| File: | root/firefox-clang/gfx/cairo/cairo/src/cairo-traps-compositor.c |
| Warning: | line 1574, column 5 Value stored to 'status' is never read |
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| 1 | /* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */ |
| 2 | /* cairo - a vector graphics library with display and print output |
| 3 | * |
| 4 | * Copyright © 2002 University of Southern California |
| 5 | * Copyright © 2005 Red Hat, Inc. |
| 6 | * Copyright © 2011 Intel Corporation |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it either under the terms of the GNU Lesser General Public |
| 10 | * License version 2.1 as published by the Free Software Foundation |
| 11 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
| 12 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
| 13 | * notice, a recipient may use your version of this file under either |
| 14 | * the MPL or the LGPL. |
| 15 | * |
| 16 | * You should have received a copy of the LGPL along with this library |
| 17 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
| 19 | * You should have received a copy of the MPL along with this library |
| 20 | * in the file COPYING-MPL-1.1 |
| 21 | * |
| 22 | * The contents of this file are subject to the Mozilla Public License |
| 23 | * Version 1.1 (the "License"); you may not use this file except in |
| 24 | * compliance with the License. You may obtain a copy of the License at |
| 25 | * http://www.mozilla.org/MPL/ |
| 26 | * |
| 27 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
| 28 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
| 29 | * the specific language governing rights and limitations. |
| 30 | * |
| 31 | * The Original Code is the cairo graphics library. |
| 32 | * |
| 33 | * The Initial Developer of the Original Code is University of Southern |
| 34 | * California. |
| 35 | * |
| 36 | * Contributor(s): |
| 37 | * Carl D. Worth <cworth@cworth.org> |
| 38 | * Joonas Pihlaja <jpihlaja@cc.helsinki.fi> |
| 39 | * Chris Wilson <chris@chris-wilson.co.uk> |
| 40 | */ |
| 41 | |
| 42 | #include "cairoint.h" |
| 43 | |
| 44 | #include "cairo-box-inline.h" |
| 45 | #include "cairo-boxes-private.h" |
| 46 | #include "cairo-clip-inline.h" |
| 47 | #include "cairo-clip-private.h" |
| 48 | #include "cairo-composite-rectangles-private.h" |
| 49 | #include "cairo-compositor-private.h" |
| 50 | #include "cairo-error-private.h" |
| 51 | #include "cairo-image-surface-private.h" |
| 52 | #include "cairo-pattern-inline.h" |
| 53 | #include "cairo-paginated-private.h" |
| 54 | #include "cairo-recording-surface-inline.h" |
| 55 | #include "cairo-surface-subsurface-private.h" |
| 56 | #include "cairo-surface-snapshot-inline.h" |
| 57 | #include "cairo-surface-observer-private.h" |
| 58 | #include "cairo-region-private.h" |
| 59 | #include "cairo-spans-private.h" |
| 60 | #include "cairo-traps-private.h" |
| 61 | #include "cairo-tristrip-private.h" |
| 62 | |
| 63 | typedef cairo_int_status_t |
| 64 | (*draw_func_t) (const cairo_traps_compositor_t *compositor, |
| 65 | cairo_surface_t *dst, |
| 66 | void *closure, |
| 67 | cairo_operator_t op, |
| 68 | cairo_surface_t *src, |
| 69 | int src_x, |
| 70 | int src_y, |
| 71 | int dst_x, |
| 72 | int dst_y, |
| 73 | const cairo_rectangle_int_t *extents, |
| 74 | cairo_clip_t *clip); |
| 75 | |
| 76 | static void do_unaligned_row(void (*blt)(void *closure, |
| 77 | int16_t x, int16_t y, |
| 78 | int16_t w, int16_t h, |
| 79 | uint16_t coverage), |
| 80 | void *closure, |
| 81 | const cairo_box_t *b, |
| 82 | int tx, int y, int h, |
| 83 | uint16_t coverage) |
| 84 | { |
| 85 | int x1 = _cairo_fixed_integer_part (b->p1.x) - tx; |
| 86 | int x2 = _cairo_fixed_integer_part (b->p2.x) - tx; |
| 87 | if (x2 > x1) { |
| 88 | if (! _cairo_fixed_is_integer (b->p1.x)) { |
| 89 | blt(closure, x1, y, 1, h, |
| 90 | coverage * (256 - _cairo_fixed_fractional_part (b->p1.x))); |
| 91 | x1++; |
| 92 | } |
| 93 | |
| 94 | if (x2 > x1) |
| 95 | blt(closure, x1, y, x2-x1, h, (coverage << 8) - (coverage >> 8)); |
| 96 | |
| 97 | if (! _cairo_fixed_is_integer (b->p2.x)) |
| 98 | blt(closure, x2, y, 1, h, |
| 99 | coverage * _cairo_fixed_fractional_part (b->p2.x)); |
| 100 | } else |
| 101 | blt(closure, x1, y, 1, h, |
| 102 | coverage * (b->p2.x - b->p1.x)); |
| 103 | } |
| 104 | |
| 105 | static void do_unaligned_box(void (*blt)(void *closure, |
| 106 | int16_t x, int16_t y, |
| 107 | int16_t w, int16_t h, |
| 108 | uint16_t coverage), |
| 109 | void *closure, |
| 110 | const cairo_box_t *b, int tx, int ty) |
| 111 | { |
| 112 | int y1 = _cairo_fixed_integer_part (b->p1.y) - ty; |
| 113 | int y2 = _cairo_fixed_integer_part (b->p2.y) - ty; |
| 114 | if (y2 > y1) { |
| 115 | if (! _cairo_fixed_is_integer (b->p1.y)) { |
| 116 | do_unaligned_row(blt, closure, b, tx, y1, 1, |
| 117 | 256 - _cairo_fixed_fractional_part (b->p1.y)); |
| 118 | y1++; |
| 119 | } |
| 120 | |
| 121 | if (y2 > y1) |
| 122 | do_unaligned_row(blt, closure, b, tx, y1, y2-y1, 256); |
| 123 | |
| 124 | if (! _cairo_fixed_is_integer (b->p2.y)) |
| 125 | do_unaligned_row(blt, closure, b, tx, y2, 1, |
| 126 | _cairo_fixed_fractional_part (b->p2.y)); |
| 127 | } else |
| 128 | do_unaligned_row(blt, closure, b, tx, y1, 1, |
| 129 | b->p2.y - b->p1.y); |
| 130 | } |
| 131 | |
| 132 | struct blt_in { |
| 133 | const cairo_traps_compositor_t *compositor; |
| 134 | cairo_surface_t *dst; |
| 135 | cairo_boxes_t boxes; |
| 136 | }; |
| 137 | |
| 138 | static void blt_in(void *closure, |
| 139 | int16_t x, int16_t y, |
| 140 | int16_t w, int16_t h, |
| 141 | uint16_t coverage) |
| 142 | { |
| 143 | struct blt_in *info = closure; |
| 144 | cairo_color_t color; |
| 145 | |
| 146 | if (CAIRO_ALPHA_SHORT_IS_OPAQUE (coverage)((coverage) >= 0xff00)) |
| 147 | return; |
| 148 | |
| 149 | _cairo_box_from_integers (&info->boxes.chunks.base[0], x, y, w, h); |
| 150 | |
| 151 | _cairo_color_init_rgba (&color, 0, 0, 0, coverage / (double) 0xffff); |
| 152 | info->compositor->fill_boxes (info->dst, |
| 153 | CAIRO_OPERATOR_IN, &color, |
| 154 | &info->boxes); |
| 155 | } |
| 156 | |
| 157 | static void |
| 158 | add_rect_with_offset (cairo_boxes_t *boxes, int x1, int y1, int x2, int y2, int dx, int dy) |
| 159 | { |
| 160 | cairo_box_t box; |
| 161 | cairo_int_status_t status; |
| 162 | |
| 163 | box.p1.x = _cairo_fixed_from_int (x1 - dx); |
| 164 | box.p1.y = _cairo_fixed_from_int (y1 - dy); |
| 165 | box.p2.x = _cairo_fixed_from_int (x2 - dx); |
| 166 | box.p2.y = _cairo_fixed_from_int (y2 - dy); |
| 167 | |
| 168 | status = _cairo_boxes_add (boxes, CAIRO_ANTIALIAS_DEFAULT, &box); |
| 169 | assert (status == CAIRO_INT_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_INT_STATUS_SUCCESS) ? 1 : 0) , __extension__ ({ if (status == CAIRO_INT_STATUS_SUCCESS) ; else __assert_fail ("status == CAIRO_INT_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-traps-compositor.c" , 169, __extension__ __PRETTY_FUNCTION__); })); |
| 170 | } |
| 171 | |
| 172 | static cairo_int_status_t |
| 173 | combine_clip_as_traps (const cairo_traps_compositor_t *compositor, |
| 174 | cairo_surface_t *mask, |
| 175 | const cairo_clip_t *clip, |
| 176 | const cairo_rectangle_int_t *extents) |
| 177 | { |
| 178 | cairo_polygon_t polygon; |
| 179 | cairo_fill_rule_t fill_rule; |
| 180 | cairo_antialias_t antialias; |
| 181 | cairo_traps_t traps; |
| 182 | cairo_surface_t *src; |
| 183 | cairo_box_t box; |
| 184 | cairo_rectangle_int_t fixup; |
| 185 | int src_x, src_y; |
| 186 | cairo_int_status_t status; |
| 187 | |
| 188 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 189 | |
| 190 | status = _cairo_clip_get_polygon (clip, &polygon, |
| 191 | &fill_rule, &antialias); |
| 192 | if (status) |
| 193 | return status; |
| 194 | |
| 195 | _cairo_traps_init (&traps); |
| 196 | status = _cairo_bentley_ottmann_tessellate_polygon (&traps, |
| 197 | &polygon, |
| 198 | fill_rule); |
| 199 | _cairo_polygon_fini (&polygon); |
| 200 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 201 | return status; |
| 202 | |
| 203 | src = compositor->pattern_to_surface (mask, NULL((void*)0), FALSE0, |
| 204 | extents, NULL((void*)0), |
| 205 | &src_x, &src_y); |
| 206 | if (unlikely (src->status)(__builtin_expect (!!(src->status), 0))) { |
| 207 | _cairo_traps_fini (&traps); |
| 208 | return src->status; |
| 209 | } |
| 210 | |
| 211 | status = compositor->composite_traps (mask, CAIRO_OPERATOR_IN, src, |
| 212 | src_x, src_y, |
| 213 | extents->x, extents->y, |
| 214 | extents, |
| 215 | antialias, &traps); |
| 216 | |
| 217 | _cairo_traps_extents (&traps, &box); |
| 218 | _cairo_box_round_to_rectangle (&box, &fixup); |
| 219 | _cairo_traps_fini (&traps); |
| 220 | cairo_surface_destroy_moz_cairo_surface_destroy (src); |
| 221 | |
| 222 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 223 | return status; |
| 224 | |
| 225 | if (! _cairo_rectangle_intersect (&fixup, extents)) |
| 226 | return CAIRO_STATUS_SUCCESS; |
| 227 | |
| 228 | if (fixup.width < extents->width || fixup.height < extents->height) { |
| 229 | cairo_boxes_t clear; |
| 230 | |
| 231 | _cairo_boxes_init (&clear); |
| 232 | |
| 233 | /* top */ |
| 234 | if (fixup.y != extents->y) { |
| 235 | add_rect_with_offset (&clear, |
| 236 | extents->x, extents->y, |
| 237 | extents->x + extents->width, |
| 238 | fixup.y, |
| 239 | extents->x, extents->y); |
| 240 | } |
| 241 | /* left */ |
| 242 | if (fixup.x != extents->x) { |
| 243 | add_rect_with_offset (&clear, |
| 244 | extents->x, fixup.y, |
| 245 | fixup.x, |
| 246 | fixup.y + fixup.height, |
| 247 | extents->x, extents->y); |
| 248 | } |
| 249 | /* right */ |
| 250 | if (fixup.x + fixup.width != extents->x + extents->width) { |
| 251 | add_rect_with_offset (&clear, |
| 252 | fixup.x + fixup.width, |
| 253 | fixup.y, |
| 254 | extents->x + extents->width, |
| 255 | fixup.y + fixup.height, |
| 256 | extents->x, extents->y); |
| 257 | } |
| 258 | /* bottom */ |
| 259 | if (fixup.y + fixup.height != extents->y + extents->height) { |
| 260 | add_rect_with_offset (&clear, |
| 261 | extents->x, |
| 262 | fixup.y + fixup.height, |
| 263 | extents->x + extents->width, |
| 264 | extents->y + extents->height, |
| 265 | extents->x, extents->y); |
| 266 | } |
| 267 | |
| 268 | status = compositor->fill_boxes (mask, |
| 269 | CAIRO_OPERATOR_CLEAR, |
| 270 | CAIRO_COLOR_TRANSPARENT_cairo_stock_color (CAIRO_STOCK_TRANSPARENT), |
| 271 | &clear); |
| 272 | |
| 273 | _cairo_boxes_fini (&clear); |
| 274 | } |
| 275 | |
| 276 | return status; |
| 277 | } |
| 278 | |
| 279 | static cairo_status_t |
| 280 | __clip_to_surface (const cairo_traps_compositor_t *compositor, |
| 281 | const cairo_composite_rectangles_t *composite, |
| 282 | const cairo_rectangle_int_t *extents, |
| 283 | cairo_surface_t **surface) |
| 284 | { |
| 285 | cairo_surface_t *mask; |
| 286 | cairo_polygon_t polygon; |
| 287 | cairo_fill_rule_t fill_rule; |
| 288 | cairo_antialias_t antialias; |
| 289 | cairo_traps_t traps; |
| 290 | cairo_boxes_t clear; |
| 291 | cairo_surface_t *src; |
| 292 | int src_x, src_y; |
| 293 | cairo_int_status_t status; |
| 294 | |
| 295 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 296 | |
| 297 | status = _cairo_clip_get_polygon (composite->clip, &polygon, |
