From 1eeeb360155fd3783da8584b8ecf11a352ff89cd Mon Sep 17 00:00:00 2001
From: Jeffrey Pfau <jeffrey@endrift.com>
Date: Wed, 29 Jan 2014 23:39:24 -0800
Subject: [PATCH] Add emulation menu with Pause option

---
 src/platform/qt/GameController.cpp | 16 +++++++++++++---
 src/platform/qt/GameController.h   |  4 +++-
 src/platform/qt/Window.cpp         | 17 +++++++++++++++++
 src/platform/qt/Window.h           |  2 ++
 4 files changed, 35 insertions(+), 4 deletions(-)

diff --git a/src/platform/qt/GameController.cpp b/src/platform/qt/GameController.cpp
index cf626c52b..98ac7ace2 100644
--- a/src/platform/qt/GameController.cpp
+++ b/src/platform/qt/GameController.cpp
@@ -42,17 +42,27 @@ GameController::~GameController() {
 	delete m_renderer;
 }
 
-bool GameController::loadGame(const QString& path) {
+void GameController::loadGame(const QString& path) {
 	m_rom = new QFile(path);
 	if (!m_rom->open(QIODevice::ReadOnly)) {
 		delete m_rom;
 		m_rom = 0;
-		return false;
 	}
 	m_threadContext.fd = m_rom->handle();
 	m_threadContext.fname = path.toLocal8Bit().constData();
 	GBAThreadStart(&m_threadContext);
-	return true;
+	emit gameStarted();
+}
+
+void GameController::setPaused(bool paused) {
+	if (paused == GBAThreadIsPaused(&m_threadContext)) {
+		return;
+	}
+	if (paused) {
+		GBAThreadPause(&m_threadContext);
+	} else {
+		GBAThreadUnpause(&m_threadContext);
+	}
 }
 
 void GameController::keyPressed(int key) {
diff --git a/src/platform/qt/GameController.h b/src/platform/qt/GameController.h
index 73d675c37..31bbd642e 100644
--- a/src/platform/qt/GameController.h
+++ b/src/platform/qt/GameController.h
@@ -27,9 +27,11 @@ public:
 signals:
 	void frameAvailable(const QImage&);
 	void audioDeviceAvailable(GBAAudio*);
+	void gameStarted();
 
 public slots:
-	bool loadGame(const QString& path);
+	void loadGame(const QString& path);
+	void setPaused(bool paused);
 	void keyPressed(int key);
 	void keyReleased(int key);
 
diff --git a/src/platform/qt/Window.cpp b/src/platform/qt/Window.cpp
index 3438fd71d..aeeaa6a15 100644
--- a/src/platform/qt/Window.cpp
+++ b/src/platform/qt/Window.cpp
@@ -16,6 +16,7 @@ Window::Window(QWidget* parent) : QMainWindow(parent) {
 	setCentralWidget(m_display);
 	connect(m_controller, SIGNAL(frameAvailable(const QImage&)), m_display, SLOT(draw(const QImage&)));
 	connect(m_controller, SIGNAL(audioDeviceAvailable(GBAAudio*)), this, SLOT(setupAudio(GBAAudio*)));
+	connect(m_controller, SIGNAL(gameStarted()), this, SLOT(gameStarted()));
 
 	setupMenu(menuBar());
 }
@@ -92,6 +93,12 @@ void Window::keyReleaseEvent(QKeyEvent* event) {
 	event->accept();
 }
 
+void Window::gameStarted() {
+	foreach (QAction* action,  m_gameActions) {
+		action->setDisabled(false);
+	}
+}
+
 void Window::setupAudio(GBAAudio* audio) {
 	AudioDevice::Thread* thread = new AudioDevice::Thread(this);
 	thread->setInput(audio);
@@ -102,4 +109,14 @@ void Window::setupMenu(QMenuBar* menubar) {
 	menubar->clear();
 	QMenu* fileMenu = menubar->addMenu(tr("&File"));
 	fileMenu->addAction(tr("Load &ROM"), this, SLOT(selectROM()), QKeySequence::Open);
+
+	QMenu* emulationMenu = menubar->addMenu(tr("&Emulation"));
+	QAction* pause = new QAction(tr("&Pause"), 0);
+	pause->setChecked(false);
+	pause->setCheckable(true);
+	pause->setShortcut(tr("Ctrl+P"));
+	pause->setDisabled(true);
+	connect(pause, SIGNAL(triggered(bool)), m_controller, SLOT(setPaused(bool)));
+	m_gameActions.append(pause);
+	emulationMenu->addAction(pause);
 }
diff --git a/src/platform/qt/Window.h b/src/platform/qt/Window.h
index 5888c10d6..a2f0672f4 100644
--- a/src/platform/qt/Window.h
+++ b/src/platform/qt/Window.h
@@ -28,12 +28,14 @@ protected:
 	virtual void keyReleaseEvent(QKeyEvent* event);
 
 private slots:
+	void gameStarted();
 	void setupAudio(GBAAudio*);
 
 private:
 	void setupMenu(QMenuBar*);
 	GameController* m_controller;
 	Display* m_display;
+	QList<QAction*> m_gameActions;
 };
 
 }