//

 // Copyright (C) 2014-2015 Stéphane Lenclud.

 //

 // This file is part of SharpDisplayManager.

 //

 // SharpDisplayManager is free software: you can redistribute it and/or modify

 // it under the terms of the GNU General Public License as published by

 // the Free Software Foundation, either version 3 of the License, or

 // (at your option) any later version.

 //

 // SharpDisplayManager is distributed in the hope that it will be useful,

 // but WITHOUT ANY WARRANTY; without even the implied warranty of

 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 // GNU General Public License for more details.

 //

 // You should have received a copy of the GNU General Public License

 // along with SharpDisplayManager.  If not, see <http://www.gnu.org/licenses/>.

 //

 using System;

 using System.Collections.Generic;

 using System.ComponentModel;

 using System.Data;

 using System.Drawing;

 using System.Linq;

 using System.Text;

 using System.Threading.Tasks;

 using System.Windows.Forms;

 using System.IO;

 using CodeProject.Dialog;

 using System.Drawing.Imaging;

 using System.ServiceModel;

 using System.Threading;

 using System.Diagnostics;

 using System.Deployment.Application;

 using System.Reflection;

 //NAudio

 using NAudio.CoreAudioApi;

 using NAudio.CoreAudioApi.Interfaces;

 using System.Runtime.InteropServices;

 //Network

 using NETWORKLIST;

 //

 using SharpDisplayClient;

 using SharpDisplay;

 using MiniDisplayInterop;

 namespace SharpDisplayManager

 {

     //Types declarations

     public delegate uint ColorProcessingDelegate(int aX, int aY, uint aPixel);

     public delegate int CoordinateTranslationDelegate(System.Drawing.Bitmap aBmp, int aInt);

     //Delegates are used for our thread safe method

     public delegate void AddClientDelegate(string aSessionId, ICallback aCallback);

     public delegate void RemoveClientDelegate(string aSessionId);

     public delegate void SetFieldDelegate(string SessionId, DataField aField);

     public delegate void SetFieldsDelegate(string SessionId, System.Collections.Generic.IList<DataField> aFields);

     public delegate void SetLayoutDelegate(string SessionId, TableLayout aLayout);

     public delegate void SetClientNameDelegate(string aSessionId, string aName);

 	public delegate void PlainUpdateDelegate();

     /// <summary>

     /// Our Display manager main form

     /// </summary>

 	[System.ComponentModel.DesignerCategory("Form")]

 	public partial class MainForm : MainFormHid, IMMNotificationClient

     {

         DateTime LastTickTime;

         Display iDisplay;

         System.Drawing.Bitmap iBmp;

         bool iCreateBitmap; //Workaround render to bitmap issues when minimized

         ServiceHost iServiceHost;

         // Our collection of clients sorted by session id.

         public Dictionary<string, ClientData> iClients;

         // The name of the client which informations are currently displayed.

         public string iCurrentClientSessionId;

         ClientData iCurrentClientData;

         //

         public bool iClosing;

 		//

 		public bool iSkipFrameRendering;

         //Function pointer for pixel color filtering

         ColorProcessingDelegate iColorFx;

         //Function pointer for pixel X coordinate intercept

         CoordinateTranslationDelegate iScreenX;

         //Function pointer for pixel Y coordinate intercept

         CoordinateTranslationDelegate iScreenY;

 		//NAudio

 		private MMDeviceEnumerator iMultiMediaDeviceEnumerator;

 		private MMDevice iMultiMediaDevice;

 		//Network

 		private NetworkManager iNetworkManager;

 		/// <summary>

 		/// Manage run when Windows startup option

 		/// </summary>

 		private StartupManager iStartupManager;

 		/// <summary>

 		/// System tray icon.

 		/// </summary>

 		private NotifyIconAdv iNotifyIcon;

         public MainForm()

         {

 			iSkipFrameRendering = false;

 			iClosing = false;

             iCurrentClientSessionId = "";

             iCurrentClientData = null;

             LastTickTime = DateTime.Now;

 			//Instantiate our display and register for events notifications

             iDisplay = new Display();

 			iDisplay.OnOpened += OnDisplayOpened;

 			iDisplay.OnClosed += OnDisplayClosed;

 			//

 			iClients = new Dictionary<string, ClientData>();

 			iStartupManager = new StartupManager();

 			iNotifyIcon = new NotifyIconAdv();

 			//Have our designer initialize its controls

             InitializeComponent();

 			//Populate device types

 			PopulateDeviceTypes();

 			//Initial status update 

             UpdateStatus();

             //We have a bug when drawing minimized and reusing our bitmap

             iBmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height, PixelFormat.Format32bppArgb);

             iCreateBitmap = false;

 			//Minimize our window if desired

 			if (Properties.Settings.Default.StartMinimized)

 			{

 				WindowState = FormWindowState.Minimized;

 			}

         }

 		/// <summary>

 		///

 		/// </summary>

 		/// <param name="sender"></param>

 		/// <param name="e"></param>

         private void MainForm_Load(object sender, EventArgs e)

         {

 			//Check if we are running a Click Once deployed application

 			if (ApplicationDeployment.IsNetworkDeployed)

 			{

 				//This is a proper Click Once installation, fetch and show our version number

 				this.Text += " - v" + ApplicationDeployment.CurrentDeployment.CurrentVersion;

 			}

 			else

 			{

 				//Not a proper Click Once installation, assuming development build then

 				this.Text += " - development";

 			}

 			//NAudio

 			iMultiMediaDeviceEnumerator = new MMDeviceEnumerator();

 			iMultiMediaDeviceEnumerator.RegisterEndpointNotificationCallback(this);			

 			UpdateAudioDeviceAndMasterVolumeThreadSafe();

 			//Network

 			iNetworkManager = new NetworkManager();

 			iNetworkManager.OnConnectivityChanged += OnConnectivityChanged;

 			UpdateNetworkStatus();

 			//Setup notification icon

 			SetupTrayIcon();

 			// To make sure start up with minimize to tray works

 			if (WindowState == FormWindowState.Minimized && Properties.Settings.Default.MinimizeToTray)

 			{

 				Visible = false;

 			}

 #if !DEBUG

 			//When not debugging we want the screen to be empty until a client takes over

 			ClearLayout();

 #else

 			//When developing we want at least one client for testing

 			StartNewClient("abcdefghijklmnopqrst-0123456789","ABCDEFGHIJKLMNOPQRST-0123456789");

 #endif

 			//Open display connection on start-up if needed

 			if (Properties.Settings.Default.DisplayConnectOnStartup)

 			{

 				OpenDisplayConnection();

 			}

 			//Start our server so that we can get client requests

 			StartServer();

 			//Register for HID events

 			RegisterHidDevices();

         }

 		/// <summary>

 		/// Called when our display is opened.

 		/// </summary>

 		/// <param name="aDisplay"></param>

 		private void OnDisplayOpened(Display aDisplay)

 		{

 			//Make sure we resume frame rendering

 			iSkipFrameRendering = false;

 			//Set our screen size now that our display is connected

 			//Our panelDisplay is the container of our tableLayoutPanel

 			//tableLayoutPanel will resize itself to fit the client size of our panelDisplay

 			//panelDisplay needs an extra 2 pixels for borders on each sides

 			//tableLayoutPanel will eventually be the exact size of our display

 			Size size = new Size(iDisplay.WidthInPixels() + 2, iDisplay.HeightInPixels() + 2);

 			panelDisplay.Size = size;

 			//Our display was just opened, update our UI

 			UpdateStatus();

 			//Initiate asynchronous request

 			iDisplay.RequestFirmwareRevision();

 			//Audio

 			UpdateMasterVolumeThreadSafe();

 			//Network

 			UpdateNetworkStatus();

 #if DEBUG

 			//Testing icon in debug, no arm done if icon not supported

 			//iDisplay.SetIconStatus(Display.TMiniDisplayIconType.EMiniDisplayIconRecording, 0, 1);

 			//iDisplay.SetAllIconsStatus(2);

 #endif

 		}

 		/// <summary>

 		/// Called when our display is closed.

