Commit Graph

1732 Commits

Author SHA1 Message Date
Behdad Esfahbod 9da554504e Add hb_shape_list_shapers() 2011-08-05 19:59:02 -04:00
Behdad Esfahbod d7bf473ef2 Minor 2011-08-05 19:59:02 -04:00
Behdad Esfahbod c62a8f10f3 Free all static memory upon exit 2011-08-05 19:59:02 -04:00
Behdad Esfahbod c4d63ef744 Fix env parsing code
Also changed the separator to comma instead of colon.
2011-08-05 19:59:02 -04:00
Behdad Esfahbod 3931837beb Change hb_shape() API back to what it was, add hb_shape_full()
I disliked changing hb_shape() API, and disliked the fact that it was
returning a bool now.  So, reverted.  Added new API for the extra
functionality.
2011-08-05 19:59:02 -04:00
Behdad Esfahbod 3ca6c4ecc2 Change hb_shape() API back to what it was, add hb_shape_full()
I disliked changing hb_shape() API, and disliked the fact that it was
returning a bool now.  So, reverted.  Added new API for the extra
functionality.
2011-08-05 17:22:19 -04:00
Behdad Esfahbod 02aeca985b [API] Changes to main shape API
hb_shape() now accepts a shaper_options and a shaper_list argument.
Both can be set to NULL to emulate previous API.  And in most situations
they are expected to be set to NULL.

hb_shape() also returns a boolean for now.  If shaper_list is NULL, the
return value can be ignored.

shaper_options is ignored for now, but otherwise it should be a
NULL-terminated list of strings.

shaper_list is a NULL-terminated list of strings.  Currently recognized
strings are "ot" for native OpenType Layout implementation, "uniscribe"
for the Uniscribe backend, and "fallback" for the non-complex backend
(that will be implemented shortly).  The fallback backend never fails.

The env var HB_SHAPER_LIST is also parsed and honored.  It's a
colon-separated list of shaper names.  The fallback shaper is invoked if
none of the env-listed shapers succeed.

New API hb_buffer_guess_properties() added.
2011-08-04 22:38:09 -04:00
Behdad Esfahbod 57692adf12 Make test.cc do something more useful
Hardcoded to the uniscribe backend for now.  Will fix soon.
2011-08-04 20:49:16 -04:00
Behdad Esfahbod c605bbbb6d Remove C++ guards from source files
Where causing issues for people with MSVC.
2011-08-04 20:00:53 -04:00
Behdad Esfahbod 8336186a52 Zero map objects 2011-08-04 19:49:05 -04:00
Behdad Esfahbod c747f509bc More out-of-tree build fixes 2011-08-04 01:51:30 -04:00
Behdad Esfahbod 20dde61016 Minor 2011-08-04 01:07:33 -04:00
Behdad Esfahbod 44b4f50d05 Fix typo 2011-08-04 00:52:20 -04:00
Behdad Esfahbod 0fbb2dc831 Add draft experimental Uniscribe backend
Not complete yet, font selection doesn't work.  But hey it shapes!

This is not supposed to be a production backend, more like a testing
backend.
2011-08-03 19:55:04 -04:00
Behdad Esfahbod e62df43649 Add internal hb_buffer_t::get_scratch_buffer() 2011-08-03 17:38:54 -04:00
Behdad Esfahbod bf8c57ba74 [API] Add hb_face_get_blob()
Need to think more about it.
2011-08-03 17:38:04 -04:00
Behdad Esfahbod 2118fdb9f5 Fix fallback shaping
Broke it a few commits ago.
2011-08-02 14:06:51 -04:00
Behdad Esfahbod f60271c0c2 Add mingw32 support
With these changes, on Ubuntu I can do:

./configure --host=i586-mingw32msvc  && make
2011-08-02 10:00:55 -04:00
Behdad Esfahbod f5414cf0a2 Use missing script for calling ragel 2011-08-01 16:34:16 -04:00
Behdad Esfahbod a91c58bf98 [Indic] Disable CJCT-disabling logic
Read comment.
2011-08-01 16:30:11 -04:00
Behdad Esfahbod 5e72071062 [Indic] Stop looking for base upon seeing joiners
Not sure where this is documented, but I remember this being the desired
behavior.

test-shape-complex failures are down from 48 to 46.  Meh.
2011-07-31 17:52:44 -04:00
Behdad Esfahbod 281683995a Cosmetic 2011-07-31 16:00:35 -04:00
Behdad Esfahbod 6b37bc8084 [Indic] Fix ZWJ/ZWNJ application
Not quite working just yet.  False alarm re 10 failures.  It was
crashing.  Ouch!  Back to 48 failures.
2011-07-31 15:57:00 -04:00
Behdad Esfahbod e7be057024 [Indic] Add Final Reordering rules into comments
Not applied yet.
2011-07-31 15:22:46 -04:00
Behdad Esfahbod cfd4382ec1 [Indic] Handle Reph when determining base consonant 2011-07-31 15:08:40 -04:00
Behdad Esfahbod 97158392a5 [Indic] Ra is a consonant too 2011-07-31 15:01:28 -04:00
Behdad Esfahbod 0d8f8a177c [Indic] Fix reph inhibition logic 2011-07-31 14:57:59 -04:00
Behdad Esfahbod 9da0487cd4 [Indic] Support ZWJ/ZWNJ
Brings test-shape-complex failures down from 52 to 10!

I hereby declare harfbuzz-ng supporting Indic!
2011-07-31 13:46:44 -04:00
Behdad Esfahbod 9ee27a928a [Indic] Suppress reph formation upon joiners 2011-07-31 11:10:14 -04:00
Behdad Esfahbod 8354e004e5 Un-Ra U+09F1. According to the test suite this is correct.
But I'm not sure...  Down from 54 failures to 52.
2011-07-31 02:24:51 -04:00
Behdad Esfahbod ba7e85c104 Cosmetic 2011-07-30 21:11:53 -04:00
Behdad Esfahbod f5bc2725cb [Indic] For old-style Indic tables, move Halant around
In old-style Indic OT standards, the post-base Halants are moved after
their base.  Emulate that by moving first post-base Halant to
post-last-consonant.

Brings test-shape-complex failures down from 88 to 54.  Getting there!
2011-07-30 21:08:10 -04:00
Behdad Esfahbod c47a31fb47 [OT] Save chosen script tag 2011-07-30 20:57:01 -04:00
Behdad Esfahbod fd06bf5611 [Indic] Handle initial Ra+Halant in scripts that support Reph
Brings test-shape-complex failures down from 104 to 92.  Way to go!
2011-07-30 20:14:44 -04:00
Behdad Esfahbod ee58f3bc75 Minor 2011-07-30 19:15:53 -04:00
Behdad Esfahbod 352372ae5e [Indic] Categorize Ra in scripts that have Reph
Is the categorization correct?  I don't know.
2011-07-30 19:04:02 -04:00
Behdad Esfahbod 45d6f29f15 [Indic] Reorder matras
Number of failing shape-complex tests goes from 125 down to 94.

Next: Add Ra handling and it's fair to say we kinda support Indic :).
2011-07-30 14:44:30 -04:00
Behdad Esfahbod 911bf32aca Bug 39686 - Add '-no-undefined' to libharfbuzz LDFLAGS 2011-07-30 11:16:00 -04:00
Behdad Esfahbod 8f0b64fb69 Minor 2011-07-29 17:02:48 -04:00
Behdad Esfahbod 743807a3ce [Indic] Apply Indic features
Find the base consonant and apply basic Indic features accordingly.
Nothing complete, but does something for now.  Specifically:
no Ra handling right now, and no ZWJ/ZWNJ.

Number of failing shape-complex tests goes from 174 down to 125.

