18 *
19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 *
25 * Red Hat Author(s): Behdad Esfahbod
26 * Google Author(s): Behdad Esfahbod
27 */
28
29 #include "hb-private.hh"
30
31 #include "hb-ot-layout-private.hh"
32
33 #include "hb-font-private.hh"
34 #include "hb-open-file-private.hh"
35 #include "hb-ot-head-table.hh"
36 #include "hb-ot-maxp-table.hh"
37
38 #include "hb-cache-private.hh"
39
40 #include <string.h>
41
42
43 /*
44 * hb_font_funcs_t
45 */
46
47 static hb_bool_t
48 hb_font_get_font_h_extents_nil (hb_font_t *font,
49 void *font_data HB_UNUSED,
50 hb_font_extents_t *metrics,
51 void *user_data HB_UNUSED)
52 {
53 memset (metrics, 0, sizeof (*metrics));
54 return false;
55 }
56 static hb_bool_t
57 hb_font_get_font_h_extents_parent (hb_font_t *font,
58 void *font_data HB_UNUSED,
59 hb_font_extents_t *metrics,
1150 * Since: 0.9.2
1151 **/
1152 hb_font_t *
1153 hb_font_create_sub_font (hb_font_t *parent)
1154 {
1155 if (unlikely (!parent))
1156 parent = hb_font_get_empty ();
1157
1158 hb_font_t *font = hb_font_create (parent->face);
1159
1160 if (unlikely (hb_object_is_inert (font)))
1161 return font;
1162
1163 font->parent = hb_font_reference (parent);
1164
1165 font->x_scale = parent->x_scale;
1166 font->y_scale = parent->y_scale;
1167 font->x_ppem = parent->x_ppem;
1168 font->y_ppem = parent->y_ppem;
1169
1170 return font;
1171 }
1172
1173 /**
1174 * hb_font_get_empty:
1175 *
1176 *
1177 *
1178 * Return value: (transfer full)
1179 *
1180 * Since: 0.9.2
1181 **/
1182 hb_font_t *
1183 hb_font_get_empty (void)
1184 {
1185 static const hb_font_t _hb_font_nil = {
1186 HB_OBJECT_HEADER_STATIC,
1187
1188 true, /* immutable */
1189
1190 NULL, /* parent */
1191 const_cast<hb_face_t *> (&_hb_face_nil),
1192
1193 1000, /* x_scale */
1194 1000, /* y_scale */
1195
1196 0, /* x_ppem */
1197 0, /* y_ppem */
1198
1199 const_cast<hb_font_funcs_t *> (&_hb_font_funcs_nil), /* klass */
1200 NULL, /* user_data */
1201 NULL, /* destroy */
1202
1203 {
1204 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INVALID,
1205 #include "hb-shaper-list.hh"
1206 #undef HB_SHAPER_IMPLEMENT
1207 }
1208 };
1209
1210 return const_cast<hb_font_t *> (&_hb_font_nil);
1211 }
1212
1213 /**
1214 * hb_font_reference: (skip)
1215 * @font: a font.
1216 *
1217 *
1218 *
1233 *
1234 *
1235 * Since: 0.9.2
1236 **/
1237 void
1238 hb_font_destroy (hb_font_t *font)
1239 {
1240 if (!hb_object_destroy (font)) return;
1241
1242 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, font);
1243 #include "hb-shaper-list.hh"
1244 #undef HB_SHAPER_IMPLEMENT
1245
1246 if (font->destroy)
1247 font->destroy (font->user_data);
1248
1249 hb_font_destroy (font->parent);
1250 hb_face_destroy (font->face);
1251 hb_font_funcs_destroy (font->klass);
1252
1253 free (font);
1254 }
1255
1256 /**
1257 * hb_font_set_user_data: (skip)
1258 * @font: a font.
1259 * @key:
1260 * @data:
1261 * @destroy:
1262 * @replace:
1263 *
1264 *
1265 *
1266 * Return value:
1267 *
1268 * Since: 0.9.2
1269 **/
1270 hb_bool_t
1271 hb_font_set_user_data (hb_font_t *font,
1272 hb_user_data_key_t *key,
1519 font->y_ppem = y_ppem;
1520 }
1521
1522 /**
1523 * hb_font_get_ppem:
1524 * @font: a font.
