- |
-
-
+ |
+
|
{{ Former::text('product_key')->useDatalist(Product::getProductKeys($products), 'key')->onkeyup('onChange()')
@@ -80,7 +87,7 @@
|
|
-
+ |
|
@@ -145,7 +152,8 @@
-
+
+
@@ -245,10 +253,11 @@
var $input = $('select#client');
$input.combobox();
- $('.client_select input.form-control').on('change', function(e) {
+ $('.client_select input.form-control').on('change', function(e) {
refreshPDF();
- }).on('keydown', function() {
- $('#modalLink').text('Create new client');
+ if ($('input[name=client]').val() != '-1') {
+ $('#modalLink').text('Create new client');
+ }
});
//enableHoverClick($('.combobox-container input.form-control'), $('.combobox-container input[name=client]'), '{{ URL::to('clients') }}');
@@ -280,7 +289,6 @@
});
function showCreateNew() {
- console.log('showCreateNew: %s', $('input[name=client]').val());
if ($('input[name=client]').val() != '-1') {
$('#myModal input').val('');
$('#myModal #country_id').val('');
@@ -340,8 +348,7 @@
};
var clientId = $('input[name=client]').val();
- console.log('clientId: %s', clientId);
- console.log('mapped: %s', clientMap[clientId]);
+
if (clientId == '-1') {
var client = {
name: $('#name').val(),
@@ -378,11 +385,46 @@
}, 100);
}
+
+ var BASE64_MARKER = ';base64,';
+ function convertDataURIToBinary(dataURI) {
+ var base64Index = dataURI.indexOf(BASE64_MARKER) + BASE64_MARKER.length;
+ var base64 = dataURI.substring(base64Index);
+ var raw = window.atob(base64);
+ var rawLength = raw.length;
+ var array = new Uint8Array(new ArrayBuffer(rawLength));
+
+ for(i = 0; i < rawLength; i++) {
+ array[i] = raw.charCodeAt(i);
+ }
+ return array;
+ }
+
+
function _refreshPDF() {
var invoice = createInvoiceModel();
var doc = generatePDF(invoice);
- var string = doc.output('datauristring');
- $('iframe').attr('src', string);
+ var string = doc.output('dataurlstring');
+
+ //console.log(string);
+ var pdfAsArray = convertDataURIToBinary(string);
+ PDFJS.getDocument(pdfAsArray).then(function getPdfHelloWorld(pdf) {
+
+ pdf.getPage(1).then(function getPageHelloWorld(page) {
+ var scale = 1.5;
+ var viewport = page.getViewport(scale);
+
+ var canvas = document.getElementById('the-canvas');
+ var context = canvas.getContext('2d');
+ canvas.height = viewport.height;
+ canvas.width = viewport.width;
+
+ page.render({canvasContext: context, viewport: viewport});
+ });
+ });
+
+
+ //$('iframe').attr('src', string);
}
function onDownloadClick() {
@@ -415,6 +457,7 @@
if (!name) {
if (!name) $('#nameError').css( "display", "inline" );
} else {
+ $('select#client').combobox('setSelected');
$('input[name=client]').val('-1');
$('.client_select input.form-control').val(name);
$('.client_select').addClass('combobox-selected');
@@ -422,7 +465,7 @@
$('#nameError').css( "display", "none" );
$('#modalLink').text('Edit client details');
$('#myModal').modal('hide');
- $('input#invoice_number').focus();
+ $('.client_select input.form-control').focus();
//$('[name="client_combobox"]').focus();
refreshPDF();
@@ -525,7 +568,7 @@
this.rawTotal = ko.computed(function() {
var cost = parseFloat(self.cost());
- var qty = parseInt(self.qty());
+ var qty = parseFloat(self.qty());
var tax = parseFloat(self.tax());
var value = cost * qty;
if (self.tax() > 0) {
diff --git a/app/views/payments/edit.blade.php b/app/views/payments/edit.blade.php
index 3424054ed7..cafb31ef8f 100755
--- a/app/views/payments/edit.blade.php
+++ b/app/views/payments/edit.blade.php
@@ -9,7 +9,8 @@
{{ Former::open($url)->addClass('col-md-10 col-md-offset-1 main_form')->method($method)->rules(array(
- 'amount' => 'required'
+ 'client' => 'required',
+ 'amount' => 'required',
)); }}
@if ($payment)
@@ -105,7 +106,6 @@
}
$('select#invoice').combobox('refresh');
}).trigger('change');
- //enableHoverClick($('.client-select input.form-control'), $('input[name=client]'), '{{ URL::to('clients') }}');
$input.combobox();
var $input = $('select#invoice').on('change', function(e) {
@@ -113,11 +113,9 @@
var invoiceId = $('input[name=invoice]').val();
if (invoiceId) {
var client = clientMap[invoiceId];
- setComboboxValue($('.client-select'), client.public_id, client.name);
- //setComboboxValue($('select#client'), client.public_id, client.name);
+ setComboboxValue($('.client-select'), client.public_id, client.name);
}
});
- //enableHoverClick($('.invoice-select input.form-control'), $('input[name=invoice]'), '{{ URL::to('invoices') }}');
$input.combobox();
$('#payment_date').datepicker({
diff --git a/public/js/bootstrap-combobox.js b/public/js/bootstrap-combobox.js
index d46eb80a1a..f8cd79d329 100755
--- a/public/js/bootstrap-combobox.js
+++ b/public/js/bootstrap-combobox.js
@@ -96,6 +96,10 @@
this.$source.removeAttr('required');
}
+ , setSelected: function() {
+ this.selected = true;
+ }
+
, select: function () {
var val = this.$menu.find('.active').attr('data-value');
this.$element.val(this.updater(val)).trigger('change');
diff --git a/public/js/compatibility.js b/public/js/compatibility.js
new file mode 100755
index 0000000000..8ca68137fb
--- /dev/null
+++ b/public/js/compatibility.js
@@ -0,0 +1,483 @@
+/* -*- 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 VBArray, PDFJS */
+
+'use strict';
+
+// Initializing PDFJS global object here, it case if we need to change/disable
+// some PDF.js features, e.g. range requests
+if (typeof PDFJS === 'undefined') {
+ (typeof window !== 'undefined' ? window : this).PDFJS = {};
+}
+
+// Checking if the typed arrays are supported
+(function checkTypedArrayCompatibility() {
+ if (typeof Uint8Array !== 'undefined') {
+ // some mobile versions do not support subarray (e.g. safari 5 / iOS)
+ if (typeof Uint8Array.prototype.subarray === 'undefined') {
+ Uint8Array.prototype.subarray = function subarray(start, end) {
+ return new Uint8Array(this.slice(start, end));
+ };
+ Float32Array.prototype.subarray = function subarray(start, end) {
+ return new Float32Array(this.slice(start, end));
+ };
+ }
+
+ // some mobile version might not support Float64Array
+ if (typeof Float64Array === 'undefined')
+ window.Float64Array = Float32Array;
+
+ return;
+ }
+
+ function subarray(start, end) {
+ return new TypedArray(this.slice(start, end));
+ }
+
+ function setArrayOffset(array, offset) {
+ if (arguments.length < 2)
+ offset = 0;
+ for (var i = 0, n = array.length; i < n; ++i, ++offset)
+ this[offset] = array[i] & 0xFF;
+ }
+
+ function TypedArray(arg1) {
+ var result;
+ if (typeof arg1 === 'number') {
+ result = [];
+ for (var i = 0; i < arg1; ++i)
+ result[i] = 0;
+ } else if ('slice' in arg1) {
+ result = arg1.slice(0);
+ } else {
+ result = [];
+ for (var i = 0, n = arg1.length; i < n; ++i) {
+ result[i] = arg1[i];
+ }
+ }
+
+ result.subarray = subarray;
+ result.buffer = result;
+ result.byteLength = result.length;
+ result.set = setArrayOffset;
+
+ if (typeof arg1 === 'object' && arg1.buffer)
+ result.buffer = arg1.buffer;
+
+ return result;
+ }
+
+ window.Uint8Array = TypedArray;
+
+ // we don't need support for set, byteLength for 32-bit array
+ // so we can use the TypedArray as well
+ window.Uint32Array = TypedArray;
+ window.Int32Array = TypedArray;
+ window.Uint16Array = TypedArray;
+ window.Float32Array = TypedArray;
+ window.Float64Array = TypedArray;
+})();
+
+// URL = URL || webkitURL
+(function normalizeURLObject() {
+ if (!window.URL) {
+ window.URL = window.webkitURL;
+ }
+})();
+
+// Object.create() ?
+(function checkObjectCreateCompatibility() {
+ if (typeof Object.create !== 'undefined')
+ return;
+
+ Object.create = function objectCreate(proto) {
+ function Constructor() {}
+ Constructor.prototype = proto;
+ return new Constructor();
+ };
+})();
+
+// Object.defineProperty() ?
+(function checkObjectDefinePropertyCompatibility() {
+ if (typeof Object.defineProperty !== 'undefined') {
+ var definePropertyPossible = true;
+ try {
+ // some browsers (e.g. safari) cannot use defineProperty() on DOM objects
+ // and thus the native version is not sufficient
+ Object.defineProperty(new Image(), 'id', { value: 'test' });
+ // ... another test for android gb browser for non-DOM objects
+ var Test = function Test() {};
+ Test.prototype = { get id() { } };
+ Object.defineProperty(new Test(), 'id',
+ { value: '', configurable: true, enumerable: true, writable: false });
+ } catch (e) {
+ definePropertyPossible = false;
+ }
+ if (definePropertyPossible) return;
+ }
+
+ Object.defineProperty = function objectDefineProperty(obj, name, def) {
+ delete obj[name];
+ if ('get' in def)
+ obj.__defineGetter__(name, def['get']);
+ if ('set' in def)
+ obj.__defineSetter__(name, def['set']);
+ if ('value' in def) {
+ obj.__defineSetter__(name, function objectDefinePropertySetter(value) {
+ this.__defineGetter__(name, function objectDefinePropertyGetter() {
+ return value;
+ });
+ return value;
+ });
+ obj[name] = def.value;
+ }
+ };
+})();
+
+// Object.keys() ?
+(function checkObjectKeysCompatibility() {
+ if (typeof Object.keys !== 'undefined')
+ return;
+
+ Object.keys = function objectKeys(obj) {
+ var result = [];
+ for (var i in obj) {
+ if (obj.hasOwnProperty(i))
+ result.push(i);
+ }
+ return result;
+ };
+})();
+
+// No readAsArrayBuffer ?
+(function checkFileReaderReadAsArrayBuffer() {
+ if (typeof FileReader === 'undefined')
+ return; // FileReader is not implemented
+ var frPrototype = FileReader.prototype;
+ // Older versions of Firefox might not have readAsArrayBuffer
+ if ('readAsArrayBuffer' in frPrototype)
+ return; // readAsArrayBuffer is implemented
+ Object.defineProperty(frPrototype, 'readAsArrayBuffer', {
+ value: function fileReaderReadAsArrayBuffer(blob) {
+ var fileReader = new FileReader();
+ var originalReader = this;
+ fileReader.onload = function fileReaderOnload(evt) {
+ var data = evt.target.result;
+ var buffer = new ArrayBuffer(data.length);
+ var uint8Array = new Uint8Array(buffer);
+
+ for (var i = 0, ii = data.length; i < ii; i++)
+ uint8Array[i] = data.charCodeAt(i);
+
+ Object.defineProperty(originalReader, 'result', {
+ value: buffer,
+ enumerable: true,
+ writable: false,
+ configurable: true
+ });
+
+ var event = document.createEvent('HTMLEvents');
+ event.initEvent('load', false, false);
+ originalReader.dispatchEvent(event);
+ };
+ fileReader.readAsBinaryString(blob);
+ }
+ });
+})();
+
+// No XMLHttpRequest.response ?
+(function checkXMLHttpRequestResponseCompatibility() {
+ var xhrPrototype = XMLHttpRequest.prototype;
+ if (!('overrideMimeType' in xhrPrototype)) {
+ // IE10 might have response, but not overrideMimeType
+ Object.defineProperty(xhrPrototype, 'overrideMimeType', {
+ value: function xmlHttpRequestOverrideMimeType(mimeType) {}
+ });
+ }
+ if ('response' in xhrPrototype ||
+ 'mozResponseArrayBuffer' in xhrPrototype ||
+ 'mozResponse' in xhrPrototype ||
+ 'responseArrayBuffer' in xhrPrototype)
+ return;
+ // IE9 ?
+ if (typeof VBArray !== 'undefined') {
+ Object.defineProperty(xhrPrototype, 'response', {
+ get: function xmlHttpRequestResponseGet() {
+ return new Uint8Array(new VBArray(this.responseBody).toArray());
+ }
+ });
+ return;
+ }
+
+ // other browsers
+ function responseTypeSetter() {
+ // will be only called to set "arraybuffer"
+ this.overrideMimeType('text/plain; charset=x-user-defined');
+ }
+ if (typeof xhrPrototype.overrideMimeType === 'function') {
+ Object.defineProperty(xhrPrototype, 'responseType',
+ { set: responseTypeSetter });
+ }
+ function responseGetter() {
+ var text = this.responseText;
+ var i, n = text.length;
+ var result = new Uint8Array(n);
+ for (i = 0; i < n; ++i)
+ result[i] = text.charCodeAt(i) & 0xFF;
+ return result;
+ }
+ Object.defineProperty(xhrPrototype, 'response', { get: responseGetter });
+})();
+
+// window.btoa (base64 encode function) ?
+(function checkWindowBtoaCompatibility() {
+ if ('btoa' in window)
+ return;
+
+ var digits =
+ 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+
+ window.btoa = function windowBtoa(chars) {
+ var buffer = '';
+ var i, n;
+ for (i = 0, n = chars.length; i < n; i += 3) {
+ var b1 = chars.charCodeAt(i) & 0xFF;
+ var b2 = chars.charCodeAt(i + 1) & 0xFF;
+ var b3 = chars.charCodeAt(i + 2) & 0xFF;
+ var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4);
+ var d3 = i + 1 < n ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64;
+ var d4 = i + 2 < n ? (b3 & 0x3F) : 64;
+ buffer += (digits.charAt(d1) + digits.charAt(d2) +
+ digits.charAt(d3) + digits.charAt(d4));
+ }
+ return buffer;
+ };
+})();
+
+// window.atob (base64 encode function) ?
+(function checkWindowAtobCompatibility() {
+ if ('atob' in window)
+ return;
+
+ // https://github.com/davidchambers/Base64.js
+ var digits =
+ 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+ window.atob = function (input) {
+ input = input.replace(/=+$/, '');
+ if (input.length % 4 == 1) throw new Error('bad atob input');
+ for (
+ // initialize result and counters
+ var bc = 0, bs, buffer, idx = 0, output = '';
+ // get next character
+ buffer = input.charAt(idx++);
+ // character found in table?
+ // initialize bit storage and add its ascii value
+ ~buffer && (bs = bc % 4 ? bs * 64 + buffer : buffer,
+ // and if not first of each 4 characters,
+ // convert the first 8 bits to one ascii character
+ bc++ % 4) ? output += String.fromCharCode(255 & bs >> (-2 * bc & 6)) : 0
+ ) {
+ // try to find character in table (0-63, not found => -1)
+ buffer = digits.indexOf(buffer);
+ }
+ return output;
+ };
+})();
+
+// Function.prototype.bind ?
+(function checkFunctionPrototypeBindCompatibility() {
+ if (typeof Function.prototype.bind !== 'undefined')
+ return;
+
+ Function.prototype.bind = function functionPrototypeBind(obj) {
+ var fn = this, headArgs = Array.prototype.slice.call(arguments, 1);
+ var bound = function functionPrototypeBindBound() {
+ var args = Array.prototype.concat.apply(headArgs, arguments);
+ return fn.apply(obj, args);
+ };
+ return bound;
+ };
+})();
+
+// HTMLElement dataset property
+(function checkDatasetProperty() {
+ var div = document.createElement('div');
+ if ('dataset' in div)
+ return; // dataset property exists
+
+ Object.defineProperty(HTMLElement.prototype, 'dataset', {
+ get: function() {
+ if (this._dataset)
+ return this._dataset;
+
+ var dataset = {};
+ for (var j = 0, jj = this.attributes.length; j < jj; j++) {
+ var attribute = this.attributes[j];
+ if (attribute.name.substring(0, 5) != 'data-')
+ continue;
+ var key = attribute.name.substring(5).replace(/\-([a-z])/g,
+ function(all, ch) { return ch.toUpperCase(); });
+ dataset[key] = attribute.value;
+ }
+
+ Object.defineProperty(this, '_dataset', {
+ value: dataset,
+ writable: false,
+ enumerable: false
+ });
+ return dataset;
+ },
+ enumerable: true
+ });
+})();
+
+// HTMLElement classList property
+(function checkClassListProperty() {
+ var div = document.createElement('div');
+ if ('classList' in div)
+ return; // classList property exists
+
+ function changeList(element, itemName, add, remove) {
+ var s = element.className || '';
+ var list = s.split(/\s+/g);
+ if (list[0] === '') list.shift();
+ var index = list.indexOf(itemName);
+ if (index < 0 && add)
+ list.push(itemName);
+ if (index >= 0 && remove)
+ list.splice(index, 1);
+ element.className = list.join(' ');
+ return (index >= 0);
+ }
+
+ var classListPrototype = {
+ add: function(name) {
+ changeList(this.element, name, true, false);
+ },
+ contains: function(name) {
+ return changeList(this.element, name, false, false);
+ },
+ remove: function(name) {
+ changeList(this.element, name, false, true);
+ },
+ toggle: function(name) {
+ changeList(this.element, name, true, true);
+ }
+ };
+
+ Object.defineProperty(HTMLElement.prototype, 'classList', {
+ get: function() {
+ if (this._classList)
+ return this._classList;
+
+ var classList = Object.create(classListPrototype, {
+ element: {
+ value: this,
+ writable: false,
+ enumerable: true
+ }
+ });
+ Object.defineProperty(this, '_classList', {
+ value: classList,
+ writable: false,
+ enumerable: false
+ });
+ return classList;
+ },
+ enumerable: true
+ });
+})();
+
+// Check console compatibility
+(function checkConsoleCompatibility() {
+ if (!('console' in window)) {
+ window.console = {
+ log: function() {},
+ error: function() {},
+ warn: function() {}
+ };
+ } else if (!('bind' in console.log)) {
+ // native functions in IE9 might not have bind
+ console.log = (function(fn) {
+ return function(msg) { return fn(msg); };
+ })(console.log);
+ console.error = (function(fn) {
+ return function(msg) { return fn(msg); };
+ })(console.error);
+ console.warn = (function(fn) {
+ return function(msg) { return fn(msg); };
+ })(console.warn);
+ }
+})();
+
+// Check onclick compatibility in Opera
+(function checkOnClickCompatibility() {
+ // workaround for reported Opera bug DSK-354448:
+ // onclick fires on disabled buttons with opaque content
+ function ignoreIfTargetDisabled(event) {
+ if (isDisabled(event.target)) {
+ event.stopPropagation();
+ }
+ }
+ function isDisabled(node) {
+ return node.disabled || (node.parentNode && isDisabled(node.parentNode));
+ }
+ if (navigator.userAgent.indexOf('Opera') != -1) {
+ // use browser detection since we cannot feature-check this bug
+ document.addEventListener('click', ignoreIfTargetDisabled, true);
+ }
+})();
+
+// Checks if navigator.language is supported
+(function checkNavigatorLanguage() {
+ if ('language' in navigator)
+ return;
+ Object.defineProperty(navigator, 'language', {
+ get: function navigatorLanguage() {
+ var language = navigator.userLanguage || 'en-US';
+ return language.substring(0, 2).toLowerCase() +
+ language.substring(2).toUpperCase();
+ },
+ enumerable: true
+ });
+})();
+
+(function checkRangeRequests() {
+ // Safari has issues with cached range requests see:
+ // https://github.com/mozilla/pdf.js/issues/3260
+ // Last tested with version 6.0.4.
+ var isSafari = Object.prototype.toString.call(
+ window.HTMLElement).indexOf('Constructor') > 0;
+
+ // Older versions of Android (pre 3.0) has issues with range requests, see:
+ // https://github.com/mozilla/pdf.js/issues/3381.
+ // Make sure that we only match webkit-based Android browsers,
+ // since Firefox/Fennec works as expected.
+ var regex = /Android\s[0-2][^\d]/;
+ var isOldAndroid = regex.test(navigator.userAgent);
+
+ if (isSafari || isOldAndroid) {
+ PDFJS.disableRange = true;
+ }
+})();
+
+// Check if the browser supports manipulation of the history.
+(function checkHistoryManipulation() {
+ if (!window.history.pushState) {
+ PDFJS.disableHistory = true;
+ }
+})();
diff --git a/public/js/pdf.js b/public/js/pdf.js
new file mode 100755
index 0000000000..e185b51e84
--- /dev/null
+++ b/public/js/pdf.js
@@ -0,0 +1,49 @@
+/* -*- 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.
+ */
+
+// Initializing PDFJS global object (if still undefined)
+if (typeof PDFJS === 'undefined') {
+ (typeof window !== 'undefined' ? window : this).PDFJS = {};
+}
+
+//#if BUNDLE_VERSION
+//#expand PDFJS.version = '__BUNDLE_VERSION__';
+//#endif
+//#if BUNDLE_BUILD
+//#expand PDFJS.build = '__BUNDLE_BUILD__';
+//#endif
+
+(function pdfjsWrapper() {
+ // Use strict in our context only - users might not want it
+ 'use strict';
+
+//#expand __BUNDLE__
+
+}).call((typeof window === 'undefined') ? this : window);
+
+//#if !(MOZCENTRAL || FIREFOX)
+if (!PDFJS.workerSrc && typeof document !== 'undefined') {
+ // workerSrc is not set -- using last script url to define default location
+ PDFJS.workerSrc = (function () {
+ 'use strict';
+ var scriptTagContainer = document.body ||
+ document.getElementsByTagName('head')[0];
+ var pdfjsSrc = scriptTagContainer.lastChild.src;
+ return pdfjsSrc && pdfjsSrc.replace(/\.js$/i, '.worker.js');
+ })();
+}
+//#endif
diff --git a/public/js/pdf_viewer.js b/public/js/pdf_viewer.js
new file mode 100755
index 0000000000..c4971c964c
--- /dev/null
+++ b/public/js/pdf_viewer.js
@@ -0,0 +1,7420 @@
+/* -*- 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.
+ */
+
+// Initializing PDFJS global object (if still undefined)
+if (typeof PDFJS === 'undefined') {
+ (typeof window !== 'undefined' ? window : this).PDFJS = {};
+}
+
+PDFJS.version = '0.8.765';
+PDFJS.build = '88ec2bd';
+
+(function pdfjsWrapper() {
+ // Use strict in our context only - users might not want it
+ 'use strict';
+
+/* -*- 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 Cmd, ColorSpace, Dict, MozBlobBuilder, Name, PDFJS, Ref, URL */
+
+'use strict';
+
+var globalScope = (typeof window === 'undefined') ? this : window;
+
+var isWorker = (typeof window == 'undefined');
+
+var ERRORS = 0, WARNINGS = 1, INFOS = 5;
+var verbosity = WARNINGS;
+
+var FONT_IDENTITY_MATRIX = [0.001, 0, 0, 0.001, 0, 0];
+
+var TextRenderingMode = {
+ FILL: 0,
+ STROKE: 1,
+ FILL_STROKE: 2,
+ INVISIBLE: 3,
+ FILL_ADD_TO_PATH: 4,
+ STROKE_ADD_TO_PATH: 5,
+ FILL_STROKE_ADD_TO_PATH: 6,
+ ADD_TO_PATH: 7,
+ FILL_STROKE_MASK: 3,
+ ADD_TO_PATH_FLAG: 4
+};
+
+// The global PDFJS object exposes the API
+// In production, it will be declared outside a global wrapper
+// In development, it will be declared here
+if (!globalScope.PDFJS) {
+ globalScope.PDFJS = {};
+}
+
+globalScope.PDFJS.pdfBug = false;
+
+// All the possible operations for an operator list.
+var OPS = PDFJS.OPS = {
+ // Intentionally start from 1 so it is easy to spot bad operators that will be
+ // 0's.
