Server/MainForm.cs
author sl
Sat, 25 Oct 2014 13:35:11 +0200
changeset 72 fd0bb39a7818
parent 70 dcd2bbb90d42
child 75 2549a8055bd1
permissions -rw-r--r--
Now having a single class for both text and bitmap field.
Thus we should soon be able to use common functions to pass in fields.
     1 using System;
     2 using System.Collections.Generic;
     3 using System.ComponentModel;
     4 using System.Data;
     5 using System.Drawing;
     6 using System.Linq;
     7 using System.Text;
     8 using System.Threading.Tasks;
     9 using System.Windows.Forms;
    10 using System.IO;
    11 using CodeProject.Dialog;
    12 using System.Drawing.Imaging;
    13 using System.ServiceModel;
    14 using System.Threading;
    15 using System.Diagnostics;
    16 //
    17 using SharpDisplayClient;
    18 using SharpDisplay;
    19 
    20 namespace SharpDisplayManager
    21 {
    22     //Types declarations
    23     public delegate uint ColorProcessingDelegate(int aX, int aY, uint aPixel);
    24     public delegate int CoordinateTranslationDelegate(System.Drawing.Bitmap aBmp, int aInt);
    25     //Delegates are used for our thread safe method
    26     public delegate void AddClientDelegate(string aSessionId, ICallback aCallback);
    27     public delegate void RemoveClientDelegate(string aSessionId);
    28     public delegate void SetTextDelegate(string SessionId, DataField aField);
    29     public delegate void SetBitmapDelegate(string SessionId, DataField aField);
    30     public delegate void SetLayoutDelegate(string SessionId, TableLayout aLayout);
    31     public delegate void SetTextsDelegate(string SessionId, System.Collections.Generic.IList<DataField> aFields);
    32     public delegate void SetClientNameDelegate(string aSessionId, string aName);
    33 
    34 
    35     /// <summary>
    36     /// Our Display manager main form
    37     /// </summary>
    38     public partial class MainForm : Form
    39     {
    40 
    41         DateTime LastTickTime;
    42         Display iDisplay;
    43         System.Drawing.Bitmap iBmp;
    44         bool iCreateBitmap; //Workaround render to bitmap issues when minimized
    45         ServiceHost iServiceHost;
    46         // Our collection of clients sorted by session id.
    47         public Dictionary<string, ClientData> iClients;
    48         // The name of the client which informations are currently displayed.
    49         public string iCurrentClientSessionId;
    50         ClientData iCurrentClientData;
    51         //
    52         public bool iClosing;
    53         //Function pointer for pixel color filtering
    54         ColorProcessingDelegate iColorFx;
    55         //Function pointer for pixel X coordinate intercept
    56         CoordinateTranslationDelegate iScreenX;
    57         //Function pointer for pixel Y coordinate intercept
    58         CoordinateTranslationDelegate iScreenY;
    59 
    60         public MainForm()
    61         {
    62             iCurrentClientSessionId = "";
    63             iCurrentClientData = null;
    64             LastTickTime = DateTime.Now;
    65             iDisplay = new Display();
    66             iClients = new Dictionary<string, ClientData>();
    67 
    68             InitializeComponent();
    69             UpdateStatus();
    70             //We have a bug when drawing minimized and reusing our bitmap
    71             iBmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height, PixelFormat.Format32bppArgb);
    72             iCreateBitmap = false;
    73         }
    74 
    75         private void MainForm_Load(object sender, EventArgs e)
    76         {
    77             StartServer();
    78 
    79             if (Properties.Settings.Default.DisplayConnectOnStartup)
    80             {
    81                 OpenDisplayConnection();
    82             }
    83         }
    84 
    85         /// <summary>
    86         /// Set our current client.
    87         /// This will take care of applying our client layout and set data fields.
    88         /// </summary>
    89         /// <param name="aSessionId"></param>
    90         void SetCurrentClient(string aSessionId)
    91         {
    92             if (aSessionId == iCurrentClientSessionId)
    93             {
    94                 //Given client is already the current one.
    95                 //Don't bother changing anything then.
    96                 return;
    97             }
    98 
    99             //Set current client ID.
   100             iCurrentClientSessionId = aSessionId;
   101             //Fetch and set current client data.
   102             iCurrentClientData = iClients[aSessionId];
   103             //Apply layout and set data fields.
   104             UpdateTableLayoutPanel(iCurrentClientData);
   105         }
   106 
   107         private void buttonFont_Click(object sender, EventArgs e)
   108         {
   109             //fontDialog.ShowColor = true;
   110             //fontDialog.ShowApply = true;
   111             fontDialog.ShowEffects = true;
   112             MarqueeLabel label = (MarqueeLabel)tableLayoutPanel.Controls[0];
   113             fontDialog.Font = label.Font;
   114 
   115             fontDialog.FixedPitchOnly = checkBoxFixedPitchFontOnly.Checked;
   116 
   117             //fontDialog.ShowHelp = true;
   118 
   119             //fontDlg.MaxSize = 40;
   120             //fontDlg.MinSize = 22;
   121 
   122             //fontDialog.Parent = this;
   123             //fontDialog.StartPosition = FormStartPosition.CenterParent;
   124 
   125             //DlgBox.ShowDialog(fontDialog);
   126 
   127             //if (fontDialog.ShowDialog(this) != DialogResult.Cancel)
   128             if (DlgBox.ShowDialog(fontDialog) != DialogResult.Cancel)
   129             {
   130 
   131                 //MsgBox.Show("MessageBox MsgBox", "MsgBox caption");
   132 
   133                 //MessageBox.Show("Ok");
   134                 foreach (MarqueeLabel ctrl in tableLayoutPanel.Controls)
   135                 {
   136                     ctrl.Font = fontDialog.Font;
   137                 }
   138                 cds.Font = fontDialog.Font;
   139                 Properties.Settings.Default.Save();
   140                 //
   141                 CheckFontHeight();
   142             }
   143         }
   144 
   145         /// <summary>
   146         ///
   147         /// </summary>
   148         void CheckFontHeight()
   149         {
   150             //Show font height and width
   151             labelFontHeight.Text = "Font height: " + cds.Font.Height;
   152             float charWidth = IsFixedWidth(cds.Font);
   153             if (charWidth == 0.0f)
   154             {
   155                 labelFontWidth.Visible = false;
   156             }
   157             else
   158             {
   159                 labelFontWidth.Visible = true;
   160                 labelFontWidth.Text = "Font width: " + charWidth;
   161             }
   162 
   163             MarqueeLabel label = null;
   164             //Get the first label control we can find
   165             foreach (Control ctrl in tableLayoutPanel.Controls)
   166             {
   167                 if (ctrl is MarqueeLabel)
   168                 {
   169                     label = (MarqueeLabel)ctrl;
   170                     break;
   171                 }
   172             }
   173 
   174             //Now check font height and show a warning if needed.
