Controls Library: Extended ListView with Column Mapping

using System;
using System.ComponentModel;
using System.IO;
using Gdk;
using Gtk;
using dwf.gui;
using Pango;
using dwf.tool;

namespace DSBarCode
{
	/// <summary>
	/// Bar code ctrl.
	/// http://www.codeproject.com/KB/miscctrl/barcodectl.aspx
	/// </summary>
	public class BarCodeCtrl : DrawingArea
	{
        
		public enum AlignType
		{
			Left,
			Center,
			Right
		}

		public enum BarCodeWeight
		{
			Small = 1,
			Medium,
			Large
		}

		private AlignType align = AlignType.Center;
		private String code = "1234567890";
		private int leftMargin = 10;
		private int topMargin = 10;
		private int height = 50;
		private bool showHeader;
		private bool showFooter;
		private String headerText = "BarCode Demo";
		private BarCodeWeight weight = BarCodeWeight.Small;
		private FontDescription headerFont = FontDescription.FromString("Courier 18");
		private FontDescription footerFont = FontDescription.FromString("Courier 8");

		public AlignType VertAlign {
			get { return align; }
			set { align = value;
				QueueDraw(); }
		}

		public String BarCode {
			get { return code; }
			set { code = value.ToUpper ();
				QueueDraw(); }
		}

		public int BarCodeHeight {
			get { return height; }
			set { height = value;
				QueueDraw(); }
		}

		public int LeftMargin {
			get { return leftMargin; }
			set { leftMargin = value;
				QueueDraw(); }
		}

		public int TopMargin {
			get { return topMargin; }
			set { topMargin = value;
				QueueDraw(); }
		}

		public bool ShowHeader {
			get { return showHeader; }
			set { showHeader = value;
				QueueDraw(); }
		}

		public bool ShowFooter {
			get { return showFooter; }
			set { showFooter = value;
				QueueDraw(); }
		}

		public String HeaderText {
			get { return headerText; }
			set { headerText = value;
				QueueDraw(); }
		}

		public BarCodeWeight Weight {
			get { return weight; }
			set { weight = value;
				QueueDraw(); }
		}

		public FontDescription HeaderFont {
			get { return headerFont; }
			set { headerFont = value;
				QueueDraw(); }
		}

		public FontDescription FooterFont {
			get { return footerFont; }
			set { footerFont = value;
				QueueDraw(); }
		}

		public BarCodeCtrl ()
		{
			this.Name = "BarCodeCtrl";
			this.AddEvents ( (int)Gdk.EventMask.ExposureMask);
			//this.Size = new System.Drawing.Size (424, 240);
		}

//		public void Print ()
//		{
//			PrintDialog pd = new PrintDialog ();
//			pd.Document = printDocument1;
//
//			if (pd.ShowDialog () == DialogResult.OK) {
//				pd.Document.Print ();
//			}
//		}

		public String alphabet39 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%*";
        public String[] coded39Char = 
		{
		/* 0 */ "000110100", 
		/* 1 */ "100100001", 
		/* 2 */ "001100001", 
		/* 3 */ "101100000",
		/* 4 */ "000110001", 
		/* 5 */ "100110000", 
		/* 6 */ "001110000", 
		/* 7 */ "000100101",
		/* 8 */ "100100100", 
		/* 9 */ "001100100", 
		/* A */ "100001001", 
		/* B */ "001001001",
		/* C */ "101001000", 
		/* D */ "000011001", 
		/* E */ "100011000", 
		/* F */ "001011000",
		/* G */ "000001101", 
		/* H */ "100001100", 
		/* I */ "001001100", 
		/* J */ "000011100",
		/* K */ "100000011", 
		/* L */ "001000011", 
		/* M */ "101000010", 
		/* N */ "000010011",
		/* O */ "100010010", 
		/* P */ "001010010", 
		/* Q */ "000000111", 
		/* R */ "100000110",
		/* S */ "001000110", 
		/* T */ "000010110", 
		/* U */ "110000001", 
		/* V */ "011000001",
		/* W */ "111000000", 
		/* X */ "010010001", 
		/* Y */ "110010000", 
		/* Z */ "011010000",
		/* - */ "010000101", 
		/* . */ "110000100", 
		/*' '*/ "011000100",
		/* $ */ "010101000",
		/* / */ "010100010", 
		/* + */ "010001010", 
		/* % */ "000101010", 
		/* * */ "010010100" 
		};

		protected override bool OnExposeEvent (EventExpose evnt)
		{
			bool basef = base.OnExposeEvent (evnt);
			GraphContext gc = new GraphContext(Gtk.DotNet.Graphics.FromDrawable(evnt.Window));
			Paint (gc, GuiTool.FromGdkRect( Allocation));
			gc.Dispose();
			return basef;
		}
        
