forked from 0x2620/pandora
3393 lines
102 KiB
JavaScript
3393 lines
102 KiB
JavaScript
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
|
|
/* Copyright 2012 Mozilla Foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
/* globals PDFJS, PDFBug, FirefoxCom, Stats */
|
|
|
|
'use strict';
|
|
|
|
var DEFAULT_SCALE = 'auto';
|
|
var DEFAULT_SCALE_DELTA = 1.1;
|
|
var UNKNOWN_SCALE = 0;
|
|
var CACHE_SIZE = 20;
|
|
var CSS_UNITS = 96.0 / 72.0;
|
|
var SCROLLBAR_PADDING = 40;
|
|
var VERTICAL_PADDING = 5;
|
|
var MIN_SCALE = 0.25;
|
|
var MAX_SCALE = 4.0;
|
|
var IMAGE_DIR = '/static/pdf.js/images/';
|
|
var SETTINGS_MEMORY = 20;
|
|
var ANNOT_MIN_SIZE = 10;
|
|
var RenderingStates = {
|
|
INITIAL: 0,
|
|
RUNNING: 1,
|
|
PAUSED: 2,
|
|
FINISHED: 3
|
|
};
|
|
var FindStates = {
|
|
FIND_FOUND: 0,
|
|
FIND_NOTFOUND: 1,
|
|
FIND_WRAPPED: 2,
|
|
FIND_PENDING: 3
|
|
};
|
|
|
|
PDFJS.workerSrc = '/static/pdf.js/pdf.js';
|
|
|
|
var mozL10n = document.mozL10n || document.webL10n;
|
|
|
|
function getFileName(url) {
|
|
var anchor = url.indexOf('#');
|
|
var query = url.indexOf('?');
|
|
var end = Math.min(
|
|
anchor > 0 ? anchor : url.length,
|
|
query > 0 ? query : url.length);
|
|
return url.substring(url.lastIndexOf('/', end) + 1, end);
|
|
}
|
|
|
|
function scrollIntoView(element, spot) {
|
|
// Assuming offsetParent is available (it's not available when viewer is in
|
|
// hidden iframe or object). We have to scroll: if the offsetParent is not set
|
|
// producing the error. See also animationStartedClosure.
|
|
var parent = element.offsetParent, offsetY = element.offsetTop;
|
|
if (!parent) {
|
|
console.error('offsetParent is not set -- cannot scroll');
|
|
return;
|
|
}
|
|
while (parent.clientHeight == parent.scrollHeight) {
|
|
offsetY += parent.offsetTop;
|
|
parent = parent.offsetParent;
|
|
if (!parent)
|
|
return; // no need to scroll
|
|
}
|
|
if (spot)
|
|
offsetY += spot.top;
|
|
parent.scrollTop = offsetY;
|
|
}
|
|
|
|
var Cache = function cacheCache(size) {
|
|
var data = [];
|
|
this.push = function cachePush(view) {
|
|
var i = data.indexOf(view);
|
|
if (i >= 0)
|
|
data.splice(i);
|
|
data.push(view);
|
|
if (data.length > size)
|
|
data.shift().destroy();
|
|
};
|
|
};
|
|
|
|
var ProgressBar = (function ProgressBarClosure() {
|
|
|
|
function clamp(v, min, max) {
|
|
return Math.min(Math.max(v, min), max);
|
|
}
|
|
|
|
function ProgressBar(id, opts) {
|
|
|
|
// Fetch the sub-elements for later
|
|
this.div = document.querySelector(id + ' .progress');
|
|
|
|
// Get options, with sensible defaults
|
|
this.height = opts.height || 100;
|
|
this.width = opts.width || 100;
|
|
this.units = opts.units || '%';
|
|
|
|
// Initialize heights
|
|
this.div.style.height = this.height + this.units;
|
|
}
|
|
|
|
ProgressBar.prototype = {
|
|
|
|
updateBar: function ProgressBar_updateBar() {
|
|
if (this._indeterminate) {
|
|
this.div.classList.add('indeterminate');
|
|
return;
|
|
}
|
|
|
|
var progressSize = this.width * this._percent / 100;
|
|
|
|
if (this._percent > 95)
|
|
this.div.classList.add('full');
|
|
else
|
|
this.div.classList.remove('full');
|
|
this.div.classList.remove('indeterminate');
|
|
|
|
this.div.style.width = progressSize + this.units;
|
|
},
|
|
|
|
get percent() {
|
|
return this._percent;
|
|
},
|
|
|
|
set percent(val) {
|
|
this._indeterminate = isNaN(val);
|
|
this._percent = clamp(val, 0, 100);
|
|
this.updateBar();
|
|
}
|
|
};
|
|
|
|
return ProgressBar;
|
|
})();
|
|
|
|
|
|
// Settings Manager - This is a utility for saving settings
|
|
// First we see if localStorage is available
|
|
// If not, we use FUEL in FF
|
|
// Use asyncStorage for B2G
|
|
var Settings = (function SettingsClosure() {
|
|
var isLocalStorageEnabled = (function localStorageEnabledTest() {
|
|
// Feature test as per http://diveintohtml5.info/storage.html
|
|
// The additional localStorage call is to get around a FF quirk, see
|
|
// bug #495747 in bugzilla
|
|
try {
|
|
return 'localStorage' in window && window['localStorage'] !== null &&
|
|
localStorage;
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
})();
|
|
|
|
function Settings(fingerprint) {
|
|
this.fingerprint = fingerprint;
|
|
this.initializedPromise = new PDFJS.Promise();
|
|
|
|
var resolvePromise = (function settingsResolvePromise(db) {
|
|
this.initialize(db || '{}');
|
|
this.initializedPromise.resolve();
|
|
}).bind(this);
|
|
|
|
|
|
|
|
if (isLocalStorageEnabled)
|
|
resolvePromise(localStorage.getItem('database'));
|
|
}
|
|
|
|
Settings.prototype = {
|
|
initialize: function settingsInitialize(database) {
|
|
database = JSON.parse(database);
|
|
if (!('files' in database))
|
|
database.files = [];
|
|
if (database.files.length >= SETTINGS_MEMORY)
|
|
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;
|
|
},
|
|
|
|
set: function settingsSet(name, val) {
|
|
if (!this.initializedPromise.isResolved)
|
|
return;
|
|
|
|
var file = this.file;
|
|
file[name] = val;
|
|
var database = JSON.stringify(this.database);
|
|
if (isLocalStorageEnabled)
|
|
localStorage.setItem('database', database);
|
|
},
|
|
|
|
get: function settingsGet(name, defaultValue) {
|
|
if (!this.initializedPromise.isResolved)
|
|
return defaultValue;
|
|
|
|
return this.file[name] || defaultValue;
|
|
}
|
|
};
|
|
|
|
return Settings;
|
|
})();
|
|
|
|
var cache = new Cache(CACHE_SIZE);
|
|
var currentPageNumber = 1;
|
|
|
|
var PDFFindController = {
|
|
startedTextExtraction: false,
|
|
|
|
extractTextPromises: [],
|
|
|
|
// If active, find results will be highlighted.
|
|
active: false,
|
|
|
|
// Stores the text for each page.
|
|
pageContents: [],
|
|
|
|
pageMatches: [],
|
|
|
|
// Currently selected match.
|
|
selected: {
|
|
pageIdx: -1,
|
|
matchIdx: -1
|
|
},
|
|
|
|
// Where find algorithm currently is in the document.
|
|
offset: {
|
|
pageIdx: null,
|
|
matchIdx: null
|
|
},
|
|
|
|
resumePageIdx: null,
|
|
|
|
resumeCallback: null,
|
|
|
|
state: null,
|
|
|
|
dirtyMatch: false,
|
|
|
|
findTimeout: null,
|
|
|
|
initialize: function() {
|
|
var events = [
|
|
'find',
|
|
'findagain',
|
|
'findhighlightallchange',
|
|
'findcasesensitivitychange'
|
|
];
|
|
|
|
this.handleEvent = this.handleEvent.bind(this);
|
|
|
|
for (var i = 0; i < events.length; i++) {
|
|
window.addEventListener(events[i], this.handleEvent);
|
|
}
|
|
},
|
|
|
|
calcFindMatch: function(pageIndex) {
|
|
var pageContent = this.pageContents[pageIndex];
|
|
var query = 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) {
|
|
var callback = this.resumeCallback;
|
|
this.resumePageIdx = null;
|
|
this.resumeCallback = null;
|
|
callback();
|
|
}
|
|
},
|
|
|
|
extractText: function() {
|
|
if (this.startedTextExtraction) {
|
|
return;
|
|
}
|
|
this.startedTextExtraction = true;
|
|
|
|
this.pageContents = [];
|
|
for (var i = 0, ii = PDFView.pdfDocument.numPages; i < ii; i++) {
|
|
this.extractTextPromises.push(new PDFJS.Promise());
|
|
}
|
|
|
|
var self = this;
|
|
function extractPageText(pageIndex) {
|
|
PDFView.pages[pageIndex].getTextContent().then(
|
|
function textContentResolved(data) {
|
|
// Build the find string.
|
|
var bidiTexts = data.bidiTexts;
|
|
var str = '';
|
|
|
|
for (var i = 0; i < bidiTexts.length; i++) {
|
|
str += bidiTexts[i].str;
|
|
}
|
|
|
|
// Store the pageContent as a string.
|
|
self.pageContents.push(str);
|
|
|
|
self.extractTextPromises[pageIndex].resolve(pageIndex);
|
|
if ((pageIndex + 1) < PDFView.pages.length)
|
|
extractPageText(pageIndex + 1);
|
|
}
|
|
);
|
|
}
|
|
extractPageText(0);
|
|
return this.extractTextPromise;
|
|
},
|
|
|
|
handleEvent: function(e) {
|
|
if (this.state === null || e.type !== 'findagain') {
|
|
this.dirtyMatch = true;
|
|
}
|
|
this.state = e.detail;
|
|
this.updateUIState(FindStates.FIND_PENDING);
|
|
|
|
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();
|
|
}
|
|
},
|
|
|
|
updatePage: function(idx) {
|
|
var page = PDFView.pages[idx];
|
|
|
|
if (this.selected.pageIdx === idx) {
|
|
// 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.
|
|
page.scrollIntoView();
|
|
}
|
|
|
|
if (page.textLayer) {
|
|
page.textLayer.updateMatches();
|
|
}
|
|
},
|
|
|
|
nextMatch: function() {
|
|
var pages = PDFView.pages;
|
|
var previous = this.state.findPrevious;
|
|
var numPages = PDFView.pages.length;
|
|
|
|
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 = previous ? numPages - 1 : 0;
|
|
this.offset.matchIdx = null;
|
|
this.hadMatch = false;
|
|
this.resumeCallback = null;
|
|
this.resumePageIdx = null;
|
|
this.pageMatches = [];
|
|
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.
|
|
this.extractTextPromises[i].onData(function(pageIdx) {
|
|
// Use a timeout since all the pages may already be extracted and we
|
|
// want to start highlighting before finding all the matches.
|
|
setTimeout(function() {
|
|
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.resumeCallback) {
|
|
return;
|
|
}
|
|
|
|
var offset = this.offset;
|
|
// 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();
|
|
},
|
|
|
|
nextPageMatch: function() {
|
|
if (this.resumePageIdx !== null)
|
|
console.error('There can only be one pending page.');
|
|
|
|
var matchesReady = function(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);
|
|
} else {
|
|
// No matches attempt to search the next page.
|
|
this.advanceOffsetPage(previous);
|
|
if (offset.wrapped) {
|
|
offset.matchIdx = null;
|
|
if (!this.hadMatch) {
|
|
// No point in wrapping there were no matches.
|
|
this.updateMatch(false);
|
|
return;
|
|
}
|
|
}
|
|
// Search the next page.
|
|
this.nextPageMatch();
|
|
}
|
|
}.bind(this);
|
|
|
|
var pageIdx = this.offset.pageIdx;
|
|
var pageMatches = this.pageMatches;
|
|
if (!pageMatches[pageIdx]) {
|
|
// The matches aren't ready setup a callback so we can be notified,
|
|
// when they are ready.
|
|
this.resumeCallback = function() {
|
|
matchesReady(pageMatches[pageIdx]);
|
|
};
|
|
this.resumePageIdx = pageIdx;
|
|
return;
|
|
}
|
|
// The matches are finished already.
