minimiere PDF.js

1 files changed, 3 insertions, 6926 deletions

diff --git a/www/js/pdf.js b/www/js/pdf.js
index 6d7416f..00bce78 100644
--- a/www/js/pdf.js
+++ b/www/js/pdf.js
@@ -1,6926 +1,3 @@
-/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
-/* Copyright 2012 Mozilla Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/*jshint globalstrict: false */
-
-// Initializing PDFJS global object (if still undefined)
-if (typeof PDFJS === 'undefined') {
-  (typeof window !== 'undefined' ? window : this).PDFJS = {};
-}
-
-PDFJS.version = '1.0.276';
-PDFJS.build = 'a09aecb';
-
-(function pdfjsWrapper() {
-  // Use strict in our context only - users might not want it
-  'use strict';
-
-/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
-/* Copyright 2012 Mozilla Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/* globals Cmd, ColorSpace, Dict, MozBlobBuilder, Name, PDFJS, Ref, URL,
-           Promise */
-
-'use strict';
-
-var globalScope = (typeof window === 'undefined') ? this : window;
-
-var isWorker = (typeof window == 'undefined');
-
-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
-};
-
-// The global PDFJS object exposes the API
-// In production, it will be declared outside a global wrapper
-// In development, it will be declared here
-if (!globalScope.PDFJS) {
-  globalScope.PDFJS = {};
-}
-
-globalScope.PDFJS.pdfBug = false;
-
-PDFJS.VERBOSITY_LEVELS = {
-  errors: 0,
-  warnings: 1,
-  infos: 5
-};
-
-// All the possible operations for an operator list.
-var OPS = PDFJS.OPS = {
-  // Intentionally start from 1 so it is easy to spot bad operators that will be
-  // 0's.
-  dependency: 1,
-  setLineWidth: 2,
-  setLineCap: 3,
-  setLineJoin: 4,
-  setMiterLimit: 5,
-  setDash: 6,
-  setRenderingIntent: 7,
-  setFlatness: 8,
-  setGState: 9,
-  save: 10,
-  restore: 11,
-  transform: 12,
-  moveTo: 13,
-  lineTo: 14,
-  curveTo: 15,
-  curveTo2: 16,
-  curveTo3: 17,
-  closePath: 18,
-  rectangle: 19,
-  stroke: 20,
-  closeStroke: 21,
-  fill: 22,
-  eoFill: 23,
-  fillStroke: 24,
-  eoFillStroke: 25,
-  closeFillStroke: 26,
-  closeEOFillStroke: 27,
-  endPath: 28,
-  clip: 29,
-  eoClip: 30,
-  beginText: 31,
-  endText: 32,
-  setCharSpacing: 33,
-  setWordSpacing: 34,
-  setHScale: 35,
-  setLeading: 36,
-  setFont: 37,
-  setTextRenderingMode: 38,
-  setTextRise: 39,
-  moveText: 40,
-  setLeadingMoveText: 41,
-  setTextMatrix: 42,
-  nextLine: 43,
-  showText: 44,
-  showSpacedText: 45,
-  nextLineShowText: 46,
-  nextLineSetSpacingShowText: 47,
-  setCharWidth: 48,
-  setCharWidthAndBounds: 49,
-  setStrokeColorSpace: 50,
-  setFillColorSpace: 51,
-  setStrokeColor: 52,
-  setStrokeColorN: 53,
-  setFillColor: 54,
-  setFillColorN: 55,
-  setStrokeGray: 56,
-  setFillGray: 57,
-  setStrokeRGBColor: 58,
-  setFillRGBColor: 59,
-  setStrokeCMYKColor: 60,
-  setFillCMYKColor: 61,
-  shadingFill: 62,
-  beginInlineImage: 63,
-  beginImageData: 64,
-  endInlineImage: 65,
-  paintXObject: 66,
-  markPoint: 67,
-  markPointProps: 68,
-  beginMarkedContent: 69,
-  beginMarkedContentProps: 70,
-  endMarkedContent: 71,
-  beginCompat: 72,
-  endCompat: 73,
-  paintFormXObjectBegin: 74,
-  paintFormXObjectEnd: 75,
-  beginGroup: 76,
-  endGroup: 77,
-  beginAnnotations: 78,
-  endAnnotations: 79,
-  beginAnnotation: 80,
-  endAnnotation: 81,
-  paintJpegXObject: 82,
-  paintImageMaskXObject: 83,
-  paintImageMaskXObjectGroup: 84,
-  paintImageXObject: 85,
-  paintInlineImageXObject: 86,
-  paintInlineImageXObjectGroup: 87,
-  paintImageXObjectRepeat: 88,
-  paintImageMaskXObjectRepeat: 89,
-  paintSolidColorImageMask: 90,
-  constructPath: 91
-};
-
-// 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 (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.infos) {
-    console.log('Info: ' + msg);
-  }
-}
-
-// Non-fatal warnings.
-function warn(msg) {
-  if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.warnings) {
-    console.log('Warning: ' + msg);
-  }
-}
-
-// Fatal errors that should trigger the fallback UI and halt execution by
-// throwing an exception.
-function error(msg) {
-  // If multiple arguments were passed, pass them all to the log function.
-  if (arguments.length > 1) {
-    var logArguments = ['Error:'];
-    logArguments.push.apply(logArguments, arguments);
-    console.log.apply(console, logArguments);
-    // Join the arguments into a single string for the lines below.
-    msg = [].join.call(arguments, ' ');
-  } else {
-    console.log('Error: ' + msg);
-  }
-  console.log(backtrace());
-  UnsupportedManager.notify(UNSUPPORTED_FEATURES.unknown);
-  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 = PDFJS.UNSUPPORTED_FEATURES = {
-  unknown: 'unknown',
-  forms: 'forms',
-  javaScript: 'javaScript',
-  smask: 'smask',
-  shadingPattern: 'shadingPattern',
-  font: 'font'
-};
-
-var UnsupportedManager = PDFJS.UnsupportedManager =
-  (function UnsupportedManagerClosure() {
-  var listeners = [];
-  return {
-    listen: function (cb) {
-      listeners.push(cb);
-    },
-    notify: function (featureId) {
-      warn('Unsupported feature "' + featureId + '"');
-      for (var i = 0, ii = listeners.length; i < ii; i++) {
-        listeners[i](featureId);
-      }
-    }
-  };
-})();
-
-// Combines two URLs. The baseUrl shall be absolute URL. If the url is an
-// absolute URL, it will be returned as is.
-function combineUrl(baseUrl, url) {
-  if (!url) {
-    return baseUrl;
-  }
-  if (/^[a-z][a-z0-9+\-.]*:/i.test(url)) {
-    return url;
-  }
-  var i;
-  if (url.charAt(0) == '/') {
-    // absolute path
-    i = baseUrl.indexOf('://');
-    if (url.charAt(1) === '/') {
-      ++i;
-    } else {
-      i = baseUrl.indexOf('/', i + 3);
-    }
-    return baseUrl.substring(0, i) + url;
-  } else {
-    // relative path
-    var pathLength = baseUrl.length;
-    i = baseUrl.lastIndexOf('#');
-    pathLength = i >= 0 ? i : pathLength;
-    i = baseUrl.lastIndexOf('?', pathLength);
-    pathLength = i >= 0 ? i : pathLength;
-    var prefixLength = baseUrl.lastIndexOf('/', pathLength);
-    return baseUrl.substring(0, prefixLength + 1) + url;
-  }
-}
-
-// Validates if URL is safe and allowed, e.g. to avoid XSS.
-function isValidUrl(url, allowRelative) {
-  if (!url) {
-    return false;
-  }
-  // 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':
-      return true;
-    default:
-      return false;
-  }
-}
-PDFJS.isValidUrl = isValidUrl;
-
-function shadow(obj, prop, value) {
-  Object.defineProperty(obj, prop, { value: value,
-                                     enumerable: true,
-                                     configurable: true,
-                                     writable: false });
-  return value;
-}
-
-var PasswordResponses = PDFJS.PasswordResponses = {
-  NEED_PASSWORD: 1,
-  INCORRECT_PASSWORD: 2
-};
-
-var PasswordException = (function PasswordExceptionClosure() {
-  function PasswordException(msg, code) {
-    this.name = 'PasswordException';
-    this.message = msg;
-    this.code = code;
-  }
-
-  PasswordException.prototype = new Error();
-  PasswordException.constructor = PasswordException;
-
-  return PasswordException;
-})();
-
-var UnknownErrorException = (function UnknownErrorExceptionClosure() {
-  function UnknownErrorException(msg, details) {
-    this.name = 'UnknownErrorException';
-    this.message = msg;
-    this.details = details;
-  }
-
-  UnknownErrorException.prototype = new Error();
-  UnknownErrorException.constructor = UnknownErrorException;
-
-  return UnknownErrorException;
-})();
-
-var InvalidPDFException = (function InvalidPDFExceptionClosure() {
-  function InvalidPDFException(msg) {
-    this.name = 'InvalidPDFException';
-    this.message = msg;
-  }
-
-  InvalidPDFException.prototype = new Error();
-  InvalidPDFException.constructor = InvalidPDFException;
-
-  return InvalidPDFException;
-})();
-
-var MissingPDFException = (function MissingPDFExceptionClosure() {
-  function MissingPDFException(msg) {
-    this.name = 'MissingPDFException';
-    this.message = msg;
-  }
-
-  MissingPDFException.prototype = new Error();
-  MissingPDFException.constructor = MissingPDFException;
-
-  return MissingPDFException;
-})();
-
-var NotImplementedException = (function NotImplementedExceptionClosure() {
-  function NotImplementedException(msg) {
-    this.message = msg;
-  }
-
-  NotImplementedException.prototype = new Error();
-  NotImplementedException.prototype.name = 'NotImplementedException';
-  NotImplementedException.constructor = NotImplementedException;
-
-  return NotImplementedException;
-})();
-
-var MissingDataException = (function MissingDataExceptionClosure() {
-  function MissingDataException(begin, end) {
-    this.begin = begin;
-    this.end = end;
-    this.message = 'Missing data [' + begin + ', ' + end + ')';
-  }
-
-  MissingDataException.prototype = new Error();
-  MissingDataException.prototype.name = 'MissingDataException';
-  MissingDataException.constructor = MissingDataException;
-
-  return MissingDataException;
-})();
-
-var XRefParseException = (function XRefParseExceptionClosure() {
-  function XRefParseException(msg) {
-    this.message = msg;
-  }
-
-  XRefParseException.prototype = new Error();
-  XRefParseException.prototype.name = 'XRefParseException';
-  XRefParseException.constructor = XRefParseException;
-
-  return XRefParseException;
-})();
-
-
-function bytesToString(bytes) {
-  var 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 stringToArray(str) {
-  var length = str.length;
-  var array = [];
-  for (var i = 0; i < length; ++i) {
-    array[i] = str.charCodeAt(i);
-  }
-  return array;
-}
-
-function stringToBytes(str) {
-  var length = str.length;
-  var bytes = new Uint8Array(length);
-  for (var i = 0; i < length; ++i) {
-    bytes[i] = str.charCodeAt(i) & 0xFF;
-  }
-  return bytes;
-}
-
-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);
-}
-
-Object.defineProperty(PDFJS, 'isLittleEndian', {
-  configurable: true,
-  get: function PDFJS_isLittleEndian() {
-    return shadow(PDFJS, 'isLittleEndian', isLittleEndian());
-  }
-});
-
-  // Lazy test if the userAgant support CanvasTypedArrays
-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');
-}
-
-Object.defineProperty(PDFJS, 'hasCanvasTypedArrays', {
-  configurable: true,
-  get: function PDFJS_hasCanvasTypedArrays() {
-    return shadow(PDFJS, 'hasCanvasTypedArrays', hasCanvasTypedArrays());
-  }
-});
-
-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;
-})();
-
-var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
-
-var Util = PDFJS.Util = (function UtilClosure() {
-  function Util() {}
-
-  Util.makeCssRgb = function Util_makeCssRgb(rgb) {
-    return 'rgb(' + rgb[0] + ',' + rgb[1] + ',' + rgb[2] + ')';
-  };
-
-  // Concatenates two transformation matrices together and returns the result.
-  Util.transform = function Util_transform(m1, m2) {
-    return [
-      m1[0] * m2[0] + m1[2] * m2[1],
-      m1[1] * m2[0] + m1[3] * m2[1],
-      m1[0] * m2[2] + m1[2] * m2[3],
-      m1[1] * m2[2] + m1[3] * m2[3],
-      m1[0] * m2[4] + m1[2] * m2[5] + m1[4],
-      m1[1] * m2[4] + m1[3] * m2[5] + m1[5]
-    ];
-  };
-
-  // For 2d affine transforms
-  Util.applyTransform = function Util_applyTransform(p, m) {
-    var xt = p[0] * m[0] + p[1] * m[2] + m[4];
-    var yt = p[0] * m[1] + p[1] * m[3] + m[5];
-    return [xt, yt];
-  };
-
-  Util.applyInverseTransform = function Util_applyInverseTransform(p, m) {
-    var d = m[0] * m[3] - m[1] * m[2];
-    var xt = (p[0] * m[3] - p[1] * m[2] + m[2] * m[5] - m[4] * m[3]) / d;
-    var yt = (-p[0] * m[1] + p[1] * m[0] + m[4] * m[1] - m[5] * m[0]) / d;
-    return [xt, yt];
-  };
-
-  // Applies the transform to the rectangle and finds the minimum axially
-  // aligned bounding box.
-  Util.getAxialAlignedBoundingBox =
-    function Util_getAxialAlignedBoundingBox(r, m) {
-
-    var p1 = Util.applyTransform(r, m);
-    var p2 = Util.applyTransform(r.slice(2, 4), m);
-    var p3 = Util.applyTransform([r[0], r[3]], m);
-    var p4 = Util.applyTransform([r[2], r[1]], m);
-    return [
-      Math.min(p1[0], p2[0], p3[0], p4[0]),
-      Math.min(p1[1], p2[1], p3[1], p4[1]),
-      Math.max(p1[0], p2[0], p3[0], p4[0]),
-      Math.max(p1[1], p2[1], p3[1], p4[1])
-    ];
-  };
-
-  Util.inverseTransform = function Util_inverseTransform(m) {
-    var d = m[0] * m[3] - m[1] * m[2];
-    return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d,
-      (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d];
-  };
-
-  // Apply a generic 3d matrix M on a 3-vector v:
-  //   | a b c |   | X |
-  //   | d e f | x | Y |
-  //   | g h i |   | Z |
-  // M is assumed to be serialized as [a,b,c,d,e,f,g,h,i],
-  // with v as [X,Y,Z]
-  Util.apply3dTransform = function Util_apply3dTransform(m, v) {
-    return [
-      m[0] * v[0] + m[1] * v[1] + m[2] * v[2],
-      m[3] * v[0] + m[4] * v[1] + m[5] * v[2],
-      m[6] * v[0] + m[7] * v[1] + m[8] * v[2]
-    ];
-  };
-
-  // This calculation uses Singular Value Decomposition.
-  // The SVD can be represented with formula A = USV. We are interested in the
-  // matrix S here because it represents the scale values.
-  Util.singularValueDecompose2dScale =
-    function Util_singularValueDecompose2dScale(m) {
-
-    var transpose = [m[0], m[2], m[1], m[3]];
-
-    // Multiply matrix m with its transpose.
-    var a = m[0] * transpose[0] + m[1] * transpose[2];
-    var b = m[0] * transpose[1] + m[1] * transpose[3];
-    var c = m[2] * transpose[0] + m[3] * transpose[2];
-    var d = m[2] * transpose[1] + m[3] * transpose[3];
-
-    // Solve the second degree polynomial to get roots.
-    var first = (a + d) / 2;
-    var second = Math.sqrt((a + d) * (a + d) - 4 * (a * d - c * b)) / 2;
-    var sx = first + second || 1;
-    var sy = first - second || 1;
-
-    // Scale values are the square roots of the eigenvalues.
-    return [Math.sqrt(sx), Math.sqrt(sy)];
-  };
-
-  // Normalize rectangle rect=[x1, y1, x2, y2] so that (x1,y1) < (x2,y2)
-  // For coordinate systems whose origin lies in the bottom-left, this
-  // means normalization to (BL,TR) ordering. For systems with origin in the
-  // top-left, this means (TL,BR) ordering.
-  Util.normalizeRect = function Util_normalizeRect(rect) {
-    var r = rect.slice(0); // clone rect
-    if (rect[0] > rect[2]) {
-      r[0] = rect[2];
-      r[2] = rect[0];
-    }
-    if (rect[1] > rect[3]) {
-      r[1] = rect[3];
-      r[3] = rect[1];
-    }
-    return r;
-  };
-
-  // Returns a rectangle [x1, y1, x2, y2] corresponding to the
-  // intersection of rect1 and rect2. If no intersection, returns 'false'
-  // The rectangle coordinates of rect1, rect2 should be [x1, y1, x2, y2]
-  Util.intersect = function Util_intersect(rect1, rect2) {
-    function compare(a, b) {
-      return a - b;
-    }
-
-    // Order points along the axes
-    var orderedX = [rect1[0], rect1[2], rect2[0], rect2[2]].sort(compare),
-        orderedY = [rect1[1], rect1[3], rect2[1], rect2[3]].sort(compare),
-        result = [];
-
-    rect1 = Util.normalizeRect(rect1);
-    rect2 = Util.normalizeRect(rect2);
-
-    // X: first and second points belong to different rectangles?
-    if ((orderedX[0] === rect1[0] && orderedX[1] === rect2[0]) ||
-        (orderedX[0] === rect2[0] && orderedX[1] === rect1[0])) {
-      // Intersection must be between second and third points
-      result[0] = orderedX[1];
-      result[2] = orderedX[2];
-    } else {
-      return false;
-    }
-
-    // Y: first and second points belong to different rectangles?
-    if ((orderedY[0] === rect1[1] && orderedY[1] === rect2[1]) ||
-        (orderedY[0] === rect2[1] && orderedY[1] === rect1[1])) {
-      // Intersection must be between second and third points
-      result[1] = orderedY[1];
-      result[3] = orderedY[2];
-    } else {
-      return false;
-    }
-
-    return result;
-  };
-
-  Util.sign = function Util_sign(num) {
-    return num < 0 ? -1 : 1;
-  };
-
-  // TODO(mack): Rename appendToArray
-  Util.concatenateToArray = function concatenateToArray(arr1, arr2) {
-    Array.prototype.push.apply(arr1, arr2);
-  };
-
-  Util.prependToArray = function concatenateToArray(arr1, arr2) {
-    Array.prototype.unshift.apply(arr1, arr2);
-  };
-
-  Util.extendObj = function extendObj(obj1, obj2) {
-    for (var key in obj2) {
-      obj1[key] = obj2[key];
-    }
-  };
-
-  Util.getInheritableProperty = function Util_getInheritableProperty(dict,
-                                                                     name) {
-    while (dict && !dict.has(name)) {
-      dict = dict.get('Parent');
-    }
-    if (!dict) {
-      return null;
-    }
-    return dict.get(name);
-  };
-
-  Util.inherit = function Util_inherit(sub, base, prototype) {
-    sub.prototype = Object.create(base.prototype);
-    sub.prototype.constructor = sub;
-    for (var prop in prototype) {
-      sub.prototype[prop] = prototype[prop];
-    }
-  };
-
-  Util.loadScript = function Util_loadScript(src, callback) {
-    var script = document.createElement('script');
-    var loaded = false;
-    script.setAttribute('src', src);
-    if (callback) {
-      script.onload = function() {
-        if (!loaded) {
-          callback();
-        }
-        loaded = true;
-      };
-    }
-    document.getElementsByTagName('head')[0].appendChild(script);
-  };
-
-  return Util;
-})();
-
-/**
- * PDF page viewport created based on scale, rotation and offset.
