#include <qxrdhighlighter.h>

Inheritance diagram for QxrdHighlighter:

Collaboration diagram for QxrdHighlighter:

Classes
struct	HighlightingRule

Public Member Functions
	QxrdHighlighter (QTextDocument *parent=0)

Protected Member Functions
void	highlightBlock (const QString &text)

Private Attributes
QVector< HighlightingRule >	highlightingRules

QRegExp	commentStartExpression

QRegExp	commentEndExpression

QTextCharFormat	keywordFormat

QTextCharFormat	classFormat

QTextCharFormat	singleLineCommentFormat

QTextCharFormat	multiLineCommentFormat

QTextCharFormat	quotationFormat

QTextCharFormat	functionFormat

Detailed Description

Definition at line 10 of file qxrdhighlighter.h.

Constructor & Destructor Documentation

QxrdHighlighter::QxrdHighlighter ( QTextDocument * parent = 0 )

Definition at line 5 of file qxrdhighlighter.cpp.

References classFormat, commentEndExpression, commentStartExpression, QxrdHighlighter::HighlightingRule::format, functionFormat, highlightingRules, keywordFormat, multiLineCommentFormat, QxrdHighlighter::HighlightingRule::pattern, quotationFormat, and singleLineCommentFormat.

   : QSyntaxHighlighter(parent)
 {
     HighlightingRule rule;
 
     keywordFormat.setForeground(Qt::darkBlue);
     keywordFormat.setFontWeight(QFont::Bold);
     QStringList keywordPatterns;
     keywordPatterns << "\\break\\b" << "\\bcase\\b" << "\\bcatch\\b"
                     << "\\bcontinue\\b" << "\\bdefault\\b" << "\\bdelete\\b"
                     << "\\bdo\\b" << "\\belse\\b" << "\\bfinally\\b"
                     << "\\bfor\\b" << "\\bfunction\\b" << "\\bif\\b"
                     << "\\bin\\b" << "\\binstanceof\\b" << "\\bnew\\b"
                     << "\\breturn\\b" << "\\bswitch\\b" << "\\bthis\\b"
                     << "\\bthrow\\b" << "\\btry\\b" << "\\btypeof\\b"
                     << "\\bvar\\b" << "\\btypedef\\b" << "\\btypename\\b"
                     << "\\bunion\\b" << "\\bvoid\\b" << "\\bwhile\\b"
                     << "\\bwith\\b"
                     << "\\babstract\\b" << "\\benum\\b"       << "\\bint\\b"       << "\\bshort\\b"
                     << "\\bboolean\\b"  << "\\bexport\\b"     << "\\binterface\\b" << "\\bstatic\\b"
                     << "\\bbyte\\b"     << "\\bextends\\b"    << "\\blong\\b"      << "\\bsuper\\b"
                     << "\\bchar\\b"     << "\\bfinal\\b"      << "\\bnative\\b"    << "\\bsynchronized\\b"
                     << "\\bclass\\b"    << "\\bfloat\\b"      << "\\bpackage\\b"   << "\\bthrows\\b"
                     << "\\bconst\\b"    << "\\bgoto\\b"       << "\\bprivate\\b"   << "\\btransient\\b"
                     << "\\bdebugger\\b" << "\\bimplements\\b" << "\\bprotected\\b" << "\\bvolatile\\b"
                     << "\\bdouble\\b"   << "\\bimport\\b"     << "\\bpublic\\b";
 
     foreach (QString pattern, keywordPatterns) {
         rule.pattern = QRegExp(pattern);
         rule.format = keywordFormat;
         highlightingRules.append(rule);
     }
 
     classFormat.setFontWeight(QFont::Bold);
     classFormat.setForeground(Qt::darkMagenta);
     rule.pattern = QRegExp("\\bQ[A-Za-z]+\\b");
     rule.format = classFormat;
     highlightingRules.append(rule);
 
     singleLineCommentFormat.setForeground(Qt::red);
     rule.pattern = QRegExp("//[^\n]*");
     rule.format = singleLineCommentFormat;
     highlightingRules.append(rule);
 
     multiLineCommentFormat.setForeground(Qt::red);
 
     quotationFormat.setForeground(Qt::darkGreen);
     rule.pattern = QRegExp("\".*\"");
     rule.format = quotationFormat;
     highlightingRules.append(rule);
 
     functionFormat.setFontItalic(true);
     functionFormat.setForeground(Qt::blue);
     rule.pattern = QRegExp("\\b[A-Za-z0-9_]+(?=\\()");
     rule.format = functionFormat;
     highlightingRules.append(rule);
 
     commentStartExpression = QRegExp("/\\*");
     commentEndExpression = QRegExp("\\*/");
 }

Member Function Documentation

void QxrdHighlighter::highlightBlock ( const QString & text )

protected

Definition at line 66 of file qxrdhighlighter.cpp.

References commentEndExpression, commentStartExpression, QxrdHighlighter::HighlightingRule::format, highlightingRules, multiLineCommentFormat, and QxrdHighlighter::HighlightingRule::pattern.

 {
     foreach (HighlightingRule rule, highlightingRules) {
         QRegExp expression(rule.pattern);
         int index = text.indexOf(expression);
         while (index >= 0) {
             int length = expression.matchedLength();
             setFormat(index, length, rule.format);
             index = text.indexOf(expression, index + length);
         }
     }
     setCurrentBlockState(0);
 
     int startIndex = 0;
     if (previousBlockState() != 1)
         startIndex = text.indexOf(commentStartExpression);
 
     while (startIndex >= 0) {
         int endIndex = text.indexOf(commentEndExpression, startIndex);
         int commentLength;
         if (endIndex == -1) {
             setCurrentBlockState(1);
             commentLength = text.length() - startIndex;
         } else {
             commentLength = endIndex - startIndex
                             + commentEndExpression.matchedLength();
         }
         setFormat(startIndex, commentLength, multiLineCommentFormat);
         startIndex = text.indexOf(commentStartExpression,
                                                 startIndex + commentLength);
     }
 }