KoSvgTextShapeMarkupConverter Class Reference

#include <KoSvgTextShapeMarkupConverter.h>

Classes
struct	ExtraStyles
struct	Private

Public Types
enum class	WrappingMode { QtLegacy = 0 , WhiteSpacePre , WhiteSpacePreWrap }

Public Member Functions
bool	convertDocumentToSvg (const QTextDocument *doc, QString *svgText)
	convertDocumentToSvg
bool	convertFromHtml (const QString &htmlText, QString *svgText, QString *styles)
	convertFromHtml converted Qt rich text html (and no other: https://doc.qt.io/qt-5/richtext-html-subset.html) to SVG
bool	convertFromSvg (const QString &svgText, const QString &stylesText, const QRectF &boundsInPixels, qreal pixelsPerInch)
	upload the svg representation of text into the shape
bool	convertSvgToDocument (const QString &svgText, QTextDocument *doc)
	convertSvgToDocument
bool	convertToHtml (QString *htmlText)
	convertToHtml convert the text in the text shape to html
bool	convertToSvg (QString *svgText, QString *stylesText)
QStringList	errors () const
QTextFormat	formatDifference (QTextFormat test, QTextFormat reference)
	formatDifference A class to get the difference between two text-char formats.
	KoSvgTextShapeMarkupConverter (KoSvgTextShape *shape)
QString	style (QTextCharFormat format, QTextBlockFormat blockFormat, QTextCharFormat mostCommon=QTextCharFormat(), bool includeLineHeight=false)
	style creates a style string based on the blockformat and the format.
QStringList	warnings () const
	~KoSvgTextShapeMarkupConverter ()

Static Public Member Functions
static std::optional< double >	getInlineSize (const QTextFrameFormat &frameFormat)
	Get the inline-size from the frameFormat of the rootFrame of a QTextDocument.
static WrappingMode	getWrappingMode (const QTextFrameFormat &frameFormat)
	Get the Wrapping Mode from the frameFormat of the rootFrame of a QTextDocument.
static void	setInlineSize (QTextFrameFormat *frameFormat, double inlineSize)
	Set or unset the inline-size on a frameFormat to be applied to the rootFrame of a QTextDocument.
static void	setWrappingMode (QTextFrameFormat *frameFormat, WrappingMode wrappingMode)
	Set the Wrapping Mode on a frame format to be applied to the rootFrame of a QTextDocument.
static QVector< QTextFormat >	stylesFromString (QStringList styles, QTextCharFormat currentCharFormat, QTextBlockFormat currentBlockFormat, ExtraStyles &extraStyles)
	stylesFromString returns a qvector with two textformats: at 0 is the QTextCharFormat at 1 is the QTextBlockFormat

Static Public Attributes
static constexpr QTextFormat::Property	InlineSizeProperty
static constexpr QTextFormat::Property	WrappingModeProperty

Private Attributes
const QScopedPointer< Private >	d

Detailed Description

KoSvgTextShapeMarkupConverter is a utility class for converting a KoSvgTextShape to/from user-editable markup/svg representation.

Please note that the converted SVG is not the same as when saved into .kra! Some attributes are dropped to make the editing is easier for the user.

Definition at line 31 of file KoSvgTextShapeMarkupConverter.h.

Member Enumeration Documentation

WrappingMode

enum class KoSvgTextShapeMarkupConverter::WrappingMode

strong

The wrapping mode for the conversion between QTextDocument and SVG.

Enumerator
QtLegacy	Use the legacy conversion with line breaks performed by setting dy on <tspan> with offsets calculated from QTextLayout.
WhiteSpacePre	Use white-space: pre and output hard line-breaks in the SVG.
WhiteSpacePreWrap	Use white-space: pre-wrap and output hard line-breaks in the SVG. inline-size is also set to enable automatic wrapping.

Definition at line 147 of file KoSvgTextShapeMarkupConverter.h.

                            {
        QtLegacy = 0,
        WhiteSpacePre,
        WhiteSpacePreWrap,
    };

Constructor & Destructor Documentation

KoSvgTextShapeMarkupConverter()

KoSvgTextShapeMarkupConverter::KoSvgTextShapeMarkupConverter

(

KoSvgTextShape *

shape

)

Definition at line 71 of file KoSvgTextShapeMarkupConverter.cpp.

    : d(new Private(shape))
{
}

~KoSvgTextShapeMarkupConverter()

KoSvgTextShapeMarkupConverter::~KoSvgTextShapeMarkupConverter

(

)

Definition at line 76 of file KoSvgTextShapeMarkupConverter.cpp.

{
}

Member Function Documentation

convertDocumentToSvg()

bool KoSvgTextShapeMarkupConverter::convertDocumentToSvg	(	const QTextDocument *	doc,
		QString *	svgText )

convertDocumentToSvg

Parameters

doc	the QTextDocument to convert.
svgText	the converted svg text element

Returns

true if the conversion was successful

DIRTY-DIRTY-DIRTY HACK ALERT!!!

All the internals of QTextDocument work with the primary screen's DPI. That is, when we ask Qt about font metrics, it returns values scaled to the pixels in the current screen, that is, ptValue * qt_defaultDpi() / 72.0. We need to convert this value back into points before writing as SVG. Therefore, all the metrics returned by the document are scaled with fixQtDpi().

Official Qt's way to workaround this problem is to set logicalDpiX/Y() values on the paint device's associated with the document. But it seems like in our version of Qt (5.12.12, which is rather old) it doesn't work properly.

The alignment rule will be inverted while rendering the text in the text shape (according to the standard the alignment is defined not by "left" or "right", but by "start" and "end", which inverts for rtl text)

Definition at line 576 of file KoSvgTextShapeMarkupConverter.cpp.

{
    QBuffer svgBuffer;
    svgBuffer.open(QIODevice::WriteOnly);
 
    QXmlStreamWriter svgWriter(&svgBuffer);
 
    // disable auto-formatting to avoid extra spaces appearing here and there
    svgWriter.setAutoFormatting(false);
 
 
    qreal maxParagraphWidth = 0.0;
    QTextCharFormat mostCommonCharFormat;
    QTextBlockFormat mostCommonBlockFormat;
 
    struct LineInfo {
        LineInfo() {}
        LineInfo(QTextBlock _block, int _numSkippedLines)
            : block(_block), numSkippedLines(_numSkippedLines)
        {}
 
        QTextBlock block;
        int numSkippedLines = 0;
    };
 
    const WrappingMode wrappingMode = getWrappingMode(doc->rootFrame()->frameFormat());
 
    QVector<LineInfo> lineInfoList;
 
    {
        QTextBlock block = doc->begin();
 
        QList<QTextFormat> allCharFormats;
        QList<QTextFormat> allBlockFormats;
 
        int numSequentialEmptyLines = 0;
 
        bool hasExplicitTextWidth = false;
        if (wrappingMode == WrappingMode::WhiteSpacePreWrap) {
            // If the doc is pre-wrap, we expect the inline-size to be set.
            if (std::optional<double> inlineSize = getInlineSize(doc->rootFrame()->frameFormat())) {
                if (*inlineSize > 0.0) {
                    hasExplicitTextWidth = true;
                    maxParagraphWidth = *inlineSize;
                }
            }
        }
 
        while (block.isValid()) {
            if (wrappingMode != WrappingMode::QtLegacy || !block.text().trimmed().isEmpty()) {
                lineInfoList.append(LineInfo(block, numSequentialEmptyLines));
                numSequentialEmptyLines = 0;
 
                if (!hasExplicitTextWidth) {
                    maxParagraphWidth = qMax(maxParagraphWidth, calcLineWidth(block));
                }
 
                allBlockFormats.append(block.blockFormat());
                Q_FOREACH (const QTextLayout::FormatRange &range, block.textFormats()) {
                    QTextFormat format =  range.format;
                    allCharFormats.append(format);
                }
            } else {
                numSequentialEmptyLines++;
            }
 
            block = block.next();
        }
 
        mostCommonCharFormat = findMostCommonFormat(allCharFormats).toCharFormat();
        mostCommonBlockFormat = findMostCommonFormat(allBlockFormats).toBlockFormat();
    }
 
    //Okay, now the actual writing.
 
