1 files changed, 191 insertions, 5 deletions

diff --git a/src/qt/sendcoinsdialog.cpp b/src/qt/sendcoinsdialog.cpp
index ce94131cce..ff39829b95 100644
--- a/src/qt/sendcoinsdialog.cpp
+++ b/src/qt/sendcoinsdialog.cpp
@@ -7,10 +7,12 @@
 
 #include "addresstablemodel.h"
 #include "bitcoinunits.h"
+#include "clientmodel.h"
 #include "coincontroldialog.h"
 #include "guiutil.h"
 #include "optionsmodel.h"
 #include "sendcoinsentry.h"
+#include "wallet.h"
 #include "walletmodel.h"
 
 #include "base58.h"
@@ -19,6 +21,7 @@
 
 #include <QMessageBox>
 #include <QScrollBar>
+#include <QSettings>
 #include <QTextDocument>
 
 SendCoinsDialog::SendCoinsDialog(QWidget *parent) :
@@ -72,9 +75,46 @@ SendCoinsDialog::SendCoinsDialog(QWidget *parent) :
     ui->labelCoinControlLowOutput->addAction(clipboardLowOutputAction);
     ui->labelCoinControlChange->addAction(clipboardChangeAction);
 
+    // init transaction fee section
+    QSettings settings;
+    if (!settings.contains("fFeeSectionMinimized"))
+        settings.setValue("fFeeSectionMinimized", true);
+    if (!settings.contains("nFeeRadio") && settings.contains("nTransactionFee") && settings.value("nTransactionFee").toLongLong() > 0) // compatibility
+        settings.setValue("nFeeRadio", 1); // custom
+    if (!settings.contains("nFeeRadio"))
+        settings.setValue("nFeeRadio", 0); // recommended
+    if (!settings.contains("nCustomFeeRadio") && settings.contains("nTransactionFee") && settings.value("nTransactionFee").toLongLong() > 0) // compatibility
+        settings.setValue("nCustomFeeRadio", 1); // total at least
+    if (!settings.contains("nCustomFeeRadio"))
+        settings.setValue("nCustomFeeRadio", 0); // per kilobyte
+    if (!settings.contains("nSmartFeeSliderPosition"))
+        settings.setValue("nSmartFeeSliderPosition", 0);
+    if (!settings.contains("nTransactionFee"))
+        settings.setValue("nTransactionFee", (qint64)DEFAULT_TRANSACTION_FEE);
+    if (!settings.contains("fPayOnlyMinFee"))
+        settings.setValue("fPayOnlyMinFee", false);
+    if (!settings.contains("fSendFreeTransactions"))
+        settings.setValue("fSendFreeTransactions", false);
+    ui->groupFee->setId(ui->radioSmartFee, 0);
+    ui->groupFee->setId(ui->radioCustomFee, 1);
+    ui->groupFee->button((int)std::max(0, std::min(1, settings.value("nFeeRadio").toInt())))->setChecked(true);
+    ui->groupCustomFee->setId(ui->radioCustomPerKilobyte, 0);
+    ui->groupCustomFee->setId(ui->radioCustomAtLeast, 1);
+    ui->groupCustomFee->button((int)std::max(0, std::min(1, settings.value("nCustomFeeRadio").toInt())))->setChecked(true);
+    ui->sliderSmartFee->setValue(settings.value("nSmartFeeSliderPosition").toInt());
+    ui->customFee->setValue(settings.value("nTransactionFee").toLongLong());
+    ui->checkBoxMinimumFee->setChecked(settings.value("fPayOnlyMinFee").toBool());
+    ui->checkBoxFreeTx->setChecked(settings.value("fSendFreeTransactions").toBool());
+    minimizeFeeSection(settings.value("fFeeSectionMinimized").toBool());
+
     fNewRecipientAllowed = true;
 }
 
+void SendCoinsDialog::setClientModel(ClientModel *clientModel)
+{
+    this->clientModel = clientModel;
+}
+
 void SendCoinsDialog::setModel(WalletModel *model)
 {
     this->model = model;
@@ -94,18 +134,51 @@ void SendCoinsDialog::setModel(WalletModel *model)
                    model->getWatchBalance(), model->getWatchUnconfirmedBalance(), model->getWatchImmatureBalance());
         connect(model, SIGNAL(balanceChanged(CAmount,CAmount,CAmount,CAmount,CAmount,CAmount)), this, SLOT(setBalance(CAmount,CAmount,CAmount,CAmount,CAmount,CAmount)));
         connect(model->getOptionsModel(), SIGNAL(displayUnitChanged(int)), this, SLOT(updateDisplayUnit()));
+        updateDisplayUnit();
 
