1 /*
   2  * Copyright © 2018  Google, Inc.
   3  *
   4  *  This is part of HarfBuzz, a text shaping library.
   5  *
   6  * Permission is hereby granted, without written agreement and without
   7  * license or royalty fees, to use, copy, modify, and distribute this
   8  * software and its documentation for any purpose, provided that the
   9  * above copyright notice and the following two paragraphs appear in
  10  * all copies of this software.
  11  *
  12  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  13  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  14  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  15  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  16  * DAMAGE.
  17  *
  18  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  19  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  20  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  21  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  22  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  23  *
  24  * Google Author(s): Rod Sheeter
  25  */
  26 
  27 #ifndef HB_SUBSET_H
  28 #define HB_SUBSET_H
  29 
  30 #include "hb.h"
  31 
  32 HB_BEGIN_DECLS
  33 
  34 /*
  35  * hb_subset_input_t
  36  *
  37  * Things that change based on the input. Characters to keep, etc.
  38  */
  39 
  40 typedef struct hb_subset_input_t hb_subset_input_t;
  41 
  42 HB_EXTERN hb_subset_input_t *
  43 hb_subset_input_create_or_fail (void);
  44 
  45 HB_EXTERN hb_subset_input_t *
  46 hb_subset_input_reference (hb_subset_input_t *subset_input);
  47 
  48 HB_EXTERN void
  49 hb_subset_input_destroy (hb_subset_input_t *subset_input);
  50 
  51 HB_EXTERN hb_set_t *
  52 hb_subset_input_unicode_set (hb_subset_input_t *subset_input);
  53 
  54 HB_EXTERN hb_set_t *
  55 hb_subset_input_glyph_set (hb_subset_input_t *subset_input);
  56 
  57 HB_EXTERN void
  58 hb_subset_input_set_drop_hints (hb_subset_input_t *subset_input,
  59                                 hb_bool_t drop_hints);
  60 HB_EXTERN hb_bool_t
  61 hb_subset_input_get_drop_hints (hb_subset_input_t *subset_input);
  62 
  63 HB_EXTERN void
  64 hb_subset_input_set_drop_layout (hb_subset_input_t *subset_input,
  65                                  hb_bool_t drop_layout);
  66 HB_EXTERN hb_bool_t
  67 hb_subset_input_get_drop_layout (hb_subset_input_t *subset_input);
  68 
  69 HB_EXTERN void
  70 hb_subset_input_set_desubroutinize (hb_subset_input_t *subset_input,
  71         hb_bool_t desubroutinize);
  72 HB_EXTERN hb_bool_t
  73 hb_subset_input_get_desubroutinize (hb_subset_input_t *subset_input);
  74 
  75 /* hb_subset () */
  76 HB_EXTERN hb_face_t *
  77 hb_subset (hb_face_t *source, hb_subset_input_t *input);
  78 
  79 
  80 HB_END_DECLS
  81 
  82 #endif /* HB_SUBSET_H */