diff options
Diffstat (limited to 'src/declarative/util/qmlstyledtext.cpp')
| -rw-r--r-- | src/declarative/util/qmlstyledtext.cpp | 347 |
1 files changed, 0 insertions, 347 deletions
diff --git a/src/declarative/util/qmlstyledtext.cpp b/src/declarative/util/qmlstyledtext.cpp deleted file mode 100644 index 1f31214..0000000 --- a/src/declarative/util/qmlstyledtext.cpp +++ /dev/null @@ -1,347 +0,0 @@ -/**************************************************************************** -** -** 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 QtDeclarative module 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 <QStack> -#include <QVector> -#include <QPainter> -#include <QTextLayout> -#include <QDebug> -#include <qmath.h> -#include "qmlstyledtext_p.h" - -/* - QmlStyledText supports few tags: - - <b></b> - bold - <i></i> - italic - <br> - new line - <font color="color_name" size="1-7"></font> - - The opening and closing tags must be correctly nested. -*/ - -QT_BEGIN_NAMESPACE - -class QmlStyledTextPrivate -{ -public: - QmlStyledTextPrivate(const QString &t, QTextLayout &l) : text(t), layout(l), baseFont(layout.font()) {} - - void parse(); - bool parseTag(const QChar *&ch, const QString &textIn, QString &textOut, QTextCharFormat &format); - bool parseCloseTag(const QChar *&ch, const QString &textIn); - void parseEntity(const QChar *&ch, const QString &textIn, QString &textOut); - bool parseFontAttributes(const QChar *&ch, const QString &textIn, QTextCharFormat &format); - QPair<QStringRef,QStringRef> parseAttribute(const QChar *&ch, const QString &textIn); - QStringRef parseValue(const QChar *&ch, const QString &textIn); - - inline void skipSpace(const QChar *&ch) { - while (ch->isSpace() && !ch->isNull()) - ++ch; - } - - QString text; - QTextLayout &layout; - QFont baseFont; - - static const QChar lessThan; - static const QChar greaterThan; - static const QChar equals; - static const QChar singleQuote; - static const QChar doubleQuote; - static const QChar slash; - static const QChar ampersand; -}; - -const QChar QmlStyledTextPrivate::lessThan(QLatin1Char('<')); -const QChar QmlStyledTextPrivate::greaterThan(QLatin1Char('>')); -const QChar QmlStyledTextPrivate::equals(QLatin1Char('=')); -const QChar QmlStyledTextPrivate::singleQuote(QLatin1Char('\'')); -const QChar QmlStyledTextPrivate::doubleQuote(QLatin1Char('\"')); -const QChar QmlStyledTextPrivate::slash(QLatin1Char('/')); -const QChar QmlStyledTextPrivate::ampersand(QLatin1Char('&')); - -QmlStyledText::QmlStyledText(const QString &string, QTextLayout &layout) -: d(new QmlStyledTextPrivate(string, layout)) -{ -} - -QmlStyledText::~QmlStyledText() -{ - delete d; -} - -void QmlStyledText::parse(const QString &string, QTextLayout &layout) -{ - QmlStyledText styledText(string, layout); - styledText.d->parse(); -} - -void QmlStyledTextPrivate::parse() -{ - QList<QTextLayout::FormatRange> ranges; - QStack<QTextCharFormat> formatStack; - - QString drawText; - drawText.reserve(text.count()); - - int textStart = 0; - int textLength = 0; - int rangeStart = 0; - const QChar *ch = text.constData(); - while (!ch->isNull()) { - if (*ch == lessThan) { - if (textLength) - drawText.append(QStringRef(&text, textStart, textLength)); - if (rangeStart != drawText.length() && formatStack.count()) { - QTextLayout::FormatRange formatRange; - formatRange.format = formatStack.top(); - formatRange.start = rangeStart; - formatRange.length = drawText.length() - rangeStart; - ranges.append(formatRange); - } - rangeStart = drawText.length(); - ++ch; - if (*ch == slash) { - ++ch; - if (parseCloseTag(ch, text)) - formatStack.pop(); - } else { - QTextCharFormat format; - if (formatStack.count()) - format = formatStack.top(); - else - format.setFont(baseFont); - if (parseTag(ch, text, drawText, format)) - formatStack.push(format); - } - textStart = ch - text.constData() + 1; - textLength = 0; - } else if (*ch == ampersand) { - ++ch; - drawText.append(QStringRef(&text, textStart, textLength)); - parseEntity(ch, text, drawText); - textStart = ch - text.constData() + 1; - textLength = 0; - } else { - ++textLength; - } - ++ch; - } - if (textLength) - drawText.append(QStringRef(&text, textStart, textLength)); - if (rangeStart != drawText.length() && formatStack.count()) { - QTextLayout::FormatRange formatRange; - formatRange.format = formatStack.top(); - formatRange.start = rangeStart; - formatRange.length = drawText.length() - rangeStart; - ranges.append(formatRange); - } - - layout.setText(drawText); - layout.setAdditionalFormats(ranges); -} - -bool QmlStyledTextPrivate::parseTag(const QChar *&ch, const QString &textIn, QString &textOut, QTextCharFormat &format) -{ - skipSpace(ch); - - int tagStart = ch - textIn.constData(); - int tagLength = 0; - while (!ch->isNull()) { - if (*ch == greaterThan) { - QStringRef tag(&textIn, tagStart, tagLength); - const QChar char0 = tag.at(0); - if (char0 == QLatin1Char('b')) { - if (tagLength == 1) { - format.setFontWeight(QFont::Bold); - return true; - } else if (tagLength == 2 && tag.at(1) == QLatin1Char('r')) { - textOut.append(QChar(QChar::LineSeparator)); - return true; - } - } else if (char0 == QLatin1Char('i')) { - if (tagLength == 1) { - format.setFontItalic(true); - return true; - } - } - return false; - } else if (ch->isSpace()) { - // may have params. - QStringRef tag(&textIn, tagStart, tagLength); - if (tag == QLatin1String("font")) - return parseFontAttributes(ch, textIn, format); - if (*ch == greaterThan || ch->isNull()) - continue; - } else if (*ch != slash){ - tagLength++; - } - ++ch; - } - - return false; -} - -bool QmlStyledTextPrivate::parseCloseTag(const QChar *&ch, const QString &textIn) -{ - skipSpace(ch); - - int tagStart = ch - textIn.constData(); - int tagLength = 0; - while (!ch->isNull()) { - if (*ch == greaterThan) { - QStringRef tag(&textIn, tagStart, tagLength); - const QChar char0 = tag.at(0); - if (char0 == QLatin1Char('b')) { - if (tagLength == 1) - return true; - else if (tag.at(1) == QLatin1Char('r') && tagLength == 2) - return true; - } else if (char0 == QLatin1Char('i')) { - if (tagLength == 1) - return true; - } else if (tag == QLatin1String("font")) { - return true; - } - return false; - } else if (!ch->isSpace()){ - tagLength++; - } - ++ch; - } - - return false; -} - -void QmlStyledTextPrivate::parseEntity(const QChar *&ch, const QString &textIn, QString &textOut) -{ - int entityStart = ch - textIn.constData(); - int entityLength = 0; - while (!ch->isNull()) { - if (*ch == QLatin1Char(';')) { - QStringRef entity(&textIn, entityStart, entityLength); - if (entity == QLatin1String("gt")) - textOut += QChar(62); - else if (entity == QLatin1String("lt")) - textOut += QChar(60); - else if (entity == QLatin1String("amp")) - textOut += QChar(38); - return; - } - ++entityLength; - ++ch; - } -} - -bool QmlStyledTextPrivate::parseFontAttributes(const QChar *&ch, const QString &textIn, QTextCharFormat &format) -{ - bool valid = false; - QPair<QStringRef,QStringRef> attr; - do { - attr = parseAttribute(ch, textIn); - if (attr.first == QLatin1String("color")) { - valid = true; - format.setForeground(QColor(attr.second.toString())); - } else if (attr.first == QLatin1String("size")) { - valid = true; - int size = attr.second.toString().toInt(); - if (attr.second.at(0) == QLatin1Char('-') || attr.second.at(0) == QLatin1Char('+')) - size += 3; - if (size >= 1 && size <= 7) { - static const qreal scaling[] = { 0.7, 0.8, 1.0, 1.2, 1.5, 2.0, 2.4 }; - format.setFontPointSize(baseFont.pointSize() * scaling[size-1]); - } - } - } while (!ch->isNull() && !attr.first.isEmpty()); - - return valid; -} - -QPair<QStringRef,QStringRef> QmlStyledTextPrivate::parseAttribute(const QChar *&ch, const QString &textIn) -{ - skipSpace(ch); - - int attrStart = ch - textIn.constData(); - int attrLength = 0; - while (!ch->isNull()) { - if (*ch == greaterThan) { - break; - } else if (*ch == equals) { - ++ch; - if (*ch != singleQuote && *ch != doubleQuote) { - while (*ch != greaterThan && !ch->isNull()) - ++ch; - break; - } - ++ch; - if (!attrLength) - break; - QStringRef attr(&textIn, attrStart, attrLength); - QStringRef val = parseValue(ch, textIn); - if (!val.isEmpty()) - return QPair<QStringRef,QStringRef>(attr,val); - break; - } else { - ++attrLength; - } - ++ch; - } - - return QPair<QStringRef,QStringRef>(); -} - -QStringRef QmlStyledTextPrivate::parseValue(const QChar *&ch, const QString &textIn) -{ - int valStart = ch - textIn.constData(); - int valLength = 0; - while (*ch != singleQuote && *ch != doubleQuote && !ch->isNull()) { - ++valLength; - ++ch; - } - if (ch->isNull()) - return QStringRef(); - ++ch; // skip quote - - return QStringRef(&textIn, valStart, valLength); -} - -QT_END_NAMESPACE |