add joysick support and state feedback

src/trainjs.h

@@ -0,0 +1,47 @@
+#ifndef TRAINJS_H
+#define TRAINJS_H
+
+#include <QObject>
+#include <QTimer>
+#include <memory>
+#include <vector>
+#include "items/item.h"
+#include "QJoysticks.h"
+
+class TrainJs: public QObject
+{
+	Q_OBJECT
+private:
+	static constexpr char JOYSTICK_NAME[] = "UVOS UsbJoy";
+	static constexpr int LONGPRESS_TIME = 500;
+
+	inline static std::vector<std::shared_ptr<TrainJs>> js_;
+
+	int id_ = -1;
+	int axis_ = -1;
+
+	QTimer longpressTimer_;
+	bool handleRelease = false;
+
+	std::weak_ptr<Item> item_;
+	TrainJs(int id, int axis);
+	TrainJs() = default;
+
+private slots:
+	void axisChanged(const int id, const int axis, const qreal value);
+	void buttonChanged(const int id, const int button, const bool pressed);
+	void longpressTimeout();
+
+signals:
+	void reqNewItem();
+
+public:
+	~TrainJs();
+	static std::vector<std::shared_ptr<TrainJs>> getJsDevices();
+	static void init();
+	std::weak_ptr<Item> getItem();
+	void setItem(std::weak_ptr<Item>);
+	bool itemIsSet();
+};
+
+#endif // TRAINJS_H