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 SharpDisplayClient;

 using SharpDisplay;

 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 SetTextDelegate(string SessionId, DataField aField);

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

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

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

     /// <summary>

     /// Our Display manager main form

     /// </summary>

     public partial class MainForm : Form

     {

         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;

         //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;

         public MainForm()

         {

             iCurrentClientSessionId = "";

             iCurrentClientData = null;

             LastTickTime = DateTime.Now;

             iDisplay = new Display();

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

             InitializeComponent();

             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;

         }

         private void MainForm_Load(object sender, EventArgs e)

         {

             StartServer();

             if (Properties.Settings.Default.DisplayConnectOnStartup)

             {

                 OpenDisplayConnection();

             }

         }

         /// <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)

         {

             if (aSessionId == iCurrentClientSessionId)

             {

                 //Given client is already the current one.

                 //Don't bother changing anything then.

                 return;

             }

             //Set current client ID.

             iCurrentClientSessionId = aSessionId;

             //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;

             MarqueeLabel label = (MarqueeLabel)tableLayoutPanel.Controls[0];

             fontDialog.Font = label.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)

             {

                 //MsgBox.Show("MessageBox MsgBox", "MsgBox caption");

                 //MessageBox.Show("Ok");

                 foreach (MarqueeLabel ctrl in tableLayoutPanel.Controls)

                 {

                     ctrl.Font = fontDialog.Font;

                 }

                 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 Display.TMiniDisplayRequest.EMiniDisplayRequestFirmwareRevision:

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

                         //Issue next request then

                         iDisplay.RequestPowerSupplyStatus();

                         break;

                     case Display.TMiniDisplayRequest.EMiniDisplayRequestPowerSupplyStatus:

                         if (iDisplay.PowerSupplyStatus())

                         {

                             toolStripStatusLabelPower.Text = "ON";

                         }

                         else

                         {

                             toolStripStatusLabelPower.Text = "OFF";

                         }

                         //Issue next request then

                         iDisplay.RequestDeviceId();

                         break;

                     case Display.TMiniDisplayRequest.EMiniDisplayRequestDeviceId:

                         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;

             //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();

                 //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;

         }

         private void OpenDisplayConnection()

         {

             CloseDisplayConnection();

             if (iDisplay.Open((Display.TMiniDisplayType)cds.DisplayType))

             {

                 UpdateStatus();

                 iDisplay.RequestFirmwareRevision();

             }

             else

             {

                 UpdateStatus();

                 toolStripStatusLabelConnect.Text = "Connection error";

             }

         }

         private void CloseDisplayConnection()

         {

             iDisplay.Close();

             UpdateStatus();

         }

         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;

         }

         private void UpdateStatus()

         {

             //Synchronize UI with settings

             //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();

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

             checkBoxReverseScreen.Checked = cds.ReverseScreen;

             checkBoxInverseColors.Checked = cds.InverseColors;

             comboBoxDisplayType.SelectedIndex = cds.DisplayType;

             timer.Interval = cds.TimerInterval;

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

             //

             SetupPixelDelegates();

             if (iDisplay.IsOpen())

             {

                 //Only setup brightness if display is open

                 trackBarBrightness.Minimum = iDisplay.MinBrightness();

                 trackBarBrightness.Maximum = iDisplay.MaxBrightness();

                 trackBarBrightness.Value = cds.Brightness;

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

                 trackBarBrightness.SmallChange = 1;

                 iDisplay.SetBrightness(cds.Brightness);

                 //

                 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;

                 }

             }

             else

             {

                 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";

             }

         }

         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 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 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)

         {

             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]);

                 }

             }

         }

         private void buttonStartClient_Click(object sender, EventArgs e)

         {

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

             clientThread.Start();

             BringToFront();

         }

         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)

         {

         }

         /// <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 (iClosing && iClients.Count == 0)

                 {

                     //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)

                 {

                     client.Layout = aLayout;

                     UpdateTableLayoutPanel(client);

                     //

                     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

                 SetTextDelegate d = new SetTextDelegate(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)

         {            

             SetCurrentClient(aSessionId);

             ClientData client = iClients[aSessionId];

             if (client != null)

             {

                 bool somethingChanged = false;

                 //Make sure all our fields are in place

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

                 {

                     //Add a text field with proper index

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

                     somethingChanged = true;

                 }

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

                 {

                     //Same layout just update our field

                     client.Fields[aField.Index] = aField;

                     //

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

                     {                        

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

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

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

                         label.Text = aField.Text;

                         label.TextAlign = aField.Alignment;

                     }

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

                     {

                         somethingChanged = 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

                     {

                         somethingChanged = true;

                         //The requested control in our layout it not of the correct type

                         //Wrong control type, re-create them all

                         UpdateTableLayoutPanel(iCurrentClientData);

                     }

                 }

                 else

                 {

                     somethingChanged = true;

                     //Different layout, need to rebuild it

                     client.Fields[aField.Index] = aField;

                     UpdateTableLayoutPanel(iCurrentClientData);

                 }

                 //

                 if (somethingChanged)

                 {

                     UpdateClientTreeViewNode(client);

                 }

             }

         }

         /// <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)

         {

             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();

