protected function calculate_item_totals() {
		$this->get_items_from_cart();
		$this->calculate_item_subtotals();
		$this->calculate_discounts();

		foreach ( $this->items as $item_key => $item ) {
			$item->total     = $this->get_discounted_price_in_cents( $item_key );
			$item->total_tax = 0;

			if ( has_filter( 'woocommerce_get_discounted_price' ) ) {
				/**
				 * Allow plugins to filter this price like in the legacy cart class.
				 *
				 * This is legacy and should probably be deprecated in the future.
				 * $item->object is the cart item object.
				 * $this->cart is the cart object.
				 */
				$item->total = wc_add_number_precision(
					apply_filters( 'woocommerce_get_discounted_price', wc_remove_number_precision( $item->total ), $item->object, $this->cart )
				);
			}

			if ( $this->calculate_tax && $item->product->is_taxable() ) {
				$total_taxes     = apply_filters( 'woocommerce_calculate_item_totals_taxes', WC_Tax::calc_tax( $item->total, $item->tax_rates, $item->price_includes_tax ), $item, $this );
				$item->taxes     = $total_taxes;
				$item->total_tax = array_sum( array_map( array( $this, 'round_line_tax' ), $item->taxes ) );

				if ( $item->price_includes_tax ) {
					// Use unrounded taxes so we can re-calculate from the orders screen accurately later.
					$item->total = $item->total - array_sum( $item->taxes );
				}
			}

			$this->cart->cart_contents[ $item_key ]['line_tax_data']['total'] = wc_remove_number_precision_deep( $item->taxes );
			$this->cart->cart_contents[ $item_key ]['line_total']             = wc_remove_number_precision( $item->total );
			$this->cart->cart_contents[ $item_key ]['line_tax']               = wc_remove_number_precision( $item->total_tax );
		}

		$items_total = $this->get_rounded_items_total( $this->get_values_for_total( 'total' ) );

		$this->set_total( 'items_total', $items_total );
		$this->set_total( 'items_total_tax', array_sum( array_values( wp_list_pluck( $this->items, 'total_tax' ) ) ) );

		$this->cart->set_cart_contents_total( $this->get_total( 'items_total' ) );
		$this->cart->set_cart_contents_tax( array_sum( $this->get_merged_taxes( false, 'items' ) ) );
		$this->cart->set_cart_contents_taxes( $this->get_merged_taxes( false, 'items' ) );
	}