//--------------------------------------------------------
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// [Author]: 玩个游戏
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// [ Date ]: Saturday, November 25, 2017
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//--------------------------------------------------------
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using UnityEngine;
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using UnityEngine.Events;
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using UnityEngine.EventSystems;
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using System.Collections.Generic;
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using System;
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[RequireComponent(typeof(RectTransform))]
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public class FakeButton : MonoBehaviour, IPointerClickHandler, IPointerDownHandler, IPointerUpHandler, IDragHandler
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{
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RectTransform m_RectTransform;
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public RectTransform rectTransform { get { return m_RectTransform ?? (m_RectTransform = this.transform as RectTransform); } }
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Action m_OnClick;
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public void AddListener(Action action)
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{
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m_OnClick += action;
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}
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public void RemoveAllListeners()
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{
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m_OnClick = null;
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}
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public void OnPointerUp(PointerEventData eventData)
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{
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PassEvent(eventData, ExecuteEvents.pointerUpHandler);
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}
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public void OnPointerDown(PointerEventData eventData)
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{
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PassEvent(eventData, ExecuteEvents.pointerDownHandler);
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}
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public void OnDrag(PointerEventData eventData)
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{
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PassEvent(eventData, ExecuteEvents.dragHandler);
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}
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public void OnPointerClick(PointerEventData eventData)
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{
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m_OnClick?.Invoke();
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PassEvent(eventData, ExecuteEvents.submitHandler);
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PassEvent(eventData, ExecuteEvents.pointerClickHandler);
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}
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public void PassEvent<T>(PointerEventData data, ExecuteEvents.EventFunction<T> function) where T : IEventSystemHandler
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{
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List<RaycastResult> results = new List<RaycastResult>();
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EventSystem.current.RaycastAll(data, results);
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GameObject current = data.pointerCurrentRaycast.gameObject;
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for (int i = 0; i < results.Count; i++)
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{
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if (current != results[i].gameObject)
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{
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if (ExecuteEvents.Execute(results[i].gameObject, data, function))
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{
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break;
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}
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}
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}
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}
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}
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