 		/// </summary>

 		/// <param name="aDisplay"></param>

 		private void OnDisplayClosed(Display aDisplay)

 		{

 			//Our display was just closed, update our UI consequently

 			UpdateStatus();

 		}

 		public void OnConnectivityChanged(NetworkManager aNetwork, NLM_CONNECTIVITY newConnectivity)

 		{

 			//Update network status

 			UpdateNetworkStatus();			

 		}

 		/// <summary>

 		/// Update our Network Status

 		/// </summary>

 		private void UpdateNetworkStatus()

 		{

 			if (iDisplay.IsOpen())

 			{

                 iDisplay.SetIconOnOff(MiniDisplay.IconType.Internet, iNetworkManager.NetworkListManager.IsConnectedToInternet);

                 iDisplay.SetIconOnOff(MiniDisplay.IconType.NetworkSignal, iNetworkManager.NetworkListManager.IsConnected);

 			}

 		}

 		int iLastNetworkIconIndex = 0;

 		int iUpdateCountSinceLastNetworkAnimation = 0;

 		/// <summary>

 		/// 

 		/// </summary>

 		private void UpdateNetworkSignal(DateTime aLastTickTime, DateTime aNewTickTime)

 		{

 			iUpdateCountSinceLastNetworkAnimation++;

 			iUpdateCountSinceLastNetworkAnimation = iUpdateCountSinceLastNetworkAnimation % 4;

 			if (iDisplay.IsOpen() && iNetworkManager.NetworkListManager.IsConnected && iUpdateCountSinceLastNetworkAnimation==0)

 			{

                 int iconCount = iDisplay.IconCount(MiniDisplay.IconType.NetworkSignal);

 				if (iconCount <= 0)

 				{

 					//Prevents div by zero and other undefined behavior

 					return;

 				}

 				iLastNetworkIconIndex++;

 				iLastNetworkIconIndex = iLastNetworkIconIndex % (iconCount*2);

 				for (int i=0;i<iconCount;i++)

 				{

 					if (i < iLastNetworkIconIndex && !(i == 0 && iLastNetworkIconIndex > 3) && !(i == 1 && iLastNetworkIconIndex > 4))

 					{

                         iDisplay.SetIconOn(MiniDisplay.IconType.NetworkSignal, i);

 					}

 					else

 					{

                         iDisplay.SetIconOff(MiniDisplay.IconType.NetworkSignal, i);

 					}

 				}				

 			}

 		}

         /// <summary>

         /// Receive volume change notification and reflect changes on our slider.

         /// </summary>

         /// <param name="data"></param>

         public void OnVolumeNotificationThreadSafe(AudioVolumeNotificationData data)

         {

 			UpdateMasterVolumeThreadSafe();

         }

         /// <summary>

         /// Update master volume when user moves our slider.

         /// </summary>

         /// <param name="sender"></param>

         /// <param name="e"></param>

         private void trackBarMasterVolume_Scroll(object sender, EventArgs e)

         {

 			//Just like Windows Volume Mixer we unmute if the volume is adjusted

 			iMultiMediaDevice.AudioEndpointVolume.Mute = false;

 			//Set volume level according to our volume slider new position

 			iMultiMediaDevice.AudioEndpointVolume.MasterVolumeLevelScalar = trackBarMasterVolume.Value / 100.0f;

         }

 		/// <summary>

 		/// Mute check box changed.

 		/// </summary>

 		/// <param name="sender"></param>

 		/// <param name="e"></param>

 		private void checkBoxMute_CheckedChanged(object sender, EventArgs e)

 		{

 			iMultiMediaDevice.AudioEndpointVolume.Mute = checkBoxMute.Checked;

 		}

         /// <summary>

         /// Device State Changed

         /// </summary>

         public void OnDeviceStateChanged([MarshalAs(UnmanagedType.LPWStr)] string deviceId, [MarshalAs(UnmanagedType.I4)] DeviceState newState){}

         /// <summary>

         /// Device Added

         /// </summary>

         public void OnDeviceAdded([MarshalAs(UnmanagedType.LPWStr)] string pwstrDeviceId) { }

         /// <summary>

         /// Device Removed

         /// </summary>

         public void OnDeviceRemoved([MarshalAs(UnmanagedType.LPWStr)] string deviceId) { }

         /// <summary>

         /// Default Device Changed

         /// </summary>

         public void OnDefaultDeviceChanged(DataFlow flow, Role role, [MarshalAs(UnmanagedType.LPWStr)] string defaultDeviceId)

         {

             if (role == Role.Multimedia && flow == DataFlow.Render)

             {

                 UpdateAudioDeviceAndMasterVolumeThreadSafe();

             }

         }

         /// <summary>

         /// Property Value Changed

         /// </summary>

         /// <param name="pwstrDeviceId"></param>

         /// <param name="key"></param>

         public void OnPropertyValueChanged([MarshalAs(UnmanagedType.LPWStr)] string pwstrDeviceId, PropertyKey key){}

 		/// <summary>

 		/// Update master volume indicators based our current system states.

 		/// This typically includes volume levels and mute status.

 		/// </summary>

 		private void UpdateMasterVolumeThreadSafe()

 		{

 			if (this.InvokeRequired)

 			{

 				//Not in the proper thread, invoke ourselves

 				PlainUpdateDelegate d = new PlainUpdateDelegate(UpdateMasterVolumeThreadSafe);

 				this.Invoke(d, new object[] { });

 				return;

 			}

 			//Update volume slider

 			float volumeLevelScalar = iMultiMediaDevice.AudioEndpointVolume.MasterVolumeLevelScalar;

 			trackBarMasterVolume.Value = Convert.ToInt32(volumeLevelScalar * 100);

 			//Update mute checkbox

 			checkBoxMute.Checked = iMultiMediaDevice.AudioEndpointVolume.Mute;

 			//If our display connection is open we need to update its icons

 			if (iDisplay.IsOpen())

 			{

 				//First take care our our volume level icons

                 int volumeIconCount = iDisplay.IconCount(MiniDisplay.IconType.Volume);

 				if (volumeIconCount > 0)

 				{					

 					//Compute current volume level from system level and the number of segments in our display volume bar.

 					//That tells us how many segments in our volume bar needs to be turned on.

 					float currentVolume = volumeLevelScalar * volumeIconCount;

 					int segmentOnCount = Convert.ToInt32(currentVolume);

 					//Check if our segment count was rounded up, this will later be used for half brightness segment

 					bool roundedUp = segmentOnCount > currentVolume;

 					for (int i = 0; i < volumeIconCount; i++)

 					{

 						if (i < segmentOnCount)

 						{

 							//If we are dealing with our last segment and our segment count was rounded up then we will use half brightness.

 							if (i == segmentOnCount - 1 && roundedUp)

 							{

 								//Half brightness

                                 iDisplay.SetIconStatus(MiniDisplay.IconType.Volume, i, (iDisplay.IconStatusCount(MiniDisplay.IconType.Volume) - 1) / 2);

 							}

 							else

 							{

 								//Full brightness

                                 iDisplay.SetIconStatus(MiniDisplay.IconType.Volume, i, iDisplay.IconStatusCount(MiniDisplay.IconType.Volume) - 1);

 							}

 						}

 						else

 						{

                             iDisplay.SetIconStatus(MiniDisplay.IconType.Volume, i, 0);

 						}

 					}

 				}

 				//Take care our our mute icon

                 iDisplay.SetIconOnOff(MiniDisplay.IconType.Mute, iMultiMediaDevice.AudioEndpointVolume.Mute);

 			}

 		}

         /// <summary>

         /// 

         /// </summary>

         private void UpdateAudioDeviceAndMasterVolumeThreadSafe()

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

 				PlainUpdateDelegate d = new PlainUpdateDelegate(UpdateAudioDeviceAndMasterVolumeThreadSafe);

                 this.Invoke(d, new object[] { });

                 return;

             }

             //We are in the correct thread just go ahead.

             try

             {                

                 //Get our master volume            

 				iMultiMediaDevice = iMultiMediaDeviceEnumerator.GetDefaultAudioEndpoint(DataFlow.Render, Role.Multimedia);

 				//Update our label

 				labelDefaultAudioDevice.Text = iMultiMediaDevice.FriendlyName;

                 //Show our volume in our track bar

 				UpdateMasterVolumeThreadSafe();

                 //Register to get volume modifications

 				iMultiMediaDevice.AudioEndpointVolume.OnVolumeNotification += OnVolumeNotificationThreadSafe;

