fix: cursor is always in busy state sometimes

see #250

I give it a timeout to workaround the situation a little bit.

Change-Id: I4b715b7455418caccb8416b446e92a55e80e47d3

src/widgets/dapplication.cpp

@@ -79,16 +79,23 @@ DApplicationPrivate::DApplicationPrivate(DApplication *q) :
 {
 #ifdef Q_OS_LINUX
     StartupNotificationMonitor *monitor = StartupNotificationMonitor::instance();
-    QObject::connect(monitor, &StartupNotificationMonitor::appStartup, [this, q](const QString id) {
-        m_monitoredStartupApps.append(id);
-        q->setOverrideCursor(Qt::WaitCursor);
-    });
-    QObject::connect(monitor, &StartupNotificationMonitor::appStartupCompleted, [this, q](const QString id) {
+    auto cancelNotification = [this, q](const QString id) {
         m_monitoredStartupApps.removeAll(id);
         if (m_monitoredStartupApps.isEmpty()) {
             q->setOverrideCursor(Qt::ArrowCursor);
         }
+    };
+    QObject::connect(monitor, &StartupNotificationMonitor::appStartup, [this, q, &cancelNotification](const QString id) {
+        m_monitoredStartupApps.append(id);
+        q->setOverrideCursor(Qt::WaitCursor);
+        // Set a timeout of 15s in case that some apps like pamac-tray started
+        // with StartupNotify but don't show a window after startup finished.
+        QTimer::singleShot(15 * 1000, q, [id, &cancelNotification](){
+            cancelNotification(id);
+        });
     });
+    QObject::connect(monitor, &StartupNotificationMonitor::appStartupCompleted,
+                     q, cancelNotification);
 #endif
 }