//

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

 //

 // This file is part of SharpDisplayManager.

 //

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

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

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

 // (at your option) any later version.

 //

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

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

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

 // GNU General Public License for more details.

 //

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

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

 //

 using System;

 using System.Collections.Generic;

 using System.ComponentModel;

 using System.Data;

 using System.Drawing;

 using System.Linq;

 using System.Text;

 using System.Threading.Tasks;

 using System.Windows.Forms;

 using System.IO;

 using CodeProject.Dialog;

 using System.Drawing.Imaging;

 using System.ServiceModel;

 using System.Threading;

 using System.Diagnostics;

 using System.Deployment.Application;

 using System.Reflection;

 using System.Runtime.InteropServices;

 using System.Security;

 //CSCore

 using CSCore;

 using CSCore.Win32;

 using CSCore.DSP;

 using CSCore.Streams;

 using CSCore.CoreAudioAPI;

 using CSCore.SoundIn;

 // Visualization

 using Visualization;

 // CEC

 using CecSharp;

 //Network

 using NETWORKLIST;

 //

 using SharpDisplayClient;

 using SharpDisplay;

 using MiniDisplayInterop;

 using SharpLib.Display;

 using Ear = SharpLib.Ear;

 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 WndProcDelegate(ref Message aMessage);

     /// <summary>

     /// Our Display manager main form

     /// </summary>

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

     public partial class FormMain : FormMainHid

     {

         //public Manager iManager = new Manager();        

         DateTime LastTickTime;

         Display iDisplay;

         System.Drawing.Bitmap iBmp;

         //TODO: Align that with what we did from Audio Visualizers bitmaps?

         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;

         /// <summary>

         /// Define our display view including layout and fields.

         /// Display view should include one ClientField that will show on client View.

         /// </summary>

         SharpLib.Display.View iDisplayView;

         bool iHasNewDisplayLayout;

         //

         public bool iClosing;

         //

         public bool iSkipFrameRendering;

         //Function pointer for pixel color filtering

         ColorProcessingDelegate iColorFx;

         //Function pointer for pixel X coordinate intercept

         CoordinateTranslationDelegate iScreenX;

         //Function pointer for pixel Y coordinate intercept

         CoordinateTranslationDelegate iScreenY;

         //Audio

         private AudioManager iAudioManager;

         //Network

         private NetworkManager iNetworkManager;

         /// <summary>

         /// CEC - Consumer Electronic Control.

         /// Notably used to turn TV on and off as Windows broadcast monitor on and off notifications.

         /// </summary>

         private ConsumerElectronicControl iCecManager;

         /// <summary>

         /// Manage run when Windows startup option

         /// </summary>

         private StartupManager iStartupManager;

         /// <summary>

         /// System notification icon used to hide our application from the task bar.

         /// </summary>

         private SharpLib.Notification.Control iNotifyIcon;

         /// <summary>

         /// System recording notification icon.

         /// </summary>

         private SharpLib.Notification.Control iRecordingNotification;

         /// <summary>

         /// 

         /// </summary>

         RichTextBoxTraceListener iWriter;

         /// <summary>

         /// Allow user to receive window messages;

         /// </summary>

         public event WndProcDelegate OnWndProc;

         public FormMain()

         {

             if (Properties.Settings.Default.EarManager == null)

             {

                 //No actions in our settings yet

                 Properties.Settings.Default.EarManager = new EarManager();

             }

             else

             {

                 // We loaded events and actions from our settings

                 // Internalizer apparently skips constructor so we need to initialize it here

                 // Though I reckon that should only be needed when loading an empty EAR manager I guess.

                 Properties.Settings.Default.EarManager.Construct();

             }

             iSkipFrameRendering = false;

             iClosing = false;

             iCurrentClientSessionId = "";

             iCurrentClientData = null;

             LastTickTime = DateTime.Now;

             //Instantiate our display and register for events notifications

             iDisplay = new Display();

             iDisplay.OnOpened += OnDisplayOpened;

             iDisplay.OnClosed += OnDisplayClosed;

             //

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

             iStartupManager = new StartupManager();

             iNotifyIcon = new SharpLib.Notification.Control();

             iRecordingNotification = new SharpLib.Notification.Control();

             iDisplayView = new SharpLib.Display.View();

             // Default to a single field showing our client

             iDisplayView.Layout = new TableLayout(1, 1);

             iDisplayView.Fields.Add(new ClientField());

             //Have our designer initialize its controls

             InitializeComponent();

             //Redirect console output

             iWriter = new RichTextBoxTraceListener(richTextBoxLogs);

             Trace.Listeners.Add(iWriter);

             //Populate device types

             PopulateDeviceTypes();

             //Initial status update 

             UpdateStatus();

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

             //Though I could not reproduce it on Windows 10

             iBmp = new System.Drawing.Bitmap(iTableLayoutPanelDisplay.Width, iTableLayoutPanelDisplay.Height,

                 PixelFormat.Format32bppArgb);

             iCreateBitmap = false;

             //Minimize our window if desired

             if (Properties.Settings.Default.StartMinimized)

             {

                 WindowState = FormWindowState.Minimized;

             }

         }

         /// <summary>

         ///

         /// </summary>

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

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

         private void MainForm_Load(object sender, EventArgs e)

         {

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

             if (ApplicationDeployment.IsNetworkDeployed)

             {

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

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

             }

             else

             {

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

                 this.Text += " - development";

             }

             //CSCore

             CreateAudioManager();

             //Network

             iNetworkManager = new NetworkManager();

             iNetworkManager.OnConnectivityChanged += OnConnectivityChanged;

             UpdateNetworkStatus();

             //CEC

             iCecManager = new ConsumerElectronicControl();

             OnWndProc += iCecManager.OnWndProc;

             ResetCec();

             //Harmony

             ResetHarmonyAsync();

             //Setup Events

             PopulateTreeViewEvents();

             //Setup notification icon

             SetupTrayIcon();

             //Setup recording notification

             SetupRecordingNotification();

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

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

             {

                 Visible = false;

             }

 #if !DEBUG

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

 			ClearLayout(iTableLayoutPanelCurrentClient);

             iCurrentClientData = null;

 #else

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

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

 #endif

             //Open display connection on start-up if needed

             if (Properties.Settings.Default.DisplayConnectOnStartup)

             {

                 OpenDisplayConnection();

             }

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

             StartServer();

             //Register for HID events

             RegisterHidDevices();

             //Start Idle client if needed

             if (Properties.Settings.Default.StartIdleClient)

             {

                 StartIdleClient();

             }

         }

         private void CreateAudioManager()

         {

             iAudioManager = new AudioManager();

             iAudioManager.Open(OnDefaultMultiMediaDeviceChanged, OnVolumeNotification);

             UpdateAudioDeviceAndMasterVolumeThreadSafe();

         }

         private void DestroyAudioManager()

         {

             if (iAudioManager != null)

             {

                 iAudioManager.Close();

                 iAudioManager = null;

             }

         }

         /// <summary>

         /// 

         /// </summary>

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

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

         public void OnDefaultMultiMediaDeviceChanged(object sender, DefaultDeviceChangedEventArgs aEvent)

         {

             if (aEvent.DataFlow == DataFlow.Render && aEvent.Role == Role.Multimedia)

             {

                 ResetAudioManagerThreadSafe();

             }

         }

         /// <summary>

         /// 

         /// </summary>

         private void ResetAudioManagerThreadSafe()

         {

             if (InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 BeginInvoke(new Action<FormMain>((sender) => { ResetAudioManagerThreadSafe(); }), this);

                 return;

             }

             //Proper thread, go ahead

             DestroyAudioManager();

             CreateAudioManager();

         }

         /// <summary>

         /// Called when our display is opened.

