41 lines
1.3 KiB
C#
41 lines
1.3 KiB
C#
using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.EventSystems;
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public class ResizableUI : MonoBehaviour, IDragHandler, IBeginDragHandler, IEndDragHandler
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{
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public RectTransform targetRectTransform; // 需要调整大小的目标物体
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private float originalWidth;
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private Vector2 originalMousePosition;
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void Start()
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{
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// 如果没有指定目标物体，默认使用自身
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if (targetRectTransform == null)
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{
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targetRectTransform = GetComponent<RectTransform>();
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}
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originalWidth = targetRectTransform.rect.width;
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}
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// 当鼠标按下时记录初始的鼠标位置
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void IBeginDragHandler.OnBeginDrag(PointerEventData eventData)
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{
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originalMousePosition = Input.mousePosition;
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}
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// 持续拖动时调整物体宽度
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void IDragHandler.OnDrag(PointerEventData eventData)
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{
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float mouseDelta = Input.mousePosition.x - originalMousePosition.x;
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float newWidth = Mathf.Max(originalWidth + mouseDelta, 10f); // 最小宽度设置为10
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targetRectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, newWidth);
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}
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// 拖动结束时更新原始宽度
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void IEndDragHandler.OnEndDrag(PointerEventData eventData)
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{
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originalWidth = targetRectTransform.rect.width;
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}
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}
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