// // MessageAggregator - an example application that utilizes the WSJT-X // messaging facility // // This application is only provided as a simple GUI application // example to demonstrate the WSJT-X messaging facility. It allows the // user to set the server details either as a unicast UDP server or, // if a multicast group address is provided, as a multicast server. // The benefit of the multicast server is that multiple servers can be // active at once each receiving all WSJT-X broadcast messages and // each able to respond to individual WSJT_X clients. To utilize the // multicast group features each WSJT-X client must set the same // multicast group address as the UDP server address for example // 239.255.0.0 for a site local multicast group. // // The UI is a small panel to input the service port number and // optionally the multicast group address. Below that a table // representing the log entries where any QSO logged messages // broadcast from WSJT-X clients are displayed. The bottom of the // application main window is a dock area where a dock window will // appear for each WSJT-X client, this window contains a table of the // current decode messages broadcast from that WSJT-X client and a // status line showing the status update messages broadcast from the // WSJT_X client. The dock windows may be arranged in a tab bar, side // by side, below each other or, completely detached from the dock // area as floating windows. Double clicking the dock window title bar // or dragging and dropping with the mouse allows these different // arrangements. // // The application also provides a simple menu bar including a view // menu that allows each dock window to be hidden or revealed. // #include #include #include #include #include #include #include #include #include #include #include #include "MessageServer.hpp" #include "NetworkMessage.hpp" #include "qt_helpers.hpp" using port_type = MessageServer::port_type; using Frequency = MessageServer::Frequency; QRegExp message_alphabet {"[- A-Za-z0-9+./?]*"}; // // Decodes Model - simple data model for all decodes // // The model is a basic table with uniform row format. Rows consist of // QStandardItem instances containing the string representation of the // column data and if the underlying field is not a string then the // UserRole+1 role contains the underlying data item. // // Three slots are provided to add a new decode, remove all decodes // for a client and, to build a reply to CQ message for a given row // which is emitted as a signal respectively. // class DecodesModel : public QStandardItemModel { Q_OBJECT; public: DecodesModel (QObject * parent = nullptr) : QStandardItemModel {0, 7, parent} , text_font_ {"Courier", 10} { setHeaderData (0, Qt::Horizontal, tr ("Client")); setHeaderData (1, Qt::Horizontal, tr ("Time")); setHeaderData (2, Qt::Horizontal, tr ("Snr")); setHeaderData (3, Qt::Horizontal, tr ("DT")); setHeaderData (4, Qt::Horizontal, tr ("DF")); setHeaderData (5, Qt::Horizontal, tr ("Md")); setHeaderData (6, Qt::Horizontal, tr ("Message")); } Q_SLOT void add_decode (bool is_new, QString const& client_id, QTime time, qint32 snr, float delta_time , quint32 delta_frequency, QString const& mode, QString const& message) { if (!is_new) { int target_row {-1}; for (auto row = 0; row < rowCount (); ++row) { if (data (index (row, 0)).toString () == client_id) { auto row_time = item (row, 1)->data ().toTime (); if (row_time == time && item (row, 2)->data ().toInt () == snr && item (row, 3)->data ().toFloat () == delta_time && item (row, 4)->data ().toUInt () == delta_frequency && data (index (row, 5)).toString () == mode && data (index (row, 6)).toString () == message) { return; } if (time <= row_time) { target_row = row; // last row with same time } } } if (target_row >= 0) { insertRow (target_row + 1, make_row (client_id, time, snr, delta_time, delta_frequency, mode, message)); return; } } appendRow (make_row (client_id, time, snr, delta_time, delta_frequency, mode, message)); } QList make_row (QString const& client_id, QTime time, qint32 snr, float delta_time , quint32 delta_frequency, QString const& mode, QString const& message) const { auto time_item = new