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Moving all symbolic font glyphs into 0xF000 - 0xF0FF range

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notmasteryet 2012-02-20 17:19:12 -06:00
parent 2703f3f692
commit a46a684935
3 changed files with 20 additions and 6 deletions
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17
src/fonts.js
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@ -11,6 +11,7 @@ var kMaxWaitForFontFace = 1000;
// Unicode Private Use Area
var kCmapGlyphOffset = 0xE000;
var kSizeOfGlyphArea = 0x1900;
var kSymbolicFontGlyphOffset = 0xF000;
// PDF Glyph Space Units are one Thousandth of a TextSpace Unit
// except for Type 3 fonts
@ -1888,7 +1889,7 @@ var Font = (function FontClosure() {
}
}
// if it is, replacing with meaningful toUnicode values
if (isIdentity) {
if (isIdentity && !this.isSymbolicFont) {
var usedUnicodes = [], unassignedUnicodeItems = [];
for (var i = 0, ii = glyphs.length; i < ii; i++) {
var unicode = toUnicode[i + 1];
@ -1940,11 +1941,15 @@ var Font = (function FontClosure() {
}
}
// If font is symbolic and cmap (3,0) present, the characters can be
// located in 0xF000 - 0xF0FF range. Using the first glyph code
// to detect the base glyphs offset.
this.symbolicGlyphsOffset = this.isSymbolicFont && !hasShortCmap ?
(glyphs[0].unicode & 0xFF00) : 0;
// Moving all symbolic font glyphs into 0xF000 - 0xF0FF range.
this.symbolicGlyphsOffset = 0;
if (this.isSymbolicFont) {
for (var i = 0, ii = glyphs.length; i < ii; i++) {
var code = glyphs[i].unicode;
glyphs[i].unicode = kSymbolicFontGlyphOffset | (code & 0xFF);
}
this.symbolicGlyphsOffset = kSymbolicFontGlyphOffset;
}
// remove glyph references outside range of avaialable glyphs
for (var i = 0, ii = ids.length; i < ii; i++) {