Selected Rows in QTableView, copy to QClipboard

Question

I have a SQLite-Database and I did it into a QSqlTableModel. To show the Database, I put that Model into a QTableView.

Now I want to create

Answer 1

Here is a variation on what Corwin Joy posted that works with QTableView and handles sparse selections differently. With this code if you have different columns selected in different rows (e.g. selected cells are (1,1), (1, 2), (2, 1), (3,2)) then when you paste it you will get empty cells corresponding to the "holes" in your selection (e.g. cells (2,2) and (3,1)). It also pulls in the column header text for columns that intersect the selection.

void CopyableTableView::copy()
{
    QItemSelectionModel *selection = selectionModel();
    QModelIndexList indices = selection->selectedIndexes();

    if(indices.isEmpty())
        return;

    QMap selectedColumnsMap;
    foreach (QModelIndex current, indices) {
        selectedColumnsMap[current.column()] = true;
    }
    QList selectedColumns = selectedColumnsMap.uniqueKeys();
    int minCol = selectedColumns.first();

    // prepend headers for selected columns
    QString selectedText;

    foreach (int column, selectedColumns) {
        selectedText += model()->headerData(column, Qt::Horizontal, Qt::DisplayRole).toString();
        if (column != selectedColumns.last())
            selectedText += QLatin1Char('\t');
    }
    selectedText += QLatin1Char('\n');

    // QModelIndex::operator < sorts first by row, then by column.
    // this is what we need
    qSort(indices);

    int lastRow = indices.first().row();
    int lastColumn = minCol;

    foreach (QModelIndex current, indices) {

        if (current.row() != lastRow) {
            selectedText += QLatin1Char('\n');
            lastColumn = minCol;
            lastRow = current.row();
        }

        if (current.column() != lastColumn) {
            for (int i = 0; i < current.column() - lastColumn; ++i)
                selectedText += QLatin1Char('\t');
            lastColumn = current.column();
        }

        selectedText += model()->data(current).toString();
    }

    selectedText += QLatin1Char('\n');

    QApplication::clipboard()->setText(selectedText);
}