Teso_Mobile/lib/Pages/PageWidgets/DesireComeTrue/DesiredItem.dart

import 'package:teso/Classes/API%20Clasess/Desire.dart';
import 'package:flutter/material.dart';
import 'package:jiffy/jiffy.dart';
import 'package:shared_preferences/shared_preferences.dart';

class DesiredItem extends StatefulWidget {
  final Desire? item;
  final int? number;
  final List<Desire?>? selected;
  const DesiredItem({Key? key, this.item, this.number, this.selected})
      : super(key: key);
  @override
  _DesiredItemState createState() => _DesiredItemState();
}

class _DesiredItemState extends State<DesiredItem>
    with TickerProviderStateMixin {
  late Animation<double> _spaceWidth;
  late AnimationController _controller;
  late AnimationController _strikeController;
  late Animation<double> _strikePercent;

  bool cancelled = false;

  @override
  void initState() {
    super.initState();
    _controller = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 150),
    );

    _strikeController = AnimationController(
        vsync: this, duration: const Duration(milliseconds: 300));

    _spaceWidth = Tween<double>(begin: 8, end: 12)
        .animate(CurvedAnimation(parent: _controller, curve: Curves.easeOut));

    _strikePercent = Tween<double>(begin: 0, end: 1).animate(
        CurvedAnimation(parent: _strikeController, curve: Curves.easeOut));

    _spaceWidth.addListener(() {
      setState(() {});
    });

    _strikePercent.addListener(() {
      setState(() {});
    });
  }

  cancel() {
    setState(() {
      cancelled = !cancelled;
    });
    if (cancelled) {
      _playAnimation(true);
    } else {
      _playAnimation(false);
    }
  }

  Future<void> _playAnimation(bool strikeIn) async {
    try {
      if (strikeIn) {
        _strikeController.forward().orCancel;
      } else {
        _strikeController.reverse().orCancel;
      }

      await _controller.forward().orCancel;
      await _controller.reverse().orCancel;
    } on TickerCanceled {
      // the animation got canceled, probably because we were disposed
    }
  }

  removeElement(item) {
    cancel();
    if (cancelled) {
      widget.selected!.remove(item);
      SharedPreferences.getInstance().then((value) {
        var jiffy = Jiffy()..add(months: 1);
        value.setString(
            "desire" + jiffy.format("MMMM, yyyy"), widget.selected.toString());
      });
    } else {
      widget.selected!.insert(widget.number! - 1, item);
      SharedPreferences.getInstance().then((value) {
        var jiffy = Jiffy()..add(months: 1);
        value.setString(
            "desire" + jiffy.format("MMMM, yyyy"), widget.selected.toString());
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.fromLTRB(0, 0, 0, 0),
      child: IntrinsicHeight(
        child: Stack(
          children: [
            Row(
              children: <Widget>[
                SizedBox(
                  width: 40,
                  child: Center(
                    child: Text(widget.number.toString() + ")",
                        style: _getValidateStyle(true)),
                  ),
                ),
                Container(
                  width: 1,
                  decoration: BoxDecoration(color: Colors.red),
                ),
                SizedBox(
                  width: _spaceWidth.value,
                ),
                Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: CustomPaint(
                    foregroundPainter:
                        StrikeThroughPainter(_strikePercent.value),
                    child: Text(
                        widget.item!.productName!.length > 20
                            ? widget.item!.productName!.substring(0, 16) +
                                "......"
                            : widget.item!.productName!,
                        style: _getValidateStyle(true)),
                  ),
                ),
                SizedBox(
                  width: 16,
                ),
              ],
            ),
            Align(
              alignment: Alignment.centerRight,
              child: InkWell(
                onTap: () => removeElement(widget.item),
                child: Container(
                    margin: EdgeInsets.only(
                      right: 10,
                    ),
                    width: 22.5,
                    decoration: BoxDecoration(
                      shape: BoxShape.circle,
                      color: cancelled == false ? Colors.red : Colors.green,
                    ),
                    child: Center(
                      child: Text(
                        cancelled == false ? "-" : "+",
                        style: TextStyle(fontSize: 25, color: Colors.white),
                      ),
                    )),
              ),
            )
          ],
        ),
      ),
    );
  }

  TextStyle _getValidateStyle(bool validation) {
    return TextStyle(
        fontWeight: FontWeight.bold,
        color: (validation) ? Colors.black54 : Colors.black87,
        fontSize: 18,
        fontFamily: 'WickedGrit',
        decoration: null);
  }
}

class StrikeThroughPainter extends CustomPainter {
  StrikeThroughPainter(this.percent);

  double percent;

  @override
  void paint(Canvas canvas, Size size) {
    canvas.drawRect(
        Rect.fromLTWH(0, (size.height / 2) - 2, size.width * percent, 4),
        Paint()..color = Colors.redAccent);
  }

  @override
  bool shouldRepaint(CustomPainter oldDelegate) {
    return false;
  }
}