57 lines
2.1 KiB
JavaScript
57 lines
2.1 KiB
JavaScript
'use strict';
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var DEFAULT_SCALE = 1.5;
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// Parse query string to extract some parameters (it can fail for some input)
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var query = document.location.href.replace(/^[^?]*(\?([^#]*))?(#.*)?/, '$2');
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var queryParams = query ? JSON.parse('{' + query.split('&').map(function (a) {
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return a.split('=').map(decodeURIComponent).map(JSON.stringify).join(': ');
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}).join(',') + '}') : {};
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var url = queryParams.file || '../../web/compressed.tracemonkey-pldi-09.pdf';
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function renderDocument(pdf, svgLib) {
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var promise = Promise.resolve();
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for (var i = 1; i <= pdf.numPages; i++) {
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// Using promise to fetch and render the next page
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promise = promise.then(function (pageNum) {
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return pdf.getPage(pageNum).then(function (page) {
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var viewport = page.getViewport(DEFAULT_SCALE);
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var container = document.createElement('div');
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container.id = 'pageContainer' + pageNum;
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container.className = 'pageContainer';
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container.style.width = viewport.width + 'px';
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container.style.height = viewport.height + 'px';
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document.body.appendChild(container);
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return page.getOperatorList().then(function (opList) {
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var svgGfx = new svgLib.SVGGraphics(page.commonObjs, page.objs);
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return svgGfx.getSVG(opList, viewport).then(function (svg) {
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container.appendChild(svg);
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});
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});
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});
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}.bind(null, i));
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}
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}
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Promise.all([System.import('pdfjs/display/api'),
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System.import('pdfjs/display/svg'),
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System.import('pdfjs/display/global'),
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System.resolve('pdfjs/worker_loader')])
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.then(function (modules) {
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var api = modules[0], svg = modules[1], global = modules[2];
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// In production, change this to point to the built `pdf.worker.js` file.
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global.PDFJS.workerSrc = modules[3];
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// In production, change this to point to where the cMaps are placed.
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global.PDFJS.cMapUrl = '../../external/bcmaps/';
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global.PDFJS.cMapPacked = true;
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// Fetch the PDF document from the URL using promises.
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api.getDocument(url).then(function (doc) {
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renderDocument(doc, svg);
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});
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});
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