Next: reorder matras.
2011-07-29 16:46:09 -04:00
Behdad Esfahbod 9f9bcceca6 Register buffer vars in Indic shaper 2011-07-28 17:07:50 -04:00
Behdad Esfahbod be09bf6b79 Oops. This should have gone into the previous commit 2011-07-28 17:03:43 -04:00
Behdad Esfahbod b65c06025d Formalize buffer var allocations 2011-07-28 16:49:29 -04:00
Behdad Esfahbod a9ad3d3460 Move more code around
Buffer var allocation coming into shape
2011-07-28 15:42:18 -04:00
Behdad Esfahbod cc06c243d8 Streamline debugging infrastructure even more 2011-07-25 20:34:17 -04:00
Behdad Esfahbod 43ff203d8e Use variadic macros for debugging
Looks *so* much nicer!
2011-07-25 17:35:24 -04:00
Behdad Esfahbod decd4e3e16 Add sugar syntax for debug messages
Buffer debugging coming soon.
2011-07-25 16:47:02 -04:00
Behdad Esfahbod 3a81b1db89 Minor, fix leak from my previous refactorings 2011-07-25 16:30:32 -04:00
Behdad Esfahbod f4a579bc42 Add internal API for buffer var allocation 2011-07-25 16:26:05 -04:00
Behdad Esfahbod 651e8dd79e Start cleaning up buffer var allocation
I've messed up a lot of stuff recently, different parts of the
shaping process are stumbling on eachother's toes because
manually tracking what's in which buffer var is hard.  I'm
going to add some internal API to track those such that mistakes
are discovered as soon as they are introduced.
2011-07-25 14:54:08 -04:00
Behdad Esfahbod c86f932015 Move code around 2011-07-25 00:44:50 -04:00
Behdad Esfahbod 18c42850c9 Shrink space used for ligature ids
This frees 16bits in the glyph_info struct during the ot_layout process.
We can use the freed space in the shapers now.
2011-07-25 00:43:39 -04:00
Behdad Esfahbod d8787493c9 Minor 2011-07-25 00:36:01 -04:00
Behdad Esfahbod c311d85208 Keep Unicode props updated as we go so we avoid a scan later 2011-07-23 23:43:54 -04:00
Behdad Esfahbod 5389ff4dbc Implement the Unicode Canonical Composition algorithm
Fallback normalization is complete and working now!
2011-07-22 20:22:49 -04:00
Behdad Esfahbod dcdc51cdc0 Handle singleton decompositions 2011-07-22 17:14:46 -04:00
Behdad Esfahbod 34c22f8168 Implement Unicode Canonical Reordering Algorithm 2011-07-22 17:04:20 -04:00
Behdad Esfahbod 4ff0d2d9df Decomposition works now! 2011-07-22 16:15:32 -04:00
Behdad Esfahbod 468e9cb25c Move buffer methods into the object 2011-07-22 14:49:14 -04:00
Behdad Esfahbod 45412523dc More normalization kick 2011-07-22 11:07:05 -04:00
Behdad Esfahbod 63c0ef4a07 Fix decompose() implementations to work with non-starter non-composables
Add tests.
2011-07-21 20:58:42 -04:00
Behdad Esfahbod 5d90a342e3 Document normalization design 2011-07-21 15:25:01 -04:00
Behdad Esfahbod 02cdf743c2 Add prefer_decomposed() complex-shaper callback
This allows the Indic shaper to request decomposed characters.  This will
handle split matra for free.  Other shapers prefer precomposed
characters.
2011-07-21 12:23:12 -04:00
Behdad Esfahbod d6b9c6d200 More kicking 2011-07-21 12:16:45 -04:00
Behdad Esfahbod 192445aef2 Remove intermittent_glyph()
Lets not worry about performance for now...
2011-07-21 12:13:04 -04:00
Behdad Esfahbod d63adfc7d0 No need to handle variation-selectors seperately, they are GC=Mn 2011-07-21 11:48:57 -04:00
Behdad Esfahbod aa7264123a Only form clusters if we are reversing
This produces more accurate cluster mappings.  Cluster mappings are
minimal now.  Combining marks get their own cluster value most of
the time.
2011-07-21 11:34:59 -04:00
Behdad Esfahbod 5c6f5982d7 Towards normalization 2011-07-21 11:31:08 -04:00
Behdad Esfahbod cf7f43ec33 Remove stale comment 2011-07-21 01:12:26 -04:00
Behdad Esfahbod 54d1a0d2b2 Form clusters before ensuring native direciton
This is essential as ensure_native_direction uses cluster info that
is set by form_clusters().
2011-07-21 01:11:09 -04:00
Behdad Esfahbod 9111b21ef9 Add _hb_buffer_output_glyph() and _hb_buffer_skip_glyph() 2011-07-21 00:59:15 -04:00
Behdad Esfahbod 655586fe5e Towards normalization 2011-07-21 00:52:42 -04:00
Behdad Esfahbod 49741c8633 Include variation-selectors in cluster calculation 2011-07-21 00:35:37 -04:00
Behdad Esfahbod dd89d958c1 Fix cluster calculation for non-LTR text 2011-07-21 00:28:57 -04:00
Behdad Esfahbod 4a68684654 When forming clusters, participate all mark types 2011-07-21 00:14:01 -04:00
Behdad Esfahbod 5157e12a55 Rename HB_UNICODE_GENERAL_CATEGORY_COMBINING_MARK to HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK
Spacing_Mark is the current Unicode long-name for this property value.
The previous name was wrongly carried from glib.
2011-07-21 00:12:33 -04:00
Behdad Esfahbod 7b08b0a7f2 Minor 2011-07-20 23:59:07 -04:00
Behdad Esfahbod 498e1a9be6 [icu] Implement compose()/decompose() 2011-07-20 23:19:49 -04:00
Behdad Esfahbod ffd4a436f7 Add tests for compose()/decompose()
Adjust glib fallback implementation.

The tests are not hooked up for ICU yet.
2011-07-20 22:31:23 -04:00
Behdad Esfahbod fca0923b04 Minor 2011-07-20 22:16:13 -04:00
Behdad Esfahbod 26b6024962 [glib] Use g_unicode_script_to/from_iso15924() if available 2011-07-20 22:16:01 -04:00
Behdad Esfahbod 22fdc66712 [glib] Add compose() and decompose() implementations with fallback 2011-07-20 21:51:37 -04:00
Behdad Esfahbod a54a5505a3 Minor 2011-07-20 16:42:10 -04:00
Behdad Esfahbod 22989c5ffc Distribute hb-ot-shape-complex-indic-machine.rl 2011-07-12 11:54:58 -04:00
Behdad Esfahbod f6fd3780e1 Let shapers decide when to apply ccmp and locl
Instead of always applying those two features before the complex shaper,
let the complex shaper decide whether they should be applied first.

Also add stub for Indic's final_reordering().
2011-07-08 00:22:40 -04:00
Behdad Esfahbod c4641723fb [API] Add compose() and decompose() unicode funcs, rename other ones
Add compose() and decompose() unicode funcs.  These implement
pair-wise canonical composition/decomposition.

The glib/icu implementations are lacking for now.  We are adding
API for this to glib, but I cannot find any useful API in ICU.
May end of implementing these in-house.

Changed all unicode_funcs callback names to remove the "_get" part.
Eg, hb_unicode_get_script_func_t is now hb_unicode_script_func_t,
and hb_unicode_get_script() is hb_unicode_script() now.
2011-07-08 00:09:31 -04:00
Behdad Esfahbod d05dded167 More code generation through preprocessor 2011-07-07 23:43:47 -04:00
Behdad Esfahbod 891c4755ba Humm, undo some shuffling
In preparation for adding more advanced unicode funcs.
2011-07-07 23:27:27 -04:00
Behdad Esfahbod 4b6317c4f4 More code shuffling 2011-07-07 23:14:42 -04:00
Behdad Esfahbod 3361c9a323 Minor 2011-07-07 22:35:17 -04:00
Behdad Esfahbod 76f76812ac Shuffle code around, remove shape_plan from complex shapers 2011-07-07 22:25:25 -04:00
Behdad Esfahbod e88bff9b4d Minor, use function typedefs 2011-07-07 22:03:02 -04:00
Behdad Esfahbod 359dcaa0d3 Update copyright headers 2011-07-07 21:55:05 -04:00
Behdad Esfahbod d8d0c480c8 Refactor some code common to GSUB and GPOS 2011-07-07 21:22:08 -04:00
Behdad Esfahbod b70c96dbe4 Enable applying GSUB/GPOS features in multiple segments
Fixes https://bugzilla.mozilla.org/show_bug.cgi?id=644184
among others.

