/**************************************************************************** ** ** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved. ** ** This file is part of the example classes of the Qt Toolkit. ** ** This file may be used under the terms of the GNU General Public ** License versions 2.0 or 3.0 as published by the Free Software ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Alternatively you may (at ** your option) use any later version of the GNU General Public ** License if such license has been publicly approved by Trolltech ASA ** (or its successors, if any) and the KDE Free Qt Foundation. In ** addition, as a special exception, Trolltech gives you certain ** additional rights. These rights are described in the Trolltech GPL ** Exception version 1.2, which can be found at ** http://www.trolltech.com/products/qt/gplexception/ and in the file ** GPL_EXCEPTION.txt in this package. ** ** Please review the following information to ensure GNU General ** Public Licensing requirements will be met: ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If ** you are unsure which license is appropriate for your use, please ** review the following information: ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview ** or contact the sales department at sales@trolltech.com. ** ** In addition, as a special exception, Trolltech, as the sole ** copyright holder for Qt Designer, grants users of the Qt/Eclipse ** Integration plug-in the right for the Qt/Eclipse Integration to ** link to functionality provided by Qt Designer and its related ** libraries. ** ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly ** granted herein. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ #include <QtGui> #include "highlighter.h" //! [0] 00049 Highlighter::Highlighter(QTextDocument *parent) : QSyntaxHighlighter(parent) { HighlightingRule rule; keywordFormat.setForeground(Qt::darkBlue); keywordFormat.setFontWeight(QFont::Bold); QStringList keywordPatterns; keywordPatterns << "\\bchar\\b" << "\\bclass\\b" << "\\bconst\\b" << "\\bdouble\\b" << "\\benum\\b" << "\\bexplicit\\b" << "\\bfriend\\b" << "\\binline\\b" << "\\bint\\b" << "\\blong\\b" << "\\bnamespace\\b" << "\\boperator\\b" << "\\bprivate\\b" << "\\bprotected\\b" << "\\bpublic\\b" << "\\bshort\\b" << "\\bsignals\\b" << "\\bsigned\\b" << "\\bslots\\b" << "\\bstatic\\b" << "\\bstruct\\b" << "\\btemplate\\b" << "\\btypedef\\b" << "\\btypename\\b" << "\\bunion\\b" << "\\bunsigned\\b" << "\\bvirtual\\b" << "\\bvoid\\b" << "\\bvolatile\\b"; foreach (QString pattern, keywordPatterns) { rule.pattern = QRegExp(pattern); rule.format = keywordFormat; highlightingRules.append(rule); //! [0] //! [1] } //! [1] //! [2] classFormat.setFontWeight(QFont::Bold); classFormat.setForeground(Qt::darkMagenta); rule.pattern = QRegExp("\\bQ[A-Za-z]+\\b"); rule.format = classFormat; highlightingRules.append(rule); //! [2] //! [3] singleLineCommentFormat.setForeground(Qt::red); rule.pattern = QRegExp("//[^\n]*"); rule.format = singleLineCommentFormat; highlightingRules.append(rule); multiLineCommentFormat.setForeground(Qt::red); //! [3] //! [4] quotationFormat.setForeground(Qt::darkGreen); rule.pattern = QRegExp("\".*\""); rule.format = quotationFormat; highlightingRules.append(rule); //! [4] //! [5] functionFormat.setFontItalic(true); functionFormat.setForeground(Qt::blue); rule.pattern = QRegExp("\\b[A-Za-z0-9_]+(?=\\()"); rule.format = functionFormat; highlightingRules.append(rule); //! [5] //! [6] commentStartExpression = QRegExp("/\\*"); commentEndExpression = QRegExp("\\*/"); } //! [6] //! [7] 00114 void Highlighter::highlightBlock(const QString &text) { 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); } } //! [7] //! [8] setCurrentBlockState(0); //! [8] //! [9] int startIndex = 0; if (previousBlockState() != 1) startIndex = text.indexOf(commentStartExpression); //! [9] //! [10] while (startIndex >= 0) { //! [10] //! [11] 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); } } //! [11]