| 298 | &fill_rule, &antialias); |
| 299 | if (status) |
| 300 | return status; |
| 301 | |
| 302 | _cairo_traps_init (&traps); |
| 303 | status = _cairo_bentley_ottmann_tessellate_polygon (&traps, |
| 304 | &polygon, |
| 305 | fill_rule); |
| 306 | _cairo_polygon_fini (&polygon); |
| 307 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 308 | return status; |
| 309 | |
| 310 | mask = _cairo_surface_create_scratch (composite->surface, |
| 311 | CAIRO_CONTENT_ALPHA, |
| 312 | extents->width, |
| 313 | extents->height, |
| 314 | NULL((void*)0)); |
| 315 | if (unlikely (mask->status)(__builtin_expect (!!(mask->status), 0))) { |
| 316 | _cairo_traps_fini (&traps); |
| 317 | return status; |
| 318 | } |
| 319 | |
| 320 | src = compositor->pattern_to_surface (mask, NULL((void*)0), FALSE0, |
| 321 | extents, NULL((void*)0), |
| 322 | &src_x, &src_y); |
| 323 | if (unlikely (status = src->status)(__builtin_expect (!!(status = src->status), 0))) |
| 324 | goto error; |
| 325 | |
| 326 | status = compositor->acquire (mask); |
| 327 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 328 | goto error; |
| 329 | |
| 330 | _cairo_boxes_init_from_rectangle (&clear, |
| 331 | 0, 0, |
| 332 | extents->width, |
| 333 | extents->height); |
| 334 | status = compositor->fill_boxes (mask, |
| 335 | CAIRO_OPERATOR_CLEAR, |
| 336 | CAIRO_COLOR_TRANSPARENT_cairo_stock_color (CAIRO_STOCK_TRANSPARENT), |
| 337 | &clear); |
| 338 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 339 | goto error_release; |
| 340 | |
| 341 | status = compositor->composite_traps (mask, CAIRO_OPERATOR_ADD, src, |
| 342 | src_x, src_y, |
| 343 | extents->x, extents->y, |
| 344 | extents, |
| 345 | antialias, &traps); |
| 346 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 347 | goto error_release; |
| 348 | |
| 349 | compositor->release (mask); |
| 350 | *surface = mask; |
| 351 | out: |
| 352 | cairo_surface_destroy_moz_cairo_surface_destroy (src); |
| 353 | _cairo_traps_fini (&traps); |
| 354 | return status; |
| 355 | |
| 356 | error_release: |
| 357 | compositor->release (mask); |
| 358 | error: |
| 359 | cairo_surface_destroy_moz_cairo_surface_destroy (mask); |
| 360 | goto out; |
| 361 | } |
| 362 | |
| 363 | static cairo_surface_t * |
| 364 | traps_get_clip_surface (const cairo_traps_compositor_t *compositor, |
| 365 | const cairo_composite_rectangles_t *composite, |
| 366 | const cairo_rectangle_int_t *extents) |
| 367 | { |
| 368 | cairo_surface_t *surface = NULL((void*)0); |
| 369 | cairo_int_status_t status; |
| 370 | |
| 371 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 372 | |
| 373 | status = __clip_to_surface (compositor, composite, extents, &surface); |
| 374 | if (status == CAIRO_INT_STATUS_UNSUPPORTED) { |
| 375 | surface = _cairo_surface_create_scratch (composite->surface, |
| 376 | CAIRO_CONTENT_ALPHA, |
| 377 | extents->width, |
| 378 | extents->height, |
| 379 | CAIRO_COLOR_WHITE_cairo_stock_color (CAIRO_STOCK_WHITE)); |
| 380 | if (unlikely (surface->status)(__builtin_expect (!!(surface->status), 0))) |
| 381 | return surface; |
| 382 | |
| 383 | status = _cairo_clip_combine_with_surface (composite->clip, surface, |
| 384 | extents->x, extents->y); |
| 385 | } |
| 386 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 387 | cairo_surface_destroy_moz_cairo_surface_destroy (surface); |
| 388 | surface = _cairo_surface_create_in_error (status); |
| 389 | } |
| 390 | |
| 391 | return surface; |
| 392 | } |
| 393 | |
| 394 | static void blt_unaligned_boxes(const cairo_traps_compositor_t *compositor, |
| 395 | cairo_surface_t *surface, |
| 396 | int dx, int dy, |
| 397 | cairo_box_t *boxes, |
| 398 | int num_boxes) |
| 399 | { |
| 400 | struct blt_in info; |
| 401 | int i; |
| 402 | |
| 403 | info.compositor = compositor; |
| 404 | info.dst = surface; |
| 405 | _cairo_boxes_init (&info.boxes); |
| 406 | info.boxes.num_boxes = 1; |
| 407 | for (i = 0; i < num_boxes; i++) { |
| 408 | cairo_box_t *b = &boxes[i]; |
| 409 | |
| 410 | if (! _cairo_fixed_is_integer (b->p1.x) || |
| 411 | ! _cairo_fixed_is_integer (b->p1.y) || |
| 412 | ! _cairo_fixed_is_integer (b->p2.x) || |
| 413 | ! _cairo_fixed_is_integer (b->p2.y)) |
| 414 | { |
| 415 | do_unaligned_box(blt_in, &info, b, dx, dy); |
| 416 | } |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | static cairo_surface_t * |
| 421 | create_composite_mask (const cairo_traps_compositor_t *compositor, |
| 422 | cairo_surface_t *dst, |
| 423 | void *draw_closure, |
| 424 | draw_func_t draw_func, |
| 425 | draw_func_t mask_func, |
| 426 | const cairo_composite_rectangles_t *extents) |
| 427 | { |
| 428 | cairo_surface_t *surface, *src; |
| 429 | cairo_int_status_t status; |
| 430 | int src_x, src_y; |
| 431 | |
| 432 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 433 | |
| 434 | surface = _cairo_surface_create_scratch (dst, CAIRO_CONTENT_ALPHA, |
| 435 | extents->bounded.width, |
| 436 | extents->bounded.height, |
| 437 | NULL((void*)0)); |
| 438 | if (unlikely (surface->status)(__builtin_expect (!!(surface->status), 0))) |
| 439 | return surface; |
| 440 | |
| 441 | src = compositor->pattern_to_surface (surface, |
| 442 | &_cairo_pattern_white.base, |
| 443 | FALSE0, |
| 444 | &extents->bounded, |
| 445 | &extents->bounded, |
| 446 | &src_x, &src_y); |
| 447 | if (unlikely (src->status)(__builtin_expect (!!(src->status), 0))) { |
| 448 | cairo_surface_destroy_moz_cairo_surface_destroy (surface); |
| 449 | return src; |
| 450 | } |
| 451 | |
| 452 | status = compositor->acquire (surface); |
| 453 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 454 | cairo_surface_destroy_moz_cairo_surface_destroy (src); |
| 455 | cairo_surface_destroy_moz_cairo_surface_destroy (surface); |
| 456 | return _cairo_surface_create_in_error (status); |
| 457 | } |
| 458 | |
| 459 | if (!surface->is_clear) { |
| 460 | cairo_boxes_t clear; |
| 461 | |
| 462 | _cairo_boxes_init_from_rectangle (&clear, |
| 463 | 0, 0, |
| 464 | extents->bounded.width, |
| 465 | extents->bounded.height); |
| 466 | status = compositor->fill_boxes (surface, |
| 467 | CAIRO_OPERATOR_CLEAR, |
| 468 | CAIRO_COLOR_TRANSPARENT_cairo_stock_color (CAIRO_STOCK_TRANSPARENT), |
| 469 | &clear); |
| 470 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 471 | goto error; |
| 472 | |
| 473 | surface->is_clear = TRUE1; |
| 474 | } |
| 475 | |
| 476 | if (mask_func) { |
| 477 | status = mask_func (compositor, surface, draw_closure, |
| 478 | CAIRO_OPERATOR_SOURCE, src, src_x, src_y, |
| 479 | extents->bounded.x, extents->bounded.y, |
| 480 | &extents->bounded, extents->clip); |
| 481 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) { |
| 482 | surface->is_clear = FALSE0; |
| 483 | goto out; |
| 484 | } |
| 485 | if (unlikely (status != CAIRO_INT_STATUS_UNSUPPORTED)(__builtin_expect (!!(status != CAIRO_INT_STATUS_UNSUPPORTED) , 0))) |
| 486 | goto error; |
| 487 | } |
| 488 | |
| 489 | /* Is it worth setting the clip region here? */ |
| 490 | status = draw_func (compositor, surface, draw_closure, |
| 491 | CAIRO_OPERATOR_ADD, src, src_x, src_y, |
| 492 | extents->bounded.x, extents->bounded.y, |
| 493 | &extents->bounded, NULL((void*)0)); |
| 494 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 495 | goto error; |
| 496 | |
| 497 | surface->is_clear = FALSE0; |
| 498 | if (extents->clip->path != NULL((void*)0)) { |
| 499 | status = combine_clip_as_traps (compositor, surface, |
| 500 | extents->clip, &extents->bounded); |
| 501 | if (status == CAIRO_INT_STATUS_UNSUPPORTED) { |
| 502 | status = _cairo_clip_combine_with_surface (extents->clip, surface, |
| 503 | extents->bounded.x, |
| 504 | extents->bounded.y); |
| 505 | } |
| 506 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 507 | goto error; |
| 508 | } else if (extents->clip->boxes) { |
| 509 | blt_unaligned_boxes(compositor, surface, |
| 510 | extents->bounded.x, extents->bounded.y, |
| 511 | extents->clip->boxes, extents->clip->num_boxes); |
| 512 | |
| 513 | } |
| 514 | |
| 515 | out: |
| 516 | compositor->release (surface); |
| 517 | cairo_surface_destroy_moz_cairo_surface_destroy (src); |
| 518 | return surface; |
| 519 | |
| 520 | error: |
| 521 | compositor->release (surface); |
| 522 | if (status != CAIRO_INT_STATUS_NOTHING_TO_DO) { |
| 523 | cairo_surface_destroy_moz_cairo_surface_destroy (surface); |
| 524 | surface = _cairo_surface_create_in_error (status); |
| 525 | } |
| 526 | cairo_surface_destroy_moz_cairo_surface_destroy (src); |
| 527 | return surface; |
| 528 | } |
| 529 | |
| 530 | /* Handles compositing with a clip surface when the operator allows |
| 531 | * us to combine the clip with the mask |
| 532 | */ |
| 533 | static cairo_status_t |
| 534 | clip_and_composite_with_mask (const cairo_traps_compositor_t *compositor, |
| 535 | const cairo_composite_rectangles_t*extents, |
| 536 | draw_func_t draw_func, |
| 537 | draw_func_t mask_func, |
| 538 | void *draw_closure, |
| 539 | cairo_operator_t op, |
| 540 | cairo_surface_t *src, |
| 541 | int src_x, int src_y) |
| 542 | { |
| 543 | cairo_surface_t *dst = extents->surface; |
| 544 | cairo_surface_t *mask; |
| 545 | |
| 546 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 547 | |
| 548 | mask = create_composite_mask (compositor, dst, draw_closure, |
| 549 | draw_func, mask_func, |
| 550 | extents); |
| 551 | if (unlikely (mask->status)(__builtin_expect (!!(mask->status), 0))) |
| 552 | return mask->status; |
| 553 | |
| 554 | if (mask->is_clear) |
| 555 | goto skip; |
| 556 | |
| 557 | if (src != NULL((void*)0) || dst->content != CAIRO_CONTENT_ALPHA) { |
| 558 | compositor->composite (dst, op, src, mask, |
| 559 | extents->bounded.x + src_x, |
| 560 | extents->bounded.y + src_y, |
| 561 | 0, 0, |
| 562 | extents->bounded.x, extents->bounded.y, |
| 563 | extents->bounded.width, extents->bounded.height); |
| 564 | } else { |
| 565 | compositor->composite (dst, op, mask, NULL((void*)0), |
| 566 | 0, 0, |
| 567 | 0, 0, |
| 568 | extents->bounded.x, extents->bounded.y, |
| 569 | extents->bounded.width, extents->bounded.height); |
| 570 | } |
| 571 | |
| 572 | skip: |
| 573 | cairo_surface_destroy_moz_cairo_surface_destroy (mask); |
| 574 | return CAIRO_STATUS_SUCCESS; |
| 575 | } |
| 576 | |
| 577 | /* Handles compositing with a clip surface when we have to do the operation |
| 578 | * in two pieces and combine them together. |
| 579 | */ |
| 580 | static cairo_status_t |
| 581 | clip_and_composite_combine (const cairo_traps_compositor_t *compositor, |
| 582 | const cairo_composite_rectangles_t*extents, |
| 583 | draw_func_t draw_func, |
| 584 | void *draw_closure, |
| 585 | cairo_operator_t op, |
| 586 | cairo_surface_t *src, |
| 587 | int src_x, int src_y) |
| 588 | { |
| 589 | cairo_surface_t *dst = extents->surface; |
| 590 | cairo_surface_t *tmp, *clip; |
| 591 | cairo_status_t status; |
| 592 | |
| 593 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 594 | |
| 595 | tmp = _cairo_surface_create_scratch (dst, dst->content, |
| 596 | extents->bounded.width, |
| 597 | extents->bounded.height, |
| 598 | NULL((void*)0)); |
| 599 | if (unlikely (tmp->status)(__builtin_expect (!!(tmp->status), 0))) |
| 600 | return tmp->status; |
| 601 | |
