PHP Mage_Sales_Model_Quote_Item_Abstract::setTaxPercent方法代码示例

 /**
  * Calculate item price and row total including/excluding tax based on total price rounding level
  *
  * @param Mage_Sales_Model_Quote_Item_Abstract $item
  * @param Varien_Object $request
  *
  * @return Mage_Tax_Model_Sales_Total_Quote_Subtotal
  */
 protected function _totalBaseCalculation($item, $request)
 {
     $calc = $this->_calculator;
     $request->setProductClassId($item->getProduct()->getTaxClassId());
     $rate = $calc->getRate($request);
     $qty = $item->getTotalQty();
     $price = $taxPrice = $this->_calculator->round($item->getCalculationPriceOriginal());
     $basePrice = $baseTaxPrice = $this->_calculator->round($item->getBaseCalculationPriceOriginal());
     $subtotal = $taxSubtotal = $this->_calculator->round($item->getRowTotal());
     $baseSubtotal = $baseTaxSubtotal = $this->_calculator->round($item->getBaseRowTotal());
     // if we have a custom price, determine if tax should be based on the original price
     $taxOnOrigPrice = !$this->_helper->applyTaxOnCustomPrice($this->_store) && $item->hasCustomPrice();
     if ($taxOnOrigPrice) {
         $origSubtotal = $item->getOriginalPrice() * $qty;
         $baseOrigSubtotal = $item->getBaseOriginalPrice() * $qty;
     }
     $item->setTaxPercent($rate);
     if ($this->_config->priceIncludesTax($this->_store)) {
         if ($this->_sameRateAsStore($request)) {
             // determine which price to use when we calculate the tax
             if ($taxOnOrigPrice) {
                 $taxable = $origSubtotal;
                 $baseTaxable = $baseOrigSubtotal;
             } else {
                 $taxable = $subtotal;
                 $baseTaxable = $baseSubtotal;
             }
             $rowTaxExact = $calc->calcTaxAmount($taxable, $rate, true, false);
             $rowTax = $this->_deltaRound($rowTaxExact, $rate, true);
             $baseRowTaxExact = $calc->calcTaxAmount($baseTaxable, $rate, true, false);
             $baseRowTax = $this->_deltaRound($baseRowTaxExact, $rate, true, 'base');
             $taxPrice = $price;
             $baseTaxPrice = $basePrice;
             $taxSubtotal = $subtotal;
             $baseTaxSubtotal = $baseSubtotal;
             $subtotal = $subtotal - $rowTax;
             $baseSubtotal = $baseSubtotal - $baseRowTax;
             $price = $calc->round($subtotal / $qty);
             $basePrice = $calc->round($baseSubtotal / $qty);
             $isPriceInclTax = true;
             //Save the tax calculated
             $item->setRowTax($rowTax);
             $item->setBaseRowTax($baseRowTax);
         } else {
             $storeRate = $calc->getStoreRate($request, $this->_store);
             if ($taxOnOrigPrice) {
                 // the merchant already provided a customer's price that includes tax
                 $taxPrice = $price;
                 $baseTaxPrice = $basePrice;
                 // determine which price to use when we calculate the tax
                 $taxable = $this->_calculatePriceInclTax($item->getOriginalPrice(), $storeRate, $rate);
                 $baseTaxable = $this->_calculatePriceInclTax($item->getBaseOriginalPrice(), $storeRate, $rate);
             } else {
                 // determine the customer's price that includes tax
                 $taxPrice = $this->_calculatePriceInclTax($price, $storeRate, $rate);
                 $baseTaxPrice = $this->_calculatePriceInclTax($basePrice, $storeRate, $rate);
                 // determine which price to use when we calculate the tax
                 $taxable = $taxPrice;
                 $baseTaxable = $baseTaxPrice;
             }