    QTextBlock block = doc->begin();
 
    svgWriter.writeStartElement("text");
 
    if (wrappingMode == WrappingMode::WhiteSpacePreWrap) {
        // There can only be one text direction for pre-wrap, so take that of
        // the first block.
        if (block.textDirection() == Qt::RightToLeft) {
            svgWriter.writeAttribute("direction", "rtl");
        }
    }
 
    {
        QString commonTextStyle = style(mostCommonCharFormat,
                                        mostCommonBlockFormat,
                                        {},
                                        /*includeLineHeight=*/wrappingMode != WrappingMode::QtLegacy);
        if (wrappingMode != WrappingMode::QtLegacy) {
            if (!commonTextStyle.isEmpty()) {
                commonTextStyle += "; ";
            }
            commonTextStyle += "white-space: pre";
            if (wrappingMode == WrappingMode::WhiteSpacePreWrap) {
                commonTextStyle += "-wrap;inline-size:";
                commonTextStyle += QString::number(maxParagraphWidth);
            }
        }
        if (!commonTextStyle.isEmpty()) {
            svgWriter.writeAttribute("style", commonTextStyle);
        }
    }
 
    // TODO: check if we should change into to float
    int prevBlockRelativeLineSpacing = mostCommonBlockFormat.lineHeight();
    int prevBlockLineType = mostCommonBlockFormat.lineHeightType();
    qreal prevBlockAscent = 0.0;
    qreal prevBlockDescent= 0.0;
 
    Q_FOREACH (const LineInfo &info, lineInfoList) {
        QTextBlock block = info.block;
 
        const QTextBlockFormat blockFormatDiff = formatDifference(block.blockFormat(), mostCommonBlockFormat).toBlockFormat();
        QTextCharFormat blockCharFormatDiff = QTextCharFormat();
        const QVector<QTextLayout::FormatRange> formats = block.textFormats();
        if (formats.size()==1) {
            blockCharFormatDiff = formatDifference(formats.at(0).format, mostCommonCharFormat).toCharFormat();
            if (wrappingMode == WrappingMode::WhiteSpacePreWrap) {
                // For pre-wrap, be extra sure we are not writing text-anchor
                // to the `tspan`s because they don't do anything.
                blockCharFormatDiff.clearProperty(QTextBlockFormat::BlockAlignment);
            }
        }
 
        const QTextLayout *layout = block.layout();
        const QTextLine line = layout->lineAt(0);
        if (!line.isValid()) {
            // This layout probably has no lines at all. This can happen when
            // wrappingMode != QtLegacy and the text doc is completely empty.
            // It is safe to just skip the line. Trying to get its metrics will
            // crash.
            continue;
        }
 
        svgWriter.writeStartElement("tspan");
 
        const QString text = block.text();
 
        bool isRightToLeft;
        switch (block.textDirection()) {
        case Qt::LeftToRight:
            isRightToLeft = false;
            break;
        case Qt::RightToLeft:
            isRightToLeft = true;
            break;
        case Qt::LayoutDirectionAuto:
        default:
            // QTextBlock::textDirection() is not supposed to return these,
            // but just in case...
            isRightToLeft = guessIsRightToLeft(text);;
            break;
        }
 
        if (isRightToLeft && wrappingMode != WrappingMode::WhiteSpacePreWrap) {
            svgWriter.writeAttribute("direction", "rtl");
            svgWriter.writeAttribute("unicode-bidi", "embed");
        }
 
        {
            const QString blockStyleString = style(blockCharFormatDiff,
                                                   blockFormatDiff,
                                                   {},
                                                   /*includeLineHeight=*/wrappingMode != WrappingMode::QtLegacy);
            if (!blockStyleString.isEmpty()) {
                svgWriter.writeAttribute("style", blockStyleString);
            }
        }
 
        if (wrappingMode != WrappingMode::WhiteSpacePreWrap) {
            Qt::Alignment blockAlignment = block.blockFormat().alignment();
            if (isRightToLeft) {
                if (blockAlignment & Qt::AlignLeft) {
                    blockAlignment &= ~Qt::AlignLeft;
                    blockAlignment |= Qt::AlignRight;
                } else if (blockAlignment & Qt::AlignRight) {
                    blockAlignment &= ~Qt::AlignRight;
                    blockAlignment |= Qt::AlignLeft;
                }
            }
 
            if (blockAlignment & Qt::AlignHCenter) {
                svgWriter.writeAttribute("x", KisDomUtils::toString(0.5 * maxParagraphWidth) + "pt");
            } else if (blockAlignment & Qt::AlignRight) {
                svgWriter.writeAttribute("x", KisDomUtils::toString(maxParagraphWidth) + "pt");
            } else {
                svgWriter.writeAttribute("x", "0");
            }
        }
 
        if (wrappingMode == WrappingMode::QtLegacy && block.blockNumber() > 0) {
            qreal lineHeightPt =
                    fixFromQtDpi(line.ascent()) - prevBlockAscent +
                    (prevBlockAscent + prevBlockDescent) * qreal(prevBlockRelativeLineSpacing) / 100.0;
 
            const qreal currentLineSpacing = (info.numSkippedLines + 1) * lineHeightPt;
            svgWriter.writeAttribute("dy", KisDomUtils::toString(currentLineSpacing) + "pt");
        }
 
        prevBlockRelativeLineSpacing =
                blockFormatDiff.hasProperty(QTextFormat::LineHeight) ?
                    blockFormatDiff.lineHeight() :
                    mostCommonBlockFormat.lineHeight();
 
        prevBlockLineType =
                blockFormatDiff.hasProperty(QTextFormat::LineHeightType) ?
                    blockFormatDiff.lineHeightType() :
                    mostCommonBlockFormat.lineHeightType();
 
        if (prevBlockLineType == QTextBlockFormat::SingleHeight) {
            //single line will set lineHeight to 100%
            prevBlockRelativeLineSpacing = 100;
        }
 
        prevBlockAscent = fixFromQtDpi(line.ascent());
        prevBlockDescent = fixFromQtDpi(line.descent());
 
 
        if (formats.size()>1) {
            QStringList texts;
            QVector<QTextCharFormat> charFormats;
            for (int f=0; f<formats.size(); f++) {
                QString chunk;
                for (int c = 0; c<formats.at(f).length; c++) {
                    chunk.append(text.at(formats.at(f).start+c));
                }
                texts.append(chunk);
                charFormats.append(formats.at(f).format);
            }
 
            for (int c = 0; c<texts.size(); c++) {
                QTextCharFormat diff = formatDifference(charFormats.at(c), mostCommonCharFormat).toCharFormat();
                const QString subStyle = style(diff, QTextBlockFormat(), mostCommonCharFormat);
                if (!subStyle.isEmpty()) {
                    svgWriter.writeStartElement("tspan");
                    svgWriter.writeAttribute("style", subStyle);
                    svgWriter.writeCharacters(texts.at(c));
                    svgWriter.writeEndElement();
                } else {
                    svgWriter.writeCharacters(texts.at(c));
                }
            }
 
