C++ KoShapeLoadingContext类代码示例

bool KoTextOnShapeContainer::loadOdf(const KoXmlElement &element, KoShapeLoadingContext &context)
{
    Q_D(KoTextOnShapeContainer);
    if (d->textShape == 0)
        return false; // probably because the factory was not found.

    KoTextShapeDataBase *shapeData = qobject_cast<KoTextShapeDataBase*>(d->textShape->userData());
    Q_ASSERT(shapeData); // would be a bug in kotext

    QString styleName = element.attributeNS(KoXmlNS::draw, "style-name");
    if (!styleName.isEmpty()) {
        KoStyleStack &styleStack = context.odfLoadingContext().styleStack();
        styleStack.save();
        context.odfLoadingContext().fillStyleStack(element, KoXmlNS::draw, "style-name", "graphic");
        styleStack.setTypeProperties("graphic");
        QString valign = styleStack.property(KoXmlNS::draw, "textarea-vertical-align");
        if (valign == "top") {
            shapeData->setVerticalAlignment(Qt::AlignTop);
        } else if (valign == "middle") {
            shapeData->setVerticalAlignment(Qt::AlignVCenter);
        } else if (valign == "bottom") {
            shapeData->setVerticalAlignment(Qt::AlignBottom);
        }
        styleStack.restore();
    }

    return shapeData->loadOdf(element, context);
}

bool KoFormulaShape::loadOdfFrameElement(const KoXmlElement &element,
                                         KoShapeLoadingContext &context)
{
    // If this formula is embedded and not inline, then load the embedded document.
    if ( element.tagName() == "object" && element.hasAttributeNS( KoXmlNS::xlink, "href" )) {
        m_isInline = false;

        // This calls loadOdfEmbedded().
        return loadEmbeddedDocument( context.odfLoadingContext().store(),
                                     element,
                                     context.odfLoadingContext() );
    }

    // It's not a frame:object, so it must be inline.
    const KoXmlElement& topLevelElement = KoXml::namedItemNS(element, KoXmlNS::math, "math");
    if (topLevelElement.isNull()) {
        kWarning() << "no math element as first child";
        return false;
    }

    // Create a new root element, load the formula and replace the old one.
    FormulaElement* formulaElement = new FormulaElement();
    formulaElement->readMathML( topLevelElement );
    delete m_formulaData->formulaElement();
    m_formulaData->setFormulaElement(formulaElement);
    m_formulaData->notifyDataChange(0, false);

    m_isInline = true;

    return true;
}

bool Surface::loadOdf( const KoXmlElement &surfaceElement, KoShapeLoadingContext &context )
{
    KoStyleStack &styleStack = context.odfLoadingContext().styleStack();
    styleStack.save();
    
    if ( surfaceElement.hasAttributeNS( KoXmlNS::chart, "style-name" ) )
    {
        KDChart::BackgroundAttributes backgroundAttributes = d->kdPlane->backgroundAttributes();
        KDChart::FrameAttributes frameAttributes = d->kdPlane->frameAttributes();
        
        styleStack.clear();
        context.odfLoadingContext().fillStyleStack( surfaceElement, KoXmlNS::chart, "style-name", "chart" );
        
        styleStack.setTypeProperties( "graphic" );
        
        if ( styleStack.hasProperty( KoXmlNS::draw, "stroke" ) )
        {
            frameAttributes.setVisible( true );
            QString stroke = styleStack.property( KoXmlNS::draw, "stroke" );
            if( stroke == "solid" || stroke == "dash" )
            {
                QPen pen = KoOdfGraphicStyles::loadOdfStrokeStyle( styleStack, stroke, context.odfLoadingContext().stylesReader() );
                frameAttributes.setPen( pen );
            }
        }
        
