69 lines
2.3 KiB
TypeScript
69 lines
2.3 KiB
TypeScript
import { showLoader, hideLoader, showAlert } from '../ui.js';
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import { downloadFile } from '../utils/helpers.js';
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import { state } from '../state.js';
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import { PDFDocument as PDFLibDocument } from 'pdf-lib';
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async function convertImageToPngBytes(file: any) {
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return new Promise((resolve, reject) => {
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const img = new Image();
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const reader = new FileReader();
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reader.onload = (e) => {
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img.onload = async () => {
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const canvas = document.createElement('canvas');
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canvas.width = img.width;
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canvas.height = img.height;
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const ctx = canvas.getContext('2d');
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ctx.drawImage(img, 0, 0);
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const pngBlob = await new Promise((res) =>
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canvas.toBlob(res, 'image/png')
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);
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// @ts-expect-error TS(2339) FIXME: Property 'arrayBuffer' does not exist on type 'unk... Remove this comment to see the full error message
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const pngBytes = await pngBlob.arrayBuffer();
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resolve(pngBytes);
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};
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img.onerror = () => reject(new Error('Failed to load image.'));
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// @ts-expect-error TS(2322) FIXME: Type 'string | ArrayBuffer' is not assignable to t... Remove this comment to see the full error message
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img.src = e.target.result;
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};
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reader.onerror = () => reject(new Error('Failed to read file.'));
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reader.readAsDataURL(file);
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});
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}
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export async function svgToPdf() {
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if (state.files.length === 0) {
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showAlert('No Files', 'Please select at least one SVG file.');
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return;
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}
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showLoader('Converting SVG to PDF...');
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try {
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const pdfDoc = await PDFLibDocument.create();
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for (const file of state.files) {
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const pngBytes = await convertImageToPngBytes(file);
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const pngImage = await pdfDoc.embedPng(pngBytes as ArrayBuffer);
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const page = pdfDoc.addPage([pngImage.width, pngImage.height]);
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page.drawImage(pngImage, {
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x: 0,
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y: 0,
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width: pngImage.width,
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height: pngImage.height,
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});
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}
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const pdfBytes = await pdfDoc.save();
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downloadFile(
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new Blob([new Uint8Array(pdfBytes)], { type: 'application/pdf' }),
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'from_svgs.pdf'
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);
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} catch (e) {
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console.error(e);
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showAlert(
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'Error',
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'Failed to convert SVG to PDF. One of the files may be invalid.'
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);
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} finally {
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hideLoader();
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}
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}
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