Shapers now can request segmented feature application by calling
add_gsub_pause() or add_gpos_pause().  They can also provide a
callback to be called at the pause.  Currently the Arabic shaper
uses pauses to enforce certain feature application.  The Indic
shaper can use the same facility to pause and do reordering in the
callback.
2011-07-07 21:12:15 -04:00
Behdad Esfahbod f6d7a9bb4c Shuffle code around 2011-07-07 16:20:35 -04:00
Behdad Esfahbod 2e18c6dbdf Fix reverse_range() position loop
Mozilla Bug 669175 - Slow rendering of text sometimes in this case,
using direction: rtl
2011-07-06 16:05:45 -04:00
Behdad Esfahbod fa2befa46f Minor 2011-07-04 17:18:57 -04:00
Behdad Esfahbod d69d5ceaa0 [Indic] Well, at least finding syllables works now :)
Still not much there.
2011-07-04 12:56:38 -04:00
Behdad Esfahbod 4ec30aec30 [Indic] Optimize Indic table storage 2011-06-28 14:13:38 -04:00
Behdad Esfahbod c4a59de6d8 [Indic] Generate a single data table instead of multiple ones 2011-06-28 14:03:29 -04:00
Behdad Esfahbod 8fdba506f0 [Indic] Define indic_position_t 2011-06-24 20:45:55 -04:00
Behdad Esfahbod 65988a145b [Indic] Add a table of consonant positions
Copied form HarfBuzz.old Indic data.  These are below and post
consonants.  This is temporary.  Read the comment in the patch.
2011-06-24 19:05:52 -04:00
Behdad Esfahbod c7fe56a1d5 [Indic] Some of the basic features are global; Mark them so 2011-06-24 19:05:34 -04:00
Behdad Esfahbod 867361c3ad [indic] Add syllable recognition state machine
Using an incredible tool called Ragel.
2011-06-17 18:35:46 -04:00
Behdad Esfahbod 422e08dbb8 Better categorize Indic character classes
Matches OT types now.
2011-06-15 17:22:48 -04:00
Behdad Esfahbod 31f18abecb Minor compiler warning fixes 2011-06-15 09:49:58 -04:00
Behdad Esfahbod e3693b72f0 Change a couple strstr() to strchr() 2011-06-15 09:33:52 -04:00
Behdad Esfahbod b9452bfc16 Fix compiler warnings with -pedantic 2011-06-14 14:47:07 -04:00
Behdad Esfahbod 970e092dc2 Remove extra semicolon 2011-06-14 14:35:44 -04:00
Behdad Esfahbod 8142680802 Cosmetic 2011-06-13 16:12:56 -04:00
Behdad Esfahbod 902ab866f2 GNOME Bug 652227 - Unconditional use of stdint.h 2011-06-10 23:08:54 -04:00
Behdad Esfahbod 20503ccd57 More Indic data shuffling 2011-06-07 17:02:48 -04:00
Behdad Esfahbod 63b177e45c Minor 2011-06-07 15:51:40 -04:00
Behdad Esfahbod b9ddbd5593 [Indic] Start an Indic shaper
Nothing functional in there yet.

So far, we're parsing IndicSyllabicCategory.txt and IndicMatraCategory.txt
fils from Unicode Character Database and store them in an array to be used
by the shaper.  Also hooked up the shaper, but it does not do anything
right now.
2011-06-02 17:43:12 -04:00
Behdad Esfahbod 697a65c5f5 Minor 2011-06-01 23:15:48 -04:00
Behdad Esfahbod 9de1481f2b Update to ArabicShaping-6.1.0d2.txt 2011-06-01 20:45:14 -04:00
Behdad Esfahbod 9d49433efb Minor rename 2011-06-01 18:10:10 -04:00
Behdad Esfahbod 89a2bc9ba6 [Vertical] Apply vertical features
We apply all of vert, vrt2, vkrn, valt, and vpal.
2011-05-31 15:18:13 -04:00
Behdad Esfahbod 0c6a9767c8 [hb-view] Add --face-index to choose a face in a TrueType Collection 2011-05-31 12:59:17 -04:00
Behdad Esfahbod 4f28fbdd80 Fix TTC header handling
Also change the Version type to avoid similar bugs in the future.

Reported by Grigori Goronzy.
2011-05-31 12:33:11 -04:00
Behdad Esfahbod 21deab2bdc Fixed inifinite loop introduced in 7403e055cd
k is the index, not j.

Reported by Tom Hacohen.
2011-05-30 11:08:40 -04:00
Behdad Esfahbod 51881a61ca Shrink code size 2011-05-27 18:15:56 -04:00
Behdad Esfahbod 90645fb24b [OT] Separate map_builder from the actual map
Respectively, separate planner from the actual plan.
2011-05-27 18:13:31 -04:00
Behdad Esfahbod 5560a19e2b Minor 2011-05-27 17:49:16 -04:00
Behdad Esfahbod 5bc18195d5 Add check-includes.sh 2011-05-27 15:58:54 -04:00
Behdad Esfahbod 376dafa6ed Hide internal symbols 2011-05-27 03:40:04 -04:00
Behdad Esfahbod 329c15714b Add libtool versioning
The versioning is automatic.  For now, soname-major is 0.  With
the 1.0.0 release it will jump to 1 and stay there forever.
2011-05-25 16:07:07 -04:00
Behdad Esfahbod 2d8ebcb9d0 [API] One last font-funcs API change
Now that vertical text works correctly, I'm doing a last round
modification of the font-funcs API to simplify.  Expect no more
changes around here.
2011-05-25 11:27:33 -04:00
Behdad Esfahbod 7403e055cd [Vertical] fix vertical gpos
Wow, it took me a few days to find the right fix!

We now set the advance for attached marks to zero, but we
do this in the _finish() state of gpos, so it shouldn't
regress with fonts like DejaVuSansMono that explicitly
decrease the mark advance width to set it to zero.
2011-05-25 10:52:15 -04:00
Behdad Esfahbod 3b0bb855e0 [Vertical] GPOS x/y advance adjustments only apply in hori/vert respectively 2011-05-20 15:59:59 -04:00
Behdad Esfahbod cc2086d67c [Vertical] Fix GPOS y-advance direction 2011-05-19 19:19:50 -04:00
Behdad Esfahbod 67d51ff961 [Vertical] Do fallback origin calculation 2011-05-19 19:08:57 -04:00
Behdad Esfahbod 60fbb36096 [Vertical] GPOS is always done with horizontal origin 2011-05-19 18:46:15 -04:00
Behdad Esfahbod 8b38faeede More vertical
Starting to get there, but not without yet another round of changes.

