third_party/harfbuzz-ng/src/hb-shape.h

   1 /*
   2  * Copyright © 2009  Red Hat, Inc.
   3  * Copyright © 2012  Google, Inc.
   4  *
   5  *  This is part of HarfBuzz, a text shaping library.
   6  *
   7  * Permission is hereby granted, without written agreement and without
   8  * license or royalty fees, to use, copy, modify, and distribute this
   9  * software and its documentation for any purpose, provided that the
  10  * above copyright notice and the following two paragraphs appear in
  11  * all copies of this software.
  12  *
  13  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  14  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  15  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  16  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  17  * DAMAGE.
  18  *
  19  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  20  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  21  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  22  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  23  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  24  *
  25  * Red Hat Author(s): Behdad Esfahbod
  26  * Google Author(s): Behdad Esfahbod
  27  */
  28
  29 #ifndef HB_H_IN
  30 #error "Include <hb.h> instead."
  31 #endif
  32
  33 #ifndef HB_SHAPE_H
  34 #define HB_SHAPE_H
  35
  36 #include "hb-common.h"
  37 #include "hb-buffer.h"
  38 #include "hb-font.h"
  39
  40 HB_BEGIN_DECLS
  41
  42
  43 typedef struct hb_feature_t {
  44   hb_tag_t      tag;
  45   uint32_t      value;
  46   unsigned int  start;
  47   unsigned int  end;
  48 } hb_feature_t;
  49
  50 /* len=-1 means str is NUL-terminated */
  51 hb_bool_t
  52 hb_feature_from_string (const char *str, int len,
  53                         hb_feature_t *feature);
  54
  55 /* Something like 128 bytes is more than enough.
  56  * nul-terminates. */
  57 void
  58 hb_feature_to_string (hb_feature_t *feature,
  59                       char *buf, unsigned int size);
  60
  61
  62 void
  63 hb_shape (hb_font_t           *font,
  64           hb_buffer_t         *buffer,
  65           const hb_feature_t  *features,
  66           unsigned int         num_features);
  67
  68 hb_bool_t
  69 hb_shape_full (hb_font_t          *font,
  70                hb_buffer_t        *buffer,
  71                const hb_feature_t *features,
  72                unsigned int        num_features,
  73                const char * const *shaper_list);
  74
  75 const char **
  76 hb_shape_list_shapers (void);
  77
  78
  79 HB_END_DECLS
  80
  81 #endif /* HB_SHAPE_H */