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Merge pull request #9479 from Snuffleupagus/refactor-viewer-options

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[api-major] Refactor viewer components initialization to reduce their dependency on the global `PDFJS` object
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Tim van der Meij 2018-02-14 22:47:33 +01:00 committed by GitHub
commit 538dda1096
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24 changed files with 256 additions and 274 deletions
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6
examples/mobile-viewer/viewer.js
View File

@ -21,8 +21,8 @@ if (typeof PDFJS === 'undefined' || !PDFJS.PDFViewer || !PDFJS.getDocument) {
' `gulp dist-install`');
}
PDFJS.useOnlyCssZoom = true;
PDFJS.disableTextLayer = true;
var USE_ONLY_CSS_ZOOM = true;
var TEXT_LAYER_MODE = 0; // DISABLE
PDFJS.maxImageSize = 1024 * 1024;
PDFJS.workerSrc = '../../node_modules/pdfjs-dist/build/pdf.worker.js';
PDFJS.cMapUrl = '../../node_modules/pdfjs-dist/cmaps/';
@ -298,6 +298,8 @@ var PDFViewerApplication = {
container: container,
linkService: linkService,
l10n: this.l10n,
useOnlyCssZoom: USE_ONLY_CSS_ZOOM,
textLayerMode: TEXT_LAYER_MODE,
});
this.pdfViewer = pdfViewer;
linkService.setViewer(pdfViewer);

19
extensions/chromium/preferences_schema.json
View File

@ -70,11 +70,16 @@
"type": "boolean",
"default": false
},
"disableTextLayer": {
"title": "Disable text selection layer",
"description": "Whether to disable the text selection layer.",
"type": "boolean",
"default": false
"textLayerMode": {
"title": "Text layer mode",
"description": "Controls if the text layer is enabled, and the selection mode that is used.\n 0 = Disabled.\n 1 = Enabled.\n 2 = (Experimental) Enabled, with enhanced text selection.",
"type": "integer",
"enum": [
0,
1,
2
],
"default": 1
},
"useOnlyCssZoom": {
"type": "boolean",
@ -107,10 +112,6 @@
"description": "Whether to prevent the extension from reporting the extension and browser version to the extension developers.",
"default": false
},
"enhanceTextSelection": {
"type": "boolean",
"default": false
},
"renderer": {
"type": "string",
"enum": [

29
src/display/annotation_layer.js
View File

@ -14,8 +14,7 @@
*/
import {
addLinkAttributes, DOMSVGFactory, getDefaultSetting, getFilenameFromUrl,
LinkTarget
addLinkAttributes, DOMSVGFactory, getFilenameFromUrl, LinkTarget
} from './dom_utils';
import {
AnnotationBorderStyleType, AnnotationType, stringToPDFString, unreachable,
@ -30,7 +29,8 @@ import {
* @property {PageViewport} viewport
* @property {IPDFLinkService} linkService
* @property {DownloadManager} downloadManager
* @property {string} imageResourcesPath
* @property {string} imageResourcesPath - (optional) Path for image resources,
* mainly for annotation icons. Include trailing slash.
* @property {boolean} renderInteractiveForms
* @property {Object} svgFactory
*/
@ -281,17 +281,21 @@ class LinkAnnotationElement extends AnnotationElement {
render() {
this.container.className = 'linkAnnotation';
let { data, linkService, } = this;
let link = document.createElement('a');
addLinkAttributes(link, {
url: this.data.url,
target: (this.data.newWindow ? LinkTarget.BLANK : undefined),
url: data.url,
target: (data.newWindow ?
LinkTarget.BLANK : linkService.externalLinkTarget),
rel: linkService.externalLinkRel,
});
if (!this.data.url) {
if (this.data.action) {
this._bindNamedAction(link, this.data.action);
if (!data.url) {
if (data.action) {
this._bindNamedAction(link, data.action);
} else {
this._bindLink(link, this.data.dest);
this._bindLink(link, data.dest);
}
}
@ -1183,7 +1187,9 @@ class FileAttachmentAnnotationElement extends AnnotationElement {
* @property {Array} annotations
* @property {PDFPage} page
* @property {IPDFLinkService} linkService
* @property {string} imageResourcesPath
* @property {DownloadManager} downloadManager
* @property {string} imageResourcesPath - (optional) Path for image resources,
* mainly for annotation icons. Include trailing slash.
* @property {boolean} renderInteractiveForms
*/
@ -1208,8 +1214,7 @@ class AnnotationLayer {
viewport: parameters.viewport,
linkService: parameters.linkService,
downloadManager: parameters.downloadManager,
imageResourcesPath: parameters.imageResourcesPath ||
getDefaultSetting('imageResourcesPath'),
imageResourcesPath: parameters.imageResourcesPath || '',
renderInteractiveForms: parameters.renderInteractiveForms || false,
svgFactory: new DOMSVGFactory(),
});

8
src/display/api.js
View File

@ -707,6 +707,8 @@ var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
* calling of PDFPage.getViewport method.
* @property {string} intent - Rendering intent, can be 'display' or 'print'
* (default value is 'display').
* @property {boolean} enableWebGL - (optional) Enables WebGL accelerated
* rendering for some operations. The default value is `false`.
* @property {boolean} renderInteractiveForms - (optional) Whether or not
* interactive form elements are rendered in the display
* layer. If so, we do not render them on canvas as well.
@ -743,7 +745,7 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
this.pageIndex = pageIndex;
this.pageInfo = pageInfo;
this.transport = transport;
this._stats = (getDefaultSetting('enableStats') ?
this._stats = (getDefaultSetting('pdfBug') ?
new StatTimer() : DummyStatTimer);
this.commonObjs = transport.commonObjs;
this.objs = new PDFObjects();
@ -828,9 +830,7 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
var renderingIntent = (params.intent === 'print' ? 'print' : 'display');
var canvasFactory = params.canvasFactory || new DOMCanvasFactory();
let webGLContext = new WebGLContext({
// TODO: When moving this parameter from `PDFJS` to {RenderParameters},
// change its name to `enableWebGL` instead.
enable: !getDefaultSetting('disableWebGL'),
enable: params.enableWebGL,
});
if (!this.intentStates[renderingIntent]) {

