Copying part of QTableView - qt

Question

So I have a question very closely related to another question I've seen on here but when I tried posing my question there I got no responses, I'm hoping by asking this as a fresh question someone can help me out. Basically I want simply copy a portion of my table that I've created so that I can paste it to an excel file. Here's what I have:
QAbstractItemModel *abmodel = ui.tableview->model();
QItemSelectionModel *model = ui.tableview->selectionModel();
QModelIndexList list = model->selectionIndexes();
qSort(list);
QModelIndex index = list.first();
for(int i = 0; i < list.size(); i++)
{
QModelIndex index = list.at(i);
QString text = abmodel->data(index).toString();
copy_table.append(text);
if(index.row() != previous.row())
{
copy_table.append('\n');
}
else
{
copy_table.append('\t');
}
previous = index;
}
QClipboard *clipboard = QApplication::clipboard();
clipboard->setText(copy_table);
This will copy a column fine, but when I attempt to copy a row or say a 2x2 subtable the row index gets messed up, incorrectly assigning the row index for the values. Any thoughts?

Answer 1

Well, already figured it out, sorry anyone that wasted their time and looked.
void TestCopyTable::on_pushButton_copy_clicked()
{
QAbstractItemModel *abmodel = ui.tableView->model();
QItemSelectionModel * model = ui.tableView->selectionModel();
QModelIndexList list = model->selectedIndexes();
qSort(list);
if(list.size() < 1)
return;
QString copy_table;
QModelIndex last = list.last();
QModelIndex previous = list.first();
list.removeFirst();
for(int i = 0; i < list.size(); i++)
{
QVariant data = abmodel->data(previous);
QString text = data.toString();
QModelIndex index = list.at(i);
copy_table.append(text);
if(index.row() != previous.row())
{
copy_table.append('\n');
}
else
{
copy_table.append('\t');
}
previous = index;
}
copy_table.append(abmodel->data(list.last()).toString());
copy_table.append('\n');
QClipboard *clipboard = QApplication::clipboard();
clipboard->setText(copy_table);
}

Answer 2

I wrote some code based on Phil's to copy the selection when the user types Control-C.
I subclassed QTableWidget and overrode keyPressEvent():
void MyTableWidget::keyPressEvent(QKeyEvent* event) {
// If Ctrl-C typed
// Or use event->matches(QKeySequence::Copy)
if (event->key() == Qt::Key_C && (event->modifiers() & Qt::ControlModifier))
{
QModelIndexList cells = selectedIndexes();
qSort(cells); // Necessary, otherwise they are in column order
QString text;
int currentRow = 0; // To determine when to insert newlines
foreach (const QModelIndex& cell, cells) {
if (text.length() == 0) {
// First item
} else if (cell.row() != currentRow) {
// New row
text += '\n';
} else {
// Next cell
text += '\t';
}
currentRow = cell.row();
text += cell.data().toString();
}
QApplication::clipboard()->setText(text);
}
}
Output example (tab-separated):
foo bar baz qux
bar baz qux foo
baz qux foo bar
qux foo bar baz

Answer 3

Regarding the cdline:
qSort(cells); // Necessary, otherwise they are in column order
currently(20190118) it brings a warning:
Warnung: 'qSort >' is deprecated: Use std::sort
so my solution to replace the line with:
std::sort(cells.begin(),cells.end());
Compile, Run OK -> so far so good. But Question: Benefit of this cdline?
I found there is no one. Made several Test with copy from gui and parsing it to excel. Everything was fine even with the scenario 2x2 or othe XxY.