/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
"use strict";
var isWorker = (typeof window == "undefined");
/**
* Maximum file size of the font.
*/
var kMaxFontFileSize = 40000;
/**
* Maximum time to wait for a font to be loaded by @font-face
*/
var kMaxWaitForFontFace = 1000;
/**
* Useful for debugging when you want to certains operations depending on how
* many fonts are loaded.
*/
var fontCount = 0;
var fontName = "";
/**
* If for some reason one want to debug without fonts activated, it just need
* to turn this pref to true/false.
*/
var kDisableFonts = false;
/**
* Hold a map of decoded fonts and of the standard fourteen Type1 fonts and
* their acronyms.
* TODO Add the standard fourteen Type1 fonts list by default
* http://cgit.freedesktop.org/poppler/poppler/tree/poppler/GfxFont.cc#n65
*/
var Fonts = (function Fonts() {
var kScalePrecision = 40;
var fonts = Object.create(null);
if (!isWorker) {
var ctx = document.createElement("canvas").getContext("2d");
ctx.scale(1 / kScalePrecision, 1);
}
function Font(name, data, properties) {
this.name = name;
this.data = data;
this.properties = properties;
this.loading = true;
this.charsCache = Object.create(null);
this.sizes = [];
}
var current;
var charsCache;
var measureCache;
return {
registerFont: function fonts_registerFont(fontName, data, properties) {
fonts[fontName] = new Font(fontName, data, properties);
},
blacklistFont: function fonts_blacklistFont(fontName) {
registerFont(fontName, null, {});
markLoaded(fontName);
},
lookup: function fonts_lookup(fontName) {
return fonts[fontName];
},
setActive: function fonts_setActive(fontName, size) {
// |current| can be null is fontName is a built-in font
// (e.g. "sans-serif")
if ((current = fonts[fontName])) {
charsCache = current.charsCache;
var sizes = current.sizes;
if (!(measureCache = sizes[size]))
measureCache = sizes[size] = Object.create(null);
}
ctx.font = (size * kScalePrecision) + 'px "' + fontName + '"';
},
charsToUnicode: function fonts_chars2Unicode(chars) {
if (!charsCache)
return chars;
// if we translated this string before, just grab it from the cache
var str = charsCache[chars];
if (str)
return str;
// translate the string using the font's encoding
var encoding = current ? current.properties.encoding : null;
if (!encoding)
return chars;
str = "";
for (var i = 0; i < chars.length; ++i) {
var charcode = chars.charCodeAt(i);
var unicode = encoding[charcode];
// Check if the glyph has already been converted
if (!IsNum(unicode))
unicode = encoding[unicode] = GlyphsUnicode[unicode.name];
// Handle surrogate pairs
if (unicode > 0xFFFF) {
str += String.fromCharCode(unicode & 0xFFFF);
unicode >>= 16;
}
str += String.fromCharCode(unicode);
}
// Enter the translated string into the cache
return charsCache[chars] = str;
},
measureText: function fonts_measureText(text) {
var width;
if (measureCache && (width = measureCache[text]))
return width;
width = ctx.measureText(text).width / kScalePrecision;
if (measureCache)
measureCache[text] = width;
return width;
}
}
})();
var FontLoader = {
listeningForFontLoad: false,
bind: function(fonts, callback) {
function checkFontsLoaded() {
for (var i = 0; i < fonts.length; i++) {
var font = fonts[i];
if (Fonts.lookup(font.name).loading) {
return false;
}
}
document.documentElement.removeEventListener(
"pdfjsFontLoad", checkFontsLoaded, false);
callback();
return true;
}
var rules = [ ], names = [ ];
for (var i = 0; i < fonts.length; i++) {
var font = fonts[i];
if (!Fonts.lookup(font.name)) {
var obj = new Font(font.name, font.file, font.properties);
var str = "";
var data = Fonts.lookup(font.name).data;
var length = data.length;
for (var j = 0; j < length; j++)
str += String.fromCharCode(data[j]);
var rule = isWorker ? obj.bindWorker(str) : obj.bindDOM(str);
if (rule) {
rules.push(rule);
names.push(font.name);
}
}
}
if (!isWorker && rules.length) {
FontLoader.prepareFontLoadEvent(rules, names);
}
if (!checkFontsLoaded()) {
document.documentElement.addEventListener(
"pdfjsFontLoad", checkFontsLoaded, false);
}
return;
},
// Set things up so that at least one pdfjsFontLoad event is
// dispatched when all the @font-face |rules| for |names| have been
// loaded in a subdocument. It's expected that the load of |rules|
// has already started in this (outer) document, so that they should
// be ordered before the load in the subdocument.
prepareFontLoadEvent: function(rules, names) {
/** Hack begin */
// There's no event when a font has finished downloading so the
// following code is a dirty hack to 'guess' when a font is
// ready. This code will be obsoleted by Mozilla bug 471915.
//
// The only reliable way to know if a font is loaded in Gecko
// (at the moment) is document.onload in a document with
// a @font-face rule defined in a "static" stylesheet. We use a
// subdocument in an <iframe>, set up properly, to know when
// our @font-face rule was loaded. However, the subdocument and
// outer document can't share CSS rules, so the inner document
// is only part of the puzzle. The second piece is an invisible
// div created in order to force loading of the @font-face in
// the *outer* document. (The font still needs to be loaded for
// its metrics, for reflow). We create the div first for the
// outer document, then create the iframe. Unless something
// goes really wonkily, we expect the @font-face for the outer
// document to be processed before the inner. That's still
// fragile, but seems to work in practice.
//
// The postMessage() hackery was added to work around chrome bug
// 82402.
var div = document.createElement("div");
div.setAttribute("style",
'visibility: hidden;'+
'width: 10px; height: 10px;'+
'position: absolute; top: 0px; left: 0px;');
var html = '';
for (var i = 0; i < names.length; ++i) {
html += '<span style="font-family:'+ names[i] +'">Hi</span>';
}
div.innerHTML = html;
document.body.appendChild(div);
if (!this.listeneningForFontLoad) {
window.addEventListener(
"message",
function(e) {
var fontNames = JSON.parse(e.data);
for (var i = 0; i < fontNames.length; ++i) {
var font = Fonts.lookup(fontNames[i]);
font.loading = false;
}
var evt = document.createEvent("Events");
evt.initEvent("pdfjsFontLoad", true, false);
document.documentElement.dispatchEvent(evt);
},
false);
this.listeneningForFontLoad = true;
}
// XXX we should have a time-out here too, and maybe fire
// pdfjsFontLoadFailed?