| 602 | status = compositor->acquire (tmp); |
| 603 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 604 | cairo_surface_destroy_moz_cairo_surface_destroy (tmp); |
| 605 | return status; |
| 606 | } |
| 607 | |
| 608 | compositor->composite (tmp, |
| 609 | dst->is_clear ? CAIRO_OPERATOR_CLEAR : CAIRO_OPERATOR_SOURCE, |
| 610 | dst, NULL((void*)0), |
| 611 | extents->bounded.x, extents->bounded.y, |
| 612 | 0, 0, |
| 613 | 0, 0, |
| 614 | extents->bounded.width, extents->bounded.height); |
| 615 | |
| 616 | status = draw_func (compositor, tmp, draw_closure, op, |
| 617 | src, src_x, src_y, |
| 618 | extents->bounded.x, extents->bounded.y, |
| 619 | &extents->bounded, NULL((void*)0)); |
| 620 | |
| 621 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 622 | goto cleanup; |
| 623 | |
| 624 | clip = traps_get_clip_surface (compositor, extents, &extents->bounded); |
| 625 | if (unlikely ((status = clip->status))(__builtin_expect (!!((status = clip->status)), 0))) |
| 626 | goto cleanup; |
| 627 | |
| 628 | if (dst->is_clear) { |
| 629 | compositor->composite (dst, CAIRO_OPERATOR_SOURCE, tmp, clip, |
| 630 | 0, 0, |
| 631 | 0, 0, |
| 632 | extents->bounded.x, extents->bounded.y, |
| 633 | extents->bounded.width, extents->bounded.height); |
| 634 | } else { |
| 635 | compositor->lerp (dst, tmp, clip, |
| 636 | 0, 0, |
| 637 | 0,0, |
| 638 | extents->bounded.x, extents->bounded.y, |
| 639 | extents->bounded.width, extents->bounded.height); |
| 640 | } |
| 641 | cairo_surface_destroy_moz_cairo_surface_destroy (clip); |
| 642 | |
| 643 | cleanup: |
| 644 | compositor->release (tmp); |
| 645 | cairo_surface_destroy_moz_cairo_surface_destroy (tmp); |
| 646 | |
| 647 | return status; |
| 648 | } |
| 649 | |
| 650 | /* Handles compositing for %CAIRO_OPERATOR_SOURCE, which is special; it's |
| 651 | * defined as (src IN mask IN clip) ADD (dst OUT (mask IN clip)) |
| 652 | */ |
| 653 | static cairo_status_t |
| 654 | clip_and_composite_source (const cairo_traps_compositor_t *compositor, |
| 655 | cairo_surface_t *dst, |
| 656 | draw_func_t draw_func, |
| 657 | draw_func_t mask_func, |
| 658 | void *draw_closure, |
| 659 | cairo_surface_t *src, |
| 660 | int src_x, |
| 661 | int src_y, |
| 662 | const cairo_composite_rectangles_t *extents) |
| 663 | { |
| 664 | cairo_surface_t *mask; |
| 665 | |
| 666 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 667 | |
| 668 | /* Create a surface that is mask IN clip */ |
| 669 | mask = create_composite_mask (compositor, dst, draw_closure, |
| 670 | draw_func, mask_func, |
| 671 | extents); |
| 672 | if (unlikely (mask->status)(__builtin_expect (!!(mask->status), 0))) |
| 673 | return mask->status; |
| 674 | |
| 675 | if (mask->is_clear) |
| 676 | goto skip; |
| 677 | |
| 678 | if (dst->is_clear) { |
| 679 | compositor->composite (dst, CAIRO_OPERATOR_SOURCE, src, mask, |
| 680 | extents->bounded.x + src_x, extents->bounded.y + src_y, |
| 681 | 0, 0, |
| 682 | extents->bounded.x, extents->bounded.y, |
| 683 | extents->bounded.width, extents->bounded.height); |
| 684 | } else { |
| 685 | compositor->lerp (dst, src, mask, |
| 686 | extents->bounded.x + src_x, extents->bounded.y + src_y, |
| 687 | 0, 0, |
| 688 | extents->bounded.x, extents->bounded.y, |
| 689 | extents->bounded.width, extents->bounded.height); |
| 690 | } |
| 691 | |
| 692 | skip: |
| 693 | cairo_surface_destroy_moz_cairo_surface_destroy (mask); |
| 694 | |
| 695 | return CAIRO_STATUS_SUCCESS; |
| 696 | } |
| 697 | |
| 698 | static cairo_bool_t |
| 699 | can_reduce_alpha_op (cairo_operator_t op) |
| 700 | { |
| 701 | int iop = op; |
| 702 | switch (iop) { |
| 703 | case CAIRO_OPERATOR_OVER: |
| 704 | case CAIRO_OPERATOR_SOURCE: |
| 705 | case CAIRO_OPERATOR_ADD: |
| 706 | return TRUE1; |
| 707 | default: |
| 708 | return FALSE0; |
| 709 | } |
| 710 | } |
| 711 | |
| 712 | static cairo_bool_t |
| 713 | reduce_alpha_op (cairo_composite_rectangles_t *extents) |
| 714 | { |
| 715 | cairo_surface_t *dst = extents->surface; |
| 716 | cairo_operator_t op = extents->op; |
| 717 | const cairo_pattern_t *pattern = &extents->source_pattern.base; |
| 718 | return dst->is_clear && |
| 719 | dst->content == CAIRO_CONTENT_ALPHA && |
| 720 | _cairo_pattern_is_opaque_solid (pattern) && |
| 721 | can_reduce_alpha_op (op); |
| 722 | } |
| 723 | |
| 724 | static cairo_status_t |
| 725 | fixup_unbounded_with_mask (const cairo_traps_compositor_t *compositor, |
| 726 | const cairo_composite_rectangles_t *extents) |
| 727 | { |
| 728 | cairo_surface_t *dst = extents->surface; |
| 729 | cairo_surface_t *mask; |
| 730 | |
| 731 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 732 | |
| 733 | /* XXX can we avoid querying the clip surface again? */ |
| 734 | mask = traps_get_clip_surface (compositor, extents, &extents->unbounded); |
| 735 | if (unlikely (mask->status)(__builtin_expect (!!(mask->status), 0))) |
| 736 | return mask->status; |
| 737 | |
| 738 | /* top */ |
| 739 | if (extents->bounded.y != extents->unbounded.y) { |
| 740 | int x = extents->unbounded.x; |
| 741 | int y = extents->unbounded.y; |
| 742 | int width = extents->unbounded.width; |
| 743 | int height = extents->bounded.y - y; |
| 744 | |
| 745 | compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL((void*)0), |
| 746 | 0, 0, |
| 747 | 0, 0, |
| 748 | x, y, |
| 749 | width, height); |
| 750 | } |
| 751 | |
| 752 | /* left */ |
| 753 | if (extents->bounded.x != extents->unbounded.x) { |
| 754 | int x = extents->unbounded.x; |
| 755 | int y = extents->bounded.y; |
| 756 | int width = extents->bounded.x - x; |
| 757 | int height = extents->bounded.height; |
| 758 | |
| 759 | compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL((void*)0), |
| 760 | 0, y - extents->unbounded.y, |
| 761 | 0, 0, |
| 762 | x, y, |
| 763 | width, height); |
| 764 | } |
| 765 | |
| 766 | /* right */ |
| 767 | if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) { |
| 768 | int x = extents->bounded.x + extents->bounded.width; |
| 769 | int y = extents->bounded.y; |
| 770 | int width = extents->unbounded.x + extents->unbounded.width - x; |
| 771 | int height = extents->bounded.height; |
| 772 | |
| 773 | compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL((void*)0), |
| 774 | x - extents->unbounded.x, y - extents->unbounded.y, |
| 775 | 0, 0, |
| 776 | x, y, |
| 777 | width, height); |
| 778 | } |
| 779 | |
| 780 | /* bottom */ |
| 781 | if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) { |
| 782 | int x = extents->unbounded.x; |
| 783 | int y = extents->bounded.y + extents->bounded.height; |
| 784 | int width = extents->unbounded.width; |
| 785 | int height = extents->unbounded.y + extents->unbounded.height - y; |
| 786 | |
| 787 | compositor->composite (dst, CAIRO_OPERATOR_DEST_OUT, mask, NULL((void*)0), |
| 788 | 0, y - extents->unbounded.y, |
| 789 | 0, 0, |
| 790 | x, y, |
| 791 | width, height); |
| 792 | } |
| 793 | |
| 794 | cairo_surface_destroy_moz_cairo_surface_destroy (mask); |
| 795 | |
| 796 | return CAIRO_STATUS_SUCCESS; |
| 797 | } |
| 798 | |
| 799 | static void |
| 800 | add_rect (cairo_boxes_t *boxes, int x1, int y1, int x2, int y2) |
| 801 | { |
| 802 | cairo_box_t box; |
| 803 | cairo_int_status_t status; |
| 804 | |
| 805 | box.p1.x = _cairo_fixed_from_int (x1); |
| 806 | box.p1.y = _cairo_fixed_from_int (y1); |
| 807 | box.p2.x = _cairo_fixed_from_int (x2); |
| 808 | box.p2.y = _cairo_fixed_from_int (y2); |
| 809 | |
| 810 | status = _cairo_boxes_add (boxes, CAIRO_ANTIALIAS_DEFAULT, &box); |
| 811 | assert (status == CAIRO_INT_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_INT_STATUS_SUCCESS) ? 1 : 0) , __extension__ ({ if (status == CAIRO_INT_STATUS_SUCCESS) ; else __assert_fail ("status == CAIRO_INT_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-traps-compositor.c" , 811, __extension__ __PRETTY_FUNCTION__); })); |
| 812 | } |
| 813 | |
| 814 | static cairo_status_t |
| 815 | fixup_unbounded (const cairo_traps_compositor_t *compositor, |
| 816 | cairo_composite_rectangles_t *extents, |
| 817 | cairo_boxes_t *boxes) |
| 818 | { |
| 819 | cairo_surface_t *dst = extents->surface; |
| 820 | cairo_boxes_t clear, tmp; |
| 821 | cairo_box_t box; |
| 822 | cairo_int_status_t status; |
| 823 | |
| 824 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 825 | |
| 826 | if (extents->bounded.width == extents->unbounded.width && |
| 827 | extents->bounded.height == extents->unbounded.height) |
| 828 | { |
| 829 | return CAIRO_STATUS_SUCCESS; |
| 830 | } |
| 831 | |
| 832 | assert (extents->clip->path == NULL)((void) sizeof ((extents->clip->path == ((void*)0)) ? 1 : 0), __extension__ ({ if (extents->clip->path == ((void *)0)) ; else __assert_fail ("extents->clip->path == NULL" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-traps-compositor.c" , 832, __extension__ __PRETTY_FUNCTION__); })); |
| 833 | |
| 834 | /* subtract the drawn boxes from the unbounded area */ |
| 835 | _cairo_boxes_init (&clear); |
| 836 | |
| 837 | box.p1.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width); |
| 838 | box.p1.y = _cairo_fixed_from_int (extents->unbounded.y); |
| 839 | box.p2.x = _cairo_fixed_from_int (extents->unbounded.x); |
| 840 | box.p2.y = _cairo_fixed_from_int (extents->unbounded.y + extents->unbounded.height); |
| 841 | |
| 842 | if (boxes == NULL((void*)0)) { |
| 843 | if (extents->bounded.width == 0 || extents->bounded.height == 0) { |
| 844 | goto empty; |
| 845 | } else { |
| 846 | /* top */ |
| 847 | if (extents->bounded.y != extents->unbounded.y) { |
| 848 | add_rect (&clear, |
| 849 | extents->unbounded.x, extents->unbounded.y, |
| 850 | extents->unbounded.x + extents->unbounded.width, |
| 851 | extents->bounded.y); |
| 852 | } |
| 853 | /* left */ |
| 854 | if (extents->bounded.x != extents->unbounded.x) { |
| 855 | add_rect (&clear, |
| 856 | extents->unbounded.x, extents->bounded.y, |
| 857 | extents->bounded.x, |
| 858 | extents->bounded.y + extents->bounded.height); |
| 859 | } |
| 860 | /* right */ |
| 861 | if (extents->bounded.x + extents->bounded.width != extents->unbounded.x + extents->unbounded.width) { |
| 862 | add_rect (&clear, |
| 863 | extents->bounded.x + extents->bounded.width, |
| 864 | extents->bounded.y, |
| 865 | extents->unbounded.x + extents->unbounded.width, |
| 866 | extents->bounded.y + extents->bounded.height); |
| 867 | } |
| 868 | /* bottom */ |
| 869 | if (extents->bounded.y + extents->bounded.height != extents->unbounded.y + extents->unbounded.height) { |
| 870 | add_rect (&clear, |
| 871 | extents->unbounded.x, |
| 872 | extents->bounded.y + extents->bounded.height, |
| 873 | extents->unbounded.x + extents->unbounded.width, |
| 874 | extents->unbounded.y + extents->unbounded.height); |
| 875 | } |
| 876 | } |
| 877 | } else if (boxes->num_boxes) { |
| 878 | _cairo_boxes_init (&tmp); |
| 879 | |
| 880 | assert (boxes->is_pixel_aligned)((void) sizeof ((boxes->is_pixel_aligned) ? 1 : 0), __extension__ ({ if (boxes->is_pixel_aligned) ; else __assert_fail ("boxes->is_pixel_aligned" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-traps-compositor.c" , 880, __extension__ __PRETTY_FUNCTION__); })); |
| 881 | |
| 882 | status = _cairo_boxes_add (&tmp, CAIRO_ANTIALIAS_DEFAULT, &box); |