+ dependency: 1,
+ setLineWidth: 2,
+ setLineCap: 3,
+ setLineJoin: 4,
+ setMiterLimit: 5,
+ setDash: 6,
+ setRenderingIntent: 7,
+ setFlatness: 8,
+ setGState: 9,
+ save: 10,
+ restore: 11,
+ transform: 12,
+ moveTo: 13,
+ lineTo: 14,
+ curveTo: 15,
+ curveTo2: 16,
+ curveTo3: 17,
+ closePath: 18,
+ rectangle: 19,
+ stroke: 20,
+ closeStroke: 21,
+ fill: 22,
+ eoFill: 23,
+ fillStroke: 24,
+ eoFillStroke: 25,
+ closeFillStroke: 26,
+ closeEOFillStroke: 27,
+ endPath: 28,
+ clip: 29,
+ eoClip: 30,
+ beginText: 31,
+ endText: 32,
+ setCharSpacing: 33,
+ setWordSpacing: 34,
+ setHScale: 35,
+ setLeading: 36,
+ setFont: 37,
+ setTextRenderingMode: 38,
+ setTextRise: 39,
+ moveText: 40,
+ setLeadingMoveText: 41,
+ setTextMatrix: 42,
+ nextLine: 43,
+ showText: 44,
+ showSpacedText: 45,
+ nextLineShowText: 46,
+ nextLineSetSpacingShowText: 47,
+ setCharWidth: 48,
+ setCharWidthAndBounds: 49,
+ setStrokeColorSpace: 50,
+ setFillColorSpace: 51,
+ setStrokeColor: 52,
+ setStrokeColorN: 53,
+ setFillColor: 54,
+ setFillColorN: 55,
+ setStrokeGray: 56,
+ setFillGray: 57,
+ setStrokeRGBColor: 58,
+ setFillRGBColor: 59,
+ setStrokeCMYKColor: 60,
+ setFillCMYKColor: 61,
+ shadingFill: 62,
+ beginInlineImage: 63,
+ beginImageData: 64,
+ endInlineImage: 65,
+ paintXObject: 66,
+ markPoint: 67,
+ markPointProps: 68,
+ beginMarkedContent: 69,
+ beginMarkedContentProps: 70,
+ endMarkedContent: 71,
+ beginCompat: 72,
+ endCompat: 73,
+ paintFormXObjectBegin: 74,
+ paintFormXObjectEnd: 75,
+ beginGroup: 76,
+ endGroup: 77,
+ beginAnnotations: 78,
+ endAnnotations: 79,
+ beginAnnotation: 80,
+ endAnnotation: 81,
+ paintJpegXObject: 82,
+ paintImageMaskXObject: 83,
+ paintImageMaskXObjectGroup: 84,
+ paintImageXObject: 85,
+ paintInlineImageXObject: 86,
+ paintInlineImageXObjectGroup: 87
+};
+
+// Use only for debugging purposes. This should not be used in any code that is
+// in mozilla master.
+var log = (function() {
+ if ('console' in globalScope && 'log' in globalScope['console']) {
+ return globalScope['console']['log'].bind(globalScope['console']);
+ } else {
+ return function nop() {
+ };
+ }
+})();
+
+// A notice for devs that will not trigger the fallback UI. These are good
+// for things that are helpful to devs, such as warning that Workers were
+// disabled, which is important to devs but not end users.
+function info(msg) {
+ if (verbosity >= INFOS) {
+ log('Info: ' + msg);
+ PDFJS.LogManager.notify('info', msg);
+ }
+}
+
+// Non-fatal warnings that should trigger the fallback UI.
+function warn(msg) {
+ if (verbosity >= WARNINGS) {
+ log('Warning: ' + msg);
+ PDFJS.LogManager.notify('warn', msg);
+ }
+}
+
+// Fatal errors that should trigger the fallback UI and halt execution by
+// throwing an exception.
+function error(msg) {
+ // If multiple arguments were passed, pass them all to the log function.
+ if (arguments.length > 1) {
+ var logArguments = ['Error:'];
+ logArguments.push.apply(logArguments, arguments);
+ log.apply(null, logArguments);
+ // Join the arguments into a single string for the lines below.
+ msg = [].join.call(arguments, ' ');
+ } else {
+ log('Error: ' + msg);
+ }
+ log(backtrace());
+ PDFJS.LogManager.notify('error', msg);
+ throw new Error(msg);
+}
+
+// Missing features that should trigger the fallback UI.
+function TODO(what) {
+ warn('TODO: ' + what);
+}
+
+function backtrace() {
+ try {
+ throw new Error();
+ } catch (e) {
+ return e.stack ? e.stack.split('\n').slice(2).join('\n') : '';
+ }
+}
+
+function assert(cond, msg) {
+ if (!cond)
+ error(msg);
+}
+
+// Combines two URLs. The baseUrl shall be absolute URL. If the url is an
+// absolute URL, it will be returned as is.
+function combineUrl(baseUrl, url) {
+ if (!url)
+ return baseUrl;
+ if (url.indexOf(':') >= 0)
+ return url;
+ if (url.charAt(0) == '/') {
+ // absolute path
+ var i = baseUrl.indexOf('://');
+ i = baseUrl.indexOf('/', i + 3);
+ return baseUrl.substring(0, i) + url;
+ } else {
+ // relative path
+ var pathLength = baseUrl.length, i;
+ i = baseUrl.lastIndexOf('#');
+ pathLength = i >= 0 ? i : pathLength;
+ i = baseUrl.lastIndexOf('?', pathLength);
+ pathLength = i >= 0 ? i : pathLength;
+ var prefixLength = baseUrl.lastIndexOf('/', pathLength);
+ return baseUrl.substring(0, prefixLength + 1) + url;
+ }
+}
+
+// Validates if URL is safe and allowed, e.g. to avoid XSS.
+function isValidUrl(url, allowRelative) {
+ if (!url) {
+ return false;
+ }
+ var colon = url.indexOf(':');
+ if (colon < 0) {
+ return allowRelative;
+ }
+ var protocol = url.substr(0, colon);
+ switch (protocol) {
+ case 'http':
+ case 'https':
+ case 'ftp':
+ case 'mailto':
+ return true;
+ default:
+ return false;
+ }
+}
+PDFJS.isValidUrl = isValidUrl;
+
+// In a well-formed PDF, |cond| holds. If it doesn't, subsequent
+// behavior is undefined.
+function assertWellFormed(cond, msg) {
+ if (!cond)
+ error(msg);
+}
+
+var LogManager = PDFJS.LogManager = (function LogManagerClosure() {
+ var loggers = [];
+ return {
+ addLogger: function logManager_addLogger(logger) {
+ loggers.push(logger);
+ },
+ notify: function(type, message) {
+ for (var i = 0, ii = loggers.length; i < ii; i++) {
+ var logger = loggers[i];
+ if (logger[type])
+ logger[type](message);
+ }
+ }
+ };
+})();
+
+function shadow(obj, prop, value) {
+ Object.defineProperty(obj, prop, { value: value,
+ enumerable: true,
+ configurable: true,
+ writable: false });
+ return value;
+}
+
+var PasswordResponses = PDFJS.PasswordResponses = {
+ NEED_PASSWORD: 1,
+ INCORRECT_PASSWORD: 2
+};
+
+var PasswordException = (function PasswordExceptionClosure() {
+ function PasswordException(msg, code) {
+ this.name = 'PasswordException';
+ this.message = msg;
+ this.code = code;
+ }
+
+ PasswordException.prototype = new Error();
+ PasswordException.constructor = PasswordException;
+
+ return PasswordException;
+})();
+
+var UnknownErrorException = (function UnknownErrorExceptionClosure() {
+ function UnknownErrorException(msg, details) {
+ this.name = 'UnknownErrorException';
+ this.message = msg;
+ this.details = details;
+ }
+
+ UnknownErrorException.prototype = new Error();
+ UnknownErrorException.constructor = UnknownErrorException;
+
+ return UnknownErrorException;
+})();
+
+var InvalidPDFException = (function InvalidPDFExceptionClosure() {
+ function InvalidPDFException(msg) {
+ this.name = 'InvalidPDFException';
+ this.message = msg;
+ }
+
+ InvalidPDFException.prototype = new Error();
+ InvalidPDFException.constructor = InvalidPDFException;
+
+ return InvalidPDFException;
+})();
+
+var MissingPDFException = (function MissingPDFExceptionClosure() {
+ function MissingPDFException(msg) {
+ this.name = 'MissingPDFException';
+ this.message = msg;
+ }
+
+ MissingPDFException.prototype = new Error();
+ MissingPDFException.constructor = MissingPDFException;
+
+ return MissingPDFException;
+})();
+
+var NotImplementedException = (function NotImplementedExceptionClosure() {
+ function NotImplementedException(msg) {
+ this.message = msg;
+ }
+
+ NotImplementedException.prototype = new Error();
+ NotImplementedException.prototype.name = 'NotImplementedException';
+ NotImplementedException.constructor = NotImplementedException;
+
+ return NotImplementedException;
+})();
+
+var MissingDataException = (function MissingDataExceptionClosure() {
+ function MissingDataException(begin, end) {
+ this.begin = begin;
+ this.end = end;
+ this.message = 'Missing data [' + begin + ', ' + end + ')';
+ }
+
+ MissingDataException.prototype = new Error();
+ MissingDataException.prototype.name = 'MissingDataException';
+ MissingDataException.constructor = MissingDataException;
+
+ return MissingDataException;
+})();
+
+var XRefParseException = (function XRefParseExceptionClosure() {
+ function XRefParseException(msg) {
+ this.message = msg;
+ }
+
+ XRefParseException.prototype = new Error();
+ XRefParseException.prototype.name = 'XRefParseException';
+ XRefParseException.constructor = XRefParseException;
+
+ return XRefParseException;
+})();
+
+
+function bytesToString(bytes) {
+ var str = '';
+ var length = bytes.length;
+ for (var n = 0; n < length; ++n)
+ str += String.fromCharCode(bytes[n]);
+ return str;
+}
+
+function stringToBytes(str) {
+ var length = str.length;
+ var bytes = new Uint8Array(length);
+ for (var n = 0; n < length; ++n)
+ bytes[n] = str.charCodeAt(n) & 0xFF;
+ return bytes;
+}
+
+var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
+
+var Util = PDFJS.Util = (function UtilClosure() {
+ function Util() {}
+
+ Util.makeCssRgb = function Util_makeCssRgb(rgb) {
+ return 'rgb(' + rgb[0] + ',' + rgb[1] + ',' + rgb[2] + ')';
+ };
+
+ Util.makeCssCmyk = function Util_makeCssCmyk(cmyk) {
+ var rgb = ColorSpace.singletons.cmyk.getRgb(cmyk, 0);
+ return Util.makeCssRgb(rgb);
+ };
+
+ // Concatenates two transformation matrices together and returns the result.
+ Util.transform = function Util_transform(m1, m2) {
+ return [
+ m1[0] * m2[0] + m1[2] * m2[1],
+ m1[1] * m2[0] + m1[3] * m2[1],
+ m1[0] * m2[2] + m1[2] * m2[3],
+ m1[1] * m2[2] + m1[3] * m2[3],
+ m1[0] * m2[4] + m1[2] * m2[5] + m1[4],
+ m1[1] * m2[4] + m1[3] * m2[5] + m1[5]
+ ];
+ };
+
+ // For 2d affine transforms
+ Util.applyTransform = function Util_applyTransform(p, m) {
+ var xt = p[0] * m[0] + p[1] * m[2] + m[4];
+ var yt = p[0] * m[1] + p[1] * m[3] + m[5];
+ return [xt, yt];
+ };
+
+ Util.applyInverseTransform = function Util_applyInverseTransform(p, m) {
+ var d = m[0] * m[3] - m[1] * m[2];
+ var xt = (p[0] * m[3] - p[1] * m[2] + m[2] * m[5] - m[4] * m[3]) / d;
+ var yt = (-p[0] * m[1] + p[1] * m[0] + m[4] * m[1] - m[5] * m[0]) / d;
+ return [xt, yt];
+ };
+
+ // Applies the transform to the rectangle and finds the minimum axially
+ // aligned bounding box.
+ Util.getAxialAlignedBoundingBox =
+ function Util_getAxialAlignedBoundingBox(r, m) {
+
+ var p1 = Util.applyTransform(r, m);
+ var p2 = Util.applyTransform(r.slice(2, 4), m);
+ var p3 = Util.applyTransform([r[0], r[3]], m);
+ var p4 = Util.applyTransform([r[2], r[1]], m);
+ return [
+ Math.min(p1[0], p2[0], p3[0], p4[0]),
+ Math.min(p1[1], p2[1], p3[1], p4[1]),
+ Math.max(p1[0], p2[0], p3[0], p4[0]),
+ Math.max(p1[1], p2[1], p3[1], p4[1])
+ ];
+ };
+
+ Util.inverseTransform = function Util_inverseTransform(m) {
+ var d = m[0] * m[3] - m[1] * m[2];
+ return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d,
+ (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d];
+ };
+
+ // Apply a generic 3d matrix M on a 3-vector v:
+ // | a b c | | X |
+ // | d e f | x | Y |
+ // | g h i | | Z |
+ // M is assumed to be serialized as [a,b,c,d,e,f,g,h,i],
+ // with v as [X,Y,Z]
+ Util.apply3dTransform = function Util_apply3dTransform(m, v) {
+ return [
+ m[0] * v[0] + m[1] * v[1] + m[2] * v[2],
+ m[3] * v[0] + m[4] * v[1] + m[5] * v[2],
+ m[6] * v[0] + m[7] * v[1] + m[8] * v[2]
+ ];
+ };
+
+ // This calculation uses Singular Value Decomposition.
+ // The SVD can be represented with formula A = USV. We are interested in the
+ // matrix S here because it represents the scale values.
+ Util.singularValueDecompose2dScale =
+ function Util_singularValueDecompose2dScale(m) {
+
+ var transpose = [m[0], m[2], m[1], m[3]];
+
+ // Multiply matrix m with its transpose.
+ var a = m[0] * transpose[0] + m[1] * transpose[2];
+ var b = m[0] * transpose[1] + m[1] * transpose[3];
+ var c = m[2] * transpose[0] + m[3] * transpose[2];
+ var d = m[2] * transpose[1] + m[3] * transpose[3];
+
+ // Solve the second degree polynomial to get roots.
+ var first = (a + d) / 2;
+ var second = Math.sqrt((a + d) * (a + d) - 4 * (a * d - c * b)) / 2;
+ var sx = first + second || 1;
+ var sy = first - second || 1;
+
+ // Scale values are the square roots of the eigenvalues.
+ return [Math.sqrt(sx), Math.sqrt(sy)];
+ };
+
+ // Normalize rectangle rect=[x1, y1, x2, y2] so that (x1,y1) < (x2,y2)
+ // For coordinate systems whose origin lies in the bottom-left, this
+ // means normalization to (BL,TR) ordering. For systems with origin in the
+ // top-left, this means (TL,BR) ordering.
+ Util.normalizeRect = function Util_normalizeRect(rect) {
+ var r = rect.slice(0); // clone rect
+ if (rect[0] > rect[2]) {
+ r[0] = rect[2];
+ r[2] = rect[0];
+ }
+ if (rect[1] > rect[3]) {
+ r[1] = rect[3];
+ r[3] = rect[1];
+ }
+ return r;
+ };
+
+ // Returns a rectangle [x1, y1, x2, y2] corresponding to the
+ // intersection of rect1 and rect2. If no intersection, returns 'false'
+ // The rectangle coordinates of rect1, rect2 should be [x1, y1, x2, y2]
+ Util.intersect = function Util_intersect(rect1, rect2) {
+ function compare(a, b) {
+ return a - b;
+ }
+
+ // Order points along the axes
+ var orderedX = [rect1[0], rect1[2], rect2[0], rect2[2]].sort(compare),
+ orderedY = [rect1[1], rect1[3], rect2[1], rect2[3]].sort(compare),
+ result = [];
+
+ rect1 = Util.normalizeRect(rect1);
+ rect2 = Util.normalizeRect(rect2);
+
+ // X: first and second points belong to different rectangles?
+ if ((orderedX[0] === rect1[0] && orderedX[1] === rect2[0]) ||
+ (orderedX[0] === rect2[0] && orderedX[1] === rect1[0])) {
+ // Intersection must be between second and third points
+ result[0] = orderedX[1];
+ result[2] = orderedX[2];
+ } else {
+ return false;
+ }
+
+ // Y: first and second points belong to different rectangles?
+ if ((orderedY[0] === rect1[1] && orderedY[1] === rect2[1]) ||
+ (orderedY[0] === rect2[1] && orderedY[1] === rect1[1])) {
+ // Intersection must be between second and third points
+ result[1] = orderedY[1];
+ result[3] = orderedY[2];
+ } else {
+ return false;
+ }
+
+ return result;
+ };
+
+ Util.sign = function Util_sign(num) {
+ return num < 0 ? -1 : 1;
+ };
+
+ // TODO(mack): Rename appendToArray
+ Util.concatenateToArray = function concatenateToArray(arr1, arr2) {
+ Array.prototype.push.apply(arr1, arr2);
+ };
+
+ Util.prependToArray = function concatenateToArray(arr1, arr2) {
+ Array.prototype.unshift.apply(arr1, arr2);
+ };
+
+ Util.extendObj = function extendObj(obj1, obj2) {
+ for (var key in obj2) {
+ obj1[key] = obj2[key];
+ }
+ };
+
+ Util.getInheritableProperty = function Util_getInheritableProperty(dict,
+ name) {
+ while (dict && !dict.has(name)) {
+ dict = dict.get('Parent');
+ }
+ if (!dict) {
+ return null;
+ }
+ return dict.get(name);
+ };
+
+ Util.inherit = function Util_inherit(sub, base, prototype) {
+ sub.prototype = Object.create(base.prototype);
+ sub.prototype.constructor = sub;
+ for (var prop in prototype) {
+ sub.prototype[prop] = prototype[prop];
+ }
+ };
+
+ Util.loadScript = function Util_loadScript(src, callback) {
+ var script = document.createElement('script');
+ var loaded = false;
+ script.setAttribute('src', src);
+ if (callback) {
+ script.onload = function() {
+ if (!loaded) {
+ callback();
+ }
+ loaded = true;
+ };
+ }
+ document.getElementsByTagName('head')[0].appendChild(script);
+ };
+
+ return Util;
+})();
+
+var PageViewport = PDFJS.PageViewport = (function PageViewportClosure() {
+ function PageViewport(viewBox, scale, rotation, offsetX, offsetY, dontFlip) {
+ this.viewBox = viewBox;
+ this.scale = scale;
+ this.rotation = rotation;
+ this.offsetX = offsetX;
+ this.offsetY = offsetY;
+
+ // creating transform to convert pdf coordinate system to the normal
+ // canvas like coordinates taking in account scale and rotation
+ var centerX = (viewBox[2] + viewBox[0]) / 2;
+ var centerY = (viewBox[3] + viewBox[1]) / 2;
+ var rotateA, rotateB, rotateC, rotateD;
+ rotation = rotation % 360;
+ rotation = rotation < 0 ? rotation + 360 : rotation;
+ switch (rotation) {
+ case 180:
+ rotateA = -1; rotateB = 0; rotateC = 0; rotateD = 1;
+ break;
+ case 90:
+ rotateA = 0; rotateB = 1; rotateC = 1; rotateD = 0;
+ break;
+ case 270:
+ rotateA = 0; rotateB = -1; rotateC = -1; rotateD = 0;
+ break;
+ //case 0:
+ default:
+ rotateA = 1; rotateB = 0; rotateC = 0; rotateD = -1;
+ break;
+ }
+
+ if (dontFlip) {
+ rotateC = -rotateC; rotateD = -rotateD;
+ }
+
+ var offsetCanvasX, offsetCanvasY;
+ var width, height;
+ if (rotateA === 0) {
+ offsetCanvasX = Math.abs(centerY - viewBox[1]) * scale + offsetX;
+ offsetCanvasY = Math.abs(centerX - viewBox[0]) * scale + offsetY;
+ width = Math.abs(viewBox[3] - viewBox[1]) * scale;
+ height = Math.abs(viewBox[2] - viewBox[0]) * scale;
+ } else {
+ offsetCanvasX = Math.abs(centerX - viewBox[0]) * scale + offsetX;
+ offsetCanvasY = Math.abs(centerY - viewBox[1]) * scale + offsetY;
+ width = Math.abs(viewBox[2] - viewBox[0]) * scale;
+ height = Math.abs(viewBox[3] - viewBox[1]) * scale;
+ }
+ // creating transform for the following operations:
+ // translate(-centerX, -centerY), rotate and flip vertically,
+ // scale, and translate(offsetCanvasX, offsetCanvasY)
+ this.transform = [
+ rotateA * scale,
+ rotateB * scale,
+ rotateC * scale,
+ rotateD * scale,
+ offsetCanvasX - rotateA * scale * centerX - rotateC * scale * centerY,
+ offsetCanvasY - rotateB * scale * centerX - rotateD * scale * centerY
+ ];
+
+ this.width = width;
+ this.height = height;
+ this.fontScale = scale;
+ }
+ PageViewport.prototype = {
+ clone: function PageViewPort_clone(args) {
+ args = args || {};
+ var scale = 'scale' in args ? args.scale : this.scale;
+ var rotation = 'rotation' in args ? args.rotation : this.rotation;
+ return new PageViewport(this.viewBox.slice(), scale, rotation,
+ this.offsetX, this.offsetY, args.dontFlip);
+ },
+ convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) {
+ return Util.applyTransform([x, y], this.transform);
+ },
+ convertToViewportRectangle:
+ function PageViewport_convertToViewportRectangle(rect) {
+ var tl = Util.applyTransform([rect[0], rect[1]], this.transform);
+ var br = Util.applyTransform([rect[2], rect[3]], this.transform);
+ return [tl[0], tl[1], br[0], br[1]];
+ },
+ convertToPdfPoint: function PageViewport_convertToPdfPoint(x, y) {
+ return Util.applyInverseTransform([x, y], this.transform);
+ }
+ };
+ return PageViewport;
+})();
+
+var PDFStringTranslateTable = [
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0x2D8, 0x2C7, 0x2C6, 0x2D9, 0x2DD, 0x2DB, 0x2DA, 0x2DC, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2022, 0x2020, 0x2021, 0x2026, 0x2014,
+ 0x2013, 0x192, 0x2044, 0x2039, 0x203A, 0x2212, 0x2030, 0x201E, 0x201C,
+ 0x201D, 0x2018, 0x2019, 0x201A, 0x2122, 0xFB01, 0xFB02, 0x141, 0x152, 0x160,
+ 0x178, 0x17D, 0x131, 0x142, 0x153, 0x161, 0x17E, 0, 0x20AC
+];
+
+function stringToPDFString(str) {
+ var i, n = str.length, str2 = '';
+ if (str[0] === '\xFE' && str[1] === '\xFF') {
+ // UTF16BE BOM
+ for (i = 2; i < n; i += 2)
+ str2 += String.fromCharCode(
+ (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1));
+ } else {
+ for (i = 0; i < n; ++i) {
+ var code = PDFStringTranslateTable[str.charCodeAt(i)];
+ str2 += code ? String.fromCharCode(code) : str.charAt(i);
+ }
+ }
+ return str2;
+}
+
+function stringToUTF8String(str) {
+ return decodeURIComponent(escape(str));
+}
+
+function isEmptyObj(obj) {
+ for (var key in obj) {
+ return false;
+ }
+ return true;
+}
+
+function isBool(v) {
+ return typeof v == 'boolean';
+}
+
+function isInt(v) {
+ return typeof v == 'number' && ((v | 0) == v);
+}
+
+function isNum(v) {
+ return typeof v == 'number';
+}
+
+function isString(v) {
+ return typeof v == 'string';
+}
+
+function isNull(v) {
+ return v === null;
+}
+
+function isName(v) {
+ return v instanceof Name;
+}
+
+function isCmd(v, cmd) {
+ return v instanceof Cmd && (!cmd || v.cmd == cmd);
+}
+
+function isDict(v, type) {
+ if (!(v instanceof Dict)) {
+ return false;
+ }
+ if (!type) {
+ return true;
+ }
+ var dictType = v.get('Type');
+ return isName(dictType) && dictType.name == type;
+}
+
+function isArray(v) {
+ return v instanceof Array;
+}
+
+function isStream(v) {
+ return typeof v == 'object' && v !== null && v !== undefined &&
+ ('getBytes' in v);
+}
+
+function isArrayBuffer(v) {
+ return typeof v == 'object' && v !== null && v !== undefined &&
+ ('byteLength' in v);
+}
+
+function isRef(v) {
+ return v instanceof Ref;
+}
+
+function isPDFFunction(v) {
+ var fnDict;
+ if (typeof v != 'object')
+ return false;
+ else if (isDict(v))
+ fnDict = v;
+ else if (isStream(v))
+ fnDict = v.dict;
+ else
+ return false;
+ return fnDict.has('FunctionType');
+}
+
+/**
+ * The following promise implementation tries to generally implment the
+ * Promise/A+ spec. Some notable differences from other promise libaries are:
+ * - There currently isn't a seperate deferred and promise object.
+ * - Unhandled rejections eventually show an error if they aren't handled.