                 //

 				trackBarMasterVolume.Enabled = true;

             }

             catch (Exception ex)

             {

                 Debug.WriteLine("Exception thrown in UpdateAudioDeviceAndMasterVolume");

                 Debug.WriteLine(ex.ToString());

                 //Something went wrong S/PDIF device ca throw exception I guess

 				trackBarMasterVolume.Enabled = false;

             }

         }

 		/// <summary>

 		/// 

 		/// </summary>

 		private void PopulateDeviceTypes()

 		{

 			int count = Display.TypeCount();

 			for (int i = 0; i < count; i++)

 			{

 				comboBoxDisplayType.Items.Add(Display.TypeName((MiniDisplay.Type)i));

 			}

 		}

 		/// <summary>

 		///

 		/// </summary>

 		private void SetupTrayIcon()

 		{

 			iNotifyIcon.Icon = GetIcon("vfd.ico");

 			iNotifyIcon.Text = "Sharp Display Manager";

 			iNotifyIcon.Visible = true;

 			//Double click toggles visibility - typically brings up the application

 			iNotifyIcon.DoubleClick += delegate(object obj, EventArgs args)

 			{

 				SysTrayHideShow();

 			};

 			//Adding a context menu, useful to be able to exit the application

 			ContextMenu contextMenu = new ContextMenu();

 			//Context menu item to toggle visibility

 			MenuItem hideShowItem = new MenuItem("Hide/Show");

 			hideShowItem.Click += delegate(object obj, EventArgs args)

 			{

 				SysTrayHideShow();

 			};

 			contextMenu.MenuItems.Add(hideShowItem);

 			//Context menu item separator

 			contextMenu.MenuItems.Add(new MenuItem("-"));

 			//Context menu exit item

 			MenuItem exitItem = new MenuItem("Exit");

 			exitItem.Click += delegate(object obj, EventArgs args)

 			{

 				Application.Exit();

 			};

 			contextMenu.MenuItems.Add(exitItem);

 			iNotifyIcon.ContextMenu = contextMenu;

 		}

 		/// <summary>

 		/// Access icons from embedded resources.

 		/// </summary>

 		/// <param name="name"></param>

 		/// <returns></returns>

 		public static Icon GetIcon(string name)

 		{

 			name = "SharpDisplayManager.Resources." + name;

 			string[] names =

 			  Assembly.GetExecutingAssembly().GetManifestResourceNames();

 			for (int i = 0; i < names.Length; i++)

 			{

 				if (names[i].Replace('\\', '.') == name)

 				{

 					using (Stream stream = Assembly.GetExecutingAssembly().

 					  GetManifestResourceStream(names[i]))

 					{

 						return new Icon(stream);

 					}

 				}

 			}

 			return null;

 		}

         /// <summary>

         /// Set our current client.

         /// This will take care of applying our client layout and set data fields.

         /// </summary>

         /// <param name="aSessionId"></param>

         void SetCurrentClient(string aSessionId, bool aForce=false)

         {

             if (aSessionId == iCurrentClientSessionId)

             {

                 //Given client is already the current one.

                 //Don't bother changing anything then.

                 return;

             }

             //Check when was the last time we switched to that client

             if (iCurrentClientData != null)

             {

                 double lastSwitchToClientSecondsAgo = (DateTime.Now - iCurrentClientData.LastSwitchTime).TotalSeconds;

                 //TODO: put that hard coded value as a client property

                 //Clients should be able to define how often they can be interrupted

                 //Thus a background client can set this to zero allowing any other client to interrupt at any time

                 //We could also compute this delay by looking at the requests frequencies?

                 if (!aForce && (lastSwitchToClientSecondsAgo < 30)) //Make sure a client is on for at least 30 seconds

                 {

                     //Don't switch clients too often

                     return;

                 }

             }

             //Set current client ID.

             iCurrentClientSessionId = aSessionId;

             //Set the time we last switched to that client

             iClients[aSessionId].LastSwitchTime = DateTime.Now;

             //Fetch and set current client data.

             iCurrentClientData = iClients[aSessionId];

             //Apply layout and set data fields.

             UpdateTableLayoutPanel(iCurrentClientData);

         }

         private void buttonFont_Click(object sender, EventArgs e)

         {

             //fontDialog.ShowColor = true;

             //fontDialog.ShowApply = true;

             fontDialog.ShowEffects = true;

             fontDialog.Font = cds.Font;

             fontDialog.FixedPitchOnly = checkBoxFixedPitchFontOnly.Checked;

             //fontDialog.ShowHelp = true;

             //fontDlg.MaxSize = 40;

             //fontDlg.MinSize = 22;

             //fontDialog.Parent = this;

             //fontDialog.StartPosition = FormStartPosition.CenterParent;

             //DlgBox.ShowDialog(fontDialog);

             //if (fontDialog.ShowDialog(this) != DialogResult.Cancel)

             if (DlgBox.ShowDialog(fontDialog) != DialogResult.Cancel)

             {

                 //Set the fonts to all our labels in our layout

                 foreach (Control ctrl in tableLayoutPanel.Controls)

                 {

                     if (ctrl is MarqueeLabel)

                     {

                         ((MarqueeLabel)ctrl).Font = fontDialog.Font;

                     }

                 }

                 //Save font settings

                 cds.Font = fontDialog.Font;

                 Properties.Settings.Default.Save();

                 //

                 CheckFontHeight();

             }

         }

         /// <summary>

         ///

         /// </summary>

         void CheckFontHeight()

         {

             //Show font height and width

             labelFontHeight.Text = "Font height: " + cds.Font.Height;

             float charWidth = IsFixedWidth(cds.Font);

             if (charWidth == 0.0f)

             {

                 labelFontWidth.Visible = false;

             }

             else

             {

                 labelFontWidth.Visible = true;

                 labelFontWidth.Text = "Font width: " + charWidth;

             }

             MarqueeLabel label = null;

             //Get the first label control we can find

             foreach (Control ctrl in tableLayoutPanel.Controls)

             {

                 if (ctrl is MarqueeLabel)

                 {

                     label = (MarqueeLabel)ctrl;

                     break;

                 }

             }

             //Now check font height and show a warning if needed.

             if (label != null && label.Font.Height > label.Height)

             {

                 labelWarning.Text = "WARNING: Selected font is too height by " + (label.Font.Height - label.Height) + " pixels!";

                 labelWarning.Visible = true;

             }

             else

             {

                 labelWarning.Visible = false;

             }

         }

         private void buttonCapture_Click(object sender, EventArgs e)

         {

             System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height);

             tableLayoutPanel.DrawToBitmap(bmp, tableLayoutPanel.ClientRectangle);

             //Bitmap bmpToSave = new Bitmap(bmp);

             bmp.Save("D:\\capture.png");

             ((MarqueeLabel)tableLayoutPanel.Controls[0]).Text = "Captured";

             /*

             string outputFileName = "d:\\capture.png";

             using (MemoryStream memory = new MemoryStream())

             {

                 using (FileStream fs = new FileStream(outputFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite))

                 {

                     bmp.Save(memory, System.Drawing.Imaging.ImageFormat.Png);

                     byte[] bytes = memory.ToArray();

                     fs.Write(bytes, 0, bytes.Length);

                 }

             }

              */

         }

         private void CheckForRequestResults()

         {

             if (iDisplay.IsRequestPending())

             {

                 switch (iDisplay.AttemptRequestCompletion())

                 {

                     case MiniDisplay.Request.FirmwareRevision:

                         toolStripStatusLabelConnect.Text += " v" + iDisplay.FirmwareRevision();

                         //Issue next request then

                         iDisplay.RequestPowerSupplyStatus();

                         break;

                     case MiniDisplay.Request.PowerSupplyStatus:

                         if (iDisplay.PowerSupplyStatus())

                         {

                             toolStripStatusLabelPower.Text = "ON";

                         }

                         else

                         {

                             toolStripStatusLabelPower.Text = "OFF";

                         }

                         //Issue next request then

                         iDisplay.RequestDeviceId();

                         break;

                     case MiniDisplay.Request.DeviceId:

                         toolStripStatusLabelConnect.Text += " - " + iDisplay.DeviceId();

                         //No more request to issue

                         break;

