harfbuzz (8.3.0)
1 /*
2 * Copyright © 2022 Red Hat, 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 * Red Hat Author(s): Matthias Clasen
25 */
26
27 #ifndef HB_CAIRO_H
28 #define HB_CAIRO_H
29
30 #include "hb.h"
31
32 #include <cairo.h>
33
34 HB_BEGIN_DECLS
35
36 HB_EXTERN cairo_font_face_t *
37 hb_cairo_font_face_create_for_font (hb_font_t *font);
38
39 HB_EXTERN hb_font_t *
40 hb_cairo_font_face_get_font (cairo_font_face_t *font_face);
41
42 HB_EXTERN cairo_font_face_t *
43 hb_cairo_font_face_create_for_face (hb_face_t *face);
44
45 HB_EXTERN hb_face_t *
46 hb_cairo_font_face_get_face (cairo_font_face_t *font_face);
47
48 /**
49 * hb_cairo_font_init_func_t:
50 * @font: The #hb_font_t being created
51 * @scaled_font: The respective #cairo_scaled_font_t
52 * @user_data: User data accompanying this method
53 *
54 * The type of a virtual method to be called when a cairo
55 * face created using hb_cairo_font_face_create_for_face()
56 * creates an #hb_font_t for a #cairo_scaled_font_t.
57 *
58 * Return value: the #hb_font_t value to use; in most cases same as @font
59 *
60 * Since: 7.0.0
61 */
62 typedef hb_font_t * (*hb_cairo_font_init_func_t) (hb_font_t *font,
63 cairo_scaled_font_t *scaled_font,
64 void *user_data);
65
66 HB_EXTERN void
67 hb_cairo_font_face_set_font_init_func (cairo_font_face_t *font_face,
68 hb_cairo_font_init_func_t func,
69 void *user_data,
70 hb_destroy_func_t destroy);
71
72 HB_EXTERN hb_font_t *
73 hb_cairo_scaled_font_get_font (cairo_scaled_font_t *scaled_font);
74
75 HB_EXTERN void
76 hb_cairo_font_face_set_scale_factor (cairo_font_face_t *font_face,
77 unsigned int scale_factor);
78
79 HB_EXTERN unsigned int
80 hb_cairo_font_face_get_scale_factor (cairo_font_face_t *font_face);
81
82 HB_EXTERN void
83 hb_cairo_glyphs_from_buffer (hb_buffer_t *buffer,
84 hb_bool_t utf8_clusters,
85 double x_scale_factor,
86 double y_scale_factor,
87 double x,
88 double y,
89 const char *utf8,
90 int utf8_len,
91 cairo_glyph_t **glyphs,
92 unsigned int *num_glyphs,
93 cairo_text_cluster_t **clusters,
94 unsigned int *num_clusters,
95 cairo_text_cluster_flags_t *cluster_flags);
96
97 HB_END_DECLS
98
99 #endif /* HB_CAIRO_H */
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