Index: static/js/pdf.js
===================================================================
--- static/js/pdf.js	(revision 6312fcea8e97d5783958e375469b068fe837bb97)
+++ static/js/pdf.js	(revision 6312fcea8e97d5783958e375469b068fe837bb97)
@@ -0,0 +1,10902 @@
+/* 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.
+ */
+/* jshint globalstrict: false */
+/* umdutils ignore */
+
+(function (root, factory) {
+  'use strict';
+  if (typeof define === 'function' && define.amd) {
+define('pdfjs-dist/build/pdf', ['exports'], factory);
+  } else if (typeof exports !== 'undefined') {
+    factory(exports);
+  } else {
+factory((root.pdfjsDistBuildPdf = {}));
+  }
+}(this, function (exports) {
+  // Use strict in our context only - users might not want it
+  'use strict';
+
+var pdfjsVersion = '1.5.188';
+var pdfjsBuild = '0e2d50f';
+
+  var pdfjsFilePath =
+    typeof document !== 'undefined' && document.currentScript ?
+      document.currentScript.src : null;
+
+  var pdfjsLibs = {};
+
+  (function pdfjsWrapper() {
+
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsSharedUtil = {}));
+  }
+}(this, function (exports) {
+
+var globalScope = (typeof window !== 'undefined') ? window :
+                  (typeof global !== 'undefined') ? global :
+                  (typeof self !== 'undefined') ? self : this;
+
+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
+};
+
+var ImageKind = {
+  GRAYSCALE_1BPP: 1,
+  RGB_24BPP: 2,
+  RGBA_32BPP: 3
+};
+
+var AnnotationType = {
+  TEXT: 1,
+  LINK: 2,
+  FREETEXT: 3,
+  LINE: 4,
+  SQUARE: 5,
+  CIRCLE: 6,
+  POLYGON: 7,
+  POLYLINE: 8,
+  HIGHLIGHT: 9,
+  UNDERLINE: 10,
+  SQUIGGLY: 11,
+  STRIKEOUT: 12,
+  STAMP: 13,
+  CARET: 14,
+  INK: 15,
+  POPUP: 16,
+  FILEATTACHMENT: 17,
+  SOUND: 18,
+  MOVIE: 19,
+  WIDGET: 20,
+  SCREEN: 21,
+  PRINTERMARK: 22,
+  TRAPNET: 23,
+  WATERMARK: 24,
+  THREED: 25,
+  REDACT: 26
+};
+
+var AnnotationFlag = {
+  INVISIBLE: 0x01,
+  HIDDEN: 0x02,
+  PRINT: 0x04,
+  NOZOOM: 0x08,
+  NOROTATE: 0x10,
+  NOVIEW: 0x20,
+  READONLY: 0x40,
+  LOCKED: 0x80,
+  TOGGLENOVIEW: 0x100,
+  LOCKEDCONTENTS: 0x200
+};
+
+var AnnotationBorderStyleType = {
+  SOLID: 1,
+  DASHED: 2,
+  BEVELED: 3,
+  INSET: 4,
+  UNDERLINE: 5
+};
+
+var StreamType = {
+  UNKNOWN: 0,
+  FLATE: 1,
+  LZW: 2,
+  DCT: 3,
+  JPX: 4,
+  JBIG: 5,
+  A85: 6,
+  AHX: 7,
+  CCF: 8,
+  RL: 9
+};
+
+var FontType = {
+  UNKNOWN: 0,
+  TYPE1: 1,
+  TYPE1C: 2,
+  CIDFONTTYPE0: 3,
+  CIDFONTTYPE0C: 4,
+  TRUETYPE: 5,
+  CIDFONTTYPE2: 6,
+  TYPE3: 7,
+  OPENTYPE: 8,
+  TYPE0: 9,
+  MMTYPE1: 10
+};
+
+var VERBOSITY_LEVELS = {
+  errors: 0,
+  warnings: 1,
+  infos: 5
+};
+
+// All the possible operations for an operator list.
+var 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,
+  paintImageXObjectRepeat: 88,
+  paintImageMaskXObjectRepeat: 89,
+  paintSolidColorImageMask: 90,
+  constructPath: 91
+};
+
+var verbosity = VERBOSITY_LEVELS.warnings;
+
+function setVerbosityLevel(level) {
+  verbosity = level;
+}
+
+function getVerbosityLevel() {
+  return verbosity;
+}
+
+// A notice for devs. 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 >= VERBOSITY_LEVELS.infos) {
+    console.log('Info: ' + msg);
+  }
+}
+
+// Non-fatal warnings.
+function warn(msg) {
+  if (verbosity >= VERBOSITY_LEVELS.warnings) {
+    console.log('Warning: ' + msg);
+  }
+}
+
+// Deprecated API function -- display regardless of the PDFJS.verbosity setting.
+function deprecated(details) {
+  console.log('Deprecated API usage: ' + details);
+}
+
+// Fatal errors that should trigger the fallback UI and halt execution by
+// throwing an exception.
+function error(msg) {
+  if (verbosity >= VERBOSITY_LEVELS.errors) {
+    console.log('Error: ' + msg);
+    console.log(backtrace());
+  }
+  throw new Error(msg);
+}
+
+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);
+  }
+}
+
+var UNSUPPORTED_FEATURES = {
+  unknown: 'unknown',
+  forms: 'forms',
+  javaScript: 'javaScript',
+  smask: 'smask',
+  shadingPattern: 'shadingPattern',
+  font: 'font'
+};
+
+// Checks if URLs have the same origin. For non-HTTP based URLs, returns false.
+function isSameOrigin(baseUrl, otherUrl) {
+  try {
+    var base = new URL(baseUrl);
+    if (!base.origin || base.origin === 'null') {
+      return false; // non-HTTP url
+    }
+  } catch (e) {
+    return false;
+  }
+
+  var other = new URL(otherUrl, base);
+  return base.origin === other.origin;
+}
+
+// Validates if URL is safe and allowed, e.g. to avoid XSS.
+function isValidUrl(url, allowRelative) {
+  if (!url || typeof url !== 'string') {
+    return false;
+  }
+  // RFC 3986 (http://tools.ietf.org/html/rfc3986#section-3.1)
+  // scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
+  var protocol = /^[a-z][a-z0-9+\-.]*(?=:)/i.exec(url);
+  if (!protocol) {
+    return allowRelative;
+  }
+  protocol = protocol[0].toLowerCase();
+  switch (protocol) {
+    case 'http':
+    case 'https':
+    case 'ftp':
+    case 'mailto':
+    case 'tel':
+      return true;
+    default:
+      return false;
+  }
+}
+
+function shadow(obj, prop, value) {
+  Object.defineProperty(obj, prop, { value: value,
+                                     enumerable: true,
+                                     configurable: true,
+                                     writable: false });
+  return value;
+}
+
+function getLookupTableFactory(initializer) {
+  var lookup;
+  return function () {
+    if (initializer) {
+      lookup = Object.create(null);
+      initializer(lookup);
+      initializer = null;
+    }
+    return lookup;
+  };
+}
+
+var 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 UnexpectedResponseException =
+    (function UnexpectedResponseExceptionClosure() {
+  function UnexpectedResponseException(msg, status) {
+    this.name = 'UnexpectedResponseException';
+    this.message = msg;
+    this.status = status;
+  }
+
+  UnexpectedResponseException.prototype = new Error();
+  UnexpectedResponseException.constructor = UnexpectedResponseException;
+
+  return UnexpectedResponseException;
+})();
+
+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;
+})();
+
+var NullCharactersRegExp = /\x00/g;
+
+function removeNullCharacters(str) {
+  if (typeof str !== 'string') {
+    warn('The argument for removeNullCharacters must be a string.');
+    return str;
+  }
+  return str.replace(NullCharactersRegExp, '');
+}
+
+function bytesToString(bytes) {
+  assert(bytes !== null && typeof bytes === 'object' &&
+         bytes.length !== undefined, 'Invalid argument for bytesToString');
+  var length = bytes.length;
+  var MAX_ARGUMENT_COUNT = 8192;
+  if (length < MAX_ARGUMENT_COUNT) {
+    return String.fromCharCode.apply(null, bytes);
+  }
+  var strBuf = [];
+  for (var i = 0; i < length; i += MAX_ARGUMENT_COUNT) {
+    var chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length);
+    var chunk = bytes.subarray(i, chunkEnd);
+    strBuf.push(String.fromCharCode.apply(null, chunk));
+  }
+  return strBuf.join('');
+}
+
+function stringToBytes(str) {
+  assert(typeof str === 'string', 'Invalid argument for stringToBytes');
+  var length = str.length;
+  var bytes = new Uint8Array(length);
+  for (var i = 0; i < length; ++i) {
+    bytes[i] = str.charCodeAt(i) & 0xFF;
+  }
+  return bytes;
+}
+
+/**
+ * Gets length of the array (Array, Uint8Array, or string) in bytes.
+ * @param {Array|Uint8Array|string} arr
+ * @returns {number}
+ */
+function arrayByteLength(arr) {
+  if (arr.length !== undefined) {
+    return arr.length;
+  }
+  assert(arr.byteLength !== undefined);
+  return arr.byteLength;
+}
+
+/**
+ * Combines array items (arrays) into single Uint8Array object.
+ * @param {Array} arr - the array of the arrays (Array, Uint8Array, or string).
+ * @returns {Uint8Array}
+ */
+function arraysToBytes(arr) {
+  // Shortcut: if first and only item is Uint8Array, return it.
+  if (arr.length === 1 && (arr[0] instanceof Uint8Array)) {
+    return arr[0];
+  }
+  var resultLength = 0;
+  var i, ii = arr.length;
+  var item, itemLength ;
+  for (i = 0; i < ii; i++) {
+    item = arr[i];
+    itemLength = arrayByteLength(item);
+    resultLength += itemLength;
+  }
+  var pos = 0;
+  var data = new Uint8Array(resultLength);
+  for (i = 0; i < ii; i++) {
+    item = arr[i];
+    if (!(item instanceof Uint8Array)) {
+      if (typeof item === 'string') {
+        item = stringToBytes(item);
+      } else {
+        item = new Uint8Array(item);
+      }
+    }
+    itemLength = item.byteLength;
+    data.set(item, pos);
+    pos += itemLength;
+  }
+  return data;
+}
+
+function string32(value) {
+  return String.fromCharCode((value >> 24) & 0xff, (value >> 16) & 0xff,
+                             (value >> 8) & 0xff, value & 0xff);
+}
+
+function log2(x) {
+  var n = 1, i = 0;
+  while (x > n) {
+    n <<= 1;
+    i++;
+  }
+  return i;
+}
+
+function readInt8(data, start) {
+  return (data[start] << 24) >> 24;
+}
+
+function readUint16(data, offset) {
+  return (data[offset] << 8) | data[offset + 1];
+}
+
+function readUint32(data, offset) {
+  return ((data[offset] << 24) | (data[offset + 1] << 16) |
+         (data[offset + 2] << 8) | data[offset + 3]) >>> 0;
+}
+
+// Lazy test the endianness of the platform
+// NOTE: This will be 'true' for simulated TypedArrays
+function isLittleEndian() {
+  var buffer8 = new Uint8Array(2);
+  buffer8[0] = 1;
+  var buffer16 = new Uint16Array(buffer8.buffer);
+  return (buffer16[0] === 1);
+}
+
+// Checks if it's possible to eval JS expressions.
+function isEvalSupported() {
+  try {
+    /* jshint evil: true */
+    new Function('');
+    return true;
+  } catch (e) {
+    return false;
+  }
+}
+
+var Uint32ArrayView = (function Uint32ArrayViewClosure() {
+
+  function Uint32ArrayView(buffer, length) {
+    this.buffer = buffer;
+    this.byteLength = buffer.length;
+    this.length = length === undefined ? (this.byteLength >> 2) : length;
+    ensureUint32ArrayViewProps(this.length);
+  }
+  Uint32ArrayView.prototype = Object.create(null);
+
+  var uint32ArrayViewSetters = 0;
+  function createUint32ArrayProp(index) {
+    return {
+      get: function () {
+        var buffer = this.buffer, offset = index << 2;
+        return (buffer[offset] | (buffer[offset + 1] << 8) |
+          (buffer[offset + 2] << 16) | (buffer[offset + 3] << 24)) >>> 0;
+      },
+      set: function (value) {
+        var buffer = this.buffer, offset = index << 2;
+        buffer[offset] = value & 255;
+        buffer[offset + 1] = (value >> 8) & 255;
+        buffer[offset + 2] = (value >> 16) & 255;
+        buffer[offset + 3] = (value >>> 24) & 255;
+      }
+    };
+  }
+
+  function ensureUint32ArrayViewProps(length) {
+    while (uint32ArrayViewSetters < length) {
+      Object.defineProperty(Uint32ArrayView.prototype,
+        uint32ArrayViewSetters,
+        createUint32ArrayProp(uint32ArrayViewSetters));
+      uint32ArrayViewSetters++;
+    }
+  }
+
+  return Uint32ArrayView;
+})();
+
+exports.Uint32ArrayView = Uint32ArrayView;
+
+var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
+
+var Util = (function UtilClosure() {
+  function Util() {}
+
+  var rgbBuf = ['rgb(', 0, ',', 0, ',', 0, ')'];
+
+  // makeCssRgb() can be called thousands of times. Using |rgbBuf| avoids
+  // creating many intermediate strings.
+  Util.makeCssRgb = function Util_makeCssRgb(r, g, b) {
+    rgbBuf[1] = r;
+    rgbBuf[3] = g;
+    rgbBuf[5] = b;
+    return rgbBuf.join('');
+  };
+
+  // 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;
+  };
+
+  var ROMAN_NUMBER_MAP = [
+    '', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM',
+    '', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC',
+    '', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX'
+  ];
+  /**
+   * Converts positive integers to (upper case) Roman numerals.
+   * @param {integer} number - The number that should be converted.
+   * @param {boolean} lowerCase - Indicates if the result should be converted
+   *   to lower case letters. The default is false.
+   * @return {string} The resulting Roman number.
+   */
+  Util.toRoman = function Util_toRoman(number, lowerCase) {
+    assert(isInt(number) && number > 0,
+           'The number should be a positive integer.');
+    var pos, romanBuf = [];
+    // Thousands
+    while (number >= 1000) {
+      number -= 1000;
+      romanBuf.push('M');
+    }
+    // Hundreds
+    pos = (number / 100) | 0;
+    number %= 100;
+    romanBuf.push(ROMAN_NUMBER_MAP[pos]);
+    // Tens
+    pos = (number / 10) | 0;
+    number %= 10;
+    romanBuf.push(ROMAN_NUMBER_MAP[10 + pos]);
+    // Ones
+    romanBuf.push(ROMAN_NUMBER_MAP[20 + number]);
+
+    var romanStr = romanBuf.join('');
+    return (lowerCase ? romanStr.toLowerCase() : romanStr);
+  };
+
+  Util.appendToArray = function Util_appendToArray(arr1, arr2) {
+    Array.prototype.push.apply(arr1, arr2);
+  };
+
+  Util.prependToArray = function Util_prependToArray(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;
+})();
+
+/**
+ * PDF page viewport created based on scale, rotation and offset.
+ * @class
+ * @alias PageViewport
+ */
+var PageViewport = (function PageViewportClosure() {
+  /**
+   * @constructor
+   * @private
+   * @param viewBox {Array} xMin, yMin, xMax and yMax coordinates.
+   * @param scale {number} scale of the viewport.
+   * @param rotation {number} rotations of the viewport in degrees.
+   * @param offsetX {number} offset X
+   * @param offsetY {number} offset Y
+   * @param dontFlip {boolean} if true, axis Y will not be flipped.
+   */
+  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 = /** @lends PageViewport.prototype */ {
+    /**
+     * Clones viewport with additional properties.
+     * @param args {Object} (optional) If specified, may contain the 'scale' or
+     * 'rotation' properties to override the corresponding properties in
+     * the cloned viewport.
+     * @returns {PageViewport} Cloned viewport.
+     */
+    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);
+    },
+    /**
+     * Converts PDF point to the viewport coordinates. For examples, useful for
+     * converting PDF location into canvas pixel coordinates.
+     * @param x {number} X coordinate.
+     * @param y {number} Y coordinate.
+     * @returns {Object} Object that contains 'x' and 'y' properties of the
+     * point in the viewport coordinate space.
+     * @see {@link convertToPdfPoint}
+     * @see {@link convertToViewportRectangle}
+     */
+    convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) {
+      return Util.applyTransform([x, y], this.transform);
+    },
+    /**
+     * Converts PDF rectangle to the viewport coordinates.
+     * @param rect {Array} xMin, yMin, xMax and yMax coordinates.
+     * @returns {Array} Contains corresponding coordinates of the rectangle
+     * in the viewport coordinate space.
+     * @see {@link convertToViewportPoint}
+     */
+    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]];
+    },
+    /**
+     * Converts viewport coordinates to the PDF location. For examples, useful
+     * for converting canvas pixel location into PDF one.
+     * @param x {number} X coordinate.
+     * @param y {number} Y coordinate.
+     * @returns {Object} Object that contains 'x' and 'y' properties of the
+     * point in the PDF coordinate space.
+     * @see {@link convertToViewportPoint}
+     */
+    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, strBuf = [];
+  if (str[0] === '\xFE' && str[1] === '\xFF') {
+    // UTF16BE BOM
+    for (i = 2; i < n; i += 2) {
+      strBuf.push(String.fromCharCode(
+        (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1)));
+    }
+  } else {
+    for (i = 0; i < n; ++i) {
+      var code = PDFStringTranslateTable[str.charCodeAt(i)];
+      strBuf.push(code ? String.fromCharCode(code) : str.charAt(i));
+    }
+  }
+  return strBuf.join('');
+}
+
+function stringToUTF8String(str) {
+  return decodeURIComponent(escape(str));
+}
+
+function utf8StringToString(str) {
+  return unescape(encodeURIComponent(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 isArray(v) {
+  return v instanceof Array;
+}
+
+function isArrayBuffer(v) {
+  return typeof v === 'object' && v !== null && v.byteLength !== undefined;
+}
+
+/**
+ * Promise Capability object.
+ *
+ * @typedef {Object} PromiseCapability
+ * @property {Promise} promise - A promise object.
+ * @property {function} resolve - Fullfills the promise.
+ * @property {function} reject - Rejects the promise.
+ */
+
+/**
+ * Creates a promise capability object.
+ * @alias createPromiseCapability
+ *
+ * @return {PromiseCapability} A capability object contains:
+ * - a Promise, resolve and reject methods.
+ */
+function createPromiseCapability() {
+  var capability = {};
+  capability.promise = new Promise(function (resolve, reject) {
+    capability.resolve = resolve;
+    capability.reject = reject;
+  });
+  return capability;
+}
+
+/**
+ * Polyfill for Promises:
+ * The following promise implementation tries to generally implement 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
+ */
+(function PromiseClosure() {
+  if (globalScope.Promise) {
+    // Promises existing in the DOM/Worker, checking presence of all/resolve
+    if (typeof globalScope.Promise.all !== 'function') {
+      globalScope.Promise.all = function (iterable) {
+        var count = 0, results = [], resolve, reject;
+        var promise = new globalScope.Promise(function (resolve_, reject_) {
+          resolve = resolve_;
+          reject = reject_;
+        });
+        iterable.forEach(function (p, i) {
+          count++;
+          p.then(function (result) {
+            results[i] = result;
+            count--;
+            if (count === 0) {
+              resolve(results);
+            }
+          }, reject);
+        });
+        if (count === 0) {
+          resolve(results);
+        }
+        return promise;
+      };
+    }
+    if (typeof globalScope.Promise.resolve !== 'function') {
+      globalScope.Promise.resolve = function (value) {
+        return new globalScope.Promise(function (resolve) { resolve(value); });
+      };
+    }
+    if (typeof globalScope.Promise.reject !== 'function') {
+      globalScope.Promise.reject = function (reason) {
+        return new globalScope.Promise(function (resolve, reject) {
+          reject(reason);
+        });
+      };
+    }
+    if (typeof globalScope.Promise.prototype.catch !== 'function') {
+      globalScope.Promise.prototype.catch = function (onReject) {
+        return globalScope.Promise.prototype.then(undefined, onReject);
+      };
+    }
+    return;
+  }
+  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() {
+      var RUN_TIMEOUT = 1; // ms
+      var timeoutAt = Date.now() + RUN_TIMEOUT;
+      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);
+        if (Date.now() >= timeoutAt) {
+          break;
+        }
+      }
+
+      if (this.handlers.length > 0) {
+        setTimeout(this.runHandlers.bind(this), 0);
+        return;
+      }
+
+      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(resolver) {
+    this._status = STATUS_PENDING;
+    this._handlers = [];
+    try {
+      resolver.call(this, this._resolve.bind(this), this._reject.bind(this));
+    } catch (e) {
+      this._reject(e);
+    }
+  }
+  /**
+   * 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 resolveAll, rejectAll;
+    var deferred = new Promise(function (resolve, reject) {
+      resolveAll = resolve;
+      rejectAll = reject;
+    });
+    var unresolved = promises.length;
+    var results = [];
+    if (unresolved === 0) {
+      resolveAll(results);
+      return deferred;
+    }
+    function reject(reason) {
+      if (deferred._status === STATUS_REJECTED) {
+        return;
+      }
+      results = [];
+      rejectAll(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) {
+            resolveAll(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 value is thenable
+   */
+  Promise.isPromise = function Promise_isPromise(value) {
+    return value && typeof value.then === 'function';
+  };
+
+  /**
+   * Creates resolved promise
+   * @param value resolve value
+   * @returns {Promise}
+   */
+  Promise.resolve = function Promise_resolve(value) {
+    return new Promise(function (resolve) { resolve(value); });
+  };
+
+  /**
+   * Creates rejected promise
+   * @param reason rejection value
+   * @returns {Promise}
+   */
+  Promise.reject = function Promise_reject(reason) {
+    return new Promise(function (resolve, reject) { reject(reason); });
+  };
+
+  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);
+    },
+
+    _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(function (resolve, reject) {
+        this.resolve = resolve;
+        this.reject = reject;
+      });
+      this._handlers.push({
+        thisPromise: this,
+        onResolve: onResolve,
+        onReject: onReject,
+        nextPromise: nextPromise
+      });
+      HandlerManager.scheduleHandlers(this);
+      return nextPromise;
+    },
+
+    catch: function Promise_catch(onReject) {
+      return this.then(undefined, onReject);
+    }
+  };
+
+  globalScope.Promise = Promise;
+})();
+
+var StatTimer = (function StatTimerClosure() {
+  function rpad(str, pad, length) {
+    while (str.length < length) {
+      str += pad;
+    }
+    return str;
+  }
+  function StatTimer() {
+    this.started = Object.create(null);
+    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 i, ii;
+      var times = this.times;
+      var out = '';
+      // Find the longest name for padding purposes.
+      var longest = 0;
+      for (i = 0, ii = times.length; i < ii; ++i) {
+        var name = times[i]['name'];
+        if (name.length > longest) {
+          longest = name.length;
+        }
+      }
+      for (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;
+})();
+
+var 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);
+};
+
+var createObjectURL = (function createObjectURLClosure() {
+  // Blob/createObjectURL is not available, falling back to data schema.
+  var digits =
+    'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+
+  return function createObjectURL(data, contentType, forceDataSchema) {
+    if (!forceDataSchema &&
+        typeof URL !== 'undefined' && URL.createObjectURL) {
+      var blob = createBlob(data, contentType);
+      return URL.createObjectURL(blob);
+    }
+
+    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(sourceName, targetName, comObj) {
+  this.sourceName = sourceName;
+  this.targetName = targetName;
+  this.comObj = comObj;
+  this.callbackIndex = 1;
+  this.postMessageTransfers = true;
+  var callbacksCapabilities = this.callbacksCapabilities = Object.create(null);
+  var ah = this.actionHandler = Object.create(null);
+
+  this._onComObjOnMessage = function messageHandlerComObjOnMessage(event) {
+    var data = event.data;
+    if (data.targetName !== this.sourceName) {
+      return;
+    }
+    if (data.isReply) {
+      var callbackId = data.callbackId;
+      if (data.callbackId in callbacksCapabilities) {
+        var callback = callbacksCapabilities[callbackId];
+        delete callbacksCapabilities[callbackId];
+        if ('error' in data) {
+          callback.reject(data.error);
+        } else {
+          callback.resolve(data.data);
+        }
+      } else {
+        error('Cannot resolve callback ' + callbackId);
+      }
+    } else if (data.action in ah) {
+      var action = ah[data.action];
+      if (data.callbackId) {
+        var sourceName = this.sourceName;
+        var targetName = data.sourceName;
+        Promise.resolve().then(function () {
+          return action[0].call(action[1], data.data);
+        }).then(function (result) {
+          comObj.postMessage({
+            sourceName: sourceName,
+            targetName: targetName,
+            isReply: true,
+            callbackId: data.callbackId,
+            data: result
+          });
+        }, function (reason) {
+          if (reason instanceof Error) {
+            // Serialize error to avoid "DataCloneError"
+            reason = reason + '';
+          }
+          comObj.postMessage({
+            sourceName: sourceName,
+            targetName: targetName,
+            isReply: true,
+            callbackId: data.callbackId,
+            error: reason
+          });
+        });
+      } else {
+        action[0].call(action[1], data.data);
+      }
+    } else {
+      error('Unknown action from worker: ' + data.action);
+    }
+  }.bind(this);
+  comObj.addEventListener('message', this._onComObjOnMessage);
+}
+
+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 {Array} [transfers] Optional list of transfers/ArrayBuffers
+   */
+  send: function messageHandlerSend(actionName, data, transfers) {
+    var message = {
+      sourceName: this.sourceName,
+      targetName: this.targetName,
+      action: actionName,
+      data: data
+    };
+    this.postMessage(message, transfers);
+  },
+  /**
+   * Sends a message to the comObj to invoke the action with the supplied data.
+   * Expects that other side will callback with the response.
+   * @param {String} actionName Action to call.
+   * @param {JSON} data JSON data to send.
+   * @param {Array} [transfers] Optional list of transfers/ArrayBuffers.
+   * @returns {Promise} Promise to be resolved with response data.
+   */
+  sendWithPromise:
+    function messageHandlerSendWithPromise(actionName, data, transfers) {
+    var callbackId = this.callbackIndex++;
+    var message = {
+      sourceName: this.sourceName,
+      targetName: this.targetName,
+      action: actionName,
+      data: data,
+      callbackId: callbackId
+    };
+    var capability = createPromiseCapability();
+    this.callbacksCapabilities[callbackId] = capability;
+    try {
+      this.postMessage(message, transfers);
+    } catch (e) {
+      capability.reject(e);
+    }
+    return capability.promise;
+  },
+  /**
+   * Sends raw message to the comObj.
+   * @private
+   * @param message {Object} Raw message.
+   * @param transfers List of transfers/ArrayBuffers, or undefined.
+   */
+  postMessage: function (message, transfers) {
+    if (transfers && this.postMessageTransfers) {
+      this.comObj.postMessage(message, transfers);
+    } else {
+      this.comObj.postMessage(message);
+    }
+  },
+
+  destroy: function () {
+    this.comObj.removeEventListener('message', this._onComObjOnMessage);
+  }
+};
+
+function loadJpegStream(id, imageUrl, objs) {
+  var img = new Image();
+  img.onload = (function loadJpegStream_onloadClosure() {
+    objs.resolve(id, img);
+  });
+  img.onerror = (function loadJpegStream_onerrorClosure() {
+    objs.resolve(id, null);
+    warn('Error during JPEG image loading');
+  });
+  img.src = imageUrl;
+}
+
+  // Polyfill from https://github.com/Polymer/URL
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+(function checkURLConstructor(scope) {
+  /* jshint ignore:start */
+
+  // feature detect for URL constructor
+  var hasWorkingUrl = false;
+  try {
+    if (typeof URL === 'function' &&
+        typeof URL.prototype === 'object' &&
+        ('origin' in URL.prototype)) {
+      var u = new URL('b', 'http://a');
+      u.pathname = 'c%20d';
+      hasWorkingUrl = u.href === 'http://a/c%20d';
+    }
+  } catch(e) { }
+
+  if (hasWorkingUrl)
+    return;
+
+  var relative = Object.create(null);
+  relative['ftp'] = 21;
+  relative['file'] = 0;
+  relative['gopher'] = 70;
+  relative['http'] = 80;
+  relative['https'] = 443;
+  relative['ws'] = 80;
+  relative['wss'] = 443;
+
+  var relativePathDotMapping = Object.create(null);
+  relativePathDotMapping['%2e'] = '.';
+  relativePathDotMapping['.%2e'] = '..';
+  relativePathDotMapping['%2e.'] = '..';
+  relativePathDotMapping['%2e%2e'] = '..';
+
+  function isRelativeScheme(scheme) {
+    return relative[scheme] !== undefined;
+  }
+
+  function invalid() {
+    clear.call(this);
+    this._isInvalid = true;
+  }
+
+  function IDNAToASCII(h) {
+    if ('' == h) {
+      invalid.call(this)
+    }
+    // XXX
+    return h.toLowerCase()
+  }
+
+  function percentEscape(c) {
+    var unicode = c.charCodeAt(0);
+    if (unicode > 0x20 &&
+       unicode < 0x7F &&
+       // " # < > ? `
+       [0x22, 0x23, 0x3C, 0x3E, 0x3F, 0x60].indexOf(unicode) == -1
+      ) {
+      return c;
+    }
+    return encodeURIComponent(c);
+  }
+
+  function percentEscapeQuery(c) {
+    // XXX This actually needs to encode c using encoding and then
+    // convert the bytes one-by-one.
+
+    var unicode = c.charCodeAt(0);
+    if (unicode > 0x20 &&
+       unicode < 0x7F &&
+       // " # < > ` (do not escape '?')
+       [0x22, 0x23, 0x3C, 0x3E, 0x60].indexOf(unicode) == -1
+      ) {
+      return c;
+    }
+    return encodeURIComponent(c);
+  }
+
+  var EOF = undefined,
+      ALPHA = /[a-zA-Z]/,
+      ALPHANUMERIC = /[a-zA-Z0-9\+\-\.]/;
+
+  function parse(input, stateOverride, base) {
+    function err(message) {
+      errors.push(message)
+    }
+
+    var state = stateOverride || 'scheme start',
+        cursor = 0,
+        buffer = '',
+        seenAt = false,
+        seenBracket = false,
+        errors = [];
+
+    loop: while ((input[cursor - 1] != EOF || cursor == 0) && !this._isInvalid) {
+      var c = input[cursor];
+      switch (state) {
+        case 'scheme start':
+          if (c && ALPHA.test(c)) {
+            buffer += c.toLowerCase(); // ASCII-safe
+            state = 'scheme';
+          } else if (!stateOverride) {
+            buffer = '';
+            state = 'no scheme';
+            continue;
+          } else {
+            err('Invalid scheme.');
+            break loop;
+          }
+          break;
+
+        case 'scheme':
+          if (c && ALPHANUMERIC.test(c)) {
+            buffer += c.toLowerCase(); // ASCII-safe
+          } else if (':' == c) {
+            this._scheme = buffer;
+            buffer = '';
+            if (stateOverride) {
+              break loop;
+            }
+            if (isRelativeScheme(this._scheme)) {
+              this._isRelative = true;
+            }
+            if ('file' == this._scheme) {
+              state = 'relative';
+            } else if (this._isRelative && base && base._scheme == this._scheme) {
+              state = 'relative or authority';
+            } else if (this._isRelative) {
+              state = 'authority first slash';
+            } else {
+              state = 'scheme data';
+            }
+          } else if (!stateOverride) {
+            buffer = '';
+            cursor = 0;
+            state = 'no scheme';
+            continue;
+          } else if (EOF == c) {
+            break loop;
+          } else {
+            err('Code point not allowed in scheme: ' + c)
+            break loop;
+          }
+          break;
+
+        case 'scheme data':
+          if ('?' == c) {
+            this._query = '?';
+            state = 'query';
+          } else if ('#' == c) {
+            this._fragment = '#';
+            state = 'fragment';
+          } else {
+            // XXX error handling
+            if (EOF != c && '\t' != c && '\n' != c && '\r' != c) {
+              this._schemeData += percentEscape(c);
+            }
+          }
+          break;
+
+        case 'no scheme':
+          if (!base || !(isRelativeScheme(base._scheme))) {
+            err('Missing scheme.');
+            invalid.call(this);
+          } else {
+            state = 'relative';
+            continue;
+          }
+          break;
+
+        case 'relative or authority':
+          if ('/' == c && '/' == input[cursor+1]) {
+            state = 'authority ignore slashes';
+          } else {
+            err('Expected /, got: ' + c);
+            state = 'relative';
+            continue
+          }
+          break;
+
+        case 'relative':
+          this._isRelative = true;
+          if ('file' != this._scheme)
+            this._scheme = base._scheme;
+          if (EOF == c) {
+            this._host = base._host;
+            this._port = base._port;
+            this._path = base._path.slice();
+            this._query = base._query;
+            this._username = base._username;
+            this._password = base._password;
+            break loop;
+          } else if ('/' == c || '\\' == c) {
+            if ('\\' == c)
+              err('\\ is an invalid code point.');
+            state = 'relative slash';
+          } else if ('?' == c) {
+            this._host = base._host;
+            this._port = base._port;
+            this._path = base._path.slice();
+            this._query = '?';
+            this._username = base._username;
+            this._password = base._password;
+            state = 'query';
+          } else if ('#' == c) {
+            this._host = base._host;
+            this._port = base._port;
+            this._path = base._path.slice();
+            this._query = base._query;
+            this._fragment = '#';
+            this._username = base._username;
+            this._password = base._password;
+            state = 'fragment';
+          } else {
+            var nextC = input[cursor+1]
+            var nextNextC = input[cursor+2]
+            if (
+              'file' != this._scheme || !ALPHA.test(c) ||
+              (nextC != ':' && nextC != '|') ||
+              (EOF != nextNextC && '/' != nextNextC && '\\' != nextNextC && '?' != nextNextC && '#' != nextNextC)) {
+              this._host = base._host;
+              this._port = base._port;
+              this._username = base._username;
+              this._password = base._password;
+              this._path = base._path.slice();
+              this._path.pop();
+            }
+            state = 'relative path';
+            continue;
+          }
+          break;
+
+        case 'relative slash':
+          if ('/' == c || '\\' == c) {
+            if ('\\' == c) {
+              err('\\ is an invalid code point.');
+            }
+            if ('file' == this._scheme) {
+              state = 'file host';
+            } else {
+              state = 'authority ignore slashes';
+            }
+          } else {
+            if ('file' != this._scheme) {
+              this._host = base._host;
+              this._port = base._port;
+              this._username = base._username;
+              this._password = base._password;
+            }
+            state = 'relative path';
+            continue;
+          }
+          break;
+
+        case 'authority first slash':
+          if ('/' == c) {
+            state = 'authority second slash';
+          } else {
+            err("Expected '/', got: " + c);
+            state = 'authority ignore slashes';
+            continue;
+          }
+          break;
+
+        case 'authority second slash':
+          state = 'authority ignore slashes';
+          if ('/' != c) {
+            err("Expected '/', got: " + c);
+            continue;
+          }
+          break;
+
+        case 'authority ignore slashes':
+          if ('/' != c && '\\' != c) {
+            state = 'authority';
+            continue;
+          } else {
+            err('Expected authority, got: ' + c);
+          }
+          break;
+
+        case 'authority':
+          if ('@' == c) {
+            if (seenAt) {
+              err('@ already seen.');
+              buffer += '%40';
+            }
+            seenAt = true;
+            for (var i = 0; i < buffer.length; i++) {
+              var cp = buffer[i];
+              if ('\t' == cp || '\n' == cp || '\r' == cp) {
+                err('Invalid whitespace in authority.');
+                continue;
+              }
+              // XXX check URL code points
+              if (':' == cp && null === this._password) {
+                this._password = '';
+                continue;
+              }
+              var tempC = percentEscape(cp);
+              (null !== this._password) ? this._password += tempC : this._username += tempC;
+            }
+            buffer = '';
+          } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) {
+            cursor -= buffer.length;
+            buffer = '';
+            state = 'host';
+            continue;
+          } else {
+            buffer += c;
+          }
+          break;
+
+        case 'file host':
+          if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) {
+            if (buffer.length == 2 && ALPHA.test(buffer[0]) && (buffer[1] == ':' || buffer[1] == '|')) {
+              state = 'relative path';
+            } else if (buffer.length == 0) {
+              state = 'relative path start';
+            } else {
+              this._host = IDNAToASCII.call(this, buffer);
+              buffer = '';
+              state = 'relative path start';
+            }
+            continue;
+          } else if ('\t' == c || '\n' == c || '\r' == c) {
+            err('Invalid whitespace in file host.');
+          } else {
+            buffer += c;
+          }
+          break;
+
+        case 'host':
+        case 'hostname':
+          if (':' == c && !seenBracket) {
+            // XXX host parsing
+            this._host = IDNAToASCII.call(this, buffer);
+            buffer = '';
+            state = 'port';
+            if ('hostname' == stateOverride) {
+              break loop;
+            }
+          } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) {
+            this._host = IDNAToASCII.call(this, buffer);
+            buffer = '';
+            state = 'relative path start';
+            if (stateOverride) {
+              break loop;
+            }
+            continue;
+          } else if ('\t' != c && '\n' != c && '\r' != c) {
+            if ('[' == c) {
+              seenBracket = true;
+            } else if (']' == c) {
+              seenBracket = false;
+            }
+            buffer += c;
+          } else {
+            err('Invalid code point in host/hostname: ' + c);
+          }
+          break;
+
+        case 'port':
+          if (/[0-9]/.test(c)) {
+            buffer += c;
+          } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c || stateOverride) {
+            if ('' != buffer) {
+              var temp = parseInt(buffer, 10);
+              if (temp != relative[this._scheme]) {
+                this._port = temp + '';
+              }
+              buffer = '';
+            }
+            if (stateOverride) {
+              break loop;
+            }
+            state = 'relative path start';
+            continue;
+          } else if ('\t' == c || '\n' == c || '\r' == c) {
+            err('Invalid code point in port: ' + c);
+          } else {
+            invalid.call(this);
+          }
+          break;
+
+        case 'relative path start':
+          if ('\\' == c)
+            err("'\\' not allowed in path.");
+          state = 'relative path';
+          if ('/' != c && '\\' != c) {
+            continue;
+          }
+          break;
+
+        case 'relative path':
+          if (EOF == c || '/' == c || '\\' == c || (!stateOverride && ('?' == c || '#' == c))) {
+            if ('\\' == c) {
+              err('\\ not allowed in relative path.');
+            }
+            var tmp;
+            if (tmp = relativePathDotMapping[buffer.toLowerCase()]) {
+              buffer = tmp;
+            }
+            if ('..' == buffer) {
+              this._path.pop();
+              if ('/' != c && '\\' != c) {
+                this._path.push('');
+              }
+            } else if ('.' == buffer && '/' != c && '\\' != c) {
+              this._path.push('');
+            } else if ('.' != buffer) {
+              if ('file' == this._scheme && this._path.length == 0 && buffer.length == 2 && ALPHA.test(buffer[0]) && buffer[1] == '|') {
+                buffer = buffer[0] + ':';
+              }
+              this._path.push(buffer);
+            }
+            buffer = '';
+            if ('?' == c) {
+              this._query = '?';
+              state = 'query';
+            } else if ('#' == c) {
+              this._fragment = '#';
+              state = 'fragment';
+            }
+          } else if ('\t' != c && '\n' != c && '\r' != c) {
+            buffer += percentEscape(c);
+          }
+          break;
+
+        case 'query':
+          if (!stateOverride && '#' == c) {
+            this._fragment = '#';
+            state = 'fragment';
+          } else if (EOF != c && '\t' != c && '\n' != c && '\r' != c) {
+            this._query += percentEscapeQuery(c);
+          }
+          break;
+
+        case 'fragment':
+          if (EOF != c && '\t' != c && '\n' != c && '\r' != c) {
+            this._fragment += c;
+          }
+          break;
+      }
+
+      cursor++;
+    }
+  }
+
+  function clear() {
+    this._scheme = '';
+    this._schemeData = '';
+    this._username = '';
+    this._password = null;
+    this._host = '';
+    this._port = '';
+    this._path = [];
+    this._query = '';
+    this._fragment = '';
+    this._isInvalid = false;
+    this._isRelative = false;
+  }
+
+  // Does not process domain names or IP addresses.
+  // Does not handle encoding for the query parameter.
+  function jURL(url, base /* , encoding */) {
+    if (base !== undefined && !(base instanceof jURL))
+      base = new jURL(String(base));
+
+    this._url = url;
+    clear.call(this);
+
+    var input = url.replace(/^[ \t\r\n\f]+|[ \t\r\n\f]+$/g, '');
+    // encoding = encoding || 'utf-8'
+
+    parse.call(this, input, null, base);
+  }
+
+  jURL.prototype = {
+    toString: function() {
+      return this.href;
+    },
+    get href() {
+      if (this._isInvalid)
+        return this._url;
+
+      var authority = '';
+      if ('' != this._username || null != this._password) {
+        authority = this._username +
+            (null != this._password ? ':' + this._password : '') + '@';
+      }
+
+      return this.protocol +
+          (this._isRelative ? '//' + authority + this.host : '') +
+          this.pathname + this._query + this._fragment;
+    },
+    set href(href) {
+      clear.call(this);
+      parse.call(this, href);
+    },
+
+    get protocol() {
+      return this._scheme + ':';
+    },
+    set protocol(protocol) {
+      if (this._isInvalid)
+        return;
+      parse.call(this, protocol + ':', 'scheme start');
+    },
+
+    get host() {
+      return this._isInvalid ? '' : this._port ?
