98f570c103
For certain canvas-related errors (and probably others), the browser rendering exceptions may be propagated "as-is" to the PDF.js code. In this case, the exceptions are of the somewhat cryptic `NS_ERROR_FAILURE` type. Unfortunately these aren't actual `Error`s, which thus ends up unintentionally triggering the `assert` in `PDFPageProxy._abortOperatorList`; sorry about that!
2729 lines
87 KiB
JavaScript
2729 lines
87 KiB
JavaScript
/* Copyright 2012 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* globals requirejs, __non_webpack_require__ */
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/* eslint no-var: error */
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/**
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* @module pdfjsLib
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*/
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import {
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AbortException, assert, createPromiseCapability, getVerbosityLevel, info,
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InvalidPDFException, isArrayBuffer, isSameOrigin, MissingPDFException,
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NativeImageDecoding, PasswordException, setVerbosityLevel, shadow,
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stringToBytes, UnexpectedResponseException, UnknownErrorException,
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unreachable, warn
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} from '../shared/util';
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import {
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DOMCanvasFactory, DOMCMapReaderFactory, loadScript, PageViewport,
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releaseImageResources, RenderingCancelledException, StatTimer
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} from './display_utils';
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import { FontFaceObject, FontLoader } from './font_loader';
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import { apiCompatibilityParams } from './api_compatibility';
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import { CanvasGraphics } from './canvas';
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import globalScope from '../shared/global_scope';
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import { GlobalWorkerOptions } from './worker_options';
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import { MessageHandler } from '../shared/message_handler';
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import { Metadata } from './metadata';
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import { PDFDataTransportStream } from './transport_stream';
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import { WebGLContext } from './webgl';
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const DEFAULT_RANGE_CHUNK_SIZE = 65536; // 2^16 = 65536
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const RENDERING_CANCELLED_TIMEOUT = 100; // ms
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let isWorkerDisabled = false;
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let fallbackWorkerSrc;
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let fakeWorkerFilesLoader = null;
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if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('GENERIC')) {
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let useRequireEnsure = false;
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// For GENERIC build we need to add support for different fake file loaders
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// for different frameworks.
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if (typeof window === 'undefined') {
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// node.js - disable worker and set require.ensure.
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isWorkerDisabled = true;
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if (typeof __non_webpack_require__.ensure === 'undefined') {
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__non_webpack_require__.ensure = __non_webpack_require__('node-ensure');
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}
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useRequireEnsure = true;
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} else if (typeof __non_webpack_require__ !== 'undefined' &&
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typeof __non_webpack_require__.ensure === 'function') {
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useRequireEnsure = true;
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}
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if (typeof requirejs !== 'undefined' && requirejs.toUrl) {
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fallbackWorkerSrc = requirejs.toUrl('pdfjs-dist/build/pdf.worker.js');
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}
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const dynamicLoaderSupported =
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typeof requirejs !== 'undefined' && requirejs.load;
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fakeWorkerFilesLoader = useRequireEnsure ? (function() {
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return new Promise(function(resolve, reject) {
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__non_webpack_require__.ensure([], function() {
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try {
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let worker;
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if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('LIB')) {
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worker = __non_webpack_require__('../pdf.worker.js');
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} else {
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worker = __non_webpack_require__('./pdf.worker.js');
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}
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resolve(worker.WorkerMessageHandler);
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} catch (ex) {
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reject(ex);
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}
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}, reject, 'pdfjsWorker');
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});
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}) : dynamicLoaderSupported ? (function() {
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return new Promise(function(resolve, reject) {
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requirejs(['pdfjs-dist/build/pdf.worker'], function(worker) {
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try {
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resolve(worker.WorkerMessageHandler);
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} catch (ex) {
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reject(ex);
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}
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}, reject);
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});
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}) : null;
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if (!fallbackWorkerSrc && typeof document === 'object' &&
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'currentScript' in document) {
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const pdfjsFilePath = document.currentScript && document.currentScript.src;
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if (pdfjsFilePath) {
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fallbackWorkerSrc =
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pdfjsFilePath.replace(/(\.(?:min\.)?js)(\?.*)?$/i, '.worker$1$2');
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}
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}
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}
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/**
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* @typedef {function} IPDFStreamFactory
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* @param {DocumentInitParameters} params The document initialization
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* parameters. The "url" key is always present.
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* @returns {IPDFStream}
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*/
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/** @type IPDFStreamFactory */
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let createPDFNetworkStream;
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/**
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* Sets the function that instantiates a IPDFStream as an alternative PDF data
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* transport.
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* @param {IPDFStreamFactory} pdfNetworkStreamFactory - the factory function
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* that takes document initialization parameters (including a "url") and returns
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* an instance of IPDFStream.
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*/
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function setPDFNetworkStreamFactory(pdfNetworkStreamFactory) {
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createPDFNetworkStream = pdfNetworkStreamFactory;
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}
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/**
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* Document initialization / loading parameters object.
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*
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* @typedef {Object} DocumentInitParameters
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* @property {string} [url] - The URL of the PDF.
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* @property {TypedArray|Array|string} [data] - Binary PDF data. Use typed
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* arrays (Uint8Array) to improve the memory usage. If PDF data is
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* BASE64-encoded, use atob() to convert it to a binary string first.
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* @property {Object} [httpHeaders] - Basic authentication headers.
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* @property {boolean} [withCredentials] - Indicates whether or not
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* cross-site Access-Control requests should be made using credentials such
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* as cookies or authorization headers. The default is false.
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* @property {string} [password] - For decrypting password-protected PDFs.
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* @property {TypedArray} [initialData] - A typed array with the first portion
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* or all of the pdf data. Used by the extension since some data is already
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* loaded before the switch to range requests.
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* @property {number} [length] - The PDF file length. It's used for
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* progress reports and range requests operations.
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* @property {PDFDataRangeTransport} [range]
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* @property {number} [rangeChunkSize] - Specify maximum number of bytes
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* fetched per range request. The default value is 2^16 = 65536.
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* @property {PDFWorker} [worker] - The worker that will be used for
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* the loading and parsing of the PDF data.
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* @property {number} [verbosity] - Controls the logging level; the
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* constants from {VerbosityLevel} should be used.
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* @property {string} [docBaseUrl] - The base URL of the document,
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* used when attempting to recover valid absolute URLs for annotations, and
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* outline items, that (incorrectly) only specify relative URLs.
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* @property {string} [nativeImageDecoderSupport] - Strategy for
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* decoding certain (simple) JPEG images in the browser. This is useful for
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* environments without DOM image and canvas support, such as e.g. Node.js.
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* Valid values are 'decode', 'display' or 'none'; where 'decode' is intended
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* for browsers with full image/canvas support, 'display' for environments
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* with limited image support through stubs (useful for SVG conversion),
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* and 'none' where JPEG images will be decoded entirely by PDF.js.
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* The default value is 'decode'.
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* @property {string} [cMapUrl] - The URL where the predefined
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* Adobe CMaps are located. Include trailing slash.
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* @property {boolean} [cMapPacked] - Specifies if the Adobe CMaps are
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* binary packed.
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* @property {Object} [CMapReaderFactory] - The factory that will be
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* used when reading built-in CMap files. Providing a custom factory is useful
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* for environments without `XMLHttpRequest` support, such as e.g. Node.js.
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* The default value is {DOMCMapReaderFactory}.
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* @property {boolean} [stopAtErrors] - Reject certain promises, e.g.
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* `getOperatorList`, `getTextContent`, and `RenderTask`, when the associated
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* PDF data cannot be successfully parsed, instead of attempting to recover
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* whatever possible of the data. The default value is `false`.
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* @property {number} [maxImageSize] - The maximum allowed image size
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* in total pixels, i.e. width * height. Images above this value will not be
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* rendered. Use -1 for no limit, which is also the default value.
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* @property {boolean} [isEvalSupported] - Determines if we can eval
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* strings as JS. Primarily used to improve performance of font rendering,
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* and when parsing PDF functions. The default value is `true`.
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* @property {boolean} [disableFontFace] - By default fonts are
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* converted to OpenType fonts and loaded via font face rules. If disabled,
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* fonts will be rendered using a built-in font renderer that constructs the
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* glyphs with primitive path commands. The default value is `false`.
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* @property {boolean} [disableRange] - Disable range request loading
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* of PDF files. When enabled, and if the server supports partial content
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* requests, then the PDF will be fetched in chunks.
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* The default value is `false`.
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* @property {boolean} [disableStream] - Disable streaming of PDF file
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* data. By default PDF.js attempts to load PDFs in chunks.
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* The default value is `false`.
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* @property {boolean} [disableAutoFetch] - Disable pre-fetching of PDF
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* file data. When range requests are enabled PDF.js will automatically keep
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* fetching more data even if it isn't needed to display the current page.
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* The default value is `false`.
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* NOTE: It is also necessary to disable streaming, see above,
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* in order for disabling of pre-fetching to work correctly.
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* @property {boolean} [disableCreateObjectURL] - Disable the use of
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* `URL.createObjectURL`, for compatibility with older browsers.
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* The default value is `false`.
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* @property {boolean} [pdfBug] - Enables special hooks for debugging
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* PDF.js (see `web/debugger.js`). The default value is `false`.
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*/
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/**
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* @typedef {Object} PDFDocumentStats
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* @property {Object} streamTypes - Used stream types in the document (an item
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* is set to true if specific stream ID was used in the document).
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* @property {Object} fontTypes - Used font types in the document (an item
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* is set to true if specific font ID was used in the document).
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*/
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/**
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* This is the main entry point for loading a PDF and interacting with it.
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* NOTE: If a URL is used to fetch the PDF data a standard XMLHttpRequest(XHR)
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* is used, which means it must follow the same origin rules that any XHR does
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* e.g. No cross domain requests without CORS.
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*
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* @param {string|TypedArray|DocumentInitParameters|PDFDataRangeTransport} src
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* Can be a url to where a PDF is located, a typed array (Uint8Array)
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* already populated with data or parameter object.
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* @returns {PDFDocumentLoadingTask}
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*/
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function getDocument(src) {
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const task = new PDFDocumentLoadingTask();
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let source;
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if (typeof src === 'string') {
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source = { url: src, };
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} else if (isArrayBuffer(src)) {
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source = { data: src, };
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} else if (src instanceof PDFDataRangeTransport) {
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source = { range: src, };
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} else {
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if (typeof src !== 'object') {
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throw new Error('Invalid parameter in getDocument, ' +
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'need either Uint8Array, string or a parameter object');
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}
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if (!src.url && !src.data && !src.range) {
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throw new Error(
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'Invalid parameter object: need either .data, .range or .url');
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}
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source = src;
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}
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const params = Object.create(null);
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let rangeTransport = null, worker = null;
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for (const key in source) {
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if (key === 'url' && typeof window !== 'undefined') {
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// The full path is required in the 'url' field.
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params[key] = new URL(source[key], window.location).href;
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continue;
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} else if (key === 'range') {
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rangeTransport = source[key];
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continue;
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} else if (key === 'worker') {
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worker = source[key];
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continue;
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} else if (key === 'data' && !(source[key] instanceof Uint8Array)) {
|
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// Converting string or array-like data to Uint8Array.
