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Diffstat (limited to 'src/designer/src/lib/shared/htmlhighlighter.cpp')
| -rw-r--r-- | src/designer/src/lib/shared/htmlhighlighter.cpp | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/designer/src/lib/shared/htmlhighlighter.cpp b/src/designer/src/lib/shared/htmlhighlighter.cpp new file mode 100644 index 000000000..d16ce62aa --- /dev/null +++ b/src/designer/src/lib/shared/htmlhighlighter.cpp @@ -0,0 +1,198 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Designer of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtCore/QTextStream> + +#include "htmlhighlighter_p.h" + +QT_BEGIN_NAMESPACE + +namespace qdesigner_internal { + +HtmlHighlighter::HtmlHighlighter(QTextEdit *textEdit) + : QSyntaxHighlighter(textEdit) +{ + QTextCharFormat entityFormat; + entityFormat.setForeground(Qt::red); + setFormatFor(Entity, entityFormat); + + QTextCharFormat tagFormat; + tagFormat.setForeground(Qt::darkMagenta); + tagFormat.setFontWeight(QFont::Bold); + setFormatFor(Tag, tagFormat); + + QTextCharFormat commentFormat; + commentFormat.setForeground(Qt::gray); + commentFormat.setFontItalic(true); + setFormatFor(Comment, commentFormat); + + QTextCharFormat attributeFormat; + attributeFormat.setForeground(Qt::black); + attributeFormat.setFontWeight(QFont::Bold); + setFormatFor(Attribute, attributeFormat); + + QTextCharFormat valueFormat; + valueFormat.setForeground(Qt::blue); + setFormatFor(Value, valueFormat); +} + +void HtmlHighlighter::setFormatFor(Construct construct, + const QTextCharFormat &format) +{ + m_formats[construct] = format; + rehighlight(); +} + +void HtmlHighlighter::highlightBlock(const QString &text) +{ + static const QLatin1Char tab = QLatin1Char('\t'); + static const QLatin1Char space = QLatin1Char(' '); + static const QLatin1Char amp = QLatin1Char('&'); + static const QLatin1Char startTag = QLatin1Char('<'); + static const QLatin1Char endTag = QLatin1Char('>'); + static const QLatin1Char quot = QLatin1Char('"'); + static const QLatin1Char apos = QLatin1Char('\''); + static const QLatin1Char semicolon = QLatin1Char(';'); + static const QLatin1Char equals = QLatin1Char('='); + static const QLatin1String startComment = QLatin1String("<!--"); + static const QLatin1String endComment = QLatin1String("-->"); + static const QLatin1String endElement = QLatin1String("/>"); + + int state = previousBlockState(); + int len = text.length(); + int start = 0; + int pos = 0; + + while (pos < len) { + switch (state) { + case NormalState: + default: + while (pos < len) { + QChar ch = text.at(pos); + if (ch == startTag) { + if (text.mid(pos, 4) == startComment) { + state = InComment; + } else { + state = InTag; + start = pos; + while (pos < len && text.at(pos) != space + && text.at(pos) != endTag + && text.at(pos) != tab + && text.mid(pos, 2) != endElement) + ++pos; + if (text.mid(pos, 2) == endElement) + ++pos; + setFormat(start, pos - start, + m_formats[Tag]); + break; + } + break; + } else if (ch == amp) { + start = pos; + while (pos < len && text.at(pos++) != semicolon) + ; + setFormat(start, pos - start, + m_formats[Entity]); + } else { + // No tag, comment or entity started, continue... + ++pos; + } + } + break; + case InComment: + start = pos; + while (pos < len) { + if (text.mid(pos, 3) == endComment) { + pos += 3; + state = NormalState; + break; + } else { + ++pos; + } + } + setFormat(start, pos - start, m_formats[Comment]); + break; + case InTag: + QChar quote = QChar::Null; + while (pos < len) { + QChar ch = text.at(pos); + if (quote.isNull()) { + start = pos; + if (ch == apos || ch == quot) { + quote = ch; + } else if (ch == endTag) { + ++pos; + setFormat(start, pos - start, m_formats[Tag]); + state = NormalState; + break; + } else if (text.mid(pos, 2) == endElement) { + pos += 2; + setFormat(start, pos - start, m_formats[Tag]); + state = NormalState; + break; + } else if (ch != space && text.at(pos) != tab) { + // Tag not ending, not a quote and no whitespace, so + // we must be dealing with an attribute. + ++pos; + while (pos < len && text.at(pos) != space + && text.at(pos) != tab + && text.at(pos) != equals) + ++pos; + setFormat(start, pos - start, m_formats[Attribute]); + start = pos; + } + } else if (ch == quote) { + quote = QChar::Null; + + // Anything quoted is a value + setFormat(start, pos - start, m_formats[Value]); + } + ++pos; + } + break; + } + } + setCurrentBlockState(state); +} + +} // namespace qdesigner_internal + +QT_END_NAMESPACE |