QTableView: rowAt() gives wrong row number (aim: right-cklick enabling)

[sedi]

Hi,
I have an ui->tableView (set up with designer) and subclassed a QStandardItemModel to attach it, along with aQSortFilterProxyModel.

I want to make the items right-cklickable for a context menu. It nearly works - apart from a very annoying offset in the heigth that amounts to roughly half of a row's height. When I right-click an item in it's bottom half, the item below is given back.

In the dialog's constructor:

this->proxyModel = new QSortFilterProxyModel();
    proxyModel->setSourceModel(fotoImport);   //foto Import is the model
    proxyModel->setDynamicSortFilter(true);
    ui->tableView->setModel(proxyModel);
    ui->tableView->resizeColumnsToContents();
    ui->tableView->resizeRowsToContents();
    ui->tableView->verticalHeader()->hide();
    ui->tableView->setSortingEnabled(true);

this->proxyModel = new QSortFilterProxyModel();
    proxyModel->setSourceModel(fotoImport);   //foto Import is the model
    proxyModel->setDynamicSortFilter(true);
    ui->tableView->setModel(proxyModel);
    ui->tableView->resizeColumnsToContents();
    ui->tableView->resizeRowsToContents();
    ui->tableView->verticalHeader()->hide();
    ui->tableView->setSortingEnabled(true);

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In the dialog's contextMenuEvent (QContextMenuEvent *e) I try this:

QPoint pos;
    pos=ui->tableView->mapFrom(this,e->pos());
    int row=ui->tableView->rowAt(pos.y());
    int column=ui->tableView->columnAt(pos.x());
    if (row==-1)return;
    if (column==-1)return;
    QModelIndex index=ui->tableView->indexAt(pos);
    QModelIndex proxyIndex;
    proxyIndex=this->proxyModel->mapToSource(index);
    qDebug()<<"map from this: "<<fotoImport->itemFromIndex(proxyIndex)->text();

QPoint pos;
    pos=ui->tableView->mapFrom(this,e->pos());
    int row=ui->tableView->rowAt(pos.y());
    int column=ui->tableView->columnAt(pos.x());
    if (row==-1)return;
    if (column==-1)return;
    QModelIndex index=ui->tableView->indexAt(pos);
    QModelIndex proxyIndex;
    proxyIndex=this->proxyModel->mapToSource(index);
    qDebug()<<"map from this: "<<fotoImport->itemFromIndex(proxyIndex)->text();

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It furthermore might be important that my model contains small pictures.

I've set them up this way in the model:

item->setData(myPixmap.scaledToHeight(50,Qt::SmoothTransformation),Qt::DecorationRole);

item->setData(myPixmap.scaledToHeight(50,Qt::SmoothTransformation),Qt::DecorationRole);

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Instead of
pos=ui->tableView->mapFrom(this,e->pos());
I've also tried
pos=ui->tableView->mapFromParent(e->pos());
which gives equal results and
pos=ui->tableView->mapFrom(ui->tableView, e->pos());

as well as all other mapFromXXX and mapToXXX possibilities.

The columnAt() works fine.

Any idea what I am doing wrong?

[wysota]

The position is given relative to the view's viewport(), not to the view itself. Thus the "annoying offset".

[sedi]

Smack dab in the middle, wysota - as usual. Thank you!

pos=ui->tableView->viewport()->mapFromGlobal(e->globalPos());

pos=ui->tableView->viewport()->mapFromGlobal(e->globalPos());

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did the trick.