fix codestyle and use C++11 keywords

src/core/ScreenLockListener.h

@@ -28,7 +28,7 @@ public:
     ScreenLockListener(QWidget* parent = nullptr);
     ~ScreenLockListener();
 
-Q_SIGNALS:
+signals:
     void screenLocked();
 
 private:

src/core/ScreenLockListenerDBus.cpp

@@ -63,25 +63,25 @@ ScreenLockListenerDBus::ScreenLockListenerDBus(QWidget *parent):
 void ScreenLockListenerDBus::gnomeSessionStatusChanged(uint status)
 {
     if (status != 0) {
-        Q_EMIT screenLocked();
+        emit screenLocked();
     }
 }
 
 void ScreenLockListenerDBus::logindPrepareForSleep(bool beforeSleep)
 {
     if (beforeSleep) {
-        Q_EMIT screenLocked();
+        emit screenLocked();
     }
 }
 
 void ScreenLockListenerDBus::unityLocked()
 {
-    Q_EMIT screenLocked();
+    emit screenLocked();
 }
 
 void ScreenLockListenerDBus::freedesktopScreenSaver(bool status)
 {
     if (status) {
-        Q_EMIT screenLocked();
+        emit screenLocked();
     }
 }

src/core/ScreenLockListenerDBus.h

@@ -27,7 +27,7 @@ class ScreenLockListenerDBus : public ScreenLockListenerPrivate
 public:
     explicit ScreenLockListenerDBus(QWidget *parent = 0);
 
-private Q_SLOTS:
+private slots:
     void gnomeSessionStatusChanged(uint status);
     void logindPrepareForSleep(bool beforeSleep);
     void unityLocked();

src/core/ScreenLockListenerMac.cpp

@@ -59,5 +59,5 @@ ScreenLockListenerMac::ScreenLockListenerMac(QWidget* parent)
 
 void ScreenLockListenerMac::onSignalReception()
 {
-    Q_EMIT screenLocked();
+    emit screenLocked();
 }

src/core/ScreenLockListenerPrivate.cpp

@@ -36,11 +36,9 @@ ScreenLockListenerPrivate* ScreenLockListenerPrivate::instance(QWidget* parent)
 #if defined(Q_OS_OSX)
     Q_UNUSED(parent);
     return ScreenLockListenerMac::instance();
-#endif
-#if defined(Q_OS_LINUX)
+#elif defined(Q_OS_LINUX)
     return new ScreenLockListenerDBus(parent);
-#endif
-#if defined(Q_OS_WIN)
+#elif defined(Q_OS_WIN)
     return new ScreenLockListenerWin(parent);
 #endif
 }

src/core/ScreenLockListenerPrivate.h

@@ -29,7 +29,7 @@ public:
 protected:
     ScreenLockListenerPrivate(QWidget* parent = 0);
 
-Q_SIGNALS:
+signals:
     void screenLocked();
 };
 

src/core/ScreenLockListenerWin.cpp

@@ -67,22 +67,22 @@ bool ScreenLockListenerWin::nativeEventFilter(const QByteArray& eventType, void*
                 if (setting != nullptr && setting->PowerSetting == GUID_LIDSWITCH_STATE_CHANGE) {
                     const DWORD* state = reinterpret_cast<const DWORD*>(&setting->Data);
                     if (*state == 0) {
-                        Q_EMIT screenLocked();
+                        emit screenLocked();
                         return true;
                     }
                 }
             } else if (m->wParam == PBT_APMSUSPEND) {
-                Q_EMIT screenLocked();
+                emit screenLocked();
                 return true;
             }
         }
         if (m->message == WM_WTSSESSION_CHANGE) {
             if (m->wParam == WTS_CONSOLE_DISCONNECT) {
-                Q_EMIT screenLocked();
+                emit screenLocked();
                 return true;
             }
             if (m->wParam == WTS_SESSION_LOCK) {
-                Q_EMIT screenLocked();
+                emit screenLocked();
                 return true;
             }
         }