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Diffstat (limited to 'src/quick/util/qdeclarativestyledtext.cpp')
| -rw-r--r-- | src/quick/util/qdeclarativestyledtext.cpp | 815 |
1 files changed, 0 insertions, 815 deletions
diff --git a/src/quick/util/qdeclarativestyledtext.cpp b/src/quick/util/qdeclarativestyledtext.cpp deleted file mode 100644 index ddb8cadd2a..0000000000 --- a/src/quick/util/qdeclarativestyledtext.cpp +++ /dev/null @@ -1,815 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the QtDeclarative module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** 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. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <QStack> -#include <QVector> -#include <QPainter> -#include <QTextLayout> -#include <QDebug> -#include <qmath.h> -#include "qdeclarativestyledtext_p.h" -#include <QDeclarativeContext> - -/* - QDeclarativeStyledText supports few tags: - - <b></b> - bold - <strong></strong> - bold - <i></i> - italic - <br> - new line - <p> - paragraph - <u> - underlined text - <font color="color_name" size="1-7"></font> - <h1> to <h6> - headers - <a href=""> - anchor - <ol type="">, <ul type=""> and <li> - ordered and unordered lists - <pre></pre> - preformated - <img src=""> - images - - The opening and closing tags must be correctly nested. -*/ - -QT_BEGIN_NAMESPACE - -Q_GUI_EXPORT int qt_defaultDpi(); - -class QDeclarativeStyledTextPrivate -{ -public: - enum ListType { Ordered, Unordered }; - enum ListFormat { Bullet, Disc, Square, Decimal, LowerAlpha, UpperAlpha, LowerRoman, UpperRoman }; - - struct List { - int level; - ListType type; - ListFormat format; - }; - - QDeclarativeStyledTextPrivate(const QString &t, QTextLayout &l, - QList<QDeclarativeStyledTextImgTag*> &imgTags, - const QUrl &baseUrl, - QDeclarativeContext *context, - bool preloadImages, - bool *fontSizeModified) - : text(t), layout(l), imgTags(&imgTags), baseFont(layout.font()), baseUrl(baseUrl), hasNewLine(false), nbImages(0), updateImagePositions(false) - , preFormat(false), prependSpace(false), hasSpace(true), preloadImages(preloadImages), fontSizeModified(fontSizeModified), context(context) - { - } - - void parse(); - void appendText(const QString &textIn, int start, int length, QString &textOut); - bool parseTag(const QChar *&ch, const QString &textIn, QString &textOut, QTextCharFormat &format); - bool parseCloseTag(const QChar *&ch, const QString &textIn, QString &textOut); - void parseEntity(const QChar *&ch, const QString &textIn, QString &textOut); - bool parseFontAttributes(const QChar *&ch, const QString &textIn, QTextCharFormat &format); - bool parseOrderedListAttributes(const QChar *&ch, const QString &textIn); - bool parseUnorderedListAttributes(const QChar *&ch, const QString &textIn); - bool parseAnchorAttributes(const QChar *&ch, const QString &textIn, QTextCharFormat &format); - void parseImageAttributes(const QChar *&ch, const QString &textIn, QString &textOut); - QPair<QStringRef,QStringRef> parseAttribute(const QChar *&ch, const QString &textIn); - QStringRef parseValue(const QChar *&ch, const QString &textIn); - void setFontSize(int size, QTextCharFormat &format); - - inline void skipSpace(const QChar *&ch) { - while (ch->isSpace() && !ch->isNull()) - ++ch; - } - - static QString toAlpha(int value, bool upper); - static QString toRoman(int value, bool upper); - - QString text; - QTextLayout &layout; - QList<QDeclarativeStyledTextImgTag*> *imgTags; - QFont baseFont; - QStack<List> listStack; - QUrl baseUrl; - bool hasNewLine; - int nbImages; - bool updateImagePositions; - bool preFormat; - bool prependSpace; - bool hasSpace; - bool preloadImages; - bool *fontSizeModified; - QDeclarativeContext *context; - - 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; - static const QChar bullet; - static const QChar disc; - static const QChar square; - static const QChar lineFeed; - static const QChar space; - static const int tabsize = 6; -}; - -const QChar QDeclarativeStyledTextPrivate::lessThan(QLatin1Char('<')); -const QChar