   175             if (label != null && label.Font.Height > label.Height)
   176             {
   177                 labelWarning.Text = "WARNING: Selected font is too height by " + (label.Font.Height - label.Height) + " pixels!";
   178                 labelWarning.Visible = true;
   179             }
   180             else
   181             {
   182                 labelWarning.Visible = false;
   183             }
   184 
   185         }
   186 
   187         private void buttonCapture_Click(object sender, EventArgs e)
   188         {
   189             System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height);
   190             tableLayoutPanel.DrawToBitmap(bmp, tableLayoutPanel.ClientRectangle);
   191             //Bitmap bmpToSave = new Bitmap(bmp);
   192             bmp.Save("D:\\capture.png");
   193 
   194             ((MarqueeLabel)tableLayoutPanel.Controls[0]).Text = "Captured";
   195 
   196             /*
   197             string outputFileName = "d:\\capture.png";
   198             using (MemoryStream memory = new MemoryStream())
   199             {
   200                 using (FileStream fs = new FileStream(outputFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite))
   201                 {
   202                     bmp.Save(memory, System.Drawing.Imaging.ImageFormat.Png);
   203                     byte[] bytes = memory.ToArray();
   204                     fs.Write(bytes, 0, bytes.Length);
   205                 }
   206             }
   207              */
   208 
   209         }
   210 
   211         private void CheckForRequestResults()
   212         {
   213             if (iDisplay.IsRequestPending())
   214             {
   215                 switch (iDisplay.AttemptRequestCompletion())
   216                 {
   217                     case Display.TMiniDisplayRequest.EMiniDisplayRequestFirmwareRevision:
   218                         toolStripStatusLabelConnect.Text += " v" + iDisplay.FirmwareRevision();
   219                         //Issue next request then
   220                         iDisplay.RequestPowerSupplyStatus();
   221                         break;
   222 
   223                     case Display.TMiniDisplayRequest.EMiniDisplayRequestPowerSupplyStatus:
   224                         if (iDisplay.PowerSupplyStatus())
   225                         {
   226                             toolStripStatusLabelPower.Text = "ON";
   227                         }
   228                         else
   229                         {
   230                             toolStripStatusLabelPower.Text = "OFF";
   231                         }
   232                         //Issue next request then
   233                         iDisplay.RequestDeviceId();
   234                         break;
   235 
   236                     case Display.TMiniDisplayRequest.EMiniDisplayRequestDeviceId:
   237                         toolStripStatusLabelConnect.Text += " - " + iDisplay.DeviceId();
   238                         //No more request to issue
   239                         break;
   240                 }
   241             }
   242         }
   243 
   244         public static uint ColorWhiteIsOn(int aX, int aY, uint aPixel)
   245         {
   246             if ((aPixel & 0x00FFFFFF) == 0x00FFFFFF)
   247             {
   248                 return 0xFFFFFFFF;
   249             }
   250             return 0x00000000;
   251         }
   252 
   253         public static uint ColorUntouched(int aX, int aY, uint aPixel)
   254         {
   255             return aPixel;
   256         }
   257 
   258         public static uint ColorInversed(int aX, int aY, uint aPixel)
   259         {
   260             return ~aPixel;
   261         }
   262 
   263         public static uint ColorChessboard(int aX, int aY, uint aPixel)
   264         {
   265             if ((aX % 2 == 0) && (aY % 2 == 0))
   266             {
   267                 return ~aPixel;
   268             }
   269             else if ((aX % 2 != 0) && (aY % 2 != 0))
   270             {
   271                 return ~aPixel;
   272             }
   273             return 0x00000000;
   274         }
   275 
   276 
   277         public static int ScreenReversedX(System.Drawing.Bitmap aBmp, int aX)
   278         {
   279             return aBmp.Width - aX - 1;
   280         }
   281 
   282         public int ScreenReversedY(System.Drawing.Bitmap aBmp, int aY)
   283         {
   284             return iBmp.Height - aY - 1;
   285         }
   286 
   287         public int ScreenX(System.Drawing.Bitmap aBmp, int aX)
   288         {
   289             return aX;
   290         }
   291 
   292         public int ScreenY(System.Drawing.Bitmap aBmp, int aY)
   293         {
   294             return aY;
   295         }
   296 
   297         /// <summary>
   298         /// Select proper pixel delegates according to our current settings.
