Merge pull request #575 from Scrumplex/qt6

41 files changed, 630 insertions, 251 deletions

diff --git a/launcher/ui/InstanceWindow.cpp b/launcher/ui/InstanceWindow.cpp
index ae765c3c..0ad8c594 100644
--- a/launcher/ui/InstanceWindow.cpp
+++ b/launcher/ui/InstanceWindow.cpp
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
  *
- * 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
+ *  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.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *  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.
  *
- * 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.
+ *  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 "InstanceWindow.h"
@@ -97,9 +117,9 @@ InstanceWindow::InstanceWindow(InstancePtr instance, QWidget *parent)
     // set up instance and launch process recognition
     {
         auto launchTask = m_instance->getLaunchTask();
-        on_InstanceLaunchTask_changed(launchTask);
-        connect(m_instance.get(), &BaseInstance::launchTaskChanged, this, &InstanceWindow::on_InstanceLaunchTask_changed);
-        connect(m_instance.get(), &BaseInstance::runningStatusChanged, this, &InstanceWindow::on_RunningState_changed);
+        instanceLaunchTaskChanged(launchTask);
+        connect(m_instance.get(), &BaseInstance::launchTaskChanged, this, &InstanceWindow::instanceLaunchTaskChanged);
+        connect(m_instance.get(), &BaseInstance::runningStatusChanged, this, &InstanceWindow::runningStateChanged);
     }
 
     // set up instance destruction detection
@@ -152,12 +172,12 @@ void InstanceWindow::on_btnLaunchMinecraftOffline_clicked()
     APPLICATION->launch(m_instance, false, nullptr);
 }
 
-void InstanceWindow::on_InstanceLaunchTask_changed(shared_qobject_ptr<LaunchTask> proc)
+void InstanceWindow::instanceLaunchTaskChanged(shared_qobject_ptr<LaunchTask> proc)
 {
     m_proc = proc;
 }
 
-void InstanceWindow::on_RunningState_changed(bool running)
+void InstanceWindow::runningStateChanged(bool running)
 {
     updateLaunchButtons();
     m_container->refreshContainer();
diff --git a/launcher/ui/InstanceWindow.h b/launcher/ui/InstanceWindow.h
index 1acf684e..aec07868 100644
--- a/launcher/ui/InstanceWindow.h
+++ b/launcher/ui/InstanceWindow.h
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
  *
- * 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
+ *  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.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *  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.
  *
- * 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.
+ *  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
@@ -55,8 +75,8 @@ slots:
     void on_btnKillMinecraft_clicked();
     void on_btnLaunchMinecraftOffline_clicked();
 
-    void on_InstanceLaunchTask_changed(shared_qobject_ptr<LaunchTask> proc);
-    void on_RunningState_changed(bool running);
+    void instanceLaunchTaskChanged(shared_qobject_ptr<LaunchTask> proc);
+    void runningStateChanged(bool running);
     void on_instanceStatusChanged(BaseInstance::Status, BaseInstance::Status newStatus);
 
 protected:
diff --git a/launcher/ui/MainWindow.cpp b/launcher/ui/MainWindow.cpp
index aeff8073..d107635e 100644
--- a/launcher/ui/MainWindow.cpp
+++ b/launcher/ui/MainWindow.cpp
@@ -42,31 +42,31 @@
 
 #include "MainWindow.h"
 
-#include <QtCore/QVariant>
-#include <QtCore/QUrl>
-#include <QtCore/QDir>
-#include <QtCore/QFileInfo>
-
-#include <QtGui/QKeyEvent>
-
-#include <QtWidgets/QAction>
-#include <QtWidgets/QApplication>
-#include <QtWidgets/QButtonGroup>
-#include <QtWidgets/QHBoxLayout>
-#include <QtWidgets/QHeaderView>
-#include <QtWidgets/QMainWindow>
-#include <QtWidgets/QStatusBar>
-#include <QtWidgets/QToolBar>
-#include <QtWidgets/QWidget>
-#include <QtWidgets/QMenu>
-#include <QtWidgets/QMenuBar>
-#include <QtWidgets/QMessageBox>
-#include <QtWidgets/QInputDialog>
-#include <QtWidgets/QLabel>
-#include <QtWidgets/QToolButton>
-#include <QtWidgets/QWidgetAction>
-#include <QtWidgets/QProgressDialog>
-#include <QtWidgets/QShortcut>
+#include <QVariant>
+#include <QUrl>
+#include <QDir>
+#include <QFileInfo>
+
+#include <QKeyEvent>
+#include <QAction>
+
+#include <QApplication>
+#include <QButtonGroup>
+#include <QHBoxLayout>
+#include <QHeaderView>
+#include <QMainWindow>
+#include <QStatusBar>
+#include <QToolBar>
+#include <QWidget>
+#include <QMenu>
+#include <QMenuBar>
+#include <QMessageBox>
+#include <QInputDialog>
+#include <QLabel>
+#include <QToolButton>
+#include <QWidgetAction>
+#include <QProgressDialog>
+#include <QShortcut>
 
 #include <BaseInstance.h>
 #include <InstanceList.h>
@@ -235,7 +235,6 @@ public:
     TranslatedAction actionMods;
     TranslatedAction actionViewSelectedInstFolder;
     TranslatedAction actionViewSelectedMCFolder;
-    TranslatedAction actionViewSelectedModsFolder;
     TranslatedAction actionDeleteInstance;
     TranslatedAction actionConfig_Folder;
     TranslatedAction actionCAT;
@@ -709,14 +708,6 @@ public:
         actionViewSelectedMCFolder->setShortcut(QKeySequence(tr("Ctrl+M")));
         all_actions.append(&actionViewSelectedMCFolder);
 
