C++ KoXmlNode类代码示例

KoFilterEffectStack * FilterEffectResource::toFilterStack() const
{
    KoFilterEffectStack * filterStack = new KoFilterEffectStack();
    if (!filterStack)
        return 0;

    QByteArray data = m_data.toByteArray();
    KoXmlDocument doc;
    doc.setContent(data);
    KoXmlElement e = doc.documentElement();

    // only allow obect bounding box units
    if (e.hasAttribute("filterUnits") && e.attribute("filterUnits") != "objectBoundingBox")
        return 0;

    if (e.attribute("primitiveUnits") != "objectBoundingBox")
        return 0;

    // parse filter region rectangle
    QRectF filterRegion;
    filterRegion.setX(fromPercentage(e.attribute("x", "-0.1")));
    filterRegion.setY(fromPercentage(e.attribute("y", "-0.1")));
    filterRegion.setWidth(fromPercentage(e.attribute("width", "1.2")));
    filterRegion.setHeight(fromPercentage(e.attribute("height", "1.2")));
    filterStack->setClipRect(filterRegion);

    KoFilterEffectLoadingContext context(QString(""));

    KoFilterEffectRegistry * registry = KoFilterEffectRegistry::instance();

    // create the filter effects and add them to the shape
    for (KoXmlNode n = e.firstChild(); !n.isNull(); n = n.nextSibling()) {
        KoXmlElement primitive = n.toElement();
        KoFilterEffect * filterEffect = registry->createFilterEffectFromXml(primitive, context);
        if (!filterEffect) {
            qWarning() << "filter effect" << primitive.tagName() << "is not implemented yet";
            continue;
        }

        // parse subregion
        qreal x = fromPercentage(primitive.attribute("x", "0"));
        qreal y = fromPercentage(primitive.attribute("y", "0"));
        qreal w = fromPercentage(primitive.attribute("width", "1"));
        qreal h = fromPercentage(primitive.attribute("height", "1"));
        QRectF subRegion(QPointF(x, y), QSizeF(w, h));

        if (primitive.hasAttribute("in"))
            filterEffect->setInput(0, primitive.attribute("in"));
        if (primitive.hasAttribute("result"))
            filterEffect->setOutput(primitive.attribute("result"));

        filterEffect->setFilterRect(subRegion);

        filterStack->appendFilterEffect(filterEffect);
    }

    return filterStack;
}

bool KoInlineNote::loadOdf(const KoXmlElement & element, KoShapeLoadingContext &context, KoStyleManager *styleManager, KoChangeTracker *changeTracker)
{
    QTextDocument *document = new QTextDocument();
    QTextCursor cursor(document);
    KoTextDocument textDocument(document);
    textDocument.setStyleManager(styleManager);
    d->styleManager = styleManager;
    textDocument.setChangeTracker(changeTracker);

    KoTextLoader loader(context);

    if (element.namespaceURI() == KoXmlNS::text && element.localName() == "note") {

        QString className = element.attributeNS(KoXmlNS::text, "note-class");
        if (className == "footnote") {
            d->type = Footnote;
        }
        else if (className == "endnote") {
            d->type = Endnote;
        }
        else {
            delete document;
            return false;
        }

        d->id = element.attributeNS(KoXmlNS::text, "id");
        for (KoXmlNode node = element.firstChild(); !node.isNull(); node = node.nextSibling()) {
            setAutoNumbering(false);
            KoXmlElement ts = node.toElement();
            if (ts.namespaceURI() != KoXmlNS::text)
                continue;
            if (ts.localName() == "note-body") {
                loader.loadBody(ts, cursor);
            } else if (ts.localName() == "note-citation") {
                d->label = ts.attributeNS(KoXmlNS::text, "label");
                if (d->label.isEmpty()) {
                    setAutoNumbering(true);
                    d->label = ts.text();
                }
            }
        }
    }
    else if (element.namespaceURI() == KoXmlNS::office && element.localName() == "annotation") {
        d->author = element.attributeNS(KoXmlNS::text, "dc-creator");
        d->date = QDateTime::fromString(element.attributeNS(KoXmlNS::text, "dc-date"), Qt::ISODate);
        loader.loadBody(element, cursor); // would skip author and date, and do just the <text-p> and <text-list> elements
    }
    else {
        delete document;
        return false;
    }

    d->text = QTextDocumentFragment(document);
    delete document;
    return true;
}

void KisKraLoader::loadCompositions(const KoXmlElement& elem, KisImageWSP image)
{
    KoXmlNode child;

    for (child = elem.firstChild(); !child.isNull(); child = child.nextSibling()) {

        KoXmlElement e = child.toElement();
        QString name = e.attribute("name");
        bool exportEnabled = e.attribute("exportEnabled", "1") == "0" ? false : true;

