| File: | root/firefox-clang/gfx/cairo/cairo/src/cairo-tee-surface.c |
| Warning: | line 499, column 2 Value stored to 'status' is never read |
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| 1 | /* cairo - a vector graphics library with display and print output |
| 2 | * |
| 3 | * Copyright © 2005 Red Hat, Inc |
| 4 | * Copyright © 2009 Chris Wilson |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it either under the terms of the GNU Lesser General Public |
| 8 | * License version 2.1 as published by the Free Software Foundation |
| 9 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
| 10 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
| 11 | * notice, a recipient may use your version of this file under either |
| 12 | * the MPL or the LGPL. |
| 13 | * |
| 14 | * You should have received a copy of the LGPL along with this library |
| 15 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
| 17 | * You should have received a copy of the MPL along with this library |
| 18 | * in the file COPYING-MPL-1.1 |
| 19 | * |
| 20 | * The contents of this file are subject to the Mozilla Public License |
| 21 | * Version 1.1 (the "License"); you may not use this file except in |
| 22 | * compliance with the License. You may obtain a copy of the License at |
| 23 | * http://www.mozilla.org/MPL/ |
| 24 | * |
| 25 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
| 26 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
| 27 | * the specific language governing rights and limitations. |
| 28 | * |
| 29 | * The Original Code is the cairo graphics library. |
| 30 | * |
| 31 | * The Initial Developer of the Original Code is Red Hat, Inc. |
| 32 | * |
| 33 | * Contributor(s): |
| 34 | * Carl Worth <cworth@cworth.org> |
| 35 | * Chris Wilson <chris@chris-wilson.co.uk> |
| 36 | */ |
| 37 | |
| 38 | /** |
| 39 | * SECTION:cairo-tee |
| 40 | * @Title: Tee surface |
| 41 | * @Short_Description: Redirect input to multiple surfaces |
| 42 | * @See_Also: #cairo_surface_t |
| 43 | * |
| 44 | * The "tee" surface supports redirecting all its input to multiple surfaces. |
| 45 | **/ |
| 46 | |
| 47 | /** |
| 48 | * CAIRO_HAS_TEE_SURFACE: |
| 49 | * |
| 50 | * Defined if the tee surface backend is available. |
| 51 | * |
| 52 | * Since: 1.10 |
| 53 | **/ |
| 54 | |
| 55 | #include "cairoint.h" |
| 56 | |
| 57 | #include "cairo-tee.h" |
| 58 | |
| 59 | #include "cairo-default-context-private.h" |
| 60 | #include "cairo-error-private.h" |
| 61 | #include "cairo-recording-surface-inline.h" |
| 62 | #include "cairo-surface-wrapper-private.h" |
| 63 | #include "cairo-array-private.h" |
| 64 | #include "cairo-image-surface-inline.h" |
| 65 | |
| 66 | typedef struct _cairo_tee_surface { |
| 67 | cairo_surface_t base; |
| 68 | |
| 69 | cairo_surface_wrapper_t primary; |
| 70 | cairo_array_t replicas; |
| 71 | } cairo_tee_surface_t; |
| 72 | |
| 73 | static cairo_surface_t * |
| 74 | _cairo_tee_surface_create_similar (void *abstract_surface, |
| 75 | cairo_content_t content, |
| 76 | int width, |
| 77 | int height) |
| 78 | { |
| 79 | |
| 80 | cairo_tee_surface_t *other = abstract_surface; |
| 81 | cairo_surface_t *similar; |
| 82 | cairo_surface_t *surface; |
| 83 | cairo_surface_wrapper_t *replicas; |
| 84 | int n, num_replicas; |
| 85 | |
| 86 | similar = _cairo_surface_wrapper_create_similar (&other->primary, |
| 87 | content, width, height); |
