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+/* Copyright 2012 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* jshint globalstrict: false */
+/* umdutils ignore */
+
+(function (root, factory) {
+ 'use strict';
+ if (typeof define === 'function' && define.amd) {
+define('pdfjs-dist/build/pdf', ['exports'], factory);
+ } else if (typeof exports !== 'undefined') {
+ factory(exports);
+ } else {
+factory((root.pdfjsDistBuildPdf = {}));
+ }
+}(this, function (exports) {
+ // Use strict in our context only - users might not want it
+ 'use strict';
+
+var pdfjsVersion = '1.4.20';
+var pdfjsBuild = 'b15f335';
+
+ var pdfjsFilePath =
+ typeof document !== 'undefined' && document.currentScript ?
+ document.currentScript.src : null;
+
+ var pdfjsLibs = {};
+
+ (function pdfjsWrapper() {
+
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsSharedGlobal = {}));
+ }
+}(this, function (exports) {
+
+ var globalScope = (typeof window !== 'undefined') ? window :
+ (typeof global !== 'undefined') ? global :
+ (typeof self !== 'undefined') ? self : this;
+
+ var isWorker = (typeof window === 'undefined');
+
+ // 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 = {};
+ }
+
+ if (typeof pdfjsVersion !== 'undefined') {
+ globalScope.PDFJS.version = pdfjsVersion;
+ }
+ if (typeof pdfjsVersion !== 'undefined') {
+ globalScope.PDFJS.build = pdfjsBuild;
+ }
+
+ globalScope.PDFJS.pdfBug = false;
+
+ exports.globalScope = globalScope;
+ exports.isWorker = isWorker;
+ exports.PDFJS = globalScope.PDFJS;
+}));
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsDisplayDOMUtils = {}), root.pdfjsSharedGlobal);
+ }
+}(this, function (exports, sharedGlobal) {
+
+var PDFJS = sharedGlobal.PDFJS;
+
+/**
+ * Optimised CSS custom property getter/setter.
+ * @class
+ */
+var CustomStyle = (function CustomStyleClosure() {
+
+ // As noted on: http://www.zachstronaut.com/posts/2009/02/17/
+ // animate-css-transforms-firefox-webkit.html
+ // in some versions of IE9 it is critical that ms appear in this list
+ // before Moz
+ var prefixes = ['ms', 'Moz', 'Webkit', 'O'];
+ var _cache = {};
+
+ function CustomStyle() {}
+
+ CustomStyle.getProp = function get(propName, element) {
+ // check cache only when no element is given
+ if (arguments.length === 1 && typeof _cache[propName] === 'string') {
+ return _cache[propName];
+ }
+
+ element = element || document.documentElement;
+ var style = element.style, prefixed, uPropName;
+
+ // test standard property first
+ if (typeof style[propName] === 'string') {
+ return (_cache[propName] = propName);
+ }
+
+ // capitalize
+ uPropName = propName.charAt(0).toUpperCase() + propName.slice(1);
+
+ // test vendor specific properties
+ for (var i = 0, l = prefixes.length; i < l; i++) {
+ prefixed = prefixes[i] + uPropName;
+ if (typeof style[prefixed] === 'string') {
+ return (_cache[propName] = prefixed);
+ }
+ }
+
+ //if all fails then set to undefined
+ return (_cache[propName] = 'undefined');
+ };
+
+ CustomStyle.setProp = function set(propName, element, str) {
+ var prop = this.getProp(propName);
+ if (prop !== 'undefined') {
+ element.style[prop] = str;
+ }
+ };
+
+ return CustomStyle;
+})();
+
+PDFJS.CustomStyle = CustomStyle;
+
+exports.CustomStyle = CustomStyle;
+}));
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsSharedUtil = {}), root.pdfjsSharedGlobal);
+ }
+}(this, function (exports, sharedGlobal) {
+
+var PDFJS = sharedGlobal.PDFJS;
+var globalScope = sharedGlobal.globalScope;
+
+var FONT_IDENTITY_MATRIX = [0.001, 0, 0, 0.001, 0, 0];
+
+var TextRenderingMode = {
+ FILL: 0,
+ STROKE: 1,
+ FILL_STROKE: 2,
+ INVISIBLE: 3,
+ FILL_ADD_TO_PATH: 4,
+ STROKE_ADD_TO_PATH: 5,
+ FILL_STROKE_ADD_TO_PATH: 6,
+ ADD_TO_PATH: 7,
+ FILL_STROKE_MASK: 3,
+ ADD_TO_PATH_FLAG: 4
+};
+
+var ImageKind = {
+ GRAYSCALE_1BPP: 1,
+ RGB_24BPP: 2,
+ RGBA_32BPP: 3
+};
+
+var AnnotationType = {
+ TEXT: 1,
+ LINK: 2,
+ FREETEXT: 3,
+ LINE: 4,
+ SQUARE: 5,
+ CIRCLE: 6,
+ POLYGON: 7,
+ POLYLINE: 8,
+ HIGHLIGHT: 9,
+ UNDERLINE: 10,
+ SQUIGGLY: 11,
+ STRIKEOUT: 12,
+ STAMP: 13,
+ CARET: 14,
+ INK: 15,
+ POPUP: 16,
+ FILEATTACHMENT: 17,
+ SOUND: 18,
+ MOVIE: 19,
+ WIDGET: 20,
+ SCREEN: 21,
+ PRINTERMARK: 22,
+ TRAPNET: 23,
+ WATERMARK: 24,
+ THREED: 25,
+ REDACT: 26
+};
+
+var AnnotationFlag = {
+ INVISIBLE: 0x01,
+ HIDDEN: 0x02,
+ PRINT: 0x04,
+ NOZOOM: 0x08,
+ NOROTATE: 0x10,
+ NOVIEW: 0x20,
+ READONLY: 0x40,
+ LOCKED: 0x80,
+ TOGGLENOVIEW: 0x100,
+ LOCKEDCONTENTS: 0x200
+};
+
+var AnnotationBorderStyleType = {
+ SOLID: 1,
+ DASHED: 2,
+ BEVELED: 3,
+ INSET: 4,
+ UNDERLINE: 5
+};
+
+var StreamType = {
+ UNKNOWN: 0,
+ FLATE: 1,
+ LZW: 2,
+ DCT: 3,
+ JPX: 4,
+ JBIG: 5,
+ A85: 6,
+ AHX: 7,
+ CCF: 8,
+ RL: 9
+};
+
+var FontType = {
+ UNKNOWN: 0,
+ TYPE1: 1,
+ TYPE1C: 2,
+ CIDFONTTYPE0: 3,
+ CIDFONTTYPE0C: 4,
+ TRUETYPE: 5,
+ CIDFONTTYPE2: 6,
+ TYPE3: 7,
+ OPENTYPE: 8,
+ TYPE0: 9,
+ MMTYPE1: 10
+};
+
+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);
+ }
+}
+
+// Deprecated API function -- treated as warnings.
+function deprecated(details) {
+ warn('Deprecated API usage: ' + details);
+}
+
+// Fatal errors that should trigger the fallback UI and halt execution by
+// throwing an exception.
+function error(msg) {
+ if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.errors) {
+ console.log('Error: ' + msg);
+ console.log(backtrace());
+ }
+ throw new Error(msg);
+}
+
+function backtrace() {
+ try {
+ throw new Error();
+ } catch (e) {
+ return e.stack ? e.stack.split('\n').slice(2).join('\n') : '';
+ }
+}
+
+function assert(cond, msg) {
+ if (!cond) {
+ error(msg);
+ }
+}
+
+var UNSUPPORTED_FEATURES = PDFJS.UNSUPPORTED_FEATURES = {
+ unknown: 'unknown',
+ forms: 'forms',
+ javaScript: 'javaScript',
+ smask: 'smask',
+ shadingPattern: 'shadingPattern',
+ font: 'font'
+};
+
+// 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;
+ }
+ return new URL(url, baseUrl).href;
+}
+
+// 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':
+ case 'tel':
+ return true;
+ default:
+ return false;
+ }
+}
+PDFJS.isValidUrl = isValidUrl;
+
+/**
+ * Adds various attributes (href, title, target, rel) to hyperlinks.
+ * @param {HTMLLinkElement} link - The link element.
+ * @param {Object} params - An object with the properties:
+ * @param {string} params.url - An absolute URL.
+ */
+function addLinkAttributes(link, params) {
+ var url = params && params.url;
+ link.href = link.title = (url ? removeNullCharacters(url) : '');
+
+ if (url) {
+ if (isExternalLinkTargetSet()) {
+ link.target = LinkTargetStringMap[PDFJS.externalLinkTarget];
+ }
+ // Strip referrer from the URL.
+ link.rel = PDFJS.externalLinkRel;
+ }
+}
+PDFJS.addLinkAttributes = addLinkAttributes;
+
+function shadow(obj, prop, value) {
+ Object.defineProperty(obj, prop, { value: value,
+ enumerable: true,
+ configurable: true,
+ writable: false });
+ return value;
+}
+PDFJS.shadow = shadow;
+
+var LinkTarget = PDFJS.LinkTarget = {
+ NONE: 0, // Default value.
+ SELF: 1,
+ BLANK: 2,
+ PARENT: 3,
+ TOP: 4,
+};
+var LinkTargetStringMap = [
+ '',
+ '_self',
+ '_blank',
+ '_parent',
+ '_top'
+];
+
+function isExternalLinkTargetSet() {
+ if (PDFJS.openExternalLinksInNewWindow) {
+ deprecated('PDFJS.openExternalLinksInNewWindow, please use ' +
+ '"PDFJS.externalLinkTarget = PDFJS.LinkTarget.BLANK" instead.');
+ if (PDFJS.externalLinkTarget === LinkTarget.NONE) {
+ PDFJS.externalLinkTarget = LinkTarget.BLANK;
+ }
+ // Reset the deprecated parameter, to suppress further warnings.
+ PDFJS.openExternalLinksInNewWindow = false;
+ }
+ switch (PDFJS.externalLinkTarget) {
+ case LinkTarget.NONE:
+ return false;
+ case LinkTarget.SELF:
+ case LinkTarget.BLANK:
+ case LinkTarget.PARENT:
+ case LinkTarget.TOP:
+ return true;
+ }
+ warn('PDFJS.externalLinkTarget is invalid: ' + PDFJS.externalLinkTarget);
+ // Reset the external link target, to suppress further warnings.
+ PDFJS.externalLinkTarget = LinkTarget.NONE;
+ return false;
+}
+PDFJS.isExternalLinkTargetSet = isExternalLinkTargetSet;
+
+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;
+})();
+PDFJS.PasswordException = 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;
+})();
+PDFJS.UnknownErrorException = UnknownErrorException;
+
+var InvalidPDFException = (function InvalidPDFExceptionClosure() {
+ function InvalidPDFException(msg) {
+ this.name = 'InvalidPDFException';
+ this.message = msg;
+ }
+
+ InvalidPDFException.prototype = new Error();
+ InvalidPDFException.constructor = InvalidPDFException;
+
+ return InvalidPDFException;
+})();
+PDFJS.InvalidPDFException = InvalidPDFException;
+
+var MissingPDFException = (function MissingPDFExceptionClosure() {
+ function MissingPDFException(msg) {
+ this.name = 'MissingPDFException';
+ this.message = msg;
+ }
+
+ MissingPDFException.prototype = new Error();
+ MissingPDFException.constructor = MissingPDFException;
+
+ return MissingPDFException;
+})();
+PDFJS.MissingPDFException = MissingPDFException;
+
+var UnexpectedResponseException =
+ (function UnexpectedResponseExceptionClosure() {
+ function UnexpectedResponseException(msg, status) {
+ this.name = 'UnexpectedResponseException';
+ this.message = msg;
+ this.status = status;
+ }
+
+ UnexpectedResponseException.prototype = new Error();
+ UnexpectedResponseException.constructor = UnexpectedResponseException;
+
+ return UnexpectedResponseException;
+})();
+PDFJS.UnexpectedResponseException = UnexpectedResponseException;
+
+var NotImplementedException = (function NotImplementedExceptionClosure() {
+ function NotImplementedException(msg) {
+ this.message = msg;
+ }
+
+ NotImplementedException.prototype = new Error();
+ NotImplementedException.prototype.name = 'NotImplementedException';
+ NotImplementedException.constructor = NotImplementedException;
+
+ return NotImplementedException;
+})();
+
+var MissingDataException = (function MissingDataExceptionClosure() {
+ function MissingDataException(begin, end) {
+ this.begin = begin;
+ this.end = end;
+ this.message = 'Missing data [' + begin + ', ' + end + ')';
+ }
+
+ MissingDataException.prototype = new Error();
+ MissingDataException.prototype.name = 'MissingDataException';
+ MissingDataException.constructor = MissingDataException;
+
+ return MissingDataException;
+})();
+
+var XRefParseException = (function XRefParseExceptionClosure() {
+ function XRefParseException(msg) {
+ this.message = msg;
+ }
+
+ XRefParseException.prototype = new Error();
+ XRefParseException.prototype.name = 'XRefParseException';
+ XRefParseException.constructor = XRefParseException;
+
+ return XRefParseException;
+})();
+
+var NullCharactersRegExp = /\x00/g;
+
+function removeNullCharacters(str) {
+ if (typeof str !== 'string') {
+ warn('The argument for removeNullCharacters must be a string.');
+ return str;
+ }
+ return str.replace(NullCharactersRegExp, '');
+}
+PDFJS.removeNullCharacters = removeNullCharacters;
+
+function bytesToString(bytes) {
+ assert(bytes !== null && typeof bytes === 'object' &&
+ bytes.length !== undefined, 'Invalid argument for bytesToString');
+ var length = bytes.length;
+ var MAX_ARGUMENT_COUNT = 8192;
+ if (length < MAX_ARGUMENT_COUNT) {
+ return String.fromCharCode.apply(null, bytes);
+ }
+ var strBuf = [];
+ for (var i = 0; i < length; i += MAX_ARGUMENT_COUNT) {
+ var chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length);
+ var chunk = bytes.subarray(i, chunkEnd);
+ strBuf.push(String.fromCharCode.apply(null, chunk));
+ }
+ return strBuf.join('');
+}
+
+function stringToBytes(str) {
+ assert(typeof str === 'string', 'Invalid argument for stringToBytes');
+ var length = str.length;
+ var bytes = new Uint8Array(length);
+ for (var i = 0; i < length; ++i) {
+ bytes[i] = str.charCodeAt(i) & 0xFF;
+ }
+ return bytes;
+}
+
+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 userAgent 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;
+})();
+
+exports.Uint32ArrayView = Uint32ArrayView;
+
+var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
+
+var Util = PDFJS.Util = (function UtilClosure() {
+ function Util() {}
+
+ var rgbBuf = ['rgb(', 0, ',', 0, ',', 0, ')'];
+
+ // makeCssRgb() can be called thousands of times. Using |rgbBuf| avoids
+ // creating many intermediate strings.
+ Util.makeCssRgb = function Util_makeCssRgb(r, g, b) {
+ rgbBuf[1] = r;
+ rgbBuf[3] = g;
+ rgbBuf[5] = b;
+ return rgbBuf.join('');
+ };
+
+ // Concatenates two transformation matrices together and returns the result.
+ Util.transform = function Util_transform(m1, m2) {
+ return [
+ m1[0] * m2[0] + m1[2] * m2[1],
+ m1[1] * m2[0] + m1[3] * m2[1],
+ m1[0] * m2[2] + m1[2] * m2[3],
+ m1[1] * m2[2] + m1[3] * m2[3],
+ m1[0] * m2[4] + m1[2] * m2[5] + m1[4],
+ m1[1] * m2[4] + m1[3] * m2[5] + m1[5]
+ ];
+ };
+
+ // For 2d affine transforms
+ Util.applyTransform = function Util_applyTransform(p, m) {
+ var xt = p[0] * m[0] + p[1] * m[2] + m[4];
+ var yt = p[0] * m[1] + p[1] * m[3] + m[5];
+ return [xt, yt];
+ };
+
+ Util.applyInverseTransform = function Util_applyInverseTransform(p, m) {
+ var d = m[0] * m[3] - m[1] * m[2];
+ var xt = (p[0] * m[3] - p[1] * m[2] + m[2] * m[5] - m[4] * m[3]) / d;
+ var yt = (-p[0] * m[1] + p[1] * m[0] + m[4] * m[1] - m[5] * m[0]) / d;
+ return [xt, yt];
+ };
+
+ // Applies the transform to the rectangle and finds the minimum axially
+ // aligned bounding box.
+ Util.getAxialAlignedBoundingBox =
+ function Util_getAxialAlignedBoundingBox(r, m) {
+
+ var p1 = Util.applyTransform(r, m);
+ var p2 = Util.applyTransform(r.slice(2, 4), m);
+ var p3 = Util.applyTransform([r[0], r[3]], m);
+ var p4 = Util.applyTransform([r[2], r[1]], m);
+ return [
+ Math.min(p1[0], p2[0], p3[0], p4[0]),
+ Math.min(p1[1], p2[1], p3[1], p4[1]),
+ Math.max(p1[0], p2[0], p3[0], p4[0]),
+ Math.max(p1[1], p2[1], p3[1], p4[1])
+ ];
+ };
+
+ Util.inverseTransform = function Util_inverseTransform(m) {
+ var d = m[0] * m[3] - m[1] * m[2];
+ return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d,
+ (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d];
+ };
+
+ // Apply a generic 3d matrix M on a 3-vector v:
+ // | a b c | | X |
+ // | d e f | x | Y |
+ // | g h i | | Z |
+ // M is assumed to be serialized as [a,b,c,d,e,f,g,h,i],
+ // with v as [X,Y,Z]
+ Util.apply3dTransform = function Util_apply3dTransform(m, v) {
+ return [
+ m[0] * v[0] + m[1] * v[1] + m[2] * v[2],
+ m[3] * v[0] + m[4] * v[1] + m[5] * v[2],
+ m[6] * v[0] + m[7] * v[1] + m[8] * v[2]
+ ];
+ };
+
+ // This calculation uses Singular Value Decomposition.
+ // The SVD can be represented with formula A = USV. We are interested in the
+ // matrix S here because it represents the scale values.
+ Util.singularValueDecompose2dScale =
+ function Util_singularValueDecompose2dScale(m) {
+
+ var transpose = [m[0], m[2], m[1], m[3]];
+
+ // Multiply matrix m with its transpose.
+ var a = m[0] * transpose[0] + m[1] * transpose[2];
+ var b = m[0] * transpose[1] + m[1] * transpose[3];
+ var c = m[2] * transpose[0] + m[3] * transpose[2];
+ var d = m[2] * transpose[1] + m[3] * transpose[3];
+
+ // Solve the second degree polynomial to get roots.
+ var first = (a + d) / 2;
+ var second = Math.sqrt((a + d) * (a + d) - 4 * (a * d - c * b)) / 2;
+ var sx = first + second || 1;
+ var sy = first - second || 1;
+
+ // Scale values are the square roots of the eigenvalues.
+ return [Math.sqrt(sx), Math.sqrt(sy)];
+ };
+
+ // Normalize rectangle rect=[x1, y1, x2, y2] so that (x1,y1) < (x2,y2)
+ // For coordinate systems whose origin lies in the bottom-left, this
+ // means normalization to (BL,TR) ordering. For systems with origin in the
+ // top-left, this means (TL,BR) ordering.
+ Util.normalizeRect = function Util_normalizeRect(rect) {
+ var r = rect.slice(0); // clone rect
+ if (rect[0] > rect[2]) {
+ r[0] = rect[2];
+ r[2] = rect[0];
+ }
+ if (rect[1] > rect[3]) {
+ r[1] = rect[3];
+ r[3] = rect[1];
+ }
+ return r;
+ };
+
+ // Returns a rectangle [x1, y1, x2, y2] corresponding to the
+ // intersection of rect1 and rect2. If no intersection, returns 'false'
+ // The rectangle coordinates of rect1, rect2 should be [x1, y1, x2, y2]
+ Util.intersect = function Util_intersect(rect1, rect2) {
+ function compare(a, b) {
+ return a - b;
+ }
+
+ // Order points along the axes
+ var orderedX = [rect1[0], rect1[2], rect2[0], rect2[2]].sort(compare),
+ orderedY = [rect1[1], rect1[3], rect2[1], rect2[3]].sort(compare),
+ result = [];
+
+ rect1 = Util.normalizeRect(rect1);
+ rect2 = Util.normalizeRect(rect2);
+
+ // X: first and second points belong to different rectangles?
+ if ((orderedX[0] === rect1[0] && orderedX[1] === rect2[0]) ||
+ (orderedX[0] === rect2[0] && orderedX[1] === rect1[0])) {
+ // Intersection must be between second and third points
+ result[0] = orderedX[1];
+ result[2] = orderedX[2];
+ } else {
+ return false;
+ }
+
+ // Y: first and second points belong to different rectangles?
+ if ((orderedY[0] === rect1[1] && orderedY[1] === rect2[1]) ||
+ (orderedY[0] === rect2[1] && orderedY[1] === rect1[1])) {
+ // Intersection must be between second and third points
+ result[1] = orderedY[1];
+ result[3] = orderedY[2];
+ } else {
+ return false;
+ }
+
+ return result;
+ };
+
+ Util.sign = function Util_sign(num) {
+ return num < 0 ? -1 : 1;
+ };
+
+ var ROMAN_NUMBER_MAP = [
+ '', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM',
+ '', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC',
+ '', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX'
+ ];
+ /**
+ * Converts positive integers to (upper case) Roman numerals.
+ * @param {integer} number - The number that should be converted.
+ * @param {boolean} lowerCase - Indicates if the result should be converted
+ * to lower case letters. The default is false.
+ * @return {string} The resulting Roman number.
+ */
+ Util.toRoman = function Util_toRoman(number, lowerCase) {
+ assert(isInt(number) && number > 0,
+ 'The number should be a positive integer.');
+ var pos, romanBuf = [];
+ // Thousands
+ while (number >= 1000) {
+ number -= 1000;
+ romanBuf.push('M');
+ }
+ // Hundreds
+ pos = (number / 100) | 0;
+ number %= 100;
+ romanBuf.push(ROMAN_NUMBER_MAP[pos]);
+ // Tens
+ pos = (number / 10) | 0;
+ number %= 10;
+ romanBuf.push(ROMAN_NUMBER_MAP[10 + pos]);
+ // Ones
+ romanBuf.push(ROMAN_NUMBER_MAP[20 + number]);
+
+ var romanStr = romanBuf.join('');
+ return (lowerCase ? romanStr.toLowerCase() : romanStr);
+ };
+
+ Util.appendToArray = function Util_appendToArray(arr1, arr2) {
+ Array.prototype.push.apply(arr1, arr2);
+ };
+
+ Util.prependToArray = function Util_prependToArray(arr1, arr2) {
+ Array.prototype.unshift.apply(arr1, arr2);
+ };
+
+ Util.extendObj = function extendObj(obj1, obj2) {
+ for (var key in obj2) {
+ obj1[key] = obj2[key];
+ }
+ };
+
+ Util.getInheritableProperty = function Util_getInheritableProperty(dict,
+ name) {
+ while (dict && !dict.has(name)) {
+ dict = dict.get('Parent');
+ }
+ if (!dict) {
+ return null;
+ }
+ return dict.get(name);
+ };
+
+ Util.inherit = function Util_inherit(sub, base, prototype) {
+ sub.prototype = Object.create(base.prototype);
+ sub.prototype.constructor = sub;
+ for (var prop in prototype) {
+ sub.prototype[prop] = prototype[prop];
+ }
+ };
+
+ Util.loadScript = function Util_loadScript(src, callback) {
+ var script = document.createElement('script');
+ var loaded = false;
+ script.setAttribute('src', src);
+ if (callback) {
+ script.onload = function() {
+ if (!loaded) {
+ callback();
+ }
+ loaded = true;
+ };
+ }
+ document.getElementsByTagName('head')[0].appendChild(script);
+ };
+
+ return Util;
+})();
+
+/**
+ * PDF page viewport created based on scale, rotation and offset.
+ * @class
+ * @alias 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 utf8StringToString(str) {
+ return unescape(encodeURIComponent(str));
+}
+
+function isEmptyObj(obj) {
+ for (var key in obj) {
+ return false;
+ }
+ return true;
+}
+
+function isBool(v) {
+ return typeof v === 'boolean';
+}
+
+function isInt(v) {
+ return typeof v === 'number' && ((v | 0) === v);
+}
+
+function isNum(v) {
+ return typeof v === 'number';
+}
+
+function isString(v) {
+ return typeof v === 'string';
+}
+
+function isArray(v) {
+ return v instanceof Array;
+}
+
+function isArrayBuffer(v) {
+ return typeof v === 'object' && v !== null && v.byteLength !== undefined;
+}
+
+/**
+ * Promise Capability object.
+ *
+ * @typedef {Object} PromiseCapability
+ * @property {Promise} promise - A promise object.
+ * @property {function} resolve - Fullfills the promise.
+ * @property {function} reject - Rejects the promise.
+ */
+
+/**
+ * Creates a promise capability object.
+ * @alias 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 = resolve;
+ this.reject = reject;
+ });
+ this._handlers.push({
+ thisPromise: this,
+ onResolve: onResolve,
+ onReject: onReject,
+ nextPromise: nextPromise
+ });
+ HandlerManager.scheduleHandlers(this);
+ return nextPromise;
+ },
+
+ catch: function Promise_catch(onReject) {
+ return this.then(undefined, onReject);
+ }
+ };
+
+ globalScope.Promise = Promise;
+})();
+
+var StatTimer = (function StatTimerClosure() {
+ function rpad(str, pad, length) {
+ while (str.length < length) {
+ str += pad;
+ }
+ return str;
+ }
+ function StatTimer() {
+ this.started = {};
+ 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(sourceName, targetName, comObj) {
+ this.sourceName = sourceName;
+ this.targetName = targetName;
+ this.comObj = comObj;
+ this.callbackIndex = 1;
+ this.postMessageTransfers = true;
+ var callbacksCapabilities = this.callbacksCapabilities = {};
+ var ah = this.actionHandler = {};
+
+ this._onComObjOnMessage = function messageHandlerComObjOnMessage(event) {
+ var data = event.data;
+ if (data.targetName !== this.sourceName) {
+ return;
+ }
+ if (data.isReply) {
+ var callbackId = data.callbackId;
+ if (data.callbackId in callbacksCapabilities) {
+ var callback = callbacksCapabilities[callbackId];
+ delete callbacksCapabilities[callbackId];
+ if ('error' in data) {
+ callback.reject(data.error);
+ } else {
+ callback.resolve(data.data);
+ }
+ } else {
+ error('Cannot resolve callback ' + callbackId);
+ }
+ } else if (data.action in ah) {
+ var action = ah[data.action];
+ if (data.callbackId) {
+ var sourceName = this.sourceName;
+ var targetName = data.sourceName;
+ Promise.resolve().then(function () {
+ return action[0].call(action[1], data.data);
+ }).then(function (result) {
+ comObj.postMessage({
+ sourceName: sourceName,
+ targetName: targetName,
+ isReply: true,
+ callbackId: data.callbackId,
+ data: result
+ });
+ }, function (reason) {
+ if (reason instanceof Error) {
+ // Serialize error to avoid "DataCloneError"
+ reason = reason + '';
+ }
+ comObj.postMessage({
+ sourceName: sourceName,
+ targetName: targetName,
+ isReply: true,
+ callbackId: data.callbackId,
+ error: reason
+ });
+ });
+ } else {
+ action[0].call(action[1], data.data);
+ }
+ } else {
+ error('Unknown action from worker: ' + data.action);
+ }
+ }.bind(this);
+ comObj.addEventListener('message', this._onComObjOnMessage);
+}
+
+MessageHandler.prototype = {
+ on: function messageHandlerOn(actionName, handler, scope) {
+ var ah = this.actionHandler;
+ if (ah[actionName]) {
+ error('There is already an actionName called "' + actionName + '"');
+ }
+ ah[actionName] = [handler, scope];
+ },
+ /**
+ * Sends a message to the comObj to invoke the action with the supplied data.
+ * @param {String} actionName Action to call.
+ * @param {JSON} data JSON data to send.
+ * @param {Array} [transfers] Optional list of transfers/ArrayBuffers
+ */
+ send: function messageHandlerSend(actionName, data, transfers) {
+ var message = {
+ sourceName: this.sourceName,
+ targetName: this.targetName,
+ action: actionName,
+ data: data
+ };
+ this.postMessage(message, transfers);
+ },
+ /**
+ * Sends a message to the comObj to invoke the action with the supplied data.
+ * Expects that other side will callback with the response.
+ * @param {String} actionName Action to call.
+ * @param {JSON} data JSON data to send.
+ * @param {Array} [transfers] Optional list of transfers/ArrayBuffers.
+ * @returns {Promise} Promise to be resolved with response data.
+ */
+ sendWithPromise:
+ function messageHandlerSendWithPromise(actionName, data, transfers) {
+ var callbackId = this.callbackIndex++;
+ var message = {
+ sourceName: this.sourceName,
+ targetName: this.targetName,
+ action: actionName,
+ data: data,
+ callbackId: callbackId
+ };
+ var capability = createPromiseCapability();
+ this.callbacksCapabilities[callbackId] = capability;
+ try {
+ this.postMessage(message, transfers);
+ } catch (e) {
+ capability.reject(e);
+ }
+ return capability.promise;
+ },
+ /**
+ * Sends raw message to the comObj.
+ * @private
+ * @param message {Object} Raw message.
+ * @param transfers List of transfers/ArrayBuffers, or undefined.
+ */
+ postMessage: function (message, transfers) {
+ if (transfers && this.postMessageTransfers) {
+ this.comObj.postMessage(message, transfers);
+ } else {
+ this.comObj.postMessage(message);
+ }
+ },
+
+ destroy: function () {
+ this.comObj.removeEventListener('message', this._onComObjOnMessage);
+ }
+};
+
+function loadJpegStream(id, imageUrl, objs) {
+ var img = new Image();
+ img.onload = (function loadJpegStream_onloadClosure() {
+ objs.resolve(id, img);
+ });
+ img.onerror = (function loadJpegStream_onerrorClosure() {
+ objs.resolve(id, null);
+ warn('Error during JPEG image loading');
+ });
+ img.src = imageUrl;
+}
+
+ // Polyfill from https://github.com/Polymer/URL
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+(function checkURLConstructor(scope) {
+ /* jshint ignore:start */
+
+ // feature detect for URL constructor
+ var hasWorkingUrl = false;
+ try {
+ if (typeof URL === 'function' &&
+ typeof URL.prototype === 'object' &&
+ ('origin' in URL.prototype)) {
+ var u = new URL('b', 'http://a');
+ u.pathname = 'c%20d';
+ hasWorkingUrl = u.href === 'http://a/c%20d';
+ }
+ } catch(e) { }
+
+ if (hasWorkingUrl)
+ return;
+
+ var relative = Object.create(null);
+ relative['ftp'] = 21;
+ relative['file'] = 0;
+ relative['gopher'] = 70;
+ relative['http'] = 80;
+ relative['https'] = 443;
+ relative['ws'] = 80;
+ relative['wss'] = 443;
+
+ var relativePathDotMapping = Object.create(null);
+ relativePathDotMapping['%2e'] = '.';
+ relativePathDotMapping['.%2e'] = '..';
+ relativePathDotMapping['%2e.'] = '..';
+ relativePathDotMapping['%2e%2e'] = '..';
+
+ function isRelativeScheme(scheme) {
+ return relative[scheme] !== undefined;
+ }
+
+ function invalid() {
+ clear.call(this);
+ this._isInvalid = true;
+ }
+
+ function IDNAToASCII(h) {
+ if ('' == h) {
+ invalid.call(this)
+ }
+ // XXX
+ return h.toLowerCase()
+ }
+
+ function percentEscape(c) {
+ var unicode = c.charCodeAt(0);
+ if (unicode > 0x20 &&
+ unicode < 0x7F &&
+ // " # < > ? `
+ [0x22, 0x23, 0x3C, 0x3E, 0x3F, 0x60].indexOf(unicode) == -1
+ ) {
+ return c;
+ }
+ return encodeURIComponent(c);
+ }
+
+ function percentEscapeQuery(c) {
+ // XXX This actually needs to encode c using encoding and then
+ // convert the bytes one-by-one.
+
+ var unicode = c.charCodeAt(0);
+ if (unicode > 0x20 &&
+ unicode < 0x7F &&
+ // " # < > ` (do not escape '?')
+ [0x22, 0x23, 0x3C, 0x3E, 0x60].indexOf(unicode) == -1
+ ) {
+ return c;
+ }
+ return encodeURIComponent(c);
+ }
+
+ var EOF = undefined,
+ ALPHA = /[a-zA-Z]/,
+ ALPHANUMERIC = /[a-zA-Z0-9\+\-\.]/;
+
+ function parse(input, stateOverride, base) {
+ function err(message) {
+ errors.push(message)
+ }
+
+ var state = stateOverride || 'scheme start',
+ cursor = 0,
+ buffer = '',
+ seenAt = false,
+ seenBracket = false,
+ errors = [];
+
+ loop: while ((input[cursor - 1] != EOF || cursor == 0) && !this._isInvalid) {
+ var c = input[cursor];
+ switch (state) {
+ case 'scheme start':
+ if (c && ALPHA.test(c)) {
+ buffer += c.toLowerCase(); // ASCII-safe
+ state = 'scheme';
+ } else if (!stateOverride) {
+ buffer = '';
+ state = 'no scheme';
+ continue;
+ } else {
+ err('Invalid scheme.');
+ break loop;
+ }
+ break;
+
+ case 'scheme':
+ if (c && ALPHANUMERIC.test(c)) {
+ buffer += c.toLowerCase(); // ASCII-safe
+ } else if (':' == c) {
+ this._scheme = buffer;
+ buffer = '';
+ if (stateOverride) {
+ break loop;
+ }
+ if (isRelativeScheme(this._scheme)) {
+ this._isRelative = true;
+ }
+ if ('file' == this._scheme) {
+ state = 'relative';
+ } else if (this._isRelative && base && base._scheme == this._scheme) {
+ state = 'relative or authority';
+ } else if (this._isRelative) {
+ state = 'authority first slash';
+ } else {
+ state = 'scheme data';
+ }
+ } else if (!stateOverride) {
+ buffer = '';
+ cursor = 0;
+ state = 'no scheme';
+ continue;
+ } else if (EOF == c) {
+ break loop;
+ } else {
+ err('Code point not allowed in scheme: ' + c)
+ break loop;
+ }
+ break;
+
+ case 'scheme data':
+ if ('?' == c) {
+ this._query = '?';
+ state = 'query';
+ } else if ('#' == c) {
+ this._fragment = '#';
+ state = 'fragment';
+ } else {
+ // XXX error handling
+ if (EOF != c && '\t' != c && '\n' != c && '\r' != c) {
+ this._schemeData += percentEscape(c);
+ }
+ }
+ break;
+
+ case 'no scheme':
+ if (!base || !(isRelativeScheme(base._scheme))) {
+ err('Missing scheme.');
+ invalid.call(this);
+ } else {
+ state = 'relative';
+ continue;
+ }
+ break;
+
+ case 'relative or authority':
+ if ('/' == c && '/' == input[cursor+1]) {
+ state = 'authority ignore slashes';
+ } else {
+ err('Expected /, got: ' + c);
+ state = 'relative';
+ continue
+ }
+ break;
+
+ case 'relative':
+ this._isRelative = true;
+ if ('file' != this._scheme)
+ this._scheme = base._scheme;
+ if (EOF == c) {
+ this._host = base._host;
+ this._port = base._port;
+ this._path = base._path.slice();
+ this._query = base._query;
+ this._username = base._username;
+ this._password = base._password;
+ break loop;
+ } else if ('/' == c || '\\' == c) {
+ if ('\\' == c)
+ err('\\ is an invalid code point.');
+ state = 'relative slash';
+ } else if ('?' == c) {
+ this._host = base._host;
+ this._port = base._port;
+ this._path = base._path.slice();
+ this._query = '?';
+ this._username = base._username;
+ this._password = base._password;
+ state = 'query';
+ } else if ('#' == c) {
+ this._host = base._host;
+ this._port = base._port;
+ this._path = base._path.slice();
+ this._query = base._query;
+ this._fragment = '#';
+ this._username = base._username;
+ this._password = base._password;
+ state = 'fragment';
+ } else {
+ var nextC = input[cursor+1]
+ var nextNextC = input[cursor+2]
+ if (
+ 'file' != this._scheme || !ALPHA.test(c) ||
+ (nextC != ':' && nextC != '|') ||
+ (EOF != nextNextC && '/' != nextNextC && '\\' != nextNextC && '?' != nextNextC && '#' != nextNextC)) {
+ this._host = base._host;
+ this._port = base._port;
+ this._username = base._username;
+ this._password = base._password;
+ this._path = base._path.slice();
+ this._path.pop();
+ }
+ state = 'relative path';
+ continue;
+ }
+ break;
+
+ case 'relative slash':
+ if ('/' == c || '\\' == c) {
+ if ('\\' == c) {
+ err('\\ is an invalid code point.');
+ }
+ if ('file' == this._scheme) {
+ state = 'file host';
+ } else {
+ state = 'authority ignore slashes';
+ }
+ } else {
+ if ('file' != this._scheme) {
+ this._host = base._host;
+ this._port = base._port;
+ this._username = base._username;
+ this._password = base._password;
+ }
+ state = 'relative path';
+ continue;
+ }
+ break;
+
+ case 'authority first slash':
+ if ('/' == c) {
+ state = 'authority second slash';
+ } else {
+ err("Expected '/', got: " + c);
+ state = 'authority ignore slashes';
+ continue;
+ }
+ break;
+
+ case 'authority second slash':
+ state = 'authority ignore slashes';
+ if ('/' != c) {
+ err("Expected '/', got: " + c);
+ continue;
+ }
+ break;
+
+ case 'authority ignore slashes':
+ if ('/' != c && '\\' != c) {
+ state = 'authority';
+ continue;
+ } else {
+ err('Expected authority, got: ' + c);
+ }
+ break;
+
+ case 'authority':
+ if ('@' == c) {
+ if (seenAt) {
+ err('@ already seen.');
+ buffer += '%40';
+ }
+ seenAt = true;
+ for (var i = 0; i < buffer.length; i++) {
+ var cp = buffer[i];
+ if ('\t' == cp || '\n' == cp || '\r' == cp) {
+ err('Invalid whitespace in authority.');
+ continue;
+ }
+ // XXX check URL code points
+ if (':' == cp && null === this._password) {
+ this._password = '';
+ continue;
+ }
+ var tempC = percentEscape(cp);
+ (null !== this._password) ? this._password += tempC : this._username += tempC;
+ }
+ buffer = '';
+ } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) {
+ cursor -= buffer.length;
+ buffer = '';
+ state = 'host';
+ continue;
+ } else {
+ buffer += c;
+ }
+ break;
+
+ case 'file host':
+ if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) {
+ if (buffer.length == 2 && ALPHA.test(buffer[0]) && (buffer[1] == ':' || buffer[1] == '|')) {
+ state = 'relative path';
+ } else if (buffer.length == 0) {
+ state = 'relative path start';
+ } else {
+ this._host = IDNAToASCII.call(this, buffer);
+ buffer = '';
+ state = 'relative path start';
+ }
+ continue;
+ } else if ('\t' == c || '\n' == c || '\r' == c) {
+ err('Invalid whitespace in file host.');
+ } else {
+ buffer += c;
+ }
+ break;
+
+ case 'host':
+ case 'hostname':
+ if (':' == c && !seenBracket) {
+ // XXX host parsing
+ this._host = IDNAToASCII.call(this, buffer);
+ buffer = '';
+ state = 'port';
+ if ('hostname' == stateOverride) {
+ break loop;
+ }
+ } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) {
+ this._host = IDNAToASCII.call(this, buffer);
+ buffer = '';
+ state = 'relative path start';
+ if (stateOverride) {
+ break loop;
+ }
+ continue;
+ } else if ('\t' != c && '\n' != c && '\r' != c) {
+ if ('[' == c) {
+ seenBracket = true;
+ } else if (']' == c) {
+ seenBracket = false;
+ }
+ buffer += c;
+ } else {
+ err('Invalid code point in host/hostname: ' + c);
+ }
+ break;
+
+ case 'port':
+ if (/[0-9]/.test(c)) {
+ buffer += c;
+ } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c || stateOverride) {
+ if ('' != buffer) {
+ var temp = parseInt(buffer, 10);
+ if (temp != relative[this._scheme]) {
+ this._port = temp + '';
+ }
+ buffer = '';
+ }
+ if (stateOverride) {
+ break loop;
+ }
+ state = 'relative path start';
+ continue;
+ } else if ('\t' == c || '\n' == c || '\r' == c) {
+ err('Invalid code point in port: ' + c);
+ } else {
+ invalid.call(this);
+ }
+ break;
+
+ case 'relative path start':
+ if ('\\' == c)
+ err("'\\' not allowed in path.");
+ state = 'relative path';
+ if ('/' != c && '\\' != c) {
+ continue;
+ }
+ break;
+
+ case 'relative path':
+ if (EOF == c || '/' == c || '\\' == c || (!stateOverride && ('?' == c || '#' == c))) {
+ if ('\\' == c) {
+ err('\\ not allowed in relative path.');
+ }
+ var tmp;
+ if (tmp = relativePathDotMapping[buffer.toLowerCase()]) {
+ buffer = tmp;
+ }
+ if ('..' == buffer) {
+ this._path.pop();
+ if ('/' != c && '\\' != c) {
+ this._path.push('');
+ }
+ } else if ('.' == buffer && '/' != c && '\\' != c) {
+ this._path.push('');
+ } else if ('.' != buffer) {
+ if ('file' == this._scheme && this._path.length == 0 && buffer.length == 2 && ALPHA.test(buffer[0]) && buffer[1] == '|') {
+ buffer = buffer[0] + ':';
+ }
+ this._path.push(buffer);
+ }
+ buffer = '';
+ if ('?' == c) {
+ this._query = '?';
+ state = 'query';
+ } else if ('#' == c) {
+ this._fragment = '#';
+ state = 'fragment';
+ }
+ } else if ('\t' != c && '\n' != c && '\r' != c) {
+ buffer += percentEscape(c);
+ }
+ break;
+
+ case 'query':
+ if (!stateOverride && '#' == c) {
+ this._fragment = '#';
+ state = 'fragment';
+ } else if (EOF != c && '\t' != c && '\n' != c && '\r' != c) {
+ this._query += percentEscapeQuery(c);
+ }
+ break;
+
+ case 'fragment':
+ if (EOF != c && '\t' != c && '\n' != c && '\r' != c) {
+ this._fragment += c;
+ }
+ break;
+ }
+
+ cursor++;
+ }
+ }
+
+ function clear() {
+ this._scheme = '';
+ this._schemeData = '';
+ this._username = '';
+ this._password = null;
+ this._host = '';
+ this._port = '';
+ this._path = [];
+ this._query = '';
+ this._fragment = '';
+ this._isInvalid = false;
+ this._isRelative = false;
+ }
+
+ // Does not process domain names or IP addresses.
