Method sizeHint

src/plugins/reversedebug/taskwindow.cpp:690–747

}

QSize TaskDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    QStyleOptionViewItem opt = option;
    initStyleOption(&opt, index);

    const QAbstractItemView * view = qobject_cast<const QAbstractItemView *>(opt.widget);
    const bool selected = (view->selectionModel()->currentIndex() == index);
    QSize s;
    s.setWidth(option.rect.width());

    if (!selected && option.font == m_cachedFont && m_cachedHeight > 0) {
        s.setHeight(m_cachedHeight);
        return s;
    }

    QFontMetrics fm(option.font);
    int fontHeight = fm.height();
    int fontLeading = fm.leading();

    TaskModel *model = static_cast<TaskFilterModel *>(view->model())->taskModel();
    Positions positions(option, model);

    if (selected) {
        QString description = index.data(TaskModel::Description).toString();
        description += QLatin1Char('\n');
        description += index.data(TaskModel::ExtraInfo).toString();
        // Layout the description
        int leading = fontLeading;
        int height = 0;
        description.replace(QLatin1Char('\n'), QChar::LineSeparator);
        QTextLayout tl(description);
        // TODO: tl.setAdditionalFormats(...);
        tl.beginLayout();
        while (true) {
            QTextLine line = tl.createLine();
            if (!line.isValid())
                break;
            line.setLineWidth(positions.textAreaWidth());
            height += leading;
            line.setPosition(QPoint(0, height));
            height += static_cast<int>(line.height());
        }
        tl.endLayout();

        s.setHeight(height + leading + fontHeight + 3);
    } else {
        s.setHeight(fontHeight + 3);
    }
    if (s.height() < positions.minimumHeight())
        s.setHeight(positions.minimumHeight());

    if (!selected) {
        m_cachedHeight = s.height();
        m_cachedFont = option.font;
    }

    return s;
}