| 88 | surface = cairo_tee_surface_create_moz_cairo_tee_surface_create (similar); |
| 89 | cairo_surface_destroy_moz_cairo_surface_destroy (similar); |
| 90 | if (unlikely (surface->status)(__builtin_expect (!!(surface->status), 0))) |
| 91 | return surface; |
| 92 | |
| 93 | num_replicas = _cairo_array_num_elements (&other->replicas); |
| 94 | replicas = _cairo_array_index (&other->replicas, 0); |
| 95 | for (n = 0; n < num_replicas; n++) { |
| 96 | |
| 97 | similar = _cairo_surface_wrapper_create_similar (&replicas[n], |
| 98 | content, |
| 99 | width, height); |
| 100 | cairo_tee_surface_add_moz_cairo_tee_surface_add (surface, similar); |
| 101 | cairo_surface_destroy_moz_cairo_surface_destroy (similar); |
| 102 | } |
| 103 | |
| 104 | if (unlikely (surface->status)(__builtin_expect (!!(surface->status), 0))) { |
| 105 | cairo_status_t status = surface->status; |
| 106 | cairo_surface_destroy_moz_cairo_surface_destroy (surface); |
| 107 | surface = _cairo_surface_create_in_error (status); |
| 108 | } |
| 109 | |
| 110 | return surface; |
| 111 | } |
| 112 | |
| 113 | static cairo_status_t |
| 114 | _cairo_tee_surface_finish (void *abstract_surface) |
| 115 | { |
| 116 | cairo_tee_surface_t *surface = abstract_surface; |
| 117 | cairo_surface_wrapper_t *replicas; |
| 118 | int n, num_replicas; |
| 119 | |
| 120 | _cairo_surface_wrapper_fini (&surface->primary); |
| 121 | |
| 122 | num_replicas = _cairo_array_num_elements (&surface->replicas); |
| 123 | replicas = _cairo_array_index (&surface->replicas, 0); |
| 124 | for (n = 0; n < num_replicas; n++) |
| 125 | _cairo_surface_wrapper_fini (&replicas[n]); |
| 126 | |
| 127 | _cairo_array_fini (&surface->replicas); |
| 128 | |
| 129 | return CAIRO_STATUS_SUCCESS; |
| 130 | } |
| 131 | |
| 132 | static cairo_surface_t * |
| 133 | _cairo_tee_surface_source (void *abstract_surface, |
| 134 | cairo_rectangle_int_t *extents) |
| 135 | { |
| 136 | cairo_tee_surface_t *surface = abstract_surface; |
| 137 | return _cairo_surface_get_source (surface->primary.target, extents); |
| 138 | } |
| 139 | |
| 140 | static cairo_status_t |
| 141 | _cairo_tee_surface_acquire_source_image (void *abstract_surface, |
| 142 | cairo_image_surface_t **image_out, |
| 143 | void **image_extra) |
| 144 | { |
| 145 | cairo_tee_surface_t *surface = abstract_surface; |
| 146 | cairo_surface_wrapper_t *replicas; |
| 147 | int num_replicas, n; |
| 148 | |
| 149 | /* we prefer to use a real image surface if available */ |
| 150 | if (_cairo_surface_is_image (surface->primary.target)) { |
| 151 | return _cairo_surface_wrapper_acquire_source_image (&surface->primary, |
| 152 | image_out, image_extra); |
| 153 | } |
| 154 | |
| 155 | num_replicas = _cairo_array_num_elements (&surface->replicas); |
| 156 | replicas = _cairo_array_index (&surface->replicas, 0); |
| 157 | for (n = 0; n < num_replicas; n++) { |
| 158 | if (_cairo_surface_is_image (replicas[n].target)) { |
| 159 | return _cairo_surface_wrapper_acquire_source_image (&replicas[n], |
| 160 | image_out, |
| 161 | image_extra); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | return _cairo_surface_wrapper_acquire_source_image (&surface->primary, |
| 166 | image_out, image_extra); |
| 167 | } |
| 168 | |
| 169 | static void |
| 170 | _cairo_tee_surface_release_source_image (void *abstract_surface, |
| 171 | cairo_image_surface_t *image, |
| 172 | void *image_extra) |
| 173 | { |