67
src/display/dom_utils.js
View File

@ -274,7 +274,7 @@ var RenderingCancelledException = (function RenderingCancelledException() {
return RenderingCancelledException;
})();
var LinkTarget = {
const LinkTarget = {
NONE: 0, // Default value.
SELF: 1,
BLANK: 2,
@ -282,7 +282,7 @@ var LinkTarget = {
TOP: 4,
};
var LinkTargetStringMap = [
const LinkTargetStringMap = [
'',
'_self',
'_blank',
@ -294,8 +294,10 @@ var LinkTargetStringMap = [
* @typedef ExternalLinkParameters
* @typedef {Object} ExternalLinkParameters
* @property {string} url - An absolute URL.
* @property {LinkTarget} target - The link target.
* @property {string} rel - The link relationship.
* @property {LinkTarget} target - (optional) The link target.
* The default value is `LinkTarget.NONE`.
* @property {string} rel - (optional) The link relationship.
* The default value is `DEFAULT_LINK_REL`.
*/
/**
@ -303,22 +305,16 @@ var LinkTargetStringMap = [
* @param {HTMLLinkElement} link - The link element.
* @param {ExternalLinkParameters} params
*/
function addLinkAttributes(link, params) {
var url = params && params.url;
function addLinkAttributes(link, { url, target, rel, } = {}) {
link.href = link.title = (url ? removeNullCharacters(url) : '');
if (url) {
var target = params.target;
if (typeof target === 'undefined') {
target = getDefaultSetting('externalLinkTarget');
}
link.target = LinkTargetStringMap[target];
const LinkTargetValues = Object.values(LinkTarget);
let targetIndex =
LinkTargetValues.includes(target) ? target : LinkTarget.NONE;
link.target = LinkTargetStringMap[targetIndex];
var rel = params.rel;
if (typeof rel === 'undefined') {
rel = getDefaultSetting('externalLinkRel');
}
link.rel = rel;
link.rel = (typeof rel === 'string' ? rel : DEFAULT_LINK_REL);
}
}
@ -349,8 +345,6 @@ function getDefaultSetting(id) {
return globalSettings ? globalSettings.disableFontFace : false;
case 'disableCreateObjectURL':
return globalSettings ? globalSettings.disableCreateObjectURL : false;
case 'disableWebGL':
return globalSettings ? globalSettings.disableWebGL : true;
case 'cMapUrl':
return globalSettings ? globalSettings.cMapUrl : null;
case 'cMapPacked':
@ -363,49 +357,13 @@ function getDefaultSetting(id) {
return globalSettings ? globalSettings.workerSrc : null;
case 'maxImageSize':
return globalSettings ? globalSettings.maxImageSize : -1;
case 'imageResourcesPath':
return globalSettings ? globalSettings.imageResourcesPath : '';
case 'isEvalSupported':
return globalSettings ? globalSettings.isEvalSupported : true;
case 'externalLinkTarget':
if (!globalSettings) {
return LinkTarget.NONE;
}
switch (globalSettings.externalLinkTarget) {
case LinkTarget.NONE:
case LinkTarget.SELF:
case LinkTarget.BLANK:
case LinkTarget.PARENT:
case LinkTarget.TOP:
return globalSettings.externalLinkTarget;
}
warn('PDFJS.externalLinkTarget is invalid: ' +
globalSettings.externalLinkTarget);
// Reset the external link target, to suppress further warnings.
globalSettings.externalLinkTarget = LinkTarget.NONE;
return LinkTarget.NONE;
case 'externalLinkRel':
return globalSettings ? globalSettings.externalLinkRel : DEFAULT_LINK_REL;
case 'enableStats':
return !!(globalSettings && globalSettings.enableStats);
default:
throw new Error('Unknown default setting: ' + id);
}
}
function isExternalLinkTargetSet() {
var externalLinkTarget = getDefaultSetting('externalLinkTarget');
switch (externalLinkTarget) {
case LinkTarget.NONE:
return false;
case LinkTarget.SELF:
case LinkTarget.BLANK:
case LinkTarget.PARENT:
case LinkTarget.TOP:
return true;
}
}
class StatTimer {
constructor(enable = true) {
this.enabled = !!enable;
@ -483,7 +441,6 @@ class DummyStatTimer {
export {
RenderingCancelledException,
addLinkAttributes,
isExternalLinkTargetSet,
getFilenameFromUrl,
LinkTarget,
getDefaultSetting,

31
src/display/global.js
View File

@ -13,10 +13,6 @@
* limitations under the License.
*/
import {
addLinkAttributes, DEFAULT_LINK_REL, getFilenameFromUrl,
isExternalLinkTargetSet, isValidUrl, LinkTarget
} from './dom_utils';
import {
createBlob, createObjectURL, createPromiseCapability, getVerbosityLevel,
InvalidPDFException, isLittleEndian, MissingPDFException, OPS, PageViewport,
@ -24,6 +20,7 @@ import {
shadow, UnexpectedResponseException, UnknownErrorException,
UNSUPPORTED_FEATURES, Util, VERBOSITY_LEVELS
} from '../shared/util';
import { DEFAULT_LINK_REL, getFilenameFromUrl, LinkTarget } from './dom_utils';
import {
getDocument, LoopbackPort, PDFDataRangeTransport, PDFWorker
} from './api';
@ -42,11 +39,6 @@ if (!globalScope.PDFJS) {
}
var PDFJS = globalScope.PDFJS;
if (typeof PDFJSDev !== 'undefined') {
PDFJS.version = PDFJSDev.eval('BUNDLE_VERSION');
PDFJS.build = PDFJSDev.eval('BUNDLE_BUILD');
}
PDFJS.pdfBug = false;
if (PDFJS.verbosity !== undefined) {
@ -67,7 +59,6 @@ Object.defineProperty(PDFJS, 'verbosity', {
PDFJS.VERBOSITY_LEVELS = VERBOSITY_LEVELS;
PDFJS.OPS = OPS;
PDFJS.UNSUPPORTED_FEATURES = UNSUPPORTED_FEATURES;
PDFJS.isValidUrl = isValidUrl;
PDFJS.shadow = shadow;
PDFJS.createBlob = createBlob;
PDFJS.createObjectURL = function PDFJS_createObjectURL(data, contentType) {
@ -120,14 +111,6 @@ PDFJS.cMapPacked = PDFJS.cMapPacked === undefined ? false : PDFJS.cMapPacked;
PDFJS.disableFontFace = (PDFJS.disableFontFace === undefined ?
false : PDFJS.disableFontFace);
/**
* Path for image resources, mainly for annotation icons. Include trailing
* slash.
* @var {string}
*/
PDFJS.imageResourcesPath = (PDFJS.imageResourcesPath === undefined ?
'' : PDFJS.imageResourcesPath);
/**
* Path and filename of the worker file. Required when the worker is enabled
* in development mode. If unspecified in the production build, the worker
@ -192,16 +175,9 @@ PDFJS.postMessageTransfers = (PDFJS.postMessageTransfers === undefined ?
PDFJS.disableCreateObjectURL = (PDFJS.disableCreateObjectURL === undefined ?
false : PDFJS.disableCreateObjectURL);
/**
* Disables WebGL usage.
* @var {boolean}
*/
PDFJS.disableWebGL = (PDFJS.disableWebGL === undefined ?
true : PDFJS.disableWebGL);
/**
* Specifies the |target| attribute for external links.
* The constants from PDFJS.LinkTarget should be used:
* The constants from {LinkTarget} should be used:
* - NONE [default]
* - SELF
* - BLANK
@ -233,10 +209,7 @@ PDFJS.LoopbackPort = LoopbackPort;
PDFJS.PDFDataRangeTransport = PDFDataRangeTransport;
PDFJS.PDFWorker = PDFWorker;
PDFJS.LinkTarget = LinkTarget;
PDFJS.addLinkAttributes = addLinkAttributes;
PDFJS.getFilenameFromUrl = getFilenameFromUrl;
PDFJS.isExternalLinkTargetSet = isExternalLinkTargetSet;
PDFJS.AnnotationLayer = AnnotationLayer;