         // Coin Control
         connect(model->getOptionsModel(), SIGNAL(displayUnitChanged(int)), this, SLOT(coinControlUpdateLabels()));
         connect(model->getOptionsModel(), SIGNAL(coinControlFeaturesChanged(bool)), this, SLOT(coinControlFeatureChanged(bool)));
-        connect(model->getOptionsModel(), SIGNAL(transactionFeeChanged(CAmount)), this, SLOT(coinControlUpdateLabels()));
         ui->frameCoinControl->setVisible(model->getOptionsModel()->getCoinControlFeatures());
         coinControlUpdateLabels();
+
+        // fee section
+        connect(clientModel, SIGNAL(numBlocksChanged(int)), this, SLOT(updateSmartFeeLabel()));
+        connect(ui->sliderSmartFee, SIGNAL(valueChanged(int)), this, SLOT(updateSmartFeeLabel()));
+        connect(ui->sliderSmartFee, SIGNAL(valueChanged(int)), this, SLOT(updateGlobalFeeVariables()));
+        connect(ui->sliderSmartFee, SIGNAL(valueChanged(int)), this, SLOT(coinControlUpdateLabels()));
+        connect(ui->groupFee, SIGNAL(buttonClicked(int)), this, SLOT(updateFeeSectionControls()));
+        connect(ui->groupFee, SIGNAL(buttonClicked(int)), this, SLOT(updateGlobalFeeVariables()));
+        connect(ui->groupFee, SIGNAL(buttonClicked(int)), this, SLOT(coinControlUpdateLabels()));
+        connect(ui->groupCustomFee, SIGNAL(buttonClicked(int)), this, SLOT(updateGlobalFeeVariables()));
+        connect(ui->groupCustomFee, SIGNAL(buttonClicked(int)), this, SLOT(coinControlUpdateLabels()));
+        connect(ui->customFee, SIGNAL(valueChanged()), this, SLOT(updateGlobalFeeVariables()));
+        connect(ui->customFee, SIGNAL(valueChanged()), this, SLOT(coinControlUpdateLabels()));
+        connect(ui->checkBoxMinimumFee, SIGNAL(stateChanged(int)), this, SLOT(setMinimumFee()));
+        connect(ui->checkBoxMinimumFee, SIGNAL(stateChanged(int)), this, SLOT(updateFeeSectionControls()));
+        connect(ui->checkBoxMinimumFee, SIGNAL(stateChanged(int)), this, SLOT(updateGlobalFeeVariables()));
+        connect(ui->checkBoxMinimumFee, SIGNAL(stateChanged(int)), this, SLOT(coinControlUpdateLabels()));
+        connect(ui->checkBoxFreeTx, SIGNAL(stateChanged(int)), this, SLOT(updateGlobalFeeVariables()));
+        connect(ui->checkBoxFreeTx, SIGNAL(stateChanged(int)), this, SLOT(coinControlUpdateLabels()));
+        ui->customFee->setSingleStep(CWallet::minTxFee.GetFeePerK());
+        updateFeeSectionControls();
+        updateMinFeeLabel();
+        updateSmartFeeLabel();
+        updateGlobalFeeVariables();
     }
 }
 
 SendCoinsDialog::~SendCoinsDialog()
 {
+    QSettings settings;
+    settings.setValue("fFeeSectionMinimized", fFeeMinimized);
+    settings.setValue("nFeeRadio", ui->groupFee->checkedId());
+    settings.setValue("nCustomFeeRadio", ui->groupCustomFee->checkedId());
+    settings.setValue("nSmartFeeSliderPosition", ui->sliderSmartFee->value());
+    settings.setValue("nTransactionFee", (qint64)ui->customFee->value());
+    settings.setValue("fPayOnlyMinFee", ui->checkBoxMinimumFee->isChecked());
+    settings.setValue("fSendFreeTransactions", ui->checkBoxFreeTx->isChecked());
+
     delete ui;
 }
 
@@ -214,6 +287,9 @@ void SendCoinsDialog::on_sendButton_clicked()
         questionString.append(BitcoinUnits::formatHtmlWithUnit(model->getOptionsModel()->getDisplayUnit(), txFee));
         questionString.append("</span> ");
         questionString.append(tr("added as transaction fee"));
+
+        // append transaction size
+        questionString.append(" (" + QString::number((double)currentTransaction.getTransactionSize() / 1000) + " kB)");
     }
 
