Plugin settings window - Updated design

Brushes - Added option for brushes to have a settings window
Effects - Added option for effects to have a settings window

src/Plugins/Artemis.Plugins.LayerBrushes.Noise/NoiseBrush.cs

@@ -102,9 +102,7 @@ namespace Artemis.Plugins.LayerBrushes.Noise
             );
 
             if (Properties.ColorType.BaseValue == ColorMappingType.Simple)
-            {
                 paint.Color = Properties.SecondaryColor.CurrentValue;
-            }
 
             using var foregroundShader = SKShader.CreateBitmap(_bitmap, SKShaderTileMode.Clamp, SKShaderTileMode.Clamp, bitmapTransform);
             paint.Shader = foregroundShader;

src/Plugins/Artemis.Plugins.LayerEffects.Filter/ColorMatrixEffect.cs

@@ -0,0 +1,37 @@
+using Artemis.Core.Plugins.Abstract.ViewModels;
+using Artemis.Core.Plugins.LayerEffect.Abstract;
+using Artemis.Plugins.LayerEffects.Filter.ViewModels;
+using SkiaSharp;
+
+namespace Artemis.Plugins.LayerEffects.Filter
+{
+    public class ColorMatrixEffect : LayerEffect<ColorMatrixEffectProperties>
+    {
+        public override void EnableLayerEffect()
+        {
+            HasConfigurationViewModel = true;
+        }
+
+        public override EffectConfigurationViewModel GetConfigurationViewModel()
+        {
+            return new ColorMatrixConfigurationViewModel(this);
+        }
+
+        public override void DisableLayerEffect()
+        {
+        }
+
+        public override void Update(double deltaTime)
+        {
+        }
+
+        public override void PreProcess(SKCanvas canvas, SKImageInfo canvasInfo, SKPath renderBounds, SKPaint paint)
+        {
+        }
+
+        public override void PostProcess(SKCanvas canvas, SKImageInfo canvasInfo, SKPath renderBounds, SKPaint paint)
+        {
+            paint.ImageFilter = SKImageFilter.CreateColorFilter(SKColorFilter.CreateColorMatrix(Properties.ColorMatrix.CurrentValue), paint.ImageFilter);
+        }
+    }
+}

src/Plugins/Artemis.Plugins.LayerEffects.Filter/ColorMatrixEffectProperties.cs

@@ -0,0 +1,29 @@
+using Artemis.Core.Models.Profile;
+using Artemis.Core.Models.Profile.LayerProperties;
+using Artemis.Core.Models.Profile.LayerProperties.Attributes;
+
+namespace Artemis.Plugins.LayerEffects.Filter
+{
+    public class ColorMatrixEffectProperties : LayerPropertyGroup
+    {
+        [PropertyDescription]
+        public LayerProperty<float[]> ColorMatrix { get; set; }
+
+        protected override void PopulateDefaults()
+        {
+            // Set a gray scale value as default
+            ColorMatrix.DefaultValue = new[]
+            {
+                0.21f, 0.72f, 0.07f, 0, 0,
+                0.21f, 0.72f, 0.07f, 0, 0,
+                0.21f, 0.72f, 0.07f, 0, 0,
+                0,     0,     0,     1, 0
+            };
+        }
+
+        protected override void OnPropertiesInitialized()
+        {
+            ColorMatrix.IsHidden = true;
+        }
+    }
+}

src/Plugins/Artemis.Plugins.LayerEffects.Filter/FilterEffectProvider.cs

@@ -15,6 +15,7 @@ namespace Artemis.Plugins.LayerEffects.Filter
             AddLayerEffectDescriptor<ErodeEffect>("Erode", "A layer effect providing an erode filter effect", "EyeMinus");
             AddLayerEffectDescriptor<GlowEffect>("Glow", "A layer effect providing a glow filter effect", "BoxShadow");
             AddLayerEffectDescriptor<GrayScaleEffect>("Gray-scale", "A layer effect providing a gray-scale filter effect", "InvertColors");
+            AddLayerEffectDescriptor<ColorMatrixEffect>("Color matrix", "A layer effect allowing you to apply a custom color matrix", "Matrix");
         }
 
         public override void DisablePlugin()

src/Plugins/Artemis.Plugins.LayerEffects.Filter/ViewModels/ColorMatrixConfigurationViewModel.cs

@@ -0,0 +1,23 @@
+using System.Diagnostics;
+using Artemis.Core.Plugins.Abstract.ViewModels;
+
+namespace Artemis.Plugins.LayerEffects.Filter.ViewModels
+{
+    public class ColorMatrixConfigurationViewModel : EffectConfigurationViewModel
+    {
+        public ColorMatrixConfigurationViewModel(ColorMatrixEffect layerEffect) : base(layerEffect)
+        {
+            Properties = layerEffect.Properties;
+        }
+
+        public ColorMatrixEffectProperties Properties { get; set; }
+
+        public void OpenGuide()
+        {
+            Process.Start(new ProcessStartInfo("cmd", "/c start https://docs.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/graphics/skiasharp/effects/color-filters")
+            {
+                CreateNoWindow = true
+            });
+        }
+    }
+}

src/Plugins/Artemis.Plugins.LayerEffects.Filter/Views/ColorMatrixConfigurationView.xaml