         /// </summary>

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

         private void OnDisplayOpened(Display aDisplay)

         {

             //Make sure we resume frame rendering

             iSkipFrameRendering = false;

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

             //Our panelDisplay is the container of our tableLayoutPanel

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

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

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

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

             iPanelDisplay.Size = size;

             //Our display was just opened, update our UI

             UpdateStatus();

             //Initiate asynchronous request

             iDisplay.RequestFirmwareRevision();

             //Audio

             UpdateMasterVolumeThreadSafe();

             //Network

             UpdateNetworkStatus();

 #if DEBUG

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

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

             //iDisplay.SetAllIconsStatus(2);

 #endif

         }

         private static void AddActionsToTreeNode(TreeNode aParentNode, Ear.Object aObject)

         {

             foreach (Ear.Action a in aObject.Objects.OfType<Ear.Action>())

             {

                 //Create action node

                 TreeNode actionNode = aParentNode.Nodes.Add(a.Brief());

                 actionNode.Tag = a;

                 //Use color from parent unless our action itself is disabled

                 actionNode.ForeColor = a.Enabled ? aParentNode.ForeColor : Color.DimGray;

                 //Go recursive

                 AddActionsToTreeNode(actionNode,a);

             }

         }

         /// <summary>

         /// 

         /// </summary>

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

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

         private static TreeNode FindTreeNodeForEarObject(Ear.Object aObject, TreeNode aNode)

         {

             if (aNode.Tag == aObject)

             {

                 return aNode;

             }

             foreach (TreeNode n in aNode.Nodes)

             {

                 TreeNode found = FindTreeNodeForEarObject(aObject,n);

                 if (found != null)

                 {

                     return found;

                 }

             }

             return null;

         }

         /// <summary>

         /// 

         /// </summary>

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

         private void SelectEarObject(Ear.Object aObject)

         {

             foreach (TreeNode n in iTreeViewEvents.Nodes)

             {

                 TreeNode found = FindTreeNodeForEarObject(aObject, n);

                 if (found != null)

                 {

                     iTreeViewEvents.SelectedNode=found;

                     iTreeViewEvents.Focus();

                     return;

                 }

             }

         }

         /// <summary>

         /// Populate tree view with events and actions

         /// </summary>

         private void PopulateTreeViewEvents(Ear.Object aSelectedObject=null)

         {

             //Reset our tree

             iTreeViewEvents.Nodes.Clear();

             //Populate registered events

             foreach (Ear.Event e in Properties.Settings.Default.EarManager.Events)

             {

                 //Create our event node

                 //Work out the name of our node

                 string eventNodeName = "";

                 if (!string.IsNullOrEmpty(e.Name))

                 {

                     //That event has a proper name, use it then

                     eventNodeName = $"{e.Name} - {e.Brief()}";

                 }

                 else

                 {

                     //Unnamed events just use brief

                     eventNodeName = e.Brief();

                 }

                 TreeNode eventNode = iTreeViewEvents.Nodes.Add(eventNodeName);

                 eventNode.Tag = e; //For easy access to our event

                 if (!e.Enabled)

                 {

                     //Dim our nodes if disabled

                     eventNode.ForeColor = Color.DimGray;

                 }

                 //Add event description as child node

                 eventNode.Nodes.Add(e.AttributeDescription).ForeColor = eventNode.ForeColor; 

                 //Create child node for actions root

                 TreeNode actionsNode = eventNode.Nodes.Add("Actions");

                 actionsNode.ForeColor = eventNode.ForeColor;

                 // Recursively add our actions for that event

                 AddActionsToTreeNode(actionsNode,e);

             }

             iTreeViewEvents.ExpandAll();

             if (aSelectedObject != null)

             {

                 SelectEarObject(aSelectedObject);

             }            

             // Just to be safe in case the selection did not work

             UpdateEventView();

         }

         /// <summary>

         /// Called when our display is closed.

         /// </summary>

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

         private void OnDisplayClosed(Display aDisplay)

         {

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

             UpdateStatus();

         }

         public void OnConnectivityChanged(NetworkManager aNetwork, NLM_CONNECTIVITY newConnectivity)

         {

             //Update network status

             UpdateNetworkStatus();

         }

         /// <summary>

         /// Update our Network Status

         /// </summary>

         private void UpdateNetworkStatus()

         {

             if (iDisplay.IsOpen())

             {

                 iDisplay.SetIconOnOff(MiniDisplay.IconType.Internet,

                     iNetworkManager.NetworkListManager.IsConnectedToInternet);

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

             }

         }

         int iLastNetworkIconIndex = 0;

         int iUpdateCountSinceLastNetworkAnimation = 0;

         /// <summary>

         /// 

         /// </summary>

         private void UpdateNetworkSignal(DateTime aLastTickTime, DateTime aNewTickTime)

         {

             iUpdateCountSinceLastNetworkAnimation++;

             iUpdateCountSinceLastNetworkAnimation = iUpdateCountSinceLastNetworkAnimation%4;

             if (iDisplay.IsOpen() && iNetworkManager.NetworkListManager.IsConnected &&

                 iUpdateCountSinceLastNetworkAnimation == 0)

             {

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

                 if (iconCount <= 0)

                 {

                     //Prevents div by zero and other undefined behavior

                     return;

                 }

                 iLastNetworkIconIndex++;

                 iLastNetworkIconIndex = iLastNetworkIconIndex%(iconCount*2);

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

                 {

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

                         !(i == 1 && iLastNetworkIconIndex > 4))

                     {

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

                     }

                     else

                     {

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

                     }

                 }

             }

         }

         /// <summary>

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

         /// </summary>

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

         public void OnVolumeNotification(object sender, AudioEndpointVolumeCallbackEventArgs aEvent)

         {

             UpdateMasterVolumeThreadSafe();

         }

         /// <summary>

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

         /// </summary>

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

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

         private void trackBarMasterVolume_Scroll(object sender, EventArgs e)

         {

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

             iAudioManager.Volume.IsMuted = false;

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

             iAudioManager.Volume.MasterVolumeLevelScalar = trackBarMasterVolume.Value/100.0f;

         }

         /// <summary>

         /// Mute check box changed.

