using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;

using BizHawk.Client.Common;
using BizHawk.Client.EmuHawk.CustomControls;

namespace BizHawk.Client.EmuHawk
{
	public class HexView : Control
	{
		//private readonly IControlRenderer _renderer;
		private readonly Font NormalFont;
		private Size _charSize;

		private long _arrayLength;

		public HexView()
		{
			NormalFont = new Font("Courier New", 8);  // Only support fixed width

			SetStyle(ControlStyles.AllPaintingInWmPaint, true);
			SetStyle(ControlStyles.UserPaint, true);
			SetStyle(ControlStyles.SupportsTransparentBackColor, true);
			SetStyle(ControlStyles.Opaque, true);

			//_renderer = new GdiRenderer();

			//using (var g = CreateGraphics())
			//using (var LCK = _renderer.LockGraphics(g))
			//{
			//	_charSize = _renderer.MeasureString("A", NormalFont); // TODO make this a property so changing it updates other values.
			//}
		}

		protected override void Dispose(bool disposing)
		{
			//_renderer.Dispose();

			NormalFont.Dispose();

			base.Dispose(disposing);
		}

		#region Paint

		protected override void OnPaint(PaintEventArgs e)
		{
			//using (var lck = _renderer.LockGraphics(e.Graphics))
			//{
			//	_renderer.StartOffScreenBitmap(Width, Height);

			//	// White Background
			//	_renderer.SetBrush(Color.White);
			//	_renderer.SetSolidPen(Color.White);
			//	_renderer.FillRectangle(0, 0, Width, Height);


			//	_renderer.DrawString("Hello World", new Point(10, 10));

			//	_renderer.CopyToScreen();
			//	_renderer.EndOffScreenBitmap();
			//}
		}

		#endregion

		#region Properties

		/// <summary>
		/// Gets or sets the sets the virtual number of the length of the array to display
		/// </summary>
		[Category("Behavior")]
		public long ArrayLength
		{
			get
			{
				return _arrayLength;
			}

			set
			{
				_arrayLength = value;
				RecalculateScrollBars();
			}
		}

		#endregion

		#region Event Handlers

		[Category("Virtual")]
		public event QueryIndexValueHandler QueryIndexValue;

		[Category("Virtual")]
		public event QueryIndexBkColorHandler QueryIndexBgColor;

		[Category("Virtual")]
		public event QueryIndexForeColorHandler QueryIndexForeColor;

		public delegate void QueryIndexValueHandler(int index, out long value);

		public delegate void QueryIndexBkColorHandler(int index, ref Color color);

		public delegate void QueryIndexForeColorHandler(int index, ref Color color);

		#endregion

		private void RecalculateScrollBars()
		{
		}
	}
}