Implemented screen lock for PPC.

18 files changed, 394 insertions, 15 deletions

diff --git a/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Dialogs/JobCreationView.xaml b/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Dialogs/JobCreationView.xaml
index 0e4f6e38c..cecdf813c 100644
--- a/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Dialogs/JobCreationView.xaml
+++ b/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Dialogs/JobCreationView.xaml
@@ -65,7 +65,9 @@
                 
                 <Grid>
                     <Rectangle HorizontalAlignment="Stretch" VerticalAlignment="Top" Margin="70 0" StrokeThickness="1" Stroke="{StaticResource TangoDividerBrush}" />
-                    <touch:TouchStaticListBox Margin="0 -40 0 0" VerticalAlignment="Center" Width="440" ItemsSource="{Binding SupportedColorSpaces}" SelectedItem="{Binding SelectedColorSpace,Mode=TwoWay}">
+
+                    <Grid Margin="-20 -40 -20 0">
+                        <touch:TouchStaticListBox VerticalAlignment="Center" ItemsSource="{Binding SupportedColorSpaces}" SelectedItem="{Binding SelectedColorSpace,Mode=TwoWay}">
                         <touch:TouchStaticListBox.ItemsPanel>
                             <ItemsPanelTemplate>
                                 <UniformGrid Rows="1" />
@@ -96,6 +98,7 @@
                             </DataTemplate>
                         </touch:TouchStaticListBox.ItemTemplate>
                     </touch:TouchStaticListBox>
+                    </Grid>
                 </Grid>
             </UniformGrid>
         </DockPanel>
diff --git a/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/ViewModels/JobViewVM.cs b/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/ViewModels/JobViewVM.cs
index c7946ee6a..713dfce42 100644
--- a/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/ViewModels/JobViewVM.cs
+++ b/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/ViewModels/JobViewVM.cs
@@ -31,6 +31,9 @@ using Tango.Logging;
 using Tango.PPC.Common.Messages;
 using Tango.BL.Builders;
 using Tango.PPC.Jobs.AppButtons;
+using Tango.Core.Threading;
+using System.Diagnostics;
+using System.Runtime.ExceptionServices;
 
 namespace Tango.PPC.Jobs.ViewModels
 {
@@ -47,6 +50,7 @@ namespace Tango.PPC.Jobs.ViewModels
         private JobNavigationIntent _job_to_load_intent;
         private static Dictionary<String, List<FineTuneItem>> _jobs_fine_tune_items;
         private StartPrintingButton _start_printing_btn;
+        private ActionTimer _volumeConversionTimer;
 
         #region Properties
 
@@ -319,6 +323,8 @@ namespace Tango.PPC.Jobs.ViewModels
         /// </summary>
         public JobViewVM()
         {
+            _volumeConversionTimer = new ActionTimer(TimeSpan.FromMilliseconds(50));
+
             RegisterForMessage<JobSelectedMessage>(HandleJobSelectedMessage);
 
             FineTuneItems = new ObservableCollection<FineTuneItem>();
@@ -426,6 +432,11 @@ namespace Tango.PPC.Jobs.ViewModels
                     Customers = await _db.Customers.Where(x => x.OrganizationGuid == MachineProvider.Machine.OrganizationGuid).ToListAsync();
                     TwineCatalogItems = await _db.ColorCatalogs.Where(x => x.RmlGuid == Job.Rml.Guid && x.ColorSpace.Code == (int)BL.Enumerations.ColorSpaces.Twine).OrderBy(x => x.Name).ToListAsync();
 
+                    foreach (var segment in Job.Segments)
+                    {
+                        SetSegmentLiquidVolumesIfVolume(segment);
+                    }
+
                     if (!_check_gamut_thread.IsAlive)
                     {
                         _check_gamut_thread.Start();
@@ -601,7 +612,9 @@ namespace Tango.PPC.Jobs.ViewModels
             try
             {
                 LogManager.Log("Adding new solid segment...");
-                return Job.AddSolidSegment(MachineProvider.Machine.DefaultSegmentLength > 0 ? MachineProvider.Machine.DefaultSegmentLength : 10);
+                var s = Job.AddSolidSegment(MachineProvider.Machine.DefaultSegmentLength > 0 ? MachineProvider.Machine.DefaultSegmentLength : 10);
+                SetSegmentLiquidVolumesIfVolume(s);
+                return s;
             }
             catch (Exception ex)
             {
@@ -619,7 +632,9 @@ namespace Tango.PPC.Jobs.ViewModels
             try
             {
                 LogManager.Log("Adding new gradient segment...");
-                return Job.AddGradientSegment(MachineProvider.Machine.DefaultSegmentLength > 0 ? MachineProvider.Machine.DefaultSegmentLength : 10);
+                var s = Job.AddGradientSegment(MachineProvider.Machine.DefaultSegmentLength > 0 ? MachineProvider.Machine.DefaultSegmentLength : 10);
+                SetSegmentLiquidVolumesIfVolume(s);
+                return s;
             }
             catch (Exception ex)
             {
@@ -683,6 +698,18 @@ namespace Tango.PPC.Jobs.ViewModels
             }
         }
 
