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diff --git a/dist/js/pdf.js b/dist/js/pdf.js
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+++ /dev/null
@@ -1,11515 +0,0 @@
-/* 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 = '1.6.210';
-var pdfjsBuild = '4ce2356';
-
- var pdfjsFilePath =
- typeof document !== 'undefined' && document.currentScript ?
- document.currentScript.src : null;
-
- var pdfjsLibs = {};
-
- (function pdfjsWrapper() {
-
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsSharedUtil = {}));
- }
-}(this, function (exports) {
-
-var globalScope = (typeof window !== 'undefined') ? window :
- (typeof global !== 'undefined') ? global :
- (typeof self !== 'undefined') ? self : this;
-
-var FONT_IDENTITY_MATRIX = [0.001, 0, 0, 0.001, 0, 0];
-
-var TextRenderingMode = {
- FILL: 0,
- STROKE: 1,
- FILL_STROKE: 2,
- INVISIBLE: 3,
- FILL_ADD_TO_PATH: 4,
- STROKE_ADD_TO_PATH: 5,
- FILL_STROKE_ADD_TO_PATH: 6,
- ADD_TO_PATH: 7,
- FILL_STROKE_MASK: 3,
- ADD_TO_PATH_FLAG: 4
-};
-
-var ImageKind = {
- GRAYSCALE_1BPP: 1,
- RGB_24BPP: 2,
- RGBA_32BPP: 3
-};
-
-var AnnotationType = {
- TEXT: 1,
- LINK: 2,
- FREETEXT: 3,
- LINE: 4,
- SQUARE: 5,
- CIRCLE: 6,
- POLYGON: 7,
- POLYLINE: 8,
- HIGHLIGHT: 9,
- UNDERLINE: 10,
- SQUIGGLY: 11,
- STRIKEOUT: 12,
- STAMP: 13,
- CARET: 14,
- INK: 15,
- POPUP: 16,
- FILEATTACHMENT: 17,
- SOUND: 18,
- MOVIE: 19,
- WIDGET: 20,
- SCREEN: 21,
- PRINTERMARK: 22,
- TRAPNET: 23,
- WATERMARK: 24,
- THREED: 25,
- REDACT: 26
-};
-
-var AnnotationFlag = {
- INVISIBLE: 0x01,
- HIDDEN: 0x02,
- PRINT: 0x04,
- NOZOOM: 0x08,
- NOROTATE: 0x10,
- NOVIEW: 0x20,
- READONLY: 0x40,
- LOCKED: 0x80,
- TOGGLENOVIEW: 0x100,
- LOCKEDCONTENTS: 0x200
-};
-
-var AnnotationFieldFlag = {
- READONLY: 0x0000001,
- REQUIRED: 0x0000002,
- NOEXPORT: 0x0000004,
- MULTILINE: 0x0001000,
- PASSWORD: 0x0002000,
- NOTOGGLETOOFF: 0x0004000,
- RADIO: 0x0008000,
- PUSHBUTTON: 0x0010000,
- COMBO: 0x0020000,
- EDIT: 0x0040000,
- SORT: 0x0080000,
- FILESELECT: 0x0100000,
- MULTISELECT: 0x0200000,
- DONOTSPELLCHECK: 0x0400000,
- DONOTSCROLL: 0x0800000,
- COMB: 0x1000000,
- RICHTEXT: 0x2000000,
- RADIOSINUNISON: 0x2000000,
- COMMITONSELCHANGE: 0x4000000,
-};
-
-var AnnotationBorderStyleType = {
- SOLID: 1,
- DASHED: 2,
- BEVELED: 3,
- INSET: 4,
- UNDERLINE: 5
-};
-
-var StreamType = {
- UNKNOWN: 0,
- FLATE: 1,
- LZW: 2,
- DCT: 3,
- JPX: 4,
- JBIG: 5,
- A85: 6,
- AHX: 7,
- CCF: 8,
- RL: 9
-};
-
-var FontType = {
- UNKNOWN: 0,
- TYPE1: 1,
- TYPE1C: 2,
- CIDFONTTYPE0: 3,
- CIDFONTTYPE0C: 4,
- TRUETYPE: 5,
- CIDFONTTYPE2: 6,
- TYPE3: 7,
- OPENTYPE: 8,
- TYPE0: 9,
- MMTYPE1: 10
-};
-
-var VERBOSITY_LEVELS = {
- errors: 0,
- warnings: 1,
- infos: 5
-};
-
-// All the possible operations for an operator list.
-var OPS = {
- // Intentionally start from 1 so it is easy to spot bad operators that will be
- // 0's.
- dependency: 1,
- setLineWidth: 2,
- setLineCap: 3,
- setLineJoin: 4,
- setMiterLimit: 5,
- setDash: 6,
- setRenderingIntent: 7,
- setFlatness: 8,
- setGState: 9,
- save: 10,
- restore: 11,
- transform: 12,
- moveTo: 13,
- lineTo: 14,
- curveTo: 15,
- curveTo2: 16,
- curveTo3: 17,
- closePath: 18,
- rectangle: 19,
- stroke: 20,
- closeStroke: 21,
- fill: 22,
- eoFill: 23,
- fillStroke: 24,
- eoFillStroke: 25,
- closeFillStroke: 26,
- closeEOFillStroke: 27,
- endPath: 28,
- clip: 29,
- eoClip: 30,
- beginText: 31,
- endText: 32,
- setCharSpacing: 33,
- setWordSpacing: 34,
- setHScale: 35,
- setLeading: 36,
- setFont: 37,
- setTextRenderingMode: 38,
- setTextRise: 39,
- moveText: 40,
- setLeadingMoveText: 41,
- setTextMatrix: 42,
- nextLine: 43,
- showText: 44,
- showSpacedText: 45,
- nextLineShowText: 46,
- nextLineSetSpacingShowText: 47,
- setCharWidth: 48,
- setCharWidthAndBounds: 49,
- setStrokeColorSpace: 50,
- setFillColorSpace: 51,
- setStrokeColor: 52,
- setStrokeColorN: 53,
- setFillColor: 54,
- setFillColorN: 55,
- setStrokeGray: 56,
- setFillGray: 57,
- setStrokeRGBColor: 58,
- setFillRGBColor: 59,
- setStrokeCMYKColor: 60,
- setFillCMYKColor: 61,
- shadingFill: 62,
- beginInlineImage: 63,
- beginImageData: 64,
- endInlineImage: 65,
- paintXObject: 66,
- markPoint: 67,
- markPointProps: 68,
- beginMarkedContent: 69,
- beginMarkedContentProps: 70,
- endMarkedContent: 71,
- beginCompat: 72,
- endCompat: 73,
- paintFormXObjectBegin: 74,
- paintFormXObjectEnd: 75,
- beginGroup: 76,
- endGroup: 77,
- beginAnnotations: 78,
- endAnnotations: 79,
- beginAnnotation: 80,
- endAnnotation: 81,
- paintJpegXObject: 82,
- paintImageMaskXObject: 83,
- paintImageMaskXObjectGroup: 84,
- paintImageXObject: 85,
- paintInlineImageXObject: 86,
- paintInlineImageXObjectGroup: 87,
- paintImageXObjectRepeat: 88,
- paintImageMaskXObjectRepeat: 89,
- paintSolidColorImageMask: 90,
- constructPath: 91
-};
-
-var verbosity = VERBOSITY_LEVELS.warnings;
-
-function setVerbosityLevel(level) {
- verbosity = level;
-}
-
-function getVerbosityLevel() {
- return verbosity;
-}
-
-// A notice for devs. These are good for things that are helpful to devs, such
-// as warning that Workers were disabled, which is important to devs but not
-// end users.
-function info(msg) {
- if (verbosity >= VERBOSITY_LEVELS.infos) {
- console.log('Info: ' + msg);
- }
-}
-
-// Non-fatal warnings.
-function warn(msg) {
- if (verbosity >= VERBOSITY_LEVELS.warnings) {
- console.log('Warning: ' + msg);
- }
-}
-
-// Deprecated API function -- display regardless of the PDFJS.verbosity setting.
-function deprecated(details) {
- console.log('Deprecated API usage: ' + details);
-}
-
-// Fatal errors that should trigger the fallback UI and halt execution by
-// throwing an exception.
-function error(msg) {
- if (verbosity >= VERBOSITY_LEVELS.errors) {
- console.log('Error: ' + msg);
- console.log(backtrace());
- }
- throw new Error(msg);
-}
-
-function backtrace() {
- try {
- throw new Error();
- } catch (e) {
- return e.stack ? e.stack.split('\n').slice(2).join('\n') : '';
- }
-}
-
-function assert(cond, msg) {
- if (!cond) {
- error(msg);
- }
-}
-
-var UNSUPPORTED_FEATURES = {
- unknown: 'unknown',
- forms: 'forms',
- javaScript: 'javaScript',
- smask: 'smask',
- shadingPattern: 'shadingPattern',
- font: 'font'
-};
-
-// Checks if URLs have the same origin. For non-HTTP based URLs, returns false.
-function isSameOrigin(baseUrl, otherUrl) {
- try {
- var base = new URL(baseUrl);
- if (!base.origin || base.origin === 'null') {
- return false; // non-HTTP url
- }
- } catch (e) {
- return false;
- }
-
- var other = new URL(otherUrl, base);
- return base.origin === other.origin;
-}
-
-// Validates if URL is safe and allowed, e.g. to avoid XSS.
-function isValidUrl(url, allowRelative) {
- if (!url || typeof url !== 'string') {
- return false;
- }
- // RFC 3986 (http://tools.ietf.org/html/rfc3986#section-3.1)
- // scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
- var protocol = /^[a-z][a-z0-9+\-.]*(?=:)/i.exec(url);
- if (!protocol) {
- return allowRelative;
- }
- protocol = protocol[0].toLowerCase();
- switch (protocol) {
- case 'http':
- case 'https':
- case 'ftp':
- case 'mailto':
- case 'tel':
- return true;
- default:
- return false;
- }
-}
-
-function shadow(obj, prop, value) {
- Object.defineProperty(obj, prop, { value: value,
- enumerable: true,
- configurable: true,
- writable: false });
- return value;
-}
-
-function getLookupTableFactory(initializer) {
- var lookup;
- return function () {
- if (initializer) {
- lookup = Object.create(null);
- initializer(lookup);
- initializer = null;
- }
- return lookup;
- };
-}
-
-var PasswordResponses = {
- NEED_PASSWORD: 1,
- INCORRECT_PASSWORD: 2
-};
-
-var PasswordException = (function PasswordExceptionClosure() {
- function PasswordException(msg, code) {
- this.name = 'PasswordException';
- this.message = msg;
- this.code = code;
- }
-
- PasswordException.prototype = new Error();
- PasswordException.constructor = PasswordException;
-
- return PasswordException;
-})();
-
-var UnknownErrorException = (function UnknownErrorExceptionClosure() {
- function UnknownErrorException(msg, details) {
- this.name = 'UnknownErrorException';
- this.message = msg;
- this.details = details;
- }
-
- UnknownErrorException.prototype = new Error();
- UnknownErrorException.constructor = UnknownErrorException;
-
- return UnknownErrorException;
-})();
-
-var InvalidPDFException = (function InvalidPDFExceptionClosure() {
- function InvalidPDFException(msg) {
- this.name = 'InvalidPDFException';
- this.message = msg;
- }
-
- InvalidPDFException.prototype = new Error();
- InvalidPDFException.constructor = InvalidPDFException;
-
- return InvalidPDFException;
-})();
-
-var MissingPDFException = (function MissingPDFExceptionClosure() {
- function MissingPDFException(msg) {
- this.name = 'MissingPDFException';
- this.message = msg;
- }
-
- MissingPDFException.prototype = new Error();
- MissingPDFException.constructor = MissingPDFException;
-
- return MissingPDFException;
-})();
-
-var UnexpectedResponseException =
- (function UnexpectedResponseExceptionClosure() {
- function UnexpectedResponseException(msg, status) {
- this.name = 'UnexpectedResponseException';
- this.message = msg;
- this.status = status;
- }
-
- UnexpectedResponseException.prototype = new Error();
- UnexpectedResponseException.constructor = UnexpectedResponseException;
-
- return UnexpectedResponseException;
-})();
-
-var NotImplementedException = (function NotImplementedExceptionClosure() {
- function NotImplementedException(msg) {
- this.message = msg;
- }
-
- NotImplementedException.prototype = new Error();
- NotImplementedException.prototype.name = 'NotImplementedException';
- NotImplementedException.constructor = NotImplementedException;
-
- return NotImplementedException;
-})();
-
-var MissingDataException = (function MissingDataExceptionClosure() {
- function MissingDataException(begin, end) {
- this.begin = begin;
- this.end = end;
- this.message = 'Missing data [' + begin + ', ' + end + ')';
- }
-
- MissingDataException.prototype = new Error();
- MissingDataException.prototype.name = 'MissingDataException';
- MissingDataException.constructor = MissingDataException;
-
- return MissingDataException;
-})();
-
-var XRefParseException = (function XRefParseExceptionClosure() {
- function XRefParseException(msg) {
- this.message = msg;
- }
-
- XRefParseException.prototype = new Error();
- XRefParseException.prototype.name = 'XRefParseException';
- XRefParseException.constructor = XRefParseException;
-
- return XRefParseException;
-})();
-
-var NullCharactersRegExp = /\x00/g;
-
-function removeNullCharacters(str) {
- if (typeof str !== 'string') {
- warn('The argument for removeNullCharacters must be a string.');
- return str;
- }
- return str.replace(NullCharactersRegExp, '');
-}
-
-function bytesToString(bytes) {
- assert(bytes !== null && typeof bytes === 'object' &&
- bytes.length !== undefined, 'Invalid argument for bytesToString');
- var length = bytes.length;
- var MAX_ARGUMENT_COUNT = 8192;
- if (length < MAX_ARGUMENT_COUNT) {
- return String.fromCharCode.apply(null, bytes);
- }
- var strBuf = [];
- for (var i = 0; i < length; i += MAX_ARGUMENT_COUNT) {
- var chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length);
- var chunk = bytes.subarray(i, chunkEnd);
- strBuf.push(String.fromCharCode.apply(null, chunk));
- }
- return strBuf.join('');
-}
-
-function stringToBytes(str) {
- assert(typeof str === 'string', 'Invalid argument for stringToBytes');
- var length = str.length;
- var bytes = new Uint8Array(length);
- for (var i = 0; i < length; ++i) {
- bytes[i] = str.charCodeAt(i) & 0xFF;
- }
- return bytes;
-}
-
-/**
- * Gets length of the array (Array, Uint8Array, or string) in bytes.
- * @param {Array|Uint8Array|string} arr
- * @returns {number}
- */
-function arrayByteLength(arr) {
- if (arr.length !== undefined) {
- return arr.length;
- }
- assert(arr.byteLength !== undefined);
- return arr.byteLength;
-}
-
-/**
- * Combines array items (arrays) into single Uint8Array object.
- * @param {Array} arr - the array of the arrays (Array, Uint8Array, or string).
- * @returns {Uint8Array}
- */
-function arraysToBytes(arr) {
- // Shortcut: if first and only item is Uint8Array, return it.
- if (arr.length === 1 && (arr[0] instanceof Uint8Array)) {
- return arr[0];
- }
- var resultLength = 0;
- var i, ii = arr.length;
- var item, itemLength ;
- for (i = 0; i < ii; i++) {
- item = arr[i];
- itemLength = arrayByteLength(item);
- resultLength += itemLength;
- }
- var pos = 0;
- var data = new Uint8Array(resultLength);
- for (i = 0; i < ii; i++) {
- item = arr[i];
- if (!(item instanceof Uint8Array)) {
- if (typeof item === 'string') {
- item = stringToBytes(item);
- } else {
- item = new Uint8Array(item);
- }
- }
- itemLength = item.byteLength;
- data.set(item, pos);
- pos += itemLength;
- }
- return data;
-}
-
-function string32(value) {
- return String.fromCharCode((value >> 24) & 0xff, (value >> 16) & 0xff,
- (value >> 8) & 0xff, value & 0xff);
-}
-
-function log2(x) {
- var n = 1, i = 0;
- while (x > n) {
- n <<= 1;
- i++;
- }
- return i;
-}
-
-function readInt8(data, start) {
- return (data[start] << 24) >> 24;
-}
-
-function readUint16(data, offset) {
- return (data[offset] << 8) | data[offset + 1];
-}
-
-function readUint32(data, offset) {
- return ((data[offset] << 24) | (data[offset + 1] << 16) |
- (data[offset + 2] << 8) | data[offset + 3]) >>> 0;
-}
-
-// Lazy test the endianness of the platform
-// NOTE: This will be 'true' for simulated TypedArrays
-function isLittleEndian() {
- var buffer8 = new Uint8Array(2);
- buffer8[0] = 1;
- var buffer16 = new Uint16Array(buffer8.buffer);
- return (buffer16[0] === 1);
-}
-
-// Checks if it's possible to eval JS expressions.
-function isEvalSupported() {
- try {
- /* jshint evil: true */
- new Function('');
- return true;
- } catch (e) {
- return false;
- }
-}
-
-var Uint32ArrayView = (function Uint32ArrayViewClosure() {
-
- function Uint32ArrayView(buffer, length) {
- this.buffer = buffer;
- this.byteLength = buffer.length;
- this.length = length === undefined ? (this.byteLength >> 2) : length;
- ensureUint32ArrayViewProps(this.length);
- }
- Uint32ArrayView.prototype = Object.create(null);
-
- var uint32ArrayViewSetters = 0;
- function createUint32ArrayProp(index) {
- return {
- get: function () {
- var buffer = this.buffer, offset = index << 2;
- return (buffer[offset] | (buffer[offset + 1] << 8) |
- (buffer[offset + 2] << 16) | (buffer[offset + 3] << 24)) >>> 0;
- },
- set: function (value) {
- var buffer = this.buffer, offset = index << 2;
- buffer[offset] = value & 255;
- buffer[offset + 1] = (value >> 8) & 255;
- buffer[offset + 2] = (value >> 16) & 255;
- buffer[offset + 3] = (value >>> 24) & 255;
- }
- };
- }
-
- function ensureUint32ArrayViewProps(length) {
- while (uint32ArrayViewSetters < length) {
- Object.defineProperty(Uint32ArrayView.prototype,
- uint32ArrayViewSetters,
- createUint32ArrayProp(uint32ArrayViewSetters));
- uint32ArrayViewSetters++;
- }
- }
-
- return Uint32ArrayView;
-})();
-
-exports.Uint32ArrayView = Uint32ArrayView;
-
-var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
-
-var Util = (function UtilClosure() {
- function Util() {}
-
- var rgbBuf = ['rgb(', 0, ',', 0, ',', 0, ')'];
-
- // makeCssRgb() can be called thousands of times. Using |rgbBuf| avoids
- // creating many intermediate strings.
- Util.makeCssRgb = function Util_makeCssRgb(r, g, b) {
- rgbBuf[1] = r;
- rgbBuf[3] = g;
- rgbBuf[5] = b;
- return rgbBuf.join('');
- };
-
- // Concatenates two transformation matrices together and returns the result.
- Util.transform = function Util_transform(m1, m2) {
- return [
- m1[0] * m2[0] + m1[2] * m2[1],
- m1[1] * m2[0] + m1[3] * m2[1],
- m1[0] * m2[2] + m1[2] * m2[3],
- m1[1] * m2[2] + m1[3] * m2[3],
- m1[0] * m2[4] + m1[2] * m2[5] + m1[4],
- m1[1] * m2[4] + m1[3] * m2[5] + m1[5]
- ];
- };
-
- // For 2d affine transforms
- Util.applyTransform = function Util_applyTransform(p, m) {
- var xt = p[0] * m[0] + p[1] * m[2] + m[4];
- var yt = p[0] * m[1] + p[1] * m[3] + m[5];
- return [xt, yt];
- };
-
- Util.applyInverseTransform = function Util_applyInverseTransform(p, m) {
- var d = m[0] * m[3] - m[1] * m[2];
- var xt = (p[0] * m[3] - p[1] * m[2] + m[2] * m[5] - m[4] * m[3]) / d;
- var yt = (-p[0] * m[1] + p[1] * m[0] + m[4] * m[1] - m[5] * m[0]) / d;
- return [xt, yt];
- };
-
- // Applies the transform to the rectangle and finds the minimum axially
- // aligned bounding box.
- Util.getAxialAlignedBoundingBox =
- function Util_getAxialAlignedBoundingBox(r, m) {
-
- var p1 = Util.applyTransform(r, m);
- var p2 = Util.applyTransform(r.slice(2, 4), m);
- var p3 = Util.applyTransform([r[0], r[3]], m);
- var p4 = Util.applyTransform([r[2], r[1]], m);
- return [
- Math.min(p1[0], p2[0], p3[0], p4[0]),
- Math.min(p1[1], p2[1], p3[1], p4[1]),
- Math.max(p1[0], p2[0], p3[0], p4[0]),
- Math.max(p1[1], p2[1], p3[1], p4[1])
- ];
- };
-
- Util.inverseTransform = function Util_inverseTransform(m) {
- var d = m[0] * m[3] - m[1] * m[2];
- return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d,
- (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d];
- };
-
- // Apply a generic 3d matrix M on a 3-vector v:
- // | a b c | | X |
- // | d e f | x | Y |
- // | g h i | | Z |
- // M is assumed to be serialized as [a,b,c,d,e,f,g,h,i],
- // with v as [X,Y,Z]
- Util.apply3dTransform = function Util_apply3dTransform(m, v) {
- return [
- m[0] * v[0] + m[1] * v[1] + m[2] * v[2],
- m[3] * v[0] + m[4] * v[1] + m[5] * v[2],
- m[6] * v[0] + m[7] * v[1] + m[8] * v[2]
- ];
- };
-
- // This calculation uses Singular Value Decomposition.
- // The SVD can be represented with formula A = USV. We are interested in the
- // matrix S here because it represents the scale values.
- Util.singularValueDecompose2dScale =
- function Util_singularValueDecompose2dScale(m) {
-
- var transpose = [m[0], m[2], m[1], m[3]];
-
- // Multiply matrix m with its transpose.
- var a = m[0] * transpose[0] + m[1] * transpose[2];
- var b = m[0] * transpose[1] + m[1] * transpose[3];
- var c = m[2] * transpose[0] + m[3] * transpose[2];
- var d = m[2] * transpose[1] + m[3] * transpose[3];
-
- // Solve the second degree polynomial to get roots.
- var first = (a + d) / 2;
- var second = Math.sqrt((a + d) * (a + d) - 4 * (a * d - c * b)) / 2;
- var sx = first + second || 1;
- var sy = first - second || 1;
-
- // Scale values are the square roots of the eigenvalues.
- return [Math.sqrt(sx), Math.sqrt(sy)];
- };
-
- // Normalize rectangle rect=[x1, y1, x2, y2] so that (x1,y1) < (x2,y2)
- // For coordinate systems whose origin lies in the bottom-left, this
- // means normalization to (BL,TR) ordering. For systems with origin in the
- // top-left, this means (TL,BR) ordering.
- Util.normalizeRect = function Util_normalizeRect(rect) {
- var r = rect.slice(0); // clone rect
- if (rect[0] > rect[2]) {
- r[0] = rect[2];
- r[2] = rect[0];
- }
- if (rect[1] > rect[3]) {
- r[1] = rect[3];
- r[3] = rect[1];
- }
- return r;
- };
-
- // Returns a rectangle [x1, y1, x2, y2] corresponding to the
- // intersection of rect1 and rect2. If no intersection, returns 'false'
- // The rectangle coordinates of rect1, rect2 should be [x1, y1, x2, y2]
- Util.intersect = function Util_intersect(rect1, rect2) {
- function compare(a, b) {
- return a - b;
- }
-
- // Order points along the axes
- var orderedX = [rect1[0], rect1[2], rect2[0], rect2[2]].sort(compare),
- orderedY = [rect1[1], rect1[3], rect2[1], rect2[3]].sort(compare),
- result = [];
-
- rect1 = Util.normalizeRect(rect1);
- rect2 = Util.normalizeRect(rect2);
-
- // X: first and second points belong to different rectangles?
- if ((orderedX[0] === rect1[0] && orderedX[1] === rect2[0]) ||
- (orderedX[0] === rect2[0] && orderedX[1] === rect1[0])) {
- // Intersection must be between second and third points
- result[0] = orderedX[1];
- result[2] = orderedX[2];
- } else {
- return false;
- }
-
- // Y: first and second points belong to different rectangles?
- if ((orderedY[0] === rect1[1] && orderedY[1] === rect2[1]) ||
- (orderedY[0] === rect2[1] && orderedY[1] === rect1[1])) {
- // Intersection must be between second and third points
- result[1] = orderedY[1];
- result[3] = orderedY[2];
- } else {
- return false;
- }
-
- return result;
- };
-
- Util.sign = function Util_sign(num) {
- return num < 0 ? -1 : 1;
- };
-
- var ROMAN_NUMBER_MAP = [
- '', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM',
- '', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC',
- '', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX'
- ];
- /**
- * Converts positive integers to (upper case) Roman numerals.
- * @param {integer} number - The number that should be converted.
- * @param {boolean} lowerCase - Indicates if the result should be converted
- * to lower case letters. The default is false.
- * @return {string} The resulting Roman number.
- */
- Util.toRoman = function Util_toRoman(number, lowerCase) {
- assert(isInt(number) && number > 0,
- 'The number should be a positive integer.');
- var pos, romanBuf = [];
- // Thousands
- while (number >= 1000) {
- number -= 1000;
- romanBuf.push('M');
- }
- // Hundreds
- pos = (number / 100) | 0;
- number %= 100;
- romanBuf.push(ROMAN_NUMBER_MAP[pos]);
- // Tens
- pos = (number / 10) | 0;
- number %= 10;
- romanBuf.push(ROMAN_NUMBER_MAP[10 + pos]);
- // Ones
- romanBuf.push(ROMAN_NUMBER_MAP[20 + number]);
-
- var romanStr = romanBuf.join('');
- return (lowerCase ? romanStr.toLowerCase() : romanStr);
- };
-
- Util.appendToArray = function Util_appendToArray(arr1, arr2) {
- Array.prototype.push.apply(arr1, arr2);
- };
-
- Util.prependToArray = function Util_prependToArray(arr1, arr2) {
- Array.prototype.unshift.apply(arr1, arr2);
- };
-
- Util.extendObj = function extendObj(obj1, obj2) {
- for (var key in obj2) {
- obj1[key] = obj2[key];
- }
- };
-
- Util.getInheritableProperty = function Util_getInheritableProperty(dict,
- name) {
- while (dict && !dict.has(name)) {
- dict = dict.get('Parent');
- }
- if (!dict) {
- return null;
- }
- return dict.get(name);
- };
-
- Util.inherit = function Util_inherit(sub, base, prototype) {
- sub.prototype = Object.create(base.prototype);
- sub.prototype.constructor = sub;
- for (var prop in prototype) {
- sub.prototype[prop] = prototype[prop];
- }
- };
-
- Util.loadScript = function Util_loadScript(src, callback) {
- var script = document.createElement('script');
- var loaded = false;
- script.setAttribute('src', src);
- if (callback) {
- script.onload = function() {
- if (!loaded) {
- callback();
- }
- loaded = true;
- };
- }
- document.getElementsByTagName('head')[0].appendChild(script);
- };
-
- return Util;
-})();
-
-/**
- * PDF page viewport created based on scale, rotation and offset.
- * @class
- * @alias PageViewport
- */
-var PageViewport = (function PageViewportClosure() {
- /**
- * @constructor
- * @private
- * @param viewBox {Array} xMin, yMin, xMax and yMax coordinates.
- * @param scale {number} scale of the viewport.
- * @param rotation {number} rotations of the viewport in degrees.
- * @param offsetX {number} offset X
- * @param offsetY {number} offset Y
- * @param dontFlip {boolean} if true, axis Y will not be flipped.
- */
- function PageViewport(viewBox, scale, rotation, offsetX, offsetY, dontFlip) {
- this.viewBox = viewBox;
- this.scale = scale;
- this.rotation = rotation;
- this.offsetX = offsetX;
- this.offsetY = offsetY;
-
- // creating transform to convert pdf coordinate system to the normal
- // canvas like coordinates taking in account scale and rotation
- var centerX = (viewBox[2] + viewBox[0]) / 2;
- var centerY = (viewBox[3] + viewBox[1]) / 2;
- var rotateA, rotateB, rotateC, rotateD;
- rotation = rotation % 360;
- rotation = rotation < 0 ? rotation + 360 : rotation;
- switch (rotation) {
- case 180:
- rotateA = -1; rotateB = 0; rotateC = 0; rotateD = 1;
- break;
- case 90:
- rotateA = 0; rotateB = 1; rotateC = 1; rotateD = 0;
- break;
- case 270:
- rotateA = 0; rotateB = -1; rotateC = -1; rotateD = 0;
- break;
- //case 0:
- default:
- rotateA = 1; rotateB = 0; rotateC = 0; rotateD = -1;
- break;
- }
-
- if (dontFlip) {
- rotateC = -rotateC; rotateD = -rotateD;
- }
-
- var offsetCanvasX, offsetCanvasY;
- var width, height;
- if (rotateA === 0) {
- offsetCanvasX = Math.abs(centerY - viewBox[1]) * scale + offsetX;
- offsetCanvasY = Math.abs(centerX - viewBox[0]) * scale + offsetY;
- width = Math.abs(viewBox[3] - viewBox[1]) * scale;
- height = Math.abs(viewBox[2] - viewBox[0]) * scale;
- } else {
- offsetCanvasX = Math.abs(centerX - viewBox[0]) * scale + offsetX;
- offsetCanvasY = Math.abs(centerY - viewBox[1]) * scale + offsetY;
- width = Math.abs(viewBox[2] - viewBox[0]) * scale;
- height = Math.abs(viewBox[3] - viewBox[1]) * scale;
- }
- // creating transform for the following operations:
- // translate(-centerX, -centerY), rotate and flip vertically,
- // scale, and translate(offsetCanvasX, offsetCanvasY)
- this.transform = [
- rotateA * scale,
- rotateB * scale,
- rotateC * scale,
- rotateD * scale,
- offsetCanvasX - rotateA * scale * centerX - rotateC * scale * centerY,
- offsetCanvasY - rotateB * scale * centerX - rotateD * scale * centerY
- ];
-
- this.width = width;
- this.height = height;
- this.fontScale = scale;
- }
- PageViewport.prototype = /** @lends PageViewport.prototype */ {
- /**
- * Clones viewport with additional properties.
- * @param args {Object} (optional) If specified, may contain the 'scale' or
- * 'rotation' properties to override the corresponding properties in
- * the cloned viewport.
- * @returns {PageViewport} Cloned viewport.
- */
- clone: function PageViewPort_clone(args) {
- args = args || {};
- var scale = 'scale' in args ? args.scale : this.scale;
- var rotation = 'rotation' in args ? args.rotation : this.rotation;
- return new PageViewport(this.viewBox.slice(), scale, rotation,
- this.offsetX, this.offsetY, args.dontFlip);
- },
- /**
- * Converts PDF point to the viewport coordinates. For examples, useful for
- * converting PDF location into canvas pixel coordinates.
- * @param x {number} X coordinate.
- * @param y {number} Y coordinate.
- * @returns {Object} Object that contains 'x' and 'y' properties of the
- * point in the viewport coordinate space.
- * @see {@link convertToPdfPoint}
- * @see {@link convertToViewportRectangle}
- */
- convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) {
- return Util.applyTransform([x, y], this.transform);
- },
- /**
- * Converts PDF rectangle to the viewport coordinates.
- * @param rect {Array} xMin, yMin, xMax and yMax coordinates.
- * @returns {Array} Contains corresponding coordinates of the rectangle
- * in the viewport coordinate space.
- * @see {@link convertToViewportPoint}
- */
- convertToViewportRectangle:
- function PageViewport_convertToViewportRectangle(rect) {
- var tl = Util.applyTransform([rect[0], rect[1]], this.transform);
- var br = Util.applyTransform([rect[2], rect[3]], this.transform);
- return [tl[0], tl[1], br[0], br[1]];
- },
- /**
- * Converts viewport coordinates to the PDF location. For examples, useful
- * for converting canvas pixel location into PDF one.
- * @param x {number} X coordinate.
- * @param y {number} Y coordinate.
- * @returns {Object} Object that contains 'x' and 'y' properties of the
- * point in the PDF coordinate space.
- * @see {@link convertToViewportPoint}
- */
- convertToPdfPoint: function PageViewport_convertToPdfPoint(x, y) {
- return Util.applyInverseTransform([x, y], this.transform);
- }
- };
- return PageViewport;
-})();
-
-var PDFStringTranslateTable = [
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0x2D8, 0x2C7, 0x2C6, 0x2D9, 0x2DD, 0x2DB, 0x2DA, 0x2DC, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2022, 0x2020, 0x2021, 0x2026, 0x2014,
- 0x2013, 0x192, 0x2044, 0x2039, 0x203A, 0x2212, 0x2030, 0x201E, 0x201C,
- 0x201D, 0x2018, 0x2019, 0x201A, 0x2122, 0xFB01, 0xFB02, 0x141, 0x152, 0x160,
- 0x178, 0x17D, 0x131, 0x142, 0x153, 0x161, 0x17E, 0, 0x20AC
-];
-
-function stringToPDFString(str) {
- var i, n = str.length, strBuf = [];
- if (str[0] === '\xFE' && str[1] === '\xFF') {
- // UTF16BE BOM
- for (i = 2; i < n; i += 2) {
- strBuf.push(String.fromCharCode(
- (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1)));
- }
- } else {
- for (i = 0; i < n; ++i) {
- var code = PDFStringTranslateTable[str.charCodeAt(i)];
- strBuf.push(code ? String.fromCharCode(code) : str.charAt(i));
- }
- }
- return strBuf.join('');
-}
-
-function stringToUTF8String(str) {
- return decodeURIComponent(escape(str));
-}
-
-function utf8StringToString(str) {
- return unescape(encodeURIComponent(str));
-}
-
-function isEmptyObj(obj) {
- for (var key in obj) {
- return false;
- }
- return true;
-}
-
-function isBool(v) {
- return typeof v === 'boolean';
-}
-
-function isInt(v) {
- return typeof v === 'number' && ((v | 0) === v);
-}
-
-function isNum(v) {
- return typeof v === 'number';
-}
-
-function isString(v) {
- return typeof v === 'string';
-}
-
-function isArray(v) {
- return v instanceof Array;
-}
-
-function isArrayBuffer(v) {
- return typeof v === 'object' && v !== null && v.byteLength !== undefined;
-}
-
-// Checks if ch is one of the following characters: SPACE, TAB, CR or LF.
-function isSpace(ch) {
- return (ch === 0x20 || ch === 0x09 || ch === 0x0D || ch === 0x0A);
-}
-
-/**
- * Promise Capability object.
- *
- * @typedef {Object} PromiseCapability
- * @property {Promise} promise - A promise object.
- * @property {function} resolve - Fulfills the promise.
- * @property {function} reject - Rejects the promise.
- */
-
-/**
- * Creates a promise capability object.
- * @alias createPromiseCapability
- *
- * @return {PromiseCapability} A capability object contains:
- * - a Promise, resolve and reject methods.
- */
-function createPromiseCapability() {
- var capability = {};
- capability.promise = new Promise(function (resolve, reject) {
- capability.resolve = resolve;
- capability.reject = reject;
- });
- return capability;
-}
-
-/**
- * Polyfill for Promises:
- * The following promise implementation tries to generally implement the
- * Promise/A+ spec. Some notable differences from other promise libraries are:
- * - There currently isn't a separate 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} promises array of data and/or promises to wait for.
- * @return {Promise} New dependent 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;
-})();
-
-(function WeakMapClosure() {
- if (globalScope.WeakMap) {
- return;
- }
-
- var id = 0;
- function WeakMap() {
- this.id = '$weakmap' + (id++);
- }
- WeakMap.prototype = {
- has: function(obj) {
- return !!Object.getOwnPropertyDescriptor(obj, this.id);
- },
- get: function(obj, defaultValue) {
- return this.has(obj) ? obj[this.id] : defaultValue;
- },
- set: function(obj, value) {
- Object.defineProperty(obj, this.id, {
- value: value,
- enumerable: false,
- configurable: true
- });
- },
- delete: function(obj) {
- delete obj[this.id];
- }
- };
-
- globalScope.WeakMap = WeakMap;
-})();
-
-var StatTimer = (function StatTimerClosure() {
- function rpad(str, pad, length) {
- while (str.length < length) {
- str += pad;
- }
- return str;
- }
- function StatTimer() {
- this.started = Object.create(null);
- this.times = [];
- this.enabled = true;
- }
- StatTimer.prototype = {
- time: function StatTimer_time(name) {
- if (!this.enabled) {
- return;
- }
- if (name in this.started) {
- warn('Timer is already running for ' + name);
- }
- this.started[name] = Date.now();
- },
- timeEnd: function StatTimer_timeEnd(name) {
- if (!this.enabled) {
- return;
- }
- if (!(name in this.started)) {
- warn('Timer has not been started for ' + name);
- }
- this.times.push({
- 'name': name,
- 'start': this.started[name],
- 'end': Date.now()
- });
- // Remove timer from started so it can be called again.
- delete this.started[name];
- },
- toString: function StatTimer_toString() {
- var i, ii;
- var times = this.times;
- var out = '';
- // Find the longest name for padding purposes.
- var longest = 0;
- for (i = 0, ii = times.length; i < ii; ++i) {
- var name = times[i]['name'];
- if (name.length > longest) {
- longest = name.length;
- }
- }
- for (i = 0, ii = times.length; i < ii; ++i) {
- var span = times[i];
- var duration = span.end - span.start;
- out += rpad(span['name'], ' ', longest) + ' ' + duration + 'ms\n';
- }
- return out;
- }
- };
- return StatTimer;
-})();
-
-var createBlob = function createBlob(data, contentType) {
- if (typeof Blob !== 'undefined') {
- return new Blob([data], { type: contentType });
- }
- warn('The "Blob" constructor is not supported.');
-};
-
-var createObjectURL = (function createObjectURLClosure() {
- // Blob/createObjectURL is not available, falling back to data schema.
- var digits =
- 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
-
- return function createObjectURL(data, contentType, forceDataSchema) {
- if (!forceDataSchema &&
- typeof URL !== 'undefined' && URL.createObjectURL) {
- var blob = createBlob(data, contentType);
- return URL.createObjectURL(blob);
- }
-
- var buffer = 'data:' + contentType + ';base64,';
- for (var i = 0, ii = data.length; i < ii; i += 3) {
- var b1 = data[i] & 0xFF;
- var b2 = data[i + 1] & 0xFF;
- var b3 = data[i + 2] & 0xFF;
- var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4);
- var d3 = i + 1 < ii ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64;
- var d4 = i + 2 < ii ? (b3 & 0x3F) : 64;
- buffer += digits[d1] + digits[d2] + digits[d3] + digits[d4];
- }
- return buffer;
- };
-})();
-
-function MessageHandler(sourceName, targetName, comObj) {
- this.sourceName = sourceName;
- this.targetName = targetName;
- this.comObj = comObj;
- this.callbackIndex = 1;
- this.postMessageTransfers = true;
- var callbacksCapabilities = this.callbacksCapabilities = Object.create(null);
- var ah = this.actionHandler = Object.create(null);
-
- this._onComObjOnMessage = function messageHandlerComObjOnMessage(event) {
- var data = event.data;
- if (data.targetName !== this.sourceName) {
- return;
- }
- if (data.isReply) {
- var callbackId = data.callbackId;
- if (data.callbackId in callbacksCapabilities) {
- var callback = callbacksCapabilities[callbackId];
- delete callbacksCapabilities[callbackId];
- if ('error' in data) {
- callback.reject(data.error);
- } else {
- callback.resolve(data.data);
- }
- } else {
- error('Cannot resolve callback ' + callbackId);
- }
- } else if (data.action in ah) {
- var action = ah[data.action];
- if (data.callbackId) {
- var sourceName = this.sourceName;
- var targetName = data.sourceName;
- Promise.resolve().then(function () {
- return action[0].call(action[1], data.data);
- }).then(function (result) {
- comObj.postMessage({
- sourceName: sourceName,
- targetName: targetName,
- isReply: true,
- callbackId: data.callbackId,
- data: result
- });
- }, function (reason) {
- if (reason instanceof Error) {
- // Serialize error to avoid "DataCloneError"
- reason = reason + '';
- }
- comObj.postMessage({
- sourceName: sourceName,
- targetName: targetName,
- isReply: true,
- callbackId: data.callbackId,
- error: reason
- });
- });
- } else {
- action[0].call(action[1], data.data);
- }
- } else {
- error('Unknown action from worker: ' + data.action);
- }
- }.bind(this);
- comObj.addEventListener('message', this._onComObjOnMessage);
-}
-
-MessageHandler.prototype = {
- on: function messageHandlerOn(actionName, handler, scope) {
- var ah = this.actionHandler;
- if (ah[actionName]) {
- error('There is already an actionName called "' + actionName + '"');
- }
- ah[actionName] = [handler, scope];
- },
- /**
- * Sends a message to the comObj to invoke the action with the supplied data.
- * @param {String} actionName Action to call.
- * @param {JSON} data JSON data to send.
- * @param {Array} [transfers] Optional list of transfers/ArrayBuffers
- */
- send: function messageHandlerSend(actionName, data, transfers) {
- var message = {
- sourceName: this.sourceName,
- targetName: this.targetName,
- action: actionName,
- data: data
- };
- this.postMessage(message, transfers);
- },
- /**
- * Sends a message to the comObj to invoke the action with the supplied data.
- * Expects that other side will callback with the response.
- * @param {String} actionName Action to call.
- * @param {JSON} data JSON data to send.
- * @param {Array} [transfers] Optional list of transfers/ArrayBuffers.
- * @returns {Promise} Promise to be resolved with response data.
- */
- sendWithPromise:
- function messageHandlerSendWithPromise(actionName, data, transfers) {
- var callbackId = this.callbackIndex++;
- var message = {
- sourceName: this.sourceName,
- targetName: this.targetName,
- action: actionName,
- data: data,
- callbackId: callbackId
- };
- var capability = createPromiseCapability();
- this.callbacksCapabilities[callbackId] = capability;
- try {
- this.postMessage(message, transfers);
- } catch (e) {
- capability.reject(e);
- }
- return capability.promise;
- },
- /**
- * Sends raw message to the comObj.
- * @private
- * @param message {Object} Raw message.
- * @param transfers List of transfers/ArrayBuffers, or undefined.