var src = '<!DOCTYPE HTML><html><head>';
src += '<style type="text/css">';
for (var i = 0; i < rules.length; ++i) {
src += rules[i];
}
src += '</style>'
src += '<script type="application/javascript">'
var fontNamesArray = '';
for (var i = 0; i < names.length; ++i) {
fontNamesArray += '"'+ names[i] + '", ';
}
src += ' var fontNames=['+ fontNamesArray +'];\n';
src += ' window.onload = function () {\n'
src += ' top.postMessage(JSON.stringify(fontNames), "*");\n';
src += ' }';
src += '</script></head><body>';
for (var i = 0; i < names.length; ++i) {
src += '<p style="font-family:\''+ fontName +'\'">Hi</p>';
}
src += '</body></html>';
var frame = document.createElement("iframe");
frame.src = 'data:text/html,'+ src;
frame.setAttribute("style",
'visibility: hidden;'+
'width: 10px; height: 10px;'+
'position: absolute; top: 0px; left: 0px;');
document.body.appendChild(frame);
/** Hack end */
}
};
var UnicodeRanges = [
{ "begin": 0x0000, "end": 0x007F }, // Basic Latin
{ "begin": 0x0080, "end": 0x00FF }, // Latin-1 Supplement
{ "begin": 0x0100, "end": 0x017F }, // Latin Extended-A
{ "begin": 0x0180, "end": 0x024F }, // Latin Extended-B
{ "begin": 0x0250, "end": 0x02AF }, // IPA Extensions
{ "begin": 0x02B0, "end": 0x02FF }, // Spacing Modifier Letters
{ "begin": 0x0300, "end": 0x036F }, // Combining Diacritical Marks
{ "begin": 0x0370, "end": 0x03FF }, // Greek and Coptic
{ "begin": 0x2C80, "end": 0x2CFF }, // Coptic
{ "begin": 0x0400, "end": 0x04FF }, // Cyrillic
{ "begin": 0x0530, "end": 0x058F }, // Armenian
{ "begin": 0x0590, "end": 0x05FF }, // Hebrew
{ "begin": 0xA500, "end": 0xA63F }, // Vai
{ "begin": 0x0600, "end": 0x06FF }, // Arabic
{ "begin": 0x07C0, "end": 0x07FF }, // NKo
{ "begin": 0x0900, "end": 0x097F }, // Devanagari
{ "begin": 0x0980, "end": 0x09FF }, // Bengali
{ "begin": 0x0A00, "end": 0x0A7F }, // Gurmukhi
{ "begin": 0x0A80, "end": 0x0AFF }, // Gujarati
{ "begin": 0x0B00, "end": 0x0B7F }, // Oriya
{ "begin": 0x0B80, "end": 0x0BFF }, // Tamil
{ "begin": 0x0C00, "end": 0x0C7F }, // Telugu
{ "begin": 0x0C80, "end": 0x0CFF }, // Kannada
{ "begin": 0x0D00, "end": 0x0D7F }, // Malayalam
{ "begin": 0x0E00, "end": 0x0E7F }, // Thai
{ "begin": 0x0E80, "end": 0x0EFF }, // Lao
{ "begin": 0x10A0, "end": 0x10FF }, // Georgian
{ "begin": 0x1B00, "end": 0x1B7F }, // Balinese
{ "begin": 0x1100, "end": 0x11FF }, // Hangul Jamo
{ "begin": 0x1E00, "end": 0x1EFF }, // Latin Extended Additional
{ "begin": 0x1F00, "end": 0x1FFF }, // Greek Extended
{ "begin": 0x2000, "end": 0x206F }, // General Punctuation
{ "begin": 0x2070, "end": 0x209F }, // Superscripts And Subscripts
{ "begin": 0x20A0, "end": 0x20CF }, // Currency Symbol
{ "begin": 0x20D0, "end": 0x20FF }, // Combining Diacritical Marks For Symbols
{ "begin": 0x2100, "end": 0x214F }, // Letterlike Symbols
{ "begin": 0x2150, "end": 0x218F }, // Number Forms
{ "begin": 0x2190, "end": 0x21FF }, // Arrows
{ "begin": 0x2200, "end": 0x22FF }, // Mathematical Operators
{ "begin": 0x2300, "end": 0x23FF }, // Miscellaneous Technical
{ "begin": 0x2400, "end": 0x243F }, // Control Pictures
{ "begin": 0x2440, "end": 0x245F }, // Optical Character Recognition
{ "begin": 0x2460, "end": 0x24FF }, // Enclosed Alphanumerics
{ "begin": 0x2500, "end": 0x257F }, // Box Drawing
{ "begin": 0x2580, "end": 0x259F }, // Block Elements
{ "begin": 0x25A0, "end": 0x25FF }, // Geometric Shapes
{ "begin": 0x2600, "end": 0x26FF }, // Miscellaneous Symbols
{ "begin": 0x2700, "end": 0x27BF }, // Dingbats
{ "begin": 0x3000, "end": 0x303F }, // CJK Symbols And Punctuation
{ "begin": 0x3040, "end": 0x309F }, // Hiragana
{ "begin": 0x30A0, "end": 0x30FF }, // Katakana
{ "begin": 0x3100, "end": 0x312F }, // Bopomofo
{ "begin": 0x3130, "end": 0x318F }, // Hangul Compatibility Jamo
{ "begin": 0xA840, "end": 0xA87F }, // Phags-pa
{ "begin": 0x3200, "end": 0x32FF }, // Enclosed CJK Letters And Months
{ "begin": 0x3300, "end": 0x33FF }, // CJK Compatibility
{ "begin": 0xAC00, "end": 0xD7AF }, // Hangul Syllables
{ "begin": 0xD800, "end": 0xDFFF }, // Non-Plane 0 *
{ "begin": 0x10900, "end": 0x1091F }, // Phoenicia
{ "begin": 0x4E00, "end": 0x9FFF }, // CJK Unified Ideographs
{ "begin": 0xE000, "end": 0xF8FF }, // Private Use Area (plane 0)
{ "begin": 0x31C0, "end": 0x31EF }, // CJK Strokes
{ "begin": 0xFB00, "end": 0xFB4F }, // Alphabetic Presentation Forms
{ "begin": 0xFB50, "end": 0xFDFF }, // Arabic Presentation Forms-A
{ "begin": 0xFE20, "end": 0xFE2F }, // Combining Half Marks
{ "begin": 0xFE10, "end": 0xFE1F }, // Vertical Forms
{ "begin": 0xFE50, "end": 0xFE6F }, // Small Form Variants
{ "begin": 0xFE70, "end": 0xFEFF }, // Arabic Presentation Forms-B
{ "begin": 0xFF00, "end": 0xFFEF }, // Halfwidth And Fullwidth Forms
{ "begin": 0xFFF0, "end": 0xFFFF }, // Specials
{ "begin": 0x0F00, "end": 0x0FFF }, // Tibetan
{ "begin": 0x0700, "end": 0x074F }, // Syriac
{ "begin": 0x0780, "end": 0x07BF }, // Thaana
{ "begin": 0x0D80, "end": 0x0DFF }, // Sinhala
{ "begin": 0x1000, "end": 0x109F }, // Myanmar
{ "begin": 0x1200, "end": 0x137F }, // Ethiopic
{ "begin": 0x13A0, "end": 0x13FF }, // Cherokee
{ "begin": 0x1400, "end": 0x167F }, // Unified Canadian Aboriginal Syllabics
{ "begin": 0x1680, "end": 0x169F }, // Ogham
{ "begin": 0x16A0, "end": 0x16FF }, // Runic
{ "begin": 0x1780, "end": 0x17FF }, // Khmer
{ "begin": 0x1800, "end": 0x18AF }, // Mongolian
{ "begin": 0x2800, "end": 0x28FF }, // Braille Patterns
{ "begin": 0xA000, "end": 0xA48F }, // Yi Syllables
{ "begin": 0x1700, "end": 0x171F }, // Tagalog
{ "begin": 0x10300, "end": 0x1032F }, // Old Italic
{ "begin": 0x10330, "end": 0x1034F }, // Gothic
{ "begin": 0x10400, "end": 0x1044F }, // Deseret
{ "begin": 0x1D000, "end": 0x1D0FF }, // Byzantine Musical Symbols
{ "begin": 0x1D400, "end": 0x1D7FF }, // Mathematical Alphanumeric Symbols
{ "begin": 0xFF000, "end": 0xFFFFD }, // Private Use (plane 15)
{ "begin": 0xFE00, "end": 0xFE0F }, // Variation Selectors
{ "begin": 0xE0000, "end": 0xE007F }, // Tags
{ "begin": 0x1900, "end": 0x194F }, // Limbu
{ "begin": 0x1950, "end": 0x197F }, // Tai Le
{ "begin": 0x1980, "end": 0x19DF }, // New Tai Lue
{ "begin": 0x1A00, "end": 0x1A1F }, // Buginese
{ "begin": 0x2C00, "end": 0x2C5F }, // Glagolitic
{ "begin": 0x2D30, "end": 0x2D7F }, // Tifinagh
{ "begin": 0x4DC0, "end": 0x4DFF }, // Yijing Hexagram Symbols
{ "begin": 0xA800, "end": 0xA82F }, // Syloti Nagri
{ "begin": 0x10000, "end": 0x1007F }, // Linear B Syllabary
{ "begin": 0x10140, "end": 0x1018F }, // Ancient Greek Numbers
{ "begin": 0x10380, "end": 0x1039F }, // Ugaritic
{ "begin": 0x103A0, "end": 0x103DF }, // Old Persian
{ "begin": 0x10450, "end": 0x1047F }, // Shavian
{ "begin": 0x10480, "end": 0x104AF }, // Osmanya
{ "begin": 0x10800, "end": 0x1083F }, // Cypriot Syllabary
{ "begin": 0x10A00, "end": 0x10A5F }, // Kharoshthi
{ "begin": 0x1D300, "end": 0x1D35F }, // Tai Xuan Jing Symbols
{ "begin": 0x12000, "end": 0x123FF }, // Cuneiform
{ "begin": 0x1D360, "end": 0x1D37F }, // Counting Rod Numerals
{ "begin": 0x1B80, "end": 0x1BBF }, // Sundanese
{ "begin": 0x1C00, "end": 0x1C4F }, // Lepcha
{ "begin": 0x1C50, "end": 0x1C7F }, // Ol Chiki
{ "begin": 0xA880, "end": 0xA8DF }, // Saurashtra
{ "begin": 0xA900, "end": 0xA92F }, // Kayah Li
{ "begin": 0xA930, "end": 0xA95F }, // Rejang
{ "begin": 0xAA00, "end": 0xAA5F }, // Cham
{ "begin": 0x10190, "end": 0x101CF }, // Ancient Symbols
{ "begin": 0x101D0, "end": 0x101FF }, // Phaistos Disc
{ "begin": 0x102A0, "end": 0x102DF }, // Carian
{ "begin": 0x1F030, "end": 0x1F09F } // Domino Tiles
];
function getUnicodeRangeFor(value) {
for (var i = 0; i < UnicodeRanges.length; i++) {
var range = UnicodeRanges[i];
if (value >= range.begin && value < range.end)
return i;
}
return -1;
};
/**
* 'Font' is the class the outside world should use, it encapsulate all the font
* decoding logics whatever type it is (assuming the font type is supported).
