| File: | root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c |
| Warning: | line 1649, column 6 Value stored to 'status' is never read |
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| 1 | /* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */ |
| 2 | /* |
| 3 | * Copyright © 2005 Keith Packard |
| 4 | * |
| 5 | * This library is free software; you can redistribute it and/or |
| 6 | * modify it either under the terms of the GNU Lesser General Public |
| 7 | * License version 2.1 as published by the Free Software Foundation |
| 8 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
| 9 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
| 10 | * notice, a recipient may use your version of this file under either |
| 11 | * the MPL or the LGPL. |
| 12 | * |
| 13 | * You should have received a copy of the LGPL along with this library |
| 14 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
| 15 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
| 16 | * You should have received a copy of the MPL along with this library |
| 17 | * in the file COPYING-MPL-1.1 |
| 18 | * |
| 19 | * The contents of this file are subject to the Mozilla Public License |
| 20 | * Version 1.1 (the "License"); you may not use this file except in |
| 21 | * compliance with the License. You may obtain a copy of the License at |
| 22 | * http://www.mozilla.org/MPL/ |
| 23 | * |
| 24 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
| 25 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
| 26 | * the specific language governing rights and limitations. |
| 27 | * |
| 28 | * The Original Code is the cairo graphics library. |
| 29 | * |
| 30 | * The Initial Developer of the Original Code is Keith Packard |
| 31 | * |
| 32 | * Contributor(s): |
| 33 | * Keith Packard <keithp@keithp.com> |
| 34 | * Carl D. Worth <cworth@cworth.org> |
| 35 | * Graydon Hoare <graydon@redhat.com> |
| 36 | * Owen Taylor <otaylor@redhat.com> |
| 37 | * Behdad Esfahbod <behdad@behdad.org> |
| 38 | * Chris Wilson <chris@chris-wilson.co.uk> |
| 39 | */ |
| 40 | |
| 41 | #include "cairoint.h" |
| 42 | #include "cairo-array-private.h" |
| 43 | #include "cairo-error-private.h" |
| 44 | #include "cairo-image-surface-private.h" |
| 45 | #include "cairo-list-inline.h" |
| 46 | #include "cairo-pattern-private.h" |
| 47 | #include "cairo-scaled-font-private.h" |
| 48 | #include "cairo-surface-backend-private.h" |
| 49 | |
| 50 | /** |
| 51 | * SECTION:cairo-scaled-font |
| 52 | * @Title: cairo_scaled_font_t |
| 53 | * @Short_Description: Font face at particular size and options |
| 54 | * @See_Also: #cairo_font_face_t, #cairo_matrix_t, #cairo_font_options_t |
| 55 | * |
| 56 | * #cairo_scaled_font_t represents a realization of a font face at a particular |
| 57 | * size and transformation and a certain set of font options. |
| 58 | **/ |
| 59 | |
| 60 | static uintptr_t |
| 61 | _cairo_scaled_font_compute_hash (cairo_scaled_font_t *scaled_font); |
| 62 | |
| 63 | /* Global Glyph Cache |
| 64 | * |
| 65 | * We maintain a global pool of glyphs split between all active fonts. This |
| 66 | * allows a heavily used individual font to cache more glyphs than we could |
| 67 | * manage if we used per-font glyph caches, but at the same time maintains |
| 68 | * fairness across all fonts and provides a cap on the maximum number of |
| 69 | * global glyphs. |
| 70 | * |
| 71 | * The glyphs are allocated in pages, which are capped in the global pool. |
| 72 | * Using pages means we can reduce the frequency at which we have to probe the |
| 73 | * global pool and ameliorates the memory allocation pressure. |
| 74 | */ |
| 75 | |
| 76 | /* XXX: This number is arbitrary---we've never done any measurement of this. */ |
| 77 | #define MAX_GLYPH_PAGES_CACHED512 512 |
| 78 | static cairo_cache_t cairo_scaled_glyph_page_cache; |
| 79 | |
| 80 | #define CAIRO_SCALED_GLYPH_PAGE_SIZE32 32 |
| 81 | struct _cairo_scaled_glyph_page { |
| 82 | cairo_cache_entry_t cache_entry; |
| 83 | cairo_scaled_font_t *scaled_font; |
| 84 | cairo_list_t link; |
| 85 | |
| 86 | unsigned int num_glyphs; |
| 87 | cairo_scaled_glyph_t glyphs[CAIRO_SCALED_GLYPH_PAGE_SIZE32]; |
| 88 | }; |
| 89 | |
| 90 | /* |
| 91 | * Notes: |
| 92 | * |
| 93 | * To store rasterizations of glyphs, we use an image surface and the |
| 94 | * device offset to represent the glyph origin. |
| 95 | * |
| 96 | * A device_transform converts from device space (a conceptual space) to |
| 97 | * surface space. For simple cases of translation only, it's called a |
| 98 | * device_offset and is public API (cairo_surface_[gs]et_device_offset()). |
| 99 | * A possibly better name for those functions could have been |
| 100 | * cairo_surface_[gs]et_origin(). So, that's what they do: they set where |
| 101 | * the device-space origin (0,0) is in the surface. If the origin is inside |
| 102 | * the surface, device_offset values are positive. It may look like this: |
| 103 | * |
| 104 | * Device space: |
| 105 | * (-x,-y) <-- negative numbers |
| 106 | * +----------------+ |
| 107 | * | . | |
| 108 | * | . | |
| 109 | * |......(0,0) <---|-- device-space origin |
| 110 | * | | |
| 111 | * | | |
| 112 | * +----------------+ |
| 113 | * (width-x,height-y) |
| 114 | * |
| 115 | * Surface space: |
| 116 | * (0,0) <-- surface-space origin |
| 117 | * +---------------+ |
| 118 | * | . | |
| 119 | * | . | |
| 120 | * |......(x,y) <--|-- device_offset |
| 121 | * | | |
| 122 | * | | |
| 123 | * +---------------+ |
| 124 | * (width,height) |
| 125 | * |
| 126 | * In other words: device_offset is the coordinates of the device-space |
| 127 | * origin relative to the top-left of the surface. |
| 128 | * |
| 129 | * We use device offsets in a couple of places: |
| 130 | * |
| 131 | * - Public API: To let toolkits like Gtk+ give user a surface that |
| 132 | * only represents part of the final destination (say, the expose |
| 133 | * area), but has the same device space as the destination. In these |
| 134 | * cases device_offset is typically negative. Example: |
| 135 | * |
| 136 | * application window |
| 137 | * +---------------+ |
| 138 | * | . | |
| 139 | * | (x,y). | |
| 140 | * |......+---+ | |
| 141 | * | | | <--|-- expose area |
| 142 | * | +---+ | |
| 143 | * +---------------+ |
| 144 | * |
| 145 | * In this case, the user of cairo API can set the device_space on |
| 146 | * the expose area to (-x,-y) to move the device space origin to that |
| 147 | * of the application window, such that drawing in the expose area |
| 148 | * surface and painting it in the application window has the same |
| 149 | * effect as drawing in the application window directly. Gtk+ has |
| 150 | * been using this feature. |
| 151 | * |
| 152 | * - Glyph surfaces: In most font rendering systems, glyph surfaces |
| 153 | * have an origin at (0,0) and a bounding box that is typically |
| 154 | * represented as (x_bearing,y_bearing,width,height). Depending on |
| 155 | * which way y progresses in the system, y_bearing may typically be |
| 156 | * negative (for systems similar to cairo, with origin at top left), |
| 157 | * or be positive (in systems like PDF with origin at bottom left). |
| 158 | * No matter which is the case, it is important to note that |
| 159 | * (x_bearing,y_bearing) is the coordinates of top-left of the glyph |
| 160 | * relative to the glyph origin. That is, for example: |
| 161 | * |
| 162 | * Scaled-glyph space: |
| 163 | * |
| 164 | * (x_bearing,y_bearing) <-- negative numbers |
| 165 | * +----------------+ |
| 166 | * | . | |
| 167 | * | . | |
| 168 | * |......(0,0) <---|-- glyph origin |
| 169 | * | | |
| 170 | * | | |
| 171 | * +----------------+ |
| 172 | * (width+x_bearing,height+y_bearing) |
| 173 | * |
| 174 | * Note the similarity of the origin to the device space. That is |
| 175 | * exactly how we use the device_offset to represent scaled glyphs: |
| 176 | * to use the device-space origin as the glyph origin. |
| 177 | * |
| 178 | * Now compare the scaled-glyph space to device-space and surface-space |
| 179 | * and convince yourself that: |
| 180 | * |
| 181 | * (x_bearing,y_bearing) = (-x,-y) = - device_offset |
| 182 | * |
| 183 | * That's right. If you are not convinced yet, contrast the definition |
| 184 | * of the two: |
| 185 | * |
| 186 | * "(x_bearing,y_bearing) is the coordinates of top-left of the |
| 187 | * glyph relative to the glyph origin." |
| 188 | * |
| 189 | * "In other words: device_offset is the coordinates of the |
| 190 | * device-space origin relative to the top-left of the surface." |
| 191 | * |
| 192 | * and note that glyph origin = device-space origin. |
| 193 | */ |
| 194 | |
| 195 | static void |
| 196 | _cairo_scaled_font_fini_internal (cairo_scaled_font_t *scaled_font); |
| 197 | |
| 198 | static void |
| 199 | _cairo_scaled_glyph_fini (cairo_scaled_font_t *scaled_font, |
| 200 | cairo_scaled_glyph_t *scaled_glyph) |
| 201 | { |
| 202 | while (! cairo_list_is_empty (&scaled_glyph->dev_privates)) { |
| 203 | cairo_scaled_glyph_private_t *private = |
| 204 | cairo_list_first_entry (&scaled_glyph->dev_privates,({ const __typeof__ (((cairo_scaled_glyph_private_t *) 0)-> link) *mptr__ = ((&scaled_glyph->dev_privates)->next ); (cairo_scaled_glyph_private_t *) ((char *) mptr__ - __builtin_offsetof (cairo_scaled_glyph_private_t, link)); }) |
| 205 | cairo_scaled_glyph_private_t,({ const __typeof__ (((cairo_scaled_glyph_private_t *) 0)-> link) *mptr__ = ((&scaled_glyph->dev_privates)->next ); (cairo_scaled_glyph_private_t *) ((char *) mptr__ - __builtin_offsetof (cairo_scaled_glyph_private_t, link)); }) |
| 206 | link)({ const __typeof__ (((cairo_scaled_glyph_private_t *) 0)-> link) *mptr__ = ((&scaled_glyph->dev_privates)->next ); (cairo_scaled_glyph_private_t *) ((char *) mptr__ - __builtin_offsetof (cairo_scaled_glyph_private_t, link)); }); |
| 207 | private->destroy (private, scaled_glyph, scaled_font); |
| 208 | } |
| 209 | |
| 210 | _cairo_image_scaled_glyph_fini (scaled_font, scaled_glyph); |
| 211 | |
| 212 | if (scaled_glyph->surface != NULL((void*)0)) |
| 213 | cairo_surface_destroy_moz_cairo_surface_destroy (&scaled_glyph->surface->base); |
| 214 | |
| 215 | if (scaled_glyph->path != NULL((void*)0)) |
| 216 | _cairo_path_fixed_destroy (scaled_glyph->path); |
| 217 | |
| 218 | if (scaled_glyph->recording_surface != NULL((void*)0)) { |
| 219 | cairo_status_t status; |
| 220 | |
| 221 | /* If the recording surface contains other fonts, destroying |
| 222 | * it while holding _cairo_scaled_glyph_page_cache_mutex will |
| 223 | * result in deadlock when the recording surface font is |
| 224 | * destroyed. Instead, move the recording surface to a list of |
| 225 | * surfaces to free and free it in |
| 226 | * _cairo_scaled_font_thaw_cache() after |
| 227 | * _cairo_scaled_glyph_page_cache_mutex is unlocked. */ |
| 228 | status = _cairo_array_append (&scaled_font->recording_surfaces_to_free, &scaled_glyph->recording_surface); |
| 229 | assert (status == CAIRO_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_STATUS_SUCCESS) ? 1 : 0), __extension__ ({ if (status == CAIRO_STATUS_SUCCESS) ; else __assert_fail ( "status == CAIRO_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 229, __extension__ __PRETTY_FUNCTION__); })); |
| 230 | } |
| 231 | |
| 232 | if (scaled_glyph->color_surface != NULL((void*)0)) |
| 233 | cairo_surface_destroy_moz_cairo_surface_destroy (&scaled_glyph->color_surface->base); |
| 234 | } |
| 235 | |
| 236 | #define ZOMBIE0 0 |
| 237 | static const cairo_scaled_font_t _cairo_scaled_font_nil = { |
| 238 | { ZOMBIE0 }, /* hash_entry */ |
| 239 | CAIRO_STATUS_NO_MEMORY, /* status */ |
| 240 | CAIRO_REFERENCE_COUNT_INVALID{((cairo_atomic_int_t) -1)}, /* ref_count */ |
| 241 | { 0, 0, 0, NULL((void*)0) }, /* user_data */ |
| 242 | NULL((void*)0), /* original_font_face */ |
| 243 | NULL((void*)0), /* font_face */ |
| 244 | { 1., 0., 0., 1., 0, 0}, /* font_matrix */ |
| 245 | { 1., 0., 0., 1., 0, 0}, /* ctm */ |
| 246 | { CAIRO_ANTIALIAS_DEFAULT, /* options */ |
| 247 | CAIRO_SUBPIXEL_ORDER_DEFAULT, |
| 248 | CAIRO_HINT_STYLE_DEFAULT, |
| 249 | CAIRO_HINT_METRICS_DEFAULT} , |
| 250 | FALSE0, /* placeholder */ |
| 251 | FALSE0, /* holdover */ |
| 252 | TRUE1, /* finished */ |
| 253 | { 1., 0., 0., 1., 0, 0}, /* scale */ |
| 254 | { 1., 0., 0., 1., 0, 0}, /* scale_inverse */ |
| 255 | 1., /* max_scale */ |
| 256 | { 0., 0., 0., 0., 0. }, /* extents */ |
| 257 | { 0., 0., 0., 0., 0. }, /* fs_extents */ |
| 258 | CAIRO_MUTEX_NIL_INITIALIZER{ { 0, 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, 0, { 0, 0 } } },/* mutex */ |
| 259 | NULL((void*)0), /* glyphs */ |
| 260 | { NULL((void*)0), NULL((void*)0) }, /* pages */ |
| 261 | FALSE0, /* cache_frozen */ |
| 262 | FALSE0, /* global_cache_frozen */ |
| 263 | { 0, 0, sizeof(cairo_surface_t*), NULL((void*)0) }, /* recording_surfaces_to_free */ |
| 264 | { NULL((void*)0), NULL((void*)0) }, /* privates */ |
| 265 | NULL((void*)0) /* backend */ |
| 266 | }; |
| 267 | |
| 268 | /** |
| 269 | * _cairo_scaled_font_set_error: |
| 270 | * @scaled_font: a scaled_font |
| 271 | * @status: a status value indicating an error |
| 272 | * |
| 273 | * Atomically sets scaled_font->status to @status and calls _cairo_error; |
| 274 | * Does nothing if status is %CAIRO_STATUS_SUCCESS. |
| 275 | * |
| 276 | * All assignments of an error status to scaled_font->status should happen |
| 277 | * through _cairo_scaled_font_set_error(). Note that due to the nature of |
| 278 | * the atomic operation, it is not safe to call this function on the nil |
| 279 | * objects. |
| 280 | * |
| 281 | * The purpose of this function is to allow the user to set a |
| 282 | * breakpoint in _cairo_error() to generate a stack trace for when the |
| 283 | * user causes cairo to detect an error. |
| 284 | * |
| 285 | * Return value: the error status. |
| 286 | **/ |
| 287 | cairo_status_t |
| 288 | _cairo_scaled_font_set_error (cairo_scaled_font_t *scaled_font, |
| 289 | cairo_status_t status) |
| 290 | { |
| 291 | if (status == CAIRO_STATUS_SUCCESS) |
| 292 | return status; |
| 293 | |
| 294 | /* Don't overwrite an existing error. This preserves the first |
| 295 | * error, which is the most significant. */ |
| 296 | _cairo_status_set_error (&scaled_font->status, status)do { int ret__; ((void) sizeof ((status < CAIRO_STATUS_LAST_STATUS ) ? 1 : 0), __extension__ ({ if (status < CAIRO_STATUS_LAST_STATUS ) ; else __assert_fail ("status < CAIRO_STATUS_LAST_STATUS" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 296, __extension__ __PRETTY_FUNCTION__); })); ((void) sizeof ((sizeof(*&scaled_font->status) == sizeof(cairo_atomic_int_t )) ? 1 : 0), __extension__ ({ if (sizeof(*&scaled_font-> status) == sizeof(cairo_atomic_int_t)) ; else __assert_fail ( "sizeof(*&scaled_font->status) == sizeof(cairo_atomic_int_t)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 296, __extension__ __PRETTY_FUNCTION__); })); ret__ = _cairo_atomic_int_cmpxchg_impl ((cairo_atomic_int_t *) &scaled_font->status, CAIRO_STATUS_SUCCESS , status); (void) ret__; } while (0); |
| 297 | |
| 298 | return _cairo_error (status); |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * cairo_scaled_font_get_type: |
| 303 | * @scaled_font: a #cairo_scaled_font_t |
| 304 | * |
| 305 | * This function returns the type of the backend used to create |
| 306 | * a scaled font. See #cairo_font_type_t for available types. |
| 307 | * However, this function never returns %CAIRO_FONT_TYPE_TOY. |
| 308 | * |
| 309 | * Return value: The type of @scaled_font. |
| 310 | * |
| 311 | * Since: 1.2 |
| 312 | **/ |
| 313 | cairo_font_type_t |
| 314 | cairo_scaled_font_get_type_moz_cairo_scaled_font_get_type (cairo_scaled_font_t *scaled_font) |
| 315 | { |
| 316 | if (CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)(_cairo_atomic_int_get (&(&scaled_font->ref_count) ->ref_count) == ((cairo_atomic_int_t) -1))) |
| 317 | return CAIRO_FONT_TYPE_TOY; |
| 318 | |
| 319 | return scaled_font->backend->type; |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * cairo_scaled_font_status: |
| 324 | * @scaled_font: a #cairo_scaled_font_t |
| 325 | * |
| 326 | * Checks whether an error has previously occurred for this |
| 327 | * scaled_font. |
| 328 | * |
| 329 | * Return value: %CAIRO_STATUS_SUCCESS or another error such as |
| 330 | * %CAIRO_STATUS_NO_MEMORY. |
| 331 | * |
| 332 | * Since: 1.0 |
| 333 | **/ |
| 334 | cairo_status_t |
| 335 | cairo_scaled_font_status_moz_cairo_scaled_font_status (cairo_scaled_font_t *scaled_font) |
| 336 | { |
| 337 | return scaled_font->status; |
| 338 | } |
| 339 | |
| 340 | /* Here we keep a unique mapping from |
| 341 | * font_face/matrix/ctm/font_options => #cairo_scaled_font_t. |
| 342 | * |
| 343 | * Here are the things that we want to map: |
| 344 | * |
| 345 | * a) All otherwise referenced #cairo_scaled_font_t's |
| 346 | * b) Some number of not otherwise referenced #cairo_scaled_font_t's |
| 347 | * |
| 348 | * The implementation uses a hash table which covers (a) |
| 349 | * completely. Then, for (b) we have an array of otherwise |
| 350 | * unreferenced fonts (holdovers) which are expired in |
| 351 | * least-recently-used order. |
| 352 | * |
| 353 | * The cairo_scaled_font_create() code gets to treat this like a regular |
| 354 | * hash table. All of the magic for the little holdover cache is in |
| 355 | * cairo_scaled_font_reference() and cairo_scaled_font_destroy(). |
| 356 | */ |
| 357 | |
| 358 | /* This defines the size of the holdover array ... that is, the number |
| 359 | * of scaled fonts we keep around even when not otherwise referenced |
| 360 | */ |
| 361 | #define CAIRO_SCALED_FONT_MAX_HOLDOVERS256 256 |
| 362 | |
| 363 | typedef struct _cairo_scaled_font_map { |
| 364 | cairo_scaled_font_t *mru_scaled_font; |
| 365 | cairo_hash_table_t *hash_table; |
| 366 | cairo_scaled_font_t *holdovers[CAIRO_SCALED_FONT_MAX_HOLDOVERS256]; |
| 367 | int num_holdovers; |
| 368 | } cairo_scaled_font_map_t; |
| 369 | |
| 370 | static cairo_scaled_font_map_t *cairo_scaled_font_map; |
| 371 | |
| 372 | static int |
| 373 | _cairo_scaled_font_keys_equal (const void *abstract_key_a, const void *abstract_key_b); |
| 374 | |
| 375 | static cairo_scaled_font_map_t * |
| 376 | _cairo_scaled_font_map_lock (void) |
| 377 | { |
| 378 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex)pthread_mutex_lock (&(_cairo_scaled_font_map_mutex)); |
| 379 | |
| 380 | if (cairo_scaled_font_map == NULL((void*)0)) { |
| 381 | cairo_scaled_font_map = _cairo_malloc (sizeof (cairo_scaled_font_map_t))((sizeof (cairo_scaled_font_map_t)) != 0 ? malloc(sizeof (cairo_scaled_font_map_t )) : ((void*)0)); |
| 382 | if (unlikely (cairo_scaled_font_map == NULL)(__builtin_expect (!!(cairo_scaled_font_map == ((void*)0)), 0 ))) |
| 383 | goto CLEANUP_MUTEX_LOCK; |
| 384 | |
| 385 | cairo_scaled_font_map->mru_scaled_font = NULL((void*)0); |
