ScrollRect Gamepad support?

You can implement a new class from Scrollrect and IMoveHandler. Also IPinterClickHandler so you can select the object on pointer click. Full code looks like this. You should attach this to your ui object which is going to be ScrollRect.

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 using UnityEngine.EventSystems;
 
 public class MoveScrollRect : ScrollRect, IMoveHandler, IPointerClickHandler {
     private const float speedMultiplier = 0.1f;
     public float xSpeed = 0;
     public float ySpeed = 0;
 
     private float hPos, vPos;
 
     void IMoveHandler.OnMove(AxisEventData e) {
         xSpeed += e.moveVector.x * (Mathf.Abs(xSpeed) + 0.1f);
         ySpeed += e.moveVector.y * (Mathf.Abs(ySpeed) + 0.1f);
     }
 
     void Update() {
         hPos = horizontalNormalizedPosition + xSpeed * speedMultiplier;
         vPos = verticalNormalizedPosition + ySpeed * speedMultiplier;
 
         xSpeed = Mathf.Lerp(xSpeed, 0, 0.1f);
         ySpeed = Mathf.Lerp(ySpeed, 0, 0.1f);
 
         if(movementType == MovementType.Clamped) {
             hPos = Mathf.Clamp01(hPos);
             vPos = Mathf.Clamp01(vPos);
         }
 
         normalizedPosition = new Vector2(hPos, vPos);
     }
 
     public void OnPointerClick(PointerEventData e) {
         EventSystem.current.SetSelectedGameObject(gameObject);        
     }
 
     public override void OnBeginDrag(PointerEventData eventData) {
         EventSystem.current.SetSelectedGameObject(gameObject);        
         base.OnBeginDrag(eventData);
     }
 }
 

I couldn't find an elegant way to update ScrollRect position. Also as you see I calculate the scrolling speed myself. It can be tweaked to work better. Anyways, if you improve the code, let me know.