2 * Copyright (C) 1998-2004 David Turner and Werner Lemberg
3 * Copyright (C) 2004,2007,2009 Red Hat, Inc.
5 * This is part of HarfBuzz, a text shaping library.
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.
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
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.
25 * Red Hat Author(s): Owen Taylor, Behdad Esfahbod
31 #include "hb-common.h"
32 #include "hb-unicode.h"
33 #include "hb-language.h"
38 typedef struct _hb_buffer_t hb_buffer_t;
40 typedef struct _hb_glyph_info_t {
41 hb_codepoint_t codepoint;
48 typedef struct _hb_glyph_position_t {
49 hb_position_t x_advance;
50 hb_position_t y_advance;
51 hb_position_t x_offset;
52 hb_position_t y_offset;
54 } hb_glyph_position_t;
58 hb_buffer_create (unsigned int pre_alloc_size);
61 hb_buffer_reference (hb_buffer_t *buffer);
64 hb_buffer_get_reference_count (hb_buffer_t *buffer);
67 hb_buffer_destroy (hb_buffer_t *buffer);
71 hb_buffer_set_unicode_funcs (hb_buffer_t *buffer,
72 hb_unicode_funcs_t *unicode_funcs);
75 hb_buffer_get_unicode_funcs (hb_buffer_t *buffer);
78 hb_buffer_set_direction (hb_buffer_t *buffer,
79 hb_direction_t direction);
82 hb_buffer_get_direction (hb_buffer_t *buffer);
85 hb_buffer_set_script (hb_buffer_t *buffer,
89 hb_buffer_get_script (hb_buffer_t *buffer);
92 hb_buffer_set_language (hb_buffer_t *buffer,
93 hb_language_t language);
96 hb_buffer_get_language (hb_buffer_t *buffer);
100 hb_buffer_clear (hb_buffer_t *buffer);
103 hb_buffer_clear_positions (hb_buffer_t *buffer);
106 hb_buffer_ensure (hb_buffer_t *buffer,
110 hb_buffer_reverse (hb_buffer_t *buffer);
113 hb_buffer_reverse_clusters (hb_buffer_t *buffer);
116 /* Filling the buffer in */
119 hb_buffer_add_glyph (hb_buffer_t *buffer,
120 hb_codepoint_t codepoint,
122 unsigned int cluster);
125 hb_buffer_add_utf8 (hb_buffer_t *buffer,
127 unsigned int text_length,
128 unsigned int item_offset,
129 unsigned int item_length);
132 hb_buffer_add_utf16 (hb_buffer_t *buffer,
133 const uint16_t *text,
134 unsigned int text_length,
135 unsigned int item_offset,
136 unsigned int item_length);
139 hb_buffer_add_utf32 (hb_buffer_t *buffer,
140 const uint32_t *text,
141 unsigned int text_length,
142 unsigned int item_offset,
143 unsigned int item_length);
146 /* Getting glyphs out of the buffer */
148 /* Return value valid as long as buffer not modified */
150 hb_buffer_get_length (hb_buffer_t *buffer);
152 /* Return value valid as long as buffer not modified */
154 hb_buffer_get_glyph_infos (hb_buffer_t *buffer);
156 /* Return value valid as long as buffer not modified */
157 hb_glyph_position_t *
158 hb_buffer_get_glyph_positions (hb_buffer_t *buffer);
163 #endif /* HB_BUFFER_H */