+ // Does not handle encoding for the query parameter.
+ function jURL(url, base /* , encoding */) {
+ if (base !== undefined && !(base instanceof jURL))
+ base = new jURL(String(base));
+
+ this._url = url;
+ clear.call(this);
+
+ var input = url.replace(/^[ \t\r\n\f]+|[ \t\r\n\f]+$/g, '');
+ // encoding = encoding || 'utf-8'
+
+ parse.call(this, input, null, base);
+ }
+
+ jURL.prototype = {
+ toString: function() {
+ return this.href;
+ },
+ get href() {
+ if (this._isInvalid)
+ return this._url;
+
+ var authority = '';
+ if ('' != this._username || null != this._password) {
+ authority = this._username +
+ (null != this._password ? ':' + this._password : '') + '@';
+ }
+
+ return this.protocol +
+ (this._isRelative ? '//' + authority + this.host : '') +
+ this.pathname + this._query + this._fragment;
+ },
+ set href(href) {
+ clear.call(this);
+ parse.call(this, href);
+ },
+
+ get protocol() {
+ return this._scheme + ':';
+ },
+ set protocol(protocol) {
+ if (this._isInvalid)
+ return;
+ parse.call(this, protocol + ':', 'scheme start');
+ },
+
+ get host() {
+ return this._isInvalid ? '' : this._port ?
+ this._host + ':' + this._port : this._host;
+ },
+ set host(host) {
+ if (this._isInvalid || !this._isRelative)
+ return;
+ parse.call(this, host, 'host');
+ },
+
+ get hostname() {
+ return this._host;
+ },
+ set hostname(hostname) {
+ if (this._isInvalid || !this._isRelative)
+ return;
+ parse.call(this, hostname, 'hostname');
+ },
+
+ get port() {
+ return this._port;
+ },
+ set port(port) {
+ if (this._isInvalid || !this._isRelative)
+ return;
+ parse.call(this, port, 'port');
+ },
+
+ get pathname() {
+ return this._isInvalid ? '' : this._isRelative ?
+ '/' + this._path.join('/') : this._schemeData;
+ },
+ set pathname(pathname) {
+ if (this._isInvalid || !this._isRelative)
+ return;
+ this._path = [];
+ parse.call(this, pathname, 'relative path start');
+ },
+
+ get search() {
+ return this._isInvalid || !this._query || '?' == this._query ?
+ '' : this._query;
+ },
+ set search(search) {
+ if (this._isInvalid || !this._isRelative)
+ return;
+ this._query = '?';
+ if ('?' == search[0])
+ search = search.slice(1);
+ parse.call(this, search, 'query');
+ },
+
+ get hash() {
+ return this._isInvalid || !this._fragment || '#' == this._fragment ?
+ '' : this._fragment;
+ },
+ set hash(hash) {
+ if (this._isInvalid)
+ return;
+ this._fragment = '#';
+ if ('#' == hash[0])
+ hash = hash.slice(1);
+ parse.call(this, hash, 'fragment');
+ },
+
+ get origin() {
+ var host;
+ if (this._isInvalid || !this._scheme) {
+ return '';
+ }
+ // javascript: Gecko returns String(""), WebKit/Blink String("null")
+ // Gecko throws error for "data://"
+ // data: Gecko returns "", Blink returns "data://", WebKit returns "null"
+ // Gecko returns String("") for file: mailto:
+ // WebKit/Blink returns String("SCHEME://") for file: mailto:
+ switch (this._scheme) {
+ case 'data':
+ case 'file':
+ case 'javascript':
+ case 'mailto':
+ return 'null';
+ }
+ host = this.host;
+ if (!host) {
+ return '';
+ }
+ return this._scheme + '://' + host;
+ }
+ };
+
+ // Copy over the static methods
+ var OriginalURL = scope.URL;
+ if (OriginalURL) {
+ jURL.createObjectURL = function(blob) {
+ // IE extension allows a second optional options argument.
+ // http://msdn.microsoft.com/en-us/library/ie/hh772302(v=vs.85).aspx
+ return OriginalURL.createObjectURL.apply(OriginalURL, arguments);
+ };
+ jURL.revokeObjectURL = function(url) {
+ OriginalURL.revokeObjectURL(url);
+ };
+ }
+
+ scope.URL = jURL;
+ /* jshint ignore:end */
+})(globalScope);
+
+exports.FONT_IDENTITY_MATRIX = FONT_IDENTITY_MATRIX;
+exports.IDENTITY_MATRIX = IDENTITY_MATRIX;
+exports.OPS = OPS;
+exports.UNSUPPORTED_FEATURES = UNSUPPORTED_FEATURES;
+exports.AnnotationBorderStyleType = AnnotationBorderStyleType;
+exports.AnnotationFlag = AnnotationFlag;
+exports.AnnotationType = AnnotationType;
+exports.FontType = FontType;
+exports.ImageKind = ImageKind;
+exports.InvalidPDFException = InvalidPDFException;
+exports.LinkTarget = LinkTarget;
+exports.LinkTargetStringMap = LinkTargetStringMap;
+exports.MessageHandler = MessageHandler;
+exports.MissingDataException = MissingDataException;
+exports.MissingPDFException = MissingPDFException;
+exports.NotImplementedException = NotImplementedException;
+exports.PasswordException = PasswordException;
+exports.PasswordResponses = PasswordResponses;
+exports.StatTimer = StatTimer;
+exports.StreamType = StreamType;
+exports.TextRenderingMode = TextRenderingMode;
+exports.UnexpectedResponseException = UnexpectedResponseException;
+exports.UnknownErrorException = UnknownErrorException;
+exports.Util = Util;
+exports.XRefParseException = XRefParseException;
+exports.assert = assert;
+exports.bytesToString = bytesToString;
+exports.combineUrl = combineUrl;
+exports.createPromiseCapability = createPromiseCapability;
+exports.deprecated = deprecated;
+exports.error = error;
+exports.info = info;
+exports.isArray = isArray;
+exports.isArrayBuffer = isArrayBuffer;
+exports.isBool = isBool;
+exports.isEmptyObj = isEmptyObj;
+exports.isExternalLinkTargetSet = isExternalLinkTargetSet;
+exports.isInt = isInt;
+exports.isNum = isNum;
+exports.isString = isString;
+exports.isValidUrl = isValidUrl;
+exports.addLinkAttributes = addLinkAttributes;
+exports.loadJpegStream = loadJpegStream;
+exports.log2 = log2;
+exports.readInt8 = readInt8;
+exports.readUint16 = readUint16;
+exports.readUint32 = readUint32;
+exports.removeNullCharacters = removeNullCharacters;
+exports.shadow = shadow;
+exports.string32 = string32;
+exports.stringToBytes = stringToBytes;
+exports.stringToPDFString = stringToPDFString;
+exports.stringToUTF8String = stringToUTF8String;
+exports.utf8StringToString = utf8StringToString;
+exports.warn = warn;
+}));
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsDisplayAnnotationLayer = {}), root.pdfjsSharedUtil,
+ root.pdfjsDisplayDOMUtils);
+ }
+}(this, function (exports, sharedUtil, displayDOMUtils) {
+
+var AnnotationBorderStyleType = sharedUtil.AnnotationBorderStyleType;
+var AnnotationType = sharedUtil.AnnotationType;
+var Util = sharedUtil.Util;
+var addLinkAttributes = sharedUtil.addLinkAttributes;
+var warn = sharedUtil.warn;
+var CustomStyle = displayDOMUtils.CustomStyle;
+
+/**
+ * @typedef {Object} AnnotationElementParameters
+ * @property {Object} data
+ * @property {HTMLDivElement} layer
+ * @property {PDFPage} page
+ * @property {PageViewport} viewport
+ * @property {IPDFLinkService} linkService
+ */
+
+/**
+ * @class
+ * @alias AnnotationElementFactory
+ */
+function AnnotationElementFactory() {}
+AnnotationElementFactory.prototype =
+ /** @lends AnnotationElementFactory.prototype */ {
+ /**
+ * @param {AnnotationElementParameters} parameters
+ * @returns {AnnotationElement}
+ */
+ create: function AnnotationElementFactory_create(parameters) {
+ var subtype = parameters.data.annotationType;
+
+ switch (subtype) {
+ case AnnotationType.LINK:
+ return new LinkAnnotationElement(parameters);
+
+ case AnnotationType.TEXT:
+ return new TextAnnotationElement(parameters);
+
+ case AnnotationType.WIDGET:
+ return new WidgetAnnotationElement(parameters);
+
+ case AnnotationType.POPUP:
+ return new PopupAnnotationElement(parameters);
+
+ case AnnotationType.HIGHLIGHT:
+ return new HighlightAnnotationElement(parameters);
+
+ case AnnotationType.UNDERLINE:
+ return new UnderlineAnnotationElement(parameters);
+
+ case AnnotationType.SQUIGGLY:
+ return new SquigglyAnnotationElement(parameters);
+
+ case AnnotationType.STRIKEOUT:
+ return new StrikeOutAnnotationElement(parameters);
+
+ default:
+ throw new Error('Unimplemented annotation type "' + subtype + '"');
+ }
+ }
+};
+
+/**
+ * @class
+ * @alias AnnotationElement
+ */
+var AnnotationElement = (function AnnotationElementClosure() {
+ function AnnotationElement(parameters) {
+ this.data = parameters.data;
+ this.layer = parameters.layer;
+ this.page = parameters.page;
+ this.viewport = parameters.viewport;
+ this.linkService = parameters.linkService;
+
+ this.container = this._createContainer();
+ }
+
+ AnnotationElement.prototype = /** @lends AnnotationElement.prototype */ {
+ /**
+ * Create an empty container for the annotation's HTML element.
+ *
+ * @private
+ * @memberof AnnotationElement
+ * @returns {HTMLSectionElement}
+ */
+ _createContainer: function AnnotationElement_createContainer() {
+ var data = this.data, page = this.page, viewport = this.viewport;
+ var container = document.createElement('section');
+ var width = data.rect[2] - data.rect[0];
+ var height = data.rect[3] - data.rect[1];
+
+ container.setAttribute('data-annotation-id', data.id);
+
+ // Do *not* modify `data.rect`, since that will corrupt the annotation
+ // position on subsequent calls to `_createContainer` (see issue 6804).
+ var rect = Util.normalizeRect([
+ data.rect[0],
+ page.view[3] - data.rect[1] + page.view[1],
+ data.rect[2],
+ page.view[3] - data.rect[3] + page.view[1]
+ ]);
+
+ CustomStyle.setProp('transform', container,
+ 'matrix(' + viewport.transform.join(',') + ')');
+ CustomStyle.setProp('transformOrigin', container,
+ -rect[0] + 'px ' + -rect[1] + 'px');
+
+ if (data.borderStyle.width > 0) {
+ container.style.borderWidth = data.borderStyle.width + 'px';
+ if (data.borderStyle.style !== AnnotationBorderStyleType.UNDERLINE) {
+ // Underline styles only have a bottom border, so we do not need
+ // to adjust for all borders. This yields a similar result as
+ // Adobe Acrobat/Reader.
+ width = width - 2 * data.borderStyle.width;
+ height = height - 2 * data.borderStyle.width;
+ }
+
+ var horizontalRadius = data.borderStyle.horizontalCornerRadius;
+ var verticalRadius = data.borderStyle.verticalCornerRadius;
+ if (horizontalRadius > 0 || verticalRadius > 0) {
+ var radius = horizontalRadius + 'px / ' + verticalRadius + 'px';
+ CustomStyle.setProp('borderRadius', container, radius);
+ }
+
+ switch (data.borderStyle.style) {
+ case AnnotationBorderStyleType.SOLID:
+ container.style.borderStyle = 'solid';
+ break;
+
+ case AnnotationBorderStyleType.DASHED:
+ container.style.borderStyle = 'dashed';
+ break;
+
+ case AnnotationBorderStyleType.BEVELED:
+ warn('Unimplemented border style: beveled');
+ break;
+
+ case AnnotationBorderStyleType.INSET:
+ warn('Unimplemented border style: inset');
+ break;
+
+ case AnnotationBorderStyleType.UNDERLINE:
+ container.style.borderBottomStyle = 'solid';
+ break;
+
+ default:
+ break;
+ }
+
+ if (data.color) {
+ container.style.borderColor =
+ Util.makeCssRgb(data.color[0] | 0,
+ data.color[1] | 0,
+ data.color[2] | 0);
+ } else {
+ // Transparent (invisible) border, so do not draw it at all.
+ container.style.borderWidth = 0;
+ }
+ }
+
+ container.style.left = rect[0] + 'px';
+ container.style.top = rect[1] + 'px';
+
+ container.style.width = width + 'px';
+ container.style.height = height + 'px';
+
+ return container;
+ },
+
+ /**
+ * Render the annotation's HTML element in the empty container.
+ *
+ * @public
+ * @memberof AnnotationElement
+ */
+ render: function AnnotationElement_render() {
+ throw new Error('Abstract method AnnotationElement.render called');
+ }
+ };
+
+ return AnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias LinkAnnotationElement
+ */
+var LinkAnnotationElement = (function LinkAnnotationElementClosure() {
+ function LinkAnnotationElement(parameters) {
+ AnnotationElement.call(this, parameters);
+ }
+
+ Util.inherit(LinkAnnotationElement, AnnotationElement, {
+ /**
+ * Render the link annotation's HTML element in the empty container.
+ *
+ * @public
+ * @memberof LinkAnnotationElement
+ * @returns {HTMLSectionElement}
+ */
+ render: function LinkAnnotationElement_render() {
+ this.container.className = 'linkAnnotation';
+
+ var link = document.createElement('a');
+ addLinkAttributes(link, { url: this.data.url });
+
+ if (!this.data.url) {
+ if (this.data.action) {
+ this._bindNamedAction(link, this.data.action);
+ } else {
+ this._bindLink(link, ('dest' in this.data) ? this.data.dest : null);
+ }
+ }
+
+ this.container.appendChild(link);
+ return this.container;
+ },
+
+ /**
+ * Bind internal links to the link element.
+ *
+ * @private
+ * @param {Object} link
+ * @param {Object} destination
+ * @memberof LinkAnnotationElement
+ */
+ _bindLink: function LinkAnnotationElement_bindLink(link, destination) {
+ var self = this;
+
+ link.href = this.linkService.getDestinationHash(destination);
+ link.onclick = function() {
+ if (destination) {
+ self.linkService.navigateTo(destination);
+ }
+ return false;
+ };
+ if (destination) {
+ link.className = 'internalLink';
+ }
+ },
+
+ /**
+ * Bind named actions to the link element.
+ *
+ * @private
+ * @param {Object} link
+ * @param {Object} action
+ * @memberof LinkAnnotationElement
+ */
+ _bindNamedAction:
+ function LinkAnnotationElement_bindNamedAction(link, action) {
+ var self = this;
+
+ link.href = this.linkService.getAnchorUrl('');
+ link.onclick = function() {
+ self.linkService.executeNamedAction(action);
+ return false;
+ };
+ link.className = 'internalLink';
+ }
+ });
+
+ return LinkAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias TextAnnotationElement
+ */
+var TextAnnotationElement = (function TextAnnotationElementClosure() {
+ function TextAnnotationElement(parameters) {
+ AnnotationElement.call(this, parameters);
+ }
+
+ Util.inherit(TextAnnotationElement, AnnotationElement, {
+ /**
+ * Render the text annotation's HTML element in the empty container.
+ *
+ * @public
+ * @memberof TextAnnotationElement
+ * @returns {HTMLSectionElement}
+ */
+ render: function TextAnnotationElement_render() {
+ this.container.className = 'textAnnotation';
+
+ var image = document.createElement('img');
+ image.style.height = this.container.style.height;
+ image.style.width = this.container.style.width;
+ image.src = PDFJS.imageResourcesPath + 'annotation-' +
+ this.data.name.toLowerCase() + '.svg';
+ image.alt = '[{{type}} Annotation]';
+ image.dataset.l10nId = 'text_annotation_type';
+ image.dataset.l10nArgs = JSON.stringify({type: this.data.name});
+
+ if (!this.data.hasPopup) {
+ var popupElement = new PopupElement({
+ container: this.container,
+ trigger: image,
+ color: this.data.color,
+ title: this.data.title,
+ contents: this.data.contents,
+ hideWrapper: true
+ });
+ var popup = popupElement.render();
+
+ // Position the popup next to the Text annotation's container.
+ popup.style.left = image.style.width;
+
+ this.container.appendChild(popup);
+ }
+
+ this.container.appendChild(image);
+ return this.container;
+ }
+ });
+
+ return TextAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias WidgetAnnotationElement
+ */
+var WidgetAnnotationElement = (function WidgetAnnotationElementClosure() {
+ function WidgetAnnotationElement(parameters) {
+ AnnotationElement.call(this, parameters);
+ }
+
+ Util.inherit(WidgetAnnotationElement, AnnotationElement, {
+ /**
+ * Render the widget annotation's HTML element in the empty container.
+ *
+ * @public
+ * @memberof WidgetAnnotationElement
+ * @returns {HTMLSectionElement}
+ */
+ render: function WidgetAnnotationElement_render() {
+ var content = document.createElement('div');
+ content.textContent = this.data.fieldValue;
+ var textAlignment = this.data.textAlignment;
+ content.style.textAlign = ['left', 'center', 'right'][textAlignment];
+ content.style.verticalAlign = 'middle';
+ content.style.display = 'table-cell';
+
+ var font = (this.data.fontRefName ?
+ this.page.commonObjs.getData(this.data.fontRefName) : null);
+ this._setTextStyle(content, font);
+
+ this.container.appendChild(content);
+ return this.container;
+ },
+
+ /**
+ * Apply text styles to the text in the element.
+ *
+ * @private
+ * @param {HTMLDivElement} element
+ * @param {Object} font
+ * @memberof WidgetAnnotationElement
+ */
+ _setTextStyle:
+ function WidgetAnnotationElement_setTextStyle(element, font) {
+ // TODO: This duplicates some of the logic in CanvasGraphics.setFont().
+ var style = element.style;
+ style.fontSize = this.data.fontSize + 'px';
+ style.direction = (this.data.fontDirection < 0 ? 'rtl': 'ltr');
+
+ if (!font) {
+ return;
+ }
+
+ style.fontWeight = (font.black ?
+ (font.bold ? '900' : 'bold') :
+ (font.bold ? 'bold' : 'normal'));
+ style.fontStyle = (font.italic ? 'italic' : 'normal');
+
+ // Use a reasonable default font if the font doesn't specify a fallback.
+ var fontFamily = font.loadedName ? '"' + font.loadedName + '", ' : '';
+ var fallbackName = font.fallbackName || 'Helvetica, sans-serif';
+ style.fontFamily = fontFamily + fallbackName;
+ }
+ });
+
+ return WidgetAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias PopupAnnotationElement
+ */
+var PopupAnnotationElement = (function PopupAnnotationElementClosure() {
+ function PopupAnnotationElement(parameters) {
+ AnnotationElement.call(this, parameters);
+ }
+
+ Util.inherit(PopupAnnotationElement, AnnotationElement, {
+ /**
+ * Render the popup annotation's HTML element in the empty container.
+ *
+ * @public
+ * @memberof PopupAnnotationElement
+ * @returns {HTMLSectionElement}
+ */
+ render: function PopupAnnotationElement_render() {
+ this.container.className = 'popupAnnotation';
+
+ var selector = '[data-annotation-id="' + this.data.parentId + '"]';
+ var parentElement = this.layer.querySelector(selector);
+ if (!parentElement) {
+ return this.container;
+ }
+
+ var popup = new PopupElement({
+ container: this.container,
+ trigger: parentElement,
+ color: this.data.color,
+ title: this.data.title,
+ contents: this.data.contents
+ });
+
+ // Position the popup next to the parent annotation's container.
+ // PDF viewers ignore a popup annotation's rectangle.
+ var parentLeft = parseFloat(parentElement.style.left);
+ var parentWidth = parseFloat(parentElement.style.width);
+ CustomStyle.setProp('transformOrigin', this.container,
+ -(parentLeft + parentWidth) + 'px -' +
+ parentElement.style.top);
+ this.container.style.left = (parentLeft + parentWidth) + 'px';
+
+ this.container.appendChild(popup.render());
+ return this.container;
+ }
+ });
+
+ return PopupAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias PopupElement
+ */
+var PopupElement = (function PopupElementClosure() {
+ var BACKGROUND_ENLIGHT = 0.7;
+
+ function PopupElement(parameters) {
+ this.container = parameters.container;
+ this.trigger = parameters.trigger;
+ this.color = parameters.color;
+ this.title = parameters.title;
+ this.contents = parameters.contents;
+ this.hideWrapper = parameters.hideWrapper || false;
+
+ this.pinned = false;
+ }
+
+ PopupElement.prototype = /** @lends PopupElement.prototype */ {
+ /**
+ * Render the popup's HTML element.
+ *
+ * @public
+ * @memberof PopupElement
+ * @returns {HTMLSectionElement}
+ */
+ render: function PopupElement_render() {
+ var wrapper = document.createElement('div');
+ wrapper.className = 'popupWrapper';
+
+ // For Popup annotations we hide the entire section because it contains
+ // only the popup. However, for Text annotations without a separate Popup
+ // annotation, we cannot hide the entire container as the image would
+ // disappear too. In that special case, hiding the wrapper suffices.
+ this.hideElement = (this.hideWrapper ? wrapper : this.container);
+ this.hideElement.setAttribute('hidden', true);
+
+ var popup = document.createElement('div');
+ popup.className = 'popup';
+
+ var color = this.color;
+ if (color) {
+ // Enlighten the color.
+ var r = BACKGROUND_ENLIGHT * (255 - color[0]) + color[0];
+ var g = BACKGROUND_ENLIGHT * (255 - color[1]) + color[1];
+ var b = BACKGROUND_ENLIGHT * (255 - color[2]) + color[2];
+ popup.style.backgroundColor = Util.makeCssRgb(r | 0, g | 0, b | 0);
+ }
+
+ var contents = this._formatContents(this.contents);
+ var title = document.createElement('h1');
+ title.textContent = this.title;
+
+ // Attach the event listeners to the trigger element.
+ this.trigger.addEventListener('click', this._toggle.bind(this));
+ this.trigger.addEventListener('mouseover', this._show.bind(this, false));
+ this.trigger.addEventListener('mouseout', this._hide.bind(this, false));
+ popup.addEventListener('click', this._hide.bind(this, true));
+
+ popup.appendChild(title);
+ popup.appendChild(contents);
+ wrapper.appendChild(popup);
+ return wrapper;
+ },
+
+ /**
+ * Format the contents of the popup by adding newlines where necessary.
+ *
+ * @private
+ * @param {string} contents
+ * @memberof PopupElement
+ * @returns {HTMLParagraphElement}
+ */
+ _formatContents: function PopupElement_formatContents(contents) {
+ var p = document.createElement('p');
+ var lines = contents.split(/(?:\r\n?|\n)/);
+ for (var i = 0, ii = lines.length; i < ii; ++i) {
+ var line = lines[i];
+ p.appendChild(document.createTextNode(line));
+ if (i < (ii - 1)) {
+ p.appendChild(document.createElement('br'));
+ }
+ }
+ return p;
+ },
+
+ /**
+ * Toggle the visibility of the popup.
+ *
+ * @private
+ * @memberof PopupElement
+ */
+ _toggle: function PopupElement_toggle() {
+ if (this.pinned) {
+ this._hide(true);
+ } else {
+ this._show(true);
+ }
+ },
+
+ /**
+ * Show the popup.
+ *
+ * @private
+ * @param {boolean} pin
+ * @memberof PopupElement
+ */
+ _show: function PopupElement_show(pin) {
+ if (pin) {
+ this.pinned = true;
+ }
+ if (this.hideElement.hasAttribute('hidden')) {
+ this.hideElement.removeAttribute('hidden');
+ this.container.style.zIndex += 1;
+ }
+ },
+
+ /**
+ * Hide the popup.
+ *
+ * @private
+ * @param {boolean} unpin
+ * @memberof PopupElement
+ */
+ _hide: function PopupElement_hide(unpin) {
+ if (unpin) {
+ this.pinned = false;
+ }
+ if (!this.hideElement.hasAttribute('hidden') && !this.pinned) {
+ this.hideElement.setAttribute('hidden', true);
+ this.container.style.zIndex -= 1;
+ }
+ }
+ };
+
+ return PopupElement;
+})();
+
+/**
+ * @class
+ * @alias HighlightAnnotationElement
+ */
+var HighlightAnnotationElement = (
+ function HighlightAnnotationElementClosure() {
+ function HighlightAnnotationElement(parameters) {
+ AnnotationElement.call(this, parameters);
+ }
+
+ Util.inherit(HighlightAnnotationElement, AnnotationElement, {
+ /**
+ * Render the highlight annotation's HTML element in the empty container.
+ *
+ * @public
+ * @memberof HighlightAnnotationElement
+ * @returns {HTMLSectionElement}
+ */
+ render: function HighlightAnnotationElement_render() {
+ this.container.className = 'highlightAnnotation';
+ return this.container;
+ }
+ });
+
+ return HighlightAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias UnderlineAnnotationElement
+ */
+var UnderlineAnnotationElement = (
+ function UnderlineAnnotationElementClosure() {
+ function UnderlineAnnotationElement(parameters) {
+ AnnotationElement.call(this, parameters);
+ }
+
+ Util.inherit(UnderlineAnnotationElement, AnnotationElement, {
+ /**
+ * Render the underline annotation's HTML element in the empty container.
+ *
+ * @public
+ * @memberof UnderlineAnnotationElement
+ * @returns {HTMLSectionElement}
+ */
+ render: function UnderlineAnnotationElement_render() {
+ this.container.className = 'underlineAnnotation';
+ return this.container;
+ }
+ });
+
+ return UnderlineAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias SquigglyAnnotationElement
+ */
+var SquigglyAnnotationElement = (function SquigglyAnnotationElementClosure() {
+ function SquigglyAnnotationElement(parameters) {
+ AnnotationElement.call(this, parameters);
+ }
+
+ Util.inherit(SquigglyAnnotationElement, AnnotationElement, {
+ /**
+ * Render the squiggly annotation's HTML element in the empty container.
+ *
+ * @public
+ * @memberof SquigglyAnnotationElement
+ * @returns {HTMLSectionElement}
+ */
+ render: function SquigglyAnnotationElement_render() {
+ this.container.className = 'squigglyAnnotation';
+ return this.container;
+ }
+ });
+
+ return SquigglyAnnotationElement;
+})();
+
+/**
+ * @class
+ * @alias StrikeOutAnnotationElement
+ */
+var StrikeOutAnnotationElement = (
+ function StrikeOutAnnotationElementClosure() {
+ function StrikeOutAnnotationElement(parameters) {
+ AnnotationElement.call(this, parameters);
+ }
+
+ Util.inherit(StrikeOutAnnotationElement, AnnotationElement, {
+ /**
+ * Render the strikeout annotation's HTML element in the empty container.
+ *
+ * @public
+ * @memberof StrikeOutAnnotationElement
+ * @returns {HTMLSectionElement}
+ */
+ render: function StrikeOutAnnotationElement_render() {
+ this.container.className = 'strikeoutAnnotation';
+ return this.container;
+ }
+ });
+
+ return StrikeOutAnnotationElement;
+})();
+
+/**
+ * @typedef {Object} AnnotationLayerParameters
+ * @property {PageViewport} viewport
+ * @property {HTMLDivElement} div
+ * @property {Array} annotations
+ * @property {PDFPage} page
+ * @property {IPDFLinkService} linkService
+ */
+
+/**
+ * @class
+ * @alias AnnotationLayer
+ */
+var AnnotationLayer = (function AnnotationLayerClosure() {
+ return {
+ /**
+ * Render a new annotation layer with all annotation elements.
+ *
+ * @public
+ * @param {AnnotationLayerParameters} parameters
+ * @memberof AnnotationLayer
+ */
+ render: function AnnotationLayer_render(parameters) {
+ var annotationElementFactory = new AnnotationElementFactory();
+
+ for (var i = 0, ii = parameters.annotations.length; i < ii; i++) {
+ var data = parameters.annotations[i];
+ if (!data || !data.hasHtml) {
+ continue;
+ }
+
+ var properties = {
+ data: data,
+ layer: parameters.div,
+ page: parameters.page,
+ viewport: parameters.viewport,
+ linkService: parameters.linkService
+ };
+ var element = annotationElementFactory.create(properties);
+ parameters.div.appendChild(element.render());
+ }
+ },
+
+ /**
+ * Update the annotation elements on existing annotation layer.
+ *
+ * @public
+ * @param {AnnotationLayerParameters} parameters
+ * @memberof AnnotationLayer
+ */
+ update: function AnnotationLayer_update(parameters) {
+ for (var i = 0, ii = parameters.annotations.length; i < ii; i++) {
+ var data = parameters.annotations[i];
+ var element = parameters.div.querySelector(
+ '[data-annotation-id="' + data.id + '"]');
+ if (element) {
+ CustomStyle.setProp('transform', element,
+ 'matrix(' + parameters.viewport.transform.join(',') + ')');
+ }
+ }
+ parameters.div.removeAttribute('hidden');
+ }
+ };
+})();
+
+PDFJS.AnnotationLayer = AnnotationLayer;
+
+exports.AnnotationLayer = AnnotationLayer;
+}));
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsDisplayFontLoader = {}), root.pdfjsSharedUtil,
+ root.pdfjsSharedGlobal);
+ }
+}(this, function (exports, sharedUtil, sharedGlobal) {
+
+var assert = sharedUtil.assert;
+var bytesToString = sharedUtil.bytesToString;
+var string32 = sharedUtil.string32;
+var shadow = sharedUtil.shadow;
+var warn = sharedUtil.warn;
+
+var PDFJS = sharedGlobal.PDFJS;
+var globalScope = sharedGlobal.globalScope;
+var isWorker = sharedGlobal.isWorker;
+
+function FontLoader(docId) {
+ this.docId = docId;
+ this.styleElement = null;
+ this.nativeFontFaces = [];
+ this.loadTestFontId = 0;
+ this.loadingContext = {
+ requests: [],
+ nextRequestId: 0
+ };
+}
+FontLoader.prototype = {
+ insertRule: function fontLoaderInsertRule(rule) {
+ var styleElement = this.styleElement;
+ if (!styleElement) {
+ styleElement = this.styleElement = document.createElement('style');
+ styleElement.id = 'PDFJS_FONT_STYLE_TAG_' + this.docId;
+ document.documentElement.getElementsByTagName('head')[0].appendChild(
+ styleElement);
+ }
+
+ var styleSheet = styleElement.sheet;
+ styleSheet.insertRule(rule, styleSheet.cssRules.length);
+ },
+
+ clear: function fontLoaderClear() {
+ var styleElement = this.styleElement;
+ if (styleElement) {
+ styleElement.parentNode.removeChild(styleElement);
+ styleElement = this.styleElement = null;
+ }
+ this.nativeFontFaces.forEach(function(nativeFontFace) {
+ document.fonts.delete(nativeFontFace);
+ });
+ this.nativeFontFaces.length = 0;
+ },
+ get loadTestFont() {
+ // This is a CFF font with 1 glyph for '.' that fills its entire width and
+ // height.
+ return shadow(this, 'loadTestFont', atob(
+ 'T1RUTwALAIAAAwAwQ0ZGIDHtZg4AAAOYAAAAgUZGVE1lkzZwAAAEHAAAABxHREVGABQAFQ' +
+ 'AABDgAAAAeT1MvMlYNYwkAAAEgAAAAYGNtYXABDQLUAAACNAAAAUJoZWFk/xVFDQAAALwA' +
+ 'AAA2aGhlYQdkA+oAAAD0AAAAJGhtdHgD6AAAAAAEWAAAAAZtYXhwAAJQAAAAARgAAAAGbm' +
+ 'FtZVjmdH4AAAGAAAAAsXBvc3T/hgAzAAADeAAAACAAAQAAAAEAALZRFsRfDzz1AAsD6AAA' +
+ 'AADOBOTLAAAAAM4KHDwAAAAAA+gDIQAAAAgAAgAAAAAAAAABAAADIQAAAFoD6AAAAAAD6A' +
+ 'ABAAAAAAAAAAAAAAAAAAAAAQAAUAAAAgAAAAQD6AH0AAUAAAKKArwAAACMAooCvAAAAeAA' +
+ 'MQECAAACAAYJAAAAAAAAAAAAAQAAAAAAAAAAAAAAAFBmRWQAwAAuAC4DIP84AFoDIQAAAA' +
+ 'AAAQAAAAAAAAAAACAAIAABAAAADgCuAAEAAAAAAAAAAQAAAAEAAAAAAAEAAQAAAAEAAAAA' +
+ 'AAIAAQAAAAEAAAAAAAMAAQAAAAEAAAAAAAQAAQAAAAEAAAAAAAUAAQAAAAEAAAAAAAYAAQ' +
+ 'AAAAMAAQQJAAAAAgABAAMAAQQJAAEAAgABAAMAAQQJAAIAAgABAAMAAQQJAAMAAgABAAMA' +
+ 'AQQJAAQAAgABAAMAAQQJAAUAAgABAAMAAQQJAAYAAgABWABYAAAAAAAAAwAAAAMAAAAcAA' +
+ 'EAAAAAADwAAwABAAAAHAAEACAAAAAEAAQAAQAAAC7//wAAAC7////TAAEAAAAAAAABBgAA' +
+ 'AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAA' +
+ 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
+ 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
+ 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
+ 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAA' +
+ 'AAAAD/gwAyAAAAAQAAAAAAAAAAAAAAAAAAAAABAAQEAAEBAQJYAAEBASH4DwD4GwHEAvgc' +
+ 'A/gXBIwMAYuL+nz5tQXkD5j3CBLnEQACAQEBIVhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWF' +
+ 'hYWFhYWFhYAAABAQAADwACAQEEE/t3Dov6fAH6fAT+fPp8+nwHDosMCvm1Cvm1DAz6fBQA' +
+ 'AAAAAAABAAAAAMmJbzEAAAAAzgTjFQAAAADOBOQpAAEAAAAAAAAADAAUAAQAAAABAAAAAg' +
+ 'ABAAAAAAAAAAAD6AAAAAAAAA=='
+ ));
+ },
+
+ addNativeFontFace: function fontLoader_addNativeFontFace(nativeFontFace) {
+ this.nativeFontFaces.push(nativeFontFace);
+ document.fonts.add(nativeFontFace);
+ },
+
+ bind: function fontLoaderBind(fonts, callback) {
+ assert(!isWorker, 'bind() shall be called from main thread');
+
+ var rules = [];
+ var fontsToLoad = [];
+ var fontLoadPromises = [];
+ var getNativeFontPromise = function(nativeFontFace) {
+ // Return a promise that is always fulfilled, even when the font fails to
+ // load.