                 }

             }

         }

         public static uint ColorWhiteIsOn(int aX, int aY, uint aPixel)

         {

             if ((aPixel & 0x00FFFFFF) == 0x00FFFFFF)

             {

                 return 0xFFFFFFFF;

             }

             return 0x00000000;

         }

         public static uint ColorUntouched(int aX, int aY, uint aPixel)

         {

             return aPixel;

         }

         public static uint ColorInversed(int aX, int aY, uint aPixel)

         {

             return ~aPixel;

         }

         public static uint ColorChessboard(int aX, int aY, uint aPixel)

         {

             if ((aX % 2 == 0) && (aY % 2 == 0))

             {

                 return ~aPixel;

             }

             else if ((aX % 2 != 0) && (aY % 2 != 0))

             {

                 return ~aPixel;

             }

             return 0x00000000;

         }

         public static int ScreenReversedX(System.Drawing.Bitmap aBmp, int aX)

         {

             return aBmp.Width - aX - 1;

         }

         public int ScreenReversedY(System.Drawing.Bitmap aBmp, int aY)

         {

             return iBmp.Height - aY - 1;

         }

         public int ScreenX(System.Drawing.Bitmap aBmp, int aX)

         {

             return aX;

         }

         public int ScreenY(System.Drawing.Bitmap aBmp, int aY)

         {

             return aY;

         }

         /// <summary>

         /// Select proper pixel delegates according to our current settings.

         /// </summary>

         private void SetupPixelDelegates()

         {

             //Select our pixel processing routine

             if (cds.InverseColors)

             {

                 //iColorFx = ColorChessboard;

                 iColorFx = ColorInversed;

             }

             else

             {

                 iColorFx = ColorWhiteIsOn;

             }

             //Select proper coordinate translation functions

             //We used delegate/function pointer to support reverse screen without doing an extra test on each pixels

             if (cds.ReverseScreen)

             {

                 iScreenX = ScreenReversedX;

                 iScreenY = ScreenReversedY;

             }

             else

             {

                 iScreenX = ScreenX;

                 iScreenY = ScreenY;

             }

         }

         //This is our timer tick responsible to perform our render

         private void timer_Tick(object sender, EventArgs e)

         {

             //Update our animations

             DateTime NewTickTime = DateTime.Now;

 			UpdateNetworkSignal(LastTickTime, NewTickTime);

             //Update animation for all our marquees

             foreach (Control ctrl in tableLayoutPanel.Controls)

             {

                 if (ctrl is MarqueeLabel)

                 {

                     ((MarqueeLabel)ctrl).UpdateAnimation(LastTickTime, NewTickTime);

                 }

             }

             //Update our display

             if (iDisplay.IsOpen())

             {

                 CheckForRequestResults();

 				//Check if frame rendering is needed

 				//Typically used when showing clock

 				if (!iSkipFrameRendering)

 				{

 					//Draw to bitmap

 					if (iCreateBitmap)

 					{

 						iBmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height, PixelFormat.Format32bppArgb);

 					}

 					tableLayoutPanel.DrawToBitmap(iBmp, tableLayoutPanel.ClientRectangle);

 					//iBmp.Save("D:\\capture.png");

 					//Send it to our display

 					for (int i = 0; i < iBmp.Width; i++)

 					{

 						for (int j = 0; j < iBmp.Height; j++)

 						{

 							unchecked

 							{

 								//Get our processed pixel coordinates

 								int x = iScreenX(iBmp, i);

 								int y = iScreenY(iBmp, j);

 								//Get pixel color

 								uint color = (uint)iBmp.GetPixel(i, j).ToArgb();

 								//Apply color effects

 								color = iColorFx(x, y, color);

 								//Now set our pixel

 								iDisplay.SetPixel(x, y, color);

 							}

 						}

 					}

 					iDisplay.SwapBuffers();

 				}

             }

             //Compute instant FPS

             toolStripStatusLabelFps.Text = (1.0/NewTickTime.Subtract(LastTickTime).TotalSeconds).ToString("F0") + " / " + (1000/timer.Interval).ToString() + " FPS";

             LastTickTime = NewTickTime;

         }

 		/// <summary>

 		/// Attempt to establish connection with our display hardware.

 		/// </summary>

         private void OpenDisplayConnection()

         {

             CloseDisplayConnection();

             if (!iDisplay.Open((MiniDisplay.Type)cds.DisplayType))

             {   

 				UpdateStatus();               

 				toolStripStatusLabelConnect.Text = "Connection error";

             }

         }

         private void CloseDisplayConnection()

         {

 			//Status will be updated upon receiving the closed event

 			if (iDisplay == null || !iDisplay.IsOpen())

 			{

 				return;

 			}

 			//Do not clear if we gave up on rendering already.

 			//This means we will keep on displaying clock on MDM166AA for instance.

 			if (!iSkipFrameRendering)

 			{

 				iDisplay.Clear();

 				iDisplay.SwapBuffers();

 			}

 			iDisplay.SetAllIconsStatus(0); //Turn off all icons

             iDisplay.Close();

         }

         private void buttonOpen_Click(object sender, EventArgs e)

         {

             OpenDisplayConnection();

         }

         private void buttonClose_Click(object sender, EventArgs e)

         {

             CloseDisplayConnection();

         }

         private void buttonClear_Click(object sender, EventArgs e)

         {

             iDisplay.Clear();

             iDisplay.SwapBuffers();

         }

         private void buttonFill_Click(object sender, EventArgs e)

         {

             iDisplay.Fill();

             iDisplay.SwapBuffers();

         }

         private void trackBarBrightness_Scroll(object sender, EventArgs e)

         {

             cds.Brightness = trackBarBrightness.Value;

             Properties.Settings.Default.Save();

             iDisplay.SetBrightness(trackBarBrightness.Value);

         }

         /// <summary>

         /// CDS stands for Current Display Settings

         /// </summary>

         private DisplaySettings cds

         {

             get

             {

                 DisplaysSettings settings = Properties.Settings.Default.DisplaysSettings;

                 if (settings == null)

                 {

                     settings = new DisplaysSettings();

                     settings.Init();

                     Properties.Settings.Default.DisplaysSettings = settings;

                 }

                 //Make sure all our settings have been created

                 while (settings.Displays.Count <= Properties.Settings.Default.CurrentDisplayIndex)

                 {

                     settings.Displays.Add(new DisplaySettings());

                 }

                 DisplaySettings displaySettings = settings.Displays[Properties.Settings.Default.CurrentDisplayIndex];

                 return displaySettings;

             }

         }

         /// <summary>

         /// Check if the given font has a fixed character pitch.

         /// </summary>

         /// <param name="ft"></param>

         /// <returns>0.0f if this is not a monospace font, otherwise returns the character width.</returns>

         public float IsFixedWidth(Font ft)

         {

             Graphics g = CreateGraphics();

             char[] charSizes = new char[] { 'i', 'a', 'Z', '%', '#', 'a', 'B', 'l', 'm', ',', '.' };

             float charWidth = g.MeasureString("I", ft, Int32.MaxValue, StringFormat.GenericTypographic).Width;

             bool fixedWidth = true;

             foreach (char c in charSizes)

                 if (g.MeasureString(c.ToString(), ft, Int32.MaxValue, StringFormat.GenericTypographic).Width != charWidth)

                     fixedWidth = false;

             if (fixedWidth)

             {

                 return charWidth;

             }

             return 0.0f;

         }

 		/// <summary>

 		/// Synchronize UI with settings

 		/// </summary>

         private void UpdateStatus()

         {            

             //Load settings

             checkBoxShowBorders.Checked = cds.ShowBorders;

             tableLayoutPanel.CellBorderStyle = (cds.ShowBorders ? TableLayoutPanelCellBorderStyle.Single : TableLayoutPanelCellBorderStyle.None);

             //Set the proper font to each of our labels

             foreach (MarqueeLabel ctrl in tableLayoutPanel.Controls)

             {

                 ctrl.Font = cds.Font;

             }

             CheckFontHeight();

 			//Check if "run on Windows startup" is enabled

 			checkBoxAutoStart.Checked = iStartupManager.Startup;

