41 lines
1.5 KiB
TypeScript
41 lines
1.5 KiB
TypeScript
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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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// @ts-expect-error TS(2339) FIXME: Property 'PDFLib' does not exist on type 'Window &... Remove this comment to see the full error message
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const { rgb } = window.PDFLib;
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export async function redact(redactions: any, canvasScale: any) {
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showLoader('Applying redactions...');
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try {
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const pdfPages = state.pdfDoc.getPages();
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const conversionScale = 1 / canvasScale;
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redactions.forEach((r: any) => {
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const page = pdfPages[r.pageIndex];
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const { height: pageHeight } = page.getSize();
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// Convert canvas coordinates back to PDF coordinates
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const pdfX = r.canvasX * conversionScale;
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const pdfWidth = r.canvasWidth * conversionScale;
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const pdfHeight = r.canvasHeight * conversionScale;
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const pdfY = pageHeight - (r.canvasY * conversionScale) - pdfHeight;
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page.drawRectangle({
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x: pdfX,
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y: pdfY,
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width: pdfWidth,
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height: pdfHeight,
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color: rgb(0, 0, 0),
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});
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});
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const redactedBytes = await state.pdfDoc.save();
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downloadFile(new Blob([redactedBytes], { type: 'application/pdf' }), 'redacted.pdf');
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} catch (e) {
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console.error(e);
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showAlert('Error', 'Failed to apply redactions.');
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} finally {
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hideLoader();
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}
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}
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