fix(core): use standard screen saver lock API

powerman/dimdisplayaction.cpp

@@ -19,10 +19,11 @@
  ***************************************************************************/
 
 #include "dimdisplayaction.h"
+#include "screenlocker_interface.h"
+
 #include <QSettings>
 #include <QTimer>
 #include <QDBusPendingCall>
-#include <QProcess>
 #include <QDebug>
 
 DimDisplayAction::DimDisplayAction(QObject *parent)
@@ -73,7 +74,11 @@ void DimDisplayAction::onIdleTimeout(int msec)
         }
 
         if (m_lock) {
-            QProcess::startDetached("cutefish-screenlocker", QStringList());
+            OrgFreedesktopScreenSaverInterface screenSaver(
+                QStringLiteral("org.freedesktop.ScreenSaver"),
+                QStringLiteral("/ScreenSaver"),
+                QDBusConnection::sessionBus());
+            screenSaver.Lock();
         }
 
     } else if (sec == (m_dimOnIdleTime * 3 / 4)) {

shutdown-ui/actions.cpp

@@ -21,12 +21,15 @@
 #include <QCommandLineParser>
 #include <QDBusInterface>
 #include <QApplication>
-#include <QProcess>
 
 const static QString s_dbusName = "com.cutefish.Session";
 const static QString s_pathName = "/Session";
 const static QString s_interfaceName = "com.cutefish.Session";
 
+const static QString s_screenSaverService = "org.freedesktop.ScreenSaver";
+const static QString s_screenSaverPath = "/ScreenSaver";
+const static QString s_screenSaverInterface = "org.freedesktop.ScreenSaver";
+
 Actions::Actions(QObject *parent)
     : QObject(parent)
 {
@@ -59,7 +62,13 @@ void Actions::reboot()
 
 void Actions::lockScreen()
 {
-    QProcess::startDetached("cutefish-screenlocker", QStringList());
+    QDBusInterface iface(s_screenSaverService,
+                         s_screenSaverPath,
+                         s_screenSaverInterface,
+                         QDBusConnection::sessionBus());
+    if (iface.isValid()) {
+        iface.call(QStringLiteral("Lock"));
+    }
     qApp->exit(0);
 }