| 883 | assert (status == CAIRO_INT_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_INT_STATUS_SUCCESS) ? 1 : 0) , __extension__ ({ if (status == CAIRO_INT_STATUS_SUCCESS) ; else __assert_fail ("status == CAIRO_INT_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-traps-compositor.c" , 883, __extension__ __PRETTY_FUNCTION__); })); |
| 884 | |
| 885 | tmp.chunks.next = &boxes->chunks; |
| 886 | tmp.num_boxes += boxes->num_boxes; |
| 887 | |
| 888 | status = _cairo_bentley_ottmann_tessellate_boxes (&tmp, |
| 889 | CAIRO_FILL_RULE_WINDING, |
| 890 | &clear); |
| 891 | tmp.chunks.next = NULL((void*)0); |
| 892 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 893 | goto error; |
| 894 | } else { |
| 895 | empty: |
| 896 | box.p1.x = _cairo_fixed_from_int (extents->unbounded.x); |
| 897 | box.p2.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width); |
| 898 | |
| 899 | status = _cairo_boxes_add (&clear, CAIRO_ANTIALIAS_DEFAULT, &box); |
| 900 | assert (status == CAIRO_INT_STATUS_SUCCESS)((void) sizeof ((status == CAIRO_INT_STATUS_SUCCESS) ? 1 : 0) , __extension__ ({ if (status == CAIRO_INT_STATUS_SUCCESS) ; else __assert_fail ("status == CAIRO_INT_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-traps-compositor.c" , 900, __extension__ __PRETTY_FUNCTION__); })); |
| 901 | } |
| 902 | |
| 903 | /* Now intersect with the clip boxes */ |
| 904 | if (extents->clip->num_boxes) { |
| 905 | _cairo_boxes_init_for_array (&tmp, |
| 906 | extents->clip->boxes, |
| 907 | extents->clip->num_boxes); |
| 908 | status = _cairo_boxes_intersect (&clear, &tmp, &clear); |
| 909 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 910 | goto error; |
| 911 | } |
| 912 | |
| 913 | status = compositor->fill_boxes (dst, |
| 914 | CAIRO_OPERATOR_CLEAR, |
| 915 | CAIRO_COLOR_TRANSPARENT_cairo_stock_color (CAIRO_STOCK_TRANSPARENT), |
| 916 | &clear); |
| 917 | |
| 918 | error: |
| 919 | _cairo_boxes_fini (&clear); |
| 920 | return status; |
| 921 | } |
| 922 | |
| 923 | enum { |
| 924 | NEED_CLIP_REGION = 0x1, |
| 925 | NEED_CLIP_SURFACE = 0x2, |
| 926 | FORCE_CLIP_REGION = 0x4, |
| 927 | }; |
| 928 | |
| 929 | static cairo_bool_t |
| 930 | need_bounded_clip (cairo_composite_rectangles_t *extents) |
| 931 | { |
| 932 | unsigned int flags = 0; |
| 933 | |
| 934 | if (extents->clip->num_boxes > 1 || |
| 935 | extents->mask.width > extents->unbounded.width || |
| 936 | extents->mask.height > extents->unbounded.height) |
| 937 | { |
| 938 | flags |= NEED_CLIP_REGION; |
| 939 | } |
| 940 | |
| 941 | if (extents->clip->num_boxes > 1 || |
| 942 | extents->mask.width > extents->bounded.width || |
| 943 | extents->mask.height > extents->bounded.height) |
| 944 | { |
| 945 | flags |= FORCE_CLIP_REGION; |
| 946 | } |
| 947 | |
| 948 | if (! _cairo_clip_is_region (extents->clip)) |
| 949 | flags |= NEED_CLIP_SURFACE; |
| 950 | |
| 951 | return flags; |
| 952 | } |
| 953 | |
| 954 | static cairo_bool_t |
| 955 | need_unbounded_clip (cairo_composite_rectangles_t *extents) |
| 956 | { |
| 957 | unsigned int flags = 0; |
| 958 | if (! extents->is_bounded) { |
| 959 | flags |= NEED_CLIP_REGION; |
| 960 | if (! _cairo_clip_is_region (extents->clip)) |
| 961 | flags |= NEED_CLIP_SURFACE; |
| 962 | } |
| 963 | if (extents->clip->path != NULL((void*)0)) |
| 964 | flags |= NEED_CLIP_SURFACE; |
| 965 | return flags; |
| 966 | } |
| 967 | |
| 968 | static cairo_status_t |
| 969 | clip_and_composite (const cairo_traps_compositor_t *compositor, |
| 970 | cairo_composite_rectangles_t *extents, |
| 971 | draw_func_t draw_func, |
| 972 | draw_func_t mask_func, |
| 973 | void *draw_closure, |
| 974 | unsigned int need_clip) |
| 975 | { |
| 976 | cairo_surface_t *dst = extents->surface; |
| 977 | cairo_operator_t op = extents->op; |
| 978 | cairo_pattern_t *source = &extents->source_pattern.base; |
| 979 | cairo_surface_t *src; |
| 980 | int src_x, src_y; |
| 981 | cairo_region_t *clip_region = NULL((void*)0); |
| 982 | cairo_status_t status = CAIRO_STATUS_SUCCESS; |
| 983 | |
| 984 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 985 | |
| 986 | if (reduce_alpha_op (extents)) { |
| 987 | op = CAIRO_OPERATOR_ADD; |
| 988 | source = NULL((void*)0); |
| 989 | } |
| 990 | |
| 991 | if (op == CAIRO_OPERATOR_CLEAR) { |
| 992 | op = CAIRO_OPERATOR_DEST_OUT; |
| 993 | source = NULL((void*)0); |
| 994 | } |
| 995 | |
| 996 | compositor->acquire (dst); |
| 997 | |
| 998 | if (need_clip & NEED_CLIP_REGION) { |
| 999 | const cairo_rectangle_int_t *limit; |
| 1000 | |
| 1001 | if ((need_clip & FORCE_CLIP_REGION) == 0) |
| 1002 | limit = &extents->unbounded; |
| 1003 | else |
| 1004 | limit = &extents->destination; |
| 1005 | |
| 1006 | clip_region = _cairo_clip_get_region (extents->clip); |
| 1007 | if (clip_region != NULL((void*)0) && |
| 1008 | cairo_region_contains_rectangle_moz_cairo_region_contains_rectangle (clip_region, |
| 1009 | limit) == CAIRO_REGION_OVERLAP_IN) |
| 1010 | clip_region = NULL((void*)0); |
| 1011 | |
| 1012 | if (clip_region != NULL((void*)0)) { |
| 1013 | status = compositor->set_clip_region (dst, clip_region); |
| 1014 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 1015 | compositor->release (dst); |
| 1016 | return status; |
| 1017 | } |
| 1018 | } |
| 1019 | } |
| 1020 | |
| 1021 | if (extents->bounded.width == 0 || extents->bounded.height == 0) |
| 1022 | goto skip; |
| 1023 | |
| 1024 | src = compositor->pattern_to_surface (dst, source, FALSE0, |
| 1025 | &extents->bounded, |
| 1026 | &extents->source_sample_area, |
| 1027 | &src_x, &src_y); |
| 1028 | if (unlikely (status = src->status)(__builtin_expect (!!(status = src->status), 0))) |
| 1029 | goto error; |
| 1030 | |
| 1031 | if (op == CAIRO_OPERATOR_SOURCE) { |
| 1032 | status = clip_and_composite_source (compositor, dst, |
| 1033 | draw_func, mask_func, draw_closure, |
| 1034 | src, src_x, src_y, |
| 1035 | extents); |
| 1036 | } else { |
| 1037 | if (need_clip & NEED_CLIP_SURFACE) { |
| 1038 | if (extents->is_bounded) { |
| 1039 | status = clip_and_composite_with_mask (compositor, extents, |
| 1040 | draw_func, mask_func, |
| 1041 | draw_closure, |
| 1042 | op, src, src_x, src_y); |
| 1043 | } else { |
| 1044 | status = clip_and_composite_combine (compositor, extents, |
| 1045 | draw_func, draw_closure, |
| 1046 | op, src, src_x, src_y); |
| 1047 | } |
| 1048 | } else { |
| 1049 | status = draw_func (compositor, |
| 1050 | dst, draw_closure, |
| 1051 | op, src, src_x, src_y, |
| 1052 | 0, 0, |
| 1053 | &extents->bounded, |
| 1054 | extents->clip); |
| 1055 | } |
| 1056 | } |
| 1057 | cairo_surface_destroy_moz_cairo_surface_destroy (src); |
| 1058 | |
| 1059 | skip: |
| 1060 | if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded) { |
| 1061 | if (need_clip & NEED_CLIP_SURFACE) |
| 1062 | status = fixup_unbounded_with_mask (compositor, extents); |
| 1063 | else |
| 1064 | status = fixup_unbounded (compositor, extents, NULL((void*)0)); |
| 1065 | } |
| 1066 | |
| 1067 | error: |
| 1068 | if (clip_region) |
| 1069 | compositor->set_clip_region (dst, NULL((void*)0)); |
| 1070 | |
| 1071 | compositor->release (dst); |
| 1072 | |
| 1073 | return status; |
| 1074 | } |
| 1075 | |
| 1076 | /* meta-ops */ |
| 1077 | |
| 1078 | typedef struct { |
| 1079 | cairo_traps_t traps; |
| 1080 | cairo_antialias_t antialias; |
| 1081 | } composite_traps_info_t; |
| 1082 | |
| 1083 | static cairo_int_status_t |
| 1084 | composite_traps (const cairo_traps_compositor_t *compositor, |
| 1085 | cairo_surface_t *dst, |
| 1086 | void *closure, |
| 1087 | cairo_operator_t op, |
| 1088 | cairo_surface_t *src, |
| 1089 | int src_x, int src_y, |
| 1090 | int dst_x, int dst_y, |
| 1091 | const cairo_rectangle_int_t *extents, |
| 1092 | cairo_clip_t *clip) |
| 1093 | { |
| 1094 | composite_traps_info_t *info = closure; |
| 1095 | |
| 1096 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1097 | |
| 1098 | return compositor->composite_traps (dst, op, src, |
| 1099 | src_x - dst_x, src_y - dst_y, |
| 1100 | dst_x, dst_y, |
| 1101 | extents, |
| 1102 | info->antialias, &info->traps); |
| 1103 | } |
| 1104 | |
| 1105 | typedef struct { |
| 1106 | cairo_tristrip_t strip; |
| 1107 | cairo_antialias_t antialias; |
| 1108 | } composite_tristrip_info_t; |
| 1109 | |
| 1110 | static cairo_int_status_t |
| 1111 | composite_tristrip (const cairo_traps_compositor_t *compositor, |
| 1112 | cairo_surface_t *dst, |
| 1113 | void *closure, |
| 1114 | cairo_operator_t op, |
| 1115 | cairo_surface_t *src, |
| 1116 | int src_x, int src_y, |
| 1117 | int dst_x, int dst_y, |
| 1118 | const cairo_rectangle_int_t *extents, |
| 1119 | cairo_clip_t *clip) |
| 1120 | { |
| 1121 | composite_tristrip_info_t *info = closure; |
| 1122 | |
| 1123 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1124 | |
| 1125 | return compositor->composite_tristrip (dst, op, src, |
| 1126 | src_x - dst_x, src_y - dst_y, |
| 1127 | dst_x, dst_y, |
| 1128 | extents, |
| 1129 | info->antialias, &info->strip); |
| 1130 | } |
| 1131 | |
| 1132 | static cairo_bool_t |
| 1133 | is_recording_pattern (const cairo_pattern_t *pattern) |
| 1134 | { |
| 1135 | cairo_surface_t *surface; |
| 1136 | |
| 1137 | if (pattern->type != CAIRO_PATTERN_TYPE_SURFACE) |
| 1138 | return FALSE0; |
| 1139 | |
| 1140 | surface = ((const cairo_surface_pattern_t *) pattern)->surface; |
| 1141 | surface = _cairo_surface_get_source (surface, NULL((void*)0)); |
| 1142 | return _cairo_surface_is_recording (surface); |
| 1143 | } |
| 1144 | |
| 1145 | static cairo_surface_t * |
| 1146 | recording_pattern_get_surface (const cairo_pattern_t *pattern) |
| 1147 | { |
| 1148 | cairo_surface_t *surface; |
| 1149 | |
| 1150 | surface = ((const cairo_surface_pattern_t *) pattern)->surface; |
| 1151 | return _cairo_surface_get_source (surface, NULL((void*)0)); |
| 1152 | } |
| 1153 | |
| 1154 | static cairo_bool_t |
| 1155 | recording_pattern_contains_sample (const cairo_pattern_t *pattern, |
| 1156 | const cairo_rectangle_int_t *sample) |
| 1157 | { |
| 1158 | cairo_recording_surface_t *surface; |
| 1159 | |
| 1160 | if (! is_recording_pattern (pattern)) |
| 1161 | return FALSE0; |
| 1162 | |
| 1163 | if (pattern->extend == CAIRO_EXTEND_NONE) |
| 1164 | return TRUE1; |
| 1165 | |
| 1166 | surface = (cairo_recording_surface_t *) recording_pattern_get_surface (pattern); |
| 1167 | if (surface->unbounded) |
| 1168 | return TRUE1; |
| 1169 | |
| 1170 | return _cairo_rectangle_contains_rectangle (&surface->extents, sample); |
| 1171 | } |
| 1172 | |
| 1173 | static cairo_bool_t |
| 1174 | op_reduces_to_source (cairo_composite_rectangles_t *extents) |
| 1175 | { |
| 1176 | if (extents->op == CAIRO_OPERATOR_SOURCE) |
| 1177 | return TRUE1; |
| 1178 | |
| 1179 | if (extents->surface->is_clear) |
| 1180 | return extents->op == CAIRO_OPERATOR_OVER || extents->op == CAIRO_OPERATOR_ADD; |
| 1181 | |
| 1182 | return FALSE0; |
| 1183 | } |
| 1184 | |
| 1185 | static cairo_status_t |
| 1186 | composite_aligned_boxes (const cairo_traps_compositor_t *compositor, |
| 1187 | cairo_composite_rectangles_t *extents, |
| 1188 | cairo_boxes_t *boxes) |
| 1189 | { |
| 1190 | cairo_surface_t *dst = extents->surface; |
| 1191 | cairo_operator_t op = extents->op; |
| 1192 | cairo_bool_t need_clip_mask = ! _cairo_clip_is_region (extents->clip); |
