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[truetype] Improve handling of broken sbit advance widths. 

* src/truetype/ttgload.c (TT_Load_Glyph): Use the glyph's (scaled)
`linearHoriAdvance' if the sbit's `horiAdvance' value is zero.

Cf. font `Fixedsys Excelsior' v3.01 (FSEX300.ttf), glyph A, 16ppem.
This commit is contained in:
Werner Lemberg 2013-06-10 14:59:21 +02:00
parent a25ecfddba
commit 5e094c6fb2
2 changed files with 16 additions and 0 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2013-06-10 Werner Lemberg <wl@gnu.org>
[truetype] Improve handling of broken sbit advance widths.
* src/truetype/ttgload.c (TT_Load_Glyph): Use the glyph's (scaled)
`linearHoriAdvance' if the sbit's `horiAdvance' value is zero.
Cf. font `Fixedsys Excelsior' v3.01 (FSEX300.ttf), glyph A, 16ppem.
2013-06-10 Werner Lemberg <wl@gnu.org>
[sfnt] Improve embedded bitmap tracing.

7
src/truetype/ttgload.c
View File

@ -2224,6 +2224,13 @@
glyph->linearHoriAdvance = loader.linear;
glyph->linearVertAdvance = loader.top_bearing + loader.bbox.yMax -
loader.vadvance;
/* sanity check: if `horiAdvance' in the sbit metric */
/* structure isn't set, use `linearHoriAdvance' */
if ( !glyph->metrics.horiAdvance && glyph->linearHoriAdvance )
glyph->metrics.horiAdvance =
FT_MulFix( glyph->linearHoriAdvance,
size->root.metrics.x_scale );
}
return FT_Err_Ok;