   299         /// </summary>
   300         private void SetupPixelDelegates()
   301         {
   302             //Select our pixel processing routine
   303             if (cds.InverseColors)
   304             {
   305                 //iColorFx = ColorChessboard;
   306                 iColorFx = ColorInversed;
   307             }
   308             else
   309             {
   310                 iColorFx = ColorWhiteIsOn;
   311             }
   312 
   313             //Select proper coordinate translation functions
   314             //We used delegate/function pointer to support reverse screen without doing an extra test on each pixels
   315             if (cds.ReverseScreen)
   316             {
   317                 iScreenX = ScreenReversedX;
   318                 iScreenY = ScreenReversedY;
   319             }
   320             else
   321             {
   322                 iScreenX = ScreenX;
   323                 iScreenY = ScreenY;
   324             }
   325 
   326         }
   327 
   328         //This is our timer tick responsible to perform our render
   329         private void timer_Tick(object sender, EventArgs e)
   330         {
   331             //Update our animations
   332             DateTime NewTickTime = DateTime.Now;
   333 
   334             //Update animation for all our marquees
   335             foreach (Control ctrl in tableLayoutPanel.Controls)
   336             {
   337                 if (ctrl is MarqueeLabel)
   338                 {
   339                     ((MarqueeLabel)ctrl).UpdateAnimation(LastTickTime, NewTickTime);
   340                 }
   341             }
   342 
   343 
   344             //Update our display
   345             if (iDisplay.IsOpen())
   346             {
   347                 CheckForRequestResults();
   348 
   349                 //Draw to bitmap
   350                 if (iCreateBitmap)
   351                 {
   352                     iBmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height, PixelFormat.Format32bppArgb);
   353                 }
   354                 tableLayoutPanel.DrawToBitmap(iBmp, tableLayoutPanel.ClientRectangle);
   355                 //iBmp.Save("D:\\capture.png");
   356 
   357                 //Send it to our display
   358                 for (int i = 0; i < iBmp.Width; i++)
   359                 {
   360                     for (int j = 0; j < iBmp.Height; j++)
   361                     {
   362                         unchecked
   363                         {
   364                             //Get our processed pixel coordinates
   365                             int x = iScreenX(iBmp, i);
   366                             int y = iScreenY(iBmp, j);
   367                             //Get pixel color
   368                             uint color = (uint)iBmp.GetPixel(i, j).ToArgb();
   369                             //Apply color effects
   370                             color = iColorFx(x,y,color);
   371                             //Now set our pixel
   372                             iDisplay.SetPixel(x, y, color);
   373                         }
   374                     }
   375                 }
   376 
   377                 iDisplay.SwapBuffers();
   378 
   379             }
   380 
   381             //Compute instant FPS
   382             toolStripStatusLabelFps.Text = (1.0/NewTickTime.Subtract(LastTickTime).TotalSeconds).ToString("F0") + " / " + (1000/timer.Interval).ToString() + " FPS";
   383 
   384             LastTickTime = NewTickTime;
   385 
   386         }
   387 
   388         private void OpenDisplayConnection()
   389         {
   390             CloseDisplayConnection();
   391 
   392             if (iDisplay.Open((Display.TMiniDisplayType)cds.DisplayType))
   393             {
   394                 UpdateStatus();
   395                 iDisplay.RequestFirmwareRevision();
   396             }
   397             else
   398             {
   399                 UpdateStatus();
   400                 toolStripStatusLabelConnect.Text = "Connection error";
   401             }
   402         }
   403 
   404         private void CloseDisplayConnection()
   405         {
   406             iDisplay.Close();
   407             UpdateStatus();
   408         }
   409 
   410         private void buttonOpen_Click(object sender, EventArgs e)
   411         {
   412             OpenDisplayConnection();
   413         }
   414 
   415         private void buttonClose_Click(object sender, EventArgs e)
   416         {
   417             CloseDisplayConnection();
   418         }
   419 
   420         private void buttonClear_Click(object sender, EventArgs e)
   421         {
   422             iDisplay.Clear();
   423             iDisplay.SwapBuffers();
   424         }
   425 
   426         private void buttonFill_Click(object sender, EventArgs e)
   427         {
   428             iDisplay.Fill();
   429             iDisplay.SwapBuffers();
   430         }
   431 
   432         private void trackBarBrightness_Scroll(object sender, EventArgs e)
   433         {
   434             cds.Brightness = trackBarBrightness.Value;
   435             Properties.Settings.Default.Save();
   436             iDisplay.SetBrightness(trackBarBrightness.Value);
   437 
   438         }
   439 
   440 
   441         /// <summary>
   442         /// CDS stands for Current Display Settings
   443         /// </summary>
   444         private DisplaySettings cds
   445         {
   446             get
   447             {
   448                 DisplaysSettings settings = Properties.Settings.Default.DisplaysSettings;
   449                 if (settings == null)
   450                 {
   451                     settings = new DisplaysSettings();
   452                     settings.Init();
   453                     Properties.Settings.Default.DisplaysSettings = settings;
   454                 }
   455 
   456                 //Make sure all our settings have been created
   457                 while (settings.Displays.Count <= Properties.Settings.Default.CurrentDisplayIndex)
   458                 {
   459                     settings.Displays.Add(new DisplaySettings());
   460                 }
   461 
   462                 DisplaySettings displaySettings = settings.Displays[Properties.Settings.Default.CurrentDisplayIndex];
   463                 return displaySettings;
   464             }
   465         }
   466 
   467         /// <summary>
   468         /// Check if the given font has a fixed character pitch.
   469         /// </summary>
   470         /// <param name="ft"></param>
   471         /// <returns>0.0f if this is not a monospace font, otherwise returns the character width.</returns>
   472         public float IsFixedWidth(Font ft)
   473         {
   474             Graphics g = CreateGraphics();
   475             char[] charSizes = new char[] { 'i', 'a', 'Z', '%', '#', 'a', 'B', 'l', 'm', ',', '.' };
   476             float charWidth = g.MeasureString("I", ft, Int32.MaxValue, StringFormat.GenericTypographic).Width;
   477 
   478             bool fixedWidth = true;
   479 
   480             foreach (char c in charSizes)
   481                 if (g.MeasureString(c.ToString(), ft, Int32.MaxValue, StringFormat.GenericTypographic).Width != charWidth)
   482                     fixedWidth = false;
   483 
   484             if (fixedWidth)
   485             {
   486                 return charWidth;
   487             }
   488 
   489             return 0.0f;
   490         }
   491 
   492         private void UpdateStatus()
   493         {
   494             //Synchronize UI with settings
   495             //Load settings
   496             checkBoxShowBorders.Checked = cds.ShowBorders;
   497             tableLayoutPanel.CellBorderStyle = (cds.ShowBorders ? TableLayoutPanelCellBorderStyle.Single : TableLayoutPanelCellBorderStyle.None);
   498 
   499             //Set the proper font to each of our labels
   500             foreach (MarqueeLabel ctrl in tableLayoutPanel.Controls)
   501             {
   502                 ctrl.Font = cds.Font;
   503             }
   504 
   505             CheckFontHeight();
   506             checkBoxConnectOnStartup.Checked = Properties.Settings.Default.DisplayConnectOnStartup;
   507             checkBoxReverseScreen.Checked = cds.ReverseScreen;
   508             checkBoxInverseColors.Checked = cds.InverseColors;