             // determine the customer's tax amount based on the taxable price
             $tax = $this->_calculator->calcTaxAmount($taxable, $rate, true, true);
             $baseTax = $this->_calculator->calcTaxAmount($baseTaxable, $rate, true, true);
             // determine the customer's price without taxes
             $price = $taxPrice - $tax;
             $basePrice = $baseTaxPrice - $baseTax;
             // determine subtotal amounts
             $taxable *= $qty;
             $baseTaxable *= $qty;
             $taxSubtotal = $taxPrice * $qty;
             $baseTaxSubtotal = $baseTaxPrice * $qty;
             $rowTax = $this->_deltaRound($calc->calcTaxAmount($taxable, $rate, true, false), $rate, true);
             $baseRowTax = $this->_deltaRound($calc->calcTaxAmount($baseTaxable, $rate, true, false), $rate, true, 'base');
             $subtotal = $taxSubtotal - $rowTax;
             $baseSubtotal = $baseTaxSubtotal - $baseRowTax;
             $isPriceInclTax = true;
             $item->setRowTax($rowTax);
             $item->setBaseRowTax($baseRowTax);
         }
     } else {
         // determine which price to use when we calculate the tax
         if ($taxOnOrigPrice) {
             $taxable = $origSubtotal;
             $baseTaxable = $baseOrigSubtotal;
         } else {
             $taxable = $subtotal;
             $baseTaxable = $baseSubtotal;
         }
         $appliedRates = $this->_calculator->getAppliedRates($request);
         $rowTaxes = array();
         $baseRowTaxes = array();
         foreach ($appliedRates as $appliedRate) {
//.........这里部分代码省略.........

 /**
  * Aggregate row totals per tax rate in array
  *
  * @param   Mage_Sales_Model_Quote_Item_Abstract $item
  * @param   float $rate
  * @param   array $taxGroups
  * @return  Mage_Tax_Model_Sales_Total_Quote
  */
 protected function _aggregateTaxPerRate($item, $rate, &$taxGroups)
 {
     $inclTax = $item->getIsPriceInclTax();
     $rateKey = (string) $rate;
     $taxSubtotal = $subtotal = $item->getTaxableAmount() + $item->getExtraRowTaxableAmount();
     $baseTaxSubtotal = $baseSubtotal = $item->getBaseTaxableAmount() + $item->getBaseExtraRowTaxableAmount();
     $item->setTaxPercent($rate);
     if (!isset($taxGroups[$rateKey]['totals'])) {
         $taxGroups[$rateKey]['totals'] = array();
         $taxGroups[$rateKey]['base_totals'] = array();
     }
     $hiddenTax = null;
     $baseHiddenTax = null;
     switch ($this->_helper->getCalculationSequence($this->_store)) {
         case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_EXCL:
         case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_INCL:
             $rowTax = $this->_calculator->calcTaxAmount($subtotal, $rate, $inclTax, false);
             $baseRowTax = $this->_calculator->calcTaxAmount($baseSubtotal, $rate, $inclTax, false);
             break;
         case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_EXCL:
         case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_INCL:
             if ($this->_helper->applyTaxOnOriginalPrice($this->_store)) {
                 $discount = $item->getOriginalDiscountAmount();
                 $baseDiscount = $item->getBaseOriginalDiscountAmount();
             } else {
                 $discount = $item->getDiscountAmount();
                 $baseDiscount = $item->getBaseDiscountAmount();
             }
             $taxSubtotal = max($subtotal - $discount, 0);
             $baseTaxSubtotal = max($baseSubtotal - $baseDiscount, 0);
             $rowTax = $this->_calculator->calcTaxAmount($taxSubtotal, $rate, $inclTax, false);
