a free Monero desktop wallet
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// SPDX-License-Identifier: BSD-3-Clause
// Copyright (c) 2020-2021, The Monero Project.
#include "SendWidget.h"
#include "ui_SendWidget.h"
#include <QMessageBox>
#include "ColorScheme.h"
#include "constants.h"
#include "utils/AppData.h"
#include "Icons.h"
#ifdef WITH_SCANNER
#include "qrcode_scanner/QrCodeScanDialog.h"
#include <QtMultimedia/QCameraInfo>
#endif
SendWidget::SendWidget(QSharedPointer<AppContext> ctx, QWidget *parent)
: QWidget(parent)
, ui(new Ui::SendWidget)
, m_ctx(std::move(ctx))
{
ui->setupUi(this);
QString amount_rx = R"(^\d{0,8}[\.,]\d{0,12}|(all)$)";
QRegExp rx;
rx.setPattern(amount_rx);
QValidator *validator = new QRegExpValidator(rx, this);
ui->lineAmount->setValidator(validator);
connect(m_ctx.get(), &AppContext::initiateTransaction, this, &SendWidget::onInitiateTransaction);
connect(m_ctx.get(), &AppContext::endTransaction, this, &SendWidget::onEndTransaction);
connect(m_ctx.get(), &AppContext::openAliasResolved, this, &SendWidget::onOpenAliasResolved);
connect(m_ctx.get(), &AppContext::openAliasResolveError, this, &SendWidget::onOpenAliasResolveError);
connect(ui->btnScan, &QPushButton::clicked, this, &SendWidget::scanClicked);
connect(ui->btnSend, &QPushButton::clicked, this, &SendWidget::sendClicked);
connect(ui->btnClear, &QPushButton::clicked, this, &SendWidget::clearClicked);
connect(ui->btnMax, &QPushButton::clicked, this, &SendWidget::btnMaxClicked);
connect(ui->comboCurrencySelection, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &SendWidget::currencyComboChanged);
connect(ui->lineAmount, &QLineEdit::textChanged, this, &SendWidget::amountEdited);
connect(ui->lineAddress, &QPlainTextEdit::textChanged, this, &SendWidget::addressEdited);
connect(ui->btn_openAlias, &QPushButton::clicked, this, &SendWidget::aliasClicked);
connect(ui->lineAddress, &PayToEdit::dataPasted, this, &SendWidget::onDataPasted);
ui->label_conversionAmount->setText("");
ui->label_conversionAmount->hide();
ui->btn_openAlias->hide();
ui->label_PayTo->setHelpText("Recipient of the funds.\n\n"
"You may enter a Monero address, or an alias (email-like address that forwards to a Monero address)");
ui->label_Description->setHelpText("Description of the transaction (optional).\n\n"
"The description is not sent to the recipient of the funds. It is stored in your wallet cache, "
"and displayed in the 'History' tab.");
ui->label_Amount->setHelpText("Amount to be sent.\n\nThis is the exact amount the recipient will receive. "
"In addition to this amount a transaction fee will be subtracted from your balance. "
"You will be able to review the transaction fee before the transaction is broadcast.\n\n"
"To send all your balance, click the Max button to the right.");
ui->lineAddress->setNetType(constants::networkType);
this->setupComboBox();
}
void SendWidget::currencyComboChanged(int index) {
QString amount = ui->lineAmount->text();
if(amount.isEmpty()) return;
this->amountEdited(amount);
}
void SendWidget::addressEdited() {
QVector<PartialTxOutput> outputs = ui->lineAddress->getOutputs();
bool freezeAmounts = !outputs.empty();
ui->lineAmount->setReadOnly(freezeAmounts);
ui->lineAmount->setFrame(!freezeAmounts);
ui->btnMax->setDisabled(freezeAmounts);
ui->comboCurrencySelection->setDisabled(freezeAmounts);
if (!outputs.empty()) {
ui->lineAmount->setText(WalletManager::displayAmount(ui->lineAddress->getTotal(), false));