+          this._host + ':' + this._port : this._host;
+    },
+    set host(host) {
+      if (this._isInvalid || !this._isRelative)
+        return;
+      parse.call(this, host, 'host');
+    },
+
+    get hostname() {
+      return this._host;
+    },
+    set hostname(hostname) {
+      if (this._isInvalid || !this._isRelative)
+        return;
+      parse.call(this, hostname, 'hostname');
+    },
+
+    get port() {
+      return this._port;
+    },
+    set port(port) {
+      if (this._isInvalid || !this._isRelative)
+        return;
+      parse.call(this, port, 'port');
+    },
+
+    get pathname() {
+      return this._isInvalid ? '' : this._isRelative ?
+          '/' + this._path.join('/') : this._schemeData;
+    },
+    set pathname(pathname) {
+      if (this._isInvalid || !this._isRelative)
+        return;
+      this._path = [];
+      parse.call(this, pathname, 'relative path start');
+    },
+
+    get search() {
+      return this._isInvalid || !this._query || '?' == this._query ?
+          '' : this._query;
+    },
+    set search(search) {
+      if (this._isInvalid || !this._isRelative)
+        return;
+      this._query = '?';
+      if ('?' == search[0])
+        search = search.slice(1);
+      parse.call(this, search, 'query');
+    },
+
+    get hash() {
+      return this._isInvalid || !this._fragment || '#' == this._fragment ?
+          '' : this._fragment;
+    },
+    set hash(hash) {
+      if (this._isInvalid)
+        return;
+      this._fragment = '#';
+      if ('#' == hash[0])
+        hash = hash.slice(1);
+      parse.call(this, hash, 'fragment');
+    },
+
+    get origin() {
+      var host;
+      if (this._isInvalid || !this._scheme) {
+        return '';
+      }
+      // javascript: Gecko returns String(""), WebKit/Blink String("null")
+      // Gecko throws error for "data://"
+      // data: Gecko returns "", Blink returns "data://", WebKit returns "null"
+      // Gecko returns String("") for file: mailto:
+      // WebKit/Blink returns String("SCHEME://") for file: mailto:
+      switch (this._scheme) {
+        case 'data':
+        case 'file':
+        case 'javascript':
+        case 'mailto':
+          return 'null';
+      }
+      host = this.host;
+      if (!host) {
+        return '';
+      }
+      return this._scheme + '://' + host;
+    }
+  };
+
+  // Copy over the static methods
+  var OriginalURL = scope.URL;
+  if (OriginalURL) {
+    jURL.createObjectURL = function(blob) {
+      // IE extension allows a second optional options argument.
+      // http://msdn.microsoft.com/en-us/library/ie/hh772302(v=vs.85).aspx
+      return OriginalURL.createObjectURL.apply(OriginalURL, arguments);
+    };
+    jURL.revokeObjectURL = function(url) {
+      OriginalURL.revokeObjectURL(url);
+    };
+  }
+
+  scope.URL = jURL;
+  /* jshint ignore:end */
+})(globalScope);
+
+exports.FONT_IDENTITY_MATRIX = FONT_IDENTITY_MATRIX;
+exports.IDENTITY_MATRIX = IDENTITY_MATRIX;
+exports.OPS = OPS;
+exports.VERBOSITY_LEVELS = VERBOSITY_LEVELS;
+exports.UNSUPPORTED_FEATURES = UNSUPPORTED_FEATURES;
+exports.AnnotationBorderStyleType = AnnotationBorderStyleType;
+exports.AnnotationFlag = AnnotationFlag;
+exports.AnnotationType = AnnotationType;
+exports.FontType = FontType;
+exports.ImageKind = ImageKind;
+exports.InvalidPDFException = InvalidPDFException;
+exports.MessageHandler = MessageHandler;
+exports.MissingDataException = MissingDataException;
+exports.MissingPDFException = MissingPDFException;
+exports.NotImplementedException = NotImplementedException;
+exports.PageViewport = PageViewport;
+exports.PasswordException = PasswordException;
+exports.PasswordResponses = PasswordResponses;
+exports.StatTimer = StatTimer;
+exports.StreamType = StreamType;
+exports.TextRenderingMode = TextRenderingMode;
+exports.UnexpectedResponseException = UnexpectedResponseException;
+exports.UnknownErrorException = UnknownErrorException;
+exports.Util = Util;
+exports.XRefParseException = XRefParseException;
+exports.arrayByteLength = arrayByteLength;
+exports.arraysToBytes = arraysToBytes;
+exports.assert = assert;
+exports.bytesToString = bytesToString;
+exports.createBlob = createBlob;
+exports.createPromiseCapability = createPromiseCapability;
+exports.createObjectURL = createObjectURL;
+exports.deprecated = deprecated;
+exports.error = error;
+exports.getLookupTableFactory = getLookupTableFactory;
+exports.getVerbosityLevel = getVerbosityLevel;
+exports.globalScope = globalScope;
+exports.info = info;
+exports.isArray = isArray;
+exports.isArrayBuffer = isArrayBuffer;
+exports.isBool = isBool;
+exports.isEmptyObj = isEmptyObj;
+exports.isInt = isInt;
+exports.isNum = isNum;
+exports.isString = isString;
+exports.isSameOrigin = isSameOrigin;
+exports.isValidUrl = isValidUrl;
+exports.isLittleEndian = isLittleEndian;
+exports.isEvalSupported = isEvalSupported;
+exports.loadJpegStream = loadJpegStream;
+exports.log2 = log2;
+exports.readInt8 = readInt8;
+exports.readUint16 = readUint16;
+exports.readUint32 = readUint32;
+exports.removeNullCharacters = removeNullCharacters;
+exports.setVerbosityLevel = setVerbosityLevel;
+exports.shadow = shadow;
+exports.string32 = string32;
+exports.stringToBytes = stringToBytes;
+exports.stringToPDFString = stringToPDFString;
+exports.stringToUTF8String = stringToUTF8String;
+exports.utf8StringToString = utf8StringToString;
+exports.warn = warn;
+}));
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsDisplayDOMUtils = {}), root.pdfjsSharedUtil);
+  }
+}(this, function (exports, sharedUtil) {
+
+var removeNullCharacters = sharedUtil.removeNullCharacters;
+var warn = sharedUtil.warn;
+
+/**
+ * Optimised CSS custom property getter/setter.
+ * @class
+ */
+var CustomStyle = (function CustomStyleClosure() {
+
+  // As noted on: http://www.zachstronaut.com/posts/2009/02/17/
+  //              animate-css-transforms-firefox-webkit.html
+  // in some versions of IE9 it is critical that ms appear in this list
+  // before Moz
+  var prefixes = ['ms', 'Moz', 'Webkit', 'O'];
+  var _cache = Object.create(null);
+
+  function CustomStyle() {}
+
+  CustomStyle.getProp = function get(propName, element) {
+    // check cache only when no element is given
+    if (arguments.length === 1 && typeof _cache[propName] === 'string') {
+      return _cache[propName];
+    }
+
+    element = element || document.documentElement;
+    var style = element.style, prefixed, uPropName;
+
+    // test standard property first
+    if (typeof style[propName] === 'string') {
+      return (_cache[propName] = propName);
+    }
+
+    // capitalize
+    uPropName = propName.charAt(0).toUpperCase() + propName.slice(1);
+
+    // test vendor specific properties
+    for (var i = 0, l = prefixes.length; i < l; i++) {
+      prefixed = prefixes[i] + uPropName;
+      if (typeof style[prefixed] === 'string') {
+        return (_cache[propName] = prefixed);
+      }
+    }
+
+    //if all fails then set to undefined
+    return (_cache[propName] = 'undefined');
+  };
+
+  CustomStyle.setProp = function set(propName, element, str) {
+    var prop = this.getProp(propName);
+    if (prop !== 'undefined') {
+      element.style[prop] = str;
+    }
+  };
+
+  return CustomStyle;
+})();
+
+function hasCanvasTypedArrays() {
+  var canvas = document.createElement('canvas');
+  canvas.width = canvas.height = 1;
+  var ctx = canvas.getContext('2d');
+  var imageData = ctx.createImageData(1, 1);
+  return (typeof imageData.data.buffer !== 'undefined');
+}
+
+var LinkTarget = {
+  NONE: 0, // Default value.
+  SELF: 1,
+  BLANK: 2,
+  PARENT: 3,
+  TOP: 4,
+};
+
+var LinkTargetStringMap = [
+  '',
+  '_self',
+  '_blank',
+  '_parent',
+  '_top'
+];
+
+/**
+ * @typedef ExternalLinkParameters
+ * @typedef {Object} ExternalLinkParameters
+ * @property {string} url - An absolute URL.
+ * @property {LinkTarget} target - The link target.
+ * @property {string} rel - The link relationship.
+ */
+
+/**
+ * Adds various attributes (href, title, target, rel) to hyperlinks.
+ * @param {HTMLLinkElement} link - The link element.
+ * @param {ExternalLinkParameters} params
+ */
+function addLinkAttributes(link, params) {
+  var url = params && params.url;
+  link.href = link.title = (url ? removeNullCharacters(url) : '');
+
+  if (url) {
+    var target = params.target;
+    if (typeof target === 'undefined') {
+      target = getDefaultSetting('externalLinkTarget');
+    }
+    link.target = LinkTargetStringMap[target];
+
+    var rel = params.rel;
+    if (typeof rel === 'undefined') {
+      rel = getDefaultSetting('externalLinkRel');
+    }
+    link.rel = rel;
+  }
+}
+
+// Gets the file name from a given URL.
+function getFilenameFromUrl(url) {
+  var anchor = url.indexOf('#');
+  var query = url.indexOf('?');
+  var end = Math.min(
+    anchor > 0 ? anchor : url.length,
+    query > 0 ? query : url.length);
+  return url.substring(url.lastIndexOf('/', end) + 1, end);
+}
+
+function getDefaultSetting(id) {
+  // The list of the settings and their default is maintained for backward
+  // compatibility and shall not be extended or modified. See also global.js.
+  var globalSettings = sharedUtil.globalScope.PDFJS;
+  switch (id) {
+    case 'pdfBug':
+      return globalSettings ? globalSettings.pdfBug : false;
+    case 'disableAutoFetch':
+      return globalSettings ? globalSettings.disableAutoFetch : false;
+    case 'disableStream':
+      return globalSettings ? globalSettings.disableStream : false;
+    case 'disableRange':
+      return globalSettings ? globalSettings.disableRange : false;
+    case 'disableFontFace':
+      return globalSettings ? globalSettings.disableFontFace : false;
+    case 'disableCreateObjectURL':
+      return globalSettings ? globalSettings.disableCreateObjectURL : false;
+    case 'disableWebGL':
+      return globalSettings ? globalSettings.disableWebGL : true;
+    case 'cMapUrl':
+      return globalSettings ? globalSettings.cMapUrl : null;
+    case 'cMapPacked':
+      return globalSettings ? globalSettings.cMapPacked : false;
+    case 'postMessageTransfers':
+      return globalSettings ? globalSettings.postMessageTransfers : true;
+    case 'workerSrc':
+      return globalSettings ? globalSettings.workerSrc : null;
+    case 'disableWorker':
+      return globalSettings ? globalSettings.disableWorker : false;
+    case 'maxImageSize':
+      return globalSettings ? globalSettings.maxImageSize : -1;
+    case 'imageResourcesPath':
+      return globalSettings ? globalSettings.imageResourcesPath : '';
+    case 'isEvalSupported':
+      return globalSettings ? globalSettings.isEvalSupported : true;
+    case 'externalLinkTarget':
+      if (!globalSettings) {
+        return LinkTarget.NONE;
+      }
+      switch (globalSettings.externalLinkTarget) {
+        case LinkTarget.NONE:
+        case LinkTarget.SELF:
+        case LinkTarget.BLANK:
+        case LinkTarget.PARENT:
+        case LinkTarget.TOP:
+          return globalSettings.externalLinkTarget;
+      }
+      warn('PDFJS.externalLinkTarget is invalid: ' +
+           globalSettings.externalLinkTarget);
+      // Reset the external link target, to suppress further warnings.
+      globalSettings.externalLinkTarget = LinkTarget.NONE;
+      return LinkTarget.NONE;
+    case 'externalLinkRel':
+      return globalSettings ? globalSettings.externalLinkRel : 'noreferrer';
+    case 'enableStats':
+      return !!(globalSettings && globalSettings.enableStats);
+    default:
+      throw new Error('Unknown default setting: ' + id);
+  }
+}
+
+function isExternalLinkTargetSet() {
+  var externalLinkTarget = getDefaultSetting('externalLinkTarget');
+  switch (externalLinkTarget) {
+    case LinkTarget.NONE:
+      return false;
+    case LinkTarget.SELF:
+    case LinkTarget.BLANK:
+    case LinkTarget.PARENT:
+    case LinkTarget.TOP:
+      return true;
+  }
+}
+
+exports.CustomStyle = CustomStyle;
+exports.addLinkAttributes = addLinkAttributes;
+exports.isExternalLinkTargetSet = isExternalLinkTargetSet;
+exports.getFilenameFromUrl = getFilenameFromUrl;
+exports.LinkTarget = LinkTarget;
+exports.hasCanvasTypedArrays = hasCanvasTypedArrays;
+exports.getDefaultSetting = getDefaultSetting;
+}));
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsDisplayFontLoader = {}), root.pdfjsSharedUtil);
+  }
+}(this, function (exports, sharedUtil) {
+
+var assert = sharedUtil.assert;
+var bytesToString = sharedUtil.bytesToString;
+var string32 = sharedUtil.string32;
+var shadow = sharedUtil.shadow;
+var warn = sharedUtil.warn;
+
+function FontLoader(docId) {
+  this.docId = docId;
+  this.styleElement = null;
+  this.nativeFontFaces = [];
+  this.loadTestFontId = 0;
+  this.loadingContext = {
+    requests: [],
+    nextRequestId: 0
+  };
+}
+FontLoader.prototype = {
+  insertRule: function fontLoaderInsertRule(rule) {
+    var styleElement = this.styleElement;
+    if (!styleElement) {
+      styleElement = this.styleElement = document.createElement('style');
+      styleElement.id = 'PDFJS_FONT_STYLE_TAG_' + this.docId;
+      document.documentElement.getElementsByTagName('head')[0].appendChild(
+        styleElement);
+    }
+
+    var styleSheet = styleElement.sheet;
+    styleSheet.insertRule(rule, styleSheet.cssRules.length);
+  },
+
+  clear: function fontLoaderClear() {
+    var styleElement = this.styleElement;
+    if (styleElement) {
+      styleElement.parentNode.removeChild(styleElement);
+      styleElement = this.styleElement = null;
+    }
+    this.nativeFontFaces.forEach(function(nativeFontFace) {
+      document.fonts.delete(nativeFontFace);
+    });
+    this.nativeFontFaces.length = 0;
+  },
+  get loadTestFont() {
+    // This is a CFF font with 1 glyph for '.' that fills its entire width and
+    // height.
+    return shadow(this, 'loadTestFont', atob(
+      'T1RUTwALAIAAAwAwQ0ZGIDHtZg4AAAOYAAAAgUZGVE1lkzZwAAAEHAAAABxHREVGABQAFQ' +
+      'AABDgAAAAeT1MvMlYNYwkAAAEgAAAAYGNtYXABDQLUAAACNAAAAUJoZWFk/xVFDQAAALwA' +
+      'AAA2aGhlYQdkA+oAAAD0AAAAJGhtdHgD6AAAAAAEWAAAAAZtYXhwAAJQAAAAARgAAAAGbm' +
+      'FtZVjmdH4AAAGAAAAAsXBvc3T/hgAzAAADeAAAACAAAQAAAAEAALZRFsRfDzz1AAsD6AAA' +
+      'AADOBOTLAAAAAM4KHDwAAAAAA+gDIQAAAAgAAgAAAAAAAAABAAADIQAAAFoD6AAAAAAD6A' +
+      'ABAAAAAAAAAAAAAAAAAAAAAQAAUAAAAgAAAAQD6AH0AAUAAAKKArwAAACMAooCvAAAAeAA' +
+      'MQECAAACAAYJAAAAAAAAAAAAAQAAAAAAAAAAAAAAAFBmRWQAwAAuAC4DIP84AFoDIQAAAA' +
+      'AAAQAAAAAAAAAAACAAIAABAAAADgCuAAEAAAAAAAAAAQAAAAEAAAAAAAEAAQAAAAEAAAAA' +
+      'AAIAAQAAAAEAAAAAAAMAAQAAAAEAAAAAAAQAAQAAAAEAAAAAAAUAAQAAAAEAAAAAAAYAAQ' +
+      'AAAAMAAQQJAAAAAgABAAMAAQQJAAEAAgABAAMAAQQJAAIAAgABAAMAAQQJAAMAAgABAAMA' +
+      'AQQJAAQAAgABAAMAAQQJAAUAAgABAAMAAQQJAAYAAgABWABYAAAAAAAAAwAAAAMAAAAcAA' +
+      'EAAAAAADwAAwABAAAAHAAEACAAAAAEAAQAAQAAAC7//wAAAC7////TAAEAAAAAAAABBgAA' +
+      'AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAA' +
+      'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
+      'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
+      'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
+      'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAA' +
+      'AAAAD/gwAyAAAAAQAAAAAAAAAAAAAAAAAAAAABAAQEAAEBAQJYAAEBASH4DwD4GwHEAvgc' +
+      'A/gXBIwMAYuL+nz5tQXkD5j3CBLnEQACAQEBIVhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWF' +
+      'hYWFhYWFhYAAABAQAADwACAQEEE/t3Dov6fAH6fAT+fPp8+nwHDosMCvm1Cvm1DAz6fBQA' +
+      'AAAAAAABAAAAAMmJbzEAAAAAzgTjFQAAAADOBOQpAAEAAAAAAAAADAAUAAQAAAABAAAAAg' +
+      'ABAAAAAAAAAAAD6AAAAAAAAA=='
+    ));
+  },
+
+  addNativeFontFace: function fontLoader_addNativeFontFace(nativeFontFace) {
+    this.nativeFontFaces.push(nativeFontFace);
+    document.fonts.add(nativeFontFace);
+  },
+
+  bind: function fontLoaderBind(fonts, callback) {
+    var rules = [];
+    var fontsToLoad = [];
+    var fontLoadPromises = [];
+    var getNativeFontPromise = function(nativeFontFace) {
+      // Return a promise that is always fulfilled, even when the font fails to
+      // load.
+      return nativeFontFace.loaded.catch(function(e) {
+        warn('Failed to load font "' + nativeFontFace.family + '": ' + e);
+      });
+    };
+    for (var i = 0, ii = fonts.length; i < ii; i++) {
+      var font = fonts[i];
+
+      // Add the font to the DOM only once or skip if the font
+      // is already loaded.
+      if (font.attached || font.loading === false) {
+        continue;
+      }
+      font.attached = true;
+
+      if (FontLoader.isFontLoadingAPISupported) {
+        var nativeFontFace = font.createNativeFontFace();
+        if (nativeFontFace) {
+          this.addNativeFontFace(nativeFontFace);
+          fontLoadPromises.push(getNativeFontPromise(nativeFontFace));
+        }
+      } else {
+        var rule = font.createFontFaceRule();
+        if (rule) {
+          this.insertRule(rule);
+          rules.push(rule);
+          fontsToLoad.push(font);
+        }
+      }
+    }
+
+    var request = this.queueLoadingCallback(callback);
+    if (FontLoader.isFontLoadingAPISupported) {
+      Promise.all(fontLoadPromises).then(function() {
+        request.complete();
+      });
+    } else if (rules.length > 0 && !FontLoader.isSyncFontLoadingSupported) {
+      this.prepareFontLoadEvent(rules, fontsToLoad, request);
+    } else {
+      request.complete();
+    }
+  },
+
+  queueLoadingCallback: function FontLoader_queueLoadingCallback(callback) {
+    function LoadLoader_completeRequest() {
+      assert(!request.end, 'completeRequest() cannot be called twice');
+      request.end = Date.now();
+
+      // sending all completed requests in order how they were queued
+      while (context.requests.length > 0 && context.requests[0].end) {
+        var otherRequest = context.requests.shift();
+        setTimeout(otherRequest.callback, 0);
+      }
+    }
+
+    var context = this.loadingContext;
+    var requestId = 'pdfjs-font-loading-' + (context.nextRequestId++);
+    var request = {
+      id: requestId,
+      complete: LoadLoader_completeRequest,
+      callback: callback,
+      started: Date.now()
+    };
+    context.requests.push(request);
+    return request;
+  },
+
+  prepareFontLoadEvent: function fontLoaderPrepareFontLoadEvent(rules,
+                                                                fonts,
+                                                                request) {
+      /** Hack begin */
+      // There's currently no event when a font has finished downloading so the
+      // following code is a dirty hack to 'guess' when a font is
+      // ready. It's assumed fonts are loaded in order, so add a known test
+      // font after the desired fonts and then test for the loading of that
+      // test font.
+
+      function int32(data, offset) {
+        return (data.charCodeAt(offset) << 24) |
+               (data.charCodeAt(offset + 1) << 16) |
+               (data.charCodeAt(offset + 2) << 8) |
+               (data.charCodeAt(offset + 3) & 0xff);
+      }
+
+      function spliceString(s, offset, remove, insert) {
+        var chunk1 = s.substr(0, offset);
+        var chunk2 = s.substr(offset + remove);
+        return chunk1 + insert + chunk2;
+      }
+
+      var i, ii;
+
+      var canvas = document.createElement('canvas');
+      canvas.width = 1;
+      canvas.height = 1;
+      var ctx = canvas.getContext('2d');
+
+      var called = 0;
+      function isFontReady(name, callback) {
+        called++;
+        // With setTimeout clamping this gives the font ~100ms to load.
+        if(called > 30) {
+          warn('Load test font never loaded.');
+          callback();
+          return;
+        }
+        ctx.font = '30px ' + name;
+        ctx.fillText('.', 0, 20);
+        var imageData = ctx.getImageData(0, 0, 1, 1);
+        if (imageData.data[3] > 0) {
+          callback();
+          return;
+        }
+        setTimeout(isFontReady.bind(null, name, callback));
+      }
+
+      var loadTestFontId = 'lt' + Date.now() + this.loadTestFontId++;
+      // Chromium seems to cache fonts based on a hash of the actual font data,
+      // so the font must be modified for each load test else it will appear to
+      // be loaded already.
+      // TODO: This could maybe be made faster by avoiding the btoa of the full
+      // font by splitting it in chunks before hand and padding the font id.
+      var data = this.loadTestFont;
+      var COMMENT_OFFSET = 976; // has to be on 4 byte boundary (for checksum)
+      data = spliceString(data, COMMENT_OFFSET, loadTestFontId.length,
+                          loadTestFontId);
+      // CFF checksum is important for IE, adjusting it
+      var CFF_CHECKSUM_OFFSET = 16;
+      var XXXX_VALUE = 0x58585858; // the "comment" filled with 'X'
+      var checksum = int32(data, CFF_CHECKSUM_OFFSET);
+      for (i = 0, ii = loadTestFontId.length - 3; i < ii; i += 4) {
+        checksum = (checksum - XXXX_VALUE + int32(loadTestFontId, i)) | 0;
+      }
+      if (i < loadTestFontId.length) { // align to 4 bytes boundary
+        checksum = (checksum - XXXX_VALUE +
+                    int32(loadTestFontId + 'XXX', i)) | 0;
+      }
+      data = spliceString(data, CFF_CHECKSUM_OFFSET, 4, string32(checksum));
+
+      var url = 'url(data:font/opentype;base64,' + btoa(data) + ');';
+      var rule = '@font-face { font-family:"' + loadTestFontId + '";src:' +
+                 url + '}';
+      this.insertRule(rule);
+
+      var names = [];
+      for (i = 0, ii = fonts.length; i < ii; i++) {
+        names.push(fonts[i].loadedName);
+      }
+      names.push(loadTestFontId);
+
+      var div = document.createElement('div');
+      div.setAttribute('style',
+                       'visibility: hidden;' +
+                       'width: 10px; height: 10px;' +
+                       'position: absolute; top: 0px; left: 0px;');
+      for (i = 0, ii = names.length; i < ii; ++i) {
+        var span = document.createElement('span');
+        span.textContent = 'Hi';
+        span.style.fontFamily = names[i];
+        div.appendChild(span);
+      }
+      document.body.appendChild(div);
+
+      isFontReady(loadTestFontId, function() {
+        document.body.removeChild(div);
+        request.complete();
+      });
+      /** Hack end */
+  }
+};
+FontLoader.isFontLoadingAPISupported = typeof document !== 'undefined' &&
+                                       !!document.fonts;
+Object.defineProperty(FontLoader, 'isSyncFontLoadingSupported', {
+  get: function () {
+    if (typeof navigator === 'undefined') {
+      // node.js - we can pretend sync font loading is supported.
+      return shadow(FontLoader, 'isSyncFontLoadingSupported', true);
+    }
+
+    var supported = false;
+
+    // User agent string sniffing is bad, but there is no reliable way to tell
+    // if font is fully loaded and ready to be used with canvas.
+    var m = /Mozilla\/5.0.*?rv:(\d+).*? Gecko/.exec(navigator.userAgent);
+    if (m && m[1] >= 14) {
+      supported = true;
+    }
+    // TODO other browsers
+    return shadow(FontLoader, 'isSyncFontLoadingSupported', supported);
+  },
+  enumerable: true,
+  configurable: true
+});
+
+var IsEvalSupportedCached = {
+  get value() {
+    return shadow(this, 'value', sharedUtil.isEvalSupported());
+  }
+};
+
+var FontFaceObject = (function FontFaceObjectClosure() {
+  function FontFaceObject(translatedData, options) {
+    this.compiledGlyphs = Object.create(null);
+    // importing translated data
+    for (var i in translatedData) {
+      this[i] = translatedData[i];
+    }
+    this.options = options;
+  }
+  FontFaceObject.prototype = {
+    createNativeFontFace: function FontFaceObject_createNativeFontFace() {
+      if (!this.data) {
+        return null;
+      }
+
+      if (this.options.disableFontFace) {
+        this.disableFontFace = true;
+        return null;
+      }
+
+      var nativeFontFace = new FontFace(this.loadedName, this.data, {});
+
+      if (this.options.fontRegistry) {
+        this.options.fontRegistry.registerFont(this);
+      }
+      return nativeFontFace;
+    },
+
+    createFontFaceRule: function FontFaceObject_createFontFaceRule() {
+      if (!this.data) {
+        return null;
+      }
+
+      if (this.options.disableFontFace) {
+        this.disableFontFace = true;
+        return null;
+      }
+
+      var data = bytesToString(new Uint8Array(this.data));
+      var fontName = this.loadedName;
+
+      // Add the font-face rule to the document
+      var url = ('url(data:' + this.mimetype + ';base64,' + btoa(data) + ');');
+      var rule = '@font-face { font-family:"' + fontName + '";src:' + url + '}';
+
+      if (this.options.fontRegistry) {
+        this.options.fontRegistry.registerFont(this, url);
+      }
+
+      return rule;
+    },
+
+    getPathGenerator:
+        function FontFaceObject_getPathGenerator(objs, character) {
+      if (!(character in this.compiledGlyphs)) {
+        var cmds = objs.get(this.loadedName + '_path_' + character);
+        var current, i, len;
+
+        // If we can, compile cmds into JS for MAXIMUM SPEED
+        if (this.options.isEvalSupported && IsEvalSupportedCached.value) {
+          var args, js = '';
+          for (i = 0, len = cmds.length; i < len; i++) {
+            current = cmds[i];
+
+            if (current.args !== undefined) {
+              args = current.args.join(',');
+            } else {
+              args = '';
+            }
+
+            js += 'c.' + current.cmd + '(' + args + ');\n';
+          }
+          /* jshint -W054 */
+          this.compiledGlyphs[character] = new Function('c', 'size', js);
+        } else {
+          // But fall back on using Function.prototype.apply() if we're
+          // blocked from using eval() for whatever reason (like CSP policies)
+          this.compiledGlyphs[character] = function(c, size) {
+            for (i = 0, len = cmds.length; i < len; i++) {
+              current = cmds[i];
+
+              if (current.cmd === 'scale') {
+                current.args = [size, -size];
+              }
+
+              c[current.cmd].apply(c, current.args);
+            }
+          };
+        }
+      }
+      return this.compiledGlyphs[character];
+    }
+  };
+  return FontFaceObject;
+})();
+
+exports.FontFaceObject = FontFaceObject;
+exports.FontLoader = FontLoader;
+}));
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsDisplayMetadata = {}), root.pdfjsSharedUtil);
+  }
+}(this, function (exports, sharedUtil) {
+
+var error = sharedUtil.error;
+
+  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 = Object.create(null);
+    this.parse();
+  }
+
+  Metadata.prototype = {
+    parse: function Metadata_parse() {
+      var doc = this.metaDocument;
+      var rdf = doc.documentElement;
+
+      if (rdf.nodeName.toLowerCase() !== 'rdf:rdf') { // Wrapped in <xmpmeta>
+        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';
+    }
+  };
+
+exports.Metadata = Metadata;
+}));
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsDisplaySVG = {}), root.pdfjsSharedUtil);
+  }
+}(this, function (exports, sharedUtil) {
+var FONT_IDENTITY_MATRIX = sharedUtil.FONT_IDENTITY_MATRIX;
+var IDENTITY_MATRIX = sharedUtil.IDENTITY_MATRIX;
+var ImageKind = sharedUtil.ImageKind;
+var OPS = sharedUtil.OPS;
+var Util = sharedUtil.Util;
+var isNum = sharedUtil.isNum;
+var isArray = sharedUtil.isArray;
+var warn = sharedUtil.warn;
+var createObjectURL = sharedUtil.createObjectURL;
+
+var SVG_DEFAULTS = {
+  fontStyle: 'normal',
+  fontWeight: 'normal',
+  fillColor: '#000000'
+};
+
+var convertImgDataToPng = (function convertImgDataToPngClosure() {
+  var PNG_HEADER =
+    new Uint8Array([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]);
+
+  var CHUNK_WRAPPER_SIZE = 12;
+
+  var crcTable = new Int32Array(256);
+  for (var i = 0; i < 256; i++) {
+    var c = i;
+    for (var h = 0; h < 8; h++) {
+      if (c & 1) {
+        c = 0xedB88320 ^ ((c >> 1) & 0x7fffffff);
+      } else {
+        c = (c >> 1) & 0x7fffffff;
+      }
+    }
+    crcTable[i] = c;
+  }
+
+  function crc32(data, start, end) {
+    var crc = -1;
+    for (var i = start; i < end; i++) {
+      var a = (crc ^ data[i]) & 0xff;
+      var b = crcTable[a];
+      crc = (crc >>> 8) ^ b;
+    }
+    return crc ^ -1;
+  }
+
+  function writePngChunk(type, body, data, offset) {
+    var p = offset;
+    var len = body.length;
+
+    data[p] = len >> 24 & 0xff;
+    data[p + 1] = len >> 16 & 0xff;
+    data[p + 2] = len >> 8 & 0xff;
+    data[p + 3] = len & 0xff;
+    p += 4;
+
+    data[p] = type.charCodeAt(0) & 0xff;
+    data[p + 1] = type.charCodeAt(1) & 0xff;
+    data[p + 2] = type.charCodeAt(2) & 0xff;
+    data[p + 3] = type.charCodeAt(3) & 0xff;
+    p += 4;
+
+    data.set(body, p);
+    p += body.length;
+
+    var crc = crc32(data, offset + 4, p);
+
+    data[p] = crc >> 24 & 0xff;
+    data[p + 1] = crc >> 16 & 0xff;
+    data[p + 2] = crc >> 8 & 0xff;
+    data[p + 3] = crc & 0xff;
+  }
+
+  function adler32(data, start, end) {
+    var a = 1;
+    var b = 0;
+    for (var i = start; i < end; ++i) {
+      a = (a + (data[i] & 0xff)) % 65521;
+      b = (b + a) % 65521;
+    }
+    return (b << 16) | a;
+  }
+
+  function encode(imgData, kind, forceDataSchema) {
+    var width = imgData.width;
+    var height = imgData.height;
+    var bitDepth, colorType, lineSize;
+    var bytes = imgData.data;
+
+    switch (kind) {
+      case ImageKind.GRAYSCALE_1BPP:
+        colorType = 0;
+        bitDepth = 1;
+        lineSize = (width + 7) >> 3;
+        break;
+      case ImageKind.RGB_24BPP:
+        colorType = 2;
+        bitDepth = 8;
+        lineSize = width * 3;
+        break;
+      case ImageKind.RGBA_32BPP:
+        colorType = 6;
+        bitDepth = 8;
+        lineSize = width * 4;
+        break;
+      default:
+        throw new Error('invalid format');
+    }
+
+    // prefix every row with predictor 0
+    var literals = new Uint8Array((1 + lineSize) * height);
+    var offsetLiterals = 0, offsetBytes = 0;
+    var y, i;
+    for (y = 0; y < height; ++y) {
+      literals[offsetLiterals++] = 0; // no prediction
+      literals.set(bytes.subarray(offsetBytes, offsetBytes + lineSize),
+                   offsetLiterals);
+      offsetBytes += lineSize;
+      offsetLiterals += lineSize;
+    }
+
+    if (kind === ImageKind.GRAYSCALE_1BPP) {
+      // inverting for B/W
+      offsetLiterals = 0;
+      for (y = 0; y < height; y++) {
+        offsetLiterals++; // skipping predictor
+        for (i = 0; i < lineSize; i++) {
+          literals[offsetLiterals++] ^= 0xFF;
+        }
+      }
+    }
+
+    var ihdr = new Uint8Array([
+      width >> 24 & 0xff,
+      width >> 16 & 0xff,
+      width >> 8 & 0xff,
+      width & 0xff,
+      height >> 24 & 0xff,
+      height >> 16 & 0xff,
+      height >> 8 & 0xff,
+      height & 0xff,
+      bitDepth, // bit depth
+      colorType, // color type
+      0x00, // compression method
+      0x00, // filter method
+      0x00 // interlace method
+    ]);
+
+    var len = literals.length;
+    var maxBlockLength = 0xFFFF;
+
+    var deflateBlocks = Math.ceil(len / maxBlockLength);
+    var idat = new Uint8Array(2 + len + deflateBlocks * 5 + 4);
+    var pi = 0;
+    idat[pi++] = 0x78; // compression method and flags
+    idat[pi++] = 0x9c; // flags
+
+    var pos = 0;
+    while (len > maxBlockLength) {
+      // writing non-final DEFLATE blocks type 0 and length of 65535
+      idat[pi++] = 0x00;
+      idat[pi++] = 0xff;
+      idat[pi++] = 0xff;
+      idat[pi++] = 0x00;
+      idat[pi++] = 0x00;
+      idat.set(literals.subarray(pos, pos + maxBlockLength), pi);
+      pi += maxBlockLength;
+      pos += maxBlockLength;
+      len -= maxBlockLength;
+    }
+
+    // writing non-final DEFLATE blocks type 0
+    idat[pi++] = 0x01;
+    idat[pi++] = len & 0xff;
+    idat[pi++] = len >> 8 & 0xff;
+    idat[pi++] = (~len & 0xffff) & 0xff;
+    idat[pi++] = (~len & 0xffff) >> 8 & 0xff;
+    idat.set(literals.subarray(pos), pi);
+    pi += literals.length - pos;
+
+    var adler = adler32(literals, 0, literals.length); // checksum
+    idat[pi++] = adler >> 24 & 0xff;
+    idat[pi++] = adler >> 16 & 0xff;
+    idat[pi++] = adler >> 8 & 0xff;
+    idat[pi++] = adler & 0xff;
+
+    // PNG will consists: header, IHDR+data, IDAT+data, and IEND.
+    var pngLength = PNG_HEADER.length + (CHUNK_WRAPPER_SIZE * 3) +
+                    ihdr.length + idat.length;
+    var data = new Uint8Array(pngLength);
+    var offset = 0;
+    data.set(PNG_HEADER, offset);
+    offset += PNG_HEADER.length;
+    writePngChunk('IHDR', ihdr, data, offset);
+    offset += CHUNK_WRAPPER_SIZE + ihdr.length;
+    writePngChunk('IDATA', idat, data, offset);
+    offset += CHUNK_WRAPPER_SIZE + idat.length;
+    writePngChunk('IEND', new Uint8Array(0), data, offset);
+
+    return createObjectURL(data, 'image/png', forceDataSchema);
+  }
+
+  return function convertImgDataToPng(imgData, forceDataSchema) {
+    var kind = (imgData.kind === undefined ?
+                ImageKind.GRAYSCALE_1BPP : imgData.kind);
+    return encode(imgData, kind, forceDataSchema);
+  };
+})();
+
+var SVGExtraState = (function SVGExtraStateClosure() {
+  function SVGExtraState() {
+    this.fontSizeScale = 1;
+    this.fontWeight = SVG_DEFAULTS.fontWeight;
+    this.fontSize = 0;
+
+    this.textMatrix = IDENTITY_MATRIX;
+    this.fontMatrix = FONT_IDENTITY_MATRIX;
+    this.leading = 0;
+
+    // Current point (in user coordinates)
+    this.x = 0;
+    this.y = 0;
+
+    // Start of text line (in text coordinates)
+    this.lineX = 0;
+    this.lineY = 0;
+
+    // Character and word spacing
+    this.charSpacing = 0;
+    this.wordSpacing = 0;
+    this.textHScale = 1;
+    this.textRise = 0;
+
+    // Default foreground and background colors
+    this.fillColor = SVG_DEFAULTS.fillColor;
+    this.strokeColor = '#000000';
+
+    this.fillAlpha = 1;
+    this.strokeAlpha = 1;
+    this.lineWidth = 1;
+    this.lineJoin = '';
+    this.lineCap = '';
+    this.miterLimit = 0;
+
+    this.dashArray = [];
+    this.dashPhase = 0;
+
+    this.dependencies = [];
+
+    // Clipping
+    this.clipId = '';
+    this.pendingClip = false;
+
+    this.maskId = '';
+  }
+
+  SVGExtraState.prototype = {
+    clone: function SVGExtraState_clone() {
+      return Object.create(this);
+    },
+    setCurrentPoint: function SVGExtraState_setCurrentPoint(x, y) {
+      this.x = x;
+      this.y = y;
+    }
+  };
+  return SVGExtraState;
+})();
+
+var SVGGraphics = (function SVGGraphicsClosure() {
+  function createScratchSVG(width, height) {
+    var NS = 'http://www.w3.org/2000/svg';
+    var svg = document.createElementNS(NS, 'svg:svg');
+    svg.setAttributeNS(null, 'version', '1.1');
+    svg.setAttributeNS(null, 'width', width + 'px');
+    svg.setAttributeNS(null, 'height', height + 'px');
+    svg.setAttributeNS(null, 'viewBox', '0 0 ' + width + ' ' + height);
+    return svg;
+  }
+
+  function opListToTree(opList) {
+    var opTree = [];
+    var tmp = [];
+    var opListLen = opList.length;
+
+    for (var x = 0; x < opListLen; x++) {
+      if (opList[x].fn === 'save') {
+        opTree.push({'fnId': 92, 'fn': 'group', 'items': []});
+        tmp.push(opTree);
+        opTree = opTree[opTree.length - 1].items;
+        continue;
+      }
+
+      if(opList[x].fn === 'restore') {
+        opTree = tmp.pop();
+      } else {
+        opTree.push(opList[x]);
+      }
+    }
+    return opTree;
+  }
+
+  /**
+   * Formats float number.
+   * @param value {number} number to format.
+   * @returns {string}
+   */
+  function pf(value) {
+    if (value === (value | 0)) { // integer number
+      return value.toString();
+    }
+    var s = value.toFixed(10);
+    var i = s.length - 1;
+    if (s[i] !== '0') {
+      return s;
+    }
+    // removing trailing zeros
+    do {
+      i--;
+    } while (s[i] === '0');
+    return s.substr(0, s[i] === '.' ? i : i + 1);
+  }
+
+  /**
+   * Formats transform matrix. The standard rotation, scale and translate
+   * matrices are replaced by their shorter forms, and for identity matrix
+   * returns empty string to save the memory.
+   * @param m {Array} matrix to format.