+        /// <summary>
+        /// Sets the segment liquid volumes.
+        /// </summary>
+        /// <param name="segment">The segment.</param>
+        private void SetSegmentLiquidVolumesIfVolume(Segment segment)
+        {
+            if (Job.ColorSpace.Code == BL.Enumerations.ColorSpaces.Volume.ToInt32())
+            {
+                segment.BrushStops.ToList().ForEach(x => x.SetLiquidVolumes(Job.Machine.Configuration, Job.Rml, Job.Rml.GetActiveProcessGroup().ProcessParametersTables.FirstOrDefault()));
+            }
+        }
+
         #endregion
 
         #region Brush Stops Management
@@ -695,6 +722,7 @@ namespace Tango.PPC.Jobs.ViewModels
         {
             LogManager.Log($"Adding new brush stop to segment {segment.SegmentIndex}.");
             segment.AddBrushStop();
+            SetSegmentLiquidVolumesIfVolume(segment);
         }
 
         /// <summary>
@@ -764,13 +792,35 @@ namespace Tango.PPC.Jobs.ViewModels
         /// <summary>
         /// Called when the brush stop field value has been changed (This called from the view!).
         /// </summary>
-        /// <param name="brushStop">The brush stop.</param>
-        public void OnBrushStopFieldValueChanged(BrushStop brushStop)
+        /// <param name="stop">The brush stop.</param>
+        [HandleProcessCorruptedStateExceptions]
+        public void OnBrushStopFieldValueChanged(BrushStop stop)
         {
-            if (brushStop != null)
+            if (stop != null)
             {
-                brushStop.Corrected = false;
-                brushStop.OutOfGamutChecked = false;
+                stop.Corrected = false;
+                stop.OutOfGamutChecked = false;
+
+                if (stop.BrushColorSpace == BL.Enumerations.ColorSpaces.Volume)
+                {
+                    _volumeConversionTimer.ResetReplace(() =>
+                    {
+                        try
+                        {
+                            var output = TangoColorConverter.GetSuggestions(stop);
+
+                            stop.Red = output.SingleCoordinates.Red;
+                            stop.Green = output.SingleCoordinates.Green;
+                            stop.Blue = output.SingleCoordinates.Blue;
+                            stop.Corrected = true;
+                            stop.IsOutOfGamut = false;
+                        }
+                        catch (Exception ex)
+                        {
+                            LogManager.Log(ex, "An error occurred while trying to get volume => RGB from conversion engine.");
+                        }
+                    });
+                }
             }
         }
 
diff --git a/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/ViewModels/JobsViewVM.cs b/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/ViewModels/JobsViewVM.cs
index 86c53440e..bd6f95d44 100644
--- a/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/ViewModels/JobsViewVM.cs
+++ b/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/ViewModels/JobsViewVM.cs
@@ -378,7 +378,7 @@ namespace Tango.PPC.Jobs.ViewModels
 
                 JobCreationViewVM vm = new JobCreationViewVM(
                     machine.SupportedJobTypes.Count > 0 ? machine.SupportedJobTypes : Enum.GetValues(typeof(JobTypes)).Cast<JobTypes>().ToList(),
-                    machine.SupportedColorSpaces.Count > 0 ? machine.SupportedColorSpaces : Enum.GetValues(typeof(ColorSpaces)).Cast<ColorSpaces>().Where(x => x.IsUserSpace()).ToList()
+                    machine.SupportedColorSpaces.Count > 0 ? machine.SupportedColorSpaces : Enum.GetValues(typeof(ColorSpaces)).Cast<ColorSpaces>().Where(x => x.IsUserSpace() || (ApplicationManager.IsInTechnicianMode && x == ColorSpaces.Volume)).ToList()
                     );
 
                 var settings = SettingsManager.Default.GetOrCreate<JobsModuleSettings>();
diff --git a/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Views/JobView.xaml b/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Views/JobView.xaml
index 02e4cb6eb..75c4e9578 100644
--- a/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Views/JobView.xaml
+++ b/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Views/JobView.xaml
@@ -25,7 +25,7 @@
         <BitmapImage x:Key="Image_Out_Of_Gamut" UriSource="../Images/JobView/error.png" />
         <BitmapImage x:Key="Image_Replace_Color" UriSource="../Images/JobView/replace-color.png" />
         <BitmapImage x:Key="Image_Color_Picker" UriSource="../Images/JobView/color-picker.png" />
-        
+
 
         <Style TargetType="FrameworkElement" x:Key="Level1Container">
             <Setter Property="Margin" Value="20 15 60 15"></Setter>
@@ -37,6 +37,42 @@
             <Setter Property="Margin" Value="80 40 60 0"></Setter>
         </Style>
 
