2008-01-24 09:11:09 +01:00
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/*
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2011-04-21 23:14:28 +02:00
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* Copyright © 1998-2004 David Turner and Werner Lemberg
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* Copyright © 2006 Behdad Esfahbod
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* Copyright © 2007,2008,2009 Red Hat, Inc.
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2013-05-03 23:49:44 +02:00
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* Copyright © 2012,2013 Google, Inc.
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2008-01-24 09:11:09 +01:00
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*
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2010-04-22 06:11:43 +02:00
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* This is part of HarfBuzz, a text shaping library.
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2008-01-24 09:11:09 +01:00
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Behdad Esfahbod
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2012-07-30 08:38:39 +02:00
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* Google Author(s): Behdad Esfahbod
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2008-01-24 09:11:09 +01:00
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*/
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2018-08-26 07:36:36 +02:00
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#include "hb-open-type.hh"
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#include "hb-ot-layout.hh"
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#include "hb-ot-map.hh"
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#include "hb-map.hh"
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2018-02-27 20:26:17 +01:00
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2011-08-17 14:19:59 +02:00
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#include "hb-ot-layout-gdef-table.hh"
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#include "hb-ot-layout-gsub-table.hh"
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#include "hb-ot-layout-gpos-table.hh"
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2018-05-04 03:03:27 +02:00
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// Just so we compile them; unused otherwise:
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#include "hb-ot-layout-base-table.hh"
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#include "hb-ot-layout-jstf-table.hh"
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2018-03-03 20:13:23 +01:00
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#include "hb-ot-color-colr-table.hh"
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#include "hb-ot-color-cpal-table.hh"
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2018-05-04 03:03:27 +02:00
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#include "hb-ot-color-sbix-table.hh"
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#include "hb-ot-color-svg-table.hh"
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#include "hb-ot-name-table.hh"
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2013-05-03 00:18:24 +02:00
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2008-01-24 12:03:45 +01:00
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2018-02-26 10:15:08 +01:00
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// static inline const OT::BASE&
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// _get_base (hb_face_t *face)
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// {
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2018-05-08 11:23:36 +02:00
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// if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::BASE);
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2018-08-16 05:12:25 +02:00
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// hb_ot_face_data_t *data = hb_ot_face_data (face);
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// return *(data->base.get ());
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2018-02-26 10:15:08 +01:00
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// }
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2018-02-26 01:32:17 +01:00
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2012-08-28 23:57:49 +02:00
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static inline const OT::GDEF&
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2009-08-04 03:40:20 +02:00
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_get_gdef (hb_face_t *face)
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{
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2018-05-08 11:23:36 +02:00
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if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::GDEF);
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2018-08-16 05:12:25 +02:00
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return *hb_ot_face_data (face)->table.GDEF;
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2009-08-04 03:40:20 +02:00
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}
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2012-08-28 23:57:49 +02:00
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static inline const OT::GSUB&
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2009-08-04 03:40:20 +02:00
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_get_gsub (hb_face_t *face)
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2008-01-24 09:11:09 +01:00
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{
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2018-05-08 11:23:36 +02:00
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if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::GSUB);
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2018-08-16 05:12:25 +02:00
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return *hb_ot_face_data (face)->table.GSUB;
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2008-01-24 09:11:09 +01:00
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}
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2012-08-28 23:57:49 +02:00
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static inline const OT::GPOS&
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2009-08-04 03:40:20 +02:00
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_get_gpos (hb_face_t *face)
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2009-07-26 01:09:01 +02:00
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{
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2018-05-08 11:23:36 +02:00
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if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::GPOS);
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2018-08-16 05:12:25 +02:00
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return *hb_ot_face_data (face)->table.GPOS;
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2009-07-26 01:09:01 +02:00
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}
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2008-01-25 01:13:50 +01:00
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/*
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* GDEF
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*/
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hb_bool_t
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2009-11-06 23:45:38 +01:00
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hb_ot_layout_has_glyph_classes (hb_face_t *face)
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2008-01-25 01:13:50 +01:00
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{
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2009-08-04 03:40:20 +02:00
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return _get_gdef (face).has_glyph_classes ();
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2008-01-25 01:13:50 +01:00
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}
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2015-06-01 13:22:01 +02:00
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/**
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2015-11-27 01:30:37 +01:00
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* hb_ot_layout_get_glyph_class:
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*
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2015-06-01 13:22:01 +02:00
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* Since: 0.9.7
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**/
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2012-11-16 22:34:29 +01:00
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hb_ot_layout_glyph_class_t
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hb_ot_layout_get_glyph_class (hb_face_t *face,
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hb_codepoint_t glyph)
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{
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return (hb_ot_layout_glyph_class_t) _get_gdef (face).get_glyph_class (glyph);
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}
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2010-11-03 20:28:56 +01:00
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2015-06-01 13:22:01 +02:00
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/**
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2015-11-27 01:30:37 +01:00
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* hb_ot_layout_get_glyphs_in_class:
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*
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2015-06-01 13:22:01 +02:00
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* Since: 0.9.7
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**/
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2012-11-16 22:53:40 +01:00
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void
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hb_ot_layout_get_glyphs_in_class (hb_face_t *face,
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hb_ot_layout_glyph_class_t klass,
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hb_set_t *glyphs /* OUT */)
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{
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return _get_gdef (face).get_glyphs_in_class (klass, glyphs);
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}
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2009-11-04 22:36:14 +01:00
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unsigned int
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2009-08-02 23:41:36 +02:00
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hb_ot_layout_get_attach_points (hb_face_t *face,
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2009-05-26 18:24:16 +02:00
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hb_codepoint_t glyph,
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2009-11-04 22:36:14 +01:00
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unsigned int start_offset,
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2009-05-26 18:24:16 +02:00
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unsigned int *point_count /* IN/OUT */,
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unsigned int *point_array /* OUT */)
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{
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2009-11-04 22:36:14 +01:00
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return _get_gdef (face).get_attach_points (glyph, start_offset, point_count, point_array);
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2009-05-26 18:40:10 +02:00
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}
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2009-11-04 22:36:14 +01:00
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unsigned int
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2010-10-27 18:32:02 +02:00
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hb_ot_layout_get_ligature_carets (hb_font_t *font,
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hb_direction_t direction,
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hb_codepoint_t glyph,
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unsigned int start_offset,
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unsigned int *caret_count /* IN/OUT */,
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2017-06-19 12:17:09 +02:00
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hb_position_t *caret_array /* OUT */)
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2009-05-26 18:40:10 +02:00
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{
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2011-05-11 06:02:02 +02:00
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return _get_gdef (font->face).get_lig_carets (font, direction, glyph, start_offset, caret_count, caret_array);
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2009-05-26 18:24:16 +02:00
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}
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2012-07-31 01:30:01 +02:00
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2008-01-28 11:58:50 +01:00
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/*
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* GSUB/GPOS
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*/
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2012-08-28 23:57:49 +02:00
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static const OT::GSUBGPOS&
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2009-08-04 03:40:20 +02:00
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get_gsubgpos_table (hb_face_t *face,
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hb_tag_t table_tag)
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2008-01-28 11:58:50 +01:00
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{
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2009-08-02 23:41:36 +02:00
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switch (table_tag) {
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2009-08-04 03:40:20 +02:00
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case HB_OT_TAG_GSUB: return _get_gsub (face);
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case HB_OT_TAG_GPOS: return _get_gpos (face);
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2018-05-08 11:23:36 +02:00
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default: return Null(OT::GSUBGPOS);
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2008-01-28 11:58:50 +01:00
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}
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}
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2009-11-04 22:36:14 +01:00
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unsigned int
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2009-08-08 01:46:30 +02:00
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hb_ot_layout_table_get_script_tags (hb_face_t *face,
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hb_tag_t table_tag,
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2009-11-04 22:36:14 +01:00
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unsigned int start_offset,
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2009-08-08 01:46:30 +02:00
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unsigned int *script_count /* IN/OUT */,
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hb_tag_t *script_tags /* OUT */)
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2008-01-28 11:58:50 +01:00
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{
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2012-08-28 23:57:49 +02:00
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const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
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2008-01-28 11:58:50 +01:00
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2009-11-04 22:36:14 +01:00
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return g.get_script_tags (start_offset, script_count, script_tags);
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2008-01-28 11:58:50 +01:00
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}
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2013-01-17 05:07:50 +01:00
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#define HB_OT_TAG_LATIN_SCRIPT HB_TAG ('l', 'a', 't', 'n')
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2008-01-28 11:58:50 +01:00
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hb_bool_t
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2009-08-02 23:41:36 +02:00
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hb_ot_layout_table_find_script (hb_face_t *face,
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hb_tag_t table_tag,
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hb_tag_t script_tag,
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unsigned int *script_index)
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2008-01-28 11:58:50 +01:00
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{
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2017-10-15 12:02:00 +02:00
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static_assert ((OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_SCRIPT_INDEX), "");
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2012-08-28 23:57:49 +02:00
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const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
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2008-01-28 11:58:50 +01:00
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if (g.find_script_index (script_tag, script_index))
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2012-06-06 02:35:40 +02:00
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return true;
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2008-01-28 11:58:50 +01:00
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/* try finding 'DFLT' */
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2009-11-05 01:45:39 +01:00
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if (g.find_script_index (HB_OT_TAG_DEFAULT_SCRIPT, script_index))
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2012-06-06 02:35:40 +02:00
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return false;
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2008-01-28 11:58:50 +01:00
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2010-09-28 22:25:23 +02:00
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/* try with 'dflt'; MS site has had typos and many fonts use it now :(.