@@ -0,0 +1,65 @@
+<UserControl x:Class="Artemis.Plugins.LayerEffects.Filter.Views.ColorMatrixConfigurationView"
+             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:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:local="clr-namespace:Artemis.Plugins.LayerEffects.Filter.Views"
+             xmlns:viewModels="clr-namespace:Artemis.Plugins.LayerEffects.Filter.ViewModels"
+             xmlns:s="https://github.com/canton7/Stylet"
+             mc:Ignorable="d"
+             d:DesignHeight="450" d:DesignWidth="800"
+             d:DataContext="{d:DesignInstance viewModels:ColorMatrixConfigurationViewModel}">
+    <StackPanel Margin="15">
+        <TextBlock>
+            Below you can define the color matrix to be applied to the folder/layer. <LineBreak/>
+            Please note this is an advanced effect mainly included for the sake of completion.
+        </TextBlock>
+        <TextBlock TextWrapping="Wrap" Margin="0 25">
+            If you are still not deterred,
+            <Hyperlink NavigateUri="https://docs.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/graphics/skiasharp/effects/color-filters" 
+                       RequestNavigate="{s:Action OpenGuide}">
+                click here
+            </Hyperlink>
+            for a full explanation of color transforms in SkiaSharp, the rendering library Artemis uses.
+        </TextBlock>
+        <Grid>
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="50" />
+                <ColumnDefinition Width="50"/>
+                <ColumnDefinition Width="50"/>
+                <ColumnDefinition Width="50"/>
+                <ColumnDefinition Width="50"/>
+            </Grid.ColumnDefinitions>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="Auto"/>
+            </Grid.RowDefinitions>
+            <TextBox Grid.Row="0" Grid.Column="0" Text="{Binding Properties.ColorMatrix.CurrentValue[0]}" Margin="2" />
+            <TextBox Grid.Row="0" Grid.Column="1" Text="{Binding Properties.ColorMatrix.CurrentValue[1]}" Margin="2" />
+            <TextBox Grid.Row="0" Grid.Column="2" Text="{Binding Properties.ColorMatrix.CurrentValue[2]}" Margin="2" />
+            <TextBox Grid.Row="0" Grid.Column="3" Text="{Binding Properties.ColorMatrix.CurrentValue[3]}" Margin="2" />
+            <TextBox Grid.Row="0" Grid.Column="4" Text="{Binding Properties.ColorMatrix.CurrentValue[4]}" Margin="2" />
+
+            <TextBox Grid.Row="1" Grid.Column="0" Text="{Binding Properties.ColorMatrix.CurrentValue[5]}" Margin="2" />
+            <TextBox Grid.Row="1" Grid.Column="1" Text="{Binding Properties.ColorMatrix.CurrentValue[6]}" Margin="2" />
+            <TextBox Grid.Row="1" Grid.Column="2" Text="{Binding Properties.ColorMatrix.CurrentValue[7]}" Margin="2" />
+            <TextBox Grid.Row="1" Grid.Column="3" Text="{Binding Properties.ColorMatrix.CurrentValue[8]}" Margin="2" />
+            <TextBox Grid.Row="1" Grid.Column="4" Text="{Binding Properties.ColorMatrix.CurrentValue[9]}" Margin="2" />
+
+            <TextBox Grid.Row="2" Grid.Column="0" Text="{Binding Properties.ColorMatrix.CurrentValue[10]}" Margin="2" />
+            <TextBox Grid.Row="2" Grid.Column="1" Text="{Binding Properties.ColorMatrix.CurrentValue[11]}" Margin="2" />
+            <TextBox Grid.Row="2" Grid.Column="2" Text="{Binding Properties.ColorMatrix.CurrentValue[12]}" Margin="2" />
+            <TextBox Grid.Row="2" Grid.Column="3" Text="{Binding Properties.ColorMatrix.CurrentValue[13]}" Margin="2" />
+            <TextBox Grid.Row="2" Grid.Column="4" Text="{Binding Properties.ColorMatrix.CurrentValue[14]}" Margin="2" />
+
+            <TextBox Grid.Row="3" Grid.Column="0" Text="{Binding Properties.ColorMatrix.CurrentValue[15]}" Margin="2" />
+            <TextBox Grid.Row="3" Grid.Column="1" Text="{Binding Properties.ColorMatrix.CurrentValue[16]}" Margin="2" />
+            <TextBox Grid.Row="3" Grid.Column="2" Text="{Binding Properties.ColorMatrix.CurrentValue[17]}" Margin="2" />
+            <TextBox Grid.Row="3" Grid.Column="3" Text="{Binding Properties.ColorMatrix.CurrentValue[18]}" Margin="2" />
+            <TextBox Grid.Row="3" Grid.Column="4" Text="{Binding Properties.ColorMatrix.CurrentValue[19]}" Margin="2" />
+        </Grid>
+    </StackPanel>
+    
+</UserControl>