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Added HTML Highlighter
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175
src/tools/htmlhighlighter.cpp
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175
src/tools/htmlhighlighter.cpp
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/* ============================================================
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* QupZilla - WebKit based browser
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* Copyright (C) 2010-2011 nowrep
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* ============================================================ */
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "htmlhighlighter.h"
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HtmlHighlighter::HtmlHighlighter(QTextDocument *parent)
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: QSyntaxHighlighter(parent)
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{
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HighlightingRule rule;
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keywordFormat.setForeground(Qt::darkBlue);
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keywordFormat.setFontWeight(QFont::Bold);
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QStringList keywordPatterns;
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keywordPatterns << "(<body|</body)"
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<< "(<html|</html>|<!DOCTYPE html>|<!DOCTYPE html PUBLIC)" << "(<div|</div)" << "(<p|</p)"
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<< "(<head|</head)" << "(<meta|</meta)" << "(<title|</title)"
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<< "(<table|</table)" << "(<td|</td)" << "(<tr|</tr)"
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<< "(<span|</span)" << "(<link|</link)" << "(<script|</script)"
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<< "(<style|</style)" << "(<h1|</h1)" << "(<h2|</h2)"
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<< "(<h3|</h3)" << "(<h4|</h4" << "(<h5|</h5)"
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<< "(<ul|</ul)" << "(<li|</li)" << "(<a|</a)"
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<< "(<code|</code)" << "(<pre|</pre)" << "(<ol|</ol)"
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<< "(<b|</b)" << "(<i|</i)" << "(<col|</col)"
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<< "(<u|</u)" << "(<br)" << "(<form|</form)"
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<< "(<label|</label)" << "(<input|</input)" << "(<img|</img)"
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<< "(<center|</center)" << "(<option|</option)" << "(<select|</select)"
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<< "(<hr|</hr)" << "(<object|</object)" << "(<param|</param)"
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<< "(<tbody|</tbody)" << "(<thead|</thead)" << "(<tfooter|</tfooter)"
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<< "(<h6|</h6)" << "(<font|</font)" << "(<noscript|</noscript)"
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<< "(<embed|</embed)" << "(<base|</base)" << "(<canvas|</canvas)"
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<< "(<cufon|</cufon)" << "(<cufontext|</cufontext)" << "(<button|</button)"
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<< "(<dl|</dl)" << "(<dt|</dt)" << "(<dd|</dd)"
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<< "(<strong|</strong)" << "(<dt|</dt)" << "(<dd|</dd)"
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<< "(<ol|</ol)" << "(<small|</small)" << ">";
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foreach (const QString &pattern, keywordPatterns) {
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rule.pattern = QRegExp(pattern);
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rule.format = keywordFormat;
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highlightingRules.append(rule);
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}
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tagOptionsFormat.setForeground(Qt::black);
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tagOptionsFormat.setFontWeight(QFont::Bold);
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QStringList optionsPatterns;
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optionsPatterns << "type=\"" << "value=\"" << "name=\""
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<< "on(.{0,15})=\"" << "id=\"" << "style=\""
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<< "action=\"" << "method=\"" << "src=\""
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<< "rel=\"" << "content=\"" << "width=\""
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<< "height=\"" << "alt=\"" << "class=\""
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<< "for=\"" << "tabindex=\"" << "selected=\""
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<< "http-equiv=\"" << "media=\"" << "lang=\""
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<< "xml:lang=\"" << "dir=\"" << "accesskey=\""
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<< "target=\"" << "align=\"" << "checked=\""
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<< "language=\"" << "charset=\"" << "allowfullscreen=\""
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<< "text=\"" << "loop=\"" << "menu=\""
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<< "wmode=\"" << "classid=\"" << "border=\""
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<< "cellspacing=\"" << "cellpadding=\"" << "clear=\""
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<< "for=\"" << "tabindex=\"" << "selected=\""
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<< "href=\"" << "title=\"";
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foreach (const QString &pattern, optionsPatterns) {
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rule.pattern = QRegExp(pattern);
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rule.format = tagOptionsFormat;
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highlightingRules.append(rule);
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}
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singleLineCommentFormat.setForeground(Qt::red);
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rule.pattern = QRegExp("//[^\n]*");
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rule.format = singleLineCommentFormat;
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// highlightingRules.append(rule);
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multiLineCommentFormat.setForeground(Qt::gray);
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quotationFormat.setForeground(Qt::darkGreen);
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QRegExp rx("\".*\"");
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rx.setMinimal(true);
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rule.pattern = rx;
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rule.format = quotationFormat;
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highlightingRules.append(rule);
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functionFormat.setFontWeight(QFont::Normal);
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functionFormat.setForeground(Qt::red);
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// rule.pattern = QRegExp("(<script(.*)</script>|<style(.*)</style>)");
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rx.setPattern("<script(.*)</script>");
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rx.setMinimal(true);
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rule.pattern = rx;
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rule.format = functionFormat;
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// highlightingRules.append(rule);
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commentStartExpression = QRegExp("<!--");
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commentEndExpression = QRegExp("-->");
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}
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void HtmlHighlighter::highlightBlock(const QString &text)
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{
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foreach (const HighlightingRule &rule, highlightingRules) {
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QRegExp expression(rule.pattern);
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int index = expression.indexIn(text);
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while (index >= 0) {
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int length = expression.matchedLength();
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setFormat(index, length, rule.format);
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index = expression.indexIn(text, index + length);
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}
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}
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setCurrentBlockState(0);
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int startIndex = 0;
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if (previousBlockState() != 1)
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startIndex = commentStartExpression.indexIn(text);
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while (startIndex >= 0) {
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int endIndex = commentEndExpression.indexIn(text, startIndex);
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int commentLength;
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if (endIndex == -1) {
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setCurrentBlockState(1);
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commentLength = text.length() - startIndex;
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} else {
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commentLength = endIndex - startIndex
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+ commentEndExpression.matchedLength();
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}
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setFormat(startIndex, commentLength, multiLineCommentFormat);
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startIndex = commentStartExpression.indexIn(text, startIndex + commentLength);
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}
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}
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96
src/tools/htmlhighlighter.h
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96
src/tools/htmlhighlighter.h
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@ -0,0 +1,96 @@
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/* ============================================================
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* QupZilla - WebKit based browser
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* Copyright (C) 2010-2011 nowrep
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* ============================================================ */
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef HTMLHIGHLIGHTER_H
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#define HTMLHIGHLIGHTER_H
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#include <QSyntaxHighlighter>
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#include <QHash>
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#include <QTextCharFormat>
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class QTextDocument;
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class HtmlHighlighter : public QSyntaxHighlighter
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{
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Q_OBJECT
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public:
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HtmlHighlighter(QTextDocument *parent = 0);
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protected:
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void highlightBlock(const QString &text);
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private:
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struct HighlightingRule
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{
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QRegExp pattern;
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QTextCharFormat format;
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};
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QVector<HighlightingRule> highlightingRules;
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QRegExp commentStartExpression;
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QRegExp commentEndExpression;
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QTextCharFormat keywordFormat;
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QTextCharFormat tagOptionsFormat;
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QTextCharFormat singleLineCommentFormat;
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QTextCharFormat multiLineCommentFormat;
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QTextCharFormat quotationFormat;
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QTextCharFormat functionFormat;
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};
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#endif
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