+   * @returns {string}
+   */
+  function pm(m) {
+    if (m[4] === 0 && m[5] === 0) {
+      if (m[1] === 0 && m[2] === 0) {
+        if (m[0] === 1 && m[3] === 1) {
+          return '';
+        }
+        return 'scale(' + pf(m[0]) + ' ' + pf(m[3]) + ')';
+      }
+      if (m[0] === m[3] && m[1] === -m[2]) {
+        var a = Math.acos(m[0]) * 180 / Math.PI;
+        return 'rotate(' + pf(a) + ')';
+      }
+    } else {
+      if (m[0] === 1 && m[1] === 0 && m[2] === 0 && m[3] === 1) {
+        return 'translate(' + pf(m[4]) + ' ' + pf(m[5]) + ')';
+      }
+    }
+    return 'matrix(' + pf(m[0]) + ' ' + pf(m[1]) + ' ' + pf(m[2]) + ' ' +
+      pf(m[3]) + ' ' + pf(m[4]) + ' ' + pf(m[5]) + ')';
+  }
+
+  function SVGGraphics(commonObjs, objs, forceDataSchema) {
+    this.current = new SVGExtraState();
+    this.transformMatrix = IDENTITY_MATRIX; // Graphics state matrix
+    this.transformStack = [];
+    this.extraStack = [];
+    this.commonObjs = commonObjs;
+    this.objs = objs;
+    this.pendingEOFill = false;
+
+    this.embedFonts = false;
+    this.embeddedFonts = Object.create(null);
+    this.cssStyle = null;
+    this.forceDataSchema = !!forceDataSchema;
+  }
+
+  var NS = 'http://www.w3.org/2000/svg';
+  var XML_NS = 'http://www.w3.org/XML/1998/namespace';
+  var XLINK_NS = 'http://www.w3.org/1999/xlink';
+  var LINE_CAP_STYLES = ['butt', 'round', 'square'];
+  var LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];
+  var clipCount = 0;
+  var maskCount = 0;
+
+  SVGGraphics.prototype = {
+    save: function SVGGraphics_save() {
+      this.transformStack.push(this.transformMatrix);
+      var old = this.current;
+      this.extraStack.push(old);
+      this.current = old.clone();
+    },
+
+    restore: function SVGGraphics_restore() {
+      this.transformMatrix = this.transformStack.pop();
+      this.current = this.extraStack.pop();
+
+      this.tgrp = document.createElementNS(NS, 'svg:g');
+      this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+      this.pgrp.appendChild(this.tgrp);
+    },
+
+    group: function SVGGraphics_group(items) {
+      this.save();
+      this.executeOpTree(items);
+      this.restore();
+    },
+
+    loadDependencies: function SVGGraphics_loadDependencies(operatorList) {
+      var fnArray = operatorList.fnArray;
+      var fnArrayLen = fnArray.length;
+      var argsArray = operatorList.argsArray;
+
+      var self = this;
+      for (var i = 0; i < fnArrayLen; i++) {
+        if (OPS.dependency === fnArray[i]) {
+          var deps = argsArray[i];
+          for (var n = 0, nn = deps.length; n < nn; n++) {
+            var obj = deps[n];
+            var common = obj.substring(0, 2) === 'g_';
+            var promise;
+            if (common) {
+              promise = new Promise(function(resolve) {
+                self.commonObjs.get(obj, resolve);
+              });
+            } else {
+              promise = new Promise(function(resolve) {
+                self.objs.get(obj, resolve);
+              });
+            }
+            this.current.dependencies.push(promise);
+          }
+        }
+      }
+      return Promise.all(this.current.dependencies);
+    },
+
+    transform: function SVGGraphics_transform(a, b, c, d, e, f) {
+      var transformMatrix = [a, b, c, d, e, f];
+      this.transformMatrix = Util.transform(this.transformMatrix,
+                                            transformMatrix);
+
+      this.tgrp = document.createElementNS(NS, 'svg:g');
+      this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+    },
+
+    getSVG: function SVGGraphics_getSVG(operatorList, viewport) {
+      this.svg = createScratchSVG(viewport.width, viewport.height);
+      this.viewport = viewport;
+
+      return this.loadDependencies(operatorList).then(function () {
+        this.transformMatrix = IDENTITY_MATRIX;
+        this.pgrp = document.createElementNS(NS, 'svg:g'); // Parent group
+        this.pgrp.setAttributeNS(null, 'transform', pm(viewport.transform));
+        this.tgrp = document.createElementNS(NS, 'svg:g'); // Transform group
+        this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+        this.defs = document.createElementNS(NS, 'svg:defs');
+        this.pgrp.appendChild(this.defs);
+        this.pgrp.appendChild(this.tgrp);
+        this.svg.appendChild(this.pgrp);
+        var opTree = this.convertOpList(operatorList);
+        this.executeOpTree(opTree);
+        return this.svg;
+      }.bind(this));
+    },
+
+    convertOpList: function SVGGraphics_convertOpList(operatorList) {
+      var argsArray = operatorList.argsArray;
+      var fnArray = operatorList.fnArray;
+      var fnArrayLen  = fnArray.length;
+      var REVOPS = [];
+      var opList = [];
+
+      for (var op in OPS) {
+        REVOPS[OPS[op]] = op;
+      }
+
+      for (var x = 0; x < fnArrayLen; x++) {
+        var fnId = fnArray[x];
+        opList.push({'fnId' : fnId, 'fn': REVOPS[fnId], 'args': argsArray[x]});
+      }
+      return opListToTree(opList);
+    },
+
+    executeOpTree: function SVGGraphics_executeOpTree(opTree) {
+      var opTreeLen = opTree.length;
+      for(var x = 0; x < opTreeLen; x++) {
+        var fn = opTree[x].fn;
+        var fnId = opTree[x].fnId;
+        var args = opTree[x].args;
+
+        switch (fnId | 0) {
+          case OPS.beginText:
+            this.beginText();
+            break;
+          case OPS.setLeading:
+            this.setLeading(args);
+            break;
+          case OPS.setLeadingMoveText:
+            this.setLeadingMoveText(args[0], args[1]);
+            break;
+          case OPS.setFont:
+            this.setFont(args);
+            break;
+          case OPS.showText:
+            this.showText(args[0]);
+            break;
+          case OPS.showSpacedText:
+            this.showText(args[0]);
+            break;
+          case OPS.endText:
+            this.endText();
+            break;
+          case OPS.moveText:
+            this.moveText(args[0], args[1]);
+            break;
+          case OPS.setCharSpacing:
+            this.setCharSpacing(args[0]);
+            break;
+          case OPS.setWordSpacing:
+            this.setWordSpacing(args[0]);
+            break;
+          case OPS.setHScale:
+            this.setHScale(args[0]);
+            break;
+          case OPS.setTextMatrix:
+            this.setTextMatrix(args[0], args[1], args[2],
+                               args[3], args[4], args[5]);
+            break;
+          case OPS.setLineWidth:
+            this.setLineWidth(args[0]);
+            break;
+          case OPS.setLineJoin:
+            this.setLineJoin(args[0]);
+            break;
+          case OPS.setLineCap:
+            this.setLineCap(args[0]);
+            break;
+          case OPS.setMiterLimit:
+            this.setMiterLimit(args[0]);
+            break;
+          case OPS.setFillRGBColor:
+            this.setFillRGBColor(args[0], args[1], args[2]);
+            break;
+          case OPS.setStrokeRGBColor:
+            this.setStrokeRGBColor(args[0], args[1], args[2]);
+            break;
+          case OPS.setDash:
+            this.setDash(args[0], args[1]);
+            break;
+          case OPS.setGState:
+            this.setGState(args[0]);
+            break;
+          case OPS.fill:
+            this.fill();
+            break;
+          case OPS.eoFill:
+            this.eoFill();
+            break;
+          case OPS.stroke:
+            this.stroke();
+            break;
+          case OPS.fillStroke:
+            this.fillStroke();
+            break;
+          case OPS.eoFillStroke:
+            this.eoFillStroke();
+            break;
+          case OPS.clip:
+            this.clip('nonzero');
+            break;
+          case OPS.eoClip:
+            this.clip('evenodd');
+            break;
+          case OPS.paintSolidColorImageMask:
+            this.paintSolidColorImageMask();
+            break;
+          case OPS.paintJpegXObject:
+            this.paintJpegXObject(args[0], args[1], args[2]);
+            break;
+          case OPS.paintImageXObject:
+            this.paintImageXObject(args[0]);
+            break;
+          case OPS.paintInlineImageXObject:
+            this.paintInlineImageXObject(args[0]);
+            break;
+          case OPS.paintImageMaskXObject:
+            this.paintImageMaskXObject(args[0]);
+            break;
+          case OPS.paintFormXObjectBegin:
+            this.paintFormXObjectBegin(args[0], args[1]);
+            break;
+          case OPS.paintFormXObjectEnd:
+            this.paintFormXObjectEnd();
+            break;
+          case OPS.closePath:
+            this.closePath();
+            break;
+          case OPS.closeStroke:
+            this.closeStroke();
+            break;
+          case OPS.closeFillStroke:
+            this.closeFillStroke();
+            break;
+          case OPS.nextLine:
+            this.nextLine();
+            break;
+          case OPS.transform:
+            this.transform(args[0], args[1], args[2], args[3],
+                           args[4], args[5]);
+            break;
+          case OPS.constructPath:
+            this.constructPath(args[0], args[1]);
+            break;
+          case OPS.endPath:
+            this.endPath();
+            break;
+          case 92:
+            this.group(opTree[x].items);
+            break;
+          default:
+            warn('Unimplemented method '+ fn);
+            break;
+        }
+      }
+    },
+
+    setWordSpacing: function SVGGraphics_setWordSpacing(wordSpacing) {
+      this.current.wordSpacing = wordSpacing;
+    },
+
+    setCharSpacing: function SVGGraphics_setCharSpacing(charSpacing) {
+      this.current.charSpacing = charSpacing;
+    },
+
+    nextLine: function SVGGraphics_nextLine() {
+      this.moveText(0, this.current.leading);
+    },
+
+    setTextMatrix: function SVGGraphics_setTextMatrix(a, b, c, d, e, f) {
+      var current = this.current;
+      this.current.textMatrix = this.current.lineMatrix = [a, b, c, d, e, f];
+
+      this.current.x = this.current.lineX = 0;
+      this.current.y = this.current.lineY = 0;
+
+      current.xcoords = [];
+      current.tspan = document.createElementNS(NS, 'svg:tspan');
+      current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
+      current.tspan.setAttributeNS(null, 'font-size',
+                                   pf(current.fontSize) + 'px');
+      current.tspan.setAttributeNS(null, 'y', pf(-current.y));
+
+      current.txtElement = document.createElementNS(NS, 'svg:text');
+      current.txtElement.appendChild(current.tspan);
+    },
+
+    beginText: function SVGGraphics_beginText() {
+      this.current.x = this.current.lineX = 0;
+      this.current.y = this.current.lineY = 0;
+      this.current.textMatrix = IDENTITY_MATRIX;
+      this.current.lineMatrix = IDENTITY_MATRIX;
+      this.current.tspan = document.createElementNS(NS, 'svg:tspan');
+      this.current.txtElement = document.createElementNS(NS, 'svg:text');
+      this.current.txtgrp = document.createElementNS(NS, 'svg:g');
+      this.current.xcoords = [];
+    },
+
+    moveText: function SVGGraphics_moveText(x, y) {
+      var current = this.current;
+      this.current.x = this.current.lineX += x;
+      this.current.y = this.current.lineY += y;
+
+      current.xcoords = [];
+      current.tspan = document.createElementNS(NS, 'svg:tspan');
+      current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
+      current.tspan.setAttributeNS(null, 'font-size',
+                                   pf(current.fontSize) + 'px');
+      current.tspan.setAttributeNS(null, 'y', pf(-current.y));
+    },
+
+    showText: function SVGGraphics_showText(glyphs) {
+      var current = this.current;
+      var font = current.font;
+      var fontSize = current.fontSize;
+
+      if (fontSize === 0) {
+        return;
+      }
+
+      var charSpacing = current.charSpacing;
+      var wordSpacing = current.wordSpacing;
+      var fontDirection = current.fontDirection;
+      var textHScale = current.textHScale * fontDirection;
+      var glyphsLength = glyphs.length;
+      var vertical = font.vertical;
+      var widthAdvanceScale = fontSize * current.fontMatrix[0];
+
+      var x = 0, i;
+      for (i = 0; i < glyphsLength; ++i) {
+        var glyph = glyphs[i];
+        if (glyph === null) {
+          // word break
+          x += fontDirection * wordSpacing;
+          continue;
+        } else if (isNum(glyph)) {
+          x += -glyph * fontSize * 0.001;
+          continue;
+        }
+        current.xcoords.push(current.x + x * textHScale);
+
+        var width = glyph.width;
+        var character = glyph.fontChar;
+        var charWidth = width * widthAdvanceScale + charSpacing * fontDirection;
+        x += charWidth;
+
+        current.tspan.textContent += character;
+      }
+      if (vertical) {
+        current.y -= x * textHScale;
+      } else {
+        current.x += x * textHScale;
+      }
+
+      current.tspan.setAttributeNS(null, 'x',
+                                   current.xcoords.map(pf).join(' '));
+      current.tspan.setAttributeNS(null, 'y', pf(-current.y));
+      current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
+      current.tspan.setAttributeNS(null, 'font-size',
+                                   pf(current.fontSize) + 'px');
+      if (current.fontStyle !== SVG_DEFAULTS.fontStyle) {
+        current.tspan.setAttributeNS(null, 'font-style', current.fontStyle);
+      }
+      if (current.fontWeight !== SVG_DEFAULTS.fontWeight) {
+        current.tspan.setAttributeNS(null, 'font-weight', current.fontWeight);
+      }
+      if (current.fillColor !== SVG_DEFAULTS.fillColor) {
+        current.tspan.setAttributeNS(null, 'fill', current.fillColor);
+      }
+
+      current.txtElement.setAttributeNS(null, 'transform',
+                                        pm(current.textMatrix) +
+                                        ' scale(1, -1)' );
+      current.txtElement.setAttributeNS(XML_NS, 'xml:space', 'preserve');
+      current.txtElement.appendChild(current.tspan);
+      current.txtgrp.appendChild(current.txtElement);
+
+      this.tgrp.appendChild(current.txtElement);
+
+    },
+
+    setLeadingMoveText: function SVGGraphics_setLeadingMoveText(x, y) {
+      this.setLeading(-y);
+      this.moveText(x, y);
+    },
+
+    addFontStyle: function SVGGraphics_addFontStyle(fontObj) {
+      if (!this.cssStyle) {
+        this.cssStyle = document.createElementNS(NS, 'svg:style');
+        this.cssStyle.setAttributeNS(null, 'type', 'text/css');
+        this.defs.appendChild(this.cssStyle);
+      }
+
+      var url = createObjectURL(fontObj.data, fontObj.mimetype,
+                                this.forceDataSchema);
+      this.cssStyle.textContent +=
+        '@font-face { font-family: "' + fontObj.loadedName + '";' +
+        ' src: url(' + url + '); }\n';
+    },
+
+    setFont: function SVGGraphics_setFont(details) {
+      var current = this.current;
+      var fontObj = this.commonObjs.get(details[0]);
+      var size = details[1];
+      this.current.font = fontObj;
+
+      if (this.embedFonts && fontObj.data &&
+          !this.embeddedFonts[fontObj.loadedName]) {
+        this.addFontStyle(fontObj);
+        this.embeddedFonts[fontObj.loadedName] = fontObj;
+      }
+
+      current.fontMatrix = (fontObj.fontMatrix ?
+                            fontObj.fontMatrix : FONT_IDENTITY_MATRIX);
+
+      var bold = fontObj.black ? (fontObj.bold ? 'bolder' : 'bold') :
+                                 (fontObj.bold ? 'bold' : 'normal');
+      var italic = fontObj.italic ? 'italic' : 'normal';
+
+      if (size < 0) {
+        size = -size;
+        current.fontDirection = -1;
+      } else {
+        current.fontDirection = 1;
+      }
+      current.fontSize = size;
+      current.fontFamily = fontObj.loadedName;
+      current.fontWeight = bold;
+      current.fontStyle = italic;
+
+      current.tspan = document.createElementNS(NS, 'svg:tspan');
+      current.tspan.setAttributeNS(null, 'y', pf(-current.y));
+      current.xcoords = [];
+    },
+
+    endText: function SVGGraphics_endText() {
+      if (this.current.pendingClip) {
+        this.cgrp.appendChild(this.tgrp);
+        this.pgrp.appendChild(this.cgrp);
+      } else {
+        this.pgrp.appendChild(this.tgrp);
+      }
+      this.tgrp = document.createElementNS(NS, 'svg:g');
+      this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+    },
+
+    // Path properties
+    setLineWidth: function SVGGraphics_setLineWidth(width) {
+      this.current.lineWidth = width;
+    },
+    setLineCap: function SVGGraphics_setLineCap(style) {
+      this.current.lineCap = LINE_CAP_STYLES[style];
+    },
+    setLineJoin: function SVGGraphics_setLineJoin(style) {
+      this.current.lineJoin = LINE_JOIN_STYLES[style];
+    },
+    setMiterLimit: function SVGGraphics_setMiterLimit(limit) {
+      this.current.miterLimit = limit;
+    },
+    setStrokeRGBColor: function SVGGraphics_setStrokeRGBColor(r, g, b) {
+      var color = Util.makeCssRgb(r, g, b);
+      this.current.strokeColor = color;
+    },
+    setFillRGBColor: function SVGGraphics_setFillRGBColor(r, g, b) {
+      var color = Util.makeCssRgb(r, g, b);
+      this.current.fillColor = color;
+      this.current.tspan = document.createElementNS(NS, 'svg:tspan');
+      this.current.xcoords = [];
+    },
+    setDash: function SVGGraphics_setDash(dashArray, dashPhase) {
+      this.current.dashArray = dashArray;
+      this.current.dashPhase = dashPhase;
+    },
+
+    constructPath: function SVGGraphics_constructPath(ops, args) {
+      var current = this.current;
+      var x = current.x, y = current.y;
+      current.path = document.createElementNS(NS, 'svg:path');
+      var d = [];
+      var opLength = ops.length;
+
+      for (var i = 0, j = 0; i < opLength; i++) {
+        switch (ops[i] | 0) {
+          case OPS.rectangle:
+            x = args[j++];
+            y = args[j++];
+            var width = args[j++];
+            var height = args[j++];
+            var xw = x + width;
+            var yh = y + height;
+            d.push('M', pf(x), pf(y), 'L', pf(xw) , pf(y), 'L', pf(xw), pf(yh),
+                   'L', pf(x), pf(yh), 'Z');
+            break;
+          case OPS.moveTo:
+            x = args[j++];
+            y = args[j++];
+            d.push('M', pf(x), pf(y));
+            break;
+          case OPS.lineTo:
+            x = args[j++];
+            y = args[j++];
+            d.push('L', pf(x) , pf(y));
+            break;
+          case OPS.curveTo:
+            x = args[j + 4];
+            y = args[j + 5];
+            d.push('C', pf(args[j]), pf(args[j + 1]), pf(args[j + 2]),
+                   pf(args[j + 3]), pf(x), pf(y));
+            j += 6;
+            break;
+          case OPS.curveTo2:
+            x = args[j + 2];
+            y = args[j + 3];
+            d.push('C', pf(x), pf(y), pf(args[j]), pf(args[j + 1]),
+                   pf(args[j + 2]), pf(args[j + 3]));
+            j += 4;
+            break;
+          case OPS.curveTo3:
+            x = args[j + 2];
+            y = args[j + 3];
+            d.push('C', pf(args[j]), pf(args[j + 1]), pf(x), pf(y),
+                   pf(x), pf(y));
+            j += 4;
+            break;
+          case OPS.closePath:
+            d.push('Z');
+            break;
+        }
+      }
+      current.path.setAttributeNS(null, 'd', d.join(' '));
+      current.path.setAttributeNS(null, 'stroke-miterlimit',
+                                  pf(current.miterLimit));
+      current.path.setAttributeNS(null, 'stroke-linecap', current.lineCap);
+      current.path.setAttributeNS(null, 'stroke-linejoin', current.lineJoin);
+      current.path.setAttributeNS(null, 'stroke-width',
+                                  pf(current.lineWidth) + 'px');
+      current.path.setAttributeNS(null, 'stroke-dasharray',
+                                  current.dashArray.map(pf).join(' '));
+      current.path.setAttributeNS(null, 'stroke-dashoffset',
+                                  pf(current.dashPhase) + 'px');
+      current.path.setAttributeNS(null, 'fill', 'none');
+
+      this.tgrp.appendChild(current.path);
+      if (current.pendingClip) {
+        this.cgrp.appendChild(this.tgrp);
+        this.pgrp.appendChild(this.cgrp);
+      } else {
+        this.pgrp.appendChild(this.tgrp);
+      }
+      // Saving a reference in current.element so that it can be addressed
+      // in 'fill' and 'stroke'
+      current.element = current.path;
+      current.setCurrentPoint(x, y);
+    },
+
+    endPath: function SVGGraphics_endPath() {
+      var current = this.current;
+      if (current.pendingClip) {
+        this.cgrp.appendChild(this.tgrp);
+        this.pgrp.appendChild(this.cgrp);
+      } else {
+        this.pgrp.appendChild(this.tgrp);
+      }
+      this.tgrp = document.createElementNS(NS, 'svg:g');
+      this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+    },
+
+    clip: function SVGGraphics_clip(type) {
+      var current = this.current;
+      // Add current path to clipping path
+      current.clipId = 'clippath' + clipCount;
+      clipCount++;
+      this.clippath = document.createElementNS(NS, 'svg:clipPath');
+      this.clippath.setAttributeNS(null, 'id', current.clipId);
+      var clipElement = current.element.cloneNode();
+      if (type === 'evenodd') {
+        clipElement.setAttributeNS(null, 'clip-rule', 'evenodd');
+      } else {
+        clipElement.setAttributeNS(null, 'clip-rule', 'nonzero');
+      }
+      this.clippath.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+      this.clippath.appendChild(clipElement);
+      this.defs.appendChild(this.clippath);
+
+      // Create a new group with that attribute
+      current.pendingClip = true;
+      this.cgrp = document.createElementNS(NS, 'svg:g');
+      this.cgrp.setAttributeNS(null, 'clip-path',
+                               'url(#' + current.clipId + ')');
+      this.pgrp.appendChild(this.cgrp);
+    },
+
+    closePath: function SVGGraphics_closePath() {
+      var current = this.current;
+      var d = current.path.getAttributeNS(null, 'd');
+      d += 'Z';
+      current.path.setAttributeNS(null, 'd', d);
+    },
+
+    setLeading: function SVGGraphics_setLeading(leading) {
+      this.current.leading = -leading;
+    },
+
+    setTextRise: function SVGGraphics_setTextRise(textRise) {
+      this.current.textRise = textRise;
+    },
+
+    setHScale: function SVGGraphics_setHScale(scale) {
+      this.current.textHScale = scale / 100;
+    },
+
+    setGState: function SVGGraphics_setGState(states) {
+      for (var i = 0, ii = states.length; i < ii; i++) {
+        var state = states[i];
+        var key = state[0];
+        var value = state[1];
+
+        switch (key) {
+          case 'LW':
+            this.setLineWidth(value);
+            break;
+          case 'LC':
+            this.setLineCap(value);
+            break;
+          case 'LJ':
+            this.setLineJoin(value);
+            break;
+          case 'ML':
+            this.setMiterLimit(value);
+            break;
+          case 'D':
+            this.setDash(value[0], value[1]);
+            break;
+          case 'RI':
+            break;
+          case 'FL':
+            break;
+          case 'Font':
+            this.setFont(value);
+            break;
+          case 'CA':
+            break;
+          case 'ca':
+            break;
+          case 'BM':
+            break;
+          case 'SMask':
+            break;
+        }
+      }
+    },
+
+    fill: function SVGGraphics_fill() {
+      var current = this.current;
+      current.element.setAttributeNS(null, 'fill', current.fillColor);
+    },
+
+    stroke: function SVGGraphics_stroke() {
+      var current = this.current;
+      current.element.setAttributeNS(null, 'stroke', current.strokeColor);
+      current.element.setAttributeNS(null, 'fill', 'none');
+    },
+
+    eoFill: function SVGGraphics_eoFill() {
+      var current = this.current;
+      current.element.setAttributeNS(null, 'fill', current.fillColor);
+      current.element.setAttributeNS(null, 'fill-rule', 'evenodd');
+    },
+
+    fillStroke: function SVGGraphics_fillStroke() {
+      // Order is important since stroke wants fill to be none.
+      // First stroke, then if fill needed, it will be overwritten.
+      this.stroke();
+      this.fill();
+    },
+
+    eoFillStroke: function SVGGraphics_eoFillStroke() {
+      this.current.element.setAttributeNS(null, 'fill-rule', 'evenodd');
+      this.fillStroke();
+    },
+
+    closeStroke: function SVGGraphics_closeStroke() {
+      this.closePath();
+      this.stroke();
+    },
+
+    closeFillStroke: function SVGGraphics_closeFillStroke() {
+      this.closePath();
+      this.fillStroke();
+    },
+
+    paintSolidColorImageMask:
+        function SVGGraphics_paintSolidColorImageMask() {
+      var current = this.current;
+      var rect = document.createElementNS(NS, 'svg:rect');
+      rect.setAttributeNS(null, 'x', '0');
+      rect.setAttributeNS(null, 'y', '0');
+      rect.setAttributeNS(null, 'width', '1px');
+      rect.setAttributeNS(null, 'height', '1px');
+      rect.setAttributeNS(null, 'fill', current.fillColor);
+      this.tgrp.appendChild(rect);
+    },
+
+    paintJpegXObject: function SVGGraphics_paintJpegXObject(objId, w, h) {
+      var current = this.current;
+      var imgObj = this.objs.get(objId);
+      var imgEl = document.createElementNS(NS, 'svg:image');
+      imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgObj.src);
+      imgEl.setAttributeNS(null, 'width', imgObj.width + 'px');
+      imgEl.setAttributeNS(null, 'height', imgObj.height + 'px');
+      imgEl.setAttributeNS(null, 'x', '0');
+      imgEl.setAttributeNS(null, 'y', pf(-h));
+      imgEl.setAttributeNS(null, 'transform',
+                           'scale(' + pf(1 / w) + ' ' + pf(-1 / h) + ')');
+
+      this.tgrp.appendChild(imgEl);
+      if (current.pendingClip) {
+        this.cgrp.appendChild(this.tgrp);
+        this.pgrp.appendChild(this.cgrp);
+      } else {
+        this.pgrp.appendChild(this.tgrp);
+      }
+    },
+
+    paintImageXObject: function SVGGraphics_paintImageXObject(objId) {
+      var imgData = this.objs.get(objId);
+      if (!imgData) {
+        warn('Dependent image isn\'t ready yet');
+        return;
+      }
+      this.paintInlineImageXObject(imgData);
+    },
+
+    paintInlineImageXObject:
+        function SVGGraphics_paintInlineImageXObject(imgData, mask) {
+      var current = this.current;
+      var width = imgData.width;
+      var height = imgData.height;
+
+      var imgSrc = convertImgDataToPng(imgData, this.forceDataSchema);
+      var cliprect = document.createElementNS(NS, 'svg:rect');
+      cliprect.setAttributeNS(null, 'x', '0');
+      cliprect.setAttributeNS(null, 'y', '0');
+      cliprect.setAttributeNS(null, 'width', pf(width));
+      cliprect.setAttributeNS(null, 'height', pf(height));
+      current.element = cliprect;
+      this.clip('nonzero');
+      var imgEl = document.createElementNS(NS, 'svg:image');
+      imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgSrc);
+      imgEl.setAttributeNS(null, 'x', '0');
+      imgEl.setAttributeNS(null, 'y', pf(-height));
+      imgEl.setAttributeNS(null, 'width', pf(width) + 'px');
+      imgEl.setAttributeNS(null, 'height', pf(height) + 'px');
+      imgEl.setAttributeNS(null, 'transform',
+                           'scale(' + pf(1 / width) + ' ' +
+                           pf(-1 / height) + ')');
+      if (mask) {
+        mask.appendChild(imgEl);
+      } else {
+        this.tgrp.appendChild(imgEl);
+      }
+      if (current.pendingClip) {
+        this.cgrp.appendChild(this.tgrp);
+        this.pgrp.appendChild(this.cgrp);
+      } else {
+        this.pgrp.appendChild(this.tgrp);
+      }
+    },
+
+    paintImageMaskXObject:
+        function SVGGraphics_paintImageMaskXObject(imgData) {
+      var current = this.current;
+      var width = imgData.width;
+      var height = imgData.height;
+      var fillColor = current.fillColor;
+
+      current.maskId = 'mask' + maskCount++;
+      var mask = document.createElementNS(NS, 'svg:mask');
+      mask.setAttributeNS(null, 'id', current.maskId);
+
+      var rect = document.createElementNS(NS, 'svg:rect');
+      rect.setAttributeNS(null, 'x', '0');
+      rect.setAttributeNS(null, 'y', '0');
+      rect.setAttributeNS(null, 'width', pf(width));
+      rect.setAttributeNS(null, 'height', pf(height));
+      rect.setAttributeNS(null, 'fill', fillColor);
+      rect.setAttributeNS(null, 'mask', 'url(#' + current.maskId +')');
+      this.defs.appendChild(mask);
+      this.tgrp.appendChild(rect);
+
+      this.paintInlineImageXObject(imgData, mask);
+    },
+
+    paintFormXObjectBegin:
+        function SVGGraphics_paintFormXObjectBegin(matrix, bbox) {
+      this.save();
+
+      if (isArray(matrix) && matrix.length === 6) {
+        this.transform(matrix[0], matrix[1], matrix[2],
+                       matrix[3], matrix[4], matrix[5]);
+      }
+
+      if (isArray(bbox) && bbox.length === 4) {
+        var width = bbox[2] - bbox[0];
+        var height = bbox[3] - bbox[1];
+
+        var cliprect = document.createElementNS(NS, 'svg:rect');
+        cliprect.setAttributeNS(null, 'x', bbox[0]);
+        cliprect.setAttributeNS(null, 'y', bbox[1]);
+        cliprect.setAttributeNS(null, 'width', pf(width));
+        cliprect.setAttributeNS(null, 'height', pf(height));
+        this.current.element = cliprect;
+        this.clip('nonzero');
+        this.endPath();
+      }
+    },
+
+    paintFormXObjectEnd:
+        function SVGGraphics_paintFormXObjectEnd() {
+      this.restore();
+    }
+  };
+  return SVGGraphics;
+})();
+
+exports.SVGGraphics = SVGGraphics;
+}));
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsDisplayAnnotationLayer = {}), root.pdfjsSharedUtil,
+      root.pdfjsDisplayDOMUtils);
+  }
+}(this, function (exports, sharedUtil, displayDOMUtils) {
+
+var AnnotationBorderStyleType = sharedUtil.AnnotationBorderStyleType;
+var AnnotationType = sharedUtil.AnnotationType;
+var Util = sharedUtil.Util;
+var addLinkAttributes = displayDOMUtils.addLinkAttributes;
+var LinkTarget = displayDOMUtils.LinkTarget;
+var getFilenameFromUrl = displayDOMUtils.getFilenameFromUrl;
+var warn = sharedUtil.warn;
+var CustomStyle = displayDOMUtils.CustomStyle;
+var getDefaultSetting = displayDOMUtils.getDefaultSetting;
+
+/**
+ * @typedef {Object} AnnotationElementParameters
+ * @property {Object} data
+ * @property {HTMLDivElement} layer
+ * @property {PDFPage} page
+ * @property {PageViewport} viewport
+ * @property {IPDFLinkService} linkService
+ * @property {DownloadManager} downloadManager
+ */
+
+/**
+ * @class
+ * @alias AnnotationElementFactory
+ */
+function AnnotationElementFactory() {}
+AnnotationElementFactory.prototype =
+    /** @lends AnnotationElementFactory.prototype */ {
+  /**
+   * @param {AnnotationElementParameters} parameters
+   * @returns {AnnotationElement}
+   */
+  create: function AnnotationElementFactory_create(parameters) {
+    var subtype = parameters.data.annotationType;
+
+    switch (subtype) {
+      case AnnotationType.LINK:
+        return new LinkAnnotationElement(parameters);
+
+      case AnnotationType.TEXT:
+        return new TextAnnotationElement(parameters);
+
+      case AnnotationType.WIDGET:
+        return new WidgetAnnotationElement(parameters);
+
+      case AnnotationType.POPUP:
+        return new PopupAnnotationElement(parameters);
+
+      case AnnotationType.HIGHLIGHT:
+        return new HighlightAnnotationElement(parameters);
+
+      case AnnotationType.UNDERLINE:
+        return new UnderlineAnnotationElement(parameters);
+
+      case AnnotationType.SQUIGGLY:
+        return new SquigglyAnnotationElement(parameters);
+
+      case AnnotationType.STRIKEOUT:
+        return new StrikeOutAnnotationElement(parameters);
+
+      case AnnotationType.FILEATTACHMENT:
+        return new FileAttachmentAnnotationElement(parameters);
+
+      default:
+        return new AnnotationElement(parameters);
+    }
+  }
+};
+
+/**
+ * @class
+ * @alias AnnotationElement
+ */
+var AnnotationElement = (function AnnotationElementClosure() {
+  function AnnotationElement(parameters, isRenderable) {
+    this.isRenderable = isRenderable || false;
+    this.data = parameters.data;
+    this.layer = parameters.layer;
+    this.page = parameters.page;
+    this.viewport = parameters.viewport;
+    this.linkService = parameters.linkService;
+    this.downloadManager = parameters.downloadManager;
+    this.imageResourcesPath = parameters.imageResourcesPath;
+
+    if (isRenderable) {
+      this.container = this._createContainer();
+    }
+  }
+
+  AnnotationElement.prototype = /** @lends AnnotationElement.prototype */ {
+    /**
+     * Create an empty container for the annotation's HTML element.
+     *
+     * @private
+     * @memberof AnnotationElement
+     * @returns {HTMLSectionElement}
+     */
+    _createContainer: function AnnotationElement_createContainer() {
+      var data = this.data, page = this.page, viewport = this.viewport;
+      var container = document.createElement('section');
+      var width = data.rect[2] - data.rect[0];
+      var height = data.rect[3] - data.rect[1];
+
+      container.setAttribute('data-annotation-id', data.id);
+
+      // Do *not* modify `data.rect`, since that will corrupt the annotation
+      // position on subsequent calls to `_createContainer` (see issue 6804).
+      var rect = Util.normalizeRect([
+        data.rect[0],
+        page.view[3] - data.rect[1] + page.view[1],
+        data.rect[2],
+        page.view[3] - data.rect[3] + page.view[1]
+      ]);
+
+      CustomStyle.setProp('transform', container,
+                          'matrix(' + viewport.transform.join(',') + ')');
+      CustomStyle.setProp('transformOrigin', container,
+                          -rect[0] + 'px ' + -rect[1] + 'px');
+
+      if (data.borderStyle.width > 0) {
+        container.style.borderWidth = data.borderStyle.width + 'px';
+        if (data.borderStyle.style !== AnnotationBorderStyleType.UNDERLINE) {
+          // Underline styles only have a bottom border, so we do not need
+          // to adjust for all borders. This yields a similar result as
+          // Adobe Acrobat/Reader.
+          width = width - 2 * data.borderStyle.width;
+          height = height - 2 * data.borderStyle.width;
+        }
+
+        var horizontalRadius = data.borderStyle.horizontalCornerRadius;
+        var verticalRadius = data.borderStyle.verticalCornerRadius;
+        if (horizontalRadius > 0 || verticalRadius > 0) {
+          var radius = horizontalRadius + 'px / ' + verticalRadius + 'px';
+          CustomStyle.setProp('borderRadius', container, radius);
+        }
+
+        switch (data.borderStyle.style) {
+          case AnnotationBorderStyleType.SOLID:
+            container.style.borderStyle = 'solid';
+            break;
+
+          case AnnotationBorderStyleType.DASHED:
+            container.style.borderStyle = 'dashed';
+            break;
+
+          case AnnotationBorderStyleType.BEVELED:
+            warn('Unimplemented border style: beveled');
+            break;
+
+          case AnnotationBorderStyleType.INSET:
+            warn('Unimplemented border style: inset');
+            break;
+
+          case AnnotationBorderStyleType.UNDERLINE:
+            container.style.borderBottomStyle = 'solid';
+            break;
+
+          default:
+            break;
+        }
+
+        if (data.color) {
+          container.style.borderColor =
+            Util.makeCssRgb(data.color[0] | 0,
+                            data.color[1] | 0,
+                            data.color[2] | 0);
+        } else {
+          // Transparent (invisible) border, so do not draw it at all.
+          container.style.borderWidth = 0;
+        }
+      }
+
+      container.style.left = rect[0] + 'px';
+      container.style.top = rect[1] + 'px';
+
+      container.style.width = width + 'px';
+      container.style.height = height + 'px';
+
+      return container;
+    },
+
+    /**
+     * Create a popup for the annotation's HTML element. This is used for
+     * annotations that do not have a Popup entry in the dictionary, but
+     * are of a type that works with popups (such as Highlight annotations).
+     *
+     * @private
+     * @param {HTMLSectionElement} container
+     * @param {HTMLDivElement|HTMLImageElement|null} trigger
+     * @param {Object} data
+     * @memberof AnnotationElement
+     */
+    _createPopup:
+        function AnnotationElement_createPopup(container, trigger, data) {
+      // If no trigger element is specified, create it.
+      if (!trigger) {
+        trigger = document.createElement('div');
+        trigger.style.height = container.style.height;
+        trigger.style.width = container.style.width;
+        container.appendChild(trigger);
+      }
+
+      var popupElement = new PopupElement({
+        container: container,
+        trigger: trigger,
+        color: data.color,
+        title: data.title,
+        contents: data.contents,
+        hideWrapper: true
+      });
+      var popup = popupElement.render();
+
+      // Position the popup next to the annotation's container.
+      popup.style.left = container.style.width;
+
+      container.appendChild(popup);
+    },
+
+    /**
+     * Render the annotation's HTML element in the empty container.
+     *
+     * @public
+     * @memberof AnnotationElement
+     */
+    render: function AnnotationElement_render() {
+      throw new Error('Abstract method AnnotationElement.render called');
+    }
+  };
+
+  return AnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias LinkAnnotationElement
+ */
+var LinkAnnotationElement = (function LinkAnnotationElementClosure() {
+  function LinkAnnotationElement(parameters) {
+    AnnotationElement.call(this, parameters, true);
+  }
+
+  Util.inherit(LinkAnnotationElement, AnnotationElement, {
+    /**
+     * Render the link annotation's HTML element in the empty container.
+     *
+     * @public
+     * @memberof LinkAnnotationElement
+     * @returns {HTMLSectionElement}
+     */
+    render: function LinkAnnotationElement_render() {
+      this.container.className = 'linkAnnotation';
+
+      var link = document.createElement('a');
+      addLinkAttributes(link, {
+        url: this.data.url,
+        target: (this.data.newWindow ? LinkTarget.BLANK : undefined),
+      });
+
+      if (!this.data.url) {
+        if (this.data.action) {
+          this._bindNamedAction(link, this.data.action);
+        } else {
+          this._bindLink(link, (this.data.dest || null));
+        }
+      }
+
+      this.container.appendChild(link);
+      return this.container;
+    },
+
+    /**
+     * Bind internal links to the link element.
+     *
+     * @private
+     * @param {Object} link
+     * @param {Object} destination
+     * @memberof LinkAnnotationElement
+     */
+    _bindLink: function LinkAnnotationElement_bindLink(link, destination) {
+      var self = this;
+
+      link.href = this.linkService.getDestinationHash(destination);
+      link.onclick = function() {
+        if (destination) {
+          self.linkService.navigateTo(destination);
+        }
+        return false;
+      };
+      if (destination) {
+        link.className = 'internalLink';
+      }
+    },
+
+    /**
+     * Bind named actions to the link element.
+     *
+     * @private
+     * @param {Object} link
+     * @param {Object} action
+     * @memberof LinkAnnotationElement
+     */
+    _bindNamedAction:
+        function LinkAnnotationElement_bindNamedAction(link, action) {
+      var self = this;
+
+      link.href = this.linkService.getAnchorUrl('');
+      link.onclick = function() {
+        self.linkService.executeNamedAction(action);
+        return false;
+      };
+      link.className = 'internalLink';
+    }
+  });
+
+  return LinkAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias TextAnnotationElement
+ */
+var TextAnnotationElement = (function TextAnnotationElementClosure() {
+  function TextAnnotationElement(parameters) {
+    var isRenderable = !!(parameters.data.hasPopup ||
+                          parameters.data.title || parameters.data.contents);
+    AnnotationElement.call(this, parameters, isRenderable);
+  }
+
+  Util.inherit(TextAnnotationElement, AnnotationElement, {
+    /**
+     * Render the text annotation's HTML element in the empty container.
+     *
+     * @public
+     * @memberof TextAnnotationElement
+     * @returns {HTMLSectionElement}
+     */
+    render: function TextAnnotationElement_render() {
+      this.container.className = 'textAnnotation';
+
+      var image = document.createElement('img');
+      image.style.height = this.container.style.height;
+      image.style.width = this.container.style.width;
+      image.src = this.imageResourcesPath + 'annotation-' +
+        this.data.name.toLowerCase() + '.svg';
+      image.alt = '[{{type}} Annotation]';
+      image.dataset.l10nId = 'text_annotation_type';
+      image.dataset.l10nArgs = JSON.stringify({type: this.data.name});
+
+      if (!this.data.hasPopup) {
+        this._createPopup(this.container, image, this.data);
+      }
+
+      this.container.appendChild(image);
+      return this.container;
+    }
+  });
+
+  return TextAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias WidgetAnnotationElement
+ */
+var WidgetAnnotationElement = (function WidgetAnnotationElementClosure() {
+  function WidgetAnnotationElement(parameters) {
+    var isRenderable = !parameters.data.hasAppearance &&
+                       !!parameters.data.fieldValue;
+    AnnotationElement.call(this, parameters, isRenderable);
+  }
+
+  Util.inherit(WidgetAnnotationElement, AnnotationElement, {
+    /**
+     * Render the widget annotation's HTML element in the empty container.