+ *
+ * Based off of the work in:
+ * https://bugzilla.mozilla.org/show_bug.cgi?id=810490
+ */
+var Promise = PDFJS.Promise = (function PromiseClosure() {
+ var STATUS_PENDING = 0;
+ var STATUS_RESOLVED = 1;
+ var STATUS_REJECTED = 2;
+
+ // In an attempt to avoid silent exceptions, unhandled rejections are
+ // tracked and if they aren't handled in a certain amount of time an
+ // error is logged.
+ var REJECTION_TIMEOUT = 500;
+
+ var HandlerManager = {
+ handlers: [],
+ running: false,
+ unhandledRejections: [],
+ pendingRejectionCheck: false,
+
+ scheduleHandlers: function scheduleHandlers(promise) {
+ if (promise._status == STATUS_PENDING) {
+ return;
+ }
+
+ this.handlers = this.handlers.concat(promise._handlers);
+ promise._handlers = [];
+
+ if (this.running) {
+ return;
+ }
+ this.running = true;
+
+ setTimeout(this.runHandlers.bind(this), 0);
+ },
+
+ runHandlers: function runHandlers() {
+ while (this.handlers.length > 0) {
+ var handler = this.handlers.shift();
+
+ var nextStatus = handler.thisPromise._status;
+ var nextValue = handler.thisPromise._value;
+
+ try {
+ if (nextStatus === STATUS_RESOLVED) {
+ if (typeof(handler.onResolve) == 'function') {
+ nextValue = handler.onResolve(nextValue);
+ }
+ } else if (typeof(handler.onReject) === 'function') {
+ nextValue = handler.onReject(nextValue);
+ nextStatus = STATUS_RESOLVED;
+
+ if (handler.thisPromise._unhandledRejection) {
+ this.removeUnhandeledRejection(handler.thisPromise);
+ }
+ }
+ } catch (ex) {
+ nextStatus = STATUS_REJECTED;
+ nextValue = ex;
+ }
+
+ handler.nextPromise._updateStatus(nextStatus, nextValue);
+ }
+
+ this.running = false;
+ },
+
+ addUnhandledRejection: function addUnhandledRejection(promise) {
+ this.unhandledRejections.push({
+ promise: promise,
+ time: Date.now()
+ });
+ this.scheduleRejectionCheck();
+ },
+
+ removeUnhandeledRejection: function removeUnhandeledRejection(promise) {
+ promise._unhandledRejection = false;
+ for (var i = 0; i < this.unhandledRejections.length; i++) {
+ if (this.unhandledRejections[i].promise === promise) {
+ this.unhandledRejections.splice(i);
+ i--;
+ }
+ }
+ },
+
+ scheduleRejectionCheck: function scheduleRejectionCheck() {
+ if (this.pendingRejectionCheck) {
+ return;
+ }
+ this.pendingRejectionCheck = true;
+ setTimeout(function rejectionCheck() {
+ this.pendingRejectionCheck = false;
+ var now = Date.now();
+ for (var i = 0; i < this.unhandledRejections.length; i++) {
+ if (now - this.unhandledRejections[i].time > REJECTION_TIMEOUT) {
+ var unhandled = this.unhandledRejections[i].promise._value;
+ var msg = 'Unhandled rejection: ' + unhandled;
+ if (unhandled.stack) {
+ msg += '\n' + unhandled.stack;
+ }
+ warn(msg);
+ this.unhandledRejections.splice(i);
+ i--;
+ }
+ }
+ if (this.unhandledRejections.length) {
+ this.scheduleRejectionCheck();
+ }
+ }.bind(this), REJECTION_TIMEOUT);
+ }
+ };
+
+ function Promise() {
+ this._status = STATUS_PENDING;
+ this._handlers = [];
+ }
+ /**
+ * Builds a promise that is resolved when all the passed in promises are
+ * resolved.
+ * @param {array} array of data and/or promises to wait for.
+ * @return {Promise} New dependant promise.
+ */
+ Promise.all = function Promise_all(promises) {
+ var deferred = new Promise();
+ var unresolved = promises.length;
+ var results = [];
+ if (unresolved === 0) {
+ deferred.resolve(results);
+ return deferred;
+ }
+ function reject(reason) {
+ if (deferred._status === STATUS_REJECTED) {
+ return;
+ }
+ results = [];
+ deferred.reject(reason);
+ }
+ for (var i = 0, ii = promises.length; i < ii; ++i) {
+ var promise = promises[i];
+ var resolve = (function(i) {
+ return function(value) {
+ if (deferred._status === STATUS_REJECTED) {
+ return;
+ }
+ results[i] = value;
+ unresolved--;
+ if (unresolved === 0)
+ deferred.resolve(results);
+ };
+ })(i);
+ if (Promise.isPromise(promise)) {
+ promise.then(resolve, reject);
+ } else {
+ resolve(promise);
+ }
+ }
+ return deferred;
+ };
+
+ /**
+ * Checks if the value is likely a promise (has a 'then' function).
+ * @return {boolean} true if x is thenable
+ */
+ Promise.isPromise = function Promise_isPromise(value) {
+ return value && typeof value.then === 'function';
+ };
+
+ Promise.prototype = {
+ _status: null,
+ _value: null,
+ _handlers: null,
+ _unhandledRejection: null,
+
+ _updateStatus: function Promise__updateStatus(status, value) {
+ if (this._status === STATUS_RESOLVED ||
+ this._status === STATUS_REJECTED) {
+ return;
+ }
+
+ if (status == STATUS_RESOLVED &&
+ Promise.isPromise(value)) {
+ value.then(this._updateStatus.bind(this, STATUS_RESOLVED),
+ this._updateStatus.bind(this, STATUS_REJECTED));
+ return;
+ }
+
+ this._status = status;
+ this._value = value;
+
+ if (status === STATUS_REJECTED && this._handlers.length === 0) {
+ this._unhandledRejection = true;
+ HandlerManager.addUnhandledRejection(this);
+ }
+
+ HandlerManager.scheduleHandlers(this);
+ },
+
+ get isResolved() {
+ return this._status === STATUS_RESOLVED;
+ },
+
+ get isRejected() {
+ return this._status === STATUS_REJECTED;
+ },
+
+ resolve: function Promise_resolve(value) {
+ this._updateStatus(STATUS_RESOLVED, value);
+ },
+
+ reject: function Promise_reject(reason) {
+ this._updateStatus(STATUS_REJECTED, reason);
+ },
+
+ then: function Promise_then(onResolve, onReject) {
+ var nextPromise = new Promise();
+ this._handlers.push({
+ thisPromise: this,
+ onResolve: onResolve,
+ onReject: onReject,
+ nextPromise: nextPromise
+ });
+ HandlerManager.scheduleHandlers(this);
+ return nextPromise;
+ }
+ };
+
+ return Promise;
+})();
+
+var StatTimer = (function StatTimerClosure() {
+ function rpad(str, pad, length) {
+ while (str.length < length)
+ str += pad;
+ return str;
+ }
+ function StatTimer() {
+ this.started = {};
+ this.times = [];
+ this.enabled = true;
+ }
+ StatTimer.prototype = {
+ time: function StatTimer_time(name) {
+ if (!this.enabled)
+ return;
+ if (name in this.started)
+ warn('Timer is already running for ' + name);
+ this.started[name] = Date.now();
+ },
+ timeEnd: function StatTimer_timeEnd(name) {
+ if (!this.enabled)
+ return;
+ if (!(name in this.started))
+ warn('Timer has not been started for ' + name);
+ this.times.push({
+ 'name': name,
+ 'start': this.started[name],
+ 'end': Date.now()
+ });
+ // Remove timer from started so it can be called again.
+ delete this.started[name];
+ },
+ toString: function StatTimer_toString() {
+ var times = this.times;
+ var out = '';
+ // Find the longest name for padding purposes.
+ var longest = 0;
+ for (var i = 0, ii = times.length; i < ii; ++i) {
+ var name = times[i]['name'];
+ if (name.length > longest)
+ longest = name.length;
+ }
+ for (var i = 0, ii = times.length; i < ii; ++i) {
+ var span = times[i];
+ var duration = span.end - span.start;
+ out += rpad(span['name'], ' ', longest) + ' ' + duration + 'ms\n';
+ }
+ return out;
+ }
+ };
+ return StatTimer;
+})();
+
+PDFJS.createBlob = function createBlob(data, contentType) {
+ if (typeof Blob !== 'undefined')
+ return new Blob([data], { type: contentType });
+ // Blob builder is deprecated in FF14 and removed in FF18.
+ var bb = new MozBlobBuilder();
+ bb.append(data);
+ return bb.getBlob(contentType);
+};
+
+PDFJS.createObjectURL = (function createObjectURLClosure() {
+ if (typeof URL !== 'undefined' && URL.createObjectURL) {
+ return function createObjectURL(data, contentType) {
+ var blob = PDFJS.createBlob(data, contentType);
+ return URL.createObjectURL(blob);
+ };
+ }
+
+ // Blob/createObjectURL is not available, falling back to data schema.
+ var digits =
+ 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+
+ return function createObjectURL(data, contentType) {
+ var buffer = 'data:' + contentType + ';base64,';
+ for (var i = 0, ii = data.length; i < ii; i += 3) {
+ var b1 = data[i] & 0xFF;
+ var b2 = data[i + 1] & 0xFF;
+ var b3 = data[i + 2] & 0xFF;
+ var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4);
+ var d3 = i + 1 < ii ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64;
+ var d4 = i + 2 < ii ? (b3 & 0x3F) : 64;
+ buffer += digits[d1] + digits[d2] + digits[d3] + digits[d4];
+ }
+ return buffer;
+ };
+})();
+
+function MessageHandler(name, comObj) {
+ this.name = name;
+ this.comObj = comObj;
+ this.callbackIndex = 1;
+ this.postMessageTransfers = true;
+ var callbacks = this.callbacks = {};
+ var ah = this.actionHandler = {};
+
+ ah['console_log'] = [function ahConsoleLog(data) {
+ log.apply(null, data);
+ }];
+ // If there's no console available, console_error in the
+ // action handler will do nothing.
+ if ('console' in globalScope) {
+ ah['console_error'] = [function ahConsoleError(data) {
+ globalScope['console'].error.apply(null, data);
+ }];
+ } else {
+ ah['console_error'] = [function ahConsoleError(data) {
+ log.apply(null, data);
+ }];
+ }
+ ah['_warn'] = [function ah_Warn(data) {
+ warn(data);
+ }];
+
+ comObj.onmessage = function messageHandlerComObjOnMessage(event) {
+ var data = event.data;
+ if (data.isReply) {
+ var callbackId = data.callbackId;
+ if (data.callbackId in callbacks) {
+ var callback = callbacks[callbackId];
+ delete callbacks[callbackId];
+ callback(data.data);
+ } else {
+ error('Cannot resolve callback ' + callbackId);
+ }
+ } else if (data.action in ah) {
+ var action = ah[data.action];
+ if (data.callbackId) {
+ var promise = new Promise();
+ promise.then(function(resolvedData) {
+ comObj.postMessage({
+ isReply: true,
+ callbackId: data.callbackId,
+ data: resolvedData
+ });
+ });
+ action[0].call(action[1], data.data, promise);
+ } else {
+ action[0].call(action[1], data.data);
+ }
+ } else {
+ error('Unkown action from worker: ' + data.action);
+ }
+ };
+}
+
+MessageHandler.prototype = {
+ on: function messageHandlerOn(actionName, handler, scope) {
+ var ah = this.actionHandler;
+ if (ah[actionName]) {
+ error('There is already an actionName called "' + actionName + '"');
+ }
+ ah[actionName] = [handler, scope];
+ },
+ /**
+ * Sends a message to the comObj to invoke the action with the supplied data.
+ * @param {String} actionName Action to call.
+ * @param {JSON} data JSON data to send.
+ * @param {function} [callback] Optional callback that will handle a reply.
+ * @param {Array} [transfers] Optional list of transfers/ArrayBuffers
+ */
+ send: function messageHandlerSend(actionName, data, callback, transfers) {
+ var message = {
+ action: actionName,
+ data: data
+ };
+ if (callback) {
+ var callbackId = this.callbackIndex++;
+ this.callbacks[callbackId] = callback;
+ message.callbackId = callbackId;
+ }
+ if (transfers && this.postMessageTransfers) {
+ this.comObj.postMessage(message, transfers);
+ } else {
+ this.comObj.postMessage(message);
+ }
+ }
+};
+
+function loadJpegStream(id, imageUrl, objs) {
+ var img = new Image();
+ img.onload = (function loadJpegStream_onloadClosure() {
+ objs.resolve(id, img);
+ });
+ img.src = imageUrl;
+}
+
+
+var ColorSpace = (function ColorSpaceClosure() {
+ // Constructor should define this.numComps, this.defaultColor, this.name
+ function ColorSpace() {
+ error('should not call ColorSpace constructor');
+ }
+
+ ColorSpace.prototype = {
+ /**
+ * Converts the color value to the RGB color. The color components are
+ * located in the src array starting from the srcOffset. Returns the array
+ * of the rgb components, each value ranging from [0,255].
+ */
+ getRgb: function ColorSpace_getRgb(src, srcOffset) {
+ error('Should not call ColorSpace.getRgb');
+ },
+ /**
+ * Converts the color value to the RGB color, similar to the getRgb method.
+ * The result placed into the dest array starting from the destOffset.
+ */
+ getRgbItem: function ColorSpace_getRgb(src, srcOffset, dest, destOffset) {
+ error('Should not call ColorSpace.getRgbItem');
+ },
+ /**
+ * Converts the specified number of the color values to the RGB colors.
+ * The colors are located in the src array starting from the srcOffset.
+ * The result is placed into the dest array starting from the destOffset.
+ * The src array items shall be in [0,2^bits) range, the dest array items
+ * will be in [0,255] range.
+ */
+ getRgbBuffer: function ColorSpace_getRgbBuffer(src, srcOffset, count,
+ dest, destOffset, bits) {
+ error('Should not call ColorSpace.getRgbBuffer');
+ },
+ /**
+ * Determines amount of the bytes is required to store the reslut of the
+ * conversion that done by the getRgbBuffer method.
+ */
+ getOutputLength: function ColorSpace_getOutputLength(inputLength) {
+ error('Should not call ColorSpace.getOutputLength');
+ },
+ /**
+ * Returns true if source data will be equal the result/output data.
+ */
+ isPassthrough: function ColorSpace_isPassthrough(bits) {
+ return false;
+ },
+ /**
+ * Creates the output buffer and converts the specified number of the color
+ * values to the RGB colors, similar to the getRgbBuffer.
+ */
+ createRgbBuffer: function ColorSpace_createRgbBuffer(src, srcOffset,
+ count, bits) {
+ if (this.isPassthrough(bits)) {
+ return src.subarray(srcOffset);
+ }
+ var dest = new Uint8Array(count * 3);
+ var numComponentColors = 1 << bits;
+ // Optimization: create a color map when there is just one component and
+ // we are converting more colors than the size of the color map. We
+ // don't build the map if the colorspace is gray or rgb since those
+ // methods are faster than building a map. This mainly offers big speed
+ // ups for indexed and alternate colorspaces.
+ if (this.numComps === 1 && count > numComponentColors &&
+ this.name !== 'DeviceGray' && this.name !== 'DeviceRGB') {
+ // TODO it may be worth while to cache the color map. While running
+ // testing I never hit a cache so I will leave that out for now (perhaps
+ // we are reparsing colorspaces too much?).
+ var allColors = bits <= 8 ? new Uint8Array(numComponentColors) :
+ new Uint16Array(numComponentColors);
+ for (var i = 0; i < numComponentColors; i++) {
+ allColors[i] = i;
+ }
+ var colorMap = new Uint8Array(numComponentColors * 3);
+ this.getRgbBuffer(allColors, 0, numComponentColors, colorMap, 0, bits);
+
+ var destOffset = 0;
+ for (var i = 0; i < count; ++i) {
+ var key = src[srcOffset++] * 3;
+ dest[destOffset++] = colorMap[key];
+ dest[destOffset++] = colorMap[key + 1];
+ dest[destOffset++] = colorMap[key + 2];
+ }
+ return dest;
+ }
+ this.getRgbBuffer(src, srcOffset, count, dest, 0, bits);
+ return dest;
+ },
+ /**
+ * True if the colorspace has components in the default range of [0, 1].
+ * This should be true for all colorspaces except for lab color spaces
+ * which are [0,100], [-128, 127], [-128, 127].
+ */
+ usesZeroToOneRange: true
+ };
+
+ ColorSpace.parse = function ColorSpace_parse(cs, xref, res) {
+ var IR = ColorSpace.parseToIR(cs, xref, res);
+ if (IR instanceof AlternateCS)
+ return IR;
+
+ return ColorSpace.fromIR(IR);
+ };
+
+ ColorSpace.fromIR = function ColorSpace_fromIR(IR) {
+ var name = isArray(IR) ? IR[0] : IR;
+
+ switch (name) {
+ case 'DeviceGrayCS':
+ return this.singletons.gray;
+ case 'DeviceRgbCS':
+ return this.singletons.rgb;
+ case 'DeviceCmykCS':
+ return this.singletons.cmyk;
+ case 'CalGrayCS':
+ var whitePoint = IR[1].WhitePoint;
+ var blackPoint = IR[1].BlackPoint;
+ var gamma = IR[1].Gamma;
+ return new CalGrayCS(whitePoint, blackPoint, gamma);
+ case 'PatternCS':
+ var basePatternCS = IR[1];
+ if (basePatternCS)
+ basePatternCS = ColorSpace.fromIR(basePatternCS);
+ return new PatternCS(basePatternCS);
+ case 'IndexedCS':
+ var baseIndexedCS = IR[1];
+ var hiVal = IR[2];
+ var lookup = IR[3];
+ return new IndexedCS(ColorSpace.fromIR(baseIndexedCS), hiVal, lookup);
+ case 'AlternateCS':
+ var numComps = IR[1];
+ var alt = IR[2];
+ var tintFnIR = IR[3];
+
+ return new AlternateCS(numComps, ColorSpace.fromIR(alt),
+ PDFFunction.fromIR(tintFnIR));
+ case 'LabCS':
+ var whitePoint = IR[1].WhitePoint;
+ var blackPoint = IR[1].BlackPoint;
+ var range = IR[1].Range;
+ return new LabCS(whitePoint, blackPoint, range);
+ default:
+ error('Unkown name ' + name);
+ }
+ return null;
+ };
+
+ ColorSpace.parseToIR = function ColorSpace_parseToIR(cs, xref, res) {
+ if (isName(cs)) {
+ var colorSpaces = res.get('ColorSpace');
+ if (isDict(colorSpaces)) {
+ var refcs = colorSpaces.get(cs.name);
+ if (refcs)
+ cs = refcs;
+ }
+ }
+
+ cs = xref.fetchIfRef(cs);
+ var mode;
+
+ if (isName(cs)) {
+ mode = cs.name;
+ this.mode = mode;
+
+ switch (mode) {
+ case 'DeviceGray':
+ case 'G':
+ return 'DeviceGrayCS';
+ case 'DeviceRGB':
+ case 'RGB':
+ return 'DeviceRgbCS';
+ case 'DeviceCMYK':
+ case 'CMYK':
+ return 'DeviceCmykCS';
+ case 'Pattern':
+ return ['PatternCS', null];
+ default:
+ error('unrecognized colorspace ' + mode);
+ }
+ } else if (isArray(cs)) {
+ mode = cs[0].name;
+ this.mode = mode;
+
+ switch (mode) {
+ case 'DeviceGray':
+ case 'G':
+ return 'DeviceGrayCS';
+ case 'DeviceRGB':
+ case 'RGB':
+ return 'DeviceRgbCS';
+ case 'DeviceCMYK':
+ case 'CMYK':
+ return 'DeviceCmykCS';
+ case 'CalGray':
+ var params = cs[1].getAll();
+ return ['CalGrayCS', params];
+ case 'CalRGB':
+ return 'DeviceRgbCS';
+ case 'ICCBased':
+ var stream = xref.fetchIfRef(cs[1]);
+ var dict = stream.dict;
+ var numComps = dict.get('N');
+ if (numComps == 1)
+ return 'DeviceGrayCS';
+ if (numComps == 3)
+ return 'DeviceRgbCS';
+ if (numComps == 4)
+ return 'DeviceCmykCS';
+ break;
+ case 'Pattern':
+ var basePatternCS = cs[1];
+ if (basePatternCS)
+ basePatternCS = ColorSpace.parseToIR(basePatternCS, xref, res);
+ return ['PatternCS', basePatternCS];
+ case 'Indexed':
+ case 'I':
+ var baseIndexedCS = ColorSpace.parseToIR(cs[1], xref, res);
+ var hiVal = cs[2] + 1;
+ var lookup = xref.fetchIfRef(cs[3]);
+ if (isStream(lookup)) {
+ lookup = lookup.getBytes();
+ }
+ return ['IndexedCS', baseIndexedCS, hiVal, lookup];
+ case 'Separation':
+ case 'DeviceN':
+ var name = cs[1];
+ var numComps = 1;
+ if (isName(name))
+ numComps = 1;
+ else if (isArray(name))
+ numComps = name.length;
+ var alt = ColorSpace.parseToIR(cs[2], xref, res);
+ var tintFnIR = PDFFunction.getIR(xref, xref.fetchIfRef(cs[3]));
+ return ['AlternateCS', numComps, alt, tintFnIR];
+ case 'Lab':
+ var params = cs[1].getAll();
+ return ['LabCS', params];
+ default:
+ error('unimplemented color space object "' + mode + '"');
+ }
+ } else {
+ error('unrecognized color space object: "' + cs + '"');
+ }
+ return null;
+ };
+ /**
+ * Checks if a decode map matches the default decode map for a color space.
+ * This handles the general decode maps where there are two values per
+ * component. e.g. [0, 1, 0, 1, 0, 1] for a RGB color.
+ * This does not handle Lab, Indexed, or Pattern decode maps since they are
+ * slightly different.
+ * @param {Array} decode Decode map (usually from an image).
+ * @param {Number} n Number of components the color space has.
+ */
+ ColorSpace.isDefaultDecode = function ColorSpace_isDefaultDecode(decode, n) {
+ if (!decode)
+ return true;
+
+ if (n * 2 !== decode.length) {
+ warn('The decode map is not the correct length');
+ return true;
+ }
+ for (var i = 0, ii = decode.length; i < ii; i += 2) {
+ if (decode[i] !== 0 || decode[i + 1] != 1)
+ return false;
+ }
+ return true;
+ };
+
+ ColorSpace.singletons = {
+ get gray() {
+ return shadow(this, 'gray', new DeviceGrayCS());
+ },
+ get rgb() {
+ return shadow(this, 'rgb', new DeviceRgbCS());
+ },
+ get cmyk() {
+ return shadow(this, 'cmyk', new DeviceCmykCS());
+ }
+ };
+
+ return ColorSpace;
+})();
+
+/**
+ * Alternate color space handles both Separation and DeviceN color spaces. A
+ * Separation color space is actually just a DeviceN with one color component.
+ * Both color spaces use a tinting function to convert colors to a base color
+ * space.
+ */
+var AlternateCS = (function AlternateCSClosure() {
+ function AlternateCS(numComps, base, tintFn) {
+ this.name = 'Alternate';
+ this.numComps = numComps;
+ this.defaultColor = new Float32Array(numComps);
+ for (var i = 0; i < numComps; ++i) {
+ this.defaultColor[i] = 1;
+ }
+ this.base = base;
+ this.tintFn = tintFn;
+ }
+
+ AlternateCS.prototype = {
+ getRgb: function AlternateCS_getRgb(src, srcOffset) {
+ var rgb = new Uint8Array(3);
+ this.getRgbItem(src, srcOffset, rgb, 0);
+ return rgb;
+ },
+ getRgbItem: function AlternateCS_getRgbItem(src, srcOffset,
+ dest, destOffset) {
+ var baseNumComps = this.base.numComps;
+ var input = 'subarray' in src ?