     // add total amount in all subdivision units
@@ -402,6 +478,9 @@ void SendCoinsDialog::setBalance(const CAmount& balance, const CAmount& unconfir
 void SendCoinsDialog::updateDisplayUnit()
 {
     setBalance(model->getBalance(), 0, 0, 0, 0, 0);
+    ui->customFee->setDisplayUnit(model->getOptionsModel()->getDisplayUnit());
+    updateMinFeeLabel();
+    updateSmartFeeLabel();
 }
 
 void SendCoinsDialog::processSendCoinsReturn(const WalletModel::SendCoinsReturn &sendCoinsReturn, const QString &msgArg)
@@ -438,6 +517,9 @@ void SendCoinsDialog::processSendCoinsReturn(const WalletModel::SendCoinsReturn
         msgParams.first = tr("The transaction was rejected! This might happen if some of the coins in your wallet were already spent, such as if you used a copy of wallet.dat and coins were spent in the copy but not marked as spent here.");
         msgParams.second = CClientUIInterface::MSG_ERROR;
         break;
+    case WalletModel::InsaneFee:
+        msgParams.first = tr("A fee higher than %1 is considered an insanely high fee.").arg(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), 10000000));
+        break;
     // included to prevent a compiler warning.
     case WalletModel::OK:
     default:
@@ -447,6 +529,110 @@ void SendCoinsDialog::processSendCoinsReturn(const WalletModel::SendCoinsReturn
     emit message(tr("Send Coins"), msgParams.first, msgParams.second);
 }
 
