Create slider field type

src/data/field/slider.hpp

@@ -0,0 +1,60 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) Twan van Laarhoven and the other MSE developers          |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+#pragma once
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/prec.hpp>
+#include <data/field/choice.hpp>
+
+// ----------------------------------------------------------------------------- : SliderField
+
+DECLARE_POINTER_TYPE(SliderField);
+DECLARE_POINTER_TYPE(SliderStyle);
+DECLARE_POINTER_TYPE(SliderValue);
+
+/// A field whos value is an integer from a range
+class SliderField : public ChoiceField {
+public:
+  SliderField();
+  DECLARE_FIELD_TYPE(SliderField);
+  
+  int minimum, maximum, increment;
+
+  void after_reading(Version ver) override;
+};
+
+// ----------------------------------------------------------------------------- : SliderStyle
+
+/// The Style for a SliderField
+class SliderStyle : public ChoiceStyle {
+public:
+  SliderStyle(const ChoiceFieldP& field);
+  DECLARE_HAS_FIELD(Slider); // not DECLARE_STYLE_TYPE, because we use a normal ChoiceValueViewer/Editor
+  StyleP clone() const override;
+  
+  // no extra data
+  
+private:
+  DECLARE_REFLECTION();
+};
+
+// ----------------------------------------------------------------------------- : SliderValue
+
+/// The Value in a SliderField
+class SliderValue : public ChoiceValue {
+public:
+  inline SliderValue(const ChoiceFieldP& field) : ChoiceValue(field) {}
+  DECLARE_HAS_FIELD(Slider);
+  ValueP clone() const override;
+  
+  // no extra data
+  
+private:
+  DECLARE_REFLECTION();
+};
+