EventTrigger

Description

Получает событий от системы событий и вызывает зарегистрированные для каждого событий функции.

The EventTrigger can be used to specify functions you wish to be called for each EventSystem event. You can assign multiple functions to a single event and whenever the EventTrigger receives that event it will call those functions in the order they were provided.

ВАЖНО: Добавление этого компонента игровому объекту сделает его перехватчиком всех событий. Объект не может быть переполнен событиями.

There are two ways to intercept events: You could extend EventTrigger, and override the functions for the events you are interested in intercepting; as shown in this example:

using UnityEngine;
using UnityEngine.EventSystems;

public class EventTriggerExample : EventTrigger
{
    public override void OnBeginDrag(PointerEventData data)
    {
        Debug.Log("OnBeginDrag called.");
    }

    public override void OnCancel(BaseEventData data)
    {
        Debug.Log("OnCancel called.");
    }

    public override void OnDeselect(BaseEventData data)
    {
        Debug.Log("OnDeselect called.");
    }

    public override void OnDrag(PointerEventData data)
    {
        Debug.Log("OnDrag called.");
    }

    public override void OnDrop(PointerEventData data)
    {
        Debug.Log("OnDrop called.");
    }

    public override void OnEndDrag(PointerEventData data)
    {
        Debug.Log("OnEndDrag called.");
    }

    public override void OnInitializePotentialDrag(PointerEventData data)
    {
        Debug.Log("OnInitializePotentialDrag called.");
    }

    public override void OnMove(AxisEventData data)
    {
        Debug.Log("OnMove called.");
    }

    public override void OnPointerClick(PointerEventData data)
    {
        Debug.Log("OnPointerClick called.");
    }

    public override void OnPointerDown(PointerEventData data)
    {
        Debug.Log("OnPointerDown called.");
    }

    public override void OnPointerEnter(PointerEventData data)
    {
        Debug.Log("OnPointerEnter called.");
    }

    public override void OnPointerExit(PointerEventData data)
    {
        Debug.Log("OnPointerExit called.");
    }

    public override void OnPointerUp(PointerEventData data)
    {
        Debug.Log("OnPointerUp called.");
    }

    public override void OnScroll(PointerEventData data)
    {
        Debug.Log("OnScroll called.");
    }

    public override void OnSelect(BaseEventData data)
    {
        Debug.Log("OnSelect called.");
    }

    public override void OnSubmit(BaseEventData data)
    {
        Debug.Log("OnSubmit called.");
    }

    public override void OnUpdateSelected(BaseEventData data)
    {
        Debug.Log("OnUpdateSelected called.");
    }
}

...or you can specify individual delegates:

using UnityEngine;
using UnityEngine.EventSystems;


public class EventTriggerDelegateExample : MonoBehaviour
{
    void Start()
    {
        EventTrigger trigger = GetComponent<EventTrigger>();
        EventTrigger.Entry entry = new EventTrigger.Entry();
        entry.eventID = EventTriggerType.PointerDown;
        entry.callback.AddListener((data) => { OnPointerDownDelegate((PointerEventData)data); });
        trigger.triggers.Add(entry);
    }

    public void OnPointerDownDelegate(PointerEventData data)
    {
        Debug.Log("OnPointerDownDelegate called.");
    }
}

Variables

Public Functions

Inherited members