| 386 | cairo_scaled_font_map->hash_table = |
| 387 | _cairo_hash_table_create (_cairo_scaled_font_keys_equal); |
| 388 | |
| 389 | if (unlikely (cairo_scaled_font_map->hash_table == NULL)(__builtin_expect (!!(cairo_scaled_font_map->hash_table == ((void*)0)), 0))) |
| 390 | goto CLEANUP_SCALED_FONT_MAP; |
| 391 | |
| 392 | cairo_scaled_font_map->num_holdovers = 0; |
| 393 | } |
| 394 | |
| 395 | return cairo_scaled_font_map; |
| 396 | |
| 397 | CLEANUP_SCALED_FONT_MAP: |
| 398 | free (cairo_scaled_font_map); |
| 399 | cairo_scaled_font_map = NULL((void*)0); |
| 400 | CLEANUP_MUTEX_LOCK: |
| 401 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex)pthread_mutex_unlock (&(_cairo_scaled_font_map_mutex)); |
| 402 | _cairo_error_throw (CAIRO_STATUS_NO_MEMORY)do { cairo_status_t status__ = _cairo_error (CAIRO_STATUS_NO_MEMORY ); (void) status__; } while (0); |
| 403 | return NULL((void*)0); |
| 404 | } |
| 405 | |
| 406 | static void |
| 407 | _cairo_scaled_font_map_unlock (void) |
| 408 | { |
| 409 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex)pthread_mutex_unlock (&(_cairo_scaled_font_map_mutex)); |
| 410 | } |
| 411 | |
| 412 | void |
| 413 | _cairo_scaled_font_map_destroy (void) |
| 414 | { |
| 415 | cairo_scaled_font_map_t *font_map; |
| 416 | cairo_scaled_font_t *scaled_font; |
| 417 | |
| 418 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex)pthread_mutex_lock (&(_cairo_scaled_font_map_mutex)); |
| 419 | |
| 420 | font_map = cairo_scaled_font_map; |
| 421 | if (unlikely (font_map == NULL)(__builtin_expect (!!(font_map == ((void*)0)), 0))) { |
| 422 | goto CLEANUP_MUTEX_LOCK; |
| 423 | } |
| 424 | |
| 425 | scaled_font = font_map->mru_scaled_font; |
| 426 | if (scaled_font != NULL((void*)0)) { |
| 427 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex)pthread_mutex_unlock (&(_cairo_scaled_font_map_mutex)); |
| 428 | cairo_scaled_font_destroy_moz_cairo_scaled_font_destroy (scaled_font); |
| 429 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex)pthread_mutex_lock (&(_cairo_scaled_font_map_mutex)); |
| 430 | } |
| 431 | |
| 432 | /* remove scaled_fonts starting from the end so that font_map->holdovers |
| 433 | * is always in a consistent state when we release the mutex. */ |
| 434 | while (font_map->num_holdovers) { |
| 435 | scaled_font = font_map->holdovers[font_map->num_holdovers-1]; |
| 436 | assert (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count))((void) sizeof ((! (_cairo_atomic_int_get (&(&scaled_font ->ref_count)->ref_count) > 0)) ? 1 : 0), __extension__ ({ if (! (_cairo_atomic_int_get (&(&scaled_font-> ref_count)->ref_count) > 0)) ; else __assert_fail ("! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 436, __extension__ __PRETTY_FUNCTION__); })); |
| 437 | _cairo_hash_table_remove (font_map->hash_table, |
| 438 | &scaled_font->hash_entry); |
| 439 | |
| 440 | font_map->num_holdovers--; |
| 441 | |
| 442 | /* This releases the font_map lock to avoid the possibility of a |
| 443 | * recursive deadlock when the scaled font destroy closure gets |
| 444 | * called |
| 445 | */ |
| 446 | _cairo_scaled_font_fini (scaled_font); |
| 447 | |
| 448 | free (scaled_font); |
| 449 | } |
| 450 | |
| 451 | _cairo_hash_table_destroy (font_map->hash_table); |
| 452 | |
| 453 | free (cairo_scaled_font_map); |
| 454 | cairo_scaled_font_map = NULL((void*)0); |
| 455 | |
| 456 | CLEANUP_MUTEX_LOCK: |
| 457 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex)pthread_mutex_unlock (&(_cairo_scaled_font_map_mutex)); |
| 458 | } |
| 459 | |
| 460 | static void |
| 461 | _cairo_scaled_glyph_page_destroy (cairo_scaled_font_t *scaled_font, |
| 462 | cairo_scaled_glyph_page_t *page) |
| 463 | { |
| 464 | unsigned int n; |
| 465 | |
| 466 | assert (!scaled_font->cache_frozen)((void) sizeof ((!scaled_font->cache_frozen) ? 1 : 0), __extension__ ({ if (!scaled_font->cache_frozen) ; else __assert_fail ( "!scaled_font->cache_frozen", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 466, __extension__ __PRETTY_FUNCTION__); })); |
| 467 | assert (!scaled_font->global_cache_frozen)((void) sizeof ((!scaled_font->global_cache_frozen) ? 1 : 0 ), __extension__ ({ if (!scaled_font->global_cache_frozen) ; else __assert_fail ("!scaled_font->global_cache_frozen" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 467, __extension__ __PRETTY_FUNCTION__); })); |
| 468 | |
| 469 | for (n = 0; n < page->num_glyphs; n++) { |
| 470 | _cairo_hash_table_remove (scaled_font->glyphs, |
| 471 | &page->glyphs[n].hash_entry); |
| 472 | _cairo_scaled_glyph_fini (scaled_font, &page->glyphs[n]); |
| 473 | } |
| 474 | |
| 475 | cairo_list_del (&page->link); |
| 476 | free (page); |
| 477 | } |
| 478 | |
| 479 | static void |
| 480 | _cairo_scaled_glyph_page_pluck (void *closure) |
| 481 | { |
| 482 | cairo_scaled_glyph_page_t *page = closure; |
| 483 | cairo_scaled_font_t *scaled_font; |
| 484 | |
| 485 | assert (! cairo_list_is_empty (&page->link))((void) sizeof ((! cairo_list_is_empty (&page->link)) ? 1 : 0), __extension__ ({ if (! cairo_list_is_empty (&page ->link)) ; else __assert_fail ("! cairo_list_is_empty (&page->link)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 485, __extension__ __PRETTY_FUNCTION__); })); |
| 486 | |
| 487 | scaled_font = page->scaled_font; |
| 488 | |
| 489 | /* The font is locked in _cairo_scaled_glyph_page_can_remove () */ |
| 490 | _cairo_scaled_glyph_page_destroy (scaled_font, page); |
| 491 | CAIRO_MUTEX_UNLOCK (scaled_font->mutex)pthread_mutex_unlock (&(scaled_font->mutex)); |
| 492 | } |
| 493 | |
| 494 | /* If a scaled font wants to unlock the font map while still being |
| 495 | * created (needed for user-fonts), we need to take extra care not |
| 496 | * ending up with multiple identical scaled fonts being created. |
| 497 | * |
| 498 | * What we do is, we create a fake identical scaled font, and mark |
| 499 | * it as placeholder, lock its mutex, and insert that in the fontmap |
| 500 | * hash table. This makes other code trying to create an identical |
| 501 | * scaled font to just wait and retry. |
| 502 | * |
| 503 | * The reason we have to create a fake scaled font instead of just using |
| 504 | * scaled_font is for lifecycle management: we need to (or rather, |
| 505 | * other code needs to) reference the scaled_font in the hash table. |
| 506 | * We can't do that on the input scaled_font as it may be freed by |
| 507 | * font backend upon error. |
| 508 | */ |
| 509 | |
| 510 | cairo_status_t |
| 511 | _cairo_scaled_font_register_placeholder_and_unlock_font_map (cairo_scaled_font_t *scaled_font) |
| 512 | { |
| 513 | cairo_status_t status; |
| 514 | cairo_scaled_font_t *placeholder_scaled_font; |
| 515 | |
| 516 | assert (CAIRO_MUTEX_IS_LOCKED (_cairo_scaled_font_map_mutex))((void) sizeof ((1) ? 1 : 0), __extension__ ({ if (1) ; else __assert_fail ("CAIRO_MUTEX_IS_LOCKED (_cairo_scaled_font_map_mutex)", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 516, __extension__ __PRETTY_FUNCTION__); })); |
| 517 | |
| 518 | status = scaled_font->status; |
| 519 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 520 | return status; |
| 521 | |
| 522 | placeholder_scaled_font = _cairo_malloc (sizeof (cairo_scaled_font_t))((sizeof (cairo_scaled_font_t)) != 0 ? malloc(sizeof (cairo_scaled_font_t )) : ((void*)0)); |
| 523 | if (unlikely (placeholder_scaled_font == NULL)(__builtin_expect (!!(placeholder_scaled_font == ((void*)0)), 0))) |
| 524 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 525 | |
| 526 | /* full initialization is wasteful, but who cares... */ |
| 527 | status = _cairo_scaled_font_init (placeholder_scaled_font, |
| 528 | scaled_font->font_face, |
| 529 | &scaled_font->font_matrix, |
| 530 | &scaled_font->ctm, |
| 531 | &scaled_font->options, |
| 532 | NULL((void*)0)); |
| 533 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 534 | goto FREE_PLACEHOLDER; |
| 535 | |
| 536 | placeholder_scaled_font->placeholder = TRUE1; |
| 537 | |
| 538 | placeholder_scaled_font->hash_entry.hash |
| 539 | = _cairo_scaled_font_compute_hash (placeholder_scaled_font); |
| 540 | status = _cairo_hash_table_insert (cairo_scaled_font_map->hash_table, |
| 541 | &placeholder_scaled_font->hash_entry); |
| 542 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 543 | goto FINI_PLACEHOLDER; |
| 544 | |
| 545 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex)pthread_mutex_unlock (&(_cairo_scaled_font_map_mutex)); |
| 546 | CAIRO_MUTEX_LOCK (placeholder_scaled_font->mutex)pthread_mutex_lock (&(placeholder_scaled_font->mutex)); |
| 547 | |
| 548 | return CAIRO_STATUS_SUCCESS; |
| 549 | |
| 550 | FINI_PLACEHOLDER: |
| 551 | _cairo_scaled_font_fini_internal (placeholder_scaled_font); |
| 552 | FREE_PLACEHOLDER: |
| 553 | free (placeholder_scaled_font); |
| 554 | |
| 555 | return _cairo_scaled_font_set_error (scaled_font, status); |
| 556 | } |
| 557 | |
| 558 | void |
| 559 | _cairo_scaled_font_unregister_placeholder_and_lock_font_map (cairo_scaled_font_t *scaled_font) |
| 560 | { |
| 561 | cairo_scaled_font_t *placeholder_scaled_font; |
| 562 | |
| 563 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex)pthread_mutex_lock (&(_cairo_scaled_font_map_mutex)); |
| 564 | |
| 565 | /* temporary hash value to match the placeholder */ |
| 566 | scaled_font->hash_entry.hash |
| 567 | = _cairo_scaled_font_compute_hash (scaled_font); |
| 568 | placeholder_scaled_font = |
| 569 | _cairo_hash_table_lookup (cairo_scaled_font_map->hash_table, |
| 570 | &scaled_font->hash_entry); |
| 571 | assert (placeholder_scaled_font != NULL)((void) sizeof ((placeholder_scaled_font != ((void*)0)) ? 1 : 0), __extension__ ({ if (placeholder_scaled_font != ((void*) 0)) ; else __assert_fail ("placeholder_scaled_font != NULL", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 571, __extension__ __PRETTY_FUNCTION__); })); |
| 572 | assert (placeholder_scaled_font->placeholder)((void) sizeof ((placeholder_scaled_font->placeholder) ? 1 : 0), __extension__ ({ if (placeholder_scaled_font->placeholder ) ; else __assert_fail ("placeholder_scaled_font->placeholder" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 572, __extension__ __PRETTY_FUNCTION__); })); |
| 573 | assert (CAIRO_MUTEX_IS_LOCKED (placeholder_scaled_font->mutex))((void) sizeof ((1) ? 1 : 0), __extension__ ({ if (1) ; else __assert_fail ("CAIRO_MUTEX_IS_LOCKED (placeholder_scaled_font->mutex)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 573, __extension__ __PRETTY_FUNCTION__); })); |
| 574 | |
| 575 | _cairo_hash_table_remove (cairo_scaled_font_map->hash_table, |
| 576 | &placeholder_scaled_font->hash_entry); |
| 577 | |
| 578 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex)pthread_mutex_unlock (&(_cairo_scaled_font_map_mutex)); |
| 579 | |
| 580 | CAIRO_MUTEX_UNLOCK (placeholder_scaled_font->mutex)pthread_mutex_unlock (&(placeholder_scaled_font->mutex )); |
| 581 | cairo_scaled_font_destroy_moz_cairo_scaled_font_destroy (placeholder_scaled_font); |
| 582 | |
| 583 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex)pthread_mutex_lock (&(_cairo_scaled_font_map_mutex)); |
| 584 | } |
| 585 | |
| 586 | static void |
| 587 | _cairo_scaled_font_placeholder_wait_for_creation_to_finish (cairo_scaled_font_t *placeholder_scaled_font) |
| 588 | { |
| 589 | /* reference the place holder so it doesn't go away */ |
| 590 | cairo_scaled_font_reference_moz_cairo_scaled_font_reference (placeholder_scaled_font); |
| 591 | |
| 592 | /* now unlock the fontmap mutex so creation has a chance to finish */ |
| 593 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex)pthread_mutex_unlock (&(_cairo_scaled_font_map_mutex)); |
| 594 | |
| 595 | /* wait on placeholder mutex until we are awaken */ |
| 596 | CAIRO_MUTEX_LOCK (placeholder_scaled_font->mutex)pthread_mutex_lock (&(placeholder_scaled_font->mutex)); |
| 597 | |
| 598 | /* ok, creation done. just clean up and back out */ |
| 599 | CAIRO_MUTEX_UNLOCK (placeholder_scaled_font->mutex)pthread_mutex_unlock (&(placeholder_scaled_font->mutex )); |
| 600 | cairo_scaled_font_destroy_moz_cairo_scaled_font_destroy (placeholder_scaled_font); |
| 601 | |
| 602 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex)pthread_mutex_lock (&(_cairo_scaled_font_map_mutex)); |
| 603 | } |
| 604 | |
| 605 | /* Fowler / Noll / Vo (FNV) Hash (http://www.isthe.com/chongo/tech/comp/fnv/) |
| 606 | * |
| 607 | * Not necessarily better than a lot of other hashes, but should be OK, and |
| 608 | * well tested with binary data. |
| 609 | */ |
| 610 | |
| 611 | #define FNV_64_PRIME((uint64_t)0x00000100000001B3) ((uint64_t)0x00000100000001B3) |
| 612 | #define FNV1_64_INIT((uint64_t)0xcbf29ce484222325) ((uint64_t)0xcbf29ce484222325) |
| 613 | |
| 614 | static uint64_t |
| 615 | _hash_matrix_fnv (const cairo_matrix_t *matrix, |
| 616 | uint64_t hval) |
| 617 | { |
| 618 | const uint8_t *buffer = (const uint8_t *) matrix; |
| 619 | int len = sizeof (cairo_matrix_t); |
| 620 | do { |
| 621 | hval *= FNV_64_PRIME((uint64_t)0x00000100000001B3); |
| 622 | hval ^= *buffer++; |
| 623 | } while (--len); |
| 624 | |
| 625 | return hval; |
| 626 | } |
| 627 | |
| 628 | static uint64_t |
| 629 | _hash_mix_bits (uint64_t hash) |
| 630 | { |
| 631 | hash += hash << 12; |
| 632 | hash ^= hash >> 7; |
| 633 | hash += hash << 3; |
| 634 | hash ^= hash >> 17; |
| 635 | hash += hash << 5; |
| 636 | return hash; |
| 637 | } |
| 638 | |
| 639 | static uintptr_t |
| 640 | _cairo_scaled_font_compute_hash (cairo_scaled_font_t *scaled_font) |
| 641 | { |
| 642 | uint64_t hash = FNV1_64_INIT((uint64_t)0xcbf29ce484222325); |
| 643 | |
| 644 | /* We do a bytewise hash on the font matrices */ |
| 645 | hash = _hash_matrix_fnv (&scaled_font->font_matrix, hash); |
| 646 | hash = _hash_matrix_fnv (&scaled_font->ctm, hash); |
| 647 | hash = _hash_mix_bits (hash); |
| 648 | |
| 649 | hash ^= (uintptr_t) scaled_font->original_font_face; |
| 650 | hash ^= cairo_font_options_hash_moz_cairo_font_options_hash (&scaled_font->options); |
| 651 | |
| 652 | /* final mixing of bits */ |
| 653 | hash = _hash_mix_bits (hash); |
| 654 | assert (hash != ZOMBIE)((void) sizeof ((hash != 0) ? 1 : 0), __extension__ ({ if (hash != 0) ; else __assert_fail ("hash != ZOMBIE", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 654, __extension__ __PRETTY_FUNCTION__); })); |
| 655 | |
| 656 | return hash; |
| 657 | } |
| 658 | |
| 659 | static void |
| 660 | _cairo_scaled_font_init_key (cairo_scaled_font_t *scaled_font, |
| 661 | cairo_font_face_t *font_face, |
| 662 | const cairo_matrix_t *font_matrix, |
| 663 | const cairo_matrix_t *ctm, |
| 664 | const cairo_font_options_t *options) |
| 665 | { |
| 666 | scaled_font->status = CAIRO_STATUS_SUCCESS; |
| 667 | scaled_font->placeholder = FALSE0; |
| 668 | scaled_font->font_face = font_face; |
| 669 | scaled_font->original_font_face = font_face; |
| 670 | scaled_font->font_matrix = *font_matrix; |
| 671 | scaled_font->ctm = *ctm; |
| 672 | /* ignore translation values in the ctm */ |
| 673 | scaled_font->ctm.x0 = 0.; |
| 674 | scaled_font->ctm.y0 = 0.; |
| 675 | _cairo_font_options_init_copy (&scaled_font->options, options); |
| 676 | |
| 677 | scaled_font->hash_entry.hash = |
| 678 | _cairo_scaled_font_compute_hash (scaled_font); |
| 679 | } |
| 680 | |
| 681 | static void |
| 682 | _cairo_scaled_font_fini_key (cairo_scaled_font_t *scaled_font) |
| 683 | { |
| 684 | _cairo_font_options_fini (&scaled_font->options); |
| 685 | } |
| 686 | |
| 687 | static cairo_bool_t |
| 688 | _cairo_scaled_font_keys_equal (const void *abstract_key_a, |
| 689 | const void *abstract_key_b) |
| 690 | { |
| 691 | const cairo_scaled_font_t *key_a = abstract_key_a; |
| 692 | const cairo_scaled_font_t *key_b = abstract_key_b; |
| 693 | |
| 694 | return key_a->original_font_face == key_b->original_font_face && |
| 695 | memcmp ((unsigned char *)(&key_a->font_matrix.xx), |
| 696 | (unsigned char *)(&key_b->font_matrix.xx), |
| 697 | sizeof(cairo_matrix_t)) == 0 && |
| 698 | memcmp ((unsigned char *)(&key_a->ctm.xx), |
| 699 | (unsigned char *)(&key_b->ctm.xx), |
| 700 | sizeof(cairo_matrix_t)) == 0 && |
| 701 | cairo_font_options_equal_moz_cairo_font_options_equal (&key_a->options, &key_b->options); |
| 702 | } |
| 703 | |
| 704 | static cairo_bool_t |
| 705 | _cairo_scaled_font_matches (const cairo_scaled_font_t *scaled_font, |
| 706 | const cairo_font_face_t *font_face, |
| 707 | const cairo_matrix_t *font_matrix, |
| 708 | const cairo_matrix_t *ctm, |
| 709 | const cairo_font_options_t *options) |
| 710 | { |
| 711 | return scaled_font->original_font_face == font_face && |
| 712 | memcmp ((unsigned char *)(&scaled_font->font_matrix.xx), |
| 713 | (unsigned char *)(&font_matrix->xx), |
| 714 | sizeof(cairo_matrix_t)) == 0 && |
| 715 | memcmp ((unsigned char *)(&scaled_font->ctm.xx), |
| 716 | (unsigned char *)(&ctm->xx), |
| 717 | sizeof(cairo_matrix_t)) == 0 && |
| 718 | cairo_font_options_equal_moz_cairo_font_options_equal (&scaled_font->options, options); |
| 719 | } |
| 720 | |
| 721 | /* |
| 722 | * Basic #cairo_scaled_font_t object management |
| 723 | */ |
| 724 | |
| 725 | cairo_status_t |
| 726 | _cairo_scaled_font_init (cairo_scaled_font_t *scaled_font, |
| 727 | cairo_font_face_t *font_face, |
| 728 | const cairo_matrix_t *font_matrix, |
| 729 | const cairo_matrix_t *ctm, |
| 730 | const cairo_font_options_t *options, |
| 731 | const cairo_scaled_font_backend_t *backend) |
| 732 | { |
| 733 | cairo_status_t status; |
| 734 | |
| 735 | status = cairo_font_options_status_moz_cairo_font_options_status ((cairo_font_options_t *) options); |
| 736 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 737 | return status; |
| 738 | |
| 739 | scaled_font->status = CAIRO_STATUS_SUCCESS; |
| 740 | scaled_font->placeholder = FALSE0; |
| 741 | scaled_font->font_face = font_face; |
| 742 | scaled_font->original_font_face = font_face; |
| 743 | scaled_font->font_matrix = *font_matrix; |
| 744 | scaled_font->ctm = *ctm; |
| 745 | /* ignore translation values in the ctm */ |
| 746 | scaled_font->ctm.x0 = 0.; |
| 747 | scaled_font->ctm.y0 = 0.; |
| 748 | _cairo_font_options_init_copy (&scaled_font->options, options); |
| 749 | |
| 750 | cairo_matrix_multiply_moz_cairo_matrix_multiply (&scaled_font->scale, |
| 751 | &scaled_font->font_matrix, |
| 752 | &scaled_font->ctm); |
| 753 | |
| 754 | scaled_font->max_scale = MAX (fabs (scaled_font->scale.xx) + fabs (scaled_font->scale.xy),((fabs (scaled_font->scale.xx) + fabs (scaled_font->scale .xy)) > (fabs (scaled_font->scale.yx) + fabs (scaled_font ->scale.yy)) ? (fabs (scaled_font->scale.xx) + fabs (scaled_font ->scale.xy)) : (fabs (scaled_font->scale.yx) + fabs (scaled_font ->scale.yy))) |
| 755 | fabs (scaled_font->scale.yx) + fabs (scaled_font->scale.yy))((fabs (scaled_font->scale.xx) + fabs (scaled_font->scale .xy)) > (fabs (scaled_font->scale.yx) + fabs (scaled_font ->scale.yy)) ? (fabs (scaled_font->scale.xx) + fabs (scaled_font ->scale.xy)) : (fabs (scaled_font->scale.yx) + fabs (scaled_font ->scale.yy))); |