*
* For example to read a Type1 font and to attach it to the document:
* var type1Font = new Font("MyFontName", binaryFile, propertiesObject);
* type1Font.bind();
*/
var Font = (function () {
var constructor = function font_constructor(name, file, properties) {
this.name = name;
this.encoding = properties.encoding;
// If the font has already been decoded simply return it
if (Fonts.lookup(name)) {
this.font = Fonts.lookup(name).data;
return;
}
fontCount++;
fontName = name;
// If the font is to be ignored, register it like an already loaded font
// to avoid the cost of waiting for it be be loaded by the platform.
if (properties.ignore || kDisableFonts) {
Fonts.blacklistFont(name);
return;
}
var data;
switch (properties.type) {
case "Type1":
var cff = new CFF(name, file, properties);
this.mimetype = "font/opentype";
// Wrap the CFF data inside an OTF font file
data = this.convert(name, cff, properties);
break;
case "TrueType":
this.mimetype = "font/opentype";
// Repair the TrueType file if it is can be damaged in the point of
// view of the sanitizer
data = this.checkAndRepair(name, file, properties);
break;
default:
warn("Font " + properties.type + " is not supported");
break;
}
this.data = data;
Fonts.registerFont(name, data, properties);
};
function stringToArray(str) {
var array = [];
for (var i = 0; i < str.length; ++i)
array[i] = str.charCodeAt(i);
return array;
};
function int16(bytes) {
return (bytes[0] << 8) + (bytes[1] & 0xff);
};
function int32(bytes) {
return (bytes[0] << 24) + (bytes[1] << 16) +
(bytes[2] << 8) + (bytes[3] & 0xff);
};
function getMaxPower2(number) {
var maxPower = 0;
var value = number;
while (value >= 2) {
value /= 2;
maxPower++;
}
value = 2;
for (var i = 1; i < maxPower; i++)
value *= 2;
return value;
};
function string16(value) {
return String.fromCharCode((value >> 8) & 0xff) +
String.fromCharCode(value & 0xff);
};
function string32(value) {
return String.fromCharCode((value >> 24) & 0xff) +
String.fromCharCode((value >> 16) & 0xff) +
String.fromCharCode((value >> 8) & 0xff) +
String.fromCharCode(value & 0xff);
};
function createOpenTypeHeader(sfnt, file, offsets, numTables) {
// sfnt version (4 bytes)
var header = sfnt;
// numTables (2 bytes)
header += string16(numTables);
// searchRange (2 bytes)
var tablesMaxPower2 = getMaxPower2(numTables);
var searchRange = tablesMaxPower2 * 16;
header += string16(searchRange);
// entrySelector (2 bytes)
header += string16(Math.log(tablesMaxPower2) / Math.log(2));
// rangeShift (2 bytes)
header += string16(numTables * 16 - searchRange);
file.set(stringToArray(header), offsets.currentOffset);
offsets.currentOffset += header.length;
offsets.virtualOffset += header.length;
};
function createTableEntry(file, offsets, tag, data) {
// offset
var offset = offsets.virtualOffset;
// length
var length = data.length;
// Per spec tables must be 4-bytes align so add padding as needed
while (data.length & 3)
data.push(0x00);
while (offsets.virtualOffset & 3)
offsets.virtualOffset++;
// checksum
var checksum = 0;
for (var i = 0; i < length; i+=4)
checksum += int16([data[i], data[i+1], data[i+2], data[i+3]]);
var tableEntry = tag + string32(checksum) + string32(offset) + string32(length);
tableEntry = stringToArray(tableEntry);
file.set(tableEntry, offsets.currentOffset);
offsets.currentOffset += tableEntry.length;
offsets.virtualOffset += data.length;
};
function getRanges(glyphs) {
// Array.sort() sorts by characters, not numerically, so convert to an
// array of characters.
var codes = [];
var length = glyphs.length;
for (var n = 0; n < length; ++n)
codes.push(String.fromCharCode(glyphs[n].unicode))
codes.sort();
// Split the sorted codes into ranges.
var ranges = [];
for (var n = 0; n < length; ) {
var start = codes[n++].charCodeAt(0);
var end = start;
while (n < length && end + 1 == codes[n].charCodeAt(0)) {
++end;
++n;
}
ranges.push([start, end]);
}
return ranges;
};
function createCMapTable(glyphs) {
glyphs.push({ unicode: 0x0000 });
var ranges = getRanges(glyphs);
var numTables = 1;
var cmap = "\x00\x00" + // version
string16(numTables) + // numTables
"\x00\x03" + // platformID
"\x00\x01" + // encodingID
string32(4 + numTables * 8); // start of the table record
var headerSize = (12 * 2 + (ranges.length * 5 * 2));
var segCount = ranges.length + 1;
var segCount2 = segCount * 2;
var searchRange = getMaxPower2(segCount) * 2;
var searchEntry = Math.log(segCount) / Math.log(2);
var rangeShift = 2 * segCount - searchRange;
var format314 = "\x00\x04" + // format
string16(headerSize) + // length
"\x00\x00" + // language
string16(segCount2) +
string16(searchRange) +
string16(searchEntry) +
string16(rangeShift);
// Fill up the 4 parallel arrays describing the segments.
