/// <summary>
/// Create a XmlElement. This is typically called by the base class when creating a DOM tree
/// </summary>
/// <param name="prefix"></param>
/// <param name="localname"></param>
/// <param name="nsURI"></param>
/// <returns></returns>
public override XmlElement CreateElement(string prefix, string localname, string nsURI)
{
XmlElement result = null;
switch (localname)
{
case "math":
result = new MathMLMathElement(prefix, localname, nsURI, this);
break;
case "mi":
case "mn":
case "mtext":
result = new MathMLPresentationToken(prefix, localname, nsURI, this);
break;
case "mo":
result = new MathMLOperatorElement(prefix, localname, nsURI, this);
break;
case "mspace":
result = new MathMLSpaceElement(prefix, localname, nsURI, this);
break;
case "ms":
result = new MathMLStringLitElement(prefix, localname, nsURI, this);
break;
case "mglyph":
result = new MathMLGlyphElement(prefix, localname, nsURI, this);
break;
case "mrow":
case "merror":
case "mphantom":
result = new MathMLPresentationContainer(prefix, localname, nsURI, this);
break;
case "mfrac":
result = new MathMLFractionElement(prefix, localname, nsURI, this);
break;
case "msqrt":
case "mroot":
result = new MathMLRadicalElement(prefix, localname, nsURI, this);
break;
case "mstyle":
result = new MathMLStyleElement(prefix, localname, nsURI, this);
break;
case "mpadded":
result = new MathMLPaddedElement(prefix, localname, nsURI, this);
break;
case "mfenced":
result = new MathMLFencedElement(prefix, localname, nsURI, this);
break;
case "menclose":
result = new MathMLEncloseElement(prefix, localname, nsURI, this);
break;
case "msub":
case "msup":
case "msubsup":
result = new MathMLScriptElement(prefix, localname, nsURI, this);
break;
case "munder":
case "mover":
case "munderover":
result = new MathMLUnderOverElement(prefix, localname, nsURI, this);
break;
case "mmultiscripts":
result = new MathMLMultiScriptsElement(prefix, localname, nsURI, this);
break;
case "mtable":
result = new MathMLTableElement(prefix, localname, nsURI, this);
break;
case "mlabeledtr":
result = new MathMLLabeledRowElement(prefix, localname, nsURI, this);
break;
case "mtr":
result = new MathMLTableRowElement(prefix, localname, nsURI, this);
break;
case "mtd":
result = new MathMLTableCellElement(prefix, localname, nsURI, this);
break;
case "maligngroup":
result = new MathMLAlignGroupElement(prefix, localname, nsURI, this);
break;
case "malignmark":
result = new MathMLAlignMarkElement(prefix, localname, nsURI, this);
break;
case "maction":
result = new MathMLActionElement(prefix, localname, nsURI, this);
break;
case "cn":
result = new MathMLCnElement(prefix, localname, nsURI, this);
break;
case "ci":
result = new MathMLCiElement(prefix, localname, nsURI, this);
break;
case "csymbol":
result = new MathMLCsymbolElement(prefix, localname, nsURI, this);
break;
case "apply":
result = new MathMLApplyElement(prefix, localname, nsURI, this);
break;
case "fn":
result = new MathMLFnElement(prefix, localname, nsURI, this);
break;
case "interval":
result = new MathMLIntervalElement(prefix, localname, nsURI, this);
break;
case "inverse":
case "compose":
case "ident":
case "domain":
case "codomain":
case "image":
case "quotient":
case "exp":
case "factorial":
case "divide":
case "max":
case "min":
case "minus":
case "plus":
case "power":
case "rem":
case "times":
case "root":
case "gcd":
case "and":
case "or":
case "xor":
case "not":
case "implies":
case "forall":
case "exists":
case "abs":
case "conjugate":
case "arg":