I think I know wheere to go now.
2011-05-19 13:08:00 -04:00
Behdad Esfahbod e609aeb1e2 [hb-view] Add --annotate
Currently it only marks glyph origins.
2011-05-18 10:17:02 -04:00
Behdad Esfahbod b8d76dd74e Vertical: Adjust origin in glyph_extents() and glyph_contour_point()
The base for vertical is almost ready now.
2011-05-17 23:31:00 -04:00
Behdad Esfahbod 190981851f Cosmetic 2011-05-17 23:27:22 -04:00
Behdad Esfahbod 2c3f51a11c Minor 2011-05-17 23:23:27 -04:00
Behdad Esfahbod 7e2c85de30 [API] Vertical support, take 2
I like this API *much* better.  Implementation still incomplete, but
horizontal works.
2011-05-17 17:55:03 -04:00
Behdad Esfahbod 744970af4d [API] Add support for vertical text
Design not final yet, and in fact I'm going to change it immediately,
but this is an standalone change for itself.
2011-05-17 17:12:34 -04:00
Behdad Esfahbod 4053f3f788 Cosmetic 2011-05-16 17:03:27 -04:00
Behdad Esfahbod 56d12e0356 Remove unnecessary TODO item 2011-05-16 16:01:58 -04:00
Behdad Esfahbod 1883af3796 [hb-view] Start work on vertical support 2011-05-16 15:18:16 -04:00
Behdad Esfahbod 9aa6f96af5 [hb-view] No need to allocate an extra glyph item at the end 2011-05-16 15:08:31 -04:00
Behdad Esfahbod 1a64f6e19a [API] Add HB_LANGUAGE_INVALID 2011-05-13 22:55:32 -04:00
Behdad Esfahbod 40b5c2e86c [test/test-ot-tag] Test hb-ot-tag.h, fix many bugs
I'm in awe with how many bugs this test revealed.  All fixed.
2011-05-13 22:46:36 -04:00
Behdad Esfahbod 7fc5a30cb4 [API] Add hb_face_make/is_immutable() 2011-05-12 17:48:20 -04:00
Behdad Esfahbod 20c8b908dd Finish off previous change 2011-05-12 15:19:33 -04:00
Behdad Esfahbod 0fd8c2f1be [API] Make get_glyph() callback return a boolean
We need to know whether the glyph exists, so we can fallback to
composing / decomposing.  Assuming that glyph==0 means "doesn't exist"
wouldn't work for applications like Pango that want to use different
"doesn't exist" glyph codes for different characters.  An explicit
return value fixes that.
2011-05-12 15:14:13 -04:00
Behdad Esfahbod 805af72405 Rename get_kernings() arguments from first/second_glyph to left/right_glyph
Makes it clear that kerning is in visual order.
2011-05-12 12:39:40 -04:00
Behdad Esfahbod df077fadd7 [object] Make object inert during destruction
Such that user_data and other finalizers cannot resurrect object
2011-05-12 01:19:39 -04:00
Behdad Esfahbod 52df150efe Fix font subclass chainup
Test passing now.
2011-05-12 00:46:57 -04:00
Behdad Esfahbod 7033518f75 [API] Pass face to get_table() 2011-05-11 23:31:15 -04:00
Behdad Esfahbod b467827806 [API] Remove const from font user_data 2011-05-11 23:25:28 -04:00
Behdad Esfahbod 9a14688e40 [API] Rename hb_face_create_for_data() to hb_face_create() 2011-05-11 22:49:29 -04:00
Behdad Esfahbod 46d6a21cc8 [API] Add hb_ot_layout_substitute_start/finish() 2011-05-11 22:33:13 -04:00
Behdad Esfahbod c84d15f52e Remove unused hb_set_t 2011-05-11 22:23:15 -04:00
Behdad Esfahbod 389a7c9e67 Remove hb_static_threadsafe_set_t 2011-05-11 22:21:38 -04:00
Behdad Esfahbod e06d4eda7b Use constructor/destructor for hb_ot_shape_plan_t 2011-05-11 22:18:31 -04:00
Behdad Esfahbod daa446f184 Fix compile with no mutex available 2011-05-11 21:31:25 -04:00
Behdad Esfahbod 1e56c476c1 Free static mutex'es 2011-05-11 21:28:01 -04:00
Behdad Esfahbod 831886a9b4 Streamline mutex stuff 2011-05-11 21:27:52 -04:00
Behdad Esfahbod 438c4eee35 Remove unused hb_mutex_trylock() 2011-05-11 21:14:34 -04:00
Behdad Esfahbod 80a6833b03 [API] Add hb_*_get_empty() for all objects 2011-05-11 18:21:58 -04:00
Behdad Esfahbod d3b30be378 [API] Add HB_UNTAG()
Useful in C API only.
2011-05-11 18:06:12 -04:00
Behdad Esfahbod 3cc6e9dcb4 Minor 2011-05-11 18:02:48 -04:00
Behdad Esfahbod 4101ca7dbb Plug more leaks
All good now.
2011-05-11 14:30:56 -04:00
Behdad Esfahbod 6a7ac79e26 Plug leaks 2011-05-11 14:19:18 -04:00
Behdad Esfahbod 7aa12ebdff [unicode] Simplify method setting 2011-05-11 11:55:11 -04:00
Behdad Esfahbod d5bfd02721 Minor 2011-05-11 11:48:28 -04:00
Behdad Esfahbod 6a4e7e1372 Add maxp table
Not used for anything right now.  Will use to get num_glyphs in the future.
2011-05-11 10:31:33 -04:00
Behdad Esfahbod a513dbcf73 [API] Change signature of get_contour_point and get_kerning ffuncs
get_contour_point now takes glyph id before point_index.

get_kerning now takes a vector to fill-in.
2011-05-11 00:38:22 -04:00
Behdad Esfahbod 63d646fb29 [font] Do user-space conversion when chaining up to parent font 2011-05-11 00:15:37 -04:00
Behdad Esfahbod b6f902a1a9 Minor 2011-05-11 00:04:15 -04:00
Behdad Esfahbod abcfe9b59b Remove hb_ot_layout_context_t, simplify code 2011-05-11 00:02:02 -04:00
Behdad Esfahbod 1ded6d8bbf Make default font-funcs chain-up to the parent 2011-05-10 20:50:06 -04:00
Behdad Esfahbod b9d975b931 [API] Pass down closure user_data to font funcs 2011-05-10 20:41:13 -04:00
Behdad Esfahbod 446df9cdb1 Whitespace 2011-05-10 20:14:44 -04:00
Behdad Esfahbod 686c2d165d [API] Remove font_funcs func getter functions 2011-05-10 20:04:26 -04:00
Behdad Esfahbod defc45be6d [API] Add hb_font_create_sub_font() and hb_font_get_parent()
Not quite useful just yet.
2011-05-10 20:02:49 -04:00
Behdad Esfahbod 11bb8fe7b3 [font] Fix internal sign of x/y_scale
Should have been done as part of da97541988
2011-05-10 19:57:00 -04:00
Behdad Esfahbod 85e6218e33 [API] Remove broken-by-design hb_font_unset_funcs() 2011-05-10 19:40:44 -04:00
Behdad Esfahbod 74f1d896f2 Add hb_font_make/is_immutable() 2011-05-10 19:39:32 -04:00
Behdad Esfahbod 8c7a100a4d Fix build without mutex 2011-05-10 19:21:07 -04:00
Behdad Esfahbod 19d3035c40 Remove duplicate atomic_int implementation 2011-05-10 19:18:12 -04:00
Behdad Esfahbod 45bfa99034 Fix set implementation to be truly threadsafe even with destroy() callbacks
The test/object test is passing again, instead of deadlocking.
2011-05-10 19:15:49 -04:00
Behdad Esfahbod 1c9f8717eb [API] Simplify blob API, remove lock 2011-05-06 22:59:42 -04:00
Behdad Esfahbod a0f337a1cc Remove unused hb_blob_try_writable_inplace() 2011-05-06 19:20:52 -04:00
Behdad Esfahbod 08611d5194 Add note re deadlocks 2011-05-06 16:28:10 -04:00
Behdad Esfahbod 34fb5521a5 [API] Add hb_language_get_default()
It uses locale information to detect default language.  It's used by
hb_shape() whenever language is not set on the buffer.

Not sure how to properly test it in the test suite.  Tested by observing
that with DejaVu Sans we select the proper local glyph version for U+431
under Serbian locale.  See http://www.pango.org/ScriptGallery
2011-05-06 00:05:08 -04:00
Behdad Esfahbod c78f448558 [API] Add version macros and functions
Step version up to 0.5.0.

Also, fix to pass "make distcheck"
2011-05-05 21:31:04 -04:00
Behdad Esfahbod 3935af1c0d [buffer] Remove wrong optimization
While the cluster fields of the glyph string are usually sorted, they
wouldn't be in special cases (for example for non-native direction).
Blindly using bsearch is plain wrong.  If we want to reintroduce this
optimization we have to make sure we know the buffer clusters are
monotonic and in which direction.  Not sure it's worth it though.
2011-05-05 16:09:45 -04:00
Behdad Esfahbod 46df682851 Make user_data access threadsafe
For now, by taking a global user_data mutex.
2011-05-05 15:33:19 -04:00
Behdad Esfahbod 218e67b9ee Shrink code 2011-05-05 15:28:37 -04:00
Behdad Esfahbod b8d6183ebc Use threadsafe set implementation for hb_language lookups
Note that the static variable has to be a global static, as gcc
implements local statics differently and that would require linking
to libstdc++, which we don't want.
2011-05-05 15:14:04 -04:00
Behdad Esfahbod d37486d87b Add hb_threadsafe_set_t 2011-05-05 15:07:54 -04:00
Behdad Esfahbod b45f32ee4e Use hb_array_t for hb_language_t mapping 2011-05-05 15:00:43 -04:00
Behdad Esfahbod 21d2c92fdf Move code around 2011-05-05 14:47:53 -04:00
Behdad Esfahbod 265ac614ea Replace fixed-size lookup_maps array with hb_array_t 2011-05-05 14:38:16 -04:00
Behdad Esfahbod 6843569d2c Replace fixed-size feature_maps array with hb_array_t 2011-05-05 14:30:51 -04:00
Behdad Esfahbod 44b0a4d2fc Replace fixed-size feature_infos array with hb_array_t 2011-05-05 13:42:19 -04:00
Behdad Esfahbod b214ec3ac0 Minor 2011-05-05 13:24:07 -04:00
Behdad Esfahbod 811482bd65 Replace hb_map_t with hb_set_t which is more intuitive and flexible 2011-05-05 13:21:04 -04:00
Behdad Esfahbod 478a42536f Make array/map implementation more generic 2011-05-05 12:39:51 -04:00
Behdad Esfahbod b81bd42951 Make hb_mutex_*() macros take a pointer
More intuitive.
2011-05-05 00:21:16 -04:00
Behdad Esfahbod a4b1900913 Add hb_static_mutex_t 2011-05-05 00:17:43 -04:00
Behdad Esfahbod 56eb5ad6f9 Move code around
Mutex (and Windows.h by extension) are fairly isolated now.
2011-05-04 19:27:37 -04:00
Behdad Esfahbod d292885893 [ft] Fix font->face handling
Don't use _cached()
2011-05-03 01:03:53 -04:00
Behdad Esfahbod 2000179487 Move Win32 thread-safety stuff to hb-object-private.h
The Win32 definitions for LONG, ULONG, etc conflicts with
hb-open-type.h.  Avoid that by making sure hb-object-private.h
and hb-open-type.h are not included in the same compilation unit.
2011-05-03 00:49:06 -04:00
Behdad Esfahbod 266b34418c Refactor to keep hb-object-private.h and hb-open-type.h separate
Needed to be able to include <Windows.h> from hb-object-private.h.
2011-05-03 00:35:53 -04:00
Behdad Esfahbod d4141a44b9 [blob] Implement sub_blob() in terms of create()
Fixes problem with uninitialized sub_blob->mutex among other things.

