flutter-todos/lib/widgets/task_info_widget.dart

import 'package:flutter/material.dart';
import 'package:todo_list/i10n/localization_intl.dart';
import 'package:todo_list/json/task_bean.dart';
import 'package:todo_list/json/task_icon_bean.dart';
import 'package:todo_list/widgets/popmenu_botton.dart';

class TaskInfoWidget extends StatelessWidget {
  final int index;
  final double space;
  final TaskBean taskBean;
  final VoidCallback onDelete;
  final VoidCallback onEdit;
  final bool isCardChangeWithBg;
  final bool isExisting;

  TaskInfoWidget(
    this.index, {
    this.space = 20,
    this.taskBean,
    this.onDelete,
    this.onEdit,
    this.isCardChangeWithBg = false,
    this.isExisting = false,
  });

  @override
  Widget build(BuildContext context) {
    final iconColor = isCardChangeWithBg
        ? Theme.of(context).primaryColor
        : ColorBean.fromBean(taskBean.taskIconBean.colorBean);
    final textColor = getTextColor(context);
    final taskIconData = IconBean.fromBean(taskBean.taskIconBean.iconBean);

    return Column(
      mainAxisAlignment: MainAxisAlignment.spaceAround,
      children: <Widget>[
        Row(
          children: <Widget>[
            Expanded(
              child: Container(
                alignment: Alignment.centerLeft,
                margin: EdgeInsets.only(top: 16),
                child: Hero(
                  tag: "task_icon$index",
                  child: Container(
                      width: 42,
                      height: 42,
                      decoration: BoxDecoration(
                          border: Border.all(
                            color: iconColor,
                          ),
                          shape: BoxShape.circle),
                      child: Icon(
                        taskIconData,
                        color: iconColor,
                      )),
                ),
              ),
            ),
            Expanded(
              child: Container(
                alignment: Alignment.centerRight,
                child: Container(
                    width: 42,
                    height: 42,
                    margin: EdgeInsets.only(top: 16),
                    child: space == 20
                        ? SizedBox()
                        : Hero(
                            tag: "task_more$index",
                            child: Material(
                                color: Colors.transparent,
                                child: PopMenuBt(
                                  iconColor: iconColor,
                                  onDelete: onDelete,
                                  onEdit: onEdit,
                                  taskBean: taskBean,
                                )))),
              ),
            )
          ],
        ),
        SizedBox(
          height: space,
        ),
        Column(
          mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            taskBean.getNeedUpdateToCloud(taskBean) ? Hero(
              tag: "task_syn$index",
              child: Material(
                color: Colors.transparent,
                child: Text(
                  "(${DemoLocalizations.of(context).notSynced})",
                  style: TextStyle(
                    color: textColor,
                      fontSize: 12,),
                ),
              ),
            ) : Container(),
            Container(
              child: Row(
                children: <Widget>[
                  Expanded(
                    flex: 8,
                    child: Container(
                      alignment: Alignment.bottomLeft,
                      child: Hero(
                        tag: "task_title$index",
                        child: Material(
                          color: Colors.transparent,
                          child: Text(
                            "${taskBean.taskName} ",
                            style: TextStyle(
                              color: textColor,
                                fontSize: 20, fontWeight: FontWeight.bold),
                          ),
                        ),
                      ),
                    ),
                  ),
                  Expanded(
                    flex: 4,
                    child: Container(
                      alignment: Alignment.bottomRight,
                      child: taskBean.overallProgress >= 1.0 && !isExisting
                          ? Hero(
                              tag: "task_complete$index",
                              child: Icon(
                                Icons.check_circle,
                                size: 24,
                                color: Colors.greenAccent,
                              ),
                            )
                          : getStatusWidget(context, iconColor),
                    ),
                  )
                ],
              ),
            ),
            Container(
              margin: EdgeInsets.only(top: 5),
              alignment: Alignment.bottomLeft,
              child: Hero(
                tag: "task_items$index",
                child: Material(
                  color: Colors.transparent,
                  child: Text(
                    "${DemoLocalizations.of(context).itemNumber(taskBean.taskDetailNum)}",
                    style: TextStyle(fontSize: 10,color: textColor),
                  ),
                ),
              ),
            ),
            Container(
              alignment: Alignment.centerRight,
              child: Hero(
                tag: "task_progress$index",
                child: Material(
                    color: Colors.transparent,
                    child: Text(
                      "${(taskBean.overallProgress * 100).toInt()}%",
                      style:
                          TextStyle(fontSize: 10, fontWeight: FontWeight.bold,color: textColor),
                    )),
              ),
            ),
            Hero(
              tag: "task_progressbar$index",
              child: Container(
                height: 10,
                margin: EdgeInsets.only(top: 12, bottom: 10),
                child: ClipRRect(
                  borderRadius: BorderRadius.all(Radius.circular(10)),
                  child: LinearProgressIndicator(
                    valueColor: AlwaysStoppedAnimation(iconColor),
                    value: taskBean.overallProgress,
                    backgroundColor: Color.fromRGBO(224, 224, 224, 1),
                  ),
                ),
              ),
            ),
          ],
        )
      ],
    );
  }

