Show a message after hover the mouse over a Collider o GUI element using UniRx

Unity Engine
1

Hi Everyone! i am looking for an elegant way to display a popup or something like that after the user places the mouse cursor over something for X seconds straight.

i am looking something like this

var startFrame = Time.frameCount;
            var printer = this.OnMouseOverAsObservable();
            printer
                .Buffer(printer.Throttle(TimeSpan.FromSeconds(2f)))
                .Where(list => list.Count == Time.frameCount - startFrame)
                .Subscribe(_ => print("hello!"));

counting the frames in which the OnMouseOverAsObservable was called

this, btw, doesn’t work properly.

Any thoughts?

2 
using UnityEngine;
using UniRx;
using UniRx.Triggers;
using System;
using UnityEngine.EventSystems;

public class ObservableLongPointerDownTrigger : ObservableTriggerBase, IPointerEnterHandler, IPointerExitHandler
{
    public float IntervalSecond = 1f;

    Subject<Unit> onLongPointerDown;

    float? raiseTime;
    private void Start()
    {
        var hover = this.UpdateAsObservable()
            .Where(_ => raiseTime != null && raiseTime <= Time.realtimeSinceStartup)
            .Subscribe(_ =>
            {
                if (onLongPointerDown != null) onLongPointerDown.OnNext(Unit.Default);
                raiseTime = null;
            });

        var enter = this.OnMouseEnterAsObservable()
            .Subscribe(_ =>
            {
                raiseTime = Time.realtimeSinceStartup + IntervalSecond;

            });
        var exit = this.OnMouseExitAsObservable()
            .Subscribe(_ =>
            {
                raiseTime = null;

            });
    }
    void Update()
    {
        if (raiseTime != null && raiseTime <= Time.realtimeSinceStartup)
        {
            if (onLongPointerDown != null) onLongPointerDown.OnNext(Unit.Default);
            raiseTime = null;
        }
    }

    public IObservable<Unit> OnLongPointerDownAsObservable()
    {
        return onLongPointerDown ?? (onLongPointerDown = new Subject<Unit>());
    }

    protected override void RaiseOnCompletedOnDestroy()
    {
        if (onLongPointerDown != null)
        {
            onLongPointerDown.OnCompleted();
        }
    }

    public void OnPointerEnter(PointerEventData eventData)
    {
        raiseTime = Time.realtimeSinceStartup + IntervalSecond;
    }

    public void OnPointerExit(PointerEventData eventData)
    {

        raiseTime = null;
    }
}
public class Hoverable : MonoBehaviour
{

    void Awake()
    {
        var trigger = gameObject.AddComponent<ObservableLongPointerDownTrigger>();

        trigger.OnLongPointerDownAsObservable().Subscribe(_ => print("HOVERING"));
    }

}