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kscreensaver: watch the xscreensaver state and emit ActiveChanged() signal

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Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
This commit is contained in:
Ivailo Monev 2022-04-13 03:10:54 +03:00
parent fcbc69b222
commit 5e42019ac2
2 changed files with 54 additions and 7 deletions
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54
kscreensaver/kscreensaver.cpp
View file

@ -19,18 +19,14 @@
#include "kscreensaver.h"
#include "screensaveradaptor.h"
#include <QCoreApplication>
#include <QProcess>
#include <kdebug.h>
#include <kidletime.h>
static const uint ChangeScreenSettings = 4;
// TODO: disable via config
// TODO: watch the xscreensaver state and emit ActiveChanged() signal
KScreenSaver::KScreenSaver(QObject *parent)
: QObject(parent),
m_xscreensaver(nullptr),
m_inhibitionscounter(0)
{
(void)new ScreenSaverAdaptor(this);
@ -42,11 +38,11 @@ KScreenSaver::KScreenSaver(QObject *parent)
if (service) {
kDebug() << "kscreensaver is online";
} else {
kWarning() << "could not register object" << connection.lastError().message();
kWarning() << "Could not register service" << connection.lastError().message();
return;
}
} else {
kWarning() << "could not register object" << connection.lastError().message();
kWarning() << "Could not register object" << connection.lastError().message();
return;
}
@ -54,6 +50,23 @@ KScreenSaver::KScreenSaver(QObject *parent)
QString::fromLatin1("xscreensaver"),
QStringList() << QString::fromLatin1("-nosplash")
);
m_xscreensaver = new QProcess(this);
connect(m_xscreensaver, SIGNAL(readyReadStandardOutput()), this, SLOT(slotXScreenSaverOutput()));
connect(m_xscreensaver, SIGNAL(readyReadStandardError()), this, SLOT(slotXScreenSaverError()));
m_xscreensaver->start(
QString::fromLatin1("xscreensaver-command"),
QStringList() << QString::fromLatin1("-watch")
);
}
KScreenSaver::~KScreenSaver()
{
if (m_xscreensaver) {
disconnect(m_xscreensaver, SIGNAL(readyReadStandardOutput()), this, SLOT(slotXScreenSaverOutput()));
disconnect(m_xscreensaver, SIGNAL(readyReadStandardError()), this, SLOT(slotXScreenSaverError()));
m_xscreensaver->deleteLater();
}
}
bool KScreenSaver::GetActive()
@ -165,3 +178,30 @@ void KScreenSaver::UnThrottle(uint cookie)
// was not implemented before either
Q_UNUSED(cookie);
}
void KScreenSaver::slotXScreenSaverOutput()
{
// qDebug() << Q_FUNC_INFO;
const QByteArray xscreensaverdata = m_xscreensaver->readAllStandardOutput();
foreach (const QByteArray &xscreensaverline, xscreensaverdata.split('\n')) {
// qDebug() << Q_FUNC_INFO << xscreensaverline;
if (xscreensaverline.isEmpty()) {
continue;
}
if (xscreensaverline.startsWith("BLANK") || xscreensaverline.startsWith("LOCK")) {
emit ActiveChanged(true);
} else if (xscreensaverline.startsWith("UNBLANK")) {
emit ActiveChanged(false);
}
}
}
void KScreenSaver::slotXScreenSaverError()
{
// qDebug() << Q_FUNC_INFO;
const QByteArray xscreensaverdata = m_xscreensaver->readAllStandardError();
kWarning() << xscreensaverdata;
}
#include "moc_kscreensaver.cpp"

7
kscreensaver/kscreensaver.h
View file

@ -20,6 +20,7 @@
#define KSCREENSAVER_H
#include <QObject>
#include <QProcess>
#include <QElapsedTimer>
class KScreenSaver : public QObject
@ -27,6 +28,7 @@ class KScreenSaver : public QObject
Q_OBJECT
public:
KScreenSaver(QObject *parent = nullptr);
~KScreenSaver();
public Q_SLOTS:
bool GetActive();
@ -46,7 +48,12 @@ public Q_SLOTS:
Q_SIGNALS:
void ActiveChanged(bool active);
private Q_SLOTS:
void slotXScreenSaverOutput();
void slotXScreenSaverError();
private:
QProcess* m_xscreensaver;
QElapsedTimer m_activetimer;
uint m_inhibitionscounter;
QList<uint> m_inhibitions;