liangchengyou / wow_english

  import 'dart:async';
  import 'package:flutter/material.dart';
  
  ///带节流功能的GestureDetector
  class ThrottledGestureDetector extends StatefulWidget {
    final Widget child;

    final VoidCallback? onTap;

    final int throttleTime;
  
    const ThrottledGestureDetector({
      super.key,
      required this.child,
      required this.onTap,
      this.throttleTime = 500, // 默认节流时间为500毫秒
    });
  
    @override
    _ThrottledGestureDetectorState createState() =>
        _ThrottledGestureDetectorState();
  }
  
  class _ThrottledGestureDetectorState extends State<ThrottledGestureDetector> {
    bool _isThrottled = false;
  
    void _handleTap() {
      if (!_isThrottled) {

        if (widget.onTap != null) {
          widget.onTap!();
        }

        _isThrottled = true;
        Timer(Duration(milliseconds: widget.throttleTime), () {
          _isThrottled = false;
        });
      }
    }
  
    @override
    Widget build(BuildContext context) {
      return GestureDetector(
        onTap: _handleTap,
        child: widget.child,
      );
    }
  }