| 174 | cairo_tee_surface_t *surface = abstract_surface; |
| 175 | |
| 176 | _cairo_surface_wrapper_release_source_image (&surface->primary, |
| 177 | image, image_extra); |
| 178 | } |
| 179 | |
| 180 | static cairo_surface_t * |
| 181 | _cairo_tee_surface_snapshot (void *abstract_surface) |
| 182 | { |
| 183 | cairo_tee_surface_t *surface = abstract_surface; |
| 184 | cairo_surface_wrapper_t *replicas; |
| 185 | int num_replicas, n; |
| 186 | |
| 187 | /* we prefer to use a recording surface for our snapshots */ |
| 188 | if (_cairo_surface_is_recording (surface->primary.target)) |
| 189 | return _cairo_surface_wrapper_snapshot (&surface->primary); |
| 190 | |
| 191 | num_replicas = _cairo_array_num_elements (&surface->replicas); |
| 192 | replicas = _cairo_array_index (&surface->replicas, 0); |
| 193 | for (n = 0; n < num_replicas; n++) { |
| 194 | if (_cairo_surface_is_recording (replicas[n].target)) |
| 195 | return _cairo_surface_wrapper_snapshot (&replicas[n]); |
| 196 | } |
| 197 | |
| 198 | return _cairo_surface_wrapper_snapshot (&surface->primary); |
| 199 | } |
| 200 | |
| 201 | static cairo_bool_t |
| 202 | _cairo_tee_surface_get_extents (void *abstract_surface, |
| 203 | cairo_rectangle_int_t *rectangle) |
| 204 | { |
| 205 | cairo_tee_surface_t *surface = abstract_surface; |
| 206 | |
| 207 | return _cairo_surface_wrapper_get_extents (&surface->primary, rectangle); |
| 208 | } |
| 209 | |
| 210 | static void |
| 211 | _cairo_tee_surface_get_font_options (void *abstract_surface, |
| 212 | cairo_font_options_t *options) |
| 213 | { |
| 214 | cairo_tee_surface_t *surface = abstract_surface; |
| 215 | |
| 216 | _cairo_surface_wrapper_get_font_options (&surface->primary, options); |
| 217 | } |
| 218 | |
| 219 | static cairo_int_status_t |
| 220 | _cairo_tee_surface_paint (void *abstract_surface, |
| 221 | cairo_operator_t op, |
| 222 | const cairo_pattern_t *source, |
| 223 | const cairo_clip_t *clip) |
| 224 | { |
| 225 | cairo_tee_surface_t *surface = abstract_surface; |
| 226 | cairo_surface_wrapper_t *replicas; |
| 227 | int n, num_replicas; |
| 228 | cairo_int_status_t status; |
| 229 | |
| 230 | num_replicas = _cairo_array_num_elements (&surface->replicas); |
| 231 | replicas = _cairo_array_index (&surface->replicas, 0); |
| 232 | for (n = 0; n < num_replicas; n++) { |
| 233 | status = _cairo_surface_wrapper_paint (&replicas[n], op, source, 0, clip); |
| 234 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 235 | return status; |
| 236 | } |
| 237 | |
| 238 | return _cairo_surface_wrapper_paint (&surface->primary, op, source, 0, clip); |
| 239 | } |
| 240 | |
| 241 | static cairo_int_status_t |
| 242 | _cairo_tee_surface_mask (void *abstract_surface, |
| 243 | cairo_operator_t op, |
| 244 | const cairo_pattern_t *source, |
| 245 | const cairo_pattern_t *mask, |
| 246 | const cairo_clip_t *clip) |
| 247 | { |
| 248 | cairo_tee_surface_t *surface = abstract_surface; |
| 249 | cairo_surface_wrapper_t *replicas; |
| 250 | cairo_int_status_t status; |
| 251 | int n, num_replicas; |
| 252 | |
| 253 | num_replicas = _cairo_array_num_elements (&surface->replicas); |
| 254 | replicas = _cairo_array_index (&surface->replicas, 0); |
| 255 | for (n = 0; n < num_replicas; n++) { |
| 256 | status = _cairo_surface_wrapper_mask (&replicas[n], |
| 257 | op, source, 0, |
| 258 | mask, 0, |
| 259 | clip); |