| 756 | scaled_font->scale_inverse = scaled_font->scale; |
| 757 | status = cairo_matrix_invert_moz_cairo_matrix_invert (&scaled_font->scale_inverse); |
| 758 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 759 | /* If the font scale matrix is rank 0, just using an all-zero inverse matrix |
| 760 | * makes everything work correctly. This make font size 0 work without |
| 761 | * producing an error. |
| 762 | * |
| 763 | * FIXME: If the scale is rank 1, we still go into error mode. But then |
| 764 | * again, that's what we do everywhere in cairo. |
| 765 | * |
| 766 | * Also, the check for == 0. below may be too harsh... |
| 767 | */ |
| 768 | if (_cairo_matrix_is_scale_0 (&scaled_font->scale)) { |
| 769 | cairo_matrix_init_moz_cairo_matrix_init (&scaled_font->scale_inverse, |
| 770 | 0, 0, 0, 0, |
| 771 | -scaled_font->scale.x0, |
| 772 | -scaled_font->scale.y0); |
| 773 | } else |
| 774 | return status; |
| 775 | } |
| 776 | |
| 777 | scaled_font->glyphs = _cairo_hash_table_create (NULL((void*)0)); |
| 778 | if (unlikely (scaled_font->glyphs == NULL)(__builtin_expect (!!(scaled_font->glyphs == ((void*)0)), 0 ))) |
| 779 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 780 | |
| 781 | cairo_list_init (&scaled_font->glyph_pages); |
| 782 | scaled_font->cache_frozen = FALSE0; |
| 783 | scaled_font->global_cache_frozen = FALSE0; |
| 784 | _cairo_array_init (&scaled_font->recording_surfaces_to_free, sizeof (cairo_surface_t *)); |
| 785 | |
| 786 | scaled_font->holdover = FALSE0; |
| 787 | scaled_font->finished = FALSE0; |
| 788 | |
| 789 | CAIRO_REFERENCE_COUNT_INIT (&scaled_font->ref_count, 1)((&scaled_font->ref_count)->ref_count = (1)); |
| 790 | |
| 791 | _cairo_user_data_array_init (&scaled_font->user_data); |
| 792 | |
| 793 | cairo_font_face_reference_moz_cairo_font_face_reference (font_face); |
| 794 | scaled_font->original_font_face = NULL((void*)0); |
| 795 | |
| 796 | CAIRO_RECURSIVE_MUTEX_INIT (scaled_font->mutex)do { pthread_mutexattr_t attr; pthread_mutexattr_init (&attr ); pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE ); pthread_mutex_init (&(scaled_font->mutex), &attr ); pthread_mutexattr_destroy (&attr); } while (0); |
| 797 | |
| 798 | cairo_list_init (&scaled_font->dev_privates); |
| 799 | |
| 800 | scaled_font->backend = backend; |
| 801 | cairo_list_init (&scaled_font->link); |
| 802 | |
| 803 | return CAIRO_STATUS_SUCCESS; |
| 804 | } |
| 805 | |
| 806 | static void _cairo_scaled_font_free_recording_surfaces (cairo_scaled_font_t *scaled_font) |
| 807 | { |
| 808 | int num_recording_surfaces; |
| 809 | cairo_surface_t *surface; |
| 810 | |
| 811 | num_recording_surfaces = _cairo_array_num_elements (&scaled_font->recording_surfaces_to_free); |
| 812 | if (num_recording_surfaces > 0) { |
| 813 | for (int i = 0; i < num_recording_surfaces; i++) { |
| 814 | _cairo_array_copy_element (&scaled_font->recording_surfaces_to_free, i, &surface); |
| 815 | cairo_surface_finish_moz_cairo_surface_finish (surface); |
| 816 | cairo_surface_destroy_moz_cairo_surface_destroy (surface); |
| 817 | } |
| 818 | _cairo_array_truncate (&scaled_font->recording_surfaces_to_free, 0); |
| 819 | } |
| 820 | } |
| 821 | |
| 822 | void |
| 823 | _cairo_scaled_font_freeze_cache (cairo_scaled_font_t *scaled_font) |
| 824 | { |
| 825 | /* ensure we do not modify an error object */ |
| 826 | assert (scaled_font->status == CAIRO_STATUS_SUCCESS)((void) sizeof ((scaled_font->status == CAIRO_STATUS_SUCCESS ) ? 1 : 0), __extension__ ({ if (scaled_font->status == CAIRO_STATUS_SUCCESS ) ; else __assert_fail ("scaled_font->status == CAIRO_STATUS_SUCCESS" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 826, __extension__ __PRETTY_FUNCTION__); })); |
| 827 | |
| 828 | CAIRO_MUTEX_LOCK (scaled_font->mutex)pthread_mutex_lock (&(scaled_font->mutex)); |
| 829 | scaled_font->cache_frozen = TRUE1; |
| 830 | } |
| 831 | |
| 832 | void |
| 833 | _cairo_scaled_font_thaw_cache (cairo_scaled_font_t *scaled_font) |
| 834 | { |
| 835 | assert (scaled_font->cache_frozen)((void) sizeof ((scaled_font->cache_frozen) ? 1 : 0), __extension__ ({ if (scaled_font->cache_frozen) ; else __assert_fail ("scaled_font->cache_frozen" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 835, __extension__ __PRETTY_FUNCTION__); })); |
| 836 | |
| 837 | if (scaled_font->global_cache_frozen) { |
| 838 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex)pthread_mutex_lock (&(_cairo_scaled_glyph_page_cache_mutex )); |
| 839 | _cairo_cache_thaw (&cairo_scaled_glyph_page_cache); |
| 840 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex)pthread_mutex_unlock (&(_cairo_scaled_glyph_page_cache_mutex )); |
| 841 | scaled_font->global_cache_frozen = FALSE0; |
| 842 | } |
| 843 | |
| 844 | _cairo_scaled_font_free_recording_surfaces (scaled_font); |
| 845 | |
| 846 | scaled_font->cache_frozen = FALSE0; |
| 847 | CAIRO_MUTEX_UNLOCK (scaled_font->mutex)pthread_mutex_unlock (&(scaled_font->mutex)); |
| 848 | } |
| 849 | |
| 850 | void |
| 851 | _cairo_scaled_font_reset_cache (cairo_scaled_font_t *scaled_font) |
| 852 | { |
| 853 | cairo_scaled_glyph_page_t *page; |
| 854 | |
| 855 | CAIRO_MUTEX_LOCK (scaled_font->mutex)pthread_mutex_lock (&(scaled_font->mutex)); |
| 856 | assert (! scaled_font->cache_frozen)((void) sizeof ((! scaled_font->cache_frozen) ? 1 : 0), __extension__ ({ if (! scaled_font->cache_frozen) ; else __assert_fail ( "! scaled_font->cache_frozen", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 856, __extension__ __PRETTY_FUNCTION__); })); |
| 857 | assert (! scaled_font->global_cache_frozen)((void) sizeof ((! scaled_font->global_cache_frozen) ? 1 : 0), __extension__ ({ if (! scaled_font->global_cache_frozen ) ; else __assert_fail ("! scaled_font->global_cache_frozen" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 857, __extension__ __PRETTY_FUNCTION__); })); |
| 858 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex)pthread_mutex_lock (&(_cairo_scaled_glyph_page_cache_mutex )); |
| 859 | |
| 860 | cairo_list_foreach_entry (page,for (page = ({ const __typeof__ (((cairo_scaled_glyph_page_t * ) 0)->link) *mptr__ = ((&scaled_font->glyph_pages)-> next); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof (cairo_scaled_glyph_page_t, link)); }); &page->link != (&scaled_font->glyph_pages); page = ({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link) *mptr__ = (page ->link.next); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t, link)); })) |
| 861 | cairo_scaled_glyph_page_t,for (page = ({ const __typeof__ (((cairo_scaled_glyph_page_t * ) 0)->link) *mptr__ = ((&scaled_font->glyph_pages)-> next); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof (cairo_scaled_glyph_page_t, link)); }); &page->link != (&scaled_font->glyph_pages); page = ({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link) *mptr__ = (page ->link.next); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t, link)); })) |
| 862 | &scaled_font->glyph_pages,for (page = ({ const __typeof__ (((cairo_scaled_glyph_page_t * ) 0)->link) *mptr__ = ((&scaled_font->glyph_pages)-> next); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof (cairo_scaled_glyph_page_t, link)); }); &page->link != (&scaled_font->glyph_pages); page = ({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link) *mptr__ = (page ->link.next); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t, link)); })) |
| 863 | link)for (page = ({ const __typeof__ (((cairo_scaled_glyph_page_t * ) 0)->link) *mptr__ = ((&scaled_font->glyph_pages)-> next); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof (cairo_scaled_glyph_page_t, link)); }); &page->link != (&scaled_font->glyph_pages); page = ({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link) *mptr__ = (page ->link.next); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t, link)); })) { |
| 864 | cairo_scaled_glyph_page_cache.size -= page->cache_entry.size; |
| 865 | _cairo_hash_table_remove (cairo_scaled_glyph_page_cache.hash_table, |
| 866 | (cairo_hash_entry_t *) &page->cache_entry); |
| 867 | } |
| 868 | |
| 869 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex)pthread_mutex_unlock (&(_cairo_scaled_glyph_page_cache_mutex )); |
| 870 | |
| 871 | /* Destroy scaled_font's pages while holding its lock only, and not the |
| 872 | * global page cache lock. The destructor can cause us to recurse and |
| 873 | * end up back here for a different scaled_font. */ |
| 874 | |
| 875 | while (! cairo_list_is_empty (&scaled_font->glyph_pages)) { |
| 876 | page = cairo_list_first_entry (&scaled_font->glyph_pages,({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link ) *mptr__ = ((&scaled_font->glyph_pages)->next); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t , link)); }) |
| 877 | cairo_scaled_glyph_page_t,({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link ) *mptr__ = ((&scaled_font->glyph_pages)->next); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t , link)); }) |
| 878 | link)({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link ) *mptr__ = ((&scaled_font->glyph_pages)->next); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t , link)); }); |
| 879 | _cairo_scaled_glyph_page_destroy (scaled_font, page); |
| 880 | } |
| 881 | |
| 882 | CAIRO_MUTEX_UNLOCK (scaled_font->mutex)pthread_mutex_unlock (&(scaled_font->mutex)); |
| 883 | } |
| 884 | |
| 885 | cairo_status_t |
| 886 | _cairo_scaled_font_set_metrics (cairo_scaled_font_t *scaled_font, |
| 887 | cairo_font_extents_t *fs_metrics) |
| 888 | { |
| 889 | cairo_status_t status; |
| 890 | double font_scale_x, font_scale_y; |
| 891 | |
| 892 | scaled_font->fs_extents = *fs_metrics; |
| 893 | |
| 894 | status = _cairo_matrix_compute_basis_scale_factors (&scaled_font->font_matrix, |
| 895 | &font_scale_x, &font_scale_y, |
| 896 | 1); |
| 897 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 898 | return status; |
| 899 | |
| 900 | /* |
| 901 | * The font responded in unscaled units, scale by the font |
| 902 | * matrix scale factors to get to user space |
| 903 | */ |
| 904 | |
| 905 | scaled_font->extents.ascent = fs_metrics->ascent * font_scale_y; |
| 906 | scaled_font->extents.descent = fs_metrics->descent * font_scale_y; |
| 907 | scaled_font->extents.height = fs_metrics->height * font_scale_y; |
| 908 | scaled_font->extents.max_x_advance = fs_metrics->max_x_advance * font_scale_x; |
| 909 | scaled_font->extents.max_y_advance = fs_metrics->max_y_advance * font_scale_y; |
| 910 | |
| 911 | return CAIRO_STATUS_SUCCESS; |
| 912 | } |
| 913 | |
| 914 | static void |
| 915 | _cairo_scaled_font_fini_internal (cairo_scaled_font_t *scaled_font) |
| 916 | { |
| 917 | assert (! scaled_font->cache_frozen)((void) sizeof ((! scaled_font->cache_frozen) ? 1 : 0), __extension__ ({ if (! scaled_font->cache_frozen) ; else __assert_fail ( "! scaled_font->cache_frozen", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 917, __extension__ __PRETTY_FUNCTION__); })); |
| 918 | assert (! scaled_font->global_cache_frozen)((void) sizeof ((! scaled_font->global_cache_frozen) ? 1 : 0), __extension__ ({ if (! scaled_font->global_cache_frozen ) ; else __assert_fail ("! scaled_font->global_cache_frozen" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 918, __extension__ __PRETTY_FUNCTION__); })); |
| 919 | scaled_font->finished = TRUE1; |
| 920 | |
| 921 | _cairo_scaled_font_reset_cache (scaled_font); |
| 922 | _cairo_hash_table_destroy (scaled_font->glyphs); |
| 923 | _cairo_font_options_fini (&scaled_font->options); |
| 924 | |
| 925 | cairo_font_face_destroy_moz_cairo_font_face_destroy (scaled_font->font_face); |
| 926 | cairo_font_face_destroy_moz_cairo_font_face_destroy (scaled_font->original_font_face); |
| 927 | |
| 928 | _cairo_scaled_font_free_recording_surfaces (scaled_font); |
| 929 | _cairo_array_fini (&scaled_font->recording_surfaces_to_free); |
| 930 | |
| 931 | CAIRO_MUTEX_FINI (scaled_font->mutex)pthread_mutex_destroy (&(scaled_font->mutex)); |
| 932 | |
| 933 | while (! cairo_list_is_empty (&scaled_font->dev_privates)) { |
| 934 | cairo_scaled_font_private_t *private = |
| 935 | cairo_list_first_entry (&scaled_font->dev_privates,({ const __typeof__ (((cairo_scaled_font_private_t *) 0)-> link) *mptr__ = ((&scaled_font->dev_privates)->next ); (cairo_scaled_font_private_t *) ((char *) mptr__ - __builtin_offsetof (cairo_scaled_font_private_t, link)); }) |
| 936 | cairo_scaled_font_private_t,({ const __typeof__ (((cairo_scaled_font_private_t *) 0)-> link) *mptr__ = ((&scaled_font->dev_privates)->next ); (cairo_scaled_font_private_t *) ((char *) mptr__ - __builtin_offsetof (cairo_scaled_font_private_t, link)); }) |
| 937 | link)({ const __typeof__ (((cairo_scaled_font_private_t *) 0)-> link) *mptr__ = ((&scaled_font->dev_privates)->next ); (cairo_scaled_font_private_t *) ((char *) mptr__ - __builtin_offsetof (cairo_scaled_font_private_t, link)); }); |
| 938 | private->destroy (private, scaled_font); |
| 939 | } |
| 940 | |
| 941 | if (scaled_font->backend != NULL((void*)0) && scaled_font->backend->fini != NULL((void*)0)) |
| 942 | scaled_font->backend->fini (scaled_font); |
| 943 | |
| 944 | _cairo_user_data_array_fini (&scaled_font->user_data); |
| 945 | } |
| 946 | |
| 947 | void |
| 948 | _cairo_scaled_font_fini (cairo_scaled_font_t *scaled_font) |
| 949 | { |
| 950 | /* Release the lock to avoid the possibility of a recursive |
| 951 | * deadlock when the scaled font destroy closure gets called. */ |
| 952 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_map_mutex)pthread_mutex_unlock (&(_cairo_scaled_font_map_mutex)); |
| 953 | _cairo_scaled_font_fini_internal (scaled_font); |
| 954 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_map_mutex)pthread_mutex_lock (&(_cairo_scaled_font_map_mutex)); |
| 955 | } |
| 956 | |
| 957 | void |
| 958 | _cairo_scaled_font_attach_private (cairo_scaled_font_t *scaled_font, |
| 959 | cairo_scaled_font_private_t *private, |
| 960 | const void *key, |
| 961 | void (*destroy) (cairo_scaled_font_private_t *, |
| 962 | cairo_scaled_font_t *)) |
| 963 | { |
| 964 | private->key = key; |
| 965 | private->destroy = destroy; |
| 966 | cairo_list_add (&private->link, &scaled_font->dev_privates); |
| 967 | } |
| 968 | |
| 969 | cairo_scaled_font_private_t * |
| 970 | _cairo_scaled_font_find_private (cairo_scaled_font_t *scaled_font, |
| 971 | const void *key) |
| 972 | { |
| 973 | cairo_scaled_font_private_t *priv; |
| 974 | |
| 975 | cairo_list_foreach_entry (priv, cairo_scaled_font_private_t,for (priv = ({ const __typeof__ (((cairo_scaled_font_private_t *) 0)->link) *mptr__ = ((&scaled_font->dev_privates )->next); (cairo_scaled_font_private_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_font_private_t, link)); }) ; &priv->link != (&scaled_font->dev_privates); priv = ({ const __typeof__ (((cairo_scaled_font_private_t *) 0)-> link) *mptr__ = (priv->link.next); (cairo_scaled_font_private_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_font_private_t , link)); })) |
| 976 | &scaled_font->dev_privates, link)for (priv = ({ const __typeof__ (((cairo_scaled_font_private_t *) 0)->link) *mptr__ = ((&scaled_font->dev_privates )->next); (cairo_scaled_font_private_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_font_private_t, link)); }) ; &priv->link != (&scaled_font->dev_privates); priv = ({ const __typeof__ (((cairo_scaled_font_private_t *) 0)-> link) *mptr__ = (priv->link.next); (cairo_scaled_font_private_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_font_private_t , link)); })) |
| 977 | { |
| 978 | if (priv->key == key) { |
| 979 | if (priv->link.prev != &scaled_font->dev_privates) |
| 980 | cairo_list_move (&priv->link, &scaled_font->dev_privates); |
| 981 | return priv; |
| 982 | } |
| 983 | } |
| 984 | |
| 985 | return NULL((void*)0); |
| 986 | } |
| 987 | |
| 988 | void |
| 989 | _cairo_scaled_glyph_attach_private (cairo_scaled_glyph_t *scaled_glyph, |
| 990 | cairo_scaled_glyph_private_t *private, |
| 991 | const void *key, |
| 992 | void (*destroy) (cairo_scaled_glyph_private_t *, |
| 993 | cairo_scaled_glyph_t *, |
| 994 | cairo_scaled_font_t *)) |
| 995 | { |
| 996 | private->key = key; |
| 997 | private->destroy = destroy; |
| 998 | cairo_list_add (&private->link, &scaled_glyph->dev_privates); |
| 999 | } |
| 1000 | |
| 1001 | cairo_scaled_glyph_private_t * |
| 1002 | _cairo_scaled_glyph_find_private (cairo_scaled_glyph_t *scaled_glyph, |
| 1003 | const void *key) |
| 1004 | { |
| 1005 | cairo_scaled_glyph_private_t *priv; |
| 1006 | |
| 1007 | cairo_list_foreach_entry (priv, cairo_scaled_glyph_private_t,for (priv = ({ const __typeof__ (((cairo_scaled_glyph_private_t *) 0)->link) *mptr__ = ((&scaled_glyph->dev_privates )->next); (cairo_scaled_glyph_private_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_private_t, link)); } ); &priv->link != (&scaled_glyph->dev_privates) ; priv = ({ const __typeof__ (((cairo_scaled_glyph_private_t * ) 0)->link) *mptr__ = (priv->link.next); (cairo_scaled_glyph_private_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_private_t , link)); })) |
| 1008 | &scaled_glyph->dev_privates, link)for (priv = ({ const __typeof__ (((cairo_scaled_glyph_private_t *) 0)->link) *mptr__ = ((&scaled_glyph->dev_privates )->next); (cairo_scaled_glyph_private_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_private_t, link)); } ); &priv->link != (&scaled_glyph->dev_privates) ; priv = ({ const __typeof__ (((cairo_scaled_glyph_private_t * ) 0)->link) *mptr__ = (priv->link.next); (cairo_scaled_glyph_private_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_private_t , link)); })) |
| 1009 | { |
| 1010 | if (priv->key == key) { |
| 1011 | if (priv->link.prev != &scaled_glyph->dev_privates) |
| 1012 | cairo_list_move (&priv->link, &scaled_glyph->dev_privates); |
| 1013 | return priv; |
| 1014 | } |
| 1015 | } |
| 1016 | |
| 1017 | return NULL((void*)0); |
| 1018 | } |
| 1019 | |
| 1020 | /** |
| 1021 | * cairo_scaled_font_create: |
| 1022 | * @font_face: a #cairo_font_face_t |
| 1023 | * @font_matrix: font space to user space transformation matrix for the |
| 1024 | * font. In the simplest case of a N point font, this matrix is |
| 1025 | * just a scale by N, but it can also be used to shear the font |
| 1026 | * or stretch it unequally along the two axes. See |
| 1027 | * cairo_set_font_matrix(). |
| 1028 | * @ctm: user to device transformation matrix with which the font will |
| 1029 | * be used. |
| 1030 | * @options: options to use when getting metrics for the font and |
| 1031 | * rendering with it. |
| 1032 | * |
| 1033 | * Creates a #cairo_scaled_font_t object from a font face and matrices that |
| 1034 | * describe the size of the font and the environment in which it will |
| 1035 | * be used. |
| 1036 | * |
| 1037 | * Return value: a newly created #cairo_scaled_font_t. Destroy with |