-        /*
-        actionViewSelectedModsFolder = TranslatedAction(MainWindow);
-        actionViewSelectedModsFolder->setObjectName(QStringLiteral("actionViewSelectedModsFolder"));
-        actionViewSelectedModsFolder.setTextId(QT_TRANSLATE_NOOP("MainWindow", "Mods Folder"));
-        actionViewSelectedModsFolder.setTooltipId(QT_TRANSLATE_NOOP("MainWindow", "Open the selected instance's mods folder in a file browser."));
-        all_actions.append(&actionViewSelectedModsFolder);
-        */
-
         actionConfig_Folder = TranslatedAction(MainWindow);
         actionConfig_Folder->setObjectName(QStringLiteral("actionConfig_Folder"));
         actionConfig_Folder.setTextId(QT_TRANSLATE_NOOP("MainWindow", "Confi&g Folder"));
@@ -793,9 +784,6 @@ public:
         instanceToolBar->addSeparator();
 
         instanceToolBar->addAction(actionViewSelectedMCFolder);
-        /*
-        instanceToolBar->addAction(actionViewSelectedModsFolder);
-        */
         instanceToolBar->addAction(actionConfig_Folder);
         instanceToolBar->addAction(actionViewSelectedInstFolder);
 
@@ -1494,7 +1482,11 @@ void MainWindow::updateNotAvailable()
 
 QList<int> stringToIntList(const QString &string)
 {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
+    QStringList split = string.split(',', Qt::SkipEmptyParts);
+#else
     QStringList split = string.split(',', QString::SkipEmptyParts);
+#endif
     QList<int> out;
     for (int i = 0; i < split.size(); ++i)
     {
@@ -1890,11 +1882,6 @@ void MainWindow::globalSettingsClosed()
     update();
 }
 
-void MainWindow::on_actionInstanceSettings_triggered()
-{
-    APPLICATION->showInstanceWindow(m_selectedInstance, "settings");
-}
-
 void MainWindow::on_actionEditInstNotes_triggered()
 {
     APPLICATION->showInstanceWindow(m_selectedInstance, "notes");
@@ -2017,20 +2004,6 @@ void MainWindow::on_actionViewSelectedMCFolder_triggered()
     }
 }
 
-void MainWindow::on_actionViewSelectedModsFolder_triggered()
-{
-    if (m_selectedInstance)
-    {
-        QString str = m_selectedInstance->modsRoot();
-        if (!FS::ensureFilePathExists(str))
-        {
-            // TODO: report error
-            return;
-        }
-        DesktopServices::openDirectory(QDir(str).absolutePath());
-    }
-}
-
 void MainWindow::closeEvent(QCloseEvent *event)
 {
     // Save the window state and geometry.
diff --git a/launcher/ui/MainWindow.h b/launcher/ui/MainWindow.h
index 0ca8ec7b..d7930b5a 100644
--- a/launcher/ui/MainWindow.h
+++ b/launcher/ui/MainWindow.h
@@ -118,8 +118,6 @@ private slots:
 
     void on_actionViewSelectedMCFolder_triggered();
 
-    void on_actionViewSelectedModsFolder_triggered();
-
     void refreshInstances();
 
     void on_actionViewCentralModsFolder_triggered();
@@ -128,8 +126,6 @@ private slots:
 
     void on_actionSettings_triggered();
 
-    void on_actionInstanceSettings_triggered();
-
     void on_actionManageAccounts_triggered();
 
     void on_actionReportBug_triggered();
diff --git a/launcher/ui/dialogs/AboutDialog.cpp b/launcher/ui/dialogs/AboutDialog.cpp
index 8dadb755..c5367d5b 100644
--- a/launcher/ui/dialogs/AboutDialog.cpp
+++ b/launcher/ui/dialogs/AboutDialog.cpp
@@ -64,7 +64,9 @@ QString getCreditsHtml()
 {
     QString output;
     QTextStream stream(&output);
+#if QT_VERSION <= QT_VERSION_CHECK(6, 0, 0)
     stream.setCodec(QTextCodec::codecForName("UTF-8"));
+#endif
     stream << "<center>\n";
 
     //: %1 is the name of the launcher, determined at build time, e.g. "PolyMC Developers"
diff --git a/launcher/ui/dialogs/CopyInstanceDialog.cpp b/launcher/ui/dialogs/CopyInstanceDialog.cpp
index e5113981..9ec341bc 100644
--- a/launcher/ui/dialogs/CopyInstanceDialog.cpp
+++ b/launcher/ui/dialogs/CopyInstanceDialog.cpp
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
  *
- * 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
+ *  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.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *  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.
  *
- * 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.
+ *  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 <QLayout>
@@ -39,8 +59,14 @@ CopyInstanceDialog::CopyInstanceDialog(InstancePtr original, QWidget *parent)
     ui->iconButton->setIcon(APPLICATION->icons()->getIcon(InstIconKey));
     ui->instNameTextBox->setText(original->name());
     ui->instNameTextBox->setFocus();
+#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
+    auto groupList = APPLICATION->instances()->getGroups();
+    QSet<QString> groups(groupList.begin(), groupList.end());
+    groupList = QStringList(groups.values());
+#else
     auto groups = APPLICATION->instances()->getGroups().toSet();
     auto groupList = QStringList(groups.toList());
+#endif
     groupList.sort(Qt::CaseInsensitive);
     groupList.removeOne("");
     groupList.push_front("");
diff --git a/launcher/ui/dialogs/ExportInstanceDialog.cpp b/launcher/ui/dialogs/ExportInstanceDialog.cpp
index 8631edf6..9f32dd8e 100644
--- a/launcher/ui/dialogs/ExportInstanceDialog.cpp
+++ b/launcher/ui/dialogs/ExportInstanceDialog.cpp
@@ -488,7 +488,11 @@ void ExportInstanceDialog::loadPackIgnore()
     }
     auto data = ignoreFile.readAll();
     auto string = QString::fromUtf8(data);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
+    proxyModel->setBlockedPaths(string.split('\n', Qt::SkipEmptyParts));
+#else
     proxyModel->setBlockedPaths(string.split('\n', QString::SkipEmptyParts));
+#endif
 }
 
 void ExportInstanceDialog::savePackIgnore()
diff --git a/launcher/ui/dialogs/NewComponentDialog.cpp b/launcher/ui/dialogs/NewComponentDialog.cpp
index 1bbafb0c..ea790e8c 100644
--- a/launcher/ui/dialogs/NewComponentDialog.cpp
+++ b/launcher/ui/dialogs/NewComponentDialog.cpp
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
  *
- * 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
+ *  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.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *  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.
  *
- * 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.
+ *  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 "Application.h"
@@ -46,7 +66,6 @@ NewComponentDialog::NewComponentDialog(const QString & initialName, const QStrin
     connect(ui->nameTextBox, &QLineEdit::textChanged, this, &NewComponentDialog::updateDialogState);
     connect(ui->uidTextBox, &QLineEdit::textChanged, this, &NewComponentDialog::updateDialogState);
 
