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7952 lines
254 KiB
7952 lines
254 KiB
/* 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 PDFJS, PDFBug, FirefoxCom, Stats, ProgressBar,
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DownloadManager, getFileName, getPDFFileNameFromURL,
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PDFHistory, Preferences, SidebarView, ViewHistory, Stats,
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PDFThumbnailViewer, URL, noContextMenuHandler, SecondaryToolbar,
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PasswordPrompt, PDFPresentationMode, PDFDocumentProperties, HandTool,
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Promise, PDFLinkService, PDFOutlineView, PDFAttachmentView,
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OverlayManager, PDFFindController, PDFFindBar, PDFViewer,
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PDFRenderingQueue, PresentationModeState, parseQueryString,
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RenderingStates, UNKNOWN_SCALE, DEFAULT_SCALE_VALUE,
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IGNORE_CURRENT_POSITION_ON_ZOOM: true */
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'use strict';
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var DEFAULT_URL = 'compressed.tracemonkey-pldi-09.pdf';
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var DEFAULT_SCALE_DELTA = 1.1;
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var MIN_SCALE = 0.25;
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var MAX_SCALE = 10.0;
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var SCALE_SELECT_CONTAINER_PADDING = 8;
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var SCALE_SELECT_PADDING = 22;
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var PAGE_NUMBER_LOADING_INDICATOR = 'visiblePageIsLoading';
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var DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT = 5000;
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function configure(PDFJS) {
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PDFJS.imageResourcesPath = './images/';
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PDFJS.workerSrc = '../build/pdf.worker.js';
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}
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var CSS_UNITS = 96.0 / 72.0;
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var DEFAULT_SCALE_VALUE = 'auto';
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var DEFAULT_SCALE = 1.0;
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var UNKNOWN_SCALE = 0;
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var MAX_AUTO_SCALE = 1.25;
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var SCROLLBAR_PADDING = 40;
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var VERTICAL_PADDING = 5;
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function getFileName(url) {
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var anchor = url.indexOf('#');
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var query = url.indexOf('?');
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var end = Math.min(
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anchor > 0 ? anchor : url.length,
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query > 0 ? query : url.length);
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return url.substring(url.lastIndexOf('/', end) + 1, end);
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}
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/**
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* Returns scale factor for the canvas. It makes sense for the HiDPI displays.
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* @return {Object} The object with horizontal (sx) and vertical (sy)
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scales. The scaled property is set to false if scaling is
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not required, true otherwise.
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*/
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function getOutputScale(ctx) {
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var devicePixelRatio = window.devicePixelRatio || 1;
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var backingStoreRatio = ctx.webkitBackingStorePixelRatio ||
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ctx.mozBackingStorePixelRatio ||
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ctx.msBackingStorePixelRatio ||
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ctx.oBackingStorePixelRatio ||
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ctx.backingStorePixelRatio || 1;
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var pixelRatio = devicePixelRatio / backingStoreRatio;
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return {
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sx: pixelRatio,
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sy: pixelRatio,
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scaled: pixelRatio !== 1
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};
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}
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/**
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* Scrolls specified element into view of its parent.
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* @param {Object} element - The element to be visible.
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* @param {Object} spot - An object with optional top and left properties,
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* specifying the offset from the top left edge.
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* @param {boolean} skipOverflowHiddenElements - Ignore elements that have
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* the CSS rule `overflow: hidden;` set. The default is false.
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*/
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function scrollIntoView(element, spot, skipOverflowHiddenElements) {
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// Assuming offsetParent is available (it's not available when viewer is in
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// hidden iframe or object). We have to scroll: if the offsetParent is not set
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// producing the error. See also animationStartedClosure.
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var parent = element.offsetParent;
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if (!parent) {
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console.error('offsetParent is not set -- cannot scroll');
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return;
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}
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var checkOverflow = skipOverflowHiddenElements || false;
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var offsetY = element.offsetTop + element.clientTop;
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var offsetX = element.offsetLeft + element.clientLeft;
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while (parent.clientHeight === parent.scrollHeight ||
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(checkOverflow && getComputedStyle(parent).overflow === 'hidden')) {
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if (parent.dataset._scaleY) {
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offsetY /= parent.dataset._scaleY;
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offsetX /= parent.dataset._scaleX;
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}
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offsetY += parent.offsetTop;
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offsetX += parent.offsetLeft;
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parent = parent.offsetParent;
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if (!parent) {
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return; // no need to scroll
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}
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}
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if (spot) {
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if (spot.top !== undefined) {
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offsetY += spot.top;
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}
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if (spot.left !== undefined) {
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offsetX += spot.left;
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parent.scrollLeft = offsetX;
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}
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}
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parent.scrollTop = offsetY;
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}
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/**
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* Helper function to start monitoring the scroll event and converting them into
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* PDF.js friendly one: with scroll debounce and scroll direction.
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*/
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function watchScroll(viewAreaElement, callback) {
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var debounceScroll = function debounceScroll(evt) {
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if (rAF) {
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return;
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}
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// schedule an invocation of scroll for next animation frame.
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rAF = window.requestAnimationFrame(function viewAreaElementScrolled() {
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rAF = null;
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var currentY = viewAreaElement.scrollTop;
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var lastY = state.lastY;
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if (currentY !== lastY) {
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state.down = currentY > lastY;
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}
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state.lastY = currentY;
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callback(state);
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});
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};
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var state = {
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down: true,
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lastY: viewAreaElement.scrollTop,
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_eventHandler: debounceScroll
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};
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var rAF = null;
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viewAreaElement.addEventListener('scroll', debounceScroll, true);
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return state;
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}
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/**
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* Helper function to parse query string (e.g. ?param1=value&parm2=...).
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*/
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function parseQueryString(query) {
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var parts = query.split('&');
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var params = {};
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for (var i = 0, ii = parts.length; i < ii; ++i) {
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var param = parts[i].split('=');
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var key = param[0].toLowerCase();
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var value = param.length > 1 ? param[1] : null;
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params[decodeURIComponent(key)] = decodeURIComponent(value);
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}
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return params;
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}
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/**
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* Use binary search to find the index of the first item in a given array which
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* passes a given condition. The items are expected to be sorted in the sense
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* that if the condition is true for one item in the array, then it is also true
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* for all following items.
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*
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* @returns {Number} Index of the first array element to pass the test,
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* or |items.length| if no such element exists.
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*/
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function binarySearchFirstItem(items, condition) {
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var minIndex = 0;
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var maxIndex = items.length - 1;
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if (items.length === 0 || !condition(items[maxIndex])) {
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return items.length;
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}
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if (condition(items[minIndex])) {
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return minIndex;
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}
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while (minIndex < maxIndex) {
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var currentIndex = (minIndex + maxIndex) >> 1;
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var currentItem = items[currentIndex];
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if (condition(currentItem)) {
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maxIndex = currentIndex;
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} else {
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minIndex = currentIndex + 1;
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}
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}
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return minIndex; /* === maxIndex */
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}
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/**
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* Approximates float number as a fraction using Farey sequence (max order
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* of 8).
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* @param {number} x - Positive float number.
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* @returns {Array} Estimated fraction: the first array item is a numerator,
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* the second one is a denominator.
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*/
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function approximateFraction(x) {
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// Fast paths for int numbers or their inversions.
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if (Math.floor(x) === x) {
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return [x, 1];
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}
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var xinv = 1 / x;
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var limit = 8;
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if (xinv > limit) {
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return [1, limit];
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} else if (Math.floor(xinv) === xinv) {
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return [1, xinv];
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}
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var x_ = x > 1 ? xinv : x;
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// a/b and c/d are neighbours in Farey sequence.
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var a = 0, b = 1, c = 1, d = 1;
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// Limiting search to order 8.
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while (true) {
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// Generating next term in sequence (order of q).
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var p = a + c, q = b + d;
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if (q > limit) {
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break;
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}
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if (x_ <= p / q) {
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c = p; d = q;
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} else {
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a = p; b = q;
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}
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}
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// Select closest of the neighbours to x.
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if (x_ - a / b < c / d - x_) {
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return x_ === x ? [a, b] : [b, a];
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} else {
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return x_ === x ? [c, d] : [d, c];
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}
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}
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function roundToDivide(x, div) {
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var r = x % div;
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return r === 0 ? x : Math.round(x - r + div);
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}
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/**
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* Generic helper to find out what elements are visible within a scroll pane.
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*/
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function getVisibleElements(scrollEl, views, sortByVisibility) {
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var top = scrollEl.scrollTop, bottom = top + scrollEl.clientHeight;
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var left = scrollEl.scrollLeft, right = left + scrollEl.clientWidth;
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function isElementBottomBelowViewTop(view) {
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var element = view.div;
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var elementBottom =
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element.offsetTop + element.clientTop + element.clientHeight;
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return elementBottom > top;
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}
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var visible = [], view, element;
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var currentHeight, viewHeight, hiddenHeight, percentHeight;
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var currentWidth, viewWidth;
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var firstVisibleElementInd = (views.length === 0) ? 0 :
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binarySearchFirstItem(views, isElementBottomBelowViewTop);
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for (var i = firstVisibleElementInd, ii = views.length; i < ii; i++) {
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view = views[i];
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element = view.div;
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currentHeight = element.offsetTop + element.clientTop;
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viewHeight = element.clientHeight;
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if (currentHeight > bottom) {
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break;
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}
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currentWidth = element.offsetLeft + element.clientLeft;
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viewWidth = element.clientWidth;
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if (currentWidth + viewWidth < left || currentWidth > right) {
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continue;
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}
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hiddenHeight = Math.max(0, top - currentHeight) +
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Math.max(0, currentHeight + viewHeight - bottom);
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percentHeight = ((viewHeight - hiddenHeight) * 100 / viewHeight) | 0;
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visible.push({
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id: view.id,
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x: currentWidth,
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y: currentHeight,
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view: view,
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percent: percentHeight
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});
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}
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var first = visible[0];
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var last = visible[visible.length - 1];
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if (sortByVisibility) {
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visible.sort(function(a, b) {
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var pc = a.percent - b.percent;
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if (Math.abs(pc) > 0.001) {
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return -pc;
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}
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return a.id - b.id; // ensure stability
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});
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}
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return {first: first, last: last, views: visible};
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}
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/**
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* Event handler to suppress context menu.
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*/
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function noContextMenuHandler(e) {
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e.preventDefault();
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}
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/**
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* Returns the filename or guessed filename from the url (see issue 3455).
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* url {String} The original PDF location.
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* @return {String} Guessed PDF file name.
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*/
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function getPDFFileNameFromURL(url) {
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var reURI = /^(?:([^:]+:)?\/\/[^\/]+)?([^?#]*)(\?[^#]*)?(#.*)?$/;
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// SCHEME HOST 1.PATH 2.QUERY 3.REF
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// Pattern to get last matching NAME.pdf
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var reFilename = /[^\/?#=]+\.pdf\b(?!.*\.pdf\b)/i;
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var splitURI = reURI.exec(url);
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var suggestedFilename = reFilename.exec(splitURI[1]) ||
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reFilename.exec(splitURI[2]) ||
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reFilename.exec(splitURI[3]);
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if (suggestedFilename) {
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suggestedFilename = suggestedFilename[0];
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if (suggestedFilename.indexOf('%') !== -1) {
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// URL-encoded %2Fpath%2Fto%2Ffile.pdf should be file.pdf
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try {
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suggestedFilename =
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reFilename.exec(decodeURIComponent(suggestedFilename))[0];
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} catch(e) { // Possible (extremely rare) errors:
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// URIError "Malformed URI", e.g. for "%AA.pdf"
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// TypeError "null has no properties", e.g. for "%2F.pdf"
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}
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}
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}
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return suggestedFilename || 'document.pdf';
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}
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var ProgressBar = (function ProgressBarClosure() {
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function clamp(v, min, max) {
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return Math.min(Math.max(v, min), max);
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}
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function ProgressBar(id, opts) {
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this.visible = true;
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// Fetch the sub-elements for later.
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this.div = document.querySelector(id + ' .progress');
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// Get the loading bar element, so it can be resized to fit the viewer.
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this.bar = this.div.parentNode;
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// Get options, with sensible defaults.
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this.height = opts.height || 100;
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this.width = opts.width || 100;
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this.units = opts.units || '%';
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// Initialize heights.
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this.div.style.height = this.height + this.units;
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this.percent = 0;
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}
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ProgressBar.prototype = {
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updateBar: function ProgressBar_updateBar() {
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if (this._indeterminate) {
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this.div.classList.add('indeterminate');
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this.div.style.width = this.width + this.units;
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return;
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}
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this.div.classList.remove('indeterminate');
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var progressSize = this.width * this._percent / 100;
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this.div.style.width = progressSize + this.units;
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},
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get percent() {
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return this._percent;
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},
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set percent(val) {
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this._indeterminate = isNaN(val);
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this._percent = clamp(val, 0, 100);
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this.updateBar();
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},
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setWidth: function ProgressBar_setWidth(viewer) {
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if (viewer) {
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var container = viewer.parentNode;
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var scrollbarWidth = container.offsetWidth - viewer.offsetWidth;
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if (scrollbarWidth > 0) {
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this.bar.setAttribute('style', 'width: calc(100% - ' +
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scrollbarWidth + 'px);');
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}
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}
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},
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hide: function ProgressBar_hide() {
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if (!this.visible) {
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return;
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}
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this.visible = false;
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this.bar.classList.add('hidden');
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document.body.classList.remove('loadingInProgress');
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|
},
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show: function ProgressBar_show() {
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if (this.visible) {
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return;
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}
|
|
this.visible = true;
|
|
document.body.classList.add('loadingInProgress');
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|
this.bar.classList.remove('hidden');
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|
}
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|
};
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|
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return ProgressBar;
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})();
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|
|
|
|
|
|
var DEFAULT_PREFERENCES = {
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|
showPreviousViewOnLoad: true,
|
|
defaultZoomValue: '',
|
|
sidebarViewOnLoad: 0,
|
|
enableHandToolOnLoad: false,
|
|
enableWebGL: false,
|
|
pdfBugEnabled: false,
|
|
disableRange: false,
|
|
disableStream: false,
|
|
disableAutoFetch: false,
|
|
disableFontFace: false,
|
|
disableTextLayer: false,
|
|
useOnlyCssZoom: false,
|
|
externalLinkTarget: 0,
|
|
};
|
|
|
|
|
|
var SidebarView = {
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|
NONE: 0,
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|
THUMBS: 1,
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|
OUTLINE: 2,
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|
ATTACHMENTS: 3
|
|
};
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|
|
|
/**
|
|
* Preferences - Utility for storing persistent settings.
|
|
* Used for settings that should be applied to all opened documents,
|
|
* or every time the viewer is loaded.
|
|
*/
|
|
var Preferences = {
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|
prefs: Object.create(DEFAULT_PREFERENCES),
|
|
isInitializedPromiseResolved: false,
|
|
initializedPromise: null,
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|
|
|
/**
|
|
* Initialize and fetch the current preference values from storage.
|
|
* @return {Promise} A promise that is resolved when the preferences
|
|
* have been initialized.
|
|
*/
|
|
initialize: function preferencesInitialize() {
|
|
return this.initializedPromise =
|
|
this._readFromStorage(DEFAULT_PREFERENCES).then(function(prefObj) {
|
|
this.isInitializedPromiseResolved = true;
|
|
if (prefObj) {
|
|
this.prefs = prefObj;
|
|
}
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* Stub function for writing preferences to storage.
|
|
* NOTE: This should be overridden by a build-specific function defined below.
|
|
* @param {Object} prefObj The preferences that should be written to storage.
|
|
* @return {Promise} A promise that is resolved when the preference values
|
|
* have been written.
|
|
*/
|
|
_writeToStorage: function preferences_writeToStorage(prefObj) {
|
|
return Promise.resolve();
|
|
},
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|
|
|
/**
|
|
* Stub function for reading preferences from storage.
|
|
* NOTE: This should be overridden by a build-specific function defined below.
|
|
* @param {Object} prefObj The preferences that should be read from storage.
|
|
* @return {Promise} A promise that is resolved with an {Object} containing
|
|
* the preferences that have been read.
|
|
*/
|
|
_readFromStorage: function preferences_readFromStorage(prefObj) {
|
|
return Promise.resolve();
|
|
},
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|
|
|
/**
|
|
* Reset the preferences to their default values and update storage.
|
|
* @return {Promise} A promise that is resolved when the preference values
|
|
* have been reset.
|
|
*/
|
|
reset: function preferencesReset() {
|
|
return this.initializedPromise.then(function() {
|
|
this.prefs = Object.create(DEFAULT_PREFERENCES);
|
|
return this._writeToStorage(DEFAULT_PREFERENCES);
|
|
}.bind(this));
|
|
},
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|
|
|
/**
|
|
* Replace the current preference values with the ones from storage.
|
|
* @return {Promise} A promise that is resolved when the preference values
|
|
* have been updated.
|
|
*/
|
|
reload: function preferencesReload() {
|
|
return this.initializedPromise.then(function () {
|
|
this._readFromStorage(DEFAULT_PREFERENCES).then(function(prefObj) {
|
|
if (prefObj) {
|
|
this.prefs = prefObj;
|
|
}
|
|
}.bind(this));
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* Set the value of a preference.
|
|
* @param {string} name The name of the preference that should be changed.
|
|
* @param {boolean|number|string} value The new value of the preference.
|
|
* @return {Promise} A promise that is resolved when the value has been set,
|
|
* provided that the preference exists and the types match.
|
|
*/
|
|
set: function preferencesSet(name, value) {
|
|
return this.initializedPromise.then(function () {
|
|
if (DEFAULT_PREFERENCES[name] === undefined) {
|
|
throw new Error('preferencesSet: \'' + name + '\' is undefined.');
|
|
} else if (value === undefined) {
|
|
throw new Error('preferencesSet: no value is specified.');
|
|
}
|
|
var valueType = typeof value;
|
|
var defaultType = typeof DEFAULT_PREFERENCES[name];
|
|
|
|
if (valueType !== defaultType) {
|
|
if (valueType === 'number' && defaultType === 'string') {
|
|
value = value.toString();
|
|
} else {
|
|
throw new Error('Preferences_set: \'' + value + '\' is a \"' +
|
|
valueType + '\", expected \"' + defaultType + '\".');
|
|
}
|
|
} else {
|
|
if (valueType === 'number' && (value | 0) !== value) {
|
|
throw new Error('Preferences_set: \'' + value +
|
|
'\' must be an \"integer\".');
|
|
}
|
|
}
|
|
this.prefs[name] = value;
|
|
return this._writeToStorage(this.prefs);
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* Get the value of a preference.
|
|
* @param {string} name The name of the preference whose value is requested.
|
|
* @return {Promise} A promise that is resolved with a {boolean|number|string}
|
|
* containing the value of the preference.
|
|
*/
|
|
get: function preferencesGet(name) {
|
|
return this.initializedPromise.then(function () {
|
|
var defaultValue = DEFAULT_PREFERENCES[name];
|
|
|
|
if (defaultValue === undefined) {
|
|
throw new Error('preferencesGet: \'' + name + '\' is undefined.');
|
|
} else {
|
|
var prefValue = this.prefs[name];
|
|
|
|
if (prefValue !== undefined) {
|
|
return prefValue;
|
|
}
|
|
}
|
|
return defaultValue;
|
|
}.bind(this));
|
|
}
|
|
};
|
|
|
|
|
|
Preferences._writeToStorage = function (prefObj) {
|
|
return new Promise(function (resolve) {
|
|
localStorage.setItem('pdfjs.preferences', JSON.stringify(prefObj));
|
|
resolve();
|
|
});
|
|
};
|
|
|
|
Preferences._readFromStorage = function (prefObj) {
|
|
return new Promise(function (resolve) {
|
|
var readPrefs = JSON.parse(localStorage.getItem('pdfjs.preferences'));
|
|
resolve(readPrefs);
|
|
});
|
|
};
|
|
|
|
|
|
(function mozPrintCallbackPolyfillClosure() {
|
|
if ('mozPrintCallback' in document.createElement('canvas')) {
|
|
return;
|
|
}
|
|
// Cause positive result on feature-detection:
|
|
HTMLCanvasElement.prototype.mozPrintCallback = undefined;
|
|
|
|
var canvases; // During print task: non-live NodeList of <canvas> elements
|
|
var index; // Index of <canvas> element that is being processed
|
|
|
|
var print = window.print;
|
|
window.print = function print() {
|
|
if (canvases) {
|
|
console.warn('Ignored window.print() because of a pending print job.');
|
|
return;
|
|
}
|
|
try {
|
|
dispatchEvent('beforeprint');
|
|
} finally {
|
|
canvases = document.querySelectorAll('canvas');
|
|
index = -1;
|
|
next();
|
|
}
|
|
};
|
|
|
|
function dispatchEvent(eventType) {
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent(eventType, false, false, 'custom');
|
|
window.dispatchEvent(event);
|
|
}
|
|
|
|
function next() {
|
|
if (!canvases) {
|
|
return; // Print task cancelled by user (state reset in abort())
|
|
}
|
|
|
|
renderProgress();
|
|
if (++index < canvases.length) {
|
|
var canvas = canvases[index];
|
|
if (typeof canvas.mozPrintCallback === 'function') {
|
|
canvas.mozPrintCallback({
|
|
context: canvas.getContext('2d'),
|
|
abort: abort,
|
|
done: next
|
|
});
|
|
} else {
|
|
next();
|
|
}
|
|
} else {
|
|
renderProgress();
|
|
print.call(window);
|
|
setTimeout(abort, 20); // Tidy-up
|
|
}
|
|
}
|
|
|
|
function abort() {
|
|
if (canvases) {
|
|
canvases = null;
|
|
renderProgress();
|
|
dispatchEvent('afterprint');
|
|
}
|
|
}
|
|
|
|
function renderProgress() {
|
|
var progressContainer = document.getElementById('mozPrintCallback-shim');
|
|
if (canvases && canvases.length) {
|
|
var progress = Math.round(100 * index / canvases.length);
|
|
var progressBar = progressContainer.querySelector('progress');
|
|
var progressPerc = progressContainer.querySelector('.relative-progress');
|
|
progressBar.value = progress;
|
|
progressPerc.textContent = progress + '%';
|
|
progressContainer.removeAttribute('hidden');
|
|
progressContainer.onclick = abort;
|
|
} else {
|
|
progressContainer.setAttribute('hidden', '');
|
|
}
|
|
}
|
|
|
|
var hasAttachEvent = !!document.attachEvent;
|
|
|
|
window.addEventListener('keydown', function(event) {
|
|
// Intercept Cmd/Ctrl + P in all browsers.
|
|
// Also intercept Cmd/Ctrl + Shift + P in Chrome and Opera
|
|
if (event.keyCode === 80/*P*/ && (event.ctrlKey || event.metaKey) &&
|
|
!event.altKey && (!event.shiftKey || window.chrome || window.opera)) {
|
|
window.print();
|
|
if (hasAttachEvent) {
|
|
// Only attachEvent can cancel Ctrl + P dialog in IE <=10
|
|
// attachEvent is gone in IE11, so the dialog will re-appear in IE11.
|
|
return;
|
|
}
|
|
event.preventDefault();
|
|
if (event.stopImmediatePropagation) {
|
|
event.stopImmediatePropagation();
|
|
} else {
|
|
event.stopPropagation();
|
|
}
|
|
return;
|
|
}
|
|
if (event.keyCode === 27 && canvases) { // Esc
|
|
abort();
|
|
}
|
|
}, true);
|
|
if (hasAttachEvent) {
|
|
document.attachEvent('onkeydown', function(event) {
|
|
event = event || window.event;
|
|
if (event.keyCode === 80/*P*/ && event.ctrlKey) {
|
|
event.keyCode = 0;
|
|
return false;
|
|
}
|
|
});
|
|
}
|
|
|
|
if ('onbeforeprint' in window) {
|
|
// Do not propagate before/afterprint events when they are not triggered
|
|
// from within this polyfill. (FF/IE).
|
|
var stopPropagationIfNeeded = function(event) {
|
|
if (event.detail !== 'custom' && event.stopImmediatePropagation) {
|
|
event.stopImmediatePropagation();
|
|
}
|
|
};
|
|
window.addEventListener('beforeprint', stopPropagationIfNeeded, false);
|
|
window.addEventListener('afterprint', stopPropagationIfNeeded, false);
|
|
}
|
|
})();
|
|
|
|
|
|
|
|
var DownloadManager = (function DownloadManagerClosure() {
|
|
|
|
function download(blobUrl, filename) {
|
|
var a = document.createElement('a');
|
|
if (a.click) {
|
|
// Use a.click() if available. Otherwise, Chrome might show
|
|
// "Unsafe JavaScript attempt to initiate a navigation change
|
|
// for frame with URL" and not open the PDF at all.
|
|
// Supported by (not mentioned = untested):
|
|
// - Firefox 6 - 19 (4- does not support a.click, 5 ignores a.click)
|
|
// - Chrome 19 - 26 (18- does not support a.click)
|
|
// - Opera 9 - 12.15
|
|
// - Internet Explorer 6 - 10
|
|
// - Safari 6 (5.1- does not support a.click)
|
|
a.href = blobUrl;
|
|
a.target = '_parent';
|
|
// Use a.download if available. This increases the likelihood that
|
|
// the file is downloaded instead of opened by another PDF plugin.
|
|
if ('download' in a) {
|
|
a.download = filename;
|
|
}
|
|
// <a> must be in the document for IE and recent Firefox versions.
|
|
// (otherwise .click() is ignored)
|
|
(document.body || document.documentElement).appendChild(a);
|
|
a.click();
|
|
a.parentNode.removeChild(a);
|
|
} else {
|
|
if (window.top === window &&
|
|
blobUrl.split('#')[0] === window.location.href.split('#')[0]) {
|
|
// If _parent == self, then opening an identical URL with different
|
|
// location hash will only cause a navigation, not a download.
|
|
var padCharacter = blobUrl.indexOf('?') === -1 ? '?' : '&';
|
|
blobUrl = blobUrl.replace(/#|$/, padCharacter + '$&');
|
|
}
|
|
window.open(blobUrl, '_parent');
|
|
}
|
|
}
|
|
|
|
function DownloadManager() {}
|
|
|
|
DownloadManager.prototype = {
|
|
downloadUrl: function DownloadManager_downloadUrl(url, filename) {
|
|
if (!PDFJS.isValidUrl(url, true)) {
|
|
return; // restricted/invalid URL
|
|
}
|
|
|
|
download(url + '#pdfjs.action=download', filename);
|
|
},
|
|
|
|
downloadData: function DownloadManager_downloadData(data, filename,
|
|
contentType) {
|
|
if (navigator.msSaveBlob) { // IE10 and above
|
|
return navigator.msSaveBlob(new Blob([data], { type: contentType }),
|
|
filename);
|
|
}
|
|
|
|
var blobUrl = PDFJS.createObjectURL(data, contentType);
|
|
download(blobUrl, filename);
|
|
},
|
|
|
|
download: function DownloadManager_download(blob, url, filename) {
|
|
if (!URL) {
|
|
// URL.createObjectURL is not supported
|
|
this.downloadUrl(url, filename);
|
|
return;
|
|
}
|
|
|
|
if (navigator.msSaveBlob) {
|
|
// IE10 / IE11
|
|
if (!navigator.msSaveBlob(blob, filename)) {
|
|
this.downloadUrl(url, filename);
|
|
}
|
|
return;
|
|
}
|
|
|
|
var blobUrl = URL.createObjectURL(blob);
|
|
download(blobUrl, filename);
|
|
}
|
|
};
|
|
|
|
return DownloadManager;
|
|
})();
|
|
|
|
|
|
|
|
|
|
|
|
var DEFAULT_VIEW_HISTORY_CACHE_SIZE = 20;
|
|
|
|
/**
|
|
* View History - This is a utility for saving various view parameters for
|
|
* recently opened files.
|
|
*
|
|
* The way that the view parameters are stored depends on how PDF.js is built,
|
|
* for 'node make <flag>' the following cases exist:
|
|
* - FIREFOX or MOZCENTRAL - uses sessionStorage.
|
|
* - GENERIC or CHROME - uses localStorage, if it is available.
|
|
*/
|
|
var ViewHistory = (function ViewHistoryClosure() {
|
|
function ViewHistory(fingerprint, cacheSize) {
|
|
this.fingerprint = fingerprint;
|
|
this.cacheSize = cacheSize || DEFAULT_VIEW_HISTORY_CACHE_SIZE;
|
|
this.isInitializedPromiseResolved = false;
|
|
this.initializedPromise =
|
|
this._readFromStorage().then(function (databaseStr) {
|
|
this.isInitializedPromiseResolved = true;
|
|
|
|
var database = JSON.parse(databaseStr || '{}');
|
|
if (!('files' in database)) {
|
|
database.files = [];
|
|
}
|
|
if (database.files.length >= this.cacheSize) {
|
|
database.files.shift();
|
|
}
|
|
var index;
|
|
for (var i = 0, length = database.files.length; i < length; i++) {
|
|
var branch = database.files[i];
|
|
if (branch.fingerprint === this.fingerprint) {
|
|
index = i;
|
|
break;
|
|
}
|
|
}
|
|
if (typeof index !== 'number') {
|
|
index = database.files.push({fingerprint: this.fingerprint}) - 1;
|
|
}
|
|
this.file = database.files[index];
|
|
this.database = database;
|
|
}.bind(this));
|
|
}
|
|
|
|
ViewHistory.prototype = {
|
|
_writeToStorage: function ViewHistory_writeToStorage() {
|
|
return new Promise(function (resolve) {
|
|
var databaseStr = JSON.stringify(this.database);
|
|
|
|
|
|
localStorage.setItem('database', databaseStr);
|
|
resolve();
|
|
}.bind(this));
|
|
},
|
|
|
|
_readFromStorage: function ViewHistory_readFromStorage() {
|
|
return new Promise(function (resolve) {
|
|
|
|
resolve(localStorage.getItem('database'));
|
|
});
|
|
},
|
|
|
|
set: function ViewHistory_set(name, val) {
|
|
if (!this.isInitializedPromiseResolved) {
|
|
return;
|
|
}
|
|
this.file[name] = val;
|
|
return this._writeToStorage();
|
|
},
|
|
|
|
setMultiple: function ViewHistory_setMultiple(properties) {
|
|
if (!this.isInitializedPromiseResolved) {
|
|
return;
|
|
}
|
|
for (var name in properties) {
|
|
this.file[name] = properties[name];
|
|
}
|
|
return this._writeToStorage();
|
|
},
|
|
|
|
get: function ViewHistory_get(name, defaultValue) {
|
|
if (!this.isInitializedPromiseResolved) {
|
|
return defaultValue;
|
|
}
|
|
return this.file[name] || defaultValue;
|
|
}
|
|
};
|
|
|
|
return ViewHistory;
|
|
})();
|
|
|
|
|
|
/**
|
|
* Creates a "search bar" given a set of DOM elements that act as controls
|
|
* for searching or for setting search preferences in the UI. This object
|
|
* also sets up the appropriate events for the controls. Actual searching
|
|
* is done by PDFFindController.
|
|
*/
|
|
var PDFFindBar = (function PDFFindBarClosure() {
|
|
function PDFFindBar(options) {
|
|
this.opened = false;
|
|
this.bar = options.bar || null;
|
|
this.toggleButton = options.toggleButton || null;
|
|
this.findField = options.findField || null;
|
|
this.highlightAll = options.highlightAllCheckbox || null;
|
|
this.caseSensitive = options.caseSensitiveCheckbox || null;
|
|
this.findMsg = options.findMsg || null;
|
|
this.findResultsCount = options.findResultsCount || null;
|
|
this.findStatusIcon = options.findStatusIcon || null;
|
|
this.findPreviousButton = options.findPreviousButton || null;
|
|
this.findNextButton = options.findNextButton || null;
|
|
this.findController = options.findController || null;
|
|
|
|
if (this.findController === null) {
|
|
throw new Error('PDFFindBar cannot be used without a ' +
|
|
'PDFFindController instance.');
|
|
}
|
|
|
|
// Add event listeners to the DOM elements.
|
|
var self = this;
|
|
this.toggleButton.addEventListener('click', function() {
|
|
self.toggle();
|
|
});
|
|
|
|
this.findField.addEventListener('input', function() {
|
|
self.dispatchEvent('');
|
|
});
|
|
|
|
this.bar.addEventListener('keydown', function(evt) {
|
|
switch (evt.keyCode) {
|
|
case 13: // Enter
|
|
if (evt.target === self.findField) {
|
|
self.dispatchEvent('again', evt.shiftKey);
|
|
}
|
|
break;
|
|
case 27: // Escape
|
|
self.close();
|
|
break;
|
|
}
|
|
});
|
|
|
|
this.findPreviousButton.addEventListener('click', function() {
|
|
self.dispatchEvent('again', true);
|
|
});
|
|
|
|
this.findNextButton.addEventListener('click', function() {
|
|
self.dispatchEvent('again', false);
|
|
});
|
|
|
|
this.highlightAll.addEventListener('click', function() {
|
|
self.dispatchEvent('highlightallchange');
|
|
});
|
|
|
|
this.caseSensitive.addEventListener('click', function() {
|
|
self.dispatchEvent('casesensitivitychange');
|
|
});
|
|
}
|
|
|
|
PDFFindBar.prototype = {
|
|
dispatchEvent: function PDFFindBar_dispatchEvent(type, findPrev) {
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('find' + type, true, true, {
|
|
query: this.findField.value,
|
|
caseSensitive: this.caseSensitive.checked,
|
|
highlightAll: this.highlightAll.checked,
|
|
findPrevious: findPrev
|
|
});
|
|
return window.dispatchEvent(event);
|
|
},
|
|
|
|
updateUIState:
|
|
function PDFFindBar_updateUIState(state, previous, matchCount) {
|
|
var notFound = false;
|
|
var findMsg = '';
|
|
var status = '';
|
|
|
|
switch (state) {
|
|
case FindStates.FIND_FOUND:
|
|
break;
|
|
|
|
case FindStates.FIND_PENDING:
|
|
status = 'pending';
|
|
break;
|
|
|
|
case FindStates.FIND_NOTFOUND:
|
|
findMsg = 'Phrase not found';
|
|
notFound = true;
|
|
break;
|
|
|
|
case FindStates.FIND_WRAPPED:
|
|
if (previous) {
|
|
findMsg = 'Reached top of document, continued from bottom';
|
|
} else {
|
|
findMsg = 'Reached end of document, continued from top';
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (notFound) {
|
|
this.findField.classList.add('notFound');
|
|
} else {
|
|
this.findField.classList.remove('notFound');
|
|
}
|
|
|
|
this.findField.setAttribute('data-status', status);
|
|
this.findMsg.textContent = findMsg;
|
|
|
|
this.updateResultsCount(matchCount);
|
|
},
|
|
|
|
updateResultsCount: function(matchCount) {
|
|
if (!this.findResultsCount) {
|
|
return; // no UI control is provided
|
|
}
|
|
|
|
// If there are no matches, hide the counter
|
|
if (!matchCount) {
|
|
this.findResultsCount.classList.add('hidden');
|
|
return;
|
|
}
|
|
|
|
// Create the match counter
|
|
this.findResultsCount.textContent = matchCount.toLocaleString();
|
|
|
|
// Show the counter
|
|
this.findResultsCount.classList.remove('hidden');
|
|
},
|
|
|
|
open: function PDFFindBar_open() {
|
|
if (!this.opened) {
|
|
this.opened = true;
|
|
this.toggleButton.classList.add('toggled');
|
|
this.bar.classList.remove('hidden');
|
|
}
|
|
this.findField.select();
|
|
this.findField.focus();
|
|
},
|
|
|
|
close: function PDFFindBar_close() {
|
|
if (!this.opened) {
|
|
return;
|
|
}
|
|
this.opened = false;
|
|
this.toggleButton.classList.remove('toggled');
|
|
this.bar.classList.add('hidden');
|
|
this.findController.active = false;
|
|
},
|
|
|
|
toggle: function PDFFindBar_toggle() {
|
|
if (this.opened) {
|
|
this.close();
|
|
} else {
|
|
this.open();
|
|
}
|
|
}
|
|
};
|
|
return PDFFindBar;
|
|
})();
|
|
|
|
|
|
var FindStates = {
|
|
FIND_FOUND: 0,
|
|
FIND_NOTFOUND: 1,
|
|
FIND_WRAPPED: 2,
|
|
FIND_PENDING: 3
|
|
};
|
|
|
|
var FIND_SCROLL_OFFSET_TOP = -50;
|
|
var FIND_SCROLL_OFFSET_LEFT = -400;
|
|
|
|
/**
|
|
* Provides "search" or "find" functionality for the PDF.
|
|
* This object actually performs the search for a given string.
|
|
*/
|
|
var PDFFindController = (function PDFFindControllerClosure() {
|
|
function PDFFindController(options) {
|
|
this.startedTextExtraction = false;
|
|
this.extractTextPromises = [];
|
|
this.pendingFindMatches = {};
|
|
this.active = false; // If active, find results will be highlighted.
