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jspdf.js
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/** @license
* jsPDF - PDF Document creation from JavaScript
* Version ${versionID} Built on ${builtOn}
* CommitID ${commitID}
*
* Copyright (c) 2010-2016 James Hall <james@parall.ax>, https://github.com/MrRio/jsPDF
* 2010 Aaron Spike, https://github.com/acspike
* 2012 Willow Systems Corporation, willow-systems.com
* 2012 Pablo Hess, https://github.com/pablohess
* 2012 Florian Jenett, https://github.com/fjenett
* 2013 Warren Weckesser, https://github.com/warrenweckesser
* 2013 Youssef Beddad, https://github.com/lifof
* 2013 Lee Driscoll, https://github.com/lsdriscoll
* 2013 Stefan Slonevskiy, https://github.com/stefslon
* 2013 Jeremy Morel, https://github.com/jmorel
* 2013 Christoph Hartmann, https://github.com/chris-rock
* 2014 Juan Pablo Gaviria, https://github.com/juanpgaviria
* 2014 James Makes, https://github.com/dollaruw
* 2014 Diego Casorran, https://github.com/diegocr
* 2014 Steven Spungin, https://github.com/Flamenco
* 2014 Kenneth Glassey, https://github.com/Gavvers
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Contributor(s):
* siefkenj, ahwolf, rickygu, Midnith, saintclair, eaparango,
* kim3er, mfo, alnorth, Flamenco
*/
/**
* Creates new jsPDF document object instance.
* @name jsPDF
* @class
* @param orientation {string/Object} Orientation of the first page. Possible values are "portrait" or "landscape" (or shortcuts "p" (Default), "l") <br />
* Can also be an options object.
* @param unit {string} Measurement unit to be used when coordinates are specified.<br />
* Possible values are "pt" (points), "mm" (Default), "cm", "in" or "px".
* @param format {string/Array} The format of the first page. Can be <ul><li>a0 - a10</li><li>b0 - b10</li><li>c0 - c10</li><li>c0 - c10</li><li>dl</li><li>letter</li><li>government-letter</li><li>legal</li><li>junior-legal</li><li>ledger</li><li>tabloid</li><li>credit-card</li></ul><br />
* Default is "a4". If you want to use your own format just pass instead of one of the above predefined formats the size as an number-array , e.g. [595.28, 841.89]
* @returns {jsPDF} jsPDF-instance
* @description
* If the first parameter (orientation) is an object, it will be interpreted as an object of named parameters
* ```
* {
* orientation: 'p',
* unit: 'mm',
* format: 'a4',
* hotfixes: [] // an array of hotfix strings to enable
* }
* ```
*/
var jsPDF = (function (global) {
'use strict';
var pdfVersion = '1.3',
pageFormats = { // Size in pt of various paper formats
'a0': [2383.94, 3370.39],
'a1': [1683.78, 2383.94],
'a2': [1190.55, 1683.78],
'a3': [841.89, 1190.55],
'a4': [595.28, 841.89],
'a5': [419.53, 595.28],
'a6': [297.64, 419.53],
'a7': [209.76, 297.64],
'a8': [147.40, 209.76],
'a9': [104.88, 147.40],
'a10': [73.70, 104.88],
'b0': [2834.65, 4008.19],
'b1': [2004.09, 2834.65],
'b2': [1417.32, 2004.09],
'b3': [1000.63, 1417.32],
'b4': [708.66, 1000.63],
'b5': [498.90, 708.66],
'b6': [354.33, 498.90],
'b7': [249.45, 354.33],
'b8': [175.75, 249.45],
'b9': [124.72, 175.75],
'b10': [87.87, 124.72],
'c0': [2599.37, 3676.54],
'c1': [1836.85, 2599.37],
'c2': [1298.27, 1836.85],
'c3': [918.43, 1298.27],
'c4': [649.13, 918.43],
'c5': [459.21, 649.13],
'c6': [323.15, 459.21],
'c7': [229.61, 323.15],
'c8': [161.57, 229.61],
'c9': [113.39, 161.57],
'c10': [79.37, 113.39],
'dl': [311.81, 623.62],
'letter': [612, 792],
'government-letter': [576, 756],
'legal': [612, 1008],
'junior-legal': [576, 360],
'ledger': [1224, 792],
'tabloid': [792, 1224],
'credit-card': [153, 243]
};
/**
* jsPDF's Internal PubSub Implementation.