| 1038 | * cairo_scaled_font_destroy() |
| 1039 | * |
| 1040 | * Since: 1.0 |
| 1041 | **/ |
| 1042 | cairo_scaled_font_t * |
| 1043 | cairo_scaled_font_create_moz_cairo_scaled_font_create (cairo_font_face_t *font_face, |
| 1044 | const cairo_matrix_t *font_matrix, |
| 1045 | const cairo_matrix_t *ctm, |
| 1046 | const cairo_font_options_t *options) |
| 1047 | { |
| 1048 | cairo_status_t status; |
| 1049 | cairo_scaled_font_map_t *font_map; |
| 1050 | cairo_font_face_t *original_font_face = font_face; |
| 1051 | cairo_scaled_font_t key, *old = NULL((void*)0), *scaled_font = NULL((void*)0), *dead = NULL((void*)0); |
| 1052 | double det; |
| 1053 | |
| 1054 | status = font_face->status; |
| 1055 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1056 | return _cairo_scaled_font_create_in_error (status); |
| 1057 | |
| 1058 | det = _cairo_matrix_compute_determinant (font_matrix); |
| 1059 | if (! ISFINITE (det)__builtin_isfinite (det)) |
| 1060 | return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_MATRIX)); |
| 1061 | |
| 1062 | det = _cairo_matrix_compute_determinant (ctm); |
| 1063 | if (! ISFINITE (det)__builtin_isfinite (det)) |
| 1064 | return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_MATRIX)); |
| 1065 | |
| 1066 | status = cairo_font_options_status_moz_cairo_font_options_status ((cairo_font_options_t *) options); |
| 1067 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1068 | return _cairo_scaled_font_create_in_error (status); |
| 1069 | |
| 1070 | /* Note that degenerate ctm or font_matrix *are* allowed. |
| 1071 | * We want to support a font size of 0. */ |
| 1072 | |
| 1073 | font_map = _cairo_scaled_font_map_lock (); |
| 1074 | if (unlikely (font_map == NULL)(__builtin_expect (!!(font_map == ((void*)0)), 0))) |
| 1075 | return _cairo_scaled_font_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY)); |
| 1076 | |
| 1077 | scaled_font = font_map->mru_scaled_font; |
| 1078 | if (scaled_font != NULL((void*)0) && |
| 1079 | _cairo_scaled_font_matches (scaled_font, |
| 1080 | font_face, font_matrix, ctm, options)) |
| 1081 | { |
| 1082 | assert (scaled_font->hash_entry.hash != ZOMBIE)((void) sizeof ((scaled_font->hash_entry.hash != 0) ? 1 : 0 ), __extension__ ({ if (scaled_font->hash_entry.hash != 0) ; else __assert_fail ("scaled_font->hash_entry.hash != ZOMBIE" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1082, __extension__ __PRETTY_FUNCTION__); })); |
| 1083 | assert (! scaled_font->placeholder)((void) sizeof ((! scaled_font->placeholder) ? 1 : 0), __extension__ ({ if (! scaled_font->placeholder) ; else __assert_fail ( "! scaled_font->placeholder", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1083, __extension__ __PRETTY_FUNCTION__); })); |
| 1084 | |
| 1085 | if (likely (scaled_font->status == CAIRO_STATUS_SUCCESS)(__builtin_expect (!!(scaled_font->status == CAIRO_STATUS_SUCCESS ), 1))) { |
| 1086 | /* We increment the reference count manually here, (rather |
| 1087 | * than calling into cairo_scaled_font_reference), since we |
| 1088 | * must modify the reference count while our lock is still |
| 1089 | * held. */ |
| 1090 | _cairo_reference_count_inc (&scaled_font->ref_count)((void) __atomic_fetch_add(&(&scaled_font->ref_count )->ref_count, 1, 5)); |
| 1091 | _cairo_scaled_font_map_unlock (); |
| 1092 | return scaled_font; |
| 1093 | } |
| 1094 | |
| 1095 | /* the font has been put into an error status - abandon the cache */ |
| 1096 | _cairo_hash_table_remove (font_map->hash_table, |
| 1097 | &scaled_font->hash_entry); |
| 1098 | scaled_font->hash_entry.hash = ZOMBIE0; |
| 1099 | dead = scaled_font; |
| 1100 | font_map->mru_scaled_font = NULL((void*)0); |
| 1101 | } |
| 1102 | |
| 1103 | _cairo_scaled_font_init_key (&key, font_face, font_matrix, ctm, options); |
| 1104 | |
| 1105 | while ((scaled_font = _cairo_hash_table_lookup (font_map->hash_table, |
| 1106 | &key.hash_entry))) |
| 1107 | { |
| 1108 | if (! scaled_font->placeholder) |
| 1109 | break; |
| 1110 | |
| 1111 | /* If the scaled font is being created (happens for user-font), |
| 1112 | * just wait until it's done, then retry */ |
| 1113 | _cairo_scaled_font_placeholder_wait_for_creation_to_finish (scaled_font); |
| 1114 | } |
| 1115 | _cairo_scaled_font_fini_key (&key); |
| 1116 | |
| 1117 | if (scaled_font != NULL((void*)0)) { |
| 1118 | /* If the original reference count is 0, then this font must have |
| 1119 | * been found in font_map->holdovers, (which means this caching is |
| 1120 | * actually working). So now we remove it from the holdovers |
| 1121 | * array, unless we caught the font in the middle of destruction. |
| 1122 | */ |
| 1123 | if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)(_cairo_atomic_int_get (&(&scaled_font->ref_count) ->ref_count) > 0)) { |
| 1124 | if (scaled_font->holdover) { |
| 1125 | int i; |
| 1126 | |
| 1127 | for (i = 0; i < font_map->num_holdovers; i++) { |
| 1128 | if (font_map->holdovers[i] == scaled_font) { |
| 1129 | font_map->num_holdovers--; |
| 1130 | memmove (&font_map->holdovers[i], |
| 1131 | &font_map->holdovers[i+1], |
| 1132 | (font_map->num_holdovers - i) * sizeof (cairo_scaled_font_t*)); |
| 1133 | break; |
| 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | scaled_font->holdover = FALSE0; |
| 1138 | } |
| 1139 | |
| 1140 | /* reset any error status */ |
| 1141 | scaled_font->status = CAIRO_STATUS_SUCCESS; |
| 1142 | } |
| 1143 | |
| 1144 | if (likely (scaled_font->status == CAIRO_STATUS_SUCCESS)(__builtin_expect (!!(scaled_font->status == CAIRO_STATUS_SUCCESS ), 1))) { |
| 1145 | /* We increment the reference count manually here, (rather |
| 1146 | * than calling into cairo_scaled_font_reference), since we |
| 1147 | * must modify the reference count while our lock is still |
| 1148 | * held. */ |
| 1149 | |
| 1150 | old = font_map->mru_scaled_font; |
| 1151 | font_map->mru_scaled_font = scaled_font; |
| 1152 | /* increment reference count for the mru cache */ |
| 1153 | _cairo_reference_count_inc (&scaled_font->ref_count)((void) __atomic_fetch_add(&(&scaled_font->ref_count )->ref_count, 1, 5)); |
| 1154 | /* and increment for the returned reference */ |
| 1155 | _cairo_reference_count_inc (&scaled_font->ref_count)((void) __atomic_fetch_add(&(&scaled_font->ref_count )->ref_count, 1, 5)); |
| 1156 | _cairo_scaled_font_map_unlock (); |
| 1157 | |
| 1158 | cairo_scaled_font_destroy_moz_cairo_scaled_font_destroy (old); |
| 1159 | if (font_face != original_font_face) |
| 1160 | cairo_font_face_destroy_moz_cairo_font_face_destroy (font_face); |
| 1161 | |
| 1162 | return scaled_font; |
| 1163 | } |
| 1164 | |
| 1165 | /* the font has been put into an error status - abandon the cache */ |
| 1166 | _cairo_hash_table_remove (font_map->hash_table, |
| 1167 | &scaled_font->hash_entry); |
| 1168 | scaled_font->hash_entry.hash = ZOMBIE0; |
| 1169 | } |
| 1170 | |
| 1171 | |
| 1172 | /* Otherwise create it and insert it into the hash table. */ |
| 1173 | if (font_face->backend->get_implementation != NULL((void*)0)) { |
| 1174 | font_face = font_face->backend->get_implementation (font_face, |
| 1175 | font_matrix, |
| 1176 | ctm, |
| 1177 | options); |
| 1178 | if (unlikely (font_face->status)(__builtin_expect (!!(font_face->status), 0))) { |
| 1179 | _cairo_scaled_font_map_unlock (); |
| 1180 | return _cairo_scaled_font_create_in_error (font_face->status); |
| 1181 | } |
| 1182 | } |
| 1183 | |
| 1184 | status = font_face->backend->scaled_font_create (font_face, font_matrix, |
| 1185 | ctm, options, &scaled_font); |
| 1186 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 1187 | _cairo_scaled_font_map_unlock (); |
| 1188 | if (font_face != original_font_face) |
| 1189 | cairo_font_face_destroy_moz_cairo_font_face_destroy (font_face); |
| 1190 | |
| 1191 | if (dead != NULL((void*)0)) |
| 1192 | cairo_scaled_font_destroy_moz_cairo_scaled_font_destroy (dead); |
| 1193 | |
| 1194 | return _cairo_scaled_font_create_in_error (status); |
| 1195 | } |
| 1196 | /* Or did we encounter an error whilst constructing the scaled font? */ |
| 1197 | if (unlikely (scaled_font->status)(__builtin_expect (!!(scaled_font->status), 0))) { |
| 1198 | _cairo_scaled_font_map_unlock (); |
| 1199 | if (font_face != original_font_face) |
| 1200 | cairo_font_face_destroy_moz_cairo_font_face_destroy (font_face); |
| 1201 | |
| 1202 | if (dead != NULL((void*)0)) |
| 1203 | cairo_scaled_font_destroy_moz_cairo_scaled_font_destroy (dead); |
| 1204 | |
| 1205 | return scaled_font; |
| 1206 | } |
| 1207 | |
| 1208 | /* Our caching above is defeated if the backend switches fonts on us - |
| 1209 | * e.g. old incarnations of toy-font-face and lazily resolved |
| 1210 | * ft-font-faces |
| 1211 | */ |
| 1212 | assert (scaled_font->font_face == font_face)((void) sizeof ((scaled_font->font_face == font_face) ? 1 : 0), __extension__ ({ if (scaled_font->font_face == font_face ) ; else __assert_fail ("scaled_font->font_face == font_face" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1212, __extension__ __PRETTY_FUNCTION__); })); |
| 1213 | assert (! scaled_font->cache_frozen)((void) sizeof ((! scaled_font->cache_frozen) ? 1 : 0), __extension__ ({ if (! scaled_font->cache_frozen) ; else __assert_fail ( "! scaled_font->cache_frozen", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1213, __extension__ __PRETTY_FUNCTION__); })); |
| 1214 | assert (! scaled_font->global_cache_frozen)((void) sizeof ((! scaled_font->global_cache_frozen) ? 1 : 0), __extension__ ({ if (! scaled_font->global_cache_frozen ) ; else __assert_fail ("! scaled_font->global_cache_frozen" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1214, __extension__ __PRETTY_FUNCTION__); })); |
| 1215 | |
| 1216 | scaled_font->original_font_face = |
| 1217 | cairo_font_face_reference_moz_cairo_font_face_reference (original_font_face); |
| 1218 | |
| 1219 | scaled_font->hash_entry.hash = _cairo_scaled_font_compute_hash(scaled_font); |
| 1220 | |
| 1221 | status = _cairo_hash_table_insert (font_map->hash_table, |
| 1222 | &scaled_font->hash_entry); |
| 1223 | if (likely (status == CAIRO_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_STATUS_SUCCESS), 1))) { |
| 1224 | old = font_map->mru_scaled_font; |
| 1225 | font_map->mru_scaled_font = scaled_font; |
| 1226 | _cairo_reference_count_inc (&scaled_font->ref_count)((void) __atomic_fetch_add(&(&scaled_font->ref_count )->ref_count, 1, 5)); |
| 1227 | } |
| 1228 | |
| 1229 | _cairo_scaled_font_map_unlock (); |
| 1230 | |
| 1231 | cairo_scaled_font_destroy_moz_cairo_scaled_font_destroy (old); |
| 1232 | if (font_face != original_font_face) |
| 1233 | cairo_font_face_destroy_moz_cairo_font_face_destroy (font_face); |
| 1234 | |
| 1235 | if (dead != NULL((void*)0)) |
| 1236 | cairo_scaled_font_destroy_moz_cairo_scaled_font_destroy (dead); |
| 1237 | |
| 1238 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 1239 | /* We can't call _cairo_scaled_font_destroy here since it expects |
| 1240 | * that the font has already been successfully inserted into the |
| 1241 | * hash table. */ |
| 1242 | _cairo_scaled_font_fini_internal (scaled_font); |
| 1243 | free (scaled_font); |
| 1244 | return _cairo_scaled_font_create_in_error (status); |
| 1245 | } |
| 1246 | |
| 1247 | return scaled_font; |
| 1248 | } |
| 1249 | |
| 1250 | static cairo_scaled_font_t *_cairo_scaled_font_nil_objects[CAIRO_STATUS_LAST_STATUS + 1]; |
| 1251 | |
| 1252 | /* XXX This should disappear in favour of a common pool of error objects. */ |
| 1253 | cairo_scaled_font_t * |
| 1254 | _cairo_scaled_font_create_in_error (cairo_status_t status) |
| 1255 | { |
| 1256 | cairo_scaled_font_t *scaled_font; |
| 1257 | |
| 1258 | assert (status != CAIRO_STATUS_SUCCESS)((void) sizeof ((status != CAIRO_STATUS_SUCCESS) ? 1 : 0), __extension__ ({ if (status != CAIRO_STATUS_SUCCESS) ; else __assert_fail ( "status != CAIRO_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1258, __extension__ __PRETTY_FUNCTION__); })); |
| 1259 | |
| 1260 | if (status == CAIRO_STATUS_NO_MEMORY) |
| 1261 | return (cairo_scaled_font_t *) &_cairo_scaled_font_nil; |
| 1262 | |
| 1263 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_error_mutex)pthread_mutex_lock (&(_cairo_scaled_font_error_mutex)); |
| 1264 | scaled_font = _cairo_scaled_font_nil_objects[status]; |
| 1265 | if (unlikely (scaled_font == NULL)(__builtin_expect (!!(scaled_font == ((void*)0)), 0))) { |
| 1266 | scaled_font = _cairo_malloc (sizeof (cairo_scaled_font_t))((sizeof (cairo_scaled_font_t)) != 0 ? malloc(sizeof (cairo_scaled_font_t )) : ((void*)0)); |
| 1267 | if (unlikely (scaled_font == NULL)(__builtin_expect (!!(scaled_font == ((void*)0)), 0))) { |
| 1268 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex)pthread_mutex_unlock (&(_cairo_scaled_font_error_mutex)); |
| 1269 | _cairo_error_throw (CAIRO_STATUS_NO_MEMORY)do { cairo_status_t status__ = _cairo_error (CAIRO_STATUS_NO_MEMORY ); (void) status__; } while (0); |
| 1270 | return (cairo_scaled_font_t *) &_cairo_scaled_font_nil; |
| 1271 | } |
| 1272 | |
| 1273 | *scaled_font = _cairo_scaled_font_nil; |
| 1274 | scaled_font->status = status; |
| 1275 | _cairo_scaled_font_nil_objects[status] = scaled_font; |
| 1276 | } |
| 1277 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex)pthread_mutex_unlock (&(_cairo_scaled_font_error_mutex)); |
| 1278 | |
| 1279 | return scaled_font; |
| 1280 | } |
| 1281 | |
| 1282 | void |
| 1283 | _cairo_scaled_font_reset_static_data (void) |
| 1284 | { |
| 1285 | int status; |
| 1286 | |
| 1287 | CAIRO_MUTEX_LOCK (_cairo_scaled_font_error_mutex)pthread_mutex_lock (&(_cairo_scaled_font_error_mutex)); |
| 1288 | for (status = CAIRO_STATUS_SUCCESS; |
| 1289 | status <= CAIRO_STATUS_LAST_STATUS; |
| 1290 | status++) |
| 1291 | { |
| 1292 | free (_cairo_scaled_font_nil_objects[status]); |
| 1293 | _cairo_scaled_font_nil_objects[status] = NULL((void*)0); |
| 1294 | } |
| 1295 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_font_error_mutex)pthread_mutex_unlock (&(_cairo_scaled_font_error_mutex)); |
| 1296 | |
| 1297 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex)pthread_mutex_lock (&(_cairo_scaled_glyph_page_cache_mutex )); |
| 1298 | if (cairo_scaled_glyph_page_cache.hash_table != NULL((void*)0)) { |
| 1299 | _cairo_cache_fini (&cairo_scaled_glyph_page_cache); |
| 1300 | cairo_scaled_glyph_page_cache.hash_table = NULL((void*)0); |
| 1301 | } |
| 1302 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex)pthread_mutex_unlock (&(_cairo_scaled_glyph_page_cache_mutex )); |
| 1303 | } |
| 1304 | |
| 1305 | /** |
| 1306 | * cairo_scaled_font_reference: |
| 1307 | * @scaled_font: a #cairo_scaled_font_t, (may be %NULL in which case |
| 1308 | * this function does nothing) |
| 1309 | * |
| 1310 | * Increases the reference count on @scaled_font by one. This prevents |
| 1311 | * @scaled_font from being destroyed until a matching call to |
| 1312 | * cairo_scaled_font_destroy() is made. |
| 1313 | * |
| 1314 | * Use cairo_scaled_font_get_reference_count() to get the number of |
| 1315 | * references to a #cairo_scaled_font_t. |
| 1316 | * |
| 1317 | * Returns: the referenced #cairo_scaled_font_t |
| 1318 | * |
| 1319 | * Since: 1.0 |
| 1320 | **/ |
| 1321 | cairo_scaled_font_t * |
| 1322 | cairo_scaled_font_reference_moz_cairo_scaled_font_reference (cairo_scaled_font_t *scaled_font) |
| 1323 | { |
| 1324 | if (scaled_font == NULL((void*)0) || |
| 1325 | CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)(_cairo_atomic_int_get (&(&scaled_font->ref_count) ->ref_count) == ((cairo_atomic_int_t) -1))) |
| 1326 | return scaled_font; |
| 1327 | |
| 1328 | assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count))((void) sizeof (((_cairo_atomic_int_get (&(&scaled_font ->ref_count)->ref_count) > 0)) ? 1 : 0), __extension__ ({ if ((_cairo_atomic_int_get (&(&scaled_font->ref_count )->ref_count) > 0)) ; else __assert_fail ("CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1328, __extension__ __PRETTY_FUNCTION__); })); |
| 1329 | |
| 1330 | _cairo_reference_count_inc (&scaled_font->ref_count)((void) __atomic_fetch_add(&(&scaled_font->ref_count )->ref_count, 1, 5)); |
| 1331 | |
| 1332 | return scaled_font; |
| 1333 | } |
| 1334 | |
| 1335 | /** |
| 1336 | * cairo_scaled_font_destroy: |
| 1337 | * @scaled_font: a #cairo_scaled_font_t |
| 1338 | * |
| 1339 | * Decreases the reference count on @font by one. If the result |
| 1340 | * is zero, then @font and all associated resources are freed. |
| 1341 | * See cairo_scaled_font_reference(). |
| 1342 | * |
| 1343 | * Since: 1.0 |
| 1344 | **/ |
| 1345 | void |
| 1346 | cairo_scaled_font_destroy_moz_cairo_scaled_font_destroy (cairo_scaled_font_t *scaled_font) |
| 1347 | { |
| 1348 | cairo_scaled_font_t *lru = NULL((void*)0); |
| 1349 | cairo_scaled_font_map_t *font_map; |
| 1350 | |
| 1351 | assert (CAIRO_MUTEX_IS_UNLOCKED (_cairo_scaled_font_map_mutex))((void) sizeof ((1) ? 1 : 0), __extension__ ({ if (1) ; else __assert_fail ("CAIRO_MUTEX_IS_UNLOCKED (_cairo_scaled_font_map_mutex)", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1351, __extension__ __PRETTY_FUNCTION__); })); |
| 1352 | |
| 1353 | if (scaled_font == NULL((void*)0) || |
| 1354 | CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)(_cairo_atomic_int_get (&(&scaled_font->ref_count) ->ref_count) == ((cairo_atomic_int_t) -1))) |
| 1355 | return; |
| 1356 | |
| 1357 | assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count))((void) sizeof (((_cairo_atomic_int_get (&(&scaled_font ->ref_count)->ref_count) > 0)) ? 1 : 0), __extension__ ({ if ((_cairo_atomic_int_get (&(&scaled_font->ref_count )->ref_count) > 0)) ; else __assert_fail ("CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1357, __extension__ __PRETTY_FUNCTION__); })); |
| 1358 | |
| 1359 | font_map = _cairo_scaled_font_map_lock (); |
| 1360 | assert (font_map != NULL)((void) sizeof ((font_map != ((void*)0)) ? 1 : 0), __extension__ ({ if (font_map != ((void*)0)) ; else __assert_fail ("font_map != NULL" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1360, __extension__ __PRETTY_FUNCTION__); })); |
| 1361 | |
| 1362 | if (! _cairo_reference_count_dec_and_test (&scaled_font->ref_count)(__atomic_fetch_sub(&(&scaled_font->ref_count)-> ref_count, 1, 5) == 1)) |
| 1363 | goto unlock; |
| 1364 | |
| 1365 | assert (! scaled_font->cache_frozen)((void) sizeof ((! scaled_font->cache_frozen) ? 1 : 0), __extension__ ({ if (! scaled_font->cache_frozen) ; else __assert_fail ( "! scaled_font->cache_frozen", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1365, __extension__ __PRETTY_FUNCTION__); })); |
| 1366 | assert (! scaled_font->global_cache_frozen)((void) sizeof ((! scaled_font->global_cache_frozen) ? 1 : 0), __extension__ ({ if (! scaled_font->global_cache_frozen ) ; else __assert_fail ("! scaled_font->global_cache_frozen" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1366, __extension__ __PRETTY_FUNCTION__); })); |
| 1367 | |
