Custom QWidget with more than 2 controls including buttons inside QListView

[rsilva]

I want to put a QWidget inside QListView, tried with setItemWidget and not worked, but now I'm using QListView in a new project and need to do this.

It's a download list.

How can I do this ?

[Zlatomir]

QListView is a different thing from QListWidget which i assume you want to use because this one has setItemWidget.

[rsilva]

I've used the Widget before, but not worked, now I've started another project using QListView and want to do this using it. I'm trying to do this with delegates.

How I can calculate the sizes ?

I'm using this code but I don't think it's the best way:

void DownloadItemDelegate::paint(
    QPainter* painter,
    const QStyleOptionViewItem& option,
    const QModelIndex& index) const
{
    painter->drawText(option.rect.x() + 2, option.rect.y() + option.fontMetrics.height(), index.data(Qt::DisplayRole).toString());
 
    QStyleOptionProgressBarV2 sop;
    sop.state = QStyle::State_Enabled;
    sop.rect = option.rect.adjusted(2, option.fontMetrics.boundingRect(index.data(Qt::DisplayRole).toString()).height() + option.fontMetrics.height() / 2, -2, 0);
    sop.fontMetrics = option.fontMetrics;
    sop.minimum = 0;
    sop.maximum = 100;
    sop.progress = 50;
    sop.orientation = Qt::Horizontal;
    sop.textVisible = false;
 
    QApplication::style()->drawControl(QStyle::CE_ProgressBar, &sop, painter);
}
 
QSize DownloadItemDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const
{
    if (option.rect.width() == 0 || option.rect.height() == 0) return QSize();
 
    QSize size = option.rect.size();
    size.setHeight(option.fontMetrics.boundingRect(index.data(Qt::DisplayRole).toString()).height());
    size.setHeight(size.height() + 20);
 
    qDebug() << size.width() << "x" << size.height();
    return size;
}

void DownloadItemDelegate::paint(
    QPainter* painter,
    const QStyleOptionViewItem& option,
    const QModelIndex& index) const
{
    painter->drawText(option.rect.x() + 2, option.rect.y() + option.fontMetrics.height(), index.data(Qt::DisplayRole).toString());

    QStyleOptionProgressBarV2 sop;
    sop.state = QStyle::State_Enabled;
    sop.rect = option.rect.adjusted(2, option.fontMetrics.boundingRect(index.data(Qt::DisplayRole).toString()).height() + option.fontMetrics.height() / 2, -2, 0);
    sop.fontMetrics = option.fontMetrics;
    sop.minimum = 0;
    sop.maximum = 100;
    sop.progress = 50;
    sop.orientation = Qt::Horizontal;
    sop.textVisible = false;

    QApplication::style()->drawControl(QStyle::CE_ProgressBar, &sop, painter);
}

QSize DownloadItemDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const
{
    if (option.rect.width() == 0 || option.rect.height() == 0) return QSize();

    QSize size = option.rect.size();
    size.setHeight(option.fontMetrics.boundingRect(index.data(Qt::DisplayRole).toString()).height());
    size.setHeight(size.height() + 20);

    qDebug() << size.width() << "x" << size.height();
    return size;
}

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