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@any-touch/doubletap
Advanced tools
双击识别器. 基于@any-touch/tap实现, 是tap的一个特例.
npm i -S @any-touch/doubletap
// 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
});
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".
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
any-touch的识别器, 用来识别双击手势, 是Tap识别器的一个特例
The npm package @any-touch/doubletap receives a total of 113 weekly downloads. As such, @any-touch/doubletap popularity was classified as not popular.
We found that @any-touch/doubletap demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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