| 1193 | cairo_bool_t op_is_source; |
| 1194 | cairo_status_t status; |
| 1195 | |
| 1196 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1197 | |
| 1198 | if (need_clip_mask && |
| 1199 | (! extents->is_bounded || extents->op == CAIRO_OPERATOR_SOURCE)) |
| 1200 | { |
| 1201 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1202 | } |
| 1203 | |
| 1204 | op_is_source = op_reduces_to_source (extents); |
| 1205 | |
| 1206 | /* Are we just copying a recording surface? */ |
| 1207 | if (! need_clip_mask && op_is_source && |
| 1208 | recording_pattern_contains_sample (&extents->source_pattern.base, |
| 1209 | &extents->source_sample_area)) |
| 1210 | { |
| 1211 | cairo_clip_t *recording_clip; |
| 1212 | const cairo_pattern_t *source = &extents->source_pattern.base; |
| 1213 | const cairo_matrix_t *m; |
| 1214 | cairo_matrix_t matrix; |
| 1215 | |
| 1216 | /* XXX could also do tiling repeat modes... */ |
| 1217 | |
| 1218 | /* first clear the area about to be overwritten */ |
| 1219 | if (! dst->is_clear) { |
| 1220 | status = compositor->acquire (dst); |
| 1221 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1222 | return status; |
| 1223 | |
| 1224 | status = compositor->fill_boxes (dst, |
| 1225 | CAIRO_OPERATOR_CLEAR, |
| 1226 | CAIRO_COLOR_TRANSPARENT_cairo_stock_color (CAIRO_STOCK_TRANSPARENT), |
| 1227 | boxes); |
| 1228 | compositor->release (dst); |
| 1229 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1230 | return status; |
| 1231 | } |
| 1232 | |
| 1233 | m = &source->matrix; |
| 1234 | if (_cairo_surface_has_device_transform (dst)) { |
| 1235 | cairo_matrix_multiply_moz_cairo_matrix_multiply (&matrix, |
| 1236 | &source->matrix, |
| 1237 | &dst->device_transform); |
| 1238 | m = &matrix; |
| 1239 | } |
| 1240 | |
| 1241 | recording_clip = _cairo_clip_from_boxes (boxes); |
| 1242 | status = _cairo_recording_surface_replay_with_clip (recording_pattern_get_surface (source), |
| 1243 | m, dst, recording_clip); |
| 1244 | _cairo_clip_destroy (recording_clip); |
| 1245 | |
| 1246 | return status; |
| 1247 | } |
| 1248 | |
| 1249 | status = compositor->acquire (dst); |
| 1250 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1251 | return status; |
| 1252 | |
| 1253 | if (! need_clip_mask && |
| 1254 | (op == CAIRO_OPERATOR_CLEAR || |
| 1255 | extents->source_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID)) |
| 1256 | { |
| 1257 | const cairo_color_t *color; |
| 1258 | |
| 1259 | if (op == CAIRO_OPERATOR_CLEAR) { |
| 1260 | color = CAIRO_COLOR_TRANSPARENT_cairo_stock_color (CAIRO_STOCK_TRANSPARENT); |
| 1261 | } else { |
| 1262 | color = &((cairo_solid_pattern_t *) &extents->source_pattern)->color; |
| 1263 | if (op_is_source) |
| 1264 | op = CAIRO_OPERATOR_SOURCE; |
| 1265 | } |
| 1266 | |
| 1267 | status = compositor->fill_boxes (dst, op, color, boxes); |
| 1268 | } |
| 1269 | else |
| 1270 | { |
| 1271 | cairo_surface_t *src, *mask = NULL((void*)0); |
| 1272 | cairo_pattern_t *source = &extents->source_pattern.base; |
| 1273 | int src_x, src_y; |
| 1274 | int mask_x = 0, mask_y = 0; |
| 1275 | |
| 1276 | if (need_clip_mask) { |
| 1277 | mask = traps_get_clip_surface (compositor, |
| 1278 | extents, &extents->bounded); |
| 1279 | if (unlikely (mask->status)(__builtin_expect (!!(mask->status), 0))) |
| 1280 | return mask->status; |
| 1281 | |
| 1282 | mask_x = -extents->bounded.x; |
| 1283 | mask_y = -extents->bounded.y; |
| 1284 | |
| 1285 | if (op == CAIRO_OPERATOR_CLEAR) { |
| 1286 | source = NULL((void*)0); |
| 1287 | op = CAIRO_OPERATOR_DEST_OUT; |
| 1288 | } |
| 1289 | } else if (op_is_source) |
| 1290 | op = CAIRO_OPERATOR_SOURCE; |
| 1291 | |
| 1292 | src = compositor->pattern_to_surface (dst, source, FALSE0, |
| 1293 | &extents->bounded, |
| 1294 | &extents->source_sample_area, |
| 1295 | &src_x, &src_y); |
| 1296 | if (likely (src->status == CAIRO_STATUS_SUCCESS)(__builtin_expect (!!(src->status == CAIRO_STATUS_SUCCESS) , 1))) { |
| 1297 | status = compositor->composite_boxes (dst, op, src, mask, |
| 1298 | src_x, src_y, |
| 1299 | mask_x, mask_y, |
| 1300 | 0, 0, |
| 1301 | boxes, &extents->bounded); |
| 1302 | cairo_surface_destroy_moz_cairo_surface_destroy (src); |
| 1303 | } else |
| 1304 | status = src->status; |
| 1305 | |
| 1306 | cairo_surface_destroy_moz_cairo_surface_destroy (mask); |
| 1307 | } |
| 1308 | |
| 1309 | if (status == CAIRO_STATUS_SUCCESS && ! extents->is_bounded) |
| 1310 | status = fixup_unbounded (compositor, extents, boxes); |
| 1311 | |
| 1312 | compositor->release (dst); |
| 1313 | |
| 1314 | return status; |
| 1315 | } |
| 1316 | |
| 1317 | static cairo_status_t |
| 1318 | upload_boxes (const cairo_traps_compositor_t *compositor, |
| 1319 | cairo_composite_rectangles_t *extents, |
| 1320 | cairo_boxes_t *boxes) |
| 1321 | { |
| 1322 | cairo_surface_t *dst = extents->surface; |
| 1323 | const cairo_pattern_t *source = &extents->source_pattern.base; |
| 1324 | cairo_surface_t *src; |
| 1325 | cairo_rectangle_int_t limit; |
| 1326 | cairo_int_status_t status; |
| 1327 | int tx, ty; |
| 1328 | |
| 1329 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1330 | |
| 1331 | src = _cairo_pattern_get_source((cairo_surface_pattern_t *)source, |
| 1332 | &limit); |
| 1333 | if (!(src->type == CAIRO_SURFACE_TYPE_IMAGE || src->type == dst->type)) |
| 1334 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1335 | |
| 1336 | if (! _cairo_matrix_is_integer_translation (&source->matrix, &tx, &ty)) |
| 1337 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1338 | |
| 1339 | /* Check that the data is entirely within the image */ |
| 1340 | if (extents->bounded.x + tx < limit.x || extents->bounded.y + ty < limit.y) |
| 1341 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1342 | |
| 1343 | if (extents->bounded.x + extents->bounded.width + tx > limit.x + limit.width || |
| 1344 | extents->bounded.y + extents->bounded.height + ty > limit.y + limit.height) |
| 1345 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1346 | |
| 1347 | tx += limit.x; |
| 1348 | ty += limit.y; |
| 1349 | |
| 1350 | if (src->type == CAIRO_SURFACE_TYPE_IMAGE) |
| 1351 | status = compositor->draw_image_boxes (dst, |
| 1352 | (cairo_image_surface_t *)src, |
| 1353 | boxes, tx, ty); |
| 1354 | else |
| 1355 | status = compositor->copy_boxes (dst, src, boxes, &extents->bounded, |
| 1356 | tx, ty); |
| 1357 | |
| 1358 | return status; |
| 1359 | } |
| 1360 | |
| 1361 | static cairo_int_status_t |
| 1362 | trim_extents_to_traps (cairo_composite_rectangles_t *extents, |
| 1363 | cairo_traps_t *traps) |
| 1364 | { |
| 1365 | cairo_box_t box; |
| 1366 | |
| 1367 | _cairo_traps_extents (traps, &box); |
| 1368 | return _cairo_composite_rectangles_intersect_mask_extents (extents, &box); |
| 1369 | } |
| 1370 | |
| 1371 | static cairo_int_status_t |
| 1372 | trim_extents_to_tristrip (cairo_composite_rectangles_t *extents, |
| 1373 | cairo_tristrip_t *strip) |
| 1374 | { |
| 1375 | cairo_box_t box; |
| 1376 | |
| 1377 | _cairo_tristrip_extents (strip, &box); |
| 1378 | return _cairo_composite_rectangles_intersect_mask_extents (extents, &box); |
| 1379 | } |
| 1380 | |
| 1381 | static cairo_int_status_t |
| 1382 | trim_extents_to_boxes (cairo_composite_rectangles_t *extents, |
| 1383 | cairo_boxes_t *boxes) |
| 1384 | { |
| 1385 | cairo_box_t box; |
| 1386 | |
| 1387 | _cairo_boxes_extents (boxes, &box); |
| 1388 | return _cairo_composite_rectangles_intersect_mask_extents (extents, &box); |
| 1389 | } |
| 1390 | |
| 1391 | static cairo_int_status_t |
| 1392 | boxes_for_traps (cairo_boxes_t *boxes, |
| 1393 | cairo_traps_t *traps, |
| 1394 | cairo_antialias_t antialias) |
| 1395 | { |
| 1396 | int i, j; |
| 1397 | |
| 1398 | /* first check that the traps are rectilinear */ |
| 1399 | if (antialias == CAIRO_ANTIALIAS_NONE) { |
| 1400 | for (i = 0; i < traps->num_traps; i++) { |
| 1401 | const cairo_trapezoid_t *t = &traps->traps[i]; |
| 1402 | if (_cairo_fixed_integer_round_down (t->left.p1.x) != |
| 1403 | _cairo_fixed_integer_round_down (t->left.p2.x) || |
| 1404 | _cairo_fixed_integer_round_down (t->right.p1.x) != |
| 1405 | _cairo_fixed_integer_round_down (t->right.p2.x)) |
| 1406 | { |
| 1407 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1408 | } |
| 1409 | } |
| 1410 | } else { |
| 1411 | for (i = 0; i < traps->num_traps; i++) { |
| 1412 | const cairo_trapezoid_t *t = &traps->traps[i]; |
| 1413 | if (t->left.p1.x != t->left.p2.x || t->right.p1.x != t->right.p2.x) |
| 1414 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1415 | } |
| 1416 | } |
| 1417 | |
| 1418 | _cairo_boxes_init (boxes); |
| 1419 | |
| 1420 | boxes->chunks.base = (cairo_box_t *) traps->traps; |
| 1421 | boxes->chunks.size = traps->num_traps; |
| 1422 | |
| 1423 | if (antialias != CAIRO_ANTIALIAS_NONE) { |
| 1424 | for (i = j = 0; i < traps->num_traps; i++) { |
| 1425 | /* Note the traps and boxes alias so we need to take the local copies first. */ |
| 1426 | cairo_fixed_t x1 = traps->traps[i].left.p1.x; |
| 1427 | cairo_fixed_t x2 = traps->traps[i].right.p1.x; |
| 1428 | cairo_fixed_t y1 = traps->traps[i].top; |
| 1429 | cairo_fixed_t y2 = traps->traps[i].bottom; |
| 1430 | |
| 1431 | if (x1 == x2 || y1 == y2) |
| 1432 | continue; |
| 1433 | |
| 1434 | boxes->chunks.base[j].p1.x = x1; |
| 1435 | boxes->chunks.base[j].p1.y = y1; |
| 1436 | boxes->chunks.base[j].p2.x = x2; |
| 1437 | boxes->chunks.base[j].p2.y = y2; |
| 1438 | j++; |
| 1439 | |
| 1440 | if (boxes->is_pixel_aligned) { |
| 1441 | boxes->is_pixel_aligned = |
| 1442 | _cairo_fixed_is_integer (x1) && _cairo_fixed_is_integer (y1) && |
| 1443 | _cairo_fixed_is_integer (x2) && _cairo_fixed_is_integer (y2); |
| 1444 | } |
| 1445 | } |
| 1446 | } else { |
| 1447 | boxes->is_pixel_aligned = TRUE1; |
| 1448 | |
| 1449 | for (i = j = 0; i < traps->num_traps; i++) { |
| 1450 | /* Note the traps and boxes alias so we need to take the local copies first. */ |
| 1451 | cairo_fixed_t x1 = traps->traps[i].left.p1.x; |
| 1452 | cairo_fixed_t x2 = traps->traps[i].right.p1.x; |
| 1453 | cairo_fixed_t y1 = traps->traps[i].top; |
| 1454 | cairo_fixed_t y2 = traps->traps[i].bottom; |
| 1455 | |
| 1456 | /* round down here to match Pixman's behavior when using traps. */ |
| 1457 | boxes->chunks.base[j].p1.x = _cairo_fixed_round_down (x1); |
| 1458 | boxes->chunks.base[j].p1.y = _cairo_fixed_round_down (y1); |
| 1459 | boxes->chunks.base[j].p2.x = _cairo_fixed_round_down (x2); |
| 1460 | boxes->chunks.base[j].p2.y = _cairo_fixed_round_down (y2); |
| 1461 | j += (boxes->chunks.base[j].p1.x != boxes->chunks.base[j].p2.x && |
| 1462 | boxes->chunks.base[j].p1.y != boxes->chunks.base[j].p2.y); |
| 1463 | } |
| 1464 | } |
| 1465 | boxes->chunks.count = j; |
| 1466 | boxes->num_boxes = j; |
| 1467 | |
| 1468 | return CAIRO_INT_STATUS_SUCCESS; |
| 1469 | } |
| 1470 | |
| 1471 | static cairo_status_t |
| 1472 | clip_and_composite_boxes (const cairo_traps_compositor_t *compositor, |
| 1473 | cairo_composite_rectangles_t *extents, |
| 1474 | cairo_boxes_t *boxes); |
| 1475 | |
| 1476 | static cairo_status_t |
| 1477 | clip_and_composite_polygon (const cairo_traps_compositor_t *compositor, |
| 1478 | cairo_composite_rectangles_t *extents, |
