Method paintEvent

launcher/ui/instanceview/InstanceView.cpp:456–579

}

void InstanceView::paintEvent([[maybe_unused]] QPaintEvent* event)
{
    executeDelayedItemsLayout();

    QPainter painter(this->viewport());

    if (m_cat) {
        m_cat->paint(&painter, this->viewport()->rect());
    }

    QStyleOptionViewItem option;
    initViewItemOption(&option);
    option.widget = this;

    if (model()->rowCount() == 0) {
        painter.save();
        QString emptyString = tr("Welcome!") + "\n" + tr("Click \"Add Instance\" to get started.");

        // calculate the rect for the overlay
        painter.setRenderHint(QPainter::Antialiasing, true);
        QFont font("sans", 20);
        font.setBold(true);

        QRect bounds = viewport()->geometry();
        bounds.moveTop(0);
        auto innerBounds = bounds;
        innerBounds.adjust(10, 10, -10, -10);

        QColor background = QApplication::palette().color(QPalette::WindowText);
        QColor foreground = QApplication::palette().color(QPalette::Base);
        foreground.setAlpha(190);
        painter.setFont(font);
        auto fontMetrics = painter.fontMetrics();
        auto textRect = fontMetrics.boundingRect(innerBounds, Qt::AlignHCenter | Qt::TextWordWrap, emptyString);
        textRect.moveCenter(bounds.center());

        auto wrapRect = textRect;
        wrapRect.adjust(-10, -10, 10, 10);

        // check if we are allowed to draw in our area
        if (!event->rect().intersects(wrapRect)) {
            return;
        }

        painter.setBrush(QBrush(background));
        painter.setPen(foreground);
        painter.drawRoundedRect(wrapRect, 5.0, 5.0);

        painter.setPen(foreground);
        painter.setFont(font);
        painter.drawText(textRect, Qt::AlignHCenter | Qt::TextWordWrap, emptyString);

        painter.restore();
        return;
    }

    int wpWidth = viewport()->width();
    option.rect.setWidth(wpWidth);