7fffe99328
Due to being a compositor, kwin has to conform to some certain interfaces. It means a lot of virtual functions and function tables to integrate with C APIs. Naturally, we not always want to use every argument in such functions. Since we get -Wunused-parameter from -Wall, we have to plumb those unused arguments in order to suppress compiler warnings at the moment. However, I don't think that extra work is worth it. We cannot change or alter prototypes in any way to fix the warning the desired way. Q_UNUSED and similar macros are not good indicators of whether an argument is used too, we tend to overlook putting or removing those macros. I've also noticed that Q_UNUSED are not used to guide us with the removal no longer needed parameters. Therefore, I think it's worth adding -Wno-unused-parameter compiler option to stop the compiler producing warnings about unused parameters. It changes nothing except that we don't need to put Q_UNUSED anymore, which can be really cumbersome sometimes. Note that it doesn't affect unused variables, you'll still get a -Wunused-variable compiler warning if a variable is unused.
85 lines
2.6 KiB
C++
85 lines
2.6 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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// dbus generated
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#include "kscreenlocker_interface.h"
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#include "screenlocker_interface.h"
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namespace KWin
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{
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static const QString SCREEN_LOCKER_SERVICE_NAME = QStringLiteral("org.freedesktop.ScreenSaver");
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ScreenLockerWatcher::ScreenLockerWatcher()
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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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void ScreenLockerWatcher::initialize()
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{
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connect(m_serviceWatcher, &QDBusServiceWatcher::serviceOwnerChanged, this, &ScreenLockerWatcher::serviceOwnerChanged);
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m_serviceWatcher->setWatchMode(QDBusServiceWatcher::WatchForOwnerChange);
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m_serviceWatcher->addWatchedService(SCREEN_LOCKER_SERVICE_NAME);
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m_interface = new OrgFreedesktopScreenSaverInterface(SCREEN_LOCKER_SERVICE_NAME, QStringLiteral("/ScreenSaver"), QDBusConnection::sessionBus(), this);
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m_kdeInterface = new OrgKdeScreensaverInterface(SCREEN_LOCKER_SERVICE_NAME, QStringLiteral("/ScreenSaver"), QDBusConnection::sessionBus(), this);
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connect(m_interface, &OrgFreedesktopScreenSaverInterface::ActiveChanged,
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this, &ScreenLockerWatcher::setLocked);
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connect(m_kdeInterface, &OrgKdeScreensaverInterface::AboutToLock, this, &ScreenLockerWatcher::aboutToLock);
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queryActive();
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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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m_locked = false;
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if (!newOwner.isEmpty()) {
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queryActive();
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}
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}
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void ScreenLockerWatcher::queryActive()
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{
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QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(m_interface->GetActive(), this);
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connect(watcher, &QDBusPendingCallWatcher::finished,
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this, &ScreenLockerWatcher::activeQueried);
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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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Q_EMIT locked(m_locked);
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}
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bool ScreenLockerWatcher::isLocked() const
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{
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return m_locked;
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}
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}
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