debian-mirror-gitlab/app/assets/javascripts/pdf/index.vue

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<script>
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import pdfjsLib from 'pdfjs-dist/build/pdf';
import workerSrc from 'pdfjs-dist/build/pdf.worker.min';
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import page from './page/index.vue';
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export default {
components: { page },
props: {
pdf: {
type: [String, Uint8Array],
required: true,
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},
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},
data() {
return {
pages: [],
};
},
computed: {
document() {
return typeof this.pdf === 'string' ? this.pdf : { data: this.pdf };
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},
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hasPDF() {
return this.pdf && this.pdf.length > 0;
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},
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availablePages() {
return this.pages.filter(Boolean);
},
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},
watch: { pdf: 'load' },
mounted() {
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pdfjsLib.GlobalWorkerOptions.workerSrc = workerSrc;
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if (this.hasPDF) this.load();
},
methods: {
load() {
this.pages = [];
return pdfjsLib
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.getDocument({
url: this.document,
cMapUrl: '/assets/webpack/cmaps/',
cMapPacked: true,
})
.promise.then(this.renderPages)
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.then((pages) => {
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this.pages = pages;
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this.$emit('pdflabload', pages.length);
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})
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.catch((error) => {
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this.$emit('pdflaberror', error);
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});
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},
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renderPages(pdf) {
const pagePromises = [];
for (let num = 1; num <= pdf.numPages; num += 1) {
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pagePromises.push(pdf.getPage(num));
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}
return Promise.all(pagePromises);
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},
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},
};
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</script>
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<template>
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<div v-if="hasPDF" class="pdf-viewer">
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<page v-for="(page, index) in availablePages" :key="index" :page="page" :number="index + 1" />
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</div>
</template>
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<style>
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.pdf-viewer {
background: url('./assets/img/bg.gif');
display: flex;
flex-flow: column nowrap;
}
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</style>