             }

         }

         private void buttonAddRow_Click(object sender, EventArgs e)

         {

             if (tableLayoutPanel.RowCount < 6)

             {

                 UpdateTableLayoutPanel(tableLayoutPanel.ColumnCount, tableLayoutPanel.RowCount + 1);

             }

         }

         private void buttonRemoveRow_Click(object sender, EventArgs e)

         {

             if (tableLayoutPanel.RowCount > 1)

             {

                 UpdateTableLayoutPanel(tableLayoutPanel.ColumnCount, tableLayoutPanel.RowCount - 1);

             }

             UpdateTableLayoutRowStyles();

         }

         private void buttonAddColumn_Click(object sender, EventArgs e)

         {

             if (tableLayoutPanel.ColumnCount < 8)

             {

                 UpdateTableLayoutPanel(tableLayoutPanel.ColumnCount + 1, tableLayoutPanel.RowCount);

             }

         }

         private void buttonRemoveColumn_Click(object sender, EventArgs e)

         {

             if (tableLayoutPanel.ColumnCount > 1)

             {

                 UpdateTableLayoutPanel(tableLayoutPanel.ColumnCount - 1, tableLayoutPanel.RowCount);

             }

         }

         /// <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;

             }

         }

         /// DEPRECATED

         /// <summary>

         /// Empty and recreate our table layout with the given number of columns and rows.

         /// Sizes of rows and columns are uniform.

         /// </summary>

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

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

         private void UpdateTableLayoutPanel(int aColumn, int aRow)

         {

             tableLayoutPanel.Controls.Clear();

             tableLayoutPanel.RowStyles.Clear();

             tableLayoutPanel.ColumnStyles.Clear();

             tableLayoutPanel.RowCount = 0;

             tableLayoutPanel.ColumnCount = 0;

             while (tableLayoutPanel.RowCount < aRow)

             {

                 tableLayoutPanel.RowCount++;

             }

             while (tableLayoutPanel.ColumnCount < aColumn)

             {

                 tableLayoutPanel.ColumnCount++;

             }

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

             {

                 //Create our column styles

                 this.tableLayoutPanel.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100 / tableLayoutPanel.ColumnCount));

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

                 {

                     if (i == 0)

                     {

                         //Create our row styles

                         this.tableLayoutPanel.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100 / tableLayoutPanel.RowCount));

                     }

                     MarqueeLabel control = new SharpDisplayManager.MarqueeLabel();

                     control.AutoEllipsis = true;

                     control.AutoSize = true;

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

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

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

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

                     control.Name = "marqueeLabelCol" + aColumn + "Row" + aRow;

                     control.OwnTimer = false;

                     control.PixelsPerSecond = 64;

                     control.Separator = "|";

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

                     //control.TabIndex = 2;

                     control.Font = cds.Font;

                     control.Text = "ABCDEFGHIJKLMNOPQRST-0123456789";

                     control.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;

                     control.UseCompatibleTextRendering = true;

                     //

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

                 }

             }

             CheckFontHeight();

         }

         /// <summary>

         /// Update our display table layout.

         /// </summary>

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

         private void UpdateTableLayoutPanel(ClientData aClient)

         {

             TableLayout layout = aClient.Layout;

             int fieldCount = 0;

             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 = 64;

                 label.Separator = "|";

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

                 //control.TabIndex = 2;

                 label.Font = cds.Font;

                 label.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;

                 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;

         }

         private void buttonAlignLeft_Click(object sender, EventArgs e)

         {

             foreach (MarqueeLabel ctrl in tableLayoutPanel.Controls)

             {

                 ctrl.TextAlign = ContentAlignment.MiddleLeft;

             }

         }

         private void buttonAlignCenter_Click(object sender, EventArgs e)

         {

             foreach (MarqueeLabel ctrl in tableLayoutPanel.Controls)

             {

                 ctrl.TextAlign = ContentAlignment.MiddleCenter;

             }

         }

         private void buttonAlignRight_Click(object sender, EventArgs e)

         {

             foreach (MarqueeLabel ctrl in tableLayoutPanel.Controls)

             {

                 ctrl.TextAlign = ContentAlignment.MiddleRight;

             }

         }

         private void comboBoxDisplayType_SelectedIndexChanged(object sender, EventArgs e)

         {

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

             cds.DisplayType = comboBoxDisplayType.SelectedIndex;

             Properties.Settings.Default.Save();

             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 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)

         {

             iDisplay.ShowClock();

         }

         private void buttonHideClock_Click(object sender, EventArgs e)

         {

             iDisplay.HideClock();

         }

     }

     /// <summary>

     /// A UI thread copy of a client relevant data.

     /// Keeping this copy in the UI thread helps us deal with threading issues.

     /// </summary>

     public class ClientData

     {

         public ClientData(string aSessionId, ICallback aCallback)

         {

             SessionId = aSessionId;

             Name = "";

             Fields = new List<DataField>();

             Layout = new TableLayout(1, 2); //Default to one column and two rows

             Callback = aCallback;

         }

         public string SessionId { get; set; }

         public string Name { get; set; }

         public List<DataField> Fields { get; set; }

         public TableLayout Layout { get; set; }

         public ICallback Callback { get; set; }

     }

 }