePack, TexturePack, ShaderPack, WorldSave, Mod, UNKNOWN };
+namespace ResourceUtils {
+PackedResourceType identify(QFileInfo file);
+}  // namespace ResourceUtils
diff --git a/launcher/minecraft/mod/tasks/LocalShaderPackParseTask.cpp b/launcher/minecraft/mod/tasks/LocalShaderPackParseTask.cpp
new file mode 100644
index 00000000..a9949735
--- /dev/null
+++ b/launcher/minecraft/mod/tasks/LocalShaderPackParseTask.cpp
@@ -0,0 +1,113 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 "LocalShaderPackParseTask.h"
+
+#include "FileSystem.h"
+
+#include <quazip/quazip.h>
+#include <quazip/quazipdir.h>
+#include <quazip/quazipfile.h>
+
+namespace ShaderPackUtils {
+
+bool process(ShaderPack& pack, ProcessingLevel level)
+{
+    switch (pack.type()) {
+        case ResourceType::FOLDER:
+            return ShaderPackUtils::processFolder(pack, level);
+        case ResourceType::ZIPFILE:
+            return ShaderPackUtils::processZIP(pack, level);
+        default:
+            qWarning() << "Invalid type for shader pack parse task!";
+            return false;
+    }
+}
+
+bool processFolder(ShaderPack& pack, ProcessingLevel level)
+{
+    Q_ASSERT(pack.type() == ResourceType::FOLDER);
+
+    QFileInfo shaders_dir_info(FS::PathCombine(pack.fileinfo().filePath(), "shaders"));
+    if (!shaders_dir_info.exists() || !shaders_dir_info.isDir()) {
+        return false;  // assets dir does not exists or isn't valid
+    }
+    pack.setPackFormat(ShaderPackFormat::VALID);
+
+    if (level == ProcessingLevel::BasicInfoOnly) {
+        return true;  // only need basic info already checked
+    }
+
+    return true;  // all tests passed
+}
+
+bool processZIP(ShaderPack& pack, ProcessingLevel level)
+{
+    Q_ASSERT(pack.type() == ResourceType::ZIPFILE);
+
+    QuaZip zip(pack.fileinfo().filePath());
+    if (!zip.open(QuaZip::mdUnzip))
+        return false;  // can't open zip file
+
+    QuaZipFile file(&zip);
+
+    QuaZipDir zipDir(&zip);
+    if (!zipDir.exists("/shaders")) {
+        return false;  // assets dir does not exists at zip root
+    }
+    pack.setPackFormat(ShaderPackFormat::VALID);
+
+    if (level == ProcessingLevel::BasicInfoOnly) {
+        zip.close();
+        return true;  // only need basic info already checked
+    }
+
+    zip.close();
+
+    return true;
+}
+
+bool validate(QFileInfo file)
+{
+    ShaderPack sp{ file };
+    return ShaderPackUtils::process(sp, ProcessingLevel::BasicInfoOnly) && sp.valid();
+}
+
+}  // namespace ShaderPackUtils
+
+LocalShaderPackParseTask::LocalShaderPackParseTask(int token, ShaderPack& sp) : Task(nullptr, false), m_token(token), m_shader_pack(sp) {}
+
+bool LocalShaderPackParseTask::abort()
+{
+    m_aborted = true;
+    return true;
+}
+
+void LocalShaderPackParseTask::executeTask()
+{
+    if (!ShaderPackUtils::process(m_shader_pack))
+        return;
+
+    if (m_aborted)
+        emitAborted();
+    else
+        emitSucceeded();
+}
diff --git a/launcher/minecraft/mod/tasks/LocalShaderPackParseTask.h b/launcher/minecraft/mod/tasks/LocalShaderPackParseTask.h
new file mode 100644
index 00000000..6be2183c
--- /dev/null
+++ b/launcher/minecraft/mod/tasks/LocalShaderPackParseTask.h
@@ -0,0 +1,62 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 <QDebug>
+#include <QObject>
+
+#include "minecraft/mod/ShaderPack.h"
+
+#include "tasks/Task.h"
+
+namespace ShaderPackUtils {
+
+enum class ProcessingLevel { Full, BasicInfoOnly };
+
+bool process(ShaderPack& pack, ProcessingLevel level = ProcessingLevel::Full);
+
+bool processZIP(ShaderPack& pack, ProcessingLevel level = ProcessingLevel::Full);
+bool processFolder(ShaderPack& pack, ProcessingLevel level = ProcessingLevel::Full);
+
+/** Checks whether a file is valid as a shader pack or not. */
+bool validate(QFileInfo file);
+}  // namespace ShaderPackUtils
+
+class LocalShaderPackParseTask : public Task {
+    Q_OBJECT
+   public:
+    LocalShaderPackParseTask(int token, ShaderPack& sp);
+
+    [[nodiscard]] bool canAbort() const override { return true; }
+    bool abort() override;
+
+    void executeTask() override;
+
+    [[nodiscard]] int token() const { return m_token; }
+
+   private:
+    int m_token;
+
+    ShaderPack& m_shader_pack;
+
+    bool m_aborted = false;
+};
diff --git a/launcher/minecraft/mod/tasks/LocalTexturePackParseTask.cpp b/launcher/minecraft/mod/tasks/LocalTexturePackParseTask.cpp
index adb19aca..38f1d7c1 100644
--- a/launcher/minecraft/mod/tasks/LocalTexturePackParseTask.cpp
+++ b/launcher/minecraft/mod/tasks/LocalTexturePackParseTask.cpp
@@ -32,18 +32,16 @@ bool process(TexturePack& pack, ProcessingLevel level)
 {
     switch (pack.type()) {
         case ResourceType::FOLDER:
-            TexturePackUtils::processFolder(pack, level);
-            return true;
+            return TexturePackUtils::processFolder(pack, level);
         case ResourceType::ZIPFILE:
-            TexturePackUtils::processZIP(pack, level);
-            return true;
+            return TexturePackUtils::processZIP(pack, level);
         default:
             qWarning() << "Invalid type for resource pack parse task!";
             return false;
     }
 }
 
-void processFolder(TexturePack& pack, ProcessingLevel level)
+bool processFolder(TexturePack& pack, ProcessingLevel level)
 {
     Q_ASSERT(pack.type() == ResourceType::FOLDER);
 
@@ -51,39 +49,51 @@ void processFolder(TexturePack& pack, ProcessingLevel level)
     if (mcmeta_file_info.isFile()) {
         QFile mcmeta_file(mcmeta_file_info.filePath());
         if (!mcmeta_file.open(QIODevice::ReadOnly))
-            return;
+            return false;
 
         auto data = mcmeta_file.readAll();
 
-        TexturePackUtils::processPackTXT(pack, std::move(data));
+        bool packTXT_result = TexturePackUtils::processPackTXT(pack, std::move(data));
 
         mcmeta_file.close();
+        if (!packTXT_result) {
+            return false;
+        }
+    } else {
+        return false;
     }
 
     if (level == ProcessingLevel::BasicInfoOnly)
-        return;
+        return true;
 
     QFileInfo image_file_info(FS::PathCombine(pack.fileinfo().filePath(), "pack.png"));
     if (image_file_info.isFile()) {
         QFile mcmeta_file(image_file_info.filePath());
         if (!mcmeta_file.open(QIODevice::ReadOnly))
-            return;
+            return false;
 
         auto data = mcmeta_file.readAll();
 
-        TexturePackUtils::processPackPNG(pack, std::move(data));
+        bool packPNG_result = TexturePackUtils::processPackPNG(pack, std::move(data));
 
         mcmeta_file.close();
+        if (!packPNG_result) {
+            return false;
+        }
+    } else {
+        return false;
     }
+
+    return true;
 }
 
-void processZIP(TexturePack& pack, ProcessingLevel level)
+bool processZIP(TexturePack& pack, ProcessingLevel level)
 {
     Q_ASSERT(pack.type() == ResourceType::ZIPFILE);
 
     QuaZip zip(pack.fileinfo().filePath());
     if (!zip.open(QuaZip::mdUnzip))
-        return;
+        return false;
 
     QuaZipFile file(&zip);
 
@@ -91,51 +101,62 @@ void processZIP(TexturePack& pack, ProcessingLevel level)
         if (!file.open(QIODevice::ReadOnly)) {
             qCritical() << "Failed to open file in zip.";
             zip.close();
-            return;
+            return false;
         }
 
         auto data = file.readAll();
 
-        TexturePackUtils::processPackTXT(pack, std::move(data));
+        bool packTXT_result = TexturePackUtils::processPackTXT(pack, std::move(data));
 
         file.close();
+        if (!packTXT_result) {
+            return false;
+        }
     }
 
     if (level == ProcessingLevel::BasicInfoOnly) {
         zip.close();
-        return;
+        return true;
     }
 
     if (zip.setCurrentFile("pack.png")) {
         if (!file.open(QIODevice::ReadOnly)) {
             qCritical() << "Failed to open file in zip.";
             zip.close();
-            return;
+            return false;
         }
 
         auto data = file.readAll();
 
-        TexturePackUtils::processPackPNG(pack, std::move(data));
+        bool packPNG_result = TexturePackUtils::processPackPNG(pack, std::move(data));
 
         file.close();
+        if (!packPNG_result) {
+            return false;
+        }
     }
 
     zip.close();
+
+    return true;
 }
 
-void processPackTXT(TexturePack& pack, QByteArray&& raw_data)
+bool processPackTXT(TexturePack& pack, QByteArray&& raw_data)
 {
     pack.setDescription(QString(raw_data));
+    return true;
 }
 
-void processPackPNG(TexturePack& pack, QByteArray&& raw_data)
+bool processPackPNG(TexturePack& pack, QByteArray&& raw_data)
 {
     auto img = QImage::fromData(raw_data);
     if (!img.isNull()) {
         pack.setImage(img);
     } else {
         qWarning() << "Failed to parse pack.png.";
+        return false;
     }
+    return true;
 }
 
 bool validate(QFileInfo file)
diff --git a/launcher/minecraft/mod/tasks/LocalTexturePackParseTask.h b/launcher/minecraft/mod/tasks/LocalTexturePackParseTask.h
index 9f7aab75..1589f8cb 100644
--- a/launcher/minecraft/mod/tasks/LocalTexturePackParseTask.h
+++ b/launcher/minecraft/mod/tasks/LocalTexturePackParseTask.h
@@ -32,11 +32,11 @@ enum class ProcessingLevel { Full, BasicInfoOnly };
 
 bool process(TexturePack& pack, ProcessingLevel level = ProcessingLevel::Full);
 
-void processZIP(TexturePack& pack, ProcessingLevel level = ProcessingLevel::Full);
-void processFolder(TexturePack& pack, ProcessingLevel level = ProcessingLevel::Full);
+bool processZIP(TexturePack& pack, ProcessingLevel level = ProcessingLevel::Full);
+bool processFolder(TexturePack& pack, ProcessingLevel level = ProcessingLevel::Full);
 
-void processPackTXT(TexturePack& pack, QByteArray&& raw_data);
-void processPackPNG(TexturePack& pack, QByteArray&& raw_data);
+bool processPackTXT(TexturePack& pack, QByteArray&& raw_data);
+bool processPackPNG(TexturePack& pack, QByteArray&& raw_data);
 
