Qt: Implement render-to-seperate-window and render-to-main toggle

src/duckstation-qt/generalsettingswidget.cpp

@@ -9,6 +9,7 @@ GeneralSettingsWidget::GeneralSettingsWidget(QtHostInterface* host_interface, QW
 
   SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.pauseOnStart, "Main/StartPaused");
   SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.startFullscreen, "Main/StartFullscreen");
+  SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.renderToMain, "Main/RenderToMainWindow");
   SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.saveStateOnExit, "Main/SaveStateOnExit");
   SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.confirmPowerOff, "Main/ConfirmPowerOff");
   SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.showOSDMessages, "Display/ShowOSDMessages");
@@ -29,16 +30,19 @@ GeneralSettingsWidget::GeneralSettingsWidget(QtHostInterface* host_interface, QW
   onEnableSpeedLimiterStateChanged();
   onEmulationSpeedValueChanged(m_ui.emulationSpeed->value());
 
-  dialog->registerWidgetHelp(m_ui.pauseOnStart, "Pause On Start", "Unchecked",
-                             "Pauses the emulator when a game is started.");
-  dialog->registerWidgetHelp(m_ui.startFullscreen, "Start Fullscreen", "Unchecked",
-                             "Automatically switches to fullscreen mode when a game is started.");
-  dialog->registerWidgetHelp(m_ui.saveStateOnExit, "Save State On Exit", "Checked",
-                             "Automatically saves the emulator state when powering down or exiting. You can then "
-                             "resume directly from where you left off next time.");
   dialog->registerWidgetHelp(m_ui.confirmPowerOff, "Confirm Power Off", "Checked",
                              "Determines whether a prompt will be displayed to confirm shutting down the emulator/game "
                              "when the hotkey is pressed.");
+  dialog->registerWidgetHelp(m_ui.saveStateOnExit, "Save State On Exit", "Checked",
+                             "Automatically saves the emulator state when powering down or exiting. You can then "
+                             "resume directly from where you left off next time.");
+  dialog->registerWidgetHelp(m_ui.startFullscreen, "Start Fullscreen", "Unchecked",
+                             "Automatically switches to fullscreen mode when a game is started.");
+  dialog->registerWidgetHelp(m_ui.renderToMain, "Render To Main Window", "Checked",
+                             "Renders the display of the simulated console to the main window of the application, over "
+                             "the game list. If unchecked, the display will render in a seperate window.");
+  dialog->registerWidgetHelp(m_ui.pauseOnStart, "Pause On Start", "Unchecked",
+                             "Pauses the emulator when a game is started.");
   dialog->registerWidgetHelp(m_ui.enableSpeedLimiter, "Enable Speed Limiter", "Checked",
                              "Throttles the emulation speed to the chosen speed above. If unchecked, the emulator will "
                              "run as fast as possible, which may not be playable.");

src/duckstation-qt/generalsettingswidget.ui

@@ -33,30 +33,37 @@
      </property>
      <layout class="QGridLayout" name="formLayout_4">
       <item row="0" column="0">
-       <widget class="QCheckBox" name="pauseOnStart">
+       <widget class="QCheckBox" name="confirmPowerOff">
         <property name="text">
-         <string>Pause On Start</string>
+         <string>Confirm Power Off</string>
         </property>
        </widget>
       </item>
       <item row="0" column="1">
-       <widget class="QCheckBox" name="startFullscreen">
-        <property name="text">
-         <string>Start Fullscreen</string>
-        </property>
-       </widget>
-      </item>
-      <item row="1" column="0">
        <widget class="QCheckBox" name="saveStateOnExit">
         <property name="text">
          <string>Save State On Exit</string>
         </property>
        </widget>
       </item>
-      <item row="1" column="1">
+      <item row="1" column="0">
-       <widget class="QCheckBox" name="confirmPowerOff">
+       <widget class="QCheckBox" name="startFullscreen">
         <property name="text">
-         <string>Confirm Power Off</string>
+         <string>Start Fullscreen</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="1">
+       <widget class="QCheckBox" name="renderToMain">
+        <property name="text">
+         <string>Render To Main Window</string>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="0">
+       <widget class="QCheckBox" name="pauseOnStart">
+        <property name="text">
+         <string>Pause On Start</string>
         </property>
        </widget>
       </item>

src/duckstation-qt/mainwindow.cpp

@@ -60,18 +60,34 @@ bool MainWindow::confirmMessage(const QString& message)
   return (result == QMessageBox::Yes);
 }
 