+        <DataTemplate x:Key="Volume_Template" DataType="{x:Type entities:BrushStop}">
+            <Grid>
+                <ItemsControl ItemsSource="{Binding LiquidVolumes}" VerticalAlignment="Center" Margin="0 0 -90 0">
+                    <ItemsControl.ItemsPanel>
+                        <ItemsPanelTemplate>
+                            <StackPanel VerticalAlignment="Center" Orientation="Horizontal" IsItemsHost="True"></StackPanel>
+                        </ItemsPanelTemplate>
+                    </ItemsControl.ItemsPanel>
+                    <ItemsControl.ItemTemplate>
+                        <DataTemplate>
+                            <Border>
+                                <Border.Style>
+                                    <Style TargetType="Border">
+                                        <Setter Property="Visibility" Value="Visible"></Setter>
+                                        <Style.Triggers>
+                                            <DataTrigger Binding="{Binding IdsPack.IdsPackFormula.Name}" Value="Lubricant">
+                                                <Setter Property="Visibility" Value="Collapsed"></Setter>
+                                            </DataTrigger>
+                                            <DataTrigger Binding="{Binding IdsPack.IdsPackFormula.Name}" Value="Cleaner">
+                                                <Setter Property="Visibility" Value="Collapsed"></Setter>
+                                            </DataTrigger>
+                                        </Style.Triggers>
+                                    </Style>
+                                </Border.Style>
+                                <touch:TouchNumericTextBox DisplayWatermarkHint="True" Width="50" Watermark="{Binding IdsPack.LiquidType.Name,IsAsync=True}" Margin="2 0" ValueChanged="OnLiquidVolumeFieldValueChanged" HorizontalContentAlignment="Center" Value="{Binding Volume}" keyboard:KeyboardView.Container="{Binding ElementName=Container}" HasDecimalPoint="True" Minimum="0" Maximum="100" JoggingFactor="0.5" StringFormat="0.00"  />
+                            </Border>
+                        </DataTemplate>
+                    </ItemsControl.ItemTemplate>
+                </ItemsControl>
+
+                <Canvas VerticalAlignment="Bottom" Visibility="{Binding IsLiquidVolumesOutOfRange,Converter={StaticResource BooleanToVisibilityConverter}}">
+                    <controls:FastTextBlock Canvas.Top="2" Foreground="{StaticResource TangoErrorBrush}" FontSize="{StaticResource TangoSmallFontSize}" Text="Liquid volumes are out of range."></controls:FastTextBlock>
+                </Canvas>
+            </Grid>
+        </DataTemplate>
+
         <DataTemplate x:Key="RGB_Template" DataType="{x:Type entities:BrushStop}">
             <UniformGrid Rows="1" Columns="3">
                 <touch:TouchNumericTextBox Margin="2 0" ValueChanged="OnBrushStopFieldValueChanged" HorizontalContentAlignment="Center" Value="{Binding Red}" keyboard:KeyboardView.Container="{Binding ElementName=Container}" Maximum="255" />
@@ -120,6 +156,9 @@
                                         <DataTrigger Binding="{Binding ElementName=view,Path=DataContext.Job.ColorSpace.Name,IsAsync=True}" Value="Twine">
                                             <Setter Property="ContentTemplate" Value="{StaticResource TWINE_Template}" />
                                         </DataTrigger>
+                                        <DataTrigger Binding="{Binding ElementName=view,Path=DataContext.Job.ColorSpace.Name,IsAsync=True}" Value="Volume">
+                                            <Setter Property="ContentTemplate" Value="{StaticResource Volume_Template}" />
+                                        </DataTrigger>
                                     </Style.Triggers>
                                 </Style>
                             </ContentControl.Style>
@@ -258,6 +297,9 @@
                                                                     <DataTrigger Binding="{Binding ElementName=view,Path=DataContext.Job.ColorSpace.Name,IsAsync=True}" Value="Twine">
                                                                         <Setter Property="ContentTemplate" Value="{StaticResource TWINE_Template}" />
                                                                     </DataTrigger>
+                                                                    <DataTrigger Binding="{Binding ElementName=view,Path=DataContext.Job.ColorSpace.Name,IsAsync=True}" Value="Volume">
+                                                                        <Setter Property="ContentTemplate" Value="{StaticResource Volume_Template}" />
+                                                                    </DataTrigger>
                                                                 </Style.Triggers>
                                                             </Style>
                                                         </ContentControl.Style>
@@ -385,7 +427,7 @@
                 <Grid.CacheMode>
                     <BitmapCache RenderAtScale="1" SnapsToDevicePixels="False" />
                 </Grid.CacheMode>
-                
+
                 <Grid.RowDefinitions>
                     <RowDefinition Height="1*"/>
                     <RowDefinition Height="Auto"/>
diff --git a/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Views/JobView.xaml.cs b/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Views/JobView.xaml.cs
index 6a6e770a7..3cd6e1bce 100644
--- a/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Views/JobView.xaml.cs
+++ b/Software/Visual_Studio/PPC/Modules/Tango.PPC.Jobs/Views/JobView.xaml.cs
@@ -13,6 +13,7 @@ using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using System.Windows.Navigation;
 using System.Windows.Shapes;
+using Tango.BL;
 using Tango.BL.Entities;
 using Tango.Core.DI;
 using Tango.PPC.Jobs.ViewContracts;
@@ -111,5 +112,15 @@ namespace Tango.PPC.Jobs.Views
             borderDockFloat.Child = dockEdit;
             borderEditDock.Visibility = Visibility.Collapsed;
         }
+
+        private void OnLiquidVolumeFieldValueChanged(object sender, Touch.Controls.DoubleValueChangedEventArgs e)
+        {
+            var liquidVolume = (sender as FrameworkElement).DataContext as LiquidVolume;
+
+            if (liquidVolume != null)
+            {
+                _vm.OnBrushStopFieldValueChanged(liquidVolume.BrushStop);
+            }
+        }
     }
 }
diff --git a/Software/Visual_Studio/PPC/Modules/Tango.PPC.MachineSettings/ViewModels/MainViewVM.cs b/Software/Visual_Studio/PPC/Modules/Tango.PPC.MachineSettings/ViewModels/MainViewVM.cs
index c858e982e..b413fee0d 100644
--- a/Software/Visual_Studio/PPC/Modules/Tango.PPC.MachineSettings/ViewModels/MainViewVM.cs
+++ b/Software/Visual_Studio/PPC/Modules/Tango.PPC.MachineSettings/ViewModels/MainViewVM.cs
@@ -86,6 +86,27 @@ namespace Tango.PPC.MachineSettings.ViewModels
             set { _enableRemoteAssistance = value; RaisePropertyChangedAuto(); OnEnableRemoteAssistanceChanged(); }
         }
 