Reported by Bradley Grainger.
2011-05-03 00:19:18 -04:00
Behdad Esfahbod fc52e9e44c Implement win32 thread-safety stuff
Patch from Bradley Grainger.
2011-05-03 00:09:16 -04:00
Behdad Esfahbod f55272ecde Add hb_mutex_free() and use it
Based on patch by Bradley Grainger.
2011-05-02 20:57:28 -04:00
Behdad Esfahbod 8d5186484b Cosmetic 2011-05-02 20:52:21 -04:00
Behdad Esfahbod 72657e4ce7 [API] Make hb_font_create() take a face and reference it 2011-05-02 20:47:23 -04:00
Behdad Esfahbod cec6611c5c Protect NULL in a couple places 2011-05-02 20:18:58 -04:00
Behdad Esfahbod 5a5030366e Fix bug in array growth implementation
With this, test/object is now passing.  Yay!
2011-05-02 19:54:29 -04:00
Behdad Esfahbod 16123e1070 Fix bug in map implementation 2011-05-02 19:54:17 -04:00
Behdad Esfahbod 1cd5969f25 [object] Fix bug in get_user_data() implementation 2011-05-02 19:53:39 -04:00
Behdad Esfahbod 4911062d5b [API] Rename hb_blob_create_empty() to hb_blob_get_empty() 2011-05-02 19:36:39 -04:00
Behdad Esfahbod 1ab1d3e38c [face] Return nil face if blob is inert 2011-05-02 19:35:53 -04:00
Behdad Esfahbod e87867cb88 [buffer] Fail in _create() if we cannot pre-allocate the requested size 2011-05-02 19:35:05 -04:00
Behdad Esfahbod c784c67a28 [unicode] Make _get_parent() return _nil object instead of NULL 2011-05-02 15:59:57 -04:00
Behdad Esfahbod 03034acb8a [icu] Make sure we return script UNKNOWN instead of INVALID 2011-05-02 12:37:45 -04:00
Behdad Esfahbod d02985ec5a ISO 15924 fixes
Update to http://unicode.org/iso15924

Fixes some of the test failures in test-unicode with ICU.  Still
one more to fix before the test passes.
2011-05-02 12:35:14 -04:00
Behdad Esfahbod 6af9cff5e1 [test/unicode] Use text fixture instead of static variables 2011-04-29 12:12:37 -04:00
Behdad Esfahbod 243673d601 [test/buffer] Add more extensive UTF-8 test data from glib 2011-04-28 19:37:51 -04:00
Behdad Esfahbod c7ffe2ad5f [API Remove hb_font_funcs_copy()
Will be adding font_funcs subclassing instead.
2011-04-28 16:03:29 -04:00
Behdad Esfahbod 30f34d08d4 [TODO] Remove finished items 2011-04-28 16:02:40 -04:00
Behdad Esfahbod 080a0eb7d8 Add _hb_unsigned_int_mul_overflows 2011-04-28 16:01:01 -04:00
Behdad Esfahbod 3264042873 [test/buffer] Test pre_allocate() and allocation_successful() 2011-04-28 14:24:16 -04:00
Behdad Esfahbod 123aa04f7b Fix possible but improbable overflow in hb_array_t 2011-04-28 12:58:28 -04:00
Behdad Esfahbod e0db4b868f [buffer] More error handling
Should be all set now.
2011-04-28 12:56:49 -04:00
Behdad Esfahbod 5fa849b77d [API] Add _set/get_user_data() for all objects 2011-04-27 21:46:01 -04:00
Behdad Esfahbod 852e08ec8f Move code around 2011-04-27 21:45:51 -04:00
Behdad Esfahbod 29c67d3f70 Add initial implementation of user_data to objects 2011-04-27 21:27:40 -04:00
Behdad Esfahbod 47e71d9661 [object] Remove unnecessary use of macros 2011-04-27 16:41:08 -04:00
Behdad Esfahbod 8be1420f8f [blob] Use HB_FUNC instead of __FUNCTION__ 2011-04-27 16:16:43 -04:00
Behdad Esfahbod ae008b90cf [object] Add tracing support back in 2011-04-27 16:16:39 -04:00
Behdad Esfahbod 39a840ae65 [API] Add hb_direction_from/to_string()
And hb-view --direction argument.
2011-04-27 14:48:19 -04:00
Behdad Esfahbod f1425a549f Rename hb-view.c and test.c to .cc files 2011-04-27 12:15:06 -04:00
Behdad Esfahbod 65e0063eae Make buffer size growth start from 32 instead of 8 2011-04-27 09:38:23 -04:00
Behdad Esfahbod d4bee9f813 [API] Add hb_unicode_funcs_get_default() 2011-04-27 09:38:19 -04:00
Behdad Esfahbod 153142dac8 Replace simple macros with inline functions for better type safety
Now that we use C++ for all source code, lets benefit from it!

The hb_be_int16/32_get/put/eq() macros grow code size if replaced with
inline functions, so leave them as is.
2011-04-27 02:07:46 -04:00
Behdad Esfahbod 40a9b8154f Add TODO item 2011-04-27 01:48:56 -04:00
Behdad Esfahbod ebdc83467c Don't return in void function
Would have been nice if gcc had warned...
2011-04-27 01:41:24 -04:00
Behdad Esfahbod ec6f9c2fd0 Further simplify object handling 2011-04-21 18:35:58 -04:00
Behdad Esfahbod fca368c468 Add hb_object_header_t which is the common part of all objects
Makes way for adding arbitrary user_data support.
2011-04-21 18:24:02 -04:00
Behdad Esfahbod a9f24c8029 Move hb_reference_count_t to hb-private.h 2011-04-21 17:18:22 -04:00
Behdad Esfahbod 2409d5f8d7 Update Copyright headers 2011-04-21 17:14:28 -04:00
Behdad Esfahbod 08da7a3841 [hb-view] Accept numbers in feature tag name
Reported by Adam Twardoch.
2011-04-21 16:59:10 -04:00
Behdad Esfahbod 24229eb132 Remove obsolete comment
Talking to Ryan Lortie, he thinks my comment doesn't make sense.

So I'm making the getter const.  Note that g_atomic_int_get()
casts that away itself, so we don't need to worry about that
(which kinda makes me uncomfortable actually).
2011-04-21 16:55:17 -04:00
Behdad Esfahbod dcb7026f33 Add ASSERT_STATIC_EXPR macro
Unused right now.
2011-04-21 16:34:22 -04:00
Behdad Esfahbod 3e8bdbf941 Cleanup hb_refrence_count_t 2011-04-21 16:16:21 -04:00
Behdad Esfahbod 783a7d6969 [TODO] Remove finished items 2011-04-21 16:03:59 -04:00
Behdad Esfahbod da97541988 [API] Allow negative font x_scale/y_scale
I was reconsidering whether y should grow down, since all three/four
times I've used this API I was tricked and got that wrong in my use.
So I was very inclined to make y grow down instead of up.  However,
considering that the font space has y up and it would be very confusing
for callbacks to work against that, I decided that what I really want
is for the user to be able to set y_scale to a negative number to imply
that user-space y grows down.

Changing x_scale/y_scale from unsigned int to int allows that, and I've
made pango to use that instead of negating glyph y_offset later.  hb-ft
however still has y group up.  I *guess* that's how FreeType works?
I'm not sure, FreeType docs don't make this clear...

