First take at the implementation of MaterialIcon

Crashes with HRESULT E_FAIL (0x80004005)

Material.Icons.Maui.Demo/App.xaml

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+<?xml version = "1.0" encoding = "UTF-8" ?>
+<Application xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             xmlns:local="clr-namespace:Material.Icons.Maui.Demo"
+             x:Class="Material.Icons.Maui.Demo.App">
+    <Application.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="Resources/Styles/Colors.xaml" />
+                <ResourceDictionary Source="Resources/Styles/Styles.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Application.Resources>
+</Application>

Material.Icons.Maui.Demo/App.xaml.cs

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+namespace Material.Icons.Maui.Demo;
+
+public partial class App {
+    public App() {
+        InitializeComponent();
+
+        // UserAppTheme = AppTheme.Light;
+        MainPage = new AppShell();
+    }
+}

Material.Icons.Maui.Demo/AppShell.xaml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<Shell
+    x:Class="Material.Icons.Maui.Demo.AppShell"
+    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+    xmlns:local="clr-namespace:Material.Icons.Maui.Demo"
+    Shell.FlyoutBehavior="Disabled"
+    Title="Material.Icons Demo">
+
+    <ShellContent
+        ContentTemplate="{DataTemplate local:MainPage}"
+        Route="MainPage" />
+
+</Shell>

Material.Icons.Maui.Demo/AppShell.xaml.cs

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+namespace Material.Icons.Maui.Demo;
+
+public partial class AppShell {
+    public AppShell() {
+        InitializeComponent();
+    }
+}

Material.Icons.Maui.Demo/MainPage.xaml

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+<?xml version="1.0" encoding="utf-8" ?>
+<maui:ReactiveContentPage
+  xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+  x:TypeArguments="demo:MainViewModel"
+  xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+  xmlns:material="http://schemas.skproch/material/icons/2024"
+  xmlns:maui="clr-namespace:ReactiveUI.Maui;assembly=ReactiveUI.Maui"
+  xmlns:demo="clr-namespace:Material.Icons.Maui.Demo"
+  x:Class="Material.Icons.Maui.Demo.MainPage"
+  x:DataType="demo:MainViewModel">
+
+  <Grid>
+    <CollectionView
+      ItemsSource="{Binding Kinds}"
+      SelectionMode="Single">
+
+      <CollectionView.ItemsLayout>
+        <GridItemsLayout Orientation="Vertical" Span="12" />
+      </CollectionView.ItemsLayout>
+
+      <CollectionView.ItemTemplate>
+        <DataTemplate x:DataType="demo:PackIconKindGroup">
+          <Grid
+            WidthRequest="64" HeightRequest="64"
+            HorizontalOptions="Center"
+            RowDefinitions="32,32"
+            Background="Transparent">
+
+            <material:MaterialIcon
+              Margin="2"
+              Grid.Row="0"
+              Kind="{Binding Kind}" />
+
+            <Label
+              Grid.Row="1"
+              Text="{Binding DisplayName}"
+              MaxLines="1"
+              LineBreakMode="TailTruncation"
+              HorizontalTextAlignment="Center"
+              VerticalOptions="Center" />
+
+          </Grid>
+        </DataTemplate>
+      </CollectionView.ItemTemplate>
+    </CollectionView>
+  </Grid>
+
+</maui:ReactiveContentPage>

Material.Icons.Maui.Demo/MainPage.xaml.cs

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+namespace Material.Icons.Maui.Demo;
+
+public partial class MainPage {
+    public MainPage(MainViewModel viewModel) {
+        Controls.Init();
+
+        BindingContext = viewModel;
+
+        InitializeComponent();
+    }
+}