+     *
+     * @public
+     * @memberof WidgetAnnotationElement
+     * @returns {HTMLSectionElement}
+     */
+    render: function WidgetAnnotationElement_render() {
+      var content = document.createElement('div');
+      content.textContent = this.data.fieldValue;
+      var textAlignment = this.data.textAlignment;
+      content.style.textAlign = ['left', 'center', 'right'][textAlignment];
+      content.style.verticalAlign = 'middle';
+      content.style.display = 'table-cell';
+
+      var font = (this.data.fontRefName ?
+        this.page.commonObjs.getData(this.data.fontRefName) : null);
+      this._setTextStyle(content, font);
+
+      this.container.appendChild(content);
+      return this.container;
+    },
+
+    /**
+     * Apply text styles to the text in the element.
+     *
+     * @private
+     * @param {HTMLDivElement} element
+     * @param {Object} font
+     * @memberof WidgetAnnotationElement
+     */
+    _setTextStyle:
+        function WidgetAnnotationElement_setTextStyle(element, font) {
+      // TODO: This duplicates some of the logic in CanvasGraphics.setFont().
+      var style = element.style;
+      style.fontSize = this.data.fontSize + 'px';
+      style.direction = (this.data.fontDirection < 0 ? 'rtl': 'ltr');
+
+      if (!font) {
+        return;
+      }
+
+      style.fontWeight = (font.black ?
+        (font.bold ? '900' : 'bold') :
+        (font.bold ? 'bold' : 'normal'));
+      style.fontStyle = (font.italic ? 'italic' : 'normal');
+
+      // Use a reasonable default font if the font doesn't specify a fallback.
+      var fontFamily = font.loadedName ? '"' + font.loadedName + '", ' : '';
+      var fallbackName = font.fallbackName || 'Helvetica, sans-serif';
+      style.fontFamily = fontFamily + fallbackName;
+    }
+  });
+
+  return WidgetAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias PopupAnnotationElement
+ */
+var PopupAnnotationElement = (function PopupAnnotationElementClosure() {
+  function PopupAnnotationElement(parameters) {
+    var isRenderable = !!(parameters.data.title || parameters.data.contents);
+    AnnotationElement.call(this, parameters, isRenderable);
+  }
+
+  Util.inherit(PopupAnnotationElement, AnnotationElement, {
+    /**
+     * Render the popup annotation's HTML element in the empty container.
+     *
+     * @public
+     * @memberof PopupAnnotationElement
+     * @returns {HTMLSectionElement}
+     */
+    render: function PopupAnnotationElement_render() {
+      this.container.className = 'popupAnnotation';
+
+      var selector = '[data-annotation-id="' + this.data.parentId + '"]';
+      var parentElement = this.layer.querySelector(selector);
+      if (!parentElement) {
+        return this.container;
+      }
+
+      var popup = new PopupElement({
+        container: this.container,
+        trigger: parentElement,
+        color: this.data.color,
+        title: this.data.title,
+        contents: this.data.contents
+      });
+
+      // Position the popup next to the parent annotation's container.
+      // PDF viewers ignore a popup annotation's rectangle.
+      var parentLeft = parseFloat(parentElement.style.left);
+      var parentWidth = parseFloat(parentElement.style.width);
+      CustomStyle.setProp('transformOrigin', this.container,
+                          -(parentLeft + parentWidth) + 'px -' +
+                          parentElement.style.top);
+      this.container.style.left = (parentLeft + parentWidth) + 'px';
+
+      this.container.appendChild(popup.render());
+      return this.container;
+    }
+  });
+
+  return PopupAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias PopupElement
+ */
+var PopupElement = (function PopupElementClosure() {
+  var BACKGROUND_ENLIGHT = 0.7;
+
+  function PopupElement(parameters) {
+    this.container = parameters.container;
+    this.trigger = parameters.trigger;
+    this.color = parameters.color;
+    this.title = parameters.title;
+    this.contents = parameters.contents;
+    this.hideWrapper = parameters.hideWrapper || false;
+
+    this.pinned = false;
+  }
+
+  PopupElement.prototype = /** @lends PopupElement.prototype */ {
+    /**
+     * Render the popup's HTML element.
+     *
+     * @public
+     * @memberof PopupElement
+     * @returns {HTMLSectionElement}
+     */
+    render: function PopupElement_render() {
+      var wrapper = document.createElement('div');
+      wrapper.className = 'popupWrapper';
+
+      // For Popup annotations we hide the entire section because it contains
+      // only the popup. However, for Text annotations without a separate Popup
+      // annotation, we cannot hide the entire container as the image would
+      // disappear too. In that special case, hiding the wrapper suffices.
+      this.hideElement = (this.hideWrapper ? wrapper : this.container);
+      this.hideElement.setAttribute('hidden', true);
+
+      var popup = document.createElement('div');
+      popup.className = 'popup';
+
+      var color = this.color;
+      if (color) {
+        // Enlighten the color.
+        var r = BACKGROUND_ENLIGHT * (255 - color[0]) + color[0];
+        var g = BACKGROUND_ENLIGHT * (255 - color[1]) + color[1];
+        var b = BACKGROUND_ENLIGHT * (255 - color[2]) + color[2];
+        popup.style.backgroundColor = Util.makeCssRgb(r | 0, g | 0, b | 0);
+      }
+
+      var contents = this._formatContents(this.contents);
+      var title = document.createElement('h1');
+      title.textContent = this.title;
+
+      // Attach the event listeners to the trigger element.
+      this.trigger.addEventListener('click', this._toggle.bind(this));
+      this.trigger.addEventListener('mouseover', this._show.bind(this, false));
+      this.trigger.addEventListener('mouseout', this._hide.bind(this, false));
+      popup.addEventListener('click', this._hide.bind(this, true));
+
+      popup.appendChild(title);
+      popup.appendChild(contents);
+      wrapper.appendChild(popup);
+      return wrapper;
+    },
+
+    /**
+     * Format the contents of the popup by adding newlines where necessary.
+     *
+     * @private
+     * @param {string} contents
+     * @memberof PopupElement
+     * @returns {HTMLParagraphElement}
+     */
+    _formatContents: function PopupElement_formatContents(contents) {
+      var p = document.createElement('p');
+      var lines = contents.split(/(?:\r\n?|\n)/);
+      for (var i = 0, ii = lines.length; i < ii; ++i) {
+        var line = lines[i];
+        p.appendChild(document.createTextNode(line));
+        if (i < (ii - 1)) {
+          p.appendChild(document.createElement('br'));
+        }
+      }
+      return p;
+    },
+
+    /**
+     * Toggle the visibility of the popup.
+     *
+     * @private
+     * @memberof PopupElement
+     */
+    _toggle: function PopupElement_toggle() {
+      if (this.pinned) {
+        this._hide(true);
+      } else {
+        this._show(true);
+      }
+    },
+
+    /**
+     * Show the popup.
+     *
+     * @private
+     * @param {boolean} pin
+     * @memberof PopupElement
+     */
+    _show: function PopupElement_show(pin) {
+      if (pin) {
+        this.pinned = true;
+      }
+      if (this.hideElement.hasAttribute('hidden')) {
+        this.hideElement.removeAttribute('hidden');
+        this.container.style.zIndex += 1;
+      }
+    },
+
+    /**
+     * Hide the popup.
+     *
+     * @private
+     * @param {boolean} unpin
+     * @memberof PopupElement
+     */
+    _hide: function PopupElement_hide(unpin) {
+      if (unpin) {
+        this.pinned = false;
+      }
+      if (!this.hideElement.hasAttribute('hidden') && !this.pinned) {
+        this.hideElement.setAttribute('hidden', true);
+        this.container.style.zIndex -= 1;
+      }
+    }
+  };
+
+  return PopupElement;
+})();
+
+/**
+ * @class
+ * @alias HighlightAnnotationElement
+ */
+var HighlightAnnotationElement = (
+    function HighlightAnnotationElementClosure() {
+  function HighlightAnnotationElement(parameters) {
+    var isRenderable = !!(parameters.data.hasPopup ||
+                          parameters.data.title || parameters.data.contents);
+    AnnotationElement.call(this, parameters, isRenderable);
+  }
+
+  Util.inherit(HighlightAnnotationElement, AnnotationElement, {
+    /**
+     * Render the highlight annotation's HTML element in the empty container.
+     *
+     * @public
+     * @memberof HighlightAnnotationElement
+     * @returns {HTMLSectionElement}
+     */
+    render: function HighlightAnnotationElement_render() {
+      this.container.className = 'highlightAnnotation';
+
+      if (!this.data.hasPopup) {
+        this._createPopup(this.container, null, this.data);
+      }
+
+      return this.container;
+    }
+  });
+
+  return HighlightAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias UnderlineAnnotationElement
+ */
+var UnderlineAnnotationElement = (
+    function UnderlineAnnotationElementClosure() {
+  function UnderlineAnnotationElement(parameters) {
+    var isRenderable = !!(parameters.data.hasPopup ||
+                          parameters.data.title || parameters.data.contents);
+    AnnotationElement.call(this, parameters, isRenderable);
+  }
+
+  Util.inherit(UnderlineAnnotationElement, AnnotationElement, {
+    /**
+     * Render the underline annotation's HTML element in the empty container.
+     *
+     * @public
+     * @memberof UnderlineAnnotationElement
+     * @returns {HTMLSectionElement}
+     */
+    render: function UnderlineAnnotationElement_render() {
+      this.container.className = 'underlineAnnotation';
+
+      if (!this.data.hasPopup) {
+        this._createPopup(this.container, null, this.data);
+      }
+
+      return this.container;
+    }
+  });
+
+  return UnderlineAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias SquigglyAnnotationElement
+ */
+var SquigglyAnnotationElement = (function SquigglyAnnotationElementClosure() {
+  function SquigglyAnnotationElement(parameters) {
+    var isRenderable = !!(parameters.data.hasPopup ||
+                          parameters.data.title || parameters.data.contents);
+    AnnotationElement.call(this, parameters, isRenderable);
+  }
+
+  Util.inherit(SquigglyAnnotationElement, AnnotationElement, {
+    /**
+     * Render the squiggly annotation's HTML element in the empty container.
+     *
+     * @public
+     * @memberof SquigglyAnnotationElement
+     * @returns {HTMLSectionElement}
+     */
+    render: function SquigglyAnnotationElement_render() {
+      this.container.className = 'squigglyAnnotation';
+
+      if (!this.data.hasPopup) {
+        this._createPopup(this.container, null, this.data);
+      }
+
+      return this.container;
+    }
+  });
+
+  return SquigglyAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias StrikeOutAnnotationElement
+ */
+var StrikeOutAnnotationElement = (
+    function StrikeOutAnnotationElementClosure() {
+  function StrikeOutAnnotationElement(parameters) {
+    var isRenderable = !!(parameters.data.hasPopup ||
+                          parameters.data.title || parameters.data.contents);
+    AnnotationElement.call(this, parameters, isRenderable);
+  }
+
+  Util.inherit(StrikeOutAnnotationElement, AnnotationElement, {
+    /**
+     * Render the strikeout annotation's HTML element in the empty container.
+     *
+     * @public
+     * @memberof StrikeOutAnnotationElement
+     * @returns {HTMLSectionElement}
+     */
+    render: function StrikeOutAnnotationElement_render() {
+      this.container.className = 'strikeoutAnnotation';
+
+      if (!this.data.hasPopup) {
+        this._createPopup(this.container, null, this.data);
+      }
+
+      return this.container;
+    }
+  });
+
+  return StrikeOutAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias FileAttachmentAnnotationElement
+ */
+var FileAttachmentAnnotationElement = (
+    function FileAttachmentAnnotationElementClosure() {
+  function FileAttachmentAnnotationElement(parameters) {
+    AnnotationElement.call(this, parameters, true);
+
+    this.filename = getFilenameFromUrl(parameters.data.file.filename);
+    this.content = parameters.data.file.content;
+  }
+
+  Util.inherit(FileAttachmentAnnotationElement, AnnotationElement, {
+    /**
+     * Render the file attachment annotation's HTML element in the empty
+     * container.
+     *
+     * @public
+     * @memberof FileAttachmentAnnotationElement
+     * @returns {HTMLSectionElement}
+     */
+    render: function FileAttachmentAnnotationElement_render() {
+      this.container.className = 'fileAttachmentAnnotation';
+
+      var trigger = document.createElement('div');
+      trigger.style.height = this.container.style.height;
+      trigger.style.width = this.container.style.width;
+      trigger.addEventListener('dblclick', this._download.bind(this));
+
+      if (!this.data.hasPopup && (this.data.title || this.data.contents)) {
+        this._createPopup(this.container, trigger, this.data);
+      }
+
+      this.container.appendChild(trigger);
+      return this.container;
+    },
+
+    /**
+     * Download the file attachment associated with this annotation.
+     *
+     * @private
+     * @memberof FileAttachmentAnnotationElement
+     */
+    _download: function FileAttachmentAnnotationElement_download() {
+      if (!this.downloadManager) {
+        warn('Download cannot be started due to unavailable download manager');
+        return;
+      }
+      this.downloadManager.downloadData(this.content, this.filename, '');
+    }
+  });
+
+  return FileAttachmentAnnotationElement;
+})();
+
+/**
+ * @typedef {Object} AnnotationLayerParameters
+ * @property {PageViewport} viewport
+ * @property {HTMLDivElement} div
+ * @property {Array} annotations
+ * @property {PDFPage} page
+ * @property {IPDFLinkService} linkService
+ * @property {string} imageResourcesPath
+ */
+
+/**
+ * @class
+ * @alias AnnotationLayer
+ */
+var AnnotationLayer = (function AnnotationLayerClosure() {
+  return {
+    /**
+     * Render a new annotation layer with all annotation elements.
+     *
+     * @public
+     * @param {AnnotationLayerParameters} parameters
+     * @memberof AnnotationLayer
+     */
+    render: function AnnotationLayer_render(parameters) {
+      var annotationElementFactory = new AnnotationElementFactory();
+
+      for (var i = 0, ii = parameters.annotations.length; i < ii; i++) {
+        var data = parameters.annotations[i];
+        if (!data) {
+          continue;
+        }
+
+        var properties = {
+          data: data,
+          layer: parameters.div,
+          page: parameters.page,
+          viewport: parameters.viewport,
+          linkService: parameters.linkService,
+          downloadManager: parameters.downloadManager,
+          imageResourcesPath: parameters.imageResourcesPath ||
+                              getDefaultSetting('imageResourcesPath')
+        };
+        var element = annotationElementFactory.create(properties);
+        if (element.isRenderable) {
+          parameters.div.appendChild(element.render());
+        }
+      }
+    },
+
+    /**
+     * Update the annotation elements on existing annotation layer.
+     *
+     * @public
+     * @param {AnnotationLayerParameters} parameters
+     * @memberof AnnotationLayer
+     */
+    update: function AnnotationLayer_update(parameters) {
+      for (var i = 0, ii = parameters.annotations.length; i < ii; i++) {
+        var data = parameters.annotations[i];
+        var element = parameters.div.querySelector(
+          '[data-annotation-id="' + data.id + '"]');
+        if (element) {
+          CustomStyle.setProp('transform', element,
+            'matrix(' + parameters.viewport.transform.join(',') + ')');
+        }
+      }
+      parameters.div.removeAttribute('hidden');
+    }
+  };
+})();
+
+exports.AnnotationLayer = AnnotationLayer;
+}));
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsDisplayTextLayer = {}), root.pdfjsSharedUtil,
+      root.pdfjsDisplayDOMUtils);
+  }
+}(this, function (exports, sharedUtil, displayDOMUtils) {
+
+var Util = sharedUtil.Util;
+var createPromiseCapability = sharedUtil.createPromiseCapability;
+var CustomStyle = displayDOMUtils.CustomStyle;
+var getDefaultSetting = displayDOMUtils.getDefaultSetting;
+var PageViewport = sharedUtil.PageViewport;
+
+/**
+ * Text layer render parameters.
+ *
+ * @typedef {Object} TextLayerRenderParameters
+ * @property {TextContent} textContent - Text content to render (the object is
+ *   returned by the page's getTextContent() method).
+ * @property {HTMLElement} container - HTML element that will contain text runs.
+ * @property {PageViewport} viewport - The target viewport to properly
+ *   layout the text runs.
+ * @property {Array} textDivs - (optional) HTML elements that are correspond
+ *   the text items of the textContent input. This is output and shall be
+ *   initially be set to empty array.
+ * @property {number} timeout - (optional) Delay in milliseconds before
+ *   rendering of the text  runs occurs.
+ */
+var renderTextLayer = (function renderTextLayerClosure() {
+  var MAX_TEXT_DIVS_TO_RENDER = 100000;
+
+  var NonWhitespaceRegexp = /\S/;
+
+  function isAllWhitespace(str) {
+    return !NonWhitespaceRegexp.test(str);
+  }
+
+  function appendText(textDivs, viewport, geom, styles) {
+    var style = styles[geom.fontName];
+    var textDiv = document.createElement('div');
+    textDivs.push(textDiv);
+    if (isAllWhitespace(geom.str)) {
+      textDiv.dataset.isWhitespace = true;
+      return;
+    }
+    var tx = Util.transform(viewport.transform, geom.transform);
+    var angle = Math.atan2(tx[1], tx[0]);
+    if (style.vertical) {
+      angle += Math.PI / 2;
+    }
+    var fontHeight = Math.sqrt((tx[2] * tx[2]) + (tx[3] * tx[3]));
+    var fontAscent = fontHeight;
+    if (style.ascent) {
+      fontAscent = style.ascent * fontAscent;
+    } else if (style.descent) {
+      fontAscent = (1 + style.descent) * fontAscent;
+    }
+
+    var left;
+    var top;
+    if (angle === 0) {
+      left = tx[4];
+      top = tx[5] - fontAscent;
+    } else {
+      left = tx[4] + (fontAscent * Math.sin(angle));
+      top = tx[5] - (fontAscent * Math.cos(angle));
+    }
+    textDiv.style.left = left + 'px';
+    textDiv.style.top = top + 'px';
+    textDiv.style.fontSize = fontHeight + 'px';
+    textDiv.style.fontFamily = style.fontFamily;
+
+    textDiv.textContent = geom.str;
+    // |fontName| is only used by the Font Inspector. This test will succeed
+    // when e.g. the Font Inspector is off but the Stepper is on, but it's
+    // not worth the effort to do a more accurate test.
+    if (getDefaultSetting('pdfBug')) {
+      textDiv.dataset.fontName = geom.fontName;
+    }
+    // Storing into dataset will convert number into string.
+    if (angle !== 0) {
+      textDiv.dataset.angle = angle * (180 / Math.PI);
+    }
+    // We don't bother scaling single-char text divs, because it has very
+    // little effect on text highlighting. This makes scrolling on docs with
+    // lots of such divs a lot faster.
+    if (geom.str.length > 1) {
+      if (style.vertical) {
+        textDiv.dataset.canvasWidth = geom.height * viewport.scale;
+      } else {
+        textDiv.dataset.canvasWidth = geom.width * viewport.scale;
+      }
+    }
+  }
+
+  function render(task) {
+    if (task._canceled) {
+      return;
+    }
+    var textLayerFrag = task._container;
+    var textDivs = task._textDivs;
+    var capability = task._capability;
+    var textDivsLength = textDivs.length;
+
+    // No point in rendering many divs as it would make the browser
+    // unusable even after the divs are rendered.
+    if (textDivsLength > MAX_TEXT_DIVS_TO_RENDER) {
+      capability.resolve();
+      return;
+    }
+
+    var canvas = document.createElement('canvas');
+    canvas.mozOpaque = true;
+    var ctx = canvas.getContext('2d', {alpha: false});
+
+    var lastFontSize;
+    var lastFontFamily;
+    for (var i = 0; i < textDivsLength; i++) {
+      var textDiv = textDivs[i];
+      if (textDiv.dataset.isWhitespace !== undefined) {
+        continue;
+      }
+
+      var fontSize = textDiv.style.fontSize;
+      var fontFamily = textDiv.style.fontFamily;
+
+      // Only build font string and set to context if different from last.
+      if (fontSize !== lastFontSize || fontFamily !== lastFontFamily) {
+        ctx.font = fontSize + ' ' + fontFamily;
+        lastFontSize = fontSize;
+        lastFontFamily = fontFamily;
+      }
+
+      var width = ctx.measureText(textDiv.textContent).width;
+      if (width > 0) {
+        textLayerFrag.appendChild(textDiv);
+        var transform;
+        if (textDiv.dataset.canvasWidth !== undefined) {
+          // Dataset values come of type string.
+          var textScale = textDiv.dataset.canvasWidth / width;
+          transform = 'scaleX(' + textScale + ')';
+        } else {
+          transform = '';
+        }
+        var rotation = textDiv.dataset.angle;
+        if (rotation) {
+          transform = 'rotate(' + rotation + 'deg) ' + transform;
+        }
+        if (transform) {
+          CustomStyle.setProp('transform' , textDiv, transform);
+        }
+      }
+    }
+    capability.resolve();
+  }
+
+  /**
+   * Text layer rendering task.
+   *
+   * @param {TextContent} textContent
+   * @param {HTMLElement} container
+   * @param {PageViewport} viewport
+   * @param {Array} textDivs
+   * @private
+   */
+  function TextLayerRenderTask(textContent, container, viewport, textDivs) {
+    this._textContent = textContent;
+    this._container = container;
+    this._viewport = viewport;
+    textDivs = textDivs || [];
+    this._textDivs = textDivs;
+    this._canceled = false;
+    this._capability = createPromiseCapability();
+    this._renderTimer = null;
+  }
+  TextLayerRenderTask.prototype = {
+    get promise() {
+      return this._capability.promise;
+    },
+
+    cancel: function TextLayer_cancel() {
+      this._canceled = true;
+      if (this._renderTimer !== null) {
+        clearTimeout(this._renderTimer);
+        this._renderTimer = null;
+      }
+      this._capability.reject('canceled');
+    },
+
+    _render: function TextLayer_render(timeout) {
+      var textItems = this._textContent.items;
+      var styles = this._textContent.styles;
+      var textDivs = this._textDivs;
+      var viewport = this._viewport;
+      for (var i = 0, len = textItems.length; i < len; i++) {
+        appendText(textDivs, viewport, textItems[i], styles);
+      }
+
+      if (!timeout) { // Render right away
+        render(this);
+      } else { // Schedule
+        var self = this;
+        this._renderTimer = setTimeout(function() {
+          render(self);
+          self._renderTimer = null;
+        }, timeout);
+      }
+    }
+  };
+
+
+  /**
+   * Starts rendering of the text layer.
+   *
+   * @param {TextLayerRenderParameters} renderParameters
+   * @returns {TextLayerRenderTask}
+   */
+  function renderTextLayer(renderParameters) {
+    var task = new TextLayerRenderTask(renderParameters.textContent,
+                                       renderParameters.container,
+                                       renderParameters.viewport,
+                                       renderParameters.textDivs);
+    task._render(renderParameters.timeout);
+    return task;
+  }
+
+  return renderTextLayer;
+})();
+
+exports.renderTextLayer = renderTextLayer;
+}));
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsDisplayWebGL = {}), root.pdfjsSharedUtil,
+      root.pdfjsDisplayDOMUtils);
+  }
+}(this, function (exports, sharedUtil, displayDOMUtils) {
+
+var shadow = sharedUtil.shadow;
+var getDefaultSetting = displayDOMUtils.getDefaultSetting;
+
+var WebGLUtils = (function WebGLUtilsClosure() {
+  function loadShader(gl, code, shaderType) {
+    var shader = gl.createShader(shaderType);
+    gl.shaderSource(shader, code);
+    gl.compileShader(shader);
+    var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
+    if (!compiled) {
+      var errorMsg = gl.getShaderInfoLog(shader);
+      throw new Error('Error during shader compilation: ' + errorMsg);
+    }
+    return shader;
+  }
+  function createVertexShader(gl, code) {
+    return loadShader(gl, code, gl.VERTEX_SHADER);
+  }
+  function createFragmentShader(gl, code) {
+    return loadShader(gl, code, gl.FRAGMENT_SHADER);
+  }
+  function createProgram(gl, shaders) {
+    var program = gl.createProgram();
+    for (var i = 0, ii = shaders.length; i < ii; ++i) {
+      gl.attachShader(program, shaders[i]);
+    }
+    gl.linkProgram(program);
+    var linked = gl.getProgramParameter(program, gl.LINK_STATUS);
+    if (!linked) {
+      var errorMsg = gl.getProgramInfoLog(program);
+      throw new Error('Error during program linking: ' + errorMsg);
+    }
+    return program;
+  }
+  function createTexture(gl, image, textureId) {
+    gl.activeTexture(textureId);
+    var texture = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, texture);
+
+    // Set the parameters so we can render any size image.
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+
+    // Upload the image into the texture.
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);
+    return texture;
+  }
+
+  var currentGL, currentCanvas;
+  function generateGL() {
+    if (currentGL) {
+      return;
+    }
+    currentCanvas = document.createElement('canvas');
+    currentGL = currentCanvas.getContext('webgl',
+      { premultipliedalpha: false });
+  }
+
+  var smaskVertexShaderCode = '\
+  attribute vec2 a_position;                                    \
+  attribute vec2 a_texCoord;                                    \
+                                                                \
+  uniform vec2 u_resolution;                                    \
+                                                                \
+  varying vec2 v_texCoord;                                      \
+                                                                \
+  void main() {                                                 \
+    vec2 clipSpace = (a_position / u_resolution) * 2.0 - 1.0;   \
+    gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1);          \
+                                                                \
+    v_texCoord = a_texCoord;                                    \
+  }                                                             ';
+
+  var smaskFragmentShaderCode = '\
+  precision mediump float;                                      \
+                                                                \
+  uniform vec4 u_backdrop;                                      \
+  uniform int u_subtype;                                        \
+  uniform sampler2D u_image;                                    \
+  uniform sampler2D u_mask;                                     \
+                                                                \
+  varying vec2 v_texCoord;                                      \
+                                                                \
+  void main() {                                                 \
+    vec4 imageColor = texture2D(u_image, v_texCoord);           \
+    vec4 maskColor = texture2D(u_mask, v_texCoord);             \
+    if (u_backdrop.a > 0.0) {                                   \
+      maskColor.rgb = maskColor.rgb * maskColor.a +             \
+                      u_backdrop.rgb * (1.0 - maskColor.a);     \
+    }                                                           \
+    float lum;                                                  \
+    if (u_subtype == 0) {                                       \
+      lum = maskColor.a;                                        \
+    } else {                                                    \
+      lum = maskColor.r * 0.3 + maskColor.g * 0.59 +            \
+            maskColor.b * 0.11;                                 \
+    }                                                           \
+    imageColor.a *= lum;                                        \
+    imageColor.rgb *= imageColor.a;                             \
+    gl_FragColor = imageColor;                                  \
+  }                                                             ';
+
+  var smaskCache = null;
+
+  function initSmaskGL() {
+    var canvas, gl;
+
+    generateGL();
+    canvas = currentCanvas;
+    currentCanvas = null;
+    gl = currentGL;
+    currentGL = null;
+
+    // setup a GLSL program
+    var vertexShader = createVertexShader(gl, smaskVertexShaderCode);
+    var fragmentShader = createFragmentShader(gl, smaskFragmentShaderCode);
+    var program = createProgram(gl, [vertexShader, fragmentShader]);
+    gl.useProgram(program);
+
+    var cache = {};
+    cache.gl = gl;
+    cache.canvas = canvas;
+    cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution');
+    cache.positionLocation = gl.getAttribLocation(program, 'a_position');
+    cache.backdropLocation = gl.getUniformLocation(program, 'u_backdrop');
+    cache.subtypeLocation = gl.getUniformLocation(program, 'u_subtype');
+
+    var texCoordLocation = gl.getAttribLocation(program, 'a_texCoord');
+    var texLayerLocation = gl.getUniformLocation(program, 'u_image');
+    var texMaskLocation = gl.getUniformLocation(program, 'u_mask');
+
+    // provide texture coordinates for the rectangle.
+    var texCoordBuffer = gl.createBuffer();
+    gl.bindBuffer(gl.ARRAY_BUFFER, texCoordBuffer);
+    gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
+      0.0,  0.0,
+      1.0,  0.0,
+      0.0,  1.0,
+      0.0,  1.0,
+      1.0,  0.0,
+      1.0,  1.0]), gl.STATIC_DRAW);
+    gl.enableVertexAttribArray(texCoordLocation);
+    gl.vertexAttribPointer(texCoordLocation, 2, gl.FLOAT, false, 0, 0);
+
+    gl.uniform1i(texLayerLocation, 0);
+    gl.uniform1i(texMaskLocation, 1);
+
+    smaskCache = cache;
+  }
+
+  function composeSMask(layer, mask, properties) {
+    var width = layer.width, height = layer.height;
+
+    if (!smaskCache) {
+      initSmaskGL();
+    }
+    var cache = smaskCache,canvas = cache.canvas, gl = cache.gl;
+    canvas.width = width;
+    canvas.height = height;
+    gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
+    gl.uniform2f(cache.resolutionLocation, width, height);
+
+    if (properties.backdrop) {
+      gl.uniform4f(cache.resolutionLocation, properties.backdrop[0],
+                   properties.backdrop[1], properties.backdrop[2], 1);
+    } else {
+      gl.uniform4f(cache.resolutionLocation, 0, 0, 0, 0);
+    }
+    gl.uniform1i(cache.subtypeLocation,
+                 properties.subtype === 'Luminosity' ? 1 : 0);
+
+    // Create a textures
+    var texture = createTexture(gl, layer, gl.TEXTURE0);
+    var maskTexture = createTexture(gl, mask, gl.TEXTURE1);
+
+
+    // Create a buffer and put a single clipspace rectangle in
+    // it (2 triangles)
+    var buffer = gl.createBuffer();
+    gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+    gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
+      0, 0,
+      width, 0,
+      0, height,
+      0, height,
+      width, 0,
+      width, height]), gl.STATIC_DRAW);
+    gl.enableVertexAttribArray(cache.positionLocation);
+    gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0);
+
+    // draw
+    gl.clearColor(0, 0, 0, 0);
+    gl.enable(gl.BLEND);
+    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+    gl.clear(gl.COLOR_BUFFER_BIT);
+
+    gl.drawArrays(gl.TRIANGLES, 0, 6);
+
+    gl.flush();
+
+    gl.deleteTexture(texture);
+    gl.deleteTexture(maskTexture);
+    gl.deleteBuffer(buffer);
+
+    return canvas;
+  }
+
+  var figuresVertexShaderCode = '\
+  attribute vec2 a_position;                                    \
+  attribute vec3 a_color;                                       \
+                                                                \
+  uniform vec2 u_resolution;                                    \
+  uniform vec2 u_scale;                                         \
+  uniform vec2 u_offset;                                        \
+                                                                \
+  varying vec4 v_color;                                         \
+                                                                \
+  void main() {                                                 \
+    vec2 position = (a_position + u_offset) * u_scale;          \
+    vec2 clipSpace = (position / u_resolution) * 2.0 - 1.0;     \
+    gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1);          \
+                                                                \
+    v_color = vec4(a_color / 255.0, 1.0);                       \
+  }                                                             ';
+
+  var figuresFragmentShaderCode = '\
+  precision mediump float;                                      \
+                                                                \
+  varying vec4 v_color;                                         \
+                                                                \
+  void main() {                                                 \
+    gl_FragColor = v_color;                                     \
+  }                                                             ';
+
+  var figuresCache = null;
+
+  function initFiguresGL() {
+    var canvas, gl;
+
+    generateGL();
+    canvas = currentCanvas;
+    currentCanvas = null;
+    gl = currentGL;
+    currentGL = null;
+
+    // setup a GLSL program
+    var vertexShader = createVertexShader(gl, figuresVertexShaderCode);
+    var fragmentShader = createFragmentShader(gl, figuresFragmentShaderCode);
+    var program = createProgram(gl, [vertexShader, fragmentShader]);
+    gl.useProgram(program);
+
+    var cache = {};
+    cache.gl = gl;
+    cache.canvas = canvas;
+    cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution');
+    cache.scaleLocation = gl.getUniformLocation(program, 'u_scale');
+    cache.offsetLocation = gl.getUniformLocation(program, 'u_offset');
+    cache.positionLocation = gl.getAttribLocation(program, 'a_position');
+    cache.colorLocation = gl.getAttribLocation(program, 'a_color');
+
+    figuresCache = cache;
+  }
+
+  function drawFigures(width, height, backgroundColor, figures, context) {
+    if (!figuresCache) {
+      initFiguresGL();
+    }
+    var cache = figuresCache, canvas = cache.canvas, gl = cache.gl;
+
+    canvas.width = width;
+    canvas.height = height;
+    gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
+    gl.uniform2f(cache.resolutionLocation, width, height);
+
+    // count triangle points
+    var count = 0;
+    var i, ii, rows;
+    for (i = 0, ii = figures.length; i < ii; i++) {
+      switch (figures[i].type) {
+        case 'lattice':
+          rows = (figures[i].coords.length / figures[i].verticesPerRow) | 0;
+          count += (rows - 1) * (figures[i].verticesPerRow - 1) * 6;
+          break;
+        case 'triangles':
+          count += figures[i].coords.length;
+          break;
+      }
+    }
+    // transfer data
+    var coords = new Float32Array(count * 2);
+    var colors = new Uint8Array(count * 3);
+    var coordsMap = context.coords, colorsMap = context.colors;
+    var pIndex = 0, cIndex = 0;
+    for (i = 0, ii = figures.length; i < ii; i++) {
+      var figure = figures[i], ps = figure.coords, cs = figure.colors;
+      switch (figure.type) {
+        case 'lattice':
+          var cols = figure.verticesPerRow;
+          rows = (ps.length / cols) | 0;
+          for (var row = 1; row < rows; row++) {
+            var offset = row * cols + 1;
+            for (var col = 1; col < cols; col++, offset++) {
+              coords[pIndex] = coordsMap[ps[offset - cols - 1]];
+              coords[pIndex + 1] = coordsMap[ps[offset - cols - 1] + 1];
+              coords[pIndex + 2] = coordsMap[ps[offset - cols]];
+              coords[pIndex + 3] = coordsMap[ps[offset - cols] + 1];
+              coords[pIndex + 4] = coordsMap[ps[offset - 1]];
+              coords[pIndex + 5] = coordsMap[ps[offset - 1] + 1];
+              colors[cIndex] = colorsMap[cs[offset - cols - 1]];
+              colors[cIndex + 1] = colorsMap[cs[offset - cols - 1] + 1];
+              colors[cIndex + 2] = colorsMap[cs[offset - cols - 1] + 2];
+              colors[cIndex + 3] = colorsMap[cs[offset - cols]];
+              colors[cIndex + 4] = colorsMap[cs[offset - cols] + 1];
+              colors[cIndex + 5] = colorsMap[cs[offset - cols] + 2];
+              colors[cIndex + 6] = colorsMap[cs[offset - 1]];
+              colors[cIndex + 7] = colorsMap[cs[offset - 1] + 1];
+              colors[cIndex + 8] = colorsMap[cs[offset - 1] + 2];
+
+              coords[pIndex + 6] = coords[pIndex + 2];
+              coords[pIndex + 7] = coords[pIndex + 3];
+              coords[pIndex + 8] = coords[pIndex + 4];
+              coords[pIndex + 9] = coords[pIndex + 5];
+              coords[pIndex + 10] = coordsMap[ps[offset]];
+              coords[pIndex + 11] = coordsMap[ps[offset] + 1];
+              colors[cIndex + 9] = colors[cIndex + 3];
+              colors[cIndex + 10] = colors[cIndex + 4];
+              colors[cIndex + 11] = colors[cIndex + 5];
+              colors[cIndex + 12] = colors[cIndex + 6];
+              colors[cIndex + 13] = colors[cIndex + 7];
+              colors[cIndex + 14] = colors[cIndex + 8];
+              colors[cIndex + 15] = colorsMap[cs[offset]];
+              colors[cIndex + 16] = colorsMap[cs[offset] + 1];
+              colors[cIndex + 17] = colorsMap[cs[offset] + 2];
+              pIndex += 12;
+              cIndex += 18;
+            }
+          }
+          break;
+        case 'triangles':
+          for (var j = 0, jj = ps.length; j < jj; j++) {
+            coords[pIndex] = coordsMap[ps[j]];
+            coords[pIndex + 1] = coordsMap[ps[j] + 1];
+            colors[cIndex] = colorsMap[cs[j]];
+            colors[cIndex + 1] = colorsMap[cs[j] + 1];
+            colors[cIndex + 2] = colorsMap[cs[j] + 2];
+            pIndex += 2;
+            cIndex += 3;
+          }
+          break;
+      }
+    }
+
+    // draw
+    if (backgroundColor) {
+      gl.clearColor(backgroundColor[0] / 255, backgroundColor[1] / 255,
+                    backgroundColor[2] / 255, 1.0);
+    } else {
+      gl.clearColor(0, 0, 0, 0);
+    }
+    gl.clear(gl.COLOR_BUFFER_BIT);
+
+    var coordsBuffer = gl.createBuffer();
+    gl.bindBuffer(gl.ARRAY_BUFFER, coordsBuffer);
+    gl.bufferData(gl.ARRAY_BUFFER, coords, gl.STATIC_DRAW);
+    gl.enableVertexAttribArray(cache.positionLocation);
+    gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0);
+
+    var colorsBuffer = gl.createBuffer();
+    gl.bindBuffer(gl.ARRAY_BUFFER, colorsBuffer);
+    gl.bufferData(gl.ARRAY_BUFFER, colors, gl.STATIC_DRAW);
+    gl.enableVertexAttribArray(cache.colorLocation);
+    gl.vertexAttribPointer(cache.colorLocation, 3, gl.UNSIGNED_BYTE, false,
+                           0, 0);
+
+    gl.uniform2f(cache.scaleLocation, context.scaleX, context.scaleY);
+    gl.uniform2f(cache.offsetLocation, context.offsetX, context.offsetY);
+
+    gl.drawArrays(gl.TRIANGLES, 0, count);
+
+    gl.flush();
+
+    gl.deleteBuffer(coordsBuffer);
+    gl.deleteBuffer(colorsBuffer);
+
+    return canvas;
+  }
+
+  function cleanup() {
+    if (smaskCache && smaskCache.canvas) {
+      smaskCache.canvas.width = 0;
+      smaskCache.canvas.height = 0;
+    }
+    if (figuresCache && figuresCache.canvas) {
+      figuresCache.canvas.width = 0;
+      figuresCache.canvas.height = 0;
+    }
+    smaskCache = null;
+    figuresCache = null;
+  }
+
+  return {
+    get isEnabled() {
+      if (getDefaultSetting('disableWebGL')) {
+        return false;
+      }
+      var enabled = false;
+      try {
+        generateGL();
+        enabled = !!currentGL;
+      } catch (e) { }
+      return shadow(this, 'isEnabled', enabled);
+    },
+    composeSMask: composeSMask,
+    drawFigures: drawFigures,
+    clear: cleanup
+  };
+})();
+
+exports.WebGLUtils = WebGLUtils;
+}));
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsDisplayPatternHelper = {}), root.pdfjsSharedUtil,
+      root.pdfjsDisplayWebGL);
+  }
+}(this, function (exports, sharedUtil, displayWebGL) {
+
+var Util = sharedUtil.Util;
+var info = sharedUtil.info;
+var isArray = sharedUtil.isArray;
+var error = sharedUtil.error;
+var WebGLUtils = displayWebGL.WebGLUtils;
+
+var ShadingIRs = {};
+
+ShadingIRs.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 === 'axial') {
+          grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]);
+        } else if (type === '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;
+      }
+    };
+  }
+};
+
+var createMeshCanvas = (function createMeshCanvasClosure() {
+  function drawTriangle(data, context, p1, p2, p3, c1, c2, c3) {
+    // Very basic Gouraud-shaded triangle rasterization algorithm.