var startCount = "";
var endCount = "";
var idDeltas = "";
var idRangeOffsets = "";
var glyphsIds = "";
var bias = 0;
for (var i = 0; i < segCount - 1; i++) {
var range = ranges[i];
var start = range[0];
var end = range[1];
var delta = (bias - start) % 0xffff;
bias += (end - start + 1);
startCount += string16(start);
endCount += string16(end);
idDeltas += string16(delta);
idRangeOffsets += string16(0);
for (var j = start; j <= end; j++) {
glyphsIds += string16(j);
}
}
endCount += "\xFF\xFF";
startCount += "\xFF\xFF";
idDeltas += "\x00\x01";
idRangeOffsets += "\x00\x00";
format314 += endCount + "\x00\x00" + startCount +
idDeltas + idRangeOffsets + glyphsIds;
return stringToArray(cmap + format314);
};
function createOS2Table(properties) {
var ulUnicodeRange1 = 0;
var ulUnicodeRange2 = 0;
var ulUnicodeRange3 = 0;
var ulUnicodeRange4 = 0;
var charset = properties.charset;
if (charset && charset.length) {
var firstCharIndex = null;
var lastCharIndex = 0;
for (var i = 1; i < charset.length; i++) {
var code = GlyphsUnicode[charset[i]];
if (firstCharIndex > code || !firstCharIndex)
firstCharIndex = code;
if (lastCharIndex < code)
lastCharIndex = code;
var position = getUnicodeRangeFor(code);
if (position < 32) {
ulUnicodeRange1 |= 1 << position;
} else if (position < 64) {
ulUnicodeRange2 |= 1 << position - 32;
} else if (position < 96) {
ulUnicodeRange3 |= 1 << position - 64;
} else if (position < 123) {
ulUnicodeRange4 |= 1 << position - 96;
} else {
error("Unicode ranges Bits > 123 are reserved for internal usage");
}
}
}
return "\x00\x03" + // version
"\x02\x24" + // xAvgCharWidth
"\x01\xF4" + // usWeightClass
"\x00\x05" + // usWidthClass
"\x00\x00" + // fstype (0 to let the font loads via font-face on IE)
"\x02\x8A" + // ySubscriptXSize
"\x02\xBB" + // ySubscriptYSize
"\x00\x00" + // ySubscriptXOffset
"\x00\x8C" + // ySubscriptYOffset
"\x02\x8A" + // ySuperScriptXSize
"\x02\xBB" + // ySuperScriptYSize
"\x00\x00" + // ySuperScriptXOffset
"\x01\xDF" + // ySuperScriptYOffset
"\x00\x31" + // yStrikeOutSize
"\x01\x02" + // yStrikeOutPosition
"\x00\x00" + // sFamilyClass
"\x00\x00\x06" + String.fromCharCode(properties.fixedPitch ? 0x09 : 0x00) +
"\x00\x00\x00\x00\x00\x00" + // Panose
string32(ulUnicodeRange1) + // ulUnicodeRange1 (Bits 0-31)
string32(ulUnicodeRange2) + // ulUnicodeRange2 (Bits 32-63)
string32(ulUnicodeRange3) + // ulUnicodeRange3 (Bits 64-95)
string32(ulUnicodeRange4) + // ulUnicodeRange4 (Bits 96-127)
"\x2A\x32\x31\x2A" + // achVendID
string16(properties.italicAngle ? 1 : 0) + // fsSelection
string16(firstCharIndex || properties.firstChar) + // usFirstCharIndex
string16(lastCharIndex || properties.lastChar) + // usLastCharIndex
string16(properties.ascent) + // sTypoAscender
string16(properties.descent) + // sTypoDescender
"\x00\x64" + // sTypoLineGap (7%-10% of the unitsPerEM value)
string16(properties.ascent) + // usWinAscent
string16(-properties.descent) + // usWinDescent
"\x00\x00\x00\x00" + // ulCodePageRange1 (Bits 0-31)
"\x00\x00\x00\x00" + // ulCodePageRange2 (Bits 32-63)
string16(properties.xHeight) + // sxHeight
string16(properties.capHeight) + // sCapHeight
string16(0) + // usDefaultChar
string16(firstCharIndex || properties.firstChar) + // usBreakChar
"\x00\x03"; // usMaxContext
};
function createPostTable(properties) {
var angle = Math.floor(properties.italicAngle * (Math.pow(2, 16)));
return "\x00\x03\x00\x00" + // Version number
string32(angle) + // italicAngle
"\x00\x00" + // underlinePosition
"\x00\x00" + // underlineThickness
string32(properties.fixedPitch) + // isFixedPitch
"\x00\x00\x00\x00" + // minMemType42
"\x00\x00\x00\x00" + // maxMemType42
"\x00\x00\x00\x00" + // minMemType1
"\x00\x00\x00\x00"; // maxMemType1
};
constructor.prototype = {
name: null,
font: null,
mimetype: null,
encoding: null,
checkAndRepair: function font_checkAndRepair(name, font, properties) {
function readTableEntry(file) {
// tag
var tag = file.getBytes(4);
tag = String.fromCharCode(tag[0]) +
String.fromCharCode(tag[1]) +
String.fromCharCode(tag[2]) +
String.fromCharCode(tag[3]);
var checksum = int32(file.getBytes(4));
var offset = int32(file.getBytes(4));
var length = int32(file.getBytes(4));
// Read the table associated data
var previousPosition = file.pos;
file.pos = file.start ? file.start : 0;
file.skip(offset);
var data = file.getBytes(length);
file.pos = previousPosition;
return {
tag: tag,
checksum: checksum,
length: offset,
offset: length,
data: data
}
};
function readOpenTypeHeader(ttf) {
return {
version: ttf.getBytes(4),
numTables: int16(ttf.getBytes(2)),
searchRange: int16(ttf.getBytes(2)),
entrySelector: int16(ttf.getBytes(2)),
rangeShift: int16(ttf.getBytes(2))
}
};
function replaceCMapTable(cmap, font, properties) {
font.pos = (font.start ? font.start : 0) + cmap.length;
var version = int16(font.getBytes(2));
var numTables = int16(font.getBytes(2));
for (var i = 0; i < numTables; i++) {
var platformID = int16(font.getBytes(2));
var encodingID = int16(font.getBytes(2));
var offset = int32(font.getBytes(4));
var format = int16(font.getBytes(2));
var length = int16(font.getBytes(2));
var language = int16(font.getBytes(2));
if ((format == 0 && numTables == 1) ||
(format == 6 && numTables == 1 && !properties.encoding.empty)) {
// Format 0 alone is not allowed by the sanitizer so let's rewrite
// that to a 3-1-4 Unicode BMP table
TODO("Use an other source of informations than charset here, it is not reliable");
var charset = properties.charset;
var glyphs = [];
for (var j = 0; j < charset.length; j++) {
glyphs.push({
unicode: GlyphsUnicode[charset[j]] || 0
});
}
cmap.data = createCMapTable(glyphs);
} else if (format == 6 && numTables == 1) {
// Format 6 is a 2-bytes dense mapping, which means the font data
// lives glue together even if they are pretty far in the unicode
// table. (This looks weird, so I can have missed something), this
// works on Linux but seems to fails on Mac so let's rewrite the
// cmap table to a 3-1-4 style
var firstCode = int16(font.getBytes(2));
var entryCount = int16(font.getBytes(2));
var glyphs = [];
var min = 0xffff, max = 0;
for (var j = 0; j < entryCount; j++) {
var charcode = int16(font.getBytes(2));
glyphs.push(charcode);
if (charcode < min)
min = charcode;
if (charcode > max)
max = charcode;
}
// Since Format 6 is a dense array, check for gaps
for (var j = min; j < max; j++) {
if (glyphs.indexOf(j) == -1)
glyphs.push(j);
}
for (var j = 0; j < glyphs.length; j++)
glyphs[j] = { unicode: glyphs[j] + firstCode };
var ranges= getRanges(glyphs);
assert(ranges.length == 1, "Got " + ranges.length + " ranges in a dense array");
var encoding = properties.encoding;
var denseRange = ranges[0];
var start = denseRange[0];
var end = denseRange[1];
var index = firstCode;
for (var j = start; j <= end; j++)
encoding[index++] = glyphs[j - firstCode - 1].unicode;
cmap.data = createCMapTable(glyphs);
}
}
};
// Check that required tables are present
var requiredTables = [ "OS/2", "cmap", "head", "hhea",
"hmtx", "maxp", "name", "post" ];
var header = readOpenTypeHeader(font);
var numTables = header.numTables;
// This keep a reference to the CMap and the post tables since they can
// be rewritted
var cmap, post;
var tables = [];
for (var i = 0; i < numTables; i++) {
var table = readTableEntry(font);
var index = requiredTables.indexOf(table.tag);
if (index != -1) {
if (table.tag == "cmap")
cmap = table;
else if (table.tag == "post")
post = table;
requiredTables.splice(index, 1);
}
tables.push(table);
}
// If any tables are still in the array this means some required tables are
// missing, which means that we need to rebuild the font in order to pass
// the sanitizer.