        } else {
            svgWriter.writeCharacters(text);
            //check format against
        }
 
        // Add line-breaks for `pre` modes, but not for the final line.
        if (wrappingMode != WrappingMode::QtLegacy && &info != &lineInfoList.constLast()) {
            svgWriter.writeCharacters(QLatin1String("\n"));
        }
        svgWriter.writeEndElement();
    }
    svgWriter.writeEndElement();//text root element.
 
    if (svgWriter.hasError()) {
        d->errors << i18n("Unknown error writing SVG text element");
        return false;
    }
    *svgText = QString::fromUtf8(svgBuffer.data()).trimmed();
    return true;
}

References calcLineWidth(), d, findMostCommonFormat(), fixFromQtDpi(), formatDifference(), getInlineSize(), getWrappingMode(), guessIsRightToLeft(), length(), QtLegacy, style(), KisDomUtils::toString(), and WhiteSpacePreWrap.

convertFromHtml()

bool KoSvgTextShapeMarkupConverter::convertFromHtml	(	const QString &	htmlText,
		QString *	svgText,
		QString *	styles )

convertFromHtml converted Qt rich text html (and no other: https://doc.qt.io/qt-5/richtext-html-subset.html) to SVG

Parameters

htmlText	the input html
svgText	the converted svg text element
styles

Returns

true if the conversion was successful

Definition at line 196 of file KoSvgTextShapeMarkupConverter.cpp.

{
 
    debugFlake << ">>>>>>>>>>>" << htmlText;
 
    QBuffer svgBuffer;
    svgBuffer.open(QIODevice::WriteOnly);
 
    QXmlStreamReader htmlReader(htmlText);
    QXmlStreamWriter svgWriter(&svgBuffer);
 
    svgWriter.setAutoFormatting(false);
#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
    QStringRef elementName;
#else
    QStringView elementName;
#endif
 
    bool newLine = false;
    int lineCount = 0;
    QString bodyEm = "1em";
    QString em;
    QString p("p");
    //previous style string is for keeping formatting proper on linebreaks and appendstyle is for specific tags
    QString previousStyleString;
    QString appendStyle;
    bool firstElement = true;
 
    while (!htmlReader.atEnd()) {
        QXmlStreamReader::TokenType token = htmlReader.readNext();
        QLatin1String elName = firstElement? QLatin1String("text"): QLatin1String("tspan");
        switch (token) {
        case QXmlStreamReader::StartElement:
        {
            newLine = false;
            if (htmlReader.name() == "br") {
                debugFlake << "\tdoing br";
                svgWriter.writeEndElement();
#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
                elementName = QStringRef(&p);
#else
                elementName = QStringView(p);
#endif
                em = bodyEm;
                appendStyle = previousStyleString;
            }
            else {
                elementName = htmlReader.name();
                em = "";
            }
 
            if (elementName == "body") {
                debugFlake << "\tstart Element" << elementName;
                svgWriter.writeStartElement(elName);
                firstElement = false;
                appendStyle = QString();
            }
            else if (elementName == "p") {
                // new line
                debugFlake << "\t\tstart Element" << elementName;
                svgWriter.writeStartElement(elName);
                firstElement = false;
                newLine = true;
                if (em.isEmpty()) {
                    em = bodyEm;
                    appendStyle = QString();
                }
                lineCount++;
            }
            else if (elementName == "span") {
                debugFlake << "\tstart Element" << elementName;
                svgWriter.writeStartElement(elName);
                firstElement = false;
                appendStyle = QString();
            }
            else if (elementName == "b" || elementName == "strong") {
                debugFlake << "\tstart Element" << elementName;
                svgWriter.writeStartElement(elName);
                firstElement = false;
                appendStyle = "font-weight:700;";
            }
            else if (elementName == "i" || elementName == "em") {
                debugFlake << "\tstart Element" << elementName;
                svgWriter.writeStartElement(elName);
                firstElement = false;
                appendStyle = "font-style:italic;";
            }
            else if (elementName == "u") {
                debugFlake << "\tstart Element" << elementName;
                svgWriter.writeStartElement(elName);
                firstElement = false;
                appendStyle = "text-decoration:underline";
            }
            else if (elementName == "font") {
                debugFlake << "\tstart Element" << elementName;
                svgWriter.writeStartElement(elName);
                firstElement = false;
                appendStyle = QString();
                if (htmlReader.attributes().hasAttribute("color")) {
                    svgWriter.writeAttribute("fill", htmlReader.attributes().value("color").toString());
                }
            }
            else if (elementName == "pre") {
                debugFlake << "\tstart Element" << elementName;
                svgWriter.writeStartElement(elName);
                firstElement = false;
                appendStyle = "white-space:pre";
            }
 
            QXmlStreamAttributes attributes = htmlReader.attributes();
 
            QString textAlign;
            if (attributes.hasAttribute("align")) {
                textAlign = attributes.value("align").toString();
            }
 
            if (attributes.hasAttribute("style")) {
                QString filteredStyles;
                QStringList svgStyles = QString("font-family font-size font-weight font-variant word-spacing text-decoration font-style font-size-adjust font-stretch direction letter-spacing").split(" ");
                QStringList styles = attributes.value("style").toString().split(";");
                for(int i=0; i<styles.size(); i++) {
                    QStringList style = QString(styles.at(i)).split(":");
                    debugFlake<<style.at(0);
                    if (svgStyles.contains(QString(style.at(0)).trimmed())) {
                        filteredStyles.append(styles.at(i)+";");
                    }
 
                    if (QString(style.at(0)).trimmed() == "color") {
                        filteredStyles.append(" fill:"+style.at(1)+";");
                    }
 
                    if (QString(style.at(0)).trimmed() == "text-align") {
                        textAlign = QString(style.at(1)).trimmed();
                    }
 
                    if (QString(style.at(0)).trimmed() == "line-height"){
                        if (style.at(1).contains("%")) {
                            double percentage = QString(style.at(1)).remove("%").toDouble();
                            em = QString::number(percentage/100.0)+"em";
                        } else if(style.at(1).contains("em")) {
                            em = style.at(1);
                        } else if(style.at(1).contains("px")) {
                            em = style.at(1);
                        }
                        if (elementName == "body") {
                            bodyEm = em;
                        }
                    }
                }
 
                if (textAlign == "center") {
                    filteredStyles.append(" text-anchor:middle;");
                } else if (textAlign == "right") {
                    filteredStyles.append(" text-anchor:end;");
                } else if (textAlign == "left"){
                    filteredStyles.append(" text-anchor:start;");
                }
 
                filteredStyles.append(appendStyle);
 
                if (!filteredStyles.isEmpty()) {
                    svgWriter.writeAttribute("style", filteredStyles);
                    previousStyleString = filteredStyles;
                }
 
 
            }
            if (newLine && lineCount > 1) {
                debugFlake << "\t\tAdvancing to the next line";
                svgWriter.writeAttribute("x", "0");
                svgWriter.writeAttribute("dy", em);
            }
            break;
        }
        case QXmlStreamReader::EndElement:
        {
            if (htmlReader.name() == "br") break;
            if (elementName == "p" || elementName == "span" || elementName == "body") {
                debugFlake << "\tEndElement" <<  htmlReader.name() << "(" << elementName << ")";
                svgWriter.writeEndElement();
            }
            break;
        }
        case QXmlStreamReader::Characters:
        {
            if (elementName == "style") {
                *styles = htmlReader.text().toString();
            }
            else {
                //TODO: Think up what to do with mix of pretty-print and <BR> (what libreoffice uses).
                //if (!htmlReader.isWhitespace()) {
                    debugFlake << "\tCharacters:" << htmlReader.text();
                    svgWriter.writeCharacters(htmlReader.text().toString());
                //}
            }
            break;
        }
        default:
            ;
        }
    }
 
    if (htmlReader.hasError()) {
        d->errors << htmlReader.errorString();
        return false;
    }
    if (svgWriter.hasError()) {
        d->errors << i18n("Unknown error writing SVG text element");
        return false;
    }
 
    *svgText = QString::fromUtf8(svgBuffer.data());
    return true;
}

References d, debugFlake, p, and style().

convertFromSvg()

bool KoSvgTextShapeMarkupConverter::convertFromSvg	(	const QString &	svgText,
		const QString &	stylesText,
		const QRectF &	boundsInPixels,
		qreal	pixelsPerInch )

upload the svg representation of text into the shape

Parameters

svgText	<text> part of SVG
stylesText	<defs> part of SVG (used only for gradients and patterns)
boundsInPixels	bounds of the entire image in pixel. Used for parsing percentage units.
pixelsPerInch	resolution of the image where we load the shape to

Returns

true if the text was parsed successfully. Check errors() and warnings() for details.