+ return nativeFontFace.loaded.catch(function(e) {
+ warn('Failed to load font "' + nativeFontFace.family + '": ' + e);
+ });
+ };
+ for (var i = 0, ii = fonts.length; i < ii; i++) {
+ var font = fonts[i];
+
+ // Add the font to the DOM only once or skip if the font
+ // is already loaded.
+ if (font.attached || font.loading === false) {
+ continue;
+ }
+ font.attached = true;
+
+ if (FontLoader.isFontLoadingAPISupported) {
+ var nativeFontFace = font.createNativeFontFace();
+ if (nativeFontFace) {
+ this.addNativeFontFace(nativeFontFace);
+ fontLoadPromises.push(getNativeFontPromise(nativeFontFace));
+ }
+ } else {
+ var rule = font.createFontFaceRule();
+ if (rule) {
+ this.insertRule(rule);
+ rules.push(rule);
+ fontsToLoad.push(font);
+ }
+ }
+ }
+
+ var request = this.queueLoadingCallback(callback);
+ if (FontLoader.isFontLoadingAPISupported) {
+ Promise.all(fontLoadPromises).then(function() {
+ request.complete();
+ });
+ } else if (rules.length > 0 && !FontLoader.isSyncFontLoadingSupported) {
+ this.prepareFontLoadEvent(rules, fontsToLoad, request);
+ } else {
+ request.complete();
+ }
+ },
+
+ queueLoadingCallback: function FontLoader_queueLoadingCallback(callback) {
+ function LoadLoader_completeRequest() {
+ assert(!request.end, 'completeRequest() cannot be called twice');
+ request.end = Date.now();
+
+ // sending all completed requests in order how they were queued
+ while (context.requests.length > 0 && context.requests[0].end) {
+ var otherRequest = context.requests.shift();
+ setTimeout(otherRequest.callback, 0);
+ }
+ }
+
+ var context = this.loadingContext;
+ var requestId = 'pdfjs-font-loading-' + (context.nextRequestId++);
+ var request = {
+ id: requestId,
+ complete: LoadLoader_completeRequest,
+ callback: callback,
+ started: Date.now()
+ };
+ context.requests.push(request);
+ return request;
+ },
+
+ prepareFontLoadEvent: function fontLoaderPrepareFontLoadEvent(rules,
+ fonts,
+ request) {
+ /** Hack begin */
+ // There's currently no event when a font has finished downloading so the
+ // following code is a dirty hack to 'guess' when a font is
+ // ready. It's assumed fonts are loaded in order, so add a known test
+ // font after the desired fonts and then test for the loading of that
+ // test font.
+
+ function int32(data, offset) {
+ return (data.charCodeAt(offset) << 24) |
+ (data.charCodeAt(offset + 1) << 16) |
+ (data.charCodeAt(offset + 2) << 8) |
+ (data.charCodeAt(offset + 3) & 0xff);
+ }
+
+ function spliceString(s, offset, remove, insert) {
+ var chunk1 = s.substr(0, offset);
+ var chunk2 = s.substr(offset + remove);
+ return chunk1 + insert + chunk2;
+ }
+
+ var i, ii;
+
+ var canvas = document.createElement('canvas');
+ canvas.width = 1;
+ canvas.height = 1;
+ var ctx = canvas.getContext('2d');
+
+ var called = 0;
+ function isFontReady(name, callback) {
+ called++;
+ // With setTimeout clamping this gives the font ~100ms to load.
+ if(called > 30) {
+ warn('Load test font never loaded.');
+ callback();
+ return;
+ }
+ ctx.font = '30px ' + name;
+ ctx.fillText('.', 0, 20);
+ var imageData = ctx.getImageData(0, 0, 1, 1);
+ if (imageData.data[3] > 0) {
+ callback();
+ return;
+ }
+ setTimeout(isFontReady.bind(null, name, callback));
+ }
+
+ var loadTestFontId = 'lt' + Date.now() + this.loadTestFontId++;
+ // Chromium seems to cache fonts based on a hash of the actual font data,
+ // so the font must be modified for each load test else it will appear to
+ // be loaded already.
+ // TODO: This could maybe be made faster by avoiding the btoa of the full
+ // font by splitting it in chunks before hand and padding the font id.
+ var data = this.loadTestFont;
+ var COMMENT_OFFSET = 976; // has to be on 4 byte boundary (for checksum)
+ data = spliceString(data, COMMENT_OFFSET, loadTestFontId.length,
+ loadTestFontId);
+ // CFF checksum is important for IE, adjusting it
+ var CFF_CHECKSUM_OFFSET = 16;
+ var XXXX_VALUE = 0x58585858; // the "comment" filled with 'X'
+ var checksum = int32(data, CFF_CHECKSUM_OFFSET);
+ for (i = 0, ii = loadTestFontId.length - 3; i < ii; i += 4) {
+ checksum = (checksum - XXXX_VALUE + int32(loadTestFontId, i)) | 0;
+ }
+ if (i < loadTestFontId.length) { // align to 4 bytes boundary
+ checksum = (checksum - XXXX_VALUE +
+ int32(loadTestFontId + 'XXX', i)) | 0;
+ }
+ data = spliceString(data, CFF_CHECKSUM_OFFSET, 4, string32(checksum));
+
+ var url = 'url(data:font/opentype;base64,' + btoa(data) + ');';
+ var rule = '@font-face { font-family:"' + loadTestFontId + '";src:' +
+ url + '}';
+ this.insertRule(rule);
+
+ var names = [];
+ for (i = 0, ii = fonts.length; i < ii; i++) {
+ names.push(fonts[i].loadedName);
+ }
+ names.push(loadTestFontId);
+
+ var div = document.createElement('div');
+ div.setAttribute('style',
+ 'visibility: hidden;' +
+ 'width: 10px; height: 10px;' +
+ 'position: absolute; top: 0px; left: 0px;');
+ for (i = 0, ii = names.length; i < ii; ++i) {
+ var span = document.createElement('span');
+ span.textContent = 'Hi';
+ span.style.fontFamily = names[i];
+ div.appendChild(span);
+ }
+ document.body.appendChild(div);
+
+ isFontReady(loadTestFontId, function() {
+ document.body.removeChild(div);
+ request.complete();
+ });
+ /** Hack end */
+ }
+};
+FontLoader.isFontLoadingAPISupported = (!isWorker &&
+ typeof document !== 'undefined' && !!document.fonts);
+Object.defineProperty(FontLoader, 'isSyncFontLoadingSupported', {
+ get: function () {
+ var supported = false;
+
+ // User agent string sniffing is bad, but there is no reliable way to tell
+ // if font is fully loaded and ready to be used with canvas.
+ var userAgent = window.navigator.userAgent;
+ var m = /Mozilla\/5.0.*?rv:(\d+).*? Gecko/.exec(userAgent);
+ if (m && m[1] >= 14) {
+ supported = true;
+ }
+ // TODO other browsers
+ if (userAgent === 'node') {
+ supported = true;
+ }
+ return shadow(FontLoader, 'isSyncFontLoadingSupported', supported);
+ },
+ enumerable: true,
+ configurable: true
+});
+
+var FontFaceObject = (function FontFaceObjectClosure() {
+ function FontFaceObject(translatedData) {
+ this.compiledGlyphs = {};
+ // importing translated data
+ for (var i in translatedData) {
+ this[i] = translatedData[i];
+ }
+ }
+ Object.defineProperty(FontFaceObject, 'isEvalSupported', {
+ get: function () {
+ var evalSupport = false;
+ if (PDFJS.isEvalSupported) {
+ try {
+ /* jshint evil: true */
+ new Function('');
+ evalSupport = true;
+ } catch (e) {}
+ }
+ return shadow(this, 'isEvalSupported', evalSupport);
+ },
+ enumerable: true,
+ configurable: true
+ });
+ FontFaceObject.prototype = {
+ createNativeFontFace: function FontFaceObject_createNativeFontFace() {
+ if (!this.data) {
+ return null;
+ }
+
+ if (PDFJS.disableFontFace) {
+ this.disableFontFace = true;
+ return null;
+ }
+
+ var nativeFontFace = new FontFace(this.loadedName, this.data, {});
+
+ if (PDFJS.pdfBug && 'FontInspector' in globalScope &&
+ globalScope['FontInspector'].enabled) {
+ globalScope['FontInspector'].fontAdded(this);
+ }
+ return nativeFontFace;
+ },
+
+ createFontFaceRule: function FontFaceObject_createFontFaceRule() {
+ if (!this.data) {
+ return null;
+ }
+
+ if (PDFJS.disableFontFace) {
+ this.disableFontFace = true;
+ return null;
+ }
+
+ var data = bytesToString(new Uint8Array(this.data));
+ var fontName = this.loadedName;
+
+ // Add the font-face rule to the document
+ var url = ('url(data:' + this.mimetype + ';base64,' +
+ window.btoa(data) + ');');
+ var rule = '@font-face { font-family:"' + fontName + '";src:' + url + '}';
+
+ if (PDFJS.pdfBug && 'FontInspector' in globalScope &&
+ globalScope['FontInspector'].enabled) {
+ globalScope['FontInspector'].fontAdded(this, url);
+ }
+
+ return rule;
+ },
+
+ getPathGenerator:
+ function FontFaceObject_getPathGenerator(objs, character) {
+ if (!(character in this.compiledGlyphs)) {
+ var cmds = objs.get(this.loadedName + '_path_' + character);
+ var current, i, len;
+
+ // If we can, compile cmds into JS for MAXIMUM SPEED
+ if (FontFaceObject.isEvalSupported) {
+ var args, js = '';
+ for (i = 0, len = cmds.length; i < len; i++) {
+ current = cmds[i];
+
+ if (current.args !== undefined) {
+ args = current.args.join(',');
+ } else {
+ args = '';
+ }
+
+ js += 'c.' + current.cmd + '(' + args + ');\n';
+ }
+ /* jshint -W054 */
+ this.compiledGlyphs[character] = new Function('c', 'size', js);
+ } else {
+ // But fall back on using Function.prototype.apply() if we're
+ // blocked from using eval() for whatever reason (like CSP policies)
+ this.compiledGlyphs[character] = function(c, size) {
+ for (i = 0, len = cmds.length; i < len; i++) {
+ current = cmds[i];
+
+ if (current.cmd === 'scale') {
+ current.args = [size, -size];
+ }
+
+ c[current.cmd].apply(c, current.args);
+ }
+ };
+ }
+ }
+ return this.compiledGlyphs[character];
+ }
+ };
+ return FontFaceObject;
+})();
+
+exports.FontFaceObject = FontFaceObject;
+exports.FontLoader = FontLoader;
+}));
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsDisplayMetadata = {}), root.pdfjsSharedUtil);
+ }
+}(this, function (exports, sharedUtil) {
+
+var error = sharedUtil.error;
+
+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;
+})();
+
+exports.Metadata = Metadata;
+}));
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsDisplaySVG = {}), root.pdfjsSharedUtil);
+ }
+}(this, function (exports, sharedUtil) {
+
+var FONT_IDENTITY_MATRIX = sharedUtil.FONT_IDENTITY_MATRIX;
+var IDENTITY_MATRIX = sharedUtil.IDENTITY_MATRIX;
+var ImageKind = sharedUtil.ImageKind;
+var OPS = sharedUtil.OPS;
+var Util = sharedUtil.Util;
+var isNum = sharedUtil.isNum;
+var isArray = sharedUtil.isArray;
+var warn = sharedUtil.warn;
+
+var SVG_DEFAULTS = {
+ fontStyle: 'normal',
+ fontWeight: 'normal',
+ fillColor: '#000000'
+};
+
+var convertImgDataToPng = (function convertImgDataToPngClosure() {
+ var PNG_HEADER =
+ new Uint8Array([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]);
+
+ var CHUNK_WRAPPER_SIZE = 12;
+
+ var crcTable = new Int32Array(256);
+ for (var i = 0; i < 256; i++) {
+ var c = i;
+ for (var h = 0; h < 8; h++) {
+ if (c & 1) {
+ c = 0xedB88320 ^ ((c >> 1) & 0x7fffffff);
+ } else {
+ c = (c >> 1) & 0x7fffffff;
+ }
+ }
+ crcTable[i] = c;
+ }
+
+ function crc32(data, start, end) {
+ var crc = -1;
+ for (var i = start; i < end; i++) {
+ var a = (crc ^ data[i]) & 0xff;
+ var b = crcTable[a];
+ crc = (crc >>> 8) ^ b;
+ }
+ return crc ^ -1;
+ }
+
+ function writePngChunk(type, body, data, offset) {
+ var p = offset;
+ var len = body.length;
+
+ data[p] = len >> 24 & 0xff;
+ data[p + 1] = len >> 16 & 0xff;
+ data[p + 2] = len >> 8 & 0xff;
+ data[p + 3] = len & 0xff;
+ p += 4;
+
+ data[p] = type.charCodeAt(0) & 0xff;
+ data[p + 1] = type.charCodeAt(1) & 0xff;
+ data[p + 2] = type.charCodeAt(2) & 0xff;
+ data[p + 3] = type.charCodeAt(3) & 0xff;
+ p += 4;
+
+ data.set(body, p);
+ p += body.length;
+
+ var crc = crc32(data, offset + 4, p);
+
+ data[p] = crc >> 24 & 0xff;
+ data[p + 1] = crc >> 16 & 0xff;
+ data[p + 2] = crc >> 8 & 0xff;
+ data[p + 3] = crc & 0xff;
+ }
+
+ function adler32(data, start, end) {
+ var a = 1;
+ var b = 0;
+ for (var i = start; i < end; ++i) {
+ a = (a + (data[i] & 0xff)) % 65521;
+ b = (b + a) % 65521;
+ }
+ return (b << 16) | a;
+ }
+
+ function encode(imgData, kind) {
+ var width = imgData.width;
+ var height = imgData.height;
+ var bitDepth, colorType, lineSize;
+ var bytes = imgData.data;
+
+ switch (kind) {
+ case ImageKind.GRAYSCALE_1BPP:
+ colorType = 0;
+ bitDepth = 1;
+ lineSize = (width + 7) >> 3;
+ break;
+ case ImageKind.RGB_24BPP:
+ colorType = 2;
+ bitDepth = 8;
+ lineSize = width * 3;
+ break;
+ case ImageKind.RGBA_32BPP:
+ colorType = 6;
+ bitDepth = 8;
+ lineSize = width * 4;
+ break;
+ default:
+ throw new Error('invalid format');
+ }
+
+ // prefix every row with predictor 0
+ var literals = new Uint8Array((1 + lineSize) * height);
+ var offsetLiterals = 0, offsetBytes = 0;
+ var y, i;
+ for (y = 0; y < height; ++y) {
+ literals[offsetLiterals++] = 0; // no prediction
+ literals.set(bytes.subarray(offsetBytes, offsetBytes + lineSize),
+ offsetLiterals);
+ offsetBytes += lineSize;
+ offsetLiterals += lineSize;
+ }
+
+ if (kind === ImageKind.GRAYSCALE_1BPP) {
+ // inverting for B/W
+ offsetLiterals = 0;
+ for (y = 0; y < height; y++) {
+ offsetLiterals++; // skipping predictor
+ for (i = 0; i < lineSize; i++) {
+ literals[offsetLiterals++] ^= 0xFF;
+ }
+ }
+ }
+
+ var ihdr = new Uint8Array([
+ width >> 24 & 0xff,
+ width >> 16 & 0xff,
+ width >> 8 & 0xff,
+ width & 0xff,
+ height >> 24 & 0xff,
+ height >> 16 & 0xff,
+ height >> 8 & 0xff,
+ height & 0xff,
+ bitDepth, // bit depth
+ colorType, // color type
+ 0x00, // compression method
+ 0x00, // filter method
+ 0x00 // interlace method
+ ]);
+
+ var len = literals.length;
+ var maxBlockLength = 0xFFFF;
+
+ var deflateBlocks = Math.ceil(len / maxBlockLength);
+ var idat = new Uint8Array(2 + len + deflateBlocks * 5 + 4);
+ var pi = 0;
+ idat[pi++] = 0x78; // compression method and flags
+ idat[pi++] = 0x9c; // flags
+
+ var pos = 0;
+ while (len > maxBlockLength) {
+ // writing non-final DEFLATE blocks type 0 and length of 65535
+ idat[pi++] = 0x00;
+ idat[pi++] = 0xff;
+ idat[pi++] = 0xff;
+ idat[pi++] = 0x00;
+ idat[pi++] = 0x00;
+ idat.set(literals.subarray(pos, pos + maxBlockLength), pi);
+ pi += maxBlockLength;
+ pos += maxBlockLength;
+ len -= maxBlockLength;
+ }
+
+ // writing non-final DEFLATE blocks type 0
+ idat[pi++] = 0x01;
+ idat[pi++] = len & 0xff;
+ idat[pi++] = len >> 8 & 0xff;
+ idat[pi++] = (~len & 0xffff) & 0xff;
+ idat[pi++] = (~len & 0xffff) >> 8 & 0xff;
+ idat.set(literals.subarray(pos), pi);
+ pi += literals.length - pos;
+
+ var adler = adler32(literals, 0, literals.length); // checksum
+ idat[pi++] = adler >> 24 & 0xff;
+ idat[pi++] = adler >> 16 & 0xff;
+ idat[pi++] = adler >> 8 & 0xff;
+ idat[pi++] = adler & 0xff;
+
+ // PNG will consists: header, IHDR+data, IDAT+data, and IEND.
+ var pngLength = PNG_HEADER.length + (CHUNK_WRAPPER_SIZE * 3) +
+ ihdr.length + idat.length;
+ var data = new Uint8Array(pngLength);
+ var offset = 0;
+ data.set(PNG_HEADER, offset);
+ offset += PNG_HEADER.length;
+ writePngChunk('IHDR', ihdr, data, offset);
+ offset += CHUNK_WRAPPER_SIZE + ihdr.length;
+ writePngChunk('IDATA', idat, data, offset);
+ offset += CHUNK_WRAPPER_SIZE + idat.length;
+ writePngChunk('IEND', new Uint8Array(0), data, offset);
+
+ return PDFJS.createObjectURL(data, 'image/png');
+ }
+
+ return function convertImgDataToPng(imgData) {
+ var kind = (imgData.kind === undefined ?
+ ImageKind.GRAYSCALE_1BPP : imgData.kind);
+ return encode(imgData, kind);
+ };
+})();
+
+var SVGExtraState = (function SVGExtraStateClosure() {
+ function SVGExtraState() {
+ this.fontSizeScale = 1;
+ this.fontWeight = SVG_DEFAULTS.fontWeight;
+ this.fontSize = 0;
+
+ this.textMatrix = IDENTITY_MATRIX;
+ this.fontMatrix = FONT_IDENTITY_MATRIX;
+ this.leading = 0;
+
+ // Current point (in user coordinates)
+ this.x = 0;
+ this.y = 0;
+
+ // Start of text line (in text coordinates)
+ this.lineX = 0;
+ this.lineY = 0;
+
+ // Character and word spacing
+ this.charSpacing = 0;
+ this.wordSpacing = 0;
+ this.textHScale = 1;
+ this.textRise = 0;
+
+ // Default foreground and background colors
+ this.fillColor = SVG_DEFAULTS.fillColor;
+ this.strokeColor = '#000000';
+
+ this.fillAlpha = 1;
+ this.strokeAlpha = 1;
+ this.lineWidth = 1;
+ this.lineJoin = '';
+ this.lineCap = '';
+ this.miterLimit = 0;
+
+ this.dashArray = [];
+ this.dashPhase = 0;
+
+ this.dependencies = [];
+
+ // Clipping
+ this.clipId = '';
+ this.pendingClip = false;
+
+ this.maskId = '';
+ }
+
+ SVGExtraState.prototype = {
+ clone: function SVGExtraState_clone() {
+ return Object.create(this);
+ },
+ setCurrentPoint: function SVGExtraState_setCurrentPoint(x, y) {
+ this.x = x;
+ this.y = y;
+ }
+ };
+ return SVGExtraState;
+})();
+
+var SVGGraphics = (function SVGGraphicsClosure() {
+ function createScratchSVG(width, height) {
+ var NS = 'http://www.w3.org/2000/svg';
+ var svg = document.createElementNS(NS, 'svg:svg');
+ svg.setAttributeNS(null, 'version', '1.1');
+ svg.setAttributeNS(null, 'width', width + 'px');
+ svg.setAttributeNS(null, 'height', height + 'px');
+ svg.setAttributeNS(null, 'viewBox', '0 0 ' + width + ' ' + height);
+ return svg;
+ }
+
+ function opListToTree(opList) {
+ var opTree = [];
+ var tmp = [];
+ var opListLen = opList.length;
+
+ for (var x = 0; x < opListLen; x++) {
+ if (opList[x].fn === 'save') {
+ opTree.push({'fnId': 92, 'fn': 'group', 'items': []});
+ tmp.push(opTree);
+ opTree = opTree[opTree.length - 1].items;
+ continue;
+ }
+
+ if(opList[x].fn === 'restore') {
+ opTree = tmp.pop();
+ } else {
+ opTree.push(opList[x]);
+ }
+ }
+ return opTree;
+ }
+
+ /**
+ * Formats float number.
+ * @param value {number} number to format.
+ * @returns {string}
+ */
+ function pf(value) {
+ if (value === (value | 0)) { // integer number
+ return value.toString();
+ }
+ var s = value.toFixed(10);
+ var i = s.length - 1;
+ if (s[i] !== '0') {
+ return s;
+ }
+ // removing trailing zeros
+ do {
+ i--;
+ } while (s[i] === '0');
+ return s.substr(0, s[i] === '.' ? i : i + 1);
+ }
+
+ /**
+ * Formats transform matrix. The standard rotation, scale and translate
+ * matrices are replaced by their shorter forms, and for identity matrix
+ * returns empty string to save the memory.
+ * @param m {Array} matrix to format.
+ * @returns {string}
+ */
+ function pm(m) {
+ if (m[4] === 0 && m[5] === 0) {
+ if (m[1] === 0 && m[2] === 0) {
+ if (m[0] === 1 && m[3] === 1) {
+ return '';
+ }
+ return 'scale(' + pf(m[0]) + ' ' + pf(m[3]) + ')';
+ }
+ if (m[0] === m[3] && m[1] === -m[2]) {
+ var a = Math.acos(m[0]) * 180 / Math.PI;
+ return 'rotate(' + pf(a) + ')';
+ }
+ } else {
+ if (m[0] === 1 && m[1] === 0 && m[2] === 0 && m[3] === 1) {
+ return 'translate(' + pf(m[4]) + ' ' + pf(m[5]) + ')';
+ }
+ }
+ return 'matrix(' + pf(m[0]) + ' ' + pf(m[1]) + ' ' + pf(m[2]) + ' ' +
+ pf(m[3]) + ' ' + pf(m[4]) + ' ' + pf(m[5]) + ')';
+ }
+
+ function SVGGraphics(commonObjs, objs) {
+ this.current = new SVGExtraState();
+ this.transformMatrix = IDENTITY_MATRIX; // Graphics state matrix
+ this.transformStack = [];
+ this.extraStack = [];
+ this.commonObjs = commonObjs;
+ this.objs = objs;
+ this.pendingEOFill = false;
+
+ this.embedFonts = false;
+ this.embeddedFonts = {};
+ this.cssStyle = null;
+ }
+
+ var NS = 'http://www.w3.org/2000/svg';
+ var XML_NS = 'http://www.w3.org/XML/1998/namespace';
+ var XLINK_NS = 'http://www.w3.org/1999/xlink';
+ var LINE_CAP_STYLES = ['butt', 'round', 'square'];
+ var LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];
+ var clipCount = 0;
+ var maskCount = 0;
+
+ SVGGraphics.prototype = {
+ save: function SVGGraphics_save() {
+ this.transformStack.push(this.transformMatrix);
+ var old = this.current;
+ this.extraStack.push(old);
+ this.current = old.clone();
+ },
+
+ restore: function SVGGraphics_restore() {
+ this.transformMatrix = this.transformStack.pop();
+ this.current = this.extraStack.pop();
+
+ this.tgrp = document.createElementNS(NS, 'svg:g');
+ this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+ this.pgrp.appendChild(this.tgrp);
+ },
+
+ group: function SVGGraphics_group(items) {
+ this.save();
+ this.executeOpTree(items);
+ this.restore();
+ },
+
+ loadDependencies: function SVGGraphics_loadDependencies(operatorList) {
+ var fnArray = operatorList.fnArray;
+ var fnArrayLen = fnArray.length;
+ var argsArray = operatorList.argsArray;
+
+ var self = this;
+ for (var i = 0; i < fnArrayLen; i++) {
+ if (OPS.dependency === fnArray[i]) {
+ var deps = argsArray[i];
+ for (var n = 0, nn = deps.length; n < nn; n++) {
+ var obj = deps[n];
+ var common = obj.substring(0, 2) === 'g_';
+ var promise;
+ if (common) {
+ promise = new Promise(function(resolve) {
+ self.commonObjs.get(obj, resolve);
+ });
+ } else {
+ promise = new Promise(function(resolve) {
+ self.objs.get(obj, resolve);
+ });
+ }
+ this.current.dependencies.push(promise);
+ }
+ }
+ }
+ return Promise.all(this.current.dependencies);
+ },
+
+ transform: function SVGGraphics_transform(a, b, c, d, e, f) {
+ var transformMatrix = [a, b, c, d, e, f];
+ this.transformMatrix = PDFJS.Util.transform(this.transformMatrix,
+ transformMatrix);
+
+ this.tgrp = document.createElementNS(NS, 'svg:g');
+ this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+ },
+
+ getSVG: function SVGGraphics_getSVG(operatorList, viewport) {
+ this.svg = createScratchSVG(viewport.width, viewport.height);
+ this.viewport = viewport;
+
+ return this.loadDependencies(operatorList).then(function () {
+ this.transformMatrix = IDENTITY_MATRIX;
+ this.pgrp = document.createElementNS(NS, 'svg:g'); // Parent group
+ this.pgrp.setAttributeNS(null, 'transform', pm(viewport.transform));
+ this.tgrp = document.createElementNS(NS, 'svg:g'); // Transform group
+ this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+ this.defs = document.createElementNS(NS, 'svg:defs');
+ this.pgrp.appendChild(this.defs);
+ this.pgrp.appendChild(this.tgrp);
+ this.svg.appendChild(this.pgrp);
+ var opTree = this.convertOpList(operatorList);
+ this.executeOpTree(opTree);
+ return this.svg;
+ }.bind(this));
+ },
+
+ convertOpList: function SVGGraphics_convertOpList(operatorList) {
+ var argsArray = operatorList.argsArray;
+ var fnArray = operatorList.fnArray;
+ var fnArrayLen = fnArray.length;
+ var REVOPS = [];
+ var opList = [];
+
+ for (var op in OPS) {
+ REVOPS[OPS[op]] = op;
+ }
+
+ for (var x = 0; x < fnArrayLen; x++) {
+ var fnId = fnArray[x];
+ opList.push({'fnId' : fnId, 'fn': REVOPS[fnId], 'args': argsArray[x]});
+ }
+ return opListToTree(opList);
+ },
+
+ executeOpTree: function SVGGraphics_executeOpTree(opTree) {
+ var opTreeLen = opTree.length;
+ for(var x = 0; x < opTreeLen; x++) {
+ var fn = opTree[x].fn;
+ var fnId = opTree[x].fnId;
+ var args = opTree[x].args;
+
+ switch (fnId | 0) {
+ case OPS.beginText:
+ this.beginText();
+ break;
+ case OPS.setLeading:
+ this.setLeading(args);
+ break;
+ case OPS.setLeadingMoveText:
+ this.setLeadingMoveText(args[0], args[1]);
+ break;
+ case OPS.setFont:
+ this.setFont(args);
+ break;
+ case OPS.showText:
+ this.showText(args[0]);
+ break;
+ case OPS.showSpacedText:
+ this.showText(args[0]);
+ break;
+ case OPS.endText:
+ this.endText();
+ break;
+ case OPS.moveText:
+ this.moveText(args[0], args[1]);
+ break;
+ case OPS.setCharSpacing:
+ this.setCharSpacing(args[0]);
+ break;
+ case OPS.setWordSpacing:
+ this.setWordSpacing(args[0]);
+ break;
+ case OPS.setHScale:
+ this.setHScale(args[0]);
+ break;
+ case OPS.setTextMatrix:
+ this.setTextMatrix(args[0], args[1], args[2],
+ args[3], args[4], args[5]);
+ break;
+ case OPS.setLineWidth:
+ this.setLineWidth(args[0]);
+ break;
+ case OPS.setLineJoin:
+ this.setLineJoin(args[0]);
+ break;
+ case OPS.setLineCap:
+ this.setLineCap(args[0]);
+ break;
+ case OPS.setMiterLimit:
+ this.setMiterLimit(args[0]);
+ break;
+ case OPS.setFillRGBColor:
+ this.setFillRGBColor(args[0], args[1], args[2]);
+ break;
+ case OPS.setStrokeRGBColor:
+ this.setStrokeRGBColor(args[0], args[1], args[2]);
+ break;
+ case OPS.setDash:
+ this.setDash(args[0], args[1]);
+ break;
+ case OPS.setGState:
+ this.setGState(args[0]);
+ break;
+ case OPS.fill:
+ this.fill();
+ break;
+ case OPS.eoFill:
+ this.eoFill();
+ break;
+ case OPS.stroke:
+ this.stroke();
+ break;
+ case OPS.fillStroke:
+ this.fillStroke();
+ break;
+ case OPS.eoFillStroke:
+ this.eoFillStroke();
+ break;
+ case OPS.clip:
+ this.clip('nonzero');
+ break;
+ case OPS.eoClip:
+ this.clip('evenodd');
+ break;
+ case OPS.paintSolidColorImageMask:
+ this.paintSolidColorImageMask();
+ break;
+ case OPS.paintJpegXObject:
+ this.paintJpegXObject(args[0], args[1], args[2]);
+ break;
+ case OPS.paintImageXObject:
+ this.paintImageXObject(args[0]);
+ break;
+ case OPS.paintInlineImageXObject:
+ this.paintInlineImageXObject(args[0]);
+ break;
+ case OPS.paintImageMaskXObject:
+ this.paintImageMaskXObject(args[0]);
+ break;
+ case OPS.paintFormXObjectBegin:
+ this.paintFormXObjectBegin(args[0], args[1]);
+ break;
+ case OPS.paintFormXObjectEnd:
+ this.paintFormXObjectEnd();
+ break;
+ case OPS.closePath:
+ this.closePath();
+ break;
+ case OPS.closeStroke:
+ this.closeStroke();
+ break;
+ case OPS.closeFillStroke:
+ this.closeFillStroke();
+ break;
+ case OPS.nextLine:
+ this.nextLine();
+ break;
+ case OPS.transform:
+ this.transform(args[0], args[1], args[2], args[3],
+ args[4], args[5]);
+ break;
+ case OPS.constructPath:
+ this.constructPath(args[0], args[1]);
+ break;
+ case OPS.endPath:
+ this.endPath();
+ break;
+ case 92:
+ this.group(opTree[x].items);
+ break;
+ default:
+ warn('Unimplemented method '+ fn);
+ break;
+ }
+ }
+ },
+
+ setWordSpacing: function SVGGraphics_setWordSpacing(wordSpacing) {
+ this.current.wordSpacing = wordSpacing;
+ },
+
+ setCharSpacing: function SVGGraphics_setCharSpacing(charSpacing) {
+ this.current.charSpacing = charSpacing;
+ },
+
+ nextLine: function SVGGraphics_nextLine() {
+ this.moveText(0, this.current.leading);
+ },
+
+ setTextMatrix: function SVGGraphics_setTextMatrix(a, b, c, d, e, f) {
+ var current = this.current;
+ this.current.textMatrix = this.current.lineMatrix = [a, b, c, d, e, f];
+
+ this.current.x = this.current.lineX = 0;
+ this.current.y = this.current.lineY = 0;
+
+ current.xcoords = [];
+ current.tspan = document.createElementNS(NS, 'svg:tspan');
+ current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
+ current.tspan.setAttributeNS(null, 'font-size',
+ pf(current.fontSize) + 'px');
+ current.tspan.setAttributeNS(null, 'y', pf(-current.y));
+
+ current.txtElement = document.createElementNS(NS, 'svg:text');
+ current.txtElement.appendChild(current.tspan);
+ },
+
+ beginText: function SVGGraphics_beginText() {
+ this.current.x = this.current.lineX = 0;
+ this.current.y = this.current.lineY = 0;
+ this.current.textMatrix = IDENTITY_MATRIX;
+ this.current.lineMatrix = IDENTITY_MATRIX;
+ this.current.tspan = document.createElementNS(NS, 'svg:tspan');
+ this.current.txtElement = document.createElementNS(NS, 'svg:text');
+ this.current.txtgrp = document.createElementNS(NS, 'svg:g');
+ this.current.xcoords = [];
+ },
+
+ moveText: function SVGGraphics_moveText(x, y) {
+ var current = this.current;
+ this.current.x = this.current.lineX += x;
+ this.current.y = this.current.lineY += y;
+
+ current.xcoords = [];
+ current.tspan = document.createElementNS(NS, 'svg:tspan');
+ current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
+ current.tspan.setAttributeNS(null, 'font-size',
+ pf(current.fontSize) + 'px');
+ current.tspan.setAttributeNS(null, 'y', pf(-current.y));
+ },
+
+ showText: function SVGGraphics_showText(glyphs) {
+ var current = this.current;
+ var font = current.font;
+ var fontSize = current.fontSize;
+
+ if (fontSize === 0) {
+ return;
+ }
+
+ var charSpacing = current.charSpacing;
+ var wordSpacing = current.wordSpacing;
+ var fontDirection = current.fontDirection;
+ var textHScale = current.textHScale * fontDirection;
+ var glyphsLength = glyphs.length;
+ var vertical = font.vertical;
+ var widthAdvanceScale = fontSize * current.fontMatrix[0];
+
+ var x = 0, i;
+ for (i = 0; i < glyphsLength; ++i) {
+ var glyph = glyphs[i];
+ if (glyph === null) {
+ // word break
+ x += fontDirection * wordSpacing;
+ continue;
+ } else if (isNum(glyph)) {
+ x += -glyph * fontSize * 0.001;
+ continue;
+ }
+ current.xcoords.push(current.x + x * textHScale);
+
+ var width = glyph.width;
+ var character = glyph.fontChar;
+ var charWidth = width * widthAdvanceScale + charSpacing * fontDirection;
+ x += charWidth;
+
+ current.tspan.textContent += character;
+ }
+ if (vertical) {
+ current.y -= x * textHScale;
+ } else {
+ current.x += x * textHScale;
+ }
+
+ current.tspan.setAttributeNS(null, 'x',
+ current.xcoords.map(pf).join(' '));
+ current.tspan.setAttributeNS(null, 'y', pf(-current.y));
+ current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
+ current.tspan.setAttributeNS(null, 'font-size',
+ pf(current.fontSize) + 'px');
+ if (current.fontStyle !== SVG_DEFAULTS.fontStyle) {
+ current.tspan.setAttributeNS(null, 'font-style', current.fontStyle);
+ }
+ if (current.fontWeight !== SVG_DEFAULTS.fontWeight) {
+ current.tspan.setAttributeNS(null, 'font-weight', current.fontWeight);
+ }
+ if (current.fillColor !== SVG_DEFAULTS.fillColor) {
+ current.tspan.setAttributeNS(null, 'fill', current.fillColor);
+ }
+
+ current.txtElement.setAttributeNS(null, 'transform',
+ pm(current.textMatrix) +
+ ' scale(1, -1)' );
+ current.txtElement.setAttributeNS(XML_NS, 'xml:space', 'preserve');
+ current.txtElement.appendChild(current.tspan);
+ current.txtgrp.appendChild(current.txtElement);
+
+ this.tgrp.appendChild(current.txtElement);
+
+ },
+
+ setLeadingMoveText: function SVGGraphics_setLeadingMoveText(x, y) {
+ this.setLeading(-y);
+ this.moveText(x, y);
+ },
+
+ addFontStyle: function SVGGraphics_addFontStyle(fontObj) {
+ if (!this.cssStyle) {
+ this.cssStyle = document.createElementNS(NS, 'svg:style');
+ this.cssStyle.setAttributeNS(null, 'type', 'text/css');
+ this.defs.appendChild(this.cssStyle);
+ }
+
+ var url = PDFJS.createObjectURL(fontObj.data, fontObj.mimetype);
+ this.cssStyle.textContent +=
+ '@font-face { font-family: "' + fontObj.loadedName + '";' +
+ ' src: url(' + url + '); }\n';
+ },
+
+ setFont: function SVGGraphics_setFont(details) {
+ var current = this.current;
+ var fontObj = this.commonObjs.get(details[0]);
+ var size = details[1];
+ this.current.font = fontObj;
+
+ if (this.embedFonts && fontObj.data &&
+ !this.embeddedFonts[fontObj.loadedName]) {
+ this.addFontStyle(fontObj);
+ this.embeddedFonts[fontObj.loadedName] = fontObj;
+ }
+
+ current.fontMatrix = (fontObj.fontMatrix ?
