Need Help with Nova UI in Unity: Capturing Hover and Drag Events During Button Press

Unity Engine
1

Hi everyone,

I’m working on a project in Unity, and I want to capture button interaction while another button is being pressed. I can see hover being triggered on each button… but that stops while I’m pressing and holding down on another button, and no more events come in while I drag over them.

I’ve don’t this with Unity built in UI, I have it working in a different app.

My goal is to:

Click on a button.
Drag across other buttons while holding the initial press.
Capture hover events for each button I drag over.
Perform an action based on the final button I release on.
Here’s what I’ve tried so far:

using Nova;
using UnityEngine;

public class SimpleButtonDragHandler : MonoBehaviour
{
private UIBlock initialButton;
private UIBlock lastHoveredButton;
private bool isDragging = false;

public int thisHr;

private void OnEnable()
{
    GetComponent<UIBlock>().AddGestureHandler<Gesture.OnPress>(OnPress);
    GetComponent<UIBlock>().AddGestureHandler<Gesture.OnDrag>(OnDrag);
    GetComponent<UIBlock>().AddGestureHandler<Gesture.OnHover>(OnHover);
    GetComponent<UIBlock>().AddGestureHandler<Gesture.OnRelease>(OnRelease);
}

private void OnDisable()
{
    GetComponent<UIBlock>().RemoveGestureHandler<Gesture.OnPress>(OnPress);
    GetComponent<UIBlock>().RemoveGestureHandler<Gesture.OnDrag>(OnDrag);
    GetComponent<UIBlock>().RemoveGestureHandler<Gesture.OnHover>(OnHover);
    GetComponent<UIBlock>().RemoveGestureHandler<Gesture.OnRelease>(OnRelease);
}

private void OnPress(Gesture.OnPress evt)
{
    Debug.Log("Pressed: " + thisHr);
    evt.Consume();

    if (evt.Target.TryGetComponent<UIBlock>(out UIBlock button))
    {
        initialButton = button;
        isDragging = true;
        Debug.Log("Pressed button: " + initialButton.name);
    }
}

private void OnDrag(Gesture.OnDrag evt)
{
    if (isDragging)
    {
        Debug.Log("Dragging: " + thisHr);
        evt.Consume();

        if (evt.Target.TryGetComponent<UIBlock>(out UIBlock button) && button != lastHoveredButton)
        {
            lastHoveredButton = button;
            Debug.Log("Dragging over button: " + button.name);
        }
    }
}

private void OnHover(Gesture.OnHover evt)
{
    Debug.Log("Hovering: " + thisHr);
    evt.Consume();

    if (isDragging)
    {
        Debug.Log("Hover event detected during drag.");
        if (evt.Target.TryGetComponent<UIBlock>(out UIBlock button) && button != initialButton && button != lastHoveredButton)
        {
            lastHoveredButton = button;
            Debug.Log("Hovered over button: " + button.name);
        }
    }
}

private void OnRelease(Gesture.OnRelease evt)
{
    Debug.Log("Released: " + thisHr);
    evt.Consume();

    if (isDragging)
    {
        isDragging = false;
        if (lastHoveredButton != null)
        {
            Debug.Log("Released on button: " + lastHoveredButton.name);
        }
    }
}

}

Scene Setup:
Each button has both UIBlock2D and Interactable components.
The script is attached to each button, with unique identifiers set in the thisHr field for debugging.

Issue:
Only the OnPress event logs appear, and the OnDrag and OnHover events are not triggering during the drag.

Request:
Can anyone provide insights or suggestions on how to correctly capture and handle hover and drag events in Nova UI during a button press? Any help or examples would be greatly appreciated!

Thanks in advance!