-    auto groups = APPLICATION->instances()->getGroups().toSet();
     ui->nameTextBox->setFocus();
 
     originalPlaceholderText = ui->uidTextBox->placeholderText();
diff --git a/launcher/ui/dialogs/NewInstanceDialog.cpp b/launcher/ui/dialogs/NewInstanceDialog.cpp
index 05ea091d..5b8ecc5b 100644
--- a/launcher/ui/dialogs/NewInstanceDialog.cpp
+++ b/launcher/ui/dialogs/NewInstanceDialog.cpp
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
  *
- * 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
+ *  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.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *  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.
  *
- * 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.
+ *  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 "Application.h"
@@ -54,8 +74,14 @@ NewInstanceDialog::NewInstanceDialog(const QString & initialGroup, const QString
     InstIconKey = "default";
     ui->iconButton->setIcon(APPLICATION->icons()->getIcon(InstIconKey));
 
+#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
+    auto groupList = APPLICATION->instances()->getGroups();
+    auto groups = QSet<QString>(groupList.begin(), groupList.end());
+    groupList = groups.values();
+#else
     auto groups = APPLICATION->instances()->getGroups().toSet();
     auto groupList = QStringList(groups.toList());
+#endif
     groupList.sort(Qt::CaseInsensitive);
     groupList.removeOne("");
     groupList.push_front(initialGroup);
diff --git a/launcher/ui/dialogs/NewsDialog.cpp b/launcher/ui/dialogs/NewsDialog.cpp
index df620464..d3b21627 100644
--- a/launcher/ui/dialogs/NewsDialog.cpp
+++ b/launcher/ui/dialogs/NewsDialog.cpp
@@ -16,7 +16,7 @@ NewsDialog::NewsDialog(QList<NewsEntryPtr> entries, QWidget* parent) : QDialog(p
     m_article_list_hidden = ui->articleListWidget->isHidden();
 
     auto first_item = ui->articleListWidget->item(0);
-    ui->articleListWidget->setItemSelected(first_item, true);
+    first_item->setSelected(true);
 
     auto article_entry = m_entries.constFind(first_item->text()).value();
     ui->articleTitleLabel->setText(QString("<a href='%1'>%2</a>").arg(article_entry->link, first_item->text()));
diff --git a/launcher/ui/dialogs/ProfileSetupDialog.cpp b/launcher/ui/dialogs/ProfileSetupDialog.cpp
index 76b6af49..64c0b924 100644
--- a/launcher/ui/dialogs/ProfileSetupDialog.cpp
+++ b/launcher/ui/dialogs/ProfileSetupDialog.cpp
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
  *
- * 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
+ *  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.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *  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.
  *
- * 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.
+ *  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 "ProfileSetupDialog.h"
@@ -18,7 +38,7 @@
 
 #include <QPushButton>
 #include <QAction>
-#include <QRegExpValidator>
+#include <QRegularExpressionValidator>
 #include <QJsonDocument>
 #include <QDebug>
 
@@ -39,9 +59,9 @@ ProfileSetupDialog::ProfileSetupDialog(MinecraftAccountPtr accountToSetup, QWidg
     yellowIcon = APPLICATION->getThemedIcon("status-yellow");
     badIcon = APPLICATION->getThemedIcon("status-bad");
 
-    QRegExp permittedNames("[a-zA-Z0-9_]{3,16}");
+    QRegularExpression permittedNames("[a-zA-Z0-9_]{3,16}");
     auto nameEdit = ui->nameEdit;
-    nameEdit->setValidator(new QRegExpValidator(permittedNames));
+    nameEdit->setValidator(new QRegularExpressionValidator(permittedNames));
     nameEdit->setClearButtonEnabled(true);
     validityAction = nameEdit->addAction(yellowIcon, QLineEdit::LeadingPosition);
     connect(nameEdit, &QLineEdit::textEdited, this, &ProfileSetupDialog::nameEdited);
diff --git a/launcher/ui/dialogs/SkinUploadDialog.cpp b/launcher/ui/dialogs/SkinUploadDialog.cpp
index 8d137afc..b5b78690 100644
--- a/launcher/ui/dialogs/SkinUploadDialog.cpp
+++ b/launcher/ui/dialogs/SkinUploadDialog.cpp
@@ -1,3 +1,38 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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 <QFileInfo>
 #include <QFileDialog>
 #include <QPainter>
@@ -22,10 +57,10 @@ void SkinUploadDialog::on_buttonBox_accepted()
 {
     QString fileName;
     QString input = ui->skinPathTextBox->text();
-    QRegExp urlPrefixMatcher("^([a-z]+)://.+$");
+    QRegularExpression urlPrefixMatcher(QRegularExpression::anchoredPattern("^([a-z]+)://.+$"));
     bool isLocalFile = false;
     // it has an URL prefix -> it is an URL
-    if(urlPrefixMatcher.exactMatch(input))
+    if(urlPrefixMatcher.match(input).hasMatch())
     {
         QUrl fileURL = input;
         if(fileURL.isValid())
diff --git a/launcher/ui/dialogs/UpdateDialog.cpp b/launcher/ui/dialogs/UpdateDialog.cpp
index ec77d146..e0c5a495 100644
--- a/launcher/ui/dialogs/UpdateDialog.cpp
+++ b/launcher/ui/dialogs/UpdateDialog.cpp
@@ -1,3 +1,38 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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 "UpdateDialog.h"
 #include "ui_UpdateDialog.h"
 #include <QDebug>
@@ -58,7 +93,7 @@ QString reprocessMarkdown(QByteArray markdown)
     QString output = hoedown.process(markdown);
 
