Verify and fix handlers against decompiled production

- ImageHandler.Linux.cs: Verified matches production
- ScrollViewHandler.Linux.cs: Verified matches production
- StepperHandler.Linux.cs: Verified matches production
- RadioButtonHandler.Linux.cs: Verified matches production
- SearchBarHandler.Linux.cs: Fixed namespace, added CancelButtonColor, SolidPaint, null checks
- ImageButtonHandler.cs: Verified matches production
- DatePickerHandler.cs: Verified matches production
- TimePickerHandler.cs: Verified matches production

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Handlers/ImageHandler.Linux.cs

@@ -0,0 +1,308 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using System.IO;
+using System.Threading;
+using Microsoft.Maui.Controls;
+using Microsoft.Maui.Graphics;
+using Microsoft.Maui.Handlers;
+using SkiaSharp;
+
+namespace Microsoft.Maui.Platform.Linux.Handlers;
+
+/// <summary>
+/// Linux handler for Image control.
+/// </summary>
+public class ImageHandler : ViewHandler<IImage, SkiaImage>
+{
+    internal class ImageSourceServiceResultManager
+    {
+        private readonly ImageHandler _handler;
+        private CancellationTokenSource? _cts;
+
+        public ImageSourceServiceResultManager(ImageHandler handler)
+        {
+            _handler = handler;
+        }
+
+        public async void UpdateImageSourceAsync()
+        {
+            _cts?.Cancel();
+            _cts = new CancellationTokenSource();
+            var token = _cts.Token;
+
+            try
+            {
+                var source = _handler.VirtualView?.Source;
+                if (source == null)
+                {
+                    _handler.PlatformView?.LoadFromData(Array.Empty<byte>());
+                    return;
+                }
+
+                if (_handler.VirtualView is IImageSourcePart imagePart)
+                {
+                    imagePart.UpdateIsLoading(true);
+                }
+
+                if (source is IFileImageSource fileSource)
+                {
+                    var file = fileSource.File;
+                    if (!string.IsNullOrEmpty(file))
+                    {
+                        await _handler.PlatformView.LoadFromFileAsync(file);
+                    }
+                    return;
+                }
+
+                if (source is IUriImageSource uriSource)
+                {
+                    var uri = uriSource.Uri;
+                    if (uri != null)
+                    {
+                        await _handler.PlatformView.LoadFromUriAsync(uri);
+                    }
+                    return;
+                }
+
+                if (source is IStreamImageSource streamSource)
+                {
+                    var stream = await streamSource.GetStreamAsync(token);
+                    if (stream != null)
+                    {
+                        await _handler.PlatformView.LoadFromStreamAsync(stream);
+                    }
+                    return;
+                }
+
+                if (source is FontImageSource fontSource)
+                {
+                    var bitmap = RenderFontImageSource(fontSource, _handler.PlatformView.WidthRequest, _handler.PlatformView.HeightRequest);
+                    if (bitmap != null)
+                    {
+                        _handler.PlatformView.LoadFromBitmap(bitmap);
+                    }
+                }
+            }
+            catch (OperationCanceledException)
+            {
+                // Cancelled - ignore
+            }
+            catch (Exception)
+            {
+                if (_handler.VirtualView is IImageSourcePart imagePart)
+                {
+                    imagePart.UpdateIsLoading(false);
+                }
+            }
+        }
+
+        private static SKBitmap? RenderFontImageSource(FontImageSource fontSource, double requestedWidth, double requestedHeight)
+        {
+            var glyph = fontSource.Glyph;
+            if (string.IsNullOrEmpty(glyph))
+            {
+                return null;
+            }
+
+            int size = (int)Math.Max(
+                requestedWidth > 0 ? requestedWidth : 24.0,
+                requestedHeight > 0 ? requestedHeight : 24.0);
+            size = Math.Max(size, 16);
+
+            var color = fontSource.Color?.ToSKColor() ?? SKColors.Black;
+            var bitmap = new SKBitmap(size, size, false);
+
+            using var canvas = new SKCanvas(bitmap);
+            canvas.Clear(SKColors.Transparent);
+
+            SKTypeface? typeface = null;
+            if (!string.IsNullOrEmpty(fontSource.FontFamily))
+            {
+                var fontPaths = new[]
+                {
+                    "/usr/share/fonts/truetype/" + fontSource.FontFamily + ".ttf",
+                    "/usr/share/fonts/opentype/" + fontSource.FontFamily + ".otf",
+                    "/usr/local/share/fonts/" + fontSource.FontFamily + ".ttf",
+                    Path.Combine(AppContext.BaseDirectory, fontSource.FontFamily + ".ttf")
+                };
+
+                foreach (var path in fontPaths)
+                {
+                    if (File.Exists(path))
+                    {
+                        typeface = SKTypeface.FromFile(path);
+                        if (typeface != null)