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const pdfBytes = source[key];
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if (typeof pdfBytes === 'string') {
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params[key] = stringToBytes(pdfBytes);
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} else if (typeof pdfBytes === 'object' && pdfBytes !== null &&
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!isNaN(pdfBytes.length)) {
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params[key] = new Uint8Array(pdfBytes);
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} else if (isArrayBuffer(pdfBytes)) {
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params[key] = new Uint8Array(pdfBytes);
|
|
} else {
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throw new Error('Invalid PDF binary data: either typed array, ' +
|
|
'string or array-like object is expected in the ' +
|
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'data property.');
|
|
}
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continue;
|
|
}
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params[key] = source[key];
|
|
}
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|
|
|
params.rangeChunkSize = params.rangeChunkSize || DEFAULT_RANGE_CHUNK_SIZE;
|
|
params.CMapReaderFactory = params.CMapReaderFactory || DOMCMapReaderFactory;
|
|
params.ignoreErrors = params.stopAtErrors !== true;
|
|
params.pdfBug = params.pdfBug === true;
|
|
|
|
const NativeImageDecoderValues = Object.values(NativeImageDecoding);
|
|
if (params.nativeImageDecoderSupport === undefined ||
|
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!NativeImageDecoderValues.includes(params.nativeImageDecoderSupport)) {
|
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params.nativeImageDecoderSupport =
|
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(apiCompatibilityParams.nativeImageDecoderSupport ||
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NativeImageDecoding.DECODE);
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}
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if (!Number.isInteger(params.maxImageSize)) {
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params.maxImageSize = -1;
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}
|
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if (typeof params.isEvalSupported !== 'boolean') {
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params.isEvalSupported = true;
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}
|
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if (typeof params.disableFontFace !== 'boolean') {
|
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params.disableFontFace = apiCompatibilityParams.disableFontFace || false;
|
|
}
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|
|
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if (typeof params.disableRange !== 'boolean') {
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params.disableRange = false;
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}
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if (typeof params.disableStream !== 'boolean') {
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params.disableStream = false;
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}
|
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if (typeof params.disableAutoFetch !== 'boolean') {
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params.disableAutoFetch = false;
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}
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|
if (typeof params.disableCreateObjectURL !== 'boolean') {
|
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params.disableCreateObjectURL =
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apiCompatibilityParams.disableCreateObjectURL || false;
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}
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|
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// Set the main-thread verbosity level.
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setVerbosityLevel(params.verbosity);
|
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if (!worker) {
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const workerParams = {
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verbosity: params.verbosity,
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port: GlobalWorkerOptions.workerPort,
|
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};
|
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// Worker was not provided -- creating and owning our own. If message port
|
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// is specified in global worker options, using it.
|
|
worker = workerParams.port ? PDFWorker.fromPort(workerParams) :
|
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new PDFWorker(workerParams);
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task._worker = worker;
|
|
}
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const docId = task.docId;
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|
worker.promise.then(function() {
|
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if (task.destroyed) {
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throw new Error('Loading aborted');
|
|
}
|
|
return _fetchDocument(worker, params, rangeTransport, docId).then(
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function(workerId) {
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if (task.destroyed) {
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throw new Error('Loading aborted');
|
|
}
|
|
|
|
let networkStream;
|
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if (rangeTransport) {
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networkStream = new PDFDataTransportStream({
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length: params.length,
|
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initialData: params.initialData,
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progressiveDone: params.progressiveDone,
|
|
disableRange: params.disableRange,
|
|
disableStream: params.disableStream,
|
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}, rangeTransport);
|
|
} else if (!params.data) {
|
|
networkStream = createPDFNetworkStream({
|
|
url: params.url,
|
|
length: params.length,
|
|
httpHeaders: params.httpHeaders,
|
|
withCredentials: params.withCredentials,
|
|
rangeChunkSize: params.rangeChunkSize,
|
|
disableRange: params.disableRange,
|
|
disableStream: params.disableStream,
|
|
});
|
|
}
|
|
|
|
const messageHandler = new MessageHandler(docId, workerId, worker.port);
|
|
messageHandler.postMessageTransfers = worker.postMessageTransfers;
|
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const transport = new WorkerTransport(messageHandler, task, networkStream,
|
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params);
|
|
task._transport = transport;
|
|
messageHandler.send('Ready', null);
|
|
});
|
|
}).catch(task._capability.reject);
|
|
|
|
return task;
|
|
}
|
|
|
|
/**
|
|
* Starts fetching of specified PDF document/data.
|
|
* @param {PDFWorker} worker
|
|
* @param {Object} source
|
|
* @param {PDFDataRangeTransport} pdfDataRangeTransport
|
|
* @param {string} docId Unique document id, used as MessageHandler id.
|
|
* @returns {Promise} The promise, which is resolved when worker id of
|
|
* MessageHandler is known.
|
|
* @private
|
|
*/
|
|
function _fetchDocument(worker, source, pdfDataRangeTransport, docId) {
|
|
if (worker.destroyed) {
|
|
return Promise.reject(new Error('Worker was destroyed'));
|
|
}
|
|
|
|
if (pdfDataRangeTransport) {
|
|
source.length = pdfDataRangeTransport.length;
|
|
source.initialData = pdfDataRangeTransport.initialData;
|
|
source.progressiveDone = pdfDataRangeTransport.progressiveDone;
|
|
}
|
|
return worker.messageHandler.sendWithPromise('GetDocRequest', {
|
|
docId,
|
|
apiVersion: typeof PDFJSDev !== 'undefined' && !PDFJSDev.test('TESTING') ?
|
|
PDFJSDev.eval('BUNDLE_VERSION') : null,
|
|
source: { // Only send the required properties, and *not* the entire object.
|
|
data: source.data,
|
|
url: source.url,
|
|
password: source.password,
|
|
disableAutoFetch: source.disableAutoFetch,
|
|
rangeChunkSize: source.rangeChunkSize,
|
|
length: source.length,
|
|
},
|
|
maxImageSize: source.maxImageSize,
|
|
disableFontFace: source.disableFontFace,
|
|
disableCreateObjectURL: source.disableCreateObjectURL,
|
|
postMessageTransfers: worker.postMessageTransfers,
|
|
docBaseUrl: source.docBaseUrl,
|
|
nativeImageDecoderSupport: source.nativeImageDecoderSupport,
|
|
ignoreErrors: source.ignoreErrors,
|
|
isEvalSupported: source.isEvalSupported,
|
|
}).then(function(workerId) {
|
|
if (worker.destroyed) {
|
|
throw new Error('Worker was destroyed');
|
|
}
|
|
return workerId;
|
|
});
|
|
}
|
|
|
|
const PDFDocumentLoadingTask = (function PDFDocumentLoadingTaskClosure() {
|
|
let nextDocumentId = 0;
|
|
|
|
/**
|
|
* The loading task controls the operations required to load a PDF document
|
|
* (such as network requests) and provides a way to listen for completion,
|
|
* after which individual pages can be rendered.
|
|
*/
|
|
class PDFDocumentLoadingTask {
|
|
constructor() {
|
|
this._capability = createPromiseCapability();
|
|
this._transport = null;
|
|
this._worker = null;
|
|
|
|
/**
|
|
* Unique document loading task id -- used in MessageHandlers.
|
|
* @type {string}
|
|
*/
|
|
this.docId = 'd' + (nextDocumentId++);
|
|
|
|
/**
|
|
* Shows if loading task is destroyed.
|
|
* @type {boolean}
|
|
*/
|
|
this.destroyed = false;
|
|
|
|
/**
|
|
* Callback to request a password if wrong or no password was provided.
|
|
* The callback receives two parameters: function that needs to be called
|
|
* with new password and reason (see {PasswordResponses}).
|
|
*/
|
|
this.onPassword = null;
|
|
|
|
/**
|
|
* Callback to be able to monitor the loading progress of the PDF file
|
|
* (necessary to implement e.g. a loading bar). The callback receives
|
|
* an {Object} with the properties: {number} loaded and {number} total.
|
|
*/
|
|
this.onProgress = null;
|
|
|
|
/**
|
|
* Callback to when unsupported feature is used. The callback receives
|
|
* an {UNSUPPORTED_FEATURES} argument.
|
|
*/
|
|
this.onUnsupportedFeature = null;
|
|
}
|
|
|
|
/**
|
|
* Promise for document loading task completion.
|
|
* @type {Promise}
|
|
*/
|
|
get promise() {
|
|
return this._capability.promise;
|
|
}
|
|
|
|
/**
|
|
* Aborts all network requests and destroys worker.
|
|
* @returns {Promise} A promise that is resolved after destruction activity
|
|
* is completed.
|
|
*/
|
|
destroy() {
|
|
this.destroyed = true;
|
|
|
|
const transportDestroyed = !this._transport ? Promise.resolve() :
|
|
this._transport.destroy();
|
|
return transportDestroyed.then(() => {
|
|
this._transport = null;
|
|
if (this._worker) {
|
|
this._worker.destroy();
|
|
this._worker = null;
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Registers callbacks to indicate the document loading completion.
|
|
* @ignore
|
|
*/
|
|
then(onFulfilled, onRejected) {
|
|
throw new Error('Removed API method: ' +
|
|
'PDFDocumentLoadingTask.then, use the `promise` getter instead.');
|
|
}
|
|
}
|
|
return PDFDocumentLoadingTask;
|
|
})();
|
|
|
|
/**
|
|
* Abstract class to support range requests file loading.
|
|
* @param {number} length
|
|
* @param {Uint8Array} initialData
|
|
* @param {boolean} progressiveDone
|
|
*/
|
|
class PDFDataRangeTransport {
|
|
constructor(length, initialData, progressiveDone = false) {
|
|
this.length = length;
|
|
this.initialData = initialData;
|
|
this.progressiveDone = progressiveDone;
|
|
|
|
this._rangeListeners = [];
|
|
this._progressListeners = [];
|
|
this._progressiveReadListeners = [];
|
|
this._progressiveDoneListeners = [];
|
|
this._readyCapability = createPromiseCapability();
|
|
}
|
|
|
|
addRangeListener(listener) {
|
|
this._rangeListeners.push(listener);
|
|
}
|
|
|
|
addProgressListener(listener) {
|
|
this._progressListeners.push(listener);
|
|
}
|
|
|
|
addProgressiveReadListener(listener) {
|
|
this._progressiveReadListeners.push(listener);
|
|
}
|
|
|
|
addProgressiveDoneListener(listener) {
|
|
this._progressiveDoneListeners.push(listener);
|
|
}
|
|
|
|
onDataRange(begin, chunk) {
|
|
for (const listener of this._rangeListeners) {
|
|
listener(begin, chunk);
|
|
}
|
|
}
|
|
|
|
onDataProgress(loaded, total) {
|
|
this._readyCapability.promise.then(() => {
|
|
for (const listener of this._progressListeners) {
|
|
listener(loaded, total);
|
|
}
|
|
});
|
|
}
|
|
|
|
onDataProgressiveRead(chunk) {
|
|
this._readyCapability.promise.then(() => {
|
|
for (const listener of this._progressiveReadListeners) {
|
|
listener(chunk);
|
|
}
|
|
});
|
|
}
|
|
|
|
onDataProgressiveDone() {
|
|
this._readyCapability.promise.then(() => {
|
|
for (const listener of this._progressiveDoneListeners) {
|
|
listener();
|
|
}
|
|
});
|
|
}
|
|
|
|
transportReady() {
|
|
this._readyCapability.resolve();
|
|
}
|
|
|
|
requestDataRange(begin, end) {
|
|
unreachable('Abstract method PDFDataRangeTransport.requestDataRange');
|
|
}
|
|
|
|
abort() {}
|
|
}
|
|
|
|
/**
|
|
* Proxy to a PDFDocument in the worker thread. Also, contains commonly used
|
|
* properties that can be read synchronously.
|
|
*/
|
|
class PDFDocumentProxy {
|
|
constructor(pdfInfo, transport) {
|
|
this._pdfInfo = pdfInfo;
|
|
this._transport = transport;
|
|
}
|
|
|
|
/**
|
|
* @type {number} Total number of pages the PDF contains.
|
|
*/
|
|
get numPages() {
|
|
return this._pdfInfo.numPages;
|
|
}
|
|
|
|
/**
|
|
* @type {string} A (not guaranteed to be) unique ID to identify a PDF.
|
|
*/
|
|
get fingerprint() {
|
|
return this._pdfInfo.fingerprint;
|
|
}
|
|
|
|
/**
|
|
* @param {number} pageNumber - The page number to get. The first page is 1.
|
|
* @returns {Promise} A promise that is resolved with a {@link PDFPageProxy}
|
|
* object.
|
|
*/
|
|
getPage(pageNumber) {
|
|
return this._transport.getPage(pageNumber);
|
|
}
|
|
|
|
/**
|
|
* @param {{num: number, gen: number}} ref - The page reference. Must have
|
|
* the `num` and `gen` properties.
|
|
* @returns {Promise} A promise that is resolved with the page index that is
|
|
* associated with the reference.
|
|
*/
|
|
getPageIndex(ref) {
|
|
return this._transport.getPageIndex(ref);
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with a lookup table for
|
|
* mapping named destinations to reference numbers.
|
|
*
|
|
* This can be slow for large documents. Use `getDestination` instead.
|
|
*/
|
|
getDestinations() {
|
|
return this._transport.getDestinations();
|
|
}
|
|
|
|
/**
|
|
* @param {string} id - The named destination to get.
