C++ KoShapeSavingContext::embeddedSaver方法代码示例

void ArtisticTextShape::saveOdf(KoShapeSavingContext &context) const
{
    SvgWriter svgWriter(QList<KoShape*>() << const_cast<ArtisticTextShape*>(this), size());
    QByteArray fileContent;
    QBuffer fileContentDevice(&fileContent);
    if (!fileContentDevice.open(QIODevice::WriteOnly))
        return;

    if(!svgWriter.save(fileContentDevice)) {
        kWarning() << "Could not write svg content";
        return;
    }

    const QString fileName = context.embeddedSaver().getFilename("SvgImages/Image");
    const QString mimeType = "image/svg+xml";

    context.xmlWriter().startElement("draw:frame");
    context.embeddedSaver().embedFile(context.xmlWriter(), "draw:image", fileName, mimeType.toLatin1(), fileContent);
    context.xmlWriter().endElement(); // draw:frame
}

void MusicShape::saveOdf( KoShapeSavingContext & context ) const
{
    // The name of this object in the ODF file.
    KoEmbeddedDocumentSaver &fileSaver = context.embeddedSaver();
    QString objectName = fileSaver.getFilename("Object");

    KoXmlWriter& writer = context.xmlWriter();
    writer.startElement("draw:frame");
    saveOdfAttributes(context, OdfAllAttributes);

    writer.startElement("music:shape");
    writer.addAttribute("xmlns:music", "http://www.calligra.org/music");
    MusicXmlWriter().writeSheet(writer, m_sheet, false);
    writer.endElement(); // music:shape

    const qreal previewZoom = 150 / 72.; // 150 DPI
    QSizeF imgSize = size(); // in points
    imgSize *= previewZoom;
    KoViewConverter converter;
    
    // Save a preview SVG image.
    // -------------------------

    // 1. Set up the svg renderer.
    QByteArray svgContents;           // The contents
    QBuffer svgBuffer(&svgContents);  // The corresponding QIODevice
    QSvgGenerator svg;
    svg.setOutputDevice(&svgBuffer);  // Write to the buffer
    svg.setSize(imgSize.toSize());
    svg.setViewBox(QRect(0, 0, boundingRect().width(), boundingRect().height()));
        
    // 2. Paint the svg preview image.
    //
    // We need to create all text as paths, because otherwise it
    // will be difficult for most people to preview the SVG
    // image. Not many people have music fonts installed.
    QPainter svgPainter;
    svgPainter.begin(&svg);
    svgPainter.setRenderHint(QPainter::Antialiasing);
    svgPainter.setRenderHint(QPainter::TextAntialiasing);
    m_style->setTextAsPath(true);
    constPaint(svgPainter, converter);
    m_style->setTextAsPath(false);
    svgPainter.end();

    // 3. Create the xml to embed the svg image and the contents to the file.
    writer.startElement("draw:image");
    QString name = QString("ObjectReplacements/") + objectName + ".svg";
    writer.addAttribute("xlink:type", "simple" );
    writer.addAttribute("xlink:show", "embed" );
    writer.addAttribute("xlink:actuate", "onLoad");
    writer.addAttribute("xlink:href", name);
    writer.endElement(); // draw:image
    fileSaver.saveFile(name, "image/svg+xml", svgContents);

    // Save a preview bitmap image.
    // ----------------------------

    // 1. Create the image.
    QImage img(imgSize.toSize(), QImage::Format_ARGB32);
    QPainter painter(&img);
    painter.setRenderHint(QPainter::Antialiasing);
    painter.setRenderHint(QPainter::TextAntialiasing);
    converter.setZoom(previewZoom);
    constPaint(painter, converter);

    // 2. Create the xml to embed the svg image and the contents to the file.
    writer.startElement("draw:image");
    name = context.imageHref(img);
    // FIXME: Find out how to save a picture using the embeddedSaver and saveFile()
    //name = QString("ObjectReplacements/") + objectName + ".png";
    writer.addAttribute("xlink:type", "simple" );
    writer.addAttribute("xlink:show", "embed" );
    writer.addAttribute("xlink:actuate", "onLoad");
    writer.addAttribute("xlink:href", name);
    writer.endElement(); // draw:image

    saveOdfCommonChildElements(context);
    writer.endElement(); // draw:frame
}