|
|
this.pageContents = []; // Stores the text for each page.
|
|
this.pageMatches = [];
|
|
this.matchCount = 0;
|
|
this.selected = { // Currently selected match.
|
|
pageIdx: -1,
|
|
matchIdx: -1
|
|
};
|
|
this.offset = { // Where the find algorithm currently is in the document.
|
|
pageIdx: null,
|
|
matchIdx: null
|
|
};
|
|
this.pagesToSearch = null;
|
|
this.resumePageIdx = null;
|
|
this.state = null;
|
|
this.dirtyMatch = false;
|
|
this.findTimeout = null;
|
|
this.pdfViewer = options.pdfViewer || null;
|
|
this.integratedFind = options.integratedFind || false;
|
|
this.charactersToNormalize = {
|
|
'\u2018': '\'', // Left single quotation mark
|
|
'\u2019': '\'', // Right single quotation mark
|
|
'\u201A': '\'', // Single low-9 quotation mark
|
|
'\u201B': '\'', // Single high-reversed-9 quotation mark
|
|
'\u201C': '"', // Left double quotation mark
|
|
'\u201D': '"', // Right double quotation mark
|
|
'\u201E': '"', // Double low-9 quotation mark
|
|
'\u201F': '"', // Double high-reversed-9 quotation mark
|
|
'\u00BC': '1/4', // Vulgar fraction one quarter
|
|
'\u00BD': '1/2', // Vulgar fraction one half
|
|
'\u00BE': '3/4', // Vulgar fraction three quarters
|
|
};
|
|
this.findBar = options.findBar || null;
|
|
|
|
// Compile the regular expression for text normalization once
|
|
var replace = Object.keys(this.charactersToNormalize).join('');
|
|
this.normalizationRegex = new RegExp('[' + replace + ']', 'g');
|
|
|
|
var events = [
|
|
'find',
|
|
'findagain',
|
|
'findhighlightallchange',
|
|
'findcasesensitivitychange'
|
|
];
|
|
|
|
this.firstPagePromise = new Promise(function (resolve) {
|
|
this.resolveFirstPage = resolve;
|
|
}.bind(this));
|
|
this.handleEvent = this.handleEvent.bind(this);
|
|
|
|
for (var i = 0, len = events.length; i < len; i++) {
|
|
window.addEventListener(events[i], this.handleEvent);
|
|
}
|
|
}
|
|
|
|
PDFFindController.prototype = {
|
|
setFindBar: function PDFFindController_setFindBar(findBar) {
|
|
this.findBar = findBar;
|
|
},
|
|
|
|
reset: function PDFFindController_reset() {
|
|
this.startedTextExtraction = false;
|
|
this.extractTextPromises = [];
|
|
this.active = false;
|
|
},
|
|
|
|
normalize: function PDFFindController_normalize(text) {
|
|
var self = this;
|
|
return text.replace(this.normalizationRegex, function (ch) {
|
|
return self.charactersToNormalize[ch];
|
|
});
|
|
},
|
|
|
|
calcFindMatch: function PDFFindController_calcFindMatch(pageIndex) {
|
|
var pageContent = this.normalize(this.pageContents[pageIndex]);
|
|
var query = this.normalize(this.state.query);
|
|
var caseSensitive = this.state.caseSensitive;
|
|
var queryLen = query.length;
|
|
|
|
if (queryLen === 0) {
|
|
// Do nothing: the matches should be wiped out already.
|
|
return;
|
|
}
|
|
|
|
if (!caseSensitive) {
|
|
pageContent = pageContent.toLowerCase();
|
|
query = query.toLowerCase();
|
|
}
|
|
|
|
var matches = [];
|
|
var matchIdx = -queryLen;
|
|
while (true) {
|
|
matchIdx = pageContent.indexOf(query, matchIdx + queryLen);
|
|
if (matchIdx === -1) {
|
|
break;
|
|
}
|
|
matches.push(matchIdx);
|
|
}
|
|
this.pageMatches[pageIndex] = matches;
|
|
this.updatePage(pageIndex);
|
|
if (this.resumePageIdx === pageIndex) {
|
|
this.resumePageIdx = null;
|
|
this.nextPageMatch();
|
|
}
|
|
|
|
// Update the matches count
|
|
if (matches.length > 0) {
|
|
this.matchCount += matches.length;
|
|
this.updateUIResultsCount();
|
|
}
|
|
},
|
|
|
|
extractText: function PDFFindController_extractText() {
|
|
if (this.startedTextExtraction) {
|
|
return;
|
|
}
|
|
this.startedTextExtraction = true;
|
|
|
|
this.pageContents = [];
|
|
var extractTextPromisesResolves = [];
|
|
var numPages = this.pdfViewer.pagesCount;
|
|
for (var i = 0; i < numPages; i++) {
|
|
this.extractTextPromises.push(new Promise(function (resolve) {
|
|
extractTextPromisesResolves.push(resolve);
|
|
}));
|
|
}
|
|
|
|
var self = this;
|
|
function extractPageText(pageIndex) {
|
|
self.pdfViewer.getPageTextContent(pageIndex).then(
|
|
function textContentResolved(textContent) {
|
|
var textItems = textContent.items;
|
|
var str = [];
|
|
|
|
for (var i = 0, len = textItems.length; i < len; i++) {
|
|
str.push(textItems[i].str);
|
|
}
|
|
|
|
// Store the pageContent as a string.
|
|
self.pageContents.push(str.join(''));
|
|
|
|
extractTextPromisesResolves[pageIndex](pageIndex);
|
|
if ((pageIndex + 1) < self.pdfViewer.pagesCount) {
|
|
extractPageText(pageIndex + 1);
|
|
}
|
|
}
|
|
);
|
|
}
|
|
extractPageText(0);
|
|
},
|
|
|
|
handleEvent: function PDFFindController_handleEvent(e) {
|
|
if (this.state === null || e.type !== 'findagain') {
|
|
this.dirtyMatch = true;
|
|
}
|
|
this.state = e.detail;
|
|
this.updateUIState(FindStates.FIND_PENDING);
|
|
|
|
this.firstPagePromise.then(function() {
|
|
this.extractText();
|
|
|
|
clearTimeout(this.findTimeout);
|
|
if (e.type === 'find') {
|
|
// Only trigger the find action after 250ms of silence.
|
|
this.findTimeout = setTimeout(this.nextMatch.bind(this), 250);
|
|
} else {
|
|
this.nextMatch();
|
|
}
|
|
}.bind(this));
|
|
},
|
|
|
|
updatePage: function PDFFindController_updatePage(index) {
|
|
if (this.selected.pageIdx === index) {
|
|
// If the page is selected, scroll the page into view, which triggers
|
|
// rendering the page, which adds the textLayer. Once the textLayer is
|
|
// build, it will scroll onto the selected match.
|
|
this.pdfViewer.scrollPageIntoView(index + 1);
|
|
}
|
|
|
|
var page = this.pdfViewer.getPageView(index);
|
|
if (page.textLayer) {
|
|
page.textLayer.updateMatches();
|
|
}
|
|
},
|
|
|
|
nextMatch: function PDFFindController_nextMatch() {
|
|
var previous = this.state.findPrevious;
|
|
var currentPageIndex = this.pdfViewer.currentPageNumber - 1;
|
|
var numPages = this.pdfViewer.pagesCount;
|
|
|
|
this.active = true;
|
|
|
|
if (this.dirtyMatch) {
|
|
// Need to recalculate the matches, reset everything.
|
|
this.dirtyMatch = false;
|
|
this.selected.pageIdx = this.selected.matchIdx = -1;
|
|
this.offset.pageIdx = currentPageIndex;
|
|
this.offset.matchIdx = null;
|
|
this.hadMatch = false;
|
|
this.resumePageIdx = null;
|
|
this.pageMatches = [];
|
|
this.matchCount = 0;
|
|
var self = this;
|
|
|
|
for (var i = 0; i < numPages; i++) {
|
|
// Wipe out any previous highlighted matches.
|
|
this.updatePage(i);
|
|
|
|
// As soon as the text is extracted start finding the matches.
|
|
if (!(i in this.pendingFindMatches)) {
|
|
this.pendingFindMatches[i] = true;
|
|
this.extractTextPromises[i].then(function(pageIdx) {
|
|
delete self.pendingFindMatches[pageIdx];
|
|
self.calcFindMatch(pageIdx);
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
// If there's no query there's no point in searching.
|
|
if (this.state.query === '') {
|
|
this.updateUIState(FindStates.FIND_FOUND);
|
|
return;
|
|
}
|
|
|
|
// If we're waiting on a page, we return since we can't do anything else.
|
|
if (this.resumePageIdx) {
|
|
return;
|
|
}
|
|
|
|
var offset = this.offset;
|
|
// Keep track of how many pages we should maximally iterate through.
|
|
this.pagesToSearch = numPages;
|
|
// If there's already a matchIdx that means we are iterating through a
|
|
// page's matches.
|
|
if (offset.matchIdx !== null) {
|
|
var numPageMatches = this.pageMatches[offset.pageIdx].length;
|
|
if ((!previous && offset.matchIdx + 1 < numPageMatches) ||
|
|
(previous && offset.matchIdx > 0)) {
|
|
// The simple case; we just have advance the matchIdx to select
|
|
// the next match on the page.
|
|
this.hadMatch = true;
|
|
offset.matchIdx = (previous ? offset.matchIdx - 1 :
|
|
offset.matchIdx + 1);
|
|
this.updateMatch(true);
|
|
return;
|
|
}
|
|
// We went beyond the current page's matches, so we advance to
|
|
// the next page.
|
|
this.advanceOffsetPage(previous);
|
|
}
|
|
// Start searching through the page.
|
|
this.nextPageMatch();
|
|
},
|
|
|
|
matchesReady: function PDFFindController_matchesReady(matches) {
|
|
var offset = this.offset;
|
|
var numMatches = matches.length;
|
|
var previous = this.state.findPrevious;
|
|
|
|
if (numMatches) {
|
|
// There were matches for the page, so initialize the matchIdx.
|
|
this.hadMatch = true;
|
|
offset.matchIdx = (previous ? numMatches - 1 : 0);
|
|
this.updateMatch(true);
|
|
return true;
|
|
} else {
|
|
// No matches, so attempt to search the next page.
|
|
this.advanceOffsetPage(previous);
|
|
if (offset.wrapped) {
|
|
offset.matchIdx = null;
|
|
if (this.pagesToSearch < 0) {
|
|
// No point in wrapping again, there were no matches.
|
|
this.updateMatch(false);
|
|
// while matches were not found, searching for a page
|
|
// with matches should nevertheless halt.
|
|
return true;
|
|
}
|
|
}
|
|
// Matches were not found (and searching is not done).
|
|
return false;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* The method is called back from the text layer when match presentation
|
|
* is updated.
|
|
* @param {number} pageIndex - page index.
|
|
* @param {number} index - match index.
|
|
* @param {Array} elements - text layer div elements array.
|
|
* @param {number} beginIdx - start index of the div array for the match.
|
|
* @param {number} endIdx - end index of the div array for the match.
|
|
*/
|
|
updateMatchPosition: function PDFFindController_updateMatchPosition(
|
|
pageIndex, index, elements, beginIdx, endIdx) {
|
|
if (this.selected.matchIdx === index &&
|
|
this.selected.pageIdx === pageIndex) {
|
|
var spot = {
|
|
top: FIND_SCROLL_OFFSET_TOP,
|
|
left: FIND_SCROLL_OFFSET_LEFT
|
|
};
|
|
scrollIntoView(elements[beginIdx], spot,
|
|
/* skipOverflowHiddenElements = */ true);
|
|
}
|
|
},
|
|
|
|
nextPageMatch: function PDFFindController_nextPageMatch() {
|
|
if (this.resumePageIdx !== null) {
|
|
console.error('There can only be one pending page.');
|
|
}
|
|
do {
|
|
var pageIdx = this.offset.pageIdx;
|
|
var matches = this.pageMatches[pageIdx];
|
|
if (!matches) {
|
|
// The matches don't exist yet for processing by "matchesReady",
|
|
// so set a resume point for when they do exist.
|
|
this.resumePageIdx = pageIdx;
|
|
break;
|
|
}
|
|
} while (!this.matchesReady(matches));
|
|
},
|
|
|
|
advanceOffsetPage: function PDFFindController_advanceOffsetPage(previous) {
|
|
var offset = this.offset;
|
|
var numPages = this.extractTextPromises.length;
|
|
offset.pageIdx = (previous ? offset.pageIdx - 1 : offset.pageIdx + 1);
|
|
offset.matchIdx = null;
|
|
|
|
this.pagesToSearch--;
|
|
|
|
if (offset.pageIdx >= numPages || offset.pageIdx < 0) {
|
|
offset.pageIdx = (previous ? numPages - 1 : 0);
|
|
offset.wrapped = true;
|
|
}
|
|
},
|
|
|
|
updateMatch: function PDFFindController_updateMatch(found) {
|
|
var state = FindStates.FIND_NOTFOUND;
|
|
var wrapped = this.offset.wrapped;
|
|
this.offset.wrapped = false;
|
|
|
|
if (found) {
|
|
var previousPage = this.selected.pageIdx;
|
|
this.selected.pageIdx = this.offset.pageIdx;
|
|
this.selected.matchIdx = this.offset.matchIdx;
|
|
state = (wrapped ? FindStates.FIND_WRAPPED : FindStates.FIND_FOUND);
|
|
// Update the currently selected page to wipe out any selected matches.
|
|
if (previousPage !== -1 && previousPage !== this.selected.pageIdx) {
|
|
this.updatePage(previousPage);
|
|
}
|
|
}
|
|
|
|
this.updateUIState(state, this.state.findPrevious);
|
|
if (this.selected.pageIdx !== -1) {
|
|
this.updatePage(this.selected.pageIdx);
|
|
}
|
|
},
|
|
|
|
updateUIResultsCount:
|
|
function PDFFindController_updateUIResultsCount() {
|
|
if (this.findBar === null) {
|
|
throw new Error('PDFFindController is not initialized with a ' +
|
|
'PDFFindBar instance.');
|
|
}
|
|
this.findBar.updateResultsCount(this.matchCount);
|
|
},
|
|
|
|
updateUIState: function PDFFindController_updateUIState(state, previous) {
|
|
if (this.integratedFind) {
|
|
FirefoxCom.request('updateFindControlState',
|
|
{ result: state, findPrevious: previous });
|
|
return;
|
|
}
|
|
if (this.findBar === null) {
|
|
throw new Error('PDFFindController is not initialized with a ' +
|
|
'PDFFindBar instance.');
|
|
}
|
|
this.findBar.updateUIState(state, previous, this.matchCount);
|
|
}
|
|
};
|
|
return PDFFindController;
|
|
})();
|
|
|
|
|
|
/**
|
|
* Performs navigation functions inside PDF, such as opening specified page,
|
|
* or destination.
|
|
* @class
|
|
* @implements {IPDFLinkService}
|
|
*/
|
|
var PDFLinkService = (function () {
|
|
/**
|
|
* @constructs PDFLinkService
|
|
*/
|
|
function PDFLinkService() {
|
|
this.baseUrl = null;
|
|
this.pdfDocument = null;
|
|
this.pdfViewer = null;
|
|
this.pdfHistory = null;
|
|
|
|
this._pagesRefCache = null;
|
|
}
|
|
|
|
PDFLinkService.prototype = {
|
|
setDocument: function PDFLinkService_setDocument(pdfDocument, baseUrl) {
|
|
this.baseUrl = baseUrl;
|
|
this.pdfDocument = pdfDocument;
|
|
this._pagesRefCache = Object.create(null);
|
|
},
|
|
|
|
setViewer: function PDFLinkService_setViewer(pdfViewer) {
|
|
this.pdfViewer = pdfViewer;
|
|
},
|
|
|
|
setHistory: function PDFLinkService_setHistory(pdfHistory) {
|
|
this.pdfHistory = pdfHistory;
|
|
},
|
|
|
|
/**
|
|
* @returns {number}
|
|
*/
|
|
get pagesCount() {
|
|
return this.pdfDocument.numPages;
|
|
},
|
|
|
|
/**
|
|
* @returns {number}
|
|
*/
|
|
get page() {
|
|
return this.pdfViewer.currentPageNumber;
|
|
},
|
|
|
|
/**
|
|
* @param {number} value
|
|
*/
|
|
set page(value) {
|
|
this.pdfViewer.currentPageNumber = value;
|
|
},
|
|
|
|
/**
|
|
* @param dest - The PDF destination object.
|
|
*/
|
|
navigateTo: function PDFLinkService_navigateTo(dest) {
|
|
var destString = '';
|
|
var self = this;
|
|
|
|
var goToDestination = function(destRef) {
|
|
// dest array looks like that: <page-ref> </XYZ|FitXXX> <args..>
|
|
var pageNumber = destRef instanceof Object ?
|
|
self._pagesRefCache[destRef.num + ' ' + destRef.gen + ' R'] :
|
|
(destRef + 1);
|
|
if (pageNumber) {
|
|
if (pageNumber > self.pagesCount) {
|
|
pageNumber = self.pagesCount;
|
|
}
|
|
self.pdfViewer.scrollPageIntoView(pageNumber, dest);
|
|
|
|
if (self.pdfHistory) {
|
|
// Update the browsing history.
|
|
self.pdfHistory.push({
|
|
dest: dest,
|
|
hash: destString,
|
|
page: pageNumber
|
|
});
|
|
}
|
|
} else {
|
|
self.pdfDocument.getPageIndex(destRef).then(function (pageIndex) {
|
|
var pageNum = pageIndex + 1;
|
|
var cacheKey = destRef.num + ' ' + destRef.gen + ' R';
|
|
self._pagesRefCache[cacheKey] = pageNum;
|
|
goToDestination(destRef);
|
|
});
|
|
}
|
|
};
|
|
|
|
var destinationPromise;
|
|
if (typeof dest === 'string') {
|
|
destString = dest;
|
|
destinationPromise = this.pdfDocument.getDestination(dest);
|
|
} else {
|
|
destinationPromise = Promise.resolve(dest);
|
|
}
|
|
destinationPromise.then(function(destination) {
|
|
dest = destination;
|
|
if (!(destination instanceof Array)) {
|
|
return; // invalid destination
|
|
}
|
|
goToDestination(destination[0]);
|
|
});
|
|
},
|
|
|
|
/**
|
|
* @param dest - The PDF destination object.
|
|
* @returns {string} The hyperlink to the PDF object.
|
|
*/
|
|
getDestinationHash: function PDFLinkService_getDestinationHash(dest) {
|
|
if (typeof dest === 'string') {
|
|
return this.getAnchorUrl('#' + escape(dest));
|
|
}
|
|
if (dest instanceof Array) {
|
|
var destRef = dest[0]; // see navigateTo method for dest format
|
|
var pageNumber = destRef instanceof Object ?
|
|
this._pagesRefCache[destRef.num + ' ' + destRef.gen + ' R'] :
|
|
(destRef + 1);
|
|
if (pageNumber) {
|
|
var pdfOpenParams = this.getAnchorUrl('#page=' + pageNumber);
|
|
var destKind = dest[1];
|
|
if (typeof destKind === 'object' && 'name' in destKind &&
|
|
destKind.name === 'XYZ') {
|
|
var scale = (dest[4] || this.pdfViewer.currentScaleValue);
|
|
var scaleNumber = parseFloat(scale);
|
|
if (scaleNumber) {
|
|
scale = scaleNumber * 100;
|
|
}
|
|
pdfOpenParams += '&zoom=' + scale;
|
|
if (dest[2] || dest[3]) {
|
|
pdfOpenParams += ',' + (dest[2] || 0) + ',' + (dest[3] || 0);
|
|
}
|
|
}
|
|
return pdfOpenParams;
|
|
}
|
|
}
|
|
return this.getAnchorUrl('');
|
|
},
|
|
|
|
/**
|
|
* Prefix the full url on anchor links to make sure that links are resolved
|
|
* relative to the current URL instead of the one defined in <base href>.
|
|
* @param {String} anchor The anchor hash, including the #.
|
|
* @returns {string} The hyperlink to the PDF object.
|
|
*/
|
|
getAnchorUrl: function PDFLinkService_getAnchorUrl(anchor) {
|
|
return (this.baseUrl || '') + anchor;
|
|
},
|
|
|
|
/**
|
|
* @param {string} hash
|
|
*/
|
|
setHash: function PDFLinkService_setHash(hash) {
|
|
if (hash.indexOf('=') >= 0) {
|
|
var params = parseQueryString(hash);
|
|
// borrowing syntax from "Parameters for Opening PDF Files"
|
|
if ('nameddest' in params) {
|
|
if (this.pdfHistory) {
|
|
this.pdfHistory.updateNextHashParam(params.nameddest);
|
|
}
|
|
this.navigateTo(params.nameddest);
|
|
return;
|
|
}
|
|
var pageNumber, dest;
|
|
if ('page' in params) {
|
|
pageNumber = (params.page | 0) || 1;
|
|
}
|
|
if ('zoom' in params) {
|
|
// Build the destination array.
|
|
var zoomArgs = params.zoom.split(','); // scale,left,top
|
|
var zoomArg = zoomArgs[0];
|
|
var zoomArgNumber = parseFloat(zoomArg);
|
|
|
|
if (zoomArg.indexOf('Fit') === -1) {
|
|
// If the zoomArg is a number, it has to get divided by 100. If it's
|
|
// a string, it should stay as it is.
|
|
dest = [null, { name: 'XYZ' },
|
|
zoomArgs.length > 1 ? (zoomArgs[1] | 0) : null,
|
|
zoomArgs.length > 2 ? (zoomArgs[2] | 0) : null,
|
|
(zoomArgNumber ? zoomArgNumber / 100 : zoomArg)];
|
|
} else {
|
|
if (zoomArg === 'Fit' || zoomArg === 'FitB') {
|
|
dest = [null, { name: zoomArg }];
|
|
} else if ((zoomArg === 'FitH' || zoomArg === 'FitBH') ||
|
|
(zoomArg === 'FitV' || zoomArg === 'FitBV')) {
|
|
dest = [null, { name: zoomArg },
|
|
zoomArgs.length > 1 ? (zoomArgs[1] | 0) : null];
|
|
} else if (zoomArg === 'FitR') {
|
|
if (zoomArgs.length !== 5) {
|
|
console.error('PDFLinkService_setHash: ' +
|
|
'Not enough parameters for \'FitR\'.');
|
|
} else {
|
|
dest = [null, { name: zoomArg },
|
|
(zoomArgs[1] | 0), (zoomArgs[2] | 0),
|
|
(zoomArgs[3] | 0), (zoomArgs[4] | 0)];
|
|
}
|
|
} else {
|
|
console.error('PDFLinkService_setHash: \'' + zoomArg +
|
|
'\' is not a valid zoom value.');
|
|
}
|
|
}
|
|
}
|
|
if (dest) {
|
|
this.pdfViewer.scrollPageIntoView(pageNumber || this.page, dest);
|
|
} else if (pageNumber) {
|
|
this.page = pageNumber; // simple page
|
|
}
|
|
if ('pagemode' in params) {
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('pagemode', true, true, {
|
|
mode: params.pagemode,
|
|
});
|
|
this.pdfViewer.container.dispatchEvent(event);
|
|
}
|
|
} else if (/^\d+$/.test(hash)) { // page number
|
|
this.page = hash;
|
|
} else { // named destination
|
|
if (this.pdfHistory) {
|
|
this.pdfHistory.updateNextHashParam(unescape(hash));
|
|
}
|
|
this.navigateTo(unescape(hash));
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @param {string} action
|
|
*/
|
|
executeNamedAction: function PDFLinkService_executeNamedAction(action) {
|
|
// See PDF reference, table 8.45 - Named action
|
|
switch (action) {
|
|
case 'GoBack':
|
|
if (this.pdfHistory) {
|
|
this.pdfHistory.back();
|
|
}
|
|
break;
|
|
|
|
case 'GoForward':
|
|
if (this.pdfHistory) {
|
|
this.pdfHistory.forward();
|
|
}
|
|
break;
|
|
|
|
case 'NextPage':
|
|
this.page++;
|
|
break;
|
|
|
|
case 'PrevPage':
|
|
this.page--;
|
|
break;
|
|
|
|
case 'LastPage':
|
|
this.page = this.pagesCount;
|
|
break;
|
|
|
|
case 'FirstPage':
|
|
this.page = 1;
|
|
break;
|
|
|
|
default:
|
|
break; // No action according to spec
|
|
}
|
|
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('namedaction', true, true, {
|
|
action: action
|
|
});
|
|
this.pdfViewer.container.dispatchEvent(event);
|
|
},
|
|
|
|
/**
|
|
* @param {number} pageNum - page number.
|
|
* @param {Object} pageRef - reference to the page.
|
|
*/
|
|
cachePageRef: function PDFLinkService_cachePageRef(pageNum, pageRef) {
|
|
var refStr = pageRef.num + ' ' + pageRef.gen + ' R';
|
|
this._pagesRefCache[refStr] = pageNum;
|
|
}
|
|
};
|
|
|
|
return PDFLinkService;
|
|
})();
|
|
|
|
|
|
var PDFHistory = (function () {
|
|
function PDFHistory(options) {
|
|
this.linkService = options.linkService;
|
|
|
|
this.initialized = false;
|
|
this.initialDestination = null;
|
|
this.initialBookmark = null;
|
|
}
|
|
|
|
PDFHistory.prototype = {
|
|
/**
|
|
* @param {string} fingerprint
|
|
* @param {IPDFLinkService} linkService
|
|
*/
|
|
initialize: function pdfHistoryInitialize(fingerprint) {
|
|
this.initialized = true;
|
|
this.reInitialized = false;
|
|
this.allowHashChange = true;
|
|
this.historyUnlocked = true;
|
|
this.isViewerInPresentationMode = false;
|
|
|
|
this.previousHash = window.location.hash.substring(1);
|
|
this.currentBookmark = '';
|
|
this.currentPage = 0;
|
|
this.updatePreviousBookmark = false;
|
|
this.previousBookmark = '';
|
|
this.previousPage = 0;
|
|
this.nextHashParam = '';
|
|
|
|
this.fingerprint = fingerprint;
|
|
this.currentUid = this.uid = 0;
|
|
this.current = {};
|
|
|
|
var state = window.history.state;
|
|
if (this._isStateObjectDefined(state)) {
|
|
// This corresponds to navigating back to the document
|
|
// from another page in the browser history.
|
|
if (state.target.dest) {
|
|
this.initialDestination = state.target.dest;
|
|
} else {
|
|
this.initialBookmark = state.target.hash;
|
|
}
|
|
this.currentUid = state.uid;
|
|
this.uid = state.uid + 1;
|
|
this.current = state.target;
|
|
} else {
|
|
// This corresponds to the loading of a new document.
|
|
if (state && state.fingerprint &&
|
|
this.fingerprint !== state.fingerprint) {
|
|
// Reinitialize the browsing history when a new document
|
|
// is opened in the web viewer.
|
|
this.reInitialized = true;
|
|
}
|
|
this._pushOrReplaceState({fingerprint: this.fingerprint}, true);
|
|
}
|
|
|
|
var self = this;
|
|
window.addEventListener('popstate', function pdfHistoryPopstate(evt) {
|
|
if (!self.historyUnlocked) {
|
|
return;
|
|
}
|
|
if (evt.state) {
|
|
// Move back/forward in the history.
|
|
self._goTo(evt.state);
|
|
return;
|
|
}
|
|
|
|
// If the state is not set, then the user tried to navigate to a
|
|
// different hash by manually editing the URL and pressing Enter, or by
|
|
// clicking on an in-page link (e.g. the "current view" link).
|
|
// Save the current view state to the browser history.
|
|
|
|
// Note: In Firefox, history.null could also be null after an in-page
|
|
// navigation to the same URL, and without dispatching the popstate
|
|
// event: https://bugzilla.mozilla.org/show_bug.cgi?id=1183881
|
|
|
|
if (self.uid === 0) {
|
|
// Replace the previous state if it was not explicitly set.
|
|
var previousParams = (self.previousHash && self.currentBookmark &&
|
|
self.previousHash !== self.currentBookmark) ?
|
|
{hash: self.currentBookmark, page: self.currentPage} :
|
|
{page: 1};
|
|
replacePreviousHistoryState(previousParams, function() {
|
|
updateHistoryWithCurrentHash();
|
|
});
|
|
} else {
|
|
updateHistoryWithCurrentHash();
|
|
}
|
|
}, false);
|
|
|
|
|
|
function updateHistoryWithCurrentHash() {
|
|
self.previousHash = window.location.hash.slice(1);
|
|
self._pushToHistory({hash: self.previousHash}, false, true);
|
|
self._updatePreviousBookmark();
|
|
}
|
|
|
|
function replacePreviousHistoryState(params, callback) {
|
|
// To modify the previous history entry, the following happens:
|
|
// 1. history.back()
|
|
// 2. _pushToHistory, which calls history.replaceState( ... )
|
|
// 3. history.forward()
|
|
// Because a navigation via the history API does not immediately update
|
|
// the history state, the popstate event is used for synchronization.
|
|
self.historyUnlocked = false;
|
|
|
|
// Suppress the hashchange event to avoid side effects caused by
|
|
// navigating back and forward.
|
|
self.allowHashChange = false;
|
|
window.addEventListener('popstate', rewriteHistoryAfterBack);
|
|
history.back();
|
|
|
|
function rewriteHistoryAfterBack() {
|
|
window.removeEventListener('popstate', rewriteHistoryAfterBack);
|
|
window.addEventListener('popstate', rewriteHistoryAfterForward);
|
|
self._pushToHistory(params, false, true);
|
|
history.forward();
|
|
}
|
|
function rewriteHistoryAfterForward() {
|
|
window.removeEventListener('popstate', rewriteHistoryAfterForward);
|
|
self.allowHashChange = true;
|
|
self.historyUnlocked = true;
|
|
callback();
|
|
}
|
|
}
|
|
|
|
function pdfHistoryBeforeUnload() {
|
|
var previousParams = self._getPreviousParams(null, true);
|
|
if (previousParams) {
|
|
var replacePrevious = (!self.current.dest &&
|
|
self.current.hash !== self.previousHash);
|
|
self._pushToHistory(previousParams, false, replacePrevious);
|
|
self._updatePreviousBookmark();
|
|
}
|
|
// Remove the event listener when navigating away from the document,
|
|
// since 'beforeunload' prevents Firefox from caching the document.
|
|
window.removeEventListener('beforeunload', pdfHistoryBeforeUnload,
|
|
false);
|
|
}
|
|
|
|
window.addEventListener('beforeunload', pdfHistoryBeforeUnload, false);
|
|
|
|
window.addEventListener('pageshow', function pdfHistoryPageShow(evt) {
|
|
// If the entire viewer (including the PDF file) is cached in
|
|
// the browser, we need to reattach the 'beforeunload' event listener
|
|
// since the 'DOMContentLoaded' event is not fired on 'pageshow'.
|
|
window.addEventListener('beforeunload', pdfHistoryBeforeUnload, false);
|
|
}, false);
|
|
|
|
window.addEventListener('presentationmodechanged', function(e) {
|
|
self.isViewerInPresentationMode = !!e.detail.active;
|
|
});
|
|
},
|
|
|
|
clearHistoryState: function pdfHistory_clearHistoryState() {
|
|
this._pushOrReplaceState(null, true);
|
|
},
|
|
|
|
_isStateObjectDefined: function pdfHistory_isStateObjectDefined(state) {
|
|
return (state && state.uid >= 0 &&
|
|
state.fingerprint && this.fingerprint === state.fingerprint &&
|
|
state.target && state.target.hash) ? true : false;
|
|
},
|
|
|
|
_pushOrReplaceState: function pdfHistory_pushOrReplaceState(stateObj,
|
|
replace) {
|
|
if (replace) {
|
|
window.history.replaceState(stateObj, '', document.URL);
|
|
} else {
|
|
window.history.pushState(stateObj, '', document.URL);
|
|
}
|
|
},
|
|
|
|
get isHashChangeUnlocked() {
|
|
if (!this.initialized) {
|
|
return true;
|
|
}
|
|
return this.allowHashChange;
|
|
},
|
|
|
|
_updatePreviousBookmark: function pdfHistory_updatePreviousBookmark() {
|
|
if (this.updatePreviousBookmark &&
|
|
this.currentBookmark && this.currentPage) {
|
|
this.previousBookmark = this.currentBookmark;
|
|
this.previousPage = this.currentPage;
|
|
this.updatePreviousBookmark = false;
|
|
}
|
|
},
|
|
|
|
updateCurrentBookmark: function pdfHistoryUpdateCurrentBookmark(bookmark,
|
|
pageNum) {
|
|
if (this.initialized) {
|
|
this.currentBookmark = bookmark.substring(1);
|
|
this.currentPage = pageNum | 0;
|
|
this._updatePreviousBookmark();
|
|
}
|
|
},
|
|
|
|
updateNextHashParam: function pdfHistoryUpdateNextHashParam(param) {
|
|
if (this.initialized) {
|
|
this.nextHashParam = param;
|
|
}
|
|
},
|
|
|
|
push: function pdfHistoryPush(params, isInitialBookmark) {
|
|
if (!(this.initialized && this.historyUnlocked)) {
|
|
return;
|
|
}
|
|
if (params.dest && !params.hash) {
|
|
params.hash = (this.current.hash && this.current.dest &&
|
|
this.current.dest === params.dest) ?
|
|
this.current.hash :
|
|
this.linkService.getDestinationHash(params.dest).split('#')[1];
|
|
}
|
|
if (params.page) {
|
|
params.page |= 0;
|
|
}
|
|
if (isInitialBookmark) {
|
|
var target = window.history.state.target;
|
|
if (!target) {
|
|
// Invoked when the user specifies an initial bookmark,
|
|
// thus setting initialBookmark, when the document is loaded.
|
|
this._pushToHistory(params, false);
|
|
this.previousHash = window.location.hash.substring(1);
|
|
}
|
|
this.updatePreviousBookmark = this.nextHashParam ? false : true;
|
|
if (target) {
|
|
// If the current document is reloaded,
|
|
// avoid creating duplicate entries in the history.
|
|
this._updatePreviousBookmark();
|
|
}
|
|
return;
|
|
}
|
|
if (this.nextHashParam) {
|
|
if (this.nextHashParam === params.hash) {
|
|
this.nextHashParam = null;
|
|
this.updatePreviousBookmark = true;
|
|
return;
|
|
} else {
|
|
this.nextHashParam = null;
|
|
}
|
|
}
|
|
|
|
if (params.hash) {
|
|
if (this.current.hash) {
|
|
if (this.current.hash !== params.hash) {
|
|
this._pushToHistory(params, true);
|
|
} else {
|
|
if (!this.current.page && params.page) {
|
|
this._pushToHistory(params, false, true);
|
|
}
|
|
this.updatePreviousBookmark = true;
|
|
}
|
|
} else {
|
|
this._pushToHistory(params, true);
|
|
}
|
|
} else if (this.current.page && params.page &&
|
|
this.current.page !== params.page) {
|
|
this._pushToHistory(params, true);
|
|
}
|
|
},
|
|
|
|
_getPreviousParams: function pdfHistory_getPreviousParams(onlyCheckPage,
|
|
beforeUnload) {
|
|
if (!(this.currentBookmark && this.currentPage)) {
|
|
return null;
|
|
} else if (this.updatePreviousBookmark) {
|
|
this.updatePreviousBookmark = false;
|
|
}
|
|
if (this.uid > 0 && !(this.previousBookmark && this.previousPage)) {
|
|
// Prevent the history from getting stuck in the current state,
|
|
// effectively preventing the user from going back/forward in
|
|
// the history.
|
|
//
|
|
// This happens if the current position in the document didn't change
|
|
// when the history was previously updated. The reasons for this are
|
|
// either:
|
|
// 1. The current zoom value is such that the document does not need to,
|
|
// or cannot, be scrolled to display the destination.
|
|
// 2. The previous destination is broken, and doesn't actally point to a
|
|
// position within the document.
|
|
// (This is either due to a bad PDF generator, or the user making a
|
|
// mistake when entering a destination in the hash parameters.)