- * @class
- * @alias PDFJS.PageViewport
- */
-var PageViewport = PDFJS.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 PDFJS.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 {PDFJS.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 isEmptyObj(obj) {
-  for (var key in obj) {
-    return false;
-  }
-  return true;
-}
-
-function isBool(v) {
-  return typeof v == 'boolean';
-}
-
-function isInt(v) {
-  return typeof v == 'number' && ((v | 0) == v);
-}
-
-function isNum(v) {
-  return typeof v == 'number';
-}
-
-function isString(v) {
-  return typeof v == 'string';
-}
-
-function isNull(v) {
-  return v === null;
-}
-
-function isName(v) {
-  return v instanceof Name;
-}
-
-function isCmd(v, cmd) {
-  return v instanceof Cmd && (!cmd || v.cmd == cmd);
-}
-
-function isDict(v, type) {
-  if (!(v instanceof Dict)) {
-    return false;
-  }
-  if (!type) {
-    return true;
-  }
-  var dictType = v.get('Type');
-  return isName(dictType) && dictType.name == type;
-}
-
-function isArray(v) {
-  return v instanceof Array;
-}
-
-function isStream(v) {
-  return typeof v == 'object' && v !== null && v !== undefined &&
-         ('getBytes' in v);
-}
-
-function isArrayBuffer(v) {
-  return typeof v == 'object' && v !== null && v !== undefined &&
-         ('byteLength' in v);
-}
-
-function isRef(v) {
-  return v instanceof Ref;
-}
-
-/**
- * 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 PDFJS.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;
-}
-
-PDFJS.createPromiseCapability = createPromiseCapability;
-
-/**
- * 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 = reject;
-        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 = {};
-    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;
-})();
-
-PDFJS.createBlob = function createBlob(data, contentType) {
-  if (typeof Blob !== 'undefined') {
-    return new Blob([data], { type: contentType });
-  }
-  // Blob builder is deprecated in FF14 and removed in FF18.
-  var bb = new MozBlobBuilder();
-  bb.append(data);
-  return bb.getBlob(contentType);
-};
-
-PDFJS.createObjectURL = (function createObjectURLClosure() {
-  // Blob/createObjectURL is not available, falling back to data schema.
-  var digits =
-    'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
-
-  return function createObjectURL(data, contentType) {
-    if (!PDFJS.disableCreateObjectURL &&
-        typeof URL !== 'undefined' && URL.createObjectURL) {
-      var blob = PDFJS.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(name, comObj) {
-  this.name = name;
-  this.comObj = comObj;
-  this.callbackIndex = 1;
-  this.postMessageTransfers = true;
-  var callbacksCapabilities = this.callbacksCapabilities = {};
-  var ah = this.actionHandler = {};
-
-  ah['console_log'] = [function ahConsoleLog(data) {
-    console.log.apply(console, data);
-  }];
-  ah['console_error'] = [function ahConsoleError(data) {
-    console.error.apply(console, data);
-  }];
-  ah['_unsupported_feature'] = [function ah_unsupportedFeature(data) {
-    UnsupportedManager.notify(data);
-  }];
-
-  comObj.onmessage = function messageHandlerComObjOnMessage(event) {
-    var data = event.data;
-    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) {
-        Promise.resolve().then(function () {
-          return action[0].call(action[1], data.data);
-        }).then(function (result) {
-          comObj.postMessage({
-            isReply: true,
-            callbackId: data.callbackId,
-            data: result
-          });
-        }, function (reason) {
-          comObj.postMessage({
-            isReply: true,
-            callbackId: data.callbackId,
-            error: reason
-          });
-        });
-      } else {
-        action[0].call(action[1], data.data);
-      }
-    } else {
-      error('Unknown action from worker: ' + data.action);
-    }
-  };
-}
-
-MessageHandler.prototype = {
-  on: function messageHandlerOn(actionName, handler, scope) {
-    var ah = this.actionHandler;
-    if (ah[actionName]) {
-      error('There is already an actionName called "' + actionName + '"');
-    }
-    ah[actionName] = [handler, scope];
-  },
-  /**
-   * Sends a message to the comObj to invoke the action with the supplied data.
-   * @param {String} actionName Action to call.
-   * @param {JSON} data JSON data to send.
-   * @param {Array} [transfers] Optional list of transfers/ArrayBuffers
-   */
-  send: function messageHandlerSend(actionName, data, transfers) {
-    var message = {
-      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 = {
-      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);
-    }
-  }
-};
-
-function loadJpegStream(id, imageUrl, objs) {
-  var img = new Image();
-  img.onload = (function loadJpegStream_onloadClosure() {
-    objs.resolve(id, img);
-  });
-  img.src = imageUrl;
-}
-
-
-var DEFAULT_ICON_SIZE = 22; // px
-var HIGHLIGHT_OFFSET = 4; // px
-var SUPPORTED_TYPES = ['Link', 'Text', 'Widget'];
-
-var Annotation = (function AnnotationClosure() {
-  // 12.5.5: Algorithm: Appearance streams
-  function getTransformMatrix(rect, bbox, matrix) {
-    var bounds = Util.getAxialAlignedBoundingBox(bbox, matrix);
-    var minX = bounds[0];
-    var minY = bounds[1];
-    var maxX = bounds[2];
-    var maxY = bounds[3];
-
-    if (minX === maxX || minY === maxY) {
-      // From real-life file, bbox was [0, 0, 0, 0]. In this case,
-      // just apply the transform for rect
-      return [1, 0, 0, 1, rect[0], rect[1]];
-    }
-
-    var xRatio = (rect[2] - rect[0]) / (maxX - minX);
-    var yRatio = (rect[3] - rect[1]) / (maxY - minY);
-    return [
-      xRatio,
-      0,
-      0,
-      yRatio,
-      rect[0] - minX * xRatio,
-      rect[1] - minY * yRatio
-    ];
-  }
-
-  function getDefaultAppearance(dict) {
-    var appearanceState = dict.get('AP');
-    if (!isDict(appearanceState)) {
-      return;
-    }
-
-    var appearance;
-    var appearances = appearanceState.get('N');
-    if (isDict(appearances)) {
-      var as = dict.get('AS');
-      if (as && appearances.has(as.name)) {
-        appearance = appearances.get(as.name);
-      }
-    } else {
-      appearance = appearances;
-    }
-    return appearance;
-  }
-
-  function Annotation(params) {
-    if (params.data) {
-      this.data = params.data;
-      return;
-    }
-
-    var dict = params.dict;
-    var data = this.data = {};
-
-    data.subtype = dict.get('Subtype').name;
-    var rect = dict.get('Rect') || [0, 0, 0, 0];
-    data.rect = Util.normalizeRect(rect);
-    data.annotationFlags = dict.get('F');
-
-    var color = dict.get('C');
-    if (isArray(color) && color.length === 3) {
-      // TODO(mack): currently only supporting rgb; need support different
-      // colorspaces
-      data.color = color;
-    } else {
-      data.color = [0, 0, 0];
-    }
-
-    // Some types of annotations have border style dict which has more
-    // info than the border array
-    if (dict.has('BS')) {
-      var borderStyle = dict.get('BS');
-      data.borderWidth = borderStyle.has('W') ? borderStyle.get('W') : 1;
-    } else {
-      var borderArray = dict.get('Border') || [0, 0, 1];
-      data.borderWidth = borderArray[2] || 0;
-
-      // TODO: implement proper support for annotations with line dash patterns.
-      var dashArray = borderArray[3];
-      if (data.borderWidth > 0 && dashArray) {
-        if (!isArray(dashArray)) {
-          // Ignore the border if dashArray is not actually an array,
-          // this is consistent with the behaviour in Adobe Reader. 
-          data.borderWidth = 0;
-        } else {
-          var dashArrayLength = dashArray.length;
-          if (dashArrayLength > 0) {
-            // According to the PDF specification: the elements in a dashArray
-            // shall be numbers that are nonnegative and not all equal to zero.
-            var isInvalid = false;
-            var numPositive = 0;
-            for (var i = 0; i < dashArrayLength; i++) {
-              var validNumber = (+dashArray[i] >= 0);
-              if (!validNumber) {
-                isInvalid = true;
-                break;
-              } else if (dashArray[i] > 0) {
-                numPositive++;
-              }
-            }
-            if (isInvalid || numPositive === 0) {
-              data.borderWidth = 0;
-            }
-          }
-        }
-      }
-    }
-
-    this.appearance = getDefaultAppearance(dict);
-    data.hasAppearance = !!this.appearance;
-    data.id = params.ref.num;
-  }
-
-  Annotation.prototype = {
-
-    getData: function Annotation_getData() {
-      return this.data;
-    },
-
-    hasHtml: function Annotation_hasHtml() {
-      return false;
-    },
-
-    getHtmlElement: function Annotation_getHtmlElement(commonObjs) {
-      throw new NotImplementedException(
-        'getHtmlElement() should be implemented in subclass');
-    },
-
-    // TODO(mack): Remove this, it's not really that helpful.
-    getEmptyContainer: function Annotation_getEmptyContainer(tagName, rect,
-                                                             borderWidth) {
-      assert(!isWorker,
-        'getEmptyContainer() should be called from main thread');
-
-      var bWidth = borderWidth || 0;
-
-      rect = rect || this.data.rect;
-      var element = document.createElement(tagName);
-      element.style.borderWidth = bWidth + 'px';
-      var width = rect[2] - rect[0] - 2 * bWidth;
-      var height = rect[3] - rect[1] - 2 * bWidth;
-      element.style.width = width + 'px';
-      element.style.height = height + 'px';
-      return element;
-    },
-
-    isInvisible: function Annotation_isInvisible() {
-      var data = this.data;
-      if (data && SUPPORTED_TYPES.indexOf(data.subtype) !== -1) {
-        return false;
-      } else {
-        return !!(data &&
-                  data.annotationFlags &&            // Default: not invisible
-                  data.annotationFlags & 0x1);       // Invisible
-      }
-    },
-
-    isViewable: function Annotation_isViewable() {
-      var data = this.data;
-      return !!(!this.isInvisible() &&
-                data &&
-                (!data.annotationFlags ||
-                 !(data.annotationFlags & 0x22)) &&  // Hidden or NoView
-                data.rect);                          // rectangle is nessessary
-    },
-
-    isPrintable: function Annotation_isPrintable() {
-      var data = this.data;
-      return !!(!this.isInvisible() &&
-                data &&
-                data.annotationFlags &&              // Default: not printable
-                data.annotationFlags & 0x4 &&        // Print
-                data.rect);                          // rectangle is nessessary
-    },
-
-    loadResources: function Annotation_loadResources(keys) {
-      return new Promise(function (resolve, reject) {
-        this.appearance.dict.getAsync('Resources').then(function (resources) {
-          if (!resources) {
-            resolve();
-            return;
-          }
-          var objectLoader = new ObjectLoader(resources.map,
-                                              keys,
-                                              resources.xref);
-          objectLoader.load().then(function() {
-            resolve(resources);
-          }, reject);
-        }, reject);
-      }.bind(this));
-    },
-
-    getOperatorList: function Annotation_getOperatorList(evaluator) {
-
-      if (!this.appearance) {
-        return Promise.resolve(new OperatorList());
-      }
-
-      var data = this.data;
-
-      var appearanceDict = this.appearance.dict;
-      var resourcesPromise = this.loadResources([
-        'ExtGState',
-        'ColorSpace',
-        'Pattern',
-        'Shading',
-        'XObject',
-        'Font'
-        // ProcSet
-        // Properties
-      ]);
-      var bbox = appearanceDict.get('BBox') || [0, 0, 1, 1];
-      var matrix = appearanceDict.get('Matrix') || [1, 0, 0, 1, 0 ,0];
-      var transform = getTransformMatrix(data.rect, bbox, matrix);
-      var self = this;
-
-      return resourcesPromise.then(function(resources) {
-          var opList = new OperatorList();
-          opList.addOp(OPS.beginAnnotation, [data.rect, transform, matrix]);
-          return evaluator.getOperatorList(self.appearance, resources, opList).
-            then(function () {
-              opList.addOp(OPS.endAnnotation, []);
-              self.appearance.reset();
-              return opList;
-            });
-        });
-    }
-  };
-
-  Annotation.getConstructor =
-      function Annotation_getConstructor(subtype, fieldType) {
-
-    if (!subtype) {
-      return;
-    }
-
-    // TODO(mack): Implement FreeText annotations
-    if (subtype === 'Link') {
-      return LinkAnnotation;
-    } else if (subtype === 'Text') {
-      return TextAnnotation;
-    } else if (subtype === 'Widget') {
-      if (!fieldType) {
-        return;
-      }
-
-      if (fieldType === 'Tx') {
-        return TextWidgetAnnotation;
-      } else {
-        return WidgetAnnotation;
-      }
-    } else {
-      return Annotation;
-    }
-  };
-
-  // TODO(mack): Support loading annotation from data
-  Annotation.fromData = function Annotation_fromData(data) {
-    var subtype = data.subtype;
-    var fieldType = data.fieldType;
-    var Constructor = Annotation.getConstructor(subtype, fieldType);
-    if (Constructor) {
-      return new Constructor({ data: data });
-    }
-  };
-
-  Annotation.fromRef = function Annotation_fromRef(xref, ref) {
-
-    var dict = xref.fetchIfRef(ref);
-    if (!isDict(dict)) {
-      return;
-    }
-
-    var subtype = dict.get('Subtype');
-    subtype = isName(subtype) ? subtype.name : '';
-    if (!subtype) {
-      return;
-    }
-
-    var fieldType = Util.getInheritableProperty(dict, 'FT');
-    fieldType = isName(fieldType) ? fieldType.name : '';
-
-    var Constructor = Annotation.getConstructor(subtype, fieldType);
-    if (!Constructor) {
-      return;
-    }
-
-    var params = {
-      dict: dict,
-      ref: ref,
-    };
-
-    var annotation = new Constructor(params);
-
-    if (annotation.isViewable() || annotation.isPrintable()) {
-      return annotation;
-    } else {
-      warn('unimplemented annotation type: ' + subtype);
-    }
-  };
-
-  Annotation.appendToOperatorList = function Annotation_appendToOperatorList(
-      annotations, opList, pdfManager, partialEvaluator, intent) {
-
-    function reject(e) {
-      annotationsReadyCapability.reject(e);
-    }
-
-    var annotationsReadyCapability = createPromiseCapability();
-
-    var annotationPromises = [];
-    for (var i = 0, n = annotations.length; i < n; ++i) {
-      if (intent === 'display' && annotations[i].isViewable() ||
-          intent === 'print' && annotations[i].isPrintable()) {
-        annotationPromises.push(
-          annotations[i].getOperatorList(partialEvaluator));
-      }
-    }
-    Promise.all(annotationPromises).then(function(datas) {
-      opList.addOp(OPS.beginAnnotations, []);
-      for (var i = 0, n = datas.length; i < n; ++i) {
-        var annotOpList = datas[i];
-        opList.addOpList(annotOpList);
-      }
-      opList.addOp(OPS.endAnnotations, []);
-      annotationsReadyCapability.resolve();
-    }, reject);
-
-    return annotationsReadyCapability.promise;
-  };
-
-  return Annotation;
-})();
-PDFJS.Annotation = Annotation;
-
-
-var WidgetAnnotation = (function WidgetAnnotationClosure() {
-
-  function WidgetAnnotation(params) {
-    Annotation.call(this, params);
-
-    if (params.data) {
-      return;
-    }
-
-    var dict = params.dict;
-    var data = this.data;
-
-    data.fieldValue = stringToPDFString(
-      Util.getInheritableProperty(dict, 'V') || '');
-    data.alternativeText = stringToPDFString(dict.get('TU') || '');
-    data.defaultAppearance = Util.getInheritableProperty(dict, 'DA') || '';
-    var fieldType = Util.getInheritableProperty(dict, 'FT');
-    data.fieldType = isName(fieldType) ? fieldType.name : '';
-    data.fieldFlags = Util.getInheritableProperty(dict, 'Ff') || 0;
-    this.fieldResources = Util.getInheritableProperty(dict, 'DR') || Dict.empty;
-
-    // Building the full field name by collecting the field and
-    // its ancestors 'T' data and joining them using '.'.
-    var fieldName = [];
-    var namedItem = dict;
-    var ref = params.ref;
-    while (namedItem) {
-      var parent = namedItem.get('Parent');
-      var parentRef = namedItem.getRaw('Parent');
-      var name = namedItem.get('T');
-      if (name) {
-        fieldName.unshift(stringToPDFString(name));
-      } else {
-        // The field name is absent, that means more than one field
-        // with the same name may exist. Replacing the empty name
-        // with the '`' plus index in the parent's 'Kids' array.
-        // This is not in the PDF spec but necessary to id the
-        // the input controls.
-        var kids = parent.get('Kids');
-        var j, jj;
-        for (j = 0, jj = kids.length; j < jj; j++) {
-          var kidRef = kids[j];
-          if (kidRef.num == ref.num && kidRef.gen == ref.gen) {
-            break;
-          }
-        }
-        fieldName.unshift('`' + j);
-      }
-      namedItem = parent;
-      ref = parentRef;
-    }
-    data.fullName = fieldName.join('.');
-  }
-
-  var parent = Annotation.prototype;
-  Util.inherit(WidgetAnnotation, Annotation, {
-    isViewable: function WidgetAnnotation_isViewable() {
-      if (this.data.fieldType === 'Sig') {
-        warn('unimplemented annotation type: Widget signature');
-        return false;
-      }
-
-      return parent.isViewable.call(this);
-    }
-  });
-
-  return WidgetAnnotation;
-})();
-
-var TextWidgetAnnotation = (function TextWidgetAnnotationClosure() {
-  function TextWidgetAnnotation(params) {
-    WidgetAnnotation.call(this, params);
-
-    if (params.data) {
-      return;
-    }
-
-    this.data.textAlignment = Util.getInheritableProperty(params.dict, 'Q');
-  }
-
-  // TODO(mack): This dupes some of the logic in CanvasGraphics.setFont()
-  function setTextStyles(element, item, fontObj) {
-
-    var style = element.style;
-    style.fontSize = item.fontSize + 'px';
-    style.direction = item.fontDirection < 0 ? 'rtl': 'ltr';
-
-    if (!fontObj) {
-      return;
-    }
-
-    style.fontWeight = fontObj.black ?
-                            (fontObj.bold ? 'bolder' : 'bold') :
-                            (fontObj.bold ? 'bold' : 'normal');
-    style.fontStyle = fontObj.italic ? 'italic' : 'normal';
-
-    var fontName = fontObj.loadedName;
-    var fontFamily = fontName ? '"' + fontName + '", ' : '';
-    // Use a reasonable default font if the font doesn't specify a fallback
-    var fallbackName = fontObj.fallbackName || 'Helvetica, sans-serif';
-    style.fontFamily = fontFamily + fallbackName;
-  }
-
-
-  Util.inherit(TextWidgetAnnotation, WidgetAnnotation, {
-    hasHtml: function TextWidgetAnnotation_hasHtml() {
-      return !this.data.hasAppearance && !!this.data.fieldValue;
-    },
-
-    getHtmlElement: function TextWidgetAnnotation_getHtmlElement(commonObjs) {
-      assert(!isWorker, 'getHtmlElement() shall be called from main thread');
-
-      var item = this.data;
-
-      var element = this.getEmptyContainer('div');
-      element.style.display = 'table';
-
-      var content = document.createElement('div');
-      content.textContent = item.fieldValue;
-      var textAlignment = item.textAlignment;
-      content.style.textAlign = ['left', 'center', 'right'][textAlignment];
-      content.style.verticalAlign = 'middle';
-      content.style.display = 'table-cell';
-
-      var fontObj = item.fontRefName ?
-                    commonObjs.getData(item.fontRefName) : null;
-      setTextStyles(content, item, fontObj);
-
-      element.appendChild(content);
-
-      return element;
-    },
-
-    getOperatorList: function TextWidgetAnnotation_getOperatorList(evaluator) {
-      if (this.appearance) {
-        return Annotation.prototype.getOperatorList.call(this, evaluator);
-      }
-
-      var opList = new OperatorList();
-      var data = this.data;
-
-      // Even if there is an appearance stream, ignore it. This is the
-      // behaviour used by Adobe Reader.
