import 'package:flutter/material.dart';

class DotNumber extends StatelessWidget {
  final double number;
  final Color color;
  final int dotLength;
  final double size;
  final String prefix;
  final double correct;

  const DotNumber(
    this.number, {
    this.dotLength = 4, // 小数点后面的位数
    this.color = const Color.fromRGBO(255, 255, 255, .7), // 文本颜色
    this.size = 32.0, // 字符尺寸
    this.prefix = '', // 前缀字符
    this.correct = 0, // 小数点底部边距修正
    Key? key,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Row(
      crossAxisAlignment: CrossAxisAlignment.end,
      children: [
        Text(
          prefix + number.truncate().toString(),
          style: TextStyle(
            color: color,
            fontSize: size,
          ),
        ),
        Padding(
          padding: EdgeInsets.only(
            bottom: correct > 0 ? correct : (size / 10),
          ),
          child: Text(
            (number % 1).toStringAsFixed(dotLength).substring(1),
            style: TextStyle(
              color: color.withAlpha(0xB3),
              fontSize: size * 0.618,
            ),
          ),
        ),
      ],
    );
  }
}