File indexing completed on 2024-04-28 16:54:58

 /*
     SPDX-FileCopyrightText: 2012 Marco Martin <mart@kde.org>
     SPDX-FileCopyrightText: 2013 Sebastian Kügler <sebas@kde.org>
     SPDX-FileCopyrightText: 2015 David Edmundson <davidedmundson@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include <QApplication>
 #include <QCommandLineParser>
 #include <QDBusConnection>
 #include <QDBusMessage>
 #include <QDebug>
 #include <QLoggingCategory>
 #include <QMessageBox>
 #include <QProcess>
 #include <QQmlDebuggingEnabler>
 #include <QQuickWindow>
 #include <QSessionManager>
 #include <QSurfaceFormat>
 
 #include <KAboutData>
 
 #ifdef WITH_KUSERFEEDBACKCORE
 #include "userfeedback.h"
 #endif
 
 #include <kcrash.h>
 #include <kdbusservice.h>
 #include <klocalizedstring.h>
 #include <kworkspace.h>
 
 #include "coronatesthelper.h"
 #include "debug.h"
 #include "shellcorona.h"
 #include "softwarerendernotifier.h"
 #include "standaloneappcorona.h"
 
 #include <QDBusConnectionInterface>
 #include <QDir>
 
 int main(int argc, char *argv[])
 {
 #if QT_CONFIG(qml_debug)
     if (qEnvironmentVariableIsSet("PLASMA_ENABLE_QML_DEBUG")) {
         QQmlDebuggingEnabler debugger;
     }
 #endif
 
     auto format = QSurfaceFormat::defaultFormat();
     format.setOption(QSurfaceFormat::ResetNotification);
     QSurfaceFormat::setDefaultFormat(format);
 
     // Plasma scales itself to font DPI
     // on X, where we don't have compositor scaling, this generally works fine.
     // also there are bugs on older Qt, especially when it comes to fractional scaling
     // there's advantages to disabling, and (other than small context menu icons) few advantages in enabling
 
     // On wayland, it's different. Everything is simpler as all co-ordinates are in the same co-ordinate system
     // we don't have fractional scaling on the client so don't hit most the remaining bugs and
     // even if we don't use Qt scaling the compositor will try to scale us anyway so we have no choice
     if (!qEnvironmentVariableIsSet("PLASMA_USE_QT_SCALING")) {
         qunsetenv("QT_DEVICE_PIXEL_RATIO");
         QCoreApplication::setAttribute(Qt::AA_DisableHighDpiScaling);
     } else {
         QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
     }
     QCoreApplication::setAttribute(Qt::AA_ShareOpenGLContexts);
 
     QQuickWindow::setDefaultAlphaBuffer(true);
 
     qputenv("QT_WAYLAND_DISABLE_FIXED_POSITIONS", {});
     const bool qpaVariable = qEnvironmentVariableIsSet("QT_QPA_PLATFORM");
     KWorkSpace::detectPlatform(argc, argv);
     QApplication app(argc, argv);
     if (!qpaVariable) {
         // don't leak the env variable to processes we start
         qunsetenv("QT_QPA_PLATFORM");
     }
     qunsetenv("QT_WAYLAND_DISABLE_FIXED_POSITIONS");
 
     KLocalizedString::setApplicationDomain("plasmashell");
 
     // The executable's path is added to the library/plugin paths.
     // This does not make much sense for plasmashell.
     app.removeLibraryPath(QCoreApplication::applicationDirPath());
 
     KAboutData aboutData(QStringLiteral("plasmashell"), i18n("Plasma"), QStringLiteral(PROJECT_VERSION), i18n("Plasma Shell"), KAboutLicense::GPL);
 
     KAboutData::setApplicationData(aboutData);
 
     app.setQuitOnLastWindowClosed(false);
 
     bool replace = false;
 
     ShellCorona *corona;
     {
         QCommandLineParser cliOptions;
 
         QCommandLineOption dbgOption(QStringList() << QStringLiteral("d") << QStringLiteral("qmljsdebugger"), i18n("Enable QML Javascript debugger"));
 
         QCommandLineOption noRespawnOption(QStringList() << QStringLiteral("n") << QStringLiteral("no-respawn"),
                                            i18n("Do not restart plasma-shell automatically after a crash"));
 
         QCommandLineOption shellPluginOption(QStringList() << QStringLiteral("p") << QStringLiteral("shell-plugin"),
                                              i18n("Force loading the given shell plugin"),
                                              QStringLiteral("plugin"),
                                              ShellCorona::defaultShell());
 
         QCommandLineOption standaloneOption(QStringList() << QStringLiteral("a") << QStringLiteral("standalone"),
                                             i18n("Load plasmashell as a standalone application, needs the shell-plugin option to be specified"));
 
         QCommandLineOption replaceOption({QStringLiteral("replace")}, i18n("Replace an existing instance"));
 
         QCommandLineOption testOption(QStringList() << QStringLiteral("test"),
                                       i18n("Enables test mode and specifies the layout javascript file to set up the testing environment"),
                                       i18n("file"),
                                       QStringLiteral("layout.js"));
 