case "real":
case "imaginary":
case "lcm":
case "floor":
case "ceiling":
case "eq":
case "neq":
case "gt":
case "lt":
case "geq":
case "leq":
case "equivalent":
case "approx":
case "factorof":
case "int":
case "diff":
case "partialdiff":
case "divergence":
case "grad":
case "curl":
case "laplacian":
case "union":
case "intersect":
case "in":
case "notin":
case "subset":
case "prsubset":
case "notsubset":
case "notprsubset":
case "setdiff":
case "card":
case "cartesianproduct":
case "sum":
case "product":
case "limit":
case "tendsto":
case "ln":
case "log":
case "sin":
case "cos":
case "tan":
case "sec":
case "csc":
case "cot":
case "sinh":
case "cosh":
case "tanh":
case "sech":
case "csch":
case "coth":
case "arcsin":
case "arccos":
case "arctan":
case "arccosh":
case "arccot":
case "arccoth":
case "arccsc":
case "arccsch":
case "arcsec":
case "arcsech":
case "arcsinh":
case "arctanh":
case "mean":
case "sdev":
case "variance":
case "median":
case "mode":
case "moment":
case "determinant":
case "transpose":
case "selector":
case "vectorproduct":
case "scalarproduct":
case "outerproduct":
case "integers":
case "reals":
case "rationals":
case "naturalnumbers":
case "complexes":
case "primes":
case "exponentiale":
case "imaginaryi":
case "notanumber":
case "true":
case "false":
case "emptyset":
case "pi":
case "eulergamma":
case "infinity":
result = new MathMLPredefinedSymbol(prefix, localname, nsURI, this);
break;
case "condition":
result = new MathMLConditionElement(prefix, localname, nsURI, this);
break;
case "declare":
result = new MathMLDeclareElement(prefix, localname, nsURI, this);
break;
case "lambda":
result = new MathMLLambdaElement(prefix, localname, nsURI, this);
break;
case "piecewise":
result = new MathMLPiecewiseElement(prefix, localname, nsURI, this);
break;
case "piecev":
result = new MathMLCaseElement(prefix, localname, nsURI, this);
break;
case "reln":
case "domainofapplication":
case "otherwise":
case "lowlimit":
case "uplimit":
case "degree":
case "momentabout":
case "logbase": // TODO is this correct, 'logbase' not specified in mathml docs????
result = new MathMLContentContainer(prefix, localname, nsURI, this);
break;
case "bvar":
result = new MathMLBvarElement(prefix, localname, nsURI, this);
break;
case "set":
result = new MathMLSetElement(prefix, localname, nsURI, this);
break;
case "list":
result = new MathMLListElement(prefix, localname, nsURI, this);
break;
case "vector":
result = new MathMLVectorElement(prefix, localname, nsURI, this);
break;
case "matrix":
result = new MathMLMatrixElement(prefix, localname, nsURI, this);
break;
case "matrixrow":
result = new MathMLMatrixRowElement(prefix, localname, nsURI, this);
break;
case "annotation":
result = new MathMLAnnotationElement(prefix, localname, nsURI, this);
break;
case "semantics":
result = new MathMLSemanticsElement(prefix, localname, nsURI, this);
break;
case "annotation-xml":
result = new MathMLXMLAnnotationElement(prefix, localname, nsURI, this);
break;
case "sep":
result = new MathMLSeparator(prefix, localname, nsURI, this);
break;
case "placeholder":
result = new MathMLPlaceholderElement(prefix, localname, nsURI, this);
break;
default:
result = base.CreateElement(prefix, localname, nsURI);
break;
}
return(result);
}
/// <summary>
/// set the foreground and background colors for an area derived from a
/// token area. This takes a formatted area tree, and if a color exists
/// for a token, this color is set to the area subtree, same for background
/// color.
