QSqlQueryModel subclass && QLinearGradient in a cell



  • Hi all,
    I subclassed a QSqlQueryModel to change some color of a cell in a QTableView.

    This is my code:
    @
    QVariant CustomQueryModel::data(const QModelIndex &index, int role) const
    {
    switch(role)
    {
    case Qt::BackgroundRole:
    if(index.column()==8 && index.isValid())
    {
    QLinearGradient grad(0,0,1,0);
    grad.setCoordinateMode(QGradient::ObjectBoundingMode);
    grad.setColorAt(0.0, QColor(200,50,50));
    grad.setColorAt(0.5, QColor(50,200,50));
    grad.setColorAt(1.0, QColor(50,200,50));
    return QBrush(grad);
    }
    break;
    default:
    return QSqlQueryModel::data(index,role);
    }
    return QSqlQueryModel::data(index,role);
    }

    @

    As you can see I want a linear gradient in the cells on column 8.

    The problem is that the gradient isn't displayed, it only set the cell's color on QColor(200,50,50).
    The gradient is shown correctly if I set it on the column 1:
    @
    QVariant CustomQueryModel::data(const QModelIndex &index, int role) const
    {
    switch(role)
    {
    case Qt::BackgroundRole:
    if(index.column()==1 && index.isValid())
    {
    QLinearGradient grad(0,0,1,0);
    grad.setCoordinateMode(QGradient::ObjectBoundingMode);
    grad.setColorAt(0.0, QColor(200,50,50));
    grad.setColorAt(0.5, QColor(50,200,50));
    grad.setColorAt(1.0, QColor(50,200,50));
    return QBrush(grad);
    }
    break;
    default:
    return QSqlQueryModel::data(index,role);
    }
    return QSqlQueryModel::data(index,role);
    }
    @
    it seems to be a coordinates problem but I don't know how to solve it.

    Can you help me?

    Thanks


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