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Second pass CIDFont support - make Arial Unicode in OpenOffice PDF

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- supports PDF fonts with CIDtoGIDMap and no cmap
This commit is contained in:
Adil Allawi 2011-07-11 17:41:47 +01:00
parent ea2d651709
commit 7b8542c6a7
2 changed files with 125 additions and 43 deletions
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108
fonts.js
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@ -404,12 +404,21 @@ var Font = (function() {
data = this.checkAndRepair(name, file, properties);
break;
case 'Type0':
//this is a Truetype font
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;
this.type = properties.type; //use the type to test if the string is single or multi-byte
this.id = Fonts.registerFont(name, data, properties);
this.loadedName = 'pdfFont' + this.id;
};
@ -856,8 +865,26 @@ var Font = (function() {
data: stringToArray(createOS2Table(properties))
});
// Replace the old CMAP table with a shiny new one
replaceCMapTable(cmap, font, properties);
if (!cmap) {
var glyphs = [];
var charset = properties.charset;
for (var i=1; i < charset.length; i++) {
if (charset.indexOf(i) != -1) {
glyphs.push({
unicode: charset.indexOf(i)
});
} else {
break;
}
}
tables.push({
tag: 'cmap',
data: createCMapTable(glyphs)
})
} else {
// Replace the old CMAP table with a shiny new one
replaceCMapTable(cmap, font, properties);
}
// Rewrite the 'post' table if needed
if (!post) {
@ -1110,44 +1137,63 @@ var Font = (function() {
charsToUnicode: function fonts_chars2Unicode(chars) {
var charsCache = this.charsCache;
var str;
// if we translated this string before, just grab it from the cache
if (charsCache) {
var str = charsCache[chars];
str = charsCache[chars];
if (str)
return str;
}
// translate the string using the font's encoding
var encoding = this.encoding;
if (!encoding)
return chars;
// lazily create the translation cache
if (!charsCache)
charsCache = this.charsCache = Object.create(null);
str = '';
for (var i = 0; i < chars.length; ++i) {
var charcode = chars.charCodeAt(i);
var unicode = encoding[charcode];
if ('undefined' == typeof(unicode)) {
// FIXME/issue 233: we're hitting this in test/pdf/sizes.pdf
// at the moment, for unknown reasons.
warn('Unencoded charcode '+ charcode);
unicode = charcode;
if (this.type == "Type0") {
//string needs to be converted from byte to multi-byte assume for now two-byte
str = '';
var multiByteStr = "";
var length = chars.length;
for (var i = 0; i < length; i++) {
var byte1 = chars.charCodeAt(i++) & 0xFF;
var byte2;
if (i == length)
byte2 = 0;
else
byte2 = chars.charCodeAt(i) & 0xFF;
multiByteStr += String.fromCharCode((byte1<<8) | byte2);
}
// 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 = multiByteStr;
}
else {
// translate the string using the font's encoding
var encoding = this.encoding;
if (!encoding)
return chars;
str = '';
for (var i = 0; i < chars.length; ++i) {
var charcode = chars.charCodeAt(i);
var unicode = encoding[charcode];
if ('undefined' == typeof(unicode)) {
// FIXME/issue 233: we're hitting this in test/pdf/sizes.pdf
// at the moment, for unknown reasons.
warn('Unencoded charcode '+ charcode);
unicode = 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);
}
str += String.fromCharCode(unicode);
}
// Enter the translated string into the cache