139 lines
4.3 KiB
Vue
139 lines
4.3 KiB
Vue
<template>
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<div class="w-full h-full">
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<div class="h-full max-h-full w-full">
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<div class="ebook-viewer absolute overflow-y-scroll left-0 right-0 top-16 w-full max-w-4xl m-auto z-10 border border-black border-opacity-20 shadow-md bg-white">
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<iframe title="html-viewer" width="100%"> Loading </iframe>
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</div>
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</div>
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</div>
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</template>
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<script>
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import MobiParser from '@/assets/ebooks/mobi.js'
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import HtmlParser from '@/assets/ebooks/htmlParser.js'
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import defaultCss from '@/assets/ebooks/basic.js'
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export default {
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props: {
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libraryItem: {
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type: Object,
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default: () => {}
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},
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playerOpen: Boolean,
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fileId: String
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},
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data() {
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return {}
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},
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computed: {
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userToken() {
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return this.$store.getters['user/getToken']
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},
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libraryItemId() {
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return this.libraryItem?.id
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},
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ebookUrl() {
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if (this.fileId) {
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return `/api/items/${this.libraryItemId}/ebook/${this.fileId}`
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}
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return `/api/items/${this.libraryItemId}/ebook`
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}
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},
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methods: {
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addHtmlCss() {
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let iframe = document.getElementsByTagName('iframe')[0]
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if (!iframe) return
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let doc = iframe.contentDocument
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if (!doc) return
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let style = doc.createElement('style')
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style.id = 'default-style'
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style.textContent = defaultCss
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doc.head.appendChild(style)
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},
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handleIFrameHeight(iFrame) {
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const isElement = (obj) => !!(obj && obj.nodeType === 1)
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var body = iFrame.contentWindow.document.body,
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html = iFrame.contentWindow.document.documentElement
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iFrame.height = Math.max(body.scrollHeight, body.offsetHeight, html.clientHeight, html.scrollHeight, html.offsetHeight) * 2
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setTimeout(() => {
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let lastchild = body.lastElementChild
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let lastEle = body.lastChild
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let itemAs = body.querySelectorAll('a')
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let itemPs = body.querySelectorAll('p')
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let lastItemA = itemAs[itemAs.length - 1]
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let lastItemP = itemPs[itemPs.length - 1]
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let lastItem
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if (isElement(lastItemA) && isElement(lastItemP)) {
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if (lastItemA.clientHeight + lastItemA.offsetTop > lastItemP.clientHeight + lastItemP.offsetTop) {
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lastItem = lastItemA
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} else {
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lastItem = lastItemP
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}
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}
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if (!lastchild && !lastItem && !lastEle) return
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if (lastEle.nodeType === 3 && !lastchild && !lastItem) return
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let nodeHeight = 0
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if (lastEle.nodeType === 3 && document.createRange) {
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let range = document.createRange()
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range.selectNodeContents(lastEle)
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if (range.getBoundingClientRect) {
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let rect = range.getBoundingClientRect()
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if (rect) {
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nodeHeight = rect.bottom - rect.top
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}
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}
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}
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var lastChildHeight = isElement(lastchild) ? lastchild.clientHeight + lastchild.offsetTop : 0
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var lastEleHeight = isElement(lastEle) ? lastEle.clientHeight + lastEle.offsetTop : 0
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var lastItemHeight = isElement(lastItem) ? lastItem.clientHeight + lastItem.offsetTop : 0
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iFrame.height = Math.max(lastChildHeight, lastEleHeight, lastItemHeight) + 100 + nodeHeight
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}, 500)
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},
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async initMobi() {
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// Fetch mobi file as blob
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var buff = await this.$axios.$get(this.ebookUrl, {
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responseType: 'blob',
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headers: {
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Authorization: `Bearer ${this.userToken}`
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}
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})
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var reader = new FileReader()
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reader.onload = async (event) => {
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var file_content = event.target.result
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let mobiFile = new MobiParser(file_content)
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let content = await mobiFile.render()
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let htmlParser = new HtmlParser(new DOMParser().parseFromString(content.outerHTML, 'text/html'))
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var anchoredDoc = htmlParser.getAnchoredDoc()
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let iFrame = document.getElementsByTagName('iframe')[0]
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iFrame.contentDocument.body.innerHTML = anchoredDoc.documentElement.outerHTML
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// Add css
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let style = iFrame.contentDocument.createElement('style')
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style.id = 'default-style'
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style.textContent = defaultCss
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iFrame.contentDocument.head.appendChild(style)
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this.handleIFrameHeight(iFrame)
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}
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reader.readAsArrayBuffer(buff)
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}
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},
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mounted() {
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this.initMobi()
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}
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}
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</script>
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<style>
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.ebook-viewer {
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height: calc(100% - 96px);
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}
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</style> |