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* including many versions of DejaVu Sans Mono! */
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2009-11-05 01:45:39 +01:00
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if (g.find_script_index (HB_OT_TAG_DEFAULT_LANGUAGE, script_index))
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2012-06-06 02:35:40 +02:00
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return false;
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2009-12-20 20:58:26 +01:00
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2013-01-17 05:07:50 +01:00
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/* try with 'latn'; some old fonts put their features there even though
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they're really trying to support Thai, for example :( */
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if (g.find_script_index (HB_OT_TAG_LATIN_SCRIPT, script_index))
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return false;
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2009-12-20 20:58:26 +01:00
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if (script_index) *script_index = HB_OT_LAYOUT_NO_SCRIPT_INDEX;
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2012-06-06 02:35:40 +02:00
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return false;
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2009-12-20 20:58:26 +01:00
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}
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hb_bool_t
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hb_ot_layout_table_choose_script (hb_face_t *face,
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hb_tag_t table_tag,
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const hb_tag_t *script_tags,
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2011-07-31 02:57:01 +02:00
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unsigned int *script_index,
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hb_tag_t *chosen_script)
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2009-12-20 20:58:26 +01:00
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{
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2017-10-15 12:02:00 +02:00
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static_assert ((OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_SCRIPT_INDEX), "");
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2012-08-28 23:57:49 +02:00
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const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
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2009-12-20 20:58:26 +01:00
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while (*script_tags)
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{
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2011-07-31 02:57:01 +02:00
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if (g.find_script_index (*script_tags, script_index)) {
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if (chosen_script)
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*chosen_script = *script_tags;
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2012-06-06 02:35:40 +02:00
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return true;
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2011-07-31 02:57:01 +02:00
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}
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2009-12-20 20:58:26 +01:00
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script_tags++;
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}
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/* try finding 'DFLT' */
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2011-07-31 02:57:01 +02:00
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if (g.find_script_index (HB_OT_TAG_DEFAULT_SCRIPT, script_index)) {
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if (chosen_script)
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*chosen_script = HB_OT_TAG_DEFAULT_SCRIPT;
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2012-06-06 02:35:40 +02:00
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return false;
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2011-07-31 02:57:01 +02:00
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}
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2009-12-20 20:58:26 +01:00
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/* try with 'dflt'; MS site has had typos and many fonts use it now :( */
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2011-07-31 02:57:01 +02:00
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if (g.find_script_index (HB_OT_TAG_DEFAULT_LANGUAGE, script_index)) {
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if (chosen_script)
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*chosen_script = HB_OT_TAG_DEFAULT_LANGUAGE;
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2012-06-06 02:35:40 +02:00
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return false;
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2011-07-31 02:57:01 +02:00
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}
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2008-01-28 11:58:50 +01:00
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2012-01-22 21:31:44 +01:00
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/* try with 'latn'; some old fonts put their features there even though
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they're really trying to support Thai, for example :( */
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if (g.find_script_index (HB_OT_TAG_LATIN_SCRIPT, script_index)) {
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if (chosen_script)
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*chosen_script = HB_OT_TAG_LATIN_SCRIPT;
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2012-06-06 02:35:40 +02:00
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return false;
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2012-01-22 21:31:44 +01:00
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}
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2008-01-28 11:58:50 +01:00
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if (script_index) *script_index = HB_OT_LAYOUT_NO_SCRIPT_INDEX;
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2011-07-31 02:57:01 +02:00
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if (chosen_script)
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*chosen_script = HB_OT_LAYOUT_NO_SCRIPT_INDEX;
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2012-06-06 02:35:40 +02:00
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return false;
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2008-01-28 11:58:50 +01:00
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}
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2009-11-04 22:36:14 +01:00
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unsigned int
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2009-08-08 01:46:30 +02:00
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hb_ot_layout_table_get_feature_tags (hb_face_t *face,
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hb_tag_t table_tag,
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2009-11-04 22:36:14 +01:00