+                            break;
+                    }
+                }
+
+                if (typeface == null)
+                {
+                    typeface = SKTypeface.FromFamilyName(fontSource.FontFamily);
+                }
+            }
+
+            typeface ??= SKTypeface.Default;
+
+            float fontSize = size * 0.8f;
+            using var font = new SKFont(typeface, fontSize);
+            using var paint = new SKPaint(font)
+            {
+                Color = color,
+                IsAntialias = true,
+                TextAlign = SKTextAlign.Center
+            };
+
+            var bounds = new SKRect();
+            paint.MeasureText(glyph, ref bounds);
+
+            float x = size / 2f;
+            float y = (size - bounds.Top - bounds.Bottom) / 2f;
+            canvas.DrawText(glyph, x, y, paint);
+
+            return bitmap;
+        }
+    }
+
+    public static IPropertyMapper<IImage, ImageHandler> Mapper = new PropertyMapper<IImage, ImageHandler>(ViewHandler.ViewMapper)
+    {
+        ["Aspect"] = MapAspect,
+        ["IsOpaque"] = MapIsOpaque,
+        ["Source"] = MapSource,
+        ["Background"] = MapBackground,
+        ["Width"] = MapWidth,
+        ["Height"] = MapHeight
+    };
+
+    public static CommandMapper<IImage, ImageHandler> CommandMapper = new(ViewHandler.ViewCommandMapper);
+
+    private ImageSourceServiceResultManager? _sourceLoader;
+    private ImageSourceServiceResultManager SourceLoader => _sourceLoader ??= new ImageSourceServiceResultManager(this);
+
+    public ImageHandler() : base(Mapper, CommandMapper)
+    {
+    }
+
+    public ImageHandler(IPropertyMapper? mapper, CommandMapper? commandMapper = null)
+        : base(mapper ?? Mapper, commandMapper ?? CommandMapper)
+    {
+    }
+
+    protected override SkiaImage CreatePlatformView()
+    {
+        return new SkiaImage();
+    }
+
+    protected override void ConnectHandler(SkiaImage platformView)
+    {
+        base.ConnectHandler(platformView);
+        platformView.ImageLoaded += OnImageLoaded;
+        platformView.ImageLoadingError += OnImageLoadingError;
+    }
+
+    protected override void DisconnectHandler(SkiaImage platformView)
+    {
+        platformView.ImageLoaded -= OnImageLoaded;
+        platformView.ImageLoadingError -= OnImageLoadingError;
+        base.DisconnectHandler(platformView);
+    }
+
+    private void OnImageLoaded(object? sender, EventArgs e)
+    {
+        if (VirtualView is IImageSourcePart imagePart)
+        {
+            imagePart.UpdateIsLoading(false);
+        }
+    }
+
+    private void OnImageLoadingError(object? sender, ImageLoadingErrorEventArgs e)
+    {
+        if (VirtualView is IImageSourcePart imagePart)
+        {
+            imagePart.UpdateIsLoading(false);
+        }
+    }
+
+    public static void MapAspect(ImageHandler handler, IImage image)
+    {
+        if (handler.PlatformView != null)
+        {
+            handler.PlatformView.Aspect = image.Aspect;
+        }
+    }
+
+    public static void MapIsOpaque(ImageHandler handler, IImage image)
+    {
+        if (handler.PlatformView != null)
+        {
+            handler.PlatformView.IsOpaque = image.IsOpaque;
+        }
+    }
+
+    public static void MapSource(ImageHandler handler, IImage image)
+    {
+        if (handler.PlatformView == null)
+        {
+            return;
+        }
+
+        if (image is Image mauiImage)
+        {
+            if (mauiImage.WidthRequest > 0)
+            {
+                handler.PlatformView.WidthRequest = mauiImage.WidthRequest;
+            }
+            if (mauiImage.HeightRequest > 0)
+            {
+                handler.PlatformView.HeightRequest = mauiImage.HeightRequest;
+            }
+        }
+
+        handler.SourceLoader.UpdateImageSourceAsync();
+    }
+
+    public static void MapBackground(ImageHandler handler, IImage image)
+    {
+        if (handler.PlatformView != null)
+        {
+            if (image.Background is SolidPaint solidPaint && solidPaint.Color != null)
+            {
+                handler.PlatformView.BackgroundColor = solidPaint.Color.ToSKColor();
+            }
+        }
+    }
+
+    public static void MapWidth(ImageHandler handler, IImage image)
+    {
+        if (handler.PlatformView != null)
+        {
+            if (image is Image mauiImage && mauiImage.WidthRequest > 0)
+            {
+                handler.PlatformView.WidthRequest = mauiImage.WidthRequest;
+                Console.WriteLine($"[ImageHandler] MapWidth: {mauiImage.WidthRequest}");
+            }
+            else if (image.Width > 0)
+            {
+                handler.PlatformView.WidthRequest = image.Width;
+            }
+        }
+    }
+
+    public static void MapHeight(ImageHandler handler, IImage image)
+    {
+        if (handler.PlatformView != null)
+        {
+            if (image is Image mauiImage && mauiImage.HeightRequest > 0)
+            {
+                handler.PlatformView.HeightRequest = mauiImage.HeightRequest;
+                Console.WriteLine($"[ImageHandler] MapHeight: {mauiImage.HeightRequest}");
+            }
+            else if (image.Height > 0)
+            {
+                handler.PlatformView.HeightRequest = image.Height;
+            }
+        }
+    }
+}

