// TestGPSReader.cs
//
// Copyright (C) 2003 JW Hedgehog, Inc.  All rights reserved
//
// JW Hedgehog, Inc
// http://www.jwhh.com
// 
// Direct questions to mailto:jimw@jwhh.com
// 
// This code, comments and information are provided "AS IS" with
// no warrenty of any kind, either expressed or implied, including
// but not limited to the implied warranties of merchentability and/or
// fitness for a particular purpose
// ---------------------------------------------------------------------

using System;
using System.Drawing;
using System.Collections;
using System.Windows.Forms;
using System.Data;
using GPSExample.Util ;

namespace TestGPSReader
{
	/// <summary>
	/// GPSReader test program.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button btnStartGPS;
		private System.Windows.Forms.Button btnStopGPS;
		private System.Windows.Forms.ListBox lbMessageDisplay;
		internal System.Windows.Forms.Label Label1;
		internal System.Windows.Forms.Label lblBearing;
		internal System.Windows.Forms.Label Label7;
		internal System.Windows.Forms.Label lblQuality;
		internal System.Windows.Forms.Label Label6;
		internal System.Windows.Forms.Label lblFixType;
		internal System.Windows.Forms.Label Label4;
		internal System.Windows.Forms.Label lblLonDirection;
		internal System.Windows.Forms.Label lblLatDirection;
		internal System.Windows.Forms.Label lblNumSats;
		internal System.Windows.Forms.Label Label2;
		internal System.Windows.Forms.Label lblLon;
		internal System.Windows.Forms.Label Label5;
		internal System.Windows.Forms.Label lblLat;
		internal System.Windows.Forms.Label Label3;
		internal System.Windows.Forms.Label lblTime;
		internal System.Windows.Forms.Label lblMessageType;
		private System.Windows.Forms.MainMenu mainMenu1;

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			// Construct the reader
			// The two-parameter constructor uses default port settings.  It is equivalent to the following
			//     _gpsReader = new GPSReader("COM4:", 19200, ParitySetting.NoParity, 8, StopBitsSetting.OneStopBit)
			_gpsReader = new GPSReader("COM4:", 19200) ;