- */
- postMessage: function (message, transfers) {
- if (transfers && this.postMessageTransfers) {
- this.comObj.postMessage(message, transfers);
- } else {
- this.comObj.postMessage(message);
- }
- },
-
- destroy: function () {
- this.comObj.removeEventListener('message', this._onComObjOnMessage);
- }
-};
-
-function loadJpegStream(id, imageUrl, objs) {
- var img = new Image();
- img.onload = (function loadJpegStream_onloadClosure() {
- objs.resolve(id, img);
- });
- img.onerror = (function loadJpegStream_onerrorClosure() {
- objs.resolve(id, null);
- warn('Error during JPEG image loading');
- });
- img.src = imageUrl;
-}
-
- // Polyfill from https://github.com/Polymer/URL
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-(function checkURLConstructor(scope) {
- // 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, 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);
- if (null !== this._password) {
- this._password += tempC;
- } else {
- 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;
-})(globalScope);
-
-exports.FONT_IDENTITY_MATRIX = FONT_IDENTITY_MATRIX;
-exports.IDENTITY_MATRIX = IDENTITY_MATRIX;
-exports.OPS = OPS;
-exports.VERBOSITY_LEVELS = VERBOSITY_LEVELS;
-exports.UNSUPPORTED_FEATURES = UNSUPPORTED_FEATURES;
-exports.AnnotationBorderStyleType = AnnotationBorderStyleType;
-exports.AnnotationFieldFlag = AnnotationFieldFlag;
-exports.AnnotationFlag = AnnotationFlag;
-exports.AnnotationType = AnnotationType;
-exports.FontType = FontType;
-exports.ImageKind = ImageKind;
-exports.InvalidPDFException = InvalidPDFException;
-exports.MessageHandler = MessageHandler;
-exports.MissingDataException = MissingDataException;
-exports.MissingPDFException = MissingPDFException;
-exports.NotImplementedException = NotImplementedException;
-exports.PageViewport = PageViewport;
-exports.PasswordException = PasswordException;
-exports.PasswordResponses = PasswordResponses;
-exports.StatTimer = StatTimer;
-exports.StreamType = StreamType;
-exports.TextRenderingMode = TextRenderingMode;
-exports.UnexpectedResponseException = UnexpectedResponseException;
-exports.UnknownErrorException = UnknownErrorException;
-exports.Util = Util;
-exports.XRefParseException = XRefParseException;
-exports.arrayByteLength = arrayByteLength;
-exports.arraysToBytes = arraysToBytes;
-exports.assert = assert;
-exports.bytesToString = bytesToString;
-exports.createBlob = createBlob;
-exports.createPromiseCapability = createPromiseCapability;
-exports.createObjectURL = createObjectURL;
-exports.deprecated = deprecated;
-exports.error = error;
-exports.getLookupTableFactory = getLookupTableFactory;
-exports.getVerbosityLevel = getVerbosityLevel;
-exports.globalScope = globalScope;
-exports.info = info;
-exports.isArray = isArray;
-exports.isArrayBuffer = isArrayBuffer;
-exports.isBool = isBool;
-exports.isEmptyObj = isEmptyObj;
-exports.isInt = isInt;
-exports.isNum = isNum;
-exports.isString = isString;
-exports.isSpace = isSpace;
-exports.isSameOrigin = isSameOrigin;
-exports.isValidUrl = isValidUrl;
-exports.isLittleEndian = isLittleEndian;
-exports.isEvalSupported = isEvalSupported;
-exports.loadJpegStream = loadJpegStream;
-exports.log2 = log2;
-exports.readInt8 = readInt8;
-exports.readUint16 = readUint16;
-exports.readUint32 = readUint32;
-exports.removeNullCharacters = removeNullCharacters;
-exports.setVerbosityLevel = setVerbosityLevel;
-exports.shadow = shadow;
-exports.string32 = string32;
-exports.stringToBytes = stringToBytes;
-exports.stringToPDFString = stringToPDFString;
-exports.stringToUTF8String = stringToUTF8String;
-exports.utf8StringToString = utf8StringToString;
-exports.warn = warn;
-}));
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsDisplayDOMUtils = {}), root.pdfjsSharedUtil);
- }
-}(this, function (exports, sharedUtil) {
-
-var removeNullCharacters = sharedUtil.removeNullCharacters;
-var warn = sharedUtil.warn;
-
-/**
- * Optimised CSS custom property getter/setter.
- * @class
- */
-var CustomStyle = (function CustomStyleClosure() {
-
- // As noted on: http://www.zachstronaut.com/posts/2009/02/17/
- // animate-css-transforms-firefox-webkit.html
- // in some versions of IE9 it is critical that ms appear in this list
- // before Moz
- var prefixes = ['ms', 'Moz', 'Webkit', 'O'];
- var _cache = Object.create(null);
-
- function CustomStyle() {}
-
- CustomStyle.getProp = function get(propName, element) {
- // check cache only when no element is given
- if (arguments.length === 1 && typeof _cache[propName] === 'string') {
- return _cache[propName];
- }
-
- element = element || document.documentElement;
- var style = element.style, prefixed, uPropName;
-
- // test standard property first
- if (typeof style[propName] === 'string') {
- return (_cache[propName] = propName);
- }
-
- // capitalize
- uPropName = propName.charAt(0).toUpperCase() + propName.slice(1);
-
- // test vendor specific properties
- for (var i = 0, l = prefixes.length; i < l; i++) {
- prefixed = prefixes[i] + uPropName;
- if (typeof style[prefixed] === 'string') {
- return (_cache[propName] = prefixed);
- }
- }
-
- //if all fails then set to undefined
- return (_cache[propName] = 'undefined');
- };
-
- CustomStyle.setProp = function set(propName, element, str) {
- var prop = this.getProp(propName);
- if (prop !== 'undefined') {
- element.style[prop] = str;
- }
- };
-
- return CustomStyle;
-})();
-
-function hasCanvasTypedArrays() {
- var canvas = document.createElement('canvas');
- canvas.width = canvas.height = 1;
- var ctx = canvas.getContext('2d');
- var imageData = ctx.createImageData(1, 1);
- return (typeof imageData.data.buffer !== 'undefined');
-}
-
-var LinkTarget = {
- NONE: 0, // Default value.
- SELF: 1,
- BLANK: 2,
- PARENT: 3,
- TOP: 4,
-};
-
-var LinkTargetStringMap = [
- '',
- '_self',
- '_blank',
- '_parent',
- '_top'
-];
-
-/**
- * @typedef ExternalLinkParameters
- * @typedef {Object} ExternalLinkParameters
- * @property {string} url - An absolute URL.
- * @property {LinkTarget} target - The link target.
- * @property {string} rel - The link relationship.
- */
-
-/**
- * Adds various attributes (href, title, target, rel) to hyperlinks.
- * @param {HTMLLinkElement} link - The link element.
- * @param {ExternalLinkParameters} params
- */
-function addLinkAttributes(link, params) {
- var url = params && params.url;
- link.href = link.title = (url ? removeNullCharacters(url) : '');
-
- if (url) {
- var target = params.target;
- if (typeof target === 'undefined') {
- target = getDefaultSetting('externalLinkTarget');
- }
- link.target = LinkTargetStringMap[target];
-
- var rel = params.rel;
- if (typeof rel === 'undefined') {
- rel = getDefaultSetting('externalLinkRel');
- }
- link.rel = rel;
- }
-}
-
-// Gets the file name from a given URL.
-function getFilenameFromUrl(url) {
- var anchor = url.indexOf('#');
- var query = url.indexOf('?');
- var end = Math.min(
- anchor > 0 ? anchor : url.length,
- query > 0 ? query : url.length);
- return url.substring(url.lastIndexOf('/', end) + 1, end);
-}
-
-function getDefaultSetting(id) {
- // The list of the settings and their default is maintained for backward
- // compatibility and shall not be extended or modified. See also global.js.
- var globalSettings = sharedUtil.globalScope.PDFJS;
- switch (id) {
- case 'pdfBug':
- return globalSettings ? globalSettings.pdfBug : false;
- case 'disableAutoFetch':
- return globalSettings ? globalSettings.disableAutoFetch : false;
- case 'disableStream':
- return globalSettings ? globalSettings.disableStream : false;
- case 'disableRange':
- return globalSettings ? globalSettings.disableRange : false;
- case 'disableFontFace':
- return globalSettings ? globalSettings.disableFontFace : false;
- case 'disableCreateObjectURL':
- return globalSettings ? globalSettings.disableCreateObjectURL : false;
- case 'disableWebGL':
- return globalSettings ? globalSettings.disableWebGL : true;
- case 'cMapUrl':
- return globalSettings ? globalSettings.cMapUrl : null;
- case 'cMapPacked':
- return globalSettings ? globalSettings.cMapPacked : false;
- case 'postMessageTransfers':
- return globalSettings ? globalSettings.postMessageTransfers : true;
- case 'workerSrc':
- return globalSettings ? globalSettings.workerSrc : null;
- case 'disableWorker':
- return globalSettings ? globalSettings.disableWorker : false;
- case 'maxImageSize':
- return globalSettings ? globalSettings.maxImageSize : -1;
- case 'imageResourcesPath':
- return globalSettings ? globalSettings.imageResourcesPath : '';
- case 'isEvalSupported':
- return globalSettings ? globalSettings.isEvalSupported : true;
- case 'externalLinkTarget':
- if (!globalSettings) {
- return LinkTarget.NONE;
- }
- switch (globalSettings.externalLinkTarget) {
- case LinkTarget.NONE:
- case LinkTarget.SELF:
- case LinkTarget.BLANK:
- case LinkTarget.PARENT:
- case LinkTarget.TOP:
- return globalSettings.externalLinkTarget;
- }
- warn('PDFJS.externalLinkTarget is invalid: ' +
- globalSettings.externalLinkTarget);
- // Reset the external link target, to suppress further warnings.
- globalSettings.externalLinkTarget = LinkTarget.NONE;
- return LinkTarget.NONE;
- case 'externalLinkRel':
- return globalSettings ? globalSettings.externalLinkRel : 'noreferrer';
- case 'enableStats':
- return !!(globalSettings && globalSettings.enableStats);
- default:
- throw new Error('Unknown default setting: ' + id);
- }
-}
-
-function isExternalLinkTargetSet() {
- var externalLinkTarget = getDefaultSetting('externalLinkTarget');
- switch (externalLinkTarget) {
- case LinkTarget.NONE:
- return false;
- case LinkTarget.SELF:
- case LinkTarget.BLANK:
- case LinkTarget.PARENT:
- case LinkTarget.TOP:
- return true;
- }
-}
-
-exports.CustomStyle = CustomStyle;
-exports.addLinkAttributes = addLinkAttributes;
-exports.isExternalLinkTargetSet = isExternalLinkTargetSet;
-exports.getFilenameFromUrl = getFilenameFromUrl;
-exports.LinkTarget = LinkTarget;
-exports.hasCanvasTypedArrays = hasCanvasTypedArrays;
-exports.getDefaultSetting = getDefaultSetting;
-}));
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsDisplayFontLoader = {}), root.pdfjsSharedUtil);
- }
-}(this, function (exports, sharedUtil) {
-
-var assert = sharedUtil.assert;
-var bytesToString = sharedUtil.bytesToString;
-var string32 = sharedUtil.string32;
-var shadow = sharedUtil.shadow;
-var warn = sharedUtil.warn;
-
-function FontLoader(docId) {
- this.docId = docId;
- this.styleElement = null;
- this.nativeFontFaces = [];
- this.loadTestFontId = 0;
- this.loadingContext = {
- requests: [],
- nextRequestId: 0
- };
-}
-FontLoader.prototype = {
- insertRule: function fontLoaderInsertRule(rule) {
- var styleElement = this.styleElement;
- if (!styleElement) {
- styleElement = this.styleElement = document.createElement('style');
- styleElement.id = 'PDFJS_FONT_STYLE_TAG_' + this.docId;
- document.documentElement.getElementsByTagName('head')[0].appendChild(
- styleElement);
- }
-
- var styleSheet = styleElement.sheet;
- styleSheet.insertRule(rule, styleSheet.cssRules.length);
- },
-
- clear: function fontLoaderClear() {
- var styleElement = this.styleElement;
- if (styleElement) {
- styleElement.parentNode.removeChild(styleElement);
- styleElement = this.styleElement = null;
- }
- this.nativeFontFaces.forEach(function(nativeFontFace) {
- document.fonts.delete(nativeFontFace);
- });
- this.nativeFontFaces.length = 0;
- },
- get loadTestFont() {
- // This is a CFF font with 1 glyph for '.' that fills its entire width and
- // height.
- return shadow(this, 'loadTestFont', atob(
- 'T1RUTwALAIAAAwAwQ0ZGIDHtZg4AAAOYAAAAgUZGVE1lkzZwAAAEHAAAABxHREVGABQAFQ' +
- 'AABDgAAAAeT1MvMlYNYwkAAAEgAAAAYGNtYXABDQLUAAACNAAAAUJoZWFk/xVFDQAAALwA' +
- 'AAA2aGhlYQdkA+oAAAD0AAAAJGhtdHgD6AAAAAAEWAAAAAZtYXhwAAJQAAAAARgAAAAGbm' +
- 'FtZVjmdH4AAAGAAAAAsXBvc3T/hgAzAAADeAAAACAAAQAAAAEAALZRFsRfDzz1AAsD6AAA' +
- 'AADOBOTLAAAAAM4KHDwAAAAAA+gDIQAAAAgAAgAAAAAAAAABAAADIQAAAFoD6AAAAAAD6A' +
- 'ABAAAAAAAAAAAAAAAAAAAAAQAAUAAAAgAAAAQD6AH0AAUAAAKKArwAAACMAooCvAAAAeAA' +
- 'MQECAAACAAYJAAAAAAAAAAAAAQAAAAAAAAAAAAAAAFBmRWQAwAAuAC4DIP84AFoDIQAAAA' +
- 'AAAQAAAAAAAAAAACAAIAABAAAADgCuAAEAAAAAAAAAAQAAAAEAAAAAAAEAAQAAAAEAAAAA' +
- 'AAIAAQAAAAEAAAAAAAMAAQAAAAEAAAAAAAQAAQAAAAEAAAAAAAUAAQAAAAEAAAAAAAYAAQ' +
- 'AAAAMAAQQJAAAAAgABAAMAAQQJAAEAAgABAAMAAQQJAAIAAgABAAMAAQQJAAMAAgABAAMA' +
- 'AQQJAAQAAgABAAMAAQQJAAUAAgABAAMAAQQJAAYAAgABWABYAAAAAAAAAwAAAAMAAAAcAA' +
- 'EAAAAAADwAAwABAAAAHAAEACAAAAAEAAQAAQAAAC7//wAAAC7////TAAEAAAAAAAABBgAA' +
- 'AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAA' +
- 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
- 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
- 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
- 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAA' +
- 'AAAAD/gwAyAAAAAQAAAAAAAAAAAAAAAAAAAAABAAQEAAEBAQJYAAEBASH4DwD4GwHEAvgc' +
- 'A/gXBIwMAYuL+nz5tQXkD5j3CBLnEQACAQEBIVhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWF' +
- 'hYWFhYWFhYAAABAQAADwACAQEEE/t3Dov6fAH6fAT+fPp8+nwHDosMCvm1Cvm1DAz6fBQA' +
- 'AAAAAAABAAAAAMmJbzEAAAAAzgTjFQAAAADOBOQpAAEAAAAAAAAADAAUAAQAAAABAAAAAg' +
- 'ABAAAAAAAAAAAD6AAAAAAAAA=='
- ));
- },
-
- addNativeFontFace: function fontLoader_addNativeFontFace(nativeFontFace) {
- this.nativeFontFaces.push(nativeFontFace);
- document.fonts.add(nativeFontFace);
- },
-
- bind: function fontLoaderBind(fonts, callback) {
- var rules = [];
- var fontsToLoad = [];
- var fontLoadPromises = [];
- var getNativeFontPromise = function(nativeFontFace) {
- // Return a promise that is always fulfilled, even when the font fails to
- // load.
- return nativeFontFace.loaded.catch(function(e) {
- warn('Failed to load font "' + nativeFontFace.family + '": ' + e);
- });
- };
- for (var i = 0, ii = fonts.length; i < ii; i++) {
- var font = fonts[i];
-
- // Add the font to the DOM only once or skip if the font
- // is already loaded.
- if (font.attached || font.loading === false) {
- continue;
- }
- font.attached = true;
-
- if (FontLoader.isFontLoadingAPISupported) {
- var nativeFontFace = font.createNativeFontFace();
- if (nativeFontFace) {
- this.addNativeFontFace(nativeFontFace);
- fontLoadPromises.push(getNativeFontPromise(nativeFontFace));
- }
- } else {
- var rule = font.createFontFaceRule();
- if (rule) {
- this.insertRule(rule);
- rules.push(rule);
- fontsToLoad.push(font);
- }
- }
- }
-
- var request = this.queueLoadingCallback(callback);
- if (FontLoader.isFontLoadingAPISupported) {
- Promise.all(fontLoadPromises).then(function() {
- request.complete();
- });
- } else if (rules.length > 0 && !FontLoader.isSyncFontLoadingSupported) {
- this.prepareFontLoadEvent(rules, fontsToLoad, request);
- } else {
- request.complete();
- }
- },
-
- queueLoadingCallback: function FontLoader_queueLoadingCallback(callback) {
- function LoadLoader_completeRequest() {
- assert(!request.end, 'completeRequest() cannot be called twice');
- request.end = Date.now();
-
- // sending all completed requests in order how they were queued
- while (context.requests.length > 0 && context.requests[0].end) {
- var otherRequest = context.requests.shift();
- setTimeout(otherRequest.callback, 0);
- }
- }
-
- var context = this.loadingContext;
- var requestId = 'pdfjs-font-loading-' + (context.nextRequestId++);
- var request = {
- id: requestId,
- complete: LoadLoader_completeRequest,
- callback: callback,
- started: Date.now()
- };
- context.requests.push(request);
- return request;
- },
-
- prepareFontLoadEvent: function fontLoaderPrepareFontLoadEvent(rules,
- fonts,
- request) {
- /** Hack begin */
- // There's currently no event when a font has finished downloading so the
- // following code is a dirty hack to 'guess' when a font is
- // ready. It's assumed fonts are loaded in order, so add a known test
- // font after the desired fonts and then test for the loading of that
- // test font.
-
- function int32(data, offset) {
- return (data.charCodeAt(offset) << 24) |
- (data.charCodeAt(offset + 1) << 16) |
- (data.charCodeAt(offset + 2) << 8) |
- (data.charCodeAt(offset + 3) & 0xff);
- }
-
- function spliceString(s, offset, remove, insert) {
- var chunk1 = s.substr(0, offset);
- var chunk2 = s.substr(offset + remove);
- return chunk1 + insert + chunk2;
- }
-
- var i, ii;
-
- var canvas = document.createElement('canvas');
- canvas.width = 1;
- canvas.height = 1;
- var ctx = canvas.getContext('2d');
-
- var called = 0;
- function isFontReady(name, callback) {
- called++;
- // With setTimeout clamping this gives the font ~100ms to load.
- if(called > 30) {
- warn('Load test font never loaded.');
- callback();
- return;
- }
- ctx.font = '30px ' + name;
- ctx.fillText('.', 0, 20);
- var imageData = ctx.getImageData(0, 0, 1, 1);
- if (imageData.data[3] > 0) {
- callback();
- return;
- }
- setTimeout(isFontReady.bind(null, name, callback));
- }
-
- var loadTestFontId = 'lt' + Date.now() + this.loadTestFontId++;
- // Chromium seems to cache fonts based on a hash of the actual font data,
- // so the font must be modified for each load test else it will appear to
- // be loaded already.
- // TODO: This could maybe be made faster by avoiding the btoa of the full
- // font by splitting it in chunks before hand and padding the font id.
- var data = this.loadTestFont;
- var COMMENT_OFFSET = 976; // has to be on 4 byte boundary (for checksum)
- data = spliceString(data, COMMENT_OFFSET, loadTestFontId.length,
- loadTestFontId);
- // CFF checksum is important for IE, adjusting it
- var CFF_CHECKSUM_OFFSET = 16;
- var XXXX_VALUE = 0x58585858; // the "comment" filled with 'X'
- var checksum = int32(data, CFF_CHECKSUM_OFFSET);
- for (i = 0, ii = loadTestFontId.length - 3; i < ii; i += 4) {
- checksum = (checksum - XXXX_VALUE + int32(loadTestFontId, i)) | 0;
- }
- if (i < loadTestFontId.length) { // align to 4 bytes boundary
- checksum = (checksum - XXXX_VALUE +
- int32(loadTestFontId + 'XXX', i)) | 0;
- }
- data = spliceString(data, CFF_CHECKSUM_OFFSET, 4, string32(checksum));
-
- var url = 'url(data:font/opentype;base64,' + btoa(data) + ');';
- var rule = '@font-face { font-family:"' + loadTestFontId + '";src:' +
- url + '}';
- this.insertRule(rule);
-
- var names = [];
- for (i = 0, ii = fonts.length; i < ii; i++) {
- names.push(fonts[i].loadedName);
- }
- names.push(loadTestFontId);
-
- var div = document.createElement('div');
- div.setAttribute('style',
- 'visibility: hidden;' +
- 'width: 10px; height: 10px;' +
- 'position: absolute; top: 0px; left: 0px;');
- for (i = 0, ii = names.length; i < ii; ++i) {
- var span = document.createElement('span');
- span.textContent = 'Hi';
- span.style.fontFamily = names[i];
- div.appendChild(span);
- }
- document.body.appendChild(div);
-
- isFontReady(loadTestFontId, function() {
- document.body.removeChild(div);
- request.complete();
- });
- /** Hack end */
- }
-};
-FontLoader.isFontLoadingAPISupported = typeof document !== 'undefined' &&
- !!document.fonts;
-Object.defineProperty(FontLoader, 'isSyncFontLoadingSupported', {
- get: function () {
- if (typeof navigator === 'undefined') {
- // node.js - we can pretend sync font loading is supported.
- return shadow(FontLoader, 'isSyncFontLoadingSupported', true);
- }
-
- var supported = false;
-
- // User agent string sniffing is bad, but there is no reliable way to tell
- // if font is fully loaded and ready to be used with canvas.
- var m = /Mozilla\/5.0.*?rv:(\d+).*? Gecko/.exec(navigator.userAgent);
- if (m && m[1] >= 14) {
- supported = true;
- }
- // TODO other browsers
- return shadow(FontLoader, 'isSyncFontLoadingSupported', supported);
- },
- enumerable: true,
- configurable: true
-});
-
-var IsEvalSupportedCached = {
- get value() {
- return shadow(this, 'value', sharedUtil.isEvalSupported());
- }
-};
-
-var FontFaceObject = (function FontFaceObjectClosure() {
- function FontFaceObject(translatedData, options) {
- this.compiledGlyphs = Object.create(null);
- // importing translated data
- for (var i in translatedData) {
- this[i] = translatedData[i];
- }
- this.options = options;
- }
- FontFaceObject.prototype = {
- createNativeFontFace: function FontFaceObject_createNativeFontFace() {
- if (!this.data) {
- return null;
- }
-
- if (this.options.disableFontFace) {
- this.disableFontFace = true;
- return null;
- }
-
- var nativeFontFace = new FontFace(this.loadedName, this.data, {});
-
- if (this.options.fontRegistry) {
- this.options.fontRegistry.registerFont(this);
- }
- return nativeFontFace;
- },
-
- createFontFaceRule: function FontFaceObject_createFontFaceRule() {
- if (!this.data) {
- return null;
- }
-
- if (this.options.disableFontFace) {
- this.disableFontFace = true;
- return null;
- }
-
- var data = bytesToString(new Uint8Array(this.data));
- var fontName = this.loadedName;
-
- // Add the font-face rule to the document
- var url = ('url(data:' + this.mimetype + ';base64,' + btoa(data) + ');');
- var rule = '@font-face { font-family:"' + fontName + '";src:' + url + '}';
-
- if (this.options.fontRegistry) {
- this.options.fontRegistry.registerFont(this, url);
- }
-
- return rule;
- },
-
- getPathGenerator:
- function FontFaceObject_getPathGenerator(objs, character) {
- if (!(character in this.compiledGlyphs)) {
- var cmds = objs.get(this.loadedName + '_path_' + character);
- var current, i, len;
-
- // If we can, compile cmds into JS for MAXIMUM SPEED
- if (this.options.isEvalSupported && IsEvalSupportedCached.value) {
- var args, js = '';
- for (i = 0, len = cmds.length; i < len; i++) {
- current = cmds[i];
-
- if (current.args !== undefined) {
- args = current.args.join(',');
- } else {
- args = '';
- }
-
- js += 'c.' + current.cmd + '(' + args + ');\n';
- }
- /* jshint -W054 */
- this.compiledGlyphs[character] = new Function('c', 'size', js);
- } else {
- // But fall back on using Function.prototype.apply() if we're
- // blocked from using eval() for whatever reason (like CSP policies)
- this.compiledGlyphs[character] = function(c, size) {
- for (i = 0, len = cmds.length; i < len; i++) {
- current = cmds[i];
-
- if (current.cmd === 'scale') {
- current.args = [size, -size];
- }
-
- c[current.cmd].apply(c, current.args);
- }
- };
- }
- }
- return this.compiledGlyphs[character];
- }
- };
- return FontFaceObject;
-})();
-
-exports.FontFaceObject = FontFaceObject;
-exports.FontLoader = FontLoader;
-}));
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsDisplayMetadata = {}), root.pdfjsSharedUtil);
- }
-}(this, function (exports, sharedUtil) {
-
-var error = sharedUtil.error;
-
- function fixMetadata(meta) {
- return meta.replace(/>\\376\\377([^<]+)/g, function(all, codes) {
- var bytes = codes.replace(/\\([0-3])([0-7])([0-7])/g,
- function(code, d1, d2, d3) {
- return String.fromCharCode(d1 * 64 + d2 * 8 + d3 * 1);
- });
- var chars = '';
- for (var i = 0; i < bytes.length; i += 2) {
- var code = bytes.charCodeAt(i) * 256 + bytes.charCodeAt(i + 1);
- chars += code >= 32 && code < 127 && code !== 60 && code !== 62 &&
- code !== 38 && false ? String.fromCharCode(code) :
- '&#x' + (0x10000 + code).toString(16).substring(1) + ';';
- }
- return '>' + chars;
- });
- }
-
- function Metadata(meta) {
- if (typeof meta === 'string') {
- // Ghostscript produces invalid metadata
- meta = fixMetadata(meta);
-
- var parser = new DOMParser();
- meta = parser.parseFromString(meta, 'application/xml');
- } else if (!(meta instanceof Document)) {
- error('Metadata: Invalid metadata object');
- }
-
- this.metaDocument = meta;
- this.metadata = Object.create(null);
- this.parse();
- }
-
- Metadata.prototype = {
- parse: function Metadata_parse() {
- var doc = this.metaDocument;
- var rdf = doc.documentElement;
-
- if (rdf.nodeName.toLowerCase() !== 'rdf:rdf') { // Wrapped in <xmpmeta>
- rdf = rdf.firstChild;
- while (rdf && rdf.nodeName.toLowerCase() !== 'rdf:rdf') {
- rdf = rdf.nextSibling;
- }
- }
-
- var nodeName = (rdf) ? rdf.nodeName.toLowerCase() : null;
- if (!rdf || nodeName !== 'rdf:rdf' || !rdf.hasChildNodes()) {
- return;
- }
-
- var children = rdf.childNodes, desc, entry, name, i, ii, length, iLength;
- for (i = 0, length = children.length; i < length; i++) {
- desc = children[i];
- if (desc.nodeName.toLowerCase() !== 'rdf:description') {
- continue;
- }
-
- for (ii = 0, iLength = desc.childNodes.length; ii < iLength; ii++) {
- if (desc.childNodes[ii].nodeName.toLowerCase() !== '#text') {
- entry = desc.childNodes[ii];
- name = entry.nodeName.toLowerCase();
- this.metadata[name] = entry.textContent.trim();
- }
- }
- }
- },
-
- get: function Metadata_get(name) {
- return this.metadata[name] || null;
- },
-
- has: function Metadata_has(name) {
- return typeof this.metadata[name] !== 'undefined';
- }
- };
-
-exports.Metadata = Metadata;
-}));
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsDisplaySVG = {}), root.pdfjsSharedUtil);
- }
-}(this, function (exports, sharedUtil) {
-var FONT_IDENTITY_MATRIX = sharedUtil.FONT_IDENTITY_MATRIX;
-var IDENTITY_MATRIX = sharedUtil.IDENTITY_MATRIX;
-var ImageKind = sharedUtil.ImageKind;
-var OPS = sharedUtil.OPS;
-var Util = sharedUtil.Util;
-var isNum = sharedUtil.isNum;
-var isArray = sharedUtil.isArray;
-var warn = sharedUtil.warn;
-var createObjectURL = sharedUtil.createObjectURL;
-
-var SVG_DEFAULTS = {
- fontStyle: 'normal',
- fontWeight: 'normal',
- fillColor: '#000000'
-};
-
-var convertImgDataToPng = (function convertImgDataToPngClosure() {
- var PNG_HEADER =
- new Uint8Array([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]);
-
- var CHUNK_WRAPPER_SIZE = 12;
-
- var crcTable = new Int32Array(256);
- for (var i = 0; i < 256; i++) {
- var c = i;
- for (var h = 0; h < 8; h++) {
- if (c & 1) {
- c = 0xedB88320 ^ ((c >> 1) & 0x7fffffff);
- } else {
- c = (c >> 1) & 0x7fffffff;
- }
- }
- crcTable[i] = c;
- }
-
- function crc32(data, start, end) {
- var crc = -1;
- for (var i = start; i < end; i++) {
- var a = (crc ^ data[i]) & 0xff;
- var b = crcTable[a];
- crc = (crc >>> 8) ^ b;
- }
- return crc ^ -1;
- }
-
- function writePngChunk(type, body, data, offset) {
- var p = offset;
- var len = body.length;
-
- data[p] = len >> 24 & 0xff;
- data[p + 1] = len >> 16 & 0xff;
- data[p + 2] = len >> 8 & 0xff;
- data[p + 3] = len & 0xff;
- p += 4;
-
- data[p] = type.charCodeAt(0) & 0xff;
- data[p + 1] = type.charCodeAt(1) & 0xff;
- data[p + 2] = type.charCodeAt(2) & 0xff;
- data[p + 3] = type.charCodeAt(3) & 0xff;
- p += 4;
-
- data.set(body, p);
- p += body.length;
-
- var crc = crc32(data, offset + 4, p);
-
- data[p] = crc >> 24 & 0xff;
- data[p + 1] = crc >> 16 & 0xff;
- data[p + 2] = crc >> 8 & 0xff;
- data[p + 3] = crc & 0xff;
- }
-
- function adler32(data, start, end) {
- var a = 1;
- var b = 0;
- for (var i = start; i < end; ++i) {
- a = (a + (data[i] & 0xff)) % 65521;
- b = (b + a) % 65521;
- }
- return (b << 16) | a;
- }
-
- function encode(imgData, kind, forceDataSchema) {
- var width = imgData.width;
- var height = imgData.height;
- var bitDepth, colorType, lineSize;
- var bytes = imgData.data;
-
- switch (kind) {
- case ImageKind.GRAYSCALE_1BPP:
- colorType = 0;
- bitDepth = 1;
- lineSize = (width + 7) >> 3;
- break;
- case ImageKind.RGB_24BPP:
- colorType = 2;
- bitDepth = 8;
- lineSize = width * 3;
- break;
- case ImageKind.RGBA_32BPP:
- colorType = 6;
- bitDepth = 8;
- lineSize = width * 4;
- break;
- default:
- throw new Error('invalid format');
- }
-
- // prefix every row with predictor 0
- var literals = new Uint8Array((1 + lineSize) * height);
- var offsetLiterals = 0, offsetBytes = 0;
- var y, i;
- for (y = 0; y < height; ++y) {
- literals[offsetLiterals++] = 0; // no prediction
- literals.set(bytes.subarray(offsetBytes, offsetBytes + lineSize),
- offsetLiterals);
- offsetBytes += lineSize;
- offsetLiterals += lineSize;
- }
-
- if (kind === ImageKind.GRAYSCALE_1BPP) {
- // inverting for B/W
- offsetLiterals = 0;
- for (y = 0; y < height; y++) {
- offsetLiterals++; // skipping predictor
- for (i = 0; i < lineSize; i++) {
- literals[offsetLiterals++] ^= 0xFF;
- }
- }
- }
-
- var ihdr = new Uint8Array([
- width >> 24 & 0xff,
- width >> 16 & 0xff,
- width >> 8 & 0xff,
- width & 0xff,
- height >> 24 & 0xff,
- height >> 16 & 0xff,
- height >> 8 & 0xff,
- height & 0xff,
- bitDepth, // bit depth
- colorType, // color type
- 0x00, // compression method
- 0x00, // filter method
- 0x00 // interlace method
- ]);
-
- var len = literals.length;
- var maxBlockLength = 0xFFFF;
-
- var deflateBlocks = Math.ceil(len / maxBlockLength);
- var idat = new Uint8Array(2 + len + deflateBlocks * 5 + 4);
- var pi = 0;
- idat[pi++] = 0x78; // compression method and flags
- idat[pi++] = 0x9c; // flags
-
- var pos = 0;
- while (len > maxBlockLength) {
- // writing non-final DEFLATE blocks type 0 and length of 65535
- idat[pi++] = 0x00;
- idat[pi++] = 0xff;
- idat[pi++] = 0xff;
- idat[pi++] = 0x00;
- idat[pi++] = 0x00;
- idat.set(literals.subarray(pos, pos + maxBlockLength), pi);
- pi += maxBlockLength;
- pos += maxBlockLength;
- len -= maxBlockLength;
- }
-
- // writing non-final DEFLATE blocks type 0
- idat[pi++] = 0x01;
- idat[pi++] = len & 0xff;
- idat[pi++] = len >> 8 & 0xff;
- idat[pi++] = (~len & 0xffff) & 0xff;
- idat[pi++] = (~len & 0xffff) >> 8 & 0xff;
- idat.set(literals.subarray(pos), pi);
- pi += literals.length - pos;
-
- var adler = adler32(literals, 0, literals.length); // checksum
- idat[pi++] = adler >> 24 & 0xff;
- idat[pi++] = adler >> 16 & 0xff;
- idat[pi++] = adler >> 8 & 0xff;
- idat[pi++] = adler & 0xff;
-
- // PNG will consists: header, IHDR+data, IDAT+data, and IEND.
- var pngLength = PNG_HEADER.length + (CHUNK_WRAPPER_SIZE * 3) +
- ihdr.length + idat.length;
- var data = new Uint8Array(pngLength);
- var offset = 0;
- data.set(PNG_HEADER, offset);
- offset += PNG_HEADER.length;
- writePngChunk('IHDR', ihdr, data, offset);
- offset += CHUNK_WRAPPER_SIZE + ihdr.length;
- writePngChunk('IDATA', idat, data, offset);
- offset += CHUNK_WRAPPER_SIZE + idat.length;
- writePngChunk('IEND', new Uint8Array(0), data, offset);
-
- return createObjectURL(data, 'image/png', forceDataSchema);
- }
-
- return function convertImgDataToPng(imgData, forceDataSchema) {
- var kind = (imgData.kind === undefined ?
- ImageKind.GRAYSCALE_1BPP : imgData.kind);
- return encode(imgData, kind, forceDataSchema);
- };
-})();
-
-var SVGExtraState = (function SVGExtraStateClosure() {
- function SVGExtraState() {
- this.fontSizeScale = 1;
- this.fontWeight = SVG_DEFAULTS.fontWeight;
- this.fontSize = 0;
-
- this.textMatrix = IDENTITY_MATRIX;
- this.fontMatrix = FONT_IDENTITY_MATRIX;
- this.leading = 0;
-
- // Current point (in user coordinates)
- this.x = 0;
- this.y = 0;
-
- // Start of text line (in text coordinates)
- this.lineX = 0;
- this.lineY = 0;
-
- // Character and word spacing
- this.charSpacing = 0;
- this.wordSpacing = 0;
- this.textHScale = 1;
- this.textRise = 0;
-
- // Default foreground and background colors
- this.fillColor = SVG_DEFAULTS.fillColor;
- this.strokeColor = '#000000';
-
- this.fillAlpha = 1;
- this.strokeAlpha = 1;
- this.lineWidth = 1;
- this.lineJoin = '';
- this.lineCap = '';
- this.miterLimit = 0;
-
- this.dashArray = [];
- this.dashPhase = 0;
-
- this.dependencies = [];
-
- // Clipping
- this.clipId = '';
- this.pendingClip = false;
-
- this.maskId = '';
- }
-
- SVGExtraState.prototype = {
- clone: function SVGExtraState_clone() {
- return Object.create(this);
- },
- setCurrentPoint: function SVGExtraState_setCurrentPoint(x, y) {
- this.x = x;
- this.y = y;
- }
- };
- return SVGExtraState;
-})();
-
-var SVGGraphics = (function SVGGraphicsClosure() {
- function createScratchSVG(width, height) {
- var NS = 'http://www.w3.org/2000/svg';
- var svg = document.createElementNS(NS, 'svg:svg');
- svg.setAttributeNS(null, 'version', '1.1');
- svg.setAttributeNS(null, 'width', width + 'px');
- svg.setAttributeNS(null, 'height', height + 'px');
- svg.setAttributeNS(null, 'viewBox', '0 0 ' + width + ' ' + height);
- return svg;
- }
-
- function opListToTree(opList) {
- var opTree = [];
- var tmp = [];
- var opListLen = opList.length;
-
- for (var x = 0; x < opListLen; x++) {
- if (opList[x].fn === 'save') {
- opTree.push({'fnId': 92, 'fn': 'group', 'items': []});
- tmp.push(opTree);
- opTree = opTree[opTree.length - 1].items;
- continue;
- }
-
- if(opList[x].fn === 'restore') {
- opTree = tmp.pop();
- } else {
- opTree.push(opList[x]);
- }
- }
- return opTree;
- }
-
- /**
- * Formats float number.
- * @param value {number} number to format.
- * @returns {string}
- */
- function pf(value) {
- if (value === (value | 0)) { // integer number
- return value.toString();
- }
- var s = value.toFixed(10);
- var i = s.length - 1;
- if (s[i] !== '0') {
- return s;
- }
- // removing trailing zeros
- do {
- i--;
- } while (s[i] === '0');
- return s.substr(0, s[i] === '.' ? i : i + 1);
- }
-
- /**
- * Formats transform matrix. The standard rotation, scale and translate
- * matrices are replaced by their shorter forms, and for identity matrix
- * returns empty string to save the memory.
- * @param m {Array} matrix to format.
