Commit Graph

160 Commits

Author SHA1 Message Date
Behdad Esfahbod 9a3b74884b Remove redundant check for FT_Face_GetCharVariantIndex
We require FreeType >= 2.8.3.  This symbol was introduced earlier
than that.
2014-12-28 17:27:39 -08:00
Behdad Esfahbod affacf2f37 [ft] Open blob in READONLY mode
HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE is deprecated and fairly
useless now.
2014-12-28 16:20:31 -08:00
Behdad Esfahbod 8afaf09687 [ft] Add NO_HINTING in a couple other places 2014-10-02 16:40:41 -04:00
Behdad Esfahbod 38fb30d742 Use atexit() only if it's safe to call from shared library
Apparently they are not (advertised as?) safe on BSD systems.
We ignore the case of static libraries.

Whitelisted on glibc, Android, and MSVC / mingw.

https://bugs.freedesktop.org/show_bug.cgi?id=82246
2014-08-06 13:34:49 -04:00
Behdad Esfahbod 83408cf804 Fix llvm warnings on Mac
Patch from Scott Fleischman.  Warnings were:

harfbuzz/src/hb-font-private.hh:121:42: Implicit conversion loses
integer precision: 'long long' to 'hb_position_t' (aka 'int')
harfbuzz/src/hb-font-private.hh:126:42: Implicit conversion loses
integer precision: 'long long' to 'hb_position_t' (aka 'int')
harfbuzz/src/hb-font-private.hh:400:85: Implicit conversion loses
integer precision: 'long long' to 'hb_position_t' (aka 'int')
harfbuzz/src/hb-ot-layout-common-private.hh:1115:37: Implicit conversion
loses integer precision: 'long long' to 'int'
harfbuzz/src/hb-ft.cc:421:97: Implicit conversion loses integer
precision: 'unsigned long long' to 'int'
harfbuzz/src/hb-ft.cc:422:97: Implicit conversion loses integer
precision: 'unsigned long long' to 'int'
2013-11-06 14:46:04 -05:00
Behdad Esfahbod 755b44cce6 [ft] Round metrics instead of truncate
Lohit-Punjabi has a upem of 769!  We were losing one unit in our
code, and FreeType is losing another one...  Test with U+0A06.
Has an advance of 854 in the font.  We were producing 852.
Now we do 853, which is what FreeType is telling us.
2013-10-18 12:03:01 +02:00
Behdad Esfahbod ace5c7eb4c [introspection] hb-ft annotations 2013-09-13 20:35:19 -04:00
Behdad Esfahbod e509d35cf1 [ft] hb_ft_get_glyph_from_name fails for the name of glyph id 0
Based on patch from Jonathan Kew, as reported on the mailing list.
2013-07-11 14:56:45 -04:00
Behdad Esfahbod 79d1007a50 If variation selector is not consumed by cmap, pass it on to GSUB
This changes the semantics of get_glyph() callback and expect that
callbacks return false if the requested variant is not available, and
then we will call them back with variation_selector=0 and will retain
the glyph for the selector in the glyph stream.

Apparently most Mongolian fonts implement the Mongolian Variation
Selectors using GSUB, not cmap.

https://bugs.freedesktop.org/show_bug.cgi?id=65258

Note that this doesn't fix the Mongolian shaping yet, because the way
that's implemented is that the, say, 'init' feature ligates the letter
and the variation-selector.  However, since currently the variation
selector doesn't have the 'init' mask on, it will not be matched...
2013-06-13 19:01:07 -04:00
Behdad Esfahbod 190e19e684 [ft] Remove TODO items that I'm not going to fix 2013-03-09 20:30:22 -05:00
Behdad Esfahbod 392ee97431 [ft] Remove TODO item re FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH
That flag is redundant, deprecated, and ignored since April 2011.
From FreeType git log:

commit 8c82ec5b17d0cfc9b0876a2d848acc207a62a25a
Author: Behdad Esfahbod <behdad@behdad.org>
Date:   Thu Apr 21 08:21:37 2011 +0200

    Always ignore global advance.

    This makes FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH redundant,
    deprecated, and ignored.  The new behavior is what every major user
    of FreeType has been requesting.  Global advance is broken in many
    CJK fonts.  Just ignoring it by default makes most sense.

    * src/truetype/ttdriver.c (tt_get_advances),
    src/truetype/ttgload.c (TT_Get_HMetrics, TT_Get_VMetrics,
    tt_get_metrics, compute_glyph_metrics, TT_Load_Glyph),
    src/truetype/ttgload.h: Implement it.

    * docs/CHANGES: Updated.
2013-03-09 20:27:55 -05:00
Behdad Esfahbod 5594c2d112 [FT] Just return if glyph name not found
The fallback happens in higher level already.  No need to do here.
2013-03-06 19:37:31 -05:00
Behdad Esfahbod e9171af55c Bug 60053 - hb-common.cc:181:6: warning: ‘void free_langs()’ defined but not used 2013-01-29 22:45:00 -05:00
Behdad Esfahbod d05ac7dc3f Fix hb-ft glyph name for broken fonts that return empty glyph names 2012-11-12 10:26:50 -08:00
Behdad Esfahbod 21756934a1 [OT] Implement fallback positioning
Implemented for Arabic, Hebrew, and generic marks.
Activated if no GPOS table present.
2012-08-08 01:20:45 -04:00
Behdad Esfahbod 271c8f8907 Minor 2012-07-13 09:32:30 -04:00
Behdad Esfahbod 2023e2b54d [ft] Disable ppem setting
The calculations were wrong.

