Merge pull request #20965 from ramezgerges/textblock_padding_regression

fix(textblock): adjust rendering offsets to match Padding

Author: ramezgerges

src/Uno.UI.RuntimeTests/Tests/Windows_UI_Xaml_Controls/Given_TextBlock.cs

@@ -1001,6 +1001,25 @@ public async Task When_TextTrimmingNone()
 			Assert.AreEqual(0, states.Count, $"IsTextTrimmedChanged should not proc at all. states: {(string.Join(", ", states) is string { Length: > 0 } tmp ? tmp : "(-empty-)")}");
 		}
 
+		[TestMethod]
+		public async Task When_Padding()
+		{
+			if (!ApiInformation.IsTypePresent("Microsoft.UI.Xaml.Media.Imaging.RenderTargetBitmap"))
+			{
+				Assert.Inconclusive("RenderTargetBitmap is not supported on this platform");
+			}
+
+			var SUT = new TextBlock
+			{
+				Text = "text",
+				Padding = new Thickness(50),
+				Foreground = new SolidColorBrush(Colors.Red),
+			};
+			await UITestHelper.Load(SUT);
+			var screenshot = await UITestHelper.ScreenShot(SUT);
+			ImageAssert.DoesNotHaveColorInRectangle(screenshot, new Rectangle(0, 0, 50, 50), Colors.Red);
+		}
+
 #if HAS_UNO // GetMouse is not available on WinUI
 		#region IsTextSelectionEnabled
 

src/Uno.UI/UI/Xaml/Controls/TextBlock/TextVisual.skia.cs

@@ -31,7 +31,10 @@ internal override void Paint(in PaintingSession session)
 		{
 			if (_owner.TryGetTarget(out var owner))
 			{
+				session.Canvas.Save();
+				session.Canvas.Translate((float)owner.Padding.Left, (float)owner.Padding.Top);
 				owner.Inlines.Draw(in session);
+				session.Canvas.Restore();
 			}
 		}