 #ifdef WITH_KUSERFEEDBACKCORE
         QCommandLineOption feedbackOption(QStringList() << QStringLiteral("feedback"), i18n("Lists the available options for user feedback"));
 #endif
         cliOptions.addOption(dbgOption);
         cliOptions.addOption(noRespawnOption);
         cliOptions.addOption(shellPluginOption);
         cliOptions.addOption(standaloneOption);
         cliOptions.addOption(testOption);
         cliOptions.addOption(replaceOption);
 #ifdef WITH_KUSERFEEDBACKCORE
         cliOptions.addOption(feedbackOption);
 #endif
 
         aboutData.setupCommandLine(&cliOptions);
         cliOptions.process(app);
         aboutData.processCommandLine(&cliOptions);
 
         // don't let the first KJob terminate us
         QCoreApplication::setQuitLockEnabled(false);
 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
         QGuiApplication::setFallbackSessionManagementEnabled(false);
 #endif
 
         auto disableSessionManagement = [](QSessionManager &sm) {
             sm.setRestartHint(QSessionManager::RestartNever);
         };
         QObject::connect(&app, &QGuiApplication::commitDataRequest, disableSessionManagement);
         QObject::connect(&app, &QGuiApplication::saveStateRequest, disableSessionManagement);
 
         corona = new ShellCorona(&app);
         corona->setShell(cliOptions.value(shellPluginOption));
         if (!corona->kPackage().isValid()) {
             qCritical() << "starting invalid corona" << corona->shell();
             return 1;
         }
 
 #ifdef WITH_KUSERFEEDBACKCORE
         auto userFeedback = new UserFeedback(corona, &app);
         if (cliOptions.isSet(feedbackOption)) {
             QTextStream(stdout) << userFeedback->describeDataSources();
             return 0;
         }
 #endif
 
         QObject::connect(QCoreApplication::instance(), &QCoreApplication::aboutToQuit, corona, &QObject::deleteLater);
 
         if (!cliOptions.isSet(noRespawnOption) && !cliOptions.isSet(testOption)) {
             KCrash::setFlags(KCrash::AutoRestart);
         }
 
         if (cliOptions.isSet(testOption)) {
             const QUrl layoutUrl = QUrl::fromUserInput(cliOptions.value(testOption), {}, QUrl::AssumeLocalFile);
             if (!layoutUrl.isLocalFile()) {
                 qCWarning(PLASMASHELL) << "ensure the layout file is local" << layoutUrl;
                 cliOptions.showHelp(1);
             }
 
             QStandardPaths::setTestModeEnabled(true);
             QDir(QStandardPaths::writableLocation(QStandardPaths::ConfigLocation)).removeRecursively();
             corona->setTestModeLayout(layoutUrl.toLocalFile());
 
             qApp->setProperty("org.kde.KActivities.core.disableAutostart", true);
 
             new CoronaTestHelper(corona);
         }
 
         if (cliOptions.isSet(standaloneOption)) {
             if (cliOptions.isSet(shellPluginOption)) {
                 app.setApplicationName(QStringLiteral("plasmashell_") + cliOptions.value(shellPluginOption));
                 app.setQuitOnLastWindowClosed(true);
 
                 KDBusService service(KDBusService::Unique);
                 // This will not leak, because corona deletes itself on window close
                 new StandaloneAppCorona(cliOptions.value(shellPluginOption));
                 return app.exec();
             } else {
                 cliOptions.showHelp(1);
             }
         } else {
             // Tells libnotificationmanager that we're the only true application that may own notification and job progress services
             qApp->setProperty("_plasma_dbus_master", true);
         }
 
         QObject::connect(corona, &ShellCorona::glInitializationFailed, &app, [&app]() {
             // scene graphs errors come from a thread
             // even though we process them in the main thread, app.exit could still process these events
             static bool s_multipleInvokations = false;
             if (s_multipleInvokations) {
                 return;
             }
             s_multipleInvokations = true;
 
             qCritical("Open GL context could not be created");
             auto configGroup = KSharedConfig::openConfig()->group("QtQuickRendererSettings");
             if (configGroup.readEntry("SceneGraphBackend") != QLatin1String("software")) {
                 configGroup.writeEntry("SceneGraphBackend", "software", KConfigBase::Global | KConfigBase::Persistent);
                 configGroup.sync();
                 QProcess::startDetached(QStringLiteral("plasmashell"), app.arguments());
             } else {
                 QCoreApplication::setAttribute(Qt::AA_ForceRasterWidgets);
                 QMessageBox::critical(nullptr,
                                       i18n("Plasma Failed To Start"),
                                       i18n("Plasma is unable to start as it could not correctly use OpenGL 2 or software fallback\nPlease check that your "
                                            "graphic drivers are set up correctly."));
             }
             app.exit(-1);
         });
         replace = cliOptions.isSet(replaceOption);
     }
 
     KDBusService service(KDBusService::Unique | KDBusService::StartupOption(replace ? KDBusService::Replace : 0));
 
     corona->init();
     SoftwareRendererNotifier::notifyIfRelevant();
 
     return app.exec();
 }