1
src/pdf.js
View File

@ -91,4 +91,5 @@ exports.createBlob = pdfjsSharedUtil.createBlob;
exports.RenderingCancelledException =
pdfjsDisplayDOMUtils.RenderingCancelledException;
exports.getFilenameFromUrl = pdfjsDisplayDOMUtils.getFilenameFromUrl;
exports.LinkTarget = pdfjsDisplayDOMUtils.LinkTarget;
exports.addLinkAttributes = pdfjsDisplayDOMUtils.addLinkAttributes;

35
src/shared/compatibility.js
View File

@ -26,12 +26,10 @@ if ((typeof PDFJSDev === 'undefined' ||
// users - https://github.com/mozilla/pdf.js/issues/9397
if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('CHROME')) {
var globalScope = require('./global_scope');
const globalScope = require('./global_scope');
const isNodeJS = require('./is_node');
var userAgent = (typeof navigator !== 'undefined' && navigator.userAgent) || '';
var isAndroid = /Android/.test(userAgent);
var isIOSChrome = userAgent.indexOf('CriOS') >= 0;
var isIE = userAgent.indexOf('Trident') >= 0;
var isIOS = /\b(iPad|iPhone|iPod)(?=;)/.test(userAgent);
@ -80,18 +78,6 @@ PDFJS.compatibilityChecked = true;
}
})();
// Checks if navigator.language is supported
// Support: IE<11
(function checkNavigatorLanguage() {
if (typeof navigator === 'undefined') {
return;
}
if ('language' in navigator) {
return;
}
PDFJS.locale = navigator.userLanguage || 'en-US';
})();
// Support: Safari 6.0+, iOS
(function checkRangeRequests() {
// Safari has issues with cached range requests see:
@ -103,25 +89,6 @@ PDFJS.compatibilityChecked = true;
}
})();
// Support: Android, iOS
(function checkCanvasSizeLimitation() {
if (isIOS || isAndroid) {
// 5MP
PDFJS.maxCanvasPixels = 5242880;
}
})();
// Disable fullscreen support for certain problematic configurations.
// Support: IE11+ (when embedded).
(function checkFullscreenSupport() {
if (!hasDOM) {
return;
}
if (isIE && window.parent !== window) {
PDFJS.disableFullscreen = true;
}
})();
// Provides document.currentScript support
// Support: IE, Chrome<29.
(function checkCurrentScript() {

10
test/driver.js
View File

@ -18,6 +18,7 @@
var WAITING_TIME = 100; // ms
var PDF_TO_CSS_UNITS = 96.0 / 72.0;
const IMAGE_RESOURCES_PATH = '/web/images/';
/**
* @class
@ -164,6 +165,7 @@ var rasterizeAnnotationLayer = (function rasterizeAnnotationLayerClosure() {
}
function rasterizeAnnotationLayer(ctx, viewport, annotations, page,
imageResourcesPath,
renderInteractiveForms) {
return new Promise(function (resolve) {
// Building SVG with size of the viewport.
@ -194,6 +196,7 @@ var rasterizeAnnotationLayer = (function rasterizeAnnotationLayerClosure() {
annotations,
page,
linkService: new PDFJS.SimpleLinkService(),
imageResourcesPath,
renderInteractiveForms,
};
PDFJS.AnnotationLayer.render(parameters);
@ -251,8 +254,7 @@ var Driver = (function DriverClosure() { // eslint-disable-line no-unused-vars
PDFJS.workerSrc = '../build/generic/build/pdf.worker.js';
PDFJS.cMapPacked = true;
PDFJS.cMapUrl = '../external/bcmaps/';
PDFJS.enableStats = true;
PDFJS.imageResourcesPath = '/web/images/';
PDFJS.pdfBug = true;
// Set the passed options
this.inflight = options.inflight;
@ -506,7 +508,9 @@ var Driver = (function DriverClosure() { // eslint-disable-line no-unused-vars
function(annotations) {
return rasterizeAnnotationLayer(annotationLayerContext,
viewport, annotations,
page, renderForms);
page,
IMAGE_RESOURCES_PATH,
renderForms);
});
} else {
annotationLayerCanvas = null;

38
test/unit/dom_utils_spec.js
View File

@ -13,11 +13,8 @@
* limitations under the License.
*/
import {
DOMSVGFactory, getFilenameFromUrl, isExternalLinkTargetSet, LinkTarget
} from '../../src/display/dom_utils';
import { DOMSVGFactory, getFilenameFromUrl } from '../../src/display/dom_utils';
import isNodeJS from '../../src/shared/is_node';
import { PDFJS } from '../../src/display/global';
describe('dom_utils', function() {
describe('DOMSVGFactory', function() {
@ -95,37 +92,4 @@ describe('dom_utils', function() {
expect(result).toEqual(expected);
});
});
describe('isExternalLinkTargetSet', function() {
var savedExternalLinkTarget;
beforeAll(function (done) {
savedExternalLinkTarget = PDFJS.externalLinkTarget;
done();
});
afterAll(function () {
PDFJS.externalLinkTarget = savedExternalLinkTarget;
});
it('handles the predefined LinkTargets', function() {
for (var key in LinkTarget) {
var linkTarget = LinkTarget[key];
PDFJS.externalLinkTarget = linkTarget;
expect(isExternalLinkTargetSet()).toEqual(!!linkTarget);
}
});
it('handles incorrect LinkTargets', function() {
var targets = [true, '', false, -1, '_blank', null];
for (var i = 0, ii = targets.length; i < ii; i++) {
var linkTarget = targets[i];
PDFJS.externalLinkTarget = linkTarget;
expect(isExternalLinkTargetSet()).toEqual(false);
}
});
});
});