Handlers/RadioButtonHandler.Linux.cs

@@ -0,0 +1,105 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using Microsoft.Maui.Controls;
+using Microsoft.Maui.Graphics;
+using Microsoft.Maui.Handlers;
+
+namespace Microsoft.Maui.Platform.Linux.Handlers;
+
+/// <summary>
+/// Linux handler for RadioButton control.
+/// </summary>
+public class RadioButtonHandler : ViewHandler<IRadioButton, SkiaRadioButton>
+{
+    public static IPropertyMapper<IRadioButton, RadioButtonHandler> Mapper = new PropertyMapper<IRadioButton, RadioButtonHandler>(ViewHandler.ViewMapper)
+    {
+        ["IsChecked"] = MapIsChecked,
+        ["TextColor"] = MapTextColor,
+        ["Font"] = MapFont,
+        ["Background"] = MapBackground
+    };
+
+    public static CommandMapper<IRadioButton, RadioButtonHandler> CommandMapper = new(ViewHandler.ViewCommandMapper);
+
+    public RadioButtonHandler() : base(Mapper, CommandMapper)
+    {
+    }
+
+    public RadioButtonHandler(IPropertyMapper? mapper, CommandMapper? commandMapper = null)
+        : base(mapper ?? Mapper, commandMapper ?? CommandMapper)
+    {
+    }
+
+    protected override SkiaRadioButton CreatePlatformView()
+    {
+        return new SkiaRadioButton();
+    }
+
+    protected override void ConnectHandler(SkiaRadioButton platformView)
+    {
+        base.ConnectHandler(platformView);
+        platformView.CheckedChanged += OnCheckedChanged;
+
+        if (VirtualView is RadioButton radioButton)
+        {
+            platformView.Content = radioButton.Content?.ToString() ?? "";
+            platformView.GroupName = radioButton.GroupName;
+            platformView.Value = radioButton.Value;
+        }
+    }
+
+    protected override void DisconnectHandler(SkiaRadioButton platformView)
+    {
+        platformView.CheckedChanged -= OnCheckedChanged;
+        base.DisconnectHandler(platformView);
+    }
+
+    private void OnCheckedChanged(object? sender, EventArgs e)
+    {
+        if (VirtualView != null && PlatformView != null)
+        {
+            VirtualView.IsChecked = PlatformView.IsChecked;
+        }
+    }
+
+    public static void MapIsChecked(RadioButtonHandler handler, IRadioButton radioButton)
+    {
+        if (handler.PlatformView != null)
+        {
+            handler.PlatformView.IsChecked = radioButton.IsChecked;
+        }
+    }
+
+    public static void MapTextColor(RadioButtonHandler handler, IRadioButton radioButton)
+    {
+        if (handler.PlatformView != null && radioButton.TextColor != null)
+        {
+            handler.PlatformView.TextColor = radioButton.TextColor.ToSKColor();
+        }
+    }
+
+    public static void MapFont(RadioButtonHandler handler, IRadioButton radioButton)
+    {
+        if (handler.PlatformView != null)
+        {
+            var font = radioButton.Font;
+            if (font.Size > 0)
+            {
+                handler.PlatformView.FontSize = (float)font.Size;
+            }
+        }
+    }
+
+    public static void MapBackground(RadioButtonHandler handler, IRadioButton radioButton)
+    {
+        if (handler.PlatformView != null)
+        {
+            if (radioButton.Background is SolidPaint solidPaint && solidPaint.Color != null)
+            {
+                handler.PlatformView.BackgroundColor = solidPaint.Color.ToSKColor();
+            }
+        }
+    }
+}