        if ( styleStack.hasProperty( KoXmlNS::draw, "fill" ) )
        {
            backgroundAttributes.setVisible( true );
            QBrush brush;
            QString fill = styleStack.property( KoXmlNS::draw, "fill" );
            if ( fill == "solid" || fill == "hatch" )
                brush = KoOdfGraphicStyles::loadOdfFillStyle( styleStack, fill, context.odfLoadingContext().stylesReader() );
            else if ( fill == "gradient" )
            {
                brush = KoOdfGraphicStyles::loadOdfGradientStyle( styleStack, context.odfLoadingContext().stylesReader(), QSizeF( 5.0, 60.0 ) );
            }
            else if ( fill == "bitmap" )
                brush = KoOdfGraphicStyles::loadOdfPatternStyle( styleStack, context.odfLoadingContext(), QSizeF( 5.0, 60.0 ) );
            backgroundAttributes.setBrush( brush );
        }
        
        d->kdPlane->setBackgroundAttributes( backgroundAttributes );
        d->kdPlane->setFrameAttributes( frameAttributes );
    }

    styleStack.restore();
    
    return true;
}

void KoTosContainer::loadStyle(const KoXmlElement &element, KoShapeLoadingContext &context)
{
    Q_D(KoTosContainer);

    KoShapeContainer::loadStyle(element, context);

    KoStyleStack &styleStack = context.odfLoadingContext().styleStack();
    styleStack.setTypeProperties("graphic");

    QString verticalAlign(styleStack.property(KoXmlNS::draw, "textarea-vertical-align"));
    Qt::Alignment vAlignment(Qt::AlignTop);
    if (verticalAlign == "bottom") {
        vAlignment = Qt::AlignBottom;
    } else if (verticalAlign == "justify") {
        // not yet supported
        vAlignment = Qt::AlignVCenter;
    } else if (verticalAlign == "middle") {
        vAlignment = Qt::AlignVCenter;
    }

    QString horizontalAlign(styleStack.property(KoXmlNS::draw, "textarea-horizontal-align"));
    Qt::Alignment hAlignment(Qt::AlignLeft);
    if (horizontalAlign == "center") {
        hAlignment = Qt::AlignCenter;
    } else if (horizontalAlign == "justify") {
        // not yet supported
        hAlignment = Qt::AlignCenter;
    } else if (horizontalAlign == "right") {
        hAlignment = Qt::AlignRight;
    }

    d->alignment = vAlignment | hAlignment;
}

bool KoTosContainer::loadText(const KoXmlElement &element, KoShapeLoadingContext &context)
{
    Q_D(const KoTosContainer);

    KoXmlElement child;
    forEachElement(child, element) {
        // only recreate the text shape if there's something to be loaded
        if (child.localName() == "p" || child.localName() == "list") {

            KoShape *textShape = createTextShape(context.documentResourceManager());
            if (!textShape) {
                return false;
            }
            //apply the style properties to the loaded text
            setTextAlignment(d->alignment);

            // In the case of text on shape, we cannot ask the text shape to load
            // the odf, since it expects a complete document with style info and
            // everything, so we have to use the KoTextShapeData object instead.
            KoTextShapeDataBase *shapeData = qobject_cast<KoTextShapeDataBase*>(textShape->userData());
            Q_ASSERT(shapeData);
            shapeData->loadStyle(element, context);
            bool loadOdf = shapeData->loadOdf(element, context);

            return loadOdf;
        }
    }
    return true;
}

bool VectorShapeFactory::supports(const KoXmlElement & e, KoShapeLoadingContext &context) const
{
    if (e.localName() == "image" && e.namespaceURI() == KoXmlNS::draw) {
        QString href = e.attribute("href");
        if (!href.isEmpty()) {
            // check the mimetype
            if (href.startsWith(QLatin1String("./"))) {
                href.remove(0, 2);
            }
            // LO 3.5 does not write a mimetype for embedded wmf files, so guess also from content
            const QString mimetype = context.odfLoadingContext().mimeTypeForPath(href, true);