+        private bool _enableLockScreen;
+        public bool EnableLockScreen
+        {
+            get { return _enableLockScreen; }
+            set { _enableLockScreen = value; RaisePropertyChangedAuto(); }
+        }
+
+        private int _lockScreenTimeoutMinutes;
+        public int LockScreenTimeoutMinutes
+        {
+            get { return _lockScreenTimeoutMinutes; }
+            set { _lockScreenTimeoutMinutes = value; RaisePropertyChangedAuto(); }
+        }
+
+        private String _lockScreenPassword;
+        public String LockScreenPassword
+        {
+            get { return _lockScreenPassword; }
+            set { _lockScreenPassword = value; RaisePropertyChangedAuto(); }
+        }
+
         #endregion
 
         #region Commands
@@ -125,6 +146,9 @@ namespace Tango.PPC.MachineSettings.ViewModels
                 Settings.HotSpotPassword = HotSpotPassword;
                 Settings.EnableExternalBridge = EnableExternalBridge;
                 Settings.ExternalBridgePassword = ExternalBridgePassword;
+                Settings.EnableLockScreen = EnableLockScreen;
+                Settings.LockScreenTimeout = TimeSpan.FromMinutes(LockScreenTimeoutMinutes);
+                Settings.LockScreenPassword = LockScreenPassword;
                 Settings.Save();
 
                 await MachineProvider.SaveMachine();
@@ -166,6 +190,9 @@ namespace Tango.PPC.MachineSettings.ViewModels
             _enableRemoteAssistance = RemoteAssistanceProvider.IsEnabled;
             RaisePropertyChanged(nameof(EnableRemoteAssistance));
 
+            EnableLockScreen = Settings.EnableLockScreen;
+            LockScreenTimeoutMinutes = (int)Settings.LockScreenTimeout.TotalMinutes;
+            LockScreenPassword = Settings.LockScreenPassword;
 
             SelectedJobTypes = new SelectedObjectCollection<JobTypes>(Enum.GetValues(typeof(JobTypes)).Cast<JobTypes>().ToObservableCollection(), Machine.SupportedJobTypes.ToObservableCollection());
             SelectedColorSpaces = new SelectedObjectCollection<ColorSpaces>(Enum.GetValues(typeof(ColorSpaces)).Cast<ColorSpaces>().Where(x => x.IsUserSpace()).ToObservableCollection(), Machine.SupportedColorSpaces.ToObservableCollection());
diff --git a/Software/Visual_Studio/PPC/Modules/Tango.PPC.MachineSettings/Views/MainView.xaml b/Software/Visual_Studio/PPC/Modules/Tango.PPC.MachineSettings/Views/MainView.xaml
index 4f846a46d..dd5f89bb2 100644
--- a/Software/Visual_Studio/PPC/Modules/Tango.PPC.MachineSettings/Views/MainView.xaml
+++ b/Software/Visual_Studio/PPC/Modules/Tango.PPC.MachineSettings/Views/MainView.xaml
@@ -11,7 +11,7 @@
              xmlns:global="clr-namespace:Tango.PPC.MachineSettings"
              xmlns:local="clr-namespace:Tango.PPC.MachineSettings.Views"
              mc:Ignorable="d" 
-             d:DesignHeight="2000" d:DesignWidth="800" d:DataContext="{d:DesignInstance Type=vm:MainViewVM, IsDesignTimeCreatable=False}" DataContext="{x:Static global:ViewModelLocator.MainViewVM}">
+             d:DesignHeight="2500" d:DesignWidth="800" d:DataContext="{d:DesignInstance Type=vm:MainViewVM, IsDesignTimeCreatable=False}" DataContext="{x:Static global:ViewModelLocator.MainViewVM}">
 
