text_wrap_row_thing_boxy.dart

import 'package:flutter/material.dart';
import 'package:boxy/boxy.dart';
import 'dart:math';

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: Center(
          child: MyWidget(),
        ),
      ),
    );
  }
}

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisAlignment: MainAxisAlignment.spaceAround,
      children: [
        CustomBoxy(
          delegate: MyBoxyDelegate(),
          children: [
            Container(
              color: Colors.red,
              child: Text('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'),
            ),
            Container(
              color: Colors.blue,
              child: Text('bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb'),
            ),
          ],
        ),
        CustomBoxy(
          delegate: MyBoxyDelegate(),
          children: [
            Container(
              color: Colors.red,
              child: Text('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'),
            ),
            Container(
              color: Colors.blue,
              child: Text('bbbbbbbbbbbb'),
            ),
          ],
        ),
        CustomBoxy(
          delegate: MyBoxyDelegate(),
          children: [
            Container(
              color: Colors.red,
              child: Text('aaaaaaaaaaaa'),
            ),
            Container(
              color: Colors.blue,
              child: Text('bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb'),
            ),
          ],
        ),
      ],
    );
  }
}

class MyBoxyDelegate extends BoxyDelegate {
  @override
  Size layout() {
    final width = constraints.maxWidth;
    final firstChild = children[0];
    final secondChild = children[1];
    final secondIntrinsicWidth =
        secondChild.render.getMaxIntrinsicWidth(double.infinity);
    final firstSize = firstChild.layout(BoxConstraints(
      maxWidth: max(width / 2, width - secondIntrinsicWidth),
    ));
    final secondSize = secondChild.layout(BoxConstraints.tightFor(
      width: width - firstSize.width,
    ));
    secondChild.position(Offset(firstSize.width, 0));
    return Size(
      width,
      max(firstSize.height, secondSize.height),
    );
  }
}