 			//

             checkBoxConnectOnStartup.Checked = Properties.Settings.Default.DisplayConnectOnStartup;

 			checkBoxMinimizeToTray.Checked = Properties.Settings.Default.MinimizeToTray;

 			checkBoxStartMinimized.Checked = Properties.Settings.Default.StartMinimized;

 			labelStartFileName.Text = Properties.Settings.Default.StartFileName;

             checkBoxReverseScreen.Checked = cds.ReverseScreen;

             checkBoxInverseColors.Checked = cds.InverseColors;

 			checkBoxShowVolumeLabel.Checked = cds.ShowVolumeLabel;

             checkBoxScaleToFit.Checked = cds.ScaleToFit;

             maskedTextBoxMinFontSize.Enabled = cds.ScaleToFit;

             labelMinFontSize.Enabled = cds.ScaleToFit;

             maskedTextBoxMinFontSize.Text = cds.MinFontSize.ToString();

 			maskedTextBoxScrollingSpeed.Text = cds.ScrollingSpeedInPixelsPerSecond.ToString();

             comboBoxDisplayType.SelectedIndex = cds.DisplayType;

             timer.Interval = cds.TimerInterval;

             maskedTextBoxTimerInterval.Text = cds.TimerInterval.ToString();

             textBoxScrollLoopSeparator.Text = cds.Separator;

             //

             SetupPixelDelegates();

             if (iDisplay.IsOpen())

             {

 				//We have a display connection

 				//Reflect that in our UI

 				tableLayoutPanel.Enabled = true;

 				panelDisplay.Enabled = true;

                 //Only setup brightness if display is open

                 trackBarBrightness.Minimum = iDisplay.MinBrightness();

                 trackBarBrightness.Maximum = iDisplay.MaxBrightness();

 				if (cds.Brightness < iDisplay.MinBrightness() || cds.Brightness > iDisplay.MaxBrightness())

 				{

 					//Brightness out of range, this can occur when using auto-detect

 					//Use max brightness instead

 					trackBarBrightness.Value = iDisplay.MaxBrightness();

 					iDisplay.SetBrightness(iDisplay.MaxBrightness());

 				}

 				else

 				{

 					trackBarBrightness.Value = cds.Brightness;

 					iDisplay.SetBrightness(cds.Brightness);

 				}

 				//Try compute the steps to something that makes sense

                 trackBarBrightness.LargeChange = Math.Max(1, (iDisplay.MaxBrightness() - iDisplay.MinBrightness()) / 5);

                 trackBarBrightness.SmallChange = 1;

                 //

                 buttonFill.Enabled = true;

                 buttonClear.Enabled = true;

                 buttonOpen.Enabled = false;

                 buttonClose.Enabled = true;

                 trackBarBrightness.Enabled = true;

                 toolStripStatusLabelConnect.Text = "Connected - " + iDisplay.Vendor() + " - " + iDisplay.Product();

                 //+ " - " + iDisplay.SerialNumber();

                 if (iDisplay.SupportPowerOnOff())

                 {

                     buttonPowerOn.Enabled = true;

                     buttonPowerOff.Enabled = true;

                 }

                 else

                 {

                     buttonPowerOn.Enabled = false;

                     buttonPowerOff.Enabled = false;

                 }

                 if (iDisplay.SupportClock())

                 {

                     buttonShowClock.Enabled = true;

                     buttonHideClock.Enabled = true;

                 }

                 else

                 {

                     buttonShowClock.Enabled = false;

                     buttonHideClock.Enabled = false;

                 }

 				//Check if Volume Label is supported. To date only MDM166AA supports that crap :)

 				checkBoxShowVolumeLabel.Enabled = iDisplay.IconCount(MiniDisplay.IconType.VolumeLabel)>0;

 				if (cds.ShowVolumeLabel)

 				{

                     iDisplay.SetIconOn(MiniDisplay.IconType.VolumeLabel);

 				}

 				else

 				{

                     iDisplay.SetIconOff(MiniDisplay.IconType.VolumeLabel);

 				}

             }

             else

             {

 				//Display is connection not available

 				//Reflect that in our UI

 				checkBoxShowVolumeLabel.Enabled = false;

 				tableLayoutPanel.Enabled = false;

 				panelDisplay.Enabled = false;

                 buttonFill.Enabled = false;

                 buttonClear.Enabled = false;

                 buttonOpen.Enabled = true;

                 buttonClose.Enabled = false;

                 trackBarBrightness.Enabled = false;

                 buttonPowerOn.Enabled = false;

                 buttonPowerOff.Enabled = false;

                 buttonShowClock.Enabled = false;

                 buttonHideClock.Enabled = false;

                 toolStripStatusLabelConnect.Text = "Disconnected";

                 toolStripStatusLabelPower.Text = "N/A";

             }

         }

 		/// <summary>

 		/// 

 		/// </summary>

 		/// <param name="sender"></param>

 		/// <param name="e"></param>

 		private void checkBoxShowVolumeLabel_CheckedChanged(object sender, EventArgs e)

 		{

 			cds.ShowVolumeLabel = checkBoxShowVolumeLabel.Checked;

 			Properties.Settings.Default.Save();

 			UpdateStatus();

 		}

         private void checkBoxShowBorders_CheckedChanged(object sender, EventArgs e)

         {

             //Save our show borders setting

             tableLayoutPanel.CellBorderStyle = (checkBoxShowBorders.Checked ? TableLayoutPanelCellBorderStyle.Single : TableLayoutPanelCellBorderStyle.None);

             cds.ShowBorders = checkBoxShowBorders.Checked;

             Properties.Settings.Default.Save();

             CheckFontHeight();

         }

         private void checkBoxConnectOnStartup_CheckedChanged(object sender, EventArgs e)

         {

             //Save our connect on startup setting

             Properties.Settings.Default.DisplayConnectOnStartup = checkBoxConnectOnStartup.Checked;

             Properties.Settings.Default.Save();

         }

 		private void checkBoxMinimizeToTray_CheckedChanged(object sender, EventArgs e)

 		{

 			//Save our "Minimize to tray" setting

 			Properties.Settings.Default.MinimizeToTray = checkBoxMinimizeToTray.Checked;

 			Properties.Settings.Default.Save();

 		}

 		private void checkBoxStartMinimized_CheckedChanged(object sender, EventArgs e)

 		{

 			//Save our "Start minimized" setting

 			Properties.Settings.Default.StartMinimized = checkBoxStartMinimized.Checked;

 			Properties.Settings.Default.Save();

 		}

 		private void checkBoxAutoStart_CheckedChanged(object sender, EventArgs e)

 		{

 			iStartupManager.Startup = checkBoxAutoStart.Checked;

 		}

         private void checkBoxReverseScreen_CheckedChanged(object sender, EventArgs e)

         {

             //Save our reverse screen setting

             cds.ReverseScreen = checkBoxReverseScreen.Checked;

             Properties.Settings.Default.Save();

             SetupPixelDelegates();

         }

         private void checkBoxInverseColors_CheckedChanged(object sender, EventArgs e)

         {

             //Save our inverse colors setting

             cds.InverseColors = checkBoxInverseColors.Checked;

             Properties.Settings.Default.Save();

             SetupPixelDelegates();

         }

         private void checkBoxScaleToFit_CheckedChanged(object sender, EventArgs e)

         {

             //Save our scale to fit setting

             cds.ScaleToFit = checkBoxScaleToFit.Checked;

             Properties.Settings.Default.Save();

             //

             labelMinFontSize.Enabled = cds.ScaleToFit;

             maskedTextBoxMinFontSize.Enabled = cds.ScaleToFit;

         }

         private void MainForm_Resize(object sender, EventArgs e)

         {

             if (WindowState == FormWindowState.Minimized)

             {

                 // Do some stuff

                 //iBmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height, PixelFormat.Format32bppArgb);

                 iCreateBitmap = true;

             }

         }

         private void MainForm_FormClosing(object sender, FormClosingEventArgs e)

         {

 			iNetworkManager.Dispose();

 			CloseDisplayConnection();

             StopServer();

             e.Cancel = iClosing;

         }

         public void StartServer()

         {

             iServiceHost = new ServiceHost

                 (

                     typeof(Session),

                     new Uri[] { new Uri("net.tcp://localhost:8001/") }

                 );

             iServiceHost.AddServiceEndpoint(typeof(IService), new NetTcpBinding(SecurityMode.None, true), "DisplayService");

             iServiceHost.Open();