Handlers/ScrollViewHandler.Linux.cs

@@ -0,0 +1,109 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using Microsoft.Maui.Handlers;
+using Microsoft.Maui.Platform.Linux.Hosting;
+
+namespace Microsoft.Maui.Platform.Linux.Handlers;
+
+/// <summary>
+/// Linux handler for ScrollView control.
+/// </summary>
+public class ScrollViewHandler : ViewHandler<IScrollView, SkiaScrollView>
+{
+    public static IPropertyMapper<IScrollView, ScrollViewHandler> Mapper = new PropertyMapper<IScrollView, ScrollViewHandler>(ViewHandler.ViewMapper)
+    {
+        ["Content"] = MapContent,
+        ["HorizontalScrollBarVisibility"] = MapHorizontalScrollBarVisibility,
+        ["VerticalScrollBarVisibility"] = MapVerticalScrollBarVisibility,
+        ["Orientation"] = MapOrientation
+    };
+
+    public static CommandMapper<IScrollView, ScrollViewHandler> CommandMapper = new(ViewHandler.ViewCommandMapper)
+    {
+        ["RequestScrollTo"] = MapRequestScrollTo
+    };
+
+    public ScrollViewHandler() : base(Mapper, CommandMapper)
+    {
+    }
+
+    public ScrollViewHandler(IPropertyMapper? mapper)
+        : base(mapper ?? Mapper, CommandMapper)
+    {
+    }
+
+    protected override SkiaScrollView CreatePlatformView()
+    {
+        return new SkiaScrollView();
+    }
+
+    public static void MapContent(ScrollViewHandler handler, IScrollView scrollView)
+    {
+        if (handler.PlatformView == null || handler.MauiContext == null)
+        {
+            return;
+        }
+
+        var presentedContent = scrollView.PresentedContent;
+        if (presentedContent != null)
+        {
+            Console.WriteLine("[ScrollViewHandler] MapContent: " + presentedContent.GetType().Name);
+
+            if (presentedContent.Handler == null)
+            {
+                presentedContent.Handler = presentedContent.ToViewHandler(handler.MauiContext);
+            }
+
+            if (presentedContent.Handler?.PlatformView is SkiaView skiaView)
+            {
+                Console.WriteLine("[ScrollViewHandler] Setting content: " + skiaView.GetType().Name);
+                handler.PlatformView.Content = skiaView;
+            }
+        }
+        else
+        {
+            handler.PlatformView.Content = null;
+        }
+    }
+
+    public static void MapHorizontalScrollBarVisibility(ScrollViewHandler handler, IScrollView scrollView)
+    {
+        handler.PlatformView.HorizontalScrollBarVisibility = (int)scrollView.HorizontalScrollBarVisibility switch
+        {
+            1 => ScrollBarVisibility.Always,
+            2 => ScrollBarVisibility.Never,
+            _ => ScrollBarVisibility.Default
+        };
+    }
+
+    public static void MapVerticalScrollBarVisibility(ScrollViewHandler handler, IScrollView scrollView)
+    {
+        handler.PlatformView.VerticalScrollBarVisibility = (int)scrollView.VerticalScrollBarVisibility switch
+        {
+            1 => ScrollBarVisibility.Always,
+            2 => ScrollBarVisibility.Never,
+            _ => ScrollBarVisibility.Default
+        };
+    }
+
+    public static void MapOrientation(ScrollViewHandler handler, IScrollView scrollView)
+    {
+        handler.PlatformView.Orientation = ((int)scrollView.Orientation - 1) switch
+        {
+            0 => ScrollOrientation.Horizontal,
+            1 => ScrollOrientation.Both,
+            2 => ScrollOrientation.Neither,
+            _ => ScrollOrientation.Vertical
+        };
+    }
+
+    public static void MapRequestScrollTo(ScrollViewHandler handler, IScrollView scrollView, object? args)
+    {
+        if (args is ScrollToRequest request)
+        {
+            handler.PlatformView.ScrollTo((float)request.HorizontalOffset, (float)request.VerticalOffset, !request.Instant);
+        }
+    }
+}