-      if (!data.defaultAppearance) {
-        return Promise.resolve(opList);
-      }
-
-      var stream = new Stream(stringToBytes(data.defaultAppearance));
-      return evaluator.getOperatorList(stream, this.fieldResources, opList).
-        then(function () {
-          return opList;
-        });
-    }
-  });
-
-  return TextWidgetAnnotation;
-})();
-
-var InteractiveAnnotation = (function InteractiveAnnotationClosure() {
-  function InteractiveAnnotation(params) {
-    Annotation.call(this, params);
-  }
-
-  Util.inherit(InteractiveAnnotation, Annotation, {
-    hasHtml: function InteractiveAnnotation_hasHtml() {
-      return true;
-    },
-
-    highlight: function InteractiveAnnotation_highlight() {
-      if (this.highlightElement &&
-         this.highlightElement.hasAttribute('hidden')) {
-        this.highlightElement.removeAttribute('hidden');
-      }
-    },
-
-    unhighlight: function InteractiveAnnotation_unhighlight() {
-      if (this.highlightElement &&
-         !this.highlightElement.hasAttribute('hidden')) {
-        this.highlightElement.setAttribute('hidden', true);
-      }
-    },
-
-    initContainer: function InteractiveAnnotation_initContainer() {
-
-      var item = this.data;
-      var rect = item.rect;
-
-      var container = this.getEmptyContainer('section', rect, item.borderWidth);
-      container.style.backgroundColor = item.color;
-
-      var color = item.color;
-      var rgb = [];
-      for (var i = 0; i < 3; ++i) {
-        rgb[i] = Math.round(color[i] * 255);
-      }
-      item.colorCssRgb = Util.makeCssRgb(rgb);
-
-      var highlight = document.createElement('div');
-      highlight.className = 'annotationHighlight';
-      highlight.style.left = highlight.style.top = -HIGHLIGHT_OFFSET + 'px';
-      highlight.style.right = highlight.style.bottom = -HIGHLIGHT_OFFSET + 'px';
-      highlight.setAttribute('hidden', true);
-
-      this.highlightElement = highlight;
-      container.appendChild(this.highlightElement);
-
-      return container;
-    }
-  });
-
-  return InteractiveAnnotation;
-})();
-
-var TextAnnotation = (function TextAnnotationClosure() {
-  function TextAnnotation(params) {
-    InteractiveAnnotation.call(this, params);
-
-    if (params.data) {
-      return;
-    }
-
-    var dict = params.dict;
-    var data = this.data;
-
-    var content = dict.get('Contents');
-    var title = dict.get('T');
-    data.content = stringToPDFString(content || '');
-    data.title = stringToPDFString(title || '');
-
-    if (data.hasAppearance) {
-      data.name = 'NoIcon';
-    } else {
-      data.rect[1] = data.rect[3] - DEFAULT_ICON_SIZE;
-      data.rect[2] = data.rect[0] + DEFAULT_ICON_SIZE;
-      data.name = dict.has('Name') ? dict.get('Name').name : 'Note';
-    }
-
-    if (dict.has('C')) {
-      data.hasBgColor = true;
-    }
-  }
-
-  var ANNOT_MIN_SIZE = 10;
-
-  Util.inherit(TextAnnotation, InteractiveAnnotation, {
-
-    getHtmlElement: function TextAnnotation_getHtmlElement(commonObjs) {
-      assert(!isWorker, 'getHtmlElement() shall be called from main thread');
-
-      var item = this.data;
-      var rect = item.rect;
-
-      // sanity check because of OOo-generated PDFs
-      if ((rect[3] - rect[1]) < ANNOT_MIN_SIZE) {
-        rect[3] = rect[1] + ANNOT_MIN_SIZE;
-      }
-      if ((rect[2] - rect[0]) < ANNOT_MIN_SIZE) {
-        rect[2] = rect[0] + (rect[3] - rect[1]); // make it square
-      }
-
-      var container = this.initContainer();
-      container.className = 'annotText';
-
-      var image  = document.createElement('img');
-      image.style.height = container.style.height;
-      image.style.width = container.style.width;
-      var iconName = item.name;
-      image.src = PDFJS.imageResourcesPath + 'annotation-' +
-        iconName.toLowerCase() + '.svg';
-      image.alt = '[{{type}} Annotation]';
-      image.dataset.l10nId = 'text_annotation_type';
-      image.dataset.l10nArgs = JSON.stringify({type: iconName});
-
-      var contentWrapper = document.createElement('div');
-      contentWrapper.className = 'annotTextContentWrapper';
-      contentWrapper.style.left = Math.floor(rect[2] - rect[0] + 5) + 'px';
-      contentWrapper.style.top = '-10px';
-
-      var content = document.createElement('div');
-      content.className = 'annotTextContent';
-      content.setAttribute('hidden', true);
-
-      var i, ii;
-      if (item.hasBgColor) {
-        var color = item.color;
-        var rgb = [];
-        for (i = 0; i < 3; ++i) {
-          // Enlighten the color (70%)
-          var c = Math.round(color[i] * 255);
-          rgb[i] = Math.round((255 - c) * 0.7) + c;
-        }
-        content.style.backgroundColor = Util.makeCssRgb(rgb);
-      }
-
-      var title = document.createElement('h1');
-      var text = document.createElement('p');
-      title.textContent = item.title;
-
-      if (!item.content && !item.title) {
-        content.setAttribute('hidden', true);
-      } else {
-        var e = document.createElement('span');
-        var lines = item.content.split(/(?:\r\n?|\n)/);
-        for (i = 0, ii = lines.length; i < ii; ++i) {
-          var line = lines[i];
-          e.appendChild(document.createTextNode(line));
-          if (i < (ii - 1)) {
-            e.appendChild(document.createElement('br'));
-          }
-        }
-        text.appendChild(e);
-
-        var pinned = false;
-
-        var showAnnotation = function showAnnotation(pin) {
-          if (pin) {
-            pinned = true;
-          }
-          if (content.hasAttribute('hidden')) {
-            container.style.zIndex += 1;
-            content.removeAttribute('hidden');
-          }
-        };
-
-        var hideAnnotation = function hideAnnotation(unpin) {
-          if (unpin) {
-            pinned = false;
-          }
-          if (!content.hasAttribute('hidden') && !pinned) {
-            container.style.zIndex -= 1;
-            content.setAttribute('hidden', true);
-          }
-        };
-
-        var toggleAnnotation = function toggleAnnotation() {
-          if (pinned) {
-            hideAnnotation(true);
-          } else {
-            showAnnotation(true);
-          }
-        };
-
-        image.addEventListener('click', function image_clickHandler() {
-          toggleAnnotation();
-        }, false);
-        image.addEventListener('mouseover', function image_mouseOverHandler() {
-          showAnnotation();
-        }, false);
-        image.addEventListener('mouseout', function image_mouseOutHandler() {
-          hideAnnotation();
-        }, false);
-
-        content.addEventListener('click', function content_clickHandler() {
-          hideAnnotation(true);
-        }, false);
-      }
-
-      content.appendChild(title);
-      content.appendChild(text);
-      contentWrapper.appendChild(content);
-      container.appendChild(image);
-      container.appendChild(contentWrapper);
-
-      return container;
-    }
-  });
-
-  return TextAnnotation;
-})();
-
-var LinkAnnotation = (function LinkAnnotationClosure() {
-  function LinkAnnotation(params) {
-    InteractiveAnnotation.call(this, params);
-
-    if (params.data) {
-      return;
-    }
-
-    var dict = params.dict;
-    var data = this.data;
-
-    var action = dict.get('A');
-    if (action) {
-      var linkType = action.get('S').name;
-      if (linkType === 'URI') {
-        var url = action.get('URI');
-        if (isName(url)) {
-          // Some bad PDFs do not put parentheses around relative URLs.
-          url = '/' + url.name;
-        } else if (url) {
-          url = addDefaultProtocolToUrl(url);
-        }
-        // TODO: pdf spec mentions urls can be relative to a Base
-        // entry in the dictionary.
-        if (!isValidUrl(url, false)) {
-          url = '';
-        }
-        data.url = url;
-      } else if (linkType === 'GoTo') {
-        data.dest = action.get('D');
-      } else if (linkType === 'GoToR') {
-        var urlDict = action.get('F');
-        if (isDict(urlDict)) {
-          // We assume that the 'url' is a Filspec dictionary
-          // and fetch the url without checking any further
-          url = urlDict.get('F') || '';
-        }
-
-        // TODO: pdf reference says that GoToR
-        // can also have 'NewWindow' attribute
-        if (!isValidUrl(url, false)) {
-          url = '';
-        }
-        data.url = url;
-        data.dest = action.get('D');
-      } else if (linkType === 'Named') {
-        data.action = action.get('N').name;
-      } else {
-        warn('unrecognized link type: ' + linkType);
-      }
-    } else if (dict.has('Dest')) {
-      // simple destination link
-      var dest = dict.get('Dest');
-      data.dest = isName(dest) ? dest.name : dest;
-    }
-  }
-
-  // Lets URLs beginning with 'www.' default to using the 'http://' protocol.
-  function addDefaultProtocolToUrl(url) {
-    if (url && url.indexOf('www.') === 0) {
-      return ('http://' + url);
-    }
-    return url;
-  }
-
-  Util.inherit(LinkAnnotation, InteractiveAnnotation, {
-    hasOperatorList: function LinkAnnotation_hasOperatorList() {
-      return false;
-    },
-
-    getHtmlElement: function LinkAnnotation_getHtmlElement(commonObjs) {
-
-      var container = this.initContainer();
-      container.className = 'annotLink';
-
-      var item = this.data;
-
-      container.style.borderColor = item.colorCssRgb;
-      container.style.borderStyle = 'solid';
-
-      var link = document.createElement('a');
-      link.href = link.title = this.data.url || '';
-
-      container.appendChild(link);
-
-      return container;
-    }
-  });
-
-  return LinkAnnotation;
-})();
-
-
-/**
- * The maximum allowed image size in total pixels e.g. width * height. Images
- * above this value will not be drawn. Use -1 for no limit.
- * @var {number}
- */
-PDFJS.maxImageSize = (PDFJS.maxImageSize === undefined ?
-                      -1 : PDFJS.maxImageSize);
-
-/**
- * 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.
- * @var {string}
- */
-PDFJS.workerSrc = (PDFJS.workerSrc === undefined ? null : PDFJS.workerSrc);
-
-/**
- * Disable range request loading of PDF files. When enabled and if the server
- * supports partial content requests then the PDF will be fetched in chunks.
- * Enabled (false) by default.
- * @var {boolean}
- */
-PDFJS.disableRange = (PDFJS.disableRange === undefined ?
-                      false : PDFJS.disableRange);
-
-/**
- * Disable pre-fetching of PDF file data. When range requests are enabled PDF.js
- * will automatically keep fetching more data even if it isn't needed to display
- * the current page. This default behavior can be disabled.
- * @var {boolean}
- */
-PDFJS.disableAutoFetch = (PDFJS.disableAutoFetch === undefined ?
-                          false : PDFJS.disableAutoFetch);
-
-/**
- * Enables special hooks for debugging PDF.js.
- * @var {boolean}
- */
-PDFJS.pdfBug = (PDFJS.pdfBug === undefined ? false : PDFJS.pdfBug);
-
-/**
- * Enables transfer usage in postMessage for ArrayBuffers.
- * @var {boolean}
- */
-PDFJS.postMessageTransfers = (PDFJS.postMessageTransfers === undefined ?
-                              true : PDFJS.postMessageTransfers);
-
-/**
- * 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);
-
-/**
- * Controls the logging level.
- * The constants from PDFJS.VERBOSITY_LEVELS should be used:
- * - errors
- * - warnings [default]
- * - infos
- * @var {number}
- */
-PDFJS.verbosity = (PDFJS.verbosity === undefined ?
-                   PDFJS.VERBOSITY_LEVELS.warnings : PDFJS.verbosity);
-
-/**
- * Document initialization / loading parameters object.
- *
- * @typedef {Object} DocumentInitParameters
- * @property {string}     url   - The URL of the PDF.
- * @property {TypedArray} data  - A typed array with PDF data.
- * @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.
- */
-
-/**
- * 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} source Can be a url to
- * where a PDF is located, a typed array (Uint8Array) already populated with
- * data or parameter object.
- *
- * @param {Object} pdfDataRangeTransport is optional. It is used if you want
- * to manually serve range requests for data in the PDF. See viewer.js for
- * an example of pdfDataRangeTransport's interface.
- *
- * @param {function} passwordCallback is optional. It is used to request a
- * password if wrong or no password was provided. The callback receives two
- * parameters: function that needs to be called with new password and reason
- * (see {PasswordResponses}).
- *
- * @return {Promise} A promise that is resolved with {@link PDFDocumentProxy}
- *   object.
- */
-PDFJS.getDocument = function getDocument(source,
-                                         pdfDataRangeTransport,
-                                         passwordCallback,
-                                         progressCallback) {
-  var workerInitializedCapability, workerReadyCapability, transport;
-
-  if (typeof source === 'string') {
-    source = { url: source };
-  } else if (isArrayBuffer(source)) {
-    source = { data: source };
-  } else if (typeof source !== 'object') {
-    error('Invalid parameter in getDocument, need either Uint8Array, ' +
-          'string or a parameter object');
-  }
-
-  if (!source.url && !source.data) {
-    error('Invalid parameter array, need either .data or .url');
-  }
-
-  // copy/use all keys as is except 'url' -- full path is required
-  var params = {};
-  for (var key in source) {
-    if (key === 'url' && typeof window !== 'undefined') {
-      params[key] = combineUrl(window.location.href, source[key]);
-      continue;
-    }
-    params[key] = source[key];
-  }
-
-  workerInitializedCapability = createPromiseCapability();
-  workerReadyCapability = createPromiseCapability();
-  transport = new WorkerTransport(workerInitializedCapability,
-                                  workerReadyCapability, pdfDataRangeTransport,
-                                  progressCallback);
-  workerInitializedCapability.promise.then(function transportInitialized() {
-    transport.passwordCallback = passwordCallback;
-    transport.fetchDocument(params);
-  });
-  return workerReadyCapability.promise;
-};
-
-/**
- * Proxy to a PDFDocument in the worker thread. Also, contains commonly used
- * properties that can be read synchronously.
- * @class
- */
-var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
-  function PDFDocumentProxy(pdfInfo, transport) {
-    this.pdfInfo = pdfInfo;
-    this.transport = transport;
-  }
-  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.
-     */
-    getDestinations: function PDFDocumentProxy_getDestinations() {
-      return this.transport.getDestinations();
-    },
-    /**
-     * @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 array,
-     *   dest: dest obj,
-     *   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;
-    },
-    /**
-     * 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() {
-      this.transport.destroy();
-    }
-  };
-  return PDFDocumentProxy;
-})();
-
-/**
- * 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 render parameters.
- *
- * @typedef {Object} RenderParameters
- * @property {Object} canvasContext - A 2D context of a DOM Canvas object.
- * @property {PDFJS.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 {Object} imageLayer - (optional) An object that has beginLayout,
- *                    endLayout and appendImage functions.
- * @property {function} continueCallback - (optional) A function that will be
- *                      called each time the rendering is paused.  To continue
- *                      rendering call the function that is the first argument
- *                      to the callback.
- */
-
-/**
- * Proxy to a PDFPage in the worker thread.
- * @class
- */
-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 = !!globalScope.PDFJS.enableStats;
-    this.commonObjs = transport.commonObjs;
-    this.objs = new PDFObjects();
-    this.cleanupAfterRender = false;
-    this.pendingDestroy = false;
-    this.intentStates = {};
-  }
-  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 {PDFJS.PageViewport} Contains 'width' and 'height' properties
-     * along with transforms required for rendering.
-     */
-    getViewport: function PDFPageProxy_getViewport(scale, rotate) {
-      if (arguments.length < 2) {
-        rotate = this.rotate;
-      }
-      return new PDFJS.PageViewport(this.view, scale, rotate, 0, 0);
-    },
-    /**
-     * @return {Promise} A promise that is resolved with an {Array} of the
-     * annotation objects.
-     */
-    getAnnotations: function PDFPageProxy_getAnnotations() {
-      if (this.annotationsPromise) {
-        return this.annotationsPromise;
-      }
-
-      var promise = this.transport.getAnnotations(this.pageIndex);
-      this.annotationsPromise = promise;
-      return promise;
-    },
-    /**
-     * 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.pendingDestroy = false;
-
-      var renderingIntent = ('intent' in params ?
-        (params.intent == 'print' ? 'print' : 'display') : 'display');
-
-      if (!this.intentStates[renderingIntent]) {
-        this.intentStates[renderingIntent] = {};
-      }
-      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);
-      if (!intentState.renderTasks) {
-        intentState.renderTasks = [];
-      }
-      intentState.renderTasks.push(internalRenderTask);
-      var renderTask = new RenderTask(internalRenderTask);
-
-      var self = this;
-      intentState.displayReadyCapability.promise.then(
-        function pageDisplayReadyPromise(transparency) {
-          if (self.pendingDestroy) {
-            complete();
-            return;
-          }
-          stats.time('Rendering');
-          internalRenderTask.initalizeGraphics(transparency);
-          internalRenderTask.operatorListChanged();
-        },
-        function pageDisplayReadPromiseError(reason) {
-          complete(reason);
-        }
-      );
-
-      function complete(error) {
-        var i = intentState.renderTasks.indexOf(internalRenderTask);
-        if (i >= 0) {
-          intentState.renderTasks.splice(i, 1);
-        }
-
-        if (self.cleanupAfterRender) {
-          self.pendingDestroy = true;
-        }
-        self._tryDestroy();
-
-        if (error) {
-          internalRenderTask.capability.reject(error);
-        } else {
-          internalRenderTask.capability.resolve();
-        }
-        stats.timeEnd('Rendering');
-        stats.timeEnd('Overall');
-      }
-
-      return renderTask;
-    },
-    /**
-     * @return {Promise} That is resolved a {@link TextContent}
-     * object that represent the page text content.
-     */
-    getTextContent: function PDFPageProxy_getTextContent() {
-      return this.transport.messageHandler.sendWithPromise('GetTextContent', {
-        pageIndex: this.pageNumber - 1
-      });
-    },
-    /**
-     * Destroys resources allocated by the page.
-     */
-    destroy: function PDFPageProxy_destroy() {
-      this.pendingDestroy = true;
-      this._tryDestroy();
-    },
-    /**
-     * For internal use only. Attempts to clean up if rendering is in a state
-     * where that's possible.
-     * @ignore
-     */
-    _tryDestroy: function PDFPageProxy__destroy() {
-      if (!this.pendingDestroy ||
-          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.pendingDestroy = false;
-    },
-    /**
-     * For internal use only.
-     * @ignore
-     */
-    _startRenderPage: function PDFPageProxy_startRenderPage(transparency,
-                                                            intent) {
-      var intentState = this.intentStates[intent];
-      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._tryDestroy();
-      }
-    }
-  };
-  return PDFPageProxy;
-})();
-
-/**
- * For internal use only.
- * @ignore
- */
-var WorkerTransport = (function WorkerTransportClosure() {
-  function WorkerTransport(workerInitializedCapability, workerReadyCapability,
-                           pdfDataRangeTransport, progressCallback) {
-    this.pdfDataRangeTransport = pdfDataRangeTransport;
-
-    this.workerReadyCapability = workerReadyCapability;
-    this.progressCallback = progressCallback;
-    this.commonObjs = new PDFObjects();
-
-    this.pageCache = [];
-    this.pagePromises = [];
-    this.downloadInfoCapability = createPromiseCapability();
-    this.passwordCallback = null;
-
-    // If worker support isn't disabled explicit and the browser has worker
-    // support, create a new web worker and test if it/the browser fullfills
-    // all requirements to run parts of pdf.js in a web worker.