QStandardItem {time.toString ("hh:mm")}; time_item->setData (time); time_item->setTextAlignment (Qt::AlignRight); auto snr_item = new QStandardItem {QString::number (snr)}; snr_item->setData (snr); snr_item->setTextAlignment (Qt::AlignRight); auto dt = new QStandardItem {QString::number (delta_time)}; dt->setData (delta_time); dt->setTextAlignment (Qt::AlignRight); auto df = new QStandardItem {QString::number (delta_frequency)}; df->setData (delta_frequency); df->setTextAlignment (Qt::AlignRight); auto md = new QStandardItem {mode}; md->setTextAlignment (Qt::AlignHCenter); QList row { new QStandardItem {client_id}, time_item, snr_item, dt, df, md, new QStandardItem {message}}; Q_FOREACH (auto& item, row) { item->setEditable (false); item->setFont (text_font_); item->setTextAlignment (item->textAlignment () | Qt::AlignVCenter); } return row; } Q_SLOT void clear_decodes (QString const& client_id) { for (auto row = rowCount () - 1; row >= 0; --row) { if (data (index (row, 0)).toString () == client_id) { removeRow (row); } } } Q_SLOT void do_reply (QModelIndex const& source) { auto row = source.row (); Q_EMIT reply (data (index (row, 0)).toString () , item (row, 1)->data ().toTime () , item (row, 2)->data ().toInt () , item (row, 3)->data ().toFloat () , item (row, 4)->data ().toInt () , data (index (row, 5)).toString () , data (index (row, 6)).toString ()); } Q_SIGNAL void reply (QString const& id, QTime time, qint32 snr, float delta_time, quint32 delta_frequency , QString const& mode, QString const& message); private: QFont text_font_; }; class ClientWidget : public QDockWidget { Q_OBJECT; public: explicit ClientWidget (QAbstractItemModel * decodes_model, QString const& id, QWidget * parent = 0) : QDockWidget {id, parent} , id_ {id} , decodes_table_view_ {new QTableView} , message_line_edit_ {new QLineEdit} , auto_off_button_ {new QPushButton {tr ("&Auto Off")}} , halt_tx_button_ {new QPushButton {tr ("&Halt Tx")}} , mode_label_ {new QLabel} , dx_call_label_ {new QLabel} , frequency_label_ {new QLabel} , report_label_ {new QLabel} { auto content_layout = new QVBoxLayout; content_layout->setContentsMargins (QMargins {2, 2, 2, 2}); // set up table auto proxy_model = new DecodesFilterModel {id, this}; proxy_model->setSourceModel (decodes_model); decodes_table_view_->setModel (proxy_model); decodes_table_view_->verticalHeader ()->hide (); decodes_table_view_->hideColumn (0); content_layout->addWidget (decodes_table_view_); // set up controls auto control_layout = new QHBoxLayout; auto form_layout = new QFormLayout; form_layout->addRow (tr ("Free text:"), message_line_edit_); message_line_edit_->setValidator (new QRegExpValidator {message_alphabet, this}); connect (message_line_edit_, &QLineEdit::textEdited, [this] (QString const& text) { Q_EMIT do_free_text (id_, text, false); }); connect (message_line_edit_, &QLineEdit::editingFinished, [this] () { Q_EMIT do_free_text (id_, message_line_edit_->text (), !message_line_edit_->text ().isEmpty ()); }); control_layout->addLayout (form_layout); control_layout->addWidget (auto_off_button_); control_layout->addWidget (halt_tx_button_); connect (auto_off_button_, &QAbstractButton::clicked, [this] (bool /* checked */) { Q_EMIT do_halt_tx (id_, true); }); connect (halt_tx_button_, &QAbstractButton::clicked, [this] (bool /* checked */) { Q_EMIT do_halt_tx (id_, false); }); content_layout->addLayout (control_layout); // set up status area auto status_bar = new QStatusBar; status_bar->addPermanentWidget (mode_label_); status_bar->addPermanentWidget (dx_call_label_); status_bar->addPermanentWidget (frequency_label_); status_bar->addPermanentWidget (report_label_); content_layout->addWidget (status_bar); connect (this, &ClientWidget::topLevelChanged, status_bar, &QStatusBar::setSizeGripEnabled); // set up central widget auto content_widget = new QFrame; content_widget->setFrameStyle (QFrame::StyledPanel | QFrame::Sunken); content_widget->setLayout (content_layout); setWidget (content_widget); // setMinimumSize (QSize {550, 0}); setFeatures (DockWidgetMovable | DockWidgetFloatable); setAllowedAreas (Qt::BottomDockWidgetArea); // connect up table view signals connect (decodes_table_view_, &QTableView::doubleClicked, this, [this, proxy_model] (QModelIndex const& index) { Q_EMIT do_reply (proxy_model->mapToSource (index)); }); } Q_SLOT void update_status (QString const& id, Frequency f, QString const& mode, QString const& dx_call , QString const& report, QString const& tx_mode, bool tx_enabled, bool transmitting) { if (id == id_) { mode_label_->setText (QString {"Mode: %1%2"}.arg (mode).arg (tx_mode.isEmpty () ? tx_mode : '(' + tx_mode + ')')); dx_call_label_->setText ("DX CALL: " + dx_call); frequency_label_->setText ("QRG: " + Radio::pretty_frequency_MHz_string (f)); report_label_->setText ("SNR: " + report); update_dynamic_property (frequency_label_, "transmitting", transmitting); auto_off_button_->setEnabled (tx_enabled); halt_tx_button_->setEnabled (transmitting); } } Q_SLOT void decode_added (bool /*is_new*/, QString const& client_id, QTime /*time*/, qint32 /*snr*/ , float /*delta_time*/, quint32 /*delta_frequency*/, QString const& /*mode*/ , QString const& /*message*/) { if (client_id == id_) { decodes_table_view_->resizeColumnsToContents (); decodes_table_view_->horizontalHeader ()->setStretchLastSection (true); decodes_table_view_->scrollToBottom (); } } Q_SIGNAL void do_reply (QModelIndex const&); Q_SIGNAL void do_halt_tx (QString const& id, bool auto_only); Q_SIGNAL void do_free_text (QString const& id, QString const& text, bool); private: class DecodesFilterModel final : public QSortFilterProxyModel { public: DecodesFilterModel (QString const& id, QObject * parent = nullptr) : QSortFilterProxyModel {parent} , id_ {id} {} protected: bool filterAcceptsRow (int source_row, QModelIndex const& source_parent) const override { auto source_index_col0 = sourceModel ()->index (source_row, 0, source_parent); return sourceModel ()->data (source_index_col0).toString () == id_; } private: QString id_; }; QString id_; QTableView * decodes_table_view_; QLineEdit * message_line_edit_; QAbstractButton * auto_off_button_; QAbstractButton * halt_tx_button_; QLabel * mode_label_; QLabel * dx_call_label_; QLabel * frequency_label_; QLabel * report_label_; }; class MainWindow : public QMainWindow { Q_OBJECT; public: MainWindow () : log_ {new QStandardItemModel {0, 10, this}} , decodes_model_ {new DecodesModel {this}} , server_ {new MessageServer {this}} , multicast_group_line_edit_ {new QLineEdit} , log_table_view_ {new QTableView} { // logbook log_->setHeaderData (0, Qt::Horizontal, tr ("Date/Time")); log_->setHeaderData (1, Qt::Horizontal, tr ("Callsign")); log_->setHeaderData (2, Qt::Horizontal, tr ("Grid")); log_->setHeaderData (3, Qt::Horizontal, tr ("Name")); log_->setHeaderData (4, Qt::Horizontal, tr ("Frequency")); log_->setHeaderData (5, Qt::Horizontal, tr ("Mode")); log_->setHeaderData (6, Qt::Horizontal, tr ("Sent")); log_->setHeaderData (7, Qt::Horizontal, tr ("Rec'd")); log_->setHeaderData (8, Qt::Horizontal, tr ("Power")); log_->setHeaderData (9, Qt::Horizontal, tr ("Comments")); connect (server_, &MessageServer::qso_logged, this, &MainWindow::log_qso); // menu bar auto file_menu = menuBar ()->addMenu (tr ("&File")); auto exit_action = new QAction {tr ("E&xit"), this}; exit_action->setShortcuts (QKeySequence::Quit); exit_action->setToolTip (tr ("Exit the application")); file_menu->addAction (exit_action); connect (exit_action, &QAction::triggered, this, &MainWindow::close); view_menu_ = menuBar ()->addMenu (tr ("&View")); // central layout auto central_layout = new QVBoxLayout; // server details auto port_spin_box = new QSpinBox; port_spin_box->setMinimum (1); port_spin_box->setMaximum (std::numeric_limits::max ()); auto group_box_layout = new QFormLayout; group_box_layout->addRow (tr ("Port number:"), port_spin_box); group_box_layout->addRow (tr ("Multicast Group (blank for unicast server):"), multicast_group_line_edit_); auto group_box = new QGroupBox {tr ("Server Details")}; group_box->setLayout (group_box_layout); central_layout->addWidget (group_box); log_table_view_->setModel (log_); log_table_view_->verticalHeader ()->hide (); central_layout->addWidget (log_table_view_); // central widget auto central_widget = new QWidget; central_widget->setLayout (central_layout); // main window