* Backward compatible rewritten on 2014 by
* Diego Casorran, https://github.com/diegocr
*
* @class
* @name PubSub
* @ignore
*/
function PubSub(context) {
var topics = {};
this.subscribe = function (topic, callback, once) {
if (typeof callback !== 'function') {
return false;
}
if (!topics.hasOwnProperty(topic)) {
topics[topic] = {};
}
var id = Math.random().toString(35);
topics[topic][id] = [callback, !!once];
return id;
};
this.unsubscribe = function (token) {
for (var topic in topics) {
if (topics[topic][token]) {
delete topics[topic][token];
return true;
}
}
return false;
};
this.publish = function (topic) {
if (topics.hasOwnProperty(topic)) {
var args = Array.prototype.slice.call(arguments, 1),
idr = [];
for (var id in topics[topic]) {
var sub = topics[topic][id];
try {
sub[0].apply(context, args);
} catch (ex) {
if (global.console) {
console.error('jsPDF PubSub Error', ex.message, ex);
}
}
if (sub[1]) idr.push(id);
}
if (idr.length) idr.forEach(this.unsubscribe);
}
};
}
/**
* @constructor
* @private
*/
function jsPDF(orientation, unit, format, compressPdf) {
var options = {};
if (typeof orientation === 'object') {
options = orientation;
orientation = options.orientation;
unit = options.unit || unit;
format = options.format || format;
compressPdf = options.compress || options.compressPdf || compressPdf;
}
// Default options
unit = unit || 'mm';
format = format || 'a4';
orientation = ('' + (orientation || 'P')).toLowerCase();
var format_as_string = ('' + format).toLowerCase(),
compress = !!compressPdf && typeof Uint8Array === 'function',
textColor = options.textColor || '0 g',
drawColor = options.drawColor || '0 G',
activeFontSize = options.fontSize || 16,
activeCharSpace = options.charSpace || 0,
R2L = options.R2L || false,
lineHeightProportion = options.lineHeight || 1.15,
lineWidth = options.lineWidth || 0.200025, // 2mm
fileId = '00000000000000000000000000000000',
objectNumber = 2, // 'n' Current object number
outToPages = !1, // switches where out() prints. outToPages true = push to pages obj. outToPages false = doc builder content
offsets = [], // List of offsets. Activated and reset by buildDocument(). Pupulated by various calls buildDocument makes.
fonts = {}, // collection of font objects, where key is fontKey - a dynamically created label for a given font.
fontmap = {}, // mapping structure fontName > fontStyle > font key - performance layer. See addFont()
activeFontKey, // will be string representing the KEY of the font as combination of fontName + fontStyle
k, // Scale factor
tmp,
page = 0,
currentPage,
pages = [],
pagesContext = [], // same index as pages and pagedim
pagedim = [],
content = [],
additionalObjects = [],
lineCapID = 0,
lineJoinID = 0,
content_length = 0,
pageWidth,
pageHeight,
pageMode,
zoomMode,
layoutMode,
creationDate,
documentProperties = {
'title': '',
'subject': '',
'author': '',
'keywords': '',
'creator': ''
},
API = {},
events = new PubSub(API),
hotfixes = options.hotfixes || [],
/////////////////////
// Private functions
/////////////////////
generateColorString = function (options) {
var color;
var ch1 = options.ch1;
var ch2 = options.ch2;
var ch3 = options.ch3;
var ch4 = options.ch4;
var precision = options.precision;
var letterArray = (options.pdfColorType === "draw") ? ['G', 'RG', 'K'] : ['g', 'rg', 'k'];
if ((typeof ch1 === "string") && ch1.charAt(0) !== '#') {
var rgbColor = new RGBColor(ch1);
if (rgbColor.ok) {
ch1 = rgbColor.toHex();
}
}
//convert short rgb to long form
if ((typeof ch1 === "string") && (/^#[0-9A-Fa-f]{3}$/).test(ch1)) {
ch1 = '#' + ch1[1] + ch1[1] + ch1[2] + ch1[2] + ch1[3] + ch1[3];
}
if ((typeof ch1 === "string") && (/^#[0-9A-Fa-f]{6}$/).test(ch1)) {
var hex = parseInt(ch1.substr(1), 16);
ch1 = (hex >> 16) & 255;
ch2 = (hex >> 8) & 255;
ch3 = (hex & 255);
}
if ((typeof ch2 === "undefined") || (typeof ch4 === "undefined") && ((ch1 === ch2) && (ch2 === ch3))) {
// Gray color space.
