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highLighter.cc
1 /*===========================================================================*\
2 * *
3 * OpenFlipper *
4 * Copyright (c) 2001-2015, RWTH-Aachen University *
5 * Department of Computer Graphics and Multimedia *
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40 \*===========================================================================*/
41
42 /*===========================================================================*\
43 * *
44 * $Revision$ *
45 * $LastChangedBy$ *
46 * $Date$ *
47 * *
48 \*===========================================================================*/
49
50 #if QT_VERSION >= 0x050000
51 #include <QtWidgets>
52 #else
53 #include <QtGui>
54 #endif
55
56
57 #include "highLighter.hh"
58
59 Highlighter::Highlighter(QTextDocument *parent)
60 : QSyntaxHighlighter(parent)
61 {
62 init();
63 }
64
65 Highlighter::Highlighter(QTextEdit *parent)
66 : QSyntaxHighlighter(parent)
67 {
68 init();
69 }
70
71 void Highlighter::init() {
72 // Set the basic format styles
73 keywordFormat_.setForeground(Qt::darkGreen);
74 keywordFormat_.setFontWeight(QFont::Bold);
75
76 pluginFormat_.setForeground(Qt::darkBlue);
77 pluginFormat_.setFontWeight(QFont::Bold);
78
79 functionFormat_.setForeground(Qt::darkYellow);
80 functionFormat_.setFontWeight(QFont::Bold);
81
82 typeFormat_.setForeground(Qt::darkMagenta);
83 typeFormat_.setFontWeight(QFont::Bold);
84
85 quotationFormat_.setForeground(Qt::darkRed);
86
87 listFormat_.setForeground(Qt::darkRed);
88
89 singleLineCommentFormat_.setForeground(Qt::red);
90 multiLineCommentFormat_.setForeground(Qt::red);
91
92 commentStartExpression_ = QRegExp("/\\*");
93 commentEndExpression_ = QRegExp("\\*/");
94
95 // Define basic keywords
96 keywordPatterns_ << "while" << "for" << "print" << "var" << "break" << "if";
97
98 // Types which are accepted by the scripting system
99 typePatterns_ << "int" << "Matrix4x4" << "QString" << "idList" << "bool" << "Vector" << "double";
100
101 update();
102
103 // classFormat.setFontWeight(QFont::Bold);
104 // classFormat.setForeground(Qt::darkMagenta);
105 // rule.pattern = QRegExp("\\bQ[A-Za-z]+\\b");
106 // rule.format = classFormat;
107 // highlightingRules.append(rule);
108 //
109
110
111
112 // functionFormat.setFontItalic(true);
113 // functionFormat.setForeground(Qt::blue);
114 // rule.pattern = QRegExp("\\b[A-Za-z0-9_]+(?=\\()");
115 // rule.format = functionFormat;
116 // highlightingRules.append(rule);
117 //
118 }
119
120 void Highlighter::update() {
121
122 highlightingRules_.clear();
123
124 HighlightingRule rule;
125
126 // Create Rules for keywords
127 foreach (QString pattern, keywordPatterns_) {
128 rule.pattern = QRegExp("\\b" + pattern + "\\b" );
129 rule.format = keywordFormat_;
130 highlightingRules_.append(rule);
131 }
132
133 // Create Rules for plugins
134 foreach (QString pattern, pluginPatterns_ ) {
135 rule.pattern = QRegExp("\\b" + pattern + "\\b" );
136 rule.format = pluginFormat_;
137 highlightingRules_.append(rule);
138 }
139
140 // Create Rules for functions
141 foreach (QString pattern, functionPatterns_ ) {
142 rule.pattern = QRegExp("\\b" + pattern + "\\b" );
143 rule.format = functionFormat_;
144 highlightingRules_.append(rule);
145 }
146
147 // Create Rules for types
148 foreach (QString pattern, typePatterns_ ) {
149 rule.pattern = QRegExp("\\b" + pattern + "\\b" );
150 rule.format = typeFormat_;
151 highlightingRules_.append(rule);
152 }
153
154 // Rule for single line comments
155 rule.pattern = QRegExp("//[^\n]*");
156 rule.format = singleLineCommentFormat_;
157 highlightingRules_.append(rule);
158
159 // Rules for quotations
160 rule.pattern = QRegExp("\".*\"");
161 rule.format = quotationFormat_;
162 highlightingRules_.append(rule);
163
164 // Rules for Lists
165 rule.pattern = QRegExp("\\[.*\\]");
166 rule.format = listFormat_;
167 highlightingRules_.append(rule);
168
169 }
170
171 void Highlighter::highlightBlock(const QString &text)
172 {
173
174 foreach (HighlightingRule rule, highlightingRules_) {
175 QRegExp expression(rule.pattern);
176 int index = text.indexOf(expression);
177 while (index >= 0) {
178 int length = expression.matchedLength();
179 setFormat(index, length, rule.format);
180 index = text.indexOf(expression, index + length);
181 }
182 }
183 setCurrentBlockState(0);
184
185 int startIndex = 0;
186 if (previousBlockState() != 1)
187 startIndex = text.indexOf(commentStartExpression_);
188
189 while (startIndex >= 0) {
190 int endIndex = text.indexOf(commentEndExpression_, startIndex);
191 int commentLength;
192 if (endIndex == -1) {
193 setCurrentBlockState(1);
194 commentLength = text.length() - startIndex;
195 } else {
196 commentLength = endIndex - startIndex + commentEndExpression_.matchedLength();
197 }
198 setFormat(startIndex, commentLength, multiLineCommentFormat_);
199 startIndex = text.indexOf(commentStartExpression_, startIndex + commentLength);
200 }
201
202 }
Highlighter::HighlightingRule
Definition: highLighter.hh:84
Highlighter::init
void init()
common initializer function called by the constructors
Definition: highLighter.cc:71
Highlighter::update
void update()
Updates the highlighter with the current rule set defined in the patterns.
Definition: highLighter.cc:120