+ fontObj.fontMatrix : FONT_IDENTITY_MATRIX);
+
+ var bold = fontObj.black ? (fontObj.bold ? 'bolder' : 'bold') :
+ (fontObj.bold ? 'bold' : 'normal');
+ var italic = fontObj.italic ? 'italic' : 'normal';
+
+ if (size < 0) {
+ size = -size;
+ current.fontDirection = -1;
+ } else {
+ current.fontDirection = 1;
+ }
+ current.fontSize = size;
+ current.fontFamily = fontObj.loadedName;
+ current.fontWeight = bold;
+ current.fontStyle = italic;
+
+ current.tspan = document.createElementNS(NS, 'svg:tspan');
+ current.tspan.setAttributeNS(null, 'y', pf(-current.y));
+ current.xcoords = [];
+ },
+
+ endText: function SVGGraphics_endText() {
+ if (this.current.pendingClip) {
+ this.cgrp.appendChild(this.tgrp);
+ this.pgrp.appendChild(this.cgrp);
+ } else {
+ this.pgrp.appendChild(this.tgrp);
+ }
+ this.tgrp = document.createElementNS(NS, 'svg:g');
+ this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+ },
+
+ // Path properties
+ setLineWidth: function SVGGraphics_setLineWidth(width) {
+ this.current.lineWidth = width;
+ },
+ setLineCap: function SVGGraphics_setLineCap(style) {
+ this.current.lineCap = LINE_CAP_STYLES[style];
+ },
+ setLineJoin: function SVGGraphics_setLineJoin(style) {
+ this.current.lineJoin = LINE_JOIN_STYLES[style];
+ },
+ setMiterLimit: function SVGGraphics_setMiterLimit(limit) {
+ this.current.miterLimit = limit;
+ },
+ setStrokeRGBColor: function SVGGraphics_setStrokeRGBColor(r, g, b) {
+ var color = Util.makeCssRgb(r, g, b);
+ this.current.strokeColor = color;
+ },
+ setFillRGBColor: function SVGGraphics_setFillRGBColor(r, g, b) {
+ var color = Util.makeCssRgb(r, g, b);
+ this.current.fillColor = color;
+ this.current.tspan = document.createElementNS(NS, 'svg:tspan');
+ this.current.xcoords = [];
+ },
+ setDash: function SVGGraphics_setDash(dashArray, dashPhase) {
+ this.current.dashArray = dashArray;
+ this.current.dashPhase = dashPhase;
+ },
+
+ constructPath: function SVGGraphics_constructPath(ops, args) {
+ var current = this.current;
+ var x = current.x, y = current.y;
+ current.path = document.createElementNS(NS, 'svg:path');
+ var d = [];
+ var opLength = ops.length;
+
+ for (var i = 0, j = 0; i < opLength; i++) {
+ switch (ops[i] | 0) {
+ case OPS.rectangle:
+ x = args[j++];
+ y = args[j++];
+ var width = args[j++];
+ var height = args[j++];
+ var xw = x + width;
+ var yh = y + height;
+ d.push('M', pf(x), pf(y), 'L', pf(xw) , pf(y), 'L', pf(xw), pf(yh),
+ 'L', pf(x), pf(yh), 'Z');
+ break;
+ case OPS.moveTo:
+ x = args[j++];
+ y = args[j++];
+ d.push('M', pf(x), pf(y));
+ break;
+ case OPS.lineTo:
+ x = args[j++];
+ y = args[j++];
+ d.push('L', pf(x) , pf(y));
+ break;
+ case OPS.curveTo:
+ x = args[j + 4];
+ y = args[j + 5];
+ d.push('C', pf(args[j]), pf(args[j + 1]), pf(args[j + 2]),
+ pf(args[j + 3]), pf(x), pf(y));
+ j += 6;
+ break;
+ case OPS.curveTo2:
+ x = args[j + 2];
+ y = args[j + 3];
+ d.push('C', pf(x), pf(y), pf(args[j]), pf(args[j + 1]),
+ pf(args[j + 2]), pf(args[j + 3]));
+ j += 4;
+ break;
+ case OPS.curveTo3:
+ x = args[j + 2];
+ y = args[j + 3];
+ d.push('C', pf(args[j]), pf(args[j + 1]), pf(x), pf(y),
+ pf(x), pf(y));
+ j += 4;
+ break;
+ case OPS.closePath:
+ d.push('Z');
+ break;
+ }
+ }
+ current.path.setAttributeNS(null, 'd', d.join(' '));
+ current.path.setAttributeNS(null, 'stroke-miterlimit',
+ pf(current.miterLimit));
+ current.path.setAttributeNS(null, 'stroke-linecap', current.lineCap);
+ current.path.setAttributeNS(null, 'stroke-linejoin', current.lineJoin);
+ current.path.setAttributeNS(null, 'stroke-width',
+ pf(current.lineWidth) + 'px');
+ current.path.setAttributeNS(null, 'stroke-dasharray',
+ current.dashArray.map(pf).join(' '));
+ current.path.setAttributeNS(null, 'stroke-dashoffset',
+ pf(current.dashPhase) + 'px');
+ current.path.setAttributeNS(null, 'fill', 'none');
+
+ this.tgrp.appendChild(current.path);
+ if (current.pendingClip) {
+ this.cgrp.appendChild(this.tgrp);
+ this.pgrp.appendChild(this.cgrp);
+ } else {
+ this.pgrp.appendChild(this.tgrp);
+ }
+ // Saving a reference in current.element so that it can be addressed
+ // in 'fill' and 'stroke'
+ current.element = current.path;
+ current.setCurrentPoint(x, y);
+ },
+
+ endPath: function SVGGraphics_endPath() {
+ var current = this.current;
+ if (current.pendingClip) {
+ this.cgrp.appendChild(this.tgrp);
+ this.pgrp.appendChild(this.cgrp);
+ } else {
+ this.pgrp.appendChild(this.tgrp);
+ }
+ this.tgrp = document.createElementNS(NS, 'svg:g');
+ this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+ },
+
+ clip: function SVGGraphics_clip(type) {
+ var current = this.current;
+ // Add current path to clipping path
+ current.clipId = 'clippath' + clipCount;
+ clipCount++;
+ this.clippath = document.createElementNS(NS, 'svg:clipPath');
+ this.clippath.setAttributeNS(null, 'id', current.clipId);
+ var clipElement = current.element.cloneNode();
+ if (type === 'evenodd') {
+ clipElement.setAttributeNS(null, 'clip-rule', 'evenodd');
+ } else {
+ clipElement.setAttributeNS(null, 'clip-rule', 'nonzero');
+ }
+ this.clippath.setAttributeNS(null, 'transform', pm(this.transformMatrix));
+ this.clippath.appendChild(clipElement);
+ this.defs.appendChild(this.clippath);
+
+ // Create a new group with that attribute
+ current.pendingClip = true;
+ this.cgrp = document.createElementNS(NS, 'svg:g');
+ this.cgrp.setAttributeNS(null, 'clip-path',
+ 'url(#' + current.clipId + ')');
+ this.pgrp.appendChild(this.cgrp);
+ },
+
+ closePath: function SVGGraphics_closePath() {
+ var current = this.current;
+ var d = current.path.getAttributeNS(null, 'd');
+ d += 'Z';
+ current.path.setAttributeNS(null, 'd', d);
+ },
+
+ setLeading: function SVGGraphics_setLeading(leading) {
+ this.current.leading = -leading;
+ },
+
+ setTextRise: function SVGGraphics_setTextRise(textRise) {
+ this.current.textRise = textRise;
+ },
+
+ setHScale: function SVGGraphics_setHScale(scale) {
+ this.current.textHScale = scale / 100;
+ },
+
+ setGState: function SVGGraphics_setGState(states) {
+ for (var i = 0, ii = states.length; i < ii; i++) {
+ var state = states[i];
+ var key = state[0];
+ var value = state[1];
+
+ switch (key) {
+ case 'LW':
+ this.setLineWidth(value);
+ break;
+ case 'LC':
+ this.setLineCap(value);
+ break;
+ case 'LJ':
+ this.setLineJoin(value);
+ break;
+ case 'ML':
+ this.setMiterLimit(value);
+ break;
+ case 'D':
+ this.setDash(value[0], value[1]);
+ break;
+ case 'RI':
+ break;
+ case 'FL':
+ break;
+ case 'Font':
+ this.setFont(value);
+ break;
+ case 'CA':
+ break;
+ case 'ca':
+ break;
+ case 'BM':
+ break;
+ case 'SMask':
+ break;
+ }
+ }
+ },
+
+ fill: function SVGGraphics_fill() {
+ var current = this.current;
+ current.element.setAttributeNS(null, 'fill', current.fillColor);
+ },
+
+ stroke: function SVGGraphics_stroke() {
+ var current = this.current;
+ current.element.setAttributeNS(null, 'stroke', current.strokeColor);
+ current.element.setAttributeNS(null, 'fill', 'none');
+ },
+
+ eoFill: function SVGGraphics_eoFill() {
+ var current = this.current;
+ current.element.setAttributeNS(null, 'fill', current.fillColor);
+ current.element.setAttributeNS(null, 'fill-rule', 'evenodd');
+ },
+
+ fillStroke: function SVGGraphics_fillStroke() {
+ // Order is important since stroke wants fill to be none.
+ // First stroke, then if fill needed, it will be overwritten.
+ this.stroke();
+ this.fill();
+ },
+
+ eoFillStroke: function SVGGraphics_eoFillStroke() {
+ this.current.element.setAttributeNS(null, 'fill-rule', 'evenodd');
+ this.fillStroke();
+ },
+
+ closeStroke: function SVGGraphics_closeStroke() {
+ this.closePath();
+ this.stroke();
+ },
+
+ closeFillStroke: function SVGGraphics_closeFillStroke() {
+ this.closePath();
+ this.fillStroke();
+ },
+
+ paintSolidColorImageMask:
+ function SVGGraphics_paintSolidColorImageMask() {
+ var current = this.current;
+ var rect = document.createElementNS(NS, 'svg:rect');
+ rect.setAttributeNS(null, 'x', '0');
+ rect.setAttributeNS(null, 'y', '0');
+ rect.setAttributeNS(null, 'width', '1px');
+ rect.setAttributeNS(null, 'height', '1px');
+ rect.setAttributeNS(null, 'fill', current.fillColor);
+ this.tgrp.appendChild(rect);
+ },
+
+ paintJpegXObject: function SVGGraphics_paintJpegXObject(objId, w, h) {
+ var current = this.current;
+ var imgObj = this.objs.get(objId);
+ var imgEl = document.createElementNS(NS, 'svg:image');
+ imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgObj.src);
+ imgEl.setAttributeNS(null, 'width', imgObj.width + 'px');
+ imgEl.setAttributeNS(null, 'height', imgObj.height + 'px');
+ imgEl.setAttributeNS(null, 'x', '0');
+ imgEl.setAttributeNS(null, 'y', pf(-h));
+ imgEl.setAttributeNS(null, 'transform',
+ 'scale(' + pf(1 / w) + ' ' + pf(-1 / h) + ')');
+
+ this.tgrp.appendChild(imgEl);
+ if (current.pendingClip) {
+ this.cgrp.appendChild(this.tgrp);
+ this.pgrp.appendChild(this.cgrp);
+ } else {
+ this.pgrp.appendChild(this.tgrp);
+ }
+ },
+
+ paintImageXObject: function SVGGraphics_paintImageXObject(objId) {
+ var imgData = this.objs.get(objId);
+ if (!imgData) {
+ warn('Dependent image isn\'t ready yet');
+ return;
+ }
+ this.paintInlineImageXObject(imgData);
+ },
+
+ paintInlineImageXObject:
+ function SVGGraphics_paintInlineImageXObject(imgData, mask) {
+ var current = this.current;
+ var width = imgData.width;
+ var height = imgData.height;
+
+ var imgSrc = convertImgDataToPng(imgData);
+ var cliprect = document.createElementNS(NS, 'svg:rect');
+ cliprect.setAttributeNS(null, 'x', '0');
+ cliprect.setAttributeNS(null, 'y', '0');
+ cliprect.setAttributeNS(null, 'width', pf(width));
+ cliprect.setAttributeNS(null, 'height', pf(height));
+ current.element = cliprect;
+ this.clip('nonzero');
+ var imgEl = document.createElementNS(NS, 'svg:image');
+ imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgSrc);
+ imgEl.setAttributeNS(null, 'x', '0');
+ imgEl.setAttributeNS(null, 'y', pf(-height));
+ imgEl.setAttributeNS(null, 'width', pf(width) + 'px');
+ imgEl.setAttributeNS(null, 'height', pf(height) + 'px');
+ imgEl.setAttributeNS(null, 'transform',
+ 'scale(' + pf(1 / width) + ' ' +
+ pf(-1 / height) + ')');
+ if (mask) {
+ mask.appendChild(imgEl);
+ } else {
+ this.tgrp.appendChild(imgEl);
+ }
+ if (current.pendingClip) {
+ this.cgrp.appendChild(this.tgrp);
+ this.pgrp.appendChild(this.cgrp);
+ } else {
+ this.pgrp.appendChild(this.tgrp);
+ }
+ },
+
+ paintImageMaskXObject:
+ function SVGGraphics_paintImageMaskXObject(imgData) {
+ var current = this.current;
+ var width = imgData.width;
+ var height = imgData.height;
+ var fillColor = current.fillColor;
+
+ current.maskId = 'mask' + maskCount++;
+ var mask = document.createElementNS(NS, 'svg:mask');
+ mask.setAttributeNS(null, 'id', current.maskId);
+
+ var rect = document.createElementNS(NS, 'svg:rect');
+ rect.setAttributeNS(null, 'x', '0');
+ rect.setAttributeNS(null, 'y', '0');
+ rect.setAttributeNS(null, 'width', pf(width));
+ rect.setAttributeNS(null, 'height', pf(height));
+ rect.setAttributeNS(null, 'fill', fillColor);
+ rect.setAttributeNS(null, 'mask', 'url(#' + current.maskId +')');
+ this.defs.appendChild(mask);
+ this.tgrp.appendChild(rect);
+
+ this.paintInlineImageXObject(imgData, mask);
+ },
+
+ paintFormXObjectBegin:
+ function SVGGraphics_paintFormXObjectBegin(matrix, bbox) {
+ this.save();
+
+ if (isArray(matrix) && matrix.length === 6) {
+ this.transform(matrix[0], matrix[1], matrix[2],
+ matrix[3], matrix[4], matrix[5]);
+ }
+
+ if (isArray(bbox) && bbox.length === 4) {
+ var width = bbox[2] - bbox[0];
+ var height = bbox[3] - bbox[1];
+
+ var cliprect = document.createElementNS(NS, 'svg:rect');
+ cliprect.setAttributeNS(null, 'x', bbox[0]);
+ cliprect.setAttributeNS(null, 'y', bbox[1]);
+ cliprect.setAttributeNS(null, 'width', pf(width));
+ cliprect.setAttributeNS(null, 'height', pf(height));
+ this.current.element = cliprect;
+ this.clip('nonzero');
+ this.endPath();
+ }
+ },
+
+ paintFormXObjectEnd:
+ function SVGGraphics_paintFormXObjectEnd() {
+ this.restore();
+ }
+ };
+ return SVGGraphics;
+})();
+
+PDFJS.SVGGraphics = SVGGraphics;
+
+exports.SVGGraphics = SVGGraphics;
+}));
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsDisplayTextLayer = {}), root.pdfjsSharedUtil,
+ root.pdfjsDisplayDOMUtils, root.pdfjsSharedGlobal);
+ }
+}(this, function (exports, sharedUtil, displayDOMUtils, sharedGlobal) {
+
+var Util = sharedUtil.Util;
+var createPromiseCapability = sharedUtil.createPromiseCapability;
+var CustomStyle = displayDOMUtils.CustomStyle;
+var PDFJS = sharedGlobal.PDFJS;
+
+/**
+ * Text layer render parameters.
+ *
+ * @typedef {Object} TextLayerRenderParameters
+ * @property {TextContent} textContent - Text content to render (the object is
+ * returned by the page's getTextContent() method).
+ * @property {HTMLElement} container - HTML element that will contain text runs.
+ * @property {PDFJS.PageViewport} viewport - The target viewport to properly
+ * layout the text runs.
+ * @property {Array} textDivs - (optional) HTML elements that are correspond
+ * the text items of the textContent input. This is output and shall be
+ * initially be set to empty array.
+ * @property {number} timeout - (optional) Delay in milliseconds before
+ * rendering of the text runs occurs.
+ */
+var renderTextLayer = (function renderTextLayerClosure() {
+ var MAX_TEXT_DIVS_TO_RENDER = 100000;
+
+ var NonWhitespaceRegexp = /\S/;
+
+ function isAllWhitespace(str) {
+ return !NonWhitespaceRegexp.test(str);
+ }
+
+ function appendText(textDivs, viewport, geom, styles) {
+ var style = styles[geom.fontName];
+ var textDiv = document.createElement('div');
+ textDivs.push(textDiv);
+ if (isAllWhitespace(geom.str)) {
+ textDiv.dataset.isWhitespace = true;
+ return;
+ }
+ var tx = Util.transform(viewport.transform, geom.transform);
+ var angle = Math.atan2(tx[1], tx[0]);
+ if (style.vertical) {
+ angle += Math.PI / 2;
+ }
+ var fontHeight = Math.sqrt((tx[2] * tx[2]) + (tx[3] * tx[3]));
+ var fontAscent = fontHeight;
+ if (style.ascent) {
+ fontAscent = style.ascent * fontAscent;
+ } else if (style.descent) {
+ fontAscent = (1 + style.descent) * fontAscent;
+ }
+
+ var left;
+ var top;
+ if (angle === 0) {
+ left = tx[4];
+ top = tx[5] - fontAscent;
+ } else {
+ left = tx[4] + (fontAscent * Math.sin(angle));
+ top = tx[5] - (fontAscent * Math.cos(angle));
+ }
+ textDiv.style.left = left + 'px';
+ textDiv.style.top = top + 'px';
+ textDiv.style.fontSize = fontHeight + 'px';
+ textDiv.style.fontFamily = style.fontFamily;
+
+ textDiv.textContent = geom.str;
+ // |fontName| is only used by the Font Inspector. This test will succeed
+ // when e.g. the Font Inspector is off but the Stepper is on, but it's
+ // not worth the effort to do a more accurate test.
+ if (PDFJS.pdfBug) {
+ textDiv.dataset.fontName = geom.fontName;
+ }
+ // Storing into dataset will convert number into string.
+ if (angle !== 0) {
+ textDiv.dataset.angle = angle * (180 / Math.PI);
+ }
+ // We don't bother scaling single-char text divs, because it has very
+ // little effect on text highlighting. This makes scrolling on docs with
+ // lots of such divs a lot faster.
+ if (geom.str.length > 1) {
+ if (style.vertical) {
+ textDiv.dataset.canvasWidth = geom.height * viewport.scale;
+ } else {
+ textDiv.dataset.canvasWidth = geom.width * viewport.scale;
+ }
+ }
+ }
+
+ function render(task) {
+ if (task._canceled) {
+ return;
+ }
+ var textLayerFrag = task._container;
+ var textDivs = task._textDivs;
+ var capability = task._capability;
+ var textDivsLength = textDivs.length;
+
+ // No point in rendering many divs as it would make the browser
+ // unusable even after the divs are rendered.
+ if (textDivsLength > MAX_TEXT_DIVS_TO_RENDER) {
+ capability.resolve();
+ return;
+ }
+
+ var canvas = document.createElement('canvas');
+ canvas.mozOpaque = true;
+ var ctx = canvas.getContext('2d', {alpha: false});
+
+ var lastFontSize;
+ var lastFontFamily;
+ for (var i = 0; i < textDivsLength; i++) {
+ var textDiv = textDivs[i];
+ if (textDiv.dataset.isWhitespace !== undefined) {
+ continue;
+ }
+
+ var fontSize = textDiv.style.fontSize;
+ var fontFamily = textDiv.style.fontFamily;
+
+ // Only build font string and set to context if different from last.
+ if (fontSize !== lastFontSize || fontFamily !== lastFontFamily) {
+ ctx.font = fontSize + ' ' + fontFamily;
+ lastFontSize = fontSize;
+ lastFontFamily = fontFamily;
+ }
+
+ var width = ctx.measureText(textDiv.textContent).width;
+ if (width > 0) {
+ textLayerFrag.appendChild(textDiv);
+ var transform;
+ if (textDiv.dataset.canvasWidth !== undefined) {
+ // Dataset values come of type string.
+ var textScale = textDiv.dataset.canvasWidth / width;
+ transform = 'scaleX(' + textScale + ')';
+ } else {
+ transform = '';
+ }
+ var rotation = textDiv.dataset.angle;
+ if (rotation) {
+ transform = 'rotate(' + rotation + 'deg) ' + transform;
+ }
+ if (transform) {
+ CustomStyle.setProp('transform' , textDiv, transform);
+ }
+ }
+ }
+ capability.resolve();
+ }
+
+ /**
+ * Text layer rendering task.
+ *
+ * @param {TextContent} textContent
+ * @param {HTMLElement} container
+ * @param {PDFJS.PageViewport} viewport
+ * @param {Array} textDivs
+ * @private
+ */
+ function TextLayerRenderTask(textContent, container, viewport, textDivs) {
+ this._textContent = textContent;
+ this._container = container;
+ this._viewport = viewport;
+ textDivs = textDivs || [];
+ this._textDivs = textDivs;
+ this._canceled = false;
+ this._capability = createPromiseCapability();
+ this._renderTimer = null;
+ }
+ TextLayerRenderTask.prototype = {
+ get promise() {
+ return this._capability.promise;
+ },
+
+ cancel: function TextLayer_cancel() {
+ this._canceled = true;
+ if (this._renderTimer !== null) {
+ clearTimeout(this._renderTimer);
+ this._renderTimer = null;
+ }
+ this._capability.reject('canceled');
+ },
+
+ _render: function TextLayer_render(timeout) {
+ var textItems = this._textContent.items;
+ var styles = this._textContent.styles;
+ var textDivs = this._textDivs;
+ var viewport = this._viewport;
+ for (var i = 0, len = textItems.length; i < len; i++) {
+ appendText(textDivs, viewport, textItems[i], styles);
+ }
+
+ if (!timeout) { // Render right away
+ render(this);
+ } else { // Schedule
+ var self = this;
+ this._renderTimer = setTimeout(function() {
+ render(self);
+ self._renderTimer = null;
+ }, timeout);
+ }
+ }
+ };
+
+
+ /**
+ * Starts rendering of the text layer.
+ *
+ * @param {TextLayerRenderParameters} renderParameters
+ * @returns {TextLayerRenderTask}
+ */
+ function renderTextLayer(renderParameters) {
+ var task = new TextLayerRenderTask(renderParameters.textContent,
+ renderParameters.container,
+ renderParameters.viewport,
+ renderParameters.textDivs);
+ task._render(renderParameters.timeout);
+ return task;
+ }
+
+ return renderTextLayer;
+})();
+
+PDFJS.renderTextLayer = renderTextLayer;
+
+exports.renderTextLayer = renderTextLayer;
+}));
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsDisplayWebGL = {}), root.pdfjsSharedUtil);
+ }
+}(this, function (exports, sharedUtil) {
+
+var shadow = sharedUtil.shadow;
+
+var WebGLUtils = (function WebGLUtilsClosure() {
+ function loadShader(gl, code, shaderType) {
+ var shader = gl.createShader(shaderType);
+ gl.shaderSource(shader, code);
+ gl.compileShader(shader);
+ var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
+ if (!compiled) {
+ var errorMsg = gl.getShaderInfoLog(shader);
+ throw new Error('Error during shader compilation: ' + errorMsg);
+ }
+ return shader;
+ }
+ function createVertexShader(gl, code) {
+ return loadShader(gl, code, gl.VERTEX_SHADER);
+ }
+ function createFragmentShader(gl, code) {
+ return loadShader(gl, code, gl.FRAGMENT_SHADER);
+ }
+ function createProgram(gl, shaders) {
+ var program = gl.createProgram();
+ for (var i = 0, ii = shaders.length; i < ii; ++i) {
+ gl.attachShader(program, shaders[i]);
+ }
+ gl.linkProgram(program);
+ var linked = gl.getProgramParameter(program, gl.LINK_STATUS);
+ if (!linked) {
+ var errorMsg = gl.getProgramInfoLog(program);
+ throw new Error('Error during program linking: ' + errorMsg);
+ }
+ return program;
+ }
+ function createTexture(gl, image, textureId) {
+ gl.activeTexture(textureId);
+ var texture = gl.createTexture();
+ gl.bindTexture(gl.TEXTURE_2D, texture);
+
+ // Set the parameters so we can render any size image.
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+
+ // Upload the image into the texture.
+ gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);
+ return texture;
+ }
+
+ var currentGL, currentCanvas;
+ function generateGL() {
+ if (currentGL) {
+ return;
+ }
+ currentCanvas = document.createElement('canvas');
+ currentGL = currentCanvas.getContext('webgl',
+ { premultipliedalpha: false });
+ }
+
+ var smaskVertexShaderCode = '\
+ attribute vec2 a_position; \
+ attribute vec2 a_texCoord; \
+ \
+ uniform vec2 u_resolution; \
+ \
+ varying vec2 v_texCoord; \
+ \
+ void main() { \
+ vec2 clipSpace = (a_position / u_resolution) * 2.0 - 1.0; \
+ gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1); \
+ \
+ v_texCoord = a_texCoord; \
+ } ';
+
+ var smaskFragmentShaderCode = '\
+ precision mediump float; \
+ \
+ uniform vec4 u_backdrop; \
+ uniform int u_subtype; \
+ uniform sampler2D u_image; \
+ uniform sampler2D u_mask; \
+ \
+ varying vec2 v_texCoord; \
+ \
+ void main() { \
+ vec4 imageColor = texture2D(u_image, v_texCoord); \
+ vec4 maskColor = texture2D(u_mask, v_texCoord); \
+ if (u_backdrop.a > 0.0) { \
+ maskColor.rgb = maskColor.rgb * maskColor.a + \
+ u_backdrop.rgb * (1.0 - maskColor.a); \
+ } \
+ float lum; \
+ if (u_subtype == 0) { \
+ lum = maskColor.a; \
+ } else { \
+ lum = maskColor.r * 0.3 + maskColor.g * 0.59 + \
+ maskColor.b * 0.11; \
+ } \
+ imageColor.a *= lum; \
+ imageColor.rgb *= imageColor.a; \
+ gl_FragColor = imageColor; \
+ } ';
+
+ var smaskCache = null;
+
+ function initSmaskGL() {
+ var canvas, gl;
+
+ generateGL();
+ canvas = currentCanvas;
+ currentCanvas = null;
+ gl = currentGL;
+ currentGL = null;
+
+ // setup a GLSL program
+ var vertexShader = createVertexShader(gl, smaskVertexShaderCode);
+ var fragmentShader = createFragmentShader(gl, smaskFragmentShaderCode);
+ var program = createProgram(gl, [vertexShader, fragmentShader]);
+ gl.useProgram(program);
+
+ var cache = {};
+ cache.gl = gl;
+ cache.canvas = canvas;
+ cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution');
+ cache.positionLocation = gl.getAttribLocation(program, 'a_position');
+ cache.backdropLocation = gl.getUniformLocation(program, 'u_backdrop');
+ cache.subtypeLocation = gl.getUniformLocation(program, 'u_subtype');
+
+ var texCoordLocation = gl.getAttribLocation(program, 'a_texCoord');
+ var texLayerLocation = gl.getUniformLocation(program, 'u_image');
+ var texMaskLocation = gl.getUniformLocation(program, 'u_mask');
+
+ // provide texture coordinates for the rectangle.
+ var texCoordBuffer = gl.createBuffer();
+ gl.bindBuffer(gl.ARRAY_BUFFER, texCoordBuffer);
+ gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
+ 0.0, 0.0,
+ 1.0, 0.0,
+ 0.0, 1.0,
+ 0.0, 1.0,
+ 1.0, 0.0,
+ 1.0, 1.0]), gl.STATIC_DRAW);
+ gl.enableVertexAttribArray(texCoordLocation);
+ gl.vertexAttribPointer(texCoordLocation, 2, gl.FLOAT, false, 0, 0);
+
+ gl.uniform1i(texLayerLocation, 0);
+ gl.uniform1i(texMaskLocation, 1);
+
+ smaskCache = cache;
+ }
+
+ function composeSMask(layer, mask, properties) {
+ var width = layer.width, height = layer.height;
+
+ if (!smaskCache) {
+ initSmaskGL();
+ }
+ var cache = smaskCache,canvas = cache.canvas, gl = cache.gl;
+ canvas.width = width;
+ canvas.height = height;
+ gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
+ gl.uniform2f(cache.resolutionLocation, width, height);
+
+ if (properties.backdrop) {
+ gl.uniform4f(cache.resolutionLocation, properties.backdrop[0],
+ properties.backdrop[1], properties.backdrop[2], 1);
+ } else {
+ gl.uniform4f(cache.resolutionLocation, 0, 0, 0, 0);
+ }
+ gl.uniform1i(cache.subtypeLocation,
+ properties.subtype === 'Luminosity' ? 1 : 0);
+
+ // Create a textures
+ var texture = createTexture(gl, layer, gl.TEXTURE0);
+ var maskTexture = createTexture(gl, mask, gl.TEXTURE1);
+
+
+ // Create a buffer and put a single clipspace rectangle in
+ // it (2 triangles)
+ var buffer = gl.createBuffer();
+ gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+ gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
+ 0, 0,
+ width, 0,
+ 0, height,
+ 0, height,
+ width, 0,
+ width, height]), gl.STATIC_DRAW);
+ gl.enableVertexAttribArray(cache.positionLocation);
+ gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0);
+
+ // draw
+ gl.clearColor(0, 0, 0, 0);
+ gl.enable(gl.BLEND);
+ gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+ gl.clear(gl.COLOR_BUFFER_BIT);
+
+ gl.drawArrays(gl.TRIANGLES, 0, 6);
+
+ gl.flush();
+
+ gl.deleteTexture(texture);
+ gl.deleteTexture(maskTexture);
+ gl.deleteBuffer(buffer);
+
+ return canvas;
+ }
+
+ var figuresVertexShaderCode = '\
+ attribute vec2 a_position; \
+ attribute vec3 a_color; \
+ \
+ uniform vec2 u_resolution; \
+ uniform vec2 u_scale; \
+ uniform vec2 u_offset; \
+ \
+ varying vec4 v_color; \
+ \
+ void main() { \
+ vec2 position = (a_position + u_offset) * u_scale; \
+ vec2 clipSpace = (position / u_resolution) * 2.0 - 1.0; \
+ gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1); \
+ \
+ v_color = vec4(a_color / 255.0, 1.0); \
+ } ';
+
+ var figuresFragmentShaderCode = '\
+ precision mediump float; \
+ \
+ varying vec4 v_color; \
+ \
+ void main() { \
+ gl_FragColor = v_color; \
+ } ';
+
+ var figuresCache = null;
+
+ function initFiguresGL() {
+ var canvas, gl;
+
+ generateGL();
+ canvas = currentCanvas;
+ currentCanvas = null;
+ gl = currentGL;
+ currentGL = null;
+
+ // setup a GLSL program
+ var vertexShader = createVertexShader(gl, figuresVertexShaderCode);
+ var fragmentShader = createFragmentShader(gl, figuresFragmentShaderCode);
+ var program = createProgram(gl, [vertexShader, fragmentShader]);
+ gl.useProgram(program);
+
+ var cache = {};
+ cache.gl = gl;
+ cache.canvas = canvas;
+ cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution');
+ cache.scaleLocation = gl.getUniformLocation(program, 'u_scale');
+ cache.offsetLocation = gl.getUniformLocation(program, 'u_offset');
+ cache.positionLocation = gl.getAttribLocation(program, 'a_position');
+ cache.colorLocation = gl.getAttribLocation(program, 'a_color');
+
+ figuresCache = cache;
+ }
+
+ function drawFigures(width, height, backgroundColor, figures, context) {
+ if (!figuresCache) {
+ initFiguresGL();
+ }
+ var cache = figuresCache, canvas = cache.canvas, gl = cache.gl;
+
+ canvas.width = width;
+ canvas.height = height;
+ gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
+ gl.uniform2f(cache.resolutionLocation, width, height);
+
+ // count triangle points
+ var count = 0;
+ var i, ii, rows;
+ for (i = 0, ii = figures.length; i < ii; i++) {
+ switch (figures[i].type) {
+ case 'lattice':
+ rows = (figures[i].coords.length / figures[i].verticesPerRow) | 0;
+ count += (rows - 1) * (figures[i].verticesPerRow - 1) * 6;
+ break;
+ case 'triangles':
+ count += figures[i].coords.length;
+ break;
+ }
+ }
+ // transfer data
+ var coords = new Float32Array(count * 2);
+ var colors = new Uint8Array(count * 3);
+ var coordsMap = context.coords, colorsMap = context.colors;
+ var pIndex = 0, cIndex = 0;
+ for (i = 0, ii = figures.length; i < ii; i++) {
+ var figure = figures[i], ps = figure.coords, cs = figure.colors;
+ switch (figure.type) {
+ case 'lattice':
+ var cols = figure.verticesPerRow;
+ rows = (ps.length / cols) | 0;
+ for (var row = 1; row < rows; row++) {
+ var offset = row * cols + 1;
+ for (var col = 1; col < cols; col++, offset++) {
+ coords[pIndex] = coordsMap[ps[offset - cols - 1]];
+ coords[pIndex + 1] = coordsMap[ps[offset - cols - 1] + 1];
+ coords[pIndex + 2] = coordsMap[ps[offset - cols]];
+ coords[pIndex + 3] = coordsMap[ps[offset - cols] + 1];
+ coords[pIndex + 4] = coordsMap[ps[offset - 1]];
+ coords[pIndex + 5] = coordsMap[ps[offset - 1] + 1];
+ colors[cIndex] = colorsMap[cs[offset - cols - 1]];
+ colors[cIndex + 1] = colorsMap[cs[offset - cols - 1] + 1];
+ colors[cIndex + 2] = colorsMap[cs[offset - cols - 1] + 2];
+ colors[cIndex + 3] = colorsMap[cs[offset - cols]];
+ colors[cIndex + 4] = colorsMap[cs[offset - cols] + 1];
+ colors[cIndex + 5] = colorsMap[cs[offset - cols] + 2];
+ colors[cIndex + 6] = colorsMap[cs[offset - 1]];
+ colors[cIndex + 7] = colorsMap[cs[offset - 1] + 1];
+ colors[cIndex + 8] = colorsMap[cs[offset - 1] + 2];
+
+ coords[pIndex + 6] = coords[pIndex + 2];
+ coords[pIndex + 7] = coords[pIndex + 3];
+ coords[pIndex + 8] = coords[pIndex + 4];
+ coords[pIndex + 9] = coords[pIndex + 5];
+ coords[pIndex + 10] = coordsMap[ps[offset]];
+ coords[pIndex + 11] = coordsMap[ps[offset] + 1];
+ colors[cIndex + 9] = colors[cIndex + 3];
+ colors[cIndex + 10] = colors[cIndex + 4];
+ colors[cIndex + 11] = colors[cIndex + 5];
+ colors[cIndex + 12] = colors[cIndex + 6];
+ colors[cIndex + 13] = colors[cIndex + 7];
+ colors[cIndex + 14] = colors[cIndex + 8];
+ colors[cIndex + 15] = colorsMap[cs[offset]];
+ colors[cIndex + 16] = colorsMap[cs[offset] + 1];
+ colors[cIndex + 17] = colorsMap[cs[offset] + 2];
+ pIndex += 12;
+ cIndex += 18;
+ }
+ }
+ break;
+ case 'triangles':
+ for (var j = 0, jj = ps.length; j < jj; j++) {
+ coords[pIndex] = coordsMap[ps[j]];
+ coords[pIndex + 1] = coordsMap[ps[j] + 1];
+ colors[cIndex] = colorsMap[cs[j]];
+ colors[cIndex + 1] = colorsMap[cs[j] + 1];
+ colors[cIndex + 2] = colorsMap[cs[j] + 2];
+ pIndex += 2;
+ cIndex += 3;
+ }
+ break;
+ }
+ }
+
+ // draw
+ if (backgroundColor) {
+ gl.clearColor(backgroundColor[0] / 255, backgroundColor[1] / 255,
+ backgroundColor[2] / 255, 1.0);
+ } else {
+ gl.clearColor(0, 0, 0, 0);
+ }
+ gl.clear(gl.COLOR_BUFFER_BIT);
+
+ var coordsBuffer = gl.createBuffer();
+ gl.bindBuffer(gl.ARRAY_BUFFER, coordsBuffer);
+ gl.bufferData(gl.ARRAY_BUFFER, coords, gl.STATIC_DRAW);
+ gl.enableVertexAttribArray(cache.positionLocation);
+ gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0);
+
+ var colorsBuffer = gl.createBuffer();
+ gl.bindBuffer(gl.ARRAY_BUFFER, colorsBuffer);
+ gl.bufferData(gl.ARRAY_BUFFER, colors, gl.STATIC_DRAW);
+ gl.enableVertexAttribArray(cache.colorLocation);
+ gl.vertexAttribPointer(cache.colorLocation, 3, gl.UNSIGNED_BYTE, false,
+ 0, 0);
+
+ gl.uniform2f(cache.scaleLocation, context.scaleX, context.scaleY);
+ gl.uniform2f(cache.offsetLocation, context.offsetX, context.offsetY);
+
+ gl.drawArrays(gl.TRIANGLES, 0, count);
+
+ gl.flush();
+
+ gl.deleteBuffer(coordsBuffer);
+ gl.deleteBuffer(colorsBuffer);
+
+ return canvas;
+ }
+
+ function cleanup() {
+ if (smaskCache && smaskCache.canvas) {
+ smaskCache.canvas.width = 0;
+ smaskCache.canvas.height = 0;
+ }
+ if (figuresCache && figuresCache.canvas) {
+ figuresCache.canvas.width = 0;
+ figuresCache.canvas.height = 0;
+ }
+ smaskCache = null;
+ figuresCache = null;
+ }
+
+ return {
+ get isEnabled() {
+ if (PDFJS.disableWebGL) {
+ return false;
+ }
+ var enabled = false;
+ try {
+ generateGL();
+ enabled = !!currentGL;
+ } catch (e) { }
+ return shadow(this, 'isEnabled', enabled);
+ },
+ composeSMask: composeSMask,
+ drawFigures: drawFigures,
+ clear: cleanup
+ };
+})();
+
+exports.WebGLUtils = WebGLUtils;
+}));
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsDisplayPatternHelper = {}), root.pdfjsSharedUtil,
+ root.pdfjsDisplayWebGL);
+ }
+}(this, function (exports, sharedUtil, displayWebGL) {
+
+var Util = sharedUtil.Util;
+var info = sharedUtil.info;
+var isArray = sharedUtil.isArray;
+var error = sharedUtil.error;
+var WebGLUtils = displayWebGL.WebGLUtils;
+
+var ShadingIRs = {};
+
+ShadingIRs.RadialAxial = {
+ fromIR: function RadialAxial_fromIR(raw) {
+ var type = raw[1];
+ var colorStops = raw[2];
+ var p0 = raw[3];
+ var p1 = raw[4];
+ var r0 = raw[5];
+ var r1 = raw[6];
+ return {
+ type: 'Pattern',
+ getPattern: function RadialAxial_getPattern(ctx) {
+ var grad;
+ if (type === 'axial') {
+ grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]);
+ } else if (type === 'radial') {
+ grad = ctx.createRadialGradient(p0[0], p0[1], r0, p1[0], p1[1], r1);
+ }
+
+ for (var i = 0, ii = colorStops.length; i < ii; ++i) {
+ var c = colorStops[i];
+ grad.addColorStop(c[0], c[1]);
+ }
+ return grad;
+ }
+ };
+ }
+};
+
+var createMeshCanvas = (function createMeshCanvasClosure() {
+ function drawTriangle(data, context, p1, p2, p3, c1, c2, c3) {
+ // Very basic Gouraud-shaded triangle rasterization algorithm.
