gistfile1.dart

import 'package:flutter/material.dart';

class DynamicTextView extends StatelessWidget {
  final String nickname;
  final String postfix;

  const DynamicTextView({
    Key? key,
    required this.nickname,
    required this.postfix,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return LayoutBuilder(
      builder: (BuildContext context, BoxConstraints constraints) {
        final maxWidth = constraints.maxWidth * 2 - 20;
        
       
        final testPaint = TextPainter(
          textDirection: TextDirection.ltr,
          text: TextSpan(text: nickname + postfix),
        )..layout();

        String displayText = "";
        if (testPaint.size.width > maxWidth) {
          // 여기서 닉네임을 줄임 처리해야 함
          int nicknameLength = nickname.length;
          while (nicknameLength > 0) {
            final ellipsisText = TextPainter(
              textDirection: TextDirection.ltr,
              text: TextSpan(text: nickname.substring(0, nicknameLength) + '...' + postfix),
            )..layout();

            if (ellipsisText.size.width <= maxWidth) {
              displayText = nickname.substring(0, nicknameLength) + '...' + postfix;
              break;
            }

            nicknameLength--;
          }
        } else {
          displayText = nickname + postfix;
        }

        return Text(
         displayText,
          maxLines : 2
        );
      },
    );
  }
}

void main() {
  runApp(
    MaterialApp(
      home: Scaffold(
        body: Center(
          child: Container(
            width : 100,
            color : Colors.amber,
            child: DynamicTextView(
              nickname: 'abcdeabcdeabcdeabcdeabcdeabcde',
              postfix: ' like you!',
            ),
          ),
        ),
      ),
    ),
  );
}