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single-screen-utils

v1.2.0

Published

single screen utils

Readme

single-screen-utils

NPM version NPM downloads

单屏页面布局常用工具方法

dynamicRem: 单屏页面时,既需要根据屏幕宽度也需要根据屏幕高度进行rem设置 (常规rem方案,仅使用屏幕宽度进行等比例划分)

forceLandscape: 强制元素横屏方案

forcePortrait: 强制元素竖屏方案

Install

npm install single-screen-utils

yarn add single-screen-utils

Quickstart

dynamicRem

普通方法

import { dynamicRem } from 'single-screen-utils';

// 返回一个销毁函数
const destroy = dynamicRem();

hooks方法

import { useDynamicRem } from 'single-screen-utils';

const App = () => {
  // 自动销毁
  useDynamicRem();

  return (
    <div id="app">App</div>
  )
};

forceLandscape

普通方法

import { forceLandscape } from 'single-screen-utils';

// 返回一个销毁函数
const destroy = forceLandscape();

hooks方法

import { useForceLandscape } from 'single-screen-utils';

const App = () => {
  // 自动销毁
  useForceLandscape();

  return (
    <div id="app">App</div>
  )
};

forcePortrait

普通方法

import { forcePortrait } from 'single-screen-utils';

// 返回一个销毁函数
const destroy = forcePortrait();

hooks方法

import { useForcePortrait } from 'single-screen-utils';

const App = () => {
  // 自动销毁
  useForcePortrait();

  return (
    <div id="app">App</div>
  )
};

API

dynamicRem: 根据页面宽高比动态设置html的rem大小

参数:

| 属性 | 说明 | 类型 | 默认值 | | :-------------- | ----------------------- | --------------------------------------- | ---------------------- | | pageWidth | 设计稿的宽度 (px) | number | 750 | | pageHeight | 设计稿的高度 (px) | number | 1334 | | pageFontSize | 页面html元素的字体 (px) | number | 100 | | pageAspectRatio | 页面宽高比 | number | pageWidth / pageHeight | | mode | 横屏模式/竖屏模式 | ModeType.portrait | ModeType.landscape | ModeType.portrait 竖屏 | | pauseOnInputFocus | 输入框聚焦时自动暂停(冻结字体),失焦后自动恢复。用于避免软键盘弹起改变视口高度导致字体跳动 | boolean | false |

返回值:

返回一个函数,调用此函数取消事件监听

| 类型 | 说明 | | -------- | ------------------------------- | | (resetFontSize?: string | number) => void | 取消rem动态设置,还原默认的字体 |

返回的函数上还挂载了两个方法:

| 方法 | 说明 | | -------- | ------------------------------- | | pause() | 暂停响应 resize,字体冻结在当前值 | | resume() | 恢复响应 resize,并立即重算一次 |

const handle = dynamicRem();

// 打开含输入框的弹窗前冻结,关闭后恢复 (也可直接用 pauseOnInputFocus 自动处理)
handle.pause();
handle.resume();

// 兼容原有用法:调用销毁并还原字体
handle('16px');

useDynamicRem 的返回值为 { pause, resume },语义与上述一致(组件卸载后调用为空操作)。

hooks 使用注意(对 useDynamicRem / useForceLandscape / useForcePortrait 均适用):

  • options 仅在首次渲染时生效,后续变化不会重新初始化;如需变更配置,请卸载后重新挂载组件。
  • dynamicRem 操作全局根字体(html 的 font-size),同一时刻页面内只应存在一个实例(hook 或普通方法皆计入),多实例同时运行会互相覆盖。
  • hooks 内部使用 useLayoutEffect(SSR 环境自动退回 useEffect),在浏览器绘制前完成字体设置,避免首帧闪跳。

静态常量:

dynamicRem.ModeType.portrait 竖屏模式 (0)

dynamicRem.ModeType.landscape 横屏模式 (1)


forceLandscape: 强制元素横屏

参数:

| 属性 | 说明 | 类型 | 默认值 | | ---------- | ------------------------------------------------------------ | ---------------------------------------------- | --------------- | | Id | 需要强制横屏的元素id | string | #app | | detectType | 判断是否横屏的依据 DetectType.size 宽度比高度大,认为是横屏 DetectType.orientation 设备方向是90或者-90,认为是横屏 | DetectType.size | DetectType.orientation | DetectType.size | | delay | 防抖时间(ms) | number | 800 | | angle | 旋转角度覆盖。不传则根据设备物理朝向(screen.orientation / window.orientation)自动选择正确的旋转方向,读取不到朝向时横屏默认 90、竖屏默认 -90 | 90 | -90 | 自动 | | onForceResize | 强制转换元素时的回调方法 | function | (isLandscape: boolean) => void |

返回值:

返回一个函数,调用此函数取消事件监听

| 类型 | 说明 | | -------- | ------------------------------- | | () => void | 取消事件监听,不再强制横屏 |

静态常量:

forceLandscape.DetectType.size 宽度比高度大,认为是横屏 (0)

forceLandscape.DetectType.orientation 设备方向是90或者-90,认为是横屏 (1)


forcePortrait: 强制元素竖屏。参数、返回值、静态常量与 forceLandscape 完全一致,仅旋转方向相反(设备处于横屏时旋转,处于竖屏时直接铺满)。

参数:

| 属性 | 说明 | 类型 | 默认值 | | ---------- | ------------------------------------------------------------ | ---------------------------------------------- | --------------- | | Id | 需要强制竖屏的元素id | string | #app | | detectType | 判断是否横屏的依据 DetectType.size 宽度比高度大,认为是横屏 DetectType.orientation 设备方向是90或者-90,认为是横屏 | DetectType.size | DetectType.orientation | DetectType.size | | delay | 防抖时间(ms) | number | 800 | | angle | 旋转角度覆盖。不传则根据设备物理朝向(screen.orientation / window.orientation)自动选择正确的旋转方向,读取不到朝向时横屏默认 90、竖屏默认 -90 | 90 | -90 | 自动 | | onForceResize | 强制转换元素时的回调方法,参数为设备是否已处于目标(竖屏)朝向 | function | (isPortrait: boolean) => void |

返回值:

返回一个函数,调用此函数取消事件监听

| 类型 | 说明 | | -------- | ------------------------------- | | () => void | 取消事件监听,不再强制竖屏 |

静态常量:

forcePortrait.DetectType.size 宽度比高度大,认为是横屏 (0)

forcePortrait.DetectType.orientation 设备方向是90或者-90,认为是横屏 (1)

Develop

yarn install

npm run dev

npm run build

npm run test