d9cdc46f84
This uses a simple version number check, to prevent breakage if the example is used with older PDF.js versions.
90 lines
2.9 KiB
JavaScript
90 lines
2.9 KiB
JavaScript
/* Copyright 2014 Mozilla Foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
if (!pdfjsLib.getDocument || !pdfjsViewer.PDFPageView) {
|
|
// eslint-disable-next-line no-alert
|
|
alert("Please build the pdfjs-dist library using\n `gulp dist-install`");
|
|
}
|
|
|
|
// The workerSrc property shall be specified.
|
|
//
|
|
pdfjsLib.GlobalWorkerOptions.workerSrc =
|
|
"../../node_modules/pdfjs-dist/build/pdf.worker.js";
|
|
|
|
// Some PDFs need external cmaps.
|
|
//
|
|
const CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
|
|
const CMAP_PACKED = true;
|
|
|
|
const DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
|
|
const PAGE_TO_VIEW = 1;
|
|
const SCALE = 1.0;
|
|
|
|
const ENABLE_XFA = true;
|
|
|
|
const container = document.getElementById("pageContainer");
|
|
|
|
const eventBus = new pdfjsViewer.EventBus();
|
|
|
|
// Loading document.
|
|
const loadingTask = pdfjsLib.getDocument({
|
|
url: DEFAULT_URL,
|
|
cMapUrl: CMAP_URL,
|
|
cMapPacked: CMAP_PACKED,
|
|
enableXfa: ENABLE_XFA,
|
|
});
|
|
(async function () {
|
|
const pdfDocument = await loadingTask.promise;
|
|
// Document loaded, retrieving the page.
|
|
const pdfPage = await pdfDocument.getPage(PAGE_TO_VIEW);
|
|
|
|
const match = /^(\d+)\.(\d+)\.(\d+)$/.exec(pdfjsLib.version);
|
|
if (match && (match[1] | 0) >= 3 && (match[2] | 0) >= 2) {
|
|
// Creating the page view with default parameters.
|
|
const pdfPageView = new pdfjsViewer.PDFPageView({
|
|
container,
|
|
id: PAGE_TO_VIEW,
|
|
scale: SCALE,
|
|
defaultViewport: pdfPage.getViewport({ scale: SCALE }),
|
|
eventBus,
|
|
});
|
|
// Associate the actual page with the view, and draw it.
|
|
pdfPageView.setPdfPage(pdfPage);
|
|
return pdfPageView.draw();
|
|
}
|
|
// Creating the page view with default parameters.
|
|
const pdfPageView = new pdfjsViewer.PDFPageView({
|
|
container,
|
|
id: PAGE_TO_VIEW,
|
|
scale: SCALE,
|
|
defaultViewport: pdfPage.getViewport({ scale: SCALE }),
|
|
eventBus,
|
|
// We can enable text/annotation/xfa/struct-layers, as needed.
|
|
textLayerFactory: !pdfDocument.isPureXfa
|
|
? new pdfjsViewer.DefaultTextLayerFactory()
|
|
: null,
|
|
annotationLayerFactory: new pdfjsViewer.DefaultAnnotationLayerFactory(),
|
|
xfaLayerFactory: pdfDocument.isPureXfa
|
|
? new pdfjsViewer.DefaultXfaLayerFactory()
|
|
: null,
|
|
structTreeLayerFactory: new pdfjsViewer.DefaultStructTreeLayerFactory(),
|
|
});
|
|
// Associate the actual page with the view, and draw it.
|
|
pdfPageView.setPdfPage(pdfPage);
|
|
return pdfPageView.draw();
|
|
})();
|