main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: MyWidget(),
        ),
      ),
    );
  }
}

class MyWidget extends StatelessWidget {
  final lorem =
      'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam euismod quam ut orci semper, quis convallis libero venenatis. Aliquam erat volutpat. Curabitur imperdiet tellus velit, ac tincidunt urna pellentesque ut.';

  @override
  Widget build(BuildContext context) {
    return Container(
      width: 200,
      height: 100,
      color: Colors.green,
      child: Text(
        lorem,
        overflow: TextOverflow.ellipsis,
        /*
          * Thats the place where the problem is, Ellipsis forces to use one line
          * while having more space there to display. I'd love to get the 3/4 lines
          * of text and at the end of the last possible line '...'
          */
      ),
    );
  }
}