using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using iTextSharp.text.pdf;
using iTextSharp.text;
using VEPROMS.CSLA.Library;


namespace Volian.Print.Library
{
	public partial class vlnBox : vlnPrintObject
	{
		private static readonly log4net.ILog _MyLog = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
		private int _LineType;  /* how to represent?? */
		private System.Drawing.Color _Color;
		public System.Drawing.Color Color
		{
			get { return _Color; }
			set { _Color = value; }
		}
		private Box _MyBox;

		public Box MyBox
		{
			get { return _MyBox; }
			set { _MyBox = value; }
		}
		// the following two fields are used if 'boxed' step, thus
		// no 'Box' was defined in format file.
		public string DefBox = null;
		public float DefEnd = 0;
		public vlnBox()
		{
		}
		public vlnBox(vlnParagraph paragraph)
		{
		}
		public const string BoxThin = "\x2510.\x2500.\x250c.\x2502. . .\x2518.\x2514. .\x2500. . ";
		const string BoxThick = "\x2584.\x2584.\x2584.\x2588. . .\x2580.\x2580. .\x2580. . ";
		const string BoxDouble = "\x2557.\x2550.\x2554.\x2551. . .\x255D.\x255A. .\x2550. . ";
		const string BoxFPLNote = "\x2557.\x2550\xad.\x2554\xad.\x2551. . .\x255d.\x255a\xad. .\x2550\xad. . ";
		const string BoxFPLCaution = "\x2588.\x2580.\x2588.\x2588. . .\x2588.\x2588. .\x2584. . ";
		const string BoxAsterisk = " *.* .* . . . . *.* . .* . . ";
		const string BoxAsteriskWithSides = " *.* .* .* . . . *.* . .* . . ";

		public override float ToPdf(PdfContentByte cb, float yPageStart, ref float yTopMargin, ref float yBottomMargin)
		{
			if (MyBox == null) return yPageStart;
			cb.SaveState();
			VlnSvgPageHelper _MyPageHelper = cb.PdfWriter.PageEvent as VlnSvgPageHelper;
			PdfLayer textLayer = _MyPageHelper == null ? null : _MyPageHelper.TextLayer;
			if (textLayer != null) cb.BeginLayer(textLayer);
			MyContentByte = cb;
			//Console.WriteLine("'{0}','{1}'", CharToAsc(MyBox.BoxStyle), MyParent.MyItemInfo.ShortPath);
			float top = CalculateYOffset(yPageStart, yTopMargin) - (7*MyPageHelper.YMultiplier);
			float bottom = top - (Height * MyPageHelper.YMultiplier);
			float left = (float)((MyBox.Start ?? 0) + MyParent.MyItemInfo.MyDocStyle.Layout.LeftMargin);
			float right = (float)MyParent.MyItemInfo.MyDocStyle.Layout.LeftMargin + (float)(MyBox.End ?? DefEnd);
			iTextSharp.text.Color boxColor = new iTextSharp.text.Color(PrintOverride.OverrideBoxColor(System.Drawing.Color.Black));
			cb.SetColorStroke(boxColor);
			if (DefBox != null)
			{
				cb.SetLineWidth(.6F);
				cb.Rectangle(left, bottom, right - left, Height * MyPageHelper.YMultiplier);
			}
			else
			{
				const float llxOffset = 3;
				float lineThickness = 0;
				switch (MyBox.BoxStyle)
				{
					case BoxThin:
						lineThickness = .6F;
						cb.SetLineWidth(lineThickness);
						cb.Rectangle(left + llxOffset, bottom + (lineThickness / 2), right - left, (Height - lineThickness) * MyPageHelper.YMultiplier);
						break;
					case BoxThick:
						lineThickness = 6;
						cb.SetLineWidth(lineThickness);
						cb.Rectangle(left + llxOffset, bottom + (lineThickness / 2), right - left, (Height - lineThickness) * MyPageHelper.YMultiplier);
						break;
					case BoxDouble:
						lineThickness = .6F;
						cb.SetLineWidth(lineThickness);
						// outer rectangle  (rectangle's are defined as x,y,w,h)
						cb.Rectangle(left + llxOffset - lineThickness * 1.5F, bottom - lineThickness, right - left + lineThickness * 3, (Height + lineThickness * 2) * MyPageHelper.YMultiplier);
						// inner rectangle
						cb.Rectangle(left + llxOffset + lineThickness, bottom + lineThickness * 1.5F, right - left - lineThickness * 2, (Height - lineThickness * 3) * MyPageHelper.YMultiplier);
						break;
					case BoxFPLNote:
						lineThickness = 2;
						cb.SetLineWidth(lineThickness);
						float[] linePattern = { 6, 1.75F, 2.5F, 1.75F };
						cb.SetLineDash(linePattern,3);
						cb.Rectangle(left + llxOffset, bottom + (lineThickness / 2) -1, right - left, (2 + Height - lineThickness) * MyPageHelper.YMultiplier);
						break;
					case BoxFPLCaution:
						lineThickness = 3;
						cb.SetLineWidth(lineThickness);
						// use a Y adjustment (top & bottom) to make the caution box match the 16bit output.
						float YbxAdjust = 6.5F;
						cb.Rectangle(left + llxOffset, bottom - YbxAdjust + (lineThickness / 2), right - left, (Height - lineThickness + 2*YbxAdjust) * MyPageHelper.YMultiplier);
						break;
					case BoxAsterisk:
						// this box is not drawn, it is a series of asterisks drawn above and below text.  
						// For this box, there are no vertical edges (RGE uses this box type)
						DrawTopBottomAsterisk(cb, yPageStart, yTopMargin, yBottomMargin, ref top, ref bottom, left);
						break;
					case BoxAsteriskWithSides:
						DrawTopBottomAsterisk(cb, yPageStart, yTopMargin, yBottomMargin, ref top, ref bottom, left);
						DrawSideAsterisk(cb, yPageStart, yTopMargin, yBottomMargin, top, bottom, left, right);
						break;
					default:
						// For other than thick, thin and double.
						if (!_UnimplementedBoxStyles.Contains(MyBox.BoxStyle))
						{
							_UnimplementedBoxStyles.Add(MyBox.BoxStyle);
							_MyLog.InfoFormat("Unimplemented Box Style {0} {1}", ShowBoxStyle(MyBox.BoxStyle), MyParent.MyItemInfo.ShortPath);
							//Console.WriteLine("Unimplemented Box Style {0} {1}", ShowBoxStyle(MyBox.BoxStyle), MyParent.MyItemInfo.ShortPath);
						}
						break;
						//throw new Exception("Missing vlnBox handler");
				}
			}
			cb.Stroke();
			if (textLayer != null) cb.EndLayer();
			cb.RestoreState();
			return yPageStart;
		}