ui->comboCurrencySelection->setCurrentIndex(0);
}
ui->btn_openAlias->setVisible(ui->lineAddress->isOpenAlias());
}
void SendWidget::amountEdited(const QString &text) {
this->updateConversionLabel();
}
void SendWidget::fill(double amount) {
ui->lineAmount->setText(QString::number(amount));
}
void SendWidget::fill(const QString &address, const QString &description, double amount) {
ui->lineAddress->setText(address);
ui->lineAddress->moveCursor(QTextCursor::Start);
ui->lineDescription->setText(description);
if (amount > 0)
ui->lineAmount->setText(QString::number(amount));
ui->lineAmount->setFocus();
this->updateConversionLabel();
}
void SendWidget::fillAddress(const QString &address) {
ui->lineAddress->setText(address);
ui->lineAddress->moveCursor(QTextCursor::Start);
}
void SendWidget::scanClicked() {
#ifdef WITH_SCANNER
auto cameras = QCameraInfo::availableCameras();
if (cameras.count() < 1) {
QMessageBox::warning(this, "QR code scanner", "No available cameras found.");
return;
}
auto *dialog = new QrCodeScanDialog(this);
dialog->exec();
ui->lineAddress->setText(dialog->decodedString);
dialog->deleteLater();
#else
QMessageBox::warning(this, "QR scanner", "Feather was built without webcam QR scanner support.");
#endif
}
void SendWidget::sendClicked() {
if (!m_ctx->wallet->isConnected()) {
QMessageBox::warning(this, "Error", "Unable to create transaction:\n\n"
"Wallet is not connected to a node.\n"
"Go to File -> Settings -> Node to manually connect to a node.");
return;
}
QString currency = ui->comboCurrencySelection->currentText();
QString recipient = ui->lineAddress->text().simplified().remove(' ');
QString description = ui->lineDescription->text();
if(recipient.isEmpty()) {
QMessageBox::warning(this, "Malformed recipient", "The recipient address was not correct");
return;
}
QVector<PartialTxOutput> outputs = ui->lineAddress->getOutputs();
QVector<PayToLineError> errors = ui->lineAddress->getErrors();
if (errors.size() > 0 && ui->lineAddress->isMultiline()) {
QString errorText;
for (auto &error: errors) {
errorText += QString("Line #%1:\n%2\n").arg(QString::number(error.idx + 1), error.error);
}
QMessageBox::warning(this, "Warning", QString("Invalid lines found:\n\n%1").arg(errorText));
return;
}
if (outputs.size() > 0) { // multi destination transaction
if (outputs.size() > 16) {
QMessageBox::warning(this, "Warning", "Maximum number of outputs (16) exceeded.");
return;
}
QVector<QString> addresses;
QVector<quint64> amounts;
for (auto &output : outputs) {
addresses.push_back(output.address);
amounts.push_back(output.amount);
}
m_ctx->onCreateTransactionMultiDest(addresses, amounts, description);
return;
}
quint64 amount;
if (currency == "XMR") {
amount = this->amount();
bool sendAll = (ui->lineAmount->text() == "all");
if (amount == 0 && !sendAll) {
QMessageBox::warning(this, "Amount error", "Invalid amount specified.");
return;
}
m_ctx->onCreateTransaction(recipient, amount, description, sendAll);
} else {
amount = WalletManager::amountFromDouble(this->conversionAmount());
if (amount == 0) {
QMessageBox::warning(this, "Fiat conversion error", "Could not create transaction.");
return;
}
m_ctx->onCreateTransaction(recipient, amount, description, false);
}
}
void SendWidget::aliasClicked() {
auto address = ui->lineAddress->text();
m_ctx->onOpenAliasResolve(address);
}
void SendWidget::clearClicked() {
