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_face_t *face, 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);
76 hb_face_make_immutable (hb_face_t *face);
79 hb_face_is_immutable (hb_face_t *face);
83 hb_face_reference_table (hb_face_t *face,
87 hb_face_get_upem (hb_face_t *face);
94 typedef struct _hb_font_funcs_t hb_font_funcs_t;
97 hb_font_funcs_create (void);
100 hb_font_funcs_get_empty (void);
103 hb_font_funcs_reference (hb_font_funcs_t *ffuncs);
106 hb_font_funcs_destroy (hb_font_funcs_t *ffuncs);
109 hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs,
110 hb_user_data_key_t *key,
112 hb_destroy_func_t destroy);
116 hb_font_funcs_get_user_data (hb_font_funcs_t *ffuncs,
117 hb_user_data_key_t *key);
121 hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs);
124 hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs);
128 typedef struct _hb_glyph_extents_t
130 hb_position_t x_bearing;
131 hb_position_t y_bearing;
133 hb_position_t height;
134 } hb_glyph_extents_t;
137 typedef hb_bool_t (*hb_font_get_contour_point_func_t) (hb_font_t *font, void *font_data,
138 hb_codepoint_t glyph, unsigned int point_index,
139 hb_position_t *x, hb_position_t *y,
141 typedef void (*hb_font_get_glyph_advance_func_t) (hb_font_t *font, void *font_data,
142 hb_codepoint_t glyph,
143 hb_position_t *x_advance, hb_position_t *y_advance,
145 typedef void (*hb_font_get_glyph_extents_func_t) (hb_font_t *font, void *font_data,
146 hb_codepoint_t glyph,
147 hb_glyph_extents_t *extents,
149 typedef hb_bool_t (*hb_font_get_glyph_func_t) (hb_font_t *font, void *font_data,
150 hb_codepoint_t unicode, hb_codepoint_t variation_selector,
151 hb_codepoint_t *glyph,
153 typedef void (*hb_font_get_kerning_func_t) (hb_font_t *font, void *font_data,
154 hb_codepoint_t left_glyph, hb_codepoint_t right_glyph,
155 hb_position_t *x_kern, hb_position_t *y_kern,
160 hb_font_funcs_set_contour_point_func (hb_font_funcs_t *ffuncs,
161 hb_font_get_contour_point_func_t contour_point_func,
162 void *user_data, hb_destroy_func_t destroy);
165 hb_font_funcs_set_glyph_advance_func (hb_font_funcs_t *ffuncs,
166 hb_font_get_glyph_advance_func_t glyph_advance_func,
167 void *user_data, hb_destroy_func_t destroy);
170 hb_font_funcs_set_glyph_extents_func (hb_font_funcs_t *ffuncs,
171 hb_font_get_glyph_extents_func_t glyph_extents_func,
172 void *user_data, hb_destroy_func_t destroy);
175 hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs,
176 hb_font_get_glyph_func_t glyph_func,
177 void *user_data, hb_destroy_func_t destroy);
180 hb_font_funcs_set_kerning_func (hb_font_funcs_t *ffuncs,
181 hb_font_get_kerning_func_t kerning_func,
182 void *user_data, hb_destroy_func_t destroy);
186 hb_font_get_contour_point (hb_font_t *font,
187 hb_codepoint_t glyph, unsigned int point_index,
188 hb_position_t *x, hb_position_t *y);
191 hb_font_get_glyph_advance (hb_font_t *font,
192 hb_codepoint_t glyph,
193 hb_position_t *x_advance, hb_position_t *y_advance);
196 hb_font_get_glyph_extents (hb_font_t *font,
197 hb_codepoint_t glyph,
198 hb_glyph_extents_t *extents);
201 hb_font_get_glyph (hb_font_t *font,
202 hb_codepoint_t unicode, hb_codepoint_t variation_selector,
203 hb_codepoint_t *glyph);
206 hb_font_get_kerning (hb_font_t *font,
207 hb_codepoint_t left_glyph, hb_codepoint_t right_glyph,
208 hb_position_t *x_kern, hb_position_t *y_kern);
215 /* Fonts are very light-weight objects */
218 hb_font_create (hb_face_t *face);
221 hb_font_create_sub_font (hb_font_t *parent);
224 hb_font_get_empty (void);
227 hb_font_reference (hb_font_t *font);
230 hb_font_destroy (hb_font_t *font);
233 hb_font_set_user_data (hb_font_t *font,
234 hb_user_data_key_t *key,
236 hb_destroy_func_t destroy);
240 hb_font_get_user_data (hb_font_t *font,
241 hb_user_data_key_t *key);
244 hb_font_make_immutable (hb_font_t *font);
247 hb_font_is_immutable (hb_font_t *font);
250 hb_font_get_parent (hb_font_t *font);
253 hb_font_get_face (hb_font_t *font);
257 hb_font_set_funcs (hb_font_t *font,
258 hb_font_funcs_t *klass,
260 hb_destroy_func_t destroy);
264 * We should add support for full matrices.
267 hb_font_set_scale (hb_font_t *font,
272 hb_font_get_scale (hb_font_t *font,
277 * A zero value means "no hinting in that direction"
280 hb_font_set_ppem (hb_font_t *font,
282 unsigned int y_ppem);
285 hb_font_get_ppem (hb_font_t *font,
286 unsigned int *x_ppem,
287 unsigned int *y_ppem);
292 #endif /* HB_FONT_H */