127 lines
4.5 KiB
C++
127 lines
4.5 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: 2013 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "screenlockerwatcher.h"
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#include "wayland_server.h"
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#include <QFutureWatcher>
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#include <QtConcurrentRun>
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// dbus generated
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#include "screenlocker_interface.h"
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#include "kscreenlocker_interface.h"
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namespace KWin
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{
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KWIN_SINGLETON_FACTORY(ScreenLockerWatcher)
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static const QString SCREEN_LOCKER_SERVICE_NAME = QStringLiteral("org.freedesktop.ScreenSaver");
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ScreenLockerWatcher::ScreenLockerWatcher(QObject *parent)
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: QObject(parent)
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, m_serviceWatcher(new QDBusServiceWatcher(this))
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, m_locked(false)
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{
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if (waylandServer() && waylandServer()->hasScreenLockerIntegration()) {
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connect(waylandServer(), &WaylandServer::initialized, this, &ScreenLockerWatcher::initialize);
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} else {
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initialize();
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}
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}
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ScreenLockerWatcher::~ScreenLockerWatcher()
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{
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}
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void ScreenLockerWatcher::initialize()
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{
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connect(m_serviceWatcher, SIGNAL(serviceOwnerChanged(QString,QString,QString)), SLOT(serviceOwnerChanged(QString,QString,QString)));
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m_serviceWatcher->setWatchMode(QDBusServiceWatcher::WatchForOwnerChange);
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m_serviceWatcher->addWatchedService(SCREEN_LOCKER_SERVICE_NAME);
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// check whether service is registered
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QFutureWatcher<QDBusReply<bool> > *watcher = new QFutureWatcher<QDBusReply<bool> >(this);
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connect(watcher, SIGNAL(finished()), SLOT(serviceRegisteredQueried()));
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connect(watcher, SIGNAL(canceled()), watcher, SLOT(deleteLater()));
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watcher->setFuture(QtConcurrent::run(QDBusConnection::sessionBus().interface(),
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&QDBusConnectionInterface::isServiceRegistered,
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SCREEN_LOCKER_SERVICE_NAME));
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}
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void ScreenLockerWatcher::serviceOwnerChanged(const QString &serviceName, const QString &oldOwner, const QString &newOwner)
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{
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Q_UNUSED(oldOwner)
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if (serviceName != SCREEN_LOCKER_SERVICE_NAME) {
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return;
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}
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delete m_interface;
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m_interface = nullptr;
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delete m_kdeInterface;
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m_kdeInterface = nullptr;
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m_locked = false;
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if (!newOwner.isEmpty()) {
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m_interface = new OrgFreedesktopScreenSaverInterface(newOwner, QStringLiteral("/ScreenSaver"), QDBusConnection::sessionBus(), this);
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m_kdeInterface = new OrgKdeScreensaverInterface(newOwner, QStringLiteral("/ScreenSaver"), QDBusConnection::sessionBus(), this);
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connect(m_interface, SIGNAL(ActiveChanged(bool)), SLOT(setLocked(bool)));
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QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(m_interface->GetActive(), this);
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connect(watcher, SIGNAL(finished(QDBusPendingCallWatcher*)), SLOT(activeQueried(QDBusPendingCallWatcher*)));
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connect(m_kdeInterface, &OrgKdeScreensaverInterface::AboutToLock, this, &ScreenLockerWatcher::aboutToLock);
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}
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}
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void ScreenLockerWatcher::serviceRegisteredQueried()
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{
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QFutureWatcher<QDBusReply<bool> > *watcher = dynamic_cast<QFutureWatcher<QDBusReply<bool> > *>(sender());
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if (!watcher) {
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return;
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}
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const QDBusReply<bool> &reply = watcher->result();
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if (reply.isValid() && reply.value()) {
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QFutureWatcher<QDBusReply<QString> > *ownerWatcher = new QFutureWatcher<QDBusReply<QString> >(this);
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connect(ownerWatcher, SIGNAL(finished()), SLOT(serviceOwnerQueried()));
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connect(ownerWatcher, SIGNAL(canceled()), ownerWatcher, SLOT(deleteLater()));
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ownerWatcher->setFuture(QtConcurrent::run(QDBusConnection::sessionBus().interface(),
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&QDBusConnectionInterface::serviceOwner,
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SCREEN_LOCKER_SERVICE_NAME));
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}
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watcher->deleteLater();
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}
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void ScreenLockerWatcher::serviceOwnerQueried()
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{
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QFutureWatcher<QDBusReply<QString> > *watcher = dynamic_cast<QFutureWatcher<QDBusReply<QString> > *>(sender());
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if (!watcher) {
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return;
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}
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const QDBusReply<QString> reply = watcher->result();
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if (reply.isValid()) {
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serviceOwnerChanged(SCREEN_LOCKER_SERVICE_NAME, QString(), reply.value());
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}
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watcher->deleteLater();
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}
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void ScreenLockerWatcher::activeQueried(QDBusPendingCallWatcher *watcher)
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{
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QDBusPendingReply<bool> reply = *watcher;
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if (!reply.isError()) {
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setLocked(reply.value());
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}
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watcher->deleteLater();
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}
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void ScreenLockerWatcher::setLocked(bool activated)
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{
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if (m_locked == activated) {
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return;
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}
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m_locked = activated;
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emit locked(m_locked);
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}
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}
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