        KisLayerComposition* composition = new KisLayerComposition(image, name);
        composition->setExportEnabled(exportEnabled);

        KoXmlNode value;
        for (value = child.lastChild(); !value.isNull(); value = value.previousSibling()) {
            KoXmlElement e = value.toElement();
            QUuid uuid(e.attribute("uuid"));
            bool visible = e.attribute("visible", "1") == "0" ? false : true;
            composition->setVisible(uuid, visible);
            bool collapsed = e.attribute("collapsed", "1") == "0" ? false : true;
            composition->setCollapsed(uuid, collapsed);
        }

        image->addComposition(composition);
    }
}

bool KPlatoXmlLoader::load( const KoXmlElement& plan )
{
    kDebug(kplatoXmlDebugArea())<<"plan";
    QString syntaxVersion = plan.attribute( "version" );
    m_loader.setVersion( syntaxVersion );
    if ( syntaxVersion.isEmpty() ) {
        int ret = KMessageBox::warningContinueCancel(
                      0, i18n( "This document has no syntax version.\n"
                               "Opening it in Plan may lose information." ),
                      i18n( "File-Format Error" ), KGuiItem( i18n( "Continue" ) ) );
        if ( ret == KMessageBox::Cancel ) {
            m_message = "USER_CANCELED";
            return false;
        }
        // set to max version and hope for the best
        m_loader.setVersion( KPLATO_MAX_FILE_SYNTAX_VERSION );
    } else if ( syntaxVersion > KPLATO_MAX_FILE_SYNTAX_VERSION ) {
        int ret = KMessageBox::warningContinueCancel(
                      0, i18n( "This document was created with a newer version of KPlato than Plan can load.\n"
                               "Syntax version: %1\n"
                               "Opening it in this version of Plan may lose some information.", syntaxVersion ),
                      i18n( "File-Format Mismatch" ), KGuiItem( i18n( "Continue" ) ) );
        if ( ret == KMessageBox::Cancel ) {
            m_message = "USER_CANCELED";
            return false;
        }
    }
    m_loader.startLoad();
    bool result = false;
    KoXmlNode n = plan.firstChild();
    for ( ; ! n.isNull(); n = n.nextSibling() ) {
        if ( ! n.isElement() ) {
            continue;
        }
        KoXmlElement e = n.toElement();
        if ( e.tagName() == "project" ) {
            m_loader.setProject( m_project );
            result = load( m_project, e, m_loader );
            if ( result ) {
                if ( m_project->id().isEmpty() ) {
                    m_project->setId( m_project->uniqueNodeId() );
                    m_project->registerNodeId( m_project );
                }
            } else {
                m_loader.addMsg( XMLLoaderObject::Errors, "Loading of project failed" );
                kError()<<"Loading of project failed";
                //TODO add some ui here
            }
        }
    }
    m_loader.stopLoad();
    return result;
}

void KisKraLoader::loadAssistantsList(const KoXmlElement &elem)
{
    KoXmlNode child;
    int count = 0;
    for (child = elem.firstChild(); !child.isNull(); child = child.nextSibling()) {
        KoXmlElement e = child.toElement();
        QString type = e.attribute("type");
        QString file_name = e.attribute("filename");
        m_d->assistantsFilenames.insert(file_name,type);
        count++;

    }
}

bool Context::load( const KoXmlDocument &document ) {
    m_document = document; // create a copy, document is deleted under our feet