| 1368 | /* Another thread may have resurrected the font whilst we waited */ |
| 1369 | if (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&scaled_font->ref_count)(_cairo_atomic_int_get (&(&scaled_font->ref_count) ->ref_count) > 0)) { |
| 1370 | if (! scaled_font->placeholder && |
| 1371 | scaled_font->hash_entry.hash != ZOMBIE0) |
| 1372 | { |
| 1373 | /* Another thread may have already inserted us into the holdovers */ |
| 1374 | if (scaled_font->holdover) |
| 1375 | goto unlock; |
| 1376 | |
| 1377 | /* Rather than immediately destroying this object, we put it into |
| 1378 | * the font_map->holdovers array in case it will get used again |
| 1379 | * soon (and is why we must hold the lock over the atomic op on |
| 1380 | * the reference count). To make room for it, we do actually |
| 1381 | * destroy the least-recently-used holdover. |
| 1382 | */ |
| 1383 | |
| 1384 | if (font_map->num_holdovers == CAIRO_SCALED_FONT_MAX_HOLDOVERS256) { |
| 1385 | lru = font_map->holdovers[0]; |
| 1386 | assert (! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&lru->ref_count))((void) sizeof ((! (_cairo_atomic_int_get (&(&lru-> ref_count)->ref_count) > 0)) ? 1 : 0), __extension__ ({ if (! (_cairo_atomic_int_get (&(&lru->ref_count)-> ref_count) > 0)) ; else __assert_fail ("! CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&lru->ref_count)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 1386, __extension__ __PRETTY_FUNCTION__); })); |
| 1387 | |
| 1388 | _cairo_hash_table_remove (font_map->hash_table, |
| 1389 | &lru->hash_entry); |
| 1390 | |
| 1391 | font_map->num_holdovers--; |
| 1392 | memmove (&font_map->holdovers[0], |
| 1393 | &font_map->holdovers[1], |
| 1394 | font_map->num_holdovers * sizeof (cairo_scaled_font_t*)); |
| 1395 | } |
| 1396 | |
| 1397 | font_map->holdovers[font_map->num_holdovers++] = scaled_font; |
| 1398 | scaled_font->holdover = TRUE1; |
| 1399 | } else |
| 1400 | lru = scaled_font; |
| 1401 | } |
| 1402 | |
| 1403 | unlock: |
| 1404 | _cairo_scaled_font_map_unlock (); |
| 1405 | |
| 1406 | /* If we pulled an item from the holdovers array, (while the font |
| 1407 | * map lock was held, of course), then there is no way that anyone |
| 1408 | * else could have acquired a reference to it. So we can now |
| 1409 | * safely call fini on it without any lock held. This is desirable |
| 1410 | * as we never want to call into any backend function with a lock |
| 1411 | * held. */ |
| 1412 | if (lru != NULL((void*)0)) { |
| 1413 | _cairo_scaled_font_fini_internal (lru); |
| 1414 | free (lru); |
| 1415 | } |
| 1416 | } |
| 1417 | |
| 1418 | /** |
| 1419 | * cairo_scaled_font_get_reference_count: |
| 1420 | * @scaled_font: a #cairo_scaled_font_t |
| 1421 | * |
| 1422 | * Returns the current reference count of @scaled_font. |
| 1423 | * |
| 1424 | * Return value: the current reference count of @scaled_font. If the |
| 1425 | * object is a nil object, 0 will be returned. |
| 1426 | * |
| 1427 | * Since: 1.4 |
| 1428 | **/ |
| 1429 | unsigned int |
| 1430 | cairo_scaled_font_get_reference_count_moz_cairo_scaled_font_get_reference_count (cairo_scaled_font_t *scaled_font) |
| 1431 | { |
| 1432 | if (scaled_font == NULL((void*)0) || |
| 1433 | CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)(_cairo_atomic_int_get (&(&scaled_font->ref_count) ->ref_count) == ((cairo_atomic_int_t) -1))) |
| 1434 | return 0; |
| 1435 | |
| 1436 | return CAIRO_REFERENCE_COUNT_GET_VALUE (&scaled_font->ref_count)_cairo_atomic_int_get (&(&scaled_font->ref_count)-> ref_count); |
| 1437 | } |
| 1438 | |
| 1439 | /** |
| 1440 | * cairo_scaled_font_get_user_data: |
| 1441 | * @scaled_font: a #cairo_scaled_font_t |
| 1442 | * @key: the address of the #cairo_user_data_key_t the user data was |
| 1443 | * attached to |
| 1444 | * |
| 1445 | * Return user data previously attached to @scaled_font using the |
| 1446 | * specified key. If no user data has been attached with the given |
| 1447 | * key this function returns %NULL. |
| 1448 | * |
| 1449 | * Return value: the user data previously attached or %NULL. |
| 1450 | * |
| 1451 | * Since: 1.4 |
| 1452 | **/ |
| 1453 | void * |
| 1454 | cairo_scaled_font_get_user_data_moz_cairo_scaled_font_get_user_data (cairo_scaled_font_t *scaled_font, |
| 1455 | const cairo_user_data_key_t *key) |
| 1456 | { |
| 1457 | return _cairo_user_data_array_get_data (&scaled_font->user_data, |
| 1458 | key); |
| 1459 | } |
| 1460 | |
| 1461 | /** |
| 1462 | * cairo_scaled_font_set_user_data: |
| 1463 | * @scaled_font: a #cairo_scaled_font_t |
| 1464 | * @key: the address of a #cairo_user_data_key_t to attach the user data to |
| 1465 | * @user_data: the user data to attach to the #cairo_scaled_font_t |
| 1466 | * @destroy: a #cairo_destroy_func_t which will be called when the |
| 1467 | * #cairo_t is destroyed or when new user data is attached using the |
| 1468 | * same key. |
| 1469 | * |
| 1470 | * Attach user data to @scaled_font. To remove user data from a surface, |
| 1471 | * call this function with the key that was used to set it and %NULL |
| 1472 | * for @data. |
| 1473 | * |
| 1474 | * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a |
| 1475 | * slot could not be allocated for the user data. |
| 1476 | * |
| 1477 | * Since: 1.4 |
| 1478 | **/ |
| 1479 | cairo_status_t |
| 1480 | cairo_scaled_font_set_user_data_moz_cairo_scaled_font_set_user_data (cairo_scaled_font_t *scaled_font, |
| 1481 | const cairo_user_data_key_t *key, |
| 1482 | void *user_data, |
| 1483 | cairo_destroy_func_t destroy) |
| 1484 | { |
| 1485 | if (CAIRO_REFERENCE_COUNT_IS_INVALID (&scaled_font->ref_count)(_cairo_atomic_int_get (&(&scaled_font->ref_count) ->ref_count) == ((cairo_atomic_int_t) -1))) |
| 1486 | return scaled_font->status; |
| 1487 | |
| 1488 | return _cairo_user_data_array_set_data (&scaled_font->user_data, |
| 1489 | key, user_data, destroy); |
| 1490 | } |
| 1491 | |
| 1492 | /* Public font API follows. */ |
| 1493 | |
| 1494 | /** |
| 1495 | * cairo_scaled_font_extents: |
| 1496 | * @scaled_font: a #cairo_scaled_font_t |
| 1497 | * @extents: a #cairo_font_extents_t which to store the retrieved extents. |
| 1498 | * |
| 1499 | * Gets the metrics for a #cairo_scaled_font_t. |
| 1500 | * |
| 1501 | * Since: 1.0 |
| 1502 | **/ |
| 1503 | void |
| 1504 | cairo_scaled_font_extents_moz_cairo_scaled_font_extents (cairo_scaled_font_t *scaled_font, |
| 1505 | cairo_font_extents_t *extents) |
| 1506 | { |
| 1507 | if (scaled_font->status) { |
| 1508 | extents->ascent = 0.0; |
| 1509 | extents->descent = 0.0; |
| 1510 | extents->height = 0.0; |
| 1511 | extents->max_x_advance = 0.0; |
| 1512 | extents->max_y_advance = 0.0; |
| 1513 | return; |
| 1514 | } |
| 1515 | |
| 1516 | *extents = scaled_font->extents; |
| 1517 | } |
| 1518 | |
| 1519 | /** |
| 1520 | * cairo_scaled_font_text_extents: |
| 1521 | * @scaled_font: a #cairo_scaled_font_t |
| 1522 | * @utf8: a NUL-terminated string of text, encoded in UTF-8 |
| 1523 | * @extents: a #cairo_text_extents_t which to store the retrieved extents. |
| 1524 | * |
| 1525 | * Gets the extents for a string of text. The extents describe a |
| 1526 | * user-space rectangle that encloses the "inked" portion of the text |
| 1527 | * drawn at the origin (0,0) (as it would be drawn by cairo_show_text() |
| 1528 | * if the cairo graphics state were set to the same font_face, |
| 1529 | * font_matrix, ctm, and font_options as @scaled_font). Additionally, |
| 1530 | * the x_advance and y_advance values indicate the amount by which the |
| 1531 | * current point would be advanced by cairo_show_text(). |
| 1532 | * |
| 1533 | * Note that whitespace characters do not directly contribute to the |
| 1534 | * size of the rectangle (extents.width and extents.height). They do |
| 1535 | * contribute indirectly by changing the position of non-whitespace |
| 1536 | * characters. In particular, trailing whitespace characters are |
| 1537 | * likely to not affect the size of the rectangle, though they will |
| 1538 | * affect the x_advance and y_advance values. |
| 1539 | * |
| 1540 | * Since: 1.2 |
| 1541 | **/ |
| 1542 | void |
| 1543 | cairo_scaled_font_text_extents_moz_cairo_scaled_font_text_extents (cairo_scaled_font_t *scaled_font, |
| 1544 | const char *utf8, |
| 1545 | cairo_text_extents_t *extents) |
| 1546 | { |
| 1547 | cairo_status_t status; |
| 1548 | cairo_glyph_t *glyphs = NULL((void*)0); |
| 1549 | int num_glyphs; |
| 1550 | |
| 1551 | if (scaled_font->status) |
| 1552 | goto ZERO_EXTENTS; |
| 1553 | |
| 1554 | if (utf8 == NULL((void*)0)) |
| 1555 | goto ZERO_EXTENTS; |
| 1556 | |
| 1557 | status = cairo_scaled_font_text_to_glyphs_moz_cairo_scaled_font_text_to_glyphs (scaled_font, 0., 0., |
| 1558 | utf8, -1, |
| 1559 | &glyphs, &num_glyphs, |
| 1560 | NULL((void*)0), NULL((void*)0), |
| 1561 | NULL((void*)0)); |
| 1562 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 1563 | status = _cairo_scaled_font_set_error (scaled_font, status); |
| 1564 | goto ZERO_EXTENTS; |
| 1565 | } |
| 1566 | |
| 1567 | cairo_scaled_font_glyph_extents_moz_cairo_scaled_font_glyph_extents (scaled_font, glyphs, num_glyphs, extents); |
| 1568 | free (glyphs); |
| 1569 | |
| 1570 | return; |
| 1571 | |
| 1572 | ZERO_EXTENTS: |
| 1573 | extents->x_bearing = 0.0; |
| 1574 | extents->y_bearing = 0.0; |
| 1575 | extents->width = 0.0; |
| 1576 | extents->height = 0.0; |
| 1577 | extents->x_advance = 0.0; |
| 1578 | extents->y_advance = 0.0; |
| 1579 | } |
| 1580 | |
| 1581 | /** |
| 1582 | * cairo_scaled_font_glyph_extents: |
| 1583 | * @scaled_font: a #cairo_scaled_font_t |
| 1584 | * @glyphs: an array of glyph IDs with X and Y offsets. |
| 1585 | * @num_glyphs: the number of glyphs in the @glyphs array |
| 1586 | * @extents: a #cairo_text_extents_t which to store the retrieved extents. |
| 1587 | * |
| 1588 | * Gets the extents for an array of glyphs. The extents describe a |
| 1589 | * user-space rectangle that encloses the "inked" portion of the |
| 1590 | * glyphs, (as they would be drawn by cairo_show_glyphs() if the cairo |
| 1591 | * graphics state were set to the same font_face, font_matrix, ctm, |
| 1592 | * and font_options as @scaled_font). Additionally, the x_advance and |
| 1593 | * y_advance values indicate the amount by which the current point |
| 1594 | * would be advanced by cairo_show_glyphs(). |
| 1595 | * |
| 1596 | * Note that whitespace glyphs do not contribute to the size of the |
| 1597 | * rectangle (extents.width and extents.height). |
| 1598 | * |
| 1599 | * Since: 1.0 |
| 1600 | **/ |
| 1601 | void |
| 1602 | cairo_scaled_font_glyph_extents_moz_cairo_scaled_font_glyph_extents (cairo_scaled_font_t *scaled_font, |
| 1603 | const cairo_glyph_t *glyphs, |
| 1604 | int num_glyphs, |
| 1605 | cairo_text_extents_t *extents) |
| 1606 | { |
| 1607 | cairo_status_t status; |
| 1608 | int i; |
| 1609 | double min_x = 0.0, min_y = 0.0, max_x = 0.0, max_y = 0.0; |
| 1610 | cairo_bool_t visible = FALSE0; |
| 1611 | cairo_scaled_glyph_t *scaled_glyph = NULL((void*)0); |
| 1612 | |
| 1613 | extents->x_bearing = 0.0; |
| 1614 | extents->y_bearing = 0.0; |
| 1615 | extents->width = 0.0; |
| 1616 | extents->height = 0.0; |
| 1617 | extents->x_advance = 0.0; |
| 1618 | extents->y_advance = 0.0; |
| 1619 | |
| 1620 | if (unlikely (scaled_font->status)(__builtin_expect (!!(scaled_font->status), 0))) |
| 1621 | goto ZERO_EXTENTS; |
| 1622 | |
| 1623 | if (num_glyphs == 0) |
| 1624 | goto ZERO_EXTENTS; |
| 1625 | |
| 1626 | if (unlikely (num_glyphs < 0)(__builtin_expect (!!(num_glyphs < 0), 0))) { |
| 1627 | _cairo_error_throw (CAIRO_STATUS_NEGATIVE_COUNT)do { cairo_status_t status__ = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT ); (void) status__; } while (0); |
| 1628 | /* XXX Can't propagate error */ |
| 1629 | goto ZERO_EXTENTS; |
| 1630 | } |
| 1631 | |
| 1632 | if (unlikely (glyphs == NULL)(__builtin_expect (!!(glyphs == ((void*)0)), 0))) { |
| 1633 | _cairo_error_throw (CAIRO_STATUS_NULL_POINTER)do { cairo_status_t status__ = _cairo_error (CAIRO_STATUS_NULL_POINTER ); (void) status__; } while (0); |
| 1634 | /* XXX Can't propagate error */ |
| 1635 | goto ZERO_EXTENTS; |
| 1636 | } |
| 1637 | |
| 1638 | _cairo_scaled_font_freeze_cache (scaled_font); |
| 1639 | |
| 1640 | for (i = 0; i < num_glyphs; i++) { |
| 1641 | double left, top, right, bottom; |
| 1642 | |
| 1643 | status = _cairo_scaled_glyph_lookup (scaled_font, |
| 1644 | glyphs[i].index, |
| 1645 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
| 1646 | NULL((void*)0), /* foreground color */ |
| 1647 | &scaled_glyph); |
| 1648 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 1649 | status = _cairo_scaled_font_set_error (scaled_font, status); |
Value stored to 'status' is never read | |
| 1650 | goto UNLOCK; |
| 1651 | } |
| 1652 | |
| 1653 | /* "Ink" extents should skip "invisible" glyphs */ |
| 1654 | if (scaled_glyph->metrics.width == 0 || scaled_glyph->metrics.height == 0) |
| 1655 | continue; |
| 1656 | |
| 1657 | left = scaled_glyph->metrics.x_bearing + glyphs[i].x; |
| 1658 | right = left + scaled_glyph->metrics.width; |
| 1659 | top = scaled_glyph->metrics.y_bearing + glyphs[i].y; |
| 1660 | bottom = top + scaled_glyph->metrics.height; |
| 1661 | |
| 1662 | if (!visible) { |
| 1663 | visible = TRUE1; |
| 1664 | min_x = left; |
| 1665 | max_x = right; |
| 1666 | min_y = top; |
| 1667 | max_y = bottom; |
| 1668 | } else { |
| 1669 | if (left < min_x) min_x = left; |
| 1670 | if (right > max_x) max_x = right; |
| 1671 | if (top < min_y) min_y = top; |
| 1672 | if (bottom > max_y) max_y = bottom; |
| 1673 | } |
| 1674 | } |
| 1675 | |
| 1676 | if (visible) { |
| 1677 | extents->x_bearing = min_x - glyphs[0].x; |
| 1678 | extents->y_bearing = min_y - glyphs[0].y; |
| 1679 | extents->width = max_x - min_x; |
| 1680 | extents->height = max_y - min_y; |
| 1681 | } else { |
| 1682 | extents->x_bearing = 0.0; |
| 1683 | extents->y_bearing = 0.0; |
| 1684 | extents->width = 0.0; |
| 1685 | extents->height = 0.0; |
| 1686 | } |
| 1687 | |
| 1688 | if (num_glyphs) { |
| 1689 | double x0, y0, x1, y1; |
| 1690 | |
| 1691 | x0 = glyphs[0].x; |
| 1692 | y0 = glyphs[0].y; |
| 1693 | |
| 1694 | /* scaled_glyph contains the glyph for num_glyphs - 1 already. */ |
| 1695 | x1 = glyphs[num_glyphs - 1].x + scaled_glyph->metrics.x_advance; |
| 1696 | y1 = glyphs[num_glyphs - 1].y + scaled_glyph->metrics.y_advance; |
| 1697 | |
| 1698 | extents->x_advance = x1 - x0; |
| 1699 | extents->y_advance = y1 - y0; |
| 1700 | } else { |
| 1701 | extents->x_advance = 0.0; |
| 1702 | extents->y_advance = 0.0; |
| 1703 | } |
| 1704 | |
| 1705 | UNLOCK: |
| 1706 | _cairo_scaled_font_thaw_cache (scaled_font); |
| 1707 | return; |
| 1708 | |
| 1709 | ZERO_EXTENTS: |
| 1710 | extents->x_bearing = 0.0; |
| 1711 | extents->y_bearing = 0.0; |
| 1712 | extents->width = 0.0; |
| 1713 | extents->height = 0.0; |
| 1714 | extents->x_advance = 0.0; |
| 1715 | extents->y_advance = 0.0; |
| 1716 | } |
| 1717 | |
| 1718 | #define GLYPH_LUT_SIZE64 64 |
| 1719 | static cairo_status_t |
| 1720 | cairo_scaled_font_text_to_glyphs_internal_cached (cairo_scaled_font_t *scaled_font, |
| 1721 | double x, |
| 1722 | double y, |
| 1723 | const char *utf8, |
| 1724 | cairo_glyph_t *glyphs, |
| 1725 | cairo_text_cluster_t **clusters, |
| 1726 | int num_chars) |
| 1727 | { |
| 1728 | struct glyph_lut_elt { |
| 1729 | unsigned long index; |
| 1730 | double x_advance; |
| 1731 | double y_advance; |
| 1732 | } glyph_lut[GLYPH_LUT_SIZE64]; |
| 1733 | uint32_t glyph_lut_unicode[GLYPH_LUT_SIZE64]; |
| 1734 | cairo_status_t status; |
| 1735 | const char *p; |
| 1736 | int i; |
| 1737 | |
| 1738 | for (i = 0; i < GLYPH_LUT_SIZE64; i++) |
| 1739 | glyph_lut_unicode[i] = ~0U; |
| 1740 | |
| 1741 | p = utf8; |
| 1742 | for (i = 0; i < num_chars; i++) { |
| 1743 | int idx, num_bytes; |
| 1744 | uint32_t unicode; |
| 1745 | cairo_scaled_glyph_t *scaled_glyph; |
| 1746 | struct glyph_lut_elt *glyph_slot; |
| 1747 | |
| 1748 | num_bytes = _cairo_utf8_get_char_validated (p, &unicode); |
| 1749 | p += num_bytes; |
| 1750 | |
| 1751 | glyphs[i].x = x; |
| 1752 | glyphs[i].y = y; |
| 1753 | |
| 1754 | idx = unicode % ARRAY_LENGTH (glyph_lut)((int) (sizeof (glyph_lut) / sizeof (glyph_lut[0]))); |
| 1755 | glyph_slot = &glyph_lut[idx]; |
| 1756 | if (glyph_lut_unicode[idx] == unicode) { |
| 1757 | glyphs[i].index = glyph_slot->index; |
| 1758 | x += glyph_slot->x_advance; |
| 1759 | y += glyph_slot->y_advance; |
| 1760 | } else { |
| 1761 | unsigned long g; |
| 1762 | |
| 1763 | g = scaled_font->backend->ucs4_to_index (scaled_font, unicode); |
| 1764 | status = _cairo_scaled_glyph_lookup (scaled_font, |
| 1765 | g, |
| 1766 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
| 1767 | NULL((void*)0), /* foreground color */ |
| 1768 | &scaled_glyph); |
| 1769 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1770 | return status; |
| 1771 | |
| 1772 | x += scaled_glyph->metrics.x_advance; |
| 1773 | y += scaled_glyph->metrics.y_advance; |
| 1774 | |
| 1775 | glyph_lut_unicode[idx] = unicode; |
| 1776 | glyph_slot->index = g; |
| 1777 | glyph_slot->x_advance = scaled_glyph->metrics.x_advance; |
| 1778 | glyph_slot->y_advance = scaled_glyph->metrics.y_advance; |
| 1779 | |
| 1780 | glyphs[i].index = g; |
| 1781 | } |
| 1782 | |
| 1783 | if (clusters) { |
| 1784 | (*clusters)[i].num_bytes = num_bytes; |
| 1785 | (*clusters)[i].num_glyphs = 1; |
| 1786 | } |
| 1787 | } |
| 1788 | |
| 1789 | return CAIRO_STATUS_SUCCESS; |
| 1790 | } |
| 1791 | |
| 1792 | static cairo_status_t |
| 1793 | cairo_scaled_font_text_to_glyphs_internal_uncached (cairo_scaled_font_t *scaled_font, |
| 1794 | double x, |
| 1795 | double y, |
| 1796 | const char *utf8, |
| 1797 | cairo_glyph_t *glyphs, |
| 1798 | cairo_text_cluster_t **clusters, |
| 1799 | int num_chars) |
| 1800 | { |
| 1801 | const char *p; |
| 1802 | int i; |
| 1803 | |
| 1804 | p = utf8; |
| 1805 | for (i = 0; i < num_chars; i++) { |
| 1806 | unsigned long g; |
| 1807 | int num_bytes; |
| 1808 | uint32_t unicode; |
| 1809 | cairo_scaled_glyph_t *scaled_glyph; |
| 1810 | cairo_status_t status; |
| 1811 | |
| 1812 | num_bytes = _cairo_utf8_get_char_validated (p, &unicode); |
| 1813 | p += num_bytes; |
| 1814 | |
| 1815 | glyphs[i].x = x; |
| 1816 | glyphs[i].y = y; |
| 1817 | |
| 1818 | g = scaled_font->backend->ucs4_to_index (scaled_font, unicode); |
| 1819 | |
| 1820 | /* |
| 1821 | * No advance needed for a single character string. So, let's speed up |
| 1822 | * one-character strings by skipping glyph lookup. |
| 1823 | */ |
| 1824 | if (num_chars > 1) { |
| 1825 | status = _cairo_scaled_glyph_lookup (scaled_font, |
| 1826 | g, |
| 1827 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
| 1828 | NULL((void*)0), /* foreground color */ |
| 1829 | &scaled_glyph); |
| 1830 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1831 | return status; |
| 1832 | |
