/* 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.
*/
(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 = '1.6.268';
var pdfjsBuild = 'a28a710';
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;
}
// Checks if URLs use one of the whitelisted protocols, e.g. to avoid XSS.
function isValidProtocol(url) {
if (!url) {
return false;
}
switch (url.protocol) {
case 'http:':
case 'https:':
case 'ftp:':
case 'mailto:':
case 'tel:':
return true;
default:
return false;
}
}
/**
* Attempts to create a valid absolute URL (utilizing `isValidProtocol`).
* @param {URL|string} url - An absolute, or relative, URL.
* @param {URL|string} baseUrl - An absolute URL.
* @returns Either a valid {URL}, or `null` otherwise.
*/
function createValidAbsoluteUrl(url, baseUrl) {
if (!url) {
return null;
}
try {
var absoluteUrl = baseUrl ? new URL(url, baseUrl) : new URL(url);
if (isValidProtocol(absoluteUrl)) {
return absoluteUrl;
}
} catch (ex) {
}
return null;
}
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 {
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, getArray) {
while (dict && !dict.has(name)) {
dict = dict.get('Parent');
}
if (!dict) {
return null;
}
return getArray ? dict.getArray(name) : 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);
}
};
var Promise = 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();
} else // ASCII-safe
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.createValidAbsoluteUrl = createValidAbsoluteUrl;
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;
var deprecated = sharedUtil.deprecated;
var createValidAbsoluteUrl = sharedUtil.createValidAbsoluteUrl;
/**
* 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;
}();
var hasCanvasTypedArrays;
hasCanvasTypedArrays = 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;
}
}
function isValidUrl(url, allowRelative) {
deprecated('isValidUrl(), please use createValidAbsoluteUrl() instead.');
var baseUrl = allowRelative ? 'http://example.com' : null;
return createValidAbsoluteUrl(url, baseUrl) !== null;
}
exports.CustomStyle = CustomStyle;
exports.addLinkAttributes = addLinkAttributes;
exports.isExternalLinkTargetSet = isExternalLinkTargetSet;
exports.isValidUrl = isValidUrl;
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;
}
};
var getLoadTestFont = function () {
// This is a CFF font with 1 glyph for '.' that fills its entire width and
// height.
return 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==');
};
Object.defineProperty(FontLoader.prototype, 'loadTestFont', {
get: function () {
return shadow(this, 'loadTestFont', getLoadTestFont());
},
configurable: true
});
FontLoader.prototype.addNativeFontFace = function fontLoader_addNativeFontFace(nativeFontFace) {
this.nativeFontFaces.push(nativeFontFace);
document.fonts.add(nativeFontFace);
};
FontLoader.prototype.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);
});
};
// Firefox Font Loading API does not work with mozPrintCallback --
// disabling it in this case.
var isFontLoadingAPISupported = FontLoader.isFontLoadingAPISupported && !FontLoader.isSyncFontLoadingSupported;
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 (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 (isFontLoadingAPISupported) {
Promise.all(fontLoadPromises).then(function () {
request.complete();
});
} else if (rules.length > 0 && !FontLoader.isSyncFontLoadingSupported) {
this.prepareFontLoadEvent(rules, fontsToLoad, request);
} else {
request.complete();
}
};
FontLoader.prototype.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;
};
FontLoader.prototype.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();
});
};
FontLoader.isFontLoadingAPISupported = typeof document !== 'undefined' && !!document.fonts;
var isSyncFontLoadingSupported = function isSyncFontLoadingSupported() {
if (typeof navigator === 'undefined') {
// node.js - we can pretend sync font loading is supported.
return 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 supported;
};
Object.defineProperty(FontLoader, 'isSyncFontLoadingSupported', {
get: function () {
return shadow(FontLoader, 'isSyncFontLoadingSupported', isSyncFontLoadingSupported());
},
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';
}
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.activeClipUrl = null;
this.clipGroup = null;
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 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 = null;
},
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 = null;
},
getSVG: function SVGGraphics_getSVG(operatorList, viewport) {
this.viewport = viewport;
var svgElement = this._initialize(viewport);
return this.loadDependencies(operatorList).then(function () {
this.transformMatrix = IDENTITY_MATRIX;
var opTree = this.convertOpList(operatorList);
this.executeOpTree(opTree);
return svgElement;
}.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 operator ' + 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._ensureTransformGroup().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() {
},
// 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._ensureTransformGroup().appendChild(current.path);
// 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() {
},
clip: function SVGGraphics_clip(type) {
var current = this.current;
// Add current path to clipping path
var clipId = 'clippath' + clipCount;
clipCount++;
var clipPath = document.createElementNS(NS, 'svg:clipPath');
clipPath.setAttributeNS(null, 'id', clipId);
clipPath.setAttributeNS(null, 'transform', pm(this.transformMatrix));
var clipElement = current.element.cloneNode();
if (type === 'evenodd') {
clipElement.setAttributeNS(null, 'clip-rule', 'evenodd');
} else {
clipElement.setAttributeNS(null, 'clip-rule', 'nonzero');
}
clipPath.appendChild(clipElement);
this.defs.appendChild(clipPath);
if (current.activeClipUrl) {
// The previous clipping group content can go out of order -- resetting
// cached clipGroup's.
current.clipGroup = null;
this.extraStack.forEach(function (prev) {
prev.clipGroup = null;
});
}
current.activeClipUrl = 'url(#' + clipId + ')';
this.tgrp = null;
},
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 'Font':
this.setFont(value);
break;
default:
warn('Unimplemented graphic state ' + key);
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._ensureTransformGroup().appendChild(rect);
},
paintJpegXObject: function SVGGraphics_paintJpegXObject(objId, w, h) {
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._ensureTransformGroup().appendChild(imgEl);
},
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 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));
this.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._ensureTransformGroup().appendChild(imgEl);
}
},
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._ensureTransformGroup().appendChild(rect);
this.paintInlineImageXObject(imgData, mask);
},
paintFormXObjectBegin: function SVGGraphics_paintFormXObjectBegin(matrix, bbox) {
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() {
},
/**
* @private
*/
_initialize: function SVGGraphics_initialize(viewport) {
// Create the SVG element.
