v-viewer：一个方便易用的vue3 图片查看器
v-viewer中文文档

一、安装

1、npm/yarn 安装

npm install v-viewer@next or yarn add viewer@next

• 全局注册插件

引入v-viewer及必需的css样式，并使用app.use()注册插件
组件、指令和api会被一起安装到app全局

import { createApp } from 'vue'
import App from './App.vue' // 视自己项目而定
import 'viewerjs/dist/viewer.css'
import VueViewer from 'v-viewer'

const app = createApp(App)

app.use(VueViewer, {
  defaultOptions: {
    // 自定义默认配置
  }
}

• 局部注册

import 'viewerjs/dist/viewer.css'
import { component as Viewer } from "v-viewer"

export default {
  components: { Viewer },
}

2、cdn引入：

<link href="//unpkg.com/viewerjs/dist/viewer.css" rel="stylesheet">
<script src="//unpkg.com/viewerjs/dist/viewer.js"></script>
<script src="//unpkg.com/v-viewer@next/dist/index.umd.js"></script>

全局注册插件：

app.use(VueViewer.default, {
  defaultOptions: {
    // 自定义默认配置
  }
}

二、main.js设置默认配置

viewerjs - options
v-viewer: Live demo

示例：

defaultOptions: {
    zIndex: 3000,
    inline: false, // Default: false. Enable inline mode.
    button: true, // Show the button on the top-right of the viewer.
    navbar: true, // Specify the visibility of the navbar.
    title: false, // Specify the visibility and the content of the title.
    toolbar: false, // Specify the visibility and layout of the toolbar its buttons.
    tooltip: true, // Show the tooltip with image ratio (percentage) when zooming in or zooming out.
    movable: true, // Enable to move the image.
    zoomable: true, // Enable to zoom the image.
    rotatable: false, // Enable to rotate the image.
    scalable: true, // Enable to scale the image.
    transition: true, // Enable CSS3 Transition for some special elements.
    fullscreen: false, // Enable to request full screen when play.
    keyboard: true, // Enable keyboard support.
    url: 'src', // Default: 'src'. Define where to get the original image URL for viewing.
}

三、使用

通过指令调用：

<div v-viewer>
	<img v-for="src in images" :key="src" :src="src"/>
</div>

组件形式使用：

<viewer :images="images">
  <img v-for="src in images" :key="src" :src="src">
</viewer>

通过API调用：

<a v-if="images?.length" @click="showImagesInViewer(images)">查看</a>

showImagesInViewer(urls) {
	urls instanceof Array &&
	urls?.length &&
	this.$viewerApi({ images: urls })
},

• vue3 setup

由于全局注册v-viewer，组件、指令和api会被一起安装到app全局，可直接获取并使用全局变量 $viewerApi

import { getCurrentInstance } from 'vue'

const $viewerApi = getCurrentInstance().appContext.config.globalProperties.$viewerApi

$viewerApi({ images: [] })

或者，手动导入 api 使用
感谢 @高中不复，大学纷飞 在评论区补充的方案

import { api as viewerApi } from 'v-viewer'

viewerApi({ images: [] })