fix: refine playback shutdown and danmaku sizing

src/qEmbyApp/mainwindow.cpp

@@ -101,23 +101,8 @@ MainWindow::MainWindow(QWidget *parent)
             });
         }
     });
-    connect(m_trayManager, &TrayManager::quitRequested, this, [this]() {
-        m_realQuit = true; 
-        
-        if (auto *player = m_homeView->activePlayerView()) {
-            player->stopAndReport();
-            
-            QElapsedTimer wait;
-            wait.start();
-            while (wait.elapsed() < 500) {
-                QCoreApplication::processEvents(QEventLoop::AllEvents, 50);
-            }
-        }
-        if(m_core && m_core->authService()) {
-            m_core->authService()->logout();
-        }
-        qApp->quit(); 
-    });
+    connect(m_trayManager, &TrayManager::quitRequested, this,
+            &MainWindow::requestApplicationQuit);
     
 
     
@@ -1045,6 +1030,46 @@ void MainWindow::navigateToLogin() {
     fadeIn->start(QAbstractAnimation::DeleteWhenStopped);
 }
 
+void MainWindow::requestApplicationQuit()
+{
+    if (m_quitPending) {
+        return;
+    }
+
+    m_quitPending = true;
+    m_realQuit = true;
+    const bool stoppedPlayback = stopActivePlaybackForQuit();
+    if (stoppedPlayback) {
+        QTimer::singleShot(500, this, &MainWindow::finishApplicationQuit);
+        return;
+    }
+
+    finishApplicationQuit();
+}
+
+bool MainWindow::stopActivePlaybackForQuit()
+{
+    if (!m_homeView) {
+        return false;
+    }
+
+    auto *player = m_homeView->activePlayerView();
+    if (!player) {
+        return false;
+    }
+
+    player->stopAndReport();
+    return true;
+}
+
+void MainWindow::finishApplicationQuit()
+{
+    if (m_core && m_core->authService()) {
+        m_core->authService()->logout();
+    }
+    qApp->quit();
+}
+
 bool MainWindow::eventFilter(QObject *watched, QEvent *event)
 {
     if (watched == qApp && event->type() == QEvent::ApplicationStateChange) {
@@ -1172,16 +1197,11 @@ void MainWindow::closeEvent(QCloseEvent *event)
         hide();             
         event->ignore();    
     } else {
-        
-        if (auto *player = m_homeView->activePlayerView()) {
-            player->stopAndReport();
-            
-            QElapsedTimer wait;
-            wait.start();
-            while (wait.elapsed() < 500) {
-                QCoreApplication::processEvents(QEventLoop::AllEvents, 50);
-            }
+        if (!m_quitPending) {
+            requestApplicationQuit();
+            event->ignore();
+            return;
         }
-        event->accept();    
+        event->accept();
     }
 }