|
|
return null;
|
|
}
|
|
if ((!this.current.dest && !onlyCheckPage) || beforeUnload) {
|
|
if (this.previousBookmark === this.currentBookmark) {
|
|
return null;
|
|
}
|
|
} else if (this.current.page || onlyCheckPage) {
|
|
if (this.previousPage === this.currentPage) {
|
|
return null;
|
|
}
|
|
} else {
|
|
return null;
|
|
}
|
|
var params = {hash: this.currentBookmark, page: this.currentPage};
|
|
if (this.isViewerInPresentationMode) {
|
|
params.hash = null;
|
|
}
|
|
return params;
|
|
},
|
|
|
|
_stateObj: function pdfHistory_stateObj(params) {
|
|
return {fingerprint: this.fingerprint, uid: this.uid, target: params};
|
|
},
|
|
|
|
_pushToHistory: function pdfHistory_pushToHistory(params,
|
|
addPrevious, overwrite) {
|
|
if (!this.initialized) {
|
|
return;
|
|
}
|
|
if (!params.hash && params.page) {
|
|
params.hash = ('page=' + params.page);
|
|
}
|
|
if (addPrevious && !overwrite) {
|
|
var previousParams = this._getPreviousParams();
|
|
if (previousParams) {
|
|
var replacePrevious = (!this.current.dest &&
|
|
this.current.hash !== this.previousHash);
|
|
this._pushToHistory(previousParams, false, replacePrevious);
|
|
}
|
|
}
|
|
this._pushOrReplaceState(this._stateObj(params),
|
|
(overwrite || this.uid === 0));
|
|
this.currentUid = this.uid++;
|
|
this.current = params;
|
|
this.updatePreviousBookmark = true;
|
|
},
|
|
|
|
_goTo: function pdfHistory_goTo(state) {
|
|
if (!(this.initialized && this.historyUnlocked &&
|
|
this._isStateObjectDefined(state))) {
|
|
return;
|
|
}
|
|
if (!this.reInitialized && state.uid < this.currentUid) {
|
|
var previousParams = this._getPreviousParams(true);
|
|
if (previousParams) {
|
|
this._pushToHistory(this.current, false);
|
|
this._pushToHistory(previousParams, false);
|
|
this.currentUid = state.uid;
|
|
window.history.back();
|
|
return;
|
|
}
|
|
}
|
|
this.historyUnlocked = false;
|
|
|
|
if (state.target.dest) {
|
|
this.linkService.navigateTo(state.target.dest);
|
|
} else {
|
|
this.linkService.setHash(state.target.hash);
|
|
}
|
|
this.currentUid = state.uid;
|
|
if (state.uid > this.uid) {
|
|
this.uid = state.uid;
|
|
}
|
|
this.current = state.target;
|
|
this.updatePreviousBookmark = true;
|
|
|
|
var currentHash = window.location.hash.substring(1);
|
|
if (this.previousHash !== currentHash) {
|
|
this.allowHashChange = false;
|
|
}
|
|
this.previousHash = currentHash;
|
|
|
|
this.historyUnlocked = true;
|
|
},
|
|
|
|
back: function pdfHistoryBack() {
|
|
this.go(-1);
|
|
},
|
|
|
|
forward: function pdfHistoryForward() {
|
|
this.go(1);
|
|
},
|
|
|
|
go: function pdfHistoryGo(direction) {
|
|
if (this.initialized && this.historyUnlocked) {
|
|
var state = window.history.state;
|
|
if (direction === -1 && state && state.uid > 0) {
|
|
window.history.back();
|
|
} else if (direction === 1 && state && state.uid < (this.uid - 1)) {
|
|
window.history.forward();
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
return PDFHistory;
|
|
})();
|
|
|
|
|
|
var SecondaryToolbar = {
|
|
opened: false,
|
|
previousContainerHeight: null,
|
|
newContainerHeight: null,
|
|
|
|
initialize: function secondaryToolbarInitialize(options) {
|
|
this.toolbar = options.toolbar;
|
|
this.buttonContainer = this.toolbar.firstElementChild;
|
|
|
|
// Define the toolbar buttons.
|
|
this.toggleButton = options.toggleButton;
|
|
this.presentationModeButton = options.presentationModeButton;
|
|
this.openFile = options.openFile;
|
|
this.print = options.print;
|
|
this.download = options.download;
|
|
this.viewBookmark = options.viewBookmark;
|
|
this.firstPage = options.firstPage;
|
|
this.lastPage = options.lastPage;
|
|
this.pageRotateCw = options.pageRotateCw;
|
|
this.pageRotateCcw = options.pageRotateCcw;
|
|
this.documentPropertiesButton = options.documentPropertiesButton;
|
|
|
|
// Attach the event listeners.
|
|
var elements = [
|
|
// Button to toggle the visibility of the secondary toolbar:
|
|
{ element: this.toggleButton, handler: this.toggle },
|
|
// All items within the secondary toolbar
|
|
// (except for toggleHandTool, hand_tool.js is responsible for it):
|
|
{ element: this.presentationModeButton,
|
|
handler: this.presentationModeClick },
|
|
{ element: this.openFile, handler: this.openFileClick },
|
|
{ element: this.print, handler: this.printClick },
|
|
{ element: this.download, handler: this.downloadClick },
|
|
{ element: this.viewBookmark, handler: this.viewBookmarkClick },
|
|
{ element: this.firstPage, handler: this.firstPageClick },
|
|
{ element: this.lastPage, handler: this.lastPageClick },
|
|
{ element: this.pageRotateCw, handler: this.pageRotateCwClick },
|
|
{ element: this.pageRotateCcw, handler: this.pageRotateCcwClick },
|
|
{ element: this.documentPropertiesButton,
|
|
handler: this.documentPropertiesClick }
|
|
];
|
|
|
|
for (var item in elements) {
|
|
var element = elements[item].element;
|
|
if (element) {
|
|
element.addEventListener('click', elements[item].handler.bind(this));
|
|
}
|
|
}
|
|
},
|
|
|
|
// Event handling functions.
|
|
presentationModeClick: function secondaryToolbarPresentationModeClick(evt) {
|
|
PDFViewerApplication.requestPresentationMode();
|
|
this.close();
|
|
},
|
|
|
|
openFileClick: function secondaryToolbarOpenFileClick(evt) {
|
|
document.getElementById('fileInput').click();
|
|
this.close();
|
|
},
|
|
|
|
printClick: function secondaryToolbarPrintClick(evt) {
|
|
window.print();
|
|
this.close();
|
|
},
|
|
|
|
downloadClick: function secondaryToolbarDownloadClick(evt) {
|
|
PDFViewerApplication.download();
|
|
this.close();
|
|
},
|
|
|
|
viewBookmarkClick: function secondaryToolbarViewBookmarkClick(evt) {
|
|
this.close();
|
|
},
|
|
|
|
firstPageClick: function secondaryToolbarFirstPageClick(evt) {
|
|
PDFViewerApplication.page = 1;
|
|
this.close();
|
|
},
|
|
|
|
lastPageClick: function secondaryToolbarLastPageClick(evt) {
|
|
if (PDFViewerApplication.pdfDocument) {
|
|
PDFViewerApplication.page = PDFViewerApplication.pagesCount;
|
|
}
|
|
this.close();
|
|
},
|
|
|
|
pageRotateCwClick: function secondaryToolbarPageRotateCwClick(evt) {
|
|
PDFViewerApplication.rotatePages(90);
|
|
},
|
|
|
|
pageRotateCcwClick: function secondaryToolbarPageRotateCcwClick(evt) {
|
|
PDFViewerApplication.rotatePages(-90);
|
|
},
|
|
|
|
documentPropertiesClick: function secondaryToolbarDocumentPropsClick(evt) {
|
|
PDFViewerApplication.pdfDocumentProperties.open();
|
|
this.close();
|
|
},
|
|
|
|
// Misc. functions for interacting with the toolbar.
|
|
setMaxHeight: function secondaryToolbarSetMaxHeight(container) {
|
|
if (!container || !this.buttonContainer) {
|
|
return;
|
|
}
|
|
this.newContainerHeight = container.clientHeight;
|
|
if (this.previousContainerHeight === this.newContainerHeight) {
|
|
return;
|
|
}
|
|
this.buttonContainer.setAttribute('style',
|
|
'max-height: ' + (this.newContainerHeight - SCROLLBAR_PADDING) + 'px;');
|
|
this.previousContainerHeight = this.newContainerHeight;
|
|
},
|
|
|
|
open: function secondaryToolbarOpen() {
|
|
if (this.opened) {
|
|
return;
|
|
}
|
|
this.opened = true;
|
|
this.toggleButton.classList.add('toggled');
|
|
this.toolbar.classList.remove('hidden');
|
|
},
|
|
|
|
close: function secondaryToolbarClose(target) {
|
|
if (!this.opened) {
|
|
return;
|
|
} else if (target && !this.toolbar.contains(target)) {
|
|
return;
|
|
}
|
|
this.opened = false;
|
|
this.toolbar.classList.add('hidden');
|
|
this.toggleButton.classList.remove('toggled');
|
|
},
|
|
|
|
toggle: function secondaryToolbarToggle() {
|
|
if (this.opened) {
|
|
this.close();
|
|
} else {
|
|
this.open();
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
var DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS = 1500; // in ms
|
|
var DELAY_BEFORE_HIDING_CONTROLS = 3000; // in ms
|
|
var ACTIVE_SELECTOR = 'pdfPresentationMode';
|
|
var CONTROLS_SELECTOR = 'pdfPresentationModeControls';
|
|
|
|
/**
|
|
* @typedef {Object} PDFPresentationModeOptions
|
|
* @property {HTMLDivElement} container - The container for the viewer element.
|
|
* @property {HTMLDivElement} viewer - (optional) The viewer element.
|
|
* @property {PDFViewer} pdfViewer - The document viewer.
|
|
* @property {PDFThumbnailViewer} pdfThumbnailViewer - (optional) The thumbnail
|
|
* viewer.
|
|
* @property {Array} contextMenuItems - (optional) The menuitems that are added
|
|
* to the context menu in Presentation Mode.
|
|
*/
|
|
|
|
/**
|
|
* @class
|
|
*/
|
|
var PDFPresentationMode = (function PDFPresentationModeClosure() {
|
|
/**
|
|
* @constructs PDFPresentationMode
|
|
* @param {PDFPresentationModeOptions} options
|
|
*/
|
|
function PDFPresentationMode(options) {
|
|
this.container = options.container;
|
|
this.viewer = options.viewer || options.container.firstElementChild;
|
|
this.pdfViewer = options.pdfViewer;
|
|
this.pdfThumbnailViewer = options.pdfThumbnailViewer || null;
|
|
var contextMenuItems = options.contextMenuItems || null;
|
|
|
|
this.active = false;
|
|
this.args = null;
|
|
this.contextMenuOpen = false;
|
|
this.mouseScrollTimeStamp = 0;
|
|
this.mouseScrollDelta = 0;
|
|
|
|
if (contextMenuItems) {
|
|
for (var i = 0, ii = contextMenuItems.length; i < ii; i++) {
|
|
var item = contextMenuItems[i];
|
|
item.element.addEventListener('click', function (handler) {
|
|
this.contextMenuOpen = false;
|
|
handler();
|
|
}.bind(this, item.handler));
|
|
}
|
|
}
|
|
}
|
|
|
|
PDFPresentationMode.prototype = {
|
|
/**
|
|
* Request the browser to enter fullscreen mode.
|
|
* @returns {boolean} Indicating if the request was successful.
|
|
*/
|
|
request: function PDFPresentationMode_request() {
|
|
if (this.switchInProgress || this.active ||
|
|
!this.viewer.hasChildNodes()) {
|
|
return false;
|
|
}
|
|
this._addFullscreenChangeListeners();
|
|
this._setSwitchInProgress();
|
|
this._notifyStateChange();
|
|
|
|
if (this.container.requestFullscreen) {
|
|
this.container.requestFullscreen();
|
|
} else if (this.container.mozRequestFullScreen) {
|
|
this.container.mozRequestFullScreen();
|
|
} else if (this.container.webkitRequestFullscreen) {
|
|
this.container.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
|
|
} else if (this.container.msRequestFullscreen) {
|
|
this.container.msRequestFullscreen();
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
this.args = {
|
|
page: this.pdfViewer.currentPageNumber,
|
|
previousScale: this.pdfViewer.currentScaleValue,
|
|
};
|
|
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* Switches page when the user scrolls (using a scroll wheel or a touchpad)
|
|
* with large enough motion, to prevent accidental page switches.
|
|
* @param {number} delta - The delta value from the mouse event.
|
|
*/
|
|
mouseScroll: function PDFPresentationMode_mouseScroll(delta) {
|
|
if (!this.active) {
|
|
return;
|
|
}
|
|
var MOUSE_SCROLL_COOLDOWN_TIME = 50;
|
|
var PAGE_SWITCH_THRESHOLD = 120;
|
|
var PageSwitchDirection = {
|
|
UP: -1,
|
|
DOWN: 1
|
|
};
|
|
|
|
var currentTime = (new Date()).getTime();
|
|
var storedTime = this.mouseScrollTimeStamp;
|
|
|
|
// If we've already switched page, avoid accidentally switching again.
|
|
if (currentTime > storedTime &&
|
|
currentTime - storedTime < MOUSE_SCROLL_COOLDOWN_TIME) {
|
|
return;
|
|
}
|
|
// If the scroll direction changed, reset the accumulated scroll delta.
|
|
if ((this.mouseScrollDelta > 0 && delta < 0) ||
|
|
(this.mouseScrollDelta < 0 && delta > 0)) {
|
|
this._resetMouseScrollState();
|
|
}
|
|
this.mouseScrollDelta += delta;
|
|
|
|
if (Math.abs(this.mouseScrollDelta) >= PAGE_SWITCH_THRESHOLD) {
|
|
var pageSwitchDirection = (this.mouseScrollDelta > 0) ?
|
|
PageSwitchDirection.UP : PageSwitchDirection.DOWN;
|
|
var page = this.pdfViewer.currentPageNumber;
|
|
this._resetMouseScrollState();
|
|
|
|
// If we're at the first/last page, we don't need to do anything.
|
|
if ((page === 1 && pageSwitchDirection === PageSwitchDirection.UP) ||
|
|
(page === this.pdfViewer.pagesCount &&
|
|
pageSwitchDirection === PageSwitchDirection.DOWN)) {
|
|
return;
|
|
}
|
|
this.pdfViewer.currentPageNumber = (page + pageSwitchDirection);
|
|
this.mouseScrollTimeStamp = currentTime;
|
|
}
|
|
},
|
|
|
|
get isFullscreen() {
|
|
return !!(document.fullscreenElement ||
|
|
document.mozFullScreen ||
|
|
document.webkitIsFullScreen ||
|
|
document.msFullscreenElement);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_notifyStateChange: function PDFPresentationMode_notifyStateChange() {
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('presentationmodechanged', true, true, {
|
|
active: this.active,
|
|
switchInProgress: !!this.switchInProgress
|
|
});
|
|
window.dispatchEvent(event);
|
|
},
|
|
|
|
/**
|
|
* Used to initialize a timeout when requesting Presentation Mode,
|
|
* i.e. when the browser is requested to enter fullscreen mode.
|
|
* This timeout is used to prevent the current page from being scrolled
|
|
* partially, or completely, out of view when entering Presentation Mode.
|
|
* NOTE: This issue seems limited to certain zoom levels (e.g. page-width).
|
|
* @private
|
|
*/
|
|
_setSwitchInProgress: function PDFPresentationMode_setSwitchInProgress() {
|
|
if (this.switchInProgress) {
|
|
clearTimeout(this.switchInProgress);
|
|
}
|
|
this.switchInProgress = setTimeout(function switchInProgressTimeout() {
|
|
this._removeFullscreenChangeListeners();
|
|
delete this.switchInProgress;
|
|
this._notifyStateChange();
|
|
}.bind(this), DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_resetSwitchInProgress:
|
|
function PDFPresentationMode_resetSwitchInProgress() {
|
|
if (this.switchInProgress) {
|
|
clearTimeout(this.switchInProgress);
|
|
delete this.switchInProgress;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_enter: function PDFPresentationMode_enter() {
|
|
this.active = true;
|
|
this._resetSwitchInProgress();
|
|
this._notifyStateChange();
|
|
this.container.classList.add(ACTIVE_SELECTOR);
|
|
|
|
// Ensure that the correct page is scrolled into view when entering
|
|
// Presentation Mode, by waiting until fullscreen mode in enabled.
|
|
setTimeout(function enterPresentationModeTimeout() {
|
|
this.pdfViewer.currentPageNumber = this.args.page;
|
|
this.pdfViewer.currentScaleValue = 'page-fit';
|
|
}.bind(this), 0);
|
|
|
|
this._addWindowListeners();
|
|
this._showControls();
|
|
this.contextMenuOpen = false;
|
|
this.container.setAttribute('contextmenu', 'viewerContextMenu');
|
|
|
|
// Text selection is disabled in Presentation Mode, thus it's not possible
|
|
// for the user to deselect text that is selected (e.g. with "Select all")
|
|
// when entering Presentation Mode, hence we remove any active selection.
|
|
window.getSelection().removeAllRanges();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_exit: function PDFPresentationMode_exit() {
|
|
var page = this.pdfViewer.currentPageNumber;
|
|
this.container.classList.remove(ACTIVE_SELECTOR);
|
|
|
|
// Ensure that the correct page is scrolled into view when exiting
|
|
// Presentation Mode, by waiting until fullscreen mode is disabled.
|
|
setTimeout(function exitPresentationModeTimeout() {
|
|
this.active = false;
|
|
this._removeFullscreenChangeListeners();
|
|
this._notifyStateChange();
|
|
|
|
this.pdfViewer.currentScaleValue = this.args.previousScale;
|
|
this.pdfViewer.currentPageNumber = page;
|
|
this.args = null;
|
|
}.bind(this), 0);
|
|
|
|
this._removeWindowListeners();
|
|
this._hideControls();
|
|
this._resetMouseScrollState();
|
|
this.container.removeAttribute('contextmenu');
|
|
this.contextMenuOpen = false;
|
|
|
|
if (this.pdfThumbnailViewer) {
|
|
this.pdfThumbnailViewer.ensureThumbnailVisible(page);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_mouseDown: function PDFPresentationMode_mouseDown(evt) {
|
|
if (this.contextMenuOpen) {
|
|
this.contextMenuOpen = false;
|
|
evt.preventDefault();
|
|
return;
|
|
}
|
|
if (evt.button === 0) {
|
|
// Enable clicking of links in presentation mode. Please note:
|
|
// Only links pointing to destinations in the current PDF document work.
|
|
var isInternalLink = (evt.target.href &&
|
|
evt.target.classList.contains('internalLink'));
|
|
if (!isInternalLink) {
|
|
// Unless an internal link was clicked, advance one page.
|
|
evt.preventDefault();
|
|
this.pdfViewer.currentPageNumber += (evt.shiftKey ? -1 : 1);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_contextMenu: function PDFPresentationMode_contextMenu() {
|
|
this.contextMenuOpen = true;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_showControls: function PDFPresentationMode_showControls() {
|
|
if (this.controlsTimeout) {
|
|
clearTimeout(this.controlsTimeout);
|
|
} else {
|
|
this.container.classList.add(CONTROLS_SELECTOR);
|
|
}
|
|
this.controlsTimeout = setTimeout(function showControlsTimeout() {
|
|
this.container.classList.remove(CONTROLS_SELECTOR);
|
|
delete this.controlsTimeout;
|
|
}.bind(this), DELAY_BEFORE_HIDING_CONTROLS);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_hideControls: function PDFPresentationMode_hideControls() {
|
|
if (!this.controlsTimeout) {
|
|
return;
|
|
}
|
|
clearTimeout(this.controlsTimeout);
|
|
this.container.classList.remove(CONTROLS_SELECTOR);
|
|
delete this.controlsTimeout;
|
|
},
|
|
|
|
/**
|
|
* Resets the properties used for tracking mouse scrolling events.
|
|
* @private
|
|
*/
|
|
_resetMouseScrollState:
|
|
function PDFPresentationMode_resetMouseScrollState() {
|
|
this.mouseScrollTimeStamp = 0;
|
|
this.mouseScrollDelta = 0;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_addWindowListeners: function PDFPresentationMode_addWindowListeners() {
|
|
this.showControlsBind = this._showControls.bind(this);
|
|
this.mouseDownBind = this._mouseDown.bind(this);
|
|
this.resetMouseScrollStateBind = this._resetMouseScrollState.bind(this);
|
|
this.contextMenuBind = this._contextMenu.bind(this);
|
|
|
|
window.addEventListener('mousemove', this.showControlsBind);
|
|
window.addEventListener('mousedown', this.mouseDownBind);
|
|
window.addEventListener('keydown', this.resetMouseScrollStateBind);
|
|
window.addEventListener('contextmenu', this.contextMenuBind);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_removeWindowListeners:
|
|
function PDFPresentationMode_removeWindowListeners() {
|
|
window.removeEventListener('mousemove', this.showControlsBind);
|
|
window.removeEventListener('mousedown', this.mouseDownBind);
|
|
window.removeEventListener('keydown', this.resetMouseScrollStateBind);
|
|
window.removeEventListener('contextmenu', this.contextMenuBind);
|
|
|
|
delete this.showControlsBind;
|
|
delete this.mouseDownBind;
|
|
delete this.resetMouseScrollStateBind;
|
|
delete this.contextMenuBind;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_fullscreenChange: function PDFPresentationMode_fullscreenChange() {
|
|
if (this.isFullscreen) {
|
|
this._enter();
|
|
} else {
|
|
this._exit();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_addFullscreenChangeListeners:
|
|
function PDFPresentationMode_addFullscreenChangeListeners() {
|
|
this.fullscreenChangeBind = this._fullscreenChange.bind(this);
|
|
|
|
window.addEventListener('fullscreenchange', this.fullscreenChangeBind);
|
|
window.addEventListener('mozfullscreenchange', this.fullscreenChangeBind);
|
|
window.addEventListener('webkitfullscreenchange',
|
|
this.fullscreenChangeBind);
|
|
window.addEventListener('MSFullscreenChange', this.fullscreenChangeBind);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_removeFullscreenChangeListeners:
|
|
function PDFPresentationMode_removeFullscreenChangeListeners() {
|
|
window.removeEventListener('fullscreenchange', this.fullscreenChangeBind);
|
|
window.removeEventListener('mozfullscreenchange',
|
|
this.fullscreenChangeBind);
|
|
window.removeEventListener('webkitfullscreenchange',
|
|
this.fullscreenChangeBind);
|
|
window.removeEventListener('MSFullscreenChange',
|
|
this.fullscreenChangeBind);
|
|
|
|
delete this.fullscreenChangeBind;
|
|
}
|
|
};
|
|
|
|
return PDFPresentationMode;
|
|
})();
|
|
|
|
|
|
|
|
var GrabToPan = (function GrabToPanClosure() {
|
|
/**
|
|
* Construct a GrabToPan instance for a given HTML element.
|
|
* @param options.element {Element}
|
|
* @param options.ignoreTarget {function} optional. See `ignoreTarget(node)`
|
|
* @param options.onActiveChanged {function(boolean)} optional. Called
|
|
* when grab-to-pan is (de)activated. The first argument is a boolean that
|
|
* shows whether grab-to-pan is activated.
|
|
*/
|
|
function GrabToPan(options) {
|
|
this.element = options.element;
|
|
this.document = options.element.ownerDocument;
|
|
if (typeof options.ignoreTarget === 'function') {
|
|
this.ignoreTarget = options.ignoreTarget;
|
|
}
|
|
this.onActiveChanged = options.onActiveChanged;
|
|
|
|
// Bind the contexts to ensure that `this` always points to
|
|
// the GrabToPan instance.
|
|
this.activate = this.activate.bind(this);
|
|
this.deactivate = this.deactivate.bind(this);
|
|
this.toggle = this.toggle.bind(this);
|
|
this._onmousedown = this._onmousedown.bind(this);
|
|
this._onmousemove = this._onmousemove.bind(this);
|
|
this._endPan = this._endPan.bind(this);
|
|
|
|
// This overlay will be inserted in the document when the mouse moves during
|
|
// a grab operation, to ensure that the cursor has the desired appearance.
|
|
var overlay = this.overlay = document.createElement('div');
|
|
overlay.className = 'grab-to-pan-grabbing';
|
|
}
|
|
GrabToPan.prototype = {
|
|
/**
|
|
* Class name of element which can be grabbed
|
|
*/
|
|
CSS_CLASS_GRAB: 'grab-to-pan-grab',
|
|
|
|
/**
|
|
* Bind a mousedown event to the element to enable grab-detection.
|
|
*/
|
|
activate: function GrabToPan_activate() {
|
|
if (!this.active) {
|
|
this.active = true;
|
|
this.element.addEventListener('mousedown', this._onmousedown, true);
|
|
this.element.classList.add(this.CSS_CLASS_GRAB);
|
|
if (this.onActiveChanged) {
|
|
this.onActiveChanged(true);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Removes all events. Any pending pan session is immediately stopped.
|
|
*/
|
|
deactivate: function GrabToPan_deactivate() {
|
|
if (this.active) {
|
|
this.active = false;
|
|
this.element.removeEventListener('mousedown', this._onmousedown, true);
|
|
this._endPan();
|
|
this.element.classList.remove(this.CSS_CLASS_GRAB);
|
|
if (this.onActiveChanged) {
|
|
this.onActiveChanged(false);
|
|
}
|
|
}
|
|
},
|
|
|
|
toggle: function GrabToPan_toggle() {
|
|
if (this.active) {
|
|
this.deactivate();
|
|
} else {
|
|
this.activate();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Whether to not pan if the target element is clicked.
|
|
* Override this method to change the default behaviour.
|
|
*
|
|
* @param node {Element} The target of the event
|
|
* @return {boolean} Whether to not react to the click event.
|
|
*/
|
|
ignoreTarget: function GrabToPan_ignoreTarget(node) {
|
|
// Use matchesSelector to check whether the clicked element
|
|
// is (a child of) an input element / link
|
|
return node[matchesSelector](
|
|
'a[href], a[href] *, input, textarea, button, button *, select, option'
|
|
);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_onmousedown: function GrabToPan__onmousedown(event) {
|
|
if (event.button !== 0 || this.ignoreTarget(event.target)) {
|
|
return;
|
|
}
|
|
if (event.originalTarget) {
|
|
try {
|
|
/* jshint expr:true */
|
|
event.originalTarget.tagName;
|
|
} catch (e) {
|
|
// Mozilla-specific: element is a scrollbar (XUL element)
|
|
return;
|
|
}
|
|
}
|
|
|
|
this.scrollLeftStart = this.element.scrollLeft;
|
|
this.scrollTopStart = this.element.scrollTop;
|
|
this.clientXStart = event.clientX;
|
|
this.clientYStart = event.clientY;
|
|
this.document.addEventListener('mousemove', this._onmousemove, true);
|
|
this.document.addEventListener('mouseup', this._endPan, true);
|
|
// When a scroll event occurs before a mousemove, assume that the user
|
|
// dragged a scrollbar (necessary for Opera Presto, Safari and IE)
|
|
// (not needed for Chrome/Firefox)
|
|
this.element.addEventListener('scroll', this._endPan, true);
|
|
event.preventDefault();
|
|
event.stopPropagation();
|
|
this.document.documentElement.classList.add(this.CSS_CLASS_GRABBING);
|
|
|
|
var focusedElement = document.activeElement;
|
|
if (focusedElement && !focusedElement.contains(event.target)) {
|
|
focusedElement.blur();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_onmousemove: function GrabToPan__onmousemove(event) {
|
|
this.element.removeEventListener('scroll', this._endPan, true);
|
|
if (isLeftMouseReleased(event)) {
|
|
this._endPan();
|
|
return;
|
|
}
|
|
var xDiff = event.clientX - this.clientXStart;
|
|
var yDiff = event.clientY - this.clientYStart;
|
|
this.element.scrollTop = this.scrollTopStart - yDiff;
|
|
this.element.scrollLeft = this.scrollLeftStart - xDiff;
|
|
if (!this.overlay.parentNode) {
|
|
document.body.appendChild(this.overlay);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_endPan: function GrabToPan__endPan() {
|
|
this.element.removeEventListener('scroll', this._endPan, true);
|
|
this.document.removeEventListener('mousemove', this._onmousemove, true);
|
|
this.document.removeEventListener('mouseup', this._endPan, true);
|
|
if (this.overlay.parentNode) {
|
|
this.overlay.parentNode.removeChild(this.overlay);
|
|
}
|
|
}
|
|
};
|
|
|
|
// Get the correct (vendor-prefixed) name of the matches method.
|
|
var matchesSelector;
|
|
['webkitM', 'mozM', 'msM', 'oM', 'm'].some(function(prefix) {
|
|
var name = prefix + 'atches';
|
|
if (name in document.documentElement) {
|
|
matchesSelector = name;
|
|
}
|
|
name += 'Selector';
|
|
if (name in document.documentElement) {
|
|
matchesSelector = name;
|
|
}
|
|
return matchesSelector; // If found, then truthy, and [].some() ends.
|
|
});
|
|
|
|
// Browser sniffing because it's impossible to feature-detect
|
|
// whether event.which for onmousemove is reliable
|
|
var isNotIEorIsIE10plus = !document.documentMode || document.documentMode > 9;
|
|
var chrome = window.chrome;
|
|
var isChrome15OrOpera15plus = chrome && (chrome.webstore || chrome.app);
|
|
// ^ Chrome 15+ ^ Opera 15+
|
|
var isSafari6plus = /Apple/.test(navigator.vendor) &&
|
|
/Version\/([6-9]\d*|[1-5]\d+)/.test(navigator.userAgent);
|
|
|
|
/**
|
|
* Whether the left mouse is not pressed.
|
|
* @param event {MouseEvent}
|
|
* @return {boolean} True if the left mouse button is not pressed.
|
|
* False if unsure or if the left mouse button is pressed.
|
|
*/
|
|
function isLeftMouseReleased(event) {
|
|
if ('buttons' in event && isNotIEorIsIE10plus) {
|
|
// http://www.w3.org/TR/DOM-Level-3-Events/#events-MouseEvent-buttons
|
|
// Firefox 15+
|
|
// Internet Explorer 10+
|
|
return !(event.buttons | 1);
|
|
}
|
|
if (isChrome15OrOpera15plus || isSafari6plus) {
|
|
// Chrome 14+
|
|
// Opera 15+
|
|
// Safari 6.0+
|
|
return event.which === 0;
|
|
}
|
|
}
|
|
|
|
return GrabToPan;
|
|
})();
|
|
|
|
var HandTool = {
|
|
initialize: function handToolInitialize(options) {
|
|
var toggleHandTool = options.toggleHandTool;
|
|
this.handTool = new GrabToPan({
|
|
element: options.container,
|
|
onActiveChanged: function(isActive) {
|
|
if (!toggleHandTool) {
|
|
return;
|
|
}
|
|
if (isActive) {
|
|
toggleHandTool.title = 'Disable hand tool';
|
|
toggleHandTool.firstElementChild.textContent = 'Disable hand tool';
|
|
} else {
|
|
toggleHandTool.title = 'Enable hand tool';
|
|
toggleHandTool.firstElementChild.textContent = 'Enable hand tool';
|
|
}
|
|
}
|
|
});
|
|
if (toggleHandTool) {
|
|
toggleHandTool.addEventListener('click', this.toggle.bind(this), false);
|
|
|
|
window.addEventListener('localized', function (evt) {
|
|
Preferences.get('enableHandToolOnLoad').then(function resolved(value) {
|
|
if (value) {
|
|
this.handTool.activate();
|
|
}
|
|
}.bind(this), function rejected(reason) {});
|
|
}.bind(this));
|
|
|
|
window.addEventListener('presentationmodechanged', function (evt) {
|
|
if (evt.detail.switchInProgress) {
|
|
return;
|
|
}
|
|
if (evt.detail.active) {
|
|
this.enterPresentationMode();
|
|
} else {
|
|
this.exitPresentationMode();
|
|
}
|
|
}.bind(this));
|
|
}
|
|
},
|
|
|
|
toggle: function handToolToggle() {
|
|
this.handTool.toggle();
|
|
SecondaryToolbar.close();
|
|
},
|
|
|
|
enterPresentationMode: function handToolEnterPresentationMode() {
|
|
if (this.handTool.active) {
|
|
this.wasActive = true;
|
|
this.handTool.deactivate();
|
|
}
|
|
},
|
|
|
|
exitPresentationMode: function handToolExitPresentationMode() {
|
|
if (this.wasActive) {
|
|
this.wasActive = null;
|
|
this.handTool.activate();
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
var OverlayManager = {
|
|
overlays: {},
|
|
active: null,
|
|
|
|
/**
|
|
* @param {string} name The name of the overlay that is registered. This must
|
|
* be equal to the ID of the overlay's DOM element.
|
|
* @param {function} callerCloseMethod (optional) The method that, if present,
|
|
* will call OverlayManager.close from the Object
|
|
* registering the overlay. Access to this method is
|
|
* necessary in order to run cleanup code when e.g.
|
|
* the overlay is force closed. The default is null.
|
|
* @param {boolean} canForceClose (optional) Indicates if opening the overlay
|
|
* will close an active overlay. The default is false.
|
|
* @returns {Promise} A promise that is resolved when the overlay has been
|
|
* registered.
|
|
*/
|
|
register: function overlayManagerRegister(name,
|
|
callerCloseMethod, canForceClose) {
|
|
return new Promise(function (resolve) {
|
|
var element, container;
|
|
if (!name || !(element = document.getElementById(name)) ||
|
|
!(container = element.parentNode)) {
|
|
throw new Error('Not enough parameters.');
|
|
} else if (this.overlays[name]) {
|
|
throw new Error('The overlay is already registered.');
|
|
}
|
|
this.overlays[name] = { element: element,
|
|
container: container,
|
|
callerCloseMethod: (callerCloseMethod || null),
|
|
canForceClose: (canForceClose || false) };
|
|
resolve();
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* @param {string} name The name of the overlay that is unregistered.
|
|
* @returns {Promise} A promise that is resolved when the overlay has been
|
|
* unregistered.
|
|
*/
|
|
unregister: function overlayManagerUnregister(name) {
|
|
return new Promise(function (resolve) {
|
|
if (!this.overlays[name]) {
|
|
throw new Error('The overlay does not exist.');
|
|
} else if (this.active === name) {
|
|
throw new Error('The overlay cannot be removed while it is active.');
|
|
}
|
|
delete this.overlays[name];
|
|
|
|
resolve();
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* @param {string} name The name of the overlay that should be opened.
|
|
* @returns {Promise} A promise that is resolved when the overlay has been
|
|
* opened.
|
|
*/
|
|
open: function overlayManagerOpen(name) {
|
|
return new Promise(function (resolve) {
|
|
if (!this.overlays[name]) {
|
|
throw new Error('The overlay does not exist.');
|
|
} else if (this.active) {
|
|
if (this.overlays[name].canForceClose) {
|
|
this._closeThroughCaller();
|
|
} else if (this.active === name) {
|
|
throw new Error('The overlay is already active.');
|
|
} else {
|
|
throw new Error('Another overlay is currently active.');
|
|
}
|
|
}
|
|
this.active = name;
|
|
this.overlays[this.active].element.classList.remove('hidden');
|
|
this.overlays[this.active].container.classList.remove('hidden');
|
|
|
|
window.addEventListener('keydown', this._keyDown);
|
|
resolve();
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* @param {string} name The name of the overlay that should be closed.
|
|
* @returns {Promise} A promise that is resolved when the overlay has been
|
|
* closed.
|
|
*/
|
|
close: function overlayManagerClose(name) {
|
|
return new Promise(function (resolve) {
|
|
if (!this.overlays[name]) {
|
|
throw new Error('The overlay does not exist.');
|
|
} else if (!this.active) {
|
|
throw new Error('The overlay is currently not active.');
|
|
} else if (this.active !== name) {
|
|
throw new Error('Another overlay is currently active.');
|
|
}
|
|
this.overlays[this.active].container.classList.add('hidden');
|
|
this.overlays[this.active].element.classList.add('hidden');
|
|
this.active = null;
|
|
|
|
window.removeEventListener('keydown', this._keyDown);
|
|
resolve();
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_keyDown: function overlayManager_keyDown(evt) {
|
|
var self = OverlayManager;
|
|
if (self.active && evt.keyCode === 27) { // Esc key.
|
|
self._closeThroughCaller();
|
|
evt.preventDefault();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_closeThroughCaller: function overlayManager_closeThroughCaller() {
|
|
if (this.overlays[this.active].callerCloseMethod) {
|
|
this.overlays[this.active].callerCloseMethod();
|
|
}
|
|
if (this.active) {
|
|
this.close(this.active);
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
var PasswordPrompt = {
|
|
overlayName: null,
|
|
updatePassword: null,
|
|
reason: null,
|
|
passwordField: null,
|
|
passwordText: null,
|
|
passwordSubmit: null,
|
|
passwordCancel: null,
|
|
|
|
initialize: function secondaryToolbarInitialize(options) {
|
|
this.overlayName = options.overlayName;
|
|
this.passwordField = options.passwordField;
|
|
this.passwordText = options.passwordText;
|
|
this.passwordSubmit = options.passwordSubmit;
|
|
this.passwordCancel = options.passwordCancel;
|
|
|
|
// Attach the event listeners.