+ src.subarray(srcOffset, srcOffset + this.numComps) :
+ Array.prototype.slice.call(src, srcOffset, srcOffset + this.numComps);
+ var tinted = this.tintFn(input);
+ this.base.getRgbItem(tinted, 0, dest, destOffset);
+ },
+ getRgbBuffer: function AlternateCS_getRgbBuffer(src, srcOffset, count,
+ dest, destOffset, bits) {
+ var tintFn = this.tintFn;
+ var base = this.base;
+ var scale = 1 / ((1 << bits) - 1);
+ var baseNumComps = base.numComps;
+ var usesZeroToOneRange = base.usesZeroToOneRange;
+ var isPassthrough = base.isPassthrough(8) || !usesZeroToOneRange;
+ var pos = isPassthrough ? destOffset : 0;
+ var baseBuf = isPassthrough ? dest : new Uint8Array(baseNumComps * count);
+ var numComps = this.numComps;
+
+ var scaled = new Float32Array(numComps);
+ for (var i = 0; i < count; i++) {
+ for (var j = 0; j < numComps; j++) {
+ scaled[j] = src[srcOffset++] * scale;
+ }
+ var tinted = tintFn(scaled);
+ if (usesZeroToOneRange) {
+ for (var j = 0; j < baseNumComps; j++) {
+ baseBuf[pos++] = tinted[j] * 255;
+ }
+ } else {
+ base.getRgbItem(tinted, 0, baseBuf, pos);
+ pos += baseNumComps;
+ }
+ }
+ if (!isPassthrough) {
+ base.getRgbBuffer(baseBuf, 0, count, dest, destOffset, 8);
+ }
+ },
+ getOutputLength: function AlternateCS_getOutputLength(inputLength) {
+ return this.base.getOutputLength(inputLength *
+ this.base.numComps / this.numComps);
+ },
+ isPassthrough: ColorSpace.prototype.isPassthrough,
+ createRgbBuffer: ColorSpace.prototype.createRgbBuffer,
+ isDefaultDecode: function AlternateCS_isDefaultDecode(decodeMap) {
+ return ColorSpace.isDefaultDecode(decodeMap, this.numComps);
+ },
+ usesZeroToOneRange: true
+ };
+
+ return AlternateCS;
+})();
+
+var PatternCS = (function PatternCSClosure() {
+ function PatternCS(baseCS) {
+ this.name = 'Pattern';
+ this.base = baseCS;
+ }
+ PatternCS.prototype = {};
+
+ return PatternCS;
+})();
+
+var IndexedCS = (function IndexedCSClosure() {
+ function IndexedCS(base, highVal, lookup) {
+ this.name = 'Indexed';
+ this.numComps = 1;
+ this.defaultColor = new Uint8Array([0]);
+ this.base = base;
+ this.highVal = highVal;
+
+ var baseNumComps = base.numComps;
+ var length = baseNumComps * highVal;
+ var lookupArray;
+
+ if (isStream(lookup)) {
+ lookupArray = new Uint8Array(length);
+ var bytes = lookup.getBytes(length);
+ lookupArray.set(bytes);
+ } else if (isString(lookup)) {
+ lookupArray = new Uint8Array(length);
+ for (var i = 0; i < length; ++i)
+ lookupArray[i] = lookup.charCodeAt(i);
+ } else if (lookup instanceof Uint8Array || lookup instanceof Array) {
+ lookupArray = lookup;
+ } else {
+ error('Unrecognized lookup table: ' + lookup);
+ }
+ this.lookup = lookupArray;
+ }
+
+ IndexedCS.prototype = {
+ getRgb: function IndexedCS_getRgb(src, srcOffset) {
+ var numComps = this.base.numComps;
+ var start = src[srcOffset] * numComps;
+ return this.base.getRgb(this.lookup, start);
+ },
+ getRgbItem: function IndexedCS_getRgbItem(src, srcOffset,
+ dest, destOffset) {
+ var numComps = this.base.numComps;
+ var start = src[srcOffset] * numComps;
+ this.base.getRgbItem(this.lookup, start, dest, destOffset);
+ },
+ getRgbBuffer: function IndexedCS_getRgbBuffer(src, srcOffset, count,
+ dest, destOffset) {
+ var base = this.base;
+ var numComps = base.numComps;
+ var outputDelta = base.getOutputLength(numComps);
+ var lookup = this.lookup;
+
+ for (var i = 0; i < count; ++i) {
+ var lookupPos = src[srcOffset++] * numComps;
+ base.getRgbBuffer(lookup, lookupPos, 1, dest, destOffset, 8);
+ destOffset += outputDelta;
+ }
+ },
+ getOutputLength: function IndexedCS_getOutputLength(inputLength) {
+ return this.base.getOutputLength(inputLength * this.base.numComps);
+ },
+ isPassthrough: ColorSpace.prototype.isPassthrough,
+ createRgbBuffer: ColorSpace.prototype.createRgbBuffer,
+ isDefaultDecode: function IndexedCS_isDefaultDecode(decodeMap) {
+ // indexed color maps shouldn't be changed
+ return true;
+ },
+ usesZeroToOneRange: true
+ };
+ return IndexedCS;
+})();
+
+var DeviceGrayCS = (function DeviceGrayCSClosure() {
+ function DeviceGrayCS() {
+ this.name = 'DeviceGray';
+ this.numComps = 1;
+ this.defaultColor = new Float32Array([0]);
+ }
+
+ DeviceGrayCS.prototype = {
+ getRgb: function DeviceGrayCS_getRgb(src, srcOffset) {
+ var rgb = new Uint8Array(3);
+ this.getRgbItem(src, srcOffset, rgb, 0);
+ return rgb;
+ },
+ getRgbItem: function DeviceGrayCS_getRgbItem(src, srcOffset,
+ dest, destOffset) {
+ var c = (src[srcOffset] * 255) | 0;
+ c = c < 0 ? 0 : c > 255 ? 255 : c;
+ dest[destOffset] = dest[destOffset + 1] = dest[destOffset + 2] = c;
+ },
+ getRgbBuffer: function DeviceGrayCS_getRgbBuffer(src, srcOffset, count,
+ dest, destOffset, bits) {
+ var scale = 255 / ((1 << bits) - 1);
+ var j = srcOffset, q = destOffset;
+ for (var i = 0; i < count; ++i) {
+ var c = (scale * src[j++]) | 0;
+ dest[q++] = c;
+ dest[q++] = c;
+ dest[q++] = c;
+ }
+ },
+ getOutputLength: function DeviceGrayCS_getOutputLength(inputLength) {
+ return inputLength * 3;
+ },
+ isPassthrough: ColorSpace.prototype.isPassthrough,
+ createRgbBuffer: ColorSpace.prototype.createRgbBuffer,
+ isDefaultDecode: function DeviceGrayCS_isDefaultDecode(decodeMap) {
+ return ColorSpace.isDefaultDecode(decodeMap, this.numComps);
+ },
+ usesZeroToOneRange: true
+ };
+ return DeviceGrayCS;
+})();
+
+var DeviceRgbCS = (function DeviceRgbCSClosure() {
+ function DeviceRgbCS() {
+ this.name = 'DeviceRGB';
+ this.numComps = 3;
+ this.defaultColor = new Float32Array([0, 0, 0]);
+ }
+ DeviceRgbCS.prototype = {
+ getRgb: function DeviceRgbCS_getRgb(src, srcOffset) {
+ var rgb = new Uint8Array(3);
+ this.getRgbItem(src, srcOffset, rgb, 0);
+ return rgb;
+ },
+ getRgbItem: function DeviceRgbCS_getRgbItem(src, srcOffset,
+ dest, destOffset) {
+ var r = (src[srcOffset] * 255) | 0;
+ var g = (src[srcOffset + 1] * 255) | 0;
+ var b = (src[srcOffset + 2] * 255) | 0;
+ dest[destOffset] = r < 0 ? 0 : r > 255 ? 255 : r;
+ dest[destOffset + 1] = g < 0 ? 0 : g > 255 ? 255 : g;
+ dest[destOffset + 2] = b < 0 ? 0 : b > 255 ? 255 : b;
+ },
+ getRgbBuffer: function DeviceRgbCS_getRgbBuffer(src, srcOffset, count,
+ dest, destOffset, bits) {
+ var length = count * 3;
+ if (bits == 8) {
+ dest.set(src.subarray(srcOffset, srcOffset + length), destOffset);
+ return;
+ }
+ var scale = 255 / ((1 << bits) - 1);
+ var j = srcOffset, q = destOffset;
+ for (var i = 0; i < length; ++i) {
+ dest[q++] = (scale * src[j++]) | 0;
+ }
+ },
+ getOutputLength: function DeviceRgbCS_getOutputLength(inputLength) {
+ return inputLength;
+ },
+ isPassthrough: function DeviceRgbCS_isPassthrough(bits) {
+ return bits == 8;
+ },
+ createRgbBuffer: ColorSpace.prototype.createRgbBuffer,
+ isDefaultDecode: function DeviceRgbCS_isDefaultDecode(decodeMap) {
+ return ColorSpace.isDefaultDecode(decodeMap, this.numComps);
+ },
+ usesZeroToOneRange: true
+ };
+ return DeviceRgbCS;
+})();
+
+var DeviceCmykCS = (function DeviceCmykCSClosure() {
+ // The coefficients below was found using numerical analysis: the method of
+ // steepest descent for the sum((f_i - color_value_i)^2) for r/g/b colors,
+ // where color_value is the tabular value from the table of sampled RGB colors
+ // from CMYK US Web Coated (SWOP) colorspace, and f_i is the corresponding
+ // CMYK color conversion using the estimation below:
+ // f(A, B,.. N) = Acc+Bcm+Ccy+Dck+c+Fmm+Gmy+Hmk+Im+Jyy+Kyk+Ly+Mkk+Nk+255
+ function convertToRgb(src, srcOffset, srcScale, dest, destOffset) {
+ var c = src[srcOffset + 0] * srcScale;
+ var m = src[srcOffset + 1] * srcScale;
+ var y = src[srcOffset + 2] * srcScale;
+ var k = src[srcOffset + 3] * srcScale;
+
+ var r =
+ c * (-4.387332384609988 * c + 54.48615194189176 * m +
+ 18.82290502165302 * y + 212.25662451639585 * k +
+ -285.2331026137004) +
+ m * (1.7149763477362134 * m - 5.6096736904047315 * y +
+ -17.873870861415444 * k - 5.497006427196366) +
+ y * (-2.5217340131683033 * y - 21.248923337353073 * k +
+ 17.5119270841813) +
+ k * (-21.86122147463605 * k - 189.48180835922747) + 255;
+ var g =
+ c * (8.841041422036149 * c + 60.118027045597366 * m +
+ 6.871425592049007 * y + 31.159100130055922 * k +
+ -79.2970844816548) +
+ m * (-15.310361306967817 * m + 17.575251261109482 * y +
+ 131.35250912493976 * k - 190.9453302588951) +
+ y * (4.444339102852739 * y + 9.8632861493405 * k - 24.86741582555878) +
+ k * (-20.737325471181034 * k - 187.80453709719578) + 255;
+ var b =
+ c * (0.8842522430003296 * c + 8.078677503112928 * m +
+ 30.89978309703729 * y - 0.23883238689178934 * k +
+ -14.183576799673286) +
+ m * (10.49593273432072 * m + 63.02378494754052 * y +
+ 50.606957656360734 * k - 112.23884253719248) +
+ y * (0.03296041114873217 * y + 115.60384449646641 * k +
+ -193.58209356861505) +
+ k * (-22.33816807309886 * k - 180.12613974708367) + 255;
+
+ dest[destOffset] = r > 255 ? 255 : r < 0 ? 0 : r;
+ dest[destOffset + 1] = g > 255 ? 255 : g < 0 ? 0 : g;
+ dest[destOffset + 2] = b > 255 ? 255 : b < 0 ? 0 : b;
+ }
+
+ function DeviceCmykCS() {
+ this.name = 'DeviceCMYK';
+ this.numComps = 4;
+ this.defaultColor = new Float32Array([0, 0, 0, 1]);
+ }
+ DeviceCmykCS.prototype = {
+ getRgb: function DeviceCmykCS_getRgb(src, srcOffset) {
+ var rgb = new Uint8Array(3);
+ convertToRgb(src, srcOffset, 1, rgb, 0);
+ return rgb;
+ },
+ getRgbItem: function DeviceCmykCS_getRgbItem(src, srcOffset,
+ dest, destOffset) {
+ convertToRgb(src, srcOffset, 1, dest, destOffset);
+ },
+ getRgbBuffer: function DeviceCmykCS_getRgbBuffer(src, srcOffset, count,
+ dest, destOffset, bits) {
+ var scale = 1 / ((1 << bits) - 1);
+ for (var i = 0; i < count; i++) {
+ convertToRgb(src, srcOffset, scale, dest, destOffset);
+ srcOffset += 4;
+ destOffset += 3;
+ }
+ },
+ getOutputLength: function DeviceCmykCS_getOutputLength(inputLength) {
+ return (inputLength >> 2) * 3;
+ },
+ isPassthrough: ColorSpace.prototype.isPassthrough,
+ createRgbBuffer: ColorSpace.prototype.createRgbBuffer,
+ isDefaultDecode: function DeviceCmykCS_isDefaultDecode(decodeMap) {
+ return ColorSpace.isDefaultDecode(decodeMap, this.numComps);
+ },
+ usesZeroToOneRange: true
+ };
+
+ return DeviceCmykCS;
+})();
+
+//
+// CalGrayCS: Based on "PDF Reference, Sixth Ed", p.245
+//
+var CalGrayCS = (function CalGrayCSClosure() {
+ function CalGrayCS(whitePoint, blackPoint, gamma) {
+ this.name = 'CalGray';
+ this.numComps = 3;
+ this.defaultColor = new Float32Array([0, 0, 0]);
+
+ if (!whitePoint) {
+ error('WhitePoint missing - required for color space CalGray');
+ }
+ blackPoint = blackPoint || [0, 0, 0];
+ gamma = gamma || 1;
+
+ // Translate arguments to spec variables.
+ this.XW = whitePoint[0];
+ this.YW = whitePoint[1];
+ this.ZW = whitePoint[2];
+
+ this.XB = blackPoint[0];
+ this.YB = blackPoint[1];
+ this.ZB = blackPoint[2];
+
+ this.G = gamma;
+
+ // Validate variables as per spec.
+ if (this.XW < 0 || this.ZW < 0 || this.YW !== 1) {
+ error('Invalid WhitePoint components for ' + this.name +
+ ', no fallback available');
+ }
+
+ if (this.XB < 0 || this.YB < 0 || this.ZB < 0) {
+ info('Invalid BlackPoint for ' + this.name + ', falling back to default');
+ this.XB = this.YB = this.ZB = 0;
+ }
+
+ if (this.XB !== 0 || this.YB !== 0 || this.ZB !== 0) {
+ TODO(this.name + ', BlackPoint: XB: ' + this.XB + ', YB: ' + this.YB +
+ ', ZB: ' + this.ZB + ', only default values are supported.');
+ }
+
+ if (this.G < 1) {
+ info('Invalid Gamma: ' + this.G + ' for ' + this.name +
+ ', falling back to default');
+ this.G = 1;
+ }
+ }
+
+ CalGrayCS.prototype = {
+ getRgb: function CalGrayCS_getRgb(src, srcOffset) {
+ var rgb = new Uint8Array(3);
+ this.getRgbItem(src, srcOffset, rgb, 0);
+ return rgb;
+ },
+ getRgbItem: function CalGrayCS_getRgbItem(src, srcOffset,
+ dest, destOffset) {
+ // A represents a gray component of a calibrated gray space.
+ // A <---> AG in the spec
+ var A = src[srcOffset];
+ var AG = Math.pow(A, this.G);
+
+ // Computes intermediate variables M, L, N as per spec.
+ // Except if other than default BlackPoint values are used.
+ var M = this.XW * AG;
+ var L = this.YW * AG;
+ var N = this.ZW * AG;
+
+ // Decode XYZ, as per spec.
+ var X = M;
+ var Y = L;
+ var Z = N;
+
+ // http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html, Ch 4.
+ // This yields values in range [0, 100].
+ var Lstar = Math.max(116 * Math.pow(Y, 1 / 3) - 16, 0);
+
+ // Convert values to rgb range [0, 255].
+ dest[destOffset] = Lstar * 255 / 100;
+ dest[destOffset + 1] = Lstar * 255 / 100;
+ dest[destOffset + 2] = Lstar * 255 / 100;
+ },
+ getRgbBuffer: function CalGrayCS_getRgbBuffer(src, srcOffset, count,
+ dest, destOffset, bits) {
+ // TODO: This part is copied from DeviceGray. Make this utility function.
+ var scale = 255 / ((1 << bits) - 1);
+ var j = srcOffset, q = destOffset;
+ for (var i = 0; i < count; ++i) {
+ var c = (scale * src[j++]) | 0;
+ dest[q++] = c;
+ dest[q++] = c;
+ dest[q++] = c;
+ }
+ },
+ getOutputLength: function CalGrayCS_getOutputLength(inputLength) {
+ return inputLength * 3;
+ },
+ isPassthrough: ColorSpace.prototype.isPassthrough,
+ createRgbBuffer: ColorSpace.prototype.createRgbBuffer,
+ isDefaultDecode: function CalGrayCS_isDefaultDecode(decodeMap) {
+ return ColorSpace.isDefaultDecode(decodeMap, this.numComps);
+ },
+ usesZeroToOneRange: true
+ };
+ return CalGrayCS;
+})();
+
+//
+// LabCS: Based on "PDF Reference, Sixth Ed", p.250
+//
+var LabCS = (function LabCSClosure() {
+ function LabCS(whitePoint, blackPoint, range) {
+ this.name = 'Lab';
+ this.numComps = 3;
+ this.defaultColor = new Float32Array([0, 0, 0]);
+
+ if (!whitePoint)
+ error('WhitePoint missing - required for color space Lab');
+ blackPoint = blackPoint || [0, 0, 0];
+ range = range || [-100, 100, -100, 100];
+
+ // Translate args to spec variables
+ this.XW = whitePoint[0];
+ this.YW = whitePoint[1];
+ this.ZW = whitePoint[2];
+ this.amin = range[0];
+ this.amax = range[1];
+ this.bmin = range[2];
+ this.bmax = range[3];
+
+ // These are here just for completeness - the spec doesn't offer any
+ // formulas that use BlackPoint in Lab
+ this.XB = blackPoint[0];
+ this.YB = blackPoint[1];
+ this.ZB = blackPoint[2];
+
+ // Validate vars as per spec
+ if (this.XW < 0 || this.ZW < 0 || this.YW !== 1)
+ error('Invalid WhitePoint components, no fallback available');
+
+ if (this.XB < 0 || this.YB < 0 || this.ZB < 0) {
+ info('Invalid BlackPoint, falling back to default');
+ this.XB = this.YB = this.ZB = 0;
+ }
+
+ if (this.amin > this.amax || this.bmin > this.bmax) {
+ info('Invalid Range, falling back to defaults');
+ this.amin = -100;
+ this.amax = 100;
+ this.bmin = -100;
+ this.bmax = 100;
+ }
+ }
+
+ // Function g(x) from spec
+ function fn_g(x) {
+ if (x >= 6 / 29)
+ return x * x * x;
+ else
+ return (108 / 841) * (x - 4 / 29);
+ }
+
+ function decode(value, high1, low2, high2) {
+ return low2 + (value) * (high2 - low2) / (high1);
+ }
+
+ // If decoding is needed maxVal should be 2^bits per component - 1.
+ function convertToRgb(cs, src, srcOffset, maxVal, dest, destOffset) {
+ // XXX: Lab input is in the range of [0, 100], [amin, amax], [bmin, bmax]
+ // not the usual [0, 1]. If a command like setFillColor is used the src
+ // values will already be within the correct range. However, if we are
+ // converting an image we have to map the values to the correct range given
+ // above.
+ // Ls,as,bs <---> L*,a*,b* in the spec
+ var Ls = src[srcOffset];
+ var as = src[srcOffset + 1];
+ var bs = src[srcOffset + 2];
+ if (maxVal !== false) {
+ Ls = decode(Ls, maxVal, 0, 100);
+ as = decode(as, maxVal, cs.amin, cs.amax);
+ bs = decode(bs, maxVal, cs.bmin, cs.bmax);
+ }
+
+ // Adjust limits of 'as' and 'bs'
+ as = as > cs.amax ? cs.amax : as < cs.amin ? cs.amin : as;
+ bs = bs > cs.bmax ? cs.bmax : bs < cs.bmin ? cs.bmin : bs;
+
+ // Computes intermediate variables X,Y,Z as per spec
+ var M = (Ls + 16) / 116;
+ var L = M + (as / 500);
+ var N = M - (bs / 200);
+
+ var X = cs.XW * fn_g(L);
+ var Y = cs.YW * fn_g(M);
+ var Z = cs.ZW * fn_g(N);
+
+ var r, g, b;
+ // Using different conversions for D50 and D65 white points,
+ // per http://www.color.org/srgb.pdf
+ if (cs.ZW < 1) {
+ // Assuming D50 (X=0.9642, Y=1.00, Z=0.8249)
+ r = X * 3.1339 + Y * -1.6170 + Z * -0.4906;
+ g = X * -0.9785 + Y * 1.9160 + Z * 0.0333;
+ b = X * 0.0720 + Y * -0.2290 + Z * 1.4057;
+ } else {
+ // Assuming D65 (X=0.9505, Y=1.00, Z=1.0888)
+ r = X * 3.2406 + Y * -1.5372 + Z * -0.4986;
+ g = X * -0.9689 + Y * 1.8758 + Z * 0.0415;
+ b = X * 0.0557 + Y * -0.2040 + Z * 1.0570;
+ }
+ // clamp color values to [0,1] range then convert to [0,255] range.
+ dest[destOffset] = Math.sqrt(r < 0 ? 0 : r > 1 ? 1 : r) * 255;
+ dest[destOffset + 1] = Math.sqrt(g < 0 ? 0 : g > 1 ? 1 : g) * 255;
+ dest[destOffset + 2] = Math.sqrt(b < 0 ? 0 : b > 1 ? 1 : b) * 255;
+ }
+
+ LabCS.prototype = {
+ getRgb: function LabCS_getRgb(src, srcOffset) {
+ var rgb = new Uint8Array(3);
+ convertToRgb(this, src, srcOffset, false, rgb, 0);
+ return rgb;
+ },
+ getRgbItem: function LabCS_getRgbItem(src, srcOffset, dest, destOffset) {
+ convertToRgb(this, src, srcOffset, false, dest, destOffset);
+ },
+ getRgbBuffer: function LabCS_getRgbBuffer(src, srcOffset, count,
+ dest, destOffset, bits) {
+ var maxVal = (1 << bits) - 1;
+ for (var i = 0; i < count; i++) {
+ convertToRgb(this, src, srcOffset, maxVal, dest, destOffset);
+ srcOffset += 3;
+ destOffset += 3;
+ }
+ },
+ getOutputLength: function LabCS_getOutputLength(inputLength) {
+ return inputLength;
+ },
+ isPassthrough: ColorSpace.prototype.isPassthrough,
+ isDefaultDecode: function LabCS_isDefaultDecode(decodeMap) {
+ // XXX: Decoding is handled with the lab conversion because of the strange
+ // ranges that are used.
+ return true;
+ },
+ usesZeroToOneRange: false
+ };
+ return LabCS;
+})();
+
+
+
+var PatternType = {
+ AXIAL: 2,
+ RADIAL: 3
+};
+
+var Pattern = (function PatternClosure() {
+ // Constructor should define this.getPattern
+ function Pattern() {
+ error('should not call Pattern constructor');
+ }
+
+ Pattern.prototype = {
+ // Input: current Canvas context
+ // Output: the appropriate fillStyle or strokeStyle
+ getPattern: function Pattern_getPattern(ctx) {
+ error('Should not call Pattern.getStyle: ' + ctx);
+ }
+ };
+
+ Pattern.shadingFromIR = function Pattern_shadingFromIR(raw) {
+ return Shadings[raw[0]].fromIR(raw);
+ };
+
+ Pattern.parseShading = function Pattern_parseShading(shading, matrix, xref,
+ res) {
+
+ var dict = isStream(shading) ? shading.dict : shading;
+ var type = dict.get('ShadingType');
+
+ switch (type) {
+ case PatternType.AXIAL:
+ case PatternType.RADIAL:
+ // Both radial and axial shadings are handled by RadialAxial shading.
+ return new Shadings.RadialAxial(dict, matrix, xref, res);
+ default:
+ TODO('Unsupported shading type: ' + type);
+ return new Shadings.Dummy();
+ }
+ };
+ return Pattern;
+})();
+
+var Shadings = {};
+
+// A small number to offset the first/last color stops so we can insert ones to
+// support extend. Number.MIN_VALUE appears to be too small and breaks the
+// extend. 1e-7 works in FF but chrome seems to use an even smaller sized number
+// internally so we have to go bigger.
+Shadings.SMALL_NUMBER = 1e-2;
+
+// Radial and axial shading have very similar implementations
+// If needed, the implementations can be broken into two classes
+Shadings.RadialAxial = (function RadialAxialClosure() {
+ function RadialAxial(dict, matrix, xref, res, ctx) {
+ this.matrix = matrix;
+ this.coordsArr = dict.get('Coords');
+ this.shadingType = dict.get('ShadingType');
+ this.type = 'Pattern';
+ this.ctx = ctx;
+ var cs = dict.get('ColorSpace', 'CS');
+ cs = ColorSpace.parse(cs, xref, res);
+ this.cs = cs;
+
+ var t0 = 0.0, t1 = 1.0;
+ if (dict.has('Domain')) {
+ var domainArr = dict.get('Domain');
+ t0 = domainArr[0];
+ t1 = domainArr[1];
+ }
+
+ var extendStart = false, extendEnd = false;
+ if (dict.has('Extend')) {
+ var extendArr = dict.get('Extend');
+ extendStart = extendArr[0];
+ extendEnd = extendArr[1];
+ }
+
+ if (this.shadingType === PatternType.RADIAL &&
+ (!extendStart || !extendEnd)) {
+ // Radial gradient only currently works if either circle is fully within
+ // the other circle.