- * @returns {string}
- */
- function pm(m) {
- if (m[4] === 0 && m[5] === 0) {
- if (m[1] === 0 && m[2] === 0) {
- if (m[0] === 1 && m[3] === 1) {
- return '';
- }
- return 'scale(' + pf(m[0]) + ' ' + pf(m[3]) + ')';
- }
- if (m[0] === m[3] && m[1] === -m[2]) {
- var a = Math.acos(m[0]) * 180 / Math.PI;
- return 'rotate(' + pf(a) + ')';
- }
- } else {
- if (m[0] === 1 && m[1] === 0 && m[2] === 0 && m[3] === 1) {
- return 'translate(' + pf(m[4]) + ' ' + pf(m[5]) + ')';
- }
- }
- return 'matrix(' + pf(m[0]) + ' ' + pf(m[1]) + ' ' + pf(m[2]) + ' ' +
- pf(m[3]) + ' ' + pf(m[4]) + ' ' + pf(m[5]) + ')';
- }
-
- function SVGGraphics(commonObjs, objs, forceDataSchema) {
- this.current = new SVGExtraState();
- this.transformMatrix = IDENTITY_MATRIX; // Graphics state matrix
- this.transformStack = [];
- this.extraStack = [];
- this.commonObjs = commonObjs;
- this.objs = objs;
- this.pendingEOFill = false;
-
- this.embedFonts = false;
- this.embeddedFonts = Object.create(null);
- this.cssStyle = null;
- this.forceDataSchema = !!forceDataSchema;
- }
-
- var NS = 'http://www.w3.org/2000/svg';
- var XML_NS = 'http://www.w3.org/XML/1998/namespace';
- var XLINK_NS = 'http://www.w3.org/1999/xlink';
- var LINE_CAP_STYLES = ['butt', 'round', 'square'];
- var LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];
- var clipCount = 0;
- var maskCount = 0;
-
- SVGGraphics.prototype = {
- save: function SVGGraphics_save() {
- this.transformStack.push(this.transformMatrix);
- var old = this.current;
- this.extraStack.push(old);
- this.current = old.clone();
- },
-
- restore: function SVGGraphics_restore() {
- this.transformMatrix = this.transformStack.pop();
- this.current = this.extraStack.pop();
-
- this.tgrp = document.createElementNS(NS, 'svg:g');
- this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
- this.pgrp.appendChild(this.tgrp);
- },
-
- group: function SVGGraphics_group(items) {
- this.save();
- this.executeOpTree(items);
- this.restore();
- },
-
- loadDependencies: function SVGGraphics_loadDependencies(operatorList) {
- var fnArray = operatorList.fnArray;
- var fnArrayLen = fnArray.length;
- var argsArray = operatorList.argsArray;
-
- var self = this;
- for (var i = 0; i < fnArrayLen; i++) {
- if (OPS.dependency === fnArray[i]) {
- var deps = argsArray[i];
- for (var n = 0, nn = deps.length; n < nn; n++) {
- var obj = deps[n];
- var common = obj.substring(0, 2) === 'g_';
- var promise;
- if (common) {
- promise = new Promise(function(resolve) {
- self.commonObjs.get(obj, resolve);
- });
- } else {
- promise = new Promise(function(resolve) {
- self.objs.get(obj, resolve);
- });
- }
- this.current.dependencies.push(promise);
- }
- }
- }
- return Promise.all(this.current.dependencies);
- },
-
- transform: function SVGGraphics_transform(a, b, c, d, e, f) {
- var transformMatrix = [a, b, c, d, e, f];
- this.transformMatrix = Util.transform(this.transformMatrix,
- transformMatrix);
-
- this.tgrp = document.createElementNS(NS, 'svg:g');
- this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
- },
-
- getSVG: function SVGGraphics_getSVG(operatorList, viewport) {
- this.svg = createScratchSVG(viewport.width, viewport.height);
- this.viewport = viewport;
-
- return this.loadDependencies(operatorList).then(function () {
- this.transformMatrix = IDENTITY_MATRIX;
- this.pgrp = document.createElementNS(NS, 'svg:g'); // Parent group
- this.pgrp.setAttributeNS(null, 'transform', pm(viewport.transform));
- this.tgrp = document.createElementNS(NS, 'svg:g'); // Transform group
- this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
- this.defs = document.createElementNS(NS, 'svg:defs');
- this.pgrp.appendChild(this.defs);
- this.pgrp.appendChild(this.tgrp);
- this.svg.appendChild(this.pgrp);
- var opTree = this.convertOpList(operatorList);
- this.executeOpTree(opTree);
- return this.svg;
- }.bind(this));
- },
-
- convertOpList: function SVGGraphics_convertOpList(operatorList) {
- var argsArray = operatorList.argsArray;
- var fnArray = operatorList.fnArray;
- var fnArrayLen = fnArray.length;
- var REVOPS = [];
- var opList = [];
-
- for (var op in OPS) {
- REVOPS[OPS[op]] = op;
- }
-
- for (var x = 0; x < fnArrayLen; x++) {
- var fnId = fnArray[x];
- opList.push({'fnId' : fnId, 'fn': REVOPS[fnId], 'args': argsArray[x]});
- }
- return opListToTree(opList);
- },
-
- executeOpTree: function SVGGraphics_executeOpTree(opTree) {
- var opTreeLen = opTree.length;
- for(var x = 0; x < opTreeLen; x++) {
- var fn = opTree[x].fn;
- var fnId = opTree[x].fnId;
- var args = opTree[x].args;
-
- switch (fnId | 0) {
- case OPS.beginText:
- this.beginText();
- break;
- case OPS.setLeading:
- this.setLeading(args);
- break;
- case OPS.setLeadingMoveText:
- this.setLeadingMoveText(args[0], args[1]);
- break;
- case OPS.setFont:
- this.setFont(args);
- break;
- case OPS.showText:
- this.showText(args[0]);
- break;
- case OPS.showSpacedText:
- this.showText(args[0]);
- break;
- case OPS.endText:
- this.endText();
- break;
- case OPS.moveText:
- this.moveText(args[0], args[1]);
- break;
- case OPS.setCharSpacing:
- this.setCharSpacing(args[0]);
- break;
- case OPS.setWordSpacing:
- this.setWordSpacing(args[0]);
- break;
- case OPS.setHScale:
- this.setHScale(args[0]);
- break;
- case OPS.setTextMatrix:
- this.setTextMatrix(args[0], args[1], args[2],
- args[3], args[4], args[5]);
- break;
- case OPS.setLineWidth:
- this.setLineWidth(args[0]);
- break;
- case OPS.setLineJoin:
- this.setLineJoin(args[0]);
- break;
- case OPS.setLineCap:
- this.setLineCap(args[0]);
- break;
- case OPS.setMiterLimit:
- this.setMiterLimit(args[0]);
- break;
- case OPS.setFillRGBColor:
- this.setFillRGBColor(args[0], args[1], args[2]);
- break;
- case OPS.setStrokeRGBColor:
- this.setStrokeRGBColor(args[0], args[1], args[2]);
- break;
- case OPS.setDash:
- this.setDash(args[0], args[1]);
- break;
- case OPS.setGState:
- this.setGState(args[0]);
- break;
- case OPS.fill:
- this.fill();
- break;
- case OPS.eoFill:
- this.eoFill();
- break;
- case OPS.stroke:
- this.stroke();
- break;
- case OPS.fillStroke:
- this.fillStroke();
- break;
- case OPS.eoFillStroke:
- this.eoFillStroke();
- break;
- case OPS.clip:
- this.clip('nonzero');
- break;
- case OPS.eoClip:
- this.clip('evenodd');
- break;
- case OPS.paintSolidColorImageMask:
- this.paintSolidColorImageMask();
- break;
- case OPS.paintJpegXObject:
- this.paintJpegXObject(args[0], args[1], args[2]);
- break;
- case OPS.paintImageXObject:
- this.paintImageXObject(args[0]);
- break;
- case OPS.paintInlineImageXObject:
- this.paintInlineImageXObject(args[0]);
- break;
- case OPS.paintImageMaskXObject:
- this.paintImageMaskXObject(args[0]);
- break;
- case OPS.paintFormXObjectBegin:
- this.paintFormXObjectBegin(args[0], args[1]);
- break;
- case OPS.paintFormXObjectEnd:
- this.paintFormXObjectEnd();
- break;
- case OPS.closePath:
- this.closePath();
- break;
- case OPS.closeStroke:
- this.closeStroke();
- break;
- case OPS.closeFillStroke:
- this.closeFillStroke();
- break;
- case OPS.nextLine:
- this.nextLine();
- break;
- case OPS.transform:
- this.transform(args[0], args[1], args[2], args[3],
- args[4], args[5]);
- break;
- case OPS.constructPath:
- this.constructPath(args[0], args[1]);
- break;
- case OPS.endPath:
- this.endPath();
- break;
- case 92:
- this.group(opTree[x].items);
- break;
- default:
- warn('Unimplemented method '+ fn);
- break;
- }
- }
- },
-
- setWordSpacing: function SVGGraphics_setWordSpacing(wordSpacing) {
- this.current.wordSpacing = wordSpacing;
- },
-
- setCharSpacing: function SVGGraphics_setCharSpacing(charSpacing) {
- this.current.charSpacing = charSpacing;
- },
-
- nextLine: function SVGGraphics_nextLine() {
- this.moveText(0, this.current.leading);
- },
-
- setTextMatrix: function SVGGraphics_setTextMatrix(a, b, c, d, e, f) {
- var current = this.current;
- this.current.textMatrix = this.current.lineMatrix = [a, b, c, d, e, f];
-
- this.current.x = this.current.lineX = 0;
- this.current.y = this.current.lineY = 0;
-
- current.xcoords = [];
- current.tspan = document.createElementNS(NS, 'svg:tspan');
- current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
- current.tspan.setAttributeNS(null, 'font-size',
- pf(current.fontSize) + 'px');
- current.tspan.setAttributeNS(null, 'y', pf(-current.y));
-
- current.txtElement = document.createElementNS(NS, 'svg:text');
- current.txtElement.appendChild(current.tspan);
- },
-
- beginText: function SVGGraphics_beginText() {
- this.current.x = this.current.lineX = 0;
- this.current.y = this.current.lineY = 0;
- this.current.textMatrix = IDENTITY_MATRIX;
- this.current.lineMatrix = IDENTITY_MATRIX;
- this.current.tspan = document.createElementNS(NS, 'svg:tspan');
- this.current.txtElement = document.createElementNS(NS, 'svg:text');
- this.current.txtgrp = document.createElementNS(NS, 'svg:g');
- this.current.xcoords = [];
- },
-
- moveText: function SVGGraphics_moveText(x, y) {
- var current = this.current;
- this.current.x = this.current.lineX += x;
- this.current.y = this.current.lineY += y;
-
- current.xcoords = [];
- current.tspan = document.createElementNS(NS, 'svg:tspan');
- current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
- current.tspan.setAttributeNS(null, 'font-size',
- pf(current.fontSize) + 'px');
- current.tspan.setAttributeNS(null, 'y', pf(-current.y));
- },
-
- showText: function SVGGraphics_showText(glyphs) {
- var current = this.current;
- var font = current.font;
- var fontSize = current.fontSize;
-
- if (fontSize === 0) {
- return;
- }
-
- var charSpacing = current.charSpacing;
- var wordSpacing = current.wordSpacing;
- var fontDirection = current.fontDirection;
- var textHScale = current.textHScale * fontDirection;
- var glyphsLength = glyphs.length;
- var vertical = font.vertical;
- var widthAdvanceScale = fontSize * current.fontMatrix[0];
-
- var x = 0, i;
- for (i = 0; i < glyphsLength; ++i) {
- var glyph = glyphs[i];
- if (glyph === null) {
- // word break
- x += fontDirection * wordSpacing;
- continue;
- } else if (isNum(glyph)) {
- x += -glyph * fontSize * 0.001;
- continue;
- }
- current.xcoords.push(current.x + x * textHScale);
-
- var width = glyph.width;
- var character = glyph.fontChar;
- var charWidth = width * widthAdvanceScale + charSpacing * fontDirection;
- x += charWidth;
-
- current.tspan.textContent += character;
- }
- if (vertical) {
- current.y -= x * textHScale;
- } else {
- current.x += x * textHScale;
- }
-
- current.tspan.setAttributeNS(null, 'x',
- current.xcoords.map(pf).join(' '));
- current.tspan.setAttributeNS(null, 'y', pf(-current.y));
- current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
- current.tspan.setAttributeNS(null, 'font-size',
- pf(current.fontSize) + 'px');
- if (current.fontStyle !== SVG_DEFAULTS.fontStyle) {
- current.tspan.setAttributeNS(null, 'font-style', current.fontStyle);
- }
- if (current.fontWeight !== SVG_DEFAULTS.fontWeight) {
- current.tspan.setAttributeNS(null, 'font-weight', current.fontWeight);
- }
- if (current.fillColor !== SVG_DEFAULTS.fillColor) {
- current.tspan.setAttributeNS(null, 'fill', current.fillColor);
- }
-
- current.txtElement.setAttributeNS(null, 'transform',
- pm(current.textMatrix) +
- ' scale(1, -1)' );
- current.txtElement.setAttributeNS(XML_NS, 'xml:space', 'preserve');
- current.txtElement.appendChild(current.tspan);
- current.txtgrp.appendChild(current.txtElement);
-
- this.tgrp.appendChild(current.txtElement);
-
- },
-
- setLeadingMoveText: function SVGGraphics_setLeadingMoveText(x, y) {
- this.setLeading(-y);
- this.moveText(x, y);
- },
-
- addFontStyle: function SVGGraphics_addFontStyle(fontObj) {
- if (!this.cssStyle) {
- this.cssStyle = document.createElementNS(NS, 'svg:style');
- this.cssStyle.setAttributeNS(null, 'type', 'text/css');
- this.defs.appendChild(this.cssStyle);
- }
-
- var url = createObjectURL(fontObj.data, fontObj.mimetype,
- this.forceDataSchema);
- this.cssStyle.textContent +=
- '@font-face { font-family: "' + fontObj.loadedName + '";' +
- ' src: url(' + url + '); }\n';
- },
-
- setFont: function SVGGraphics_setFont(details) {
- var current = this.current;
- var fontObj = this.commonObjs.get(details[0]);
- var size = details[1];
- this.current.font = fontObj;
-
- if (this.embedFonts && fontObj.data &&
- !this.embeddedFonts[fontObj.loadedName]) {
- this.addFontStyle(fontObj);
- this.embeddedFonts[fontObj.loadedName] = fontObj;
- }
-
- current.fontMatrix = (fontObj.fontMatrix ?
- fontObj.fontMatrix : FONT_IDENTITY_MATRIX);
-
- var bold = fontObj.black ? (fontObj.bold ? 'bolder' : 'bold') :
- (fontObj.bold ? 'bold' : 'normal');
- var italic = fontObj.italic ? 'italic' : 'normal';
-
- if (size < 0) {
- size = -size;
- current.fontDirection = -1;
- } else {
- current.fontDirection = 1;
- }
- current.fontSize = size;
- current.fontFamily = fontObj.loadedName;
- current.fontWeight = bold;
- current.fontStyle = italic;
-
- current.tspan = document.createElementNS(NS, 'svg:tspan');
- current.tspan.setAttributeNS(null, 'y', pf(-current.y));
- current.xcoords = [];
- },
-
- endText: function SVGGraphics_endText() {
- if (this.current.pendingClip) {
- this.cgrp.appendChild(this.tgrp);
- this.pgrp.appendChild(this.cgrp);
- } else {
- this.pgrp.appendChild(this.tgrp);
- }
- this.tgrp = document.createElementNS(NS, 'svg:g');
- this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
- },
-
- // Path properties
- setLineWidth: function SVGGraphics_setLineWidth(width) {
- this.current.lineWidth = width;
- },
- setLineCap: function SVGGraphics_setLineCap(style) {
- this.current.lineCap = LINE_CAP_STYLES[style];
- },
- setLineJoin: function SVGGraphics_setLineJoin(style) {
- this.current.lineJoin = LINE_JOIN_STYLES[style];
- },
- setMiterLimit: function SVGGraphics_setMiterLimit(limit) {
- this.current.miterLimit = limit;
- },
- setStrokeRGBColor: function SVGGraphics_setStrokeRGBColor(r, g, b) {
- var color = Util.makeCssRgb(r, g, b);
- this.current.strokeColor = color;
- },
- setFillRGBColor: function SVGGraphics_setFillRGBColor(r, g, b) {
- var color = Util.makeCssRgb(r, g, b);
- this.current.fillColor = color;
- this.current.tspan = document.createElementNS(NS, 'svg:tspan');
- this.current.xcoords = [];
- },
- setDash: function SVGGraphics_setDash(dashArray, dashPhase) {
- this.current.dashArray = dashArray;
- this.current.dashPhase = dashPhase;
- },
-
- constructPath: function SVGGraphics_constructPath(ops, args) {
- var current = this.current;
- var x = current.x, y = current.y;
- current.path = document.createElementNS(NS, 'svg:path');
- var d = [];
- var opLength = ops.length;
-
- for (var i = 0, j = 0; i < opLength; i++) {
- switch (ops[i] | 0) {
- case OPS.rectangle:
- x = args[j++];
- y = args[j++];
- var width = args[j++];
- var height = args[j++];
- var xw = x + width;
- var yh = y + height;
- d.push('M', pf(x), pf(y), 'L', pf(xw) , pf(y), 'L', pf(xw), pf(yh),
- 'L', pf(x), pf(yh), 'Z');
- break;
- case OPS.moveTo:
- x = args[j++];
- y = args[j++];
- d.push('M', pf(x), pf(y));
- break;
- case OPS.lineTo:
- x = args[j++];
- y = args[j++];
- d.push('L', pf(x) , pf(y));
- break;
- case OPS.curveTo:
- x = args[j + 4];
- y = args[j + 5];
- d.push('C', pf(args[j]), pf(args[j + 1]), pf(args[j + 2]),
- pf(args[j + 3]), pf(x), pf(y));
- j += 6;
- break;
- case OPS.curveTo2:
- x = args[j + 2];
- y = args[j + 3];
- d.push('C', pf(x), pf(y), pf(args[j]), pf(args[j + 1]),
- pf(args[j + 2]), pf(args[j + 3]));
- j += 4;
- break;
- case OPS.curveTo3:
- x = args[j + 2];
- y = args[j + 3];
- d.push('C', pf(args[j]), pf(args[j + 1]), pf(x), pf(y),
- pf(x), pf(y));
- j += 4;
- break;
- case OPS.closePath:
- d.push('Z');
- break;
- }
- }
- current.path.setAttributeNS(null, 'd', d.join(' '));
- current.path.setAttributeNS(null, 'stroke-miterlimit',
- pf(current.miterLimit));
- current.path.setAttributeNS(null, 'stroke-linecap', current.lineCap);
- current.path.setAttributeNS(null, 'stroke-linejoin', current.lineJoin);
- current.path.setAttributeNS(null, 'stroke-width',
- pf(current.lineWidth) + 'px');
- current.path.setAttributeNS(null, 'stroke-dasharray',
- current.dashArray.map(pf).join(' '));
- current.path.setAttributeNS(null, 'stroke-dashoffset',
- pf(current.dashPhase) + 'px');
- current.path.setAttributeNS(null, 'fill', 'none');
-
- this.tgrp.appendChild(current.path);
- if (current.pendingClip) {
- this.cgrp.appendChild(this.tgrp);
- this.pgrp.appendChild(this.cgrp);
- } else {
- this.pgrp.appendChild(this.tgrp);
- }
- // Saving a reference in current.element so that it can be addressed
- // in 'fill' and 'stroke'
- current.element = current.path;
- current.setCurrentPoint(x, y);
- },
-
- endPath: function SVGGraphics_endPath() {
- var current = this.current;
- if (current.pendingClip) {
- this.cgrp.appendChild(this.tgrp);
- this.pgrp.appendChild(this.cgrp);
- } else {
- this.pgrp.appendChild(this.tgrp);
- }
- this.tgrp = document.createElementNS(NS, 'svg:g');
- this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
- },
-
- clip: function SVGGraphics_clip(type) {
- var current = this.current;
- // Add current path to clipping path
- current.clipId = 'clippath' + clipCount;
- clipCount++;
- this.clippath = document.createElementNS(NS, 'svg:clipPath');
- this.clippath.setAttributeNS(null, 'id', current.clipId);
- var clipElement = current.element.cloneNode();
- if (type === 'evenodd') {
- clipElement.setAttributeNS(null, 'clip-rule', 'evenodd');
- } else {
- clipElement.setAttributeNS(null, 'clip-rule', 'nonzero');
- }
- this.clippath.setAttributeNS(null, 'transform', pm(this.transformMatrix));
- this.clippath.appendChild(clipElement);
- this.defs.appendChild(this.clippath);
-
- // Create a new group with that attribute
- current.pendingClip = true;
- this.cgrp = document.createElementNS(NS, 'svg:g');
- this.cgrp.setAttributeNS(null, 'clip-path',
- 'url(#' + current.clipId + ')');
- this.pgrp.appendChild(this.cgrp);
- },
-
- closePath: function SVGGraphics_closePath() {
- var current = this.current;
- var d = current.path.getAttributeNS(null, 'd');
- d += 'Z';
- current.path.setAttributeNS(null, 'd', d);
- },
-
- setLeading: function SVGGraphics_setLeading(leading) {
- this.current.leading = -leading;
- },
-
- setTextRise: function SVGGraphics_setTextRise(textRise) {
- this.current.textRise = textRise;
- },
-
- setHScale: function SVGGraphics_setHScale(scale) {
- this.current.textHScale = scale / 100;
- },
-
- setGState: function SVGGraphics_setGState(states) {
- for (var i = 0, ii = states.length; i < ii; i++) {
- var state = states[i];
- var key = state[0];
- var value = state[1];
-
- switch (key) {
- case 'LW':
- this.setLineWidth(value);
- break;
- case 'LC':
- this.setLineCap(value);
- break;
- case 'LJ':
- this.setLineJoin(value);
- break;
- case 'ML':
- this.setMiterLimit(value);
- break;
- case 'D':
- this.setDash(value[0], value[1]);
- break;
- case 'RI':
- break;
- case 'FL':
- break;
- case 'Font':
- this.setFont(value);
- break;
- case 'CA':
- break;
- case 'ca':
- break;
- case 'BM':
- break;
- case 'SMask':
- break;
- }
- }
- },
-
- fill: function SVGGraphics_fill() {
- var current = this.current;
- current.element.setAttributeNS(null, 'fill', current.fillColor);
- },
-
- stroke: function SVGGraphics_stroke() {
- var current = this.current;
- current.element.setAttributeNS(null, 'stroke', current.strokeColor);
- current.element.setAttributeNS(null, 'fill', 'none');
- },
-
- eoFill: function SVGGraphics_eoFill() {
- var current = this.current;
- current.element.setAttributeNS(null, 'fill', current.fillColor);
- current.element.setAttributeNS(null, 'fill-rule', 'evenodd');
- },
-
- fillStroke: function SVGGraphics_fillStroke() {
- // Order is important since stroke wants fill to be none.
- // First stroke, then if fill needed, it will be overwritten.
- this.stroke();
- this.fill();
- },
-
- eoFillStroke: function SVGGraphics_eoFillStroke() {
- this.current.element.setAttributeNS(null, 'fill-rule', 'evenodd');
- this.fillStroke();
- },
-
- closeStroke: function SVGGraphics_closeStroke() {
- this.closePath();
- this.stroke();
- },
-
- closeFillStroke: function SVGGraphics_closeFillStroke() {
- this.closePath();
- this.fillStroke();
- },
-
- paintSolidColorImageMask:
- function SVGGraphics_paintSolidColorImageMask() {
- var current = this.current;
- var rect = document.createElementNS(NS, 'svg:rect');
- rect.setAttributeNS(null, 'x', '0');
- rect.setAttributeNS(null, 'y', '0');
- rect.setAttributeNS(null, 'width', '1px');
- rect.setAttributeNS(null, 'height', '1px');
- rect.setAttributeNS(null, 'fill', current.fillColor);
- this.tgrp.appendChild(rect);
- },
-
- paintJpegXObject: function SVGGraphics_paintJpegXObject(objId, w, h) {
- var current = this.current;
- var imgObj = this.objs.get(objId);
- var imgEl = document.createElementNS(NS, 'svg:image');
- imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgObj.src);
- imgEl.setAttributeNS(null, 'width', imgObj.width + 'px');
- imgEl.setAttributeNS(null, 'height', imgObj.height + 'px');
- imgEl.setAttributeNS(null, 'x', '0');
- imgEl.setAttributeNS(null, 'y', pf(-h));
- imgEl.setAttributeNS(null, 'transform',
- 'scale(' + pf(1 / w) + ' ' + pf(-1 / h) + ')');
-
- this.tgrp.appendChild(imgEl);
- if (current.pendingClip) {
- this.cgrp.appendChild(this.tgrp);
- this.pgrp.appendChild(this.cgrp);
- } else {
- this.pgrp.appendChild(this.tgrp);
- }
- },
-
- paintImageXObject: function SVGGraphics_paintImageXObject(objId) {
- var imgData = this.objs.get(objId);
- if (!imgData) {
- warn('Dependent image isn\'t ready yet');
- return;
- }
- this.paintInlineImageXObject(imgData);
- },
-
- paintInlineImageXObject:
- function SVGGraphics_paintInlineImageXObject(imgData, mask) {
- var current = this.current;
- var width = imgData.width;
- var height = imgData.height;
-
- var imgSrc = convertImgDataToPng(imgData, this.forceDataSchema);
- var cliprect = document.createElementNS(NS, 'svg:rect');
- cliprect.setAttributeNS(null, 'x', '0');
- cliprect.setAttributeNS(null, 'y', '0');
- cliprect.setAttributeNS(null, 'width', pf(width));
- cliprect.setAttributeNS(null, 'height', pf(height));
- current.element = cliprect;
- this.clip('nonzero');
- var imgEl = document.createElementNS(NS, 'svg:image');
- imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgSrc);
- imgEl.setAttributeNS(null, 'x', '0');
- imgEl.setAttributeNS(null, 'y', pf(-height));
- imgEl.setAttributeNS(null, 'width', pf(width) + 'px');
- imgEl.setAttributeNS(null, 'height', pf(height) + 'px');
- imgEl.setAttributeNS(null, 'transform',
- 'scale(' + pf(1 / width) + ' ' +
- pf(-1 / height) + ')');
- if (mask) {
- mask.appendChild(imgEl);
- } else {
- this.tgrp.appendChild(imgEl);
- }
- if (current.pendingClip) {
- this.cgrp.appendChild(this.tgrp);
- this.pgrp.appendChild(this.cgrp);
- } else {
- this.pgrp.appendChild(this.tgrp);
- }
- },
-
- paintImageMaskXObject:
- function SVGGraphics_paintImageMaskXObject(imgData) {
- var current = this.current;
- var width = imgData.width;
- var height = imgData.height;
- var fillColor = current.fillColor;
-
- current.maskId = 'mask' + maskCount++;
- var mask = document.createElementNS(NS, 'svg:mask');
- mask.setAttributeNS(null, 'id', current.maskId);
-
- var rect = document.createElementNS(NS, 'svg:rect');
- rect.setAttributeNS(null, 'x', '0');
- rect.setAttributeNS(null, 'y', '0');
- rect.setAttributeNS(null, 'width', pf(width));
- rect.setAttributeNS(null, 'height', pf(height));
- rect.setAttributeNS(null, 'fill', fillColor);
- rect.setAttributeNS(null, 'mask', 'url(#' + current.maskId +')');
- this.defs.appendChild(mask);
- this.tgrp.appendChild(rect);
-
- this.paintInlineImageXObject(imgData, mask);
- },
-
- paintFormXObjectBegin:
- function SVGGraphics_paintFormXObjectBegin(matrix, bbox) {
- this.save();
-
- if (isArray(matrix) && matrix.length === 6) {
- this.transform(matrix[0], matrix[1], matrix[2],
- matrix[3], matrix[4], matrix[5]);
- }
-
- if (isArray(bbox) && bbox.length === 4) {
- var width = bbox[2] - bbox[0];
- var height = bbox[3] - bbox[1];
-
- var cliprect = document.createElementNS(NS, 'svg:rect');
- cliprect.setAttributeNS(null, 'x', bbox[0]);
- cliprect.setAttributeNS(null, 'y', bbox[1]);
- cliprect.setAttributeNS(null, 'width', pf(width));
- cliprect.setAttributeNS(null, 'height', pf(height));
- this.current.element = cliprect;
- this.clip('nonzero');
- this.endPath();
- }
- },
-
- paintFormXObjectEnd:
- function SVGGraphics_paintFormXObjectEnd() {
- this.restore();
- }
- };
- return SVGGraphics;
-})();
-
-exports.SVGGraphics = SVGGraphics;
-}));
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsDisplayAnnotationLayer = {}), root.pdfjsSharedUtil,
- root.pdfjsDisplayDOMUtils);
- }
-}(this, function (exports, sharedUtil, displayDOMUtils) {
-
-var AnnotationBorderStyleType = sharedUtil.AnnotationBorderStyleType;
-var AnnotationType = sharedUtil.AnnotationType;
-var Util = sharedUtil.Util;
-var addLinkAttributes = displayDOMUtils.addLinkAttributes;
-var LinkTarget = displayDOMUtils.LinkTarget;
-var getFilenameFromUrl = displayDOMUtils.getFilenameFromUrl;
-var warn = sharedUtil.warn;
-var CustomStyle = displayDOMUtils.CustomStyle;
-var getDefaultSetting = displayDOMUtils.getDefaultSetting;
-
-/**
- * @typedef {Object} AnnotationElementParameters
- * @property {Object} data
- * @property {HTMLDivElement} layer
- * @property {PDFPage} page
- * @property {PageViewport} viewport
- * @property {IPDFLinkService} linkService
- * @property {DownloadManager} downloadManager
- * @property {string} imageResourcesPath
- * @property {boolean} renderInteractiveForms
- */
-
-/**
- * @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:
- var fieldType = parameters.data.fieldType;
-
- switch (fieldType) {
- case 'Tx':
- return new TextWidgetAnnotationElement(parameters);
- }
- return new WidgetAnnotationElement(parameters);
-
- case AnnotationType.POPUP:
- return new PopupAnnotationElement(parameters);
-
- case AnnotationType.HIGHLIGHT:
- return new HighlightAnnotationElement(parameters);
-
- case AnnotationType.UNDERLINE:
- return new UnderlineAnnotationElement(parameters);
-
- case AnnotationType.SQUIGGLY:
- return new SquigglyAnnotationElement(parameters);
-
- case AnnotationType.STRIKEOUT:
- return new StrikeOutAnnotationElement(parameters);
-
- case AnnotationType.FILEATTACHMENT:
- return new FileAttachmentAnnotationElement(parameters);
-
- default:
- return new AnnotationElement(parameters);
- }
- }
-};
-
-/**
- * @class
- * @alias AnnotationElement
- */
-var AnnotationElement = (function AnnotationElementClosure() {
- function AnnotationElement(parameters, isRenderable) {
- this.isRenderable = isRenderable || false;
- this.data = parameters.data;
- this.layer = parameters.layer;
- this.page = parameters.page;
- this.viewport = parameters.viewport;
- this.linkService = parameters.linkService;
- this.downloadManager = parameters.downloadManager;
- this.imageResourcesPath = parameters.imageResourcesPath;
- this.renderInteractiveForms = parameters.renderInteractiveForms;
-
- if (isRenderable) {
- this.container = this._createContainer();
- }
- }
-
- AnnotationElement.prototype = /** @lends AnnotationElement.prototype */ {
- /**
- * Create an empty container for the annotation's HTML element.
- *
- * @private
- * @memberof AnnotationElement
- * @returns {HTMLSectionElement}
- */
- _createContainer: function AnnotationElement_createContainer() {
- var data = this.data, page = this.page, viewport = this.viewport;
- var container = document.createElement('section');
- var width = data.rect[2] - data.rect[0];
- var height = data.rect[3] - data.rect[1];
-
- container.setAttribute('data-annotation-id', data.id);
-
- // Do *not* modify `data.rect`, since that will corrupt the annotation
- // position on subsequent calls to `_createContainer` (see issue 6804).
- var rect = Util.normalizeRect([
- data.rect[0],
- page.view[3] - data.rect[1] + page.view[1],
- data.rect[2],
- page.view[3] - data.rect[3] + page.view[1]
- ]);
-
- CustomStyle.setProp('transform', container,
- 'matrix(' + viewport.transform.join(',') + ')');
- CustomStyle.setProp('transformOrigin', container,
- -rect[0] + 'px ' + -rect[1] + 'px');
-
- if (data.borderStyle.width > 0) {
- container.style.borderWidth = data.borderStyle.width + 'px';
- if (data.borderStyle.style !== AnnotationBorderStyleType.UNDERLINE) {
- // Underline styles only have a bottom border, so we do not need
- // to adjust for all borders. This yields a similar result as
- // Adobe Acrobat/Reader.
- width = width - 2 * data.borderStyle.width;
- height = height - 2 * data.borderStyle.width;
- }
-
- var horizontalRadius = data.borderStyle.horizontalCornerRadius;
- var verticalRadius = data.borderStyle.verticalCornerRadius;
- if (horizontalRadius > 0 || verticalRadius > 0) {
- var radius = horizontalRadius + 'px / ' + verticalRadius + 'px';
- CustomStyle.setProp('borderRadius', container, radius);
- }
-
- switch (data.borderStyle.style) {
- case AnnotationBorderStyleType.SOLID:
- container.style.borderStyle = 'solid';
- break;
-
- case AnnotationBorderStyleType.DASHED:
- container.style.borderStyle = 'dashed';
- break;
-
- case AnnotationBorderStyleType.BEVELED:
- warn('Unimplemented border style: beveled');
- break;
-
- case AnnotationBorderStyleType.INSET:
- warn('Unimplemented border style: inset');
- break;
-
- case AnnotationBorderStyleType.UNDERLINE:
- container.style.borderBottomStyle = 'solid';
- break;
-
- default:
- break;
- }
-
- if (data.color) {
- container.style.borderColor =
- Util.makeCssRgb(data.color[0] | 0,
- data.color[1] | 0,
- data.color[2] | 0);
- } else {
- // Transparent (invisible) border, so do not draw it at all.
- container.style.borderWidth = 0;
- }
- }
-
- container.style.left = rect[0] + 'px';
- container.style.top = rect[1] + 'px';
-
- container.style.width = width + 'px';
- container.style.height = height + 'px';
-
- return container;
- },
-
- /**
- * Create a popup for the annotation's HTML element. This is used for
- * annotations that do not have a Popup entry in the dictionary, but
- * are of a type that works with popups (such as Highlight annotations).
- *
- * @private
- * @param {HTMLSectionElement} container
- * @param {HTMLDivElement|HTMLImageElement|null} trigger
- * @param {Object} data
- * @memberof AnnotationElement
- */
- _createPopup:
- function AnnotationElement_createPopup(container, trigger, data) {
- // If no trigger element is specified, create it.
- if (!trigger) {
- trigger = document.createElement('div');
- trigger.style.height = container.style.height;
- trigger.style.width = container.style.width;
- container.appendChild(trigger);
- }
-
- var popupElement = new PopupElement({
- container: container,
- trigger: trigger,
- color: data.color,
- title: data.title,
- contents: data.contents,
- hideWrapper: true
- });
- var popup = popupElement.render();
-
- // Position the popup next to the annotation's container.
- popup.style.left = container.style.width;
-
- container.appendChild(popup);
- },
-
- /**
- * Render the annotation's HTML element in the empty container.
- *
- * @public
- * @memberof AnnotationElement
- */
- render: function AnnotationElement_render() {
- throw new Error('Abstract method AnnotationElement.render called');
- }
- };
-
- return AnnotationElement;
-})();
-
-/**
- * @class
- * @alias LinkAnnotationElement
- */
-var LinkAnnotationElement = (function LinkAnnotationElementClosure() {
- function LinkAnnotationElement(parameters) {
- AnnotationElement.call(this, parameters, true);
- }
-
- Util.inherit(LinkAnnotationElement, AnnotationElement, {
- /**
- * Render the link annotation's HTML element in the empty container.
- *
- * @public
- * @memberof LinkAnnotationElement
- * @returns {HTMLSectionElement}
- */
- render: function LinkAnnotationElement_render() {
- this.container.className = 'linkAnnotation';
-
- var link = document.createElement('a');
- addLinkAttributes(link, {
- url: this.data.url,
- target: (this.data.newWindow ? LinkTarget.BLANK : undefined),
- });
-
- if (!this.data.url) {
- if (this.data.action) {
- this._bindNamedAction(link, this.data.action);
- } else {
- this._bindLink(link, (this.data.dest || null));
- }
- }
-
- this.container.appendChild(link);
- return this.container;
- },
-
- /**
- * Bind internal links to the link element.
- *
- * @private
- * @param {Object} link
- * @param {Object} destination
- * @memberof LinkAnnotationElement
- */
- _bindLink: function LinkAnnotationElement_bindLink(link, destination) {
- var self = this;
-
- link.href = this.linkService.getDestinationHash(destination);
- link.onclick = function() {
- if (destination) {
- self.linkService.navigateTo(destination);
- }
- return false;
- };
- if (destination) {
- link.className = 'internalLink';
- }
- },
-
- /**
- * Bind named actions to the link element.
- *
- * @private
- * @param {Object} link
- * @param {Object} action
- * @memberof LinkAnnotationElement
- */
- _bindNamedAction:
- function LinkAnnotationElement_bindNamedAction(link, action) {
- var self = this;
-
- link.href = this.linkService.getAnchorUrl('');
- link.onclick = function() {
- self.linkService.executeNamedAction(action);
- return false;
- };
- link.className = 'internalLink';
- }
- });
-
- return LinkAnnotationElement;
-})();
-
-/**
- * @class
- * @alias TextAnnotationElement
- */
-var TextAnnotationElement = (function TextAnnotationElementClosure() {
- function TextAnnotationElement(parameters) {
- var isRenderable = !!(parameters.data.hasPopup ||
- parameters.data.title || parameters.data.contents);
- AnnotationElement.call(this, parameters, isRenderable);
- }
-
- Util.inherit(TextAnnotationElement, AnnotationElement, {
- /**
- * Render the text annotation's HTML element in the empty container.
- *
- * @public
- * @memberof TextAnnotationElement
- * @returns {HTMLSectionElement}
- */
- render: function TextAnnotationElement_render() {
- this.container.className = 'textAnnotation';
-
- var image = document.createElement('img');
- image.style.height = this.container.style.height;
- image.style.width = this.container.style.width;
- image.src = this.imageResourcesPath + 'annotation-' +
- this.data.name.toLowerCase() + '.svg';
- image.alt = '[{{type}} Annotation]';
- image.dataset.l10nId = 'text_annotation_type';
- image.dataset.l10nArgs = JSON.stringify({type: this.data.name});
-
- if (!this.data.hasPopup) {
- this._createPopup(this.container, image, this.data);
- }
-
- this.container.appendChild(image);
- return this.container;
- }
- });
-
- return TextAnnotationElement;
-})();
-
-/**
- * @class
- * @alias WidgetAnnotationElement
- */
-var WidgetAnnotationElement = (function WidgetAnnotationElementClosure() {
- function WidgetAnnotationElement(parameters) {
- var isRenderable = parameters.renderInteractiveForms ||
- (!parameters.data.hasAppearance && !!parameters.data.fieldValue);
- AnnotationElement.call(this, parameters, isRenderable);
- }
-
- Util.inherit(WidgetAnnotationElement, AnnotationElement, {
- /**
- * Render the widget annotation's HTML element in the empty container.
- *
- * @public
- * @memberof WidgetAnnotationElement
- * @returns {HTMLSectionElement}
- */
- render: function WidgetAnnotationElement_render() {
- // Show only the container for unsupported field types.
- return this.container;
- }
- });
-
- return WidgetAnnotationElement;
-})();
-
-/**
- * @class
- * @alias TextWidgetAnnotationElement
- */
-var TextWidgetAnnotationElement = (
- function TextWidgetAnnotationElementClosure() {
- var TEXT_ALIGNMENT = ['left', 'center', 'right'];
-
- function TextWidgetAnnotationElement(parameters) {
- WidgetAnnotationElement.call(this, parameters);
- }
-
- Util.inherit(TextWidgetAnnotationElement, WidgetAnnotationElement, {
- /**
- * Render the text widget annotation's HTML element in the empty container.
- *
- * @public
- * @memberof TextWidgetAnnotationElement
- * @returns {HTMLSectionElement}
- */
- render: function TextWidgetAnnotationElement_render() {
- this.container.className = 'textWidgetAnnotation';
-
- var element = null;
- if (this.renderInteractiveForms) {
- // NOTE: We cannot set the values using `element.value` below, since it
- // prevents the AnnotationLayer rasterizer in `test/driver.js`
- // from parsing the elements correctly for the reference tests.
- if (this.data.multiLine) {
- element = document.createElement('textarea');
- element.textContent = this.data.fieldValue;
- } else {
- element = document.createElement('input');
- element.type = 'text';
- element.setAttribute('value', this.data.fieldValue);
- }
-
- element.disabled = this.data.readOnly;
-
- if (this.data.maxLen !== null) {
- element.maxLength = this.data.maxLen;
- }
-
- if (this.data.comb) {
- var fieldWidth = this.data.rect[2] - this.data.rect[0];
- var combWidth = fieldWidth / this.data.maxLen;
-
- element.classList.add('comb');
- element.style.letterSpacing = 'calc(' + combWidth + 'px - 1ch)';
- }
- } else {
- element = document.createElement('div');
- element.textContent = this.data.fieldValue;
- element.style.verticalAlign = 'middle';
- element.style.display = 'table-cell';
-
- var font = null;
- if (this.data.fontRefName) {
- font = this.page.commonObjs.getData(this.data.fontRefName);
- }
- this._setTextStyle(element, font);
- }
-
- if (this.data.textAlignment !== null) {
- element.style.textAlign = TEXT_ALIGNMENT[this.data.textAlignment];
- }
-
- this.container.appendChild(element);
- return this.container;
- },
-
- /**
- * Apply text styles to the text in the element.
- *
- * @private
- * @param {HTMLDivElement} element
- * @param {Object} font
- * @memberof TextWidgetAnnotationElement
- */
- _setTextStyle:
- function TextWidgetAnnotationElement_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 TextWidgetAnnotationElement;
-})();
-
-/**
- * @class
- * @alias PopupAnnotationElement
- */
-var PopupAnnotationElement = (function PopupAnnotationElementClosure() {
- function PopupAnnotationElement(parameters) {
- var isRenderable = !!(parameters.data.title || parameters.data.contents);
- AnnotationElement.call(this, parameters, isRenderable);
- }
-
- Util.inherit(PopupAnnotationElement, AnnotationElement, {
- /**
- * Render the popup annotation's HTML element in the empty container.
- *
- * @public
- * @memberof PopupAnnotationElement
- * @returns {HTMLSectionElement}
- */
- render: function PopupAnnotationElement_render() {
- this.container.className = 'popupAnnotation';
-
- var selector = '[data-annotation-id="' + this.data.parentId + '"]';
- var parentElement = this.layer.querySelector(selector);
- if (!parentElement) {
- return this.container;
- }
-
- var popup = new PopupElement({
- container: this.container,
- trigger: parentElement,
- color: this.data.color,
- title: this.data.title,
- contents: this.data.contents
- });
-
- // Position the popup next to the parent annotation's container.
- // PDF viewers ignore a popup annotation's rectangle.
- var parentLeft = parseFloat(parentElement.style.left);
- var parentWidth = parseFloat(parentElement.style.width);
- CustomStyle.setProp('transformOrigin', this.container,
- -(parentLeft + parentWidth) + 'px -' +
- parentElement.style.top);
- this.container.style.left = (parentLeft + parentWidth) + 'px';
-
- this.container.appendChild(popup.render());
- return this.container;
- }
- });
-
- return PopupAnnotationElement;
-})();
-
-/**
- * @class
- * @alias PopupElement
- */
-var PopupElement = (function PopupElementClosure() {
- var BACKGROUND_ENLIGHT = 0.7;
-
- function PopupElement(parameters) {
- this.container = parameters.container;
- this.trigger = parameters.trigger;
- this.color = parameters.color;
- this.title = parameters.title;
- this.contents = parameters.contents;
- this.hideWrapper = parameters.hideWrapper || false;
-
- this.pinned = false;
- }
-
- PopupElement.prototype = /** @lends PopupElement.prototype */ {
- /**
- * Render the popup's HTML element.
- *
- * @public
- * @memberof PopupElement
- * @returns {HTMLSectionElement}
- */
- render: function PopupElement_render() {
- var wrapper = document.createElement('div');
- wrapper.className = 'popupWrapper';
-
- // For Popup annotations we hide the entire section because it contains
- // only the popup. However, for Text annotations without a separate Popup
- // annotation, we cannot hide the entire container as the image would
- // disappear too. In that special case, hiding the wrapper suffices.
- this.hideElement = (this.hideWrapper ? wrapper : this.container);
- this.hideElement.setAttribute('hidden', true);
-
- var popup = document.createElement('div');
- popup.className = 'popup';
-
- var color = this.color;
- if (color) {
- // Enlighten the color.
- var r = BACKGROUND_ENLIGHT * (255 - color[0]) + color[0];
- var g = BACKGROUND_ENLIGHT * (255 - color[1]) + color[1];
- var b = BACKGROUND_ENLIGHT * (255 - color[2]) + color[2];
- popup.style.backgroundColor = Util.makeCssRgb(r | 0, g | 0, b | 0);
- }
-
- var contents = this._formatContents(this.contents);
- var title = document.createElement('h1');
- title.textContent = this.title;
-
- // Attach the event listeners to the trigger element.
- this.trigger.addEventListener('click', this._toggle.bind(this));
- this.trigger.addEventListener('mouseover', this._show.bind(this, false));
- this.trigger.addEventListener('mouseout', this._hide.bind(this, false));
- popup.addEventListener('click', this._hide.bind(this, true));
-
- popup.appendChild(title);
- popup.appendChild(contents);
- wrapper.appendChild(popup);
- return wrapper;
- },
-
- /**
- * Format the contents of the popup by adding newlines where necessary.
- *
- * @private
- * @param {string} contents
- * @memberof PopupElement
- * @returns {HTMLParagraphElement}
- */
- _formatContents: function PopupElement_formatContents(contents) {
- var p = document.createElement('p');
- var lines = contents.split(/(?:\r\n?|\n)/);
- for (var i = 0, ii = lines.length; i < ii; ++i) {
- var line = lines[i];
- p.appendChild(document.createTextNode(line));
- if (i < (ii - 1)) {
- p.appendChild(document.createElement('br'));
- }
- }
- return p;
- },
-
- /**
- * Toggle the visibility of the popup.