 /** Checks whether a file is valid as a texture pack or not. */
 bool validate(QFileInfo file);
diff --git a/launcher/minecraft/mod/tasks/LocalWorldSaveParseTask.cpp b/launcher/minecraft/mod/tasks/LocalWorldSaveParseTask.cpp
new file mode 100644
index 00000000..cbc8f8ce
--- /dev/null
+++ b/launcher/minecraft/mod/tasks/LocalWorldSaveParseTask.cpp
@@ -0,0 +1,190 @@
+
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 "LocalWorldSaveParseTask.h"
+
+#include "FileSystem.h"
+
+#include <quazip/quazip.h>
+#include <quazip/quazipdir.h>
+#include <quazip/quazipfile.h>
+
+#include <QDir>
+#include <QFileInfo>
+
+namespace WorldSaveUtils {
+
+bool process(WorldSave& pack, ProcessingLevel level)
+{
+    switch (pack.type()) {
+        case ResourceType::FOLDER:
+            return WorldSaveUtils::processFolder(pack, level);
+        case ResourceType::ZIPFILE:
+            return WorldSaveUtils::processZIP(pack, level);
+        default:
+            qWarning() << "Invalid type for world save parse task!";
+            return false;
+    }
+}
+
+/// @brief checks a folder structure to see if it contains a level.dat
+/// @param dir the path to check
+/// @param saves used in recursive call if a "saves" dir was found
+/// @return std::tuple of (
+///             bool <found level.dat>, 
+///             QString <name of folder containing level.dat>, 
+///             bool <saves folder found>
+///         )
+static std::tuple<bool, QString, bool> contains_level_dat(QDir dir, bool saves = false)
+{
+    for (auto const& entry : dir.entryInfoList()) {
+        if (!entry.isDir()) {
+            continue;
+        }
+        if (!saves && entry.fileName() == "saves") {
+            return contains_level_dat(QDir(entry.filePath()), true);
+        }
+        QFileInfo level_dat(FS::PathCombine(entry.filePath(), "level.dat"));
+        if (level_dat.exists() && level_dat.isFile()) {
+            return std::make_tuple(true, entry.fileName(), saves);
+        }
+    }
+    return std::make_tuple(false, "", saves);
+}
+
+bool processFolder(WorldSave& save, ProcessingLevel level)
+{
+    Q_ASSERT(save.type() == ResourceType::FOLDER);
+
+    auto [found, save_dir_name, found_saves_dir] = contains_level_dat(QDir(save.fileinfo().filePath()));
+
+    if (!found) {
+        return false;
+    }
+
+    save.setSaveDirName(save_dir_name);
+
+    if (found_saves_dir) {
+        save.setSaveFormat(WorldSaveFormat::MULTI);
+    } else {
+        save.setSaveFormat(WorldSaveFormat::SINGLE);
+    }
+
+    if (level == ProcessingLevel::BasicInfoOnly) {
+        return true;  // only need basic info already checked
+    }
+
+    // reserved for more intensive processing
+
+    return true;  // all tests passed
+}
+
+/// @brief checks a folder structure to see if it contains a level.dat
+/// @param zip the zip file to check
+/// @return std::tuple of (
+///             bool <found level.dat>, 
+///             QString <name of folder containing level.dat>, 
+///             bool <saves folder found>
+///         )
+static std::tuple<bool, QString, bool> contains_level_dat(QuaZip& zip)
+{
+    bool saves = false;
+    QuaZipDir zipDir(&zip);
+    if (zipDir.exists("/saves")) {
+        saves = true;
+        zipDir.cd("/saves");
+    }
+
+    for (auto const& entry : zipDir.entryList()) {
+        zipDir.cd(entry);
+        if (zipDir.exists("level.dat")) {
+            return std::make_tuple(true, entry, saves);
+        }
+        zipDir.cd("..");
+    }
+    return std::make_tuple(false, "", saves);
+}
+
+bool processZIP(WorldSave& save, ProcessingLevel level)
+{
+    Q_ASSERT(save.type() == ResourceType::ZIPFILE);
+
+    QuaZip zip(save.fileinfo().filePath());
+    if (!zip.open(QuaZip::mdUnzip))
+        return false;  // can't open zip file
+
+    auto [found, save_dir_name, found_saves_dir] = contains_level_dat(zip);
+
+    if (save_dir_name.endsWith("/")) {
+        save_dir_name.chop(1);
+    }
+
+    if (!found) {
+        return false;
+    }
+
+    save.setSaveDirName(save_dir_name);
+
+    if (found_saves_dir) {
+        save.setSaveFormat(WorldSaveFormat::MULTI);
+    } else {
+        save.setSaveFormat(WorldSaveFormat::SINGLE);
+    }
+
+    if (level == ProcessingLevel::BasicInfoOnly) {
+        zip.close();
+        return true;  // only need basic info already checked
+    }
+
+    // reserved for more intensive processing
+
+    zip.close();
+
+    return true;
+}
+
+bool validate(QFileInfo file)
+{
+    WorldSave sp{ file };
+    return WorldSaveUtils::process(sp, ProcessingLevel::BasicInfoOnly) && sp.valid();
+}
+
+}  // namespace WorldSaveUtils
+
+LocalWorldSaveParseTask::LocalWorldSaveParseTask(int token, WorldSave& save) : Task(nullptr, false), m_token(token), m_save(save) {}
+
+bool LocalWorldSaveParseTask::abort()
+{
+    m_aborted = true;
+    return true;
+}
+
+void LocalWorldSaveParseTask::executeTask()
+{
+    if (!WorldSaveUtils::process(m_save))
+        return;
+
+    if (m_aborted)
+        emitAborted();
+    else
+        emitSucceeded();
+}
diff --git a/launcher/minecraft/mod/tasks/LocalWorldSaveParseTask.h b/launcher/minecraft/mod/tasks/LocalWorldSaveParseTask.h
new file mode 100644
index 00000000..9dcdca2b
--- /dev/null
+++ b/launcher/minecraft/mod/tasks/LocalWorldSaveParseTask.h
@@ -0,0 +1,62 @@
+// SPDX-FileCopyrightText: 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  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 <QDebug>
+#include <QObject>
+
+#include "minecraft/mod/WorldSave.h"
+
+#include "tasks/Task.h"
+
+namespace WorldSaveUtils {
+
+enum class ProcessingLevel { Full, BasicInfoOnly };
+
+bool process(WorldSave& save, ProcessingLevel level = ProcessingLevel::Full);
+
+bool processZIP(WorldSave& pack, ProcessingLevel level = ProcessingLevel::Full);
+bool processFolder(WorldSave& pack, ProcessingLevel level = ProcessingLevel::Full);
+
+bool validate(QFileInfo file);
+
+} // namespace WorldSaveUtils
+
+class LocalWorldSaveParseTask : public Task {
+    Q_OBJECT
+   public:
+    LocalWorldSaveParseTask(int token, WorldSave& save);
+
+    [[nodiscard]] bool canAbort() const override { return true; }
+    bool abort() override;
+
+    void executeTask() override;
+
+    [[nodiscard]] int token() const { return m_token; }
+
+   private:
+    int m_token;
+
+    WorldSave& m_save;
+
+    bool m_aborted = false;
+};
diff --git a/launcher/modplatform/flame/FlameInstanceCreationTask.cpp b/launcher/modplatform/flame/FlameInstanceCreationTask.cpp
index 1d441f09..dc69769a 100644
--- a/launcher/modplatform/flame/FlameInstanceCreationTask.cpp
+++ b/launcher/modplatform/flame/FlameInstanceCreationTask.cpp
@@ -53,6 +53,13 @@
 #include "ui/dialogs/BlockedModsDialog.h"
 #include "ui/dialogs/CustomMessageBox.h"
 
+#include <QDebug>
+#include <QFileInfo>
+
+#include "minecraft/World.h"
+#include "minecraft/mod/tasks/LocalResourceParse.h"
+
+
 const static QMap<QString, QString> forgemap = { { "1.2.5", "3.4.9.171" },
                                                  { "1.4.2", "6.0.1.355" },
                                                  { "1.4.7", "6.6.2.534" },
@@ -401,6 +408,10 @@ void FlameCreationTask::idResolverSucceeded(QEventLoop& loop)
     QList<BlockedMod> blocked_mods;
     auto anyBlocked = false;
     for (const auto& result : results.files.values()) {
+        if (result.fileName.endsWith(".zip")) {
+            m_ZIP_resources.append(std::make_pair(result.fileName, result.targetFolder));
+        }
+
         if (!result.resolved || result.url.isEmpty()) {
             BlockedMod blocked_mod;
             blocked_mod.name = result.fileName;
@@ -439,38 +450,6 @@ void FlameCreationTask::idResolverSucceeded(QEventLoop& loop)
     }
 }
 
-/// @brief copy the matched blocked mods to the instance staging area
-/// @param blocked_mods list of the blocked mods and their matched paths
-void FlameCreationTask::copyBlockedMods(QList<BlockedMod> const& blocked_mods)
-{
-    setStatus(tr("Copying Blocked Mods..."));
-    setAbortable(false);
-    int i = 0;
-    int total = blocked_mods.length();
-    setProgress(i, total);
-    for (auto const& mod : blocked_mods) {
-        if (!mod.matched) {
-            qDebug() << mod.name << "was not matched to a local file, skipping copy";
-            continue;
-        }
-
-        auto dest_path = FS::PathCombine(m_stagingPath, "minecraft", mod.targetFolder, mod.name);
-
-        setStatus(tr("Copying Blocked Mods (%1 out of %2 are done)").arg(QString::number(i), QString::number(total)));
-
-        qDebug() << "Will try to copy" << mod.localPath << "to" << dest_path;
-
-        if (!FS::copy(mod.localPath, dest_path)()) {
-            qDebug() << "Copy of" << mod.localPath << "to" << dest_path << "Failed";
-        }
-
-        i++;
-        setProgress(i, total);
-    }
-
-    setAbortable(true);
-}
-
 void FlameCreationTask::setupDownloadJob(QEventLoop& loop)
 {
     m_files_job = new NetJob(tr("Mod download"), APPLICATION->network());
@@ -509,7 +488,10 @@ void FlameCreationTask::setupDownloadJob(QEventLoop& loop)
     }
 
