[release/8.0] Normalize start Text pointer to support Text Cursor Indicator (#10802)

github-actions[bot] · harshit7962 · web-flow · commit cb064c3e2e77 · 2025-04-23T11:30:56.000+05:30
* Normalize start Text pointer at boundingrectangles

* Fix Invariance in TextAdaptor

---------

Co-authored-by: Harshit Mishra &lt;hmishra@microsoft.com&gt;
diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationFramework/System/Windows/Controls/TextAdaptor.cs b/src/Microsoft.DotNet.Wpf/src/PresentationFramework/System/Windows/Controls/TextAdaptor.cs
@@ -115,6 +115,9 @@ internal Rect[] GetBoundingRectangles(ITextPointer start, ITextPointer end, bool
                 return Array.Empty<Rect>();
             }
 
+            start = start.CreatePointer();
+            end = end.CreatePointer();
+
             TextRangeAdaptor.MoveToInsertionPosition(start, LogicalDirection.Forward);
             TextRangeAdaptor.MoveToInsertionPosition(end, LogicalDirection.Backward);
 

Original file line number	Diff line number	Diff line change
`@@ -115,6 +115,9 @@ internal Rect[] GetBoundingRectangles(ITextPointer start, ITextPointer end, bool`
`115`	`115`	`return Array.Empty<Rect>();`
`116`	`116`	`}`
`117`	`117`
	`118`	`+ start = start.CreatePointer();`
	`119`	`+ end = end.CreatePointer();`
	`120`	`+`
`118`	`121`	`TextRangeAdaptor.MoveToInsertionPosition(start, LogicalDirection.Forward);`
`119`	`122`	`TextRangeAdaptor.MoveToInsertionPosition(end, LogicalDirection.Backward);`
`120`	`123`