Пример #1
0
 /// <summary>
 /// Sets the ActiveMeasurement at the start of a measurement and casts BeginMeasurement events coming from a different thread to the UI thread when necessary.
 /// </summary>
 /// <param name="sender">The sender.</param>
 /// <param name="newMeasurement">The new measurement.</param>
 /// <exception cref="System.NullReferenceException">Platform not set.</exception>
 private void _comm_BeginMeasurement(object sender, ActiveMeasurement newMeasurement)
 {
     if (_platform == null)
     {
         throw new NullReferenceException("Platform not set.");
     }
     if (_platform.InvokeIfRequired(new CommManager.BeginMeasurementEventHandler(_comm_BeginMeasurement), sender, newMeasurement)) //Recast event to UI thread when necessary
     {
         return;
     }
     MeasurementStarted?.Invoke(this, EventArgs.Empty);
 }
Пример #2
0
        /// <summary>
        /// Starts measurement process.
        /// Sets values of fields and properties
        /// responsible for the correct flow of the measurement process.
        /// Invokes "MeasurementStarted" event.
        /// Sets timer to let the application know
        /// when the measurement process should be stopped automatically.
        /// Executes the StartHeartRateMonitor method of the HeartRateMonitorModel object.
        /// </summary>
        private void StartMeasurement()
        {
            IsFinished                = false;
            IsMeasuring               = true;
            MeasurementCountdown      = MEASUREMENT_TIME;
            measurementStartTimestamp = DateTime.Now;
            measurementValues         = new List <int>();
            MeasurementStarted?.Invoke(this, new EventArgs());

            Device.StartTimer(TimeSpan.FromSeconds(MEASUREMENT_TIME), () =>
            {
                if (IsMeasuring && measurementLock == 0)
                {
                    StopMeasurement();
                    ((Command)ShowSettingsCommand).ChangeCanExecute();
                }

                if (measurementLock > 0)
                {
                    measurementLock -= 1;
                }

                return(false);
            });

            Device.StartTimer(TimeSpan.FromSeconds(1), () =>
            {
                if (!IsMeasuring)
                {
                    return(false);
                }

                TimeSpan measurementElapsedTime = DateTime.Now - measurementStartTimestamp;
                MeasurementCountdown            = MEASUREMENT_TIME - measurementElapsedTime.Seconds;
                return(true);
            });

            heartRateMonitorModel.StartHeartRateMonitor();
        }
 /// <summary>
 /// 测量开始事件
 /// </summary>
 protected void OnMeasurementStarted()
 {
     CanMeasure = false;
     MeasurementStarted?.Invoke(this, new EventArgs());
 }