remove some un-used code (#19146)

Co-authored-by: Julien Lebosquain <julien@lebosquain.net>

src/Avalonia.X11/X11Window.cs

@@ -948,11 +948,6 @@ namespace Avalonia.X11
                 XSyncSetCounter(_x11.Display, _xSyncCounter, _xSyncValue);
             }
         }
-        
-        public void Invalidate(Rect rect)
-        {
-
-        }
 
         public IInputRoot InputRoot
             => _inputRoot ?? throw new InvalidOperationException($"{nameof(SetInputRoot)} must have been called");

src/Headless/Avalonia.Headless/AvaloniaHeadlessPlatform.cs

@@ -62,8 +62,6 @@ namespace Avalonia.Headless
 
             public IWindowImpl CreateEmbeddableWindow() => throw new PlatformNotSupportedException();
 
-            public IPopupImpl CreatePopup() => new HeadlessWindowImpl(true, _frameBufferFormat);
-
             public ITrayIconImpl? CreateTrayIcon() => null;
         }
         

src/Headless/Avalonia.Headless/HeadlessPlatformRenderInterface.cs

@@ -23,8 +23,6 @@ namespace Avalonia.Headless
                 .Bind<ITextShaperImpl>().ToConstant(new HeadlessTextShaperStub());
         }
 
-        public IEnumerable<string> InstalledFontNames { get; } = new[] { "Tahoma" };
-
         public IPlatformRenderInterfaceContext CreateBackendContext(IPlatformGraphicsContext? graphicsContext) => this;
 
         public bool SupportsIndividualRoundRects => false;
@@ -452,8 +450,6 @@ namespace Avalonia.Headless
 
             public Matrix Transform { get; set; }
 
-            public RenderOptions RenderOptions { get; set; }
-
             public void Clear(Color color)
             {
 
@@ -517,16 +513,6 @@ namespace Avalonia.Headless
 
             }
 
-            public void PushBitmapBlendMode(BitmapBlendingMode blendingMode)
-            {
-                
-            }
-
-            public void PopBitmapBlendMode()
-            {
-                
-            }
-            
             public object? GetFeature(Type t)
             {
                 return null;
@@ -540,10 +526,6 @@ namespace Avalonia.Headless
             {
             }
 
-            public void DrawRectangle(IPen pen, Rect rect, float cornerRadius = 0)
-            {
-            }
-
             public void DrawBitmap(IBitmapImpl source, double opacity, Rect sourceRect, Rect destRect)
             {
                 

src/Headless/Avalonia.Headless/HeadlessWindowImpl.cs

@@ -59,10 +59,6 @@ namespace Avalonia.Headless
 
         public Compositor Compositor => AvaloniaHeadlessPlatform.Compositor!;
 
-        public void Invalidate(Rect rect)
-        {
-        }
-
         public void SetInputRoot(IInputRoot inputRoot)
         {
             InputRoot = inputRoot;
@@ -96,16 +92,6 @@ namespace Avalonia.Headless
             Dispatcher.UIThread.Post(() => Deactivated?.Invoke(), DispatcherPriority.Input);
         }
 
-        public void BeginMoveDrag()
-        {
-
-        }
-
-        public void BeginResizeDrag(WindowEdge edge)
-        {
-
-        }
-
         public PixelPoint Position { get; set; }
         public Action<PixelPoint>? PositionChanged { get; set; }
         public void Activate()

src/Skia/Avalonia.Skia/DrawingContextImpl.cs

@@ -1304,18 +1304,6 @@ namespace Avalonia.Skia
             return (byte)(r * 255);
         }
 
-        private static Color Blend(Color left, Color right)
-        {
-            var aa = left.A / 255d;
-            var ab = right.A / 255d;
-            return new Color(
-                (byte)((aa + ab * (1 - aa)) * 255),
-                Blend(left.R, left.A, right.R, right.A),
-                Blend(left.G, left.A, right.G, right.A),
-                Blend(left.B, left.A, right.B, right.A)                
-            );
-        }
-
         internal PaintWrapper CreateAcrylicPaint (SKPaint paint, IExperimentalAcrylicMaterial material)
         {
             var paintWrapper = new PaintWrapper(paint);
@@ -1535,16 +1523,6 @@ namespace Avalonia.Skia
                 _disposable3 = null;
             }
 
-            public IDisposable ApplyTo(SKPaint paint)
-            {
-                var state = new PaintState(paint, paint.Color, paint.Shader);
-
-                paint.Color = Paint.Color;
-                paint.Shader = Paint.Shader;
-
-                return state;
-            }
-
             /// <summary>
             /// Add new disposable to a wrapper.
             /// </summary>

src/tools/Avalonia.Generators/NameGenerator/Options.cs

@@ -1,13 +1,5 @@
 namespace Avalonia.Generators.NameGenerator;
 
-internal enum Options
-{
-    Public = 0,
-    Private = 1,
-    Internal = 2,
-    Protected = 3,
-}
-
 internal enum Behavior
 {
     OnlyProperties = 0,

src/tools/DevGenerators/CompositionGenerator/Generator.Utils.cs

@@ -8,13 +8,6 @@ namespace Avalonia.SourceGenerator.CompositionGenerator
 {
     public partial class Generator
     {
-        static void CleanDirectory(string path)
-        {
-            Directory.CreateDirectory(path);
-            Directory.Delete(path, true);
-            Directory.CreateDirectory(path);
-        }
-        
         CompilationUnitSyntax Unit()
             => CompilationUnit().WithUsings(List(new[]
                 {
@@ -40,16 +33,6 @@ namespace Avalonia.SourceGenerator.CompositionGenerator
 
         static SyntaxToken Semicolon() => Token(SyntaxKind.SemicolonToken);
 
-
-        static FieldDeclarationSyntax DeclareConstant(string type, string name, LiteralExpressionSyntax value)
-            => FieldDeclaration(
-                    VariableDeclaration(ParseTypeName(type),
-                        SingletonSeparatedList(
-                            VariableDeclarator(name).WithInitializer(EqualsValueClause(value))
-                        ))
-                ).WithSemicolonToken(Semicolon())
-                .WithModifiers(TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.ConstKeyword)));
-
         static FieldDeclarationSyntax DeclareField(string type, string name, params SyntaxKind[] modifiers) =>
             DeclareField(type, name, null, modifiers);
 

src/tools/DevGenerators/CompositionGenerator/Generator.cs

@@ -530,19 +530,6 @@ return;
             return body.AddStatements(ParseStatement(code));
         }
 
-        static ClassDeclarationSyntax WithGetPropertyForAnimation(ClassDeclarationSyntax cl, BlockSyntax body)
-        {
-            if (body.Statements.Count == 0)
-                return cl;
-            body = body.AddStatements(
-                ParseStatement("return base.GetPropertyForAnimation(name);"));
-            var method = ((MethodDeclarationSyntax) ParseMemberDeclaration(
-                    $"public override Avalonia.Rendering.Composition.Expressions.ExpressionVariant GetPropertyForAnimation(string name){{}}")!)
-                .WithBody(body);
-
-            return cl.AddMembers(method);
-        }
-
         static ClassDeclarationSyntax WithGetCompositionProperty(ClassDeclarationSyntax cl, BlockSyntax body)
         {
             if (body.Statements.Count == 0)