| 1833 | x += scaled_glyph->metrics.x_advance; |
| 1834 | y += scaled_glyph->metrics.y_advance; |
| 1835 | } |
| 1836 | |
| 1837 | glyphs[i].index = g; |
| 1838 | |
| 1839 | if (clusters) { |
| 1840 | (*clusters)[i].num_bytes = num_bytes; |
| 1841 | (*clusters)[i].num_glyphs = 1; |
| 1842 | } |
| 1843 | } |
| 1844 | |
| 1845 | return CAIRO_STATUS_SUCCESS; |
| 1846 | } |
| 1847 | |
| 1848 | /** |
| 1849 | * cairo_scaled_font_text_to_glyphs: |
| 1850 | * @scaled_font: a #cairo_scaled_font_t |
| 1851 | * @x: X position to place first glyph |
| 1852 | * @y: Y position to place first glyph |
| 1853 | * @utf8: a string of text encoded in UTF-8 |
| 1854 | * @utf8_len: length of @utf8 in bytes, or -1 if it is NUL-terminated |
| 1855 | * @glyphs: pointer to array of glyphs to fill |
| 1856 | * @num_glyphs: pointer to number of glyphs |
| 1857 | * @clusters: pointer to array of cluster mapping information to fill, or %NULL |
| 1858 | * @num_clusters: pointer to number of clusters, or %NULL |
| 1859 | * @cluster_flags: pointer to location to store cluster flags corresponding to the |
| 1860 | * output @clusters, or %NULL |
| 1861 | * |
| 1862 | * Converts UTF-8 text to an array of glyphs, optionally with cluster |
| 1863 | * mapping, that can be used to render later using @scaled_font. |
| 1864 | * |
| 1865 | * If @glyphs initially points to a non-%NULL value, that array is used |
| 1866 | * as a glyph buffer, and @num_glyphs should point to the number of glyph |
| 1867 | * entries available there. If the provided glyph array is too short for |
| 1868 | * the conversion, a new glyph array is allocated using cairo_glyph_allocate() |
| 1869 | * and placed in @glyphs. Upon return, @num_glyphs always contains the |
| 1870 | * number of generated glyphs. If the value @glyphs points to has changed |
| 1871 | * after the call, the user is responsible for freeing the allocated glyph |
| 1872 | * array using cairo_glyph_free(). This may happen even if the provided |
| 1873 | * array was large enough. |
| 1874 | * |
| 1875 | * If @clusters is not %NULL, @num_clusters and @cluster_flags should not be %NULL, |
| 1876 | * and cluster mapping will be computed. |
| 1877 | * The semantics of how cluster array allocation works is similar to the glyph |
| 1878 | * array. That is, |
| 1879 | * if @clusters initially points to a non-%NULL value, that array is used |
| 1880 | * as a cluster buffer, and @num_clusters should point to the number of cluster |
| 1881 | * entries available there. If the provided cluster array is too short for |
| 1882 | * the conversion, a new cluster array is allocated using cairo_text_cluster_allocate() |
| 1883 | * and placed in @clusters. Upon return, @num_clusters always contains the |
| 1884 | * number of generated clusters. If the value @clusters points at has changed |
| 1885 | * after the call, the user is responsible for freeing the allocated cluster |
| 1886 | * array using cairo_text_cluster_free(). This may happen even if the provided |
| 1887 | * array was large enough. |
| 1888 | * |
| 1889 | * In the simplest case, @glyphs and @clusters can point to %NULL initially |
| 1890 | * and a suitable array will be allocated. In code: |
| 1891 | * <informalexample><programlisting> |
| 1892 | * cairo_status_t status; |
| 1893 | * |
| 1894 | * cairo_glyph_t *glyphs = NULL; |
| 1895 | * int num_glyphs; |
| 1896 | * cairo_text_cluster_t *clusters = NULL; |
| 1897 | * int num_clusters; |
| 1898 | * cairo_text_cluster_flags_t cluster_flags; |
| 1899 | * |
| 1900 | * status = cairo_scaled_font_text_to_glyphs (scaled_font, |
| 1901 | * x, y, |
| 1902 | * utf8, utf8_len, |
| 1903 | * &glyphs, &num_glyphs, |
| 1904 | * &clusters, &num_clusters, &cluster_flags); |
| 1905 | * |
| 1906 | * if (status == CAIRO_STATUS_SUCCESS) { |
| 1907 | * cairo_show_text_glyphs (cr, |
| 1908 | * utf8, utf8_len, |
| 1909 | * glyphs, num_glyphs, |
| 1910 | * clusters, num_clusters, cluster_flags); |
| 1911 | * |
| 1912 | * cairo_glyph_free (glyphs); |
| 1913 | * cairo_text_cluster_free (clusters); |
| 1914 | * } |
| 1915 | * </programlisting></informalexample> |
| 1916 | * |
| 1917 | * If no cluster mapping is needed: |
| 1918 | * <informalexample><programlisting> |
| 1919 | * cairo_status_t status; |
| 1920 | * |
| 1921 | * cairo_glyph_t *glyphs = NULL; |
| 1922 | * int num_glyphs; |
| 1923 | * |
| 1924 | * status = cairo_scaled_font_text_to_glyphs (scaled_font, |
| 1925 | * x, y, |
| 1926 | * utf8, utf8_len, |
| 1927 | * &glyphs, &num_glyphs, |
| 1928 | * NULL, NULL, |
| 1929 | * NULL); |
| 1930 | * |
| 1931 | * if (status == CAIRO_STATUS_SUCCESS) { |
| 1932 | * cairo_show_glyphs (cr, glyphs, num_glyphs); |
| 1933 | * cairo_glyph_free (glyphs); |
| 1934 | * } |
| 1935 | * </programlisting></informalexample> |
| 1936 | * |
| 1937 | * If stack-based glyph and cluster arrays are to be used for small |
| 1938 | * arrays: |
| 1939 | * <informalexample><programlisting> |
| 1940 | * cairo_status_t status; |
| 1941 | * |
| 1942 | * cairo_glyph_t stack_glyphs[40]; |
| 1943 | * cairo_glyph_t *glyphs = stack_glyphs; |
| 1944 | * int num_glyphs = sizeof (stack_glyphs) / sizeof (stack_glyphs[0]); |
| 1945 | * cairo_text_cluster_t stack_clusters[40]; |
| 1946 | * cairo_text_cluster_t *clusters = stack_clusters; |
| 1947 | * int num_clusters = sizeof (stack_clusters) / sizeof (stack_clusters[0]); |
| 1948 | * cairo_text_cluster_flags_t cluster_flags; |
| 1949 | * |
| 1950 | * status = cairo_scaled_font_text_to_glyphs (scaled_font, |
| 1951 | * x, y, |
| 1952 | * utf8, utf8_len, |
| 1953 | * &glyphs, &num_glyphs, |
| 1954 | * &clusters, &num_clusters, &cluster_flags); |
| 1955 | * |
| 1956 | * if (status == CAIRO_STATUS_SUCCESS) { |
| 1957 | * cairo_show_text_glyphs (cr, |
| 1958 | * utf8, utf8_len, |
| 1959 | * glyphs, num_glyphs, |
| 1960 | * clusters, num_clusters, cluster_flags); |
| 1961 | * |
| 1962 | * if (glyphs != stack_glyphs) |
| 1963 | * cairo_glyph_free (glyphs); |
| 1964 | * if (clusters != stack_clusters) |
| 1965 | * cairo_text_cluster_free (clusters); |
| 1966 | * } |
| 1967 | * </programlisting></informalexample> |
| 1968 | * |
| 1969 | * For details of how @clusters, @num_clusters, and @cluster_flags map input |
| 1970 | * UTF-8 text to the output glyphs see cairo_show_text_glyphs(). |
| 1971 | * |
| 1972 | * The output values can be readily passed to cairo_show_text_glyphs() |
| 1973 | * cairo_show_glyphs(), or related functions, assuming that the exact |
| 1974 | * same @scaled_font is used for the operation. |
| 1975 | * |
| 1976 | * Return value: %CAIRO_STATUS_SUCCESS upon success, or an error status |
| 1977 | * if the input values are wrong or if conversion failed. If the input |
| 1978 | * values are correct but the conversion failed, the error status is also |
| 1979 | * set on @scaled_font. |
| 1980 | * |
| 1981 | * Since: 1.8 |
| 1982 | **/ |
| 1983 | #define CACHING_THRESHOLD16 16 |
| 1984 | cairo_status_t |
| 1985 | cairo_scaled_font_text_to_glyphs_moz_cairo_scaled_font_text_to_glyphs (cairo_scaled_font_t *scaled_font, |
| 1986 | double x, |
| 1987 | double y, |
| 1988 | const char *utf8, |
| 1989 | int utf8_len, |
| 1990 | cairo_glyph_t **glyphs, |
| 1991 | int *num_glyphs, |
| 1992 | cairo_text_cluster_t **clusters, |
| 1993 | int *num_clusters, |
| 1994 | cairo_text_cluster_flags_t *cluster_flags) |
| 1995 | { |
| 1996 | int num_chars = 0; |
| 1997 | cairo_int_status_t status; |
| 1998 | cairo_glyph_t *orig_glyphs; |
| 1999 | cairo_text_cluster_t *orig_clusters; |
| 2000 | |
| 2001 | status = scaled_font->status; |
| 2002 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2003 | return status; |
| 2004 | |
| 2005 | /* A slew of sanity checks */ |
| 2006 | |
| 2007 | /* glyphs and num_glyphs can't be NULL */ |
| 2008 | if (glyphs == NULL((void*)0) || |
| 2009 | num_glyphs == NULL((void*)0)) { |
| 2010 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
| 2011 | goto BAIL; |
| 2012 | } |
| 2013 | |
| 2014 | /* Special case for NULL and -1 */ |
| 2015 | if (utf8 == NULL((void*)0) && utf8_len == -1) |
| 2016 | utf8_len = 0; |
| 2017 | |
| 2018 | /* No NULLs for non-NULLs! */ |
| 2019 | if ((utf8_len && utf8 == NULL((void*)0)) || |
| 2020 | (clusters && num_clusters == NULL((void*)0)) || |
| 2021 | (clusters && cluster_flags == NULL((void*)0))) { |
| 2022 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
| 2023 | goto BAIL; |
| 2024 | } |
| 2025 | |
| 2026 | /* A -1 for utf8_len means NUL-terminated */ |
| 2027 | if (utf8_len == -1) |
| 2028 | utf8_len = strlen (utf8); |
| 2029 | |
| 2030 | /* A NULL *glyphs means no prealloced glyphs array */ |
| 2031 | if (glyphs && *glyphs == NULL((void*)0)) |
| 2032 | *num_glyphs = 0; |
| 2033 | |
| 2034 | /* A NULL *clusters means no prealloced clusters array */ |
| 2035 | if (clusters && *clusters == NULL((void*)0)) |
| 2036 | *num_clusters = 0; |
| 2037 | |
| 2038 | if (!clusters && num_clusters) { |
| 2039 | num_clusters = NULL((void*)0); |
| 2040 | } |
| 2041 | |
| 2042 | if (cluster_flags) { |
| 2043 | *cluster_flags = FALSE0; |
| 2044 | } |
| 2045 | |
| 2046 | if (!clusters && cluster_flags) { |
| 2047 | cluster_flags = NULL((void*)0); |
| 2048 | } |
| 2049 | |
| 2050 | /* Apart from that, no negatives */ |
| 2051 | if (utf8_len < 0 || |
| 2052 | *num_glyphs < 0 || |
| 2053 | (num_clusters && *num_clusters < 0)) { |
| 2054 | status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT); |
| 2055 | goto BAIL; |
| 2056 | } |
| 2057 | |
| 2058 | if (utf8_len == 0) { |
| 2059 | status = CAIRO_STATUS_SUCCESS; |
| 2060 | goto BAIL; |
| 2061 | } |
| 2062 | |
| 2063 | /* validate input so backend does not have to */ |
| 2064 | status = _cairo_utf8_to_ucs4 (utf8, utf8_len, NULL((void*)0), &num_chars); |
| 2065 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2066 | goto BAIL; |
| 2067 | |
| 2068 | _cairo_scaled_font_freeze_cache (scaled_font); |
| 2069 | |
| 2070 | orig_glyphs = *glyphs; |
| 2071 | orig_clusters = clusters ? *clusters : NULL((void*)0); |
| 2072 | |
| 2073 | if (scaled_font->backend->text_to_glyphs) { |
| 2074 | status = scaled_font->backend->text_to_glyphs (scaled_font, x, y, |
| 2075 | utf8, utf8_len, |
| 2076 | glyphs, num_glyphs, |
| 2077 | clusters, num_clusters, |
| 2078 | cluster_flags); |
| 2079 | if (status != CAIRO_INT_STATUS_UNSUPPORTED) { |
| 2080 | if (status == CAIRO_INT_STATUS_SUCCESS) { |
| 2081 | /* The checks here are crude; we only should do them in |
| 2082 | * user-font backend, but they don't hurt here. This stuff |
| 2083 | * can be hard to get right. */ |
| 2084 | |
| 2085 | if (*num_glyphs < 0) { |
| 2086 | status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT); |
| 2087 | goto DONE; |
| 2088 | } |
| 2089 | if (*num_glyphs != 0 && *glyphs == NULL((void*)0)) { |
| 2090 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
| 2091 | goto DONE; |
| 2092 | } |
| 2093 | |
| 2094 | if (clusters) { |
| 2095 | if (*num_clusters < 0) { |
| 2096 | status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT); |
| 2097 | goto DONE; |
| 2098 | } |
| 2099 | if (*num_clusters != 0 && *clusters == NULL((void*)0)) { |
| 2100 | status = _cairo_error (CAIRO_STATUS_NULL_POINTER); |
| 2101 | goto DONE; |
| 2102 | } |
| 2103 | |
| 2104 | /* Don't trust the backend, validate clusters! */ |
| 2105 | status = |
| 2106 | _cairo_validate_text_clusters (utf8, utf8_len, |
| 2107 | *glyphs, *num_glyphs, |
| 2108 | *clusters, *num_clusters, |
| 2109 | *cluster_flags); |
| 2110 | } |
| 2111 | } |
| 2112 | |
| 2113 | goto DONE; |
| 2114 | } |
| 2115 | } |
| 2116 | |
| 2117 | if (*num_glyphs < num_chars) { |
| 2118 | *glyphs = cairo_glyph_allocate_moz_cairo_glyph_allocate (num_chars); |
| 2119 | if (unlikely (*glyphs == NULL)(__builtin_expect (!!(*glyphs == ((void*)0)), 0))) { |
| 2120 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2121 | goto DONE; |
| 2122 | } |
| 2123 | } |
| 2124 | *num_glyphs = num_chars; |
| 2125 | |
| 2126 | if (clusters) { |
| 2127 | if (*num_clusters < num_chars) { |
| 2128 | *clusters = cairo_text_cluster_allocate_moz_cairo_text_cluster_allocate (num_chars); |
| 2129 | if (unlikely (*clusters == NULL)(__builtin_expect (!!(*clusters == ((void*)0)), 0))) { |
| 2130 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2131 | goto DONE; |
| 2132 | } |
| 2133 | } |
| 2134 | *num_clusters = num_chars; |
| 2135 | } |
| 2136 | |
| 2137 | if (num_chars > CACHING_THRESHOLD16) |
| 2138 | status = cairo_scaled_font_text_to_glyphs_internal_cached (scaled_font, |
| 2139 | x, y, |
| 2140 | utf8, |
| 2141 | *glyphs, |
| 2142 | clusters, |
| 2143 | num_chars); |
| 2144 | else |
| 2145 | status = cairo_scaled_font_text_to_glyphs_internal_uncached (scaled_font, |
| 2146 | x, y, |
| 2147 | utf8, |
| 2148 | *glyphs, |
| 2149 | clusters, |
| 2150 | num_chars); |
| 2151 | |
| 2152 | DONE: /* error that should be logged on scaled_font happened */ |
| 2153 | _cairo_scaled_font_thaw_cache (scaled_font); |
| 2154 | |
| 2155 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 2156 | *num_glyphs = 0; |
| 2157 | if (*glyphs != orig_glyphs) { |
| 2158 | cairo_glyph_free_moz_cairo_glyph_free (*glyphs); |
| 2159 | *glyphs = orig_glyphs; |
| 2160 | } |
| 2161 | |
| 2162 | if (clusters) { |
| 2163 | *num_clusters = 0; |
| 2164 | if (*clusters != orig_clusters) { |
| 2165 | cairo_text_cluster_free_moz_cairo_text_cluster_free (*clusters); |
| 2166 | *clusters = orig_clusters; |
| 2167 | } |
| 2168 | } |
| 2169 | } |
| 2170 | |
| 2171 | return _cairo_scaled_font_set_error (scaled_font, status); |
| 2172 | |
| 2173 | BAIL: /* error with input arguments */ |
| 2174 | |
| 2175 | if (num_glyphs) |
| 2176 | *num_glyphs = 0; |
| 2177 | |
| 2178 | if (num_clusters) |
| 2179 | *num_clusters = 0; |
| 2180 | |
| 2181 | return status; |
| 2182 | } |
| 2183 | |
| 2184 | static inline cairo_bool_t |
| 2185 | _range_contains_glyph (const cairo_box_t *extents, |
| 2186 | cairo_fixed_t left, |
| 2187 | cairo_fixed_t top, |
| 2188 | cairo_fixed_t right, |
| 2189 | cairo_fixed_t bottom) |
| 2190 | { |
| 2191 | if (left == right || top == bottom) |
| 2192 | return FALSE0; |
| 2193 | |
| 2194 | return right > extents->p1.x && |
| 2195 | left < extents->p2.x && |
| 2196 | bottom > extents->p1.y && |
| 2197 | top < extents->p2.y; |
| 2198 | } |
| 2199 | |
| 2200 | static cairo_status_t |
| 2201 | _cairo_scaled_font_single_glyph_device_extents (cairo_scaled_font_t *scaled_font, |
| 2202 | const cairo_glyph_t *glyph, |
| 2203 | cairo_rectangle_int_t *extents) |
| 2204 | { |
| 2205 | cairo_scaled_glyph_t *scaled_glyph; |
| 2206 | cairo_status_t status; |
| 2207 | |
| 2208 | _cairo_scaled_font_freeze_cache (scaled_font); |
| 2209 | status = _cairo_scaled_glyph_lookup (scaled_font, |
| 2210 | glyph->index, |
| 2211 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
| 2212 | NULL((void*)0), /* foreground color */ |
| 2213 | &scaled_glyph); |
| 2214 | if (likely (status == CAIRO_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_STATUS_SUCCESS), 1))) { |
| 2215 | cairo_bool_t round_xy = _cairo_font_options_get_round_glyph_positions (&scaled_font->options) == CAIRO_ROUND_GLYPH_POS_ON; |
| 2216 | cairo_box_t box; |
| 2217 | cairo_fixed_t v; |
| 2218 | |
| 2219 | if (round_xy) |
| 2220 | v = _cairo_fixed_from_int (_cairo_lround (glyph->x)); |
| 2221 | else |
| 2222 | v = _cairo_fixed_from_double (glyph->x); |
| 2223 | box.p1.x = v + scaled_glyph->bbox.p1.x; |
| 2224 | box.p2.x = v + scaled_glyph->bbox.p2.x; |
| 2225 | |
| 2226 | if (round_xy) |
| 2227 | v = _cairo_fixed_from_int (_cairo_lround (glyph->y)); |
| 2228 | else |
| 2229 | v = _cairo_fixed_from_double (glyph->y); |
| 2230 | box.p1.y = v + scaled_glyph->bbox.p1.y; |
| 2231 | box.p2.y = v + scaled_glyph->bbox.p2.y; |
| 2232 | |
| 2233 | _cairo_box_round_to_rectangle (&box, extents); |
| 2234 | } |
| 2235 | _cairo_scaled_font_thaw_cache (scaled_font); |
| 2236 | return status; |
| 2237 | } |
| 2238 | |
| 2239 | /* |
| 2240 | * Compute a device-space bounding box for the glyphs. |
| 2241 | */ |
| 2242 | cairo_status_t |
| 2243 | _cairo_scaled_font_glyph_device_extents (cairo_scaled_font_t *scaled_font, |
| 2244 | const cairo_glyph_t *glyphs, |
| 2245 | int num_glyphs, |
| 2246 | cairo_rectangle_int_t *extents, |
| 2247 | cairo_bool_t *overlap_out) |
| 2248 | { |
| 2249 | cairo_status_t status = CAIRO_STATUS_SUCCESS; |
| 2250 | cairo_box_t box = { { INT_MAX2147483647, INT_MAX2147483647 }, { INT_MIN(-2147483647 -1), INT_MIN(-2147483647 -1) }}; |
| 2251 | cairo_scaled_glyph_t *glyph_cache[64]; |
| 2252 | cairo_bool_t overlap = overlap_out ? FALSE0 : TRUE1; |
| 2253 | cairo_round_glyph_positions_t round_glyph_positions = _cairo_font_options_get_round_glyph_positions (&scaled_font->options); |
| 2254 | int i; |
| 2255 | |
| 2256 | if (unlikely (scaled_font->status)(__builtin_expect (!!(scaled_font->status), 0))) |
| 2257 | return scaled_font->status; |
| 2258 | |
| 2259 | if (num_glyphs == 1) { |
| 2260 | if (overlap_out) |
| 2261 | *overlap_out = FALSE0; |
| 2262 | return _cairo_scaled_font_single_glyph_device_extents (scaled_font, |
| 2263 | glyphs, |
| 2264 | extents); |
| 2265 | } |
| 2266 | |
| 2267 | _cairo_scaled_font_freeze_cache (scaled_font); |
| 2268 | |
| 2269 | memset (glyph_cache, 0, sizeof (glyph_cache)); |
| 2270 | |
| 2271 | for (i = 0; i < num_glyphs; i++) { |
| 2272 | cairo_scaled_glyph_t *scaled_glyph; |
| 2273 | cairo_fixed_t x, y, x1, y1, x2, y2; |
| 2274 | int cache_index = glyphs[i].index % ARRAY_LENGTH (glyph_cache)((int) (sizeof (glyph_cache) / sizeof (glyph_cache[0]))); |
| 2275 | |
| 2276 | scaled_glyph = glyph_cache[cache_index]; |
| 2277 | if (scaled_glyph == NULL((void*)0) || |
| 2278 | _cairo_scaled_glyph_index (scaled_glyph)((unsigned long)((scaled_glyph)->hash_entry.hash & 0xffffff )) != glyphs[i].index) |
| 2279 | { |
| 2280 | status = _cairo_scaled_glyph_lookup (scaled_font, |
| 2281 | glyphs[i].index, |
| 2282 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
| 2283 | NULL((void*)0), /* foreground color */ |
| 2284 | &scaled_glyph); |
| 2285 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2286 | break; |
| 2287 | |
| 2288 | glyph_cache[cache_index] = scaled_glyph; |
| 2289 | } |
| 2290 | |
| 2291 | if (round_glyph_positions == CAIRO_ROUND_GLYPH_POS_ON) |
| 2292 | x = _cairo_fixed_from_int (_cairo_lround (glyphs[i].x)); |
| 2293 | else |
| 2294 | x = _cairo_fixed_from_double (glyphs[i].x); |
| 2295 | x1 = x + scaled_glyph->bbox.p1.x; |
| 2296 | x2 = x + scaled_glyph->bbox.p2.x; |
| 2297 | |
| 2298 | if (round_glyph_positions == CAIRO_ROUND_GLYPH_POS_ON) |
| 2299 | y = _cairo_fixed_from_int (_cairo_lround (glyphs[i].y)); |
| 2300 | else |
| 2301 | y = _cairo_fixed_from_double (glyphs[i].y); |
| 2302 | y1 = y + scaled_glyph->bbox.p1.y; |
| 2303 | y2 = y + scaled_glyph->bbox.p2.y; |
| 2304 | |
| 2305 | if (overlap == FALSE0) |
| 2306 | overlap = _range_contains_glyph (&box, x1, y1, x2, y2); |
| 2307 | |
| 2308 | if (x1 < box.p1.x) box.p1.x = x1; |