13
web/annotation_layer_builder.js
View File

@ -21,6 +21,8 @@ import { SimpleLinkService } from './pdf_link_service';
* @typedef {Object} AnnotationLayerBuilderOptions
* @property {HTMLDivElement} pageDiv
* @property {PDFPage} pdfPage
* @property {string} imageResourcesPath - (optional) Path for image resources,
* mainly for annotation icons. Include trailing slash.
* @property {boolean} renderInteractiveForms
* @property {IPDFLinkService} linkService
* @property {DownloadManager} downloadManager
@ -32,11 +34,13 @@ class AnnotationLayerBuilder {
* @param {AnnotationLayerBuilderOptions} options
*/
constructor({ pageDiv, pdfPage, linkService, downloadManager,
renderInteractiveForms = false, l10n = NullL10n, }) {
imageResourcesPath = '', renderInteractiveForms = false,
l10n = NullL10n, }) {
this.pageDiv = pageDiv;
this.pdfPage = pdfPage;
this.linkService = linkService;
this.downloadManager = downloadManager;
this.imageResourcesPath = imageResourcesPath;
this.renderInteractiveForms = renderInteractiveForms;
this.l10n = l10n;
@ -59,6 +63,7 @@ class AnnotationLayerBuilder {
div: this.div,
annotations,
page: this.pdfPage,
imageResourcesPath: this.imageResourcesPath,
renderInteractiveForms: this.renderInteractiveForms,
linkService: this.linkService,
downloadManager: this.downloadManager,
@ -104,15 +109,19 @@ class DefaultAnnotationLayerFactory {
/**
* @param {HTMLDivElement} pageDiv
* @param {PDFPage} pdfPage
* @param {string} imageResourcesPath - (optional) Path for image resources,
* mainly for annotation icons. Include trailing slash.
* @param {boolean} renderInteractiveForms
* @param {IL10n} l10n
* @returns {AnnotationLayerBuilder}
*/
createAnnotationLayerBuilder(pageDiv, pdfPage, renderInteractiveForms = false,
createAnnotationLayerBuilder(pageDiv, pdfPage, imageResourcesPath = '',
renderInteractiveForms = false,
l10n = NullL10n) {
return new AnnotationLayerBuilder({
pageDiv,
pdfPage,
imageResourcesPath,
renderInteractiveForms,
linkService: new SimpleLinkService(),
l10n,