- *
- * @private
- * @memberof PopupElement
- */
- _toggle: function PopupElement_toggle() {
- if (this.pinned) {
- this._hide(true);
- } else {
- this._show(true);
- }
- },
-
- /**
- * Show the popup.
- *
- * @private
- * @param {boolean} pin
- * @memberof PopupElement
- */
- _show: function PopupElement_show(pin) {
- if (pin) {
- this.pinned = true;
- }
- if (this.hideElement.hasAttribute('hidden')) {
- this.hideElement.removeAttribute('hidden');
- this.container.style.zIndex += 1;
- }
- },
-
- /**
- * Hide the popup.
- *
- * @private
- * @param {boolean} unpin
- * @memberof PopupElement
- */
- _hide: function PopupElement_hide(unpin) {
- if (unpin) {
- this.pinned = false;
- }
- if (!this.hideElement.hasAttribute('hidden') && !this.pinned) {
- this.hideElement.setAttribute('hidden', true);
- this.container.style.zIndex -= 1;
- }
- }
- };
-
- return PopupElement;
-})();
-
-/**
- * @class
- * @alias HighlightAnnotationElement
- */
-var HighlightAnnotationElement = (
- function HighlightAnnotationElementClosure() {
- function HighlightAnnotationElement(parameters) {
- var isRenderable = !!(parameters.data.hasPopup ||
- parameters.data.title || parameters.data.contents);
- AnnotationElement.call(this, parameters, isRenderable);
- }
-
- Util.inherit(HighlightAnnotationElement, AnnotationElement, {
- /**
- * Render the highlight annotation's HTML element in the empty container.
- *
- * @public
- * @memberof HighlightAnnotationElement
- * @returns {HTMLSectionElement}
- */
- render: function HighlightAnnotationElement_render() {
- this.container.className = 'highlightAnnotation';
-
- if (!this.data.hasPopup) {
- this._createPopup(this.container, null, this.data);
- }
-
- return this.container;
- }
- });
-
- return HighlightAnnotationElement;
-})();
-
-/**
- * @class
- * @alias UnderlineAnnotationElement
- */
-var UnderlineAnnotationElement = (
- function UnderlineAnnotationElementClosure() {
- function UnderlineAnnotationElement(parameters) {
- var isRenderable = !!(parameters.data.hasPopup ||
- parameters.data.title || parameters.data.contents);
- AnnotationElement.call(this, parameters, isRenderable);
- }
-
- Util.inherit(UnderlineAnnotationElement, AnnotationElement, {
- /**
- * Render the underline annotation's HTML element in the empty container.
- *
- * @public
- * @memberof UnderlineAnnotationElement
- * @returns {HTMLSectionElement}
- */
- render: function UnderlineAnnotationElement_render() {
- this.container.className = 'underlineAnnotation';
-
- if (!this.data.hasPopup) {
- this._createPopup(this.container, null, this.data);
- }
-
- return this.container;
- }
- });
-
- return UnderlineAnnotationElement;
-})();
-
-/**
- * @class
- * @alias SquigglyAnnotationElement
- */
-var SquigglyAnnotationElement = (function SquigglyAnnotationElementClosure() {
- function SquigglyAnnotationElement(parameters) {
- var isRenderable = !!(parameters.data.hasPopup ||
- parameters.data.title || parameters.data.contents);
- AnnotationElement.call(this, parameters, isRenderable);
- }
-
- Util.inherit(SquigglyAnnotationElement, AnnotationElement, {
- /**
- * Render the squiggly annotation's HTML element in the empty container.
- *
- * @public
- * @memberof SquigglyAnnotationElement
- * @returns {HTMLSectionElement}
- */
- render: function SquigglyAnnotationElement_render() {
- this.container.className = 'squigglyAnnotation';
-
- if (!this.data.hasPopup) {
- this._createPopup(this.container, null, this.data);
- }
-
- return this.container;
- }
- });
-
- return SquigglyAnnotationElement;
-})();
-
-/**
- * @class
- * @alias StrikeOutAnnotationElement
- */
-var StrikeOutAnnotationElement = (
- function StrikeOutAnnotationElementClosure() {
- function StrikeOutAnnotationElement(parameters) {
- var isRenderable = !!(parameters.data.hasPopup ||
- parameters.data.title || parameters.data.contents);
- AnnotationElement.call(this, parameters, isRenderable);
- }
-
- Util.inherit(StrikeOutAnnotationElement, AnnotationElement, {
- /**
- * Render the strikeout annotation's HTML element in the empty container.
- *
- * @public
- * @memberof StrikeOutAnnotationElement
- * @returns {HTMLSectionElement}
- */
- render: function StrikeOutAnnotationElement_render() {
- this.container.className = 'strikeoutAnnotation';
-
- if (!this.data.hasPopup) {
- this._createPopup(this.container, null, this.data);
- }
-
- return this.container;
- }
- });
-
- return StrikeOutAnnotationElement;
-})();
-
-/**
- * @class
- * @alias FileAttachmentAnnotationElement
- */
-var FileAttachmentAnnotationElement = (
- function FileAttachmentAnnotationElementClosure() {
- function FileAttachmentAnnotationElement(parameters) {
- AnnotationElement.call(this, parameters, true);
-
- this.filename = getFilenameFromUrl(parameters.data.file.filename);
- this.content = parameters.data.file.content;
- }
-
- Util.inherit(FileAttachmentAnnotationElement, AnnotationElement, {
- /**
- * Render the file attachment annotation's HTML element in the empty
- * container.
- *
- * @public
- * @memberof FileAttachmentAnnotationElement
- * @returns {HTMLSectionElement}
- */
- render: function FileAttachmentAnnotationElement_render() {
- this.container.className = 'fileAttachmentAnnotation';
-
- var trigger = document.createElement('div');
- trigger.style.height = this.container.style.height;
- trigger.style.width = this.container.style.width;
- trigger.addEventListener('dblclick', this._download.bind(this));
-
- if (!this.data.hasPopup && (this.data.title || this.data.contents)) {
- this._createPopup(this.container, trigger, this.data);
- }
-
- this.container.appendChild(trigger);
- return this.container;
- },
-
- /**
- * Download the file attachment associated with this annotation.
- *
- * @private
- * @memberof FileAttachmentAnnotationElement
- */
- _download: function FileAttachmentAnnotationElement_download() {
- if (!this.downloadManager) {
- warn('Download cannot be started due to unavailable download manager');
- return;
- }
- this.downloadManager.downloadData(this.content, this.filename, '');
- }
- });
-
- return FileAttachmentAnnotationElement;
-})();
-
-/**
- * @typedef {Object} AnnotationLayerParameters
- * @property {PageViewport} viewport
- * @property {HTMLDivElement} div
- * @property {Array} annotations
- * @property {PDFPage} page
- * @property {IPDFLinkService} linkService
- * @property {string} imageResourcesPath
- * @property {boolean} renderInteractiveForms
- */
-
-/**
- * @class
- * @alias AnnotationLayer
- */
-var AnnotationLayer = (function AnnotationLayerClosure() {
- return {
- /**
- * Render a new annotation layer with all annotation elements.
- *
- * @public
- * @param {AnnotationLayerParameters} parameters
- * @memberof AnnotationLayer
- */
- render: function AnnotationLayer_render(parameters) {
- var annotationElementFactory = new AnnotationElementFactory();
-
- for (var i = 0, ii = parameters.annotations.length; i < ii; i++) {
- var data = parameters.annotations[i];
- if (!data) {
- continue;
- }
-
- var properties = {
- data: data,
- layer: parameters.div,
- page: parameters.page,
- viewport: parameters.viewport,
- linkService: parameters.linkService,
- downloadManager: parameters.downloadManager,
- imageResourcesPath: parameters.imageResourcesPath ||
- getDefaultSetting('imageResourcesPath'),
- renderInteractiveForms: parameters.renderInteractiveForms || false,
- };
- var element = annotationElementFactory.create(properties);
- if (element.isRenderable) {
- parameters.div.appendChild(element.render());
- }
- }
- },
-
- /**
- * Update the annotation elements on existing annotation layer.
- *
- * @public
- * @param {AnnotationLayerParameters} parameters
- * @memberof AnnotationLayer
- */
- update: function AnnotationLayer_update(parameters) {
- for (var i = 0, ii = parameters.annotations.length; i < ii; i++) {
- var data = parameters.annotations[i];
- var element = parameters.div.querySelector(
- '[data-annotation-id="' + data.id + '"]');
- if (element) {
- CustomStyle.setProp('transform', element,
- 'matrix(' + parameters.viewport.transform.join(',') + ')');
- }
- }
- parameters.div.removeAttribute('hidden');
- }
- };
-})();
-
-exports.AnnotationLayer = AnnotationLayer;
-}));
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsDisplayTextLayer = {}), root.pdfjsSharedUtil,
- root.pdfjsDisplayDOMUtils);
- }
-}(this, function (exports, sharedUtil, displayDOMUtils) {
-
-var Util = sharedUtil.Util;
-var createPromiseCapability = sharedUtil.createPromiseCapability;
-var CustomStyle = displayDOMUtils.CustomStyle;
-var getDefaultSetting = displayDOMUtils.getDefaultSetting;
-
-/**
- * Text layer render parameters.
- *
- * @typedef {Object} TextLayerRenderParameters
- * @property {TextContent} textContent - Text content to render (the object is
- * returned by the page's getTextContent() method).
- * @property {HTMLElement} container - HTML element that will contain text runs.
- * @property {PageViewport} viewport - The target viewport to properly
- * layout the text runs.
- * @property {Array} textDivs - (optional) HTML elements that are correspond
- * the text items of the textContent input. This is output and shall be
- * initially be set to empty array.
- * @property {number} timeout - (optional) Delay in milliseconds before
- * rendering of the text runs occurs.
- * @property {boolean} enhanceTextSelection - (optional) Whether to turn on the
- * text selection enhancement.
- */
-var renderTextLayer = (function renderTextLayerClosure() {
- var MAX_TEXT_DIVS_TO_RENDER = 100000;
-
- var NonWhitespaceRegexp = /\S/;
-
- function isAllWhitespace(str) {
- return !NonWhitespaceRegexp.test(str);
- }
-
- // Text layers may contain many thousand div's, and using `styleBuf` avoids
- // creating many intermediate strings when building their 'style' properties.
- var styleBuf = ['left: ', 0, 'px; top: ', 0, 'px; font-size: ', 0,
- 'px; font-family: ', '', ';'];
-
- function appendText(task, geom, styles) {
- // Initialize all used properties to keep the caches monomorphic.
- var textDiv = document.createElement('div');
- var textDivProperties = {
- style: null,
- angle: 0,
- canvasWidth: 0,
- isWhitespace: false,
- originalTransform: null,
- paddingBottom: 0,
- paddingLeft: 0,
- paddingRight: 0,
- paddingTop: 0,
- scale: 1,
- };
-
- task._textDivs.push(textDiv);
- if (isAllWhitespace(geom.str)) {
- textDivProperties.isWhitespace = true;
- task._textDivProperties.set(textDiv, textDivProperties);
- return;
- }
-
- var tx = Util.transform(task._viewport.transform, geom.transform);
- var angle = Math.atan2(tx[1], tx[0]);
- var style = styles[geom.fontName];
- 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));
- }
- styleBuf[1] = left;
- styleBuf[3] = top;
- styleBuf[5] = fontHeight;
- styleBuf[7] = style.fontFamily;
- textDivProperties.style = styleBuf.join('');
- textDiv.setAttribute('style', textDivProperties.style);
-
- 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. We only use `dataset`
- // here to make the font name available for the debugger.
- if (getDefaultSetting('pdfBug')) {
- textDiv.dataset.fontName = geom.fontName;
- }
- if (angle !== 0) {
- textDivProperties.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) {
- textDivProperties.canvasWidth = geom.height * task._viewport.scale;
- } else {
- textDivProperties.canvasWidth = geom.width * task._viewport.scale;
- }
- }
- task._textDivProperties.set(textDiv, textDivProperties);
-
- if (task._enhanceTextSelection) {
- var angleCos = 1, angleSin = 0;
- if (angle !== 0) {
- angleCos = Math.cos(angle);
- angleSin = Math.sin(angle);
- }
- var divWidth = (style.vertical ? geom.height : geom.width) *
- task._viewport.scale;
- var divHeight = fontHeight;
-
- var m, b;
- if (angle !== 0) {
- m = [angleCos, angleSin, -angleSin, angleCos, left, top];
- b = Util.getAxialAlignedBoundingBox([0, 0, divWidth, divHeight], m);
- } else {
- b = [left, top, left + divWidth, top + divHeight];
- }
-
- task._bounds.push({
- left: b[0],
- top: b[1],
- right: b[2],
- bottom: b[3],
- div: textDiv,
- size: [divWidth, divHeight],
- m: m
- });
- }
- }
-
- 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) {
- task._renderingDone = true;
- 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];
- var textDivProperties = task._textDivProperties.get(textDiv);
- if (textDivProperties.isWhitespace) {
- 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;
- textLayerFrag.appendChild(textDiv);
-
- var transform = '';
- if (textDivProperties.canvasWidth !== 0 && width > 0) {
- textDivProperties.scale = textDivProperties.canvasWidth / width;
- transform = 'scaleX(' + textDivProperties.scale + ')';
- }
- if (textDivProperties.angle !== 0) {
- transform = 'rotate(' + textDivProperties.angle + 'deg) ' + transform;
- }
- if (transform !== '') {
- textDivProperties.originalTransform = transform;
- CustomStyle.setProp('transform', textDiv, transform);
- }
- task._textDivProperties.set(textDiv, textDivProperties);
- }
- task._renderingDone = true;
- capability.resolve();
- }
-
- function expand(task) {
- var bounds = task._bounds;
- var viewport = task._viewport;
-
- var expanded = expandBounds(viewport.width, viewport.height, bounds);
- for (var i = 0; i < expanded.length; i++) {
- var div = bounds[i].div;
- var divProperties = task._textDivProperties.get(div);
- if (divProperties.angle === 0) {
- divProperties.paddingLeft = bounds[i].left - expanded[i].left;
- divProperties.paddingTop = bounds[i].top - expanded[i].top;
- divProperties.paddingRight = expanded[i].right - bounds[i].right;
- divProperties.paddingBottom = expanded[i].bottom - bounds[i].bottom;
- task._textDivProperties.set(div, divProperties);
- continue;
- }
- // Box is rotated -- trying to find padding so rotated div will not
- // exceed its expanded bounds.
- var e = expanded[i], b = bounds[i];
- var m = b.m, c = m[0], s = m[1];
- // Finding intersections with expanded box.
- var points = [[0, 0], [0, b.size[1]], [b.size[0], 0], b.size];
- var ts = new Float64Array(64);
- points.forEach(function (p, i) {
- var t = Util.applyTransform(p, m);
- ts[i + 0] = c && (e.left - t[0]) / c;
- ts[i + 4] = s && (e.top - t[1]) / s;
- ts[i + 8] = c && (e.right - t[0]) / c;
- ts[i + 12] = s && (e.bottom - t[1]) / s;
-
- ts[i + 16] = s && (e.left - t[0]) / -s;
- ts[i + 20] = c && (e.top - t[1]) / c;
- ts[i + 24] = s && (e.right - t[0]) / -s;
- ts[i + 28] = c && (e.bottom - t[1]) / c;
-
- ts[i + 32] = c && (e.left - t[0]) / -c;
- ts[i + 36] = s && (e.top - t[1]) / -s;
- ts[i + 40] = c && (e.right - t[0]) / -c;
- ts[i + 44] = s && (e.bottom - t[1]) / -s;
-
- ts[i + 48] = s && (e.left - t[0]) / s;
- ts[i + 52] = c && (e.top - t[1]) / -c;
- ts[i + 56] = s && (e.right - t[0]) / s;
- ts[i + 60] = c && (e.bottom - t[1]) / -c;
- });
- var findPositiveMin = function (ts, offset, count) {
- var result = 0;
- for (var i = 0; i < count; i++) {
- var t = ts[offset++];
- if (t > 0) {
- result = result ? Math.min(t, result) : t;
- }
- }
- return result;
- };
- // Not based on math, but to simplify calculations, using cos and sin
- // absolute values to not exceed the box (it can but insignificantly).
- var boxScale = 1 + Math.min(Math.abs(c), Math.abs(s));
- divProperties.paddingLeft = findPositiveMin(ts, 32, 16) / boxScale;
- divProperties.paddingTop = findPositiveMin(ts, 48, 16) / boxScale;
- divProperties.paddingRight = findPositiveMin(ts, 0, 16) / boxScale;
- divProperties.paddingBottom = findPositiveMin(ts, 16, 16) / boxScale;
- task._textDivProperties.set(div, divProperties);
- }
- }
-
- function expandBounds(width, height, boxes) {
- var bounds = boxes.map(function (box, i) {
- return {
- x1: box.left,
- y1: box.top,
- x2: box.right,
- y2: box.bottom,
- index: i,
- x1New: undefined,
- x2New: undefined
- };
- });
- expandBoundsLTR(width, bounds);
- var expanded = new Array(boxes.length);
- bounds.forEach(function (b) {
- var i = b.index;
- expanded[i] = {
- left: b.x1New,
- top: 0,
- right: b.x2New,
- bottom: 0
- };
- });
-
- // Rotating on 90 degrees and extending extended boxes. Reusing the bounds
- // array and objects.
- boxes.map(function (box, i) {
- var e = expanded[i], b = bounds[i];
- b.x1 = box.top;
- b.y1 = width - e.right;
- b.x2 = box.bottom;
- b.y2 = width - e.left;
- b.index = i;
- b.x1New = undefined;
- b.x2New = undefined;
- });
- expandBoundsLTR(height, bounds);
-
- bounds.forEach(function (b) {
- var i = b.index;
- expanded[i].top = b.x1New;
- expanded[i].bottom = b.x2New;
- });
- return expanded;
- }
-
- function expandBoundsLTR(width, bounds) {
- // Sorting by x1 coordinate and walk by the bounds in the same order.
- bounds.sort(function (a, b) { return a.x1 - b.x1 || a.index - b.index; });
-
- // First we see on the horizon is a fake boundary.
- var fakeBoundary = {
- x1: -Infinity,
- y1: -Infinity,
- x2: 0,
- y2: Infinity,
- index: -1,
- x1New: 0,
- x2New: 0
- };
- var horizon = [{
- start: -Infinity,
- end: Infinity,
- boundary: fakeBoundary
- }];
-
- bounds.forEach(function (boundary) {
- // Searching for the affected part of horizon.
- // TODO red-black tree or simple binary search
- var i = 0;
- while (i < horizon.length && horizon[i].end <= boundary.y1) {
- i++;
- }
- var j = horizon.length - 1;
- while(j >= 0 && horizon[j].start >= boundary.y2) {
- j--;
- }
-
- var horizonPart, affectedBoundary;
- var q, k, maxXNew = -Infinity;
- for (q = i; q <= j; q++) {
- horizonPart = horizon[q];
- affectedBoundary = horizonPart.boundary;
- var xNew;
- if (affectedBoundary.x2 > boundary.x1) {
- // In the middle of the previous element, new x shall be at the
- // boundary start. Extending if further if the affected bondary
- // placed on top of the current one.
- xNew = affectedBoundary.index > boundary.index ?
- affectedBoundary.x1New : boundary.x1;
- } else if (affectedBoundary.x2New === undefined) {
- // We have some space in between, new x in middle will be a fair
- // choice.
- xNew = (affectedBoundary.x2 + boundary.x1) / 2;
- } else {
- // Affected boundary has x2new set, using it as new x.
- xNew = affectedBoundary.x2New;
- }
- if (xNew > maxXNew) {
- maxXNew = xNew;
- }
- }
-
- // Set new x1 for current boundary.
- boundary.x1New = maxXNew;
-
- // Adjusts new x2 for the affected boundaries.
- for (q = i; q <= j; q++) {
- horizonPart = horizon[q];
- affectedBoundary = horizonPart.boundary;
- if (affectedBoundary.x2New === undefined) {
- // Was not set yet, choosing new x if possible.
- if (affectedBoundary.x2 > boundary.x1) {
- // Current and affected boundaries intersect. If affected boundary
- // is placed on top of the current, shrinking the affected.
- if (affectedBoundary.index > boundary.index) {
- affectedBoundary.x2New = affectedBoundary.x2;
- }
- } else {
- affectedBoundary.x2New = maxXNew;
- }
- } else if (affectedBoundary.x2New > maxXNew) {
- // Affected boundary is touching new x, pushing it back.
- affectedBoundary.x2New = Math.max(maxXNew, affectedBoundary.x2);
- }
- }
-
- // Fixing the horizon.
- var changedHorizon = [], lastBoundary = null;
- for (q = i; q <= j; q++) {
- horizonPart = horizon[q];
- affectedBoundary = horizonPart.boundary;
- // Checking which boundary will be visible.
- var useBoundary = affectedBoundary.x2 > boundary.x2 ?
- affectedBoundary : boundary;
- if (lastBoundary === useBoundary) {
- // Merging with previous.
- changedHorizon[changedHorizon.length - 1].end = horizonPart.end;
- } else {
- changedHorizon.push({
- start: horizonPart.start,
- end: horizonPart.end,
- boundary: useBoundary
- });
- lastBoundary = useBoundary;
- }
- }
- if (horizon[i].start < boundary.y1) {
- changedHorizon[0].start = boundary.y1;
- changedHorizon.unshift({
- start: horizon[i].start,
- end: boundary.y1,
- boundary: horizon[i].boundary
- });
- }
- if (boundary.y2 < horizon[j].end) {
- changedHorizon[changedHorizon.length - 1].end = boundary.y2;
- changedHorizon.push({
- start: boundary.y2,
- end: horizon[j].end,
- boundary: horizon[j].boundary
- });
- }
-
- // Set x2 new of boundary that is no longer visible (see overlapping case
- // above).
- // TODO more efficient, e.g. via reference counting.
- for (q = i; q <= j; q++) {
- horizonPart = horizon[q];
- affectedBoundary = horizonPart.boundary;
- if (affectedBoundary.x2New !== undefined) {
- continue;
- }
- var used = false;
- for (k = i - 1; !used && k >= 0 &&
- horizon[k].start >= affectedBoundary.y1; k--) {
- used = horizon[k].boundary === affectedBoundary;
- }
- for (k = j + 1; !used && k < horizon.length &&
- horizon[k].end <= affectedBoundary.y2; k++) {
- used = horizon[k].boundary === affectedBoundary;
- }
- for (k = 0; !used && k < changedHorizon.length; k++) {
- used = changedHorizon[k].boundary === affectedBoundary;
- }
- if (!used) {
- affectedBoundary.x2New = maxXNew;
- }
- }
-
- Array.prototype.splice.apply(horizon,
- [i, j - i + 1].concat(changedHorizon));
- });
-
- // Set new x2 for all unset boundaries.
- horizon.forEach(function (horizonPart) {
- var affectedBoundary = horizonPart.boundary;
- if (affectedBoundary.x2New === undefined) {
- affectedBoundary.x2New = Math.max(width, affectedBoundary.x2);
- }
- });
- }
-
- /**
- * Text layer rendering task.
- *
- * @param {TextContent} textContent
- * @param {HTMLElement} container
- * @param {PageViewport} viewport
- * @param {Array} textDivs
- * @param {boolean} enhanceTextSelection
- * @private
- */
- function TextLayerRenderTask(textContent, container, viewport, textDivs,
- enhanceTextSelection) {
- this._textContent = textContent;
- this._container = container;
- this._viewport = viewport;
- this._textDivs = textDivs || [];
- this._textDivProperties = new WeakMap();
- this._renderingDone = false;
- this._canceled = false;
- this._capability = createPromiseCapability();
- this._renderTimer = null;
- this._bounds = [];
- this._enhanceTextSelection = !!enhanceTextSelection;
- }
- 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 textStyles = this._textContent.styles;
- for (var i = 0, len = textItems.length; i < len; i++) {
- appendText(this, textItems[i], textStyles);
- }
-
- if (!timeout) { // Render right away
- render(this);
- } else { // Schedule
- var self = this;
- this._renderTimer = setTimeout(function() {
- render(self);
- self._renderTimer = null;
- }, timeout);
- }
- },
-
- expandTextDivs: function TextLayer_expandTextDivs(expandDivs) {
- if (!this._enhanceTextSelection || !this._renderingDone) {
- return;
- }
- if (this._bounds !== null) {
- expand(this);
- this._bounds = null;
- }
-
- for (var i = 0, ii = this._textDivs.length; i < ii; i++) {
- var div = this._textDivs[i];
- var divProperties = this._textDivProperties.get(div);
-
- if (divProperties.isWhitespace) {
- continue;
- }
- if (expandDivs) {
- var transform = '', padding = '';
-
- if (divProperties.scale !== 1) {
- transform = 'scaleX(' + divProperties.scale + ')';
- }
- if (divProperties.angle !== 0) {
- transform = 'rotate(' + divProperties.angle + 'deg) ' + transform;
- }
- if (divProperties.paddingLeft !== 0) {
- padding += ' padding-left: ' +
- (divProperties.paddingLeft / divProperties.scale) + 'px;';
- transform += ' translateX(' +
- (-divProperties.paddingLeft / divProperties.scale) + 'px)';
- }
- if (divProperties.paddingTop !== 0) {
- padding += ' padding-top: ' + divProperties.paddingTop + 'px;';
- transform += ' translateY(' + (-divProperties.paddingTop) + 'px)';
- }
- if (divProperties.paddingRight !== 0) {
- padding += ' padding-right: ' +
- (divProperties.paddingRight / divProperties.scale) + 'px;';
- }
- if (divProperties.paddingBottom !== 0) {
- padding += ' padding-bottom: ' +
- divProperties.paddingBottom + 'px;';
- }
-
- if (padding !== '') {
- div.setAttribute('style', divProperties.style + padding);
- }
- if (transform !== '') {
- CustomStyle.setProp('transform', div, transform);
- }
- } else {
- div.style.padding = 0;
- CustomStyle.setProp('transform', div,
- divProperties.originalTransform || '');
- }
- }
- },
- };
-
- /**
- * 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,
- renderParameters.enhanceTextSelection);
- task._render(renderParameters.timeout);
- return task;
- }
-
- return renderTextLayer;
-})();
-
-exports.renderTextLayer = renderTextLayer;
-}));
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsDisplayWebGL = {}), root.pdfjsSharedUtil,
- root.pdfjsDisplayDOMUtils);
- }
-}(this, function (exports, sharedUtil, displayDOMUtils) {
-
-var shadow = sharedUtil.shadow;
-var getDefaultSetting = displayDOMUtils.getDefaultSetting;
-
-var WebGLUtils = (function WebGLUtilsClosure() {
- function loadShader(gl, code, shaderType) {
- var shader = gl.createShader(shaderType);
- gl.shaderSource(shader, code);
- gl.compileShader(shader);
- var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
- if (!compiled) {
- var errorMsg = gl.getShaderInfoLog(shader);
- throw new Error('Error during shader compilation: ' + errorMsg);
- }
- return shader;
- }
- function createVertexShader(gl, code) {
- return loadShader(gl, code, gl.VERTEX_SHADER);
- }
- function createFragmentShader(gl, code) {
- return loadShader(gl, code, gl.FRAGMENT_SHADER);
- }
- function createProgram(gl, shaders) {
- var program = gl.createProgram();
- for (var i = 0, ii = shaders.length; i < ii; ++i) {
- gl.attachShader(program, shaders[i]);
- }
- gl.linkProgram(program);
- var linked = gl.getProgramParameter(program, gl.LINK_STATUS);
- if (!linked) {
- var errorMsg = gl.getProgramInfoLog(program);
- throw new Error('Error during program linking: ' + errorMsg);
- }
- return program;
- }
- function createTexture(gl, image, textureId) {
- gl.activeTexture(textureId);
- var texture = gl.createTexture();
- gl.bindTexture(gl.TEXTURE_2D, texture);
-
- // Set the parameters so we can render any size image.
- gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
- gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
- gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
- gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
-
- // Upload the image into the texture.
- gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);
- return texture;
- }
-
- var currentGL, currentCanvas;
- function generateGL() {
- if (currentGL) {
- return;
- }
- currentCanvas = document.createElement('canvas');
- currentGL = currentCanvas.getContext('webgl',
- { premultipliedalpha: false });
- }
-
- var smaskVertexShaderCode = '\
- attribute vec2 a_position; \
- attribute vec2 a_texCoord; \
- \
- uniform vec2 u_resolution; \
- \
- varying vec2 v_texCoord; \
- \
- void main() { \
- vec2 clipSpace = (a_position / u_resolution) * 2.0 - 1.0; \
- gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1); \
- \
- v_texCoord = a_texCoord; \
- } ';
-
- var smaskFragmentShaderCode = '\
- precision mediump float; \
- \
- uniform vec4 u_backdrop; \
- uniform int u_subtype; \
- uniform sampler2D u_image; \
- uniform sampler2D u_mask; \
- \
- varying vec2 v_texCoord; \
- \
- void main() { \
- vec4 imageColor = texture2D(u_image, v_texCoord); \
- vec4 maskColor = texture2D(u_mask, v_texCoord); \
- if (u_backdrop.a > 0.0) { \
- maskColor.rgb = maskColor.rgb * maskColor.a + \
- u_backdrop.rgb * (1.0 - maskColor.a); \
- } \
- float lum; \
- if (u_subtype == 0) { \
- lum = maskColor.a; \
- } else { \
- lum = maskColor.r * 0.3 + maskColor.g * 0.59 + \
- maskColor.b * 0.11; \
- } \
- imageColor.a *= lum; \
- imageColor.rgb *= imageColor.a; \
- gl_FragColor = imageColor; \
- } ';
-
- var smaskCache = null;
-
- function initSmaskGL() {
- var canvas, gl;
-
- generateGL();
- canvas = currentCanvas;
- currentCanvas = null;
- gl = currentGL;
- currentGL = null;
-
- // setup a GLSL program
- var vertexShader = createVertexShader(gl, smaskVertexShaderCode);
- var fragmentShader = createFragmentShader(gl, smaskFragmentShaderCode);
- var program = createProgram(gl, [vertexShader, fragmentShader]);
- gl.useProgram(program);
-
- var cache = {};
- cache.gl = gl;
- cache.canvas = canvas;
- cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution');
- cache.positionLocation = gl.getAttribLocation(program, 'a_position');
- cache.backdropLocation = gl.getUniformLocation(program, 'u_backdrop');
- cache.subtypeLocation = gl.getUniformLocation(program, 'u_subtype');
-
- var texCoordLocation = gl.getAttribLocation(program, 'a_texCoord');
- var texLayerLocation = gl.getUniformLocation(program, 'u_image');
- var texMaskLocation = gl.getUniformLocation(program, 'u_mask');
-
- // provide texture coordinates for the rectangle.
- var texCoordBuffer = gl.createBuffer();
- gl.bindBuffer(gl.ARRAY_BUFFER, texCoordBuffer);
- gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
- 0.0, 0.0,
- 1.0, 0.0,
- 0.0, 1.0,
- 0.0, 1.0,
- 1.0, 0.0,
- 1.0, 1.0]), gl.STATIC_DRAW);
- gl.enableVertexAttribArray(texCoordLocation);
- gl.vertexAttribPointer(texCoordLocation, 2, gl.FLOAT, false, 0, 0);
-
- gl.uniform1i(texLayerLocation, 0);
- gl.uniform1i(texMaskLocation, 1);
-
- smaskCache = cache;
- }
-
- function composeSMask(layer, mask, properties) {
- var width = layer.width, height = layer.height;
-
- if (!smaskCache) {
- initSmaskGL();
- }
- var cache = smaskCache,canvas = cache.canvas, gl = cache.gl;
- canvas.width = width;
- canvas.height = height;
- gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
- gl.uniform2f(cache.resolutionLocation, width, height);
-
- if (properties.backdrop) {
- gl.uniform4f(cache.resolutionLocation, properties.backdrop[0],
- properties.backdrop[1], properties.backdrop[2], 1);
- } else {
- gl.uniform4f(cache.resolutionLocation, 0, 0, 0, 0);
- }
- gl.uniform1i(cache.subtypeLocation,
- properties.subtype === 'Luminosity' ? 1 : 0);
-
- // Create a textures
- var texture = createTexture(gl, layer, gl.TEXTURE0);
- var maskTexture = createTexture(gl, mask, gl.TEXTURE1);
-
-
- // Create a buffer and put a single clipspace rectangle in
- // it (2 triangles)
- var buffer = gl.createBuffer();
- gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
- gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
- 0, 0,
- width, 0,
- 0, height,
- 0, height,
- width, 0,
- width, height]), gl.STATIC_DRAW);
- gl.enableVertexAttribArray(cache.positionLocation);
- gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0);
-
- // draw
- gl.clearColor(0, 0, 0, 0);
- gl.enable(gl.BLEND);
- gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
- gl.clear(gl.COLOR_BUFFER_BIT);
-
- gl.drawArrays(gl.TRIANGLES, 0, 6);
-
- gl.flush();
-
- gl.deleteTexture(texture);
- gl.deleteTexture(maskTexture);
- gl.deleteBuffer(buffer);
-
- return canvas;
- }
-
- var figuresVertexShaderCode = '\
- attribute vec2 a_position; \
- attribute vec3 a_color; \
- \
- uniform vec2 u_resolution; \
- uniform vec2 u_scale; \
- uniform vec2 u_offset; \
- \
- varying vec4 v_color; \
- \
- void main() { \
- vec2 position = (a_position + u_offset) * u_scale; \
- vec2 clipSpace = (position / u_resolution) * 2.0 - 1.0; \
- gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1); \
- \
- v_color = vec4(a_color / 255.0, 1.0); \
- } ';
-
- var figuresFragmentShaderCode = '\
- precision mediump float; \
- \
- varying vec4 v_color; \
- \
- void main() { \
- gl_FragColor = v_color; \
- } ';
-
- var figuresCache = null;
-
- function initFiguresGL() {
- var canvas, gl;
-
- generateGL();
- canvas = currentCanvas;
- currentCanvas = null;
- gl = currentGL;
- currentGL = null;
-
- // setup a GLSL program
- var vertexShader = createVertexShader(gl, figuresVertexShaderCode);
- var fragmentShader = createFragmentShader(gl, figuresFragmentShaderCode);
- var program = createProgram(gl, [vertexShader, fragmentShader]);
- gl.useProgram(program);
-
- var cache = {};
- cache.gl = gl;
- cache.canvas = canvas;
- cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution');
- cache.scaleLocation = gl.getUniformLocation(program, 'u_scale');
- cache.offsetLocation = gl.getUniformLocation(program, 'u_offset');
- cache.positionLocation = gl.getAttribLocation(program, 'a_position');
- cache.colorLocation = gl.getAttribLocation(program, 'a_color');
-
- figuresCache = cache;
- }
-
- function drawFigures(width, height, backgroundColor, figures, context) {
- if (!figuresCache) {
- initFiguresGL();
- }
- var cache = figuresCache, canvas = cache.canvas, gl = cache.gl;
-
- canvas.width = width;
- canvas.height = height;
- gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
- gl.uniform2f(cache.resolutionLocation, width, height);
-
- // count triangle points
- var count = 0;
- var i, ii, rows;
- for (i = 0, ii = figures.length; i < ii; i++) {
- switch (figures[i].type) {
- case 'lattice':
- rows = (figures[i].coords.length / figures[i].verticesPerRow) | 0;
- count += (rows - 1) * (figures[i].verticesPerRow - 1) * 6;
- break;
- case 'triangles':
- count += figures[i].coords.length;
- break;
- }
- }
- // transfer data
- var coords = new Float32Array(count * 2);
- var colors = new Uint8Array(count * 3);
- var coordsMap = context.coords, colorsMap = context.colors;
- var pIndex = 0, cIndex = 0;
- for (i = 0, ii = figures.length; i < ii; i++) {
- var figure = figures[i], ps = figure.coords, cs = figure.colors;
- switch (figure.type) {
- case 'lattice':
- var cols = figure.verticesPerRow;
- rows = (ps.length / cols) | 0;
- for (var row = 1; row < rows; row++) {
- var offset = row * cols + 1;
- for (var col = 1; col < cols; col++, offset++) {
- coords[pIndex] = coordsMap[ps[offset - cols - 1]];
- coords[pIndex + 1] = coordsMap[ps[offset - cols - 1] + 1];
- coords[pIndex + 2] = coordsMap[ps[offset - cols]];
- coords[pIndex + 3] = coordsMap[ps[offset - cols] + 1];
- coords[pIndex + 4] = coordsMap[ps[offset - 1]];
- coords[pIndex + 5] = coordsMap[ps[offset - 1] + 1];
- colors[cIndex] = colorsMap[cs[offset - cols - 1]];
- colors[cIndex + 1] = colorsMap[cs[offset - cols - 1] + 1];
- colors[cIndex + 2] = colorsMap[cs[offset - cols - 1] + 2];
- colors[cIndex + 3] = colorsMap[cs[offset - cols]];
- colors[cIndex + 4] = colorsMap[cs[offset - cols] + 1];
- colors[cIndex + 5] = colorsMap[cs[offset - cols] + 2];
- colors[cIndex + 6] = colorsMap[cs[offset - 1]];
- colors[cIndex + 7] = colorsMap[cs[offset - 1] + 1];
- colors[cIndex + 8] = colorsMap[cs[offset - 1] + 2];
-
- coords[pIndex + 6] = coords[pIndex + 2];
- coords[pIndex + 7] = coords[pIndex + 3];
- coords[pIndex + 8] = coords[pIndex + 4];
- coords[pIndex + 9] = coords[pIndex + 5];
- coords[pIndex + 10] = coordsMap[ps[offset]];
- coords[pIndex + 11] = coordsMap[ps[offset] + 1];
- colors[cIndex + 9] = colors[cIndex + 3];
- colors[cIndex + 10] = colors[cIndex + 4];
- colors[cIndex + 11] = colors[cIndex + 5];
- colors[cIndex + 12] = colors[cIndex + 6];
- colors[cIndex + 13] = colors[cIndex + 7];
- colors[cIndex + 14] = colors[cIndex + 8];
- colors[cIndex + 15] = colorsMap[cs[offset]];
- colors[cIndex + 16] = colorsMap[cs[offset] + 1];
- colors[cIndex + 17] = colorsMap[cs[offset] + 2];
- pIndex += 12;
- cIndex += 18;
- }
- }
- break;
- case 'triangles':
- for (var j = 0, jj = ps.length; j < jj; j++) {
- coords[pIndex] = coordsMap[ps[j]];
- coords[pIndex + 1] = coordsMap[ps[j] + 1];
- colors[cIndex] = colorsMap[cs[j]];
- colors[cIndex + 1] = colorsMap[cs[j] + 1];
- colors[cIndex + 2] = colorsMap[cs[j] + 2];
- pIndex += 2;
- cIndex += 3;
- }
- break;
- }
- }
-
- // draw
- if (backgroundColor) {
- gl.clearColor(backgroundColor[0] / 255, backgroundColor[1] / 255,
- backgroundColor[2] / 255, 1.0);
- } else {
- gl.clearColor(0, 0, 0, 0);
- }
- gl.clear(gl.COLOR_BUFFER_BIT);
-
- var coordsBuffer = gl.createBuffer();
- gl.bindBuffer(gl.ARRAY_BUFFER, coordsBuffer);
- gl.bufferData(gl.ARRAY_BUFFER, coords, gl.STATIC_DRAW);
- gl.enableVertexAttribArray(cache.positionLocation);
- gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0);
-
- var colorsBuffer = gl.createBuffer();
- gl.bindBuffer(gl.ARRAY_BUFFER, colorsBuffer);
- gl.bufferData(gl.ARRAY_BUFFER, colors, gl.STATIC_DRAW);
- gl.enableVertexAttribArray(cache.colorLocation);
- gl.vertexAttribPointer(cache.colorLocation, 3, gl.UNSIGNED_BYTE, false,
- 0, 0);
-
- gl.uniform2f(cache.scaleLocation, context.scaleX, context.scaleY);
- gl.uniform2f(cache.offsetLocation, context.offsetX, context.offsetY);
-
- gl.drawArrays(gl.TRIANGLES, 0, count);
-
- gl.flush();
-
- gl.deleteBuffer(coordsBuffer);
- gl.deleteBuffer(colorsBuffer);
-
- return canvas;
- }
-
- function cleanup() {
- if (smaskCache && smaskCache.canvas) {
- smaskCache.canvas.width = 0;
- smaskCache.canvas.height = 0;
- }
- if (figuresCache && figuresCache.canvas) {
- figuresCache.canvas.width = 0;
- figuresCache.canvas.height = 0;
- }
- smaskCache = null;
- figuresCache = null;
- }
-
- return {
- get isEnabled() {
- if (getDefaultSetting('disableWebGL')) {
- return false;
- }
- var enabled = false;
- try {
- generateGL();
- enabled = !!currentGL;
- } catch (e) { }
- return shadow(this, 'isEnabled', enabled);
- },
- composeSMask: composeSMask,
- drawFigures: drawFigures,
- clear: cleanup
- };
-})();
-
-exports.WebGLUtils = WebGLUtils;
-}));
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsDisplayPatternHelper = {}), root.pdfjsSharedUtil,
- root.pdfjsDisplayWebGL);
- }
-}(this, function (exports, sharedUtil, displayWebGL) {
-
-var Util = sharedUtil.Util;
-var info = sharedUtil.info;
-var isArray = sharedUtil.isArray;
-var error = sharedUtil.error;
-var WebGLUtils = displayWebGL.WebGLUtils;
-
-var ShadingIRs = {};
-
-ShadingIRs.RadialAxial = {
- fromIR: function RadialAxial_fromIR(raw) {
- var type = raw[1];
- var colorStops = raw[2];
- var p0 = raw[3];
- var p1 = raw[4];
- var r0 = raw[5];
- var r1 = raw[6];
- return {
- type: 'Pattern',
- getPattern: function RadialAxial_getPattern(ctx) {
- var grad;
- if (type === 'axial') {
- grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]);
- } else if (type === 'radial') {
- grad = ctx.createRadialGradient(p0[0], p0[1], r0, p1[0], p1[1], r1);
- }
-
- for (var i = 0, ii = colorStops.length; i < ii; ++i) {
- var c = colorStops[i];
- grad.addColorStop(c[0], c[1]);
- }
- return grad;
- }
- };
- }
-};
-
-var createMeshCanvas = (function createMeshCanvasClosure() {
- function drawTriangle(data, context, p1, p2, p3, c1, c2, c3) {
- // Very basic Gouraud-shaded triangle rasterization algorithm.