   509             comboBoxDisplayType.SelectedIndex = cds.DisplayType;
   510             timer.Interval = cds.TimerInterval;
   511             maskedTextBoxTimerInterval.Text = cds.TimerInterval.ToString();
   512             //
   513             SetupPixelDelegates();
   514 
   515             if (iDisplay.IsOpen())
   516             {
   517                 //Only setup brightness if display is open
   518                 trackBarBrightness.Minimum = iDisplay.MinBrightness();
   519                 trackBarBrightness.Maximum = iDisplay.MaxBrightness();
   520                 trackBarBrightness.Value = cds.Brightness;
   521                 trackBarBrightness.LargeChange = Math.Max(1, (iDisplay.MaxBrightness() - iDisplay.MinBrightness()) / 5);
   522                 trackBarBrightness.SmallChange = 1;
   523                 iDisplay.SetBrightness(cds.Brightness);
   524                 //
   525                 buttonFill.Enabled = true;
   526                 buttonClear.Enabled = true;
   527                 buttonOpen.Enabled = false;
   528                 buttonClose.Enabled = true;
   529                 trackBarBrightness.Enabled = true;
   530                 toolStripStatusLabelConnect.Text = "Connected - " + iDisplay.Vendor() + " - " + iDisplay.Product();
   531                 //+ " - " + iDisplay.SerialNumber();
   532 
   533                 if (iDisplay.SupportPowerOnOff())
   534                 {
   535                     buttonPowerOn.Enabled = true;
   536                     buttonPowerOff.Enabled = true;
   537                 }
   538                 else
   539                 {
   540                     buttonPowerOn.Enabled = false;
   541                     buttonPowerOff.Enabled = false;
   542                 }
   543 
   544                 if (iDisplay.SupportClock())
   545                 {
   546                     buttonShowClock.Enabled = true;
   547                     buttonHideClock.Enabled = true;
   548                 }
   549                 else
   550                 {
   551                     buttonShowClock.Enabled = false;
   552                     buttonHideClock.Enabled = false;
   553                 }
   554             }
   555             else
   556             {
   557                 buttonFill.Enabled = false;
   558                 buttonClear.Enabled = false;
   559                 buttonOpen.Enabled = true;
   560                 buttonClose.Enabled = false;
   561                 trackBarBrightness.Enabled = false;
   562                 buttonPowerOn.Enabled = false;
   563                 buttonPowerOff.Enabled = false;
   564                 buttonShowClock.Enabled = false;
   565                 buttonHideClock.Enabled = false;
   566                 toolStripStatusLabelConnect.Text = "Disconnected";
   567                 toolStripStatusLabelPower.Text = "N/A";
   568             }
   569         }
   570 
   571 
   572 
   573         private void checkBoxShowBorders_CheckedChanged(object sender, EventArgs e)
   574         {
   575             //Save our show borders setting
   576             tableLayoutPanel.CellBorderStyle = (checkBoxShowBorders.Checked ? TableLayoutPanelCellBorderStyle.Single : TableLayoutPanelCellBorderStyle.None);
   577             cds.ShowBorders = checkBoxShowBorders.Checked;
   578             Properties.Settings.Default.Save();
   579             CheckFontHeight();
   580         }
   581 
   582         private void checkBoxConnectOnStartup_CheckedChanged(object sender, EventArgs e)
   583         {
   584             //Save our connect on startup setting
   585             Properties.Settings.Default.DisplayConnectOnStartup = checkBoxConnectOnStartup.Checked;
   586             Properties.Settings.Default.Save();
   587         }
   588 
   589         private void checkBoxReverseScreen_CheckedChanged(object sender, EventArgs e)
   590         {
   591             //Save our reverse screen setting
   592             cds.ReverseScreen = checkBoxReverseScreen.Checked;
   593             Properties.Settings.Default.Save();
   594             SetupPixelDelegates();
   595         }
   596 
   597         private void checkBoxInverseColors_CheckedChanged(object sender, EventArgs e)
   598         {
   599             //Save our inverse colors setting
   600             cds.InverseColors = checkBoxInverseColors.Checked;
   601             Properties.Settings.Default.Save();
   602             SetupPixelDelegates();
   603         }
   604 
   605         private void MainForm_Resize(object sender, EventArgs e)
   606         {
   607             if (WindowState == FormWindowState.Minimized)
   608             {
   609                 // Do some stuff
   610                 //iBmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height, PixelFormat.Format32bppArgb);
   611                 iCreateBitmap = true;
   612             }
   613         }
   614 
   615         private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
   616         {
   617             StopServer();
   618             e.Cancel = iClosing;
   619         }
   620 
   621         public void StartServer()
   622         {
   623             iServiceHost = new ServiceHost
   624                 (
   625                     typeof(Session),
   626                     new Uri[] { new Uri("net.tcp://localhost:8001/") }
   627                 );
   628 
   629             iServiceHost.AddServiceEndpoint(typeof(IService), new NetTcpBinding(SecurityMode.None, true), "DisplayService");
   630             iServiceHost.Open();
   631         }
   632 
   633         public void StopServer()
   634         {
   635             if (iClients.Count > 0 && !iClosing)
   636             {
   637                 //Tell our clients
   638                 iClosing = true;
   639                 BroadcastCloseEvent();
   640             }
   641             else if (iClosing)
   642             {
   643                 if (MessageBox.Show("Force exit?", "Waiting for clients...", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes)
   644                 {
   645                     iClosing = false; //We make sure we force close if asked twice
   646                 }
   647             }
   648             else
   649             {
   650                 //We removed that as it often lags for some reason
   651                 //iServiceHost.Close();
   652             }
   653         }
   654 
   655         public void BroadcastCloseEvent()
   656         {
   657             Trace.TraceInformation("BroadcastCloseEvent - start");
   658 
   659             var inactiveClients = new List<string>();
   660             foreach (var client in iClients)
   661             {
   662                 //if (client.Key != eventData.ClientName)
   663                 {
   664                     try
   665                     {
   666                         Trace.TraceInformation("BroadcastCloseEvent - " + client.Key);
   667                         client.Value.Callback.OnCloseOrder(/*eventData*/);
   668                     }
   669                     catch (Exception ex)
   670                     {
   671                         inactiveClients.Add(client.Key);
   672                     }
   673                 }
   674             }
   675 
   676             if (inactiveClients.Count > 0)
   677             {
   678                 foreach (var client in inactiveClients)
   679                 {
   680                     iClients.Remove(client);
   681                     Program.iMainForm.treeViewClients.Nodes.Remove(Program.iMainForm.treeViewClients.Nodes.Find(client, false)[0]);
   682                 }
   683             }
   684         }
   685 
   686         private void buttonStartClient_Click(object sender, EventArgs e)
   687         {
   688             Thread clientThread = new Thread(SharpDisplayClient.Program.Main);
   689             clientThread.Start();
   690             BringToFront();
   691         }
   692 
   693         private void buttonSuspend_Click(object sender, EventArgs e)
   694         {
   695             LastTickTime = DateTime.Now; //Reset timer to prevent jump
   696             timer.Enabled = !timer.Enabled;
   697             if (!timer.Enabled)
   698             {
   699                 buttonSuspend.Text = "Run";
   700             }
   701             else
   702             {
   703                 buttonSuspend.Text = "Pause";
   704             }
   705         }
   706 
