[GUI] Add GUI controls for subtract-fee-from-amount

src/qt/pivx/sendconfirmdialog.cpp

@@ -188,23 +188,15 @@ void TxDetailDialog::setData(WalletModel *_model, WalletModelTransaction* _tx)
     CTransactionRef walletTx = tx->getTransaction();
     setInputsType(walletTx);
 
-    bool fSubtractFee = false;
-    const QList<SendCoinsRecipient>& recipients = tx->getRecipients();
-    for (const SendCoinsRecipient& rec : recipients) {
-        if (rec.fSubtractFee) {
-            fSubtractFee = true;
-            break;
-        }
-    }
-
     CAmount totalAmount = tx->getTotalTransactionAmount();
-    if (!fSubtractFee) totalAmount += txFee;
+    if (tx->subtractFeeFromRecipents() == 0) totalAmount += txFee;
 
     ui->textAmount->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, totalAmount, false, BitcoinUnits::separatorAlways) + " (Fee included)");
 
+    const QList<SendCoinsRecipient>& recipients = tx->getRecipients();
     int nRecipients = recipients.size();
     if (nRecipients == 1) {
-        const SendCoinsRecipient& recipient = tx->getRecipients().at(0);
+        const SendCoinsRecipient& recipient = recipients.at(0);
         if (recipient.isP2CS) {
             ui->labelSend->setText(tr("Delegating to"));
         }
@@ -337,11 +329,14 @@ void TxDetailDialog::onOutputsClicked()
             // If the there is a model tx, then this is a confirmation dialog
             if (tx) {
                 const QList<SendCoinsRecipient>& recipients = tx->getRecipients();
+                unsigned int sffa = tx->subtractFeeFromRecipents();
+                CAmount rcp_fee = (sffa > 0) ? (tx->getTransactionFee() / sffa) : 0;
                 for (int i = 0; i < recipients.size(); ++i) {
                     const auto& recipient = recipients[i];
+                    CAmount rcp_amt = recipient.amount - (recipient.fSubtractFee ? rcp_fee : 0);
                     int charsSize = recipient.isShieldedAddr ? 18 : 16;
                     QString labelRes = recipient.address.left(charsSize) + "..." + recipient.address.right(charsSize);
-                    appendOutput(layoutGrid, i, labelRes, recipient.amount, nDisplayUnit);
+                    appendOutput(layoutGrid, i, labelRes, rcp_amt, nDisplayUnit);
                 }
             } else {
                 // Tx detail dialog

src/qt/walletmodeltransaction.cpp

@@ -43,6 +43,15 @@ void WalletModelTransaction::setTransactionFee(const CAmount& newFee)
     fee = newFee;
 }
 
+unsigned int WalletModelTransaction::subtractFeeFromRecipents() const
+{
+    unsigned int count = 0;
+    for (const SendCoinsRecipient& rcp : recipients) {
+        if (rcp.fSubtractFee) count++;
+    }
+    return count;
+}
+
 CAmount WalletModelTransaction::getTotalTransactionAmount()
 {
     CAmount totalTransactionAmount = 0;

src/qt/walletmodeltransaction.h

@@ -39,6 +39,9 @@ class WalletModelTransaction
 
     CTransactionRef& getTransaction();
 
+    // return the number of recipients with subtract-fee-from-amount
+    unsigned int subtractFeeFromRecipents() const;
+
     // Whether should create a +v2 tx or go simple and create a v1.
     bool useV2{false};
     bool fIsStakeDelegationVoided{false};