if (typeof ch1 === "string") {
color = ch1 + " " + letterArray[0];
} else {
switch (options.precision) {
case 2:
color = f2(ch1 / 255) + " " + letterArray[0];
break;
case 3:
default:
color = f3(ch1 / 255) + " " + letterArray[0];
}
}
} else if (typeof ch4 === "undefined" || typeof ch4 === "object") {
// assume RGB
if (typeof ch1 === "string") {
color = [ch1, ch2, ch3, letterArray[1]].join(" ");
} else {
switch (options.precision) {
case 2:
color = [f2(ch1 / 255), f2(ch2 / 255), f2(ch3 / 255), letterArray[1]].join(" ");
break;
default:
case 3:
color = [f3(ch1 / 255), f3(ch2 / 255), f3(ch3 / 255), letterArray[1]].join(" ");
}
}
// assume RGBA
if (ch4 && ch4.a === 0) {
//TODO Implement transparency.
//WORKAROUND use white for now
color = ['255', '255', '255', letterArray[1]].join(" ");
}
} else {
// assume CMYK
if (typeof ch1 === 'string') {
color = [ch1, ch2, ch3, ch4, letterArray[2]].join(" ");
} else {
switch (options.precision) {
case 2:
color = [f2(ch1), f2(ch2), f2(ch3), f2(ch4), letterArray[2]].join(" ");
break;
case 3:
default:
color = [f3(ch1), f3(ch2), f3(ch3), f3(ch4), letterArray[2]].join(" ");
}
}
}
return color;
},
convertDateToPDFDate = function (parmDate) {
var padd2 = function(number) {
return ('0' + parseInt(number)).slice(-2);
};
var result = '';
var tzoffset = parmDate.getTimezoneOffset(),
tzsign = tzoffset < 0 ? '+' : '-',
tzhour = Math.floor(Math.abs(tzoffset / 60)),
tzmin = Math.abs(tzoffset % 60),
timeZoneString = [tzsign, padd2(tzhour), "'", padd2(tzmin), "'"].join('');
result = ['D:',
parmDate.getFullYear(),
padd2(parmDate.getMonth() + 1),
padd2(parmDate.getDate()),
padd2(parmDate.getHours()),
padd2(parmDate.getMinutes()),
padd2(parmDate.getSeconds()),
timeZoneString
].join('');
return result;
},
convertPDFDateToDate = function (parmPDFDate) {
var year = parseInt(parmPDFDate.substr(2,4), 10);
var month = parseInt(parmPDFDate.substr(6,2), 10) - 1;
var date = parseInt(parmPDFDate.substr(8,2), 10);
var hour = parseInt(parmPDFDate.substr(10,2), 10);
var minutes = parseInt(parmPDFDate.substr(12,2), 10);
var seconds = parseInt(parmPDFDate.substr(14,2), 10);
var timeZoneHour = parseInt(parmPDFDate.substr(16,2), 10);
var timeZoneMinutes = parseInt(parmPDFDate.substr(20,2), 10);
var resultingDate = new Date(year, month, date, hour, minutes, seconds, 0);
return resultingDate;
},
setCreationDate = function (date) {
var tmpCreationDateString;
var regexPDFCreationDate = (/^D:(20[0-2][0-9]|203[0-7]|19[7-9][0-9])(0[0-9]|1[0-2])([0-2][0-9]|3[0-1])(0[0-9]|1[0-9]|2[0-3])(0[0-9]|[1-5][0-9])(0[0-9]|[1-5][0-9])(\+0[0-9]|\+1[0-4]|\-0[0-9]|\-1[0-1])\'(0[0-9]|[1-5][0-9])\'?$/);
if (typeof (date) === undefined) {
date = new Date();
}
if (typeof date === "object" && Object.prototype.toString.call(date) === "[object Date]") {
tmpCreationDateString = convertDateToPDFDate(date)
} else if (regexPDFCreationDate.test(date)) {
tmpCreationDateString = date;
} else {
tmpCreationDateString = convertDateToPDFDate(new Date());
}
creationDate = tmpCreationDateString;
return creationDate;
},
getCreationDate = function(type) {
var result = creationDate;
if (type === "jsDate") {
result = convertPDFDateToDate(creationDate);
}
return result;
},
setFileId = function (value) {
value = value || ("12345678901234567890123456789012").split('').map(function () {return "ABCDEF0123456789".charAt(Math.floor(Math.random() * 16)); }).join('');
fileId = value;
return fileId;
},
getFileId = function() {
return fileId;
},
