C++ QTextImageFormat::width方法代码示例

static QSize getImageSize(QTextDocument *doc, const QTextImageFormat &format)
{
    QImage image;

    const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth);
    const int width = qRound(format.width());
    const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight);
    const int height = qRound(format.height());

    QSize size(width, height);
    if (!hasWidth || !hasHeight) {
        image = getImage(doc, format);
        if (!hasWidth)
            size.setWidth(image.width());
        if (!hasHeight)
            size.setHeight(image.height());
    }

    qreal scale = 1.0;
    QPaintDevice *pdev = doc->documentLayout()->paintDevice();
    if (pdev) {
        extern int qt_defaultDpi();
        if (image.isNull())
            image = getImage(doc, format);
        if (!image.isNull())
            scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi());
    }
    size *= scale;

    return size;
}

void QTextOdfWriter::writeInlineCharacter(QXmlStreamWriter &writer, const QTextFragment &fragment) const
{
    writer.writeStartElement(drawNS, QString::fromLatin1("frame"));
    if (m_strategy == 0) {
        // don't do anything.
    }
    else if (fragment.charFormat().isImageFormat()) {
        QTextImageFormat imageFormat = fragment.charFormat().toImageFormat();
        writer.writeAttribute(drawNS, QString::fromLatin1("name"), imageFormat.name());

        // vvv  Copy pasted mostly from Qt =================
        QImage image;
        QString name = imageFormat.name();
        if (name.startsWith(QLatin1String(":/"))) // auto-detect resources
            name.prepend(QLatin1String("qrc"));
        QUrl url = QUrl::fromEncoded(name.toUtf8());
        const QVariant data = m_document->resource(QTextDocument::ImageResource, url);
        if (data.type() == QVariant::Image) {
            image = qvariant_cast<QImage>(data);
        } else if (data.type() == QVariant::ByteArray) {
            image.loadFromData(data.toByteArray());
        }

        if (image.isNull()) {
            QString context;
            if (QTextImageHandler::externalLoader)
                image = QTextImageHandler::externalLoader(name, context);

            if (image.isNull()) { // try direct loading
                name = imageFormat.name(); // remove qrc:/ prefix again
                image.load(name);
            }
        }

        // ^^^ Copy pasted mostly from Qt =================
        if (! image.isNull()) {
            QBuffer imageBytes;
            QImageWriter imageWriter(&imageBytes, "png");
            imageWriter.write(image);
            QString filename = m_strategy->createUniqueImageName();
            m_strategy->addFile(filename, QString::fromLatin1("image/png"), imageBytes.data());

            // get the width/height from the format.
            qreal width = (imageFormat.hasProperty(QTextFormat::ImageWidth)) ? imageFormat.width() : image.width();
            writer.writeAttribute(svgNS, QString::fromLatin1("width"), pixelToPoint(width));
            qreal height = (imageFormat.hasProperty(QTextFormat::ImageHeight)) ? imageFormat.height() : image.height();
            writer.writeAttribute(svgNS, QString::fromLatin1("height"), pixelToPoint(height));

            writer.writeStartElement(drawNS, QString::fromLatin1("image"));
            writer.writeAttribute(xlinkNS, QString::fromLatin1("href"), filename);
            writer.writeEndElement(); // image
        }
    }

    writer.writeEndElement(); // frame
}

void KDReports::TextDocumentData::updatePercentSize( QTextImageFormat& imageFormat, const QSizeF& size )
{
    // "W50" means W=50%.  "H60" means H=60%.
    QString prop = imageFormat.property( ResizableImageProperty ).toString();
    const qreal imageRatio = imageFormat.height() / imageFormat.width();
    const qreal pageWidth = size.width();
    const qreal pageHeight = size.height();
    const qreal pageRatio = pageWidth ? pageHeight / pageWidth : 0;
    if ( prop[0] == QLatin1Char( 'T' ) ) {
        //qDebug() << "updatePercentSize fitToPage" << imageRatio << pageRatio;
        if ( imageRatio < pageRatio ) {
            prop = QString::fromLatin1( "W100" );
        } else {
            prop = QString::fromLatin1( "H100" );
        }
    }
    const qreal percent = prop.mid( 1 ).toDouble();
    switch ( prop[0].toLatin1() ) {
    case 'W':
        {
        const qreal newWidth = pageWidth * percent / 100.0;
        imageFormat.setWidth( newWidth );
        imageFormat.setHeight( newWidth * imageRatio );
        // ### I needed to add this -2 here for 100%-width images to fit in
        if ( percent == 100.0 )
            imageFormat.setWidth( imageFormat.width() - 2 );
        }
        break;
    case 'H':
        imageFormat.setHeight( pageHeight * percent / 100.0 );
        // ### I needed to add -6 here for 100%-height images to fit in (with Qt-4.4)
        // and it became -9 with Qt-4.5, and even QtSw doesn't know why.
        // Task number 241890
        if ( percent == 100.0 )
            imageFormat.setHeight( imageFormat.height() - 10 );
        imageFormat.setWidth( imageRatio ? imageFormat.height() / imageRatio : 0 );
        //qDebug() << "updatePercentSize" << size << "->" << imageFormat.width() << "x" << imageFormat.height();
        break;
    default:
        qWarning( "Unhandled image format property type - internal error" );
    }
}

void TextDocumentRtfOutput::createImage(const QImage &image, const QTextImageFormat &format)
{
#if 0
    QString imageUuid = QString("rtfparser://") + QUuid::createUuid().toString();
    m_document->addResource(QTextDocument::ImageResource, QUrl(imageUuid), QVariant(image));
    format.setName(imageUuid);
    m_cursor->insertImage(format);
#else
    m_cursor->insertImage(image.scaled(format.width(), format.height()));
#endif
}