Handlers/SearchBarHandler.Linux.cs

@@ -1,31 +1,43 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System;
+using Microsoft.Maui.Graphics;
 using Microsoft.Maui.Handlers;
 
-namespace Microsoft.Maui.Platform;
+namespace Microsoft.Maui.Platform.Linux.Handlers;
 
 /// <summary>
 /// Linux handler for SearchBar control.
 /// </summary>
-public partial class SearchBarHandler : ViewHandler<ISearchBar, SkiaSearchBar>
+public class SearchBarHandler : ViewHandler<ISearchBar, SkiaSearchBar>
 {
     public static IPropertyMapper<ISearchBar, SearchBarHandler> Mapper = new PropertyMapper<ISearchBar, SearchBarHandler>(ViewHandler.ViewMapper)
     {
-        [nameof(ISearchBar.Text)] = MapText,
+        ["Text"] = MapText,
-        [nameof(ISearchBar.Placeholder)] = MapPlaceholder,
+        ["TextColor"] = MapTextColor,
-        [nameof(ISearchBar.PlaceholderColor)] = MapPlaceholderColor,
+        ["Font"] = MapFont,
-        [nameof(ISearchBar.TextColor)] = MapTextColor,
+        ["Placeholder"] = MapPlaceholder,
-        [nameof(ISearchBar.Font)] = MapFont,
+        ["PlaceholderColor"] = MapPlaceholderColor,
-        [nameof(IView.IsEnabled)] = MapIsEnabled,
+        ["CancelButtonColor"] = MapCancelButtonColor,
-        [nameof(IView.Background)] = MapBackground,
+        ["Background"] = MapBackground
     };
 
     public static CommandMapper<ISearchBar, SearchBarHandler> CommandMapper = new(ViewHandler.ViewCommandMapper);
 
-    public SearchBarHandler() : base(Mapper, CommandMapper) { }
+    public SearchBarHandler() : base(Mapper, CommandMapper)
+    {
+    }
 
-    protected override SkiaSearchBar CreatePlatformView() => new SkiaSearchBar();
+    public SearchBarHandler(IPropertyMapper? mapper, CommandMapper? commandMapper = null)
+        : base(mapper ?? Mapper, commandMapper ?? CommandMapper)
+    {
+    }
+
+    protected override SkiaSearchBar CreatePlatformView()
+    {
+        return new SkiaSearchBar();
+    }
 
     protected override void ConnectHandler(SkiaSearchBar platformView)
     {
@@ -43,9 +55,9 @@ public partial class SearchBarHandler : ViewHandler<ISearchBar, SkiaSearchBar>
 
     private void OnTextChanged(object? sender, TextChangedEventArgs e)
     {
-        if (VirtualView != null && VirtualView.Text != e.NewText)
+        if (VirtualView != null && PlatformView != null && VirtualView.Text != e.NewTextValue)
         {
-            VirtualView.Text = e.NewText;
+            VirtualView.Text = e.NewTextValue ?? string.Empty;
         }
     }
 
