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2002-09-25 David Turner <david@freetype.org> 

* src/autohint/ahtypes.h: disabling metrics hinting in the auto-hinter.
        this produces much better anti-aliased text

2002-09-25  Anthony Fok  <anthony@thizlinux.com>

        * src/sfnt/ttcmap0.c: added support for opens___.ttf (it contains
        a charmap that uses offset=0xFFFFU instead of 0x0000 to indicate a
        missing glyph)
This commit is contained in:
David Turner 2002-09-24 23:39:58 +00:00
parent 065b261496
commit cdc82b4a8a
3 changed files with 44 additions and 5 deletions
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11
ChangeLog
View File

@ -1,3 +1,14 @@
2002-09-25 David Turner <david@freetype.org>
* src/autohint/ahtypes.h: disabling metrics hinting in the auto-hinter.
this produces much better anti-aliased text
2002-09-25 Anthony Fok <anthony@thizlinux.com>
* src/sfnt/ttcmap0.c: added support for opens___.ttf (it contains
a charmap that uses offset=0xFFFFU instead of 0x0000 to indicate a
missing glyph)
2002-09-21 Wolfgang Domröse <porthos.domroese@harz.de>
* src/truetype/ttdriver.c (Load_Glyph): Fourth parameter must be

2
src/autohint/ahtypes.h
View File

@ -92,7 +92,7 @@ FT_BEGIN_HEADER
/* no reason to do this (at least for non-CJK scripts), except for */
/* experimentation. */
/* */
#define AH_HINT_METRICS
#undef AH_HINT_METRICS
/*************************************************************************/

36
src/sfnt/ttcmap0.c
View File

@ -579,6 +579,12 @@
/* Otherwise, a glyph index is taken from the glyph ids sub-array for */
/* the segment, and the value of `idDelta' is added to it. */
/* */
/* */
/* Finally, note that certain fonts contain invalid charmaps that */
/* contain end=0xFFFF, start=0xFFFF, delta=0x0001, offset=0xFFFF at the */
/* of their charmaps (e.g. opens___.ttf which comes with OpenOffice.org) */
/* we need special code to deal with them correctly... */
/* */
#ifdef TT_CONFIG_CMAP_FORMAT_4
@ -680,7 +686,7 @@
FT_INVALID_DATA;
}
if ( offset )
if ( offset && offset != 0xFFFFU )
{
p += offset; /* start of glyph id array */
@ -692,10 +698,10 @@
/* check glyph indices within the segment range */
if ( valid->level >= FT_VALIDATE_TIGHT )
{
FT_UInt idx;
FT_UInt i, idx;
for ( ; start < end; )
for ( i = start; i < end; i++ )
{
idx = FT_NEXT_USHORT( p );
if ( idx != 0 )
@ -708,6 +714,16 @@
}
}
}
else if ( offset == 0xFFFFU )
{
/* Some fonts (erroneously?) use a range offset of 0xFFFF */
/* to mean missing glyph in cmap table */
/* */
if ( valid->level >= FT_VALIDATE_PARANOID ||
n != num_segs - 1 ||
!( start == 0xFFFFU && end == 0xFFFFU && delta == 0x1U ) )
FT_INVALID_DATA;
}
last = end;
}
@ -769,6 +785,9 @@
p += num_segs2;
offset = TT_PEEK_USHORT( p );
if ( offset == 0xFFFFU )
goto Exit;
if ( offset != 0 )
{
p += offset + 2 * ( idx - start );
@ -813,6 +832,9 @@
p += num_segs2;
offset = TT_PEEK_USHORT( p );
if ( offset == 0xFFFFU )
goto Exit;
if ( offset != 0 )
{
p += offset + 2 * ( idx - start );
@ -879,7 +901,7 @@
p += num_segs2;
offset = TT_PEEK_USHORT( p );
if ( offset != 0 )
if ( offset != 0 && offset != 0xFFFFU )
{
/* parse the glyph ids array for non-0 index */
p += offset + ( code - start ) * 2;
@ -895,6 +917,12 @@
code++;
}
}
else if ( offset == 0xFFFFU )
{
/* an offset of 0xFFFF means an empty glyph in certain fonts !! */
code = end;
break;
}
else
gindex = (FT_UInt)( code + delta ) & 0xFFFFU;