[Qt] Add touchscreen

include/panda_qt/main_window.hpp

@@ -42,6 +42,8 @@ class MainWindow : public QMainWindow {
 		SetCirclePadY,
 		LoadLuaScript,
 		EditCheat,
+		PressTouchscreen,
+		ReleaseTouchscreen,
 	};
 
 	// Tagged union representing our message queue messages
@@ -68,6 +70,11 @@ class MainWindow : public QMainWindow {
 			struct {
 				CheatMessage* c;
 			} cheat;
+
+			struct {
+				u16 x;
+				u16 y;
+			} touchscreen;
 		};
 	};
 
@@ -108,6 +115,9 @@ class MainWindow : public QMainWindow {
 
 	void keyPressEvent(QKeyEvent* event) override;
 	void keyReleaseEvent(QKeyEvent* event) override;
+	void mousePressEvent(QMouseEvent* event) override;
+	void mouseReleaseEvent(QMouseEvent* event) override;
+
 	void loadLuaScript(const std::string& code);
 	void editCheat(u32 handle, const std::vector<uint8_t>& cheat, const std::function<void(u32)>& callback);
 };

src/panda_qt/main_window.cpp

@@ -3,6 +3,7 @@
 #include <QDesktopServices>
 #include <QFileDialog>
 #include <QString>
+#include <cmath>
 #include <cstdio>
 #include <fstream>
 
@@ -277,6 +278,10 @@ void MainWindow::dispatchMessage(const EmulatorMessage& message) {
 		case MessageType::ReleaseKey: emu->getServiceManager().getHID().releaseKey(message.key.key); break;
 		case MessageType::SetCirclePadX: emu->getServiceManager().getHID().setCirclepadX(message.circlepad.value); break;
 		case MessageType::SetCirclePadY: emu->getServiceManager().getHID().setCirclepadY(message.circlepad.value); break;
+		case MessageType::PressTouchscreen:
+			emu->getServiceManager().getHID().setTouchScreenPress(message.touchscreen.x, message.touchscreen.y);
+			break;
+		case MessageType::ReleaseTouchscreen: emu->getServiceManager().getHID().releaseTouchScreen(); break;
 	}
 }
 
@@ -357,6 +362,40 @@ void MainWindow::keyReleaseEvent(QKeyEvent* event) {
 	}
 }
 
+void MainWindow::mousePressEvent(QMouseEvent* event) {
+	if (event->button() == Qt::MouseButton::LeftButton) {
+		const QPointF clickPos = event->globalPosition();
+		const QPointF widgetPos = screen.mapFromGlobal(clickPos);
+
+		// Press is inside the screen area
+		if (widgetPos.x() >= 0 && widgetPos.x() < screen.width() && widgetPos.y() >= 0 && widgetPos.y() < screen.height()) {
+			// Go from widget positions to [0, 400) for x and [0, 480) for y
+			uint x = (uint)std::round(widgetPos.x() / screen.width() * 400.f);
+			uint y = (uint)std::round(widgetPos.y() / screen.height() * 480.f);
+
+			// Check if touch falls in the touch screen area
+			if (y >= 240 && y <= 480 && x >= 40 && x < 40 + 320) {
+				// Convert to 3DS coordinates
+				u16 x_converted = static_cast<u16>(x) - 40;
+				u16 y_converted = static_cast<u16>(y) - 240;
+
+				EmulatorMessage message{.type = MessageType::PressTouchscreen};
+				message.touchscreen.x = x_converted;
+				message.touchscreen.y = y_converted;
+				sendMessage(message);
+			} else {
+				sendMessage(EmulatorMessage{.type = MessageType::ReleaseTouchscreen});
+			}
+		}
+	}
+}
+
+void MainWindow::mouseReleaseEvent(QMouseEvent* event) {
+	if (event->button() == Qt::MouseButton::LeftButton) {
+		sendMessage(EmulatorMessage{.type = MessageType::ReleaseTouchscreen});
+	}
+}
+
 void MainWindow::loadLuaScript(const std::string& code) {
 	EmulatorMessage message{.type = MessageType::LoadLuaScript};