|
|
* @returns {Promise} A promise that is resolved with all information
|
|
* of the given named destination.
|
|
*/
|
|
getDestination(id) {
|
|
return this._transport.getDestination(id);
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with an {Array} containing
|
|
* the page labels that correspond to the page indexes, or `null` when
|
|
* no page labels are present in the PDF file.
|
|
*/
|
|
getPageLabels() {
|
|
return this._transport.getPageLabels();
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with a {string} containing
|
|
* the page layout name.
|
|
*/
|
|
getPageLayout() {
|
|
return this._transport.getPageLayout();
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with a {string} containing
|
|
* the page mode name.
|
|
*/
|
|
getPageMode() {
|
|
return this._transport.getPageMode();
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with an {Object} containing
|
|
* the viewer preferences.
|
|
*/
|
|
getViewerPreferences() {
|
|
return this._transport.getViewerPreferences();
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with an {Array} containing
|
|
* the destination, or `null` when no open action is present in the PDF.
|
|
*/
|
|
getOpenActionDestination() {
|
|
return this._transport.getOpenActionDestination();
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with a lookup table for
|
|
* mapping named attachments to their content.
|
|
*/
|
|
getAttachments() {
|
|
return this._transport.getAttachments();
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with an {Array} of all the
|
|
* JavaScript strings in the name tree, or `null` if no JavaScript exists.
|
|
*/
|
|
getJavaScript() {
|
|
return this._transport.getJavaScript();
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with an {Array} that is a
|
|
* tree outline (if it has one) of the PDF. The tree is in the format of:
|
|
* [
|
|
* {
|
|
* title: string,
|
|
* bold: boolean,
|
|
* italic: boolean,
|
|
* color: rgb Uint8ClampedArray,
|
|
* count: integer or undefined,
|
|
* dest: dest obj,
|
|
* url: string,
|
|
* items: array of more items like this
|
|
* },
|
|
* ...
|
|
* ]
|
|
*/
|
|
getOutline() {
|
|
return this._transport.getOutline();
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with an {Array} that contains
|
|
* the permission flags for the PDF document, or `null` when
|
|
* no permissions are present in the PDF file.
|
|
*/
|
|
getPermissions() {
|
|
return this._transport.getPermissions();
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with an {Object} that has
|
|
* `info` and `metadata` properties. `info` is an {Object} filled with
|
|
* anything available in the information dictionary and similarly
|
|
* `metadata` is a {Metadata} object with information from the metadata
|
|
* section of the PDF.
|
|
*/
|
|
getMetadata() {
|
|
return this._transport.getMetadata();
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved with a {TypedArray} that has
|
|
* the raw data from the PDF.
|
|
*/
|
|
getData() {
|
|
return this._transport.getData();
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise that is resolved when the document's data
|
|
* is loaded. It is resolved with an {Object} that contains the `length`
|
|
* property that indicates size of the PDF data in bytes.
|
|
*/
|
|
getDownloadInfo() {
|
|
return this._transport.downloadInfoCapability.promise;
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise this is resolved with current statistics about
|
|
* document structures (see {@link PDFDocumentStats}).
|
|
*/
|
|
getStats() {
|
|
return this._transport.getStats();
|
|
}
|
|
|
|
/**
|
|
* Cleans up resources allocated by the document, e.g. created `@font-face`.
|
|
*/
|
|
cleanup() {
|
|
this._transport.startCleanup();
|
|
}
|
|
|
|
/**
|
|
* Destroys the current document instance and terminates the worker.
|
|
*/
|
|
destroy() {
|
|
return this.loadingTask.destroy();
|
|
}
|
|
|
|
/**
|
|
* @type {Object} A subset of the current {DocumentInitParameters}, which are
|
|
* either needed in the viewer and/or whose default values may be affected
|
|
* by the `apiCompatibilityParams`.
|
|
*/
|
|
get loadingParams() {
|
|
return this._transport.loadingParams;
|
|
}
|
|
|
|
/**
|
|
* @type {PDFDocumentLoadingTask} The loadingTask for the current document.
|
|
*/
|
|
get loadingTask() {
|
|
return this._transport.loadingTask;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Page getViewport parameters.
|
|
*
|
|
* @typedef {Object} GetViewportParameters
|
|
* @property {number} scale - The desired scale of the viewport.
|
|
* @property {number} [rotation] - The desired rotation, in degrees, of
|
|
* the viewport. If omitted it defaults to the page rotation.
|
|
* @property {number} [offsetX] - The horizontal, i.e. x-axis, offset.
|
|
* The default value is `0`.
|
|
* @property {number} [offsetY] - The vertical, i.e. y-axis, offset.
|
|
* The default value is `0`.
|
|
* @property {boolean} [dontFlip] - If true, the y-axis will not be
|
|
* flipped. The default value is `false`.
|
|
*/
|
|
|
|
/**
|
|
* Page getTextContent parameters.
|
|
*
|
|
* @typedef {Object} getTextContentParameters
|
|
* @property {boolean} normalizeWhitespace - replaces all occurrences of
|
|
* whitespace with standard spaces (0x20). The default value is `false`.
|
|
* @property {boolean} disableCombineTextItems - do not attempt to combine
|
|
* same line {@link TextItem}'s. The default value is `false`.
|
|
*/
|
|
|
|
/**
|
|
* Page text content.
|
|
*
|
|
* @typedef {Object} TextContent
|
|
* @property {array} items - array of {@link TextItem}
|
|
* @property {Object} styles - {@link TextStyle} objects, indexed by font name.
|
|
*/
|
|
|
|
/**
|
|
* Page text content part.
|
|
*
|
|
* @typedef {Object} TextItem
|
|
* @property {string} str - text content.
|
|
* @property {string} dir - text direction: 'ttb', 'ltr' or 'rtl'.
|
|
* @property {array} transform - transformation matrix.
|
|
* @property {number} width - width in device space.
|
|
* @property {number} height - height in device space.
|
|
* @property {string} fontName - font name used by pdf.js for converted font.
|
|
*/
|
|
|
|
/**
|
|
* Text style.
|
|
*
|
|
* @typedef {Object} TextStyle
|
|
* @property {number} ascent - font ascent.
|
|
* @property {number} descent - font descent.
|
|
* @property {boolean} vertical - text is in vertical mode.
|
|
* @property {string} fontFamily - possible font family
|
|
*/
|
|
|
|
/**
|
|
* Page annotation parameters.
|
|
*
|
|
* @typedef {Object} GetAnnotationsParameters
|
|
* @property {string} intent - Determines the annotations that will be fetched,
|
|
* can be either 'display' (viewable annotations) or 'print'
|
|
* (printable annotations).
|
|
* If the parameter is omitted, all annotations are fetched.
|
|
*/
|
|
|
|
/**
|
|
* Page render parameters.
|
|
*
|
|
* @typedef {Object} RenderParameters
|
|
* @property {Object} canvasContext - A 2D context of a DOM Canvas object.
|
|
* @property {PageViewport} viewport - Rendering viewport obtained by
|
|
* calling the `PDFPageProxy.getViewport` method.
|
|
* @property {string} [intent] - Rendering intent, can be 'display' or 'print'
|
|
* (default value is 'display').
|
|
* @property {boolean} [enableWebGL] - Enables WebGL accelerated rendering
|
|
* for some operations. The default value is `false`.
|
|
* @property {boolean} [renderInteractiveForms] - Whether or not
|
|
* interactive form elements are rendered in the display
|
|
* layer. If so, we do not render them on canvas as well.
|
|
* @property {Array} [transform] - Additional transform, applied
|
|
* just before viewport transform.
|
|
* @property {Object} [imageLayer] - An object that has beginLayout,
|
|
* endLayout and appendImage functions.
|
|
* @property {Object} [canvasFactory] - The factory that will be used
|
|
* when creating canvases. The default value is
|
|
* {DOMCanvasFactory}.
|
|
* @property {Object} [background] - Background to use for the canvas.
|
|
* Can use any valid canvas.fillStyle: A DOMString parsed as
|
|
* CSS <color> value, a CanvasGradient object (a linear or
|
|
* radial gradient) or a CanvasPattern object (a repetitive
|
|
* image). The default value is 'rgb(255,255,255)'.
|
|
*/
|
|
|
|
/**
|
|
* PDF page operator list.
|
|
*
|
|
* @typedef {Object} PDFOperatorList
|
|
* @property {Array} fnArray - Array containing the operator functions.
|
|
* @property {Array} argsArray - Array containing the arguments of the
|
|
* functions.
|
|
*/
|
|
|
|
/**
|
|
* Proxy to a PDFPage in the worker thread.
|
|
* @alias PDFPageProxy
|
|
*/
|
|
class PDFPageProxy {
|
|
constructor(pageIndex, pageInfo, transport, pdfBug = false) {
|
|
this.pageIndex = pageIndex;
|
|
this._pageInfo = pageInfo;
|
|
this._transport = transport;
|
|
this._stats = (pdfBug ? new StatTimer() : null);
|
|
this._pdfBug = pdfBug;
|
|
this.commonObjs = transport.commonObjs;
|
|
this.objs = new PDFObjects();
|
|
|
|
this.cleanupAfterRender = false;
|
|
this.pendingCleanup = false;
|
|
this.intentStates = Object.create(null);
|
|
this.destroyed = false;
|
|
}
|
|
|
|
/**
|
|
* @type {number} Page number of the page. First page is 1.
|
|
*/
|
|
get pageNumber() {
|
|
return this.pageIndex + 1;
|
|
}
|
|
|
|
/**
|
|
* @type {number} The number of degrees the page is rotated clockwise.
|
|
*/
|
|
get rotate() {
|
|
return this._pageInfo.rotate;
|
|
}
|
|
|
|
/**
|
|
* @type {Object} The reference that points to this page. It has `num` and
|
|
* `gen` properties.
|
|
*/
|
|
get ref() {
|
|
return this._pageInfo.ref;
|
|
}
|
|
|
|
/**
|
|
* @type {number} The default size of units in 1/72nds of an inch.
|
|
*/
|
|
get userUnit() {
|
|
return this._pageInfo.userUnit;
|
|
}
|
|
|
|
/**
|
|
* @type {Array} An array of the visible portion of the PDF page in user
|
|
* space units [x1, y1, x2, y2].
|
|
*/
|
|
get view() {
|
|
return this._pageInfo.view;
|
|
}
|
|
|
|
/**
|
|
* @param {GetViewportParameters} params - Viewport parameters.
|
|
* @returns {PageViewport} Contains 'width' and 'height' properties
|
|
* along with transforms required for rendering.
|
|
*/
|
|
getViewport({ scale, rotation = this.rotate,
|
|
offsetX = 0, offsetY = 0, dontFlip = false, } = {}) {
|
|
if ((typeof PDFJSDev !== 'undefined' && PDFJSDev.test('GENERIC')) &&
|
|
(arguments.length > 1 || typeof arguments[0] === 'number')) {
|
|
throw new Error(
|
|
'PDFPageProxy.getViewport is called with obsolete arguments.');
|
|
}
|
|
return new PageViewport({
|
|
viewBox: this.view,
|
|
scale,
|
|
rotation,
|
|
offsetX,
|
|
offsetY,
|
|
dontFlip,
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @param {GetAnnotationsParameters} params - Annotation parameters.
|
|
* @returns {Promise} A promise that is resolved with an {Array} of the
|
|
* annotation objects.
|
|
*/
|
|
getAnnotations({ intent = null, } = {}) {
|
|
if (!this.annotationsPromise || this.annotationsIntent !== intent) {
|
|
this.annotationsPromise = this._transport.getAnnotations(this.pageIndex,
|
|
intent);
|
|
this.annotationsIntent = intent;
|
|
}
|
|
return this.annotationsPromise;
|
|
}
|
|
|
|
/**
|
|
* Begins the process of rendering a page to the desired context.
|
|
* @param {RenderParameters} params Page render parameters.
|
|
* @returns {RenderTask} An object that contains the promise, which
|
|
* is resolved when the page finishes rendering.