			// Attach to GPSReader Events
			_gpsReader.OnGPSMessage += new GPSEventHandler(_gpsReader_OnGPSMessage);
			_gpsReader.OnGPSReadStart += new EventHandler(_gpsReader_OnGPSReadStart);
			_gpsReader.OnGPSReadStop +=new EventHandler(_gpsReader_OnGPSReadStop);
		}
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			base.Dispose( disposing );
		}
		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.btnStartGPS = new System.Windows.Forms.Button();
			this.btnStopGPS = new System.Windows.Forms.Button();
			this.lbMessageDisplay = new System.Windows.Forms.ListBox();
			this.Label1 = new System.Windows.Forms.Label();
			this.lblBearing = new System.Windows.Forms.Label();
			this.Label7 = new System.Windows.Forms.Label();
			this.lblQuality = new System.Windows.Forms.Label();
			this.Label6 = new System.Windows.Forms.Label();
			this.lblFixType = new System.Windows.Forms.Label();
			this.Label4 = new System.Windows.Forms.Label();
			this.lblLonDirection = new System.Windows.Forms.Label();
			this.lblLatDirection = new System.Windows.Forms.Label();
			this.lblNumSats = new System.Windows.Forms.Label();
			this.Label2 = new System.Windows.Forms.Label();
			this.lblLon = new System.Windows.Forms.Label();
			this.Label5 = new System.Windows.Forms.Label();
			this.lblLat = new System.Windows.Forms.Label();
			this.Label3 = new System.Windows.Forms.Label();
			this.lblTime = new System.Windows.Forms.Label();
			this.lblMessageType = new System.Windows.Forms.Label();
			// 
			// btnStartGPS
			// 
			this.btnStartGPS.Location = new System.Drawing.Point(32, 8);
			this.btnStartGPS.Text = "Start GPS";
			this.btnStartGPS.Click += new System.EventHandler(this.btnStartGPS_Click);
			// 
			// btnStopGPS
			// 
			this.btnStopGPS.Location = new System.Drawing.Point(128, 8);
			this.btnStopGPS.Text = "Stop GPS";
			this.btnStopGPS.Click += new System.EventHandler(this.btnStopGPS_Click);
			// 
			// lbMessageDisplay
			// 
			this.lbMessageDisplay.Location = new System.Drawing.Point(16, 160);
			this.lbMessageDisplay.Size = new System.Drawing.Size(216, 86);
			// 
			// Label1
			// 
			this.Label1.Location = new System.Drawing.Point(40, 40);
			this.Label1.Size = new System.Drawing.Size(48, 16);
			this.Label1.Text = "Time:";
			this.Label1.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// lblBearing
			// 
			this.lblBearing.Location = new System.Drawing.Point(96, 136);
			this.lblBearing.Size = new System.Drawing.Size(64, 16);
			// 
			// Label7
			// 
			this.Label7.Location = new System.Drawing.Point(32, 136);
			this.Label7.Size = new System.Drawing.Size(56, 16);
			this.Label7.Text = "Bearing:";
			this.Label7.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// lblQuality
			// 
			this.lblQuality.Location = new System.Drawing.Point(96, 120);
			this.lblQuality.Size = new System.Drawing.Size(64, 16);
			// 
			// Label6
			// 
			this.Label6.Location = new System.Drawing.Point(32, 120);
			this.Label6.Size = new System.Drawing.Size(56, 16);
			this.Label6.Text = "Quality:";
			this.Label6.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// lblFixType
			// 
			this.lblFixType.Location = new System.Drawing.Point(96, 104);
			this.lblFixType.Size = new System.Drawing.Size(64, 16);
			// 
			// Label4
			// 
			this.Label4.Location = new System.Drawing.Point(32, 104);
			this.Label4.Size = new System.Drawing.Size(56, 16);
			this.Label4.Text = "Fix Type:";
			this.Label4.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// lblLonDirection
			// 
			this.lblLonDirection.Location = new System.Drawing.Point(176, 72);
			this.lblLonDirection.Size = new System.Drawing.Size(32, 16);
			this.lblLonDirection.TextAlign = System.Drawing.ContentAlignment.TopCenter;
			// 
			// lblLatDirection
			// 
			this.lblLatDirection.Location = new System.Drawing.Point(176, 56);
			this.lblLatDirection.Size = new System.Drawing.Size(32, 16);
			this.lblLatDirection.TextAlign = System.Drawing.ContentAlignment.TopCenter;
			// 
			// lblNumSats
			// 
			this.lblNumSats.Location = new System.Drawing.Point(96, 88);
			this.lblNumSats.Size = new System.Drawing.Size(64, 16);
			// 
			// Label2
			// 
			this.Label2.Location = new System.Drawing.Point(32, 88);
			this.Label2.Size = new System.Drawing.Size(56, 16);
			this.Label2.Text = "# Sats:";
			this.Label2.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// lblLon
			// 
			this.lblLon.Location = new System.Drawing.Point(96, 72);
			this.lblLon.Size = new System.Drawing.Size(64, 16);
			// 
			// Label5
			// 
			this.Label5.Location = new System.Drawing.Point(32, 72);
			this.Label5.Size = new System.Drawing.Size(56, 16);
			this.Label5.Text = "Lon:";
			this.Label5.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// lblLat
			// 
			this.lblLat.Location = new System.Drawing.Point(96, 56);
			this.lblLat.Size = new System.Drawing.Size(64, 16);
			// 
			// Label3
			// 
			this.Label3.Location = new System.Drawing.Point(32, 56);
			this.Label3.Size = new System.Drawing.Size(56, 16);
			this.Label3.Text = "Lat:";
			this.Label3.TextAlign = System.Drawing.ContentAlignment.TopRight;
			// 
			// lblTime
			// 
			this.lblTime.Location = new System.Drawing.Point(96, 40);
			this.lblTime.Size = new System.Drawing.Size(104, 16);
			// 
			// lblMessageType
			// 
			this.lblMessageType.Location = new System.Drawing.Point(8, 248);
			this.lblMessageType.Size = new System.Drawing.Size(224, 16);
			// 
			// Form1
			// 
			this.Controls.Add(this.lblMessageType);
			this.Controls.Add(this.Label1);
			this.Controls.Add(this.lblBearing);
			this.Controls.Add(this.Label7);
			this.Controls.Add(this.lblQuality);
			this.Controls.Add(this.Label6);
			this.Controls.Add(this.lblFixType);
			this.Controls.Add(this.Label4);
			this.Controls.Add(this.lblLonDirection);
			this.Controls.Add(this.lblLatDirection);
			this.Controls.Add(this.lblNumSats);
			this.Controls.Add(this.Label2);
			this.Controls.Add(this.lblLon);
			this.Controls.Add(this.Label5);
			this.Controls.Add(this.lblLat);
			this.Controls.Add(this.Label3);
			this.Controls.Add(this.lblTime);
			this.Controls.Add(this.lbMessageDisplay);
			this.Controls.Add(this.btnStopGPS);
			this.Controls.Add(this.btnStartGPS);
			this.Menu = this.mainMenu1;
			this.MinimizeBox = false;
			this.Text = "Test GPS (C#)";

