project created

.gitignore

@@ -0,0 +1,22 @@
+# Build results
+[Bb]in/
+.bin/
+[Dd]ebug/
+[Rr]elease/
+[Rr]eleases/
+[Oo]bj/
+[Oo]ut/
+[Ll]og/
+[Ll]ogs/
+[Pp]ublish/
+
+# IDE files
+.vs/
+.vscode/
+.vshistory/
+.idea/
+.editorconfig
+*.user
+
+#backups
+.old*/

App.axaml

@@ -0,0 +1,10 @@
+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="Slimak.App"
+             RequestedThemeVariant="Dark">
+    
+    <Application.Styles>
+        <SimpleTheme />
+    </Application.Styles>
+    
+</Application>

App.axaml.cs

@@ -0,0 +1,23 @@
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Markup.Xaml;
+
+namespace Slimak;
+
+public partial class App : Application
+{
+    public override void Initialize()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public override void OnFrameworkInitializationCompleted()
+    {
+        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+        {
+            desktop.MainWindow = new MainWindow();
+        }
+
+        base.OnFrameworkInitializationCompleted();
+    }
+}

MainWindow.axaml

@@ -0,0 +1,22 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:gif="clr-namespace:Avalonia.Gif;assembly=Avalonia.Gif"
+        x:Class="Slimak.MainWindow"
+        Title="Slimak"
+        Name="w"
+        Width="400" Height="300"
+        MinWidth="400" MinHeight="300"
+        WindowStartupLocation="CenterScreen">
+    <Grid Background="Black" 
+          PointerPressed="InputElement_OnPointerOver"
+          DragDrop.AllowDrop="True">
+        <Image
+            Stretch="Fill" 
+            Source="avares://Slimak/resources/Slimak.png"
+            IsVisible="{Binding !#w.IsEating}" />
+        <gif:GifImage 
+            Stretch="Fill"
+            SourceUri="avares://Slimak/resources/Slimak_eating.gif"
+            IsVisible="{Binding #w.IsEating}"/>
+    </Grid>
+</Window>

MainWindow.axaml.cs

@@ -0,0 +1,65 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Data;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Avalonia.Platform;
+using Avalonia.Platform.Storage;
+
+namespace Slimak;
+
+public partial class MainWindow : Window
+{
+    public static readonly StyledProperty<bool> IsEatingProperty =
+        AvaloniaProperty.Register<MainWindow, bool>(nameof(IsEating),
+            defaultBindingMode: BindingMode.TwoWay, defaultValue: false);
+    public bool IsEating
+    {
+        get => GetValue(IsEatingProperty);
+        set => SetValue(IsEatingProperty, value);
+    }
+    
+    public MainWindow()
+    {
+        InitializeComponent();
+        AddHandler(DragDrop.DropEvent, Drop);
+    }
+
+    protected override void OnLoaded(RoutedEventArgs e)
+    {
+        base.OnLoaded(e);
+        using var res = AssetLoader.Open(new Uri("avares://Slimak/resources/Salata.png"));
+        using var file = File.OpenWrite("Salata.png");
+        res.CopyTo(file);
+    }
+
+    private void InputElement_OnPointerOver(object? sender, PointerPressedEventArgs e)
+    {
+        if (IsEating)
+        {
+            IsEating = false;
+            Console.WriteLine("Stopped eating");
+        }
+    }
+    
+    private void Drop(object? sender, DragEventArgs e)
+    {
+        if(IsEating)
+            return;
+        
+        Console.WriteLine("Drag and Drop");
+        var data = e.Data;
+        var draggedFiles = data.GetFiles();
+        var storageItems = (draggedFiles ?? Array.Empty<IStorageItem>()).ToArray();
+        Console.WriteLine($"files: {storageItems.Select(f => f.Name).Aggregate((a, b) => a + " " + b + " ")}");
+        if(draggedFiles != null && storageItems.Any(st => st.Name.ToLower().Contains("salata")))
+        {
+            IsEating = true;
+            Console.WriteLine("Started eating");
+        }
+    }
+}

Program.cs

@@ -0,0 +1,20 @@
+using Avalonia;
+using System;
+
+namespace Slimak;
+
+class Program
+{
+    // Initialization code. Don't use any Avalonia, third-party APIs or any
+    // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
+    // yet and stuff might break.
+    [STAThread]
+    public static void Main(string[] args) => BuildAvaloniaApp()
+        .StartWithClassicDesktopLifetime(args);
+
+    // Avalonia configuration, don't remove; also used by visual designer.
+    public static AppBuilder BuildAvaloniaApp()
+        => AppBuilder.Configure<App>()
+            .UsePlatformDetect()
+            .LogToTrace();
+}

Slimak.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+    <PropertyGroup>
+        <OutputType>WinExe</OutputType>
+        <TargetFramework>net8.0</TargetFramework>
+        <LangVersion>latest</LangVersion>
+        <Nullable>enable</Nullable>
+        <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
+        <ApplicationManifest>app.manifest</ApplicationManifest>
+        <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+        <SatelliteResourceLanguages>en</SatelliteResourceLanguages>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Avalonia" Version="11.1.3"/>
+        <PackageReference Include="Avalonia.Desktop" Version="11.1.3"/>
+        <PackageReference Include="Avalonia.Themes.Simple" Version="11.1.3"/>
+        <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
+        <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.1.3"/>
+        <PackageReference Include="AvaloniaGif-Unofficial" Version="1.0.1" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <AvaloniaResource Include="resources\**"/>
+    </ItemGroup>
+</Project>

Slimak.sln

@@ -0,0 +1,16 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Slimak", "Slimak.csproj", "{9E0B960E-6E69-4497-9D1F-2F25601F258F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{9E0B960E-6E69-4497-9D1F-2F25601F258F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9E0B960E-6E69-4497-9D1F-2F25601F258F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9E0B960E-6E69-4497-9D1F-2F25601F258F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9E0B960E-6E69-4497-9D1F-2F25601F258F}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

app.manifest

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <!-- This manifest is used on Windows only.
+       Don't remove it as it might cause problems with window transparency and embedded controls.
+       For more details visit https://learn.microsoft.com/en-us/windows/win32/sbscs/application-manifests -->
+  <assemblyIdentity version="1.0.0.0" name="Slimak.Desktop"/>
+
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- A list of the Windows versions that this application has been tested on
+           and is designed to work with. Uncomment the appropriate elements
+           and Windows will automatically select the most compatible environment. -->
+
+      <!-- Windows 10 -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+    </application>
+  </compatibility>
+</assembly>