-    // Right now, the requirement is, that an Uint8Array is still an Uint8Array
-    // as it arrives on the worker. Chrome added this with version 15.
-    if (!globalScope.PDFJS.disableWorker && typeof Worker !== 'undefined') {
-      var workerSrc = PDFJS.workerSrc;
-      if (!workerSrc) {
-        error('No PDFJS.workerSrc specified');
-      }
-
-      try {
-        // Some versions of FF can't create a worker on localhost, see:
-        // https://bugzilla.mozilla.org/show_bug.cgi?id=683280
-        var worker = new Worker(workerSrc);
-        var messageHandler = new MessageHandler('main', worker);
-        this.messageHandler = messageHandler;
-
-        messageHandler.on('test', function transportTest(data) {
-          var supportTypedArray = data && data.supportTypedArray;
-          if (supportTypedArray) {
-            this.worker = worker;
-            if (!data.supportTransfers) {
-              PDFJS.postMessageTransfers = false;
-            }
-            this.setupMessageHandler(messageHandler);
-            workerInitializedCapability.resolve();
-          } else {
-            globalScope.PDFJS.disableWorker = true;
-            this.loadFakeWorkerFiles().then(function() {
-              this.setupFakeWorker();
-              workerInitializedCapability.resolve();
-            }.bind(this));
-          }
-        }.bind(this));
-
-        var testObj = new Uint8Array([PDFJS.postMessageTransfers ? 255 : 0]);
-        // Some versions of Opera throw a DATA_CLONE_ERR on serializing the
-        // typed array. Also, checking if we can use transfers.
-        try {
-          messageHandler.send('test', testObj, [testObj.buffer]);
-        } catch (ex) {
-          info('Cannot use postMessage transfers');
-          testObj[0] = 0;
-          messageHandler.send('test', testObj);
-        }
-        return;
-      } catch (e) {
-        info('The worker has been disabled.');
-      }
-    }
-    // Either workers are disabled, not supported or have thrown an exception.
-    // Thus, we fallback to a faked worker.
-    globalScope.PDFJS.disableWorker = true;
-    this.loadFakeWorkerFiles().then(function() {
-      this.setupFakeWorker();
-      workerInitializedCapability.resolve();
-    }.bind(this));
-  }
-  WorkerTransport.prototype = {
-    destroy: function WorkerTransport_destroy() {
-      this.pageCache = [];
-      this.pagePromises = [];
-      var self = this;
-      this.messageHandler.sendWithPromise('Terminate', null).then(function () {
-        FontLoader.clear();
-        if (self.worker) {
-          self.worker.terminate();
-        }
-      });
-    },
-
-    loadFakeWorkerFiles: function WorkerTransport_loadFakeWorkerFiles() {
-      if (!PDFJS.fakeWorkerFilesLoadedCapability) {
-        PDFJS.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.
-        Util.loadScript(PDFJS.workerSrc, function() {
-          PDFJS.fakeWorkerFilesLoadedCapability.resolve();
-        });
-      }
-      return PDFJS.fakeWorkerFilesLoadedCapability.promise;
-    },
-
-    setupFakeWorker: function WorkerTransport_setupFakeWorker() {
-      warn('Setting up fake worker.');
-      // If we don't use a worker, just post/sendMessage to the main thread.
-      var fakeWorker = {
-        postMessage: function WorkerTransport_postMessage(obj) {
-          fakeWorker.onmessage({data: obj});
-        },
-        terminate: function WorkerTransport_terminate() {}
-      };
-
-      var messageHandler = new MessageHandler('main', fakeWorker);
-      this.setupMessageHandler(messageHandler);
-
-      // If the main thread is our worker, setup the handling for the messages
-      // the main thread sends to it self.
-      PDFJS.WorkerMessageHandler.setup(messageHandler);
-    },
-
-    setupMessageHandler:
-      function WorkerTransport_setupMessageHandler(messageHandler) {
-      this.messageHandler = messageHandler;
-
-      function updatePassword(password) {
-        messageHandler.send('UpdatePassword', password);
-      }
-
-      var pdfDataRangeTransport = this.pdfDataRangeTransport;
-      if (pdfDataRangeTransport) {
-        pdfDataRangeTransport.addRangeListener(function(begin, chunk) {
-          messageHandler.send('OnDataRange', {
-            begin: begin,
-            chunk: chunk
-          });
-        });
-
-        pdfDataRangeTransport.addProgressListener(function(loaded) {
-          messageHandler.send('OnDataProgress', {
-            loaded: loaded
-          });
-        });
-
-        messageHandler.on('RequestDataRange',
-          function transportDataRange(data) {
-            pdfDataRangeTransport.requestDataRange(data.begin, data.end);
-          }, this);
-      }
-
-      messageHandler.on('GetDoc', function transportDoc(data) {
-        var pdfInfo = data.pdfInfo;
-        this.numPages = data.pdfInfo.numPages;
-        var pdfDocument = new PDFDocumentProxy(pdfInfo, this);
-        this.pdfDocument = pdfDocument;
-        this.workerReadyCapability.resolve(pdfDocument);
-      }, this);
-
-      messageHandler.on('NeedPassword', function transportPassword(data) {
-        if (this.passwordCallback) {
-          return this.passwordCallback(updatePassword,
-                                       PasswordResponses.NEED_PASSWORD);
-        }
-        this.workerReadyCapability.reject(data.exception.message,
-                                          data.exception);
-      }, this);
-
-      messageHandler.on('IncorrectPassword', function transportBadPass(data) {
-        if (this.passwordCallback) {
-          return this.passwordCallback(updatePassword,
-                                       PasswordResponses.INCORRECT_PASSWORD);
-        }
-        this.workerReadyCapability.reject(data.exception.message,
-                                          data.exception);
-      }, this);
-
-      messageHandler.on('InvalidPDF', function transportInvalidPDF(data) {
-        this.workerReadyCapability.reject(data.exception.name, data.exception);
-      }, this);
-
-      messageHandler.on('MissingPDF', function transportMissingPDF(data) {
-        this.workerReadyCapability.reject(data.exception.message,
-                                          data.exception);
-      }, this);
-
-      messageHandler.on('UnknownError', function transportUnknownError(data) {
-        this.workerReadyCapability.reject(data.exception.message,
-                                          data.exception);
-      }, this);
-
-      messageHandler.on('DataLoaded', function transportPage(data) {
-        this.downloadInfoCapability.resolve(data);
-      }, this);
-
-      messageHandler.on('StartRenderPage', function transportRender(data) {
-        var page = this.pageCache[data.pageIndex];
-
-        page.stats.timeEnd('Page Request');
-        page._startRenderPage(data.transparency, data.intent);
-      }, this);
-
-      messageHandler.on('RenderPageChunk', function transportRender(data) {
-        var page = this.pageCache[data.pageIndex];
-
-        page._renderPageChunk(data.operatorList, data.intent);
-      }, this);
-
-      messageHandler.on('commonobj', function transportObj(data) {
-        var id = data[0];
-        var type = data[1];
-        if (this.commonObjs.hasData(id)) {
-          return;
-        }
-
-        switch (type) {
-          case 'Font':
-            var exportedData = data[2];
-
-            var font;
-            if ('error' in exportedData) {
-              var error = exportedData.error;
-              warn('Error during font loading: ' + error);
-              this.commonObjs.resolve(id, error);
-              break;
-            } else {
-              font = new FontFace(exportedData);
-            }
-
-            FontLoader.bind(
-              [font],
-              function fontReady(fontObjs) {
-                this.commonObjs.resolve(id, font);
-              }.bind(this)
-            );
-            break;
-          case 'FontPath':
-            this.commonObjs.resolve(id, data[2]);
-            break;
-          default:
-            error('Got unknown common object type ' + type);
-        }
-      }, this);
-
-      messageHandler.on('obj', function transportObj(data) {
-        var id = data[0];
-        var pageIndex = data[1];
-        var type = data[2];
-        var pageProxy = this.pageCache[pageIndex];
-        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.progressCallback) {
-          this.progressCallback({
-            loaded: data.loaded,
-            total: data.total
-          });
-        }
-      }, this);
-
-      messageHandler.on('DocError', function transportDocError(data) {
-        this.workerReadyCapability.reject(data);
-      }, this);
-
-      messageHandler.on('PageError', function transportError(data) {
-        var page = this.pageCache[data.pageNum - 1];
-        var intentState = page.intentStates[data.intent];
-        if (intentState.displayReadyCapability.promise) {
-          intentState.displayReadyCapability.reject(data.error);
-        } else {
-          error(data.error);
-        }
-      }, this);
-
-      messageHandler.on('JpegDecode', function(data) {
-        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;
-        });
-      });
-    },
-
-    fetchDocument: function WorkerTransport_fetchDocument(source) {
-      source.disableAutoFetch = PDFJS.disableAutoFetch;
-      source.chunkedViewerLoading = !!this.pdfDataRangeTransport;
-      this.messageHandler.send('GetDocRequest', {
-        source: source,
-        disableRange: PDFJS.disableRange,
-        maxImageSize: PDFJS.maxImageSize,
-        cMapUrl: PDFJS.cMapUrl,
-        cMapPacked: PDFJS.cMapPacked,
-        disableFontFace: PDFJS.disableFontFace,
-        disableCreateObjectURL: PDFJS.disableCreateObjectURL,
-        verbosity: PDFJS.verbosity
-      });
-    },
-
-    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) {
-        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) {
-      return this.messageHandler.sendWithPromise('GetAnnotations',
-        { pageIndex: pageIndex });
-    },
-
-    getDestinations: function WorkerTransport_getDestinations() {
-      return this.messageHandler.sendWithPromise('GetDestinations', 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 PDFJS.Metadata(results[1]) : 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.destroy();
-          }
-        }
-        this.commonObjs.clear();
-        FontLoader.clear();
-      }.bind(this));
-    }
-  };
-  return WorkerTransport;
-
-})();
-
-/**
- * A PDF document and page is built of many objects. E.g. there are objects
- * for fonts, images, rendering code and such. These objects might get processed
- * inside of a worker. The `PDFObjects` implements some basic functions to
- * manage these objects.
- * @ignore
- */
-var PDFObjects = (function PDFObjectsClosure() {
-  function PDFObjects() {
-    this.objs = {};
-  }
-
-  PDFObjects.prototype = {
-    /**
-     * Internal function.
-     * Ensures there is an object defined for `objId`.
-     */
-    ensureObj: function PDFObjects_ensureObj(objId) {
-      if (this.objs[objId]) {
-        return this.objs[objId];
-      }
-
-      var obj = {
-        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 = {};
-    }
-  };
-  return PDFObjects;
-})();
-
-/**
- * Allows controlling of the rendering tasks.
- * @class
- */
-var RenderTask = (function RenderTaskClosure() {
-  function RenderTask(internalRenderTask) {
-    this.internalRenderTask = internalRenderTask;
-    /**
-     * Promise for rendering task completion.
-     * @type {Promise}
-     */
-    this.promise = this.internalRenderTask.capability.promise;
-  }
-
-  RenderTask.prototype = /** @lends RenderTask.prototype */ {
-    /**
-     * 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 callback 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(onFulfilled, onRejected);
-    }
-  };
-
-  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.cancelled = false;
-    this.capability = createPromiseCapability();
-    // 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 (PDFJS.pdfBug && 'StepperManager' in globalScope &&
-          globalScope.StepperManager.enabled) {
-        this.stepper = globalScope.StepperManager.create(this.pageNumber - 1);
-        this.stepper.init(this.operatorList);
-        this.stepper.nextBreakPoint = this.stepper.getNextBreakPoint();
-      }
-
-      var params = this.params;
-      this.gfx = new CanvasGraphics(params.canvasContext, this.commonObjs,
-                                    this.objs, params.imageLayer);
-
-      this.gfx.beginDrawing(params.viewport, transparency);
-      this.operatorListIdx = 0;
-      this.graphicsReady = true;
-      if (this.graphicsReadyCallback) {
-        this.graphicsReadyCallback();
-      }
-    },
-
-    cancel: function InternalRenderTask_cancel() {
-      this.running = false;
-      this.cancelled = true;
-      this.callback('cancelled');
-    },
-
-    operatorListChanged: function InternalRenderTask_operatorListChanged() {
-      if (!this.graphicsReady) {
-        if (!this.graphicsReadyCallback) {
-          this.graphicsReadyCallback = this._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.params.continueCallback) {
-        this.params.continueCallback(this._scheduleNextBound);
-      } else {
-        this._scheduleNext();
-      }
-    },
-
-    _scheduleNext: function InternalRenderTask__scheduleNext() {
-      window.requestAnimationFrame(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;
-})();
-
-
-var Metadata = PDFJS.Metadata = (function MetadataClosure() {
-  function fixMetadata(meta) {
-    return meta.replace(/>\\376\\377([^<]+)/g, function(all, codes) {
-      var bytes = codes.replace(/\\([0-3])([0-7])([0-7])/g,
-                                function(code, d1, d2, d3) {
-        return String.fromCharCode(d1 * 64 + d2 * 8 + d3 * 1);
-      });
-      var chars = '';
-      for (var i = 0; i < bytes.length; i += 2) {
-        var code = bytes.charCodeAt(i) * 256 + bytes.charCodeAt(i + 1);
-        chars += code >= 32 && code < 127 && code != 60 && code != 62 &&
-          code != 38 && false ? String.fromCharCode(code) :
-          '&#x' + (0x10000 + code).toString(16).substring(1) + ';';
-      }
-      return '>' + chars;
-    });
-  }
-
-  function Metadata(meta) {
-    if (typeof meta === 'string') {
-      // Ghostscript produces invalid metadata
-      meta = fixMetadata(meta);
-
-      var parser = new DOMParser();
-      meta = parser.parseFromString(meta, 'application/xml');
-    } else if (!(meta instanceof Document)) {
-      error('Metadata: Invalid metadata object');
-    }
-
-    this.metaDocument = meta;
-    this.metadata = {};
-    this.parse();
-  }
-
-  Metadata.prototype = {
-    parse: function Metadata_parse() {
-      var doc = this.metaDocument;
-      var rdf = doc.documentElement;
-
-      if (rdf.nodeName.toLowerCase() !== 'rdf:rdf') { // Wrapped in <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';
-    }
-  };
-
-  return Metadata;
-})();
-
-
-// <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;
-var MAX_GROUP_SIZE = 4096;
-
-var COMPILE_TYPE3_GLYPHS = true;
-
-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 on.
-  if (!ctx.mozCurrentTransform) {
-    // Store the original context
-    ctx._scaleX = ctx._scaleX || 1.0;
-    ctx._scaleY = ctx._scaleY || 1.0;
-    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._scaleX, 0, 0, ctx._scaleY, 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() {
-  var cache = {};
-  return {
-    getCanvas: function CachedCanvases_getCanvas(id, width, height,
-                                                 trackTransform) {
-      var canvasEntry;
-      if (id in cache) {
-        canvasEntry = 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);
-        }
-        cache[id] = canvasEntry = {canvas: canvas, context: ctx};
-      }
-      return canvasEntry;
-    },
-    clear: function () {
-      cache = {};
-    }
-  };
-})();
-
-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';
-    // Note: fill alpha applies to all non-stroking operations
-    this.fillAlpha = 1;
-    this.strokeAlpha = 1;
-    this.lineWidth = 1;
-    this.activeSMask = 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;
-
-  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;
-    if (canvasCtx) {
-      addContextCurrentTransform(canvasCtx);
-    }
-  }
-
-  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 fullChunkHeight = 16;
-    var fracChunks = height / fullChunkHeight;
-    var fullChunks = Math.floor(fracChunks);
-    var totalChunks = Math.ceil(fracChunks);
-    var partialChunkHeight = height - fullChunks * fullChunkHeight;
-
-    var chunkImgData = ctx.createImageData(width, fullChunkHeight);
-    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 = PDFJS.hasCanvasTypedArrays ? new Uint32Array(dest.buffer) :
-        new Uint32ArrayView(dest);
-      var dest32DataLength = dest32.length;
-      var fullSrcDiff = (width + 7) >> 3;
-      var white = 0xFFFFFFFF;
-      var black = (PDFJS.isLittleEndian || !PDFJS.hasCanvasTypedArrays) ?
-        0xFF000000 : 0x000000FF;
-      for (i = 0; i < totalChunks; i++) {
-        thisChunkHeight =
-          (i < fullChunks) ? fullChunkHeight : 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 * fullChunkHeight);
-      }
-    } else if (imgData.kind === ImageKind.RGBA_32BPP) {
-      // RGBA, 32-bits per pixel.
-
-      j = 0;
-      elemsInThisChunk = width * fullChunkHeight * 4;
-      for (i = 0; i < fullChunks; i++) {
-        dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
-        srcPos += elemsInThisChunk;
-
-        ctx.putImageData(chunkImgData, 0, j);
-        j += fullChunkHeight;
-      }
-      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 = fullChunkHeight;
-      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 * fullChunkHeight);
-      }
-    } else {
-      error('bad image kind: ' + imgData.kind);
-    }
-  }
-
-  function putBinaryImageMask(ctx, imgData) {
-    var height = imgData.height, width = imgData.width;
-    var fullChunkHeight = 16;
-    var fracChunks = height / fullChunkHeight;
-    var fullChunks = Math.floor(fracChunks);
-    var totalChunks = Math.ceil(fracChunks);
-    var partialChunkHeight = height - fullChunks * fullChunkHeight;
-
-    var chunkImgData = ctx.createImageData(width, fullChunkHeight);
-    var srcPos = 0;
-    var src = imgData.data;
-    var dest = chunkImgData.data;
-
-    for (var i = 0; i < totalChunks; i++) {
-      var thisChunkHeight =
-        (i < fullChunks) ? fullChunkHeight : 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 * fullChunkHeight);
-    }
-  }
-
-  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 (property in sourceCtx) {
-        destCtx[property] = sourceCtx[property];
-      }
-    }
-    if ('setLineDash' in sourceCtx) {
-      destCtx.setLineDash(sourceCtx.getLineDash());
-      destCtx.lineDashOffset =  sourceCtx.lineDashOffset;
-    } else if ('mozDash' in sourceCtx) {
-      destCtx.mozDash = sourceCtx.mozDash;
-      destCtx.mozDashOffset = sourceCtx.mozDashOffset;
-    }
-  }
-
-  function genericComposeSMask(maskCtx, layerCtx, width, height,
-                               subtype, backdrop) {
-    var addBackdropFn;
-    if (backdrop) {
-      addBackdropFn = function (r0, g0, b0, bytes) {
-        var length = bytes.length;
-        for (var i = 3; i < length; i += 4) {
-          var alpha = bytes[i] / 255;
-          if (alpha === 0) {
-            bytes[i - 3] = r0;
-            bytes[i - 2] = g0;
-            bytes[i - 1] = b0;
-          } else if (alpha < 1) {
-            var alpha_ = 1 - alpha;
-            bytes[i - 3] = (bytes[i - 3] * alpha + r0 * alpha_) | 0;
-            bytes[i - 2] = (bytes[i - 2] * alpha + g0 * alpha_) | 0;
-            bytes[i - 1] = (bytes[i - 1] * alpha + b0 * alpha_) | 0;
-          }
-        }
-      }.bind(null, backdrop[0], backdrop[1], backdrop[2]);
-    } else {
-      addBackdropFn = function () {};
-    }
-
-    var composeFn;
-    if (subtype === 'Luminosity') {
-      composeFn = function (maskDataBytes, layerDataBytes) {
-        var length = maskDataBytes.length;
-        for (var i = 3; i < length; i += 4) {
-          var y = ((maskDataBytes[i - 3] * 77) +     // * 0.3 / 255 * 0x10000
-                   (maskDataBytes[i - 2] * 152) +    // * 0.59 ....