         }

         public void StopServer()

         {

             if (iClients.Count > 0 && !iClosing)

             {

                 //Tell our clients

                 iClosing = true;

                 BroadcastCloseEvent();

             }

             else if (iClosing)

             {

                 if (MessageBox.Show("Force exit?", "Waiting for clients...", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes)

                 {

                     iClosing = false; //We make sure we force close if asked twice

                 }

             }

             else

             {

                 //We removed that as it often lags for some reason

                 //iServiceHost.Close();

             }

         }

         public void BroadcastCloseEvent()

         {

             Trace.TraceInformation("BroadcastCloseEvent - start");

             var inactiveClients = new List<string>();

             foreach (var client in iClients)

             {

                 //if (client.Key != eventData.ClientName)

                 {

                     try

                     {

                         Trace.TraceInformation("BroadcastCloseEvent - " + client.Key);

                         client.Value.Callback.OnCloseOrder(/*eventData*/);

                     }

                     catch (Exception ex)

                     {

                         inactiveClients.Add(client.Key);

                     }

                 }

             }

             if (inactiveClients.Count > 0)

             {

                 foreach (var client in inactiveClients)

                 {

                     iClients.Remove(client);

                     Program.iMainForm.treeViewClients.Nodes.Remove(Program.iMainForm.treeViewClients.Nodes.Find(client, false)[0]);

                 }

             }

 			if (iClients.Count==0)

 			{

 				ClearLayout();

 			}

         }

 		/// <summary>

 		/// Just remove all our fields.

 		/// </summary>

 		private void ClearLayout()

 		{

 			tableLayoutPanel.Controls.Clear();

 			tableLayoutPanel.RowStyles.Clear();

 			tableLayoutPanel.ColumnStyles.Clear();

 			iCurrentClientData = null;

 		}

 		/// <summary>

 		/// Just launch a demo client.

 		/// </summary>

 		private void StartNewClient(string aTopText = "", string aBottomText = "")

 		{

 			Thread clientThread = new Thread(SharpDisplayClient.Program.MainWithParams);

 			SharpDisplayClient.StartParams myParams = new SharpDisplayClient.StartParams(new Point(this.Right, this.Top),aTopText,aBottomText);

 			clientThread.Start(myParams);

 			BringToFront();

 		}

         private void buttonStartClient_Click(object sender, EventArgs e)

         {

 			StartNewClient();

         }

         private void buttonSuspend_Click(object sender, EventArgs e)

         {

             LastTickTime = DateTime.Now; //Reset timer to prevent jump

             timer.Enabled = !timer.Enabled;

             if (!timer.Enabled)

             {

                 buttonSuspend.Text = "Run";

             }

             else

             {

                 buttonSuspend.Text = "Pause";

             }

         }

         private void buttonCloseClients_Click(object sender, EventArgs e)

         {

             BroadcastCloseEvent();

         }

         private void treeViewClients_AfterSelect(object sender, TreeViewEventArgs e)

         {

             //Root node must have at least one child

             if (e.Node.Nodes.Count == 0)

             {

                 return;

             }

             //If the selected node is the root node of a client then switch to it

             string sessionId=e.Node.Nodes[0].Text; //First child of a root node is the sessionId

             if (iClients.ContainsKey(sessionId)) //Check that's actually what we are looking at

             {

                 //We have a valid session just switch to that client

                 SetCurrentClient(sessionId,true);

             }

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="aSessionId"></param>

         /// <param name="aCallback"></param>

         public void AddClientThreadSafe(string aSessionId, ICallback aCallback)

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 AddClientDelegate d = new AddClientDelegate(AddClientThreadSafe);

                 this.Invoke(d, new object[] { aSessionId, aCallback });

             }

             else

             {

                 //We are in the proper thread

                 //Add this session to our collection of clients

                 ClientData newClient = new ClientData(aSessionId, aCallback);

                 Program.iMainForm.iClients.Add(aSessionId, newClient);

                 //Add this session to our UI

                 UpdateClientTreeViewNode(newClient);

             }

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="aSessionId"></param>

         public void RemoveClientThreadSafe(string aSessionId)

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 RemoveClientDelegate d = new RemoveClientDelegate(RemoveClientThreadSafe);

                 this.Invoke(d, new object[] { aSessionId });

             }

             else

             {

                 //We are in the proper thread

                 //Remove this session from both client collection and UI tree view

                 if (Program.iMainForm.iClients.Keys.Contains(aSessionId))

                 {

                     Program.iMainForm.iClients.Remove(aSessionId);

                     Program.iMainForm.treeViewClients.Nodes.Remove(Program.iMainForm.treeViewClients.Nodes.Find(aSessionId, false)[0]);

                 }

 				if (iClients.Count == 0)

 				{

 					//Clear our screen when last client disconnects

 					ClearLayout();

 					if (iClosing)

 					{

 						//We were closing our form

 						//All clients are now closed

 						//Just resume our close operation

 						iClosing = false;

 						Close();

 					}

 				}

             }

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="aSessionId"></param>

         /// <param name="aLayout"></param>

         public void SetClientLayoutThreadSafe(string aSessionId, TableLayout aLayout)

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 SetLayoutDelegate d = new SetLayoutDelegate(SetClientLayoutThreadSafe);

                 this.Invoke(d, new object[] { aSessionId, aLayout });

             }

             else

             {

                 ClientData client = iClients[aSessionId];

                 if (client != null)

                 {

                     //Don't change a thing if the layout is the same

                     if (!client.Layout.IsSameAs(aLayout))

                     {

                         //Set our client layout then

                         client.Layout = aLayout;

                         //

                         UpdateClientTreeViewNode(client);

                     }

                 }

             }

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="aSessionId"></param>

         /// <param name="aField"></param>

         public void SetClientFieldThreadSafe(string aSessionId, DataField aField)

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 SetFieldDelegate d = new SetFieldDelegate(SetClientFieldThreadSafe);

                 this.Invoke(d, new object[] { aSessionId, aField });

             }

             else

             {

                 //We are in the proper thread

                 //Call the non-thread-safe variant

                 SetClientField(aSessionId, aField);

             }

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="aSessionId"></param>

         /// <param name="aField"></param>

         private void SetClientField(string aSessionId, DataField aField)

         {   

             //TODO: should check if the field actually changed?

             ClientData client = iClients[aSessionId];

             bool layoutChanged = false;

             bool contentChanged = true;

             //Make sure all our fields are in place

             while (client.Fields.Count < (aField.Index + 1))

             {

                 //Add a data field with proper index

                 client.Fields.Add(new DataField(client.Fields.Count));

                 layoutChanged = true;

             }

             //Now that we know hour fields are in place just update that one

             client.Fields[aField.Index] = aField;

             if (client.Fields[aField.Index].IsSameLayout(aField))

             {

                 //If we are updating a field in our current client we need to update it in our panel

                 if (aSessionId == iCurrentClientSessionId)

                 {

                     if (aField.IsText && aField.Index < tableLayoutPanel.Controls.Count && tableLayoutPanel.Controls[aField.Index] is MarqueeLabel)

                     {

                         //Text field control already in place, just change the text

                         MarqueeLabel label = (MarqueeLabel)tableLayoutPanel.Controls[aField.Index];

                         contentChanged = (label.Text != aField.Text || label.TextAlign != aField.Alignment);

                         label.Text = aField.Text;

                         label.TextAlign = aField.Alignment;

                     }

                     else if (aField.IsBitmap && aField.Index < tableLayoutPanel.Controls.Count && tableLayoutPanel.Controls[aField.Index] is PictureBox)

                     {

                         contentChanged = true; //TODO: Bitmap comp or should we leave that to clients?

                         //Bitmap field control already in place just change the bitmap

                         PictureBox pictureBox = (PictureBox)tableLayoutPanel.Controls[aField.Index];

                         pictureBox.Image = aField.Bitmap;

                     }

                     else

                     {

                         layoutChanged = true;

                     }

                 }

             }

             else

             {                

                 layoutChanged = true;

             }

             //If either content or layout changed we need to update our tree view to reflect the changes

             if (contentChanged || layoutChanged)

             {

                 UpdateClientTreeViewNode(client);

                 //

                 if (layoutChanged)

                 {

                     Debug.Print("Layout changed");

                     //Our layout has changed, if we are already the current client we need to update our panel

                     if (aSessionId == iCurrentClientSessionId)

                     {

                         //Apply layout and set data fields.