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unsigned int start_offset,
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2009-08-08 01:46:30 +02:00
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unsigned int *feature_count /* IN/OUT */,
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hb_tag_t *feature_tags /* OUT */)
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2008-02-19 03:14:23 +01:00
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{
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2012-08-28 23:57:49 +02:00
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const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
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2008-02-19 03:14:23 +01:00
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2009-11-04 22:36:14 +01:00
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return g.get_feature_tags (start_offset, feature_count, feature_tags);
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2008-02-19 03:14:23 +01:00
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}
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2015-07-23 12:52:11 +02:00
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hb_bool_t
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hb_ot_layout_table_find_feature (hb_face_t *face,
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hb_tag_t table_tag,
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hb_tag_t feature_tag,
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unsigned int *feature_index)
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|
{
|
2017-10-15 12:02:00 +02:00
|
|
|
static_assert ((OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_FEATURE_INDEX), "");
|
2015-07-23 12:52:11 +02:00
|
|
|
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
|
|
|
|
|
|
|
|
unsigned int num_features = g.get_feature_count ();
|
|
|
|
for (unsigned int i = 0; i < num_features; i++)
|
|
|
|
{
|
|
|
|
if (feature_tag == g.get_feature_tag (i)) {
|
|
|
|
if (feature_index) *feature_index = i;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (feature_index) *feature_index = HB_OT_LAYOUT_NO_FEATURE_INDEX;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2008-02-19 03:14:23 +01:00
|
|
|
|
2009-11-04 22:36:14 +01:00
|
|
|
unsigned int
|
2009-08-08 01:46:30 +02:00
|
|
|
hb_ot_layout_script_get_language_tags (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int script_index,
|
2009-11-04 22:36:14 +01:00
|
|
|
unsigned int start_offset,
|
2009-08-08 01:46:30 +02:00
|
|
|
unsigned int *language_count /* IN/OUT */,
|
|
|
|
hb_tag_t *language_tags /* OUT */)
|
2008-01-28 11:58:50 +01:00
|
|
|
{
|
2012-08-28 23:57:49 +02:00
|
|
|
const OT::Script &s = get_gsubgpos_table (face, table_tag).get_script (script_index);
|
2008-01-28 11:58:50 +01:00
|
|
|
|
2009-11-04 22:36:14 +01:00
|
|
|
return s.get_lang_sys_tags (start_offset, language_count, language_tags);
|
2008-01-28 11:58:50 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
hb_bool_t
|
2009-08-02 23:41:36 +02:00
|
|
|
hb_ot_layout_script_find_language (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int script_index,
|
|
|
|
hb_tag_t language_tag,
|
|
|
|
unsigned int *language_index)
|
2008-01-28 11:58:50 +01:00
|
|
|
{
|
2017-10-15 12:02:00 +02:00
|
|
|
static_assert ((OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX), "");
|
2012-08-28 23:57:49 +02:00
|
|
|
const OT::Script &s = get_gsubgpos_table (face, table_tag).get_script (script_index);
|
2008-01-28 11:58:50 +01:00
|
|
|
|
2008-01-28 13:40:10 +01:00
|
|
|
if (s.find_lang_sys_index (language_tag, language_index))
|
2012-06-06 02:35:40 +02:00
|
|
|
return true;
|
2008-01-28 11:58:50 +01:00
|
|
|
|
|
|
|
/* try with 'dflt'; MS site has had typos and many fonts use it now :( */
|
2009-11-05 01:45:39 +01:00
|
|
|
if (s.find_lang_sys_index (HB_OT_TAG_DEFAULT_LANGUAGE, language_index))
|
2012-06-06 02:35:40 +02:00
|
|
|
return false;
|
2008-01-28 11:58:50 +01:00
|
|
|
|
2008-01-28 13:40:10 +01:00
|
|
|
if (language_index) *language_index = HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX;
|
2012-06-06 02:35:40 +02:00
|
|
|
return false;
|
2008-01-28 13:40:10 +01:00
|
|
|
}
|
2008-01-28 11:58:50 +01:00
|
|
|
|
2014-06-24 18:20:36 +02:00
|
|
|
hb_bool_t
|
|
|
|
hb_ot_layout_language_get_required_feature_index (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int script_index,
|
|
|
|
unsigned int language_index,
|
|
|
|
unsigned int *feature_index)
|
|
|
|
{
|
|
|
|
return hb_ot_layout_language_get_required_feature (face,
|
|
|
|
table_tag,
|
|
|
|
script_index,
|
|
|
|
language_index,
|
|
|
|
feature_index,
|
2017-10-15 12:11:08 +02:00
|
|
|
nullptr);
|
2014-06-24 18:20:36 +02:00
|
|
|
}
|
|
|
|
|
2015-06-01 13:22:01 +02:00
|
|
|
/**
|
2015-11-27 01:30:37 +01:00
|
|
|
* hb_ot_layout_language_get_required_feature:
|
|
|
|
*
|
2015-06-01 13:22:01 +02:00
|
|
|
* Since: 0.9.30
|
|
|
|
**/
|
2008-01-28 13:40:10 +01:00
|
|
|
hb_bool_t
|
2014-04-27 15:05:24 +02:00
|
|
|
hb_ot_layout_language_get_required_feature (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int script_index,
|
|
|
|
unsigned int language_index,
|
|
|
|
unsigned int *feature_index,
|
|
|
|
hb_tag_t *feature_tag)
|
2008-01-28 13:40:10 +01:00
|
|
|
{
|
2014-04-27 15:05:24 +02:00
|
|
|
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
|
|
|
|
const OT::LangSys &l = g.get_script (script_index).get_lang_sys (language_index);
|
2008-01-28 11:58:50 +01:00
|
|
|
|
2014-04-27 15:05:24 +02:00
|
|
|
unsigned int index = l.get_required_feature_index ();
|
|
|
|
if (feature_index) *feature_index = index;
|
|
|
|
if (feature_tag) *feature_tag = g.get_feature_tag (index);
|
2008-01-28 11:58:50 +01:00
|
|
|
|
2008-01-28 13:40:10 +01:00
|
|
|
return l.has_required_feature ();
|
|
|
|
}
|
2008-01-28 11:58:50 +01:00
|
|
|
|
2018-07-31 03:10:43 +02:00
|
|
|
static void
|
|
|
|
_hb_ot_layout_language_add_feature_indexes_to (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int script_index,
|
|
|
|
unsigned int language_index,
|
|
|
|
hb_set_t *feature_indexes /* OUT */)
|
|
|
|
{
|
|
|
|
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
|
|
|
|
const OT::LangSys &l = g.get_script (script_index).get_lang_sys (language_index);
|
|
|
|
l.add_feature_indexes_to (feature_indexes);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-11-04 22:36:14 +01:00
|
|
|
unsigned int
|
2009-08-08 01:46:30 +02:00
|
|
|
hb_ot_layout_language_get_feature_indexes (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int script_index,
|
|
|
|
unsigned int language_index,
|
2009-11-04 22:36:14 +01:00
|
|
|
unsigned int start_offset,
|
2009-08-08 01:46:30 +02:00
|
|
|
unsigned int *feature_count /* IN/OUT */,
|
|
|
|
unsigned int *feature_indexes /* OUT */)
|
2009-08-02 23:41:36 +02:00
|
|
|
{
|
2012-08-28 23:57:49 +02:00
|
|
|
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
|
|
|
|
const OT::LangSys &l = g.get_script (script_index).get_lang_sys (language_index);
|
2008-01-28 13:40:10 +01:00
|
|
|
|
2009-11-04 22:36:14 +01:00
|
|
|
return l.get_feature_indexes (start_offset, feature_count, feature_indexes);
|
2008-02-19 03:14:23 +01:00
|
|
|
}
|
|
|
|
|
2009-11-04 22:36:14 +01:00
|
|
|
unsigned int
|
2009-08-08 01:46:30 +02:00
|
|
|
hb_ot_layout_language_get_feature_tags (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int script_index,
|
|
|
|
unsigned int language_index,