         /// </summary>

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

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

         private void checkBoxMute_CheckedChanged(object sender, EventArgs e)

         {

             iAudioManager.Volume.IsMuted = checkBoxMute.Checked;

         }

         /// <summary>

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

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

         /// </summary>

         private void UpdateMasterVolumeThreadSafe()

         {

             if (InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 BeginInvoke(new Action<FormMain>((sender) => { UpdateMasterVolumeThreadSafe(); }), this);

                 return;

             }

             //Update volume slider

             float volumeLevelScalar = iAudioManager.Volume.MasterVolumeLevelScalar;

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

             //Update mute checkbox

             checkBoxMute.Checked = iAudioManager.Volume.IsMuted;

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

             if (iDisplay.IsOpen())

             {

                 //First take care our our volume level icons

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

                 if (volumeIconCount > 0)

                 {

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

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

                     float currentVolume = volumeLevelScalar*volumeIconCount;

                     int segmentOnCount = Convert.ToInt32(currentVolume);

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

                     bool roundedUp = segmentOnCount > currentVolume;

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

                     {

                         if (i < segmentOnCount)

                         {

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

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

                             {

                                 //Half brightness

                                 iDisplay.SetIconStatus(MiniDisplay.IconType.Volume, i,

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

                             }

                             else

                             {

                                 //Full brightness

                                 iDisplay.SetIconStatus(MiniDisplay.IconType.Volume, i,

                                     iDisplay.IconStatusCount(MiniDisplay.IconType.Volume) - 1);

                             }

                         }

                         else

                         {

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

                         }

                     }

                 }

                 //Take care of our mute icon

                 iDisplay.SetIconOnOff(MiniDisplay.IconType.Mute, iAudioManager.Volume.IsMuted);

             }

         }

         /// <summary>

         /// 

         /// </summary>

         private void UpdateAudioVisualization()

         {

             // No point if we don't have a current client

             if (iCurrentClientData == null)

             {

                 return;

             }

             // Update our math

             if (iAudioManager==null || iAudioManager.Spectrum==null || !iAudioManager.Spectrum.Update())

             {

                 //Nothing changed no need to render

                 return;

             }

             // Check if our current client has an Audio Visualizer field

             // and render them as needed

             foreach (DataField f in iCurrentClientData.View.Fields)

             {

                 if (f is AudioVisualizerField)

                 {

                     AudioVisualizerField avf = (AudioVisualizerField)f;

                     Control ctrl = iTableLayoutPanelCurrentClient.GetControlFromPosition(avf.Column, avf.Row);

                     if (ctrl is PictureBox)

                     {

                         PictureBox pb = (PictureBox)ctrl;

                         if (iAudioManager.Spectrum.Render(pb.Image, Color.Black, Color.Black, Color.White, false))

                         {

                             pb.Invalidate();

                         }

                     }

                 }

             }

         }

         /// <summary>

         /// 

         /// </summary>

         private void UpdateAudioDeviceAndMasterVolumeThreadSafe()

         {            

             if (InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 BeginInvoke(new Action<FormMain>((sender) => { UpdateAudioDeviceAndMasterVolumeThreadSafe(); }), this);

                 return;

             }

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

             try

             {

                 //Update our label

                 iLabelDefaultAudioDevice.Text = iAudioManager.DefaultDevice.FriendlyName;

                 //Show our volume in our track bar

                 UpdateMasterVolumeThreadSafe();

                 //

                 trackBarMasterVolume.Enabled = true;

             }

             catch (Exception ex)

             {

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

                 Debug.WriteLine(ex.ToString());

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

                 trackBarMasterVolume.Enabled = false;

             }

         }

         /// <summary>

         /// 

         /// </summary>

         private void PopulateDeviceTypes()

         {

             int count = Display.TypeCount();

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

             {

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

             }

         }

         /// <summary>

         ///

         /// </summary>

         private void SetupTrayIcon()

         {

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

             iNotifyIcon.Text = "Sharp Display Manager";

             iNotifyIcon.Visible = true;

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

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

             {

                 SysTrayHideShow();

             };

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

             ContextMenu contextMenu = new ContextMenu();

             //Context menu item to toggle visibility

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

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

             {

                 SysTrayHideShow();

             };

             contextMenu.MenuItems.Add(hideShowItem);

             //Context menu item separator

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

             //Context menu exit item

             MenuItem exitItem = new MenuItem("Exit");

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

             {

                 Application.Exit();

             };

             contextMenu.MenuItems.Add(exitItem);

             iNotifyIcon.ContextMenu = contextMenu;

         }

         /// <summary>

         ///

         /// </summary>

         private void SetupRecordingNotification()

         {

             iRecordingNotification.Icon = GetIcon("record.ico");

             iRecordingNotification.Text = "No recording";

             iRecordingNotification.Visible = false;

         }

         /// <summary>

         /// Access icons from embedded resources.

         /// </summary>

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

         /// <returns></returns>

         public static Icon GetIcon(string aName)

         {

             string[] names = Assembly.GetExecutingAssembly().GetManifestResourceNames();

             foreach (string name in names)

             {

                 //Find a resource name that ends with the given name

                 if (name.EndsWith(aName))

                 {

                     using (Stream stream = Assembly.GetExecutingAssembly().GetManifestResourceStream(name))

                     {

                         return new Icon(stream);

                     }

                 }

             }

             return null;

         }

         /// <summary>

         /// Set our current client.

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

         /// </summary>

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

         void SetCurrentClient(string aSessionId, bool aForce = false)

         {

             if (aSessionId == iCurrentClientSessionId)

             {

                 //Given client is already the current one.

                 //Don't bother changing anything then.

                 return;

             }

             ClientData requestedClientData = iClients[aSessionId];

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

             if (iCurrentClientData != null)

             {

                 //Do not switch client if priority of current client is higher 

                 if (!aForce && requestedClientData.Priority < iCurrentClientData.Priority)

                 {

                     return;

                 }

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

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

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

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

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

                 if (!aForce &&

                     requestedClientData.Priority == iCurrentClientData.Priority &&

                     //Time sharing is only if clients have the same priority

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

                 {

                     //Don't switch clients too often

                     return;

                 }

             }

             //Set current client ID.

             iCurrentClientSessionId = aSessionId;

             //Set the time we last switched to that client

             iClients[aSessionId].LastSwitchTime = DateTime.Now;

             //Fetch and set current client data.

             iCurrentClientData = requestedClientData;

             //Apply layout and set data fields.

             UpdateTableLayoutPanel(iCurrentClientData.View, iTableLayoutPanelCurrentClient);

         }

         private void buttonFont_Click(object sender, EventArgs e)

         {

             //fontDialog.ShowColor = true;

             //fontDialog.ShowApply = true;

             fontDialog.ShowEffects = true;

             fontDialog.Font = cds.Font;

             fontDialog.FixedPitchOnly = checkBoxFixedPitchFontOnly.Checked;

             //fontDialog.ShowHelp = true;

             //fontDlg.MaxSize = 40;

             //fontDlg.MinSize = 22;

             //fontDialog.Parent = this;

             //fontDialog.StartPosition = FormStartPosition.CenterParent;

             //DlgBox.ShowDialog(fontDialog);

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

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

             {

                 //Save font settings

                 cds.Font = fontDialog.Font;

                 Properties.Settings.Default.Save();

                 //

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

                 UpdateFonts(iTableLayoutPanelDisplay);

                 //

                 CheckFontHeight();

             }

         }

         /// <summary>

         /// TODO: review this in respect to our logical font feature when we get there.

