BarcodeGenerator::matrix_calculate_size

private function matrix_calculate_size($code, $widths) {
	$width = (
		$code['q'][3] * $widths[0] +
		$code['s'][0] * $widths[1] +
		$code['q'][1] * $widths[0]
	);
	$height = (
		$code['q'][0] * $widths[0] +
		$code['s'][1] * $widths[1] +
		$code['q'][2] * $widths[0]
	);
	return array($width, $height);
}