             $baseRowTax = $this->_calculator->calcTaxAmount($baseTaxSubtotal, $rate, $inclTax, false);
             if ($inclTax && $discount > 0) {
                 $hiddenTax = $this->_calculator->calcTaxAmount($discount, $rate, $inclTax, false);
                 $baseHiddenTax = $this->_calculator->calcTaxAmount($baseDiscount, $rate, $inclTax, false);
                 $this->_hiddenTaxes[] = array('rate_key' => $rateKey, 'qty' => 1, 'item' => $item, 'value' => $hiddenTax, 'base_value' => $baseHiddenTax, 'incl_tax' => $inclTax);
             }
             break;
     }
     $rowTax = $this->_deltaRound($rowTax, $rateKey, $inclTax);
     $baseRowTax = $this->_deltaRound($baseRowTax, $rateKey, $inclTax, 'base');
     $item->setTaxAmount(max(0, $rowTax));
     $item->setBaseTaxAmount(max(0, $baseRowTax));
     $taxGroups[$rateKey]['totals'][] = max(0, $taxSubtotal);
     $taxGroups[$rateKey]['base_totals'][] = max(0, $baseTaxSubtotal);
     return $this;
 }

 /**
  * Aggregate row totals per tax rate in array
  *
  * @param   Mage_Sales_Model_Quote_Item_Abstract $item
  * @param   float $rate
  * @param   array $taxGroups
  * @return  Mage_Tax_Model_Sales_Total_Quote
  */
 protected function _aggregateTaxPerRate($item, $rate, &$taxGroups)
 {
     $inclTax = $item->getIsPriceInclTax();
     $rateKey = (string) $rate;
     $subtotal = $item->getTaxableAmount() + $item->getExtraRowTaxableAmount();
     $baseSubtotal = $item->getBaseTaxableAmount() + $item->getBaseExtraRowTaxableAmount();
     $item->setTaxPercent($rate);
     if (!isset($taxGroups[$rateKey]['totals'])) {
         $taxGroups[$rateKey]['totals'] = array();
         $taxGroups[$rateKey]['base_totals'] = array();
     }
     $hiddenTax = null;
     $baseHiddenTax = null;
     switch ($this->_helper->getCalculationSequence($this->_store)) {
         case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_EXCL:
         case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_INCL:
             $rowTax = $this->_calculator->calcTaxAmount($subtotal, $rate, $inclTax, false);
             $baseRowTax = $this->_calculator->calcTaxAmount($baseSubtotal, $rate, $inclTax, false);
             break;
         case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_EXCL:
         case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_INCL:
             $discount = $item->getDiscountAmount();
             $baseDiscount = $item->getBaseDiscountAmount();
             $subtotal -= $discount;
             $baseSubtotal -= $baseDiscount;
             $rowTax = $this->_calculator->calcTaxAmount($subtotal, $rate, $inclTax, false);
             $baseRowTax = $this->_calculator->calcTaxAmount($baseSubtotal, $rate, $inclTax, false);
             break;
     }
     $rowTax = $this->_deltaRound($rowTax, $rateKey, $inclTax);
     $baseRowTax = $this->_deltaRound($baseRowTax, $rateKey, $inclTax, 'base');
     if ($inclTax && !empty($discount)) {
         $hiddenTax = $item->getRowTotalInclTax() - $item->getRowTotal() - $rowTax;
         $baseHiddenTax = $item->getBaseRowTotalInclTax() - $item->getBaseRowTotal() - $baseRowTax;
     }
     $item->setTaxAmount(max(0, $rowTax));
     $item->setBaseTaxAmount(max(0, $baseRowTax));
     $item->setHiddenTaxAmount(max(0, $hiddenTax));
     $item->setBaseHiddenTaxAmount(max(0, $baseHiddenTax));
     $taxGroups[$rateKey]['totals'][] = max(0, $subtotal);
     $taxGroups[$rateKey]['base_totals'][] = max(0, $baseSubtotal);
     return $this;
 }

 /**
  *
  * @param Mage_Sales_Model_Quote_Item_Abstract $item
  * @param Varien_Object $taxRateRequest
  * @param array $taxGroups
  * @param array $itemTaxGroups
  * @param boolean $catalogPriceInclTax