| 1479 | cairo_polygon_t *polygon, |
| 1480 | cairo_antialias_t antialias, |
| 1481 | cairo_fill_rule_t fill_rule, |
| 1482 | cairo_bool_t curvy) |
| 1483 | { |
| 1484 | composite_traps_info_t traps; |
| 1485 | cairo_surface_t *dst = extents->surface; |
| 1486 | cairo_bool_t clip_surface = ! _cairo_clip_is_region (extents->clip); |
| 1487 | cairo_int_status_t status; |
| 1488 | |
| 1489 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1490 | |
| 1491 | if (polygon->num_edges == 0) { |
| 1492 | status = CAIRO_INT_STATUS_SUCCESS; |
| 1493 | |
| 1494 | if (! extents->is_bounded) { |
| 1495 | cairo_region_t *clip_region = _cairo_clip_get_region (extents->clip); |
| 1496 | |
| 1497 | if (clip_region && |
| 1498 | cairo_region_contains_rectangle_moz_cairo_region_contains_rectangle (clip_region, |
| 1499 | &extents->unbounded) == CAIRO_REGION_OVERLAP_IN) |
| 1500 | clip_region = NULL((void*)0); |
| 1501 | |
| 1502 | if (clip_region != NULL((void*)0)) { |
| 1503 | status = compositor->set_clip_region (dst, clip_region); |
| 1504 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1505 | return status; |
| 1506 | } |
| 1507 | |
| 1508 | if (clip_surface) |
| 1509 | status = fixup_unbounded_with_mask (compositor, extents); |
| 1510 | else |
| 1511 | status = fixup_unbounded (compositor, extents, NULL((void*)0)); |
| 1512 | |
| 1513 | if (clip_region != NULL((void*)0)) |
| 1514 | compositor->set_clip_region (dst, NULL((void*)0)); |
| 1515 | } |
| 1516 | |
| 1517 | return status; |
| 1518 | } |
| 1519 | |
| 1520 | if (extents->clip->path != NULL((void*)0) && extents->is_bounded) { |
| 1521 | cairo_polygon_t clipper; |
| 1522 | cairo_fill_rule_t clipper_fill_rule; |
| 1523 | cairo_antialias_t clipper_antialias; |
| 1524 | |
| 1525 | status = _cairo_clip_get_polygon (extents->clip, |
| 1526 | &clipper, |
| 1527 | &clipper_fill_rule, |
| 1528 | &clipper_antialias); |
| 1529 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) { |
| 1530 | if (clipper_antialias == antialias) { |
| 1531 | status = _cairo_polygon_intersect (polygon, fill_rule, |
| 1532 | &clipper, clipper_fill_rule); |
| 1533 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) { |
| 1534 | cairo_clip_t * clip = _cairo_clip_copy_region (extents->clip); |
| 1535 | _cairo_clip_destroy (extents->clip); |
| 1536 | extents->clip = clip; |
| 1537 | |
| 1538 | fill_rule = CAIRO_FILL_RULE_WINDING; |
| 1539 | } |
| 1540 | _cairo_polygon_fini (&clipper); |
| 1541 | } |
| 1542 | } |
| 1543 | } |
| 1544 | |
| 1545 | if (antialias == CAIRO_ANTIALIAS_NONE && curvy) { |
| 1546 | cairo_boxes_t boxes; |
| 1547 | |
| 1548 | _cairo_boxes_init (&boxes); |
| 1549 | status = _cairo_rasterise_polygon_to_boxes (polygon, fill_rule, &boxes); |
| 1550 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) { |
| 1551 | assert (boxes.is_pixel_aligned)((void) sizeof ((boxes.is_pixel_aligned) ? 1 : 0), __extension__ ({ if (boxes.is_pixel_aligned) ; else __assert_fail ("boxes.is_pixel_aligned" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-traps-compositor.c" , 1551, __extension__ __PRETTY_FUNCTION__); })); |
| 1552 | status = clip_and_composite_boxes (compositor, extents, &boxes); |
| 1553 | } |
| 1554 | _cairo_boxes_fini (&boxes); |
| 1555 | if ((status != CAIRO_INT_STATUS_UNSUPPORTED)) |
| 1556 | return status; |
| 1557 | } |
| 1558 | |
| 1559 | _cairo_traps_init (&traps.traps); |
| 1560 | |
| 1561 | if (antialias == CAIRO_ANTIALIAS_NONE && curvy) { |
| 1562 | status = _cairo_rasterise_polygon_to_traps (polygon, fill_rule, antialias, &traps.traps); |
| 1563 | } else { |
| 1564 | status = _cairo_bentley_ottmann_tessellate_polygon (&traps.traps, polygon, fill_rule); |
| 1565 | } |
| 1566 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1567 | goto CLEANUP_TRAPS; |
| 1568 | |
| 1569 | status = trim_extents_to_traps (extents, &traps.traps); |
| 1570 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1571 | goto CLEANUP_TRAPS; |
| 1572 | |
| 1573 | /* Use a fast path if the trapezoids consist of a set of boxes. */ |
| 1574 | status = CAIRO_INT_STATUS_UNSUPPORTED; |
Value stored to 'status' is never read | |
| 1575 | if (1) { |
| 1576 | cairo_boxes_t boxes; |
| 1577 | |
| 1578 | status = boxes_for_traps (&boxes, &traps.traps, antialias); |
| 1579 | if (status == CAIRO_INT_STATUS_SUCCESS) { |
| 1580 | status = clip_and_composite_boxes (compositor, extents, &boxes); |
| 1581 | /* XXX need to reconstruct the traps! */ |
| 1582 | assert (status != CAIRO_INT_STATUS_UNSUPPORTED)((void) sizeof ((status != CAIRO_INT_STATUS_UNSUPPORTED) ? 1 : 0), __extension__ ({ if (status != CAIRO_INT_STATUS_UNSUPPORTED ) ; else __assert_fail ("status != CAIRO_INT_STATUS_UNSUPPORTED" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-traps-compositor.c" , 1582, __extension__ __PRETTY_FUNCTION__); })); |
| 1583 | } |
| 1584 | } |
| 1585 | if (status == CAIRO_INT_STATUS_UNSUPPORTED) { |
| 1586 | /* Otherwise render the trapezoids to a mask and composite in the usual |
| 1587 | * fashion. |
| 1588 | */ |
| 1589 | unsigned int flags = 0; |
| 1590 | |
| 1591 | /* For unbounded operations, the X11 server will estimate the |
| 1592 | * affected rectangle and apply the operation to that. However, |
| 1593 | * there are cases where this is an overestimate (e.g. the |
| 1594 | * clip-fill-{eo,nz}-unbounded test). |
| 1595 | * |
| 1596 | * The clip will trim that overestimate to our expectations. |
| 1597 | */ |
| 1598 | if (! extents->is_bounded) |
| 1599 | flags |= FORCE_CLIP_REGION; |
| 1600 | |
| 1601 | traps.antialias = antialias; |
| 1602 | status = clip_and_composite (compositor, extents, |
| 1603 | composite_traps, NULL((void*)0), &traps, |
| 1604 | need_unbounded_clip (extents) | flags); |
| 1605 | } |
| 1606 | |
| 1607 | CLEANUP_TRAPS: |
| 1608 | _cairo_traps_fini (&traps.traps); |
| 1609 | |
| 1610 | return status; |
| 1611 | } |
| 1612 | |
| 1613 | struct composite_opacity_info { |
| 1614 | const cairo_traps_compositor_t *compositor; |
| 1615 | uint8_t op; |
| 1616 | cairo_surface_t *dst; |
| 1617 | cairo_surface_t *src; |
| 1618 | int src_x, src_y; |
| 1619 | double opacity; |
| 1620 | }; |
| 1621 | |
| 1622 | static void composite_opacity(void *closure, |
| 1623 | int16_t x, int16_t y, |
| 1624 | int16_t w, int16_t h, |
| 1625 | uint16_t coverage) |
| 1626 | { |
| 1627 | struct composite_opacity_info *info = closure; |
| 1628 | const cairo_traps_compositor_t *compositor = info->compositor; |
| 1629 | cairo_surface_t *mask; |
| 1630 | int mask_x, mask_y; |
| 1631 | cairo_color_t color; |
| 1632 | cairo_solid_pattern_t solid; |
| 1633 | |
| 1634 | _cairo_color_init_rgba (&color, 0, 0, 0, info->opacity * coverage); |
| 1635 | _cairo_pattern_init_solid (&solid, &color); |
| 1636 | mask = compositor->pattern_to_surface (info->dst, &solid.base, TRUE1, |
| 1637 | &_cairo_unbounded_rectangle, |
| 1638 | &_cairo_unbounded_rectangle, |
| 1639 | &mask_x, &mask_y); |
| 1640 | if (likely (mask->status == CAIRO_STATUS_SUCCESS)(__builtin_expect (!!(mask->status == CAIRO_STATUS_SUCCESS ), 1))) { |
| 1641 | if (info->src) { |
| 1642 | compositor->composite (info->dst, info->op, info->src, mask, |
| 1643 | x + info->src_x, y + info->src_y, |
| 1644 | mask_x, mask_y, |
| 1645 | x, y, |
| 1646 | w, h); |
| 1647 | } else { |
| 1648 | compositor->composite (info->dst, info->op, mask, NULL((void*)0), |
| 1649 | mask_x, mask_y, |
| 1650 | 0, 0, |
| 1651 | x, y, |
| 1652 | w, h); |
| 1653 | } |
| 1654 | } |
| 1655 | |
| 1656 | cairo_surface_destroy_moz_cairo_surface_destroy (mask); |
| 1657 | } |
| 1658 | |
| 1659 | |
| 1660 | static cairo_int_status_t |
| 1661 | composite_opacity_boxes (const cairo_traps_compositor_t *compositor, |
| 1662 | cairo_surface_t *dst, |
| 1663 | void *closure, |
| 1664 | cairo_operator_t op, |
| 1665 | cairo_surface_t *src, |
| 1666 | int src_x, |
| 1667 | int src_y, |
| 1668 | int dst_x, |
| 1669 | int dst_y, |
| 1670 | const cairo_rectangle_int_t *extents, |
| 1671 | cairo_clip_t *clip) |
| 1672 | { |
| 1673 | const cairo_solid_pattern_t *mask = closure; |
| 1674 | struct composite_opacity_info info; |
| 1675 | int i; |
| 1676 | |
| 1677 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1678 | |
| 1679 | info.compositor = compositor; |
| 1680 | info.op = op; |
| 1681 | info.dst = dst; |
| 1682 | |
| 1683 | info.src = src; |
| 1684 | info.src_x = src_x; |
| 1685 | info.src_y = src_y; |
| 1686 | |
| 1687 | info.opacity = mask->color.alpha / (double) 0xffff; |
| 1688 | |
| 1689 | /* XXX for lots of boxes create a clip region for the fully opaque areas */ |
| 1690 | for (i = 0; i < clip->num_boxes; i++) |
| 1691 | do_unaligned_box(composite_opacity, &info, |
| 1692 | &clip->boxes[i], dst_x, dst_y); |
| 1693 | |
| 1694 | return CAIRO_STATUS_SUCCESS; |
| 1695 | } |
| 1696 | |
| 1697 | static cairo_int_status_t |
| 1698 | composite_boxes (const cairo_traps_compositor_t *compositor, |
| 1699 | cairo_surface_t *dst, |
| 1700 | void *closure, |
| 1701 | cairo_operator_t op, |
| 1702 | cairo_surface_t *src, |
| 1703 | int src_x, |
| 1704 | int src_y, |
| 1705 | int dst_x, |
| 1706 | int dst_y, |
| 1707 | const cairo_rectangle_int_t *extents, |
| 1708 | cairo_clip_t *clip) |
| 1709 | { |
| 1710 | cairo_traps_t traps; |
| 1711 | cairo_status_t status; |
| 1712 | |
| 1713 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1714 | |
| 1715 | status = _cairo_traps_init_boxes (&traps, closure); |
| 1716 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1717 | return status; |
| 1718 | |
| 1719 | status = compositor->composite_traps (dst, op, src, |
| 1720 | src_x - dst_x, src_y - dst_y, |
| 1721 | dst_x, dst_y, |
| 1722 | extents, |
| 1723 | CAIRO_ANTIALIAS_DEFAULT, &traps); |
| 1724 | _cairo_traps_fini (&traps); |
| 1725 | |
| 1726 | return status; |
| 1727 | } |
| 1728 | |
| 1729 | static cairo_status_t |
| 1730 | clip_and_composite_boxes (const cairo_traps_compositor_t *compositor, |
| 1731 | cairo_composite_rectangles_t *extents, |
| 1732 | cairo_boxes_t *boxes) |
| 1733 | { |
| 1734 | cairo_int_status_t status; |
| 1735 | |
| 1736 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1737 | |
| 1738 | if (boxes->num_boxes == 0 && extents->is_bounded) |
| 1739 | return CAIRO_STATUS_SUCCESS; |
| 1740 | |
| 1741 | status = trim_extents_to_boxes (extents, boxes); |
| 1742 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1743 | return status; |
| 1744 | |
| 1745 | if (boxes->is_pixel_aligned && extents->clip->path == NULL((void*)0) && |
| 1746 | extents->source_pattern.base.type == CAIRO_PATTERN_TYPE_SURFACE && |
| 1747 | (op_reduces_to_source (extents) || |
| 1748 | (extents->op == CAIRO_OPERATOR_OVER && |
| 1749 | (extents->source_pattern.surface.surface->content & CAIRO_CONTENT_ALPHA) == 0))) |
| 1750 | { |
| 1751 | status = upload_boxes (compositor, extents, boxes); |
| 1752 | if (status != CAIRO_INT_STATUS_UNSUPPORTED) |
| 1753 | return status; |
| 1754 | } |
| 1755 | |
| 1756 | /* Can we reduce drawing through a clip-mask to simply drawing the clip? */ |
| 1757 | if (extents->clip->path != NULL((void*)0) && extents->is_bounded) { |
| 1758 | cairo_polygon_t polygon; |
| 1759 | cairo_fill_rule_t fill_rule; |
| 1760 | cairo_antialias_t antialias; |
| 1761 | cairo_clip_t *clip; |
| 1762 | |