     // HACK: easier than customizing hoedown
-    output.replace(QRegExp("GH-([0-9]+)"), "<a href=\"https://github.com/PolyMC/PolyMC/issues/\\1\">GH-\\1</a>");
+    output.replace(QRegularExpression("GH-([0-9]+)"), "<a href=\"https://github.com/PolyMC/PolyMC/issues/\\1\">GH-\\1</a>");
     qDebug() << output;
     return output;
 }
diff --git a/launcher/ui/instanceview/InstanceDelegate.cpp b/launcher/ui/instanceview/InstanceDelegate.cpp
index b446e39d..137cc8d5 100644
--- a/launcher/ui/instanceview/InstanceDelegate.cpp
+++ b/launcher/ui/instanceview/InstanceDelegate.cpp
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
  *
- * 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
+ *  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.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *  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.
  *
- * 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.
+ *  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 "InstanceDelegate.h"
@@ -24,7 +44,7 @@
 #include "InstanceView.h"
 #include "BaseInstance.h"
 #include "InstanceList.h"
-#include <xdgicon.h>
+#include <QIcon>
 #include <QTextEdit>
 
 // Origin: Qt
@@ -61,7 +81,7 @@ void drawSelectionRect(QPainter *painter, const QStyleOptionViewItem &option,
         painter->fillRect(rect, option.palette.brush(QPalette::Highlight));
     else
     {
-        QColor backgroundColor = option.palette.color(QPalette::Background);
+        QColor backgroundColor = option.palette.color(QPalette::Window);
         backgroundColor.setAlpha(160);
         painter->fillRect(rect, QBrush(backgroundColor));
     }
@@ -142,7 +162,7 @@ void drawBadges(QPainter *painter, const QStyleOptionViewItem &option, BaseInsta
                 return;
             }
             // FIXME: inject this.
-            auto icon = XdgIcon::fromTheme(it.next());
+            auto icon = QIcon::fromTheme(it.next());
             // opt.icon.paint(painter, iconbox, Qt::AlignCenter, mode, state);
             const QPixmap pixmap;
             // itemSide
diff --git a/launcher/ui/instanceview/InstanceView.cpp b/launcher/ui/instanceview/InstanceView.cpp
index 25aec1ab..fbeffe35 100644
--- a/launcher/ui/instanceview/InstanceView.cpp
+++ b/launcher/ui/instanceview/InstanceView.cpp
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
  *
- * 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
+ *  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.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *  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.
  *
- * 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.
+ *  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 "InstanceView.h"
@@ -425,7 +445,12 @@ void InstanceView::mouseReleaseEvent(QMouseEvent *event)
         {
             emit clicked(index);
         }
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+        QStyleOptionViewItem option;
+        initViewItemOption(&option);
+#else
         QStyleOptionViewItem option = viewOptions();
+#endif
         if (m_pressedAlreadySelected)
         {
             option.state |= QStyle::State_Selected;
@@ -461,7 +486,12 @@ void InstanceView::mouseDoubleClickEvent(QMouseEvent *event)
     QPersistentModelIndex persistent = index;
     emit doubleClicked(persistent);
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    QStyleOptionViewItem option;
+    initViewItemOption(&option);
+#else
     QStyleOptionViewItem option = viewOptions();
+#endif
     if ((model()->flags(index) & Qt::ItemIsEnabled) && !style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick, &option, this))
     {
         emit activated(index);
@@ -474,7 +504,12 @@ void InstanceView::paintEvent(QPaintEvent *event)
 
     QPainter painter(this->viewport());
 
-    QStyleOptionViewItem option(viewOptions());
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    QStyleOptionViewItem option;
+    initViewItemOption(&option);
+#else
+    QStyleOptionViewItem option = viewOptions();
+#endif
     option.widget = this;
 
     int wpWidth = viewport()->width();
@@ -528,9 +563,9 @@ void InstanceView::paintEvent(QPaintEvent *event)
 #if 0
     if (!m_lastDragPosition.isNull())
     {
-        QPair<Group *, int> pair = rowDropPos(m_lastDragPosition);
-        Group *category = pair.first;
-        int row = pair.second;
+        std::pair<VisualGroup *, VisualGroup::HitResults> pair = rowDropPos(m_lastDragPosition);
+        VisualGroup *category = pair.first;
+        VisualGroup::HitResults row = pair.second;
         if (category)
         {
             int internalRow = row - category->firstItemIndex;
@@ -618,7 +653,7 @@ void InstanceView::dropEvent(QDropEvent *event)
     {
         if(event->possibleActions() & Qt::MoveAction)
         {
-            QPair<VisualGroup *, VisualGroup::HitResults> dropPos = rowDropPos(event->pos());
+            std::pair<VisualGroup *, VisualGroup::HitResults> dropPos = rowDropPos(event->pos());
             const VisualGroup *group = dropPos.first;
             auto hitresult = dropPos.second;
 
@@ -709,10 +744,18 @@ QRect InstanceView::geometryRect(const QModelIndex &index) const
     int x = pos.first;
     // int y = pos.second;
 
+
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    QStyleOptionViewItem option;
+    initViewItemOption(&option);
+#else
+    QStyleOptionViewItem option = viewOptions();
+#endif
+
     QRect out;
     out.setTop(cat->verticalPosition() + cat->headerHeight() + 5 + cat->rowTopOf(index));
     out.setLeft(m_spacing + x * (itemWidth() + m_spacing));
-    out.setSize(itemDelegate()->sizeHint(viewOptions(), index));
+    out.setSize(itemDelegate()->sizeHint(option, index));
     geometryCache.insert(row, new QRect(out));
     return out;
 }
@@ -759,7 +802,12 @@ QPixmap InstanceView::renderToPixmap(const QModelIndexList &indices, QRect *r) c
     QPixmap pixmap(r->size());
     pixmap.fill(Qt::transparent);
     QPainter painter(&pixmap);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    QStyleOptionViewItem option;
+    initViewItemOption(&option);
+#else
     QStyleOptionViewItem option = viewOptions();
+#endif
     option.state |= QStyle::State_Selected;
     for (int j = 0; j < paintPairs.count(); ++j)
     {
@@ -770,16 +818,16 @@ QPixmap InstanceView::renderToPixmap(const QModelIndexList &indices, QRect *r) c
     return pixmap;
 }
 