|
|
*/
|
|
render({ canvasContext, viewport, intent = 'display', enableWebGL = false,
|
|
renderInteractiveForms = false, transform = null, imageLayer = null,
|
|
canvasFactory = null, background = null, }) {
|
|
if (this._stats) {
|
|
this._stats.time('Overall');
|
|
}
|
|
|
|
const renderingIntent = (intent === 'print' ? 'print' : 'display');
|
|
// If there was a pending destroy, cancel it so no cleanup happens during
|
|
// this call to render.
|
|
this.pendingCleanup = false;
|
|
|
|
if (!this.intentStates[renderingIntent]) {
|
|
this.intentStates[renderingIntent] = Object.create(null);
|
|
}
|
|
const intentState = this.intentStates[renderingIntent];
|
|
|
|
// Ensure that a pending `streamReader` cancel timeout is always aborted.
|
|
if (intentState.streamReaderCancelTimeout) {
|
|
clearTimeout(intentState.streamReaderCancelTimeout);
|
|
intentState.streamReaderCancelTimeout = null;
|
|
}
|
|
|
|
const canvasFactoryInstance = canvasFactory || new DOMCanvasFactory();
|
|
const webGLContext = new WebGLContext({
|
|
enable: enableWebGL,
|
|
});
|
|
|
|
// If there's no displayReadyCapability yet, then the operatorList
|
|
// was never requested before. Make the request and create the promise.
|
|
if (!intentState.displayReadyCapability) {
|
|
intentState.displayReadyCapability = createPromiseCapability();
|
|
intentState.operatorList = {
|
|
fnArray: [],
|
|
argsArray: [],
|
|
lastChunk: false,
|
|
};
|
|
|
|
if (this._stats) {
|
|
this._stats.time('Page Request');
|
|
}
|
|
this._pumpOperatorList({
|
|
pageIndex: this.pageNumber - 1,
|
|
intent: renderingIntent,
|
|
renderInteractiveForms: renderInteractiveForms === true,
|
|
});
|
|
}
|
|
|
|
const complete = (error) => {
|
|
const i = intentState.renderTasks.indexOf(internalRenderTask);
|
|
if (i >= 0) {
|
|
intentState.renderTasks.splice(i, 1);
|
|
}
|
|
|
|
// Attempt to reduce memory usage during *printing*, by always running
|
|
// cleanup once rendering has finished (regardless of cleanupAfterRender).
|
|
if (this.cleanupAfterRender || renderingIntent === 'print') {
|
|
this.pendingCleanup = true;
|
|
}
|
|
this._tryCleanup();
|
|
|
|
if (error) {
|
|
internalRenderTask.capability.reject(error);
|
|
|
|
this._abortOperatorList({
|
|
intentState,
|
|
reason: error,
|
|
});
|
|
} else {
|
|
internalRenderTask.capability.resolve();
|
|
}
|
|
if (this._stats) {
|
|
this._stats.timeEnd('Rendering');
|
|
this._stats.timeEnd('Overall');
|
|
}
|
|
};
|
|
|
|
const internalRenderTask = new InternalRenderTask({
|
|
callback: complete,
|
|
params: { // Include the required properties, and *not* the entire object.
|
|
canvasContext,
|
|
viewport,
|
|
transform,
|
|
imageLayer,
|
|
background,
|
|
},
|
|
objs: this.objs,
|
|
commonObjs: this.commonObjs,
|
|
operatorList: intentState.operatorList,
|
|
pageNumber: this.pageNumber,
|
|
canvasFactory: canvasFactoryInstance,
|
|
webGLContext,
|
|
useRequestAnimationFrame: renderingIntent !== 'print',
|
|
pdfBug: this._pdfBug,
|
|
});
|
|
|
|
if (!intentState.renderTasks) {
|
|
intentState.renderTasks = [];
|
|
}
|
|
intentState.renderTasks.push(internalRenderTask);
|
|
const renderTask = internalRenderTask.task;
|
|
|
|
intentState.displayReadyCapability.promise.then((transparency) => {
|
|
if (this.pendingCleanup) {
|
|
complete();
|
|
return;
|
|
}
|
|
if (this._stats) {
|
|
this._stats.time('Rendering');
|
|
}
|
|
internalRenderTask.initializeGraphics(transparency);
|
|
internalRenderTask.operatorListChanged();
|
|
}).catch(complete);
|
|
|
|
return renderTask;
|
|
}
|
|
|
|
/**
|
|
* @returns {Promise} A promise resolved with an {@link PDFOperatorList}
|
|
* object that represents page's operator list.
|
|
*/
|
|
getOperatorList() {
|
|
function operatorListChanged() {
|
|
if (intentState.operatorList.lastChunk) {
|
|
intentState.opListReadCapability.resolve(intentState.operatorList);
|
|
|
|
const i = intentState.renderTasks.indexOf(opListTask);
|
|
if (i >= 0) {
|
|
intentState.renderTasks.splice(i, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
const renderingIntent = 'oplist';
|
|
if (!this.intentStates[renderingIntent]) {
|
|
this.intentStates[renderingIntent] = Object.create(null);
|
|
}
|
|
const intentState = this.intentStates[renderingIntent];
|
|
let opListTask;
|
|
|
|
if (!intentState.opListReadCapability) {
|
|
opListTask = {};
|
|
opListTask.operatorListChanged = operatorListChanged;
|
|
intentState.opListReadCapability = createPromiseCapability();
|
|
intentState.renderTasks = [];
|
|
intentState.renderTasks.push(opListTask);
|
|
intentState.operatorList = {
|
|
fnArray: [],
|
|
argsArray: [],
|
|
lastChunk: false,
|
|
};
|
|
|
|
if (this._stats) {
|
|
this._stats.time('Page Request');
|
|
}
|
|
this._pumpOperatorList({
|
|
pageIndex: this.pageIndex,
|
|
intent: renderingIntent,
|
|
});
|
|
}
|
|
return intentState.opListReadCapability.promise;
|
|
}
|
|
|
|
/**
|
|
* @param {getTextContentParameters} params - getTextContent parameters.
|
|
* @returns {ReadableStream} ReadableStream to read textContent chunks.
|
|
*/
|
|
streamTextContent({ normalizeWhitespace = false,
|
|
disableCombineTextItems = false, } = {}) {
|
|
const TEXT_CONTENT_CHUNK_SIZE = 100;
|
|
|
|
return this._transport.messageHandler.sendWithStream('GetTextContent', {
|
|
pageIndex: this.pageNumber - 1,
|
|
normalizeWhitespace: normalizeWhitespace === true,
|
|
combineTextItems: disableCombineTextItems !== true,
|
|
}, {
|
|
highWaterMark: TEXT_CONTENT_CHUNK_SIZE,
|
|
size(textContent) {
|
|
return textContent.items.length;
|
|
},
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @param {getTextContentParameters} params - getTextContent parameters.
|
|
* @returns {Promise} That is resolved a {@link TextContent}
|
|
* object that represent the page text content.
|
|
*/
|
|
getTextContent(params = {}) {
|
|
const readableStream = this.streamTextContent(params);
|
|
|
|
return new Promise(function(resolve, reject) {
|
|
function pump() {
|
|
reader.read().then(function({ value, done, }) {
|
|
if (done) {
|
|
resolve(textContent);
|
|
return;
|
|
}
|
|
Object.assign(textContent.styles, value.styles);
|
|
textContent.items.push(...value.items);
|
|
pump();
|
|
}, reject);
|
|
}
|
|
|
|
const reader = readableStream.getReader();
|
|
const textContent = {
|
|
items: [],
|
|
styles: Object.create(null),
|
|
};
|
|
pump();
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Destroys the page object.
|
|
* @private
|
|
*/
|
|
_destroy() {
|
|
this.destroyed = true;
|
|
this._transport.pageCache[this.pageIndex] = null;
|
|
|
|
const waitOn = [];
|
|
Object.keys(this.intentStates).forEach((intent) => {
|
|
const intentState = this.intentStates[intent];
|
|
this._abortOperatorList({
|
|
intentState,
|
|
reason: new Error('Page was destroyed.'),
|
|
force: true,
|
|
});
|
|
|
|
if (intent === 'oplist') {
|
|
// Avoid errors below, since the renderTasks are just stubs.
|
|
return;
|
|
}
|
|
intentState.renderTasks.forEach(function(renderTask) {
|
|
const renderCompleted = renderTask.capability.promise.
|
|
catch(function() {}); // ignoring failures
|
|
waitOn.push(renderCompleted);
|
|
renderTask.cancel();
|
|
});
|
|
});
|
|
this.objs.clear();
|
|
this.annotationsPromise = null;
|
|
this.pendingCleanup = false;
|
|
return Promise.all(waitOn);
|
|
}
|
|
|
|
/**
|
|
* Cleans up resources allocated by the page.
|
|
* @param {boolean} [resetStats] - Reset page stats, if enabled.
|
|
* The default value is `false`.
|
|
*/
|
|
cleanup(resetStats = false) {
|
|
this.pendingCleanup = true;
|
|
this._tryCleanup(resetStats);
|
|
}
|
|
|
|
/**
|
|
* Attempts to clean up if rendering is in a state where that's possible.
|
|
* @private
|
|
*/
|
|
_tryCleanup(resetStats = false) {
|
|
if (!this.pendingCleanup ||
|
|
Object.keys(this.intentStates).some((intent) => {
|
|
const intentState = this.intentStates[intent];
|
|
return (intentState.renderTasks.length !== 0 ||
|
|
!intentState.operatorList.lastChunk);
|
|
})) {
|
|
return;
|
|
}
|
|
|
|
Object.keys(this.intentStates).forEach((intent) => {
|
|
delete this.intentStates[intent];
|
|
});
|
|
this.objs.clear();
|
|
this.annotationsPromise = null;
|
|
if (resetStats && this._stats) {
|
|
this._stats = new StatTimer();
|
|
}
|
|
this.pendingCleanup = false;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_startRenderPage(transparency, intent) {
|
|
const intentState = this.intentStates[intent];
|
|
if (!intentState) {
|
|
return; // Rendering was cancelled.
|
|
}
|
|
if (this._stats) {
|
|
this._stats.timeEnd('Page Request');
|
|
}
|
|
// TODO Refactor RenderPageRequest to separate rendering
|
|
// and operator list logic
|
|
if (intentState.displayReadyCapability) {
|
|
intentState.displayReadyCapability.resolve(transparency);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_renderPageChunk(operatorListChunk, intentState) {
|
|
// Add the new chunk to the current operator list.
|
|
for (let i = 0, ii = operatorListChunk.length; i < ii; i++) {
|
|
intentState.operatorList.fnArray.push(operatorListChunk.fnArray[i]);
|
|
intentState.operatorList.argsArray.push(
|
|
operatorListChunk.argsArray[i]);
|
|
}
|
|
intentState.operatorList.lastChunk = operatorListChunk.lastChunk;
|
|
|
|
// Notify all the rendering tasks there are more operators to be consumed.
|
|
for (let i = 0; i < intentState.renderTasks.length; i++) {
|
|
intentState.renderTasks[i].operatorListChanged();
|
|
}
|
|
|
|
if (operatorListChunk.lastChunk) {
|
|
this._tryCleanup();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_pumpOperatorList(args) {
|
|
assert(args.intent,
|
|
'PDFPageProxy._pumpOperatorList: Expected "intent" argument.');
|
|
|
|
const readableStream =
|
|
this._transport.messageHandler.sendWithStream('GetOperatorList', args);
|
|
const reader = readableStream.getReader();
|
|
|
|
const intentState = this.intentStates[args.intent];
|
|
intentState.streamReader = reader;
|
|
|
|
const pump = () => {
|
|
reader.read().then(({ value, done, }) => {
|
|
if (done) {
|
|
intentState.streamReader = null;
|
|
return;
|
|
}
|
|
if (this._transport.destroyed) {
|
|
return; // Ignore any pending requests if the worker was terminated.
|
|
}
|
|
this._renderPageChunk(value, intentState);
|
|
pump();
|
|
}, (reason) => {
|
|
intentState.streamReader = null;
|
|
|
|
if (this._transport.destroyed) {
|
|
return; // Ignore any pending requests if the worker was terminated.
|
|
}
|
|
if (intentState.operatorList) {
|
|
// Mark operator list as complete.