| 260 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 261 | return status; |
| 262 | } |
| 263 | |
| 264 | return _cairo_surface_wrapper_mask (&surface->primary, |
| 265 | op, source, 0, |
| 266 | mask, 0, |
| 267 | clip); |
| 268 | } |
| 269 | |
| 270 | static cairo_int_status_t |
| 271 | _cairo_tee_surface_stroke (void *abstract_surface, |
| 272 | cairo_operator_t op, |
| 273 | const cairo_pattern_t *source, |
| 274 | const cairo_path_fixed_t *path, |
| 275 | const cairo_stroke_style_t *style, |
| 276 | const cairo_matrix_t *ctm, |
| 277 | const cairo_matrix_t *ctm_inverse, |
| 278 | double tolerance, |
| 279 | cairo_antialias_t antialias, |
| 280 | const cairo_clip_t *clip) |
| 281 | { |
| 282 | cairo_tee_surface_t *surface = abstract_surface; |
| 283 | cairo_surface_wrapper_t *replicas; |
| 284 | cairo_int_status_t status; |
| 285 | int n, num_replicas; |
| 286 | |
| 287 | num_replicas = _cairo_array_num_elements (&surface->replicas); |
| 288 | replicas = _cairo_array_index (&surface->replicas, 0); |
| 289 | for (n = 0; n < num_replicas; n++) { |
| 290 | status = _cairo_surface_wrapper_stroke (&replicas[n], |
| 291 | op, source, 0, |
| 292 | path, style, |
| 293 | ctm, ctm_inverse, |
| 294 | tolerance, antialias, |
| 295 | clip); |
| 296 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 297 | return status; |
| 298 | } |
| 299 | |
| 300 | return _cairo_surface_wrapper_stroke (&surface->primary, |
| 301 | op, source, 0, |
| 302 | path, style, |
| 303 | ctm, ctm_inverse, |
| 304 | tolerance, antialias, |
| 305 | clip); |
| 306 | } |
| 307 | |
| 308 | static cairo_int_status_t |
| 309 | _cairo_tee_surface_fill (void *abstract_surface, |
| 310 | cairo_operator_t op, |
| 311 | const cairo_pattern_t *source, |
| 312 | const cairo_path_fixed_t *path, |
| 313 | cairo_fill_rule_t fill_rule, |
| 314 | double tolerance, |
| 315 | cairo_antialias_t antialias, |
| 316 | const cairo_clip_t *clip) |
| 317 | { |
| 318 | cairo_tee_surface_t *surface = abstract_surface; |
| 319 | cairo_surface_wrapper_t *replicas; |
| 320 | cairo_int_status_t status; |
| 321 | int n, num_replicas; |
| 322 | |
| 323 | num_replicas = _cairo_array_num_elements (&surface->replicas); |
| 324 | replicas = _cairo_array_index (&surface->replicas, 0); |
| 325 | for (n = 0; n < num_replicas; n++) { |
| 326 | status = _cairo_surface_wrapper_fill (&replicas[n], |
| 327 | op, source, 0, |
| 328 | path, fill_rule, |
| 329 | tolerance, antialias, |
| 330 | clip); |
| 331 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 332 | return status; |
| 333 | } |
| 334 | |
| 335 | return _cairo_surface_wrapper_fill (&surface->primary, |
| 336 | op, source, 0, |
| 337 | path, fill_rule, |
| 338 | tolerance, antialias, |
| 339 | clip); |
| 340 | } |
| 341 | |
| 342 | static cairo_bool_t |
| 343 | _cairo_tee_surface_has_show_text_glyphs (void *abstract_surface) |
| 344 | { |
| 345 | return TRUE1; |
| 346 | } |
| 347 | |
| 348 | static cairo_int_status_t |
| 349 | _cairo_tee_surface_show_text_glyphs (void *abstract_surface, |
| 350 | cairo_operator_t op, |
| 351 | const cairo_pattern_t *source, |
| 352 | const char *utf8, |
| 353 | int utf8_len, |
| 354 | cairo_glyph_t *glyphs, |
| 355 | int num_glyphs, |
| 356 | const cairo_text_cluster_t *clusters, |
| 357 | int num_clusters, |
| 358 | cairo_text_cluster_flags_t cluster_flags, |
| 359 | cairo_scaled_font_t *scaled_font, |
| 360 | const cairo_clip_t *clip) |
