goview_vue/src/utils/utils.ts

import { h } from 'vue'
import { NIcon } from 'naive-ui'
import screenfull from 'screenfull'
import throttle from 'lodash/throttle'
import Image_404 from '../assets/images/exception/image-404.png'
import html2canvas from 'html2canvas'
import { downloadByA } from './file'

/**
 * * 判断是否是开发环境
 * @return { Boolean }
 */
export const isDev = () => {
  return import.meta.env.DEV
}

/**
 * * 生成一个不重复的ID
 * @param { Number } randomLength
 */
export const getUUID = (randomLength = 10) => {
  return Number(
    Math.random().toString().substr(2, randomLength) + Date.now()
  ).toString(36)
}

/**
 * * render 图标
 *  @param icon 图标
 *  @param set 设置项
 */
export const renderIcon = (icon: any, set = {}) => {
  return () => h(NIcon, set, { default: () => h(icon) })
}
/**
 * * render 语言
 *  @param lang 语言标识
 *  @param set 设置项
 *  @param tag 要渲染成的标签
 */
export const renderLang = (lang: string, set = {}, tag = 'span') => {
  return () => h(tag, set, { default: () => window['$t'](lang) })
}

/**
 * ! 编译会报错，暂不使用
 * * 处理 vite 中无法使用 require 的问题，utils 文件为根路径
 * @param path
 * @param name
 * @returns url
 */
// export const requireUrl = (path: string, name: string) => {
//   return new URL(`${path}/${name}`, import.meta.url).href
// }

/**
 * * 获取错误处理图片，默认 404 图
 * @param path
 * @param name
 * @returns url
 */
export const requireErrorImg = () => {
  return Image_404
}

/**
 * * 全屏操作函数
 * @param isFullscreen
 * @param isEnabled
 * @returns
 */
export const screenfullFn = (isFullscreen?: boolean, isEnabled?: boolean) => {
  // 是否是全屏
  if (isFullscreen) return screenfull.isFullscreen

  // 是否支持全屏
  if (isEnabled) return screenfull.isEnabled

  if (screenfull.isEnabled) {
    screenfull.toggle()
    return
  }
  // TODO lang
  window['$message'].warning('您的浏览器不支持全屏功能！')
}

/**
 * * 设置元素属性
 * @param HTMLElement 元素
 * @param key 键名
 * @param value 键值
 */
export const setDomAttribute = <
  K extends keyof CSSStyleDeclaration,
  V extends CSSStyleDeclaration[K]
>(
  HTMLElement: HTMLElement,
  key: K,
  value: V
) => {
  if (HTMLElement) {
    HTMLElement.style[key] = value
  }
}

/**
 * * 判断是否是 mac
 * @returns boolean
 */
export const isMac = () => {
  return /macintosh|mac os x/i.test(navigator.userAgent)
}

/**
 * * file转url
 */
export const fileToUrl = (file: File): string => {
  const Url = URL || window.URL || window.webkitURL
  const ImageUrl = Url.createObjectURL(file)
  return ImageUrl
}

/**
 * * file转base64
 */
export const fileTobase64 = (file: File, callback: Function) => {
  let reader = new FileReader()
  reader.readAsDataURL(file)
  reader.onload = function (e: ProgressEvent<FileReader>) {
    if (e.target) {
      let base64 = e.target.result
      callback(base64)
    }
  }
}

/**
 * * 挂载监听
 */
export const addEventListener = <K extends keyof WindowEventMap>(
  target: HTMLElement | Document,
  type: K,
  listener: any,
  options?: boolean | AddEventListenerOptions | undefined
) => {
  if (!target) return
  target.addEventListener(
    type,
    throttle(listener, 300, {
      leading: true,
      trailing: false,
    }),
    options
  )
}

/**
 * * 卸载监听
 */
export const removeEventListener = <K extends keyof WindowEventMap>(
  target: HTMLElement | Document,
  type: K,
  listener: any
) => {
  if (!target) return
  target.removeEventListener(type, listener)
}

/**
 * * 截取画面为图片
 * @param html 需要截取的 DOM
 */
export const canvasCut = (html: HTMLElement | null, callback?: Function) => {
  if (!html) {
    window['$message'].error('导出失败！')
    if (callback) callback()
    return
  }

  html2canvas(html).then((canvas: HTMLCanvasElement) => {
    window['$message'].success('导出成功！')
    downloadByA(canvas.toDataURL(), undefined, 'png')
    if (callback) callback()
  })
}