I'm happy with the resolution :-).
2011-04-21 15:15:02 -04:00
Behdad Esfahbod 4d559cddbb [icu] Remove big script switch(), rely on reverse-lookup 2011-04-21 14:58:23 -04:00
Behdad Esfahbod d18431b4cd Move hb_reference_count_t from macros to inline methods 2011-04-20 18:59:10 -04:00
Behdad Esfahbod c57d454acc Rename all private sources and headers to C++ files
So we can liberally use the simple features of C++ that parts of the
codebase is already using.
2011-04-20 18:50:27 -04:00
Behdad Esfahbod f19f4f9b09 Rename hb-blob.c to hb-blob.cc in preparation of more changes 2011-04-20 18:25:56 -04:00
Behdad Esfahbod 9417c1c0d2 [API] Make hb_face_reference_table() return empty blob instead of NULL
The idea here is that:

  - Like pretty much all other API in harfbuzz, user does not have to
    check for NULL.

  - In any caller code, the case of missing table should be handled
    exactly the same way that a too-short table is handled.  Turning
    a non-existent talbe into a table of size 0 makes the user code
    safer.
2011-04-20 17:21:23 -04:00
Behdad Esfahbod c035812feb [API] Rename hb_face_get_table() to hb_face_reference_table()
That correctly reflects the reference ownership transfer happening.
2011-04-20 17:03:00 -04:00
Behdad Esfahbod 2d7b61a4b0 [TODO] Remove done items 2011-04-20 16:40:56 -04:00
Behdad Esfahbod af02933739 [API] Remove hb_*_get_reference_count()
This was a bizzare piece of API that I inherited from cairo.  It has
been wrong adding them to cairo in the first place.  Remove them before
someone uses them!
2011-04-20 15:49:31 -04:00
Behdad Esfahbod 440a76b630 [OT] Fix script to ot-script-tag conversion 2011-04-20 14:20:00 -04:00
Behdad Esfahbod a3036a3e97 Minor 2011-04-20 14:13:23 -04:00
Behdad Esfahbod 5668189c12 [API] font: move user_data before destroy()
This is the common convention for language binding tools.
2011-04-20 03:03:32 -04:00
Behdad Esfahbod e5847f75fb [API] blob: move user_data before destroy()
This is the common convention for language binding tools.
2011-04-20 02:59:28 -04:00
Behdad Esfahbod f144a8ea84 [icu] Add two-way script conversion functions
Also optimizes the common-direction script lookup.
2011-04-20 02:54:42 -04:00
Behdad Esfahbod 0809aadd4b [glib] Add two-way script conversion functions
Also optimizes the common-direction script lookup to be an array lookup.
2011-04-20 02:44:29 -04:00
Behdad Esfahbod 5c8c1b680c Remove verbose comments 2011-04-20 02:29:22 -04:00
Behdad Esfahbod fb194b8794 unicode: Cleanup implementation 2011-04-20 02:27:39 -04:00
Behdad Esfahbod ecfb773829 Cosmetic 2011-04-20 01:34:51 -04:00
Ryan Lortie 2fd0c577e3 [API] unicode: rework virtual functions for subclassing
Unicode data providers can now be subclassed, including support for
chain-up.  The interface should now be nicely bindable, as well.

Also fix glib unicode funcs that where broken after hb_script_t
changes.  Nicely caught by the test-unicode.c added in this commit.
2011-04-20 00:19:20 -04:00
Behdad Esfahbod f85faee9b3 [API] Rename hb_buffer_add_glyph() to hb_buffer_add() 2011-04-19 00:38:01 -04:00
Behdad Esfahbod aab0de50e2 [API] Add hb_buffer_allocation_successful()
Returns the error status of the buffer.
2011-04-19 00:32:19 -04:00
Ryan Lortie 02a534b23f [API] Rename hb_buffer_ensure() to hb_buffer_pre_allocate()
The new name is self-documenting.
2011-04-19 00:05:43 -04:00
Ryan Lortie 70566befc5 [API} hb_buffer_get_glyph_{infos,positions}: Add length out parameter
Return the length, whenever we return an array.  Makes it easier on the
language bindings.
2011-04-19 00:03:44 -04:00
Behdad Esfahbod 62879eebd9 [API] Use ISO 15924 tags for hb_script_t
This simplifies the code, reduces static data, and makes the design
more extensible to future additions of new scripts.
2011-04-18 23:40:21 -04:00
Behdad Esfahbod c0af193c8e Change buffer default properties to invalid
This includes HB_DIRECTION_INVALID and HB_SCRIPT_INVALID.

The INVALID will cause a "guess whatever from the text" in hb_shape().
While it's not ideal, it works better than the previous defaults at
least (HB_DIRECTION_LTR and HB_SCRIPT_COMMON).
2011-04-15 19:26:24 -04:00
Behdad Esfahbod 00bec2c969 Move enum types to hb-common.h 2011-04-15 19:16:54 -04:00
Behdad Esfahbod b54cd07b26 Mark internal buffer variables private 2011-04-15 19:12:01 -04:00
Behdad Esfahbod 0e8d35c093 Add hb_script_from_string() 2011-04-15 19:08:43 -04:00
Behdad Esfahbod 8f0d7e0c3f Remove hb_buffer_clear_positions(), add hb_ot_layout_position_start() 2011-04-15 19:08:43 -04:00
Behdad Esfahbod 2fc56edff6 [API] Remove hb_buffer_clear()
One should use hb_buffer_reset() really.
2011-04-15 19:08:38 -04:00
Behdad Esfahbod 5814dfa3f5 Cosmetic 2011-04-15 14:41:04 -04:00
Behdad Esfahbod 3cbdf70e0a Make hb_language_t typesafe 2011-04-15 12:33:14 -04:00
Behdad Esfahbod c910bec863 Add hb_buffer_reset() and hb_buffer_set_length() 2011-04-13 15:49:06 -04:00
Behdad Esfahbod 69ea23cb5d Minor 2011-04-13 15:02:40 -04:00
Behdad Esfahbod 8e4bb3cacc Fold hb-language.[ch] into hb-common.[ch] 2011-04-11 17:55:58 -04:00
Behdad Esfahbod 316b7a1afb Make hb_language_from_string("") return NULL language 2011-04-11 17:49:10 -04:00
Behdad Esfahbod 99b74760a4 Rename hb_category_t to hb_unicode_general_category_t 2011-04-11 15:47:40 -04:00
Behdad Esfahbod 4188096a77 Make HB_TAG_CHAR4 private
It's just sugar.
2011-04-11 14:58:28 -04:00
Behdad Esfahbod 7ff7401c92 Make hb_tag_from_string(NULL) return HB_TAG_NONE 2011-04-11 13:27:30 -04:00
Behdad Esfahbod db5227c40e Move macros around 2011-04-11 13:16:08 -04:00
Behdad Esfahbod 07233581c9 Rename HB_TAG_STR() to HB_TAG_CHAR4()
The problem with HB_TAG_STR() was that it expected a string of size 4
exactly, and unlike hb_tag_from_string() it doesn't pad the tag with
space characters.  So, the new name is more appropriate.
2011-04-11 13:12:37 -04:00
Behdad Esfahbod d77b76200e Add few more paratheses to the HB_TAG macro
Never hurts.
2011-04-11 12:29:52 -04:00
Behdad Esfahbod b13640de69 A few more ASSERTs 2011-04-11 12:29:31 -04:00
Behdad Esfahbod ae9eeaff93 Remove warning message from public header file
Since we now assert thos in hb-private.h, the int types cannot be wrong.
(Except for when someone else includes hb-common.h in a very broken
configuration, but that's not our problem!)