55
web/app.js
View File

@ -18,11 +18,11 @@ import {
animationStarted, DEFAULT_SCALE_VALUE, getPDFFileNameFromURL, isFileSchema,
isValidRotation, MAX_SCALE, MIN_SCALE, noContextMenuHandler,
normalizeWheelEventDelta, parseQueryString, PresentationModeState,
ProgressBar, RendererType
ProgressBar, RendererType, TextLayerMode
} from './ui_utils';
import {
build, createBlob, getDocument, getFilenameFromUrl, InvalidPDFException,
MissingPDFException, OPS, PDFJS, PDFWorker, shadow,
LinkTarget, MissingPDFException, OPS, PDFJS, PDFWorker, shadow,
UnexpectedResponseException, UNSUPPORTED_FEATURES, version
} from 'pdfjs-lib';
import { CursorTool, PDFCursorTools } from './pdf_cursor_tools';
@ -44,6 +44,7 @@ import { PDFThumbnailViewer } from './pdf_thumbnail_viewer';
import { PDFViewer } from './pdf_viewer';
import { SecondaryToolbar } from './secondary_toolbar';
import { Toolbar } from './toolbar';
import { viewerCompatibilityParams } from './viewer_compatibility';
import { ViewHistory } from './view_history';
const DEFAULT_SCALE_DELTA = 1.1;
@ -138,6 +139,7 @@ let PDFViewerApplication = {
isInitialViewSet: false,
downloadComplete: false,
viewerPrefs: {
enableWebGL: false,
sidebarViewOnLoad: SidebarView.NONE,
pdfBugEnabled: false,
showPreviousViewOnLoad: true,
@ -145,7 +147,7 @@ let PDFViewerApplication = {
disablePageMode: false,
disablePageLabels: false,
renderer: 'canvas',
enhanceTextSelection: false,
textLayerMode: TextLayerMode.ENABLE,
renderInteractiveForms: false,
enablePrintAutoRotate: false,
},
@ -183,10 +185,11 @@ let PDFViewerApplication = {
this.eventBus.dispatch('localized');
});
if (this.isViewerEmbedded && !PDFJS.isExternalLinkTargetSet()) {
if (this.isViewerEmbedded &&
PDFJS.externalLinkTarget === LinkTarget.NONE) {
// Prevent external links from "replacing" the viewer,
// when it's embedded in e.g. an iframe or an object.
PDFJS.externalLinkTarget = PDFJS.LinkTarget.TOP;
PDFJS.externalLinkTarget = LinkTarget.TOP;
}
this.initialized = true;
@ -201,7 +204,7 @@ let PDFViewerApplication = {
return Promise.all([
preferences.get('enableWebGL').then(function resolved(value) {
PDFJS.disableWebGL = !value;
viewerPrefs['enableWebGL'] = value;
}),
preferences.get('sidebarViewOnLoad').then(function resolved(value) {
viewerPrefs['sidebarViewOnLoad'] = value;
@ -215,14 +218,11 @@ let PDFViewerApplication = {
preferences.get('defaultZoomValue').then(function resolved(value) {
viewerPrefs['defaultZoomValue'] = value;
}),
preferences.get('enhanceTextSelection').then(function resolved(value) {
viewerPrefs['enhanceTextSelection'] = value;
}),
preferences.get('disableTextLayer').then(function resolved(value) {
if (PDFJS.disableTextLayer === true) {
preferences.get('textLayerMode').then(function resolved(value) {
if (viewerPrefs['textLayerMode'] === TextLayerMode.DISABLE) {
return;
}
PDFJS.disableTextLayer = value;
viewerPrefs['textLayerMode'] = value;
}),
preferences.get('disableRange').then(function resolved(value) {
if (PDFJS.disableRange === true) {
@ -249,7 +249,7 @@ let PDFViewerApplication = {
PDFJS.useOnlyCssZoom = value;
}),
preferences.get('externalLinkTarget').then(function resolved(value) {
if (PDFJS.isExternalLinkTargetSet()) {
if (PDFJS.externalLinkTarget !== LinkTarget.NONE) {
return;
}
PDFJS.externalLinkTarget = value;
@ -305,7 +305,7 @@ let PDFViewerApplication = {
PDFJS.disableHistory = (hashParams['disablehistory'] === 'true');
}
if ('webgl' in hashParams) {
PDFJS.disableWebGL = (hashParams['webgl'] !== 'true');
viewerPrefs['enableWebGL'] = (hashParams['webgl'] === 'true');
}
if ('useonlycsszoom' in hashParams) {
PDFJS.useOnlyCssZoom = (hashParams['useonlycsszoom'] === 'true');
@ -321,7 +321,7 @@ let PDFViewerApplication = {
if ('textlayer' in hashParams) {
switch (hashParams['textlayer']) {
case 'off':
PDFJS.disableTextLayer = true;
viewerPrefs['textLayerMode'] = TextLayerMode.DISABLE;
break;
case 'visible':
case 'shadow':
@ -333,8 +333,7 @@ let PDFViewerApplication = {
}
if ('pdfbug' in hashParams) {
PDFJS.pdfBug = true;
let pdfBug = hashParams['pdfbug'];
let enabled = pdfBug.split(',');
let enabled = hashParams['pdfbug'].split(',');
waitOn.push(loadAndEnablePDFBug(enabled));
}
// Locale can be changed only when special debugging flags is present in
@ -353,7 +352,9 @@ let PDFViewerApplication = {
* @private
*/
_initializeL10n() {
this.l10n = this.externalServices.createL10n();
this.l10n = this.externalServices.createL10n({
locale: PDFJS.locale,
});
return this.l10n.getDirection().then((dir) => {
document.getElementsByTagName('html')[0].dir = dir;
});
@ -377,6 +378,8 @@ let PDFViewerApplication = {
let pdfLinkService = new PDFLinkService({
eventBus,
externalLinkTarget: PDFJS.externalLinkTarget,
externalLinkRel: PDFJS.externalLinkRel,
});
this.pdfLinkService = pdfLinkService;
@ -393,10 +396,14 @@ let PDFViewerApplication = {
linkService: pdfLinkService,
downloadManager,
renderer: viewerPrefs['renderer'],
enableWebGL: viewerPrefs['enableWebGL'],
l10n: this.l10n,
enhanceTextSelection: viewerPrefs['enhanceTextSelection'],
textLayerMode: viewerPrefs['textLayerMode'],
imageResourcesPath: PDFJS.imageResourcesPath,
renderInteractiveForms: viewerPrefs['renderInteractiveForms'],
enablePrintAutoRotate: viewerPrefs['enablePrintAutoRotate'],
useOnlyCssZoom: PDFJS.useOnlyCssZoom,
maxCanvasPixels: PDFJS.maxCanvasPixels,
});
pdfRenderingQueue.setViewer(this.pdfViewer);
pdfLinkService.setViewer(this.pdfViewer);
@ -561,7 +568,7 @@ let PDFViewerApplication = {
support = false;
}
}
if (support && PDFJS.disableFullscreen === true) {
if (support && viewerCompatibilityParams['disableFullscreen'] === true) {
support = false;
}
@ -1168,7 +1175,7 @@ let PDFViewerApplication = {
info.PDFFormatVersion + ' ' + (info.Producer || '-').trim() +
' / ' + (info.Creator || '-').trim() + ']' +
' (PDF.js: ' + (version || '-') +
(!PDFJS.disableWebGL ? ' [WebGL]' : '') + ')');
(this.viewerPrefs['enableWebGL'] ? ' [WebGL]' : '') + ')');
let pdfTitle;
if (metadata && metadata.has('dc:title')) {
@ -1550,7 +1557,6 @@ function loadAndEnablePDFBug(enabledTabs) {
script.onload = function () {
PDFBug.enable(enabledTabs);
PDFBug.init({
PDFJS,
OPS,
}, appConfig.mainContainer);
resolve();
@ -1715,8 +1721,7 @@ function webViewerPageRendered(evt) {
thumbnailView.setImage(pageView);
}
if (PDFJS.pdfBug && typeof Stats !== 'undefined' && Stats.enabled &&
pageView.stats) {
if (typeof Stats !== 'undefined' && Stats.enabled && pageView.stats) {
Stats.add(pageNumber, pageView.stats);
}
@ -2005,7 +2010,7 @@ function webViewerPageChanging(evt) {
}
// we need to update stats
if (PDFJS.pdfBug && typeof Stats !== 'undefined' && Stats.enabled) {
if (typeof Stats !== 'undefined' && Stats.enabled) {
let pageView = PDFViewerApplication.pdfViewer.getPageView(page - 1);
if (pageView && pageView.stats) {
Stats.add(page, pageView.stats);