    // Check if this is the right app
    KoXmlElement elm = m_document.documentElement();
    QString value = elm.attribute( "mime", QString() );
    if ( value.isEmpty() ) {
        errorPlan << "No mime type specified!";
//        setErrorMessage( i18n( "Invalid document. No mimetype specified." ) );
        return false;
    } else if ( value != "application/x-vnd.kde.plan" ) {
        if ( value == "application/x-vnd.kde.kplato" ) {
            // accept, since we forgot to change kplato to plan for so long...
        } else {
            errorPlan << "Unknown mime type " << value;
//        setErrorMessage( i18n( "Invalid document. Expected mimetype application/x-vnd.kde.kplato, got %1", value ) );
            return false;
        }
    }
/*    QString m_syntaxVersion = elm.attribute( "version", "0.0" );
    if ( m_syntaxVersion > "0.0" ) {
        int ret = KMessageBox::warningContinueCancel(
                      0, i18n( "This document was created with a newer version of Plan (syntax version: %1)\n"
                               "Opening it in this version of Plan will lose some information.", m_syntaxVersion ),
                      i18n( "File-Format Mismatch" ), KGuiItem( i18n( "Continue" ) ) );
        if ( ret == KMessageBox::Cancel ) {
            setErrorMessage( "USER_CANCELED" );
            return false;
        }
    }
*/
/*
#ifdef KOXML_USE_QDOM
    int numNodes = elm.childNodes().count();
#else
    int numNodes = elm.childNodesCount();
#endif
*/
    KoXmlNode n = elm.firstChild();
    for ( ; ! n.isNull(); n = n.nextSibling() ) {
        if ( ! n.isElement() ) {
            continue;
        }
        KoXmlElement element = n.toElement();
        if ( element.tagName() == "context" ) {
            m_context = element;
            m_contextLoaded = true;
        }
    }
    return true;
}

void SvgStyleParser::parseColorStops(QGradient *gradient, const KoXmlElement &e)
{
    QGradientStops stops;
    QColor c;

    for (KoXmlNode n = e.firstChild(); !n.isNull(); n = n.nextSibling()) {
        KoXmlElement stop = n.toElement();
        if (stop.tagName() == "stop") {
            float offset;
            QString temp = stop.attribute("offset");
            if (temp.contains('%')) {
                temp = temp.left(temp.length() - 1);
                offset = temp.toFloat() / 100.0;
            } else
                offset = temp.toFloat();

            QString stopColorStr = stop.attribute("stop-color");
            if (!stopColorStr.isEmpty()) {
                if (stopColorStr == "inherit") {
                    stopColorStr = inheritedAttribute("stop-color", stop);
                }
                parseColor(c, stopColorStr);
            }
            else {
                // try style attr
                QString style = stop.attribute("style").simplified();
                QStringList substyles = style.split(';', QString::SkipEmptyParts);
                for (QStringList::Iterator it = substyles.begin(); it != substyles.end(); ++it) {
                    QStringList substyle = it->split(':');
                    QString command = substyle[0].trimmed();
                    QString params  = substyle[1].trimmed();
                    if (command == "stop-color")
                        parseColor(c, params);
                    if (command == "stop-opacity")
                        c.setAlphaF(params.toDouble());
                }

            }
            QString opacityStr = stop.attribute("stop-opacity");
            if (!opacityStr.isEmpty()) {
                if (opacityStr == "inherit") {
                    opacityStr = inheritedAttribute("stop-opacity", stop);
                }
                c.setAlphaF(opacityStr.toDouble());
            }
            stops.append(QPair<qreal, QColor>(offset, c));
        }
    }
    if (stops.count())
        gradient->setStops(stops);
}

bool KoDocumentInfo::loadAuthorInfo(const KoXmlElement &e)
{
    KoXmlNode n = e.namedItem("author").firstChild();
    for (; !n.isNull(); n = n.nextSibling()) {
        KoXmlElement e = n.toElement();
        if (e.isNull())
            continue;

        if (e.tagName() == "full-name")
            setActiveAuthorInfo("creator", e.text().trimmed());
        else
            setActiveAuthorInfo(e.tagName(), e.text().trimmed());
    }

    return true;
}

// static
QHash<QString, KoXmlElement> Validity::preloadValidities(const KoXmlElement& body)
{
    QHash<QString, KoXmlElement> validities;
    KoXmlNode validation = KoXml::namedItemNS(body, KoXmlNS::table, "content-validations");
    kDebug() << "validation.isNull?" << validation.isNull();
    if (!validation.isNull()) {
        KoXmlElement element;
        forEachElement(element, validation) {
            if (element.tagName() ==  "content-validation" && element.namespaceURI() == KoXmlNS::table) {
                const QString name = element.attributeNS(KoXmlNS::table, "name", QString());
                validities.insert(name, element);
                kDebug() << " validation found:" << name;
            } else {
                kDebug() << " Tag not recognized:" << element.tagName();
            }
        }
    }

