problem with tableview when view a large number of data

AmrCoder

I use a table view to view my item using QStandarditemModel and QStandareditem the I have 6230 row and 5 column I view it in the table it works fine but the problem start when I use this code to stretch the horizontal and fit to the content of vertical

void Quran::Extend()
{
    int gg = ui->tableView->horizontalHeader()->count();
    int ff = ui->tableView->verticalHeader()->count();
    for (int c = 0; c < gg; ++c)
    {
        ui->tableView->horizontalHeader()->setSectionResizeMode(c, QHeaderView::Stretch);
    }
    for (int i = 0; i < ff; i++) {
        ui->tableView->verticalHeader()->setSectionResizeMode(i, QHeaderView::ResizeToContents);
    }
}

i try this too

 ui->tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
 ui->tableView->verticalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);

but when i use this part of code it take about 15 second to view the model so i ask if theres a better (efficient) way to view this large number of data with this properties strecthed and resized to content of horizontal and vertical
thanks in advance

sierdzio

Three ideas (all can be combined, even):

while populating the view initially, store data on how wide and tall your cells should be (example: int maxWidth = qMax(maxWidth, currentCellWidth);), then use that number to manually set each column width and row height
only calculate row and column dimensions for visible items. It's unlikely your users will need to see all 6230 rows at once
use lazy initialization to only load parts of the data (see canFetchMore() and fetchMore() methods in Qt's abstract model classes)

AmrCoder

Thank you @sierdzio I solve this with the first one I calculate the maximum column length and width and set all a fixed width and column it loads the table view with 6230 row in 1 second