|
|
matchesReady(pageMatches[pageIdx]);
|
|
},
|
|
|
|
advanceOffsetPage: function(previous) {
|
|
var offset = this.offset;
|
|
var numPages = this.extractTextPromises.length;
|
|
offset.pageIdx = previous ? offset.pageIdx - 1 : offset.pageIdx + 1;
|
|
offset.matchIdx = null;
|
|
if (offset.pageIdx >= numPages || offset.pageIdx < 0) {
|
|
offset.pageIdx = previous ? numPages - 1 : 0;
|
|
offset.wrapped = true;
|
|
return;
|
|
}
|
|
},
|
|
|
|
updateMatch: function(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, true);
|
|
}
|
|
},
|
|
|
|
updateUIState: function(state, previous) {
|
|
if (PDFView.supportsIntegratedFind) {
|
|
FirefoxCom.request('updateFindControlState',
|
|
{result: state, findPrevious: previous});
|
|
return;
|
|
}
|
|
PDFFindBar.updateUIState(state, previous);
|
|
}
|
|
};
|
|
|
|
var PDFFindBar = {
|
|
// TODO: Enable the FindBar *AFTER* the pagesPromise in the load function
|
|
// got resolved
|
|
|
|
opened: false,
|
|
|
|
initialize: function() {
|
|
this.bar = document.getElementById('findbar');
|
|
this.toggleButton = document.getElementById('viewFind');
|
|
this.findField = document.getElementById('findInput');
|
|
this.highlightAll = document.getElementById('findHighlightAll');
|
|
this.caseSensitive = document.getElementById('findMatchCase');
|
|
this.findMsg = document.getElementById('findMsg');
|
|
this.findStatusIcon = document.getElementById('findStatusIcon');
|
|
|
|
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;
|
|
}
|
|
});
|
|
|
|
document.getElementById('findPrevious').addEventListener('click',
|
|
function() { self.dispatchEvent('again', true); }
|
|
);
|
|
|
|
document.getElementById('findNext').addEventListener('click', function() {
|
|
self.dispatchEvent('again', false);
|
|
});
|
|
|
|
this.highlightAll.addEventListener('click', function() {
|
|
self.dispatchEvent('highlightallchange');
|
|
});
|
|
|
|
this.caseSensitive.addEventListener('click', function() {
|
|
self.dispatchEvent('casesensitivitychange');
|
|
});
|
|
},
|
|
|
|
dispatchEvent: function(aType, aFindPrevious) {
|
|
var event = document.createEvent('CustomEvent');
|
|
event.initCustomEvent('find' + aType, true, true, {
|
|
query: this.findField.value,
|
|
caseSensitive: this.caseSensitive.checked,
|
|
highlightAll: this.highlightAll.checked,
|
|
findPrevious: aFindPrevious
|
|
});
|
|
return window.dispatchEvent(event);
|
|
},
|
|
|
|
updateUIState: function(state, previous) {
|
|
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 = mozL10n.get('find_not_found', null, 'Phrase not found');
|
|
notFound = true;
|
|
break;
|
|
|
|
case FindStates.FIND_WRAPPED:
|
|
if (previous) {
|
|
findMsg = mozL10n.get('find_reached_top', null,
|
|
'Reached top of document, continued from bottom');
|
|
} else {
|
|
findMsg = mozL10n.get('find_reached_bottom', null,
|
|
'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;
|
|
},
|
|
|
|
open: function() {
|
|
if (this.opened) return;
|
|
|
|
this.opened = true;
|
|
this.toggleButton.classList.add('toggled');
|
|
this.bar.classList.remove('hidden');
|
|
this.findField.select();
|
|
this.findField.focus();
|
|
},
|
|
|
|
close: function() {
|
|
if (!this.opened) return;
|
|
|
|
this.opened = false;
|
|
this.toggleButton.classList.remove('toggled');
|
|
this.bar.classList.add('hidden');
|
|
|
|
PDFFindController.active = false;
|
|
},
|
|
|
|
toggle: function() {
|
|
if (this.opened) {
|
|
this.close();
|
|
} else {
|
|
this.open();
|
|
}
|
|
}
|
|
};
|
|
|
|
var PDFView = {
|
|
pages: [],
|
|
thumbnails: [],
|
|
currentScale: UNKNOWN_SCALE,
|
|
currentScaleValue: null,
|
|
initialBookmark: document.location.hash.substring(1),
|
|
startedTextExtraction: false,
|
|
pageText: [],
|
|
container: null,
|
|
thumbnailContainer: null,
|
|
initialized: false,
|
|
fellback: false,
|
|
pdfDocument: null,
|
|
sidebarOpen: false,
|
|
pageViewScroll: null,
|
|
thumbnailViewScroll: null,
|
|
isFullscreen: false,
|
|
previousScale: null,
|
|
pageRotation: 0,
|
|
mouseScrollTimeStamp: 0,
|
|
mouseScrollDelta: 0,
|
|
lastScroll: 0,
|
|
previousPageNumber: 1,
|
|
|
|
// called once when the document is loaded
|
|
initialize: function pdfViewInitialize() {
|
|
var self = this;
|
|
var container = this.container = document.getElementById('viewerContainer');
|
|
this.pageViewScroll = {};
|
|
this.watchScroll(container, this.pageViewScroll, updateViewarea);
|
|
|
|
var thumbnailContainer = this.thumbnailContainer =
|
|
document.getElementById('thumbnailView');
|
|
this.thumbnailViewScroll = {};
|
|
this.watchScroll(thumbnailContainer, this.thumbnailViewScroll,
|
|
this.renderHighestPriority.bind(this));
|
|
|
|
PDFFindBar.initialize();
|
|
PDFFindController.initialize();
|
|
|
|
this.initialized = true;
|
|
container.addEventListener('scroll', function() {
|
|
self.lastScroll = Date.now();
|
|
}, false);
|
|
},
|
|
|
|
// Helper function to keep track whether a div was scrolled up or down and
|
|
// then call a callback.
|
|
watchScroll: function pdfViewWatchScroll(viewAreaElement, state, callback) {
|
|
state.down = true;
|
|
state.lastY = viewAreaElement.scrollTop;
|
|
viewAreaElement.addEventListener('scroll', function webViewerScroll(evt) {
|
|
var currentY = viewAreaElement.scrollTop;
|
|
var lastY = state.lastY;
|
|
if (currentY > lastY)
|
|
state.down = true;
|
|
else if (currentY < lastY)
|
|
state.down = false;
|
|
// else do nothing and use previous value
|
|
state.lastY = currentY;
|
|
callback();
|
|
}, true);
|
|
},
|
|
|
|
setScale: function pdfViewSetScale(val, resetAutoSettings, noScroll) {
|
|
if (val == this.currentScale)
|
|
return;
|
|
|
|
var pages = this.pages;
|
|
for (var i = 0; i < pages.length; i++)
|
|
pages[i].update(val * CSS_UNITS);
|
|
|
|
if (!noScroll && this.currentScale != val)
|
|
this.pages[this.page - 1].scrollIntoView();
|
|
this.currentScale = val;
|
|
|
|
var event = document.createEvent('UIEvents');
|
|
event.initUIEvent('scalechange', false, false, window, 0);
|
|
event.scale = val;
|
|
event.resetAutoSettings = resetAutoSettings;
|
|
window.dispatchEvent(event);
|
|
},
|
|
|
|
parseScale: function pdfViewParseScale(value, resetAutoSettings, noScroll) {
|
|
if ('custom' == value)
|
|
return;
|
|
|
|
var scale = parseFloat(value);
|
|
this.currentScaleValue = value;
|
|
if (scale) {
|
|
this.setScale(scale, true, noScroll);
|
|
return;
|
|
}
|
|
|
|
var container = this.container;
|
|
var currentPage = this.pages[this.page - 1];
|
|
if (!currentPage) {
|
|
return;
|
|
}
|
|
|
|
var pageWidthScale = (container.clientWidth - SCROLLBAR_PADDING) /
|
|
currentPage.width * currentPage.scale / CSS_UNITS;
|
|
var pageHeightScale = (container.clientHeight - VERTICAL_PADDING) /
|
|
currentPage.height * currentPage.scale / CSS_UNITS;
|
|
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':
|
|
scale = Math.min(1.0, pageWidthScale);
|
|
break;
|
|
}
|
|
this.setScale(scale, resetAutoSettings, noScroll);
|
|
|
|
selectScaleOption(value);
|
|
},
|
|
|
|
zoomIn: function pdfViewZoomIn() {
|
|
var newScale = (this.currentScale * DEFAULT_SCALE_DELTA).toFixed(2);
|
|
newScale = Math.min(MAX_SCALE, newScale);
|
|
this.parseScale(newScale, true);
|
|
},
|
|
|
|
zoomOut: function pdfViewZoomOut() {
|
|
var newScale = (this.currentScale / DEFAULT_SCALE_DELTA).toFixed(2);
|
|
newScale = Math.max(MIN_SCALE, newScale);
|
|
this.parseScale(newScale, true);
|
|
},
|
|
|
|
set page(val) {
|
|
var pages = this.pages;
|
|
var input = document.getElementById('pageNumber');
|
|
var event = document.createEvent('UIEvents');
|
|
event.initUIEvent('pagechange', false, false, window, 0);
|
|
|
|
if (!(0 < val && val <= pages.length)) {
|
|
this.previousPageNumber = val;
|
|
event.pageNumber = this.page;
|
|
window.dispatchEvent(event);
|
|
return;
|
|
}
|
|
|
|
pages[val - 1].updateStats();
|
|
this.previousPageNumber = currentPageNumber;
|
|
currentPageNumber = val;
|
|
event.pageNumber = val;
|
|
window.dispatchEvent(event);
|
|
|
|
// checking if the this.page was called from the updateViewarea function:
|
|
// avoiding the creation of two "set page" method (internal and public)
|
|
if (updateViewarea.inProgress)
|
|
return;
|
|
|
|
// Avoid scrolling the first page during loading
|
|
if (this.loading && val == 1)
|
|
return;
|
|
|
|
pages[val - 1].scrollIntoView();
|
|
},
|
|
|
|
get page() {
|
|
return currentPageNumber;
|
|
},
|
|
|
|
get supportsPrinting() {
|
|
var canvas = document.createElement('canvas');
|
|
var value = 'mozPrintCallback' in canvas;
|
|
// shadow
|
|
Object.defineProperty(this, 'supportsPrinting', { value: value,
|
|
enumerable: true,
|
|
configurable: true,
|
|
writable: false });
|
|
return value;
|
|
},
|
|
|
|
get supportsFullscreen() {
|
|
var doc = document.documentElement;
|
|
var support = doc.requestFullscreen || doc.mozRequestFullScreen ||
|
|
doc.webkitRequestFullScreen;
|
|
|
|
// Disable fullscreen button if we're in an iframe
|
|
if (!!window.frameElement)
|
|
support = false;
|
|
|
|
Object.defineProperty(this, 'supportsFullScreen', { value: support,
|
|
enumerable: true,
|
|
configurable: true,
|
|
writable: false });
|
|
return support;
|
|
},
|
|
|
|
get supportsIntegratedFind() {
|
|
var support = false;
|
|
Object.defineProperty(this, 'supportsIntegratedFind', { value: support,
|
|
enumerable: true,
|
|
configurable: true,
|
|
writable: false });
|
|
return support;
|
|
},
|
|
|
|
get supportsDocumentFonts() {
|
|
var support = true;
|
|
Object.defineProperty(this, 'supportsDocumentFonts', { value: support,
|
|
enumerable: true,
|
|
configurable: true,
|
|
writable: false });
|
|
return support;
|
|
},
|
|
|
|
get isHorizontalScrollbarEnabled() {
|
|
var div = document.getElementById('viewerContainer');
|
|
return div.scrollWidth > div.clientWidth;
|
|
},
|
|
|
|
initPassiveLoading: function pdfViewInitPassiveLoading() {
|
|
if (!PDFView.loadingBar) {
|
|
PDFView.loadingBar = new ProgressBar('#loadingBar', {});
|
|
}
|
|
|
|
function windowMessage(e) {
|
|
var args = e.data;
|
|
|
|
if (typeof args !== 'object' || !('pdfjsLoadAction' in args))
|
|
return;
|
|
switch (args.pdfjsLoadAction) {
|
|
case 'supportsChunkedLoading':
|
|
window.removeEventListener('message', windowMessage);
|
|
PDFView.open({
|
|
url: args.pdfUrl,
|
|
chunkedChromeLoading: true,
|
|
totalLength: args.totalLength,
|
|
loadedBegin: args.loadedBegin,
|
|
loadedChunk: args.loadedChunk
|
|
}, 0);
|
|
break;
|
|
case 'progress':
|
|
PDFView.progress(args.loaded / args.total);
|
|
break;
|
|
case 'complete':
|
|
// TODO(mack): remove the listener when file loading is complete
|
|
// window.removeEventListener('message', windowMessage);
|
|
if (!args.data) {
|
|
PDFView.error(mozL10n.get('loading_error', null,
|
|
'An error occurred while loading the PDF.'), e);
|
|
break;
|
|
}
|
|
PDFView.open(args.data, 0);
|
|
break;
|
|
}
|
|
}
|
|
window.addEventListener('message', windowMessage);
|
|
FirefoxCom.requestSync('initPassiveLoading', null);
|
|
},
|
|
|
|
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) {
|
|
document.title = title;
|
|
},
|
|
|
|
open: function pdfViewOpen(url, scale, password) {
|
|
var parameters = {password: password};
|
|
if (typeof url === 'string') { // URL
|
|
this.setTitleUsingUrl(url);
|
|
parameters.url = url;
|
|
} else if (url && 'byteLength' in url) { // ArrayBuffer
|
|
parameters.data = url;
|
|
} else {
|
|
this.setTitleUsingUrl(url.url);
|
|
parameters = url;
|
|
parameters.password = password;
|
|
}
|
|
|
|
if (!PDFView.loadingBar) {
|
|
PDFView.loadingBar = new ProgressBar('#loadingBar', {});
|
|
}
|
|
|
|
this.pdfDocument = null;
|
|
var self = this;
|
|
self.loading = true;
|
|
PDFJS.getDocument(parameters).then(
|
|
function getDocumentCallback(pdfDocument) {
|
|
self.load(pdfDocument, scale);
|
|
self.loading = false;
|
|
},
|
|
function getDocumentError(message, exception) {
|
|
if (exception && exception.name === 'PasswordException') {
|
|
if (exception.code === 'needpassword') {
|
|
var promptString = mozL10n.get('request_password', null,
|
|
'PDF is protected by a password:');
|
|
password = prompt(promptString);
|
|
if (password && password.length > 0) {
|
|
return PDFView.open(url, scale, password);
|
|
}
|
|
}
|
|
}
|
|
|
|
var loadingErrorMessage = mozL10n.get('loading_error', null,
|
|
'An error occurred while loading the PDF.');
|
|
|
|
if (exception && exception.name === 'InvalidPDFException') {
|
|
// change error message also for other builds
|
|
var loadingErrorMessage = mozL10n.get('invalid_file_error', null,
|
|
'Invalid or corrupted PDF file.');
|
|
}
|
|
|
|
if (exception && exception.name === 'MissingPDFException') {
|
|
// special message for missing PDF's
|
|
var loadingErrorMessage = mozL10n.get('missing_file_error', null,
|
|
'Missing PDF file.');
|
|
|
|
}
|
|
|
|
var loadingIndicator = document.getElementById('loading');
|
|
loadingIndicator.textContent = mozL10n.get('loading_error_indicator',
|
|
null, 'Error');
|
|
var moreInfo = {
|
|
message: message
|
|
};
|
|
self.error(loadingErrorMessage, moreInfo);
|
|
self.loading = false;
|
|
},
|
|
function getDocumentProgress(progressData) {
|
|
self.progress(progressData.loaded / progressData.total);
|
|
}
|
|
);
|
|
},
|
|
|
|
download: function pdfViewDownload() {
|
|
function noData() {
|
|
FirefoxCom.request('download', { originalUrl: url });
|
|
}
|
|
var url = this.url.split('#')[0];
|
|
url += '#pdfjs.action=download';
|
|
window.open(url, '_parent');
|
|
},
|
|
|
|
fallback: function pdfViewFallback() {
|
|
return;
|
|
},
|
|
|
|
navigateTo: function pdfViewNavigateTo(dest) {
|
|
if (typeof dest === 'string')
|
|
dest = this.destinations[dest];
|
|
if (!(dest instanceof Array))
|
|
return; // invalid destination
|
|
// dest array looks like that: <page-ref> </XYZ|FitXXX> <args..>
|
|
var destRef = dest[0];
|
|
var pageNumber = destRef instanceof Object ?