         /// </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 iTableLayoutPanelCurrentClient.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(iTableLayoutPanelDisplay.Width, iTableLayoutPanelDisplay.Height);

             iTableLayoutPanelDisplay.DrawToBitmap(bmp, iTableLayoutPanelDisplay.ClientRectangle);

             //Bitmap bmpToSave = new Bitmap(bmp);

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

             /*

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

             using (MemoryStream memory = new MemoryStream())

             {

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

                 {

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

                     byte[] bytes = memory.ToArray();

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

                 }

             }

              */

         }

         private void CheckForRequestResults()

         {

             if (iDisplay.IsRequestPending())

             {

                 switch (iDisplay.AttemptRequestCompletion())

                 {

                     case MiniDisplay.Request.FirmwareRevision:

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

                         //Issue next request then

                         iDisplay.RequestPowerSupplyStatus();

                         break;

                     case MiniDisplay.Request.PowerSupplyStatus:

                         if (iDisplay.PowerSupplyStatus())

                         {

                             toolStripStatusLabelPower.Text = "ON";

                         }

                         else

                         {

                             toolStripStatusLabelPower.Text = "OFF";

                         }

                         //Issue next request then

                         iDisplay.RequestDeviceId();

                         break;

                     case MiniDisplay.Request.DeviceId:

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

                         //No more request to issue

                         break;

                 }

             }

         }

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

         {

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

             {

                 return 0xFFFFFFFF;

             }

             return 0x00000000;

         }

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

         {

             return aPixel;

         }

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

         {

             return ~aPixel;

         }

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

         {

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

             {

                 return ~aPixel;

             }

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

             {

                 return ~aPixel;

             }

             return 0x00000000;

         }

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

         {

             return aBmp.Width - aX - 1;

         }

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

         {

             return iBmp.Height - aY - 1;

         }

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

         {

             return aX;

         }

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

         {

             return aY;

         }

         /// <summary>

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

         /// </summary>

         private void SetupPixelDelegates()

         {

             //Select our pixel processing routine

             if (cds.InverseColors)

             {

                 //iColorFx = ColorChessboard;

                 iColorFx = ColorInversed;

             }

             else

             {

                 iColorFx = ColorWhiteIsOn;

             }

             //Select proper coordinate translation functions

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

             if (cds.ReverseScreen)

             {

                 iScreenX = ScreenReversedX;

                 iScreenY = ScreenReversedY;

             }

             else

             {

                 iScreenX = ScreenX;

                 iScreenY = ScreenY;

             }

         }

         /// <summary>

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

         /// TODO: Use a threading timer instead of a Windows form timer.

         /// </summary>

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

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

         private void timer_Tick(object sender, EventArgs e)

         {

             //Update our animations

             DateTime NewTickTime = DateTime.Now;

             UpdateNetworkSignal(LastTickTime, NewTickTime);

             // Update animation for all our marquees

             UpdateMarqueesAnimations(iTableLayoutPanelDisplay, LastTickTime, NewTickTime);

             // Update audio visualization

             UpdateAudioVisualization();

             //Update our display

             if (iDisplay.IsOpen())

             {

                 CheckForRequestResults();

                 //Check if frame rendering is needed

                 //Typically used when showing clock

                 if (!iSkipFrameRendering)

                 {

                     //Draw to bitmap

                     if (iCreateBitmap)

                     {

                         iBmp = new System.Drawing.Bitmap(iTableLayoutPanelDisplay.Width, iTableLayoutPanelDisplay.Height,

                             PixelFormat.Format32bppArgb);

                         iCreateBitmap = false;

                     }

                     iTableLayoutPanelDisplay.DrawToBitmap(iBmp, iTableLayoutPanelDisplay.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/iTimerDisplay.Interval).ToString() + " FPS";

             LastTickTime = NewTickTime;

         }

         /// <summary>

         /// Update marquee animation children of the given control.

         /// </summary>

         static private void UpdateMarqueesAnimations(Control aControl, DateTime aLastTickTime, DateTime aNewTickTime)

         {

             // For each our children

             foreach (Control ctrl in aControl.Controls)

             {

                 // Update animation if it is a marquee control

                 if (ctrl is MarqueeLabel)

                 {

                     ((MarqueeLabel)ctrl).UpdateAnimation(aLastTickTime, aNewTickTime);

                 }

                 // Go one level deeper by recursion

                 UpdateMarqueesAnimations(ctrl, aLastTickTime, aNewTickTime);

             }

         }

         /// <summary>

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

         /// </summary>

         private void OpenDisplayConnection()

         {

             CloseDisplayConnection();

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

             {

                 UpdateStatus();

                 toolStripStatusLabelConnect.Text = "Connection error";

             }

         }

         private void CloseDisplayConnection()

         {

             //Status will be updated upon receiving the closed event

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

             {

                 return;

             }

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

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

             if (!iSkipFrameRendering)

             {

                 iDisplay.Clear();

                 iDisplay.SwapBuffers();

             }

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

             iDisplay.Close();

         }

         private void buttonOpen_Click(object sender, EventArgs e)

         {

             OpenDisplayConnection();

         }

         private void buttonClose_Click(object sender, EventArgs e)

         {

             CloseDisplayConnection();

         }

         private void buttonClear_Click(object sender, EventArgs e)

         {

             iDisplay.Clear();

             iDisplay.SwapBuffers();

         }

         private void buttonFill_Click(object sender, EventArgs e)

         {

             iDisplay.Fill();

             iDisplay.SwapBuffers();

         }

         private void trackBarBrightness_Scroll(object sender, EventArgs e)

         {

             cds.Brightness = trackBarBrightness.Value;

             Properties.Settings.Default.Save();

             iDisplay.SetBrightness(trackBarBrightness.Value);

         }

         /// <summary>

         /// CDS stands for Current Display Settings

         /// </summary>

         private DisplaySettings cds

         {

             get

             {

                 DisplaysSettings settings = Properties.Settings.Default.DisplaysSettings;

                 if (settings == null)

                 {

                     settings = new DisplaysSettings();

                     settings.Init();

                     Properties.Settings.Default.DisplaysSettings = settings;

                 }

                 //Make sure all our settings have been created

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

                 {

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

                 }

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

                 return displaySettings;

             }

         }

         /// <summary>

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

         /// </summary>

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

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

         public float IsFixedWidth(Font ft)

         {

             Graphics g = CreateGraphics();

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

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

             bool fixedWidth = true;

             foreach (char c in charSizes)

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

                     charWidth)

                     fixedWidth = false;

             if (fixedWidth)

             {

                 return charWidth;

             }

             return 0.0f;

         }

         /// <summary>

         /// Update fonts in our control tree.

         /// </summary>

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

         private void UpdateFonts(Control aControl)

         {

             foreach (Control ctrl in aControl.Controls)

             {

                 if (ctrl is MarqueeLabel)

                 {

                     MarqueeLabel marquee = (MarqueeLabel)ctrl;

                     marquee.Font = cds.Font;

                 }

                 // Recurse

                 UpdateFonts(ctrl);

             }

         }

         /// <summary>

         /// Update marquees separator in our control tree.

         /// </summary>

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

         private void UpdateMarqueesSeparator(Control aControl)

         {

             foreach (Control ctrl in aControl.Controls)

             {

                 if (ctrl is MarqueeLabel)

                 {

                     MarqueeLabel marquee = (MarqueeLabel)ctrl;

                     marquee.Separator = cds.Separator;

                 }

                 // Recurse

                 UpdateMarqueesSeparator(ctrl);

             }

         }

         /// <summary>

         /// Synchronize UI with settings

         /// </summary>

         private void UpdateStatus()

         {

             //Load settings

             checkBoxShowBorders.Checked = cds.ShowBorders;

             iTableLayoutPanelCurrentClient.CellBorderStyle = (cds.ShowBorders

                 ? TableLayoutPanelCellBorderStyle.Single

                 : TableLayoutPanelCellBorderStyle.None);

             //Set the proper font to each of our labels

             UpdateFonts(iTableLayoutPanelDisplay);

             CheckFontHeight();

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

             checkBoxAutoStart.Checked = iStartupManager.Startup;

             //CEC settings

             comboBoxHdmiPort.SelectedIndex = Properties.Settings.Default.CecHdmiPort - 1;