|
2009-11-04 22:36:14 +01:00
|
|
|
unsigned int start_offset,
|
2009-08-08 01:46:30 +02:00
|
|
|
unsigned int *feature_count /* IN/OUT */,
|
|
|
|
hb_tag_t *feature_tags /* OUT */)
|
2009-08-02 23:41:36 +02:00
|
|
|
{
|
2012-08-28 23:57:49 +02:00
|
|
|
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
|
|
|
|
const OT::LangSys &l = g.get_script (script_index).get_lang_sys (language_index);
|
2008-01-28 13:40:10 +01:00
|
|
|
|
2017-10-15 12:02:00 +02:00
|
|
|
static_assert ((sizeof (unsigned int) == sizeof (hb_tag_t)), "");
|
2009-11-04 22:36:14 +01:00
|
|
|
unsigned int ret = l.get_feature_indexes (start_offset, feature_count, (unsigned int *) feature_tags);
|
2009-08-08 01:46:30 +02:00
|
|
|
|
2009-08-27 07:32:17 +02:00
|
|
|
if (feature_tags) {
|
|
|
|
unsigned int count = *feature_count;
|
|
|
|
for (unsigned int i = 0; i < count; i++)
|
|
|
|
feature_tags[i] = g.get_feature_tag ((unsigned int) feature_tags[i]);
|
|
|
|
}
|
2009-08-08 01:46:30 +02:00
|
|
|
|
|
|
|
return ret;
|
2008-01-28 13:40:10 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
hb_bool_t
|
2009-08-02 23:41:36 +02:00
|
|
|
hb_ot_layout_language_find_feature (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int script_index,
|
|
|
|
unsigned int language_index,
|
|
|
|
hb_tag_t feature_tag,
|
|
|
|
unsigned int *feature_index)
|
2008-01-28 13:40:10 +01:00
|
|
|
{
|
2017-10-15 12:02:00 +02:00
|
|
|
static_assert ((OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_FEATURE_INDEX), "");
|
2012-08-28 23:57:49 +02:00
|
|
|
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
|
|
|
|
const OT::LangSys &l = g.get_script (script_index).get_lang_sys (language_index);
|
2008-01-28 13:40:10 +01:00
|
|
|
|
2009-05-17 10:59:56 +02:00
|
|
|
unsigned int num_features = l.get_feature_count ();
|
|
|
|
for (unsigned int i = 0; i < num_features; i++) {
|
2008-01-28 13:40:10 +01:00
|
|
|
unsigned int f_index = l.get_feature_index (i);
|
|
|
|
|
|
|
|
if (feature_tag == g.get_feature_tag (f_index)) {
|
|
|
|
if (feature_index) *feature_index = f_index;
|
2012-06-06 02:35:40 +02:00
|
|
|
return true;
|
2008-01-28 13:40:10 +01:00
|
|
|
}
|
|
|
|
}
|
2008-01-28 11:58:50 +01:00
|
|
|
|
2008-01-28 13:40:10 +01:00
|
|
|
if (feature_index) *feature_index = HB_OT_LAYOUT_NO_FEATURE_INDEX;
|
2012-06-06 02:35:40 +02:00
|
|
|
return false;
|
2008-01-28 11:58:50 +01:00
|
|
|
}
|
2008-02-19 03:14:23 +01:00
|
|
|
|
2015-06-01 13:22:01 +02:00
|
|
|
/**
|
2015-12-28 23:23:24 +01:00
|
|
|
* hb_ot_layout_feature_get_lookups:
|
|
|
|
*
|
2015-06-01 13:22:01 +02:00
|
|
|
* Since: 0.9.7
|
|
|
|
**/
|
2009-11-04 22:36:14 +01:00
|
|
|
unsigned int
|
2012-11-16 03:39:46 +01:00
|
|
|
hb_ot_layout_feature_get_lookups (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int feature_index,
|
|
|
|
unsigned int start_offset,
|
|
|
|
unsigned int *lookup_count /* IN/OUT */,
|
|
|
|
unsigned int *lookup_indexes /* OUT */)
|
2008-02-19 03:14:23 +01:00
|
|
|
{
|
2016-09-10 12:53:11 +02:00
|
|
|
return hb_ot_layout_feature_with_variations_get_lookups (face,
|
|
|
|
table_tag,
|
|
|
|
feature_index,
|
|
|
|
HB_OT_LAYOUT_NO_VARIATIONS_INDEX,
|
|
|
|
start_offset,
|
|
|
|
lookup_count,
|
|
|
|
lookup_indexes);
|
2008-02-19 03:14:23 +01:00
|
|
|
}
|
|
|
|
|
2015-06-01 13:22:01 +02:00
|
|
|
/**
|
2015-12-28 23:23:24 +01:00
|
|
|
* hb_ot_layout_table_get_lookup_count:
|
|
|
|
*
|
2015-06-01 13:22:01 +02:00
|
|
|
* Since: 0.9.22
|
|
|
|
**/
|
2013-10-03 20:54:50 +02:00
|
|
|
unsigned int
|
|
|
|
hb_ot_layout_table_get_lookup_count (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag)
|
|
|
|
{
|
2017-12-01 21:36:26 +01:00
|
|
|
if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return 0;
|
2013-10-03 20:54:50 +02:00
|
|
|
switch (table_tag)
|
|
|
|
{
|
|
|
|
case HB_OT_TAG_GSUB:
|
|
|
|
{
|
2018-08-16 05:12:25 +02:00
|
|
|
return hb_ot_face_data (face)->gsub_lookup_count;
|
2013-10-03 20:54:50 +02:00
|
|
|
}
|
|
|
|
case HB_OT_TAG_GPOS:
|
|
|
|
{
|
2018-08-16 05:12:25 +02:00
|
|
|
return hb_ot_face_data (face)->gpos_lookup_count;
|
2013-10-03 20:54:50 +02:00
|
|
|
}
|
|
|
|
}
|
2013-10-14 13:06:36 +02:00
|
|
|
return 0;
|
2013-10-03 20:54:50 +02:00
|
|
|
}
|
|
|
|
|
2012-11-24 08:31:02 +01:00
|
|
|
static void
|
|
|
|
_hb_ot_layout_collect_lookups_lookups (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int feature_index,
|
|
|
|
hb_set_t *lookup_indexes /* OUT */)
|
|
|
|
{
|
|
|
|
unsigned int lookup_indices[32];
|
|
|
|
unsigned int offset, len;
|
|
|
|
|
|
|
|
offset = 0;
|
|
|
|
do {
|
|
|
|
len = ARRAY_LENGTH (lookup_indices);
|
|
|
|
hb_ot_layout_feature_get_lookups (face,
|
|
|
|
table_tag,
|
|
|
|
feature_index,
|
|
|
|
offset, &len,
|
|
|
|
lookup_indices);
|
|
|
|
|
|
|
|
for (unsigned int i = 0; i < len; i++)
|
|
|
|
lookup_indexes->add (lookup_indices[i]);
|
|
|
|
|
|
|
|
offset += len;
|
|
|
|
} while (len == ARRAY_LENGTH (lookup_indices));
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2018-07-31 02:17:43 +02:00
|
|
|
_hb_ot_layout_collect_features_features (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int script_index,
|
|
|
|
unsigned int language_index,
|
|
|
|
const hb_tag_t *features,
|
|
|
|
hb_set_t *feature_indexes /* OUT */)
|
2012-11-24 08:31:02 +01:00
|
|
|
{
|
|
|
|
if (!features)
|
|
|
|
{
|
2013-06-27 02:14:18 +02:00
|
|
|
unsigned int required_feature_index;
|
2014-04-27 15:05:24 +02:00
|
|
|
if (hb_ot_layout_language_get_required_feature (face,
|
|
|
|
table_tag,
|
|
|
|
script_index,
|
|
|
|
language_index,
|
|
|
|
&required_feature_index,
|
2018-07-31 02:17:43 +02:00
|
|
|
nullptr))
|
|
|
|
feature_indexes->add (required_feature_index);
|
2013-06-27 02:14:18 +02:00
|
|
|
|
2012-11-24 08:31:02 +01:00
|
|
|
/* All features */
|
2018-07-31 03:10:43 +02:00
|
|
|
_hb_ot_layout_language_add_feature_indexes_to (face,
|
|
|
|
table_tag,
|
|
|
|
script_index,
|
|
|
|
language_index,
|
|
|
|
feature_indexes);
|
2013-01-03 07:04:40 +01:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2012-11-24 08:31:02 +01:00
|
|
|
for (; *features; features++)
|
|
|
|
{
|
|
|
|
unsigned int feature_index;
|
2013-01-03 07:00:23 +01:00
|
|
|
if (hb_ot_layout_language_find_feature (face,
|
|
|
|
table_tag,
|
|
|
|
script_index,
|
|
|
|
language_index,
|
|
|
|
*features,
|
|
|
|
&feature_index))
|
2018-07-31 02:17:43 +02:00
|
|
|
feature_indexes->add (feature_index);
|
2012-11-24 08:31:02 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2018-07-31 02:17:43 +02:00
|
|
|
_hb_ot_layout_collect_features_languages (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int script_index,
|
|
|
|
const hb_tag_t *languages,
|
|
|
|
const hb_tag_t *features,
|
|
|
|
hb_set_t *feature_indexes /* OUT */)
|
2012-11-24 08:31:02 +01:00
|
|
|
{
|
2018-07-31 02:17:43 +02:00
|
|
|
_hb_ot_layout_collect_features_features (face,
|
|
|
|
table_tag,
|
|
|
|
script_index,
|
|
|
|
HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX,
|
|
|
|
features,
|
|
|
|
feature_indexes);
|
2013-01-03 07:07:16 +01:00
|
|
|
|
2012-11-24 08:31:02 +01:00
|
|
|
if (!languages)
|
|
|
|
{
|
|
|
|
/* All languages */
|
2013-01-03 07:00:23 +01:00
|
|
|
unsigned int count = hb_ot_layout_script_get_language_tags (face,
|
|
|
|
table_tag,
|
|
|
|
script_index,
|
2017-10-15 12:11:08 +02:00
|
|
|
0, nullptr, nullptr);
|
2012-11-24 08:31:02 +01:00
|
|
|
for (unsigned int language_index = 0; language_index < count; language_index++)
|
2018-07-31 02:17:43 +02:00