+void SendCoinsDialog::minimizeFeeSection(bool fMinimize)
+{
+    ui->labelFeeMinimized->setVisible(fMinimize);
+    ui->buttonChooseFee  ->setVisible(fMinimize);
+    ui->buttonMinimizeFee->setVisible(!fMinimize);
+    ui->frameFeeSelection->setVisible(!fMinimize);
+    ui->horizontalLayoutSmartFee->setContentsMargins(0, (fMinimize ? 0 : 6), 0, 0);
+    fFeeMinimized = fMinimize;
+}
+
+void SendCoinsDialog::on_buttonChooseFee_clicked()
+{
+    minimizeFeeSection(false);
+}
+
+void SendCoinsDialog::on_buttonMinimizeFee_clicked()
+{
+    updateFeeMinimizedLabel();
+    minimizeFeeSection(true);
+}
+
+void SendCoinsDialog::setMinimumFee()
+{
+    ui->radioCustomPerKilobyte->setChecked(true);
+    ui->customFee->setValue(CWallet::minTxFee.GetFeePerK());
+}
+
+void SendCoinsDialog::updateFeeSectionControls()
+{
+    ui->sliderSmartFee          ->setEnabled(ui->radioSmartFee->isChecked());
+    ui->labelSmartFee           ->setEnabled(ui->radioSmartFee->isChecked());
+    ui->labelSmartFee2          ->setEnabled(ui->radioSmartFee->isChecked());
+    ui->labelSmartFee3          ->setEnabled(ui->radioSmartFee->isChecked());
+    ui->labelFeeEstimation      ->setEnabled(ui->radioSmartFee->isChecked());
+    ui->labelSmartFeeNormal     ->setEnabled(ui->radioSmartFee->isChecked());
+    ui->labelSmartFeeFast       ->setEnabled(ui->radioSmartFee->isChecked());
+    ui->checkBoxMinimumFee      ->setEnabled(ui->radioCustomFee->isChecked());
+    ui->labelMinFeeWarning      ->setEnabled(ui->radioCustomFee->isChecked());
+    ui->radioCustomPerKilobyte  ->setEnabled(ui->radioCustomFee->isChecked() && !ui->checkBoxMinimumFee->isChecked());
+    ui->radioCustomAtLeast      ->setEnabled(ui->radioCustomFee->isChecked() && !ui->checkBoxMinimumFee->isChecked());
+    ui->customFee               ->setEnabled(ui->radioCustomFee->isChecked() && !ui->checkBoxMinimumFee->isChecked());
+}
+
+void SendCoinsDialog::updateGlobalFeeVariables()
+{
+    if (ui->radioSmartFee->isChecked())
+    {
+        nTxConfirmTarget = (int)25 - (int)std::max(0, std::min(24, ui->sliderSmartFee->value()));
+        payTxFee = CFeeRate(0);
+    }
+    else
+    {
+        nTxConfirmTarget = 25;
+        payTxFee = CFeeRate(ui->customFee->value());
+        fPayAtLeastCustomFee = ui->radioCustomAtLeast->isChecked();
+    }
+
+    fSendFreeTransactions = ui->checkBoxFreeTx->isChecked();
+}
+
+void SendCoinsDialog::updateFeeMinimizedLabel()
+{
+    if(!model || !model->getOptionsModel())
+        return;
+
+    if (ui->radioSmartFee->isChecked())
+        ui->labelFeeMinimized->setText(ui->labelSmartFee->text());
+    else {
+        ui->labelFeeMinimized->setText(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), ui->customFee->value()) +
+            ((ui->radioCustomPerKilobyte->isChecked()) ? "/kB" : ""));
+    }
+}
+
+void SendCoinsDialog::updateMinFeeLabel()
+{
+    if (model && model->getOptionsModel())
+        ui->checkBoxMinimumFee->setText(tr("Pay only the minimum fee of %1").arg(
+            BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), CWallet::minTxFee.GetFeePerK()) + "/kB")
+        );
+}
+
+void SendCoinsDialog::updateSmartFeeLabel()
+{
+    if(!model || !model->getOptionsModel())
+        return;
+
+    int nBlocksToConfirm = (int)25 - (int)std::max(0, std::min(24, ui->sliderSmartFee->value()));
+    CFeeRate feeRate = mempool.estimateFee(nBlocksToConfirm);
+    if (feeRate <= CFeeRate(0)) // not enough data => minfee
+    {
+        ui->labelSmartFee->setText(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), CWallet::minTxFee.GetFeePerK()) + "/kB");
+        ui->labelSmartFee2->show(); // (Smart fee not initialized yet. This usually takes a few blocks...)
+        ui->labelFeeEstimation->setText("");
+    }
+    else
+    {
+        ui->labelSmartFee->setText(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), feeRate.GetFeePerK()) + "/kB");
+        ui->labelSmartFee2->hide();
+        ui->labelFeeEstimation->setText(tr("Estimated to begin confirmation within %1 block(s).").arg(nBlocksToConfirm));
+    }
+
+    updateFeeMinimizedLabel();
+}
+
 // Coin Control: copy label "Quantity" to clipboard
 void SendCoinsDialog::coinControlClipboardQuantity()
 {
@@ -462,19 +648,19 @@ void SendCoinsDialog::coinControlClipboardAmount()
 // Coin Control: copy label "Fee" to clipboard
 void SendCoinsDialog::coinControlClipboardFee()
 {
-    GUIUtil::setClipboard(ui->labelCoinControlFee->text().left(ui->labelCoinControlFee->text().indexOf(" ")));
+    GUIUtil::setClipboard(ui->labelCoinControlFee->text().left(ui->labelCoinControlFee->text().indexOf(" ")).replace("~", ""));
 }
 
 // Coin Control: copy label "After fee" to clipboard
 void SendCoinsDialog::coinControlClipboardAfterFee()
 {
-    GUIUtil::setClipboard(ui->labelCoinControlAfterFee->text().left(ui->labelCoinControlAfterFee->text().indexOf(" ")));
+    GUIUtil::setClipboard(ui->labelCoinControlAfterFee->text().left(ui->labelCoinControlAfterFee->text().indexOf(" ")).replace("~", ""));
 }
 
 // Coin Control: copy label "Bytes" to clipboard
 void SendCoinsDialog::coinControlClipboardBytes()
 {
-    GUIUtil::setClipboard(ui->labelCoinControlBytes->text());
+    GUIUtil::setClipboard(ui->labelCoinControlBytes->text().replace("~", ""));
 }
 
 // Coin Control: copy label "Priority" to clipboard
@@ -492,7 +678,7 @@ void SendCoinsDialog::coinControlClipboardLowOutput()
 // Coin Control: copy label "Change" to clipboard
 void SendCoinsDialog::coinControlClipboardChange()
 {
-    GUIUtil::setClipboard(ui->labelCoinControlChange->text().left(ui->labelCoinControlChange->text().indexOf(" ")));
+    GUIUtil::setClipboard(ui->labelCoinControlChange->text().left(ui->labelCoinControlChange->text().indexOf(" ")).replace("~", ""));
 }
 
 // Coin Control: settings menu - coin control enabled/disabled by user