|
|
this.passwordSubmit.addEventListener('click',
|
|
this.verifyPassword.bind(this));
|
|
|
|
this.passwordCancel.addEventListener('click', this.close.bind(this));
|
|
|
|
this.passwordField.addEventListener('keydown', function (e) {
|
|
if (e.keyCode === 13) { // Enter key
|
|
this.verifyPassword();
|
|
}
|
|
}.bind(this));
|
|
|
|
OverlayManager.register(this.overlayName, this.close.bind(this), true);
|
|
},
|
|
|
|
open: function passwordPromptOpen() {
|
|
OverlayManager.open(this.overlayName).then(function () {
|
|
this.passwordField.type = 'password';
|
|
this.passwordField.focus();
|
|
|
|
var promptString = 'Enter the password to open this PDF file.';
|
|
|
|
if (this.reason === PDFJS.PasswordResponses.INCORRECT_PASSWORD) {
|
|
promptString = 'Invalid password. Please try again.';
|
|
}
|
|
|
|
this.passwordText.textContent = promptString;
|
|
}.bind(this));
|
|
},
|
|
|
|
close: function passwordPromptClose() {
|
|
OverlayManager.close(this.overlayName).then(function () {
|
|
this.passwordField.value = '';
|
|
this.passwordField.type = '';
|
|
}.bind(this));
|
|
},
|
|
|
|
verifyPassword: function passwordPromptVerifyPassword() {
|
|
var password = this.passwordField.value;
|
|
if (password && password.length > 0) {
|
|
this.close();
|
|
return this.updatePassword(password);
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @typedef {Object} PDFDocumentPropertiesOptions
|
|
* @property {string} overlayName - Name/identifier for the overlay.
|
|
* @property {Object} fields - Names and elements of the overlay's fields.
|
|
* @property {HTMLButtonElement} closeButton - Button for closing the overlay.
|
|
*/
|
|
|
|
/**
|
|
* @class
|
|
*/
|
|
var PDFDocumentProperties = (function PDFDocumentPropertiesClosure() {
|
|
/**
|
|
* @constructs PDFDocumentProperties
|
|
* @param {PDFDocumentPropertiesOptions} options
|
|
*/
|
|
function PDFDocumentProperties(options) {
|
|
this.fields = options.fields;
|
|
this.overlayName = options.overlayName;
|
|
|
|
this.rawFileSize = 0;
|
|
this.url = null;
|
|
this.pdfDocument = null;
|
|
|
|
// Bind the event listener for the Close button.
|
|
if (options.closeButton) {
|
|
options.closeButton.addEventListener('click', this.close.bind(this));
|
|
}
|
|
|
|
this.dataAvailablePromise = new Promise(function (resolve) {
|
|
this.resolveDataAvailable = resolve;
|
|
}.bind(this));
|
|
|
|
OverlayManager.register(this.overlayName, this.close.bind(this));
|
|
}
|
|
|
|
PDFDocumentProperties.prototype = {
|
|
/**
|
|
* Open the document properties overlay.
|
|
*/
|
|
open: function PDFDocumentProperties_open() {
|
|
Promise.all([OverlayManager.open(this.overlayName),
|
|
this.dataAvailablePromise]).then(function () {
|
|
this._getProperties();
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* Close the document properties overlay.
|
|
*/
|
|
close: function PDFDocumentProperties_close() {
|
|
OverlayManager.close(this.overlayName);
|
|
},
|
|
|
|
/**
|
|
* Set the file size of the PDF document. This method is used to
|
|
* update the file size in the document properties overlay once it
|
|
* is known so we do not have to wait until the entire file is loaded.
|
|
*
|
|
* @param {number} fileSize - The file size of the PDF document.
|
|
*/
|
|
setFileSize: function PDFDocumentProperties_setFileSize(fileSize) {
|
|
if (fileSize > 0) {
|
|
this.rawFileSize = fileSize;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Set a reference to the PDF document and the URL in order
|
|
* to populate the overlay fields with the document properties.
|
|
* Note that the overlay will contain no information if this method
|
|
* is not called.
|
|
*
|
|
* @param {Object} pdfDocument - A reference to the PDF document.
|
|
* @param {string} url - The URL of the document.
|
|
*/
|
|
setDocumentAndUrl:
|
|
function PDFDocumentProperties_setDocumentAndUrl(pdfDocument, url) {
|
|
this.pdfDocument = pdfDocument;
|
|
this.url = url;
|
|
this.resolveDataAvailable();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getProperties: function PDFDocumentProperties_getProperties() {
|
|
if (!OverlayManager.active) {
|
|
// If the dialog was closed before dataAvailablePromise was resolved,
|
|
// don't bother updating the properties.
|
|
return;
|
|
}
|
|
// Get the file size (if it hasn't already been set).
|
|
this.pdfDocument.getDownloadInfo().then(function(data) {
|
|
if (data.length === this.rawFileSize) {
|
|
return;
|
|
}
|
|
this.setFileSize(data.length);
|
|
this._updateUI(this.fields['fileSize'], this._parseFileSize());
|
|
}.bind(this));
|
|
|
|
// Get the document properties.
|
|
this.pdfDocument.getMetadata().then(function(data) {
|
|
var content = {
|
|
'fileName': getPDFFileNameFromURL(this.url),
|
|
'fileSize': this._parseFileSize(),
|
|
'title': data.info.Title,
|
|
'author': data.info.Author,
|
|
'subject': data.info.Subject,
|
|
'keywords': data.info.Keywords,
|
|
'creationDate': this._parseDate(data.info.CreationDate),
|
|
'modificationDate': this._parseDate(data.info.ModDate),
|
|
'creator': data.info.Creator,
|
|
'producer': data.info.Producer,
|
|
'version': data.info.PDFFormatVersion,
|
|
'pageCount': this.pdfDocument.numPages
|
|
};
|
|
|
|
// Show the properties in the dialog.
|
|
for (var identifier in content) {
|
|
this._updateUI(this.fields[identifier], content[identifier]);
|
|
}
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_updateUI: function PDFDocumentProperties_updateUI(field, content) {
|
|
if (field && content !== undefined && content !== '') {
|
|
field.textContent = content;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_parseFileSize: function PDFDocumentProperties_parseFileSize() {
|
|
var fileSize = this.rawFileSize, kb = fileSize / 1024;
|
|
if (!kb) {
|
|
return;
|
|
} else if (kb < 1024) {
|
|
return kb + ' KB ' + size_b + ' bytes';
|
|
} else {
|
|
return (kb / 1024) + ' MB ' + size_b + ' bytes';
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_parseDate: function PDFDocumentProperties_parseDate(inputDate) {
|
|
// This is implemented according to the PDF specification, but note that
|
|
// Adobe Reader doesn't handle changing the date to universal time
|
|
// and doesn't use the user's time zone (they're effectively ignoring
|
|
// the HH' and mm' parts of the date string).
|
|
var dateToParse = inputDate;
|
|
if (dateToParse === undefined) {
|
|
return '';
|
|
}
|
|
|
|
// Remove the D: prefix if it is available.
|
|
if (dateToParse.substring(0,2) === 'D:') {
|
|
dateToParse = dateToParse.substring(2);
|
|
}
|
|
|
|
// Get all elements from the PDF date string.
|
|
// JavaScript's Date object expects the month to be between
|
|
// 0 and 11 instead of 1 and 12, so we're correcting for this.
|
|
var year = parseInt(dateToParse.substring(0,4), 10);
|
|
var month = parseInt(dateToParse.substring(4,6), 10) - 1;
|
|
var day = parseInt(dateToParse.substring(6,8), 10);
|
|
var hours = parseInt(dateToParse.substring(8,10), 10);
|
|
var minutes = parseInt(dateToParse.substring(10,12), 10);
|
|
var seconds = parseInt(dateToParse.substring(12,14), 10);
|
|
var utRel = dateToParse.substring(14,15);
|
|
var offsetHours = parseInt(dateToParse.substring(15,17), 10);
|
|
var offsetMinutes = parseInt(dateToParse.substring(18,20), 10);
|
|
|
|
// As per spec, utRel = 'Z' means equal to universal time.
|
|
// The other cases ('-' and '+') have to be handled here.
|
|
if (utRel === '-') {
|
|
hours += offsetHours;
|
|
minutes += offsetMinutes;
|
|
} else if (utRel === '+') {
|
|
hours -= offsetHours;
|
|
minutes -= offsetMinutes;
|
|
}
|
|
|
|
// Return the new date format from the user's locale.
|
|
var date = new Date(Date.UTC(year, month, day, hours, minutes, seconds));
|
|
var dateString = date.toLocaleDateString();
|
|
var timeString = date.toLocaleTimeString();
|
|
return dateString + ', ' + timeString;
|
|
}
|
|
};
|
|
|
|
return PDFDocumentProperties;
|
|
})();
|
|
|
|
|
|
var PresentationModeState = {
|
|
UNKNOWN: 0,
|
|
NORMAL: 1,
|
|
CHANGING: 2,
|
|
FULLSCREEN: 3,
|
|
};
|
|
|
|
var IGNORE_CURRENT_POSITION_ON_ZOOM = false;
|
|
var DEFAULT_CACHE_SIZE = 10;
|
|
|
|
|
|
var CLEANUP_TIMEOUT = 30000;
|
|
|
|
var RenderingStates = {
|
|
INITIAL: 0,
|
|
RUNNING: 1,
|
|
PAUSED: 2,
|
|
FINISHED: 3
|
|
};
|
|
|
|
/**
|
|
* Controls rendering of the views for pages and thumbnails.
|
|
* @class
|
|
*/
|
|
var PDFRenderingQueue = (function PDFRenderingQueueClosure() {
|
|
/**
|
|
* @constructs
|
|
*/
|
|
function PDFRenderingQueue() {
|
|
this.pdfViewer = null;
|
|
this.pdfThumbnailViewer = null;
|
|
this.onIdle = null;
|
|
|
|
this.highestPriorityPage = null;
|
|
this.idleTimeout = null;
|
|
this.printing = false;
|
|
this.isThumbnailViewEnabled = false;
|
|
}
|
|
|
|
PDFRenderingQueue.prototype = /** @lends PDFRenderingQueue.prototype */ {
|
|
/**
|
|
* @param {PDFViewer} pdfViewer
|
|
*/
|
|
setViewer: function PDFRenderingQueue_setViewer(pdfViewer) {
|
|
this.pdfViewer = pdfViewer;
|
|
},
|
|
|
|
/**
|
|
* @param {PDFThumbnailViewer} pdfThumbnailViewer
|
|
*/
|
|
setThumbnailViewer:
|
|
function PDFRenderingQueue_setThumbnailViewer(pdfThumbnailViewer) {
|
|
this.pdfThumbnailViewer = pdfThumbnailViewer;
|
|
},
|
|
|
|
/**
|
|
* @param {IRenderableView} view
|
|
* @returns {boolean}
|
|
*/
|
|
isHighestPriority: function PDFRenderingQueue_isHighestPriority(view) {
|
|
return this.highestPriorityPage === view.renderingId;
|
|
},
|
|
|
|
renderHighestPriority: function
|
|
PDFRenderingQueue_renderHighestPriority(currentlyVisiblePages) {
|
|
if (this.idleTimeout) {
|
|
clearTimeout(this.idleTimeout);
|
|
this.idleTimeout = null;
|
|
}
|
|
|
|
// Pages have a higher priority than thumbnails, so check them first.
|
|
if (this.pdfViewer.forceRendering(currentlyVisiblePages)) {
|
|
return;
|
|
}
|
|
// No pages needed rendering so check thumbnails.
|
|
if (this.pdfThumbnailViewer && this.isThumbnailViewEnabled) {
|
|
if (this.pdfThumbnailViewer.forceRendering()) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (this.printing) {
|
|
// If printing is currently ongoing do not reschedule cleanup.
|
|
return;
|
|
}
|
|
|
|
if (this.onIdle) {
|
|
this.idleTimeout = setTimeout(this.onIdle.bind(this), CLEANUP_TIMEOUT);
|
|
}
|
|
},
|
|
|
|
getHighestPriority: function
|
|
PDFRenderingQueue_getHighestPriority(visible, views, scrolledDown) {
|
|
// The state has changed figure out which page has the highest priority to
|
|
// render next (if any).
|
|
// Priority:
|
|
// 1 visible pages
|
|
// 2 if last scrolled down page after the visible pages
|
|
// 2 if last scrolled up page before the visible pages
|
|
var visibleViews = visible.views;
|
|
|
|
var numVisible = visibleViews.length;
|
|
if (numVisible === 0) {
|
|
return false;
|
|
}
|
|
for (var i = 0; i < numVisible; ++i) {
|
|
var view = visibleViews[i].view;
|
|
if (!this.isViewFinished(view)) {
|
|
return view;
|
|
}
|
|
}
|
|
|
|
// All the visible views have rendered, try to render next/previous pages.
|
|
if (scrolledDown) {
|
|
var nextPageIndex = visible.last.id;
|
|
// ID's start at 1 so no need to add 1.
|
|
if (views[nextPageIndex] &&
|
|
!this.isViewFinished(views[nextPageIndex])) {
|
|
return views[nextPageIndex];
|
|
}
|
|
} else {
|
|
var previousPageIndex = visible.first.id - 2;
|
|
if (views[previousPageIndex] &&
|
|
!this.isViewFinished(views[previousPageIndex])) {
|
|
return views[previousPageIndex];
|
|
}
|
|
}
|
|
// Everything that needs to be rendered has been.
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* @param {IRenderableView} view
|
|
* @returns {boolean}
|
|
*/
|
|
isViewFinished: function PDFRenderingQueue_isViewFinished(view) {
|
|
return view.renderingState === RenderingStates.FINISHED;
|
|
},
|
|
|
|
/**
|
|
* Render a page or thumbnail view. This calls the appropriate function
|
|
* based on the views state. If the view is already rendered it will return
|
|
* false.
|
|
* @param {IRenderableView} view
|
|
*/
|
|
renderView: function PDFRenderingQueue_renderView(view) {
|
|
var state = view.renderingState;
|
|
switch (state) {
|
|
case RenderingStates.FINISHED:
|
|
return false;
|
|
case RenderingStates.PAUSED:
|
|
this.highestPriorityPage = view.renderingId;
|
|
view.resume();
|
|
break;
|
|
case RenderingStates.RUNNING:
|
|
this.highestPriorityPage = view.renderingId;
|
|
break;
|
|
case RenderingStates.INITIAL:
|
|
this.highestPriorityPage = view.renderingId;
|
|
var continueRendering = function () {
|
|
this.renderHighestPriority();
|
|
}.bind(this);
|
|
view.draw().then(continueRendering, continueRendering);
|
|
break;
|
|
}
|
|
return true;
|
|
},
|
|
};
|
|
|
|
return PDFRenderingQueue;
|
|
})();
|
|
|
|
|
|
var TEXT_LAYER_RENDER_DELAY = 200; // ms
|
|
|
|
/**
|
|
* @typedef {Object} PDFPageViewOptions
|
|
* @property {HTMLDivElement} container - The viewer element.
|
|
* @property {number} id - The page unique ID (normally its number).
|
|
* @property {number} scale - The page scale display.
|
|
* @property {PageViewport} defaultViewport - The page viewport.
|
|
* @property {PDFRenderingQueue} renderingQueue - The rendering queue object.
|
|
* @property {IPDFTextLayerFactory} textLayerFactory
|
|
* @property {IPDFAnnotationLayerFactory} annotationLayerFactory
|
|
*/
|
|
|
|
/**
|
|
* @class
|
|
* @implements {IRenderableView}
|
|
*/
|
|
var PDFPageView = (function PDFPageViewClosure() {
|
|
/**
|
|
* @constructs PDFPageView
|
|
* @param {PDFPageViewOptions} options
|
|
*/
|
|
function PDFPageView(options) {
|
|
var container = options.container;
|
|
var id = options.id;
|
|
var scale = options.scale;
|
|
var defaultViewport = options.defaultViewport;
|
|
var renderingQueue = options.renderingQueue;
|
|
var textLayerFactory = options.textLayerFactory;
|
|
var annotationLayerFactory = options.annotationLayerFactory;
|
|
|
|
this.id = id;
|
|
this.renderingId = 'page' + id;
|
|
|
|
this.rotation = 0;
|
|
this.scale = scale || DEFAULT_SCALE;
|
|
this.viewport = defaultViewport;
|
|
this.pdfPageRotate = defaultViewport.rotation;
|
|
this.hasRestrictedScaling = false;
|
|
|
|
this.renderingQueue = renderingQueue;
|
|
this.textLayerFactory = textLayerFactory;
|
|
this.annotationLayerFactory = annotationLayerFactory;
|
|
|
|
this.renderingState = RenderingStates.INITIAL;
|
|
this.resume = null;
|
|
|
|
this.onBeforeDraw = null;
|
|
this.onAfterDraw = null;
|
|
|
|
this.textLayer = null;
|
|
|
|
this.zoomLayer = null;
|
|
|
|
this.annotationLayer = null;
|
|
|
|
var div = document.createElement('div');
|
|
div.id = 'pageContainer' + this.id;
|
|
div.className = 'page';
|
|
div.style.width = Math.floor(this.viewport.width) + 'px';
|
|
div.style.height = Math.floor(this.viewport.height) + 'px';
|
|
div.setAttribute('data-page-number', this.id);
|
|
this.div = div;
|
|
|
|
container.appendChild(div);
|
|
}
|
|
|
|
PDFPageView.prototype = {
|
|
setPdfPage: function PDFPageView_setPdfPage(pdfPage) {
|
|
this.pdfPage = pdfPage;
|
|
this.pdfPageRotate = pdfPage.rotate;
|
|
var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
|
|
this.viewport = pdfPage.getViewport(this.scale * CSS_UNITS,
|
|
totalRotation);
|
|
this.stats = pdfPage.stats;
|
|
this.reset();
|
|
},
|
|
|
|
destroy: function PDFPageView_destroy() {
|
|
this.zoomLayer = null;
|
|
this.reset();
|
|
if (this.pdfPage) {
|
|
this.pdfPage.cleanup();
|
|
}
|
|
},
|
|
|
|
reset: function PDFPageView_reset(keepZoomLayer, keepAnnotations) {
|
|
if (this.renderTask) {
|
|
this.renderTask.cancel();
|
|
}
|
|
this.resume = null;
|
|
this.renderingState = RenderingStates.INITIAL;
|
|
|
|
var div = this.div;
|
|
div.style.width = Math.floor(this.viewport.width) + 'px';
|
|
div.style.height = Math.floor(this.viewport.height) + 'px';
|
|
|
|
var childNodes = div.childNodes;
|
|
var currentZoomLayerNode = (keepZoomLayer && this.zoomLayer) || null;
|
|
var currentAnnotationNode = (keepAnnotations && this.annotationLayer &&
|
|
this.annotationLayer.div) || null;
|
|
for (var i = childNodes.length - 1; i >= 0; i--) {
|
|
var node = childNodes[i];
|
|
if (currentZoomLayerNode === node || currentAnnotationNode === node) {
|
|
continue;
|
|
}
|
|
div.removeChild(node);
|
|
}
|
|
div.removeAttribute('data-loaded');
|
|
|
|
if (currentAnnotationNode) {
|
|
// Hide annotationLayer until all elements are resized
|
|
// so they are not displayed on the already-resized page
|
|
this.annotationLayer.hide();
|
|
} else {
|
|
this.annotationLayer = null;
|
|
}
|
|
|
|
if (this.canvas && !currentZoomLayerNode) {
|
|
// Zeroing the width and height causes Firefox to release graphics
|
|
// resources immediately, which can greatly reduce memory consumption.
|
|
this.canvas.width = 0;
|
|
this.canvas.height = 0;
|
|
delete this.canvas;
|
|
}
|
|
|
|
this.loadingIconDiv = document.createElement('div');
|
|
this.loadingIconDiv.className = 'loadingIcon';
|
|
div.appendChild(this.loadingIconDiv);
|
|
},
|
|
|
|
update: function PDFPageView_update(scale, rotation) {
|
|
this.scale = scale || this.scale;
|
|
|
|
if (typeof rotation !== 'undefined') {
|
|
this.rotation = rotation;
|
|
}
|
|
|
|
var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
|
|
this.viewport = this.viewport.clone({
|
|
scale: this.scale * CSS_UNITS,
|
|
rotation: totalRotation
|
|
});
|
|
|
|
var isScalingRestricted = false;
|
|
if (this.canvas && PDFJS.maxCanvasPixels > 0) {
|
|
var outputScale = this.outputScale;
|
|
var pixelsInViewport = this.viewport.width * this.viewport.height;
|
|
var maxScale = Math.sqrt(PDFJS.maxCanvasPixels / pixelsInViewport);
|
|
if (((Math.floor(this.viewport.width) * outputScale.sx) | 0) *
|
|
((Math.floor(this.viewport.height) * outputScale.sy) | 0) >
|
|
PDFJS.maxCanvasPixels) {
|
|
isScalingRestricted = true;
|
|
}
|
|
}
|
|
|
|
if (this.canvas) {
|
|
if (PDFJS.useOnlyCssZoom ||
|
|
(this.hasRestrictedScaling && isScalingRestricted)) {
|
|
this.cssTransform(this.canvas, true);
|
|
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('pagerendered', true, true, {
|
|
pageNumber: this.id,
|
|
cssTransform: true,
|
|
});
|
|
this.div.dispatchEvent(event);
|
|
|
|
return;
|
|
}
|
|
if (!this.zoomLayer) {
|
|
this.zoomLayer = this.canvas.parentNode;
|
|
this.zoomLayer.style.position = 'absolute';
|
|
}
|
|
}
|
|
if (this.zoomLayer) {
|
|
this.cssTransform(this.zoomLayer.firstChild);
|
|
}
|
|
this.reset(/* keepZoomLayer = */ true, /* keepAnnotations = */ true);
|
|
},
|
|
|
|
/**
|
|
* Called when moved in the parent's container.
|
|
*/
|
|
updatePosition: function PDFPageView_updatePosition() {
|
|
if (this.textLayer) {
|
|
this.textLayer.render(TEXT_LAYER_RENDER_DELAY);
|
|
}
|
|
},
|
|
|
|
cssTransform: function PDFPageView_transform(canvas, redrawAnnotations) {
|
|
var CustomStyle = PDFJS.CustomStyle;
|
|
|
|
// Scale canvas, canvas wrapper, and page container.
|
|
var width = this.viewport.width;
|
|
var height = this.viewport.height;
|
|
var div = this.div;
|
|
canvas.style.width = canvas.parentNode.style.width = div.style.width =
|
|
Math.floor(width) + 'px';
|
|
canvas.style.height = canvas.parentNode.style.height = div.style.height =
|
|
Math.floor(height) + 'px';
|
|
// The canvas may have been originally rotated, rotate relative to that.
|
|
var relativeRotation = this.viewport.rotation - canvas._viewport.rotation;
|
|
var absRotation = Math.abs(relativeRotation);
|
|
var scaleX = 1, scaleY = 1;
|
|
if (absRotation === 90 || absRotation === 270) {
|
|
// Scale x and y because of the rotation.
|
|
scaleX = height / width;
|
|
scaleY = width / height;
|
|
}
|
|
var cssTransform = 'rotate(' + relativeRotation + 'deg) ' +
|
|
'scale(' + scaleX + ',' + scaleY + ')';
|
|
CustomStyle.setProp('transform', canvas, cssTransform);
|
|
|
|
if (this.textLayer) {
|
|
// Rotating the text layer is more complicated since the divs inside the
|
|
// the text layer are rotated.
|
|
// TODO: This could probably be simplified by drawing the text layer in
|
|
// one orientation then rotating overall.
|
|
var textLayerViewport = this.textLayer.viewport;
|
|
var textRelativeRotation = this.viewport.rotation -
|
|
textLayerViewport.rotation;
|
|
var textAbsRotation = Math.abs(textRelativeRotation);
|
|
var scale = width / textLayerViewport.width;
|
|
if (textAbsRotation === 90 || textAbsRotation === 270) {
|
|
scale = width / textLayerViewport.height;
|
|
}
|
|
var textLayerDiv = this.textLayer.textLayerDiv;
|
|
var transX, transY;
|
|
switch (textAbsRotation) {
|
|
case 0:
|
|
transX = transY = 0;
|
|
break;
|
|
case 90:
|
|
transX = 0;
|
|
transY = '-' + textLayerDiv.style.height;
|
|
break;
|
|
case 180:
|
|
transX = '-' + textLayerDiv.style.width;
|
|
transY = '-' + textLayerDiv.style.height;
|
|
break;
|
|
case 270:
|
|
transX = '-' + textLayerDiv.style.width;
|
|
transY = 0;
|
|
break;
|
|
default:
|
|
console.error('Bad rotation value.');
|
|
break;
|
|
}
|
|
CustomStyle.setProp('transform', textLayerDiv,
|
|
'rotate(' + textAbsRotation + 'deg) ' +
|
|
'scale(' + scale + ', ' + scale + ') ' +
|
|
'translate(' + transX + ', ' + transY + ')');
|
|
CustomStyle.setProp('transformOrigin', textLayerDiv, '0% 0%');
|
|
}
|
|
|
|
if (redrawAnnotations && this.annotationLayer) {
|
|
this.annotationLayer.render(this.viewport, 'display');
|
|
}
|
|
},
|
|
|
|
get width() {
|
|
return this.viewport.width;
|
|
},
|
|
|
|
get height() {
|
|
return this.viewport.height;
|
|
},
|
|
|
|
getPagePoint: function PDFPageView_getPagePoint(x, y) {
|
|
return this.viewport.convertToPdfPoint(x, y);
|
|
},
|
|
|
|
draw: function PDFPageView_draw() {
|
|
if (this.renderingState !== RenderingStates.INITIAL) {
|
|
console.error('Must be in new state before drawing');
|
|
}
|
|
|
|
this.renderingState = RenderingStates.RUNNING;
|
|
|
|
var pdfPage = this.pdfPage;
|
|
var viewport = this.viewport;
|
|
var div = this.div;
|
|
// Wrap the canvas so if it has a css transform for highdpi the overflow
|
|
// will be hidden in FF.
|
|
var canvasWrapper = document.createElement('div');
|
|
canvasWrapper.style.width = div.style.width;
|
|
canvasWrapper.style.height = div.style.height;
|
|
canvasWrapper.classList.add('canvasWrapper');
|
|
|
|
var canvas = document.createElement('canvas');
|
|
canvas.id = 'page' + this.id;
|
|
// Keep the canvas hidden until the first draw callback, or until drawing
|
|
// is complete when `!this.renderingQueue`, to prevent black flickering.
|
|
canvas.setAttribute('hidden', 'hidden');
|
|
var isCanvasHidden = true;
|
|
|
|
canvasWrapper.appendChild(canvas);
|
|
if (this.annotationLayer && this.annotationLayer.div) {
|
|
// annotationLayer needs to stay on top
|
|
div.insertBefore(canvasWrapper, this.annotationLayer.div);
|
|
} else {
|
|
div.appendChild(canvasWrapper);
|
|
}
|
|
this.canvas = canvas;
|
|
|
|
canvas.mozOpaque = true;
|
|
var ctx = canvas.getContext('2d', {alpha: false});
|
|
var outputScale = getOutputScale(ctx);
|
|
this.outputScale = outputScale;
|
|
|
|
if (PDFJS.useOnlyCssZoom) {
|
|
var actualSizeViewport = viewport.clone({scale: CSS_UNITS});
|
|
// Use a scale that will make the canvas be the original intended size
|
|
// of the page.
|
|
outputScale.sx *= actualSizeViewport.width / viewport.width;
|
|
outputScale.sy *= actualSizeViewport.height / viewport.height;
|
|
outputScale.scaled = true;
|
|
}
|
|
|
|
if (PDFJS.maxCanvasPixels > 0) {
|
|
var pixelsInViewport = viewport.width * viewport.height;
|
|
var maxScale = Math.sqrt(PDFJS.maxCanvasPixels / pixelsInViewport);
|
|
if (outputScale.sx > maxScale || outputScale.sy > maxScale) {
|
|
outputScale.sx = maxScale;
|
|
outputScale.sy = maxScale;
|
|
outputScale.scaled = true;
|
|
this.hasRestrictedScaling = true;
|
|
} else {
|
|
this.hasRestrictedScaling = false;
|
|
}
|
|
}
|
|
|
|
var sfx = approximateFraction(outputScale.sx);
|
|
var sfy = approximateFraction(outputScale.sy);
|
|
canvas.width = roundToDivide(viewport.width * outputScale.sx, sfx[0]);
|
|
canvas.height = roundToDivide(viewport.height * outputScale.sy, sfy[0]);
|
|
canvas.style.width = roundToDivide(viewport.width, sfx[1]) + 'px';
|
|
canvas.style.height = roundToDivide(viewport.height, sfy[1]) + 'px';
|
|
// Add the viewport so it's known what it was originally drawn with.
|
|
canvas._viewport = viewport;
|
|
|
|
var textLayerDiv = null;
|
|
var textLayer = null;
|
|
if (this.textLayerFactory) {
|
|
textLayerDiv = document.createElement('div');
|
|
textLayerDiv.className = 'textLayer';
|
|
textLayerDiv.style.width = canvasWrapper.style.width;
|
|
textLayerDiv.style.height = canvasWrapper.style.height;
|
|
if (this.annotationLayer && this.annotationLayer.div) {
|
|
// annotationLayer needs to stay on top
|
|
div.insertBefore(textLayerDiv, this.annotationLayer.div);
|
|
} else {
|
|
div.appendChild(textLayerDiv);
|
|
}
|
|
|
|
textLayer = this.textLayerFactory.createTextLayerBuilder(textLayerDiv,
|
|
this.id - 1,
|
|
this.viewport);
|
|
}
|
|
this.textLayer = textLayer;
|
|
|
|
var resolveRenderPromise, rejectRenderPromise;
|
|
var promise = new Promise(function (resolve, reject) {
|
|
resolveRenderPromise = resolve;
|
|
rejectRenderPromise = reject;
|
|
});
|
|
|
|
// Rendering area
|
|
|
|
var self = this;
|
|
function pageViewDrawCallback(error) {
|
|
// The renderTask may have been replaced by a new one, so only remove
|
|
// the reference to the renderTask if it matches the one that is
|
|
// triggering this callback.
|
|
if (renderTask === self.renderTask) {
|
|
self.renderTask = null;
|
|
}
|
|
|
|
if (error === 'cancelled') {
|
|
rejectRenderPromise(error);
|
|
return;
|
|
}
|
|
|
|
self.renderingState = RenderingStates.FINISHED;
|
|
|
|
if (isCanvasHidden) {
|
|
self.canvas.removeAttribute('hidden');
|
|
isCanvasHidden = false;
|
|
}
|
|
|
|
if (self.loadingIconDiv) {
|
|
div.removeChild(self.loadingIconDiv);
|
|
delete self.loadingIconDiv;
|
|
}
|
|
|
|
if (self.zoomLayer) {
|
|
// Zeroing the width and height causes Firefox to release graphics
|
|
// resources immediately, which can greatly reduce memory consumption.
|
|
var zoomLayerCanvas = self.zoomLayer.firstChild;
|
|
zoomLayerCanvas.width = 0;
|
|
zoomLayerCanvas.height = 0;
|
|
|
|
div.removeChild(self.zoomLayer);
|
|
self.zoomLayer = null;
|
|
}
|
|
|
|
self.error = error;
|
|
self.stats = pdfPage.stats;
|
|
if (self.onAfterDraw) {
|
|
self.onAfterDraw();
|
|
}
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('pagerendered', true, true, {
|
|
pageNumber: self.id,
|
|
cssTransform: false,
|
|
});
|
|
div.dispatchEvent(event);
|
|
// This custom event is deprecated, and will be removed in the future,
|
|
// please use the |pagerendered| event instead.
|
|
var deprecatedEvent = document.createEvent('CustomEvent');
|
|
deprecatedEvent.initCustomEvent('pagerender', true, true, {
|
|
pageNumber: pdfPage.pageNumber
|
|
});
|
|
div.dispatchEvent(deprecatedEvent);
|
|
|
|
if (!error) {
|
|
resolveRenderPromise(undefined);
|
|
} else {
|
|
rejectRenderPromise(error);
|
|
}
|
|
}
|
|
|
|
var renderContinueCallback = null;
|
|
if (this.renderingQueue) {
|
|
renderContinueCallback = function renderContinueCallback(cont) {
|
|
if (!self.renderingQueue.isHighestPriority(self)) {
|
|
self.renderingState = RenderingStates.PAUSED;
|
|
self.resume = function resumeCallback() {
|
|
self.renderingState = RenderingStates.RUNNING;
|
|
cont();
|
|
};
|
|
return;
|
|
}
|
|
if (isCanvasHidden) {
|
|
self.canvas.removeAttribute('hidden');
|
|
isCanvasHidden = false;
|
|
}
|
|
cont();
|
|
};
|
|
}
|
|
|
|
var transform = !outputScale.scaled ? null :
|
|
[outputScale.sx, 0, 0, outputScale.sy, 0, 0];
|
|
var renderContext = {
|
|
canvasContext: ctx,
|
|
transform: transform,
|
|
viewport: this.viewport,
|
|
// intent: 'default', // === 'display'
|
|
};
|
|
var renderTask = this.renderTask = this.pdfPage.render(renderContext);
|
|
renderTask.onContinue = renderContinueCallback;
|
|
|
|
this.renderTask.promise.then(
|
|
function pdfPageRenderCallback() {
|
|
pageViewDrawCallback(null);
|
|
if (textLayer) {
|
|
self.pdfPage.getTextContent({ normalizeWhitespace: true }).then(
|
|
function textContentResolved(textContent) {
|
|
textLayer.setTextContent(textContent);
|
|
textLayer.render(TEXT_LAYER_RENDER_DELAY);
|
|
}
|
|
);
|
|
}
|
|
},
|
|
function pdfPageRenderError(error) {
|
|
pageViewDrawCallback(error);
|
|
}
|
|
);
|
|
|
|
if (this.annotationLayerFactory) {
|
|
if (!this.annotationLayer) {
|
|
this.annotationLayer = this.annotationLayerFactory.
|
|
createAnnotationLayerBuilder(div, this.pdfPage);
|
|
}
|
|
this.annotationLayer.render(this.viewport, 'display');
|
|
}
|
|
div.setAttribute('data-loaded', true);
|
|
|
|
if (self.onBeforeDraw) {
|
|
self.onBeforeDraw();
|
|
}
|
|
return promise;
|
|
},
|
|
|
|
beforePrint: function PDFPageView_beforePrint() {
|
|
var CustomStyle = PDFJS.CustomStyle;
|
|
var pdfPage = this.pdfPage;
|
|
|
|
var viewport = pdfPage.getViewport(1);
|
|
// Use the same hack we use for high dpi displays for printing to get
|
|
// better output until bug 811002 is fixed in FF.
|
|
var PRINT_OUTPUT_SCALE = 2;
|
|
var canvas = document.createElement('canvas');
|
|
|
|
// The logical size of the canvas.
|
|
canvas.width = Math.floor(viewport.width) * PRINT_OUTPUT_SCALE;
|
|
canvas.height = Math.floor(viewport.height) * PRINT_OUTPUT_SCALE;
|
|
|
|
// The rendered size of the canvas, relative to the size of canvasWrapper.
|
|
canvas.style.width = (PRINT_OUTPUT_SCALE * 100) + '%';
|
|
canvas.style.height = (PRINT_OUTPUT_SCALE * 100) + '%';
|
|
|
|
var cssScale = 'scale(' + (1 / PRINT_OUTPUT_SCALE) + ', ' +
|
|
(1 / PRINT_OUTPUT_SCALE) + ')';
|
|
CustomStyle.setProp('transform' , canvas, cssScale);
|
|
CustomStyle.setProp('transformOrigin' , canvas, '0% 0%');
|
|
|
|
var printContainer = document.getElementById('printContainer');
|
|
var canvasWrapper = document.createElement('div');
|
|
canvasWrapper.style.width = viewport.width + 'pt';
|
|
canvasWrapper.style.height = viewport.height + 'pt';
|
|
canvasWrapper.appendChild(canvas);
|
|
printContainer.appendChild(canvasWrapper);
|
|
|
|
canvas.mozPrintCallback = function(obj) {
|
|
var ctx = obj.context;
|
|
|
|
ctx.save();
|
|
ctx.fillStyle = 'rgb(255, 255, 255)';
|
|
ctx.fillRect(0, 0, canvas.width, canvas.height);
|
|
ctx.restore();
|
|
// Used by the mozCurrentTransform polyfill in src/display/canvas.js.
|
|
ctx._transformMatrix =
|
|
[PRINT_OUTPUT_SCALE, 0, 0, PRINT_OUTPUT_SCALE, 0, 0];
|
|
ctx.scale(PRINT_OUTPUT_SCALE, PRINT_OUTPUT_SCALE);
|
|
|
|
var renderContext = {
|
|
canvasContext: ctx,
|
|
viewport: viewport,
|
|
intent: 'print'
|
|
};
|
|
|
|
pdfPage.render(renderContext).promise.then(function() {
|
|
// Tell the printEngine that rendering this canvas/page has finished.
|
|
obj.done();
|
|
}, function(error) {
|
|
console.error(error);
|
|
// Tell the printEngine that rendering this canvas/page has failed.
|
|
// This will make the print proces stop.