-void MainWindow::createDisplayWindow(QThread* worker_thread, bool use_debug_device)
+void MainWindow::createDisplayWindow(QThread* worker_thread, bool use_debug_device, bool fullscreen,
+                                     bool render_to_main)
 {
   DebugAssert(!m_display_widget);
 
   m_display_widget = m_host_interface->createDisplayWidget();
+  m_display_widget->setWindowTitle(windowTitle());
+  m_display_widget->setWindowIcon(windowIcon());
   DebugAssert(m_display_widget);
 
   m_display_widget->setFocusPolicy(Qt::StrongFocus);
+
+  if (fullscreen)
+  {
+    m_display_widget->showFullScreen();
+    m_display_widget->setCursor(Qt::BlankCursor);
+  }
+  else if (!render_to_main)
+  {
+    m_display_widget->showNormal();
+  }
+  else
+  {
     m_ui.mainContainer->insertWidget(1, m_display_widget);
+    switchToEmulationView();
+  }
 
   // we need the surface visible.. this might be able to be replaced with something else
-  switchToEmulationView();
   QCoreApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
 
   m_display_widget->createDeviceContext(worker_thread, use_debug_device);
@@ -81,49 +97,68 @@ void MainWindow::destroyDisplayWindow()
 {
   DebugAssert(m_display_widget);
 
-  const bool was_fullscreen = m_display_widget->isFullScreen();
+  if (m_display_widget->isFullScreen())
-  if (was_fullscreen)
+    m_display_widget->showNormal();
-    toggleFullscreen();
 
+  if (m_display_widget->parent())
+  {
+    m_ui.mainContainer->removeWidget(m_display_widget);
     switchToGameListView();
+  }
 
   // recreate the display widget using the potentially-new renderer
-  m_ui.mainContainer->removeWidget(m_display_widget);
   delete m_display_widget;
   m_display_widget = nullptr;
 }
 
-void MainWindow::setFullscreen(bool fullscreen)
+void MainWindow::updateDisplayWindow(bool fullscreen, bool render_to_main)
 {
-  if (fullscreen == m_display_widget->isFullScreen())
+  const bool is_fullscreen = m_display_widget->isFullScreen();
+  const bool is_rendering_to_main = (!is_fullscreen && m_display_widget->parent());
+  if (fullscreen == is_fullscreen && is_rendering_to_main == render_to_main)
     return;
 
-  if (fullscreen)
+  if (fullscreen || !render_to_main)
+  {
+    if (m_display_widget->parent())
     {
       m_ui.mainContainer->setCurrentIndex(0);
       m_ui.mainContainer->removeWidget(m_display_widget);
       m_display_widget->setParent(nullptr);
+      switchToGameListView();
+    }
+
+    if (fullscreen)
+    {
       m_display_widget->showFullScreen();
       m_display_widget->setCursor(Qt::BlankCursor);
     }
     else
     {
+      // if we don't position it, it ends up in the top-left corner with the title bar obscured
       m_display_widget->setCursor(QCursor());
+      m_display_widget->showNormal();
+      m_display_widget->move(pos());
+    }
+  }
+  else
+  {
+    // render-to-main
+    if (!m_display_widget->parent())
+    {
       m_ui.mainContainer->insertWidget(1, m_display_widget);
       m_ui.mainContainer->setCurrentIndex(1);
     }
 
+    m_display_widget->setCursor(QCursor());
+  }
+
   m_display_widget->setFocus();
 
   QSignalBlocker blocker(m_ui.actionFullscreen);
   m_ui.actionFullscreen->setChecked(fullscreen);
 }
 
-void MainWindow::toggleFullscreen()
-{
-  setFullscreen(!m_display_widget->isFullScreen());
-}
-
 void MainWindow::focusDisplayWidget()
 {
   if (m_ui.mainContainer->currentIndex() != 1)
@@ -176,6 +211,9 @@ void MainWindow::onRunningGameChanged(const QString& filename, const QString& ga
     setWindowTitle(tr("DuckStation"));
   else
     setWindowTitle(game_title);
+
+  if (m_display_widget)
+    m_display_widget->setWindowTitle(windowTitle());
 }
 
 void MainWindow::onStartDiscActionTriggered()
@@ -419,6 +457,7 @@ void MainWindow::switchToGameListView()
 