     m_mod_id_resolver.reset();
-    connect(m_files_job.get(), &NetJob::succeeded, this, [&]() { m_files_job.reset(); });
+    connect(m_files_job.get(), &NetJob::succeeded, this, [&]() {
+        m_files_job.reset();
+        validateZIPResouces();
+    });
     connect(m_files_job.get(), &NetJob::failed, [&](QString reason) {
         m_files_job.reset();
         setError(reason);
@@ -520,3 +502,103 @@ void FlameCreationTask::setupDownloadJob(QEventLoop& loop)
     setStatus(tr("Downloading mods..."));
     m_files_job->start();
 }
+
+/// @brief copy the matched blocked mods to the instance staging area
+/// @param blocked_mods list of the blocked mods and their matched paths
+void FlameCreationTask::copyBlockedMods(QList<BlockedMod> const& blocked_mods)
+{
+    setStatus(tr("Copying Blocked Mods..."));
+    setAbortable(false);
+    int i = 0;
+    int total = blocked_mods.length();
+    setProgress(i, total);
+    for (auto const& mod : blocked_mods) {
+        if (!mod.matched) {
+            qDebug() << mod.name << "was not matched to a local file, skipping copy";
+            continue;
+        }
+
+        auto destPath = FS::PathCombine(m_stagingPath, "minecraft", mod.targetFolder, mod.name);
+
+        setStatus(tr("Copying Blocked Mods (%1 out of %2 are done)").arg(QString::number(i), QString::number(total)));
+
+        qDebug() << "Will try to copy" << mod.localPath << "to" << destPath;
+
+        if (!FS::copy(mod.localPath, destPath)()) {
+            qDebug() << "Copy of" << mod.localPath << "to" << destPath << "Failed";
+        }
+
+        i++;
+        setProgress(i, total);
+    }
+
+    setAbortable(true);
+}
+
+
+void FlameCreationTask::validateZIPResouces()
+{
+    qDebug() << "Validating whether resources stored as .zip are in the right place";
+    for (auto [fileName, targetFolder] : m_ZIP_resources) {
+        qDebug() << "Checking" << fileName << "...";
+        auto localPath = FS::PathCombine(m_stagingPath, "minecraft", targetFolder, fileName);
+
+        /// @brief check the target and move the the file
+        /// @return path where file can now be found
+        auto validatePath = [&localPath, this](QString fileName, QString targetFolder, QString realTarget) {
+            if (targetFolder != realTarget) {
+                qDebug() << "Target folder of" << fileName << "is incorrect, it belongs in" << realTarget;
+                auto destPath = FS::PathCombine(m_stagingPath, "minecraft", realTarget, fileName);
+                qDebug() << "Moving" << localPath << "to" << destPath;
+                if (FS::move(localPath, destPath)) {
+                    return destPath;
+                }
+            }
+            return localPath;
+        };
+
+        auto installWorld = [this](QString worldPath){
+            qDebug() << "Installing World from" << worldPath;
+            QFileInfo worldFileInfo(worldPath);
+            World w(worldFileInfo);
+            if (!w.isValid()) {
+                qDebug() << "World at" << worldPath << "is not valid, skipping install.";
+            } else {
+                w.install(FS::PathCombine(m_stagingPath, "minecraft", "saves"));
+            }
+        };
+
+        QFileInfo localFileInfo(localPath);
+        auto type = ResourceUtils::identify(localFileInfo);
+
+        QString worldPath;
+
+        switch (type) {
+            case PackedResourceType::ResourcePack :
+                validatePath(fileName, targetFolder, "resourcepacks");
+                break;
+            case PackedResourceType::TexturePack :
+                validatePath(fileName, targetFolder, "texturepacks");
+                break;
+            case PackedResourceType::DataPack :
+                validatePath(fileName, targetFolder, "datapacks");
+                break;
+            case PackedResourceType::Mod :
+                validatePath(fileName, targetFolder, "mods");
+                break;
+            case PackedResourceType::ShaderPack :
+                // in theroy flame API can't do this but who knows, that *may* change ?
+                // better to handle it if it *does* occure in the future
+                validatePath(fileName, targetFolder, "shaderpacks");
+                break;
+            case PackedResourceType::WorldSave :
+                worldPath = validatePath(fileName, targetFolder, "saves");
+                installWorld(worldPath);
+                break;
+            case PackedResourceType::UNKNOWN :
+            default :
+                qDebug() << "Can't Identify" << fileName << "at" << localPath << ", leaving it where it is.";
+                break;
+        }
+    }
+}
diff --git a/launcher/modplatform/flame/FlameInstanceCreationTask.h b/launcher/modplatform/flame/FlameInstanceCreationTask.h
index 3a1c729f..498e1d6e 100644
--- a/launcher/modplatform/flame/FlameInstanceCreationTask.h
+++ b/launcher/modplatform/flame/FlameInstanceCreationTask.h
@@ -77,6 +77,7 @@ class FlameCreationTask final : public InstanceCreationTask {
     void idResolverSucceeded(QEventLoop&);
     void setupDownloadJob(QEventLoop&);
     void copyBlockedMods(QList<BlockedMod> const& blocked_mods);
+    void validateZIPResouces();
 
    private:
     QWidget* m_parent = nullptr;
@@ -90,5 +91,7 @@ class FlameCreationTask final : public InstanceCreationTask {
 
     QString m_managed_id, m_managed_version_id;
 
+    QList<std::pair<QString, QString>> m_ZIP_resources;
+
     std::optional<InstancePtr> m_instance;
 };
diff --git a/launcher/modplatform/technic/TechnicPackProcessor.cpp b/launcher/modplatform/technic/TechnicPackProcessor.cpp
index 95feb4b2..df713a72 100644
--- a/launcher/modplatform/technic/TechnicPackProcessor.cpp
+++ b/launcher/modplatform/technic/TechnicPackProcessor.cpp
@@ -172,7 +172,7 @@ void Technic::TechnicPackProcessor::run(SettingsObjectPtr globalSettings, const
             auto libraryObject = Json::ensureObject(library, {}, "");
             auto libraryName = Json::ensureString(libraryObject, "name", "", "");
 
-            if (libraryName.startsWith("net.minecraftforge:forge:") && libraryName.contains('-'))
+            if ((libraryName.startsWith("net.minecraftforge:forge:")  || libraryName.startsWith("net.minecraftforge:fmlloader:")) && libraryName.contains('-'))
             {
                 QString libraryVersion = libraryName.section(':', 2);
                 if (!libraryVersion.startsWith("1.7.10-"))
diff --git a/launcher/resources/backgrounds/backgrounds.qrc b/launcher/resources/backgrounds/backgrounds.qrc
index e55faf15..e63a25b5 100644
--- a/launcher/resources/backgrounds/backgrounds.qrc
+++ b/launcher/resources/backgrounds/backgrounds.qrc
@@ -13,5 +13,17 @@
         <file alias="rory-flat-xmas">rory-flat-xmas.png</file>
         <file alias="rory-flat-bday">rory-flat-bday.png</file>
         <file alias="rory-flat-spooky">rory-flat-spooky.png</file>
+        <!-- teawie images -->
+        <!-- copyright (c) SympathyTea 2023 -->
+        <!-- these are licensed under the CC BY-SA 4.0 and have been unmodified aside from downscaling -->
+        <!-- the full license with appropriate notices is avalible at https://creativecommons.org/licenses/by-sa/4.0/ -->
+        <file alias="teawie">teawie.png</file>
+        <!-- https://commons.wikimedia.org/wiki/File:Teawie.png -->
+        <file alias="teawie-xmas">teawie-xmas.png</file>
+        <!-- https://commons.wikimedia.org/wiki/File:Teawie_Holiday.png -->
+        <file alias="teawie-bday">teawie-bday.png</file>
+        <!-- https://commons.wikimedia.org/wiki/File:Teawie_Party.png -->
+        <file alias="teawie-spooky">teawie-spooky.png</file>
+        <!-- https://commons.wikimedia.org/wiki/File:Teawie_Halloween.png -->
     </qresource>
 </RCC>
diff --git a/launcher/resources/backgrounds/teawie-bday.png b/launcher/resources/backgrounds/teawie-bday.png
new file mode 100644
index 00000000..f4ecf247
--- /dev/null
+++ b/launcher/resources/backgrounds/teawie-bday.png
diff --git a/launcher/resources/backgrounds/teawie-spooky.png b/launcher/resources/backgrounds/teawie-spooky.png
new file mode 100644
index 00000000..cefc6c85
--- /dev/null
+++ b/launcher/resources/backgrounds/teawie-spooky.png
diff --git a/launcher/resources/backgrounds/teawie-xmas.png b/launcher/resources/backgrounds/teawie-xmas.png
new file mode 100644
index 00000000..55fb7cfc
--- /dev/null
+++ b/launcher/resources/backgrounds/teawie-xmas.png
diff --git a/launcher/resources/backgrounds/teawie.png b/launcher/resources/backgrounds/teawie.png
new file mode 100644
index 00000000..dc32c51f
--- /dev/null
+++ b/launcher/resources/backgrounds/teawie.png
diff --git a/launcher/ui/MainWindow.cpp b/launcher/ui/MainWindow.cpp
index e913849d..ab80fb80 100644
--- a/launcher/ui/MainWindow.cpp
+++ b/launcher/ui/MainWindow.cpp
@@ -111,6 +111,7 @@
 #include "ui/dialogs/ExportInstanceDialog.h"
 #include "ui/dialogs/ImportResourcePackDialog.h"
 #include "ui/themes/ITheme.h"
+#include "ui/themes/ThemeManager.h"
 
 #include <minecraft/mod/ResourcePackFolderModel.h>
 #include <minecraft/mod/tasks/LocalResourcePackParseTask.h>
@@ -1346,7 +1347,7 @@ void MainWindow::updateThemeMenu()
         themeAction->setActionGroup(themesGroup);
 
         connect(themeAction, &QAction::triggered, [theme]() {
-            APPLICATION->setApplicationTheme(theme->id(),false);
+            APPLICATION->setApplicationTheme(theme->id());
             APPLICATION->settings()->set("ApplicationTheme", theme->id());
         });
     }
@@ -1652,32 +1653,9 @@ void MainWindow::onCatToggled(bool state)
     APPLICATION->settings()->set("TheCat", state);
 }
 