if (requiredTables.length && requiredTables[0] == "OS/2") {
// Create a new file to hold the new version of our truetype with a new
// header and new offsets
var ttf = new Uint8Array(kMaxFontFileSize);
// The offsets object holds at the same time a representation of where
// to write the table entry information about a table and another offset
// representing the offset where to put the actual data of a particular
// table
var numTables = header.numTables + requiredTables.length;
var offsets = {
currentOffset: 0,
virtualOffset: numTables * (4 * 4)
};
// The new numbers of tables will be the last one plus the num of missing
// tables
createOpenTypeHeader("\x00\x01\x00\x00", ttf, offsets, numTables);
// Insert the missing table
tables.push({
tag: "OS/2",
data: stringToArray(createOS2Table(properties))
});
// Replace the old CMAP table with a shiny new one
replaceCMapTable(cmap, font, properties);
// Rewrite the 'post' table if needed
if (!post) {
tables.push({
tag: "post",
data: stringToArray(createPostTable(properties))
});
}
// Tables needs to be written by ascendant alphabetic order
tables.sort(function tables_sort(a, b) {
return (a.tag > b.tag) - (a.tag < b.tag);
});
// rewrite the tables but tweak offsets
for (var i = 0; i < tables.length; i++) {
var table = tables[i];
var data = [];
var tableData = table.data;
for (var j = 0; j < tableData.length; j++)
data.push(tableData[j]);
createTableEntry(ttf, offsets, table.tag, data);
}
// Add the table datas
for (var i = 0; i < tables.length; i++) {
var table = tables[i];
var tableData = table.data;
ttf.set(tableData, offsets.currentOffset);
offsets.currentOffset += tableData.length;
// 4-byte aligned data
while (offsets.currentOffset & 3)
offsets.currentOffset++;
}
var fontData = [];
for (var i = 0; i < offsets.currentOffset; i++)
fontData.push(ttf[i]);
return fontData;
} else if (requiredTables.length) {
error("Table " + requiredTables[0] + " is missing from the TrueType font");
}
return font.getBytes();
},
convert: function font_convert(fontName, font, properties) {
function createNameTable(name) {
// All the strings of the name table should be an odd number of bytes
if (name.length % 2)
name = name.slice(0, name.length - 1);
var strings = [
"Original licence", // 0.Copyright
name, // 1.Font family
"Unknown", // 2.Font subfamily (font weight)
"uniqueID", // 3.Unique ID
name, // 4.Full font name
"Version 0.11", // 5.Version
"Unknown", // 6.Postscript name
"Unknown", // 7.Trademark
"Unknown", // 8.Manufacturer
"Unknown" // 9.Designer
];
// Mac want 1-byte per character strings while Windows want
// 2-bytes per character, so duplicate the names table
var stringsUnicode = [];
for (var i = 0; i < strings.length; i++) {
var str = strings[i];
var strUnicode = "";
for (var j = 0; j < str.length; j++)
strUnicode += string16(str.charCodeAt(j));
stringsUnicode.push(strUnicode);
}
var names = [strings, stringsUnicode];
var platforms = ["\x00\x01", "\x00\x03"];
var encodings = ["\x00\x00", "\x00\x01"];
var languages = ["\x00\x00", "\x04\x09"];
var namesRecordCount = strings.length * platforms.length;
var nameTable =
"\x00\x00" + // format
string16(namesRecordCount) + // Number of names Record
string16(namesRecordCount * 12 + 6); // Storage
// Build the name records field
var strOffset = 0;
for (var i = 0; i < platforms.length; i++) {
var strs = names[i];
for (var j = 0; j < strs.length; j++) {
var str = strs[j];
var nameRecord =
platforms[i] + // platform ID
encodings[i] + // encoding ID
languages[i] + // language ID
string16(i) + // name ID
string16(str.length) +
string16(strOffset);
nameTable += nameRecord;
strOffset += str.length;
}
}
nameTable += strings.join("") + stringsUnicode.join("");
return nameTable;
}
function isFixedPitch(glyphs) {
for (var i = 0; i < glyphs.length - 1; i++) {
if (glyphs[i] != glyphs[i+1])
return false;
}
return true;
};
// The offsets object holds at the same time a representation of where
// to write the table entry information about a table and another offset
// representing the offset where to draw the actual data of a particular
// table
var kRequiredTablesCount = 9;
var offsets = {
currentOffset: 0,
virtualOffset: 9 * (4 * 4)
};
var otf = new Uint8Array(kMaxFontFileSize);
createOpenTypeHeader("\x4F\x54\x54\x4F", otf, offsets, 9);
var charstrings = font.charstrings;
properties.fixedPitch = isFixedPitch(charstrings);
var fields = {
// PostScript Font Program
"CFF ": font.data,
// OS/2 and Windows Specific metrics
"OS/2": stringToArray(createOS2Table(properties)),
// Character to glyphs mapping
"cmap": createCMapTable(charstrings.slice()),
// Font header
"head": (function() {
return stringToArray(
"\x00\x01\x00\x00" + // Version number
"\x00\x00\x10\x00" + // fontRevision
"\x00\x00\x00\x00" + // checksumAdjustement
"\x5F\x0F\x3C\xF5" + // magicNumber
"\x00\x00" + // Flags
"\x03\xE8" + // unitsPerEM (defaulting to 1000)
"\x00\x00\x00\x00\x9e\x0b\x7e\x27" + // creation date
"\x00\x00\x00\x00\x9e\x0b\x7e\x27" + // modifification date
"\x00\x00" + // xMin
string16(properties.descent) + // yMin
"\x0F\xFF" + // xMax
string16(properties.ascent) + // yMax
string16(properties.italicAngle ? 2 : 0) + // macStyle
"\x00\x11" + // lowestRecPPEM
"\x00\x00" + // fontDirectionHint
"\x00\x00" + // indexToLocFormat
"\x00\x00"); // glyphDataFormat
})(),
// Horizontal header
"hhea": (function() {
return stringToArray(
"\x00\x01\x00\x00" + // Version number
string16(properties.ascent) + // Typographic Ascent
string16(properties.descent) + // Typographic Descent
"\x00\x00" + // Line Gap
"\xFF\xFF" + // advanceWidthMax
"\x00\x00" + // minLeftSidebearing
"\x00\x00" + // minRightSidebearing
"\x00\x00" + // xMaxExtent
string16(properties.capHeight) + // caretSlopeRise
string16(Math.tan(properties.italicAngle) * properties.xHeight) + // caretSlopeRun
"\x00\x00" + // caretOffset
"\x00\x00" + // -reserved-
"\x00\x00" + // -reserved-
"\x00\x00" + // -reserved-
"\x00\x00" + // -reserved-
"\x00\x00" + // metricDataFormat
string16(charstrings.length + 1)); // Number of HMetrics
})(),
// Horizontal metrics
"hmtx": (function() {
var hmtx = "\x00\x00\x00\x00"; // Fake .notdef
for (var i = 0; i < charstrings.length; i++) {
hmtx += string16(charstrings[i].width) + string16(0);
}
return stringToArray(hmtx);
})(),
// Maximum profile
"maxp": (function() {
return stringToArray(
"\x00\x00\x50\x00" + // Version number
string16(charstrings.length + 1)); // Num of glyphs
})(),
// Naming tables
"name": stringToArray(createNameTable(fontName)),
// PostScript informations
"post": stringToArray(createPostTable(properties))
};
for (var field in fields)
createTableEntry(otf, offsets, field, fields[field]);
for (var field in fields) {
var table = fields[field];
otf.set(table, offsets.currentOffset);
offsets.currentOffset += table.length;
}
var fontData = [];
for (var i = 0; i < offsets.currentOffset; i++)
fontData.push(otf[i]);
return fontData;
},
bindWorker: function font_bindWorker(data) {
postMessage({
action: "font",
data: {
raw: data,
fontName: this.name,
mimetype: this.mimetype
}
});
},
bindDOM: function font_bindDom(data) {
var fontName = this.name;
// Add the @font-face rule to the document
var url = "url(data:" + this.mimetype + ";base64," + window.btoa(data) + ");";
var rule = "@font-face { font-family:'" + fontName + "';src:" + url + "}";
var styleSheet = document.styleSheets[0];
styleSheet.insertRule(rule, styleSheet.cssRules.length);
return rule;
}
};
return constructor;
})();
/**
* Type1Parser encapsulate the needed code for parsing a Type1 font
* program.
