* src/autofit/aflatin.c (af_glyph_hints_apply_vertical_separation_adjustments)
Fix bug causing incorrect contour height calculation. Change centering
formula to be consistent with the one in af_latin_align_tildes.
* src/autofit/afadjust.c (af_glyph_hints_apply_vertical_separation_adjustments)
improve code formatting, remove redundant trace calls,
fix bug causing vertical separation to fail for some small sizes.
(af_latin_hints_apply) make numbering of trace calls more logical.
If HarfBuzz is enabled, the reverse character map generation now considers
GSUB entries when looking for glyphs that correspond to a code point.
* src/autofit/afadjust.c (af_all_glyph_variants_helper,
af_all_glyph_variants) [FT_CONFIG_OPTION_USE_HARFBUZZ]: New functions.
(af_reverse_character_map_new) [FT_CONFIG_OPTION_USE_HARFBUZZ]: Call new
code.
* src/autofit/afadjust.c (af_glyph_hints_apply_vertical_separation_adjustments)
improve code formatting, remove redundant trace calls,
fix bug causing vertical separation to fail for some small sizes.
(af_latin_hints_apply) make numbering of trace calls more logical.
* src/bdf/bdflib.c (bdf_parse_start_): Reject fonts with initial
COMMENTs.
(bdf_parse_properties_): Skip COMMENTs so that...
(bdf_add_property_): Do not make exception for COMMENT.
(bdf_parse_glyphs_, bdf_add_comments): Updated.
* src/bdf/bdflib.c (bdf_parse_start_, bdf_add_property_): Delay handling
of the default char until...
* src/bdf/bdfdrivr.c (BDF_Face_Init): ... handles all other properties.
* src/bdf/bdf.h (bdf_font_t): Remove `monowidth`.
* src/bdf/bdflib.c (bdf_parse_start_, bdf_add_property_): Delay handling
of the font spacing until...
* src/bdf/bdfdrivr.c (BDF_Face_Init): ... handles all other properties.
* src/bdf/bdflib.c (bdf_parse_start_, bdf_add_property_): Delay handling
of the font ascent and descent until...
* src/bdf/bdfdrivr.c (BDF_Face_Init): ... handles all other properties.
Instead of cumbersome field list mamangement, we will tokenize input
using custom `bdf_strtok_`.
* src/bdf/bdflib.c (bdf_list_t_, bdf_list_init_, bdf_list_ensure_,
bdf_list_shift_, bdf_list_join_, bdf_list_split_,
bdf_set_default_spacing_): Removed.
(bdf_strtok_): New function which NUL-terminates the first token at
the delimiter position and returns the next token that follows
consequtive delimiters.
(bdf_parse_*_, bdf_load_font): Updated.
* docs/CHANGES: Claim overall 75% performance improvement.
* src/bdf/bdf.h (bdf_options_t): Removed.
(BDF_KEEP_COMMENTS, BDF_KEEP_UNENCODED, BDF_CORRECT_METRICS): Updated
to avoid collisions with the other parsing flags.
* src/bdf/bdfdrivr.c (BDF_Face_Init): Use default flags explicitly.
* src/bdf/bdflib.c (bdf_load_font): Use flags as an argument to
initialize the parser.
(bdf_set_fedault_spacing_): Default to BDF_PROPORTIONAL explicitly.
(bdf_parse_*_): Updated.
A dedicated parser of bitmap data with minimal error checking and
no string comparisons helps to improve performance.
* src/bdf/bdflib.c (bdf_parse_bitmap_): New dedicated bitmap parser.
(bdf_parse_glyphs_): Pass to `bdf_parse_bitmap_` on BITMAP.
This resolves build problems with newer libPNG versions by switching
to using IMPORTED CMake targets for common libraries where provided.
To do this the required CMake version is raised to version 3.12.
Doing this seems justified as using IMPORTED targets is a cleaner
and more powerful solution that can leverage advanced and CMake-specific
features that may be utilized by the referred dependencies' CMake modules.
Resolves#1311.
After the previous commit, cff_glyph_load is no longer called
without first checking for valid size and glyph objects in
FT_Glyph_Load and these checks can be removed downstream.
* src/cff/cffdrivr.c (cff_glyph_load): Remove `size` and `glyph` checks.
* src/cff/cffgload.c (cff_slot_load): Ditto.
Otherwise, let TT_Get_Advances fall back on cff_load_glyph to do
slow advances. This avoids unchecked access to cff_load_glyph and
this is how tt_get_advances is implemented.
This assignmets used to be done prematurely before errors were checked
and outlines were actually loaded. Delaying the assignment provides
certain protection against careless usage of malformed input that
should now remain FT_GLYPH_FORMAT_NONE.
* src/cff/cffgload.c (cff_slot_load): Ditto.
* src/cid/cidgload.c (cid_slot_load_glyph): Ditto.
* src/pfr/pfrobjs.c (pfr_slot_load): Ditto.
* src/truetype/ttgload.c (TT_Load_Glyph): Ditto.
* src/type1/t1gload.c (T1_Load_Glyph): Ditto.