                         UpdateTableLayoutPanel(iCurrentClientData);

                     }

                 }

             }

             //When a client field is set we try switching to this client to present the new information to our user

             SetCurrentClient(aSessionId);

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="aTexts"></param>

         public void SetClientFieldsThreadSafe(string aSessionId, System.Collections.Generic.IList<DataField> aFields)

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 SetFieldsDelegate d = new SetFieldsDelegate(SetClientFieldsThreadSafe);

                 this.Invoke(d, new object[] { aSessionId, aFields });

             }

             else

             {

                 //Put each our text fields in a label control

                 foreach (DataField field in aFields)

                 {

                     SetClientField(aSessionId, field);

                 }

             }

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="aSessionId"></param>

         /// <param name="aName"></param>

         public void SetClientNameThreadSafe(string aSessionId, string aName)

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 SetClientNameDelegate d = new SetClientNameDelegate(SetClientNameThreadSafe);

                 this.Invoke(d, new object[] { aSessionId, aName });

             }

             else

             {

                 //We are in the proper thread

                 //Get our client

                 ClientData client = iClients[aSessionId];

                 if (client != null)

                 {

                     //Set its name

                     client.Name = aName;

                     //Update our tree-view

                     UpdateClientTreeViewNode(client);

                 }

             }

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="aClient"></param>

         private void UpdateClientTreeViewNode(ClientData aClient)

         {

             Debug.Print("UpdateClientTreeViewNode");

             if (aClient == null)

             {

                 return;

             }

             TreeNode node = null;

             //Check that our client node already exists

             //Get our client root node using its key which is our session ID

             TreeNode[] nodes = treeViewClients.Nodes.Find(aClient.SessionId, false);

             if (nodes.Count()>0)

             {

                 //We already have a node for that client

                 node = nodes[0];

                 //Clear children as we are going to recreate them below

                 node.Nodes.Clear();

             }

             else

             {

                 //Client node does not exists create a new one

                 treeViewClients.Nodes.Add(aClient.SessionId, aClient.SessionId);

                 node = treeViewClients.Nodes.Find(aClient.SessionId, false)[0];

             }

             if (node != null)

             {

                 //Change its name

                 if (aClient.Name != "")

                 {

                     //We have a name, us it as text for our root node

                     node.Text = aClient.Name;

                     //Add a child with SessionId

                     node.Nodes.Add(new TreeNode(aClient.SessionId));

                 }

                 else

                 {

                     //No name, use session ID instead

                     node.Text = aClient.SessionId;

                 }

                 if (aClient.Fields.Count > 0)

                 {

                     //Create root node for our texts

                     TreeNode textsRoot = new TreeNode("Fields");

                     node.Nodes.Add(textsRoot);

                     //For each text add a new entry

                     foreach (DataField field in aClient.Fields)

                     {

                         if (!field.IsBitmap)

                         {

                             DataField textField = (DataField)field;

                             textsRoot.Nodes.Add(new TreeNode("[Text]" + textField.Text));

                         }

                         else

                         {

                             textsRoot.Nodes.Add(new TreeNode("[Bitmap]"));

                         }

                     }

                 }

                 node.ExpandAll();

             }

         }

         /// <summary>

         /// Update our table layout row styles to make sure each rows have similar height

         /// </summary>

         private void UpdateTableLayoutRowStyles()

         {

             foreach (RowStyle rowStyle in tableLayoutPanel.RowStyles)

             {

                 rowStyle.SizeType = SizeType.Percent;

                 rowStyle.Height = 100 / tableLayoutPanel.RowCount;

             }

         }

         /// <summary>

         /// Update our display table layout.

         /// </summary>

         /// <param name="aLayout"></param>

         private void UpdateTableLayoutPanel(ClientData aClient)

         {

             Debug.Print("UpdateClientTreeViewNode");

 			if (aClient == null)

 			{

 				//Just drop it

 				return;

 			}

             TableLayout layout = aClient.Layout;

             int fieldCount = 0;

             //First clean our current panel

             tableLayoutPanel.Controls.Clear();

             tableLayoutPanel.RowStyles.Clear();

             tableLayoutPanel.ColumnStyles.Clear();

             tableLayoutPanel.RowCount = 0;

             tableLayoutPanel.ColumnCount = 0;

             while (tableLayoutPanel.RowCount < layout.Rows.Count)

             {

                 tableLayoutPanel.RowCount++;

             }

             while (tableLayoutPanel.ColumnCount < layout.Columns.Count)

             {

                 tableLayoutPanel.ColumnCount++;

             }

             for (int i = 0; i < tableLayoutPanel.ColumnCount; i++)

             {

                 //Create our column styles

                 this.tableLayoutPanel.ColumnStyles.Add(layout.Columns[i]);

                 for (int j = 0; j < tableLayoutPanel.RowCount; j++)

                 {

                     if (i == 0)

                     {

                         //Create our row styles

                         this.tableLayoutPanel.RowStyles.Add(layout.Rows[j]);

                     }

                     //Check if we already have a control

                     Control existingControl = tableLayoutPanel.GetControlFromPosition(i,j);

                     if (existingControl!=null)

                     {

                         //We already have a control in that cell as a results of row/col spanning

                         //Move on to next cell then

                         continue;

                     }

                     fieldCount++;

                     //Check if a client field already exists for that cell

                     if (aClient.Fields.Count <= tableLayoutPanel.Controls.Count)

                     {

                         //No client field specified, create a text field by default

                         aClient.Fields.Add(new DataField(aClient.Fields.Count));

                     }

                     //Create a control corresponding to the field specified for that cell

                     DataField field = aClient.Fields[tableLayoutPanel.Controls.Count];

                     Control control = CreateControlForDataField(field);

                     //Add newly created control to our table layout at the specified row and column

                     tableLayoutPanel.Controls.Add(control, i, j);

                     //Make sure we specify row and column span for that new control

                     tableLayoutPanel.SetRowSpan(control,field.RowSpan);

                     tableLayoutPanel.SetColumnSpan(control, field.ColumnSpan);

                 }

             }

             //

             while (aClient.Fields.Count > fieldCount)

             {

                 //We have too much fields for this layout

                 //Just discard them until we get there

                 aClient.Fields.RemoveAt(aClient.Fields.Count-1);

             }

             CheckFontHeight();

         }

         /// <summary>

         /// Check our type of data field and create corresponding control

         /// </summary>

         /// <param name="aField"></param>

         private Control CreateControlForDataField(DataField aField)

         {

             Control control=null;

             if (!aField.IsBitmap)

             {

                 MarqueeLabel label = new SharpDisplayManager.MarqueeLabel();

                 label.AutoEllipsis = true;

                 label.AutoSize = true;

                 label.BackColor = System.Drawing.Color.Transparent;

                 label.Dock = System.Windows.Forms.DockStyle.Fill;

                 label.Location = new System.Drawing.Point(1, 1);

                 label.Margin = new System.Windows.Forms.Padding(0);

                 label.Name = "marqueeLabel" + aField.Index;

                 label.OwnTimer = false;

                 label.PixelsPerSecond = cds.ScrollingSpeedInPixelsPerSecond;

                 label.Separator = cds.Separator;

                 label.MinFontSize = cds.MinFontSize;

                 label.ScaleToFit = cds.ScaleToFit;

                 //control.Size = new System.Drawing.Size(254, 30);

                 //control.TabIndex = 2;

                 label.Font = cds.Font;

 				label.TextAlign = aField.Alignment;

                 label.UseCompatibleTextRendering = true;

                 label.Text = aField.Text;

                 //

                 control = label;

             }

             else

             {

                 //Create picture box

                 PictureBox picture = new PictureBox();

                 picture.AutoSize = true;

                 picture.BackColor = System.Drawing.Color.Transparent;

                 picture.Dock = System.Windows.Forms.DockStyle.Fill;

                 picture.Location = new System.Drawing.Point(1, 1);

                 picture.Margin = new System.Windows.Forms.Padding(0);

                 picture.Name = "pictureBox" + aField;

                 //Set our image

                 picture.Image = aField.Bitmap;

                 //

                 control = picture;

             }

             return control;

         }

 		/// <summary>

 		/// Called when the user selected a new display type.

