GuiHeader.cs

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using Loot.Ext;
using Loot.UI.Common;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Terraria;
using Terraria.UI;

namespace Loot.UI
{
    internal class GuiHeader : UIElement
    {
        private string _headerText;

        public int GetOffset() => Assets.Textures.GUI.HeaderTexture.Height;

        public void SetHeader(string newText)
        {
            _headerText = newText;
        }

        public override void OnInitialize()
        {
            Width.Set(Assets.Textures.GUI.HeaderTexture.Width, 0);
            Height.Set(Assets.Textures.GUI.HeaderTexture.Height, 0);
        }

        protected override void DrawSelf(SpriteBatch spriteBatch)
        {
            var parentBounds = GetOuterDimensions().ToRectangle();

            var _header = Assets.Textures.GUI.HeaderTexture;
            spriteBatch.Draw(
                _header,
                _header.BoundsFromParent(parentBounds),
                Color.White
            );

            var _decoration = Assets.Textures.GUI.SkullDecorationTexture;
            var decorationBounds = _decoration.BoundsFromParent(parentBounds);
            decorationBounds.Offset((int)(Width.Pixels * 0.5f - _decoration.Width * 0.5f), (int)(-_decoration.Height * 0.5f));

            spriteBatch.Draw(
                _decoration,
                decorationBounds,
                Color.White
            );

            var textPos = GetOuterDimensions().Center();
            var measure = Main.fontMouseText.MeasureString(_headerText);
            textPos.X -= measure.X * 0.5f;
            textPos.Y -= measure.Y * 0.3725f;

            Utils.DrawBorderStringFourWay(
                spriteBatch,
                Main.fontMouseText,
                _headerText,
                textPos.X,
                textPos.Y,
                Color.White,
                Color.Black,
                Vector2.Zero
            );
        }
    }
}