Definition at line 111 of file KoSvgTextShapeMarkupConverter.cpp.

{
 
    debugFlake << "convertFromSvg. text:" << svgText << "styles:" << stylesText << "bounds:" << boundsInPixels << "ppi:" << pixelsPerInch;
 
    d->clearErrors();
 
    QString errorMessage;
    int errorLine = 0;
    int errorColumn = 0;
 
    const QString fullText = QString("<svg>\n%1\n%2\n</svg>\n").arg(stylesText).arg(svgText);
 
    QDomDocument doc = SvgParser::createDocumentFromSvg(fullText, &errorMessage, &errorLine, &errorColumn);
    if (doc.isNull()) {
        d->errors << QString("line %1, col %2: %3").arg(errorLine).arg(errorColumn).arg(errorMessage);
        return false;
    }
 
    KoDocumentResourceManager resourceManager;
    SvgParser parser(&resourceManager);
    parser.setResolution(boundsInPixels, pixelsPerInch);
 
    QDomElement root = doc.documentElement();
    QDomNode node = root.firstChild();
 
    bool textNodeFound = false;
 
    for (; !node.isNull(); node = node.nextSibling()) {
        QDomElement el = node.toElement();
        if (el.isNull()) continue;
 
        if (el.tagName() == "defs") {
            parser.parseDefsElement(el);
        }
        else if (el.tagName() == "text") {
            if (textNodeFound) {
                d->errors << i18n("More than one 'text' node found!");
                return false;
            }
 
            KoShape *shape = parser.parseTextElement(el, d->shape);
            KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(shape == d->shape, false);
            textNodeFound = true;
            break;
        } else {
            d->errors << i18n("Unknown node of type \'%1\' found!", el.tagName());
            return false;
        }
    }
 
    if (!textNodeFound) {
        d->errors << i18n("No \'text\' node found!");
        return false;
    }
 
    return true;
 
}

References SvgParser::createDocumentFromSvg(), d, debugFlake, KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE, SvgParser::parseDefsElement(), SvgParser::parseTextElement(), and SvgParser::setResolution().

convertSvgToDocument()

bool KoSvgTextShapeMarkupConverter::convertSvgToDocument	(	const QString &	svgText,
		QTextDocument *	doc )

convertSvgToDocument

Parameters

svgText	the <text> element and it's children as a string.
doc	the QTextDocument that the conversion is written to.

Returns

true if the conversion was successful

Definition at line 908 of file KoSvgTextShapeMarkupConverter.cpp.

{
    QXmlStreamReader svgReader(svgText.trimmed());
    doc->clear();
    QTextCursor cursor(doc);
 
    struct BlockFormatRecord {
        BlockFormatRecord() {}
        BlockFormatRecord(QTextBlockFormat _blockFormat,
                          QTextCharFormat _charFormat)
            : blockFormat(_blockFormat),
              charFormat(_charFormat)
        {}
 
        QTextBlockFormat blockFormat;
        QTextCharFormat charFormat;
    };
 
    QStack<BlockFormatRecord> formatStack;
    formatStack.push(BlockFormatRecord(QTextBlockFormat(), QTextCharFormat()));
    cursor.setCharFormat(formatStack.top().charFormat);
    cursor.setBlockFormat(formatStack.top().blockFormat);
 
    qreal currBlockAbsoluteLineOffset = 0.0;
    int prevBlockCursorPosition = -1;
    Qt::Alignment prevBlockAlignment = Qt::AlignLeft;
    bool prevTspanHasTrailingLF = false;
    qreal prevLineDescent = 0.0;
    qreal prevLineAscent = 0.0;
    // work around uninitialized memory warning, therefore, no boost::none
    boost::optional<qreal> previousBlockAbsoluteXOffset =
        boost::optional<qreal>(false, qreal());
 
    std::optional<ExtraStyles> docExtraStyles;
 
    while (!svgReader.atEnd()) {
        QXmlStreamReader::TokenType token = svgReader.readNext();
        switch (token) {
        case QXmlStreamReader::StartElement:
        {
            prevTspanHasTrailingLF = false;
 
            bool newBlock = false;
            QTextBlockFormat newBlockFormat;
            QTextCharFormat newCharFormat;
            qreal absoluteLineOffset = 1.0;
 
            // fetch format of the parent block and make it default
            if (!formatStack.empty()) {
                newBlockFormat = formatStack.top().blockFormat;
                newCharFormat = formatStack.top().charFormat;
            }
 
            {
                ExtraStyles extraStyles{};
                const QXmlStreamAttributes elementAttributes = svgReader.attributes();
                parseTextAttributes(elementAttributes, newCharFormat, newBlockFormat, extraStyles);
 
                if (!docExtraStyles && svgReader.name() == QLatin1String("text")) {
                    if (extraStyles.inlineSize > 0.0) {
                        // There is a valid inline-size, forcing pre-wrap mode.
                        extraStyles.wrappingMode = WrappingMode::WhiteSpacePreWrap;
                    } else if (extraStyles.wrappingMode == WrappingMode::WhiteSpacePreWrap && extraStyles.inlineSize <= 0.0) {
                        // Without a valid inline-size, there is no point using
                        // pre-wrap, so change to pre.
                        extraStyles.wrappingMode = WrappingMode::WhiteSpacePre;
                    }
                    docExtraStyles = extraStyles;
                }
 
                // For WrappingMode::QtLegacy,
                // mnemonic for a newline is (dy != 0 && (x == prevX || alignmentChanged))
 
                // work around uninitialized memory warning, therefore, no
                // boost::none
                boost::optional<qreal> blockAbsoluteXOffset =
                    boost::make_optional(false, qreal());
 
                if (elementAttributes.hasAttribute("x")) {
                    QString xString = elementAttributes.value("x").toString();
                    if (xString.contains("pt")) {
                        xString = xString.remove("pt").trimmed();
                    }
                    blockAbsoluteXOffset = fixToQtDpi(KisDomUtils::toDouble(xString));
                }
 
                // Get current text alignment: If current block has alignment,
                // use it. Otherwise, try to inherit from parent block.
                Qt::Alignment thisBlockAlignment = Qt::AlignLeft;
                if (newBlockFormat.hasProperty(QTextBlockFormat::BlockAlignment)) {
                    thisBlockAlignment = newBlockFormat.alignment();
                } else if (!formatStack.empty()) {
                    thisBlockAlignment = formatStack.top().blockFormat.alignment();
                }
 
                const auto isSameXOffset = [&]() {
                    return previousBlockAbsoluteXOffset && blockAbsoluteXOffset
                        && qFuzzyCompare(*previousBlockAbsoluteXOffset, *blockAbsoluteXOffset);
                };
                if ((isSameXOffset() || thisBlockAlignment != prevBlockAlignment) && svgReader.name() != "text"
                    && elementAttributes.hasAttribute("dy")) {
 