bool InfoVariable::loadOdf(const KoXmlElement & element, KoShapeLoadingContext & /*context*/)
{
    if (!s_loadInfo.exists() ) {
        for (unsigned int i = 0; i < numPropertyData; ++i) {
            s_loadInfo->insert(propertyData[i].tag, propertyData[i].property);
        }
    }

    const QString localName(element.localName());
    m_type = s_loadInfo->value(localName);

    for(KoXmlNode node = element.firstChild(); !node.isNull(); node = node.nextSibling() ) {
        if (node.isText()) {
            setValue(node.toText().data());
            break;
        }
    }

    return true;
}

bool KPrPlaceholderShapeFactory::supports(const KoXmlElement & e, KoShapeLoadingContext &context) const
{
    Q_UNUSED(context);
    // check parent if placeholder is set to true
    KoXmlNode parent = e.parentNode();
    if ( !parent.isNull() ) {
        KoXmlElement element = parent.toElement();
        if ( !element.isNull() ) {
            bool supported =  element.attributeNS( KoXmlNS::presentation, "placeholder", "false" ) == "true";
            kDebug(33001) << "placeholder:" << supported;
#ifndef NWORKAROUND_ODF_BUGS
            if (!supported && KoOdfWorkaround::fixPresentationPlaceholder() && element.hasAttributeNS(KoXmlNS::presentation, "class")) {
                supported = true;
                kDebug(33001) << "workaround OO placeholder bug" << supported;
            }
#endif
            return supported;
        }
    }
    return false;
}

bool KraConverter::loadXML(const KoXmlDocument &doc, KoStore *store)
{
    Q_UNUSED(store);

    KoXmlElement root;
    KoXmlNode node;

    if (doc.doctype().name() != "DOC") {
       m_doc->setErrorMessage(i18n("The format is not supported or the file is corrupted"));
        return false;
    }
    root = doc.documentElement();
    int syntaxVersion = root.attribute("syntaxVersion", "3").toInt();
    if (syntaxVersion > 2) {
       m_doc->setErrorMessage(i18n("The file is too new for this version of Krita (%1).", syntaxVersion));
        return false;
    }

    if (!root.hasChildNodes()) {
       m_doc->setErrorMessage(i18n("The file has no layers."));
        return false;
    }

    m_kraLoader = new KisKraLoader(m_doc, syntaxVersion);

    // Legacy from the multi-image .kra file period.
    for (node = root.firstChild(); !node.isNull(); node = node.nextSibling()) {
        if (node.isElement()) {
            if (node.nodeName() == "IMAGE") {
                KoXmlElement elem = node.toElement();
                if (!(m_image = m_kraLoader->loadXML(elem))) {
                    if (m_kraLoader->errorMessages().isEmpty()) {
                        m_doc->setErrorMessage(i18n("Unknown error."));
                    }
                    else {
                        m_doc->setErrorMessage(m_kraLoader->errorMessages().join(".\n"));
                    }
                    return false;
                }
                return true;
            }
            else {
                if (m_kraLoader->errorMessages().isEmpty()) {
                    m_doc->setErrorMessage(i18n("The file does not contain an image."));
                }
                return false;
            }
        }
    }
    return false;
}

bool KoDocumentInfo::loadOasisAuthorInfo(const KoXmlNode &metaDoc)
{
    KoXmlElement e = KoXml::namedItemNS(metaDoc, KoXmlNS::dc, "creator");
    if (!e.isNull() && !e.text().isEmpty())
        setActiveAuthorInfo("creator", e.text());

    KoXmlNode n = metaDoc.firstChild();
    for (; !n.isNull(); n = n.nextSibling()) {
        if (!n.isElement())
            continue;

        KoXmlElement e = n.toElement();
        if (!(e.namespaceURI() == KoXmlNS::meta &&
                e.localName() == "user-defined" && !e.text().isEmpty()))
            continue;

        QString name = e.attributeNS(KoXmlNS::meta, "name", QString());
        setActiveAuthorInfo(name, e.text());
    }

    return true;
}

KisNodeSP KisKraLoader::loadNodes(const KoXmlElement& element, KisImageWSP image, KisNodeSP parent)
{