|
|
if ('abort' in obj) {
|
|
obj.abort();
|
|
} else {
|
|
obj.done();
|
|
}
|
|
});
|
|
};
|
|
},
|
|
};
|
|
|
|
return PDFPageView;
|
|
})();
|
|
|
|
|
|
/**
|
|
* @typedef {Object} TextLayerBuilderOptions
|
|
* @property {HTMLDivElement} textLayerDiv - The text layer container.
|
|
* @property {number} pageIndex - The page index.
|
|
* @property {PageViewport} viewport - The viewport of the text layer.
|
|
* @property {PDFFindController} findController
|
|
*/
|
|
|
|
/**
|
|
* TextLayerBuilder provides text-selection functionality for the PDF.
|
|
* It does this by creating overlay divs over the PDF text. These divs
|
|
* contain text that matches the PDF text they are overlaying. This object
|
|
* also provides a way to highlight text that is being searched for.
|
|
* @class
|
|
*/
|
|
var TextLayerBuilder = (function TextLayerBuilderClosure() {
|
|
function TextLayerBuilder(options) {
|
|
this.textLayerDiv = options.textLayerDiv;
|
|
this.renderingDone = false;
|
|
this.divContentDone = false;
|
|
this.pageIdx = options.pageIndex;
|
|
this.pageNumber = this.pageIdx + 1;
|
|
this.matches = [];
|
|
this.viewport = options.viewport;
|
|
this.textDivs = [];
|
|
this.findController = options.findController || null;
|
|
this.textLayerRenderTask = null;
|
|
this._bindMouse();
|
|
}
|
|
|
|
TextLayerBuilder.prototype = {
|
|
_finishRendering: function TextLayerBuilder_finishRendering() {
|
|
this.renderingDone = true;
|
|
|
|
var endOfContent = document.createElement('div');
|
|
endOfContent.className = 'endOfContent';
|
|
this.textLayerDiv.appendChild(endOfContent);
|
|
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('textlayerrendered', true, true, {
|
|
pageNumber: this.pageNumber
|
|
});
|
|
this.textLayerDiv.dispatchEvent(event);
|
|
},
|
|
|
|
/**
|
|
* Renders the text layer.
|
|
* @param {number} timeout (optional) if specified, the rendering waits
|
|
* for specified amount of ms.
|
|
*/
|
|
render: function TextLayerBuilder_render(timeout) {
|
|
if (!this.divContentDone || this.renderingDone) {
|
|
return;
|
|
}
|
|
|
|
if (this.textLayerRenderTask) {
|
|
this.textLayerRenderTask.cancel();
|
|
this.textLayerRenderTask = null;
|
|
}
|
|
|
|
this.textDivs = [];
|
|
var textLayerFrag = document.createDocumentFragment();
|
|
this.textLayerRenderTask = PDFJS.renderTextLayer({
|
|
textContent: this.textContent,
|
|
container: textLayerFrag,
|
|
viewport: this.viewport,
|
|
textDivs: this.textDivs,
|
|
timeout: timeout
|
|
});
|
|
this.textLayerRenderTask.promise.then(function () {
|
|
this.textLayerDiv.appendChild(textLayerFrag);
|
|
this._finishRendering();
|
|
this.updateMatches();
|
|
}.bind(this), function (reason) {
|
|
// canceled or failed to render text layer -- skipping errors
|
|
});
|
|
},
|
|
|
|
setTextContent: function TextLayerBuilder_setTextContent(textContent) {
|
|
if (this.textLayerRenderTask) {
|
|
this.textLayerRenderTask.cancel();
|
|
this.textLayerRenderTask = null;
|
|
}
|
|
this.textContent = textContent;
|
|
this.divContentDone = true;
|
|
},
|
|
|
|
convertMatches: function TextLayerBuilder_convertMatches(matches) {
|
|
var i = 0;
|
|
var iIndex = 0;
|
|
var bidiTexts = this.textContent.items;
|
|
var end = bidiTexts.length - 1;
|
|
var queryLen = (this.findController === null ?
|
|
0 : this.findController.state.query.length);
|
|
var ret = [];
|
|
|
|
for (var m = 0, len = matches.length; m < len; m++) {
|
|
// Calculate the start position.
|
|
var matchIdx = matches[m];
|
|
|
|
// Loop over the divIdxs.
|
|
while (i !== end && matchIdx >= (iIndex + bidiTexts[i].str.length)) {
|
|
iIndex += bidiTexts[i].str.length;
|
|
i++;
|
|
}
|
|
|
|
if (i === bidiTexts.length) {
|
|
console.error('Could not find a matching mapping');
|
|
}
|
|
|
|
var match = {
|
|
begin: {
|
|
divIdx: i,
|
|
offset: matchIdx - iIndex
|
|
}
|
|
};
|
|
|
|
// Calculate the end position.
|
|
matchIdx += queryLen;
|
|
|
|
// Somewhat the same array as above, but use > instead of >= to get
|
|
// the end position right.
|
|
while (i !== end && matchIdx > (iIndex + bidiTexts[i].str.length)) {
|
|
iIndex += bidiTexts[i].str.length;
|
|
i++;
|
|
}
|
|
|
|
match.end = {
|
|
divIdx: i,
|
|
offset: matchIdx - iIndex
|
|
};
|
|
ret.push(match);
|
|
}
|
|
|
|
return ret;
|
|
},
|
|
|
|
renderMatches: function TextLayerBuilder_renderMatches(matches) {
|
|
// Early exit if there is nothing to render.
|
|
if (matches.length === 0) {
|
|
return;
|
|
}
|
|
|
|
var bidiTexts = this.textContent.items;
|
|
var textDivs = this.textDivs;
|
|
var prevEnd = null;
|
|
var pageIdx = this.pageIdx;
|
|
var isSelectedPage = (this.findController === null ?
|
|
false : (pageIdx === this.findController.selected.pageIdx));
|
|
var selectedMatchIdx = (this.findController === null ?
|
|
-1 : this.findController.selected.matchIdx);
|
|
var highlightAll = (this.findController === null ?
|
|
false : this.findController.state.highlightAll);
|
|
var infinity = {
|
|
divIdx: -1,
|
|
offset: undefined
|
|
};
|
|
|
|
function beginText(begin, className) {
|
|
var divIdx = begin.divIdx;
|
|
textDivs[divIdx].textContent = '';
|
|
appendTextToDiv(divIdx, 0, begin.offset, className);
|
|
}
|
|
|
|
function appendTextToDiv(divIdx, fromOffset, toOffset, className) {
|
|
var div = textDivs[divIdx];
|
|
var content = bidiTexts[divIdx].str.substring(fromOffset, toOffset);
|
|
var node = document.createTextNode(content);
|
|
if (className) {
|
|
var span = document.createElement('span');
|
|
span.className = className;
|
|
span.appendChild(node);
|
|
div.appendChild(span);
|
|
return;
|
|
}
|
|
div.appendChild(node);
|
|
}
|
|
|
|
var i0 = selectedMatchIdx, i1 = i0 + 1;
|
|
if (highlightAll) {
|
|
i0 = 0;
|
|
i1 = matches.length;
|
|
} else if (!isSelectedPage) {
|
|
// Not highlighting all and this isn't the selected page, so do nothing.
|
|
return;
|
|
}
|
|
|
|
for (var i = i0; i < i1; i++) {
|
|
var match = matches[i];
|
|
var begin = match.begin;
|
|
var end = match.end;
|
|
var isSelected = (isSelectedPage && i === selectedMatchIdx);
|
|
var highlightSuffix = (isSelected ? ' selected' : '');
|
|
|
|
if (this.findController) {
|
|
this.findController.updateMatchPosition(pageIdx, i, textDivs,
|
|
begin.divIdx, end.divIdx);
|
|
}
|
|
|
|
// Match inside new div.
|
|
if (!prevEnd || begin.divIdx !== prevEnd.divIdx) {
|
|
// If there was a previous div, then add the text at the end.
|
|
if (prevEnd !== null) {
|
|
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
|
|
}
|
|
// Clear the divs and set the content until the starting point.
|
|
beginText(begin);
|
|
} else {
|
|
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, begin.offset);
|
|
}
|
|
|
|
if (begin.divIdx === end.divIdx) {
|
|
appendTextToDiv(begin.divIdx, begin.offset, end.offset,
|
|
'highlight' + highlightSuffix);
|
|
} else {
|
|
appendTextToDiv(begin.divIdx, begin.offset, infinity.offset,
|
|
'highlight begin' + highlightSuffix);
|
|
for (var n0 = begin.divIdx + 1, n1 = end.divIdx; n0 < n1; n0++) {
|
|
textDivs[n0].className = 'highlight middle' + highlightSuffix;
|
|
}
|
|
beginText(end, 'highlight end' + highlightSuffix);
|
|
}
|
|
prevEnd = end;
|
|
}
|
|
|
|
if (prevEnd) {
|
|
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
|
|
}
|
|
},
|
|
|
|
updateMatches: function TextLayerBuilder_updateMatches() {
|
|
// Only show matches when all rendering is done.
|
|
if (!this.renderingDone) {
|
|
return;
|
|
}
|
|
|
|
// Clear all matches.
|
|
var matches = this.matches;
|
|
var textDivs = this.textDivs;
|
|
var bidiTexts = this.textContent.items;
|
|
var clearedUntilDivIdx = -1;
|
|
|
|
// Clear all current matches.
|
|
for (var i = 0, len = matches.length; i < len; i++) {
|
|
var match = matches[i];
|
|
var begin = Math.max(clearedUntilDivIdx, match.begin.divIdx);
|
|
for (var n = begin, end = match.end.divIdx; n <= end; n++) {
|
|
var div = textDivs[n];
|
|
div.textContent = bidiTexts[n].str;
|
|
div.className = '';
|
|
}
|
|
clearedUntilDivIdx = match.end.divIdx + 1;
|
|
}
|
|
|
|
if (this.findController === null || !this.findController.active) {
|
|
return;
|
|
}
|
|
|
|
// Convert the matches on the page controller into the match format
|
|
// used for the textLayer.
|
|
this.matches = this.convertMatches(this.findController === null ?
|
|
[] : (this.findController.pageMatches[this.pageIdx] || []));
|
|
this.renderMatches(this.matches);
|
|
},
|
|
|
|
/**
|
|
* Fixes text selection: adds additional div where mouse was clicked.
|
|
* This reduces flickering of the content if mouse slowly dragged down/up.
|
|
* @private
|
|
*/
|
|
_bindMouse: function TextLayerBuilder_bindMouse() {
|
|
var div = this.textLayerDiv;
|
|
div.addEventListener('mousedown', function (e) {
|
|
var end = div.querySelector('.endOfContent');
|
|
if (!end) {
|
|
return;
|
|
}
|
|
// On non-Firefox browsers, the selection will feel better if the height
|
|
// of the endOfContent div will be adjusted to start at mouse click
|
|
// location -- this will avoid flickering when selections moves up.
|
|
// However it does not work when selection started on empty space.
|
|
var adjustTop = e.target !== div;
|
|
adjustTop = adjustTop && window.getComputedStyle(end).
|
|
getPropertyValue('-moz-user-select') !== 'none';
|
|
if (adjustTop) {
|
|
var divBounds = div.getBoundingClientRect();
|
|
var r = Math.max(0, (e.pageY - divBounds.top) / divBounds.height);
|
|
end.style.top = (r * 100).toFixed(2) + '%';
|
|
}
|
|
end.classList.add('active');
|
|
});
|
|
div.addEventListener('mouseup', function (e) {
|
|
var end = div.querySelector('.endOfContent');
|
|
if (!end) {
|
|
return;
|
|
}
|
|
end.style.top = '';
|
|
end.classList.remove('active');
|
|
});
|
|
},
|
|
};
|
|
return TextLayerBuilder;
|
|
})();
|
|
|
|
/**
|
|
* @constructor
|
|
* @implements IPDFTextLayerFactory
|
|
*/
|
|
function DefaultTextLayerFactory() {}
|
|
DefaultTextLayerFactory.prototype = {
|
|
/**
|
|
* @param {HTMLDivElement} textLayerDiv
|
|
* @param {number} pageIndex
|
|
* @param {PageViewport} viewport
|
|
* @returns {TextLayerBuilder}
|
|
*/
|
|
createTextLayerBuilder: function (textLayerDiv, pageIndex, viewport) {
|
|
return new TextLayerBuilder({
|
|
textLayerDiv: textLayerDiv,
|
|
pageIndex: pageIndex,
|
|
viewport: viewport
|
|
});
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @typedef {Object} AnnotationLayerBuilderOptions
|
|
* @property {HTMLDivElement} pageDiv
|
|
* @property {PDFPage} pdfPage
|
|
* @property {IPDFLinkService} linkService
|
|
*/
|
|
|
|
/**
|
|
* @class
|
|
*/
|
|
var AnnotationLayerBuilder = (function AnnotationLayerBuilderClosure() {
|
|
/**
|
|
* @param {AnnotationLayerBuilderOptions} options
|
|
* @constructs AnnotationLayerBuilder
|
|
*/
|
|
function AnnotationLayerBuilder(options) {
|
|
this.pageDiv = options.pageDiv;
|
|
this.pdfPage = options.pdfPage;
|
|
this.linkService = options.linkService;
|
|
|
|
this.div = null;
|
|
}
|
|
|
|
AnnotationLayerBuilder.prototype =
|
|
/** @lends AnnotationLayerBuilder.prototype */ {
|
|
|
|
/**
|
|
* @param {PageViewport} viewport
|
|
* @param {string} intent (default value is 'display')
|
|
*/
|
|
render: function AnnotationLayerBuilder_render(viewport, intent) {
|
|
var self = this;
|
|
var parameters = {
|
|
intent: (intent === undefined ? 'display' : intent),
|
|
};
|
|
|
|
this.pdfPage.getAnnotations(parameters).then(function (annotations) {
|
|
viewport = viewport.clone({ dontFlip: true });
|
|
parameters = {
|
|
viewport: viewport,
|
|
div: self.div,
|
|
annotations: annotations,
|
|
page: self.pdfPage,
|
|
linkService: self.linkService
|
|
};
|
|
|
|
if (self.div) {
|
|
// If an annotationLayer already exists, refresh its children's
|
|
// transformation matrices.
|
|
PDFJS.AnnotationLayer.update(parameters);
|
|
} else {
|
|
// Create an annotation layer div and render the annotations
|
|
// if there is at least one annotation.
|
|
if (annotations.length === 0) {
|
|
return;
|
|
}
|
|
|
|
self.div = document.createElement('div');
|
|
self.div.className = 'annotationLayer';
|
|
self.pageDiv.appendChild(self.div);
|
|
parameters.div = self.div;
|
|
|
|
PDFJS.AnnotationLayer.render(parameters);
|
|
}
|
|
});
|
|
},
|
|
|
|
hide: function AnnotationLayerBuilder_hide() {
|
|
if (!this.div) {
|
|
return;
|
|
}
|
|
this.div.setAttribute('hidden', 'true');
|
|
}
|
|
};
|
|
|
|
return AnnotationLayerBuilder;
|
|
})();
|
|
|
|
/**
|
|
* @constructor
|
|
* @implements IPDFAnnotationLayerFactory
|
|
*/
|
|
function DefaultAnnotationLayerFactory() {}
|
|
DefaultAnnotationLayerFactory.prototype = {
|
|
/**
|
|
* @param {HTMLDivElement} pageDiv
|
|
* @param {PDFPage} pdfPage
|
|
* @returns {AnnotationLayerBuilder}
|
|
*/
|
|
createAnnotationLayerBuilder: function (pageDiv, pdfPage) {
|
|
return new AnnotationLayerBuilder({
|
|
pageDiv: pageDiv,
|
|
pdfPage: pdfPage,
|
|
linkService: new SimpleLinkService(),
|
|
});
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @typedef {Object} PDFViewerOptions
|
|
* @property {HTMLDivElement} container - The container for the viewer element.
|
|
* @property {HTMLDivElement} viewer - (optional) The viewer element.
|
|
* @property {IPDFLinkService} linkService - The navigation/linking service.
|
|
* @property {PDFRenderingQueue} renderingQueue - (optional) The rendering
|
|
* queue object.
|
|
* @property {boolean} removePageBorders - (optional) Removes the border shadow
|
|
* around the pages. The default is false.
|
|
*/
|
|
|
|
/**
|
|
* Simple viewer control to display PDF content/pages.
|
|
* @class
|
|
* @implements {IRenderableView}
|
|
*/
|
|
var PDFViewer = (function pdfViewer() {
|
|
function PDFPageViewBuffer(size) {
|
|
var data = [];
|
|
this.push = function cachePush(view) {
|
|
var i = data.indexOf(view);
|
|
if (i >= 0) {
|
|
data.splice(i, 1);
|
|
}
|
|
data.push(view);
|
|
if (data.length > size) {
|
|
data.shift().destroy();
|
|
}
|
|
};
|
|
this.resize = function (newSize) {
|
|
size = newSize;
|
|
while (data.length > size) {
|
|
data.shift().destroy();
|
|
}
|
|
};
|
|
}
|
|
|
|
function isSameScale(oldScale, newScale) {
|
|
if (newScale === oldScale) {
|
|
return true;
|
|
}
|
|
if (Math.abs(newScale - oldScale) < 1e-15) {
|
|
// Prevent unnecessary re-rendering of all pages when the scale
|
|
// changes only because of limited numerical precision.
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @constructs PDFViewer
|
|
* @param {PDFViewerOptions} options
|
|
*/
|
|
function PDFViewer(options) {
|
|
this.container = options.container;
|
|
this.viewer = options.viewer || options.container.firstElementChild;
|
|
this.linkService = options.linkService || new SimpleLinkService();
|
|
this.removePageBorders = options.removePageBorders || false;
|
|
|
|
this.defaultRenderingQueue = !options.renderingQueue;
|
|
if (this.defaultRenderingQueue) {
|
|
// Custom rendering queue is not specified, using default one
|
|
this.renderingQueue = new PDFRenderingQueue();
|
|
this.renderingQueue.setViewer(this);
|
|
} else {
|
|
this.renderingQueue = options.renderingQueue;
|
|
}
|
|
|
|
this.scroll = watchScroll(this.container, this._scrollUpdate.bind(this));
|
|
this.updateInProgress = false;
|
|
this.presentationModeState = PresentationModeState.UNKNOWN;
|
|
this._resetView();
|
|
|
|
if (this.removePageBorders) {
|
|
this.viewer.classList.add('removePageBorders');
|
|
}
|
|
}
|
|
|
|
PDFViewer.prototype = /** @lends PDFViewer.prototype */{
|
|
get pagesCount() {
|
|
return this._pages.length;
|
|
},
|
|
|
|
getPageView: function (index) {
|
|
return this._pages[index];
|
|
},
|
|
|
|
get currentPageNumber() {
|
|
return this._currentPageNumber;
|
|
},
|
|
|
|
set currentPageNumber(val) {
|
|
if (!this.pdfDocument) {
|
|
this._currentPageNumber = val;
|
|
return;
|
|
}
|
|
|
|
var event = document.createEvent('UIEvents');
|
|
event.initUIEvent('pagechange', true, true, window, 0);
|
|
event.updateInProgress = this.updateInProgress;
|
|
|
|
if (!(0 < val && val <= this.pagesCount)) {
|
|
event.pageNumber = this._currentPageNumber;
|
|
event.previousPageNumber = val;
|
|
this.container.dispatchEvent(event);
|
|
return;
|
|
}
|
|
|
|
event.previousPageNumber = this._currentPageNumber;
|
|
this._currentPageNumber = val;
|
|
event.pageNumber = val;
|
|
this.container.dispatchEvent(event);
|
|
|
|
// Check if the caller is `PDFViewer_update`, to avoid breaking scrolling.
|
|
if (this.updateInProgress) {
|
|
return;
|
|
}
|
|
this.scrollPageIntoView(val);
|
|
},
|
|
|
|
/**
|
|
* @returns {number}
|
|
*/
|
|
get currentScale() {
|
|
return this._currentScale !== UNKNOWN_SCALE ? this._currentScale :
|
|
DEFAULT_SCALE;
|
|
},
|
|
|
|
/**
|
|
* @param {number} val - Scale of the pages in percents.
|
|
*/
|
|
set currentScale(val) {
|
|
if (isNaN(val)) {
|
|
throw new Error('Invalid numeric scale');
|
|
}
|
|
if (!this.pdfDocument) {
|
|
this._currentScale = val;
|
|
this._currentScaleValue = val !== UNKNOWN_SCALE ? val.toString() : null;
|
|
return;
|
|
}
|
|
this._setScale(val, false);
|
|
},
|
|
|
|
/**
|
|
* @returns {string}
|
|
*/
|
|
get currentScaleValue() {
|
|
return this._currentScaleValue;
|
|
},
|
|
|
|
/**
|
|
* @param val - The scale of the pages (in percent or predefined value).
|
|
*/
|
|
set currentScaleValue(val) {
|
|
if (!this.pdfDocument) {
|
|
this._currentScale = isNaN(val) ? UNKNOWN_SCALE : val;
|
|
this._currentScaleValue = val;
|
|
return;
|
|
}
|
|
this._setScale(val, false);
|
|
},
|
|
|
|
/**
|
|
* @returns {number}
|
|
*/
|
|
get pagesRotation() {
|
|
return this._pagesRotation;
|
|
},
|
|
|
|
/**
|
|
* @param {number} rotation - The rotation of the pages (0, 90, 180, 270).
|
|
*/
|
|
set pagesRotation(rotation) {
|
|
this._pagesRotation = rotation;
|
|
|
|
for (var i = 0, l = this._pages.length; i < l; i++) {
|
|
var pageView = this._pages[i];
|
|
pageView.update(pageView.scale, rotation);
|
|
}
|
|
|
|
this._setScale(this._currentScaleValue, true);
|
|
|
|
if (this.defaultRenderingQueue) {
|
|
this.update();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @param pdfDocument {PDFDocument}
|
|
*/
|
|
setDocument: function (pdfDocument) {
|
|
if (this.pdfDocument) {
|
|
this._resetView();
|
|
}
|
|
|
|
this.pdfDocument = pdfDocument;
|
|
if (!pdfDocument) {
|
|
return;
|
|
}
|
|
|
|
var pagesCount = pdfDocument.numPages;
|
|
var self = this;
|
|
|
|
var resolvePagesPromise;
|
|
var pagesPromise = new Promise(function (resolve) {
|
|
resolvePagesPromise = resolve;
|
|
});
|
|
this.pagesPromise = pagesPromise;
|
|
pagesPromise.then(function () {
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('pagesloaded', true, true, {
|
|
pagesCount: pagesCount
|
|
});
|
|
self.container.dispatchEvent(event);
|
|
});
|
|
|
|
var isOnePageRenderedResolved = false;
|
|
var resolveOnePageRendered = null;
|
|
var onePageRendered = new Promise(function (resolve) {
|
|
resolveOnePageRendered = resolve;
|
|
});
|
|
this.onePageRendered = onePageRendered;
|
|
|
|
var bindOnAfterAndBeforeDraw = function (pageView) {
|
|
pageView.onBeforeDraw = function pdfViewLoadOnBeforeDraw() {
|
|
// Add the page to the buffer at the start of drawing. That way it can
|
|
// be evicted from the buffer and destroyed even if we pause its
|
|
// rendering.
|
|
self._buffer.push(this);
|
|
};
|
|
// when page is painted, using the image as thumbnail base
|
|
pageView.onAfterDraw = function pdfViewLoadOnAfterDraw() {
|
|
if (!isOnePageRenderedResolved) {
|
|
isOnePageRenderedResolved = true;
|
|
resolveOnePageRendered();
|
|
}
|
|
};
|
|
};
|
|
|
|
var firstPagePromise = pdfDocument.getPage(1);
|
|
this.firstPagePromise = firstPagePromise;
|
|
|
|
// Fetch a single page so we can get a viewport that will be the default
|
|
// viewport for all pages
|
|
return firstPagePromise.then(function(pdfPage) {
|
|
var scale = this.currentScale;
|
|
var viewport = pdfPage.getViewport(scale * CSS_UNITS);
|
|
for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
|
|
var textLayerFactory = null;
|
|
if (!PDFJS.disableTextLayer) {
|
|
textLayerFactory = this;
|
|
}
|
|
var pageView = new PDFPageView({
|
|
container: this.viewer,
|
|
id: pageNum,
|
|
scale: scale,
|
|
defaultViewport: viewport.clone(),
|
|
renderingQueue: this.renderingQueue,
|
|
textLayerFactory: textLayerFactory,
|
|
annotationLayerFactory: this
|
|
});
|
|
bindOnAfterAndBeforeDraw(pageView);
|
|
this._pages.push(pageView);
|
|
}
|
|
|
|
var linkService = this.linkService;
|
|
|
|
// Fetch all the pages since the viewport is needed before printing
|
|
// starts to create the correct size canvas. Wait until one page is
|
|
// rendered so we don't tie up too many resources early on.
|
|
onePageRendered.then(function () {
|
|
if (!PDFJS.disableAutoFetch) {
|
|
var getPagesLeft = pagesCount;
|
|
for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
|
|
pdfDocument.getPage(pageNum).then(function (pageNum, pdfPage) {
|
|
var pageView = self._pages[pageNum - 1];
|
|
if (!pageView.pdfPage) {
|
|
pageView.setPdfPage(pdfPage);
|
|
}
|
|
linkService.cachePageRef(pageNum, pdfPage.ref);
|
|
getPagesLeft--;
|
|
if (!getPagesLeft) {
|
|
resolvePagesPromise();
|
|
}
|
|
}.bind(null, pageNum));
|
|
}
|
|
} else {
|
|
// XXX: Printing is semi-broken with auto fetch disabled.
|
|
resolvePagesPromise();
|
|
}
|
|
});
|
|
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('pagesinit', true, true, null);
|
|
self.container.dispatchEvent(event);
|
|
|
|
if (this.defaultRenderingQueue) {
|
|
this.update();
|
|
}
|
|
|
|
if (this.findController) {
|
|
this.findController.resolveFirstPage();
|
|
}
|
|
}.bind(this));
|
|
},
|
|
|
|
_resetView: function () {
|
|
this._pages = [];
|
|
this._currentPageNumber = 1;
|
|
this._currentScale = UNKNOWN_SCALE;
|
|
this._currentScaleValue = null;
|
|
this._buffer = new PDFPageViewBuffer(DEFAULT_CACHE_SIZE);
|
|
this._location = null;
|
|
this._pagesRotation = 0;
|
|
this._pagesRequests = [];
|
|
|
|
var container = this.viewer;
|
|
while (container.hasChildNodes()) {
|
|
container.removeChild(container.lastChild);
|
|
}
|
|
},
|
|
|
|
_scrollUpdate: function PDFViewer_scrollUpdate() {
|
|
if (this.pagesCount === 0) {
|
|
return;
|
|
}
|
|
this.update();
|
|
for (var i = 0, ii = this._pages.length; i < ii; i++) {
|
|
this._pages[i].updatePosition();
|
|
}
|
|
},
|
|
|
|
_setScaleDispatchEvent: function pdfViewer_setScaleDispatchEvent(
|
|
newScale, newValue, preset) {
|
|
var event = document.createEvent('UIEvents');
|
|
event.initUIEvent('scalechange', true, true, window, 0);
|
|
event.scale = newScale;
|
|
if (preset) {
|
|
event.presetValue = newValue;
|
|
}
|
|
this.container.dispatchEvent(event);
|
|
},
|
|
|
|
_setScaleUpdatePages: function pdfViewer_setScaleUpdatePages(
|
|
newScale, newValue, noScroll, preset) {
|
|
this._currentScaleValue = newValue;
|
|
|
|
if (isSameScale(this._currentScale, newScale)) {
|
|
if (preset) {
|
|
this._setScaleDispatchEvent(newScale, newValue, true);
|
|
}
|
|
return;
|
|
}
|
|
|
|
for (var i = 0, ii = this._pages.length; i < ii; i++) {
|
|
this._pages[i].update(newScale);
|
|
}
|
|
this._currentScale = newScale;
|
|
|
|
if (!noScroll) {
|
|
var page = this._currentPageNumber, dest;
|
|
if (this._location && !IGNORE_CURRENT_POSITION_ON_ZOOM &&
|
|
!(this.isInPresentationMode || this.isChangingPresentationMode)) {
|
|
page = this._location.pageNumber;
|
|
dest = [null, { name: 'XYZ' }, this._location.left,
|
|
this._location.top, null];
|
|
}
|
|
this.scrollPageIntoView(page, dest);
|
|
}
|
|
|
|
this._setScaleDispatchEvent(newScale, newValue, preset);
|
|
|
|
if (this.defaultRenderingQueue) {
|
|
this.update();
|
|
}
|
|
},
|
|
|
|
_setScale: function pdfViewer_setScale(value, noScroll) {
|
|
var scale = parseFloat(value);
|
|
|
|
if (scale > 0) {
|
|
this._setScaleUpdatePages(scale, value, noScroll, false);
|
|
} else {
|
|
var currentPage = this._pages[this._currentPageNumber - 1];
|
|
if (!currentPage) {
|
|
return;
|
|
}
|
|
var hPadding = (this.isInPresentationMode || this.removePageBorders) ?
|
|
0 : SCROLLBAR_PADDING;
|
|
var vPadding = (this.isInPresentationMode || this.removePageBorders) ?
|
|
0 : VERTICAL_PADDING;
|
|
var pageWidthScale = (this.container.clientWidth - hPadding) /
|
|
currentPage.width * currentPage.scale;
|
|
var pageHeightScale = (this.container.clientHeight - vPadding) /
|
|
currentPage.height * currentPage.scale;
|
|
switch (value) {
|
|
case 'page-actual':
|
|
scale = 1;
|
|
break;
|
|
case 'page-width':
|
|
scale = pageWidthScale;
|
|
break;
|
|
case 'page-height':
|
|
scale = pageHeightScale;
|
|
break;
|
|
case 'page-fit':
|
|
scale = Math.min(pageWidthScale, pageHeightScale);
|
|
break;
|
|
case 'auto':
|
|
var isLandscape = (currentPage.width > currentPage.height);
|
|
// For pages in landscape mode, fit the page height to the viewer
|
|
// *unless* the page would thus become too wide to fit horizontally.
|
|
var horizontalScale = isLandscape ?
|
|
Math.min(pageHeightScale, pageWidthScale) : pageWidthScale;
|
|
scale = Math.min(MAX_AUTO_SCALE, horizontalScale);
|
|
break;
|
|
default:
|
|
console.error('pdfViewSetScale: \'' + value +
|
|
'\' is an unknown zoom value.');
|
|
return;
|
|
}
|
|
this._setScaleUpdatePages(scale, value, noScroll, true);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Scrolls page into view.
|
|
* @param {number} pageNumber
|
|
* @param {Array} dest - (optional) original PDF destination array:
|
|
* <page-ref> </XYZ|FitXXX> <args..>
|
|
*/
|
|
scrollPageIntoView: function PDFViewer_scrollPageIntoView(pageNumber,
|
|
dest) {
|
|
if (!this.pdfDocument) {
|
|
return;
|
|
}
|
|
|
|
var pageView = this._pages[pageNumber - 1];
|
|
|
|
if (this.isInPresentationMode) {
|
|
if (this._currentPageNumber !== pageView.id) {
|
|
// Avoid breaking getVisiblePages in presentation mode.
|
|
this.currentPageNumber = pageView.id;
|
|
return;
|
|
}
|
|
dest = null;
|
|
// Fixes the case when PDF has different page sizes.
|
|
this._setScale(this._currentScaleValue, true);
|
|
}
|
|
if (!dest) {
|
|
scrollIntoView(pageView.div);
|
|
return;
|
|
}
|
|
|
|
var x = 0, y = 0;
|
|
var width = 0, height = 0, widthScale, heightScale;
|
|
var changeOrientation = (pageView.rotation % 180 === 0 ? false : true);
|
|
var pageWidth = (changeOrientation ? pageView.height : pageView.width) /
|
|
pageView.scale / CSS_UNITS;
|
|
var pageHeight = (changeOrientation ? pageView.width : pageView.height) /
|
|
pageView.scale / CSS_UNITS;
|
|
var scale = 0;
|
|
switch (dest[1].name) {
|
|
case 'XYZ':
|
|
x = dest[2];
|
|
y = dest[3];
|
|
scale = dest[4];
|
|
// If x and/or y coordinates are not supplied, default to
|
|
// _top_ left of the page (not the obvious bottom left,
|
|
// since aligning the bottom of the intended page with the
|
|
// top of the window is rarely helpful).
|
|
x = x !== null ? x : 0;
|
|
y = y !== null ? y : pageHeight;
|
|
break;
|
|
case 'Fit':
|
|
case 'FitB':
|
|
scale = 'page-fit';
|
|
break;
|
|
case 'FitH':
|
|
case 'FitBH':
|
|
y = dest[2];
|
|
scale = 'page-width';
|
|
// According to the PDF spec, section 12.3.2.2, a `null` value in the
|
|
// parameter should maintain the position relative to the new page.
|
|
if (y === null && this._location) {
|
|
x = this._location.left;
|
|
y = this._location.top;
|
|
}
|
|
break;
|
|
case 'FitV':
|
|
case 'FitBV':
|
|
x = dest[2];
|
|
width = pageWidth;
|
|
height = pageHeight;
|
|
scale = 'page-height';
|
|
break;
|
|
case 'FitR':
|
|
x = dest[2];
|
|
y = dest[3];
|
|
width = dest[4] - x;
|
|
height = dest[5] - y;
|
|
var hPadding = this.removePageBorders ? 0 : SCROLLBAR_PADDING;
|
|
var vPadding = this.removePageBorders ? 0 : VERTICAL_PADDING;
|
|
|
|
widthScale = (this.container.clientWidth - hPadding) /
|
|
width / CSS_UNITS;
|
|
heightScale = (this.container.clientHeight - vPadding) /
|
|
height / CSS_UNITS;
|
|
scale = Math.min(Math.abs(widthScale), Math.abs(heightScale));
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
if (scale && scale !== this._currentScale) {
|
|
this.currentScaleValue = scale;
|
|
} else if (this._currentScale === UNKNOWN_SCALE) {
|
|
this.currentScaleValue = DEFAULT_SCALE_VALUE;
|
|
}
|
|
|
|
if (scale === 'page-fit' && !dest[4]) {
|
|
scrollIntoView(pageView.div);
|
|
return;
|
|
}
|
|
|
|
var boundingRect = [
|
|
pageView.viewport.convertToViewportPoint(x, y),
|
|
pageView.viewport.convertToViewportPoint(x + width, y + height)
|
|
];
|
|
var left = Math.min(boundingRect[0][0], boundingRect[1][0]);
|
|
var top = Math.min(boundingRect[0][1], boundingRect[1][1]);
|
|
|
|
scrollIntoView(pageView.div, { left: left, top: top });
|
|
},
|
|
|
|
_updateLocation: function (firstPage) {
|
|
var currentScale = this._currentScale;
|
|
var currentScaleValue = this._currentScaleValue;
|
|
var normalizedScaleValue =
|
|
parseFloat(currentScaleValue) === currentScale ?
|
|
Math.round(currentScale * 10000) / 100 : currentScaleValue;
|
|
|
|
var pageNumber = firstPage.id;
|
|
var pdfOpenParams = '#page=' + pageNumber;
|
|
pdfOpenParams += '&zoom=' + normalizedScaleValue;
|
|
var currentPageView = this._pages[pageNumber - 1];
|
|
var container = this.container;
|
|
var topLeft = currentPageView.getPagePoint(
|
|
(container.scrollLeft - firstPage.x),
|
|
(container.scrollTop - firstPage.y));
|
|
var intLeft = Math.round(topLeft[0]);
|
|
var intTop = Math.round(topLeft[1]);
|
|
pdfOpenParams += ',' + intLeft + ',' + intTop;
|
|
|
|
this._location = {
|
|
pageNumber: pageNumber,
|
|
scale: normalizedScaleValue,
|
|
top: intTop,
|
|
left: intLeft,
|
|
pdfOpenParams: pdfOpenParams
|
|
};
|
|
},
|
|
|
|
update: function PDFViewer_update() {
|
|
var visible = this._getVisiblePages();
|
|
var visiblePages = visible.views;
|
|
if (visiblePages.length === 0) {
|
|
return;
|
|
}
|
|
|
|
this.updateInProgress = true;
|
|
|
|
var suggestedCacheSize = Math.max(DEFAULT_CACHE_SIZE,
|
|
2 * visiblePages.length + 1);
|
|
this._buffer.resize(suggestedCacheSize);
|
|
|
|
this.renderingQueue.renderHighestPriority(visible);
|
|
|
|
var currentId = this._currentPageNumber;
|
|
var firstPage = visible.first;
|
|
|
|
for (var i = 0, ii = visiblePages.length, stillFullyVisible = false;
|
|
i < ii; ++i) {
|
|
var page = visiblePages[i];
|
|
|
|
if (page.percent < 100) {
|
|
break;
|
|
}
|
|
if (page.id === currentId) {
|
|
stillFullyVisible = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!stillFullyVisible) {
|
|
currentId = visiblePages[0].id;
|
|
}
|
|
|
|
if (!this.isInPresentationMode) {
|
|
this.currentPageNumber = currentId;
|
|
}
|
|
|
|
this._updateLocation(firstPage);
|
|
|
|
this.updateInProgress = false;
|
|
|
|
var event = document.createEvent('UIEvents');
|
|
event.initUIEvent('updateviewarea', true, true, window, 0);
|
|
event.location = this._location;
|
|
this.container.dispatchEvent(event);
|
|
},
|
|
|
|
containsElement: function (element) {
|
|
return this.container.contains(element);
|
|
},
|
|
|
|
focus: function () {
|
|
this.container.focus();
|
|
},
|
|
|
|
get isInPresentationMode() {
|
|
return this.presentationModeState === PresentationModeState.FULLSCREEN;
|
|
},
|
|
|
|
get isChangingPresentationMode() {
|
|
return this.presentationModeState === PresentationModeState.CHANGING;
|
|
},
|
|
|
|
get isHorizontalScrollbarEnabled() {
|
|
return (this.isInPresentationMode ?
