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harfbuzz/src/hb-ot-shape-complex-default.cc

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Minor
2011-07-08 04:35:17 +02:00
/*
[OT] Unbreak Thai shaping and fallback Arabic shaping The merger of normalizer and glyph-mapping broke shapers that modified text stream. Unbreak them by adding a new preprocess_text shaping stage that happens before normalizing/cmap and disallow setup_mask modification of actual text.
2012-08-12 00:34:13 +02:00
* Copyright © 2010,2012 Google, Inc.
Minor
2011-07-08 04:35:17 +02:00
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Behdad Esfahbod
*/
#include "hb-ot-shape-complex-private.hh"
[OT] Streamline complex shaper enumeration Add a shaper class struct.
2012-07-31 03:08:51 +02:00
const hb_ot_complex_shaper_t _hb_ot_complex_shaper_default =
Add simple Hangul shaper that recomposes Jamo when feasible Previously, we were NOT actually recomposing Hangul Jamo. We do now. The two lines in: test/shaping/texts/in-tree/shaper-default/script-hangul/misc/misc.txt Now render the same with the UnDotum.ttf font. Previously the second linle was rendering boxes. We can also start applying OpenType Jamo features later. At this time, I have no idea how the 'ljmo', 'vjmo', 'tjmo' features are supposed to work. Maybe someone can explain them to me?
2012-04-07 21:06:55 +02:00
{
[OT] Streamline complex shaper enumeration Add a shaper class struct.
2012-07-31 03:08:51 +02:00
"default",
[ot] Separate out hebrew and tibetan shapers from default Now default shaper is truly no-op.
2013-12-31 09:49:15 +01:00
NULL, /* collect_features */
[OT] Streamline complex shaper enumeration Add a shaper class struct.
2012-07-31 03:08:51 +02:00
NULL, /* override_features */
[OT] Add per-complex-shaper shape_plan data Hookup some Indic data to it. More to come.
2012-08-02 16:46:34 +02:00
NULL, /* data_create */
NULL, /* data_destroy */
[OT] Unbreak Thai shaping and fallback Arabic shaping The merger of normalizer and glyph-mapping broke shapers that modified text stream. Unbreak them by adding a new preprocess_text shaping stage that happens before normalizing/cmap and disallow setup_mask modification of actual text.
2012-08-12 00:34:13 +02:00
NULL, /* preprocess_text */
Add new shaper method postprocess_glyphs() Unused currently. To be used for Syriac stretch implementation. https://github.com/behdad/harfbuzz/issues/141
2015-11-05 22:24:15 +01:00
NULL, /* postprocess_glyphs */
[ot] Simplify normalization_preference again No shaper has more than one behavior re this, so no need for a callback.
2013-12-31 09:04:35 +01:00
HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT,
[Indic] Decompose Sinhala split matras the way old HarfBuzz / Pango did Had to do some refactoring to make this happen... Under uniscribe bug compatibility mode, we still plit them Uniscrie-style, but Jonathan and I convinced ourselves that there is no harm doing this the Unicode way. This change makes that happen, and unbreaks free Sinhala fonts.
2012-11-13 21:35:35 +01:00
NULL, /* decompose */
[ot] Separate out hebrew and tibetan shapers from default Now default shaper is truly no-op.
2013-12-31 09:49:15 +01:00
NULL, /* compose */
[OT] Streamline complex shaper enumeration Add a shaper class struct.
2012-07-31 03:08:51 +02:00
NULL, /* setup_masks */
Disable OTL processing for Hebrew if GPOS doesn't have Hebrew subtable New approach to fix this: https://github.com/behdad/harfbuzz/commit/69f9fbc4200442a35484d3c790ae8f4979be5d60 Previous approach was reverted as it was too broad. See context: https://github.com/behdad/harfbuzz/issues/347#issuecomment-267838368 With U+05E9,U+05B8,U+05C1,U+05DC and Arial Unicode, we now (correctly) disable GDEF and GPOS, so we get results very close to Uniscribe, but slightly different since our fallback position logic is not exactly the same: Before: [gid1166=3+991|gid1142=0+737|gid5798=0+1434] After: [gid1166=3+991|gid1142=0@402,-26+0|gid5798=0+1434] Uniscribe: [gid1166=3+991|gid1142=0@348,0+0|gid5798=0+1434]
2016-12-22 21:40:19 +01:00
NULL, /* disable_otl */
Change default mark advance zeroing behavior from Unicode to GDEF See thread at: https://lists.freedesktop.org/archives/harfbuzz/2016-February/005462.html
2016-02-10 12:10:15 +01:00
HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE,
Don't do fallback positioning for Indic and Thai shapers
2012-11-14 22:48:26 +01:00
true, /* fallback_position */
[OT] Streamline complex shaper enumeration Add a shaper class struct.
2012-07-31 03:08:51 +02:00
};