var svg = document.createElementNS(NS, 'svg:svg');
svg.setAttributeNS(null, 'version', '1.1');
svg.setAttributeNS(null, 'width', viewport.width + 'px');
svg.setAttributeNS(null, 'height', viewport.height + 'px');
svg.setAttributeNS(null, 'viewBox', '0 0 ' + viewport.width + ' ' + viewport.height);
// Create the definitions element.
var definitions = document.createElementNS(NS, 'svg:defs');
svg.appendChild(definitions);
this.defs = definitions;
// Create the root group element, which acts a container for all other
// groups and applies the viewport transform.
var rootGroup = document.createElementNS(NS, 'svg:g');
rootGroup.setAttributeNS(null, 'transform', pm(viewport.transform));
svg.appendChild(rootGroup);
// For the construction of the SVG image we are only interested in the
// root group, so we expose it as the entry point of the SVG image for
// the other code in this class.
this.svg = rootGroup;
return svg;
},
/**
* @private
*/
_ensureClipGroup: function SVGGraphics_ensureClipGroup() {
if (!this.current.clipGroup) {
var clipGroup = document.createElementNS(NS, 'svg:g');
clipGroup.setAttributeNS(null, 'clip-path', this.current.activeClipUrl);
this.svg.appendChild(clipGroup);
this.current.clipGroup = clipGroup;
}
return this.current.clipGroup;
},
/**
* @private
*/
_ensureTransformGroup: function SVGGraphics_ensureTransformGroup() {
if (!this.tgrp) {
this.tgrp = document.createElementNS(NS, 'svg:g');
this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
if (this.current.activeClipUrl) {
this._ensureClipGroup().appendChild(this.tgrp);
} else {
this.svg.appendChild(this.tgrp);
}
}
return this.tgrp;
}
};
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);
case 'Ch':
return new ChoiceWidgetAnnotationElement(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, isRenderable) {
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) {
var isRenderable = parameters.renderInteractiveForms || !parameters.data.hasAppearance && !!parameters.data.fieldValue;
WidgetAnnotationElement.call(this, parameters, isRenderable);
}
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 ChoiceWidgetAnnotationElement
*/
var ChoiceWidgetAnnotationElement = function ChoiceWidgetAnnotationElementClosure() {
function ChoiceWidgetAnnotationElement(parameters) {
WidgetAnnotationElement.call(this, parameters, parameters.renderInteractiveForms);
}
Util.inherit(ChoiceWidgetAnnotationElement, WidgetAnnotationElement, {
/**
* Render the choice widget annotation's HTML element in the empty
* container.
*
* @public
* @memberof ChoiceWidgetAnnotationElement
* @returns {HTMLSectionElement}
*/
render: function ChoiceWidgetAnnotationElement_render() {
this.container.className = 'choiceWidgetAnnotation';
var selectElement = document.createElement('select');
selectElement.disabled = this.data.readOnly;
if (!this.data.combo) {
// List boxes have a size and (optionally) multiple selection.
selectElement.size = this.data.options.length;
if (this.data.multiSelect) {
selectElement.multiple = true;
}
}
// Insert the options into the choice field.
for (var i = 0, ii = this.data.options.length; i < ii; i++) {
var option = this.data.options[i];
var optionElement = document.createElement('option');
optionElement.textContent = option.displayValue;
optionElement.value = option.exportValue;
if (this.data.fieldValue.indexOf(option.displayValue) >= 0) {
optionElement.setAttribute('selected', true);
}
selectElement.appendChild(optionElement);
}
this.container.appendChild(selectElement);
return this.container;
}
});
return ChoiceWidgetAnnotationElement;
}();
/**
* @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) {
},
setFlatness: function CanvasGraphics_setFlatness(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) {
},
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
});
} else
// used during suspend operation
{
// 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) {
},
markPointProps: function CanvasGraphics_markPointProps(tag, properties) {
},
beginMarkedContent: function CanvasGraphics_beginMarkedContent(tag) {
},
beginMarkedContentProps: function CanvasGraphics_beginMarkedContentProps(tag, properties) {
},
endMarkedContent: function CanvasGraphics_endMarkedContent() {
},
// Compatibility
beginCompat: function CanvasGraphics_beginCompat() {
},
endCompat: function CanvasGraphics_endCompat() {
},
// 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 fakeWorkerFilesLoader = null;
var useRequireEnsure = false;
// For GENERIC build we need add support of different fake file loaders
// for different frameworks.
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;
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.
* @property {string} docBaseUrl - (optional) The base URL of the document,
* used when attempting to recover valid absolute URLs for annotations, and
* outline items, that (incorrectly) only specify relative URLs.
*/
/**
* @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,
docBaseUrl: source.docBaseUrl
}).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
* @property {boolean} normalizeWhitespace - replaces all occurrences of
* whitespace with standard spaces (0x20). The default value is `false`.
* @property {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
* @property {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) {
return fakeWorkerFilesLoadedCapability.promise;
}
fakeWorkerFilesLoadedCapability = createPromiseCapability();
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 = displayDOMUtils.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.pdfjsDisplayDOMUtils.isValidUrl;
exports.createValidAbsoluteUrl = pdfjsLibs.pdfjsSharedUtil.createValidAbsoluteUrl;
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;
}));