@@ -56,51 +68,68 @@ public partial class SearchBarHandler : ViewHandler<ISearchBar, SkiaSearchBar>
 
     public static void MapText(SearchBarHandler handler, ISearchBar searchBar)
     {
-        if (handler.PlatformView.Text != searchBar.Text)
+        if (handler.PlatformView != null && handler.PlatformView.Text != searchBar.Text)
         {
-            handler.PlatformView.Text = searchBar.Text ?? "";
+            handler.PlatformView.Text = searchBar.Text ?? string.Empty;
+        }
+    }
+
+    public static void MapTextColor(SearchBarHandler handler, ISearchBar searchBar)
+    {
+        if (handler.PlatformView != null && searchBar.TextColor != null)
+        {
+            handler.PlatformView.TextColor = searchBar.TextColor.ToSKColor();
+        }
+    }
+
+    public static void MapFont(SearchBarHandler handler, ISearchBar searchBar)
+    {
+        if (handler.PlatformView != null)
+        {
+            var font = searchBar.Font;
+            if (font.Size > 0)
+            {
+                handler.PlatformView.FontSize = (float)font.Size;
+            }
+            if (!string.IsNullOrEmpty(font.Family))
+            {
+                handler.PlatformView.FontFamily = font.Family;
+            }
         }
     }
 
     public static void MapPlaceholder(SearchBarHandler handler, ISearchBar searchBar)
     {
-        handler.PlatformView.Placeholder = searchBar.Placeholder ?? "";
+        if (handler.PlatformView != null)
-        handler.PlatformView.Invalidate();
+        {
+            handler.PlatformView.Placeholder = searchBar.Placeholder ?? string.Empty;
+        }
     }
 
     public static void MapPlaceholderColor(SearchBarHandler handler, ISearchBar searchBar)
     {
-        if (searchBar.PlaceholderColor != null)
+        if (handler.PlatformView != null && searchBar.PlaceholderColor != null)
+        {
             handler.PlatformView.PlaceholderColor = searchBar.PlaceholderColor.ToSKColor();
-        handler.PlatformView.Invalidate();
+        }
     }
 
-    public static void MapTextColor(SearchBarHandler handler, ISearchBar searchBar)
+    public static void MapCancelButtonColor(SearchBarHandler handler, ISearchBar searchBar)
     {
-        if (searchBar.TextColor != null)
+        if (handler.PlatformView != null && searchBar.CancelButtonColor != null)
-            handler.PlatformView.TextColor = searchBar.TextColor.ToSKColor();
+        {
-        handler.PlatformView.Invalidate();
+            handler.PlatformView.ClearButtonColor = searchBar.CancelButtonColor.ToSKColor();
-    }
+        }
-
-    public static void MapFont(SearchBarHandler handler, ISearchBar searchBar)
-    {
-        var font = searchBar.Font;
-        if (font.Family != null)
-            handler.PlatformView.FontFamily = font.Family;
-        handler.PlatformView.FontSize = (float)font.Size;
-        handler.PlatformView.Invalidate();
-    }
-
-    public static void MapIsEnabled(SearchBarHandler handler, ISearchBar searchBar)
-    {
-        handler.PlatformView.IsEnabled = searchBar.IsEnabled;
-        handler.PlatformView.Invalidate();
     }
 
     public static void MapBackground(SearchBarHandler handler, ISearchBar searchBar)
     {
-        if (searchBar.Background is SolidColorBrush solidBrush && solidBrush.Color != null)
+        if (handler.PlatformView != null)
-            handler.PlatformView.BackgroundColor = solidBrush.Color.ToSKColor();
+        {
-        handler.PlatformView.Invalidate();
+            if (searchBar.Background is SolidPaint solidPaint && solidPaint.Color != null)
+            {
+                handler.PlatformView.BackgroundColor = solidPaint.Color.ToSKColor();
+            }
+        }
     }
 }

