mirror of
https://github.com/advplyr/audiobookshelf.git
synced 2025-11-03 19:07:00 -05:00
456 lines
15 KiB
Vue
456 lines
15 KiB
Vue
<template>
|
|
<div id="epub-reader" class="h-full w-full">
|
|
<div class="h-full flex items-center justify-center">
|
|
<button type="button" aria-label="Previous page" class="w-24 max-w-24 h-full hidden sm:flex items-center overflow-x-hidden justify-center opacity-50 hover:opacity-100">
|
|
<span v-if="hasPrev" class="material-symbols text-6xl" @mousedown.prevent @click="prev">chevron_left</span>
|
|
</button>
|
|
<div id="frame" class="w-full" style="height: 80%">
|
|
<div id="viewer"></div>
|
|
</div>
|
|
<button type="button" aria-label="Next page" class="w-24 max-w-24 h-full hidden sm:flex items-center justify-center overflow-x-hidden opacity-50 hover:opacity-100">
|
|
<span v-if="hasNext" class="material-symbols text-6xl" @mousedown.prevent @click="next">chevron_right</span>
|
|
</button>
|
|
</div>
|
|
</div>
|
|
</template>
|
|
|
|
<script>
|
|
import ePub from 'epubjs'
|
|
|
|
/**
|
|
* @typedef {object} EpubReader
|
|
* @property {ePub.Book} book
|
|
* @property {ePub.Rendition} rendition
|
|
*/
|
|
export default {
|
|
props: {
|
|
libraryItem: {
|
|
type: Object,
|
|
default: () => {}
|
|
},
|
|
playerOpen: Boolean,
|
|
keepProgress: Boolean,
|
|
fileId: String
|
|
},
|
|
data() {
|
|
return {
|
|
windowWidth: 0,
|
|
windowHeight: 0,
|
|
/** @type {ePub.Book} */
|
|
book: null,
|
|
/** @type {ePub.Rendition} */
|
|
rendition: null,
|
|
chapters: [],
|
|
ereaderSettings: {
|
|
theme: 'dark',
|
|
font: 'serif',
|
|
fontScale: 100,
|
|
lineSpacing: 115,
|
|
spread: 'auto',
|
|
textStroke: 0
|
|
}
|
|
}
|
|
},
|
|
watch: {
|
|
playerOpen() {
|
|
this.resize()
|
|
}
|
|
},
|
|
computed: {
|
|
userToken() {
|
|
return this.$store.getters['user/getToken']
|
|
},
|
|
/** @returns {string} */
|
|
libraryItemId() {
|
|
return this.libraryItem?.id
|
|
},
|
|
allowScriptedContent() {
|
|
return this.$store.getters['libraries/getLibraryEpubsAllowScriptedContent']
|
|
},
|
|
hasPrev() {
|
|
return !this.rendition?.location?.atStart
|
|
},
|
|
hasNext() {
|
|
return !this.rendition?.location?.atEnd
|
|
},
|
|
userMediaProgress() {
|
|
if (!this.libraryItemId) return
|
|
return this.$store.getters['user/getUserMediaProgress'](this.libraryItemId)
|
|
},
|
|
savedEbookLocation() {
|
|
if (!this.keepProgress) return null
|
|
if (!this.userMediaProgress?.ebookLocation) return null
|
|
// Validate ebookLocation is an epubcfi
|
|
if (!String(this.userMediaProgress.ebookLocation).startsWith('epubcfi')) return null
|
|
return this.userMediaProgress.ebookLocation
|
|
},
|
|
localStorageLocationsKey() {
|
|
return `ebookLocations-${this.libraryItemId}`
|
|
},
|
|
readerWidth() {
|
|
if (this.windowWidth < 640) return this.windowWidth
|
|
return this.windowWidth - 200
|
|
},
|
|
readerHeight() {
|
|
if (this.windowHeight < 400 || !this.playerOpen) return this.windowHeight
|
|
return this.windowHeight - 164
|
|
},
|
|
ebookUrl() {
|
|
if (this.fileId) {
|
|
return `${this.$config.routerBasePath}/api/items/${this.libraryItemId}/ebook/${this.fileId}`
|
|
}
|
|
return `${this.$config.routerBasePath}/api/items/${this.libraryItemId}/ebook`
|
|
},
|
|
themeRules() {
|
|
const isDark = this.ereaderSettings.theme === 'dark'
|
|
const fontColor = isDark ? '#fff' : '#000'
|
|
const backgroundColor = isDark ? 'rgb(35 35 35)' : 'rgb(255, 255, 255)'
|
|
|
|
const lineSpacing = this.ereaderSettings.lineSpacing / 100
|
|
|
|
const fontScale = this.ereaderSettings.fontScale / 100
|
|
|
|
const textStroke = this.ereaderSettings.textStroke / 100
|
|
|
|
return {
|
|
'*': {
|
|
