recrownedgtk/RecrownedAthenaeum/UI/Modular/Modules/Interactive/Button.cs

using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using RecrownedAthenaeum.UI.Modular;
using RecrownedAthenaeum.DataTypes;
using RecrownedAthenaeum.Input;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace RecrownedAthenaeum.UI.Modular.Modules.Interactive
{
    public delegate bool Clicked();

    public class Button : UIModule
    {
        private NinePatch background;
        public event Clicked Listeners;

        public Button(NinePatch background = null)
        {
            this.background = background;
        }

        public override void Draw(SpriteBatch batch)
        {
            background?.Draw(batch, bounds);
            base.Draw(batch);
        }

        public sealed override bool MouseStateChanged(MouseState state)
        {
            if (InputUtilities.MouseWithinBoundries(bounds))
            {
                if (InputUtilities.MouseClicked())
                {
                    OnClick();
                }
                Highlighted = true;
            }
            else
            {
                Highlighted = false;
            }

            return base.MouseStateChanged(state);
        }

        public sealed override bool KeyboardStateChanged(KeyboardState state)
        {
            return base.KeyboardStateChanged(state);
        }

        protected void OnClick()
        {
            Listeners?.Invoke();
        }

        public bool Highlighted { get; private set; }
    }
}