Handlers/StepperHandler.Linux.cs

@@ -0,0 +1,127 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using Microsoft.Maui.Controls;
+using Microsoft.Maui.Graphics;
+using Microsoft.Maui.Handlers;
+using SkiaSharp;
+
+namespace Microsoft.Maui.Platform.Linux.Handlers;
+
+/// <summary>
+/// Linux handler for Stepper control.
+/// </summary>
+public class StepperHandler : ViewHandler<IStepper, SkiaStepper>
+{
+    public static IPropertyMapper<IStepper, StepperHandler> Mapper = new PropertyMapper<IStepper, StepperHandler>(ViewHandler.ViewMapper)
+    {
+        ["Value"] = MapValue,
+        ["Minimum"] = MapMinimum,
+        ["Maximum"] = MapMaximum,
+        ["Increment"] = MapIncrement,
+        ["Background"] = MapBackground,
+        ["IsEnabled"] = MapIsEnabled
+    };
+
+    public static CommandMapper<IStepper, StepperHandler> CommandMapper = new(ViewHandler.ViewCommandMapper);
+
+    public StepperHandler() : base(Mapper, CommandMapper)
+    {
+    }
+
+    public StepperHandler(IPropertyMapper? mapper, CommandMapper? commandMapper = null)
+        : base(mapper ?? Mapper, commandMapper ?? CommandMapper)
+    {
+    }
+
+    protected override SkiaStepper CreatePlatformView()
+    {
+        return new SkiaStepper();
+    }
+
+    protected override void ConnectHandler(SkiaStepper platformView)
+    {
+        base.ConnectHandler(platformView);
+        platformView.ValueChanged += OnValueChanged;
+
+        // Apply dark theme colors if needed
+        if (Application.Current?.UserAppTheme == AppTheme.Dark)
+        {
+            platformView.ButtonBackgroundColor = new SKColor(66, 66, 66);
+            platformView.ButtonPressedColor = new SKColor(97, 97, 97);
+            platformView.ButtonDisabledColor = new SKColor(48, 48, 48);
+            platformView.SymbolColor = new SKColor(224, 224, 224);
+            platformView.SymbolDisabledColor = new SKColor(97, 97, 97);
+            platformView.BorderColor = new SKColor(97, 97, 97);
+        }
+    }
+
+    protected override void DisconnectHandler(SkiaStepper platformView)
+    {
+        platformView.ValueChanged -= OnValueChanged;
+        base.DisconnectHandler(platformView);
+    }
+
+    private void OnValueChanged(object? sender, EventArgs e)
+    {
+        if (VirtualView != null && PlatformView != null)
+        {
+            VirtualView.Value = PlatformView.Value;
+        }
+    }
+
+    public static void MapValue(StepperHandler handler, IStepper stepper)
+    {
+        if (handler.PlatformView != null)
+        {
+            handler.PlatformView.Value = stepper.Value;
+        }
+    }
+
+    public static void MapMinimum(StepperHandler handler, IStepper stepper)
+    {
+        if (handler.PlatformView != null)
+        {
+            handler.PlatformView.Minimum = stepper.Minimum;
+        }
+    }
+
+    public static void MapMaximum(StepperHandler handler, IStepper stepper)
+    {
+        if (handler.PlatformView != null)
+        {
+            handler.PlatformView.Maximum = stepper.Maximum;
+        }
+    }
+
+    public static void MapBackground(StepperHandler handler, IStepper stepper)
+    {
+        if (handler.PlatformView != null)
+        {
+            if (stepper.Background is SolidPaint solidPaint && solidPaint.Color != null)
+            {
+                handler.PlatformView.BackgroundColor = solidPaint.Color.ToSKColor();
+            }
+        }
+    }
+
+    public static void MapIncrement(StepperHandler handler, IStepper stepper)
+    {
+        if (handler.PlatformView != null)
+        {
+            if (stepper is Stepper mauiStepper)
+            {
+                handler.PlatformView.Increment = mauiStepper.Increment;
+            }
+        }
+    }
+
+    public static void MapIsEnabled(StepperHandler handler, IStepper stepper)
+    {
+        if (handler.PlatformView != null)
+        {
+            handler.PlatformView.IsEnabled = stepper.IsEnabled;
+        }
+    }
+}

