Move UI folder

UI/UI_dial.hpp

@@ -0,0 +1,30 @@
+#pragma once
+#include "UI_item.hpp"
+
+#define UI_DIAL_TYPE std::string("UI_dial")
+
+class UI_dial : public UI_item
+{
+    Q_OBJECT
+  public:
+    UI_dial(std::string text, std::string unit, Color fg_color, Color bg_color, double min, double max, double value,
+            QObject *parent = nullptr);
+    UI_dial(std::string text, Color fg_color, Color bg_color, double min, double max, double value,
+            QObject *parent = nullptr);
+    UI_dial(const json &j, QObject *parent = nullptr);
+
+    void set_value(double value) override;
+    double value() const;
+
+    double min() const;
+    double max() const;
+
+    void from_json(const json &j) override;
+    json to_json(size_t id) const override;
+
+  private:
+    double m_min;
+    double m_max;
+    double m_value;
+    std::string m_unit;
+};