|
|
intentState.operatorList.lastChunk = true;
|
|
|
|
for (let i = 0; i < intentState.renderTasks.length; i++) {
|
|
intentState.renderTasks[i].operatorListChanged();
|
|
}
|
|
this._tryCleanup();
|
|
}
|
|
|
|
if (intentState.displayReadyCapability) {
|
|
intentState.displayReadyCapability.reject(reason);
|
|
} else if (intentState.opListReadCapability) {
|
|
intentState.opListReadCapability.reject(reason);
|
|
} else {
|
|
throw reason;
|
|
}
|
|
});
|
|
};
|
|
pump();
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_abortOperatorList({ intentState, reason, force = false, }) {
|
|
assert(reason instanceof Error ||
|
|
(typeof reason === 'object' && reason !== null),
|
|
'PDFPageProxy._abortOperatorList: Expected "reason" argument.');
|
|
|
|
if (!intentState.streamReader) {
|
|
return;
|
|
}
|
|
if (!force) {
|
|
// Ensure that an Error occurring in *only* one `InternalRenderTask`, e.g.
|
|
// multiple render() calls on the same canvas, won't break all rendering.
|
|
if (intentState.renderTasks.length !== 0) {
|
|
return;
|
|
}
|
|
// Don't immediately abort parsing on the worker-thread when rendering is
|
|
// cancelled, since that will unnecessarily delay re-rendering when (for
|
|
// partially parsed pages) e.g. zooming/rotation occurs in the viewer.
|
|
if (reason instanceof RenderingCancelledException) {
|
|
intentState.streamReaderCancelTimeout = setTimeout(() => {
|
|
this._abortOperatorList({ intentState, reason, force: true, });
|
|
intentState.streamReaderCancelTimeout = null;
|
|
}, RENDERING_CANCELLED_TIMEOUT);
|
|
return;
|
|
}
|
|
}
|
|
intentState.streamReader.cancel(
|
|
new AbortException(reason && reason.message));
|
|
intentState.streamReader = null;
|
|
|
|
if (this._transport.destroyed) {
|
|
return; // Ignore any pending requests if the worker was terminated.
|
|
}
|
|
// Remove the current `intentState`, since a cancelled `getOperatorList`
|
|
// call on the worker-thread cannot be re-started...
|
|
Object.keys(this.intentStates).some((intent) => {
|
|
if (this.intentStates[intent] === intentState) {
|
|
delete this.intentStates[intent];
|
|
return true;
|
|
}
|
|
return false;
|
|
});
|
|
// ... and force clean-up to ensure that any old state is always removed.
|
|
this.cleanup();
|
|
}
|
|
|
|
/**
|
|
* @type {Object} Returns page stats, if enabled; returns `null` otherwise.
|
|
*/
|
|
get stats() {
|
|
return this._stats;
|
|
}
|
|
}
|
|
|
|
class LoopbackPort {
|
|
constructor(defer = true) {
|
|
this._listeners = [];
|
|
this._defer = defer;
|
|
this._deferred = Promise.resolve(undefined);
|
|
}
|
|
|
|
postMessage(obj, transfers) {
|
|
function cloneValue(value) {
|
|
// Trying to perform a structured clone close to the spec, including
|
|
// transfers.
|
|
if (typeof value !== 'object' || value === null) {
|
|
return value;
|
|
}
|
|
if (cloned.has(value)) { // already cloned the object
|
|
return cloned.get(value);
|
|
}
|
|
let buffer, result;
|
|
if ((buffer = value.buffer) && isArrayBuffer(buffer)) {
|
|
// We found object with ArrayBuffer (typed array).
|
|
const transferable = transfers && transfers.includes(buffer);
|
|
if (value === buffer) {
|
|
// Special case when we are faking typed arrays in compatibility.js.
|
|
result = value;
|
|
} else if (transferable) {
|
|
result = new value.constructor(buffer, value.byteOffset,
|
|
value.byteLength);
|
|
} else {
|
|
result = new value.constructor(value);
|
|
}
|
|
cloned.set(value, result);
|
|
return result;
|
|
}
|
|
result = Array.isArray(value) ? [] : {};
|
|
cloned.set(value, result); // adding to cache now for cyclic references
|
|
// Cloning all value and object properties, however ignoring properties
|
|
// defined via getter.
|
|
for (const i in value) {
|
|
let desc, p = value;
|
|
while (!(desc = Object.getOwnPropertyDescriptor(p, i))) {
|
|
p = Object.getPrototypeOf(p);
|
|
}
|
|
if (typeof desc.value === 'undefined') {
|
|
continue;
|
|
}
|
|
if (typeof desc.value === 'function') {
|
|
if (value.hasOwnProperty && value.hasOwnProperty(i)) {
|
|
throw new Error(
|
|
`LoopbackPort.postMessage - cannot clone: ${value[i]}`);
|
|
}
|
|
continue;
|
|
}
|
|
result[i] = cloneValue(desc.value);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
if (!this._defer) {
|
|
this._listeners.forEach((listener) => {
|
|
listener.call(this, { data: obj, });
|
|
});
|
|
return;
|
|
}
|
|
|
|
const cloned = new WeakMap();
|
|
const e = { data: cloneValue(obj), };
|
|
this._deferred.then(() => {
|
|
this._listeners.forEach((listener) => {
|
|
listener.call(this, e);
|
|
});
|
|
});
|
|
}
|
|
|
|
addEventListener(name, listener) {
|
|
this._listeners.push(listener);
|
|
}
|
|
|
|
removeEventListener(name, listener) {
|
|
const i = this._listeners.indexOf(listener);
|
|
this._listeners.splice(i, 1);
|
|
}
|
|
|
|
terminate() {
|
|
this._listeners.length = 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @typedef {Object} PDFWorkerParameters
|
|
* @property {string} [name] - The name of the worker.
|
|
* @property {Object} [port] - The `workerPort`.
|
|
* @property {number} [verbosity] - Controls the logging level; the
|
|
* constants from {VerbosityLevel} should be used.
|
|
*/
|
|
|
|
const PDFWorker = (function PDFWorkerClosure() {
|
|
const pdfWorkerPorts = new WeakMap();
|
|
let nextFakeWorkerId = 0;
|
|
let fakeWorkerFilesLoadedCapability;
|
|
|
|
function getWorkerSrc() {
|
|
if (GlobalWorkerOptions.workerSrc) {
|
|
return GlobalWorkerOptions.workerSrc;
|
|
}
|
|
if (typeof fallbackWorkerSrc !== 'undefined') {
|
|
return fallbackWorkerSrc;
|
|
}
|
|
throw new Error('No "GlobalWorkerOptions.workerSrc" specified.');
|
|
}
|
|
|
|
function getMainThreadWorkerMessageHandler() {
|
|
try {
|
|
if (typeof window !== 'undefined') {
|
|
return (window.pdfjsWorker && window.pdfjsWorker.WorkerMessageHandler);
|
|
}
|
|
} catch (ex) { }
|
|
return null;
|
|
}
|
|
|
|
// Loads worker code into main thread.
|
|
function setupFakeWorkerGlobal() {
|
|
if (fakeWorkerFilesLoadedCapability) {
|
|
return fakeWorkerFilesLoadedCapability.promise;
|
|
}
|
|
fakeWorkerFilesLoadedCapability = createPromiseCapability();
|
|
|
|
const mainWorkerMessageHandler = getMainThreadWorkerMessageHandler();
|
|
if (mainWorkerMessageHandler) {
|
|
// The worker was already loaded using a `<script>` tag.
|
|
fakeWorkerFilesLoadedCapability.resolve(mainWorkerMessageHandler);
|
|
return fakeWorkerFilesLoadedCapability.promise;
|
|
}
|
|
// In the developer build load worker_loader.js which in turn loads all the
|
|
// other files and resolves the promise. In production only the
|
|
// pdf.worker.js file is needed.
|
|
if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION')) {
|
|
if (typeof SystemJS === 'object') {
|
|
SystemJS.import('pdfjs/core/worker').then((worker) => {
|
|
fakeWorkerFilesLoadedCapability.resolve(worker.WorkerMessageHandler);
|
|
}).catch(fakeWorkerFilesLoadedCapability.reject);
|
|
} else {
|
|
fakeWorkerFilesLoadedCapability.reject(
|
|
new Error('SystemJS must be used to load fake worker.'));
|
|
}
|
|
} else {
|
|
const loader = fakeWorkerFilesLoader || function() {
|
|
return loadScript(getWorkerSrc()).then(function() {
|
|
return window.pdfjsWorker.WorkerMessageHandler;
|
|
});
|
|
};
|
|
loader().then(fakeWorkerFilesLoadedCapability.resolve,
|
|
fakeWorkerFilesLoadedCapability.reject);
|
|
}
|
|
return fakeWorkerFilesLoadedCapability.promise;
|
|
}
|
|
|
|
function createCDNWrapper(url) {
|
|
// We will rely on blob URL's property to specify origin.
|
|
// We want this function to fail in case if createObjectURL or Blob do not
|
|
// exist or fail for some reason -- our Worker creation will fail anyway.
|
|
const wrapper = 'importScripts(\'' + url + '\');';
|
|
return URL.createObjectURL(new Blob([wrapper]));
|
|
}
|
|
|
|
/**
|
|
* PDF.js web worker abstraction, which controls the instantiation of PDF
|
|
* documents. Message handlers are used to pass information from the main
|
|
* thread to the worker thread and vice versa. If the creation of a web
|
|
* worker is not possible, a "fake" worker will be used instead.
|
|
*/
|
|
class PDFWorker {
|
|
/**
|
|
* @param {PDFWorkerParameters} params - Worker initialization parameters.
|
|
*/
|
|
constructor({ name = null, port = null,
|
|
verbosity = getVerbosityLevel(), } = {}) {
|
|
if (port && pdfWorkerPorts.has(port)) {
|
|
throw new Error('Cannot use more than one PDFWorker per port');
|
|
}
|
|
|
|
this.name = name;
|
|
this.destroyed = false;
|
|
this.postMessageTransfers = true;
|
|
this.verbosity = verbosity;
|
|
|
|
this._readyCapability = createPromiseCapability();
|
|
this._port = null;
|
|
this._webWorker = null;
|
|
this._messageHandler = null;
|
|
|
|
if (port) {
|
|
pdfWorkerPorts.set(port, this);
|
|
this._initializeFromPort(port);
|
|
return;
|
|
}
|
|
this._initialize();
|
|
}
|
|
|
|
get promise() {
|
|
return this._readyCapability.promise;
|
|
}
|
|
|
|
get port() {
|
|
return this._port;
|
|
}
|
|
|
|
get messageHandler() {
|
|
return this._messageHandler;
|
|
}
|
|
|
|
_initializeFromPort(port) {
|
|
this._port = port;
|
|
this._messageHandler = new MessageHandler('main', 'worker', port);
|
|
this._messageHandler.on('ready', function() {
|
|
// Ignoring 'ready' event -- MessageHandler shall be already initialized
|
|
// and ready to accept the messages.
|
|
});
|
|
this._readyCapability.resolve();
|
|
}
|
|
|
|
_initialize() {
|
|
// If worker support isn't disabled explicit and the browser has worker
|
|
// support, create a new web worker and test if it/the browser fulfills
|
|
// all requirements to run parts of pdf.js in a web worker.
|
|
// Right now, the requirement is, that an Uint8Array is still an
|
|
// Uint8Array as it arrives on the worker. (Chrome added this with v.15.)
|
|
if (typeof Worker !== 'undefined' && !isWorkerDisabled &&
|
|
!getMainThreadWorkerMessageHandler()) {
|
|
let workerSrc = getWorkerSrc();
|
|
|
|
try {
|
|
// Wraps workerSrc path into blob URL, if the former does not belong
|
|
// to the same origin.
|
|
if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('GENERIC') &&
|
|
!isSameOrigin(window.location.href, workerSrc)) {
|
|
workerSrc = createCDNWrapper(
|
|
new URL(workerSrc, window.location).href);
|
|
}
|
|
|
|
// Some versions of FF can't create a worker on localhost, see:
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=683280
|
|
const worker = new Worker(workerSrc);
|
|
const messageHandler = new MessageHandler('main', 'worker', worker);
|
|
const terminateEarly = () => {
|
|
worker.removeEventListener('error', onWorkerError);
|
|
messageHandler.destroy();
|
|
worker.terminate();
|
|
if (this.destroyed) {
|
|
this._readyCapability.reject(new Error('Worker was destroyed'));
|
|
} else {
|
|
// Fall back to fake worker if the termination is caused by an
|
|
// error (e.g. NetworkError / SecurityError).
