jdk/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-face.cc
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8143177: Integrate harfbuzz opentype layout engine per JEP 258 Reviewed-by: srl, vadim, serb
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/*
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 * Copyright © 2009  Red Hat, Inc.
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 * Copyright © 2012  Google, Inc.
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 *
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 *  This is part of HarfBuzz, a text shaping library.
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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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 * Google Author(s): Behdad Esfahbod
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 */
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#include "hb-private.hh"
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#include "hb-ot-layout-private.hh"
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#include "hb-font-private.hh"
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#include "hb-open-file-private.hh"
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#include "hb-ot-head-table.hh"
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#include "hb-ot-maxp-table.hh"
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#include "hb-cache-private.hh"
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#include <string.h>
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/*
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 * hb_face_t
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 */
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const hb_face_t _hb_face_nil = {
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  HB_OBJECT_HEADER_STATIC,
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  true, /* immutable */
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  NULL, /* reference_table_func */
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  NULL, /* user_data */
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  NULL, /* destroy */
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  0,    /* index */
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  1000, /* upem */
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  0,    /* num_glyphs */
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  {
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#define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INVALID,
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#include "hb-shaper-list.hh"
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#undef HB_SHAPER_IMPLEMENT
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  },
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  NULL, /* shape_plans */
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};
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/**
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 * hb_face_create_for_tables:
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 * @reference_table_func: (closure user_data) (destroy destroy) (scope notified):
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 * @user_data:
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 * @destroy:
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 *
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 *
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 *
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 * Return value: (transfer full)
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 *
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 * Since: 0.9.2
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 **/
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hb_face_t *
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hb_face_create_for_tables (hb_reference_table_func_t  reference_table_func,
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                           void                      *user_data,
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                           hb_destroy_func_t          destroy)
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{
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  hb_face_t *face;
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  if (!reference_table_func || !(face = hb_object_create<hb_face_t> ())) {
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    if (destroy)
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      destroy (user_data);
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    return hb_face_get_empty ();
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  }
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  face->reference_table_func = reference_table_func;
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  face->user_data = user_data;
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  face->destroy = destroy;
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  face->upem = 0;
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  face->num_glyphs = (unsigned int) -1;
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  return face;
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}
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typedef struct hb_face_for_data_closure_t {
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  hb_blob_t *blob;
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  unsigned int  index;
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} hb_face_for_data_closure_t;
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static hb_face_for_data_closure_t *
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_hb_face_for_data_closure_create (hb_blob_t *blob, unsigned int index)
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{
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  hb_face_for_data_closure_t *closure;
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  closure = (hb_face_for_data_closure_t *) calloc (1, sizeof (hb_face_for_data_closure_t));
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  if (unlikely (!closure))
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    return NULL;
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  closure->blob = blob;
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  closure->index = index;
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  return closure;
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}
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static void
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_hb_face_for_data_closure_destroy (hb_face_for_data_closure_t *closure)
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{
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  hb_blob_destroy (closure->blob);
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  free (closure);
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}
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static hb_blob_t *
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_hb_face_for_data_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
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{
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  hb_face_for_data_closure_t *data = (hb_face_for_data_closure_t *) user_data;
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  if (tag == HB_TAG_NONE)
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    return hb_blob_reference (data->blob);
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  const OT::OpenTypeFontFile &ot_file = *OT::Sanitizer<OT::OpenTypeFontFile>::lock_instance (data->blob);
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  const OT::OpenTypeFontFace &ot_face = ot_file.get_face (data->index);
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  const OT::OpenTypeTable &table = ot_face.get_table_by_tag (tag);
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  hb_blob_t *blob = hb_blob_create_sub_blob (data->blob, table.offset, table.length);
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  return blob;
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}
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/**
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 * hb_face_create: (Xconstructor)
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 * @blob:
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 * @index:
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 *
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 *
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 *
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 * Return value: (transfer full):
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 *
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 * Since: 0.9.2
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 **/
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hb_face_t *
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hb_face_create (hb_blob_t    *blob,
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                unsigned int  index)
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{
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  hb_face_t *face;
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  if (unlikely (!blob))
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    blob = hb_blob_get_empty ();
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  hb_face_for_data_closure_t *closure = _hb_face_for_data_closure_create (OT::Sanitizer<OT::OpenTypeFontFile>::sanitize (hb_blob_reference (blob)), index);
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  if (unlikely (!closure))
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    return hb_face_get_empty ();
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  face = hb_face_create_for_tables (_hb_face_for_data_reference_table,
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                                    closure,
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                                    (hb_destroy_func_t) _hb_face_for_data_closure_destroy);
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  hb_face_set_index (face, index);
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  return face;
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}
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/**
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 * hb_face_get_empty:
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 *
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 *
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 *
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 * Return value: (transfer full)
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 *
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 * Since: 0.9.2
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 **/
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hb_face_t *
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hb_face_get_empty (void)
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{
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  return const_cast<hb_face_t *> (&_hb_face_nil);
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}
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/**
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 * hb_face_reference: (skip)
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 * @face: a face.
