private EquationObj Wmf2Equation(ImageNode imageNode)
{
EquationObj equationObj = new EquationObj();
ConvertEquation ce = new ConvertEquation();
EquationInput ei = new EquationInputFileWMF(imageNode.GetByteData());
string strEquation = ce.ConvertToText(ei);
Regex regex = new Regex(@"<([^>]+)>(.*?)</\1>");
var v = regex.Match(strEquation);
string latexString = v.Groups[2].ToString();
if (latexString.Length > 0)
{
equationObj.attr("latex", latexString);
}
string gifBase64Code = "";
Image gifbit = ce.ConvertToGif(ei);
if (gifbit != null)
{
gifBase64Code = ImageToBase64(gifbit, ImageFormat.Gif);
equationObj.content = gifBase64Code;
equationObj.attr("width", gifbit.Width);
equationObj.attr("height", gifbit.Height);
}
return(equationObj);
}
private RtfTree _ConvertObject(RtfTree tree)
{
RtfNodeCollection nodes = tree.RootNode.SelectNodes("object");
//RtfNodeCollection nodes = tree.RootNode.ChildNodes;
foreach (RtfTreeNode n in nodes)
{
ObjectNode objectNode = new ObjectNode(n.ParentNode);
if (objectNode.ObjectType == "objemb" && objectNode.ObjectClass == "Equation.DSMT4")
{
RtfTreeNode resultNode = objectNode.ResultNode;
RtfTreeNode auxNode = null;
if ((auxNode = resultNode.SelectSingleNode("pict")) != null)
{
ImageNode imageNode = new ImageNode(auxNode.ParentNode);
EquationObj equationObj = Wmf2Equation(imageNode);
tree.RootNode.FirstChild.ReplaceChildDeep(n.ParentNode, getReplaceNode());
rtf_replace.Add(equationObj);
}
else
{
MessageBox.Show("'\result' node contains no images!");
}
}
tree.RootNode.FirstChild.RemoveChildDeep(n.ParentNode);
}
return(tree);
}