f2 = function(number) {
return number.toFixed(2); // Ie, %.2f
},
f3 = function (number) {
return number.toFixed(3); // Ie, %.3f
},
padd2 = function (number) {
return ('0' + parseInt(number)).slice(-2);
},
out = function(string) {
string = (typeof string === "string") ? string : string.toString();
if (outToPages) {
/* set by beginPage */
pages[currentPage].push(string);
} else {
// +1 for '\n' that will be used to join 'content'
content_length += string.length + 1;
content.push(string);
}
},
newObject = function () {
// Begin a new object
objectNumber++;
offsets[objectNumber] = content_length;
out(objectNumber + ' 0 obj');
return objectNumber;
},
// Does not output the object until after the pages have been output.
// Returns an object containing the objectId and content.
// All pages have been added so the object ID can be estimated to start right after.
// This does not modify the current objectNumber; It must be updated after the newObjects are output.
newAdditionalObject = function () {
var objId = pages.length * 2 + 1;
objId += additionalObjects.length;
var obj = {
objId: objId,
content: ''
};
additionalObjects.push(obj);
return obj;
},
// Does not output the object. The caller must call newObjectDeferredBegin(oid) before outputing any data
newObjectDeferred = function () {
objectNumber++;
offsets[objectNumber] = function () {
return content_length;
};
return objectNumber;
},
newObjectDeferredBegin = function (oid) {
offsets[oid] = content_length;
},
putStream = function (str) {
out('stream');
out(str);
out('endstream');
},
putPages = function () {
var n, p, arr, i, deflater, adler32, adler32cs, wPt, hPt,
pageObjectNumbers = [];
adler32cs = global.adler32cs || jsPDF.API.adler32cs;
if (compress && typeof adler32cs === 'undefined') {
compress = false;
}
// outToPages = false as set in endDocument(). out() writes to content.
for (n = 1; n <= page; n++) {
pageObjectNumbers.push(newObject());
wPt = (pageWidth = pagedim[n].width) * k;
hPt = (pageHeight = pagedim[n].height) * k;
out('<</Type /Page');
out('/Parent 1 0 R');
out('/Resources 2 0 R');
out('/MediaBox [0 0 ' + f2(wPt) + ' ' + f2(hPt) + ']');
// Added for annotation plugin
events.publish('putPage', {
pageNumber: n,
page: pages[n]
});
out('/Contents ' + (objectNumber + 1) + ' 0 R');
out('>>');
out('endobj');
// Page content
p = pages[n].join('\n');
newObject();
if (compress) {
arr = [];
i = p.length;
while (i--) {
arr[i] = p.charCodeAt(i);
}
adler32 = adler32cs.from(p);
deflater = new Deflater(6);
deflater.append(new Uint8Array(arr));
p = deflater.flush();
arr = new Uint8Array(p.length + 6);
arr.set(new Uint8Array([120, 156])),
arr.set(p, 2);
arr.set(new Uint8Array([adler32 & 0xFF, (adler32 >> 8) & 0xFF, (
adler32 >> 16) & 0xFF, (adler32 >> 24) & 0xFF]), p.length +
2);
p = String.fromCharCode.apply(null, arr);
out('<</Length ' + p.length + ' /Filter [/FlateDecode]>>');
} else {
out('<</Length ' + p.length + '>>');
}
putStream(p);
out('endobj');
}
offsets[1] = content_length;
out('1 0 obj');
out('<</Type /Pages');
var kids = '/Kids [';
for (i = 0; i < page; i++) {
kids += pageObjectNumbers[i] + ' 0 R ';
}
out(kids + ']');
out('/Count ' + page);
out('>>');
out('endobj');
events.publish('postPutPages');
},
putFont = function(font) {
events.publish('putFont', {
font: font,
out: out,
newObject: newObject
});
if (font.isAlreadyPutted !== true) {
font.objectNumber = newObject();
out('<<');
out('/Type /Font');
out('/BaseFont /' + font.postScriptName)