-namespace {
-template <typename T>
-T non_stupid_abs(T in)
-{
-    if (in < 0)
-        return -in;
-    return in;
-}
-}
-
 void MainWindow::setCatBackground(bool enabled)
 {
-    if (enabled)
-    {
-        QDateTime now = QDateTime::currentDateTime();
-        QDateTime birthday(QDate(now.date().year(), 11, 30), QTime(0, 0));
-        QDateTime xmas(QDate(now.date().year(), 12, 25), QTime(0, 0));
-        QDateTime halloween(QDate(now.date().year(), 10, 31), QTime(0, 0));
-        QString cat = APPLICATION->settings()->get("BackgroundCat").toString();
-        if (non_stupid_abs(now.daysTo(xmas)) <= 4) {
-            cat += "-xmas";
-        } else if (non_stupid_abs(now.daysTo(halloween)) <= 4) {
-            cat += "-spooky";
-        } else if (non_stupid_abs(now.daysTo(birthday)) <= 12) {
-            cat += "-bday";
-        }
+    if (enabled) {
         view->setStyleSheet(QString(R"(
 InstanceView
 {
@@ -1688,10 +1666,8 @@ InstanceView
     background-repeat: none;
     background-color:palette(base);
 })")
-                                .arg(cat));
-    }
-    else
-    {
+                                .arg(ThemeManager::getCatImage()));
+    } else {
         view->setStyleSheet(QString());
     }
 }
diff --git a/launcher/ui/WinDarkmode.cpp b/launcher/ui/WinDarkmode.cpp
deleted file mode 100644
index eac68e4f..00000000
--- a/launcher/ui/WinDarkmode.cpp
+++ /dev/null
@@ -1,32 +0,0 @@
-#include <QWidget>
-
-#include "WinDarkmode.h"
-
-namespace WinDarkmode {
-
-/* See https://github.com/statiolake/neovim-qt/commit/da8eaba7f0e38b6b51f3bacd02a8cc2d1f7a34d8 */
-void setDarkWinTitlebar(WId winid, bool darkmode)
-{
-    HWND hwnd = reinterpret_cast<HWND>(winid);
-    BOOL dark = (BOOL) darkmode;
-
-    HMODULE hUxtheme = LoadLibraryExW(L"uxtheme.dll", NULL, LOAD_LIBRARY_SEARCH_SYSTEM32);
-    HMODULE hUser32 = GetModuleHandleW(L"user32.dll");
-    fnAllowDarkModeForWindow AllowDarkModeForWindow
-        = reinterpret_cast<fnAllowDarkModeForWindow>(GetProcAddress(hUxtheme, MAKEINTRESOURCEA(133)));
-    fnSetPreferredAppMode SetPreferredAppMode
-        = reinterpret_cast<fnSetPreferredAppMode>(GetProcAddress(hUxtheme, MAKEINTRESOURCEA(135)));
-    fnSetWindowCompositionAttribute SetWindowCompositionAttribute
-        = reinterpret_cast<fnSetWindowCompositionAttribute>(GetProcAddress(hUser32, "SetWindowCompositionAttribute"));
-
-    SetPreferredAppMode(AllowDark);
-    AllowDarkModeForWindow(hwnd, dark);
-    WINDOWCOMPOSITIONATTRIBDATA data = {
-        WCA_USEDARKMODECOLORS,
-        &dark,
-        sizeof(dark)
-    };
-    SetWindowCompositionAttribute(hwnd, &data);
-}
-
-}
diff --git a/launcher/ui/WinDarkmode.h b/launcher/ui/WinDarkmode.h
deleted file mode 100644
index 5b567c6b..00000000
--- a/launcher/ui/WinDarkmode.h
+++ /dev/null
@@ -1,60 +0,0 @@
-#pragma once
-
-#include <windows.h>
-#include <dwmapi.h>
-
-
-namespace WinDarkmode {
-
-void setDarkWinTitlebar(WId winid, bool darkmode);
-
-enum PreferredAppMode {
-    Default,
-    AllowDark,
-    ForceDark,
-    ForceLight,
-    Max
-};
-
-enum WINDOWCOMPOSITIONATTRIB {
-    WCA_UNDEFINED = 0,
-    WCA_NCRENDERING_ENABLED = 1,
-    WCA_NCRENDERING_POLICY = 2,
-    WCA_TRANSITIONS_FORCEDISABLED = 3,
-    WCA_ALLOW_NCPAINT = 4,
-    WCA_CAPTION_BUTTON_BOUNDS = 5,
-    WCA_NONCLIENT_RTL_LAYOUT = 6,
-    WCA_FORCE_ICONIC_REPRESENTATION = 7,
-    WCA_EXTENDED_FRAME_BOUNDS = 8,
-    WCA_HAS_ICONIC_BITMAP = 9,
-    WCA_THEME_ATTRIBUTES = 10,
-    WCA_NCRENDERING_EXILED = 11,
-    WCA_NCADORNMENTINFO = 12,
-    WCA_EXCLUDED_FROM_LIVEPREVIEW = 13,
-    WCA_VIDEO_OVERLAY_ACTIVE = 14,
-    WCA_FORCE_ACTIVEWINDOW_APPEARANCE = 15,
-    WCA_DISALLOW_PEEK = 16,
-    WCA_CLOAK = 17,
-    WCA_CLOAKED = 18,
-    WCA_ACCENT_POLICY = 19,
-    WCA_FREEZE_REPRESENTATION = 20,
-    WCA_EVER_UNCLOAKED = 21,
-    WCA_VISUAL_OWNER = 22,
-    WCA_HOLOGRAPHIC = 23,
-    WCA_EXCLUDED_FROM_DDA = 24,
-    WCA_PASSIVEUPDATEMODE = 25,
-    WCA_USEDARKMODECOLORS = 26,
-    WCA_LAST = 27
-};
-
-struct WINDOWCOMPOSITIONATTRIBDATA {
-    WINDOWCOMPOSITIONATTRIB Attrib;
-    PVOID pvData;
-    SIZE_T cbData;
-};
-
-using fnAllowDarkModeForWindow =  BOOL (WINAPI *)(HWND hWnd, BOOL allow);
-using fnSetPreferredAppMode = PreferredAppMode (WINAPI *)(PreferredAppMode appMode);
-using fnSetWindowCompositionAttribute =  BOOL (WINAPI *)(HWND hwnd, WINDOWCOMPOSITIONATTRIBDATA *);
-
-}
diff --git a/launcher/ui/pages/global/LauncherPage.cpp b/launcher/ui/pages/global/LauncherPage.cpp
index cae0635f..69a8e3df 100644
--- a/launcher/ui/pages/global/LauncherPage.cpp
+++ b/launcher/ui/pages/global/LauncherPage.cpp
@@ -286,72 +286,6 @@ void LauncherPage::applySettings()
     }
 
     s->set("UpdateChannel", m_currentUpdateChannel);
-    auto original = s->get("IconTheme").toString();
-    //FIXME: make generic
-    switch (ui->themeComboBox->currentIndex())
-    {
-    case 0:
-        s->set("IconTheme", "pe_colored");
-        break;
-    case 1:
-        s->set("IconTheme", "pe_light");
-        break;
-    case 2:
-        s->set("IconTheme", "pe_dark");
-        break;
-    case 3:
-        s->set("IconTheme", "pe_blue");
-        break;
-    case 4:
-        s->set("IconTheme", "breeze_light");
-        break;
-    case 5:
-        s->set("IconTheme", "breeze_dark");
-        break;
-    case 6:
-        s->set("IconTheme", "OSX");
-        break;
-    case 7:
-        s->set("IconTheme", "iOS");
-        break;
-    case 8:
-        s->set("IconTheme", "flat");
-        break;
-    case 9:
-        s->set("IconTheme", "flat_white");
-        break;
-    case 10:
-        s->set("IconTheme", "multimc");
-        break;
-    case 11:
-        s->set("IconTheme", "custom");
-        break;
-    }
-
-    if(original != s->get("IconTheme"))
-    {
-        APPLICATION->setIconTheme(s->get("IconTheme").toString());
-    }
-
-    auto originalAppTheme = s->get("ApplicationTheme").toString();
-    auto newAppTheme = ui->themeComboBoxColors->currentData().toString();
-    if(originalAppTheme != newAppTheme)
-    {
-        s->set("ApplicationTheme", newAppTheme);
-        APPLICATION->setApplicationTheme(newAppTheme, false);
-    }
-
-    switch (ui->themeBackgroundCat->currentIndex()) {
-    case 0: // original cat
-        s->set("BackgroundCat", "kitteh");
-        break;
-    case 1: // rory the cat
-        s->set("BackgroundCat", "rory");
-        break;
-    case 2: // rory the cat flat edition
-        s->set("BackgroundCat", "rory-flat");
-        break;
-    }
 
     s->set("MenuBarInsteadOfToolBar", ui->preferMenuBarCheckBox->isChecked());
 
@@ -401,45 +335,6 @@ void LauncherPage::loadSettings()
     }
 
     m_currentUpdateChannel = s->get("UpdateChannel").toString();
-    //FIXME: make generic
-    auto theme = s->get("IconTheme").toString();
-    QStringList iconThemeOptions{"pe_colored", 
-                                 "pe_light", 
-                                 "pe_dark", 
-                                 "pe_blue", 
-                                 "breeze_light", 
-                                 "breeze_dark", 
-                                 "OSX", 
-                                 "iOS", 
-                                 "flat", 
-                                 "flat_white", 
-                                 "multimc", 
-                                 "custom"};
-    ui->themeComboBox->setCurrentIndex(iconThemeOptions.indexOf(theme));
-
-    auto cat = s->get("BackgroundCat").toString();
-    if (cat == "kitteh") {
-        ui->themeBackgroundCat->setCurrentIndex(0);
-    } else if (cat == "rory") {
-        ui->themeBackgroundCat->setCurrentIndex(1);
-    } else if (cat == "rory-flat") {
-        ui->themeBackgroundCat->setCurrentIndex(2);
-    }
-
-    {
-        auto currentTheme = s->get("ApplicationTheme").toString();
-        auto themes = APPLICATION->getValidApplicationThemes();
-        int idx = 0;
-        for(auto &theme: themes)
-        {
-            ui->themeComboBoxColors->addItem(theme->name(), theme->id());
-            if(currentTheme == theme->id())
-            {
-                ui->themeComboBoxColors->setCurrentIndex(idx);
-            }
-            idx++;
-        }
-    }
 
     // Toolbar/menu bar settings (not applicable if native menu bar is present)
     ui->toolsBox->setEnabled(!QMenuBar().isNativeMenuBar());
diff --git a/launcher/ui/pages/global/LauncherPage.ui b/launcher/ui/pages/global/LauncherPage.ui
index c44718a1..65f4a9d5 100644
--- a/launcher/ui/pages/global/LauncherPage.ui
+++ b/launcher/ui/pages/global/LauncherPage.ui
@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>514</width>
+    <width>511</width>
     <height>629</height>
    </rect>
   </property>
@@ -38,7 +38,7 @@
       <enum>QTabWidget::Rounded</enum>
      </property>
      <property name="currentIndex">
-      <number>0</number>
+      <number>1</number>
      </property>
      <widget class="QWidget" name="featuresTab">
       <attribute name="title">
@@ -243,150 +243,9 @@
          <property name="title">
           <string>Theme</string>
          </property>
-         <layout class="QFormLayout" name="formLayout">
-          <item row="0" column="0">
-           <widget class="QLabel" name="label_3">
-            <property name="text">
-             <string>&amp;Icons</string>
-            </property>
-            <property name="buddy">
-             <cstring>themeComboBox</cstring>
-            </property>
-           </widget>
-          </item>
-          <item row="0" column="1">
-           <widget class="QComboBox" name="themeComboBox">
-            <property name="sizePolicy">
-             <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
-              <horstretch>0</horstretch>
-              <verstretch>0</verstretch>
-             </sizepolicy>
-            </property>
-            <property name="focusPolicy">
-             <enum>Qt::StrongFocus</enum>
-            </property>
-            <item>
-             <property name="text">
-              <string>Simple (Colored Icons)</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string>Simple (Light Icons)</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string>Simple (Dark Icons)</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string>Simple (Blue Icons)</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string>Breeze Light</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string>Breeze Dark</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string notr="true">OSX</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string notr="true">iOS</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string>Flat</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string>Flat (White)</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string>Legacy</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string>Custom</string>
-             </property>
-            </item>
-           </widget>
-          </item>
-          <item row="1" column="0">
-           <widget class="QLabel" name="label_4">
-            <property name="text">
-             <string>&amp;Colors</string>
-            </property>
-            <property name="buddy">
-             <cstring>themeComboBoxColors</cstring>
-            </property>
-           </widget>
-          </item>
-          <item row="1" column="1">
-           <widget class="QComboBox" name="themeComboBoxColors">
-            <property name="sizePolicy">
-             <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
-              <horstretch>0</horstretch>
-              <verstretch>0</verstretch>
-             </sizepolicy>
-            </property>
-            <property name="focusPolicy">
-             <enum>Qt::StrongFocus</enum>
-            </property>
-           </widget>
-          </item>
-          <item row="2" column="0">
-           <widget class="QLabel" name="label_5">
-            <property name="text">
-             <string>C&amp;at</string>
-            </property>
-            <property name="buddy">
-             <cstring>themeBackgroundCat</cstring>
-            </property>
-           </widget>
-          </item>
-          <item row="2" column="1">
-           <widget class="QComboBox" name="themeBackgroundCat">
-            <property name="sizePolicy">
-             <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
-              <horstretch>0</horstretch>
-              <verstretch>0</verstretch>
-             </sizepolicy>
-            </property>
-            <property name="focusPolicy">
-             <enum>Qt::StrongFocus</enum>
-            </property>
-            <item>
-             <property name="text">
-              <string>Background Cat (from MultiMC)</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string>Rory ID 11 (drawn by Ashtaka)</string>
-             </property>
-            </item>
-            <item>
-             <property name="text">
-              <string>Rory ID 11 (flat edition, drawn by Ashtaka)</string>
-             </property>
-            </item>
-           </widget>
+         <layout class="QVBoxLayout" name="verticalLayout_5">
+          <item>
+           <widget class="ThemeCustomizationWidget" name="themeCustomizationWidget" native="true"/>
           </item>
          </layout>
         </widget>
@@ -570,6 +429,14 @@
    </item>
   </layout>
  </widget>
+ <customwidgets>
+  <customwidget>
+   <class>ThemeCustomizationWidget</class>
+   <extends>QWidget</extends>
+   <header>ui/widgets/ThemeCustomizationWidget.h</header>
+   <container>1</container>
+  </customwidget>
+ </customwidgets>
  <tabstops>
   <tabstop>tabWidget</tabstop>
   <tabstop>autoUpdateCheckBox</tabstop>
@@ -582,8 +449,6 @@
   <tabstop>iconsDirBrowseBtn</tabstop>
   <tabstop>sortLastLaunchedBtn</tabstop>
   <tabstop>sortByNameBtn</tabstop>
-  <tabstop>themeComboBox</tabstop>
-  <tabstop>themeComboBoxColors</tabstop>
   <tabstop>showConsoleCheck</tabstop>
   <tabstop>autoCloseConsoleCheck</tabstop>
   <tabstop>showConsoleErrorCheck</tabstop>
diff --git a/launcher/ui/pages/modplatform/ModPage.cpp b/launcher/ui/pages/modplatform/ModPage.cpp
index 677bc4d6..75be25b2 100644
--- a/launcher/ui/pages/modplatform/ModPage.cpp
+++ b/launcher/ui/pages/modplatform/ModPage.cpp
@@ -428,6 +428,10 @@ void ModPage::updateUi()
     text += "<hr>";
 