QString TextDocumentSerializer::getImageTag(QTextImageFormat format)
{
    int width = format.width();
    int height = format.height();

    QString text;

    resources->setDocument(document);
    resources->saveImage(format.name());

    if(width == 0 || height == 0)
        text = QString("<img src=\"%1\">").arg(relativeImagePath(format));
    else
        text = QString("<img src=\"%1\" width=\"%2\" height=\"%3\">")
                .arg(relativeImagePath(format))
                .arg(width)
                .arg(height);

    return text;
}

static QSize getPixmapSize(QTextDocument *doc, const QTextImageFormat &format)
{
    QPixmap pm;

    const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth);
    const int width = qRound(format.width());
    const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight);
    const int height = qRound(format.height());

    QSize size(width, height);
    if (!hasWidth || !hasHeight) {
        pm = getPixmap(doc, format);
        const int pmWidth = pm.width() / pm.devicePixelRatio();
        const int pmHeight = pm.height() / pm.devicePixelRatio();

        if (!hasWidth) {
            if (!hasHeight)
                size.setWidth(pmWidth);
            else
                size.setWidth(qRound(height * (pmWidth / (qreal) pmHeight)));
        }
        if (!hasHeight) {
            if (!hasWidth)
                size.setHeight(pmHeight);
            else
                size.setHeight(qRound(width * (pmHeight / (qreal) pmWidth)));
        }
    }

    qreal scale = 1.0;
    QPaintDevice *pdev = doc->documentLayout()->paintDevice();
    if (pdev) {
        if (pm.isNull())
            pm = getPixmap(doc, format);
        if (!pm.isNull())
            scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi());
    }
    size *= scale;

    return size;
}

//.........这里部分代码省略.........
         const bool attributesEmitted = emitCharFormatStyle(format);
        if (attributesEmitted)
            html += QLatin1String("\">");
        else
            html.chop(qstrlen(styleTag.latin1()));
    */
    QString txt = fragment.text();
//     kDebug() << txt ;
    if ( txt.count() == 1 && txt.at( 0 ) == QChar::ObjectReplacementCharacter ) {
        if ( format.isImageFormat() ) {
            QTextImageFormat imgFmt = format.toImageFormat();

            html += QLatin1String( "<img" );

            if ( imgFmt.hasProperty( QTextFormat::ImageName ) ) {
                emitAttribute( "src", imgFmt.name() );
            }

            if ( imgFmt.hasProperty( BilboTextFormat::ImageTitle ) ) {
                const QString title = imgFmt.stringProperty( BilboTextFormat::ImageTitle );
                if ( !title.isEmpty() ) {
                    emitAttribute( "title", imgFmt.stringProperty( BilboTextFormat::ImageTitle ) );
                }
            }

            if ( imgFmt.hasProperty( BilboTextFormat::ImageAlternateText ) ) {
                const QString alternate = imgFmt.stringProperty( BilboTextFormat::ImageAlternateText );
                if ( !alternate.isEmpty() ) {
                    emitAttribute( "alt", imgFmt.stringProperty( BilboTextFormat::ImageAlternateText ) );
                }
            }

            if ( imgFmt.hasProperty( QTextFormat::ImageWidth ) ) {
                emitAttribute( "width", QString::number( imgFmt.width() ) );
            }

            if ( imgFmt.hasProperty( QTextFormat::ImageHeight ) ) {
                emitAttribute( "height", QString::number( imgFmt.height() ) );
            }

            if ( QTextFrame *imageFrame = qobject_cast<QTextFrame *>( doc->objectForFormat( imgFmt ) ) ) {
                emitFloatStyle( imageFrame->frameFormat().position() );
            }

            html += QLatin1String( " />" );
        }
    } else {
//         Q_ASSERT(!txt.contains(QChar::ObjectReplacementCharacter));

        txt = Qt::escape( txt );

        // split for [\n{LineSeparator}]
        QString forcedLineBreakRegExp = QString::fromLatin1( "[\\na]" );
        forcedLineBreakRegExp[3] = QChar::LineSeparator;

        const QStringList lines = txt.split( QRegExp( forcedLineBreakRegExp ) );
        for ( int i = 0; i < lines.count(); ++i ) {
            if ( i > 0 )
                html += QLatin1String( "<br />" ); // space on purpose for compatibility with Netscape, Lynx & Co.
            //and to convert LineSeparators to <br /> tags.
            html += lines.at( i );
        }
    }

//     kDebug() << html ;