  */
 protected function _totalBaseProcessItemTax($item, $taxRateRequest, &$taxGroups, &$itemTaxGroups, $catalogPriceInclTax)
 {
     $taxRateRequest->setProductClassId($item->getProduct()->getTaxClassId());
     $rate = $this->_calculator->getRate($taxRateRequest);
     $item->setTaxAmount(0);
     $item->setBaseTaxAmount(0);
     $item->setHiddenTaxAmount(0);
     $item->setBaseHiddenTaxAmount(0);
     $item->setTaxPercent($rate);
     $item->setDiscountTaxCompensation(0);
     $rowTotalInclTax = $item->getRowTotalInclTax();
     $recalculateRowTotalInclTax = false;
     if (!isset($rowTotalInclTax)) {
         $item->setRowTotalInclTax($item->getTaxableAmount());
         $item->setBaseRowTotalInclTax($item->getBaseTaxableAmount());
         $recalculateRowTotalInclTax = true;
     }
     $appliedRates = $this->_calculator->getAppliedRates($taxRateRequest);
     if ($catalogPriceInclTax) {
         $taxGroups[(string) $rate]['applied_rates'] = $appliedRates;
         $taxGroups[(string) $rate]['incl_tax'] = $item->getIsPriceInclTax();
         $this->_aggregateTaxPerRate($item, $rate, $taxGroups);
     } else {
         //need to calculate each tax separately
         foreach ($appliedRates as $appliedTax) {
             $taxId = $appliedTax['id'];
             $taxRate = $appliedTax['percent'];
             $taxGroups[$taxId]['applied_rates'] = array($appliedTax);
             $taxGroups[$taxId]['incl_tax'] = $item->getIsPriceInclTax();
             $this->_aggregateTaxPerRate($item, $taxRate, $taxGroups, $taxId, $recalculateRowTotalInclTax);
         }
         //We need to calculate weeeAmountInclTax using multiple tax rate here
         //because the _calculateWeeeTax and _calculateRowWeeeTax only take one tax rate
         if ($this->_weeeHelper->isEnabled() && $this->_weeeHelper->isTaxable()) {
             $this->_calculateWeeeAmountInclTax($item, $appliedRates, false);
             $this->_calculateWeeeAmountInclTax($item, $appliedRates, true);
         }
     }
     if ($rate > 0) {
         $itemTaxGroups[$item->getId()] = $appliedRates;
     }
     return;
 }

 /**
  * Calculate item price and row total including/excluding tax based on total price rounding level
  *
  * @param Mage_Sales_Model_Quote_Item_Abstract $item
  * @param Varien_Object $request
  * @return Mage_Tax_Model_Sales_Total_Quote_Subtotal
  */
 protected function _totalBaseCalculation($item, $request)
 {
     $calc = $this->_calculator;
     $request->setProductClassId($item->getProduct()->getTaxClassId());
     $rate = $calc->getRate($request);
     $qty = $item->getTotalQty();
     $price = $taxPrice = $item->getCalculationPriceOriginal();
     $basePrice = $baseTaxPrice = $item->getBaseCalculationPriceOriginal();
     $subtotal = $taxSubtotal = $item->getRowTotal();
     $baseSubtotal = $baseTaxSubtotal = $item->getBaseRowTotal();
     $taxOnOrigPrice = !$this->_helper->applyTaxOnCustomPrice($this->_store) && $item->hasCustomPrice();
     if ($taxOnOrigPrice) {
         $origSubtotal = $item->getOriginalPrice() * $qty;
         $baseOrigSubtotal = $item->getBaseOriginalPrice() * $qty;
     }
     $item->setTaxPercent($rate);
     if ($this->_config->priceIncludesTax($this->_store)) {
         if ($this->_sameRateAsStore($request)) {
             if ($taxOnOrigPrice) {
                 $rowTax = $this->_deltaRound($calc->calcTaxAmount($origSubtotal, $rate, true, false), $rate, true);
                 $baseRowTax = $this->_deltaRound($calc->calcTaxAmount($baseOrigSubtotal, $rate, true, false), $rate, true, 'base');
                 $taxable = $origSubtotal;
                 $baseTaxable = $baseOrigSubtotal;