|
|
this.pagesRefMap[destRef.num + ' ' + destRef.gen + ' R'] : (destRef + 1);
|
|
if (pageNumber > this.pages.length)
|
|
pageNumber = this.pages.length;
|
|
if (pageNumber) {
|
|
this.page = pageNumber;
|
|
var currentPage = this.pages[pageNumber - 1];
|
|
currentPage.scrollIntoView(dest);
|
|
}
|
|
},
|
|
|
|
getDestinationHash: function pdfViewGetDestinationHash(dest) {
|
|
if (typeof dest === 'string')
|
|
return PDFView.getAnchorUrl('#' + escape(dest));
|
|
if (dest instanceof Array) {
|
|
var destRef = dest[0]; // see navigateTo method for dest format
|
|
var pageNumber = destRef instanceof Object ?
|
|
this.pagesRefMap[destRef.num + ' ' + destRef.gen + ' R'] :
|
|
(destRef + 1);
|
|
if (pageNumber) {
|
|
var pdfOpenParams = PDFView.getAnchorUrl('#page=' + pageNumber);
|
|
var destKind = dest[1];
|
|
if (typeof destKind === 'object' && 'name' in destKind &&
|
|
destKind.name == 'XYZ') {
|
|
var scale = (dest[4] || this.currentScale);
|
|
pdfOpenParams += '&zoom=' + (scale * 100);
|
|
if (dest[2] || dest[3]) {
|
|
pdfOpenParams += ',' + (dest[2] || 0) + ',' + (dest[3] || 0);
|
|
}
|
|
}
|
|
return pdfOpenParams;
|
|
}
|
|
}
|
|
return '';
|
|
},
|
|
|
|
/**
|
|
* For the firefox extension we prefix the full url on anchor links so they
|
|
* don't come up as resource:// urls and so open in new tab/window works.
|
|
* @param {String} anchor The anchor hash include the #.
|
|
*/
|
|
getAnchorUrl: function getAnchorUrl(anchor) {
|
|
return anchor;
|
|
},
|
|
|
|
/**
|
|
* Returns scale factor for the canvas. It makes sense for the HiDPI displays.
|
|
* @return {Object} The object with horizontal (sx) and vertical (sy)
|
|
scales. The scaled property is set to false if scaling is
|
|
not required, true otherwise.
|
|
*/
|
|
getOutputScale: function pdfViewGetOutputDPI() {
|
|
var pixelRatio = 'devicePixelRatio' in window ? window.devicePixelRatio : 1;
|
|
return {
|
|
sx: pixelRatio,
|
|
sy: pixelRatio,
|
|
scaled: pixelRatio != 1
|
|
};
|
|
},
|
|
|
|
/**
|
|
* 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 = mozL10n.get('error_version_info',
|
|
{version: PDFJS.version || '?', build: PDFJS.build || '?'},
|
|
'PDF.js v{{version}} (build: {{build}})') + '\n';
|
|
if (moreInfo) {
|
|
moreInfoText +=
|
|
mozL10n.get('error_message', {message: moreInfo.message},
|
|
'Message: {{message}}');
|
|
if (moreInfo.stack) {
|
|
moreInfoText += '\n' +
|
|
mozL10n.get('error_stack', {stack: moreInfo.stack},
|
|
'Stack: {{stack}}');
|
|
} else {
|
|
if (moreInfo.filename) {
|
|
moreInfoText += '\n' +
|
|
mozL10n.get('error_file', {file: moreInfo.filename},
|
|
'File: {{file}}');
|
|
}
|
|
if (moreInfo.lineNumber) {
|
|
moreInfoText += '\n' +
|
|
mozL10n.get('error_line', {line: moreInfo.lineNumber},
|
|
'Line: {{line}}');
|
|
}
|
|
}
|
|
}
|
|
|
|
var loadingBox = document.getElementById('loadingBox');
|
|
loadingBox.setAttribute('hidden', 'true');
|
|
|
|
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');
|
|
};
|
|
lessInfoButton.onclick = function() {
|
|
errorMoreInfo.setAttribute('hidden', 'true');
|
|
moreInfoButton.removeAttribute('hidden');
|
|
lessInfoButton.setAttribute('hidden', 'true');
|
|
};
|
|
moreInfoButton.removeAttribute('hidden');
|
|
lessInfoButton.setAttribute('hidden', 'true');
|
|
errorMoreInfo.value = moreInfoText;
|
|
|
|
errorMoreInfo.rows = moreInfoText.split('\n').length - 1;
|
|
},
|
|
|
|
progress: function pdfViewProgress(level) {
|
|
var percent = Math.round(level * 100);
|
|
PDFView.loadingBar.percent = percent;
|
|
},
|
|
|
|
load: function pdfViewLoad(pdfDocument, scale) {
|
|
function bindOnAfterDraw(pageView, thumbnailView) {
|
|
// when page is painted, using the image as thumbnail base
|
|
pageView.onAfterDraw = function pdfViewLoadOnAfterDraw() {
|
|
thumbnailView.setImage(pageView.canvas);
|
|
};
|
|
}
|
|
|
|
this.pdfDocument = pdfDocument;
|
|
|
|
var errorWrapper = document.getElementById('errorWrapper');
|
|
errorWrapper.setAttribute('hidden', 'true');
|
|
|
|
var loadingBox = document.getElementById('loadingBox');
|
|
loadingBox.setAttribute('hidden', 'true');
|
|
var loadingIndicator = document.getElementById('loading');
|
|
loadingIndicator.textContent = '';
|
|
|
|
var thumbsView = document.getElementById('thumbnailView');
|
|
thumbsView.parentNode.scrollTop = 0;
|
|
|
|
while (thumbsView.hasChildNodes())
|
|
thumbsView.removeChild(thumbsView.lastChild);
|
|
|
|
if ('_loadingInterval' in thumbsView)
|
|
clearInterval(thumbsView._loadingInterval);
|
|
|
|
var container = document.getElementById('viewer');
|
|
while (container.hasChildNodes())
|
|
container.removeChild(container.lastChild);
|
|
|
|
var pagesCount = pdfDocument.numPages;
|
|
|
|
var id = pdfDocument.fingerprint;
|
|
document.getElementById('numPages').textContent =
|
|
mozL10n.get('page_of', {pageCount: pagesCount}, 'of {{pageCount}}');
|
|
document.getElementById('pageNumber').max = pagesCount;
|
|
|
|
PDFView.documentFingerprint = id;
|
|
var store = PDFView.store = new Settings(id);
|
|
var storePromise = store.initializedPromise;
|
|
|
|
this.pageRotation = 0;
|
|
|
|
var pages = this.pages = [];
|
|
this.pageText = [];
|
|
this.startedTextExtraction = false;
|
|
var pagesRefMap = this.pagesRefMap = {};
|
|
var thumbnails = this.thumbnails = [];
|
|
var pagePromises = [];
|
|
|
|
var firstPageLoaded = true;
|
|
|
|
var self = this;
|
|
for (var pageIdx = 0; pageIdx < pagesCount; ++pageIdx) {
|
|
var pageNum = pageIdx + 1;
|
|
var pagePromise = pdfDocument.getPage(pageNum);
|
|
pagePromise.then(function(page) {
|
|
|
|
if (firstPageLoaded) {
|
|
var pagesFrag = document.createDocumentFragment();
|
|
// TODO(mack): clone
|
|
var defaultView = page.view;
|
|
for (var pageIdx = 0; pageIdx < pagesCount; ++pageIdx) {
|
|
var pageNum = pageIdx + 1;
|
|
var pageView = new PageView(container, pageNum, scale,
|
|
self.navigateTo.bind(self), defaultView);
|
|
pages[pageIdx] = pageView;
|
|
pagesFrag.appendChild(pageView.element);
|
|
}
|
|
container.appendChild(pagesFrag);
|
|
|
|
var storedHash = null;
|
|
if (store.get('exists', false)) {
|
|
var page_ = store.get('page', '1');
|
|
var zoom = store.get('zoom', PDFView.currentScale);
|
|
var left = store.get('scrollLeft', '0');
|
|
var top = store.get('scrollTop', '0');
|
|
|
|
storedHash =
|
|
'page=' + page_ + '&zoom=' + zoom + ',' + left +',' + top;
|
|
}
|
|
|
|
self.setInitialView(storedHash, scale);
|
|
firstPageLoaded = false;
|
|
}
|
|
|
|
var pageIdx = page.pageInfo.pageIndex;
|
|
var pageNum = pageIdx + 1;
|
|
|
|
var pageView = pages[pageIdx];
|
|
pageView.setPdfPage(page);
|
|
pageView.setStats(page.stats);
|
|
var thumbnailView = new ThumbnailView(thumbsView, page, pageNum);
|
|
bindOnAfterDraw(pageView, thumbnailView);
|
|
|
|
pages[pageIdx] = pageView;
|
|
thumbnails[pageIdx] = thumbnailView;
|
|
var pageRef = page.ref;
|
|
pagesRefMap[pageRef.num + ' ' + pageRef.gen + ' R'] = pageNum;
|
|
|
|
var visiblePages = self.visiblePages;
|
|
var firstNum = visiblePages.first.id;
|
|
var lastNum = visiblePages.last.id;
|
|
if (pageNum >= firstNum && pageNum <= lastNum) {
|
|
// TODO(mack): This logic could probably be better, as it's probably
|
|
// going in here more often than necessary
|
|
self.renderHighestPriority();
|
|
//updateViewarea();
|
|
}
|
|
});
|
|
pagePromises.push(pagePromise);
|
|
}
|
|
|
|
var pagesPromise = PDFJS.Promise.all(pagePromises);
|
|
|
|
var destinationsPromise = pdfDocument.getDestinations();
|
|
destinationsPromise.then(function(destinations) {
|
|
self.destinations = destinations;
|
|
});
|
|
|
|
// outline and initial view depends on destinations and pagesRefMap
|
|
var promises = [pagesPromise, destinationsPromise, storePromise,
|
|
PDFView.animationStartedPromise];
|
|
PDFJS.Promise.all(promises).then(function() {
|
|
pdfDocument.getOutline().then(function(outline) {
|
|
self.outline = new DocumentOutlineView(outline);
|
|
});
|
|
});
|
|
|
|
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 || '-') +
|
|
' / ' + (info.Creator || '-') + ']' +
|
|
(PDFJS.version ? ' (PDF.js: ' + PDFJS.version + ')' : ''));
|
|
|
|
var pdfTitle;
|
|
if (metadata) {
|
|
if (metadata.has('dc:title'))
|
|
pdfTitle = metadata.get('dc:title');
|
|
}
|
|
|
|
if (!pdfTitle && info && info['Title'])
|
|
pdfTitle = info['Title'];
|
|
|
|
if (pdfTitle)
|
|
self.setTitle(pdfTitle + ' - ' + document.title);
|
|
|
|
if (info.IsAcroFormPresent) {
|
|
// AcroForm/XFA was found
|
|
PDFView.fallback();
|
|
}
|
|
});
|
|
},
|
|
|
|
setInitialView: function pdfViewSetInitialView(storedHash, scale) {
|
|
// Reset the current scale, as otherwise the page's scale might not get
|
|
// updated if the zoom level stayed the same.
|
|
this.currentScale = 0;
|
|
this.currentScaleValue = null;
|
|
if (this.initialBookmark) {
|
|
this.setHash(this.initialBookmark);
|
|
this.initialBookmark = null;
|
|
}
|
|
else if (storedHash)
|
|
this.setHash(storedHash);
|
|
else if (scale) {
|
|
this.parseScale(scale, true);
|
|
this.page = 1;
|
|
}
|
|
|
|
if (PDFView.currentScale === UNKNOWN_SCALE) {
|
|
// Scale was not initialized: invalid bookmark or scale was not specified.
|
|
// Setting the default one.
|
|
this.parseScale(DEFAULT_SCALE, true);
|
|
}
|
|
},
|
|
|
|
renderHighestPriority: function pdfViewRenderHighestPriority() {
|
|
// Pages have a higher priority than thumbnails, so check them first.
|
|
this.visiblePages = this.getVisiblePages();
|
|
var pageView = this.getHighestPriority(this.visiblePages, this.pages,
|
|
this.pageViewScroll.down);
|
|
if (pageView) {
|
|
this.renderView(pageView, 'page');
|
|
return;
|
|
}
|
|
// No pages needed rendering so check thumbnails.
|
|
if (this.sidebarOpen) {
|
|
var visibleThumbs = this.getVisibleThumbs();
|
|
var thumbView = this.getHighestPriority(visibleThumbs,
|
|
this.thumbnails,
|
|
this.thumbnailViewScroll.down);
|
|
if (thumbView)
|
|
this.renderView(thumbView, 'thumbnail');
|
|
}
|
|
},
|
|
|
|
getHighestPriority: function pdfViewGetHighestPriority(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.isViewRenderable(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.isViewRenderable(views[nextPageIndex]))
|
|
return views[nextPageIndex];
|
|
} else {
|
|
var previousPageIndex = visible.first.id - 2;
|
|
if (views[previousPageIndex] &&
|
|
!this.isViewRenderable(views[previousPageIndex]))
|
|
return views[previousPageIndex];
|
|
}
|
|
// Everything that needs to be rendered has been.