   707         private void buttonCloseClients_Click(object sender, EventArgs e)
   708         {
   709             BroadcastCloseEvent();
   710         }
   711 
   712         private void treeViewClients_AfterSelect(object sender, TreeViewEventArgs e)
   713         {
   714 
   715         }
   716 
   717 
   718         /// <summary>
   719         ///
   720         /// </summary>
   721         /// <param name="aSessionId"></param>
   722         /// <param name="aCallback"></param>
   723         public void AddClientThreadSafe(string aSessionId, ICallback aCallback)
   724         {
   725             if (this.InvokeRequired)
   726             {
   727                 //Not in the proper thread, invoke ourselves
   728                 AddClientDelegate d = new AddClientDelegate(AddClientThreadSafe);
   729                 this.Invoke(d, new object[] { aSessionId, aCallback });
   730             }
   731             else
   732             {
   733                 //We are in the proper thread
   734                 //Add this session to our collection of clients
   735                 ClientData newClient = new ClientData(aSessionId, aCallback);
   736                 Program.iMainForm.iClients.Add(aSessionId, newClient);
   737                 //Add this session to our UI
   738                 UpdateClientTreeViewNode(newClient);
   739             }
   740         }
   741 
   742         /// <summary>
   743         ///
   744         /// </summary>
   745         /// <param name="aSessionId"></param>
   746         public void RemoveClientThreadSafe(string aSessionId)
   747         {
   748             if (this.InvokeRequired)
   749             {
   750                 //Not in the proper thread, invoke ourselves
   751                 RemoveClientDelegate d = new RemoveClientDelegate(RemoveClientThreadSafe);
   752                 this.Invoke(d, new object[] { aSessionId });
   753             }
   754             else
   755             {
   756                 //We are in the proper thread
   757                 //Remove this session from both client collection and UI tree view
   758                 if (Program.iMainForm.iClients.Keys.Contains(aSessionId))
   759                 {
   760                     Program.iMainForm.iClients.Remove(aSessionId);
   761                     Program.iMainForm.treeViewClients.Nodes.Remove(Program.iMainForm.treeViewClients.Nodes.Find(aSessionId, false)[0]);
   762                 }
   763 
   764                 if (iClosing && iClients.Count == 0)
   765                 {
   766                     //We were closing our form
   767                     //All clients are now closed
   768                     //Just resume our close operation
   769                     iClosing = false;
   770                     Close();
   771                 }
   772             }
   773         }
   774 
   775         /// <summary>
   776         ///
   777         /// </summary>
   778         /// <param name="aSessionId"></param>
   779         /// <param name="aLayout"></param>
   780         public void SetClientLayoutThreadSafe(string aSessionId, TableLayout aLayout)
   781         {
   782             if (this.InvokeRequired)
   783             {
   784                 //Not in the proper thread, invoke ourselves
   785                 SetLayoutDelegate d = new SetLayoutDelegate(SetClientLayoutThreadSafe);
   786                 this.Invoke(d, new object[] { aSessionId, aLayout });
   787             }
   788             else
   789             {
   790                 ClientData client = iClients[aSessionId];
   791                 if (client != null)
   792                 {
   793                     client.Layout = aLayout;
   794                     UpdateTableLayoutPanel(client);
   795                     //
   796                     UpdateClientTreeViewNode(client);
   797                 }
   798             }
   799         }
   800 
   801         /// <summary>
   802         ///
   803         /// </summary>
   804         /// <param name="aSessionId"></param>
   805         /// <param name="aField"></param>
   806         public void SetClientTextThreadSafe(string aSessionId, DataField aField)
   807         {
   808             if (this.InvokeRequired)
   809             {
   810                 //Not in the proper thread, invoke ourselves
   811                 SetTextDelegate d = new SetTextDelegate(SetClientTextThreadSafe);
   812                 this.Invoke(d, new object[] { aSessionId, aField });
   813             }
   814             else
   815             {
   816                 SetCurrentClient(aSessionId);
   817                 ClientData client = iClients[aSessionId];
   818                 if (client != null)
   819                 {
   820                     //Make sure all our texts are in place
   821                     while (client.Fields.Count < (aField.Index + 1))
   822                     {
   823                         //Add a text field with proper index
   824                         client.Fields.Add(new DataField(client.Fields.Count));
   825                     }
   826                     client.Fields[aField.Index] = aField;
   827 
   828                     //We are in the proper thread
   829                     if (tableLayoutPanel.Controls[aField.Index] is MarqueeLabel)
   830                     {
   831                         MarqueeLabel label = (MarqueeLabel)tableLayoutPanel.Controls[aField.Index];
   832                         label.Text = aField.Text;
   833                         label.TextAlign = aField.Alignment;
   834                     }
   835                     else
   836                     {
   837                         //Wrong control type, re-create them all
   838                         UpdateTableLayoutPanel(iCurrentClientData);
   839                     }
   840                     //
   841                     UpdateClientTreeViewNode(client);
   842                 }
   843             }
   844         }
   845 
   846         /// <summary>
   847         ///
   848         /// </summary>
   849         /// <param name="aTexts"></param>
   850         public void SetClientTextsThreadSafe(string aSessionId, System.Collections.Generic.IList<DataField> aFields)
   851         {
   852             if (this.InvokeRequired)
   853             {
   854                 //Not in the proper thread, invoke ourselves
   855                 SetTextsDelegate d = new SetTextsDelegate(SetClientTextsThreadSafe);
   856                 this.Invoke(d, new object[] { aSessionId, aFields });
   857             }
   858             else
   859             {
   860                 SetCurrentClient(aSessionId);
   861                 //We are in the proper thread
   862                 ClientData client = iClients[aSessionId];
   863                 if (client != null)
   864                 {
   865                     //Populate our client with the given text fields
   866                     foreach (DataField field in aFields)
   867                     {
   868                         //Make sure all our texts are in place
   869                         while (client.Fields.Count < (field.Index + 1))
   870                         {
   871                             //Add a text field with proper index
   872                             client.Fields.Add(new DataField(client.Fields.Count));
   873                         }
   874                         client.Fields[field.Index] = field;
   875                     }
   876                     //Put each our text fields in a label control
   877                     foreach (DataField field in aFields)
   878                     {
   879                         if (tableLayoutPanel.Controls[field.Index] is MarqueeLabel)
   880                         {
   881                             //Proper control type just update the text
   882                             MarqueeLabel label = (MarqueeLabel)tableLayoutPanel.Controls[field.Index];
   883                             label.Text = field.Text;
   884                             label.TextAlign = field.Alignment;
   885                         }
   886                         else
   887                         {
   888                             //Wrong control for the given field
   889                             //Update our layout thus re-creating our controls
   890                             UpdateTableLayoutPanel(iCurrentClientData);
