ImageButton border (BorderWidth) overlaps the image instead of adding space - fix

src/Controls/tests/TestCases.HostApp/Issues/Issue24856.xaml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<controls:TestContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+			       xmlns:controls="clr-namespace:Maui.Controls.Sample.Issues"
+             xmlns:cmp="clr-namespace:Microsoft.Maui.Controls.Compatibility;assembly=Microsoft.Maui.Controls"
+             x:Class="Maui.Controls.Sample.Issues.Issue24856">
+    <ContentPage.Content>
+    <VerticalStackLayout>
+      <Label 
+        AutomationId="WaitForStubControl"
+        Text="Issue 24856"/>
+      <ImageButton 
+        Source="avatar.png" 
+        CornerRadius="10" 
+        BorderColor="Red" 
+        BorderWidth="3" 
+        Aspect="AspectFit" 
+        BackgroundColor="Yellow"
+        WidthRequest="80"
+        HeightRequest="80" 
+        HorizontalOptions="StartAndExpand" 
+        Margin="24"/>
+    </VerticalStackLayout>
+  </ContentPage.Content>
+</controls:TestContentPage>

src/Controls/tests/TestCases.HostApp/Issues/Issue24856.xaml.cs

@@ -0,0 +1,17 @@
+namespace Maui.Controls.Sample.Issues
+{
+
+	[Issue(IssueTracker.Github, 24856, "Android ImageButton Aspect=AspectFit not display correctly", PlatformAffected.Android)]
+	public partial class Issue24856 : TestContentPage
+	{
+		public Issue24856()
+		{
+			InitializeComponent();
+		}
+
+		protected override void Init()
+		{
+
+		}
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue24856.cs

@@ -0,0 +1,26 @@
+#if ANDROID
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues
+{
+	public class Issue24856 : _IssuesUITest
+	{
+		public override string Issue => "Android ImageButton Aspect=AspectFit not display correctly";
+
+		public Issue24856(TestDevice device)
+		: base(device)
+		{ }
+
+		[Test]
+		[Category(UITestCategories.ImageButton)]
+		public void ImageButtonAspectFitWorks()
+		{
+			App.WaitForElement("WaitForStubControl");
+
+			VerifyScreenshot();
+		}
+	}
+}
+#endif

src/Core/src/Handlers/ImageButton/ImageButtonHandler.Android.cs

@@ -53,11 +53,13 @@ public static void MapStrokeColor(IImageButtonHandler handler, IButtonStroke but
 		public static void MapStrokeThickness(IImageButtonHandler handler, IButtonStroke buttonStroke)
 		{
 			handler.PlatformView?.UpdateStrokeThickness(buttonStroke);
+			handler.UpdateValue(nameof(IImageButton.Padding));
 		}
 
 		public static void MapCornerRadius(IImageButtonHandler handler, IButtonStroke buttonStroke)
 		{
-			handler.PlatformView.UpdateCornerRadius(buttonStroke);
+			handler.PlatformView?.UpdateCornerRadius(buttonStroke);
+			handler.UpdateValue(nameof(IImageButton.Padding));
 		}
 
 		public static void MapPadding(IImageButtonHandler handler, IImageButton imageButton)

src/Core/src/Handlers/ImageButton/ImageButtonHandler.Tizen.cs

@@ -41,11 +41,13 @@ public static void MapStrokeColor(IImageButtonHandler handler, IButtonStroke but
 		public static void MapStrokeThickness(IImageButtonHandler handler, IButtonStroke buttonStroke)
 		{
 			handler.PlatformView.UpdateStrokeThickness(buttonStroke);
+			handler.UpdateValue(nameof(IImageButton.Padding));
 		}
 
 		public static void MapCornerRadius(IImageButtonHandler handler, IButtonStroke buttonStroke)
 		{
 			handler.PlatformView.UpdateCornerRadius(buttonStroke);
+			handler.UpdateValue(nameof(IImageButton.Padding));
 		}
 
 		[MissingMapper]

src/Core/src/Handlers/ImageButton/ImageButtonHandler.Windows.cs

@@ -78,11 +78,13 @@ public static void MapStrokeColor(IImageButtonHandler handler, IButtonStroke but
 		public static void MapStrokeThickness(IImageButtonHandler handler, IButtonStroke buttonStroke)
 		{
 			(handler.PlatformView as Button)?.UpdateStrokeThickness(buttonStroke);
+			handler.UpdateValue(nameof(IImageButton.Padding));
 		}
 
 		public static void MapCornerRadius(IImageButtonHandler handler, IButtonStroke buttonStroke)
 		{
 			(handler.PlatformView as Button)?.UpdateCornerRadius(buttonStroke);
+			handler.UpdateValue(nameof(IImageButton.Padding));
 		}
 
 		public static void MapBackground(IImageButtonHandler handler, IImageButton imageButton)

src/Core/src/Handlers/ImageButton/ImageButtonHandler.iOS.cs

@@ -45,11 +45,13 @@ public static void MapStrokeColor(IImageButtonHandler handler, IButtonStroke but
 		public static void MapStrokeThickness(IImageButtonHandler handler, IButtonStroke buttonStroke)
 		{
 			handler.PlatformView?.UpdateStrokeThickness(buttonStroke);
+			handler.UpdateValue(nameof(IImageButton.Padding));
 		}
 
 		public static void MapCornerRadius(IImageButtonHandler handler, IButtonStroke buttonStroke)
 		{
 			handler.PlatformView?.UpdateCornerRadius(buttonStroke);
+			handler.UpdateValue(nameof(IImageButton.Padding));
 		}
 
 		public static void MapPadding(IImageButtonHandler handler, IImageButton imageButton)

src/Core/src/Platform/Android/ImageButtonExtensions.cs

@@ -23,6 +23,9 @@ public static void UpdateCornerRadius(this ShapeableImageView platformButton, IB
 		public static async void UpdatePadding(this ShapeableImageView platformButton, IImageButton imageButton)
 		{
 			var padding = platformButton.Context!.ToPixels(imageButton.Padding);
+			var (strokeWidth, _, _) = imageButton.GetStrokeProperties(platformButton.Context!, true);
+			int additionalPadding = strokeWidth;
+			padding = new Thickness(padding.Left + additionalPadding, padding.Top + additionalPadding, padding.Right + additionalPadding, padding.Bottom + additionalPadding);
 
 			// The simple operation we are trying to do.
 			platformButton.SetContentPadding((int)padding.Left, (int)padding.Top, (int)padding.Right, (int)padding.Bottom);

src/Core/src/Platform/iOS/ButtonExtensions.cs

@@ -64,6 +64,9 @@ public static void UpdatePadding(this UIButton platformButton, Thickness padding
 			if (padding.IsNaN)
 				padding = defaultPadding ?? Thickness.Zero;
 
+			int additionalPadding = (int)platformButton.Layer.BorderWidth;
+			padding = new Thickness(padding.Left + additionalPadding, padding.Top + additionalPadding, padding.Right + additionalPadding, padding.Bottom + additionalPadding);
+
 			// top and bottom insets reset to a "default" if they are exactly 0
 			// however, internally they are floor-ed, so there is no actual fractions
 			var top = padding.Top;