|
|
return false;
|
|
},
|
|
|
|
isViewRenderable: function pdfViewNeedsRendering(view) {
|
|
if (view instanceof PageView && !view.pdfPage) {
|
|
return false;
|
|
}
|
|
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.
|
|
renderView: function pdfViewRender(view, type) {
|
|
var state = view.renderingState;
|
|
switch (state) {
|
|
case RenderingStates.FINISHED:
|
|
return false;
|
|
case RenderingStates.PAUSED:
|
|
PDFView.highestPriorityPage = type + view.id;
|
|
view.resume();
|
|
break;
|
|
case RenderingStates.RUNNING:
|
|
PDFView.highestPriorityPage = type + view.id;
|
|
break;
|
|
case RenderingStates.INITIAL:
|
|
PDFView.highestPriorityPage = type + view.id;
|
|
view.draw(this.renderHighestPriority.bind(this));
|
|
break;
|
|
}
|
|
return true;
|
|
},
|
|
|
|
setHash: function pdfViewSetHash(hash) {
|
|
if (!hash)
|
|
return;
|
|
|
|
if (hash.indexOf('=') >= 0) {
|
|
var params = PDFView.parseQueryString(hash);
|
|
// borrowing syntax from "Parameters for Opening PDF Files"
|
|
if ('nameddest' in params) {
|
|
PDFView.navigateTo(params.nameddest);
|
|
return;
|
|
}
|
|
if ('page' in params) {
|
|
var pageNumber = (params.page | 0) || 1;
|
|
if ('zoom' in params) {
|
|
var zoomArgs = params.zoom.split(','); // scale,left,top
|
|
// building destination array
|
|
|
|
// If the zoom value, it has to get divided by 100. If it is a string,
|
|
// it should stay as it is.
|
|
var zoomArg = zoomArgs[0];
|
|
var zoomArgNumber = parseFloat(zoomArg);
|
|
if (zoomArgNumber)
|
|
zoomArg = zoomArgNumber / 100;
|
|
|
|
var dest = [null, {name: 'XYZ'}, (zoomArgs[1] | 0),
|
|
(zoomArgs[2] | 0), zoomArg];
|
|
var currentPage = this.pages[pageNumber - 1];
|
|
currentPage.scrollIntoView(dest);
|
|
} else {
|
|
this.page = pageNumber; // simple page
|
|
}
|
|
}
|
|
} else if (/^\d+$/.test(hash)) // page number
|
|
this.page = hash;
|
|
else // named destination
|
|
PDFView.navigateTo(unescape(hash));
|
|
},
|
|
|
|
switchSidebarView: function pdfViewSwitchSidebarView(view) {
|
|
var thumbsView = document.getElementById('thumbnailView');
|
|
var outlineView = document.getElementById('outlineView');
|
|
|
|
var thumbsButton = document.getElementById('viewThumbnail');
|
|
var outlineButton = document.getElementById('viewOutline');
|
|
|
|
switch (view) {
|
|
case 'thumbs':
|
|
var wasOutlineViewVisible = thumbsView.classList.contains('hidden');
|
|
|
|
thumbsButton.classList.add('toggled');
|
|
outlineButton.classList.remove('toggled');
|
|
thumbsView.classList.remove('hidden');
|
|
outlineView.classList.add('hidden');
|
|
|
|
PDFView.renderHighestPriority();
|
|
|
|
if (wasOutlineViewVisible) {
|
|
// Ensure that the thumbnail of the current page is visible
|
|
// when switching from the outline view.
|
|
scrollIntoView(document.getElementById('thumbnailContainer' +
|
|
this.page));
|
|
}
|
|
break;
|
|
|
|
case 'outline':
|
|
thumbsButton.classList.remove('toggled');
|
|
outlineButton.classList.add('toggled');
|
|
thumbsView.classList.add('hidden');
|
|
outlineView.classList.remove('hidden');
|
|
|
|
if (outlineButton.getAttribute('disabled'))
|
|
return;
|
|
break;
|
|
}
|
|
},
|
|
|
|
getVisiblePages: function pdfViewGetVisiblePages() {
|
|
return this.getVisibleElements(this.container,
|
|
this.pages, true);
|
|
},
|
|
|
|
getVisibleThumbs: function pdfViewGetVisibleThumbs() {
|
|
return this.getVisibleElements(this.thumbnailContainer,
|
|
this.thumbnails);
|
|
},
|
|
|
|
// Generic helper to find out what elements are visible within a scroll pane.
|
|
getVisibleElements: function pdfViewGetVisibleElements(
|
|
scrollEl, views, sortByVisibility) {
|
|
var currentHeight = 0, view;
|
|
var top = scrollEl.scrollTop;
|
|
|
|
for (var i = 1, ii = views.length; i <= ii; ++i) {
|
|
view = views[i - 1];
|
|
currentHeight = view.el.offsetTop;
|
|
if (currentHeight + view.el.clientHeight > top)
|
|
break;
|
|
currentHeight += view.el.clientHeight;
|
|
}
|
|
|
|
var visible = [];
|
|
|
|
// Algorithm broken in fullscreen mode
|
|
if (this.isFullscreen) {
|
|
var currentPage = this.pages[this.page - 1];
|
|
visible.push({
|
|
id: currentPage.id,
|
|
view: currentPage
|
|
});
|
|
|
|
return { first: currentPage, last: currentPage, views: visible};
|
|
}
|
|
|
|
var bottom = top + scrollEl.clientHeight;
|
|
var nextHeight, hidden, percent, viewHeight;
|
|
for (; i <= ii && currentHeight < bottom; ++i) {
|
|
view = views[i - 1];
|
|
viewHeight = view.el.clientHeight;
|
|
currentHeight = view.el.offsetTop;
|
|
nextHeight = currentHeight + viewHeight;
|
|
hidden = Math.max(0, top - currentHeight) +
|
|
Math.max(0, nextHeight - bottom);
|
|
percent = Math.floor((viewHeight - hidden) * 100.0 / viewHeight);
|
|
visible.push({ id: view.id, y: currentHeight,
|
|
view: view, percent: percent });
|
|
currentHeight = nextHeight;
|
|
}
|
|
|
|
var first = visible[0];
|
|
var last = visible[visible.length - 1];
|
|
|
|
if (sortByVisibility) {
|
|
visible.sort(function(a, b) {
|
|
var pc = a.percent - b.percent;
|
|
if (Math.abs(pc) > 0.001)
|
|
return -pc;
|
|
|
|
return a.id - b.id; // ensure stability
|
|
});
|
|
}
|
|
|
|
return {first: first, last: last, views: visible};
|
|
},
|
|
|
|
// Helper function to parse query string (e.g. ?param1=value&parm2=...).
|
|
parseQueryString: function pdfViewParseQueryString(query) {
|
|
var parts = query.split('&');
|
|
var params = {};
|
|
for (var i = 0, ii = parts.length; i < parts.length; ++i) {
|
|
var param = parts[i].split('=');
|
|
var key = param[0];
|
|
var value = param.length > 1 ? param[1] : null;
|
|
params[unescape(key)] = unescape(value);
|
|
}
|
|
return params;
|
|
},
|
|
|
|
beforePrint: function pdfViewSetupBeforePrint() {
|
|
if (!this.supportsPrinting) {
|
|
var printMessage = mozL10n.get('printing_not_supported', null,
|
|
'Warning: Printing is not fully supported by this browser.');
|
|
this.error(printMessage);
|
|
return;
|
|
}
|
|
var body = document.querySelector('body');
|
|
body.setAttribute('data-mozPrintCallback', true);
|
|
for (var i = 0, ii = this.pages.length; i < ii; ++i) {
|
|
this.pages[i].beforePrint();
|
|
}
|
|
},
|
|
|
|
afterPrint: function pdfViewSetupAfterPrint() {
|
|
var div = document.getElementById('printContainer');
|
|
while (div.hasChildNodes())
|
|
div.removeChild(div.lastChild);
|
|
},
|
|
|
|
fullscreen: function pdfViewFullscreen() {
|
|
var isFullscreen = document.fullscreenElement || document.mozFullScreen ||
|
|
document.webkitIsFullScreen;
|
|
|
|
if (isFullscreen) {
|
|
return false;
|
|
}
|
|
|
|
var wrapper = document.getElementById('viewerContainer');
|
|
if (document.documentElement.requestFullscreen) {
|
|
wrapper.requestFullscreen();
|
|
} else if (document.documentElement.mozRequestFullScreen) {
|
|
wrapper.mozRequestFullScreen();
|
|
} else if (document.documentElement.webkitRequestFullScreen) {
|
|
wrapper.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT);
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
this.isFullscreen = true;
|
|
var currentPage = this.pages[this.page - 1];
|
|
this.previousScale = this.currentScaleValue;
|
|
this.parseScale('page-fit', true);
|
|
|
|
// Wait for fullscreen to take effect
|
|
setTimeout(function() {
|
|
currentPage.scrollIntoView();
|
|
}, 0);
|
|
|
|
this.showPresentationControls();
|
|
return true;
|
|
},
|
|
|
|
exitFullscreen: function pdfViewExitFullscreen() {
|
|
this.isFullscreen = false;
|
|
this.parseScale(this.previousScale);
|
|
this.page = this.page;
|
|
this.clearMouseScrollState();
|
|
this.hidePresentationControls();
|
|
},
|
|
|
|
showPresentationControls: function pdfViewShowPresentationControls() {
|
|
var DELAY_BEFORE_HIDING_CONTROLS = 3000;
|
|
var wrapper = document.getElementById('viewerContainer');
|
|
if (this.presentationControlsTimeout) {
|
|
clearTimeout(this.presentationControlsTimeout);
|
|
} else {
|
|
wrapper.classList.add('presentationControls');
|
|
}
|
|
this.presentationControlsTimeout = setTimeout(function hideControls() {
|
|
wrapper.classList.remove('presentationControls');
|
|
delete PDFView.presentationControlsTimeout;
|
|
}, DELAY_BEFORE_HIDING_CONTROLS);
|
|
},
|
|
|
|
hidePresentationControls: function pdfViewShowPresentationControls() {
|
|
if (!this.presentationControlsTimeout) {
|
|
return;
|
|
}
|
|
clearTimeout(this.presentationControlsTimeout);
|
|
delete this.presentationControlsTimeout;
|
|
|
|
var wrapper = document.getElementById('viewerContainer');
|
|
wrapper.classList.remove('presentationControls');
|
|
},
|
|
|
|
rotatePages: function pdfViewPageRotation(delta) {
|
|
|
|
this.pageRotation = (this.pageRotation + 360 + delta) % 360;
|
|
|
|
for (var i = 0, l = this.pages.length; i < l; i++) {
|
|
var page = this.pages[i];
|
|
page.update(page.scale, this.pageRotation);
|
|
}
|
|
|
|
for (var i = 0, l = this.thumbnails.length; i < l; i++) {
|
|
var thumb = this.thumbnails[i];
|
|
thumb.updateRotation(this.pageRotation);
|
|
}
|
|
|
|
var currentPage = this.pages[this.page - 1];
|
|
|
|
this.parseScale(this.currentScaleValue, true);
|
|
|
|
this.renderHighestPriority();
|
|
|
|
// Wait for fullscreen to take effect
|
|
setTimeout(function() {
|
|
currentPage.scrollIntoView();
|
|
}, 0);
|
|
},
|
|
|
|
/**
|
|
* This function flips the page in presentation mode if the user scrolls up
|
|
* or down with large enough motion and prevents page flipping too often.
|
|
*
|
|
* @this {PDFView}
|
|
* @param {number} mouseScrollDelta The delta value from the mouse event.
|
|
*/
|
|
mouseScroll: function pdfViewMouseScroll(mouseScrollDelta) {
|
|
var MOUSE_SCROLL_COOLDOWN_TIME = 50;
|
|
|
|
var currentTime = (new Date()).getTime();
|
|
var storedTime = this.mouseScrollTimeStamp;
|
|
|
|
// In case one page has already been flipped there is a cooldown time
|
|
// which has to expire before next page can be scrolled on to.
|
|
if (currentTime > storedTime &&
|
|
currentTime - storedTime < MOUSE_SCROLL_COOLDOWN_TIME)
|
|
return;
|
|
|
|
// In case the user decides to scroll to the opposite direction than before
|
|
// clear the accumulated delta.
|
|
if ((this.mouseScrollDelta > 0 && mouseScrollDelta < 0) ||
|
|
(this.mouseScrollDelta < 0 && mouseScrollDelta > 0))
|
|
this.clearMouseScrollState();
|
|
|
|
this.mouseScrollDelta += mouseScrollDelta;
|
|
|
|
var PAGE_FLIP_THRESHOLD = 120;
|
|
if (Math.abs(this.mouseScrollDelta) >= PAGE_FLIP_THRESHOLD) {
|
|
|
|
var PageFlipDirection = {
|
|
UP: -1,
|
|
DOWN: 1
|
|
};
|
|
|
|
// In fullscreen mode scroll one page at a time.
|
|
var pageFlipDirection = (this.mouseScrollDelta > 0) ?
|
|
PageFlipDirection.UP :
|
|
PageFlipDirection.DOWN;
|
|
this.clearMouseScrollState();
|
|
var currentPage = this.page;
|
|
|
|
// In case we are already on the first or the last page there is no need
|
|
// to do anything.
|
|
if ((currentPage == 1 && pageFlipDirection == PageFlipDirection.UP) ||
|
|
(currentPage == this.pages.length &&
|
|
pageFlipDirection == PageFlipDirection.DOWN))
|
|
return;
|
|
|
|
this.page += pageFlipDirection;
|
|
this.mouseScrollTimeStamp = currentTime;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* This function clears the member attributes used with mouse scrolling in
|
|
* presentation mode.