             //Mini Display settings

             checkBoxReverseScreen.Checked = cds.ReverseScreen;

             checkBoxInverseColors.Checked = cds.InverseColors;

             checkBoxShowVolumeLabel.Checked = cds.ShowVolumeLabel;

             checkBoxScaleToFit.Checked = cds.ScaleToFit;

             maskedTextBoxMinFontSize.Enabled = cds.ScaleToFit;

             labelMinFontSize.Enabled = cds.ScaleToFit;

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

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

             comboBoxDisplayType.SelectedIndex = cds.DisplayType;

             iTimerDisplay.Interval = cds.TimerInterval;

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

             textBoxScrollLoopSeparator.Text = cds.Separator;

             //

             SetupPixelDelegates();

             if (iDisplay.IsOpen())

             {

                 //We have a display connection

                 //Reflect that in our UI

                 StartTimer();

                 iTableLayoutPanelDisplay.Enabled = true;

                 iTableLayoutPanelCurrentClient.Enabled = true;

                 iPanelDisplay.Enabled = true;

                 //Only setup brightness if display is open

                 trackBarBrightness.Minimum = iDisplay.MinBrightness();

                 trackBarBrightness.Maximum = iDisplay.MaxBrightness();

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

                 {

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

                     //Use max brightness instead

                     trackBarBrightness.Value = iDisplay.MaxBrightness();

                     iDisplay.SetBrightness(iDisplay.MaxBrightness());

                 }

                 else

                 {

                     trackBarBrightness.Value = cds.Brightness;

                     iDisplay.SetBrightness(cds.Brightness);

                 }

                 //Try compute the steps to something that makes sense

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

                 trackBarBrightness.SmallChange = 1;

                 //

                 buttonFill.Enabled = true;

                 buttonClear.Enabled = true;

                 buttonOpen.Enabled = false;

                 buttonClose.Enabled = true;

                 trackBarBrightness.Enabled = true;

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

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

                 if (iDisplay.SupportPowerOnOff())

                 {

                     buttonPowerOn.Enabled = true;

                     buttonPowerOff.Enabled = true;

                 }

                 else

                 {

                     buttonPowerOn.Enabled = false;

                     buttonPowerOff.Enabled = false;

                 }

                 if (iDisplay.SupportClock())

                 {

                     buttonShowClock.Enabled = true;

                     buttonHideClock.Enabled = true;

                 }

                 else

                 {

                     buttonShowClock.Enabled = false;

                     buttonHideClock.Enabled = false;

                 }

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

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

                 if (cds.ShowVolumeLabel)

                 {

                     iDisplay.SetIconOn(MiniDisplay.IconType.VolumeLabel);

                 }

                 else

                 {

                     iDisplay.SetIconOff(MiniDisplay.IconType.VolumeLabel);

                 }

             }

             else

             {

                 //Display connection not available

                 //Reflect that in our UI

 #if DEBUG

                 //In debug start our timer even if we don't have a display connection

                 StartTimer();

 #else

     //In production environment we don't need our timer if no display connection

                 StopTimer();

 #endif

                 checkBoxShowVolumeLabel.Enabled = false;

                 iTableLayoutPanelDisplay.Enabled = false;

                 iTableLayoutPanelCurrentClient.Enabled = false;

                 iPanelDisplay.Enabled = false;

                 buttonFill.Enabled = false;

                 buttonClear.Enabled = false;

                 buttonOpen.Enabled = true;

                 buttonClose.Enabled = false;

                 trackBarBrightness.Enabled = false;

                 buttonPowerOn.Enabled = false;

                 buttonPowerOff.Enabled = false;

                 buttonShowClock.Enabled = false;

                 buttonHideClock.Enabled = false;

                 toolStripStatusLabelConnect.Text = "Disconnected";

                 toolStripStatusLabelPower.Text = "N/A";

             }

         }

         /// <summary>

         /// 

         /// </summary>

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

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

         private void checkBoxShowVolumeLabel_CheckedChanged(object sender, EventArgs e)

         {

             cds.ShowVolumeLabel = checkBoxShowVolumeLabel.Checked;

             Properties.Settings.Default.Save();

             UpdateStatus();

         }

         private void checkBoxShowBorders_CheckedChanged(object sender, EventArgs e)

         {

             //Save our show borders setting

             iTableLayoutPanelCurrentClient.CellBorderStyle = (checkBoxShowBorders.Checked

                 ? TableLayoutPanelCellBorderStyle.Single

                 : TableLayoutPanelCellBorderStyle.None);

             cds.ShowBorders = checkBoxShowBorders.Checked;

             Properties.Settings.Default.Save();

             CheckFontHeight();

         }

         private void checkBoxAutoStart_CheckedChanged(object sender, EventArgs e)

         {

             iStartupManager.Startup = checkBoxAutoStart.Checked;

         }

         private void checkBoxReverseScreen_CheckedChanged(object sender, EventArgs e)

         {

             //Save our reverse screen setting

             cds.ReverseScreen = checkBoxReverseScreen.Checked;

             Properties.Settings.Default.Save();

             SetupPixelDelegates();

         }

         private void checkBoxInverseColors_CheckedChanged(object sender, EventArgs e)

         {

             //Save our inverse colors setting

             cds.InverseColors = checkBoxInverseColors.Checked;

             Properties.Settings.Default.Save();

             SetupPixelDelegates();

         }

         private void checkBoxScaleToFit_CheckedChanged(object sender, EventArgs e)

         {

             //Save our scale to fit setting

             cds.ScaleToFit = checkBoxScaleToFit.Checked;

             Properties.Settings.Default.Save();

             //

             labelMinFontSize.Enabled = cds.ScaleToFit;

             maskedTextBoxMinFontSize.Enabled = cds.ScaleToFit;

         }

         private void MainForm_Resize(object sender, EventArgs e)

         {

             if (WindowState == FormWindowState.Minimized)

             {

                 // To workaround our empty bitmap bug on Windows 7 we need to recreate our bitmap when the application is minimized

                 // That's apparently not needed on Windows 10 but we better leave it in place.

                 iCreateBitmap = true;

             }

         }

         private void MainForm_FormClosing(object sender, FormClosingEventArgs e)

         {

             iCecManager.Stop();

             iNetworkManager.Dispose();

             DestroyAudioManager();

             CloseDisplayConnection();

             StopServer();

             e.Cancel = iClosing;

         }

         public void StartServer()

         {

             iServiceHost = new ServiceHost

                 (

                 typeof(Session),

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

                 );

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

                 "DisplayService");

             iServiceHost.Open();

         }

         public void StopServer()

         {

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

             {

                 //Tell our clients

                 iClosing = true;

                 BroadcastCloseEvent();

             }

             else if (iClosing)

             {

                 if (

                     MessageBox.Show("Force exit?", "Waiting for clients...", MessageBoxButtons.YesNo,

                         MessageBoxIcon.Warning) == DialogResult.Yes)

                 {

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

                 }

             }

             else

             {

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

                 //iServiceHost.Close();

             }

         }

         /// <summary>

         /// 

         /// </summary>

         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.iFormMain.iTreeViewClients.Nodes.Remove(

                         Program.iFormMain.iTreeViewClients.Nodes.Find(client, false)[0]);

                 }

             }

             if (iClients.Count == 0)

             {

                 ClearLayout(iTableLayoutPanelCurrentClient);

                 iCurrentClientData = null;

             }

         }

         /// <summary>

         /// Just remove all our fields.

