feat: able to show file name in window title

app/mainwindow.cpp

@@ -140,6 +140,15 @@ MainWindow::MainWindow(QWidget *parent)
         m_nextButton->setVisible(galleryFileCount > 1);
     });
 
+    connect(m_pm, &PlaylistManager::currentIndexChanged, this, [this]() {
+        int index;
+        QUrl url;
+        std::tie(index, url) = m_pm->currentFileUrl();
+        if (index != -1) {
+            this->setWindowTitle(url.fileName());
+        }
+    });
+
     QShortcut * fullscreenShorucut = new QShortcut(QKeySequence(QKeySequence::FullScreen), this);
     connect(fullscreenShorucut, &QShortcut::activated,
             this, &MainWindow::toggleFullscreen);

app/playlistmanager.cpp

@@ -99,6 +99,7 @@ void PlaylistManager::setCurrentFile(const QString & filePath)
         break;
     }
 
+    emit currentIndexChanged(m_currentIndex);
     emit loaded(m_playlist.count());
 }
 
@@ -106,6 +107,7 @@ void PlaylistManager::setCurrentIndex(int index)
 {
     if (index < 0 || index >= m_playlist.count()) return;
     m_currentIndex = index;
+    emit currentIndexChanged(m_currentIndex);
 }
 
 int PlaylistManager::appendFile(const QString &filePath)

app/playlistmanager.h

@@ -10,6 +10,8 @@ class PlaylistManager : public QObject
 {
     Q_OBJECT
 public:
+    Q_PROPERTY(int currentIndex MEMBER m_currentIndex NOTIFY currentIndexChanged)
+
     enum PlaylistType {
         PL_USERPLAYLIST, // Regular playlist, managed by user.
         PL_SAMEFOLDER // PlaylistManager managed playlist, loaded from files from same folder.
@@ -43,6 +45,7 @@ public:
 
 signals:
     void loaded(int length);
+    void currentIndexChanged(int index);
 
 private:
     QList<QUrl> m_playlist;