Sakurai/pdf.js
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Fixing the maxAdvanceWidth and the amount of the missing sidebearing

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notmasteryet 2011-07-31 22:56:41 -05:00
parent 710c3da3e3
commit 9bcf2d8b7c
1 changed files with 8 additions and 1 deletions
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9
fonts.js
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@ -1001,7 +1001,8 @@ var Font = (function Font() {
var numOfHMetrics = int16(font.getBytes(2));
var numOfSidebearings = numGlyphs - numOfHMetrics;
var numMissing = numOfSidebearings - (hmtx.length - numOfHMetrics * 4);
var numMissing = numOfSidebearings -
((hmtx.length - numOfHMetrics * 4) >> 1);
if (numMissing > 0) {
font.pos = (font.start ? font.start : 0) + hmtx.offset;
var metrics = "";
@ -1012,6 +1013,12 @@ var Font = (function Font() {
hmtx.data = stringToArray(metrics);
}
// Sanitizer reduces the glyph advanceWidth to the maxAdvanceWidth
// Sometimes it's 0. That needs to be fixed
if (hhea.data[10] == 0 && hhea.data[11] == 0) {
hhea.data[10] = 0xFF;
hhea.data[11] = 0xFF;
}
// Replace the old CMAP table with a shiny new one
if (properties.type == 'CIDFontType2') {