hinting and a memory leak with some large Asian CFF fonts
* src/base/ftobjs.c (FT_Done_Library): remove a subtle memory leak
which happens when FT_Done_Library is called with opened CFF_Faces in
it. We need to close all faces before destroying the modules, or else
some bad things (memory leaks) may happen.
FT_RoundFix but FT_PIX_ROUND.
(psh_blues_snap_stem): Don't use blue_shift but blue_threshold.
*src/pshinter/pshalgo.c (PSH_STRONG_THRESHOLD_MAXIMUM): New macro.
(psh_glyph_find_string_points): Use PSH_STRONG_THRESHOLD_MAXIMUM.
(psh_glyph_find_blue_points): New function. Needed for fonts like
p052003l.pfb (URW Palladio L Roman) which have flex curves at the
base line within blue zones, but the flex curves aren't covered by
hints.
(ps_hints_apply): Use psh_glyph_find_blue_points.
the accepted shift for strong points in fractional pixels (which
is a heuristic value).
(psh_glyph_find_strong_points): Compute threshold for
psh_hint_table_find_strong_points.
(psh_hint_table_find_strong_point): Add parameter to pass threshold.
computation of glyph_index.
(FNT_Size_Set_Pixels): To find a strike, first check pixel_height
only, then try to find a better hit by comparing pixel_width also.
Without this fix it isn't possible to access all strikes.
Also compute metrics.max_advance to be in sync with other bitmap
drivers.
* src/base/ftobjs.c (FT_Set_Char_Size): Remove redundant code.
(FT_Set_Pixel_Size): Assign value to `metrics' after validation of
arguments.
Synchronize computation of height and width for bitmap strikes. The
`width' field in the FT_Bitmap_Size structure is now only useful to
enumerate different strikes. The `max_advance' field of the
FT_Size_Metrics structure should be used to get the (maximum) width
of a strike.
* src/bdf/bdfdrivr.c (BDF_Face_Init): Don't use AVERAGE_WIDTH for
computing `available_sizes->width' but make it always equal to
`available_sizes->height'.
* src/pcf/pcfread.c (pcf_load_font): Don't use RESOLUTION_X for
computing `available_sizes->width' but make it always equal to
`available_sizes->height'.
* src/truetype/ttdriver.c (Set_Pixel_Sizes): Pass only single
argument to function.
* src/psnames/psmodule.c (ps_unicode_value): Handle `.' after
`uniXXXX' and `uXXXX[X[X]]'.
* src/bdf/bdfdrivr.c: s/FT_Err_/BDF_Err/.
* src/cache/ftccache.c, src/cache/ftcsbits.c, src/cache/ftlru.c:
s/FT_Err_/FTC_Err_/.
* src/cff/cffcmap.c: s/FT_Err_/CFF_Err_/.
* src/pcf/pcfdrivr.c: s/FT_Err_/PCF_Err_/.
* src/psaux/t1cmap.c: Include psauxerr.h.
s/FT_Err_/PSaux_Err_/.
* src/pshinter/pshnterr.h: New file.
* src/pshinter/rules.mk: Updated.
* src/pshinter/pshalgo.c, src/pshinter/pshrec.c: Include pshnterr.h.
s/FT_Err_/PSH_Err_/.
* src/pfr/pfrdrivr.c, src/pfr/pfrobjs.c, src/pfr/pfrsbit.c:
s/FT_Err_/PFR_Err_/.
* src/sfnt/sfdriver.c, src/sfnt/sfobjs.c, src/sfnt/ttcmap0.c,
src/sfnt/ttload.c: s/FT_Err_/SFNT_Err_/.
* src/truetype/ttgload.c: s/FT_Err_/TT_Err_/.
* src/gzip/ftgzip.c: Load FT_MODULE_ERRORS_H and define
FT_ERR_PREFIX and FT_ERR_BASE.
s/FT_Err_/Gzip_Err_/.
include/freetype/internal/ftobjs.h,
include/freetype/internal/psaux.h, src/cid/cidgload.c,
src/psaux/psobjs.c, src/psaux/t1decode.c, src/psaux/psobjs.h,
src/pshinter/pshrec.c, src/pshinter/pshalgo.c,
src/psnames/psmodule.c, src/raster/ftraster.c, src/sfnt/sfobjs.c,
src/smooth/ftgrays.c, src/smooth/ftsmooth.c, src/truetype/ttobjs.c,
src/truetype/ttdriver.c, src/truetype/ttgload.c, src/type1/t1afm.c,
src/type1/t1gload.c, src/type1/t1gload.h, src/type1/t1load.c,
src/type1/t1objs.c, src/type42/t42parse.c, src/type42/t42parse.h:
Many casts and slight argument type changes to make it work with
a 16bit compiler.
David Turner