+ var coords = context.coords, colors = context.colors;
+ var bytes = data.data, rowSize = data.width * 4;
+ var tmp;
+ if (coords[p1 + 1] > coords[p2 + 1]) {
+ tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp;
+ }
+ if (coords[p2 + 1] > coords[p3 + 1]) {
+ tmp = p2; p2 = p3; p3 = tmp; tmp = c2; c2 = c3; c3 = tmp;
+ }
+ if (coords[p1 + 1] > coords[p2 + 1]) {
+ tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp;
+ }
+ var x1 = (coords[p1] + context.offsetX) * context.scaleX;
+ var y1 = (coords[p1 + 1] + context.offsetY) * context.scaleY;
+ var x2 = (coords[p2] + context.offsetX) * context.scaleX;
+ var y2 = (coords[p2 + 1] + context.offsetY) * context.scaleY;
+ var x3 = (coords[p3] + context.offsetX) * context.scaleX;
+ var y3 = (coords[p3 + 1] + context.offsetY) * context.scaleY;
+ if (y1 >= y3) {
+ return;
+ }
+ var c1r = colors[c1], c1g = colors[c1 + 1], c1b = colors[c1 + 2];
+ var c2r = colors[c2], c2g = colors[c2 + 1], c2b = colors[c2 + 2];
+ var c3r = colors[c3], c3g = colors[c3 + 1], c3b = colors[c3 + 2];
+
+ var minY = Math.round(y1), maxY = Math.round(y3);
+ var xa, car, cag, cab;
+ var xb, cbr, cbg, cbb;
+ var k;
+ for (var y = minY; y <= maxY; y++) {
+ if (y < y2) {
+ k = y < y1 ? 0 : y1 === y2 ? 1 : (y1 - y) / (y1 - y2);
+ xa = x1 - (x1 - x2) * k;
+ car = c1r - (c1r - c2r) * k;
+ cag = c1g - (c1g - c2g) * k;
+ cab = c1b - (c1b - c2b) * k;
+ } else {
+ k = y > y3 ? 1 : y2 === y3 ? 0 : (y2 - y) / (y2 - y3);
+ xa = x2 - (x2 - x3) * k;
+ car = c2r - (c2r - c3r) * k;
+ cag = c2g - (c2g - c3g) * k;
+ cab = c2b - (c2b - c3b) * k;
+ }
+ k = y < y1 ? 0 : y > y3 ? 1 : (y1 - y) / (y1 - y3);
+ xb = x1 - (x1 - x3) * k;
+ cbr = c1r - (c1r - c3r) * k;
+ cbg = c1g - (c1g - c3g) * k;
+ cbb = c1b - (c1b - c3b) * k;
+ var x1_ = Math.round(Math.min(xa, xb));
+ var x2_ = Math.round(Math.max(xa, xb));
+ var j = rowSize * y + x1_ * 4;
+ for (var x = x1_; x <= x2_; x++) {
+ k = (xa - x) / (xa - xb);
+ k = k < 0 ? 0 : k > 1 ? 1 : k;
+ bytes[j++] = (car - (car - cbr) * k) | 0;
+ bytes[j++] = (cag - (cag - cbg) * k) | 0;
+ bytes[j++] = (cab - (cab - cbb) * k) | 0;
+ bytes[j++] = 255;
+ }
+ }
+ }
+
+ function drawFigure(data, figure, context) {
+ var ps = figure.coords;
+ var cs = figure.colors;
+ var i, ii;
+ switch (figure.type) {
+ case 'lattice':
+ var verticesPerRow = figure.verticesPerRow;
+ var rows = Math.floor(ps.length / verticesPerRow) - 1;
+ var cols = verticesPerRow - 1;
+ for (i = 0; i < rows; i++) {
+ var q = i * verticesPerRow;
+ for (var j = 0; j < cols; j++, q++) {
+ drawTriangle(data, context,
+ ps[q], ps[q + 1], ps[q + verticesPerRow],
+ cs[q], cs[q + 1], cs[q + verticesPerRow]);
+ drawTriangle(data, context,
+ ps[q + verticesPerRow + 1], ps[q + 1], ps[q + verticesPerRow],
+ cs[q + verticesPerRow + 1], cs[q + 1], cs[q + verticesPerRow]);
+ }
+ }
+ break;
+ case 'triangles':
+ for (i = 0, ii = ps.length; i < ii; i += 3) {
+ drawTriangle(data, context,
+ ps[i], ps[i + 1], ps[i + 2],
+ cs[i], cs[i + 1], cs[i + 2]);
+ }
+ break;
+ default:
+ error('illigal figure');
+ break;
+ }
+ }
+
+ function createMeshCanvas(bounds, combinesScale, coords, colors, figures,
+ backgroundColor, cachedCanvases) {
+ // we will increase scale on some weird factor to let antialiasing take
+ // care of "rough" edges
+ var EXPECTED_SCALE = 1.1;
+ // MAX_PATTERN_SIZE is used to avoid OOM situation.
+ var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough
+
+ 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 scale;
+ if (shadingFill) {
+ scale = Util.singularValueDecompose2dScale(ctx.mozCurrentTransform);
+ } else {
+ // Obtain scale from matrix and current transformation matrix.
+ scale = Util.singularValueDecompose2dScale(owner.baseTransform);
+ if (matrix) {
+ var matrixScale = Util.singularValueDecompose2dScale(matrix);
+ scale = [scale[0] * matrixScale[0],
+ scale[1] * matrixScale[1]];
+ }
+ }
+
+
+ // Rasterizing on the main thread since sending/queue large canvases
+ // might cause OOM.
+ var temporaryPatternCanvas = createMeshCanvas(bounds, scale, coords,
+ colors, figures, shadingFill ? null : background,
+ owner.cachedCanvases);
+
+ if (!shadingFill) {
+ ctx.setTransform.apply(ctx, owner.baseTransform);
+ if (matrix) {
+ ctx.transform.apply(ctx, matrix);
+ }
+ }
+
+ ctx.translate(temporaryPatternCanvas.offsetX,
+ temporaryPatternCanvas.offsetY);
+ ctx.scale(temporaryPatternCanvas.scaleX,
+ temporaryPatternCanvas.scaleY);
+
+ return ctx.createPattern(temporaryPatternCanvas.canvas, 'no-repeat');
+ }
+ };
+ }
+};
+
+ShadingIRs.Dummy = {
+ fromIR: function Dummy_fromIR() {
+ return {
+ type: 'Pattern',
+ getPattern: function Dummy_fromIR_getPattern() {
+ return 'hotpink';
+ }
+ };
+ }
+};
+
+function getShadingPatternFromIR(raw) {
+ var shadingIR = ShadingIRs[raw[0]];
+ if (!shadingIR) {
+ error('Unknown IR type: ' + raw[0]);
+ }
+ return shadingIR.fromIR(raw);
+}
+
+var TilingPattern = (function TilingPatternClosure() {
+ var PaintType = {
+ COLORED: 1,
+ UNCOLORED: 2
+ };
+
+ var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough
+
+ function TilingPattern(IR, color, ctx, canvasGraphicsFactory, baseTransform) {
+ this.operatorList = IR[2];
+ this.matrix = IR[3] || [1, 0, 0, 1, 0, 0];
+ this.bbox = IR[4];
+ this.xstep = IR[5];
+ this.ystep = IR[6];
+ this.paintType = IR[7];
+ this.tilingType = IR[8];
+ this.color = color;
+ this.canvasGraphicsFactory = canvasGraphicsFactory;
+ this.baseTransform = baseTransform;
+ this.type = 'Pattern';
+ this.ctx = ctx;
+ }
+
+ TilingPattern.prototype = {
+ createPatternCanvas: function TilinPattern_createPatternCanvas(owner) {
+ var operatorList = this.operatorList;
+ var bbox = this.bbox;
+ var xstep = this.xstep;
+ var ystep = this.ystep;
+ var paintType = this.paintType;
+ var tilingType = this.tilingType;
+ var color = this.color;
+ var canvasGraphicsFactory = this.canvasGraphicsFactory;
+
+ info('TilingType: ' + tilingType);
+
+ var x0 = bbox[0], y0 = bbox[1], x1 = bbox[2], y1 = bbox[3];
+
+ var topLeft = [x0, y0];
+ // we want the canvas to be as large as the step size
+ var botRight = [x0 + xstep, y0 + ystep];
+
+ var width = botRight[0] - topLeft[0];
+ var height = botRight[1] - topLeft[1];
+
+ // Obtain scale from matrix and current transformation matrix.
+ var matrixScale = Util.singularValueDecompose2dScale(this.matrix);
+ var curMatrixScale = Util.singularValueDecompose2dScale(
+ this.baseTransform);
+ var combinedScale = [matrixScale[0] * curMatrixScale[0],
+ matrixScale[1] * curMatrixScale[1]];
+
+ // MAX_PATTERN_SIZE is used to avoid OOM situation.
+ // Use width and height values that are as close as possible to the end
+ // result when the pattern is used. Too low value makes the pattern look
+ // blurry. Too large value makes it look too crispy.
+ width = Math.min(Math.ceil(Math.abs(width * combinedScale[0])),
+ MAX_PATTERN_SIZE);
+
+ height = Math.min(Math.ceil(Math.abs(height * combinedScale[1])),
+ MAX_PATTERN_SIZE);
+
+ var tmpCanvas = owner.cachedCanvases.getCanvas('pattern',
+ width, height, true);
+ var tmpCtx = tmpCanvas.context;
+ var graphics = canvasGraphicsFactory.createCanvasGraphics(tmpCtx);
+ graphics.groupLevel = owner.groupLevel;
+
+ this.setFillAndStrokeStyleToContext(tmpCtx, paintType, color);
+
+ this.setScale(width, height, xstep, ystep);
+ this.transformToScale(graphics);
+
+ // transform coordinates to pattern space
+ var tmpTranslate = [1, 0, 0, 1, -topLeft[0], -topLeft[1]];
+ graphics.transform.apply(graphics, tmpTranslate);
+
+ this.clipBbox(graphics, bbox, x0, y0, x1, y1);
+
+ graphics.executeOperatorList(operatorList);
+ return tmpCanvas.canvas;
+ },
+
+ setScale: function TilingPattern_setScale(width, height, xstep, ystep) {
+ this.scale = [width / xstep, height / ystep];
+ },
+
+ transformToScale: function TilingPattern_transformToScale(graphics) {
+ var scale = this.scale;
+ var tmpScale = [scale[0], 0, 0, scale[1], 0, 0];
+ graphics.transform.apply(graphics, tmpScale);
+ },
+
+ scaleToContext: function TilingPattern_scaleToContext() {
+ var scale = this.scale;
+ this.ctx.scale(1 / scale[0], 1 / scale[1]);
+ },
+
+ clipBbox: function clipBbox(graphics, bbox, x0, y0, x1, y1) {
+ if (bbox && isArray(bbox) && bbox.length === 4) {
+ var bboxWidth = x1 - x0;
+ var bboxHeight = y1 - y0;
+ graphics.ctx.rect(x0, y0, bboxWidth, bboxHeight);
+ graphics.clip();
+ graphics.endPath();
+ }
+ },
+
+ setFillAndStrokeStyleToContext:
+ function setFillAndStrokeStyleToContext(context, paintType, color) {
+ switch (paintType) {
+ case PaintType.COLORED:
+ var ctx = this.ctx;
+ context.fillStyle = ctx.fillStyle;
+ context.strokeStyle = ctx.strokeStyle;
+ break;
+ case PaintType.UNCOLORED:
+ var cssColor = Util.makeCssRgb(color[0], color[1], color[2]);
+ context.fillStyle = cssColor;
+ context.strokeStyle = cssColor;
+ break;
+ default:
+ error('Unsupported paint type: ' + paintType);
+ }
+ },
+
+ getPattern: function TilingPattern_getPattern(ctx, owner) {
+ var temporaryPatternCanvas = this.createPatternCanvas(owner);
+
+ ctx = this.ctx;
+ ctx.setTransform.apply(ctx, this.baseTransform);
+ ctx.transform.apply(ctx, this.matrix);
+ this.scaleToContext();
+
+ return ctx.createPattern(temporaryPatternCanvas, 'repeat');
+ }
+ };
+
+ return TilingPattern;
+})();
+
+exports.getShadingPatternFromIR = getShadingPatternFromIR;
+exports.TilingPattern = TilingPattern;
+}));
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsDisplayCanvas = {}), root.pdfjsSharedUtil,
+ root.pdfjsDisplayPatternHelper, root.pdfjsDisplayWebGL);
+ }
+}(this, function (exports, sharedUtil, displayPatternHelper, displayWebGL) {
+
+var FONT_IDENTITY_MATRIX = sharedUtil.FONT_IDENTITY_MATRIX;
+var IDENTITY_MATRIX = sharedUtil.IDENTITY_MATRIX;
+var ImageKind = sharedUtil.ImageKind;
+var OPS = sharedUtil.OPS;
+var TextRenderingMode = sharedUtil.TextRenderingMode;
+var Uint32ArrayView = sharedUtil.Uint32ArrayView;
+var Util = sharedUtil.Util;
+var assert = sharedUtil.assert;
+var info = sharedUtil.info;
+var isNum = sharedUtil.isNum;
+var isArray = sharedUtil.isArray;
+var error = sharedUtil.error;
+var shadow = sharedUtil.shadow;
+var warn = sharedUtil.warn;
+var TilingPattern = displayPatternHelper.TilingPattern;
+var getShadingPatternFromIR = displayPatternHelper.getShadingPatternFromIR;
+var WebGLUtils = displayWebGL.WebGLUtils;
+
+// <canvas> contexts store most of the state we need natively.
+// However, PDF needs a bit more state, which we store here.
+
+// Minimal font size that would be used during canvas fillText operations.
+var MIN_FONT_SIZE = 16;
+// Maximum font size that would be used during canvas fillText operations.
+var MAX_FONT_SIZE = 100;
+var MAX_GROUP_SIZE = 4096;
+
+// Heuristic value used when enforcing minimum line widths.
+var MIN_WIDTH_FACTOR = 0.65;
+
+var COMPILE_TYPE3_GLYPHS = true;
+var MAX_SIZE_TO_COMPILE = 1000;
+
+var FULL_CHUNK_HEIGHT = 16;
+
+function createScratchCanvas(width, height) {
+ var canvas = document.createElement('canvas');
+ canvas.width = width;
+ canvas.height = height;
+ return canvas;
+}
+
+function addContextCurrentTransform(ctx) {
+ // If the context doesn't expose a `mozCurrentTransform`, add a JS based one.
+ if (!ctx.mozCurrentTransform) {
+ ctx._originalSave = ctx.save;
+ ctx._originalRestore = ctx.restore;
+ ctx._originalRotate = ctx.rotate;
+ ctx._originalScale = ctx.scale;
+ ctx._originalTranslate = ctx.translate;
+ ctx._originalTransform = ctx.transform;
+ ctx._originalSetTransform = ctx.setTransform;
+
+ ctx._transformMatrix = ctx._transformMatrix || [1, 0, 0, 1, 0, 0];
+ ctx._transformStack = [];
+
+ Object.defineProperty(ctx, 'mozCurrentTransform', {
+ get: function getCurrentTransform() {
+ return this._transformMatrix;
+ }
+ });
+
+ Object.defineProperty(ctx, 'mozCurrentTransformInverse', {
+ get: function getCurrentTransformInverse() {
+ // Calculation done using WolframAlpha:
+ // http://www.wolframalpha.com/input/?
+ // i=Inverse+{{a%2C+c%2C+e}%2C+{b%2C+d%2C+f}%2C+{0%2C+0%2C+1}}
+
+ var m = this._transformMatrix;
+ var a = m[0], b = m[1], c = m[2], d = m[3], e = m[4], f = m[5];
+
+ var ad_bc = a * d - b * c;
+ var bc_ad = b * c - a * d;
+
+ return [
+ d / ad_bc,
+ b / bc_ad,
+ c / bc_ad,
+ a / ad_bc,
+ (d * e - c * f) / bc_ad,
+ (b * e - a * f) / ad_bc
+ ];
+ }
+ });
+
+ ctx.save = function ctxSave() {
+ var old = this._transformMatrix;
+ this._transformStack.push(old);
+ this._transformMatrix = old.slice(0, 6);
+
+ this._originalSave();
+ };
+
+ ctx.restore = function ctxRestore() {
+ var prev = this._transformStack.pop();
+ if (prev) {
+ this._transformMatrix = prev;
+ this._originalRestore();
+ }
+ };
+
+ ctx.translate = function ctxTranslate(x, y) {
+ var m = this._transformMatrix;
+ m[4] = m[0] * x + m[2] * y + m[4];
+ m[5] = m[1] * x + m[3] * y + m[5];
+
+ this._originalTranslate(x, y);
+ };
+
+ ctx.scale = function ctxScale(x, y) {
+ var m = this._transformMatrix;
+ m[0] = m[0] * x;
+ m[1] = m[1] * x;
+ m[2] = m[2] * y;
+ m[3] = m[3] * y;
+
+ this._originalScale(x, y);
+ };
+
+ ctx.transform = function ctxTransform(a, b, c, d, e, f) {
+ var m = this._transformMatrix;
+ this._transformMatrix = [
+ m[0] * a + m[2] * b,
+ m[1] * a + m[3] * b,
+ m[0] * c + m[2] * d,
+ m[1] * c + m[3] * d,
+ m[0] * e + m[2] * f + m[4],
+ m[1] * e + m[3] * f + m[5]
+ ];
+
+ ctx._originalTransform(a, b, c, d, e, f);
+ };
+
+ ctx.setTransform = function ctxSetTransform(a, b, c, d, e, f) {
+ this._transformMatrix = [a, b, c, d, e, f];
+
+ ctx._originalSetTransform(a, b, c, d, e, f);
+ };
+
+ ctx.rotate = function ctxRotate(angle) {
+ var cosValue = Math.cos(angle);
+ var sinValue = Math.sin(angle);
+
+ var m = this._transformMatrix;
+ this._transformMatrix = [
+ m[0] * cosValue + m[2] * sinValue,
+ m[1] * cosValue + m[3] * sinValue,
+ m[0] * (-sinValue) + m[2] * cosValue,
+ m[1] * (-sinValue) + m[3] * cosValue,
+ m[4],
+ m[5]
+ ];
+
+ this._originalRotate(angle);
+ };
+ }
+}
+
+var CachedCanvases = (function CachedCanvasesClosure() {
+ function CachedCanvases() {
+ this.cache = Object.create(null);
+ }
+ CachedCanvases.prototype = {
+ getCanvas: function CachedCanvases_getCanvas(id, width, height,
+ trackTransform) {
+ var canvasEntry;
+ if (this.cache[id] !== undefined) {
+ canvasEntry = this.cache[id];
+ canvasEntry.canvas.width = width;
+ canvasEntry.canvas.height = height;
+ // reset canvas transform for emulated mozCurrentTransform, if needed
+ canvasEntry.context.setTransform(1, 0, 0, 1, 0, 0);
+ } else {
+ var canvas = createScratchCanvas(width, height);
+ var ctx = canvas.getContext('2d');
+ if (trackTransform) {
+ addContextCurrentTransform(ctx);
+ }
+ this.cache[id] = canvasEntry = {canvas: canvas, context: ctx};
+ }
+ return canvasEntry;
+ },
+ clear: function () {
+ for (var id in this.cache) {
+ var canvasEntry = this.cache[id];
+ // Zeroing the width and height causes Firefox to release graphics
+ // resources immediately, which can greatly reduce memory consumption.
+ canvasEntry.canvas.width = 0;
+ canvasEntry.canvas.height = 0;
+ delete this.cache[id];
+ }
+ }
+ };
+ return CachedCanvases;
+})();
+
+function compileType3Glyph(imgData) {
+ var POINT_TO_PROCESS_LIMIT = 1000;
+
+ var width = imgData.width, height = imgData.height;
+ var i, j, j0, width1 = width + 1;
+ var points = new Uint8Array(width1 * (height + 1));
+ var POINT_TYPES =
+ new Uint8Array([0, 2, 4, 0, 1, 0, 5, 4, 8, 10, 0, 8, 0, 2, 1, 0]);
+
+ // decodes bit-packed mask data
+ var lineSize = (width + 7) & ~7, data0 = imgData.data;
+ var data = new Uint8Array(lineSize * height), pos = 0, ii;
+ for (i = 0, ii = data0.length; i < ii; i++) {
+ var mask = 128, elem = data0[i];
+ while (mask > 0) {
+ data[pos++] = (elem & mask) ? 0 : 255;
+ mask >>= 1;
+ }
+ }
+
+ // finding iteresting points: every point is located between mask pixels,
+ // so there will be points of the (width + 1)x(height + 1) grid. Every point
+ // will have flags assigned based on neighboring mask pixels:
+ // 4 | 8
+ // --P--
+ // 2 | 1
+ // We are interested only in points with the flags:
+ // - outside corners: 1, 2, 4, 8;
+ // - inside corners: 7, 11, 13, 14;
+ // - and, intersections: 5, 10.
+ var count = 0;
+ pos = 0;
+ if (data[pos] !== 0) {
+ points[0] = 1;
+ ++count;
+ }
+ for (j = 1; j < width; j++) {
+ if (data[pos] !== data[pos + 1]) {
+ points[j] = data[pos] ? 2 : 1;
+ ++count;
+ }
+ pos++;
+ }
+ if (data[pos] !== 0) {
+ points[j] = 2;
+ ++count;
+ }
+ for (i = 1; i < height; i++) {
+ pos = i * lineSize;
+ j0 = i * width1;
+ if (data[pos - lineSize] !== data[pos]) {
+ points[j0] = data[pos] ? 1 : 8;
+ ++count;
+ }
+ // 'sum' is the position of the current pixel configuration in the 'TYPES'
+ // array (in order 8-1-2-4, so we can use '>>2' to shift the column).
+ var sum = (data[pos] ? 4 : 0) + (data[pos - lineSize] ? 8 : 0);
+ for (j = 1; j < width; j++) {
+ sum = (sum >> 2) + (data[pos + 1] ? 4 : 0) +
+ (data[pos - lineSize + 1] ? 8 : 0);
+ if (POINT_TYPES[sum]) {
+ points[j0 + j] = POINT_TYPES[sum];
+ ++count;
+ }
+ pos++;
+ }
+ if (data[pos - lineSize] !== data[pos]) {
+ points[j0 + j] = data[pos] ? 2 : 4;
+ ++count;
+ }
+
+ if (count > POINT_TO_PROCESS_LIMIT) {
+ return null;
+ }
+ }
+
+ pos = lineSize * (height - 1);
+ j0 = i * width1;
+ if (data[pos] !== 0) {
+ points[j0] = 8;
+ ++count;
+ }
+ for (j = 1; j < width; j++) {
+ if (data[pos] !== data[pos + 1]) {
+ points[j0 + j] = data[pos] ? 4 : 8;
+ ++count;
+ }
+ pos++;
+ }
+ if (data[pos] !== 0) {
+ points[j0 + j] = 4;
+ ++count;
+ }
+ if (count > POINT_TO_PROCESS_LIMIT) {
+ return null;
+ }
+
+ // building outlines
+ var steps = new Int32Array([0, width1, -1, 0, -width1, 0, 0, 0, 1]);
+ var outlines = [];
+ for (i = 0; count && i <= height; i++) {
+ var p = i * width1;
+ var end = p + width;
+ while (p < end && !points[p]) {
+ p++;
+ }
+ if (p === end) {
+ continue;
+ }
+ var coords = [p % width1, i];
+
+ var type = points[p], p0 = p, pp;
+ do {
+ var step = steps[type];
+ do {
+ p += step;
+ } while (!points[p]);
+
+ pp = points[p];
+ if (pp !== 5 && pp !== 10) {
+ // set new direction
+ type = pp;
+ // delete mark
+ points[p] = 0;
+ } else { // type is 5 or 10, ie, a crossing
+ // set new direction
+ type = pp & ((0x33 * type) >> 4);
+ // set new type for "future hit"
+ points[p] &= (type >> 2 | type << 2);
+ }
+
+ coords.push(p % width1);
+ coords.push((p / width1) | 0);
+ --count;
+ } while (p0 !== p);
+ outlines.push(coords);
+ --i;
+ }
+
+ var drawOutline = function(c) {
+ c.save();
+ // the path shall be painted in [0..1]x[0..1] space
+ c.scale(1 / width, -1 / height);
+ c.translate(0, -height);
+ c.beginPath();
+ for (var i = 0, ii = outlines.length; i < ii; i++) {
+ var o = outlines[i];
+ c.moveTo(o[0], o[1]);
+ for (var j = 2, jj = o.length; j < jj; j += 2) {
+ c.lineTo(o[j], o[j+1]);
+ }
+ }
+ c.fill();
+ c.beginPath();
+ c.restore();
+ };
+
+ return drawOutline;
+}
+
+var CanvasExtraState = (function CanvasExtraStateClosure() {
+ function CanvasExtraState(old) {
+ // Are soft masks and alpha values shapes or opacities?
+ this.alphaIsShape = false;
+ this.fontSize = 0;
+ this.fontSizeScale = 1;
+ this.textMatrix = IDENTITY_MATRIX;
+ this.textMatrixScale = 1;
+ this.fontMatrix = FONT_IDENTITY_MATRIX;
+ this.leading = 0;
+ // Current point (in user coordinates)
+ this.x = 0;
+ this.y = 0;
+ // Start of text line (in text coordinates)
+ this.lineX = 0;
+ this.lineY = 0;
+ // Character and word spacing
+ this.charSpacing = 0;
+ this.wordSpacing = 0;
+ this.textHScale = 1;
+ this.textRenderingMode = TextRenderingMode.FILL;
+ this.textRise = 0;
+ // Default fore and background colors
+ this.fillColor = '#000000';
+ this.strokeColor = '#000000';
+ this.patternFill = false;
+ // Note: fill alpha applies to all non-stroking operations
+ this.fillAlpha = 1;
+ this.strokeAlpha = 1;
+ this.lineWidth = 1;
+ this.activeSMask = null; // nonclonable field (see the save method below)
+
+ this.old = old;
+ }
+
+ CanvasExtraState.prototype = {
+ clone: function CanvasExtraState_clone() {
+ return Object.create(this);
+ },
+ setCurrentPoint: function CanvasExtraState_setCurrentPoint(x, y) {
+ this.x = x;
+ this.y = y;
+ }
+ };
+ return CanvasExtraState;
+})();
+
+var CanvasGraphics = (function CanvasGraphicsClosure() {
+ // Defines the time the executeOperatorList is going to be executing
+ // before it stops and shedules a continue of execution.
+ var EXECUTION_TIME = 15;
+ // Defines the number of steps before checking the execution time
+ var EXECUTION_STEPS = 10;
+
+ function CanvasGraphics(canvasCtx, commonObjs, objs, imageLayer) {
+ this.ctx = canvasCtx;
+ this.current = new CanvasExtraState();
+ this.stateStack = [];
+ this.pendingClip = null;
+ this.pendingEOFill = false;
+ this.res = null;
+ this.xobjs = null;
+ this.commonObjs = commonObjs;
+ this.objs = objs;
+ this.imageLayer = imageLayer;
+ this.groupStack = [];
+ this.processingType3 = null;
+ // Patterns are painted relative to the initial page/form transform, see pdf
+ // spec 8.7.2 NOTE 1.
+ this.baseTransform = null;
+ this.baseTransformStack = [];
+ this.groupLevel = 0;
+ this.smaskStack = [];
+ this.smaskCounter = 0;
+ this.tempSMask = null;
+ this.cachedCanvases = new CachedCanvases();
+ if (canvasCtx) {
+ // NOTE: if mozCurrentTransform is polyfilled, then the current state of
+ // the transformation must already be set in canvasCtx._transformMatrix.
+ addContextCurrentTransform(canvasCtx);
+ }
+ this.cachedGetSinglePixelWidth = null;
+ }
+
+ function putBinaryImageData(ctx, imgData) {
+ if (typeof ImageData !== 'undefined' && imgData instanceof ImageData) {
+ ctx.putImageData(imgData, 0, 0);
+ return;
+ }
+
+ // Put the image data to the canvas in chunks, rather than putting the
+ // whole image at once. This saves JS memory, because the ImageData object
+ // is smaller. It also possibly saves C++ memory within the implementation
+ // of putImageData(). (E.g. in Firefox we make two short-lived copies of
+ // the data passed to putImageData()). |n| shouldn't be too small, however,
+ // because too many putImageData() calls will slow things down.
+ //
+ // Note: as written, if the last chunk is partial, the putImageData() call
+ // will (conceptually) put pixels past the bounds of the canvas. But
+ // that's ok; any such pixels are ignored.
+
+ var height = imgData.height, width = imgData.width;
+ var partialChunkHeight = height % FULL_CHUNK_HEIGHT;
+ var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT;
+ var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1;
+
+ var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT);
+ var srcPos = 0, destPos;
+ var src = imgData.data;
+ var dest = chunkImgData.data;
+ var i, j, thisChunkHeight, elemsInThisChunk;
+
+ // There are multiple forms in which the pixel data can be passed, and
+ // imgData.kind tells us which one this is.
+ if (imgData.kind === ImageKind.GRAYSCALE_1BPP) {
+ // Grayscale, 1 bit per pixel (i.e. black-and-white).
+ var srcLength = src.byteLength;
+ var dest32 = 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) ? FULL_CHUNK_HEIGHT : partialChunkHeight;
+ destPos = 0;
+ for (j = 0; j < thisChunkHeight; j++) {
+ var srcDiff = srcLength - srcPos;
+ var k = 0;
+ var kEnd = (srcDiff > fullSrcDiff) ? width : srcDiff * 8 - 7;
+ var kEndUnrolled = kEnd & ~7;
+ var mask = 0;
+ var srcByte = 0;
+ for (; k < kEndUnrolled; k += 8) {
+ srcByte = src[srcPos++];
+ dest32[destPos++] = (srcByte & 128) ? white : black;
+ dest32[destPos++] = (srcByte & 64) ? white : black;
+ dest32[destPos++] = (srcByte & 32) ? white : black;
+ dest32[destPos++] = (srcByte & 16) ? white : black;
+ dest32[destPos++] = (srcByte & 8) ? white : black;
+ dest32[destPos++] = (srcByte & 4) ? white : black;
+ dest32[destPos++] = (srcByte & 2) ? white : black;
+ dest32[destPos++] = (srcByte & 1) ? white : black;
+ }
+ for (; k < kEnd; k++) {
+ if (mask === 0) {
+ srcByte = src[srcPos++];
+ mask = 128;
+ }
+
+ dest32[destPos++] = (srcByte & mask) ? white : black;
+ mask >>= 1;
+ }
+ }
+ // We ran out of input. Make all remaining pixels transparent.
+ while (destPos < dest32DataLength) {
+ dest32[destPos++] = 0;
+ }
+
+ ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
+ }
+ } else if (imgData.kind === ImageKind.RGBA_32BPP) {
+ // RGBA, 32-bits per pixel.
+
+ j = 0;
+ elemsInThisChunk = width * FULL_CHUNK_HEIGHT * 4;
+ for (i = 0; i < fullChunks; i++) {
+ dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
+ srcPos += elemsInThisChunk;
+
+ ctx.putImageData(chunkImgData, 0, j);
+ j += FULL_CHUNK_HEIGHT;
+ }
+ if (i < totalChunks) {
+ elemsInThisChunk = width * partialChunkHeight * 4;
+ dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
+ ctx.putImageData(chunkImgData, 0, j);
+ }
+
+ } else if (imgData.kind === ImageKind.RGB_24BPP) {
+ // RGB, 24-bits per pixel.
+ thisChunkHeight = FULL_CHUNK_HEIGHT;
+ elemsInThisChunk = width * thisChunkHeight;
+ for (i = 0; i < totalChunks; i++) {
+ if (i >= fullChunks) {
+ thisChunkHeight = partialChunkHeight;
+ elemsInThisChunk = width * thisChunkHeight;
+ }
+
+ destPos = 0;
+ for (j = elemsInThisChunk; j--;) {
+ dest[destPos++] = src[srcPos++];
+ dest[destPos++] = src[srcPos++];
+ dest[destPos++] = src[srcPos++];
+ dest[destPos++] = 255;
+ }
+ ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
+ }
+ } else {
+ error('bad image kind: ' + imgData.kind);
+ }
+ }
+
+ function putBinaryImageMask(ctx, imgData) {
+ var height = imgData.height, width = imgData.width;
+ var partialChunkHeight = height % FULL_CHUNK_HEIGHT;
+ var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT;
+ var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1;
+
+ var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT);
+ var srcPos = 0;
+ var src = imgData.data;
+ var dest = chunkImgData.data;
+
+ for (var i = 0; i < totalChunks; i++) {
+ var thisChunkHeight =
+ (i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight;
+
+ // Expand the mask so it can be used by the canvas. Any required
+ // inversion has already been handled.
+ var destPos = 3; // alpha component offset
+ for (var j = 0; j < thisChunkHeight; j++) {
+ var mask = 0;
+ for (var k = 0; k < width; k++) {
+ if (!mask) {
+ var elem = src[srcPos++];
+ mask = 128;
+ }
+ dest[destPos] = (elem & mask) ? 0 : 255;
+ destPos += 4;
+ mask >>= 1;
+ }
+ }
+ ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
+ }
+ }
+
+ function copyCtxState(sourceCtx, destCtx) {
+ var properties = ['strokeStyle', 'fillStyle', 'fillRule', 'globalAlpha',
+ 'lineWidth', 'lineCap', 'lineJoin', 'miterLimit',
+ 'globalCompositeOperation', 'font'];
+ for (var i = 0, ii = properties.length; i < ii; i++) {
+ var property = properties[i];
+ if (sourceCtx[property] !== undefined) {
+ destCtx[property] = sourceCtx[property];
+ }
+ }
+ if (sourceCtx.setLineDash !== undefined) {
+ destCtx.setLineDash(sourceCtx.getLineDash());
+ destCtx.lineDashOffset = sourceCtx.lineDashOffset;
+ } else if (sourceCtx.mozDashOffset !== undefined) {
+ destCtx.mozDash = sourceCtx.mozDash;
+ destCtx.mozDashOffset = sourceCtx.mozDashOffset;
+ }
+ }
+
+ function composeSMaskBackdrop(bytes, r0, g0, b0) {
+ var length = bytes.length;
+ for (var i = 3; i < length; i += 4) {
+ var alpha = bytes[i];
+ if (alpha === 0) {
+ bytes[i - 3] = r0;
+ bytes[i - 2] = g0;
+ bytes[i - 1] = b0;
+ } else if (alpha < 255) {
+ var alpha_ = 255 - alpha;
+ bytes[i - 3] = (bytes[i - 3] * alpha + r0 * alpha_) >> 8;
+ bytes[i - 2] = (bytes[i - 2] * alpha + g0 * alpha_) >> 8;
+ bytes[i - 1] = (bytes[i - 1] * alpha + b0 * alpha_) >> 8;
+ }
+ }
+ }
+
+ function composeSMaskAlpha(maskData, layerData, transferMap) {
+ var length = maskData.length;
+ var scale = 1 / 255;
+ for (var i = 3; i < length; i += 4) {
+ var alpha = transferMap ? transferMap[maskData[i]] : maskData[i];
+ layerData[i] = (layerData[i] * alpha * scale) | 0;
+ }
+ }
+
+ function composeSMaskLuminosity(maskData, layerData, transferMap) {
+ var length = maskData.length;
+ for (var i = 3; i < length; i += 4) {
+ var y = (maskData[i - 3] * 77) + // * 0.3 / 255 * 0x10000
+ (maskData[i - 2] * 152) + // * 0.59 ....
+ (maskData[i - 1] * 28); // * 0.11 ....
+ layerData[i] = transferMap ?
+ (layerData[i] * transferMap[y >> 8]) >> 8 :
+ (layerData[i] * y) >> 16;
+ }
+ }
+
+ function genericComposeSMask(maskCtx, layerCtx, width, height,
+ subtype, backdrop, transferMap) {
+ var hasBackdrop = !!backdrop;
+ var r0 = hasBackdrop ? backdrop[0] : 0;
+ var g0 = hasBackdrop ? backdrop[1] : 0;
+ var b0 = hasBackdrop ? backdrop[2] : 0;
+
+ var composeFn;
+ if (subtype === 'Luminosity') {
+ composeFn = composeSMaskLuminosity;
+ } else {
+ composeFn = composeSMaskAlpha;
+ }
+
+ // processing image in chunks to save memory
+ var PIXELS_TO_PROCESS = 1048576;
+ var chunkSize = Math.min(height, Math.ceil(PIXELS_TO_PROCESS / width));
+ for (var row = 0; row < height; row += chunkSize) {
+ var chunkHeight = Math.min(chunkSize, height - row);
+ var maskData = maskCtx.getImageData(0, row, width, chunkHeight);
+ var layerData = layerCtx.getImageData(0, row, width, chunkHeight);
+
+ if (hasBackdrop) {
+ composeSMaskBackdrop(maskData.data, r0, g0, b0);
+ }
+ composeFn(maskData.data, layerData.data, transferMap);
+
+ maskCtx.putImageData(layerData, 0, row);
+ }
+ }
+
+ function composeSMask(ctx, smask, layerCtx) {
+ var mask = smask.canvas;
+ var maskCtx = smask.context;
+
+ ctx.setTransform(smask.scaleX, 0, 0, smask.scaleY,
+ smask.offsetX, smask.offsetY);
+
+ var backdrop = smask.backdrop || null;
+ if (!smask.transferMap && WebGLUtils.isEnabled) {
+ var composed = WebGLUtils.composeSMask(layerCtx.canvas, mask,
+ {subtype: smask.subtype, backdrop: backdrop});
+ ctx.setTransform(1, 0, 0, 1, 0, 0);
+ ctx.drawImage(composed, smask.offsetX, smask.offsetY);
+ return;
+ }
+ genericComposeSMask(maskCtx, layerCtx, mask.width, mask.height,
+ smask.subtype, backdrop, smask.transferMap);
+ ctx.drawImage(mask, 0, 0);
+ }
+
+ var LINE_CAP_STYLES = ['butt', 'round', 'square'];
+ var LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];
+ var NORMAL_CLIP = {};
+ var EO_CLIP = {};
+
+ CanvasGraphics.prototype = {
+
+ beginDrawing: function CanvasGraphics_beginDrawing(transform, viewport,
+ transparency) {
+ // For pdfs that use blend modes we have to clear the canvas else certain
+ // blend modes can look wrong since we'd be blending with a white
+ // backdrop. The problem with a transparent backdrop though is we then
+ // don't get sub pixel anti aliasing on text, creating temporary
+ // transparent canvas when we have blend modes.
+ var width = this.ctx.canvas.width;
+ var height = this.ctx.canvas.height;
+
+ this.ctx.save();
+ this.ctx.fillStyle = 'rgb(255, 255, 255)';
+ this.ctx.fillRect(0, 0, width, height);
+ this.ctx.restore();
+
+ if (transparency) {
+ var transparentCanvas = this.cachedCanvases.getCanvas(
+ 'transparent', width, height, true);
+ this.compositeCtx = this.ctx;
+ this.transparentCanvas = transparentCanvas.canvas;
+ this.ctx = transparentCanvas.context;
+ this.ctx.save();
+ // The transform can be applied before rendering, transferring it to
+ // the new canvas.
+ this.ctx.transform.apply(this.ctx,
+ this.compositeCtx.mozCurrentTransform);
+ }
+
+ this.ctx.save();
+ if (transform) {
+ this.ctx.transform.apply(this.ctx, transform);
+ }
+ this.ctx.transform.apply(this.ctx, viewport.transform);
+
+ this.baseTransform = this.ctx.mozCurrentTransform.slice();
+
+ if (this.imageLayer) {
+ this.imageLayer.beginLayout();
+ }
+ },
+
+ executeOperatorList: function CanvasGraphics_executeOperatorList(
+ operatorList,
+ executionStartIdx, continueCallback,
+ stepper) {
+ var argsArray = operatorList.argsArray;
+ var fnArray = operatorList.fnArray;
+ var i = executionStartIdx || 0;
+ var argsArrayLen = argsArray.length;
+
+ // Sometimes the OperatorList to execute is empty.