-                   (maskDataBytes[i - 1] * 28)) | 0; // * 0.11 ....
-          layerDataBytes[i] = (layerDataBytes[i] * y) >> 16;
-        }
-      };
-    } else {
-      composeFn = function (maskDataBytes, layerDataBytes) {
-        var length = maskDataBytes.length;
-        for (var i = 3; i < length; i += 4) {
-          var alpha = maskDataBytes[i];
-          layerDataBytes[i] = (layerDataBytes[i] * alpha / 255) | 0;
-        }
-      };
-    }
-
-    // processing image in chunks to save memory
-    var PIXELS_TO_PROCESS = 65536;
-    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);
-
-      addBackdropFn(maskData.data);
-      composeFn(maskData.data, layerData.data);
-
-      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 (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);
-    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(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, so we fill with white if
-      // we can.
-      var width = this.ctx.canvas.width;
-      var height = this.ctx.canvas.height;
-      if (transparency) {
-        this.ctx.clearRect(0, 0, width, height);
-      } else {
-        this.ctx.mozOpaque = true;
-        this.ctx.save();
-        this.ctx.fillStyle = 'rgb(255, 255, 255)';
-        this.ctx.fillRect(0, 0, width, height);
-        this.ctx.restore();
-      }
-
-      var transform = viewport.transform;
-
-      this.ctx.save();
-      this.ctx.transform.apply(this.ctx, 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 endTime = Date.now() + EXECUTION_TIME;
-
-      var commonObjs = this.commonObjs;
-      var objs = this.objs;
-      var fnId;
-
-      while (true) {
-        if (stepper && 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.substring(0, 2) == 'g_';
-
-            // If the promise isn't resolved yet, add the continueCallback
-            // to the promise and bail out.
-            if (!common && !objs.isResolved(depObjId)) {
-              objs.get(depObjId, continueCallback);
-              return i;
-            }
-            if (common && !commonObjs.isResolved(depObjId)) {
-              commonObjs.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 (continueCallback && Date.now() > endTime) {
-          continueCallback();
-          return i;
-        }
-
-        // If the operatorList isn't executed completely yet OR the execution
-        // time was short enough, do another execution round.
-      }
-    },
-
-    endDrawing: function CanvasGraphics_endDrawing() {
-      this.ctx.restore();
-      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 ('setLineDash' in ctx) {
-        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) {
-              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 = 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);
-
-      copyCtxState(currentCtx, groupCtx);
-      this.ctx = groupCtx;
-      this.setGState([
-        ['BM', 'Normal'],
-        ['ca', 1],
-        ['CA', 1]
-      ]);
-      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();
-    },
-    save: function CanvasGraphics_save() {
-      this.ctx.save();
-      var old = this.current;
-      this.stateStack.push(old);
-      this.current = old.clone();
-      if (this.current.activeSMask) {
-        this.current.activeSMask = null;
-      }
-    },
-    restore: function CanvasGraphics_restore() {
-      var prev = this.stateStack.pop();
-      if (prev) {
-        if (this.current.activeSMask) {
-          this.endSMaskGroup();
-        }
-
-        this.current = prev;
-        this.ctx.restore();
-      }
-    },
-    transform: function CanvasGraphics_transform(a, b, c, d, e, f) {
-      this.ctx.transform(a, b, c, d, e, f);
-    },
-
-    // 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.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();
-    },
-    rectangle: function CanvasGraphics_rectangle(x, y, width, height) {
-      if (width === 0) {
-        width = this.getSinglePixelWidth();
-      }
-      if (height === 0) {
-        height = this.getSinglePixelWidth();
-      }
-
-      this.ctx.rect(x, y, width, height);
-    },
-    stroke: function CanvasGraphics_stroke(consumePath) {
-      consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
-      var ctx = this.ctx;
-      var strokeColor = this.current.strokeColor;
-      if (this.current.lineWidth === 0) {
-        ctx.lineWidth = this.getSinglePixelWidth();
-      }
-      // 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 needRestore = false;
-
-      if (fillColor && fillColor.hasOwnProperty('type') &&
-          fillColor.type === 'Pattern') {
-        ctx.save();
-        ctx.fillStyle = fillColor.getPattern(ctx, this);
-        needRestore = true;
-      }
-
-      if (this.pendingEOFill) {
-        if (ctx.mozFillRule !== undefined) {
-          ctx.mozFillRule = 'evenodd';
-          ctx.fill();
-          ctx.mozFillRule = 'nonzero';
-        } else {
-          try {
-            ctx.fill('evenodd');
-          } catch (ex) {
-            // shouldn't really happen, but browsers might think differently
-            ctx.fill();
-          }
-        }
-        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 ? 'bolder' : '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 ? size : MIN_FONT_SIZE;
-      this.current.fontSizeScale = browserFontSize != MIN_FONT_SIZE ? 1.0 :
-                                   size / MIN_FONT_SIZE;
-
-      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 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 (fontDirection > 0) {
-        ctx.scale(textHScale, -1);
-      } else {
-        ctx.scale(textHScale, 1);
-      }
-
-      var lineWidth = current.lineWidth;
-      var scale = current.textMatrixScale;
-      if (scale === 0 || lineWidth === 0) {
-        lineWidth = this.getSinglePixelWidth();
-      } 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 (glyph === null) {
-          // word break
-          x += fontDirection * wordSpacing;
-          continue;
-        } else if (isNum(glyph)) {
-          x += -glyph * fontSize * 0.001;
-          continue;
-        }
-
-        var restoreNeeded = false;
-        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 && this.isFontSubpixelAAEnabled) {
-          // some standard fonts may not have the exact width, trying to
-          // rescale per character
-          var measuredWidth = ctx.measureText(character).width * 1000 /
-            fontSize * fontSizeScale;
-          var characterScaleX = width / measuredWidth;
-          restoreNeeded = true;
-          ctx.save();
-          ctx.scale(characterScaleX, 1);
-          scaledX /= characterScaleX;
-        }
-
-        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 + charSpacing * 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 charSpacing = current.charSpacing;
-      var wordSpacing = current.wordSpacing;
-      var textHScale = current.textHScale * fontDirection;
-      var fontMatrix = current.fontMatrix || FONT_IDENTITY_MATRIX;
-      var glyphsLength = glyphs.length;
-      var i, glyph, width;
-
-      if (fontSize === 0) {
-        return;
-      }
-
-      ctx.save();
-      ctx.transform.apply(ctx, current.textMatrix);
-      ctx.translate(current.x, current.y);
-
-      ctx.scale(textHScale, 1);
-
-      for (i = 0; i < glyphsLength; ++i) {
-        glyph = glyphs[i];
-        if (glyph === null) {
-          // word break
-          this.ctx.translate(wordSpacing, 0);
-          current.x += wordSpacing * textHScale;
-          continue;
-        } else if (isNum(glyph)) {
-          var spacingLength = -glyph * 0.001 * fontSize;
-          this.ctx.translate(spacingLength, 0);
-          current.x += spacingLength * textHScale;
-          continue;
-        }
-
-        this.processingType3 = glyph;
-        this.save();
-        ctx.scale(fontSize, fontSize);
-        ctx.transform.apply(ctx, fontMatrix);
-        var operatorList = font.charProcOperatorList[glyph.operatorListId];
-        this.executeOperatorList(operatorList);
-        this.restore();
-
-        var transformed = Util.applyTransform([glyph.width, 0], fontMatrix);
-        width = ((transformed[0] * fontSize + charSpacing) * fontDirection);
-
-        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.rectangle(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];
-        pattern = new TilingPattern(IR, color, this.ctx, this.objs,
-                                    this.commonObjs, this.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);
-    },
-    setStrokeRGBColor: function CanvasGraphics_setStrokeRGBColor(r, g, b) {
-      var color = Util.makeCssRgb(arguments);
-      this.ctx.strokeStyle = color;
-      this.current.strokeColor = color;
-    },
-    setFillRGBColor: function CanvasGraphics_setFillRGBColor(r, g, b) {
-      var color = Util.makeCssRgb(arguments);
-      this.ctx.fillStyle = color;
-      this.current.fillColor = color;
-    },
-
-    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 (matrix && isArray(matrix) && 6 == matrix.length) {
-        this.transform.apply(this, matrix);
-      }
-
-      this.baseTransform = this.ctx.mozCurrentTransform;
-
-      if (bbox && isArray(bbox) && 4 == bbox.length) {
-        var width = bbox[2] - bbox[0];
-        var height = bbox[3] - bbox[1];
-        this.rectangle(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 = 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
-        });
-      } 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++;
-    },
-
-    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();
-    },
-
-    endAnnotations: function CanvasGraphics_endAnnotations() {
-      this.restore();
-    },
-
-    beginAnnotation: function CanvasGraphics_beginAnnotation(rect, transform,
-                                                             matrix) {
-      this.save();
-
-      if (rect && isArray(rect) && 4 == rect.length) {
-        var width = rect[2] - rect[0];
-        var height = rect[3] - rect[1];
-        this.rectangle(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 glyph = this.processingType3;
-
-      if (COMPILE_TYPE3_GLYPHS && glyph && !('compiled' in glyph)) {
-        var MAX_SIZE_TO_COMPILE = 1000;
-        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 = CachedCanvases.getCanvas('maskCanvas', width, height);
-      var maskCtx = maskCanvas.context;
-      maskCtx.save();
-
-      putBinaryImageMask(maskCtx, img);
-
-      maskCtx.globalCompositeOperation = 'source-in';
-
-      var fillColor = this.current.fillColor;
-      maskCtx.fillStyle = (fillColor && fillColor.hasOwnProperty('type') &&
-                          fillColor.type === 'Pattern') ?
-                          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 ctx = this.ctx;
-
-      var maskCanvas = CachedCanvases.getCanvas('maskCanvas', width, height);
-      var maskCtx = maskCanvas.context;
-      maskCtx.save();
-
-      putBinaryImageMask(maskCtx, imgData);
-
-      maskCtx.globalCompositeOperation = 'source-in';
-
-      var fillColor = this.current.fillColor;
-      maskCtx.fillStyle = (fillColor && fillColor.hasOwnProperty('type') &&
-        fillColor.type === 'Pattern') ?
-        fillColor.getPattern(maskCtx, this) : fillColor;
-      maskCtx.fillRect(0, 0, width, height);
-
-      maskCtx.restore();
-
-      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;
-
-      for (var i = 0, ii = images.length; i < ii; i++) {
-        var image = images[i];
-        var width = image.width, height = image.height;
-
-        var maskCanvas = CachedCanvases.getCanvas('maskCanvas', width, height);
-        var maskCtx = maskCanvas.context;
-        maskCtx.save();
-
-        putBinaryImageMask(maskCtx, image);
-
-        maskCtx.globalCompositeOperation = 'source-in';
-
-        var fillColor = this.current.fillColor;
-        maskCtx.fillStyle = (fillColor && fillColor.hasOwnProperty('type') &&
-                            fillColor.type === 'Pattern') ?
-                            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 = 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 = 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 = 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);
-    },
-
-    // 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 {
-            try {
-              ctx.clip('evenodd');
-            } catch (ex) {
-              // shouldn't really happen, but browsers might think differently
-              ctx.clip();
-            }
-          }
-        } else {
-          ctx.clip();
-        }
-        this.pendingClip = null;
-      }
-      ctx.beginPath();
-    },
-    getSinglePixelWidth: function CanvasGraphics_getSinglePixelWidth(scale) {
-      var inverse = this.ctx.mozCurrentTransformInverse;
-      // max of the current horizontal and vertical scale
-      return Math.sqrt(Math.max(
-        (inverse[0] * inverse[0] + inverse[1] * inverse[1]),
-        (inverse[2] * inverse[2] + inverse[3] * inverse[3])));
-    },
-    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;
-})();
-
-
-
-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 generageGL() {
-    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;
-
-    generageGL();
-    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;
-
-    generageGL();
-    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[i]];
-            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() {
-    smaskCache = null;
-    figuresCache = null;
-  }
-
-  return {
-    get isEnabled() {
-      if (PDFJS.disableWebGL) {
-        return false;
-      }
-      var enabled = false;
-      try {
-        generageGL();
-        enabled = !!currentGL;
-      } catch (e) { }
-      return shadow(this, 'isEnabled', enabled);
-    },
-    composeSMask: composeSMask,
-    drawFigures: drawFigures,
-    clear: cleanup
-  };
-})();
-
-
-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) {
-    // 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
-
-    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 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', width, height, false);
-      tmpCanvas.context.drawImage(canvas, 0, 0);
-      canvas = tmpCanvas.canvas;
-    } else {
-      tmpCanvas = CachedCanvases.getCanvas('mesh', width, height, 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, 0, 0);
-      canvas = tmpCanvas.canvas;
-    }
-
-    return {canvas: canvas, offsetX: offsetX, offsetY: offsetY,
-            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 combinedScale;
-        // Obtain scale from matrix and current transformation matrix.
-        if (shadingFill) {
-          combinedScale = Util.singularValueDecompose2dScale(
-            ctx.mozCurrentTransform);
-        } else {
-          var matrixScale = Util.singularValueDecompose2dScale(matrix);
-          var curMatrixScale = Util.singularValueDecompose2dScale(
-            owner.baseTransform);
-          combinedScale = [matrixScale[0] * curMatrixScale[0],
-            matrixScale[1] * curMatrixScale[1]];
-        }
-
-
-        // Rasterizing on the main thread since sending/queue large canvases
-        // might cause OOM.
-        var temporaryPatternCanvas = createMeshCanvas(bounds, combinedScale,
-          coords, colors, figures, shadingFill ? null : background);
-
-        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, objs, commonObjs, 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.objs = objs;
-    this.commonObjs = commonObjs;
-    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 objs = this.objs;
-      var commonObjs = this.commonObjs;
-
-      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 = CachedCanvases.getCanvas('pattern', width, height, true);
-      var tmpCtx = tmpCanvas.context;
-      var graphics = new CanvasGraphics(tmpCtx, commonObjs, objs);
-      graphics.groupLevel = owner.groupLevel;
-
-      this.setFillAndStrokeStyleToContext(tmpCtx, paintType, color);
-
-      this.setScale(width, height, xstep, ystep);
-      this.transformToScale(graphics);
-
-      // transform coordinates to pattern space
-      var tmpTranslate = [1, 0, 0, 1, -topLeft[0], -topLeft[1]];
-      graphics.transform.apply(graphics, tmpTranslate);
-
-      this.clipBbox(graphics, bbox, x0, y0, x1, y1);
-
-      graphics.executeOperatorList(operatorList);
-      return tmpCanvas.canvas;
-    },
-
-    setScale: function TilingPattern_setScale(width, height, xstep, ystep) {
