using System.Text;
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using System.Drawing;
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using System.Collections.Generic;
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//_5_1_a_s_p_x
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namespace LB_VisionControls
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{
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/// <summary>
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/// Exports colored text as HTML
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/// </summary>
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/// <remarks>At this time only TextStyle renderer is supported. Other styles is not exported.</remarks>
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public class ExportToHTML
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{
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public string LineNumbersCSS = "<style type=\"text/css\"> .lineNumber{font-family : monospace; font-size : small; font-style : normal; font-weight : normal; color : Teal; background-color : ThreedFace;} </style>";
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/// <summary>
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/// Use nbsp; instead space
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/// </summary>
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public bool UseNbsp { get; set; }
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/// <summary>
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/// Use nbsp; instead space in beginning of line
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/// </summary>
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public bool UseForwardNbsp { get; set; }
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/// <summary>
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/// Use original font
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/// </summary>
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public bool UseOriginalFont { get; set; }
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/// <summary>
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/// Use style tag instead style attribute
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/// </summary>
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public bool UseStyleTag { get; set; }
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/// <summary>
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/// Use br tag instead \n
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/// </summary>
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public bool UseBr { get; set; }
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/// <summary>
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/// Includes line numbers
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/// </summary>
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public bool IncludeLineNumbers { get; set; }
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FastColoredTextBox tb;
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public ExportToHTML()
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{
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UseNbsp = true;
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UseOriginalFont = true;
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UseStyleTag = true;
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UseBr = true;
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}
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public string GetHtml(FastColoredTextBox tb)
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{
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this.tb = tb;
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Range sel = new Range(tb);
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sel.SelectAll();
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return GetHtml(sel);
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}
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public string GetHtml(Range r)
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{
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this.tb = r.tb;
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Dictionary<StyleIndex, object> styles = new Dictionary<StyleIndex, object>();
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StringBuilder sb = new StringBuilder();
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StringBuilder tempSB = new StringBuilder();
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StyleIndex currentStyleId = StyleIndex.None;
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r.Normalize();
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int currentLine = r.Start.iLine;
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styles[currentStyleId] = null;
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//
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if (UseOriginalFont)
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sb.AppendFormat("<font style=\"font-family: {0}, monospace; font-size: {1}px; line-height: {2}px;\">",
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r.tb.Font.Name, r.tb.CharHeight - r.tb.LineInterval, r.tb.CharHeight);
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//
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if (IncludeLineNumbers)
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tempSB.AppendFormat("<span class=lineNumber>{0}</span> ", currentLine + 1);
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//
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bool hasNonSpace = false;
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foreach (Place p in r)
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{
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Char c = r.tb[p.iLine][p.iChar];
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if (c.style != currentStyleId)
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{
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Flush(sb, tempSB, currentStyleId);
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currentStyleId = c.style;
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styles[currentStyleId] = null;
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}
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if (p.iLine != currentLine)
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{
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for (int i = currentLine; i < p.iLine; i++)
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{
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tempSB.AppendLine(UseBr ? "<br>" : "");
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if (IncludeLineNumbers)
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tempSB.AppendFormat("<span class=lineNumber>{0}</span> ", i + 2);
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}
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currentLine = p.iLine;
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hasNonSpace = false;
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}
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switch (c.c)
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{
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case ' ':
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if ((hasNonSpace || !UseForwardNbsp) && !UseNbsp)
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goto default;
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tempSB.Append(" ");
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break;
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case '<':
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tempSB.Append("<");
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break;
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case '>':
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tempSB.Append(">");
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break;
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case '&':
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tempSB.Append("&");
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break;
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default:
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hasNonSpace = true;
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tempSB.Append(c.c);
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break;
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}
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}
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Flush(sb, tempSB, currentStyleId);
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if (UseOriginalFont)
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sb.AppendLine("</font>");
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//build styles
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if (UseStyleTag)
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{
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tempSB.Length = 0;
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tempSB.AppendLine("<style type=\"text/css\">");
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foreach (var styleId in styles.Keys)
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tempSB.AppendFormat(".fctb{0}{{ {1} }}\r\n", GetStyleName(styleId), GetCss(styleId));
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tempSB.AppendLine("</style>");
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sb.Insert(0, tempSB.ToString());
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}
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if (IncludeLineNumbers)
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sb.Insert(0, LineNumbersCSS);
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return sb.ToString();
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}
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private string GetCss(StyleIndex styleIndex)
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{
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List<Style> styles = new List<Style>();
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//find text renderer
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TextStyle textStyle = null;
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int mask = 1;
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bool hasTextStyle = false;
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for (int i = 0; i < tb.Styles.Length; i++)
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{
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if (tb.Styles[i] != null && ((int)styleIndex & mask) != 0)
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if (tb.Styles[i].IsExportable)
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{
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var style = tb.Styles[i];
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styles.Add(style);
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bool isTextStyle = style is TextStyle;
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if (isTextStyle)
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if (!hasTextStyle || tb.AllowSeveralTextStyleDrawing)
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{
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hasTextStyle = true;
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textStyle = style as TextStyle;
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}
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}
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mask = mask << 1;
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}
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//add TextStyle css
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string result = "";
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if (!hasTextStyle)
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{
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//draw by default renderer
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result = tb.DefaultStyle.GetCSS();
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}
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else
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{
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result = textStyle.GetCSS();
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}
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//add non TextStyle css
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foreach(var style in styles)
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if (style != textStyle)
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result += style.GetCSS();
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return result;
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}
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public static string GetColorAsString(Color color)
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{
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if(color==Color.Transparent)
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return "";
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return string.Format("#{0:x2}{1:x2}{2:x2}", color.R, color.G, color.B);
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}
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string GetStyleName(StyleIndex styleIndex)
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{
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return styleIndex.ToString().Replace(" ", "").Replace(",", "");
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}
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private void Flush(StringBuilder sb, StringBuilder tempSB, StyleIndex currentStyle)
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{
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//find textRenderer
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//var textStyle = styles.Where(s => s is TextStyle).FirstOrDefault();
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//
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if (tempSB.Length == 0)
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return;
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if (UseStyleTag)
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sb.AppendFormat("<font class=fctb{0}>{1}</font>", GetStyleName(currentStyle), tempSB.ToString());
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else
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{
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string css = GetCss(currentStyle);
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if(css!="")
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sb.AppendFormat("<font style=\"{0}\">", css);
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sb.Append(tempSB.ToString());
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if (css != "")
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sb.Append("</font>");
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}
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tempSB.Length = 0;
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}
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}
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}
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