setup setCentralWidget (central_widget); setDockOptions (AnimatedDocks | AllowNestedDocks | AllowTabbedDocks); setTabPosition (Qt::BottomDockWidgetArea, QTabWidget::North); // connect up server connect (server_, &MessageServer::error, [this] (QString const& message) { QMessageBox::warning (this, tr ("Network Error"), message); }); connect (server_, &MessageServer::client_opened, this, &MainWindow::add_client); connect (server_, &MessageServer::client_closed, this, &MainWindow::remove_client); connect (server_, &MessageServer::client_closed, decodes_model_, &DecodesModel::clear_decodes); connect (server_, &MessageServer::decode, decodes_model_, &DecodesModel::add_decode); connect (server_, &MessageServer::clear_decodes, decodes_model_, &DecodesModel::clear_decodes); connect (decodes_model_, &DecodesModel::reply, server_, &MessageServer::reply); // UI behaviour connect (port_spin_box, static_cast (&QSpinBox::valueChanged) , [this] (port_type port) {server_->start (port);}); connect (multicast_group_line_edit_, &QLineEdit::editingFinished, [this, port_spin_box] () { server_->start (port_spin_box->value (), QHostAddress {multicast_group_line_edit_->text ()}); }); port_spin_box->setValue (2237); // start up in unicast mode show (); } Q_SLOT void log_qso (QString const& /*id*/, QDateTime time, QString const& dx_call, QString const& dx_grid , Frequency dial_frequency, QString const& mode, QString const& report_sent , QString const& report_received, QString const& tx_power, QString const& comments , QString const& name) { QList row; row << new QStandardItem {time.toString ("dd-MMM-yyyy hh:mm")} << new QStandardItem {dx_call} << new QStandardItem {dx_grid} << new QStandardItem {name} << new QStandardItem {Radio::frequency_MHz_string (dial_frequency)} << new QStandardItem {mode} << new QStandardItem {report_sent} << new QStandardItem {report_received} << new QStandardItem {tx_power} << new QStandardItem {comments}; log_->appendRow (row); log_table_view_->resizeColumnsToContents (); log_table_view_->horizontalHeader ()->setStretchLastSection (true); log_table_view_->scrollToBottom (); } private: void add_client (QString const& id) { auto dock = new ClientWidget {decodes_model_, id, this}; dock->setAttribute (Qt::WA_DeleteOnClose); auto view_action = dock->toggleViewAction (); view_action->setEnabled (true); view_menu_->addAction (view_action); addDockWidget (Qt::BottomDockWidgetArea, dock); connect (server_, &MessageServer::status_update, dock, &ClientWidget::update_status); connect (server_, &MessageServer::decode, dock, &ClientWidget::decode_added); connect (dock, &ClientWidget::do_reply, decodes_model_, &DecodesModel::do_reply); connect (dock, &ClientWidget::do_halt_tx, server_, &MessageServer::halt_tx); connect (dock, &ClientWidget::do_free_text, server_, &MessageServer::free_text); connect (view_action, &QAction::toggled, dock, &ClientWidget::setVisible); dock_widgets_[id] = dock; server_->replay (id); } void remove_client (QString const& id) { auto iter = dock_widgets_.find (id); if (iter != std::end (dock_widgets_)) { (*iter)->close (); dock_widgets_.erase (iter); } } QStandardItemModel * log_; QMenu * view_menu_; DecodesModel * decodes_model_; MessageServer * server_; QLineEdit * multicast_group_line_edit_; QTableView * log_table_view_; // maps client id to widgets QHash dock_widgets_; }; #include "MessageAggregator.moc" int main (int argc, char * argv[]) { QApplication app {argc, argv}; try { QObject::connect (&app, SIGNAL (lastWindowClosed ()), &app, SLOT (quit ())); app.setApplicationName ("WSJT-X Reference UDP Message Aggregator Server"); app.setApplicationVersion ("1.0"); { QFile file {":/qss/default.qss"}; if (!file.open (QFile::ReadOnly)) { throw_qstring ("failed to open \"" + file.fileName () + "\": " + file.errorString ()); } app.setStyleSheet (file.readAll()); } MainWindow window; return app.exec (); } catch (std::exception const & e) { QMessageBox::critical (nullptr, app.applicationName (), e.what ()); std:: cerr << "Error: " << e.what () << '\n'; } catch (...) { QMessageBox::critical (nullptr, app.applicationName (), QObject::tr ("Unexpected error")); std:: cerr << "Unexpected error\n"; } return -1; }