|
|
*
|
|
* @this {PDFView}
|
|
*/
|
|
clearMouseScrollState: function pdfViewClearMouseScrollState() {
|
|
this.mouseScrollTimeStamp = 0;
|
|
this.mouseScrollDelta = 0;
|
|
}
|
|
};
|
|
|
|
var PageView = function pageView(container, id, scale,
|
|
navigateTo, defaultView) {
|
|
this.id = id;
|
|
//this.pdfPage = pdfPage;
|
|
|
|
this.rotation = 0;
|
|
this.scale = scale || 1.0;
|
|
//this.viewport = this.pdfPage.getViewport(this.scale, this.pdfPage.rotate);
|
|
this.defaultView = defaultView;
|
|
|
|
this.getViewport = function pageViewGetViewport() {
|
|
var view;
|
|
var totalRotation;
|
|
if (this.pdfPage) {
|
|
totalRotation = (this.rotation + this.pdfPage.rotate) % 360;
|
|
view = this.pdfPage.view;
|
|
} else {
|
|
totalRotation = this.rotation;
|
|
view = this.defaultView;
|
|
}
|
|
return new PDFJS.PageViewport(view, this.scale, totalRotation, 0, 0);
|
|
};
|
|
|
|
this.viewport = this.getViewport();
|
|
|
|
this.renderingState = RenderingStates.INITIAL;
|
|
this.resume = null;
|
|
|
|
this.textContent = null;
|
|
this.textLayer = null;
|
|
|
|
var anchor = document.createElement('a');
|
|
anchor.name = '' + this.id;
|
|
|
|
var div = this.el = document.createElement('div');
|
|
//var div = this.el = element;
|
|
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';
|
|
|
|
this.container = container;
|
|
//this.container.appendChild(anchor);
|
|
//this.container.appendChild(div);
|
|
|
|
var docFrag = document.createDocumentFragment();
|
|
docFrag.appendChild(anchor);
|
|
docFrag.appendChild(div);
|
|
|
|
Object.defineProperty(this, 'element', {
|
|
get: function PlaceholderPageView_getElement() {
|
|
return docFrag;
|
|
},
|
|
enumerable: true
|
|
});
|
|
|
|
this.setPdfPage = function pageViewSetPdfPage(pdfPage) {
|
|
this.pdfPage = pdfPage;
|
|
};
|
|
|
|
this.setStats = function pageViewSetStats(stats) {
|
|
this.stats = stats;
|
|
};
|
|
|
|
this.destroy = function pageViewDestroy() {
|
|
this.update();
|
|
this.pdfPage.destroy();
|
|
};
|
|
|
|
this.update = function pageViewUpdate(scale, rotation) {
|
|
this.renderingState = RenderingStates.INITIAL;
|
|
this.resume = null;
|
|
|
|
if (typeof rotation !== 'undefined') {
|
|
this.rotation = rotation;
|
|
}
|
|
|
|
this.scale = scale || this.scale;
|
|
var viewport = this.getViewport();
|
|
|
|
this.viewport = viewport;
|
|
div.style.width = Math.floor(viewport.width) + 'px';
|
|
div.style.height = Math.floor(viewport.height) + 'px';
|
|
|
|
while (div.hasChildNodes())
|
|
div.removeChild(div.lastChild);
|
|
div.removeAttribute('data-loaded');
|
|
|
|
delete this.canvas;
|
|
|
|
this.loadingIconDiv = document.createElement('div');
|
|
this.loadingIconDiv.className = 'loadingIcon';
|
|
div.appendChild(this.loadingIconDiv);
|
|
};
|
|
|
|
Object.defineProperty(this, 'width', {
|
|
get: function PageView_getWidth() {
|
|
return this.viewport.width;
|
|
},
|
|
enumerable: true
|
|
});
|
|
|
|
Object.defineProperty(this, 'height', {
|
|
get: function PageView_getHeight() {
|
|
return this.viewport.height;
|
|
},
|
|
enumerable: true
|
|
});
|
|
|
|
function setupAnnotations(pdfPage, viewport) {
|
|
function bindLink(link, dest) {
|
|
link.href = PDFView.getDestinationHash(dest);
|
|
link.onclick = function pageViewSetupLinksOnclick() {
|
|
if (dest)
|
|
PDFView.navigateTo(dest);
|
|
return false;
|
|
};
|
|
}
|
|
function createElementWithStyle(tagName, item, rect) {
|
|
if (!rect) {
|
|
rect = viewport.convertToViewportRectangle(item.rect);
|
|
rect = PDFJS.Util.normalizeRect(rect);
|
|
}
|
|
var element = document.createElement(tagName);
|
|
element.style.left = Math.floor(rect[0]) + 'px';
|
|
element.style.top = Math.floor(rect[1]) + 'px';
|
|
element.style.width = Math.ceil(rect[2] - rect[0]) + 'px';
|
|
element.style.height = Math.ceil(rect[3] - rect[1]) + 'px';
|
|
return element;
|
|
}
|
|
function createTextAnnotation(item) {
|
|
var container = document.createElement('section');
|
|
container.className = 'annotText';
|
|
|
|
var rect = viewport.convertToViewportRectangle(item.rect);
|
|
rect = PDFJS.Util.normalizeRect(rect);
|
|
// sanity check because of OOo-generated PDFs
|
|
if ((rect[3] - rect[1]) < ANNOT_MIN_SIZE) {
|
|
rect[3] = rect[1] + ANNOT_MIN_SIZE;
|
|
}
|
|
if ((rect[2] - rect[0]) < ANNOT_MIN_SIZE) {
|
|
rect[2] = rect[0] + (rect[3] - rect[1]); // make it square
|
|
}
|
|
var image = createElementWithStyle('img', item, rect);
|
|
var iconName = item.name;
|
|
image.src = IMAGE_DIR + 'annotation-' +
|
|
iconName.toLowerCase() + '.svg';
|
|
image.alt = mozL10n.get('text_annotation_type', {type: iconName},
|
|
'[{{type}} Annotation]');
|
|
var content = document.createElement('div');
|
|
content.setAttribute('hidden', true);
|
|
var title = document.createElement('h1');
|
|
var text = document.createElement('p');
|
|
content.style.left = Math.floor(rect[2]) + 'px';
|
|
content.style.top = Math.floor(rect[1]) + 'px';
|
|
title.textContent = item.title;
|
|
|
|
if (!item.content && !item.title) {
|
|
content.setAttribute('hidden', true);
|
|
} else {
|
|
var e = document.createElement('span');
|
|
var lines = item.content.split(/(?:\r\n?|\n)/);
|
|
for (var i = 0, ii = lines.length; i < ii; ++i) {
|
|
var line = lines[i];
|
|
e.appendChild(document.createTextNode(line));
|
|
if (i < (ii - 1))
|
|
e.appendChild(document.createElement('br'));
|
|
}
|
|
text.appendChild(e);
|
|
image.addEventListener('mouseover', function annotationImageOver() {
|
|
content.removeAttribute('hidden');
|
|
}, false);
|
|
|
|
image.addEventListener('mouseout', function annotationImageOut() {
|
|
content.setAttribute('hidden', true);
|
|
}, false);
|
|
}
|
|
|
|
content.appendChild(title);
|
|
content.appendChild(text);
|
|
container.appendChild(image);
|
|
container.appendChild(content);
|
|
|
|
return container;
|
|
}
|
|
|
|
pdfPage.getAnnotations().then(function(items) {
|
|
for (var i = 0; i < items.length; i++) {
|
|
var item = items[i];
|
|
switch (item.type) {
|
|
case 'Link':
|
|
var link = createElementWithStyle('a', item);
|
|
link.href = item.url || '';
|
|
if (!item.url)
|
|
bindLink(link, ('dest' in item) ? item.dest : null);
|
|
div.appendChild(link);
|
|
break;
|
|
case 'Text':
|
|
var textAnnotation = createTextAnnotation(item);
|
|
if (textAnnotation)
|
|
div.appendChild(textAnnotation);
|
|
break;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
this.getPagePoint = function pageViewGetPagePoint(x, y) {
|
|
return this.viewport.convertToPdfPoint(x, y);
|
|
};
|
|
|
|
this.scrollIntoView = function pageViewScrollIntoView(dest) {
|
|
if (!dest) {
|
|
scrollIntoView(div);
|
|
return;
|
|
}
|
|
|
|
var x = 0, y = 0;
|
|
var width = 0, height = 0, widthScale, heightScale;
|
|
var scale = 0;
|
|
switch (dest[1].name) {
|
|
case 'XYZ':
|
|
x = dest[2];
|
|
y = dest[3];
|
|
scale = dest[4];
|
|
break;
|
|
case 'Fit':
|
|
case 'FitB':
|
|
scale = 'page-fit';
|
|
break;
|
|
case 'FitH':
|
|
case 'FitBH':
|
|
y = dest[2];
|
|
scale = 'page-width';
|
|
break;
|
|
case 'FitV':
|
|
case 'FitBV':
|
|
x = dest[2];
|
|
scale = 'page-height';
|
|
break;
|
|
case 'FitR':
|
|
x = dest[2];
|
|
y = dest[3];
|
|
width = dest[4] - x;
|
|
height = dest[5] - y;
|
|
widthScale = (this.container.clientWidth - SCROLLBAR_PADDING) /
|
|
width / CSS_UNITS;
|
|
heightScale = (this.container.clientHeight - SCROLLBAR_PADDING) /
|
|
height / CSS_UNITS;
|
|
scale = Math.min(widthScale, heightScale);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
if (scale && scale !== PDFView.currentScale)
|
|
PDFView.parseScale(scale, true, true);
|
|
else if (PDFView.currentScale === UNKNOWN_SCALE)
|
|
PDFView.parseScale(DEFAULT_SCALE, true, true);
|
|
|
|
var boundingRect = [
|
|
this.viewport.convertToViewportPoint(x, y),
|
|
this.viewport.convertToViewportPoint(x + width, y + height)
|
|
];
|
|
setTimeout(function pageViewScrollIntoViewRelayout() {
|
|
// letting page to re-layout before scrolling
|
|
var scale = PDFView.currentScale;
|
|
var x = Math.min(boundingRect[0][0], boundingRect[1][0]);
|
|
var y = Math.min(boundingRect[0][1], boundingRect[1][1]);
|
|
var width = Math.abs(boundingRect[0][0] - boundingRect[1][0]);
|
|
var height = Math.abs(boundingRect[0][1] - boundingRect[1][1]);
|
|
|
|
scrollIntoView(div, {left: x, top: y, width: width, height: height});
|
|
}, 0);
|
|
};
|
|
|
|
this.getTextContent = function pageviewGetTextContent() {
|
|
if (!this.textContent) {
|
|
this.textContent = this.pdfPage.getTextContent();
|
|
}
|
|
return this.textContent;
|
|
};
|
|
|
|
this.draw = function pageviewDraw(callback) {
|
|
if (!this.pdfPage) {
|
|
console.log('Cannot draw without page');
|
|
return;
|
|
}
|
|
var pdfPage = this.pdfPage;
|
|
|
|
if (this.renderingState !== RenderingStates.INITIAL) {
|
|
console.error('Must be in new state before drawing');
|
|
}
|
|
|
|
this.renderingState = RenderingStates.RUNNING;
|
|
|
|
var canvas = document.createElement('canvas');
|
|
canvas.id = 'page' + this.id;
|
|
canvas.mozOpaque = true;
|
|
div.appendChild(canvas);
|
|
this.canvas = canvas;
|
|
|
|
var textLayerDiv = null;
|
|
if (!PDFJS.disableTextLayer) {
|
|
textLayerDiv = document.createElement('div');
|
|
textLayerDiv.className = 'textLayer';
|
|
div.appendChild(textLayerDiv);
|
|
}
|
|
var imageLayerDiv = document.createElement('div');
|
|
imageLayerDiv.className = 'imageLayer';
|
|
div.appendChild(imageLayerDiv);
|
|
var textLayer = this.textLayer =
|
|
textLayerDiv ? new TextLayerBuilder(textLayerDiv, this.id - 1) : null;
|
|
var imageLayer = getVideoOverlay(this.id);
|
|
if(imageLayer) {
|
|
imageLayer.div = imageLayerDiv;
|
|
}
|
|
var scale = this.scale, viewport = this.viewport;
|
|
var outputScale = PDFView.getOutputScale();
|
|
canvas.width = Math.floor(viewport.width) * outputScale.sx;
|
|
canvas.height = Math.floor(viewport.height) * outputScale.sy;
|
|
|
|
if (outputScale.scaled) {
|
|
var cssScale = 'scale(' + (1 / outputScale.sx) + ', ' +
|
|
(1 / outputScale.sy) + ')';
|
|
CustomStyle.setProp('transform' , canvas, cssScale);
|
|
CustomStyle.setProp('transformOrigin' , canvas, '0% 0%');
|
|
if (textLayerDiv) {
|
|
CustomStyle.setProp('transform' , textLayerDiv, cssScale);
|
|
CustomStyle.setProp('transformOrigin' , textLayerDiv, '0% 0%');
|
|
}
|
|
CustomStyle.setProp('transform' , imageLayerDiv, cssScale);
|
|
CustomStyle.setProp('transformOrigin' , imageLayerDiv, '0% 0%');
|
|
}
|
|
|
|
var ctx = canvas.getContext('2d');
|
|
// TODO(mack): use data attributes to store these
|
|
ctx._scaleX = outputScale.sx;
|
|
ctx._scaleY = outputScale.sy;
|
|
ctx.save();
|
|
ctx.fillStyle = 'rgb(255, 255, 255)';
|
|
ctx.fillRect(0, 0, canvas.width, canvas.height);
|
|
ctx.restore();
|
|
if (outputScale.scaled) {
|
|
ctx.scale(outputScale.sx, outputScale.sy);
|
|
}
|
|
|
|
|
|
// Rendering area
|
|
|
|
var self = this;
|
|
var renderingWasReset = false;
|
|
function pageViewDrawCallback(error) {
|
|
if (renderingWasReset) {
|
|
return;
|
|
}
|
|
|
|
self.renderingState = RenderingStates.FINISHED;
|
|
|
|
if (self.loadingIconDiv) {
|
|
div.removeChild(self.loadingIconDiv);
|
|
delete self.loadingIconDiv;
|
|
}
|
|
|
|
if (error) {
|
|
PDFView.error(mozL10n.get('rendering_error', null,
|
|
'An error occurred while rendering the page.'), error);
|
|
}
|
|
|
|
self.stats = pdfPage.stats;
|
|
self.updateStats();
|
|
if (self.onAfterDraw)
|
|
self.onAfterDraw();
|
|
|
|
cache.push(self);
|
|
callback();
|
|
}
|
|
|
|
var renderContext = {
|
|
canvasContext: ctx,
|
|
viewport: this.viewport,
|
|
textLayer: textLayer,
|
|
imageLayer: imageLayer,
|
|
continueCallback: function pdfViewcContinueCallback(cont) {
|
|
if (self.renderingState === RenderingStates.INITIAL) {
|
|
// The page update() was called, we just need to abort any rendering.
