Commit Graph

244 Commits

Author SHA1 Message Date
Behdad Esfahbod 9eda74c92c [cbdt] Move some more code around 2016-12-04 19:12:52 -08:00
Behdad Esfahbod c27d6fcf8d [cbdt] Last of sanitization fixes
Should be all good now..
2016-12-02 22:43:05 -08:00
Behdad Esfahbod d495fc5e38 [cbdt] Clean up some more
Almost there..
2016-12-02 21:52:33 -08:00
Behdad Esfahbod ce09e90e15 [cbdt] More sanitize work 2016-12-02 20:12:57 -08:00
Behdad Esfahbod 4b58c9e326 [cbdt] Start fixing sanitization (or lack thereof) 2016-12-02 19:25:54 -08:00
Behdad Esfahbod efca7bf97f Rename 'ebdt' to 'cbdt' since we only support the PNG format 2016-12-02 15:11:37 -08:00
Seigo Nonaka 831852594b Introduce get_extent support for color bitmap font. (#351)
hb_font_get_glyph_extents now works for color bitmap fonts.
Currently only font having index format 1 and image format 17
is supported.
2016-12-02 17:03:50 -06:00
Behdad Esfahbod 63635c763d [hb-ot-font] Use ascent+descent as fallback vertical advance 2016-10-26 18:01:24 +02:00
Behdad Esfahbod b3b0816d5f Fix vertical font metrics
Ouch!
2016-10-26 18:01:20 +02:00
Behdad Esfahbod 34f9aa582c Implement symbol cmap in ft and ot fonts
Fixes https://github.com/behdad/harfbuzz/issues/236
Fixes https://bugs.chromium.org/p/chromium/issues/detail?id=627953
2016-07-20 02:35:54 -07:00
Behdad Esfahbod 9879fc1db3 [ot-font] Remove unused 'post' table include for now
To make a release...
2016-05-02 10:29:12 +02:00
Behdad Esfahbod f00ab2a33a [hb-ot-font] Make 'glyf' table loading lazy
Apparently some clients have reference-table callbacks that copy the table.
As such, avoid loading 'glyf' table which is only needed if fallback positioning
happens.
2016-05-02 10:24:00 +02:00
Behdad Esfahbod 587d46227a [ot-font] Start implementing 'post' table, for accessing glyph names 2016-04-30 19:20:56 +02:00
Behdad Esfahbod 23335deaad [ot-font] Accelerate cmap format4 get_glyph 2016-02-24 20:27:13 +09:00
Behdad Esfahbod e0f16a715b [ot-font] Towards accelerating get_glyph() 2016-02-24 19:52:36 +09:00
Behdad Esfahbod 5473ebfb84 [ot-font] Remove level of indirection in get_glyph_variant 2016-02-24 19:32:43 +09:00
Behdad Esfahbod 8b5bc141cd Add get_nominal_glyph() and get_variation_glyph() instead of get_glyph()
New API:
- hb_font_get_nominal_glyph_func_t
- hb_font_get_variation_glyph_func_t
- hb_font_funcs_set_nominal_glyph_func()
- hb_font_funcs_set_variation_glyph_func()
- hb_font_get_nominal_glyph()
- hb_font_get_variation_glyph()

Deprecated API:
- hb_font_get_glyph_func_t
- hb_font_funcs_set_glyph_func()

Clients that implement their own font-funcs are encouraged to replace
their get_glyph() implementation with a get_nominal_glyph() and
get_variation_glyph() pair.  The variation version can assume that
variation_selector argument is not zero.
2016-02-24 19:05:23 +09:00
Behdad Esfahbod 3ad16048fd [ot-font] Respect OS/2 fsSelection USE_TYPO_METRICS bit 2015-12-10 16:37:49 +01:00
Simon Cozens 6f2e6de1fa Get font ascender and descender metrics from OS/2 table. 2015-11-27 16:03:54 -05:00
Behdad Esfahbod 35d18585fc Fix a few docs blocks 2015-11-26 19:30:37 -05:00
Behdad Esfahbod 6c48ec830f [ot] Remove font funcs that do nothing 2015-11-04 20:47:42 -08:00
Behdad Esfahbod 75ea2daa1d [ot] Port ot font funcs to allocated object 2015-11-04 20:43:59 -08:00
Behdad Esfahbod df698f3299 [ot-font] Fix hmtx table length checking, *again*
Exactly the same problem that I fixed in
63ef0b41dc