|
|
|
_hb_ot_layout_collect_features_features (face,
|
|
|
|
table_tag,
|
|
|
|
script_index,
|
|
|
|
language_index,
|
|
|
|
features,
|
|
|
|
feature_indexes);
|
2013-01-03 07:04:40 +01:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2012-11-24 08:31:02 +01:00
|
|
|
for (; *languages; languages++)
|
|
|
|
{
|
|
|
|
unsigned int language_index;
|
2013-01-03 07:00:23 +01:00
|
|
|
if (hb_ot_layout_script_find_language (face,
|
|
|
|
table_tag,
|
|
|
|
script_index,
|
|
|
|
*languages,
|
|
|
|
&language_index))
|
2018-07-31 02:17:43 +02:00
|
|
|
_hb_ot_layout_collect_features_features (face,
|
|
|
|
table_tag,
|
|
|
|
script_index,
|
|
|
|
language_index,
|
|
|
|
features,
|
|
|
|
feature_indexes);
|
2012-11-24 08:31:02 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-06-01 13:22:01 +02:00
|
|
|
/**
|
2018-07-31 03:10:43 +02:00
|
|
|
* hb_ot_layout_collect_features:
|
2015-12-28 23:23:24 +01:00
|
|
|
*
|
2018-08-01 23:51:51 +02:00
|
|
|
* Since: 1.8.5
|
2015-06-01 13:22:01 +02:00
|
|
|
**/
|
2012-11-24 08:31:02 +01:00
|
|
|
void
|
2018-07-31 02:17:43 +02:00
|
|
|
hb_ot_layout_collect_features (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
const hb_tag_t *scripts,
|
|
|
|
const hb_tag_t *languages,
|
|
|
|
const hb_tag_t *features,
|
|
|
|
hb_set_t *feature_indexes /* OUT */)
|
2012-11-24 08:31:02 +01:00
|
|
|
{
|
|
|
|
if (!scripts)
|
|
|
|
{
|
|
|
|
/* All scripts */
|
2013-01-03 07:00:23 +01:00
|
|
|
unsigned int count = hb_ot_layout_table_get_script_tags (face,
|
|
|
|
table_tag,
|
2017-10-15 12:11:08 +02:00
|
|
|
0, nullptr, nullptr);
|
2012-11-24 08:31:02 +01:00
|
|
|
for (unsigned int script_index = 0; script_index < count; script_index++)
|
2018-07-31 02:17:43 +02:00
|
|
|
_hb_ot_layout_collect_features_languages (face,
|
|
|
|
table_tag,
|
|
|
|
script_index,
|
|
|
|
languages,
|
|
|
|
features,
|
|
|
|
feature_indexes);
|
2013-01-03 07:04:40 +01:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2012-11-24 08:31:02 +01:00
|
|
|
for (; *scripts; scripts++)
|
|
|
|
{
|
|
|
|
unsigned int script_index;
|
2013-01-03 07:00:23 +01:00
|
|
|
if (hb_ot_layout_table_find_script (face,
|
|
|
|
table_tag,
|
|
|
|
*scripts,
|
|
|
|
&script_index))
|
2018-07-31 02:17:43 +02:00
|
|
|
_hb_ot_layout_collect_features_languages (face,
|
|
|
|
table_tag,
|
|
|
|
script_index,
|
|
|
|
languages,
|
|
|
|
features,
|
|
|
|
feature_indexes);
|
2012-11-24 08:31:02 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2018-07-31 02:17:43 +02:00
|
|
|
/**
|
|
|
|
* hb_ot_layout_collect_lookups:
|
|
|
|
*
|
|
|
|
* Since: 0.9.8
|
|
|
|
**/
|
|
|
|
void
|
|
|
|
hb_ot_layout_collect_lookups (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
const hb_tag_t *scripts,
|
|
|
|
const hb_tag_t *languages,
|
|
|
|
const hb_tag_t *features,
|
|
|
|
hb_set_t *lookup_indexes /* OUT */)
|
|
|
|
{
|
|
|
|
hb_auto_t<hb_set_t> feature_indexes;
|
|
|
|
hb_ot_layout_collect_features (face, table_tag, scripts, languages, features, &feature_indexes);
|
|
|
|
for (hb_codepoint_t feature_index = HB_SET_VALUE_INVALID; hb_set_next (&feature_indexes, &feature_index);)
|
|
|
|
_hb_ot_layout_collect_lookups_lookups (face, table_tag, feature_index, lookup_indexes);
|
|
|
|
}
|
|
|
|
|
2015-06-01 13:22:01 +02:00
|
|
|
/**
|
2015-12-28 23:23:24 +01:00
|
|
|
* hb_ot_layout_lookup_collect_glyphs:
|
|
|
|
*
|
2015-06-01 13:22:01 +02:00
|
|
|
* Since: 0.9.7
|
|
|
|
**/
|
2012-11-17 04:07:06 +01:00
|
|
|
void
|
|
|
|
hb_ot_layout_lookup_collect_glyphs (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int lookup_index,
|
2017-10-15 12:11:08 +02:00
|
|
|
hb_set_t *glyphs_before, /* OUT. May be nullptr */
|
|
|
|
hb_set_t *glyphs_input, /* OUT. May be nullptr */
|
|
|
|
hb_set_t *glyphs_after, /* OUT. May be nullptr */
|
|
|
|
hb_set_t *glyphs_output /* OUT. May be nullptr */)
|
2012-11-17 04:07:06 +01:00
|
|
|
{
|
|
|
|
if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return;
|
|
|
|
|
2013-01-03 07:00:23 +01:00
|
|
|
OT::hb_collect_glyphs_context_t c (face,
|
|
|
|
glyphs_before,
|
|
|
|
glyphs_input,
|
|
|
|
glyphs_after,
|
|
|
|
glyphs_output);
|
2012-11-17 04:07:06 +01:00
|
|
|
|
2013-01-03 07:04:40 +01:00
|
|
|
switch (table_tag)
|
|
|
|
{
|
2012-11-17 04:07:06 +01:00
|
|
|
case HB_OT_TAG_GSUB:
|
|
|
|
{
|
2018-08-16 05:12:25 +02:00
|
|
|
const OT::SubstLookup& l = hb_ot_face_data (face)->table.GSUB->get_lookup (lookup_index);
|
2013-05-03 23:33:16 +02:00
|
|
|
l.collect_glyphs (&c);
|
2012-11-17 04:07:06 +01:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
case HB_OT_TAG_GPOS:
|
|
|
|
{
|
2018-08-16 05:12:25 +02:00
|
|
|
const OT::PosLookup& l = hb_ot_face_data (face)->table.GPOS->get_lookup (lookup_index);
|
2013-05-03 23:33:16 +02:00
|
|
|
l.collect_glyphs (&c);
|
2012-11-17 04:07:06 +01:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-04-16 01:50:16 +02:00
|
|
|
|
2016-09-10 12:32:39 +02:00
|
|
|
/* Variations support */
|
|
|
|
|
|
|
|
hb_bool_t
|
|
|
|
hb_ot_layout_table_find_feature_variations (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
const int *coords,
|
|
|
|
unsigned int num_coords,
|
|
|
|
unsigned int *variations_index /* out */)
|
|
|
|
{
|
|
|
|
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
|
|
|
|
|
|
|
|
return g.find_variations_index (coords, num_coords, variations_index);
|
|
|
|
}
|
|
|
|
|
2016-09-10 12:53:11 +02:00
|
|
|
unsigned int
|
|
|
|
hb_ot_layout_feature_with_variations_get_lookups (hb_face_t *face,
|
|
|
|
hb_tag_t table_tag,
|
|
|
|
unsigned int feature_index,
|
|
|
|
unsigned int variations_index,
|
|
|
|
unsigned int start_offset,
|
|
|
|
unsigned int *lookup_count /* IN/OUT */,
|
|
|
|
unsigned int *lookup_indexes /* OUT */)
|
|
|
|
{
|
2017-10-15 12:02:00 +02:00
|
|
|
static_assert ((OT::FeatureVariations::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_VARIATIONS_INDEX), "");
|
2016-09-10 12:53:11 +02:00
|
|
|
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
|
|
|
|
|
|
|
|
const OT::Feature &f = g.get_feature_variation (feature_index, variations_index);
|
|
|
|
|
|
|
|
return f.get_lookup_indexes (start_offset, lookup_count, lookup_indexes);
|
|
|
|
}
|
|
|
|
|
2016-09-10 12:32:39 +02:00
|
|
|
|
2009-04-16 01:50:16 +02:00
|
|
|
/*
|
2012-08-28 23:57:49 +02:00
|
|
|
* OT::GSUB
|
2009-04-16 01:50:16 +02:00
|
|
|
*/
|
|
|
|
|
|
|
|
hb_bool_t
|
2009-08-02 23:41:36 +02:00
|
|
|
hb_ot_layout_has_substitution (hb_face_t *face)
|
|
|
|
{
|
2018-08-06 15:30:12 +02:00
|
|
|
return _get_gsub (face).has_data ();
|
2009-08-02 23:41:36 +02:00
|
|
|
}
|
|
|
|
|
2015-06-01 13:22:01 +02:00
|
|
|
/**
|
2015-12-28 23:23:24 +01:00
|
|
|
* hb_ot_layout_lookup_would_substitute:
|
|
|
|
*
|
2015-06-01 13:22:01 +02:00
|
|
|
* Since: 0.9.7
|
|
|
|
**/
|
2012-07-19 20:35:23 +02:00
|
|
|
hb_bool_t
|
2012-11-15 23:57:31 +01:00
|
|
|
hb_ot_layout_lookup_would_substitute (hb_face_t *face,
|
2012-08-23 22:22:28 +02:00
|
|
|
unsigned int lookup_index,
|
2012-07-19 20:35:23 +02:00
|
|
|
const hb_codepoint_t *glyphs,
|
|
|
|
unsigned int glyphs_length,
|
2012-08-23 22:22:28 +02:00
|
|
|
hb_bool_t zero_context)
|
2012-07-19 20:35:23 +02:00
|
|
|
{
|
2012-08-02 10:00:31 +02:00
|
|
|
if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return false;
|
2012-11-15 23:57:31 +01:00
|
|
|
return hb_ot_layout_lookup_would_substitute_fast (face, lookup_index, glyphs, glyphs_length, zero_context);
|
2012-07-19 20:35:23 +02:00
|
|
|
}
|
|
|
|
|
2012-07-30 08:38:39 +02:00