* Some of its logic depends on the Type2 charstrings structure.
*/
var Type1Parser = function() {
/*
* Decrypt a Sequence of Ciphertext Bytes to Produce the Original Sequence
* of Plaintext Bytes. The function took a key as a parameter which can be
* for decrypting the eexec block of for decoding charStrings.
*/
var kEexecEncryptionKey = 55665;
var kCharStringsEncryptionKey = 4330;
function decrypt(stream, key, discardNumber) {
var r = key, c1 = 52845, c2 = 22719;
var decryptedString = [];
var value = "";
var count = stream.length;
for (var i = 0; i < count; i++) {
value = stream[i];
decryptedString[i] = value ^ (r >> 8);
r = ((value + r) * c1 + c2) & ((1 << 16) - 1);
}
return decryptedString.slice(discardNumber);
};
/*
* CharStrings are encoded following the the CharString Encoding sequence
* describe in Chapter 6 of the "Adobe Type1 Font Format" specification.
* The value in a byte indicates a command, a number, or subsequent bytes
* that are to be interpreted in a special way.
*
* CharString Number Encoding:
* A CharString byte containing the values from 32 through 255 inclusive
* indicate an integer. These values are decoded in four ranges.
*
* 1. A CharString byte containing a value, v, between 32 and 246 inclusive,
* indicate the integer v - 139. Thus, the integer values from -107 through
* 107 inclusive may be encoded in single byte.
*
* 2. A CharString byte containing a value, v, between 247 and 250 inclusive,
* indicates an integer involving the next byte, w, according to the formula:
* [(v - 247) x 256] + w + 108
*
* 3. A CharString byte containing a value, v, between 251 and 254 inclusive,
* indicates an integer involving the next byte, w, according to the formula:
* -[(v - 251) * 256] - w - 108
*
* 4. A CharString containing the value 255 indicates that the next 4 bytes
* are a two complement signed integer. The first of these bytes contains the
* highest order bits, the second byte contains the next higher order bits
* and the fourth byte contain the lowest order bits.
*
*
* CharString Command Encoding:
* CharStrings commands are encoded in 1 or 2 bytes.
*
* Single byte commands are encoded in 1 byte that contains a value between
* 0 and 31 inclusive.
* If a command byte contains the value 12, then the value in the next byte
* indicates a command. This "escape" mechanism allows many extra commands
* to be encoded and this encoding technique helps to minimize the length of
* the charStrings.
*/
var charStringDictionary = {
"1": "hstem",
"3": "vstem",
"4": "vmoveto",
"5": "rlineto",
"6": "hlineto",
"7": "vlineto",
"8": "rrcurveto",
// closepath is a Type1 command that do not take argument and is useless
// in Type2 and it can simply be ignored.
"9": null, // closepath
"10": "callsubr",
// return is normally used inside sub-routines to tells to the execution
// flow that it can be back to normal.
// During the translation process Type1 charstrings will be flattened and
// sub-routines will be embedded directly into the charstring directly, so
// this can be ignored safely.
"11": "return",
"12": {
// dotsection is a Type1 command to specify some hinting feature for dots
// that do not take a parameter and it can safely be ignored for Type2.
"0": null, // dotsection
// [vh]stem3 are Type1 only and Type2 supports [vh]stem with multiple
// parameters, so instead of returning [vh]stem3 take a shortcut and
// return [vhstem] instead.
"1": "vstem",
"2": "hstem",
// Type1 only command with command not (yet) built-in ,throw an error
"6": -1, // seac
"7": -1, //sbw
"11": "sub",
"12": "div",
// callothersubr is a mechanism to make calls on the postscript
// interpreter, this is not supported by Type2 charstring but hopefully
// most of the default commands can be ignored safely.
"16": "callothersubr",
"17": "pop",
// setcurrentpoint sets the current point to x, y without performing a
// moveto (this is a one shot positionning command). This is used only
// with the return of an OtherSubrs call.
// TODO Implement the OtherSubrs charstring embedding and replace this
// call by a no-op, like 2 'pop' commands for example.
"33": null, //setcurrentpoint
},
"13": "hsbw",
"14": "endchar",
"21": "rmoveto",
"22": "hmoveto",
"30": "vhcurveto",
"31": "hvcurveto"
};
var kEscapeCommand = 12;
function decodeCharString(array) {
var charstring = [];
var lsb = 0;
var width = 0;
var used = false;
var value = "";
var count = array.length;
for (var i = 0; i < count; i++) {
value = parseInt(array[i]);
if (value < 32) {
var command = null;
if (value == kEscapeCommand) {
var escape = array[++i];
// TODO Clean this code
if (escape == 16) {
var index = charstring.pop();
var argc = charstring.pop();
var data = charstring.pop();
// If the flex mechanishm is not used in a font program, Adobe
// state that that entries 0, 1 and 2 can simply be replace by
// {}, which means that we can simply ignore them.
if (index < 3) {
continue;
}
// This is the same things about hint replacement, if it is not used
// entry 3 can be replaced by {3}
if (index == 3) {
charstring.push(3);
i++;
continue;
}
}
command = charStringDictionary["12"][escape];
} else {
// TODO Clean this code
if (value == 13) {
if (charstring.length == 2) {
width = charstring[1];
} else if (charstring.length == 4 && charstring[3] == "div") {
width = charstring[1] / charstring[2];
} else {
error("Unsupported hsbw format: " + charstring);
}
lsb = charstring[0];
charstring.push(lsb, "hmoveto");
charstring.splice(0, 1);
continue;
}
command = charStringDictionary[value];
}
// Some charstring commands are meaningless in Type2 and will return
// a null, let's just ignored them
if (!command && i < count) {
continue;
} else if (!command) {
break;
} else if (command == -1) {
error("Support for Type1 command " + value + " (" + escape + ") is not implemented in charstring: " + charString);
}
value = command;
} else if (value <= 246) {
value = parseInt(value) - 139;
} else if (value <= 250) {
value = ((value - 247) * 256) + parseInt(array[++i]) + 108;
} else if (value <= 254) {
value = -((value - 251) * 256) - parseInt(array[++i]) - 108;
} else {
value = (array[++i] & 0xff) << 24 | (array[++i] & 0xff) << 16 |
(array[++i] & 0xff) << 8 | (array[++i] & 0xff) << 0;
}
charstring.push(value);
}
return { charstring: charstring, width: width, lsb: lsb };
};
/**
* Returns an object containing a Subrs array and a CharStrings array
* extracted from and eexec encrypted block of data
*/
function readNumberArray(str, index) {
var start = ++index;
var count = 0;
while (str[index++] != "]")
count++;
var array = str.substr(start, count).split(" ");
for (var i = 0; i < array.length; i++)
array[i] = parseFloat(array[i] || 0);
return array;
};
this.extractFontProgram = function t1_extractFontProgram(stream) {
var eexec = decrypt(stream, kEexecEncryptionKey, 4);
var eexecString = "";
for (var i = 0; i < eexec.length; i++)
eexecString += String.fromCharCode(eexec[i]);
var glyphsSection = false, subrsSection = false;
var extracted = {
subrs: [],
charstrings: [],
properties: {
stemSnapH: [0, 0],
stemSnapV: [0, 0]
}
};
var glyph = "";
var token = "";
var length = 0;
var c = "";
var count = eexecString.length;
for (var i = 0; i < count; i++) {
var c = eexecString[i];
if ((glyphsSection || subrsSection) && c == "R") {
var data = eexec.slice(i + 3, i + 3 + length);
var encoded = decrypt(data, kCharStringsEncryptionKey, 4);
var str = decodeCharString(encoded);
if (glyphsSection) {
extracted.charstrings.push({
glyph: glyph,
data: str.charstring,
lsb: str.lsb,
width: str.width
});
} else {
extracted.subrs.push(str.charstring);
}
i += length + 3;
} else if (c == " " || c == "\n") {
length = parseInt(token);
token = "";
} else {
token += c;
if (!glyphsSection) {
switch (token) {
case "/CharString":
glyphsSection = true;
break;
case "/Subrs":
subrsSection = true;
break;
case "/StdHW":
extracted.properties.stdHW = readNumberArray(eexecString, i + 2)[0];
break;
case "/StdVW":
extracted.properties.stdVW = readNumberArray(eexecString, i + 2)[0];
break;
case "/StemSnapH":
extracted.properties.stemSnapH = readNumberArray(eexecString, i + 2);
break;
case "/StemSnapV":
extracted.properties.stemSnapV = readNumberArray(eexecString, i + 2);
break;
}
} else if (c == "/") {
token = glyph = "";
while ((c = eexecString[++i]) != " ")
glyph += c;
}
}
}
return extracted;
},
this.extractFontHeader = function t1_extractFontProgram(stream) {
var headerString = "";
for (var i = 0; i < stream.length; i++)
headerString += String.fromCharCode(stream[i]);
var info = {
textMatrix: null
};
var token = "";
var count = headerString.length;
for (var i = 0; i < count; i++) {
var c = headerString[i];
if (c == " " || c == "\n") {
switch (token) {
case "/FontMatrix":
var matrix = readNumberArray(headerString, i + 1);
// The FontMatrix is in unitPerEm, so make it pixels
for (var j = 0; j < matrix.length; j++)
matrix[j] *= 1000;
// Make the angle into the right direction
matrix[2] *= -1;
info.textMatrix = matrix;
break;
}
token = "";
} else {
token += c;
}
}
return info;
};
};
/**
* The CFF class takes a Type1 file and wrap it into a 'Compact Font Format',
* which itself embed Type2 charstrings.