 		/// </summary>

 		/// <param name="sender"></param>

 		/// <param name="e"></param>

         private void comboBoxDisplayType_SelectedIndexChanged(object sender, EventArgs e)

         {

 			//Store the selected display type in our settings

             Properties.Settings.Default.CurrentDisplayIndex = comboBoxDisplayType.SelectedIndex;

             cds.DisplayType = comboBoxDisplayType.SelectedIndex;

             Properties.Settings.Default.Save();

 			//Try re-opening the display connection if we were already connected.

 			//Otherwise just update our status to reflect display type change.

             if (iDisplay.IsOpen())

             {

                 OpenDisplayConnection();

             }

             else

             {

                 UpdateStatus();

             }

         }

         private void maskedTextBoxTimerInterval_TextChanged(object sender, EventArgs e)

         {

             if (maskedTextBoxTimerInterval.Text != "")

             {

                 int interval = Convert.ToInt32(maskedTextBoxTimerInterval.Text);

                 if (interval > 0)

                 {

                     timer.Interval = interval;

                     cds.TimerInterval = timer.Interval;

                     Properties.Settings.Default.Save();

                 }

             }

         }

         private void maskedTextBoxMinFontSize_TextChanged(object sender, EventArgs e)

         {

             if (maskedTextBoxMinFontSize.Text != "")

             {

                 int minFontSize = Convert.ToInt32(maskedTextBoxMinFontSize.Text);

                 if (minFontSize > 0)

                 {

                     cds.MinFontSize = minFontSize;

                     Properties.Settings.Default.Save();

 					//We need to recreate our layout for that change to take effect

 					UpdateTableLayoutPanel(iCurrentClientData);

                 }

             }

         }

 		private void maskedTextBoxScrollingSpeed_TextChanged(object sender, EventArgs e)

 		{

 			if (maskedTextBoxScrollingSpeed.Text != "")

 			{

 				int scrollingSpeed = Convert.ToInt32(maskedTextBoxScrollingSpeed.Text);

 				if (scrollingSpeed > 0)

 				{

 					cds.ScrollingSpeedInPixelsPerSecond = scrollingSpeed;

 					Properties.Settings.Default.Save();

 					//We need to recreate our layout for that change to take effect

 					UpdateTableLayoutPanel(iCurrentClientData);

 				}

 			}

 		}

         private void textBoxScrollLoopSeparator_TextChanged(object sender, EventArgs e)

         {

             cds.Separator = textBoxScrollLoopSeparator.Text;

             Properties.Settings.Default.Save();

 			//Update our text fields

 			foreach (MarqueeLabel ctrl in tableLayoutPanel.Controls)

 			{

 				ctrl.Separator = cds.Separator;

 			}

         }

         private void buttonPowerOn_Click(object sender, EventArgs e)

         {

             iDisplay.PowerOn();

         }

         private void buttonPowerOff_Click(object sender, EventArgs e)

         {

             iDisplay.PowerOff();

         }

         private void buttonShowClock_Click(object sender, EventArgs e)

         {

 			ShowClock();

         }

         private void buttonHideClock_Click(object sender, EventArgs e)

         {

 			HideClock();

         }

         private void buttonUpdate_Click(object sender, EventArgs e)

         {

             InstallUpdateSyncWithInfo();

         }

 		/// <summary>

 		/// 

 		/// </summary>

 		void ShowClock()

 		{

 			if (!iDisplay.IsOpen())

 			{

 				return;

 			}

 			//Devices like MDM166AA don't support windowing and frame rendering must be stopped while showing our clock

 			iSkipFrameRendering = true;

 			//Clear our screen 

 			iDisplay.Clear();

 			iDisplay.SwapBuffers();

 			//Then show our clock

 			iDisplay.ShowClock();

 		}

 		/// <summary>

 		/// 

 		/// </summary>

 		void HideClock()

 		{

 			if (!iDisplay.IsOpen())

 			{

 				return;

 			}

 			//Devices like MDM166AA don't support windowing and frame rendering must be stopped while showing our clock

 			iSkipFrameRendering = false;

 			iDisplay.HideClock();

 		}

         private void InstallUpdateSyncWithInfo()

         {

             UpdateCheckInfo info = null;

             if (ApplicationDeployment.IsNetworkDeployed)

             {

                 ApplicationDeployment ad = ApplicationDeployment.CurrentDeployment;

                 try

                 {

                     info = ad.CheckForDetailedUpdate();

                 }

                 catch (DeploymentDownloadException dde)

                 {

                     MessageBox.Show("The new version of the application cannot be downloaded at this time. \n\nPlease check your network connection, or try again later. Error: " + dde.Message);

                     return;

                 }

                 catch (InvalidDeploymentException ide)

                 {

                     MessageBox.Show("Cannot check for a new version of the application. The ClickOnce deployment is corrupt. Please redeploy the application and try again. Error: " + ide.Message);

                     return;

                 }

                 catch (InvalidOperationException ioe)

                 {

                     MessageBox.Show("This application cannot be updated. It is likely not a ClickOnce application. Error: " + ioe.Message);

                     return;

                 }

 				if (info.UpdateAvailable)

 				{

 					Boolean doUpdate = true;

 					if (!info.IsUpdateRequired)

 					{

 						DialogResult dr = MessageBox.Show("An update is available. Would you like to update the application now?", "Update Available", MessageBoxButtons.OKCancel);

 						if (!(DialogResult.OK == dr))

 						{

 							doUpdate = false;

 						}

 					}

 					else

 					{

 						// Display a message that the app MUST reboot. Display the minimum required version.

 						MessageBox.Show("This application has detected a mandatory update from your current " +

 							"version to version " + info.MinimumRequiredVersion.ToString() +

 							". The application will now install the update and restart.",

 							"Update Available", MessageBoxButtons.OK,

 							MessageBoxIcon.Information);

 					}

 					if (doUpdate)

 					{

 						try

 						{

 							ad.Update();

 							MessageBox.Show("The application has been upgraded, and will now restart.");

 							Application.Restart();

 						}

 						catch (DeploymentDownloadException dde)

 						{

 							MessageBox.Show("Cannot install the latest version of the application. \n\nPlease check your network connection, or try again later. Error: " + dde);

 							return;

 						}

 					}

 				}

 				else

 				{

 					MessageBox.Show("You are already running the latest version.", "Application up-to-date");

 				}

             }

         }

 		/// <summary>

 		/// Used to

 		/// </summary>

 		private void SysTrayHideShow()

 		{

 			Visible = !Visible;

 			if (Visible)

 			{

 				Activate();

 				WindowState = FormWindowState.Normal;

 			}

 		}

 		/// <summary>

 		/// Use to handle minimize events.

 		/// </summary>

 		/// <param name="sender"></param>

 		/// <param name="e"></param>

 		private void MainForm_SizeChanged(object sender, EventArgs e)

 		{

 			if (WindowState == FormWindowState.Minimized && Properties.Settings.Default.MinimizeToTray)

 			{

 				if (Visible)

 				{

 					SysTrayHideShow();

 				}

 			}

 		}

 		/// <summary>

 		/// 

 		/// </summary>

 		/// <param name="sender"></param>

 		/// <param name="e"></param>

 		private void tableLayoutPanel_SizeChanged(object sender, EventArgs e)

 		{

 			//Our table layout size has changed which means our display size has changed.

 			//We need to re-create our bitmap.

 			iCreateBitmap = true;

 		}

 		/// <summary>

 		/// 

 		/// </summary>

 		/// <param name="sender"></param>

 		/// <param name="e"></param>

 		private void buttonSelectFile_Click(object sender, EventArgs e)

 		{

 			//openFileDialog1.InitialDirectory = "c:\\";

 			//openFileDialog.Filter = "EXE files (*.exe)|*.exe|All files (*.*)|*.*";

 			//openFileDialog.FilterIndex = 1;

 			openFileDialog.RestoreDirectory = true;

 			if (DlgBox.ShowDialog(openFileDialog) == DialogResult.OK)

 			{

 				labelStartFileName.Text = openFileDialog.FileName;

 				Properties.Settings.Default.StartFileName = openFileDialog.FileName;

 				Properties.Settings.Default.Save();

 			}

 		}

     }

 }