src/compositor.c

   1 /*
   2  * Copyright © 2010-2011 Intel Corporation
   3  * Copyright © 2008-2011 Kristian Høgsberg
   4  * Copyright © 2012 Collabora, Ltd.
   5  *
   6  * Permission to use, copy, modify, distribute, and sell this software and
   7  * its documentation for any purpose is hereby granted without fee, provided
   8  * that the above copyright notice appear in all copies and that both that
   9  * copyright notice and this permission notice appear in supporting
  10  * documentation, and that the name of the copyright holders not be used in
  11  * advertising or publicity pertaining to distribution of the software
  12  * without specific, written prior permission.  The copyright holders make
  13  * no representations about the suitability of this software for any
  14  * purpose.  It is provided "as is" without express or implied warranty.
  15  *
  16  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  17  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  18  * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  19  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  20  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  21  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  22  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  23  */
  24
  25 #define _GNU_SOURCE
  26
  27 #include "config.h"
  28
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <stdlib.h>
  32 #include <stdint.h>
  33 #include <limits.h>
  34 #include <stdarg.h>
  35 #include <assert.h>
  36 #include <sys/ioctl.h>
  37 #include <sys/wait.h>
  38 #include <sys/types.h>
  39 #include <sys/socket.h>
  40 #include <fcntl.h>
  41 #include <unistd.h>
  42 #include <math.h>
  43 #include <linux/input.h>
  44 #include <dlfcn.h>
  45 #include <signal.h>
  46 #include <setjmp.h>
  47 #include <execinfo.h>
  48
  49 #include <wayland-server.h>
  50 #include "compositor.h"
  51
  52 static struct wl_list child_process_list;
  53 static jmp_buf segv_jmp_buf;
  54
  55 static int
  56 sigchld_handler(int signal_number, void *data)
  57 {
  58         struct weston_process *p;
  59         int status;
  60         pid_t pid;
  61
  62         pid = waitpid(-1, &status, WNOHANG);
  63         if (!pid)
  64                 return 1;
  65
  66         wl_list_for_each(p, &child_process_list, link) {
  67                 if (p->pid == pid)
  68                         break;
  69         }
  70
  71         if (&p->link == &child_process_list) {
  72                 fprintf(stderr, "unknown child process exited\n");
  73                 return 1;
  74         }
  75
  76         wl_list_remove(&p->link);
  77         p->cleanup(p, status);
  78
  79         return 1;
  80 }
  81
  82 WL_EXPORT int
  83 weston_output_switch_mode(struct weston_output *output, struct weston_mode *mode)
  84 {
  85         if (!output->switch_mode)
  86                 return -1;
  87
  88         return output->switch_mode(output, mode);
  89 }
  90
  91 WL_EXPORT void
  92 weston_watch_process(struct weston_process *process)
  93 {
  94         wl_list_insert(&child_process_list, &process->link);
  95 }
  96
  97 static void
  98 child_client_exec(int sockfd, const char *path)
  99 {
 100         int clientfd;
 101         char s[32];
 102         sigset_t allsigs;
 103
 104         /* do not give our signal mask to the new process */
 105         sigfillset(&allsigs);
 106         sigprocmask(SIG_UNBLOCK, &allsigs, NULL);
 107
 108         /* Launch clients as the user. */
 109         seteuid(getuid());
 110
 111         /* SOCK_CLOEXEC closes both ends, so we dup the fd to get a
 112          * non-CLOEXEC fd to pass through exec. */
 113         clientfd = dup(sockfd);
 114         if (clientfd == -1) {
 115                 fprintf(stderr, "compositor: dup failed: %m\n");
 116                 return;
 117         }
 118
 119         snprintf(s, sizeof s, "%d", clientfd);
 120         setenv("WAYLAND_SOCKET", s, 1);
 121
 122         if (execl(path, path, NULL) < 0)
 123                 fprintf(stderr, "compositor: executing '%s' failed: %m\n",
 124                         path);
 125 }
 126
 127 WL_EXPORT struct wl_client *
 128 weston_client_launch(struct weston_compositor *compositor,
 129                      struct weston_process *proc,
 130                      const char *path,
 131                      weston_process_cleanup_func_t cleanup)
 132 {
 133         int sv[2];
 134         pid_t pid;
 135         struct wl_client *client;
 136
 137         if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sv) < 0) {
 138                 fprintf(stderr, "weston_client_launch: "
 139                         "socketpair failed while launching '%s': %m\n",
 140                         path);
 141                 return NULL;
 142         }
 143
 144         pid = fork();
 145         if (pid == -1) {
 146                 close(sv[0]);
 147                 close(sv[1]);
 148                 fprintf(stderr,  "weston_client_launch: "
 149                         "fork failed while launching '%s': %m\n", path);
 150                 return NULL;
 151         }
 152
 153         if (pid == 0) {
 154                 child_client_exec(sv[1], path);
 155                 exit(-1);
 156         }
 157
 158         close(sv[1]);
 159
 160         client = wl_client_create(compositor->wl_display, sv[0]);
 161         if (!client) {
 162                 close(sv[0]);
 163                 fprintf(stderr, "weston_client_launch: "
 164                         "wl_client_create failed while launching '%s'.\n",
 165                         path);
 166                 return NULL;
 167         }
 168
 169         proc->pid = pid;