                    QString dyString = elementAttributes.value("dy").toString();
                    if (dyString.contains("pt")) {
                        dyString = dyString.remove("pt").trimmed();
                    }
 
                    KIS_SAFE_ASSERT_RECOVER_NOOP(formatStack.isEmpty() == (svgReader.name() == "text"));
 
                    absoluteLineOffset = fixToQtDpi(KisDomUtils::toDouble(dyString));
                    newBlock = absoluteLineOffset > 0;
                }
 
                if (elementAttributes.hasAttribute("x")) {
                    previousBlockAbsoluteXOffset = blockAbsoluteXOffset;
                }
                prevBlockAlignment = thisBlockAlignment;
            }
 
            //hack
            doc->setTextWidth(100);
            doc->setTextWidth(-1);
 
            if (newBlock && absoluteLineOffset > 0) {
                KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(!formatStack.isEmpty(), false);
                KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(cursor.block().layout()->lineCount() > 0, false);
 
                QTextLine line = cursor.block().layout()->lineAt(0);
 
                if (prevBlockCursorPosition >= 0) {
                    postCorrectBlockHeight(doc, line.ascent(), prevLineAscent, prevLineDescent,
                                           prevBlockCursorPosition, currBlockAbsoluteLineOffset);
                }
 
                prevBlockCursorPosition = cursor.position();
                prevLineAscent  = line.ascent();
                prevLineDescent = line.descent();
                currBlockAbsoluteLineOffset = absoluteLineOffset;
 
                cursor.insertBlock();
                cursor.setCharFormat(formatStack.top().charFormat);
                cursor.setBlockFormat(formatStack.top().blockFormat);
            }
 
            cursor.mergeCharFormat(newCharFormat);
            cursor.mergeBlockFormat(newBlockFormat);
 
            formatStack.push(BlockFormatRecord(cursor.blockFormat(), cursor.charFormat()));
 
            break;
        }
        case QXmlStreamReader::EndElement:
        {
            if (svgReader.name() != "text") {
                formatStack.pop();
                KIS_SAFE_ASSERT_RECOVER(!formatStack.isEmpty()) { break; }
 
                cursor.setCharFormat(formatStack.top().charFormat);
                // For legacy wrapping mode, don't reset block format here
                // because this will break the block formats of the current
                // (last) block. The latest block format will be applied when
                // creating a new block.
                // However, resetting the block format is required for pre/pre-
                // wrap modes because they do not trigger the same code that
                // creates the new block; these modes rely on a trailing `\n`
                // at the end of a tspan to start a new block. At this point, if
                // there was indeed a trailing `\n`, this means we are already
                // in a new block.
                if (docExtraStyles && docExtraStyles->wrappingMode != WrappingMode::QtLegacy
                    && prevTspanHasTrailingLF) {
                    cursor.setBlockFormat(formatStack.top().blockFormat);
                }
                prevTspanHasTrailingLF = false;
            }
            break;
        }
        case QXmlStreamReader::Characters:
        {
            cursor.insertText(svgReader.text().toString());
            prevTspanHasTrailingLF = svgReader.text().endsWith('\n');
            break;
        }
        default:
            break;
        }
    }
 
    if (prevBlockCursorPosition >= 0) {
        QTextLine line = cursor.block().layout()->lineAt(0);
        postCorrectBlockHeight(doc, line.ascent(), prevLineAscent, prevLineDescent,
                               prevBlockCursorPosition, currBlockAbsoluteLineOffset);
    }
 
    {
        if (!docExtraStyles) {
            docExtraStyles = ExtraStyles{};
        }
        QTextFrameFormat f = doc->rootFrame()->frameFormat();
        setWrappingMode(&f, docExtraStyles->wrappingMode);
        setInlineSize(&f, docExtraStyles->inlineSize);
        doc->rootFrame()->setFrameFormat(f);
    }
 
    if (svgReader.hasError()) {
        d->errors << svgReader.errorString();
        return false;
    }
    doc->setModified(false);
    return true;
}

References d, fixToQtDpi(), KIS_SAFE_ASSERT_RECOVER, KIS_SAFE_ASSERT_RECOVER_NOOP, KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE, parseTextAttributes(), postCorrectBlockHeight(), qFuzzyCompare(), QtLegacy, setInlineSize(), setWrappingMode(), KisDomUtils::toDouble(), WhiteSpacePre, and WhiteSpacePreWrap.

convertToHtml()

bool KoSvgTextShapeMarkupConverter::convertToHtml

(

QString *

htmlText

)

convertToHtml convert the text in the text shape to html

Parameters

htmlText

will be filled with correct html representing the text in the shape

Returns

true on success

Definition at line 172 of file KoSvgTextShapeMarkupConverter.cpp.

{
    d->clearErrors();
 
    QBuffer shapesBuffer;
    shapesBuffer.open(QIODevice::WriteOnly);
    {
        HtmlWriter writer({d->shape});
        if (!writer.save(shapesBuffer)) {
            d->errors = writer.errors();
            d->warnings = writer.warnings();
            return false;
        }
    }
 
    shapesBuffer.close();
 
    *htmlText = QString(shapesBuffer.data());
 
    debugFlake << "\t\t" << *htmlText;
 
    return true;
}

References d, debugFlake, and HtmlWriter::errors().

convertToSvg()

bool KoSvgTextShapeMarkupConverter::convertToSvg	(	QString *	svgText,
		QString *	stylesText )

Convert the text shape into two strings: text and styles. Styles string is non-empty only when the text has some gradient/pattern attached. It is intended to be places into a separate tab in the GUI.

Returns

true on success

Definition at line 85 of file KoSvgTextShapeMarkupConverter.cpp.

{
    d->clearErrors();
 
    QBuffer shapesBuffer;
    QBuffer stylesBuffer;
 
    shapesBuffer.open(QIODevice::WriteOnly);
    stylesBuffer.open(QIODevice::WriteOnly);
 
    {
        SvgSavingContext savingContext(shapesBuffer, stylesBuffer);
        savingContext.setStrippedTextMode(true);
        SvgWriter writer({d->shape});
        writer.saveDetached(savingContext);
    }
 
    shapesBuffer.close();
    stylesBuffer.close();
 
    *svgText = QString::fromUtf8(shapesBuffer.data());
    *stylesText = QString::fromUtf8(stylesBuffer.data());
 
    return true;
}

References d, SvgWriter::saveDetached(), and SvgSavingContext::setStrippedTextMode().

errors()

QStringList KoSvgTextShapeMarkupConverter::errors

(

)

const

A list of errors happened during loading the user's text

Definition at line 1121 of file KoSvgTextShapeMarkupConverter.cpp.

{
    return d->errors;
}

References d.

formatDifference()

QTextFormat KoSvgTextShapeMarkupConverter::formatDifference	(	QTextFormat	test,
		QTextFormat	reference )

formatDifference A class to get the difference between two text-char formats.

Parameters

test	the format to test
reference	the format to test against.

Returns

the difference between the two.

Definition at line 1679 of file KoSvgTextShapeMarkupConverter.cpp.

