FormMain.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace TableViewExample
{
    using Wind.Controls;

    public partial class FormMain : Form
    {
        public FormMain()
        {
            InitializeComponent ();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Padding = new System.Windows.Forms.Padding (10);
            tv.Parent = this;
            tv.Dock = DockStyle.Fill;
            ExampleCell.VR.AutoSize = true;
            ExampleCell.ColumnHR.AutoSize = true;
            //ExampleCell.ColumnHR.Header = true;
            tv.Model = new ExampleModel ();

            /*Dictionary<EventArgs, int> t = new Dictionary<EventArgs, int> ();
            Stopwatch s = new Stopwatch ();
            List<EventArgs> _lst = new List<EventArgs> ();
            for (int i = 0; i < 10000; i++) _lst.Add (new EventArgs ());
            s.Start ();
            foreach (var i in _lst) t.Add (i, 10);
            s.Stop ();
            MessageBox.Show(s.ElapsedMilliseconds.ToString());*/
        }

        private WTableViewBridge tv = new WTableView ();
    }// public partial class FormMain

    // Now that all of this works, creating a TreeViewCell is meh :).
    class ExampleCell : IWTableViewCell // (ColumnHeader + Data)Cell; usually you want these to be separate cells - more simple code
    {
        private bool _update = false;
        private bool _column_header = false;

        // there will be text rendering
        private string _text = "";
        private int _tx = 0, _ty = 0, _tw = 0, _th = 0;
        private StringFormat _text_fmt = new StringFormat ();
        private Font _text_font = SystemFonts.DefaultFont; // never do this at a render proc

        static bool _VR_SizeChanged_the_way_is_shut = false; // an event handler shouldn't cause events it has to handle

        public ExampleCell(bool column_header, string text)
        {
            _column_header = column_header;
            _text = text;
            _update = true;
            _text_fmt.Alignment = StringAlignment.Center;
            _text_fmt.LineAlignment = StringAlignment.Center;
            VR.SizeChanged += (d) =>
            {
                if (_VR_SizeChanged_the_way_is_shut)
                    throw new Exception ("Event-driven! Please do not trouble trouble 'till it troubles you.");
                _VR_SizeChanged_the_way_is_shut = true;
                try
                {
                    // put all event handling code here, only
                    UpdateLayout ();
                }
                finally { _VR_SizeChanged_the_way_is_shut = false; }
            };
        }
        // use global defaults
        public static WTableViewRange HR = new WTableViewRange ();
        public static WTableViewRange VR = new WTableViewRange ();
        public static WTableViewRange ColumnHR = new WTableViewRange ();

        #region ITableViewCell Members
        public WTableViewRange HRange { get { return _column_header ? ColumnHR : HR; } }
        public WTableViewRange VRange { get { return VR; } }
        public bool Selected { get { return false; } set { } }
        public bool Changed { get { return _update; } set { _update = value; } }
        private void UpdateLayout()
        {
            // This is foolish - I really need "freetype2" here; how to auto "..." the string so it can fit given width?
            // Measure 20 times?
            _tx = WTableView.Align2 (VR.Size - _tw) / 2; // horizontal center| this is just an example - otherwise you should use the range alignment;
            _ty = WTableView.Align2 ((_column_header ? ColumnHR.Size : HR.Size) - _th) / 2; // vertical center | its highly recommended to create a CellRenderer to handle these things
            //Debug.Write (string.Format ("w: {0}, tw: {1}, tx: {2}, ", VR.Size, _tw, _tx));
            //Debug.WriteLine (string.Format ("h: {0}, th: {1}, ty: {2}", HR.Size, _th, _ty));
        }
        public Size Measure(WGraphicsContext gc)
        {
            if (!_update) return new Size (VR.Size, HR.Size);
            var ts = gc.MeasureText (_text, SystemFonts.DefaultFont);
            _tw = ts.Width;
            _th = ts.Height;
            _update = false;
            VR.UpdateSize (WTableView.Align2 (_tw));
            if (_column_header) ColumnHR.UpdateSize (WTableView.Align2 (_th));
            else HR.UpdateSize (WTableView.Align2 (_th));
            UpdateLayout ();
            return new Size (VR.Size, _column_header ? ColumnHR.Size : HR.Size); // update the range - a.k.a. layout
        }
        public void Render(WGraphicsContext gc)
        {
            gc.FillRectangle ((_column_header ? Brushes.PaleGreen : Brushes.LightBlue), 0, 0, VR.Size,
                _column_header ? ColumnHR.Size : HR.Size);
            //TODO it takes a lot of time and code to not render out of the cell; just use "freetype2" here
            if (_tx < 0 || _ty < 0)
                gc.DrawString (_text, SystemFonts.DefaultFont, Brushes.Black,
                    new RectangleF (0, 0, VR.Size, HR.Size), _text_fmt);
            else gc.DrawString (_text, _text_font, Brushes.Black, _tx, _ty);
        }
        public bool New { get { return false; } set { } }
        #endregion
    }// class ExampleCell

    class ExampleModel : IWTableViewModel
    {
        class CellStream // this should be your actual data
        {
            public CellStream(bool h) { hcell = h; }
            public bool hcell = false;
            public long row_ptr = 0; // rc pointer
            public long col_ptr = 0; //
            public ExampleCell cell = null;
            //public IEnumerable<ITableViewCell> Get(int num = 1)
            public IWTableViewCell Get()
            {
                /*if (num < 1) return null;
                var result = new List<ExampleCell> (num);
                for (int i = 0; i < num; i++) result.Add (
                    new ExampleCell (hcell, string.Format ("x:{0}, y:{1}", col_ptr, row_ptr)));
                return result;*/
                return new ExampleCell (hcell, string.Format ("x:{0}, y:{1}", col_ptr, row_ptr));
            }
            //private long _rptr = 0;
            //private long _cptr = 0;
            //public void Push() { _rptr = row_ptr; _cptr = col_ptr; }
            //public void Pop() { row_ptr = _rptr; col_ptr = _cptr; }
        }// class CellStream
        CellStream header_cell_stream = new CellStream (true);
        CellStream data_cell_stream = new CellStream (false);
        CellStream[] streams = null;
        private int _stream = 0;
        public ExampleModel()
        {
            streams = new CellStream[2] { header_cell_stream, data_cell_stream };
        }
        #region ITableViewModel Members
        public IWTableViewCell Current { get { return streams[_stream].Get (); } }
        public bool Move(int column_offset, int row_offset)
        {
            if (column_offset != 0) { streams[_stream].col_ptr += column_offset; }
            if (row_offset != 0)
            {
                if (0 == _stream) return false; // column header is one row
                streams[_stream].row_ptr += row_offset;
            }
            return true;
        }
        public IWTableViewModel ColumnHeaderStream() { _stream = 0; return this; }
        public IWTableViewModel DataStream() { _stream = 1; return this; }
        public void Set(IEnumerable<IWTableViewCell> cells) { throw new NotImplementedException (); }
        public long SizeVertical { get { return 0; } } // endless stream
        public long SizeHorizontal { get { return 0; } } // endless stream
        #endregion
    }// class ExampleModel
}