*/
var CFFStrings = [
".notdef","space","exclam","quotedbl","numbersign","dollar","percent","ampersand",
"quoteright","parenleft","parenright","asterisk","plus","comma","hyphen","period",
"slash","zero","one","two","three","four","five","six","seven","eight","nine",
"colon","semicolon","less","equal","greater","question","at","A","B","C","D","E",
"F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y",
"Z","bracketleft","backslash","bracketright","asciicircum","underscore",
"quoteleft","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q",
"r","s","t","u","v","w","x","y","z","braceleft","bar","braceright","asciitilde",
"exclamdown","cent","sterling","fraction","yen","florin","section","currency",
"quotesingle","quotedblleft","guillemotleft","guilsinglleft","guilsinglright",
"fi","fl","endash","dagger","daggerdbl","periodcentered","paragraph","bullet",
"quotesinglbase","quotedblbase","quotedblright","guillemotright","ellipsis",
"perthousand","questiondown","grave","acute","circumflex","tilde","macron",
"breve","dotaccent","dieresis","ring","cedilla","hungarumlaut","ogonek","caron",
"emdash","AE","ordfeminine","Lslash","Oslash","OE","ordmasculine","ae","dotlessi",
"lslash","oslash","oe","germandbls","onesuperior","logicalnot","mu","trademark",
"Eth","onehalf","plusminus","Thorn","onequarter","divide","brokenbar","degree",
"thorn","threequarters","twosuperior","registered","minus","eth","multiply",
"threesuperior","copyright","Aacute","Acircumflex","Adieresis","Agrave","Aring",
"Atilde","Ccedilla","Eacute","Ecircumflex","Edieresis","Egrave","Iacute",
"Icircumflex","Idieresis","Igrave","Ntilde","Oacute","Ocircumflex","Odieresis",
"Ograve","Otilde","Scaron","Uacute","Ucircumflex","Udieresis","Ugrave","Yacute",
"Ydieresis","Zcaron","aacute","acircumflex","adieresis","agrave","aring","atilde",
"ccedilla","eacute","ecircumflex","edieresis","egrave","iacute","icircumflex",
"idieresis","igrave","ntilde","oacute","ocircumflex","odieresis","ograve",
"otilde","scaron","uacute","ucircumflex","udieresis","ugrave","yacute",
"ydieresis","zcaron","exclamsmall","Hungarumlautsmall","dollaroldstyle",
"dollarsuperior","ampersandsmall","Acutesmall","parenleftsuperior",
"parenrightsuperior","266 ff","onedotenleader","zerooldstyle","oneoldstyle",
"twooldstyle","threeoldstyle","fouroldstyle","fiveoldstyle","sixoldstyle",
"sevenoldstyle","eightoldstyle","nineoldstyle","commasuperior",
"threequartersemdash","periodsuperior","questionsmall","asuperior","bsuperior",
"centsuperior","dsuperior","esuperior","isuperior","lsuperior","msuperior",
"nsuperior","osuperior","rsuperior","ssuperior","tsuperior","ff","ffi","ffl",
"parenleftinferior","parenrightinferior","Circumflexsmall","hyphensuperior",
"Gravesmall","Asmall","Bsmall","Csmall","Dsmall","Esmall","Fsmall","Gsmall",
"Hsmall","Ismall","Jsmall","Ksmall","Lsmall","Msmall","Nsmall","Osmall","Psmall",
"Qsmall","Rsmall","Ssmall","Tsmall","Usmall","Vsmall","Wsmall","Xsmall","Ysmall",
"Zsmall","colonmonetary","onefitted","rupiah","Tildesmall","exclamdownsmall",
"centoldstyle","Lslashsmall","Scaronsmall","Zcaronsmall","Dieresissmall",
"Brevesmall","Caronsmall","Dotaccentsmall","Macronsmall","figuredash",
"hypheninferior","Ogoneksmall","Ringsmall","Cedillasmall","questiondownsmall",
"oneeighth","threeeighths","fiveeighths","seveneighths","onethird","twothirds",
"zerosuperior","foursuperior","fivesuperior","sixsuperior","sevensuperior",
"eightsuperior","ninesuperior","zeroinferior","oneinferior","twoinferior",
"threeinferior","fourinferior","fiveinferior","sixinferior","seveninferior",
"eightinferior","nineinferior","centinferior","dollarinferior","periodinferior",
"commainferior","Agravesmall","Aacutesmall","Acircumflexsmall","Atildesmall",
"Adieresissmall","Aringsmall","AEsmall","Ccedillasmall","Egravesmall",
"Eacutesmall","Ecircumflexsmall","Edieresissmall","Igravesmall","Iacutesmall",
"Icircumflexsmall","Idieresissmall","Ethsmall","Ntildesmall","Ogravesmall",
"Oacutesmall","Ocircumflexsmall","Otildesmall","Odieresissmall","OEsmall",
"Oslashsmall","Ugravesmall","Uacutesmall","Ucircumflexsmall","Udieresissmall",
"Yacutesmall","Thornsmall","Ydieresissmall","001.000","001.001","001.002",
"001.003","Black","Bold","Book","Light","Medium","Regular","Roman","Semibold"
];
var type1Parser = new Type1Parser();
var CFF = function(name, file, properties) {
// Get the data block containing glyphs and subrs informations
var length1 = file.dict.get("Length1");
var length2 = file.dict.get("Length2");
var headerBlock = file.getBytes(length1);
var header = type1Parser.extractFontHeader(headerBlock);
for (var info in header)
properties[info] = header[info];
// Decrypt the data blocks and retrieve it's content
var eexecBlock = file.getBytes(length2);
var data = type1Parser.extractFontProgram(eexecBlock);
for (var info in data.properties)
properties[info] = data.properties[info];
var charstrings = this.getOrderedCharStrings(data.charstrings);
var type2Charstrings = this.getType2Charstrings(charstrings);
var subrs = this.getType2Subrs(data.subrs);
this.charstrings = charstrings;
this.data = this.wrap(name, type2Charstrings, this.charstrings, subrs, properties);
};
CFF.prototype = {
createCFFIndexHeader: function cff_createCFFIndexHeader(objects, isByte) {
// First 2 bytes contains the number of objects contained into this index
var count = objects.length;
// If there is no object, just create an array saying that with another
// offset byte.
