Symbol and TF information as background

using cAlgo.API;
using cAlgo.API.Internals;

namespace cAlgo
{
    [Indicator(AccessRights = AccessRights.None, IsOverlay = true)]
    public class AksBackgroundSymbolName : Indicator
    {
        [Parameter("Symbol Font Size", DefaultValue = 72)]
        public int SymbolFontSize { get; set; }

        [Parameter("Symbol Color", DefaultValue = "Gray")]
        public Color SymbolColor { get; set; }

        [Parameter("Timeframe Font Size", DefaultValue = 28)]
        public int TfFontSize { get; set; }

        [Parameter("Timeframe Color", DefaultValue = "Gray")]
        public Color TfColor { get; set; }

        [Parameter("Opacity", DefaultValue = 0.25, MaxValue = 1, MinValue = 0)]
        public double Opacity { get; set; }

        [Parameter("Horizontal Alignment", DefaultValue = HorizontalAlignment.Center)]
        public HorizontalAlignment HorAlign { get; set; }

        [Parameter("Vertical Alignment", DefaultValue = VerticalAlignment.Center)]
        public VerticalAlignment VerAlign { get; set; }


        protected override void Initialize()
        {
            TextBlock textBlock = new()
            {
                Text = Symbol.Name,
                FontSize = SymbolFontSize,
                ForegroundColor = SymbolColor,
                Opacity = Opacity,
                HorizontalAlignment = HorizontalAlignment.Center,
                VerticalAlignment = VerticalAlignment.Center,
            };

            TextBlock timeframe = new()
            {
                Text = Chart.TimeFrame.ShortName,
                FontSize = TfFontSize,
                ForegroundColor = TfColor,
                Opacity = Opacity,
                HorizontalAlignment = HorizontalAlignment.Center,
                VerticalAlignment = VerticalAlignment.Center,
            };

            Grid grid = new(2, 1);
            grid.AddChild(textBlock, 0, 0);
            grid.AddChild(timeframe, 1, 0);
            grid.HorizontalAlignment = HorAlign;
            grid.VerticalAlignment = VerAlign;
            grid.IsHitTestVisible = false;

            Chart.AddControl(grid);
        }

        public override void Calculate(int index)
        {}
    }
}