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Fix CIDFontType2 large cmap tables

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notmasteryet 2011-11-28 19:47:37 -06:00
parent 08e3fd88ad
commit e4e864766d
1 changed files with 21 additions and 11 deletions
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32
src/fonts.js
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@ -1701,27 +1701,37 @@ var Font = (function Font() {
} }
var glyphs = [], ids = []; var glyphs = [], ids = [];
var usedUnicodes = [], unusedUnicode = kCmapGlyphOffset; var usedUnicodes = [];
var cidToGidMap = properties.cidToGidMap; var cidToGidMap = properties.cidToGidMap;
for (i = 1; i < numGlyphs; i++) { var unassignedUnicodeItems = [];
for (var i = 1; i < numGlyphs; i++) {
var cid = cidToGidMap ? cidToGidMap.indexOf(i) : i; var cid = cidToGidMap ? cidToGidMap.indexOf(i) : i;
var unicode = this.toUnicode[cid]; var unicode = this.toUnicode[cid];
if (!unicode || isSpecialUnicode(unicode) || if (!unicode || isSpecialUnicode(unicode) ||
unicode in usedUnicodes) { unicode in usedUnicodes) {
// overriding the special special symbols mapping unassignedUnicodeItems.push(i);
while (unusedUnicode in usedUnicodes) continue;
unusedUnicode++;
this.toUnicode[cid] = unicode = unusedUnicode++;
if (unusedUnicode >= kCmapGlyphOffset + kSizeOfGlyphArea) {
// overflow of the user defined symblos range
// using symbols that a little bit lower than this range
unusedUnicode = kCmapGlyphOffset - numGlyphs;
}
} }
usedUnicodes[unicode] = true; usedUnicodes[unicode] = true;
glyphs.push({ unicode: unicode, code: cid }); glyphs.push({ unicode: unicode, code: cid });
ids.push(i); ids.push(i);
} }
// checking if unassigned symbols will fit the user defined symbols
// if those symbols too many, probably they will not be used anyway
if (unassignedUnicodeItems.length <= kSizeOfGlyphArea) {
var unusedUnicode = kCmapGlyphOffset;
for (var j = 0, jj = unassignedUnicodeItems.length; j < jj; j++) {
var i = unassignedUnicodeItems[j];
var cid = cidToGidMap ? cidToGidMap.indexOf(i) : i;
while (unusedUnicode in usedUnicodes)
unusedUnicode++;
var unicode = unusedUnicode++;
this.toUnicode[cid] = unicode;
usedUnicodes[unicode] = true;
glyphs.push({ unicode: unicode, code: cid });
ids.push(i);
}
}
cmap.data = createCMapTable(glyphs, ids); cmap.data = createCMapTable(glyphs, ids);
} else { } else {
var cmapTable = readCMapTable(cmap, font); var cmapTable = readCMapTable(cmap, font);