Profile editor - Clarified which LEDs are part of the selected layer

Profile editor - Re-implemented LED dimming
Profile editor - Hide layer bounds of unselected layers
Profile editor - Dim layer shapes of unselected layers (option to hide them NYI)
Profile editor - Disable edit tool when no layer is selected or the selected layer has no LEDs
Gradient picker - Fixed the preview being at a slight angle
Color brush - Fixed the gradient being at a 45 degree angle
Settings - Added color scheme option to manually switch between light and dark

src/Artemis.UI.Shared/Controls/DeviceVisualizer.cs

@@ -1,12 +1,14 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using Artemis.Core.Models.Surface;
 using RGB.NET.Core;
+using Stylet;
 
 namespace Artemis.UI.Shared.Controls
 {
@@ -18,6 +20,9 @@ namespace Artemis.UI.Shared.Controls
         public static readonly DependencyProperty ShowColorsProperty = DependencyProperty.Register(nameof(ShowColors), typeof(bool), typeof(DeviceVisualizer),
             new FrameworkPropertyMetadata(default(bool), FrameworkPropertyMetadataOptions.AffectsRender, ShowColorsPropertyChangedCallback));
 
+        public static readonly DependencyProperty HighlightedLedsProperty = DependencyProperty.Register(nameof(HighlightedLeds), typeof(IEnumerable<ArtemisLed>), typeof(DeviceVisualizer),
+            new FrameworkPropertyMetadata(default(IEnumerable<ArtemisLed>)));
+
         private readonly DrawingGroup _backingStore;
         private readonly List<DeviceVisualizerLed> _deviceVisualizerLeds;
         private BitmapImage _deviceImage;
@@ -57,6 +62,12 @@ namespace Artemis.UI.Shared.Controls
             set => SetValue(ShowColorsProperty, value);
         }
 
+        public IEnumerable<ArtemisLed> HighlightedLeds
+        {
+            get => (IEnumerable<ArtemisLed>) GetValue(HighlightedLedsProperty);
+            set => SetValue(HighlightedLedsProperty, value);
+        }
+
         public void Dispose()
         {
             RGBSurface.Instance.Updated -= RgbSurfaceOnUpdated;
@@ -159,8 +170,17 @@ namespace Artemis.UI.Shared.Controls
         {
             var drawingContext = _backingStore.Open();
 
-            foreach (var deviceVisualizerLed in _deviceVisualizerLeds)
-                deviceVisualizerLed.RenderColor(drawingContext);
+            if (HighlightedLeds.Any())
+            {
+                foreach (var deviceVisualizerLed in _deviceVisualizerLeds)
+                    deviceVisualizerLed.RenderColor(drawingContext, !HighlightedLeds.Contains(deviceVisualizerLed.Led));
+            }
+            else
+            {
+                foreach (var deviceVisualizerLed in _deviceVisualizerLeds)
+                    deviceVisualizerLed.RenderColor(drawingContext, false);
+            }
+            
 
             drawingContext.Close();
         }

src/Artemis.UI.Shared/Controls/DeviceVisualizerLed.cs

@@ -23,11 +23,11 @@ namespace Artemis.UI.Shared.Controls
 
             if (Led.RgbLed.Image != null && File.Exists(Led.RgbLed.Image.AbsolutePath))
                 LedImage = new BitmapImage(Led.RgbLed.Image);
-            
+
             CreateLedGeometry();
         }
 
-        
+
         public ArtemisLed Led { get; }
         public Rect LedRect { get; set; }
         public BitmapImage LedImage { get; set; }
@@ -60,7 +60,6 @@ namespace Artemis.UI.Shared.Controls
             // Stroke geometry is the display geometry excluding the inner geometry
             DisplayGeometry.Transform = new TranslateTransform(Led.RgbLed.LedRectangle.Location.X, Led.RgbLed.LedRectangle.Location.Y);
             // Try to gain some performance
-            DisplayGeometry = DisplayGeometry.GetFlattenedPathGeometry();
             DisplayGeometry.Freeze();
         }
 
@@ -103,7 +102,7 @@ namespace Artemis.UI.Shared.Controls
             }
         }
 
-        public void RenderColor(DrawingContext drawingContext)
+        public void RenderColor(DrawingContext drawingContext, bool isDimmed)
         {
             if (DisplayGeometry == null)
                 return;
@@ -111,8 +110,10 @@ namespace Artemis.UI.Shared.Controls
             var r = Led.RgbLed.Color.GetR();
             var g = Led.RgbLed.Color.GetG();
             var b = Led.RgbLed.Color.GetB();
-
-            drawingContext.DrawRectangle(new SolidColorBrush(Color.FromRgb(r, g, b)), null, LedRect);
+            
+            drawingContext.DrawRectangle(isDimmed
+                ? new SolidColorBrush(Color.FromArgb(100, r, g, b))
+                : new SolidColorBrush(Color.FromRgb(r, g, b)), null, LedRect);
         }
 
         public void RenderImage(DrawingContext drawingContext)

src/Artemis.UI.Shared/Controls/GradientPicker.xaml

@@ -41,7 +41,9 @@
             Background="{StaticResource Checkerboard}">
         <Rectangle Stroke="{DynamicResource NormalBorderBrush}" Cursor="Hand" MouseUp="UIElement_OnMouseUp">
             <Rectangle.Fill>
-                <LinearGradientBrush GradientStops="{Binding ColorGradient.Stops, Mode=OneWay, RelativeSource={RelativeSource AncestorType={x:Type UserControl}}, Converter={StaticResource ColorGradientToGradientStopsConverter}}" />
+                <LinearGradientBrush GradientStops="{Binding ColorGradient.Stops, Mode=OneWay, RelativeSource={RelativeSource AncestorType={x:Type UserControl}}, Converter={StaticResource ColorGradientToGradientStopsConverter}}" 
+                                     EndPoint="1,0"
+                                     StartPoint="0,0"/>
             </Rectangle.Fill>
         </Rectangle>
     </Border>

src/Artemis.UI.Shared/Screens/GradientEditor/GradientEditorView.xaml

@@ -53,7 +53,9 @@
                            utilities:SizeObserver.ObservedWidth="{Binding PreviewWidth, Mode=OneWayToSource}">
                     <Rectangle.Fill>
                         <LinearGradientBrush
-                            GradientStops="{Binding ColorGradient.Stops, Converter={StaticResource ColorGradientToGradientStopsConverter}}" />
+                            GradientStops="{Binding ColorGradient.Stops, Converter={StaticResource ColorGradientToGradientStopsConverter}}" 
+                            EndPoint="1,0"
+                            StartPoint="0,0"/>
                     </Rectangle.Fill>
                 </Rectangle>