     <Grid Background="{StaticResource TangoMidBackgroundBrush}">
         <Grid.RowDefinitions>
@@ -172,6 +172,29 @@
                                         </DockPanel>
                                     </StackPanel>
                                 </touch:TouchExpander>
+
+                                <!--LOCK SCREEN-->
+                                <touch:TouchExpander Margin="0 20 0 0" Header="Lock Screen" IsExpanded="True" FontSize="{StaticResource TangoExpanderHeaderFontSize}">
+                                    <StackPanel>
+                                        <controls:TableGrid Margin="10" RowHeight="60" MakeFirstColumnVerticalAlignmentBottom="False" TextElement.FontSize="{StaticResource TangoDefaultFontSize}">
+                                            <TextBlock VerticalAlignment="Center">Enable Lock Screen</TextBlock>
+                                            <touch:TouchToggleSlider Style="{StaticResource TangoToggleButtonGrayAccent}" HorizontalAlignment="Right" Margin="0 0 110 0" Width="90" IsChecked="{Binding EnableLockScreen}"></touch:TouchToggleSlider>
+
+                                            <TextBlock VerticalAlignment="Bottom">Lock Screen Timeout (m)</TextBlock>
+                                            <touch:TouchNumericTextBox HorizontalAlignment="Right" VerticalAlignment="Bottom" Width="200" Minimum="1" Maximum="60" Value="{Binding LockScreenTimeoutMinutes}" HasDecimalPoint="False" KeyboardContainer="{Binding ElementName=Container}"></touch:TouchNumericTextBox>
+
+                                            <TextBlock VerticalAlignment="Bottom">Lock Screen Password</TextBlock>
+                                            <touch:TouchTextBox IsPassword="True" Watermark="•••••••" HorizontalAlignment="Right" VerticalAlignment="Bottom" Width="200" Text="{Binding LockScreenPassword}" KeyboardContainer="{Binding ElementName=Container}"></touch:TouchTextBox>
+                                        </controls:TableGrid>
+
+                                        <DockPanel Margin="10 -50 0 0">
+                                            <touch:TouchIcon VerticalAlignment="Top" Icon="InformationOutline" Foreground="{StaticResource TangoGrayTextBrush}"></touch:TouchIcon>
+                                            <TextBlock Margin="10 0 0 0" VerticalAlignment="Top" TextWrapping="Wrap" FontSize="{StaticResource TangoSmallFontSize}" Foreground="{StaticResource TangoGrayTextBrush}">
+                                                Enable the lock screen to protect the panel from unauthorized access.
+                                            </TextBlock>
+                                        </DockPanel>
+                                    </StackPanel>
+                                </touch:TouchExpander>
                             </StackPanel>
                         </touch:LightTouchScrollViewer>
                     </Grid>
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.Common/Application/IPPCApplicationManager.cs b/Software/Visual_Studio/PPC/Tango.PPC.Common/Application/IPPCApplicationManager.cs
index 2d76b202f..5f58be48b 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.Common/Application/IPPCApplicationManager.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.Common/Application/IPPCApplicationManager.cs
@@ -94,5 +94,20 @@ namespace Tango.PPC.Common.Application
         /// Gets the application build date.
         /// </summary>
         String BuildDate { get; }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether the screen is currently locked.
+        /// </summary>
+        bool IsScreenLocked { get; set; }
+
+        /// <summary>
+        /// Resets the screen lock timer.
+        /// </summary>
+        void ResetScreenLockTimer();
+
+        /// <summary>
+        /// Invokes a dialog for entering a password and releasing the screen lock.
+        /// </summary>
+        void ReleaseScreenLock();
     }
 }
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.Common/PPCSettings.cs b/Software/Visual_Studio/PPC/Tango.PPC.Common/PPCSettings.cs
index 698dbf374..050f1615c 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.Common/PPCSettings.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.Common/PPCSettings.cs
@@ -98,6 +98,21 @@ namespace Tango.PPC.Common
         public int GradientGenerationResolution { get; set; }
 
