2 * Copyright © 2009 Red Hat, Inc.
4 * This is part of HarfBuzz, a text shaping library.
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.
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
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.
24 * Red Hat Author(s): Behdad Esfahbod
30 #include "hb-common.h"
36 typedef struct _hb_face_t hb_face_t;
37 typedef struct _hb_font_t hb_font_t;
44 hb_face_create (hb_blob_t *blob,
47 typedef hb_blob_t * (*hb_get_table_func_t) (hb_tag_t tag, void *user_data);
49 /* calls destroy() when not needing user_data anymore */
51 hb_face_create_for_tables (hb_get_table_func_t get_table,
53 hb_destroy_func_t destroy);
56 hb_face_get_empty (void);
59 hb_face_reference (hb_face_t *face);
62 hb_face_destroy (hb_face_t *face);
65 hb_face_set_user_data (hb_face_t *face,
66 hb_user_data_key_t *key,
68 hb_destroy_func_t destroy);
72 hb_face_get_user_data (hb_face_t *face,
73 hb_user_data_key_t *key);
77 hb_face_reference_table (hb_face_t *face,
81 hb_face_get_upem (hb_face_t *face);
88 typedef struct _hb_font_funcs_t hb_font_funcs_t;
91 hb_font_funcs_create (void);
94 hb_font_funcs_get_empty (void);
97 hb_font_funcs_reference (hb_font_funcs_t *ffuncs);
100 hb_font_funcs_destroy (hb_font_funcs_t *ffuncs);
103 hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs,
104 hb_user_data_key_t *key,
106 hb_destroy_func_t destroy);
110 hb_font_funcs_get_user_data (hb_font_funcs_t *ffuncs,
111 hb_user_data_key_t *key);
115 hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs);
118 hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs);
122 typedef struct _hb_glyph_extents_t
124 hb_position_t x_bearing;
125 hb_position_t y_bearing;
127 hb_position_t height;
128 } hb_glyph_extents_t;
131 typedef hb_bool_t (*hb_font_get_contour_point_func_t) (hb_font_t *font, void *font_data,
132 hb_codepoint_t glyph, unsigned int point_index,
133 hb_position_t *x, hb_position_t *y,
135 typedef void (*hb_font_get_glyph_advance_func_t) (hb_font_t *font, void *font_data,
136 hb_codepoint_t glyph,
137 hb_position_t *x_advance, hb_position_t *y_advance,
139 typedef void (*hb_font_get_glyph_extents_func_t) (hb_font_t *font, void *font_data,
140 hb_codepoint_t glyph,
141 hb_glyph_extents_t *extents,
143 typedef hb_codepoint_t (*hb_font_get_glyph_func_t) (hb_font_t *font, void *font_data,
144 hb_codepoint_t unicode, hb_codepoint_t variation_selector,
146 typedef void (*hb_font_get_kerning_func_t) (hb_font_t *font, void *font_data,
147 hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
148 hb_position_t *x_kern, hb_position_t *y_kern,
153 hb_font_funcs_set_contour_point_func (hb_font_funcs_t *ffuncs,
154 hb_font_get_contour_point_func_t contour_point_func,
155 void *user_data, hb_destroy_func_t destroy);
158 hb_font_funcs_set_glyph_advance_func (hb_font_funcs_t *ffuncs,
159 hb_font_get_glyph_advance_func_t glyph_advance_func,
160 void *user_data, hb_destroy_func_t destroy);
163 hb_font_funcs_set_glyph_extents_func (hb_font_funcs_t *ffuncs,
164 hb_font_get_glyph_extents_func_t glyph_extents_func,
165 void *user_data, hb_destroy_func_t destroy);
168 hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs,
169 hb_font_get_glyph_func_t glyph_func,
170 void *user_data, hb_destroy_func_t destroy);
173 hb_font_funcs_set_kerning_func (hb_font_funcs_t *ffuncs,
174 hb_font_get_kerning_func_t kerning_func,
175 void *user_data, hb_destroy_func_t destroy);
179 hb_font_get_contour_point (hb_font_t *font,
180 hb_codepoint_t glyph, unsigned int point_index,
181 hb_position_t *x, hb_position_t *y);
184 hb_font_get_glyph_advance (hb_font_t *font,
185 hb_codepoint_t glyph,
186 hb_position_t *x_advance, hb_position_t *y_advance);
189 hb_font_get_glyph_extents (hb_font_t *font,
190 hb_codepoint_t glyph,
191 hb_glyph_extents_t *extents);
194 hb_font_get_glyph (hb_font_t *font,
195 hb_codepoint_t unicode, hb_codepoint_t variation_selector);
198 hb_font_get_kerning (hb_font_t *font,
199 hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
200 hb_position_t *x_kern, hb_position_t *y_kern);
207 /* Fonts are very light-weight objects */
210 hb_font_create (hb_face_t *face);
213 hb_font_create_sub_font (hb_font_t *parent);
216 hb_font_get_empty (void);
219 hb_font_reference (hb_font_t *font);
222 hb_font_destroy (hb_font_t *font);
225 hb_font_set_user_data (hb_font_t *font,
226 hb_user_data_key_t *key,
228 hb_destroy_func_t destroy);
232 hb_font_get_user_data (hb_font_t *font,
233 hb_user_data_key_t *key);
236 hb_font_make_immutable (hb_font_t *font);
239 hb_font_is_immutable (hb_font_t *font);
242 hb_font_get_parent (hb_font_t *font);
245 hb_font_get_face (hb_font_t *font);
249 hb_font_set_funcs (hb_font_t *font,
250 hb_font_funcs_t *klass,
252 hb_destroy_func_t destroy);
256 * We should add support for full matrices.
259 hb_font_set_scale (hb_font_t *font,
264 hb_font_get_scale (hb_font_t *font,
269 * A zero value means "no hinting in that direction"
272 hb_font_set_ppem (hb_font_t *font,
274 unsigned int y_ppem);
277 hb_font_get_ppem (hb_font_t *font,
278 unsigned int *x_ppem,
279 unsigned int *y_ppem);
284 #endif /* HB_FONT_H */