audiobookshelf/client/components/app/ComicReader.vue

219 lines
6.4 KiB
Vue

<template>
<div class="w-full">
<div v-show="showPageMenu" v-click-outside="clickOutside" class="pagemenu absolute top-9 right-20 rounded-md overflow-y-auto bg-white shadow-lg z-20 border border-gray-400">
<div v-for="(file, index) in pages" :key="file" class="w-full cursor-pointer hover:bg-gray-200 px-2 py-1" @click="setPage(index)">
<p class="text-sm">{{ file }}</p>
</div>
</div>
<div class="absolute top-0 right-40 border-b border-l border-r border-gray-400 hover:bg-gray-200 cursor-pointer rounded-b-md bg-gray-50 w-10 h-9 flex items-center justify-center text-center z-20" @mousedown.prevent @click.stop.prevent="showPageMenu = !showPageMenu">
<span class="material-icons">menu</span>
</div>
<div class="absolute top-0 right-20 border-b border-l border-r border-gray-400 rounded-b-md bg-gray-50 px-2 h-9 flex items-center text-center">
<p class="font-mono">{{ page + 1 }} / {{ numPages }}</p>
</div>
<div class="overflow-hidden m-auto comicwrapper relative">
<div class="flex items-center justify-center">
<div class="px-12">
<span v-show="loadedFirstPage" class="material-icons text-5xl text-black" :class="!canGoPrev ? 'text-opacity-10' : 'cursor-pointer text-opacity-30 hover:text-opacity-90'" @click.stop.prevent="goPrevPage" @mousedown.prevent>arrow_back_ios</span>
</div>
<img v-if="mainImg" :src="mainImg" class="object-contain comicimg" />
<div class="px-12">
<span v-show="loadedFirstPage" class="material-icons text-5xl text-black" :class="!canGoNext ? 'text-opacity-10' : 'cursor-pointer text-opacity-30 hover:text-opacity-90'" @click.stop.prevent="goNextPage" @mousedown.prevent>arrow_forward_ios</span>
</div>
</div>
<div v-show="loading" class="w-full h-full absolute top-0 left-0 flex items-center justify-center z-10">
<ui-loading-indicator />
</div>
</div>
<!-- <div v-show="loading" class="w-screen h-screen absolute top-0 left-0 bg-black bg-opacity-20 flex items-center justify-center">
<ui-loading-indicator />
</div> -->
</div>
</template>
<script>
import Path from 'path'
import { Archive } from 'libarchive.js/main.js'
Archive.init({
workerUrl: '/libarchive/worker-bundle.js'
})
// Archive.init()
export default {
props: {
src: String
},
data() {
return {
loading: false,
pages: null,
filesObject: null,
mainImg: null,
page: 0,
numPages: 0,
showPageMenu: false,
loadTimeout: null,
loadedFirstPage: false
}
},
watch: {
src: {
immediate: true,
handler(newVal) {
this.extract()
}
}
},
computed: {
canGoNext() {
return this.page < this.numPages - 1
},
canGoPrev() {
return this.page > 0
}
},
methods: {
clickOutside() {
if (this.showPageMenu) this.showPageMenu = false
},
goNextPage() {
if (!this.canGoNext) return
this.setPage(this.page + 1)
},
goPrevPage() {
if (!this.canGoPrev) return
this.setPage(this.page - 1)
},
setPage(index) {
if (index < 0 || index > this.numPages - 1) {
return
}
var filename = this.pages[index]
this.page = index
return this.extractFile(filename)
},
setLoadTimeout() {
this.loadTimeout = setTimeout(() => {
this.loading = true
}, 150)
},
extractFile(filename) {
return new Promise(async (resolve) => {
this.setLoadTimeout()
var file = await this.filesObject[filename].extract()
var reader = new FileReader()
reader.onload = (e) => {
this.mainImg = e.target.result
this.loading = false
resolve()
}
reader.onerror = (e) => {
console.error(e)
this.$toast.error('Read page file failed')
this.loading = false
resolve()
}
reader.readAsDataURL(file)
clearTimeout(this.loadTimeout)
})
},
async extract() {
this.loading = true
console.log('Extracting', this.src)
var buff = await this.$axios.$get(this.src, {
responseType: 'blob'
})
const archive = await Archive.open(buff)
this.filesObject = await archive.getFilesObject()
var filenames = Object.keys(this.filesObject)
this.parseFilenames(filenames)
this.numPages = this.pages.length
if (this.pages.length) {
this.loading = false
await this.setPage(0)
this.loadedFirstPage = true
} else {
this.$toast.error('Unable to extract pages')
this.loading = false
}
},
parseImageFilename(filename) {
var basename = Path.basename(filename, Path.extname(filename))
var numbersinpath = basename.match(/\d{1,4}/g)
if (!numbersinpath || !numbersinpath.length) {
return {
index: -1,
filename
}
} else {
return {
index: Number(numbersinpath[numbersinpath.length - 1]),
filename
}
}
},
parseFilenames(filenames) {
const acceptableImages = ['.jpeg', '.jpg', '.png']
var imageFiles = filenames.filter((f) => {
return acceptableImages.includes((Path.extname(f) || '').toLowerCase())
})
var imageFileObjs = imageFiles.map((img) => {
return this.parseImageFilename(img)
})
var imagesWithNum = imageFileObjs.filter((i) => i.index >= 0)
var orderedImages = imagesWithNum.sort((a, b) => a.index - b.index).map((i) => i.filename)
var noNumImages = imageFileObjs.filter((i) => i.index < 0)
orderedImages = orderedImages.concat(noNumImages.map((i) => i.filename))
this.pages = orderedImages
},
keyUp(e) {
if ((e.keyCode || e.which) == 37) {
this.goPrevPage()
} else if ((e.keyCode || e.which) == 39) {
this.goNextPage()
} else if ((e.keyCode || e.which) == 27) {
this.unregisterListeners()
this.$emit('close')
}
},
registerListeners() {
document.addEventListener('keyup', this.keyUp)
},
unregisterListeners() {
document.removeEventListener('keyup', this.keyUp)
}
},
mounted() {
this.registerListeners()
},
beforeDestroy() {
this.unregisterListeners()
}
}
</script>
<style scoped>
.pagemenu {
max-height: calc(100vh - 60px);
}
.comicimg {
height: calc(100vh - 40px);
margin: auto;
}
.comicwrapper {
width: calc(100vw - 300px);
height: calc(100vh - 40px);
}
</style>