         /// </summary>

         static private void ClearLayout(TableLayoutPanel aPanel)

         {

             // For each loop did not work as calling Dispose on a control removes it from the collection.

             // We make sure every control are disposed of notably to turn off visualizer when no more needed.

             // That's the only way we found to make sure Control.Disposed is called in a timely fashion.

             // Though that loop is admetitly dangerous as if one of the control does not removes itself from the list we end up with infinite loop.

             // That's what happened with our MarqueeLabel until we fixed it's Dispose override.

             while (aPanel.Controls.Count>0)

             {

                 // Dispose our last item

                 aPanel.Controls[aPanel.Controls.Count-1].Dispose();

             }

             aPanel.Controls.Clear();

             aPanel.RowStyles.Clear();

             aPanel.ColumnStyles.Clear();

             aPanel.RowCount = 0;

             aPanel.ColumnCount = 0;            

         }

         /// <summary>

         /// Just launch a demo client.

         /// </summary>

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

         {

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

             SharpDisplayClient.StartParams myParams = new SharpDisplayClient.StartParams(

                 new Point(this.Right, this.Top), aTopText, aBottomText);

             clientThread.Start(myParams);

             BringToFront();

         }

         /// <summary>

         /// Just launch our idle client.

         /// </summary>

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

         {

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

             SharpDisplayClientIdle.StartParams myParams =

                 new SharpDisplayClientIdle.StartParams(new Point(this.Right, this.Top), aTopText, aBottomText);

             clientThread.Start(myParams);

             BringToFront();

         }

         private void buttonStartClient_Click(object sender, EventArgs e)

         {

             StartNewClient();

         }

         private void buttonSuspend_Click(object sender, EventArgs e)

         {

             ToggleTimer();

         }

         private void StartTimer()

         {

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

             iTimerDisplay.Enabled = true;

             UpdateSuspendButton();

         }

         private void StopTimer()

         {

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

             iTimerDisplay.Enabled = false;

             UpdateSuspendButton();

         }

         private void ToggleTimer()

         {

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

             iTimerDisplay.Enabled = !iTimerDisplay.Enabled;

             UpdateSuspendButton();

         }

         private void UpdateSuspendButton()

         {

             if (!iTimerDisplay.Enabled)

             {

                 buttonSuspend.Text = "Run";

             }

             else

             {

                 buttonSuspend.Text = "Pause";

             }

         }

         private void buttonCloseClients_Click(object sender, EventArgs e)

         {

             BroadcastCloseEvent();

         }

         private void treeViewClients_AfterSelect(object sender, TreeViewEventArgs e)

         {

             //Root node must have at least one child

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

             {

                 return;

             }

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

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

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

             {

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

                 SetCurrentClient(sessionId, true);

             }

         }

         /// <summary>

         ///

         /// </summary>

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

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

         public void AddClientThreadSafe(string aSessionId, ICallback aCallback)

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 AddClientDelegate d = new AddClientDelegate(AddClientThreadSafe);

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

             }

             else

             {

                 //We are in the proper thread

                 //Add this session to our collection of clients

                 ClientData newClient = new ClientData(aSessionId, aCallback);

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

                 //Add this session to our UI

                 UpdateClientTreeViewNode(newClient);

             }

         }

         /// <summary>

         /// Find the client with the highest priority if any.

         /// </summary>

         /// <returns>Our highest priority client or null if not a single client is connected.</returns>

         public ClientData FindHighestPriorityClient()

         {

             ClientData highestPriorityClient = null;

             foreach (var client in iClients)

             {

                 if (highestPriorityClient == null || client.Value.Priority > highestPriorityClient.Priority)

                 {

                     highestPriorityClient = client.Value;

                 }

             }

             return highestPriorityClient;

         }

         /// <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.iFormMain.iClients.Keys.Contains(aSessionId))

                 {

                     Program.iFormMain.iClients.Remove(aSessionId);

                     Program.iFormMain.iTreeViewClients.Nodes.Remove(

                         Program.iFormMain.iTreeViewClients.Nodes.Find(aSessionId, false)[0]);

                     //Update recording status too whenever a client is removed

                     UpdateRecordingNotification();

                 }

                 if (iCurrentClientSessionId == aSessionId)

                 {

                     //The current client is closing

                     iCurrentClientData = null;

                     //Find the client with the highest priority and set it as current

                     ClientData newCurrentClient = FindHighestPriorityClient();

                     if (newCurrentClient != null)

                     {

                         SetCurrentClient(newCurrentClient.SessionId, true);

                     }

                 }

                 if (iClients.Count == 0)

                 {

                     //Clear our screen when last client disconnects

                     ClearLayout(iTableLayoutPanelCurrentClient);

                     iCurrentClientData = null;

                     if (iClosing)

                     {

                         //We were closing our form

                         //All clients are now closed

                         //Just resume our close operation

                         iClosing = false;

                         Close();

                     }

                 }

             }

         }

         /// <summary>

         ///

         /// </summary>

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

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

         public void SetClientLayoutThreadSafe(string aSessionId, TableLayout aLayout)

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 Invoke(new Action<FormMain>((sender) => { SetClientLayoutThreadSafe(aSessionId, aLayout); }), this);

                 return;

             }

             ClientData client = iClients[aSessionId];

             if (client == null)

             {

                 //TODO: logs

                 return;

             }

             // If we have a matching client and we want to change the client layout

             if (client.Target == Target.Client)

             {

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

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

                 {

                     Debug.Print("SetClientLayoutThreadSafe: Layout updated.");

                     //Set our client layout then

                     client.View.Layout = aLayout;

                     //So that next time we update all our fields at ones

                     client.HasNewLayout = true;

                     //Layout has changed clear our fields then

                     client.View.Fields.Clear();

                     //

                     UpdateClientTreeViewNode(client);

                 }

                 else

                 {

                     Debug.Print("SetClientLayoutThreadSafe: Layout has not changed.");

                 }

             }

             else if (client.Target == Target.Display)

             {

                 // Mark our display layout has updated and wait for the fields.

                 // Is display layout a property from our client?

                 //iTableLayoutPanelDisplay. = aLayout;

             }

         }

         /// <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

                 Invoke(new Action<FormMain>((sender) => { SetClientFieldThreadSafe(aSessionId, aField); }), this);

             }

             else

             {

                 //We are in the proper thread

                 //Call the non-thread-safe variant

                 SetClientField(aSessionId, aField);

             }

         }

         /// <summary>

         /// Set a data field in the given client.

         /// </summary>

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

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

         private void SetClientField(string aSessionId, DataField aField)

         {

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

             ClientData client = iClients[aSessionId];

             bool layoutChanged = false;

             bool contentChanged = true;

             //Fetch our field index

             int fieldIndex = client.View.FindSameFieldIndex(aField);

             if (fieldIndex < 0)

             {

                 //No corresponding field, just bail out

                 return;

             }

             //Keep our previous field in there

             DataField previousField = client.View.Fields[fieldIndex];

             //Just update that field then 

             client.View.Fields[fieldIndex] = aField;

             if (!aField.IsTableField)

             {

                 //We are done then if that field is not in our table layout

                 return;

             }

             TableField tableField = (TableField) aField;

             if (previousField.IsSameLayout(aField))

             {

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

                 if (aSessionId == iCurrentClientSessionId)

                 {

                     Control ctrl = iTableLayoutPanelCurrentClient.GetControlFromPosition(tableField.Column, tableField.Row);

                     if (aField.IsTextField && ctrl is MarqueeLabel)

                     {

                         TextField textField = (TextField)aField;

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

                         MarqueeLabel label = (MarqueeLabel)ctrl;

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

                         label.Text = textField.Text;

                         label.TextAlign = textField.Alignment;

                     }

                     else if (aField.IsBitmapField && ctrl is PictureBox)

                     {

                         BitmapField bitmapField = (BitmapField)aField;

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

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

                         PictureBox pictureBox = (PictureBox)ctrl;

                         pictureBox.Image = bitmapField.Bitmap;

                     }

                     else if (aField is AudioVisualizerField && ctrl is PictureBox)

                     {

                         contentChanged = false; // Since nothing was changed

                     }

                     else

                     {

                         layoutChanged = true;

                     }

                 }

             }

             else

             {

                 layoutChanged = true;

             }

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

             if (contentChanged || layoutChanged)

             {

                 UpdateClientTreeViewNode(client);

                 //

                 if (layoutChanged)

                 {

                     Debug.Print("Layout changed");

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

                     if (aSessionId == iCurrentClientSessionId)

                     {

                         //Apply layout and set data fields.