Material.Icons.Maui.Demo/MainViewModel.cs

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+using System.Reactive.Linq;
+
+using DynamicData.Binding;
+using DynamicData;
+
+using ReactiveUI;
+using ReactiveUI.SourceGenerators;
+
+namespace Material.Icons.Maui.Demo;
+
+public partial class MainViewModel : ReactiveObject {
+    private readonly SourceList<PackIconKindGroup> _kindsSource = new();
+
+    [Reactive]
+    private ObservableCollectionExtended<PackIconKindGroup> _kinds = new();
+
+    [Reactive]
+    private string? _searchText;
+
+    [Reactive]
+    private PackIconKindGroup? _group;
+
+    [ObservableAsProperty]
+    private string? _copyText;
+
+    public MainViewModel() {
+        _kindsSource.AddRange(
+            (from name in Enum.GetNames<MaterialIconKind>()
+                let kind = Enum.Parse<MaterialIconKind>(name)
+                let value = (int)kind
+                let item = (Name: name, Kind: kind, Value: value)
+                group item by item.Value
+                into g
+                select new PackIconKindGroup(g.Select(x => x.Name)))
+            .OrderBy(x => x.DisplayName));
+
+        var kindsFilter = this.WhenAnyValue(x => x.SearchText)
+            .Select(text => string.IsNullOrEmpty(text)
+                ? CreateUnfilteredFilter()
+                : CreateTextFilter(text))
+            .Throttle(TimeSpan.FromMilliseconds(250));
+
+        _kindsSource
+            .Connect()
+            .Filter(kindsFilter)
+            .Sort(SortExpressionComparer<PackIconKindGroup>.Ascending(p => p.DisplayName))
+            .ObserveOn(RxApp.MainThreadScheduler)
+            .Bind(_kinds)
+            .Subscribe();
+
+        _copyTextHelper = this.WhenAnyValue(x => x.Group)
+            .Select(value => value is null ? null : $"<wpf:MaterialIcon Kind=\"{value.Kind}\" />")
+            .ToProperty(this, x => x.CopyText);
+    }
+
+    private static Func<PackIconKindGroup, bool> CreateUnfilteredFilter() {
+        return _ => true;
+    }
+
+    private static Func<PackIconKindGroup, bool> CreateTextFilter(string searchText) {
+        return kindGroup => kindGroup.Names.Any(a => a.Contains(searchText, StringComparison.CurrentCultureIgnoreCase));
+    }
+}

Material.Icons.Maui.Demo/Material.Icons.Maui.Demo.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<TargetFrameworks>net8.0-android;net8.0-ios;net8.0-maccatalyst</TargetFrameworks>
+		<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows'))">$(TargetFrameworks);net8.0-windows10.0.19041.0</TargetFrameworks>
+		<!-- Uncomment to also build the tizen app. You will need to install tizen by following this: https://github.com/Samsung/Tizen.NET -->
+		<!-- <TargetFrameworks>$(TargetFrameworks);net8.0-tizen</TargetFrameworks> -->
+
+		<!-- Note for MacCatalyst:
+		The default runtime is maccatalyst-x64, except in Release config, in which case the default is maccatalyst-x64;maccatalyst-arm64.
+		When specifying both architectures, use the plural <RuntimeIdentifiers> instead of the singular <RuntimeIdentifier>.
+		The Mac App Store will NOT accept apps with ONLY maccatalyst-arm64 indicated;
+		either BOTH runtimes must be indicated or ONLY macatalyst-x64. -->
+		<!-- For example: <RuntimeIdentifiers>maccatalyst-x64;maccatalyst-arm64</RuntimeIdentifiers> -->
+
+		<OutputType>Exe</OutputType>
+		<RootNamespace>Material.Icons.Maui.Demo</RootNamespace>
+		<UseMaui>true</UseMaui>
+		<SingleProject>true</SingleProject>
+		<ImplicitUsings>enable</ImplicitUsings>
+		<Nullable>enable</Nullable>
+
+		<!-- Display name -->
+		<ApplicationTitle>Material.Icons Demo</ApplicationTitle>
+
+		<!-- App Identifier -->
+		<ApplicationId>com.companyname.material.icons.maui.demo</ApplicationId>
+
+		<!-- Versions -->
+		<ApplicationDisplayVersion>1.0</ApplicationDisplayVersion>
+		<ApplicationVersion>1</ApplicationVersion>
+
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'ios'">11.0</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'maccatalyst'">13.1</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'android'">21.0</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'">10.0.17763.0</SupportedOSPlatformVersion>
+		<TargetPlatformMinVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'">10.0.17763.0</TargetPlatformMinVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'tizen'">6.5</SupportedOSPlatformVersion>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<!-- App Icon -->
+		<MauiIcon Include="Resources\AppIcon\appicon.svg" ForegroundFile="Resources\AppIcon\appiconfg.svg" Color="#512BD4" />
+
+		<!-- Splash Screen -->
+		<MauiSplashScreen Include="Resources\Splash\splash.svg" Color="#512BD4" BaseSize="128,128" />
+
+		<!-- Images -->
+		<MauiImage Include="Resources\Images\*" />
+		<MauiImage Update="Resources\Images\dotnet_bot.png" Resize="True" BaseSize="300,185" />
+
+		<!-- Custom Fonts -->
+		<MauiFont Include="Resources\Fonts\*" />
+
+		<!-- Raw Assets (also remove the "Resources\Raw" prefix) -->
+		<MauiAsset Include="Resources\Raw\**" LogicalName="%(RecursiveDir)%(Filename)%(Extension)" />
+	</ItemGroup>
+
+	<ItemGroup>
+		<PackageReference Include="Microsoft.Maui.Controls" Version="8.0.82" />
+		<PackageReference Include="Microsoft.Maui.Controls.Compatibility" Version="8.0.82" />
+		<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="8.0.0" />
+		<PackageReference Include="ReactiveUI.Maui" Version="20.1.1" />
+		<PackageReference Include="ReactiveUI.SourceGenerators" Version="1.0.3" />
+		<PackageReference Include="Splat.Microsoft.Extensions.DependencyInjection" Version="15.1.1" />
+		<PackageReference Include="Splat.Microsoft.Extensions.Logging" Version="15.1.1" />
+	</ItemGroup>
+
+	<ItemGroup>
+	  <ProjectReference Include="..\Material.Icons.Maui\Material.Icons.Maui.csproj" />
+	</ItemGroup>
+
+</Project>