39
web/base_viewer.js
View File

@ -17,7 +17,7 @@ import { createPromiseCapability, PDFJS } from 'pdfjs-lib';
import {
CSS_UNITS, DEFAULT_SCALE, DEFAULT_SCALE_VALUE, isValidRotation,
MAX_AUTO_SCALE, NullL10n, PresentationModeState, RendererType,
SCROLLBAR_PADDING, UNKNOWN_SCALE, VERTICAL_PADDING, watchScroll
SCROLLBAR_PADDING, TextLayerMode, UNKNOWN_SCALE, VERTICAL_PADDING, watchScroll
} from './ui_utils';
import { PDFRenderingQueue, RenderingStates } from './pdf_rendering_queue';
import { AnnotationLayerBuilder } from './annotation_layer_builder';
@ -39,15 +39,26 @@ const DEFAULT_CACHE_SIZE = 10;
* @property {PDFRenderingQueue} renderingQueue - (optional) The rendering
* queue object.
* @property {boolean} removePageBorders - (optional) Removes the border shadow
* around the pages. The default is false.
* @property {boolean} enhanceTextSelection - (optional) Enables the improved
* text selection behaviour. The default is `false`.
* around the pages. The default value is `false`.
* @property {number} textLayerMode - (optional) Controls if the text layer used
* for selection and searching is created, and if the improved text selection
* behaviour is enabled. The constants from {TextLayerMode} should be used.
* The default value is `TextLayerMode.ENABLE`.
* @property {string} imageResourcesPath - (optional) Path for image resources,
* mainly for annotation icons. Include trailing slash.
* @property {boolean} renderInteractiveForms - (optional) Enables rendering of
* interactive form elements. The default is `false`.
* @property {boolean} enablePrintAutoRotate - (optional) Enables automatic
* rotation of pages whose orientation differ from the first page upon
* printing. The default is `false`.
* @property {string} renderer - 'canvas' or 'svg'. The default is 'canvas'.
* @property {boolean} enableWebGL - (optional) Enables WebGL accelerated
* rendering for some operations. The default value is `false`.
* @property {boolean} useOnlyCssZoom - (optional) Enables CSS only zooming.
* The default value is `false`.
* @property {number} maxCanvasPixels - (optional) The maximum supported canvas
* size in total pixels, i.e. width * height. Use -1 for no limit.
* The default value is 4096 * 4096 (16 mega-pixels).
* @property {IL10n} l10n - Localization service.
*/
@ -107,10 +118,16 @@ class BaseViewer {
this.linkService = options.linkService || new SimpleLinkService();
this.downloadManager = options.downloadManager || null;
this.removePageBorders = options.removePageBorders || false;
this.textLayerMode = Number.isInteger(options.textLayerMode) ?
options.textLayerMode : TextLayerMode.ENABLE;
this.enhanceTextSelection = options.enhanceTextSelection || false;
this.imageResourcesPath = options.imageResourcesPath || '';
this.renderInteractiveForms = options.renderInteractiveForms || false;
this.enablePrintAutoRotate = options.enablePrintAutoRotate || false;
this.renderer = options.renderer || RendererType.CANVAS;
this.enableWebGL = options.enableWebGL || false;
this.useOnlyCssZoom = options.useOnlyCssZoom || false;
this.maxCanvasPixels = options.maxCanvasPixels;
this.l10n = options.l10n || NullL10n;
this.defaultRenderingQueue = !options.renderingQueue;
@ -362,7 +379,7 @@ class BaseViewer {
let viewport = pdfPage.getViewport(scale * CSS_UNITS);
for (let pageNum = 1; pageNum <= pagesCount; ++pageNum) {
let textLayerFactory = null;
if (!PDFJS.disableTextLayer) {
if (this.textLayerMode !== TextLayerMode.DISABLE) {
textLayerFactory = this;
}
let pageView = new PDFPageView({
@ -373,10 +390,14 @@ class BaseViewer {
defaultViewport: viewport.clone(),
renderingQueue: this.renderingQueue,
textLayerFactory,
textLayerMode: this.textLayerMode,
annotationLayerFactory: this,
enhanceTextSelection: this.enhanceTextSelection,
imageResourcesPath: this.imageResourcesPath,
renderInteractiveForms: this.renderInteractiveForms,
renderer: this.renderer,
enableWebGL: this.enableWebGL,
useOnlyCssZoom: this.useOnlyCssZoom,
maxCanvasPixels: this.maxCanvasPixels,
l10n: this.l10n,
});
bindOnAfterAndBeforeDraw(pageView);
@ -872,15 +893,19 @@ class BaseViewer {
/**
* @param {HTMLDivElement} pageDiv
* @param {PDFPage} pdfPage
* @param {string} imageResourcesPath - (optional) Path for image resources,
* mainly for annotation icons. Include trailing slash.
* @param {boolean} renderInteractiveForms
* @param {IL10n} l10n
* @returns {AnnotationLayerBuilder}
*/
createAnnotationLayerBuilder(pageDiv, pdfPage, renderInteractiveForms = false,
createAnnotationLayerBuilder(pageDiv, pdfPage, imageResourcesPath = '',
renderInteractiveForms = false,
l10n = NullL10n) {
return new AnnotationLayerBuilder({
pageDiv,
pdfPage,
imageResourcesPath,
renderInteractiveForms,
linkService: this.linkService,
downloadManager: this.downloadManager,

2
web/chromecom.js
View File

@ -342,7 +342,7 @@ ChromeExternalServices.createDownloadManager = function() {
ChromeExternalServices.createPreferences = function() {
return new ChromePreferences();
};
ChromeExternalServices.createL10n = function() {
ChromeExternalServices.createL10n = function(options) {
return new GenericL10n(navigator.language);
};
PDFViewerApplication.externalServices = ChromeExternalServices;

1
web/debugger.js
View File

@ -462,7 +462,6 @@ var Stats = (function Stats() {
manager: null,
init(pdfjsLib) {
this.panel.setAttribute('style', 'padding: 5px;');
pdfjsLib.PDFJS.enableStats = true;
},
enabled: false,
active: false,

3
web/default_preferences.json
View File

@ -9,10 +9,9 @@
"disableStream": false,
"disableAutoFetch": false,
"disableFontFace": false,
"disableTextLayer": false,
"textLayerMode": 1,
"useOnlyCssZoom": false,
"externalLinkTarget": 0,
"enhanceTextSelection": false,
"renderer": "canvas",
"renderInteractiveForms": false,
"enablePrintAutoRotate": false,

2
web/firefoxcom.js
View File

@ -264,7 +264,7 @@ PDFViewerApplication.externalServices = {
return new FirefoxPreferences();
},
createL10n() {
createL10n(options) {
let mozL10n = document.mozL10n;
// TODO refactor mozL10n.setExternalLocalizerServices
return new MozL10n(mozL10n);

5
web/genericcom.js
View File

@ -17,7 +17,6 @@ import { DefaultExternalServices, PDFViewerApplication } from './app';
import { BasePreferences } from './preferences';
import { DownloadManager } from './download_manager';
import { GenericL10n } from './genericl10n';
import { PDFJS } from 'pdfjs-lib';
if (typeof PDFJSDev !== 'undefined' && !PDFJSDev.test('GENERIC')) {
throw new Error('Module "pdfjs-web/genericcom" shall not be used outside ' +
@ -49,8 +48,8 @@ GenericExternalServices.createDownloadManager = function() {
GenericExternalServices.createPreferences = function() {
return new GenericPreferences();
};
GenericExternalServices.createL10n = function () {
return new GenericL10n(PDFJS.locale);
GenericExternalServices.createL10n = function(options) {
return new GenericL10n(options.locale);
};
PDFViewerApplication.externalServices = GenericExternalServices;