out('/Subtype /Type1');
if (typeof font.encoding === 'string') {
out('/Encoding /' + font.encoding);
}
out('/FirstChar 32');
out('/LastChar 255');
out('>>');
out('endobj');
}
},
putFonts = function () {
for (var fontKey in fonts) {
if (fonts.hasOwnProperty(fontKey)) {
putFont(fonts[fontKey]);
}
}
},
putXobjectDict = function () {
// Loop through images, or other data objects
events.publish('putXobjectDict');
},
putResourceDictionary = function () {
out('/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]');
out('/Font <<');
// Do this for each font, the '1' bit is the index of the font
for (var fontKey in fonts) {
if (fonts.hasOwnProperty(fontKey)) {
out('/' + fontKey + ' ' + fonts[fontKey].objectNumber + ' 0 R');
}
}
out('>>');
out('/XObject <<');
putXobjectDict();
out('>>');
},
putResources = function () {
putFonts();
events.publish('putResources');
// Resource dictionary
offsets[2] = content_length;
out('2 0 obj');
out('<<');
putResourceDictionary();
out('>>');
out('endobj');
events.publish('postPutResources');
},
putAdditionalObjects = function () {
events.publish('putAdditionalObjects');
for (var i = 0; i < additionalObjects.length; i++) {
var obj = additionalObjects[i];
offsets[obj.objId] = content_length;
out(obj.objId + ' 0 obj');
out(obj.content);;
out('endobj');
}
objectNumber += additionalObjects.length;
events.publish('postPutAdditionalObjects');
},
addToFontDictionary = function (fontKey, fontName, fontStyle) {
// this is mapping structure for quick font key lookup.
// returns the KEY of the font (ex: "F1") for a given
// pair of font name and type (ex: "Arial". "Italic")
if (!fontmap.hasOwnProperty(fontName)) {
fontmap[fontName] = {};
}
fontmap[fontName][fontStyle] = fontKey;
},
addFont = function(postScriptName, fontName, fontStyle, encoding) {
var fontKey = 'F' + (Object.keys(fonts).length + 1).toString(10),
// This is FontObject
font = fonts[fontKey] = {
'id': fontKey,
'postScriptName': postScriptName,
'fontName': fontName,
'fontStyle': fontStyle,
'encoding': encoding,
'metadata': {}
};
addToFontDictionary(fontKey, fontName, fontStyle);
events.publish('addFont', font);
return fontKey;
},
addFonts = function () {
var HELVETICA = "helvetica",
TIMES = "times",
COURIER = "courier",
NORMAL = "normal",
BOLD = "bold",
ITALIC = "italic",
BOLD_ITALIC = "bolditalic",
encoding = 'StandardEncoding',
ZAPF = "zapfdingbats",
SYMBOL = "symbol",
standardFonts = [
['Helvetica', HELVETICA, NORMAL, 'WinAnsiEncoding'],
['Helvetica-Bold', HELVETICA, BOLD, 'WinAnsiEncoding'],
['Helvetica-Oblique', HELVETICA, ITALIC, 'WinAnsiEncoding'],
['Helvetica-BoldOblique', HELVETICA, BOLD_ITALIC, 'WinAnsiEncoding'],
['Courier', COURIER, NORMAL, 'WinAnsiEncoding'],
['Courier-Bold', COURIER, BOLD, 'WinAnsiEncoding'],
['Courier-Oblique', COURIER, ITALIC, 'WinAnsiEncoding'],
['Courier-BoldOblique', COURIER, BOLD_ITALIC, 'WinAnsiEncoding'],
['Times-Roman', TIMES, NORMAL, 'WinAnsiEncoding'],
['Times-Bold', TIMES, BOLD, 'WinAnsiEncoding'],
['Times-Italic', TIMES, ITALIC, 'WinAnsiEncoding'],
['Times-BoldItalic', TIMES, BOLD_ITALIC, 'WinAnsiEncoding'],
['ZapfDingbats', ZAPF, NORMAL, null],
['Symbol', SYMBOL, NORMAL, null]
];
for (var i = 0, l = standardFonts.length; i < l; i++) {
var fontKey = addFont(
standardFonts[i][0],
standardFonts[i][1],
standardFonts[i][2],
standardFonts[i][3]);
// adding aliases for standard fonts, this time matching the capitalization
var parts = standardFonts[i][0].split('-');
