Method paintPaper

Telegram/SourceFiles/boxes/background_box.cpp:690–722

}

void BackgroundBox::Inner::paintPaper(
		QPainter &p,
		const Paper &paper,
		int column,
		int row) const {
	const auto x = st::backgroundPadding + column * (st::backgroundSize.width() + st::backgroundPadding);
	const auto y = st::backgroundPadding + row * (st::backgroundSize.height() + st::backgroundPadding);
	validatePaperThumbnail(paper);
	if (!paper.thumbnail.isNull()) {
		p.drawPixmap(x, y, paper.thumbnail);
	}

	const auto over = !v::is_null(_overDown) ? _overDown : _over;
	if (paper.data.id() == _currentId) {
		const auto checkLeft = x + st::backgroundSize.width() - st::overviewCheckSkip - st::overviewCheck.size;
		const auto checkTop = y + st::backgroundSize.height() - st::overviewCheckSkip - st::overviewCheck.size;
		_check->paint(p, checkLeft, checkTop, width());
	} else if (!forChannel()
		&& Data::IsCloudWallPaper(paper.data)
		&& !Data::IsDefaultWallPaper(paper.data)
		&& !Data::IsLegacy2DefaultWallPaper(paper.data)
		&& !Data::IsLegacy3DefaultWallPaper(paper.data)
		&& !v::is_null(over)
		&& (&paper == &_papers[getSelectionIndex(over)])) {
		const auto deleteSelected = v::is<DeleteSelected>(over);
		const auto deletePos = QPoint(x + st::backgroundSize.width() - st::stickerPanDeleteIconBg.width(), y);
		p.setOpacity(deleteSelected ? st::stickerPanDeleteOpacityBgOver : st::stickerPanDeleteOpacityBg);
		st::stickerPanDeleteIconBg.paint(p, deletePos, width());
		p.setOpacity(deleteSelected ? st::stickerPanDeleteOpacityFgOver : st::stickerPanDeleteOpacityFg);
		st::stickerPanDeleteIconFg.paint(p, deletePos, width());
		p.setOpacity(1.);
	}
}

void BackgroundBox::Inner::mouseMoveEvent(QMouseEvent *e) {
	const auto newOver = [&] {