1 : /*
2 : * Copyright © 2011 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): Behdad Esfahbod
25 : */
26 :
27 : #include "hb-fallback-shape-private.hh"
28 :
29 : #include "hb-buffer-private.hh"
30 :
31 : hb_bool_t
32 0 : hb_fallback_shape (hb_font_t *font,
33 : hb_buffer_t *buffer,
34 : const hb_feature_t *features,
35 : unsigned int num_features,
36 : const char * const *shaper_options)
37 : {
38 0 : buffer->guess_properties ();
39 :
40 0 : unsigned int count = buffer->len;
41 :
42 0 : for (unsigned int i = 0; i < count; i++)
43 0 : hb_font_get_glyph (font, buffer->info[i].codepoint, 0, &buffer->info[i].codepoint);
44 :
45 0 : buffer->clear_positions ();
46 :
47 0 : for (unsigned int i = 0; i < count; i++) {
48 0 : hb_font_get_glyph_advance_for_direction (font, buffer->info[i].codepoint,
49 : buffer->props.direction,
50 0 : &buffer->pos[i].x_advance,
51 0 : &buffer->pos[i].y_advance);
52 0 : hb_font_subtract_glyph_origin_for_direction (font, buffer->info[i].codepoint,
53 : buffer->props.direction,
54 0 : &buffer->pos[i].x_offset,
55 0 : &buffer->pos[i].y_offset);
56 : }
57 :
58 0 : if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction))
59 0 : hb_buffer_reverse (buffer);
60 :
61 0 : return TRUE;
62 : }
|