 void MainWindow::switchToEmulationView()
 {
+  if (m_display_widget->parent())
     m_ui.mainContainer->setCurrentIndex(1);
   m_display_widget->setFocus();
 }
@@ -445,7 +484,7 @@ void MainWindow::connectSignals()
   connect(m_ui.actionLoadState, &QAction::triggered, this, [this]() { m_ui.menuLoadState->exec(QCursor::pos()); });
   connect(m_ui.actionSaveState, &QAction::triggered, this, [this]() { m_ui.menuSaveState->exec(QCursor::pos()); });
   connect(m_ui.actionExit, &QAction::triggered, this, &MainWindow::close);
-  connect(m_ui.actionFullscreen, &QAction::triggered, this, &MainWindow::toggleFullscreen);
+  connect(m_ui.actionFullscreen, &QAction::triggered, m_host_interface, &QtHostInterface::toggleFullscreen);
   connect(m_ui.actionSettings, &QAction::triggered, [this]() { doSettings(SettingsDialog::Category::Count); });
   connect(m_ui.actionGeneralSettings, &QAction::triggered,
           [this]() { doSettings(SettingsDialog::Category::GeneralSettings); });
@@ -472,8 +511,8 @@ void MainWindow::connectSignals()
   connect(m_host_interface, &QtHostInterface::createDisplayWindowRequested, this, &MainWindow::createDisplayWindow,
           Qt::BlockingQueuedConnection);
   connect(m_host_interface, &QtHostInterface::destroyDisplayWindowRequested, this, &MainWindow::destroyDisplayWindow);
-  connect(m_host_interface, &QtHostInterface::setFullscreenRequested, this, &MainWindow::setFullscreen);
+  connect(m_host_interface, &QtHostInterface::updateDisplayWindowRequested, this, &MainWindow::updateDisplayWindow,
-  connect(m_host_interface, &QtHostInterface::toggleFullscreenRequested, this, &MainWindow::toggleFullscreen);
+          Qt::BlockingQueuedConnection);
   connect(m_host_interface, &QtHostInterface::focusDisplayWidgetRequested, this, &MainWindow::focusDisplayWidget);
   connect(m_host_interface, &QtHostInterface::emulationStarted, this, &MainWindow::onEmulationStarted);
   connect(m_host_interface, &QtHostInterface::emulationStopped, this, &MainWindow::onEmulationStopped);

src/duckstation-qt/mainwindow.h

@@ -28,10 +28,9 @@ private Q_SLOTS:
   void reportError(const QString& message);
   void reportMessage(const QString& message);
   bool confirmMessage(const QString& message);
-  void createDisplayWindow(QThread* worker_thread, bool use_debug_device);
+  void createDisplayWindow(QThread* worker_thread, bool use_debug_device, bool fullscreen, bool render_to_main);
   void destroyDisplayWindow();
-  void setFullscreen(bool fullscreen);
+  void updateDisplayWindow(bool fullscreen, bool render_to_main);
-  void toggleFullscreen();
   void focusDisplayWidget();
   void onEmulationStarted();
   void onEmulationStopped();

src/duckstation-qt/qtdisplaywidget.cpp

@@ -145,6 +145,13 @@ bool QtDisplayWidget::event(QEvent* event)
       return true;
     }
 
+    case QEvent::Close:
+    {
+      m_host_interface->synchronousPowerOffSystem();
+      QWidget::event(event);
+      return true;
+    }
+
     case QEvent::WindowStateChange:
     {
       QWidget::event(event);

src/duckstation-qt/qthostinterface.cpp

@@ -67,11 +67,14 @@ void QtHostInterface::ReportError(const char* message)
 {
   HostInterface::ReportError(message);
 
-  emit setFullscreenRequested(false);
+  const bool was_fullscreen = m_is_fullscreen;
+  if (was_fullscreen)
+    SetFullscreen(false);
+
   emit errorReported(QString::fromLocal8Bit(message));
 
-  if (m_settings.start_fullscreen)
+  if (was_fullscreen)
-    emit setFullscreenRequested(true);
+    SetFullscreen(true);
 }
 
 void QtHostInterface::ReportMessage(const char* message)
@@ -83,12 +86,14 @@ void QtHostInterface::ReportMessage(const char* message)
 
 bool QtHostInterface::ConfirmMessage(const char* message)
 {
-  emit setFullscreenRequested(false);
+  const bool was_fullscreen = m_is_fullscreen;
+  if (was_fullscreen)
+    SetFullscreen(false);
 
   const bool result = messageConfirmed(QString::fromLocal8Bit(message));
 