if (count == 0)
return "\x00\x00\x00";
var data = String.fromCharCode(count >> 8, count & 0xff);
// Next byte contains the offset size use to reference object in the file
// Actually we're using 0x04 to be sure to be able to store everything
// without thinking of it while coding.
data += "\x04";
// Add another offset after this one because we need a new offset
var relativeOffset = 1;
for (var i = 0; i < count + 1; i++) {
data += String.fromCharCode(relativeOffset >> 24, relativeOffset >> 16,
relativeOffset >> 8, relativeOffset & 0xff);
if (objects[i])
relativeOffset += objects[i].length;
}
for (var i =0; i < count; i++) {
for (var j = 0; j < objects[i].length; j++)
data += isByte ? String.fromCharCode(objects[i][j]) : objects[i][j];
}
return data;
},
encodeNumber: function cff_encodeNumber(value) {
if (value >= -32768 && value <= 32767) {
return "\x1c" +
String.fromCharCode(value >> 8) +
String.fromCharCode(value & 0xFF);
} else if (value >= (-2147483647-1) && value <= 2147483647) {
return "\xff" +
String.fromCharCode(value >> 24) +
String.fromCharCode(value >> 16) +
String.fromCharCode(value >> 8) +
String.fromCharCode(value & 0xFF);
}
error("Value: " + value + " is not allowed");
return null;
},
getOrderedCharStrings: function cff_getOrderedCharStrings(glyphs) {
var charstrings = [];
for (var i = 0; i < glyphs.length; i++) {
var glyph = glyphs[i];
var unicode = GlyphsUnicode[glyph.glyph];
if (!unicode) {
if (glyph.glyph != ".notdef")
warn(glyph + " does not have an entry in the glyphs unicode dictionary");
} else {
charstrings.push({
glyph: glyph,
unicode: unicode,
charstring: glyph.data,
width: glyph.width,
lsb: glyph.lsb
});
}
};
charstrings.sort(function charstrings_sort(a, b) {
return a.unicode - b.unicode;
});
return charstrings;
},
getType2Charstrings: function cff_getType2Charstrings(type1Charstrings) {
var type2Charstrings = [];
var count = type1Charstrings.length;
for (var i = 0; i < count; i++) {
var charstring = type1Charstrings[i].charstring;
type2Charstrings.push(this.flattenCharstring(charstring.slice(), this.commandsMap));
}
return type2Charstrings;
},
getType2Subrs: function cff_getType2Charstrings(type1Subrs) {
var bias = 0;
var count = type1Subrs.length;
if (count < 1240)
bias = 107;
else if (count < 33900)
bias = 1131;
else
bias = 32768;
// Add a bunch of empty subrs to deal with the Type2 bias
var type2Subrs = [];
for (var i = 0; i < bias; i++)
type2Subrs.push([0x0B]);
for (var i = 0; i < count; i++)
type2Subrs.push(this.flattenCharstring(type1Subrs[i], this.commandsMap));
return type2Subrs;
},
/*
* Flatten the commands by interpreting the postscript code and replacing
* every 'callsubr', 'callothersubr' by the real commands.
*/
commandsMap: {
"hstem": 1,
"vstem": 3,
"vmoveto": 4,
"rlineto": 5,
"hlineto": 6,
"vlineto": 7,
"rrcurveto": 8,
"callsubr": 10,
"return": 11,
"sub": [12, 11],
"div": [12, 12],
"pop": [1, 12, 18],
"endchar": 14,
"rmoveto": 21,
"hmoveto": 22,
"vhcurveto": 30,
"hvcurveto": 31,
},
flattenCharstring: function flattenCharstring(charstring, map) {
for (var i = 0; i < charstring.length; i++) {
var command = charstring[i];
if (command.charAt) {
var cmd = map[command];
assert(cmd, "Unknow command: " + command);
if (IsArray(cmd)) {
charstring.splice(i++, 1, cmd[0], cmd[1]);
} else {
charstring[i] = cmd;
}
} else {
charstring.splice(i, 1, 28, command >> 8, command & 0xff);
i+= 2;
}
}
return charstring;
},
wrap: function wrap(name, glyphs, charstrings, subrs, properties) {
var fields = {
"header": "\x01\x00\x04\x04", // major version, minor version, header size, offset size
"names": this.createCFFIndexHeader([name]),
"topDict": (function topDict(self) {
return function() {
var dict =
"\x00\x01\x01\x01\x30" +
"\xf8\x1b\x00" + // version
"\xf8\x1b\x01" + // Notice
"\xf8\x1b\x02" + // FullName
"\xf8\x1b\x03" + // FamilyName
"\xf8\x1b\x04" + // Weight
"\x1c\x00\x00\x10"; // Encoding
var boundingBox = properties.bbox;
for (var i = 0; i < boundingBox.length; i++)
dict += self.encodeNumber(boundingBox[i]);
dict += "\x05"; // FontBBox;
var offset = fields.header.length +
fields.names.length +
(dict.length + (4 + 4 + 7)) +
fields.strings.length +
fields.globalSubrs.length;
dict += self.encodeNumber(offset) + "\x0f"; // Charset
offset = offset + (glyphs.length * 2) + 1;
dict += self.encodeNumber(offset) + "\x11"; // Charstrings
dict += self.encodeNumber(fields.private.length);
var offset = offset + fields.charstrings.length;
dict += self.encodeNumber(offset) + "\x12"; // Private
return dict;
};
})(this),
"strings": (function strings(self) {
var strings = [
"Version 0.11", // Version
"See original notice", // Notice
name, // FullName
name, // FamilyName
"Medium" // Weight
];
return self.createCFFIndexHeader(strings);
})(this),
"globalSubrs": this.createCFFIndexHeader([]),
"charset": (function charset(self) {
var charset = "\x00"; // Encoding
var count = glyphs.length;
for (var i = 0; i < count; i++) {
var index = CFFStrings.indexOf(charstrings[i].glyph.glyph);
// Some characters like asterikmath && circlecopyrt are missing from the
// original strings, for the moment let's map them to .notdef and see
// later if it cause any problems
if (index == -1)
index = 0;
charset += String.fromCharCode(index >> 8, index & 0xff);
}
return charset;
})(this),
"charstrings": this.createCFFIndexHeader([[0x8B, 0x0E]].concat(glyphs), true),
"private": (function(self) {
var data =
"\x8b\x14" + // defaultWidth
"\x8b\x15" + // nominalWidth
self.encodeNumber(properties.stdHW || 0) + "\x0a" + // StdHW
self.encodeNumber(properties.stdVW || 0) + "\x0b"; // StdVW
var stemH = properties.stemSnapH;
for (var i = 0; i < stemH.length; i++)
data += self.encodeNumber(stemH[i]);
data += "\x0c\x0c"; // StemSnapH
var stemV = properties.stemSnapV;
for (var i = 0; i < stemV.length; i++)
data += self.encodeNumber(stemV[i]);
data += "\x0c\x0d"; // StemSnapV
data += self.encodeNumber(data.length + 4) + "\x13"; // Subrs offset
return data;
})(this),
"localSubrs": this.createCFFIndexHeader(subrs, true)
};
fields.topDict = fields.topDict();
var cff = [];
for (var index in fields) {
var field = fields[index];
for (var i = 0; i < field.length; i++)
cff.push(field.charCodeAt(i));
}
return cff;
}
};