highlighter.cpp
author insilmaril
Wed, 11 Apr 2007 09:21:16 +0000
changeset 455 1462e380b82b
parent 447 72afe12da1c8
child 471 9c26d66d4c53
permissions -rw-r--r--
Updated documentation about macros
     1 /****************************************************************************
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     3 ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
     4 **
     5 ** This file is part of the example classes of the Qt Toolkit.
     6 **
     7 ** This file may be used under the terms of the GNU General Public
     8 ** License version 2.0 as published by the Free Software Foundation
     9 ** and appearing in the file LICENSE.GPL included in the packaging of
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    17 ** sales department at sales@trolltech.com.
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    20 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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    23 
    24 // highlighting rules have been adapted by Uwe Drechsel to match vym syntax
    25 
    26 
    27 #include <QtGui>
    28 
    29 #include "highlighter.h"
    30 
    31 Highlighter::Highlighter(QTextDocument *parent)
    32     : QSyntaxHighlighter(parent)
    33 {
    34     HighlightingRule rule;
    35 
    36     keywordFormat.setForeground(Qt::darkBlue);
    37     keywordFormat.setFontWeight(QFont::Bold);
    38     QStringList keywordPatterns;
    39     keywordPatterns << "\\baddBranch\\b" 
    40 					<< "\\baddBranchBefore\\b" 
    41                     << "\\baddMapInsert\\b" 
    42 					<< "\\baddMapReplace\\b"
    43                     << "\\bcolorBranch\\b" 
    44 					<< "\\bcolorSubtree\\b"
    45                     << "\\bcut\\b" 
    46 					<< "\\bdelete\\b" 
    47 					<< "\\bdeletepKeepChilds\\b" 
    48 					<< "\\bdeletepChilds\\b"
    49 					<< "\\blinkTo\\b" 
    50 					<< "\\bloadImage\\b"
    51 					<< "\\bmoveBranchUp\\b" 
    52 					<< "\\bmoveBranchDown\\b"
    53 					<< "\\bmove\\b" 
    54 					<< "\\bmoveRel\\b"
    55 					<< "\\bpaste\\b" 
    56 					<< "\\bsaveImage\\b" 
    57 					<< "\\bscroll\\b" 
    58 					<< "\\bselect\\b" 
    59 					<< "\\bselectLastBranch\\b" 
    60 					<< "\\bselectLastImage\\b"
    61 					<< "\\bsetMapAuthor\\b" 
    62 					<< "\\bsetMapComment\\b" 
    63 					<< "\\bsetMapBackgroundColor\\b" 
    64 					<< "\\bsetMapDefLinkColor\\b" 
    65 					<< "\\bsetMapDefLinkStyle\\b" 
    66 					<< "\\bsetHeading\\b" 
    67 					<< "\\bsetHideExport\\b" 
    68 					<< "\\bsetIncludeImagesHorizontally\\b" 
    69 					<< "\\bsetIncludeImagesVertically\\b" 
    70 					<< "\\bsetURL\\b" 
    71 					<< "\\bsetVymLink\\b" 
    72 					<< "\\bsetFlag\\b" 
    73 					<< "\\btoggleFlag\\b" 
    74 					<< "\\bunscroll\\b" 
    75 					<< "\\bunsetFlag\\b" 
    76 					;
    77     foreach (QString pattern, keywordPatterns) {
    78         rule.pattern = QRegExp(pattern);
    79         rule.format = keywordFormat;
    80         highlightingRules.append(rule);
    81     }
    82 
    83 	// QT keywords
    84 	/*
    85     classFormat.setFontWeight(QFont::Bold);
    86     classFormat.setForeground(Qt::darkMagenta);
    87     rule.pattern = QRegExp("\\bQ[A-Za-z]+\\b");
    88     rule.format = classFormat;
    89     highlightingRules.append(rule);
    90 	*/
    91 
    92 	// Single line comments
    93     singleLineCommentFormat.setForeground(Qt::red);
    94     rule.pattern = QRegExp("#[^\n]*");
    95     rule.format = singleLineCommentFormat;
    96     highlightingRules.append(rule);
    97 
    98 	// multiline comments
    99     multiLineCommentFormat.setForeground(Qt::red);
   100     commentStartExpression = QRegExp("/\\*");
   101     commentEndExpression = QRegExp("\\*/");
   102 
   103 	// Quotations
   104     quotationFormat.setForeground(Qt::darkGreen);
   105     rule.pattern = QRegExp("\".*\"");
   106     rule.format = quotationFormat;
   107     highlightingRules.append(rule);
   108 
   109     QStringList valuePatterns;
   110     valuePatterns << "\\btrue\\b" << "\\bfalse\\b";
   111     foreach (QString pattern, valuePatterns) {
   112         rule.pattern = QRegExp(pattern);
   113         rule.format = quotationFormat;
   114         highlightingRules.append(rule);
   115     }
   116 
   117 
   118 
   119 	// Funtions
   120 	/*
   121     functionFormat.setFontItalic(true);
   122     functionFormat.setForeground(Qt::blue);
   123     rule.pattern = QRegExp("\\b[A-Za-z0-9_]+(?=\\()");
   124     rule.format = functionFormat;
   125     highlightingRules.append(rule);
   126 	*/
   127 
   128 }
   129 
   130 void Highlighter::highlightBlock(const QString &text)
   131 {
   132     foreach (HighlightingRule rule, highlightingRules) {
   133         QRegExp expression(rule.pattern);
   134         int index = text.indexOf(expression);
   135         while (index >= 0) {
   136             int length = expression.matchedLength();
   137             setFormat(index, length, rule.format);
   138             index = text.indexOf(expression, index + length);
   139         }
   140     }
   141     setCurrentBlockState(0);
   142 
   143     int startIndex = 0;
   144     if (previousBlockState() != 1)
   145         startIndex = text.indexOf(commentStartExpression);
   146 
   147     while (startIndex >= 0) {
   148         int endIndex = text.indexOf(commentEndExpression, startIndex);
   149         int commentLength;
   150         if (endIndex == -1) {
   151             setCurrentBlockState(1);
   152             commentLength = text.length() - startIndex;
   153         } else {
   154             commentLength = endIndex - startIndex
   155                             + commentEndExpression.matchedLength();
   156         }
   157         setFormat(startIndex, commentLength, multiLineCommentFormat);
   158         startIndex = text.indexOf(commentStartExpression,
   159                                                 startIndex + commentLength);
   160     }
   161 }