     HoeDown h;
+
+    // hoedown bug: it doesn't handle markdown surrounded by block tags (like center, div) so strip them
+    current.extraData.body.remove(QRegularExpression("<[^>]*(?:center|div)\\W*>"));
+
     ui->packDescription->setHtml(text + (current.extraData.body.isEmpty() ? current.description : h.process(current.extraData.body.toUtf8())));
     ui->packDescription->flush();
 }
diff --git a/launcher/ui/setupwizard/SetupWizard.cpp b/launcher/ui/setupwizard/SetupWizard.cpp
index 3c8b5d39..3fd9bb23 100644
--- a/launcher/ui/setupwizard/SetupWizard.cpp
+++ b/launcher/ui/setupwizard/SetupWizard.cpp
@@ -13,7 +13,8 @@
 SetupWizard::SetupWizard(QWidget *parent) : QWizard(parent)
 {
     setObjectName(QStringLiteral("SetupWizard"));
-    resize(615, 659);
+    resize(620, 660);
+    setMinimumSize(300, 400);
     // make it ugly everywhere to avoid variability in theming
     setWizardStyle(QWizard::ClassicStyle);
     setOptions(QWizard::NoCancelButton | QWizard::IndependentPages | QWizard::HaveCustomButton1);
diff --git a/launcher/ui/setupwizard/ThemeWizardPage.cpp b/launcher/ui/setupwizard/ThemeWizardPage.cpp
new file mode 100644
index 00000000..42826aba
--- /dev/null
+++ b/launcher/ui/setupwizard/ThemeWizardPage.cpp
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Tayou <tayou@gmx.net>
+ *
+ *  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 "ThemeWizardPage.h"
+#include "ui_ThemeWizardPage.h"
+
+#include "Application.h"
+#include "ui/themes/ITheme.h"
+#include "ui/themes/ThemeManager.h"
+#include "ui/widgets/ThemeCustomizationWidget.h"
+#include "ui_ThemeCustomizationWidget.h"
+
+ThemeWizardPage::ThemeWizardPage(QWidget* parent) : BaseWizardPage(parent), ui(new Ui::ThemeWizardPage)
+{
+    ui->setupUi(this);
+
+    connect(ui->themeCustomizationWidget, &ThemeCustomizationWidget::currentIconThemeChanged, this, &ThemeWizardPage::updateIcons);
+    connect(ui->themeCustomizationWidget, &ThemeCustomizationWidget::currentCatChanged, this, &ThemeWizardPage::updateCat);
+
+    updateIcons();
+    updateCat();
+}
+
+ThemeWizardPage::~ThemeWizardPage()
+{
+    delete ui;
+}
+
+void ThemeWizardPage::updateIcons()
+{
+    qDebug() << "Setting Icons";
+    ui->previewIconButton0->setIcon(APPLICATION->getThemedIcon("new"));
+    ui->previewIconButton1->setIcon(APPLICATION->getThemedIcon("centralmods"));
+    ui->previewIconButton2->setIcon(APPLICATION->getThemedIcon("viewfolder"));
+    ui->previewIconButton3->setIcon(APPLICATION->getThemedIcon("launch"));
+    ui->previewIconButton4->setIcon(APPLICATION->getThemedIcon("copy"));
+    ui->previewIconButton5->setIcon(APPLICATION->getThemedIcon("export"));
+    ui->previewIconButton6->setIcon(APPLICATION->getThemedIcon("delete"));
+    ui->previewIconButton7->setIcon(APPLICATION->getThemedIcon("about"));
+    ui->previewIconButton8->setIcon(APPLICATION->getThemedIcon("settings"));
+    ui->previewIconButton9->setIcon(APPLICATION->getThemedIcon("cat"));
+    update();
+    repaint();
+    parentWidget()->update();
+}
+
+void ThemeWizardPage::updateCat()
+{
+    qDebug() << "Setting Cat";
+    ui->catImagePreviewButton->setIcon(QIcon(QString(R"(:/backgrounds/%1)").arg(ThemeManager::getCatImage())));
+}
+
+void ThemeWizardPage::retranslate()
+{
+    ui->retranslateUi(this);
+}
diff --git a/launcher/ui/setupwizard/ThemeWizardPage.h b/launcher/ui/setupwizard/ThemeWizardPage.h
new file mode 100644
index 00000000..61a3d0c0
--- /dev/null
+++ b/launcher/ui/setupwizard/ThemeWizardPage.h
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Tayou <tayou@gmx.net>
+ *
+ *  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 <QWidget>
+#include "BaseWizardPage.h"
+
+namespace Ui {
+class ThemeWizardPage;
+}
+
+class ThemeWizardPage : public BaseWizardPage {
+    Q_OBJECT
+
+   public:
+    explicit ThemeWizardPage(QWidget* parent = nullptr);
+    ~ThemeWizardPage();
+
+    bool validatePage() override { return true; };
+    void retranslate() override;
+
+   private slots:
+    void updateIcons();
+    void updateCat();
+
+   private:
+    Ui::ThemeWizardPage* ui;
+};
diff --git a/launcher/ui/setupwizard/ThemeWizardPage.ui b/launcher/ui/setupwizard/ThemeWizardPage.ui
new file mode 100644
index 00000000..01394ea4
--- /dev/null
+++ b/launcher/ui/setupwizard/ThemeWizardPage.ui
@@ -0,0 +1,371 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>ThemeWizardPage</class>
+ <widget class="QWizardPage" name="ThemeWizardPage">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>510</width>
+    <height>552</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>WizardPage</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>Select the Theme you wish to use</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="ThemeCustomizationWidget" name="themeCustomizationWidget" native="true">
+     <property name="minimumSize">
+      <size>
+       <width>0</width>
+       <height>100</height>
+      </size>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="label_2">
+     <property name="text">
+      <string>Hint: The cat appears in the background and is not shown by default. It is only made visible when pressing the Cat button in the Toolbar.</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="Line" name="line">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="label_4">
+     <property name="text">
+      <string> Preview:</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QGridLayout" name="iconPreview">
+     <item row="0" column="2">
+      <widget class="QPushButton" name="previewIconButton2">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="icon">
+        <iconset theme="applications-engineering">
+         <normaloff>.</normaloff>.</iconset>
+       </property>
+       <property name="checkable">
+        <bool>false</bool>
+       </property>
+       <property name="flat">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="5">
+      <widget class="QPushButton" name="previewIconButton5">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="icon">
+        <iconset theme="applications-engineering">
+         <normaloff>.</normaloff>.</iconset>
+       </property>
+       <property name="checkable">
+        <bool>false</bool>
+       </property>
+       <property name="flat">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="7">
+      <widget class="QPushButton" name="previewIconButton7">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="icon">
+        <iconset theme="applications-engineering">
+         <normaloff>.</normaloff>.</iconset>
+       </property>
+       <property name="checkable">
+        <bool>false</bool>
+       </property>
+       <property name="flat">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="4">
+      <widget class="QPushButton" name="previewIconButton4">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="icon">
+        <iconset theme="applications-engineering">
+         <normaloff>.</normaloff>.</iconset>
+       </property>
+       <property name="checkable">
+        <bool>false</bool>
+       </property>
+       <property name="flat">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="1">
+      <widget class="QPushButton" name="previewIconButton1">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="icon">
+        <iconset theme="centralmods">
+         <normaloff>.</normaloff>.</iconset>
+       </property>
+       <property name="checkable">
+        <bool>false</bool>
+       </property>
+       <property name="flat">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="0">
+      <widget class="QPushButton" name="previewIconButton0">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="icon">
+        <iconset theme="applications-engineering">
+         <normaloff>.</normaloff>.</iconset>
+       </property>
+       <property name="checkable">
+        <bool>false</bool>
+       </property>
+       <property name="flat">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="9">
+      <widget class="QPushButton" name="previewIconButton9">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="icon">
+        <iconset theme="viewfolder">
+         <normaloff>.</normaloff>.</iconset>
+       </property>
+       <property name="checkable">
+        <bool>false</bool>
+       </property>
+       <property name="flat">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="6">
+      <widget class="QPushButton" name="previewIconButton6">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="icon">
+        <iconset theme="new">
+         <normaloff>.</normaloff>.</iconset>
+       </property>
+       <property name="checkable">
+        <bool>false</bool>
+       </property>
+       <property name="flat">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="3">
+      <widget class="QPushButton" name="previewIconButton3">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="icon">
+        <iconset theme="applications-engineering">
+         <normaloff>.</normaloff>.</iconset>
+       </property>
+       <property name="checkable">
+        <bool>false</bool>
+       </property>
+       <property name="flat">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="8">
+      <widget class="QPushButton" name="previewIconButton8">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="icon">
+        <iconset theme="applications-engineering">
+         <normaloff>.</normaloff>.</iconset>
+       </property>
+       <property name="checkable">
+        <bool>false</bool>
+       </property>
+       <property name="flat">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QPushButton" name="catImagePreviewButton">
+     <property name="minimumSize">
+      <size>
+       <width>0</width>
+       <height>256</height>
+      </size>
+     </property>
+     <property name="toolTip">
+      <string>The cat appears in the background and does not serve a purpose, it is purely visual.</string>
+     </property>
+     <property name="text">
+      <string/>
+     </property>
+     <property name="iconSize">
+      <size>
+       <width>256</width>
+       <height>256</height>
+      </size>
+     </property>
+     <property name="flat">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>193</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+  </layout>
+ </widget>
+ <customwidgets>
+  <customwidget>
+   <class>ThemeCustomizationWidget</class>
+   <extends>QWidget</extends>
+   <header>ui/widgets/ThemeCustomizationWidget.h</header>
+  </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/launcher/ui/themes/CustomTheme.cpp b/launcher/ui/themes/CustomTheme.cpp
index 3ad61668..198e76ba 100644
--- a/launcher/ui/themes/CustomTheme.cpp
+++ b/launcher/ui/themes/CustomTheme.cpp
@@ -167,8 +167,6 @@ CustomTheme::CustomTheme(ITheme* baseTheme, QFileInfo& fileInfo, bool isManifest
 
         if (!FS::ensureFolderPathExists(path) || !FS::ensureFolderPathExists(pathResources)) {
             themeWarningLog() << "couldn't create folder for theme!";
-            m_palette = baseTheme->colorScheme();
-            m_styleSheet = baseTheme->appStyleSheet();
             return;
         }
 