color: `${fontColor}!important`,
|
|
'background-color': `${backgroundColor}!important`,
|
|
'line-height': lineSpacing * fontScale + 'rem!important',
|
|
'-webkit-text-stroke': textStroke + 'px ' + fontColor + '!important'
|
|
},
|
|
a: {
|
|
color: `${fontColor}!important`
|
|
}
|
|
}
|
|
}
|
|
},
|
|
methods: {
|
|
updateSettings(settings) {
|
|
this.ereaderSettings = settings
|
|
|
|
if (!this.rendition) return
|
|
|
|
this.applyTheme()
|
|
|
|
const fontScale = settings.fontScale || 100
|
|
this.rendition.themes.fontSize(`${fontScale}%`)
|
|
this.rendition.themes.font(settings.font)
|
|
this.rendition.spread(settings.spread || 'auto')
|
|
},
|
|
prev() {
|
|
if (!this.rendition?.manager) return
|
|
return this.rendition?.prev()
|
|
},
|
|
next() {
|
|
if (!this.rendition?.manager) return
|
|
return this.rendition?.next()
|
|
},
|
|
goToChapter(href) {
|
|
if (!this.rendition?.manager) return
|
|
return this.rendition?.display(href)
|
|
},
|
|
/** @returns {object} Returns the chapter that the `position` in the book is in */
|
|
findChapterFromPosition(chapters, position) {
|
|
let foundChapter
|
|
for (let i = 0; i < chapters.length; i++) {
|
|
if (position >= chapters[i].start && (!chapters[i + 1] || position < chapters[i + 1].start)) {
|
|
foundChapter = chapters[i]
|
|
if (chapters[i].subitems && chapters[i].subitems.length > 0) {
|
|
return this.findChapterFromPosition(chapters[i].subitems, position, foundChapter)
|
|
}
|
|
break
|
|
}
|
|
}
|
|
return foundChapter
|
|
},
|
|
/** @returns {Array} Returns an array of chapters that only includes chapters with query results */
|
|
async searchBook(query) {
|
|
const chapters = structuredClone(await this.chapters)
|
|
const searchResults = await Promise.all(this.book.spine.spineItems.map((item) => item.load(this.book.load.bind(this.book)).then(item.find.bind(item, query)).finally(item.unload.bind(item))))
|
|
const mergedResults = [].concat(...searchResults)
|
|
|
|
mergedResults.forEach((chapter) => {
|
|
chapter.start = this.book.locations.percentageFromCfi(chapter.cfi)
|
|
const foundChapter = this.findChapterFromPosition(chapters, chapter.start)
|
|
if (foundChapter) foundChapter.searchResults.push(chapter)
|
|
})
|
|
|
|
let filteredResults = chapters.filter(function f(o) {
|
|
if (o.searchResults.length) return true
|
|
if (o.subitems.length) {
|
|
return (o.subitems = o.subitems.filter(f)).length
|
|
}
|
|
})
|
|
return filteredResults
|
|
},
|
|
keyUp(e) {
|
|
const rtl = this.book.package.metadata.direction === 'rtl'
|
|
if ((e.keyCode || e.which) == 37) {
|
|
return rtl ? this.next() : this.prev()
|
|
} else if ((e.keyCode || e.which) == 39) {
|
|
return rtl ? this.prev() : this.next()
|
|
}
|
|
},
|
|
/**
|
|
* @param {object} payload
|
|
* @param {string} payload.ebookLocation - CFI of the current location
|
|
* @param {string} payload.ebookProgress - eBook Progress Percentage
|
|
*/
|
|
updateProgress(payload) {
|
|
if (!this.keepProgress) return
|
|
this.$axios.$patch(`/api/me/progress/${this.libraryItemId}`, payload, { progress: false }).catch((error) => {
|
|
console.error('EpubReader.updateProgress failed:', error)
|
|
})
|
|
},
|
|
getAllEbookLocationData() {
|
|
const locations = []
|
|
let totalSize = 0 // Total in bytes
|
|
|
|
for (const key in localStorage) {
|
|
if (!localStorage.hasOwnProperty(key) || !key.startsWith('ebookLocations-')) {
|
|
continue
|
|
}
|
|
|
|
try {
|
|
const ebookLocations = JSON.parse(localStorage[key])
|
|
if (!ebookLocations.locations) throw new Error('Invalid locations object')
|
|
|
|
ebookLocations.key = key
|
|
ebookLocations.size = (localStorage[key].length + key.length) * 2
|
|