         /// <summary>
+        /// Gets or sets a value indicating whether to enable the application lock screen.
+        /// </summary>
+        public bool EnableLockScreen { get; set; }
+
+        /// <summary>
+        /// Gets or sets the lock screen timeout.
+        /// </summary>
+        public TimeSpan LockScreenTimeout { get; set; }
+
+        /// <summary>
+        /// Gets or sets the lock screen password.
+        /// </summary>
+        public String LockScreenPassword { get; set; }
+
+        /// <summary>
         /// Gets the machine service address.
         /// </summary>
         /// <returns></returns>
@@ -119,6 +134,8 @@ namespace Tango.PPC.Common
             EmbeddedComPort = null;
             ExternalBridgePassword = "Aa123456";
             HotSpotPassword = "Aa123456";
+            LockScreenTimeout = TimeSpan.FromMinutes(10);
+            LockScreenPassword = "1111";
             DeploymentSlot = DeploymentSlot.TEST;
             EnableWatchDog = true;
         }
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/ScreenLockView.xaml b/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/ScreenLockView.xaml
new file mode 100644
index 000000000..8a90b03a0
--- /dev/null
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/ScreenLockView.xaml
@@ -0,0 +1,30 @@
+<UserControl x:Class="Tango.PPC.UI.Dialogs.ScreenLockView"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+              xmlns:local="clr-namespace:Tango.PPC.UI.Dialogs"
+             xmlns:touch="clr-namespace:Tango.Touch.Controls;assembly=Tango.Touch"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             mc:Ignorable="d" 
+             Background="{StaticResource TangoPrimaryBackgroundBrush}"  d:DesignHeight="555" d:DesignWidth="560" Width="600" Height="250" d:DataContext="{d:DesignInstance Type=local:ScreenLockViewVM, IsDesignTimeCreatable=False}">
+
+    <UserControl.InputBindings>
+        <KeyBinding Key="Return" Command="{Binding OKCommand}"></KeyBinding>
+    </UserControl.InputBindings>
+    <Grid Margin="10">
+        <DockPanel>
+            <StackPanel DockPanel.Dock="Bottom" HorizontalAlignment="Right" Orientation="Horizontal">
+                <touch:TouchButton Command="{Binding CloseCommand}" Style="{StaticResource TangoMessageBoxButton}" DockPanel.Dock="Right" Width="120" Height="50" VerticalAlignment="Bottom">CANCEL</touch:TouchButton>
+                <touch:TouchButton Command="{Binding OKCommand}" Style="{StaticResource TangoMessageBoxButton}" DockPanel.Dock="Right" Width="120" Height="50" VerticalAlignment="Bottom">OK</touch:TouchButton>
+            </StackPanel>
+            <DockPanel>
+                <touch:TouchIcon Foreground="{StaticResource TangoErrorBrush}" Icon="Lock" VerticalAlignment="Top" Height="70"></touch:TouchIcon>
+                <StackPanel Margin="10 0 0 0">
+                    <TextBlock FontSize="{StaticResource TangoHeaderFontSize}">Screen Locked</TextBlock>
+                    <TextBlock Margin="0 10 0 0" TextWrapping="Wrap">Please enter the password to unlock the screen.</TextBlock>
+                    <touch:TouchTextBox x:Name="txtPassword" Margin="0 30 40 0" IsPassword="True" KeyboardAction="Go" Text="{Binding Password,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" />
+                </StackPanel>
+            </DockPanel>
+        </DockPanel>
+    </Grid>
+</UserControl>
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/ScreenLockView.xaml.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/ScreenLockView.xaml.cs
new file mode 100644
index 000000000..4a28984e6
--- /dev/null
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/ScreenLockView.xaml.cs
@@ -0,0 +1,36 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace Tango.PPC.UI.Dialogs
+{
+    /// <summary>
+    /// Interaction logic for TechnicianModeLoginView.xaml
+    /// </summary>
+    public partial class ScreenLockView : UserControl
+    {
+        public ScreenLockView()
+        {
+            InitializeComponent();
+
+            Loaded += ScreenLockView_Loaded;
+        }
+
+        private async void ScreenLockView_Loaded(object sender, RoutedEventArgs e)
+        {
+            await Task.Delay(200);
+            txtPassword.Focus();
+        }
+    }
+}
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/ScreenLockViewVM.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/ScreenLockViewVM.cs
new file mode 100644
index 000000000..e19117621
--- /dev/null
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/ScreenLockViewVM.cs
@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Tango.SharedUI;
+
+namespace Tango.PPC.UI.Dialogs
+{
+    public class ScreenLockViewVM : DialogViewVM
+    {
+        private String _password;
+        public String Password
+        {
+            get { return _password; }
+            set { _password = value; RaisePropertyChangedAuto(); }
+        }
+    }
+}
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/TechnicianModeLoginView.xaml b/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/TechnicianModeLoginView.xaml
index ca53d6027..24a5416ba 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/TechnicianModeLoginView.xaml
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/TechnicianModeLoginView.xaml
@@ -7,6 +7,11 @@
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              mc:Ignorable="d" 
              Background="{StaticResource TangoPrimaryBackgroundBrush}"  d:DesignHeight="555" d:DesignWidth="560" Width="600" Height="250" d:DataContext="{d:DesignInstance Type=local:TechnicianModeLoginViewVM, IsDesignTimeCreatable=False}">
+
+    <UserControl.InputBindings>
+        <KeyBinding Key="Return" Command="{Binding OKCommand}"></KeyBinding>
+    </UserControl.InputBindings>
+
     <Grid Margin="10">
         <DockPanel>
             <StackPanel DockPanel.Dock="Bottom" HorizontalAlignment="Right" Orientation="Horizontal">
@@ -18,7 +23,7 @@
                 <StackPanel Margin="10 0 0 0">
                     <TextBlock FontSize="{StaticResource TangoHeaderFontSize}">Technician Mode</TextBlock>
                     <TextBlock Margin="0 10 0 0" TextWrapping="Wrap">Please enter the technician mode password.</TextBlock>
-                    <touch:TouchTextBox Margin="0 30 40 0" IsPassword="True" Text="{Binding Password,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" />
+                    <touch:TouchTextBox x:Name="txtPassword" KeyboardAction="Go" Margin="0 30 40 0" IsPassword="True" Text="{Binding Password,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" />
                 </StackPanel>
             </DockPanel>
         </DockPanel>
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/TechnicianModeLoginView.xaml.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/TechnicianModeLoginView.xaml.cs
index 02dfed896..3a809b6f3 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/TechnicianModeLoginView.xaml.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Dialogs/TechnicianModeLoginView.xaml.cs
@@ -23,6 +23,14 @@ namespace Tango.PPC.UI.Dialogs
         public TechnicianModeLoginView()
         {
             InitializeComponent();
+
+            Loaded += TechnicianModeLoginView_Loaded;
+        }
+
+        private async void TechnicianModeLoginView_Loaded(object sender, RoutedEventArgs e)
+        {
+            await Task.Delay(200);
+            txtPassword.Focus();
         }
     }
 }
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/PPCApplication/DefaultPPCApplicationManager.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/PPCApplication/DefaultPPCApplicationManager.cs
index ba1b44c8a..1550e97e1 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/PPCApplication/DefaultPPCApplicationManager.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/PPCApplication/DefaultPPCApplicationManager.cs
@@ -29,6 +29,8 @@ using Tango.BL.Enumerations;
 using Tango.PPC.Common.Notifications;
 using Tango.PPC.Common.WatchDog;
 using Tango.PPC.UI.Dialogs;
+using Tango.Core.Threading;
+using Tango.PPC.Common.Messages;
 