@@ -177,18 +175,15 @@ CustomTheme::CustomTheme(ITheme* baseTheme, QFileInfo& fileInfo, bool isManifest
         bool jsonDataIncomplete = false;
 
         m_palette = baseTheme->colorScheme();
-        if (!readThemeJson(themeFilePath, m_palette, m_fadeAmount, m_fadeColor, m_name, m_widgets, m_qssFilePath, jsonDataIncomplete)) {
-            themeDebugLog() << "Did not read theme json file correctly, writing new one to: " << themeFilePath;
-            m_name = "Custom";
-            m_palette = baseTheme->colorScheme();
-            m_fadeColor = baseTheme->fadeColor();
-            m_fadeAmount = baseTheme->fadeAmount();
-            m_widgets = baseTheme->qtTheme();
-            m_qssFilePath = "themeStyle.css";
-        } else {
+        if (readThemeJson(themeFilePath, m_palette, m_fadeAmount, m_fadeColor, m_name, m_widgets, m_qssFilePath, jsonDataIncomplete)) {
+            // If theme data was found, fade "Disabled" color of each role according to FadeAmount
             m_palette = fadeInactive(m_palette, m_fadeAmount, m_fadeColor);
+        } else {
+            themeDebugLog() << "Did not read theme json file correctly, not changing theme, keeping previous.";
+            return;
         }
 
+        // FIXME: This is kinda jank, it only actually checks if the qss file path is not present. It should actually check for any relevant missing data (e.g. name, colors)
         if (jsonDataIncomplete) {
             writeThemeJson(fileInfo.absoluteFilePath(), m_palette, m_fadeAmount, m_fadeColor, m_name, m_widgets, m_qssFilePath);
         }
@@ -197,20 +192,14 @@ CustomTheme::CustomTheme(ITheme* baseTheme, QFileInfo& fileInfo, bool isManifest
         QFileInfo info(qssFilePath);
         if (info.isFile()) {
             try {
-                // TODO: validate css?
+                // TODO: validate qss?
                 m_styleSheet = QString::fromUtf8(FS::read(qssFilePath));
             } catch (const Exception& e) {
-                themeWarningLog() << "Couldn't load css:" << e.cause() << "from" << qssFilePath;
-                m_styleSheet = baseTheme->appStyleSheet();
+                themeWarningLog() << "Couldn't load qss:" << e.cause() << "from" << qssFilePath;
+                return;
             }
         } else {
-            themeDebugLog() << "No theme css present.";
-            m_styleSheet = baseTheme->appStyleSheet();
-            try {
-                FS::write(qssFilePath, m_styleSheet.toUtf8());
-            } catch (const Exception& e) {
-                themeWarningLog() << "Couldn't write css:" << e.cause() << "to" << qssFilePath;
-            }
+            themeDebugLog() << "No theme qss present.";
         }
     } else {
         m_id = fileInfo.fileName();
diff --git a/launcher/ui/themes/ITheme.cpp b/launcher/ui/themes/ITheme.cpp
index 8bfc466d..22043e44 100644
--- a/launcher/ui/themes/ITheme.cpp
+++ b/launcher/ui/themes/ITheme.cpp
@@ -1,19 +1,51 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Tayou <tayou@gmx.net>
+ *
+ *  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/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2013-2021 MultiMC Contributors
+ *
+ *      Licensed under the Apache License, Version 2.0 (the "License");
+ *      you may not use this file except in compliance with the License.
+ *      You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *      Unless required by applicable law or agreed to in writing, software
+ *      distributed under the License is distributed on an "AS IS" BASIS,
+ *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *      See the License for the specific language governing permissions and
+ *      limitations under the License.
+ */
 #include "ITheme.h"
 #include "rainbow.h"
 #include <QStyleFactory>
 #include <QDir>
 #include "Application.h"
 
-void ITheme::apply(bool)
+void ITheme::apply()
 {
     APPLICATION->setStyleSheet(QString());
     QApplication::setStyle(QStyleFactory::create(qtTheme()));
     if (hasColorScheme()) {
         QApplication::setPalette(colorScheme());
     }
-    if (hasStyleSheet())
-        APPLICATION->setStyleSheet(appStyleSheet());
-
+    APPLICATION->setStyleSheet(appStyleSheet());
     QDir::setSearchPaths("theme", searchPaths());
 }
 
diff --git a/launcher/ui/themes/ITheme.h b/launcher/ui/themes/ITheme.h
index c2347cf6..2e5b7f25 100644
--- a/launcher/ui/themes/ITheme.h
+++ b/launcher/ui/themes/ITheme.h
@@ -1,14 +1,47 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Tayou <tayou@gmx.net>
+ *
+ *  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/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2013-2021 MultiMC Contributors
+ *
+ *      Licensed under the Apache License, Version 2.0 (the "License");
+ *      you may not use this file except in compliance with the License.
+ *      You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *      Unless required by applicable law or agreed to in writing, software
+ *      distributed under the License is distributed on an "AS IS" BASIS,
+ *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *      See the License for the specific language governing permissions and
+ *      limitations under the License.
+ */
 #pragma once
-#include <QString>
 #include <QPalette>
+#include <QString>
 
 class QStyle;
 
-class ITheme
-{
-public:
+class ITheme {
+   public:
     virtual ~ITheme() {}
-    virtual void apply(bool initial);
+    virtual void apply();
     virtual QString id() = 0;
     virtual QString name() = 0;
     virtual bool hasStyleSheet() = 0;
@@ -18,10 +51,7 @@ public:
     virtual QPalette colorScheme() = 0;
     virtual QColor fadeColor() = 0;
     virtual double fadeAmount() = 0;
-    virtual QStringList searchPaths()
-    {
-        return {};
-    }
+    virtual QStringList searchPaths() { return {}; }
 
     static QPalette fadeInactive(QPalette in, qreal bias, QColor color);
 };
diff --git a/launcher/ui/themes/SystemTheme.cpp b/launcher/ui/themes/SystemTheme.cpp
index a63d1741..24875e33 100644
--- a/launcher/ui/themes/SystemTheme.cpp
+++ b/launcher/ui/themes/SystemTheme.cpp
@@ -34,24 +34,22 @@
  */
 #include "SystemTheme.h"
 #include <QApplication>
+#include <QDebug>
 #include <QStyle>
 #include <QStyleFactory>
-#include <QDebug>
 #include "ThemeManager.h"
 
 SystemTheme::SystemTheme()
 {
     themeDebugLog() << "Determining System Theme...";
-    const auto & style = QApplication::style();
+    const auto& style = QApplication::style();
     systemPalette = style->standardPalette();
     QString lowerThemeName = style->objectName();
     themeDebugLog() << "System theme seems to be:" << lowerThemeName;
     QStringList styles = QStyleFactory::keys();
-    for(auto &st: styles)
-    {
+    for (auto& st : styles) {
         themeDebugLog() << "Considering theme from theme factory:" << st.toLower();
-        if(st.toLower() == lowerThemeName)
-        {
+        if (st.toLower() == lowerThemeName) {
             systemTheme = st;
             themeDebugLog() << "System theme has been determined to be:" << systemTheme;
             return;
@@ -62,14 +60,9 @@ SystemTheme::SystemTheme()
     themeDebugLog() << "System theme not found, defaulted to Fusion";
 }
 
-void SystemTheme::apply(bool initial)
+void SystemTheme::apply()
 {
-    // if we are applying the system theme as the first theme, just don't touch anything. it's for the better...
-    if(initial)
-    {
-        return;
-    }
-    ITheme::apply(initial);
+    ITheme::apply();
 }
 
 QString SystemTheme::id()
@@ -104,7 +97,7 @@ double SystemTheme::fadeAmount()
 
 QColor SystemTheme::fadeColor()
 {
-    return QColor(128,128,128);
+    return QColor(128, 128, 128);
 }
 
 bool SystemTheme::hasStyleSheet()
diff --git a/launcher/ui/themes/SystemTheme.h b/launcher/ui/themes/SystemTheme.h
index fe450600..b5c03def 100644
--- a/launcher/ui/themes/SystemTheme.h
+++ b/launcher/ui/themes/SystemTheme.h
@@ -1,13 +1,46 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Tayou <tayou@gmx.net>
+ *
+ *  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/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2013-2021 MultiMC Contributors
+ *
+ *      Licensed under the Apache License, Version 2.0 (the "License");
+ *      you may not use this file except in compliance with the License.
+ *      You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *      Unless required by applicable law or agreed to in writing, software
+ *      distributed under the License is distributed on an "AS IS" BASIS,
+ *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *      See the License for the specific language governing permissions and
+ *      limitations under the License.
+ */
 #pragma once
 
 #include "ITheme.h"
 
-class SystemTheme: public ITheme
-{
-public:
+class SystemTheme : public ITheme {
+   public:
     SystemTheme();
     virtual ~SystemTheme() {}
-    void apply(bool initial) override;
+    void apply() override;
 
     QString id() override;
     QString name() override;
@@ -18,7 +51,8 @@ public:
     QPalette colorScheme() override;
     double fadeAmount() override;
     QColor fadeColor() override;
-private:
+
+   private:
     QPalette systemPalette;
     QString systemTheme;
 };
diff --git a/launcher/ui/themes/ThemeManager.cpp b/launcher/ui/themes/ThemeManager.cpp
index 01a38a86..13406485 100644
--- a/launcher/ui/themes/ThemeManager.cpp
+++ b/launcher/ui/themes/ThemeManager.cpp
@@ -1,155 +1,155 @@
-// SPDX-License-Identifier: GPL-3.0-only

-/*

- *  Prism Launcher - Minecraft Launcher

- *  Copyright (C) 2022 Tayou <tayou@gmx.net>

- *

- *  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 "ThemeManager.h"

-

-#include <QApplication>

-#include <QDir>

-#include <QDirIterator>

-#include <QIcon>

-#include "ui/themes/BrightTheme.h"

-#include "ui/themes/CustomTheme.h"

-#include "ui/themes/DarkTheme.h"

-#include "ui/themes/SystemTheme.h"

-

-#include "Application.h"

-

-#ifdef Q_OS_WIN

-#include <windows.h>

-// this is needed for versionhelpers.h, it is also included in WinDarkmode, but we can't rely on that.

-// Ultimately this should be included in versionhelpers, but that is outside of the project.

-#include "ui/WinDarkmode.h"

-#include <versionhelpers.h>

-#endif

-

-ThemeManager::ThemeManager(MainWindow* mainWindow)

-{

-    m_mainWindow = mainWindow;

-    InitializeThemes();

-}

-

-/// @brief Adds the Theme to the list of themes

-/// @param theme The Theme to add

-/// @return Theme ID

-QString ThemeManager::AddTheme(std::unique_ptr<ITheme> theme)

-{

-    QString id = theme->id();

-    m_themes.emplace(id, std::move(theme));

-    return id;

-}

-

-/// @brief Gets the Theme from the List via ID

-/// @param themeId Theme ID of theme to fetch

-/// @return Theme at themeId

-ITheme* ThemeManager::GetTheme(QString themeId)

-{

-    return m_themes[themeId].get();

-}

-

-void ThemeManager::InitializeThemes()

-{

-    // Icon themes

-    {

-        // TODO: icon themes and instance icons do not mesh well together. Rearrange and fix discrepancies!

-        // set icon theme search path!

-        auto searchPaths = QIcon::themeSearchPaths();

-        searchPaths.append("iconthemes");

-        QIcon::setThemeSearchPaths(searchPaths);

-        themeDebugLog() << "<> Icon themes initialized.";

-    }

-

-    // Initialize widget themes

-    {

-        themeDebugLog() << "<> Initializing Widget Themes";

-        themeDebugLog() << "Loading Built-in Theme:" << AddTheme(std::make_unique<SystemTheme>());

-        auto darkThemeId = AddTheme(std::make_unique<DarkTheme>());

-        themeDebugLog() << "Loading Built-in Theme:" << darkThemeId;

-        themeDebugLog() << "Loading Built-in Theme:" << AddTheme(std::make_unique<BrightTheme>());

-

-        // TODO: need some way to differentiate same name themes in different subdirectories (maybe smaller grey text next to theme name in

-        // dropdown?)

