Class FadingIndicatorPrivate

src/widgets/FadingIndicator.cpp:34–123

namespace Internal {

class FadingIndicatorPrivate : public QWidget
{
    Q_OBJECT

public:
    FadingIndicatorPrivate(QWidget *parent, FadingIndicator::TextSize size)
        : QWidget(parent)
    {
        setAttribute(Qt::WA_TransparentForMouseEvents, true);
        m_effect = new QGraphicsOpacityEffect(this);
        setGraphicsEffect(m_effect);
        m_effect->setOpacity(.999);

        m_label = new QLabel;
        QFont font = m_label->font();
        font.setPixelSize(size == FadingIndicator::LargeText ? 30 : 18);
        m_label->setFont(font);
        QPalette pal = palette();
        pal.setColor(QPalette::WindowText, pal.color(QPalette::Window));
        m_label->setPalette(pal);
        auto layout = new QHBoxLayout;
        setLayout(layout);
        layout->addWidget(m_label);
    }

    void setText(const QString &text)
    {
        m_pixmap = QPixmap();
        m_label->setText(text);
        m_effect->setOpacity(.6); // because of the fat opaque background color
        layout()->setSizeConstraint(QLayout::SetFixedSize);
        adjustSize();
        QWidget *parent = parentWidget();
        QPoint pos = parent ? (parent->rect().center() - rect().center()) : QPoint();
        if (pixmapIndicator && pixmapIndicator->geometry().intersects(QRect(pos, size())))
            pos.setY(pixmapIndicator->geometry().bottom() + 1);
        move(pos);
    }

    void setPixmap(const QString &uri)
    {
        m_label->hide();
        m_pixmap.load(uri);
        layout()->setSizeConstraint(QLayout::SetNoConstraint);
        resize(m_pixmap.size() / m_pixmap.devicePixelRatio());
        QWidget *parent = parentWidget();
        QPoint pos = parent ? (parent->rect().center() - rect().center()) : QPoint();
        if (textIndicator && textIndicator->geometry().intersects(QRect(pos, size())))
            pos.setY(textIndicator->geometry().bottom() + 1);
        move(pos);
    }

    void run(int ms)
    {
        show();
        raise();
        QTimer::singleShot(ms, this, &FadingIndicatorPrivate::runInternal);
    }