Method showPopup

ElaWidgetTools/ElaMultiSelectComboBox.cpp:208–278

}

void ElaMultiSelectComboBox::showPopup()
{
    Q_D(ElaMultiSelectComboBox);
    bool oldAnimationEffects = qApp->isEffectEnabled(Qt::UI_AnimateCombo);
    qApp->setEffectEnabled(Qt::UI_AnimateCombo, false);
    QComboBox::showPopup();
    qApp->setEffectEnabled(Qt::UI_AnimateCombo, oldAnimationEffects);

    if (count() > 0)
    {
        QWidget* container = this->findChild<QFrame*>();
        if (container)
        {
            int containerHeight = 0;
            if (count() >= maxVisibleItems())
            {
                containerHeight = maxVisibleItems() * 35 + 8;
            }
            else
            {
                containerHeight = count() * 35 + 8;
            }
            view()->resize(view()->width(), containerHeight - 8);
            container->move(container->x(), container->y() + 3);
            QLayout* layout = container->layout();
            while (layout->count())
            {
                layout->takeAt(0);
            }
            QPropertyAnimation* fixedSizeAnimation = new QPropertyAnimation(container, "maximumHeight");
            connect(fixedSizeAnimation, &QPropertyAnimation::valueChanged, this, [=](const QVariant& value) {
                container->setFixedHeight(value.toUInt());
            });
            fixedSizeAnimation->setStartValue(1);
            fixedSizeAnimation->setEndValue(containerHeight);
            fixedSizeAnimation->setEasingCurve(QEasingCurve::OutCubic);
            fixedSizeAnimation->setDuration(400);
            fixedSizeAnimation->start(QAbstractAnimation::DeleteWhenStopped);

            QPropertyAnimation* viewPosAnimation = new QPropertyAnimation(view(), "pos");
            connect(viewPosAnimation, &QPropertyAnimation::finished, this, [=]() {
                d->_isAllowHidePopup = true;
                layout->addWidget(view());
            });
            QPoint viewPos = view()->pos();
            viewPosAnimation->setStartValue(QPoint(viewPos.x(), viewPos.y() - view()->height()));
            viewPosAnimation->setEndValue(viewPos);
            viewPosAnimation->setEasingCurve(QEasingCurve::OutCubic);
            viewPosAnimation->setDuration(400);
            viewPosAnimation->start(QAbstractAnimation::DeleteWhenStopped);
        }
        //指示器动画
        QPropertyAnimation* rotateAnimation = new QPropertyAnimation(d, "pExpandIconRotate");
        connect(rotateAnimation, &QPropertyAnimation::valueChanged, this, [=](const QVariant& value) {
            update();
        });
        rotateAnimation->setDuration(300);
        rotateAnimation->setEasingCurve(QEasingCurve::InOutSine);