|
|
this._setupFakeWorker();
|
|
}
|
|
};
|
|
|
|
const onWorkerError = () => {
|
|
if (!this._webWorker) {
|
|
// Worker failed to initialize due to an error. Clean up and fall
|
|
// back to the fake worker.
|
|
terminateEarly();
|
|
}
|
|
};
|
|
worker.addEventListener('error', onWorkerError);
|
|
|
|
messageHandler.on('test', (data) => {
|
|
worker.removeEventListener('error', onWorkerError);
|
|
if (this.destroyed) {
|
|
terminateEarly();
|
|
return; // worker was destroyed
|
|
}
|
|
if (data) { // supportTypedArray
|
|
this._messageHandler = messageHandler;
|
|
this._port = worker;
|
|
this._webWorker = worker;
|
|
if (!data.supportTransfers) {
|
|
this.postMessageTransfers = false;
|
|
}
|
|
this._readyCapability.resolve();
|
|
// Send global setting, e.g. verbosity level.
|
|
messageHandler.send('configure', {
|
|
verbosity: this.verbosity,
|
|
});
|
|
} else {
|
|
this._setupFakeWorker();
|
|
messageHandler.destroy();
|
|
worker.terminate();
|
|
}
|
|
});
|
|
|
|
messageHandler.on('ready', (data) => {
|
|
worker.removeEventListener('error', onWorkerError);
|
|
if (this.destroyed) {
|
|
terminateEarly();
|
|
return; // worker was destroyed
|
|
}
|
|
try {
|
|
sendTest();
|
|
} catch (e) {
|
|
// We need fallback to a faked worker.
|
|
this._setupFakeWorker();
|
|
}
|
|
});
|
|
|
|
const sendTest = () => {
|
|
let testObj = new Uint8Array([this.postMessageTransfers ? 255 : 0]);
|
|
// Some versions of Opera throw a DATA_CLONE_ERR on serializing the
|
|
// typed array. Also, checking if we can use transfers.
|
|
try {
|
|
messageHandler.send('test', testObj, [testObj.buffer]);
|
|
} catch (ex) {
|
|
warn('Cannot use postMessage transfers.');
|
|
testObj[0] = 0;
|
|
messageHandler.send('test', testObj);
|
|
}
|
|
};
|
|
|
|
// It might take time for worker to initialize (especially when AMD
|
|
// loader is used). We will try to send test immediately, and then
|
|
// when 'ready' message will arrive. The worker shall process only
|
|
// first received 'test'.
|
|
sendTest();
|
|
return;
|
|
} catch (e) {
|
|
info('The worker has been disabled.');
|
|
}
|
|
}
|
|
// Either workers are disabled, not supported or have thrown an exception.
|
|
// Thus, we fallback to a faked worker.
|
|
this._setupFakeWorker();
|
|
}
|
|
|
|
_setupFakeWorker() {
|
|
if (!isWorkerDisabled) {
|
|
warn('Setting up fake worker.');
|
|
isWorkerDisabled = true;
|
|
}
|
|
|
|
setupFakeWorkerGlobal().then((WorkerMessageHandler) => {
|
|
if (this.destroyed) {
|
|
this._readyCapability.reject(new Error('Worker was destroyed'));
|
|
return;
|
|
}
|
|
const port = new LoopbackPort();
|
|
this._port = port;
|
|
|
|
// All fake workers use the same port, making id unique.
|
|
const id = 'fake' + (nextFakeWorkerId++);
|
|
|
|
// If the main thread is our worker, setup the handling for the
|
|
// messages -- the main thread sends to it self.
|
|
const workerHandler = new MessageHandler(id + '_worker', id, port);
|
|
WorkerMessageHandler.setup(workerHandler, port);
|
|
|
|
const messageHandler = new MessageHandler(id, id + '_worker', port);
|
|
this._messageHandler = messageHandler;
|
|
this._readyCapability.resolve();
|
|
}).catch((reason) => {
|
|
this._readyCapability.reject(
|
|
new Error(`Setting up fake worker failed: "${reason.message}".`));
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Destroys the worker instance.
|
|
*/
|
|
destroy() {
|
|
this.destroyed = true;
|
|
if (this._webWorker) {
|
|
// We need to terminate only web worker created resource.
|
|
this._webWorker.terminate();
|
|
this._webWorker = null;
|
|
}
|
|
pdfWorkerPorts.delete(this._port);
|
|
this._port = null;
|
|
if (this._messageHandler) {
|
|
this._messageHandler.destroy();
|
|
this._messageHandler = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {PDFWorkerParameters} params - The worker initialization
|
|
* parameters.
|
|
*/
|
|
static fromPort(params) {
|
|
if (!params || !params.port) {
|
|
throw new Error('PDFWorker.fromPort - invalid method signature.');
|
|
}
|
|
if (pdfWorkerPorts.has(params.port)) {
|
|
return pdfWorkerPorts.get(params.port);
|
|
}
|
|
return new PDFWorker(params);
|
|
}
|
|
|
|
static getWorkerSrc() {
|
|
return getWorkerSrc();
|
|
}
|
|
}
|
|
return PDFWorker;
|
|
})();
|
|
|
|
/**
|
|
* For internal use only.
|
|
* @ignore
|
|
*/
|
|
class WorkerTransport {
|
|
constructor(messageHandler, loadingTask, networkStream, params) {
|
|
this.messageHandler = messageHandler;
|
|
this.loadingTask = loadingTask;
|
|
this.commonObjs = new PDFObjects();
|
|
this.fontLoader = new FontLoader({
|
|
docId: loadingTask.docId,
|
|
onUnsupportedFeature: this._onUnsupportedFeature.bind(this),
|
|
});
|
|
this._params = params;
|
|
this.CMapReaderFactory = new params.CMapReaderFactory({
|
|
baseUrl: params.cMapUrl,
|
|
isCompressed: params.cMapPacked,
|
|
});
|
|
|
|
this.destroyed = false;
|
|
this.destroyCapability = null;
|
|
this._passwordCapability = null;
|
|
|
|
this._networkStream = networkStream;
|
|
this._fullReader = null;
|
|
this._lastProgress = null;
|
|
|
|
this.pageCache = [];
|
|
this.pagePromises = [];
|
|
this.downloadInfoCapability = createPromiseCapability();
|
|
|
|
this.setupMessageHandler();
|
|
}
|
|
|
|
destroy() {
|
|
if (this.destroyCapability) {
|
|
return this.destroyCapability.promise;
|
|
}
|
|
|
|
this.destroyed = true;
|
|
this.destroyCapability = createPromiseCapability();
|
|
|
|
if (this._passwordCapability) {
|
|
this._passwordCapability.reject(
|
|
new Error('Worker was destroyed during onPassword callback'));
|
|
}
|
|
|
|
const waitOn = [];
|
|
// We need to wait for all renderings to be completed, e.g.
|
|
// timeout/rAF can take a long time.
|
|
this.pageCache.forEach(function(page) {
|
|
if (page) {
|
|
waitOn.push(page._destroy());
|
|
}
|
|
});
|
|
this.pageCache.length = 0;
|
|
this.pagePromises.length = 0;
|
|
// We also need to wait for the worker to finish its long running tasks.
|
|
const terminated = this.messageHandler.sendWithPromise('Terminate', null);
|
|
waitOn.push(terminated);
|
|
Promise.all(waitOn).then(() => {
|
|
this.fontLoader.clear();
|
|
if (this._networkStream) {
|
|
this._networkStream.cancelAllRequests(
|
|
new AbortException('Worker was terminated.'));
|
|
}
|
|
|
|
if (this.messageHandler) {
|
|
this.messageHandler.destroy();
|
|
this.messageHandler = null;
|
|
}
|
|
this.destroyCapability.resolve();
|
|
}, this.destroyCapability.reject);
|
|
return this.destroyCapability.promise;
|
|
}
|
|
|
|
setupMessageHandler() {
|
|
const { messageHandler, loadingTask, } = this;
|
|
|
|
messageHandler.on('GetReader', (data, sink) => {
|
|
assert(this._networkStream);
|
|
this._fullReader = this._networkStream.getFullReader();
|
|
this._fullReader.onProgress = (evt) => {
|
|
this._lastProgress = {
|
|
loaded: evt.loaded,
|
|
total: evt.total,
|
|
};
|
|
};
|
|
sink.onPull = () => {
|
|
this._fullReader.read().then(function({ value, done, }) {
|
|
if (done) {
|
|
sink.close();
|
|
return;
|
|
}
|
|
assert(isArrayBuffer(value));
|
|
// Enqueue data chunk into sink, and transfer it
|
|
// to other side as `Transferable` object.
|
|
sink.enqueue(new Uint8Array(value), 1, [value]);
|
|
}).catch((reason) => {
|
|
sink.error(reason);
|
|
});
|
|
};
|
|
|
|
sink.onCancel = (reason) => {
|
|
this._fullReader.cancel(reason);
|
|
};
|
|
});
|
|
|
|
messageHandler.on('ReaderHeadersReady', (data) => {
|
|
const headersCapability = createPromiseCapability();
|
|
const fullReader = this._fullReader;
|
|
fullReader.headersReady.then(() => {
|
|
// If stream or range are disabled, it's our only way to report
|
|
// loading progress.
|
|
if (!fullReader.isStreamingSupported || !fullReader.isRangeSupported) {
|
|
if (this._lastProgress && loadingTask.onProgress) {
|
|
loadingTask.onProgress(this._lastProgress);
|
|
}
|
|
fullReader.onProgress = (evt) => {
|
|
if (loadingTask.onProgress) {
|
|
loadingTask.onProgress({
|
|
loaded: evt.loaded,
|
|
total: evt.total,
|
|
});
|
|
}
|
|
};
|
|
}
|
|
|
|
headersCapability.resolve({
|
|
isStreamingSupported: fullReader.isStreamingSupported,
|
|
isRangeSupported: fullReader.isRangeSupported,
|
|
contentLength: fullReader.contentLength,
|
|
});
|
|
}, headersCapability.reject);
|
|
|
|
return headersCapability.promise;
|
|
});
|
|
|
|
messageHandler.on('GetRangeReader', (data, sink) => {
|
|
assert(this._networkStream);
|
|
const rangeReader =
|
|
this._networkStream.getRangeReader(data.begin, data.end);
|
|
|
|
// When streaming is enabled, it's possible that the data requested here
|
|
// has already been fetched via the `_fullRequestReader` implementation.
|
|
// However, given that the PDF data is loaded asynchronously on the
|
|
// main-thread and then sent via `postMessage` to the worker-thread,
|
|
// it may not have been available during parsing (hence the attempt to
|
|
// use range requests here).
|
|
//
|
|
// To avoid wasting time and resources here, we'll thus *not* dispatch
|
|
// range requests if the data was already loaded but has not been sent to
|
|
// the worker-thread yet (which will happen via the `_fullRequestReader`).
