flutter_custom_calendar/lib/widget/calendar_view.dart

import 'package:flutter/material.dart';
import 'package:flutter_custom_calendar/constants/constants.dart';
import 'package:flutter_custom_calendar/controller.dart';
import 'package:flutter_custom_calendar/model/date_model.dart';
import 'package:flutter_custom_calendar/widget/month_view_pager.dart';
import 'package:flutter_custom_calendar/widget/week_view_pager.dart';

/**
 * 暂时默认是周一开始的
 */
class CalendarViewWidget extends StatefulWidget {
  //整体的背景设置
  BoxDecoration boxDecoration;

  //控制器
  CalendarController calendarController;

  CalendarViewWidget({@required this.calendarController, this.boxDecoration});

  @override
  _CalendarViewWidgetState createState() => _CalendarViewWidgetState();
}

class _CalendarViewWidgetState extends State<CalendarViewWidget>
    with SingleTickerProviderStateMixin {
  double itemHeight;
  double totalHeight;

  bool expand = true;

  AnimationController _animationController;

  @override
  void initState() {
    _animationController =
        AnimationController(duration: Duration(milliseconds: 200), vsync: this);

    widget.calendarController.expandChanged.addListener(() {
      print("_CalendarViewWidgetState:$expand");
      setState(() {
        expand = !expand;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    //暂时先这样写死,提前计算布局的高度,不然会出现问题:a horizontal viewport was given an unlimited amount of I/flutter ( 6759): vertical space in which to expand.
    itemHeight = MediaQuery.of(context).size.width / 7;
    totalHeight = itemHeight * 6 + 10 * (6 - 1);
    return Container(
      //外部可以自定义背景设置
      decoration: widget.boxDecoration,
      child: new Column(
        children: <Widget>[
          /**
           * 利用const，避免每次setState都会刷新到这顶部的view
           */
          widget.calendarController.weekBarItemWidgetBuilder(),
          AnimatedContainer(
            duration: Duration(milliseconds: 500),
            height: expand ? totalHeight : itemHeight,
            child: expand
                ? Container(
                    height: totalHeight,
                    child: MonthViewPager(
                      selectMode: widget.calendarController.selectMode,
                      monthChange: (int year, int month) {
                        widget.calendarController.monthChange(year, month);
                      },
                      calendarSelect: (dateModel) {
                        widget.calendarController.selectDateModel = dateModel;
                        widget.calendarController.calendarSelect(dateModel);
                      },
                      monthList: widget.calendarController.monthList,
                      pageController: widget.calendarController.pageController,
                      selectedDateList:
                          widget.calendarController.selectedDateList,
                      selectDateModel:
                          widget.calendarController.selectDateModel,
                      dayWidgetBuilder:
                          widget.calendarController.dayWidgetBuilder,
                      minSelectDate: DateModel()
                        ..year = widget.calendarController.minSelectYear
                        ..month = widget.calendarController.minSelectMonth
                        ..day = widget.calendarController.minSelectDay,
                      maxSelectDate: DateModel()
                        ..year = widget.calendarController.maxSelectYear
                        ..month = widget.calendarController.maxSelectMonth
                        ..day = widget.calendarController.maxSelectDay,
                      maxMultiSelectCount:
                          widget.calendarController.maxMultiSelectCount,
                      multiSelectOutOfRange:
                          widget.calendarController.multiSelectOutOfRange,
                      multiSelectOutOfSize:
                          widget.calendarController.multiSelectOutOfSize,
                      extraDataMap: widget.calendarController.extraDataMap,
                    ),
                  )
                : Container(
                    height: itemHeight,
                    child: WeekViewPager(
                      selectMode: widget.calendarController.selectMode,
                      monthChange: (int year, int month) {
                        widget.calendarController.monthChange(year, month);
                      },
                      calendarSelect: (dateModel) {
                        widget.calendarController.selectDateModel = dateModel;
                        widget.calendarController.calendarSelect(dateModel);
                      },
                      weekList: widget.calendarController.weekList,
                      pageController: widget.calendarController.pageController,
                      selectedDateList:
                          widget.calendarController.selectedDateList,
                      selectDateModel:
                          widget.calendarController.selectDateModel,
                      dayWidgetBuilder:
                          widget.calendarController.dayWidgetBuilder,
                      minSelectDate: DateModel()
                        ..year = widget.calendarController.minSelectYear
                        ..month = widget.calendarController.minSelectMonth
                        ..day = widget.calendarController.minSelectDay,
                      maxSelectDate: DateModel()
                        ..year = widget.calendarController.maxSelectYear
                        ..month = widget.calendarController.maxSelectMonth
                        ..day = widget.calendarController.maxSelectDay,
                      maxMultiSelectCount:
                          widget.calendarController.maxMultiSelectCount,
                      multiSelectOutOfRange:
                          widget.calendarController.multiSelectOutOfRange,
                      multiSelectOutOfSize:
                          widget.calendarController.multiSelectOutOfSize,
                      extraDataMap: widget.calendarController.extraDataMap,
                    ),
                  ),
          ),
        ],
      ),
    );
  }
}