ui->lineAddress->clear();
ui->lineAmount->clear();
ui->lineDescription->clear();
}
void SendWidget::btnMaxClicked() {
ui->lineAmount->setText("all");
this->updateConversionLabel();
}
void SendWidget::updateConversionLabel() {
auto amount = this->amountDouble();
ui->label_conversionAmount->setText("");
if (amount <= 0) {
ui->label_conversionAmount->hide();
return;
}
QString conversionAmountStr = [this]{
QString currency = ui->comboCurrencySelection->currentText();
if (currency != "XMR") {
return QString("~%1 XMR").arg(QString::number(this->conversionAmount(), 'f'));
} else {
auto preferredFiatCurrency = config()->get(Config::preferredFiatCurrency).toString();
double conversionAmount = appData()->prices.convert("XMR", preferredFiatCurrency, this->amountDouble());
return QString("~%1 %2").arg(QString::number(conversionAmount, 'f', 2), preferredFiatCurrency);
}
}();
ui->label_conversionAmount->setText(conversionAmountStr);
ui->label_conversionAmount->show();
}
double SendWidget::conversionAmount() {
QString currency = ui->comboCurrencySelection->currentText();
return appData()->prices.convert(currency, "XMR", this->amountDouble());
}
quint64 SendWidget::amount() {
// grab amount from "amount" text box
QString amount = ui->lineAmount->text();
if (amount == "all") return 0;
amount.replace(',', '.');
if (amount.isEmpty()) return 0;
return WalletManager::amountFromString(amount);
}
double SendWidget::amountDouble() {
quint64 amount = this->amount();
return amount / constants::cdiv;
}
void SendWidget::onOpenAliasResolved(const QString &address, const QString &openAlias) {
this->fill(address, openAlias);
ui->btn_openAlias->hide();
}
void SendWidget::onOpenAliasResolveError(const QString &msg) {
QMessageBox::warning(this, "OpenAlias error", msg);
}
void SendWidget::clearFields() {
ui->lineAddress->clear();
ui->lineAmount->clear();
ui->lineDescription->clear();
ui->label_conversionAmount->clear();
}
void SendWidget::payToMany() {
ui->lineAddress->payToMany();
}
void SendWidget::onInitiateTransaction() {
ui->btnSend->setEnabled(false);
}
void SendWidget::onEndTransaction() {
ui->btnSend->setEnabled(true);
}
void SendWidget::onDataPasted(const QString &data) {
if (!data.isEmpty()) {
QVariantMap uriData = m_ctx->wallet->parse_uri_to_object(data);
if (!uriData.contains("error")) {
ui->lineAddress->setText(uriData.value("address").toString());
ui->lineDescription->setText(uriData.value("tx_description").toString());
ui->lineAmount->setText(uriData.value("amount").toString());
} else {
ui->lineAddress->setText(data);
}
}
else {
QMessageBox::warning(this, "Error", "No Qr Code found.");
}
}
void SendWidget::setupComboBox() {
ui->comboCurrencySelection->clear();
QStringList defaultCurrencies = {"XMR", "USD", "EUR", "CNY", "JPY", "GBP"};
QString preferredCurrency = config()->get(Config::preferredFiatCurrency).toString();
if (defaultCurrencies.contains(preferredCurrency)) {
defaultCurrencies.removeOne(preferredCurrency);
}
ui->comboCurrencySelection->insertItems(0, defaultCurrencies);
ui->comboCurrencySelection->insertItem(1, preferredCurrency);
}
void SendWidget::onPreferredFiatCurrencyChanged() {
this->updateConversionLabel();
this->setupComboBox();
}
void SendWidget::skinChanged() {
if (ColorScheme::hasDarkBackground(this)) {
ui->btnScan->setIcon(icons()->icon("camera_white.png"));
} else {
ui->btnScan->setIcon(icons()->icon("camera_dark.png"));
}
}
SendWidget::~SendWidget() = default;