+ var x1 = this.coordsArr[0];
+ var y1 = this.coordsArr[1];
+ var r1 = this.coordsArr[2];
+ var x2 = this.coordsArr[3];
+ var y2 = this.coordsArr[4];
+ var r2 = this.coordsArr[5];
+ var distance = Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
+ if (r1 <= r2 + distance &&
+ r2 <= r1 + distance) {
+ warn('Unsupported radial gradient.');
+ }
+ }
+
+ this.extendStart = extendStart;
+ this.extendEnd = extendEnd;
+
+ var fnObj = dict.get('Function');
+ var fn;
+ if (isArray(fnObj)) {
+ var fnArray = [];
+ for (var j = 0, jj = fnObj.length; j < jj; j++) {
+ var obj = xref.fetchIfRef(fnObj[j]);
+ if (!isPDFFunction(obj)) {
+ error('Invalid function');
+ }
+ fnArray.push(PDFFunction.parse(xref, obj));
+ }
+ fn = function radialAxialColorFunction(arg) {
+ var out = [];
+ for (var i = 0, ii = fnArray.length; i < ii; i++) {
+ out.push(fnArray[i](arg)[0]);
+ }
+ return out;
+ };
+ } else {
+ if (!isPDFFunction(fnObj)) {
+ error('Invalid function');
+ }
+ fn = PDFFunction.parse(xref, fnObj);
+ }
+
+ // 10 samples seems good enough for now, but probably won't work
+ // if there are sharp color changes. Ideally, we would implement
+ // the spec faithfully and add lossless optimizations.
+ var diff = t1 - t0;
+ var step = diff / 10;
+
+ var colorStops = this.colorStops = [];
+
+ // Protect against bad domains so we don't end up in an infinte loop below.
+ if (t0 >= t1 || step <= 0) {
+ // Acrobat doesn't seem to handle these cases so we'll ignore for
+ // now.
+ info('Bad shading domain.');
+ return;
+ }
+
+ for (var i = t0; i <= t1; i += step) {
+ var rgbColor = cs.getRgb(fn([i]), 0);
+ var cssColor = Util.makeCssRgb(rgbColor);
+ colorStops.push([(i - t0) / diff, cssColor]);
+ }
+
+ var background = 'transparent';
+ if (dict.has('Background')) {
+ var rgbColor = cs.getRgb(dict.get('Background'), 0);
+ background = Util.makeCssRgb(rgbColor);
+ }
+
+ if (!extendStart) {
+ // Insert a color stop at the front and offset the first real color stop
+ // so it doesn't conflict with the one we insert.
+ colorStops.unshift([0, background]);
+ colorStops[1][0] += Shadings.SMALL_NUMBER;
+ }
+ if (!extendEnd) {
+ // Same idea as above in extendStart but for the end.
+ colorStops[colorStops.length - 1][0] -= Shadings.SMALL_NUMBER;
+ colorStops.push([1, background]);
+ }
+
+ this.colorStops = colorStops;
+ }
+
+ RadialAxial.fromIR = function RadialAxial_fromIR(raw) {
+ var type = raw[1];
+ var colorStops = raw[2];
+ var p0 = raw[3];
+ var p1 = raw[4];
+ var r0 = raw[5];
+ var r1 = raw[6];
+ return {
+ type: 'Pattern',
+ getPattern: function RadialAxial_getPattern(ctx) {
+ var grad;
+ if (type == PatternType.AXIAL)
+ grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]);
+ else if (type == PatternType.RADIAL)
+ grad = ctx.createRadialGradient(p0[0], p0[1], r0, p1[0], p1[1], r1);
+
+ for (var i = 0, ii = colorStops.length; i < ii; ++i) {
+ var c = colorStops[i];
+ grad.addColorStop(c[0], c[1]);
+ }
+ return grad;
+ }
+ };
+ };
+
+ RadialAxial.prototype = {
+ getIR: function RadialAxial_getIR() {
+ var coordsArr = this.coordsArr;
+ var type = this.shadingType;
+ if (type == PatternType.AXIAL) {
+ var p0 = [coordsArr[0], coordsArr[1]];
+ var p1 = [coordsArr[2], coordsArr[3]];
+ var r0 = null;
+ var r1 = null;
+ } else if (type == PatternType.RADIAL) {
+ var p0 = [coordsArr[0], coordsArr[1]];
+ var p1 = [coordsArr[3], coordsArr[4]];
+ var r0 = coordsArr[2];
+ var r1 = coordsArr[5];
+ } else {
+ error('getPattern type unknown: ' + type);
+ }
+
+ var matrix = this.matrix;
+ if (matrix) {
+ p0 = Util.applyTransform(p0, matrix);
+ p1 = Util.applyTransform(p1, matrix);
+ }
+
+ return ['RadialAxial', type, this.colorStops, p0, p1, r0, r1];
+ }
+ };
+
+ return RadialAxial;
+})();
+
+Shadings.Dummy = (function DummyClosure() {
+ function Dummy() {
+ this.type = 'Pattern';
+ }
+
+ Dummy.fromIR = function Dummy_fromIR() {
+ return {
+ type: 'Pattern',
+ getPattern: function Dummy_fromIR_getPattern() {
+ return 'hotpink';
+ }
+ };
+ };
+
+ Dummy.prototype = {
+ getIR: function Dummy_getIR() {
+ return ['Dummy'];
+ }
+ };
+ return Dummy;
+})();
+
+var TilingPattern = (function TilingPatternClosure() {
+ var PaintType = {
+ COLORED: 1,
+ UNCOLORED: 2
+ };
+
+ var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough
+
+ function TilingPattern(IR, color, ctx, objs, commonObjs, baseTransform) {
+ this.name = IR[1][0].name;
+ this.operatorList = IR[2];
+ this.matrix = IR[3] || [1, 0, 0, 1, 0, 0];
+ this.bbox = IR[4];
+ this.xstep = IR[5];
+ this.ystep = IR[6];
+ this.paintType = IR[7];
+ this.tilingType = IR[8];
+ this.color = color;
+ this.objs = objs;
+ this.commonObjs = commonObjs;
+ this.baseTransform = baseTransform;
+ this.type = 'Pattern';
+ this.ctx = ctx;
+ }
+
+ TilingPattern.getIR = function TilingPattern_getIR(operatorList, dict, args) {
+ var matrix = dict.get('Matrix');
+ var bbox = dict.get('BBox');
+ var xstep = dict.get('XStep');
+ var ystep = dict.get('YStep');
+ var paintType = dict.get('PaintType');
+ var tilingType = dict.get('TilingType');
+
+ return [
+ 'TilingPattern', args, operatorList, matrix, bbox, xstep, ystep,
+ paintType, tilingType
+ ];
+ };
+
+ TilingPattern.prototype = {
+ createPatternCanvas: function TilinPattern_createPatternCanvas(owner) {
+ var operatorList = this.operatorList;
+ var bbox = this.bbox;
+ var xstep = this.xstep;
+ var ystep = this.ystep;
+ var paintType = this.paintType;
+ var tilingType = this.tilingType;
+ var color = this.color;
+ var objs = this.objs;
+ var commonObjs = this.commonObjs;
+ var ctx = this.ctx;
+
+ TODO('TilingType: ' + tilingType);
+
+ var x0 = bbox[0], y0 = bbox[1], x1 = bbox[2], y1 = bbox[3];
+
+ var topLeft = [x0, y0];
+ // we want the canvas to be as large as the step size
+ var botRight = [x0 + xstep, y0 + ystep];
+
+ var width = botRight[0] - topLeft[0];
+ var height = botRight[1] - topLeft[1];
+
+ // Obtain scale from matrix and current transformation matrix.
+ var matrixScale = Util.singularValueDecompose2dScale(this.matrix);
+ var curMatrixScale = Util.singularValueDecompose2dScale(
+ this.baseTransform);
+ var combinedScale = [matrixScale[0] * curMatrixScale[0],
+ matrixScale[1] * curMatrixScale[1]];
+
+ // MAX_PATTERN_SIZE is used to avoid OOM situation.
+ // Use width and height values that are as close as possible to the end
+ // result when the pattern is used. Too low value makes the pattern look
+ // blurry. Too large value makes it look too crispy.
+ width = Math.min(Math.ceil(Math.abs(width * combinedScale[0])),
+ MAX_PATTERN_SIZE);
+
+ height = Math.min(Math.ceil(Math.abs(height * combinedScale[1])),
+ MAX_PATTERN_SIZE);
+
+ var tmpCanvas = CachedCanvases.getCanvas('pattern', width, height, true);
+ var tmpCtx = tmpCanvas.context;
+ var graphics = new CanvasGraphics(tmpCtx, commonObjs, objs);
+ graphics.groupLevel = owner.groupLevel;
+
+ this.setFillAndStrokeStyleToContext(tmpCtx, paintType, color);
+
+ this.setScale(width, height, xstep, ystep);
+ this.transformToScale(graphics);
+
+ // transform coordinates to pattern space
+ var tmpTranslate = [1, 0, 0, 1, -topLeft[0], -topLeft[1]];
+ graphics.transform.apply(graphics, tmpTranslate);
+
+ this.clipBbox(graphics, bbox, x0, y0, x1, y1);
+
+ graphics.executeOperatorList(operatorList);
+ return tmpCanvas.canvas;
+ },
+
+ setScale: function TilingPattern_setScale(width, height, xstep, ystep) {
+ this.scale = [width / xstep, height / ystep];
+ },
+
+ transformToScale: function TilingPattern_transformToScale(graphics) {
+ var scale = this.scale;
+ var tmpScale = [scale[0], 0, 0, scale[1], 0, 0];
+ graphics.transform.apply(graphics, tmpScale);
+ },
+
+ scaleToContext: function TilingPattern_scaleToContext() {
+ var scale = this.scale;
+ this.ctx.scale(1 / scale[0], 1 / scale[1]);
+ },
+
+ clipBbox: function clipBbox(graphics, bbox, x0, y0, x1, y1) {
+ if (bbox && isArray(bbox) && 4 == bbox.length) {
+ var bboxWidth = x1 - x0;
+ var bboxHeight = y1 - y0;
+ graphics.rectangle(x0, y0, bboxWidth, bboxHeight);
+ graphics.clip();
+ graphics.endPath();
+ }
+ },
+
+ setFillAndStrokeStyleToContext:
+ function setFillAndStrokeStyleToContext(context, paintType, color) {
+ switch (paintType) {
+ case PaintType.COLORED:
+ var ctx = this.ctx;
+ context.fillStyle = ctx.fillStyle;
+ context.strokeStyle = ctx.strokeStyle;
+ break;
+ case PaintType.UNCOLORED:
+ var rgbColor = ColorSpace.singletons.rgb.getRgb(color, 0);
+ var cssColor = Util.makeCssRgb(rgbColor);
+ context.fillStyle = cssColor;
+ context.strokeStyle = cssColor;
+ break;
+ default:
+ error('Unsupported paint type: ' + paintType);
+ }
+ },
+
+ getPattern: function TilingPattern_getPattern(ctx, owner) {
+ var temporaryPatternCanvas = this.createPatternCanvas(owner);
+
+ var ctx = this.ctx;
+ ctx.setTransform.apply(ctx, this.baseTransform);
+ ctx.transform.apply(ctx, this.matrix);
+ this.scaleToContext();
+
+ return ctx.createPattern(temporaryPatternCanvas, 'repeat');
+ }
+ };
+
+ return TilingPattern;
+})();
+
+
+
+var PDFFunction = (function PDFFunctionClosure() {
+ var CONSTRUCT_SAMPLED = 0;
+ var CONSTRUCT_INTERPOLATED = 2;
+ var CONSTRUCT_STICHED = 3;
+ var CONSTRUCT_POSTSCRIPT = 4;
+
+ return {
+ getSampleArray: function PDFFunction_getSampleArray(size, outputSize, bps,
+ str) {
+ var length = 1;
+ for (var i = 0, ii = size.length; i < ii; i++)
+ length *= size[i];
+ length *= outputSize;
+
+ var array = [];
+ var codeSize = 0;
+ var codeBuf = 0;
+ // 32 is a valid bps so shifting won't work
+ var sampleMul = 1.0 / (Math.pow(2.0, bps) - 1);
+
+ var strBytes = str.getBytes((length * bps + 7) / 8);
+ var strIdx = 0;
+ for (var i = 0; i < length; i++) {
+ while (codeSize < bps) {
+ codeBuf <<= 8;
+ codeBuf |= strBytes[strIdx++];
+ codeSize += 8;
+ }
+ codeSize -= bps;
+ array.push((codeBuf >> codeSize) * sampleMul);
+ codeBuf &= (1 << codeSize) - 1;
+ }
+ return array;
+ },
+
+ getIR: function PDFFunction_getIR(xref, fn) {
+ var dict = fn.dict;
+ if (!dict)
+ dict = fn;
+
+ var types = [this.constructSampled,
+ null,
+ this.constructInterpolated,
+ this.constructStiched,
+ this.constructPostScript];
+
+ var typeNum = dict.get('FunctionType');
+ var typeFn = types[typeNum];
+ if (!typeFn)
+ error('Unknown type of function');
+
+ return typeFn.call(this, fn, dict, xref);
+ },
+
+ fromIR: function PDFFunction_fromIR(IR) {
+ var type = IR[0];
+ switch (type) {
+ case CONSTRUCT_SAMPLED:
+ return this.constructSampledFromIR(IR);
+ case CONSTRUCT_INTERPOLATED:
+ return this.constructInterpolatedFromIR(IR);
+ case CONSTRUCT_STICHED:
+ return this.constructStichedFromIR(IR);
+ //case CONSTRUCT_POSTSCRIPT:
+ default:
+ return this.constructPostScriptFromIR(IR);
+ }
+ },
+
+ parse: function PDFFunction_parse(xref, fn) {
+ var IR = this.getIR(xref, fn);
+ return this.fromIR(IR);
+ },
+
+ constructSampled: function PDFFunction_constructSampled(str, dict) {
+ function toMultiArray(arr) {
+ var inputLength = arr.length;
+ var outputLength = arr.length / 2;
+ var out = [];
+ var index = 0;
+ for (var i = 0; i < inputLength; i += 2) {
+ out[index] = [arr[i], arr[i + 1]];
+ ++index;
+ }
+ return out;
+ }
+ var domain = dict.get('Domain');
+ var range = dict.get('Range');
+
+ if (!domain || !range)
+ error('No domain or range');
+
+ var inputSize = domain.length / 2;
+ var outputSize = range.length / 2;
+
+ domain = toMultiArray(domain);
+ range = toMultiArray(range);
+
+ var size = dict.get('Size');
+ var bps = dict.get('BitsPerSample');
+ var order = dict.get('Order') || 1;
+ if (order !== 1) {
+ // No description how cubic spline interpolation works in PDF32000:2008
+ // As in poppler, ignoring order, linear interpolation may work as good
+ TODO('No support for cubic spline interpolation: ' + order);
+ }
+
+ var encode = dict.get('Encode');
+ if (!encode) {
+ encode = [];
+ for (var i = 0; i < inputSize; ++i) {
+ encode.push(0);
+ encode.push(size[i] - 1);
+ }
+ }
+ encode = toMultiArray(encode);
+
+ var decode = dict.get('Decode');
+ if (!decode)
+ decode = range;
+ else
+ decode = toMultiArray(decode);
+
+ var samples = this.getSampleArray(size, outputSize, bps, str);
+
+ return [
+ CONSTRUCT_SAMPLED, inputSize, domain, encode, decode, samples, size,
+ outputSize, Math.pow(2, bps) - 1, range
+ ];
+ },
+
+ constructSampledFromIR: function PDFFunction_constructSampledFromIR(IR) {
+ // See chapter 3, page 109 of the PDF reference
+ function interpolate(x, xmin, xmax, ymin, ymax) {
+ return ymin + ((x - xmin) * ((ymax - ymin) / (xmax - xmin)));
+ }
+
+ return function constructSampledFromIRResult(args) {
+ // See chapter 3, page 110 of the PDF reference.
+ var m = IR[1];
+ var domain = IR[2];
+ var encode = IR[3];
+ var decode = IR[4];
+ var samples = IR[5];
+ var size = IR[6];
+ var n = IR[7];
+ var mask = IR[8];
+ var range = IR[9];
+
+ if (m != args.length)
+ error('Incorrect number of arguments: ' + m + ' != ' +
+ args.length);
+
+ var x = args;
+
+ // Building the cube vertices: its part and sample index
+ // http://rjwagner49.com/Mathematics/Interpolation.pdf
+ var cubeVertices = 1 << m;
+ var cubeN = new Float64Array(cubeVertices);
+ var cubeVertex = new Uint32Array(cubeVertices);
+ for (var j = 0; j < cubeVertices; j++)
+ cubeN[j] = 1;
+
+ var k = n, pos = 1;
+ // Map x_i to y_j for 0 <= i < m using the sampled function.
+ for (var i = 0; i < m; ++i) {
+ // x_i' = min(max(x_i, Domain_2i), Domain_2i+1)
+ var domain_2i = domain[i][0];
+ var domain_2i_1 = domain[i][1];
+ var xi = Math.min(Math.max(x[i], domain_2i), domain_2i_1);
+
+ // e_i = Interpolate(x_i', Domain_2i, Domain_2i+1,
+ // Encode_2i, Encode_2i+1)
+ var e = interpolate(xi, domain_2i, domain_2i_1,
+ encode[i][0], encode[i][1]);
+
+ // e_i' = min(max(e_i, 0), Size_i - 1)
+ var size_i = size[i];
+ e = Math.min(Math.max(e, 0), size_i - 1);
+
+ // Adjusting the cube: N and vertex sample index
+ var e0 = e < size_i - 1 ? Math.floor(e) : e - 1; // e1 = e0 + 1;
+ var n0 = e0 + 1 - e; // (e1 - e) / (e1 - e0);
+ var n1 = e - e0; // (e - e0) / (e1 - e0);
+ var offset0 = e0 * k;
+ var offset1 = offset0 + k; // e1 * k
+ for (var j = 0; j < cubeVertices; j++) {
+ if (j & pos) {
+ cubeN[j] *= n1;
+ cubeVertex[j] += offset1;
+ } else {
+ cubeN[j] *= n0;
+ cubeVertex[j] += offset0;
+ }
+ }
+
+ k *= size_i;
+ pos <<= 1;
+ }
+
+ var y = new Float64Array(n);
+ for (var j = 0; j < n; ++j) {
+ // Sum all cube vertices' samples portions
+ var rj = 0;
+ for (var i = 0; i < cubeVertices; i++)
+ rj += samples[cubeVertex[i] + j] * cubeN[i];
+
+ // r_j' = Interpolate(r_j, 0, 2^BitsPerSample - 1,
+ // Decode_2j, Decode_2j+1)
+ rj = interpolate(rj, 0, 1, decode[j][0], decode[j][1]);
+
+ // y_j = min(max(r_j, range_2j), range_2j+1)
+ y[j] = Math.min(Math.max(rj, range[j][0]), range[j][1]);
+ }
+
+ return y;
+ };
+ },
+
+ constructInterpolated: function PDFFunction_constructInterpolated(str,
+ dict) {
+ var c0 = dict.get('C0') || [0];
+ var c1 = dict.get('C1') || [1];
+ var n = dict.get('N');
+
+ if (!isArray(c0) || !isArray(c1))
+ error('Illegal dictionary for interpolated function');
+
+ var length = c0.length;
+ var diff = [];
+ for (var i = 0; i < length; ++i)
+ diff.push(c1[i] - c0[i]);
+
+ return [CONSTRUCT_INTERPOLATED, c0, diff, n];
+ },
+
+ constructInterpolatedFromIR:
+ function PDFFunction_constructInterpolatedFromIR(IR) {
+ var c0 = IR[1];
+ var diff = IR[2];
+ var n = IR[3];
+
+ var length = diff.length;
+
+ return function constructInterpolatedFromIRResult(args) {
+ var x = n == 1 ? args[0] : Math.pow(args[0], n);
+
+ var out = [];
+ for (var j = 0; j < length; ++j)
+ out.push(c0[j] + (x * diff[j]));
+
+ return out;
+
+ };
+ },
+
+ constructStiched: function PDFFunction_constructStiched(fn, dict, xref) {
+ var domain = dict.get('Domain');
+
+ if (!domain)
+ error('No domain');
+
+ var inputSize = domain.length / 2;
+ if (inputSize != 1)
+ error('Bad domain for stiched function');
+
+ var fnRefs = dict.get('Functions');
+ var fns = [];
+ for (var i = 0, ii = fnRefs.length; i < ii; ++i)
+ fns.push(PDFFunction.getIR(xref, xref.fetchIfRef(fnRefs[i])));
+
+ var bounds = dict.get('Bounds');
+ var encode = dict.get('Encode');
+
+ return [CONSTRUCT_STICHED, domain, bounds, encode, fns];
+ },
+
+ constructStichedFromIR: function PDFFunction_constructStichedFromIR(IR) {
+ var domain = IR[1];
+ var bounds = IR[2];
+ var encode = IR[3];
+ var fnsIR = IR[4];
+ var fns = [];
+
+ for (var i = 0, ii = fnsIR.length; i < ii; i++) {
+ fns.push(PDFFunction.fromIR(fnsIR[i]));
+ }
+
+ return function constructStichedFromIRResult(args) {
+ var clip = function constructStichedFromIRClip(v, min, max) {
+ if (v > max)
+ v = max;
+ else if (v < min)
+ v = min;
+ return v;
+ };
+
+ // clip to domain
+ var v = clip(args[0], domain[0], domain[1]);
+ // calulate which bound the value is in
+ for (var i = 0, ii = bounds.length; i < ii; ++i) {
+ if (v < bounds[i])
+ break;
+ }
+
+ // encode value into domain of function
+ var dmin = domain[0];
+ if (i > 0)
+ dmin = bounds[i - 1];
+ var dmax = domain[1];
+ if (i < bounds.length)
+ dmax = bounds[i];
+
+ var rmin = encode[2 * i];
+ var rmax = encode[2 * i + 1];
+
+ var v2 = rmin + (v - dmin) * (rmax - rmin) / (dmax - dmin);
+
+ // call the appropropriate function
+ return fns[i]([v2]);
+ };
+ },
+
+ constructPostScript: function PDFFunction_constructPostScript(fn, dict,
+ xref) {
+ var domain = dict.get('Domain');
+ var range = dict.get('Range');
+
+ if (!domain)
+ error('No domain.');
+
+ if (!range)
+ error('No range.');
+
+ var lexer = new PostScriptLexer(fn);
+ var parser = new PostScriptParser(lexer);
+ var code = parser.parse();
+
+ return [CONSTRUCT_POSTSCRIPT, domain, range, code];
+ },
+
+ constructPostScriptFromIR: function PDFFunction_constructPostScriptFromIR(
+ IR) {
+ var domain = IR[1];
+ var range = IR[2];
+ var code = IR[3];
+ var numOutputs = range.length / 2;
+ var evaluator = new PostScriptEvaluator(code);
+ // Cache the values for a big speed up, the cache size is limited though
+ // since the number of possible values can be huge from a PS function.
+ var cache = new FunctionCache();
+ return function constructPostScriptFromIRResult(args) {
+ var initialStack = [];
+ for (var i = 0, ii = (domain.length / 2); i < ii; ++i) {
+ initialStack.push(args[i]);
+ }
+
+ var key = initialStack.join('_');
+ if (cache.has(key))
+ return cache.get(key);
+
+ var stack = evaluator.execute(initialStack);
+ var transformed = [];
+ for (i = numOutputs - 1; i >= 0; --i) {
+ var out = stack.pop();
+ var rangeIndex = 2 * i;
+ if (out < range[rangeIndex])
+ out = range[rangeIndex];
+ else if (out > range[rangeIndex + 1])
+ out = range[rangeIndex + 1];
+ transformed[i] = out;
+ }
+ cache.set(key, transformed);
+ return transformed;
+ };
+ }
+ };
+})();
+
+var FunctionCache = (function FunctionCacheClosure() {
+ // Of 10 PDF's with type4 functions the maxium number of distinct values seen
+ // was 256. This still may need some tweaking in the future though.