//		private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
//        {
//            panel1_Paint(sender, new PaintEventArgs(e.Graphics, this.ClientRectangle));
//        }
		
		public void Paint (GraphContext gc, System.Drawing.RectangleF rect)
		{
			
//			String intercharacterGap = "0";
//			String str = '*' + code.ToUpper () + '*';
//			int strLength = str.Length;
//
//			for (int i = 0; i < code.Length; i++) {
//				if (alphabet39.IndexOf (code [i]) == -1 || code [i] == '*') {
//					GuiService.PaintText (gc, "INVALID BAR CODE TEXT", rect, 
//					                     headerFont, new Cairo.Color (1, 1, 1), 0);
//					return;
//				}
//			}
//
//			String encodedString = "";
//
//			for (int i = 0; i < strLength; i++) {
//				if (i > 0)
//					encodedString += intercharacterGap;
//
//				encodedString += coded39Char [alphabet39.IndexOf (str [i])];
//			}
//
//			int encodedStringLength = encodedString.Length;
//			int widthOfBarCodeString = 0;
//			double wideToNarrowRatio = 3;
//
//
//			if (align != AlignType.Left) {
//				for (int i = 0; i < encodedStringLength; i++) {
//					if (encodedString [i] == '1')
//						widthOfBarCodeString += (int)(wideToNarrowRatio * (int)weight);
//					else
//						widthOfBarCodeString += (int)weight;
//				}
//			}
//
//			int x = 0;
//			int wid = 0;
//			int yTop = 0;
//            
//			Size hSize = GuiService.Measure (this, this.Style.FontDescription, 0, headerText);
//			Size fSize = GuiService.Measure (this, this.Style.FontDescription, 0, code);
//
//			int headerX = 0;
//			int footerX = 0;
//
//			if (align == AlignType.Left) {
//				x = leftMargin;
//				headerX = leftMargin;
//				footerX = leftMargin;
//			} else if (align == AlignType.Center) {
//				x = (rect.Width - widthOfBarCodeString) / 2;
//				headerX = (rect.Width - (int)hSize.Width) / 2;
//				footerX = (rect.Width - (int)fSize.Width) / 2;
//			} else {
//				x = rect.Width - widthOfBarCodeString - leftMargin;
//				headerX = rect.Width - (int)hSize.Width - leftMargin;
//				footerX = rect.Width - (int)fSize.Width - leftMargin;
//			}
//
//			if (showHeader) {
//				yTop = (int)hSize.Height + topMargin;
//				GuiService.PaintText (gc, headerText, 
//				                     new Gdk.Rectangle (headerX, topMargin, hSize.Width, hSize.Height),
//				                     headerFont, new Cairo.Color (1, 1, 1),0);
//			} else {
//				yTop = topMargin;
//			}
//
//			for (int i = 0; i < encodedStringLength; i++) {
//				if (encodedString [i] == '1')
//					wid = (int)(wideToNarrowRatio * (int)weight);
//				else
//					wid = (int)weight;
//				if (i % 2 == 0)
//					gc.Cairo.SetSourceRGB (0, 0, 0);
//				else
//					gc.Cairo.SetSourceRGB (1, 1, 1);
//				gc.Cairo.Rectangle (x, yTop, wid, height);
//				gc.Cairo.Fill();
//				x += wid;
//			}
//
//			yTop += height;
//
//			if (showFooter)
//				GuiService.PaintText (gc, code, 
//				                     new Gdk.Rectangle (footerX, yTop, fSize.Width, fSize.Height),
//				                     footerFont, new Cairo.Color (1, 1, 1),0);
		}
		
		public void SaveImage (String file)
		{
//			Cairo.ImageSurface surf = new Cairo.ImageSurface (Cairo.Format.Argb32, Allocation.Width, Allocation.Height);				
//			Cairo.Context gr = new Cairo.Context (surf);
//			GraphContext gc = new GraphContext(gr);
//			Paint (gc, Allocation);
//			gc.Dispose();
//			surf.WriteToPng (file);
		}
		
		
	}
}