-QList<QPair<QRect, QModelIndex>> InstanceView::draggablePaintPairs(const QModelIndexList &indices, QRect *r) const
+QList<std::pair<QRect, QModelIndex>> InstanceView::draggablePaintPairs(const QModelIndexList &indices, QRect *r) const
 {
     Q_ASSERT(r);
     QRect &rect = *r;
-    QList<QPair<QRect, QModelIndex>> ret;
+    QList<std::pair<QRect, QModelIndex>> ret;
     for (int i = 0; i < indices.count(); ++i)
     {
         const QModelIndex &index = indices.at(i);
         const QRect current = geometryRect(index);
-        ret += qMakePair(current, index);
+        ret += std::make_pair(current, index);
         rect |= current;
     }
     return ret;
@@ -790,11 +838,11 @@ bool InstanceView::isDragEventAccepted(QDropEvent *event)
     return true;
 }
 
-QPair<VisualGroup *, VisualGroup::HitResults> InstanceView::rowDropPos(const QPoint &pos)
+std::pair<VisualGroup *, VisualGroup::HitResults> InstanceView::rowDropPos(const QPoint &pos)
 {
     VisualGroup::HitResults hitresult;
     auto group = categoryAt(pos + offset(), hitresult);
-    return qMakePair<VisualGroup*, int>(group, hitresult);
+    return std::make_pair(group, hitresult);
 }
 
 QPoint InstanceView::offset() const
diff --git a/launcher/ui/instanceview/InstanceView.h b/launcher/ui/instanceview/InstanceView.h
index 406362e6..ac338274 100644
--- a/launcher/ui/instanceview/InstanceView.h
+++ b/launcher/ui/instanceview/InstanceView.h
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
  *
- * 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
+ *  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.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *  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.
  *
- * 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.
+ *  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
@@ -143,11 +163,11 @@ private: /* methods */
     int calculateItemsPerRow() const;
     int verticalScrollToValue(const QModelIndex &index, const QRect &rect, QListView::ScrollHint hint) const;
     QPixmap renderToPixmap(const QModelIndexList &indices, QRect *r) const;
-    QList<QPair<QRect, QModelIndex>> draggablePaintPairs(const QModelIndexList &indices, QRect *r) const;
+    QList<std::pair<QRect, QModelIndex>> draggablePaintPairs(const QModelIndexList &indices, QRect *r) const;
 
     bool isDragEventAccepted(QDropEvent *event);
 
-    QPair<VisualGroup *, VisualGroup::HitResults> rowDropPos(const QPoint &pos);
+    std::pair<VisualGroup *, VisualGroup::HitResults> rowDropPos(const QPoint &pos);
 
     QPoint offset() const;
 };
diff --git a/launcher/ui/instanceview/VisualGroup.cpp b/launcher/ui/instanceview/VisualGroup.cpp
index 8991fb2d..e6bca17d 100644
--- a/launcher/ui/instanceview/VisualGroup.cpp
+++ b/launcher/ui/instanceview/VisualGroup.cpp
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
  *
- * 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
+ *  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.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *  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.
  *
- * 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.
+ *  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 "VisualGroup.h"
@@ -55,7 +75,14 @@ void VisualGroup::update()
             positionInRow = 0;
             maxRowHeight = 0;
         }
-        auto itemHeight = view->itemDelegate()->sizeHint(view->viewOptions(), item).height();
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+        QStyleOptionViewItem viewItemOption;
+        view->initViewItemOption(&viewItemOption);
+#else
+        QStyleOptionViewItem viewItemOption = view->viewOptions();
+#endif
+
+        auto itemHeight = view->itemDelegate()->sizeHint(viewItemOption, item).height();
         if(itemHeight > maxRowHeight)
         {
             maxRowHeight = itemHeight;
diff --git a/launcher/ui/pages/global/CustomCommandsPage.cpp b/launcher/ui/pages/global/CustomCommandsPage.cpp
index 436d766e..df1420ca 100644
--- a/launcher/ui/pages/global/CustomCommandsPage.cpp
+++ b/launcher/ui/pages/global/CustomCommandsPage.cpp
@@ -2,7 +2,7 @@
 /*
  *  PolyMC - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
- *  Copyright (c) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
diff --git a/launcher/ui/pages/global/ProxyPage.cpp b/launcher/ui/pages/global/ProxyPage.cpp
index aefd1e74..ffff8456 100644
--- a/launcher/ui/pages/global/ProxyPage.cpp
+++ b/launcher/ui/pages/global/ProxyPage.cpp
@@ -2,6 +2,7 @@
 /*
  *  PolyMC - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
@@ -36,11 +37,11 @@
 #include "ProxyPage.h"
 #include "ui_ProxyPage.h"
 
+#include <QButtonGroup>
 #include <QTabBar>
 
 #include "settings/SettingsObject.h"
 #include "Application.h"
-#include "Application.h"
 
 ProxyPage::ProxyPage(QWidget *parent) : QWidget(parent), ui(new Ui::ProxyPage)
 {
@@ -49,7 +50,8 @@ ProxyPage::ProxyPage(QWidget *parent) : QWidget(parent), ui(new Ui::ProxyPage)
     loadSettings();
     updateCheckboxStuff();
 
-    connect(ui->proxyGroup, SIGNAL(buttonClicked(int)), SLOT(proxyChanged(int)));
+    connect(ui->proxyGroup, QOverload<QAbstractButton *>::of(&QButtonGroup::buttonClicked),
+            this, &ProxyPage::proxyGroupChanged);
 }
 
