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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 */
82