1525 * @x_ppem: (out):
1526 * @y_ppem: (out):
1527 *
1528 *
1529 *
1530 * Since: 0.9.2
1531 **/
1532 void
1533 hb_font_get_ppem (hb_font_t *font,
1534 unsigned int *x_ppem,
1535 unsigned int *y_ppem)
1536 {
1537 if (x_ppem) *x_ppem = font->x_ppem;
1538 if (y_ppem) *y_ppem = font->y_ppem;
1539 }
1540
1541
1542 #ifndef HB_DISABLE_DEPRECATED
1543
1544 /*
1545 * Deprecated get_glyph_func():
1546 */
1547
1548 struct hb_trampoline_closure_t
1549 {
1550 void *user_data;
1551 hb_destroy_func_t destroy;
1552 unsigned int ref_count;
1553 };
1554
1555 template <typename FuncType>
1556 struct hb_trampoline_t
1557 {
1558 hb_trampoline_closure_t closure; /* Must be first. */
|
18 *
19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 *
25 * Red Hat Author(s): Behdad Esfahbod
26 * Google Author(s): Behdad Esfahbod
27 */
28
29 #include "hb-private.hh"
30
31 #include "hb-ot-layout-private.hh"
32
33 #include "hb-font-private.hh"
34 #include "hb-open-file-private.hh"
35 #include "hb-ot-head-table.hh"
36 #include "hb-ot-maxp-table.hh"
37
38 #include <string.h>
39
40
41 /*
42 * hb_font_funcs_t
43 */
44
45 static hb_bool_t
46 hb_font_get_font_h_extents_nil (hb_font_t *font,
47 void *font_data HB_UNUSED,
48 hb_font_extents_t *metrics,
49 void *user_data HB_UNUSED)
50 {
51 memset (metrics, 0, sizeof (*metrics));
52 return false;
53 }
54 static hb_bool_t
55 hb_font_get_font_h_extents_parent (hb_font_t *font,
56 void *font_data HB_UNUSED,
57 hb_font_extents_t *metrics,
1148 * Since: 0.9.2
1149 **/
1150 hb_font_t *
1151 hb_font_create_sub_font (hb_font_t *parent)
1152 {
1153 if (unlikely (!parent))
1154 parent = hb_font_get_empty ();
1155
1156 hb_font_t *font = hb_font_create (parent->face);
1157
1158 if (unlikely (hb_object_is_inert (font)))
1159 return font;
1160
1161 font->parent = hb_font_reference (parent);
1162
1163 font->x_scale = parent->x_scale;
1164 font->y_scale = parent->y_scale;
1165 font->x_ppem = parent->x_ppem;
1166 font->y_ppem = parent->y_ppem;
1167
1168 /* TODO: copy variation coordinates. */
1169
1170 return font;
1171 }
1172
1173 /**
1174 * hb_font_get_empty:
1175 *
1176 *
1177 *
1178 * Return value: (transfer full)
1179 *
1180 * Since: 0.9.2
1181 **/
1182 hb_font_t *
1183 hb_font_get_empty (void)
1184 {
1185 static const hb_font_t _hb_font_nil = {
1186 HB_OBJECT_HEADER_STATIC,
1187
1188 true, /* immutable */
1189
1190 NULL, /* parent */
1191 const_cast<hb_face_t *> (&_hb_face_nil),
1192
1193 1000, /* x_scale */
1194 1000, /* y_scale */
1195
1196 0, /* x_ppem */
1197 0, /* y_ppem */
1198
1199 0, /* num_coords */
1200 NULL, /* coords */
1201
1202 const_cast<hb_font_funcs_t *> (&_hb_font_funcs_nil), /* klass */
1203 NULL, /* user_data */
1204 NULL, /* destroy */
1205
1206 {
1207 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INVALID,
1208 #include "hb-shaper-list.hh"
1209 #undef HB_SHAPER_IMPLEMENT
1210 }
1211 };
1212
1213 return const_cast<hb_font_t *> (&_hb_font_nil);
1214 }
1215
1216 /**
1217 * hb_font_reference: (skip)
1218 * @font: a font.
1219 *
1220 *
1221 *
1236 *
1237 *
1238 * Since: 0.9.2
1239 **/
1240 void
1241 hb_font_destroy (hb_font_t *font)
1242 {
1243 if (!hb_object_destroy (font)) return;
1244
1245 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, font);
1246 #include "hb-shaper-list.hh"
1247 #undef HB_SHAPER_IMPLEMENT
1248
1249 if (font->destroy)
1250 font->destroy (font->user_data);
1251
1252 hb_font_destroy (font->parent);
1253 hb_face_destroy (font->face);
1254 hb_font_funcs_destroy (font->klass);
1255
1256 free (font->coords);
1257
1258 free (font);
1259 }
1260
1261 /**
1262 * hb_font_set_user_data: (skip)
1263 * @font: a font.
1264 * @key:
1265 * @data:
1266 * @destroy:
1267 * @replace:
1268 *
1269 *
1270 *
1271 * Return value:
1272 *
1273 * Since: 0.9.2
1274 **/
1275 hb_bool_t
1276 hb_font_set_user_data (hb_font_t *font,
1277 hb_user_data_key_t *key,
1524 font->y_ppem = y_ppem;
1525 }
1526
1527 /**
1528 * hb_font_get_ppem:
1529 * @font: a font.
1530 * @x_ppem: (out):
1531 * @y_ppem: (out):
1532 *
1533 *
1534 *
1535 * Since: 0.9.2
1536 **/
1537 void
1538 hb_font_get_ppem (hb_font_t *font,
1539 unsigned int *x_ppem,
1540 unsigned int *y_ppem)
1541 {
1542 if (x_ppem) *x_ppem = font->x_ppem;
1543 if (y_ppem) *y_ppem = font->y_ppem;
1544 }
1545
1546
1547 void
1548 hb_font_set_var_coords_normalized (hb_font_t *font,
1549 int *coords, /* XXX 2.14 normalized */
1550 unsigned int coords_length)
1551 {
1552 if (font->immutable)
1553 return;
1554
1555 /* Skip tail zero entries. */
1556 while (coords_length && !coords[coords_length - 1])
1557 coords_length--;
1558
1559 int *copy = coords_length ? (int *) calloc (coords_length, sizeof (coords[0])) : NULL;
1560 if (unlikely (coords_length && !copy))
1561 return;
1562
1563 free (font->coords);
1564
1565 if (coords_length)
1566 memcpy (copy, coords, coords_length * sizeof (coords[0]));
1567
1568 font->coords = copy;
1569 font->num_coords = coords_length;
1570 }
1571
1572
1573 #ifndef HB_DISABLE_DEPRECATED
1574
1575 /*
1576 * Deprecated get_glyph_func():
1577 */
1578
1579 struct hb_trampoline_closure_t
1580 {
1581 void *user_data;
1582 hb_destroy_func_t destroy;
1583 unsigned int ref_count;
1584 };
1585
1586 template <typename FuncType>
1587 struct hb_trampoline_t
1588 {
1589 hb_trampoline_closure_t closure; /* Must be first. */
|