myhighlighter.cpp

#include "myhighlighter.h"

myHighlighter :: myHighlighter(QTextDocument *parent)
    :QSyntaxHighlighter(parent){}

void  myHighlighter::highlightBlock(const QString &text){
    QTextCharFormat myClassFormat;
       myClassFormat.setFontWeight(QFont::Bold);
       myClassFormat.setForeground(Qt::red);

       QRegExp startExpression("{{");
       QRegExp endExpression("}}");
       setCurrentBlockState(0);

       int startIndex = 0;
       if (previousBlockState() != 1)
           startIndex = text.indexOf(startExpression);

       while (startIndex >= 0) {
          int endIndex = text.indexOf(endExpression, startIndex);
          int commentLength;
          if (endIndex == -1) {
              setCurrentBlockState(1);
              commentLength = text.length() - startIndex;
          } else {
              commentLength = endIndex - startIndex
                              + endExpression.matchedLength();
          }
          setFormat(startIndex, commentLength, myClassFormat);
          startIndex = text.indexOf(startExpression,
                                    startIndex + commentLength);
       }
}