locations.push(ebookLocations)
|
|
totalSize += ebookLocations.size
|
|
} catch (error) {
|
|
console.error('Failed to parse ebook locations', key, error)
|
|
localStorage.removeItem(key)
|
|
}
|
|
}
|
|
|
|
// Sort by oldest lastAccessed first
|
|
locations.sort((a, b) => a.lastAccessed - b.lastAccessed)
|
|
|
|
return {
|
|
locations,
|
|
totalSize
|
|
}
|
|
},
|
|
/** @param {string} locationString */
|
|
checkSaveLocations(locationString) {
|
|
const maxSizeInBytes = 3000000 // Allow epub locations to take up to 3MB of space
|
|
const newLocationsSize = JSON.stringify({ lastAccessed: Date.now(), locations: locationString }).length * 2
|
|
|
|
// Too large overall
|
|
if (newLocationsSize > maxSizeInBytes) {
|
|
console.error('Epub locations are too large to store. Size =', newLocationsSize)
|
|
return
|
|
}
|
|
|
|
const ebookLocationsData = this.getAllEbookLocationData()
|
|
|
|
let availableSpace = maxSizeInBytes - ebookLocationsData.totalSize
|
|
|
|
// Remove epub locations until there is room for locations
|
|
while (availableSpace < newLocationsSize && ebookLocationsData.locations.length) {
|
|
const oldestLocation = ebookLocationsData.locations.shift()
|
|
console.log(`Removing cached locations for epub "${oldestLocation.key}" taking up ${oldestLocation.size} bytes`)
|
|
availableSpace += oldestLocation.size
|
|
localStorage.removeItem(oldestLocation.key)
|
|
}
|
|
|
|
console.log(`Cacheing epub locations with key "${this.localStorageLocationsKey}" taking up ${newLocationsSize} bytes`)
|
|
this.saveLocations(locationString)
|
|
},
|
|
/** @param {string} locationString */
|
|
saveLocations(locationString) {
|
|
localStorage.setItem(
|
|
this.localStorageLocationsKey,
|
|
JSON.stringify({
|
|
lastAccessed: Date.now(),
|
|
locations: locationString
|
|
})
|
|
)
|
|
},
|
|
loadLocations() {
|
|
const locationsObjString = localStorage.getItem(this.localStorageLocationsKey)
|
|
if (!locationsObjString) return null
|
|
|
|
const locationsObject = JSON.parse(locationsObjString)
|
|
|
|
// Remove invalid location objects
|
|
if (!locationsObject.locations) {
|
|
console.error('Invalid epub locations stored', this.localStorageLocationsKey)
|
|
localStorage.removeItem(this.localStorageLocationsKey)
|
|
return null
|
|
}
|
|
|
|
// Update lastAccessed
|
|
this.saveLocations(locationsObject.locations)
|
|
|
|
return locationsObject.locations
|
|
},
|
|
/** @param {string} location - CFI of the new location */
|
|
relocated(location) {
|
|
if (this.savedEbookLocation === location.start.cfi) {
|
|
return
|
|
}
|
|
|
|
if (location.end.percentage) {
|
|
this.updateProgress({
|
|
ebookLocation: location.start.cfi,
|
|
ebookProgress: location.end.percentage
|
|
})
|
|
} else {
|
|
this.updateProgress({
|
|
ebookLocation: location.start.cfi
|
|
})
|
|
}
|
|
},
|
|
initEpub() {
|
|
/** @type {EpubReader} */
|
|
const reader = this
|
|
|
|
/** @type {ePub.Book} */
|
|
reader.book = new ePub(reader.ebookUrl, {
|
|
width: this.readerWidth,
|
|
height: this.readerHeight - 50,
|
|
openAs: 'epub',
|
|
requestHeaders: {
|
|
Authorization: `Bearer ${this.userToken}`
|
|
}
|
|
})
|
|
|
|
/** @type {ePub.Rendition} */
|
|
reader.rendition = reader.book.renderTo('viewer', {
|
|
width: this.readerWidth,
|
|
height: this.readerHeight * 0.8,
|
|
allowScriptedContent: this.allowScriptedContent,
|
|
spread: 'auto',
|
|
snap: true,
|
|
manager: 'continuous',
|
|
flow: 'paginated'
|
|
})
|
|
|
|
// load saved progress
|
|
reader.rendition.display(this.savedEbookLocation || reader.book.locations.start)
|
|
|
|
reader.rendition.on('rendered', () => {
|
|
this.applyTheme()
|
|
})
|
|
|
|
reader.book.ready.then(() => {