/// </summary>
private static Area Colorize(MathMLPresentationToken e, Area a)
{
Color color = e.MathColor;
Color backColor = e.MathBackground;
// make sure we only colorize outermost area
if(!color.IsEmpty && !backColor.IsEmpty)
{
a = AreaFactory.Color(color, a);
a = AreaFactory.Background(backColor, a);
}
else if(!color.IsEmpty)
{
a = AreaFactory.Color(color, a);
}
else if(!backColor.IsEmpty)
{
a = AreaFactory.Background(backColor, a);
}
return a;
}
/// <summary>
/// Create a XmlElement. This is typically called by the base class when creating a DOM tree
/// </summary>
/// <param name="prefix"></param>
/// <param name="localname"></param>
/// <param name="nsURI"></param>
/// <returns></returns>
public override XmlElement CreateElement(string prefix, string localname, string nsURI)
{
XmlElement result = null;
switch(localname)
{
case "math":
result = new MathMLMathElement(prefix, localname, nsURI, this);
break;
case "mi":
case "mn":
case "mtext":
result = new MathMLPresentationToken(prefix, localname, nsURI, this);
break;
case "mo":
result = new MathMLOperatorElement(prefix, localname, nsURI, this);
break;
case "mspace":
result = new MathMLSpaceElement(prefix, localname, nsURI, this);
break;
case "ms":
result = new MathMLStringLitElement(prefix, localname, nsURI, this);
break;
case "mglyph":
result = new MathMLGlyphElement(prefix, localname, nsURI, this);
break;
case "mrow":
case "merror":
case "mphantom":
result = new MathMLPresentationContainer(prefix, localname, nsURI, this);
break;
case "mfrac":
result = new MathMLFractionElement(prefix, localname, nsURI, this);
break;
case "msqrt":
case "mroot":
result = new MathMLRadicalElement(prefix, localname, nsURI, this);
break;
case "mstyle":
result = new MathMLStyleElement(prefix, localname, nsURI, this);
break;
case "mpadded":
result = new MathMLPaddedElement(prefix, localname, nsURI, this);
break;
case "mfenced":
result = new MathMLFencedElement(prefix, localname, nsURI, this);
break;
case "menclose":
result = new MathMLEncloseElement(prefix, localname, nsURI, this);
break;
case "msub":
case "msup":
case "msubsup":
result = new MathMLScriptElement(prefix, localname, nsURI, this);
break;
case "munder":
case "mover":
case "munderover":
result = new MathMLUnderOverElement(prefix, localname, nsURI, this);
break;
case "mmultiscripts":
result = new MathMLMultiScriptsElement(prefix, localname, nsURI, this);
break;
case "mtable":
result = new MathMLTableElement(prefix, localname, nsURI, this);
break;
case "mlabeledtr":
result = new MathMLLabeledRowElement(prefix, localname, nsURI, this);
break;
case "mtr":
result = new MathMLTableRowElement(prefix, localname, nsURI, this);
break;
case "mtd":
result = new MathMLTableCellElement(prefix, localname, nsURI, this);
break;
case "maligngroup":
result = new MathMLAlignGroupElement(prefix, localname, nsURI, this);
break;
case "malignmark":
result = new MathMLAlignMarkElement(prefix, localname, nsURI, this);
break;
case "maction":
result = new MathMLActionElement(prefix, localname, nsURI, this);
break;
case "cn":
result = new MathMLCnElement(prefix, localname, nsURI, this);
break;
case "ci":
result = new MathMLCiElement(prefix, localname, nsURI, this);
break;
case "csymbol":
result = new MathMLCsymbolElement(prefix, localname, nsURI, this);
break;
case "apply":
result = new MathMLApplyElement(prefix, localname, nsURI, this);
break;
case "fn":
result = new MathMLFnElement(prefix, localname, nsURI, this);
break;
case "interval":
result = new MathMLIntervalElement(prefix, localname, nsURI, this);
break;
case "inverse":
case "compose":
case "ident":
case "domain":
case "codomain":
case "image":
case "quotient":
case "exp":
case "factorial":
case "divide":
case "max":
case "min":
case "minus":
case "plus":
case "power":
case "rem":
case "times":
case "root":
case "gcd":
case "and":
case "or":
case "xor":
case "not":
case "implies":
case "forall":
case "exists":
case "abs":
case "conjugate":
case "arg":
case "real":
case "imaginary":
case "lcm":
case "floor":
case "ceiling":
case "eq":
case "neq":
case "gt":
case "lt":
case "geq":
case "leq":
case "equivalent":
case "approx":
case "factorof":
case "int":
case "diff":
case "partialdiff":
case "divergence":
case "grad":
case "curl":
case "laplacian":
case "union":
case "intersect":
case "in":
case "notin":
case "subset":
case "prsubset":
case "notsubset":
case "notprsubset":
case "setdiff":
case "card":
case "cartesianproduct":
case "sum":
case "product":
case "limit":
case "tendsto":
case "ln":
case "log":
case "sin":
case "cos":
case "tan":
case "sec":
case "csc":
case "cot":
case "sinh":
case "cosh":
case "tanh":
case "sech":
case "csch":
case "coth":
case "arcsin":
case "arccos":
case "arctan":
case "arccosh":
case "arccot":
case "arccoth":
case "arccsc":
case "arccsch":
case "arcsec":
case "arcsech":
case "arcsinh":
case "arctanh":
case "mean":
case "sdev":
case "variance":
case "median":
case "mode":
case "moment":
case "determinant":
case "transpose":
case "selector":
case "vectorproduct":
case "scalarproduct":
case "outerproduct":
case "integers":
case "reals":
case "rationals":
case "naturalnumbers":
case "complexes":
case "primes":
case "exponentiale":
case "imaginaryi":
case "notanumber":
case "true":
case "false":
case "emptyset":
case "pi":
case "eulergamma":
case "infinity":
result = new MathMLPredefinedSymbol(prefix, localname, nsURI, this);
break;
case "condition":
result = new MathMLConditionElement(prefix, localname, nsURI, this);
break;
case "declare":
result = new MathMLDeclareElement(prefix, localname, nsURI, this);
break;
case "lambda":
result = new MathMLLambdaElement(prefix, localname, nsURI, this);
break;
case "piecewise":
result = new MathMLPiecewiseElement(prefix, localname, nsURI, this);
break;
case "piecev":
result = new MathMLCaseElement(prefix, localname, nsURI, this);
break;
case "reln":
case "domainofapplication":
case "otherwise":
case "lowlimit":
case "uplimit":
case "degree":
case "momentabout":
case "logbase": // TODO is this correct, 'logbase' not specified in mathml docs????