            return
                mimetype == QLatin1String("image/x-svm") ||
                mimetype == QLatin1String("image/x-emf") ||
                mimetype == QLatin1String("image/x-wmf") ||
                // Note: the Vector Shape supports SVG, but _NOT_ in this method, otherwise it will stomp all over loading the artistic text shape's svg
                //mimetype == QLatin1String("image/svg+xml") ||
                // next three for backward compatibility with Calligra
                mimetype == QLatin1String("application/x-svm") ||
                mimetype == QLatin1String("application/x-emf") ||
                mimetype == QLatin1String("application/x-wmf") ||
                // seems like MSO does not always write a mimetype
                // see jeffcoweb.jeffco.k12.co.us%2Fhigh%2Fchatfield%2Fdepartments%2Fbusiness%2Fbanking_finance%2Funit_Plan_Budget.odp
                mimetype.isEmpty() ||
                // next for compatibility with OO/LO and our filters
                // see drwho.virtadpt.net%2Ffiles%2FNOVALUG-Tor.odp
                mimetype.startsWith(QLatin1String("application/x-openoffice"));
        }
        return true;
    }

    return false;
}

bool PictureShape::loadOdfFrameElement(const KoXmlElement &element, KoShapeLoadingContext &context)
{
    if (m_imageCollection) {
        const QString href = element.attribute("href");
        // this can happen in case it is a presentation:placeholder
        if (!href.isEmpty()) {
            KoStore *store = context.odfLoadingContext().store();
            KoImageData *data = m_imageCollection->createImageData(href, store);
            setUserData(data);
        } else {
            // check if we have an office:binary data element containing the image data
            const KoXmlElement &binaryData(KoXml::namedItemNS(element, KoXmlNS::office, "binary-data"));
            if (!binaryData.isNull()) {
                QImage image;
                if (image.loadFromData(QByteArray::fromBase64(binaryData.text().toLatin1()))) {
                    KoImageData *data = m_imageCollection->createImageData(image);
                    setUserData(data);
                }
            }
        }
    }

    loadText(element, context);

    return true;
}

bool PictureShapeFactory::supports(const KoXmlElement &e, KoShapeLoadingContext &context) const
{
    if (e.localName() == "image" && e.namespaceURI() == KoXmlNS::draw) {
        QString href = e.attribute("href");
        if (!href.isEmpty()) {
            // check the mimetype
            if (href.startsWith(QLatin1String("./"))) {
                href.remove(0, 2);
            }
            QString mimetype = context.odfLoadingContext().mimeTypeForPath(href);
            if (!mimetype.isEmpty()) {
                return mimetype.startsWith("image");
            }
            else {
                return ( href.endsWith("bmp") ||
                         href.endsWith("jpg") ||
                         href.endsWith("gif") ||
                         href.endsWith("eps") ||
                         href.endsWith("png") ||
                         href.endsWith("tif") ||
                         href.endsWith("tiff"));
            }
        }
        else {
            return !KoXml::namedItemNS(e, KoXmlNS::office, "binary-data").isNull();
        }
    }
    return false;
}

void PictureShape::loadStyle(const KoXmlElement& element, KoShapeLoadingContext& context)
{
    // Load the common parts of the style.
    KoTosContainer::loadStyle(element, context);

    KoStyleStack &styleStack = context.odfLoadingContext().styleStack();
    styleStack.setTypeProperties("graphic");

    // Mirroring
    if (styleStack.hasProperty(KoXmlNS::style, "mirror")) {
        QString mirrorMode = styleStack.property(KoXmlNS::style, "mirror");

        QFlags<PictureShape::MirrorMode>  mode = 0;

        // Only one of the horizontal modes
        if (mirrorMode.contains("horizontal-on-even")) {
            mode |= MirrorHorizontalOnEven;
        }
        else if (mirrorMode.contains("horizontal-on-odd")) {
            mode |= MirrorHorizontalOnOdd;
        }
        else if (mirrorMode.contains("horizontal")) {
            mode |= MirrorHorizontal;
        }

        if (mirrorMode.contains("vertical")) {
            mode |= MirrorVertical;
        }

        m_mirrorMode = mode;
    }

    // Color-mode (effects)
    if (styleStack.hasProperty(KoXmlNS::draw, "color-mode")) {
        QString colorMode = styleStack.property(KoXmlNS::draw, "color-mode");
        if (colorMode == "greyscale") {
            setColorMode(Greyscale);
        }
        else if (colorMode == "mono") {
            setColorMode(Mono);
        }
        else if (colorMode == "watermark") {
            setColorMode(Watermark);
        }
    }