|
|
// set up event listeners
|
|
reader.rendition.on('relocated', reader.relocated)
|
|
reader.rendition.on('keydown', reader.keyUp)
|
|
|
|
reader.rendition.on('touchstart', (event) => {
|
|
this.$emit('touchstart', event)
|
|
})
|
|
reader.rendition.on('touchend', (event) => {
|
|
this.$emit('touchend', event)
|
|
})
|
|
|
|
// load ebook cfi locations
|
|
const savedLocations = this.loadLocations()
|
|
if (savedLocations) {
|
|
reader.book.locations.load(savedLocations)
|
|
} else {
|
|
reader.book.locations.generate().then(() => {
|
|
this.checkSaveLocations(reader.book.locations.save())
|
|
})
|
|
}
|
|
this.getChapters()
|
|
})
|
|
},
|
|
getChapters() {
|
|
// Load the list of chapters in the book. See https://github.com/futurepress/epub.js/issues/759
|
|
const toc = this.book?.navigation?.toc || []
|
|
|
|
const tocTree = []
|
|
|
|
const resolveURL = (url, relativeTo) => {
|
|
// see https://github.com/futurepress/epub.js/issues/1084
|
|
// HACK-ish: abuse the URL API a little to resolve the path
|
|
// the base needs to be a valid URL, or it will throw a TypeError,
|
|
// so we just set a random base URI and remove it later
|
|
const base = 'https://example.invalid/'
|
|
return new URL(url, base + relativeTo).href.replace(base, '')
|
|
}
|
|
|
|
const basePath = this.book.packaging.navPath || this.book.packaging.ncxPath
|
|
|
|
const createTree = async (toc, parent) => {
|
|
const promises = toc.map(async (tocItem, i) => {
|
|
const href = resolveURL(tocItem.href, basePath)
|
|
const id = href.split('#')[1]
|
|
const item = this.book.spine.get(href)
|
|
await item.load(this.book.load.bind(this.book))
|
|
const el = id ? item.document.getElementById(id) : item.document.body
|
|
|
|
const cfi = item.cfiFromElement(el)
|
|
|
|
parent[i] = {
|
|
title: tocItem.label.trim(),
|
|
subitems: [],
|
|
href,
|
|
cfi,
|
|
start: this.book.locations.percentageFromCfi(cfi),
|
|
end: null, // set by flattenChapters()
|
|
id: null, // set by flattenChapters()
|
|
searchResults: []
|
|
}
|
|
|
|
if (tocItem.subitems) {
|
|
await createTree(tocItem.subitems, parent[i].subitems)
|
|
}
|
|
})
|
|
await Promise.all(promises)
|
|
}
|
|
return createTree(toc, tocTree).then(() => {
|
|
this.chapters = tocTree
|
|
})
|
|
},
|
|
flattenChapters(chapters) {
|
|
// Convert the nested epub chapters into something that looks like audiobook chapters for player-ui
|
|
const unwrap = (chapters) => {
|
|
return chapters.reduce((acc, chapter) => {
|
|
return chapter.subitems ? [...acc, chapter, ...unwrap(chapter.subitems)] : [...acc, chapter]
|
|
}, [])
|
|
}
|
|
let flattenedChapters = unwrap(chapters)
|
|
|
|
flattenedChapters = flattenedChapters.sort((a, b) => a.start - b.start)
|
|
for (let i = 0; i < flattenedChapters.length; i++) {
|
|
flattenedChapters[i].id = i
|
|
if (i < flattenedChapters.length - 1) {
|
|
flattenedChapters[i].end = flattenedChapters[i + 1].start
|
|
} else {
|
|
flattenedChapters[i].end = 1
|
|
}
|
|
}
|
|
return flattenedChapters
|
|
},
|
|
resize() {
|
|
this.windowWidth = window.innerWidth
|
|
this.windowHeight = window.innerHeight
|
|
this.rendition?.resize(this.readerWidth, this.readerHeight * 0.8)
|
|
},
|
|
applyTheme() {
|
|
if (!this.rendition) return
|
|
this.rendition.getContents().forEach((c) => {
|
|
c.addStylesheetRules(this.themeRules)
|
|
})
|
|
}
|
|
},
|
|
mounted() {
|
|
this.windowWidth = window.innerWidth
|
|
this.windowHeight = window.innerHeight
|
|
window.addEventListener('resize', this.resize)
|
|
this.initEpub()
|
|
},
|
|
beforeDestroy() {
|
|
window.removeEventListener('resize', this.resize)
|
|
this.book?.destroy()
|
|
}
|
|
}
|
|
</script>
|