{
    //copied from QTextDocument.cpp
    QTextFormat diff = test;
    //props should proly compare itself to the main text format...
    const QMap<int, QVariant> props = reference.properties();
    for (QMap<int, QVariant>::ConstIterator it = props.begin(), end = props.end();
         it != end; ++it)
        if (it.value() == test.property(it.key())) {
            // Some props must not be removed as default state gets in the way.
            switch (it.key()) {
            case QTextFormat::TextUnderlineStyle: // 0x2023
            case QTextFormat::FontLetterSpacingType: // 0x2033 in Qt5, but is 0x1FE9 in Qt6
            case QTextFormat::LineHeightType:
                continue;
            }
            diff.clearProperty(it.key());
        }
    return diff;
}

getInlineSize()

std::optional< double > KoSvgTextShapeMarkupConverter::getInlineSize ( const QTextFrameFormat & frameFormat )

static

Get the inline-size from the frameFormat of the rootFrame of a QTextDocument.

Parameters

frameFormat

Returns

std::optional<double> the inline-size if set, or std::nullopt

Definition at line 1715 of file KoSvgTextShapeMarkupConverter.cpp.

{
    const QVariant inlineSize = frameFormat.property(InlineSizeProperty);
    if (inlineSize.userType() != QMetaType::Double) {
        return {};
    }
    const double val = inlineSize.toDouble();
    if (val > 0.0) {
        return {val};
    }
    return {};
}

References InlineSizeProperty.

getWrappingMode()

KoSvgTextShapeMarkupConverter::WrappingMode KoSvgTextShapeMarkupConverter::getWrappingMode ( const QTextFrameFormat & frameFormat )

static

Get the Wrapping Mode from the frameFormat of the rootFrame of a QTextDocument.

Parameters

frameFormat

Returns

WrappingMode if set, or the default value WrappingMode::QtLegacy

Definition at line 1701 of file KoSvgTextShapeMarkupConverter.cpp.

{
    const QVariant wrappingMode = frameFormat.property(WrappingModeProperty);
    if (wrappingMode.userType() != QMetaType::Int) {
        return WrappingMode::QtLegacy;
    }
    return static_cast<WrappingMode>(wrappingMode.toInt());
}

References QtLegacy, and WrappingModeProperty.

setInlineSize()

void KoSvgTextShapeMarkupConverter::setInlineSize ( QTextFrameFormat * frameFormat, double inlineSize )

static

Set or unset the inline-size on a frameFormat to be applied to the rootFrame of a QTextDocument.

Parameters

frameFormat	pointer to the frameFormat to be modified
inlineSize	the inline-size; pass a negative value to unset the property

Definition at line 1728 of file KoSvgTextShapeMarkupConverter.cpp.

{
    if (inlineSize >= 0.0) {
        frameFormat->setProperty(InlineSizeProperty, inlineSize);
    } else {
        frameFormat->clearProperty(InlineSizeProperty);
    }
}

References InlineSizeProperty.

setWrappingMode()

void KoSvgTextShapeMarkupConverter::setWrappingMode ( QTextFrameFormat * frameFormat, WrappingMode wrappingMode )

static

Set the Wrapping Mode on a frame format to be applied to the rootFrame of a QTextDocument.

Parameters

frameFormat	pointer to the franeFormat to be modified
wrappingMode

Definition at line 1710 of file KoSvgTextShapeMarkupConverter.cpp.

{
    frameFormat->setProperty(WrappingModeProperty, static_cast<int>(wrappingMode));
}

References WrappingModeProperty.

style()

QString KoSvgTextShapeMarkupConverter::style	(	QTextCharFormat	format,
		QTextBlockFormat	blockFormat,
		QTextCharFormat	mostCommon = QTextCharFormat(),
		bool	includeLineHeight = false )

style creates a style string based on the blockformat and the format.

Parameters

format	the textCharFormat of the current text.
blockFormat	the block format of the current text.
mostCommon	the most common format to compare the format to.
includeLineHeight	whether the style should include line-height.

Returns

a string that can be written into a style element.

Definition at line 1174 of file KoSvgTextShapeMarkupConverter.cpp.

{
    QStringList style;
    for(int i=0; i<format.properties().size(); i++) {
        QString c;
        int propertyId = format.properties().keys().at(i);
 
        if (propertyId == QTextCharFormat::FontFamily) {
            const QString fontFamily = format.properties()[propertyId].toString();
            c.append("font-family").append(":").append(fontFamily);
        }
        if (propertyId == QTextCharFormat::FontPointSize ||
            propertyId == QTextCharFormat::FontPixelSize) {
 
            // in Krita we unify point size and pixel size of the font
 
            c.append("font-size").append(":")
                    .append(format.properties()[propertyId].toString());
        }
        if (propertyId == QTextCharFormat::FontWeight) {
            // Convert from QFont::Weight range to SVG range,
            // as defined in qt's qfont.h
            int convertedWeight = 400; // Defaulting to Weight::Normal in svg scale
 
            switch (format.properties()[propertyId].toInt()) {
                case QFont::Weight::Thin:
                    convertedWeight = 100;
                    break;
                case QFont::Weight::ExtraLight:
                    convertedWeight = 200;
                    break;
                case QFont::Weight::Light:
                    convertedWeight = 300;
                    break;
                case QFont::Weight::Normal:
                    convertedWeight = 400;
                    break;
                case QFont::Weight::Medium:
                    convertedWeight = 500;
                    break;
                case QFont::Weight::DemiBold:
                    convertedWeight = 600;
                    break;
                case QFont::Weight::Bold:
                    convertedWeight = 700;
                    break;
                case QFont::Weight::ExtraBold:
                    convertedWeight = 800;
                    break;
                case QFont::Weight::Black:
                    convertedWeight = 900;
                    break;
                default:
                    warnFile << "WARNING: Invalid QFont::Weight value supplied to KoSvgTextShapeMarkupConverter::style.";
                    break;
            }
 
            c.append("font-weight").append(":")
                    .append(QString::number(convertedWeight));
        }
        if (propertyId == QTextCharFormat::FontItalic) {
            QString val = "italic";
            if (!format.fontItalic()) {
                val = "normal";
            }
            c.append("font-style").append(":")
                    .append(val);
        }
 
        if (propertyId == QTextCharFormat::FontCapitalization) {
            if (format.fontCapitalization() == QFont::SmallCaps){
                c.append("font-variant").append(":")
                        .append("small-caps");
            } else if (format.fontCapitalization() == QFont::AllUppercase) {
                c.append("text-transform").append(":")
                        .append("uppercase");
            } else if (format.fontCapitalization() == QFont::AllLowercase) {
                c.append("text-transform").append(":")
                        .append("lowercase");
            } else if (format.fontCapitalization() == QFont::Capitalize) {
                c.append("text-transform").append(":")
                        .append("capitalize");
            }
        }
 