|
|
false : (this.container.scrollWidth > this.container.clientWidth));
|
|
},
|
|
|
|
_getVisiblePages: function () {
|
|
if (!this.isInPresentationMode) {
|
|
return getVisibleElements(this.container, this._pages, true);
|
|
} else {
|
|
// The algorithm in getVisibleElements doesn't work in all browsers and
|
|
// configurations when presentation mode is active.
|
|
var visible = [];
|
|
var currentPage = this._pages[this._currentPageNumber - 1];
|
|
visible.push({ id: currentPage.id, view: currentPage });
|
|
return { first: currentPage, last: currentPage, views: visible };
|
|
}
|
|
},
|
|
|
|
cleanup: function () {
|
|
for (var i = 0, ii = this._pages.length; i < ii; i++) {
|
|
if (this._pages[i] &&
|
|
this._pages[i].renderingState !== RenderingStates.FINISHED) {
|
|
this._pages[i].reset();
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @param {PDFPageView} pageView
|
|
* @returns {PDFPage}
|
|
* @private
|
|
*/
|
|
_ensurePdfPageLoaded: function (pageView) {
|
|
if (pageView.pdfPage) {
|
|
return Promise.resolve(pageView.pdfPage);
|
|
}
|
|
var pageNumber = pageView.id;
|
|
if (this._pagesRequests[pageNumber]) {
|
|
return this._pagesRequests[pageNumber];
|
|
}
|
|
var promise = this.pdfDocument.getPage(pageNumber).then(
|
|
function (pdfPage) {
|
|
pageView.setPdfPage(pdfPage);
|
|
this._pagesRequests[pageNumber] = null;
|
|
return pdfPage;
|
|
}.bind(this));
|
|
this._pagesRequests[pageNumber] = promise;
|
|
return promise;
|
|
},
|
|
|
|
forceRendering: function (currentlyVisiblePages) {
|
|
var visiblePages = currentlyVisiblePages || this._getVisiblePages();
|
|
var pageView = this.renderingQueue.getHighestPriority(visiblePages,
|
|
this._pages,
|
|
this.scroll.down);
|
|
if (pageView) {
|
|
this._ensurePdfPageLoaded(pageView).then(function () {
|
|
this.renderingQueue.renderView(pageView);
|
|
}.bind(this));
|
|
return true;
|
|
}
|
|
return false;
|
|
},
|
|
|
|
getPageTextContent: function (pageIndex) {
|
|
return this.pdfDocument.getPage(pageIndex + 1).then(function (page) {
|
|
return page.getTextContent({ normalizeWhitespace: true });
|
|
});
|
|
},
|
|
|
|
/**
|
|
* @param {HTMLDivElement} textLayerDiv
|
|
* @param {number} pageIndex
|
|
* @param {PageViewport} viewport
|
|
* @returns {TextLayerBuilder}
|
|
*/
|
|
createTextLayerBuilder: function (textLayerDiv, pageIndex, viewport) {
|
|
return new TextLayerBuilder({
|
|
textLayerDiv: textLayerDiv,
|
|
pageIndex: pageIndex,
|
|
viewport: viewport,
|
|
findController: this.isInPresentationMode ? null : this.findController
|
|
});
|
|
},
|
|
|
|
/**
|
|
* @param {HTMLDivElement} pageDiv
|
|
* @param {PDFPage} pdfPage
|
|
* @returns {AnnotationLayerBuilder}
|
|
*/
|
|
createAnnotationLayerBuilder: function (pageDiv, pdfPage) {
|
|
return new AnnotationLayerBuilder({
|
|
pageDiv: pageDiv,
|
|
pdfPage: pdfPage,
|
|
linkService: this.linkService
|
|
});
|
|
},
|
|
|
|
setFindController: function (findController) {
|
|
this.findController = findController;
|
|
},
|
|
};
|
|
|
|
return PDFViewer;
|
|
})();
|
|
|
|
var SimpleLinkService = (function SimpleLinkServiceClosure() {
|
|
function SimpleLinkService() {}
|
|
|
|
SimpleLinkService.prototype = {
|
|
/**
|
|
* @returns {number}
|
|
*/
|
|
get page() {
|
|
return 0;
|
|
},
|
|
/**
|
|
* @param {number} value
|
|
*/
|
|
set page(value) {},
|
|
/**
|
|
* @param dest - The PDF destination object.
|
|
*/
|
|
navigateTo: function (dest) {},
|
|
/**
|
|
* @param dest - The PDF destination object.
|
|
* @returns {string} The hyperlink to the PDF object.
|
|
*/
|
|
getDestinationHash: function (dest) {
|
|
return '#';
|
|
},
|
|
/**
|
|
* @param hash - The PDF parameters/hash.
|
|
* @returns {string} The hyperlink to the PDF object.
|
|
*/
|
|
getAnchorUrl: function (hash) {
|
|
return '#';
|
|
},
|
|
/**
|
|
* @param {string} hash
|
|
*/
|
|
setHash: function (hash) {},
|
|
/**
|
|
* @param {string} action
|
|
*/
|
|
executeNamedAction: function (action) {},
|
|
/**
|
|
* @param {number} pageNum - page number.
|
|
* @param {Object} pageRef - reference to the page.
|
|
*/
|
|
cachePageRef: function (pageNum, pageRef) {}
|
|
};
|
|
return SimpleLinkService;
|
|
})();
|
|
|
|
|
|
var THUMBNAIL_SCROLL_MARGIN = -19;
|
|
|
|
|
|
var THUMBNAIL_WIDTH = 98; // px
|
|
var THUMBNAIL_CANVAS_BORDER_WIDTH = 1; // px
|
|
|
|
/**
|
|
* @typedef {Object} PDFThumbnailViewOptions
|
|
* @property {HTMLDivElement} container - The viewer element.
|
|
* @property {number} id - The thumbnail's unique ID (normally its number).
|
|
* @property {PageViewport} defaultViewport - The page viewport.
|
|
* @property {IPDFLinkService} linkService - The navigation/linking service.
|
|
* @property {PDFRenderingQueue} renderingQueue - The rendering queue object.
|
|
*/
|
|
|
|
/**
|
|
* @class
|
|
* @implements {IRenderableView}
|
|
*/
|
|
var PDFThumbnailView = (function PDFThumbnailViewClosure() {
|
|
function getTempCanvas(width, height) {
|
|
var tempCanvas = PDFThumbnailView.tempImageCache;
|
|
if (!tempCanvas) {
|
|
tempCanvas = document.createElement('canvas');
|
|
PDFThumbnailView.tempImageCache = tempCanvas;
|
|
}
|
|
tempCanvas.width = width;
|
|
tempCanvas.height = height;
|
|
|
|
// Since this is a temporary canvas, we need to fill the canvas with a white
|
|
// background ourselves. |_getPageDrawContext| uses CSS rules for this.
|
|
tempCanvas.mozOpaque = true;
|
|
var ctx = tempCanvas.getContext('2d', {alpha: false});
|
|
ctx.save();
|
|
ctx.fillStyle = 'rgb(255, 255, 255)';
|
|
ctx.fillRect(0, 0, width, height);
|
|
ctx.restore();
|
|
return tempCanvas;
|
|
}
|
|
|
|
/**
|
|
* @constructs PDFThumbnailView
|
|
* @param {PDFThumbnailViewOptions} options
|
|
*/
|
|
function PDFThumbnailView(options) {
|
|
var container = options.container;
|
|
var id = options.id;
|
|
var defaultViewport = options.defaultViewport;
|
|
var linkService = options.linkService;
|
|
var renderingQueue = options.renderingQueue;
|
|
|
|
this.id = id;
|
|
this.renderingId = 'thumbnail' + id;
|
|
|
|
this.pdfPage = null;
|
|
this.rotation = 0;
|
|
this.viewport = defaultViewport;
|
|
this.pdfPageRotate = defaultViewport.rotation;
|
|
|
|
this.linkService = linkService;
|
|
this.renderingQueue = renderingQueue;
|
|
|
|
this.hasImage = false;
|
|
this.resume = null;
|
|
this.renderingState = RenderingStates.INITIAL;
|
|
|
|
this.pageWidth = this.viewport.width;
|
|
this.pageHeight = this.viewport.height;
|
|
this.pageRatio = this.pageWidth / this.pageHeight;
|
|
|
|
this.canvasWidth = THUMBNAIL_WIDTH;
|
|
this.canvasHeight = (this.canvasWidth / this.pageRatio) | 0;
|
|
this.scale = this.canvasWidth / this.pageWidth;
|
|
|
|
var anchor = document.createElement('a');
|
|
anchor.href = linkService.getAnchorUrl('#page=' + id);
|
|
anchor.title = 'Page ' + id;
|
|
anchor.onclick = function stopNavigation() {
|
|
linkService.page = id;
|
|
return false;
|
|
};
|
|
|
|
var div = document.createElement('div');
|
|
div.id = 'thumbnailContainer' + id;
|
|
div.className = 'thumbnail';
|
|
this.div = div;
|
|
|
|
if (id === 1) {
|
|
// Highlight the thumbnail of the first page when no page number is
|
|
// specified (or exists in cache) when the document is loaded.
|
|
div.classList.add('selected');
|
|
}
|
|
|
|
var ring = document.createElement('div');
|
|
ring.className = 'thumbnailSelectionRing';
|
|
var borderAdjustment = 2 * THUMBNAIL_CANVAS_BORDER_WIDTH;
|
|
ring.style.width = this.canvasWidth + borderAdjustment + 'px';
|
|
ring.style.height = this.canvasHeight + borderAdjustment + 'px';
|
|
this.ring = ring;
|
|
|
|
div.appendChild(ring);
|
|
anchor.appendChild(div);
|
|
container.appendChild(anchor);
|
|
}
|
|
|
|
PDFThumbnailView.prototype = {
|
|
setPdfPage: function PDFThumbnailView_setPdfPage(pdfPage) {
|
|
this.pdfPage = pdfPage;
|
|
this.pdfPageRotate = pdfPage.rotate;
|
|
var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
|
|
this.viewport = pdfPage.getViewport(1, totalRotation);
|
|
this.reset();
|
|
},
|
|
|
|
reset: function PDFThumbnailView_reset() {
|
|
if (this.renderTask) {
|
|
this.renderTask.cancel();
|
|
}
|
|
this.hasImage = false;
|
|
this.resume = null;
|
|
this.renderingState = RenderingStates.INITIAL;
|
|
|
|
this.pageWidth = this.viewport.width;
|
|
this.pageHeight = this.viewport.height;
|
|
this.pageRatio = this.pageWidth / this.pageHeight;
|
|
|
|
this.canvasHeight = (this.canvasWidth / this.pageRatio) | 0;
|
|
this.scale = (this.canvasWidth / this.pageWidth);
|
|
|
|
this.div.removeAttribute('data-loaded');
|
|
var ring = this.ring;
|
|
var childNodes = ring.childNodes;
|
|
for (var i = childNodes.length - 1; i >= 0; i--) {
|
|
ring.removeChild(childNodes[i]);
|
|
}
|
|
var borderAdjustment = 2 * THUMBNAIL_CANVAS_BORDER_WIDTH;
|
|
ring.style.width = this.canvasWidth + borderAdjustment + 'px';
|
|
ring.style.height = this.canvasHeight + borderAdjustment + 'px';
|
|
|
|
if (this.canvas) {
|
|
// Zeroing the width and height causes Firefox to release graphics
|
|
// resources immediately, which can greatly reduce memory consumption.
|
|
this.canvas.width = 0;
|
|
this.canvas.height = 0;
|
|
delete this.canvas;
|
|
}
|
|
if (this.image) {
|
|
this.image.removeAttribute('src');
|
|
delete this.image;
|
|
}
|
|
},
|
|
|
|
update: function PDFThumbnailView_update(rotation) {
|
|
if (typeof rotation !== 'undefined') {
|
|
this.rotation = rotation;
|
|
}
|
|
var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
|
|
this.viewport = this.viewport.clone({
|
|
scale: 1,
|
|
rotation: totalRotation
|
|
});
|
|
this.reset();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getPageDrawContext:
|
|
function PDFThumbnailView_getPageDrawContext(noCtxScale) {
|
|
var canvas = document.createElement('canvas');
|
|
this.canvas = canvas;
|
|
|
|
canvas.mozOpaque = true;
|
|
var ctx = canvas.getContext('2d', {alpha: false});
|
|
var outputScale = getOutputScale(ctx);
|
|
|
|
canvas.width = (this.canvasWidth * outputScale.sx) | 0;
|
|
canvas.height = (this.canvasHeight * outputScale.sy) | 0;
|
|
canvas.style.width = this.canvasWidth + 'px';
|
|
canvas.style.height = this.canvasHeight + 'px';
|
|
|
|
if (!noCtxScale && outputScale.scaled) {
|
|
ctx.scale(outputScale.sx, outputScale.sy);
|
|
}
|
|
|
|
var image = document.createElement('img');
|
|
this.image = image;
|
|
|
|
image.id = this.renderingId;
|
|
image.className = 'thumbnailImage';
|
|
image.setAttribute('aria-label', 'Thumbnail of Page ' + this.id);
|
|
|
|
image.style.width = canvas.style.width;
|
|
image.style.height = canvas.style.height;
|
|
|
|
return ctx;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_convertCanvasToImage: function PDFThumbnailView_convertCanvasToImage() {
|
|
if (!this.canvas) {
|
|
return;
|
|
}
|
|
this.image.src = this.canvas.toDataURL();
|
|
|
|
this.div.setAttribute('data-loaded', true);
|
|
this.ring.appendChild(this.image);
|
|
|
|
// Zeroing the width and height causes Firefox to release graphics
|
|
// resources immediately, which can greatly reduce memory consumption.
|
|
this.canvas.width = 0;
|
|
this.canvas.height = 0;
|
|
delete this.canvas;
|
|
},
|
|
|
|
draw: function PDFThumbnailView_draw() {
|
|
if (this.renderingState !== RenderingStates.INITIAL) {
|
|
console.error('Must be in new state before drawing');
|
|
}
|
|
if (this.hasImage) {
|
|
return Promise.resolve(undefined);
|
|
}
|
|
this.hasImage = true;
|
|
this.renderingState = RenderingStates.RUNNING;
|
|
|
|
var resolveRenderPromise, rejectRenderPromise;
|
|
var promise = new Promise(function (resolve, reject) {
|
|
resolveRenderPromise = resolve;
|
|
rejectRenderPromise = reject;
|
|
});
|
|
|
|
var self = this;
|
|
function thumbnailDrawCallback(error) {
|
|
// The renderTask may have been replaced by a new one, so only remove
|
|
// the reference to the renderTask if it matches the one that is
|
|
// triggering this callback.
|
|
if (renderTask === self.renderTask) {
|
|
self.renderTask = null;
|
|
}
|
|
if (error === 'cancelled') {
|
|
rejectRenderPromise(error);
|
|
return;
|
|
}
|
|
self.renderingState = RenderingStates.FINISHED;
|
|
self._convertCanvasToImage();
|
|
|
|
if (!error) {
|
|
resolveRenderPromise(undefined);
|
|
} else {
|
|
rejectRenderPromise(error);
|
|
}
|
|
}
|
|
|
|
var ctx = this._getPageDrawContext();
|
|
var drawViewport = this.viewport.clone({ scale: this.scale });
|
|
var renderContinueCallback = function renderContinueCallback(cont) {
|
|
if (!self.renderingQueue.isHighestPriority(self)) {
|
|
self.renderingState = RenderingStates.PAUSED;
|
|
self.resume = function resumeCallback() {
|
|
self.renderingState = RenderingStates.RUNNING;
|
|
cont();
|
|
};
|
|
return;
|
|
}
|
|
cont();
|
|
};
|
|
|
|
var renderContext = {
|
|
canvasContext: ctx,
|
|
viewport: drawViewport
|
|
};
|
|
var renderTask = this.renderTask = this.pdfPage.render(renderContext);
|
|
renderTask.onContinue = renderContinueCallback;
|
|
|
|
renderTask.promise.then(
|
|
function pdfPageRenderCallback() {
|
|
thumbnailDrawCallback(null);
|
|
},
|
|
function pdfPageRenderError(error) {
|
|
thumbnailDrawCallback(error);
|
|
}
|
|
);
|
|
return promise;
|
|
},
|
|
|
|
setImage: function PDFThumbnailView_setImage(pageView) {
|
|
var img = pageView.canvas;
|
|
if (this.hasImage || !img) {
|
|
return;
|
|
}
|
|
if (!this.pdfPage) {
|
|
this.setPdfPage(pageView.pdfPage);
|
|
}
|
|
this.hasImage = true;
|
|
this.renderingState = RenderingStates.FINISHED;
|
|
|
|
var ctx = this._getPageDrawContext(true);
|
|
var canvas = ctx.canvas;
|
|
|
|
if (img.width <= 2 * canvas.width) {
|
|
ctx.drawImage(img, 0, 0, img.width, img.height,
|
|
0, 0, canvas.width, canvas.height);
|
|
this._convertCanvasToImage();
|
|
return;
|
|
}
|
|
// drawImage does an awful job of rescaling the image, doing it gradually.
|
|
var MAX_NUM_SCALING_STEPS = 3;
|
|
var reducedWidth = canvas.width << MAX_NUM_SCALING_STEPS;
|
|
var reducedHeight = canvas.height << MAX_NUM_SCALING_STEPS;
|
|
var reducedImage = getTempCanvas(reducedWidth, reducedHeight);
|
|
var reducedImageCtx = reducedImage.getContext('2d');
|
|
|
|
while (reducedWidth > img.width || reducedHeight > img.height) {
|
|
reducedWidth >>= 1;
|
|
reducedHeight >>= 1;
|
|
}
|
|
reducedImageCtx.drawImage(img, 0, 0, img.width, img.height,
|
|
0, 0, reducedWidth, reducedHeight);
|
|
while (reducedWidth > 2 * canvas.width) {
|
|
reducedImageCtx.drawImage(reducedImage,
|
|
0, 0, reducedWidth, reducedHeight,
|
|
0, 0, reducedWidth >> 1, reducedHeight >> 1);
|
|
reducedWidth >>= 1;
|
|
reducedHeight >>= 1;
|
|
}
|
|
ctx.drawImage(reducedImage, 0, 0, reducedWidth, reducedHeight,
|
|
0, 0, canvas.width, canvas.height);
|
|
this._convertCanvasToImage();
|
|
}
|
|
};
|
|
|
|
return PDFThumbnailView;
|
|
})();
|
|
|
|
PDFThumbnailView.tempImageCache = null;
|
|
|
|
|
|
/**
|
|
* @typedef {Object} PDFThumbnailViewerOptions
|
|
* @property {HTMLDivElement} container - The container for the thumbnail
|
|
* elements.
|
|
* @property {IPDFLinkService} linkService - The navigation/linking service.
|
|
* @property {PDFRenderingQueue} renderingQueue - The rendering queue object.
|
|
*/
|
|
|
|
/**
|
|
* Simple viewer control to display thumbnails for pages.
|
|
* @class
|
|
* @implements {IRenderableView}
|
|
*/
|
|
var PDFThumbnailViewer = (function PDFThumbnailViewerClosure() {
|
|
/**
|
|
* @constructs PDFThumbnailViewer
|
|
* @param {PDFThumbnailViewerOptions} options
|
|
*/
|
|
function PDFThumbnailViewer(options) {
|
|
this.container = options.container;
|
|
this.renderingQueue = options.renderingQueue;
|
|
this.linkService = options.linkService;
|
|
|
|
this.scroll = watchScroll(this.container, this._scrollUpdated.bind(this));
|
|
this._resetView();
|
|
}
|
|
|
|
PDFThumbnailViewer.prototype = {
|
|
/**
|
|
* @private
|
|
*/
|
|
_scrollUpdated: function PDFThumbnailViewer_scrollUpdated() {
|
|
this.renderingQueue.renderHighestPriority();
|
|
},
|
|
|
|
getThumbnail: function PDFThumbnailViewer_getThumbnail(index) {
|
|
return this.thumbnails[index];
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getVisibleThumbs: function PDFThumbnailViewer_getVisibleThumbs() {
|
|
return getVisibleElements(this.container, this.thumbnails);
|
|
},
|
|
|
|
scrollThumbnailIntoView:
|
|
function PDFThumbnailViewer_scrollThumbnailIntoView(page) {
|
|
var selected = document.querySelector('.thumbnail.selected');
|
|
if (selected) {
|
|
selected.classList.remove('selected');
|
|
}
|
|
var thumbnail = document.getElementById('thumbnailContainer' + page);
|
|
if (thumbnail) {
|
|
thumbnail.classList.add('selected');
|
|
}
|
|
var visibleThumbs = this._getVisibleThumbs();
|
|
var numVisibleThumbs = visibleThumbs.views.length;
|
|
|
|
// If the thumbnail isn't currently visible, scroll it into view.
|
|
if (numVisibleThumbs > 0) {
|
|
var first = visibleThumbs.first.id;
|
|
// Account for only one thumbnail being visible.
|
|
var last = (numVisibleThumbs > 1 ? visibleThumbs.last.id : first);
|
|
if (page <= first || page >= last) {
|
|
scrollIntoView(thumbnail, { top: THUMBNAIL_SCROLL_MARGIN });
|
|
}
|
|
}
|
|
},
|
|
|
|
get pagesRotation() {
|
|
return this._pagesRotation;
|
|
},
|
|
|
|
set pagesRotation(rotation) {
|
|
this._pagesRotation = rotation;
|
|
for (var i = 0, l = this.thumbnails.length; i < l; i++) {
|
|
var thumb = this.thumbnails[i];
|
|
thumb.update(rotation);
|
|
}
|
|
},
|
|
|
|
cleanup: function PDFThumbnailViewer_cleanup() {
|
|
var tempCanvas = PDFThumbnailView.tempImageCache;
|
|
if (tempCanvas) {
|
|
// Zeroing the width and height causes Firefox to release graphics
|
|
// resources immediately, which can greatly reduce memory consumption.
|
|
tempCanvas.width = 0;
|
|
tempCanvas.height = 0;
|
|
}
|
|
PDFThumbnailView.tempImageCache = null;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_resetView: function PDFThumbnailViewer_resetView() {
|
|
this.thumbnails = [];
|
|
this._pagesRotation = 0;
|
|
this._pagesRequests = [];
|
|
},
|
|
|
|
setDocument: function PDFThumbnailViewer_setDocument(pdfDocument) {
|
|
if (this.pdfDocument) {
|
|
// cleanup of the elements and views
|
|
var thumbsView = this.container;
|
|
while (thumbsView.hasChildNodes()) {
|
|
thumbsView.removeChild(thumbsView.lastChild);
|
|
}
|
|
this._resetView();
|
|
}
|
|
|
|
this.pdfDocument = pdfDocument;
|
|
if (!pdfDocument) {
|
|
return Promise.resolve();
|
|
}
|
|
|
|
return pdfDocument.getPage(1).then(function (firstPage) {
|
|
var pagesCount = pdfDocument.numPages;
|
|
var viewport = firstPage.getViewport(1.0);
|
|
for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
|
|
var thumbnail = new PDFThumbnailView({
|
|
container: this.container,
|
|
id: pageNum,
|
|
defaultViewport: viewport.clone(),
|
|
linkService: this.linkService,
|
|
renderingQueue: this.renderingQueue
|
|
});
|
|
this.thumbnails.push(thumbnail);
|
|
}
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* @param {PDFPageView} pageView
|
|
* @returns {PDFPage}
|
|
* @private
|
|
*/
|
|
_ensurePdfPageLoaded:
|
|
function PDFThumbnailViewer_ensurePdfPageLoaded(thumbView) {
|
|
if (thumbView.pdfPage) {
|
|
return Promise.resolve(thumbView.pdfPage);
|
|
}
|
|
var pageNumber = thumbView.id;
|
|
if (this._pagesRequests[pageNumber]) {
|
|
return this._pagesRequests[pageNumber];
|
|
}
|
|
var promise = this.pdfDocument.getPage(pageNumber).then(
|
|
function (pdfPage) {
|
|
thumbView.setPdfPage(pdfPage);
|
|
this._pagesRequests[pageNumber] = null;
|
|
return pdfPage;
|
|
}.bind(this));
|
|
this._pagesRequests[pageNumber] = promise;
|
|
return promise;
|
|
},
|
|
|
|
ensureThumbnailVisible:
|
|
function PDFThumbnailViewer_ensureThumbnailVisible(page) {
|
|
// Ensure that the thumbnail of the current page is visible
|
|
// when switching from another view.
|
|
scrollIntoView(document.getElementById('thumbnailContainer' + page));
|
|
},
|
|
|
|
forceRendering: function () {
|
|
var visibleThumbs = this._getVisibleThumbs();
|
|
var thumbView = this.renderingQueue.getHighestPriority(visibleThumbs,
|
|
this.thumbnails,
|
|
this.scroll.down);
|
|
if (thumbView) {
|
|
this._ensurePdfPageLoaded(thumbView).then(function () {
|
|
this.renderingQueue.renderView(thumbView);
|
|
}.bind(this));
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
};
|
|
|
|
return PDFThumbnailViewer;
|
|
})();
|
|
|
|
|
|
/**
|
|
* @typedef {Object} PDFOutlineViewOptions
|
|
* @property {HTMLDivElement} container - The viewer element.
|
|
* @property {Array} outline - An array of outline objects.
|
|
* @property {IPDFLinkService} linkService - The navigation/linking service.
|
|
*/
|
|
|
|
/**
|
|
* @class
|
|
*/
|
|
var PDFOutlineView = (function PDFOutlineViewClosure() {
|
|
/**
|
|
* @constructs PDFOutlineView
|
|
* @param {PDFOutlineViewOptions} options
|
|
*/
|
|
function PDFOutlineView(options) {
|
|
this.container = options.container;
|
|
this.outline = options.outline;
|
|
this.linkService = options.linkService;
|
|
this.lastToggleIsShow = true;
|
|
}
|
|
|
|
PDFOutlineView.prototype = {
|
|
reset: function PDFOutlineView_reset() {
|
|
var container = this.container;
|
|
while (container.firstChild) {
|
|
container.removeChild(container.firstChild);
|
|
}
|
|
this.lastToggleIsShow = true;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_dispatchEvent: function PDFOutlineView_dispatchEvent(outlineCount) {
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('outlineloaded', true, true, {
|
|
outlineCount: outlineCount
|
|
});
|
|
this.container.dispatchEvent(event);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_bindLink: function PDFOutlineView_bindLink(element, item) {
|
|
if (item.url) {
|
|
PDFJS.addLinkAttributes(element, { url: item.url });
|
|
return;
|
|
}
|
|
var linkService = this.linkService;
|
|
element.href = linkService.getDestinationHash(item.dest);
|
|
element.onclick = function goToDestination(e) {
|
|
linkService.navigateTo(item.dest);
|
|
return false;
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Prepend a button before an outline item which allows the user to toggle
|
|
* the visibility of all outline items at that level.
|
|
*
|
|
* @private
|
|
*/
|
|
_addToggleButton: function PDFOutlineView_addToggleButton(div) {
|
|
var toggler = document.createElement('div');
|
|
toggler.className = 'outlineItemToggler';
|
|
toggler.onclick = function(event) {
|
|
event.stopPropagation();
|
|
toggler.classList.toggle('outlineItemsHidden');
|
|
|
|
if (event.shiftKey) {
|
|
var shouldShowAll = !toggler.classList.contains('outlineItemsHidden');
|
|
this._toggleOutlineItem(div, shouldShowAll);
|
|
}
|
|
}.bind(this);
|
|
div.insertBefore(toggler, div.firstChild);
|
|
},
|
|
|
|
/**
|
|
* Toggle the visibility of the subtree of an outline item.
|
|
*
|
|
* @param {Element} root - the root of the outline (sub)tree.
|
|
* @param {boolean} state - whether to show the outline (sub)tree. If false,
|
|
* the outline subtree rooted at |root| will be collapsed.
|
|
*
|
|
* @private
|
|
*/
|
|
_toggleOutlineItem: function PDFOutlineView_toggleOutlineItem(root, show) {
|
|
this.lastToggleIsShow = show;
|
|
var togglers = root.querySelectorAll('.outlineItemToggler');
|
|
for (var i = 0, ii = togglers.length; i < ii; ++i) {
|
|
togglers[i].classList[show ? 'remove' : 'add']('outlineItemsHidden');
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Collapse or expand all subtrees of the outline.
|
|
*/
|
|
toggleOutlineTree: function PDFOutlineView_toggleOutlineTree() {
|
|
this._toggleOutlineItem(this.container, !this.lastToggleIsShow);
|
|
},
|
|
|
|
render: function PDFOutlineView_render() {
|
|
var outline = this.outline;
|
|
var outlineCount = 0;
|
|
|
|
this.reset();
|
|
|
|
if (!outline) {
|
|
this._dispatchEvent(outlineCount);
|
|
return;
|
|
}
|
|
|
|
var fragment = document.createDocumentFragment();
|
|
var queue = [{ parent: fragment, items: this.outline }];
|
|
var hasAnyNesting = false;
|
|
while (queue.length > 0) {
|
|
var levelData = queue.shift();
|
|
for (var i = 0, len = levelData.items.length; i < len; i++) {
|
|
var item = levelData.items[i];
|
|
var div = document.createElement('div');
|
|
div.className = 'outlineItem';
|
|
var element = document.createElement('a');
|
|
this._bindLink(element, item);
|
|
element.textContent = PDFJS.removeNullCharacters(item.title);
|
|
div.appendChild(element);
|
|
|
|
if (item.items.length > 0) {
|
|
hasAnyNesting = true;
|
|
this._addToggleButton(div);
|
|
|
|
var itemsDiv = document.createElement('div');
|
|
itemsDiv.className = 'outlineItems';
|
|
div.appendChild(itemsDiv);
|
|
queue.push({ parent: itemsDiv, items: item.items });
|
|
}
|
|
|
|
levelData.parent.appendChild(div);
|
|
outlineCount++;
|
|
}
|
|
}
|
|
if (hasAnyNesting) {
|
|
this.container.classList.add('outlineWithDeepNesting');
|
|
}
|
|
|
|
this.container.appendChild(fragment);
|
|
|
|
this._dispatchEvent(outlineCount);
|
|
}
|
|
};
|
|
|
|
return PDFOutlineView;
|
|
})();
|
|
|
|
|
|
/**
|
|
* @typedef {Object} PDFAttachmentViewOptions
|
|
* @property {HTMLDivElement} container - The viewer element.
|
|
* @property {Array} attachments - An array of attachment objects.
|
|
* @property {DownloadManager} downloadManager - The download manager.