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>

		static void Main() 
		{
			Application.Run(new Form1());
		}

		private GPSReader _gpsReader ;

		/// <summary>
		/// Initiate the GPS reading process
		/// StartRead launches the background thread and begins reading from the port
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		private void btnStartGPS_Click(object sender, System.EventArgs e)
		{
			lblMessageType.Text = "Read Starting..." ;
			_gpsReader.StartRead() ;
		}

		/// <summary>
		/// Terminate GPS reading process
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		private void btnStopGPS_Click(object sender, System.EventArgs e)
		{
			lblMessageType.Text = "Read Stopping..." ;
			_gpsReader.StopRead() ;
		}

		/// <summary>
		/// This event is called everytime a GPS sentence is received by the GPSReader
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="arg"></param>
		private void _gpsReader_OnGPSMessage(object sender, GPSEventArgs arg)
		{
			// Add the complete sentence to the listbox
			lbMessageDisplay.Items.Insert(0,arg.MessageText) ;
			if (lbMessageDisplay.Items.Count > 8)
				lbMessageDisplay.Items.RemoveAt(8) ;

			// Update the appropriate screen fields based on the message type
			switch(arg.MessageType)
			{
				case "GPGGA":
					lblTime.Text = ((int)arg.Time).ToString("D6") ;	// Show only whole time value
					lblLat.Text = arg.Lat.ToString("F6") ;			// Show exactly 6 decimal places
					lblLatDirection.Text = arg.LatDirection ;
					lblLon.Text = arg.Lon.ToString("F6") ;			// Show exactly 6 decimal places
					lblLonDirection.Text = arg.LonDirection ;
					lblNumSats.Text = arg.NumSats.ToString() ;
					lblQuality.Text = arg.Quality.ToString() ;
					break;
				case "GPGSA":
					lblFixType.Text = arg.FixType.ToString() ;
					break;
				case "GPRMC":
					lblBearing.Text = arg.Bearing.ToString() ;
					break;
				case "GPVTG":
					lblBearing.Text = arg.Bearing.ToString() ;
					break;
			}
		}

		/// <summary>
		/// This method is called when the background thread enters the GPS Read loop
		/// It is not required that your code handle this event.  It simply provides a confirmation
		/// that the reading process has actually begun
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="arg"></param>
		private void _gpsReader_OnGPSReadStart(object sender, EventArgs arg)
		{
	        lblMessageType.Text = "Read Started - Mode: " + _gpsReader.ActiveReadMode.ToString() ;
		}

		/// <summary>
		/// This method is called when the background thread exits the GPS Read loop
		/// It is not required that your code handle this event.  It simply provides a notification
		/// that the read loop is shutting down.  The event fires whether the thread terminated because
		/// of a call to StopRead or if an error occured.
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="arg"></param>
		private void _gpsReader_OnGPSReadStop(object sender, EventArgs arg)
		{
			lblMessageType.Text = "Read Stopped" ;
		}
	}
}