+ if (argsArrayLen === i) {
+ return i;
+ }
+
+ var chunkOperations = (argsArrayLen - i > EXECUTION_STEPS &&
+ typeof continueCallback === 'function');
+ var endTime = chunkOperations ? Date.now() + EXECUTION_TIME : 0;
+ var steps = 0;
+
+ var commonObjs = this.commonObjs;
+ var objs = this.objs;
+ var fnId;
+
+ while (true) {
+ if (stepper !== undefined && i === stepper.nextBreakPoint) {
+ stepper.breakIt(i, continueCallback);
+ return i;
+ }
+
+ fnId = fnArray[i];
+
+ if (fnId !== OPS.dependency) {
+ this[fnId].apply(this, argsArray[i]);
+ } else {
+ var deps = argsArray[i];
+ for (var n = 0, nn = deps.length; n < nn; n++) {
+ var depObjId = deps[n];
+ var common = depObjId[0] === 'g' && depObjId[1] === '_';
+ var objsPool = common ? commonObjs : objs;
+
+ // If the promise isn't resolved yet, add the continueCallback
+ // to the promise and bail out.
+ if (!objsPool.isResolved(depObjId)) {
+ objsPool.get(depObjId, continueCallback);
+ return i;
+ }
+ }
+ }
+
+ i++;
+
+ // If the entire operatorList was executed, stop as were done.
+ if (i === argsArrayLen) {
+ return i;
+ }
+
+ // If the execution took longer then a certain amount of time and
+ // `continueCallback` is specified, interrupt the execution.
+ if (chunkOperations && ++steps > EXECUTION_STEPS) {
+ if (Date.now() > endTime) {
+ continueCallback();
+ return i;
+ }
+ steps = 0;
+ }
+
+ // If the operatorList isn't executed completely yet OR the execution
+ // time was short enough, do another execution round.
+ }
+ },
+
+ endDrawing: function CanvasGraphics_endDrawing() {
+ this.ctx.restore();
+
+ if (this.transparentCanvas) {
+ this.ctx = this.compositeCtx;
+ this.ctx.drawImage(this.transparentCanvas, 0, 0);
+ this.transparentCanvas = null;
+ }
+
+ this.cachedCanvases.clear();
+ WebGLUtils.clear();
+
+ if (this.imageLayer) {
+ this.imageLayer.endLayout();
+ }
+ },
+
+ // Graphics state
+ setLineWidth: function CanvasGraphics_setLineWidth(width) {
+ this.current.lineWidth = width;
+ this.ctx.lineWidth = width;
+ },
+ setLineCap: function CanvasGraphics_setLineCap(style) {
+ this.ctx.lineCap = LINE_CAP_STYLES[style];
+ },
+ setLineJoin: function CanvasGraphics_setLineJoin(style) {
+ this.ctx.lineJoin = LINE_JOIN_STYLES[style];
+ },
+ setMiterLimit: function CanvasGraphics_setMiterLimit(limit) {
+ this.ctx.miterLimit = limit;
+ },
+ setDash: function CanvasGraphics_setDash(dashArray, dashPhase) {
+ var ctx = this.ctx;
+ if (ctx.setLineDash !== undefined) {
+ ctx.setLineDash(dashArray);
+ ctx.lineDashOffset = dashPhase;
+ } else {
+ ctx.mozDash = dashArray;
+ ctx.mozDashOffset = dashPhase;
+ }
+ },
+ setRenderingIntent: function CanvasGraphics_setRenderingIntent(intent) {
+ // Maybe if we one day fully support color spaces this will be important
+ // for now we can ignore.
+ // TODO set rendering intent?
+ },
+ setFlatness: function CanvasGraphics_setFlatness(flatness) {
+ // There's no way to control this with canvas, but we can safely ignore.
+ // TODO set flatness?
+ },
+ setGState: function CanvasGraphics_setGState(states) {
+ for (var i = 0, ii = states.length; i < ii; i++) {
+ var state = states[i];
+ var key = state[0];
+ var value = state[1];
+
+ switch (key) {
+ case 'LW':
+ this.setLineWidth(value);
+ break;
+ case 'LC':
+ this.setLineCap(value);
+ break;
+ case 'LJ':
+ this.setLineJoin(value);
+ break;
+ case 'ML':
+ this.setMiterLimit(value);
+ break;
+ case 'D':
+ this.setDash(value[0], value[1]);
+ break;
+ case 'RI':
+ this.setRenderingIntent(value);
+ break;
+ case 'FL':
+ this.setFlatness(value);
+ break;
+ case 'Font':
+ this.setFont(value[0], value[1]);
+ break;
+ case 'CA':
+ this.current.strokeAlpha = state[1];
+ break;
+ case 'ca':
+ this.current.fillAlpha = state[1];
+ this.ctx.globalAlpha = state[1];
+ break;
+ case 'BM':
+ if (value && value.name && (value.name !== 'Normal')) {
+ var mode = value.name.replace(/([A-Z])/g,
+ function(c) {
+ return '-' + c.toLowerCase();
+ }
+ ).substring(1);
+ this.ctx.globalCompositeOperation = mode;
+ if (this.ctx.globalCompositeOperation !== mode) {
+ warn('globalCompositeOperation "' + mode +
+ '" is not supported');
+ }
+ } else {
+ this.ctx.globalCompositeOperation = 'source-over';
+ }
+ break;
+ case 'SMask':
+ if (this.current.activeSMask) {
+ this.endSMaskGroup();
+ }
+ this.current.activeSMask = value ? this.tempSMask : null;
+ if (this.current.activeSMask) {
+ this.beginSMaskGroup();
+ }
+ this.tempSMask = null;
+ break;
+ }
+ }
+ },
+ beginSMaskGroup: function CanvasGraphics_beginSMaskGroup() {
+
+ var activeSMask = this.current.activeSMask;
+ var drawnWidth = activeSMask.canvas.width;
+ var drawnHeight = activeSMask.canvas.height;
+ var cacheId = 'smaskGroupAt' + this.groupLevel;
+ var scratchCanvas = this.cachedCanvases.getCanvas(
+ cacheId, drawnWidth, drawnHeight, true);
+
+ var currentCtx = this.ctx;
+ var currentTransform = currentCtx.mozCurrentTransform;
+ this.ctx.save();
+
+ var groupCtx = scratchCanvas.context;
+ groupCtx.scale(1 / activeSMask.scaleX, 1 / activeSMask.scaleY);
+ groupCtx.translate(-activeSMask.offsetX, -activeSMask.offsetY);
+ groupCtx.transform.apply(groupCtx, currentTransform);
+
+ 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();
+ copyCtxState(groupCtx, this.ctx);
+ },
+ save: function CanvasGraphics_save() {
+ this.ctx.save();
+ var old = this.current;
+ this.stateStack.push(old);
+ this.current = old.clone();
+ this.current.activeSMask = null;
+ },
+ restore: function CanvasGraphics_restore() {
+ if (this.stateStack.length !== 0) {
+ if (this.current.activeSMask !== null) {
+ this.endSMaskGroup();
+ }
+
+ this.current = this.stateStack.pop();
+ this.ctx.restore();
+
+ // Ensure that the clipping path is reset (fixes issue6413.pdf).
+ this.pendingClip = null;
+
+ this.cachedGetSinglePixelWidth = null;
+ }
+ },
+ transform: function CanvasGraphics_transform(a, b, c, d, e, f) {
+ this.ctx.transform(a, b, c, d, e, f);
+
+ this.cachedGetSinglePixelWidth = null;
+ },
+
+ // Path
+ constructPath: function CanvasGraphics_constructPath(ops, args) {
+ var ctx = this.ctx;
+ var current = this.current;
+ var x = current.x, y = current.y;
+ for (var i = 0, j = 0, ii = ops.length; i < ii; i++) {
+ switch (ops[i] | 0) {
+ case OPS.rectangle:
+ x = args[j++];
+ y = args[j++];
+ var width = args[j++];
+ var height = args[j++];
+ if (width === 0) {
+ width = this.getSinglePixelWidth();
+ }
+ if (height === 0) {
+ height = this.getSinglePixelWidth();
+ }
+ var xw = x + width;
+ var yh = y + height;
+ this.ctx.moveTo(x, y);
+ this.ctx.lineTo(xw, y);
+ this.ctx.lineTo(xw, yh);
+ this.ctx.lineTo(x, yh);
+ this.ctx.lineTo(x, y);
+ this.ctx.closePath();
+ break;
+ case OPS.moveTo:
+ x = args[j++];
+ y = args[j++];
+ ctx.moveTo(x, y);
+ break;
+ case OPS.lineTo:
+ x = args[j++];
+ y = args[j++];
+ ctx.lineTo(x, y);
+ break;
+ case OPS.curveTo:
+ x = args[j + 4];
+ y = args[j + 5];
+ ctx.bezierCurveTo(args[j], args[j + 1], args[j + 2], args[j + 3],
+ x, y);
+ j += 6;
+ break;
+ case OPS.curveTo2:
+ ctx.bezierCurveTo(x, y, args[j], args[j + 1],
+ args[j + 2], args[j + 3]);
+ x = args[j + 2];
+ y = args[j + 3];
+ j += 4;
+ break;
+ case OPS.curveTo3:
+ x = args[j + 2];
+ y = args[j + 3];
+ ctx.bezierCurveTo(args[j], args[j + 1], x, y, x, y);
+ j += 4;
+ break;
+ case OPS.closePath:
+ ctx.closePath();
+ break;
+ }
+ }
+ current.setCurrentPoint(x, y);
+ },
+ closePath: function CanvasGraphics_closePath() {
+ this.ctx.closePath();
+ },
+ stroke: function CanvasGraphics_stroke(consumePath) {
+ consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
+ var ctx = this.ctx;
+ var strokeColor = this.current.strokeColor;
+ // Prevent drawing too thin lines by enforcing a minimum line width.
+ ctx.lineWidth = Math.max(this.getSinglePixelWidth() * MIN_WIDTH_FACTOR,
+ this.current.lineWidth);
+ // For stroke we want to temporarily change the global alpha to the
+ // stroking alpha.
+ ctx.globalAlpha = this.current.strokeAlpha;
+ if (strokeColor && strokeColor.hasOwnProperty('type') &&
+ strokeColor.type === 'Pattern') {
+ // for patterns, we transform to pattern space, calculate
+ // the pattern, call stroke, and restore to user space
+ ctx.save();
+ ctx.strokeStyle = strokeColor.getPattern(ctx, this);
+ ctx.stroke();
+ ctx.restore();
+ } else {
+ ctx.stroke();
+ }
+ if (consumePath) {
+ this.consumePath();
+ }
+ // Restore the global alpha to the fill alpha
+ ctx.globalAlpha = this.current.fillAlpha;
+ },
+ closeStroke: function CanvasGraphics_closeStroke() {
+ this.closePath();
+ this.stroke();
+ },
+ fill: function CanvasGraphics_fill(consumePath) {
+ consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
+ var ctx = this.ctx;
+ var fillColor = this.current.fillColor;
+ var isPatternFill = this.current.patternFill;
+ var needRestore = false;
+
+ if (isPatternFill) {
+ ctx.save();
+ if (this.baseTransform) {
+ ctx.setTransform.apply(ctx, this.baseTransform);
+ }
+ ctx.fillStyle = fillColor.getPattern(ctx, this);
+ needRestore = true;
+ }
+
+ if (this.pendingEOFill) {
+ if (ctx.mozFillRule !== undefined) {
+ ctx.mozFillRule = 'evenodd';
+ ctx.fill();
+ ctx.mozFillRule = 'nonzero';
+ } else {
+ ctx.fill('evenodd');
+ }
+ this.pendingEOFill = false;
+ } else {
+ ctx.fill();
+ }
+
+ if (needRestore) {
+ ctx.restore();
+ }
+ if (consumePath) {
+ this.consumePath();
+ }
+ },
+ eoFill: function CanvasGraphics_eoFill() {
+ this.pendingEOFill = true;
+ this.fill();
+ },
+ fillStroke: function CanvasGraphics_fillStroke() {
+ this.fill(false);
+ this.stroke(false);
+
+ this.consumePath();
+ },
+ eoFillStroke: function CanvasGraphics_eoFillStroke() {
+ this.pendingEOFill = true;
+ this.fillStroke();
+ },
+ closeFillStroke: function CanvasGraphics_closeFillStroke() {
+ this.closePath();
+ this.fillStroke();
+ },
+ closeEOFillStroke: function CanvasGraphics_closeEOFillStroke() {
+ this.pendingEOFill = true;
+ this.closePath();
+ this.fillStroke();
+ },
+ endPath: function CanvasGraphics_endPath() {
+ this.consumePath();
+ },
+
+ // Clipping
+ clip: function CanvasGraphics_clip() {
+ this.pendingClip = NORMAL_CLIP;
+ },
+ eoClip: function CanvasGraphics_eoClip() {
+ this.pendingClip = EO_CLIP;
+ },
+
+ // Text
+ beginText: function CanvasGraphics_beginText() {
+ this.current.textMatrix = IDENTITY_MATRIX;
+ this.current.textMatrixScale = 1;
+ this.current.x = this.current.lineX = 0;
+ this.current.y = this.current.lineY = 0;
+ },
+ endText: function CanvasGraphics_endText() {
+ var paths = this.pendingTextPaths;
+ var ctx = this.ctx;
+ if (paths === undefined) {
+ ctx.beginPath();
+ return;
+ }
+
+ ctx.save();
+ ctx.beginPath();
+ for (var i = 0; i < paths.length; i++) {
+ var path = paths[i];
+ ctx.setTransform.apply(ctx, path.transform);
+ ctx.translate(path.x, path.y);
+ path.addToPath(ctx, path.fontSize);
+ }
+ ctx.restore();
+ ctx.clip();
+ ctx.beginPath();
+ delete this.pendingTextPaths;
+ },
+ setCharSpacing: function CanvasGraphics_setCharSpacing(spacing) {
+ this.current.charSpacing = spacing;
+ },
+ setWordSpacing: function CanvasGraphics_setWordSpacing(spacing) {
+ this.current.wordSpacing = spacing;
+ },
+ setHScale: function CanvasGraphics_setHScale(scale) {
+ this.current.textHScale = scale / 100;
+ },
+ setLeading: function CanvasGraphics_setLeading(leading) {
+ this.current.leading = -leading;
+ },
+ setFont: function CanvasGraphics_setFont(fontRefName, size) {
+ var fontObj = this.commonObjs.get(fontRefName);
+ var current = this.current;
+
+ if (!fontObj) {
+ error('Can\'t find font for ' + fontRefName);
+ }
+
+ current.fontMatrix = (fontObj.fontMatrix ?
+ fontObj.fontMatrix : FONT_IDENTITY_MATRIX);
+
+ // A valid matrix needs all main diagonal elements to be non-zero
+ // This also ensures we bypass FF bugzilla bug #719844.
+ if (current.fontMatrix[0] === 0 ||
+ current.fontMatrix[3] === 0) {
+ warn('Invalid font matrix for font ' + fontRefName);
+ }
+
+ // The spec for Tf (setFont) says that 'size' specifies the font 'scale',
+ // and in some docs this can be negative (inverted x-y axes).
+ if (size < 0) {
+ size = -size;
+ current.fontDirection = -1;
+ } else {
+ current.fontDirection = 1;
+ }
+
+ this.current.font = fontObj;
+ this.current.fontSize = size;
+
+ if (fontObj.isType3Font) {
+ return; // we don't need ctx.font for Type3 fonts
+ }
+
+ var name = fontObj.loadedName || 'sans-serif';
+ var bold = fontObj.black ? (fontObj.bold ? '900' : 'bold') :
+ (fontObj.bold ? 'bold' : 'normal');
+
+ var italic = fontObj.italic ? 'italic' : 'normal';
+ var typeface = '"' + name + '", ' + fontObj.fallbackName;
+
+ // Some font backends cannot handle fonts below certain size.
+ // Keeping the font at minimal size and using the fontSizeScale to change
+ // the current transformation matrix before the fillText/strokeText.
+ // See https://bugzilla.mozilla.org/show_bug.cgi?id=726227
+ var browserFontSize = size < MIN_FONT_SIZE ? MIN_FONT_SIZE :
+ size > MAX_FONT_SIZE ? MAX_FONT_SIZE : size;
+ this.current.fontSizeScale = size / browserFontSize;
+
+ var rule = italic + ' ' + bold + ' ' + browserFontSize + 'px ' + typeface;
+ this.ctx.font = rule;
+ },
+ setTextRenderingMode: function CanvasGraphics_setTextRenderingMode(mode) {
+ this.current.textRenderingMode = mode;
+ },
+ setTextRise: function CanvasGraphics_setTextRise(rise) {
+ this.current.textRise = rise;
+ },
+ moveText: function CanvasGraphics_moveText(x, y) {
+ this.current.x = this.current.lineX += x;
+ this.current.y = this.current.lineY += y;
+ },
+ setLeadingMoveText: function CanvasGraphics_setLeadingMoveText(x, y) {
+ this.setLeading(-y);
+ this.moveText(x, y);
+ },
+ setTextMatrix: function CanvasGraphics_setTextMatrix(a, b, c, d, e, f) {
+ this.current.textMatrix = [a, b, c, d, e, f];
+ this.current.textMatrixScale = Math.sqrt(a * a + b * b);
+
+ this.current.x = this.current.lineX = 0;
+ this.current.y = this.current.lineY = 0;
+ },
+ nextLine: function CanvasGraphics_nextLine() {
+ this.moveText(0, this.current.leading);
+ },
+
+ paintChar: function CanvasGraphics_paintChar(character, x, y) {
+ var ctx = this.ctx;
+ var current = this.current;
+ var font = current.font;
+ var textRenderingMode = current.textRenderingMode;
+ var fontSize = current.fontSize / current.fontSizeScale;
+ var fillStrokeMode = textRenderingMode &
+ TextRenderingMode.FILL_STROKE_MASK;
+ var isAddToPathSet = !!(textRenderingMode &
+ TextRenderingMode.ADD_TO_PATH_FLAG);
+
+ var addToPath;
+ if (font.disableFontFace || isAddToPathSet) {
+ addToPath = font.getPathGenerator(this.commonObjs, character);
+ }
+
+ if (font.disableFontFace) {
+ ctx.save();
+ ctx.translate(x, y);
+ ctx.beginPath();
+ addToPath(ctx, fontSize);
+ if (fillStrokeMode === TextRenderingMode.FILL ||
+ fillStrokeMode === TextRenderingMode.FILL_STROKE) {
+ ctx.fill();
+ }
+ if (fillStrokeMode === TextRenderingMode.STROKE ||
+ fillStrokeMode === TextRenderingMode.FILL_STROKE) {
+ ctx.stroke();
+ }
+ ctx.restore();
+ } else {
+ if (fillStrokeMode === TextRenderingMode.FILL ||
+ fillStrokeMode === TextRenderingMode.FILL_STROKE) {
+ ctx.fillText(character, x, y);
+ }
+ if (fillStrokeMode === TextRenderingMode.STROKE ||
+ fillStrokeMode === TextRenderingMode.FILL_STROKE) {
+ ctx.strokeText(character, x, y);
+ }
+ }
+
+ if (isAddToPathSet) {
+ var paths = this.pendingTextPaths || (this.pendingTextPaths = []);
+ paths.push({
+ transform: ctx.mozCurrentTransform,
+ x: x,
+ y: y,
+ fontSize: fontSize,
+ addToPath: addToPath
+ });
+ }
+ },
+
+ get isFontSubpixelAAEnabled() {
+ // Checks if anti-aliasing is enabled when scaled text is painted.
+ // On Windows GDI scaled fonts looks bad.
+ var ctx = document.createElement('canvas').getContext('2d');
+ ctx.scale(1.5, 1);
+ ctx.fillText('I', 0, 10);
+ var data = ctx.getImageData(0, 0, 10, 10).data;
+ var enabled = false;
+ for (var i = 3; i < data.length; i += 4) {
+ if (data[i] > 0 && data[i] < 255) {
+ enabled = true;
+ break;
+ }
+ }
+ return shadow(this, 'isFontSubpixelAAEnabled', enabled);
+ },
+
+ showText: function CanvasGraphics_showText(glyphs) {
+ var current = this.current;
+ var font = current.font;
+ if (font.isType3Font) {
+ return this.showType3Text(glyphs);
+ }
+
+ var fontSize = current.fontSize;
+ if (fontSize === 0) {
+ return;
+ }
+
+ var ctx = this.ctx;
+ var fontSizeScale = current.fontSizeScale;
+ var charSpacing = current.charSpacing;
+ var wordSpacing = current.wordSpacing;
+ var fontDirection = current.fontDirection;
+ var textHScale = current.textHScale * fontDirection;
+ var glyphsLength = glyphs.length;
+ var vertical = font.vertical;
+ var spacingDir = vertical ? 1 : -1;
+ var defaultVMetrics = font.defaultVMetrics;
+ var widthAdvanceScale = fontSize * current.fontMatrix[0];
+
+ var simpleFillText =
+ current.textRenderingMode === TextRenderingMode.FILL &&
+ !font.disableFontFace;
+
+ ctx.save();
+ ctx.transform.apply(ctx, current.textMatrix);
+ ctx.translate(current.x, current.y + current.textRise);
+
+ if (current.patternFill) {
+ // TODO: Some shading patterns are not applied correctly to text,
+ // e.g. issues 3988 and 5432, and ShowText-ShadingPattern.pdf.
+ ctx.fillStyle = current.fillColor.getPattern(ctx, this);
+ }
+
+ if (fontDirection > 0) {
+ ctx.scale(textHScale, -1);
+ } else {
+ ctx.scale(textHScale, 1);
+ }
+
+ var lineWidth = current.lineWidth;
+ var scale = current.textMatrixScale;
+ if (scale === 0 || lineWidth === 0) {
+ var fillStrokeMode = current.textRenderingMode &
+ TextRenderingMode.FILL_STROKE_MASK;
+ if (fillStrokeMode === TextRenderingMode.STROKE ||
+ fillStrokeMode === TextRenderingMode.FILL_STROKE) {
+ this.cachedGetSinglePixelWidth = null;
+ lineWidth = this.getSinglePixelWidth() * MIN_WIDTH_FACTOR;
+ }
+ } else {
+ lineWidth /= scale;
+ }
+
+ if (fontSizeScale !== 1.0) {
+ ctx.scale(fontSizeScale, fontSizeScale);
+ lineWidth /= fontSizeScale;
+ }
+
+ ctx.lineWidth = lineWidth;
+
+ var x = 0, i;
+ for (i = 0; i < glyphsLength; ++i) {
+ var glyph = glyphs[i];
+ if (isNum(glyph)) {
+ x += spacingDir * glyph * fontSize / 1000;
+ continue;
+ }
+
+ var restoreNeeded = false;
+ var spacing = (glyph.isSpace ? wordSpacing : 0) + charSpacing;
+ var character = glyph.fontChar;
+ var accent = glyph.accent;
+ var scaledX, scaledY, scaledAccentX, scaledAccentY;
+ var width = glyph.width;
+ if (vertical) {
+ var vmetric, vx, vy;
+ vmetric = glyph.vmetric || defaultVMetrics;
+ vx = glyph.vmetric ? vmetric[1] : width * 0.5;
+ vx = -vx * widthAdvanceScale;
+ vy = vmetric[2] * widthAdvanceScale;
+
+ width = vmetric ? -vmetric[0] : width;
+ scaledX = vx / fontSizeScale;
+ scaledY = (x + vy) / fontSizeScale;
+ } else {
+ scaledX = x / fontSizeScale;
+ scaledY = 0;
+ }
+
+ if (font.remeasure && width > 0) {
+ // Some standard fonts may not have the exact width: rescale per
+ // character if measured width is greater than expected glyph width
+ // and subpixel-aa is enabled, otherwise just center the glyph.
+ var measuredWidth = ctx.measureText(character).width * 1000 /
+ fontSize * fontSizeScale;
+ if (width < measuredWidth && this.isFontSubpixelAAEnabled) {
+ var characterScaleX = width / measuredWidth;
+ restoreNeeded = true;
+ ctx.save();
+ ctx.scale(characterScaleX, 1);
+ scaledX /= characterScaleX;
+ } else if (width !== measuredWidth) {
+ scaledX += (width - measuredWidth) / 2000 *
+ fontSize / fontSizeScale;
+ }
+ }
+
+ if (simpleFillText && !accent) {
+ // common case
+ ctx.fillText(character, scaledX, scaledY);
+ } else {
+ this.paintChar(character, scaledX, scaledY);
+ if (accent) {
+ scaledAccentX = scaledX + accent.offset.x / fontSizeScale;
+ scaledAccentY = scaledY - accent.offset.y / fontSizeScale;
+ this.paintChar(accent.fontChar, scaledAccentX, scaledAccentY);
+ }
+ }
+
+ var charWidth = width * widthAdvanceScale + spacing * fontDirection;
+ x += charWidth;
+
+ if (restoreNeeded) {
+ ctx.restore();
+ }
+ }
+ if (vertical) {
+ current.y -= x * textHScale;
+ } else {
+ current.x += x * textHScale;
+ }
+ ctx.restore();
+ },
+
+ showType3Text: function CanvasGraphics_showType3Text(glyphs) {
+ // Type3 fonts - each glyph is a "mini-PDF"
+ var ctx = this.ctx;
+ var current = this.current;
+ var font = current.font;
+ var fontSize = current.fontSize;
+ var fontDirection = current.fontDirection;
+ var spacingDir = font.vertical ? 1 : -1;
+ var charSpacing = current.charSpacing;
+ var wordSpacing = current.wordSpacing;
+ var textHScale = current.textHScale * fontDirection;
+ var fontMatrix = current.fontMatrix || FONT_IDENTITY_MATRIX;
+ var glyphsLength = glyphs.length;
+ var isTextInvisible =
+ current.textRenderingMode === TextRenderingMode.INVISIBLE;
+ var i, glyph, width, spacingLength;
+
+ if (isTextInvisible || fontSize === 0) {
+ return;
+ }
+ this.cachedGetSinglePixelWidth = null;
+
+ ctx.save();
+ ctx.transform.apply(ctx, current.textMatrix);
+ ctx.translate(current.x, current.y);
+
+ ctx.scale(textHScale, fontDirection);
+
+ for (i = 0; i < glyphsLength; ++i) {
+ glyph = glyphs[i];
+ if (isNum(glyph)) {
+ spacingLength = spacingDir * glyph * fontSize / 1000;
+ this.ctx.translate(spacingLength, 0);
+ current.x += spacingLength * textHScale;
+ continue;
+ }
+
+ var spacing = (glyph.isSpace ? wordSpacing : 0) + charSpacing;
+ var operatorList = font.charProcOperatorList[glyph.operatorListId];
+ if (!operatorList) {
+ warn('Type3 character \"' + glyph.operatorListId +
+ '\" is not available');
+ continue;
+ }
+ this.processingType3 = glyph;
+ this.save();
+ ctx.scale(fontSize, fontSize);
+ ctx.transform.apply(ctx, fontMatrix);
+ this.executeOperatorList(operatorList);
+ this.restore();
+
+ var transformed = Util.applyTransform([glyph.width, 0], fontMatrix);
+ width = transformed[0] * fontSize + spacing;
+
+ ctx.translate(width, 0);
+ current.x += width * textHScale;
+ }
+ ctx.restore();
+ this.processingType3 = null;
+ },
+
+ // Type3 fonts
+ setCharWidth: function CanvasGraphics_setCharWidth(xWidth, yWidth) {
+ // We can safely ignore this since the width should be the same
+ // as the width in the Widths array.
+ },
+ setCharWidthAndBounds: function CanvasGraphics_setCharWidthAndBounds(xWidth,
+ yWidth,
+ llx,
+ lly,
+ urx,
+ ury) {
+ // TODO According to the spec we're also suppose to ignore any operators
+ // that set color or include images while processing this type3 font.
+ this.ctx.rect(llx, lly, urx - llx, ury - lly);
+ this.clip();
+ this.endPath();
+ },
+
+ // Color
+ getColorN_Pattern: function CanvasGraphics_getColorN_Pattern(IR) {
+ var pattern;
+ if (IR[0] === 'TilingPattern') {
+ var color = IR[1];
+ var baseTransform = this.baseTransform ||
+ this.ctx.mozCurrentTransform.slice();
+ var self = this;
+ var canvasGraphicsFactory = {
+ createCanvasGraphics: function (ctx) {
+ return new CanvasGraphics(ctx, self.commonObjs, self.objs);
+ }
+ };
+ pattern = new TilingPattern(IR, color, this.ctx, canvasGraphicsFactory,
+ baseTransform);
+ } else {
+ pattern = getShadingPatternFromIR(IR);
+ }
+ return pattern;
+ },
+ setStrokeColorN: function CanvasGraphics_setStrokeColorN(/*...*/) {
+ this.current.strokeColor = this.getColorN_Pattern(arguments);
+ },
+ setFillColorN: function CanvasGraphics_setFillColorN(/*...*/) {
+ this.current.fillColor = this.getColorN_Pattern(arguments);
+ this.current.patternFill = true;
+ },
+ setStrokeRGBColor: function CanvasGraphics_setStrokeRGBColor(r, g, b) {
+ var color = Util.makeCssRgb(r, g, b);
+ this.ctx.strokeStyle = color;
+ this.current.strokeColor = color;
+ },
+ setFillRGBColor: function CanvasGraphics_setFillRGBColor(r, g, b) {
+ var color = Util.makeCssRgb(r, g, b);
+ this.ctx.fillStyle = color;
+ this.current.fillColor = color;
+ this.current.patternFill = false;
+ },
+
+ shadingFill: function CanvasGraphics_shadingFill(patternIR) {
+ var ctx = this.ctx;
+
+ this.save();
+ var pattern = getShadingPatternFromIR(patternIR);
+ ctx.fillStyle = pattern.getPattern(ctx, this, true);
+
+ var inv = ctx.mozCurrentTransformInverse;
+ if (inv) {
+ var canvas = ctx.canvas;
+ var width = canvas.width;
+ var height = canvas.height;
+
+ var bl = Util.applyTransform([0, 0], inv);
+ var br = Util.applyTransform([0, height], inv);
+ var ul = Util.applyTransform([width, 0], inv);
+ var ur = Util.applyTransform([width, height], inv);
+
+ var x0 = Math.min(bl[0], br[0], ul[0], ur[0]);
+ var y0 = Math.min(bl[1], br[1], ul[1], ur[1]);
+ var x1 = Math.max(bl[0], br[0], ul[0], ur[0]);
+ var y1 = Math.max(bl[1], br[1], ul[1], ur[1]);
+
+ this.ctx.fillRect(x0, y0, x1 - x0, y1 - y0);
+ } else {
+ // HACK to draw the gradient onto an infinite rectangle.
+ // PDF gradients are drawn across the entire image while
+ // Canvas only allows gradients to be drawn in a rectangle
+ // The following bug should allow us to remove this.
+ // https://bugzilla.mozilla.org/show_bug.cgi?id=664884
+
+ this.ctx.fillRect(-1e10, -1e10, 2e10, 2e10);
+ }
+
+ this.restore();
+ },
+
+ // Images
+ beginInlineImage: function CanvasGraphics_beginInlineImage() {
+ error('Should not call beginInlineImage');
+ },
+ beginImageData: function CanvasGraphics_beginImageData() {
+ error('Should not call beginImageData');
+ },
+
+ paintFormXObjectBegin: function CanvasGraphics_paintFormXObjectBegin(matrix,
+ bbox) {
+ this.save();
+ this.baseTransformStack.push(this.baseTransform);
+
+ if (isArray(matrix) && 6 === matrix.length) {
+ this.transform.apply(this, matrix);
+ }
+
+ this.baseTransform = this.ctx.mozCurrentTransform;
+
+ if (isArray(bbox) && 4 === bbox.length) {
+ var width = bbox[2] - bbox[0];
+ var height = bbox[3] - bbox[1];
+ this.ctx.rect(bbox[0], bbox[1], width, height);
+ this.clip();
+ this.endPath();
+ }
+ },
+
+ paintFormXObjectEnd: function CanvasGraphics_paintFormXObjectEnd() {
+ this.restore();
+ this.baseTransform = this.baseTransformStack.pop();
+ },
+
+ beginGroup: function CanvasGraphics_beginGroup(group) {
+ this.save();
+ var currentCtx = this.ctx;
+ // TODO non-isolated groups - according to Rik at adobe non-isolated
+ // group results aren't usually that different and they even have tools
+ // that ignore this setting. Notes from Rik on implmenting:
+ // - When you encounter an transparency group, create a new canvas with
+ // the dimensions of the bbox
+ // - copy the content from the previous canvas to the new canvas
+ // - draw as usual
+ // - remove the backdrop alpha:
+ // alphaNew = 1 - (1 - alpha)/(1 - alphaBackdrop) with 'alpha' the alpha
+ // value of your transparency group and 'alphaBackdrop' the alpha of the
+ // backdrop
+ // - remove background color:
+ // colorNew = color - alphaNew *colorBackdrop /(1 - alphaNew)
+ if (!group.isolated) {
+ info('TODO: Support non-isolated groups.');
+ }
+
+ // TODO knockout - supposedly possible with the clever use of compositing
+ // modes.
+ if (group.knockout) {
+ warn('Knockout groups not supported.');
+ }
+
+ var currentTransform = currentCtx.mozCurrentTransform;
+ if (group.matrix) {
+ currentCtx.transform.apply(currentCtx, group.matrix);
+ }
+ assert(group.bbox, 'Bounding box is required.');
+
+ // Based on the current transform figure out how big the bounding box
+ // will actually be.
+ var bounds = Util.getAxialAlignedBoundingBox(
+ group.bbox,
+ currentCtx.mozCurrentTransform);
+ // Clip the bounding box to the current canvas.
+ var canvasBounds = [0,
+ 0,
+ currentCtx.canvas.width,
+ currentCtx.canvas.height];
+ bounds = Util.intersect(bounds, canvasBounds) || [0, 0, 0, 0];
+ // Use ceil in case we're between sizes so we don't create canvas that is
+ // too small and make the canvas at least 1x1 pixels.
+ var offsetX = Math.floor(bounds[0]);
+ var offsetY = Math.floor(bounds[1]);
+ var drawnWidth = Math.max(Math.ceil(bounds[2]) - offsetX, 1);
+ var drawnHeight = Math.max(Math.ceil(bounds[3]) - offsetY, 1);
+ var scaleX = 1, scaleY = 1;
+ if (drawnWidth > MAX_GROUP_SIZE) {
+ scaleX = drawnWidth / MAX_GROUP_SIZE;
+ drawnWidth = MAX_GROUP_SIZE;
+ }
+ if (drawnHeight > MAX_GROUP_SIZE) {
+ scaleY = drawnHeight / MAX_GROUP_SIZE;
+ drawnHeight = MAX_GROUP_SIZE;
+ }
+
+ var cacheId = 'groupAt' + this.groupLevel;
+ if (group.smask) {
+ // Using two cache entries is case if masks are used one after another.
+ cacheId += '_smask_' + ((this.smaskCounter++) % 2);
+ }
+ var scratchCanvas = this.cachedCanvases.getCanvas(
+ cacheId, drawnWidth, drawnHeight, true);
+ var groupCtx = scratchCanvas.context;
+
+ // Since we created a new canvas that is just the size of the bounding box
+ // we have to translate the group ctx.
+ groupCtx.scale(1 / scaleX, 1 / scaleY);
+ groupCtx.translate(-offsetX, -offsetY);
+ groupCtx.transform.apply(groupCtx, currentTransform);
+
+ if (group.smask) {
+ // Saving state and cached mask to be used in setGState.
+ this.smaskStack.push({
+ canvas: scratchCanvas.canvas,
+ context: groupCtx,
+ offsetX: offsetX,
+ offsetY: offsetY,
+ scaleX: scaleX,
+ scaleY: scaleY,
+ subtype: group.smask.subtype,
+ backdrop: group.smask.backdrop,
+ transferMap: group.smask.transferMap || null
+ });
+ } 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();
+
+ if (this.baseTransform) {
+ this.ctx.setTransform.apply(this.ctx, this.baseTransform);
+ }
+ },
+
+ endAnnotations: function CanvasGraphics_endAnnotations() {
+ this.restore();
+ },
+
+ beginAnnotation: function CanvasGraphics_beginAnnotation(rect, transform,
+ matrix) {
+ this.save();
+
+ if (isArray(rect) && 4 === rect.length) {
+ var width = rect[2] - rect[0];
+ var height = rect[3] - rect[1];
+ this.ctx.rect(rect[0], rect[1], width, height);
+ this.clip();
+ this.endPath();
+ }
+
+ this.transform.apply(this, transform);
+ this.transform.apply(this, matrix);
+ },
+
+ endAnnotation: function CanvasGraphics_endAnnotation() {
+ this.restore();
+ },
+
+ paintJpegXObject: function CanvasGraphics_paintJpegXObject(objId, w, h) {
+ var domImage = this.objs.get(objId);
+ if (!domImage) {
+ warn('Dependent image isn\'t ready yet');
+ return;
+ }
+
+ this.save();
+
+ var ctx = this.ctx;
+ // scale the image to the unit square
+ ctx.scale(1 / w, -1 / h);
+
+ ctx.drawImage(domImage, 0, 0, domImage.width, domImage.height,
+ 0, -h, w, h);
+ if (this.imageLayer) {
+ var currentTransform = ctx.mozCurrentTransformInverse;
+ var position = this.getCanvasPosition(0, 0);
+ this.imageLayer.appendImage({
+ objId: objId,
+ left: position[0],
+ top: position[1],
+ width: w / currentTransform[0],
+ height: h / currentTransform[3]
+ });
+ }
+ this.restore();
+ },
+
+ paintImageMaskXObject: function CanvasGraphics_paintImageMaskXObject(img) {
+ var ctx = this.ctx;
+ var width = img.width, height = img.height;
+ var fillColor = this.current.fillColor;
+ var isPatternFill = this.current.patternFill;
+
+ var glyph = this.processingType3;
+
+ if (COMPILE_TYPE3_GLYPHS && glyph && glyph.compiled === undefined) {
+ if (width <= MAX_SIZE_TO_COMPILE && height <= MAX_SIZE_TO_COMPILE) {
+ glyph.compiled =
+ compileType3Glyph({data: img.data, width: width, height: height});
+ } else {
+ glyph.compiled = null;
+ }
+ }
+
+ if (glyph && glyph.compiled) {
+ glyph.compiled(ctx);
+ return;
+ }
+
+ var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas',
+ width, height);
+ var maskCtx = maskCanvas.context;
+ maskCtx.save();
+
+ putBinaryImageMask(maskCtx, img);
+
+ maskCtx.globalCompositeOperation = 'source-in';
+
+ maskCtx.fillStyle = isPatternFill ?