    // image opacity
    QString opacity(styleStack.property(KoXmlNS::draw, "image-opacity"));
    if (! opacity.isEmpty() && opacity.right(1) == "%") {
        setTransparency(1.0 - (opacity.left(opacity.length() - 1).toFloat() / 100.0));
    }

    // clip rect
    m_clippingRect = parseClippingRectString(styleStack.property(KoXmlNS::fo, "clip"));
}

void Rotate::loadStyle(const KoXmlElement& element, KoShapeLoadingContext& context)
{
    // Load the common parts of the style.
    KoShape::loadStyle(element, context);

    KoStyleStack &styleStack = context.odfLoadingContext().styleStack();
    styleStack.setTypeProperties("graphic");

    QString dummy;

    if (styleStack.hasProperty(KoXmlNS::dr3d, "horizontal-segments")) {
        dummy = styleStack.property(KoXmlNS::dr3d, "horizontal-segments");
        bool ok;
        int hs = dummy.toInt(&ok);
        if (ok) {
            m_horizontalSegments = hs;
        }
    }
    if (styleStack.hasProperty(KoXmlNS::dr3d, "vertical-segments")) {
        dummy = styleStack.property(KoXmlNS::dr3d, "vertical-segments");
        bool ok;
        int vs = dummy.toInt(&ok);
        if (ok) {
            m_verticalSegments = vs;
        }
    }

    if (styleStack.hasProperty(KoXmlNS::dr3d, "end-angle")) {
        dummy = styleStack.property(KoXmlNS::dr3d, "end-angle");
        bool ok;
        qreal ea = dummy.toDouble(&ok);
        if (ok) {
            m_endAngle = ea;
        }
    }

    if (styleStack.hasProperty(KoXmlNS::dr3d, "close-front")) {
        dummy = styleStack.property(KoXmlNS::dr3d, "close-front");
        m_closeFront = (dummy == "true");
    }
    if (styleStack.hasProperty(KoXmlNS::dr3d, "close-back")) {
        dummy = styleStack.property(KoXmlNS::dr3d, "close-back");
        m_closeBack = (dummy == "true");
    }

    // FIXME: Note that this can be a percentage (our test file has "80%").
    if (styleStack.hasProperty(KoXmlNS::dr3d, "back-scale")) {
        dummy = styleStack.property(KoXmlNS::dr3d, "back-scale");
        bool ok;
        qreal bs = dummy.toDouble(&ok);
        if (ok) {
            m_backScale = bs;
        }
    }
}

bool KPrPlaceholderTextStrategy::loadOdf( const KoXmlElement & element, KoShapeLoadingContext & context )
{
    if (KoTextSharedLoadingData *textSharedData = dynamic_cast<KoTextSharedLoadingData *>(context.sharedData(KOTEXT_SHARED_LOADING_ID))) {
        KoShapeFactoryBase *factory = KoShapeRegistry::instance()->value("TextShapeID");
        Q_ASSERT(factory);
        delete m_textShape;
        m_textShape = factory->createDefaultShape(context.documentResourceManager());

        KoTextShapeData *shapeData = qobject_cast<KoTextShapeData*>(m_textShape->userData());
        shapeData->document()->setUndoRedoEnabled(false);

        QTextDocument *document = shapeData->document();
        QTextCursor cursor(document);
        QTextBlock block = cursor.block();

        const QString styleName = element.attributeNS(KoXmlNS::presentation, "style-name");
        if (!styleName.isEmpty()) {
            const KoXmlElement *style = context.odfLoadingContext().stylesReader().findStyle(styleName, "presentation", context.odfLoadingContext().useStylesAutoStyles());

            if (style) {
                KoParagraphStyle paragraphStyle;
                paragraphStyle.loadOdf(style, context);
                paragraphStyle.applyStyle(block, false); // TODO t.zachmann is the false correct?
            }
        }