| 1763 | clip = _cairo_clip_copy (extents->clip); |
| 1764 | clip = _cairo_clip_intersect_boxes (clip, boxes); |
| 1765 | if (_cairo_clip_is_all_clipped (clip)) |
| 1766 | return CAIRO_INT_STATUS_NOTHING_TO_DO; |
| 1767 | |
| 1768 | status = _cairo_clip_get_polygon (clip, &polygon, |
| 1769 | &fill_rule, &antialias); |
| 1770 | _cairo_clip_path_destroy (clip->path); |
| 1771 | clip->path = NULL((void*)0); |
| 1772 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) { |
| 1773 | cairo_clip_t *saved_clip = extents->clip; |
| 1774 | extents->clip = clip; |
| 1775 | |
| 1776 | status = clip_and_composite_polygon (compositor, extents, &polygon, |
| 1777 | antialias, fill_rule, FALSE0); |
| 1778 | |
| 1779 | clip = extents->clip; |
| 1780 | extents->clip = saved_clip; |
| 1781 | |
| 1782 | _cairo_polygon_fini (&polygon); |
| 1783 | } |
| 1784 | _cairo_clip_destroy (clip); |
| 1785 | |
| 1786 | if (status != CAIRO_INT_STATUS_UNSUPPORTED) |
| 1787 | return status; |
| 1788 | } |
| 1789 | |
| 1790 | /* Use a fast path if the boxes are pixel aligned (or nearly aligned!) */ |
| 1791 | if (boxes->is_pixel_aligned) { |
| 1792 | status = composite_aligned_boxes (compositor, extents, boxes); |
| 1793 | if (status != CAIRO_INT_STATUS_UNSUPPORTED) |
| 1794 | return status; |
| 1795 | } |
| 1796 | |
| 1797 | return clip_and_composite (compositor, extents, |
| 1798 | composite_boxes, NULL((void*)0), boxes, |
| 1799 | need_unbounded_clip (extents)); |
| 1800 | } |
| 1801 | |
| 1802 | static cairo_int_status_t |
| 1803 | composite_traps_as_boxes (const cairo_traps_compositor_t *compositor, |
| 1804 | cairo_composite_rectangles_t *extents, |
| 1805 | composite_traps_info_t *info) |
| 1806 | { |
| 1807 | cairo_boxes_t boxes; |
| 1808 | |
| 1809 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1810 | |
| 1811 | if (! _cairo_traps_to_boxes (&info->traps, info->antialias, &boxes)) |
| 1812 | return CAIRO_INT_STATUS_UNSUPPORTED; |
| 1813 | |
| 1814 | return clip_and_composite_boxes (compositor, extents, &boxes); |
| 1815 | } |
| 1816 | |
| 1817 | static cairo_int_status_t |
| 1818 | clip_and_composite_traps (const cairo_traps_compositor_t *compositor, |
| 1819 | cairo_composite_rectangles_t *extents, |
| 1820 | composite_traps_info_t *info, |
| 1821 | unsigned flags) |
| 1822 | { |
| 1823 | cairo_int_status_t status; |
| 1824 | |
| 1825 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1826 | |
| 1827 | status = trim_extents_to_traps (extents, &info->traps); |
| 1828 | if (unlikely (status != CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status != CAIRO_INT_STATUS_SUCCESS), 0) )) |
| 1829 | return status; |
| 1830 | |
| 1831 | status = CAIRO_INT_STATUS_UNSUPPORTED; |
| 1832 | if ((flags & FORCE_CLIP_REGION) == 0) |
| 1833 | status = composite_traps_as_boxes (compositor, extents, info); |
| 1834 | if (status == CAIRO_INT_STATUS_UNSUPPORTED) { |
| 1835 | /* For unbounded operations, the X11 server will estimate the |
| 1836 | * affected rectangle and apply the operation to that. However, |
| 1837 | * there are cases where this is an overestimate (e.g. the |
| 1838 | * clip-fill-{eo,nz}-unbounded test). |
| 1839 | * |
| 1840 | * The clip will trim that overestimate to our expectations. |
| 1841 | */ |
| 1842 | if (! extents->is_bounded) |
| 1843 | flags |= FORCE_CLIP_REGION; |
| 1844 | |
| 1845 | status = clip_and_composite (compositor, extents, |
| 1846 | composite_traps, NULL((void*)0), info, |
| 1847 | need_unbounded_clip (extents) | flags); |
| 1848 | } |
| 1849 | |
| 1850 | return status; |
| 1851 | } |
| 1852 | |
| 1853 | static cairo_int_status_t |
| 1854 | clip_and_composite_tristrip (const cairo_traps_compositor_t *compositor, |
| 1855 | cairo_composite_rectangles_t *extents, |
| 1856 | composite_tristrip_info_t *info) |
| 1857 | { |
| 1858 | cairo_int_status_t status; |
| 1859 | unsigned int flags = 0; |
| 1860 | |
| 1861 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1862 | |
| 1863 | status = trim_extents_to_tristrip (extents, &info->strip); |
| 1864 | if (unlikely (status != CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status != CAIRO_INT_STATUS_SUCCESS), 0) )) |
| 1865 | return status; |
| 1866 | |
| 1867 | if (! extents->is_bounded) |
| 1868 | flags |= FORCE_CLIP_REGION; |
| 1869 | |
| 1870 | status = clip_and_composite (compositor, extents, |
| 1871 | composite_tristrip, NULL((void*)0), info, |
| 1872 | need_unbounded_clip (extents) | flags); |
| 1873 | |
| 1874 | return status; |
| 1875 | } |
| 1876 | |
| 1877 | struct composite_mask { |
| 1878 | cairo_surface_t *mask; |
| 1879 | int mask_x, mask_y; |
| 1880 | }; |
| 1881 | |
| 1882 | static cairo_int_status_t |
| 1883 | composite_mask (const cairo_traps_compositor_t *compositor, |
| 1884 | cairo_surface_t *dst, |
| 1885 | void *closure, |
| 1886 | cairo_operator_t op, |
| 1887 | cairo_surface_t *src, |
| 1888 | int src_x, |
| 1889 | int src_y, |
| 1890 | int dst_x, |
| 1891 | int dst_y, |
| 1892 | const cairo_rectangle_int_t *extents, |
| 1893 | cairo_clip_t *clip) |
| 1894 | { |
| 1895 | struct composite_mask *data = closure; |
| 1896 | |
| 1897 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1898 | |
| 1899 | if (src != NULL((void*)0)) { |
| 1900 | compositor->composite (dst, op, src, data->mask, |
| 1901 | extents->x + src_x, extents->y + src_y, |
| 1902 | extents->x + data->mask_x, extents->y + data->mask_y, |
| 1903 | extents->x - dst_x, extents->y - dst_y, |
| 1904 | extents->width, extents->height); |
| 1905 | } else { |
| 1906 | compositor->composite (dst, op, data->mask, NULL((void*)0), |
| 1907 | extents->x + data->mask_x, extents->y + data->mask_y, |
| 1908 | 0, 0, |
| 1909 | extents->x - dst_x, extents->y - dst_y, |
| 1910 | extents->width, extents->height); |
| 1911 | } |
| 1912 | |
| 1913 | return CAIRO_STATUS_SUCCESS; |
| 1914 | } |
| 1915 | |
| 1916 | struct composite_box_info { |
| 1917 | const cairo_traps_compositor_t *compositor; |
| 1918 | cairo_surface_t *dst; |
| 1919 | cairo_surface_t *src; |
| 1920 | int src_x, src_y; |
| 1921 | uint8_t op; |
| 1922 | }; |
| 1923 | |
| 1924 | static void composite_box(void *closure, |
| 1925 | int16_t x, int16_t y, |
| 1926 | int16_t w, int16_t h, |
| 1927 | uint16_t coverage) |
| 1928 | { |
| 1929 | struct composite_box_info *info = closure; |
| 1930 | const cairo_traps_compositor_t *compositor = info->compositor; |
| 1931 | |
| 1932 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1933 | |
| 1934 | if (! CAIRO_ALPHA_SHORT_IS_OPAQUE (coverage)((coverage) >= 0xff00)) { |
| 1935 | cairo_surface_t *mask; |
| 1936 | cairo_color_t color; |
| 1937 | cairo_solid_pattern_t solid; |
| 1938 | int mask_x, mask_y; |
| 1939 | |
| 1940 | _cairo_color_init_rgba (&color, 0, 0, 0, coverage / (double)0xffff); |
| 1941 | _cairo_pattern_init_solid (&solid, &color); |
| 1942 | |
| 1943 | mask = compositor->pattern_to_surface (info->dst, &solid.base, FALSE0, |
| 1944 | &_cairo_unbounded_rectangle, |
| 1945 | &_cairo_unbounded_rectangle, |
| 1946 | &mask_x, &mask_y); |
| 1947 | |
| 1948 | if (likely (mask->status == CAIRO_STATUS_SUCCESS)(__builtin_expect (!!(mask->status == CAIRO_STATUS_SUCCESS ), 1))) { |
| 1949 | compositor->composite (info->dst, info->op, info->src, mask, |
| 1950 | x + info->src_x, y + info->src_y, |
| 1951 | mask_x, mask_y, |
| 1952 | x, y, |
| 1953 | w, h); |
| 1954 | } |
| 1955 | |
| 1956 | cairo_surface_destroy_moz_cairo_surface_destroy (mask); |
| 1957 | } else { |
| 1958 | compositor->composite (info->dst, info->op, info->src, NULL((void*)0), |
| 1959 | x + info->src_x, y + info->src_y, |
| 1960 | 0, 0, |
| 1961 | x, y, |
| 1962 | w, h); |
| 1963 | } |
| 1964 | } |
| 1965 | |
| 1966 | static cairo_int_status_t |
| 1967 | composite_mask_clip_boxes (const cairo_traps_compositor_t *compositor, |
| 1968 | cairo_surface_t *dst, |
| 1969 | void *closure, |
| 1970 | cairo_operator_t op, |
| 1971 | cairo_surface_t *src, |
| 1972 | int src_x, |
| 1973 | int src_y, |
| 1974 | int dst_x, |
| 1975 | int dst_y, |
| 1976 | const cairo_rectangle_int_t *extents, |
| 1977 | cairo_clip_t *clip) |
| 1978 | { |
| 1979 | struct composite_mask *data = closure; |
| 1980 | struct composite_box_info info; |
| 1981 | int i; |
| 1982 | |
| 1983 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 1984 | |
| 1985 | info.compositor = compositor; |
| 1986 | info.op = CAIRO_OPERATOR_SOURCE; |
| 1987 | info.dst = dst; |
| 1988 | info.src = data->mask; |
| 1989 | info.src_x = data->mask_x; |
| 1990 | info.src_y = data->mask_y; |
| 1991 | |
| 1992 | info.src_x += dst_x; |
| 1993 | info.src_y += dst_y; |
| 1994 | |
| 1995 | for (i = 0; i < clip->num_boxes; i++) |
| 1996 | do_unaligned_box(composite_box, &info, &clip->boxes[i], dst_x, dst_y); |
| 1997 | |
| 1998 | return CAIRO_STATUS_SUCCESS; |
| 1999 | } |
| 2000 | |
| 2001 | static cairo_int_status_t |
| 2002 | composite_mask_clip (const cairo_traps_compositor_t *compositor, |
| 2003 | cairo_surface_t *dst, |
| 2004 | void *closure, |
| 2005 | cairo_operator_t op, |
| 2006 | cairo_surface_t *src, |
| 2007 | int src_x, |
| 2008 | int src_y, |
| 2009 | int dst_x, |
| 2010 | int dst_y, |
| 2011 | const cairo_rectangle_int_t *extents, |
| 2012 | cairo_clip_t *clip) |
| 2013 | { |
| 2014 | struct composite_mask *data = closure; |
| 2015 | cairo_polygon_t polygon; |
| 2016 | cairo_fill_rule_t fill_rule; |
| 2017 | composite_traps_info_t info; |
| 2018 | cairo_status_t status; |
| 2019 | |
| 2020 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 2021 | |
| 2022 | status = _cairo_clip_get_polygon (clip, &polygon, |
| 2023 | &fill_rule, &info.antialias); |
| 2024 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2025 | return status; |
| 2026 | |
| 2027 | _cairo_traps_init (&info.traps); |
| 2028 | status = _cairo_bentley_ottmann_tessellate_polygon (&info.traps, |
| 2029 | &polygon, |
| 2030 | fill_rule); |
| 2031 | _cairo_polygon_fini (&polygon); |
| 2032 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2033 | return status; |
| 2034 | |
| 2035 | status = composite_traps (compositor, dst, &info, |
| 2036 | CAIRO_OPERATOR_SOURCE, |
| 2037 | data->mask, |
| 2038 | data->mask_x + dst_x, data->mask_y + dst_y, |
| 2039 | dst_x, dst_y, |
| 2040 | extents, NULL((void*)0)); |
| 2041 | _cairo_traps_fini (&info.traps); |
| 2042 | |
| 2043 | return status; |
| 2044 | } |
| 2045 | |
| 2046 | /* high-level compositor interface */ |
| 2047 | |
| 2048 | static cairo_int_status_t |
| 2049 | _cairo_traps_compositor_paint (const cairo_compositor_t *_compositor, |
| 2050 | cairo_composite_rectangles_t *extents) |
| 2051 | { |
| 2052 | cairo_traps_compositor_t *compositor = (cairo_traps_compositor_t*)_compositor; |
| 2053 | cairo_boxes_t boxes; |
| 2054 | cairo_int_status_t status; |
| 2055 | |
| 2056 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 2057 | |
| 2058 | status = compositor->check_composite (extents); |
| 2059 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2060 | return status; |
| 2061 | |
| 2062 | _cairo_clip_steal_boxes (extents->clip, &boxes); |
| 2063 | status = clip_and_composite_boxes (compositor, extents, &boxes); |
| 2064 | _cairo_clip_unsteal_boxes (extents->clip, &boxes); |
| 2065 | |
| 2066 | return status; |
| 2067 | } |
| 2068 | |
