51 lines
1.5 KiB
C#
51 lines
1.5 KiB
C#
using Unity.VisualScripting;
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using UnityEngine;
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using UnityEngine.EventSystems;
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public class ManualScroller : MonoBehaviour, IScrollHandler, IBeginDragHandler, IDragHandler, IPointerEnterHandler, IPointerExitHandler
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{
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public RectTransform viewport;
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public RectTransform content;
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public float scrollSpeed = 50.0f;
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private bool isMouseOver = false;
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private Vector2 lastDragPosition;
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public void OnScroll(PointerEventData eventData)
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{
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if (!isMouseOver) return;
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Vector2 pos = content.anchoredPosition;
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pos.y -= eventData.scrollDelta.y * scrollSpeed;
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if (pos.y < 0) pos.y = 0;
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if (viewport.rect.height + pos.y > content.rect.height) pos.y = content.rect.height - viewport.rect.height;
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content.anchoredPosition = pos;
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}
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public void OnBeginDrag(PointerEventData eventData)
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{
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if (!isMouseOver) return;
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lastDragPosition = eventData.position;
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}
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public void OnDrag(PointerEventData eventData)
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{
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if (!isMouseOver) return;
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Vector2 delta = eventData.position - lastDragPosition;
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Vector2 pos = content.anchoredPosition;
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pos.y += delta.y;
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content.anchoredPosition = pos;
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lastDragPosition = eventData.position;
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}
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public void OnEndDrag(PointerEventData eventData)
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{
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}
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public void OnPointerEnter(PointerEventData eventData)
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{
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isMouseOver = true;
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}
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public void OnPointerExit(PointerEventData eventData)
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{
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isMouseOver = false;
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}
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}
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