Qt 4.0: highlighter.h Example File (richtext/syntaxhighlighter/highlighter.h)

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# highlighter.h Example File
richtext/syntaxhighlighter/highlighter.h

        /****************************************************************************
        **
        ** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
        ** This file may be used under the terms of the GNU General Public
    ** License version 2.0 as published by the Free Software Foundation
    ** and appearing in the file LICENSE.GPL included in the packaging of
    ** this file.  Please review the following information to ensure GNU
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    ** http://www.trolltech.com/products/qt/opensource.html
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    ** review the following information:
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        #ifndef HIGHLIGHTER_H
        #define HIGHLIGHTER_H

        #include <QHash>
        #include <QString>
        #include <QStringList>
        #include <QTextBlock>
        #include <QTextCharFormat>

        class QTextDocument;

        class Highlighter : public QObject
        {
            Q_OBJECT
        public:
            Highlighter(QObject *parent = 0);

            void addToDocument(QTextDocument *doc);
            void addMapping(const QString &pattern, const QTextCharFormat &format);

        private slots:
            void highlight(int from, int removed, int added);

        private:
            void highlightBlock(QTextBlock block);

            QHash<QString,QTextCharFormat> mappings;
        };

        #endif