6
web/interfaces.js
View File

@ -145,11 +145,13 @@ class IPDFAnnotationLayerFactory {
/**
* @param {HTMLDivElement} pageDiv
* @param {PDFPage} pdfPage
* @param {IL10n} l10n
* @param {string} imageResourcesPath - (optional) Path for image resources,
* mainly for annotation icons. Include trailing slash.
* @param {boolean} renderInteractiveForms
* @param {IL10n} l10n
* @returns {AnnotationLayerBuilder}
*/
createAnnotationLayerBuilder(pageDiv, pdfPage,
createAnnotationLayerBuilder(pageDiv, pdfPage, imageResourcesPath = '',
renderInteractiveForms = false,
l10n = undefined) {}
}

16
web/pdf_link_service.js
View File

@ -19,6 +19,11 @@ import { parseQueryString } from './ui_utils';
/**
* @typedef {Object} PDFLinkServiceOptions
* @property {EventBus} eventBus - The application event bus.
* @property {number} externalLinkTarget - (optional) Specifies the `target`
* attribute for external links. Must use one of the values from {LinkTarget}.
* Defaults to using no target.
* @property {string} externalLinkRel - (optional) Specifies the `rel` attribute
* for external links. Defaults to stripping the referrer.
*/
/**
@ -30,8 +35,12 @@ class PDFLinkService {
/**
* @param {PDFLinkServiceOptions} options
*/
constructor({ eventBus, } = {}) {
constructor({ eventBus, externalLinkTarget = null,
externalLinkRel = null, } = {}) {
this.eventBus = eventBus || getGlobalEventBus();
this.externalLinkTarget = externalLinkTarget;
this.externalLinkRel = externalLinkRel;
this.baseUrl = null;
this.pdfDocument = null;
this.pdfViewer = null;
@ -409,6 +418,11 @@ function isValidExplicitDestination(dest) {
}
class SimpleLinkService {
constructor() {
this.externalLinkTarget = null;
this.externalLinkRel = null;
}
/**
* @returns {number}
*/

28
web/pdf_outline_viewer.js
View File

@ -13,9 +13,7 @@
* limitations under the License.
*/
import {
addLinkAttributes, PDFJS, removeNullCharacters
} from 'pdfjs-lib';
import { addLinkAttributes, LinkTarget, removeNullCharacters } from 'pdfjs-lib';
const DEFAULT_TITLE = '\u2013';
@ -68,20 +66,22 @@ class PDFOutlineViewer {
/**
* @private
*/
_bindLink(element, item) {
if (item.url) {
_bindLink(element, { url, newWindow, dest, }) {
let { linkService, } = this;
if (url) {
addLinkAttributes(element, {
url: item.url,
target: (item.newWindow ? PDFJS.LinkTarget.BLANK : undefined),
url,
target: (newWindow ? LinkTarget.BLANK : linkService.externalLinkTarget),
rel: linkService.externalLinkRel,
});
return;
}
let destination = item.dest;
element.href = this.linkService.getDestinationHash(destination);
element.href = this.linkService.getDestinationHash(dest);
element.onclick = () => {
if (destination) {
this.linkService.navigateTo(destination);
if (dest) {
this.linkService.navigateTo(dest);
}
return false;
};
@ -90,12 +90,12 @@ class PDFOutlineViewer {
/**
* @private
*/
_setStyles(element, item) {
_setStyles(element, { bold, italic, }) {
let styleStr = '';
if (item.bold) {
if (bold) {
styleStr += 'font-weight: bold;';
}
if (item.italic) {
if (italic) {
styleStr += 'font-style: italic;';
}