|
|
|
hb_bool_t
|
2012-11-15 23:57:31 +01:00
|
|
|
hb_ot_layout_lookup_would_substitute_fast (hb_face_t *face,
|
2012-08-23 22:22:28 +02:00
|
|
|
unsigned int lookup_index,
|
2012-07-30 08:38:39 +02:00
|
|
|
const hb_codepoint_t *glyphs,
|
|
|
|
unsigned int glyphs_length,
|
2012-08-23 22:22:28 +02:00
|
|
|
hb_bool_t zero_context)
|
2012-07-30 08:38:39 +02:00
|
|
|
{
|
2018-08-16 05:12:25 +02:00
|
|
|
if (unlikely (lookup_index >= hb_ot_face_data (face)->gsub_lookup_count)) return false;
|
2015-11-27 01:22:22 +01:00
|
|
|
OT::hb_would_apply_context_t c (face, glyphs, glyphs_length, (bool) zero_context);
|
2012-09-04 21:15:19 +02:00
|
|
|
|
2018-08-16 05:12:25 +02:00
|
|
|
const OT::SubstLookup& l = hb_ot_face_data (face)->table.GSUB->get_lookup (lookup_index);
|
2012-09-04 21:15:19 +02:00
|
|
|
|
2018-08-16 05:12:25 +02:00
|
|
|
return l.would_apply (&c, &hb_ot_face_data (face)->gsub_accels[lookup_index]);
|
2012-07-30 08:38:39 +02:00
|
|
|
}
|
|
|
|
|
2011-05-12 04:33:13 +02:00
|
|
|
void
|
2012-08-02 14:36:40 +02:00
|
|
|
hb_ot_layout_substitute_start (hb_font_t *font, hb_buffer_t *buffer)
|
2011-05-12 04:33:13 +02:00
|
|
|
{
|
2012-08-28 23:57:49 +02:00
|
|
|
OT::GSUB::substitute_start (font, buffer);
|
2011-05-12 04:33:13 +02:00
|
|
|
}
|
|
|
|
|
2015-06-01 13:22:01 +02:00
|
|
|
/**
|
2015-12-28 23:23:24 +01:00
|
|
|
* hb_ot_layout_lookup_substitute_closure:
|
|
|
|
*
|
2015-06-01 13:22:01 +02:00
|
|
|
* Since: 0.9.7
|
|
|
|
**/
|
2012-04-24 05:03:12 +02:00
|
|
|
void
|
2012-11-15 23:57:31 +01:00
|
|
|
hb_ot_layout_lookup_substitute_closure (hb_face_t *face,
|
2012-08-23 22:22:28 +02:00
|
|
|
unsigned int lookup_index,
|
|
|
|
hb_set_t *glyphs)
|
2012-04-23 19:04:38 +02:00
|
|
|
{
|
2018-06-06 02:14:42 +02:00
|
|
|
hb_auto_t<hb_map_t> done_lookups;
|
|
|
|
OT::hb_closure_context_t c (face, glyphs, &done_lookups);
|
2012-11-23 23:55:40 +01:00
|
|
|
|
|
|
|
const OT::SubstLookup& l = _get_gsub (face).get_lookup (lookup_index);
|
|
|
|
|
2018-06-06 02:14:42 +02:00
|
|
|
l.closure (&c, lookup_index);
|
2012-04-23 19:04:38 +02:00
|
|
|
}
|
2009-08-08 01:46:30 +02:00
|
|
|
|
2018-06-07 01:02:51 +02:00
|
|
|
/**
|
|
|
|
* hb_ot_layout_lookups_substitute_closure:
|
|
|
|
*
|
|
|
|
* Compute the transitive closure of glyphs needed for all of the
|
|
|
|
* provided lookups.
|
|
|
|
*
|
|
|
|
* Since: 1.8.1
|
|
|
|
**/
|
|
|
|
void
|
|
|
|
hb_ot_layout_lookups_substitute_closure (hb_face_t *face,
|
|
|
|
const hb_set_t *lookups,
|
|
|
|
hb_set_t *glyphs)
|
|
|
|
{
|
|
|
|
hb_auto_t<hb_map_t> done_lookups;
|
|
|
|
OT::hb_closure_context_t c (face, glyphs, &done_lookups);
|
|
|
|
const OT::GSUB& gsub = _get_gsub (face);
|
|
|
|
|
2018-07-24 00:37:18 +02:00
|
|
|
unsigned int iteration_count = 0;
|
2018-06-07 01:02:51 +02:00
|
|
|
unsigned int glyphs_length;
|
|
|
|
do
|
|
|
|
{
|
|
|
|
glyphs_length = glyphs->get_population ();
|
2018-06-07 23:32:34 +02:00
|
|
|
if (lookups != nullptr)
|
|
|
|
{
|
|
|
|
for (hb_codepoint_t lookup_index = HB_SET_VALUE_INVALID; hb_set_next (lookups, &lookup_index);)
|
|
|
|
gsub.get_lookup (lookup_index).closure (&c, lookup_index);
|
2018-06-12 04:02:38 +02:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2018-06-07 23:32:34 +02:00
|
|
|
for (unsigned int i = 0; i < gsub.get_lookup_count (); i++)
|
|
|
|
gsub.get_lookup (i).closure (&c, i);
|
|
|
|
}
|
2018-07-24 00:37:18 +02:00
|
|
|
iteration_count++;
|
|
|
|
} while (iteration_count <= HB_CLOSURE_MAX_STAGES
|
|
|
|
&& glyphs_length != glyphs->get_population ());
|
2018-06-07 01:02:51 +02:00
|
|
|
}
|
|
|
|
|
2009-05-18 23:43:49 +02:00
|
|
|
/*
|
2012-08-28 23:57:49 +02:00
|
|
|
* OT::GPOS
|
2009-05-18 23:43:49 +02:00
|
|
|
*/
|
|
|
|
|
|
|
|
hb_bool_t
|
2009-08-02 23:41:36 +02:00
|
|
|
hb_ot_layout_has_positioning (hb_face_t *face)
|
|
|
|
{
|
2018-08-06 15:30:12 +02:00
|
|
|
return _get_gpos (face).has_data ();
|
2009-08-02 23:41:36 +02:00
|
|
|
}
|
|
|
|
|
2011-04-16 00:59:56 +02:00
|
|
|
void
|
2012-07-31 01:30:01 +02:00
|
|
|
hb_ot_layout_position_start (hb_font_t *font, hb_buffer_t *buffer)
|
2011-04-16 00:59:56 +02:00
|
|
|
{
|
2012-08-28 23:57:49 +02:00
|
|
|
OT::GPOS::position_start (font, buffer);
|
2011-04-16 00:59:56 +02:00
|
|
|
}
|
|
|
|
|
2009-11-06 22:47:31 +01:00
|
|
|
void
|
2016-02-11 10:34:28 +01:00
|
|
|
hb_ot_layout_position_finish_advances (hb_font_t *font, hb_buffer_t *buffer)
|
|
|
|
{
|
|
|
|
OT::GPOS::position_finish_advances (font, buffer);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
hb_ot_layout_position_finish_offsets (hb_font_t *font, hb_buffer_t *buffer)
|
2009-11-06 22:47:31 +01:00
|
|
|
{
|
2016-02-11 10:34:28 +01:00
|
|
|
OT::GPOS::position_finish_offsets (font, buffer);
|
2009-11-06 22:47:31 +01:00
|
|
|
}
|
2012-11-26 13:02:31 +01:00
|
|
|
|
2015-06-01 13:22:01 +02:00
|
|
|
/**
|
2015-12-28 23:23:24 +01:00
|
|
|
* hb_ot_layout_get_size_params:
|
|
|
|
*
|
2015-09-03 13:23:22 +02:00
|
|
|
* Since: 0.9.10
|
2015-06-01 13:22:01 +02:00
|
|
|
**/
|
2012-11-26 13:02:31 +01:00
|
|
|
hb_bool_t
|
2012-12-11 20:17:01 +01:00
|
|
|
hb_ot_layout_get_size_params (hb_face_t *face,
|
2017-10-15 12:11:08 +02:00
|
|
|
unsigned int *design_size, /* OUT. May be nullptr */
|
|
|
|
unsigned int *subfamily_id, /* OUT. May be nullptr */
|
|
|
|
unsigned int *subfamily_name_id, /* OUT. May be nullptr */
|
|
|
|
unsigned int *range_start, /* OUT. May be nullptr */
|
|
|
|
unsigned int *range_end /* OUT. May be nullptr */)
|
2012-11-26 13:02:31 +01:00
|
|
|
{
|
|
|
|
const OT::GPOS &gpos = _get_gpos (face);
|
2012-12-18 05:21:05 +01:00
|
|
|
const hb_tag_t tag = HB_TAG ('s','i','z','e');
|
2012-11-26 13:02:31 +01:00
|
|
|
|
2012-11-30 07:14:20 +01:00
|
|
|
unsigned int num_features = gpos.get_feature_count ();
|
|
|
|
for (unsigned int i = 0; i < num_features; i++)
|
|
|
|
{
|
2012-12-18 05:21:05 +01:00
|
|
|
if (tag == gpos.get_feature_tag (i))
|
2012-11-26 13:02:31 +01:00
|
|
|
{
|
2012-11-30 07:14:20 +01:00
|
|
|
const OT::Feature &f = gpos.get_feature (i);
|
2012-12-18 05:21:05 +01:00
|
|
|
const OT::FeatureParamsSize ¶ms = f.get_feature_params ().get_size_params (tag);
|
2012-11-26 13:02:31 +01:00
|
|
|
|
2012-12-18 05:21:05 +01:00
|
|
|
if (params.designSize)
|
2012-12-12 17:38:49 +01:00
|
|
|
{
|
2012-12-18 05:21:05 +01:00
|
|
|
#define PARAM(a, A) if (a) *a = params.A
|
2012-12-12 17:38:49 +01:00
|
|
|
PARAM (design_size, designSize);
|
|
|
|
PARAM (subfamily_id, subfamilyID);
|
|
|
|
PARAM (subfamily_name_id, subfamilyNameID);
|
|
|
|
PARAM (range_start, rangeStart);
|
|
|
|
PARAM (range_end, rangeEnd);
|
|
|
|
#undef PARAM
|
2012-12-18 05:21:05 +01:00
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
2012-11-26 13:02:31 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-12-11 20:17:01 +01:00
|
|
|
#define PARAM(a, A) if (a) *a = 0
|
2012-12-18 05:21:05 +01:00
|
|
|
PARAM (design_size, designSize);
|
|
|
|
PARAM (subfamily_id, subfamilyID);
|
|
|
|
PARAM (subfamily_name_id, subfamilyNameID);
|
|
|
|
PARAM (range_start, rangeStart);
|
|
|
|
PARAM (range_end, rangeEnd);
|
2012-12-11 20:17:01 +01:00
|
|
|
#undef PARAM
|
2012-11-26 13:02:31 +01:00
|
|
|
|
2012-12-18 05:21:05 +01:00
|
|
|
return false;
|
2012-11-26 13:02:31 +01:00
|
|
|
}
|
2013-05-03 00:18:24 +02:00
|
|
|
|
|
|
|
|
|
|
|
/*
|
2013-05-03 00:52:24 +02:00
|
|
|
* Parts of different types are implemented here such that they have direct
|
2013-05-03 00:18:24 +02:00
|
|
|
* access to GSUB/GPOS lookups.