|
|
*/
|
|
|
|
/**
|
|
* @class
|
|
*/
|
|
var PDFAttachmentView = (function PDFAttachmentViewClosure() {
|
|
/**
|
|
* @constructs PDFAttachmentView
|
|
* @param {PDFAttachmentViewOptions} options
|
|
*/
|
|
function PDFAttachmentView(options) {
|
|
this.container = options.container;
|
|
this.attachments = options.attachments;
|
|
this.downloadManager = options.downloadManager;
|
|
}
|
|
|
|
PDFAttachmentView.prototype = {
|
|
reset: function PDFAttachmentView_reset() {
|
|
var container = this.container;
|
|
while (container.firstChild) {
|
|
container.removeChild(container.firstChild);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_dispatchEvent: function PDFAttachmentView_dispatchEvent(attachmentsCount) {
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('attachmentsloaded', true, true, {
|
|
attachmentsCount: attachmentsCount
|
|
});
|
|
this.container.dispatchEvent(event);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_bindLink: function PDFAttachmentView_bindLink(button, content, filename) {
|
|
button.onclick = function downloadFile(e) {
|
|
this.downloadManager.downloadData(content, filename, '');
|
|
return false;
|
|
}.bind(this);
|
|
},
|
|
|
|
render: function PDFAttachmentView_render() {
|
|
var attachments = this.attachments;
|
|
var attachmentsCount = 0;
|
|
|
|
this.reset();
|
|
|
|
if (!attachments) {
|
|
this._dispatchEvent(attachmentsCount);
|
|
return;
|
|
}
|
|
|
|
var names = Object.keys(attachments).sort(function(a, b) {
|
|
return a.toLowerCase().localeCompare(b.toLowerCase());
|
|
});
|
|
attachmentsCount = names.length;
|
|
|
|
for (var i = 0; i < attachmentsCount; i++) {
|
|
var item = attachments[names[i]];
|
|
var filename = getFileName(item.filename);
|
|
var div = document.createElement('div');
|
|
div.className = 'attachmentsItem';
|
|
var button = document.createElement('button');
|
|
this._bindLink(button, item.content, filename);
|
|
button.textContent = PDFJS.removeNullCharacters(filename);
|
|
div.appendChild(button);
|
|
this.container.appendChild(div);
|
|
}
|
|
|
|
this._dispatchEvent(attachmentsCount);
|
|
}
|
|
};
|
|
|
|
return PDFAttachmentView;
|
|
})();
|
|
|
|
|
|
var PDFViewerApplication = {
|
|
initialBookmark: document.location.hash.substring(1),
|
|
initialDestination: null,
|
|
initialized: false,
|
|
fellback: false,
|
|
pdfDocument: null,
|
|
pdfLoadingTask: null,
|
|
sidebarOpen: false,
|
|
printing: false,
|
|
/** @type {PDFViewer} */
|
|
pdfViewer: null,
|
|
/** @type {PDFThumbnailViewer} */
|
|
pdfThumbnailViewer: null,
|
|
/** @type {PDFRenderingQueue} */
|
|
pdfRenderingQueue: null,
|
|
/** @type {PDFPresentationMode} */
|
|
pdfPresentationMode: null,
|
|
/** @type {PDFDocumentProperties} */
|
|
pdfDocumentProperties: null,
|
|
/** @type {PDFLinkService} */
|
|
pdfLinkService: null,
|
|
/** @type {PDFHistory} */
|
|
pdfHistory: null,
|
|
pageRotation: 0,
|
|
isInitialViewSet: false,
|
|
animationStartedPromise: null,
|
|
preferenceSidebarViewOnLoad: SidebarView.NONE,
|
|
preferencePdfBugEnabled: false,
|
|
preferenceShowPreviousViewOnLoad: true,
|
|
preferenceDefaultZoomValue: '',
|
|
isViewerEmbedded: (window.parent !== window),
|
|
url: '',
|
|
|
|
// called once when the document is loaded
|
|
initialize: function pdfViewInitialize() {
|
|
var pdfRenderingQueue = new PDFRenderingQueue();
|
|
pdfRenderingQueue.onIdle = this.cleanup.bind(this);
|
|
this.pdfRenderingQueue = pdfRenderingQueue;
|
|
|
|
var pdfLinkService = new PDFLinkService();
|
|
this.pdfLinkService = pdfLinkService;
|
|
|
|
var container = document.getElementById('viewerContainer');
|
|
var viewer = document.getElementById('viewer');
|
|
this.pdfViewer = new PDFViewer({
|
|
container: container,
|
|
viewer: viewer,
|
|
renderingQueue: pdfRenderingQueue,
|
|
linkService: pdfLinkService
|
|
});
|
|
pdfRenderingQueue.setViewer(this.pdfViewer);
|
|
pdfLinkService.setViewer(this.pdfViewer);
|
|
|
|
var thumbnailContainer = document.getElementById('thumbnailView');
|
|
this.pdfThumbnailViewer = new PDFThumbnailViewer({
|
|
container: thumbnailContainer,
|
|
renderingQueue: pdfRenderingQueue,
|
|
linkService: pdfLinkService
|
|
});
|
|
pdfRenderingQueue.setThumbnailViewer(this.pdfThumbnailViewer);
|
|
|
|
Preferences.initialize();
|
|
|
|
this.pdfHistory = new PDFHistory({
|
|
linkService: pdfLinkService
|
|
});
|
|
pdfLinkService.setHistory(this.pdfHistory);
|
|
|
|
this.findController = new PDFFindController({
|
|
pdfViewer: this.pdfViewer,
|
|
integratedFind: this.supportsIntegratedFind
|
|
});
|
|
this.pdfViewer.setFindController(this.findController);
|
|
|
|
this.findBar = new PDFFindBar({
|
|
bar: document.getElementById('findbar'),
|
|
toggleButton: document.getElementById('viewFind'),
|
|
findField: document.getElementById('findInput'),
|
|
highlightAllCheckbox: document.getElementById('findHighlightAll'),
|
|
caseSensitiveCheckbox: document.getElementById('findMatchCase'),
|
|
findMsg: document.getElementById('findMsg'),
|
|
findResultsCount: document.getElementById('findResultsCount'),
|
|
findStatusIcon: document.getElementById('findStatusIcon'),
|
|
findPreviousButton: document.getElementById('findPrevious'),
|
|
findNextButton: document.getElementById('findNext'),
|
|
findController: this.findController
|
|
});
|
|
|
|
this.findController.setFindBar(this.findBar);
|
|
|
|
HandTool.initialize({
|
|
container: container,
|
|
toggleHandTool: document.getElementById('toggleHandTool')
|
|
});
|
|
|
|
this.pdfDocumentProperties = new PDFDocumentProperties({
|
|
overlayName: 'documentPropertiesOverlay',
|
|
closeButton: document.getElementById('documentPropertiesClose'),
|
|
fields: {
|
|
'fileName': document.getElementById('fileNameField'),
|
|
'fileSize': document.getElementById('fileSizeField'),
|
|
'title': document.getElementById('titleField'),
|
|
'author': document.getElementById('authorField'),
|
|
'subject': document.getElementById('subjectField'),
|
|
'keywords': document.getElementById('keywordsField'),
|
|
'creationDate': document.getElementById('creationDateField'),
|
|
'modificationDate': document.getElementById('modificationDateField'),
|
|
'creator': document.getElementById('creatorField'),
|
|
'producer': document.getElementById('producerField'),
|
|
'version': document.getElementById('versionField'),
|
|
'pageCount': document.getElementById('pageCountField')
|
|
}
|
|
});
|
|
|
|
SecondaryToolbar.initialize({
|
|
toolbar: document.getElementById('secondaryToolbar'),
|
|
toggleButton: document.getElementById('secondaryToolbarToggle'),
|
|
presentationModeButton:
|
|
document.getElementById('secondaryPresentationMode'),
|
|
openFile: document.getElementById('secondaryOpenFile'),
|
|
print: document.getElementById('secondaryPrint'),
|
|
download: document.getElementById('secondaryDownload'),
|
|
viewBookmark: document.getElementById('secondaryViewBookmark'),
|
|
firstPage: document.getElementById('firstPage'),
|
|
lastPage: document.getElementById('lastPage'),
|
|
pageRotateCw: document.getElementById('pageRotateCw'),
|
|
pageRotateCcw: document.getElementById('pageRotateCcw'),
|
|
documentPropertiesButton: document.getElementById('documentProperties')
|
|
});
|
|
|
|
if (this.supportsFullscreen) {
|
|
var toolbar = SecondaryToolbar;
|
|
this.pdfPresentationMode = new PDFPresentationMode({
|
|
container: container,
|
|
viewer: viewer,
|
|
pdfViewer: this.pdfViewer,
|
|
pdfThumbnailViewer: this.pdfThumbnailViewer,
|
|
contextMenuItems: [
|
|
{ element: document.getElementById('contextFirstPage'),
|
|
handler: toolbar.firstPageClick.bind(toolbar) },
|
|
{ element: document.getElementById('contextLastPage'),
|
|
handler: toolbar.lastPageClick.bind(toolbar) },
|
|
{ element: document.getElementById('contextPageRotateCw'),
|
|
handler: toolbar.pageRotateCwClick.bind(toolbar) },
|
|
{ element: document.getElementById('contextPageRotateCcw'),
|
|
handler: toolbar.pageRotateCcwClick.bind(toolbar) }
|
|
]
|
|
});
|
|
}
|
|
|
|
PasswordPrompt.initialize({
|
|
overlayName: 'passwordOverlay',
|
|
passwordField: document.getElementById('password'),
|
|
passwordText: document.getElementById('passwordText'),
|
|
passwordSubmit: document.getElementById('passwordSubmit'),
|
|
passwordCancel: document.getElementById('passwordCancel')
|
|
});
|
|
|
|
var self = this;
|
|
var initializedPromise = Promise.all([
|
|
Preferences.get('enableWebGL').then(function resolved(value) {
|
|
PDFJS.disableWebGL = !value;
|
|
}),
|
|
Preferences.get('sidebarViewOnLoad').then(function resolved(value) {
|
|
self.preferenceSidebarViewOnLoad = value;
|
|
}),
|
|
Preferences.get('pdfBugEnabled').then(function resolved(value) {
|
|
self.preferencePdfBugEnabled = value;
|
|
}),
|
|
Preferences.get('showPreviousViewOnLoad').then(function resolved(value) {
|
|
self.preferenceShowPreviousViewOnLoad = value;
|
|
}),
|
|
Preferences.get('defaultZoomValue').then(function resolved(value) {
|
|
self.preferenceDefaultZoomValue = value;
|
|
}),
|
|
Preferences.get('disableTextLayer').then(function resolved(value) {
|
|
if (PDFJS.disableTextLayer === true) {
|
|
return;
|
|
}
|
|
PDFJS.disableTextLayer = value;
|
|
}),
|
|
Preferences.get('disableRange').then(function resolved(value) {
|
|
if (PDFJS.disableRange === true) {
|
|
return;
|
|
}
|
|
PDFJS.disableRange = value;
|
|
}),
|
|
Preferences.get('disableStream').then(function resolved(value) {
|
|
if (PDFJS.disableStream === true) {
|
|
return;
|
|
}
|
|
PDFJS.disableStream = value;
|
|
}),
|
|
Preferences.get('disableAutoFetch').then(function resolved(value) {
|
|
PDFJS.disableAutoFetch = value;
|
|
}),
|
|
Preferences.get('disableFontFace').then(function resolved(value) {
|
|
if (PDFJS.disableFontFace === true) {
|
|
return;
|
|
}
|
|
PDFJS.disableFontFace = value;
|
|
}),
|
|
Preferences.get('useOnlyCssZoom').then(function resolved(value) {
|
|
PDFJS.useOnlyCssZoom = value;
|
|
}),
|
|
Preferences.get('externalLinkTarget').then(function resolved(value) {
|
|
if (PDFJS.isExternalLinkTargetSet()) {
|
|
return;
|
|
}
|
|
PDFJS.externalLinkTarget = value;
|
|
}),
|
|
// TODO move more preferences and other async stuff here
|
|
]).catch(function (reason) { });
|
|
|
|
return initializedPromise.then(function () {
|
|
if (self.isViewerEmbedded && !PDFJS.isExternalLinkTargetSet()) {
|
|
// Prevent external links from "replacing" the viewer,
|
|
// when it's embedded in e.g. an iframe or an object.
|
|
PDFJS.externalLinkTarget = PDFJS.LinkTarget.TOP;
|
|
}
|
|
|
|
self.initialized = true;
|
|
});
|
|
},
|
|
|
|
zoomIn: function pdfViewZoomIn(ticks) {
|
|
var newScale = this.pdfViewer.currentScale;
|
|
do {
|
|
newScale = (newScale * DEFAULT_SCALE_DELTA).toFixed(2);
|
|
newScale = Math.ceil(newScale * 10) / 10;
|
|
newScale = Math.min(MAX_SCALE, newScale);
|
|
} while (--ticks > 0 && newScale < MAX_SCALE);
|
|
this.pdfViewer.currentScaleValue = newScale;
|
|
},
|
|
|
|
zoomOut: function pdfViewZoomOut(ticks) {
|
|
var newScale = this.pdfViewer.currentScale;
|
|
do {
|
|
newScale = (newScale / DEFAULT_SCALE_DELTA).toFixed(2);
|
|
newScale = Math.floor(newScale * 10) / 10;
|
|
newScale = Math.max(MIN_SCALE, newScale);
|
|
} while (--ticks > 0 && newScale > MIN_SCALE);
|
|
this.pdfViewer.currentScaleValue = newScale;
|
|
},
|
|
|
|
get pagesCount() {
|
|
return this.pdfDocument.numPages;
|
|
},
|
|
|
|
set page(val) {
|
|
this.pdfLinkService.page = val;
|
|
},
|
|
|
|
get page() { // TODO remove
|
|
return this.pdfLinkService.page;
|
|
},
|
|
|
|
get supportsPrinting() {
|
|
var canvas = document.createElement('canvas');
|
|
var value = 'mozPrintCallback' in canvas;
|
|
|
|
return PDFJS.shadow(this, 'supportsPrinting', value);
|
|
},
|
|
|
|
get supportsFullscreen() {
|
|
var doc = document.documentElement;
|
|
var support = !!(doc.requestFullscreen || doc.mozRequestFullScreen ||
|
|
doc.webkitRequestFullScreen || doc.msRequestFullscreen);
|
|
|
|
if (document.fullscreenEnabled === false ||
|
|
document.mozFullScreenEnabled === false ||
|
|
document.webkitFullscreenEnabled === false ||
|
|
document.msFullscreenEnabled === false) {
|
|
support = false;
|
|
}
|
|
if (support && PDFJS.disableFullscreen === true) {
|
|
support = false;
|
|
}
|
|
|
|
return PDFJS.shadow(this, 'supportsFullscreen', support);
|
|
},
|
|
|
|
get supportsIntegratedFind() {
|
|
var support = false;
|
|
|
|
return PDFJS.shadow(this, 'supportsIntegratedFind', support);
|
|
},
|
|
|
|
get supportsDocumentFonts() {
|
|
var support = true;
|
|
|
|
return PDFJS.shadow(this, 'supportsDocumentFonts', support);
|
|
},
|
|
|
|
get supportsDocumentColors() {
|
|
var support = true;
|
|
|
|
return PDFJS.shadow(this, 'supportsDocumentColors', support);
|
|
},
|
|
|
|
get loadingBar() {
|
|
var bar = new ProgressBar('#loadingBar', {});
|
|
|
|
return PDFJS.shadow(this, 'loadingBar', bar);
|
|
},
|
|
|
|
get supportedMouseWheelZoomModifierKeys() {
|
|
var support = {
|
|
ctrlKey: true,
|
|
metaKey: true,
|
|
};
|
|
|
|
return PDFJS.shadow(this, 'supportedMouseWheelZoomModifierKeys', support);
|
|
},
|
|
|
|
|
|
setTitleUsingUrl: function pdfViewSetTitleUsingUrl(url) {
|
|
this.url = url;
|
|
try {
|
|
this.setTitle(decodeURIComponent(getFileName(url)) || url);
|
|
} catch (e) {
|
|
// decodeURIComponent may throw URIError,
|
|
// fall back to using the unprocessed url in that case
|
|
this.setTitle(url);
|
|
}
|
|
},
|
|
|
|
setTitle: function pdfViewSetTitle(title) {
|
|
if (this.isViewerEmbedded) {
|
|
// Embedded PDF viewers should not be changing their parent page's title.
|
|
return;
|
|
}
|
|
document.title = title;
|
|
},
|
|
|
|
/**
|
|
* Closes opened PDF document.
|
|
* @returns {Promise} - Returns the promise, which is resolved when all
|
|
* destruction is completed.
|
|
*/
|
|
close: function pdfViewClose() {
|
|
var errorWrapper = document.getElementById('errorWrapper');
|
|
errorWrapper.setAttribute('hidden', 'true');
|
|
|
|
if (!this.pdfLoadingTask) {
|
|
return Promise.resolve();
|
|
}
|
|
|
|
var promise = this.pdfLoadingTask.destroy();
|
|
this.pdfLoadingTask = null;
|
|
|
|
if (this.pdfDocument) {
|
|
this.pdfDocument = null;
|
|
|
|
this.pdfThumbnailViewer.setDocument(null);
|
|
this.pdfViewer.setDocument(null);
|
|
this.pdfLinkService.setDocument(null, null);
|
|
}
|
|
|
|
if (typeof PDFBug !== 'undefined') {
|
|
PDFBug.cleanup();
|
|
}
|
|
return promise;
|
|
},
|
|
|
|
/**
|
|
* Opens PDF document specified by URL or array with additional arguments.
|
|
* @param {string|TypedArray|ArrayBuffer} file - PDF location or binary data.
|
|
* @param {Object} args - (optional) Additional arguments for the getDocument
|
|
* call, e.g. HTTP headers ('httpHeaders') or
|
|
* alternative data transport ('range').
|
|
* @returns {Promise} - Returns the promise, which is resolved when document
|
|
* is opened.
|
|
*/
|
|
open: function pdfViewOpen(file, args) {
|
|
var scale = 0;
|
|
if (arguments.length > 2 || typeof args === 'number') {
|
|
console.warn('Call of open() with obsolete signature.');
|
|
if (typeof args === 'number') {
|
|
scale = args; // scale argument was found
|
|
}
|
|
args = arguments[4] || null;
|
|
if (arguments[3] && typeof arguments[3] === 'object') {
|
|
// The pdfDataRangeTransport argument is present.
|
|
args = Object.create(args);
|
|
args.range = arguments[3];
|
|
}
|
|
if (typeof arguments[2] === 'string') {
|
|
// The password argument is present.
|
|
args = Object.create(args);
|
|
args.password = arguments[2];
|
|
}
|
|
}
|
|
|
|
if (this.pdfLoadingTask) {
|
|
// We need to destroy already opened document.
|
|
return this.close().then(function () {
|
|
// Reload the preferences if a document was previously opened.
|
|
Preferences.reload();
|
|
// ... and repeat the open() call.
|
|
return this.open(file, args);
|
|
}.bind(this));
|
|
}
|
|
|
|
var parameters = Object.create(null);
|
|
if (typeof file === 'string') { // URL
|
|
this.setTitleUsingUrl(file);
|
|
parameters.url = file;
|
|
} else if (file && 'byteLength' in file) { // ArrayBuffer
|
|
parameters.data = file;
|
|
} else if (file.url && file.originalUrl) {
|
|
this.setTitleUsingUrl(file.originalUrl);
|
|
parameters.url = file.url;
|
|
}
|
|
if (args) {
|
|
for (var prop in args) {
|
|
parameters[prop] = args[prop];
|
|
}
|
|
}
|
|
|
|
var self = this;
|
|
self.downloadComplete = false;
|
|
|
|
var loadingTask = PDFJS.getDocument(parameters);
|
|
this.pdfLoadingTask = loadingTask;
|
|
|
|
loadingTask.onPassword = function passwordNeeded(updatePassword, reason) {
|
|
PasswordPrompt.updatePassword = updatePassword;
|
|
PasswordPrompt.reason = reason;
|
|
PasswordPrompt.open();
|
|
};
|
|
|
|
loadingTask.onProgress = function getDocumentProgress(progressData) {
|
|
self.progress(progressData.loaded / progressData.total);
|
|
};
|
|
|
|
// Listen for unsupported features to trigger the fallback UI.
|
|
loadingTask.onUnsupportedFeature = this.fallback.bind(this);
|
|
|
|
var result = loadingTask.promise.then(
|
|
function getDocumentCallback(pdfDocument) {
|
|
self.load(pdfDocument, scale);
|
|
},
|
|
function getDocumentError(exception) {
|
|
var message = exception && exception.message;
|
|
var loadingErrorMessage = 'An error occurred while loading the PDF.';
|
|
|
|
if (exception instanceof PDFJS.InvalidPDFException) {
|
|
// change error message also for other builds
|
|
loadingErrorMessage = 'Invalid or corrupted PDF file.';
|
|
} else if (exception instanceof PDFJS.MissingPDFException) {
|
|
// special message for missing PDF's
|
|
loadingErrorMessage = 'Missing PDF file.';
|
|
} else if (exception instanceof PDFJS.UnexpectedResponseException) {
|
|
loadingErrorMessage = 'Unexpected server response.';
|
|
}
|
|
|
|
var moreInfo = {
|
|
message: message
|
|
};
|
|
self.error(loadingErrorMessage, moreInfo);
|
|
|
|
throw new Error(loadingErrorMessage);
|
|
}
|
|
);
|
|
|
|
if (args && args.length) {
|
|
PDFViewerApplication.pdfDocumentProperties.setFileSize(args.length);
|
|
}
|
|
return result;
|
|
},
|
|
|
|
download: function pdfViewDownload() {
|
|
function downloadByUrl() {
|
|
downloadManager.downloadUrl(url, filename);
|
|
}
|
|
|
|
var url = this.url.split('#')[0];
|
|
var filename = getPDFFileNameFromURL(url);
|
|
var downloadManager = new DownloadManager();
|
|
downloadManager.onerror = function (err) {
|
|
// This error won't really be helpful because it's likely the
|
|
// fallback won't work either (or is already open).
|
|
PDFViewerApplication.error('PDF failed to download.');
|
|
};
|
|
|
|
if (!this.pdfDocument) { // the PDF is not ready yet
|
|
downloadByUrl();
|
|
return;
|
|
}
|
|
|
|
if (!this.downloadComplete) { // the PDF is still downloading
|
|
downloadByUrl();
|
|
return;
|
|
}
|
|
|
|
this.pdfDocument.getData().then(
|
|
function getDataSuccess(data) {
|
|
var blob = PDFJS.createBlob(data, 'application/pdf');
|
|
downloadManager.download(blob, url, filename);
|
|
},
|
|
downloadByUrl // Error occurred try downloading with just the url.
|
|
).then(null, downloadByUrl);
|
|
},
|
|
|
|
fallback: function pdfViewFallback(featureId) {
|
|
},
|
|
|
|
/**
|
|
* Show the error box.
|
|
* @param {String} message A message that is human readable.
|
|
* @param {Object} moreInfo (optional) Further information about the error
|
|
* that is more technical. Should have a 'message'
|
|
* and optionally a 'stack' property.
|
|
*/
|
|
error: function pdfViewError(message, moreInfo) {
|
|
var moreInfoText = 'PDF.js v' + (PDFJS.version || '?') + '(build: ' + (PDFJS.build || '?') + ')\n';
|
|
if (moreInfo) {
|
|
moreInfoText += 'Message: ' + moreInfo.message
|
|
if (moreInfo.stack) {
|
|
moreInfoText += '\nStack: ' + moreInfo.stack;
|
|
} else {
|
|
if (moreInfo.filename) {
|
|
moreInfoText += '\nFile: ' + moreInfo.filename;
|
|
}
|
|
if (moreInfo.lineNumber) {
|
|
moreInfoText += '\nLine: ' + moreInfo.lineNumber;
|
|
}
|
|
}
|
|
}
|
|
|
|
var errorWrapper = document.getElementById('errorWrapper');
|
|
errorWrapper.removeAttribute('hidden');
|
|
|
|
var errorMessage = document.getElementById('errorMessage');
|
|
errorMessage.textContent = message;
|
|
|
|
var closeButton = document.getElementById('errorClose');
|
|
closeButton.onclick = function() {
|
|
errorWrapper.setAttribute('hidden', 'true');
|
|
};
|
|
|
|
var errorMoreInfo = document.getElementById('errorMoreInfo');
|
|
var moreInfoButton = document.getElementById('errorShowMore');
|
|
var lessInfoButton = document.getElementById('errorShowLess');
|
|
moreInfoButton.onclick = function() {
|
|
errorMoreInfo.removeAttribute('hidden');
|
|
moreInfoButton.setAttribute('hidden', 'true');
|
|
lessInfoButton.removeAttribute('hidden');
|
|
errorMoreInfo.style.height = errorMoreInfo.scrollHeight + 'px';
|
|
};
|
|
lessInfoButton.onclick = function() {
|
|
errorMoreInfo.setAttribute('hidden', 'true');
|
|
moreInfoButton.removeAttribute('hidden');
|
|
lessInfoButton.setAttribute('hidden', 'true');
|
|
};
|
|
moreInfoButton.oncontextmenu = noContextMenuHandler;
|
|
lessInfoButton.oncontextmenu = noContextMenuHandler;
|
|
closeButton.oncontextmenu = noContextMenuHandler;
|
|
moreInfoButton.removeAttribute('hidden');
|
|
lessInfoButton.setAttribute('hidden', 'true');
|
|
errorMoreInfo.value = moreInfoText;
|
|
},
|
|
|
|
progress: function pdfViewProgress(level) {
|
|
var percent = Math.round(level * 100);
|
|
// When we transition from full request to range requests, it's possible
|
|
// that we discard some of the loaded data. This can cause the loading
|
|
// bar to move backwards. So prevent this by only updating the bar if it
|
|
// increases.
|
|
if (percent > this.loadingBar.percent || isNaN(percent)) {
|
|
this.loadingBar.percent = percent;
|
|
|
|
// When disableAutoFetch is enabled, it's not uncommon for the entire file
|
|
// to never be fetched (depends on e.g. the file structure). In this case
|
|
// the loading bar will not be completely filled, nor will it be hidden.
|
|
// To prevent displaying a partially filled loading bar permanently, we
|
|
// hide it when no data has been loaded during a certain amount of time.
|
|
if (PDFJS.disableAutoFetch && percent) {
|
|
if (this.disableAutoFetchLoadingBarTimeout) {
|
|
clearTimeout(this.disableAutoFetchLoadingBarTimeout);
|
|
this.disableAutoFetchLoadingBarTimeout = null;
|
|
}
|
|
this.loadingBar.show();
|
|
|
|
this.disableAutoFetchLoadingBarTimeout = setTimeout(function () {
|
|
this.loadingBar.hide();
|
|
this.disableAutoFetchLoadingBarTimeout = null;
|
|
}.bind(this), DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT);
|
|
}
|
|
}
|
|
},
|
|
|
|
load: function pdfViewLoad(pdfDocument, scale) {
|
|
var self = this;
|
|
scale = scale || UNKNOWN_SCALE;
|
|
|
|
this.findController.reset();
|
|
|
|
this.pdfDocument = pdfDocument;
|
|
|
|
this.pdfDocumentProperties.setDocumentAndUrl(pdfDocument, this.url);
|
|
|
|
var downloadedPromise = pdfDocument.getDownloadInfo().then(function() {
|
|
self.downloadComplete = true;
|
|
self.loadingBar.hide();
|
|
});
|
|
|
|
var pagesCount = pdfDocument.numPages;
|
|
document.getElementById('numPages').textContent = 'of ' + pagesCount;
|
|
document.getElementById('pageNumber').max = pagesCount;
|
|
|
|
var id = this.documentFingerprint = pdfDocument.fingerprint;
|
|
var store = this.store = new ViewHistory(id);
|
|
|
|
var baseDocumentUrl = null;
|
|
this.pdfLinkService.setDocument(pdfDocument, baseDocumentUrl);
|
|
|
|
var pdfViewer = this.pdfViewer;
|
|
pdfViewer.currentScale = scale;
|
|
pdfViewer.setDocument(pdfDocument);
|
|
var firstPagePromise = pdfViewer.firstPagePromise;
|
|
var pagesPromise = pdfViewer.pagesPromise;
|
|
var onePageRendered = pdfViewer.onePageRendered;
|
|
|
|
this.pageRotation = 0;
|
|
this.isInitialViewSet = false;
|
|
|
|
this.pdfThumbnailViewer.setDocument(pdfDocument);
|
|
|
|
firstPagePromise.then(function(pdfPage) {
|
|
downloadedPromise.then(function () {
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('documentload', true, true, {});
|
|
window.dispatchEvent(event);
|
|
});
|
|
|
|
self.loadingBar.setWidth(document.getElementById('viewer'));
|
|
|
|
if (!PDFJS.disableHistory && !self.isViewerEmbedded) {
|
|
// The browsing history is only enabled when the viewer is standalone,
|
|
// i.e. not when it is embedded in a web page.
|
|
if (!self.preferenceShowPreviousViewOnLoad) {
|
|
self.pdfHistory.clearHistoryState();
|
|
}
|
|
self.pdfHistory.initialize(self.documentFingerprint);
|
|
|
|
if (self.pdfHistory.initialDestination) {
|
|
self.initialDestination = self.pdfHistory.initialDestination;
|
|
} else if (self.pdfHistory.initialBookmark) {
|
|
self.initialBookmark = self.pdfHistory.initialBookmark;
|
|
}
|
|
}
|
|
|
|
var initialParams = {
|
|
destination: self.initialDestination,
|
|
bookmark: self.initialBookmark,
|
|
hash: null,
|
|
};
|
|
|
|
store.initializedPromise.then(function resolved() {
|
|
var storedHash = null;
|
|
if (self.preferenceShowPreviousViewOnLoad &&
|
|
store.get('exists', false)) {
|
|
var pageNum = store.get('page', '1');
|
|
var zoom = self.preferenceDefaultZoomValue ||
|
|
store.get('zoom', DEFAULT_SCALE_VALUE);
|
|
var left = store.get('scrollLeft', '0');
|
|
var top = store.get('scrollTop', '0');
|
|
|
|
storedHash = 'page=' + pageNum + '&zoom=' + zoom + ',' +
|
|
left + ',' + top;
|
|
} else if (self.preferenceDefaultZoomValue) {
|
|
storedHash = 'page=1&zoom=' + self.preferenceDefaultZoomValue;
|
|
}
|
|
self.setInitialView(storedHash, scale);
|
|
|
|
initialParams.hash = storedHash;
|
|
|
|
// Make all navigation keys work on document load,
|
|
// unless the viewer is embedded in a web page.
|
|
if (!self.isViewerEmbedded) {
|
|
self.pdfViewer.focus();
|
|
}
|
|
}, function rejected(reason) {
|
|
console.error(reason);
|
|
self.setInitialView(null, scale);
|
|
});
|
|
|
|
// For documents with different page sizes,
|
|
// ensure that the correct location becomes visible on load.
|
|
pagesPromise.then(function resolved() {
|
|
if (!initialParams.destination && !initialParams.bookmark &&
|
|
!initialParams.hash) {
|
|
return;
|
|
}
|
|
if (self.hasEqualPageSizes) {
|
|
return;
|
|
}
|
|
self.initialDestination = initialParams.destination;
|
|
self.initialBookmark = initialParams.bookmark;
|
|
|
|
self.pdfViewer.currentScaleValue = self.pdfViewer.currentScaleValue;
|
|
self.setInitialView(initialParams.hash, scale);
|
|
});
|
|
});
|
|
|
|
pagesPromise.then(function() {
|
|
if (self.supportsPrinting) {
|
|
pdfDocument.getJavaScript().then(function(javaScript) {
|
|
if (javaScript.length) {
|
|
console.warn('Warning: JavaScript is not supported');
|
|
self.fallback(PDFJS.UNSUPPORTED_FEATURES.javaScript);
|
|
}
|
|
// Hack to support auto printing.
|
|
var regex = /\bprint\s*\(/;
|
|
for (var i = 0, ii = javaScript.length; i < ii; i++) {
|
|
var js = javaScript[i];
|
|
if (js && regex.test(js)) {
|
|
setTimeout(function() {
|
|
window.print();
|
|
});
|
|
return;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
// outline depends on pagesRefMap
|
|
var promises = [pagesPromise, this.animationStartedPromise];
|
|
Promise.all(promises).then(function() {
|
|
pdfDocument.getOutline().then(function(outline) {
|
|
var container = document.getElementById('outlineView');
|
|
self.outline = new PDFOutlineView({
|
|
container: container,
|
|
outline: outline,
|
|
linkService: self.pdfLinkService
|
|
});
|
|
self.outline.render();
|
|
document.getElementById('viewOutline').disabled = !outline;
|
|
|
|
if (!outline && !container.classList.contains('hidden')) {
|
|
self.switchSidebarView('thumbs');
|
|
}
|
|
if (outline &&
|
|
self.preferenceSidebarViewOnLoad === SidebarView.OUTLINE) {
|
|
self.switchSidebarView('outline', true);
|
|
}
|
|
});
|
|
pdfDocument.getAttachments().then(function(attachments) {
|
|
var container = document.getElementById('attachmentsView');
|
|
self.attachments = new PDFAttachmentView({
|
|
container: container,
|
|
attachments: attachments,
|
|
downloadManager: new DownloadManager()
|
|
});
|
|
self.attachments.render();
|
|
document.getElementById('viewAttachments').disabled = !attachments;
|
|
|
|
if (!attachments && !container.classList.contains('hidden')) {
|
|
self.switchSidebarView('thumbs');
|
|
}
|
|
if (attachments &&
|
|
self.preferenceSidebarViewOnLoad === SidebarView.ATTACHMENTS) {
|
|
self.switchSidebarView('attachments', true);
|
|
}
|
|
});
|
|
});
|
|
|
|
if (self.preferenceSidebarViewOnLoad === SidebarView.THUMBS) {
|
|
Promise.all([firstPagePromise, onePageRendered]).then(function () {
|
|
self.switchSidebarView('thumbs', true);
|
|
});
|
|
}
|
|
|
|
pdfDocument.getMetadata().then(function(data) {
|
|
var info = data.info, metadata = data.metadata;
|
|
self.documentInfo = info;
|
|
self.metadata = metadata;
|
|
|
|
// Provides some basic debug information
|
|
console.log('PDF ' + pdfDocument.fingerprint + ' [' +
|
|
info.PDFFormatVersion + ' ' + (info.Producer || '-').trim() +
|
|
' / ' + (info.Creator || '-').trim() + ']' +
|
|
' (PDF.js: ' + (PDFJS.version || '-') +
|
|
(!PDFJS.disableWebGL ? ' [WebGL]' : '') + ')');
|
|
|
|
var pdfTitle;
|
|
if (metadata && metadata.has('dc:title')) {
|
|
var title = metadata.get('dc:title');
|
|
// Ghostscript sometimes return 'Untitled', sets the title to 'Untitled'
|
|
if (title !== 'Untitled') {
|
|
pdfTitle = title;
|
|
}
|
|
}
|
|
|
|
if (!pdfTitle && info && info['Title']) {
|
|
pdfTitle = info['Title'];
|
|
}
|
|
|
|
if (pdfTitle) {
|
|
self.setTitle(pdfTitle + ' - ' + document.title);
|
|
}
|
|
|
|
if (info.IsAcroFormPresent) {
|
|
console.warn('Warning: AcroForm/XFA is not supported');
|
|
self.fallback(PDFJS.UNSUPPORTED_FEATURES.forms);
|
|
}
|
|
|
|
});
|
|
},
|
|
|
|
setInitialView: function pdfViewSetInitialView(storedHash, scale) {
|
|
this.isInitialViewSet = true;
|
|
|
|
// When opening a new file, when one is already loaded in the viewer,
|
|
// ensure that the 'pageNumber' element displays the correct value.
|
|
document.getElementById('pageNumber').value =
|
|
this.pdfViewer.currentPageNumber;
|
|
|
|
if (this.initialDestination) {
|
|
this.pdfLinkService.navigateTo(this.initialDestination);
|
|
this.initialDestination = null;
|
|
} else if (this.initialBookmark) {
|
|
this.pdfLinkService.setHash(this.initialBookmark);
|
|
this.pdfHistory.push({ hash: this.initialBookmark }, true);
|
|
this.initialBookmark = null;
|
|
} else if (storedHash) {
|
|
this.pdfLinkService.setHash(storedHash);
|
|
} else if (scale) {
|
|
this.pdfViewer.currentScaleValue = scale;
|
|
this.page = 1;
|
|
}
|
|
|
|
if (!this.pdfViewer.currentScaleValue) {
|
|
// Scale was not initialized: invalid bookmark or scale was not specified.
|
|
// Setting the default one.
|
|
this.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
|
|
}
|
|
},
|
|
|
|
cleanup: function pdfViewCleanup() {
|
|
if (!this.pdfDocument) {
|
|
return; // run cleanup when document is loaded
|
|
}
|
|
this.pdfViewer.cleanup();
|
|
this.pdfThumbnailViewer.cleanup();
|
|
this.pdfDocument.cleanup();
|
|
},
|
|
|
|
forceRendering: function pdfViewForceRendering() {
|
|
this.pdfRenderingQueue.printing = this.printing;
|
|
this.pdfRenderingQueue.isThumbnailViewEnabled = this.sidebarOpen;
|
|
this.pdfRenderingQueue.renderHighestPriority();
|
|
},
|
|
|
|
refreshThumbnailViewer: function pdfViewRefreshThumbnailViewer() {
|
|
var pdfViewer = this.pdfViewer;
|
|
var thumbnailViewer = this.pdfThumbnailViewer;
|
|
|
|
// set thumbnail images of rendered pages
|
|
var pagesCount = pdfViewer.pagesCount;
|
|
for (var pageIndex = 0; pageIndex < pagesCount; pageIndex++) {
|
|
var pageView = pdfViewer.getPageView(pageIndex);
|
|
if (pageView && pageView.renderingState === RenderingStates.FINISHED) {
|
|
var thumbnailView = thumbnailViewer.getThumbnail(pageIndex);
|
|
thumbnailView.setImage(pageView);
|
|
}
|
|
}
|
|
|
|
thumbnailViewer.scrollThumbnailIntoView(this.page);
|
|
},
|
|
|
|
switchSidebarView: function pdfViewSwitchSidebarView(view, openSidebar) {
|
|
if (openSidebar && !this.sidebarOpen) {
|
|
document.getElementById('sidebarToggle').click();
|
|
}
|
|
var thumbsView = document.getElementById('thumbnailView');
|
|
var outlineView = document.getElementById('outlineView');
|
|
var attachmentsView = document.getElementById('attachmentsView');
|
|
|
|
var thumbsButton = document.getElementById('viewThumbnail');
|
|
var outlineButton = document.getElementById('viewOutline');
|
|
var attachmentsButton = document.getElementById('viewAttachments');
|
|
|
|
switch (view) {
|
|
case 'thumbs':
|
|
var wasAnotherViewVisible = thumbsView.classList.contains('hidden');
|
|
|
|
thumbsButton.classList.add('toggled');
|
|
outlineButton.classList.remove('toggled');
|
|
attachmentsButton.classList.remove('toggled');
|
|
thumbsView.classList.remove('hidden');
|
|
outlineView.classList.add('hidden');
|
|
attachmentsView.classList.add('hidden');
|
|
|
|
this.forceRendering();
|
|
|
|
if (wasAnotherViewVisible) {
|
|
this.pdfThumbnailViewer.ensureThumbnailVisible(this.page);
|
|
}
|
|
break;
|
|
|
|
case 'outline':
|
|
if (outlineButton.disabled) {
|
|
return;
|
|
}
|
|
thumbsButton.classList.remove('toggled');
|
|
outlineButton.classList.add('toggled');
|
|
attachmentsButton.classList.remove('toggled');
|
|
thumbsView.classList.add('hidden');
|
|
outlineView.classList.remove('hidden');
|
|
attachmentsView.classList.add('hidden');
|
|
break;
|
|
|
|
case 'attachments':
|
|
if (attachmentsButton.disabled) {
|
|
return;
|
|
}
|
|
thumbsButton.classList.remove('toggled');
|
|
outlineButton.classList.remove('toggled');
|
|
attachmentsButton.classList.add('toggled');
|
|
thumbsView.classList.add('hidden');
|
|
outlineView.classList.add('hidden');
|
|
attachmentsView.classList.remove('hidden');
|
|
break;
|
|
}
|
|
},
|
|
|
|
beforePrint: function pdfViewSetupBeforePrint() {
|
|
if (!this.supportsPrinting) {
|
|
var printMessage = 'Warning: Printing is not fully supported by this browser.';
|
|
this.error(printMessage);
|
|
return;
|
|
}
|
|
|
|
var alertNotReady = false;
|
|
var i, ii;
|
|
if (!this.pdfDocument || !this.pagesCount) {
|
|
alertNotReady = true;
|
|
} else {
|
|
for (i = 0, ii = this.pagesCount; i < ii; ++i) {
|
|
if (!this.pdfViewer.getPageView(i).pdfPage) {
|
|
alertNotReady = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (alertNotReady) {
|
|
var notReadyMessage = 'Warning: The PDF is not fully loaded for printing.';
|
|
window.alert(notReadyMessage);
|
|
return;
|
|
}
|
|
|
|
this.printing = true;
|
|
this.forceRendering();
|
|
|
|
var body = document.querySelector('body');
|
|
body.setAttribute('data-mozPrintCallback', true);
|
|
|
|
if (!this.hasEqualPageSizes) {
|
|
console.warn('Not all pages have the same size. The printed result ' +
|
|
'may be incorrect!');
|
|
}
|
|
|
|
// Insert a @page + size rule to make sure that the page size is correctly
|
|
// set. Note that we assume that all pages have the same size, because
|
|
// variable-size pages are not supported yet (at least in Chrome & Firefox).
|
|
// TODO(robwu): Use named pages when size calculation bugs get resolved
|
|
// (e.g. https://crbug.com/355116) AND when support for named pages is
|
|
// added (http://www.w3.org/TR/css3-page/#using-named-pages).
|
|
// In browsers where @page + size is not supported (such as Firefox,
|
|
// https://bugzil.la/851441), the next stylesheet will be ignored and the
|
|
// user has to select the correct paper size in the UI if wanted.