+ var MAX_CACHE_SIZE = 1024;
+ function FunctionCache() {
+ this.cache = {};
+ this.total = 0;
+ }
+ FunctionCache.prototype = {
+ has: function FunctionCache_has(key) {
+ return key in this.cache;
+ },
+ get: function FunctionCache_get(key) {
+ return this.cache[key];
+ },
+ set: function FunctionCache_set(key, value) {
+ if (this.total < MAX_CACHE_SIZE) {
+ this.cache[key] = value;
+ this.total++;
+ }
+ }
+ };
+ return FunctionCache;
+})();
+
+var PostScriptStack = (function PostScriptStackClosure() {
+ var MAX_STACK_SIZE = 100;
+ function PostScriptStack(initialStack) {
+ this.stack = initialStack || [];
+ }
+
+ PostScriptStack.prototype = {
+ push: function PostScriptStack_push(value) {
+ if (this.stack.length >= MAX_STACK_SIZE)
+ error('PostScript function stack overflow.');
+ this.stack.push(value);
+ },
+ pop: function PostScriptStack_pop() {
+ if (this.stack.length <= 0)
+ error('PostScript function stack underflow.');
+ return this.stack.pop();
+ },
+ copy: function PostScriptStack_copy(n) {
+ if (this.stack.length + n >= MAX_STACK_SIZE)
+ error('PostScript function stack overflow.');
+ var stack = this.stack;
+ for (var i = stack.length - n, j = n - 1; j >= 0; j--, i++)
+ stack.push(stack[i]);
+ },
+ index: function PostScriptStack_index(n) {
+ this.push(this.stack[this.stack.length - n - 1]);
+ },
+ // rotate the last n stack elements p times
+ roll: function PostScriptStack_roll(n, p) {
+ var stack = this.stack;
+ var l = stack.length - n;
+ var r = stack.length - 1, c = l + (p - Math.floor(p / n) * n), i, j, t;
+ for (i = l, j = r; i < j; i++, j--) {
+ t = stack[i]; stack[i] = stack[j]; stack[j] = t;
+ }
+ for (i = l, j = c - 1; i < j; i++, j--) {
+ t = stack[i]; stack[i] = stack[j]; stack[j] = t;
+ }
+ for (i = c, j = r; i < j; i++, j--) {
+ t = stack[i]; stack[i] = stack[j]; stack[j] = t;
+ }
+ }
+ };
+ return PostScriptStack;
+})();
+var PostScriptEvaluator = (function PostScriptEvaluatorClosure() {
+ function PostScriptEvaluator(operators, operands) {
+ this.operators = operators;
+ this.operands = operands;
+ }
+ PostScriptEvaluator.prototype = {
+ execute: function PostScriptEvaluator_execute(initialStack) {
+ var stack = new PostScriptStack(initialStack);
+ var counter = 0;
+ var operators = this.operators;
+ var length = operators.length;
+ var operator, a, b;
+ while (counter < length) {
+ operator = operators[counter++];
+ if (typeof operator == 'number') {
+ // Operator is really an operand and should be pushed to the stack.
+ stack.push(operator);
+ continue;
+ }
+ switch (operator) {
+ // non standard ps operators
+ case 'jz': // jump if false
+ b = stack.pop();
+ a = stack.pop();
+ if (!a)
+ counter = b;
+ break;
+ case 'j': // jump
+ a = stack.pop();
+ counter = a;
+ break;
+
+ // all ps operators in alphabetical order (excluding if/ifelse)
+ case 'abs':
+ a = stack.pop();
+ stack.push(Math.abs(a));
+ break;
+ case 'add':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(a + b);
+ break;
+ case 'and':
+ b = stack.pop();
+ a = stack.pop();
+ if (isBool(a) && isBool(b))
+ stack.push(a && b);
+ else
+ stack.push(a & b);
+ break;
+ case 'atan':
+ a = stack.pop();
+ stack.push(Math.atan(a));
+ break;
+ case 'bitshift':
+ b = stack.pop();
+ a = stack.pop();
+ if (a > 0)
+ stack.push(a << b);
+ else
+ stack.push(a >> b);
+ break;
+ case 'ceiling':
+ a = stack.pop();
+ stack.push(Math.ceil(a));
+ break;
+ case 'copy':
+ a = stack.pop();
+ stack.copy(a);
+ break;
+ case 'cos':
+ a = stack.pop();
+ stack.push(Math.cos(a));
+ break;
+ case 'cvi':
+ a = stack.pop() | 0;
+ stack.push(a);
+ break;
+ case 'cvr':
+ // noop
+ break;
+ case 'div':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(a / b);
+ break;
+ case 'dup':
+ stack.copy(1);
+ break;
+ case 'eq':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(a == b);
+ break;
+ case 'exch':
+ stack.roll(2, 1);
+ break;
+ case 'exp':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(Math.pow(a, b));
+ break;
+ case 'false':
+ stack.push(false);
+ break;
+ case 'floor':
+ a = stack.pop();
+ stack.push(Math.floor(a));
+ break;
+ case 'ge':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(a >= b);
+ break;
+ case 'gt':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(a > b);
+ break;
+ case 'idiv':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push((a / b) | 0);
+ break;
+ case 'index':
+ a = stack.pop();
+ stack.index(a);
+ break;
+ case 'le':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(a <= b);
+ break;
+ case 'ln':
+ a = stack.pop();
+ stack.push(Math.log(a));
+ break;
+ case 'log':
+ a = stack.pop();
+ stack.push(Math.log(a) / Math.LN10);
+ break;
+ case 'lt':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(a < b);
+ break;
+ case 'mod':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(a % b);
+ break;
+ case 'mul':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(a * b);
+ break;
+ case 'ne':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(a != b);
+ break;
+ case 'neg':
+ a = stack.pop();
+ stack.push(-b);
+ break;
+ case 'not':
+ a = stack.pop();
+ if (isBool(a) && isBool(b))
+ stack.push(a && b);
+ else
+ stack.push(a & b);
+ break;
+ case 'or':
+ b = stack.pop();
+ a = stack.pop();
+ if (isBool(a) && isBool(b))
+ stack.push(a || b);
+ else
+ stack.push(a | b);
+ break;
+ case 'pop':
+ stack.pop();
+ break;
+ case 'roll':
+ b = stack.pop();
+ a = stack.pop();
+ stack.roll(a, b);
+ break;
+ case 'round':
+ a = stack.pop();
+ stack.push(Math.round(a));
+ break;
+ case 'sin':
+ a = stack.pop();
+ stack.push(Math.sin(a));
+ break;
+ case 'sqrt':
+ a = stack.pop();
+ stack.push(Math.sqrt(a));
+ break;
+ case 'sub':
+ b = stack.pop();
+ a = stack.pop();
+ stack.push(a - b);
+ break;
+ case 'true':
+ stack.push(true);
+ break;
+ case 'truncate':
+ a = stack.pop();
+ a = a < 0 ? Math.ceil(a) : Math.floor(a);
+ stack.push(a);
+ break;
+ case 'xor':
+ b = stack.pop();
+ a = stack.pop();
+ if (isBool(a) && isBool(b))
+ stack.push(a != b);
+ else
+ stack.push(a ^ b);
+ break;
+ default:
+ error('Unknown operator ' + operator);
+ break;
+ }
+ }
+ return stack.stack;
+ }
+ };
+ return PostScriptEvaluator;
+})();
+
+var PostScriptParser = (function PostScriptParserClosure() {
+ function PostScriptParser(lexer) {
+ this.lexer = lexer;
+ this.operators = [];
+ this.token = null;
+ this.prev = null;
+ }
+ PostScriptParser.prototype = {
+ nextToken: function PostScriptParser_nextToken() {
+ this.prev = this.token;
+ this.token = this.lexer.getToken();
+ },
+ accept: function PostScriptParser_accept(type) {
+ if (this.token.type == type) {
+ this.nextToken();
+ return true;
+ }
+ return false;
+ },
+ expect: function PostScriptParser_expect(type) {
+ if (this.accept(type))
+ return true;
+ error('Unexpected symbol: found ' + this.token.type + ' expected ' +
+ type + '.');
+ },
+ parse: function PostScriptParser_parse() {
+ this.nextToken();
+ this.expect(PostScriptTokenTypes.LBRACE);
+ this.parseBlock();
+ this.expect(PostScriptTokenTypes.RBRACE);
+ return this.operators;
+ },
+ parseBlock: function PostScriptParser_parseBlock() {
+ while (true) {
+ if (this.accept(PostScriptTokenTypes.NUMBER)) {
+ this.operators.push(this.prev.value);
+ } else if (this.accept(PostScriptTokenTypes.OPERATOR)) {
+ this.operators.push(this.prev.value);
+ } else if (this.accept(PostScriptTokenTypes.LBRACE)) {
+ this.parseCondition();
+ } else {
+ return;
+ }
+ }
+ },
+ parseCondition: function PostScriptParser_parseCondition() {
+ // Add two place holders that will be updated later
+ var conditionLocation = this.operators.length;
+ this.operators.push(null, null);
+
+ this.parseBlock();
+ this.expect(PostScriptTokenTypes.RBRACE);
+ if (this.accept(PostScriptTokenTypes.IF)) {
+ // The true block is right after the 'if' so it just falls through on
+ // true else it jumps and skips the true block.
+ this.operators[conditionLocation] = this.operators.length;
+ this.operators[conditionLocation + 1] = 'jz';
+ } else if (this.accept(PostScriptTokenTypes.LBRACE)) {
+ var jumpLocation = this.operators.length;
+ this.operators.push(null, null);
+ var endOfTrue = this.operators.length;
+ this.parseBlock();
+ this.expect(PostScriptTokenTypes.RBRACE);
+ this.expect(PostScriptTokenTypes.IFELSE);
+ // The jump is added at the end of the true block to skip the false
+ // block.
+ this.operators[jumpLocation] = this.operators.length;
+ this.operators[jumpLocation + 1] = 'j';
+
+ this.operators[conditionLocation] = endOfTrue;
+ this.operators[conditionLocation + 1] = 'jz';
+ } else {
+ error('PS Function: error parsing conditional.');
+ }
+ }
+ };
+ return PostScriptParser;
+})();
+
+var PostScriptTokenTypes = {
+ LBRACE: 0,
+ RBRACE: 1,
+ NUMBER: 2,
+ OPERATOR: 3,
+ IF: 4,
+ IFELSE: 5
+};
+
+var PostScriptToken = (function PostScriptTokenClosure() {
+ function PostScriptToken(type, value) {
+ this.type = type;
+ this.value = value;
+ }
+
+ var opCache = {};
+
+ PostScriptToken.getOperator = function PostScriptToken_getOperator(op) {
+ var opValue = opCache[op];
+ if (opValue)
+ return opValue;
+
+ return opCache[op] = new PostScriptToken(PostScriptTokenTypes.OPERATOR, op);
+ };
+
+ PostScriptToken.LBRACE = new PostScriptToken(PostScriptTokenTypes.LBRACE,
+ '{');
+ PostScriptToken.RBRACE = new PostScriptToken(PostScriptTokenTypes.RBRACE,
+ '}');
+ PostScriptToken.IF = new PostScriptToken(PostScriptTokenTypes.IF, 'IF');
+ PostScriptToken.IFELSE = new PostScriptToken(PostScriptTokenTypes.IFELSE,
+ 'IFELSE');
+ return PostScriptToken;
+})();
+
+var PostScriptLexer = (function PostScriptLexerClosure() {
+ function PostScriptLexer(stream) {
+ this.stream = stream;
+ this.nextChar();
+ }
+ PostScriptLexer.prototype = {
+ nextChar: function PostScriptLexer_nextChar() {
+ return (this.currentChar = this.stream.getByte());
+ },
+ getToken: function PostScriptLexer_getToken() {
+ var s = '';
+ var comment = false;
+ var ch = this.currentChar;
+
+ // skip comments
+ while (true) {
+ if (ch < 0) {
+ return EOF;
+ }
+
+ if (comment) {
+ if (ch === 0x0A || ch === 0x0D) {
+ comment = false;
+ }
+ } else if (ch == 0x25) { // '%'
+ comment = true;
+ } else if (!Lexer.isSpace(ch)) {
+ break;
+ }
+ ch = this.nextChar();
+ }
+ switch (ch | 0) {
+ case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: // '0'-'4'
+ case 0x35: case 0x36: case 0x37: case 0x38: case 0x39: // '5'-'9'
+ case 0x2B: case 0x2D: case 0x2E: // '+', '-', '.'
+ return new PostScriptToken(PostScriptTokenTypes.NUMBER,
+ this.getNumber());
+ case 0x7B: // '{'
+ this.nextChar();
+ return PostScriptToken.LBRACE;
+ case 0x7D: // '}'
+ this.nextChar();
+ return PostScriptToken.RBRACE;
+ }
+ // operator
+ var str = String.fromCharCode(ch);
+ while ((ch = this.nextChar()) >= 0 && // and 'A'-'Z', 'a'-'z'
+ ((ch >= 0x41 && ch <= 0x5A) || (ch >= 0x61 && ch <= 0x7A))) {
+ str += String.fromCharCode(ch);
+ }
+ switch (str.toLowerCase()) {
+ case 'if':
+ return PostScriptToken.IF;
+ case 'ifelse':
+ return PostScriptToken.IFELSE;
+ default:
+ return PostScriptToken.getOperator(str);
+ }
+ },
+ getNumber: function PostScriptLexer_getNumber() {
+ var ch = this.currentChar;
+ var str = String.fromCharCode(ch);
+ while ((ch = this.nextChar()) >= 0) {
+ if ((ch >= 0x30 && ch <= 0x39) || // '0'-'9'
+ ch === 0x2D || ch === 0x2E) { // '-', '.'
+ str += String.fromCharCode(ch);
+ } else {
+ break;
+ }
+ }
+ var value = parseFloat(str);
+ if (isNaN(value))
+ error('Invalid floating point number: ' + value);
+ return value;
+ }
+ };
+ return PostScriptLexer;
+})();
+
+
+
+var Annotation = (function AnnotationClosure() {
+ // 12.5.5: Algorithm: Appearance streams
+ function getTransformMatrix(rect, bbox, matrix) {
+ var bounds = Util.getAxialAlignedBoundingBox(bbox, matrix);
+ var minX = bounds[0];
+ var minY = bounds[1];
+ var maxX = bounds[2];
+ var maxY = bounds[3];
+
+ if (minX === maxX || minY === maxY) {
+ // From real-life file, bbox was [0, 0, 0, 0]. In this case,
+ // just apply the transform for rect
+ return [1, 0, 0, 1, rect[0], rect[1]];
+ }
+
+ var xRatio = (rect[2] - rect[0]) / (maxX - minX);
+ var yRatio = (rect[3] - rect[1]) / (maxY - minY);
+ return [
+ xRatio,
+ 0,
+ 0,
+ yRatio,
+ rect[0] - minX * xRatio,
+ rect[1] - minY * yRatio
+ ];
+ }
+
+ function getDefaultAppearance(dict) {
+ var appearanceState = dict.get('AP');
+ if (!isDict(appearanceState)) {
+ return;
+ }
+
+ var appearance;
+ var appearances = appearanceState.get('N');
+ if (isDict(appearances)) {
+ var as = dict.get('AS');
+ if (as && appearances.has(as.name)) {
+ appearance = appearances.get(as.name);
+ }
+ } else {
+ appearance = appearances;
+ }
+ return appearance;
+ }
+
+ function Annotation(params) {
+ if (params.data) {
+ this.data = params.data;
+ return;
+ }
+
+ var dict = params.dict;
+ var data = this.data = {};
+
+ data.subtype = dict.get('Subtype').name;
+ var rect = dict.get('Rect');
+ data.rect = Util.normalizeRect(rect);
+ data.annotationFlags = dict.get('F');
+
+ var color = dict.get('C');
+ if (isArray(color) && color.length === 3) {
+ // TODO(mack): currently only supporting rgb; need support different
+ // colorspaces
+ data.color = color;
+ } else {
+ data.color = [0, 0, 0];
+ }
+
+ // Some types of annotations have border style dict which has more
+ // info than the border array
+ if (dict.has('BS')) {
+ var borderStyle = dict.get('BS');
+ data.borderWidth = borderStyle.has('W') ? borderStyle.get('W') : 1;
+ } else {
+ var borderArray = dict.get('Border') || [0, 0, 1];
+ data.borderWidth = borderArray[2] || 0;
+ }
+
+ this.appearance = getDefaultAppearance(dict);
+ data.hasAppearance = !!this.appearance;
+ }
+
+ Annotation.prototype = {
+
+ getData: function Annotation_getData() {
+ return this.data;
+ },
+
+ hasHtml: function Annotation_hasHtml() {
+ return false;
+ },
+
+ getHtmlElement: function Annotation_getHtmlElement(commonObjs) {
+ throw new NotImplementedException(
+ 'getHtmlElement() should be implemented in subclass');
+ },
+
+ // TODO(mack): Remove this, it's not really that helpful.
+ getEmptyContainer: function Annotation_getEmptyContainer(tagName, rect) {
+ assert(!isWorker,
+ 'getEmptyContainer() should be called from main thread');
+
+ rect = rect || this.data.rect;
+ var element = document.createElement(tagName);
+ element.style.width = Math.ceil(rect[2] - rect[0]) + 'px';
+ element.style.height = Math.ceil(rect[3] - rect[1]) + 'px';
+ return element;
+ },
+
+ isViewable: function Annotation_isViewable() {
+ var data = this.data;
+ return !!(
+ data &&
+ (!data.annotationFlags ||
+ !(data.annotationFlags & 0x22)) && // Hidden or NoView
+ data.rect // rectangle is nessessary
+ );
+ },
+
+ loadResources: function(keys) {
+ var promise = new Promise();
+ this.appearance.dict.getAsync('Resources').then(function(resources) {
+ if (!resources) {
+ promise.resolve();
+ return;
+ }
+ var objectLoader = new ObjectLoader(resources.map,
+ keys,
+ resources.xref);
+ objectLoader.load().then(function() {
+ promise.resolve(resources);
+ });
+ }.bind(this));
+
+ return promise;
+ },
+
+ getOperatorList: function Annotation_getToOperatorList(evaluator) {
+
+ var promise = new Promise();
+
+ if (!this.appearance) {
+ promise.resolve(new OperatorList());
+ return promise;
+ }
+
+ var data = this.data;
+
+ var appearanceDict = this.appearance.dict;
+ var resourcesPromise = this.loadResources([
+ 'ExtGState',
+ 'ColorSpace',
+ 'Pattern',
+ 'Shading',
+ 'XObject',
+ 'Font'
+ // ProcSet
+ // Properties
+ ]);
+ var bbox = appearanceDict.get('BBox') || [0, 0, 1, 1];
+ var matrix = appearanceDict.get('Matrix') || [1, 0, 0, 1, 0 ,0];
+ var transform = getTransformMatrix(data.rect, bbox, matrix);
+
+ var border = data.border;
+
+ resourcesPromise.then(function(resources) {
+ var opList = new OperatorList();
+ opList.addOp(OPS.beginAnnotation, [data.rect, transform, matrix]);
+ evaluator.getOperatorList(this.appearance, resources, opList);
+ opList.addOp(OPS.endAnnotation, []);
+ promise.resolve(opList);
+ }.bind(this));
+
+ return promise;
+ }
+ };
+
+ Annotation.getConstructor =
+ function Annotation_getConstructor(subtype, fieldType) {
+
+ if (!subtype) {
+ return;
+ }
+
+ // TODO(mack): Implement FreeText annotations
+ if (subtype === 'Link') {
+ return LinkAnnotation;
+ } else if (subtype === 'Text') {
+ return TextAnnotation;
+ } else if (subtype === 'Widget') {
+ if (!fieldType) {
+ return;
+ }
+
+ if (fieldType === 'Tx') {
+ return TextWidgetAnnotation;
+ } else {
+ return WidgetAnnotation;
+ }
+ } else {
+ return Annotation;
+ }
+ };
+
+ // TODO(mack): Support loading annotation from data
+ Annotation.fromData = function Annotation_fromData(data) {
+ var subtype = data.subtype;
+ var fieldType = data.fieldType;
+ var Constructor = Annotation.getConstructor(subtype, fieldType);
+ if (Constructor) {
+ return new Constructor({ data: data });
+ }
+ };
+
+ Annotation.fromRef = function Annotation_fromRef(xref, ref) {
+
+ var dict = xref.fetchIfRef(ref);
+ if (!isDict(dict)) {
+ return;
+ }
+
+ var subtype = dict.get('Subtype');
+ subtype = isName(subtype) ? subtype.name : '';
+ if (!subtype) {
+ return;
+ }
+
+ var fieldType = Util.getInheritableProperty(dict, 'FT');
+ fieldType = isName(fieldType) ? fieldType.name : '';
+
+ var Constructor = Annotation.getConstructor(subtype, fieldType);
+ if (!Constructor) {
+ return;
+ }
+
+ var params = {
+ dict: dict,
+ ref: ref,
+ };
+
+ var annotation = new Constructor(params);
+
+ if (annotation.isViewable()) {
+ return annotation;
+ } else {
+ TODO('unimplemented annotation type: ' + subtype);
+ }
+ };
+
+ Annotation.appendToOperatorList = function Annotation_appendToOperatorList(
+ annotations, opList, pdfManager, partialEvaluator) {
+
+ function reject(e) {
+ annotationsReadyPromise.reject(e);
+ }
+
+ var annotationsReadyPromise = new Promise();
+
+ var annotationPromises = [];
+ for (var i = 0, n = annotations.length; i < n; ++i) {
+ annotationPromises.push(annotations[i].getOperatorList(partialEvaluator));
+ }
+ Promise.all(annotationPromises).then(function(datas) {
+ opList.addOp(OPS.beginAnnotations, []);
+ for (var i = 0, n = datas.length; i < n; ++i) {
+ var annotOpList = datas[i];
+ opList.addOpList(annotOpList);
+ }
+ opList.addOp(OPS.endAnnotations, []);
+ annotationsReadyPromise.resolve();
+ }, reject);
+
+ return annotationsReadyPromise;
+ };
+
+ return Annotation;
+})();
+PDFJS.Annotation = Annotation;
+
+
+var WidgetAnnotation = (function WidgetAnnotationClosure() {
+
+ function WidgetAnnotation(params) {
+ Annotation.call(this, params);
+
+ if (params.data) {
+ return;
+ }
+
+ var dict = params.dict;
+ var data = this.data;
+
+ data.fieldValue = stringToPDFString(
+ Util.getInheritableProperty(dict, 'V') || '');
+ data.alternativeText = stringToPDFString(dict.get('TU') || '');
+ data.defaultAppearance = Util.getInheritableProperty(dict, 'DA') || '';
+ var fieldType = Util.getInheritableProperty(dict, 'FT');
+ data.fieldType = isName(fieldType) ? fieldType.name : '';
+ data.fieldFlags = Util.getInheritableProperty(dict, 'Ff') || 0;
+ this.fieldResources = Util.getInheritableProperty(dict, 'DR') || new Dict();
+
+ // Building the full field name by collecting the field and
+ // its ancestors 'T' data and joining them using '.'.
+ var fieldName = [];
+ var namedItem = dict;
+ var ref = params.ref;
+ while (namedItem) {
+ var parent = namedItem.get('Parent');
+ var parentRef = namedItem.getRaw('Parent');
+ var name = namedItem.get('T');
+ if (name) {
+ fieldName.unshift(stringToPDFString(name));
+ } else {
+ // The field name is absent, that means more than one field
+ // with the same name may exist. Replacing the empty name
+ // with the '`' plus index in the parent's 'Kids' array.
+ // This is not in the PDF spec but necessary to id the
+ // the input controls.
+ var kids = parent.get('Kids');
+ var j, jj;
+ for (j = 0, jj = kids.length; j < jj; j++) {
+ var kidRef = kids[j];
+ if (kidRef.num == ref.num && kidRef.gen == ref.gen)
+ break;
+ }
+ fieldName.unshift('`' + j);
+ }
+ namedItem = parent;
+ ref = parentRef;
+ }
+ data.fullName = fieldName.join('.');
+ }
+
+ var parent = Annotation.prototype;
+ Util.inherit(WidgetAnnotation, Annotation, {
+ isViewable: function WidgetAnnotation_isViewable() {
+ if (this.data.fieldType === 'Sig') {
+ TODO('unimplemented annotation type: Widget signature');
+ return false;
+ }
+
+ return parent.isViewable.call(this);
+ }
+ });
+
+ return WidgetAnnotation;
+})();
+
+var TextWidgetAnnotation = (function TextWidgetAnnotationClosure() {
+ function TextWidgetAnnotation(params) {
+ WidgetAnnotation.call(this, params);
+
+ if (params.data) {
+ return;
+ }
+
+ this.data.textAlignment = Util.getInheritableProperty(params.dict, 'Q');
+ }
+
+ // TODO(mack): This dupes some of the logic in CanvasGraphics.setFont()
+ function setTextStyles(element, item, fontObj) {
+
+ var style = element.style;
+ style.fontSize = item.fontSize + 'px';
+ style.direction = item.fontDirection < 0 ? 'rtl': 'ltr';
+
+ if (!fontObj) {
+ return;
+ }
+
+ style.fontWeight = fontObj.black ?