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
2013-05-03 00:52:24 +02:00
|
|
|
struct GSUBProxy
|
|
|
|
{
|
|
|
|
static const unsigned int table_index = 0;
|
2013-10-28 19:26:02 +01:00
|
|
|
static const bool inplace = false;
|
2013-05-03 00:52:24 +02:00
|
|
|
typedef OT::SubstLookup Lookup;
|
|
|
|
|
|
|
|
GSUBProxy (hb_face_t *face) :
|
2018-08-16 05:12:25 +02:00
|
|
|
table (*hb_ot_face_data (face)->table.GSUB),
|
|
|
|
accels (hb_ot_face_data (face)->gsub_accels) {}
|
2013-05-03 00:52:24 +02:00
|
|
|
|
|
|
|
const OT::GSUB &table;
|
|
|
|
const hb_ot_layout_lookup_accelerator_t *accels;
|
|
|
|
};
|
|
|
|
|
|
|
|
struct GPOSProxy
|
|
|
|
{
|
|
|
|
static const unsigned int table_index = 1;
|
2013-10-28 19:26:02 +01:00
|
|
|
static const bool inplace = true;
|
2013-05-03 00:52:24 +02:00
|
|
|
typedef OT::PosLookup Lookup;
|
|
|
|
|
|
|
|
GPOSProxy (hb_face_t *face) :
|
2018-08-16 05:12:25 +02:00
|
|
|
table (*hb_ot_face_data (face)->table.GPOS),
|
|
|
|
accels (hb_ot_face_data (face)->gpos_accels) {}
|
2013-05-03 00:52:24 +02:00
|
|
|
|
|
|
|
const OT::GPOS &table;
|
|
|
|
const hb_ot_layout_lookup_accelerator_t *accels;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
2016-01-11 18:38:41 +01:00
|
|
|
struct hb_get_subtables_context_t :
|
2018-08-02 08:59:09 +02:00
|
|
|
hb_dispatch_context_t<hb_get_subtables_context_t, hb_void_t, HB_DEBUG_APPLY>
|
2016-01-11 18:38:41 +01:00
|
|
|
{
|
|
|
|
template <typename Type>
|
2018-01-18 01:46:51 +01:00
|
|
|
static inline bool apply_to (const void *obj, OT::hb_ot_apply_context_t *c)
|
2016-01-11 18:38:41 +01:00
|
|
|
{
|
|
|
|
const Type *typed_obj = (const Type *) obj;
|
|
|
|
return typed_obj->apply (c);
|
|
|
|
}
|
|
|
|
|
2018-01-18 01:46:51 +01:00
|
|
|
typedef bool (*hb_apply_func_t) (const void *obj, OT::hb_ot_apply_context_t *c);
|
2016-01-11 18:38:41 +01:00
|
|
|
|
|
|
|
struct hb_applicable_t
|
|
|
|
{
|
|
|
|
inline void init (const void *obj_, hb_apply_func_t apply_func_)
|
|
|
|
{
|
|
|
|
obj = obj_;
|
|
|
|
apply_func = apply_func_;
|
|
|
|
}
|
|
|
|
|
2018-01-18 01:46:51 +01:00
|
|
|
inline bool apply (OT::hb_ot_apply_context_t *c) const { return apply_func (obj, c); }
|
2016-01-11 18:38:41 +01:00
|
|
|
|
|
|
|
private:
|
|
|
|
const void *obj;
|
|
|
|
hb_apply_func_t apply_func;
|
|
|
|
};
|
|
|
|
|
2018-05-02 01:09:00 +02:00
|
|
|
typedef hb_auto_t<hb_vector_t<hb_applicable_t> > array_t;
|
2016-01-11 18:38:41 +01:00
|
|
|
|
|
|
|
/* Dispatch interface. */
|
|
|
|
inline const char *get_name (void) { return "GET_SUBTABLES"; }
|
|
|
|
template <typename T>
|
|
|
|
inline return_t dispatch (const T &obj)
|
|
|
|
{
|
|
|
|
hb_applicable_t *entry = array.push();
|
2018-06-02 02:48:37 +02:00
|
|
|
entry->init (&obj, apply_to<T>);
|
2016-01-11 18:38:41 +01:00
|
|
|
return HB_VOID;
|
|
|
|
}
|
|
|
|
static return_t default_return_value (void) { return HB_VOID; }
|
|
|
|
bool stop_sublookup_iteration (return_t r HB_UNUSED) const { return false; }
|
|
|
|
|
|
|
|
hb_get_subtables_context_t (array_t &array_) :
|
|
|
|
array (array_),
|
|
|
|
debug_depth (0) {}
|
|
|
|
|
|
|
|
array_t &array;
|
|
|
|
unsigned int debug_depth;
|
|
|
|
};
|
|
|
|
|
2015-02-19 15:15:05 +01:00
|
|
|
static inline bool
|
2018-01-18 01:46:51 +01:00
|
|
|
apply_forward (OT::hb_ot_apply_context_t *c,
|
2016-01-11 18:38:41 +01:00
|
|
|
const hb_ot_layout_lookup_accelerator_t &accel,
|
|
|
|
const hb_get_subtables_context_t::array_t &subtables)
|
2015-02-19 15:15:05 +01:00
|
|
|
{
|
|
|
|
bool ret = false;
|
|
|
|
hb_buffer_t *buffer = c->buffer;
|
2018-06-01 05:03:00 +02:00
|
|
|
while (buffer->idx < buffer->len && buffer->successful)
|
2015-02-19 15:15:05 +01:00
|
|
|
{
|
2016-01-11 18:38:41 +01:00
|
|
|
bool applied = false;
|
2015-02-19 15:15:05 +01:00
|
|
|
if (accel.may_have (buffer->cur().codepoint) &&
|
|
|
|
(buffer->cur().mask & c->lookup_mask) &&
|
2016-01-11 18:38:41 +01:00
|
|
|
c->check_glyph_property (&buffer->cur(), c->lookup_props))
|
|
|
|
{
|
|
|
|
for (unsigned int i = 0; i < subtables.len; i++)
|
|
|
|
if (subtables[i].apply (c))
|
|
|
|
{
|
|
|
|
applied = true;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (applied)
|
2015-02-19 15:15:05 +01:00
|
|
|
ret = true;
|
|
|
|
else
|
|
|
|
buffer->next_glyph ();
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline bool
|
2018-01-18 01:46:51 +01:00
|
|
|
apply_backward (OT::hb_ot_apply_context_t *c,
|
2016-01-11 18:38:41 +01:00
|
|
|
const hb_ot_layout_lookup_accelerator_t &accel,
|
|
|
|
const hb_get_subtables_context_t::array_t &subtables)
|
2015-02-19 15:15:05 +01:00
|
|
|
{
|
|
|
|
bool ret = false;
|
|
|
|
hb_buffer_t *buffer = c->buffer;
|
|
|
|
do
|
|
|
|
{
|
|
|
|
if (accel.may_have (buffer->cur().codepoint) &&
|
|
|
|
(buffer->cur().mask & c->lookup_mask) &&
|
2016-01-11 18:38:41 +01:00
|
|
|
c->check_glyph_property (&buffer->cur(), c->lookup_props))
|
|
|
|
{
|
|
|
|
for (unsigned int i = 0; i < subtables.len; i++)
|
|
|
|
if (subtables[i].apply (c))
|
|
|
|
{
|
|
|
|
ret = true;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2015-02-19 15:15:05 +01:00
|
|
|
/* The reverse lookup doesn't "advance" cursor (for good reason). */
|
|
|
|
buffer->idx--;
|
|
|
|
|
|
|
|
}
|
|
|
|
while ((int) buffer->idx >= 0);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2013-05-03 23:49:44 +02:00
|
|
|
template <typename Proxy>
|
2015-02-19 09:33:30 +01:00
|
|
|
static inline void
|
2018-01-18 01:46:51 +01:00
|
|
|
apply_string (OT::hb_ot_apply_context_t *c,
|
2013-05-03 23:49:44 +02:00
|
|
|
const typename Proxy::Lookup &lookup,
|
|
|
|
const hb_ot_layout_lookup_accelerator_t &accel)
|
|
|
|
{
|
2013-10-18 19:33:09 +02:00
|
|
|
hb_buffer_t *buffer = c->buffer;
|
2013-05-03 23:49:44 +02:00
|
|
|
|
2015-11-07 01:18:09 +01:00
|
|
|
if (unlikely (!buffer->len || !c->lookup_mask))
|
2015-02-19 09:33:30 +01:00
|
|
|
return;
|
2013-05-03 23:49:44 +02:00
|
|
|
|
2015-08-18 15:36:43 +02:00
|
|
|
c->set_lookup_props (lookup.get_props ());
|
2013-05-03 23:49:44 +02:00
|
|
|
|
2016-01-11 18:38:41 +01:00
|
|
|
