| /* |
| * Copyright © 2017 Google, Inc. |
| * |
| * 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-open-type-private.hh" |
| |
| #include "hb-ot-layout-private.hh" |
| #include "hb-ot-layout-gsubgpos-private.hh" |
| |
| #include "hb-aat-layout-private.hh" |
| #include "hb-aat-layout-ankr-table.hh" |
| #include "hb-aat-layout-kerx-table.hh" |
| #include "hb-aat-layout-morx-table.hh" |
| #include "hb-aat-layout-trak-table.hh" |
| |
| /* |
| * morx/kerx/trak |
| */ |
| |
| static inline const AAT::ankr& |
| _get_ankr (hb_face_t *face, hb_blob_t **blob = nullptr) |
| { |
| if (unlikely (!hb_ot_shaper_face_data_ensure (face))) |
| { |
| if (blob) |
| *blob = hb_blob_get_empty (); |
| return OT::Null(AAT::ankr); |
| } |
| hb_ot_layout_t * layout = hb_ot_layout_from_face (face); |
| const AAT::ankr& ankr = *(layout->ankr.get ()); |
| if (blob) |
| *blob = layout->ankr.blob; |
| return ankr; |
| } |
| |
| static inline const AAT::kerx& |
| _get_kerx (hb_face_t *face, hb_blob_t **blob = nullptr) |
| { |
| if (unlikely (!hb_ot_shaper_face_data_ensure (face))) |
| { |
| if (blob) |
| *blob = hb_blob_get_empty (); |
| return OT::Null(AAT::kerx); |
| } |
| hb_ot_layout_t * layout = hb_ot_layout_from_face (face); |
| /* XXX this doesn't call set_num_glyphs on sanitizer. */ |
| const AAT::kerx& kerx = *(layout->kerx.get ()); |
| if (blob) |
| *blob = layout->kerx.blob; |
| return kerx; |
| } |
| |
| static inline const AAT::morx& |
| _get_morx (hb_face_t *face, hb_blob_t **blob = nullptr) |
| { |
| if (unlikely (!hb_ot_shaper_face_data_ensure (face))) |
| { |
| if (blob) |
| *blob = hb_blob_get_empty (); |
| return OT::Null(AAT::morx); |
| } |
| hb_ot_layout_t * layout = hb_ot_layout_from_face (face); |
| /* XXX this doesn't call set_num_glyphs on sanitizer. */ |
| const AAT::morx& morx = *(layout->morx.get ()); |
| if (blob) |
| *blob = layout->morx.blob; |
| return morx; |
| } |
| |
| static inline const AAT::trak& |
| _get_trak (hb_face_t *face, hb_blob_t **blob = nullptr) |
| { |
| if (unlikely (!hb_ot_shaper_face_data_ensure (face))) |
| { |
| if (blob) |
| *blob = hb_blob_get_empty (); |
| return OT::Null(AAT::trak); |
| } |
| hb_ot_layout_t * layout = hb_ot_layout_from_face (face); |
| const AAT::trak& trak = *(layout->trak.get ()); |
| if (blob) |
| *blob = layout->trak.blob; |
| return trak; |
| } |
| |
| // static inline void |
| // _hb_aat_layout_create (hb_face_t *face) |
| // { |
| // OT::Sanitizer<AAT::morx> sanitizer; |
| // sanitizer.set_num_glyphs (face->get_num_glyphs ()); |
| // hb_blob_t *morx_blob = sanitizer.sanitize (face->reference_table (HB_AAT_TAG_MORX)); |
| // OT::Sanitizer<AAT::morx>::lock_instance (morx_blob); |
| |
| // if (0) |
| // { |
| // OT::Sanitizer<AAT::Lookup<OT::GlyphID> >::lock_instance (morx_blob)->get_value (1, face->get_num_glyphs ()); |
| // } |
| // } |
| |
| void |
| hb_aat_layout_substitute (hb_font_t *font, hb_buffer_t *buffer) |
| { |
| hb_blob_t *blob; |
| const AAT::morx& morx = _get_morx (font->face, &blob); |
| |
| AAT::hb_aat_apply_context_t c (font, buffer, blob); |
| morx.apply (&c); |
| } |
| |
| void |
| hb_aat_layout_position (hb_font_t *font, hb_buffer_t *buffer) |
| { |
| hb_blob_t *blob; |
| const AAT::ankr& ankr = _get_ankr (font->face, &blob); |
| const AAT::kerx& kerx = _get_kerx (font->face, &blob); |
| const AAT::trak& trak = _get_trak (font->face, &blob); |
| |
| AAT::hb_aat_apply_context_t c (font, buffer, blob); |
| kerx.apply (&c, &ankr); |
| trak.apply (&c); |
| } |