Method paintSticker

Telegram/SourceFiles/boxes/sticker_set_box.cpp:2264–2364

}

void StickerSetBox::Inner::paintSticker(
		Painter &p,
		int index,
		QPoint position,
		bool paused,
		crl::time now) const {
	if (_dragging.index != index) {
		const auto over = _elements[index].overAnimation.value(
			(index == _selected) ? 1. : 0.);
		if (over) {
			p.setOpacity(over);
			Ui::FillRoundRect(
				p,
				QRect(
					rtl()
						? QPoint(
							width() - position.x() - _singleSize.width(),
							position.y())
						: position,
					_singleSize),
				st::emojiPanHover,
				Ui::StickerHoverCorners);
			p.setOpacity(1);
		}
	}

	const auto hasShake = _shakeAnimation.animating();
	if (hasShake) {
		shakeTransform(p, index, position, now);
	}

	const auto &element = _elements[index];
	const auto document = element.document;
	const auto &media = element.documentMedia;
	const auto sticker = document->sticker();
	media->checkStickerSmall();

	if (sticker->setType == Data::StickersType::Emoji) {
		const_cast<Inner*>(this)->setupEmoji(index);
	} else if (media->loaded()) {
		if (sticker->isLottie() && !element.lottie) {
			const_cast<Inner*>(this)->setupLottie(index);
		} else if (sticker->isWebm() && !element.webm) {
			const_cast<Inner*>(this)->setupWebm(index);
		}
	}

	const auto premium = document->isPremiumSticker();
	const auto size = ChatHelpers::ComputeStickerSize(
		document,
		boundingBoxSize());
	const auto ppos = position + QPoint(
		(_singleSize.width() - size.width()) / 2,
		(_singleSize.height() - size.height()) / 2);
	auto lottieFrame = QImage();
	if (element.emoji) {
		element.emoji->paint(p, {
			.textColor = st::windowFg->c,