|
|
renderingWasReset = true;
|
|
return;
|
|
}
|
|
|
|
if (PDFView.highestPriorityPage !== 'page' + self.id) {
|
|
self.renderingState = RenderingStates.PAUSED;
|
|
self.resume = function resumeCallback() {
|
|
self.renderingState = RenderingStates.RUNNING;
|
|
cont();
|
|
};
|
|
return;
|
|
}
|
|
cont();
|
|
}
|
|
};
|
|
this.pdfPage.render(renderContext).then(
|
|
function pdfPageRenderCallback() {
|
|
pageViewDrawCallback(null);
|
|
},
|
|
function pdfPageRenderError(error) {
|
|
pageViewDrawCallback(error);
|
|
}
|
|
);
|
|
|
|
if (textLayer) {
|
|
this.getTextContent().then(
|
|
function textContentResolved(textContent) {
|
|
textLayer.setTextContent(textContent);
|
|
}
|
|
);
|
|
}
|
|
|
|
setupAnnotations(this.pdfPage, this.viewport);
|
|
div.setAttribute('data-loaded', true);
|
|
};
|
|
|
|
this.beforePrint = function pageViewBeforePrint() {
|
|
var pdfPage = this.pdfPage;
|
|
|
|
if (!pdfPage) {
|
|
console.log('Pdf page has not been rendered and thus cannot be printed');
|
|
return;
|
|
}
|
|
|
|
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 = this.canvas = document.createElement('canvas');
|
|
canvas.width = Math.floor(viewport.width) * PRINT_OUTPUT_SCALE;
|
|
canvas.height = Math.floor(viewport.height) * PRINT_OUTPUT_SCALE;
|
|
canvas.style.width = (PRINT_OUTPUT_SCALE * viewport.width) + 'pt';
|
|
canvas.style.height = (PRINT_OUTPUT_SCALE * viewport.height) + 'pt';
|
|
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');
|
|
printContainer.appendChild(canvas);
|
|
|
|
var self = this;
|
|
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();
|
|
ctx.scale(PRINT_OUTPUT_SCALE, PRINT_OUTPUT_SCALE);
|
|
|
|
var renderContext = {
|
|
canvasContext: ctx,
|
|
viewport: viewport
|
|
};
|
|
|
|
pdfPage.render(renderContext).then(function() {
|
|
// Tell the printEngine that rendering this canvas/page has finished.
|
|
obj.done();
|
|
self.pdfPage.destroy();
|
|
}, 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();
|
|
self.pdfPage.destroy();
|
|
});
|
|
};
|
|
};
|
|
|
|
this.updateStats = function pageViewUpdateStats() {
|
|
if (!this.stats) {
|
|
console.log('No stats available');
|
|
}
|
|
|
|
if (PDFJS.pdfBug && Stats.enabled) {
|
|
var stats = this.stats;
|
|
Stats.add(this.id, stats);
|
|
}
|
|
};
|
|
};
|
|
|
|
var ThumbnailView = function thumbnailView(container, pdfPage, id) {
|
|
var anchor = document.createElement('a');
|
|
anchor.href = PDFView.getAnchorUrl('#page=' + id);
|
|
anchor.title = mozL10n.get('thumb_page_title', {page: id}, 'Page {{page}}');
|
|
anchor.onclick = function stopNavigation() {
|
|
PDFView.page = id;
|
|
return false;
|
|
};
|
|
|
|
var rotation = 0;
|
|
var totalRotation = (rotation + pdfPage.rotate) % 360;
|
|
var viewport = pdfPage.getViewport(1, totalRotation);
|
|
var pageWidth = this.width = viewport.width;
|
|
var pageHeight = this.height = viewport.height;
|
|
var pageRatio = pageWidth / pageHeight;
|
|
this.id = id;
|
|
|
|
var canvasWidth = 98;
|
|
var canvasHeight = canvasWidth / this.width * this.height;
|
|
var scaleX = this.scaleX = (canvasWidth / pageWidth);
|
|
var scaleY = this.scaleY = (canvasHeight / pageHeight);
|
|
|
|
var div = this.el = document.createElement('div');
|
|
div.id = 'thumbnailContainer' + id;
|
|
div.className = 'thumbnail';
|
|
|
|
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';
|
|
ring.style.width = canvasWidth + 'px';
|
|
ring.style.height = canvasHeight + 'px';
|
|
|
|
div.appendChild(ring);
|
|
anchor.appendChild(div);
|
|
container.appendChild(anchor);
|
|
|
|
this.hasImage = false;
|
|
this.renderingState = RenderingStates.INITIAL;
|
|
|
|
this.updateRotation = function(rot) {
|
|
|
|
rotation = rot;
|
|
totalRotation = (rotation + pdfPage.rotate) % 360;
|
|
viewport = pdfPage.getViewport(1, totalRotation);
|
|
pageWidth = this.width = viewport.width;
|
|
pageHeight = this.height = viewport.height;
|
|
pageRatio = pageWidth / pageHeight;
|
|
|
|
canvasHeight = canvasWidth / this.width * this.height;
|
|
scaleX = this.scaleX = (canvasWidth / pageWidth);
|
|
scaleY = this.scaleY = (canvasHeight / pageHeight);
|
|
|
|
div.removeAttribute('data-loaded');
|
|
ring.textContent = '';
|
|
ring.style.width = canvasWidth + 'px';
|
|
ring.style.height = canvasHeight + 'px';
|
|
|
|
this.hasImage = false;
|
|
this.renderingState = RenderingStates.INITIAL;
|
|
this.resume = null;
|
|
};
|
|
|
|
function getPageDrawContext() {
|
|
var canvas = document.createElement('canvas');
|
|
canvas.id = 'thumbnail' + id;
|
|
canvas.mozOpaque = true;
|
|
|
|
canvas.width = canvasWidth;
|
|
canvas.height = canvasHeight;
|
|
canvas.className = 'thumbnailImage';
|
|
canvas.setAttribute('aria-label', mozL10n.get('thumb_page_canvas',
|
|
{page: id}, 'Thumbnail of Page {{page}}'));
|
|
|
|
div.setAttribute('data-loaded', true);
|
|
|
|
ring.appendChild(canvas);
|
|
|
|
var ctx = canvas.getContext('2d');
|
|
ctx.save();
|
|
ctx.fillStyle = 'rgb(255, 255, 255)';
|
|
ctx.fillRect(0, 0, canvasWidth, canvasHeight);
|
|
ctx.restore();
|
|
return ctx;
|
|
}
|
|
|
|
this.drawingRequired = function thumbnailViewDrawingRequired() {
|
|
return !this.hasImage;
|
|
};
|
|
|
|
this.draw = function thumbnailViewDraw(callback) {
|
|
if (this.renderingState !== RenderingStates.INITIAL) {
|
|
console.error('Must be in new state before drawing');
|
|
}
|
|
|
|
this.renderingState = RenderingStates.RUNNING;
|
|
if (this.hasImage) {
|
|
callback();
|
|
return;
|
|
}
|
|
|
|
var self = this;
|
|
var ctx = getPageDrawContext();
|
|
var drawViewport = pdfPage.getViewport(scaleX, totalRotation);
|
|
var renderContext = {
|
|
canvasContext: ctx,
|
|
viewport: drawViewport,
|
|
continueCallback: function(cont) {
|
|
if (PDFView.highestPriorityPage !== 'thumbnail' + self.id) {
|
|
self.renderingState = RenderingStates.PAUSED;
|
|
self.resume = function() {
|
|
self.renderingState = RenderingStates.RUNNING;
|
|
cont();
|
|
};
|
|
return;
|
|
}
|
|
cont();
|
|
}
|
|
};
|
|
pdfPage.render(renderContext).then(
|
|
function pdfPageRenderCallback() {
|
|
self.renderingState = RenderingStates.FINISHED;
|
|
callback();
|
|
},
|
|
function pdfPageRenderError(error) {
|
|
self.renderingState = RenderingStates.FINISHED;
|
|
callback();
|
|
}
|
|
);
|
|
this.hasImage = true;
|
|
};
|
|
|
|
this.setImage = function thumbnailViewSetImage(img) {
|
|
if (this.hasImage || !img)
|
|
return;
|
|
this.renderingState = RenderingStates.FINISHED;
|
|
var ctx = getPageDrawContext();
|
|
ctx.drawImage(img, 0, 0, img.width, img.height,
|
|
0, 0, ctx.canvas.width, ctx.canvas.height);
|
|
|
|
this.hasImage = true;
|
|
};
|
|
};
|
|
|
|
var DocumentOutlineView = function documentOutlineView(outline) {
|
|
var outlineView = document.getElementById('outlineView');
|
|
while (outlineView.firstChild)
|
|
outlineView.removeChild(outlineView.firstChild);
|
|
|
|
function bindItemLink(domObj, item) {
|
|
domObj.href = PDFView.getDestinationHash(item.dest);
|
|
domObj.onclick = function documentOutlineViewOnclick(e) {
|
|
PDFView.navigateTo(item.dest);
|
|
return false;
|
|
};
|
|
}
|
|
|
|
if (!outline) {
|
|
var noOutline = document.createElement('div');
|
|
noOutline.classList.add('noOutline');
|
|
noOutline.textContent = mozL10n.get('no_outline', null,
|
|
'No Outline Available');
|
|
outlineView.appendChild(noOutline);
|
|
return;
|
|
}
|
|
|
|
var queue = [{parent: outlineView, items: outline}];
|
|
while (queue.length > 0) {
|
|
var levelData = queue.shift();
|
|
var i, n = levelData.items.length;
|
|
for (i = 0; i < n; i++) {
|
|
var item = levelData.items[i];
|
|
var div = document.createElement('div');
|
|
div.className = 'outlineItem';
|
|
var a = document.createElement('a');
|
|
bindItemLink(a, item);
|
|
a.textContent = item.title;
|
|
div.appendChild(a);
|
|
|
|
if (item.items.length > 0) {
|
|
var itemsDiv = document.createElement('div');
|
|
itemsDiv.className = 'outlineItems';
|
|
div.appendChild(itemsDiv);
|
|
queue.push({parent: itemsDiv, items: item.items});
|
|
}
|
|
|
|
levelData.parent.appendChild(div);
|
|
}
|
|
}
|
|
};
|
|
|
|
// optimised CSS custom property getter/setter
|
|
var CustomStyle = (function CustomStyleClosure() {
|
|
|
|
// As noted on: http://www.zachstronaut.com/posts/2009/02/17/
|
|
// animate-css-transforms-firefox-webkit.html
|
|
// in some versions of IE9 it is critical that ms appear in this list
|
|
// before Moz
|
|
var prefixes = ['ms', 'Moz', 'Webkit', 'O'];
|
|
var _cache = { };
|
|
|
|
function CustomStyle() {
|
|
}
|
|
|
|
CustomStyle.getProp = function get(propName, element) {
|
|
// check cache only when no element is given
|
|
if (arguments.length == 1 && typeof _cache[propName] == 'string') {
|
|
return _cache[propName];
|
|
}
|
|
|
|
element = element || document.documentElement;
|
|
var style = element.style, prefixed, uPropName;
|
|
|
|
// test standard property first
|
|
if (typeof style[propName] == 'string') {
|
|
return (_cache[propName] = propName);
|
|
}
|
|
|
|
// capitalize
|
|
uPropName = propName.charAt(0).toUpperCase() + propName.slice(1);
|
|
|
|
// test vendor specific properties
|
|
for (var i = 0, l = prefixes.length; i < l; i++) {
|
|
prefixed = prefixes[i] + uPropName;
|
|
if (typeof style[prefixed] == 'string') {
|
|
return (_cache[propName] = prefixed);
|
|
}
|
|
}
|
|
|
|
//if all fails then set to undefined
|
|
return (_cache[propName] = 'undefined');
|
|
};
|
|
|
|
CustomStyle.setProp = function set(propName, element, str) {
|
|
var prop = this.getProp(propName);
|
|
if (prop != 'undefined')
|
|
element.style[prop] = str;
|
|
};
|
|
|
|
return CustomStyle;
|
|
})();
|
|
|
|
var TextLayerBuilder = function textLayerBuilder(textLayerDiv, pageIdx) {
|
|
var textLayerFrag = document.createDocumentFragment();
|
|
|
|
this.textLayerDiv = textLayerDiv;
|
|
this.layoutDone = false;
|
|
this.divContentDone = false;
|
|
this.pageIdx = pageIdx;
|
|
this.matches = [];
|
|
|
|
this.beginLayout = function textLayerBuilderBeginLayout() {
|
|
this.textDivs = [];
|
|
this.textLayerQueue = [];
|
|
this.renderingDone = false;
|
|
};
|
|
|
|
this.endLayout = function textLayerBuilderEndLayout() {
|
|
this.layoutDone = true;
|
|
this.insertDivContent();
|
|
};
|
|
|
|
this.renderLayer = function textLayerBuilderRenderLayer() {
|
|
var self = this;
|
|
var textDivs = this.textDivs;
|
|
var textLayerDiv = this.textLayerDiv;
|
|
var canvas = document.createElement('canvas');
|
|
var ctx = canvas.getContext('2d');
|
|
|
|
// No point in rendering so many divs as it'd make the browser unusable
|
|
// even after the divs are rendered
|
|
var MAX_TEXT_DIVS_TO_RENDER = 100000;
|
|
if (textDivs.length > MAX_TEXT_DIVS_TO_RENDER)
|
|
return;
|
|
|
|
for (var i = 0, ii = textDivs.length; i < ii; i++) {
|
|
var textDiv = textDivs[i];
|
|
textLayerFrag.appendChild(textDiv);
|
|
|
|
ctx.font = textDiv.style.fontSize + ' ' + textDiv.style.fontFamily;
|
|
var width = ctx.measureText(textDiv.textContent).width;
|
|
|
|
if (width > 0) {
|
|
var textScale = textDiv.dataset.canvasWidth / width;
|
|
|
|
CustomStyle.setProp('transform' , textDiv,
|
|
'scale(' + textScale + ', 1)');
|
|
CustomStyle.setProp('transformOrigin' , textDiv, '0% 0%');
|
|
|
|
textLayerDiv.appendChild(textDiv);
|
|
}
|
|
}
|
|
|
|
this.renderingDone = true;
|
|
this.updateMatches();
|
|
|
|
textLayerDiv.appendChild(textLayerFrag);
|
|
};
|
|
|
|
this.setupRenderLayoutTimer = function textLayerSetupRenderLayoutTimer() {
|
|
// Schedule renderLayout() if user has been scrolling, otherwise
|
|
// run it right away
|
|
var RENDER_DELAY = 200; // in ms
|
|
var self = this;
|
|
if (Date.now() - PDFView.lastScroll > RENDER_DELAY) {
|
|
// Render right away
|
|
this.renderLayer();
|
|
} else {
|
|
// Schedule
|
|
if (this.renderTimer)
|
|
clearTimeout(this.renderTimer);
|
|
this.renderTimer = setTimeout(function() {
|
|
self.setupRenderLayoutTimer();
|
|
}, RENDER_DELAY);
|
|
}
|
|
};
|
|
|
|
this.appendText = function textLayerBuilderAppendText(geom) {
|
|
var textDiv = document.createElement('div');
|
|
|
|
// vScale and hScale already contain the scaling to pixel units
|
|
var fontHeight = geom.fontSize * geom.vScale;
|
|
textDiv.dataset.canvasWidth = geom.canvasWidth * geom.hScale;
|
|
textDiv.dataset.fontName = geom.fontName;
|
|
|
|
textDiv.style.fontSize = fontHeight + 'px';
|
|
textDiv.style.fontFamily = geom.fontFamily;
|
|
textDiv.style.left = geom.x + 'px';
|
|
textDiv.style.top = (geom.y - fontHeight) + 'px';
|
|
|
|
// The content of the div is set in the `setTextContent` function.
