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File size: 1,900 Bytes
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<script lang="ts">
import pdfjsLib from "pdfjs-dist";
pdfjsLib.GlobalWorkerOptions.workerSrc = "https://cdn.jsdelivr.net/npm/pdfjs-dist/build/pdf.worker.min.js";
let pdfDoc;
let numPages = 1;
let currentPage = 1;
let canvasRef;
export let value;
async function loadPDF(value) {
const loadingTask = pdfjsLib.getDocument(value.url);
pdfDoc = await loadingTask.promise;
numPages = pdfDoc.numPages;
currentPage = 1;
renderPage();
}
function renderPage() {
pdfDoc.getPage(currentPage).then((page) => {
const viewport = page.getViewport({ scale: 1.5 });
const canvasContext = canvasRef.getContext("2d");
canvasRef.width = viewport.width;
canvasRef.height = viewport.height;
page.render({
canvasContext,
viewport,
});
});
}
function nextPage() {
if (currentPage < numPages) {
currentPage++;
renderPage();
}
}
function prevPage() {
if (currentPage > 1) {
currentPage--;
renderPage();
}
}
$: if (value?.url) {
loadPDF(value);
}
</script>
<div>
<div class="pdf-viewer">
<canvas bind:this={canvasRef}></canvas>
</div>
<div class="controls">
<button on:click={prevPage} disabled={currentPage === 1}>⬅️ Anterior</button>
<span>{currentPage} / {numPages}</span>
<button on:click={nextPage} disabled={currentPage === numPages}>Siguiente ➡️</button>
</div>
</div>
<style>
.pdf-viewer {
display: flex;
justify-content: center;
align-items: center;
height: 500px;
}
.controls {
display: flex;
justify-content: center;
gap: 10px;
margin-top: 10px;
}
</style> |