Material.Icons.Maui.Demo/MauiProgram.cs

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+using Microsoft.Extensions.Logging;
+
+using ReactiveUI;
+
+using Splat;
+using Splat.Microsoft.Extensions.DependencyInjection;
+using Splat.Microsoft.Extensions.Logging;
+
+namespace Material.Icons.Maui.Demo;
+
+public static class MauiProgram {
+    public static MauiApp CreateMauiApp() {
+        var builder = MauiApp.CreateBuilder();
+        builder
+            .UseMauiApp<App>()
+            .ConfigureFonts(fonts => {
+                fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
+                fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
+            });
+
+        // Initialization of Splat and ReactiveUI
+        builder.Logging.AddSplat();
+        builder.Services.UseMicrosoftDependencyResolver();
+        Locator.CurrentMutable.InitializeSplat();
+        Locator.CurrentMutable.InitializeReactiveUI();
+
+        // ViewModels
+        builder.Services.AddSingleton<MainViewModel>();
+
+        // Views
+        builder.Services.AddSingleton<MainPage>();
+
+#if DEBUG
+        builder.Logging.AddDebug();
+#endif
+
+        var app = builder.Build();
+
+        // Post-initialization of Splat
+        app.Services.UseMicrosoftDependencyResolver();
+
+        return app;
+    }
+}

Material.Icons.Maui.Demo/PackIconKindGroup.cs

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+namespace Material.Icons.Maui.Demo;
+
+public class PackIconKindGroup {
+    public PackIconKindGroup(IEnumerable<string> kinds) {
+        var sortedKinds = kinds.OrderBy(x => x, StringComparer.InvariantCultureIgnoreCase).ToArray();
+        if (sortedKinds.Length == 0)
+            throw new ArgumentException($"{nameof(kinds)} must contain at least one value");
+        Kind = Enum.Parse<MaterialIconKind>(sortedKinds[0]);
+        DisplayName = sortedKinds[0];
+        Names = sortedKinds;
+    }
+
+    public MaterialIconKind Kind { get; }
+    public string DisplayName { get; }
+    public string[] Names { get; }
+}

Material.Icons.Maui.Demo/Platforms/Android/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+	<application android:allowBackup="true" android:icon="@mipmap/appicon" android:roundIcon="@mipmap/appicon_round" android:supportsRtl="true"></application>
+	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+	<uses-permission android:name="android.permission.INTERNET" />
+</manifest>

Material.Icons.Maui.Demo/Platforms/Android/MainActivity.cs

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+using Android.App;
+using Android.Content.PM;
+using Android.OS;
+
+namespace Material.Icons.Maui.Demo {
+    [Activity(Theme = "@style/Maui.SplashTheme", MainLauncher = true, LaunchMode = LaunchMode.SingleTop, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize | ConfigChanges.Density)]
+    public class MainActivity : MauiAppCompatActivity {
+    }
+}

Material.Icons.Maui.Demo/Platforms/Android/MainApplication.cs

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+using Android.App;
+using Android.Runtime;
+
+namespace Material.Icons.Maui.Demo {
+    [Application]
+    public class MainApplication : MauiApplication {
+        public MainApplication(IntPtr handle, JniHandleOwnership ownership)
+            : base(handle, ownership) {
+        }
+
+        protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+    }
+}

Material.Icons.Maui.Demo/Platforms/Android/Resources/values/colors.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#512BD4</color>
+    <color name="colorPrimaryDark">#2B0B98</color>
+    <color name="colorAccent">#2B0B98</color>
+</resources>

Material.Icons.Maui.Demo/Platforms/MacCatalyst/AppDelegate.cs

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+using Foundation;
+
+namespace Material.Icons.Maui.Demo {
+    [Register("AppDelegate")]
+    public class AppDelegate : MauiUIApplicationDelegate {
+        protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+    }
+}

Material.Icons.Maui.Demo/Platforms/MacCatalyst/Entitlements.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+    <!-- See https://aka.ms/maui-publish-app-store#add-entitlements for more information about adding entitlements.-->
+    <dict>
+        <!-- App Sandbox must be enabled to distribute a MacCatalyst app through the Mac App Store. -->
+        <key>com.apple.security.app-sandbox</key>
+        <true/>
+        <!-- When App Sandbox is enabled, this value is required to open outgoing network connections. -->
+        <key>com.apple.security.network.client</key>
+        <true/>
+    </dict>
+</plist>
+