From 6e17c3285352b2422729d0904e726358dadc2183 Mon Sep 17 00:00:00 2001
From: Sergio Pedri <sergio0694@live.com>
Date: Fri, 14 Jun 2019 16:49:08 +0200
Subject: [PATCH] Added acrylic pipeline effect

---
 .../Brushes/Effects/AcrylicEffect.cs          | 39 +++++++++++++++++++
 .../Brushes/PipelineBrush.cs                  |  7 ++++
 .../UICompositionAnimations.csproj            |  1 +
 3 files changed, 47 insertions(+)
 create mode 100644 UICompositionAnimations/Brushes/Effects/AcrylicEffect.cs

diff --git a/UICompositionAnimations/Brushes/Effects/AcrylicEffect.cs b/UICompositionAnimations/Brushes/Effects/AcrylicEffect.cs
new file mode 100644
index 0000000..f78d554
--- /dev/null
+++ b/UICompositionAnimations/Brushes/Effects/AcrylicEffect.cs
@@ -0,0 +1,39 @@
+using System;
+using Windows.UI;
+using Windows.UI.Xaml.Media;
+using UICompositionAnimations.Brushes.Effects.Interfaces;
+
+namespace UICompositionAnimations.Brushes.Effects
+{
+    /// <summary>
+    /// A custom acrylic effect that can be inserted into a pipeline
+    /// </summary>
+    public sealed class AcrylicEffect : IPipelineEffect
+    {
+        /// <summary>
+        /// Gets or sets the source mode for the effect
+        /// </summary>
+        public AcrylicBackgroundSource Source { get; set; }
+
+        /// <summary>
+        /// Gets or sets the blur amount for the effect
+        /// </summary>
+        /// <remarks>This property is ignored when the active mode is <see cref="AcrylicBackgroundSource.HostBackdrop"/></remarks>
+        public double BlurAmount { get; set; }
+
+        /// <summary>
+        /// Gets or sets the tint for the effect
+        /// </summary>
+        public Color Tint { get; set; }
+
+        /// <summary>
+        /// Gets or sets the color for the tint effect
+        /// </summary>
+        public double TintMix { get; set; }
+
+        /// <summary>
+        /// Gets or sets the <see cref="Uri"/> to the texture to use
+        /// </summary>
+        public Uri TextureUri { get; set; }
+    }
+}
diff --git a/UICompositionAnimations/Brushes/PipelineBrush.cs b/UICompositionAnimations/Brushes/PipelineBrush.cs
index 0f33992..ea1f7c6 100644
--- a/UICompositionAnimations/Brushes/PipelineBrush.cs
+++ b/UICompositionAnimations/Brushes/PipelineBrush.cs
@@ -31,6 +31,13 @@ PipelineBuilder Start(IPipelineEffect effect)
                     case SolidColorEffect color: return PipelineBuilder.FromColor(color.Color);
                     case ImageEffect image: return PipelineBuilder.FromImage(image.Uri, image.DPIMode, image.CacheMode);
                     case TileEffect tile: return PipelineBuilder.FromTiles(tile.Uri, tile.DPIMode, tile.CacheMode);
+                    case AcrylicEffect acrylic:
+                        switch (acrylic.Source)
+                        {
+                            case AcrylicBackgroundSource.Backdrop: return PipelineBuilder.FromBackdropAcrylic(acrylic.Tint, (float)acrylic.TintMix, (float)acrylic.BlurAmount, acrylic.TextureUri);
+                            case AcrylicBackgroundSource.HostBackdrop: return PipelineBuilder.FromHostBackdropAcrylic(acrylic.Tint, (float)acrylic.TintMix, acrylic.TextureUri);
+                            default: throw new ArgumentOutOfRangeException(nameof(acrylic.Source), $"Invalid acrylic source: {acrylic.Source}");
+                        }
                     default: throw new ArgumentException($"Invalid initial pipeline effect: {effect.GetType()}");
                 }
             }
diff --git a/UICompositionAnimations/UICompositionAnimations.csproj b/UICompositionAnimations/UICompositionAnimations.csproj
index 8028b0e..f29595d 100644
--- a/UICompositionAnimations/UICompositionAnimations.csproj
+++ b/UICompositionAnimations/UICompositionAnimations.csproj
@@ -130,6 +130,7 @@
     <Compile Include="Brushes\AcrylicBrush.cs" />
     <Compile Include="Brushes\Effects\Abstract\ImageEffectBase.cs" />
     <Compile Include="Brushes\Effects\Abstract\ValueEffectBase.cs" />
+    <Compile Include="Brushes\Effects\AcrylicEffect.cs" />
     <Compile Include="Brushes\Effects\BackdropEffect.cs" />
     <Compile Include="Brushes\Effects\BlendEffect.cs" />
     <Compile Include="Brushes\Effects\BlurEffect.cs" />