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 *
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 *
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 *
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 * Return value:
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 *
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 * Since: 0.9.2
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 **/
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hb_face_t *
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hb_face_reference (hb_face_t *face)
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{
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  return hb_object_reference (face);
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}
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/**
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 * hb_face_destroy: (skip)
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 * @face: a face.
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 *
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 *
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 *
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 * Since: 0.9.2
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 **/
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void
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hb_face_destroy (hb_face_t *face)
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{
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  if (!hb_object_destroy (face)) return;
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  for (hb_face_t::plan_node_t *node = face->shape_plans; node; )
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  {
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    hb_face_t::plan_node_t *next = node->next;
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    hb_shape_plan_destroy (node->shape_plan);
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    free (node);
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    node = next;
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  }
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#define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, face);
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#include "hb-shaper-list.hh"
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#undef HB_SHAPER_IMPLEMENT
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  if (face->destroy)
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    face->destroy (face->user_data);
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  free (face);
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}
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/**
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 * hb_face_set_user_data: (skip)
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 * @face: a face.
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 * @key:
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 * @data:
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 * @destroy:
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 * @replace:
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 *
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 *
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 *
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 * Return value:
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 *
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 * Since: 0.9.2
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 **/
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hb_bool_t
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hb_face_set_user_data (hb_face_t          *face,
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                       hb_user_data_key_t *key,
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                       void *              data,
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                       hb_destroy_func_t   destroy,
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                       hb_bool_t           replace)
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{
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  return hb_object_set_user_data (face, key, data, destroy, replace);
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}
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/**
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 * hb_face_get_user_data: (skip)
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 * @face: a face.
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 * @key:
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 *
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 *
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 *
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 * Return value: (transfer none):
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 *
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 * Since: 0.9.2
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 **/
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void *
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hb_face_get_user_data (hb_face_t          *face,
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                       hb_user_data_key_t *key)
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{
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  return hb_object_get_user_data (face, key);
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}
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/**
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 * hb_face_make_immutable:
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 * @face: a face.
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 *
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parents:
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 *
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parents:
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   295
 *
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parents:
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   296
 * Since: 0.9.2
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 **/
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void
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   299
hb_face_make_immutable (hb_face_t *face)
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{
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   301
  if (unlikely (hb_object_is_inert (face)))
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    return;
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   303
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  face->immutable = true;
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}
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/**
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 * hb_face_is_immutable:
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parents:
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   309
 * @face: a face.
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 *
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parents:
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   311
 *
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prr
parents:
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   312
 *
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parents:
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   313
 * Return value:
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parents:
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   314
 *
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parents:
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   315
 * Since: 0.9.2
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   316
 **/
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   317
hb_bool_t
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hb_face_is_immutable (hb_face_t *face)
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{
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  return face->immutable;
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parents:
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   321
}
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parents:
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   322
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   323
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parents:
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   324
/**
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parents:
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   325
 * hb_face_reference_table:
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parents:
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   326
 * @face: a face.
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prr
parents:
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   327
 * @tag:
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prr
parents:
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   328
 *
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prr
parents:
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   329
 *
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prr
parents:
diff changeset
   330
 *
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prr
parents:
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   331
 * Return value: (transfer full):
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prr
parents:
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   332
 *
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prr
parents:
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   333
 * Since: 0.9.2
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prr
parents:
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   334
 **/
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prr
parents:
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   335
hb_blob_t *
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parents:
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   336
hb_face_reference_table (hb_face_t *face,
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prr
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   337
                         hb_tag_t   tag)
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parents:
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   338
{
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   339
  return face->reference_table (tag);
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parents:
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   340
}
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parents:
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   341
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prr
parents:
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   342
/**
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   343
 * hb_face_reference_blob:
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parents:
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   344
 * @face: a face.
