public static string GetRtfText(string rawtext, Graphics gr, Color backcolor, int fontsize)
{
MathML.Rendering.WinGraphicsRenderer _mmlRendering = new MathML.Rendering.WinGraphicsRenderer();
_mmlRendering.BackColor = backcolor;
_mmlRendering.FontSize = fontsize;
StringBuilder stb = new StringBuilder();
ComposeText(stb, rawtext, _mmlRendering, gr);
stb.Append(texttrailer);
return stb.ToString();
}
public static string GetRtfText(string rawtext, Graphics gr, Color backcolor, int fontsize)
{
MathML.Rendering.WinGraphicsRenderer _mmlRendering = new MathML.Rendering.WinGraphicsRenderer();
_mmlRendering.BackColor = backcolor;
_mmlRendering.FontSize = fontsize;
StringBuilder stb = new StringBuilder();
ComposeText(stb, rawtext, _mmlRendering, gr);
stb.Append(texttrailer);
return(stb.ToString());
}
static void ComposeText(StringBuilder stb, string rawtext, MathML.Rendering.WinGraphicsRenderer _mmlRendering, Graphics gr)
{
if (stb.Length == 0)
{
stb.Append(textheader);
}
int currpos = 0;
for (; ;)
{
int startidx = rawtext.IndexOf("<math>", currpos);
if (startidx < 0)
{
break;
}
int endidx = rawtext.IndexOf("</math>", startidx);
if (endidx < 0)
{
break;
}
endidx += "</math>".Length;
// all text from currpos to startidx-1 can be copyied to the stringbuilder
stb.Append(rawtext, currpos, startidx - currpos);
// all text from startidx to endidx-1 must be loaded into the control and rendered
System.IO.StringReader rd = new StringReader(rawtext.Substring(startidx, endidx - startidx));
MathML.MathMLDocument doc = new MathML.MathMLDocument();
doc.Load(rd);
rd.Close();
_mmlRendering.SetMathElement((MathML.MathMLMathElement)doc.DocumentElement);
System.Drawing.Image mf = _mmlRendering.GetImage(typeof(Bitmap), gr);
GraphicsUnit unit = GraphicsUnit.Point;
RectangleF rect = mf.GetBounds(ref unit);
string imagetext = GetRtfImage(mf);
stb.Append(imageheader);
stb.Append(@"\picwgoal" + Math.Ceiling(15 * rect.Width).ToString());
stb.Append(@"\pichgoal" + Math.Ceiling(15 * rect.Height).ToString());
stb.Append(" ");
stb.Append(imagetext);
stb.Append(imagetrailer);
currpos = endidx;
}
stb.Append(rawtext, currpos, rawtext.Length - currpos);
}