hb_get_subtables_context_t::array_t subtables;
|
|
|
|
hb_get_subtables_context_t c_get_subtables (subtables);
|
|
|
|
lookup.dispatch (&c_get_subtables);
|
|
|
|
|
2013-05-03 23:49:44 +02:00
|
|
|
if (likely (!lookup.is_reverse ()))
|
|
|
|
{
|
|
|
|
/* in/out forward substitution/positioning */
|
|
|
|
if (Proxy::table_index == 0)
|
2013-10-18 19:33:09 +02:00
|
|
|
buffer->clear_output ();
|
|
|
|
buffer->idx = 0;
|
2013-05-03 23:49:44 +02:00
|
|
|
|
2015-02-19 15:30:05 +01:00
|
|
|
bool ret;
|
2016-01-11 18:38:41 +01:00
|
|
|
ret = apply_forward (c, accel, subtables);
|
2015-02-19 15:30:05 +01:00
|
|
|
if (ret)
|
2013-05-04 00:10:10 +02:00
|
|
|
{
|
2013-10-28 19:26:02 +01:00
|
|
|
if (!Proxy::inplace)
|
2013-10-18 19:33:09 +02:00
|
|
|
buffer->swap_buffers ();
|
2013-05-04 00:10:10 +02:00
|
|
|
else
|
2015-02-19 09:33:30 +01:00
|
|
|
assert (!buffer->has_separate_output ());
|
2013-05-04 00:10:10 +02:00
|
|
|
}
|
2013-05-03 23:49:44 +02:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* in-place backward substitution/positioning */
|
|
|
|
if (Proxy::table_index == 0)
|
2013-10-18 19:33:09 +02:00
|
|
|
buffer->remove_output ();
|
|
|
|
buffer->idx = buffer->len - 1;
|
2013-05-03 23:49:44 +02:00
|
|
|
|
2016-01-11 18:38:41 +01:00
|
|
|
apply_backward (c, accel, subtables);
|
2013-05-03 23:49:44 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-05-03 00:52:24 +02:00
|
|
|
template <typename Proxy>
|
|
|
|
inline void hb_ot_map_t::apply (const Proxy &proxy,
|
2013-05-03 00:18:24 +02:00
|
|
|
const hb_ot_shape_plan_t *plan,
|
|
|
|
hb_font_t *font,
|
|
|
|
hb_buffer_t *buffer) const
|
|
|
|
{
|
2013-05-03 00:52:24 +02:00
|
|
|
const unsigned int table_index = proxy.table_index;
|
2013-05-03 00:18:24 +02:00
|
|
|
unsigned int i = 0;
|
2018-01-18 01:46:51 +01:00
|
|
|
OT::hb_ot_apply_context_t c (table_index, font, buffer);
|
2013-05-03 23:49:44 +02:00
|
|
|
c.set_recurse_func (Proxy::Lookup::apply_recurse_func);
|
2013-05-03 00:18:24 +02:00
|
|
|
|
|
|
|
for (unsigned int stage_index = 0; stage_index < stages[table_index].len; stage_index++) {
|
|
|
|
const stage_map_t *stage = &stages[table_index][stage_index];
|
|
|
|
for (; i < stage->last_lookup; i++)
|
2013-05-03 00:52:24 +02:00
|
|
|
{
|
|
|
|
unsigned int lookup_index = lookups[table_index][i].index;
|
2015-12-18 19:17:07 +01:00
|
|
|
if (!buffer->message (font, "start lookup %d", lookup_index)) continue;
|
2015-08-18 15:36:43 +02:00
|
|
|
c.set_lookup_index (lookup_index);
|
2013-05-03 00:52:24 +02:00
|
|
|
c.set_lookup_mask (lookups[table_index][i].mask);
|
|
|
|
c.set_auto_zwj (lookups[table_index][i].auto_zwj);
|
2017-07-14 13:43:34 +02:00
|
|
|
c.set_auto_zwnj (lookups[table_index][i].auto_zwnj);
|
2013-05-03 23:49:44 +02:00
|
|
|
apply_string<Proxy> (&c,
|
|
|
|
proxy.table.get_lookup (lookup_index),
|
|
|
|
proxy.accels[lookup_index]);
|
2015-12-18 19:17:07 +01:00
|
|
|
(void) buffer->message (font, "end lookup %d", lookup_index);
|
2013-05-03 00:52:24 +02:00
|
|
|
}
|
2013-05-03 00:18:24 +02:00
|
|
|
|
|
|
|
if (stage->pause_func)
|
|
|
|
{
|
|
|
|
buffer->clear_output ();
|
|
|
|
stage->pause_func (plan, font, buffer);
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}
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}
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}
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void hb_ot_map_t::substitute (const hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const
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|
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{
|
2013-05-03 00:52:24 +02:00
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GSUBProxy proxy (font->face);
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|
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apply (proxy, plan, font, buffer);
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2013-05-03 00:18:24 +02:00
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}
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void hb_ot_map_t::position (const hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const
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|
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{
|
2013-05-03 00:52:24 +02:00
|
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|
GPOSProxy proxy (font->face);
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|
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apply (proxy, plan, font, buffer);
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|
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}
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|
2018-02-10 22:45:17 +01:00
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void
|
2018-01-18 01:46:51 +01:00
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hb_ot_layout_substitute_lookup (OT::hb_ot_apply_context_t *c,
|
2013-05-03 00:52:24 +02:00
|
|
|
const OT::SubstLookup &lookup,
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|
|
|
const hb_ot_layout_lookup_accelerator_t &accel)
|
|
|
|
{
|
2013-05-03 23:49:44 +02:00
|
|
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apply_string<GSUBProxy> (c, lookup, accel);
|
2013-05-03 00:18:24 +02:00
|
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|
}
|
2018-02-26 01:32:17 +01:00
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/*
|
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* OT::BASE
|
|
|
|
*/
|
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|
2018-02-26 10:15:08 +01:00
|
|
|
// /**
|
|
|
|
// * hb_ot_base_has_data:
|
|
|
|
// * @face: #hb_face_t to test
|
|
|
|
// *
|
|
|
|
// * This function allows to verify the presence of an OpenType BASE table on the
|
|
|
|
// * face.
|
|
|
|
// *
|
|
|
|
// * Return value: true if face has a BASE table, false otherwise
|
|
|
|
// *
|
|
|
|
// * Since: XXX
|
|
|
|
// **/
|
|
|
|
// hb_bool_t
|
|
|
|
// hb_ot_base_has_data (hb_face_t *face)
|
|
|
|
// {
|
2018-08-06 15:30:12 +02:00
|
|
|
// return _get_base (face).has_data ();
|
2018-02-26 10:15:08 +01:00
|
|
|
// }
|