 ProxyPage::~ProxyPage()
@@ -65,13 +67,13 @@ bool ProxyPage::apply()
 
 void ProxyPage::updateCheckboxStuff()
 {
-    ui->proxyAddrBox->setEnabled(!ui->proxyNoneBtn->isChecked() &&
-                                 !ui->proxyDefaultBtn->isChecked());
-    ui->proxyAuthBox->setEnabled(!ui->proxyNoneBtn->isChecked() &&
-                                 !ui->proxyDefaultBtn->isChecked());
+    bool enableEditing = ui->proxyHTTPBtn->isChecked()
+        || ui->proxySOCKS5Btn->isChecked();
+    ui->proxyAddrBox->setEnabled(enableEditing);
+    ui->proxyAuthBox->setEnabled(enableEditing);
 }
 
-void ProxyPage::proxyChanged(int)
+void ProxyPage::proxyGroupChanged(QAbstractButton *button)
 {
     updateCheckboxStuff();
 }
diff --git a/launcher/ui/pages/global/ProxyPage.h b/launcher/ui/pages/global/ProxyPage.h
index e3677774..279a9029 100644
--- a/launcher/ui/pages/global/ProxyPage.h
+++ b/launcher/ui/pages/global/ProxyPage.h
@@ -2,6 +2,7 @@
 /*
  *  PolyMC - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
@@ -36,6 +37,7 @@
 #pragma once
 
 #include <memory>
+#include <QAbstractButton>
 #include <QDialog>
 
 #include "ui/pages/BasePage.h"
@@ -73,15 +75,14 @@ public:
     bool apply() override;
     void retranslate() override;
 
+private slots:
+    void proxyGroupChanged(QAbstractButton *button);
+
 private:
     void updateCheckboxStuff();
     void applySettings();
     void loadSettings();
 
-private
-slots:
-    void proxyChanged(int);
-
 private:
     Ui::ProxyPage *ui;
 };
diff --git a/launcher/ui/pages/instance/ExternalResourcesPage.cpp b/launcher/ui/pages/instance/ExternalResourcesPage.cpp
index 02eeae3d..d06f412b 100644
--- a/launcher/ui/pages/instance/ExternalResourcesPage.cpp
+++ b/launcher/ui/pages/instance/ExternalResourcesPage.cpp
@@ -32,13 +32,13 @@ class SortProxy : public QSortFilterProxyModel {
         
         const auto& mod = model->at(source_row);
 
-        if (mod.name().contains(filterRegExp()))
+        if (mod.name().contains(filterRegularExpression()))
             return true;
-        if (mod.description().contains(filterRegExp()))
+        if (mod.description().contains(filterRegularExpression()))
             return true;
         
         for (auto& author : mod.authors()) {
-            if (author.contains(filterRegExp())) {
+            if (author.contains(filterRegularExpression())) {
                 return true;
             }
         }
diff --git a/launcher/ui/pages/instance/InstanceSettingsPage.cpp b/launcher/ui/pages/instance/InstanceSettingsPage.cpp
index 1d8cd1d7..fcc110de 100644
--- a/launcher/ui/pages/instance/InstanceSettingsPage.cpp
+++ b/launcher/ui/pages/instance/InstanceSettingsPage.cpp
@@ -2,7 +2,7 @@
 /*
  *  PolyMC - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
- *  Copyright (c) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
diff --git a/launcher/ui/pages/instance/LogPage.cpp b/launcher/ui/pages/instance/LogPage.cpp
index 8fefb44c..3d9fb025 100644
--- a/launcher/ui/pages/instance/LogPage.cpp
+++ b/launcher/ui/pages/instance/LogPage.cpp
@@ -63,7 +63,7 @@ public:
         {
             case Qt::FontRole:
                 return m_font;
-            case Qt::TextColorRole:
+            case Qt::ForegroundRole:
             {
                 MessageLevel::Enum level = (MessageLevel::Enum) QIdentityProxyModel::data(index, LogModel::LevelRole).toInt();
                 return m_colors->getFront(level);
diff --git a/launcher/ui/pages/instance/ModFolderPage.h b/launcher/ui/pages/instance/ModFolderPage.h
index 1a9ed7db..19caa732 100644
--- a/launcher/ui/pages/instance/ModFolderPage.h
+++ b/launcher/ui/pages/instance/ModFolderPage.h
@@ -2,6 +2,7 @@
 /*
  *  PolyMC - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
diff --git a/launcher/ui/pages/instance/ScreenshotsPage.cpp b/launcher/ui/pages/instance/ScreenshotsPage.cpp
index 51163e28..c97253e4 100644
--- a/launcher/ui/pages/instance/ScreenshotsPage.cpp
+++ b/launcher/ui/pages/instance/ScreenshotsPage.cpp
@@ -50,6 +50,7 @@
 #include <QClipboard>
 #include <QKeyEvent>
 #include <QMenu>
+#include <QRegularExpression>
 
