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better handling of serif segments in the Latin auto-fitter, gets rid of 

broken "9" in Arial 9pt/96dpi
This commit is contained in:
David Turner 2007-02-12 22:33:48 +00:00
parent c6a14086d2
commit a6bdb667d9
2 changed files with 32 additions and 7 deletions
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21
ChangeLog
View File

@ -8,7 +8,25 @@
2007-02-12 David Turner <david@freetype.org>
Simplify projection and dual-projection code interface.
* src/autofit/aflatin.c: slight optimization of the segment linker
and better handling of serif segments to get rid of broken "9" in
Arial 9 pts (96dpi)
* src/autofit/afloader.c: improve spacing adjustments for the
non-light auto-hinted modes. Gets rid of "inter-letter spacing
is too wide"
* src/truetype/ttinterp.h, src/truetype/ttinterp.c: simplify
projection and dual-projection code interface
* include/freetype/internal/ftmemory.h, src/base/ftutils.c,
src/bfd/bfddrivr.c, src/bdf/bdflib.c, src/pcf/pcfread.c,
src/cff/cffdrivr.c, src/cff/cffload.c, src/cff/cffobjs.c,
src/sfnt/sfdriver.c, src/type1/t1driver.c, src/type42/t42drivr.c:
introduce ft_mem_strdup, ft_mem_dup, ft_mem_strcpyn and the
corresponding macros, and modify code to use them. This is to
get rid of various uses of strcpy and other "evil" functions,
as well as simplify a few things
* src/truetype/ttinterp.h (TT_Project_Func): Use `FT_Pos', not
FT_Vector' as argument type.
@ -44,6 +62,7 @@
src/sfnt/sfdriver.c (sfnt_get_glyph_name), src/type1/t1driver.c
(t1_get_glyph_name), src/type42/t42drivr.c (t42_get_glyph_name,
t42_get_name_index): Use new functions and simplify code.
>>>>>>> 1.1522
* builds/mac/ftmac.c (FT_FSPathMakeSpec): Don't use FT_MIN.

16
src/autofit/aflatin.c
View File

@ -923,11 +923,11 @@
{
/* the fake segments are introduced to hint the metrics -- */
/* we must never link them to anything */
if ( seg1->first == seg1->last || seg1->dir != major_dir )
if ( seg1->first == seg1->last )
continue;
for ( seg2 = segments; seg2 < segment_limit; seg2++ )
if ( seg2 != seg1 && seg1->dir + seg2->dir == 0 )
for ( seg2 = seg1+1; seg2 < segment_limit; seg2++ )
if ( seg1->dir + seg2->dir == 0 )
{
FT_Pos pos1 = seg1->pos;
FT_Pos pos2 = seg2->pos;
@ -935,7 +935,7 @@
if ( dist < 0 )
continue;
dist = -dist;
{
FT_Pos min = seg1->min_coord;
@ -1020,7 +1020,7 @@
* corresponding threshold in font units.
*/
if ( dim == AF_DIMENSION_HORZ )
segment_length_threshold = FT_DivFix( 96, hints->y_scale );
segment_length_threshold = FT_DivFix( 64, hints->y_scale );
else
segment_length_threshold = 0;
@ -1057,6 +1057,12 @@
if ( seg->height < segment_length_threshold )
continue;
/* a special case for serif edges, if they're smaller than 1.5
* pixels, we ignore them
*/
if ( seg->serif && 2*seg->height < 3*segment_length_threshold )
continue;
/* look for an edge corresponding to the segment */
for ( ee = 0; ee < axis->num_edges; ee++ )
{