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Added HTML Highlighter

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remotes/origin/falkon
nowrep 15 years ago
parent a1c57ae4d1
commit 02771ec37b
2 changed files with 271 additions and 0 deletions
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  1. 175
      src/tools/htmlhighlighter.cpp
  2. 96
      src/tools/htmlhighlighter.h

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

96
src/tools/htmlhighlighter.h
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/* ============================================================
* QupZilla - WebKit based browser
* Copyright (C) 2010-2011 nowrep
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* ============================================================ */
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef HTMLHIGHLIGHTER_H
#define HTMLHIGHLIGHTER_H
#include <QSyntaxHighlighter>
#include <QHash>
#include <QTextCharFormat>
class QTextDocument;
class HtmlHighlighter : public QSyntaxHighlighter
{
Q_OBJECT
public:
HtmlHighlighter(QTextDocument *parent = 0);
protected:
void highlightBlock(const QString &text);
private:
struct HighlightingRule
{
QRegExp pattern;
QTextCharFormat format;
};
QVector<HighlightingRule> highlightingRules;
QRegExp commentStartExpression;
QRegExp commentEndExpression;
QTextCharFormat keywordFormat;
QTextCharFormat tagOptionsFormat;
QTextCharFormat singleLineCommentFormat;
QTextCharFormat multiLineCommentFormat;
QTextCharFormat quotationFormat;
QTextCharFormat functionFormat;
};
#endif
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