Fix Android arrange coordinate conversion

Author: albyrock87

src/Controls/tests/TestCases.Android.Tests/snapshots/android/VerifyTextIsNotMissing.png

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="Maui.Controls.Sample.Issues.Issue17884">
+  <Label Text="CHAT MISSING_WORD"
+         TextColor="Black"
+         AutomationId="StubLabel"
+         x:Name="StubLabel"
+         FontSize="16"
+         FontFamily="MontserratBold"
+         Shadow="{Shadow Offset='0,1', Radius=1, Brush=Aqua}"
+         MaxLines="1"
+         LineBreakMode="NoWrap"
+         VerticalOptions="Center"
+         HorizontalOptions="Center">
+    <Label.GestureRecognizers>
+      <TapGestureRecognizer Tapped="OnStubLabelTapped"/>
+    </Label.GestureRecognizers>
+  </Label>
+</ContentPage>

src/Controls/tests/TestCases.HostApp/Issues/Issue17884.xaml

@@ -0,0 +1,17 @@
+
+namespace Maui.Controls.Sample.Issues
+{
+	[Issue(IssueTracker.Github, 17884, "[Android] Entire words omitted & letters truncated from Label display", PlatformAffected.Android)]
+   public partial class Issue17884 : ContentPage
+    {
+        public Issue17884()
+        {
+            InitializeComponent();
+        }
+
+        private void OnStubLabelTapped(object sender, EventArgs e)
+        {
+	        ++StubLabel.FontSize;
+        }
+    }
+}

src/Controls/tests/TestCases.HostApp/Issues/Issue17884.xaml.cs

@@ -21,6 +21,7 @@ public static MauiApp CreateMauiApp()
 					fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
 					fonts.AddFont("FontAwesome.ttf", "FA");
 					fonts.AddFont("ionicons.ttf", "Ion");
+					fonts.AddFont("Montserrat-Bold.otf", "MontserratBold");
 				})
 				.RenderingPerformanceAddMappers()
 				.Issue21109AddMappers()

src/Controls/tests/TestCases.HostApp/MauiProgram.cs

@@ -0,0 +1,25 @@
+#if ANDROID
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues
+{
+	public class Issue17884 : _IssuesUITest
+	{
+		public Issue17884(TestDevice device)
+			: base(device)
+		{ }
+
+		public override string Issue => "[Android] Entire words omitted & letters truncated from Label display";
+
+		[Test]
+		[Category(UITestCategories.Visual)]
+		public void VerifyTextIsNotMissing()
+		{
+			App.WaitForElement("StubLabel");
+			VerifyScreenshot();
+		}
+	}
+}
+#endif

src/Controls/tests/TestCases.HostApp/Resources/Fonts/Montserrat-Bold.otf

@@ -102,10 +102,10 @@ internal static void PlatformArrangeHandler(this IViewHandler viewHandler, Rect
 		{
 			var platformView = viewHandler.ToPlatform();
 
-			var Context = viewHandler.MauiContext?.Context;
-			var MauiContext = viewHandler.MauiContext;
+			var context = viewHandler.MauiContext?.Context;
+			var mauiContext = viewHandler.MauiContext;
 
-			if (platformView == null || MauiContext == null || Context == null)
+			if (platformView == null || mauiContext == null || context == null)
 			{
 				return;
 			}
@@ -116,10 +116,7 @@ internal static void PlatformArrangeHandler(this IViewHandler viewHandler, Rect
 				return;
 			}
 
-			var left = Context.ToPixels(frame.Left);
-			var top = Context.ToPixels(frame.Top);
-			var bottom = Context.ToPixels(frame.Bottom);
-			var right = Context.ToPixels(frame.Right);
+			var (left, top, right, bottom) = context.ToPixels(frame);
 
 			var viewParent = platformView.Parent;
 			if (viewParent?.LayoutDirection == LayoutDirection.Rtl && viewParent is View parentView)
@@ -130,7 +127,7 @@ internal static void PlatformArrangeHandler(this IViewHandler viewHandler, Rect
 				right = left + width;
 			}
 
-			platformView.Layout((int)left, (int)top, (int)right, (int)bottom);
+			platformView.Layout(left, top, right, bottom);
 
 			viewHandler.Invoke(nameof(IView.Frame), frame);
 		}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue17884.cs

@@ -104,15 +104,36 @@ public static float ToPixels(this Context? self, double dp)
 			return (float)Math.Ceiling(dp * s_displayDensity);
 		}
 
+		/// <summary>
+		/// Converts dp to pixels, rounding to the nearest whole pixel.
+		/// </summary>
+		/// <remarks>
+		/// This is especially useful when converting coordinates to the nearest pixel.
+		/// Do not use this method when setting sizes, as it may lead to visual truncation of the content
+		/// when rounding down.
+		/// </remarks>
+		internal static float ToPixelsRound(this Context? self, double dp)
+		{
+			EnsureMetrics(self);
+
+			return (float)Math.Round(dp * s_displayDensity, MidpointRounding.AwayFromZero);
+		}
+
 		public static (int left, int top, int right, int bottom) ToPixels(this Context context, Graphics.Rect rectangle)
 		{
-			return
-			(
-				(int)context.ToPixels(rectangle.Left),
-				(int)context.ToPixels(rectangle.Top),
-				(int)context.ToPixels(rectangle.Right),
-				(int)context.ToPixels(rectangle.Bottom)
-			);
+			// Use `ToPixels` to get enough pixels to display the whole content
+			var width = (int)context.ToPixels(rectangle.Width);
+			var height = (int)context.ToPixels(rectangle.Height);
+			// Use `ToPixelsRound` to position the content on the nearest pixel
+			var left = (int)context.ToPixelsRound(rectangle.Left);
+			var top = (int)context.ToPixelsRound(rectangle.Top);
+
+			// Compute the right and bottom edges based on platform-specific sizes
+			// Do NOT compute them based on the rectangle's right and bottom as it may lead to visual truncation
+			var right = left + width;
+			var bottom = top + height;
+
+			return (left, top, right, bottom);
 		}
 
 		public static Thickness ToPixels(this Context context, Thickness thickness)