| 361 | { |
| 362 | cairo_tee_surface_t *surface = abstract_surface; |
| 363 | cairo_surface_wrapper_t *replicas; |
| 364 | cairo_int_status_t status; |
| 365 | int n, num_replicas; |
| 366 | cairo_glyph_t *glyphs_copy; |
| 367 | |
| 368 | /* XXX: This copying is ugly. */ |
| 369 | glyphs_copy = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t)); |
| 370 | if (unlikely (glyphs_copy == NULL)(__builtin_expect (!!(glyphs_copy == ((void*)0)), 0))) |
| 371 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
| 372 | |
| 373 | num_replicas = _cairo_array_num_elements (&surface->replicas); |
| 374 | replicas = _cairo_array_index (&surface->replicas, 0); |
| 375 | for (n = 0; n < num_replicas; n++) { |
| 376 | memcpy (glyphs_copy, glyphs, sizeof (cairo_glyph_t) * num_glyphs); |
| 377 | status = _cairo_surface_wrapper_show_text_glyphs (&replicas[n], op, |
| 378 | source, 0, |
| 379 | utf8, utf8_len, |
| 380 | glyphs_copy, num_glyphs, |
| 381 | clusters, num_clusters, |
| 382 | cluster_flags, |
| 383 | scaled_font, |
| 384 | clip); |
| 385 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 386 | goto CLEANUP; |
| 387 | } |
| 388 | |
| 389 | memcpy (glyphs_copy, glyphs, sizeof (cairo_glyph_t) * num_glyphs); |
| 390 | status = _cairo_surface_wrapper_show_text_glyphs (&surface->primary, op, |
| 391 | source, 0, |
| 392 | utf8, utf8_len, |
| 393 | glyphs_copy, num_glyphs, |
| 394 | clusters, num_clusters, |
| 395 | cluster_flags, |
| 396 | scaled_font, |
| 397 | clip); |
| 398 | CLEANUP: |
| 399 | free (glyphs_copy); |
| 400 | return status; |
| 401 | } |
| 402 | |
| 403 | static const cairo_surface_backend_t cairo_tee_surface_backend = { |
| 404 | CAIRO_SURFACE_TYPE_TEE, |
| 405 | _cairo_tee_surface_finish, |
| 406 | |
| 407 | _cairo_default_context_create, /* XXX */ |
| 408 | |
| 409 | _cairo_tee_surface_create_similar, |
| 410 | NULL((void*)0), /* create similar image */ |
| 411 | NULL((void*)0), /* map to image */ |
| 412 | NULL((void*)0), /* unmap image */ |
| 413 | |
| 414 | _cairo_tee_surface_source, |
| 415 | _cairo_tee_surface_acquire_source_image, |
| 416 | _cairo_tee_surface_release_source_image, |
| 417 | _cairo_tee_surface_snapshot, |
| 418 | NULL((void*)0), /* copy_page */ |
| 419 | NULL((void*)0), /* show_page */ |
| 420 | _cairo_tee_surface_get_extents, |
| 421 | _cairo_tee_surface_get_font_options, |
| 422 | NULL((void*)0), /* flush */ |
| 423 | NULL((void*)0), /* mark_dirty_rectangle */ |
| 424 | |
| 425 | _cairo_tee_surface_paint, |
| 426 | _cairo_tee_surface_mask, |
| 427 | _cairo_tee_surface_stroke, |
| 428 | _cairo_tee_surface_fill, |
| 429 | NULL((void*)0), /* fill_stroke */ |
| 430 | |
| 431 | NULL((void*)0), /* show_glyphs */ |
| 432 | |
| 433 | _cairo_tee_surface_has_show_text_glyphs, |
| 434 | _cairo_tee_surface_show_text_glyphs |
| 435 | }; |
| 436 | |
| 437 | /** |
| 438 | * cairo_tee_surface_create: |
| 439 | * @primary: the primary #cairo_surface_t |
| 440 | * |
| 441 | * Creates a new "tee" surface. |
| 442 | * |
| 443 | * The @primary surface is used when querying surface options, like |
| 444 | * font options and extents. |
| 445 | * |
| 446 | * Operations performed on the tee surface will be replayed on any |
| 447 | * surface added to it. |
| 448 | * |
| 449 | * Returns: the newly created surface |
| 450 | * |
| 451 | * Since: 1.10 |
| 452 | **/ |
| 453 | cairo_surface_t * |