             } else {
                 $rowTax = $this->_deltaRound($calc->calcTaxAmount($subtotal, $rate, true, false), $rate, true);
                 $baseRowTax = $this->_deltaRound($calc->calcTaxAmount($baseSubtotal, $rate, true, false), $rate, true, 'base');
                 $taxable = $subtotal;
                 $baseTaxable = $baseSubtotal;
             }
             $taxPrice = $price;
             $baseTaxPrice = $basePrice;
             $taxSubtotal = $subtotal;
             $baseTaxSubtotal = $baseSubtotal;
             $subtotal = $subtotal - $rowTax;
             $baseSubtotal = $baseSubtotal - $baseRowTax;
             $price = $calc->round($subtotal / $qty);
             $basePrice = $calc->round($baseSubtotal / $qty);
             $isPriceInclTax = true;
         } else {
             $storeRate = $calc->getStoreRate($request, $this->_store);
             if ($taxOnOrigPrice) {
                 $storeTax = $calc->calcTaxAmount($origSubtotal, $storeRate, true, false);
                 $baseStoreTax = $calc->calcTaxAmount($baseOrigSubtotal, $storeRate, true, false);
             } else {
                 $storeTax = $calc->calcTaxAmount($subtotal, $storeRate, true, false);
                 $baseStoreTax = $calc->calcTaxAmount($baseSubtotal, $storeRate, true, false);
             }
             $subtotal = $calc->round($subtotal - $storeTax);
             $baseSubtotal = $calc->round($baseSubtotal - $baseStoreTax);
             $price = $calc->round($subtotal / $qty);
             $basePrice = $calc->round($baseSubtotal / $qty);
             $rowTax = $this->_deltaRound($calc->calcTaxAmount($subtotal, $rate, false, false), $rate, true);
             $baseRowTax = $this->_deltaRound($calc->calcTaxAmount($baseSubtotal, $rate, false, false), $rate, true, 'base');
             $taxSubtotal = $subtotal + $rowTax;
             $baseTaxSubtotal = $baseSubtotal + $baseRowTax;
             $taxPrice = $calc->round($taxSubtotal / $qty);
             $baseTaxPrice = $calc->round($baseTaxSubtotal / $qty);
             $taxable = $subtotal;
             $baseTaxable = $baseSubtotal;
             $isPriceInclTax = false;
         }
     } else {
         if ($taxOnOrigPrice) {
             $rowTax = $this->_deltaRound($calc->calcTaxAmount($origSubtotal, $rate, false, false), $rate, true);
             $baseRowTax = $this->_deltaRound($calc->calcTaxAmount($baseOrigSubtotal, $rate, false, false), $rate, true, 'base');
             $taxable = $origSubtotal;
             $baseTaxable = $baseOrigSubtotal;
         } else {
             $rowTax = $this->_deltaRound($calc->calcTaxAmount($subtotal, $rate, false, false), $rate, true);
             $baseRowTax = $this->_deltaRound($calc->calcTaxAmount($baseSubtotal, $rate, false, false), $rate, true, 'base');
             $taxable = $subtotal;
             $baseTaxable = $baseSubtotal;
         }
         $taxSubtotal = $subtotal + $rowTax;
         $baseTaxSubtotal = $baseSubtotal + $baseRowTax;
         $taxPrice = $calc->round($taxSubtotal / $qty);
         $baseTaxPrice = $calc->round($baseTaxSubtotal / $qty);
         $isPriceInclTax = false;
     }
     if ($item->hasCustomPrice()) {
         /**
          * Initialize item original price before declaring custom price
          */
         $item->getOriginalPrice();
         $item->setCustomPrice($price);
         $item->setBaseCustomPrice($basePrice);
     } else {
         $item->setConvertedPrice($price);
     }
     $item->setPrice($basePrice);
     $item->setBasePrice($basePrice);
     $item->setRowTotal($subtotal);
     $item->setBaseRowTotal($baseSubtotal);
//.........这里部分代码省略.........