- var coords = context.coords, colors = context.colors;
- var bytes = data.data, rowSize = data.width * 4;
- var tmp;
- if (coords[p1 + 1] > coords[p2 + 1]) {
- tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp;
- }
- if (coords[p2 + 1] > coords[p3 + 1]) {
- tmp = p2; p2 = p3; p3 = tmp; tmp = c2; c2 = c3; c3 = tmp;
- }
- if (coords[p1 + 1] > coords[p2 + 1]) {
- tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp;
- }
- var x1 = (coords[p1] + context.offsetX) * context.scaleX;
- var y1 = (coords[p1 + 1] + context.offsetY) * context.scaleY;
- var x2 = (coords[p2] + context.offsetX) * context.scaleX;
- var y2 = (coords[p2 + 1] + context.offsetY) * context.scaleY;
- var x3 = (coords[p3] + context.offsetX) * context.scaleX;
- var y3 = (coords[p3 + 1] + context.offsetY) * context.scaleY;
- if (y1 >= y3) {
- return;
- }
- var c1r = colors[c1], c1g = colors[c1 + 1], c1b = colors[c1 + 2];
- var c2r = colors[c2], c2g = colors[c2 + 1], c2b = colors[c2 + 2];
- var c3r = colors[c3], c3g = colors[c3 + 1], c3b = colors[c3 + 2];
-
- var minY = Math.round(y1), maxY = Math.round(y3);
- var xa, car, cag, cab;
- var xb, cbr, cbg, cbb;
- var k;
- for (var y = minY; y <= maxY; y++) {
- if (y < y2) {
- k = y < y1 ? 0 : y1 === y2 ? 1 : (y1 - y) / (y1 - y2);
- xa = x1 - (x1 - x2) * k;
- car = c1r - (c1r - c2r) * k;
- cag = c1g - (c1g - c2g) * k;
- cab = c1b - (c1b - c2b) * k;
- } else {
- k = y > y3 ? 1 : y2 === y3 ? 0 : (y2 - y) / (y2 - y3);
- xa = x2 - (x2 - x3) * k;
- car = c2r - (c2r - c3r) * k;
- cag = c2g - (c2g - c3g) * k;
- cab = c2b - (c2b - c3b) * k;
- }
- k = y < y1 ? 0 : y > y3 ? 1 : (y1 - y) / (y1 - y3);
- xb = x1 - (x1 - x3) * k;
- cbr = c1r - (c1r - c3r) * k;
- cbg = c1g - (c1g - c3g) * k;
- cbb = c1b - (c1b - c3b) * k;
- var x1_ = Math.round(Math.min(xa, xb));
- var x2_ = Math.round(Math.max(xa, xb));
- var j = rowSize * y + x1_ * 4;
- for (var x = x1_; x <= x2_; x++) {
- k = (xa - x) / (xa - xb);
- k = k < 0 ? 0 : k > 1 ? 1 : k;
- bytes[j++] = (car - (car - cbr) * k) | 0;
- bytes[j++] = (cag - (cag - cbg) * k) | 0;
- bytes[j++] = (cab - (cab - cbb) * k) | 0;
- bytes[j++] = 255;
- }
- }
- }
-
- function drawFigure(data, figure, context) {
- var ps = figure.coords;
- var cs = figure.colors;
- var i, ii;
- switch (figure.type) {
- case 'lattice':
- var verticesPerRow = figure.verticesPerRow;
- var rows = Math.floor(ps.length / verticesPerRow) - 1;
- var cols = verticesPerRow - 1;
- for (i = 0; i < rows; i++) {
- var q = i * verticesPerRow;
- for (var j = 0; j < cols; j++, q++) {
- drawTriangle(data, context,
- ps[q], ps[q + 1], ps[q + verticesPerRow],
- cs[q], cs[q + 1], cs[q + verticesPerRow]);
- drawTriangle(data, context,
- ps[q + verticesPerRow + 1], ps[q + 1], ps[q + verticesPerRow],
- cs[q + verticesPerRow + 1], cs[q + 1], cs[q + verticesPerRow]);
- }
- }
- break;
- case 'triangles':
- for (i = 0, ii = ps.length; i < ii; i += 3) {
- drawTriangle(data, context,
- ps[i], ps[i + 1], ps[i + 2],
- cs[i], cs[i + 1], cs[i + 2]);
- }
- break;
- default:
- error('illigal figure');
- break;
- }
- }
-
- function createMeshCanvas(bounds, combinesScale, coords, colors, figures,
- backgroundColor, cachedCanvases) {
- // we will increase scale on some weird factor to let antialiasing take
- // care of "rough" edges
- var EXPECTED_SCALE = 1.1;
- // MAX_PATTERN_SIZE is used to avoid OOM situation.
- var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough
- // We need to keep transparent border around our pattern for fill():
- // createPattern with 'no-repeat' will bleed edges across entire area.
- var BORDER_SIZE = 2;
-
- var offsetX = Math.floor(bounds[0]);
- var offsetY = Math.floor(bounds[1]);
- var boundsWidth = Math.ceil(bounds[2]) - offsetX;
- var boundsHeight = Math.ceil(bounds[3]) - offsetY;
-
- var width = Math.min(Math.ceil(Math.abs(boundsWidth * combinesScale[0] *
- EXPECTED_SCALE)), MAX_PATTERN_SIZE);
- var height = Math.min(Math.ceil(Math.abs(boundsHeight * combinesScale[1] *
- EXPECTED_SCALE)), MAX_PATTERN_SIZE);
- var scaleX = boundsWidth / width;
- var scaleY = boundsHeight / height;
-
- var context = {
- coords: coords,
- colors: colors,
- offsetX: -offsetX,
- offsetY: -offsetY,
- scaleX: 1 / scaleX,
- scaleY: 1 / scaleY
- };
-
- var paddedWidth = width + BORDER_SIZE * 2;
- var paddedHeight = height + BORDER_SIZE * 2;
-
- var canvas, tmpCanvas, i, ii;
- if (WebGLUtils.isEnabled) {
- canvas = WebGLUtils.drawFigures(width, height, backgroundColor,
- figures, context);
-
- // https://bugzilla.mozilla.org/show_bug.cgi?id=972126
- tmpCanvas = cachedCanvases.getCanvas('mesh', paddedWidth, paddedHeight,
- false);
- tmpCanvas.context.drawImage(canvas, BORDER_SIZE, BORDER_SIZE);
- canvas = tmpCanvas.canvas;
- } else {
- tmpCanvas = cachedCanvases.getCanvas('mesh', paddedWidth, paddedHeight,
- false);
- var tmpCtx = tmpCanvas.context;
-
- var data = tmpCtx.createImageData(width, height);
- if (backgroundColor) {
- var bytes = data.data;
- for (i = 0, ii = bytes.length; i < ii; i += 4) {
- bytes[i] = backgroundColor[0];
- bytes[i + 1] = backgroundColor[1];
- bytes[i + 2] = backgroundColor[2];
- bytes[i + 3] = 255;
- }
- }
- for (i = 0; i < figures.length; i++) {
- drawFigure(data, figures[i], context);
- }
- tmpCtx.putImageData(data, BORDER_SIZE, BORDER_SIZE);
- canvas = tmpCanvas.canvas;
- }
-
- return {canvas: canvas,
- offsetX: offsetX - BORDER_SIZE * scaleX,
- offsetY: offsetY - BORDER_SIZE * scaleY,
- scaleX: scaleX, scaleY: scaleY};
- }
- return createMeshCanvas;
-})();
-
-ShadingIRs.Mesh = {
- fromIR: function Mesh_fromIR(raw) {
- //var type = raw[1];
- var coords = raw[2];
- var colors = raw[3];
- var figures = raw[4];
- var bounds = raw[5];
- var matrix = raw[6];
- //var bbox = raw[7];
- var background = raw[8];
- return {
- type: 'Pattern',
- getPattern: function Mesh_getPattern(ctx, owner, shadingFill) {
- var scale;
- if (shadingFill) {
- scale = Util.singularValueDecompose2dScale(ctx.mozCurrentTransform);
- } else {
- // Obtain scale from matrix and current transformation matrix.
- scale = Util.singularValueDecompose2dScale(owner.baseTransform);
- if (matrix) {
- var matrixScale = Util.singularValueDecompose2dScale(matrix);
- scale = [scale[0] * matrixScale[0],
- scale[1] * matrixScale[1]];
- }
- }
-
-
- // Rasterizing on the main thread since sending/queue large canvases
- // might cause OOM.
- var temporaryPatternCanvas = createMeshCanvas(bounds, scale, coords,
- colors, figures, shadingFill ? null : background,
- owner.cachedCanvases);
-
- if (!shadingFill) {
- ctx.setTransform.apply(ctx, owner.baseTransform);
- if (matrix) {
- ctx.transform.apply(ctx, matrix);
- }
- }
-
- ctx.translate(temporaryPatternCanvas.offsetX,
- temporaryPatternCanvas.offsetY);
- ctx.scale(temporaryPatternCanvas.scaleX,
- temporaryPatternCanvas.scaleY);
-
- return ctx.createPattern(temporaryPatternCanvas.canvas, 'no-repeat');
- }
- };
- }
-};
-
-ShadingIRs.Dummy = {
- fromIR: function Dummy_fromIR() {
- return {
- type: 'Pattern',
- getPattern: function Dummy_fromIR_getPattern() {
- return 'hotpink';
- }
- };
- }
-};
-
-function getShadingPatternFromIR(raw) {
- var shadingIR = ShadingIRs[raw[0]];
- if (!shadingIR) {
- error('Unknown IR type: ' + raw[0]);
- }
- return shadingIR.fromIR(raw);
-}
-
-var TilingPattern = (function TilingPatternClosure() {
- var PaintType = {
- COLORED: 1,
- UNCOLORED: 2
- };
-
- var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough
-
- function TilingPattern(IR, color, ctx, canvasGraphicsFactory, baseTransform) {
- this.operatorList = IR[2];
- this.matrix = IR[3] || [1, 0, 0, 1, 0, 0];
- this.bbox = IR[4];
- this.xstep = IR[5];
- this.ystep = IR[6];
- this.paintType = IR[7];
- this.tilingType = IR[8];
- this.color = color;
- this.canvasGraphicsFactory = canvasGraphicsFactory;
- this.baseTransform = baseTransform;
- this.type = 'Pattern';
- this.ctx = ctx;
- }
-
- TilingPattern.prototype = {
- createPatternCanvas: function TilinPattern_createPatternCanvas(owner) {
- var operatorList = this.operatorList;
- var bbox = this.bbox;
- var xstep = this.xstep;
- var ystep = this.ystep;
- var paintType = this.paintType;
- var tilingType = this.tilingType;
- var color = this.color;
- var canvasGraphicsFactory = this.canvasGraphicsFactory;
-
- info('TilingType: ' + tilingType);
-
- var x0 = bbox[0], y0 = bbox[1], x1 = bbox[2], y1 = bbox[3];
-
- var topLeft = [x0, y0];
- // we want the canvas to be as large as the step size
- var botRight = [x0 + xstep, y0 + ystep];
-
- var width = botRight[0] - topLeft[0];
- var height = botRight[1] - topLeft[1];
-
- // Obtain scale from matrix and current transformation matrix.
- var matrixScale = Util.singularValueDecompose2dScale(this.matrix);
- var curMatrixScale = Util.singularValueDecompose2dScale(
- this.baseTransform);
- var combinedScale = [matrixScale[0] * curMatrixScale[0],
- matrixScale[1] * curMatrixScale[1]];
-
- // MAX_PATTERN_SIZE is used to avoid OOM situation.
- // Use width and height values that are as close as possible to the end
- // result when the pattern is used. Too low value makes the pattern look
- // blurry. Too large value makes it look too crispy.
- width = Math.min(Math.ceil(Math.abs(width * combinedScale[0])),
- MAX_PATTERN_SIZE);
-
- height = Math.min(Math.ceil(Math.abs(height * combinedScale[1])),
- MAX_PATTERN_SIZE);
-
- var tmpCanvas = owner.cachedCanvases.getCanvas('pattern',
- width, height, true);
- var tmpCtx = tmpCanvas.context;
- var graphics = canvasGraphicsFactory.createCanvasGraphics(tmpCtx);
- graphics.groupLevel = owner.groupLevel;
-
- this.setFillAndStrokeStyleToContext(tmpCtx, paintType, color);
-
- this.setScale(width, height, xstep, ystep);
- this.transformToScale(graphics);
-
- // transform coordinates to pattern space
- var tmpTranslate = [1, 0, 0, 1, -topLeft[0], -topLeft[1]];
- graphics.transform.apply(graphics, tmpTranslate);
-
- this.clipBbox(graphics, bbox, x0, y0, x1, y1);
-
- graphics.executeOperatorList(operatorList);
- return tmpCanvas.canvas;
- },
-
- setScale: function TilingPattern_setScale(width, height, xstep, ystep) {
- this.scale = [width / xstep, height / ystep];
- },
-
- transformToScale: function TilingPattern_transformToScale(graphics) {
- var scale = this.scale;
- var tmpScale = [scale[0], 0, 0, scale[1], 0, 0];
- graphics.transform.apply(graphics, tmpScale);
- },
-
- scaleToContext: function TilingPattern_scaleToContext() {
- var scale = this.scale;
- this.ctx.scale(1 / scale[0], 1 / scale[1]);
- },
-
- clipBbox: function clipBbox(graphics, bbox, x0, y0, x1, y1) {
- if (bbox && isArray(bbox) && bbox.length === 4) {
- var bboxWidth = x1 - x0;
- var bboxHeight = y1 - y0;
- graphics.ctx.rect(x0, y0, bboxWidth, bboxHeight);
- graphics.clip();
- graphics.endPath();
- }
- },
-
- setFillAndStrokeStyleToContext:
- function setFillAndStrokeStyleToContext(context, paintType, color) {
- switch (paintType) {
- case PaintType.COLORED:
- var ctx = this.ctx;
- context.fillStyle = ctx.fillStyle;
- context.strokeStyle = ctx.strokeStyle;
- break;
- case PaintType.UNCOLORED:
- var cssColor = Util.makeCssRgb(color[0], color[1], color[2]);
- context.fillStyle = cssColor;
- context.strokeStyle = cssColor;
- break;
- default:
- error('Unsupported paint type: ' + paintType);
- }
- },
-
- getPattern: function TilingPattern_getPattern(ctx, owner) {
- var temporaryPatternCanvas = this.createPatternCanvas(owner);
-
- ctx = this.ctx;
- ctx.setTransform.apply(ctx, this.baseTransform);
- ctx.transform.apply(ctx, this.matrix);
- this.scaleToContext();
-
- return ctx.createPattern(temporaryPatternCanvas, 'repeat');
- }
- };
-
- return TilingPattern;
-})();
-
-exports.getShadingPatternFromIR = getShadingPatternFromIR;
-exports.TilingPattern = TilingPattern;
-}));
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsDisplayCanvas = {}), root.pdfjsSharedUtil,
- root.pdfjsDisplayDOMUtils, root.pdfjsDisplayPatternHelper,
- root.pdfjsDisplayWebGL);
- }
-}(this, function (exports, sharedUtil, displayDOMUtils, displayPatternHelper,
- displayWebGL) {
-
-var FONT_IDENTITY_MATRIX = sharedUtil.FONT_IDENTITY_MATRIX;
-var IDENTITY_MATRIX = sharedUtil.IDENTITY_MATRIX;
-var ImageKind = sharedUtil.ImageKind;
-var OPS = sharedUtil.OPS;
-var TextRenderingMode = sharedUtil.TextRenderingMode;
-var Uint32ArrayView = sharedUtil.Uint32ArrayView;
-var Util = sharedUtil.Util;
-var assert = sharedUtil.assert;
-var info = sharedUtil.info;
-var isNum = sharedUtil.isNum;
-var isArray = sharedUtil.isArray;
-var isLittleEndian = sharedUtil.isLittleEndian;
-var error = sharedUtil.error;
-var shadow = sharedUtil.shadow;
-var warn = sharedUtil.warn;
-var TilingPattern = displayPatternHelper.TilingPattern;
-var getShadingPatternFromIR = displayPatternHelper.getShadingPatternFromIR;
-var WebGLUtils = displayWebGL.WebGLUtils;
-var hasCanvasTypedArrays = displayDOMUtils.hasCanvasTypedArrays;
-
-// <canvas> contexts store most of the state we need natively.
-// However, PDF needs a bit more state, which we store here.
-
-// Minimal font size that would be used during canvas fillText operations.
-var MIN_FONT_SIZE = 16;
-// Maximum font size that would be used during canvas fillText operations.
-var MAX_FONT_SIZE = 100;
-var MAX_GROUP_SIZE = 4096;
-
-// Heuristic value used when enforcing minimum line widths.
-var MIN_WIDTH_FACTOR = 0.65;
-
-var COMPILE_TYPE3_GLYPHS = true;
-var MAX_SIZE_TO_COMPILE = 1000;
-
-var FULL_CHUNK_HEIGHT = 16;
-
-var HasCanvasTypedArraysCached = {
- get value() {
- return shadow(HasCanvasTypedArraysCached, 'value', hasCanvasTypedArrays());
- }
-};
-
-var IsLittleEndianCached = {
- get value() {
- return shadow(IsLittleEndianCached, 'value', isLittleEndian());
- }
-};
-
-function createScratchCanvas(width, height) {
- var canvas = document.createElement('canvas');
- canvas.width = width;
- canvas.height = height;
- return canvas;
-}
-
-function addContextCurrentTransform(ctx) {
- // If the context doesn't expose a `mozCurrentTransform`, add a JS based one.
- if (!ctx.mozCurrentTransform) {
- ctx._originalSave = ctx.save;
- ctx._originalRestore = ctx.restore;
- ctx._originalRotate = ctx.rotate;
- ctx._originalScale = ctx.scale;
- ctx._originalTranslate = ctx.translate;
- ctx._originalTransform = ctx.transform;
- ctx._originalSetTransform = ctx.setTransform;
-
- ctx._transformMatrix = ctx._transformMatrix || [1, 0, 0, 1, 0, 0];
- ctx._transformStack = [];
-
- Object.defineProperty(ctx, 'mozCurrentTransform', {
- get: function getCurrentTransform() {
- return this._transformMatrix;
- }
- });
-
- Object.defineProperty(ctx, 'mozCurrentTransformInverse', {
- get: function getCurrentTransformInverse() {
- // Calculation done using WolframAlpha:
- // http://www.wolframalpha.com/input/?
- // i=Inverse+{{a%2C+c%2C+e}%2C+{b%2C+d%2C+f}%2C+{0%2C+0%2C+1}}
-
- var m = this._transformMatrix;
- var a = m[0], b = m[1], c = m[2], d = m[3], e = m[4], f = m[5];
-
- var ad_bc = a * d - b * c;
- var bc_ad = b * c - a * d;
-
- return [
- d / ad_bc,
- b / bc_ad,
- c / bc_ad,
- a / ad_bc,
- (d * e - c * f) / bc_ad,
- (b * e - a * f) / ad_bc
- ];
- }
- });
-
- ctx.save = function ctxSave() {
- var old = this._transformMatrix;
- this._transformStack.push(old);
- this._transformMatrix = old.slice(0, 6);
-
- this._originalSave();
- };
-
- ctx.restore = function ctxRestore() {
- var prev = this._transformStack.pop();
- if (prev) {
- this._transformMatrix = prev;
- this._originalRestore();
- }
- };
-
- ctx.translate = function ctxTranslate(x, y) {
- var m = this._transformMatrix;
- m[4] = m[0] * x + m[2] * y + m[4];
- m[5] = m[1] * x + m[3] * y + m[5];
-
- this._originalTranslate(x, y);
- };
-
- ctx.scale = function ctxScale(x, y) {
- var m = this._transformMatrix;
- m[0] = m[0] * x;
- m[1] = m[1] * x;
- m[2] = m[2] * y;
- m[3] = m[3] * y;
-
- this._originalScale(x, y);
- };
-
- ctx.transform = function ctxTransform(a, b, c, d, e, f) {
- var m = this._transformMatrix;
- this._transformMatrix = [
- m[0] * a + m[2] * b,
- m[1] * a + m[3] * b,
- m[0] * c + m[2] * d,
- m[1] * c + m[3] * d,
- m[0] * e + m[2] * f + m[4],
- m[1] * e + m[3] * f + m[5]
- ];
-
- ctx._originalTransform(a, b, c, d, e, f);
- };
-
- ctx.setTransform = function ctxSetTransform(a, b, c, d, e, f) {
- this._transformMatrix = [a, b, c, d, e, f];
-
- ctx._originalSetTransform(a, b, c, d, e, f);
- };
-
- ctx.rotate = function ctxRotate(angle) {
- var cosValue = Math.cos(angle);
- var sinValue = Math.sin(angle);
-
- var m = this._transformMatrix;
- this._transformMatrix = [
- m[0] * cosValue + m[2] * sinValue,
- m[1] * cosValue + m[3] * sinValue,
- m[0] * (-sinValue) + m[2] * cosValue,
- m[1] * (-sinValue) + m[3] * cosValue,
- m[4],
- m[5]
- ];
-
- this._originalRotate(angle);
- };
- }
-}
-
-var CachedCanvases = (function CachedCanvasesClosure() {
- function CachedCanvases() {
- this.cache = Object.create(null);
- }
- CachedCanvases.prototype = {
- getCanvas: function CachedCanvases_getCanvas(id, width, height,
- trackTransform) {
- var canvasEntry;
- if (this.cache[id] !== undefined) {
- canvasEntry = this.cache[id];
- canvasEntry.canvas.width = width;
- canvasEntry.canvas.height = height;
- // reset canvas transform for emulated mozCurrentTransform, if needed
- canvasEntry.context.setTransform(1, 0, 0, 1, 0, 0);
- } else {
- var canvas = createScratchCanvas(width, height);
- var ctx = canvas.getContext('2d');
- if (trackTransform) {
- addContextCurrentTransform(ctx);
- }
- this.cache[id] = canvasEntry = {canvas: canvas, context: ctx};
- }
- return canvasEntry;
- },
- clear: function () {
- for (var id in this.cache) {
- var canvasEntry = this.cache[id];
- // Zeroing the width and height causes Firefox to release graphics
- // resources immediately, which can greatly reduce memory consumption.
- canvasEntry.canvas.width = 0;
- canvasEntry.canvas.height = 0;
- delete this.cache[id];
- }
- }
- };
- return CachedCanvases;
-})();
-
-function compileType3Glyph(imgData) {
- var POINT_TO_PROCESS_LIMIT = 1000;
-
- var width = imgData.width, height = imgData.height;
- var i, j, j0, width1 = width + 1;
- var points = new Uint8Array(width1 * (height + 1));
- var POINT_TYPES =
- new Uint8Array([0, 2, 4, 0, 1, 0, 5, 4, 8, 10, 0, 8, 0, 2, 1, 0]);
-
- // decodes bit-packed mask data
- var lineSize = (width + 7) & ~7, data0 = imgData.data;
- var data = new Uint8Array(lineSize * height), pos = 0, ii;
- for (i = 0, ii = data0.length; i < ii; i++) {
- var mask = 128, elem = data0[i];
- while (mask > 0) {
- data[pos++] = (elem & mask) ? 0 : 255;
- mask >>= 1;
- }
- }
-
- // finding iteresting points: every point is located between mask pixels,
- // so there will be points of the (width + 1)x(height + 1) grid. Every point
- // will have flags assigned based on neighboring mask pixels:
- // 4 | 8
- // --P--
- // 2 | 1
- // We are interested only in points with the flags:
- // - outside corners: 1, 2, 4, 8;
- // - inside corners: 7, 11, 13, 14;
- // - and, intersections: 5, 10.
- var count = 0;
- pos = 0;
- if (data[pos] !== 0) {
- points[0] = 1;
- ++count;
- }
- for (j = 1; j < width; j++) {
- if (data[pos] !== data[pos + 1]) {
- points[j] = data[pos] ? 2 : 1;
- ++count;
- }
- pos++;
- }
- if (data[pos] !== 0) {
- points[j] = 2;
- ++count;
- }
- for (i = 1; i < height; i++) {
- pos = i * lineSize;
- j0 = i * width1;
- if (data[pos - lineSize] !== data[pos]) {
- points[j0] = data[pos] ? 1 : 8;
- ++count;
- }
- // 'sum' is the position of the current pixel configuration in the 'TYPES'
- // array (in order 8-1-2-4, so we can use '>>2' to shift the column).
- var sum = (data[pos] ? 4 : 0) + (data[pos - lineSize] ? 8 : 0);
- for (j = 1; j < width; j++) {
- sum = (sum >> 2) + (data[pos + 1] ? 4 : 0) +
- (data[pos - lineSize + 1] ? 8 : 0);
- if (POINT_TYPES[sum]) {
- points[j0 + j] = POINT_TYPES[sum];
- ++count;
- }
- pos++;
- }
- if (data[pos - lineSize] !== data[pos]) {
- points[j0 + j] = data[pos] ? 2 : 4;
- ++count;
- }
-
- if (count > POINT_TO_PROCESS_LIMIT) {
- return null;
- }
- }
-
- pos = lineSize * (height - 1);
- j0 = i * width1;
- if (data[pos] !== 0) {
- points[j0] = 8;
- ++count;
- }
- for (j = 1; j < width; j++) {
- if (data[pos] !== data[pos + 1]) {
- points[j0 + j] = data[pos] ? 4 : 8;
- ++count;
- }
- pos++;
- }
- if (data[pos] !== 0) {
- points[j0 + j] = 4;
- ++count;
- }
- if (count > POINT_TO_PROCESS_LIMIT) {
- return null;
- }
-
- // building outlines
- var steps = new Int32Array([0, width1, -1, 0, -width1, 0, 0, 0, 1]);
- var outlines = [];
- for (i = 0; count && i <= height; i++) {
- var p = i * width1;
- var end = p + width;
- while (p < end && !points[p]) {
- p++;
- }
- if (p === end) {
- continue;
- }
- var coords = [p % width1, i];
-
- var type = points[p], p0 = p, pp;
- do {
- var step = steps[type];
- do {
- p += step;
- } while (!points[p]);
-
- pp = points[p];
- if (pp !== 5 && pp !== 10) {
- // set new direction
- type = pp;
- // delete mark
- points[p] = 0;
- } else { // type is 5 or 10, ie, a crossing
- // set new direction
- type = pp & ((0x33 * type) >> 4);
- // set new type for "future hit"
- points[p] &= (type >> 2 | type << 2);
- }
-
- coords.push(p % width1);
- coords.push((p / width1) | 0);
- --count;
- } while (p0 !== p);
- outlines.push(coords);
- --i;
- }
-
- var drawOutline = function(c) {
- c.save();
- // the path shall be painted in [0..1]x[0..1] space
- c.scale(1 / width, -1 / height);
- c.translate(0, -height);
- c.beginPath();
- for (var i = 0, ii = outlines.length; i < ii; i++) {
- var o = outlines[i];
- c.moveTo(o[0], o[1]);
- for (var j = 2, jj = o.length; j < jj; j += 2) {
- c.lineTo(o[j], o[j+1]);
- }
- }
- c.fill();
- c.beginPath();
- c.restore();
- };
-
- return drawOutline;
-}
-
-var CanvasExtraState = (function CanvasExtraStateClosure() {
- function CanvasExtraState(old) {
- // Are soft masks and alpha values shapes or opacities?
- this.alphaIsShape = false;
- this.fontSize = 0;
- this.fontSizeScale = 1;
- this.textMatrix = IDENTITY_MATRIX;
- this.textMatrixScale = 1;
- this.fontMatrix = FONT_IDENTITY_MATRIX;
- this.leading = 0;
- // Current point (in user coordinates)
- this.x = 0;
- this.y = 0;
- // Start of text line (in text coordinates)
- this.lineX = 0;
- this.lineY = 0;
- // Character and word spacing
- this.charSpacing = 0;
- this.wordSpacing = 0;
- this.textHScale = 1;
- this.textRenderingMode = TextRenderingMode.FILL;
- this.textRise = 0;
- // Default fore and background colors
- this.fillColor = '#000000';
- this.strokeColor = '#000000';
- this.patternFill = false;
- // Note: fill alpha applies to all non-stroking operations
- this.fillAlpha = 1;
- this.strokeAlpha = 1;
- this.lineWidth = 1;
- this.activeSMask = null;
- this.resumeSMaskCtx = null; // nonclonable field (see the save method below)
-
- this.old = old;
- }
-
- CanvasExtraState.prototype = {
- clone: function CanvasExtraState_clone() {
- return Object.create(this);
- },
- setCurrentPoint: function CanvasExtraState_setCurrentPoint(x, y) {
- this.x = x;
- this.y = y;
- }
- };
- return CanvasExtraState;
-})();
-
-var CanvasGraphics = (function CanvasGraphicsClosure() {
- // Defines the time the executeOperatorList is going to be executing
- // before it stops and shedules a continue of execution.
- var EXECUTION_TIME = 15;
- // Defines the number of steps before checking the execution time
- var EXECUTION_STEPS = 10;
-
- function CanvasGraphics(canvasCtx, commonObjs, objs, imageLayer) {
- this.ctx = canvasCtx;
- this.current = new CanvasExtraState();
- this.stateStack = [];
- this.pendingClip = null;
- this.pendingEOFill = false;
- this.res = null;
- this.xobjs = null;
- this.commonObjs = commonObjs;
- this.objs = objs;
- this.imageLayer = imageLayer;
- this.groupStack = [];
- this.processingType3 = null;
- // Patterns are painted relative to the initial page/form transform, see pdf
- // spec 8.7.2 NOTE 1.
- this.baseTransform = null;
- this.baseTransformStack = [];
- this.groupLevel = 0;
- this.smaskStack = [];
- this.smaskCounter = 0;
- this.tempSMask = null;
- this.cachedCanvases = new CachedCanvases();
- if (canvasCtx) {
- // NOTE: if mozCurrentTransform is polyfilled, then the current state of
- // the transformation must already be set in canvasCtx._transformMatrix.
- addContextCurrentTransform(canvasCtx);
- }
- this.cachedGetSinglePixelWidth = null;
- }
-
- function putBinaryImageData(ctx, imgData) {
- if (typeof ImageData !== 'undefined' && imgData instanceof ImageData) {
- ctx.putImageData(imgData, 0, 0);
- return;
- }
-
- // Put the image data to the canvas in chunks, rather than putting the
- // whole image at once. This saves JS memory, because the ImageData object
- // is smaller. It also possibly saves C++ memory within the implementation
- // of putImageData(). (E.g. in Firefox we make two short-lived copies of
- // the data passed to putImageData()). |n| shouldn't be too small, however,
- // because too many putImageData() calls will slow things down.
- //
- // Note: as written, if the last chunk is partial, the putImageData() call
- // will (conceptually) put pixels past the bounds of the canvas. But
- // that's ok; any such pixels are ignored.
-
- var height = imgData.height, width = imgData.width;
- var partialChunkHeight = height % FULL_CHUNK_HEIGHT;
- var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT;
- var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1;
-
- var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT);
- var srcPos = 0, destPos;
- var src = imgData.data;
- var dest = chunkImgData.data;
- var i, j, thisChunkHeight, elemsInThisChunk;
-
- // There are multiple forms in which the pixel data can be passed, and
- // imgData.kind tells us which one this is.
- if (imgData.kind === ImageKind.GRAYSCALE_1BPP) {
- // Grayscale, 1 bit per pixel (i.e. black-and-white).
- var srcLength = src.byteLength;
- var dest32 = HasCanvasTypedArraysCached.value ?
- new Uint32Array(dest.buffer) : new Uint32ArrayView(dest);
- var dest32DataLength = dest32.length;
- var fullSrcDiff = (width + 7) >> 3;
- var white = 0xFFFFFFFF;
- var black = (IsLittleEndianCached.value ||
- !HasCanvasTypedArraysCached.value) ? 0xFF000000 : 0x000000FF;
- for (i = 0; i < totalChunks; i++) {
- thisChunkHeight =
- (i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight;
- destPos = 0;
- for (j = 0; j < thisChunkHeight; j++) {
- var srcDiff = srcLength - srcPos;
- var k = 0;
- var kEnd = (srcDiff > fullSrcDiff) ? width : srcDiff * 8 - 7;
- var kEndUnrolled = kEnd & ~7;
- var mask = 0;
- var srcByte = 0;
- for (; k < kEndUnrolled; k += 8) {
- srcByte = src[srcPos++];
- dest32[destPos++] = (srcByte & 128) ? white : black;
- dest32[destPos++] = (srcByte & 64) ? white : black;
- dest32[destPos++] = (srcByte & 32) ? white : black;
- dest32[destPos++] = (srcByte & 16) ? white : black;
- dest32[destPos++] = (srcByte & 8) ? white : black;
- dest32[destPos++] = (srcByte & 4) ? white : black;
- dest32[destPos++] = (srcByte & 2) ? white : black;
- dest32[destPos++] = (srcByte & 1) ? white : black;
- }
- for (; k < kEnd; k++) {
- if (mask === 0) {
- srcByte = src[srcPos++];
- mask = 128;
- }
-
- dest32[destPos++] = (srcByte & mask) ? white : black;
- mask >>= 1;
- }
- }
- // We ran out of input. Make all remaining pixels transparent.
- while (destPos < dest32DataLength) {
- dest32[destPos++] = 0;
- }
-
- ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
- }
- } else if (imgData.kind === ImageKind.RGBA_32BPP) {
- // RGBA, 32-bits per pixel.
-
- j = 0;
- elemsInThisChunk = width * FULL_CHUNK_HEIGHT * 4;
- for (i = 0; i < fullChunks; i++) {
- dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
- srcPos += elemsInThisChunk;
-
- ctx.putImageData(chunkImgData, 0, j);
- j += FULL_CHUNK_HEIGHT;
- }
- if (i < totalChunks) {
- elemsInThisChunk = width * partialChunkHeight * 4;
- dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
- ctx.putImageData(chunkImgData, 0, j);
- }
-
- } else if (imgData.kind === ImageKind.RGB_24BPP) {
- // RGB, 24-bits per pixel.
- thisChunkHeight = FULL_CHUNK_HEIGHT;
- elemsInThisChunk = width * thisChunkHeight;
- for (i = 0; i < totalChunks; i++) {
- if (i >= fullChunks) {
- thisChunkHeight = partialChunkHeight;
- elemsInThisChunk = width * thisChunkHeight;
- }
-
- destPos = 0;
- for (j = elemsInThisChunk; j--;) {
- dest[destPos++] = src[srcPos++];
- dest[destPos++] = src[srcPos++];
- dest[destPos++] = src[srcPos++];
- dest[destPos++] = 255;
- }
- ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
- }
- } else {
- error('bad image kind: ' + imgData.kind);
- }
- }
-
- function putBinaryImageMask(ctx, imgData) {
- var height = imgData.height, width = imgData.width;
- var partialChunkHeight = height % FULL_CHUNK_HEIGHT;
- var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT;
- var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1;
-
- var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT);
- var srcPos = 0;
- var src = imgData.data;
- var dest = chunkImgData.data;
-
- for (var i = 0; i < totalChunks; i++) {
- var thisChunkHeight =
- (i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight;
-
- // Expand the mask so it can be used by the canvas. Any required
- // inversion has already been handled.
- var destPos = 3; // alpha component offset
- for (var j = 0; j < thisChunkHeight; j++) {
- var mask = 0;
- for (var k = 0; k < width; k++) {
- if (!mask) {
- var elem = src[srcPos++];
- mask = 128;
- }
- dest[destPos] = (elem & mask) ? 0 : 255;
- destPos += 4;
- mask >>= 1;
- }
- }
- ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
- }
- }
-
- function copyCtxState(sourceCtx, destCtx) {
- var properties = ['strokeStyle', 'fillStyle', 'fillRule', 'globalAlpha',
- 'lineWidth', 'lineCap', 'lineJoin', 'miterLimit',
- 'globalCompositeOperation', 'font'];
- for (var i = 0, ii = properties.length; i < ii; i++) {
- var property = properties[i];
- if (sourceCtx[property] !== undefined) {
- destCtx[property] = sourceCtx[property];
- }
- }
- if (sourceCtx.setLineDash !== undefined) {
- destCtx.setLineDash(sourceCtx.getLineDash());
- destCtx.lineDashOffset = sourceCtx.lineDashOffset;
- }
- }
-
- function composeSMaskBackdrop(bytes, r0, g0, b0) {
- var length = bytes.length;
- for (var i = 3; i < length; i += 4) {
- var alpha = bytes[i];
- if (alpha === 0) {
- bytes[i - 3] = r0;
- bytes[i - 2] = g0;
- bytes[i - 1] = b0;
- } else if (alpha < 255) {
- var alpha_ = 255 - alpha;
- bytes[i - 3] = (bytes[i - 3] * alpha + r0 * alpha_) >> 8;
- bytes[i - 2] = (bytes[i - 2] * alpha + g0 * alpha_) >> 8;
- bytes[i - 1] = (bytes[i - 1] * alpha + b0 * alpha_) >> 8;
- }
- }
- }
-
- function composeSMaskAlpha(maskData, layerData, transferMap) {
- var length = maskData.length;
- var scale = 1 / 255;
- for (var i = 3; i < length; i += 4) {
- var alpha = transferMap ? transferMap[maskData[i]] : maskData[i];
- layerData[i] = (layerData[i] * alpha * scale) | 0;
- }
- }
-
- function composeSMaskLuminosity(maskData, layerData, transferMap) {
- var length = maskData.length;
- for (var i = 3; i < length; i += 4) {
- var y = (maskData[i - 3] * 77) + // * 0.3 / 255 * 0x10000
- (maskData[i - 2] * 152) + // * 0.59 ....
- (maskData[i - 1] * 28); // * 0.11 ....
- layerData[i] = transferMap ?
- (layerData[i] * transferMap[y >> 8]) >> 8 :
- (layerData[i] * y) >> 16;
- }
- }
-
- function genericComposeSMask(maskCtx, layerCtx, width, height,
- subtype, backdrop, transferMap) {
- var hasBackdrop = !!backdrop;
- var r0 = hasBackdrop ? backdrop[0] : 0;
- var g0 = hasBackdrop ? backdrop[1] : 0;
- var b0 = hasBackdrop ? backdrop[2] : 0;
-
- var composeFn;
- if (subtype === 'Luminosity') {
- composeFn = composeSMaskLuminosity;
- } else {
- composeFn = composeSMaskAlpha;
- }
-
- // processing image in chunks to save memory
- var PIXELS_TO_PROCESS = 1048576;
- var chunkSize = Math.min(height, Math.ceil(PIXELS_TO_PROCESS / width));
- for (var row = 0; row < height; row += chunkSize) {
- var chunkHeight = Math.min(chunkSize, height - row);
- var maskData = maskCtx.getImageData(0, row, width, chunkHeight);
- var layerData = layerCtx.getImageData(0, row, width, chunkHeight);
-
- if (hasBackdrop) {
- composeSMaskBackdrop(maskData.data, r0, g0, b0);
- }
- composeFn(maskData.data, layerData.data, transferMap);
-
- maskCtx.putImageData(layerData, 0, row);
- }
- }
-
- function composeSMask(ctx, smask, layerCtx) {
- var mask = smask.canvas;
- var maskCtx = smask.context;
-
- ctx.setTransform(smask.scaleX, 0, 0, smask.scaleY,
- smask.offsetX, smask.offsetY);
-
- var backdrop = smask.backdrop || null;
- if (!smask.transferMap && WebGLUtils.isEnabled) {
- var composed = WebGLUtils.composeSMask(layerCtx.canvas, mask,
- {subtype: smask.subtype, backdrop: backdrop});
- ctx.setTransform(1, 0, 0, 1, 0, 0);
- ctx.drawImage(composed, smask.offsetX, smask.offsetY);
- return;
- }
- genericComposeSMask(maskCtx, layerCtx, mask.width, mask.height,
- smask.subtype, backdrop, smask.transferMap);
- ctx.drawImage(mask, 0, 0);
- }
-
- var LINE_CAP_STYLES = ['butt', 'round', 'square'];
- var LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];
- var NORMAL_CLIP = {};
- var EO_CLIP = {};
-
- CanvasGraphics.prototype = {
-
- beginDrawing: function CanvasGraphics_beginDrawing(transform, viewport,
- transparency) {
- // For pdfs that use blend modes we have to clear the canvas else certain
- // blend modes can look wrong since we'd be blending with a white
- // backdrop. The problem with a transparent backdrop though is we then
- // don't get sub pixel anti aliasing on text, creating temporary
- // transparent canvas when we have blend modes.
- var width = this.ctx.canvas.width;
- var height = this.ctx.canvas.height;
-
- this.ctx.save();
- this.ctx.fillStyle = 'rgb(255, 255, 255)';
- this.ctx.fillRect(0, 0, width, height);
- this.ctx.restore();
-
- if (transparency) {
- var transparentCanvas = this.cachedCanvases.getCanvas(
- 'transparent', width, height, true);
- this.compositeCtx = this.ctx;
- this.transparentCanvas = transparentCanvas.canvas;
- this.ctx = transparentCanvas.context;
- this.ctx.save();
- // The transform can be applied before rendering, transferring it to
- // the new canvas.
- this.ctx.transform.apply(this.ctx,
- this.compositeCtx.mozCurrentTransform);
- }
-
- this.ctx.save();
- if (transform) {
- this.ctx.transform.apply(this.ctx, transform);
- }
- this.ctx.transform.apply(this.ctx, viewport.transform);
-
- this.baseTransform = this.ctx.mozCurrentTransform.slice();
-
- if (this.imageLayer) {
- this.imageLayer.beginLayout();
- }
- },
-
- executeOperatorList: function CanvasGraphics_executeOperatorList(
- operatorList,
- executionStartIdx, continueCallback,
- stepper) {
- var argsArray = operatorList.argsArray;
- var fnArray = operatorList.fnArray;
- var i = executionStartIdx || 0;
- var argsArrayLen = argsArray.length;
-
- // Sometimes the OperatorList to execute is empty.