addToFontDictionary(fontKey, parts[0], parts[1] || '');
}
events.publish('addFonts', {
fonts: fonts,
dictionary: fontmap
});
},
SAFE = function __safeCall(fn) {
fn.foo = function __safeCallWrapper() {
try {
return fn.apply(this, arguments);
} catch (e) {
var stack = e.stack || '';
if (~stack.indexOf(' at ')) stack = stack.split(" at ")[1];
var m = "Error in function " + stack.split("\n")[0].split('<')[
0] + ": " + e.message;
if (global.console) {
global.console.error(m, e);
if (global.alert) alert(m);
} else {
throw new Error(m);
}
}
};
fn.foo.bar = fn;
return fn.foo;
},
to8bitStream = function (text, flags) {
/**
* PDF 1.3 spec:
* "For text strings encoded in Unicode, the first two bytes must be 254 followed by
* 255, representing the Unicode byte order marker, U+FEFF. (This sequence conflicts
* with the PDFDocEncoding character sequence thorn ydieresis, which is unlikely
* to be a meaningful beginning of a word or phrase.) The remainder of the
* string consists of Unicode character codes, according to the UTF-16 encoding
* specified in the Unicode standard, version 2.0. Commonly used Unicode values
* are represented as 2 bytes per character, with the high-order byte appearing first
* in the string."
*
* In other words, if there are chars in a string with char code above 255, we
* recode the string to UCS2 BE - string doubles in length and BOM is prepended.
*
* HOWEVER!
* Actual *content* (body) text (as opposed to strings used in document properties etc)
* does NOT expect BOM. There, it is treated as a literal GID (Glyph ID)
*
* Because of Adobe's focus on "you subset your fonts!" you are not supposed to have
* a font that maps directly Unicode (UCS2 / UTF16BE) code to font GID, but you could
* fudge it with "Identity-H" encoding and custom CIDtoGID map that mimics Unicode
* code page. There, however, all characters in the stream are treated as GIDs,
* including BOM, which is the reason we need to skip BOM in content text (i.e. that
* that is tied to a font).
*
* To signal this "special" PDFEscape / to8bitStream handling mode,
* API.text() function sets (unless you overwrite it with manual values
* given to API.text(.., flags) )
* flags.autoencode = true
* flags.noBOM = true
*
* ===================================================================================
* `flags` properties relied upon:
* .sourceEncoding = string with encoding label.
* "Unicode" by default. = encoding of the incoming text.
* pass some non-existing encoding name
* (ex: 'Do not touch my strings! I know what I am doing.')
* to make encoding code skip the encoding step.
* .outputEncoding = Either valid PDF encoding name
* (must be supported by jsPDF font metrics, otherwise no encoding)
* or a JS object, where key = sourceCharCode, value = outputCharCode
* missing keys will be treated as: sourceCharCode === outputCharCode
* .noBOM
* See comment higher above for explanation for why this is important
* .autoencode
* See comment higher above for explanation for why this is important
*/
var i, l, sourceEncoding, encodingBlock, outputEncoding, newtext,
isUnicode, ch, bch;
flags = flags || {};
sourceEncoding = flags.sourceEncoding || 'Unicode';
outputEncoding = flags.outputEncoding;
// This 'encoding' section relies on font metrics format
// attached to font objects by, among others,
// "Willow Systems' standard_font_metrics plugin"
// see jspdf.plugin.standard_font_metrics.js for format
// of the font.metadata.encoding Object.