| 2309 | if (x2 > box.p2.x) box.p2.x = x2; |
| 2310 | if (y1 < box.p1.y) box.p1.y = y1; |
| 2311 | if (y2 > box.p2.y) box.p2.y = y2; |
| 2312 | } |
| 2313 | |
| 2314 | _cairo_scaled_font_thaw_cache (scaled_font); |
| 2315 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2316 | return _cairo_scaled_font_set_error (scaled_font, status); |
| 2317 | |
| 2318 | if (box.p1.x < box.p2.x) { |
| 2319 | _cairo_box_round_to_rectangle (&box, extents); |
| 2320 | } else { |
| 2321 | extents->x = extents->y = 0; |
| 2322 | extents->width = extents->height = 0; |
| 2323 | } |
| 2324 | |
| 2325 | if (overlap_out != NULL((void*)0)) |
| 2326 | *overlap_out = overlap; |
| 2327 | |
| 2328 | return CAIRO_STATUS_SUCCESS; |
| 2329 | } |
| 2330 | |
| 2331 | cairo_bool_t |
| 2332 | _cairo_scaled_font_glyph_approximate_extents (cairo_scaled_font_t *scaled_font, |
| 2333 | const cairo_glyph_t *glyphs, |
| 2334 | int num_glyphs, |
| 2335 | cairo_rectangle_int_t *extents) |
| 2336 | { |
| 2337 | double x0, x1, y0, y1, pad; |
| 2338 | int i; |
| 2339 | |
| 2340 | /* If any of the factors are suspect (i.e. the font is broken), bail */ |
| 2341 | if (scaled_font->fs_extents.max_x_advance == 0 || |
| 2342 | scaled_font->fs_extents.height == 0 || |
| 2343 | scaled_font->max_scale == 0) |
| 2344 | { |
| 2345 | return FALSE0; |
| 2346 | } |
| 2347 | |
| 2348 | assert (num_glyphs)((void) sizeof ((num_glyphs) ? 1 : 0), __extension__ ({ if (num_glyphs ) ; else __assert_fail ("num_glyphs", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 2348, __extension__ __PRETTY_FUNCTION__); })); |
| 2349 | |
| 2350 | x0 = x1 = glyphs[0].x; |
| 2351 | y0 = y1 = glyphs[0].y; |
| 2352 | for (i = 1; i < num_glyphs; i++) { |
| 2353 | double g; |
| 2354 | |
| 2355 | g = glyphs[i].x; |
| 2356 | if (g < x0) x0 = g; |
| 2357 | if (g > x1) x1 = g; |
| 2358 | |
| 2359 | g = glyphs[i].y; |
| 2360 | if (g < y0) y0 = g; |
| 2361 | if (g > y1) y1 = g; |
| 2362 | } |
| 2363 | |
| 2364 | pad = MAX(scaled_font->fs_extents.max_x_advance,((scaled_font->fs_extents.max_x_advance) > (scaled_font ->fs_extents.height) ? (scaled_font->fs_extents.max_x_advance ) : (scaled_font->fs_extents.height)) |
| 2365 | scaled_font->fs_extents.height)((scaled_font->fs_extents.max_x_advance) > (scaled_font ->fs_extents.height) ? (scaled_font->fs_extents.max_x_advance ) : (scaled_font->fs_extents.height)); |
| 2366 | pad *= scaled_font->max_scale; |
| 2367 | |
| 2368 | extents->x = floor (x0 - pad); |
| 2369 | extents->width = ceil (x1 + pad) - extents->x; |
| 2370 | extents->y = floor (y0 - pad); |
| 2371 | extents->height = ceil (y1 + pad) - extents->y; |
| 2372 | return TRUE1; |
| 2373 | } |
| 2374 | |
| 2375 | /* Add a single-device-unit rectangle to a path. */ |
| 2376 | static cairo_status_t |
| 2377 | _add_unit_rectangle_to_path (cairo_path_fixed_t *path, |
| 2378 | cairo_fixed_t x, |
| 2379 | cairo_fixed_t y) |
| 2380 | { |
| 2381 | cairo_status_t status; |
| 2382 | |
| 2383 | status = _cairo_path_fixed_move_to (path, x, y); |
| 2384 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2385 | return status; |
| 2386 | |
| 2387 | status = _cairo_path_fixed_rel_line_to (path, |
| 2388 | _cairo_fixed_from_int (1), |
| 2389 | _cairo_fixed_from_int (0)); |
| 2390 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2391 | return status; |
| 2392 | |
| 2393 | status = _cairo_path_fixed_rel_line_to (path, |
| 2394 | _cairo_fixed_from_int (0), |
| 2395 | _cairo_fixed_from_int (1)); |
| 2396 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2397 | return status; |
| 2398 | |
| 2399 | status = _cairo_path_fixed_rel_line_to (path, |
| 2400 | _cairo_fixed_from_int (-1), |
| 2401 | _cairo_fixed_from_int (0)); |
| 2402 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2403 | return status; |
| 2404 | |
| 2405 | return _cairo_path_fixed_close_path (path); |
| 2406 | } |
| 2407 | |
| 2408 | /** |
| 2409 | * _trace_mask_to_path: |
| 2410 | * @bitmap: An alpha mask (either %CAIRO_FORMAT_A1 or %CAIRO_FORMAT_A8) |
| 2411 | * @path: An initialized path to hold the result |
| 2412 | * |
| 2413 | * Given a mask surface, (an alpha image), fill out the provided path |
| 2414 | * so that when filled it would result in something that approximates |
| 2415 | * the mask. |
| 2416 | * |
| 2417 | * Note: The current tracing code here is extremely primitive. It |
| 2418 | * operates only on an A1 surface, (converting an A8 surface to A1 if |
| 2419 | * necessary), and performs the tracing by drawing a little square |
| 2420 | * around each pixel that is on in the mask. We do not pretend that |
| 2421 | * this is a high-quality result. But we are leaving it up to someone |
| 2422 | * who cares enough about getting a better result to implement |
| 2423 | * something more sophisticated. |
| 2424 | **/ |
| 2425 | static cairo_status_t |
| 2426 | _trace_mask_to_path (cairo_image_surface_t *mask, |
| 2427 | cairo_path_fixed_t *path, |
| 2428 | double tx, double ty) |
| 2429 | { |
| 2430 | const uint8_t *row; |
| 2431 | int rows, cols, bytes_per_row; |
| 2432 | int x, y, bit; |
| 2433 | double xoff, yoff; |
| 2434 | cairo_fixed_t x0, y0; |
| 2435 | cairo_fixed_t px, py; |
| 2436 | cairo_status_t status; |
| 2437 | |
| 2438 | mask = _cairo_image_surface_coerce_to_format (mask, CAIRO_FORMAT_A1); |
| 2439 | status = mask->base.status; |
| 2440 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2441 | return status; |
| 2442 | |
| 2443 | cairo_surface_get_device_offset_moz_cairo_surface_get_device_offset (&mask->base, &xoff, &yoff); |
| 2444 | x0 = _cairo_fixed_from_double (tx - xoff); |
| 2445 | y0 = _cairo_fixed_from_double (ty - yoff); |
| 2446 | |
| 2447 | bytes_per_row = (mask->width + 7) / 8; |
| 2448 | row = mask->data; |
| 2449 | for (y = 0, rows = mask->height; rows--; row += mask->stride, y++) { |
| 2450 | const uint8_t *byte_ptr = row; |
| 2451 | x = 0; |
| 2452 | py = _cairo_fixed_from_int (y); |
| 2453 | for (cols = bytes_per_row; cols--; ) { |
| 2454 | uint8_t byte = *byte_ptr++; |
| 2455 | if (byte == 0) { |
| 2456 | x += 8; |
| 2457 | continue; |
| 2458 | } |
| 2459 | |
| 2460 | byte = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (byte)((((byte) * 0x0802LU & 0x22110LU) | ((byte) * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16); |
| 2461 | for (bit = 1 << 7; bit && x < mask->width; bit >>= 1, x++) { |
| 2462 | if (byte & bit) { |
| 2463 | px = _cairo_fixed_from_int (x); |
| 2464 | status = _add_unit_rectangle_to_path (path, |
| 2465 | px + x0, |
| 2466 | py + y0); |
| 2467 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2468 | goto BAIL; |
| 2469 | } |
| 2470 | } |
| 2471 | } |
| 2472 | } |
| 2473 | |
| 2474 | BAIL: |
| 2475 | cairo_surface_destroy_moz_cairo_surface_destroy (&mask->base); |
| 2476 | |
| 2477 | return status; |
| 2478 | } |
| 2479 | |
| 2480 | cairo_status_t |
| 2481 | _cairo_scaled_font_glyph_path (cairo_scaled_font_t *scaled_font, |
| 2482 | const cairo_glyph_t *glyphs, |
| 2483 | int num_glyphs, |
| 2484 | cairo_path_fixed_t *path) |
| 2485 | { |
| 2486 | cairo_int_status_t status; |
| 2487 | int i; |
| 2488 | |
| 2489 | status = scaled_font->status; |
| 2490 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2491 | return status; |
| 2492 | |
| 2493 | _cairo_scaled_font_freeze_cache (scaled_font); |
| 2494 | for (i = 0; i < num_glyphs; i++) { |
| 2495 | cairo_scaled_glyph_t *scaled_glyph; |
| 2496 | |
| 2497 | status = _cairo_scaled_glyph_lookup (scaled_font, |
| 2498 | glyphs[i].index, |
| 2499 | CAIRO_SCALED_GLYPH_INFO_PATH, |
| 2500 | NULL((void*)0), /* foreground color */ |
| 2501 | &scaled_glyph); |
| 2502 | if (status == CAIRO_INT_STATUS_SUCCESS) { |
| 2503 | status = _cairo_path_fixed_append (path, |
| 2504 | scaled_glyph->path, |
| 2505 | _cairo_fixed_from_double (glyphs[i].x), |
| 2506 | _cairo_fixed_from_double (glyphs[i].y)); |
| 2507 | |
| 2508 | } else if (status == CAIRO_INT_STATUS_UNSUPPORTED) { |
| 2509 | /* If the font is incapable of providing a path, then we'll |
| 2510 | * have to trace our own from a surface. |
| 2511 | */ |
| 2512 | status = _cairo_scaled_glyph_lookup (scaled_font, |
| 2513 | glyphs[i].index, |
| 2514 | CAIRO_SCALED_GLYPH_INFO_SURFACE, |
| 2515 | NULL((void*)0), /* foreground color */ |
| 2516 | &scaled_glyph); |
| 2517 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2518 | goto BAIL; |
| 2519 | |
| 2520 | status = _trace_mask_to_path (scaled_glyph->surface, path, |
| 2521 | glyphs[i].x, glyphs[i].y); |
| 2522 | } |
| 2523 | |
| 2524 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2525 | goto BAIL; |
| 2526 | } |
| 2527 | BAIL: |
| 2528 | _cairo_scaled_font_thaw_cache (scaled_font); |
| 2529 | |
| 2530 | return _cairo_scaled_font_set_error (scaled_font, status); |
| 2531 | } |
| 2532 | |
| 2533 | /** |
| 2534 | * _cairo_scaled_glyph_set_metrics: |
| 2535 | * @scaled_glyph: a #cairo_scaled_glyph_t |
| 2536 | * @scaled_font: a #cairo_scaled_font_t |
| 2537 | * @fs_metrics: a #cairo_text_extents_t in font space |
| 2538 | * |
| 2539 | * _cairo_scaled_glyph_set_metrics() stores user space metrics |
| 2540 | * for the specified glyph given font space metrics. It is |
| 2541 | * called by the font backend when initializing a glyph with |
| 2542 | * %CAIRO_SCALED_GLYPH_INFO_METRICS. |
| 2543 | **/ |
| 2544 | void |
| 2545 | _cairo_scaled_glyph_set_metrics (cairo_scaled_glyph_t *scaled_glyph, |
| 2546 | cairo_scaled_font_t *scaled_font, |
| 2547 | cairo_text_extents_t *fs_metrics) |
| 2548 | { |
| 2549 | cairo_bool_t first = TRUE1; |
| 2550 | double hm, wm; |
| 2551 | double min_user_x = 0.0, max_user_x = 0.0, min_user_y = 0.0, max_user_y = 0.0; |
| 2552 | double min_device_x = 0.0, max_device_x = 0.0, min_device_y = 0.0, max_device_y = 0.0; |
| 2553 | double device_x_advance, device_y_advance; |
| 2554 | |
| 2555 | scaled_glyph->fs_metrics = *fs_metrics; |
| 2556 | |
| 2557 | for (hm = 0.0; hm <= 1.0; hm += 1.0) |
| 2558 | for (wm = 0.0; wm <= 1.0; wm += 1.0) { |
| 2559 | double x, y; |
| 2560 | |
| 2561 | /* Transform this corner to user space */ |
| 2562 | x = fs_metrics->x_bearing + fs_metrics->width * wm; |
| 2563 | y = fs_metrics->y_bearing + fs_metrics->height * hm; |
| 2564 | cairo_matrix_transform_point_moz_cairo_matrix_transform_point (&scaled_font->font_matrix, |
| 2565 | &x, &y); |
| 2566 | if (first) { |
| 2567 | min_user_x = max_user_x = x; |
| 2568 | min_user_y = max_user_y = y; |
| 2569 | } else { |
| 2570 | if (x < min_user_x) min_user_x = x; |
| 2571 | if (x > max_user_x) max_user_x = x; |
| 2572 | if (y < min_user_y) min_user_y = y; |
| 2573 | if (y > max_user_y) max_user_y = y; |
| 2574 | } |
| 2575 | |
| 2576 | /* Transform this corner to device space from glyph origin */ |
| 2577 | x = fs_metrics->x_bearing + fs_metrics->width * wm; |
| 2578 | y = fs_metrics->y_bearing + fs_metrics->height * hm; |
| 2579 | cairo_matrix_transform_distance_moz_cairo_matrix_transform_distance (&scaled_font->scale, |
| 2580 | &x, &y); |
| 2581 | |
| 2582 | if (first) { |
| 2583 | min_device_x = max_device_x = x; |
| 2584 | min_device_y = max_device_y = y; |
| 2585 | } else { |
| 2586 | if (x < min_device_x) min_device_x = x; |
| 2587 | if (x > max_device_x) max_device_x = x; |
| 2588 | if (y < min_device_y) min_device_y = y; |
| 2589 | if (y > max_device_y) max_device_y = y; |
| 2590 | } |
| 2591 | first = FALSE0; |
| 2592 | } |
| 2593 | scaled_glyph->metrics.x_bearing = min_user_x; |
| 2594 | scaled_glyph->metrics.y_bearing = min_user_y; |
| 2595 | scaled_glyph->metrics.width = max_user_x - min_user_x; |
| 2596 | scaled_glyph->metrics.height = max_user_y - min_user_y; |
| 2597 | |
| 2598 | scaled_glyph->metrics.x_advance = fs_metrics->x_advance; |
| 2599 | scaled_glyph->metrics.y_advance = fs_metrics->y_advance; |
| 2600 | cairo_matrix_transform_distance_moz_cairo_matrix_transform_distance (&scaled_font->font_matrix, |
| 2601 | &scaled_glyph->metrics.x_advance, |
| 2602 | &scaled_glyph->metrics.y_advance); |
| 2603 | |
| 2604 | device_x_advance = fs_metrics->x_advance; |
| 2605 | device_y_advance = fs_metrics->y_advance; |
| 2606 | cairo_matrix_transform_distance_moz_cairo_matrix_transform_distance (&scaled_font->scale, |
| 2607 | &device_x_advance, |
| 2608 | &device_y_advance); |
| 2609 | |
| 2610 | scaled_glyph->bbox.p1.x = _cairo_fixed_from_double (min_device_x); |
| 2611 | scaled_glyph->bbox.p1.y = _cairo_fixed_from_double (min_device_y); |
| 2612 | scaled_glyph->bbox.p2.x = _cairo_fixed_from_double (max_device_x); |
| 2613 | scaled_glyph->bbox.p2.y = _cairo_fixed_from_double (max_device_y); |
| 2614 | |
| 2615 | scaled_glyph->x_advance = _cairo_lround (device_x_advance); |
| 2616 | scaled_glyph->y_advance = _cairo_lround (device_y_advance); |
| 2617 | |
| 2618 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_METRICS; |
| 2619 | } |
| 2620 | |
| 2621 | void |
| 2622 | _cairo_scaled_glyph_set_surface (cairo_scaled_glyph_t *scaled_glyph, |
| 2623 | cairo_scaled_font_t *scaled_font, |
| 2624 | cairo_image_surface_t *surface) |
| 2625 | { |
| 2626 | if (scaled_glyph->surface != NULL((void*)0)) |
| 2627 | cairo_surface_destroy_moz_cairo_surface_destroy (&scaled_glyph->surface->base); |
| 2628 | |
| 2629 | /* sanity check the backend glyph contents */ |
| 2630 | _cairo_debug_check_image_surface_is_defined (&surface->base); |
| 2631 | scaled_glyph->surface = surface; |
| 2632 | |
| 2633 | if (surface != NULL((void*)0)) |
| 2634 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_SURFACE; |
| 2635 | else |
| 2636 | scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_SURFACE; |
| 2637 | } |
| 2638 | |
| 2639 | void |
| 2640 | _cairo_scaled_glyph_set_path (cairo_scaled_glyph_t *scaled_glyph, |
| 2641 | cairo_scaled_font_t *scaled_font, |
| 2642 | cairo_path_fixed_t *path) |
| 2643 | { |
| 2644 | if (scaled_glyph->path != NULL((void*)0)) |
| 2645 | _cairo_path_fixed_destroy (scaled_glyph->path); |
| 2646 | |
| 2647 | scaled_glyph->path = path; |
| 2648 | |
| 2649 | if (path != NULL((void*)0)) |
| 2650 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_PATH; |
| 2651 | else |
| 2652 | scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_PATH; |
| 2653 | } |
| 2654 | |
| 2655 | /** |
| 2656 | * _cairo_scaled_glyph_set_recording_surface: |
| 2657 | * @scaled_glyph: a #cairo_scaled_glyph_t |
| 2658 | * @scaled_font: a #cairo_scaled_font_t |
| 2659 | * @recording_surface: The recording surface |
| 2660 | * @foreground_color: The foreground color that was used to record the |
| 2661 | * glyph, or NULL if foreground color not required. |
| 2662 | * |
| 2663 | * Sets the surface that was used to record the glyph. |
| 2664 | **/ |
| 2665 | void |
| 2666 | _cairo_scaled_glyph_set_recording_surface (cairo_scaled_glyph_t *scaled_glyph, |
| 2667 | cairo_scaled_font_t *scaled_font, |
| 2668 | cairo_surface_t *recording_surface, |
| 2669 | const cairo_color_t * foreground_color) |
| 2670 | { |
| 2671 | if (scaled_glyph->recording_surface != NULL((void*)0)) { |
| 2672 | cairo_surface_finish_moz_cairo_surface_finish (scaled_glyph->recording_surface); |
| 2673 | cairo_surface_destroy_moz_cairo_surface_destroy (scaled_glyph->recording_surface); |
| 2674 | } |
| 2675 | |
| 2676 | scaled_glyph->recording_surface = recording_surface; |
| 2677 | scaled_glyph->recording_uses_foreground_color = foreground_color != NULL((void*)0); |
| 2678 | if (foreground_color) |
| 2679 | scaled_glyph->foreground_color = *foreground_color; |
| 2680 | |
| 2681 | if (recording_surface != NULL((void*)0)) |
| 2682 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE; |
| 2683 | else |
| 2684 | scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE; |
| 2685 | } |
| 2686 | |
| 2687 | /** |
| 2688 | * _cairo_scaled_glyph_set_color_surface: |
| 2689 | * @scaled_glyph: a #cairo_scaled_glyph_t |
| 2690 | * @scaled_font: a #cairo_scaled_font_t |
| 2691 | * @surface: The image surface |
| 2692 | * @foreground_marker_color: The foreground color that was used to |
| 2693 | * substitute the foreground_marker, or NULL if foreground_marker not |
| 2694 | * used when rendering the surface color. |
| 2695 | * |
| 2696 | * Sets the color surface of the glyph. |
| 2697 | **/ |
| 2698 | void |
| 2699 | _cairo_scaled_glyph_set_color_surface (cairo_scaled_glyph_t *scaled_glyph, |
| 2700 | cairo_scaled_font_t *scaled_font, |
| 2701 | cairo_image_surface_t *surface, |
| 2702 | const cairo_color_t *foreground_marker_color) |
| 2703 | { |
| 2704 | if (scaled_glyph->color_surface != NULL((void*)0)) |
| 2705 | cairo_surface_destroy_moz_cairo_surface_destroy (&scaled_glyph->color_surface->base); |
| 2706 | |
| 2707 | /* sanity check the backend glyph contents */ |
| 2708 | _cairo_debug_check_image_surface_is_defined (&surface->base); |
| 2709 | scaled_glyph->color_surface = surface; |
| 2710 | scaled_glyph->recording_uses_foreground_marker = foreground_marker_color != NULL((void*)0); |
| 2711 | if (foreground_marker_color) |
| 2712 | scaled_glyph->foreground_color = *foreground_marker_color; |
| 2713 | |
| 2714 | if (surface != NULL((void*)0)) |
| 2715 | scaled_glyph->has_info |= CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE; |
| 2716 | else |
| 2717 | scaled_glyph->has_info &= ~CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE; |
| 2718 | } |
| 2719 | |
| 2720 | /* _cairo_hash_table_random_entry () predicate. To avoid race conditions, |
| 2721 | * the font is locked when tested. The font is unlocked in |
| 2722 | * _cairo_scaled_glyph_page_pluck. */ |
| 2723 | static cairo_bool_t |
| 2724 | _cairo_scaled_glyph_page_can_remove (const void *closure) |
| 2725 | { |
| 2726 | const cairo_scaled_glyph_page_t *page = closure; |
| 2727 | cairo_scaled_font_t *scaled_font; |
| 2728 | |
| 2729 | scaled_font = page->scaled_font; |
| 2730 | |
| 2731 | if (!CAIRO_MUTEX_TRY_LOCK (scaled_font->mutex)(pthread_mutex_trylock (&(scaled_font->mutex)) == 0)) |
| 2732 | return FALSE0; |
| 2733 | |
| 2734 | if (scaled_font->cache_frozen != 0) { |
| 2735 | CAIRO_MUTEX_UNLOCK (scaled_font->mutex)pthread_mutex_unlock (&(scaled_font->mutex)); |
| 2736 | return FALSE0; |
| 2737 | } |
| 2738 | |
| 2739 | return TRUE1; |
| 2740 | } |
| 2741 | |
| 2742 | static cairo_status_t |
| 2743 | _cairo_scaled_font_allocate_glyph (cairo_scaled_font_t *scaled_font, |
| 2744 | cairo_scaled_glyph_t **scaled_glyph) |
| 2745 | { |
| 2746 | cairo_scaled_glyph_page_t *page; |
| 2747 | cairo_status_t status; |
| 2748 | |
| 2749 | assert (scaled_font->cache_frozen)((void) sizeof ((scaled_font->cache_frozen) ? 1 : 0), __extension__ ({ if (scaled_font->cache_frozen) ; else __assert_fail ("scaled_font->cache_frozen" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 2749, __extension__ __PRETTY_FUNCTION__); })); |
| 2750 | |
| 2751 | /* only the first page in the list may contain available slots */ |
| 2752 | if (! cairo_list_is_empty (&scaled_font->glyph_pages)) { |