- if (argsArrayLen === i) {
- return i;
- }
-
- var chunkOperations = (argsArrayLen - i > EXECUTION_STEPS &&
- typeof continueCallback === 'function');
- var endTime = chunkOperations ? Date.now() + EXECUTION_TIME : 0;
- var steps = 0;
-
- var commonObjs = this.commonObjs;
- var objs = this.objs;
- var fnId;
-
- while (true) {
- if (stepper !== undefined && i === stepper.nextBreakPoint) {
- stepper.breakIt(i, continueCallback);
- return i;
- }
-
- fnId = fnArray[i];
-
- if (fnId !== OPS.dependency) {
- this[fnId].apply(this, argsArray[i]);
- } else {
- var deps = argsArray[i];
- for (var n = 0, nn = deps.length; n < nn; n++) {
- var depObjId = deps[n];
- var common = depObjId[0] === 'g' && depObjId[1] === '_';
- var objsPool = common ? commonObjs : objs;
-
- // If the promise isn't resolved yet, add the continueCallback
- // to the promise and bail out.
- if (!objsPool.isResolved(depObjId)) {
- objsPool.get(depObjId, continueCallback);
- return i;
- }
- }
- }
-
- i++;
-
- // If the entire operatorList was executed, stop as were done.
- if (i === argsArrayLen) {
- return i;
- }
-
- // If the execution took longer then a certain amount of time and
- // `continueCallback` is specified, interrupt the execution.
- if (chunkOperations && ++steps > EXECUTION_STEPS) {
- if (Date.now() > endTime) {
- continueCallback();
- return i;
- }
- steps = 0;
- }
-
- // If the operatorList isn't executed completely yet OR the execution
- // time was short enough, do another execution round.
- }
- },
-
- endDrawing: function CanvasGraphics_endDrawing() {
- // Finishing all opened operations such as SMask group painting.
- if (this.current.activeSMask !== null) {
- this.endSMaskGroup();
- }
-
- this.ctx.restore();
-
- if (this.transparentCanvas) {
- this.ctx = this.compositeCtx;
- this.ctx.save();
- this.ctx.setTransform(1, 0, 0, 1, 0, 0); // Avoid apply transform twice
- this.ctx.drawImage(this.transparentCanvas, 0, 0);
- this.ctx.restore();
- this.transparentCanvas = null;
- }
-
- this.cachedCanvases.clear();
- WebGLUtils.clear();
-
- if (this.imageLayer) {
- this.imageLayer.endLayout();
- }
- },
-
- // Graphics state
- setLineWidth: function CanvasGraphics_setLineWidth(width) {
- this.current.lineWidth = width;
- this.ctx.lineWidth = width;
- },
- setLineCap: function CanvasGraphics_setLineCap(style) {
- this.ctx.lineCap = LINE_CAP_STYLES[style];
- },
- setLineJoin: function CanvasGraphics_setLineJoin(style) {
- this.ctx.lineJoin = LINE_JOIN_STYLES[style];
- },
- setMiterLimit: function CanvasGraphics_setMiterLimit(limit) {
- this.ctx.miterLimit = limit;
- },
- setDash: function CanvasGraphics_setDash(dashArray, dashPhase) {
- var ctx = this.ctx;
- if (ctx.setLineDash !== undefined) {
- ctx.setLineDash(dashArray);
- ctx.lineDashOffset = dashPhase;
- }
- },
- setRenderingIntent: function CanvasGraphics_setRenderingIntent(intent) {
- // Maybe if we one day fully support color spaces this will be important
- // for now we can ignore.
- // TODO set rendering intent?
- },
- setFlatness: function CanvasGraphics_setFlatness(flatness) {
- // There's no way to control this with canvas, but we can safely ignore.
- // TODO set flatness?
- },
- setGState: function CanvasGraphics_setGState(states) {
- for (var i = 0, ii = states.length; i < ii; i++) {
- var state = states[i];
- var key = state[0];
- var value = state[1];
-
- switch (key) {
- case 'LW':
- this.setLineWidth(value);
- break;
- case 'LC':
- this.setLineCap(value);
- break;
- case 'LJ':
- this.setLineJoin(value);
- break;
- case 'ML':
- this.setMiterLimit(value);
- break;
- case 'D':
- this.setDash(value[0], value[1]);
- break;
- case 'RI':
- this.setRenderingIntent(value);
- break;
- case 'FL':
- this.setFlatness(value);
- break;
- case 'Font':
- this.setFont(value[0], value[1]);
- break;
- case 'CA':
- this.current.strokeAlpha = state[1];
- break;
- case 'ca':
- this.current.fillAlpha = state[1];
- this.ctx.globalAlpha = state[1];
- break;
- case 'BM':
- if (value && value.name && (value.name !== 'Normal')) {
- var mode = value.name.replace(/([A-Z])/g,
- function(c) {
- return '-' + c.toLowerCase();
- }
- ).substring(1);
- this.ctx.globalCompositeOperation = mode;
- if (this.ctx.globalCompositeOperation !== mode) {
- warn('globalCompositeOperation "' + mode +
- '" is not supported');
- }
- } else {
- this.ctx.globalCompositeOperation = 'source-over';
- }
- break;
- case 'SMask':
- if (this.current.activeSMask) {
- // If SMask is currrenly used, it needs to be suspended or
- // finished. Suspend only makes sense when at least one save()
- // was performed and state needs to be reverted on restore().
- if (this.stateStack.length > 0 &&
- (this.stateStack[this.stateStack.length - 1].activeSMask ===
- this.current.activeSMask)) {
- this.suspendSMaskGroup();
- } else {
- this.endSMaskGroup();
- }
- }
- this.current.activeSMask = value ? this.tempSMask : null;
- if (this.current.activeSMask) {
- this.beginSMaskGroup();
- }
- this.tempSMask = null;
- break;
- }
- }
- },
- beginSMaskGroup: function CanvasGraphics_beginSMaskGroup() {
-
- var activeSMask = this.current.activeSMask;
- var drawnWidth = activeSMask.canvas.width;
- var drawnHeight = activeSMask.canvas.height;
- var cacheId = 'smaskGroupAt' + this.groupLevel;
- var scratchCanvas = this.cachedCanvases.getCanvas(
- cacheId, drawnWidth, drawnHeight, true);
-
- var currentCtx = this.ctx;
- var currentTransform = currentCtx.mozCurrentTransform;
- this.ctx.save();
-
- var groupCtx = scratchCanvas.context;
- groupCtx.scale(1 / activeSMask.scaleX, 1 / activeSMask.scaleY);
- groupCtx.translate(-activeSMask.offsetX, -activeSMask.offsetY);
- groupCtx.transform.apply(groupCtx, currentTransform);
-
- activeSMask.startTransformInverse = groupCtx.mozCurrentTransformInverse;
-
- copyCtxState(currentCtx, groupCtx);
- this.ctx = groupCtx;
- this.setGState([
- ['BM', 'Normal'],
- ['ca', 1],
- ['CA', 1]
- ]);
- this.groupStack.push(currentCtx);
- this.groupLevel++;
- },
- suspendSMaskGroup: function CanvasGraphics_endSMaskGroup() {
- // Similar to endSMaskGroup, the intermediate canvas has to be composed
- // and future ctx state restored.
- var groupCtx = this.ctx;
- this.groupLevel--;
- this.ctx = this.groupStack.pop();
-
- composeSMask(this.ctx, this.current.activeSMask, groupCtx);
- this.ctx.restore();
- this.ctx.save(); // save is needed since SMask will be resumed.
- copyCtxState(groupCtx, this.ctx);
-
- // Saving state for resuming.
- this.current.resumeSMaskCtx = groupCtx;
- // Transform was changed in the SMask canvas, reflecting this change on
- // this.ctx.
- var deltaTransform = Util.transform(
- this.current.activeSMask.startTransformInverse,
- groupCtx.mozCurrentTransform);
- this.ctx.transform.apply(this.ctx, deltaTransform);
-
- // SMask was composed, the results at the groupCtx can be cleared.
- groupCtx.save();
- groupCtx.setTransform(1, 0, 0, 1, 0, 0);
- groupCtx.clearRect(0, 0, groupCtx.canvas.width, groupCtx.canvas.height);
- groupCtx.restore();
- },
- resumeSMaskGroup: function CanvasGraphics_endSMaskGroup() {
- // Resuming state saved by suspendSMaskGroup. We don't need to restore
- // any groupCtx state since restore() command (the only caller) will do
- // that for us. See also beginSMaskGroup.
- var groupCtx = this.current.resumeSMaskCtx;
- var currentCtx = this.ctx;
- this.ctx = groupCtx;
- this.groupStack.push(currentCtx);
- this.groupLevel++;
- },
- endSMaskGroup: function CanvasGraphics_endSMaskGroup() {
- var groupCtx = this.ctx;
- this.groupLevel--;
- this.ctx = this.groupStack.pop();
-
- composeSMask(this.ctx, this.current.activeSMask, groupCtx);
- this.ctx.restore();
- copyCtxState(groupCtx, this.ctx);
- // Transform was changed in the SMask canvas, reflecting this change on
- // this.ctx.
- var deltaTransform = Util.transform(
- this.current.activeSMask.startTransformInverse,
- groupCtx.mozCurrentTransform);
- this.ctx.transform.apply(this.ctx, deltaTransform);
- },
- save: function CanvasGraphics_save() {
- this.ctx.save();
- var old = this.current;
- this.stateStack.push(old);
- this.current = old.clone();
- this.current.resumeSMaskCtx = null;
- },
- restore: function CanvasGraphics_restore() {
- // SMask was suspended, we just need to resume it.
- if (this.current.resumeSMaskCtx) {
- this.resumeSMaskGroup();
- }
- // SMask has to be finished once there is no states that are using the
- // same SMask.
- if (this.current.activeSMask !== null && (this.stateStack.length === 0 ||
- this.stateStack[this.stateStack.length - 1].activeSMask !==
- this.current.activeSMask)) {
- this.endSMaskGroup();
- }
-
- if (this.stateStack.length !== 0) {
- this.current = this.stateStack.pop();
- this.ctx.restore();
-
- // Ensure that the clipping path is reset (fixes issue6413.pdf).
- this.pendingClip = null;
-
- this.cachedGetSinglePixelWidth = null;
- }
- },
- transform: function CanvasGraphics_transform(a, b, c, d, e, f) {
- this.ctx.transform(a, b, c, d, e, f);
-
- this.cachedGetSinglePixelWidth = null;
- },
-
- // Path
- constructPath: function CanvasGraphics_constructPath(ops, args) {
- var ctx = this.ctx;
- var current = this.current;
- var x = current.x, y = current.y;
- for (var i = 0, j = 0, ii = ops.length; i < ii; i++) {
- switch (ops[i] | 0) {
- case OPS.rectangle:
- x = args[j++];
- y = args[j++];
- var width = args[j++];
- var height = args[j++];
- if (width === 0) {
- width = this.getSinglePixelWidth();
- }
- if (height === 0) {
- height = this.getSinglePixelWidth();
- }
- var xw = x + width;
- var yh = y + height;
- this.ctx.moveTo(x, y);
- this.ctx.lineTo(xw, y);
- this.ctx.lineTo(xw, yh);
- this.ctx.lineTo(x, yh);
- this.ctx.lineTo(x, y);
- this.ctx.closePath();
- break;
- case OPS.moveTo:
- x = args[j++];
- y = args[j++];
- ctx.moveTo(x, y);
- break;
- case OPS.lineTo:
- x = args[j++];
- y = args[j++];
- ctx.lineTo(x, y);
- break;
- case OPS.curveTo:
- x = args[j + 4];
- y = args[j + 5];
- ctx.bezierCurveTo(args[j], args[j + 1], args[j + 2], args[j + 3],
- x, y);
- j += 6;
- break;
- case OPS.curveTo2:
- ctx.bezierCurveTo(x, y, args[j], args[j + 1],
- args[j + 2], args[j + 3]);
- x = args[j + 2];
- y = args[j + 3];
- j += 4;
- break;
- case OPS.curveTo3:
- x = args[j + 2];
- y = args[j + 3];
- ctx.bezierCurveTo(args[j], args[j + 1], x, y, x, y);
- j += 4;
- break;
- case OPS.closePath:
- ctx.closePath();
- break;
- }
- }
- current.setCurrentPoint(x, y);
- },
- closePath: function CanvasGraphics_closePath() {
- this.ctx.closePath();
- },
- stroke: function CanvasGraphics_stroke(consumePath) {
- consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
- var ctx = this.ctx;
- var strokeColor = this.current.strokeColor;
- // Prevent drawing too thin lines by enforcing a minimum line width.
- ctx.lineWidth = Math.max(this.getSinglePixelWidth() * MIN_WIDTH_FACTOR,
- this.current.lineWidth);
- // For stroke we want to temporarily change the global alpha to the
- // stroking alpha.
- ctx.globalAlpha = this.current.strokeAlpha;
- if (strokeColor && strokeColor.hasOwnProperty('type') &&
- strokeColor.type === 'Pattern') {
- // for patterns, we transform to pattern space, calculate
- // the pattern, call stroke, and restore to user space
- ctx.save();
- ctx.strokeStyle = strokeColor.getPattern(ctx, this);
- ctx.stroke();
- ctx.restore();
- } else {
- ctx.stroke();
- }
- if (consumePath) {
- this.consumePath();
- }
- // Restore the global alpha to the fill alpha
- ctx.globalAlpha = this.current.fillAlpha;
- },
- closeStroke: function CanvasGraphics_closeStroke() {
- this.closePath();
- this.stroke();
- },
- fill: function CanvasGraphics_fill(consumePath) {
- consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
- var ctx = this.ctx;
- var fillColor = this.current.fillColor;
- var isPatternFill = this.current.patternFill;
- var needRestore = false;
-
- if (isPatternFill) {
- ctx.save();
- if (this.baseTransform) {
- ctx.setTransform.apply(ctx, this.baseTransform);
- }
- ctx.fillStyle = fillColor.getPattern(ctx, this);
- needRestore = true;
- }
-
- if (this.pendingEOFill) {
- if (ctx.mozFillRule !== undefined) {
- ctx.mozFillRule = 'evenodd';
- ctx.fill();
- ctx.mozFillRule = 'nonzero';
- } else {
- ctx.fill('evenodd');
- }
- this.pendingEOFill = false;
- } else {
- ctx.fill();
- }
-
- if (needRestore) {
- ctx.restore();
- }
- if (consumePath) {
- this.consumePath();
- }
- },
- eoFill: function CanvasGraphics_eoFill() {
- this.pendingEOFill = true;
- this.fill();
- },
- fillStroke: function CanvasGraphics_fillStroke() {
- this.fill(false);
- this.stroke(false);
-
- this.consumePath();
- },
- eoFillStroke: function CanvasGraphics_eoFillStroke() {
- this.pendingEOFill = true;
- this.fillStroke();
- },
- closeFillStroke: function CanvasGraphics_closeFillStroke() {
- this.closePath();
- this.fillStroke();
- },
- closeEOFillStroke: function CanvasGraphics_closeEOFillStroke() {
- this.pendingEOFill = true;
- this.closePath();
- this.fillStroke();
- },
- endPath: function CanvasGraphics_endPath() {
- this.consumePath();
- },
-
- // Clipping
- clip: function CanvasGraphics_clip() {
- this.pendingClip = NORMAL_CLIP;
- },
- eoClip: function CanvasGraphics_eoClip() {
- this.pendingClip = EO_CLIP;
- },
-
- // Text
- beginText: function CanvasGraphics_beginText() {
- this.current.textMatrix = IDENTITY_MATRIX;
- this.current.textMatrixScale = 1;
- this.current.x = this.current.lineX = 0;
- this.current.y = this.current.lineY = 0;
- },
- endText: function CanvasGraphics_endText() {
- var paths = this.pendingTextPaths;
- var ctx = this.ctx;
- if (paths === undefined) {
- ctx.beginPath();
- return;
- }
-
- ctx.save();
- ctx.beginPath();
- for (var i = 0; i < paths.length; i++) {
- var path = paths[i];
- ctx.setTransform.apply(ctx, path.transform);
- ctx.translate(path.x, path.y);
- path.addToPath(ctx, path.fontSize);
- }
- ctx.restore();
- ctx.clip();
- ctx.beginPath();
- delete this.pendingTextPaths;
- },
- setCharSpacing: function CanvasGraphics_setCharSpacing(spacing) {
- this.current.charSpacing = spacing;
- },
- setWordSpacing: function CanvasGraphics_setWordSpacing(spacing) {
- this.current.wordSpacing = spacing;
- },
- setHScale: function CanvasGraphics_setHScale(scale) {
- this.current.textHScale = scale / 100;
- },
- setLeading: function CanvasGraphics_setLeading(leading) {
- this.current.leading = -leading;
- },
- setFont: function CanvasGraphics_setFont(fontRefName, size) {
- var fontObj = this.commonObjs.get(fontRefName);
- var current = this.current;
-
- if (!fontObj) {
- error('Can\'t find font for ' + fontRefName);
- }
-
- current.fontMatrix = (fontObj.fontMatrix ?
- fontObj.fontMatrix : FONT_IDENTITY_MATRIX);
-
- // A valid matrix needs all main diagonal elements to be non-zero
- // This also ensures we bypass FF bugzilla bug #719844.
- if (current.fontMatrix[0] === 0 ||
- current.fontMatrix[3] === 0) {
- warn('Invalid font matrix for font ' + fontRefName);
- }
-
- // The spec for Tf (setFont) says that 'size' specifies the font 'scale',
- // and in some docs this can be negative (inverted x-y axes).
- if (size < 0) {
- size = -size;
- current.fontDirection = -1;
- } else {
- current.fontDirection = 1;
- }
-
- this.current.font = fontObj;
- this.current.fontSize = size;
-
- if (fontObj.isType3Font) {
- return; // we don't need ctx.font for Type3 fonts
- }
-
- var name = fontObj.loadedName || 'sans-serif';
- var bold = fontObj.black ? (fontObj.bold ? '900' : 'bold') :
- (fontObj.bold ? 'bold' : 'normal');
-
- var italic = fontObj.italic ? 'italic' : 'normal';
- var typeface = '"' + name + '", ' + fontObj.fallbackName;
-
- // Some font backends cannot handle fonts below certain size.
- // Keeping the font at minimal size and using the fontSizeScale to change
- // the current transformation matrix before the fillText/strokeText.
- // See https://bugzilla.mozilla.org/show_bug.cgi?id=726227
- var browserFontSize = size < MIN_FONT_SIZE ? MIN_FONT_SIZE :
- size > MAX_FONT_SIZE ? MAX_FONT_SIZE : size;
- this.current.fontSizeScale = size / browserFontSize;
-
- var rule = italic + ' ' + bold + ' ' + browserFontSize + 'px ' + typeface;
- this.ctx.font = rule;
- },
- setTextRenderingMode: function CanvasGraphics_setTextRenderingMode(mode) {
- this.current.textRenderingMode = mode;
- },
- setTextRise: function CanvasGraphics_setTextRise(rise) {
- this.current.textRise = rise;
- },
- moveText: function CanvasGraphics_moveText(x, y) {
- this.current.x = this.current.lineX += x;
- this.current.y = this.current.lineY += y;
- },
- setLeadingMoveText: function CanvasGraphics_setLeadingMoveText(x, y) {
- this.setLeading(-y);
- this.moveText(x, y);
- },
- setTextMatrix: function CanvasGraphics_setTextMatrix(a, b, c, d, e, f) {
- this.current.textMatrix = [a, b, c, d, e, f];
- this.current.textMatrixScale = Math.sqrt(a * a + b * b);
-
- this.current.x = this.current.lineX = 0;
- this.current.y = this.current.lineY = 0;
- },
- nextLine: function CanvasGraphics_nextLine() {
- this.moveText(0, this.current.leading);
- },
-
- paintChar: function CanvasGraphics_paintChar(character, x, y) {
- var ctx = this.ctx;
- var current = this.current;
- var font = current.font;
- var textRenderingMode = current.textRenderingMode;
- var fontSize = current.fontSize / current.fontSizeScale;
- var fillStrokeMode = textRenderingMode &
- TextRenderingMode.FILL_STROKE_MASK;
- var isAddToPathSet = !!(textRenderingMode &
- TextRenderingMode.ADD_TO_PATH_FLAG);
-
- var addToPath;
- if (font.disableFontFace || isAddToPathSet) {
- addToPath = font.getPathGenerator(this.commonObjs, character);
- }
-
- if (font.disableFontFace) {
- ctx.save();
- ctx.translate(x, y);
- ctx.beginPath();
- addToPath(ctx, fontSize);
- if (fillStrokeMode === TextRenderingMode.FILL ||
- fillStrokeMode === TextRenderingMode.FILL_STROKE) {
- ctx.fill();
- }
- if (fillStrokeMode === TextRenderingMode.STROKE ||
- fillStrokeMode === TextRenderingMode.FILL_STROKE) {
- ctx.stroke();
- }
- ctx.restore();
- } else {
- if (fillStrokeMode === TextRenderingMode.FILL ||
- fillStrokeMode === TextRenderingMode.FILL_STROKE) {
- ctx.fillText(character, x, y);
- }
- if (fillStrokeMode === TextRenderingMode.STROKE ||
- fillStrokeMode === TextRenderingMode.FILL_STROKE) {
- ctx.strokeText(character, x, y);
- }
- }
-
- if (isAddToPathSet) {
- var paths = this.pendingTextPaths || (this.pendingTextPaths = []);
- paths.push({
- transform: ctx.mozCurrentTransform,
- x: x,
- y: y,
- fontSize: fontSize,
- addToPath: addToPath
- });
- }
- },
-
- get isFontSubpixelAAEnabled() {
- // Checks if anti-aliasing is enabled when scaled text is painted.
- // On Windows GDI scaled fonts looks bad.
- var ctx = document.createElement('canvas').getContext('2d');
- ctx.scale(1.5, 1);
- ctx.fillText('I', 0, 10);
- var data = ctx.getImageData(0, 0, 10, 10).data;
- var enabled = false;
- for (var i = 3; i < data.length; i += 4) {
- if (data[i] > 0 && data[i] < 255) {
- enabled = true;
- break;
- }
- }
- return shadow(this, 'isFontSubpixelAAEnabled', enabled);
- },
-
- showText: function CanvasGraphics_showText(glyphs) {
- var current = this.current;
- var font = current.font;
- if (font.isType3Font) {
- return this.showType3Text(glyphs);
- }
-
- var fontSize = current.fontSize;
- if (fontSize === 0) {
- return;
- }
-
- var ctx = this.ctx;
- var fontSizeScale = current.fontSizeScale;
- var charSpacing = current.charSpacing;
- var wordSpacing = current.wordSpacing;
- var fontDirection = current.fontDirection;
- var textHScale = current.textHScale * fontDirection;
- var glyphsLength = glyphs.length;
- var vertical = font.vertical;
- var spacingDir = vertical ? 1 : -1;
- var defaultVMetrics = font.defaultVMetrics;
- var widthAdvanceScale = fontSize * current.fontMatrix[0];
-
- var simpleFillText =
- current.textRenderingMode === TextRenderingMode.FILL &&
- !font.disableFontFace;
-
- ctx.save();
- ctx.transform.apply(ctx, current.textMatrix);
- ctx.translate(current.x, current.y + current.textRise);
-
- if (current.patternFill) {
- // TODO: Some shading patterns are not applied correctly to text,
- // e.g. issues 3988 and 5432, and ShowText-ShadingPattern.pdf.
- ctx.fillStyle = current.fillColor.getPattern(ctx, this);
- }
-
- if (fontDirection > 0) {
- ctx.scale(textHScale, -1);
- } else {
- ctx.scale(textHScale, 1);
- }
-
- var lineWidth = current.lineWidth;
- var scale = current.textMatrixScale;
- if (scale === 0 || lineWidth === 0) {
- var fillStrokeMode = current.textRenderingMode &
- TextRenderingMode.FILL_STROKE_MASK;
- if (fillStrokeMode === TextRenderingMode.STROKE ||
- fillStrokeMode === TextRenderingMode.FILL_STROKE) {
- this.cachedGetSinglePixelWidth = null;
- lineWidth = this.getSinglePixelWidth() * MIN_WIDTH_FACTOR;
- }
- } else {
- lineWidth /= scale;
- }
-
- if (fontSizeScale !== 1.0) {
- ctx.scale(fontSizeScale, fontSizeScale);
- lineWidth /= fontSizeScale;
- }
-
- ctx.lineWidth = lineWidth;
-
- var x = 0, i;
- for (i = 0; i < glyphsLength; ++i) {
- var glyph = glyphs[i];
- if (isNum(glyph)) {
- x += spacingDir * glyph * fontSize / 1000;
- continue;
- }
-
- var restoreNeeded = false;
- var spacing = (glyph.isSpace ? wordSpacing : 0) + charSpacing;
- var character = glyph.fontChar;
- var accent = glyph.accent;
- var scaledX, scaledY, scaledAccentX, scaledAccentY;
- var width = glyph.width;
- if (vertical) {
- var vmetric, vx, vy;
- vmetric = glyph.vmetric || defaultVMetrics;
- vx = glyph.vmetric ? vmetric[1] : width * 0.5;
- vx = -vx * widthAdvanceScale;
- vy = vmetric[2] * widthAdvanceScale;
-
- width = vmetric ? -vmetric[0] : width;
- scaledX = vx / fontSizeScale;
- scaledY = (x + vy) / fontSizeScale;
- } else {
- scaledX = x / fontSizeScale;
- scaledY = 0;
- }
-
- if (font.remeasure && width > 0) {
- // Some standard fonts may not have the exact width: rescale per
- // character if measured width is greater than expected glyph width
- // and subpixel-aa is enabled, otherwise just center the glyph.
- var measuredWidth = ctx.measureText(character).width * 1000 /
- fontSize * fontSizeScale;
- if (width < measuredWidth && this.isFontSubpixelAAEnabled) {
- var characterScaleX = width / measuredWidth;
- restoreNeeded = true;
- ctx.save();
- ctx.scale(characterScaleX, 1);
- scaledX /= characterScaleX;
- } else if (width !== measuredWidth) {
- scaledX += (width - measuredWidth) / 2000 *
- fontSize / fontSizeScale;
- }
- }
-
- // Only attempt to draw the glyph if it is actually in the embedded font
- // file or if there isn't a font file so the fallback font is shown.
- if (glyph.isInFont || font.missingFile) {
- if (simpleFillText && !accent) {
- // common case
- ctx.fillText(character, scaledX, scaledY);
- } else {
- this.paintChar(character, scaledX, scaledY);
- if (accent) {
- scaledAccentX = scaledX + accent.offset.x / fontSizeScale;
- scaledAccentY = scaledY - accent.offset.y / fontSizeScale;
- this.paintChar(accent.fontChar, scaledAccentX, scaledAccentY);
- }
- }
- }
-
- var charWidth = width * widthAdvanceScale + spacing * fontDirection;
- x += charWidth;
-
- if (restoreNeeded) {
- ctx.restore();
- }
- }
- if (vertical) {
- current.y -= x * textHScale;
- } else {
- current.x += x * textHScale;
- }
- ctx.restore();
- },
-
- showType3Text: function CanvasGraphics_showType3Text(glyphs) {
- // Type3 fonts - each glyph is a "mini-PDF"
- var ctx = this.ctx;
- var current = this.current;
- var font = current.font;
- var fontSize = current.fontSize;
- var fontDirection = current.fontDirection;
- var spacingDir = font.vertical ? 1 : -1;
- var charSpacing = current.charSpacing;
- var wordSpacing = current.wordSpacing;
- var textHScale = current.textHScale * fontDirection;
- var fontMatrix = current.fontMatrix || FONT_IDENTITY_MATRIX;
- var glyphsLength = glyphs.length;
- var isTextInvisible =
- current.textRenderingMode === TextRenderingMode.INVISIBLE;
- var i, glyph, width, spacingLength;
-
- if (isTextInvisible || fontSize === 0) {
- return;
- }
- this.cachedGetSinglePixelWidth = null;
-
- ctx.save();
- ctx.transform.apply(ctx, current.textMatrix);
- ctx.translate(current.x, current.y);
-
- ctx.scale(textHScale, fontDirection);
-
- for (i = 0; i < glyphsLength; ++i) {
- glyph = glyphs[i];
- if (isNum(glyph)) {
- spacingLength = spacingDir * glyph * fontSize / 1000;
- this.ctx.translate(spacingLength, 0);
- current.x += spacingLength * textHScale;
- continue;
- }
-
- var spacing = (glyph.isSpace ? wordSpacing : 0) + charSpacing;
- var operatorList = font.charProcOperatorList[glyph.operatorListId];
- if (!operatorList) {
- warn('Type3 character \"' + glyph.operatorListId +
- '\" is not available');
- continue;
- }
- this.processingType3 = glyph;
- this.save();
- ctx.scale(fontSize, fontSize);
- ctx.transform.apply(ctx, fontMatrix);
- this.executeOperatorList(operatorList);
- this.restore();
-
- var transformed = Util.applyTransform([glyph.width, 0], fontMatrix);
- width = transformed[0] * fontSize + spacing;
-
- ctx.translate(width, 0);
- current.x += width * textHScale;
- }
- ctx.restore();
- this.processingType3 = null;
- },
-
- // Type3 fonts
- setCharWidth: function CanvasGraphics_setCharWidth(xWidth, yWidth) {
- // We can safely ignore this since the width should be the same
- // as the width in the Widths array.
- },
- setCharWidthAndBounds: function CanvasGraphics_setCharWidthAndBounds(xWidth,
- yWidth,
- llx,
- lly,
- urx,
- ury) {
- // TODO According to the spec we're also suppose to ignore any operators
- // that set color or include images while processing this type3 font.
- this.ctx.rect(llx, lly, urx - llx, ury - lly);
- this.clip();
- this.endPath();
- },
-
- // Color
- getColorN_Pattern: function CanvasGraphics_getColorN_Pattern(IR) {
- var pattern;
- if (IR[0] === 'TilingPattern') {
- var color = IR[1];
- var baseTransform = this.baseTransform ||
- this.ctx.mozCurrentTransform.slice();
- var self = this;
- var canvasGraphicsFactory = {
- createCanvasGraphics: function (ctx) {
- return new CanvasGraphics(ctx, self.commonObjs, self.objs);
- }
- };
- pattern = new TilingPattern(IR, color, this.ctx, canvasGraphicsFactory,
- baseTransform);
- } else {
- pattern = getShadingPatternFromIR(IR);
- }
- return pattern;
- },
- setStrokeColorN: function CanvasGraphics_setStrokeColorN(/*...*/) {
- this.current.strokeColor = this.getColorN_Pattern(arguments);
- },
- setFillColorN: function CanvasGraphics_setFillColorN(/*...*/) {
- this.current.fillColor = this.getColorN_Pattern(arguments);
- this.current.patternFill = true;
- },
- setStrokeRGBColor: function CanvasGraphics_setStrokeRGBColor(r, g, b) {
- var color = Util.makeCssRgb(r, g, b);
- this.ctx.strokeStyle = color;
- this.current.strokeColor = color;
- },
- setFillRGBColor: function CanvasGraphics_setFillRGBColor(r, g, b) {
- var color = Util.makeCssRgb(r, g, b);
- this.ctx.fillStyle = color;
- this.current.fillColor = color;
- this.current.patternFill = false;
- },
-
- shadingFill: function CanvasGraphics_shadingFill(patternIR) {
- var ctx = this.ctx;
-
- this.save();
- var pattern = getShadingPatternFromIR(patternIR);
- ctx.fillStyle = pattern.getPattern(ctx, this, true);
-
- var inv = ctx.mozCurrentTransformInverse;
- if (inv) {
- var canvas = ctx.canvas;
- var width = canvas.width;
- var height = canvas.height;
-
- var bl = Util.applyTransform([0, 0], inv);
- var br = Util.applyTransform([0, height], inv);
- var ul = Util.applyTransform([width, 0], inv);
- var ur = Util.applyTransform([width, height], inv);
-
- var x0 = Math.min(bl[0], br[0], ul[0], ur[0]);
- var y0 = Math.min(bl[1], br[1], ul[1], ur[1]);
- var x1 = Math.max(bl[0], br[0], ul[0], ur[0]);
- var y1 = Math.max(bl[1], br[1], ul[1], ur[1]);
-
- this.ctx.fillRect(x0, y0, x1 - x0, y1 - y0);
- } else {
- // HACK to draw the gradient onto an infinite rectangle.
- // PDF gradients are drawn across the entire image while
- // Canvas only allows gradients to be drawn in a rectangle
- // The following bug should allow us to remove this.
- // https://bugzilla.mozilla.org/show_bug.cgi?id=664884
-
- this.ctx.fillRect(-1e10, -1e10, 2e10, 2e10);
- }
-
- this.restore();
- },
-
- // Images
- beginInlineImage: function CanvasGraphics_beginInlineImage() {
- error('Should not call beginInlineImage');
- },
- beginImageData: function CanvasGraphics_beginImageData() {
- error('Should not call beginImageData');
- },
-
- paintFormXObjectBegin: function CanvasGraphics_paintFormXObjectBegin(matrix,
- bbox) {
- this.save();
- this.baseTransformStack.push(this.baseTransform);
-
- if (isArray(matrix) && 6 === matrix.length) {
- this.transform.apply(this, matrix);
- }
-
- this.baseTransform = this.ctx.mozCurrentTransform;
-
- if (isArray(bbox) && 4 === bbox.length) {
- var width = bbox[2] - bbox[0];
- var height = bbox[3] - bbox[1];
- this.ctx.rect(bbox[0], bbox[1], width, height);
- this.clip();
- this.endPath();
- }
- },
-
- paintFormXObjectEnd: function CanvasGraphics_paintFormXObjectEnd() {
- this.restore();
- this.baseTransform = this.baseTransformStack.pop();
- },
-
- beginGroup: function CanvasGraphics_beginGroup(group) {
- this.save();
- var currentCtx = this.ctx;
- // TODO non-isolated groups - according to Rik at adobe non-isolated
- // group results aren't usually that different and they even have tools
- // that ignore this setting. Notes from Rik on implementing:
- // - When you encounter an transparency group, create a new canvas with
- // the dimensions of the bbox
- // - copy the content from the previous canvas to the new canvas
- // - draw as usual
- // - remove the backdrop alpha:
- // alphaNew = 1 - (1 - alpha)/(1 - alphaBackdrop) with 'alpha' the alpha
- // value of your transparency group and 'alphaBackdrop' the alpha of the
- // backdrop
- // - remove background color:
- // colorNew = color - alphaNew *colorBackdrop /(1 - alphaNew)
- if (!group.isolated) {
- info('TODO: Support non-isolated groups.');
- }
-
- // TODO knockout - supposedly possible with the clever use of compositing
- // modes.
- if (group.knockout) {
- warn('Knockout groups not supported.');
- }
-
- var currentTransform = currentCtx.mozCurrentTransform;
- if (group.matrix) {
- currentCtx.transform.apply(currentCtx, group.matrix);
- }
- assert(group.bbox, 'Bounding box is required.');
-
- // Based on the current transform figure out how big the bounding box
- // will actually be.
- var bounds = Util.getAxialAlignedBoundingBox(
- group.bbox,
- currentCtx.mozCurrentTransform);
- // Clip the bounding box to the current canvas.
- var canvasBounds = [0,
- 0,
- currentCtx.canvas.width,
- currentCtx.canvas.height];
- bounds = Util.intersect(bounds, canvasBounds) || [0, 0, 0, 0];
- // Use ceil in case we're between sizes so we don't create canvas that is
- // too small and make the canvas at least 1x1 pixels.
- var offsetX = Math.floor(bounds[0]);
- var offsetY = Math.floor(bounds[1]);
- var drawnWidth = Math.max(Math.ceil(bounds[2]) - offsetX, 1);
- var drawnHeight = Math.max(Math.ceil(bounds[3]) - offsetY, 1);
- var scaleX = 1, scaleY = 1;
- if (drawnWidth > MAX_GROUP_SIZE) {
- scaleX = drawnWidth / MAX_GROUP_SIZE;
- drawnWidth = MAX_GROUP_SIZE;
- }
- if (drawnHeight > MAX_GROUP_SIZE) {
- scaleY = drawnHeight / MAX_GROUP_SIZE;
- drawnHeight = MAX_GROUP_SIZE;
- }
-
- var cacheId = 'groupAt' + this.groupLevel;
- if (group.smask) {
- // Using two cache entries is case if masks are used one after another.
- cacheId += '_smask_' + ((this.smaskCounter++) % 2);
- }
- var scratchCanvas = this.cachedCanvases.getCanvas(
- cacheId, drawnWidth, drawnHeight, true);
- var groupCtx = scratchCanvas.context;
-
- // Since we created a new canvas that is just the size of the bounding box
- // we have to translate the group ctx.
- groupCtx.scale(1 / scaleX, 1 / scaleY);
- groupCtx.translate(-offsetX, -offsetY);
- groupCtx.transform.apply(groupCtx, currentTransform);
-
- if (group.smask) {
- // Saving state and cached mask to be used in setGState.
- this.smaskStack.push({
- canvas: scratchCanvas.canvas,
- context: groupCtx,
- offsetX: offsetX,
- offsetY: offsetY,
- scaleX: scaleX,
- scaleY: scaleY,
- subtype: group.smask.subtype,
- backdrop: group.smask.backdrop,
- transferMap: group.smask.transferMap || null,
- startTransformInverse: null, // used during suspend operation
- });
- } else {
- // Setup the current ctx so when the group is popped we draw it at the
- // right location.
- currentCtx.setTransform(1, 0, 0, 1, 0, 0);
- currentCtx.translate(offsetX, offsetY);
- currentCtx.scale(scaleX, scaleY);
- }
- // The transparency group inherits all off the current graphics state
- // except the blend mode, soft mask, and alpha constants.
- copyCtxState(currentCtx, groupCtx);
- this.ctx = groupCtx;
- this.setGState([
- ['BM', 'Normal'],
- ['ca', 1],
- ['CA', 1]
- ]);
- this.groupStack.push(currentCtx);
- this.groupLevel++;
-
- // Reseting mask state, masks will be applied on restore of the group.
- this.current.activeSMask = null;
- },
-
- endGroup: function CanvasGraphics_endGroup(group) {
- this.groupLevel--;
- var groupCtx = this.ctx;
- this.ctx = this.groupStack.pop();
- // Turn off image smoothing to avoid sub pixel interpolation which can
- // look kind of blurry for some pdfs.
- if (this.ctx.imageSmoothingEnabled !== undefined) {
- this.ctx.imageSmoothingEnabled = false;
- } else {
- this.ctx.mozImageSmoothingEnabled = false;
- }
- if (group.smask) {
- this.tempSMask = this.smaskStack.pop();
- } else {
- this.ctx.drawImage(groupCtx.canvas, 0, 0);
- }
- this.restore();
- },
-
- beginAnnotations: function CanvasGraphics_beginAnnotations() {
- this.save();
- this.current = new CanvasExtraState();
-
- if (this.baseTransform) {
- this.ctx.setTransform.apply(this.ctx, this.baseTransform);
- }
- },
-
- endAnnotations: function CanvasGraphics_endAnnotations() {
- this.restore();
- },
-
- beginAnnotation: function CanvasGraphics_beginAnnotation(rect, transform,
- matrix) {
- this.save();
-
- if (isArray(rect) && 4 === rect.length) {
- var width = rect[2] - rect[0];
- var height = rect[3] - rect[1];
- this.ctx.rect(rect[0], rect[1], width, height);
- this.clip();
- this.endPath();
- }
-
- this.transform.apply(this, transform);
- this.transform.apply(this, matrix);
- },
-
- endAnnotation: function CanvasGraphics_endAnnotation() {
- this.restore();
- },
-
- paintJpegXObject: function CanvasGraphics_paintJpegXObject(objId, w, h) {
- var domImage = this.objs.get(objId);
- if (!domImage) {
- warn('Dependent image isn\'t ready yet');
- return;
- }
-
- this.save();
-
- var ctx = this.ctx;
- // scale the image to the unit square
- ctx.scale(1 / w, -1 / h);
-
- ctx.drawImage(domImage, 0, 0, domImage.width, domImage.height,
- 0, -h, w, h);
- if (this.imageLayer) {
- var currentTransform = ctx.mozCurrentTransformInverse;
- var position = this.getCanvasPosition(0, 0);
- this.imageLayer.appendImage({
- objId: objId,
- left: position[0],
- top: position[1],
- width: w / currentTransform[0],
- height: h / currentTransform[3]
- });
- }
- this.restore();
- },
-
- paintImageMaskXObject: function CanvasGraphics_paintImageMaskXObject(img) {
- var ctx = this.ctx;
- var width = img.width, height = img.height;
- var fillColor = this.current.fillColor;
- var isPatternFill = this.current.patternFill;
-
- var glyph = this.processingType3;
-
- if (COMPILE_TYPE3_GLYPHS && glyph && glyph.compiled === undefined) {
- if (width <= MAX_SIZE_TO_COMPILE && height <= MAX_SIZE_TO_COMPILE) {
- glyph.compiled =
- compileType3Glyph({data: img.data, width: width, height: height});
- } else {
- glyph.compiled = null;
- }
- }
-
- if (glyph && glyph.compiled) {
- glyph.compiled(ctx);
- return;
- }
-
- var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas',
- width, height);
- var maskCtx = maskCanvas.context;
- maskCtx.save();
-
- putBinaryImageMask(maskCtx, img);
-
- maskCtx.globalCompositeOperation = 'source-in';
-
- maskCtx.fillStyle = isPatternFill ?
- fillColor.getPattern(maskCtx, this) : fillColor;
- maskCtx.fillRect(0, 0, width, height);
-
- maskCtx.restore();
-
- this.paintInlineImageXObject(maskCanvas.canvas);
- },
-
- paintImageMaskXObjectRepeat:
- function CanvasGraphics_paintImageMaskXObjectRepeat(imgData, scaleX,
- scaleY, positions) {
- var width = imgData.width;
- var height = imgData.height;
- var fillColor = this.current.fillColor;
- var isPatternFill = this.current.patternFill;
-
- var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas',
- width, height);
- var maskCtx = maskCanvas.context;
- maskCtx.save();
-
- putBinaryImageMask(maskCtx, imgData);
-
- maskCtx.globalCompositeOperation = 'source-in';
-
- maskCtx.fillStyle = isPatternFill ?
- fillColor.getPattern(maskCtx, this) : fillColor;
- maskCtx.fillRect(0, 0, width, height);
-
- maskCtx.restore();
-
- var ctx = this.ctx;
- for (var i = 0, ii = positions.length; i < ii; i += 2) {
- ctx.save();
- ctx.transform(scaleX, 0, 0, scaleY, positions[i], positions[i + 1]);
- ctx.scale(1, -1);
- ctx.drawImage(maskCanvas.canvas, 0, 0, width, height,
- 0, -1, 1, 1);
- ctx.restore();
- }
- },
-
- paintImageMaskXObjectGroup:
- function CanvasGraphics_paintImageMaskXObjectGroup(images) {
- var ctx = this.ctx;
-
- var fillColor = this.current.fillColor;
- var isPatternFill = this.current.patternFill;
- for (var i = 0, ii = images.length; i < ii; i++) {
- var image = images[i];
- var width = image.width, height = image.height;
-
- var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas',
- width, height);
- var maskCtx = maskCanvas.context;
- maskCtx.save();
-
- putBinaryImageMask(maskCtx, image);
-
- maskCtx.globalCompositeOperation = 'source-in';
-
- maskCtx.fillStyle = isPatternFill ?