+ (fontObj.bold ? 'bolder' : 'bold') :
+ (fontObj.bold ? 'bold' : 'normal');
+ style.fontStyle = fontObj.italic ? 'italic' : 'normal';
+
+ var fontName = fontObj.loadedName;
+ var fontFamily = fontName ? '"' + fontName + '", ' : '';
+ // Use a reasonable default font if the font doesn't specify a fallback
+ var fallbackName = fontObj.fallbackName || 'Helvetica, sans-serif';
+ style.fontFamily = fontFamily + fallbackName;
+ }
+
+
+ var parent = WidgetAnnotation.prototype;
+ Util.inherit(TextWidgetAnnotation, WidgetAnnotation, {
+ hasHtml: function TextWidgetAnnotation_hasHtml() {
+ return !this.data.hasAppearance && !!this.data.fieldValue;
+ },
+
+ getHtmlElement: function TextWidgetAnnotation_getHtmlElement(commonObjs) {
+ assert(!isWorker, 'getHtmlElement() shall be called from main thread');
+
+ var item = this.data;
+
+ var element = this.getEmptyContainer('div');
+ element.style.display = 'table';
+
+ var content = document.createElement('div');
+ content.textContent = item.fieldValue;
+ var textAlignment = item.textAlignment;
+ content.style.textAlign = ['left', 'center', 'right'][textAlignment];
+ content.style.verticalAlign = 'middle';
+ content.style.display = 'table-cell';
+
+ var fontObj = item.fontRefName ?
+ commonObjs.getData(item.fontRefName) : null;
+ var cssRules = setTextStyles(content, item, fontObj);
+
+ element.appendChild(content);
+
+ return element;
+ },
+
+ getOperatorList: function TextWidgetAnnotation_getOperatorList(evaluator) {
+ if (this.appearance) {
+ return Annotation.prototype.getOperatorList.call(this, evaluator);
+ }
+
+ var promise = new Promise();
+ var opList = new OperatorList();
+ var data = this.data;
+
+ // Even if there is an appearance stream, ignore it. This is the
+ // behaviour used by Adobe Reader.
+
+ var defaultAppearance = data.defaultAppearance;
+ if (!defaultAppearance) {
+ promise.resolve(opList);
+ return promise;
+ }
+
+ // Include any font resources found in the default appearance
+
+ var stream = new Stream(stringToBytes(defaultAppearance));
+ evaluator.getOperatorList(stream, this.fieldResources, opList);
+ var appearanceFnArray = opList.fnArray;
+ var appearanceArgsArray = opList.argsArray;
+ var fnArray = [];
+ var argsArray = [];
+
+ // TODO(mack): Add support for stroke color
+ data.rgb = [0, 0, 0];
+ // TODO THIS DOESN'T MAKE ANY SENSE SINCE THE fnArray IS EMPTY!
+ for (var i = 0, n = fnArray.length; i < n; ++i) {
+ var fnId = appearanceFnArray[i];
+ var args = appearanceArgsArray[i];
+
+ if (fnId === OPS.setFont) {
+ data.fontRefName = args[0];
+ var size = args[1];
+ if (size < 0) {
+ data.fontDirection = -1;
+ data.fontSize = -size;
+ } else {
+ data.fontDirection = 1;
+ data.fontSize = size;
+ }
+ } else if (fnId === OPS.setFillRGBColor) {
+ data.rgb = args;
+ } else if (fnId === OPS.setFillGray) {
+ var rgbValue = args[0] * 255;
+ data.rgb = [rgbValue, rgbValue, rgbValue];
+ }
+ }
+ promise.resolve(opList);
+ return promise;
+ }
+ });
+
+ return TextWidgetAnnotation;
+})();
+
+var TextAnnotation = (function TextAnnotationClosure() {
+ function TextAnnotation(params) {
+ Annotation.call(this, params);
+
+ if (params.data) {
+ return;
+ }
+
+ var dict = params.dict;
+ var data = this.data;
+
+ var content = dict.get('Contents');
+ var title = dict.get('T');
+ data.content = stringToPDFString(content || '');
+ data.title = stringToPDFString(title || '');
+ data.name = !dict.has('Name') ? 'Note' : dict.get('Name').name;
+ }
+
+ var ANNOT_MIN_SIZE = 10;
+
+ Util.inherit(TextAnnotation, Annotation, {
+
+ getOperatorList: function TextAnnotation_getOperatorList(evaluator) {
+ var promise = new Promise();
+ promise.resolve(new OperatorList());
+ return promise;
+ },
+
+ hasHtml: function TextAnnotation_hasHtml() {
+ return true;
+ },
+
+ getHtmlElement: function TextAnnotation_getHtmlElement(commonObjs) {
+ assert(!isWorker, 'getHtmlElement() shall be called from main thread');
+
+ var item = this.data;
+ var rect = item.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 container = this.getEmptyContainer('section', rect);
+ container.className = 'annotText';
+
+ var image = document.createElement('img');
+ image.style.height = container.style.height;
+ var iconName = item.name;
+ image.src = PDFJS.imageResourcesPath + 'annotation-' +
+ iconName.toLowerCase() + '.svg';
+ image.alt = '[{{type}} Annotation]';
+ image.dataset.l10nId = 'text_annotation_type';
+ image.dataset.l10nArgs = JSON.stringify({type: iconName});
+ 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] - rect[0]) + 'px';
+ content.style.top = '0px';
+ 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);
+
+ var showAnnotation = function showAnnotation() {
+ container.style.zIndex += 1;
+ content.removeAttribute('hidden');
+ };
+
+ var hideAnnotation = function hideAnnotation(e) {
+ if (e.toElement || e.relatedTarget) { // No context menu is used
+ container.style.zIndex -= 1;
+ content.setAttribute('hidden', true);
+ }
+ };
+
+ content.addEventListener('mouseover', showAnnotation, false);
+ content.addEventListener('mouseout', hideAnnotation, false);
+ image.addEventListener('mouseover', showAnnotation, false);
+ image.addEventListener('mouseout', hideAnnotation, false);
+ }
+
+ content.appendChild(title);
+ content.appendChild(text);
+ container.appendChild(image);
+ container.appendChild(content);
+
+ return container;
+ }
+ });
+
+ return TextAnnotation;
+})();
+
+var LinkAnnotation = (function LinkAnnotationClosure() {
+ function LinkAnnotation(params) {
+ Annotation.call(this, params);
+
+ if (params.data) {
+ return;
+ }
+
+ var dict = params.dict;
+ var data = this.data;
+
+ var action = dict.get('A');
+ if (action) {
+ var linkType = action.get('S').name;
+ if (linkType === 'URI') {
+ var url = addDefaultProtocolToUrl(action.get('URI'));
+ // TODO: pdf spec mentions urls can be relative to a Base
+ // entry in the dictionary.
+ if (!isValidUrl(url, false)) {
+ url = '';
+ }
+ data.url = url;
+ } else if (linkType === 'GoTo') {
+ data.dest = action.get('D');
+ } else if (linkType === 'GoToR') {
+ var urlDict = action.get('F');
+ if (isDict(urlDict)) {
+ // We assume that the 'url' is a Filspec dictionary
+ // and fetch the url without checking any further
+ url = urlDict.get('F') || '';
+ }
+
+ // TODO: pdf reference says that GoToR
+ // can also have 'NewWindow' attribute
+ if (!isValidUrl(url, false)) {
+ url = '';
+ }
+ data.url = url;
+ data.dest = action.get('D');
+ } else if (linkType === 'Named') {
+ data.action = action.get('N').name;
+ } else {
+ TODO('unrecognized link type: ' + linkType);
+ }
+ } else if (dict.has('Dest')) {
+ // simple destination link
+ var dest = dict.get('Dest');
+ data.dest = isName(dest) ? dest.name : dest;
+ }
+ }
+
+ // Lets URLs beginning with 'www.' default to using the 'http://' protocol.
+ function addDefaultProtocolToUrl(url) {
+ if (url.indexOf('www.') === 0) {
+ return ('http://' + url);
+ }
+ return url;
+ }
+
+ Util.inherit(LinkAnnotation, Annotation, {
+ hasOperatorList: function LinkAnnotation_hasOperatorList() {
+ return false;
+ },
+
+ hasHtml: function LinkAnnotation_hasHtml() {
+ return true;
+ },
+
+ getHtmlElement: function LinkAnnotation_getHtmlElement(commonObjs) {
+ var rect = this.data.rect;
+ var element = document.createElement('a');
+ var borderWidth = this.data.borderWidth;
+
+ element.style.borderWidth = borderWidth + 'px';
+ var color = this.data.color;
+ var rgb = [];
+ for (var i = 0; i < 3; ++i) {
+ rgb[i] = Math.round(color[i] * 255);
+ }
+ element.style.borderColor = Util.makeCssRgb(rgb);
+ element.style.borderStyle = 'solid';
+
+ var width = rect[2] - rect[0] - 2 * borderWidth;
+ var height = rect[3] - rect[1] - 2 * borderWidth;
+ element.style.width = width + 'px';
+ element.style.height = height + 'px';
+
+ element.href = this.data.url || '';
+ return element;
+ }
+ });
+
+ return LinkAnnotation;
+})();
+
+
+/**
+ * The maximum allowed image size in total pixels e.g. width * height. Images
+ * above this value will not be drawn. Use -1 for no limit.
+ * @var {Number}
+ */
+PDFJS.maxImageSize = PDFJS.maxImageSize === undefined ? -1 : PDFJS.maxImageSize;
+
+/**
+ * By default fonts are converted to OpenType fonts and loaded via font face
+ * rules. If disabled, the font will be rendered using a built in font renderer
+ * that constructs the glyphs with primitive path commands.
+ * @var {Boolean}
+ */
+PDFJS.disableFontFace = PDFJS.disableFontFace === undefined ?
+ false : PDFJS.disableFontFace;
+
+/**
+ * Path for image resources, mainly for annotation icons. Include trailing
+ * slash.
+ * @var {String}
+ */
+PDFJS.imageResourcesPath = PDFJS.imageResourcesPath === undefined ?
+ '' : PDFJS.imageResourcesPath;
+
+/**
+ * Disable the web worker and run all code on the main thread. This will happen
+ * automatically if the browser doesn't support workers or sending typed arrays
+ * to workers.
+ * @var {Boolean}
+ */
+PDFJS.disableWorker = PDFJS.disableWorker === undefined ?
+ false : PDFJS.disableWorker;
+
+/**
+ * Path and filename of the worker file. Required when the worker is enabled in
+ * development mode. If unspecified in the production build, the worker will be
+ * loaded based on the location of the pdf.js file.
+ * @var {String}
+ */
+PDFJS.workerSrc = PDFJS.workerSrc === undefined ? null : PDFJS.workerSrc;
+
+/**
+ * Disable range request loading of PDF files. When enabled and if the server
+ * supports partial content requests then the PDF will be fetched in chunks.
+ * Enabled (false) by default.
+ * @var {Boolean}
+ */
+PDFJS.disableRange = PDFJS.disableRange === undefined ?
+ false : PDFJS.disableRange;
+
+/**
+ * Disable pre-fetching of PDF file data. When range requests are enabled PDF.js
+ * will automatically keep fetching more data even if it isn't needed to display
+ * the current page. This default behavior can be disabled.
+ * @var {Boolean}
+ */
+PDFJS.disableAutoFetch = PDFJS.disableAutoFetch === undefined ?
+ false : PDFJS.disableAutoFetch;
+
+/**
+ * Enables special hooks for debugging PDF.js.
+ * @var {Boolean}
+ */
+PDFJS.pdfBug = PDFJS.pdfBug === undefined ? false : PDFJS.pdfBug;
+
+/**
+ * Enables transfer usage in postMessage for ArrayBuffers.
+ * @var {boolean}
+ */
+PDFJS.postMessageTransfers = PDFJS.postMessageTransfers === undefined ?
+ true : PDFJS.postMessageTransfers;
+/**
+ * This is the main entry point for loading a PDF and interacting with it.
+ * NOTE: If a URL is used to fetch the PDF data a standard XMLHttpRequest(XHR)
+ * is used, which means it must follow the same origin rules that any XHR does
+ * e.g. No cross domain requests without CORS.
+ *
+ * @param {string|TypedAray|object} source Can be an url to where a PDF is
+ * located, a typed array (Uint8Array) already populated with data or
+ * and parameter object with the following possible fields:
+ * - url - The URL of the PDF.
+ * - data - A typed array with PDF data.
+ * - httpHeaders - Basic authentication headers.
+ * - password - For decrypting password-protected PDFs.
+ * - initialData - A typed array with the first portion or all of the pdf data.
+ * Used by the extension since some data is already loaded
+ * before the switch to range requests.
+ *
+ * @param {object} pdfDataRangeTransport is optional. It is used if you want
+ * to manually serve range requests for data in the PDF. See viewer.js for
+ * an example of pdfDataRangeTransport's interface.
+ *
+ * @param {function} passwordCallback is optional. It is used to request a
+ * password if wrong or no password was provided. The callback receives two
+ * parameters: function that needs to be called with new password and reason
+ * (see {PasswordResponses}).
+ *
+ * @return {Promise} A promise that is resolved with {PDFDocumentProxy} object.
+ */
+PDFJS.getDocument = function getDocument(source,
+ pdfDataRangeTransport,
+ passwordCallback,
+ progressCallback) {
+ var workerInitializedPromise, workerReadyPromise, transport;
+
+ if (typeof source === 'string') {
+ source = { url: source };
+ } else if (isArrayBuffer(source)) {
+ source = { data: source };
+ } else if (typeof source !== 'object') {
+ error('Invalid parameter in getDocument, need either Uint8Array, ' +
+ 'string or a parameter object');
+ }
+
+ if (!source.url && !source.data)
+ error('Invalid parameter array, need either .data or .url');
+
+ // copy/use all keys as is except 'url' -- full path is required
+ var params = {};
+ for (var key in source) {
+ if (key === 'url' && typeof window !== 'undefined') {
+ params[key] = combineUrl(window.location.href, source[key]);
+ continue;
+ }
+ params[key] = source[key];
+ }
+
+ workerInitializedPromise = new PDFJS.Promise();
+ workerReadyPromise = new PDFJS.Promise();
+ transport = new WorkerTransport(workerInitializedPromise,
+ workerReadyPromise, pdfDataRangeTransport, progressCallback);
+ workerInitializedPromise.then(function transportInitialized() {
+ transport.passwordCallback = passwordCallback;
+ transport.fetchDocument(params);
+ });
+ return workerReadyPromise;
+};
+
+/**
+ * Proxy to a PDFDocument in the worker thread. Also, contains commonly used
+ * properties that can be read synchronously.
+ */
+var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
+ function PDFDocumentProxy(pdfInfo, transport) {
+ this.pdfInfo = pdfInfo;
+ this.transport = transport;
+ }
+ PDFDocumentProxy.prototype = {
+ /**
+ * @return {number} Total number of pages the PDF contains.
+ */
+ get numPages() {
+ return this.pdfInfo.numPages;
+ },
+ /**
+ * @return {string} A unique ID to identify a PDF. Not guaranteed to be
+ * unique.
+ */
+ get fingerprint() {
+ return this.pdfInfo.fingerprint;
+ },
+ /**
+ * @return {boolean} true if embedded document fonts are in use. Will be
+ * set during rendering of the pages.
+ */
+ get embeddedFontsUsed() {
+ return this.transport.embeddedFontsUsed;
+ },
+ /**
+ * @param {number} The page number to get. The first page is 1.
+ * @return {Promise} A promise that is resolved with a {PDFPageProxy}
+ * object.
+ */
+ getPage: function PDFDocumentProxy_getPage(number) {
+ return this.transport.getPage(number);
+ },
+ /**
+ * @param {object} Must have 'num' and 'gen' properties.
+ * @return {Promise} A promise that is resolved with the page index that is
+ * associated with the reference.
+ */
+ getPageIndex: function PDFDocumentProxy_getPageIndex(ref) {
+ return this.transport.getPageIndex(ref);
+ },
+ /**
+ * @return {Promise} A promise that is resolved with a lookup table for
+ * mapping named destinations to reference numbers.
+ */
+ getDestinations: function PDFDocumentProxy_getDestinations() {
+ return this.transport.getDestinations();
+ },
+ /**
+ * @return {Promise} A promise that is resolved with an array of all the
+ * JavaScript strings in the name tree.
+ */
+ getJavaScript: function PDFDocumentProxy_getDestinations() {
+ var promise = new PDFJS.Promise();
+ var js = this.pdfInfo.javaScript;
+ promise.resolve(js);
+ return promise;
+ },
+ /**
+ * @return {Promise} A promise that is resolved with an {array} that is a
+ * tree outline (if it has one) of the PDF. The tree is in the format of:
+ * [
+ * {
+ * title: string,
+ * bold: boolean,
+ * italic: boolean,
+ * color: rgb array,
+ * dest: dest obj,
+ * items: array of more items like this
+ * },
+ * ...
+ * ].
+ */
+ getOutline: function PDFDocumentProxy_getOutline() {
+ var promise = new PDFJS.Promise();
+ var outline = this.pdfInfo.outline;
+ promise.resolve(outline);
+ return promise;
+ },
+ /**
+ * @return {Promise} A promise that is resolved with an {object} that has
+ * info and metadata properties. Info is an {object} filled with anything
+ * available in the information dictionary and similarly metadata is a
+ * {Metadata} object with information from the metadata section of the PDF.
+ */
+ getMetadata: function PDFDocumentProxy_getMetadata() {
+ var promise = new PDFJS.Promise();
+ var info = this.pdfInfo.info;
+ var metadata = this.pdfInfo.metadata;
+ promise.resolve({
+ info: info,
+ metadata: metadata ? new PDFJS.Metadata(metadata) : null
+ });
+ return promise;
+ },
+ isEncrypted: function PDFDocumentProxy_isEncrypted() {
+ var promise = new PDFJS.Promise();
+ promise.resolve(this.pdfInfo.encrypted);
+ return promise;
+ },
+ /**
+ * @return {Promise} A promise that is resolved with a TypedArray that has
+ * the raw data from the PDF.
+ */
+ getData: function PDFDocumentProxy_getData() {
+ var promise = new PDFJS.Promise();
+ this.transport.getData(promise);
+ return promise;
+ },
+ /**
+ * @return {Promise} A promise that is resolved when the document's data
+ * is loaded
+ */
+ dataLoaded: function PDFDocumentProxy_dataLoaded() {
+ return this.transport.dataLoaded();
+ },
+ cleanup: function PDFDocumentProxy_cleanup() {
+ this.transport.startCleanup();
+ },
+ destroy: function PDFDocumentProxy_destroy() {
+ this.transport.destroy();
+ }
+ };
+ return PDFDocumentProxy;
+})();
+
+var PDFPageProxy = (function PDFPageProxyClosure() {
+ function PDFPageProxy(pageInfo, transport) {
+ this.pageInfo = pageInfo;
+ this.transport = transport;
+ this.stats = new StatTimer();
+ this.stats.enabled = !!globalScope.PDFJS.enableStats;
+ this.commonObjs = transport.commonObjs;
+ this.objs = new PDFObjects();
+ this.receivingOperatorList = false;
+ this.cleanupAfterRender = false;
+ this.pendingDestroy = false;
+ this.renderTasks = [];
+ }
+ PDFPageProxy.prototype = {
+ /**
+ * @return {number} Page number of the page. First page is 1.
+ */
+ get pageNumber() {
+ return this.pageInfo.pageIndex + 1;
+ },
+ /**
+ * @return {number} The number of degrees the page is rotated clockwise.
+ */
+ get rotate() {
+ return this.pageInfo.rotate;
+ },
+ /**
+ * @return {object} The reference that points to this page. It has 'num' and
+ * 'gen' properties.
+ */
+ get ref() {
+ return this.pageInfo.ref;
+ },
+ /**
+ * @return {array} An array of the visible portion of the PDF page in the
+ * user space units - [x1, y1, x2, y2].
+ */
+ get view() {
+ return this.pageInfo.view;
+ },
+ /**
+ * @param {number} scale The desired scale of the viewport.
+ * @param {number} rotate Degrees to rotate the viewport. If omitted this
+ * defaults to the page rotation.
+ * @return {PageViewport} Contains 'width' and 'height' properties along
+ * with transforms required for rendering.
+ */
+ getViewport: function PDFPageProxy_getViewport(scale, rotate) {
+ if (arguments.length < 2)
+ rotate = this.rotate;
+ return new PDFJS.PageViewport(this.view, scale, rotate, 0, 0);
+ },
+ /**
+ * @return {Promise} A promise that is resolved with an {array} of the
+ * annotation objects.
+ */
+ getAnnotations: function PDFPageProxy_getAnnotations() {
+ if (this.annotationsPromise)
+ return this.annotationsPromise;
+
+ var promise = new PDFJS.Promise();
+ this.annotationsPromise = promise;
+ this.transport.getAnnotations(this.pageInfo.pageIndex);
+ return promise;
+ },
+ /**
+ * Begins the process of rendering a page to the desired context.
+ * @param {object} params A parameter object that supports:
+ * {
+ * canvasContext(required): A 2D context of a DOM Canvas object.,
+ * textLayer(optional): An object that has beginLayout, endLayout, and
+ * appendText functions.,
+ * imageLayer(optional): An object that has beginLayout, endLayout and
+ * appendImage functions.,
+ * continueCallback(optional): A function that will be called each time
+ * the rendering is paused. To continue
+ * rendering call the function that is the
+ * first argument to the callback.
+ * }.
+ * @return {RenderTask} An extended promise that is resolved when the page
+ * finishes rendering (see RenderTask).
+ */
+ render: function PDFPageProxy_render(params) {
+ var stats = this.stats;
+ stats.time('Overall');
+
+ // If there was a pending destroy cancel it so no cleanup happens during
+ // this call to render.
+ this.pendingDestroy = false;
+
+ // If there is no displayReadyPromise yet, then the operatorList was never
+ // requested before. Make the request and create the promise.
+ if (!this.displayReadyPromise) {
+ this.receivingOperatorList = true;
+ this.displayReadyPromise = new Promise();
+ this.operatorList = {
+ fnArray: [],
+ argsArray: [],
+ lastChunk: false
+ };
+
+ this.stats.time('Page Request');
+ this.transport.messageHandler.send('RenderPageRequest', {
+ pageIndex: this.pageNumber - 1
+ });
+ }
+
+ var internalRenderTask = new InternalRenderTask(complete, params,
+ this.objs, this.commonObjs,
+ this.operatorList, this.pageNumber);
+ this.renderTasks.push(internalRenderTask);
+ var renderTask = new RenderTask(internalRenderTask);
+
+ var self = this;
+ this.displayReadyPromise.then(
+ function pageDisplayReadyPromise(transparency) {
+ if (self.pendingDestroy) {
+ complete();
+ return;
+ }
+ stats.time('Rendering');
+ internalRenderTask.initalizeGraphics(transparency);
+ internalRenderTask.operatorListChanged();
+ },
+ function pageDisplayReadPromiseError(reason) {
+ complete(reason);
+ }
+ );
+
+ function complete(error) {
+ var i = self.renderTasks.indexOf(internalRenderTask);
+ if (i >= 0) {
+ self.renderTasks.splice(i, 1);
+ }
+
+ if (self.cleanupAfterRender) {
+ self.pendingDestroy = true;
+ }
+ self._tryDestroy();
+
+ if (error) {
+ renderTask.reject(error);
+ } else {
+ renderTask.resolve();
+ }
+ stats.timeEnd('Rendering');
+ stats.timeEnd('Overall');
+ }
+
+ return renderTask;
+ },
+ /**
+ * @return {Promise} That is resolved with the a {string} that is the text
+ * content from the page.
+ */
+ getTextContent: function PDFPageProxy_getTextContent() {
+ var promise = new PDFJS.Promise();
+ this.transport.messageHandler.send('GetTextContent', {
+ pageIndex: this.pageNumber - 1
+ },
+ function textContentCallback(textContent) {
+ promise.resolve(textContent);
+ }
+ );
+ return promise;
+ },
+ /**
+ * Stub for future feature.
+ */
+ getOperationList: function PDFPageProxy_getOperationList() {
+ var promise = new PDFJS.Promise();
+ var operationList = { // not implemented
+ dependencyFontsID: null,
+ operatorList: null
+ };
+ promise.resolve(operationList);
+ return promise;
+ },
+ /**
+ * Destroys resources allocated by the page.
+ */
+ destroy: function PDFPageProxy_destroy() {
+ this.pendingDestroy = true;
+ this._tryDestroy();
+ },
+ /**
+ * For internal use only. Attempts to clean up if rendering is in a state
+ * where that's possible.