| 454 | cairo_tee_surface_create_moz_cairo_tee_surface_create (cairo_surface_t *primary) |
| 455 | { |
| 456 | cairo_tee_surface_t *surface; |
| 457 | |
| 458 | if (unlikely (primary->status)(__builtin_expect (!!(primary->status), 0))) |
| 459 | return _cairo_surface_create_in_error (primary->status); |
| 460 | |
| 461 | surface = _cairo_malloc (sizeof (cairo_tee_surface_t))((sizeof (cairo_tee_surface_t)) != 0 ? malloc(sizeof (cairo_tee_surface_t )) : ((void*)0)); |
| 462 | if (unlikely (surface == NULL)(__builtin_expect (!!(surface == ((void*)0)), 0))) |
| 463 | return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY)); |
| 464 | |
| 465 | _cairo_surface_init (&surface->base, |
| 466 | &cairo_tee_surface_backend, |
| 467 | primary->device, |
| 468 | primary->content, |
| 469 | TRUE1); /* is_vector */ |
| 470 | |
| 471 | _cairo_surface_wrapper_init (&surface->primary, primary); |
| 472 | |
| 473 | _cairo_array_init (&surface->replicas, sizeof (cairo_surface_wrapper_t)); |
| 474 | |
| 475 | return &surface->base; |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * cairo_tee_surface_add: |
| 480 | * @abstract_surface: a #cairo_tee_surface_t |
| 481 | * @target: the surface to add |
| 482 | * |
| 483 | * Adds a new target surface to the list of replicas of a |
| 484 | * tee surface. |
| 485 | * |
| 486 | * Since: 1.10 |
| 487 | **/ |
| 488 | void |
| 489 | cairo_tee_surface_add_moz_cairo_tee_surface_add (cairo_surface_t *abstract_surface, |
| 490 | cairo_surface_t *target) |
| 491 | { |
| 492 | cairo_tee_surface_t *surface; |
| 493 | cairo_surface_wrapper_t replica; |
| 494 | cairo_status_t status; |
| 495 | |
| 496 | if (unlikely (abstract_surface->status)(__builtin_expect (!!(abstract_surface->status), 0))) |
| 497 | return; |
| 498 | if (unlikely (abstract_surface->finished)(__builtin_expect (!!(abstract_surface->finished), 0))) { |
| 499 | status = _cairo_surface_set_error (abstract_surface, |
Value stored to 'status' is never read | |
| 500 | _cairo_error (CAIRO_STATUS_SURFACE_FINISHED)); |
| 501 | return; |
| 502 | } |
| 503 | |
| 504 | if (abstract_surface->backend != &cairo_tee_surface_backend) { |
| 505 | status = _cairo_surface_set_error (abstract_surface, |
| 506 | _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH)); |
| 507 | return; |
| 508 | } |
| 509 | |
| 510 | if (unlikely (target->status)(__builtin_expect (!!(target->status), 0))) { |
| 511 | status = _cairo_surface_set_error (abstract_surface, target->status); |
| 512 | return; |
| 513 | } |
| 514 | |
| 515 | surface = (cairo_tee_surface_t *) abstract_surface; |
| 516 | |
| 517 | _cairo_surface_wrapper_init (&replica, target); |
| 518 | status = _cairo_array_append (&surface->replicas, &replica); |
| 519 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 520 | _cairo_surface_wrapper_fini (&replica); |
| 521 | status = _cairo_surface_set_error (&surface->base, status); |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | /** |
| 526 | * cairo_tee_surface_remove: |
| 527 | * @abstract_surface: a #cairo_tee_surface_t |
| 528 | * @target: the surface to remove |
| 529 | * |
| 530 | * Removes the given surface from the list of replicas of a |
| 531 | * tee surface. |
| 532 | * |
| 533 | * Since: 1.10 |
| 534 | **/ |
| 535 | void |
| 536 | cairo_tee_surface_remove_moz_cairo_tee_surface_remove (cairo_surface_t *abstract_surface, |
| 537 | cairo_surface_t *target) |
| 538 | { |
| 539 | cairo_tee_surface_t *surface; |
