697ea3ae00
If we try to query before WaylandServer created the KSldApp the service owner change is never delivered. Thus a delay till we know that the service is there on Wayland. On X11 the initialization can be done directly. To know when the WaylandServer is fully initialized an additional signal is added to WaylandServer.
133 lines
4.9 KiB
C++
133 lines
4.9 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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Copyright (C) 2013 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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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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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_interface(NULL)
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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 = NULL;
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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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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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}
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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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