| 2753 | page = cairo_list_last_entry (&scaled_font->glyph_pages,({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link ) *mptr__ = ((&scaled_font->glyph_pages)->prev); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t , link)); }) |
| 2754 | cairo_scaled_glyph_page_t,({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link ) *mptr__ = ((&scaled_font->glyph_pages)->prev); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t , link)); }) |
| 2755 | link)({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link ) *mptr__ = ((&scaled_font->glyph_pages)->prev); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t , link)); }); |
| 2756 | if (page->num_glyphs < CAIRO_SCALED_GLYPH_PAGE_SIZE32) { |
| 2757 | *scaled_glyph = &page->glyphs[page->num_glyphs++]; |
| 2758 | return CAIRO_STATUS_SUCCESS; |
| 2759 | } |
| 2760 | } |
| 2761 | |
| 2762 | page = _cairo_malloc (sizeof (cairo_scaled_glyph_page_t))((sizeof (cairo_scaled_glyph_page_t)) != 0 ? malloc(sizeof (cairo_scaled_glyph_page_t )) : ((void*)0)); |
| 2763 | if (unlikely (page == NULL)(__builtin_expect (!!(page == ((void*)0)), 0))) |
| 2764 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2765 | |
| 2766 | page->cache_entry.hash = (uintptr_t) scaled_font; |
| 2767 | page->scaled_font = scaled_font; |
| 2768 | page->cache_entry.size = 1; /* XXX occupancy weighting? */ |
| 2769 | page->num_glyphs = 0; |
| 2770 | |
| 2771 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex)pthread_mutex_lock (&(_cairo_scaled_glyph_page_cache_mutex )); |
| 2772 | if (scaled_font->global_cache_frozen == FALSE0) { |
| 2773 | if (unlikely (cairo_scaled_glyph_page_cache.hash_table == NULL)(__builtin_expect (!!(cairo_scaled_glyph_page_cache.hash_table == ((void*)0)), 0))) { |
| 2774 | status = _cairo_cache_init (&cairo_scaled_glyph_page_cache, |
| 2775 | NULL((void*)0), |
| 2776 | _cairo_scaled_glyph_page_can_remove, |
| 2777 | _cairo_scaled_glyph_page_pluck, |
| 2778 | MAX_GLYPH_PAGES_CACHED512); |
| 2779 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 2780 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex)pthread_mutex_unlock (&(_cairo_scaled_glyph_page_cache_mutex )); |
| 2781 | free (page); |
| 2782 | return status; |
| 2783 | } |
| 2784 | } |
| 2785 | |
| 2786 | _cairo_cache_freeze (&cairo_scaled_glyph_page_cache); |
| 2787 | scaled_font->global_cache_frozen = TRUE1; |
| 2788 | } |
| 2789 | |
| 2790 | status = _cairo_cache_insert (&cairo_scaled_glyph_page_cache, |
| 2791 | &page->cache_entry); |
| 2792 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex)pthread_mutex_unlock (&(_cairo_scaled_glyph_page_cache_mutex )); |
| 2793 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 2794 | free (page); |
| 2795 | return status; |
| 2796 | } |
| 2797 | |
| 2798 | cairo_list_add_tail (&page->link, &scaled_font->glyph_pages); |
| 2799 | |
| 2800 | *scaled_glyph = &page->glyphs[page->num_glyphs++]; |
| 2801 | return CAIRO_STATUS_SUCCESS; |
| 2802 | } |
| 2803 | |
| 2804 | static void |
| 2805 | _cairo_scaled_font_free_last_glyph (cairo_scaled_font_t *scaled_font, |
| 2806 | cairo_scaled_glyph_t *scaled_glyph) |
| 2807 | { |
| 2808 | cairo_scaled_glyph_page_t *page; |
| 2809 | |
| 2810 | assert (scaled_font->cache_frozen)((void) sizeof ((scaled_font->cache_frozen) ? 1 : 0), __extension__ ({ if (scaled_font->cache_frozen) ; else __assert_fail ("scaled_font->cache_frozen" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 2810, __extension__ __PRETTY_FUNCTION__); })); |
| 2811 | assert (! cairo_list_is_empty (&scaled_font->glyph_pages))((void) sizeof ((! cairo_list_is_empty (&scaled_font-> glyph_pages)) ? 1 : 0), __extension__ ({ if (! cairo_list_is_empty (&scaled_font->glyph_pages)) ; else __assert_fail ("! cairo_list_is_empty (&scaled_font->glyph_pages)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 2811, __extension__ __PRETTY_FUNCTION__); })); |
| 2812 | page = cairo_list_last_entry (&scaled_font->glyph_pages,({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link ) *mptr__ = ((&scaled_font->glyph_pages)->prev); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t , link)); }) |
| 2813 | cairo_scaled_glyph_page_t,({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link ) *mptr__ = ((&scaled_font->glyph_pages)->prev); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t , link)); }) |
| 2814 | link)({ const __typeof__ (((cairo_scaled_glyph_page_t *) 0)->link ) *mptr__ = ((&scaled_font->glyph_pages)->prev); (cairo_scaled_glyph_page_t *) ((char *) mptr__ - __builtin_offsetof(cairo_scaled_glyph_page_t , link)); }); |
| 2815 | assert (scaled_glyph == &page->glyphs[page->num_glyphs-1])((void) sizeof ((scaled_glyph == &page->glyphs[page-> num_glyphs-1]) ? 1 : 0), __extension__ ({ if (scaled_glyph == &page->glyphs[page->num_glyphs-1]) ; else __assert_fail ("scaled_glyph == &page->glyphs[page->num_glyphs-1]" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 2815, __extension__ __PRETTY_FUNCTION__); })); |
| 2816 | |
| 2817 | _cairo_scaled_glyph_fini (scaled_font, scaled_glyph); |
| 2818 | |
| 2819 | if (--page->num_glyphs == 0) { |
| 2820 | _cairo_scaled_font_thaw_cache (scaled_font); |
| 2821 | CAIRO_MUTEX_LOCK (scaled_font->mutex)pthread_mutex_lock (&(scaled_font->mutex)); |
| 2822 | |
| 2823 | CAIRO_MUTEX_LOCK (_cairo_scaled_glyph_page_cache_mutex)pthread_mutex_lock (&(_cairo_scaled_glyph_page_cache_mutex )); |
| 2824 | /* Temporarily disconnect callback to avoid recursive locking */ |
| 2825 | cairo_scaled_glyph_page_cache.entry_destroy = NULL((void*)0); |
| 2826 | _cairo_cache_remove (&cairo_scaled_glyph_page_cache, |
| 2827 | &page->cache_entry); |
| 2828 | _cairo_scaled_glyph_page_destroy (scaled_font, page); |
| 2829 | cairo_scaled_glyph_page_cache.entry_destroy = _cairo_scaled_glyph_page_pluck; |
| 2830 | CAIRO_MUTEX_UNLOCK (_cairo_scaled_glyph_page_cache_mutex)pthread_mutex_unlock (&(_cairo_scaled_glyph_page_cache_mutex )); |
| 2831 | |
| 2832 | CAIRO_MUTEX_UNLOCK (scaled_font->mutex)pthread_mutex_unlock (&(scaled_font->mutex)); |
| 2833 | _cairo_scaled_font_freeze_cache (scaled_font); |
| 2834 | } |
| 2835 | } |
| 2836 | |
| 2837 | /** |
| 2838 | * _cairo_scaled_glyph_lookup: |
| 2839 | * @scaled_font: a #cairo_scaled_font_t |
| 2840 | * @index: the glyph to create |
| 2841 | * @info: a #cairo_scaled_glyph_info_t marking which portions of |
| 2842 | * the glyph should be filled in. |
| 2843 | * @foreground_color - foreground color to use when rendering color |
| 2844 | * fonts. Use NULL if not requesting |
| 2845 | * CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE or |
| 2846 | * CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE, or foreground color is |
| 2847 | * unknown. |
| 2848 | * @scaled_glyph_ret: a #cairo_scaled_glyph_t where the glyph |
| 2849 | * is returned. |
| 2850 | * |
| 2851 | * If the desired info is not available, (for example, when trying to |
| 2852 | * get INFO_PATH with a bitmapped font), this function will return |
| 2853 | * %CAIRO_INT_STATUS_UNSUPPORTED. |
| 2854 | * |
| 2855 | * Note: This function must be called with the scaled font frozen, and it must |
| 2856 | * remain frozen for as long as the @scaled_glyph_ret is alive. (If the scaled |
| 2857 | * font was not frozen, then there is no guarantee that the glyph would not be |
| 2858 | * evicted before you tried to access it.) See |
| 2859 | * _cairo_scaled_font_freeze_cache() and _cairo_scaled_font_thaw_cache(). |
| 2860 | * |
| 2861 | * Returns: a glyph with the requested portions filled in. Glyph |
| 2862 | * lookup is cached and glyph will be automatically freed along |
| 2863 | * with the scaled_font so no explicit free is required. |
| 2864 | * @info can be one or more of: |
| 2865 | * %CAIRO_SCALED_GLYPH_INFO_METRICS - glyph metrics and bounding box |
| 2866 | * %CAIRO_SCALED_GLYPH_INFO_SURFACE - surface holding glyph image |
| 2867 | * %CAIRO_SCALED_GLYPH_INFO_PATH - path holding glyph outline in device space |
| 2868 | * %CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE - surface holding recording of glyph |
| 2869 | * %CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE - surface holding color glyph image |
| 2870 | **/ |
| 2871 | cairo_int_status_t |
| 2872 | _cairo_scaled_glyph_lookup (cairo_scaled_font_t *scaled_font, |
| 2873 | unsigned long index, |
| 2874 | cairo_scaled_glyph_info_t info, |
| 2875 | const cairo_color_t *foreground_color, |
| 2876 | cairo_scaled_glyph_t **scaled_glyph_ret) |
| 2877 | { |
| 2878 | cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS; |
| 2879 | cairo_scaled_glyph_t *scaled_glyph; |
| 2880 | cairo_scaled_glyph_info_t need_info; |
| 2881 | cairo_hash_entry_t key; |
| 2882 | |
| 2883 | *scaled_glyph_ret = NULL((void*)0); |
| 2884 | |
| 2885 | if (unlikely (scaled_font->status)(__builtin_expect (!!(scaled_font->status), 0))) |
| 2886 | return scaled_font->status; |
| 2887 | |
| 2888 | assert (CAIRO_MUTEX_IS_LOCKED(scaled_font->mutex))((void) sizeof ((1) ? 1 : 0), __extension__ ({ if (1) ; else __assert_fail ("CAIRO_MUTEX_IS_LOCKED(scaled_font->mutex)", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 2888, __extension__ __PRETTY_FUNCTION__); })); |
| 2889 | assert (scaled_font->cache_frozen)((void) sizeof ((scaled_font->cache_frozen) ? 1 : 0), __extension__ ({ if (scaled_font->cache_frozen) ; else __assert_fail ("scaled_font->cache_frozen" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-scaled-font.c" , 2889, __extension__ __PRETTY_FUNCTION__); })); |
| 2890 | |
| 2891 | if (CAIRO_INJECT_FAULT ()0) |
| 2892 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 2893 | |
| 2894 | if (foreground_color == NULL((void*)0)) |
| 2895 | foreground_color = CAIRO_COLOR_BLACK_cairo_stock_color (CAIRO_STOCK_BLACK); |
| 2896 | |
| 2897 | /* |
| 2898 | * Check cache for glyph |
| 2899 | */ |
| 2900 | key.hash = index; |
| 2901 | scaled_glyph = _cairo_hash_table_lookup (scaled_font->glyphs, &key); |
| 2902 | if (scaled_glyph == NULL((void*)0)) { |
| 2903 | status = _cairo_scaled_font_allocate_glyph (scaled_font, &scaled_glyph); |
| 2904 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2905 | goto err; |
| 2906 | |
| 2907 | memset (scaled_glyph, 0, sizeof (cairo_scaled_glyph_t)); |
| 2908 | _cairo_scaled_glyph_set_index (scaled_glyph, index)((scaled_glyph)->hash_entry.hash = (index)); |
| 2909 | cairo_list_init (&scaled_glyph->dev_privates); |
| 2910 | |
| 2911 | /* ask backend to initialize metrics and shape fields */ |
| 2912 | status = |
| 2913 | scaled_font->backend->scaled_glyph_init (scaled_font, |
| 2914 | scaled_glyph, |
| 2915 | info | CAIRO_SCALED_GLYPH_INFO_METRICS, |
| 2916 | foreground_color); |
| 2917 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 2918 | _cairo_scaled_font_free_last_glyph (scaled_font, scaled_glyph); |
| 2919 | goto err; |
| 2920 | } |
| 2921 | |
| 2922 | status = _cairo_hash_table_insert (scaled_font->glyphs, |
| 2923 | &scaled_glyph->hash_entry); |
| 2924 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 2925 | _cairo_scaled_font_free_last_glyph (scaled_font, scaled_glyph); |
| 2926 | goto err; |
| 2927 | } |
| 2928 | } |
| 2929 | |
| 2930 | /* |
| 2931 | * Check and see if the glyph, as provided, |
| 2932 | * already has the requested data and amend it if not |
| 2933 | */ |
| 2934 | need_info = info & ~scaled_glyph->has_info; |
| 2935 | |
| 2936 | /* If this is not a color glyph, don't try loading the color surface again. */ |
| 2937 | if ((need_info & CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE) && |
| 2938 | scaled_glyph->color_glyph_set && !scaled_glyph->color_glyph) |
| 2939 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 2940 | |
| 2941 | /* If requesting a color surface or recording for a glyph that has |
| 2942 | * used the foreground color to render the recording, and the |
| 2943 | * foreground color has changed, request a new recording. */ |
| 2944 | if ((info & (CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE | CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE)) && |
| 2945 | scaled_glyph->recording_uses_foreground_color && |
| 2946 | !_cairo_color_equal (foreground_color, &scaled_glyph->foreground_color)) |
| 2947 | { |
| 2948 | need_info |= CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE; |
| 2949 | } |
| 2950 | |
| 2951 | /* If requesting a color surface for a glyph that has |
| 2952 | * used the foreground color to render the color_surface, and the |
| 2953 | * foreground color has changed, request a new image. */ |
| 2954 | if (info & CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE && |
| 2955 | (scaled_glyph->recording_uses_foreground_marker || scaled_glyph->recording_uses_foreground_color) && |
| 2956 | !_cairo_color_equal (foreground_color, &scaled_glyph->foreground_color)) |
| 2957 | { |
| 2958 | need_info |= CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE; |
| 2959 | } |
| 2960 | |
| 2961 | if (need_info) { |
| 2962 | status = scaled_font->backend->scaled_glyph_init (scaled_font, |
| 2963 | scaled_glyph, |
| 2964 | need_info, |
| 2965 | foreground_color); |
| 2966 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2967 | goto err; |
| 2968 | |
| 2969 | /* Don't trust the scaled_glyph_init() return value, the font |
| 2970 | * backend may not even know about some of the info. For example, |
| 2971 | * no backend other than the user-fonts knows about recording-surface |
| 2972 | * glyph info. */ |
| 2973 | if (info & ~scaled_glyph->has_info) |
| 2974 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 2975 | } |
| 2976 | |
| 2977 | *scaled_glyph_ret = scaled_glyph; |
| 2978 | return CAIRO_STATUS_SUCCESS; |
| 2979 | |
| 2980 | err: |
| 2981 | /* It's not an error for the backend to not support the info we want. */ |
| 2982 | if (status != CAIRO_INT_STATUS_UNSUPPORTED) |
| 2983 | status = _cairo_scaled_font_set_error (scaled_font, status); |
| 2984 | return status; |
| 2985 | } |
| 2986 | |
| 2987 | double |
| 2988 | _cairo_scaled_font_get_max_scale (cairo_scaled_font_t *scaled_font) |
| 2989 | { |
| 2990 | return scaled_font->max_scale; |
| 2991 | } |
| 2992 | |
| 2993 | /** |
| 2994 | * cairo_scaled_font_get_font_face: |
| 2995 | * @scaled_font: a #cairo_scaled_font_t |
| 2996 | * |
| 2997 | * Gets the font face that this scaled font uses. This might be the |
| 2998 | * font face passed to cairo_scaled_font_create(), but this does not |
| 2999 | * hold true for all possible cases. |
| 3000 | * |
| 3001 | * Return value: The #cairo_font_face_t with which @scaled_font was |
| 3002 | * created. This object is owned by cairo. To keep a reference to it, |
| 3003 | * you must call cairo_scaled_font_reference(). |
| 3004 | * |
| 3005 | * Since: 1.2 |
| 3006 | **/ |
| 3007 | cairo_font_face_t * |
| 3008 | cairo_scaled_font_get_font_face_moz_cairo_scaled_font_get_font_face (cairo_scaled_font_t *scaled_font) |
| 3009 | { |
| 3010 | if (scaled_font->status) |
| 3011 | return (cairo_font_face_t*) &_cairo_font_face_nil; |
| 3012 | |
| 3013 | if (scaled_font->original_font_face != NULL((void*)0)) |
| 3014 | return scaled_font->original_font_face; |
| 3015 | |
| 3016 | return scaled_font->font_face; |
| 3017 | } |
| 3018 | |
| 3019 | /** |
| 3020 | * cairo_scaled_font_get_font_matrix: |
| 3021 | * @scaled_font: a #cairo_scaled_font_t |
| 3022 | * @font_matrix: return value for the matrix |
| 3023 | * |
| 3024 | * Stores the font matrix with which @scaled_font was created into |
| 3025 | * @matrix. |
| 3026 | * |
| 3027 | * Since: 1.2 |
| 3028 | **/ |
| 3029 | void |
| 3030 | cairo_scaled_font_get_font_matrix_moz_cairo_scaled_font_get_font_matrix (cairo_scaled_font_t *scaled_font, |
| 3031 | cairo_matrix_t *font_matrix) |
| 3032 | { |
| 3033 | if (scaled_font->status) { |
| 3034 | cairo_matrix_init_identity_moz_cairo_matrix_init_identity (font_matrix); |
| 3035 | return; |
| 3036 | } |
| 3037 | |
| 3038 | *font_matrix = scaled_font->font_matrix; |
| 3039 | } |
| 3040 | |
| 3041 | /** |
| 3042 | * cairo_scaled_font_get_ctm: |
| 3043 | * @scaled_font: a #cairo_scaled_font_t |
| 3044 | * @ctm: return value for the CTM |
| 3045 | * |
| 3046 | * Stores the CTM with which @scaled_font was created into @ctm. |
| 3047 | * Note that the translation offsets (x0, y0) of the CTM are ignored |
| 3048 | * by cairo_scaled_font_create(). So, the matrix this |
| 3049 | * function returns always has 0,0 as x0,y0. |
| 3050 | * |
| 3051 | * Since: 1.2 |
| 3052 | **/ |
| 3053 | void |
| 3054 | cairo_scaled_font_get_ctm_moz_cairo_scaled_font_get_ctm (cairo_scaled_font_t *scaled_font, |
| 3055 | cairo_matrix_t *ctm) |
| 3056 | { |
| 3057 | if (scaled_font->status) { |
| 3058 | cairo_matrix_init_identity_moz_cairo_matrix_init_identity (ctm); |
| 3059 | return; |
| 3060 | } |
| 3061 | |
| 3062 | *ctm = scaled_font->ctm; |
| 3063 | } |
| 3064 | |
| 3065 | /** |
| 3066 | * cairo_scaled_font_get_scale_matrix: |
| 3067 | * @scaled_font: a #cairo_scaled_font_t |
| 3068 | * @scale_matrix: return value for the matrix |
| 3069 | * |
| 3070 | * Stores the scale matrix of @scaled_font into @matrix. |
| 3071 | * The scale matrix is product of the font matrix and the ctm |
| 3072 | * associated with the scaled font, and hence is the matrix mapping from |
| 3073 | * font space to device space. |
| 3074 | * |
| 3075 | * Since: 1.8 |
| 3076 | **/ |
| 3077 | void |
| 3078 | cairo_scaled_font_get_scale_matrix_moz_cairo_scaled_font_get_scale_matrix (cairo_scaled_font_t *scaled_font, |
| 3079 | cairo_matrix_t *scale_matrix) |
| 3080 | { |
| 3081 | if (scaled_font->status) { |
| 3082 | cairo_matrix_init_identity_moz_cairo_matrix_init_identity (scale_matrix); |
| 3083 | return; |
| 3084 | } |
| 3085 | |
| 3086 | *scale_matrix = scaled_font->scale; |
| 3087 | } |
| 3088 | |
| 3089 | /** |
| 3090 | * cairo_scaled_font_get_font_options: |
| 3091 | * @scaled_font: a #cairo_scaled_font_t |
| 3092 | * @options: return value for the font options |
| 3093 | * |
| 3094 | * Stores the font options with which @scaled_font was created into |
| 3095 | * @options. |
| 3096 | * |
| 3097 | * Since: 1.2 |
| 3098 | **/ |
| 3099 | void |
| 3100 | cairo_scaled_font_get_font_options_moz_cairo_scaled_font_get_font_options (cairo_scaled_font_t *scaled_font, |
| 3101 | cairo_font_options_t *options) |
| 3102 | { |
| 3103 | if (cairo_font_options_status_moz_cairo_font_options_status (options)) |
| 3104 | return; |
| 3105 | |
| 3106 | if (scaled_font->status) { |
| 3107 | _cairo_font_options_init_default (options); |
| 3108 | return; |
| 3109 | } |
| 3110 | |
| 3111 | _cairo_font_options_fini (options); |
| 3112 | _cairo_font_options_init_copy (options, &scaled_font->options); |
| 3113 | } |
| 3114 | |
| 3115 | cairo_bool_t |
| 3116 | _cairo_scaled_font_has_color_glyphs (cairo_scaled_font_t *scaled_font) |
| 3117 | { |
| 3118 | if (scaled_font->backend != NULL((void*)0) && scaled_font->backend->has_color_glyphs != NULL((void*)0)) |
| 3119 | return scaled_font->backend->has_color_glyphs (scaled_font); |
| 3120 | else |
| 3121 | return FALSE0; |
| 3122 | } |