How do I display a picture on a QTableView cell?

[borisbn]

your program crashes, because you should write

QString imgFile = QSqlTableModel::data(idx, Qt::DisplayRole);

QString imgFile = QSqlTableModel::data(idx, Qt::DisplayRole);

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instead of

QString imgFile = idx.data().toString();

QString imgFile = idx.data().toString();

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try to exactly repeat my previous code...

QVariant PersonasModel::data(const QModelIndex &idx, int role) const
{
    if ( idx.column() == 5 )
    {
        QString imgFile = QSqlTableModel::data( idx, Qt::DisplayRole );
        if ( Qt::DisplayRole == role )
        {
            return QString();
        }
        if ( !QFile::exists( imgFile )
        {
            imgFile = ":/centinela/images/picture_unavailable.jpg";
        }
        QPixmap pixmap( imgFile );
        if ( role == Qt::DecorationRole )
        {
            return pixmap;
        }
        if(role == Qt::SizeHintRole)
        {
            return pixmap.size();
        }
    }
    return QSqlTableModel::data( idx, role );
}

QVariant PersonasModel::data(const QModelIndex &idx, int role) const
{
    if ( idx.column() == 5 )
    {
        QString imgFile = QSqlTableModel::data( idx, Qt::DisplayRole );
        if ( Qt::DisplayRole == role )
        {
            return QString();
        }
        if ( !QFile::exists( imgFile )
        {
            imgFile = ":/centinela/images/picture_unavailable.jpg";
        }
        QPixmap pixmap( imgFile );
        if ( role == Qt::DecorationRole )
        {
            return pixmap;
        }
        if(role == Qt::SizeHintRole)
        {
            return pixmap.size();
        }
    }
    return QSqlTableModel::data( idx, role );
}

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should I call QTableView::resizeRowsToContents() ?

honestly, I don't know. try ...

[danielperaza]

Worked great!, but there are still two little problems: 1) default picture is never rendered, 2) rows never acquire the required height, not even calling QTableView::resizeRowsToContents() nor without calling it.

[borisbn]

1)
Are you sure, that resource you use is available ?
try

QLabel * label = new QLabel( this );
label->setPixmap( QPixmap( ":/centinela/images/picture_unavailable.jpg" ) );

QLabel * label = new QLabel( this );
label->setPixmap( QPixmap( ":/centinela/images/picture_unavailable.jpg" ) );

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maybe your resource named :/centinela/images/picture_unavailable without .jpg ?


2)
try to comment out

if(role == Qt::SizeHintRole)
{
    return pixmap.size();
}

if(role == Qt::SizeHintRole)
{
    return pixmap.size();
}

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and call resizeRowsToContents

[danielperaza]

I was spelling the "image" part of my resource's path in english, but declaring it in spanish ("imagenes"), so that solves the first problem. However, I took into account your second advice, and nothing happened.

[danielperaza]

Please, does any body have any idea?