Socket
Socket
Sign inDemoInstall

@any-touch/doubletap

Package Overview
Dependencies
3
Maintainers
1
Versions
11
Alerts
File Explorer

Advanced tools

Install Socket

Detect and block malicious and high-risk dependencies

Install

@any-touch/doubletap


Version published
Maintainers
1
Created

Readme

Source

@any-touch/doubletap

双击识别器. 基于@any-touch/tap实现, 是tap的一个特例.

快速开始

// 只加载tap识别器(拖拽)
import Core from '@any-touch/core';
import doubletap from '@any-touch/doubletap';
const at = new Core(el);
at.use(doubletap)

// 双击
at.on('doubletap', (event) => {
    console.log(event) // 包含点击位置信息
});

⚠️注意: 使用doubletap后, tap每次触发会延迟300ms, 以便区分是2次tap还是doubletap.

源码解析

因为是基于@any-touch/tap实现的, 所以代码不多, 只是使用beforeEach拦截器.

export default function (at: Core) {
    at.use(tap, { name: 'doubletap', tapTimes: 2 });
    const doubleTapContext = at.get('doubletap')
    let timeID: number;
    at.beforeEach((type, next) => {
        if ('tap' === type) {
            clearTimeout(timeID);
            timeID = setTimeout(() => {
                if ([STATE.POSSIBLE, STATE.FAILED].includes(doubleTapContext.state)) {
                    next();
                }
            }, 300);
        } else {
            next();
        }
    });
    return doubleTapContext;
}

这里只需要多理解一个概念就是STATE(识别器的状态).

名称解释
POSSIBLE待识别
RECOGNIZED已识别
FAILED识别失败

识别流程如下, 每次点击屏幕, STATE是"POSSIBLE状态, 识别成功后状态变成"RECOGNIZED", 识别失败变成"FAILED".

特别解释下"FAILED"的发生情况,用doubletap识别器举例, 当2次点击间隔时间过长, doubletap的状态就会变成"FAILED", 当第三次点击的时候状态又变回"POSSIBLE".

完整源码

N击

如果看懂了双击的逻辑, 那么稍作修改就可以实现"3击".

export default function (at: Core) {
    // ⭐只有这一行的tapTimes改成了3
    at.use(tap, { name: 'doubletap', tapTimes: 3 });

    // 未改动
    const doubleTapContext = at.get('doubletap')
    let timeID: number;
    at.beforeEach((type, next) => {
        if ('tap' === type) {
            clearTimeout(timeID);
            timeID = setTimeout(() => {
                if ([STATE.POSSIBLE, STATE.FAILED].includes(doubleTapContext.state)) {
                    next();
                }
            }, 300);
        } else {
            next();
        }
    });
    return doubleTapContext;
}

FAQs

Last updated on 06 Jan 2022

Did you know?

Socket

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap

Packages

Stay in touch

Get open source security insights delivered straight into your inbox.


  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc