Qt: Add -nogui command line parameter

pcsx2-qt/EmuThread.cpp

@@ -108,7 +108,7 @@ void EmuThread::startVM(std::shared_ptr<VMBootParameters> boot_params)
 
 	// create the display, this may take a while...
 	m_is_fullscreen = boot_params->fullscreen.value_or(Host::GetBaseBoolSettingValue("UI", "StartFullscreen", false));
-	m_is_rendering_to_main = !Host::GetBaseBoolSettingValue("UI", "RenderToSeparateWindow", false);
+	m_is_rendering_to_main = shouldRenderToMain();
 	m_is_surfaceless = false;
 	m_save_state_on_shutdown = false;
 	if (!VMManager::Initialize(*boot_params))
@@ -452,7 +452,7 @@ void EmuThread::checkForSettingChanges()
 
 	if (VMManager::HasValidVM())
 	{
-		const bool render_to_main = !Host::GetBaseBoolSettingValue("UI", "RenderToSeparateWindow", false);
+		const bool render_to_main = shouldRenderToMain();
 		if (!m_is_fullscreen && m_is_rendering_to_main != render_to_main)
 		{
 			m_is_rendering_to_main = render_to_main;
@@ -469,6 +469,11 @@ void EmuThread::checkForSettingChanges()
 		updatePerformanceMetrics(true);
 }
 
+bool EmuThread::shouldRenderToMain() const
+{
+	return !Host::GetBaseBoolSettingValue("UI", "RenderToSeparateWindow", false) && !QtHost::InNoGUIMode();
+}
+
 void EmuThread::toggleSoftwareRendering()
 {
 	if (!isOnEmuThread())

pcsx2-qt/EmuThread.h

@@ -135,6 +135,7 @@ private:
 	void destroyVM();
 	void executeVM();
 	void checkForSettingChanges();
+	bool shouldRenderToMain() const;
 
 	void createBackgroundControllerPollTimer();
 	void destroyBackgroundControllerPollTimer();

pcsx2-qt/MainWindow.cpp

@@ -799,7 +799,7 @@ void MainWindow::updateWindowState(bool force_visible)
 	if (m_is_closing)
 		return;
 
-	const bool hide_window = !g_emu_thread->isRenderingToMain() && Host::GetBaseBoolSettingValue("UI", "HideMainWindowWhenRunning", false);
+	const bool hide_window = !g_emu_thread->isRenderingToMain() && shouldHideMainWindow();
 	const bool disable_resize = Host::GetBaseBoolSettingValue("UI", "DisableWindowResize", false);
 	const bool has_window = s_vm_valid || m_display_widget;
 
@@ -869,6 +869,11 @@ bool MainWindow::shouldHideMouseCursor() const
 	return isRenderingFullscreen() && Host::GetBoolSettingValue("UI", "HideMouseCursor", false);
 }
 
+bool MainWindow::shouldHideMainWindow() const
+{
+	return Host::GetBaseBoolSettingValue("UI", "HideMainWindowWhenRunning", false) || QtHost::InNoGUIMode();
+}
+
 void MainWindow::switchToGameListView()
 {
 	if (isShowingGameList())
@@ -990,10 +995,10 @@ bool MainWindow::requestShutdown(bool allow_confirm /* = true */, bool allow_sav
 
 	if (!m_is_closing && QtHost::InBatchMode())
 	{
-		// Closing the window should shut down everything. If we don't set the closing flag here,
-		// the VM shutdown may not complete by the time closeEvent() is called, leading to a confirm.
+		// If we don't set the closing flag here, the VM shutdown may not complete by the time closeEvent() is called,
+		// leading to a confirm.
 		m_is_closing = true;
-		close();
+		QGuiApplication::quit();
 	}
 
 	return true;
@@ -1005,7 +1010,9 @@ void MainWindow::requestExit()
 	if (!requestShutdown(true, true, true))
 		return;
 
