432cfb44c0
If the Xwayland process has crashed due to some bug, the user should still be able to start applications in Xwayland mode. There is no reason to restart the whole session just to be able to launch some application that doesn't have native support for Wayland.
110 lines
2.9 KiB
C++
110 lines
2.9 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2019 Roman Gilg <subdiff@gmail.com>
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SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef KWIN_XWL_XWAYLAND
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#define KWIN_XWL_XWAYLAND
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#include "xwayland_interface.h"
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#include <QProcess>
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#include <QSocketNotifier>
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namespace KWin
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{
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class ApplicationWaylandAbstract;
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namespace Xwl
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{
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class Xwayland : public XwaylandInterface
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{
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Q_OBJECT
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public:
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Xwayland(ApplicationWaylandAbstract *app, QObject *parent = nullptr);
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~Xwayland() override;
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/**
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* Returns the associated Xwayland process or @c null if the Xwayland server is inactive.
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*/
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QProcess *process() const override;
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public Q_SLOTS:
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/**
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* Starts the Xwayland server.
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*
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* This method will spawn an Xwayland process and will establish a new XCB connection to it.
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* If a fatal error has occurred during the startup, the criticalError() signal is going to
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* be emitted. If the Xwayland server has started successfully, the started() signal will be
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* emitted.
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*
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* @see started(), stop()
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*/
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void start();
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/**
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* Stops the Xwayland server.
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*
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* This method will destroy the existing XCB connection as well all connected X11 clients.
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*
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* A SIGTERM signal will be sent to the Xwayland process. If Xwayland doesn't shut down
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* within a reasonable amount of time (5 seconds), a SIGKILL signal will be sent and thus
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* the process will be killed for good.
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*
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* If the Xwayland process crashes, the server will be stopped automatically.
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*
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* @see start()
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*/
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void stop();
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/**
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* Restarts the Xwayland server. This method is equivalent to calling stop() and start().
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*/
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void restart();
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Q_SIGNALS:
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/**
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* This signal is emitted when the Xwayland server has been started successfully and it is
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* ready to accept and manage X11 clients.
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*/
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void started();
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void criticalError(int code);
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private Q_SLOTS:
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void dispatchEvents();
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void resetCrashCount();
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void handleXwaylandStarted();
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void handleXwaylandFinished(int exitCode, QProcess::ExitStatus exitStatus);
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void handleXwaylandCrashed();
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void handleXwaylandError(QProcess::ProcessError error);
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private:
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void installSocketNotifier();
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void uninstallSocketNotifier();
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void createX11Connection();
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void destroyX11Connection();
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void continueStartupWithX();
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DragEventReply dragMoveFilter(Toplevel *target, const QPoint &pos) override;
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int m_displayFileDescriptor = -1;
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int m_xcbConnectionFd = -1;
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QProcess *m_xwaylandProcess = nullptr;
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QSocketNotifier *m_socketNotifier = nullptr;
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QTimer *m_resetCrashCountTimer = nullptr;
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ApplicationWaylandAbstract *m_app;
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int m_crashCount = 0;
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Q_DISABLE_COPY(Xwayland)
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};
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} // namespace Xwl
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} // namespace KWin
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#endif
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