// It should be something like
// .encoding = {'codePages':['WinANSI....'], 'WinANSI...':{code:code, ...}}
// .widths = {0:width, code:width, ..., 'fof':divisor}
// .kerning = {code:{previous_char_code:shift, ..., 'fof':-divisor},...}
if ((flags.autoencode || outputEncoding) &&
fonts[activeFontKey].metadata &&
fonts[activeFontKey].metadata[sourceEncoding] &&
fonts[activeFontKey].metadata[sourceEncoding].encoding) {
encodingBlock = fonts[activeFontKey].metadata[sourceEncoding].encoding;
// each font has default encoding. Some have it clearly defined.
if (!outputEncoding && fonts[activeFontKey].encoding) {
outputEncoding = fonts[activeFontKey].encoding;
}
// Hmmm, the above did not work? Let's try again, in different place.
if (!outputEncoding && encodingBlock.codePages) {
outputEncoding = encodingBlock.codePages[0]; // let's say, first one is the default
}
if (typeof outputEncoding === 'string') {
outputEncoding = encodingBlock[outputEncoding];
}
// we want output encoding to be a JS Object, where
// key = sourceEncoding's character code and
// value = outputEncoding's character code.
if (outputEncoding) {
isUnicode = false;
newtext = [];
for (i = 0, l = text.length; i < l; i++) {
ch = outputEncoding[text.charCodeAt(i)];
if (ch) {
newtext.push(
String.fromCharCode(ch));
} else {
newtext.push(
text[i]);
}
// since we are looping over chars anyway, might as well
// check for residual unicodeness
if (newtext[i].charCodeAt(0) >> 8) {
/* more than 255 */
isUnicode = true;
}
}
text = newtext.join('');
}
}
i = text.length;
// isUnicode may be set to false above. Hence the triple-equal to undefined
while (isUnicode === undefined && i !== 0) {
if (text.charCodeAt(i - 1) >> 8) {
/* more than 255 */
isUnicode = true;
}
i--;
}
if (!isUnicode) {
return text;
}
newtext = flags.noBOM ? [] : [254, 255];
for (i = 0, l = text.length; i < l; i++) {
ch = text.charCodeAt(i);
bch = ch >> 8; // divide by 256
if (bch >> 8) {
/* something left after dividing by 256 second time */
throw new Error("Character at position " + i + " of string '" +
text + "' exceeds 16bits. Cannot be encoded into UCS-2 BE");
}
newtext.push(bch);
newtext.push(ch - (bch << 8));
}
return String.fromCharCode.apply(undefined, newtext);
},
pdfEscape = function (text, flags) {
/**
* Replace '/', '(', and ')' with pdf-safe versions
*
* Doing to8bitStream does NOT make this PDF display unicode text. For that
* we also need to reference a unicode font and embed it - royal pain in the rear.
*
* There is still a benefit to to8bitStream - PDF simply cannot handle 16bit chars,
* which JavaScript Strings are happy to provide. So, while we still cannot display
* 2-byte characters property, at least CONDITIONALLY converting (entire string containing)
* 16bit chars to (USC-2-BE) 2-bytes per char + BOM streams we ensure that entire PDF
* is still parseable.
* This will allow immediate support for unicode in document properties strings.