    KoXmlNode node = element.firstChild();
    KoXmlNode child;

    if (!node.isNull()) {

        if (node.isElement()) {

            if (node.nodeName().toUpper() == LAYERS.toUpper() || node.nodeName().toUpper() == MASKS.toUpper()) {
                for (child = node.lastChild(); !child.isNull(); child = child.previousSibling()) {
                    KisNodeSP node = loadNode(child.toElement(), image, parent);
                    if (node) {
                        image->nextLayerName(); // Make sure the nameserver is current with the number of nodes.
                        image->addNode(node, parent);
                        if (node->inherits("KisLayer") && child.childNodesCount() > 0) {
                            loadNodes(child.toElement(), image, node);
                        }
                    }
                }
            }
        }
    }

    return parent;
}

KisImageWSP KisKraLoader::loadXML(const KoXmlElement& element)
{
    QString attr;
    KisImageWSP image = 0;
    QString name;
    qint32 width;
    qint32 height;
    QString profileProductName;
    double xres;
    double yres;
    QString colorspacename;
    const KoColorSpace * cs;

    if ((attr = element.attribute(MIME)) == NATIVE_MIMETYPE) {

        if ((m_d->imageName = element.attribute(NAME)).isNull()) {
            m_d->errorMessages << i18n("Image does not have a name.");
            return KisImageWSP(0);
        }

        if ((attr = element.attribute(WIDTH)).isNull()) {
            m_d->errorMessages << i18n("Image does not specify a width.");
            return KisImageWSP(0);
        }
        width = attr.toInt();

        if ((attr = element.attribute(HEIGHT)).isNull()) {
            m_d->errorMessages << i18n("Image does not specify a height.");
            return KisImageWSP(0);
        }

        height = attr.toInt();

        m_d->imageComment = element.attribute(DESCRIPTION);

        xres = 100.0 / 72.0;
        if (!(attr = element.attribute(X_RESOLUTION)).isNull()) {
            if (attr.toDouble() > 1.0) {
                xres = attr.toDouble() / 72.0;
            }
        }

        yres = 100.0 / 72.0;
        if (!(attr = element.attribute(Y_RESOLUTION)).isNull()) {
            if (attr.toDouble() > 1.0) {
                yres = attr.toDouble() / 72.0;
            }
        }

        if ((colorspacename = element.attribute(COLORSPACE_NAME)).isNull()) {
            // An old file: take a reasonable default.
            // Krita didn't support anything else in those
            // days anyway.
            colorspacename = "RGBA";
        }

        profileProductName = element.attribute(PROFILE);
        // A hack for an old colorspacename
        convertColorSpaceNames(colorspacename, profileProductName);

        QString colorspaceModel = KoColorSpaceRegistry::instance()->colorSpaceColorModelId(colorspacename).id();
        QString colorspaceDepth = KoColorSpaceRegistry::instance()->colorSpaceColorDepthId(colorspacename).id();

        if (profileProductName.isNull()) {
            // no mention of profile so get default profile";
            cs = KoColorSpaceRegistry::instance()->colorSpace(colorspaceModel, colorspaceDepth, "");
        } else {
            cs = KoColorSpaceRegistry::instance()->colorSpace(colorspaceModel, colorspaceDepth, profileProductName);
        }

        if (cs == 0) {
            // try once more without the profile
            cs = KoColorSpaceRegistry::instance()->colorSpace(colorspaceModel, colorspaceDepth, "");
            if (cs == 0) {
                m_d->errorMessages << i18n("Image specifies an unsupported color model: %1.", colorspacename);
                return KisImageWSP(0);
            }
        }

        if (m_d->document) {
            image = new KisImage(m_d->document->createUndoStore(), width, height, cs, name);
        }
        else {
            image = new KisImage(0, width, height, cs, name);
        }
        image->setResolution(xres, yres);
        loadNodes(element, image, const_cast<KisGroupLayer*>(image->rootLayer().data()));

        KoXmlNode child;
        for (child = element.lastChild(); !child.isNull(); child = child.previousSibling()) {
            KoXmlElement e = child.toElement();
            if(e.tagName() == "ProjectionBackgroundColor") {
                if (e.hasAttribute("ColorData")) {
                    QByteArray colorData = QByteArray::fromBase64(e.attribute("ColorData").toLatin1());
                    KoColor color((const quint8*)colorData.data(), image->colorSpace());
                    image->setDefaultProjectionColor(color);
                }
            }

            if (e.tagName().toLower() == "animation") {
//.........这里部分代码省略.........