   891                             break; //No need to keep on looping layout update will take care of everything
   892                         }
   893                     }
   894 
   895                     UpdateClientTreeViewNode(client);
   896                 }
   897             }
   898         }
   899 
   900         /// <summary>
   901         ///
   902         /// </summary>
   903         /// <param name="aSessionId"></param>
   904         /// <param name="aTextField"></param>
   905         public void SetClientBitmapThreadSafe(string aSessionId, DataField aField)
   906         {
   907             if (this.InvokeRequired)
   908             {
   909                 //Not in the proper thread, invoke ourselves
   910                 SetBitmapDelegate d = new SetBitmapDelegate(SetClientBitmapThreadSafe);
   911                 this.Invoke(d, new object[] { aSessionId, aField });
   912             }
   913             else
   914             {
   915                 SetCurrentClient(aSessionId);
   916                 ClientData client = iClients[aSessionId];
   917                 if (client != null)
   918                 {
   919                     //Make sure all our texts are in place
   920                     while (client.Fields.Count < (aField.Index + 1))
   921                     {
   922                         //Add a text field with proper index
   923                         client.Fields.Add(new DataField(client.Fields.Count));
   924                     }
   925 
   926                     client.Fields[aField.Index] = aField;
   927 
   928                     //We are in the proper thread
   929                     if (tableLayoutPanel.Controls[aField.Index] is PictureBox)
   930                     {
   931                         PictureBox pictureBox = (PictureBox)tableLayoutPanel.Controls[aField.Index];
   932                         pictureBox.Image = aField.Bitmap;
   933                     }
   934                     else
   935                     {
   936                         //Wrong control type re-create them all
   937                         UpdateTableLayoutPanel(iCurrentClientData);
   938                     }
   939                     //
   940                     UpdateClientTreeViewNode(client);
   941                 }
   942             }
   943         }
   944 
   945 
   946 
   947         /// <summary>
   948         ///
   949         /// </summary>
   950         /// <param name="aSessionId"></param>
   951         /// <param name="aName"></param>
   952         public void SetClientNameThreadSafe(string aSessionId, string aName)
   953         {
   954             if (this.InvokeRequired)
   955             {
   956                 //Not in the proper thread, invoke ourselves
   957                 SetClientNameDelegate d = new SetClientNameDelegate(SetClientNameThreadSafe);
   958                 this.Invoke(d, new object[] { aSessionId, aName });
   959             }
   960             else
   961             {
   962                 //We are in the proper thread
   963                 //Get our client
   964                 ClientData client = iClients[aSessionId];
   965                 if (client != null)
   966                 {
   967                     //Set its name
   968                     client.Name = aName;
   969                     //Update our tree-view
   970                     UpdateClientTreeViewNode(client);
   971                 }
   972             }
   973         }
   974 
   975         /// <summary>
   976         ///
   977         /// </summary>
   978         /// <param name="aClient"></param>
   979         private void UpdateClientTreeViewNode(ClientData aClient)
   980         {
   981             if (aClient == null)
   982             {
   983                 return;
   984             }
   985 
   986             TreeNode node = null;
   987             //Check that our client node already exists
   988             //Get our client root node using its key which is our session ID
   989             TreeNode[] nodes = treeViewClients.Nodes.Find(aClient.SessionId, false);
   990             if (nodes.Count()>0)
   991             {
   992                 //We already have a node for that client
   993                 node = nodes[0];
   994                 //Clear children as we are going to recreate them below
   995                 node.Nodes.Clear();
   996             }
   997             else
   998             {
   999                 //Client node does not exists create a new one
  1000                 treeViewClients.Nodes.Add(aClient.SessionId, aClient.SessionId);
  1001                 node = treeViewClients.Nodes.Find(aClient.SessionId, false)[0];
  1002             }
  1003 
  1004             if (node != null)
  1005             {
  1006                 //Change its name
  1007                 if (aClient.Name != "")
  1008                 {
  1009                     //We have a name, us it as text for our root node
  1010                     node.Text = aClient.Name;
  1011                     //Add a child with SessionId
  1012                     node.Nodes.Add(new TreeNode(aClient.SessionId));
  1013                 }
  1014                 else
  1015                 {
  1016                     //No name, use session ID instead
  1017                     node.Text = aClient.SessionId;
  1018                 }
  1019 
  1020                 if (aClient.Fields.Count > 0)
  1021                 {
  1022                     //Create root node for our texts
  1023                     TreeNode textsRoot = new TreeNode("Fields");
  1024                     node.Nodes.Add(textsRoot);
  1025                     //For each text add a new entry
  1026                     foreach (DataField field in aClient.Fields)
  1027                     {
  1028                         if (!field.HasBitmap)
  1029                         {
  1030                             DataField textField = (DataField)field;
  1031                             textsRoot.Nodes.Add(new TreeNode("[Text]" + textField.Text));
  1032                         }
  1033                         else
  1034                         {
  1035                             textsRoot.Nodes.Add(new TreeNode("[Bitmap]"));
  1036                         }
  1037                     }
  1038                 }
  1039 
  1040                 node.ExpandAll();
  1041             }
  1042         }
  1043 
  1044         private void buttonAddRow_Click(object sender, EventArgs e)
  1045         {
  1046             if (tableLayoutPanel.RowCount < 6)
  1047             {
  1048                 UpdateTableLayoutPanel(tableLayoutPanel.ColumnCount, tableLayoutPanel.RowCount + 1);
  1049             }
  1050         }
  1051 
  1052         private void buttonRemoveRow_Click(object sender, EventArgs e)
  1053         {
  1054             if (tableLayoutPanel.RowCount > 1)
  1055             {
  1056                 UpdateTableLayoutPanel(tableLayoutPanel.ColumnCount, tableLayoutPanel.RowCount - 1);
  1057             }
  1058 
  1059             UpdateTableLayoutRowStyles();
  1060         }
  1061 
  1062         private void buttonAddColumn_Click(object sender, EventArgs e)
  1063         {
  1064             if (tableLayoutPanel.ColumnCount < 8)
  1065             {
  1066                 UpdateTableLayoutPanel(tableLayoutPanel.ColumnCount + 1, tableLayoutPanel.RowCount);
  1067             }
  1068         }
  1069 
  1070         private void buttonRemoveColumn_Click(object sender, EventArgs e)
  1071         {
  1072             if (tableLayoutPanel.ColumnCount > 1)
  1073             {
  1074                 UpdateTableLayoutPanel(tableLayoutPanel.ColumnCount - 1, tableLayoutPanel.RowCount);
  1075             }
  1076         }
  1077 
  1078 
  1079         /// <summary>
  1080         /// Update our table layout row styles to make sure each rows have similar height
  1081         /// </summary>
  1082         private void UpdateTableLayoutRowStyles()
  1083         {
  1084             foreach (RowStyle rowStyle in tableLayoutPanel.RowStyles)
  1085             {
  1086                 rowStyle.SizeType = SizeType.Percent;
  1087                 rowStyle.Height = 100 / tableLayoutPanel.RowCount;
  1088             }
  1089         }
  1090 
  1091         /// DEPRECATED
  1092         /// <summary>
  1093         /// Empty and recreate our table layout with the given number of columns and rows.
