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Assets/Zion/Scripts/Adam/Components/ExtendedSlider.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.EventSystems;
+using UnityEngine.UI;
+
+[Serializable]
+public class ExtendedEvent : UnityEvent<float> { } //定义拓展的事件 
+public class ExtendedSlider : Slider, IBeginDragHandler, IEndDragHandler
+{
+    public ExtendedEvent DragStart = new ExtendedEvent();
+
+    public ExtendedEvent DragStop = new ExtendedEvent();
+
+    public ExtendedEvent PointerDown = new ExtendedEvent();
+    public void OnBeginDrag(PointerEventData eventData)
+    {
+        DragStart.Invoke(m_Value);
+    }
+
+    public void OnEndDrag(PointerEventData eventData)
+    {
+        DragStop.Invoke(m_Value);
+    }
+
+    public override void OnPointerDown(PointerEventData eventData)
+    {
+        base.OnPointerDown(eventData);
+        PointerDown.Invoke(m_Value);
+    }
+}

Assets/Zion/Scripts/Adam/Components/ExtendedSlider.cs.meta

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