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1 /* | 1 /* |
2 * Copyright (C) 2009 Red Hat, Inc. | 2 * Copyright © 2011 Google, Inc. |
3 * | 3 * |
4 * This is part of HarfBuzz, a text shaping library. | 4 * This is part of HarfBuzz, a text shaping library. |
5 * | 5 * |
6 * Permission is hereby granted, without written agreement and without | 6 * Permission is hereby granted, without written agreement and without |
7 * license or royalty fees, to use, copy, modify, and distribute this | 7 * license or royalty fees, to use, copy, modify, and distribute this |
8 * software and its documentation for any purpose, provided that the | 8 * software and its documentation for any purpose, provided that the |
9 * above copyright notice and the following two paragraphs appear in | 9 * above copyright notice and the following two paragraphs appear in |
10 * all copies of this software. | 10 * all copies of this software. |
11 * | 11 * |
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR | 12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES | 13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN | 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 | 15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
16 * DAMAGE. | 16 * DAMAGE. |
17 * | 17 * |
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, | 18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | 19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | 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 | 21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | 22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
23 * | 23 * |
24 * Red Hat Author(s): Behdad Esfahbod | 24 * Google Author(s): Behdad Esfahbod |
25 */ | 25 */ |
26 | 26 |
27 #include "hb-private.h" | 27 #include "hb-fallback-shape-private.hh" |
28 | |
29 #include "hb-shape.h" | |
30 | 28 |
31 #include "hb-buffer-private.hh" | 29 #include "hb-buffer-private.hh" |
32 | 30 |
33 #include "hb-ot-shape.h" | 31 hb_bool_t |
| 32 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 buffer->guess_properties (); |
34 | 39 |
35 #ifdef HAVE_GRAPHITE | 40 unsigned int count = buffer->len; |
36 #include "hb-graphite.h" | |
37 #endif | |
38 | 41 |
39 HB_BEGIN_DECLS | 42 for (unsigned int i = 0; i < count; i++) |
| 43 hb_font_get_glyph (font, buffer->info[i].codepoint, 0, &buffer->info[i].code
point); |
40 | 44 |
| 45 buffer->clear_positions (); |
41 | 46 |
42 void | 47 for (unsigned int i = 0; i < count; i++) { |
43 hb_shape (hb_font_t *font, | 48 hb_font_get_glyph_advance_for_direction (font, buffer->info[i].codepoint, |
44 » hb_face_t *face, | 49 » » » » » buffer->props.direction, |
45 » hb_buffer_t *buffer, | 50 » » » » » &buffer->pos[i].x_advance, |
46 » hb_feature_t *features, | 51 » » » » » &buffer->pos[i].y_advance); |
47 » unsigned int num_features) | 52 hb_font_subtract_glyph_origin_for_direction (font, buffer->info[i].codepoint
, |
48 { | 53 » » » » » » buffer->props.direction, |
49 #if 0 && defined(HAVE_GRAPHITE) | 54 » » » » » » &buffer->pos[i].x_offset, |
50 hb_blob_t *silf_blob; | 55 » » » » » » &buffer->pos[i].y_offset); |
51 silf_blob = hb_face_get_table (face, HB_GRAPHITE_TAG_Silf); | |
52 if (hb_blob_get_length(silf_blob)) | |
53 { | |
54 hb_graphite_shape(font, face, buffer, features, num_features); | |
55 hb_blob_destroy(silf_blob); | |
56 return; | |
57 } | 56 } |
58 hb_blob_destroy(silf_blob); | |
59 #endif | |
60 | 57 |
61 hb_ot_shape (font, face, buffer, features, num_features); | 58 if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction)) |
| 59 hb_buffer_reverse (buffer); |
| 60 |
| 61 return TRUE; |
62 } | 62 } |
63 | |
64 | |
65 HB_END_DECLS | |
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