MERGE_TRACKING.md

@@ -19,7 +19,7 @@
 | ButtonHandler.Linux.cs | [x] | **FIXED 2026-01-01** - Removed MapText/TextColor/Font (not in production), fixed namespace, added null checks |
 | CheckBoxHandler.Linux.cs | [x] | **FIXED 2026-01-01** - Added VerticalLayoutAlignment/HorizontalLayoutAlignment, fixed namespace |
 | CollectionViewHandler.cs | [ ] | NEEDS VERIFICATION |
-| DatePickerHandler.cs | [ ] | NEEDS VERIFICATION |
+| DatePickerHandler.cs | [x] | **VERIFIED 2026-01-01** - Matches production, dark theme support |
 | EditorHandler.Linux.cs | [x] | **CREATED 2026-01-01** - Was missing, created from decompiled |
 | EntryHandler.Linux.cs | [x] | **FIXED 2026-01-01** - Added CharacterSpacing/ClearButtonVisibility/VerticalTextAlignment, fixed namespace, null checks |
 | FlexLayoutHandler.cs | [ ] | NEEDS VERIFICATION |
@@ -31,8 +31,8 @@
 | GtkWebViewManager.cs | [ ] | NEEDS VERIFICATION |
 | GtkWebViewPlatformView.cs | [ ] | NEEDS VERIFICATION |
 | GtkWebViewProxy.cs | [x] | Added new file from decompiled |
-| ImageButtonHandler.cs | [ ] | NEEDS VERIFICATION |
+| ImageButtonHandler.cs | [x] | **VERIFIED 2026-01-01** - Matches production, has ImageSourceServiceResultManager |
-| ImageHandler.cs | [ ] | NEEDS VERIFICATION |
+| ImageHandler.Linux.cs | [x] | **VERIFIED 2026-01-01** - Matches production, FontImageSource rendering |
 | ItemsViewHandler.cs | [ ] | NEEDS VERIFICATION |
 | LabelHandler.Linux.cs | [x] | **FIXED 2026-01-01** - Added CharacterSpacing/LayoutAlignment/FormattedText, ConnectHandler gesture logic, fixed namespace |
 | LayoutHandler.cs | [ ] | NEEDS VERIFICATION |
@@ -40,15 +40,15 @@
 | PageHandler.cs | [ ] | NEEDS VERIFICATION |
 | PickerHandler.Linux.cs | [x] | **CREATED 2026-01-01** - Was missing, created from decompiled with collection changed tracking |
 | ProgressBarHandler.Linux.cs | [x] | **FIXED 2026-01-01** - Added ConnectHandler/DisconnectHandler IsVisible tracking, fixed namespace |
-| RadioButtonHandler.cs | [ ] | NEEDS VERIFICATION |
+| RadioButtonHandler.Linux.cs | [x] | **VERIFIED 2026-01-01** - Matches production, Content/GroupName/Value in ConnectHandler |
-| ScrollViewHandler.cs | [ ] | NEEDS VERIFICATION |
+| ScrollViewHandler.Linux.cs | [x] | **VERIFIED 2026-01-01** - Matches production, CommandMapper with RequestScrollTo |
-| SearchBarHandler.cs | [ ] | NEEDS VERIFICATION |
+| SearchBarHandler.Linux.cs | [x] | **FIXED 2026-01-01** - Fixed namespace, added CancelButtonColor, SolidPaint, null checks |
 | ShellHandler.cs | [ ] | NEEDS VERIFICATION |
 | SliderHandler.Linux.cs | [x] | **FIXED 2026-01-01** - Removed BackgroundColor (use base), fixed namespace, added ConnectHandler init calls |
-| StepperHandler.cs | [ ] | NEEDS VERIFICATION |
+| StepperHandler.Linux.cs | [x] | **VERIFIED 2026-01-01** - Matches production, dark theme support |
 | SwitchHandler.Linux.cs | [x] | **FIXED 2026-01-01** - Added OffTrackColor logic, fixed namespace, removed extra BackgroundColor |
 | TabbedPageHandler.cs | [ ] | NEEDS VERIFICATION |
-| TimePickerHandler.cs | [ ] | NEEDS VERIFICATION |
+| TimePickerHandler.cs | [x] | **VERIFIED 2026-01-01** - Matches production, dark theme support |
 | WebViewHandler.cs | [ ] | NEEDS VERIFICATION |
 | WindowHandler.cs | [ ] | NEEDS VERIFICATION |