FreeType makes it really hard to set size and ppem independently.
For now, disable it.  Need to come up with a fix later.
2012-07-11 19:01:26 -04:00
Behdad Esfahbod cdf7444505 [ft] Use unfitted kerning if x_ppem is zero 2012-07-11 18:52:39 -04:00
Behdad Esfahbod 0594a24484 Cleanup TRUE/FALSE vs true/false 2012-06-05 20:35:40 -04:00
Behdad Esfahbod f64b2ebf82 Remove last static initializer
We're free!  Lazy or immediate...
2012-06-05 20:15:27 -04:00
Behdad Esfahbod 04aed572f1 Make hb-ft static-initializer free 2012-06-05 18:45:36 -04:00
Behdad Esfahbod f06ab8a426 Better hide nil objects and make them const 2012-06-05 14:49:14 -04:00
Behdad Esfahbod bce095524b Add hb_font_get_glyph_name() and hb_font_get_glyph_from_name() 2012-05-28 10:45:50 -04:00
Behdad Esfahbod 323190c27b Minor 2012-04-12 12:29:10 -04:00
Behdad Esfahbod 0b7e4d9f20 [ft] FT_Get_Advance() for advance-width callbacks
Using graphite2's comparerenderer suggests that this makes hb-ft 15
times faster.  No caching layer needed anymore.
2011-08-15 20:41:59 +02:00
Behdad Esfahbod 553bc3de82 Minor 2011-08-15 16:21:06 +02:00
Behdad Esfahbod 254142bb67 [ft] FT_Select_Charmap() when we create face 2011-08-15 16:15:44 +02:00
Behdad Esfahbod 9527fb200f Fix missing return 2011-08-13 19:03:48 +02:00
Behdad Esfahbod 01ec13a1d9 Implement hb_ft_font_get_face 2011-08-10 22:00:35 +02:00
Behdad Esfahbod 13a601fe99 [FT] Don't make font immutable 2011-08-09 11:36:54 +02:00
Behdad Esfahbod 38b2118724 [API] Add hb_ft_font_set_funcs(), remove hb_ft_get_font_funcs()
Remove hb_ft_get_font_funcs() as it cannot be used by the user anyway.

Add hb_ft_font_set_funcs().  Which will make the font internally use
FreeType.  That is, no need for the font to have created using the
hb-ft API.  Just create using hb_face_create()/hb_font_create() and
then call this on the font (after having set font scale).  This
internally creates an FT_Face and attached to the font.
2011-08-09 11:10:32 +02:00
Behdad Esfahbod de1e1cf9bc [FT] Adapt to new face API 2011-08-09 00:19:38 +02:00
Behdad Esfahbod 3897335c76 [API] Sort out get_blob API
hb_face_get_blob() renamed to hb_face_reference_blob(), returns a
reference now.

hb_face_[sg]et_index() added.

hb_face_set_upem() added.
2011-08-08 23:37:41 +02:00
Behdad Esfahbod e715784be3 Rename get_table to reference_table in all API 2011-08-08 21:43:06 +02:00
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 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 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 190981851f Cosmetic 2011-05-17 23:27:22 -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 56d12e0356 Remove unnecessary TODO item 2011-05-16 16:01:58 -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 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 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 b9d975b931 [API] Pass down closure user_data to font funcs 2011-05-10 20:41:13 -04:00
Behdad Esfahbod d292885893 [ft] Fix font->face handling
Don't use _cached()
2011-05-03 01:03:53 -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 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 2409d5f8d7 Update Copyright headers 2011-04-21 17:14:28 -04:00
Behdad Esfahbod 783a7d6969 [TODO] Remove finished items 2011-04-21 16:03:59 -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 cc6d52279d De-C++ where possible
Helps with avoiding many "extern C" declarations in source files.
2010-07-23 15:00:13 -04:00
Behdad Esfahbod c442672ec2 Fix struct initializers 2010-05-24 18:02:32 +01:00
Behdad Esfahbod 750a229455 get_table() is allowed to return NULL. Use that to simplify code 2010-05-20 16:23:27 +01:00
Behdad Esfahbod 0a4399ca22 Fix scale issues
hb_font_set_scale() now sets the value to be used to represent a unit
pixel.  For example, if rendering a 10px font with a 26.6 representation,
you would set scale to (10 << 6).  For 10px in 16.16 you would set it to
(10 << 16).  This space should be the same space that the get_glyph_metrics
and get_kerning callbacks work in.
2010-05-19 15:45:06 -04:00
Behdad Esfahbod 22da7fd94d Rename a few files to be C++ sources
In anticipation for buffer revamp coming.
2010-05-12 18:23:21 -04:00