Qt: Add a signal when the game list selection is changed

src/duckstation-qt/gamelistwidget.cpp

@@ -269,6 +269,8 @@ void GameListWidget::initialize(QtHostInterface* host_interface)
   m_table_view->resizeColumnsToContents();
 
   connect(m_table_view, &QTableView::doubleClicked, this, &GameListWidget::onTableViewItemDoubleClicked);
+  connect(m_table_view->selectionModel(), &QItemSelectionModel::currentChanged, this,
+          &GameListWidget::onSelectionModelCurrentChanged);
 
   insertWidget(0, m_table_view);
   setCurrentIndex(0);
@@ -289,6 +291,19 @@ void GameListWidget::onTableViewItemDoubleClicked(const QModelIndex& index)
   emit bootEntryRequested(&entry);
 }
 
+void GameListWidget::onSelectionModelCurrentChanged(const QModelIndex& current, const QModelIndex& previous)
+{
+  const QModelIndex source_index = m_table_sort_model->mapToSource(current);
+  if (!source_index.isValid() || source_index.row() >= static_cast<int>(m_game_list->GetEntryCount()))
+  {
+    emit entrySelected(nullptr);
+    return;
+  }
+
+  const GameList::GameListEntry& entry = m_game_list->GetEntries().at(source_index.row());
+  emit entrySelected(&entry);
+}
+
 void GameListWidget::resizeEvent(QResizeEvent* event)
 {
   QStackedWidget::resizeEvent(event);

src/duckstation-qt/gamelistwidget.h

@@ -19,11 +19,13 @@ public:
   void initialize(QtHostInterface* host_interface);
 
 Q_SIGNALS:
-  void bootEntryRequested(const GameList::GameListEntry& entry);
+  void entrySelected(const GameList::GameListEntry* entry);
+  void bootEntryRequested(const GameList::GameListEntry* entry);
 
 private Q_SLOTS:
   void onGameListRefreshed();
   void onTableViewItemDoubleClicked(const QModelIndex& index);
+  void onSelectionModelCurrentChanged(const QModelIndex& current, const QModelIndex& previous);
 
 protected:
   void resizeEvent(QResizeEvent* event);

src/duckstation-qt/mainwindow.cpp

@@ -260,9 +260,9 @@ void MainWindow::connectSignals()
   connect(m_host_interface, &QtHostInterface::emulationPaused, this, &MainWindow::onEmulationPaused);
   connect(m_host_interface, &QtHostInterface::toggleFullscreenRequested, this, &MainWindow::toggleFullscreen);
 
-  connect(m_game_list_widget, &GameListWidget::bootEntryRequested, [this](const GameList::GameListEntry& entry) {
+  connect(m_game_list_widget, &GameListWidget::bootEntryRequested, [this](const GameList::GameListEntry* entry) {
     // if we're not running, boot the system, otherwise swap discs
-    QString path = QString::fromStdString(entry.path);
+    QString path = QString::fromStdString(entry->path);
     if (!m_emulation_running)
     {
       m_host_interface->bootSystem(path, QString());