Hi Matthew,
I have this in a delegate and it seems to work well. I don't know about "best
way." This one intercepts the double-click event which would typically open an
editor. It could also work with a single click if you prefer (I personally found that
annoying from a user perspective). This particular delegate also re-implements the
paint() method (to show a color swatch) and a sizeHint(), but I don't see how that would
matter. Otherwise this is the only other method in it.
bool ColorDelegate::editorEvent(QEvent *e, QAbstractItemModel *mdl, const
QStyleOptionViewItem &opt, const QModelIndex &idx)
{
if (e->type() == QEvent::MouseButtonDblClick &&
idx.data().canConvert<QColor>()) {
if ((idx.flags() & Qt::ItemIsEditable) &&
static_cast<QMouseEvent*>(e)->button() == Qt::LeftButton) {
QColorDialog *dlg = new QColorDialog(const_cast<QWidget*>(opt.widget));
dlg->setColor(idx.data().value<QColor>());
dlg->setModal(true);
dlg->setAttribute(Qt::WA_DeleteOnClose);
connect(dlg, &QColorDialog::colorSelected, this, [mdl, idx](const QColor
&c) {
mdl->setData(idx, QVariant::fromValue(c));
});
dlg->show();
}
return true;
}
return QStyledItemDelegate::editorEvent(e, mdl, opt, idx);
}
HTH,
-Max
On 11/12/2019 3:45 PM, Matthew Woehlke wrote:
I have a QTreeView. For one of the columns, rather than editing the data
in-place, I want to pop up a QTextEdit. (For now, I'm hoping I'll be
able to use QInputDialog, but I may end up needing to roll my own.)
Is it reasonable to execute the dialog (QDialog::exec()) in an override
of QAbstractItemDelegate::createEditor, or do I need to hook
itemActivated or some such? (Maybe QAbstractItemDelegate::editorEvent
would be better?)
What is the best way to trigger the editor?
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