Hi Philipp,
If your view is attached to the proxy model, then you could just emit from the
proxy itself.
Regards,
Tony
Sent: Friday, 29 November 2013 1:00 AM
I have a proxymodel that is responsible for background image downloading. How
to I notify the source model (which does not implement setData, doesn't have
to) that an image has been downloaded? My proxy keeps a cache of downloaded
images for every row in the source model
QVariant ProxyModel:data(index, role) {
if (role == Qt::DecorationRole) {
if (cache not contains(index)) {
startBackgroundDownload(QPersistentIndex(index));
return placeholderimage;
} else {
cachedImage;
}
}
}
void ProxyModel::onDownloadFinished(index) {
// how do I force the sourceModel to refresh?
emit sourceModel->dataChanged(index, QVector<int>() << Qt::DecorationRole);
}
This works, but I know we should not call signals of other objects directly. So
how would that work otherwise? By connecting the ProxyModels dataChanged signal
to the sourceModel dataChanged signal?
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