Method createThumbnail

src/thumbnailgeneratorthread.cpp:99–195

}

void ThumbnailGeneratorThread::createThumbnail()
{      
    QImage tmpImage, thumbnail;
    Image my_image;

    int img_width = 0;
    int img_height = 0;

    double img_dens_x = 0.0;
    double img_dens_y = 0.0;

    int orientation = 0;

    my_image.quiet(true);

    if (Formats::isNativeReadable(m_fileName)) {
        QImageReader imgReader(m_fileName);
        tmpImage = imgReader.read();

        img_width = tmpImage.width();
        img_height = tmpImage.height();

        try {
            my_image.ping(m_fileName.toStdString());

            orientation = my_image.orientation();
            my_image.autoOrient();

            img_dens_x = my_image.xResolution();
            img_dens_y = my_image.yResolution();
        }
        catch (Error &error) {
            QString err_read_status = QString("Error in reading metadata (Generating preview): %1").arg(QString::fromStdString(error.what()));
            qWarning() << "Read Error: " << err_read_status;

            int dpiX = tmpImage.dotsPerMeterX();
            int dpiY = tmpImage.dotsPerMeterY();

            img_dens_x = qRound(dpiX * 0.0254);
            img_dens_y = qRound(dpiY * 0.0254);
        }
        catch( Magick::WarningCoder &warning )
        {
            qWarning() << "Read Warning: " << QString("Warning : %1").arg(QString::fromStdString(warning.what()));;
        }
        catch( Magick::Warning &warning )
        {
            qWarning() << "Read Warning: " << QString("Warning : %1").arg(QString::fromStdString(warning.what()));;
        }

        if (m_generateThumbnail) {
            qreal scaleFactor = globals::Globals::scaleFactor();

            tmpImage = autoOrientImage(tmpImage, orientation);

            thumbnail = tmpImage.scaled(QSize(MAX_THUMB_W, MAX_THUMB_H) * scaleFactor,
                                       Qt::KeepAspectRatio,
                                       Qt::SmoothTransformation);