+ fillColor.getPattern(maskCtx, this) : fillColor;
+ maskCtx.fillRect(0, 0, width, height);
+
+ maskCtx.restore();
+
+ this.paintInlineImageXObject(maskCanvas.canvas);
+ },
+
+ paintImageMaskXObjectRepeat:
+ function CanvasGraphics_paintImageMaskXObjectRepeat(imgData, scaleX,
+ scaleY, positions) {
+ var width = imgData.width;
+ var height = imgData.height;
+ var fillColor = this.current.fillColor;
+ var isPatternFill = this.current.patternFill;
+
+ var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas',
+ width, height);
+ var maskCtx = maskCanvas.context;
+ maskCtx.save();
+
+ putBinaryImageMask(maskCtx, imgData);
+
+ maskCtx.globalCompositeOperation = 'source-in';
+
+ maskCtx.fillStyle = isPatternFill ?
+ fillColor.getPattern(maskCtx, this) : fillColor;
+ maskCtx.fillRect(0, 0, width, height);
+
+ maskCtx.restore();
+
+ var ctx = this.ctx;
+ for (var i = 0, ii = positions.length; i < ii; i += 2) {
+ ctx.save();
+ ctx.transform(scaleX, 0, 0, scaleY, positions[i], positions[i + 1]);
+ ctx.scale(1, -1);
+ ctx.drawImage(maskCanvas.canvas, 0, 0, width, height,
+ 0, -1, 1, 1);
+ ctx.restore();
+ }
+ },
+
+ paintImageMaskXObjectGroup:
+ function CanvasGraphics_paintImageMaskXObjectGroup(images) {
+ var ctx = this.ctx;
+
+ var fillColor = this.current.fillColor;
+ var isPatternFill = this.current.patternFill;
+ for (var i = 0, ii = images.length; i < ii; i++) {
+ var image = images[i];
+ var width = image.width, height = image.height;
+
+ var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas',
+ width, height);
+ var maskCtx = maskCanvas.context;
+ maskCtx.save();
+
+ putBinaryImageMask(maskCtx, image);
+
+ maskCtx.globalCompositeOperation = 'source-in';
+
+ maskCtx.fillStyle = isPatternFill ?
+ fillColor.getPattern(maskCtx, this) : fillColor;
+ maskCtx.fillRect(0, 0, width, height);
+
+ maskCtx.restore();
+
+ ctx.save();
+ ctx.transform.apply(ctx, image.transform);
+ ctx.scale(1, -1);
+ ctx.drawImage(maskCanvas.canvas, 0, 0, width, height,
+ 0, -1, 1, 1);
+ ctx.restore();
+ }
+ },
+
+ paintImageXObject: function CanvasGraphics_paintImageXObject(objId) {
+ var imgData = this.objs.get(objId);
+ if (!imgData) {
+ warn('Dependent image isn\'t ready yet');
+ return;
+ }
+
+ this.paintInlineImageXObject(imgData);
+ },
+
+ paintImageXObjectRepeat:
+ function CanvasGraphics_paintImageXObjectRepeat(objId, scaleX, scaleY,
+ positions) {
+ var imgData = this.objs.get(objId);
+ if (!imgData) {
+ warn('Dependent image isn\'t ready yet');
+ return;
+ }
+
+ var width = imgData.width;
+ var height = imgData.height;
+ var map = [];
+ for (var i = 0, ii = positions.length; i < ii; i += 2) {
+ map.push({transform: [scaleX, 0, 0, scaleY, positions[i],
+ positions[i + 1]], x: 0, y: 0, w: width, h: height});
+ }
+ this.paintInlineImageXObjectGroup(imgData, map);
+ },
+
+ paintInlineImageXObject:
+ function CanvasGraphics_paintInlineImageXObject(imgData) {
+ var width = imgData.width;
+ var height = imgData.height;
+ var ctx = this.ctx;
+
+ this.save();
+ // scale the image to the unit square
+ ctx.scale(1 / width, -1 / height);
+
+ var currentTransform = ctx.mozCurrentTransformInverse;
+ var a = currentTransform[0], b = currentTransform[1];
+ var widthScale = Math.max(Math.sqrt(a * a + b * b), 1);
+ var c = currentTransform[2], d = currentTransform[3];
+ var heightScale = Math.max(Math.sqrt(c * c + d * d), 1);
+
+ var imgToPaint, tmpCanvas;
+ // instanceof HTMLElement does not work in jsdom node.js module
+ if (imgData instanceof HTMLElement || !imgData.data) {
+ imgToPaint = imgData;
+ } else {
+ tmpCanvas = this.cachedCanvases.getCanvas('inlineImage',
+ width, height);
+ var tmpCtx = tmpCanvas.context;
+ putBinaryImageData(tmpCtx, imgData);
+ imgToPaint = tmpCanvas.canvas;
+ }
+
+ var paintWidth = width, paintHeight = height;
+ var tmpCanvasId = 'prescale1';
+ // Vertial or horizontal scaling shall not be more than 2 to not loose the
+ // pixels during drawImage operation, painting on the temporary canvas(es)
+ // that are twice smaller in size
+ while ((widthScale > 2 && paintWidth > 1) ||
+ (heightScale > 2 && paintHeight > 1)) {
+ var newWidth = paintWidth, newHeight = paintHeight;
+ if (widthScale > 2 && paintWidth > 1) {
+ newWidth = Math.ceil(paintWidth / 2);
+ widthScale /= paintWidth / newWidth;
+ }
+ if (heightScale > 2 && paintHeight > 1) {
+ newHeight = Math.ceil(paintHeight / 2);
+ heightScale /= paintHeight / newHeight;
+ }
+ tmpCanvas = this.cachedCanvases.getCanvas(tmpCanvasId,
+ newWidth, newHeight);
+ tmpCtx = tmpCanvas.context;
+ tmpCtx.clearRect(0, 0, newWidth, newHeight);
+ tmpCtx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight,
+ 0, 0, newWidth, newHeight);
+ imgToPaint = tmpCanvas.canvas;
+ paintWidth = newWidth;
+ paintHeight = newHeight;
+ tmpCanvasId = tmpCanvasId === 'prescale1' ? 'prescale2' : 'prescale1';
+ }
+ ctx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight,
+ 0, -height, width, height);
+
+ if (this.imageLayer) {
+ var position = this.getCanvasPosition(0, -height);
+ this.imageLayer.appendImage({
+ imgData: imgData,
+ left: position[0],
+ top: position[1],
+ width: width / currentTransform[0],
+ height: height / currentTransform[3]
+ });
+ }
+ this.restore();
+ },
+
+ paintInlineImageXObjectGroup:
+ function CanvasGraphics_paintInlineImageXObjectGroup(imgData, map) {
+ var ctx = this.ctx;
+ var w = imgData.width;
+ var h = imgData.height;
+
+ var tmpCanvas = this.cachedCanvases.getCanvas('inlineImage', w, h);
+ var tmpCtx = tmpCanvas.context;
+ putBinaryImageData(tmpCtx, imgData);
+
+ for (var i = 0, ii = map.length; i < ii; i++) {
+ var entry = map[i];
+ ctx.save();
+ ctx.transform.apply(ctx, entry.transform);
+ ctx.scale(1, -1);
+ ctx.drawImage(tmpCanvas.canvas, entry.x, entry.y, entry.w, entry.h,
+ 0, -1, 1, 1);
+ if (this.imageLayer) {
+ var position = this.getCanvasPosition(entry.x, entry.y);
+ this.imageLayer.appendImage({
+ imgData: imgData,
+ left: position[0],
+ top: position[1],
+ width: w,
+ height: h
+ });
+ }
+ ctx.restore();
+ }
+ },
+
+ paintSolidColorImageMask:
+ function CanvasGraphics_paintSolidColorImageMask() {
+ this.ctx.fillRect(0, 0, 1, 1);
+ },
+
+ paintXObject: function CanvasGraphics_paintXObject() {
+ warn('Unsupported \'paintXObject\' command.');
+ },
+
+ // Marked content
+
+ markPoint: function CanvasGraphics_markPoint(tag) {
+ // TODO Marked content.
+ },
+ markPointProps: function CanvasGraphics_markPointProps(tag, properties) {
+ // TODO Marked content.
+ },
+ beginMarkedContent: function CanvasGraphics_beginMarkedContent(tag) {
+ // TODO Marked content.
+ },
+ beginMarkedContentProps: function CanvasGraphics_beginMarkedContentProps(
+ tag, properties) {
+ // TODO Marked content.
+ },
+ endMarkedContent: function CanvasGraphics_endMarkedContent() {
+ // TODO Marked content.
+ },
+
+ // Compatibility
+
+ beginCompat: function CanvasGraphics_beginCompat() {
+ // TODO ignore undefined operators (should we do that anyway?)
+ },
+ endCompat: function CanvasGraphics_endCompat() {
+ // TODO stop ignoring undefined operators
+ },
+
+ // Helper functions
+
+ consumePath: function CanvasGraphics_consumePath() {
+ var ctx = this.ctx;
+ if (this.pendingClip) {
+ if (this.pendingClip === EO_CLIP) {
+ if (ctx.mozFillRule !== undefined) {
+ ctx.mozFillRule = 'evenodd';
+ ctx.clip();
+ ctx.mozFillRule = 'nonzero';
+ } else {
+ ctx.clip('evenodd');
+ }
+ } else {
+ ctx.clip();
+ }
+ this.pendingClip = null;
+ }
+ ctx.beginPath();
+ },
+ getSinglePixelWidth: function CanvasGraphics_getSinglePixelWidth(scale) {
+ if (this.cachedGetSinglePixelWidth === null) {
+ var inverse = this.ctx.mozCurrentTransformInverse;
+ // max of the current horizontal and vertical scale
+ this.cachedGetSinglePixelWidth = Math.sqrt(Math.max(
+ (inverse[0] * inverse[0] + inverse[1] * inverse[1]),
+ (inverse[2] * inverse[2] + inverse[3] * inverse[3])));
+ }
+ return this.cachedGetSinglePixelWidth;
+ },
+ getCanvasPosition: function CanvasGraphics_getCanvasPosition(x, y) {
+ var transform = this.ctx.mozCurrentTransform;
+ return [
+ transform[0] * x + transform[2] * y + transform[4],
+ transform[1] * x + transform[3] * y + transform[5]
+ ];
+ }
+ };
+
+ for (var op in OPS) {
+ CanvasGraphics.prototype[OPS[op]] = CanvasGraphics.prototype[op];
+ }
+
+ return CanvasGraphics;
+})();
+
+exports.CanvasGraphics = CanvasGraphics;
+exports.createScratchCanvas = createScratchCanvas;
+}));
+
+
+(function (root, factory) {
+ {
+ factory((root.pdfjsDisplayAPI = {}), root.pdfjsSharedUtil,
+ root.pdfjsDisplayFontLoader, root.pdfjsDisplayCanvas,
+ root.pdfjsDisplayMetadata, root.pdfjsSharedGlobal);
+ }
+}(this, function (exports, sharedUtil, displayFontLoader, displayCanvas,
+ displayMetadata, sharedGlobal, amdRequire) {
+
+var InvalidPDFException = sharedUtil.InvalidPDFException;
+var MessageHandler = sharedUtil.MessageHandler;
+var MissingPDFException = sharedUtil.MissingPDFException;
+var PasswordResponses = sharedUtil.PasswordResponses;
+var PasswordException = sharedUtil.PasswordException;
+var StatTimer = sharedUtil.StatTimer;
+var UnexpectedResponseException = sharedUtil.UnexpectedResponseException;
+var UnknownErrorException = sharedUtil.UnknownErrorException;
+var Util = sharedUtil.Util;
+var createPromiseCapability = sharedUtil.createPromiseCapability;
+var combineUrl = sharedUtil.combineUrl;
+var error = sharedUtil.error;
+var deprecated = sharedUtil.deprecated;
+var info = sharedUtil.info;
+var isArrayBuffer = sharedUtil.isArrayBuffer;
+var loadJpegStream = sharedUtil.loadJpegStream;
+var stringToBytes = sharedUtil.stringToBytes;
+var warn = sharedUtil.warn;
+var FontFaceObject = displayFontLoader.FontFaceObject;
+var FontLoader = displayFontLoader.FontLoader;
+var CanvasGraphics = displayCanvas.CanvasGraphics;
+var createScratchCanvas = displayCanvas.createScratchCanvas;
+var Metadata = displayMetadata.Metadata;
+var PDFJS = sharedGlobal.PDFJS;
+var globalScope = sharedGlobal.globalScope;
+
+var DEFAULT_RANGE_CHUNK_SIZE = 65536; // 2^16 = 65536
+
+
+var useRequireEnsure = false;
+if (typeof module !== 'undefined' && module.require) {
+ // node.js - disable worker and set require.ensure.
+ PDFJS.disableWorker = true;
+ if (typeof require.ensure === 'undefined') {
+ require.ensure = require('node-ensure');
+ }
+ useRequireEnsure = true;
+}
+if (typeof __webpack_require__ !== 'undefined') {
+ // Webpack - get/bundle pdf.worker.js as additional file.
+ PDFJS.workerSrc = require('entry?name=[hash]-worker.js!./pdf.worker.js');
+ useRequireEnsure = true;
+}
+if (typeof requirejs !== 'undefined' && requirejs.toUrl) {
+ PDFJS.workerSrc = requirejs.toUrl('pdfjs-dist/build/pdf.worker.js');
+}
+var fakeWorkerFilesLoader = useRequireEnsure ? (function (callback) {
+ require.ensure([], function () {
+ require('./pdf.worker.js');
+ callback();
+ });
+}) : (typeof requirejs !== 'undefined') ? (function (callback) {
+ requirejs(['pdfjs-dist/build/pdf.worker'], function (worker) {
+ callback();
+ });
+}) : null;
+
+
+/**
+ * The maximum allowed image size in total pixels e.g. width * height. Images
+ * above this value will not be drawn. Use -1 for no limit.
+ * @var {number}
+ */
+PDFJS.maxImageSize = (PDFJS.maxImageSize === undefined ?
+ -1 : PDFJS.maxImageSize);
+
+/**
+ * The url of where the predefined Adobe CMaps are located. Include trailing
+ * slash.
+ * @var {string}
+ */
+PDFJS.cMapUrl = (PDFJS.cMapUrl === undefined ? null : PDFJS.cMapUrl);
+
+/**
+ * Specifies if CMaps are binary packed.
+ * @var {boolean}
+ */
+PDFJS.cMapPacked = PDFJS.cMapPacked === undefined ? false : PDFJS.cMapPacked;
+
+/**
+ * By default fonts are converted to OpenType fonts and loaded via font face
+ * rules. If disabled, the font will be rendered using a built in font renderer
+ * that constructs the glyphs with primitive path commands.
+ * @var {boolean}
+ */
+PDFJS.disableFontFace = (PDFJS.disableFontFace === undefined ?
+ false : PDFJS.disableFontFace);
+
+/**
+ * Path for image resources, mainly for annotation icons. Include trailing
+ * slash.
+ * @var {string}
+ */
+PDFJS.imageResourcesPath = (PDFJS.imageResourcesPath === undefined ?
+ '' : PDFJS.imageResourcesPath);
+
+/**
+ * Disable the web worker and run all code on the main thread. This will happen
+ * automatically if the browser doesn't support workers or sending typed arrays
+ * to workers.
+ * @var {boolean}
+ */
+PDFJS.disableWorker = (PDFJS.disableWorker === undefined ?
+ false : PDFJS.disableWorker);
+
+/**
+ * Path and filename of the worker file. Required when the worker is enabled in
+ * development mode. If unspecified in the production build, the worker will be
+ * loaded based on the location of the pdf.js file. It is recommended that
+ * the workerSrc is set in a custom application to prevent issues caused by
+ * third-party frameworks and libraries.
+ * @var {string}
+ */
+PDFJS.workerSrc = (PDFJS.workerSrc === undefined ? null : PDFJS.workerSrc);
+
+/**
+ * Disable range request loading of PDF files. When enabled and if the server
+ * supports partial content requests then the PDF will be fetched in chunks.
+ * Enabled (false) by default.
+ * @var {boolean}
+ */
+PDFJS.disableRange = (PDFJS.disableRange === undefined ?
+ false : PDFJS.disableRange);
+
+/**
+ * Disable streaming of PDF file data. By default PDF.js attempts to load PDF
+ * in chunks. This default behavior can be disabled.
+ * @var {boolean}
+ */
+PDFJS.disableStream = (PDFJS.disableStream === undefined ?
+ false : PDFJS.disableStream);
+
+/**
+ * Disable pre-fetching of PDF file data. When range requests are enabled PDF.js
+ * will automatically keep fetching more data even if it isn't needed to display
+ * the current page. This default behavior can be disabled.
+ *
+ * NOTE: It is also necessary to disable streaming, see above,
+ * in order for disabling of pre-fetching to work correctly.
+ * @var {boolean}
+ */
+PDFJS.disableAutoFetch = (PDFJS.disableAutoFetch === undefined ?
+ false : PDFJS.disableAutoFetch);
+
+/**
+ * Enables special hooks for debugging PDF.js.
+ * @var {boolean}
+ */
+PDFJS.pdfBug = (PDFJS.pdfBug === undefined ? false : PDFJS.pdfBug);
+
+/**
+ * Enables transfer usage in postMessage for ArrayBuffers.
+ * @var {boolean}
+ */
+PDFJS.postMessageTransfers = (PDFJS.postMessageTransfers === undefined ?
+ true : PDFJS.postMessageTransfers);
+
+/**
+ * Disables URL.createObjectURL usage.
+ * @var {boolean}
+ */
+PDFJS.disableCreateObjectURL = (PDFJS.disableCreateObjectURL === undefined ?
+ false : PDFJS.disableCreateObjectURL);
+
+/**
+ * Disables WebGL usage.
+ * @var {boolean}
+ */
+PDFJS.disableWebGL = (PDFJS.disableWebGL === undefined ?
+ true : PDFJS.disableWebGL);
+
+/**
+ * Disables fullscreen support, and by extension Presentation Mode,
+ * in browsers which support the fullscreen API.
+ * @var {boolean}
+ */
+PDFJS.disableFullscreen = (PDFJS.disableFullscreen === undefined ?
+ false : PDFJS.disableFullscreen);
+
+/**
+ * Enables CSS only zooming.
+ * @var {boolean}
+ */
+PDFJS.useOnlyCssZoom = (PDFJS.useOnlyCssZoom === undefined ?
+ false : PDFJS.useOnlyCssZoom);
+
+/**
+ * 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);
+
+/**
+ * The maximum supported canvas size in total pixels e.g. width * height.
+ * The default value is 4096 * 4096. Use -1 for no limit.
+ * @var {number}
+ */
+PDFJS.maxCanvasPixels = (PDFJS.maxCanvasPixels === undefined ?
+ 16777216 : PDFJS.maxCanvasPixels);
+
+/**
+ * (Deprecated) Opens external links in a new window if enabled.
+ * The default behavior opens external links in the PDF.js window.
+ *
+ * NOTE: This property has been deprecated, please use
+ * `PDFJS.externalLinkTarget = PDFJS.LinkTarget.BLANK` instead.
+ * @var {boolean}
+ */
+PDFJS.openExternalLinksInNewWindow = (
+ PDFJS.openExternalLinksInNewWindow === undefined ?
+ false : PDFJS.openExternalLinksInNewWindow);
+
+/**
+ * Specifies the |target| attribute for external links.
+ * The constants from PDFJS.LinkTarget should be used:
+ * - NONE [default]
+ * - SELF
+ * - BLANK
+ * - PARENT
+ * - TOP
+ * @var {number}
+ */
+PDFJS.externalLinkTarget = (PDFJS.externalLinkTarget === undefined ?
+ PDFJS.LinkTarget.NONE : PDFJS.externalLinkTarget);
+
+/**
+ * Specifies the |rel| attribute for external links. Defaults to stripping
+ * the referrer.
+ * @var {string}
+ */
+PDFJS.externalLinkRel = (PDFJS.externalLinkRel === undefined ?
+ 'noreferrer' : PDFJS.externalLinkRel);
+
+/**
+ * Determines if we can eval strings as JS. Primarily used to improve
+ * performance for font rendering.
+ * @var {boolean}
+ */
+PDFJS.isEvalSupported = (PDFJS.isEvalSupported === undefined ?
+ true : PDFJS.isEvalSupported);
+
+/**
+ * Document initialization / loading parameters object.
+ *
+ * @typedef {Object} DocumentInitParameters
+ * @property {string} url - The URL of the PDF.
+ * @property {TypedArray|Array|string} data - Binary PDF data. Use typed arrays
+ * (Uint8Array) to improve the memory usage. If PDF data is BASE64-encoded,
+ * use atob() to convert it to a binary string first.
+ * @property {Object} httpHeaders - Basic authentication headers.
+ * @property {boolean} withCredentials - Indicates whether or not cross-site
+ * Access-Control requests should be made using credentials such as cookies
+ * or authorization headers. The default is false.
+ * @property {string} password - For decrypting password-protected PDFs.
+ * @property {TypedArray} initialData - A typed array with the first portion or
+ * all of the pdf data. Used by the extension since some data is already
+ * loaded before the switch to range requests.
+ * @property {number} length - The PDF file length. It's used for progress
+ * reports and range requests operations.
+ * @property {PDFDataRangeTransport} range
+ * @property {number} rangeChunkSize - Optional parameter to specify
+ * maximum number of bytes fetched per range request. The default value is
+ * 2^16 = 65536.
+ * @property {PDFWorker} worker - The worker that will be used for the loading
+ * and parsing of the PDF data.
+ */
+
+/**
+ * @typedef {Object} PDFDocumentStats
+ * @property {Array} streamTypes - Used stream types in the document (an item
+ * is set to true if specific stream ID was used in the document).
+ * @property {Array} fontTypes - Used font type in the document (an item is set
+ * to true if specific font ID was used in the document).
+ */
+
+/**
+ * This is the main entry point for loading a PDF and interacting with it.
+ * NOTE: If a URL is used to fetch the PDF data a standard XMLHttpRequest(XHR)
+ * is used, which means it must follow the same origin rules that any XHR does
+ * e.g. No cross domain requests without CORS.
+ *
+ * @param {string|TypedArray|DocumentInitParameters|PDFDataRangeTransport} src
+ * Can be a url to where a PDF is located, a typed array (Uint8Array)
+ * already populated with data or parameter object.
+ *
+ * @param {PDFDataRangeTransport} pdfDataRangeTransport (deprecated) It is used
+ * if you want to manually serve range requests for data in the PDF.
+ *
+ * @param {function} passwordCallback (deprecated) It is used to request a
+ * password if wrong or no password was provided. The callback receives two
+ * parameters: function that needs to be called with new password and reason
+ * (see {PasswordResponses}).
+ *
+ * @param {function} progressCallback (deprecated) It is used to be able to
+ * monitor the loading progress of the PDF file (necessary to implement e.g.
+ * a loading bar). The callback receives an {Object} with the properties:
+ * {number} loaded and {number} total.
+ *
+ * @return {PDFDocumentLoadingTask}
+ */
+PDFJS.getDocument = function getDocument(src,
+ pdfDataRangeTransport,
+ passwordCallback,
+ progressCallback) {
+ var task = new PDFDocumentLoadingTask();
+
+ // Support of the obsolete arguments (for compatibility with API v1.0)
+ if (arguments.length > 1) {
+ deprecated('getDocument is called with pdfDataRangeTransport, ' +
+ 'passwordCallback or progressCallback argument');
+ }
+ if (pdfDataRangeTransport) {
+ if (!(pdfDataRangeTransport instanceof PDFDataRangeTransport)) {
+ // Not a PDFDataRangeTransport instance, trying to add missing properties.
+ pdfDataRangeTransport = Object.create(pdfDataRangeTransport);
+ pdfDataRangeTransport.length = src.length;
+ pdfDataRangeTransport.initialData = src.initialData;
+ if (!pdfDataRangeTransport.abort) {
+ pdfDataRangeTransport.abort = function () {};
+ }
+ }
+ src = Object.create(src);
+ src.range = pdfDataRangeTransport;
+ }
+ task.onPassword = passwordCallback || null;
+ task.onProgress = progressCallback || null;
+
+ var source;
+ if (typeof src === 'string') {
+ source = { url: src };
+ } else if (isArrayBuffer(src)) {
+ source = { data: src };
+ } else if (src instanceof PDFDataRangeTransport) {
+ source = { range: src };
+ } else {
+ if (typeof src !== 'object') {
+ error('Invalid parameter in getDocument, need either Uint8Array, ' +
+ 'string or a parameter object');
+ }
+ if (!src.url && !src.data && !src.range) {
+ error('Invalid parameter object: need either .data, .range or .url');
+ }
+
+ source = src;
+ }
+
+ var params = {};
+ var rangeTransport = null;
+ var worker = null;
+ for (var key in source) {
+ if (key === 'url' && typeof window !== 'undefined') {
+ // The full path is required in the 'url' field.
+ params[key] = combineUrl(window.location.href, source[key]);
+ continue;
+ } else if (key === 'range') {
+ rangeTransport = source[key];
+ continue;
+ } else if (key === 'worker') {
+ worker = source[key];
+ continue;
+ } else if (key === 'data' && !(source[key] instanceof Uint8Array)) {
+ // Converting string or array-like data to Uint8Array.
+ var pdfBytes = source[key];
+ if (typeof pdfBytes === 'string') {
+ params[key] = stringToBytes(pdfBytes);
+ } else if (typeof pdfBytes === 'object' && pdfBytes !== null &&
+ !isNaN(pdfBytes.length)) {
+ params[key] = new Uint8Array(pdfBytes);
+ } else if (isArrayBuffer(pdfBytes)) {
+ params[key] = new Uint8Array(pdfBytes);
+ } else {
+ error('Invalid PDF binary data: either typed array, string or ' +
+ 'array-like object is expected in the data property.');
+ }
+ continue;
+ }
+ params[key] = source[key];
+ }
+
+ params.rangeChunkSize = params.rangeChunkSize || DEFAULT_RANGE_CHUNK_SIZE;
+
+ if (!worker) {
+ // Worker was not provided -- creating and owning our own.
+ worker = new PDFWorker();
+ task._worker = worker;
+ }
+ var docId = task.docId;
+ worker.promise.then(function () {
+ if (task.destroyed) {
+ throw new Error('Loading aborted');
+ }
+ return _fetchDocument(worker, params, rangeTransport, docId).then(
+ function (workerId) {
+ if (task.destroyed) {
+ throw new Error('Loading aborted');
+ }
+ var messageHandler = new MessageHandler(docId, workerId, worker.port);
+ messageHandler.send('Ready', null);
+ var transport = new WorkerTransport(messageHandler, task, rangeTransport);
+ task._transport = transport;
+ });
+ }).catch(task._capability.reject);
+
+ return task;
+};
+
+/**
+ * Starts fetching of specified PDF document/data.
+ * @param {PDFWorker} worker
+ * @param {Object} source
+ * @param {PDFDataRangeTransport} pdfDataRangeTransport
+ * @param {string} docId Unique document id, used as MessageHandler id.
+ * @returns {Promise} The promise, which is resolved when worker id of
+ * MessageHandler is known.
+ * @private
+ */
+function _fetchDocument(worker, source, pdfDataRangeTransport, docId) {
+ if (worker.destroyed) {
+ return Promise.reject(new Error('Worker was destroyed'));
+ }
+
+ source.disableAutoFetch = PDFJS.disableAutoFetch;
+ source.disableStream = PDFJS.disableStream;
+ source.chunkedViewerLoading = !!pdfDataRangeTransport;
+ if (pdfDataRangeTransport) {
+ source.length = pdfDataRangeTransport.length;
+ source.initialData = pdfDataRangeTransport.initialData;
+ }
+ return worker.messageHandler.sendWithPromise('GetDocRequest', {
+ docId: docId,
+ source: source,
+ disableRange: PDFJS.disableRange,
+ maxImageSize: PDFJS.maxImageSize,
+ cMapUrl: PDFJS.cMapUrl,
+ cMapPacked: PDFJS.cMapPacked,
+ disableFontFace: PDFJS.disableFontFace,
+ disableCreateObjectURL: PDFJS.disableCreateObjectURL,
+ verbosity: PDFJS.verbosity
+ }).then(function (workerId) {
+ if (worker.destroyed) {
+ throw new Error('Worker was destroyed');
+ }
+ return workerId;
+ });
+}
+
+/**
+ * PDF document loading operation.
+ * @class
+ * @alias PDFDocumentLoadingTask
+ */
+var PDFDocumentLoadingTask = (function PDFDocumentLoadingTaskClosure() {
+ var nextDocumentId = 0;
+
+ /** @constructs PDFDocumentLoadingTask */
+ function PDFDocumentLoadingTask() {
+ this._capability = createPromiseCapability();
+ this._transport = null;
+ this._worker = null;
+
+ /**
+ * Unique document loading task id -- used in MessageHandlers.
+ * @type {string}
+ */
+ this.docId = 'd' + (nextDocumentId++);
+
+ /**
+ * Shows if loading task is destroyed.
+ * @type {boolean}
+ */
+ this.destroyed = false;
+
+ /**
+ * Callback to request a password if wrong or no password was provided.
+ * The callback receives two parameters: function that needs to be called
+ * with new password and reason (see {PasswordResponses}).
+ */
+ this.onPassword = null;
+
+ /**
+ * Callback to be able to monitor the loading progress of the PDF file
+ * (necessary to implement e.g. a loading bar). The callback receives
+ * an {Object} with the properties: {number} loaded and {number} total.
+ */
+ this.onProgress = null;
+
+ /**
+ * Callback to when unsupported feature is used. The callback receives
+ * an {PDFJS.UNSUPPORTED_FEATURES} argument.
+ */
+ this.onUnsupportedFeature = null;
+ }
+
+ PDFDocumentLoadingTask.prototype =
+ /** @lends PDFDocumentLoadingTask.prototype */ {
+ /**
+ * @return {Promise}
+ */
+ get promise() {
+ return this._capability.promise;
+ },
+
+ /**
+ * Aborts all network requests and destroys worker.
+ * @return {Promise} A promise that is resolved after destruction activity
+ * is completed.
+ */
+ destroy: function () {
+ this.destroyed = true;
+
+ var transportDestroyed = !this._transport ? Promise.resolve() :
+ this._transport.destroy();
+ return transportDestroyed.then(function () {
+ this._transport = null;
+ if (this._worker) {
+ this._worker.destroy();
+ this._worker = null;
+ }
+ }.bind(this));
+ },
+
+ /**
+ * Registers callbacks to indicate the document loading completion.
+ *
+ * @param {function} onFulfilled The callback for the loading completion.
+ * @param {function} onRejected The callback for the loading failure.
+ * @return {Promise} A promise that is resolved after the onFulfilled or
+ * onRejected callback.
+ */
+ then: function PDFDocumentLoadingTask_then(onFulfilled, onRejected) {
+ return this.promise.then.apply(this.promise, arguments);
+ }
+ };
+
+ return PDFDocumentLoadingTask;
+})();
+
+/**
+ * Abstract class to support range requests file loading.
+ * @class
+ * @alias PDFJS.PDFDataRangeTransport
+ * @param {number} length
+ * @param {Uint8Array} initialData
+ */
+var PDFDataRangeTransport = (function pdfDataRangeTransportClosure() {
+ function PDFDataRangeTransport(length, initialData) {
+ this.length = length;
+ this.initialData = initialData;
+
+ this._rangeListeners = [];
+ this._progressListeners = [];
+ this._progressiveReadListeners = [];
+ this._readyCapability = createPromiseCapability();
+ }
+ PDFDataRangeTransport.prototype =
+ /** @lends PDFDataRangeTransport.prototype */ {
+ addRangeListener:
+ function PDFDataRangeTransport_addRangeListener(listener) {
+ this._rangeListeners.push(listener);
+ },
+
+ addProgressListener:
+ function PDFDataRangeTransport_addProgressListener(listener) {
+ this._progressListeners.push(listener);
+ },
+
+ addProgressiveReadListener:
+ function PDFDataRangeTransport_addProgressiveReadListener(listener) {
+ this._progressiveReadListeners.push(listener);
+ },
+
+ onDataRange: function PDFDataRangeTransport_onDataRange(begin, chunk) {
+ var listeners = this._rangeListeners;
+ for (var i = 0, n = listeners.length; i < n; ++i) {
+ listeners[i](begin, chunk);
+ }
+ },
+
+ onDataProgress: function PDFDataRangeTransport_onDataProgress(loaded) {
+ this._readyCapability.promise.then(function () {
+ var listeners = this._progressListeners;
+ for (var i = 0, n = listeners.length; i < n; ++i) {
+ listeners[i](loaded);
+ }
+ }.bind(this));
+ },
+
+ onDataProgressiveRead:
+ function PDFDataRangeTransport_onDataProgress(chunk) {
+ this._readyCapability.promise.then(function () {
+ var listeners = this._progressiveReadListeners;
+ for (var i = 0, n = listeners.length; i < n; ++i) {
+ listeners[i](chunk);
+ }
+ }.bind(this));
+ },
+
+ transportReady: function PDFDataRangeTransport_transportReady() {
+ this._readyCapability.resolve();
+ },
+
+ requestDataRange:
+ function PDFDataRangeTransport_requestDataRange(begin, end) {
+ throw new Error('Abstract method PDFDataRangeTransport.requestDataRange');
+ },
+
+ abort: function PDFDataRangeTransport_abort() {
+ }
+ };
+ return PDFDataRangeTransport;
+})();
+
+PDFJS.PDFDataRangeTransport = PDFDataRangeTransport;
+
+/**
+ * Proxy to a PDFDocument in the worker thread. Also, contains commonly used
+ * properties that can be read synchronously.
+ * @class
+ * @alias PDFDocumentProxy
+ */
+var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
+ function PDFDocumentProxy(pdfInfo, transport, loadingTask) {
+ this.pdfInfo = pdfInfo;
+ this.transport = transport;
+ this.loadingTask = loadingTask;
+ }
+ PDFDocumentProxy.prototype = /** @lends PDFDocumentProxy.prototype */ {
+ /**
+ * @return {number} Total number of pages the PDF contains.
+ */
+ get numPages() {
+ return this.pdfInfo.numPages;
+ },
+ /**
+ * @return {string} A unique ID to identify a PDF. Not guaranteed to be
+ * unique.
+ */
+ get fingerprint() {
+ return this.pdfInfo.fingerprint;
+ },
+ /**
+ * @param {number} pageNumber The page number to get. The first page is 1.
+ * @return {Promise} A promise that is resolved with a {@link PDFPageProxy}
+ * object.
+ */
+ getPage: function PDFDocumentProxy_getPage(pageNumber) {
+ return this.transport.getPage(pageNumber);
+ },
+ /**
+ * @param {{num: number, gen: number}} ref The page reference. Must have
+ * the 'num' and 'gen' properties.
+ * @return {Promise} A promise that is resolved with the page index that is
+ * associated with the reference.
+ */
+ getPageIndex: function PDFDocumentProxy_getPageIndex(ref) {
+ return this.transport.getPageIndex(ref);
+ },
+ /**
+ * @return {Promise} A promise that is resolved with a lookup table for
+ * mapping named destinations to reference numbers.
+ *
+ * This can be slow for large documents: use getDestination instead
+ */
+ getDestinations: function PDFDocumentProxy_getDestinations() {
+ return this.transport.getDestinations();
+ },
+ /**
+ * @param {string} id The named destination to get.
+ * @return {Promise} A promise that is resolved with all information
+ * of the given named destination.
+ */
+ getDestination: function PDFDocumentProxy_getDestination(id) {
+ return this.transport.getDestination(id);
+ },
+ /**
+ * @return {Promise} A promise that is resolved with:
+ * an Array containing the pageLabels that correspond to the pageIndexes,
+ * or `null` when no pageLabels are present in the PDF file.
+ */
+ getPageLabels: function PDFDocumentProxy_getPageLabels() {
+ return this.transport.getPageLabels();
+ },
+ /**
+ * @return {Promise} A promise that is resolved with a lookup table for
+ * mapping named attachments to their content.
+ */
+ getAttachments: function PDFDocumentProxy_getAttachments() {
+ return this.transport.getAttachments();
+ },
+ /**
+ * @return {Promise} A promise that is resolved with an array of all the
+ * JavaScript strings in the name tree.
+ */
+ getJavaScript: function PDFDocumentProxy_getJavaScript() {
+ return this.transport.getJavaScript();
+ },
+ /**
+ * @return {Promise} A promise that is resolved with an {Array} that is a
+ * tree outline (if it has one) of the PDF. The tree is in the format of:
+ * [
+ * {
+ * title: string,
+ * bold: boolean,
+ * italic: boolean,
+ * color: rgb array,
+ * dest: dest obj,
+ * url: string,
+ * items: array of more items like this
+ * },
+ * ...
+ * ].
+ */
+ getOutline: function PDFDocumentProxy_getOutline() {
+ return this.transport.getOutline();
+ },
+ /**
+ * @return {Promise} A promise that is resolved with an {Object} that has
+ * info and metadata properties. Info is an {Object} filled with anything
+ * available in the information dictionary and similarly metadata is a
+ * {Metadata} object with information from the metadata section of the PDF.
+ */
+ getMetadata: function PDFDocumentProxy_getMetadata() {
+ return this.transport.getMetadata();
+ },
+ /**
+ * @return {Promise} A promise that is resolved with a TypedArray that has
+ * the raw data from the PDF.
+ */
+ getData: function PDFDocumentProxy_getData() {
+ return this.transport.getData();
+ },
+ /**
+ * @return {Promise} A promise that is resolved when the document's data
+ * is loaded. It is resolved with an {Object} that contains the length
+ * property that indicates size of the PDF data in bytes.
+ */
+ getDownloadInfo: function PDFDocumentProxy_getDownloadInfo() {
+ return this.transport.downloadInfoCapability.promise;
+ },
+ /**
+ * @return {Promise} A promise this is resolved with current stats about
+ * document structures (see {@link PDFDocumentStats}).
+ */
+ getStats: function PDFDocumentProxy_getStats() {
+ return this.transport.getStats();
+ },
+ /**
+ * Cleans up resources allocated by the document, e.g. created @font-face.
+ */
+ cleanup: function PDFDocumentProxy_cleanup() {
+ this.transport.startCleanup();
+ },
+ /**
+ * Destroys current document instance and terminates worker.
+ */
+ destroy: function PDFDocumentProxy_destroy() {
+ return this.loadingTask.destroy();
+ }
+ };
+ return PDFDocumentProxy;
+})();
+
+/**
+ * Page getTextContent parameters.
+ *
+ * @typedef {Object} getTextContentParameters
+ * @param {boolean} normalizeWhitespace - replaces all occurrences of
+ * whitespace with standard spaces (0x20). The default value is `false`.
+ */
+
+/**
+ * Page text content.
+ *
+ * @typedef {Object} TextContent
+ * @property {array} items - array of {@link TextItem}
+ * @property {Object} styles - {@link TextStyles} objects, indexed by font
+ * name.
+ */
+
+/**
+ * Page text content part.
+ *
+ * @typedef {Object} TextItem
+ * @property {string} str - text content.
