pdf.js/examples/components/pageviewer.js
Jonas Jenwald 9a437a158f [api-minor] Deprecate getGlobalEventBus and update the "viewer components" examples accordingly
To avoid outright breaking third-party usages of the "viewer components" the `getGlobalEventBus` functionality is left intact, but a deprecation message is printed if the function is invoked.

The various examples are updated to *explicitly* initialize an `EventBus` instance, and provide that when initializing the relevant viewer components.
2020-02-27 14:44:48 +01:00

65 lines
2.1 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) {
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.
//
var CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
var CMAP_PACKED = true;
var DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
var PAGE_TO_VIEW = 1;
var SCALE = 1.0;
var container = document.getElementById("pageContainer");
var eventBus = new pdfjsViewer.EventBus();
// Loading document.
var loadingTask = pdfjsLib.getDocument({
url: DEFAULT_URL,
cMapUrl: CMAP_URL,
cMapPacked: CMAP_PACKED,
});
loadingTask.promise.then(function(pdfDocument) {
// Document loaded, retrieving the page.
return pdfDocument.getPage(PAGE_TO_VIEW).then(function(pdfPage) {
// Creating the page view with default parameters.
var pdfPageView = new pdfjsViewer.PDFPageView({
container: container,
id: PAGE_TO_VIEW,
scale: SCALE,
defaultViewport: pdfPage.getViewport({ scale: SCALE }),
eventBus: eventBus,
// We can enable text/annotations layers, if needed
textLayerFactory: new pdfjsViewer.DefaultTextLayerFactory(),
annotationLayerFactory: new pdfjsViewer.DefaultAnnotationLayerFactory(),
});
// Associates the actual page with the view, and drawing it
pdfPageView.setPdfPage(pdfPage);
return pdfPageView.draw();
});
});