QStyledItemDelegate with QListView grows, but doesn't shrink

[dpaulat]

I have a class derived from QStyledItemDelegate that I am using to display HTML in a QListView. In order to bind my item delegate to the QListView, I use the following:

ui->myListView->setItemDelegate(new HTMLDelegate(this));

The QListView has defaults set, with the exception of the resizeMode property, which I have changed from Fixed to Adjust.

From the sizeHint method, the option.rect property only reflects growth, not shrinking, which causes my resulting undesired behavior:

QSize HTMLDelegate::sizeHint(const QStyleOptionViewItem &option,
                             const QModelIndex &index) const
{
    QStyleOptionViewItemV4 options = option;
    initStyleOption(&options, index);

    QTextDocument doc;
    doc.setHtml(index.data().toString());
    doc.setTextWidth(option.rect.width());
    return QSize(doc.idealWidth(), doc.size().height());
}

I can manually call a reset() on the QListView, and that will properly resize my items, but it also deselects any selected items. Sure, I could re-select the item, but I don't really see it as an elegant solution.

Any ideas around my problem?