void ImageListModel::fetchMore(const QModelIndex &)
{
int remainder = m_imageInfoList.count() - m_imageInfoCount;
int itemsToFetch = qMin(100, remainder);
int beginIndex = m_imageInfoCount;
int endIndex = beginIndex + itemsToFetch;
if (endIndex >= m_imageInfoList.count())
endIndex = m_imageInfoList.count() - 1;
beginInsertRows(QModelIndex(), beginIndex, endIndex);
m_imageInfoCount += itemsToFetch;
endInsertRows();
// start multithreaded image loading
for (int i = beginIndex; i <= endIndex; i++) {
const ImageInfo imageInfo = m_imageInfoList.at(i);
if (imageInfo.exists()) {
ImageLoader *imageLoader = new ImageLoader(imageInfo.imagePath(), i);
imageLoader->setScaleSize(MainWindow::MAX_THUMBNAIL_SIZE, MainWindow::MAX_THUMBNAIL_SIZE);
connect(imageLoader, SIGNAL(imageLoaded(QImage, int, int, int)), SLOT(thumbnailLoaded(QImage, int, int, int)));
m_imageLoaderPool.start(imageLoader);
}
}
emit changed();
qDebug("ImageListModel::fetchMore(): from %d to %d", beginIndex, endIndex);
}
