DragHandler

using UniRx;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

namespace AnimalSimulator.PaintMode.UI.ColorPanel
{
    [RequireComponent(typeof(Image))]
    public class DragHandler : MonoBehaviour, IDragHandler
    {
        public readonly Subject<PointerEventData> OnDrag = new Subject<PointerEventData>();

        void IDragHandler.OnDrag(PointerEventData eventData) =>
            OnDrag.OnNext(eventData);
    }
}