H5_Flutter/lib/view/component/button.dart

import 'package:flutter/material.dart';
import 'package:link/utils/global.dart';

import '../../utils/size_fit.dart';

class Button extends StatefulWidget {
  Widget child;
  var callback;
  Button({Key? key, required this.child, required this.callback})
      : super(key: key);

  @override
  State<Button> createState() => _ButtonState();
}

class _ButtonState extends State<Button> {
  double scale = 1.0;
  double alpha = 1.0;

  bool isTrue = false;

  @override
  void initState() {
    if (Global().eventBus != null) {
      Global().eventBus!.on().listen((event) {
        if (scale != 1.0) {
          setState(() {
            scale = 1.0;
            alpha = 1.0;
          });
        }
      });
    }

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    SizeFit.initialize(context);

    return GestureDetector(
        onTap: () {
          widget.callback();
        },
        onTapDown: (TapDownDetails details) {
          setState(() {
            scale = 0.95;
            alpha = 0.8;
          });
        },
        onTapUp: (TapUpDetails details) {
          setState(() {
            scale = 1.0;
            alpha = 1.0;
          });
        },

        // onVerticalDragEnd: (details){
        //   setState(() {
        //       scale = 1.0;
        //       alpha = 1.0;
        //     });
        // },

        // onLongPressUp: () {
        //   setState(() {
        //     scale = 1.0;
        //     alpha = 1.0;
        //   });
        // },
        // onLongPressCancel: (() {
        //   setState(() {
        //     scale = 1.0;
        //     alpha = 1.0;
        //   });
        // }),

        // onLongPressMoveUpdate: (details){

        // },

        onTapCancel: () {
          setState(() {
            scale = 1.0;
            alpha = 1.0;
          });
        },
        child: Transform.scale(
            scale: scale, child: Opacity(opacity: alpha, child: widget.child)));
  }
}