- fillColor.getPattern(maskCtx, this) : fillColor;
- maskCtx.fillRect(0, 0, width, height);
-
- maskCtx.restore();
-
- ctx.save();
- ctx.transform.apply(ctx, image.transform);
- ctx.scale(1, -1);
- ctx.drawImage(maskCanvas.canvas, 0, 0, width, height,
- 0, -1, 1, 1);
- ctx.restore();
- }
- },
-
- paintImageXObject: function CanvasGraphics_paintImageXObject(objId) {
- var imgData = this.objs.get(objId);
- if (!imgData) {
- warn('Dependent image isn\'t ready yet');
- return;
- }
-
- this.paintInlineImageXObject(imgData);
- },
-
- paintImageXObjectRepeat:
- function CanvasGraphics_paintImageXObjectRepeat(objId, scaleX, scaleY,
- positions) {
- var imgData = this.objs.get(objId);
- if (!imgData) {
- warn('Dependent image isn\'t ready yet');
- return;
- }
-
- var width = imgData.width;
- var height = imgData.height;
- var map = [];
- for (var i = 0, ii = positions.length; i < ii; i += 2) {
- map.push({transform: [scaleX, 0, 0, scaleY, positions[i],
- positions[i + 1]], x: 0, y: 0, w: width, h: height});
- }
- this.paintInlineImageXObjectGroup(imgData, map);
- },
-
- paintInlineImageXObject:
- function CanvasGraphics_paintInlineImageXObject(imgData) {
- var width = imgData.width;
- var height = imgData.height;
- var ctx = this.ctx;
-
- this.save();
- // scale the image to the unit square
- ctx.scale(1 / width, -1 / height);
-
- var currentTransform = ctx.mozCurrentTransformInverse;
- var a = currentTransform[0], b = currentTransform[1];
- var widthScale = Math.max(Math.sqrt(a * a + b * b), 1);
- var c = currentTransform[2], d = currentTransform[3];
- var heightScale = Math.max(Math.sqrt(c * c + d * d), 1);
-
- var imgToPaint, tmpCanvas;
- // instanceof HTMLElement does not work in jsdom node.js module
- if (imgData instanceof HTMLElement || !imgData.data) {
- imgToPaint = imgData;
- } else {
- tmpCanvas = this.cachedCanvases.getCanvas('inlineImage',
- width, height);
- var tmpCtx = tmpCanvas.context;
- putBinaryImageData(tmpCtx, imgData);
- imgToPaint = tmpCanvas.canvas;
- }
-
- var paintWidth = width, paintHeight = height;
- var tmpCanvasId = 'prescale1';
- // Vertial or horizontal scaling shall not be more than 2 to not loose the
- // pixels during drawImage operation, painting on the temporary canvas(es)
- // that are twice smaller in size
- while ((widthScale > 2 && paintWidth > 1) ||
- (heightScale > 2 && paintHeight > 1)) {
- var newWidth = paintWidth, newHeight = paintHeight;
- if (widthScale > 2 && paintWidth > 1) {
- newWidth = Math.ceil(paintWidth / 2);
- widthScale /= paintWidth / newWidth;
- }
- if (heightScale > 2 && paintHeight > 1) {
- newHeight = Math.ceil(paintHeight / 2);
- heightScale /= paintHeight / newHeight;
- }
- tmpCanvas = this.cachedCanvases.getCanvas(tmpCanvasId,
- newWidth, newHeight);
- tmpCtx = tmpCanvas.context;
- tmpCtx.clearRect(0, 0, newWidth, newHeight);
- tmpCtx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight,
- 0, 0, newWidth, newHeight);
- imgToPaint = tmpCanvas.canvas;
- paintWidth = newWidth;
- paintHeight = newHeight;
- tmpCanvasId = tmpCanvasId === 'prescale1' ? 'prescale2' : 'prescale1';
- }
- ctx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight,
- 0, -height, width, height);
-
- if (this.imageLayer) {
- var position = this.getCanvasPosition(0, -height);
- this.imageLayer.appendImage({
- imgData: imgData,
- left: position[0],
- top: position[1],
- width: width / currentTransform[0],
- height: height / currentTransform[3]
- });
- }
- this.restore();
- },
-
- paintInlineImageXObjectGroup:
- function CanvasGraphics_paintInlineImageXObjectGroup(imgData, map) {
- var ctx = this.ctx;
- var w = imgData.width;
- var h = imgData.height;
-
- var tmpCanvas = this.cachedCanvases.getCanvas('inlineImage', w, h);
- var tmpCtx = tmpCanvas.context;
- putBinaryImageData(tmpCtx, imgData);
-
- for (var i = 0, ii = map.length; i < ii; i++) {
- var entry = map[i];
- ctx.save();
- ctx.transform.apply(ctx, entry.transform);
- ctx.scale(1, -1);
- ctx.drawImage(tmpCanvas.canvas, entry.x, entry.y, entry.w, entry.h,
- 0, -1, 1, 1);
- if (this.imageLayer) {
- var position = this.getCanvasPosition(entry.x, entry.y);
- this.imageLayer.appendImage({
- imgData: imgData,
- left: position[0],
- top: position[1],
- width: w,
- height: h
- });
- }
- ctx.restore();
- }
- },
-
- paintSolidColorImageMask:
- function CanvasGraphics_paintSolidColorImageMask() {
- this.ctx.fillRect(0, 0, 1, 1);
- },
-
- paintXObject: function CanvasGraphics_paintXObject() {
- warn('Unsupported \'paintXObject\' command.');
- },
-
- // Marked content
-
- markPoint: function CanvasGraphics_markPoint(tag) {
- // TODO Marked content.
- },
- markPointProps: function CanvasGraphics_markPointProps(tag, properties) {
- // TODO Marked content.
- },
- beginMarkedContent: function CanvasGraphics_beginMarkedContent(tag) {
- // TODO Marked content.
- },
- beginMarkedContentProps: function CanvasGraphics_beginMarkedContentProps(
- tag, properties) {
- // TODO Marked content.
- },
- endMarkedContent: function CanvasGraphics_endMarkedContent() {
- // TODO Marked content.
- },
-
- // Compatibility
-
- beginCompat: function CanvasGraphics_beginCompat() {
- // TODO ignore undefined operators (should we do that anyway?)
- },
- endCompat: function CanvasGraphics_endCompat() {
- // TODO stop ignoring undefined operators
- },
-
- // Helper functions
-
- consumePath: function CanvasGraphics_consumePath() {
- var ctx = this.ctx;
- if (this.pendingClip) {
- if (this.pendingClip === EO_CLIP) {
- if (ctx.mozFillRule !== undefined) {
- ctx.mozFillRule = 'evenodd';
- ctx.clip();
- ctx.mozFillRule = 'nonzero';
- } else {
- ctx.clip('evenodd');
- }
- } else {
- ctx.clip();
- }
- this.pendingClip = null;
- }
- ctx.beginPath();
- },
- getSinglePixelWidth: function CanvasGraphics_getSinglePixelWidth(scale) {
- if (this.cachedGetSinglePixelWidth === null) {
- // NOTE: The `save` and `restore` commands used below is a workaround
- // that is necessary in order to prevent `mozCurrentTransformInverse`
- // from intermittently returning incorrect values in Firefox, see:
- // https://github.com/mozilla/pdf.js/issues/7188.
- this.ctx.save();
- var inverse = this.ctx.mozCurrentTransformInverse;
- this.ctx.restore();
- // max of the current horizontal and vertical scale
- this.cachedGetSinglePixelWidth = Math.sqrt(Math.max(
- (inverse[0] * inverse[0] + inverse[1] * inverse[1]),
- (inverse[2] * inverse[2] + inverse[3] * inverse[3])));
- }
- return this.cachedGetSinglePixelWidth;
- },
- getCanvasPosition: function CanvasGraphics_getCanvasPosition(x, y) {
- var transform = this.ctx.mozCurrentTransform;
- return [
- transform[0] * x + transform[2] * y + transform[4],
- transform[1] * x + transform[3] * y + transform[5]
- ];
- }
- };
-
- for (var op in OPS) {
- CanvasGraphics.prototype[OPS[op]] = CanvasGraphics.prototype[op];
- }
-
- return CanvasGraphics;
-})();
-
-exports.CanvasGraphics = CanvasGraphics;
-exports.createScratchCanvas = createScratchCanvas;
-}));
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsDisplayAPI = {}), root.pdfjsSharedUtil,
- root.pdfjsDisplayFontLoader, root.pdfjsDisplayCanvas,
- root.pdfjsDisplayMetadata, root.pdfjsDisplayDOMUtils);
- }
-}(this, function (exports, sharedUtil, displayFontLoader, displayCanvas,
- displayMetadata, displayDOMUtils, amdRequire) {
-
-var InvalidPDFException = sharedUtil.InvalidPDFException;
-var MessageHandler = sharedUtil.MessageHandler;
-var MissingPDFException = sharedUtil.MissingPDFException;
-var PageViewport = sharedUtil.PageViewport;
-var PasswordResponses = sharedUtil.PasswordResponses;
-var PasswordException = sharedUtil.PasswordException;
-var StatTimer = sharedUtil.StatTimer;
-var UnexpectedResponseException = sharedUtil.UnexpectedResponseException;
-var UnknownErrorException = sharedUtil.UnknownErrorException;
-var Util = sharedUtil.Util;
-var createPromiseCapability = sharedUtil.createPromiseCapability;
-var error = sharedUtil.error;
-var deprecated = sharedUtil.deprecated;
-var getVerbosityLevel = sharedUtil.getVerbosityLevel;
-var info = sharedUtil.info;
-var isInt = sharedUtil.isInt;
-var isArray = sharedUtil.isArray;
-var isArrayBuffer = sharedUtil.isArrayBuffer;
-var isSameOrigin = sharedUtil.isSameOrigin;
-var loadJpegStream = sharedUtil.loadJpegStream;
-var stringToBytes = sharedUtil.stringToBytes;
-var globalScope = sharedUtil.globalScope;
-var warn = sharedUtil.warn;
-var FontFaceObject = displayFontLoader.FontFaceObject;
-var FontLoader = displayFontLoader.FontLoader;
-var CanvasGraphics = displayCanvas.CanvasGraphics;
-var createScratchCanvas = displayCanvas.createScratchCanvas;
-var Metadata = displayMetadata.Metadata;
-var getDefaultSetting = displayDOMUtils.getDefaultSetting;
-
-var DEFAULT_RANGE_CHUNK_SIZE = 65536; // 2^16 = 65536
-
-var isWorkerDisabled = false;
-var workerSrc;
-var isPostMessageTransfersDisabled = false;
-
-
-var useRequireEnsure = false;
-if (typeof window === 'undefined') {
- // node.js - disable worker and set require.ensure.
- isWorkerDisabled = true;
- if (typeof require.ensure === 'undefined') {
- require.ensure = require('node-ensure');
- }
- useRequireEnsure = true;
-}
-if (typeof __webpack_require__ !== 'undefined') {
- useRequireEnsure = true;
-}
-if (typeof requirejs !== 'undefined' && requirejs.toUrl) {
- workerSrc = requirejs.toUrl('pdfjs-dist/build/pdf.worker.js');
-}
-var dynamicLoaderSupported = typeof requirejs !== 'undefined' && requirejs.load;
-var fakeWorkerFilesLoader = useRequireEnsure ? (function (callback) {
- require.ensure([], function () {
- var worker = require('./pdf.worker.js');
- callback(worker.WorkerMessageHandler);
- });
-}) : dynamicLoaderSupported ? (function (callback) {
- requirejs(['pdfjs-dist/build/pdf.worker'], function (worker) {
- callback(worker.WorkerMessageHandler);
- });
-}) : null;
-
-
-/**
- * Document initialization / loading parameters object.
- *
- * @typedef {Object} DocumentInitParameters
- * @property {string} url - The URL of the PDF.
- * @property {TypedArray|Array|string} data - Binary PDF data. Use typed arrays
- * (Uint8Array) to improve the memory usage. If PDF data is BASE64-encoded,
- * use atob() to convert it to a binary string first.
- * @property {Object} httpHeaders - Basic authentication headers.
- * @property {boolean} withCredentials - Indicates whether or not cross-site
- * Access-Control requests should be made using credentials such as cookies
- * or authorization headers. The default is false.
- * @property {string} password - For decrypting password-protected PDFs.
- * @property {TypedArray} initialData - A typed array with the first portion or
- * all of the pdf data. Used by the extension since some data is already
- * loaded before the switch to range requests.
- * @property {number} length - The PDF file length. It's used for progress
- * reports and range requests operations.
- * @property {PDFDataRangeTransport} range
- * @property {number} rangeChunkSize - Optional parameter to specify
- * maximum number of bytes fetched per range request. The default value is
- * 2^16 = 65536.
- * @property {PDFWorker} worker - The worker that will be used for the loading
- * and parsing of the PDF data.
- */
-
-/**
- * @typedef {Object} PDFDocumentStats
- * @property {Array} streamTypes - Used stream types in the document (an item
- * is set to true if specific stream ID was used in the document).
- * @property {Array} fontTypes - Used font type in the document (an item is set
- * to true if specific font ID was used in the document).
- */
-
-/**
- * This is the main entry point for loading a PDF and interacting with it.
- * NOTE: If a URL is used to fetch the PDF data a standard XMLHttpRequest(XHR)
- * is used, which means it must follow the same origin rules that any XHR does
- * e.g. No cross domain requests without CORS.
- *
- * @param {string|TypedArray|DocumentInitParameters|PDFDataRangeTransport} src
- * Can be a url to where a PDF is located, a typed array (Uint8Array)
- * already populated with data or parameter object.
- *
- * @param {PDFDataRangeTransport} pdfDataRangeTransport (deprecated) It is used
- * if you want to manually serve range requests for data in the PDF.
- *
- * @param {function} passwordCallback (deprecated) It is used to request a
- * password if wrong or no password was provided. The callback receives two
- * parameters: function that needs to be called with new password and reason
- * (see {PasswordResponses}).
- *
- * @param {function} progressCallback (deprecated) It is used to be able to
- * monitor the loading progress of the PDF file (necessary to implement e.g.
- * a loading bar). The callback receives an {Object} with the properties:
- * {number} loaded and {number} total.
- *
- * @return {PDFDocumentLoadingTask}
- */
-function getDocument(src, pdfDataRangeTransport,
- passwordCallback, progressCallback) {
- var task = new PDFDocumentLoadingTask();
-
- // Support of the obsolete arguments (for compatibility with API v1.0)
- if (arguments.length > 1) {
- deprecated('getDocument is called with pdfDataRangeTransport, ' +
- 'passwordCallback or progressCallback argument');
- }
- if (pdfDataRangeTransport) {
- if (!(pdfDataRangeTransport instanceof PDFDataRangeTransport)) {
- // Not a PDFDataRangeTransport instance, trying to add missing properties.
- pdfDataRangeTransport = Object.create(pdfDataRangeTransport);
- pdfDataRangeTransport.length = src.length;
- pdfDataRangeTransport.initialData = src.initialData;
- if (!pdfDataRangeTransport.abort) {
- pdfDataRangeTransport.abort = function () {};
- }
- }
- src = Object.create(src);
- src.range = pdfDataRangeTransport;
- }
- task.onPassword = passwordCallback || null;
- task.onProgress = progressCallback || null;
-
- var source;
- if (typeof src === 'string') {
- source = { url: src };
- } else if (isArrayBuffer(src)) {
- source = { data: src };
- } else if (src instanceof PDFDataRangeTransport) {
- source = { range: src };
- } else {
- if (typeof src !== 'object') {
- error('Invalid parameter in getDocument, need either Uint8Array, ' +
- 'string or a parameter object');
- }
- if (!src.url && !src.data && !src.range) {
- error('Invalid parameter object: need either .data, .range or .url');
- }
-
- source = src;
- }
-
- var params = {};
- var rangeTransport = null;
- var worker = null;
- for (var key in source) {
- if (key === 'url' && typeof window !== 'undefined') {
- // The full path is required in the 'url' field.
- params[key] = new URL(source[key], window.location).href;
- continue;
- } else if (key === 'range') {
- rangeTransport = source[key];
- continue;
- } else if (key === 'worker') {
- worker = source[key];
- continue;
- } else if (key === 'data' && !(source[key] instanceof Uint8Array)) {
- // Converting string or array-like data to Uint8Array.
- var pdfBytes = source[key];
- if (typeof pdfBytes === 'string') {
- params[key] = stringToBytes(pdfBytes);
- } else if (typeof pdfBytes === 'object' && pdfBytes !== null &&
- !isNaN(pdfBytes.length)) {
- params[key] = new Uint8Array(pdfBytes);
- } else if (isArrayBuffer(pdfBytes)) {
- params[key] = new Uint8Array(pdfBytes);
- } else {
- error('Invalid PDF binary data: either typed array, string or ' +
- 'array-like object is expected in the data property.');
- }
- continue;
- }
- params[key] = source[key];
- }
-
- params.rangeChunkSize = params.rangeChunkSize || DEFAULT_RANGE_CHUNK_SIZE;
-
- if (!worker) {
- // Worker was not provided -- creating and owning our own.
- worker = new PDFWorker();
- task._worker = worker;
- }
- var docId = task.docId;
- worker.promise.then(function () {
- if (task.destroyed) {
- throw new Error('Loading aborted');
- }
- return _fetchDocument(worker, params, rangeTransport, docId).then(
- function (workerId) {
- if (task.destroyed) {
- throw new Error('Loading aborted');
- }
- var messageHandler = new MessageHandler(docId, workerId, worker.port);
- var transport = new WorkerTransport(messageHandler, task, rangeTransport);
- task._transport = transport;
- messageHandler.send('Ready', null);
- });
- }).catch(task._capability.reject);
-
- return task;
-}
-
-/**
- * Starts fetching of specified PDF document/data.
- * @param {PDFWorker} worker
- * @param {Object} source
- * @param {PDFDataRangeTransport} pdfDataRangeTransport
- * @param {string} docId Unique document id, used as MessageHandler id.
- * @returns {Promise} The promise, which is resolved when worker id of
- * MessageHandler is known.
- * @private
- */
-function _fetchDocument(worker, source, pdfDataRangeTransport, docId) {
- if (worker.destroyed) {
- return Promise.reject(new Error('Worker was destroyed'));
- }
-
- source.disableAutoFetch = getDefaultSetting('disableAutoFetch');
- source.disableStream = getDefaultSetting('disableStream');
- source.chunkedViewerLoading = !!pdfDataRangeTransport;
- if (pdfDataRangeTransport) {
- source.length = pdfDataRangeTransport.length;
- source.initialData = pdfDataRangeTransport.initialData;
- }
- return worker.messageHandler.sendWithPromise('GetDocRequest', {
- docId: docId,
- source: source,
- disableRange: getDefaultSetting('disableRange'),
- maxImageSize: getDefaultSetting('maxImageSize'),
- cMapUrl: getDefaultSetting('cMapUrl'),
- cMapPacked: getDefaultSetting('cMapPacked'),
- disableFontFace: getDefaultSetting('disableFontFace'),
- disableCreateObjectURL: getDefaultSetting('disableCreateObjectURL'),
- postMessageTransfers: getDefaultSetting('postMessageTransfers') &&
- !isPostMessageTransfersDisabled,
- }).then(function (workerId) {
- if (worker.destroyed) {
- throw new Error('Worker was destroyed');
- }
- return workerId;
- });
-}
-
-/**
- * PDF document loading operation.
- * @class
- * @alias PDFDocumentLoadingTask
- */
-var PDFDocumentLoadingTask = (function PDFDocumentLoadingTaskClosure() {
- var nextDocumentId = 0;
-
- /** @constructs PDFDocumentLoadingTask */
- function PDFDocumentLoadingTask() {
- this._capability = createPromiseCapability();
- this._transport = null;
- this._worker = null;
-
- /**
- * Unique document loading task id -- used in MessageHandlers.
- * @type {string}
- */
- this.docId = 'd' + (nextDocumentId++);
-
- /**
- * Shows if loading task is destroyed.
- * @type {boolean}
- */
- this.destroyed = false;
-
- /**
- * Callback to request a password if wrong or no password was provided.
- * The callback receives two parameters: function that needs to be called
- * with new password and reason (see {PasswordResponses}).
- */
- this.onPassword = null;
-
- /**
- * Callback to be able to monitor the loading progress of the PDF file
- * (necessary to implement e.g. a loading bar). The callback receives
- * an {Object} with the properties: {number} loaded and {number} total.
- */
- this.onProgress = null;
-
- /**
- * Callback to when unsupported feature is used. The callback receives
- * an {UNSUPPORTED_FEATURES} argument.
- */
- this.onUnsupportedFeature = null;
- }
-
- PDFDocumentLoadingTask.prototype =
- /** @lends PDFDocumentLoadingTask.prototype */ {
- /**
- * @return {Promise}
- */
- get promise() {
- return this._capability.promise;
- },
-
- /**
- * Aborts all network requests and destroys worker.
- * @return {Promise} A promise that is resolved after destruction activity
- * is completed.
- */
- destroy: function () {
- this.destroyed = true;
-
- var transportDestroyed = !this._transport ? Promise.resolve() :
- this._transport.destroy();
- return transportDestroyed.then(function () {
- this._transport = null;
- if (this._worker) {
- this._worker.destroy();
- this._worker = null;
- }
- }.bind(this));
- },
-
- /**
- * Registers callbacks to indicate the document loading completion.
- *
- * @param {function} onFulfilled The callback for the loading completion.
- * @param {function} onRejected The callback for the loading failure.
- * @return {Promise} A promise that is resolved after the onFulfilled or
- * onRejected callback.
- */
- then: function PDFDocumentLoadingTask_then(onFulfilled, onRejected) {
- return this.promise.then.apply(this.promise, arguments);
- }
- };
-
- return PDFDocumentLoadingTask;
-})();
-
-/**
- * Abstract class to support range requests file loading.
- * @class
- * @alias PDFDataRangeTransport
- * @param {number} length
- * @param {Uint8Array} initialData
- */
-var PDFDataRangeTransport = (function pdfDataRangeTransportClosure() {
- function PDFDataRangeTransport(length, initialData) {
- this.length = length;
- this.initialData = initialData;
-
- this._rangeListeners = [];
- this._progressListeners = [];
- this._progressiveReadListeners = [];
- this._readyCapability = createPromiseCapability();
- }
- PDFDataRangeTransport.prototype =
- /** @lends PDFDataRangeTransport.prototype */ {
- addRangeListener:
- function PDFDataRangeTransport_addRangeListener(listener) {
- this._rangeListeners.push(listener);
- },
-
- addProgressListener:
- function PDFDataRangeTransport_addProgressListener(listener) {
- this._progressListeners.push(listener);
- },
-
- addProgressiveReadListener:
- function PDFDataRangeTransport_addProgressiveReadListener(listener) {
- this._progressiveReadListeners.push(listener);
- },
-
- onDataRange: function PDFDataRangeTransport_onDataRange(begin, chunk) {
- var listeners = this._rangeListeners;
- for (var i = 0, n = listeners.length; i < n; ++i) {
- listeners[i](begin, chunk);
- }
- },
-
- onDataProgress: function PDFDataRangeTransport_onDataProgress(loaded) {
- this._readyCapability.promise.then(function () {
- var listeners = this._progressListeners;
- for (var i = 0, n = listeners.length; i < n; ++i) {
- listeners[i](loaded);
- }
- }.bind(this));
- },
-
- onDataProgressiveRead:
- function PDFDataRangeTransport_onDataProgress(chunk) {
- this._readyCapability.promise.then(function () {
- var listeners = this._progressiveReadListeners;
- for (var i = 0, n = listeners.length; i < n; ++i) {
- listeners[i](chunk);
- }
- }.bind(this));
- },
-
- transportReady: function PDFDataRangeTransport_transportReady() {
- this._readyCapability.resolve();
- },
-
- requestDataRange:
- function PDFDataRangeTransport_requestDataRange(begin, end) {
- throw new Error('Abstract method PDFDataRangeTransport.requestDataRange');
- },
-
- abort: function PDFDataRangeTransport_abort() {
- }
- };
- return PDFDataRangeTransport;
-})();
-
-/**
- * Proxy to a PDFDocument in the worker thread. Also, contains commonly used
- * properties that can be read synchronously.
- * @class
- * @alias PDFDocumentProxy
- */
-var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
- function PDFDocumentProxy(pdfInfo, transport, loadingTask) {
- this.pdfInfo = pdfInfo;
- this.transport = transport;
- this.loadingTask = loadingTask;
- }
- PDFDocumentProxy.prototype = /** @lends PDFDocumentProxy.prototype */ {
- /**
- * @return {number} Total number of pages the PDF contains.
- */
- get numPages() {
- return this.pdfInfo.numPages;
- },
- /**
- * @return {string} A unique ID to identify a PDF. Not guaranteed to be
- * unique.
- */
- get fingerprint() {
- return this.pdfInfo.fingerprint;
- },
- /**
- * @param {number} pageNumber The page number to get. The first page is 1.
- * @return {Promise} A promise that is resolved with a {@link PDFPageProxy}
- * object.
- */
- getPage: function PDFDocumentProxy_getPage(pageNumber) {
- return this.transport.getPage(pageNumber);
- },
- /**
- * @param {{num: number, gen: number}} ref The page reference. Must have
- * the 'num' and 'gen' properties.
- * @return {Promise} A promise that is resolved with the page index that is
- * associated with the reference.
- */
- getPageIndex: function PDFDocumentProxy_getPageIndex(ref) {
- return this.transport.getPageIndex(ref);
- },
- /**
- * @return {Promise} A promise that is resolved with a lookup table for
- * mapping named destinations to reference numbers.
- *
- * This can be slow for large documents: use getDestination instead
- */
- getDestinations: function PDFDocumentProxy_getDestinations() {
- return this.transport.getDestinations();
- },
- /**
- * @param {string} id The named destination to get.
- * @return {Promise} A promise that is resolved with all information
- * of the given named destination.
- */
- getDestination: function PDFDocumentProxy_getDestination(id) {
- return this.transport.getDestination(id);
- },
- /**
- * @return {Promise} A promise that is resolved with:
- * an Array containing the pageLabels that correspond to the pageIndexes,
- * or `null` when no pageLabels are present in the PDF file.
- */
- getPageLabels: function PDFDocumentProxy_getPageLabels() {
- return this.transport.getPageLabels();
- },
- /**
- * @return {Promise} A promise that is resolved with a lookup table for
- * mapping named attachments to their content.
- */
- getAttachments: function PDFDocumentProxy_getAttachments() {
- return this.transport.getAttachments();
- },
- /**
- * @return {Promise} A promise that is resolved with an array of all the
- * JavaScript strings in the name tree.
- */
- getJavaScript: function PDFDocumentProxy_getJavaScript() {
- return this.transport.getJavaScript();
- },
- /**
- * @return {Promise} A promise that is resolved with an {Array} that is a
- * tree outline (if it has one) of the PDF. The tree is in the format of:
- * [
- * {
- * title: string,
- * bold: boolean,
- * italic: boolean,
- * color: rgb Uint8Array,
- * dest: dest obj,
- * url: string,
- * items: array of more items like this
- * },
- * ...
- * ].
- */
- getOutline: function PDFDocumentProxy_getOutline() {
- return this.transport.getOutline();
- },
- /**
- * @return {Promise} A promise that is resolved with an {Object} that has
- * info and metadata properties. Info is an {Object} filled with anything
- * available in the information dictionary and similarly metadata is a
- * {Metadata} object with information from the metadata section of the PDF.
- */
- getMetadata: function PDFDocumentProxy_getMetadata() {
- return this.transport.getMetadata();
- },
- /**
- * @return {Promise} A promise that is resolved with a TypedArray that has
- * the raw data from the PDF.
- */
- getData: function PDFDocumentProxy_getData() {
- return this.transport.getData();
- },
- /**
- * @return {Promise} A promise that is resolved when the document's data
- * is loaded. It is resolved with an {Object} that contains the length
- * property that indicates size of the PDF data in bytes.
- */
- getDownloadInfo: function PDFDocumentProxy_getDownloadInfo() {
- return this.transport.downloadInfoCapability.promise;
- },
- /**
- * @return {Promise} A promise this is resolved with current stats about
- * document structures (see {@link PDFDocumentStats}).
- */
- getStats: function PDFDocumentProxy_getStats() {
- return this.transport.getStats();
- },
- /**
- * Cleans up resources allocated by the document, e.g. created @font-face.
- */
- cleanup: function PDFDocumentProxy_cleanup() {
- this.transport.startCleanup();
- },
- /**
- * Destroys current document instance and terminates worker.
- */
- destroy: function PDFDocumentProxy_destroy() {
- return this.loadingTask.destroy();
- }
- };
- return PDFDocumentProxy;
-})();
-
-/**
- * Page getTextContent parameters.
- *
- * @typedef {Object} getTextContentParameters
- * @param {boolean} normalizeWhitespace - replaces all occurrences of
- * whitespace with standard spaces (0x20). The default value is `false`.
- * @param {boolean} disableCombineTextItems - do not attempt to combine
- * same line {@link TextItem}'s. The default value is `false`.
- */
-
-/**
- * Page text content.
- *
- * @typedef {Object} TextContent
- * @property {array} items - array of {@link TextItem}
- * @property {Object} styles - {@link TextStyles} objects, indexed by font
- * name.
- */
-
-/**
- * Page text content part.
- *
- * @typedef {Object} TextItem
- * @property {string} str - text content.
- * @property {string} dir - text direction: 'ttb', 'ltr' or 'rtl'.
- * @property {array} transform - transformation matrix.
- * @property {number} width - width in device space.
- * @property {number} height - height in device space.
- * @property {string} fontName - font name used by pdf.js for converted font.
- */
-
-/**
- * Text style.
- *
- * @typedef {Object} TextStyle
- * @property {number} ascent - font ascent.
- * @property {number} descent - font descent.
- * @property {boolean} vertical - text is in vertical mode.
- * @property {string} fontFamily - possible font family
- */
-
-/**
- * Page annotation parameters.
- *
- * @typedef {Object} GetAnnotationsParameters
- * @param {string} intent - Determines the annotations that will be fetched,
- * can be either 'display' (viewable annotations) or 'print'
- * (printable annotations).
- * If the parameter is omitted, all annotations are fetched.
- */
-
-/**
- * Page render parameters.
- *
- * @typedef {Object} RenderParameters
- * @property {Object} canvasContext - A 2D context of a DOM Canvas object.
- * @property {PageViewport} viewport - Rendering viewport obtained by
- * calling of PDFPage.getViewport method.
- * @property {string} intent - Rendering intent, can be 'display' or 'print'
- * (default value is 'display').
- * @property {boolean} renderInteractiveForms - (optional) Whether or not
- * interactive form elements are rendered in the display
- * layer. If so, we do not render them on canvas as well.
- * @property {Array} transform - (optional) Additional transform, applied
- * just before viewport transform.
- * @property {Object} imageLayer - (optional) An object that has beginLayout,
- * endLayout and appendImage functions.
- * @property {function} continueCallback - (deprecated) A function that will be
- * called each time the rendering is paused. To continue
- * rendering call the function that is the first argument
- * to the callback.
- */
-
-/**
- * PDF page operator list.
- *
- * @typedef {Object} PDFOperatorList
- * @property {Array} fnArray - Array containing the operator functions.
- * @property {Array} argsArray - Array containing the arguments of the
- * functions.
- */
-
-/**
- * Proxy to a PDFPage in the worker thread.
- * @class
- * @alias PDFPageProxy
- */
-var PDFPageProxy = (function PDFPageProxyClosure() {
- function PDFPageProxy(pageIndex, pageInfo, transport) {
- this.pageIndex = pageIndex;
- this.pageInfo = pageInfo;
- this.transport = transport;
- this.stats = new StatTimer();
- this.stats.enabled = getDefaultSetting('enableStats');
- this.commonObjs = transport.commonObjs;
- this.objs = new PDFObjects();
- this.cleanupAfterRender = false;
- this.pendingCleanup = false;
- this.intentStates = Object.create(null);
- this.destroyed = false;
- }
- PDFPageProxy.prototype = /** @lends PDFPageProxy.prototype */ {
- /**
- * @return {number} Page number of the page. First page is 1.
- */
- get pageNumber() {
- return this.pageIndex + 1;
- },
- /**
- * @return {number} The number of degrees the page is rotated clockwise.
- */
- get rotate() {
- return this.pageInfo.rotate;
- },
- /**
- * @return {Object} The reference that points to this page. It has 'num' and
- * 'gen' properties.
- */
- get ref() {
- return this.pageInfo.ref;
- },
- /**
- * @return {Array} An array of the visible portion of the PDF page in the
- * user space units - [x1, y1, x2, y2].
- */
- get view() {
- return this.pageInfo.view;
- },
- /**
- * @param {number} scale The desired scale of the viewport.
- * @param {number} rotate Degrees to rotate the viewport. If omitted this
- * defaults to the page rotation.
- * @return {PageViewport} Contains 'width' and 'height' properties
- * along with transforms required for rendering.
- */
- getViewport: function PDFPageProxy_getViewport(scale, rotate) {
- if (arguments.length < 2) {
- rotate = this.rotate;
- }
- return new PageViewport(this.view, scale, rotate, 0, 0);
- },
- /**
- * @param {GetAnnotationsParameters} params - Annotation parameters.
- * @return {Promise} A promise that is resolved with an {Array} of the
- * annotation objects.
- */
- getAnnotations: function PDFPageProxy_getAnnotations(params) {
- var intent = (params && params.intent) || null;
-
- if (!this.annotationsPromise || this.annotationsIntent !== intent) {
- this.annotationsPromise = this.transport.getAnnotations(this.pageIndex,
- intent);
- this.annotationsIntent = intent;
- }
- return this.annotationsPromise;
- },
- /**
- * Begins the process of rendering a page to the desired context.
- * @param {RenderParameters} params Page render parameters.
- * @return {RenderTask} An object that contains the promise, which
- * is resolved when the page finishes rendering.
- */
- render: function PDFPageProxy_render(params) {
- var stats = this.stats;
- stats.time('Overall');
-
- // If there was a pending destroy cancel it so no cleanup happens during
- // this call to render.
- this.pendingCleanup = false;
-
- var renderingIntent = (params.intent === 'print' ? 'print' : 'display');
- var renderInteractiveForms = (params.renderInteractiveForms === true ?
- true : /* Default */ false);
-
- if (!this.intentStates[renderingIntent]) {
- this.intentStates[renderingIntent] = Object.create(null);
- }
- var intentState = this.intentStates[renderingIntent];
-
- // If there's no displayReadyCapability yet, then the operatorList
- // was never requested before. Make the request and create the promise.
- if (!intentState.displayReadyCapability) {
- intentState.receivingOperatorList = true;
- intentState.displayReadyCapability = createPromiseCapability();
- intentState.operatorList = {
- fnArray: [],
- argsArray: [],
- lastChunk: false
- };
-
- this.stats.time('Page Request');
- this.transport.messageHandler.send('RenderPageRequest', {
- pageIndex: this.pageNumber - 1,
- intent: renderingIntent,
- renderInteractiveForms: renderInteractiveForms,
- });
- }
-
- 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.initializeGraphics(transparency);
- internalRenderTask.operatorListChanged();
- },
- function pageDisplayReadPromiseError(reason) {
- complete(reason);
- }
- );
-
- function complete(error) {
- var i = intentState.renderTasks.indexOf(internalRenderTask);
- if (i >= 0) {
- intentState.renderTasks.splice(i, 1);
- }
-
- if (self.cleanupAfterRender) {
- self.pendingCleanup = true;
- }
- self._tryCleanup();
-
- if (error) {
- internalRenderTask.capability.reject(error);
- } else {
- internalRenderTask.capability.resolve();
- }
- stats.timeEnd('Rendering');
- stats.timeEnd('Overall');
- }
-
- return renderTask;
- },
-
- /**
- * @return {Promise} A promise resolved with an {@link PDFOperatorList}
- * object that represents page's operator list.
- */
- getOperatorList: function PDFPageProxy_getOperatorList() {
- function operatorListChanged() {
- if (intentState.operatorList.lastChunk) {
- intentState.opListReadCapability.resolve(intentState.operatorList);
-
- var i = intentState.renderTasks.indexOf(opListTask);
- if (i >= 0) {
- intentState.renderTasks.splice(i, 1);
- }
- }
- }
-
- var renderingIntent = 'oplist';
- if (!this.intentStates[renderingIntent]) {
- this.intentStates[renderingIntent] = Object.create(null);
- }
- var intentState = this.intentStates[renderingIntent];
- var opListTask;
-
- if (!intentState.opListReadCapability) {
- opListTask = {};
- opListTask.operatorListChanged = operatorListChanged;
- intentState.receivingOperatorList = true;
- intentState.opListReadCapability = createPromiseCapability();
- intentState.renderTasks = [];
- intentState.renderTasks.push(opListTask);
- intentState.operatorList = {
- fnArray: [],
- argsArray: [],
- lastChunk: false
- };
-
- this.transport.messageHandler.send('RenderPageRequest', {
- pageIndex: this.pageIndex,
- intent: renderingIntent
- });
- }
- return intentState.opListReadCapability.promise;
- },
-
- /**
- * @param {getTextContentParameters} params - getTextContent parameters.
- * @return {Promise} That is resolved a {@link TextContent}
- * object that represent the page text content.
- */
- getTextContent: function PDFPageProxy_getTextContent(params) {
- return this.transport.messageHandler.sendWithPromise('GetTextContent', {
- pageIndex: this.pageNumber - 1,
- normalizeWhitespace: (params && params.normalizeWhitespace === true ?
- true : /* Default */ false),
- combineTextItems: (params && params.disableCombineTextItems === true ?
- false : /* Default */ true),
- });
- },
-
- /**
- * Destroys page object.
- */
- _destroy: function PDFPageProxy_destroy() {
- this.destroyed = true;
- this.transport.pageCache[this.pageIndex] = null;
-
- var waitOn = [];
- Object.keys(this.intentStates).forEach(function(intent) {
- if (intent === 'oplist') {
- // Avoid errors below, since the renderTasks are just stubs.
- return;
- }
- var intentState = this.intentStates[intent];
- intentState.renderTasks.forEach(function(renderTask) {
- var renderCompleted = renderTask.capability.promise.
- catch(function () {}); // ignoring failures
- waitOn.push(renderCompleted);
- renderTask.cancel();
- });
- }, this);
- this.objs.clear();
- this.annotationsPromise = null;
- this.pendingCleanup = false;
- return Promise.all(waitOn);
- },
-
- /**
- * Cleans up resources allocated by the page. (deprecated)
- */
- destroy: function() {
- deprecated('page destroy method, use cleanup() instead');
- this.cleanup();
- },
-
- /**
- * Cleans up resources allocated by the page.
- */
- cleanup: function PDFPageProxy_cleanup() {
- this.pendingCleanup = true;
- this._tryCleanup();
- },
- /**
- * For internal use only. Attempts to clean up if rendering is in a state
- * where that's possible.
- * @ignore
- */
- _tryCleanup: function PDFPageProxy_tryCleanup() {
- if (!this.pendingCleanup ||
- Object.keys(this.intentStates).some(function(intent) {
- var intentState = this.intentStates[intent];
- return (intentState.renderTasks.length !== 0 ||
- intentState.receivingOperatorList);
- }, this)) {
- return;
- }
-
- Object.keys(this.intentStates).forEach(function(intent) {
- delete this.intentStates[intent];
- }, this);
- this.objs.clear();
- this.annotationsPromise = null;
- this.pendingCleanup = false;
- },
- /**
- * For internal use only.
- * @ignore
- */
- _startRenderPage: function PDFPageProxy_startRenderPage(transparency,
- intent) {
- var intentState = this.intentStates[intent];
- // TODO Refactor RenderPageRequest to separate rendering
- // and operator list logic
- if (intentState.displayReadyCapability) {
- intentState.displayReadyCapability.resolve(transparency);
- }
- },
- /**
- * For internal use only.
- * @ignore
- */
- _renderPageChunk: function PDFPageProxy_renderPageChunk(operatorListChunk,
- intent) {
- var intentState = this.intentStates[intent];
- var i, ii;
- // Add the new chunk to the current operator list.
- for (i = 0, ii = operatorListChunk.length; i < ii; i++) {
- intentState.operatorList.fnArray.push(operatorListChunk.fnArray[i]);
- intentState.operatorList.argsArray.push(
- operatorListChunk.argsArray[i]);
- }
- intentState.operatorList.lastChunk = operatorListChunk.lastChunk;
-
- // Notify all the rendering tasks there are more operators to be consumed.
- for (i = 0; i < intentState.renderTasks.length; i++) {
- intentState.renderTasks[i].operatorListChanged();
- }
-
- if (operatorListChunk.lastChunk) {
- intentState.receivingOperatorList = false;
- this._tryCleanup();
- }
- }
- };
- return PDFPageProxy;
-})();
-
-/**
- * PDF.js web worker abstraction, it controls instantiation of PDF documents and
- * WorkerTransport for them. If creation of a web worker is not possible,
- * a "fake" worker will be used instead.
- * @class
- */
-var PDFWorker = (function PDFWorkerClosure() {
- var nextFakeWorkerId = 0;
-
- function getWorkerSrc() {
- if (typeof workerSrc !== 'undefined') {
- return workerSrc;
- }
- if (getDefaultSetting('workerSrc')) {
- return getDefaultSetting('workerSrc');
- }
- if (pdfjsFilePath) {
- return pdfjsFilePath.replace(/\.js$/i, '.worker.js');
- }
- error('No PDFJS.workerSrc specified');
- }
-
- var fakeWorkerFilesLoadedCapability;
-
- // Loads worker code into main thread.
- function setupFakeWorkerGlobal() {
- var WorkerMessageHandler;
- if (!fakeWorkerFilesLoadedCapability) {
- fakeWorkerFilesLoadedCapability = createPromiseCapability();
- // In the developer build load worker_loader which in turn loads all the
- // other files and resolves the promise. In production only the
- // pdf.worker.js file is needed.