I rewrote the table checking yesterday in
67f8821fb2
and introduced the exact same issue again. :(
Good thing we have ongoing fuzzing going now.  Was discovered
immediately by libFuzzer.  Thanks kcc!

https://github.com/behdad/harfbuzz/issues/139#issuecomment-153449473
Fixes https://github.com/behdad/harfbuzz/issues/156
2015-11-03 12:15:12 -08:00
Behdad Esfahbod 67f8821fb2 [ot] Make bad-hmtx handling match FreeType
Also route fuzzing-related tests through hb-ot-font, to reduce dependency
on FreeType behavior for badly-broken fonts.  Fixes failing test with
FreeType master.
2015-11-02 15:37:29 -08:00
Behdad Esfahbod 63ef0b41dc [ot-font] Fix hmtx wrong table length check
Discovered by libFuzzer.  Ouch!

https://github.com/behdad/harfbuzz/issues/139#issuecomment-148289957
2015-10-15 12:54:28 -03:00
Behdad Esfahbod ed13e2ce50 [ot-font] Fix leak
https://github.com/behdad/harfbuzz/issues/139#issuecomment-147616887
2015-10-13 10:32:56 -03:00
Behdad Esfahbod 3224a594dc Minor 2015-10-07 17:33:02 -04:00
Behdad Esfahbod 2cee5b68a0 [ot-font] Fix short-offset calculation 2015-08-24 13:45:12 +01:00
Behdad Esfahbod b50fcfa829 [ot-font] Implement glyph_extents() for TrueType fonts
This brings ot-fonts into almost-complete shape and mostly in par with
ft font.
2015-08-23 14:42:20 +01:00
Sascha Brawer 01c3a88543 Fix "Since:" tags
Based on data from http://upstream-tracker.org/versions/harfbuzz.html
Resolves #103
2015-06-01 13:25:27 +02:00
Behdad Esfahbod f1b44303df Fix unary minus operator applied to unsigned int
Applying unary minus operator to unsigned int causes the following
warning on MSVS:

  warning C4146: unary minus operator applied to unsigned type, result still unsigned

Based on patch from Koji Ishi.

Fixes https://github.com/behdad/harfbuzz/pull/110
2015-05-21 14:00:15 -07:00
Behdad Esfahbod dba482fc44 [ot-font] Accept MS Symbol cmap if nothing else found 2015-04-17 13:08:08 -07:00
Behdad Esfahbod b931e0b0ce Fix warnings
Part of https://github.com/behdad/harfbuzz/pull/68
2015-04-08 14:43:33 -07:00
Behdad Esfahbod 156852991e [ot-font] Add hb_ot_face_cmap_accelerator_t 2014-09-25 17:45:49 +03:00
Behdad Esfahbod d088ccaf11 [ot-font] Minor 2014-09-25 17:26:56 +03:00
Behdad Esfahbod d7c160a153 [ot-font] Handle missing vertical metrics tables 2014-09-25 17:15:35 +03:00
Behdad Esfahbod be1cca2702 [ot-font] Add metrics_accel_t 2014-09-25 16:53:24 +03:00
Behdad Esfahbod d41b809e9d [ot-font] Start adding vertical support 2014-09-25 13:22:01 +03:00
Behdad Esfahbod 8a93195021 [ot] Prefer Windows platform cmap tables / accept all Unicode encodingIDs
Some fonts on the Mac ship with (0,1).
2014-08-22 12:06:57 -04:00
Behdad Esfahbod 23afcff1d1 [ot-font] Implement Unicode variation selectors 2014-06-27 17:22:36 -04:00
Behdad Esfahbod 0d75793fae [ot] Implement cmap subtable format 12 2014-05-12 17:51:15 -04:00
Behdad Esfahbod 3608a6847e [ot] Hook up cmap table to hb_ot_font_funcs() 2014-05-12 13:46:29 -04:00
Behdad Esfahbod 41ca1fbebf [ot] Start implementing cmap table 2014-05-09 15:35:56 -04:00
Behdad Esfahbod 903648437c Start fleshing out builtin font functions 2014-03-24 15:19:15 -07:00