-        QString themeFolder = QDir("./themes/").absoluteFilePath("");

-        themeDebugLog() << "Theme Folder Path: " << themeFolder;

-

-        QDirIterator directoryIterator(themeFolder, QDir::Dirs | QDir::NoDotAndDotDot, QDirIterator::Subdirectories);

-        while (directoryIterator.hasNext()) {

-            QDir dir(directoryIterator.next());

-            QFileInfo themeJson(dir.absoluteFilePath("theme.json"));

-            if (themeJson.exists()) {

-                // Load "theme.json" based themes

-                themeDebugLog() << "Loading JSON Theme from:" << themeJson.absoluteFilePath();

-                AddTheme(std::make_unique<CustomTheme>(GetTheme(darkThemeId), themeJson, true));

-            } else {

-                // Load pure QSS Themes

-                QDirIterator stylesheetFileIterator(dir.absoluteFilePath(""), { "*.qss", "*.css" }, QDir::Files);

-                while (stylesheetFileIterator.hasNext()) {

-                    QFile customThemeFile(stylesheetFileIterator.next());

-                    QFileInfo customThemeFileInfo(customThemeFile);

-                    themeDebugLog() << "Loading QSS Theme from:" << customThemeFileInfo.absoluteFilePath();

-                    AddTheme(std::make_unique<CustomTheme>(GetTheme(darkThemeId), customThemeFileInfo, false));

-                }

-            }

-        }

-

-        themeDebugLog() << "<> Widget themes initialized.";

-    }

-}

-

-QList<ITheme*> ThemeManager::getValidApplicationThemes()

-{

-    QList<ITheme*> ret;

-    ret.reserve(m_themes.size());

-    for (auto&& [id, theme] : m_themes) {

-        ret.append(theme.get());

-    }

-    return ret;

-}

-

-void ThemeManager::setIconTheme(const QString& name)

-{

-    QIcon::setThemeName(name);

-}

-

-void ThemeManager::applyCurrentlySelectedTheme()

-{

-    setIconTheme(APPLICATION->settings()->get("IconTheme").toString());

-    themeDebugLog() << "<> Icon theme set.";

-    setApplicationTheme(APPLICATION->settings()->get("ApplicationTheme").toString(), true);

-    themeDebugLog() << "<> Application theme set.";

-}

-

-void ThemeManager::setApplicationTheme(const QString& name, bool initial)

-{

-    auto systemPalette = qApp->palette();

-    auto themeIter = m_themes.find(name);

-    if (themeIter != m_themes.end()) {

-        auto& theme = themeIter->second;

-        themeDebugLog() << "applying theme" << theme->name();

-        theme->apply(initial);

-#ifdef Q_OS_WIN

-        if (m_mainWindow && IsWindows10OrGreater()) {

-            if (QString::compare(theme->id(), "dark") == 0) {

-                WinDarkmode::setDarkWinTitlebar(m_mainWindow->winId(), true);

-            } else {

-                WinDarkmode::setDarkWinTitlebar(m_mainWindow->winId(), false);

-            }

-        }

-#endif

-    } else {

-        themeWarningLog() << "Tried to set invalid theme:" << name;

-    }

-}

+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Tayou <tayou@gmx.net>
+ *
+ *  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 "ThemeManager.h"
+
+#include <QApplication>
+#include <QDir>
+#include <QDirIterator>
+#include <QIcon>
+#include "ui/themes/BrightTheme.h"
+#include "ui/themes/CustomTheme.h"
+#include "ui/themes/DarkTheme.h"
+#include "ui/themes/SystemTheme.h"
+
+#include "Application.h"
+
+ThemeManager::ThemeManager(MainWindow* mainWindow)
+{
+    m_mainWindow = mainWindow;
+    initializeThemes();
+}
+
+/// @brief Adds the Theme to the list of themes
+/// @param theme The Theme to add
+/// @return Theme ID
+QString ThemeManager::addTheme(std::unique_ptr<ITheme> theme)
+{
+    QString id = theme->id();
+    m_themes.emplace(id, std::move(theme));
+    return id;
+}
+
+/// @brief Gets the Theme from the List via ID
+/// @param themeId Theme ID of theme to fetch
+/// @return Theme at themeId
+ITheme* ThemeManager::getTheme(QString themeId)
+{
+    return m_themes[themeId].get();
+}
+
+void ThemeManager::initializeThemes()
+{
+    // Icon themes
+    {
+        // TODO: icon themes and instance icons do not mesh well together. Rearrange and fix discrepancies!
+        // set icon theme search path!
+        auto searchPaths = QIcon::themeSearchPaths();
+        searchPaths.append("iconthemes");
+        QIcon::setThemeSearchPaths(searchPaths);
+        themeDebugLog() << "<> Icon themes initialized.";
+    }
+
+    // Initialize widget themes
+    {
+        themeDebugLog() << "<> Initializing Widget Themes";
+        themeDebugLog() << "Loading Built-in Theme:" << addTheme(std::make_unique<SystemTheme>());
+        auto darkThemeId = addTheme(std::make_unique<DarkTheme>());
+        themeDebugLog() << "Loading Built-in Theme:" << darkThemeId;
+        themeDebugLog() << "Loading Built-in Theme:" << addTheme(std::make_unique<BrightTheme>());
+
+        // TODO: need some way to differentiate same name themes in different subdirectories (maybe smaller grey text next to theme name in
+        // dropdown?)
+        QString themeFolder = QDir("./themes/").absoluteFilePath("");
+        themeDebugLog() << "Theme Folder Path: " << themeFolder;
+
+        QDirIterator directoryIterator(themeFolder, QDir::Dirs | QDir::NoDotAndDotDot, QDirIterator::Subdirectories);
+        while (directoryIterator.hasNext()) {
+            QDir dir(directoryIterator.next());
+            QFileInfo themeJson(dir.absoluteFilePath("theme.json"));
+            if (themeJson.exists()) {
+                // Load "theme.json" based themes
+                themeDebugLog() << "Loading JSON Theme from:" << themeJson.absoluteFilePath();
+                addTheme(std::make_unique<CustomTheme>(getTheme(darkThemeId), themeJson, true));
+            } else {
+                // Load pure QSS Themes
+                QDirIterator stylesheetFileIterator(dir.absoluteFilePath(""), { "*.qss", "*.css" }, QDir::Files);
+                while (stylesheetFileIterator.hasNext()) {
+                    QFile customThemeFile(stylesheetFileIterator.next());
+                    QFileInfo customThemeFileInfo(customThemeFile);
+                    themeDebugLog() << "Loading QSS Theme from:" << customThemeFileInfo.absoluteFilePath();
+                    addTheme(std::make_unique<CustomTheme>(getTheme(darkThemeId), customThemeFileInfo, false));
+                }
+            }
+        }
+
+        themeDebugLog() << "<> Widget themes initialized.";
+    }
+}
+
+QList<ITheme*> ThemeManager::getValidApplicationThemes()
+{
+    QList<ITheme*> ret;
+    ret.reserve(m_themes.size());
+    for (auto&& [id, theme] : m_themes) {
+        ret.append(theme.get());
+    }
+    return ret;
+}
+
+void ThemeManager::setIconTheme(const QString& name)
+{
+    QIcon::setThemeName(name);
+}
+
+void ThemeManager::applyCurrentlySelectedTheme()
+{
+    setIconTheme(APPLICATION->settings()->get("IconTheme").toString());
+    themeDebugLog() << "<> Icon theme set.";
+    setApplicationTheme(APPLICATION->settings()->get("ApplicationTheme").toString());
+    themeDebugLog() << "<> Application theme set.";
+}
+
+void ThemeManager::setApplicationTheme(const QString& name)
+{
+    auto systemPalette = qApp->palette();
+    auto themeIter = m_themes.find(name);
+    if (themeIter != m_themes.end()) {
+        auto& theme = themeIter->second;
+        themeDebugLog() << "applying theme" << theme->name();
+        theme->apply();
+    } else {
+        themeWarningLog() << "Tried to set invalid theme:" << name;
+    }
+}
+
+QString ThemeManager::getCatImage(QString catName)
+{
+    QDateTime now = QDateTime::currentDateTime();
+    QDateTime birthday(QDate(now.date().year(), 11, 30), QTime(0, 0));
+    QDateTime xmas(QDate(now.date().year(), 12, 25), QTime(0, 0));
+    QDateTime halloween(QDate(now.date().year(), 10, 31), QTime(0, 0));
+    QString cat = !catName.isEmpty() ? catName : APPLICATION->settings()->get("BackgroundCat").toString();
+    if (std::abs(now.daysTo(xmas)) <= 4) {
+        cat += "-xmas";
+    } else if (std::abs(now.daysTo(halloween)) <= 4) {
+        cat += "-spooky";
+    } else if (std::abs(now.daysTo(birthday)) <= 12) {
+        cat += "-bday";
+    }
+    return cat;
+}
diff --git a/launcher/ui/themes/ThemeManager.h b/launcher/ui/themes/ThemeManager.h
index b85cb742..9af44b5a 100644
--- a/launcher/ui/themes/ThemeManager.h
+++ b/launcher/ui/themes/ThemeManager.h
@@ -1,52 +1,57 @@
-// SPDX-License-Identifier: GPL-3.0-only

-/*

- *  Prism Launcher - Minecraft Launcher

- *  Copyright (C) 2022 Tayou <tayou@gmx.net>

- *

- *  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 <QString>

-

-#include "ui/MainWindow.h"

-#include "ui/themes/ITheme.h"

-

-inline auto themeDebugLog()

-{

-    return qDebug() << "[Theme]";

-}

-inline auto themeWarningLog()

-{

-    return qWarning() << "[Theme]";

-}

-

-class ThemeManager {

-   public:

-    ThemeManager(MainWindow* mainWindow);

-

-    // maybe make private? Or put in ctor?