|
|
if (!rangeReader) {
|
|
sink.close();
|
|
return;
|
|
}
|
|
|
|
sink.onPull = () => {
|
|
rangeReader.read().then(function({ value, done, }) {
|
|
if (done) {
|
|
sink.close();
|
|
return;
|
|
}
|
|
assert(isArrayBuffer(value));
|
|
sink.enqueue(new Uint8Array(value), 1, [value]);
|
|
}).catch((reason) => {
|
|
sink.error(reason);
|
|
});
|
|
};
|
|
|
|
sink.onCancel = (reason) => {
|
|
rangeReader.cancel(reason);
|
|
};
|
|
});
|
|
|
|
messageHandler.on('GetDoc', ({ pdfInfo, }) => {
|
|
this._numPages = pdfInfo.numPages;
|
|
loadingTask._capability.resolve(new PDFDocumentProxy(pdfInfo, this));
|
|
});
|
|
|
|
messageHandler.on('DocException', function(ex) {
|
|
let reason;
|
|
switch (ex.name) {
|
|
case 'PasswordException':
|
|
reason = new PasswordException(ex.message, ex.code);
|
|
break;
|
|
case 'InvalidPDFException':
|
|
reason = new InvalidPDFException(ex.message);
|
|
break;
|
|
case 'MissingPDFException':
|
|
reason = new MissingPDFException(ex.message);
|
|
break;
|
|
case 'UnexpectedResponseException':
|
|
reason = new UnexpectedResponseException(ex.message, ex.status);
|
|
break;
|
|
case 'UnknownErrorException':
|
|
reason = new UnknownErrorException(ex.message, ex.details);
|
|
break;
|
|
}
|
|
if (typeof PDFJSDev === 'undefined' ||
|
|
PDFJSDev.test('!PRODUCTION || TESTING')) {
|
|
assert(reason instanceof Error, 'DocException: expected an Error.');
|
|
}
|
|
loadingTask._capability.reject(reason);
|
|
});
|
|
|
|
messageHandler.on('PasswordRequest', (exception) => {
|
|
this._passwordCapability = createPromiseCapability();
|
|
|
|
if (loadingTask.onPassword) {
|
|
const updatePassword = (password) => {
|
|
this._passwordCapability.resolve({
|
|
password,
|
|
});
|
|
};
|
|
try {
|
|
loadingTask.onPassword(updatePassword, exception.code);
|
|
} catch (ex) {
|
|
this._passwordCapability.reject(ex);
|
|
}
|
|
} else {
|
|
this._passwordCapability.reject(
|
|
new PasswordException(exception.message, exception.code));
|
|
}
|
|
return this._passwordCapability.promise;
|
|
});
|
|
|
|
messageHandler.on('DataLoaded', (data) => {
|
|
// For consistency: Ensure that progress is always reported when the
|
|
// entire PDF file has been loaded, regardless of how it was fetched.
|
|
if (loadingTask.onProgress) {
|
|
loadingTask.onProgress({
|
|
loaded: data.length,
|
|
total: data.length,
|
|
});
|
|
}
|
|
this.downloadInfoCapability.resolve(data);
|
|
});
|
|
|
|
messageHandler.on('StartRenderPage', (data) => {
|
|
if (this.destroyed) {
|
|
return; // Ignore any pending requests if the worker was terminated.
|
|
}
|
|
|
|
const page = this.pageCache[data.pageIndex];
|
|
page._startRenderPage(data.transparency, data.intent);
|
|
});
|
|
|
|
messageHandler.on('commonobj', (data) => {
|
|
if (this.destroyed) {
|
|
return; // Ignore any pending requests if the worker was terminated.
|
|
}
|
|
|
|
const [id, type, exportedData] = data;
|
|
if (this.commonObjs.has(id)) {
|
|
return;
|
|
}
|
|
|
|
switch (type) {
|
|
case 'Font':
|
|
const params = this._params;
|
|
|
|
if ('error' in exportedData) {
|
|
const exportedError = exportedData.error;
|
|
warn(`Error during font loading: ${exportedError}`);
|
|
this.commonObjs.resolve(id, exportedError);
|
|
break;
|
|
}
|
|
|
|
let fontRegistry = null;
|
|
if (params.pdfBug && globalScope.FontInspector &&
|
|
globalScope.FontInspector.enabled) {
|
|
fontRegistry = {
|
|
registerFont(font, url) {
|
|
globalScope['FontInspector'].fontAdded(font, url);
|
|
},
|
|
};
|
|
}
|
|
const font = new FontFaceObject(exportedData, {
|
|
isEvalSupported: params.isEvalSupported,
|
|
disableFontFace: params.disableFontFace,
|
|
ignoreErrors: params.ignoreErrors,
|
|
onUnsupportedFeature: this._onUnsupportedFeature.bind(this),
|
|
fontRegistry,
|
|
});
|
|
|
|
this.fontLoader.bind(font).then(() => {
|
|
this.commonObjs.resolve(id, font);
|
|
}, (reason) => {
|
|
messageHandler.sendWithPromise('FontFallback', {
|
|
id,
|
|
}).finally(() => {
|
|
this.commonObjs.resolve(id, font);
|
|
});
|
|
});
|
|
break;
|
|
case 'FontPath':
|
|
case 'FontType3Res':
|
|
this.commonObjs.resolve(id, exportedData);
|
|
break;
|
|
default:
|
|
throw new Error(`Got unknown common object type ${type}`);
|
|
}
|
|
});
|
|
|
|
messageHandler.on('obj', (data) => {
|
|
if (this.destroyed) {
|
|
// Ignore any pending requests if the worker was terminated.
|
|
return undefined;
|
|
}
|
|
|
|
const [id, pageIndex, type, imageData] = data;
|
|
const pageProxy = this.pageCache[pageIndex];
|
|
if (pageProxy.objs.has(id)) {
|
|
return undefined;
|
|
}
|
|
|
|
switch (type) {
|
|
case 'JpegStream':
|
|
return new Promise((resolve, reject) => {
|
|
const img = new Image();
|
|
img.onload = function() {
|
|
resolve(img);
|
|
};
|
|
img.onerror = function() {
|
|
// Note that when the browser image loading/decoding fails,
|
|
// we'll fallback to the built-in PDF.js JPEG decoder; see
|
|
// `PartialEvaluator.buildPaintImageXObject` in the
|
|
// `src/core/evaluator.js` file.
|
|
reject(new Error('Error during JPEG image loading'));
|
|
|
|
// Always remember to release the image data if errors occurred.
|
|
releaseImageResources(img);
|
|
};
|
|
img.src = imageData;
|
|
}).then((img) => {
|
|
pageProxy.objs.resolve(id, img);
|
|
});
|
|
case 'Image':
|
|
pageProxy.objs.resolve(id, imageData);
|
|
|
|
// Heuristic that will allow us not to store large data.
|
|
const MAX_IMAGE_SIZE_TO_STORE = 8000000;
|
|
if (imageData && 'data' in imageData &&
|
|
imageData.data.length > MAX_IMAGE_SIZE_TO_STORE) {
|
|
pageProxy.cleanupAfterRender = true;
|
|
}
|
|
break;
|
|
default:
|
|
throw new Error(`Got unknown object type ${type}`);
|
|
}
|
|
return undefined;
|
|
});
|
|
|
|
messageHandler.on('DocProgress', (data) => {
|
|
if (this.destroyed) {
|
|
return; // Ignore any pending requests if the worker was terminated.
|
|
}
|
|
|
|
if (loadingTask.onProgress) {
|
|
loadingTask.onProgress({
|
|
loaded: data.loaded,
|
|
total: data.total,
|
|
});
|
|
}
|
|
});
|
|
|
|
messageHandler.on('UnsupportedFeature',
|
|
this._onUnsupportedFeature.bind(this));
|
|
|
|
messageHandler.on('JpegDecode', (data) => {
|
|
if (this.destroyed) {
|
|
return Promise.reject(new Error('Worker was destroyed'));
|
|
}
|
|
|
|
if (typeof document === 'undefined') {
|
|
// Make sure that this code is not executing in node.js, as
|
|
// it's using DOM image, and there is no library to support that.
|
|
return Promise.reject(new Error('"document" is not defined.'));
|
|
}
|
|
|
|
const [imageUrl, components] = data;
|
|
if (components !== 3 && components !== 1) {
|
|
return Promise.reject(
|
|
new Error('Only 3 components or 1 component can be returned'));
|
|
}
|
|
|
|
return new Promise(function(resolve, reject) {
|
|
const img = new Image();
|
|
img.onload = function() {
|
|
const { width, height, } = img;
|
|
const size = width * height;
|
|
const rgbaLength = size * 4;
|
|
const buf = new Uint8ClampedArray(size * components);
|
|
let tmpCanvas = document.createElement('canvas');
|
|
tmpCanvas.width = width;
|
|
tmpCanvas.height = height;
|
|
let tmpCtx = tmpCanvas.getContext('2d');
|
|
tmpCtx.drawImage(img, 0, 0);
|
|
const data = tmpCtx.getImageData(0, 0, width, height).data;
|
|
|
|
if (components === 3) {
|
|
for (let i = 0, j = 0; i < rgbaLength; i += 4, j += 3) {
|
|
buf[j] = data[i];
|
|
buf[j + 1] = data[i + 1];
|
|
buf[j + 2] = data[i + 2];
|
|
}
|
|
} else if (components === 1) {
|
|
for (let i = 0, j = 0; i < rgbaLength; i += 4, j++) {
|
|
buf[j] = data[i];
|
|
}
|
|
}
|
|
resolve({ data: buf, width, height, });
|
|
|
|
// Immediately release the image data once decoding has finished.
|
|
releaseImageResources(img);
|
|
// Zeroing the width and height cause Firefox to release graphics
|
|
// resources immediately, which can greatly reduce memory consumption.
|
|
tmpCanvas.width = 0;
|
|
tmpCanvas.height = 0;
|
|
tmpCanvas = null;
|
|
tmpCtx = null;
|
|
};
|
|
img.onerror = function() {
|
|
reject(new Error('JpegDecode failed to load image'));
|
|
|
|
// Always remember to release the image data if errors occurred.
|
|
releaseImageResources(img);
|
|
};
|
|
img.src = imageUrl;
|
|
});
|
|
});
|
|
|
|
messageHandler.on('FetchBuiltInCMap', (data, sink) => {
|
|
if (this.destroyed) {
|
|
sink.error(new Error('Worker was destroyed'));
|
|
return;
|
|
}
|
|
let fetched = false;
|
|
|
|
sink.onPull = () => {
|
|
if (fetched) {
|
|
sink.close();
|
|
return;
|
|
}
|
|
fetched = true;
|
|
|
|
this.CMapReaderFactory.fetch(data).then(function(builtInCMap) {
|
|
sink.enqueue(builtInCMap, 1, [builtInCMap.cMapData.buffer]);
|
|
}).catch(function(reason) {
|
|
sink.error(reason);
|
|
});
|
|
};
|
|
});
|
|
}
|
|
|
|
_onUnsupportedFeature({ featureId, }) {
|
|
if (this.destroyed) {
|
|
return; // Ignore any pending requests if the worker was terminated.
|
|
}
|
|
if (this.loadingTask.onUnsupportedFeature) {
|
|
this.loadingTask.onUnsupportedFeature(featureId);
|
|
}
|
|
}
|
|
|
|
getData() {
|
|
return this.messageHandler.sendWithPromise('GetData', null);
|
|
}
|
|
|
|
getPage(pageNumber) {
|
|
if (!Number.isInteger(pageNumber) ||
|
|
pageNumber <= 0 || pageNumber > this._numPages) {
|
|
return Promise.reject(new Error('Invalid page request'));
|
|
}
|
|
|
|
const pageIndex = pageNumber - 1;
|
|
if (pageIndex in this.pagePromises) {
|
|
return this.pagePromises[pageIndex];
|
|
}
|
|
const promise = this.messageHandler.sendWithPromise('GetPage', {
|
|
pageIndex,
|
|
}).then((pageInfo) => {
|
|
if (this.destroyed) {
|
|
throw new Error('Transport destroyed');
|
|
}
|
|
const page = new PDFPageProxy(pageIndex, pageInfo, this,
|
|
this._params.pdfBug);
|
|
this.pageCache[pageIndex] = page;
|
|
return page;
|
|
});
|
|
this.pagePromises[pageIndex] = promise;
|
|
return promise;
|
|
}
|
|
|
|
getPageIndex(ref) {
|
|
return this.messageHandler.sendWithPromise('GetPageIndex', {
|
|
ref,
|
|
}).catch(function(reason) {
|
|
return Promise.reject(new Error(reason));
|
|
});
|
|
}
|
|
|
|
getAnnotations(pageIndex, intent) {
|
|
return this.messageHandler.sendWithPromise('GetAnnotations', {
|
|
pageIndex,
|
|
intent,
|
|
});
|
|
}
|
|
|
|
getDestinations() {
|
|
return this.messageHandler.sendWithPromise('GetDestinations', null);
|
|
}
|
|
|
|
getDestination(id) {
|
|
if (typeof id !== 'string') {
|
|
return Promise.reject(new Error('Invalid destination request.'));
|
|
}
|
|
return this.messageHandler.sendWithPromise('GetDestination', {
|
|
id,
|
|
});
|
|
}
|
|
|
|
getPageLabels() {
|
|
return this.messageHandler.sendWithPromise('GetPageLabels', null);
|
|
}
|
|
|
|
getPageLayout() {
|
|
return this.messageHandler.sendWithPromise('GetPageLayout', null);
|
|
}
|
|
|
|
getPageMode() {
|
|
return this.messageHandler.sendWithPromise('GetPageMode', null);
|
|
}
|
|
|
|
getViewerPreferences() {
|
|
return this.messageHandler.sendWithPromise('GetViewerPreferences', null);
|
|
}
|
|
|
|
getOpenActionDestination() {
|
|
return this.messageHandler.sendWithPromise('GetOpenActionDestination',
|
|
null);
|
|
}
|
|
|
|
getAttachments() {
|
|
return this.messageHandler.sendWithPromise('GetAttachments', null);
|
|
}
|
|
|
|
getJavaScript() {
|
|
return this.messageHandler.sendWithPromise('GetJavaScript', null);
|
|
}
|
|
|
|
getOutline() {
|
|
return this.messageHandler.sendWithPromise('GetOutline', null);
|
|
}
|
|
|
|
getPermissions() {
|
|
return this.messageHandler.sendWithPromise('GetPermissions', null);
|
|
}
|
|
|
|
getMetadata() {
|
|
return this.messageHandler.sendWithPromise('GetMetadata', null).
