Merge pull request #361 from AhmedLSayed9/fix_dropdown_formfield_clips_large_text_scale

Fix DropdownButtonFormField clips text when large text scale is used …

Author: AhmedLSayed9

packages/dropdown_button2/CHANGELOG.md

@@ -12,6 +12,7 @@
 - Add `MenuItemStyleData.useDecorationHorizontalPadding`, used to determine whether to use the horizontal padding from "decoration.contentPadding" for menu items when using `DropdownButtonFormField2`.
 - Use decoration hint text as the default value for dropdown button hints [Flutter core].
 - Update SDK constraints: ">=3.4.0 <4.0.0"
+- Fix DropdownButtonFormField clips text when large text scale is used [Flutter core].
 
 ## 3.0.0-beta.21
 

packages/dropdown_button2/lib/src/dropdown_button2.dart

@@ -644,7 +644,9 @@ class _DropdownButton2State<T> extends State<DropdownButton2<T>> with WidgetsBin
   double get _denseButtonHeight {
     final double fontSize =
         _textStyle!.fontSize ?? Theme.of(context).textTheme.titleMedium!.fontSize!;
-    final double scaledFontSize = MediaQuery.textScalerOf(context).scale(fontSize);
+    final double lineHeight =
+        _textStyle!.height ?? Theme.of(context).textTheme.titleMedium!.height ?? 1.0;
+    final double scaledFontSize = MediaQuery.textScalerOf(context).scale(fontSize * lineHeight);
     return math.max(scaledFontSize, math.max(_iconStyle.iconSize, _kDenseButtonHeight));
   }