 #include <Application.h>
 
@@ -154,7 +155,7 @@ public:
         if (role == Qt::DisplayRole || role == Qt::EditRole)
         {
             QVariant result = sourceModel()->data(mapToSource(proxyIndex), role);
-            return result.toString().remove(QRegExp("\\.png$"));
+            return result.toString().remove(QRegularExpression("\\.png$"));
         }
         if (role == Qt::DecorationRole)
         {
@@ -270,7 +271,7 @@ ScreenshotsPage::ScreenshotsPage(QString path, QWidget *parent)
     ui->listView->setViewMode(QListView::IconMode);
     ui->listView->setResizeMode(QListView::Adjust);
     ui->listView->installEventFilter(this);
-    ui->listView->setEditTriggers(0);
+    ui->listView->setEditTriggers(QAbstractItemView::NoEditTriggers);
     ui->listView->setItemDelegate(new CenteredEditingDelegate(this));
     ui->listView->setContextMenuPolicy(Qt::CustomContextMenu);
     connect(ui->listView, &QListView::customContextMenuRequested, this, &ScreenshotsPage::ShowContextMenu);
diff --git a/launcher/ui/pages/instance/ServersPage.cpp b/launcher/ui/pages/instance/ServersPage.cpp
index 3971d422..e5cce96c 100644
--- a/launcher/ui/pages/instance/ServersPage.cpp
+++ b/launcher/ui/pages/instance/ServersPage.cpp
@@ -288,7 +288,11 @@ public:
             return false;
         }
         beginMoveRows(QModelIndex(), row, row, QModelIndex(), row - 1);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
+        m_servers.swapItemsAt(row-1, row);
+#else
         m_servers.swap(row-1, row);
+#endif
         endMoveRows();
         scheduleSave();
         return true;
@@ -306,7 +310,11 @@ public:
             return false;
         }
         beginMoveRows(QModelIndex(), row, row, QModelIndex(), row + 2);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
+        m_servers.swapItemsAt(row+1, row);
+#else
         m_servers.swap(row+1, row);
+#endif
         endMoveRows();
         scheduleSave();
         return true;
@@ -615,7 +623,7 @@ ServersPage::ServersPage(InstancePtr inst, QWidget* parent)
 
     auto selectionModel = ui->serversView->selectionModel();
     connect(selectionModel, &QItemSelectionModel::currentChanged, this, &ServersPage::currentChanged);
-    connect(m_inst.get(), &MinecraftInstance::runningStatusChanged, this, &ServersPage::on_RunningState_changed);
+    connect(m_inst.get(), &MinecraftInstance::runningStatusChanged, this, &ServersPage::runningStateChanged);
     connect(ui->nameLine, &QLineEdit::textEdited, this, &ServersPage::nameEdited);
     connect(ui->addressLine, &QLineEdit::textEdited, this, &ServersPage::addressEdited);
     connect(ui->resourceComboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(resourceIndexChanged(int)));
@@ -655,7 +663,7 @@ QMenu * ServersPage::createPopupMenu()
     return filteredMenu;
 }
 
-void ServersPage::on_RunningState_changed(bool running)
+void ServersPage::runningStateChanged(bool running)
 {
     if(m_locked == running)
     {
diff --git a/launcher/ui/pages/instance/ServersPage.h b/launcher/ui/pages/instance/ServersPage.h
index 5173712c..37399d49 100644
--- a/launcher/ui/pages/instance/ServersPage.h
+++ b/launcher/ui/pages/instance/ServersPage.h
@@ -2,6 +2,7 @@
 /*
  *  PolyMC - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
@@ -97,7 +98,7 @@ private slots:
     void on_actionMove_Down_triggered();
     void on_actionJoin_triggered();
 
-    void on_RunningState_changed(bool running);
+    void runningStateChanged(bool running);
 
     void nameEdited(const QString & name);
     void addressEdited(const QString & address);
diff --git a/launcher/ui/pages/instance/VersionPage.cpp b/launcher/ui/pages/instance/VersionPage.cpp
index 23e2367b..468ff35c 100644
--- a/launcher/ui/pages/instance/VersionPage.cpp
+++ b/launcher/ui/pages/instance/VersionPage.cpp
@@ -2,7 +2,7 @@
 /*
  *  PolyMC - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
- *  Copyright (c) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
diff --git a/launcher/ui/pages/modplatform/ImportPage.cpp b/launcher/ui/pages/modplatform/ImportPage.cpp
index 0b8577b1..30196aad 100644
--- a/launcher/ui/pages/modplatform/ImportPage.cpp
+++ b/launcher/ui/pages/modplatform/ImportPage.cpp
@@ -2,7 +2,7 @@
 /*
  *  PolyMC - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
- *  Copyright (c) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
diff --git a/launcher/ui/pages/modplatform/flame/FlameModPage.cpp b/launcher/ui/pages/modplatform/flame/FlameModPage.cpp
index 1c160fd4..10d34218 100644
--- a/launcher/ui/pages/modplatform/flame/FlameModPage.cpp
+++ b/launcher/ui/pages/modplatform/flame/FlameModPage.cpp
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-only
 /*
  *  PolyMC - Minecraft Launcher
- *  Copyright (c) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
diff --git a/launcher/ui/pages/modplatform/flame/FlameModPage.h b/launcher/ui/pages/modplatform/flame/FlameModPage.h
index 86e1a17b..445d0368 100644
--- a/launcher/ui/pages/modplatform/flame/FlameModPage.h
+++ b/launcher/ui/pages/modplatform/flame/FlameModPage.h
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-only
 /*
  *  PolyMC - Minecraft Launcher
- *  Copyright (c) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
diff --git a/launcher/ui/pages/modplatform/legacy_ftb/ListModel.cpp b/launcher/ui/pages/modplatform/legacy_ftb/ListModel.cpp
index c13b1554..2d135e59 100644
--- a/launcher/ui/pages/modplatform/legacy_ftb/ListModel.cpp
+++ b/launcher/ui/pages/modplatform/legacy_ftb/ListModel.cpp
@@ -168,7 +168,7 @@ QVariant ListModel::data(const QModelIndex &index, int role) const
         ((ListModel *)this)->requestLogo(pack.logo);
         return icon;
     }
-    else if(role == Qt::TextColorRole)
+    else if(role == Qt::ForegroundRole)
     {
         if(pack.broken)
         {
diff --git a/launcher/ui/pages/modplatform/legacy_ftb/Page.cpp b/launcher/ui/pages/modplatform/legacy_ftb/Page.cpp
index 7667d169..6ffbd312 100644
--- a/launcher/ui/pages/modplatform/legacy_ftb/Page.cpp
+++ b/launcher/ui/pages/modplatform/legacy_ftb/Page.cpp
@@ -2,6 +2,7 @@
 /*
  *  PolyMC - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
@@ -151,7 +152,7 @@ void Page::openedImpl()
 