QDeclarativeStyledTextPrivate::greaterThan(QLatin1Char('>')); -const QChar QDeclarativeStyledTextPrivate::equals(QLatin1Char('=')); -const QChar QDeclarativeStyledTextPrivate::singleQuote(QLatin1Char('\'')); -const QChar QDeclarativeStyledTextPrivate::doubleQuote(QLatin1Char('\"')); -const QChar QDeclarativeStyledTextPrivate::slash(QLatin1Char('/')); -const QChar QDeclarativeStyledTextPrivate::ampersand(QLatin1Char('&')); -const QChar QDeclarativeStyledTextPrivate::bullet(0x2022); -const QChar QDeclarativeStyledTextPrivate::disc(0x25e6); -const QChar QDeclarativeStyledTextPrivate::square(0x25a1); -const QChar QDeclarativeStyledTextPrivate::lineFeed(QLatin1Char('\n')); -const QChar QDeclarativeStyledTextPrivate::space(QLatin1Char(' ')); - -QDeclarativeStyledText::QDeclarativeStyledText(const QString &string, QTextLayout &layout, - QList<QDeclarativeStyledTextImgTag*> &imgTags, - const QUrl &baseUrl, - QDeclarativeContext *context, - bool preloadImages, - bool *fontSizeModified) - : d(new QDeclarativeStyledTextPrivate(string, layout, imgTags, baseUrl, context, preloadImages, fontSizeModified)) -{ -} - -QDeclarativeStyledText::~QDeclarativeStyledText() -{ - delete d; -} - -void QDeclarativeStyledText::parse(const QString &string, QTextLayout &layout, - QList<QDeclarativeStyledTextImgTag*> &imgTags, - const QUrl &baseUrl, - QDeclarativeContext *context, - bool preloadImages, - bool *fontSizeModified) -{ - if (string.isEmpty()) - return; - QDeclarativeStyledText styledText(string, layout, imgTags, baseUrl, context, preloadImages, fontSizeModified); - styledText.d->parse(); -} - -void QDeclarativeStyledTextPrivate::parse() -{ - QList<QTextLayout::FormatRange> ranges; - QStack<QTextCharFormat> formatStack; - - QString drawText; - drawText.reserve(text.count()); - - updateImagePositions = !imgTags->isEmpty(); - - int textStart = 0; - int textLength = 0; - int rangeStart = 0; - bool formatChanged = false; - - const QChar *ch = text.constData(); - while (!ch->isNull()) { - if (*ch == lessThan) { - if (textLength) { - appendText(text, textStart, textLength, drawText); - } else if (prependSpace) { - drawText.append(space); - prependSpace = false; - hasSpace = true; - } - - if (rangeStart != drawText.length() && formatStack.count()) { - if (formatChanged) { - QTextLayout::FormatRange formatRange; - formatRange.format = formatStack.top(); - formatRange.start = rangeStart; - formatRange.length = drawText.length() - rangeStart; - ranges.append(formatRange); - formatChanged = false; - } else if (ranges.count()) { - ranges.last().length += drawText.length() - rangeStart; - } - } - rangeStart = drawText.length(); - ++ch; - if (*ch == slash) { - ++ch; - if (parseCloseTag(ch, text, drawText)) { - if (formatStack.count()) { - formatChanged = true; - formatStack.pop(); - } - } - } else { - QTextCharFormat format; - if (formatStack.count()) - format = formatStack.top(); - if (parseTag(ch, text, drawText, format)) { - formatChanged = true; - formatStack.push(format); - } - } - textStart = ch - text.constData() + 1; - textLength = 0; - } else if (*ch == ampersand) { - ++ch; - appendText(text, textStart, textLength, drawText); - parseEntity(ch, text, drawText); - textStart = ch - text.constData() + 1; - textLength = 0; - } else if (ch->isSpace()) { - if (textLength) - appendText(text, textStart, textLength, drawText); - if (!preFormat) { - prependSpace = !hasSpace; - for (const QChar *n = ch + 1; !n->isNull() && n->isSpace(); ++n) - ch = n; - hasNewLine = false; - } else if (*ch == lineFeed) { - drawText.append(QChar(QChar::LineSeparator)); - hasNewLine = true; - } else { - drawText.append(QChar(QChar::Nbsp)); - hasNewLine = false; - } - textStart = ch - text.constData() + 1; - textLength = 0; - } else { - ++textLength; - } - if (!ch->isNull()) - ++ch; - } - if (textLength) - appendText(text, textStart, textLength, drawText); - if (rangeStart != drawText.length() && formatStack.count()) { - if (formatChanged) { - QTextLayout::FormatRange formatRange; - formatRange.format = formatStack.top(); - formatRange.start = rangeStart; - formatRange.length = drawText.length() - rangeStart; - ranges.append(formatRange); - } else if (ranges.count()) { - ranges.last().length += drawText.length() - rangeStart; - } - } - - layout.setText(drawText); - layout.setAdditionalFormats(ranges); -} - -void QDeclarativeStyledTextPrivate::appendText(const QString &textIn, int start, int length, QString &textOut) -{ - if (prependSpace) - textOut.append(space); - textOut.append(QStringRef(&textIn, start, length)); - prependSpace = false; - hasSpace = false; - hasNewLine = false; -} - -// -// Calculates and sets the correct font size in points -// depending on the size multiplier and base font. -// -void QDeclarativeStyledTextPrivate::setFontSize(int size, QTextCharFormat &format) -{ - static const qreal scaling[] = { 0.7, 0.8, 1.0, 1.2, 1.5, 2.0, 2.4 }; - if (baseFont.pointSizeF() != -1) - format.setFontPointSize(baseFont.pointSize() * scaling[size - 1]); - else - format.setFontPointSize(baseFont.pixelSize() * qreal(72.) / qreal(qt_defaultDpi()) * scaling[size - 1]); - *fontSizeModified = true; -} - -bool QDeclarativeStyledTextPrivate::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) { - if (tagLength == 0) - return false; - 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)); - hasSpace = true; - prependSpace = false; - return false; - } - } else if (char0 == QLatin1Char('i')) { - if (tagLength == 1) { - format.setFontItalic(true); - return true; - } - } else if (char0 == QLatin1Char('p')) { - if (tagLength == 1) { - if (!hasNewLine) - textOut.append(QChar::LineSeparator); - hasSpace = true; - prependSpace = false; - } else if (tag == QLatin1String("pre")) { - preFormat = true; - if (!hasNewLine) - textOut.append(QChar::LineSeparator); - format.setFontFamily(QString::fromLatin1("Courier New,courier")); - format.setFontFixedPitch(true); - return true; - } - } else if (char0 == QLatin1Char('u')) { - if (tagLength == 1) { - format.setFontUnderline(true); - return true; - } else if (tag == QLatin1String("ul")) { - List listItem; - listItem.level = 0; - listItem.type = Unordered; - listItem.format = Bullet; - listStack.push(listItem); - } - } else if (char0 == QLatin1Char('h') && tagLength == 2) { - int level = tag.at(1).digitValue(); - if (level >= 1 && level <= 6) { - if (!hasNewLine) - textOut.append(QChar::LineSeparator); - hasSpace = true; - prependSpace = false; - setFontSize(7 - level, format); - format.setFontWeight(QFont::Bold); - return true; - } - } else if (tag == QLatin1String("strong")) { - format.setFontWeight(QFont::Bold); - return true; - } else if (tag == QLatin1String("ol")) { - List listItem; - listItem.level = 0; - listItem.type = Ordered; - listItem.format = Decimal; - listStack.push(listItem); - } else if (tag == QLatin1String("li")) { - if (!hasNewLine) - textOut.append(QChar(QChar::LineSeparator)); - if (!listStack.isEmpty()) { - int count = ++listStack.top().level; - for (int i = 0; i < listStack.size(); ++i) - textOut += QString(tabsize, QChar::Nbsp); - switch (listStack.top().format) { - case Decimal: - textOut += QString::number(count) % QLatin1Char('.'); - break; - case LowerAlpha: - textOut += toAlpha(count, false) % QLatin1Char('.'); - break; - case UpperAlpha: - textOut += toAlpha(count, true) % QLatin1Char('.'); - break; - case LowerRoman: - textOut += toRoman(count, false) % QLatin1Char('.'); - break; - case UpperRoman: - textOut += toRoman(count, true) % QLatin1Char('.'); - break; - case Bullet: - textOut += bullet; - break; - case Disc: - textOut += disc; - break; - case Square: - textOut += square; - break; - } - textOut += QString(2, QChar::Nbsp); - } - } - return false; - } else if (ch->isSpace()) { - // may have params. - QStringRef tag(&textIn, tagStart, tagLength); - if (tag == QLatin1String("font")) - return parseFontAttributes(ch, textIn, format); - if (tag == QLatin1String("ol")) { - parseOrderedListAttributes(ch, textIn); - return false; // doesn't modify format - } - if (tag == QLatin1String("ul")) { - parseUnorderedListAttributes(ch, textIn); - return false; // doesn't modify format - } - if (tag == QLatin1String("a")) { - return parseAnchorAttributes(ch, textIn, format); - } - if (tag == QLatin1String("img")) { - parseImageAttributes(ch, textIn, textOut); - return false; - } - if (*ch == greaterThan || ch->isNull()) - continue; - } else if (*ch != slash) { - tagLength++; - } - ++ch; - } - return false; -} - -bool QDeclarativeStyledTextPrivate::parseCloseTag(const QChar *&ch, const QString &textIn, QString &textOut) -{ - skipSpace(ch); - - int tagStart = ch - textIn.constData(); - int tagLength = 0; - while (!ch->isNull()) { - if (*ch == greaterThan) { - if (tagLength == 0) - return false; - QStringRef tag(&textIn, tagStart, tagLength); - const QChar char0 = tag.at(0); - hasNewLine = false; - if (char0 == QLatin1Char('b')) { - if (tagLength == 1) - return true; - else if (tag.at(1) == QLatin1Char('r') && tagLength == 2) - return false; - } else if (char0 == QLatin1Char('i')) { - if (tagLength == 1) - return true; - } else if (char0 == QLatin1Char('a')) { - if (tagLength == 1) - return true; - } else if (char0 == QLatin1Char('p')) { - if (tagLength == 1) { - textOut.append(QChar::LineSeparator); - hasNewLine = true; - hasSpace = true; - return false; - } else if (tag == QLatin1String("pre")) { - preFormat = false; - if (!hasNewLine) - textOut.append(QChar::LineSeparator); - hasNewLine = true; - hasSpace = true; - return true; - } - } else if (char0 == QLatin1Char('u')) { - if (tagLength == 1) - return true; - else if (tag == QLatin1String("ul")) { - if (!listStack.isEmpty()) { - listStack.pop(); - if (!listStack.count()) - textOut.append(QChar::LineSeparator); - } - return false; - } - } else if (char0 == QLatin1Char('h') && tagLength == 2) { - textOut.append(QChar::LineSeparator); - hasNewLine = true; - hasSpace = true; - return true; - } else if (tag == QLatin1String("font")) { - return true; - } else if (tag == QLatin1String("strong")) { - return true; - } else if (tag == QLatin1String("ol")) { - if (!listStack.isEmpty()) { - listStack.pop(); - if (!listStack.count()) - textOut.append(QChar::LineSeparator); - } - return false; - } else if (tag == QLatin1String("li")) { - return false; - } - return false; - } else if (!ch->isSpace()){ - tagLength++; - } - ++ch; - } - - return false; -} - -void QDeclarativeStyledTextPrivate::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 QDeclarativeStyledTextPrivate::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) - setFontSize(size, format); - } - } while (!ch->isNull() && !attr.first.isEmpty()); - - return valid; -} - -bool QDeclarativeStyledTextPrivate::parseOrderedListAttributes(const QChar *&ch, const QString &textIn) -{ - bool valid = false; - - List listItem; - listItem.level = 0; - listItem.type = Ordered; - listItem.format = Decimal; - - QPair<QStringRef,QStringRef> attr; - do { - attr = parseAttribute(ch, textIn); - if (attr.first == QLatin1String("type")) { - valid = true; - if (attr.second == QLatin1String("a")) - listItem.format = LowerAlpha; - else if (attr.second == QLatin1String("A")) - listItem.format = UpperAlpha; - else if (attr.second == QLatin1String("i")) - listItem.format = LowerRoman; - else if (attr.second == QLatin1String("I")) - listItem.format = UpperRoman; - } - } while (!ch->isNull() && !attr.first.isEmpty()); - - listStack.push(listItem); - return valid; -} - -bool QDeclarativeStyledTextPrivate::parseUnorderedListAttributes(const QChar *&ch, const QString &textIn) -{ - bool valid = false; - - List listItem; - listItem.level = 0; - listItem.type = Unordered; - listItem.format = Bullet; - - QPair<QStringRef,QStringRef> attr; - do { - attr = parseAttribute(ch, textIn); - if (attr.first == QLatin1String("type")) { - valid = true; - if (attr.second == QLatin1String("disc")) - listItem.format = Disc; - else if (attr.second == QLatin1String("square")) - listItem.format = Square; - } - } while (!ch->isNull() && !attr.first.isEmpty()); - - listStack.push(listItem); - return valid; -} - -bool QDeclarativeStyledTextPrivate::parseAnchorAttributes(const QChar *&ch, const QString &textIn, QTextCharFormat &format) -{ - bool valid = false; - - QPair<QStringRef,QStringRef> attr; - do { - attr = parseAttribute(ch, textIn); - if (attr.first == QLatin1String("href")) { - format.setAnchorHref(attr.second.toString()); - format.setAnchor(true); - format.setFontUnderline(true); - valid = true; - } - } while (!ch->isNull() && !attr.first.isEmpty()); - - return valid; -} - -void QDeclarativeStyledTextPrivate::parseImageAttributes(const QChar *&ch, const QString &textIn, QString &textOut) -{ - qreal imgWidth = 0.0; - - if (!updateImagePositions) { - QDeclarativeStyledTextImgTag *image = new QDeclarativeStyledTextImgTag; - image->position = textOut.length() + 1; - - QPair<QStringRef,QStringRef> attr; - do { - attr = parseAttribute(ch, textIn); - if (attr.first == QLatin1String("src")) { - image->url = QUrl(attr.second.toString()); - } else if (attr.first == QLatin1String("width")) { - image->size.setWidth(attr.second.toString().toInt()); - } else if (attr.first == QLatin1String("height")) { - image->size.setHeight(attr.second.toString().toInt()); - } else if (attr.first == QLatin1String("align")) { - if (attr.second.toString() == QLatin1String("top")) { - image->align = QDeclarativeStyledTextImgTag::Top; - } else if (attr.second.toString() == QLatin1String("middle")) { - image->align = QDeclarativeStyledTextImgTag::Middle; - } - } - } while (!ch->isNull() && !attr.first.isEmpty()); - - if (preloadImages && !image->size.isValid()) { - // if we don't know its size but the image is a local image, - // we load it in the pixmap cache and save its implicit size - // to avoid a relayout later on. - QUrl url = baseUrl.resolved(image->url); - if (url.isLocalFile()) { - QDeclarativePixmap *pix = new QDeclarativePixmap(context->engine(), url, image->size); - if (pix && pix->isReady()) { - image->size = pix->implicitSize(); - image->pix = pix; - } - } - } - - imgWidth = image->size.width(); - imgTags->append(image); - - } else { - // if we already have a list of img tags for this text - // we only want to update the positions of these tags. - QDeclarativeStyledTextImgTag *image = imgTags->value(nbImages); - image->position = textOut.length() + 1; - imgWidth = image->size.width(); - QPair<QStringRef,QStringRef> attr; - do { - attr = parseAttribute(ch, textIn); - } while (!ch->isNull() && !attr.first.isEmpty()); - nbImages++; - } - - QFontMetricsF fm(layout.font()); - QString padding(qFloor(imgWidth / fm.width(QChar::Nbsp)), QChar::Nbsp); - textOut += QLatin1Char(' '); - textOut += padding; - textOut += QLatin1Char(' '); -} - -QPair<QStringRef,QStringRef> QDeclarativeStyledTextPrivate::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 QDeclarativeStyledTextPrivate::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); -} - -QString QDeclarativeStyledTextPrivate::toAlpha(int value, bool upper) -{ - const char baseChar = upper ? 'A' : 'a'; - - QString result; - int c = value; - while (c > 0) { - c--; - result.prepend(QChar(baseChar + (c % 26))); - c /= 26; - } - return result; -} - -QString QDeclarativeStyledTextPrivate::toRoman(int value, bool upper) -{ - QString result = QLatin1String("?"); - // works for up to 4999 items - if (value < 5000) { - QByteArray romanNumeral; - - static const char romanSymbolsLower[] = "iiivixxxlxcccdcmmmm"; - static const char romanSymbolsUpper[] = "IIIVIXXXLXCCCDCMMMM"; - QByteArray romanSymbols; - if (!upper) - romanSymbols = QByteArray::fromRawData(romanSymbolsLower, sizeof(romanSymbolsLower)); - else - romanSymbols = QByteArray::fromRawData(romanSymbolsUpper, sizeof(romanSymbolsUpper)); - - int c[] = { 1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000 }; - int n = value; - for (int i = 12; i >= 0; n %= c[i], i--) { - int q = n / c[i]; - if (q > 0) { - int startDigit = i + (i + 3) / 4; - int numDigits; - if (i % 4) { - if ((i - 2) % 4) - numDigits = 2; - else - numDigits = 1; - } - else - numDigits = q; - romanNumeral.append(romanSymbols.mid(startDigit, numDigits)); - } - } - result = QString::fromLatin1(romanNumeral); - } - return result; -} - -QT_END_NAMESPACE |