result = new MathMLContentContainer(prefix, localname, nsURI, this);
break;
case "bvar":
result = new MathMLBvarElement(prefix, localname, nsURI, this);
break;
case "set":
result = new MathMLSetElement(prefix, localname, nsURI, this);
break;
case "list":
result = new MathMLListElement(prefix, localname, nsURI, this);
break;
case "vector":
result = new MathMLVectorElement(prefix, localname, nsURI, this);
break;
case "matrix":
result = new MathMLMatrixElement(prefix, localname, nsURI, this);
break;
case "matrixrow":
result = new MathMLMatrixRowElement(prefix, localname, nsURI, this);
break;
case "annotation":
result = new MathMLAnnotationElement(prefix, localname, nsURI, this);
break;
case "semantics":
result = new MathMLSemanticsElement(prefix, localname, nsURI, this);
break;
case "annotation-xml":
result = new MathMLXMLAnnotationElement(prefix, localname, nsURI, this);
break;
case "sep":
result = new MathMLSeparator(prefix, localname, nsURI, this);
break;
case "placeholder":
result = new MathMLPlaceholderElement(prefix, localname, nsURI, this);
break;
default:
result = base.CreateElement(prefix, localname, nsURI);
break;
}
return result;
}
/// <summary>
/// process a presentation token. This can be either a "mi",
/// "mn", or "mtext" element. These nodes can only have content
/// of text or glyph nodes. This method process all of the child
/// nodes of the element, verifies that they are indeed text nodes,
/// or glyph elements, and depending on the content, creates either
/// an array of glyphs in a horizontal array if the content is text
/// nodes interspersed with glyph elements, or a string element
/// if the content is a single text node
/// </summary>
public object Visit(MathMLPresentationToken e, object args)
{
Area cache = Area.GetArea(e);
if(cache != null) return cache;
Area area = null;
// make an updated context
IFormattingContext context = ((IFormattingContext)args).Clone();
XmlNode node = null;
MathMLElement element = null;
MathMLNodeList contents = e.Contents;
// update the font size, pres-tokens can specify font size
context.Size = context.Evaluate(e.MathSize);
MathVariant variant = e.MathVariant;
if(variant != MathVariant.Unknown)
{
context.MathVariant = variant;
}
if(contents.Count == 1) // create a single string area
{
if((node = e.FirstChild) != null && node.NodeType == XmlNodeType.Text)
{
area = AreaFactory.String(context, node.Value);
}
else if((element = e.FirstChild as MathMLElement) != null)
{
// sets area to a new glyph area
area = (Area)element.Accept(this, context);
}
else
{
// TODO this is bad, need error handler
}
}
else // create a sequence of areas
{
Area[] areas = new Area[contents.Count];
int i = 0;
foreach(XmlNode n in contents)
{
if(n.NodeType == XmlNodeType.Text)
{
area = AreaFactory.String(context, n.Value);
}
else if((element = n as MathMLElement) != null)
{
area = (Area)element.Accept(this, context);
}
areas[i++] = area;
}
area = AreaFactory.Horizontal(areas);
}
return CompleteArea((IFormattingContext)args, e, Colorize(e, area));
}