fluttertable_calendar日历的使用

table_calendar 一个比较好的日历框架，目前升级后已经支持null safety了

关于使用可以直接参考https://pub.dev/packages/table_calendar，这里主要介绍一些配置项
1.国际化locale属性

locale: 'zh_CN',

2.设置日历最大开始日期，最小开始日期

firstDay: DateTime.utc(2020, 1, 1),
lastDay: DateTime.utc(2030, 1, 1),

3.设日历头部显示和隐藏

headerVisible:true

4.设置日历头部星期描述行显示和隐藏

daysOfWeekVisible: true,

5.设置是否支持上下左右滚动

enum AvailableGestures { none, verticalSwipe, horizontalSwipe, all }
availableGestures: AvailableGestures.all,//默认上下左右均可滚动

6.设置日历周开始时间 这里设置为周一为每周的开始时间

startingDayOfWeek: StartingDayOfWeek.monday 

7.设置头部属性显示和隐藏

headerStyle: HeaderStyle(
      titleCentered: true,
      leftChevronVisible: false,
      rightChevronVisible: false,
      formatButtonVisible: false,
    ),

8.设置选中状态和非选中状态颜色等参数

calendarStyle: CalendarStyle(
    holidayTextStyle: TextStyle(color: Colors.red),
    holidayDecoration: BoxDecoration(
        color: Colors.transparent, shape: BoxShape.circle),
    // Use `CalendarStyle` to customize the UI
    outsideDaysVisible: true,
    // outsideDecoration: BoxDecoration(
    //   color: Colors.cyan,
    // ),
    markersMaxCount: 1,
    // outsideDecoration: ,
    // markerSize: 10,
    // markersAlignment: Alignment.bottomCenter,
    // markerMargin: EdgeInsets.only(top: 8),
    // cellMargin: EdgeInsets.symmetric(horizontal: 10, vertical: 10),
    todayDecoration: BoxDecoration(
      color: Colors.blue,
      shape: BoxShape.circle,
    ),

    // markerSizeScale: 5,
    markerDecoration:
        BoxDecoration(color: Colors.cyan, shape: BoxShape.circle),
    canMarkersOverflow: true)

9.非当月日期是否需要显示出来

outsideDaysVisible: true