+    var coords = context.coords, colors = context.colors;
+    var bytes = data.data, rowSize = data.width * 4;
+    var tmp;
+    if (coords[p1 + 1] > coords[p2 + 1]) {
+      tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp;
+    }
+    if (coords[p2 + 1] > coords[p3 + 1]) {
+      tmp = p2; p2 = p3; p3 = tmp; tmp = c2; c2 = c3; c3 = tmp;
+    }
+    if (coords[p1 + 1] > coords[p2 + 1]) {
+      tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp;
+    }
+    var x1 = (coords[p1] + context.offsetX) * context.scaleX;
+    var y1 = (coords[p1 + 1] + context.offsetY) * context.scaleY;
+    var x2 = (coords[p2] + context.offsetX) * context.scaleX;
+    var y2 = (coords[p2 + 1] + context.offsetY) * context.scaleY;
+    var x3 = (coords[p3] + context.offsetX) * context.scaleX;
+    var y3 = (coords[p3 + 1] + context.offsetY) * context.scaleY;
+    if (y1 >= y3) {
+      return;
+    }
+    var c1r = colors[c1], c1g = colors[c1 + 1], c1b = colors[c1 + 2];
+    var c2r = colors[c2], c2g = colors[c2 + 1], c2b = colors[c2 + 2];
+    var c3r = colors[c3], c3g = colors[c3 + 1], c3b = colors[c3 + 2];
+
+    var minY = Math.round(y1), maxY = Math.round(y3);
+    var xa, car, cag, cab;
+    var xb, cbr, cbg, cbb;
+    var k;
+    for (var y = minY; y <= maxY; y++) {
+      if (y < y2) {
+        k = y < y1 ? 0 : y1 === y2 ? 1 : (y1 - y) / (y1 - y2);
+        xa = x1 - (x1 - x2) * k;
+        car = c1r - (c1r - c2r) * k;
+        cag = c1g - (c1g - c2g) * k;
+        cab = c1b - (c1b - c2b) * k;
+      } else {
+        k = y > y3 ? 1 : y2 === y3 ? 0 : (y2 - y) / (y2 - y3);
+        xa = x2 - (x2 - x3) * k;
+        car = c2r - (c2r - c3r) * k;
+        cag = c2g - (c2g - c3g) * k;
+        cab = c2b - (c2b - c3b) * k;
+      }
+      k = y < y1 ? 0 : y > y3 ? 1 : (y1 - y) / (y1 - y3);
+      xb = x1 - (x1 - x3) * k;
+      cbr = c1r - (c1r - c3r) * k;
+      cbg = c1g - (c1g - c3g) * k;
+      cbb = c1b - (c1b - c3b) * k;
+      var x1_ = Math.round(Math.min(xa, xb));
+      var x2_ = Math.round(Math.max(xa, xb));
+      var j = rowSize * y + x1_ * 4;
+      for (var x = x1_; x <= x2_; x++) {
+        k = (xa - x) / (xa - xb);
+        k = k < 0 ? 0 : k > 1 ? 1 : k;
+        bytes[j++] = (car - (car - cbr) * k) | 0;
+        bytes[j++] = (cag - (cag - cbg) * k) | 0;
+        bytes[j++] = (cab - (cab - cbb) * k) | 0;
+        bytes[j++] = 255;
+      }
+    }
+  }
+
+  function drawFigure(data, figure, context) {
+    var ps = figure.coords;
+    var cs = figure.colors;
+    var i, ii;
+    switch (figure.type) {
+      case 'lattice':
+        var verticesPerRow = figure.verticesPerRow;
+        var rows = Math.floor(ps.length / verticesPerRow) - 1;
+        var cols = verticesPerRow - 1;
+        for (i = 0; i < rows; i++) {
+          var q = i * verticesPerRow;
+          for (var j = 0; j < cols; j++, q++) {
+            drawTriangle(data, context,
+              ps[q], ps[q + 1], ps[q + verticesPerRow],
+              cs[q], cs[q + 1], cs[q + verticesPerRow]);
+            drawTriangle(data, context,
+              ps[q + verticesPerRow + 1], ps[q + 1], ps[q + verticesPerRow],
+              cs[q + verticesPerRow + 1], cs[q + 1], cs[q + verticesPerRow]);
+          }
+        }
+        break;
+      case 'triangles':
+        for (i = 0, ii = ps.length; i < ii; i += 3) {
+          drawTriangle(data, context,
+            ps[i], ps[i + 1], ps[i + 2],
+            cs[i], cs[i + 1], cs[i + 2]);
+        }
+        break;
+      default:
+        error('illigal figure');
+        break;
+    }
+  }
+
+  function createMeshCanvas(bounds, combinesScale, coords, colors, figures,
+                            backgroundColor, cachedCanvases) {
+    // we will increase scale on some weird factor to let antialiasing take
+    // care of "rough" edges
+    var EXPECTED_SCALE = 1.1;
+    // MAX_PATTERN_SIZE is used to avoid OOM situation.
+    var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough
+    // We need to keep transparent border around our pattern for fill():
+    // createPattern with 'no-repeat' will bleed edges accross entire area.
+    var BORDER_SIZE = 2;
+
+    var offsetX = Math.floor(bounds[0]);
+    var offsetY = Math.floor(bounds[1]);
+    var boundsWidth = Math.ceil(bounds[2]) - offsetX;
+    var boundsHeight = Math.ceil(bounds[3]) - offsetY;
+
+    var width = Math.min(Math.ceil(Math.abs(boundsWidth * combinesScale[0] *
+      EXPECTED_SCALE)), MAX_PATTERN_SIZE);
+    var height = Math.min(Math.ceil(Math.abs(boundsHeight * combinesScale[1] *
+      EXPECTED_SCALE)), MAX_PATTERN_SIZE);
+    var scaleX = boundsWidth / width;
+    var scaleY = boundsHeight / height;
+
+    var context = {
+      coords: coords,
+      colors: colors,
+      offsetX: -offsetX,
+      offsetY: -offsetY,
+      scaleX: 1 / scaleX,
+      scaleY: 1 / scaleY
+    };
+
+    var paddedWidth = width + BORDER_SIZE * 2;
+    var paddedHeight = height + BORDER_SIZE * 2;
+
+    var canvas, tmpCanvas, i, ii;
+    if (WebGLUtils.isEnabled) {
+      canvas = WebGLUtils.drawFigures(width, height, backgroundColor,
+                                      figures, context);
+
+      // https://bugzilla.mozilla.org/show_bug.cgi?id=972126
+      tmpCanvas = cachedCanvases.getCanvas('mesh', paddedWidth, paddedHeight,
+                                           false);
+      tmpCanvas.context.drawImage(canvas, BORDER_SIZE, BORDER_SIZE);
+      canvas = tmpCanvas.canvas;
+    } else {
+      tmpCanvas = cachedCanvases.getCanvas('mesh', paddedWidth, paddedHeight,
+                                           false);
+      var tmpCtx = tmpCanvas.context;
+
+      var data = tmpCtx.createImageData(width, height);
+      if (backgroundColor) {
+        var bytes = data.data;
+        for (i = 0, ii = bytes.length; i < ii; i += 4) {
+          bytes[i] = backgroundColor[0];
+          bytes[i + 1] = backgroundColor[1];
+          bytes[i + 2] = backgroundColor[2];
+          bytes[i + 3] = 255;
+        }
+      }
+      for (i = 0; i < figures.length; i++) {
+        drawFigure(data, figures[i], context);
+      }
+      tmpCtx.putImageData(data, BORDER_SIZE, BORDER_SIZE);
+      canvas = tmpCanvas.canvas;
+    }
+
+    return {canvas: canvas,
+            offsetX: offsetX - BORDER_SIZE * scaleX,
+            offsetY: offsetY - BORDER_SIZE * scaleY,
+            scaleX: scaleX, scaleY: scaleY};
+  }
+  return createMeshCanvas;
+})();
+
+ShadingIRs.Mesh = {
+  fromIR: function Mesh_fromIR(raw) {
+    //var type = raw[1];
+    var coords = raw[2];
+    var colors = raw[3];
+    var figures = raw[4];
+    var bounds = raw[5];
+    var matrix = raw[6];
+    //var bbox = raw[7];
+    var background = raw[8];
+    return {
+      type: 'Pattern',
+      getPattern: function Mesh_getPattern(ctx, owner, shadingFill) {
+        var scale;
+        if (shadingFill) {
+          scale = Util.singularValueDecompose2dScale(ctx.mozCurrentTransform);
+        } else {
+          // Obtain scale from matrix and current transformation matrix.
+          scale = Util.singularValueDecompose2dScale(owner.baseTransform);
+          if (matrix) {
+            var matrixScale = Util.singularValueDecompose2dScale(matrix);
+            scale = [scale[0] * matrixScale[0],
+                     scale[1] * matrixScale[1]];
+          }
+        }
+
+
+        // Rasterizing on the main thread since sending/queue large canvases
+        // might cause OOM.
+        var temporaryPatternCanvas = createMeshCanvas(bounds, scale, coords,
+          colors, figures, shadingFill ? null : background,
+          owner.cachedCanvases);
+
+        if (!shadingFill) {
+          ctx.setTransform.apply(ctx, owner.baseTransform);
+          if (matrix) {
+            ctx.transform.apply(ctx, matrix);
+          }
+        }
+
+        ctx.translate(temporaryPatternCanvas.offsetX,
+                      temporaryPatternCanvas.offsetY);
+        ctx.scale(temporaryPatternCanvas.scaleX,
+                  temporaryPatternCanvas.scaleY);
+
+        return ctx.createPattern(temporaryPatternCanvas.canvas, 'no-repeat');
+      }
+    };
+  }
+};
+
+ShadingIRs.Dummy = {
+  fromIR: function Dummy_fromIR() {
+    return {
+      type: 'Pattern',
+      getPattern: function Dummy_fromIR_getPattern() {
+        return 'hotpink';
+      }
+    };
+  }
+};
+
+function getShadingPatternFromIR(raw) {
+  var shadingIR = ShadingIRs[raw[0]];
+  if (!shadingIR) {
+    error('Unknown IR type: ' + raw[0]);
+  }
+  return shadingIR.fromIR(raw);
+}
+
+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, canvasGraphicsFactory, baseTransform) {
+    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.canvasGraphicsFactory = canvasGraphicsFactory;
+    this.baseTransform = baseTransform;
+    this.type = 'Pattern';
+    this.ctx = ctx;
+  }
+
+  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 canvasGraphicsFactory = this.canvasGraphicsFactory;
+
+      info('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 = owner.cachedCanvases.getCanvas('pattern',
+        width, height, true);
+      var tmpCtx = tmpCanvas.context;
+      var graphics = canvasGraphicsFactory.createCanvasGraphics(tmpCtx);
+      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) && bbox.length === 4) {
+        var bboxWidth = x1 - x0;
+        var bboxHeight = y1 - y0;
+        graphics.ctx.rect(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 cssColor = Util.makeCssRgb(color[0], color[1], color[2]);
+            context.fillStyle = cssColor;
+            context.strokeStyle = cssColor;
+            break;
+          default:
+            error('Unsupported paint type: ' + paintType);
+        }
+      },
+
+    getPattern: function TilingPattern_getPattern(ctx, owner) {
+      var temporaryPatternCanvas = this.createPatternCanvas(owner);
+
+      ctx = this.ctx;
+      ctx.setTransform.apply(ctx, this.baseTransform);
+      ctx.transform.apply(ctx, this.matrix);
+      this.scaleToContext();
+
+      return ctx.createPattern(temporaryPatternCanvas, 'repeat');
+    }
+  };
+
+  return TilingPattern;
+})();
+
+exports.getShadingPatternFromIR = getShadingPatternFromIR;
+exports.TilingPattern = TilingPattern;
+}));
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsDisplayCanvas = {}), root.pdfjsSharedUtil,
+      root.pdfjsDisplayDOMUtils, root.pdfjsDisplayPatternHelper,
+      root.pdfjsDisplayWebGL);
+  }
+}(this, function (exports, sharedUtil, displayDOMUtils, displayPatternHelper,
+                  displayWebGL) {
+
+var FONT_IDENTITY_MATRIX = sharedUtil.FONT_IDENTITY_MATRIX;
+var IDENTITY_MATRIX = sharedUtil.IDENTITY_MATRIX;
+var ImageKind = sharedUtil.ImageKind;
+var OPS = sharedUtil.OPS;
+var TextRenderingMode = sharedUtil.TextRenderingMode;
+var Uint32ArrayView = sharedUtil.Uint32ArrayView;
+var Util = sharedUtil.Util;
+var assert = sharedUtil.assert;
+var info = sharedUtil.info;
+var isNum = sharedUtil.isNum;
+var isArray = sharedUtil.isArray;
+var isLittleEndian = sharedUtil.isLittleEndian;
+var error = sharedUtil.error;
+var shadow = sharedUtil.shadow;
+var warn = sharedUtil.warn;
+var TilingPattern = displayPatternHelper.TilingPattern;
+var getShadingPatternFromIR = displayPatternHelper.getShadingPatternFromIR;
+var WebGLUtils = displayWebGL.WebGLUtils;
+var hasCanvasTypedArrays = displayDOMUtils.hasCanvasTypedArrays;
+
+// <canvas> contexts store most of the state we need natively.
+// However, PDF needs a bit more state, which we store here.
+
+// Minimal font size that would be used during canvas fillText operations.
+var MIN_FONT_SIZE = 16;
+// Maximum font size that would be used during canvas fillText operations.
+var MAX_FONT_SIZE = 100;
+var MAX_GROUP_SIZE = 4096;
+
+// Heuristic value used when enforcing minimum line widths.
+var MIN_WIDTH_FACTOR = 0.65;
+
+var COMPILE_TYPE3_GLYPHS = true;
+var MAX_SIZE_TO_COMPILE = 1000;
+
+var FULL_CHUNK_HEIGHT = 16;
+
+var HasCanvasTypedArraysCached = {
+  get value() {
+    return shadow(HasCanvasTypedArraysCached, 'value', hasCanvasTypedArrays());
+  }
+};
+
+var IsLittleEndianCached = {
+  get value() {
+    return shadow(IsLittleEndianCached, 'value', isLittleEndian());
+  }
+};
+
+function createScratchCanvas(width, height) {
+  var canvas = document.createElement('canvas');
+  canvas.width = width;
+  canvas.height = height;
+  return canvas;
+}
+
+function addContextCurrentTransform(ctx) {
+  // If the context doesn't expose a `mozCurrentTransform`, add a JS based one.
+  if (!ctx.mozCurrentTransform) {
+    ctx._originalSave = ctx.save;
+    ctx._originalRestore = ctx.restore;
+    ctx._originalRotate = ctx.rotate;
+    ctx._originalScale = ctx.scale;
+    ctx._originalTranslate = ctx.translate;
+    ctx._originalTransform = ctx.transform;
+    ctx._originalSetTransform = ctx.setTransform;
+
+    ctx._transformMatrix = ctx._transformMatrix || [1, 0, 0, 1, 0, 0];
+    ctx._transformStack = [];
+
+    Object.defineProperty(ctx, 'mozCurrentTransform', {
+      get: function getCurrentTransform() {
+        return this._transformMatrix;
+      }
+    });
+
+    Object.defineProperty(ctx, 'mozCurrentTransformInverse', {
+      get: function getCurrentTransformInverse() {
+        // Calculation done using WolframAlpha:
+        // http://www.wolframalpha.com/input/?
+        //   i=Inverse+{{a%2C+c%2C+e}%2C+{b%2C+d%2C+f}%2C+{0%2C+0%2C+1}}
+
+        var m = this._transformMatrix;
+        var a = m[0], b = m[1], c = m[2], d = m[3], e = m[4], f = m[5];
+
+        var ad_bc = a * d - b * c;
+        var bc_ad = b * c - a * d;
+
+        return [
+          d / ad_bc,
+          b / bc_ad,
+          c / bc_ad,
+          a / ad_bc,
+          (d * e - c * f) / bc_ad,
+          (b * e - a * f) / ad_bc
+        ];
+      }
+    });
+
+    ctx.save = function ctxSave() {
+      var old = this._transformMatrix;
+      this._transformStack.push(old);
+      this._transformMatrix = old.slice(0, 6);
+
+      this._originalSave();
+    };
+
+    ctx.restore = function ctxRestore() {
+      var prev = this._transformStack.pop();
+      if (prev) {
+        this._transformMatrix = prev;
+        this._originalRestore();
+      }
+    };
+
+    ctx.translate = function ctxTranslate(x, y) {
+      var m = this._transformMatrix;
+      m[4] = m[0] * x + m[2] * y + m[4];
+      m[5] = m[1] * x + m[3] * y + m[5];
+
+      this._originalTranslate(x, y);
+    };
+
+    ctx.scale = function ctxScale(x, y) {
+      var m = this._transformMatrix;
+      m[0] = m[0] * x;
+      m[1] = m[1] * x;
+      m[2] = m[2] * y;
+      m[3] = m[3] * y;
+
+      this._originalScale(x, y);
+    };
+
+    ctx.transform = function ctxTransform(a, b, c, d, e, f) {
+      var m = this._transformMatrix;
+      this._transformMatrix = [
+        m[0] * a + m[2] * b,
+        m[1] * a + m[3] * b,
+        m[0] * c + m[2] * d,
+        m[1] * c + m[3] * d,
+        m[0] * e + m[2] * f + m[4],
+        m[1] * e + m[3] * f + m[5]
+      ];
+
+      ctx._originalTransform(a, b, c, d, e, f);
+    };
+
+    ctx.setTransform = function ctxSetTransform(a, b, c, d, e, f) {
+      this._transformMatrix = [a, b, c, d, e, f];
+
+      ctx._originalSetTransform(a, b, c, d, e, f);
+    };
+
+    ctx.rotate = function ctxRotate(angle) {
+      var cosValue = Math.cos(angle);
+      var sinValue = Math.sin(angle);
+
+      var m = this._transformMatrix;
+      this._transformMatrix = [
+        m[0] * cosValue + m[2] * sinValue,
+        m[1] * cosValue + m[3] * sinValue,
+        m[0] * (-sinValue) + m[2] * cosValue,
+        m[1] * (-sinValue) + m[3] * cosValue,
+        m[4],
+        m[5]
+      ];
+
+      this._originalRotate(angle);
+    };
+  }
+}
+
+var CachedCanvases = (function CachedCanvasesClosure() {
+  function CachedCanvases() {
+    this.cache = Object.create(null);
+  }
+  CachedCanvases.prototype = {
+    getCanvas: function CachedCanvases_getCanvas(id, width, height,
+                                                 trackTransform) {
+      var canvasEntry;
+      if (this.cache[id] !== undefined) {
+        canvasEntry = this.cache[id];
+        canvasEntry.canvas.width = width;
+        canvasEntry.canvas.height = height;
+        // reset canvas transform for emulated mozCurrentTransform, if needed
+        canvasEntry.context.setTransform(1, 0, 0, 1, 0, 0);
+      } else {
+        var canvas = createScratchCanvas(width, height);
+        var ctx = canvas.getContext('2d');
+        if (trackTransform) {
+          addContextCurrentTransform(ctx);
+        }
+        this.cache[id] = canvasEntry = {canvas: canvas, context: ctx};
+      }
+      return canvasEntry;
+    },
+    clear: function () {
+      for (var id in this.cache) {
+        var canvasEntry = this.cache[id];
+        // Zeroing the width and height causes Firefox to release graphics
+        // resources immediately, which can greatly reduce memory consumption.
+        canvasEntry.canvas.width = 0;
+        canvasEntry.canvas.height = 0;
+        delete this.cache[id];
+      }
+    }
+  };
+  return CachedCanvases;
+})();
+
+function compileType3Glyph(imgData) {
+  var POINT_TO_PROCESS_LIMIT = 1000;
+
+  var width = imgData.width, height = imgData.height;
+  var i, j, j0, width1 = width + 1;
+  var points = new Uint8Array(width1 * (height + 1));
+  var POINT_TYPES =
+      new Uint8Array([0, 2, 4, 0, 1, 0, 5, 4, 8, 10, 0, 8, 0, 2, 1, 0]);
+
+  // decodes bit-packed mask data
+  var lineSize = (width + 7) & ~7, data0 = imgData.data;
+  var data = new Uint8Array(lineSize * height), pos = 0, ii;
+  for (i = 0, ii = data0.length; i < ii; i++) {
+    var mask = 128, elem = data0[i];
+    while (mask > 0) {
+      data[pos++] = (elem & mask) ? 0 : 255;
+      mask >>= 1;
+    }
+  }
+
+  // finding iteresting points: every point is located between mask pixels,
+  // so there will be points of the (width + 1)x(height + 1) grid. Every point
+  // will have flags assigned based on neighboring mask pixels:
+  //   4 | 8
+  //   --P--
+  //   2 | 1
+  // We are interested only in points with the flags:
+  //   - outside corners: 1, 2, 4, 8;
+  //   - inside corners: 7, 11, 13, 14;
+  //   - and, intersections: 5, 10.
+  var count = 0;
+  pos = 0;
+  if (data[pos] !== 0) {
+    points[0] = 1;
+    ++count;
+  }
+  for (j = 1; j < width; j++) {
+    if (data[pos] !== data[pos + 1]) {
+      points[j] = data[pos] ? 2 : 1;
+      ++count;
+    }
+    pos++;
+  }
+  if (data[pos] !== 0) {
+    points[j] = 2;
+    ++count;
+  }
+  for (i = 1; i < height; i++) {
+    pos = i * lineSize;
+    j0 = i * width1;
+    if (data[pos - lineSize] !== data[pos]) {
+      points[j0] = data[pos] ? 1 : 8;
+      ++count;
+    }
+    // 'sum' is the position of the current pixel configuration in the 'TYPES'
+    // array (in order 8-1-2-4, so we can use '>>2' to shift the column).
+    var sum = (data[pos] ? 4 : 0) + (data[pos - lineSize] ? 8 : 0);
+    for (j = 1; j < width; j++) {
+      sum = (sum >> 2) + (data[pos + 1] ? 4 : 0) +
+            (data[pos - lineSize + 1] ? 8 : 0);
+      if (POINT_TYPES[sum]) {
+        points[j0 + j] = POINT_TYPES[sum];
+        ++count;
+      }
+      pos++;
+    }
+    if (data[pos - lineSize] !== data[pos]) {
+      points[j0 + j] = data[pos] ? 2 : 4;
+      ++count;
+    }
+
+    if (count > POINT_TO_PROCESS_LIMIT) {
+      return null;
+    }
+  }
+
+  pos = lineSize * (height - 1);
+  j0 = i * width1;
+  if (data[pos] !== 0) {
+    points[j0] = 8;
+    ++count;
+  }
+  for (j = 1; j < width; j++) {
+    if (data[pos] !== data[pos + 1]) {
+      points[j0 + j] = data[pos] ? 4 : 8;
+      ++count;
+    }
+    pos++;
+  }
+  if (data[pos] !== 0) {
+    points[j0 + j] = 4;
+    ++count;
+  }
+  if (count > POINT_TO_PROCESS_LIMIT) {
+    return null;
+  }
+
+  // building outlines
+  var steps = new Int32Array([0, width1, -1, 0, -width1, 0, 0, 0, 1]);
+  var outlines = [];
+  for (i = 0; count && i <= height; i++) {
+    var p = i * width1;
+    var end = p + width;
+    while (p < end && !points[p]) {
+      p++;
+    }
+    if (p === end) {
+      continue;
+    }
+    var coords = [p % width1, i];
+
+    var type = points[p], p0 = p, pp;
+    do {
+      var step = steps[type];
+      do {
+        p += step;
+      } while (!points[p]);
+
+      pp = points[p];
+      if (pp !== 5 && pp !== 10) {
+        // set new direction
+        type = pp;
+        // delete mark
+        points[p] = 0;
+      } else { // type is 5 or 10, ie, a crossing
+        // set new direction
+        type = pp & ((0x33 * type) >> 4);
+        // set new type for "future hit"
+        points[p] &= (type >> 2 | type << 2);
+      }
+
+      coords.push(p % width1);
+      coords.push((p / width1) | 0);
+      --count;
+    } while (p0 !== p);
+    outlines.push(coords);
+    --i;
+  }
+
+  var drawOutline = function(c) {
+    c.save();
+    // the path shall be painted in [0..1]x[0..1] space
+    c.scale(1 / width, -1 / height);
+    c.translate(0, -height);
+    c.beginPath();
+    for (var i = 0, ii = outlines.length; i < ii; i++) {
+      var o = outlines[i];
+      c.moveTo(o[0], o[1]);
+      for (var j = 2, jj = o.length; j < jj; j += 2) {
+        c.lineTo(o[j], o[j+1]);
+      }
+    }
+    c.fill();
+    c.beginPath();
+    c.restore();
+  };
+
+  return drawOutline;
+}
+
+var CanvasExtraState = (function CanvasExtraStateClosure() {
+  function CanvasExtraState(old) {
+    // Are soft masks and alpha values shapes or opacities?
+    this.alphaIsShape = false;
+    this.fontSize = 0;
+    this.fontSizeScale = 1;
+    this.textMatrix = IDENTITY_MATRIX;
+    this.textMatrixScale = 1;
+    this.fontMatrix = FONT_IDENTITY_MATRIX;
+    this.leading = 0;
+    // Current point (in user coordinates)
+    this.x = 0;
+    this.y = 0;
+    // Start of text line (in text coordinates)
+    this.lineX = 0;
+    this.lineY = 0;
+    // Character and word spacing
+    this.charSpacing = 0;
+    this.wordSpacing = 0;
+    this.textHScale = 1;
+    this.textRenderingMode = TextRenderingMode.FILL;
+    this.textRise = 0;
+    // Default fore and background colors
+    this.fillColor = '#000000';
+    this.strokeColor = '#000000';
+    this.patternFill = false;
+    // Note: fill alpha applies to all non-stroking operations
+    this.fillAlpha = 1;
+    this.strokeAlpha = 1;
+    this.lineWidth = 1;
+    this.activeSMask = null;
+    this.resumeSMaskCtx = null; // nonclonable field (see the save method below)
+
+    this.old = old;
+  }
+
+  CanvasExtraState.prototype = {
+    clone: function CanvasExtraState_clone() {
+      return Object.create(this);
+    },
+    setCurrentPoint: function CanvasExtraState_setCurrentPoint(x, y) {
+      this.x = x;
+      this.y = y;
+    }
+  };
+  return CanvasExtraState;
+})();
+
+var CanvasGraphics = (function CanvasGraphicsClosure() {
+  // Defines the time the executeOperatorList is going to be executing
+  // before it stops and shedules a continue of execution.
+  var EXECUTION_TIME = 15;
+  // Defines the number of steps before checking the execution time
+  var EXECUTION_STEPS = 10;
+
+  function CanvasGraphics(canvasCtx, commonObjs, objs, imageLayer) {
+    this.ctx = canvasCtx;
+    this.current = new CanvasExtraState();
+    this.stateStack = [];
+    this.pendingClip = null;
+    this.pendingEOFill = false;
+    this.res = null;
+    this.xobjs = null;
+    this.commonObjs = commonObjs;
+    this.objs = objs;
+    this.imageLayer = imageLayer;
+    this.groupStack = [];
+    this.processingType3 = null;
+    // Patterns are painted relative to the initial page/form transform, see pdf
+    // spec 8.7.2 NOTE 1.
+    this.baseTransform = null;
+    this.baseTransformStack = [];
+    this.groupLevel = 0;
+    this.smaskStack = [];
+    this.smaskCounter = 0;
+    this.tempSMask = null;
+    this.cachedCanvases = new CachedCanvases();
+    if (canvasCtx) {
+      // NOTE: if mozCurrentTransform is polyfilled, then the current state of
+      // the transformation must already be set in canvasCtx._transformMatrix.
+      addContextCurrentTransform(canvasCtx);
+    }
+    this.cachedGetSinglePixelWidth = null;
+  }
+
+  function putBinaryImageData(ctx, imgData) {
+    if (typeof ImageData !== 'undefined' && imgData instanceof ImageData) {
+      ctx.putImageData(imgData, 0, 0);
+      return;
+    }
+
+    // Put the image data to the canvas in chunks, rather than putting the
+    // whole image at once.  This saves JS memory, because the ImageData object
+    // is smaller. It also possibly saves C++ memory within the implementation
+    // of putImageData(). (E.g. in Firefox we make two short-lived copies of
+    // the data passed to putImageData()). |n| shouldn't be too small, however,
+    // because too many putImageData() calls will slow things down.
+    //
+    // Note: as written, if the last chunk is partial, the putImageData() call
+    // will (conceptually) put pixels past the bounds of the canvas.  But
+    // that's ok; any such pixels are ignored.
+
+    var height = imgData.height, width = imgData.width;
+    var partialChunkHeight = height % FULL_CHUNK_HEIGHT;
+    var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT;
+    var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1;
+
+    var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT);
+    var srcPos = 0, destPos;
+    var src = imgData.data;
+    var dest = chunkImgData.data;
+    var i, j, thisChunkHeight, elemsInThisChunk;
+
+    // There are multiple forms in which the pixel data can be passed, and
+    // imgData.kind tells us which one this is.
+    if (imgData.kind === ImageKind.GRAYSCALE_1BPP) {
+      // Grayscale, 1 bit per pixel (i.e. black-and-white).
+      var srcLength = src.byteLength;
+      var dest32 = HasCanvasTypedArraysCached.value ?
+        new Uint32Array(dest.buffer) : new Uint32ArrayView(dest);
+      var dest32DataLength = dest32.length;
+      var fullSrcDiff = (width + 7) >> 3;
+      var white = 0xFFFFFFFF;
+      var black = (IsLittleEndianCached.value ||
+                   !HasCanvasTypedArraysCached.value) ? 0xFF000000 : 0x000000FF;
+      for (i = 0; i < totalChunks; i++) {
+        thisChunkHeight =
+          (i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight;
+        destPos = 0;
+        for (j = 0; j < thisChunkHeight; j++) {
+          var srcDiff = srcLength - srcPos;
+          var k = 0;
+          var kEnd = (srcDiff > fullSrcDiff) ? width : srcDiff * 8 - 7;
+          var kEndUnrolled = kEnd & ~7;
+          var mask = 0;
+          var srcByte = 0;
+          for (; k < kEndUnrolled; k += 8) {
+            srcByte = src[srcPos++];
+            dest32[destPos++] = (srcByte & 128) ? white : black;
+            dest32[destPos++] = (srcByte & 64) ? white : black;
+            dest32[destPos++] = (srcByte & 32) ? white : black;
+            dest32[destPos++] = (srcByte & 16) ? white : black;
+            dest32[destPos++] = (srcByte & 8) ? white : black;
+            dest32[destPos++] = (srcByte & 4) ? white : black;
+            dest32[destPos++] = (srcByte & 2) ? white : black;
+            dest32[destPos++] = (srcByte & 1) ? white : black;
+          }
+          for (; k < kEnd; k++) {
+             if (mask === 0) {
+               srcByte = src[srcPos++];
+               mask = 128;
+             }
+
+            dest32[destPos++] = (srcByte & mask) ? white : black;
+            mask >>= 1;
+          }
+        }
+        // We ran out of input. Make all remaining pixels transparent.
+        while (destPos < dest32DataLength) {
+          dest32[destPos++] = 0;
+        }
+
+        ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
+      }
+    } else if (imgData.kind === ImageKind.RGBA_32BPP) {
+      // RGBA, 32-bits per pixel.
+
+      j = 0;
+      elemsInThisChunk = width * FULL_CHUNK_HEIGHT * 4;
+      for (i = 0; i < fullChunks; i++) {
+        dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
+        srcPos += elemsInThisChunk;
+
+        ctx.putImageData(chunkImgData, 0, j);
+        j += FULL_CHUNK_HEIGHT;
+      }
+      if (i < totalChunks) {
+        elemsInThisChunk = width * partialChunkHeight * 4;
+        dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
+        ctx.putImageData(chunkImgData, 0, j);
+      }
+
+    } else if (imgData.kind === ImageKind.RGB_24BPP) {
+      // RGB, 24-bits per pixel.
+      thisChunkHeight = FULL_CHUNK_HEIGHT;
+      elemsInThisChunk = width * thisChunkHeight;
+      for (i = 0; i < totalChunks; i++) {
+        if (i >= fullChunks) {
+          thisChunkHeight = partialChunkHeight;
+          elemsInThisChunk = width * thisChunkHeight;
+        }
+
+        destPos = 0;
+        for (j = elemsInThisChunk; j--;) {
+          dest[destPos++] = src[srcPos++];
+          dest[destPos++] = src[srcPos++];
+          dest[destPos++] = src[srcPos++];
+          dest[destPos++] = 255;
+        }
+        ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
+      }
+    } else {
+      error('bad image kind: ' + imgData.kind);
+    }
+  }
+
+  function putBinaryImageMask(ctx, imgData) {
+    var height = imgData.height, width = imgData.width;
+    var partialChunkHeight = height % FULL_CHUNK_HEIGHT;
+    var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT;
+    var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1;
+
+    var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT);
+    var srcPos = 0;
+    var src = imgData.data;
+    var dest = chunkImgData.data;
+
+    for (var i = 0; i < totalChunks; i++) {
+      var thisChunkHeight =
+        (i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight;
+
+      // Expand the mask so it can be used by the canvas.  Any required
+      // inversion has already been handled.
+      var destPos = 3; // alpha component offset
+      for (var j = 0; j < thisChunkHeight; j++) {
+        var mask = 0;
+        for (var k = 0; k < width; k++) {
+          if (!mask) {
+            var elem = src[srcPos++];
+            mask = 128;
+          }
+          dest[destPos] = (elem & mask) ? 0 : 255;
+          destPos += 4;
+          mask >>= 1;
+        }
+      }
+      ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
+    }
+  }
+
+  function copyCtxState(sourceCtx, destCtx) {
+    var properties = ['strokeStyle', 'fillStyle', 'fillRule', 'globalAlpha',
+                      'lineWidth', 'lineCap', 'lineJoin', 'miterLimit',
+                      'globalCompositeOperation', 'font'];
+    for (var i = 0, ii = properties.length; i < ii; i++) {
+      var property = properties[i];
+      if (sourceCtx[property] !== undefined) {
+        destCtx[property] = sourceCtx[property];
+      }
+    }
+    if (sourceCtx.setLineDash !== undefined) {
+      destCtx.setLineDash(sourceCtx.getLineDash());
+      destCtx.lineDashOffset =  sourceCtx.lineDashOffset;
+    } else if (sourceCtx.mozDashOffset !== undefined) {
+      destCtx.mozDash = sourceCtx.mozDash;
+      destCtx.mozDashOffset = sourceCtx.mozDashOffset;
+    }
+  }
+
+  function composeSMaskBackdrop(bytes, r0, g0, b0) {
+    var length = bytes.length;
+    for (var i = 3; i < length; i += 4) {
+      var alpha = bytes[i];
+      if (alpha === 0) {
+        bytes[i - 3] = r0;
+        bytes[i - 2] = g0;
+        bytes[i - 1] = b0;
+      } else if (alpha < 255) {
+        var alpha_ = 255 - alpha;
+        bytes[i - 3] = (bytes[i - 3] * alpha + r0 * alpha_) >> 8;
+        bytes[i - 2] = (bytes[i - 2] * alpha + g0 * alpha_) >> 8;
+        bytes[i - 1] = (bytes[i - 1] * alpha + b0 * alpha_) >> 8;
+      }
+    }
+  }
+
+  function composeSMaskAlpha(maskData, layerData, transferMap) {
+    var length = maskData.length;
+    var scale = 1 / 255;
+    for (var i = 3; i < length; i += 4) {
+      var alpha = transferMap ? transferMap[maskData[i]] : maskData[i];
+      layerData[i] = (layerData[i] * alpha * scale) | 0;
+    }
+  }
+
+  function composeSMaskLuminosity(maskData, layerData, transferMap) {
+    var length = maskData.length;
+    for (var i = 3; i < length; i += 4) {
+      var y = (maskData[i - 3] * 77) +  // * 0.3 / 255 * 0x10000
+              (maskData[i - 2] * 152) + // * 0.59 ....
+              (maskData[i - 1] * 28);   // * 0.11 ....
+      layerData[i] = transferMap ?
+        (layerData[i] * transferMap[y >> 8]) >> 8 :
+        (layerData[i] * y) >> 16;
+    }
+  }
+
+  function genericComposeSMask(maskCtx, layerCtx, width, height,
+                               subtype, backdrop, transferMap) {
+    var hasBackdrop = !!backdrop;
+    var r0 = hasBackdrop ? backdrop[0] : 0;
+    var g0 = hasBackdrop ? backdrop[1] : 0;
+    var b0 = hasBackdrop ? backdrop[2] : 0;
+
+    var composeFn;
+    if (subtype === 'Luminosity') {
+      composeFn = composeSMaskLuminosity;
+    } else {
+      composeFn = composeSMaskAlpha;
+    }
+
+    // processing image in chunks to save memory
+    var PIXELS_TO_PROCESS = 1048576;
+    var chunkSize = Math.min(height, Math.ceil(PIXELS_TO_PROCESS / width));
+    for (var row = 0; row < height; row += chunkSize) {
+      var chunkHeight = Math.min(chunkSize, height - row);
+      var maskData = maskCtx.getImageData(0, row, width, chunkHeight);
+      var layerData = layerCtx.getImageData(0, row, width, chunkHeight);
+
+      if (hasBackdrop) {
+        composeSMaskBackdrop(maskData.data, r0, g0, b0);
+      }
+      composeFn(maskData.data, layerData.data, transferMap);
+
+      maskCtx.putImageData(layerData, 0, row);
+    }
+  }
+
+  function composeSMask(ctx, smask, layerCtx) {
+    var mask = smask.canvas;
+    var maskCtx = smask.context;
+
+    ctx.setTransform(smask.scaleX, 0, 0, smask.scaleY,
+                     smask.offsetX, smask.offsetY);
+
+    var backdrop = smask.backdrop || null;
+    if (!smask.transferMap && WebGLUtils.isEnabled) {
+      var composed = WebGLUtils.composeSMask(layerCtx.canvas, mask,
+        {subtype: smask.subtype, backdrop: backdrop});
+      ctx.setTransform(1, 0, 0, 1, 0, 0);
+      ctx.drawImage(composed, smask.offsetX, smask.offsetY);
+      return;
+    }
+    genericComposeSMask(maskCtx, layerCtx, mask.width, mask.height,
+                        smask.subtype, backdrop, smask.transferMap);
+    ctx.drawImage(mask, 0, 0);
+  }
+
+  var LINE_CAP_STYLES = ['butt', 'round', 'square'];
+  var LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];
+  var NORMAL_CLIP = {};
+  var EO_CLIP = {};
+
+  CanvasGraphics.prototype = {
+
+    beginDrawing: function CanvasGraphics_beginDrawing(transform, viewport,
+                                                       transparency) {
+      // For pdfs that use blend modes we have to clear the canvas else certain
+      // blend modes can look wrong since we'd be blending with a white
+      // backdrop. The problem with a transparent backdrop though is we then
+      // don't get sub pixel anti aliasing on text, creating temporary
+      // transparent canvas when we have blend modes.
+      var width = this.ctx.canvas.width;
+      var height = this.ctx.canvas.height;
+
+      this.ctx.save();
+      this.ctx.fillStyle = 'rgb(255, 255, 255)';
+      this.ctx.fillRect(0, 0, width, height);
+      this.ctx.restore();
+
+      if (transparency) {
+        var transparentCanvas = this.cachedCanvases.getCanvas(
+          'transparent', width, height, true);
+        this.compositeCtx = this.ctx;
+        this.transparentCanvas = transparentCanvas.canvas;
+        this.ctx = transparentCanvas.context;
+        this.ctx.save();
+        // The transform can be applied before rendering, transferring it to
+        // the new canvas.
+        this.ctx.transform.apply(this.ctx,
+                                 this.compositeCtx.mozCurrentTransform);
+      }
+
+      this.ctx.save();
+      if (transform) {
+        this.ctx.transform.apply(this.ctx, transform);
+      }
+      this.ctx.transform.apply(this.ctx, viewport.transform);
+
+      this.baseTransform = this.ctx.mozCurrentTransform.slice();
+
+      if (this.imageLayer) {
+        this.imageLayer.beginLayout();
+      }
+    },
+
+    executeOperatorList: function CanvasGraphics_executeOperatorList(
+                                    operatorList,
+                                    executionStartIdx, continueCallback,
+                                    stepper) {
+      var argsArray = operatorList.argsArray;
+      var fnArray = operatorList.fnArray;
+      var i = executionStartIdx || 0;
+      var argsArrayLen = argsArray.length;
+
+      // Sometimes the OperatorList to execute is empty.
+      if (argsArrayLen === i) {
+        return i;
+      }
+
+      var chunkOperations = (argsArrayLen - i > EXECUTION_STEPS &&
+                             typeof continueCallback === 'function');
+      var endTime = chunkOperations ? Date.now() + EXECUTION_TIME : 0;
+      var steps = 0;
+
+      var commonObjs = this.commonObjs;
+      var objs = this.objs;
+      var fnId;
+
+      while (true) {
+        if (stepper !== undefined && i === stepper.nextBreakPoint) {
+          stepper.breakIt(i, continueCallback);
+          return i;
+        }
+
+        fnId = fnArray[i];
+
+        if (fnId !== OPS.dependency) {
+          this[fnId].apply(this, argsArray[i]);
+        } else {
+          var deps = argsArray[i];
+          for (var n = 0, nn = deps.length; n < nn; n++) {
+            var depObjId = deps[n];
+            var common = depObjId[0] === 'g' && depObjId[1] === '_';
+            var objsPool = common ? commonObjs : objs;
+
+            // If the promise isn't resolved yet, add the continueCallback
+            // to the promise and bail out.
+            if (!objsPool.isResolved(depObjId)) {
+              objsPool.get(depObjId, continueCallback);
+              return i;
+            }
+          }
+        }
+
+        i++;
+
+        // If the entire operatorList was executed, stop as were done.