48
web/pdf_page_view.js
View File

@ -15,13 +15,14 @@
import {
approximateFraction, CSS_UNITS, DEFAULT_SCALE, getOutputScale, NullL10n,
RendererType, roundToDivide
RendererType, roundToDivide, TextLayerMode
} from './ui_utils';
import {
createPromiseCapability, PDFJS, RenderingCancelledException, SVGGraphics
createPromiseCapability, RenderingCancelledException, SVGGraphics
} from 'pdfjs-lib';
import { getGlobalEventBus } from './dom_events';
import { RenderingStates } from './pdf_rendering_queue';
import { viewerCompatibilityParams } from './viewer_compatibility';
/**
* @typedef {Object} PDFPageViewOptions
@ -32,15 +33,28 @@ import { RenderingStates } from './pdf_rendering_queue';
* @property {PageViewport} defaultViewport - The page viewport.
* @property {PDFRenderingQueue} renderingQueue - The rendering queue object.
* @property {IPDFTextLayerFactory} textLayerFactory
* @property {number} textLayerMode - (optional) Controls if the text layer used
* for selection and searching is created, and if the improved text selection
* behaviour is enabled. The constants from {TextLayerMode} should be used.
* The default value is `TextLayerMode.ENABLE`.
* @property {IPDFAnnotationLayerFactory} annotationLayerFactory
* @property {boolean} enhanceTextSelection - Turns on the text selection
* enhancement. The default is `false`.
* @property {string} imageResourcesPath - (optional) Path for image resources,
* mainly for annotation icons. Include trailing slash.
* @property {boolean} renderInteractiveForms - Turns on rendering of
* interactive form elements. The default is `false`.
* @property {string} renderer - 'canvas' or 'svg'. The default is 'canvas'.
* @property {boolean} enableWebGL - (optional) Enables WebGL accelerated
* rendering for some operations. The default value is `false`.
* @property {boolean} useOnlyCssZoom - (optional) Enables CSS only zooming.
* The default value is `false`.
* @property {number} maxCanvasPixels - (optional) The maximum supported canvas
* size in total pixels, i.e. width * height. Use -1 for no limit.
* The default value is 4096 * 4096 (16 mega-pixels).
* @property {IL10n} l10n - Localization service.
*/
const MAX_CANVAS_PIXELS = viewerCompatibilityParams.maxCanvasPixels || 16777216;
/**
* @implements {IRenderableView}
*/
@ -62,14 +76,19 @@ class PDFPageView {
this.viewport = defaultViewport;
this.pdfPageRotate = defaultViewport.rotation;
this.hasRestrictedScaling = false;
this.enhanceTextSelection = options.enhanceTextSelection || false;
this.textLayerMode = Number.isInteger(options.textLayerMode) ?
options.textLayerMode : TextLayerMode.ENABLE;
this.imageResourcesPath = options.imageResourcesPath || '';
this.renderInteractiveForms = options.renderInteractiveForms || false;
this.useOnlyCssZoom = options.useOnlyCssZoom || false;
this.maxCanvasPixels = options.maxCanvasPixels || MAX_CANVAS_PIXELS;
this.eventBus = options.eventBus || getGlobalEventBus();
this.renderingQueue = options.renderingQueue;
this.textLayerFactory = options.textLayerFactory;
this.annotationLayerFactory = options.annotationLayerFactory;
this.renderer = options.renderer || RendererType.CANVAS;
this.enableWebGL = options.enableWebGL || false;
this.l10n = options.l10n || NullL10n;
this.paintTask = null;
@ -208,17 +227,17 @@ class PDFPageView {
}
let isScalingRestricted = false;
if (this.canvas && PDFJS.maxCanvasPixels > 0) {
if (this.canvas && this.maxCanvasPixels > 0) {
let outputScale = this.outputScale;
if (((Math.floor(this.viewport.width) * outputScale.sx) | 0) *
((Math.floor(this.viewport.height) * outputScale.sy) | 0) >
PDFJS.maxCanvasPixels) {
this.maxCanvasPixels) {
isScalingRestricted = true;
}
}
if (this.canvas) {
if (PDFJS.useOnlyCssZoom ||
if (this.useOnlyCssZoom ||
(this.hasRestrictedScaling && isScalingRestricted)) {
this.cssTransform(this.canvas, true);
@ -371,7 +390,7 @@ class PDFPageView {
}
let textLayer = null;
if (this.textLayerFactory) {
if (this.textLayerMode !== TextLayerMode.DISABLE && this.textLayerFactory) {
let textLayerDiv = document.createElement('div');
textLayerDiv.className = 'textLayer';
textLayerDiv.style.width = canvasWrapper.style.width;
@ -385,7 +404,7 @@ class PDFPageView {
textLayer = this.textLayerFactory.
createTextLayerBuilder(textLayerDiv, this.id - 1, this.viewport,
this.enhanceTextSelection);
this.textLayerMode === TextLayerMode.ENABLE_ENHANCE);
}
this.textLayer = textLayer;
@ -465,7 +484,7 @@ class PDFPageView {
if (this.annotationLayerFactory) {
if (!this.annotationLayer) {
this.annotationLayer = this.annotationLayerFactory.
createAnnotationLayerBuilder(div, pdfPage,
createAnnotationLayerBuilder(div, pdfPage, this.imageResourcesPath,
this.renderInteractiveForms, this.l10n);
}
this.annotationLayer.render(this.viewport, 'display');
@ -517,7 +536,7 @@ class PDFPageView {
let outputScale = getOutputScale(ctx);
this.outputScale = outputScale;
if (PDFJS.useOnlyCssZoom) {
if (this.useOnlyCssZoom) {
let actualSizeViewport = viewport.clone({ scale: CSS_UNITS, });
// Use a scale that makes the canvas have the originally intended size
// of the page.
@ -526,9 +545,9 @@ class PDFPageView {
outputScale.scaled = true;
}
if (PDFJS.maxCanvasPixels > 0) {
if (this.maxCanvasPixels > 0) {
let pixelsInViewport = viewport.width * viewport.height;
let maxScale = Math.sqrt(PDFJS.maxCanvasPixels / pixelsInViewport);
let maxScale = Math.sqrt(this.maxCanvasPixels / pixelsInViewport);
if (outputScale.sx > maxScale || outputScale.sy > maxScale) {
outputScale.sx = maxScale;
outputScale.sy = maxScale;
@ -555,6 +574,7 @@ class PDFPageView {
canvasContext: ctx,
transform,
viewport: this.viewport,
enableWebGL: this.enableWebGL,
renderInteractiveForms: this.renderInteractiveForms,
};
let renderTask = this.pdfPage.render(renderContext);

24
web/ui_utils.js
View File

@ -37,6 +37,12 @@ const RendererType = {
SVG: 'svg',
};
const TextLayerMode = {
DISABLE: 0,
ENABLE: 1,
ENABLE_ENHANCE: 2,
};
// Replaces {{arguments}} with their values.
function formatL10nValue(text, args) {
if (!args) {
@ -65,14 +71,6 @@ let NullL10n = {
},
};
/**
* Disables fullscreen support, and by extension Presentation Mode,
* in browsers which support the fullscreen API.
* @var {boolean}
*/
PDFJS.disableFullscreen = (PDFJS.disableFullscreen === undefined ?
false : PDFJS.disableFullscreen);
/**
* Enables CSS only zooming.
* @var {boolean}
@ -95,13 +93,6 @@ PDFJS.maxCanvasPixels = (PDFJS.maxCanvasPixels === undefined ?
PDFJS.disableHistory = (PDFJS.disableHistory === undefined ?
false : PDFJS.disableHistory);
/**
* Disables creation of the text layer that used for text selection and search.
* @var {boolean}
*/
PDFJS.disableTextLayer = (PDFJS.disableTextLayer === undefined ?
false : PDFJS.disableTextLayer);
if (typeof PDFJSDev === 'undefined' ||
!PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
/**
@ -110,7 +101,7 @@ if (typeof PDFJSDev === 'undefined' ||
*/
PDFJS.locale =
(PDFJS.locale === undefined && typeof navigator !== 'undefined' ?
navigator.language : PDFJS.locale);
navigator.language : PDFJS.locale) || 'en-US';
}
/**
@ -677,6 +668,7 @@ export {
cloneObj,
PresentationModeState,
RendererType,
TextLayerMode,
mozL10n,
NullL10n,
EventBus,

44
web/viewer_compatibility.js Normal file
View File

@ -0,0 +1,44 @@
/* Copyright 2018 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
let compatibilityParams = Object.create(null);
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
const userAgent =
(typeof navigator !== 'undefined' && navigator.userAgent) || '';
const isAndroid = /Android/.test(userAgent);
const isIE = /Trident/.test(userAgent);
const isIOS = /\b(iPad|iPhone|iPod)(?=;)/.test(userAgent);
// Disable fullscreen support for certain problematic configurations.
// Support: IE11+ (when embedded).
(function checkFullscreenSupport() {
if (isIE && window.parent !== window) {
compatibilityParams.disableFullscreen = true;
}
})();
// Limit canvas size to 5 mega-pixels on mobile.
// Support: Android, iOS
(function checkCanvasSizeLimitation() {
if (isIOS || isAndroid) {
compatibilityParams.maxCanvasPixels = 5242880;
}
})();
}
const viewerCompatibilityParams = Object.freeze(compatibilityParams);
export {
viewerCompatibilityParams,
};