InteractiveItem

See the InteractiveItemDemo class.

public void Draw()
{
    // Displays a heading for interactive items
    Gui.Heading("InteractiveItem");
    DrawInteractiveItem();

    // Displays a heading for selection handling using ItemSelectUpdater
    Gui.Heading("Using ItemSelectUpdater");
    DrawUsingItemSelectUpdater();

}
void DrawInteractiveItem()
{
    // Draws an interactive item and updates the selection state
    Gui.InteractiveItem(isSelectedItem);
    isSelectedItem = Ctx.IsLastSelected();
}

void DrawUsingItemSelectUpdater()
{
    using var s = Style.SpacingYs.Begin(0f);
    var itemSelectUpdater = new ItemSelectUpdater<int>(selection, Gui.Input, true);

    // Iterates through the selection items and renders interactive elements
    for (int i = 0; i < selection.Length; i++)
    {
        using var s2 = Ctx.PushId(i);

        var rect = Ctx.AllocateRect();

        // Draws an interactive item and checks if it's selected
        Gui.NextRect(rect).InteractiveItem(selection.IsSelected(i));

        // Updates selection state based on user interaction
        itemSelectUpdater.Update(i, Ctx.IsLastPressedThisFrame());

        // Logs when an item is hovered
        if (Ctx.IsLastHovered())
        {
            Logger.Debug($"Hovered:{i}");
        }

        Gui.NextRect(rect).Text($"{i}");
    }
}

/// <summary>
/// Implements item selection logic.
/// </summary>
class Selection : IItemSelection<int>
{
    readonly bool[] bools;

    public int Length => bools.Length;

    public Selection(int length)
    {
        bools = new bool[length];
    }

    public void Deselect(int item)
    {
        bools[item] = false;
    }

    public void DeselectAll()
    {
        for (int i = 0; i < bools.Length; i++)
            bools[i] = false;
    }

    public bool IsSelected(int item)
    {
        return bools[item];
    }

    public void Select(int item)
    {
        bools[item] = true;
    }
}