Problem resizeing Qtablerow row hight

umen242

i have Qtableview with QSqlQueryModel as the model ( fatching data from sqlight)
and QStyledItemDelegate sub class as delegate for the items ,
i set the table like this : ( looking in the web for few suggestions ) .
but the method sizeHint never called ...

@//did this also but its not working
//QHeaderView* headerView = ui->PList_tableView->horizontalHeader();
//headerView->setResizeMode(QHeaderView::ResizeToContents);

m_pMiniItemDelegate =new MiniItemDelegate(this);
ui->PList_tableView->setSelectionBehavior(QAbstractItemView::SelectRows);
ui->PList_tableView->setSelectionMode(QAbstractItemView::SingleSelection);
ui->PList_tableView->setItemDelegate(m_pMiniItemDelegate);
ui->PList_tableView->setAlternatingRowColors(true);
ui->PList_tableView->setModel(ListMiniSqlModel::instance());
//also not work
ui->PList_tableView->resizeColumnsToContents();
ui->PList_tableView->resizeRowsToContents();

// MiniItemDelegate sizeHint
// this method never called if i set break point

QSize MiniItemDelegate::sizeHint(const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
//just for testing
return QSize( 256,256);

// return QStyledItemDelegate::sizeHint(option, index);

}@

kunashir

If I right - resizeColumnsToContents() and resizeRowsToContents() work with role SizeHintRole in model, and I suggest You may redefine data () for model.

umen242

i sub class QStyledItemDelegate , there is no data() method to inherit
how can i set the Qt::SizeHintRole?

kunashir

I may mistakes but delegate is not it! I use delegate too, but for resize I set my model:

@
class CDrugInfoModel : public QAbstractTableModel;

.....

QVariant CDrugInfoModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant ();
if (role == Qt::EditRole || role == Qt::DisplayRole)
{
// if (index.column() == 0)
return catalog->getData(index.row(), index.column());

    //return catalog->getAttr(catalog->getNameAttrs(index.row()));
}
else if (role == Qt::FontRole)
{
    return  CProgSettings::getFont();//QFont ("Tahoma", 15);
}
else if (role == Qt::ToolTipRole)
{
    return catalog->getData(index.row(), index.column());
}

// else if (role == Qt::BackgroundColorRole)
// return QColor(255, 255, 255);
if (role == Qt::SizeHintRole)
{
/ / Calculate the best size
/ / max length of 200, if more, then transfer the
//QFont f ("Tahoma", 15);
if (index.column() == 0)
return QSize(300, 35);
double maxWidth = 800.00;
// if (index.column() == 2 )
// maxWidth = 50;
// else if ( index.column() == 7)
// maxWidth = 170;

    QFontMetrics fm (CProgSettings::getFont());
    QString text = catalog->getData(index.row(), index.column()).toString(); //listItem->getVal(index.row(), index.column()).toString();
    //qDebug()<<text;
    bool singleWord = false;
    if (text.indexOf(" ") == -1)
        singleWord  = true;

    int w = fm.width (text) + 20 ;
    int h = fm.height();
    if (w > maxWidth && w < (maxWidth + 5))
        maxWidth = w;

// if (index.column() == 1)
// return QSize (100, h2);
// if (w > 400)
// text = "";
if ( (w/maxWidth) > 1 && !singleWord)
{
double ost = w / maxWidth;
h = h(ost + 2); //(w/200);
w = maxWidth;
}
return QSize (w + 50, h);
}
return QVariant ();
}@

umen242

Thanks for the fast reply but ..
when i set simple test just to see if the role == Qt::SizeHintRole ever getting there
(using break point ) it never gets there . never entring to the if (role == Qt::SizeHintRole)
this is how it looks only for testing ....

@QVariant ListMiniSqlModel::data(const QModelIndex &index, int role) const
{
QVariant value;
value = QSqlQueryModel::data(index, role);

if (role == Qt::SizeHintRole)
{
return QSize (100,100); // never gets here ....
}
return value;
}@

by the way the data is presented great so its working