+        if (i === argsArrayLen) {
+          return i;
+        }
+
+        // If the execution took longer then a certain amount of time and
+        // `continueCallback` is specified, interrupt the execution.
+        if (chunkOperations && ++steps > EXECUTION_STEPS) {
+          if (Date.now() > endTime) {
+            continueCallback();
+            return i;
+          }
+          steps = 0;
+        }
+
+        // If the operatorList isn't executed completely yet OR the execution
+        // time was short enough, do another execution round.
+      }
+    },
+
+    endDrawing: function CanvasGraphics_endDrawing() {
+      // Finishing all opened operations such as SMask group painting.
+      if (this.current.activeSMask !== null) {
+        this.endSMaskGroup();
+      }
+
+      this.ctx.restore();
+
+      if (this.transparentCanvas) {
+        this.ctx = this.compositeCtx;
+        this.ctx.save();
+        this.ctx.setTransform(1, 0, 0, 1, 0, 0); // Avoid apply transform twice
+        this.ctx.drawImage(this.transparentCanvas, 0, 0);
+        this.ctx.restore();
+        this.transparentCanvas = null;
+      }
+
+      this.cachedCanvases.clear();
+      WebGLUtils.clear();
+
+      if (this.imageLayer) {
+        this.imageLayer.endLayout();
+      }
+    },
+
+    // Graphics state
+    setLineWidth: function CanvasGraphics_setLineWidth(width) {
+      this.current.lineWidth = width;
+      this.ctx.lineWidth = width;
+    },
+    setLineCap: function CanvasGraphics_setLineCap(style) {
+      this.ctx.lineCap = LINE_CAP_STYLES[style];
+    },
+    setLineJoin: function CanvasGraphics_setLineJoin(style) {
+      this.ctx.lineJoin = LINE_JOIN_STYLES[style];
+    },
+    setMiterLimit: function CanvasGraphics_setMiterLimit(limit) {
+      this.ctx.miterLimit = limit;
+    },
+    setDash: function CanvasGraphics_setDash(dashArray, dashPhase) {
+      var ctx = this.ctx;
+      if (ctx.setLineDash !== undefined) {
+        ctx.setLineDash(dashArray);
+        ctx.lineDashOffset = dashPhase;
+      } else {
+        ctx.mozDash = dashArray;
+        ctx.mozDashOffset = dashPhase;
+      }
+    },
+    setRenderingIntent: function CanvasGraphics_setRenderingIntent(intent) {
+      // Maybe if we one day fully support color spaces this will be important
+      // for now we can ignore.
+      // TODO set rendering intent?
+    },
+    setFlatness: function CanvasGraphics_setFlatness(flatness) {
+      // There's no way to control this with canvas, but we can safely ignore.
+      // TODO set flatness?
+    },
+    setGState: function CanvasGraphics_setGState(states) {
+      for (var i = 0, ii = states.length; i < ii; i++) {
+        var state = states[i];
+        var key = state[0];
+        var value = state[1];
+
+        switch (key) {
+          case 'LW':
+            this.setLineWidth(value);
+            break;
+          case 'LC':
+            this.setLineCap(value);
+            break;
+          case 'LJ':
+            this.setLineJoin(value);
+            break;
+          case 'ML':
+            this.setMiterLimit(value);
+            break;
+          case 'D':
+            this.setDash(value[0], value[1]);
+            break;
+          case 'RI':
+            this.setRenderingIntent(value);
+            break;
+          case 'FL':
+            this.setFlatness(value);
+            break;
+          case 'Font':
+            this.setFont(value[0], value[1]);
+            break;
+          case 'CA':
+            this.current.strokeAlpha = state[1];
+            break;
+          case 'ca':
+            this.current.fillAlpha = state[1];
+            this.ctx.globalAlpha = state[1];
+            break;
+          case 'BM':
+            if (value && value.name && (value.name !== 'Normal')) {
+              var mode = value.name.replace(/([A-Z])/g,
+                function(c) {
+                  return '-' + c.toLowerCase();
+                }
+              ).substring(1);
+              this.ctx.globalCompositeOperation = mode;
+              if (this.ctx.globalCompositeOperation !== mode) {
+                warn('globalCompositeOperation "' + mode +
+                     '" is not supported');
+              }
+            } else {
+              this.ctx.globalCompositeOperation = 'source-over';
+            }
+            break;
+          case 'SMask':
+            if (this.current.activeSMask) {
+              // If SMask is currrenly used, it needs to be suspended or
+              // finished. Suspend only makes sense when at least one save()
+              // was performed and state needs to be reverted on restore().
+              if (this.stateStack.length > 0 &&
+                  (this.stateStack[this.stateStack.length - 1].activeSMask ===
+                   this.current.activeSMask)) {
+                this.suspendSMaskGroup();
+              } else {
+                this.endSMaskGroup();
+              }
+            }
+            this.current.activeSMask = value ? this.tempSMask : null;
+            if (this.current.activeSMask) {
+              this.beginSMaskGroup();
+            }
+            this.tempSMask = null;
+            break;
+        }
+      }
+    },
+    beginSMaskGroup: function CanvasGraphics_beginSMaskGroup() {
+
+      var activeSMask = this.current.activeSMask;
+      var drawnWidth = activeSMask.canvas.width;
+      var drawnHeight = activeSMask.canvas.height;
+      var cacheId = 'smaskGroupAt' + this.groupLevel;
+      var scratchCanvas = this.cachedCanvases.getCanvas(
+        cacheId, drawnWidth, drawnHeight, true);
+
+      var currentCtx = this.ctx;
+      var currentTransform = currentCtx.mozCurrentTransform;
+      this.ctx.save();
+
+      var groupCtx = scratchCanvas.context;
+      groupCtx.scale(1 / activeSMask.scaleX, 1 / activeSMask.scaleY);
+      groupCtx.translate(-activeSMask.offsetX, -activeSMask.offsetY);
+      groupCtx.transform.apply(groupCtx, currentTransform);
+
+      activeSMask.startTransformInverse = groupCtx.mozCurrentTransformInverse;
+
+      copyCtxState(currentCtx, groupCtx);
+      this.ctx = groupCtx;
+      this.setGState([
+        ['BM', 'Normal'],
+        ['ca', 1],
+        ['CA', 1]
+      ]);
+      this.groupStack.push(currentCtx);
+      this.groupLevel++;
+    },
+    suspendSMaskGroup: function CanvasGraphics_endSMaskGroup() {
+      // Similar to endSMaskGroup, the intermediate canvas has to be composed
+      // and future ctx state restored.
+      var groupCtx = this.ctx;
+      this.groupLevel--;
+      this.ctx = this.groupStack.pop();
+
+      composeSMask(this.ctx, this.current.activeSMask, groupCtx);
+      this.ctx.restore();
+      this.ctx.save(); // save is needed since SMask will be resumed.
+      copyCtxState(groupCtx, this.ctx);
+
+      // Saving state for resuming.
+      this.current.resumeSMaskCtx = groupCtx;
+      // Transform was changed in the SMask canvas, reflecting this change on
+      // this.ctx.
+      var deltaTransform = Util.transform(
+        this.current.activeSMask.startTransformInverse,
+        groupCtx.mozCurrentTransform);
+      this.ctx.transform.apply(this.ctx, deltaTransform);
+
+      // SMask was composed, the results at the groupCtx can be cleared.
+      groupCtx.save();
+      groupCtx.setTransform(1, 0, 0, 1, 0, 0);
+      groupCtx.clearRect(0, 0, groupCtx.canvas.width, groupCtx.canvas.height);
+      groupCtx.restore();
+    },
+    resumeSMaskGroup: function CanvasGraphics_endSMaskGroup() {
+      // Resuming state saved by suspendSMaskGroup. We don't need to restore
+      // any groupCtx state since restore() command (the only caller) will do
+      // that for us. See also beginSMaskGroup.
+      var groupCtx = this.current.resumeSMaskCtx;
+      var currentCtx = this.ctx;
+      this.ctx = groupCtx;
+      this.groupStack.push(currentCtx);
+      this.groupLevel++;
+    },
+    endSMaskGroup: function CanvasGraphics_endSMaskGroup() {
+      var groupCtx = this.ctx;
+      this.groupLevel--;
+      this.ctx = this.groupStack.pop();
+
+      composeSMask(this.ctx, this.current.activeSMask, groupCtx);
+      this.ctx.restore();
+      copyCtxState(groupCtx, this.ctx);
+      // Transform was changed in the SMask canvas, reflecting this change on
+      // this.ctx.
+      var deltaTransform = Util.transform(
+        this.current.activeSMask.startTransformInverse,
+        groupCtx.mozCurrentTransform);
+      this.ctx.transform.apply(this.ctx, deltaTransform);
+    },
+    save: function CanvasGraphics_save() {
+      this.ctx.save();
+      var old = this.current;
+      this.stateStack.push(old);
+      this.current = old.clone();
+      this.current.resumeSMaskCtx = null;
+    },
+    restore: function CanvasGraphics_restore() {
+      // SMask was suspended, we just need to resume it.
+      if (this.current.resumeSMaskCtx) {
+        this.resumeSMaskGroup();
+      }
+      // SMask has to be finished once there is no states that are using the
+      // same SMask.
+      if (this.current.activeSMask !== null && (this.stateStack.length === 0 ||
+          this.stateStack[this.stateStack.length - 1].activeSMask !==
+          this.current.activeSMask)) {
+        this.endSMaskGroup();
+      }
+
+      if (this.stateStack.length !== 0) {
+        this.current = this.stateStack.pop();
+        this.ctx.restore();
+
+        // Ensure that the clipping path is reset (fixes issue6413.pdf).
+        this.pendingClip = null;
+
+        this.cachedGetSinglePixelWidth = null;
+      }
+    },
+    transform: function CanvasGraphics_transform(a, b, c, d, e, f) {
+      this.ctx.transform(a, b, c, d, e, f);
+
+      this.cachedGetSinglePixelWidth = null;
+    },
+
+    // Path
+    constructPath: function CanvasGraphics_constructPath(ops, args) {
+      var ctx = this.ctx;
+      var current = this.current;
+      var x = current.x, y = current.y;
+      for (var i = 0, j = 0, ii = ops.length; i < ii; i++) {
+        switch (ops[i] | 0) {
+          case OPS.rectangle:
+            x = args[j++];
+            y = args[j++];
+            var width = args[j++];
+            var height = args[j++];
+            if (width === 0) {
+              width = this.getSinglePixelWidth();
+            }
+            if (height === 0) {
+              height = this.getSinglePixelWidth();
+            }
+            var xw = x + width;
+            var yh = y + height;
+            this.ctx.moveTo(x, y);
+            this.ctx.lineTo(xw, y);
+            this.ctx.lineTo(xw, yh);
+            this.ctx.lineTo(x, yh);
+            this.ctx.lineTo(x, y);
+            this.ctx.closePath();
+            break;
+          case OPS.moveTo:
+            x = args[j++];
+            y = args[j++];
+            ctx.moveTo(x, y);
+            break;
+          case OPS.lineTo:
+            x = args[j++];
+            y = args[j++];
+            ctx.lineTo(x, y);
+            break;
+          case OPS.curveTo:
+            x = args[j + 4];
+            y = args[j + 5];
+            ctx.bezierCurveTo(args[j], args[j + 1], args[j + 2], args[j + 3],
+                              x, y);
+            j += 6;
+            break;
+          case OPS.curveTo2:
+            ctx.bezierCurveTo(x, y, args[j], args[j + 1],
+                              args[j + 2], args[j + 3]);
+            x = args[j + 2];
+            y = args[j + 3];
+            j += 4;
+            break;
+          case OPS.curveTo3:
+            x = args[j + 2];
+            y = args[j + 3];
+            ctx.bezierCurveTo(args[j], args[j + 1], x, y, x, y);
+            j += 4;
+            break;
+          case OPS.closePath:
+            ctx.closePath();
+            break;
+        }
+      }
+      current.setCurrentPoint(x, y);
+    },
+    closePath: function CanvasGraphics_closePath() {
+      this.ctx.closePath();
+    },
+    stroke: function CanvasGraphics_stroke(consumePath) {
+      consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
+      var ctx = this.ctx;
+      var strokeColor = this.current.strokeColor;
+      // Prevent drawing too thin lines by enforcing a minimum line width.
+      ctx.lineWidth = Math.max(this.getSinglePixelWidth() * MIN_WIDTH_FACTOR,
+                               this.current.lineWidth);
+      // For stroke we want to temporarily change the global alpha to the
+      // stroking alpha.
+      ctx.globalAlpha = this.current.strokeAlpha;
+      if (strokeColor && strokeColor.hasOwnProperty('type') &&
+          strokeColor.type === 'Pattern') {
+        // for patterns, we transform to pattern space, calculate
+        // the pattern, call stroke, and restore to user space
+        ctx.save();
+        ctx.strokeStyle = strokeColor.getPattern(ctx, this);
+        ctx.stroke();
+        ctx.restore();
+      } else {
+        ctx.stroke();
+      }
+      if (consumePath) {
+        this.consumePath();
+      }
+      // Restore the global alpha to the fill alpha
+      ctx.globalAlpha = this.current.fillAlpha;
+    },
+    closeStroke: function CanvasGraphics_closeStroke() {
+      this.closePath();
+      this.stroke();
+    },
+    fill: function CanvasGraphics_fill(consumePath) {
+      consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
+      var ctx = this.ctx;
+      var fillColor = this.current.fillColor;
+      var isPatternFill = this.current.patternFill;
+      var needRestore = false;
+
+      if (isPatternFill) {
+        ctx.save();
+        if (this.baseTransform) {
+          ctx.setTransform.apply(ctx, this.baseTransform);
+        }
+        ctx.fillStyle = fillColor.getPattern(ctx, this);
+        needRestore = true;
+      }
+
+      if (this.pendingEOFill) {
+        if (ctx.mozFillRule !== undefined) {
+          ctx.mozFillRule = 'evenodd';
+          ctx.fill();
+          ctx.mozFillRule = 'nonzero';
+        } else {
+          ctx.fill('evenodd');
+        }
+        this.pendingEOFill = false;
+      } else {
+        ctx.fill();
+      }
+
+      if (needRestore) {
+        ctx.restore();
+      }
+      if (consumePath) {
+        this.consumePath();
+      }
+    },
+    eoFill: function CanvasGraphics_eoFill() {
+      this.pendingEOFill = true;
+      this.fill();
+    },
+    fillStroke: function CanvasGraphics_fillStroke() {
+      this.fill(false);
+      this.stroke(false);
+
+      this.consumePath();
+    },
+    eoFillStroke: function CanvasGraphics_eoFillStroke() {
+      this.pendingEOFill = true;
+      this.fillStroke();
+    },
+    closeFillStroke: function CanvasGraphics_closeFillStroke() {
+      this.closePath();
+      this.fillStroke();
+    },
+    closeEOFillStroke: function CanvasGraphics_closeEOFillStroke() {
+      this.pendingEOFill = true;
+      this.closePath();
+      this.fillStroke();
+    },
+    endPath: function CanvasGraphics_endPath() {
+      this.consumePath();
+    },
+
+    // Clipping
+    clip: function CanvasGraphics_clip() {
+      this.pendingClip = NORMAL_CLIP;
+    },
+    eoClip: function CanvasGraphics_eoClip() {
+      this.pendingClip = EO_CLIP;
+    },
+
+    // Text
+    beginText: function CanvasGraphics_beginText() {
+      this.current.textMatrix = IDENTITY_MATRIX;
+      this.current.textMatrixScale = 1;
+      this.current.x = this.current.lineX = 0;
+      this.current.y = this.current.lineY = 0;
+    },
+    endText: function CanvasGraphics_endText() {
+      var paths = this.pendingTextPaths;
+      var ctx = this.ctx;
+      if (paths === undefined) {
+        ctx.beginPath();
+        return;
+      }
+
+      ctx.save();
+      ctx.beginPath();
+      for (var i = 0; i < paths.length; i++) {
+        var path = paths[i];
+        ctx.setTransform.apply(ctx, path.transform);
+        ctx.translate(path.x, path.y);
+        path.addToPath(ctx, path.fontSize);
+      }
+      ctx.restore();
+      ctx.clip();
+      ctx.beginPath();
+      delete this.pendingTextPaths;
+    },
+    setCharSpacing: function CanvasGraphics_setCharSpacing(spacing) {
+      this.current.charSpacing = spacing;
+    },
+    setWordSpacing: function CanvasGraphics_setWordSpacing(spacing) {
+      this.current.wordSpacing = spacing;
+    },
+    setHScale: function CanvasGraphics_setHScale(scale) {
+      this.current.textHScale = scale / 100;
+    },
+    setLeading: function CanvasGraphics_setLeading(leading) {
+      this.current.leading = -leading;
+    },
+    setFont: function CanvasGraphics_setFont(fontRefName, size) {
+      var fontObj = this.commonObjs.get(fontRefName);
+      var current = this.current;
+
+      if (!fontObj) {
+        error('Can\'t find font for ' + fontRefName);
+      }
+
+      current.fontMatrix = (fontObj.fontMatrix ?
+                            fontObj.fontMatrix : FONT_IDENTITY_MATRIX);
+
+      // A valid matrix needs all main diagonal elements to be non-zero
+      // This also ensures we bypass FF bugzilla bug #719844.
+      if (current.fontMatrix[0] === 0 ||
+          current.fontMatrix[3] === 0) {
+        warn('Invalid font matrix for font ' + fontRefName);
+      }
+
+      // The spec for Tf (setFont) says that 'size' specifies the font 'scale',
+      // and in some docs this can be negative (inverted x-y axes).
+      if (size < 0) {
+        size = -size;
+        current.fontDirection = -1;
+      } else {
+        current.fontDirection = 1;
+      }
+
+      this.current.font = fontObj;
+      this.current.fontSize = size;
+
+      if (fontObj.isType3Font) {
+        return; // we don't need ctx.font for Type3 fonts
+      }
+
+      var name = fontObj.loadedName || 'sans-serif';
+      var bold = fontObj.black ? (fontObj.bold ? '900' : 'bold') :
+                                 (fontObj.bold ? 'bold' : 'normal');
+
+      var italic = fontObj.italic ? 'italic' : 'normal';
+      var typeface = '"' + name + '", ' + fontObj.fallbackName;
+
+      // Some font backends cannot handle fonts below certain size.
+      // Keeping the font at minimal size and using the fontSizeScale to change
+      // the current transformation matrix before the fillText/strokeText.
+      // See https://bugzilla.mozilla.org/show_bug.cgi?id=726227
+      var browserFontSize = size < MIN_FONT_SIZE ? MIN_FONT_SIZE :
+                            size > MAX_FONT_SIZE ? MAX_FONT_SIZE : size;
+      this.current.fontSizeScale = size / browserFontSize;
+
+      var rule = italic + ' ' + bold + ' ' + browserFontSize + 'px ' + typeface;
+      this.ctx.font = rule;
+    },
+    setTextRenderingMode: function CanvasGraphics_setTextRenderingMode(mode) {
+      this.current.textRenderingMode = mode;
+    },
+    setTextRise: function CanvasGraphics_setTextRise(rise) {
+      this.current.textRise = rise;
+    },
+    moveText: function CanvasGraphics_moveText(x, y) {
+      this.current.x = this.current.lineX += x;
+      this.current.y = this.current.lineY += y;
+    },
+    setLeadingMoveText: function CanvasGraphics_setLeadingMoveText(x, y) {
+      this.setLeading(-y);
+      this.moveText(x, y);
+    },
+    setTextMatrix: function CanvasGraphics_setTextMatrix(a, b, c, d, e, f) {
+      this.current.textMatrix = [a, b, c, d, e, f];
+      this.current.textMatrixScale = Math.sqrt(a * a + b * b);
+
+      this.current.x = this.current.lineX = 0;
+      this.current.y = this.current.lineY = 0;
+    },
+    nextLine: function CanvasGraphics_nextLine() {
+      this.moveText(0, this.current.leading);
+    },
+
+    paintChar: function CanvasGraphics_paintChar(character, x, y) {
+      var ctx = this.ctx;
+      var current = this.current;
+      var font = current.font;
+      var textRenderingMode = current.textRenderingMode;
+      var fontSize = current.fontSize / current.fontSizeScale;
+      var fillStrokeMode = textRenderingMode &
+        TextRenderingMode.FILL_STROKE_MASK;
+      var isAddToPathSet = !!(textRenderingMode &
+        TextRenderingMode.ADD_TO_PATH_FLAG);
+
+      var addToPath;
+      if (font.disableFontFace || isAddToPathSet) {
+        addToPath = font.getPathGenerator(this.commonObjs, character);
+      }
+
+      if (font.disableFontFace) {
+        ctx.save();
+        ctx.translate(x, y);
+        ctx.beginPath();
+        addToPath(ctx, fontSize);
+        if (fillStrokeMode === TextRenderingMode.FILL ||
+            fillStrokeMode === TextRenderingMode.FILL_STROKE) {
+          ctx.fill();
+        }
+        if (fillStrokeMode === TextRenderingMode.STROKE ||
+            fillStrokeMode === TextRenderingMode.FILL_STROKE) {
+          ctx.stroke();
+        }
+        ctx.restore();
+      } else {
+        if (fillStrokeMode === TextRenderingMode.FILL ||
+            fillStrokeMode === TextRenderingMode.FILL_STROKE) {
+          ctx.fillText(character, x, y);
+        }
+        if (fillStrokeMode === TextRenderingMode.STROKE ||
+            fillStrokeMode === TextRenderingMode.FILL_STROKE) {
+          ctx.strokeText(character, x, y);
+        }
+      }
+
+      if (isAddToPathSet) {
+        var paths = this.pendingTextPaths || (this.pendingTextPaths = []);
+        paths.push({
+          transform: ctx.mozCurrentTransform,
+          x: x,
+          y: y,
+          fontSize: fontSize,
+          addToPath: addToPath
+        });
+      }
+    },
+
+    get isFontSubpixelAAEnabled() {
+      // Checks if anti-aliasing is enabled when scaled text is painted.
+      // On Windows GDI scaled fonts looks bad.
+      var ctx = document.createElement('canvas').getContext('2d');
+      ctx.scale(1.5, 1);
+      ctx.fillText('I', 0, 10);
+      var data = ctx.getImageData(0, 0, 10, 10).data;
+      var enabled = false;
+      for (var i = 3; i < data.length; i += 4) {
+        if (data[i] > 0 && data[i] < 255) {
+          enabled = true;
+          break;
+        }
+      }
+      return shadow(this, 'isFontSubpixelAAEnabled', enabled);
+    },
+
+    showText: function CanvasGraphics_showText(glyphs) {
+      var current = this.current;
+      var font = current.font;
+      if (font.isType3Font) {
+        return this.showType3Text(glyphs);
+      }
+
+      var fontSize = current.fontSize;
+      if (fontSize === 0) {
+        return;
+      }
+
+      var ctx = this.ctx;
+      var fontSizeScale = current.fontSizeScale;
+      var charSpacing = current.charSpacing;
+      var wordSpacing = current.wordSpacing;
+      var fontDirection = current.fontDirection;
+      var textHScale = current.textHScale * fontDirection;
+      var glyphsLength = glyphs.length;
+      var vertical = font.vertical;
+      var spacingDir = vertical ? 1 : -1;
+      var defaultVMetrics = font.defaultVMetrics;
+      var widthAdvanceScale = fontSize * current.fontMatrix[0];
+
+      var simpleFillText =
+        current.textRenderingMode === TextRenderingMode.FILL &&
+        !font.disableFontFace;
+
+      ctx.save();
+      ctx.transform.apply(ctx, current.textMatrix);
+      ctx.translate(current.x, current.y + current.textRise);
+
+      if (current.patternFill) {
+        // TODO: Some shading patterns are not applied correctly to text,
+        //       e.g. issues 3988 and 5432, and ShowText-ShadingPattern.pdf.
+        ctx.fillStyle = current.fillColor.getPattern(ctx, this);
+      }
+
+      if (fontDirection > 0) {
+        ctx.scale(textHScale, -1);
+      } else {
+        ctx.scale(textHScale, 1);
+      }
+
+      var lineWidth = current.lineWidth;
+      var scale = current.textMatrixScale;
+      if (scale === 0 || lineWidth === 0) {
+        var fillStrokeMode = current.textRenderingMode &
+          TextRenderingMode.FILL_STROKE_MASK;
+        if (fillStrokeMode === TextRenderingMode.STROKE ||
+            fillStrokeMode === TextRenderingMode.FILL_STROKE) {
+          this.cachedGetSinglePixelWidth = null;
+          lineWidth = this.getSinglePixelWidth() * MIN_WIDTH_FACTOR;
+        }
+      } else {
+        lineWidth /= scale;
+      }
+
+      if (fontSizeScale !== 1.0) {
+        ctx.scale(fontSizeScale, fontSizeScale);
+        lineWidth /= fontSizeScale;
+      }
+
+      ctx.lineWidth = lineWidth;
+
+      var x = 0, i;
+      for (i = 0; i < glyphsLength; ++i) {
+        var glyph = glyphs[i];
+        if (isNum(glyph)) {
+          x += spacingDir * glyph * fontSize / 1000;
+          continue;
+        }
+
+        var restoreNeeded = false;
+        var spacing = (glyph.isSpace ? wordSpacing : 0) + charSpacing;
+        var character = glyph.fontChar;
+        var accent = glyph.accent;
+        var scaledX, scaledY, scaledAccentX, scaledAccentY;
+        var width = glyph.width;
+        if (vertical) {
+          var vmetric, vx, vy;
+          vmetric = glyph.vmetric || defaultVMetrics;
+          vx = glyph.vmetric ? vmetric[1] : width * 0.5;
+          vx = -vx * widthAdvanceScale;
+          vy = vmetric[2] * widthAdvanceScale;
+
+          width = vmetric ? -vmetric[0] : width;
+          scaledX = vx / fontSizeScale;
+          scaledY = (x + vy) / fontSizeScale;
+        } else {
+          scaledX = x / fontSizeScale;
+          scaledY = 0;
+        }
+
+        if (font.remeasure && width > 0) {
+          // Some standard fonts may not have the exact width: rescale per
+          // character if measured width is greater than expected glyph width
+          // and subpixel-aa is enabled, otherwise just center the glyph.
+          var measuredWidth = ctx.measureText(character).width * 1000 /
+            fontSize * fontSizeScale;
+          if (width < measuredWidth && this.isFontSubpixelAAEnabled) {
+            var characterScaleX = width / measuredWidth;
+            restoreNeeded = true;
+            ctx.save();
+            ctx.scale(characterScaleX, 1);
+            scaledX /= characterScaleX;
+          } else if (width !== measuredWidth) {
+            scaledX += (width - measuredWidth) / 2000 *
+              fontSize / fontSizeScale;
+          }
+        }
+
+        // Only attempt to draw the glyph if it is actually in the embedded font
+        // file or if there isn't a font file so the fallback font is shown.
+        if (glyph.isInFont || font.missingFile) {
+          if (simpleFillText && !accent) {
+            // common case
+            ctx.fillText(character, scaledX, scaledY);
+          } else {
+            this.paintChar(character, scaledX, scaledY);
+            if (accent) {
+              scaledAccentX = scaledX + accent.offset.x / fontSizeScale;
+              scaledAccentY = scaledY - accent.offset.y / fontSizeScale;
+              this.paintChar(accent.fontChar, scaledAccentX, scaledAccentY);
+            }
+          }
+        }
+
+        var charWidth = width * widthAdvanceScale + spacing * fontDirection;
+        x += charWidth;
+
+        if (restoreNeeded) {
+          ctx.restore();
+        }
+      }
+      if (vertical) {
+        current.y -= x * textHScale;
+      } else {
+        current.x += x * textHScale;
+      }
+      ctx.restore();
+    },
+
+    showType3Text: function CanvasGraphics_showType3Text(glyphs) {
+      // Type3 fonts - each glyph is a "mini-PDF"
+      var ctx = this.ctx;
+      var current = this.current;
+      var font = current.font;
+      var fontSize = current.fontSize;
+      var fontDirection = current.fontDirection;
+      var spacingDir = font.vertical ? 1 : -1;
+      var charSpacing = current.charSpacing;
+      var wordSpacing = current.wordSpacing;
+      var textHScale = current.textHScale * fontDirection;
+      var fontMatrix = current.fontMatrix || FONT_IDENTITY_MATRIX;
+      var glyphsLength = glyphs.length;
+      var isTextInvisible =
+        current.textRenderingMode === TextRenderingMode.INVISIBLE;
+      var i, glyph, width, spacingLength;
+
+      if (isTextInvisible || fontSize === 0) {
+        return;
+      }
+      this.cachedGetSinglePixelWidth = null;
+
+      ctx.save();
+      ctx.transform.apply(ctx, current.textMatrix);
+      ctx.translate(current.x, current.y);
+
+      ctx.scale(textHScale, fontDirection);
+
+      for (i = 0; i < glyphsLength; ++i) {
+        glyph = glyphs[i];
+        if (isNum(glyph)) {
+          spacingLength = spacingDir * glyph * fontSize / 1000;
+          this.ctx.translate(spacingLength, 0);
+          current.x += spacingLength * textHScale;
+          continue;
+        }
+
+        var spacing = (glyph.isSpace ? wordSpacing : 0) + charSpacing;
+        var operatorList = font.charProcOperatorList[glyph.operatorListId];
+        if (!operatorList) {
+          warn('Type3 character \"' + glyph.operatorListId +
+               '\" is not available');
+          continue;
+        }
+        this.processingType3 = glyph;
+        this.save();
+        ctx.scale(fontSize, fontSize);
+        ctx.transform.apply(ctx, fontMatrix);
+        this.executeOperatorList(operatorList);
+        this.restore();
+
+        var transformed = Util.applyTransform([glyph.width, 0], fontMatrix);
+        width = transformed[0] * fontSize + spacing;
+
+        ctx.translate(width, 0);
+        current.x += width * textHScale;
+      }
+      ctx.restore();
+      this.processingType3 = null;
+    },
+
+    // Type3 fonts
+    setCharWidth: function CanvasGraphics_setCharWidth(xWidth, yWidth) {
+      // We can safely ignore this since the width should be the same
+      // as the width in the Widths array.
+    },
+    setCharWidthAndBounds: function CanvasGraphics_setCharWidthAndBounds(xWidth,
+                                                                        yWidth,
+                                                                        llx,
+                                                                        lly,
+                                                                        urx,
+                                                                        ury) {
+      // TODO According to the spec we're also suppose to ignore any operators
+      // that set color or include images while processing this type3 font.
+      this.ctx.rect(llx, lly, urx - llx, ury - lly);
+      this.clip();
+      this.endPath();
+    },
+
+    // Color
+    getColorN_Pattern: function CanvasGraphics_getColorN_Pattern(IR) {
+      var pattern;
+      if (IR[0] === 'TilingPattern') {
+        var color = IR[1];
+        var baseTransform = this.baseTransform ||
+                            this.ctx.mozCurrentTransform.slice();
+        var self = this;
+        var canvasGraphicsFactory = {
+          createCanvasGraphics: function (ctx) {
+            return new CanvasGraphics(ctx, self.commonObjs, self.objs);
+          }
+        };
+        pattern = new TilingPattern(IR, color, this.ctx, canvasGraphicsFactory,
+                                    baseTransform);
+      } else {
+        pattern = getShadingPatternFromIR(IR);
+      }
+      return pattern;
+    },
+    setStrokeColorN: function CanvasGraphics_setStrokeColorN(/*...*/) {
+      this.current.strokeColor = this.getColorN_Pattern(arguments);
+    },
+    setFillColorN: function CanvasGraphics_setFillColorN(/*...*/) {
+      this.current.fillColor = this.getColorN_Pattern(arguments);
+      this.current.patternFill = true;
+    },
+    setStrokeRGBColor: function CanvasGraphics_setStrokeRGBColor(r, g, b) {
+      var color = Util.makeCssRgb(r, g, b);
+      this.ctx.strokeStyle = color;
+      this.current.strokeColor = color;
+    },
+    setFillRGBColor: function CanvasGraphics_setFillRGBColor(r, g, b) {
+      var color = Util.makeCssRgb(r, g, b);
+      this.ctx.fillStyle = color;
+      this.current.fillColor = color;
+      this.current.patternFill = false;
+    },
+
+    shadingFill: function CanvasGraphics_shadingFill(patternIR) {
+      var ctx = this.ctx;
+
+      this.save();
+      var pattern = getShadingPatternFromIR(patternIR);
+      ctx.fillStyle = pattern.getPattern(ctx, this, true);
+
+      var inv = ctx.mozCurrentTransformInverse;
+      if (inv) {
+        var canvas = ctx.canvas;
+        var width = canvas.width;
+        var height = canvas.height;
+
+        var bl = Util.applyTransform([0, 0], inv);
+        var br = Util.applyTransform([0, height], inv);
+        var ul = Util.applyTransform([width, 0], inv);
+        var ur = Util.applyTransform([width, height], inv);
+
+        var x0 = Math.min(bl[0], br[0], ul[0], ur[0]);
+        var y0 = Math.min(bl[1], br[1], ul[1], ur[1]);
+        var x1 = Math.max(bl[0], br[0], ul[0], ur[0]);
+        var y1 = Math.max(bl[1], br[1], ul[1], ur[1]);
+
+        this.ctx.fillRect(x0, y0, x1 - x0, y1 - y0);
+      } else {
+        // HACK to draw the gradient onto an infinite rectangle.
+        // PDF gradients are drawn across the entire image while
+        // Canvas only allows gradients to be drawn in a rectangle
+        // The following bug should allow us to remove this.
+        // https://bugzilla.mozilla.org/show_bug.cgi?id=664884
+
+        this.ctx.fillRect(-1e10, -1e10, 2e10, 2e10);
+      }
+
+      this.restore();
+    },
+
+    // Images
+    beginInlineImage: function CanvasGraphics_beginInlineImage() {
+      error('Should not call beginInlineImage');
+    },
+    beginImageData: function CanvasGraphics_beginImageData() {
+      error('Should not call beginImageData');
+    },
+
+    paintFormXObjectBegin: function CanvasGraphics_paintFormXObjectBegin(matrix,
+                                                                        bbox) {
+      this.save();
+      this.baseTransformStack.push(this.baseTransform);
+
+      if (isArray(matrix) && 6 === matrix.length) {
+        this.transform.apply(this, matrix);
+      }
+
+      this.baseTransform = this.ctx.mozCurrentTransform;
+
+      if (isArray(bbox) && 4 === bbox.length) {
+        var width = bbox[2] - bbox[0];
+        var height = bbox[3] - bbox[1];
+        this.ctx.rect(bbox[0], bbox[1], width, height);
+        this.clip();
+        this.endPath();
+      }
+    },
+
+    paintFormXObjectEnd: function CanvasGraphics_paintFormXObjectEnd() {
+      this.restore();
+      this.baseTransform = this.baseTransformStack.pop();
+    },
+
+    beginGroup: function CanvasGraphics_beginGroup(group) {
+      this.save();
+      var currentCtx = this.ctx;
+      // TODO non-isolated groups - according to Rik at adobe non-isolated
+      // group results aren't usually that different and they even have tools
+      // that ignore this setting. Notes from Rik on implmenting:
+      // - When you encounter an transparency group, create a new canvas with
+      // the dimensions of the bbox
+      // - copy the content from the previous canvas to the new canvas
+      // - draw as usual
+      // - remove the backdrop alpha:
+      // alphaNew = 1 - (1 - alpha)/(1 - alphaBackdrop) with 'alpha' the alpha
+      // value of your transparency group and 'alphaBackdrop' the alpha of the
+      // backdrop
+      // - remove background color:
+      // colorNew = color - alphaNew *colorBackdrop /(1 - alphaNew)
+      if (!group.isolated) {
+        info('TODO: Support non-isolated groups.');
+      }
+
+      // TODO knockout - supposedly possible with the clever use of compositing
+      // modes.
+      if (group.knockout) {
+        warn('Knockout groups not supported.');
+      }
+
+      var currentTransform = currentCtx.mozCurrentTransform;
+      if (group.matrix) {
+        currentCtx.transform.apply(currentCtx, group.matrix);
+      }
+      assert(group.bbox, 'Bounding box is required.');
+
+      // Based on the current transform figure out how big the bounding box
+      // will actually be.
+      var bounds = Util.getAxialAlignedBoundingBox(
+                    group.bbox,
+                    currentCtx.mozCurrentTransform);
+      // Clip the bounding box to the current canvas.
+      var canvasBounds = [0,
+                          0,
+                          currentCtx.canvas.width,
+                          currentCtx.canvas.height];
+      bounds = Util.intersect(bounds, canvasBounds) || [0, 0, 0, 0];
+      // Use ceil in case we're between sizes so we don't create canvas that is
+      // too small and make the canvas at least 1x1 pixels.
+      var offsetX = Math.floor(bounds[0]);
+      var offsetY = Math.floor(bounds[1]);
+      var drawnWidth = Math.max(Math.ceil(bounds[2]) - offsetX, 1);
+      var drawnHeight = Math.max(Math.ceil(bounds[3]) - offsetY, 1);
+      var scaleX = 1, scaleY = 1;
+      if (drawnWidth > MAX_GROUP_SIZE) {
+        scaleX = drawnWidth / MAX_GROUP_SIZE;
+        drawnWidth = MAX_GROUP_SIZE;
+      }
+      if (drawnHeight > MAX_GROUP_SIZE) {
+        scaleY = drawnHeight / MAX_GROUP_SIZE;
+        drawnHeight = MAX_GROUP_SIZE;
+      }
+
+      var cacheId = 'groupAt' + this.groupLevel;
+      if (group.smask) {
+        // Using two cache entries is case if masks are used one after another.
+        cacheId +=  '_smask_' + ((this.smaskCounter++) % 2);
+      }
+      var scratchCanvas = this.cachedCanvases.getCanvas(
+        cacheId, drawnWidth, drawnHeight, true);
+      var groupCtx = scratchCanvas.context;
+
+      // Since we created a new canvas that is just the size of the bounding box
+      // we have to translate the group ctx.
+      groupCtx.scale(1 / scaleX, 1 / scaleY);
+      groupCtx.translate(-offsetX, -offsetY);
+      groupCtx.transform.apply(groupCtx, currentTransform);
+
+      if (group.smask) {
+        // Saving state and cached mask to be used in setGState.
+        this.smaskStack.push({
+          canvas: scratchCanvas.canvas,
+          context: groupCtx,
+          offsetX: offsetX,
+          offsetY: offsetY,
+          scaleX: scaleX,
+          scaleY: scaleY,
+          subtype: group.smask.subtype,
+          backdrop: group.smask.backdrop,
+          transferMap: group.smask.transferMap || null,
+          startTransformInverse: null, // used during suspend operation
+        });
+      } else {
+        // Setup the current ctx so when the group is popped we draw it at the
+        // right location.
+        currentCtx.setTransform(1, 0, 0, 1, 0, 0);
+        currentCtx.translate(offsetX, offsetY);
+        currentCtx.scale(scaleX, scaleY);
+      }
+      // The transparency group inherits all off the current graphics state
+      // except the blend mode, soft mask, and alpha constants.
+      copyCtxState(currentCtx, groupCtx);
+      this.ctx = groupCtx;
+      this.setGState([
+        ['BM', 'Normal'],
+        ['ca', 1],
+        ['CA', 1]
+      ]);
+      this.groupStack.push(currentCtx);
+      this.groupLevel++;
+
+      // Reseting mask state, masks will be applied on restore of the group.
+      this.current.activeSMask = null;
+    },
+
+    endGroup: function CanvasGraphics_endGroup(group) {
+      this.groupLevel--;
+      var groupCtx = this.ctx;
+      this.ctx = this.groupStack.pop();
+      // Turn off image smoothing to avoid sub pixel interpolation which can
+      // look kind of blurry for some pdfs.
