fix: use DesiredSize.Height for tooltip measurement

Illustar0 · Copilot · web-flow · commit e88d6bd7e377 · 2025-12-05T01:31:56.000+08:00
Co-authored-by: Copilot &lt;175728472+Copilot@users.noreply.github.com&gt;
diff --git a/components/RangeSelector/src/RangeSelector.Input.Drag.cs b/components/RangeSelector/src/RangeSelector.Input.Drag.cs
@@ -108,7 +108,7 @@ private double DragThumbVertical(Thumb? thumb, double min, double max, double ne
         {
             var thumbCenter = nextPos + (thumb.Height / 2);
             _toolTip.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
-            var ttHeight = _toolTip.ActualHeight / 2;
+            var ttHeight = _toolTip.DesiredSize.Height / 2;
 
             Canvas.SetTop(_toolTip, thumbCenter - ttHeight);
             UpdateToolTipPositionForVertical();

Original file line number	Diff line number	Diff line change
`@@ -108,7 +108,7 @@ private double DragThumbVertical(Thumb? thumb, double min, double max, double ne`
`108`	`108`	`{`
`109`	`109`	`var thumbCenter = nextPos + (thumb.Height / 2);`
`110`	`110`	`_toolTip.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));`
`111`		`- var ttHeight = _toolTip.ActualHeight / 2;`
	`111`	`+ var ttHeight = _toolTip.DesiredSize.Height / 2;`
`112`	`112`
`113`	`113`	`Canvas.SetTop(_toolTip, thumbCenter - ttHeight);`
`114`	`114`	`UpdateToolTipPositionForVertical();`