Method paintEvent

launcher/ui/instanceview/InstanceView.cpp:454–592

}

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

    QPainter painter(this->viewport());

    if (m_catVisible) {
        painter.setOpacity(APPLICATION->settings()->get("CatOpacity").toFloat() / 100);
        int widWidth = this->viewport()->width();
        int widHeight = this->viewport()->height();
        if (m_catPixmap.width() < widWidth)
            widWidth = m_catPixmap.width();
        if (m_catPixmap.height() < widHeight)
            widHeight = m_catPixmap.height();
        auto pixmap = m_catPixmap.scaled(widWidth, widHeight, Qt::KeepAspectRatio, Qt::SmoothTransformation);
        QRect rectOfPixmap = pixmap.rect();
        rectOfPixmap.moveBottomRight(this->viewport()->rect().bottomRight());
        painter.drawPixmap(rectOfPixmap.topLeft(), pixmap);
        painter.setOpacity(1.0);
    }

#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
    QStyleOptionViewItem option;
    initViewItemOption(&option);
#else
    QStyleOptionViewItem option = viewOptions();
#endif
    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;
        }