-	close();
+	// We could use close here, but if we're not visible (e.g. quitting from fullscreen), closing the window
+	// doesn't quit the application.
+	QGuiApplication::quit();
 }
 
 void MainWindow::checkForSettingChanges()

pcsx2-qt/MainWindow.h

@@ -197,6 +197,7 @@ private:
 	bool isRenderingFullscreen() const;
 	bool isRenderingToMain() const;
 	bool shouldHideMouseCursor() const;
+	bool shouldHideMainWindow() const;
 	void switchToGameListView();
 	void switchToEmulationView();
 

pcsx2-qt/QtHost.cpp

@@ -79,6 +79,7 @@ const IConsoleWriter* PatchesCon = &Console;
 static std::unique_ptr<QTimer> s_settings_save_timer;
 static std::unique_ptr<INISettingsInterface> s_base_settings_interface;
 static bool s_batch_mode = false;
+static bool s_nogui_mode = false;
 
 //////////////////////////////////////////////////////////////////////////
 // Initialization/Shutdown
@@ -341,6 +342,11 @@ bool QtHost::InBatchMode()
 	return s_batch_mode;
 }
 
+bool QtHost::InNoGUIMode()
+{
+	return s_nogui_mode;
+}
+
 void QtHost::RunOnUIThread(const std::function<void()>& func, bool block /*= false*/)
 {
 	// main window always exists, so it's fine to attach it to that.
@@ -489,6 +495,7 @@ void QtHost::PrintCommandLineHelp(const char* progname)
 	std::fprintf(stderr, "  -help: Displays this information and exits.\n");
 	std::fprintf(stderr, "  -version: Displays version information and exits.\n");
 	std::fprintf(stderr, "  -batch: Enables batch mode (exits after shutting down).\n");
+	std::fprintf(stderr, "  -nogui: Hides main window while running (implies batch mode).\n");
 	std::fprintf(stderr, "  -elf <file>: Overrides the boot ELF with the specified filename.\n");
 	std::fprintf(stderr, "  -disc <path>: Uses the specified host DVD drive as a source.\n");
 	std::fprintf(stderr, "  -bios: Starts the BIOS (System Menu/OSDSYS).\n");
@@ -539,6 +546,12 @@ bool QtHost::ParseCommandLineOptions(int argc, char* argv[], std::shared_ptr<VMB
 				s_batch_mode = true;
 				continue;
 			}
+			else if (CHECK_ARG("-nogui"))
+			{
+				s_batch_mode = true;
+				s_nogui_mode = true;
+				continue;
+			}
 			else if (CHECK_ARG("-fastboot"))
 			{
 				AutoBoot(autoboot)->fast_boot = true;
@@ -625,7 +638,9 @@ bool QtHost::ParseCommandLineOptions(int argc, char* argv[], std::shared_ptr<VMB
 	// scanning the game list).
 	if (s_batch_mode && !autoboot)
 	{
-		QMessageBox::critical(nullptr, QStringLiteral("Error"), QStringLiteral("Cannot use batch mode, because no boot filename was specified."));
+		QMessageBox::critical(nullptr, QStringLiteral("Error"), s_nogui_mode ?
+			QStringLiteral("Cannot use no-gui mode, because no boot filename was specified.") :
+			QStringLiteral("Cannot use batch mode, because no boot filename was specified."));
 		return false;
 	}
 
@@ -700,7 +715,8 @@ int main(int argc, char* argv[])
 	if (!s_batch_mode)
 		main_window->refreshGameList(false);
 
-	main_window->show();
+	if (!s_nogui_mode)
+		main_window->show();
 
 	if (autoboot)
 		g_emu_thread->startVM(std::move(autoboot));

pcsx2-qt/QtHost.h

@@ -43,6 +43,9 @@ namespace QtHost
 	/// Sets batch mode (exit after game shutdown).
 	bool InBatchMode();
 
+	/// Sets NoGUI mode (implys batch mode, does not display main window, exits on shutdown).
+	bool InNoGUIMode();
+
 	/// Executes a function on the UI thread.
 	void RunOnUIThread(const std::function<void()>& func, bool block = false);