private Atom ConvertCharacter(TexFormula formula, string value, ref int position, char character)
{
position++;
var font = TexUtility.RenderFont == -2 ? TexUtility.RawRenderFont : TexUtility.RenderFont;
if (font == -1 && IsSymbol(character))
{
// Character is symbol (and math).
var charIdx = TEXPreference.main.charMapData[character, -1];
if (charIdx >= 0)
{
return(SymbolAtom.Get(TEXPreference.main.GetChar(charIdx), character));
}
return(UnicodeAtom.Get(TEXConfiguration.main.Typeface_Unicode, character));
}
else
{
// Character is alpha-numeric.
if (font >= 0 && !TEXPreference.main.IsCharAvailable(font, character))
{
return(UnicodeAtom.Get(font, character));
}
return(CharAtom.Get(character));
}
}
private Atom ConvertCharacter(string value, ref int position, char character)
{
position++;
var font = TexContext.Font.value;
if (font == -1)
{
// Character is symbol (and math).
var charIdx = TEXPreference.main.charmaps[character, -1];
if (charIdx >= 0)
{
return(SymbolAtom.Get(TEXPreference.main.GetChar(charIdx), character));
}
else
{
return(CharAtom.Get(character, -1));
}
}
else
{
return(CharAtom.Get(character, font));
}
}
private void ProcessEscapeSequence(TexFormula formula, string value, ref int position)
{
position++;
var command = LookForAWord(value, ref position);
// Check if there's no command
if (command.Length == 0)
{
if (position < value.Length)
{
var nextChar = value[position];
if (IsParserReserved(nextChar))
{
formula.Add(ConvertCharacter(value, ref position, nextChar));
}
}
return;
}
//Check if the command registered in Commands
if (isCommandRegistered(command))
{
formula.Add(AttachScripts(formula, value, ref position,
ProcessCommand(formula, value, ref position, command)));
return;
}
//Check if the command registered in FontID
var fontID = TEXPreference.main.GetFontIndexByID(command);
if (fontID != -1)
{
SkipWhiteSpace(value, ref position);
formula.Add(ParseFontStyle(value, ref position, fontID,
ParseFontStyle(ReadInsideBracket(value, ref position))));
return;
}
SymbolAtom symbolAtom = SymbolAtom.GetAtom(command);
//Check if the command registered in Symbol database
if (symbolAtom != null)
{
// Symbol was found.
if (symbolAtom.RightType == CharType.Accent && formula.RootAtom != null)
{
//Accent is Found
Atom baseAtom = formula.RootAtom;
if (baseAtom is RowAtom)
{
var row = (RowAtom)baseAtom;
baseAtom = MatrixAtom.Last(row.Elements);
row.Elements.RemoveAt(row.Elements.Count - 1);
}
else
{
formula.RootAtom = null;
}
formula.Add(AttachScripts(formula, value, ref position, AccentedAtom.Get(baseAtom, symbolAtom)));
}
else
{
formula.Add(AttachScripts(formula, value, ref position, symbolAtom));
}
return;
}
//No lucks, now ...
{
// Command aren't defined, use it as command text style
RowAtom row = RowAtom.Get();
for (int i = 0; i < command.Length; i++)
{
var charAtom = CharAtom.Get(command[i],
TEXConfiguration.main.Typeface_Commands);
row.Add(charAtom);
}
formula.Add(AttachScripts(formula, value, ref position, row));
}
}