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* src/base/ftobjs.c (ft_glyphslot_reset_bimap): Further tweak.

This commit is contained in:
Alexei Podtelezhnikov 2018-09-21 20:34:58 -04:00
parent abd997aa7c
commit f26d57753f
2 changed files with 22 additions and 12 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2018-09-20 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/base/ftobjs.c (ft_glyphslot_reset_bimap): Further tweak.
2018-09-21 Ben Wagner <bungeman@google.com>
Improve auto-hinter handling of bitmap fonts (#54681).

30
src/base/ftobjs.c
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@ -395,15 +395,18 @@
/* undocumented but confirmed: bbox values get rounded; */
/* for narrow glyphs bbox is extended to one pixel first */
if ( pbox.xMax - pbox.xMin <= 1 )
switch ( pbox.xMax - pbox.xMin )
{
if ( pbox.xMax - pbox.xMin == 0 )
case 1:
pbox.xMax -= 1;
cbox.xMax += 64;
/* fall through */
case 0:
if ( cbox.xMax - cbox.xMin < 63 )
{
cbox.xMin = ( cbox.xMin + cbox.xMax ) / 2 - 32;
cbox.xMax = cbox.xMin + 64;
cbox.xMin = ( cbox.xMin + cbox.xMax ) / 2 - 31;
cbox.xMax = cbox.xMin + 63;
}
else if ( cbox.xMax - cbox.xMin < 0 )
cbox.xMin = cbox.xMax = ( cbox.xMin + cbox.xMax ) / 2;
}
/* we do asymmetric rounding so that the center */
@ -414,15 +417,18 @@
/* y */
if ( pbox.yMax - pbox.yMin <= 1 )
switch ( pbox.yMax - pbox.yMin )
{
if ( pbox.yMax - pbox.yMin == 0 )
case 1:
pbox.yMax -= 1;
cbox.yMax += 64;
/* fall through */
case 0:
if ( cbox.yMax - cbox.yMin < 63 )
{
cbox.yMin = ( cbox.yMin + cbox.yMax ) / 2 - 32;
cbox.yMax = cbox.yMin + 64;
cbox.yMin = ( cbox.yMin + cbox.yMax ) / 2 - 31;
cbox.yMax = cbox.yMin + 63;
}
else if ( cbox.yMax - cbox.yMin < 0 )
cbox.yMin = cbox.yMax = ( cbox.yMin + cbox.yMax ) / 2;
}
pbox.yMin += ( cbox.yMin + 31 ) >> 6;