*/
return to8bitStream(text, flags).replace(/\\/g, '\\\\').replace(
/\(/g, '\\(').replace(/\)/g, '\\)');
},
putInfo = function () {
out('/Producer (jsPDF ' + jsPDF.version + ')');
for (var key in documentProperties) {
if (documentProperties.hasOwnProperty(key) && documentProperties[
key]) {
out('/' + key.substr(0, 1).toUpperCase() + key.substr(1) + ' (' +
pdfEscape(documentProperties[key]) + ')');
}
}
out('/CreationDate (' + creationDate + ')');
},
putCatalog = function () {
out('/Type /Catalog');
out('/Pages 1 0 R');
// PDF13ref Section 7.2.1
if (!zoomMode) zoomMode = 'fullwidth';
switch (zoomMode) {
case 'fullwidth':
out('/OpenAction [3 0 R /FitH null]');
break;
case 'fullheight':
out('/OpenAction [3 0 R /FitV null]');
break;
case 'fullpage':
out('/OpenAction [3 0 R /Fit]');
break;
case 'original':
out('/OpenAction [3 0 R /XYZ null null 1]');
break;
default:
var pcn = '' + zoomMode;
if (pcn.substr(pcn.length - 1) === '%')
zoomMode = parseInt(zoomMode) / 100;
if (typeof zoomMode === 'number') {
out('/OpenAction [3 0 R /XYZ null null ' + f2(zoomMode) + ']');
}
}
if (!layoutMode) layoutMode = 'continuous';
switch (layoutMode) {
case 'continuous':
out('/PageLayout /OneColumn');
break;
case 'single':
out('/PageLayout /SinglePage');
break;
case 'two':
case 'twoleft':
out('/PageLayout /TwoColumnLeft');
break;
case 'tworight':
out('/PageLayout /TwoColumnRight');
break;
}
if (pageMode) {
/**
* A name object specifying how the document should be displayed when opened:
* UseNone : Neither document outline nor thumbnail images visible -- DEFAULT
* UseOutlines : Document outline visible
* UseThumbs : Thumbnail images visible
* FullScreen : Full-screen mode, with no menu bar, window controls, or any other window visible
*/
out('/PageMode /' + pageMode);
}
events.publish('putCatalog');
},
putTrailer = function () {
out('/Size ' + (objectNumber + 1));
out('/Root ' + objectNumber + ' 0 R');
out('/Info ' + (objectNumber - 1) + ' 0 R');
out("/ID [ <" + fileId + "> <" + fileId + "> ]");
},
beginPage = function (width, height) {
// Dimensions are stored as user units and converted to points on output
var orientation = typeof height === 'string' && height.toLowerCase();
if (typeof width === 'string') {
var format = width.toLowerCase();
if (pageFormats.hasOwnProperty(format)) {
width = pageFormats[format][0] / k;
height = pageFormats[format][1] / k;
}
}
if (Array.isArray(width)) {
height = width[1];
width = width[0];
}
if (orientation) {
switch (orientation.substr(0, 1)) {
case 'l':
if (height > width) orientation = 's';
break;
case 'p':
if (width > height) orientation = 's';
break;
}
if (orientation === 's') {
tmp = width;
width = height;
height = tmp;
}
}
outToPages = true;
pages[++page] = [];
pagedim[page] = {
width: Number(width) || pageWidth,
height: Number(height) || pageHeight
};
pagesContext[page] = {};
_setPage(page);
},
_addPage = function () {
beginPage.apply(this, arguments);
// Set line width
out(f2(lineWidth * k) + ' w');
// Set draw color
out(drawColor);
// resurrecting non-default line caps, joins
if (lineCapID !== 0) {
out(lineCapID + ' J');
}
if (lineJoinID !== 0) {
out(lineJoinID + ' j');
}
events.publish('addPage', {
pageNumber: page
});
},
_deletePage = function (n) {
if (n > 0 && n <= page) {
pages.splice(n, 1);
pagedim.splice(n, 1);
page--;
if (currentPage > page) {
currentPage = page;
}
this.setPage(currentPage);
}
},
_setPage = function (n) {
if (n > 0 && n <= page) {
currentPage = n;
pageWidth = pagedim[n].width;
pageHeight = pagedim[n].height;
}
},
/**
* Returns a document-specific font key - a label assigned to a
* font name + font type combination at the time the font was added
* to the font inventory.
*
* Font key is used as label for the desired font for a block of text
* to be added to the PDF document stream.
* @private
* @function
* @param fontName {string} can be undefined on "falthy" to indicate "use current"
* @param fontStyle {string} can be undefined on "falthy" to indicate "use current"
* @returns {string} Font key.
* @ignore
*/
getFont = function(fontName, fontStyle, options) {
var key = undefined, originalFontName, fontNameLowerCase;
options = options || {};
fontName = fontName !== undefined ? fontName : fonts[activeFontKey].fontName;
fontStyle = fontStyle !== undefined ? fontStyle : fonts[activeFontKey].fontStyle;
fontNameLowerCase = fontName.toLowerCase();
if (fontmap[fontNameLowerCase] !== undefined && fontmap[fontNameLowerCase][fontStyle] !== undefined) {
key = fontmap[fontNameLowerCase][fontStyle];