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