-    void InitializeThemes();

-

-    QList<ITheme*> getValidApplicationThemes();

-    void setIconTheme(const QString& name);

-    void applyCurrentlySelectedTheme();

-    void setApplicationTheme(const QString& name, bool initial);

-

-   private:

-    std::map<QString, std::unique_ptr<ITheme>> m_themes;

-    MainWindow* m_mainWindow;

-

-    QString AddTheme(std::unique_ptr<ITheme> theme);

-    ITheme* GetTheme(QString themeId);

-};

+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Tayou <tayou@gmx.net>
+ *
+ *  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 <QString>
+
+#include "ui/MainWindow.h"
+#include "ui/themes/ITheme.h"
+
+inline auto themeDebugLog()
+{
+    return qDebug() << "[Theme]";
+}
+inline auto themeWarningLog()
+{
+    return qWarning() << "[Theme]";
+}
+
+class ThemeManager {
+   public:
+    ThemeManager(MainWindow* mainWindow);
+
+    QList<ITheme*> getValidApplicationThemes();
+    void setIconTheme(const QString& name);
+    void applyCurrentlySelectedTheme();
+    void setApplicationTheme(const QString& name);
+
+    /// <summary>
+    /// Returns the cat based on selected cat and with events (Birthday, XMas, etc.)
+    /// </summary>
+    /// <param name="catName">Optional, if you need a specific cat.</param>
+    /// <returns></returns>
+    static QString getCatImage(QString catName = "");
+
+   private:
+    std::map<QString, std::unique_ptr<ITheme>> m_themes;
+    MainWindow* m_mainWindow;
+
+    void initializeThemes();
+    QString addTheme(std::unique_ptr<ITheme> theme);
+    ITheme* getTheme(QString themeId);
+};
diff --git a/launcher/ui/widgets/ThemeCustomizationWidget.cpp b/launcher/ui/widgets/ThemeCustomizationWidget.cpp
new file mode 100644
index 00000000..dcf13303
--- /dev/null
+++ b/launcher/ui/widgets/ThemeCustomizationWidget.cpp
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Tayou <tayou@gmx.net>
+ *
+ *  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 "ThemeCustomizationWidget.h"
+#include "ui_ThemeCustomizationWidget.h"
+
+#include "Application.h"
+#include "ui/themes/ITheme.h"
+#include "ui/themes/ThemeManager.h"
+
+ThemeCustomizationWidget::ThemeCustomizationWidget(QWidget *parent) : QWidget(parent), ui(new Ui::ThemeCustomizationWidget)
+{
+    ui->setupUi(this);
+    loadSettings();
+
+    connect(ui->iconsComboBox, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &ThemeCustomizationWidget::applyIconTheme);
+    connect(ui->widgetStyleComboBox, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &ThemeCustomizationWidget::applyWidgetTheme);
+    connect(ui->backgroundCatComboBox, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &ThemeCustomizationWidget::applyCatTheme);
+}
+
+ThemeCustomizationWidget::~ThemeCustomizationWidget()
+{
+    delete ui;
+}
+
+/// <summary>
+/// The layout was not quite right, so currently this just disables the UI elements, which should be hidden instead
+/// TODO FIXME
+/// 
+/// Original Method One:
+/// ui->iconsComboBox->setVisible(features& ThemeFields::ICONS);
+/// ui->iconsLabel->setVisible(features& ThemeFields::ICONS);
+/// ui->widgetStyleComboBox->setVisible(features& ThemeFields::WIDGETS);
+/// ui->widgetThemeLabel->setVisible(features& ThemeFields::WIDGETS);
+/// ui->backgroundCatComboBox->setVisible(features& ThemeFields::CAT);
+/// ui->backgroundCatLabel->setVisible(features& ThemeFields::CAT);
+/// 
+/// original Method Two:
+///     if (!(features & ThemeFields::ICONS)) {
+///         ui->formLayout->setRowVisible(0, false);
+///     }
+///     if (!(features & ThemeFields::WIDGETS)) {
+///         ui->formLayout->setRowVisible(1, false);
+///     }
+///     if (!(features & ThemeFields::CAT)) {
+///         ui->formLayout->setRowVisible(2, false);
+///     }
+/// </summary>
+/// <param name="features"></param>
+void ThemeCustomizationWidget::showFeatures(ThemeFields features) {
+    ui->iconsComboBox->setEnabled(features & ThemeFields::ICONS);
+    ui->iconsLabel->setEnabled(features & ThemeFields::ICONS);
+    ui->widgetStyleComboBox->setEnabled(features & ThemeFields::WIDGETS);
+    ui->widgetThemeLabel->setEnabled(features & ThemeFields::WIDGETS);
+    ui->backgroundCatComboBox->setEnabled(features & ThemeFields::CAT);
+    ui->backgroundCatLabel->setEnabled(features & ThemeFields::CAT);
+}
+
+void ThemeCustomizationWidget::applyIconTheme(int index) {
+    auto settings = APPLICATION->settings();
+    auto originalIconTheme = settings->get("IconTheme").toString();
+    auto& newIconTheme = m_iconThemeOptions[index].first;
+    settings->set("IconTheme", newIconTheme);
+
+    if (originalIconTheme != newIconTheme) {
+        APPLICATION->applyCurrentlySelectedTheme();
+    }
+
+    emit currentIconThemeChanged(index);
+}
+
+void ThemeCustomizationWidget::applyWidgetTheme(int index) {
+    auto settings = APPLICATION->settings();
+    auto originalAppTheme = settings->get("ApplicationTheme").toString();
+    auto newAppTheme = ui->widgetStyleComboBox->currentData().toString();
+    if (originalAppTheme != newAppTheme) {
+        settings->set("ApplicationTheme", newAppTheme);
+        APPLICATION->applyCurrentlySelectedTheme();
+    }
+
+    emit currentWidgetThemeChanged(index);
+}
+
+void ThemeCustomizationWidget::applyCatTheme(int index) {
+    auto settings = APPLICATION->settings();
+    settings->set("BackgroundCat", m_catOptions[index].first);
+
+    emit currentCatChanged(index);
+}
+
+void ThemeCustomizationWidget::applySettings()
+{
+    applyIconTheme(ui->iconsComboBox->currentIndex());
+    applyWidgetTheme(ui->widgetStyleComboBox->currentIndex());
+    applyCatTheme(ui->backgroundCatComboBox->currentIndex());
+}
+void ThemeCustomizationWidget::loadSettings()
+{
+    auto settings = APPLICATION->settings();
+
+    auto iconTheme = settings->get("IconTheme").toString();
+    for (auto& iconThemeFromList : m_iconThemeOptions) {
+        QIcon iconForComboBox = QIcon(QString(":/icons/%1/scalable/settings").arg(iconThemeFromList.first));
+        ui->iconsComboBox->addItem(iconForComboBox, iconThemeFromList.second);
+        if (iconTheme == iconThemeFromList.first) {
+            ui->iconsComboBox->setCurrentIndex(ui->iconsComboBox->count() - 1);
+        }
+    }
+
+    {
+        auto currentTheme = settings->get("ApplicationTheme").toString();
+        auto themes = APPLICATION->getValidApplicationThemes();
+        int idx = 0;
+        for (auto& theme : themes) {
+            ui->widgetStyleComboBox->addItem(theme->name(), theme->id());
+            if (currentTheme == theme->id()) {
+                ui->widgetStyleComboBox->setCurrentIndex(idx);
+            }
+            idx++;
+        }
+    }
+
+    auto cat = settings->get("BackgroundCat").toString();
+    for (auto& catFromList : m_catOptions) {
+        QIcon catIcon = QIcon(QString(":/backgrounds/%1").arg(ThemeManager::getCatImage(catFromList.first)));
+        ui->backgroundCatComboBox->addItem(catIcon, catFromList.second);
+        if (cat == catFromList.first) {
+            ui->backgroundCatComboBox->setCurrentIndex(ui->backgroundCatComboBox->count() - 1);
+        }
+    }
+}
+
+void ThemeCustomizationWidget::retranslate()
+{
+    ui->retranslateUi(this);
+}
diff --git a/launcher/ui/widgets/ThemeCustomizationWidget.h b/launcher/ui/widgets/ThemeCustomizationWidget.h
new file mode 100644
index 00000000..d955a266
--- /dev/null
+++ b/launcher/ui/widgets/ThemeCustomizationWidget.h
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Tayou <tayou@gmx.net>
+ *
+ *  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 <QWidget>
+#include "translations/TranslationsModel.h"
+
+enum ThemeFields { NONE = 0b0000, ICONS = 0b0001, WIDGETS = 0b0010, CAT = 0b0100 };
+
+namespace Ui {
+class ThemeCustomizationWidget;
+}
+
+class ThemeCustomizationWidget : public QWidget {
+    Q_OBJECT
+
+   public:
+    explicit ThemeCustomizationWidget(QWidget* parent = nullptr);
+    ~ThemeCustomizationWidget();
+
+    void showFeatures(ThemeFields features);
+
+    void applySettings();
+
+    void loadSettings();
+    void retranslate();
+
+   private slots:
+    void applyIconTheme(int index);
+    void applyWidgetTheme(int index);
+    void applyCatTheme(int index);
+
+   signals:
+    int currentIconThemeChanged(int index);
+    int currentWidgetThemeChanged(int index);
+    int currentCatChanged(int index);
+
+   private:
+    Ui::ThemeCustomizationWidget* ui;
+
+    //TODO finish implementing
+    QList<std::pair<QString, QString>> m_iconThemeOptions{ 
+        { "pe_colored",     QObject::tr("Simple (Colored Icons)") }, 
+        { "pe_light",       QObject::tr("Simple (Light Icons)") },     
+        { "pe_dark",        QObject::tr("Simple (Dark Icons)") },
+        { "pe_blue",        QObject::tr("Simple (Blue Icons)") },    
+        { "breeze_light",   QObject::tr("Breeze Light") }, 
+        { "breeze_dark",    QObject::tr("Breeze Dark") },
+        { "OSX",            QObject::tr("OSX") },        
+        { "iOS",            QObject::tr("iOS") },          
+        { "flat",           QObject::tr("Flat") },
+        { "flat_white",     QObject::tr("Flat (White)") }, 
+        { "multimc",        QObject::tr("Legacy") },      
+        { "custom",         QObject::tr("Custom") } 
+    };
+    QList<std::pair<QString, QString>> m_catOptions{ 
+        { "kitteh",     QObject::tr("Background Cat (from MultiMC)") }, 
+        { "rory",       QObject::tr("Rory ID 11 (drawn by Ashtaka)") }, 
+        { "rory-flat",  QObject::tr("Rory ID 11 (flat edition, drawn by Ashtaka)") },
+        { "teawie",     QObject::tr("Teawie (drawn by SympathyTea)") }
+    };
+};
diff --git a/launcher/ui/widgets/ThemeCustomizationWidget.ui b/launcher/ui/widgets/ThemeCustomizationWidget.ui
new file mode 100644
index 00000000..f216a610
--- /dev/null
+++ b/launcher/ui/widgets/ThemeCustomizationWidget.ui
@@ -0,0 +1,132 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>ThemeCustomizationWidget</class>
+ <widget class="QWidget" name="ThemeCustomizationWidget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>191</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string notr="true">Form</string>
+  </property>
+  <layout class="QFormLayout" name="formLayout">
+   <property name="sizeConstraint">
+    <enum>QLayout::SetMinimumSize</enum>
+   </property>
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
+    <number>0</number>
+   </property>
+   <item row="0" column="0">
+    <widget class="QLabel" name="iconsLabel">
+     <property name="text">
+      <string>&amp;Icons</string>
+     </property>
+     <property name="buddy">
+      <cstring>iconsComboBox</cstring>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="1">
+    <widget class="QComboBox" name="iconsComboBox">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="focusPolicy">
+      <enum>Qt::StrongFocus</enum>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0">
+    <widget class="QLabel" name="widgetThemeLabel">
+     <property name="text">
+      <string>&amp;Colors</string>
+     </property>
+     <property name="buddy">
+      <cstring>widgetStyleComboBox</cstring>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="1">
+    <widget class="QComboBox" name="widgetStyleComboBox">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="focusPolicy">
+      <enum>Qt::StrongFocus</enum>
+     </property>
+    </widget>
+   </item>
+   <item row="2" column="0">
+    <widget class="QLabel" name="backgroundCatLabel">
+     <property name="toolTip">
+      <string>The cat appears in the background and is not shown by default. It is only made visible when pressing the Cat button in the Toolbar.</string>
+     </property>
+     <property name="text">
+      <string>C&amp;at</string>
+     </property>
+     <property name="buddy">
+      <cstring>backgroundCatComboBox</cstring>
+     </property>
+    </widget>
+   </item>
+   <item row="2" column="1">
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QComboBox" name="backgroundCatComboBox">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="focusPolicy">
+        <enum>Qt::StrongFocus</enum>
+       </property>
+       <property name="toolTip">
+        <string>The cat appears in the background and is not shown by default. It is only made visible when pressing the Cat button in the Toolbar.</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="catInfoLabel">
+       <property name="toolTip">
+        <string>The cat appears in the background and is not shown by default. It is only made visible when pressing the Cat button in the Toolbar.</string>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+       <property name="icon">
+        <iconset theme="about">
+         <normaloff>.</normaloff>.</iconset>
+       </property>
+       <property name="flat">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>