UxmlTraits is deprecated and will be removed. Use UxmlElementAttribute instead.

[Fenikkel]

Hi, and thanks for the nice code.

The issue is that at least in Unity 6 (preview), it shows a warning about UxmlTraits being obsolete.

I've tried to update it, but I can't. Do you have any idea how to fix this bug in the future?

Thanks.

[Fenikkel]

Ok, I find the solution. It only works on Unity 6 and forwards:

`using System; using UnityEngine; using UnityEngine.UIElements;

/* Disclaimer: Minimum version compatible -> Unity 6

TODO: Make non-editable the Spacing property in the UI Builder

*/

[UxmlElement("SafeArea")] // Cannot contain special characters public partial class SafeAreaManager : VisualElement { [UxmlAttribute] public SafeAreaSpacing SafeAreaType { get; set; }

public enum SafeAreaSpacing
{
    Margin, // Makes visible the screen behind or the camera background
    Padding // Makes visible the background of the visual element (SafeArea)
}

public SafeAreaManager() // Constructors are called on Awake()
{
    style.flexGrow = 1;
    style.flexShrink = 1;
    RegisterCallback<GeometryChangedEvent>(LayoutChanged);
}

private void LayoutChanged(GeometryChangedEvent geomentryChangedEvent)
{
    try
    {
        (Vector2 leftTop, Vector2 rightBottom) = SafeArea();

        switch (SafeAreaType)
        {
            case SafeAreaSpacing.Margin:
                style.marginLeft = leftTop.x;
                style.marginTop = leftTop.y;
                style.marginRight = rightBottom.x;
                style.marginBottom = rightBottom.y;
                break;

            case SafeAreaSpacing.Padding:
                style.paddingLeft = leftTop.x;
                style.paddingTop = leftTop.y;
                style.paddingRight = rightBottom.x;
                style.paddingBottom = rightBottom.y;
                break;

            default:
                Debug.LogWarning("Not implemented");
                break;
        }
    }
    catch (InvalidCastException){} // Throwed each time we safe the in the UI Builder
}

private (Vector2, Vector2) SafeArea()
{
    Rect safeArea = Screen.safeArea;

    Vector2 leftTop = RuntimePanelUtils.ScreenToPanel(this.panel,
        new Vector2(safeArea.xMin, Screen.height - safeArea.yMax));

    Vector2 rightBottom = RuntimePanelUtils.ScreenToPanel(this.panel,
        new Vector2(Screen.width - safeArea.xMax, safeArea.yMin));

    return (leftTop, rightBottom);
}

}`