                         UpdateTableLayoutPanel(iCurrentClientData.View, iTableLayoutPanelCurrentClient);

                     }

                 }

                 else

                 {

                     Debug.Print("Layout has not changed.");

                 }

             }

             else

             {

                 Debug.Print("WARNING: content and layout have not changed!");

             }

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

             SetCurrentClient(aSessionId);

         }

         /// <summary>

         ///

         /// </summary>

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

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

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 Invoke(new Action<FormMain>((sender) => { SetClientFieldsThreadSafe(aSessionId, aFields); }), this);

             }

             else

             {

                 ClientData client = iClients[aSessionId];

                 if (client.HasNewLayout)

                 {

                     //TODO: Assert client.Count == 0

                     //Our layout was just changed

                     //Do some special handling to avoid re-creating our panel N times, once for each fields

                     client.HasNewLayout = false;

                     //Just set all our fields then

                     client.View.Fields.AddRange(aFields);

                     //Try switch to that client

                     SetCurrentClient(aSessionId);

                     //If we are updating the current client update our panel

                     if (aSessionId == iCurrentClientSessionId)

                     {

                         //Apply layout and set data fields.

                         UpdateTableLayoutPanel(iCurrentClientData.View, iTableLayoutPanelCurrentClient);

                     }

                     UpdateClientTreeViewNode(client);

                 }

                 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

                 Invoke(new Action<FormMain>((sender) => { SetClientNameThreadSafe(aSessionId, aName); }), this);

             }

             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);

                 }

             }

         }

         ///

         public void SetClientPriorityThreadSafe(string aSessionId, uint aPriority)

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 Invoke(new Action<FormMain>((sender) => { SetClientPriorityThreadSafe(aSessionId, aPriority); }), this);

             }

             else

             {

                 //We are in the proper thread

                 //Get our client

                 ClientData client = iClients[aSessionId];

                 if (client != null)

                 {

                     //Set its priority

                     client.Priority = aPriority;

                     //Update our tree-view

                     UpdateClientTreeViewNode(client);

                     //Change our current client as per new priority

                     ClientData newCurrentClient = FindHighestPriorityClient();

                     if (newCurrentClient != null)

                     {

                         SetCurrentClient(newCurrentClient.SessionId);

                     }

                 }

             }

         }

         /// <summary>

         /// 

         /// </summary>

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

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

         public void SetClientTargetThreadSafe(string aSessionId, Target aTarget)

         {

             if (this.InvokeRequired)

             {

                 //Not in the proper thread, invoke ourselves

                 Invoke(new Action<FormMain>((sender) => { SetClientTargetThreadSafe(aSessionId, aTarget); }), this);

             }

             else

             {

                 //We are in the proper thread

                 //Get our client

                 ClientData client = iClients[aSessionId];

                 if (client != null)

                 {

                     //Set its priority

                     client.Target = aTarget;

                     //Update our tree-view

                     //UpdateClientTreeViewNode(client);

                 }

             }

         }

         /// <summary>

         /// 

         /// </summary>

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

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

         /// <returns></returns>

         public static string Truncate(string value, int maxChars)

         {

             return value.Length <= maxChars ? value : value.Substring(0, maxChars - 3) + "...";

         }

         /// <summary>

         /// Update our recording notification.

         /// </summary>

         private void UpdateRecordingNotification()

         {

             //Go through each 

             bool activeRecording = false;

             string text = "";

             RecordingField recField = new RecordingField();

             foreach (var client in iClients)

             {

                 RecordingField rec = (RecordingField) client.Value.View.FindSameFieldAs(recField);

                 if (rec != null && rec.IsActive)

                 {

                     activeRecording = true;

                     //Don't break cause we are collecting the names/texts.

                     if (!String.IsNullOrEmpty(rec.Text))

                     {

                         text += (rec.Text + "\n");

                     }

                     else

                     {

                         //Not text for that recording, use client name instead

                         text += client.Value.Name + " recording\n";

                     }

                 }

             }

             //Update our text no matter what, can't have more than 63 characters otherwise it throws an exception.

             iRecordingNotification.Text = Truncate(text, 63);

             //Change visibility of notification if needed

             if (iRecordingNotification.Visible != activeRecording)

             {

                 iRecordingNotification.Visible = activeRecording;

                 //Assuming the notification icon is in sync with our display icon

                 //Take care of our REC icon

                 if (iDisplay.IsOpen())

                 {

                     iDisplay.SetIconOnOff(MiniDisplay.IconType.Recording, activeRecording);

                 }

             }

         }

         /// <summary>

         ///

         /// </summary>

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

         private void UpdateClientTreeViewNode(ClientData aClient)

         {

             Debug.Print("UpdateClientTreeViewNode");

             if (aClient == null)

             {

                 return;

             }

             //Hook in record icon update too

             UpdateRecordingNotification();

             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 = iTreeViewClients.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

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

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

             }

             if (node != null)

             {

                 //Change its name

                 if (!String.IsNullOrEmpty(aClient.Name))

                 {

                     //We have a name, use 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;

                 }

                 //Display client priority

                 node.Nodes.Add(new TreeNode("Priority: " + aClient.Priority));

                 if (aClient.View.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.View.Fields)

                     {

                         if (field.IsTextField)

                         {

                             TextField textField = (TextField) field;

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

                         }

                         else if (field.IsBitmapField)

                         {

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

                         }

                         else if (field is AudioVisualizerField)

                         {

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

                         }

                         else if (field.IsRecordingField)

                         {

                             RecordingField recordingField = (RecordingField) field;

                             textsRoot.Nodes.Add(new TreeNode("[Recording]" + recordingField.IsActive));

                         }

                     }

                 }

                 node.ExpandAll();

             }

         }

         /// <summary>

         /// Update our display table layout.

         /// Will instanciated every field control as defined by our client.

         /// Fields must be specified by rows from the left.

         /// </summary>

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

         private void UpdateTableLayoutPanel(SharpLib.Display.View aView, TableLayoutPanel aPanel)

         {

             Debug.Print("UpdateTableLayoutPanel");

             if (aView == null)

             {

                 //Just drop it

                 return;

             }

             TableLayout layout = aView.Layout;

             //First clean our current panel

             ClearLayout(aPanel);

             //Then recreate our rows...

