大前端代码重构之事件拦截iOS Flutter Vue示例分析

import UIKit
import SnapKit
import SwiftExpand
/**
 通过递归遍历将所有子视图设置 isUserInteractionEnabled = false,则该视图可以响应事件;
 */
class NNAbsorbPointerViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        edgesForExtendedLayout = []
        view.backgroundColor = .white
        title = "NNAbsorbPointerView"
        absorbPointerView.addSubview(button)
        view.addSubview(absorbPointerView)
//        view.recursion{ e in
//            e.isUserInteractionEnabled = false;
//        }
        view.addGestureTap { reco in
            debugPrint("\(Date()):reco.view")
        }
    }
    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        let edge = UIEdgeInsets(all: 50)
        button.snp.makeConstraints { make in
            make.edges.equalToSuperview().inset(edge)
        }
        absorbPointerView.snp.makeConstraints { make in
            make.edges.equalToSuperview().inset(edge)
        }
    }
    lazy var absorbPointerView: NNAbsorbPointerView = {
        let view = NNAbsorbPointerView(frame: .zero);
        view.absorbing = true;
        view.backgroundColor = .green;
        view.addGestureTap { reco in
            debugPrint("\(Date()):NNAbsorbPointerView")
        }
        return view
    }()
    lazy var button: UIButton = {
        let view = UIButton(type: .custom);
        view.setTitle("UIButton", for: .normal)
        view.setTitleColor(.white, for: .normal)
        view.backgroundColor = .blue;
        view.addGestureTap { reco in
            debugPrint("\(Date()):button")
        }
        return view
    }()
}

import UIKit
class NNAbsorbPointerView: UIView {
    /// 是否拦截响应
    var absorbing = false;
    // **MARK: - 重写加载方法**
    override init(frame: CGRect) {
        super.init(frame: frame);
    }
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    override func layoutSubviews() {
        super.layoutSubviews()
    }
    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        if absorbing {
            return self
        }
        // 1.判断能不能处理事件
        if isUserInteractionEnabled == false, isHidden, alpha <= 0.01 {
            return nil
        }
        // 2.判断点在不在当前控件上
        if self.point(inside: point, with: event) == false {
            return nil;
        }
        for subView in subviews.reversed() {
            let subPoint = self.convert(point, to: subView);
            if let targetView = subView.hitTest(subPoint, with: event) {
                return targetView;
            }
        }
        return self
    }
    // **MARK: - 私有方法**
}

//
//  AbsorbPointerDemo.dart
//  flutter_templet_project
//
//  Created by shang on 10/25/21 11:05 AM.
//  Copyright © 10/25/21 shang. All rights reserved.
//
// AbsorbPointer本身可以接收点击事件，消耗掉事件，而IgnorePointer无法接收点击事件，其下的控件可以接收到点击事件（不是子控件）。
import "package:flutter/material.dart";
import 'package:flutter_templet_project/extension/ddlog.dart';
class AbsorbPointerDemo extends StatefulWidget {
  const AbsorbPointerDemo({Key? key}) : super(key: key);
  @override
  _AbsorbPointerDemoState createState() => _AbsorbPointerDemoState();
}
class _AbsorbPointerDemoState extends State<AbsorbPointerDemo> {
  bool _disable = false;
  bool _switchValue = false;
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Absorbpointer'),
        centerTitle: true,
        elevation: 0,
      ),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.start,
        children: <Widget>[
          Row(
            children: <Widget>[
              Text('不可点击：absorbing: ${_disable}'),
              Switch(
                value: _disable,
                onChanged: (bool val) {
                  _disable = val;
                  setState(() {});
                },
              )
            ],
          ),
          Divider(),
          _buildAbsorbPointerNew(absorbing: _disable),
          MaterialButton(
            color: Colors.lightBlue,
            onPressed: () => onClick('我是外面的按钮，不受影响'),
            child: Text('我是外面的按钮，不受影响'),
          ),
        ],
      ),
    );
  }
  /// 默认吸收事件，拦截事件
  _buildAbsorbPointerNew({bool absorbing = true}) {
    return InkWell(
      onTap: () => onClick("outside"),
      child: Container(
        color: Colors.green,
        padding: EdgeInsets.all(20),
        child: AbsorbPointer(
          absorbing: absorbing,
          child: InkWell(
            onTap: () => onClick("inside"),
            child: Container(
              color: Colors.blue,
              width: 200.0,
              height: 100.0,
              alignment: Alignment.center,
              child: Text("Container"),
            ),
          ),
        ),
      ),
    );
  }
  onClick(String msg) {
    debugPrint(msg);
  }
}

<template>
  <h2>{{ $route.meta.title }}</h2>
  <!-- <h2>{{ JSON.stringify(route) }}</h2> -->
  <div class="page" @click.capture.stop="doThis">
    <button @click="onClick">button</button>
  </div>
</template>
<script setup>
import { getCurrentInstance, ref, reactive, watch, onMounted, } from 'vue';
import { useRouter, useRoute } from 'vue-router';
const router = useRouter();
const route = useRoute();
const doThis = () => {
  console.log(`${new Date()}: doThis`);
};
const onClick = () => {
  console.log(`${new Date()}: onClick`);
};
</script>
<style scoped lang='scss'>
.page{
  background-color: green; 
}
</style>