+ * @property {string} dir - text direction: 'ttb', 'ltr' or 'rtl'.
+ * @property {array} transform - transformation matrix.
+ * @property {number} width - width in device space.
+ * @property {number} height - height in device space.
+ * @property {string} fontName - font name used by pdf.js for converted font.
+ */
+
+/**
+ * Text style.
+ *
+ * @typedef {Object} TextStyle
+ * @property {number} ascent - font ascent.
+ * @property {number} descent - font descent.
+ * @property {boolean} vertical - text is in vertical mode.
+ * @property {string} fontFamily - possible font family
+ */
+
+/**
+ * Page annotation parameters.
+ *
+ * @typedef {Object} GetAnnotationsParameters
+ * @param {string} intent - Determines the annotations that will be fetched,
+ * can be either 'display' (viewable annotations) or 'print'
+ * (printable annotations).
+ * If the parameter is omitted, all annotations are fetched.
+ */
+
+/**
+ * Page render parameters.
+ *
+ * @typedef {Object} RenderParameters
+ * @property {Object} canvasContext - A 2D context of a DOM Canvas object.
+ * @property {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 {Array} transform - (optional) Additional transform, applied
+ * just before viewport transform.
+ * @property {Object} imageLayer - (optional) An object that has beginLayout,
+ * endLayout and appendImage functions.
+ * @property {function} continueCallback - (deprecated) A function that will be
+ * called each time the rendering is paused. To continue
+ * rendering call the function that is the first argument
+ * to the callback.
+ */
+
+/**
+ * PDF page operator list.
+ *
+ * @typedef {Object} PDFOperatorList
+ * @property {Array} fnArray - Array containing the operator functions.
+ * @property {Array} argsArray - Array containing the arguments of the
+ * functions.
+ */
+
+/**
+ * Proxy to a PDFPage in the worker thread.
+ * @class
+ * @alias PDFPageProxy
+ */
+var PDFPageProxy = (function PDFPageProxyClosure() {
+ function PDFPageProxy(pageIndex, pageInfo, transport) {
+ this.pageIndex = pageIndex;
+ this.pageInfo = pageInfo;
+ this.transport = transport;
+ this.stats = new StatTimer();
+ this.stats.enabled = !!globalScope.PDFJS.enableStats;
+ this.commonObjs = transport.commonObjs;
+ this.objs = new PDFObjects();
+ this.cleanupAfterRender = false;
+ this.pendingCleanup = false;
+ this.intentStates = {};
+ this.destroyed = false;
+ }
+ PDFPageProxy.prototype = /** @lends PDFPageProxy.prototype */ {
+ /**
+ * @return {number} Page number of the page. First page is 1.
+ */
+ get pageNumber() {
+ return this.pageIndex + 1;
+ },
+ /**
+ * @return {number} The number of degrees the page is rotated clockwise.
+ */
+ get rotate() {
+ return this.pageInfo.rotate;
+ },
+ /**
+ * @return {Object} The reference that points to this page. It has 'num' and
+ * 'gen' properties.
+ */
+ get ref() {
+ return this.pageInfo.ref;
+ },
+ /**
+ * @return {Array} An array of the visible portion of the PDF page in the
+ * user space units - [x1, y1, x2, y2].
+ */
+ get view() {
+ return this.pageInfo.view;
+ },
+ /**
+ * @param {number} scale The desired scale of the viewport.
+ * @param {number} rotate Degrees to rotate the viewport. If omitted this
+ * defaults to the page rotation.
+ * @return {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);
+ },
+ /**
+ * @param {GetAnnotationsParameters} params - Annotation parameters.
+ * @return {Promise} A promise that is resolved with an {Array} of the
+ * annotation objects.
+ */
+ getAnnotations: function PDFPageProxy_getAnnotations(params) {
+ var intent = (params && params.intent) || null;
+
+ if (!this.annotationsPromise || this.annotationsIntent !== intent) {
+ this.annotationsPromise = this.transport.getAnnotations(this.pageIndex,
+ intent);
+ this.annotationsIntent = intent;
+ }
+ return this.annotationsPromise;
+ },
+ /**
+ * Begins the process of rendering a page to the desired context.
+ * @param {RenderParameters} params Page render parameters.
+ * @return {RenderTask} An object that contains the promise, which
+ * is resolved when the page finishes rendering.
+ */
+ render: function PDFPageProxy_render(params) {
+ var stats = this.stats;
+ stats.time('Overall');
+
+ // If there was a pending destroy cancel it so no cleanup happens during
+ // this call to render.
+ this.pendingCleanup = false;
+
+ var renderingIntent = (params.intent === 'print' ? 'print' : 'display');
+
+ if (!this.intentStates[renderingIntent]) {
+ this.intentStates[renderingIntent] = {};
+ }
+ var intentState = this.intentStates[renderingIntent];
+
+ // If there's no displayReadyCapability yet, then the operatorList
+ // was never requested before. Make the request and create the promise.
+ if (!intentState.displayReadyCapability) {
+ intentState.receivingOperatorList = true;
+ intentState.displayReadyCapability = createPromiseCapability();
+ intentState.operatorList = {
+ fnArray: [],
+ argsArray: [],
+ lastChunk: false
+ };
+
+ this.stats.time('Page Request');
+ this.transport.messageHandler.send('RenderPageRequest', {
+ pageIndex: this.pageNumber - 1,
+ intent: renderingIntent
+ });
+ }
+
+ var internalRenderTask = new InternalRenderTask(complete, params,
+ this.objs,
+ this.commonObjs,
+ intentState.operatorList,
+ this.pageNumber);
+ internalRenderTask.useRequestAnimationFrame = renderingIntent !== 'print';
+ if (!intentState.renderTasks) {
+ intentState.renderTasks = [];
+ }
+ intentState.renderTasks.push(internalRenderTask);
+ var renderTask = internalRenderTask.task;
+
+ // Obsolete parameter support
+ if (params.continueCallback) {
+ deprecated('render is used with continueCallback parameter');
+ renderTask.onContinue = params.continueCallback;
+ }
+
+ var self = this;
+ intentState.displayReadyCapability.promise.then(
+ function pageDisplayReadyPromise(transparency) {
+ if (self.pendingCleanup) {
+ complete();
+ return;
+ }
+ stats.time('Rendering');
+ internalRenderTask.initalizeGraphics(transparency);
+ internalRenderTask.operatorListChanged();
+ },
+ function pageDisplayReadPromiseError(reason) {
+ complete(reason);
+ }
+ );
+
+ function complete(error) {
+ var i = intentState.renderTasks.indexOf(internalRenderTask);
+ if (i >= 0) {
+ intentState.renderTasks.splice(i, 1);
+ }
+
+ if (self.cleanupAfterRender) {
+ self.pendingCleanup = true;
+ }
+ self._tryCleanup();
+
+ if (error) {
+ internalRenderTask.capability.reject(error);
+ } else {
+ internalRenderTask.capability.resolve();
+ }
+ stats.timeEnd('Rendering');
+ stats.timeEnd('Overall');
+ }
+
+ return renderTask;
+ },
+
+ /**
+ * @return {Promise} A promise resolved with an {@link PDFOperatorList}
+ * object that represents page's operator list.
+ */
+ getOperatorList: function PDFPageProxy_getOperatorList() {
+ function operatorListChanged() {
+ if (intentState.operatorList.lastChunk) {
+ intentState.opListReadCapability.resolve(intentState.operatorList);
+ }
+ }
+
+ var renderingIntent = 'oplist';
+ if (!this.intentStates[renderingIntent]) {
+ this.intentStates[renderingIntent] = {};
+ }
+ var intentState = this.intentStates[renderingIntent];
+
+ if (!intentState.opListReadCapability) {
+ var opListTask = {};
+ opListTask.operatorListChanged = operatorListChanged;
+ intentState.receivingOperatorList = true;
+ intentState.opListReadCapability = createPromiseCapability();
+ intentState.renderTasks = [];
+ intentState.renderTasks.push(opListTask);
+ intentState.operatorList = {
+ fnArray: [],
+ argsArray: [],
+ lastChunk: false
+ };
+
+ this.transport.messageHandler.send('RenderPageRequest', {
+ pageIndex: this.pageIndex,
+ intent: renderingIntent
+ });
+ }
+ return intentState.opListReadCapability.promise;
+ },
+
+ /**
+ * @param {getTextContentParameters} params - getTextContent parameters.
+ * @return {Promise} That is resolved a {@link TextContent}
+ * object that represent the page text content.
+ */
+ getTextContent: function PDFPageProxy_getTextContent(params) {
+ var normalizeWhitespace = (params && params.normalizeWhitespace) || false;
+
+ return this.transport.messageHandler.sendWithPromise('GetTextContent', {
+ pageIndex: this.pageNumber - 1,
+ normalizeWhitespace: normalizeWhitespace,
+ });
+ },
+
+ /**
+ * Destroys page object.
+ */
+ _destroy: function PDFPageProxy_destroy() {
+ this.destroyed = true;
+ this.transport.pageCache[this.pageIndex] = null;
+
+ var waitOn = [];
+ Object.keys(this.intentStates).forEach(function(intent) {
+ var intentState = this.intentStates[intent];
+ intentState.renderTasks.forEach(function(renderTask) {
+ var renderCompleted = renderTask.capability.promise.
+ catch(function () {}); // ignoring failures
+ waitOn.push(renderCompleted);
+ renderTask.cancel();
+ });
+ }, this);
+ this.objs.clear();
+ this.annotationsPromise = null;
+ this.pendingCleanup = false;
+ return Promise.all(waitOn);
+ },
+
+ /**
+ * Cleans up resources allocated by the page. (deprecated)
+ */
+ destroy: function() {
+ deprecated('page destroy method, use cleanup() instead');
+ this.cleanup();
+ },
+
+ /**
+ * Cleans up resources allocated by the page.
+ */
+ cleanup: function PDFPageProxy_cleanup() {
+ this.pendingCleanup = true;
+ this._tryCleanup();
+ },
+ /**
+ * For internal use only. Attempts to clean up if rendering is in a state
+ * where that's possible.
+ * @ignore
+ */
+ _tryCleanup: function PDFPageProxy_tryCleanup() {
+ if (!this.pendingCleanup ||
+ Object.keys(this.intentStates).some(function(intent) {
+ var intentState = this.intentStates[intent];
+ return (intentState.renderTasks.length !== 0 ||
+ intentState.receivingOperatorList);
+ }, this)) {
+ return;
+ }
+
+ Object.keys(this.intentStates).forEach(function(intent) {
+ delete this.intentStates[intent];
+ }, this);
+ this.objs.clear();
+ this.annotationsPromise = null;
+ this.pendingCleanup = false;
+ },
+ /**
+ * For internal use only.
+ * @ignore
+ */
+ _startRenderPage: function PDFPageProxy_startRenderPage(transparency,
+ intent) {
+ var intentState = this.intentStates[intent];
+ // TODO Refactor RenderPageRequest to separate rendering
+ // and operator list logic
+ if (intentState.displayReadyCapability) {
+ intentState.displayReadyCapability.resolve(transparency);
+ }
+ },
+ /**
+ * For internal use only.
+ * @ignore
+ */
+ _renderPageChunk: function PDFPageProxy_renderPageChunk(operatorListChunk,
+ intent) {
+ var intentState = this.intentStates[intent];
+ var i, ii;
+ // Add the new chunk to the current operator list.
+ for (i = 0, ii = operatorListChunk.length; i < ii; i++) {
+ intentState.operatorList.fnArray.push(operatorListChunk.fnArray[i]);
+ intentState.operatorList.argsArray.push(
+ operatorListChunk.argsArray[i]);
+ }
+ intentState.operatorList.lastChunk = operatorListChunk.lastChunk;
+
+ // Notify all the rendering tasks there are more operators to be consumed.
+ for (i = 0; i < intentState.renderTasks.length; i++) {
+ intentState.renderTasks[i].operatorListChanged();
+ }
+
+ if (operatorListChunk.lastChunk) {
+ intentState.receivingOperatorList = false;
+ this._tryCleanup();
+ }
+ }
+ };
+ return PDFPageProxy;
+})();
+
+/**
+ * PDF.js web worker abstraction, it controls instantiation of PDF documents and
+ * WorkerTransport for them. If creation of a web worker is not possible,
+ * a "fake" worker will be used instead.
+ * @class
+ */
+var PDFWorker = (function PDFWorkerClosure() {
+ var nextFakeWorkerId = 0;
+
+ function getWorkerSrc() {
+ if (PDFJS.workerSrc) {
+ return PDFJS.workerSrc;
+ }
+ if (pdfjsFilePath) {
+ return pdfjsFilePath.replace(/\.js$/i, '.worker.js');
+ }
+ error('No PDFJS.workerSrc specified');
+ }
+
+ // Loads worker code into main thread.
+ function setupFakeWorkerGlobal() {
+ 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.
+ var loader = fakeWorkerFilesLoader || function (callback) {
+ Util.loadScript(getWorkerSrc(), callback);
+ };
+ loader(function () {
+ PDFJS.fakeWorkerFilesLoadedCapability.resolve();
+ });
+ }
+ return PDFJS.fakeWorkerFilesLoadedCapability.promise;
+ }
+
+ function PDFWorker(name) {
+ this.name = name;
+ this.destroyed = false;
+
+ this._readyCapability = createPromiseCapability();
+ this._port = null;
+ this._webWorker = null;
+ this._messageHandler = null;
+ this._initialize();
+ }
+
+ PDFWorker.prototype = /** @lends PDFWorker.prototype */ {
+ get promise() {
+ return this._readyCapability.promise;
+ },
+
+ get port() {
+ return this._port;
+ },
+
+ get messageHandler() {
+ return this._messageHandler;
+ },
+
+ _initialize: function PDFWorker_initialize() {
+ // If worker support isn't disabled explicit and the browser has worker
+ // support, create a new web worker and test if it/the browser 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 v.15.)
+ if (!globalScope.PDFJS.disableWorker && typeof Worker !== 'undefined') {
+ var workerSrc = getWorkerSrc();
+
+ 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', worker);
+ messageHandler.on('test', function PDFWorker_test(data) {
+ if (this.destroyed) {
+ this._readyCapability.reject(new Error('Worker was destroyed'));
+ messageHandler.destroy();
+ worker.terminate();
+ return; // worker was destroyed
+ }
+ var supportTypedArray = data && data.supportTypedArray;
+ if (supportTypedArray) {
+ this._messageHandler = messageHandler;
+ this._port = worker;
+ this._webWorker = worker;
+ if (!data.supportTransfers) {
+ PDFJS.postMessageTransfers = false;
+ }
+ this._readyCapability.resolve();
+ } else {
+ this._setupFakeWorker();
+ messageHandler.destroy();
+ worker.terminate();
+ }
+ }.bind(this));
+
+ messageHandler.on('console_log', function (data) {
+ console.log.apply(console, data);
+ });
+ messageHandler.on('console_error', function (data) {
+ console.error.apply(console, data);
+ });
+
+ messageHandler.on('ready', function (data) {
+ if (this.destroyed) {
+ this._readyCapability.reject(new Error('Worker was destroyed'));
+ messageHandler.destroy();
+ worker.terminate();
+ return; // worker was destroyed
+ }
+ try {
+ sendTest();
+ } catch (e) {
+ // We need fallback to a faked worker.
+ this._setupFakeWorker();
+ }
+ }.bind(this));
+
+ var sendTest = function () {
+ 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);
+ }
+ };
+
+ // It might take time for worker to initialize (especially when AMD
+ // loader is used). We will try to send test immediately, and then
+ // when 'ready' message will arrive. The worker shall process only
+ // first received 'test'.
+ sendTest();
+ return;
+ } catch (e) {
+ info('The worker has been disabled.');
+ }
+ }
+ // Either workers are disabled, not supported or have thrown an exception.
+ // Thus, we fallback to a faked worker.
+ this._setupFakeWorker();
+ },
+
+ _setupFakeWorker: function PDFWorker_setupFakeWorker() {
+ if (!globalScope.PDFJS.disableWorker) {
+ warn('Setting up fake worker.');
+ globalScope.PDFJS.disableWorker = true;
+ }
+
+ setupFakeWorkerGlobal().then(function () {
+ if (this.destroyed) {
+ this._readyCapability.reject(new Error('Worker was destroyed'));
+ return;
+ }
+
+ // If we don't use a worker, just post/sendMessage to the main thread.
+ var port = {
+ _listeners: [],
+ postMessage: function (obj) {
+ var e = {data: obj};
+ this._listeners.forEach(function (listener) {
+ listener.call(this, e);
+ }, this);
+ },
+ addEventListener: function (name, listener) {
+ this._listeners.push(listener);
+ },
+ removeEventListener: function (name, listener) {
+ var i = this._listeners.indexOf(listener);
+ this._listeners.splice(i, 1);
+ },
+ terminate: function () {}
+ };
+ this._port = port;
+
+ // All fake workers use the same port, making id unique.
+ var id = 'fake' + (nextFakeWorkerId++);
+
+ // If the main thread is our worker, setup the handling for the
+ // messages -- the main thread sends to it self.
+ var workerHandler = new MessageHandler(id + '_worker', id, port);
+ PDFJS.WorkerMessageHandler.setup(workerHandler, port);
+
+ var messageHandler = new MessageHandler(id, id + '_worker', port);
+ this._messageHandler = messageHandler;
+ this._readyCapability.resolve();
+ }.bind(this));
+ },
+
+ /**
+ * Destroys the worker instance.
+ */
+ destroy: function PDFWorker_destroy() {
+ this.destroyed = true;
+ if (this._webWorker) {
+ // We need to terminate only web worker created resource.
+ this._webWorker.terminate();
+ this._webWorker = null;
+ }
+ this._port = null;
+ if (this._messageHandler) {
+ this._messageHandler.destroy();
+ this._messageHandler = null;
+ }
+ }
+ };
+
+ return PDFWorker;
+})();
+PDFJS.PDFWorker = PDFWorker;
+
+/**
+ * For internal use only.
+ * @ignore
+ */
+var WorkerTransport = (function WorkerTransportClosure() {
+ function WorkerTransport(messageHandler, loadingTask, pdfDataRangeTransport) {
+ this.messageHandler = messageHandler;
+ this.loadingTask = loadingTask;
+ this.pdfDataRangeTransport = pdfDataRangeTransport;
+ this.commonObjs = new PDFObjects();
+ this.fontLoader = new FontLoader(loadingTask.docId);
+
+ this.destroyed = false;
+ this.destroyCapability = null;
+
+ this.pageCache = [];
+ this.pagePromises = [];
+ this.downloadInfoCapability = createPromiseCapability();
+
+ this.setupMessageHandler();
+ }
+ WorkerTransport.prototype = {
+ destroy: function WorkerTransport_destroy() {
+ if (this.destroyCapability) {
+ return this.destroyCapability.promise;
+ }
+
+ this.destroyed = true;
+ this.destroyCapability = createPromiseCapability();
+
+ var waitOn = [];
+ // We need to wait for all renderings to be completed, e.g.
+ // timeout/rAF can take a long time.
+ this.pageCache.forEach(function (page) {
+ if (page) {
+ waitOn.push(page._destroy());
+ }
+ });
+ this.pageCache = [];
+ this.pagePromises = [];
+ var self = this;
+ // We also need to wait for the worker to finish its long running tasks.
+ var terminated = this.messageHandler.sendWithPromise('Terminate', null);
+ waitOn.push(terminated);
+ Promise.all(waitOn).then(function () {
+ self.fontLoader.clear();
+ if (self.pdfDataRangeTransport) {
+ self.pdfDataRangeTransport.abort();
+ self.pdfDataRangeTransport = null;
+ }
+ if (self.messageHandler) {
+ self.messageHandler.destroy();
+ self.messageHandler = null;
+ }
+ self.destroyCapability.resolve();
+ }, this.destroyCapability.reject);
+ return this.destroyCapability.promise;
+ },
+
+ setupMessageHandler:
+ function WorkerTransport_setupMessageHandler() {
+ var messageHandler = this.messageHandler;
+
+ function updatePassword(password) {
+ messageHandler.send('UpdatePassword', password);
+ }
+
+ var pdfDataRangeTransport = this.pdfDataRangeTransport;
+ if (pdfDataRangeTransport) {
+ pdfDataRangeTransport.addRangeListener(function(begin, chunk) {
+ messageHandler.send('OnDataRange', {
+ begin: begin,
+ chunk: chunk
+ });
+ });
+
+ pdfDataRangeTransport.addProgressListener(function(loaded) {
+ messageHandler.send('OnDataProgress', {
+ loaded: loaded
+ });
+ });
+
+ pdfDataRangeTransport.addProgressiveReadListener(function(chunk) {
+ messageHandler.send('OnDataRange', {
+ chunk: chunk
+ });
+ });
+
+ messageHandler.on('RequestDataRange',
+ function transportDataRange(data) {
+ pdfDataRangeTransport.requestDataRange(data.begin, data.end);
+ }, this);
+ }
+
+ messageHandler.on('GetDoc', function transportDoc(data) {
+ var pdfInfo = data.pdfInfo;
+ this.numPages = data.pdfInfo.numPages;
+ var loadingTask = this.loadingTask;
+ var pdfDocument = new PDFDocumentProxy(pdfInfo, this, loadingTask);
+ this.pdfDocument = pdfDocument;
+ loadingTask._capability.resolve(pdfDocument);
+ }, this);
+
+ messageHandler.on('NeedPassword',
+ function transportNeedPassword(exception) {
+ var loadingTask = this.loadingTask;
+ if (loadingTask.onPassword) {
+ return loadingTask.onPassword(updatePassword,
+ PasswordResponses.NEED_PASSWORD);
+ }
+ loadingTask._capability.reject(
+ new PasswordException(exception.message, exception.code));
+ }, this);
+
+ messageHandler.on('IncorrectPassword',
+ function transportIncorrectPassword(exception) {
+ var loadingTask = this.loadingTask;
+ if (loadingTask.onPassword) {
+ return loadingTask.onPassword(updatePassword,
+ PasswordResponses.INCORRECT_PASSWORD);
+ }
+ loadingTask._capability.reject(
+ new PasswordException(exception.message, exception.code));
+ }, this);
+
+ messageHandler.on('InvalidPDF', function transportInvalidPDF(exception) {
+ this.loadingTask._capability.reject(
+ new InvalidPDFException(exception.message));
+ }, this);
+
+ messageHandler.on('MissingPDF', function transportMissingPDF(exception) {
+ this.loadingTask._capability.reject(
+ new MissingPDFException(exception.message));
+ }, this);
+
+ messageHandler.on('UnexpectedResponse',
+ function transportUnexpectedResponse(exception) {
+ this.loadingTask._capability.reject(
+ new UnexpectedResponseException(exception.message, exception.status));
+ }, this);
+
+ messageHandler.on('UnknownError',
+ function transportUnknownError(exception) {
+ this.loadingTask._capability.reject(
+ new UnknownErrorException(exception.message, exception.details));
+ }, this);
+
+ messageHandler.on('DataLoaded', function transportPage(data) {
+ this.downloadInfoCapability.resolve(data);
+ }, this);
+
+ messageHandler.on('PDFManagerReady', function transportPage(data) {
+ if (this.pdfDataRangeTransport) {
+ this.pdfDataRangeTransport.transportReady();
+ }
+ }, this);
+
+ messageHandler.on('StartRenderPage', function transportRender(data) {
+ if (this.destroyed) {
+ return; // Ignore any pending requests if the worker was terminated.
+ }
+ var page = this.pageCache[data.pageIndex];
+
+ page.stats.timeEnd('Page Request');
+ page._startRenderPage(data.transparency, data.intent);
+ }, this);
+
+ messageHandler.on('RenderPageChunk', function transportRender(data) {
+ if (this.destroyed) {
+ return; // Ignore any pending requests if the worker was terminated.
+ }
+ var page = this.pageCache[data.pageIndex];
+
+ page._renderPageChunk(data.operatorList, data.intent);
+ }, this);
+
+ messageHandler.on('commonobj', function transportObj(data) {
+ if (this.destroyed) {
+ return; // Ignore any pending requests if the worker was terminated.
+ }
+
+ var id = data[0];
+ var type = data[1];
+ if (this.commonObjs.hasData(id)) {
+ return;
+ }
+
+ switch (type) {
+ case 'Font':
+ var exportedData = data[2];
+
+ var font;
+ if ('error' in exportedData) {
+ var error = exportedData.error;
+ warn('Error during font loading: ' + error);
+ this.commonObjs.resolve(id, error);
+ break;
+ } else {
+ font = new FontFaceObject(exportedData);
+ }
+
+ this.fontLoader.bind(
+ [font],
+ function fontReady(fontObjs) {
+ this.commonObjs.resolve(id, font);
+ }.bind(this)
+ );
+ break;
+ case 'FontPath':
+ this.commonObjs.resolve(id, data[2]);
+ break;
+ default:
+ error('Got unknown common object type ' + type);
+ }
+ }, this);
+
+ messageHandler.on('obj', function transportObj(data) {
+ if (this.destroyed) {
+ return; // Ignore any pending requests if the worker was terminated.
+ }
+
+ var id = data[0];
+ var pageIndex = data[1];
+ var type = data[2];
+ var pageProxy = this.pageCache[pageIndex];
+ var imageData;
+ if (pageProxy.objs.hasData(id)) {
+ return;
+ }
+
+ switch (type) {
+ case 'JpegStream':
+ imageData = data[3];
+ loadJpegStream(id, imageData, pageProxy.objs);
+ break;
+ case 'Image':
+ imageData = data[3];
+ pageProxy.objs.resolve(id, imageData);
+
+ // heuristics that will allow not to store large data
+ var MAX_IMAGE_SIZE_TO_STORE = 8000000;
+ if (imageData && 'data' in imageData &&
+ imageData.data.length > MAX_IMAGE_SIZE_TO_STORE) {
+ pageProxy.cleanupAfterRender = true;
+ }
+ break;
+ default:
+ error('Got unknown object type ' + type);
+ }
+ }, this);
+
+ messageHandler.on('DocProgress', function transportDocProgress(data) {
+ if (this.destroyed) {
+ return; // Ignore any pending requests if the worker was terminated.
+ }
+
+ var loadingTask = this.loadingTask;
+ if (loadingTask.onProgress) {
+ loadingTask.onProgress({
+ loaded: data.loaded,
+ total: data.total
+ });
+ }
+ }, this);
+
+ messageHandler.on('PageError', function transportError(data) {
+ if (this.destroyed) {
+ return; // Ignore any pending requests if the worker was terminated.
+ }
+
+ var page = this.pageCache[data.pageNum - 1];
+ var intentState = page.intentStates[data.intent];
+ if (intentState.displayReadyCapability) {
+ intentState.displayReadyCapability.reject(data.error);
+ } else {
+ error(data.error);
+ }
+ }, this);
+
+ messageHandler.on('UnsupportedFeature',
+ function transportUnsupportedFeature(data) {
+ if (this.destroyed) {
+ return; // Ignore any pending requests if the worker was terminated.
+ }
+ var featureId = data.featureId;
+ var loadingTask = this.loadingTask;
+ if (loadingTask.onUnsupportedFeature) {
+ loadingTask.onUnsupportedFeature(featureId);
+ }
+ PDFJS.UnsupportedManager.notify(featureId);
+ }, this);
+
+ messageHandler.on('JpegDecode', function(data) {
+ if (this.destroyed) {
+ return Promise.reject('Worker was terminated');
+ }
+
+ var imageUrl = data[0];
+ var components = data[1];
+ if (components !== 3 && components !== 1) {
+ return Promise.reject(
+ new Error('Only 3 components or 1 component can be returned'));
+ }
+
+ return new Promise(function (resolve, reject) {
+ var img = new Image();
+ img.onload = function () {
+ var width = img.width;
+ var height = img.height;
+ var size = width * height;
+ var rgbaLength = size * 4;
+ var buf = new Uint8Array(size * components);
+ var tmpCanvas = createScratchCanvas(width, height);
+ var tmpCtx = tmpCanvas.getContext('2d');
+ tmpCtx.drawImage(img, 0, 0);
+ var data = tmpCtx.getImageData(0, 0, width, height).data;
+ var i, j;
+
+ if (components === 3) {
+ for (i = 0, j = 0; i < rgbaLength; i += 4, j += 3) {
+ buf[j] = data[i];
+ buf[j + 1] = data[i + 1];
+ buf[j + 2] = data[i + 2];
+ }
+ } else if (components === 1) {
+ for (i = 0, j = 0; i < rgbaLength; i += 4, j++) {
+ buf[j] = data[i];
+ }
+ }
+ resolve({ data: buf, width: width, height: height});
+ };
+ img.onerror = function () {
+ reject(new Error('JpegDecode failed to load image'));
+ };
+ img.src = imageUrl;
+ });
+ }, this);
+ },
+
+ getData: function WorkerTransport_getData() {
+ return this.messageHandler.sendWithPromise('GetData', null);
+ },
+
+ getPage: function WorkerTransport_getPage(pageNumber, capability) {
+ if (pageNumber <= 0 || pageNumber > this.numPages ||
+ (pageNumber|0) !== pageNumber) {
+ return Promise.reject(new Error('Invalid page request'));
+ }
+
+ var pageIndex = pageNumber - 1;
+ if (pageIndex in this.pagePromises) {
+ return this.pagePromises[pageIndex];
+ }
+ var promise = this.messageHandler.sendWithPromise('GetPage', {
+ pageIndex: pageIndex
+ }).then(function (pageInfo) {
+ if (this.destroyed) {
+ throw new Error('Transport destroyed');
+ }
+ var page = new PDFPageProxy(pageIndex, pageInfo, this);
+ this.pageCache[pageIndex] = page;
+ return page;
+ }.bind(this));
+ this.pagePromises[pageIndex] = promise;
+ return promise;
+ },
+
+ getPageIndex: function WorkerTransport_getPageIndexByRef(ref) {
+ return this.messageHandler.sendWithPromise('GetPageIndex', { ref: ref });
+ },
+
+ getAnnotations: function WorkerTransport_getAnnotations(pageIndex, intent) {
+ return this.messageHandler.sendWithPromise('GetAnnotations', {
+ pageIndex: pageIndex,
+ intent: intent,
+ });
+ },
+
+ getDestinations: function WorkerTransport_getDestinations() {
+ return this.messageHandler.sendWithPromise('GetDestinations', null);
+ },
+
+ getDestination: function WorkerTransport_getDestination(id) {
+ return this.messageHandler.sendWithPromise('GetDestination', { id: id });
+ },
+
+ getPageLabels: function WorkerTransport_getPageLabels() {
+ return this.messageHandler.sendWithPromise('GetPageLabels', null);
+ },
+
+ getAttachments: function WorkerTransport_getAttachments() {
+ return this.messageHandler.sendWithPromise('GetAttachments', null);
+ },
+
+ getJavaScript: function WorkerTransport_getJavaScript() {
+ return this.messageHandler.sendWithPromise('GetJavaScript', null);
+ },
+
+ getOutline: function WorkerTransport_getOutline() {
+ return this.messageHandler.sendWithPromise('GetOutline', null);
+ },
+
+ getMetadata: function WorkerTransport_getMetadata() {
+ return this.messageHandler.sendWithPromise('GetMetadata', null).
+ then(function transportMetadata(results) {
+ return {
+ info: results[0],
+ metadata: (results[1] ? new Metadata(results[1]) : null)
+ };
+ });
+ },
+
+ getStats: function WorkerTransport_getStats() {
+ return this.messageHandler.sendWithPromise('GetStats', null);
+ },
+
+ startCleanup: function WorkerTransport_startCleanup() {
+ this.messageHandler.sendWithPromise('Cleanup', null).
+ then(function endCleanup() {
+ for (var i = 0, ii = this.pageCache.length; i < ii; i++) {
+ var page = this.pageCache[i];
+ if (page) {
+ page.cleanup();
+ }
+ }
+ this.commonObjs.clear();
+ this.fontLoader.clear();
+ }.bind(this));
+ }
+ };
+ return WorkerTransport;
+
+})();
+
+/**
+ * A PDF document and page is built of many objects. E.g. there are objects
+ * for fonts, images, rendering code and such. These objects might get processed
+ * inside of a worker. The `PDFObjects` implements some basic functions to
+ * manage these objects.
+ * @ignore
+ */
+var PDFObjects = (function PDFObjectsClosure() {
+ function PDFObjects() {
+ this.objs = {};
+ }
+
+ 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
+ * @alias RenderTask
+ */
+var RenderTask = (function RenderTaskClosure() {
+ function RenderTask(internalRenderTask) {
+ this._internalRenderTask = internalRenderTask;
+
+ /**
+ * Callback for incremental rendering -- a function that will be called
+ * each time the rendering is paused. To continue rendering call the
+ * function that is the first argument to the callback.
+ * @type {function}
+ */
+ this.onContinue = null;
+ }
+
+ RenderTask.prototype = /** @lends RenderTask.prototype */ {
+ /**
+ * Promise for rendering task completion.
+ * @return {Promise}
+ */
+ get promise() {
+ return this._internalRenderTask.capability.promise;
+ },
+
+ /**
+ * Cancels the rendering task. If the task is currently rendering it will
+ * not be cancelled until graphics pauses with a timeout. The promise that
+ * this object extends will resolved when cancelled.
+ */
+ cancel: function RenderTask_cancel() {
+ this._internalRenderTask.cancel();
+ },
+
+ /**
+ * Registers callbacks to indicate the rendering task completion.
+ *
+ * @param {function} onFulfilled The callback for the rendering completion.
+ * @param {function} onRejected The callback for the rendering failure.
+ * @return {Promise} A promise that is resolved after the onFulfilled or
+ * onRejected callback.
+ */
+ then: function RenderTask_then(onFulfilled, onRejected) {
+ return this.promise.then.apply(this.promise, arguments);
+ }
+ };
+
+ return RenderTask;
+})();
+
+/**
+ * For internal use only.
+ * @ignore
+ */
+var InternalRenderTask = (function InternalRenderTaskClosure() {
+
+ function InternalRenderTask(callback, params, objs, commonObjs, operatorList,
+ pageNumber) {
+ this.callback = callback;
+ this.params = params;
+ this.objs = objs;
+ this.commonObjs = commonObjs;
+ this.operatorListIdx = null;
+ this.operatorList = operatorList;
+ this.pageNumber = pageNumber;
+ this.running = false;
+ this.graphicsReadyCallback = null;
+ this.graphicsReady = false;
+ this.useRequestAnimationFrame = false;
+ this.cancelled = false;
+ this.capability = createPromiseCapability();
+ this.task = new RenderTask(this);
+ // caching this-bound methods
+ this._continueBound = this._continue.bind(this);
+ this._scheduleNextBound = this._scheduleNext.bind(this);
+ this._nextBound = this._next.bind(this);
+ }
+
+ InternalRenderTask.prototype = {
+
+ initalizeGraphics:
+ function InternalRenderTask_initalizeGraphics(transparency) {
+
+ if (this.cancelled) {
+ return;
+ }
+ if (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.transform, params.viewport, transparency);
+ this.operatorListIdx = 0;
+ this.graphicsReady = true;
+ if (this.graphicsReadyCallback) {
+ this.graphicsReadyCallback();
+ }
+ },
+
+ cancel: function InternalRenderTask_cancel() {
+ this.running = false;
+ this.cancelled = true;
+ this.callback('cancelled');
+ },
+
+ operatorListChanged: function InternalRenderTask_operatorListChanged() {
+ if (!this.graphicsReady) {
+ if (!this.graphicsReadyCallback) {
+ this.graphicsReadyCallback = this._continueBound;
+ }
+ return;
+ }
+
+ if (this.stepper) {
+ this.stepper.updateOperatorList(this.operatorList);
+ }
+
+ if (this.running) {
+ return;
+ }
+ this._continue();
+ },
+
+ _continue: function InternalRenderTask__continue() {
+ this.running = true;
+ if (this.cancelled) {
+ return;
+ }
+ if (this.task.onContinue) {
+ this.task.onContinue.call(this.task, this._scheduleNextBound);
+ } else {
+ this._scheduleNext();
+ }
+ },
+
+ _scheduleNext: function InternalRenderTask__scheduleNext() {
+ if (this.useRequestAnimationFrame) {
+ window.requestAnimationFrame(this._nextBound);
+ } else {
+ Promise.resolve(undefined).then(this._nextBound);
+ }
+ },
+
+ _next: function InternalRenderTask__next() {
+ if (this.cancelled) {
+ return;
+ }
+ this.operatorListIdx = this.gfx.executeOperatorList(this.operatorList,
+ this.operatorListIdx,
+ this._continueBound,
+ this.stepper);
+ if (this.operatorListIdx === this.operatorList.argsArray.length) {
+ this.running = false;
+ if (this.operatorList.lastChunk) {
+ this.gfx.endDrawing();
+ this.callback();
+ }
+ }
+ }
+
+ };
+
+ return InternalRenderTask;
+})();
+
+/**
+ * (Deprecated) Global observer of unsupported feature usages. Use
+ * onUnsupportedFeature callback of the {PDFDocumentLoadingTask} instance.
+ */
+PDFJS.UnsupportedManager = (function UnsupportedManagerClosure() {
+ var listeners = [];
+ return {
+ listen: function (cb) {
+ deprecated('Global UnsupportedManager.listen is used: ' +
+ ' use PDFDocumentLoadingTask.onUnsupportedFeature instead');
+ listeners.push(cb);
+ },
+ notify: function (featureId) {
+ for (var i = 0, ii = listeners.length; i < ii; i++) {
+ listeners[i](featureId);
+ }
+ }
+ };
+})();
+
+exports.getDocument = PDFJS.getDocument;
+exports.PDFDataRangeTransport = PDFDataRangeTransport;
+exports.PDFDocumentProxy = PDFDocumentProxy;
+exports.PDFPageProxy = PDFPageProxy;
+}));
+
+
+ }).call(pdfjsLibs);
+
+ exports.PDFJS = pdfjsLibs.pdfjsSharedGlobal.PDFJS;
+
+ exports.getDocument = pdfjsLibs.pdfjsDisplayAPI.getDocument;
+ exports.PDFDataRangeTransport =
+ pdfjsLibs.pdfjsDisplayAPI.PDFDataRangeTransport;
+ exports.renderTextLayer = pdfjsLibs.pdfjsDisplayTextLayer.renderTextLayer;
+ exports.AnnotationLayer =
+ pdfjsLibs.pdfjsDisplayAnnotationLayer.AnnotationLayer;
+ exports.CustomStyle = pdfjsLibs.pdfjsDisplayDOMUtils.CustomStyle;
+ exports.PasswordResponses = pdfjsLibs.pdfjsSharedUtil.PasswordResponses;
+ exports.InvalidPDFException = pdfjsLibs.pdfjsSharedUtil.InvalidPDFException;
+ exports.MissingPDFException = pdfjsLibs.pdfjsSharedUtil.MissingPDFException;
+ exports.UnexpectedResponseException =
+ pdfjsLibs.pdfjsSharedUtil.UnexpectedResponseException;
+}));
+
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 17:55:05 +0000