p7

import 'package:d_chart/d_chart.dart';
import 'package:flutter/material.dart';

List<OrdinalData> ordinalDataList = [
  OrdinalData(
    domain: 'A',
    measure: 60,
    color: Colors.blue,
  ),
  OrdinalData(
    domain: 'B',
    measure: 25,
    color: Colors.cyan,
  ),
  OrdinalData(
    domain: 'C',
    measure: 15,
    color: Colors.deepPurple,
  ),
  OrdinalData(
    domain: 'D',
    measure: 40,
    color: Colors.amber,
  ),
];

AspectRatio(
  aspectRatio: 16 / 9,
  child: DChartPieO(
    data: ordinalDataList,
    customLabel: (ordinalData, index) {
      return '${ordinalData.measure}%';
    },
    configRenderPie: ConfigRenderPie(
      strokeWidthPx: 0,
      arcWidth: 36,
      arcLabelDecorator: ArcLabelDecorator(
        labelPosition: ArcLabelPosition.outside,
        leaderLineStyle: const ArcLabelLeaderLineStyle(
          color: Colors.black87,
          length: 16,
          thickness: 1,
        ),
      ),
    ),
  ),
),