using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.EventSystems;
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using System;
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public class UIEventTrigger : EventTrigger {
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public delegate void ObjectDelegate(GameObject go,PointerEventData eventData);
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public delegate void OneParamDelegate(GameObject go);
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public delegate void PointerEvtDataDelegate(PointerEventData eventData);
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public delegate void NoParamDelegate();
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public ObjectDelegate OnClick;
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public OneParamDelegate OneParaClick;
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private bool doubleClick = false;
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private bool m_DoubleClick = false;
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private bool continueClick = true;
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private NoParamDelegate m_OnDoubleClick;
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private bool m_OnScroll = false;
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public NoParamDelegate OnDoubleClick {
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get { return m_OnDoubleClick; }
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set {
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doubleClick = value!=null;
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m_OnDoubleClick = value;
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}
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}
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/// <summary>
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/// 用于处理ScrollRect中点击事件和拖动事件的冲突
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/// </summary>
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public PointerEvtDataDelegate OnScrollBeginDrag;
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/// <summary>
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/// 用于处理ScrollRect中点击事件和拖动事件的冲突
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/// </summary>
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private PointerEvtDataDelegate m_OnScrollDrag;
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public PointerEvtDataDelegate OnScrollDrag {
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get { return m_OnScrollDrag; }
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set {
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//m_OnScroll= value != null;
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m_OnScrollDrag = value;
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}
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}
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/// <summary>
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/// 用于处理ScrollRect中点击事件和拖动事件的冲突
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/// </summary>
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public PointerEvtDataDelegate OnScrollEndDrag;
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/// <summary>
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/// 鼠标按下事件
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/// </summary>
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public OneParamDelegate OnDown;
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/// <summary>
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/// 鼠标放开事件
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/// </summary>
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public OneParamDelegate OnUp;
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public NoParamDelegate OnNoParamsClick;
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public static PointerEventData EventData;
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private void Awake()
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{
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if (EventData == null) EventData =new PointerEventData(EventSystem.current);
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}
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public static UIEventTrigger Get(GameObject go)
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{
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UIEventTrigger listener = null;
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listener = go.GetComponent<UIEventTrigger>();
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if(listener==null) {
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listener = go.AddComponent<UIEventTrigger>();
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}
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listener.enabled = true;
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return listener;
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}
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/// <summary>
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/// 重载点击UI点击的事件，包含所有的UI组件，并传递被点击的物体
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/// </summary>
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/// <param name="eventData"></param>
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public override void OnPointerClick(PointerEventData eventData)
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{
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if (CheckDouble()) return;
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if (CheckScroll()) return;
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if (null != OnClick && enabled) OnClick(gameObject, eventData);
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if (null != OneParaClick && enabled) OneParaClick(gameObject);
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if (null != OnNoParamsClick && enabled) OnNoParamsClick();
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}
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private bool CheckDouble()
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{
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if (!doubleClick) return doubleClick;
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if (!continueClick) return doubleClick;
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if (m_DoubleClick) {
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OnDoubleClick();
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continueClick = false;
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m_DoubleClick = false;
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}
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else {
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this.OnWaitCompelete(OnDoubleWait);
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this.SetWait(0.3f);
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this.DoWaitRestart();
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m_DoubleClick = true;
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}
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return doubleClick;
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}
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private bool CheckScroll()
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{
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return m_OnScroll;
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}
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private void OnDoubleWait(Component comp)
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{
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if (m_DoubleClick) {
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if (null != OneParaClick && enabled) OneParaClick(gameObject);
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if (null != OnNoParamsClick && enabled) OnNoParamsClick();
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}
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continueClick = true;
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m_DoubleClick = false;
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}
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/// <summary>
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/// 开始拖动
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/// </summary>
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/// <param name="eventData"></param>
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private Vector2 m_BeginSrPos = Vector2.zero;
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public override void OnBeginDrag(PointerEventData eventData)
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{
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if (null != OnScrollBeginDrag && enabled)
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{
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m_BeginSrPos = eventData.position;
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OnScrollBeginDrag(eventData);
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}
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}
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/// <summary>
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/// 拖动中
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/// </summary>
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/// <param name="eventData"></param>
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public override void OnDrag(PointerEventData eventData)
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{
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if (null != OnScrollDrag && enabled)
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{
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if (Vector2.Distance(m_BeginSrPos, eventData.position) < 10.0f) {
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return;
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}
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m_OnScroll = true;
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OnScrollDrag(eventData);
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}
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}
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/// <summary>
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/// 结束拖动
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/// </summary>
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/// <param name="eventData"></param>
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public override void OnEndDrag(PointerEventData eventData)
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{
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if (null != OnScrollEndDrag && enabled)
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{
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m_OnScroll = false;
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OnScrollEndDrag(eventData);
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}
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}
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/// <summary>
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/// 鼠标按下
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/// </summary>
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/// <param name="eventData"></param>
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public override void OnPointerDown(PointerEventData eventData)
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{
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if (null != OnDown && enabled) OnDown(gameObject);
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}
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/// <summary>
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/// 鼠标放开
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/// </summary>
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/// <param name="eventData"></param>
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public override void OnPointerUp(PointerEventData eventData)
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{
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if (null != OnUp && enabled) OnUp(gameObject);
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}
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public static UIEventTrigger Contains(GameObject go)
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{
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return go.GetComponent<UIEventTrigger>();
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}
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private void OnDisable()
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{
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m_DoubleClick = false;
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continueClick = true;
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m_OnScroll = false;
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}
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}
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