-      this.scale = [width / xstep, height / ystep];
-    },
-
-    transformToScale: function TilingPattern_transformToScale(graphics) {
-      var scale = this.scale;
-      var tmpScale = [scale[0], 0, 0, scale[1], 0, 0];
-      graphics.transform.apply(graphics, tmpScale);
-    },
-
-    scaleToContext: function TilingPattern_scaleToContext() {
-      var scale = this.scale;
-      this.ctx.scale(1 / scale[0], 1 / scale[1]);
-    },
-
-    clipBbox: function clipBbox(graphics, bbox, x0, y0, x1, y1) {
-      if (bbox && isArray(bbox) && 4 == bbox.length) {
-        var bboxWidth = x1 - x0;
-        var bboxHeight = y1 - y0;
-        graphics.rectangle(x0, y0, bboxWidth, bboxHeight);
-        graphics.clip();
-        graphics.endPath();
-      }
-    },
-
-    setFillAndStrokeStyleToContext:
-      function setFillAndStrokeStyleToContext(context, paintType, color) {
-        switch (paintType) {
-          case PaintType.COLORED:
-            var ctx = this.ctx;
-            context.fillStyle = ctx.fillStyle;
-            context.strokeStyle = ctx.strokeStyle;
-            break;
-          case PaintType.UNCOLORED:
-            var cssColor = Util.makeCssRgb(color);
-            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;
-})();
-
-
-PDFJS.disableFontFace = false;
-
-var FontLoader = {
-  insertRule: function fontLoaderInsertRule(rule) {
-    var styleElement = document.getElementById('PDFJS_FONT_STYLE_TAG');
-    if (!styleElement) {
-      styleElement = document.createElement('style');
-      styleElement.id = 'PDFJS_FONT_STYLE_TAG';
-      document.documentElement.getElementsByTagName('head')[0].appendChild(
-        styleElement);
-    }
-
-    var styleSheet = styleElement.sheet;
-    styleSheet.insertRule(rule, styleSheet.cssRules.length);
-  },
-
-  clear: function fontLoaderClear() {
-    var styleElement = document.getElementById('PDFJS_FONT_STYLE_TAG');
-    if (styleElement) {
-      styleElement.parentNode.removeChild(styleElement);
-    }
-  },
-  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=='
-    ));
-  },
-
-  loadTestFontId: 0,
-
-  loadingContext: {
-    requests: [],
-    nextRequestId: 0
-  },
-
-  isSyncFontLoadingSupported: (function detectSyncFontLoadingSupport() {
-    if (isWorker) {
-      return 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 userAgent = window.navigator.userAgent;
-    var m = /Mozilla\/5.0.*?rv:(\d+).*? Gecko/.exec(userAgent);
-    if (m && m[1] >= 14) {
-      return true;
-    }
-    // TODO other browsers
-    return false;
-  })(),
-
-  bind: function fontLoaderBind(fonts, callback) {
-    assert(!isWorker, 'bind() shall be called from main thread');
-
-    var rules = [], fontsToLoad = [];
-    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;
-
-      var rule = font.bindDOM();
-      if (rule) {
-        rules.push(rule);
-        fontsToLoad.push(font);
-      }
-    }
-
-    var request = FontLoader.queueLoadingCallback(callback);
-    if (rules.length > 0 && !this.isSyncFontLoadingSupported) {
-      FontLoader.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 = FontLoader.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 + '}';
-      FontLoader.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 */
-  }
-};
-
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-      // importing translated data
-      var data = arguments[0];
-      for (var i in data) {
-        this[i] = data[i];
-      }
-      return;
-    }
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-        return null;
-      }
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-        this.disableFontFace = true;
-        return null;
-      }
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-      var fontName = this.loadedName;
-
-      // Add the font-face rule to the document
-      var url = ('url(data:' + this.mimetype + ';base64,' +
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-      var rule = '@font-face { font-family:"' + fontName + '";src:' + url + '}';
-      FontLoader.insertRule(rule);
-
-      if (PDFJS.pdfBug && 'FontInspector' in globalScope &&
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-        globalScope['FontInspector'].fontAdded(this, url);
-      }
-
-      return rule;
-    },
-
-    getPathGenerator: function (objs, character) {
-      if (!(character in this.compiledGlyphs)) {
-        var js = objs.get(this.loadedName + '_path_' + character);
-        /*jshint -W054 */
-        this.compiledGlyphs[character] = new Function('c', 'size', js);
-      }
-      return this.compiledGlyphs[character];
-    }
-  };
-  return FontFace;
-})();
-
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-if (!PDFJS.workerSrc && typeof document !== 'undefined') {
-  // workerSrc is not set -- using last script url to define default location
-  PDFJS.workerSrc = (function () {
-    'use strict';
-    var scriptTagContainer = document.body ||
-                             document.getElementsByTagName('head')[0];
-    var pdfjsSrc = scriptTagContainer.lastChild.src;
-    return pdfjsSrc && pdfjsSrc.replace(/\.js$/i, '.worker.js');
-  })();
-}
-
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Z(o,s,e,a),o.promise.then(function(){c.passwordCallback=r,c.fetchDocument(l)}),s.promise};var q=function(){function t(t,e){this.pdfInfo=t,this.transport=e}return t.prototype={get numPages(){return this.pdfInfo.numPages},get fingerprint(){return this.pdfInfo.fingerprint},getPage:function(t){return this.transport.getPage(t)},getPageIndex:function(t){return this.transport.getPageIndex(t)},getDestinations:function(){return this.transport.getDestinations()},getAttachments:function(){return this.transport.getAttachments()},getJavaScript:function(){return this.transport.getJavaScript()},getOutline:function(){return this.transport.getOutline()},getMetadata:function(){return this.transport.getMetadata()},getData:function(){return this.transport.getData()},getDownloadInfo:function(){return this.transport.downloadInfoCapability.promise
+},cleanup:function(){this.transport.startCleanup()},destroy:function(){this.transport.destroy()}},t}(),K=function(){function t(t,e,n){this.pageIndex=t,this.pageInfo=e,this.transport=n,this.stats=new W,this.stats.enabled=!!D.PDFJS.enableStats,this.commonObjs=n.commonObjs,this.objs=new $,this.cleanupAfterRender=!1,this.pendingDestroy=!1,this.intentStates={}}return t.prototype={get pageNumber(){return this.pageIndex+1},get rotate(){return this.pageInfo.rotate},get ref(){return this.pageInfo.ref},get view(){return this.pageInfo.view},getViewport:function(t,e){return arguments.length<2&&(e=this.rotate),new PDFJS.PageViewport(this.view,t,e,0,0)},getAnnotations:function(){if(this.annotationsPromise)return this.annotationsPromise;var t=this.transport.getAnnotations(this.pageIndex);return this.annotationsPromise=t,t},render:function(t){function e(t){var e=a.renderTasks.indexOf(i);e>=0&&a.renderTasks.splice(e,1),s.cleanupAfterRender&&(s.pendingDestroy=!0),s._tryDestroy(),t?i.capability.reject(t):i.capability.resolve(),n.timeEnd("Rendering"),n.timeEnd("Overall")}var n=this.stats;n.time("Overall"),this.pendingDestroy=!1;var r="intent"in t&&"print"==t.intent?"print":"display";this.intentStates[r]||(this.intentStates[r]={});var a=this.intentStates[r];a.displayReadyCapability||(a.receivingOperatorList=!0,a.displayReadyCapability=b(),a.operatorList={fnArray:[],argsArray:[],lastChunk:!1},this.stats.time("Page Request"),this.transport.messageHandler.send("RenderPageRequest",{pageIndex:this.pageNumber-1,intent:r}));var i=new ee(e,t,this.objs,this.commonObjs,a.operatorList,this.pageNumber);a.renderTasks||(a.renderTasks=[]),a.renderTasks.push(i);var o=new te(i),s=this;return a.displayReadyCapability.promise.then(function(t){return s.pendingDestroy?void e():(n.time("Rendering"),i.initalizeGraphics(t),void i.operatorListChanged())},function(t){e(t)}),o},getTextContent:function(){return this.transport.messageHandler.sendWithPromise("GetTextContent",{pageIndex:this.pageNumber-1})},destroy:function(){this.pendingDestroy=!0,this._tryDestroy()},_tryDestroy:function(){this.pendingDestroy&&!Object.keys(this.intentStates).some(function(t){var e=this.intentStates[t];return 0!==e.renderTasks.length||e.receivingOperatorList},this)&&(Object.keys(this.intentStates).forEach(function(t){delete this.intentStates[t]},this),this.objs.clear(),this.annotationsPromise=null,this.pendingDestroy=!1)},_startRenderPage:function(t,e){var n=this.intentStates[e];n.displayReadyCapability.resolve(t)},_renderPageChunk:function(t,e){var n,r,a=this.intentStates[e];for(n=0,r=t.length;r>n;n++)a.operatorList.fnArray.push(t.fnArray[n]),a.operatorList.argsArray.push(t.argsArray[n]);for(a.operatorList.lastChunk=t.lastChunk,n=0;n<a.renderTasks.length;n++)a.renderTasks[n].operatorListChanged();t.lastChunk&&(a.receivingOperatorList=!1,this._tryDestroy())}},t}(),Z=function(){function r(e,r,a,i){if(this.pdfDataRangeTransport=a,this.workerReadyCapability=r,this.progressCallback=i,this.commonObjs=new $,this.pageCache=[],this.pagePromises=[],this.downloadInfoCapability=b(),this.passwordCallback=null,!D.PDFJS.disableWorker&&"undefined"!=typeof Worker){var o=PDFJS.workerSrc;o||n("No PDFJS.workerSrc specified");try{var s=new Worker(o),c=new y("main",s);this.messageHandler=c,c.on("test",function(t){var n=t&&t.supportTypedArray;n?(this.worker=s,t.supportTransfers||(PDFJS.postMessageTransfers=!1),this.setupMessageHandler(c),e.resolve()):(D.PDFJS.disableWorker=!0,this.loadFakeWorkerFiles().then(function(){this.setupFakeWorker(),e.resolve()}.bind(this)))}.bind(this));var l=new Uint8Array([PDFJS.postMessageTransfers?255:0]);try{c.send("test",l,[l.buffer])}catch(h){t("Cannot use postMessage transfers"),l[0]=0,c.send("test",l)}return}catch(u){t("The worker has been disabled.")}}D.PDFJS.disableWorker=!0,this.loadFakeWorkerFiles().then(function(){this.setupFakeWorker(),e.resolve()}.bind(this))}return r.prototype={destroy:function(){this.pageCache=[],this.pagePromises=[];var t=this;this.messageHandler.sendWithPromise("Terminate",null).then(function(){fe.clear(),t.worker&&t.worker.terminate()})},loadFakeWorkerFiles:function(){return PDFJS.fakeWorkerFilesLoadedCapability||(PDFJS.fakeWorkerFilesLoadedCapability=b(),J.loadScript(PDFJS.workerSrc,function(){PDFJS.fakeWorkerFilesLoadedCapability.resolve()})),PDFJS.fakeWorkerFilesLoadedCapability.promise},setupFakeWorker:function(){e("Setting up fake worker.");var t={postMessage:function(e){t.onmessage({data:e})},terminate:function(){}},n=new y("main",t);this.setupMessageHandler(n),PDFJS.WorkerMessageHandler.setup(n)},setupMessageHandler:function(t){function r(e){t.send("UpdatePassword",e)}this.messageHandler=t;var a=this.pdfDataRangeTransport;a&&(a.addRangeListener(function(e,n){t.send("OnDataRange",{begin:e,chunk:n})}),a.addProgressListener(function(e){t.send("OnDataProgress",{loaded:e})}),t.on("RequestDataRange",function(t){a.requestDataRange(t.begin,t.end)},this)),t.on("GetDoc",function(t){var e=t.pdfInfo;this.numPages=t.pdfInfo.numPages;var n=new q(e,this);this.pdfDocument=n,this.workerReadyCapability.resolve(n)},this),t.on("NeedPassword",function(t){return this.passwordCallback?this.passwordCallback(r,I.NEED_PASSWORD):void this.workerReadyCapability.reject(t.exception.message,t.exception)},this),t.on("IncorrectPassword",function(t){return this.passwordCallback?this.passwordCallback(r,I.INCORRECT_PASSWORD):void this.workerReadyCapability.reject(t.exception.message,t.exception)},this),t.on("InvalidPDF",function(t){this.workerReadyCapability.reject(t.exception.name,t.exception)},this),t.on("MissingPDF",function(t){this.workerReadyCapability.reject(t.exception.message,t.exception)},this),t.on("UnknownError",function(t){this.workerReadyCapability.reject(t.exception.message,t.exception)},this),t.on("DataLoaded",function(t){this.downloadInfoCapability.resolve(t)},this),t.on("StartRenderPage",function(t){var e=this.pageCache[t.pageIndex];e.stats.timeEnd("Page Request"),e._startRenderPage(t.transparency,t.intent)},this),t.on("RenderPageChunk",function(t){var e=this.pageCache[t.pageIndex];e._renderPageChunk(t.operatorList,t.intent)},this),t.on("commonobj",function(t){var n=t[0],r=t[1];if(!this.commonObjs.hasData(n))switch(r){case"Font":var a,i=t[2];if("error"in i){var o=i.error;e("Error during font loading: "+o),this.commonObjs.resolve(n,o);break}a=new de(i),fe.bind([a],function(){this.commonObjs.resolve(n,a)}.bind(this));break;case"FontPath":this.commonObjs.resolve(n,t[2]);break;default:o("Got unknown common object type "+r)}},this),t.on("obj",function(t){var e,r=t[0],a=t[1],i=t[2],o=this.pageCache[a];if(!o.objs.hasData(r))switch(i){case"JpegStream":e=t[3],S(r,e,o.objs);break;case"Image":e=t[3],o.objs.resolve(r,e);var s=8e6;e&&"data"in e&&e.data.length>s&&(o.cleanupAfterRender=!0);break;default:n("Got unknown object type "+i)}},this),t.on("DocProgress",function(t){this.progressCallback&&this.progressCallback({loaded:t.loaded,total:t.total})},this),t.on("DocError",function(t){this.workerReadyCapability.reject(t)},this),t.on("PageError",function(t){var e=this.pageCache[t.pageNum-1],r=e.intentStates[t.intent];r.displayReadyCapability.promise?r.displayReadyCapability.reject(t.error):n(t.error)},this),t.on("JpegDecode",function(t){var e=t[0],n=t[1];return 3!=n&&1!=n?Promise.reject(new Error("Only 3 components or 1 component can be returned")):new Promise(function(t,r){var a=new Image;a.onload=function(){var e=a.width,r=a.height,i=e*r,o=4*i,s=new Uint8Array(i*n),c=x(e,r),l=c.getContext("2d");l.drawImage(a,0,0);var h,u,f=l.getImageData(0,0,e,r).data;if(3==n)for(h=0,u=0;o>h;h+=4,u+=3)s[u]=f[h],s[u+1]=f[h+1],s[u+2]=f[h+2];else if(1==n)for(h=0,u=0;o>h;h+=4,u++)s[u]=f[h];t({data:s,width:e,height:r})},a.onerror=function(){r(new Error("JpegDecode failed to load image"))},a.src=e})})},fetchDocument:function(t){t.disableAutoFetch=PDFJS.disableAutoFetch,t.chunkedViewerLoading=!!this.pdfDataRangeTransport,this.messageHandler.send("GetDocRequest",{source:t,disableRange:PDFJS.disableRange,maxImageSize:PDFJS.maxImageSize,cMapUrl:PDFJS.cMapUrl,cMapPacked:PDFJS.cMapPacked,disableFontFace:PDFJS.disableFontFace,disableCreateObjectURL:PDFJS.disableCreateObjectURL,verbosity:PDFJS.verbosity})},getData:function(){return this.messageHandler.sendWithPromise("GetData",null)},getPage:function(t){if(0>=t||t>this.numPages||(0|t)!==t)return Promise.reject(new Error("Invalid page request"));var e=t-1;if(e in this.pagePromises)return this.pagePromises[e];var n=this.messageHandler.sendWithPromise("GetPage",{pageIndex:e}).then(function(t){var n=new K(e,t,this);return this.pageCache[e]=n,n}.bind(this));return this.pagePromises[e]=n,n},getPageIndex:function(t){return this.messageHandler.sendWithPromise("GetPageIndex",{ref:t})},getAnnotations:function(t){return this.messageHandler.sendWithPromise("GetAnnotations",{pageIndex:t})},getDestinations:function(){return this.messageHandler.sendWithPromise("GetDestinations",null)},getAttachments:function(){return this.messageHandler.sendWithPromise("GetAttachments",null)},getJavaScript:function(){return this.messageHandler.sendWithPromise("GetJavaScript",null)},getOutline:function(){return this.messageHandler.sendWithPromise("GetOutline",null)},getMetadata:function(){return this.messageHandler.sendWithPromise("GetMetadata",null).then(function(t){return{info:t[0],metadata:t[1]?new PDFJS.Metadata(t[1]):null}})},startCleanup:function(){this.messageHandler.sendWithPromise("Cleanup",null).then(function(){for(var t=0,e=this.pageCache.length;e>t;t++){var n=this.pageCache[t];n&&n.destroy()}this.commonObjs.clear(),fe.clear()}.bind(this))}},r}(),$=function(){function t(){this.objs={}}return t.prototype={ensureObj:function(t){if(this.objs[t])return this.objs[t];var e={capability:b(),data:null,resolved:!1};return this.objs[t]=e,e},get:function(t,e){if(e)return this.ensureObj(t).capability.promise.then(e),null;var r=this.objs[t];return r&&r.resolved||n("Requesting object that isn't resolved yet "+t),r.data},resolve:function(t,e){var n=this.ensureObj(t);n.resolved=!0,n.data=e,n.capability.resolve(e)},isResolved:function(t){var e=this.objs;return e[t]?e[t].resolved:!1},hasData:function(t){return this.isResolved(t)},getData:function(t){var e=this.objs;return e[t]&&e[t].resolved?e[t].data:null},clear:function(){this.objs={}}},t}(),te=function(){function t(t){this.internalRenderTask=t,this.promise=this.internalRenderTask.capability.promise}return t.prototype={cancel:function(){this.internalRenderTask.cancel()},then:function(t,e){return this.promise.then(t,e)}},t}(),ee=function(){function t(t,e,n,r,a,i){this.callback=t,this.params=e,this.objs=n,this.commonObjs=r,this.operatorListIdx=null,this.operatorList=a,this.pageNumber=i,this.running=!1,this.graphicsReadyCallback=null,this.graphicsReady=!1,this.cancelled=!1,this.capability=b(),this._continueBound=this._continue.bind(this),this._scheduleNextBound=this._scheduleNext.bind(this),this._nextBound=this._next.bind(this)}return t.prototype={initalizeGraphics:function(t){if(!this.cancelled){PDFJS.pdfBug&&"StepperManager"in D&&D.StepperManager.enabled&&(this.stepper=D.StepperManager.create(this.pageNumber-1),this.stepper.init(this.operatorList),this.stepper.nextBreakPoint=this.stepper.getNextBreakPoint());var e=this.params;this.gfx=new se(e.canvasContext,this.commonObjs,this.objs,e.imageLayer),this.gfx.beginDrawing(e.viewport,t),this.operatorListIdx=0,this.graphicsReady=!0,this.graphicsReadyCallback&&this.graphicsReadyCallback()}},cancel:function(){this.running=!1,this.cancelled=!0,this.callback("cancelled")},operatorListChanged:function(){return this.graphicsReady?