        const QString textStyleName = element.attributeNS(KoXmlNS::draw, "text-style-name");
        if (!textStyleName.isEmpty()) {
            KoParagraphStyle *style = textSharedData->paragraphStyle(textStyleName, context.odfLoadingContext().useStylesAutoStyles());
            if (style) {
                style->applyStyle(block, false); // TODO t.zachmann is the false correct?
            }
        }

        cursor.insertText(text());
        shapeData->setDirty();
        shapeData->document()->setUndoRedoEnabled(true);
    }
    return true;
}

void ShrinkToFitShapeContainer::tryWrapShape(KoShape *shape, const KoXmlElement &element, KoShapeLoadingContext &context)
{
    KoTextShapeData* data = dynamic_cast<KoTextShapeData*>(shape->userData());
    if (!data || data->resizeMethod() != KoTextShapeData::ShrinkToFitResize)
        return;

    KoShapeContainer *oldParent = shape->parent();
    ShrinkToFitShapeContainer *tos = wrapShape(shape, context.documentResourceManager());
    if (!tos->loadOdf(element, context)) {
        shape->setParent(oldParent);
        delete tos;
    }
}

bool VideoShape::loadOdfFrameElement(const KoXmlElement &element, KoShapeLoadingContext &context)
{
    /* the loading of the attributes might set the event actions which removes the m_videoEventAction
     * when there are other eventactions for the shape. Therefore we need to add it again. It is no
     * problem to add it again as internally a set is used and so it is not problematic when it is 
     * already set. */
    addEventAction(m_videoEventAction);

    if (m_videoCollection) {
        const QString href = element.attribute("href");
        // this can happen in case it is a presentation:placeholder
        if (!href.isEmpty()) {
            QUrl url = QUrl::fromUserInput(href);
            VideoData *data=0;

            if(href.startsWith("../")) {
                // file is outside store
                QUrl url = context.odfLoadingContext().store()->urlOfStore();
                QString path = url.path();
                if (!path.endsWith(QLatin1Char('/'))) {
                    path.append(QLatin1Char('/'));
                }
                path.append(href.mid(3));
                url.setPath(path);
                data = m_videoCollection->createExternalVideoData(url, false);
            } else if(!url.isRelative()) {
                // file is outside store and absolute
                data = m_videoCollection->createExternalVideoData(QUrl::fromUserInput(href), false);
            } else {
                // file is inside store
                KoStore *store = context.odfLoadingContext().store();
                data = m_videoCollection->createVideoData(href, store);
            }
            setUserData(data);
        }
    }

    return true;
}

KoTextLoader::KoTextLoader(KoShapeLoadingContext &context)
        : QObject()
        , d(new Private(context))
{
    KoSharedLoadingData *sharedData = context.sharedData(KOTEXT_SHARED_LOADING_ID);
    if (sharedData) {
        d->textSharedData = dynamic_cast<KoTextSharedLoadingData *>(sharedData);
    }

    kDebug(32500) << "sharedData" << sharedData << "textSharedData" << d->textSharedData;

    if (!d->textSharedData) {
        d->textSharedData = new KoTextSharedLoadingData();
        // TODO pass style manager so that on copy and paste we can recognice the same styles
        d->textSharedData->loadOdfStyles(context.odfLoadingContext(), 0);
        if (!sharedData) {
            context.addSharedData(KOTEXT_SHARED_LOADING_ID, d->textSharedData);
        } else {
            kWarning(32500) << "A different type of sharedData was found under the" << KOTEXT_SHARED_LOADING_ID;
            Q_ASSERT(false);
        }
    }
}

// static
void KoTextOnShapeContainer::tryWrapShape(KoShape *shape, const KoXmlElement &element, KoShapeLoadingContext &context)
{
    KoXmlElement text = KoXml::namedItemNS(element, KoXmlNS::text, "p");
    if (!text.isNull()) {
        KoShapeContainer *oldParent = shape->parent();
        KoTextOnShapeContainer *tos = new KoTextOnShapeContainer(shape,
                context.documentResourceManager());
        if (!tos->loadOdf(element, context)) {
            // failed, delete it again.
            shape->setParent(oldParent);
            delete tos;
        }
    }
}