- var loader = fakeWorkerFilesLoader || function (callback) {
- Util.loadScript(getWorkerSrc(), function () {
- callback(window.pdfjsDistBuildPdfWorker.WorkerMessageHandler);
- });
- };
- loader(fakeWorkerFilesLoadedCapability.resolve);
- }
- return fakeWorkerFilesLoadedCapability.promise;
- }
-
- function FakeWorkerPort(defer) {
- this._listeners = [];
- this._defer = defer;
- this._deferred = Promise.resolve(undefined);
- }
- FakeWorkerPort.prototype = {
- postMessage: function (obj, transfers) {
- function cloneValue(value) {
- // Trying to perform a structured clone close to the spec, including
- // transfers.
- if (typeof value !== 'object' || value === null) {
- return value;
- }
- if (cloned.has(value)) { // already cloned the object
- return cloned.get(value);
- }
- var result;
- var buffer;
- if ((buffer = value.buffer) && isArrayBuffer(buffer)) {
- // We found object with ArrayBuffer (typed array).
- var transferable = transfers && transfers.indexOf(buffer) >= 0;
- if (value === buffer) {
- // Special case when we are faking typed arrays in compatibility.js.
- result = value;
- } else if (transferable) {
- result = new value.constructor(buffer, value.byteOffset,
- value.byteLength);
- } else {
- result = new value.constructor(value);
- }
- cloned.set(value, result);
- return result;
- }
- result = isArray(value) ? [] : {};
- cloned.set(value, result); // adding to cache now for cyclic references
- // Cloning all value and object properties, however ignoring properties
- // defined via getter.
- for (var i in value) {
- var desc, p = value;
- while (!(desc = Object.getOwnPropertyDescriptor(p, i))) {
- p = Object.getPrototypeOf(p);
- }
- if (typeof desc.value === 'undefined' ||
- typeof desc.value === 'function') {
- continue;
- }
- result[i] = cloneValue(desc.value);
- }
- return result;
- }
-
- if (!this._defer) {
- this._listeners.forEach(function (listener) {
- listener.call(this, {data: obj});
- }, this);
- return;
- }
-
- var cloned = new WeakMap();
- var e = {data: cloneValue(obj)};
- this._deferred.then(function () {
- this._listeners.forEach(function (listener) {
- listener.call(this, e);
- }, this);
- }.bind(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._listeners = [];
- }
- };
-
- function createCDNWrapper(url) {
- // We will rely on blob URL's property to specify origin.
- // We want this function to fail in case if createObjectURL or Blob do not
- // exist or fail for some reason -- our Worker creation will fail anyway.
- var wrapper = 'importScripts(\'' + url + '\');';
- return URL.createObjectURL(new Blob([wrapper]));
- }
-
- function PDFWorker(name) {
- this.name = name;
- this.destroyed = false;
-
- this._readyCapability = createPromiseCapability();
- this._port = null;
- this._webWorker = null;
- this._messageHandler = null;
- this._initialize();
- }
-
- PDFWorker.prototype = /** @lends PDFWorker.prototype */ {
- get promise() {
- return this._readyCapability.promise;
- },
-
- get port() {
- return this._port;
- },
-
- get messageHandler() {
- return this._messageHandler;
- },
-
- _initialize: function PDFWorker_initialize() {
- // If worker support isn't disabled explicit and the browser has worker
- // support, create a new web worker and test if it/the browser fulfills
- // all requirements to run parts of pdf.js in a web worker.
- // Right now, the requirement is, that an Uint8Array is still an
- // Uint8Array as it arrives on the worker. (Chrome added this with v.15.)
- if (!isWorkerDisabled && !getDefaultSetting('disableWorker') &&
- typeof Worker !== 'undefined') {
- var workerSrc = getWorkerSrc();
-
- try {
- // Wraps workerSrc path into blob URL, if the former does not belong
- // to the same origin.
- if (!isSameOrigin(window.location.href, workerSrc)) {
- workerSrc = createCDNWrapper(
- new URL(workerSrc, window.location).href);
- }
- // Some versions of FF can't create a worker on localhost, see:
- // https://bugzilla.mozilla.org/show_bug.cgi?id=683280
- var worker = new Worker(workerSrc);
- var messageHandler = new MessageHandler('main', 'worker', worker);
- var terminateEarly = function() {
- worker.removeEventListener('error', onWorkerError);
- messageHandler.destroy();
- worker.terminate();
- if (this.destroyed) {
- this._readyCapability.reject(new Error('Worker was destroyed'));
- } else {
- // Fall back to fake worker if the termination is caused by an
- // error (e.g. NetworkError / SecurityError).
- this._setupFakeWorker();
- }
- }.bind(this);
-
- var onWorkerError = function(event) {
- if (!this._webWorker) {
- // Worker failed to initialize due to an error. Clean up and fall
- // back to the fake worker.
- terminateEarly();
- }
- }.bind(this);
- worker.addEventListener('error', onWorkerError);
-
- messageHandler.on('test', function PDFWorker_test(data) {
- worker.removeEventListener('error', onWorkerError);
- if (this.destroyed) {
- terminateEarly();
- return; // worker was destroyed
- }
- var supportTypedArray = data && data.supportTypedArray;
- if (supportTypedArray) {
- this._messageHandler = messageHandler;
- this._port = worker;
- this._webWorker = worker;
- if (!data.supportTransfers) {
- isPostMessageTransfersDisabled = true;
- }
- this._readyCapability.resolve();
- // Send global setting, e.g. verbosity level.
- messageHandler.send('configure', {
- verbosity: getVerbosityLevel()
- });
- } else {
- this._setupFakeWorker();
- messageHandler.destroy();
- worker.terminate();
- }
- }.bind(this));
-
- messageHandler.on('console_log', function (data) {
- console.log.apply(console, data);
- });
- messageHandler.on('console_error', function (data) {
- console.error.apply(console, data);
- });
-
- messageHandler.on('ready', function (data) {
- worker.removeEventListener('error', onWorkerError);
- if (this.destroyed) {
- terminateEarly();
- return; // worker was destroyed
- }
- try {
- sendTest();
- } catch (e) {
- // We need fallback to a faked worker.
- this._setupFakeWorker();
- }
- }.bind(this));
-
- var sendTest = function () {
- var postMessageTransfers =
- getDefaultSetting('postMessageTransfers') &&
- !isPostMessageTransfersDisabled;
- var testObj = new Uint8Array([postMessageTransfers ? 255 : 0]);
- // Some versions of Opera throw a DATA_CLONE_ERR on serializing the
- // typed array. Also, checking if we can use transfers.
- try {
- messageHandler.send('test', testObj, [testObj.buffer]);
- } catch (ex) {
- info('Cannot use postMessage transfers');
- testObj[0] = 0;
- messageHandler.send('test', testObj);
- }
- };
-
- // It might take time for worker to initialize (especially when AMD
- // loader is used). We will try to send test immediately, and then
- // when 'ready' message will arrive. The worker shall process only
- // first received 'test'.
- sendTest();
- return;
- } catch (e) {
- info('The worker has been disabled.');
- }
- }
- // Either workers are disabled, not supported or have thrown an exception.
- // Thus, we fallback to a faked worker.
- this._setupFakeWorker();
- },
-
- _setupFakeWorker: function PDFWorker_setupFakeWorker() {
- if (!isWorkerDisabled && !getDefaultSetting('disableWorker')) {
- warn('Setting up fake worker.');
- isWorkerDisabled = true;
- }
-
- setupFakeWorkerGlobal().then(function (WorkerMessageHandler) {
- if (this.destroyed) {
- this._readyCapability.reject(new Error('Worker was destroyed'));
- return;
- }
-
- // We cannot turn on proper fake port simulation (this includes
- // structured cloning) when typed arrays are not supported. Relying
- // on a chance that messages will be sent in proper order.
- var isTypedArraysPresent = Uint8Array !== Float32Array;
- var port = new FakeWorkerPort(isTypedArraysPresent);
- this._port = port;
-
- // All fake workers use the same port, making id unique.
- var id = 'fake' + (nextFakeWorkerId++);
-
- // If the main thread is our worker, setup the handling for the
- // messages -- the main thread sends to it self.
- var workerHandler = new MessageHandler(id + '_worker', id, port);
- WorkerMessageHandler.setup(workerHandler, port);
-
- var messageHandler = new MessageHandler(id, id + '_worker', port);
- this._messageHandler = messageHandler;
- this._readyCapability.resolve();
- }.bind(this));
- },
-
- /**
- * Destroys the worker instance.
- */
- destroy: function PDFWorker_destroy() {
- this.destroyed = true;
- if (this._webWorker) {
- // We need to terminate only web worker created resource.
- this._webWorker.terminate();
- this._webWorker = null;
- }
- this._port = null;
- if (this._messageHandler) {
- this._messageHandler.destroy();
- this._messageHandler = null;
- }
- }
- };
-
- return PDFWorker;
-})();
-
-/**
- * For internal use only.
- * @ignore
- */
-var WorkerTransport = (function WorkerTransportClosure() {
- function WorkerTransport(messageHandler, loadingTask, pdfDataRangeTransport) {
- this.messageHandler = messageHandler;
- this.loadingTask = loadingTask;
- this.pdfDataRangeTransport = pdfDataRangeTransport;
- this.commonObjs = new PDFObjects();
- this.fontLoader = new FontLoader(loadingTask.docId);
-
- this.destroyed = false;
- this.destroyCapability = null;
-
- this.pageCache = [];
- this.pagePromises = [];
- this.downloadInfoCapability = createPromiseCapability();
-
- this.setupMessageHandler();
- }
- WorkerTransport.prototype = {
- destroy: function WorkerTransport_destroy() {
- if (this.destroyCapability) {
- return this.destroyCapability.promise;
- }
-
- this.destroyed = true;
- this.destroyCapability = createPromiseCapability();
-
- var waitOn = [];
- // We need to wait for all renderings to be completed, e.g.
- // timeout/rAF can take a long time.
- this.pageCache.forEach(function (page) {
- if (page) {
- waitOn.push(page._destroy());
- }
- });
- this.pageCache = [];
- this.pagePromises = [];
- var self = this;
- // We also need to wait for the worker to finish its long running tasks.
- var terminated = this.messageHandler.sendWithPromise('Terminate', null);
- waitOn.push(terminated);
- Promise.all(waitOn).then(function () {
- self.fontLoader.clear();
- if (self.pdfDataRangeTransport) {
- self.pdfDataRangeTransport.abort();
- self.pdfDataRangeTransport = null;
- }
- if (self.messageHandler) {
- self.messageHandler.destroy();
- self.messageHandler = null;
- }
- self.destroyCapability.resolve();
- }, this.destroyCapability.reject);
- return this.destroyCapability.promise;
- },
-
- setupMessageHandler:
- function WorkerTransport_setupMessageHandler() {
- var messageHandler = this.messageHandler;
-
- function updatePassword(password) {
- messageHandler.send('UpdatePassword', password);
- }
-
- var pdfDataRangeTransport = this.pdfDataRangeTransport;
- if (pdfDataRangeTransport) {
- pdfDataRangeTransport.addRangeListener(function(begin, chunk) {
- messageHandler.send('OnDataRange', {
- begin: begin,
- chunk: chunk
- });
- });
-
- pdfDataRangeTransport.addProgressListener(function(loaded) {
- messageHandler.send('OnDataProgress', {
- loaded: loaded
- });
- });
-
- pdfDataRangeTransport.addProgressiveReadListener(function(chunk) {
- messageHandler.send('OnDataRange', {
- chunk: chunk
- });
- });
-
- messageHandler.on('RequestDataRange',
- function transportDataRange(data) {
- pdfDataRangeTransport.requestDataRange(data.begin, data.end);
- }, this);
- }
-
- messageHandler.on('GetDoc', function transportDoc(data) {
- var pdfInfo = data.pdfInfo;
- this.numPages = data.pdfInfo.numPages;
- var loadingTask = this.loadingTask;
- var pdfDocument = new PDFDocumentProxy(pdfInfo, this, loadingTask);
- this.pdfDocument = pdfDocument;
- loadingTask._capability.resolve(pdfDocument);
- }, this);
-
- messageHandler.on('NeedPassword',
- function transportNeedPassword(exception) {
- var loadingTask = this.loadingTask;
- if (loadingTask.onPassword) {
- return loadingTask.onPassword(updatePassword,
- PasswordResponses.NEED_PASSWORD);
- }
- loadingTask._capability.reject(
- new PasswordException(exception.message, exception.code));
- }, this);
-
- messageHandler.on('IncorrectPassword',
- function transportIncorrectPassword(exception) {
- var loadingTask = this.loadingTask;
- if (loadingTask.onPassword) {
- return loadingTask.onPassword(updatePassword,
- PasswordResponses.INCORRECT_PASSWORD);
- }
- loadingTask._capability.reject(
- new PasswordException(exception.message, exception.code));
- }, this);
-
- messageHandler.on('InvalidPDF', function transportInvalidPDF(exception) {
- this.loadingTask._capability.reject(
- new InvalidPDFException(exception.message));
- }, this);
-
- messageHandler.on('MissingPDF', function transportMissingPDF(exception) {
- this.loadingTask._capability.reject(
- new MissingPDFException(exception.message));
- }, this);
-
- messageHandler.on('UnexpectedResponse',
- function transportUnexpectedResponse(exception) {
- this.loadingTask._capability.reject(
- new UnexpectedResponseException(exception.message, exception.status));
- }, this);
-
- messageHandler.on('UnknownError',
- function transportUnknownError(exception) {
- this.loadingTask._capability.reject(
- new UnknownErrorException(exception.message, exception.details));
- }, this);
-
- messageHandler.on('DataLoaded', function transportPage(data) {
- this.downloadInfoCapability.resolve(data);
- }, this);
-
- messageHandler.on('PDFManagerReady', function transportPage(data) {
- if (this.pdfDataRangeTransport) {
- this.pdfDataRangeTransport.transportReady();
- }
- }, this);
-
- messageHandler.on('StartRenderPage', function transportRender(data) {
- if (this.destroyed) {
- return; // Ignore any pending requests if the worker was terminated.
- }
- var page = this.pageCache[data.pageIndex];
-
- page.stats.timeEnd('Page Request');
- page._startRenderPage(data.transparency, data.intent);
- }, this);
-
- messageHandler.on('RenderPageChunk', function transportRender(data) {
- if (this.destroyed) {
- return; // Ignore any pending requests if the worker was terminated.
- }
- var page = this.pageCache[data.pageIndex];
-
- page._renderPageChunk(data.operatorList, data.intent);
- }, this);
-
- messageHandler.on('commonobj', function transportObj(data) {
- if (this.destroyed) {
- return; // Ignore any pending requests if the worker was terminated.
- }
-
- var id = data[0];
- var type = data[1];
- if (this.commonObjs.hasData(id)) {
- return;
- }
-
- switch (type) {
- case 'Font':
- var exportedData = data[2];
-
- if ('error' in exportedData) {
- var exportedError = exportedData.error;
- warn('Error during font loading: ' + exportedError);
- this.commonObjs.resolve(id, exportedError);
- break;
- }
- var fontRegistry = null;
- if (getDefaultSetting('pdfBug') && globalScope.FontInspector &&
- globalScope['FontInspector'].enabled) {
- fontRegistry = {
- registerFont: function (font, url) {
- globalScope['FontInspector'].fontAdded(font, url);
- }
- };
- }
- var font = new FontFaceObject(exportedData, {
- isEvalSuported: getDefaultSetting('isEvalSupported'),
- disableFontFace: getDefaultSetting('disableFontFace'),
- fontRegistry: fontRegistry
- });
-
- this.fontLoader.bind(
- [font],
- function fontReady(fontObjs) {
- this.commonObjs.resolve(id, font);
- }.bind(this)
- );
- break;
- case 'FontPath':
- this.commonObjs.resolve(id, data[2]);
- break;
- default:
- error('Got unknown common object type ' + type);
- }
- }, this);
-
- messageHandler.on('obj', function transportObj(data) {
- if (this.destroyed) {
- return; // Ignore any pending requests if the worker was terminated.
- }
-
- var id = data[0];
- var pageIndex = data[1];
- var type = data[2];
- var pageProxy = this.pageCache[pageIndex];
- var imageData;
- if (pageProxy.objs.hasData(id)) {
- return;
- }
-
- switch (type) {
- case 'JpegStream':
- imageData = data[3];
- loadJpegStream(id, imageData, pageProxy.objs);
- break;
- case 'Image':
- imageData = data[3];
- pageProxy.objs.resolve(id, imageData);
-
- // heuristics that will allow not to store large data
- var MAX_IMAGE_SIZE_TO_STORE = 8000000;
- if (imageData && 'data' in imageData &&
- imageData.data.length > MAX_IMAGE_SIZE_TO_STORE) {
- pageProxy.cleanupAfterRender = true;
- }
- break;
- default:
- error('Got unknown object type ' + type);
- }
- }, this);
-
- messageHandler.on('DocProgress', function transportDocProgress(data) {
- if (this.destroyed) {
- return; // Ignore any pending requests if the worker was terminated.
- }
-
- var loadingTask = this.loadingTask;
- if (loadingTask.onProgress) {
- loadingTask.onProgress({
- loaded: data.loaded,
- total: data.total
- });
- }
- }, this);
-
- messageHandler.on('PageError', function transportError(data) {
- if (this.destroyed) {
- return; // Ignore any pending requests if the worker was terminated.
- }
-
- var page = this.pageCache[data.pageNum - 1];
- var intentState = page.intentStates[data.intent];
-
- if (intentState.displayReadyCapability) {
- intentState.displayReadyCapability.reject(data.error);
- } else {
- error(data.error);
- }
-
- if (intentState.operatorList) {
- // Mark operator list as complete.
- intentState.operatorList.lastChunk = true;
- for (var i = 0; i < intentState.renderTasks.length; i++) {
- intentState.renderTasks[i].operatorListChanged();
- }
- }
- }, this);
-
- messageHandler.on('UnsupportedFeature',
- function transportUnsupportedFeature(data) {
- if (this.destroyed) {
- return; // Ignore any pending requests if the worker was terminated.
- }
- var featureId = data.featureId;
- var loadingTask = this.loadingTask;
- if (loadingTask.onUnsupportedFeature) {
- loadingTask.onUnsupportedFeature(featureId);
- }
- _UnsupportedManager.notify(featureId);
- }, this);
-
- messageHandler.on('JpegDecode', function(data) {
- if (this.destroyed) {
- return Promise.reject(new Error('Worker was destroyed'));
- }
-
- 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 (!isInt(pageNumber) || pageNumber <= 0 || pageNumber > this.numPages) {
- 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,
- }).catch(function (reason) {
- return Promise.reject(new Error(reason));
- });
- },
-
- getAnnotations: function WorkerTransport_getAnnotations(pageIndex, intent) {
- return this.messageHandler.sendWithPromise('GetAnnotations', {
- pageIndex: pageIndex,
- intent: intent,
- });
- },
-
- getDestinations: function WorkerTransport_getDestinations() {
- return this.messageHandler.sendWithPromise('GetDestinations', null);
- },
-
- getDestination: function WorkerTransport_getDestination(id) {
- return this.messageHandler.sendWithPromise('GetDestination', { id: id });
- },
-
- getPageLabels: function WorkerTransport_getPageLabels() {
- return this.messageHandler.sendWithPromise('GetPageLabels', null);
- },
-
- getAttachments: function WorkerTransport_getAttachments() {
- return this.messageHandler.sendWithPromise('GetAttachments', null);
- },
-
- getJavaScript: function WorkerTransport_getJavaScript() {
- return this.messageHandler.sendWithPromise('GetJavaScript', null);
- },
-
- getOutline: function WorkerTransport_getOutline() {
- return this.messageHandler.sendWithPromise('GetOutline', null);
- },
-
- getMetadata: function WorkerTransport_getMetadata() {
- return this.messageHandler.sendWithPromise('GetMetadata', null).
- then(function transportMetadata(results) {
- return {
- info: results[0],
- metadata: (results[1] ? new Metadata(results[1]) : null)
- };
- });
- },
-
- getStats: function WorkerTransport_getStats() {
- return this.messageHandler.sendWithPromise('GetStats', null);
- },
-
- startCleanup: function WorkerTransport_startCleanup() {
- this.messageHandler.sendWithPromise('Cleanup', null).
- then(function endCleanup() {
- for (var i = 0, ii = this.pageCache.length; i < ii; i++) {
- var page = this.pageCache[i];
- if (page) {
- page.cleanup();
- }
- }
- this.commonObjs.clear();
- this.fontLoader.clear();
- }.bind(this));
- }
- };
- return WorkerTransport;
-
-})();
-
-/**
- * A PDF document and page is built of many objects. E.g. there are objects
- * for fonts, images, rendering code and such. These objects might get processed
- * inside of a worker. The `PDFObjects` implements some basic functions to
- * manage these objects.
- * @ignore
- */
-var PDFObjects = (function PDFObjectsClosure() {
- function PDFObjects() {
- this.objs = Object.create(null);
- }
-
- PDFObjects.prototype = {
- /**
- * Internal function.
- * Ensures there is an object defined for `objId`.
- */
- ensureObj: function PDFObjects_ensureObj(objId) {
- if (this.objs[objId]) {
- return this.objs[objId];
- }
-
- var obj = {
- capability: createPromiseCapability(),
- data: null,
- resolved: false
- };
- this.objs[objId] = obj;
-
- return obj;
- },
-
- /**
- * If called *without* callback, this returns the data of `objId` but the
- * object needs to be resolved. If it isn't, this function throws.
- *
- * If called *with* a callback, the callback is called with the data of the
- * object once the object is resolved. That means, if you call this
- * function and the object is already resolved, the callback gets called
- * right away.
- */
- get: function PDFObjects_get(objId, callback) {
- // If there is a callback, then the get can be async and the object is
- // not required to be resolved right now
- if (callback) {
- this.ensureObj(objId).capability.promise.then(callback);
- return null;
- }
-
- // If there isn't a callback, the user expects to get the resolved data
- // directly.
- var obj = this.objs[objId];
-
- // If there isn't an object yet or the object isn't resolved, then the
- // data isn't ready yet!
- if (!obj || !obj.resolved) {
- error('Requesting object that isn\'t resolved yet ' + objId);
- }
-
- return obj.data;
- },
-
- /**
- * Resolves the object `objId` with optional `data`.
- */
- resolve: function PDFObjects_resolve(objId, data) {
- var obj = this.ensureObj(objId);
-
- obj.resolved = true;
- obj.data = data;
- obj.capability.resolve(data);
- },
-
- isResolved: function PDFObjects_isResolved(objId) {
- var objs = this.objs;
-
- if (!objs[objId]) {
- return false;
- } else {
- return objs[objId].resolved;
- }
- },
-
- hasData: function PDFObjects_hasData(objId) {
- return this.isResolved(objId);
- },
-
- /**
- * Returns the data of `objId` if object exists, null otherwise.
- */
- getData: function PDFObjects_getData(objId) {
- var objs = this.objs;
- if (!objs[objId] || !objs[objId].resolved) {
- return null;
- } else {
- return objs[objId].data;
- }
- },
-
- clear: function PDFObjects_clear() {
- this.objs = Object.create(null);
- }
- };
- return PDFObjects;
-})();
-
-/**
- * Allows controlling of the rendering tasks.
- * @class
- * @alias RenderTask
- */
-var RenderTask = (function RenderTaskClosure() {
- function RenderTask(internalRenderTask) {
- this._internalRenderTask = internalRenderTask;
-
- /**
- * Callback for incremental rendering -- a function that will be called
- * each time the rendering is paused. To continue rendering call the
- * function that is the first argument to the callback.
- * @type {function}
- */
- this.onContinue = null;
- }
-
- RenderTask.prototype = /** @lends RenderTask.prototype */ {
- /**
- * Promise for rendering task completion.
- * @return {Promise}
- */
- get promise() {
- return this._internalRenderTask.capability.promise;
- },
-
- /**
- * Cancels the rendering task. If the task is currently rendering it will
- * not be cancelled until graphics pauses with a timeout. The promise that
- * this object extends will resolved when cancelled.
- */
- cancel: function RenderTask_cancel() {
- this._internalRenderTask.cancel();
- },
-
- /**
- * Registers callbacks to indicate the rendering task completion.
- *
- * @param {function} onFulfilled The callback for the rendering completion.
- * @param {function} onRejected The callback for the rendering failure.
- * @return {Promise} A promise that is resolved after the onFulfilled or
- * onRejected callback.
- */
- then: function RenderTask_then(onFulfilled, onRejected) {
- return this.promise.then.apply(this.promise, arguments);
- }
- };
-
- return RenderTask;
-})();
-
-/**
- * For internal use only.
- * @ignore
- */
-var InternalRenderTask = (function InternalRenderTaskClosure() {
-
- function InternalRenderTask(callback, params, objs, commonObjs, operatorList,
- pageNumber) {
- this.callback = callback;
- this.params = params;
- this.objs = objs;
- this.commonObjs = commonObjs;
- this.operatorListIdx = null;
- this.operatorList = operatorList;
- this.pageNumber = pageNumber;
- this.running = false;
- this.graphicsReadyCallback = null;
- this.graphicsReady = false;
- this.useRequestAnimationFrame = false;
- this.cancelled = false;
- this.capability = createPromiseCapability();
- this.task = new RenderTask(this);
- // caching this-bound methods
- this._continueBound = this._continue.bind(this);
- this._scheduleNextBound = this._scheduleNext.bind(this);
- this._nextBound = this._next.bind(this);
- }
-
- InternalRenderTask.prototype = {
-
- initializeGraphics:
- function InternalRenderTask_initializeGraphics(transparency) {
-
- if (this.cancelled) {
- return;
- }
- if (getDefaultSetting('pdfBug') && globalScope.StepperManager &&
- globalScope.StepperManager.enabled) {
- this.stepper = globalScope.StepperManager.create(this.pageNumber - 1);
- this.stepper.init(this.operatorList);
- this.stepper.nextBreakPoint = this.stepper.getNextBreakPoint();
- }
-
- var params = this.params;
- this.gfx = new CanvasGraphics(params.canvasContext, this.commonObjs,
- this.objs, params.imageLayer);
-
- this.gfx.beginDrawing(params.transform, params.viewport, transparency);
- this.operatorListIdx = 0;
- this.graphicsReady = true;
- if (this.graphicsReadyCallback) {
- this.graphicsReadyCallback();
- }
- },
-
- cancel: function InternalRenderTask_cancel() {
- this.running = false;
- this.cancelled = true;
- this.callback('cancelled');
- },
-
- operatorListChanged: function InternalRenderTask_operatorListChanged() {
- if (!this.graphicsReady) {
- if (!this.graphicsReadyCallback) {
- this.graphicsReadyCallback = this._continueBound;
- }
- return;
- }
-
- if (this.stepper) {
- this.stepper.updateOperatorList(this.operatorList);
- }
-
- if (this.running) {
- return;
- }
- this._continue();
- },
-
- _continue: function InternalRenderTask__continue() {
- this.running = true;
- if (this.cancelled) {
- return;
- }
- if (this.task.onContinue) {
- this.task.onContinue.call(this.task, this._scheduleNextBound);
- } else {
- this._scheduleNext();
- }
- },
-
- _scheduleNext: function InternalRenderTask__scheduleNext() {
- if (this.useRequestAnimationFrame && typeof window !== 'undefined') {
- window.requestAnimationFrame(this._nextBound);
- } else {
- Promise.resolve(undefined).then(this._nextBound);
- }
- },
-
- _next: function InternalRenderTask__next() {
- if (this.cancelled) {
- return;
- }
- this.operatorListIdx = this.gfx.executeOperatorList(this.operatorList,
- this.operatorListIdx,
- this._continueBound,
- this.stepper);
- if (this.operatorListIdx === this.operatorList.argsArray.length) {
- this.running = false;
- if (this.operatorList.lastChunk) {
- this.gfx.endDrawing();
- this.callback();
- }
- }
- }
-
- };
-
- return InternalRenderTask;
-})();
-
-/**
- * (Deprecated) Global observer of unsupported feature usages. Use
- * onUnsupportedFeature callback of the {PDFDocumentLoadingTask} instance.
- */
-var _UnsupportedManager = (function UnsupportedManagerClosure() {
- var listeners = [];
- return {
- listen: function (cb) {
- deprecated('Global UnsupportedManager.listen is used: ' +
- ' use PDFDocumentLoadingTask.onUnsupportedFeature instead');
- listeners.push(cb);
- },
- notify: function (featureId) {
- for (var i = 0, ii = listeners.length; i < ii; i++) {
- listeners[i](featureId);
- }
- }
- };
-})();
-
-if (typeof pdfjsVersion !== 'undefined') {
- exports.version = pdfjsVersion;
-}
-if (typeof pdfjsBuild !== 'undefined') {
- exports.build = pdfjsBuild;
-}
-
-exports.getDocument = getDocument;
-exports.PDFDataRangeTransport = PDFDataRangeTransport;
-exports.PDFWorker = PDFWorker;
-exports.PDFDocumentProxy = PDFDocumentProxy;
-exports.PDFPageProxy = PDFPageProxy;
-exports._UnsupportedManager = _UnsupportedManager;
-}));
-
-
-(function (root, factory) {
- {
- factory((root.pdfjsDisplayGlobal = {}), root.pdfjsSharedUtil,
- root.pdfjsDisplayDOMUtils, root.pdfjsDisplayAPI,
- root.pdfjsDisplayAnnotationLayer, root.pdfjsDisplayTextLayer,
- root.pdfjsDisplayMetadata, root.pdfjsDisplaySVG);
- }
-}(this, function (exports, sharedUtil, displayDOMUtils, displayAPI,
- displayAnnotationLayer, displayTextLayer, displayMetadata,
- displaySVG) {
-
- var globalScope = sharedUtil.globalScope;
- var deprecated = sharedUtil.deprecated;
- var warn = sharedUtil.warn;
- var LinkTarget = displayDOMUtils.LinkTarget;
-
- var isWorker = (typeof window === 'undefined');
-
- // The global PDFJS object is now deprecated and will not be supported in
- // the future. The members below are maintained for backward compatibility
- // and shall not be extended or modified. If the global.js is included as
- // a module, we will create a global PDFJS object instance or use existing.
- if (!globalScope.PDFJS) {
- globalScope.PDFJS = {};
- }
- var PDFJS = globalScope.PDFJS;
-
- if (typeof pdfjsVersion !== 'undefined') {
- PDFJS.version = pdfjsVersion;
- }
- if (typeof pdfjsBuild !== 'undefined') {
- PDFJS.build = pdfjsBuild;
- }
-
- PDFJS.pdfBug = false;
-
- if (PDFJS.verbosity !== undefined) {
- sharedUtil.setVerbosityLevel(PDFJS.verbosity);
- }
- delete PDFJS.verbosity;
- Object.defineProperty(PDFJS, 'verbosity', {
- get: function () { return sharedUtil.getVerbosityLevel(); },
- set: function (level) { sharedUtil.setVerbosityLevel(level); },
- enumerable: true,
- configurable: true
- });
-
- PDFJS.VERBOSITY_LEVELS = sharedUtil.VERBOSITY_LEVELS;
- PDFJS.OPS = sharedUtil.OPS;
- PDFJS.UNSUPPORTED_FEATURES = sharedUtil.UNSUPPORTED_FEATURES;
- PDFJS.isValidUrl = sharedUtil.isValidUrl;
- PDFJS.shadow = sharedUtil.shadow;
- PDFJS.createBlob = sharedUtil.createBlob;
- PDFJS.createObjectURL = function PDFJS_createObjectURL(data, contentType) {
- return sharedUtil.createObjectURL(data, contentType,
- PDFJS.disableCreateObjectURL);
- };
- Object.defineProperty(PDFJS, 'isLittleEndian', {
- configurable: true,
- get: function PDFJS_isLittleEndian() {
- var value = sharedUtil.isLittleEndian();
- return sharedUtil.shadow(PDFJS, 'isLittleEndian', value);
- }
- });
- PDFJS.removeNullCharacters = sharedUtil.removeNullCharacters;
- PDFJS.PasswordResponses = sharedUtil.PasswordResponses;
- PDFJS.PasswordException = sharedUtil.PasswordException;
- PDFJS.UnknownErrorException = sharedUtil.UnknownErrorException;
- PDFJS.InvalidPDFException = sharedUtil.InvalidPDFException;
- PDFJS.MissingPDFException = sharedUtil.MissingPDFException;
- PDFJS.UnexpectedResponseException = sharedUtil.UnexpectedResponseException;
- PDFJS.Util = sharedUtil.Util;
- PDFJS.PageViewport = sharedUtil.PageViewport;
- PDFJS.createPromiseCapability = sharedUtil.createPromiseCapability;
-
- /**
- * The maximum allowed image size in total pixels e.g. width * height. Images
- * above this value will not be drawn. Use -1 for no limit.
- * @var {number}
- */
- PDFJS.maxImageSize = (PDFJS.maxImageSize === undefined ?
- -1 : PDFJS.maxImageSize);
-
- /**
- * The url of where the predefined Adobe CMaps are located. Include trailing
- * slash.
- * @var {string}
- */
- PDFJS.cMapUrl = (PDFJS.cMapUrl === undefined ? null : PDFJS.cMapUrl);
-
- /**
- * Specifies if CMaps are binary packed.
- * @var {boolean}
- */
- PDFJS.cMapPacked = PDFJS.cMapPacked === undefined ? false : PDFJS.cMapPacked;
-
- /**
- * By default fonts are converted to OpenType fonts and loaded via font face
- * rules. If disabled, the font will be rendered using a built in font
- * renderer that constructs the glyphs with primitive path commands.
- * @var {boolean}
- */
- PDFJS.disableFontFace = (PDFJS.disableFontFace === undefined ?
- false : PDFJS.disableFontFace);
-
- /**
- * Path for image resources, mainly for annotation icons. Include trailing
- * slash.
- * @var {string}
- */
- PDFJS.imageResourcesPath = (PDFJS.imageResourcesPath === undefined ?
- '' : PDFJS.imageResourcesPath);
-
- /**
- * Disable the web worker and run all code on the main thread. This will
- * happen automatically if the browser doesn't support workers or sending
- * typed arrays to workers.
- * @var {boolean}
- */
- PDFJS.disableWorker = (PDFJS.disableWorker === undefined ?
- false : PDFJS.disableWorker);
-
- /**
- * Path and filename of the worker file. Required when the worker is enabled
- * in development mode. If unspecified in the production build, the worker
- * will be loaded based on the location of the pdf.js file. It is recommended
- * that the workerSrc is set in a custom application to prevent issues caused
- * by third-party frameworks and libraries.
- * @var {string}
- */
- PDFJS.workerSrc = (PDFJS.workerSrc === undefined ? null : PDFJS.workerSrc);
-
- /**
- * Disable range request loading of PDF files. When enabled and if the server
- * supports partial content requests then the PDF will be fetched in chunks.
- * Enabled (false) by default.
- * @var {boolean}
- */
- PDFJS.disableRange = (PDFJS.disableRange === undefined ?
- false : PDFJS.disableRange);
-
- /**
- * Disable streaming of PDF file data. By default PDF.js attempts to load PDF
- * in chunks. This default behavior can be disabled.
- * @var {boolean}
- */
- PDFJS.disableStream = (PDFJS.disableStream === undefined ?
- false : PDFJS.disableStream);
-
- /**
- * Disable pre-fetching of PDF file data. When range requests are enabled
- * PDF.js will automatically keep fetching more data even if it isn't needed
- * to display the current page. This default behavior can be disabled.
- *
- * NOTE: It is also necessary to disable streaming, see above,
- * in order for disabling of pre-fetching to work correctly.
- * @var {boolean}
- */
- PDFJS.disableAutoFetch = (PDFJS.disableAutoFetch === undefined ?
- false : PDFJS.disableAutoFetch);
-
- /**
- * Enables special hooks for debugging PDF.js.
- * @var {boolean}
- */
- PDFJS.pdfBug = (PDFJS.pdfBug === undefined ? false : PDFJS.pdfBug);
-
- /**
- * Enables transfer usage in postMessage for ArrayBuffers.
- * @var {boolean}
- */
- PDFJS.postMessageTransfers = (PDFJS.postMessageTransfers === undefined ?
- true : PDFJS.postMessageTransfers);
-
- /**
- * Disables URL.createObjectURL usage.
- * @var {boolean}
- */
- PDFJS.disableCreateObjectURL = (PDFJS.disableCreateObjectURL === undefined ?
- false : PDFJS.disableCreateObjectURL);
-
- /**
- * Disables WebGL usage.
- * @var {boolean}
- */
- PDFJS.disableWebGL = (PDFJS.disableWebGL === undefined ?
- true : PDFJS.disableWebGL);
-
- /**
- * Specifies the |target| attribute for external links.
- * The constants from PDFJS.LinkTarget should be used:
- * - NONE [default]
- * - SELF
- * - BLANK
- * - PARENT
- * - TOP
- * @var {number}
- */
- PDFJS.externalLinkTarget = (PDFJS.externalLinkTarget === undefined ?
- LinkTarget.NONE : PDFJS.externalLinkTarget);
-
- /**
- * Specifies the |rel| attribute for external links. Defaults to stripping
- * the referrer.
- * @var {string}
- */
- PDFJS.externalLinkRel = (PDFJS.externalLinkRel === undefined ?
- 'noreferrer' : PDFJS.externalLinkRel);
-
- /**
- * Determines if we can eval strings as JS. Primarily used to improve
- * performance for font rendering.
- * @var {boolean}
- */
- PDFJS.isEvalSupported = (PDFJS.isEvalSupported === undefined ?
- true : PDFJS.isEvalSupported);
-
- var savedOpenExternalLinksInNewWindow = PDFJS.openExternalLinksInNewWindow;
- delete PDFJS.openExternalLinksInNewWindow;
- Object.defineProperty(PDFJS, 'openExternalLinksInNewWindow', {
- get: function () {
- return PDFJS.externalLinkTarget === LinkTarget.BLANK;
- },
- set: function (value) {
- if (value) {
- deprecated('PDFJS.openExternalLinksInNewWindow, please use ' +
- '"PDFJS.externalLinkTarget = PDFJS.LinkTarget.BLANK" instead.');
- }
- if (PDFJS.externalLinkTarget !== LinkTarget.NONE) {
- warn('PDFJS.externalLinkTarget is already initialized');
- return;
- }
- PDFJS.externalLinkTarget = value ? LinkTarget.BLANK : LinkTarget.NONE;
- },
- enumerable: true,
- configurable: true
- });
- if (savedOpenExternalLinksInNewWindow) {
- /**
- * (Deprecated) Opens external links in a new window if enabled.
- * The default behavior opens external links in the PDF.js window.
- *
- * NOTE: This property has been deprecated, please use
- * `PDFJS.externalLinkTarget = PDFJS.LinkTarget.BLANK` instead.
- * @var {boolean}
- */
- PDFJS.openExternalLinksInNewWindow = savedOpenExternalLinksInNewWindow;
- }
-
- PDFJS.getDocument = displayAPI.getDocument;
- PDFJS.PDFDataRangeTransport = displayAPI.PDFDataRangeTransport;
- PDFJS.PDFWorker = displayAPI.PDFWorker;
-
- Object.defineProperty(PDFJS, 'hasCanvasTypedArrays', {
- configurable: true,
- get: function PDFJS_hasCanvasTypedArrays() {
- var value = displayDOMUtils.hasCanvasTypedArrays();
- return sharedUtil.shadow(PDFJS, 'hasCanvasTypedArrays', value);
- }
- });
- PDFJS.CustomStyle = displayDOMUtils.CustomStyle;
- PDFJS.LinkTarget = LinkTarget;
- PDFJS.addLinkAttributes = displayDOMUtils.addLinkAttributes;
- PDFJS.getFilenameFromUrl = displayDOMUtils.getFilenameFromUrl;
- PDFJS.isExternalLinkTargetSet = displayDOMUtils.isExternalLinkTargetSet;
-
- PDFJS.AnnotationLayer = displayAnnotationLayer.AnnotationLayer;
-
- PDFJS.renderTextLayer = displayTextLayer.renderTextLayer;
-
- PDFJS.Metadata = displayMetadata.Metadata;
-
- PDFJS.SVGGraphics = displaySVG.SVGGraphics;
-
- PDFJS.UnsupportedManager = displayAPI._UnsupportedManager;
-
- exports.globalScope = globalScope;
- exports.isWorker = isWorker;
- exports.PDFJS = globalScope.PDFJS;
-}));
- }).call(pdfjsLibs);
-
- exports.PDFJS = pdfjsLibs.pdfjsDisplayGlobal.PDFJS;
- exports.build = pdfjsLibs.pdfjsDisplayAPI.build;
- exports.version = pdfjsLibs.pdfjsDisplayAPI.version;
- exports.getDocument = pdfjsLibs.pdfjsDisplayAPI.getDocument;
- exports.PDFDataRangeTransport =
- pdfjsLibs.pdfjsDisplayAPI.PDFDataRangeTransport;
- exports.PDFWorker = pdfjsLibs.pdfjsDisplayAPI.PDFWorker;
- exports.renderTextLayer = pdfjsLibs.pdfjsDisplayTextLayer.renderTextLayer;
- exports.AnnotationLayer =
- pdfjsLibs.pdfjsDisplayAnnotationLayer.AnnotationLayer;
- exports.CustomStyle = pdfjsLibs.pdfjsDisplayDOMUtils.CustomStyle;
- exports.PasswordResponses = pdfjsLibs.pdfjsSharedUtil.PasswordResponses;
- exports.InvalidPDFException = pdfjsLibs.pdfjsSharedUtil.InvalidPDFException;
- exports.MissingPDFException = pdfjsLibs.pdfjsSharedUtil.MissingPDFException;
- exports.SVGGraphics = pdfjsLibs.pdfjsDisplaySVG.SVGGraphics;
- exports.UnexpectedResponseException =
- pdfjsLibs.pdfjsSharedUtil.UnexpectedResponseException;
- exports.OPS = pdfjsLibs.pdfjsSharedUtil.OPS;
- exports.UNSUPPORTED_FEATURES = pdfjsLibs.pdfjsSharedUtil.UNSUPPORTED_FEATURES;
- exports.isValidUrl = pdfjsLibs.pdfjsSharedUtil.isValidUrl;
- exports.createObjectURL = pdfjsLibs.pdfjsSharedUtil.createObjectURL;
- exports.removeNullCharacters = pdfjsLibs.pdfjsSharedUtil.removeNullCharacters;
- exports.shadow = pdfjsLibs.pdfjsSharedUtil.shadow;
- exports.createBlob = pdfjsLibs.pdfjsSharedUtil.createBlob;
- exports.getFilenameFromUrl =
- pdfjsLibs.pdfjsDisplayDOMUtils.getFilenameFromUrl;
- exports.addLinkAttributes = pdfjsLibs.pdfjsDisplayDOMUtils.addLinkAttributes;
-}));
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-19 19:31:32 +0000