I've got a QTableView that I'm putting a custom widget/editor in one column
to allow editing of data, that I've got a couple of questions about. First, the
custom widget is simply 3 QRadioButtons in a horizontal layout:
threeRadioButtonWidget
-- QHBoxLayout
---- QRadioButton
---- QRadioButton
---- QRadioButton
And I create the widget in my delegate's createEditor()
QWidget *myDelegate::createEditor(QWidget *parent,
const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
Q_UNUSED(option)
Q_UNUSED(index)
threeRadioButtonWidget* w = new threeRadioButtonWidget(parent);
connect(w, & threeRadioButtonWidget::clicked,
this, &myDelegate::editorClicked);
return w;
}
Then, because I want those editors to always be visible I have the following
in my parent class:
mDelegate = new myDelegate(this);
ui->tableView->setItemDelegateForColumn(3, mDelegate);
for(int i=0; i < mModel->rowCount(); ++i)
{
QModelIndex idx = mModel->index(i, 3, QModelIndex());
ui->tableView->openPersistentEditor(idx);
}
Questions:
1. Is there any way to avoid the openPersistentEditor loop above? The way
I have it now works, but seems clumsy, especially as changes in the underlying
data causes row/column counts to change. It seems like I would want to do
something in my delegate's paint() function to paint the image of the 3 radio
buttons, but I not seeing how I do that in a way where the real editing widget
would line up perfectly with the painted image when the user goes to edit.
a. Also, if I set it up where it's no longer a persistent editor, I want it
so the user
only has to click once over a radio button to count as a click on the
radio
button itself. I don't want the user to have to click in the cell first
to get the
editor to activate, then have to click a second time.
2. My selection behavior for the table is QAbstractItemView::SelectRows. When
the user clicks on a given row to select it, the other cells in the selected
row get
the highlighted color, but the background of the cells controlled by this
delegate
doesn't change to match. I get why that occurs given the way I have it - since
I'm
using openPersistentEditor(), the real three radio button widget is always
shown,
and I need to propagate the selection color down to that widget's background
color for it to work, but I'm assuming that if I get the paint() issue from
question
#1 working I could correct it there?
3. I allow the user to drag and drop table rows to reorder the data. As I
currently
have the code, the threeRadioButtonWidget object isn't not included in the drag
pixmap, so while the user is dragging a row, the drag looks "wrong" - it looks
like
that column's data isn't coming along with the drag. Again, I'm assuming if I
fix
the paint() question above, that might take care of itself?
Sean
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