XiuXianGame/Assets/Scripts/Core/UI/UTool/ButtonAnimation.cs

using System.Collections;
using System.Collections.Generic;
using LitMotion;
using UnityEngine;
using UnityEngine.EventSystems;
using RectTransform = UnityEngine.RectTransform;

public class ButtonAnimation : MonoBehaviour, IPointerDownHandler, IPointerUpHandler
{
    // [Header("Components")] [SerializeField]
    RectTransform rectTransform;
    // [SerializeField] TMP_Text text;

    [Header("Settings")] [SerializeField] float duration = 0.07f;
    [SerializeField] Ease ease = Ease.OutQuad;
    [SerializeField] Vector3 animationSizeDelta = new(0.2f, 0.2f);
    // [SerializeField] float animationFontSizeDelta = 1f;

    Vector3 initialSize;
    float initialFontSize;

    CompositeMotionHandle motionHandles = new();

    void Start()
    {
        rectTransform = GetComponent<RectTransform>();
        initialSize = rectTransform.localScale;
        // initialFontSize = text.fontSize;
    }

    void OnDestroy()
    {
        motionHandles.Cancel();
    }

    public void OnPointerDown(PointerEventData eventData)
    {
        motionHandles.Cancel();

        LMotion.Create(rectTransform.localScale, initialSize - animationSizeDelta, duration)
            .WithEase(ease).Bind(Bind)
            // .BindToSizeDelta(rectTransform)
            .AddTo(motionHandles);

        // LMotion.Create(text.fontSize, initialFontSize - animationFontSizeDelta, duration)
        //     .WithEase(ease)
        //     .BindToFontSize(text)
        //     .AddTo(motionHandles);
    }

    private void Bind(Vector3 size)
    {
        rectTransform.localScale = size;
    }

    public void OnPointerUp(PointerEventData eventData)
    {
        motionHandles.Cancel();

        LMotion.Create(rectTransform.localScale, initialSize, duration)
            .WithEase(ease)
            .Bind(Bind)
            .AddTo(motionHandles);
    }
}