|
|
this.pageStyleSheet = document.createElement('style');
|
|
var pageSize = this.pdfViewer.getPageView(0).pdfPage.getViewport(1);
|
|
this.pageStyleSheet.textContent =
|
|
// "size:<width> <height>" is what we need. But also add "A4" because
|
|
// Firefox incorrectly reports support for the other value.
|
|
'@supports ((size:A4) and (size:1pt 1pt)) {' +
|
|
'@page { size: ' + pageSize.width + 'pt ' + pageSize.height + 'pt;}' +
|
|
// The canvas and each ancestor node must have a height of 100% to make
|
|
// sure that each canvas is printed on exactly one page.
|
|
'#printContainer {height:100%}' +
|
|
'#printContainer > div {width:100% !important;height:100% !important;}' +
|
|
'}';
|
|
body.appendChild(this.pageStyleSheet);
|
|
|
|
for (i = 0, ii = this.pagesCount; i < ii; ++i) {
|
|
this.pdfViewer.getPageView(i).beforePrint();
|
|
}
|
|
|
|
},
|
|
|
|
// Whether all pages of the PDF have the same width and height.
|
|
get hasEqualPageSizes() {
|
|
var firstPage = this.pdfViewer.getPageView(0);
|
|
for (var i = 1, ii = this.pagesCount; i < ii; ++i) {
|
|
var pageView = this.pdfViewer.getPageView(i);
|
|
if (pageView.width !== firstPage.width ||
|
|
pageView.height !== firstPage.height) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
},
|
|
|
|
afterPrint: function pdfViewSetupAfterPrint() {
|
|
var div = document.getElementById('printContainer');
|
|
while (div.hasChildNodes()) {
|
|
div.removeChild(div.lastChild);
|
|
}
|
|
|
|
if (this.pageStyleSheet && this.pageStyleSheet.parentNode) {
|
|
this.pageStyleSheet.parentNode.removeChild(this.pageStyleSheet);
|
|
this.pageStyleSheet = null;
|
|
}
|
|
|
|
this.printing = false;
|
|
this.forceRendering();
|
|
},
|
|
|
|
rotatePages: function pdfViewRotatePages(delta) {
|
|
var pageNumber = this.page;
|
|
this.pageRotation = (this.pageRotation + 360 + delta) % 360;
|
|
this.pdfViewer.pagesRotation = this.pageRotation;
|
|
this.pdfThumbnailViewer.pagesRotation = this.pageRotation;
|
|
|
|
this.forceRendering();
|
|
|
|
this.pdfViewer.scrollPageIntoView(pageNumber);
|
|
},
|
|
|
|
requestPresentationMode: function pdfViewRequestPresentationMode() {
|
|
if (!this.pdfPresentationMode) {
|
|
return;
|
|
}
|
|
this.pdfPresentationMode.request();
|
|
},
|
|
|
|
/**
|
|
* @param {number} delta - The delta value from the mouse event.
|
|
*/
|
|
scrollPresentationMode: function pdfViewScrollPresentationMode(delta) {
|
|
if (!this.pdfPresentationMode) {
|
|
return;
|
|
}
|
|
this.pdfPresentationMode.mouseScroll(delta);
|
|
}
|
|
};
|
|
window.PDFView = PDFViewerApplication; // obsolete name, using it as an alias
|
|
|
|
|
|
var HOSTED_VIEWER_ORIGINS = ['null',
|
|
'http://mozilla.github.io', 'https://mozilla.github.io'];
|
|
function validateFileURL(file) {
|
|
try {
|
|
var viewerOrigin = new URL(window.location.href).origin || 'null';
|
|
if (HOSTED_VIEWER_ORIGINS.indexOf(viewerOrigin) >= 0) {
|
|
// Hosted or local viewer, allow for any file locations
|
|
return;
|
|
}
|
|
var fileOrigin = new URL(file, window.location.href).origin;
|
|
// Removing of the following line will not guarantee that the viewer will
|
|
// start accepting URLs from foreign origin -- CORS headers on the remote
|
|
// server must be properly configured.
|
|
if (fileOrigin !== viewerOrigin) {
|
|
throw new Error('file origin does not match viewer\'s');
|
|
}
|
|
} catch (e) {
|
|
var message = e && e.message;
|
|
var loadingErrorMessage = 'An error occurred while loading the PDF.';
|
|
|
|
var moreInfo = {
|
|
message: message
|
|
};
|
|
PDFViewerApplication.error(loadingErrorMessage, moreInfo);
|
|
throw e;
|
|
}
|
|
}
|
|
|
|
function webViewerLoad(evt) {
|
|
configure(PDFJS);
|
|
PDFViewerApplication.initialize().then(webViewerInitialized);
|
|
}
|
|
|
|
function webViewerInitialized() {
|
|
var queryString = document.location.search.substring(1);
|
|
var params = parseQueryString(queryString);
|
|
var file = 'file' in params ? params.file : DEFAULT_URL;
|
|
validateFileURL(file);
|
|
|
|
var fileInput = document.createElement('input');
|
|
fileInput.id = 'fileInput';
|
|
fileInput.className = 'fileInput';
|
|
fileInput.setAttribute('type', 'file');
|
|
fileInput.oncontextmenu = noContextMenuHandler;
|
|
document.body.appendChild(fileInput);
|
|
|
|
if (!window.File || !window.FileReader || !window.FileList || !window.Blob) {
|
|
document.getElementById('openFile').setAttribute('hidden', 'true');
|
|
document.getElementById('secondaryOpenFile').setAttribute('hidden', 'true');
|
|
} else {
|
|
document.getElementById('fileInput').value = null;
|
|
}
|
|
|
|
var locale = PDFJS.locale || navigator.language;
|
|
|
|
if (PDFViewerApplication.preferencePdfBugEnabled) {
|
|
// Special debugging flags in the hash section of the URL.
|
|
var hash = document.location.hash.substring(1);
|
|
var hashParams = parseQueryString(hash);
|
|
|
|
if ('disableworker' in hashParams) {
|
|
PDFJS.disableWorker = (hashParams['disableworker'] === 'true');
|
|
}
|
|
if ('disablerange' in hashParams) {
|
|
PDFJS.disableRange = (hashParams['disablerange'] === 'true');
|
|
}
|
|
if ('disablestream' in hashParams) {
|
|
PDFJS.disableStream = (hashParams['disablestream'] === 'true');
|
|
}
|
|
if ('disableautofetch' in hashParams) {
|
|
PDFJS.disableAutoFetch = (hashParams['disableautofetch'] === 'true');
|
|
}
|
|
if ('disablefontface' in hashParams) {
|
|
PDFJS.disableFontFace = (hashParams['disablefontface'] === 'true');
|
|
}
|
|
if ('disablehistory' in hashParams) {
|
|
PDFJS.disableHistory = (hashParams['disablehistory'] === 'true');
|
|
}
|
|
if ('webgl' in hashParams) {
|
|
PDFJS.disableWebGL = (hashParams['webgl'] !== 'true');
|
|
}
|
|
if ('useonlycsszoom' in hashParams) {
|
|
PDFJS.useOnlyCssZoom = (hashParams['useonlycsszoom'] === 'true');
|
|
}
|
|
if ('verbosity' in hashParams) {
|
|
PDFJS.verbosity = hashParams['verbosity'] | 0;
|
|
}
|
|
if ('ignorecurrentpositiononzoom' in hashParams) {
|
|
IGNORE_CURRENT_POSITION_ON_ZOOM =
|
|
(hashParams['ignorecurrentpositiononzoom'] === 'true');
|
|
}
|
|
if ('locale' in hashParams) {
|
|
locale = hashParams['locale'];
|
|
}
|
|
if ('textlayer' in hashParams) {
|
|
switch (hashParams['textlayer']) {
|
|
case 'off':
|
|
PDFJS.disableTextLayer = true;
|
|
break;
|
|
case 'visible':
|
|
case 'shadow':
|
|
case 'hover':
|
|
var viewer = document.getElementById('viewer');
|
|
viewer.classList.add('textLayer-' + hashParams['textlayer']);
|
|
break;
|
|
}
|
|
}
|
|
if ('pdfbug' in hashParams) {
|
|
PDFJS.pdfBug = true;
|
|
var pdfBug = hashParams['pdfbug'];
|
|
var enabled = pdfBug.split(',');
|
|
PDFBug.enable(enabled);
|
|
PDFBug.init();
|
|
}
|
|
}
|
|
|
|
if (!PDFViewerApplication.supportsPrinting) {
|
|
document.getElementById('print').classList.add('hidden');
|
|
document.getElementById('secondaryPrint').classList.add('hidden');
|
|
}
|
|
|
|
if (!PDFViewerApplication.supportsFullscreen) {
|
|
document.getElementById('presentationMode').classList.add('hidden');
|
|
document.getElementById('secondaryPresentationMode').
|
|
classList.add('hidden');
|
|
}
|
|
|
|
if (PDFViewerApplication.supportsIntegratedFind) {
|
|
document.getElementById('viewFind').classList.add('hidden');
|
|
}
|
|
|
|
// Suppress context menus for some controls
|
|
document.getElementById('scaleSelect').oncontextmenu = noContextMenuHandler;
|
|
|
|
var mainContainer = document.getElementById('mainContainer');
|
|
var outerContainer = document.getElementById('outerContainer');
|
|
mainContainer.addEventListener('transitionend', function(e) {
|
|
if (e.target === mainContainer) {
|
|
var event = document.createEvent('UIEvents');
|
|
event.initUIEvent('resize', false, false, window, 0);
|
|
window.dispatchEvent(event);
|
|
outerContainer.classList.remove('sidebarMoving');
|
|
}
|
|
}, true);
|
|
|
|
document.getElementById('sidebarToggle').addEventListener('click',
|
|
function() {
|
|
this.classList.toggle('toggled');
|
|
outerContainer.classList.add('sidebarMoving');
|
|
outerContainer.classList.toggle('sidebarOpen');
|
|
PDFViewerApplication.sidebarOpen =
|
|
outerContainer.classList.contains('sidebarOpen');
|
|
if (PDFViewerApplication.sidebarOpen) {
|
|
PDFViewerApplication.refreshThumbnailViewer();
|
|
}
|
|
PDFViewerApplication.forceRendering();
|
|
});
|
|
|
|
document.getElementById('viewThumbnail').addEventListener('click',
|
|
function() {
|
|
PDFViewerApplication.switchSidebarView('thumbs');
|
|
});
|
|
|
|
document.getElementById('viewOutline').addEventListener('click',
|
|
function() {
|
|
PDFViewerApplication.switchSidebarView('outline');
|
|
});
|
|
|
|
document.getElementById('viewOutline').addEventListener('dblclick',
|
|
function() {
|
|
PDFViewerApplication.outline.toggleOutlineTree();
|
|
});
|
|
|
|
document.getElementById('viewAttachments').addEventListener('click',
|
|
function() {
|
|
PDFViewerApplication.switchSidebarView('attachments');
|
|
});
|
|
|
|
document.getElementById('previous').addEventListener('click',
|
|
function() {
|
|
PDFViewerApplication.page--;
|
|
});
|
|
|
|
document.getElementById('next').addEventListener('click',
|
|
function() {
|
|
PDFViewerApplication.page++;
|
|
});
|
|
|
|
document.getElementById('zoomIn').addEventListener('click',
|
|
function() {
|
|
PDFViewerApplication.zoomIn();
|
|
});
|
|
|
|
document.getElementById('zoomOut').addEventListener('click',
|
|
function() {
|
|
PDFViewerApplication.zoomOut();
|
|
});
|
|
|
|
document.getElementById('pageNumber').addEventListener('click', function() {
|
|
this.select();
|
|
});
|
|
|
|
document.getElementById('pageNumber').addEventListener('change', function() {
|
|
// Handle the user inputting a floating point number.
|
|
PDFViewerApplication.page = (this.value | 0);
|
|
|
|
if (this.value !== (this.value | 0).toString()) {
|
|
this.value = PDFViewerApplication.page;
|
|
}
|
|
});
|
|
|
|
document.getElementById('scaleSelect').addEventListener('change', function() {
|
|
if (this.value === 'custom') {
|
|
return;
|
|
}
|
|
PDFViewerApplication.pdfViewer.currentScaleValue = this.value;
|
|
});
|
|
|
|
document.getElementById('presentationMode').addEventListener('click',
|
|
SecondaryToolbar.presentationModeClick.bind(SecondaryToolbar));
|
|
|
|
document.getElementById('openFile').addEventListener('click',
|
|
SecondaryToolbar.openFileClick.bind(SecondaryToolbar));
|
|
|
|
document.getElementById('print').addEventListener('click',
|
|
SecondaryToolbar.printClick.bind(SecondaryToolbar));
|
|
|
|
document.getElementById('download').addEventListener('click',
|
|
SecondaryToolbar.downloadClick.bind(SecondaryToolbar));
|
|
|
|
|
|
if (file && file.lastIndexOf('file:', 0) === 0) {
|
|
// file:-scheme. Load the contents in the main thread because QtWebKit
|
|
// cannot load file:-URLs in a Web Worker. file:-URLs are usually loaded
|
|
// very quickly, so there is no need to set up progress event listeners.
|
|
PDFViewerApplication.setTitleUsingUrl(file);
|
|
var xhr = new XMLHttpRequest();
|
|
xhr.onload = function() {
|
|
PDFViewerApplication.open(new Uint8Array(xhr.response));
|
|
};
|
|
try {
|
|
xhr.open('GET', file);
|
|
xhr.responseType = 'arraybuffer';
|
|
xhr.send();
|
|
} catch (e) {
|
|
PDFViewerApplication.error('An error occurred while loading the PDF.', e);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (file) {
|
|
PDFViewerApplication.open(file);
|
|
}
|
|
}
|
|
|
|
document.addEventListener('DOMContentLoaded', webViewerLoad, true);
|
|
|
|
document.addEventListener('pagerendered', function (e) {
|
|
var pageNumber = e.detail.pageNumber;
|
|
var pageIndex = pageNumber - 1;
|
|
var pageView = PDFViewerApplication.pdfViewer.getPageView(pageIndex);
|
|
|
|
if (PDFViewerApplication.sidebarOpen) {
|
|
var thumbnailView = PDFViewerApplication.pdfThumbnailViewer.
|
|
getThumbnail(pageIndex);
|
|
thumbnailView.setImage(pageView);
|
|
}
|
|
|
|
if (PDFJS.pdfBug && Stats.enabled && pageView.stats) {
|
|
Stats.add(pageNumber, pageView.stats);
|
|
}
|
|
|
|
if (pageView.error) {
|
|
PDFViewerApplication.error('An error occurred while rendering the page.', pageView.error);
|
|
}
|
|
|
|
// If the page is still visible when it has finished rendering,
|
|
// ensure that the page number input loading indicator is hidden.
|
|
if (pageNumber === PDFViewerApplication.page) {
|
|
var pageNumberInput = document.getElementById('pageNumber');
|
|
pageNumberInput.classList.remove(PAGE_NUMBER_LOADING_INDICATOR);
|
|
}
|
|
|
|
}, true);
|
|
|
|
document.addEventListener('textlayerrendered', function (e) {
|
|
var pageIndex = e.detail.pageNumber - 1;
|
|
var pageView = PDFViewerApplication.pdfViewer.getPageView(pageIndex);
|
|
|
|
}, true);
|
|
|
|
document.addEventListener('pagemode', function (evt) {
|
|
if (!PDFViewerApplication.initialized) {
|
|
return;
|
|
}
|
|
// Handle the 'pagemode' hash parameter, see also `PDFLinkService_setHash`.
|
|
var mode = evt.detail.mode;
|
|
switch (mode) {
|
|
case 'bookmarks':
|
|
// Note: Our code calls this property 'outline', even though the
|
|
// Open Parameter specification calls it 'bookmarks'.
|
|
mode = 'outline';
|
|
/* falls through */
|
|
case 'thumbs':
|
|
case 'attachments':
|
|
PDFViewerApplication.switchSidebarView(mode, true);
|
|
break;
|
|
case 'none':
|
|
if (PDFViewerApplication.sidebarOpen) {
|
|
document.getElementById('sidebarToggle').click();
|
|
}
|
|
break;
|
|
}
|
|
}, true);
|
|
|
|
document.addEventListener('namedaction', function (e) {
|
|
if (!PDFViewerApplication.initialized) {
|
|
return;
|
|
}
|
|
// Processing couple of named actions that might be useful.
|
|
// See also PDFLinkService.executeNamedAction
|
|
var action = e.detail.action;
|
|
switch (action) {
|
|
case 'GoToPage':
|
|
document.getElementById('pageNumber').focus();
|
|
break;
|
|
|
|
case 'Find':
|
|
if (!PDFViewerApplication.supportsIntegratedFind) {
|
|
PDFViewerApplication.findBar.toggle();
|
|
}
|
|
break;
|
|
}
|
|
}, true);
|
|
|
|
window.addEventListener('presentationmodechanged', function (e) {
|
|
var active = e.detail.active;
|
|
var switchInProgress = e.detail.switchInProgress;
|
|
PDFViewerApplication.pdfViewer.presentationModeState =
|
|
switchInProgress ? PresentationModeState.CHANGING :
|
|
active ? PresentationModeState.FULLSCREEN : PresentationModeState.NORMAL;
|
|
});
|
|
|
|
window.addEventListener('updateviewarea', function (evt) {
|
|
if (!PDFViewerApplication.initialized) {
|
|
return;
|
|
}
|
|
var location = evt.location;
|
|
|
|
PDFViewerApplication.store.initializedPromise.then(function() {
|
|
PDFViewerApplication.store.setMultiple({
|
|
'exists': true,
|
|
'page': location.pageNumber,
|
|
'zoom': location.scale,
|
|
'scrollLeft': location.left,
|
|
'scrollTop': location.top
|
|
}).catch(function() {
|
|
// unable to write to storage
|
|
});
|
|
});
|
|
var href =
|
|
PDFViewerApplication.pdfLinkService.getAnchorUrl(location.pdfOpenParams);
|
|
document.getElementById('viewBookmark').href = href;
|
|
document.getElementById('secondaryViewBookmark').href = href;
|
|
|
|
// Update the current bookmark in the browsing history.
|
|
PDFViewerApplication.pdfHistory.updateCurrentBookmark(location.pdfOpenParams,
|
|
location.pageNumber);
|
|
|
|
// Show/hide the loading indicator in the page number input element.
|
|
var pageNumberInput = document.getElementById('pageNumber');
|
|
var currentPage =
|
|
PDFViewerApplication.pdfViewer.getPageView(PDFViewerApplication.page - 1);
|
|
|
|
if (currentPage.renderingState === RenderingStates.FINISHED) {
|
|
pageNumberInput.classList.remove(PAGE_NUMBER_LOADING_INDICATOR);
|
|
} else {
|
|
pageNumberInput.classList.add(PAGE_NUMBER_LOADING_INDICATOR);
|
|
}
|
|
}, true);
|
|
|
|
window.addEventListener('resize', function webViewerResize(evt) {
|
|
if (PDFViewerApplication.initialized) {
|
|
var currentScaleValue = PDFViewerApplication.pdfViewer.currentScaleValue;
|
|
if (currentScaleValue === 'auto' ||
|
|
currentScaleValue === 'page-fit' ||
|
|
currentScaleValue === 'page-width') {
|
|
// Note: the scale is constant for 'page-actual'.
|
|
PDFViewerApplication.pdfViewer.currentScaleValue = currentScaleValue;
|
|
} else if (!currentScaleValue) {
|
|
// Normally this shouldn't happen, but if the scale wasn't initialized
|
|
// we set it to the default value in order to prevent any issues.
|
|
// (E.g. the document being rendered with the wrong scale on load.)
|
|
PDFViewerApplication.pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
|
|
}
|
|
PDFViewerApplication.pdfViewer.update();
|
|
}
|
|
|
|
// Set the 'max-height' CSS property of the secondary toolbar.
|
|
SecondaryToolbar.setMaxHeight(document.getElementById('viewerContainer'));
|
|
});
|
|
|
|
window.addEventListener('hashchange', function webViewerHashchange(evt) {
|
|
if (PDFViewerApplication.pdfHistory.isHashChangeUnlocked) {
|
|
var hash = document.location.hash.substring(1);
|
|
if (!hash) {
|
|
return;
|
|
}
|
|
if (!PDFViewerApplication.isInitialViewSet) {
|
|
PDFViewerApplication.initialBookmark = hash;
|
|
} else {
|
|
PDFViewerApplication.pdfLinkService.setHash(hash);
|
|
}
|
|
}
|
|
});
|
|
|
|
window.addEventListener('change', function webViewerChange(evt) {
|
|
var files = evt.target.files;
|
|
if (!files || files.length === 0) {
|
|
return;
|
|
}
|
|
var file = files[0];
|
|
|
|
if (!PDFJS.disableCreateObjectURL &&
|
|
typeof URL !== 'undefined' && URL.createObjectURL) {
|
|
PDFViewerApplication.open(URL.createObjectURL(file));
|
|
} else {
|
|
// Read the local file into a Uint8Array.
|
|
var fileReader = new FileReader();
|
|
fileReader.onload = function webViewerChangeFileReaderOnload(evt) {
|
|
var buffer = evt.target.result;
|
|
var uint8Array = new Uint8Array(buffer);
|
|
PDFViewerApplication.open(uint8Array);
|
|
};
|
|
fileReader.readAsArrayBuffer(file);
|
|
}
|
|
|
|
PDFViewerApplication.setTitleUsingUrl(file.name);
|
|
|
|
// URL does not reflect proper document location - hiding some icons.
|
|
document.getElementById('viewBookmark').setAttribute('hidden', 'true');
|
|
document.getElementById('secondaryViewBookmark').
|
|
setAttribute('hidden', 'true');
|
|
document.getElementById('download').setAttribute('hidden', 'true');
|
|
document.getElementById('secondaryDownload').setAttribute('hidden', 'true');
|
|
}, true);
|
|
|
|
function selectScaleOption(value) {
|
|
var options = document.getElementById('scaleSelect').options;
|
|
var predefinedValueFound = false;
|
|
for (var i = 0, ii = options.length; i < ii; i++) {
|
|
var option = options[i];
|
|
if (option.value !== value) {
|
|
option.selected = false;
|
|
continue;
|
|
}
|
|
option.selected = true;
|
|
predefinedValueFound = true;
|
|
}
|
|
return predefinedValueFound;
|
|
}
|
|
|
|
window.addEventListener('localized', function localized(evt) {
|
|
// document.getElementsByTagName('html')[0].dir = mozL10n.getDirection();
|
|
|
|
PDFViewerApplication.animationStartedPromise.then(function() {
|
|
// Adjust the width of the zoom box to fit the content.
|
|
// Note: If the window is narrow enough that the zoom box is not visible,
|
|
// we temporarily show it to be able to adjust its width.
|
|
var container = document.getElementById('scaleSelectContainer');
|
|
if (container.clientWidth === 0) {
|
|
container.setAttribute('style', 'display: inherit;');
|
|
}
|
|
if (container.clientWidth > 0) {
|
|
var select = document.getElementById('scaleSelect');
|
|
select.setAttribute('style', 'min-width: inherit;');
|
|
var width = select.clientWidth + SCALE_SELECT_CONTAINER_PADDING;
|
|
select.setAttribute('style', 'min-width: ' +
|
|
(width + SCALE_SELECT_PADDING) + 'px;');
|
|
container.setAttribute('style', 'min-width: ' + width + 'px; ' +
|
|
'max-width: ' + width + 'px;');
|
|
}
|
|
|
|
// Set the 'max-height' CSS property of the secondary toolbar.
|
|
SecondaryToolbar.setMaxHeight(document.getElementById('viewerContainer'));
|
|
});
|
|
}, true);
|
|
|
|
window.addEventListener('scalechange', function scalechange(evt) {
|
|
document.getElementById('zoomOut').disabled = (evt.scale === MIN_SCALE);
|
|
document.getElementById('zoomIn').disabled = (evt.scale === MAX_SCALE);
|
|
|
|
// Update the 'scaleSelect' DOM element.
|
|
var predefinedValueFound = selectScaleOption(evt.presetValue ||
|
|
'' + evt.scale);
|
|
if (!predefinedValueFound) {
|
|
var customScaleOption = document.getElementById('customScaleOption');
|
|
var customScale = Math.round(evt.scale * 10000) / 100;
|
|
customScaleOption.textContent = customScale + '%';
|
|
customScaleOption.selected = true;
|
|
}
|
|
if (!PDFViewerApplication.initialized) {
|
|
return;
|
|
}
|
|
PDFViewerApplication.pdfViewer.update();
|
|
}, true);
|
|
|
|
window.addEventListener('pagechange', function pagechange(evt) {
|
|
var page = evt.pageNumber;
|
|
if (evt.previousPageNumber !== page) {
|
|
document.getElementById('pageNumber').value = page;
|
|
if (PDFViewerApplication.sidebarOpen) {
|
|
PDFViewerApplication.pdfThumbnailViewer.scrollThumbnailIntoView(page);
|
|
}
|
|
}
|
|
var numPages = PDFViewerApplication.pagesCount;
|
|
|
|
document.getElementById('previous').disabled = (page <= 1);
|
|
document.getElementById('next').disabled = (page >= numPages);
|
|
|
|
document.getElementById('firstPage').disabled = (page <= 1);
|
|
document.getElementById('lastPage').disabled = (page >= numPages);
|
|
|
|
// we need to update stats
|
|
if (PDFJS.pdfBug && Stats.enabled) {
|
|
var pageView = PDFViewerApplication.pdfViewer.getPageView(page - 1);
|
|
if (pageView.stats) {
|
|
Stats.add(page, pageView.stats);
|
|
}
|
|
}
|
|
}, true);
|
|
|
|
function handleMouseWheel(evt) {
|
|
var MOUSE_WHEEL_DELTA_FACTOR = 40;
|
|
var ticks = (evt.type === 'DOMMouseScroll') ? -evt.detail :
|
|
evt.wheelDelta / MOUSE_WHEEL_DELTA_FACTOR;
|
|
var direction = (ticks < 0) ? 'zoomOut' : 'zoomIn';
|
|
|
|
var pdfViewer = PDFViewerApplication.pdfViewer;
|
|
if (pdfViewer.isInPresentationMode) {
|
|
evt.preventDefault();
|
|
PDFViewerApplication.scrollPresentationMode(ticks *
|
|
MOUSE_WHEEL_DELTA_FACTOR);
|
|
} else if (evt.ctrlKey || evt.metaKey) {
|
|
var support = PDFViewerApplication.supportedMouseWheelZoomModifierKeys;
|
|
if ((evt.ctrlKey && !support.ctrlKey) ||
|
|
(evt.metaKey && !support.metaKey)) {
|
|
return;
|
|
}
|
|
// Only zoom the pages, not the entire viewer.
|
|
evt.preventDefault();
|
|
|
|
var previousScale = pdfViewer.currentScale;
|
|
|
|
PDFViewerApplication[direction](Math.abs(ticks));
|
|
|
|
var currentScale = pdfViewer.currentScale;
|
|
if (previousScale !== currentScale) {
|
|
// After scaling the page via zoomIn/zoomOut, the position of the upper-
|
|
// left corner is restored. When the mouse wheel is used, the position
|
|
// under the cursor should be restored instead.
|
|
var scaleCorrectionFactor = currentScale / previousScale - 1;
|
|
var rect = pdfViewer.container.getBoundingClientRect();
|
|
var dx = evt.clientX - rect.left;
|
|
var dy = evt.clientY - rect.top;
|
|
pdfViewer.container.scrollLeft += dx * scaleCorrectionFactor;
|
|
pdfViewer.container.scrollTop += dy * scaleCorrectionFactor;
|
|
}
|
|
}
|
|
}
|
|
|
|
window.addEventListener('DOMMouseScroll', handleMouseWheel);
|
|
window.addEventListener('mousewheel', handleMouseWheel);
|
|
|
|
window.addEventListener('click', function click(evt) {
|
|
if (SecondaryToolbar.opened &&
|
|
PDFViewerApplication.pdfViewer.containsElement(evt.target)) {
|
|
SecondaryToolbar.close();
|
|
}
|
|
}, false);
|
|
|
|
window.addEventListener('keydown', function keydown(evt) {
|
|
if (OverlayManager.active) {
|
|
return;
|
|
}
|
|
|
|
var handled = false;
|
|
var cmd = (evt.ctrlKey ? 1 : 0) |
|
|
(evt.altKey ? 2 : 0) |
|
|
(evt.shiftKey ? 4 : 0) |
|
|
(evt.metaKey ? 8 : 0);
|
|
|
|
var pdfViewer = PDFViewerApplication.pdfViewer;
|
|
var isViewerInPresentationMode = pdfViewer && pdfViewer.isInPresentationMode;
|
|
|
|
// First, handle the key bindings that are independent whether an input
|
|
// control is selected or not.
|
|
if (cmd === 1 || cmd === 8 || cmd === 5 || cmd === 12) {
|
|
// either CTRL or META key with optional SHIFT.
|
|
switch (evt.keyCode) {
|
|
case 70: // f
|
|
if (!PDFViewerApplication.supportsIntegratedFind) {
|
|
PDFViewerApplication.findBar.open();
|
|
handled = true;
|
|
}
|
|
break;
|
|
case 71: // g
|
|
if (!PDFViewerApplication.supportsIntegratedFind) {
|
|
PDFViewerApplication.findBar.dispatchEvent('again',
|
|
cmd === 5 || cmd === 12);
|
|
handled = true;
|
|
}
|
|
break;
|
|
case 61: // FF/Mac '='
|
|
case 107: // FF '+' and '='
|
|
case 187: // Chrome '+'
|
|
case 171: // FF with German keyboard
|
|
if (!isViewerInPresentationMode) {
|
|
PDFViewerApplication.zoomIn();
|
|
}
|
|
handled = true;
|
|
break;
|
|
case 173: // FF/Mac '-'
|
|
case 109: // FF '-'
|
|
case 189: // Chrome '-'
|
|
if (!isViewerInPresentationMode) {
|
|
PDFViewerApplication.zoomOut();
|
|
}
|
|
handled = true;
|
|
break;
|
|
case 48: // '0'
|
|
case 96: // '0' on Numpad of Swedish keyboard
|
|
if (!isViewerInPresentationMode) {
|
|
// keeping it unhandled (to restore page zoom to 100%)
|
|
setTimeout(function () {
|
|
// ... and resetting the scale after browser adjusts its scale
|
|
pdfViewer.currentScaleValue = DEFAULT_SCALE_VALUE;
|
|
});
|
|
handled = false;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// CTRL or META without shift
|
|
if (cmd === 1 || cmd === 8) {
|
|
switch (evt.keyCode) {
|
|
case 83: // s
|
|
PDFViewerApplication.download();
|
|
handled = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// CTRL+ALT or Option+Command
|
|
if (cmd === 3 || cmd === 10) {
|
|
switch (evt.keyCode) {
|
|
case 80: // p
|
|
PDFViewerApplication.requestPresentationMode();
|
|
handled = true;
|
|
break;
|
|
case 71: // g
|
|
// focuses input#pageNumber field
|
|
document.getElementById('pageNumber').select();
|
|
handled = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (handled) {
|
|
evt.preventDefault();
|
|
return;
|
|
}
|
|
|
|
// Some shortcuts should not get handled if a control/input element
|
|
// is selected.
|
|
var curElement = document.activeElement || document.querySelector(':focus');
|
|
var curElementTagName = curElement && curElement.tagName.toUpperCase();
|
|
if (curElementTagName === 'INPUT' ||
|
|
curElementTagName === 'TEXTAREA' ||
|
|
curElementTagName === 'SELECT') {
|
|
// Make sure that the secondary toolbar is closed when Escape is pressed.
|
|
if (evt.keyCode !== 27) { // 'Esc'
|
|
return;
|
|
}
|
|
}
|
|
var ensureViewerFocused = false;
|
|
|
|
if (cmd === 0) { // no control key pressed at all.
|
|
switch (evt.keyCode) {
|
|
case 38: // up arrow
|
|
case 33: // pg up
|
|
case 8: // backspace
|
|
if (!isViewerInPresentationMode &&
|
|
pdfViewer.currentScaleValue !== 'page-fit') {
|
|
break;
|
|
}
|
|
/* in presentation mode */
|
|
/* falls through */
|
|
case 37: // left arrow
|
|
// horizontal scrolling using arrow keys
|
|
if (pdfViewer.isHorizontalScrollbarEnabled) {
|
|
break;
|
|
}
|
|
/* falls through */
|
|
case 75: // 'k'
|
|
case 80: // 'p'
|
|
PDFViewerApplication.page--;
|
|
handled = true;
|
|
break;
|
|
case 27: // esc key
|
|
if (SecondaryToolbar.opened) {
|
|
SecondaryToolbar.close();
|
|
handled = true;
|
|
}
|
|
if (!PDFViewerApplication.supportsIntegratedFind &&
|
|
PDFViewerApplication.findBar.opened) {
|
|
PDFViewerApplication.findBar.close();
|
|
handled = true;
|
|
}
|
|
break;
|
|
case 40: // down arrow
|
|
case 34: // pg down
|
|
case 32: // spacebar
|
|
if (!isViewerInPresentationMode &&
|
|
pdfViewer.currentScaleValue !== 'page-fit') {
|
|
break;
|
|
}
|
|
/* falls through */
|
|
case 39: // right arrow
|
|
// horizontal scrolling using arrow keys
|
|
if (pdfViewer.isHorizontalScrollbarEnabled) {
|
|
break;
|
|
}
|
|
/* falls through */
|
|
case 74: // 'j'
|
|
case 78: // 'n'
|
|
PDFViewerApplication.page++;
|
|
handled = true;
|
|
break;
|
|
|
|
case 36: // home
|
|
if (isViewerInPresentationMode || PDFViewerApplication.page > 1) {
|
|
PDFViewerApplication.page = 1;
|
|
handled = true;
|
|
ensureViewerFocused = true;
|
|
}
|
|
break;
|
|
case 35: // end
|
|
if (isViewerInPresentationMode || (PDFViewerApplication.pdfDocument &&
|
|
PDFViewerApplication.page < PDFViewerApplication.pagesCount)) {
|
|
PDFViewerApplication.page = PDFViewerApplication.pagesCount;
|
|
handled = true;
|
|
ensureViewerFocused = true;
|
|
}
|
|
break;
|
|
|
|
case 72: // 'h'
|
|
if (!isViewerInPresentationMode) {
|
|
HandTool.toggle();
|
|
}
|
|
break;
|
|
case 82: // 'r'
|
|
PDFViewerApplication.rotatePages(90);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (cmd === 4) { // shift-key
|
|
switch (evt.keyCode) {
|
|
case 32: // spacebar
|
|
if (!isViewerInPresentationMode &&
|
|
pdfViewer.currentScaleValue !== 'page-fit') {
|
|
break;
|
|
}
|
|
PDFViewerApplication.page--;
|
|
handled = true;
|
|
break;
|
|
|
|
case 82: // 'r'
|
|
PDFViewerApplication.rotatePages(-90);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!handled && !isViewerInPresentationMode) {
|
|
// 33=Page Up 34=Page Down 35=End 36=Home
|
|
// 37=Left 38=Up 39=Right 40=Down
|
|
// 32=Spacebar
|
|
if ((evt.keyCode >= 33 && evt.keyCode <= 40) ||
|
|
(evt.keyCode === 32 && curElementTagName !== 'BUTTON')) {
|
|
ensureViewerFocused = true;
|
|
}
|
|
}
|
|
|
|
if (cmd === 2) { // alt-key
|
|
switch (evt.keyCode) {
|
|
case 37: // left arrow
|
|
if (isViewerInPresentationMode) {
|
|
PDFViewerApplication.pdfHistory.back();
|
|
handled = true;
|
|
}
|
|
break;
|
|
case 39: // right arrow
|
|
if (isViewerInPresentationMode) {
|
|
PDFViewerApplication.pdfHistory.forward();
|
|
handled = true;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ensureViewerFocused && !pdfViewer.containsElement(curElement)) {
|
|
// The page container is not focused, but a page navigation key has been
|
|
// pressed. Change the focus to the viewer container to make sure that
|
|
// navigation by keyboard works as expected.
|
|
pdfViewer.focus();
|
|
}
|
|
|
|
if (handled) {
|
|
evt.preventDefault();
|
|
}
|
|
});
|
|
|
|
window.addEventListener('beforeprint', function beforePrint(evt) {
|
|
PDFViewerApplication.beforePrint();
|
|
});
|
|
|
|
window.addEventListener('afterprint', function afterPrint(evt) {
|
|
PDFViewerApplication.afterPrint();
|
|
});
|
|
|
|
(function animationStartedClosure() {
|
|
// The offsetParent is not set until the pdf.js iframe or object is visible.
|
|
// Waiting for first animation.
|
|
PDFViewerApplication.animationStartedPromise = new Promise(
|
|
function (resolve) {
|
|
window.requestAnimationFrame(resolve);
|
|
});
|
|
})();
|
|
|
|
|