(this.stepper&&this.stepper.updateOperatorList(this.operatorList),void(this.running||this._continue())):void(this.graphicsReadyCallback||(this.graphicsReadyCallback=this._continueBound))},_continue:function(){this.running=!0,this.cancelled||(this.params.continueCallback?this.params.continueCallback(this._scheduleNextBound):this._scheduleNext())},_scheduleNext:function(){window.requestAnimationFrame(this._nextBound)},_next:function(){this.cancelled||(this.operatorListIdx=this.gfx.executeOperatorList(this.operatorList,this.operatorListIdx,this._continueBound,this.stepper),this.operatorListIdx===this.operatorList.argsArray.length&&(this.running=!1,this.operatorList.lastChunk&&(this.gfx.endDrawing(),this.callback())))}},t}(),ne=(PDFJS.Metadata=function(){function t(t){return t.replace(/>\\376\\377([^<]+)/g,function(t,e){for(var n=e.replace(/\\([0-3])([0-7])([0-7])/g,function(t,e,n,r){return String.fromCharCode(64*e+8*n+1*r)}),r="",a=0;a<n.length;a+=2){var 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oe,this.stateStack=[],this.pendingClip=null,this.pendingEOFill=!1,this.res=null,this.xobjs=null,this.commonObjs=e,this.objs=n,this.imageLayer=r,this.groupStack=[],this.processingType3=null,this.baseTransform=null,this.baseTransformStack=[],this.groupLevel=0,this.smaskStack=[],this.smaskCounter=0,this.tempSMask=null,t&&P(t)}function i(t,e){if("undefined"!=typeof ImageData&&e instanceof ImageData)return void t.putImageData(e,0,0);var r,a,i,o,s,c=e.height,l=e.width,h=16,u=c/h,f=Math.floor(u),d=Math.ceil(u),A=c-f*h,p=t.createImageData(l,h),g=0,m=e.data,v=p.data;if(e.kind===R.GRAYSCALE_1BPP){var b=m.byteLength,y=PDFJS.hasCanvasTypedArrays?new Uint32Array(v.buffer):new O(v),S=y.length,x=l+7>>3,P=4294967295,C=PDFJS.isLittleEndian||!PDFJS.hasCanvasTypedArrays?4278190080:255;for(a=0;d>a;a++){for(o=f>a?h:A,r=0,i=0;o>i;i++){for(var k=b-g,D=0,T=k>x?l:8*k-7,w=-8&T,F=0,L=0;w>D;D+=8)L=m[g++],y[r++]=128&L?P:C,y[r++]=64&L?P:C,y[r++]=32&L?P:C,y[r++]=16&L?P:C,y[r++]=8&L?P:C,y[r++]=4&L?P:C,y[r++]=2&L?P:C,y[r++]=1&L?P:C;for(;T>D;D++)0===F&&(L=m[g++],F=128),y[r++]=L&F?P:C,F>>=1}for(;S>r;)y[r++]=0;t.putImageData(p,0,a*h)}}else if(e.kind===R.RGBA_32BPP){for(i=0,s=l*h*4,a=0;f>a;a++)v.set(m.subarray(g,g+s)),g+=s,t.putImageData(p,0,i),i+=h;d>a&&(s=l*A*4,v.set(m.subarray(g,g+s)),t.putImageData(p,0,i))}else if(e.kind===R.RGB_24BPP)for(o=h,s=l*o,a=0;d>a;a++){for(a>=f&&(o=A,s=l*o),r=0,i=s;i--;)v[r++]=m[g++],v[r++]=m[g++],v[r++]=m[g++],v[r++]=255;t.putImageData(p,0,a*h)}else n("bad image kind: "+e.kind)}function o(t,e){for(var n=e.height,r=e.width,a=16,i=n/a,o=Math.floor(i),s=Math.ceil(i),c=n-o*a,l=t.createImageData(r,a),h=0,u=e.data,f=l.data,d=0;s>d;d++){for(var A=o>d?a:c,p=3,g=0;A>g;g++)for(var m=0,v=0;r>v;v++){if(!m){var b=u[h++];m=128}f[p]=b&m?0:255,p+=4,m>>=1}t.putImageData(l,0,d*a)}}function c(t,e){for(var n=["strokeStyle","fillStyle","fillRule","globalAlpha","lineWidth","lineCap","lineJoin","miterLimit","globalCompositeOperation","font"],r=0,a=n.length;a>r;r++){var i=n[r];i in t&&(e[i]=t[i])}"setLineDash"in t?(e.setLineDash(t.getLineDash()),e.lineDashOffset=t.lineDashOffset):"mozDash"in t&&(e.mozDash=t.mozDash,e.mozDashOffset=t.mozDashOffset)}function l(t,e,n,r,a,i){var o;o=i?function(t,e,n,r){for(var a=r.length,i=3;a>i;i+=4){var o=r[i]/255;if(0===o)r[i-3]=t,r[i-2]=e,r[i-1]=n;else if(1>o){var s=1-o;r[i-3]=r[i-3]*o+t*s|0,r[i-2]=r[i-2]*o+e*s|0,r[i-1]=r[i-1]*o+n*s|0}}}.bind(null,i[0],i[1],i[2]):function(){};var s;s="Luminosity"===a?function(t,e){for(var n=t.length,r=3;n>r;r+=4){var a=77*t[r-3]+152*t[r-2]+28*t[r-1]|0;e[r]=e[r]*a>>16}}:function(t,e){for(var n=t.length,r=3;n>r;r+=4){var a=t[r];e[r]=e[r]*a/255|0}};for(var c=65536,l=Math.min(r,Math.ceil(c/n)),h=0;r>h;h+=l){var u=Math.min(l,r-h),f=t.getImageData(0,h,n,u),d=e.getImageData(0,h,n,u);o(f.data),s(f.data,d.data),t.putImageData(d,0,h)}}function h(t,e,n){var r=e.canvas,a=e.context;t.setTransform(e.scaleX,0,0,e.scaleY,e.offsetX,e.offsetY);var i=e.backdrop||null;if(ce.isEnabled){var o=ce.composeSMask(n.canvas,r,{subtype:e.subtype,backdrop:i});return t.setTransform(1,0,0,1,0,0),void t.drawImage(o,e.offsetX,e.offsetY)}l(a,n,r.width,r.height,e.subtype,i),t.drawImage(r,0,0)}var u=15,f=["butt","round","square"],d=["miter","round","bevel"],p={},g={};r.prototype={beginDrawing:function(t,e){var n=this.ctx.canvas.width,r=this.ctx.canvas.height;e?this.ctx.clearRect(0,0,n,r):(this.ctx.mozOpaque=!0,this.ctx.save(),this.ctx.fillStyle="rgb(255, 255, 255)",this.ctx.fillRect(0,0,n,r),this.ctx.restore());var a=t.transform;this.ctx.save(),this.ctx.transform.apply(this.ctx,a),this.baseTransform=this.ctx.mozCurrentTransform.slice(),this.imageLayer&&this.imageLayer.beginLayout()},executeOperatorList:function(t,e,n,r){var a=t.argsArray,i=t.fnArray,o=e||0,s=a.length;if(s==o)return o;for(var c,l=Date.now()+u,h=this.commonObjs,f=this.objs;;){if(r&&o===r.nextBreakPoint)return r.breakIt(o,n),o;if(c=i[o],c!==L.dependency)this[c].apply(this,a[o]);else for(var d=a[o],A=0,p=d.length;p>A;A++){var g=d[A],m="g_"==g.substring(0,2);if(!m&&!f.isResolved(g))return f.get(g,n),o;if(m&&!h.isResolved(g))return h.get(g,n),o}if(o++,o==s)return o;if(n&&Date.now()>l)return n(),o}},endDrawing:function(){this.ctx.restore(),ie.clear(),ce.clear(),this.imageLayer&&this.imageLayer.endLayout()},setLineWidth:function(t){this.current.lineWidth=t,this.ctx.lineWidth=t},setLineCap:function(t){this.ctx.lineCap=f[t]},setLineJoin:function(t){this.ctx.lineJoin=d[t]},setMiterLimit:function(t){this.ctx.miterLimit=t},setDash:function(t,e){var n=this.ctx;"setLineDash"in n?(n.setLineDash(t),n.lineDashOffset=e):(n.mozDash=t,n.mozDashOffset=e)},setRenderingIntent:function(){},setFlatness:function(){},setGState:function(t){for(var n=0,r=t.length;r>n;n++){var a=t[n],i=a[0],o=a[1];switch(i){case"LW":this.setLineWidth(o);break;case"LC":this.setLineCap(o);break;case"LJ":this.setLineJoin(o);break;case"ML":this.setMiterLimit(o);break;case"D":this.setDash(o[0],o[1]);break;case"RI":this.setRenderingIntent(o);break;case"FL":this.setFlatness(o);break;case"Font":this.setFont(o[0],o[1]);break;case"CA":this.current.strokeAlpha=a[1];break;case"ca":this.current.fillAlpha=a[1],this.ctx.globalAlpha=a[1];break;case"BM":if(o&&o.name&&"Normal"!==o.name){var s=o.name.replace(/([A-Z])/g,function(t){return"-"+t.toLowerCase()}).substring(1);this.ctx.globalCompositeOperation=s,this.ctx.globalCompositeOperation!==s&&e('globalCompositeOperation "'+s+'" is not supported')}else this.ctx.globalCompositeOperation="source-over";break;case"SMask":this.current.activeSMask&&this.endSMaskGroup(),this.current.activeSMask=o?this.tempSMask:null,this.current.activeSMask&&this.beginSMaskGroup(),this.tempSMask=null}}},beginSMaskGroup:function(){var t=this.current.activeSMask,e=t.canvas.width,n=t.canvas.height,r="smaskGroupAt"+this.groupLevel,a=ie.getCanvas(r,e,n,!0),i=this.ctx,o=i.mozCurrentTransform;this.ctx.save();var s=a.context;s.scale(1/t.scaleX,1/t.scaleY),s.translate(-t.offsetX,-t.offsetY),s.transform.apply(s,o),c(i,s),this.ctx=s,this.setGState([["BM","Normal"],["ca",1],["CA",1]]),this.groupStack.push(i),this.groupLevel++},endSMaskGroup:function(){var t=this.ctx;this.groupLevel--,this.ctx=this.groupStack.pop(),h(this.ctx,this.current.activeSMask,t),this.ctx.restore()},save:function(){this.ctx.save();var t=this.current;this.stateStack.push(t),this.current=t.clone(),this.current.activeSMask&&(this.current.activeSMask=null)},restore:function(){var t=this.stateStack.pop();t&&(this.current.activeSMask&&this.endSMaskGroup(),this.current=t,this.ctx.restore())},transform:function(t,e,n,r,a,i){this.ctx.transform(t,e,n,r,a,i)},constructPath:function(t,e){for(var n=this.ctx,r=this.current,a=r.x,i=r.y,o=0,s=0,c=t.length;c>o;o++)switch(0|t[o]){case L.moveTo:a=e[s++],i=e[s++],n.moveTo(a,i);break;case L.lineTo:a=e[s++],i=e[s++],n.lineTo(a,i);break;case L.curveTo:a=e[s+4],i=e[s+5],n.bezierCurveTo(e[s],e[s+1],e[s+2],e[s+3],a,i),s+=6;break;case L.curveTo2:n.bezierCurveTo(a,i,e[s],e[s+1],e[s+2],e[s+3]),a=e[s+2],i=e[s+3],s+=4;break;case L.curveTo3:a=e[s+2],i=e[s+3],n.bezierCurveTo(e[s],e[s+1],a,i,a,i),s+=4;break;case L.closePath:n.closePath()}r.setCurrentPoint(a,i)},closePath:function(){this.ctx.closePath()},rectangle:function(t,e,n,r){0===n&&(n=this.getSinglePixelWidth()),0===r&&(r=this.getSinglePixelWidth()),this.ctx.rect(t,e,n,r)},stroke:function(t){t="undefined"!=typeof t?t:!0;var e=this.ctx,n=this.current.strokeColor;0===this.current.lineWidth&&(e.lineWidth=this.getSinglePixelWidth()),e.globalAlpha=this.current.strokeAlpha,n&&n.hasOwnProperty("type")&&"Pattern"===n.type?(e.save(),e.strokeStyle=n.getPattern(e,this),e.stroke(),e.restore()):e.stroke(),t&&this.consumePath(),e.globalAlpha=this.current.fillAlpha},closeStroke:function(){this.closePath(),this.stroke()},fill:function(t){t="undefined"!=typeof t?t:!0;var e=this.ctx,n=this.current.fillColor,r=!1;if(n&&n.hasOwnProperty("type")&&"Pattern"===n.type&&(e.save(),e.fillStyle=n.getPattern(e,this),r=!0),this.pendingEOFill){if(void 0!==e.mozFillRule)e.mozFillRule="evenodd",e.fill(),e.mozFillRule="nonzero";else try{e.fill("evenodd")}catch(a){e.fill()}this.pendingEOFill=!1}else e.fill();r&&e.restore(),t&&this.consumePath()},eoFill:function(){this.pendingEOFill=!0,this.fill()},fillStroke:function(){this.fill(!1),this.stroke(!1),this.consumePath()},eoFillStroke:function(){this.pendingEOFill=!0,this.fillStroke()},closeFillStroke:function(){this.closePath(),this.fillStroke()},closeEOFillStroke:function(){this.pendingEOFill=!0,this.closePath(),this.fillStroke()},endPath:function(){this.consumePath()},clip:function(){this.pendingClip=p},eoClip:function(){this.pendingClip=g},beginText:function(){this.current.textMatrix=j,this.current.textMatrixScale=1,this.current.x=this.current.lineX=0,this.current.y=this.current.lineY=0},endText:function(){var t=this.pendingTextPaths,e=this.ctx;if(void 0===t)return void e.beginPath();e.save(),e.beginPath();for(var n=0;n<t.length;n++){var r=t[n];e.setTransform.apply(e,r.transform),e.translate(r.x,r.y),r.addToPath(e,r.fontSize)}e.restore(),e.clip(),e.beginPath(),delete this.pendingTextPaths},setCharSpacing:function(t){this.current.charSpacing=t},setWordSpacing:function(t){this.current.wordSpacing=t},setHScale:function(t){this.current.textHScale=t/100},setLeading:function(t){this.current.leading=-t},setFont:function(t,r){var a=this.commonObjs.get(t),i=this.current;if(a||n("Can't find font for "+t),i.fontMatrix=a.fontMatrix?a.fontMatrix:w,(0===i.fontMatrix[0]||0===i.fontMatrix[3])&&e("Invalid font matrix for font "+t),0>r?(r=-r,i.fontDirection=-1):i.fontDirection=1,this.current.font=a,this.current.fontSize=r,!a.isType3Font){var o=a.loadedName||"sans-serif",s=a.black?a.bold?"bolder":"bold":a.bold?"bold":"normal",c=a.italic?"italic":"normal",l='"'+o+'", '+a.fallbackName,h=r>=ne?r:ne;this.current.fontSizeScale=h!=ne?1:r/ne;var u=c+" "+s+" "+h+"px "+l;this.ctx.font=u}},setTextRenderingMode:function(t){this.current.textRenderingMode=t},setTextRise:function(t){this.current.textRise=t},moveText:function(t,e){this.current.x=this.current.lineX+=t,this.current.y=this.current.lineY+=e},setLeadingMoveText:function(t,e){this.setLeading(-e),this.moveText(t,e)},setTextMatrix:function(t,e,n,r,a,i){this.current.textMatrix=[t,e,n,r,a,i],this.current.textMatrixScale=Math.sqrt(t*t+e*e),this.current.x=this.current.lineX=0,this.current.y=this.current.lineY=0},nextLine:function(){this.moveText(0,this.current.leading)},paintChar:function(t,e,n){var r,a=this.ctx,i=this.current,o=i.font,s=i.textRenderingMode,c=i.fontSize/i.fontSizeScale,l=s&F.FILL_STROKE_MASK,h=!!(s&F.ADD_TO_PATH_FLAG);if((o.disableFontFace||h)&&(r=o.getPathGenerator(this.commonObjs,t)),o.disableFontFace?(a.save(),a.translate(e,n),a.beginPath(),r(a,c),(l===F.FILL||l===F.FILL_STROKE)&&a.fill(),(l===F.STROKE||l===F.FILL_STROKE)&&a.stroke(),a.restore()):((l===F.FILL||l===F.FILL_STROKE)&&a.fillText(t,e,n),(l===F.STROKE||l===F.FILL_STROKE)&&a.strokeText(t,e,n)),h){var u=this.pendingTextPaths||(this.pendingTextPaths=[]);u.push({transform:a.mozCurrentTransform,x:e,y:n,fontSize:c,addToPath:r})}},get isFontSubpixelAAEnabled(){var t=document.createElement("canvas").getContext("2d");t.scale(1.5,1),t.fillText("I",0,10);for(var e=t.getImageData(0,0,10,10).data,n=!1,r=3;r<e.length;r+=4)if(e[r]>0&&e[r]<255){n=!0;break}return s(this,"isFontSubpixelAAEnabled",n)},showText:function(t){var e=this.current,n=e.font;if(n.isType3Font)return this.showType3Text(t);var r=e.fontSize;if(0!==r){var a=this.ctx,i=e.fontSizeScale,o=e.charSpacing,s=e.wordSpacing,c=e.fontDirection,l=e.textHScale*c,h=t.length,u=n.vertical,f=n.defaultVMetrics,d=r*e.fontMatrix[0],p=e.textRenderingMode===F.FILL&&!n.disableFontFace;a.save(),a.transform.apply(a,e.textMatrix),a.translate(e.x,e.y+e.textRise),c>0?a.scale(l,-1):a.scale(l,1);var g=e.lineWidth,m=e.textMatrixScale;0===m||0===g?g=this.getSinglePixelWidth():g/=m,1!=i&&(a.scale(i,i),g/=i),a.lineWidth=g;var v,b=0;for(v=0;h>v;++v){var y=t[v];if(null!==y)if(A(y))b+=-y*r*.001;else{var S,x,P,C,k=!1,D=y.fontChar,T=y.accent,w=y.width;if(u){var R,L,_;R=y.vmetric||f,L=y.vmetric?R[1]:.5*w,L=-L*d,_=R[2]*d,w=R?-R[0]:w,S=L/i,x=(b+_)/i}else S=b/i,x=0;if(n.remeasure&&w>0&&this.isFontSubpixelAAEnabled){var E=1e3*a.measureText(D).width/r*i,I=w/E;k=!0,a.save(),a.scale(I,1),S/=I}p&&!T?a.fillText(D,S,x):(this.paintChar(D,S,x),T&&(P=S+T.offset.x/i,C=x-T.offset.y/i,this.paintChar(T.fontChar,P,C)));var M=w*d+o*c;b+=M,k&&a.restore()}else b+=c*s}u?e.y-=b*l:e.x+=b*l,a.restore()}},showType3Text:function(t){var e,n,r,a=this.ctx,i=this.current,o=i.font,s=i.fontSize,c=i.fontDirection,l=i.charSpacing,h=i.wordSpacing,u=i.textHScale*c,f=i.fontMatrix||w,d=t.length;if(0!==s){for(a.save(),a.transform.apply(a,i.textMatrix),a.translate(i.x,i.y),a.scale(u,1),e=0;d>e;++e)if(n=t[e],null!==n)if(A(n)){var p=.001*-n*s;this.ctx.translate(p,0),i.x+=p*u}else{this.processingType3=n,this.save(),a.scale(s,s),a.transform.apply(a,f);var g=o.charProcOperatorList[n.operatorListId];this.executeOperatorList(g),this.restore();var m=J.applyTransform([n.width,0],f);r=(m[0]*s+l)*c,a.translate(r,0),i.x+=r*u}else this.ctx.translate(h,0),i.x+=h*u;a.restore(),this.processingType3=null}},setCharWidth:function(){},setCharWidthAndBounds:function(t,e,n,r,a,i){this.rectangle(n,r,a-n,i-r),this.clip(),this.endPath()},getColorN_Pattern:function(t){var e;if("TilingPattern"==t[0]){var n=t[1];e=new ue(t,n,this.ctx,this.objs,this.commonObjs,this.baseTransform)}else e=k(t);return e},setStrokeColorN:function(){this.current.strokeColor=this.getColorN_Pattern(arguments)},setFillColorN:function(){this.current.fillColor=this.getColorN_Pattern(arguments)},setStrokeRGBColor:function(){var t=J.makeCssRgb(arguments);this.ctx.strokeStyle=t,this.current.strokeColor=t},setFillRGBColor:function(){var t=J.makeCssRgb(arguments);this.ctx.fillStyle=t,this.current.fillColor=t},shadingFill:function(t){var e=this.ctx;this.save();var n=k(t);e.fillStyle=n.getPattern(e,this,!0);var r=e.mozCurrentTransformInverse;if(r){var a=e.canvas,i=a.width,o=a.height,s=J.applyTransform([0,0],r),c=J.applyTransform([0,o],r),l=J.applyTransform([i,0],r),h=J.applyTransform([i,o],r),u=Math.min(s[0],c[0],l[0],h[0]),f=Math.min(s[1],c[1],l[1],h[1]),d=Math.max(s[0],c[0],l[0],h[0]),A=Math.max(s[1],c[1],l[1],h[1]);this.ctx.fillRect(u,f,d-u,A-f)}else this.ctx.fillRect(-1e10,-1e10,2e10,2e10);this.restore()},beginInlineImage:function(){n("Should not call beginInlineImage")},beginImageData:function(){n("Should not call beginImageData")},paintFormXObjectBegin:function(t,e){if(this.save(),this.baseTransformStack.push(this.baseTransform),t&&m(t)&&6==t.length&&this.transform.apply(this,t),this.baseTransform=this.ctx.mozCurrentTransform,e&&m(e)&&4==e.length){var n=e[2]-e[0],r=e[3]-e[1];this.rectangle(e[0],e[1],n,r),this.clip(),this.endPath()}},paintFormXObjectEnd:function(){this.restore(),this.baseTransform=this.baseTransformStack.pop()},beginGroup:function(n){this.save();var r=this.ctx;n.isolated||t("TODO: Support non-isolated groups."),n.knockout&&e("Knockout groups not supported.");var i=r.mozCurrentTransform;n.matrix&&r.transform.apply(r,n.matrix),a(n.bbox,"Bounding box is required.");var o=J.getAxialAlignedBoundingBox(n.bbox,r.mozCurrentTransform),s=[0,0,r.canvas.width,r.canvas.height];o=J.intersect(o,s)||[0,0,0,0];var l=Math.floor(o[0]),h=Math.floor(o[1]),u=Math.max(Math.ceil(o[2])-l,1),f=Math.max(Math.ceil(o[3])-h,1),d=1,A=1;u>re&&(d=u/re,u=re),f>re&&(A=f/re,f=re);var p="groupAt"+this.groupLevel;n.smask&&(p+="_smask_"+this.smaskCounter++%2);var g=ie.getCanvas(p,u,f,!0),m=g.context;m.scale(1/d,1/A),m.translate(-l,-h),m.transform.apply(m,i),n.smask?this.smaskStack.push({canvas:g.canvas,context:m,offsetX:l,offsetY:h,scaleX:d,scaleY:A,subtype:n.smask.subtype,backdrop:n.smask.backdrop}):(r.setTransform(1,0,0,1,0,0),r.translate(l,h),r.scale(d,A)),c(r,m),this.ctx=m,this.setGState([["BM","Normal"],["ca",1],["CA",1]]),this.groupStack.push(r),this.groupLevel++},endGroup:function(t){this.groupLevel--;var e=this.ctx;this.ctx=this.groupStack.pop(),void 0!