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annotate CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/include/harfbuzz/hb-ft.h @ 69:33d812a61356

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planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author jpayne
date Tue, 18 Mar 2025 17:55:14 -0400
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jpayne@69 1 /*
jpayne@69 2 * Copyright © 2009 Red Hat, Inc.
jpayne@69 3 * Copyright © 2015 Google, Inc.
jpayne@69 4 *
jpayne@69 5 * This is part of HarfBuzz, a text shaping library.
jpayne@69 6 *
jpayne@69 7 * Permission is hereby granted, without written agreement and without
jpayne@69 8 * license or royalty fees, to use, copy, modify, and distribute this
jpayne@69 9 * software and its documentation for any purpose, provided that the
jpayne@69 10 * above copyright notice and the following two paragraphs appear in
jpayne@69 11 * all copies of this software.
jpayne@69 12 *
jpayne@69 13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
jpayne@69 14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
jpayne@69 15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
jpayne@69 16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
jpayne@69 17 * DAMAGE.
jpayne@69 18 *
jpayne@69 19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
jpayne@69 20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
jpayne@69 21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
jpayne@69 22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
jpayne@69 23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
jpayne@69 24 *
jpayne@69 25 * Red Hat Author(s): Behdad Esfahbod
jpayne@69 26 * Google Author(s): Behdad Esfahbod
jpayne@69 27 */
jpayne@69 28
jpayne@69 29 #ifndef HB_FT_H
jpayne@69 30 #define HB_FT_H
jpayne@69 31
jpayne@69 32 #include "hb.h"
jpayne@69 33
jpayne@69 34 #include <ft2build.h>
jpayne@69 35 #include FT_FREETYPE_H
jpayne@69 36
jpayne@69 37 HB_BEGIN_DECLS
jpayne@69 38
jpayne@69 39 /*
jpayne@69 40 * Note: FreeType is not thread-safe.
jpayne@69 41 * Hence, these functions are not either.
jpayne@69 42 */
jpayne@69 43
jpayne@69 44 /*
jpayne@69 45 * hb-face from ft-face.
jpayne@69 46 */
jpayne@69 47
jpayne@69 48 /* This one creates a new hb-face for given ft-face.
jpayne@69 49 * When the returned hb-face is destroyed, the destroy
jpayne@69 50 * callback is called (if not NULL), with the ft-face passed
jpayne@69 51 * to it.
jpayne@69 52 *
jpayne@69 53 * The client is responsible to make sure that ft-face is
jpayne@69 54 * destroyed after hb-face is destroyed.
jpayne@69 55 *
jpayne@69 56 * Most often you don't want this function. You should use either
jpayne@69 57 * hb_ft_face_create_cached(), or hb_ft_face_create_referenced().
jpayne@69 58 * In particular, if you are going to pass NULL as destroy, you
jpayne@69 59 * probably should use (the more recent) hb_ft_face_create_referenced()
jpayne@69 60 * instead.
jpayne@69 61 */
jpayne@69 62 HB_EXTERN hb_face_t *
jpayne@69 63 hb_ft_face_create (FT_Face ft_face,
jpayne@69 64 hb_destroy_func_t destroy);
jpayne@69 65
jpayne@69 66 /* This version is like hb_ft_face_create(), except that it caches
jpayne@69 67 * the hb-face using the generic pointer of the ft-face. This means
jpayne@69 68 * that subsequent calls to this function with the same ft-face will
jpayne@69 69 * return the same hb-face (correctly referenced).
jpayne@69 70 *
jpayne@69 71 * Client is still responsible for making sure that ft-face is destroyed
jpayne@69 72 * after hb-face is.
jpayne@69 73 */
jpayne@69 74 HB_EXTERN hb_face_t *
jpayne@69 75 hb_ft_face_create_cached (FT_Face ft_face);
jpayne@69 76
jpayne@69 77 /* This version is like hb_ft_face_create(), except that it calls
jpayne@69 78 * FT_Reference_Face() on ft-face, as such keeping ft-face alive
jpayne@69 79 * as long as the hb-face is.
jpayne@69 80 *
jpayne@69 81 * This is the most convenient version to use. Use it unless you have
jpayne@69 82 * very good reasons not to.
jpayne@69 83 */
jpayne@69 84 HB_EXTERN hb_face_t *
jpayne@69 85 hb_ft_face_create_referenced (FT_Face ft_face);
jpayne@69 86
jpayne@69 87
jpayne@69 88 /*
jpayne@69 89 * hb-font from ft-face.
jpayne@69 90 */
jpayne@69 91
jpayne@69 92 /*
jpayne@69 93 * Note:
jpayne@69 94 *
jpayne@69 95 * Set face size on ft-face before creating hb-font from it.
jpayne@69 96 * Otherwise hb-ft would NOT pick up the font size correctly.
jpayne@69 97 */
jpayne@69 98
jpayne@69 99 /* See notes on hb_ft_face_create(). Same issues re lifecycle-management
jpayne@69 100 * apply here. Use hb_ft_font_create_referenced() if you can. */
jpayne@69 101 HB_EXTERN hb_font_t *
jpayne@69 102 hb_ft_font_create (FT_Face ft_face,
jpayne@69 103 hb_destroy_func_t destroy);
jpayne@69 104
jpayne@69 105 /* See notes on hb_ft_face_create_referenced() re lifecycle-management
jpayne@69 106 * issues. */
jpayne@69 107 HB_EXTERN hb_font_t *
jpayne@69 108 hb_ft_font_create_referenced (FT_Face ft_face);
jpayne@69 109
jpayne@69 110 HB_EXTERN FT_Face
jpayne@69 111 hb_ft_font_get_face (hb_font_t *font);
jpayne@69 112
jpayne@69 113 HB_EXTERN FT_Face
jpayne@69 114 hb_ft_font_lock_face (hb_font_t *font);
jpayne@69 115
jpayne@69 116 HB_EXTERN void
jpayne@69 117 hb_ft_font_unlock_face (hb_font_t *font);
jpayne@69 118
jpayne@69 119 HB_EXTERN void
jpayne@69 120 hb_ft_font_set_load_flags (hb_font_t *font, int load_flags);
jpayne@69 121
jpayne@69 122 HB_EXTERN int
jpayne@69 123 hb_ft_font_get_load_flags (hb_font_t *font);
jpayne@69 124
jpayne@69 125 /* Call when size or variations settings on underlying FT_Face change. */
jpayne@69 126 HB_EXTERN void
jpayne@69 127 hb_ft_font_changed (hb_font_t *font);
jpayne@69 128
jpayne@69 129 /* Makes an hb_font_t use FreeType internally to implement font functions.
jpayne@69 130 * Note: this internally creates an FT_Face. Use it when you create your
jpayne@69 131 * hb_face_t using hb_face_create(). */
jpayne@69 132 HB_EXTERN void
jpayne@69 133 hb_ft_font_set_funcs (hb_font_t *font);
jpayne@69 134
jpayne@69 135
jpayne@69 136 HB_END_DECLS
jpayne@69 137
jpayne@69 138 #endif /* HB_FT_H */