 /**
  * Aggregate row totals per tax rate in array
  *
  * @param   Mage_Sales_Model_Quote_Item_Abstract $item
  * @param   float $rate
  * @param   array $taxGroups
  * @return  Mage_Tax_Model_Sales_Total_Quote
  */
 protected function _aggregateTaxPerRate($item, $rate, &$taxGroups)
 {
     $store = $item->getStore();
     $inclTax = $this->_usePriceIncludeTax($store);
     if ($inclTax) {
         $subtotal = $item->getTaxCalcRowTotal();
         $baseSubtotal = $item->getBaseTaxCalcRowTotal();
     } else {
         if ($item->hasCustomPrice() && $this->_helper->applyTaxOnCustomPrice($store)) {
             $subtotal = $item->getRowTotal();
             $baseSubtotal = $item->getBaseRowTotal();
         } else {
             $subtotal = $item->getTotalQty() * $item->getOriginalPrice();
             $baseSubtotal = $item->getTotalQty() * $item->getBaseOriginalPrice();
         }
     }
     $discountAmount = $item->getDiscountAmount();
     $baseDiscountAmount = $item->getBaseDiscountAmount();
     $qty = $item->getTotalQty();
     $rateKey = (string) $rate;
     /**
      * Add extra amounts which can be taxable too
      */
     $calcTotal = $subtotal + $item->getExtraRowTaxableAmount();
     $baseCalcTotal = $baseSubtotal + $item->getBaseExtraRowTaxableAmount();
     $item->setTaxPercent($rate);
     if (!isset($taxGroups[$rateKey]['totals'])) {
         $taxGroups[$rateKey]['totals'] = array();
     }
     if (!isset($taxGroups[$rateKey]['totals'])) {
         $taxGroups[$rateKey]['base_totals'] = array();
     }
     $calculationSequence = $this->_helper->getCalculationSequence($store);
     switch ($calculationSequence) {
         case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_EXCL:
             $rowTax = $this->_calculator->calcTaxAmount($calcTotal, $rate, $inclTax, false);
             $baseRowTax = $this->_calculator->calcTaxAmount($baseCalcTotal, $rate, $inclTax, false);
             break;
         case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_INCL:
             $rowTax = $this->_calculator->calcTaxAmount($calcTotal, $rate, $inclTax, false);
             $baseRowTax = $this->_calculator->calcTaxAmount($baseCalcTotal, $rate, $inclTax, false);
             $discountPrice = $inclTax ? $subtotal / $qty : ($subtotal + $rowTax) / $qty;
             $baseDiscountPrice = $inclTax ? $baseSubtotal / $qty : ($baseSubtotal + $baseRowTax) / $qty;
             $item->setDiscountCalculationPrice($discountPrice);
             $item->setBaseDiscountCalculationPrice($baseDiscountPrice);
             break;
         case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_EXCL:
         case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_INCL:
             $calcTotal = $calcTotal - $discountAmount;
             $baseCalcTotal = $baseCalcTotal - $baseDiscountAmount;
             $rowTax = $this->_calculator->calcTaxAmount($calcTotal, $rate, $inclTax, false);
             $baseRowTax = $this->_calculator->calcTaxAmount($baseCalcTotal, $rate, $inclTax, false);
             break;
     }
     /**
      * "Delta" rounding
      */
     $delta = isset($this->_roundingDeltas[$rateKey]) ? $this->_roundingDeltas[$rateKey] : 0;
     $baseDelta = isset($this->_baseRoundingDeltas[$rateKey]) ? $this->_baseRoundingDeltas[$rateKey] : 0;
     $rowTax += $delta;
     $baseRowTax += $baseDelta;
     $this->_roundingDeltas[$rateKey] = $rowTax - $this->_calculator->round($rowTax);
     $this->_baseRoundingDeltas[$rateKey] = $baseRowTax - $this->_calculator->round($baseRowTax);