==this.ctx.imageSmoothingEnabled?this.ctx.imageSmoothingEnabled=!1:this.ctx.mozImageSmoothingEnabled=!1,t.smask?this.tempSMask=this.smaskStack.pop():this.ctx.drawImage(e.canvas,0,0),this.restore()},beginAnnotations:function(){this.save(),this.current=new oe},endAnnotations:function(){this.restore()},beginAnnotation:function(t,e,n){if(this.save(),t&&m(t)&&4==t.length){var r=t[2]-t[0],a=t[3]-t[1];this.rectangle(t[0],t[1],r,a),this.clip(),this.endPath()}this.transform.apply(this,e),this.transform.apply(this,n)},endAnnotation:function(){this.restore()},paintJpegXObject:function(t,n,r){var a=this.objs.get(t);if(!a)return void e("Dependent image isn't ready yet");this.save();var i=this.ctx;if(i.scale(1/n,-1/r),i.drawImage(a,0,0,a.width,a.height,0,-r,n,r),this.imageLayer){var o=i.mozCurrentTransformInverse,s=this.getCanvasPosition(0,0);this.imageLayer.appendImage({objId:t,left:s[0],top:s[1],width:n/o[0],height:r/o[3]})}this.restore()},paintImageMaskXObject:function(t){var e=this.ctx,n=t.width,r=t.height,a=this.processingType3;if(ae&&a&&!("compiled"in a)){var i=1e3;a.compiled=i>=n&&i>=r?C({data:t.data,width:n,height:r}):null}if(a&&a.compiled)return void a.compiled(e);var s=ie.getCanvas("maskCanvas",n,r),c=s.context;c.save(),o(c,t),c.globalCompositeOperation="source-in";var l=this.current.fillColor;c.fillStyle=l&&l.hasOwnProperty("type")&&"Pattern"===l.type?l.getPattern(c,this):l,c.fillRect(0,0,n,r),c.restore(),this.paintInlineImageXObject(s.canvas)},paintImageMaskXObjectRepeat:function(t,e,n,r){var a=t.width,i=t.height,s=this.ctx,c=ie.getCanvas("maskCanvas",a,i),l=c.context;l.save(),o(l,t),l.globalCompositeOperation="source-in";
+var h=this.current.fillColor;l.fillStyle=h&&h.hasOwnProperty("type")&&"Pattern"===h.type?h.getPattern(l,this):h,l.fillRect(0,0,a,i),l.restore();for(var u=0,f=r.length;f>u;u+=2)s.save(),s.transform(e,0,0,n,r[u],r[u+1]),s.scale(1,-1),s.drawImage(c.canvas,0,0,a,i,0,-1,1,1),s.restore()},paintImageMaskXObjectGroup:function(t){for(var e=this.ctx,n=0,r=t.length;r>n;n++){var a=t[n],i=a.width,s=a.height,c=ie.getCanvas("maskCanvas",i,s),l=c.context;l.save(),o(l,a),l.globalCompositeOperation="source-in";var h=this.current.fillColor;l.fillStyle=h&&h.hasOwnProperty("type")&&"Pattern"===h.type?h.getPattern(l,this):h,l.fillRect(0,0,i,s),l.restore(),e.save(),e.transform.apply(e,a.transform),e.scale(1,-1),e.drawImage(c.canvas,0,0,i,s,0,-1,1,1),e.restore()}},paintImageXObject:function(t){var n=this.objs.get(t);return n?void this.paintInlineImageXObject(n):void e("Dependent image isn't ready yet")},paintImageXObjectRepeat:function(t,n,r,a){var i=this.objs.get(t);if(!i)return void e("Dependent image isn't ready yet");for(var o=i.width,s=i.height,c=[],l=0,h=a.length;h>l;l+=2)c.push({transform:[n,0,0,r,a[l],a[l+1]],x:0,y:0,w:o,h:s});this.paintInlineImageXObjectGroup(i,c)},paintInlineImageXObject:function(t){var e=t.width,n=t.height,r=this.ctx;this.save(),r.scale(1/e,-1/n);var a,o,s=r.mozCurrentTransformInverse,c=s[0],l=s[1],h=Math.max(Math.sqrt(c*c+l*l),1),u=s[2],f=s[3],d=Math.max(Math.sqrt(u*u+f*f),1);if(t instanceof HTMLElement||!t.data)a=t;else{o=ie.getCanvas("inlineImage",e,n);var A=o.context;i(A,t),a=o.canvas}for(var p=e,g=n,m="prescale1";h>2&&p>1||d>2&&g>1;){var v=p,b=g;h>2&&p>1&&(v=Math.ceil(p/2),h/=p/v),d>2&&g>1&&(b=Math.ceil(g/2),d/=g/b),o=ie.getCanvas(m,v,b),A=o.context,A.clearRect(0,0,v,b),A.drawImage(a,0,0,p,g,0,0,v,b),a=o.canvas,p=v,g=b,m="prescale1"===m?"prescale2":"prescale1"}if(r.drawImage(a,0,0,p,g,0,-n,e,n),this.imageLayer){var y=this.getCanvasPosition(0,-n);this.imageLayer.appendImage({imgData:t,left:y[0],top:y[1],width:e/s[0],height:n/s[3]})}this.restore()},paintInlineImageXObjectGroup:function(t,e){var n=this.ctx,r=t.width,a=t.height,o=ie.getCanvas("inlineImage",r,a),s=o.context;i(s,t);for(var c=0,l=e.length;l>c;c++){var h=e[c];if(n.save(),n.transform.apply(n,h.transform),n.scale(1,-1),n.drawImage(o.canvas,h.x,h.y,h.w,h.h,0,-1,1,1),this.imageLayer){var u=this.getCanvasPosition(h.x,h.y);this.imageLayer.appendImage({imgData:t,left:u[0],top:u[1],width:r,height:a})}n.restore()}},paintSolidColorImageMask:function(){this.ctx.fillRect(0,0,1,1)},markPoint:function(){},markPointProps:function(){},beginMarkedContent:function(){},beginMarkedContentProps:function(){},endMarkedContent:function(){},beginCompat:function(){},endCompat:function(){},consumePath:function(){var t=this.ctx;if(this.pendingClip){if(this.pendingClip==g)if(void 0!==t.mozFillRule)t.mozFillRule="evenodd",t.clip(),t.mozFillRule="nonzero";else try{t.clip("evenodd")}catch(e){t.clip()}else t.clip();this.pendingClip=null}t.beginPath()},getSinglePixelWidth:function(){var t=this.ctx.mozCurrentTransformInverse;return Math.sqrt(Math.max(t[0]*t[0]+t[1]*t[1],t[2]*t[2]+t[3]*t[3]))},getCanvasPosition:function(t,e){var n=this.ctx.mozCurrentTransform;return[n[0]*t+n[2]*e+n[4],n[1]*t+n[3]*e+n[5]]}};for(var v in L)r.prototype[L[v]]=r.prototype[v];return r}(),ce=function(){function t(t,e,n){var r=t.createShader(n);t.shaderSource(r,e),t.compileShader(r);var a=t.getShaderParameter(r,t.COMPILE_STATUS);if(!a){var i=t.getShaderInfoLog(r);throw new Error("Error during shader compilation: "+i)}return r}function e(e,n){return t(e,n,e.VERTEX_SHADER)}function n(e,n){return t(e,n,e.FRAGMENT_SHADER)}function r(t,e){for(var n=t.createProgram(),r=0,a=e.length;a>r;++r)t.attachShader(n,e[r]);t.linkProgram(n);var i=t.getProgramParameter(n,t.LINK_STATUS);if(!i){var o=t.getProgramInfoLog(n);throw new Error("Error during program linking: "+o)}return n}function a(t,e,n){t.activeTexture(n);var r=t.createTexture();return t.bindTexture(t.TEXTURE_2D,r),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.NEAREST),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MAG_FILTER,t.NEAREST),t.texImage2D(t.TEXTURE_2D,0,t.RGBA,t.RGBA,t.UNSIGNED_BYTE,e),r}function i(){f||(d=document.createElement("canvas"),f=d.getContext("webgl",{premultipliedalpha:!1}))}function o(){var t,a;i(),t=d,d=null,a=f,f=null;var o=e(a,A),s=n(a,p),c=r(a,[o,s]);a.useProgram(c);var l={};l.gl=a,l.canvas=t,l.resolutionLocation=a.getUniformLocation(c,"u_resolution"),l.positionLocation=a.getAttribLocation(c,"a_position"),l.backdropLocation=a.getUniformLocation(c,"u_backdrop"),l.subtypeLocation=a.getUniformLocation(c,"u_subtype");var h=a.getAttribLocation(c,"a_texCoord"),u=a.getUniformLocation(c,"u_image"),m=a.getUniformLocation(c,"u_mask"),v=a.createBuffer();a.bindBuffer(a.ARRAY_BUFFER,v),a.bufferData(a.ARRAY_BUFFER,new Float32Array([0,0,1,0,0,1,0,1,1,0,1,1]),a.STATIC_DRAW),a.enableVertexAttribArray(h),a.vertexAttribPointer(h,2,a.FLOAT,!1,0,0),a.uniform1i(u,0),a.uniform1i(m,1),g=l}function c(t,e,n){var r=t.width,i=t.height;g||o();var s=g,c=s.canvas,l=s.gl;c.width=r,c.height=i,l.viewport(0,0,l.drawingBufferWidth,l.drawingBufferHeight),l.uniform2f(s.resolutionLocation,r,i),n.backdrop?l.uniform4f(s.resolutionLocation,n.backdrop[0],n.backdrop[1],n.backdrop[2],1):l.uniform4f(s.resolutionLocation,0,0,0,0),l.uniform1i(s.subtypeLocation,"Luminosity"===n.subtype?1:0);var h=a(l,t,l.TEXTURE0),u=a(l,e,l.TEXTURE1),f=l.createBuffer();return l.bindBuffer(l.ARRAY_BUFFER,f),l.bufferData(l.ARRAY_BUFFER,new Float32Array([0,0,r,0,0,i,0,i,r,0,r,i]),l.STATIC_DRAW),l.enableVertexAttribArray(s.positionLocation),l.vertexAttribPointer(s.positionLocation,2,l.FLOAT,!1,0,0),l.clearColor(0,0,0,0),l.enable(l.BLEND),l.blendFunc(l.ONE,l.ONE_MINUS_SRC_ALPHA),l.clear(l.COLOR_BUFFER_BIT),l.drawArrays(l.TRIANGLES,0,6),l.flush(),l.deleteTexture(h),l.deleteTexture(u),l.deleteBuffer(f),c}function l(){var t,a;i(),t=d,d=null,a=f,f=null;var o=e(a,m),s=n(a,v),c=r(a,[o,s]);a.useProgram(c);var l={};l.gl=a,l.canvas=t,l.resolutionLocation=a.getUniformLocation(c,"u_resolution"),l.scaleLocation=a.getUniformLocation(c,"u_scale"),l.offsetLocation=a.getUniformLocation(c,"u_offset"),l.positionLocation=a.getAttribLocation(c,"a_position"),l.colorLocation=a.getAttribLocation(c,"a_color"),b=l}function h(t,e,n,r,a){b||l();var i=b,o=i.canvas,s=i.gl;o.width=t,o.height=e,s.viewport(0,0,s.drawingBufferWidth,s.drawingBufferHeight),s.uniform2f(i.resolutionLocation,t,e);var c,h,u,f=0;for(c=0,h=r.length;h>c;c++)switch(r[c].type){case"lattice":u=r[c].coords.length/r[c].verticesPerRow|0,f+=(u-1)*(r[c].verticesPerRow-1)*6;break;case"triangles":f+=r[c].coords.length}var d=new Float32Array(2*f),A=new Uint8Array(3*f),p=a.coords,g=a.colors,m=0,v=0;for(c=0,h=r.length;h>c;c++){var y=r[c],S=y.coords,x=y.colors;switch(y.type){case"lattice":var P=y.verticesPerRow;u=S.length/P|0;for(var C=1;u>C;C++)for(var k=C*P+1,D=1;P>D;D++,k++)d[m]=p[S[k-P-1]],d[m+1]=p[S[k-P-1]+1],d[m+2]=p[S[k-P]],d[m+3]=p[S[k-P]+1],d[m+4]=p[S[k-1]],d[m+5]=p[S[k-1]+1],A[v]=g[x[k-P-1]],A[v+1]=g[x[k-P-1]+1],A[v+2]=g[x[k-P-1]+2],A[v+3]=g[x[k-P]],A[v+4]=g[x[k-P]+1],A[v+5]=g[x[k-P]+2],A[v+6]=g[x[k-1]],A[v+7]=g[x[k-1]+1],A[v+8]=g[x[k-1]+2],d[m+6]=d[m+2],d[m+7]=d[m+3],d[m+8]=d[m+4],d[m+9]=d[m+5],d[m+10]=p[S[k]],d[m+11]=p[S[k]+1],A[v+9]=A[v+3],A[v+10]=A[v+4],A[v+11]=A[v+5],A[v+12]=A[v+6],A[v+13]=A[v+7],A[v+14]=A[v+8],A[v+15]=g[x[k]],A[v+16]=g[x[k]+1],A[v+17]=g[x[k]+2],m+=12,v+=18;break;case"triangles":for(var T=0,w=S.length;w>T;T++)d[m]=p[S[T]],d[m+1]=p[S[T]+1],A[v]=g[x[c]],A[v+1]=g[x[T]+1],A[v+2]=g[x[T]+2],m+=2,v+=3}}n?s.clearColor(n[0]/255,n[1]/255,n[2]/255,1):s.clearColor(0,0,0,0),s.clear(s.COLOR_BUFFER_BIT);var F=s.createBuffer();s.bindBuffer(s.ARRAY_BUFFER,F),s.bufferData(s.ARRAY_BUFFER,d,s.STATIC_DRAW),s.enableVertexAttribArray(i.positionLocation),s.vertexAttribPointer(i.positionLocation,2,s.FLOAT,!1,0,0);var R=s.createBuffer();return s.bindBuffer(s.ARRAY_BUFFER,R),s.bufferData(s.ARRAY_BUFFER,A,s.STATIC_DRAW),s.enableVertexAttribArray(i.colorLocation),s.vertexAttribPointer(i.colorLocation,3,s.UNSIGNED_BYTE,!1,0,0),s.uniform2f(i.scaleLocation,a.scaleX,a.scaleY),s.uniform2f(i.offsetLocation,a.offsetX,a.offsetY),s.drawArrays(s.TRIANGLES,0,f),s.flush(),s.deleteBuffer(F),s.deleteBuffer(R),o}function u(){g=null,b=null}var f,d,A="  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;                                      }                                                             ",p="  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;                                    }                                                             ",g=null,m="  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);                         }                                                             ",v="  precision mediump float;                                                                                                        varying vec4 v_color;                                                                                                           void main() {                                                     gl_FragColor = v_color;                                       }                                                             ",b=null;return{get isEnabled(){if(PDFJS.disableWebGL)return!1;var t=!1;try{i(),t=!!f}catch(e){}return s(this,"isEnabled",t)},composeSMask:c,drawFigures:h,clear:u}}(),le={};le.RadialAxial={fromIR:function(t){var e=t[1],n=t[2],r=t[3],a=t[4],i=t[5],o=t[6];return{type:"Pattern",getPattern:function(t){var s;"axial"===e?s=t.createLinearGradient(r[0],r[1],a[0],a[1]):"radial"===e&&(s=t.createRadialGradient(r[0],r[1],i,a[0],a[1],o));for(var c=0,l=n.length;l>c;++c){var h=n[c];s.addColorStop(h[0],h[1])}return s}}}};var he=function(){function t(t,e,n,r,a,i,o,s){var c,l=e.coords,h=e.colors,u=t.data,f=4*t.width;l[n+1]>l[r+1]&&(c=n,n=r,r=c,c=i,i=o,o=c),l[r+1]>l[a+1]&&(c=r,r=a,a=c,c=o,o=s,s=c),l[n+1]>l[r+1]&&(c=n,n=r,r=c,c=i,i=o,o=c);var d=(l[n]+e.offsetX)*e.scaleX,A=(l[n+1]+e.offsetY)*e.scaleY,p=(l[r]+e.offsetX)*e.scaleX,g=(l[r+1]+e.offsetY)*e.scaleY,m=(l[a]+e.offsetX)*e.scaleX,v=(l[a+1]+e.offsetY)*e.scaleY;if(!(A>=v))for(var b,y,S,x,P,C,k,D,T,w=h[i],F=h[i+1],R=h[i+2],L=h[o],_=h[o+1],E=h[o+2],I=h[s],M=h[s+1],O=h[s+2],j=Math.round(A),J=Math.round(v),B=j;J>=B;B++){g>B?(T=A>B?0:A===g?1:(A-B)/(A-g),b=d-(d-p)*T,y=w-(w-L)*T,S=F-(F-_)*T,x=R-(R-E)*T):(T=B>v?1:g===v?0:(g-B)/(g-v),b=p-(p-m)*T,y=L-(L-I)*T,S=_-(_-M)*T,x=E-(E-O)*T),T=A>B?0:B>v?1:(A-B)/(A-v),P=d-(d-m)*T,C=w-(w-I)*T,k=F-(F-M)*T,D=R-(R-O)*T;for(var W=Math.round(Math.min(b,P)),U=Math.round(Math.max(b,P)),N=f*B+4*W,G=W;U>=G;G++)T=(b-G)/(b-P),T=0>T?0:T>1?1:T,u[N++]=y-(y-C)*T|0,u[N++]=S-(S-k)*T|0,u[N++]=x-(x-D)*T|0,u[N++]=255}}function e(e,r,a){var i,o,s=r.coords,c=r.colors;switch(r.type){case"lattice":var l=r.verticesPerRow,h=Math.floor(s.length/l)-1,u=l-1;for(i=0;h>i;i++)for(var f=i*l,d=0;u>d;d++,f++)t(e,a,s[f],s[f+1],s[f+l],c[f],c[f+1],c[f+l]),t(e,a,s[f+l+1],s[f+1],s[f+l],c[f+l+1],c[f+1],c[f+l]);break;case"triangles":for(i=0,o=s.length;o>i;i+=3)t(e,a,s[i],s[i+1],s[i+2],c[i],c[i+1],c[i+2]);break;default:n("illigal figure")}}function r(t,n,r,a,i,o){var s,c,l,h,u=1.1,f=3e3,d=Math.floor(t[0]),A=Math.floor(t[1]),p=Math.ceil(t[2])-d,g=Math.ceil(t[3])-A,m=Math.min(Math.ceil(Math.abs(p*n[0]*u)),f),v=Math.min(Math.ceil(Math.abs(g*n[1]*u)),f),b=p/m,y=g/v,S={coords:r,colors:a,offsetX:-d,offsetY:-A,scaleX:1/b,scaleY:1/y};if(ce.isEnabled)s=ce.drawFigures(m,v,o,i,S),c=ie.getCanvas("mesh",m,v,!1),c.context.drawImage(s,0,0),s=c.canvas;else{c=ie.getCanvas("mesh",m,v,!1);var x=c.context,P=x.createImageData(m,v);if(o){var C=P.data;for(l=0,h=C.length;h>l;l+=4)C[l]=o[0],C[l+1]=o[1],C[l+2]=o[2],C[l+3]=255}for(l=0;l<i.length;l++)e(P,i[l],S);x.putImageData(P,0,0),s=c.canvas}return{canvas:s,offsetX:d,offsetY:A,scaleX:b,scaleY:y}}return r}();le.Mesh={fromIR:function(t){var e=t[2],n=t[3],r=t[4],a=t[5],i=t[6],o=t[8];return{type:"Pattern",getPattern:function(t,s,c){var l;if(c)l=J.singularValueDecompose2dScale(t.mozCurrentTransform);else{var h=J.singularValueDecompose2dScale(i),u=J.singularValueDecompose2dScale(s.baseTransform);l=[h[0]*u[0],h[1]*u[1]]}var f=he(a,l,e,n,r,c?null:o);return c||(t.setTransform.apply(t,s.baseTransform),i&&t.transform.apply(t,i)),t.translate(f.offsetX,f.offsetY),t.scale(f.scaleX,f.scaleY),t.createPattern(f.canvas,"no-repeat")}}}},le.Dummy={fromIR:function(){return{type:"Pattern",getPattern:function(){return"hotpink"}}}};var ue=function(){function e(t,e,n,r,a,i){this.operatorList=t[2],this.matrix=t[3]||[1,0,0,1,0,0],this.bbox=t[4],this.xstep=t[5],this.ystep=t[6],this.paintType=t[7],this.tilingType=t[8],this.color=e,this.objs=r,this.commonObjs=a,this.baseTransform=i,this.type="Pattern",this.ctx=n}var r={COLORED:1,UNCOLORED:2},a=3e3;return e.prototype={createPatternCanvas:function(e){var n=this.operatorList,r=this.bbox,i=this.xstep,o=this.ystep,s=this.paintType,c=this.tilingType,l=this.color,h=this.objs,u=this.commonObjs;t("TilingType: "+c);var f=r[0],d=r[1],A=r[2],p=r[3],g=[f,d],m=[f+i,d+o],v=m[0]-g[0],b=m[1]-g[1],y=J.singularValueDecompose2dScale(this.matrix),S=J.singularValueDecompose2dScale(this.baseTransform),x=[y[0]*S[0],y[1]*S[1]];v=Math.min(Math.ceil(Math.abs(v*x[0])),a),b=Math.min(Math.ceil(Math.abs(b*x[1])),a);var P=ie.getCanvas("pattern",v,b,!0),C=P.context,k=new se(C,u,h);k.groupLevel=e.groupLevel,this.setFillAndStrokeStyleToContext(C,s,l),this.setScale(v,b,i,o),this.transformToScale(k);var 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