Plus, we don't use inline in the public headers, so remove that too.
2011-04-11 12:09:13 -04:00
Behdad Esfahbod 6fd5364bdc Assert int types 2011-04-11 11:47:14 -04:00
Behdad Esfahbod a71b9c8579 Disable 'cswh' by default except for Arabic shaper
That better matches OpenType spec.  Note that we enable it for all
Arabic-shaper scripts.  Ie. we enable it by default for Syriac too,
but the SyriacOT spec does not require it.  I think this is a more
useful compromise than special-casing for Arabic script alone.
2011-04-06 14:04:56 -04:00
Behdad Esfahbod cab6f65bba [hb-view] setlocale (LC_ALL, "")
For now we don't use anything from the locale, but we should default
to using $LANG, etc, if --language is not specified.  Right?
2011-04-04 15:36:51 -04:00
Behdad Esfahbod fb9ca1bfab [hb-view] Rewrite --features parsing, with range support
The --features parsing handles errors now.  More importantly, it
allos limiting individual features to specific byte ranges.  The
format is Python-esque.  Here is how it all works:

  Syntax:	Value:	Start:	End:

Setting value:
  "kern"	1	0	∞	# Turn feature on
  "+kern"	1	0	∞	# Turn feature off
  "-kern"	0	0	∞	# Turn feature off
  "kern=0"	0	0	∞	# Turn feature off
  "kern=1"	1	0	∞	# Turn feature on
  "kern=2"	2	0	∞	# Choose 2nd alternate

Setting index:
  "kern[]"	1	0	∞	# Turn feature on
  "kern[:]"	1	0	∞	# Turn feature on
  "kern[5:]"	1	5	∞	# Turn feature on, partial
  "kern[:5]"	1	0	5	# Turn feature on, partial
  "kern[3:5]"	1	3	5	# Turn feature on, range
  "kern[3]"	1	3	3+1	# Turn feature on, single char

Mixing it all:

  "kern[3:5]=0"	1	3	5	# Turn feature off for range
2011-04-04 14:50:09 -04:00
Behdad Esfahbod ccc6745afa [hb-view] Use cached hb-ft face creation
Avoids recreating the face the second time we call draw().
2011-04-04 14:49:50 -04:00
Behdad Esfahbod 1b4a2cc095 [hb-view] Add --debug
Frees all allocated memory before exiting.  Useful for valgrind run.
2011-04-04 14:45:28 -04:00
Behdad Esfahbod b2da26d1e3 [hb-view] Support --features
Accepts values like:

  --features="-mkmk,aalt=2,calt=1,+cswh"

A minus sign means "=0", a plus sign means "=1".  Default is "=1".
A minus sign overrides an explicit value.
2011-04-01 15:48:43 -04:00
Behdad Esfahbod f48ff19b62 Sort options for clarity 2011-04-01 14:19:10 -04:00
Behdad Esfahbod 5d91c3d547 Add script to/from ISO 15924 tag support
Also adds --script support to hb-view.

If a script tag is not known to us, we pass the ISO 15924 tag around.
Right now, the OT layer ignores that, but we can fix it to blindly
convert that to an OT script tag.
2011-03-16 17:36:32 -03:00
Behdad Esfahbod 3286fc0e9a Let hb_shape() guess script and direction...
- Rename HB_SCRIPT_INVALID_CODE to HB_SCRIPT_INVALID

- Add HB_DIRECTION_INVALID

- Make hb_script_get_horizontal_direction() public

- Make hb_shape() guess script from buffer text (first non-common
  non-inherit script) if buffer script is set to HB_SCRIPT_INVALID (this
  is NOT the default.)

- Make hb_shape() guess direction from buffer script if buffer direction
is set to HB_DIRECTION_INVALID (this is NOT the default.)

- Make hb-view.c set INVALID script and direction on the buffer.

The above changes are meant to make hb-view fairly useful for uni-script
uni-direction text.  The guessing behavior however is NOT the default of
hb_shape() and must be asked for explicitly.  This is intended, because
the guess is not a suitable substitute to full-fledged bidi and script
segmentation.  It's just a testing tool.
2011-03-16 14:53:32 -03:00
Behdad Esfahbod b7b29684df [hb-view] Handle write_to_png errors 2011-03-02 01:01:03 -05:00
Behdad Esfahbod c2cb98c818 [hb-view] Link with -lm 2011-03-01 23:18:09 -05:00
Behdad Esfahbod b5dd44e246 Fix possible overflow 2011-02-28 10:13:52 -08:00
Behdad Esfahbod a4b781e93a Default background color shall either be white or transparent
Definitely not black!
2011-02-23 12:47:56 -05:00
Behdad Esfahbod 5353bf439c Add initial hb-view tool
Currently doesn't handle script or direction.
2011-02-22 18:06:19 -05:00
Bradley Grainger 82438c6ad5 Fix #pragma message for MSVC.
__LOC__ was renamed to _HB__LOC__ in cd7555 but the corresponding
change wasn't made in hb-private.h.
2011-02-15 18:37:29 -05:00
Behdad Esfahbod ba9ab8d6d9 Fix language extension matching 2011-01-10 07:45:41 -05:00
Behdad Esfahbod 7bbe14bed8 Fix 'make distcheck' 2011-01-09 22:29:14 -05:00
Behdad Esfahbod cc1a8a938b Fix ChanContext backtrack matching with GPOS
Reported on mailing list by Keith Stribley and Khaled Hosny.
2011-01-06 14:58:52 -05:00
Behdad Esfahbod 1c3183027f Remove unused realloc
We always allocate and grow str and pos together.
2011-01-06 14:44:14 -05:00
Behdad Esfahbod 756f794a1f Remove Graphite backend
It was unmaintained and the code has to be replaced to use the new
grphite-ng code base.
2010-12-26 20:52:40 -05:00
Behdad Esfahbod f3d9d98793 Docs 2010-12-22 01:39:29 -05:00
Behdad Esfahbod d86a5b3c57 Bug 32274 - classic mongolian shaper
Add support for classic Mongolian script to the Arabic shaper.

Still work to be done around U+180E MONGOLIAN VOWEL SEPARATOR as it
should not be included in the final glyph stream the same way that
ZWNJ, etc should not appear in the final glyph stream.

But the joining part should be done.