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parents:
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   345
 *
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prr
parents:
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   346
 *
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prr
parents:
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   347
 *
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prr
parents:
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   348
 * Return value: (transfer full):
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   349
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   350
 * Since: 0.9.2
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prr
parents:
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   351
 **/
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   352
hb_blob_t *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   353
hb_face_reference_blob (hb_face_t *face)
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prr
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   354
{
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   355
  return face->reference_table (HB_TAG_NONE);
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prr
parents:
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   356
}
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   357
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   358
/**
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   359
 * hb_face_set_index:
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prr
parents:
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   360
 * @face: a face.
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   361
 * @index:
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   362
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   363
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   364
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   365
 * Since: 0.9.2
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   366
 **/
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
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   367
void
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   368
hb_face_set_index (hb_face_t    *face,
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
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   369
                   unsigned int  index)
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   370
{
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
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   371
  if (face->immutable)
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   372
    return;
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   373
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   374
  face->index = index;
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   375
}
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   376
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prr
parents:
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   377
/**
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   378
 * hb_face_get_index:
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
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   379
 * @face: a face.
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   380
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   381
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   382
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   383
 * Return value:
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   384
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   385
 * Since: 0.9.2
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   386
 **/
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   387
unsigned int
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   388
hb_face_get_index (hb_face_t    *face)
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   389
{
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   390
  return face->index;
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   391
}
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   392
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   393
/**
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   394
 * hb_face_set_upem:
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   395
 * @face: a face.
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   396
 * @upem:
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   397
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   398
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   399
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   400
 * Since: 0.9.2
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   401
 **/
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   402
void
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   403
hb_face_set_upem (hb_face_t    *face,
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   404
                  unsigned int  upem)
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   405
{
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   406
  if (face->immutable)
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   407
    return;
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   408
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   409
  face->upem = upem;
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   410
}
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   411
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   412
/**
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   413
 * hb_face_get_upem:
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   414
 * @face: a face.
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   415
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   416
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   417
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   418
 * Return value:
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   419
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   420
 * Since: 0.9.2
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   421
 **/
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   422
unsigned int
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   423
hb_face_get_upem (hb_face_t *face)
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   424
{
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   425
  return face->get_upem ();
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   426
}
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   427
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   428
void
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   429
hb_face_t::load_upem (void) const
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   430
{
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   431
  hb_blob_t *head_blob = OT::Sanitizer<OT::head>::sanitize (reference_table (HB_OT_TAG_head));
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   432
  const OT::head *head_table = OT::Sanitizer<OT::head>::lock_instance (head_blob);
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   433
  upem = head_table->get_upem ();
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   434
  hb_blob_destroy (head_blob);
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   435
}
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   436
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   437
/**
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   438
 * hb_face_set_glyph_count:
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   439
 * @face: a face.
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   440
 * @glyph_count:
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   441
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   442
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   443
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   444
 * Since: 0.9.7
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   445
 **/
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   446
void
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   447
hb_face_set_glyph_count (hb_face_t    *face,
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   448
                         unsigned int  glyph_count)
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   449
{
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   450
  if (face->immutable)
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   451
    return;
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   452
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   453
  face->num_glyphs = glyph_count;
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   454
}
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   455
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   456
/**
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   457
 * hb_face_get_glyph_count:
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   458
 * @face: a face.
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   459
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   460
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   461
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   462
 * Return value:
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   463
 *
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   464
 * Since: 0.9.7
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   465
 **/
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   466
unsigned int
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   467
hb_face_get_glyph_count (hb_face_t *face)
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   468
{
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   469
  return face->get_num_glyphs ();
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   470
}
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   471
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   472
void
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   473
hb_face_t::load_num_glyphs (void) const
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   474
{
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   475
  hb_blob_t *maxp_blob = OT::Sanitizer<OT::maxp>::sanitize (reference_table (HB_OT_TAG_maxp));
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   476
  const OT::maxp *maxp_table = OT::Sanitizer<OT::maxp>::lock_instance (maxp_blob);
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   477
  num_glyphs = maxp_table->get_num_glyphs ();
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   478
  hb_blob_destroy (maxp_blob);
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   479
}
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   480
e496a8d8fc8a 8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff changeset
   481