From 38e4a64bb8b0150ee1883f329c5bbfc8de2582dd Mon Sep 17 00:00:00 2001
From: estrogen elf <87099578+BlossomiShymae@users.noreply.github.com>
Date: Sat, 3 May 2025 19:19:59 -0500
Subject: [PATCH] Add Mica theme for Windows 11 and newer

---
 Needlework.Net/Program.cs                     |  6 +++++-
 .../Views/MainWindow/MainWindowView.axaml.cs  | 17 +++++++++++++++
 .../Pages/Endpoints/EndpointsTabView.axaml    | 21 +++++++++++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/Needlework.Net/Program.cs b/Needlework.Net/Program.cs
index 0a1cc67..af77628 100644
--- a/Needlework.Net/Program.cs
+++ b/Needlework.Net/Program.cs
@@ -36,7 +36,11 @@ class Program
         return AppBuilder.Configure(() => new App(BuildServices()))
                 .UsePlatformDetect()
                 .WithInterFont()
-                .LogToTrace();
+                .LogToTrace()
+                .With(new Win32PlatformOptions
+                {
+                    CompositionMode = [ Win32CompositionMode.WinUIComposition, Win32CompositionMode.DirectComposition ]
+                });
     }
 
     private static IServiceProvider BuildServices()
diff --git a/Needlework.Net/Views/MainWindow/MainWindowView.axaml.cs b/Needlework.Net/Views/MainWindow/MainWindowView.axaml.cs
index ec6a532..3f9eef6 100644
--- a/Needlework.Net/Views/MainWindow/MainWindowView.axaml.cs
+++ b/Needlework.Net/Views/MainWindow/MainWindowView.axaml.cs
@@ -1,3 +1,6 @@
+using System;
+using System.Runtime.InteropServices;
+using Avalonia.Controls;
 using FluentAvalonia.UI.Windowing;
 
 namespace Needlework.Net.Views.MainWindow;
@@ -9,5 +12,19 @@ public partial class MainWindowView : AppWindow
         InitializeComponent();
 
         TitleBar.ExtendsContentIntoTitleBar = true;
+        TransparencyLevelHint = [WindowTransparencyLevel.Mica, WindowTransparencyLevel.None];
+        
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+        {
+            if (IsWindows11OrNewer())
+            {
+                Background = null;
+            }
+        }
+    }
+
+    private static bool IsWindows11OrNewer()
+    {
+        return Environment.OSVersion.Version.Major >= 10 && Environment.OSVersion.Version.Build >= 22000;
     }
 }
\ No newline at end of file
diff --git a/Needlework.Net/Views/Pages/Endpoints/EndpointsTabView.axaml b/Needlework.Net/Views/Pages/Endpoints/EndpointsTabView.axaml
index 64441ea..2daa3bd 100644
--- a/Needlework.Net/Views/Pages/Endpoints/EndpointsTabView.axaml
+++ b/Needlework.Net/Views/Pages/Endpoints/EndpointsTabView.axaml
@@ -15,6 +15,27 @@
 			<ui:TabView TabItems="{Binding Endpoints}"
 						AddTabButtonCommand="{Binding AddEndpointCommand}"
 						TabCloseRequested="TabView_TabCloseRequested">
+				<!--Need to override Tab header for Mica theme...-->
+				<ui:TabView.Resources>
+					<ResourceDictionary>
+						<SolidColorBrush x:Key="TabViewItemHeaderBackgroundSelected" Color="{DynamicResource ControlFillColorTransparent}"/>
+					</ResourceDictionary>
+				</ui:TabView.Resources>
+				<!--We need to hack this style for Mica theme since there is no way to explicity set style priority in Avalonia...-->
+				<ui:TabView.Styles>
+					<Style Selector="Grid > ContentPresenter#TabContentPresenter">
+						<Style.Animations>
+							<Animation IterationCount="1" Duration="0:0:1" FillMode="Both">
+								<KeyFrame Cue="0%">
+									<Setter Property="Background" Value="{DynamicResource ControlFillColorTransparent}"/>
+								</KeyFrame>
+								<KeyFrame Cue="100%">
+									<Setter Property="Background" Value="{DynamicResource ControlFillColorTransparent}"/>
+								</KeyFrame>
+							</Animation>
+						</Style.Animations>
+					</Style>
+				</ui:TabView.Styles>
 				<ui:TabView.TabItemTemplate>
 					<DataTemplate DataType="vm:EndpointItem">
 						<ui:TabViewItem Header="{Binding Header}"