void Parse(XmlElement mathNodeElem, MathNode parentNode)
{
//this is a single math node
foreach (XmlAttribute att in mathNodeElem.Attributes)
{
parentNode.AddAttribute(att.Name, att.Value);
}
foreach (XmlNode node in mathNodeElem)
{
switch (node.NodeType)
{
case XmlNodeType.Comment:
//nothing
break;
case XmlNodeType.Text:
{
//text content inside parent node
XmlText textnode = (XmlText)node;
string value = textnode.Value.Trim();
if (value.Length > 0)
{
parentNode.Text = value;
}
}
break;
case XmlNodeType.Element:
{
//create dom from each node type
XmlElement elem = (XmlElement)node;
MathNode newNode = _defStore.CreateMathNode(elem);
parentNode.AppendChild(newNode);
//inside this elem may has child
//parse node inside this
Parse(elem, newNode);
}
break;
}
}
}
public virtual void AppendChild(MathNode node)
{
_children.Add(node);
}
public static object UnsafeGetController(MathNode elem) => elem._controller;
Box CreateMathBox(MathNode node)
{
//create box foreach node
//TODO: most box are glyph box + its text content
//except some boxes are Horizontal (eg. mrow) or some box are vertical (...)
//this should be config from DomSpec.xml or Autogen code
Box result = null;
switch (node.Name)
{
default:
{
//text span box
if (node.Text == null)
{
return(null);
}
char[] text_buff = node.Text.ToCharArray();
if (text_buff.Length == 0)
{
//????
return(null);
}
else if (text_buff.Length > 1)
{
HorizontalStackBox textSpan = new HorizontalStackBox();
textSpan.MathNode = node;
for (int i = 0; i < text_buff.Length; ++i)
{
GlyphBox glyphBox = NewGlyphBox();
glyphBox.Character = text_buff[i];
textSpan.AddChild(glyphBox);
}
//return textSpan;
result = textSpan;
}
else
{
//len=1
GlyphBox glyphBox = NewGlyphBox();
glyphBox.MathNode = node;
glyphBox.Character = text_buff[0];
//return glyphBox;
result = glyphBox;
}
}
break;
case "math":
case "mrow":
case "msub":
case "msup":
{
HorizontalStackBox hbox = new HorizontalStackBox();
hbox.MathNode = node;
//
int child_count = node.ChildCount;
for (int i = 0; i < child_count; ++i)
{
Box childBox = CreateMathBox(node.GetNode(i));
if (childBox != null)
{
hbox.AddChild(childBox);
}
}
//return hbox;
result = hbox;
}
break;
case "mfrac":
case "munder":
{
VerticalStackBox vbox = new VerticalStackBox();
vbox.MathNode = node;
int child_count = node.ChildCount;
for (int i = 0; i < child_count; ++i)
{
Box childBox = CreateMathBox(node.GetNode(i));
if (childBox != null)
{
vbox.AddChild(childBox);
}
}
//return hbox;
result = vbox;
}
break;
case "mover":
{
VerticalStackBox vbox = new VerticalStackBox();
vbox.MathNode = node;
int child_count = node.ChildCount;
if (child_count != 2) //expect 2
{
return(null);
}
Box baseBox = CreateMathBox(node.GetNode(0));
Box overBox = CreateMathBox(node.GetNode(1));
vbox.AddChild(overBox);
vbox.AddChild(baseBox);
//return hbox;
result = vbox;
}
break;
}
if (result != null)
{
AssignGlyphVxs(result);
}
return(result);
}