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Diffstat (limited to 'src/qt/coincontroldialog.cpp')
-rw-r--r--src/qt/coincontroldialog.cpp23
1 files changed, 18 insertions, 5 deletions
diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
index 6d7ef70a70..e4e9015c85 100644
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -33,6 +33,7 @@
using namespace std;
QList<CAmount> CoinControlDialog::payAmounts;
CCoinControl* CoinControlDialog::coinControl = new CCoinControl();
+bool CoinControlDialog::fSubtractFeeFromAmount = false;
CoinControlDialog::CoinControlDialog(QWidget *parent) :
QDialog(parent),
@@ -541,6 +542,11 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
dPriority = dPriorityInputs / (nBytes - nBytesInputs + (nQuantityUncompressed * 29)); // 29 = 180 - 151 (uncompressed public keys are over the limit. max 151 bytes of the input are ignored for priority)
sPriorityLabel = CoinControlDialog::getPriorityLabel(dPriority, mempoolEstimatePriority);
+ // in the subtract fee from amount case, we can tell if zero change already and subtract the bytes, so that fee calculation afterwards is accurate
+ if (CoinControlDialog::fSubtractFeeFromAmount)
+ if (nAmount - nPayAmount == 0)
+ nBytes -= 34;
+
// Fee
nPayFee = CWallet::GetMinimumFee(nBytes, nTxConfirmTarget, mempool);
@@ -556,7 +562,9 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
if (nPayAmount > 0)
{
- nChange = nAmount - nPayFee - nPayAmount;
+ nChange = nAmount - nPayAmount;
+ if (!CoinControlDialog::fSubtractFeeFromAmount)
+ nChange -= nPayFee;
// Never create dust outputs; if we would, just add the dust to the fee.
if (nChange > 0 && nChange < CENT)
@@ -564,12 +572,17 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
CTxOut txout(nChange, (CScript)vector<unsigned char>(24, 0));
if (txout.IsDust(::minRelayTxFee))
{
- nPayFee += nChange;
- nChange = 0;
+ if (CoinControlDialog::fSubtractFeeFromAmount) // dust-change will be raised until no dust
+ nChange = txout.GetDustThreshold(::minRelayTxFee);
+ else
+ {
+ nPayFee += nChange;
+ nChange = 0;
+ }
}
}
- if (nChange == 0)
+ if (nChange == 0 && !CoinControlDialog::fSubtractFeeFromAmount)
nBytes -= 34;
}
@@ -612,7 +625,7 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
{
l3->setText(ASYMP_UTF8 + l3->text());
l4->setText(ASYMP_UTF8 + l4->text());
- if (nChange > 0)
+ if (nChange > 0 && !CoinControlDialog::fSubtractFeeFromAmount)
l8->setText(ASYMP_UTF8 + l8->text());
}