  Widget getStatusWidget(BuildContext context, Color taskColor) {
    final startDate = taskBean.startDate ?? "";
    final deadLine = taskBean.deadLine ?? "";
    final now = DateTime.now();
    if (startDate.isNotEmpty && deadLine.isNotEmpty) {
      final begin = DateTime.parse(startDate);
      final end = DateTime.parse(deadLine);

      ///如果当前时间小于设置的开始时间
      if (now.isBefore(begin)) {
        return getBeginIcon(begin, now, context, taskColor);
      }

      ///如果当前时间在设置的起止时间内
      if (now.isAfter(begin) && now.isBefore(end)) {
        return getEndIcon(end, now, context, taskColor);
      }
    } else if (startDate.isNotEmpty) {
      final begin = DateTime.parse(startDate);
      if (now.isBefore(begin)) {
        return getBeginIcon(begin, now, context, taskColor);
      }
    } else if (deadLine.isNotEmpty) {
      final end = DateTime.parse(deadLine);
      if (now.isBefore(end)) {
        return getEndIcon(end, now, context, taskColor);
      }
    }
    return SizedBox();
  }

  Widget getEndIcon(
      DateTime end, DateTime now, BuildContext context, Color taskColor) {
    int days = end.difference(now).inDays;
    int hours = end.difference(now).inHours;
    bool showHour = days == 0;
    return Row(
      children: <Widget>[
        Hero(
            tag: "time_icon$index",
            child: Icon(
              Icons.timelapse,
              color: taskColor,
            )),
        Expanded(
          child: Hero(
              tag: "time_text$index",
              child: Material(
                color: Colors.transparent,
                child: Text(
                  showHour
                      ? DemoLocalizations.of(context).hours(hours)
                      : DemoLocalizations.of(context).days(days),
                  style: TextStyle(color: taskColor,),
                ),
              )),
        ),
      ],
    );
  }

  Color getTextColor(BuildContext context){
    final textColor = taskBean.textColor;
    if(textColor != null) return ColorBean.fromBean(textColor);
    return DefaultTextStyle.of(context).style.color;
  }

  Widget getBeginIcon(
      DateTime begin, DateTime now, BuildContext context, Color taskColor) {
    int days = begin.difference(now).inDays;
    int hours = begin.difference(now).inHours;
    bool showHour = days == 0;
    return Row(
      children: <Widget>[
        Hero(
            tag: "time_icon$index",
            child: Icon(
              Icons.timer,
              color: taskColor,
            )),
        Expanded(
          child: Hero(
              tag: "time_text$index",
              child: Material(
                  color: Colors.transparent,
                  child: Text(
                    showHour
                        ? DemoLocalizations.of(context).hours(hours)
                        : DemoLocalizations.of(context).days(days),
                    style: TextStyle(
                      color: taskColor,
                    ),
                  ))),
        ),
      ],
    );
  }
}