import 'package:flutter/material.dart';
/// create by 张风捷特烈 on 2020-04-19
/// contact me by email 1981462002@qq.com
/// 说明:

//    {
//      "widgetId": 75,
//      "name": 'Baseline基本使用',
//      "priority": 1,
//      "subtitle":
//          "【child】 : 孩子组件   【Widget】\n"
//          "【baseline】 : 基线位置   【double】\n"
//          "【baselineType】 : 基线类型   【TextBaseline】",
//    }
class CustomBaseline extends StatefulWidget {
  @override
  _CustomBaselineState createState() => _CustomBaselineState();
}

class _CustomBaselineState extends State<CustomBaseline> {
  double _baseline=20;

  @override
  Widget build(BuildContext context) {

    var childBox = Text(
      '你好,Flutter',
      style: TextStyle(fontSize: 20,fontFamily: "Menlo"),
    );


    var baseline = Baseline(
        child: childBox,
        baseline: _baseline,
        baselineType: TextBaseline.alphabetic
    );

    return Column(
      children: <Widget>[
        _buildSlider(),
        Container(
          width: 100/0.618,
          height: 100,
          color: Colors.grey.withAlpha(22),
          child: baseline,
        ),
      ],
    );
  }

  Widget _buildSlider() => Slider(
      divisions: 20,
      min: 0,
      max: 60,
      label: _baseline.toString(),
      value: _baseline,
      onChanged: (v) => setState(() => _baseline = v));
}