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

/*
 * Author: xiaojia.dxj
 * Date: 2018/11/22
 * Email: xiaojia.dxj@alibaba-inc.com
 * LastUpdateTime: 2018/11/22
 * LastUpdateBy: xj.deng
 *
 * Describle:Align描述
 */
class ConstracubedBox extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    
    return Column(
      children: <Widget>[
        ConstrainedBox(
          //制定一个指定大小的盒子，限定最大最小宽高
          constraints: const BoxConstraints(
            minWidth: 100.0,
            minHeight: 20.0,
            maxWidth: 500.0,
            maxHeight: 50.0,
          ),
          child: new Container(
            margin: const EdgeInsets.only(left: 20.0, right: 20.0),
            //child 宽高超过制定限制范围失效，效果宽/高=100/20区域
            width: 600.0,
            height: 250.0,
            child: new Text('ConstrainedBox',style: TextStyle(color: Colors.white),),
            color: Colors.red,
          ),
        ),
       
      ],
    );
  }
}