|
|
|
|
this.textDivs.push(textDiv);
|
|
};
|
|
|
|
this.insertDivContent = function textLayerUpdateTextContent() {
|
|
// Only set the content of the divs once layout has finished, the content
|
|
// for the divs is available and content is not yet set on the divs.
|
|
if (!this.layoutDone || this.divContentDone || !this.textContent)
|
|
return;
|
|
|
|
this.divContentDone = true;
|
|
|
|
var textDivs = this.textDivs;
|
|
var bidiTexts = this.textContent.bidiTexts;
|
|
|
|
for (var i = 0; i < bidiTexts.length; i++) {
|
|
var bidiText = bidiTexts[i];
|
|
var textDiv = textDivs[i];
|
|
|
|
textDiv.textContent = bidiText.str;
|
|
textDiv.dir = bidiText.ltr ? 'ltr' : 'rtl';
|
|
}
|
|
|
|
this.setupRenderLayoutTimer();
|
|
};
|
|
|
|
this.setTextContent = function textLayerBuilderSetTextContent(textContent) {
|
|
this.textContent = textContent;
|
|
this.insertDivContent();
|
|
};
|
|
|
|
this.convertMatches = function textLayerBuilderConvertMatches(matches) {
|
|
var i = 0;
|
|
var iIndex = 0;
|
|
var bidiTexts = this.textContent.bidiTexts;
|
|
var end = bidiTexts.length - 1;
|
|
var queryLen = PDFFindController.state.query.length;
|
|
|
|
var lastDivIdx = -1;
|
|
var pos;
|
|
|
|
var ret = [];
|
|
|
|
// Loop over all the matches.
|
|
for (var m = 0; m < matches.length; m++) {
|
|
var matchIdx = matches[m];
|
|
// # Calculate the begin position.
|
|
|
|
// Loop over the divIdxs.
|
|
while (i !== end && matchIdx >= (iIndex + bidiTexts[i].str.length)) {
|
|
iIndex += bidiTexts[i].str.length;
|
|
i++;
|
|
}
|
|
|
|
// TODO: Do proper handling here if something goes wrong.
|
|
if (i == bidiTexts.length) {
|
|
console.error('Could not find matching mapping');
|
|
}
|
|
|
|
var match = {
|
|
begin: {
|
|
divIdx: i,
|
|
offset: matchIdx - iIndex
|
|
}
|
|
};
|
|
|
|
// # Calculate the end position.
|
|
matchIdx += queryLen;
|
|
|
|
// Somewhat same array as above, but use a > 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;
|
|
};
|
|
|
|
this.renderMatches = function textLayerBuilder_renderMatches(matches) {
|
|
// Early exit if there is nothing to render.
|
|
if (matches.length === 0) {
|
|
return;
|
|
}
|
|
|
|
var bidiTexts = this.textContent.bidiTexts;
|
|
var textDivs = this.textDivs;
|
|
var prevEnd = null;
|
|
var isSelectedPage = this.pageIdx === PDFFindController.selected.pageIdx;
|
|
var selectedMatchIdx = PDFFindController.selected.matchIdx;
|
|
var highlightAll = PDFFindController.state.highlightAll;
|
|
|
|
var infty = {
|
|
divIdx: -1,
|
|
offset: undefined
|
|
};
|
|
|
|
function beginText(begin, className) {
|
|
var divIdx = begin.divIdx;
|
|
var div = textDivs[divIdx];
|
|
div.textContent = '';
|
|
|
|
var content = bidiTexts[divIdx].str.substring(0, begin.offset);
|
|
var node = document.createTextNode(content);
|
|
if (className) {
|
|
var isSelected = isSelectedPage &&
|
|
divIdx === selectedMatchIdx;
|
|
var span = document.createElement('span');
|
|
span.className = className + (isSelected ? ' selected' : '');
|
|
span.appendChild(node);
|
|
div.appendChild(span);
|
|
return;
|
|
}
|
|
div.appendChild(node);
|
|
}
|
|
|
|
function appendText(from, to, className) {
|
|
var divIdx = from.divIdx;
|
|
var div = textDivs[divIdx];
|
|
|
|
var content = bidiTexts[divIdx].str.substring(from.offset, to.offset);
|
|
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);
|
|
}
|
|
|
|
function highlightDiv(divIdx, className) {
|
|
textDivs[divIdx].className = className;
|
|
}
|
|
|
|
var i0 = selectedMatchIdx, i1 = i0 + 1, i;
|
|
|
|
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 (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 (isSelected)
|
|
scrollIntoView(textDivs[begin.divIdx], {top: -50});
|
|
|
|
// 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) {
|
|
appendText(prevEnd, infty);
|
|
}
|
|
// clears the divs and set the content until the begin point.
|
|
beginText(begin);
|
|
} else {
|
|
appendText(prevEnd, begin);
|
|
}
|
|
|
|
if (begin.divIdx === end.divIdx) {
|
|
appendText(begin, end, 'highlight' + highlightSuffix);
|
|
} else {
|
|
appendText(begin, infty, 'highlight begin' + highlightSuffix);
|
|
for (var n = begin.divIdx + 1; n < end.divIdx; n++) {
|
|
highlightDiv(n, 'highlight middle' + highlightSuffix);
|
|
}
|
|
beginText(end, 'highlight end' + highlightSuffix);
|
|
}
|
|
prevEnd = end;
|
|
}
|
|
|
|
if (prevEnd) {
|
|
appendText(prevEnd, infty);
|
|
}
|
|
};
|
|
|
|
this.updateMatches = function textLayerUpdateMatches() {
|
|
// Only show matches, once all rendering is done.
|
|
if (!this.renderingDone)
|
|
return;
|
|
|
|
// Clear out all matches.
|
|
var matches = this.matches;
|
|
var textDivs = this.textDivs;
|
|
var bidiTexts = this.textContent.bidiTexts;
|
|
var clearedUntilDivIdx = -1;
|
|
|
|
// Clear out all current matches.
|
|
for (var i = 0; i < matches.length; i++) {
|
|
var match = matches[i];
|
|
var begin = Math.max(clearedUntilDivIdx, match.begin.divIdx);
|
|
for (var n = begin; n <= match.end.divIdx; n++) {
|
|
var div = textDivs[n];
|
|
div.textContent = bidiTexts[n].str;
|
|
div.className = '';
|
|
}
|
|
clearedUntilDivIdx = match.end.divIdx + 1;
|
|
}
|
|
|
|
if (!PDFFindController.active)
|
|
return;
|
|
|
|
// Convert the matches on the page controller into the match format used
|
|
// for the textLayer.
|
|
this.matches = matches =
|
|
this.convertMatches(PDFFindController.pageMatches[this.pageIdx] || []);
|
|
|
|
this.renderMatches(this.matches);
|
|
};
|
|
};
|
|
|
|
document.addEventListener('DOMContentLoaded', function webViewerLoad(evt) {
|
|
PDFView.initialize();
|
|
var params = PDFView.parseQueryString(document.location.search.substring(1));
|
|
|
|
var file = params.file || DEFAULT_URL;
|
|
|
|
//hide unused elements
|
|
document.getElementById('openFile').setAttribute('hidden', 'true');
|
|
document.getElementById('viewBookmark').setAttribute('hidden', 'true');
|
|
document.getElementById('print').setAttribute('hidden', 'true');
|
|
|
|
if (!window.File || !window.FileReader || !window.FileList || !window.Blob) {
|
|
document.getElementById('openFile').setAttribute('hidden', 'true');
|
|
} else {
|
|
document.getElementById('fileInput').value = null;
|
|
}
|
|
|
|
// Special debugging flags in the hash section of the URL.
|
|
var hash = document.location.hash.substring(1);
|
|
var hashParams = PDFView.parseQueryString(hash);
|
|
|
|
if ('disableWorker' in hashParams)
|
|
PDFJS.disableWorker = (hashParams['disableWorker'] === 'true');
|
|
|
|
var locale = navigator.language;
|
|
if ('locale' in hashParams)
|
|
locale = hashParams['locale'];
|
|
mozL10n.setLanguage(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 (!PDFView.supportsPrinting) {
|
|
document.getElementById('print').classList.add('hidden');
|
|
}
|
|
|
|
if (!PDFView.supportsFullscreen) {
|
|
document.getElementById('fullscreen').classList.add('hidden');
|
|
}
|
|
|
|
if (PDFView.supportsIntegratedFind) {
|
|
document.querySelector('#viewFind').classList.add('hidden');
|
|
}
|
|
|
|
// Listen for warnings to trigger the fallback UI. Errors should be caught
|
|
// and call PDFView.error() so we don't need to listen for those.
|
|
PDFJS.LogManager.addLogger({
|
|
warn: function() {
|
|
PDFView.fallback();
|
|
}
|
|
});
|
|
|
|
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');
|
|
PDFView.sidebarOpen = outerContainer.classList.contains('sidebarOpen');
|
|
PDFView.renderHighestPriority();
|
|
});
|
|
|
|
document.getElementById('viewThumbnail').addEventListener('click',
|
|
function() {
|
|
PDFView.switchSidebarView('thumbs');
|
|
});
|
|
|
|
document.getElementById('viewOutline').addEventListener('click',
|
|
function() {
|
|
PDFView.switchSidebarView('outline');
|
|
});
|
|
|
|
document.getElementById('previous').addEventListener('click',
|
|
function() {
|
|
PDFView.page--;
|
|
});
|
|
|
|
document.getElementById('next').addEventListener('click',
|
|
function() {
|
|
PDFView.page++;
|
|
});
|
|
|
|
document.querySelector('.zoomIn').addEventListener('click',
|
|
function() {
|
|
PDFView.zoomIn();
|
|
});
|
|
|
|
document.querySelector('.zoomOut').addEventListener('click',
|
|
function() {
|
|
PDFView.zoomOut();
|
|
});
|
|
|
|
document.getElementById('fullscreen').addEventListener('click',
|
|
function() {
|
|
PDFView.fullscreen();
|
|
});
|
|
|
|
document.getElementById('openFile').addEventListener('click',
|
|
function() {
|
|
document.getElementById('fileInput').click();
|
|
});
|
|
|
|
document.getElementById('print').addEventListener('click',
|
|
function() {
|
|
window.print();
|
|
});
|
|
|
|
document.getElementById('download').addEventListener('click',
|
|
function() {
|
|
PDFView.download();
|
|
});
|
|
|
|
document.getElementById('pageNumber').addEventListener('click',
|
|
function() {
|
|
this.select();
|
|
});
|
|
|
|
document.getElementById('pageNumber').addEventListener('change',
|
|
function() {
|
|
// Handle the user inputting a floating point number.
