+void MainWindow::on_run_stop_clicked()
+{
+ GlobalSettings settings;
+ bool all_sessions = settings.value(GlobalSettings::Key_General_StartAllSessions).toBool();
+
+ if (all_sessions)
+ {
+ vector< shared_ptr<Session> > hw_sessions;
+
+ // Make a list of all sessions where a hardware device is used
+ for (shared_ptr<Session> s : sessions_) {
+ shared_ptr<devices::HardwareDevice> hw_device =
+ dynamic_pointer_cast< devices::HardwareDevice >(s->device());
+ if (!hw_device)
+ continue;
+ hw_sessions.push_back(s);
+ }
+
+ // Stop all acquisitions if there are any running ones, start all otherwise
+ bool any_running = any_of(hw_sessions.begin(), hw_sessions.end(),
+ [](const shared_ptr<Session> &s)
+ { return (s->get_capture_state() == Session::AwaitingTrigger) ||
+ (s->get_capture_state() == Session::Running); });
+
+ for (shared_ptr<Session> s : hw_sessions)
+ if (any_running)
+ s->stop_capture();
+ else
+ s->start_capture([&](QString message) {
+ show_session_error("Capture failed", message); });
+ } else {
+
+ shared_ptr<Session> session = last_focused_session_;
+
+ if (!session)
+ return;
+
+ switch (session->get_capture_state()) {
+ case Session::Stopped:
+ session->start_capture([&](QString message) {
+ show_session_error("Capture failed", message); });
+ break;
+ case Session::AwaitingTrigger:
+ case Session::Running:
+ session->stop_capture();
+ break;
+ }
+ }
+}
+