     $rowTax = $this->_calculator->round($rowTax);
     $baseRowTax = $this->_calculator->round($baseRowTax);
     /**
      * Renew item amounts in case if we are working with price include tax
      */
     if ($inclTax) {
         $unitTax = $this->_calculator->round($rowTax / $qty);
         $baseUnitTax = $this->_calculator->round($baseRowTax / $qty);
         if ($item->hasCustomPrice()) {
             $item->setCustomPrice($item->getPriceInclTax() - $unitTax);
             $item->setBaseCustomPrice($item->getBasePriceInclTax() - $baseUnitTax);
         } else {
             $item->setOriginalPrice($item->getPriceInclTax() - $unitTax);
             $item->setPrice($item->getBasePriceInclTax() - $baseUnitTax);
             $item->setBasePrice($item->getBasePriceInclTax() - $baseUnitTax);
         }
         $item->setRowTotal($item->getRowTotalInclTax() - $rowTax);
         $item->setBaseRowTotal($item->getBaseRowTotalInclTax() - $baseRowTax);
     }
     $item->setTaxAmount($rowTax);
     $item->setBaseTaxAmount($baseRowTax);
     $taxGroups[$rateKey]['totals'][] = $calcTotal;
     $taxGroups[$rateKey]['base_totals'][] = $baseCalcTotal;
     return $this;
 }

 /**
  * Aggregate row totals per tax rate in array
  *
  * @param   Mage_Sales_Model_Quote_Item_Abstract $item
  * @param   float $rate
  * @param   array $taxGroups
  * @return  Mage_Tax_Model_Sales_Total_Quote
  */
 protected function _aggregateTaxPerRate($item, $rate, &$taxGroups)
 {
     $inclTax = $item->getIsPriceInclTax();
     $rateKey = (string) $rate;
     $taxSubtotal = $subtotal = $item->getTaxableAmount();
     $baseTaxSubtotal = $baseSubtotal = $item->getBaseTaxableAmount();
     $isWeeeEnabled = $this->_weeeHelper->isEnabled();
     $isWeeeTaxable = $this->_weeeHelper->isTaxable();
     $item->setTaxPercent($rate);
     if (!isset($taxGroups[$rateKey]['totals'])) {
         $taxGroups[$rateKey]['totals'] = array();
         $taxGroups[$rateKey]['base_totals'] = array();
         $taxGroups[$rateKey]['weee_tax'] = array();
         $taxGroups[$rateKey]['base_weee_tax'] = array();
     }
     $hiddenTax = null;
     $baseHiddenTax = null;
     switch ($this->_helper->getCalculationSequence($this->_store)) {
         case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_EXCL:
         case Mage_Tax_Model_Calculation::CALC_TAX_BEFORE_DISCOUNT_ON_INCL:
             $rowTax = $this->_calculator->calcTaxAmount($subtotal, $rate, $inclTax, false);
             $baseRowTax = $this->_calculator->calcTaxAmount($baseSubtotal, $rate, $inclTax, false);
             if ($isWeeeEnabled && $isWeeeTaxable) {
                 $weeeTax = $item->getWeeeTaxAppliedRowAmount() * $rate / 100;
                 $baseWeeeTax = $item->getBaseWeeeTaxAppliedRowAmount() * $rate / 100;
                 $rowTax += $weeeTax;
                 $baseRowTax += $baseWeeeTax;
                 $taxGroups[$rateKey]['weee_tax'][] = $this->_deltaRound($weeeTax, $rateKey, $inclTax);
                 $taxGroups[$rateKey]['base_weee_tax'][] = $this->_deltaRound($baseWeeeTax, $rateKey, $inclTax);
             }
             break;
         case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_EXCL:
         case Mage_Tax_Model_Calculation::CALC_TAX_AFTER_DISCOUNT_ON_INCL:
             if ($this->_helper->applyTaxOnOriginalPrice($this->_store)) {
                 $discount = $item->getOriginalDiscountAmount();
                 $baseDiscount = $item->getBaseOriginalDiscountAmount();
             } else {
                 $discount = $item->getDiscountAmount();
