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Fixes creation of OS/2 table

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This commit is contained in:
Yury Delendik 2013-01-04 11:41:24 -06:00
parent bf0abd61d1
commit aa93eac261
1 changed files with 17 additions and 16 deletions
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33
src/fonts.js
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@ -2646,25 +2646,25 @@ var Font = (function FontClosure() {
lastCharIndex = 255;
}
var unitsPerEm = override.unitsPerEm || PDF_GLYPH_SPACE_UNITS;
var typoAscent = override.ascent || properties.ascent;
var typoDescent = override.descent || properties.descent;
var bbox = properties.bbox || [0, 0, 0, 0];
var unitsPerEm = override.unitsPerEm ||
1 / (properties.fontMatrix || FONT_IDENTITY_MATRIX)[0];
// if the font units differ to the PDF glyph space units
// then scale up the values
var scale = properties.ascentScaled ? 1.0 :
unitsPerEm / PDF_GLYPH_SPACE_UNITS;
var typoAscent = override.ascent || Math.round(scale *
(properties.ascent || bbox[3]));
var typoDescent = override.descent || Math.round(scale *
(properties.descent || bbox[1]));
if (typoDescent > 0 && properties.descent > 0 && bbox[1] < 0) {
typoDescent = -typoDescent; // fixing incorrect descent
}
var winAscent = override.yMax || typoAscent;
var winDescent = -override.yMin || -typoDescent;
// if there is a units per em value but no other override
// then scale the calculated ascent
if (unitsPerEm != PDF_GLYPH_SPACE_UNITS &&
'undefined' == typeof(override.ascent)) {
// if the font units differ to the PDF glyph space units
// then scale up the values
typoAscent = Math.round(typoAscent * unitsPerEm / PDF_GLYPH_SPACE_UNITS);
typoDescent = Math.round(typoDescent * unitsPerEm /
PDF_GLYPH_SPACE_UNITS);
winAscent = typoAscent;
winDescent = -typoDescent;
}
return '\x00\x03' + // version
'\x02\x24' + // xAvgCharWidth
'\x01\xF4' + // usWeightClass
@ -5479,6 +5479,7 @@ var CFFParser = (function CFFParserClosure() {
// adjusting ascent/descent
properties.ascent = fontBBox[3];
properties.descent = fontBBox[1];
properties.ascentScaled = true;
}
var charset, encoding;