+      if (this.ctx.imageSmoothingEnabled !== undefined) {
+        this.ctx.imageSmoothingEnabled = false;
+      } else {
+        this.ctx.mozImageSmoothingEnabled = false;
+      }
+      if (group.smask) {
+        this.tempSMask = this.smaskStack.pop();
+      } else {
+        this.ctx.drawImage(groupCtx.canvas, 0, 0);
+      }
+      this.restore();
+    },
+
+    beginAnnotations: function CanvasGraphics_beginAnnotations() {
+      this.save();
+      this.current = new CanvasExtraState();
+
+      if (this.baseTransform) {
+        this.ctx.setTransform.apply(this.ctx, this.baseTransform);
+      }
+    },
+
+    endAnnotations: function CanvasGraphics_endAnnotations() {
+      this.restore();
+    },
+
+    beginAnnotation: function CanvasGraphics_beginAnnotation(rect, transform,
+                                                             matrix) {
+      this.save();
+
+      if (isArray(rect) && 4 === rect.length) {
+        var width = rect[2] - rect[0];
+        var height = rect[3] - rect[1];
+        this.ctx.rect(rect[0], rect[1], width, height);
+        this.clip();
+        this.endPath();
+      }
+
+      this.transform.apply(this, transform);
+      this.transform.apply(this, matrix);
+    },
+
+    endAnnotation: function CanvasGraphics_endAnnotation() {
+      this.restore();
+    },
+
+    paintJpegXObject: function CanvasGraphics_paintJpegXObject(objId, w, h) {
+      var domImage = this.objs.get(objId);
+      if (!domImage) {
+        warn('Dependent image isn\'t ready yet');
+        return;
+      }
+
+      this.save();
+
+      var ctx = this.ctx;
+      // scale the image to the unit square
+      ctx.scale(1 / w, -1 / h);
+
+      ctx.drawImage(domImage, 0, 0, domImage.width, domImage.height,
+                    0, -h, w, h);
+      if (this.imageLayer) {
+        var currentTransform = ctx.mozCurrentTransformInverse;
+        var position = this.getCanvasPosition(0, 0);
+        this.imageLayer.appendImage({
+          objId: objId,
+          left: position[0],
+          top: position[1],
+          width: w / currentTransform[0],
+          height: h / currentTransform[3]
+        });
+      }
+      this.restore();
+    },
+
+    paintImageMaskXObject: function CanvasGraphics_paintImageMaskXObject(img) {
+      var ctx = this.ctx;
+      var width = img.width, height = img.height;
+      var fillColor = this.current.fillColor;
+      var isPatternFill = this.current.patternFill;
+
+      var glyph = this.processingType3;
+
+      if (COMPILE_TYPE3_GLYPHS && glyph && glyph.compiled === undefined) {
+        if (width <= MAX_SIZE_TO_COMPILE && height <= MAX_SIZE_TO_COMPILE) {
+          glyph.compiled =
+            compileType3Glyph({data: img.data, width: width, height: height});
+        } else {
+          glyph.compiled = null;
+        }
+      }
+
+      if (glyph && glyph.compiled) {
+        glyph.compiled(ctx);
+        return;
+      }
+
+      var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas',
+                                                     width, height);
+      var maskCtx = maskCanvas.context;
+      maskCtx.save();
+
+      putBinaryImageMask(maskCtx, img);
+
+      maskCtx.globalCompositeOperation = 'source-in';
+
+      maskCtx.fillStyle = isPatternFill ?
+                          fillColor.getPattern(maskCtx, this) : fillColor;
+      maskCtx.fillRect(0, 0, width, height);
+
+      maskCtx.restore();
+
+      this.paintInlineImageXObject(maskCanvas.canvas);
+    },
+
+    paintImageMaskXObjectRepeat:
+      function CanvasGraphics_paintImageMaskXObjectRepeat(imgData, scaleX,
+                                                          scaleY, positions) {
+      var width = imgData.width;
+      var height = imgData.height;
+      var fillColor = this.current.fillColor;
+      var isPatternFill = this.current.patternFill;
+
+      var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas',
+                                                     width, height);
+      var maskCtx = maskCanvas.context;
+      maskCtx.save();
+
+      putBinaryImageMask(maskCtx, imgData);
+
+      maskCtx.globalCompositeOperation = 'source-in';
+
+      maskCtx.fillStyle = isPatternFill ?
+                          fillColor.getPattern(maskCtx, this) : fillColor;
+      maskCtx.fillRect(0, 0, width, height);
+
+      maskCtx.restore();
+
+      var ctx = this.ctx;
+      for (var i = 0, ii = positions.length; i < ii; i += 2) {
+        ctx.save();
+        ctx.transform(scaleX, 0, 0, scaleY, positions[i], positions[i + 1]);
+        ctx.scale(1, -1);
+        ctx.drawImage(maskCanvas.canvas, 0, 0, width, height,
+          0, -1, 1, 1);
+        ctx.restore();
+      }
+    },
+
+    paintImageMaskXObjectGroup:
+      function CanvasGraphics_paintImageMaskXObjectGroup(images) {
+      var ctx = this.ctx;
+
+      var fillColor = this.current.fillColor;
+      var isPatternFill = this.current.patternFill;
+      for (var i = 0, ii = images.length; i < ii; i++) {
+        var image = images[i];
+        var width = image.width, height = image.height;
+
+        var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas',
+                                                       width, height);
+        var maskCtx = maskCanvas.context;
+        maskCtx.save();
+
+        putBinaryImageMask(maskCtx, image);
+
+        maskCtx.globalCompositeOperation = 'source-in';
+
+        maskCtx.fillStyle = isPatternFill ?
+                            fillColor.getPattern(maskCtx, this) : fillColor;
+        maskCtx.fillRect(0, 0, width, height);
+
+        maskCtx.restore();
+
+        ctx.save();
+        ctx.transform.apply(ctx, image.transform);
+        ctx.scale(1, -1);
+        ctx.drawImage(maskCanvas.canvas, 0, 0, width, height,
+                      0, -1, 1, 1);
+        ctx.restore();
+      }
+    },
+
+    paintImageXObject: function CanvasGraphics_paintImageXObject(objId) {
+      var imgData = this.objs.get(objId);
+      if (!imgData) {
+        warn('Dependent image isn\'t ready yet');
+        return;
+      }
+
+      this.paintInlineImageXObject(imgData);
+    },
+
+    paintImageXObjectRepeat:
+      function CanvasGraphics_paintImageXObjectRepeat(objId, scaleX, scaleY,
+                                                          positions) {
+      var imgData = this.objs.get(objId);
+      if (!imgData) {
+        warn('Dependent image isn\'t ready yet');
+        return;
+      }
+
+      var width = imgData.width;
+      var height = imgData.height;
+      var map = [];
+      for (var i = 0, ii = positions.length; i < ii; i += 2) {
+        map.push({transform: [scaleX, 0, 0, scaleY, positions[i],
+                 positions[i + 1]], x: 0, y: 0, w: width, h: height});
+      }
+      this.paintInlineImageXObjectGroup(imgData, map);
+    },
+
+    paintInlineImageXObject:
+      function CanvasGraphics_paintInlineImageXObject(imgData) {
+      var width = imgData.width;
+      var height = imgData.height;
+      var ctx = this.ctx;
+
+      this.save();
+      // scale the image to the unit square
+      ctx.scale(1 / width, -1 / height);
+
+      var currentTransform = ctx.mozCurrentTransformInverse;
+      var a = currentTransform[0], b = currentTransform[1];
+      var widthScale = Math.max(Math.sqrt(a * a + b * b), 1);
+      var c = currentTransform[2], d = currentTransform[3];
+      var heightScale = Math.max(Math.sqrt(c * c + d * d), 1);
+
+      var imgToPaint, tmpCanvas;
+      // instanceof HTMLElement does not work in jsdom node.js module
+      if (imgData instanceof HTMLElement || !imgData.data) {
+        imgToPaint = imgData;
+      } else {
+        tmpCanvas = this.cachedCanvases.getCanvas('inlineImage',
+                                                  width, height);
+        var tmpCtx = tmpCanvas.context;
+        putBinaryImageData(tmpCtx, imgData);
+        imgToPaint = tmpCanvas.canvas;
+      }
+
+      var paintWidth = width, paintHeight = height;
+      var tmpCanvasId = 'prescale1';
+      // Vertial or horizontal scaling shall not be more than 2 to not loose the
+      // pixels during drawImage operation, painting on the temporary canvas(es)
+      // that are twice smaller in size
+      while ((widthScale > 2 && paintWidth > 1) ||
+             (heightScale > 2 && paintHeight > 1)) {
+        var newWidth = paintWidth, newHeight = paintHeight;
+        if (widthScale > 2 && paintWidth > 1) {
+          newWidth = Math.ceil(paintWidth / 2);
+          widthScale /= paintWidth / newWidth;
+        }
+        if (heightScale > 2 && paintHeight > 1) {
+          newHeight = Math.ceil(paintHeight / 2);
+          heightScale /= paintHeight / newHeight;
+        }
+        tmpCanvas = this.cachedCanvases.getCanvas(tmpCanvasId,
+                                                  newWidth, newHeight);
+        tmpCtx = tmpCanvas.context;
+        tmpCtx.clearRect(0, 0, newWidth, newHeight);
+        tmpCtx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight,
+                                     0, 0, newWidth, newHeight);
+        imgToPaint = tmpCanvas.canvas;
+        paintWidth = newWidth;
+        paintHeight = newHeight;
+        tmpCanvasId = tmpCanvasId === 'prescale1' ? 'prescale2' : 'prescale1';
+      }
+      ctx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight,
+                                0, -height, width, height);
+
+      if (this.imageLayer) {
+        var position = this.getCanvasPosition(0, -height);
+        this.imageLayer.appendImage({
+          imgData: imgData,
+          left: position[0],
+          top: position[1],
+          width: width / currentTransform[0],
+          height: height / currentTransform[3]
+        });
+      }
+      this.restore();
+    },
+
+    paintInlineImageXObjectGroup:
+      function CanvasGraphics_paintInlineImageXObjectGroup(imgData, map) {
+      var ctx = this.ctx;
+      var w = imgData.width;
+      var h = imgData.height;
+
+      var tmpCanvas = this.cachedCanvases.getCanvas('inlineImage', w, h);
+      var tmpCtx = tmpCanvas.context;
+      putBinaryImageData(tmpCtx, imgData);
+
+      for (var i = 0, ii = map.length; i < ii; i++) {
+        var entry = map[i];
+        ctx.save();
+        ctx.transform.apply(ctx, entry.transform);
+        ctx.scale(1, -1);
+        ctx.drawImage(tmpCanvas.canvas, entry.x, entry.y, entry.w, entry.h,
+                      0, -1, 1, 1);
+        if (this.imageLayer) {
+          var position = this.getCanvasPosition(entry.x, entry.y);
+          this.imageLayer.appendImage({
+            imgData: imgData,
+            left: position[0],
+            top: position[1],
+            width: w,
+            height: h
+          });
+        }
+        ctx.restore();
+      }
+    },
+
+    paintSolidColorImageMask:
+      function CanvasGraphics_paintSolidColorImageMask() {
+        this.ctx.fillRect(0, 0, 1, 1);
+    },
+
+    paintXObject: function CanvasGraphics_paintXObject() {
+      warn('Unsupported \'paintXObject\' command.');
+    },
+
+    // Marked content
+
+    markPoint: function CanvasGraphics_markPoint(tag) {
+      // TODO Marked content.
+    },
+    markPointProps: function CanvasGraphics_markPointProps(tag, properties) {
+      // TODO Marked content.
+    },
+    beginMarkedContent: function CanvasGraphics_beginMarkedContent(tag) {
+      // TODO Marked content.
+    },
+    beginMarkedContentProps: function CanvasGraphics_beginMarkedContentProps(
+                                        tag, properties) {
+      // TODO Marked content.
+    },
+    endMarkedContent: function CanvasGraphics_endMarkedContent() {
+      // TODO Marked content.
+    },
+
+    // Compatibility
+
+    beginCompat: function CanvasGraphics_beginCompat() {
+      // TODO ignore undefined operators (should we do that anyway?)
+    },
+    endCompat: function CanvasGraphics_endCompat() {
+      // TODO stop ignoring undefined operators
+    },
+
+    // Helper functions
+
+    consumePath: function CanvasGraphics_consumePath() {
+      var ctx = this.ctx;
+      if (this.pendingClip) {
+        if (this.pendingClip === EO_CLIP) {
+          if (ctx.mozFillRule !== undefined) {
+            ctx.mozFillRule = 'evenodd';
+            ctx.clip();
+            ctx.mozFillRule = 'nonzero';
+          } else {
+            ctx.clip('evenodd');
+          }
+        } else {
+          ctx.clip();
+        }
+        this.pendingClip = null;
+      }
+      ctx.beginPath();
+    },
+    getSinglePixelWidth: function CanvasGraphics_getSinglePixelWidth(scale) {
+      if (this.cachedGetSinglePixelWidth === null) {
+        var inverse = this.ctx.mozCurrentTransformInverse;
+        // max of the current horizontal and vertical scale
+        this.cachedGetSinglePixelWidth = Math.sqrt(Math.max(
+          (inverse[0] * inverse[0] + inverse[1] * inverse[1]),
+          (inverse[2] * inverse[2] + inverse[3] * inverse[3])));
+      }
+      return this.cachedGetSinglePixelWidth;
+    },
+    getCanvasPosition: function CanvasGraphics_getCanvasPosition(x, y) {
+      var transform = this.ctx.mozCurrentTransform;
+      return [
+        transform[0] * x + transform[2] * y + transform[4],
+        transform[1] * x + transform[3] * y + transform[5]
+      ];
+    }
+  };
+
+  for (var op in OPS) {
+    CanvasGraphics.prototype[OPS[op]] = CanvasGraphics.prototype[op];
+  }
+
+  return CanvasGraphics;
+})();
+
+exports.CanvasGraphics = CanvasGraphics;
+exports.createScratchCanvas = createScratchCanvas;
+}));
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsDisplayAPI = {}), root.pdfjsSharedUtil,
+      root.pdfjsDisplayFontLoader, root.pdfjsDisplayCanvas,
+      root.pdfjsDisplayMetadata, root.pdfjsDisplayDOMUtils);
+  }
+}(this, function (exports, sharedUtil, displayFontLoader, displayCanvas,
+                  displayMetadata, displayDOMUtils, amdRequire) {
+
+var InvalidPDFException = sharedUtil.InvalidPDFException;
+var MessageHandler = sharedUtil.MessageHandler;
+var MissingPDFException = sharedUtil.MissingPDFException;
+var PageViewport = sharedUtil.PageViewport;
+var PasswordResponses = sharedUtil.PasswordResponses;
+var PasswordException = sharedUtil.PasswordException;
+var StatTimer = sharedUtil.StatTimer;
+var UnexpectedResponseException = sharedUtil.UnexpectedResponseException;
+var UnknownErrorException = sharedUtil.UnknownErrorException;
+var Util = sharedUtil.Util;
+var createPromiseCapability = sharedUtil.createPromiseCapability;
+var error = sharedUtil.error;
+var deprecated = sharedUtil.deprecated;
+var getVerbosityLevel = sharedUtil.getVerbosityLevel;
+var info = sharedUtil.info;
+var isArrayBuffer = sharedUtil.isArrayBuffer;
+var isSameOrigin = sharedUtil.isSameOrigin;
+var loadJpegStream = sharedUtil.loadJpegStream;
+var stringToBytes = sharedUtil.stringToBytes;
+var globalScope = sharedUtil.globalScope;
+var warn = sharedUtil.warn;
+var FontFaceObject = displayFontLoader.FontFaceObject;
+var FontLoader = displayFontLoader.FontLoader;
+var CanvasGraphics = displayCanvas.CanvasGraphics;
+var createScratchCanvas = displayCanvas.createScratchCanvas;
+var Metadata = displayMetadata.Metadata;
+var getDefaultSetting = displayDOMUtils.getDefaultSetting;
+
+var DEFAULT_RANGE_CHUNK_SIZE = 65536; // 2^16 = 65536
+
+var isWorkerDisabled = false;
+var workerSrc;
+var isPostMessageTransfersDisabled = false;
+
+
+var useRequireEnsure = false;
+if (typeof window === 'undefined') {
+  // node.js - disable worker and set require.ensure.
+  isWorkerDisabled = true;
+  if (typeof require.ensure === 'undefined') {
+    require.ensure = require('node-ensure');
+  }
+  useRequireEnsure = true;
+}
+if (typeof __webpack_require__ !== 'undefined') {
+  useRequireEnsure = true;
+}
+if (typeof requirejs !== 'undefined' && requirejs.toUrl) {
+  workerSrc = requirejs.toUrl('pdfjs-dist/build/pdf.worker.js');
+}
+var dynamicLoaderSupported = typeof requirejs !== 'undefined' && requirejs.load;
+var fakeWorkerFilesLoader = useRequireEnsure ? (function (callback) {
+  require.ensure([], function () {
+    var worker = require('./pdf.worker.js');
+    callback(worker.WorkerMessageHandler);
+  });
+}) : dynamicLoaderSupported ? (function (callback) {
+  requirejs(['pdfjs-dist/build/pdf.worker'], function (worker) {
+    callback(worker.WorkerMessageHandler);
+  });
+}) : null;
+
+
+/**
+ * Document initialization / loading parameters object.
+ *
+ * @typedef {Object} DocumentInitParameters
+ * @property {string}     url   - The URL of the PDF.
+ * @property {TypedArray|Array|string} data - Binary PDF data. Use typed arrays
+ *   (Uint8Array) to improve the memory usage. If PDF data is BASE64-encoded,
+ *   use atob() to convert it to a binary string first.
+ * @property {Object}     httpHeaders - Basic authentication headers.
+ * @property {boolean}    withCredentials - Indicates whether or not cross-site
+ *   Access-Control requests should be made using credentials such as cookies
+ *   or authorization headers. The default is false.
+ * @property {string}     password - For decrypting password-protected PDFs.
+ * @property {TypedArray} 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.
+ * @property {number}     length - The PDF file length. It's used for progress
+ *   reports and range requests operations.
+ * @property {PDFDataRangeTransport} range
+ * @property {number}     rangeChunkSize - Optional parameter to specify
+ *   maximum number of bytes fetched per range request. The default value is
+ *   2^16 = 65536.
+ * @property {PDFWorker}  worker - The worker that will be used for the loading
+ *   and parsing of the PDF data.
+ */
+
+/**
+ * @typedef {Object} PDFDocumentStats
+ * @property {Array} streamTypes - Used stream types in the document (an item
+ *   is set to true if specific stream ID was used in the document).
+ * @property {Array} fontTypes - Used font type in the document (an item is set
+ *   to true if specific font ID was used in the document).
+ */
+
+/**
+ * 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|TypedArray|DocumentInitParameters|PDFDataRangeTransport} src
+ * Can be a url to where a PDF is located, a typed array (Uint8Array)
+ * already populated with data or parameter object.
+ *
+ * @param {PDFDataRangeTransport} pdfDataRangeTransport (deprecated) It is used
+ * if you want to manually serve range requests for data in the PDF.
+ *
+ * @param {function} passwordCallback (deprecated) 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}).
+ *
+ * @param {function} progressCallback (deprecated) It is used to be able to
+ * monitor the loading progress of the PDF file (necessary to implement e.g.
+ * a loading bar). The callback receives an {Object} with the properties:
+ * {number} loaded and {number} total.
+ *
+ * @return {PDFDocumentLoadingTask}
+ */
+function getDocument(src, pdfDataRangeTransport,
+                     passwordCallback, progressCallback) {
+  var task = new PDFDocumentLoadingTask();
+
+  // Support of the obsolete arguments (for compatibility with API v1.0)
+  if (arguments.length > 1) {
+    deprecated('getDocument is called with pdfDataRangeTransport, ' +
+               'passwordCallback or progressCallback argument');
+  }
+  if (pdfDataRangeTransport) {
+    if (!(pdfDataRangeTransport instanceof PDFDataRangeTransport)) {
+      // Not a PDFDataRangeTransport instance, trying to add missing properties.
+      pdfDataRangeTransport = Object.create(pdfDataRangeTransport);
+      pdfDataRangeTransport.length = src.length;
+      pdfDataRangeTransport.initialData = src.initialData;
+      if (!pdfDataRangeTransport.abort) {
+        pdfDataRangeTransport.abort = function () {};
+      }
+    }
+    src = Object.create(src);
+    src.range = pdfDataRangeTransport;
+  }
+  task.onPassword = passwordCallback || null;
+  task.onProgress = progressCallback || null;
+
+  var source;
+  if (typeof src === 'string') {
+    source = { url: src };
+  } else if (isArrayBuffer(src)) {
+    source = { data: src };
+  } else if (src instanceof PDFDataRangeTransport) {
+    source = { range: src };
+  } else {
+    if (typeof src !== 'object') {
+      error('Invalid parameter in getDocument, need either Uint8Array, ' +
+        'string or a parameter object');
+    }
+    if (!src.url && !src.data && !src.range) {
+      error('Invalid parameter object: need either .data, .range or .url');
+    }
+
+    source = src;
+  }
+
+  var params = {};
+  var rangeTransport = null;
+  var worker = null;
+  for (var key in source) {
+    if (key === 'url' && typeof window !== 'undefined') {
+      // The full path is required in the 'url' field.
+      params[key] = new URL(source[key], window.location).href;
+      continue;
+    } else if (key === 'range') {
+      rangeTransport = source[key];
+      continue;
+    } else if (key === 'worker') {
+      worker = source[key];
+      continue;
+    } else if (key === 'data' && !(source[key] instanceof Uint8Array)) {
+      // Converting string or array-like data to Uint8Array.
+      var pdfBytes = source[key];
+      if (typeof pdfBytes === 'string') {
+        params[key] = stringToBytes(pdfBytes);
+      } else if (typeof pdfBytes === 'object' && pdfBytes !== null &&
+                 !isNaN(pdfBytes.length)) {
+        params[key] = new Uint8Array(pdfBytes);
+      } else if (isArrayBuffer(pdfBytes)) {
+        params[key] = new Uint8Array(pdfBytes);
+      } else {
+        error('Invalid PDF binary data: either typed array, string or ' +
+              'array-like object is expected in the data property.');
+      }
+      continue;
+    }
+    params[key] = source[key];
+  }
+
+  params.rangeChunkSize = params.rangeChunkSize || DEFAULT_RANGE_CHUNK_SIZE;
+
+  if (!worker) {
+    // Worker was not provided -- creating and owning our own.
+    worker = new PDFWorker();
+    task._worker = worker;
+  }
+  var docId = task.docId;
+  worker.promise.then(function () {
+    if (task.destroyed) {
+      throw new Error('Loading aborted');
+    }
+    return _fetchDocument(worker, params, rangeTransport, docId).then(
+        function (workerId) {
+      if (task.destroyed) {
+        throw new Error('Loading aborted');
+      }
+      var messageHandler = new MessageHandler(docId, workerId, worker.port);
+      var transport = new WorkerTransport(messageHandler, task, rangeTransport);
+      task._transport = transport;
+      messageHandler.send('Ready', null);
+    });
+  }).catch(task._capability.reject);
+
+  return task;
+}
+
+/**
+ * Starts fetching of specified PDF document/data.
+ * @param {PDFWorker} worker
+ * @param {Object} source
+ * @param {PDFDataRangeTransport} pdfDataRangeTransport
+ * @param {string} docId Unique document id, used as MessageHandler id.
+ * @returns {Promise} The promise, which is resolved when worker id of
+ *                    MessageHandler is known.
+ * @private
+ */
+function _fetchDocument(worker, source, pdfDataRangeTransport, docId) {
+  if (worker.destroyed) {
+    return Promise.reject(new Error('Worker was destroyed'));
+  }
+
+  source.disableAutoFetch = getDefaultSetting('disableAutoFetch');
+  source.disableStream = getDefaultSetting('disableStream');
+  source.chunkedViewerLoading = !!pdfDataRangeTransport;
+  if (pdfDataRangeTransport) {
+    source.length = pdfDataRangeTransport.length;
+    source.initialData = pdfDataRangeTransport.initialData;
+  }
+  return worker.messageHandler.sendWithPromise('GetDocRequest', {
+    docId: docId,
+    source: source,
+    disableRange: getDefaultSetting('disableRange'),
+    maxImageSize: getDefaultSetting('maxImageSize'),
+    cMapUrl: getDefaultSetting('cMapUrl'),
+    cMapPacked: getDefaultSetting('cMapPacked'),
+    disableFontFace: getDefaultSetting('disableFontFace'),
+    disableCreateObjectURL: getDefaultSetting('disableCreateObjectURL'),
+    postMessageTransfers: getDefaultSetting('postMessageTransfers') &&
+                          !isPostMessageTransfersDisabled,
+  }).then(function (workerId) {
+    if (worker.destroyed) {
+      throw new Error('Worker was destroyed');
+    }
+    return workerId;
+  });
+}
+
+/**
+ * PDF document loading operation.
+ * @class
+ * @alias PDFDocumentLoadingTask
+ */
+var PDFDocumentLoadingTask = (function PDFDocumentLoadingTaskClosure() {
+  var nextDocumentId = 0;
+
+  /** @constructs PDFDocumentLoadingTask */
+  function PDFDocumentLoadingTask() {
+    this._capability = createPromiseCapability();
+    this._transport = null;
+    this._worker = null;
+
+    /**
+     * Unique document loading task id -- used in MessageHandlers.
+     * @type {string}
+     */
+    this.docId = 'd' + (nextDocumentId++);
+
+    /**
+     * Shows if loading task is destroyed.
+     * @type {boolean}
+     */
+    this.destroyed = false;
+
+    /**
+     * Callback to request a password if wrong or no password was provided.
+     * The callback receives two parameters: function that needs to be called
+     * with new password and reason (see {PasswordResponses}).
+     */
+    this.onPassword = null;
+
+    /**
+     * Callback to be able to monitor the loading progress of the PDF file
+     * (necessary to implement e.g. a loading bar). The callback receives
+     * an {Object} with the properties: {number} loaded and {number} total.
+     */
+    this.onProgress = null;
+
+    /**
+     * Callback to when unsupported feature is used. The callback receives
+     * an {UNSUPPORTED_FEATURES} argument.
+     */
+    this.onUnsupportedFeature = null;
+  }
+
+  PDFDocumentLoadingTask.prototype =
+      /** @lends PDFDocumentLoadingTask.prototype */ {
+    /**
+     * @return {Promise}
+     */
+    get promise() {
+      return this._capability.promise;
+    },
+
+    /**
+     * Aborts all network requests and destroys worker.
+     * @return {Promise} A promise that is resolved after destruction activity
+     *                   is completed.
+     */
+    destroy: function () {
+      this.destroyed = true;
+
+      var transportDestroyed = !this._transport ? Promise.resolve() :
+        this._transport.destroy();
+      return transportDestroyed.then(function () {
+        this._transport = null;
+        if (this._worker) {
+          this._worker.destroy();
+          this._worker = null;
+        }
+      }.bind(this));
+    },
+
+    /**
+     * Registers callbacks to indicate the document loading completion.
+     *
+     * @param {function} onFulfilled The callback for the loading completion.
+     * @param {function} onRejected The callback for the loading failure.
+     * @return {Promise} A promise that is resolved after the onFulfilled or
+     *                   onRejected callback.
+     */
+    then: function PDFDocumentLoadingTask_then(onFulfilled, onRejected) {
+      return this.promise.then.apply(this.promise, arguments);
+    }
+  };
+
+  return PDFDocumentLoadingTask;
+})();
+
+/**
+ * Abstract class to support range requests file loading.
+ * @class
+ * @alias PDFDataRangeTransport
+ * @param {number} length
+ * @param {Uint8Array} initialData
+ */
+var PDFDataRangeTransport = (function pdfDataRangeTransportClosure() {
+  function PDFDataRangeTransport(length, initialData) {
+    this.length = length;
+    this.initialData = initialData;
+
+    this._rangeListeners = [];
+    this._progressListeners = [];
+    this._progressiveReadListeners = [];
+    this._readyCapability = createPromiseCapability();
+  }
+  PDFDataRangeTransport.prototype =
+      /** @lends PDFDataRangeTransport.prototype */ {
+    addRangeListener:
+        function PDFDataRangeTransport_addRangeListener(listener) {
+      this._rangeListeners.push(listener);
+    },
+
+    addProgressListener:
+        function PDFDataRangeTransport_addProgressListener(listener) {
+      this._progressListeners.push(listener);
+    },
+
+    addProgressiveReadListener:
+        function PDFDataRangeTransport_addProgressiveReadListener(listener) {
+      this._progressiveReadListeners.push(listener);
+    },
+
+    onDataRange: function PDFDataRangeTransport_onDataRange(begin, chunk) {
+      var listeners = this._rangeListeners;
+      for (var i = 0, n = listeners.length; i < n; ++i) {
+        listeners[i](begin, chunk);
+      }
+    },
+
+    onDataProgress: function PDFDataRangeTransport_onDataProgress(loaded) {
+      this._readyCapability.promise.then(function () {
+        var listeners = this._progressListeners;
+        for (var i = 0, n = listeners.length; i < n; ++i) {
+          listeners[i](loaded);
+        }
+      }.bind(this));
+    },
+
+    onDataProgressiveRead:
+        function PDFDataRangeTransport_onDataProgress(chunk) {
+      this._readyCapability.promise.then(function () {
+        var listeners = this._progressiveReadListeners;
+        for (var i = 0, n = listeners.length; i < n; ++i) {
+          listeners[i](chunk);
+        }
+      }.bind(this));
+    },
+
+    transportReady: function PDFDataRangeTransport_transportReady() {
+      this._readyCapability.resolve();
+    },
+
+    requestDataRange:
+        function PDFDataRangeTransport_requestDataRange(begin, end) {
+      throw new Error('Abstract method PDFDataRangeTransport.requestDataRange');
+    },
+
+    abort: function PDFDataRangeTransport_abort() {
+    }
+  };
+  return PDFDataRangeTransport;
+})();
+
+/**
+ * Proxy to a PDFDocument in the worker thread. Also, contains commonly used
+ * properties that can be read synchronously.
+ * @class
+ * @alias PDFDocumentProxy
+ */
+var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
+  function PDFDocumentProxy(pdfInfo, transport, loadingTask) {
+    this.pdfInfo = pdfInfo;
+    this.transport = transport;
+    this.loadingTask = loadingTask;
+  }
+  PDFDocumentProxy.prototype = /** @lends 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;
+    },
+    /**
+     * @param {number} pageNumber The page number to get. The first page is 1.
+     * @return {Promise} A promise that is resolved with a {@link PDFPageProxy}
+     * object.
+     */
+    getPage: function PDFDocumentProxy_getPage(pageNumber) {
+      return this.transport.getPage(pageNumber);
+    },
+    /**
+     * @param {{num: number, gen: number}} ref The page reference. Must have
+     *   the '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.
+     *
+     * This can be slow for large documents: use getDestination instead
+     */
+    getDestinations: function PDFDocumentProxy_getDestinations() {
+      return this.transport.getDestinations();
+    },
+    /**
+     * @param {string} id The named destination to get.
+     * @return {Promise} A promise that is resolved with all information
+     * of the given named destination.
+     */
+    getDestination: function PDFDocumentProxy_getDestination(id) {
+      return this.transport.getDestination(id);
+    },
+    /**
+     * @return {Promise} A promise that is resolved with:
+     *   an Array containing the pageLabels that correspond to the pageIndexes,
+     *   or `null` when no pageLabels are present in the PDF file.
+     */
+    getPageLabels: function PDFDocumentProxy_getPageLabels() {
+      return this.transport.getPageLabels();
+    },
+    /**
+     * @return {Promise} A promise that is resolved with a lookup table for
+     * mapping named attachments to their content.
+     */
+    getAttachments: function PDFDocumentProxy_getAttachments() {
+      return this.transport.getAttachments();
+    },
+    /**
+     * @return {Promise} A promise that is resolved with an array of all the
+     * JavaScript strings in the name tree.
+     */
+    getJavaScript: function PDFDocumentProxy_getJavaScript() {
+      return this.transport.getJavaScript();
+    },
+    /**
+     * @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 Uint8Array,
+     *   dest: dest obj,
+     *   url: string,
+     *   items: array of more items like this
+     *  },
+     *  ...
+     * ].
+     */
+    getOutline: function PDFDocumentProxy_getOutline() {
+      return this.transport.getOutline();
+    },
+    /**
+     * @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() {
+      return this.transport.getMetadata();
+    },
+    /**
+     * @return {Promise} A promise that is resolved with a TypedArray that has
+     * the raw data from the PDF.
+     */
+    getData: function PDFDocumentProxy_getData() {
+      return this.transport.getData();
+    },
+    /**
+     * @return {Promise} A promise that is resolved when the document's data
+     * is loaded. It is resolved with an {Object} that contains the length
+     * property that indicates size of the PDF data in bytes.
+     */
+    getDownloadInfo: function PDFDocumentProxy_getDownloadInfo() {
+      return this.transport.downloadInfoCapability.promise;
+    },
+    /**
+     * @return {Promise} A promise this is resolved with current stats about
+     * document structures (see {@link PDFDocumentStats}).
+     */
+    getStats: function PDFDocumentProxy_getStats() {
+      return this.transport.getStats();
+    },
+    /**
+     * Cleans up resources allocated by the document, e.g. created @font-face.
+     */
+    cleanup: function PDFDocumentProxy_cleanup() {
+      this.transport.startCleanup();
+    },
+    /**
+     * Destroys current document instance and terminates worker.
+     */
+    destroy: function PDFDocumentProxy_destroy() {
+      return this.loadingTask.destroy();
+    }
+  };
+  return PDFDocumentProxy;
+})();
+
+/**
+ * Page getTextContent parameters.
+ *
+ * @typedef {Object} getTextContentParameters
+ * @param {boolean} normalizeWhitespace - replaces all occurrences of
+ *   whitespace with standard spaces (0x20). The default value is `false`.
+ */
+
+/**
+ * Page text content.
+ *
+ * @typedef {Object} TextContent
+ * @property {array} items - array of {@link TextItem}
+ * @property {Object} styles - {@link TextStyles} objects, indexed by font
+ *                    name.
+ */
+
+/**
+ * Page text content part.
+ *
+ * @typedef {Object} TextItem
+ * @property {string} str - text content.
+ * @property {string} dir - text direction: 'ttb', 'ltr' or 'rtl'.
+ * @property {array} transform - transformation matrix.
+ * @property {number} width - width in device space.
+ * @property {number} height - height in device space.
+ * @property {string} fontName - font name used by pdf.js for converted font.
+ */
+
+/**
+ * Text style.
+ *
+ * @typedef {Object} TextStyle
+ * @property {number} ascent - font ascent.
+ * @property {number} descent - font descent.
+ * @property {boolean} vertical - text is in vertical mode.
+ * @property {string} fontFamily - possible font family
+ */
+
+/**
+ * Page annotation parameters.
+ *
+ * @typedef {Object} GetAnnotationsParameters
+ * @param {string} intent - Determines the annotations that will be fetched,
+ *                 can be either 'display' (viewable annotations) or 'print'
+ *                 (printable annotations).
+ *                 If the parameter is omitted, all annotations are fetched.
+ */
+
+/**
+ * Page render parameters.
+ *
+ * @typedef {Object} RenderParameters
+ * @property {Object} canvasContext - A 2D context of a DOM Canvas object.
+ * @property {PageViewport} viewport - Rendering viewport obtained by
+ *                                calling of PDFPage.getViewport method.
+ * @property {string} intent - Rendering intent, can be 'display' or 'print'
+ *                    (default value is 'display').
+ * @property {Array}  transform - (optional) Additional transform, applied
+ *                    just before viewport transform.
+ * @property {Object} imageLayer - (optional) An object that has beginLayout,
+ *                    endLayout and appendImage functions.
+ * @property {function} continueCallback - (deprecated) 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.
+ */
+
+/**
+ * PDF page operator list.
+ *
+ * @typedef {Object} PDFOperatorList
+ * @property {Array} fnArray - Array containing the operator functions.
+ * @property {Array} argsArray - Array containing the arguments of the
+ *                               functions.
+ */
+
+/**
+ * Proxy to a PDFPage in the worker thread.
+ * @class
+ * @alias PDFPageProxy
+ */
+var PDFPageProxy = (function PDFPageProxyClosure() {
+  function PDFPageProxy(pageIndex, pageInfo, transport) {
+    this.pageIndex = pageIndex;
+    this.pageInfo = pageInfo;
+    this.transport = transport;
+    this.stats = new StatTimer();
+    this.stats.enabled = getDefaultSetting('enableStats');
+    this.commonObjs = transport.commonObjs;
+    this.objs = new PDFObjects();
+    this.cleanupAfterRender = false;
+    this.pendingCleanup = false;
+    this.intentStates = Object.create(null);
+    this.destroyed = false;
+  }
+  PDFPageProxy.prototype = /** @lends PDFPageProxy.prototype */ {
+    /**
+     * @return {number} Page number of the page. First page is 1.
+     */
+    get pageNumber() {
+      return this.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 PageViewport(this.view, scale, rotate, 0, 0);
+    },
+    /**
+     * @param {GetAnnotationsParameters} params - Annotation parameters.
+     * @return {Promise} A promise that is resolved with an {Array} of the
+     * annotation objects.
+     */
+    getAnnotations: function PDFPageProxy_getAnnotations(params) {
+      var intent = (params && params.intent) || null;
+
+      if (!this.annotationsPromise || this.annotationsIntent !== intent) {
+        this.annotationsPromise = this.transport.getAnnotations(this.pageIndex,
+                                                                intent);
+        this.annotationsIntent = intent;
+      }
+      return this.annotationsPromise;
+    },
+    /**
+     * Begins the process of rendering a page to the desired context.
+     * @param {RenderParameters} params Page render parameters.
+     * @return {RenderTask} An object that contains the promise, which
+     *                      is resolved when the page finishes rendering.
+     */
+    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.pendingCleanup = false;
+
+      var renderingIntent = (params.intent === 'print' ? 'print' : 'display');
+
+      if (!this.intentStates[renderingIntent]) {
+        this.intentStates[renderingIntent] = Object.create(null);
+      }
+      var intentState = this.intentStates[renderingIntent];
+
+      // If there's no displayReadyCapability yet, then the operatorList
+      // was never requested before. Make the request and create the promise.
+      if (!intentState.displayReadyCapability) {
+        intentState.receivingOperatorList = true;
+        intentState.displayReadyCapability = createPromiseCapability();
+        intentState.operatorList = {
+          fnArray: [],
+          argsArray: [],
+          lastChunk: false
+        };
+
+        this.stats.time('Page Request');
+        this.transport.messageHandler.send('RenderPageRequest', {
+          pageIndex: this.pageNumber - 1,
+          intent: renderingIntent
+        });
+      }
+
+      var internalRenderTask = new InternalRenderTask(complete, params,
+                                                      this.objs,
+                                                      this.commonObjs,
+                                                      intentState.operatorList,
+                                                      this.pageNumber);
+      internalRenderTask.useRequestAnimationFrame = renderingIntent !== 'print';
+      if (!intentState.renderTasks) {
+        intentState.renderTasks = [];
+      }
+      intentState.renderTasks.push(internalRenderTask);
+      var renderTask = internalRenderTask.task;
+
+      // Obsolete parameter support
+      if (params.continueCallback) {
+        deprecated('render is used with continueCallback parameter');
+        renderTask.onContinue = params.continueCallback;
+      }
+
+      var self = this;
+      intentState.displayReadyCapability.promise.then(
+        function pageDisplayReadyPromise(transparency) {
+          if (self.pendingCleanup) {
+            complete();
+            return;
+          }
+          stats.time('Rendering');
+          internalRenderTask.initalizeGraphics(transparency);
+          internalRenderTask.operatorListChanged();
+        },
+        function pageDisplayReadPromiseError(reason) {
+          complete(reason);
+        }
+      );
+
+      function complete(error) {
+        var i = intentState.renderTasks.indexOf(internalRenderTask);
+        if (i >= 0) {
+          intentState.renderTasks.splice(i, 1);
+        }
+
+        if (self.cleanupAfterRender) {
+          self.pendingCleanup = true;
+        }
+        self._tryCleanup();
+
+        if (error) {
+          internalRenderTask.capability.reject(error);
+        } else {
+          internalRenderTask.capability.resolve();
+        }
+        stats.timeEnd('Rendering');
+        stats.timeEnd('Overall');
+      }
+
+      return renderTask;
+    },
+
+    /**
+     * @return {Promise} A promise resolved with an {@link PDFOperatorList}
+     * object that represents page's operator list.
+     */
+    getOperatorList: function PDFPageProxy_getOperatorList() {
+      function operatorListChanged() {
+        if (intentState.operatorList.lastChunk) {
+          intentState.opListReadCapability.resolve(intentState.operatorList);
+
+          var i = intentState.renderTasks.indexOf(opListTask);
+          if (i >= 0) {
+            intentState.renderTasks.splice(i, 1);
+          }
+        }
+      }
+
+      var renderingIntent = 'oplist';
+      if (!this.intentStates[renderingIntent]) {
+        this.intentStates[renderingIntent] = Object.create(null);
+      }
+      var intentState = this.intentStates[renderingIntent];
+      var opListTask;
+
+      if (!intentState.opListReadCapability) {
+        opListTask = {};
+        opListTask.operatorListChanged = operatorListChanged;
+        intentState.receivingOperatorList = true;
+        intentState.opListReadCapability = createPromiseCapability();
+        intentState.renderTasks = [];
+        intentState.renderTasks.push(opListTask);
+        intentState.operatorList = {
+          fnArray: [],
+          argsArray: [],
+          lastChunk: false
+        };
+
+        this.transport.messageHandler.send('RenderPageRequest', {
+          pageIndex: this.pageIndex,
+          intent: renderingIntent
+        });
+      }
+      return intentState.opListReadCapability.promise;
+    },
+
+    /**
+     * @param {getTextContentParameters} params - getTextContent parameters.
+     * @return {Promise} That is resolved a {@link TextContent}
+     * object that represent the page text content.
+     */
+    getTextContent: function PDFPageProxy_getTextContent(params) {
+      var normalizeWhitespace = (params && params.normalizeWhitespace) || false;
+
+      return this.transport.messageHandler.sendWithPromise('GetTextContent', {
+        pageIndex: this.pageNumber - 1,
+        normalizeWhitespace: normalizeWhitespace,
+      });
+    },
+
+    /**
+     * Destroys page object.
+     */
+    _destroy: function PDFPageProxy_destroy() {
+      this.destroyed = true;
+      this.transport.pageCache[this.pageIndex] = null;
+
+      var waitOn = [];
+      Object.keys(this.intentStates).forEach(function(intent) {
+        if (intent === 'oplist') {
+          // Avoid errors below, since the renderTasks are just stubs.
