kwin/screenlockerwatcher.h
David Edmundson 3604aaf74c Close screen grabbing effect when screensaver starts
Summary:
The screenlock fails on X11 if it can't grab the keyboard.

We can't nicely solve the generic case. We can solve the common case of
a kwin effect being active.

It's not critical, arguably not even desirable to have these effects
persist after the screen is locked through an external trigger. We can
just close the effect early.

Key grabs have to be relased early before the close animation completes
so that the locker doesn't have a race based on animation times.

It's not ideal, but no worse than the current state for not much work.

BUG: 234153

Test Plan:
locked screen on a timer
opened various effects

Reviewers: #kwin, zzag

Reviewed By: #kwin, zzag

Subscribers: ngraham, zzag, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D20890
2019-06-23 18:00:47 +02:00

63 lines
1.9 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2013 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#ifndef KWIN_SCREENLOCKERWATCHER_H
#define KWIN_SCREENLOCKERWATCHER_H
#include <QObject>
#include <kwinglobals.h>
class OrgFreedesktopScreenSaverInterface;
class OrgKdeScreensaverInterface;
class QDBusServiceWatcher;
class QDBusPendingCallWatcher;
namespace KWin
{
class KWIN_EXPORT ScreenLockerWatcher : public QObject
{
Q_OBJECT
public:
virtual ~ScreenLockerWatcher();
bool isLocked() const {
return m_locked;
}
Q_SIGNALS:
void locked(bool locked);
void aboutToLock();
private Q_SLOTS:
void setLocked(bool activated);
void activeQueried(QDBusPendingCallWatcher *watcher);
void serviceOwnerChanged(const QString &serviceName, const QString &oldOwner, const QString &newOwner);
void serviceRegisteredQueried();
void serviceOwnerQueried();
private:
void initialize();
OrgFreedesktopScreenSaverInterface *m_interface = nullptr;
OrgKdeScreensaverInterface *m_kdeInterface = nullptr;
QDBusServiceWatcher *m_serviceWatcher;
bool m_locked;
KWIN_SINGLETON(ScreenLockerWatcher)
};
}
#endif