[RenderParagraph] - Should call markNeedsLayout in the textAlign setter #140756
Description
Steps to reproduce
- Use the provided reproduction code
- Tap on the text to change the alignment from left to right
Expected results
The LayoutBuilder surrounding the Text widget should build again, because the layout of its descendantText changed.
Actual results
The LayoutBuilder doesn't run again because the descendant Text didn't report a layout change. It only reported dirty paint.
Code sample
Code sample
import 'package:flutter/material.dart';
const Color darkBlue = Color.fromARGB(255, 18, 32, 47);
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData.dark().copyWith(
scaffoldBackgroundColor: darkBlue,
),
debugShowCheckedModeBanner: false,
home: Scaffold(
body: MyWidget(),
),
);
}
}
class MyWidget extends StatefulWidget {
@override
State<MyWidget> createState() => _MyWidgetState();
}
class _MyWidgetState extends State<MyWidget> {
@override
Widget build(BuildContext context) {
return LayoutBuilder(
builder: (context, constraints) {
print("Running LayoutBuilder");
return SizedBox(
width: double.infinity,
child: TextAlignChanger(),
);
}
);
}
}
class TextAlignChanger extends StatefulWidget {
@override
State<TextAlignChanger> createState() => _TextAlignChangerState();
}
class _TextAlignChangerState extends State<TextAlignChanger> {
TextAlign _textAlign = TextAlign.left;
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: () => setState(() {
print("Changing text alignment to the right");
_textAlign = TextAlign.right;
}),
child: Text(
'Hello, World!',
textAlign: _textAlign,
style: Theme.of(context).textTheme.headlineMedium,
),
);
}
}Screenshots or Video
No response
Logs
No response
Flutter Doctor output
Reproduced in Dart Pad: Based on Flutter 3.16.5 Dart SDK 3.2.3