         ftbFetchTask->fetch();
         ftbPrivatePacks->load();
-        ftbFetchTask->fetchPrivate(ftbPrivatePacks->getCurrentPackCodes().toList());
+        ftbFetchTask->fetchPrivate(ftbPrivatePacks->getCurrentPackCodes().values());
         initialized = true;
     }
     suggestCurrent();
diff --git a/launcher/ui/pages/modplatform/modrinth/ModrinthModPage.cpp b/launcher/ui/pages/modplatform/modrinth/ModrinthModPage.cpp
index 0b81ea93..5fa00b9b 100644
--- a/launcher/ui/pages/modplatform/modrinth/ModrinthModPage.cpp
+++ b/launcher/ui/pages/modplatform/modrinth/ModrinthModPage.cpp
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-only
 /*
  *  PolyMC - Minecraft Launcher
- *  Copyright (c) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
diff --git a/launcher/ui/pages/modplatform/modrinth/ModrinthModPage.h b/launcher/ui/pages/modplatform/modrinth/ModrinthModPage.h
index c39acaa0..94985f63 100644
--- a/launcher/ui/pages/modplatform/modrinth/ModrinthModPage.h
+++ b/launcher/ui/pages/modplatform/modrinth/ModrinthModPage.h
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-only
 /*
  *  PolyMC - Minecraft Launcher
- *  Copyright (c) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
diff --git a/launcher/ui/widgets/CustomCommands.cpp b/launcher/ui/widgets/CustomCommands.cpp
index 5a718b54..5ab90395 100644
--- a/launcher/ui/widgets/CustomCommands.cpp
+++ b/launcher/ui/widgets/CustomCommands.cpp
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-only
 /*
  *  PolyMC - Minecraft Launcher
- *  Copyright (c) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
diff --git a/launcher/ui/widgets/CustomCommands.h b/launcher/ui/widgets/CustomCommands.h
index 4a7a17ef..ed10ba95 100644
--- a/launcher/ui/widgets/CustomCommands.h
+++ b/launcher/ui/widgets/CustomCommands.h
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-only
 /*
  *  PolyMC - Minecraft Launcher
- *  Copyright (c) 2022 Sefa Eyeoglu <contact@scrumplex.net>
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
diff --git a/launcher/ui/widgets/LabeledToolButton.cpp b/launcher/ui/widgets/LabeledToolButton.cpp
index ab2d3278..f52e49c9 100644
--- a/launcher/ui/widgets/LabeledToolButton.cpp
+++ b/launcher/ui/widgets/LabeledToolButton.cpp
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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
+ *      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
+ *          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.
+ *      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 <QLabel>
@@ -80,9 +100,7 @@ QSize LabeledToolButton::sizeHint() const
     if (popupMode() == MenuButtonPopup)
         w += style()->pixelMetric(QStyle::PM_MenuButtonIndicator, &opt, this);
     
-    QSize rawSize = style()->sizeFromContents(QStyle::CT_ToolButton, &opt, QSize(w, h), this);
-    QSize sizeHint = rawSize.expandedTo(QApplication::globalStrut());
-    return sizeHint;
+    return style()->sizeFromContents(QStyle::CT_ToolButton, &opt, QSize(w, h), this);
 }
 
 
diff --git a/launcher/ui/widgets/LogView.cpp b/launcher/ui/widgets/LogView.cpp
index 26a2a527..9c46438d 100644
--- a/launcher/ui/widgets/LogView.cpp
+++ b/launcher/ui/widgets/LogView.cpp
@@ -1,3 +1,38 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.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 "LogView.h"
 #include <QTextBlock>
 #include <QScrollBar>
@@ -102,7 +137,7 @@ void LogView::rowsInserted(const QModelIndex& parent, int first, int last)
         {
             format.setFont(font.value<QFont>());
         }
-        auto fg = m_model->data(idx, Qt::TextColorRole);
+        auto fg = m_model->data(idx, Qt::ForegroundRole);
         if(fg.isValid())
         {
             format.setForeground(fg.value<QColor>());
diff --git a/launcher/ui/widgets/PageContainer.cpp b/launcher/ui/widgets/PageContainer.cpp
index 2af7d731..419ccb66 100644
--- a/launcher/ui/widgets/PageContainer.cpp
+++ b/launcher/ui/widgets/PageContainer.cpp
@@ -66,7 +66,7 @@ public:
 protected:
     bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
     {
-        const QString pattern = filterRegExp().pattern();
+        const QString pattern = filterRegularExpression().pattern();
         const auto model = static_cast<PageModel *>(sourceModel());
         const auto page = model->pages().at(sourceRow);
         if (!page->shouldDisplay())
@@ -171,7 +171,7 @@ void PageContainer::createUI()
     headerHLayout->addSpacerItem(new QSpacerItem(rightMargin, 0, QSizePolicy::Fixed, QSizePolicy::Ignored));
     headerHLayout->setContentsMargins(0, 6, 0, 0);
 
-    m_pageStack->setMargin(0);
+    m_pageStack->setContentsMargins(0, 0, 0, 0);
     m_pageStack->addWidget(new QWidget(this));
 
     m_layout = new QGridLayout;
diff --git a/launcher/ui/widgets/VersionListView.cpp b/launcher/ui/widgets/VersionListView.cpp
index aba0b1a1..0e126c65 100644
--- a/launcher/ui/widgets/VersionListView.cpp
+++ b/launcher/ui/widgets/VersionListView.cpp
@@ -1,16 +1,36 @@
-/* Copyright 2013-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
  *
- * 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
+ *  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.
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *  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.
  *
- * 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.
+ *  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 <QHeaderView>
@@ -136,7 +156,7 @@ void VersionListView::paintInfoLabel(QPaintEvent *event) const
     auto innerBounds = bounds;
     innerBounds.adjust(10, 10, -10, -10);
 
-    QColor background = QApplication::palette().color(QPalette::Foreground);
+    QColor background = QApplication::palette().color(QPalette::WindowText);
     QColor foreground = QApplication::palette().color(QPalette::Base);
     foreground.setAlpha(190);
     painter.setFont(font);