-  if (m_settings.start_fullscreen)
+  if (was_fullscreen)
-    emit setFullscreenRequested(true);
+    SetFullscreen(true);
 
   return result;
 }
@@ -137,6 +142,14 @@ void QtHostInterface::applySettings()
   QtSettingsInterface si(m_qsettings);
   UpdateSettings([this, &si]() { m_settings.Load(si); });
   CommonHostInterface::UpdateInputMap(si);
+
+  // detect when render-to-main flag changes
+  const bool render_to_main = m_qsettings.value("Main/RenderToMainWindow", true).toBool();
+  if (m_system && m_display_widget && !m_is_fullscreen && render_to_main != m_is_rendering_to_main)
+  {
+    m_is_rendering_to_main = render_to_main;
+    emit updateDisplayWindowRequested(false, render_to_main);
+  }
 }
 
 void QtHostInterface::loadSettings()
@@ -257,11 +270,25 @@ void QtHostInterface::redrawDisplayWindow()
   renderDisplay();
 }
 
+void QtHostInterface::toggleFullscreen()
+{
+  if (!isOnWorkerThread())
+  {
+    QMetaObject::invokeMethod(this, "toggleFullscreen", Qt::QueuedConnection);
+    return;
+  }
+
+  ToggleFullscreen();
+}
+
 bool QtHostInterface::AcquireHostDisplay()
 {
   DebugAssert(!m_display_widget);
 
-  emit createDisplayWindowRequested(m_worker_thread, m_settings.gpu_use_debug_device);
+  m_is_rendering_to_main = getSettingValue("Main/RenderToMainWindow", true).toBool();
+  m_is_fullscreen = m_settings.start_fullscreen;
+  emit createDisplayWindowRequested(m_worker_thread, m_settings.gpu_use_debug_device, m_is_fullscreen,
+                                    m_is_rendering_to_main);
   if (!m_display_widget->hasDeviceContext())
   {
     m_display_widget = nullptr;
@@ -292,12 +319,17 @@ void QtHostInterface::ReleaseHostDisplay()
 
 void QtHostInterface::SetFullscreen(bool enabled)
 {
-  emit setFullscreenRequested(enabled);
+  if (m_is_fullscreen == enabled)
+    return;
+
+  m_is_fullscreen = enabled;
+  emit updateDisplayWindowRequested(m_is_fullscreen, m_is_rendering_to_main);
 }
 
 void QtHostInterface::ToggleFullscreen()
 {
-  emit toggleFullscreenRequested();
+  m_is_fullscreen = !m_is_fullscreen;
+  emit updateDisplayWindowRequested(m_is_fullscreen, m_is_rendering_to_main);
 }
 
 std::optional<CommonHostInterface::HostKeyCode> QtHostInterface::GetHostKeyCode(const std::string_view key_code) const
@@ -381,6 +413,13 @@ void QtHostInterface::OnSystemStateSaved(bool global, s32 slot)
   emit stateSaved(QString::fromStdString(m_system->GetRunningCode()), global, slot);
 }
 
+void QtHostInterface::SetDefaultSettings(SettingsInterface& si)
+{
+  CommonHostInterface::SetDefaultSettings(si);
+
+  si.SetBoolValue("Main", "RenderToMainWindow", true);
+}
+
 void QtHostInterface::UpdateInputMap()
 {
   updateInputMap();

src/duckstation-qt/qthostinterface.h

@@ -75,10 +75,10 @@ Q_SIGNALS:
   void emulationPaused(bool paused);
   void stateSaved(const QString& game_code, bool global, qint32 slot);
   void gameListRefreshed();
-  void createDisplayWindowRequested(QThread* worker_thread, bool use_debug_device);
+  void createDisplayWindowRequested(QThread* worker_thread, bool use_debug_device, bool fullscreen,
+                                    bool render_to_main);
   void destroyDisplayWindowRequested();
-  void setFullscreenRequested(bool fullscreen);
+  void updateDisplayWindowRequested(bool fullscreen, bool render_to_main);
-  void toggleFullscreenRequested();
   void focusDisplayWidgetRequested();
   void systemPerformanceCountersUpdated(float speed, float fps, float vps, float avg_frame_time,
                                         float worst_frame_time);
@@ -103,6 +103,7 @@ public Q_SLOTS:
   void stopDumpingAudio();
   void saveScreenshot();
   void redrawDisplayWindow();
+  void toggleFullscreen();
 
   /// Enables controller polling even without a system active. Must be matched by a call to
   /// disableBackgroundControllerPolling.
@@ -131,6 +132,7 @@ protected:
   void OnRunningGameChanged() override;
   void OnSystemStateSaved(bool global, s32 slot) override;
 
+  void SetDefaultSettings(SettingsInterface& si) override;
   void UpdateInputMap() override;
 
 private:
@@ -182,4 +184,7 @@ private:
 
   QTimer* m_background_controller_polling_timer = nullptr;
   u32 m_background_controller_polling_enable_count = 0;
+
+  bool m_is_rendering_to_main = false;
+  bool m_is_fullscreen = false;
 };