 namespace Tango.PPC.UI.PPCApplication
 {
@@ -48,6 +50,7 @@ namespace Tango.PPC.UI.PPCApplication
         private INotificationProvider _notificationProvider;
         private WatchDogServer _watchdogServer;
         private ObservablesContext _machineContext;
+        private ActionTimer _screenLockTimer;
 
         /// <summary>
         /// Occurs when a system restart is required.
@@ -116,6 +119,16 @@ namespace Tango.PPC.UI.PPCApplication
             }
         }
 
+        private bool _isScreenLocked;
+        /// <summary>
+        /// Gets or sets a value indicating whether the screen is currently locked.
+        /// </summary>
+        public bool IsScreenLocked
+        {
+            get { return _isScreenLocked; }
+            set { _isScreenLocked = value; RaisePropertyChangedAuto(); }
+        }
+
         /// <summary>
         /// Initializes a new instance of the <see cref="DefaultPPCApplicationManager"/> class.
         /// </summary>
@@ -306,6 +319,8 @@ namespace Tango.PPC.UI.PPCApplication
         /// </summary>
         private void FinalizeModuleInitialization()
         {
+            var settings = SettingsManager.Default.GetOrCreate<PPCSettings>();
+
             LogManager.Log("Finalizing application initialization...");
 
             LogManager.Log("Initializing Machine Provider...");
@@ -336,10 +351,30 @@ namespace Tango.PPC.UI.PPCApplication
                     vm.OnApplicationReady();
                 }
 
-                if (SettingsManager.Default.GetOrCreate<PPCSettings>().EnableTechnicianModeByDefault)
+                if (settings.EnableTechnicianModeByDefault)
                 {
                     EnterTechnicianMode(false);
                 }
+
+                if (settings.EnableLockScreen)
+                {
+                    _screenLockTimer = new ActionTimer(settings.LockScreenTimeout);
+                    _screenLockTimer.ResetReplace(ScreenLockTimerAction);
+                }
+
+                TangoMessenger.Default.Register<MachineSettingsSavedMessage>((msg) =>
+                {
+                    if (_screenLockTimer != null)
+                    {
+                        _screenLockTimer.Dispose();
+                    }
+
+                    if (settings.EnableLockScreen)
+                    {
+                        _screenLockTimer = new ActionTimer(settings.LockScreenTimeout);
+                        _screenLockTimer.ResetReplace(ScreenLockTimerAction);
+                    }
+                });
             });
         }
 