        if (propertyId == QTextCharFormat::FontStretch) {
            QString valueString = QString::number(format.fontStretch(), 10);
            if (format.fontStretch() == QFont::ExtraCondensed) {
                valueString = "extra-condensed";
            } else if (format.fontStretch() == QFont::SemiCondensed) {
                valueString = "semi-condensed";
            } else if (format.fontStretch() == QFont::Condensed) {
                valueString = "condensed";
            } else if (format.fontStretch() == QFont::AnyStretch) {
                valueString = "normal";
            } else if (format.fontStretch() == QFont::Expanded) {
                valueString = "expanded";
            } else if (format.fontStretch() == QFont::SemiExpanded) {
                valueString = "semi-expanded";
            }  else if (format.fontStretch() == QFont::ExtraExpanded) {
                valueString = "extra-expanded";
            }  else if (format.fontStretch() == QFont::UltraExpanded) {
                valueString = "ultra-expanded";
            }
            c.append("font-stretch").append(":")
                    .append(valueString);
        }
        if (propertyId == QTextCharFormat::FontKerning) {
            QString val;
            if (format.fontKerning()) {
                val = "auto";
            } else {
                val = "0";
            }
            c.append("kerning").append(":")
                    .append(val);
        }
        if (propertyId == QTextCharFormat::FontWordSpacing) {
            c.append("word-spacing").append(":")
                    .append(QString::number(format.fontWordSpacing()));
        }
        if (propertyId == QTextCharFormat::FontLetterSpacing) {
            QString val;
            if (format.fontLetterSpacingType()==QFont::AbsoluteSpacing) {
                val = QString::number(format.fontLetterSpacing());
            } else {
                val = QString::number(((format.fontLetterSpacing()/100)*format.fontPointSize()));
            }
            c.append("letter-spacing").append(":")
                    .append(val);
        }
        if (propertyId == QTextCharFormat::TextOutline) {
            if (format.textOutline().color() != mostCommon.textOutline().color()) {
                c.append("stroke").append(":")
                        .append(format.textOutline().color().name());
                style.append(c);
                c.clear();
            }
            if (format.textOutline().width() != mostCommon.textOutline().width()) {
                c.append("stroke-width").append(":")
                        .append(QString::number(format.textOutline().width()));
            }
        }
 
 
        if (propertyId == QTextCharFormat::TextVerticalAlignment) {
            QString val = "baseline";
            if (format.verticalAlignment() == QTextCharFormat::AlignSubScript) {
                val = QLatin1String("sub");
            }
            else if (format.verticalAlignment() == QTextCharFormat::AlignSuperScript) {
                val = QLatin1String("super");
            }
            c.append("baseline-shift").append(":").append(val);
        }
 
        if (propertyId == QTextCharFormat::ForegroundBrush) {
            QColor::NameFormat colorFormat;
 
            if (format.foreground().color().alphaF() < 1.0) {
                colorFormat = QColor::HexArgb;
            } else {
                colorFormat = QColor::HexRgb;
            }
 
            c.append("fill").append(":")
                    .append(format.foreground().color().name(colorFormat));
        }
 
        if (!c.isEmpty()) {
            style.append(c);
        }
    }
 
    if (!compareFormatUnderlineWithMostCommon(format, mostCommon)) {
 
        QString c = convertFormatUnderlineToSvg(format);
        if (!c.isEmpty()) {
            style.append(c);
        }
    }
 
    if (blockFormat.hasProperty(QTextBlockFormat::BlockAlignment)) {
        // TODO: Alignment works incorrectly! The offsets should be calculated
        //       according to the shape width/height!
 
        QString c;
        QString val;
        if (blockFormat.alignment()==Qt::AlignRight) {
            val = "end";
        } else if (blockFormat.alignment()==Qt::AlignCenter) {
            val = "middle";
        } else {
            val = "start";
        }
        c.append("text-anchor").append(":")
                .append(val);
        if (!c.isEmpty()) {
            style.append(c);
        }
    }
 
    if (includeLineHeight && blockFormat.hasProperty(QTextBlockFormat::LineHeight)) {
        double h = 0;
        if (blockFormat.lineHeightType() == QTextBlockFormat::ProportionalHeight) {
            h = blockFormat.lineHeight() / 100.0;
        } else if (blockFormat.lineHeightType() == QTextBlockFormat::SingleHeight) {
            h = -1.0;
        }
        QString c = "line-height:";
        if (h >= 0) {
            c += QString::number(blockFormat.lineHeight() / 100.0);
        } else {
            c += "normal";
        }
        style.append(c);
    }
 
    return style.join("; ");
}

References compareFormatUnderlineWithMostCommon(), convertFormatUnderlineToSvg(), style(), and warnFile.

stylesFromString()

QVector< QTextFormat > KoSvgTextShapeMarkupConverter::stylesFromString ( QStringList styles, QTextCharFormat currentCharFormat, QTextBlockFormat currentBlockFormat, ExtraStyles & extraStyles )

static

stylesFromString returns a qvector with two textformats: at 0 is the QTextCharFormat at 1 is the QTextBlockFormat

Parameters

	styles	a style string split at ";"
	currentCharFormat	the current charformat to compare against.
	currentBlockFormat	the current blockformat to compare against.
[out]	extraStyles	other styles.

Returns

A QVector with at 0 a QTextCharFormat and at 1 a QBlockCharFormat.

Definition at line 1398 of file KoSvgTextShapeMarkupConverter.cpp.

{
    Q_UNUSED(currentBlockFormat);
 
    QVector<QTextFormat> formats;
    QTextCharFormat charFormat;
    charFormat.setTextOutline(currentCharFormat.textOutline());
    QTextBlockFormat blockFormat;
    QScopedPointer<SvgGraphicsContext> context(new SvgGraphicsContext());
    const KoSvgTextProperties resolved = KoSvgTextProperties::defaultProperties();
 
    for (int i=0; i<styles.size(); i++) {
        if (!styles.at(i).isEmpty()){
            QStringList style = styles.at(i).split(":");
            // ignore the property instead of crashing,
            // if user forgets to separate property name and value with ':'.
            if (style.size() < 2) {
                continue;
            }
 
            QString property = style.at(0).trimmed();
            QString value = style.at(1).trimmed();
 
            if (property == "font-family") {
                charFormat.setFontFamily(value);
            }
 
            if (property == "font-size") {
                qreal val = SvgUtil::parseUnitX(context.data(), resolved, value);
                charFormat.setFontPointSize(val);
            }
 
            if (property == "font-variant") {
                if (value=="small-caps") {
                    charFormat.setFontCapitalization(QFont::SmallCaps);
                } else {
                    charFormat.setFontCapitalization(QFont::MixedCase);
                }
            }
 
            if (property == "font-style") {
                if (value=="italic" || value=="oblique") {
                    charFormat.setFontItalic(true);
                } else {
                    charFormat.setFontItalic(false);
                }
            }
 
            if (property == "font-stretch") {
                if (value == "ultra-condensed") {
                    charFormat.setFontStretch(QFont::UltraCondensed);
                } else if (value == "condensed") {
                    charFormat.setFontStretch(QFont::Condensed);
                } else if (value == "semi-condensed") {
                    charFormat.setFontStretch(QFont::SemiCondensed);
                } else if (value == "normal") {
                    charFormat.setFontStretch(100);
                } else if (value == "semi-expanded") {
                    charFormat.setFontStretch(QFont::SemiExpanded);
                } else if (value == "expanded") {
                    charFormat.setFontStretch(QFont::Expanded);
                } else if (value == "extra-expanded") {
                    charFormat.setFontStretch(QFont::ExtraExpanded);
                } else if (value == "ultra-expanded") {
                    charFormat.setFontStretch(QFont::UltraExpanded);
                } else { // "normal"
                    charFormat.setFontStretch(value.toInt());
                }
            }
 
            if (property == "font-weight") {
                // Convert from SVG range to QFont::Weight range,
                // as defined in qt's qfont.h
                int convertedWeight = QFont::Weight::Normal; // Defaulting to Weight::Normal
 
                switch (value.toInt()) {
                    case 100:
                        convertedWeight = QFont::Weight::Thin;
                        break;
                    case 200:
                        convertedWeight = QFont::Weight::ExtraLight;
                        break;
                    case 300:
                        convertedWeight = QFont::Weight::Light;
                        break;
                    case 400:
                        convertedWeight = QFont::Weight::Normal;
                        break;
                    case 500:
                        convertedWeight = QFont::Weight::Medium;
                        break;
                    case 600:
                        convertedWeight = QFont::Weight::DemiBold;
                        break;
                    case 700:
                        convertedWeight = QFont::Weight::Bold;
                        break;
                    case 800:
                        convertedWeight = QFont::Weight::ExtraBold;
                        break;
                    case 900:
                        convertedWeight = QFont::Weight::Black;
                        break;
                    default:
                        warnFile << "WARNING: Invalid weight value supplied to KoSvgTextShapeMarkupConverter::stylesFromString.";
                        break;
                }
 