There remains the question of how should the U+18A9 MONGOLIAN LETTER ALI
GALI DAGALGA be handled as it has General Category NSM but a letter
nonetheless.  For now, our generic logic makes this a joining T instead
of joining D as other Mongolian letters are.
2010-12-21 18:36:25 -05:00
Behdad Esfahbod b0e7378fa9 Reroute Mandaic shaping through the Arabic shaper
We added Mandaic joining data to the Arabic shaper a while ago, but
were not actually using the Arabic shaper for Mandaic.  Fixed.
2010-12-21 14:19:32 -05:00
Behdad Esfahbod 88e7f37488 Annotate the Arabic joining table with block information 2010-12-21 14:18:24 -05:00
Behdad Esfahbod 1482a39e56 Rename remaining metrics uses to extents 2010-12-17 20:15:05 -05:00
Behdad Esfahbod 22c537657c Rename TableDirectory to TableRecord as per OpenType 1.6 2010-12-14 23:51:29 -05:00
Behdad Esfahbod 33e8b86197 Update 'head' table to OpenType 1.6 2010-12-13 15:54:56 -05:00
Behdad Esfahbod b768333514 Disallow ligature substitutions replacing one glyph 2010-12-13 14:22:35 -05:00
Behdad Esfahbod 7eb875118d Mozilla Bug 618592 - freeze on typekit
Fix apply_lookup() for zero-input broken fonts.
2010-12-13 14:13:35 -05:00
Behdad Esfahbod bbbbe80ec9 Rename original_direction to target_direction 2010-12-07 16:22:02 -05:00
Behdad Esfahbod ee8aaf976a Fix arabic shaping of LTR text
We should ensure-direction before doing any complex work.  The only
exception is mirroring that needs to see the original / final direction,
not the native.  Handle that.
2010-12-07 16:20:42 -05:00
Behdad Esfahbod 4f9e4a40bc Fix failing checks 2010-11-22 11:30:32 -05:00
Behdad Esfahbod 9da26d6669 Remove email address from Copyright headers 2010-11-22 11:03:18 -05:00
Behdad Esfahbod a45f000192 Clarify copyright notice 2010-11-18 13:59:10 -05:00
Behdad Esfahbod 0884a8d9cd Move generated table to its own file 2010-11-17 16:58:21 -05:00
Behdad Esfahbod 14d784116b Update Arabic joining table to include Mandaic
Mandaic was added to Unicode 6.0, but the joining data was not updated.
Draft ArabicShaping.txt from 6.1 includes the joining data for Mandaic.
Use that.
2010-11-17 16:52:58 -05:00
Behdad Esfahbod 43bf2f7f1e Add OpenType script tags for Unicode 5.2 and Unicode 6.0 scripts
Based on tags proposed by Microsoft for inclusion in OpenType.
2010-11-17 14:49:40 -05:00
Behdad Esfahbod afab01cf7c Add Unicode 6.0 scripts 2010-11-17 14:35:34 -05:00
Behdad Esfahbod f234b68d18 Change HB_SCRIPT_MEITEI_MAYEK to HB_SCRIPT_MEETEI_MAYEK
The new name matches the Unicode name.  Reported by Jonathan Kew.
2010-11-17 14:25:44 -05:00
Behdad Esfahbod 300cb41417 Add XXX marks 2010-11-17 12:57:23 -05:00
Behdad Esfahbod 3a852ae7fe Save general category and combining class in the buffer for reuse 2010-11-03 16:37:24 -04:00
Behdad Esfahbod a5ab682b9b More "unreached code" warning fixes
Ugly :(.
2010-11-03 16:10:12 -04:00
Behdad Esfahbod 4e22c7e941 Add comment 2010-11-03 16:10:12 -04:00
Behdad Esfahbod 0342034d1c Pedantic 2010-11-03 16:10:12 -04:00
Behdad Esfahbod 4a2d844c2f Minor code shuffling 2010-11-03 15:28:56 -04:00
Behdad Esfahbod 11e3ec444a Fix a few more "unreachable code" warnings 2010-11-03 15:11:04 -04:00
Behdad Esfahbod 2304856340 Remove another couple lines of dead code 2010-11-03 12:47:27 -04:00
Behdad Esfahbod b8783c85ac Fix unreachable-code warning 2010-11-03 11:51:43 -04:00
Behdad Esfahbod c2709119c8 Move things around some more 2010-11-02 19:12:59 -04:00
Behdad Esfahbod 194d4566ec Move buffer var allocation local 2010-11-02 19:12:59 -04:00
Behdad Esfahbod 1e7c1fcbc3 Move code around 2010-11-02 19:12:59 -04:00
Behdad Esfahbod bf94b3ad22 Move some more code around 2010-11-02 19:12:59 -04:00
Behdad Esfahbod 6334658fe7 Simplify mark skipping logic 2010-11-02 19:12:59 -04:00
Behdad Esfahbod 8c69e65abe Rename lookup_flags to lookup_props since it's more than just flags 2010-11-02 19:12:59 -04:00
Behdad Esfahbod 98370e89d1 WIP removing external synthesized GDEF support and implementing it internally 2010-11-02 19:12:58 -04:00
Behdad Esfahbod 870e2d6eac Remove unused function 2010-11-02 19:12:58 -04:00
Behdad Esfahbod 1115890b90 More cleanup 2010-11-02 19:12:58 -04:00
Behdad Esfahbod dbf56b1d94 More lig-id cleanup 2010-11-02 19:12:58 -04:00
Behdad Esfahbod f6a23a0b91 More removal of lig-id code from buffer 2010-11-02 19:12:58 -04:00
Behdad Esfahbod dd2ffd282c Minor renaming 2010-11-02 19:12:58 -04:00
Behdad Esfahbod fe263272a2 Move setting lig_id/component out of buffer and to the gsub code 2010-11-02 19:12:58 -04:00
Behdad Esfahbod 2e2b2480c0 Always allocate new ligature id
No practical point in reusing ligature ids.
2010-11-02 19:12:58 -04:00
Behdad Esfahbod bf07d5a29c Set component=0 for ligature glyph 2010-11-02 19:12:58 -04:00
Behdad Esfahbod 37ab877149 Remove comment 2010-11-02 19:12:58 -04:00
Behdad Esfahbod 88474c6fda Get rid of the OpenType-specific internal buffer representation
Add variant integers to buffer item types.  More cleanup coming.
2010-11-02 19:12:58 -04:00
Behdad Esfahbod 6cb8c34930 Add hb_var_int_t 2010-11-02 19:12:57 -04:00
Behdad Esfahbod f22802431a Remove trailing comma 2010-11-02 19:12:57 -04:00
Behdad Esfahbod 13528d0c78 Supposedly implement vertical support in GPOS
Not tested at all.
2010-10-27 14:09:27 -04:00
Behdad Esfahbod 9624de5b49 Clarify cursive_chain (and change its sign) 2010-10-27 13:44:59 -04:00
Behdad Esfahbod d6c9eadb88 Remove more pointless LONGTERMTODO items 2010-10-27 12:34:50 -04:00
Behdad Esfahbod e204674fe3 Rename hb_ot_layout_get_lig_carets() to hb_ot_layout_get_ligature_carets() 2010-10-27 12:32:02 -04:00
Behdad Esfahbod 3357d145f8 Implement vertical support in get_lig_carets() 2010-10-27 12:30:46 -04:00
Behdad Esfahbod 8eeed7eddc Remove LONGTERMTODO item that I'll never fix 2010-10-27 12:07:49 -04:00
Behdad Esfahbod 184a5279c6 Remove unused macro 2010-10-27 12:00:49 -04:00
Behdad Esfahbod af5d02a269 Rewrite Cursive joining to act more like other pair lookups
Look forward for next character instead of joining to the last character.
2010-10-27 11:54:26 -04:00
Behdad Esfahbod ea22c749c7 Fix Cursive positioning
Test case: "مرا" rendered using IranNastaliq.
2010-10-27 11:09:48 -04:00
Behdad Esfahbod aefdb64689 Fix segfault with Arabic combining marks 2010-10-27 10:40:39 -04:00
Behdad Esfahbod 248e3c2ba4 Oops, remove extra mask setting that broke complex shaping 2010-10-27 01:23:14 -04:00
Behdad Esfahbod 502f4cba3e Divide get_metrics into get_advance and get_extents
Graphite module not updated.
Bump version to 0.3.
2010-10-27 01:13:56 -04:00
Behdad Esfahbod ec6c0e54d3 Fix blob leak 2010-10-26 11:28:14 -04:00
Behdad Esfahbod bd7378b2ef Massage mask setting a bit more
Still finding the exact correct way the masks should be set.
2010-10-13 18:33:16 -04:00
Behdad Esfahbod 961f9baa7b Oops, actually set global mask 2010-10-13 17:17:00 -04:00
Behdad Esfahbod 39dede9fff Make sure boolean features always use value=1
Previously boolean features turned on the entire feature mask.  This is
wrong if feature is Alternate and user has provided values bigger than one.
Though, I don't think other engines support such corner cases.
2010-10-13 15:54:06 -04:00
Behdad Esfahbod 3506b2e78d Return early if mask is 0 2010-10-13 15:38:52 -04:00
Behdad Esfahbod 5c1c8c9c50 Make sure feature values don't leak out of their mask 2010-10-13 15:36:38 -04:00
Behdad Esfahbod 852912fc2d Fix applying default-value for features
Previously if a default global feature was overrided by a non-global
user feature, we were not setting any default mask for the feature,
essentially disabling the feature by default.  Fix that.
2010-10-13 15:34:50 -04:00
Behdad Esfahbod 2989be4919 Set user masks after complex masks 2010-10-13 15:18:29 -04:00
Behdad Esfahbod 3111b8a0d5 Fix stupid bug, oops 2010-10-13 10:41:53 -04:00
Behdad Esfahbod 758f68b860 Fix Arabic shaper
It's tested now.  It works!
2010-10-12 17:37:44 -04:00
Behdad Esfahbod 13403bc67a Hookup Arabic shaper!
Not tested yet.
2010-10-12 17:23:54 -04:00
Behdad Esfahbod 57ac0ecb78 Merge clearing masks and setting global masks 2010-10-12 17:07:02 -04:00
Behdad Esfahbod fc96596b7c Form clusters before setting masks 2010-10-12 17:00:40 -04:00
Behdad Esfahbod 1e80782244 Clear masks before setting them up, not after! 2010-10-12 17:00:07 -04:00
Behdad Esfahbod fd3d32d31c Add hb_ot_shape_execute()
Not public yet.
2010-10-12 16:57:47 -04:00
Behdad Esfahbod 49baa1f69e Add hb_ot_complex_shaper_t stuff and start hooking Arabic shaper up 2010-10-12 16:50:36 -04:00
Behdad Esfahbod 605ed468f3 Add hb_ot_shape_plan_t
This is the object that a separate plan/execute shaping API will use in
between the two stages.
2010-10-12 16:19:38 -04:00
Behdad Esfahbod 895fb5d364 Refactor, in a different direction 2010-10-12 16:00:21 -04:00
Behdad Esfahbod d2ba016ca1 More refactoring 2010-10-12 15:35:45 -04:00
Behdad Esfahbod 66e487dfbf Update Arabic shaping table to Unicode 6.0.0. 2010-10-12 13:51:19 -04:00