How to set text color QTableView with QFileSystemModel in Qt?

Question

I use Qtableview to show file and folder (only show icon, filename, size). I want to paint text color(all text in row) for a few specific files.

Eg: file starts with 'ABC' is gray; 'XYZ' is red,...

Answer 1

Best practice is to use QIdentityProxyModel and override a data method for necessary roles. For example:

QVariant MyProxy::data(const QModelIndex &index, int role) const
{
  // Whatever you want in condition:
  if ( sourceModel()->data(index, Qt::TextRole).toString() == "SomeFile.txt" )
    switch( role )
    {
    case Qt::ForegroundRole: return Qt::Red;
    case Qt::BackgroundRole: return Qt::Blue; // or any brush, etc
    default:
      break;
    }

  return sourceModel()->data(role);
}

//...
MyProxy proxy = new MyProxy{};
proxy->setSourceModel( yourModel );
view->setModel( proxy );