|
|
then((results) => {
|
|
return {
|
|
info: results[0],
|
|
metadata: (results[1] ? new Metadata(results[1]) : null),
|
|
contentDispositionFilename: (this._fullReader ?
|
|
this._fullReader.filename : null),
|
|
};
|
|
});
|
|
}
|
|
|
|
getStats() {
|
|
return this.messageHandler.sendWithPromise('GetStats', null);
|
|
}
|
|
|
|
startCleanup() {
|
|
this.messageHandler.sendWithPromise('Cleanup', null).then(() => {
|
|
for (let i = 0, ii = this.pageCache.length; i < ii; i++) {
|
|
const page = this.pageCache[i];
|
|
if (page) {
|
|
page.cleanup();
|
|
}
|
|
}
|
|
this.commonObjs.clear();
|
|
this.fontLoader.clear();
|
|
});
|
|
}
|
|
|
|
get loadingParams() {
|
|
const params = this._params;
|
|
return shadow(this, 'loadingParams', {
|
|
disableAutoFetch: params.disableAutoFetch,
|
|
disableCreateObjectURL: params.disableCreateObjectURL,
|
|
disableFontFace: params.disableFontFace,
|
|
nativeImageDecoderSupport: params.nativeImageDecoderSupport,
|
|
});
|
|
}
|
|
}
|
|
|
|
/**
|
|
* A PDF document and page is built of many objects. E.g. there are objects for
|
|
* fonts, images, rendering code, etc. These objects may get processed inside of
|
|
* a worker. This class implements some basic methods to manage these objects.
|
|
* @ignore
|
|
*/
|
|
class PDFObjects {
|
|
constructor() {
|
|
this._objs = Object.create(null);
|
|
}
|
|
|
|
/**
|
|
* Ensures there is an object defined for `objId`.
|
|
* @private
|
|
*/
|
|
_ensureObj(objId) {
|
|
if (this._objs[objId]) {
|
|
return this._objs[objId];
|
|
}
|
|
return this._objs[objId] = {
|
|
capability: createPromiseCapability(),
|
|
data: null,
|
|
resolved: false,
|
|
};
|
|
}
|
|
|
|
/**
|
|
* If called *without* callback, this returns the data of `objId` but the
|
|
* object needs to be resolved. If it isn't, this method throws.
|
|
*
|
|
* If called *with* a callback, the callback is called with the data of the
|
|
* object once the object is resolved. That means, if you call this method
|
|
* and the object is already resolved, the callback gets called right away.
|
|
*/
|
|
get(objId, callback = null) {
|
|
// If there is a callback, then the get can be async and the object is
|
|
// not required to be resolved right now.
|
|
if (callback) {
|
|
this._ensureObj(objId).capability.promise.then(callback);
|
|
return null;
|
|
}
|
|
// If there isn't a callback, the user expects to get the resolved data
|
|
// directly.
|
|
const obj = this._objs[objId];
|
|
// If there isn't an object yet or the object isn't resolved, then the
|
|
// data isn't ready yet!
|
|
if (!obj || !obj.resolved) {
|
|
throw new Error(`Requesting object that isn't resolved yet ${objId}.`);
|
|
}
|
|
return obj.data;
|
|
}
|
|
|
|
has(objId) {
|
|
const obj = this._objs[objId];
|
|
return (obj ? obj.resolved : false);
|
|
}
|
|
|
|
/**
|
|
* Resolves the object `objId` with optional `data`.
|
|
*/
|
|
resolve(objId, data) {
|
|
const obj = this._ensureObj(objId);
|
|
|
|
obj.resolved = true;
|
|
obj.data = data;
|
|
obj.capability.resolve(data);
|
|
}
|
|
|
|
clear() {
|
|
for (const objId in this._objs) {
|
|
const { data, } = this._objs[objId];
|
|
|
|
if (typeof Image !== 'undefined' && data instanceof Image) {
|
|
// Always release the image data when clearing out the cached objects.
|
|
releaseImageResources(data);
|
|
}
|
|
}
|
|
this._objs = Object.create(null);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Allows controlling of the rendering tasks.
|
|
* @alias RenderTask
|
|
*/
|
|
class RenderTask {
|
|
constructor(internalRenderTask) {
|
|
this._internalRenderTask = internalRenderTask;
|
|
|
|
/**
|
|
* Callback for incremental rendering -- a function that will be called
|
|
* each time the rendering is paused. To continue rendering call the
|
|
* function that is the first argument to the callback.
|
|
* @type {function}
|
|
*/
|
|
this.onContinue = null;
|
|
}
|
|
|
|
/**
|
|
* Promise for rendering task completion.
|
|
* @type {Promise}
|
|
*/
|
|
get promise() {
|
|
return this._internalRenderTask.capability.promise;
|
|
}
|
|
|
|
/**
|
|
* Cancels the rendering task. If the task is currently rendering it will
|
|
* not be cancelled until graphics pauses with a timeout. The promise that
|
|
* this object extends will be rejected when cancelled.
|
|
*/
|
|
cancel() {
|
|
this._internalRenderTask.cancel();
|
|
}
|
|
|
|
/**
|
|
* Registers callbacks to indicate the rendering task completion.
|
|
* @ignore
|
|
*/
|
|
then(onFulfilled, onRejected) {
|
|
throw new Error('Removed API method: ' +
|
|
'RenderTask.then, use the `promise` getter instead.');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* For internal use only.
|
|
* @ignore
|
|
*/
|
|
const InternalRenderTask = (function InternalRenderTaskClosure() {
|
|
const canvasInRendering = new WeakSet();
|
|
|
|
class InternalRenderTask {
|
|
constructor({ callback, params, objs, commonObjs, operatorList, pageNumber,
|
|
canvasFactory, webGLContext, useRequestAnimationFrame = false,
|
|
pdfBug = false, }) {
|
|
this.callback = callback;
|
|
this.params = params;
|
|
this.objs = objs;
|
|
this.commonObjs = commonObjs;
|
|
this.operatorListIdx = null;
|
|
this.operatorList = operatorList;
|
|
this.pageNumber = pageNumber;
|
|
this.canvasFactory = canvasFactory;
|
|
this.webGLContext = webGLContext;
|
|
this._pdfBug = pdfBug;
|
|
|
|
this.running = false;
|
|
this.graphicsReadyCallback = null;
|
|
this.graphicsReady = false;
|
|
this._useRequestAnimationFrame = (useRequestAnimationFrame === true &&
|
|
typeof window !== 'undefined');
|
|
this.cancelled = false;
|
|
this.capability = createPromiseCapability();
|
|
this.task = new RenderTask(this);
|
|
// caching this-bound methods
|
|
this._continueBound = this._continue.bind(this);
|
|
this._scheduleNextBound = this._scheduleNext.bind(this);
|
|
this._nextBound = this._next.bind(this);
|
|
this._canvas = params.canvasContext.canvas;
|
|
}
|
|
|
|
initializeGraphics(transparency = false) {
|
|
if (this.cancelled) {
|
|
return;
|
|
}
|
|
if (this._canvas) {
|
|
if (canvasInRendering.has(this._canvas)) {
|
|
throw new Error(
|
|
'Cannot use the same canvas during multiple render() operations. ' +
|
|
'Use different canvas or ensure previous operations were ' +
|
|
'cancelled or completed.');
|
|
}
|
|
canvasInRendering.add(this._canvas);
|
|
}
|
|
|
|
if (this._pdfBug && globalScope.StepperManager &&
|
|
globalScope.StepperManager.enabled) {
|
|
this.stepper = globalScope.StepperManager.create(this.pageNumber - 1);
|
|
this.stepper.init(this.operatorList);
|
|
this.stepper.nextBreakPoint = this.stepper.getNextBreakPoint();
|
|
}
|
|
const {
|
|
canvasContext, viewport, transform, imageLayer, background,
|
|
} = this.params;
|
|
|
|
this.gfx = new CanvasGraphics(canvasContext, this.commonObjs, this.objs,
|
|
this.canvasFactory, this.webGLContext,
|
|
imageLayer);
|
|
this.gfx.beginDrawing({
|
|
transform,
|
|
viewport,
|
|
transparency,
|
|
background,
|
|
});
|
|
this.operatorListIdx = 0;
|
|
this.graphicsReady = true;
|
|
if (this.graphicsReadyCallback) {
|
|
this.graphicsReadyCallback();
|
|
}
|
|
}
|
|
|
|
cancel(error = null) {
|
|
this.running = false;
|
|
this.cancelled = true;
|
|
if (this.gfx) {
|
|
this.gfx.endDrawing();
|
|
}
|
|
if (this._canvas) {
|
|
canvasInRendering.delete(this._canvas);
|
|
}
|
|
this.callback(error || new RenderingCancelledException(
|
|
`Rendering cancelled, page ${this.pageNumber}`, 'canvas'));
|
|
}
|
|
|
|
operatorListChanged() {
|
|
if (!this.graphicsReady) {
|
|
if (!this.graphicsReadyCallback) {
|
|
this.graphicsReadyCallback = this._continueBound;
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (this.stepper) {
|
|
this.stepper.updateOperatorList(this.operatorList);
|
|
}
|
|
|
|
if (this.running) {
|
|
return;
|
|
}
|
|
this._continue();
|
|
}
|
|
|
|
_continue() {
|
|
this.running = true;
|
|
if (this.cancelled) {
|
|
return;
|
|
}
|
|
if (this.task.onContinue) {
|
|
this.task.onContinue(this._scheduleNextBound);
|
|
} else {
|
|
this._scheduleNext();
|
|
}
|
|
}
|
|
|
|
_scheduleNext() {
|
|
if (this._useRequestAnimationFrame) {
|
|
window.requestAnimationFrame(() => {
|
|
this._nextBound().catch(this.cancel.bind(this));
|
|
});
|
|
} else {
|
|
Promise.resolve().then(this._nextBound).catch(this.cancel.bind(this));
|
|
}
|
|
}
|
|
|
|
async _next() {
|
|
if (this.cancelled) {
|
|
return;
|
|
}
|
|
this.operatorListIdx = this.gfx.executeOperatorList(this.operatorList,
|
|
this.operatorListIdx,
|
|
this._continueBound,
|
|
this.stepper);
|
|
if (this.operatorListIdx === this.operatorList.argsArray.length) {
|
|
this.running = false;
|
|
if (this.operatorList.lastChunk) {
|
|
this.gfx.endDrawing();
|
|
if (this._canvas) {
|
|
canvasInRendering.delete(this._canvas);
|
|
}
|
|
this.callback();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return InternalRenderTask;
|
|
})();
|
|
|
|
const version = (typeof PDFJSDev !== 'undefined' ?
|
|
PDFJSDev.eval('BUNDLE_VERSION') : null);
|
|
const build = (typeof PDFJSDev !== 'undefined' ?
|
|
PDFJSDev.eval('BUNDLE_BUILD') : null);
|
|
|
|
export {
|
|
getDocument,
|
|
LoopbackPort,
|
|
PDFDataRangeTransport,
|
|
PDFWorker,
|
|
PDFDocumentProxy,
|
|
PDFPageProxy,
|
|
setPDFNetworkStreamFactory,
|
|
version,
|
|
build,
|
|
};
|