| 2069 | static cairo_int_status_t |
| 2070 | _cairo_traps_compositor_mask (const cairo_compositor_t *_compositor, |
| 2071 | cairo_composite_rectangles_t *extents) |
| 2072 | { |
| 2073 | const cairo_traps_compositor_t *compositor = (cairo_traps_compositor_t*)_compositor; |
| 2074 | cairo_int_status_t status; |
| 2075 | |
| 2076 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 2077 | |
| 2078 | status = compositor->check_composite (extents); |
| 2079 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2080 | return status; |
| 2081 | |
| 2082 | if (extents->mask_pattern.base.type == CAIRO_PATTERN_TYPE_SOLID && |
| 2083 | extents->clip->path == NULL((void*)0)) { |
| 2084 | status = clip_and_composite (compositor, extents, |
| 2085 | composite_opacity_boxes, |
| 2086 | composite_opacity_boxes, |
| 2087 | &extents->mask_pattern, |
| 2088 | need_unbounded_clip (extents)); |
| 2089 | } else { |
| 2090 | struct composite_mask data; |
| 2091 | |
| 2092 | data.mask = compositor->pattern_to_surface (extents->surface, |
| 2093 | &extents->mask_pattern.base, |
| 2094 | TRUE1, |
| 2095 | &extents->bounded, |
| 2096 | &extents->mask_sample_area, |
| 2097 | &data.mask_x, |
| 2098 | &data.mask_y); |
| 2099 | if (unlikely (data.mask->status)(__builtin_expect (!!(data.mask->status), 0))) |
| 2100 | return data.mask->status; |
| 2101 | |
| 2102 | status = clip_and_composite (compositor, extents, |
| 2103 | composite_mask, |
| 2104 | extents->clip->path ? composite_mask_clip : composite_mask_clip_boxes, |
| 2105 | &data, need_bounded_clip (extents)); |
| 2106 | |
| 2107 | cairo_surface_destroy_moz_cairo_surface_destroy (data.mask); |
| 2108 | } |
| 2109 | |
| 2110 | return status; |
| 2111 | } |
| 2112 | |
| 2113 | static cairo_int_status_t |
| 2114 | _cairo_traps_compositor_stroke (const cairo_compositor_t *_compositor, |
| 2115 | cairo_composite_rectangles_t *extents, |
| 2116 | const cairo_path_fixed_t *path, |
| 2117 | const cairo_stroke_style_t *style, |
| 2118 | const cairo_matrix_t *ctm, |
| 2119 | const cairo_matrix_t *ctm_inverse, |
| 2120 | double tolerance, |
| 2121 | cairo_antialias_t antialias) |
| 2122 | { |
| 2123 | const cairo_traps_compositor_t *compositor = (cairo_traps_compositor_t *)_compositor; |
| 2124 | cairo_int_status_t status; |
| 2125 | |
| 2126 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 2127 | |
| 2128 | status = compositor->check_composite (extents); |
| 2129 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2130 | return status; |
| 2131 | |
| 2132 | status = CAIRO_INT_STATUS_UNSUPPORTED; |
| 2133 | if (_cairo_path_fixed_stroke_is_rectilinear (path)) { |
| 2134 | cairo_boxes_t boxes; |
| 2135 | |
| 2136 | _cairo_boxes_init_with_clip (&boxes, extents->clip); |
| 2137 | status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path, |
| 2138 | style, |
| 2139 | ctm, |
| 2140 | antialias, |
| 2141 | &boxes); |
| 2142 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) |
| 2143 | status = clip_and_composite_boxes (compositor, extents, &boxes); |
| 2144 | _cairo_boxes_fini (&boxes); |
| 2145 | } |
| 2146 | |
| 2147 | if (status == CAIRO_INT_STATUS_UNSUPPORTED && 0 && |
| 2148 | _cairo_clip_is_region (extents->clip)) /* XXX */ |
| 2149 | { |
| 2150 | composite_tristrip_info_t info; |
| 2151 | |
| 2152 | info.antialias = antialias; |
| 2153 | _cairo_tristrip_init_with_clip (&info.strip, extents->clip); |
| 2154 | status = _cairo_path_fixed_stroke_to_tristrip (path, style, |
| 2155 | ctm, ctm_inverse, |
| 2156 | tolerance, |
| 2157 | &info.strip); |
| 2158 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) |
| 2159 | status = clip_and_composite_tristrip (compositor, extents, &info); |
| 2160 | _cairo_tristrip_fini (&info.strip); |
| 2161 | } |
| 2162 | |
| 2163 | if (status == CAIRO_INT_STATUS_UNSUPPORTED && |
| 2164 | path->has_curve_to && antialias == CAIRO_ANTIALIAS_NONE) { |
| 2165 | cairo_polygon_t polygon; |
| 2166 | |
| 2167 | _cairo_polygon_init_with_clip (&polygon, extents->clip); |
| 2168 | status = _cairo_path_fixed_stroke_to_polygon (path, style, |
| 2169 | ctm, ctm_inverse, |
| 2170 | tolerance, |
| 2171 | &polygon); |
| 2172 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) |
| 2173 | status = clip_and_composite_polygon (compositor, |
| 2174 | extents, &polygon, |
| 2175 | CAIRO_ANTIALIAS_NONE, |
| 2176 | CAIRO_FILL_RULE_WINDING, |
| 2177 | TRUE1); |
| 2178 | _cairo_polygon_fini (&polygon); |
| 2179 | } |
| 2180 | |
| 2181 | if (status == CAIRO_INT_STATUS_UNSUPPORTED) { |
| 2182 | cairo_int_status_t (*func) (const cairo_path_fixed_t *path, |
| 2183 | const cairo_stroke_style_t *stroke_style, |
| 2184 | const cairo_matrix_t *ctm, |
| 2185 | const cairo_matrix_t *ctm_inverse, |
| 2186 | double tolerance, |
| 2187 | cairo_traps_t *traps); |
| 2188 | composite_traps_info_t info; |
| 2189 | unsigned flags; |
| 2190 | |
| 2191 | if (antialias == CAIRO_ANTIALIAS_BEST || antialias == CAIRO_ANTIALIAS_GOOD) { |
| 2192 | func = _cairo_path_fixed_stroke_polygon_to_traps; |
| 2193 | flags = 0; |
| 2194 | } else { |
| 2195 | func = _cairo_path_fixed_stroke_to_traps; |
| 2196 | flags = need_bounded_clip (extents) & ~NEED_CLIP_SURFACE; |
| 2197 | } |
| 2198 | |
| 2199 | info.antialias = antialias; |
| 2200 | _cairo_traps_init_with_clip (&info.traps, extents->clip); |
| 2201 | status = func (path, style, ctm, ctm_inverse, tolerance, &info.traps); |
| 2202 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) |
| 2203 | status = clip_and_composite_traps (compositor, extents, &info, flags); |
| 2204 | _cairo_traps_fini (&info.traps); |
| 2205 | } |
| 2206 | |
| 2207 | return status; |
| 2208 | } |
| 2209 | |
| 2210 | static cairo_int_status_t |
| 2211 | _cairo_traps_compositor_fill (const cairo_compositor_t *_compositor, |
| 2212 | cairo_composite_rectangles_t *extents, |
| 2213 | const cairo_path_fixed_t *path, |
| 2214 | cairo_fill_rule_t fill_rule, |
| 2215 | double tolerance, |
| 2216 | cairo_antialias_t antialias) |
| 2217 | { |
| 2218 | const cairo_traps_compositor_t *compositor = (cairo_traps_compositor_t *)_compositor; |
| 2219 | cairo_int_status_t status; |
| 2220 | |
| 2221 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 2222 | |
| 2223 | status = compositor->check_composite (extents); |
| 2224 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2225 | return status; |
| 2226 | |
| 2227 | status = CAIRO_INT_STATUS_UNSUPPORTED; |
| 2228 | if (_cairo_path_fixed_fill_is_rectilinear (path)) { |
| 2229 | cairo_boxes_t boxes; |
| 2230 | |
| 2231 | _cairo_boxes_init_with_clip (&boxes, extents->clip); |
| 2232 | status = _cairo_path_fixed_fill_rectilinear_to_boxes (path, |
| 2233 | fill_rule, |
| 2234 | antialias, |
| 2235 | &boxes); |
| 2236 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) |
| 2237 | status = clip_and_composite_boxes (compositor, extents, &boxes); |
| 2238 | _cairo_boxes_fini (&boxes); |
| 2239 | } |
| 2240 | |
| 2241 | if (status == CAIRO_INT_STATUS_UNSUPPORTED) { |
| 2242 | cairo_polygon_t polygon; |
| 2243 | |
| 2244 | #if 0 |
| 2245 | if (extents->mask.width > extents->unbounded.width || |
| 2246 | extents->mask.height > extents->unbounded.height) |
| 2247 | { |
| 2248 | cairo_box_t limits; |
| 2249 | _cairo_box_from_rectangle (&limits, &extents->unbounded); |
| 2250 | _cairo_polygon_init (&polygon, &limits, 1); |
| 2251 | } |
| 2252 | else |
| 2253 | { |
| 2254 | _cairo_polygon_init (&polygon, NULL((void*)0), 0); |
| 2255 | } |
| 2256 | |
| 2257 | status = _cairo_path_fixed_fill_to_polygon (path, tolerance, &polygon); |
| 2258 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) { |
| 2259 | status = _cairo_polygon_intersect_with_boxes (&polygon, &fill_rule, |
| 2260 | extents->clip->boxes, |
| 2261 | extents->clip->num_boxes); |
| 2262 | } |
| 2263 | #else |
| 2264 | _cairo_polygon_init_with_clip (&polygon, extents->clip); |
| 2265 | status = _cairo_path_fixed_fill_to_polygon (path, tolerance, &polygon); |
| 2266 | #endif |
| 2267 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) { |
| 2268 | status = clip_and_composite_polygon (compositor, extents, &polygon, |
| 2269 | antialias, fill_rule, path->has_curve_to); |
| 2270 | } |
| 2271 | _cairo_polygon_fini (&polygon); |
| 2272 | } |
| 2273 | |
| 2274 | return status; |
| 2275 | } |
| 2276 | |
| 2277 | static cairo_int_status_t |
| 2278 | composite_glyphs (const cairo_traps_compositor_t *compositor, |
| 2279 | cairo_surface_t *dst, |
| 2280 | void *closure, |
| 2281 | cairo_operator_t op, |
| 2282 | cairo_surface_t *src, |
| 2283 | int src_x, int src_y, |
| 2284 | int dst_x, int dst_y, |
| 2285 | const cairo_rectangle_int_t *extents, |
| 2286 | cairo_clip_t *clip) |
| 2287 | { |
| 2288 | cairo_composite_glyphs_info_t *info = closure; |
| 2289 | |
| 2290 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 2291 | |
| 2292 | if (op == CAIRO_OPERATOR_ADD && (dst->content & CAIRO_CONTENT_COLOR) == 0) |
| 2293 | info->use_mask = 0; |
| 2294 | |
| 2295 | return compositor->composite_glyphs (dst, op, src, |
| 2296 | src_x, src_y, |
| 2297 | dst_x, dst_y, |
| 2298 | info); |
| 2299 | } |
| 2300 | |
| 2301 | static cairo_int_status_t |
| 2302 | _cairo_traps_compositor_glyphs (const cairo_compositor_t *_compositor, |
| 2303 | cairo_composite_rectangles_t *extents, |
| 2304 | cairo_scaled_font_t *scaled_font, |
| 2305 | cairo_glyph_t *glyphs, |
| 2306 | int num_glyphs, |
| 2307 | cairo_bool_t overlap) |
| 2308 | { |
| 2309 | const cairo_traps_compositor_t *compositor = (cairo_traps_compositor_t *)_compositor; |
| 2310 | cairo_int_status_t status; |
| 2311 | |
| 2312 | TRACE ((stderr, "%s\n", __FUNCTION__)); |
| 2313 | |
| 2314 | status = compositor->check_composite (extents); |
| 2315 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2316 | return status; |
| 2317 | |
| 2318 | _cairo_scaled_font_freeze_cache (scaled_font); |
| 2319 | status = compositor->check_composite_glyphs (extents, |
| 2320 | scaled_font, glyphs, |
| 2321 | &num_glyphs); |
| 2322 | if (likely (status == CAIRO_INT_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_INT_STATUS_SUCCESS), 1) )) { |
| 2323 | cairo_composite_glyphs_info_t info; |
| 2324 | |
| 2325 | info.font = scaled_font; |
| 2326 | info.glyphs = glyphs; |
| 2327 | info.num_glyphs = num_glyphs; |
| 2328 | info.use_mask = overlap || ! extents->is_bounded; |
| 2329 | info.extents = extents->bounded; |
| 2330 | |
| 2331 | status = clip_and_composite (compositor, extents, |
| 2332 | composite_glyphs, NULL((void*)0), &info, |
| 2333 | need_bounded_clip (extents) | FORCE_CLIP_REGION); |
| 2334 | } |
| 2335 | _cairo_scaled_font_thaw_cache (scaled_font); |
| 2336 | |
| 2337 | return status; |
| 2338 | } |
| 2339 | |
| 2340 | void |
| 2341 | _cairo_traps_compositor_init (cairo_traps_compositor_t *compositor, |
| 2342 | const cairo_compositor_t *delegate) |
| 2343 | { |
| 2344 | compositor->base.delegate = delegate; |
| 2345 | |
| 2346 | compositor->base.paint = _cairo_traps_compositor_paint; |
| 2347 | compositor->base.mask = _cairo_traps_compositor_mask; |
| 2348 | compositor->base.fill = _cairo_traps_compositor_fill; |
| 2349 | compositor->base.stroke = _cairo_traps_compositor_stroke; |
| 2350 | compositor->base.glyphs = _cairo_traps_compositor_glyphs; |
| 2351 | } |