+ */
+ _tryDestroy: function PDFPageProxy__destroy() {
+ if (!this.pendingDestroy ||
+ this.renderTasks.length !== 0 ||
+ this.receivingOperatorList) {
+ return;
+ }
+
+ delete this.operatorList;
+ delete this.displayReadyPromise;
+ this.objs.clear();
+ this.pendingDestroy = false;
+ },
+ /**
+ * For internal use only.
+ */
+ _startRenderPage: function PDFPageProxy_startRenderPage(transparency) {
+ this.displayReadyPromise.resolve(transparency);
+ },
+ /**
+ * For internal use only.
+ */
+ _renderPageChunk: function PDFPageProxy_renderPageChunk(operatorListChunk) {
+ // Add the new chunk to the current operator list.
+ for (var i = 0, ii = operatorListChunk.length; i < ii; i++) {
+ this.operatorList.fnArray.push(operatorListChunk.fnArray[i]);
+ this.operatorList.argsArray.push(operatorListChunk.argsArray[i]);
+ }
+ this.operatorList.lastChunk = operatorListChunk.lastChunk;
+
+ // Notify all the rendering tasks there are more operators to be consumed.
+ for (var i = 0; i < this.renderTasks.length; i++) {
+ this.renderTasks[i].operatorListChanged();
+ }
+
+ if (operatorListChunk.lastChunk) {
+ this.receivingOperatorList = false;
+ this._tryDestroy();
+ }
+ }
+ };
+ return PDFPageProxy;
+})();
+/**
+ * For internal use only.
+ */
+var WorkerTransport = (function WorkerTransportClosure() {
+ function WorkerTransport(workerInitializedPromise, workerReadyPromise,
+ pdfDataRangeTransport, progressCallback) {
+ this.pdfDataRangeTransport = pdfDataRangeTransport;
+
+ this.workerReadyPromise = workerReadyPromise;
+ this.progressCallback = progressCallback;
+ this.commonObjs = new PDFObjects();
+
+ this.pageCache = [];
+ this.pagePromises = [];
+ this.embeddedFontsUsed = false;
+
+ this.passwordCallback = null;
+
+ // If worker support isn't disabled explicit and the browser has worker
+ // support, create a new web worker and test if it/the browser fullfills
+ // all requirements to run parts of pdf.js in a web worker.
+ // Right now, the requirement is, that an Uint8Array is still an Uint8Array
+ // as it arrives on the worker. Chrome added this with version 15.
+ if (!globalScope.PDFJS.disableWorker && typeof Worker !== 'undefined') {
+ var workerSrc = PDFJS.workerSrc;
+ if (!workerSrc) {
+ error('No PDFJS.workerSrc specified');
+ }
+
+ try {
+ // Some versions of FF can't create a worker on localhost, see:
+ // https://bugzilla.mozilla.org/show_bug.cgi?id=683280
+ var worker = new Worker(workerSrc);
+ var messageHandler = new MessageHandler('main', worker);
+ this.messageHandler = messageHandler;
+
+ messageHandler.on('test', function transportTest(data) {
+ var supportTypedArray = data && data.supportTypedArray;
+ if (supportTypedArray) {
+ this.worker = worker;
+ if (!data.supportTransfers) {
+ PDFJS.postMessageTransfers = false;
+ }
+ this.setupMessageHandler(messageHandler);
+ workerInitializedPromise.resolve();
+ } else {
+ globalScope.PDFJS.disableWorker = true;
+ this.loadFakeWorkerFiles().then(function() {
+ this.setupFakeWorker();
+ workerInitializedPromise.resolve();
+ }.bind(this));
+ }
+ }.bind(this));
+
+ var testObj = new Uint8Array([PDFJS.postMessageTransfers ? 255 : 0]);
+ // Some versions of Opera throw a DATA_CLONE_ERR on serializing the
+ // typed array. Also, checking if we can use transfers.
+ try {
+ messageHandler.send('test', testObj, null, [testObj.buffer]);
+ } catch (ex) {
+ info('Cannot use postMessage transfers');
+ testObj[0] = 0;
+ messageHandler.send('test', testObj);
+ }
+ return;
+ } catch (e) {
+ info('The worker has been disabled.');
+ }
+ }
+ // Either workers are disabled, not supported or have thrown an exception.
+ // Thus, we fallback to a faked worker.
+ globalScope.PDFJS.disableWorker = true;
+ this.loadFakeWorkerFiles().then(function() {
+ this.setupFakeWorker();
+ workerInitializedPromise.resolve();
+ }.bind(this));
+ }
+ WorkerTransport.prototype = {
+ destroy: function WorkerTransport_destroy() {
+ this.pageCache = [];
+ this.pagePromises = [];
+ var self = this;
+ this.messageHandler.send('Terminate', null, function () {
+ if (self.worker) {
+ self.worker.terminate();
+ }
+ });
+ },
+
+ loadFakeWorkerFiles: function WorkerTransport_loadFakeWorkerFiles() {
+ if (!PDFJS.fakeWorkerFilesLoadedPromise) {
+ PDFJS.fakeWorkerFilesLoadedPromise = new Promise();
+ // In the developer build load worker_loader which in turn loads all the
+ // other files and resolves the promise. In production only the
+ // pdf.worker.js file is needed.
+ Util.loadScript(PDFJS.workerSrc, function() {
+ PDFJS.fakeWorkerFilesLoadedPromise.resolve();
+ });
+ }
+ return PDFJS.fakeWorkerFilesLoadedPromise;
+ },
+
+ setupFakeWorker: function WorkerTransport_setupFakeWorker() {
+ warn('Setting up fake worker.');
+ // If we don't use a worker, just post/sendMessage to the main thread.
+ var fakeWorker = {
+ postMessage: function WorkerTransport_postMessage(obj) {
+ fakeWorker.onmessage({data: obj});
+ },
+ terminate: function WorkerTransport_terminate() {}
+ };
+
+ var messageHandler = new MessageHandler('main', fakeWorker);
+ this.setupMessageHandler(messageHandler);
+
+ // If the main thread is our worker, setup the handling for the messages
+ // the main thread sends to it self.
+ PDFJS.WorkerMessageHandler.setup(messageHandler);
+ },
+
+ setupMessageHandler:
+ function WorkerTransport_setupMessageHandler(messageHandler) {
+ this.messageHandler = messageHandler;
+
+ function updatePassword(password) {
+ messageHandler.send('UpdatePassword', password);
+ }
+
+ var pdfDataRangeTransport = this.pdfDataRangeTransport;
+ if (pdfDataRangeTransport) {
+ pdfDataRangeTransport.addRangeListener(function(begin, chunk) {
+ messageHandler.send('OnDataRange', {
+ begin: begin,
+ chunk: chunk
+ });
+ });
+
+ pdfDataRangeTransport.addProgressListener(function(loaded) {
+ messageHandler.send('OnDataProgress', {
+ loaded: loaded
+ });
+ });
+
+ messageHandler.on('RequestDataRange',
+ function transportDataRange(data) {
+ pdfDataRangeTransport.requestDataRange(data.begin, data.end);
+ }, this);
+ }
+
+ messageHandler.on('GetDoc', function transportDoc(data) {
+ var pdfInfo = data.pdfInfo;
+ var pdfDocument = new PDFDocumentProxy(pdfInfo, this);
+ this.pdfDocument = pdfDocument;
+ this.workerReadyPromise.resolve(pdfDocument);
+ }, this);
+
+ messageHandler.on('NeedPassword', function transportPassword(data) {
+ if (this.passwordCallback) {
+ return this.passwordCallback(updatePassword,
+ PasswordResponses.NEED_PASSWORD);
+ }
+ this.workerReadyPromise.reject(data.exception.message, data.exception);
+ }, this);
+
+ messageHandler.on('IncorrectPassword', function transportBadPass(data) {
+ if (this.passwordCallback) {
+ return this.passwordCallback(updatePassword,
+ PasswordResponses.INCORRECT_PASSWORD);
+ }
+ this.workerReadyPromise.reject(data.exception.message, data.exception);
+ }, this);
+
+ messageHandler.on('InvalidPDF', function transportInvalidPDF(data) {
+ this.workerReadyPromise.reject(data.exception.name, data.exception);
+ }, this);
+
+ messageHandler.on('MissingPDF', function transportMissingPDF(data) {
+ this.workerReadyPromise.reject(data.exception.message, data.exception);
+ }, this);
+
+ messageHandler.on('UnknownError', function transportUnknownError(data) {
+ this.workerReadyPromise.reject(data.exception.message, data.exception);
+ }, this);
+
+ messageHandler.on('GetPage', function transportPage(data) {
+ var pageInfo = data.pageInfo;
+ var page = new PDFPageProxy(pageInfo, this);
+ this.pageCache[pageInfo.pageIndex] = page;
+ var promise = this.pagePromises[pageInfo.pageIndex];
+ promise.resolve(page);
+ }, this);
+
+ messageHandler.on('GetAnnotations', function transportAnnotations(data) {
+ var annotations = data.annotations;
+ var promise = this.pageCache[data.pageIndex].annotationsPromise;
+ promise.resolve(annotations);
+ }, this);
+
+ messageHandler.on('StartRenderPage', function transportRender(data) {
+ var page = this.pageCache[data.pageIndex];
+
+ page.stats.timeEnd('Page Request');
+ page._startRenderPage(data.transparency);
+ }, this);
+
+ messageHandler.on('RenderPageChunk', function transportRender(data) {
+ var page = this.pageCache[data.pageIndex];
+
+ page._renderPageChunk(data.operatorList);
+ }, this);
+
+ messageHandler.on('commonobj', function transportObj(data) {
+ var id = data[0];
+ var type = data[1];
+ if (this.commonObjs.hasData(id))
+ return;
+
+ switch (type) {
+ case 'Font':
+ var exportedData = data[2];
+
+ var font;
+ if ('error' in exportedData) {
+ var error = exportedData.error;
+ warn('Error during font loading: ' + error);
+ this.commonObjs.resolve(id, error);
+ break;
+ } else {
+ font = new FontFace(exportedData);
+ }
+
+ FontLoader.bind(
+ [font],
+ function fontReady(fontObjs) {
+ this.commonObjs.resolve(id, font);
+ }.bind(this)
+ );
+ break;
+ case 'FontPath':
+ this.commonObjs.resolve(id, data[2]);
+ break;
+ default:
+ error('Got unknown common object type ' + type);
+ }
+ }, this);
+
+ messageHandler.on('obj', function transportObj(data) {
+ var id = data[0];
+ var pageIndex = data[1];
+ var type = data[2];
+ var pageProxy = this.pageCache[pageIndex];
+ if (pageProxy.objs.hasData(id))
+ return;
+
+ switch (type) {
+ case 'JpegStream':
+ var imageData = data[3];
+ loadJpegStream(id, imageData, pageProxy.objs);
+ break;
+ case 'Image':
+ var imageData = data[3];
+ pageProxy.objs.resolve(id, imageData);
+
+ // heuristics that will allow not to store large data
+ var MAX_IMAGE_SIZE_TO_STORE = 8000000;
+ if ('data' in imageData &&
+ imageData.data.length > MAX_IMAGE_SIZE_TO_STORE) {
+ pageProxy.cleanupAfterRender = true;
+ }
+ break;
+ default:
+ error('Got unknown object type ' + type);
+ }
+ }, this);
+
+ messageHandler.on('DocProgress', function transportDocProgress(data) {
+ if (this.progressCallback) {
+ this.progressCallback({
+ loaded: data.loaded,
+ total: data.total
+ });
+ }
+ }, this);
+
+ messageHandler.on('DocError', function transportDocError(data) {
+ this.workerReadyPromise.reject(data);
+ }, this);
+
+ messageHandler.on('PageError', function transportError(data) {
+ var page = this.pageCache[data.pageNum - 1];
+ if (page.displayReadyPromise)
+ page.displayReadyPromise.reject(data.error);
+ else
+ error(data.error);
+ }, this);
+
+ messageHandler.on('JpegDecode', function(data, promise) {
+ var imageUrl = data[0];
+ var components = data[1];
+ if (components != 3 && components != 1)
+ error('Only 3 component or 1 component can be returned');
+
+ var img = new Image();
+ img.onload = (function messageHandler_onloadClosure() {
+ var width = img.width;
+ var height = img.height;
+ var size = width * height;
+ var rgbaLength = size * 4;
+ var buf = new Uint8Array(size * components);
+ var tmpCanvas = createScratchCanvas(width, height);
+ var tmpCtx = tmpCanvas.getContext('2d');
+ tmpCtx.drawImage(img, 0, 0);
+ var data = tmpCtx.getImageData(0, 0, width, height).data;
+
+ if (components == 3) {
+ for (var i = 0, j = 0; i < rgbaLength; i += 4, j += 3) {
+ buf[j] = data[i];
+ buf[j + 1] = data[i + 1];
+ buf[j + 2] = data[i + 2];
+ }
+ } else if (components == 1) {
+ for (var i = 0, j = 0; i < rgbaLength; i += 4, j++) {
+ buf[j] = data[i];
+ }
+ }
+ promise.resolve({ data: buf, width: width, height: height});
+ }).bind(this);
+ img.src = imageUrl;
+ });
+ },
+
+ fetchDocument: function WorkerTransport_fetchDocument(source) {
+ source.disableAutoFetch = PDFJS.disableAutoFetch;
+ source.chunkedViewerLoading = !!this.pdfDataRangeTransport;
+ this.messageHandler.send('GetDocRequest', {
+ source: source,
+ disableRange: PDFJS.disableRange,
+ maxImageSize: PDFJS.maxImageSize,
+ disableFontFace: PDFJS.disableFontFace
+ });
+ },
+
+ getData: function WorkerTransport_getData(promise) {
+ this.messageHandler.send('GetData', null, function(data) {
+ promise.resolve(data);
+ });
+ },
+
+ dataLoaded: function WorkerTransport_dataLoaded() {
+ var promise = new PDFJS.Promise();
+ this.messageHandler.send('DataLoaded', null, function(args) {
+ promise.resolve(args);
+ });
+ return promise;
+ },
+
+ getPage: function WorkerTransport_getPage(pageNumber, promise) {
+ var pageIndex = pageNumber - 1;
+ if (pageIndex in this.pagePromises)
+ return this.pagePromises[pageIndex];
+ var promise = new PDFJS.Promise('Page ' + pageNumber);
+ this.pagePromises[pageIndex] = promise;
+ this.messageHandler.send('GetPageRequest', { pageIndex: pageIndex });
+ return promise;
+ },
+
+ getPageIndex: function WorkerTransport_getPageIndexByRef(ref) {
+ var promise = new PDFJS.Promise();
+ this.messageHandler.send('GetPageIndex', { ref: ref },
+ function (pageIndex) {
+ promise.resolve(pageIndex);
+ }
+ );
+ return promise;
+ },
+
+ getAnnotations: function WorkerTransport_getAnnotations(pageIndex) {
+ this.messageHandler.send('GetAnnotationsRequest',
+ { pageIndex: pageIndex });
+ },
+
+ getDestinations: function WorkerTransport_getDestinations() {
+ var promise = new PDFJS.Promise();
+ this.messageHandler.send('GetDestinations', null,
+ function transportDestinations(destinations) {
+ promise.resolve(destinations);
+ }
+ );
+ return promise;
+ },
+
+ startCleanup: function WorkerTransport_startCleanup() {
+ this.messageHandler.send('Cleanup', null,
+ function endCleanup() {
+ for (var i = 0, ii = this.pageCache.length; i < ii; i++) {
+ var page = this.pageCache[i];
+ if (page) {
+ page.destroy();
+ }
+ }
+ this.commonObjs.clear();
+ FontLoader.clear();
+ }.bind(this)
+ );
+ }
+ };
+ return WorkerTransport;
+
+})();
+
+/**
+ * A PDF document and page is built of many objects. E.g. there are objects
+ * for fonts, images, rendering code and such. These objects might get processed
+ * inside of a worker. The `PDFObjects` implements some basic functions to
+ * manage these objects.
+ */
+var PDFObjects = (function PDFObjectsClosure() {
+ function PDFObjects() {
+ this.objs = {};
+ }
+
+ PDFObjects.prototype = {
+ /**
+ * Internal function.
+ * Ensures there is an object defined for `objId`.
+ */
+ ensureObj: function PDFObjects_ensureObj(objId) {
+ if (this.objs[objId])
+ return this.objs[objId];
+
+ var obj = {
+ promise: new Promise(objId),
+ data: null,
+ resolved: false
+ };
+ this.objs[objId] = obj;
+
+ return obj;
+ },
+
+ /**
+ * If called *without* callback, this returns the data of `objId` but the
+ * object needs to be resolved. If it isn't, this function throws.
+ *
+ * If called *with* a callback, the callback is called with the data of the
+ * object once the object is resolved. That means, if you call this
+ * function and the object is already resolved, the callback gets called
+ * right away.
+ */
+ get: function PDFObjects_get(objId, callback) {
+ // If there is a callback, then the get can be async and the object is
+ // not required to be resolved right now
+ if (callback) {
+ this.ensureObj(objId).promise.then(callback);
+ return null;
+ }
+
+ // If there isn't a callback, the user expects to get the resolved data
+ // directly.
+ var obj = this.objs[objId];
+
+ // If there isn't an object yet or the object isn't resolved, then the
+ // data isn't ready yet!
+ if (!obj || !obj.resolved)
+ error('Requesting object that isn\'t resolved yet ' + objId);
+
+ return obj.data;
+ },
+
+ /**
+ * Resolves the object `objId` with optional `data`.
+ */
+ resolve: function PDFObjects_resolve(objId, data) {
+ var obj = this.ensureObj(objId);
+
+ obj.resolved = true;
+ obj.data = data;
+ obj.promise.resolve(data);
+ },
+
+ isResolved: function PDFObjects_isResolved(objId) {
+ var objs = this.objs;
+
+ if (!objs[objId]) {
+ return false;
+ } else {
+ return objs[objId].resolved;
+ }
+ },
+
+ hasData: function PDFObjects_hasData(objId) {
+ return this.isResolved(objId);
+ },
+
+ /**
+ * Returns the data of `objId` if object exists, null otherwise.
+ */
+ getData: function PDFObjects_getData(objId) {
+ var objs = this.objs;
+ if (!objs[objId] || !objs[objId].resolved) {
+ return null;
+ } else {
+ return objs[objId].data;
+ }
+ },
+
+ clear: function PDFObjects_clear() {
+ this.objs = {};
+ }
+ };
+ return PDFObjects;
+})();
+/*
+ * RenderTask is basically a promise but adds a cancel function to terminate it.
+ */
+var RenderTask = (function RenderTaskClosure() {
+ function RenderTask(internalRenderTask) {
+ this.internalRenderTask = internalRenderTask;
+ Promise.call(this);
+ }
+
+ RenderTask.prototype = Object.create(Promise.prototype);
+
+ /**
+ * Cancel the rendering task. If the task is curently rendering it will not be
+ * cancelled until graphics pauses with a timeout. The promise that this
+ * object extends will resolved when cancelled.
+ */
+ RenderTask.prototype.cancel = function RenderTask_cancel() {
+ this.internalRenderTask.cancel();
+ };
+
+ return RenderTask;
+})();
+
+var InternalRenderTask = (function InternalRenderTaskClosure() {
+
+ function InternalRenderTask(callback, params, objs, commonObjs, operatorList,
+ pageNumber) {
+ this.callback = callback;
+ this.params = params;
+ this.objs = objs;
+ this.commonObjs = commonObjs;
+ this.operatorListIdx = null;
+ this.operatorList = operatorList;
+ this.pageNumber = pageNumber;
+ this.running = false;
+ this.graphicsReadyCallback = null;
+ this.graphicsReady = false;
+ this.cancelled = false;
+ }
+
+ InternalRenderTask.prototype = {
+
+ initalizeGraphics:
+ function InternalRenderTask_initalizeGraphics(transparency) {
+
+ if (this.cancelled) {
+ return;
+ }
+ if (PDFJS.pdfBug && 'StepperManager' in globalScope &&
+ globalScope.StepperManager.enabled) {
+ this.stepper = globalScope.StepperManager.create(this.pageNumber - 1);
+ this.stepper.init(this.operatorList);
+ this.stepper.nextBreakPoint = this.stepper.getNextBreakPoint();
+ }
+
+ var params = this.params;
+ this.gfx = new CanvasGraphics(params.canvasContext, this.commonObjs,
+ this.objs, params.textLayer,
+ params.imageLayer);
+
+ this.gfx.beginDrawing(params.viewport, transparency);
+ this.operatorListIdx = 0;
+ this.graphicsReady = true;
+ if (this.graphicsReadyCallback) {
+ this.graphicsReadyCallback();
+ }
+ },
+
+ cancel: function InternalRenderTask_cancel() {
+ this.running = false;
+ this.cancelled = true;
+ this.callback('cancelled');
+ },
+
+ operatorListChanged: function InternalRenderTask_operatorListChanged() {
+ if (!this.graphicsReady) {
+ if (!this.graphicsReadyCallback) {
+ this.graphicsReadyCallback = this._continue.bind(this);
+ }
+ return;
+ }
+
+ if (this.stepper) {
+ this.stepper.updateOperatorList(this.operatorList);
+ }
+
+ if (this.running) {
+ return;
+ }
+ this._continue();
+ },
+
+ _continue: function InternalRenderTask__continue() {
+ this.running = true;
+ if (this.cancelled) {
+ return;
+ }
+ if (this.params.continueCallback) {
+ this.params.continueCallback(this._next.bind(this));
+ } else {
+ this._next();
+ }
+ },
+
+ _next: function InternalRenderTask__next() {
+ if (this.cancelled) {
+ return;
+ }
+ this.operatorListIdx = this.gfx.executeOperatorList(this.operatorList,
+ this.operatorListIdx,
+ this._continue.bind(this),
+ this.stepper);
+ if (this.operatorListIdx === this.operatorList.argsArray.length) {
+ this.running = false;
+ if (this.operatorList.lastChunk) {
+ this.gfx.endDrawing();
+ this.callback();
+ }
+ }
+ }
+
+ };
+
+ return InternalRenderTask;
+})();
+
+
+var Metadata = PDFJS.Metadata = (function MetadataClosure() {
+ function fixMetadata(meta) {
+ return meta.replace(/>\\376\\377([^<]+)/g, function(all, codes) {
+ var bytes = codes.replace(/\\([0-3])([0-7])([0-7])/g,
+ function(code, d1, d2, d3) {
+ return String.fromCharCode(d1 * 64 + d2 * 8 + d3 * 1);
+ });
+ var chars = '';
+ for (var i = 0; i < bytes.length; i += 2) {
+ var code = bytes.charCodeAt(i) * 256 + bytes.charCodeAt(i + 1);
+ chars += code >= 32 && code < 127 && code != 60 && code != 62 &&
+ code != 38 && false ? String.fromCharCode(code) :
+ '&#x' + (0x10000 + code).toString(16).substring(1) + ';';
+ }
+ return '>' + chars;
+ });
+ }
+
+ function Metadata(meta) {
+ if (typeof meta === 'string') {
+ // Ghostscript produces invalid metadata
+ meta = fixMetadata(meta);
+
+ var parser = new DOMParser();
+ meta = parser.parseFromString(meta, 'application/xml');
+ } else if (!(meta instanceof Document)) {
+ error('Metadata: Invalid metadata object');
+ }
+
+ this.metaDocument = meta;
+ this.metadata = {};
+ this.parse();
+ }
+
+ Metadata.prototype = {
+ parse: function Metadata_parse() {
+ var doc = this.metaDocument;
+ var rdf = doc.documentElement;
+
+ if (rdf.nodeName.toLowerCase() !== 'rdf:rdf') { // Wrapped in
+ rdf = rdf.firstChild;
+ while (rdf && rdf.nodeName.toLowerCase() !== 'rdf:rdf')
+ rdf = rdf.nextSibling;
+ }
+
+ var nodeName = (rdf) ? rdf.nodeName.toLowerCase() : null;
+ if (!rdf || nodeName !== 'rdf:rdf' || !rdf.hasChildNodes())
+ return;
+
+ var children = rdf.childNodes, desc, entry, name, i, ii, length, iLength;
+
+ for (i = 0, length = children.length; i < length; i++) {
+ desc = children[i];
+ if (desc.nodeName.toLowerCase() !== 'rdf:description')
+ continue;
+
+ for (ii = 0, iLength = desc.childNodes.length; ii < iLength; ii++) {
+ if (desc.childNodes[ii].nodeName.toLowerCase() !== '#text') {
+ entry = desc.childNodes[ii];
+ name = entry.nodeName.toLowerCase();
+ this.metadata[name] = entry.textContent.trim();
+ }
+ }
+ }
+ },
+
+ get: function Metadata_get(name) {
+ return this.metadata[name] || null;
+ },
+
+ has: function Metadata_has(name) {
+ return typeof this.metadata[name] !== 'undefined';
+ }
+ };
+
+ return Metadata;
+})();
+
+
+//