		private void DrawSideAsterisk(PdfContentByte cb, float yPageStart, float yTopMargin, float yBottomMargin, float top, float bottom, float left, float right)
		{
			top = CalculateYOffset(yPageStart, yTopMargin);
			bottom = top - (Height * MyPageHelper.YMultiplier);
			VE_Font vf = MyParent.MyItemInfo.FormatStepData.Font;

			// Left side first:
			string Rtf = GetRtf(MyBox.BXVert, vf);
			float vertDiff = top;
			float size = (float)(MyBox.BXVert.Length * (72 / vf.CPI));
			while (vertDiff > bottom)
			{
				Rtf2Pdf.TextAt(cb, IParagraph, left, vertDiff, size, 100, "", yBottomMargin);
				vertDiff -= (SixLinesPerInch * MyPageHelper.YMultiplier);
			}

			// right side:
			vertDiff = top;
			Rtf = GetRtf(MyBox.BXVert.TrimEnd(), vf);
			while (vertDiff > bottom)
			{
				if (MyBox.End != null)Rtf2Pdf.TextAt(cb, IParagraph, (float) MyBox.End, vertDiff, size, 100, "", yBottomMargin);
				vertDiff = (SixLinesPerInch * MyPageHelper.YMultiplier);
			}
		}

		private void DrawTopBottomAsterisk(PdfContentByte cb, float yPageStart, float yTopMargin, float yBottomMargin, ref float top, ref float bottom, float left)
		{
			top = CalculateYOffset(yPageStart, yTopMargin);
			bottom = top - (Height * MyPageHelper.YMultiplier);
			VE_Font vf = MyParent.MyItemInfo.FormatStepData.Font;

			// Top line first:
			StringBuilder sb = new StringBuilder();
			sb.Append(MyBox.BXVert);
			float size = (float)(MyBox.BXULC.Length * (72 / vf.CPI));
			while (size < MyBox.End)
			{
				sb.Append(MyBox.BXHorz);
				size = size + (float)(MyBox.BXHorz.Length * (72 / vf.CPI));
			}
			// Tack on the right upper corner. For some reason, the upper right corner in the
			// formats had the first character as a space, this would put two spaces in a row
			// at the end of the string, so remove the space before tacking on the upper right
			// corner:
			string bxstr = sb.ToString().TrimEnd() + MyBox.BXURC;
			size = size + (float)((MyBox.BXURC.Length) * (72 / vf.CPI));
			Rtf = GetRtf(bxstr, vf);
			Rtf2Pdf.TextAt(cb, IParagraph, left, top, size, 100, "", yBottomMargin);

			// Bottom line now 
			sb.Remove(0, sb.Length);
			sb.Append(MyBox.BXLLC);
			size = (float)(MyBox.BXLLC.Length * (72 / vf.CPI));
			while (size < MyBox.End)
			{
				sb.Append(MyBox.BXHorz);
				size = size + (float)(MyBox.BXHorz.Length * (72 / vf.CPI));
			}
			bxstr = sb.ToString().TrimEnd() + MyBox.BXLRC;
			size = size + (float)((MyBox.BXLRC.Length) * (72 / vf.CPI));
			Rtf = GetRtf(bxstr, vf);
			Rtf2Pdf.TextAt(cb, IParagraph, left, bottom, size, 100, "", yBottomMargin);
		}

		private string ShowBoxStyle(string str)
		{
			StringBuilder sb = new StringBuilder();
			foreach (Char c in str)
			{
				if (c >= ' ' && c < 128)
					sb.Append(c);
				else
					sb.Append(string.Format("x{0:X0000}", (int)c));
			}
			return sb.ToString();
		}
		private static List<string> _UnimplementedBoxStyles = new List<string>();
		private string CharToAsc(string p)
		{
			StringBuilder sb = new StringBuilder();
			foreach (char c in p)
			{
				if (c >= ' ' && c < 127) sb.Append(c);
				else sb.Append(string.Format("\\x{0:x}", (int)c));
			}
			return sb.ToString();
		}
	}
}