Merge pull request #355 from dada513/flatpak_properly

Fix flatpak properly

.gitignore

@@ -42,3 +42,7 @@ run/
 
 # Nix/NixOS
 result/
+
+# Flatpak
+.flatpak-builder
+flatbuild

launcher/Application.cpp

@@ -1140,6 +1140,15 @@ std::vector<ITheme *> Application::getValidApplicationThemes()
     return ret;
 }
 
+bool Application::isFlatpak()
+{
+    #ifdef Q_OS_LINUX
+    return QFile::exists("/.flatpak-info");
+    #else
+    return false;
+    #endif
+}
+
 void Application::setApplicationTheme(const QString& name, bool initial)
 {
     auto systemPalette = qApp->palette();

launcher/Application.h

@@ -104,6 +104,8 @@ public:
 
     QIcon getThemedIcon(const QString& name);
 
+    bool isFlatpak();
+
     void setIconTheme(const QString& name);
 
     std::vector<ITheme *> getValidApplicationThemes();

launcher/DesktopServices.cpp

@@ -1,8 +1,43 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 dada513 <dada513@protonmail.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/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2013-2022 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 "DesktopServices.h"
 #include <QDir>
 #include <QDesktopServices>
 #include <QProcess>
 #include <QDebug>
+#include "Application.h"
 
 /**
  * This shouldn't exist, but until QTBUG-9328 and other unreported bugs are fixed, it needs to be a thing.
@@ -84,7 +119,14 @@ bool openDirectory(const QString &path, bool ensureExists)
         return QDesktopServices::openUrl(QUrl::fromLocalFile(dir.absolutePath()));
     };
 #if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
-    return IndirectOpen(f);
+    if(!APPLICATION->isFlatpak())
+    {
+        return IndirectOpen(f);
+    }
+    else
+    {
+        return f();
+    }
 #else
     return f();
 #endif
@@ -98,7 +140,14 @@ bool openFile(const QString &path)
         return QDesktopServices::openUrl(QUrl::fromLocalFile(path));
     };
 #if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
-    return IndirectOpen(f);
+    if(!APPLICATION->isFlatpak())
+    {
+        return IndirectOpen(f);
+    }
+    else
+    {
+        return f();
+    }
 #else
     return f();
 #endif
@@ -109,10 +158,17 @@ bool openFile(const QString &application, const QString &path, const QString &wo
     qDebug() << "Opening file" << path << "using" << application;
 #if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
     // FIXME: the pid here is fake. So if something depends on it, it will likely misbehave
-    return IndirectOpen([&]()
+    if(!APPLICATION->isFlatpak())
     {
-        return QProcess::startDetached(application, QStringList() << path, workingDirectory);
+        return IndirectOpen([&]()
-    }, pid);
+        {
+            return QProcess::startDetached(application, QStringList() << path, workingDirectory);
+        }, pid);
+    }
+    else
+    {
+      return QProcess::startDetached(application, QStringList() << path, workingDirectory, pid);  
+    }
 #else
     return QProcess::startDetached(application, QStringList() << path, workingDirectory, pid);
 #endif
@@ -122,11 +178,18 @@ bool run(const QString &application, const QStringList &args, const QString &wor
 {
     qDebug() << "Running" << application << "with args" << args.join(' ');
 #if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
+    if(!APPLICATION->isFlatpak())
+    {
     // FIXME: the pid here is fake. So if something depends on it, it will likely misbehave
     return IndirectOpen([&]()
     {
         return QProcess::startDetached(application, args, workingDirectory);
     }, pid);
+    }
+    else
+    {
+        return QProcess::startDetached(application, args, workingDirectory, pid);
+    }
 #else
     return QProcess::startDetached(application, args, workingDirectory, pid);
 #endif
@@ -140,7 +203,14 @@ bool openUrl(const QUrl &url)
         return QDesktopServices::openUrl(url);
     };
 #if defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD)
-    return IndirectOpen(f);
+    if(!APPLICATION->isFlatpak())
+    {
+        return IndirectOpen(f);
+    }
+    else
+    {
+        return f();
+    }
 #else
     return f();
 #endif

launcher/ui/pages/global/LauncherPage.cpp

@@ -2,6 +2,7 @@
 /*
  *  PolyMC - Minecraft Launcher
  *  Copyright (c) 2022 Jamie Mansfield <jmansfield@cadixdev.org>
+ *  Copyright (c) 2022 dada513 <dada513@protonmail.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
@@ -134,13 +135,31 @@ void LauncherPage::on_instDirBrowseBtn_clicked()
             warning.setInformativeText(
                 tr("Do you really want to use this path? "
                    "Selecting \"No\" will close this and not alter your instance path."));
-            warning.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
+            warning.setStandardButtons(QMessageBox::Ok | QMessageBox::Cancel);
             int result = warning.exec();
-            if (result == QMessageBox::Yes)
+            if (result == QMessageBox::Ok)
             {
                 ui->instDirTextBox->setText(cooked_dir);
             }
         }
+        else if(APPLICATION->isFlatpak() && raw_dir.startsWith("/run/user"))
+        {
+            QMessageBox warning;
+            warning.setText(tr("You're trying to specify an instance folder "
+                            "which was granted temporaily via Flatpak.\n"
+                            "This is known to cause problems. "
+                            "After a restart the launcher might break, "
+                            "because it will no longer have access to that directory.\n\n"
+                            "Granting PolyMC access to it via Flatseal is recommended."));
+            warning.setInformativeText(
+             tr("Do you want to proceed anyway?"));
+            warning.setStandardButtons(QMessageBox::Ok | QMessageBox::Cancel);
+            int result = warning.exec();
+            if (result == QMessageBox::Ok)
+            {
+                ui->instDirTextBox->setText(cooked_dir);
+            } 
+        } 
         else
         {
             ui->instDirTextBox->setText(cooked_dir);