| 540 | cairo_surface_wrapper_t *replicas; |
| 541 | int n, num_replicas; |
| 542 | |
| 543 | if (unlikely (abstract_surface->status)(__builtin_expect (!!(abstract_surface->status), 0))) |
| 544 | return; |
| 545 | if (unlikely (abstract_surface->finished)(__builtin_expect (!!(abstract_surface->finished), 0))) { |
| 546 | _cairo_surface_set_error (abstract_surface, |
| 547 | _cairo_error (CAIRO_STATUS_SURFACE_FINISHED)); |
| 548 | return; |
| 549 | } |
| 550 | |
| 551 | if (abstract_surface->backend != &cairo_tee_surface_backend) { |
| 552 | _cairo_surface_set_error (abstract_surface, |
| 553 | _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH)); |
| 554 | return; |
| 555 | } |
| 556 | |
| 557 | surface = (cairo_tee_surface_t *) abstract_surface; |
| 558 | if (target == surface->primary.target) { |
| 559 | _cairo_surface_set_error (abstract_surface, |
| 560 | _cairo_error (CAIRO_STATUS_INVALID_INDEX)); |
| 561 | return; |
| 562 | } |
| 563 | |
| 564 | num_replicas = _cairo_array_num_elements (&surface->replicas); |
| 565 | replicas = _cairo_array_index (&surface->replicas, 0); |
| 566 | for (n = 0; n < num_replicas; n++) { |
| 567 | if (replicas[n].target == target) |
| 568 | break; |
| 569 | } |
| 570 | |
| 571 | if (n == num_replicas) { |
| 572 | _cairo_surface_set_error (abstract_surface, |
| 573 | _cairo_error (CAIRO_STATUS_INVALID_INDEX)); |
| 574 | return; |
| 575 | } |
| 576 | |
| 577 | _cairo_surface_wrapper_fini (&replicas[n]); |
| 578 | for (n++; n < num_replicas; n++) |
| 579 | replicas[n-1] = replicas[n]; |
| 580 | surface->replicas.num_elements--; /* XXX: cairo_array_remove()? */ |
| 581 | } |
| 582 | |
| 583 | /** |
| 584 | * cairo_tee_surface_index: |
| 585 | * @abstract_surface: a #cairo_tee_surface_t |
| 586 | * @index: the index of the replica to retrieve |
| 587 | * |
| 588 | * Retrieves the replica surface at the given index. |
| 589 | * |
| 590 | * The primary surface used to create the #cairo_tee_surface_t is |
| 591 | * always set at the zero index. |
| 592 | * |
| 593 | * Returns: the surface at the given index |
| 594 | * |
| 595 | * Since: 1.10 |
| 596 | **/ |
| 597 | cairo_surface_t * |
| 598 | cairo_tee_surface_index_moz_cairo_tee_surface_index (cairo_surface_t *abstract_surface, |
| 599 | unsigned int index) |
| 600 | { |
| 601 | cairo_tee_surface_t *surface; |
| 602 | |
| 603 | if (unlikely (abstract_surface->status)(__builtin_expect (!!(abstract_surface->status), 0))) |
| 604 | return _cairo_surface_create_in_error (abstract_surface->status); |
| 605 | if (unlikely (abstract_surface->finished)(__builtin_expect (!!(abstract_surface->finished), 0))) |
| 606 | return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED)); |
| 607 | |
| 608 | if (abstract_surface->backend != &cairo_tee_surface_backend) |
| 609 | return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH)); |
| 610 | |
| 611 | surface = (cairo_tee_surface_t *) abstract_surface; |
| 612 | if (index == 0) { |
| 613 | return surface->primary.target; |
| 614 | } else { |
| 615 | cairo_surface_wrapper_t *replica; |
| 616 | |
| 617 | index--; |
| 618 | |
| 619 | if (index >= _cairo_array_num_elements (&surface->replicas)) |
| 620 | return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_INDEX)); |
| 621 | |
| 622 | replica = _cairo_array_index (&surface->replicas, index); |
| 623 | return replica->target; |
| 624 | } |
| 625 | } |