|
|
PDFView.page = (this.value | 0);
|
|
|
|
if (this.value !== (this.value | 0).toString()) {
|
|
this.value = PDFView.page;
|
|
}
|
|
});
|
|
|
|
document.getElementById('scaleSelect').addEventListener('change',
|
|
function() {
|
|
PDFView.parseScale(this.value);
|
|
});
|
|
|
|
document.getElementById('first_page').addEventListener('click',
|
|
function() {
|
|
PDFView.page = 1;
|
|
});
|
|
|
|
document.getElementById('last_page').addEventListener('click',
|
|
function() {
|
|
PDFView.page = PDFView.pdfDocument.numPages;
|
|
});
|
|
|
|
document.getElementById('page_rotate_ccw').addEventListener('click',
|
|
function() {
|
|
PDFView.rotatePages(-90);
|
|
});
|
|
|
|
document.getElementById('page_rotate_cw').addEventListener('click',
|
|
function() {
|
|
PDFView.rotatePages(90);
|
|
});
|
|
|
|
|
|
PDFView.open(file, 0);
|
|
}, true);
|
|
|
|
function updateViewarea() {
|
|
|
|
if (!PDFView.initialized)
|
|
return;
|
|
var visible = PDFView.getVisiblePages();
|
|
var visiblePages = visible.views;
|
|
if (visiblePages.length === 0) {
|
|
return;
|
|
}
|
|
|
|
PDFView.renderHighestPriority();
|
|
|
|
var currentId = PDFView.page;
|
|
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 === PDFView.page) {
|
|
stillFullyVisible = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!stillFullyVisible) {
|
|
currentId = visiblePages[0].id;
|
|
}
|
|
|
|
if (!PDFView.isFullscreen) {
|
|
updateViewarea.inProgress = true; // used in "set page"
|
|
PDFView.page = currentId;
|
|
updateViewarea.inProgress = false;
|
|
}
|
|
|
|
var currentScale = PDFView.currentScale;
|
|
var currentScaleValue = PDFView.currentScaleValue;
|
|
var normalizedScaleValue = currentScaleValue == currentScale ?
|
|
currentScale * 100 : currentScaleValue;
|
|
|
|
var pageNumber = firstPage.id;
|
|
var pdfOpenParams = '#page=' + pageNumber;
|
|
pdfOpenParams += '&zoom=' + normalizedScaleValue;
|
|
var currentPage = PDFView.pages[pageNumber - 1];
|
|
var topLeft = currentPage.getPagePoint(PDFView.container.scrollLeft,
|
|
(PDFView.container.scrollTop - firstPage.y));
|
|
pdfOpenParams += ',' + Math.round(topLeft[0]) + ',' + Math.round(topLeft[1]);
|
|
|
|
var store = PDFView.store;
|
|
store.initializedPromise.then(function() {
|
|
store.set('exists', true);
|
|
store.set('page', pageNumber);
|
|
store.set('zoom', normalizedScaleValue);
|
|
store.set('scrollLeft', Math.round(topLeft[0]));
|
|
store.set('scrollTop', Math.round(topLeft[1]));
|
|
});
|
|
var href = PDFView.getAnchorUrl(pdfOpenParams);
|
|
document.getElementById('viewBookmark').href = href;
|
|
document.location.hash = '#page=' + pageNumber;
|
|
}
|
|
|
|
window.addEventListener('resize', function webViewerResize(evt) {
|
|
if (PDFView.initialized &&
|
|
(document.getElementById('pageWidthOption').selected ||
|
|
document.getElementById('pageFitOption').selected ||
|
|
document.getElementById('pageAutoOption').selected))
|
|
PDFView.parseScale(document.getElementById('scaleSelect').value);
|
|
updateViewarea();
|
|
});
|
|
|
|
window.addEventListener('hashchange', function webViewerHashchange(evt) {
|
|
PDFView.setHash(document.location.hash.substring(1));
|
|
});
|
|
|
|
window.addEventListener('change', function webViewerChange(evt) {
|
|
var files = evt.target.files;
|
|
if (!files || files.length === 0)
|
|
return;
|
|
|
|
// 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);
|
|
PDFView.open(uint8Array, 0);
|
|
};
|
|
|
|
var file = files[0];
|
|
fileReader.readAsArrayBuffer(file);
|
|
PDFView.setTitleUsingUrl(file.name);
|
|
|
|
// URL does not reflect proper document location - hiding some icons.
|
|
document.getElementById('viewBookmark').setAttribute('hidden', 'true');
|
|
document.getElementById('download').setAttribute('hidden', 'true');
|
|
}, true);
|
|
|
|
function selectScaleOption(value) {
|
|
var options = document.getElementById('scaleSelect').options;
|
|
var predefinedValueFound = false;
|
|
for (var i = 0; i < options.length; 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();
|
|
|
|
// Adjust the width of the zoom box to fit the content.
|
|
var container = document.getElementById('scaleSelectContainer');
|
|
var select = document.getElementById('scaleSelect');
|
|
|
|
select.setAttribute('style', 'min-width: inherit;');
|
|
var width = select.clientWidth + 8;
|
|
container.setAttribute('style', 'min-width: ' + width + 'px; ' +
|
|
'max-width: ' + width + 'px;');
|
|
select.setAttribute('style', 'min-width: ' + (width + 20) + 'px;');
|
|
}, true);
|
|
|
|
window.addEventListener('scalechange', function scalechange(evt) {
|
|
var customScaleOption = document.getElementById('customScaleOption');
|
|
customScaleOption.selected = false;
|
|
|
|
if (!evt.resetAutoSettings &&
|
|
(document.getElementById('pageWidthOption').selected ||
|
|
document.getElementById('pageFitOption').selected ||
|
|
document.getElementById('pageAutoOption').selected)) {
|
|
updateViewarea();
|
|
return;
|
|
}
|
|
|
|
var predefinedValueFound = selectScaleOption('' + evt.scale);
|
|
if (!predefinedValueFound) {
|
|
customScaleOption.textContent = Math.round(evt.scale * 10000) / 100 + '%';
|
|
customScaleOption.selected = true;
|
|
}
|
|
|
|
updateViewarea();
|
|
}, true);
|
|
|
|
window.addEventListener('pagechange', function pagechange(evt) {
|
|
var page = evt.pageNumber;
|
|
if (PDFView.previousPageNumber !== page) {
|
|
document.getElementById('pageNumber').value = page;
|
|
var selected = document.querySelector('.thumbnail.selected');
|
|
if (selected)
|
|
selected.classList.remove('selected');
|
|
|
|
var thumbnail = document.getElementById('thumbnailContainer' + page);
|
|
// FIXME(mack): remove checking if thumbnail is null hack
|
|
if (thumbnail) {
|
|
thumbnail.classList.add('selected');
|
|
var visibleThumbs = PDFView.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);
|
|
}
|
|
}
|
|
|
|
}
|
|
document.getElementById('previous').disabled = (page <= 1);
|
|
document.getElementById('next').disabled = (page >= PDFView.pages.length);
|
|
}, true);
|
|
|
|
// Firefox specific event, so that we can prevent browser from zooming
|
|
window.addEventListener('DOMMouseScroll', function(evt) {
|
|
if (evt.ctrlKey) {
|
|
evt.preventDefault();
|
|
|
|
var ticks = evt.detail;
|
|
var direction = (ticks > 0) ? 'zoomOut' : 'zoomIn';
|
|
for (var i = 0, length = Math.abs(ticks); i < length; i++)
|
|
PDFView[direction]();
|
|
} else if (PDFView.isFullscreen) {
|
|
var FIREFOX_DELTA_FACTOR = -40;
|
|
PDFView.mouseScroll(evt.detail * FIREFOX_DELTA_FACTOR);
|
|
}
|
|
}, false);
|
|
|
|
window.addEventListener('mousemove', function keydown(evt) {
|
|
if (PDFView.isFullscreen) {
|
|
PDFView.showPresentationControls();
|
|
}
|
|
}, false);
|
|
|
|
window.addEventListener('mousedown', function mousedown(evt) {
|
|
if (PDFView.isFullscreen && evt.button === 0) {
|
|
// Mouse click in fullmode advances a page
|
|
evt.preventDefault();
|
|
|
|
PDFView.page++;
|
|
}
|
|
}, false);
|
|
|
|
window.addEventListener('keydown', function keydown(evt) {
|
|
var handled = false;
|
|
var cmd = (evt.ctrlKey ? 1 : 0) |
|
|
(evt.altKey ? 2 : 0) |
|
|
(evt.shiftKey ? 4 : 0) |
|
|
(evt.metaKey ? 8 : 0);
|
|
|
|
// First, handle the key bindings that are independent whether an input
|
|
// control is selected or not.
|
|
if (cmd == 1 || cmd == 8) { // either CTRL or META key.
|
|
switch (evt.keyCode) {
|
|
case 70:
|
|
if (!PDFView.supportsIntegratedFind) {
|
|
PDFFindBar.toggle();
|
|
handled = true;
|
|
}
|
|
break;
|
|
case 61: // FF/Mac '='
|
|
case 107: // FF '+' and '='
|
|
case 187: // Chrome '+'
|
|
case 171: // FF with German keyboard
|
|
PDFView.zoomIn();
|
|
handled = true;
|
|
break;
|
|
case 173: // FF/Mac '-'
|
|
case 109: // FF '-'
|
|
case 189: // Chrome '-'
|
|
PDFView.zoomOut();
|
|
handled = true;
|
|
break;
|
|
case 48: // '0'
|
|
case 96: // '0' on Numpad of Swedish keyboard
|
|
PDFView.parseScale(DEFAULT_SCALE, true);
|
|
handled = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// CTRL or META with or without SHIFT.
|
|
if (cmd == 1 || cmd == 8 || cmd == 5 || cmd == 12) {
|
|
switch (evt.keyCode) {
|
|
case 71: // g
|
|
if (!PDFView.supportsIntegratedFind) {
|
|
PDFFindBar.dispatchEvent('again', cmd == 5 || cmd == 12);
|
|
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;
|
|
if (curElement && (curElement.tagName == 'INPUT' ||
|
|
curElement.tagName == 'SELECT')) {
|
|
return;
|
|
}
|
|
var controlsElement = document.getElementById('toolbar');
|
|
while (curElement) {
|
|
if (curElement === controlsElement && !PDFView.isFullscreen)
|
|
return; // ignoring if the 'toolbar' element is focused
|
|
curElement = curElement.parentNode;
|
|
}
|
|
|
|
if (cmd === 0) { // no control key pressed at all.
|
|
switch (evt.keyCode) {
|
|
case 38: // up arrow
|
|
case 33: // pg up
|
|
case 8: // backspace
|
|
if (!PDFView.isFullscreen && PDFView.currentScaleValue !== 'page-fit') {
|
|
break;
|
|
}
|
|
/* in fullscreen mode */
|
|
/* falls through */
|
|
case 37: // left arrow
|
|
// horizontal scrolling using arrow keys
|
|
if (PDFView.isHorizontalScrollbarEnabled) {
|
|
break;
|
|
}
|
|
/* falls through */
|
|
case 75: // 'k'
|
|
case 80: // 'p'
|
|
PDFView.page--;
|
|
handled = true;
|
|
break;
|
|
case 40: // down arrow
|
|
case 34: // pg down
|
|
case 32: // spacebar
|
|
if (!PDFView.isFullscreen && PDFView.currentScaleValue !== 'page-fit') {
|
|
break;
|
|
}
|
|
/* falls through */
|
|
case 39: // right arrow
|
|
// horizontal scrolling using arrow keys
|
|
if (PDFView.isHorizontalScrollbarEnabled) {
|
|
break;
|
|
}
|
|
/* falls through */
|
|
case 74: // 'j'
|
|
case 78: // 'n'
|
|
PDFView.page++;
|
|
handled = true;
|
|
break;
|
|
|
|
case 36: // home
|
|
if (PDFView.isFullscreen) {
|
|
PDFView.page = 1;
|
|
handled = true;
|
|
}
|
|
break;
|
|
case 35: // end
|
|
if (PDFView.isFullscreen) {
|
|
PDFView.page = PDFView.pdfDocument.numPages;
|
|
handled = true;
|
|
}
|
|
break;
|
|
|
|
case 82: // 'r'
|
|
PDFView.rotatePages(90);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (cmd == 4) { // shift-key
|
|
switch (evt.keyCode) {
|
|
case 82: // 'r'
|
|
PDFView.rotatePages(-90);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (handled) {
|
|
evt.preventDefault();
|
|
PDFView.clearMouseScrollState();
|
|
}
|
|
});
|
|
|
|
window.addEventListener('beforeprint', function beforePrint(evt) {
|
|
PDFView.beforePrint();
|
|
});
|
|
|
|
window.addEventListener('afterprint', function afterPrint(evt) {
|
|
PDFView.afterPrint();
|
|
});
|
|
|
|
(function fullscreenClosure() {
|
|
function fullscreenChange(e) {
|
|
var isFullscreen = document.fullscreenElement || document.mozFullScreen ||
|
|
document.webkitIsFullScreen;
|
|
|
|
if (!isFullscreen) {
|
|
PDFView.exitFullscreen();
|
|
}
|
|
}
|
|
|
|
window.addEventListener('fullscreenchange', fullscreenChange, false);
|
|
window.addEventListener('mozfullscreenchange', fullscreenChange, false);
|
|
window.addEventListener('webkitfullscreenchange', fullscreenChange, false);
|
|
})();
|
|
|
|
(function animationStartedClosure() {
|
|
// The offsetParent is not set until the pdf.js iframe or object is visible.
|
|
// Waiting for first animation.
|
|
var requestAnimationFrame = window.requestAnimationFrame ||
|
|
window.mozRequestAnimationFrame ||
|
|
window.webkitRequestAnimationFrame ||
|
|
window.oRequestAnimationFrame ||
|
|
window.msRequestAnimationFrame ||
|
|
function startAtOnce(callback) { callback(); };
|
|
PDFView.animationStartedPromise = new PDFJS.Promise();
|
|
requestAnimationFrame(function onAnimationFrame() {
|
|
PDFView.animationStartedPromise.resolve();
|
|
});
|
|
})();
|
|
|
|
|