Method convertImage

cli/scriptapi.cpp:238–261

! * \brief Resizes an image converting it to the specified \a format using the specified \a quality. * \returns Returns the converted image or in case the conversion is not possible the original \a imageData. * \remarks * - In case \a maxSize is zero the original size will be kept. In this case the conversion to the specified * \a format with the specified \a quality will always be done. *

 *   to true.
 */
QByteArray UtilityObject::convertImage(const QByteArray &imageData, const QSize &maxSize, const QString &format, int quality, bool force)
{
    auto image = QImage::fromData(imageData);
    auto imageChanged = false;
    if (image.isNull()) {
        return imageData;
    }
    if (maxSize.isNull()) {
        imageChanged = true;
    } else if (image.width() > maxSize.width() || image.height() > maxSize.height()) {
        image = image.scaled(maxSize.width(), maxSize.height(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
        imageChanged = true;
        if (image.isNull()) {
            return imageData;
        }
    }
    if (!imageChanged && !force) {
        return imageData;
    }
    auto newData = QByteArray();
    auto buffer = QBuffer(&newData);
    auto res = buffer.open(QIODevice::WriteOnly) && image.save(&buffer, format.isEmpty() ? "JPEG" : format.toUtf8().data(), quality);
    return res ? newData : imageData;
}

static QString propertyString(const QJSValue &obj, const QString &propertyName)
{