                charFormat.setFontWeight(convertedWeight);
            }
 
            if (property == "text-decoration") {
                charFormat.setFontUnderline(false);
                charFormat.setFontOverline(false);
                charFormat.setFontStrikeOut(false);
                QStringList values = value.split(" ");
                if (values.contains("line-through")) {
                    charFormat.setFontStrikeOut(true);
                }
                if (values.contains("overline")) {
                    charFormat.setFontOverline(true);
                }
                if(values.contains("underline")){
                    charFormat.setFontUnderline(true);
                }
            }
 
            if (property == "text-transform") {
                if (value == "uppercase") {
                    charFormat.setFontCapitalization(QFont::AllUppercase);
                } else if (value == "lowercase") {
                    charFormat.setFontCapitalization(QFont::AllLowercase);
                } else if (value == "capitalize") {
                    charFormat.setFontCapitalization(QFont::Capitalize);
                } else{
                    charFormat.setFontCapitalization(QFont::MixedCase);
                }
            }
 
            if (property == "letter-spacing") {
                qreal val = SvgUtil::parseUnitX(context.data(), resolved, value);
                charFormat.setFontLetterSpacingType(QFont::AbsoluteSpacing);
                charFormat.setFontLetterSpacing(val);
            }
 
            if (property == "word-spacing") {
                qreal val = SvgUtil::parseUnitX(context.data(), resolved, value);
                charFormat.setFontWordSpacing(val);
            }
 
            if (property == "kerning") {
                if (value == "auto") {
                    charFormat.setFontKerning(true);
                } else {
                    qreal val = SvgUtil::parseUnitX(context.data(), resolved, value);
                    charFormat.setFontKerning(false);
                    charFormat.setFontLetterSpacingType(QFont::AbsoluteSpacing);
                    charFormat.setFontLetterSpacing(charFormat.fontLetterSpacing() + val);
                }
            }
 
            if (property == "stroke") {
                QPen pen = charFormat.textOutline();
                QColor color;
                color.setNamedColor(value);
                pen.setColor(color);
                charFormat.setTextOutline(pen);
            }
 
            if (property == "stroke-width") {
                QPen pen = charFormat.textOutline();
                pen.setWidth(value.toInt());
                charFormat.setTextOutline(pen);
            }
 
            if (property == "fill") {
                QColor color;
                color.setNamedColor(value);
 
                // avoid assertion failure in `KoColor` later
                if (!color.isValid()) {
                    continue;
                }
 
                // default color is #ff000000, so default alpha will be 1.0
                qreal currentAlpha = charFormat.foreground().color().alphaF();
 
                // if alpha was already defined by `fill-opacity` prop
                if (currentAlpha < 1.0) {
                    // and `fill` doesn't have alpha component
                    if (color.alphaF() < 1.0) {
                        color.setAlphaF(currentAlpha);
                    }
                }
 
                charFormat.setForeground(color);
            }
 
            if (property == "fill-opacity") {
                QColor color = charFormat.foreground().color();
                bool ok = true;
                qreal alpha = qBound(0.0, SvgUtil::fromPercentage(value, &ok), 1.0);
 
                // if conversion fails due to non-numeric input,
                // it defaults to 0.0, default to current alpha instead
                if (!ok) {
                    alpha = color.alphaF();
                }
                color.setAlphaF(alpha);
                charFormat.setForeground(color);
            }
 
            if (property == "text-anchor") {
                if (value == "end") {
                    blockFormat.setAlignment(Qt::AlignRight);
                } else if (value == "middle") {
                    blockFormat.setAlignment(Qt::AlignCenter);
                } else {
                    blockFormat.setAlignment(Qt::AlignLeft);
                }
            }
 
            if (property == "baseline-shift") {
                if (value == "super") {
                    charFormat.setVerticalAlignment(QTextCharFormat::AlignSuperScript);
                } else if (value == "sub") {
                    charFormat.setVerticalAlignment(QTextCharFormat::AlignSubScript);
                } else {
                    charFormat.setVerticalAlignment(QTextCharFormat::AlignNormal);
                }
            }
 
            if (property == "line-height") {
                double lineHeightPercent = -1.0;
                bool ok = false;
                if (value.endsWith('%')) {
                    // Note: Percentage line-height behaves differently than
                    // unitless number in case of nested descendant elements,
                    // but here we pretend they are the same.
                    lineHeightPercent = value.left(value.length() - 1).toDouble(&ok);
                    if (!ok) {
                        lineHeightPercent = -1.0;
                    }
                } else if(const double unitless = value.toDouble(&ok); ok) {
                    lineHeightPercent = unitless * 100.0;
                } else if (value == QLatin1String("normal")) {
                    lineHeightPercent = -1.0;
                    blockFormat.setLineHeight(1, QTextBlockFormat::SingleHeight);
                }
                if (lineHeightPercent >= 0) {
                    blockFormat.setLineHeight(lineHeightPercent, QTextBlockFormat::ProportionalHeight);
                }
            }
 
            if (property == "inline-size") {
                const qreal val = SvgUtil::parseUnitX(context.data(), resolved, value);
                if (val > 0.0) {
                    extraStyles.inlineSize = val;
                }
            }
 
            if (property == "white-space") {
                if (value == QLatin1String("pre")) {
                    extraStyles.wrappingMode = WrappingMode::WhiteSpacePre;
                } else if (value == QLatin1String("pre-wrap")) {
                    extraStyles.wrappingMode = WrappingMode::WhiteSpacePreWrap;
                } else {
                    extraStyles.wrappingMode = WrappingMode::QtLegacy;
                }
            }
        }
    }
 
    formats.append(charFormat);
    formats.append(blockFormat);
    return formats;
}

References KoSvgTextProperties::defaultProperties(), SvgUtil::fromPercentage(), KoSvgTextShapeMarkupConverter::ExtraStyles::inlineSize, SvgUtil::parseUnitX(), QtLegacy, style(), value(), warnFile, WhiteSpacePre, WhiteSpacePreWrap, and KoSvgTextShapeMarkupConverter::ExtraStyles::wrappingMode.

warnings()

QStringList KoSvgTextShapeMarkupConverter::warnings

(

)

const

A list of warnings produced during loading the user's text

Definition at line 1126 of file KoSvgTextShapeMarkupConverter.cpp.

{
    return d->warnings;
}

References d.

Member Data Documentation

d

const QScopedPointer<Private> KoSvgTextShapeMarkupConverter::d

private

Definition at line 135 of file KoSvgTextShapeMarkupConverter.h.

InlineSizeProperty

constexpr QTextFormat::Property KoSvgTextShapeMarkupConverter::InlineSizeProperty

staticconstexpr

Initial value:

=
        static_cast<QTextFormat::Property>(WrappingModeProperty + 1)

Definition at line 166 of file KoSvgTextShapeMarkupConverter.h.

WrappingModeProperty

constexpr QTextFormat::Property KoSvgTextShapeMarkupConverter::WrappingModeProperty

staticconstexpr

Initial value:

=
        static_cast<QTextFormat::Property>(QTextFormat::UserProperty + 56784)

Definition at line 164 of file KoSvgTextShapeMarkupConverter.h.

---

The documentation for this class was generated from the following files:

• libs/flake/text/KoSvgTextShapeMarkupConverter.h
• libs/flake/text/KoSvgTextShapeMarkupConverter.cpp