using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.EventSystems;
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public class ScrollRectGroup : MonoBehaviour, IInitializePotentialDragHandler, IBeginDragHandler, IEndDragHandler, IDragHandler
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{
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[SerializeField] ScrollRect[] m_ScrollRects;
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[SerializeField] Direction m_OnlyDirection;
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[SerializeField] float m_Offset = 100f;
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Dictionary<Direction, ScrollRect> scrollRects = new Dictionary<Direction, ScrollRect>();
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Direction m_Direction = Direction.None;
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Direction direction
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{
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get { return m_Direction; }
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set
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{
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if (value != m_Direction)
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{
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m_Direction = value;
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scrollRects[Direction.Horizontal].horizontal = direction == Direction.Horizontal
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|| direction == Direction.Both;
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scrollRects[Direction.Vertical].vertical = direction == Direction.Vertical
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|| direction == Direction.Both;
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scrollRects[Direction.Both].horizontal = direction == Direction.Horizontal
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|| direction == Direction.Both;
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scrollRects[Direction.Both].vertical = direction == Direction.Vertical
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|| direction == Direction.Both;
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}
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}
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}
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Vector2 m_StartPosition = Vector2.zero;
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private void Awake()
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{
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for (int i = 0; i < m_ScrollRects.Length; i++)
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{
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var scrollRect = m_ScrollRects[i];
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if (scrollRect.horizontal && scrollRect.vertical)
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{
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scrollRects.Add(Direction.Both, scrollRect);
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}
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else if (scrollRect.horizontal)
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{
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scrollRects.Add(Direction.Horizontal, scrollRect);
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}
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else
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{
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scrollRects.Add(Direction.Vertical, scrollRect);
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}
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}
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Initialize();
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}
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public void Initialize()
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{
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direction = Direction.Both;
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scrollRects[Direction.Both].horizontalNormalizedPosition = 0f;
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scrollRects[Direction.Both].verticalNormalizedPosition = 1f;
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scrollRects[Direction.Horizontal].horizontalNormalizedPosition = 0f;
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scrollRects[Direction.Vertical].verticalNormalizedPosition = 1f;
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}
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public void OnBeginDrag(PointerEventData eventData)
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{
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direction = Direction.Both;
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foreach (var scrollRect in m_ScrollRects)
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{
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scrollRect.OnBeginDrag(eventData);
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}
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m_StartPosition = eventData.position;
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}
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public void OnDrag(PointerEventData eventData)
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{
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var position = eventData.position;
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if (direction == Direction.Both)
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{
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if (m_OnlyDirection == Direction.Both)
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{
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var horizontal = Mathf.Abs(position.x - m_StartPosition.x) > m_Offset;
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var vertical = !horizontal && Mathf.Abs(position.y - m_StartPosition.y) > m_Offset;
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if (horizontal || vertical)
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{
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var _direction = horizontal ? Direction.Horizontal : Direction.Vertical;
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if (_direction != direction)
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{
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direction = _direction;
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foreach (var scrollRect in m_ScrollRects)
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{
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scrollRect.OnBeginDrag(eventData);
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}
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}
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}
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}
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else
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{
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direction = m_OnlyDirection;
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}
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}
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if (direction != Direction.Both)
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{
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foreach (var scrollRect in m_ScrollRects)
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{
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scrollRect.OnDrag(eventData);
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}
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}
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}
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public void OnEndDrag(PointerEventData eventData)
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{
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foreach (var scrollRect in m_ScrollRects)
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{
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scrollRect.OnEndDrag(eventData);
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}
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}
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public void OnInitializePotentialDrag(PointerEventData eventData)
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{
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foreach (var scrollRect in m_ScrollRects)
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{
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scrollRect.OnInitializePotentialDrag(eventData);
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}
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}
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#if UNITY_EDITOR
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[ContextMenu("CloseRayAccepter")]
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void BatchCloseRayAccepter()
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{
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var componenst = transform.GetComponentsInChildren<Graphic>(true);
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for (int i = 0; i < componenst.Length; i++)
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{
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componenst[i].raycastTarget = false;
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}
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}
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#endif
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enum Direction
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{
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None,
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Horizontal,
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Vertical,
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Both,
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}
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}
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