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

             {

                 aPanel.RowCount++;

             }

             // ...and columns 

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

             {

                 aPanel.ColumnCount++;

             }

             //For each column

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

             {

                 //Create our column styles

                 aPanel.ColumnStyles.Add(layout.Columns[i]);

                 //For each rows

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

                 {

                     if (i == 0)

                     {

                         //Create our row styles

                         aPanel.RowStyles.Add(layout.Rows[j]);

                     }

                     else

                     {

                         continue;

                     }

                 }

             }

             //For each field

             foreach (DataField field in aView.Fields)

             {

                 if (!field.IsTableField)

                 {

                     //That field is not taking part in our table layout skip it

                     continue;

                 }

                 TableField tableField = (TableField) field;

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

                 Control control = CreateControlForDataField(tableField);

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

                 aPanel.Controls.Add(control, tableField.Column, tableField.Row);

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

                 aPanel.SetColumnSpan(control, tableField.ColumnSpan);

                 aPanel.SetRowSpan(control, tableField.RowSpan);

             }

             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.IsTextField)

             {

                 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;

                 label.OwnTimer = false;

                 label.PixelsPerSecond = cds.ScrollingSpeedInPixelsPerSecond;

                 label.Separator = cds.Separator;

                 label.MinFontSize = cds.MinFontSize;

                 label.ScaleToFit = cds.ScaleToFit;

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

                 //control.TabIndex = 2;

                 label.Font = cds.Font;

                 TextField field = (TextField)aField;

                 label.TextAlign = field.Alignment;

                 label.UseCompatibleTextRendering = true;

                 label.Text = field.Text;

                 //

                 control = label;

             }

             else if (aField.IsBitmapField)

             {

                 //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

                 BitmapField field = (BitmapField)aField;

                 picture.Image = field.Bitmap;

                 //

                 control = picture;

             }

             else if (aField is AudioVisualizerField)

             {

                 //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;

                 // Make sure visualization is running

                 iAudioManager.AddVisualizer();

                 // Notify audio manager when we don't need audio visualizer anymore

                 picture.Disposed += (sender, e) =>

                 {

                     if (iAudioManager != null)

                     {

                         // Make sure we stop visualization when not needed

                         iAudioManager.RemoveVisualizer();

                     }

                 };

                 // Create a new bitmap when control size changes

                 picture.SizeChanged += (sender, e) =>

                 {

                     // Somehow bitmap created when our from is invisible are not working

                     // Mark our form visibility status

                     bool visible = Visible;

                     // Make sure it's visible

                     Visible = true;

                     // Adjust our bitmap size when control size changes

                     picture.Image = new System.Drawing.Bitmap(picture.Width, picture.Height, PixelFormat.Format32bppArgb);

                     // Restore our form visibility

                     Visible = visible;

                 };

                 control = picture;

             }

             //TODO: Handle recording field?

             return control;

         }

         /// <summary>

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

         /// </summary>

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

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

         private void comboBoxDisplayType_SelectedIndexChanged(object sender, EventArgs e)

         {

             //Store the selected display type in our settings

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

             cds.DisplayType = comboBoxDisplayType.SelectedIndex;

             Properties.Settings.Default.Save();

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

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

             if (iDisplay.IsOpen())

             {

                 OpenDisplayConnection();

             }

             else

             {

                 UpdateStatus();

             }

         }

         private void maskedTextBoxTimerInterval_TextChanged(object sender, EventArgs e)

         {

             if (maskedTextBoxTimerInterval.Text != "")

             {

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

                 if (interval > 0)

                 {

                     iTimerDisplay.Interval = interval;

                     cds.TimerInterval = iTimerDisplay.Interval;

                     Properties.Settings.Default.Save();

                 }

             }

         }

         private void maskedTextBoxMinFontSize_TextChanged(object sender, EventArgs e)

         {

             if (maskedTextBoxMinFontSize.Text != "")

             {

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

                 if (minFontSize > 0)

                 {

                     cds.MinFontSize = minFontSize;

                     Properties.Settings.Default.Save();

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

                     if (iCurrentClientData != null)

                     {

                         UpdateTableLayoutPanel(iCurrentClientData.View, iTableLayoutPanelCurrentClient);

                     }

                 }

             }

         }

         private void maskedTextBoxScrollingSpeed_TextChanged(object sender, EventArgs e)

         {

             if (maskedTextBoxScrollingSpeed.Text != "")

             {

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

                 if (scrollingSpeed > 0)

                 {

                     cds.ScrollingSpeedInPixelsPerSecond = scrollingSpeed;

                     Properties.Settings.Default.Save();

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

                     if (iCurrentClientData != null)

                     {

                         UpdateTableLayoutPanel(iCurrentClientData.View, iTableLayoutPanelCurrentClient);

                     }

                 }

             }

         }

         /// <summary>

         /// 

         /// </summary>

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

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

         private void textBoxScrollLoopSeparator_TextChanged(object sender, EventArgs e)

         {

             cds.Separator = textBoxScrollLoopSeparator.Text;

             Properties.Settings.Default.Save();

             //Update our text fields

             UpdateMarqueesSeparator(iTableLayoutPanelDisplay);

         }

         private void buttonPowerOn_Click(object sender, EventArgs e)

         {

             iDisplay.PowerOn();

         }

         private void buttonPowerOff_Click(object sender, EventArgs e)

         {

             iDisplay.PowerOff();

         }

         private void buttonShowClock_Click(object sender, EventArgs e)

         {

             ShowClock();

         }

         private void buttonHideClock_Click(object sender, EventArgs e)

         {

             HideClock();

         }

         private void buttonUpdate_Click(object sender, EventArgs e)

         {

             InstallUpdateSyncWithInfo();

         }

         /// <summary>

         /// 

         /// </summary>

         void ShowClock()

         {

             if (!iDisplay.IsOpen())

             {

                 return;

             }

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

             iSkipFrameRendering = true;

             //Clear our screen 

             iDisplay.Clear();

             iDisplay.SwapBuffers();

             //Then show our clock

             iDisplay.ShowClock();

         }

         /// <summary>

         /// 

         /// </summary>

         void HideClock()

         {

             if (!iDisplay.IsOpen())

             {

                 return;

             }

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

             iSkipFrameRendering = false;

             iDisplay.HideClock();

         }

         private void InstallUpdateSyncWithInfo()

         {

             UpdateCheckInfo info = null;

             if (ApplicationDeployment.IsNetworkDeployed)

             {

                 ApplicationDeployment ad = ApplicationDeployment.CurrentDeployment;

                 try

                 {

                     info = ad.CheckForDetailedUpdate();

                 }

                 catch (DeploymentDownloadException dde)

                 {

                     MessageBox.Show(

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

                         dde.Message);

                     return;

                 }

                 catch (InvalidDeploymentException ide)

                 {

                     MessageBox.Show(

                         "Cannot check for a new version of the application. The ClickOnce deployment is corrupt. Please redeploy the application and try again. Error: " +

                         ide.Message);

                     return;

                 }

                 catch (InvalidOperationException ioe)

                 {

                     MessageBox.Show(

                         "This application cannot be updated. It is likely not a ClickOnce application. Error: " +

                         ioe.Message);

                     return;

                 }

                 if (info.UpdateAvailable)

                 {

                     Boolean doUpdate = true;

                     if (!info.IsUpdateRequired)

                     {

                         DialogResult dr =

                             MessageBox.Show("An update is available. Would you like to update the application now?",

                                 "Update Available", MessageBoxButtons.OKCancel);

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

                         {

                             doUpdate = false;

                         }

                     }

                     else

                     {