                 $baseDiscount = $item->getBaseDiscountAmount();
             }
             //weee discount should be removed when calculating hidden tax
             if ($isWeeeEnabled) {
                 $discount = $discount - $item->getWeeeDiscount();
                 $baseDiscount = $baseDiscount - $item->getBaseWeeeDiscount();
             }
             $taxSubtotal = max($subtotal - $discount, 0);
             $baseTaxSubtotal = max($baseSubtotal - $baseDiscount, 0);
             $rowTax = $this->_calculator->calcTaxAmount($taxSubtotal, $rate, $inclTax, false);
             $baseRowTax = $this->_calculator->calcTaxAmount($baseTaxSubtotal, $rate, $inclTax, false);
             if ($isWeeeEnabled && $this->_weeeHelper->isTaxable()) {
                 $weeeTax = ($item->getWeeeTaxAppliedRowAmount() - $item->getWeeeDiscount()) * $rate / 100;
                 $rowTax += $weeeTax;
                 $baseWeeeTax = ($item->getBaseWeeeTaxAppliedRowAmount() - $item->getBaseWeeeDiscount()) * $rate / 100;
                 $baseRowTax += $baseWeeeTax;
                 $taxGroups[$rateKey]['weee_tax'][] = $weeeTax;
                 $taxGroups[$rateKey]['base_weee_tax'][] = $baseWeeeTax;
             }
             if (!$item->getNoDiscount() && $item->getWeeeTaxApplied()) {
                 $rowTaxBeforeDiscount = $this->_calculator->calcTaxAmount($subtotal, $rate, $inclTax, false);
                 $baseRowTaxBeforeDiscount = $this->_calculator->calcTaxAmount($baseSubtotal, $rate, $inclTax, false);
                 if ($isWeeeTaxable) {
                     $rowTaxBeforeDiscount += $item->getWeeeTaxAppliedRowAmount() * $rate / 100;
                     $baseRowTaxBeforeDiscount += $item->getBaseWeeeTaxAppliedRowAmount() * $rate / 100;
                 }
             }
             if ($inclTax && $discount > 0) {
                 $hiddenTax = $this->_calculator->calcTaxAmount($discount, $rate, $inclTax, false);
                 $baseHiddenTax = $this->_calculator->calcTaxAmount($baseDiscount, $rate, $inclTax, false);
                 $this->_hiddenTaxes[] = array('rate_key' => $rateKey, 'qty' => 1, 'item' => $item, 'value' => $hiddenTax, 'base_value' => $baseHiddenTax, 'incl_tax' => $inclTax);
             }
             break;
     }
     $rowTax = $this->_deltaRound($rowTax, $rateKey, $inclTax);
     $baseRowTax = $this->_deltaRound($baseRowTax, $rateKey, $inclTax, 'base');
     $item->setTaxAmount(max(0, $rowTax));
     $item->setBaseTaxAmount(max(0, $baseRowTax));
     if (isset($rowTaxBeforeDiscount) && isset($baseRowTaxBeforeDiscount)) {
         $taxBeforeDiscount = max(0, $this->_deltaRound($rowTaxBeforeDiscount, $rateKey, $inclTax, 'tax_before_discount'));
         $baseTaxBeforeDiscount = max(0, $this->_deltaRound($baseRowTaxBeforeDiscount, $rateKey, $inclTax, 'tax_before_discount_base'));
         $item->setDiscountTaxCompensation($taxBeforeDiscount - max(0, $rowTax));
         $item->setBaseDiscountTaxCompensation($baseTaxBeforeDiscount - max(0, $baseRowTax));
     }
     $rowTotalInclTax = $item->getRowTotalInclTax();
     if (!isset($rowTotalInclTax)) {
         $weeeTaxBeforeDiscount = 0;
         $baseWeeeTaxBeforeDiscount = 0;
         if ($isWeeeTaxable) {
             $weeeTaxBeforeDiscount = $item->getWeeeTaxAppliedRowAmount() * $rate / 100;
             $baseWeeeTaxBeforeDiscount = $item->getBaseWeeeTaxAppliedRowAmount() * $rate / 100;
         }
         if ($this->_config->priceIncludesTax($this->_store)) {
             $item->setRowTotalInclTax($subtotal + $weeeTaxBeforeDiscount);
//.........这里部分代码省略.........