Function StartFireworks

Telegram/SourceFiles/ui/boxes/boost_box.cpp:311–327

} // namespace

void StartFireworks(not_null<QWidget*> parent) {
	const auto result = Ui::CreateChild<RpWidget>(parent.get());
	result->setAttribute(Qt::WA_TransparentForMouseEvents);
	result->setGeometry(parent->rect());
	result->show();

	auto &lifetime = result->lifetime();
	const auto animation = lifetime.make_state<FireworksAnimation>([=] {
		result->update();
	});
	result->paintRequest() | rpl::on_next([=] {
		auto p = QPainter(result);
		if (!animation->paint(p, result->rect())) {
			crl::on_main(result, [=] { delete result; });
		}
	}, lifetime);
}

void BoostBox(
		not_null<GenericBox*> box,