  1094         /// Sizes of rows and columns are uniform.
  1095         /// </summary>
  1096         /// <param name="aColumn"></param>
  1097         /// <param name="aRow"></param>
  1098         private void UpdateTableLayoutPanel(int aColumn, int aRow)
  1099         {
  1100             tableLayoutPanel.Controls.Clear();
  1101             tableLayoutPanel.RowStyles.Clear();
  1102             tableLayoutPanel.ColumnStyles.Clear();
  1103             tableLayoutPanel.RowCount = 0;
  1104             tableLayoutPanel.ColumnCount = 0;
  1105 
  1106             while (tableLayoutPanel.RowCount < aRow)
  1107             {
  1108                 tableLayoutPanel.RowCount++;
  1109             }
  1110 
  1111             while (tableLayoutPanel.ColumnCount < aColumn)
  1112             {
  1113                 tableLayoutPanel.ColumnCount++;
  1114             }
  1115 
  1116             for (int i = 0; i < tableLayoutPanel.ColumnCount; i++)
  1117             {
  1118                 //Create our column styles
  1119                 this.tableLayoutPanel.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100 / tableLayoutPanel.ColumnCount));
  1120 
  1121                 for (int j = 0; j < tableLayoutPanel.RowCount; j++)
  1122                 {
  1123                     if (i == 0)
  1124                     {
  1125                         //Create our row styles
  1126                         this.tableLayoutPanel.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100 / tableLayoutPanel.RowCount));
  1127                     }
  1128 
  1129                     MarqueeLabel control = new SharpDisplayManager.MarqueeLabel();
  1130                     control.AutoEllipsis = true;
  1131                     control.AutoSize = true;
  1132                     control.BackColor = System.Drawing.Color.Transparent;
  1133                     control.Dock = System.Windows.Forms.DockStyle.Fill;
  1134                     control.Location = new System.Drawing.Point(1, 1);
  1135                     control.Margin = new System.Windows.Forms.Padding(0);
  1136                     control.Name = "marqueeLabelCol" + aColumn + "Row" + aRow;
  1137                     control.OwnTimer = false;
  1138                     control.PixelsPerSecond = 64;
  1139                     control.Separator = "|";
  1140                     //control.Size = new System.Drawing.Size(254, 30);
  1141                     //control.TabIndex = 2;
  1142                     control.Font = cds.Font;
  1143                     control.Text = "ABCDEFGHIJKLMNOPQRST-0123456789";
  1144                     control.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
  1145                     control.UseCompatibleTextRendering = true;
  1146                     //
  1147                     tableLayoutPanel.Controls.Add(control, i, j);
  1148                 }
  1149             }
  1150 
  1151             CheckFontHeight();
  1152         }
  1153 
  1154 
  1155         /// <summary>
  1156         /// Update our display table layout.
  1157         /// </summary>
  1158         /// <param name="aLayout"></param>
  1159         private void UpdateTableLayoutPanel(ClientData aClient)
  1160         {
  1161             TableLayout layout = aClient.Layout;
  1162             int fieldCount = 0;
  1163 
  1164             tableLayoutPanel.Controls.Clear();
  1165             tableLayoutPanel.RowStyles.Clear();
  1166             tableLayoutPanel.ColumnStyles.Clear();
  1167             tableLayoutPanel.RowCount = 0;
  1168             tableLayoutPanel.ColumnCount = 0;
  1169 
  1170             while (tableLayoutPanel.RowCount < layout.Rows.Count)
  1171             {
  1172                 tableLayoutPanel.RowCount++;
  1173             }
  1174 
  1175             while (tableLayoutPanel.ColumnCount < layout.Columns.Count)
  1176             {
  1177                 tableLayoutPanel.ColumnCount++;
  1178             }
  1179 
  1180             for (int i = 0; i < tableLayoutPanel.ColumnCount; i++)
  1181             {
  1182                 //Create our column styles
  1183                 this.tableLayoutPanel.ColumnStyles.Add(layout.Columns[i]);
  1184 
  1185                 for (int j = 0; j < tableLayoutPanel.RowCount; j++)
  1186                 {
  1187                     if (i == 0)
  1188                     {
  1189                         //Create our row styles
  1190                         this.tableLayoutPanel.RowStyles.Add(layout.Rows[j]);
  1191                     }
  1192 
  1193                     //Check if we already have a control
  1194                     Control existingControl = tableLayoutPanel.GetControlFromPosition(i,j);
  1195                     if (existingControl!=null)
  1196                     {
  1197                         //We already have a control in that cell as a results of row/col spanning
  1198                         //Move on to next cell then
  1199                         continue;
  1200                     }
  1201 
  1202                     fieldCount++;
  1203 
  1204                     //Check if a client field already exists for that cell
  1205                     if (aClient.Fields.Count <= tableLayoutPanel.Controls.Count)
  1206                     {
  1207                         //No client field specified, create a text field by default
  1208                         aClient.Fields.Add(new DataField(aClient.Fields.Count));
  1209                     }
  1210 
  1211                     //Create a control corresponding to the field specified for that cell
  1212                     DataField field = aClient.Fields[tableLayoutPanel.Controls.Count];
  1213                     Control control = CreateControlForDataField(field);
  1214 
  1215                     //Add newly created control to our table layout at the specified row and column
  1216                     tableLayoutPanel.Controls.Add(control, i, j);
  1217                     //Make sure we specify row and column span for that new control
  1218                     tableLayoutPanel.SetRowSpan(control,field.RowSpan);
  1219                     tableLayoutPanel.SetColumnSpan(control, field.ColumnSpan);
  1220                 }
  1221             }
  1222 
  1223             //
  1224             while (aClient.Fields.Count > fieldCount)