+          return;
+        }
+        var intentState = this.intentStates[intent];
+        intentState.renderTasks.forEach(function(renderTask) {
+          var renderCompleted = renderTask.capability.promise.
+            catch(function () {}); // ignoring failures
+          waitOn.push(renderCompleted);
+          renderTask.cancel();
+        });
+      }, this);
+      this.objs.clear();
+      this.annotationsPromise = null;
+      this.pendingCleanup = false;
+      return Promise.all(waitOn);
+    },
+
+    /**
+     * Cleans up resources allocated by the page. (deprecated)
+     */
+    destroy: function() {
+      deprecated('page destroy method, use cleanup() instead');
+      this.cleanup();
+    },
+
+    /**
+     * Cleans up resources allocated by the page.
+     */
+    cleanup: function PDFPageProxy_cleanup() {
+      this.pendingCleanup = true;
+      this._tryCleanup();
+    },
+    /**
+     * For internal use only. Attempts to clean up if rendering is in a state
+     * where that's possible.
+     * @ignore
+     */
+    _tryCleanup: function PDFPageProxy_tryCleanup() {
+      if (!this.pendingCleanup ||
+          Object.keys(this.intentStates).some(function(intent) {
+            var intentState = this.intentStates[intent];
+            return (intentState.renderTasks.length !== 0 ||
+                    intentState.receivingOperatorList);
+          }, this)) {
+        return;
+      }
+
+      Object.keys(this.intentStates).forEach(function(intent) {
+        delete this.intentStates[intent];
+      }, this);
+      this.objs.clear();
+      this.annotationsPromise = null;
+      this.pendingCleanup = false;
+    },
+    /**
+     * For internal use only.
+     * @ignore
+     */
+    _startRenderPage: function PDFPageProxy_startRenderPage(transparency,
+                                                            intent) {
+      var intentState = this.intentStates[intent];
+      // TODO Refactor RenderPageRequest to separate rendering
+      // and operator list logic
+      if (intentState.displayReadyCapability) {
+        intentState.displayReadyCapability.resolve(transparency);
+      }
+    },
+    /**
+     * For internal use only.
+     * @ignore
+     */
+    _renderPageChunk: function PDFPageProxy_renderPageChunk(operatorListChunk,
+                                                            intent) {
+      var intentState = this.intentStates[intent];
+      var i, ii;
+      // Add the new chunk to the current operator list.
+      for (i = 0, ii = operatorListChunk.length; i < ii; i++) {
+        intentState.operatorList.fnArray.push(operatorListChunk.fnArray[i]);
+        intentState.operatorList.argsArray.push(
+          operatorListChunk.argsArray[i]);
+      }
+      intentState.operatorList.lastChunk = operatorListChunk.lastChunk;
+
+      // Notify all the rendering tasks there are more operators to be consumed.
+      for (i = 0; i < intentState.renderTasks.length; i++) {
+        intentState.renderTasks[i].operatorListChanged();
+      }
+
+      if (operatorListChunk.lastChunk) {
+        intentState.receivingOperatorList = false;
+        this._tryCleanup();
+      }
+    }
+  };
+  return PDFPageProxy;
+})();
+
+/**
+ * PDF.js web worker abstraction, it controls instantiation of PDF documents and
+ * WorkerTransport for them.  If creation of a web worker is not possible,
+ * a "fake" worker will be used instead.
+ * @class
+ */
+var PDFWorker = (function PDFWorkerClosure() {
+  var nextFakeWorkerId = 0;
+
+  function getWorkerSrc() {
+    if (typeof workerSrc !== 'undefined') {
+      return workerSrc;
+    }
+    if (getDefaultSetting('workerSrc')) {
+      return getDefaultSetting('workerSrc');
+    }
+    if (pdfjsFilePath) {
+      return pdfjsFilePath.replace(/\.js$/i, '.worker.js');
+    }
+    error('No PDFJS.workerSrc specified');
+  }
+
+  var fakeWorkerFilesLoadedCapability;
+
+  // Loads worker code into main thread.
+  function setupFakeWorkerGlobal() {
+    var WorkerMessageHandler;
+    if (!fakeWorkerFilesLoadedCapability) {
+      fakeWorkerFilesLoadedCapability = createPromiseCapability();
+      // 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.
+      var loader = fakeWorkerFilesLoader || function (callback) {
+        Util.loadScript(getWorkerSrc(), function () {
+          callback(window.pdfjsDistBuildPdfWorker.WorkerMessageHandler);
+        });
+      };
+      loader(fakeWorkerFilesLoadedCapability.resolve);
+    }
+    return fakeWorkerFilesLoadedCapability.promise;
+  }
+
+  function createCDNWrapper(url) {
+    // We will rely on blob URL's property to specify origin.
+    // We want this function to fail in case if createObjectURL or Blob do not
+    // exist or fail for some reason -- our Worker creation will fail anyway.
+    var wrapper = 'importScripts(\'' + url + '\');';
+    return URL.createObjectURL(new Blob([wrapper]));
+  }
+
+  function PDFWorker(name) {
+    this.name = name;
+    this.destroyed = false;
+
+    this._readyCapability = createPromiseCapability();
+    this._port = null;
+    this._webWorker = null;
+    this._messageHandler = null;
+    this._initialize();
+  }
+
+  PDFWorker.prototype =  /** @lends PDFWorker.prototype */ {
+    get promise() {
+      return this._readyCapability.promise;
+    },
+
+    get port() {
+      return this._port;
+    },
+
+    get messageHandler() {
+      return this._messageHandler;
+    },
+
+    _initialize: function PDFWorker_initialize() {
+      // If worker support isn't disabled explicit and the browser has worker
+      // support, create a new web worker and test if it/the browser fulfills
+      // all requirements to run parts of pdf.js in a web worker.
+      // Right now, the requirement is, that an Uint8Array is still an
+      // Uint8Array as it arrives on the worker. (Chrome added this with v.15.)
+      if (!isWorkerDisabled && !getDefaultSetting('disableWorker') &&
+          typeof Worker !== 'undefined') {
+        var workerSrc = getWorkerSrc();
+
+        try {
+          // Wraps workerSrc path into blob URL, if the former does not belong
+          // to the same origin.
+          if (!isSameOrigin(window.location.href, workerSrc)) {
+            workerSrc = createCDNWrapper(
+              new URL(workerSrc, window.location).href);
+          }
+          // Some versions of FF can't create a worker on localhost, see:
+          // https://bugzilla.mozilla.org/show_bug.cgi?id=683280
+          var worker = new Worker(workerSrc);
+          var messageHandler = new MessageHandler('main', 'worker', worker);
+          var terminateEarly = function() {
+            worker.removeEventListener('error', onWorkerError);
+            messageHandler.destroy();
+            worker.terminate();
+            if (this.destroyed) {
+              this._readyCapability.reject(new Error('Worker was destroyed'));
+            } else {
+              // Fall back to fake worker if the termination is caused by an
+              // error (e.g. NetworkError / SecurityError).
+              this._setupFakeWorker();
+            }
+          }.bind(this);
+
+          var onWorkerError = function(event) {
+            if (!this._webWorker) {
+              // Worker failed to initialize due to an error. Clean up and fall
+              // back to the fake worker.
+              terminateEarly();
+            }
+          }.bind(this);
+          worker.addEventListener('error', onWorkerError);
+
+          messageHandler.on('test', function PDFWorker_test(data) {
+            worker.removeEventListener('error', onWorkerError);
+            if (this.destroyed) {
+              terminateEarly();
+              return; // worker was destroyed
+            }
+            var supportTypedArray = data && data.supportTypedArray;
+            if (supportTypedArray) {
+              this._messageHandler = messageHandler;
+              this._port = worker;
+              this._webWorker = worker;
+              if (!data.supportTransfers) {
+                isPostMessageTransfersDisabled = true;
+              }
+              this._readyCapability.resolve();
+              // Send global setting, e.g. verbosity level.
+              messageHandler.send('configure', {
+                verbosity: getVerbosityLevel()
+              });
+            } else {
+              this._setupFakeWorker();
+              messageHandler.destroy();
+              worker.terminate();
+            }
+          }.bind(this));
+
+          messageHandler.on('console_log', function (data) {
+            console.log.apply(console, data);
+          });
+          messageHandler.on('console_error', function (data) {
+            console.error.apply(console, data);
+          });
+
+          messageHandler.on('ready', function (data) {
+            worker.removeEventListener('error', onWorkerError);
+            if (this.destroyed) {
+              terminateEarly();
+              return; // worker was destroyed
+            }
+            try {
+              sendTest();
+            } catch (e)  {
+              // We need fallback to a faked worker.
+              this._setupFakeWorker();
+            }
+          }.bind(this));
+
+          var sendTest = function () {
+            var postMessageTransfers =
+              getDefaultSetting('postMessageTransfers') &&
+              !isPostMessageTransfersDisabled;
+            var testObj = new Uint8Array([postMessageTransfers ? 255 : 0]);
+            // Some versions of Opera throw a DATA_CLONE_ERR on serializing the
+            // typed array. Also, checking if we can use transfers.
+            try {
+              messageHandler.send('test', testObj, [testObj.buffer]);
+            } catch (ex) {
+              info('Cannot use postMessage transfers');
+              testObj[0] = 0;
+              messageHandler.send('test', testObj);
+            }
+          };
+
+          // It might take time for worker to initialize (especially when AMD
+          // loader is used). We will try to send test immediately, and then
+          // when 'ready' message will arrive. The worker shall process only
+          // first received 'test'.
+          sendTest();
+          return;
+        } catch (e) {
+          info('The worker has been disabled.');
+        }
+      }
+      // Either workers are disabled, not supported or have thrown an exception.
+      // Thus, we fallback to a faked worker.
+      this._setupFakeWorker();
+    },
+
+    _setupFakeWorker: function PDFWorker_setupFakeWorker() {
+      if (!isWorkerDisabled && !getDefaultSetting('disableWorker')) {
+        warn('Setting up fake worker.');
+        isWorkerDisabled = true;
+      }
+
+      setupFakeWorkerGlobal().then(function (WorkerMessageHandler) {
+        if (this.destroyed) {
+          this._readyCapability.reject(new Error('Worker was destroyed'));
+          return;
+        }
+
+        // If we don't use a worker, just post/sendMessage to the main thread.
+        var port = {
+          _listeners: [],
+          postMessage: function (obj) {
+            var e = {data: obj};
+            this._listeners.forEach(function (listener) {
+              listener.call(this, e);
+            }, this);
+          },
+          addEventListener: function (name, listener) {
+            this._listeners.push(listener);
+          },
+          removeEventListener: function (name, listener) {
+            var i = this._listeners.indexOf(listener);
+            this._listeners.splice(i, 1);
+          },
+          terminate: function () {}
+        };
+        this._port = port;
+
+        // All fake workers use the same port, making id unique.
+        var id = 'fake' + (nextFakeWorkerId++);
+
+        // If the main thread is our worker, setup the handling for the
+        // messages -- the main thread sends to it self.
+        var workerHandler = new MessageHandler(id + '_worker', id, port);
+        WorkerMessageHandler.setup(workerHandler, port);
+
+        var messageHandler = new MessageHandler(id, id + '_worker', port);
+        this._messageHandler = messageHandler;
+        this._readyCapability.resolve();
+      }.bind(this));
+    },
+
+    /**
+     * Destroys the worker instance.
+     */
+    destroy: function PDFWorker_destroy() {
+      this.destroyed = true;
+      if (this._webWorker) {
+        // We need to terminate only web worker created resource.
+        this._webWorker.terminate();
+        this._webWorker = null;
+      }
+      this._port = null;
+      if (this._messageHandler) {
+        this._messageHandler.destroy();
+        this._messageHandler = null;
+      }
+    }
+  };
+
+  return PDFWorker;
+})();
+
+/**
+ * For internal use only.
+ * @ignore
+ */
+var WorkerTransport = (function WorkerTransportClosure() {
+  function WorkerTransport(messageHandler, loadingTask, pdfDataRangeTransport) {
+    this.messageHandler = messageHandler;
+    this.loadingTask = loadingTask;
+    this.pdfDataRangeTransport = pdfDataRangeTransport;
+    this.commonObjs = new PDFObjects();
+    this.fontLoader = new FontLoader(loadingTask.docId);
+
+    this.destroyed = false;
+    this.destroyCapability = null;
+
+    this.pageCache = [];
+    this.pagePromises = [];
+    this.downloadInfoCapability = createPromiseCapability();
+
+    this.setupMessageHandler();
+  }
+  WorkerTransport.prototype = {
+    destroy: function WorkerTransport_destroy() {
+      if (this.destroyCapability) {
+        return this.destroyCapability.promise;
+      }
+
+      this.destroyed = true;
+      this.destroyCapability = createPromiseCapability();
+
+      var waitOn = [];
+      // We need to wait for all renderings to be completed, e.g.
+      // timeout/rAF can take a long time.
+      this.pageCache.forEach(function (page) {
+        if (page) {
+          waitOn.push(page._destroy());
+        }
+      });
+      this.pageCache = [];
+      this.pagePromises = [];
+      var self = this;
+      // We also need to wait for the worker to finish its long running tasks.
+      var terminated = this.messageHandler.sendWithPromise('Terminate', null);
+      waitOn.push(terminated);
+      Promise.all(waitOn).then(function () {
+        self.fontLoader.clear();
+        if (self.pdfDataRangeTransport) {
+          self.pdfDataRangeTransport.abort();
+          self.pdfDataRangeTransport = null;
+        }
+        if (self.messageHandler) {
+          self.messageHandler.destroy();
+          self.messageHandler = null;
+        }
+        self.destroyCapability.resolve();
+      }, this.destroyCapability.reject);
+      return this.destroyCapability.promise;
+    },
+
+    setupMessageHandler:
+      function WorkerTransport_setupMessageHandler() {
+      var messageHandler = this.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
+          });
+        });
+
+        pdfDataRangeTransport.addProgressiveReadListener(function(chunk) {
+          messageHandler.send('OnDataRange', {
+            chunk: chunk
+          });
+        });
+
+        messageHandler.on('RequestDataRange',
+          function transportDataRange(data) {
+            pdfDataRangeTransport.requestDataRange(data.begin, data.end);
+          }, this);
+      }
+
+      messageHandler.on('GetDoc', function transportDoc(data) {
+        var pdfInfo = data.pdfInfo;
+        this.numPages = data.pdfInfo.numPages;
+        var loadingTask = this.loadingTask;
+        var pdfDocument = new PDFDocumentProxy(pdfInfo, this, loadingTask);
+        this.pdfDocument = pdfDocument;
+        loadingTask._capability.resolve(pdfDocument);
+      }, this);
+
+      messageHandler.on('NeedPassword',
+                        function transportNeedPassword(exception) {
+        var loadingTask = this.loadingTask;
+        if (loadingTask.onPassword) {
+          return loadingTask.onPassword(updatePassword,
+                                        PasswordResponses.NEED_PASSWORD);
+        }
+        loadingTask._capability.reject(
+          new PasswordException(exception.message, exception.code));
+      }, this);
+
+      messageHandler.on('IncorrectPassword',
+                        function transportIncorrectPassword(exception) {
+        var loadingTask = this.loadingTask;
+        if (loadingTask.onPassword) {
+          return loadingTask.onPassword(updatePassword,
+                                        PasswordResponses.INCORRECT_PASSWORD);
+        }
+        loadingTask._capability.reject(
+          new PasswordException(exception.message, exception.code));
+      }, this);
+
+      messageHandler.on('InvalidPDF', function transportInvalidPDF(exception) {
+        this.loadingTask._capability.reject(
+          new InvalidPDFException(exception.message));
+      }, this);
+
+      messageHandler.on('MissingPDF', function transportMissingPDF(exception) {
+        this.loadingTask._capability.reject(
+          new MissingPDFException(exception.message));
+      }, this);
+
+      messageHandler.on('UnexpectedResponse',
+                        function transportUnexpectedResponse(exception) {
+        this.loadingTask._capability.reject(
+          new UnexpectedResponseException(exception.message, exception.status));
+      }, this);
+
+      messageHandler.on('UnknownError',
+                        function transportUnknownError(exception) {
+        this.loadingTask._capability.reject(
+          new UnknownErrorException(exception.message, exception.details));
+      }, this);
+
+      messageHandler.on('DataLoaded', function transportPage(data) {
+        this.downloadInfoCapability.resolve(data);
+      }, this);
+
+      messageHandler.on('PDFManagerReady', function transportPage(data) {
+        if (this.pdfDataRangeTransport) {
+          this.pdfDataRangeTransport.transportReady();
+        }
+      }, this);
+
+      messageHandler.on('StartRenderPage', function transportRender(data) {
+        if (this.destroyed) {
+          return; // Ignore any pending requests if the worker was terminated.
+        }
+        var page = this.pageCache[data.pageIndex];
+
+        page.stats.timeEnd('Page Request');
+        page._startRenderPage(data.transparency, data.intent);
+      }, this);
+
+      messageHandler.on('RenderPageChunk', function transportRender(data) {
+        if (this.destroyed) {
+          return; // Ignore any pending requests if the worker was terminated.
+        }
+        var page = this.pageCache[data.pageIndex];
+
+        page._renderPageChunk(data.operatorList, data.intent);
+      }, this);
+
+      messageHandler.on('commonobj', function transportObj(data) {
+        if (this.destroyed) {
+          return; // Ignore any pending requests if the worker was terminated.
+        }
+
+        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 {
+              var fontRegistry = null;
+              if (getDefaultSetting('pdfBug') && globalScope.FontInspector &&
+                  globalScope['FontInspector'].enabled) {
+                fontRegistry = {
+                  registerFont: function (font, url) {
+                    globalScope['FontInspector'].fontAdded(font, url);
+                  }
+                };
+              }
+              font = new FontFaceObject(exportedData, {
+                isEvalSuported: getDefaultSetting('isEvalSupported'),
+                disableFontFace: getDefaultSetting('disableFontFace'),
+                fontRegistry: fontRegistry
+              });
+            }
+
+            this.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) {
+        if (this.destroyed) {
+          return; // Ignore any pending requests if the worker was terminated.
+        }
+
+        var id = data[0];
+        var pageIndex = data[1];
+        var type = data[2];
+        var pageProxy = this.pageCache[pageIndex];
+        var imageData;
+        if (pageProxy.objs.hasData(id)) {
+          return;
+        }
+
+        switch (type) {
+          case 'JpegStream':
+            imageData = data[3];
+            loadJpegStream(id, imageData, pageProxy.objs);
+            break;
+          case 'Image':
+            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 (imageData && '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.destroyed) {
+          return; // Ignore any pending requests if the worker was terminated.
+        }
+
+        var loadingTask = this.loadingTask;
+        if (loadingTask.onProgress) {
+          loadingTask.onProgress({
+            loaded: data.loaded,
+            total: data.total
+          });
+        }
+      }, this);
+
+      messageHandler.on('PageError', function transportError(data) {
+        if (this.destroyed) {
+          return; // Ignore any pending requests if the worker was terminated.
+        }
+
+        var page = this.pageCache[data.pageNum - 1];
+        var intentState = page.intentStates[data.intent];
+
+        if (intentState.displayReadyCapability) {
+          intentState.displayReadyCapability.reject(data.error);
+        } else {
+          error(data.error);
+        }
+
+        if (intentState.operatorList) {
+          // Mark operator list as complete.
+          intentState.operatorList.lastChunk = true;
+          for (var i = 0; i < intentState.renderTasks.length; i++) {
+            intentState.renderTasks[i].operatorListChanged();
+          }
+        }
+      }, this);
+
+      messageHandler.on('UnsupportedFeature',
+          function transportUnsupportedFeature(data) {
+        if (this.destroyed) {
+          return; // Ignore any pending requests if the worker was terminated.
+        }
+        var featureId = data.featureId;
+        var loadingTask = this.loadingTask;
+        if (loadingTask.onUnsupportedFeature) {
+          loadingTask.onUnsupportedFeature(featureId);
+        }
+        _UnsupportedManager.notify(featureId);
+      }, this);
+
+      messageHandler.on('JpegDecode', function(data) {
+        if (this.destroyed) {
+          return Promise.reject('Worker was terminated');
+        }
+
+        var imageUrl = data[0];
+        var components = data[1];
+        if (components !== 3 && components !== 1) {
+          return Promise.reject(
+            new Error('Only 3 components or 1 component can be returned'));
+        }
+
+        return new Promise(function (resolve, reject) {
+          var img = new Image();
+          img.onload = function () {
+            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;
+            var i, j;
+
+            if (components === 3) {
+              for (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 (i = 0, j = 0; i < rgbaLength; i += 4, j++) {
+                buf[j] = data[i];
+              }
+            }
+            resolve({ data: buf, width: width, height: height});
+          };
+          img.onerror = function () {
+            reject(new Error('JpegDecode failed to load image'));
+          };
+          img.src = imageUrl;
+        });
+      }, this);
+    },
+
+    getData: function WorkerTransport_getData() {
+      return this.messageHandler.sendWithPromise('GetData', null);
+    },
+
+    getPage: function WorkerTransport_getPage(pageNumber, capability) {
+      if (pageNumber <= 0 || pageNumber > this.numPages ||
+          (pageNumber|0) !== pageNumber) {
+        return Promise.reject(new Error('Invalid page request'));
+      }
+
+      var pageIndex = pageNumber - 1;
+      if (pageIndex in this.pagePromises) {
+        return this.pagePromises[pageIndex];
+      }
+      var promise = this.messageHandler.sendWithPromise('GetPage', {
+        pageIndex: pageIndex
+      }).then(function (pageInfo) {
+        if (this.destroyed) {
+          throw new Error('Transport destroyed');
+        }
+        var page = new PDFPageProxy(pageIndex, pageInfo, this);
+        this.pageCache[pageIndex] = page;
+        return page;
+      }.bind(this));
+      this.pagePromises[pageIndex] = promise;
+      return promise;
+    },
+
+    getPageIndex: function WorkerTransport_getPageIndexByRef(ref) {
+      return this.messageHandler.sendWithPromise('GetPageIndex', { ref: ref });
+    },
+
+    getAnnotations: function WorkerTransport_getAnnotations(pageIndex, intent) {
+      return this.messageHandler.sendWithPromise('GetAnnotations', {
+        pageIndex: pageIndex,
+        intent: intent,
+      });
+    },
+
+    getDestinations: function WorkerTransport_getDestinations() {
+      return this.messageHandler.sendWithPromise('GetDestinations', null);
+    },
+
+    getDestination: function WorkerTransport_getDestination(id) {
+      return this.messageHandler.sendWithPromise('GetDestination', { id: id });
+    },
+
+    getPageLabels: function WorkerTransport_getPageLabels() {
+      return this.messageHandler.sendWithPromise('GetPageLabels', null);
+    },
+
+    getAttachments: function WorkerTransport_getAttachments() {
+      return this.messageHandler.sendWithPromise('GetAttachments', null);
+    },
+
+    getJavaScript: function WorkerTransport_getJavaScript() {
+      return this.messageHandler.sendWithPromise('GetJavaScript', null);
+    },
+
+    getOutline: function WorkerTransport_getOutline() {
+      return this.messageHandler.sendWithPromise('GetOutline', null);
+    },
+
+    getMetadata: function WorkerTransport_getMetadata() {
+      return this.messageHandler.sendWithPromise('GetMetadata', null).
+        then(function transportMetadata(results) {
+        return {
+          info: results[0],
+          metadata: (results[1] ? new Metadata(results[1]) : null)
+        };
+      });
+    },
+
+    getStats: function WorkerTransport_getStats() {
+      return this.messageHandler.sendWithPromise('GetStats', null);
+    },
+
+    startCleanup: function WorkerTransport_startCleanup() {
+      this.messageHandler.sendWithPromise('Cleanup', null).
+        then(function endCleanup() {
+        for (var i = 0, ii = this.pageCache.length; i < ii; i++) {
+          var page = this.pageCache[i];
+          if (page) {
+            page.cleanup();
+          }
+        }
+        this.commonObjs.clear();
+        this.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.
+ * @ignore
+ */
+var PDFObjects = (function PDFObjectsClosure() {
+  function PDFObjects() {
+    this.objs = Object.create(null);
+  }
+
+  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 = {
+        capability: createPromiseCapability(),
+        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).capability.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.capability.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 = Object.create(null);
+    }
+  };
+  return PDFObjects;
+})();
+
+/**
+ * Allows controlling of the rendering tasks.
+ * @class
+ * @alias RenderTask
+ */
+var RenderTask = (function RenderTaskClosure() {
+  function RenderTask(internalRenderTask) {
+    this._internalRenderTask = internalRenderTask;
+
+    /**
+     * Callback for incremental rendering -- a function that will be called
+     * each time the rendering is paused.  To continue rendering call the
+     * function that is the first argument to the callback.
+     * @type {function}
+     */
+    this.onContinue = null;
+  }
+
+  RenderTask.prototype = /** @lends RenderTask.prototype */ {
+    /**
+     * Promise for rendering task completion.
+     * @return {Promise}
+     */
+    get promise() {
+      return this._internalRenderTask.capability.promise;
+    },
+
+    /**
+     * Cancels the rendering task. If the task is currently rendering it will
+     * not be cancelled until graphics pauses with a timeout. The promise that
+     * this object extends will resolved when cancelled.
+     */
+    cancel: function RenderTask_cancel() {
+      this._internalRenderTask.cancel();
+    },
+
+    /**
+     * Registers callbacks to indicate the rendering task completion.
+     *
+     * @param {function} onFulfilled The callback for the rendering completion.
+     * @param {function} onRejected The callback for the rendering failure.
+     * @return {Promise} A promise that is resolved after the onFulfilled or
+     *                   onRejected callback.
+     */
+    then: function RenderTask_then(onFulfilled, onRejected) {
+      return this.promise.then.apply(this.promise, arguments);
+    }
+  };
+
+  return RenderTask;
+})();
+
+/**
+ * For internal use only.
+ * @ignore
+ */
+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.useRequestAnimationFrame = false;
+    this.cancelled = false;
+    this.capability = createPromiseCapability();
+    this.task = new RenderTask(this);
+    // caching this-bound methods
+    this._continueBound = this._continue.bind(this);
+    this._scheduleNextBound = this._scheduleNext.bind(this);
+    this._nextBound = this._next.bind(this);
+  }
+
+  InternalRenderTask.prototype = {
+
+    initalizeGraphics:
+        function InternalRenderTask_initalizeGraphics(transparency) {
+
+      if (this.cancelled) {
+        return;
+      }
+      if (getDefaultSetting('pdfBug') && globalScope.StepperManager &&
+          globalScope.StepperManager.enabled) {
+        this.stepper = globalScope.StepperManager.create(this.pageNumber - 1);
+        this.stepper.init(this.operatorList);
+        this.stepper.nextBreakPoint = this.stepper.getNextBreakPoint();
+      }
+
+      var params = this.params;
+      this.gfx = new CanvasGraphics(params.canvasContext, this.commonObjs,
+                                    this.objs, params.imageLayer);
+
+      this.gfx.beginDrawing(params.transform, 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._continueBound;
+        }
+        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.task.onContinue) {
+        this.task.onContinue.call(this.task, this._scheduleNextBound);
+      } else {
+        this._scheduleNext();
+      }
+    },
+
+    _scheduleNext: function InternalRenderTask__scheduleNext() {
+      if (this.useRequestAnimationFrame && typeof window !== 'undefined') {
+        window.requestAnimationFrame(this._nextBound);
+      } else {
+        Promise.resolve(undefined).then(this._nextBound);
+      }
+    },
+
+    _next: function InternalRenderTask__next() {
+      if (this.cancelled) {
+        return;
+      }
+      this.operatorListIdx = this.gfx.executeOperatorList(this.operatorList,
+                                        this.operatorListIdx,
+                                        this._continueBound,
+                                        this.stepper);
+      if (this.operatorListIdx === this.operatorList.argsArray.length) {
+        this.running = false;
+        if (this.operatorList.lastChunk) {
+          this.gfx.endDrawing();
+          this.callback();
+        }
+      }
+    }
+
+  };
+
+  return InternalRenderTask;
+})();
+
+/**
+ * (Deprecated) Global observer of unsupported feature usages. Use
+ * onUnsupportedFeature callback of the {PDFDocumentLoadingTask} instance.
+ */
+var _UnsupportedManager = (function UnsupportedManagerClosure() {
+  var listeners = [];
+  return {
+    listen: function (cb) {
+      deprecated('Global UnsupportedManager.listen is used: ' +
+                 ' use PDFDocumentLoadingTask.onUnsupportedFeature instead');
+      listeners.push(cb);
+    },
+    notify: function (featureId) {
+      for (var i = 0, ii = listeners.length; i < ii; i++) {
+        listeners[i](featureId);
+      }
+    }
+  };
+})();
+
+if (typeof pdfjsVersion !== 'undefined') {
+  exports.version = pdfjsVersion;
+}
+if (typeof pdfjsBuild !== 'undefined') {
+  exports.build = pdfjsBuild;
+}
+
+exports.getDocument = getDocument;
+exports.PDFDataRangeTransport = PDFDataRangeTransport;
+exports.PDFWorker = PDFWorker;
+exports.PDFDocumentProxy = PDFDocumentProxy;
+exports.PDFPageProxy = PDFPageProxy;
+exports._UnsupportedManager = _UnsupportedManager;
+}));
+
+
+(function (root, factory) {
+  {
+    factory((root.pdfjsDisplayGlobal = {}), root.pdfjsSharedUtil,
+      root.pdfjsDisplayDOMUtils, root.pdfjsDisplayAPI,
+      root.pdfjsDisplayAnnotationLayer, root.pdfjsDisplayTextLayer,
+      root.pdfjsDisplayMetadata, root.pdfjsDisplaySVG);
+  }
+}(this, function (exports, sharedUtil, displayDOMUtils, displayAPI,
+                  displayAnnotationLayer, displayTextLayer, displayMetadata,
+                  displaySVG) {
+
+  var globalScope = sharedUtil.globalScope;
+  var deprecated = sharedUtil.deprecated;
+  var warn = sharedUtil.warn;
+  var LinkTarget = displayDOMUtils.LinkTarget;
+
+  var isWorker = (typeof window === 'undefined');
+
+  // The global PDFJS object is now deprecated and will not be supported in
+  // the future. The members below are maintained for backward  compatibility
+  // and shall not be extended or modified. If the global.js is included as
+  // a module, we will create a global PDFJS object instance or use existing.
+  if (!globalScope.PDFJS) {
+    globalScope.PDFJS = {};
+  }
+  var PDFJS = globalScope.PDFJS;
+
+  if (typeof pdfjsVersion !== 'undefined') {
+    PDFJS.version = pdfjsVersion;
+  }
+  if (typeof pdfjsBuild !== 'undefined') {
+    PDFJS.build = pdfjsBuild;
+  }
+
+  PDFJS.pdfBug = false;
+
+  if (PDFJS.verbosity !== undefined) {
+    sharedUtil.setVerbosityLevel(PDFJS.verbosity);
+  }
+  delete PDFJS.verbosity;
+  Object.defineProperty(PDFJS, 'verbosity', {
+    get: function () { return sharedUtil.getVerbosityLevel(); },
+    set: function (level) { sharedUtil.setVerbosityLevel(level); },
+    enumerable: true,
+    configurable: true
+  });
+
+  PDFJS.VERBOSITY_LEVELS = sharedUtil.VERBOSITY_LEVELS;
+  PDFJS.OPS = sharedUtil.OPS;
+  PDFJS.UNSUPPORTED_FEATURES = sharedUtil.UNSUPPORTED_FEATURES;
+  PDFJS.isValidUrl = sharedUtil.isValidUrl;
+  PDFJS.shadow = sharedUtil.shadow;
+  PDFJS.createBlob = sharedUtil.createBlob;
+  PDFJS.createObjectURL = function PDFJS_createObjectURL(data, contentType) {
+    return sharedUtil.createObjectURL(data, contentType,
+                                      PDFJS.disableCreateObjectURL);
+  };
+  Object.defineProperty(PDFJS, 'isLittleEndian', {
+    configurable: true,
+    get: function PDFJS_isLittleEndian() {
+      var value = sharedUtil.isLittleEndian();
+      return sharedUtil.shadow(PDFJS, 'isLittleEndian', value);
+    }
+  });
+  PDFJS.removeNullCharacters = sharedUtil.removeNullCharacters;
+  PDFJS.PasswordResponses = sharedUtil.PasswordResponses;
+  PDFJS.PasswordException = sharedUtil.PasswordException;
+  PDFJS.UnknownErrorException = sharedUtil.UnknownErrorException;
+  PDFJS.InvalidPDFException = sharedUtil.InvalidPDFException;
+  PDFJS.MissingPDFException = sharedUtil.MissingPDFException;
+  PDFJS.UnexpectedResponseException = sharedUtil.UnexpectedResponseException;
+  PDFJS.Util = sharedUtil.Util;
+  PDFJS.PageViewport = sharedUtil.PageViewport;
+  PDFJS.createPromiseCapability = sharedUtil.createPromiseCapability;
+
+  /**
+   * 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);
+
+  /**
+   * The url of where the predefined Adobe CMaps are located. Include trailing
+   * slash.
+   * @var {string}
+   */
+  PDFJS.cMapUrl = (PDFJS.cMapUrl === undefined ? null : PDFJS.cMapUrl);
+
+  /**
+   * Specifies if CMaps are binary packed.
+   * @var {boolean}
+   */
+  PDFJS.cMapPacked = PDFJS.cMapPacked === undefined ? false : PDFJS.cMapPacked;
+
+  /**
+   * 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. It is recommended
+   * that the workerSrc is set in a custom application to prevent issues caused
+   * by third-party frameworks and libraries.
+   * @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 streaming of PDF file data. By default PDF.js attempts to load PDF
+   * in chunks. This default behavior can be disabled.
+   * @var {boolean}
+   */
+  PDFJS.disableStream = (PDFJS.disableStream === undefined ?
+                         false : PDFJS.disableStream);
+
+  /**
+   * 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.
+   *
+   * NOTE: It is also necessary to disable streaming, see above,
+   *       in order for disabling of pre-fetching to work correctly.
+   * @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);
+
+  /**
+   * Disables URL.createObjectURL usage.
+   * @var {boolean}
+   */
+  PDFJS.disableCreateObjectURL = (PDFJS.disableCreateObjectURL === undefined ?
+                                  false : PDFJS.disableCreateObjectURL);
+
+  /**
+   * Disables WebGL usage.
+   * @var {boolean}
+   */
+  PDFJS.disableWebGL = (PDFJS.disableWebGL === undefined ?
+                        true : PDFJS.disableWebGL);
+
+  /**
+   * Specifies the |target| attribute for external links.
+   * The constants from PDFJS.LinkTarget should be used:
+   *  - NONE [default]
+   *  - SELF
+   *  - BLANK
+   *  - PARENT
+   *  - TOP
+   * @var {number}
+   */
+  PDFJS.externalLinkTarget = (PDFJS.externalLinkTarget === undefined ?
+                              LinkTarget.NONE : PDFJS.externalLinkTarget);
+
+  /**
+   * Specifies the |rel| attribute for external links. Defaults to stripping
+   * the referrer.
+   * @var {string}
+   */
+  PDFJS.externalLinkRel = (PDFJS.externalLinkRel === undefined ?
+                           'noreferrer' : PDFJS.externalLinkRel);
+
+  /**
+    * Determines if we can eval strings as JS. Primarily used to improve
+    * performance for font rendering.
+    * @var {boolean}
+    */
+  PDFJS.isEvalSupported = (PDFJS.isEvalSupported === undefined ?
+                           true : PDFJS.isEvalSupported);
+
+  var savedOpenExternalLinksInNewWindow = PDFJS.openExternalLinksInNewWindow;
+  delete PDFJS.openExternalLinksInNewWindow;
+  Object.defineProperty(PDFJS, 'openExternalLinksInNewWindow', {
+    get: function () {
+      return PDFJS.externalLinkTarget === LinkTarget.BLANK;
+    },
+    set: function (value) {
+      if (value) {
+        deprecated('PDFJS.openExternalLinksInNewWindow, please use ' +
+          '"PDFJS.externalLinkTarget = PDFJS.LinkTarget.BLANK" instead.');
+      }
+      if (PDFJS.externalLinkTarget !== LinkTarget.NONE) {
+        warn('PDFJS.externalLinkTarget is already initialized');
+        return;
+      }
+      PDFJS.externalLinkTarget = value ? LinkTarget.BLANK : LinkTarget.NONE;
+    },
+    enumerable: true,
+    configurable: true
+  });
+  if (savedOpenExternalLinksInNewWindow) {
+    /**
+     * (Deprecated) Opens external links in a new window if enabled.
+     * The default behavior opens external links in the PDF.js window.
+     *
+     * NOTE: This property has been deprecated, please use
+     *       `PDFJS.externalLinkTarget = PDFJS.LinkTarget.BLANK` instead.
+     * @var {boolean}
+     */
+    PDFJS.openExternalLinksInNewWindow = savedOpenExternalLinksInNewWindow;
+  }
+
+  PDFJS.getDocument = displayAPI.getDocument;
+  PDFJS.PDFDataRangeTransport = displayAPI.PDFDataRangeTransport;
+  PDFJS.PDFWorker = displayAPI.PDFWorker;
+
+  Object.defineProperty(PDFJS, 'hasCanvasTypedArrays', {
+    configurable: true,
+    get: function PDFJS_hasCanvasTypedArrays() {
+      var value = displayDOMUtils.hasCanvasTypedArrays();
+      return sharedUtil.shadow(PDFJS, 'hasCanvasTypedArrays', value);
+    }
+  });
+  PDFJS.CustomStyle = displayDOMUtils.CustomStyle;
+  PDFJS.LinkTarget = LinkTarget;
+  PDFJS.addLinkAttributes = displayDOMUtils.addLinkAttributes;
+  PDFJS.getFilenameFromUrl = displayDOMUtils.getFilenameFromUrl;
+  PDFJS.isExternalLinkTargetSet = displayDOMUtils.isExternalLinkTargetSet;
+
+  PDFJS.AnnotationLayer = displayAnnotationLayer.AnnotationLayer;
+
+  PDFJS.renderTextLayer = displayTextLayer.renderTextLayer;
+
+  PDFJS.Metadata = displayMetadata.Metadata;
+
+  PDFJS.SVGGraphics = displaySVG.SVGGraphics;
+
+  PDFJS.UnsupportedManager = displayAPI._UnsupportedManager;
+
+  exports.globalScope = globalScope;
+  exports.isWorker = isWorker;
+  exports.PDFJS = globalScope.PDFJS;
+}));
+
+
+  }).call(pdfjsLibs);
+
+  exports.PDFJS = pdfjsLibs.pdfjsDisplayGlobal.PDFJS;
+  exports.build = pdfjsLibs.pdfjsDisplayAPI.build;
+  exports.version = pdfjsLibs.pdfjsDisplayAPI.version;
+  exports.getDocument = pdfjsLibs.pdfjsDisplayAPI.getDocument;
+  exports.PDFDataRangeTransport =
+    pdfjsLibs.pdfjsDisplayAPI.PDFDataRangeTransport;
+  exports.PDFWorker = pdfjsLibs.pdfjsDisplayAPI.PDFWorker;
+  exports.renderTextLayer = pdfjsLibs.pdfjsDisplayTextLayer.renderTextLayer;
+  exports.AnnotationLayer =
+    pdfjsLibs.pdfjsDisplayAnnotationLayer.AnnotationLayer;
+  exports.CustomStyle = pdfjsLibs.pdfjsDisplayDOMUtils.CustomStyle;
+  exports.PasswordResponses = pdfjsLibs.pdfjsSharedUtil.PasswordResponses;
+  exports.InvalidPDFException = pdfjsLibs.pdfjsSharedUtil.InvalidPDFException;
+  exports.MissingPDFException = pdfjsLibs.pdfjsSharedUtil.MissingPDFException;
+  exports.SVGGraphics = pdfjsLibs.pdfjsDisplaySVG.SVGGraphics;
+  exports.UnexpectedResponseException =
+    pdfjsLibs.pdfjsSharedUtil.UnexpectedResponseException;
+  exports.OPS = pdfjsLibs.pdfjsSharedUtil.OPS;
+  exports.UNSUPPORTED_FEATURES = pdfjsLibs.pdfjsSharedUtil.UNSUPPORTED_FEATURES;
+  exports.isValidUrl = pdfjsLibs.pdfjsSharedUtil.isValidUrl;
+  exports.createObjectURL = pdfjsLibs.pdfjsSharedUtil.createObjectURL;
+  exports.removeNullCharacters = pdfjsLibs.pdfjsSharedUtil.removeNullCharacters;
+  exports.shadow = pdfjsLibs.pdfjsSharedUtil.shadow;
+  exports.createBlob = pdfjsLibs.pdfjsSharedUtil.createBlob;
+  exports.getFilenameFromUrl =
+    pdfjsLibs.pdfjsDisplayDOMUtils.getFilenameFromUrl;
+  exports.addLinkAttributes = pdfjsLibs.pdfjsDisplayDOMUtils.addLinkAttributes;
+}));
+
+