@@ -460,5 +495,38 @@ namespace Tango.PPC.UI.PPCApplication
             _moduleLoader.AllModules.ToList().ForEach(x => x.OnTechnicianExited());
             _notificationProvider.ShowInfo("Technician mode is now disabled.");
         }
+
+        /// <summary>
+        /// Invokes a dialog for entering a password and releasing the screen lock.
+        /// </summary>
+        public async void ReleaseScreenLock()
+        {
+            if (IsScreenLocked)
+            {
+                var vm = await _notificationProvider.ShowDialog<ScreenLockViewVM>();
+
+                if (vm.DialogResult)
+                {
+                    if (vm.Password == SettingsManager.Default.GetOrCreate<PPCSettings>().LockScreenPassword)
+                    {
+                        IsScreenLocked = false;
+                        ResetScreenLockTimer();
+                    }
+                }
+            }
+        }
+
+        public void ResetScreenLockTimer()
+        {
+            if (_screenLockTimer != null)
+            {
+                _screenLockTimer.ResetReplace(ScreenLockTimerAction);
+            }
+        }
+
+        private void ScreenLockTimerAction()
+        {
+            IsScreenLocked = true;
+        }
     }
 }
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Tango.PPC.UI.csproj b/Software/Visual_Studio/PPC/Tango.PPC.UI/Tango.PPC.UI.csproj
index 22ecff0f6..71fa82504 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/Tango.PPC.UI.csproj
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Tango.PPC.UI.csproj
@@ -122,9 +122,13 @@
     <Compile Include="Connectivity\WiFiAuthenticationViewVM.cs" />
     <Compile Include="Converters\AppBarItemConverter.cs" />
     <Compile Include="Converters\ItemBaseConverter.cs" />
+    <Compile Include="Dialogs\ScreenLockView.xaml.cs">
+      <DependentUpon>ScreenLockView.xaml</DependentUpon>
+    </Compile>
     <Compile Include="Dialogs\TechnicianModeLoginView.xaml.cs">
       <DependentUpon>TechnicianModeLoginView.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Dialogs\ScreenLockViewVM.cs" />
     <Compile Include="Dialogs\TechnicianModeLoginViewVM.cs" />
     <Compile Include="Dialogs\UpdateFromFileView.xaml.cs">
       <DependentUpon>UpdateFromFileView.xaml</DependentUpon>
@@ -186,6 +190,10 @@
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
+    <Page Include="Dialogs\ScreenLockView.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
     <Page Include="Dialogs\TechnicianModeLoginView.xaml">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
@@ -526,7 +534,7 @@ del "$(TargetDir)firmware_package.tfp"</PostBuildEvent>
   </PropertyGroup>
   <ProjectExtensions>
     <VisualStudio>
-      <UserProperties BuildVersion_AssemblyInfoFilename="Properties\AssemblyInfo.cs" BuildVersion_UpdateAssemblyVersion="True" BuildVersion_BuildVersioningStyle="None.None.Increment.TimeStamp" BuildVersion_UseGlobalSettings="False" BuildVersion_StartDate="2000/1/1" />
+      <UserProperties BuildVersion_StartDate="2000/1/1" BuildVersion_UseGlobalSettings="False" BuildVersion_BuildVersioningStyle="None.None.Increment.TimeStamp" BuildVersion_UpdateAssemblyVersion="True" BuildVersion_AssemblyInfoFilename="Properties\AssemblyInfo.cs" />
     </VisualStudio>
   </ProjectExtensions>
 </Project>
\ No newline at end of file
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LayoutView.xaml b/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LayoutView.xaml
index 768fce222..6e820ab64 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LayoutView.xaml
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LayoutView.xaml
@@ -279,7 +279,12 @@
                         <!--MODULES GOES HERE-->
                     </controls:NavigationControl>
                 </Grid>
+                
             </DockPanel>
         </touch:TouchSideMenu>
+
+        <Grid PreviewMouseUp="Grid_PreviewMouseUp" IsHitTestVisible="True" Background="Transparent" Visibility="{Binding ApplicationManager.IsScreenLocked,Converter={StaticResource BooleanToVisibilityConverter}}">
+            <touch:TouchIcon HorizontalAlignment="Right" VerticalAlignment="Bottom" Margin="40" Icon="Lock" Width="60" Height="60" Opacity="0.5" Foreground="{StaticResource TangoSuccessBrush}" />
+        </Grid>
     </Grid>
 </UserControl>
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LayoutView.xaml.cs b/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LayoutView.xaml.cs
index 777083b67..883d3f893 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LayoutView.xaml.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.UI/Views/LayoutView.xaml.cs
@@ -42,6 +42,13 @@ namespace Tango.PPC.UI.Views
             _timer = new DispatcherTimer();
             _timer.Interval = TimeSpan.FromSeconds(10);
             _timer.Tick += _timer_Tick;
+
+            this.PreviewMouseUp += LayoutView_PreviewMouseUp;
+        }
+
+        private void LayoutView_PreviewMouseUp(object sender, MouseButtonEventArgs e)
+        {
+            _vm.ApplicationManager.ResetScreenLockTimer();
         }
 
         private void _timer_Tick(object sender, EventArgs e)
@@ -77,5 +84,10 @@ namespace Tango.PPC.UI.Views
 
             _timer.Stop();
         }
+
+        private void Grid_PreviewMouseUp(object sender, MouseButtonEventArgs e)
+        {
+            _vm.ApplicationManager.ReleaseScreenLock();
+        }
     }
 }