  1225             {
  1226                 //We have too much fields for this layout
  1227                 //Just discard them until we get there
  1228                 aClient.Fields.RemoveAt(aClient.Fields.Count-1);
  1229             }
  1230 
  1231             CheckFontHeight();
  1232         }
  1233 
  1234         /// <summary>
  1235         /// Check our type of data field and create corresponding control
  1236         /// </summary>
  1237         /// <param name="aField"></param>
  1238         private Control CreateControlForDataField(DataField aField)
  1239         {
  1240             Control control=null;
  1241             if (!aField.HasBitmap)
  1242             {
  1243                 MarqueeLabel label = new SharpDisplayManager.MarqueeLabel();
  1244                 label.AutoEllipsis = true;
  1245                 label.AutoSize = true;
  1246                 label.BackColor = System.Drawing.Color.Transparent;
  1247                 label.Dock = System.Windows.Forms.DockStyle.Fill;
  1248                 label.Location = new System.Drawing.Point(1, 1);
  1249                 label.Margin = new System.Windows.Forms.Padding(0);
  1250                 label.Name = "marqueeLabel" + aField.Index;
  1251                 label.OwnTimer = false;
  1252                 label.PixelsPerSecond = 64;
  1253                 label.Separator = "|";
  1254                 //control.Size = new System.Drawing.Size(254, 30);
  1255                 //control.TabIndex = 2;
  1256                 label.Font = cds.Font;
  1257 
  1258                 label.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
  1259                 label.UseCompatibleTextRendering = true;
  1260                 label.Text = aField.Text;
  1261                 //
  1262                 control = label;
  1263             }
  1264             else
  1265             {
  1266                 //Create picture box
  1267                 PictureBox picture = new PictureBox();
  1268                 picture.AutoSize = true;
  1269                 picture.BackColor = System.Drawing.Color.Transparent;
  1270                 picture.Dock = System.Windows.Forms.DockStyle.Fill;
  1271                 picture.Location = new System.Drawing.Point(1, 1);
  1272                 picture.Margin = new System.Windows.Forms.Padding(0);
  1273                 picture.Name = "pictureBox" + aField;
  1274                 //Set our image
  1275                 picture.Image = aField.Bitmap;
  1276                 //
  1277                 control = picture;
  1278             }
  1279 
  1280             return control;
  1281         }
  1282 
  1283 
  1284         private void buttonAlignLeft_Click(object sender, EventArgs e)
  1285         {
  1286             foreach (MarqueeLabel ctrl in tableLayoutPanel.Controls)
  1287             {
  1288                 ctrl.TextAlign = ContentAlignment.MiddleLeft;
  1289             }
  1290         }
  1291 
  1292         private void buttonAlignCenter_Click(object sender, EventArgs e)
  1293         {
  1294             foreach (MarqueeLabel ctrl in tableLayoutPanel.Controls)
  1295             {
  1296                 ctrl.TextAlign = ContentAlignment.MiddleCenter;
  1297             }
  1298         }
  1299 
  1300         private void buttonAlignRight_Click(object sender, EventArgs e)
  1301         {
  1302             foreach (MarqueeLabel ctrl in tableLayoutPanel.Controls)
  1303             {
  1304                 ctrl.TextAlign = ContentAlignment.MiddleRight;
  1305             }
  1306         }
  1307 
  1308         private void comboBoxDisplayType_SelectedIndexChanged(object sender, EventArgs e)
  1309         {
  1310             Properties.Settings.Default.CurrentDisplayIndex = comboBoxDisplayType.SelectedIndex;
  1311             cds.DisplayType = comboBoxDisplayType.SelectedIndex;
  1312             Properties.Settings.Default.Save();
  1313             if (iDisplay.IsOpen())
  1314             {
  1315                 OpenDisplayConnection();
  1316             }
  1317             else
  1318             {
  1319                 UpdateStatus();
  1320             }
  1321         }
  1322 
  1323 
  1324         private void maskedTextBoxTimerInterval_TextChanged(object sender, EventArgs e)
  1325         {
  1326             if (maskedTextBoxTimerInterval.Text != "")
  1327             {
  1328                 int interval = Convert.ToInt32(maskedTextBoxTimerInterval.Text);
  1329 
  1330                 if (interval > 0)
  1331                 {
  1332                     timer.Interval = interval;
  1333                     cds.TimerInterval = timer.Interval;
  1334                     Properties.Settings.Default.Save();
  1335                 }
  1336             }
  1337         }
  1338 
  1339         private void buttonPowerOn_Click(object sender, EventArgs e)
  1340         {
  1341             iDisplay.PowerOn();
  1342         }
  1343 
  1344         private void buttonPowerOff_Click(object sender, EventArgs e)
  1345         {
  1346             iDisplay.PowerOff();
  1347         }
  1348 
  1349         private void buttonShowClock_Click(object sender, EventArgs e)
  1350         {
  1351             iDisplay.ShowClock();
  1352         }
  1353 
  1354         private void buttonHideClock_Click(object sender, EventArgs e)
  1355         {
  1356             iDisplay.HideClock();
  1357         }
  1358     }
  1359 
  1360     /// <summary>
  1361     /// A UI thread copy of a client relevant data.
  1362     /// Keeping this copy in the UI thread helps us deal with threading issues.
  1363     /// </summary>
  1364     public class ClientData
  1365     {
  1366         public ClientData(string aSessionId, ICallback aCallback)
  1367         {
  1368             SessionId = aSessionId;
  1369             Name = "";
  1370             Fields = new List<DataField>();
  1371             Layout = new TableLayout(1, 2); //Default to one column and two rows
  1372             Callback = aCallback;
  1373         }
  1374 
  1375         public string SessionId { get; set; }
  1376         public string Name { get; set; }
  1377         public List<DataField> Fields { get; set; }
  1378         public TableLayout Layout { get; set; }
  1379         public ICallback Callback { get; set; }
  1380     }
  1381 }