 170         proc->cleanup = cleanup;
 171         weston_watch_process(proc);
 172
 173         return client;
 174 }
 175
 176 static void
 177 surface_handle_buffer_destroy(struct wl_listener *listener, void *data)
 178 {
 179         struct weston_surface *es =
 180                 container_of(listener, struct weston_surface,
 181                              buffer_destroy_listener);
 182
 183         es->buffer = NULL;
 184 }
 185
 186 static const pixman_region32_data_t undef_region_data;
 187
 188 static void
 189 undef_region(pixman_region32_t *region)
 190 {
 191         pixman_region32_fini(region);
 192         region->data = (pixman_region32_data_t *) &undef_region_data;
 193 }
 194
 195 static int
 196 region_is_undefined(pixman_region32_t *region)
 197 {
 198         return region->data == &undef_region_data;
 199 }
 200
 201 static void
 202 empty_region(pixman_region32_t *region)
 203 {
 204         if (!region_is_undefined(region))
 205                 pixman_region32_fini(region);
 206
 207         pixman_region32_init(region);
 208 }
 209
 210 WL_EXPORT struct weston_surface *
 211 weston_surface_create(struct weston_compositor *compositor)
 212 {
 213         struct weston_surface *surface;
 214
 215         surface = calloc(1, sizeof *surface);
 216         if (surface == NULL)
 217                 return NULL;
 218
 219         wl_signal_init(&surface->surface.resource.destroy_signal);
 220
 221         wl_list_init(&surface->link);
 222         wl_list_init(&surface->layer_link);
 223
 224         surface->surface.resource.client = NULL;
 225
 226         surface->compositor = compositor;
 227         surface->image = EGL_NO_IMAGE_KHR;
 228         surface->alpha = 255;
 229         surface->brightness = 255;
 230         surface->saturation = 255;
 231         surface->pitch = 1;
 232
 233         surface->buffer = NULL;
 234         surface->output = NULL;
 235
 236         pixman_region32_init(&surface->damage);
 237         pixman_region32_init(&surface->opaque);
 238         pixman_region32_init(&surface->clip);
 239         undef_region(&surface->input);
 240         pixman_region32_init(&surface->transform.opaque);
 241         wl_list_init(&surface->frame_callback_list);
 242
 243         surface->buffer_destroy_listener.notify =
 244                 surface_handle_buffer_destroy;
 245
 246         wl_list_init(&surface->geometry.transformation_list);
 247         wl_list_insert(&surface->geometry.transformation_list,
 248                        &surface->transform.position.link);
 249         weston_matrix_init(&surface->transform.position.matrix);
 250         pixman_region32_init(&surface->transform.boundingbox);
 251         surface->geometry.dirty = 1;
 252
 253         return surface;
 254 }
 255
 256 WL_EXPORT void
 257 weston_surface_set_color(struct weston_surface *surface,
 258                  GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha)
 259 {
 260         surface->color[0] = red;
 261         surface->color[1] = green;
 262         surface->color[2] = blue;
 263         surface->color[3] = alpha;
 264         surface->shader = &surface->compositor->solid_shader;
 265 }
 266
 267 static void
 268 surface_to_global_float(struct weston_surface *surface,
 269                         GLfloat sx, GLfloat sy, GLfloat *x, GLfloat *y)
 270 {
 271         if (surface->transform.enabled) {
 272                 struct weston_vector v = { { sx, sy, 0.0f, 1.0f } };
 273
 274                 weston_matrix_transform(&surface->transform.matrix, &v);
 275
 276                 if (fabsf(v.f[3]) < 1e-6) {
 277                         fprintf(stderr, "warning: numerical instability in "
 278                                 "weston_surface_to_global(), divisor = %g\n",
 279                                 v.f[3]);
 280                         *x = 0;
 281                         *y = 0;
 282                         return;
 283                 }
 284
 285                 *x = v.f[0] / v.f[3];
 286                 *y = v.f[1] / v.f[3];
 287         } else {
 288                 *x = sx + surface->geometry.x;
 289                 *y = sy + surface->geometry.y;
 290         }
 291 }
 292
 293 WL_EXPORT void
 294 weston_surface_damage_below(struct weston_surface *surface)
 295 {
 296         struct weston_compositor *compositor = surface->compositor;
 297         pixman_region32_t damage;
 298
 299         pixman_region32_init(&damage);
 300         pixman_region32_subtract(&damage, &surface->transform.boundingbox,
 301                                  &surface->clip);
 302         pixman_region32_union(&compositor->damage,
 303                               &compositor->damage, &damage);
 304         pixman_region32_fini(&damage);
 305 }
 306
 307 static void
 308 surface_compute_bbox(struct weston_surface *surface, int32_t sx, int32_t sy,
 309                      int32_t width, int32_t height,
 310                      pixman_region32_t *bbox)
 311 {
 312         GLfloat min_x = HUGE_VALF,  min_y = HUGE_VALF;
 313         GLfloat max_x = -HUGE_VALF, max_y = -HUGE_VALF;
 314         int32_t s[4][2] = {
 315                 { sx,         sy },
 316                 { sx,         sy + height },
 317                 { sx + width, sy },
 318                 { sx + width, sy + height }
 319         };
 320         GLfloat int_x, int_y;
 321         int i;
 322
 323         for (i = 0; i < 4; ++i) {
 324                 GLfloat x, y;
 325                 surface_to_global_float(surface, s[i][0], s[i][1], &x, &y);
 326                 if (x < min_x)
 327                         min_x = x;
 328                 if (x > max_x)
 329                         max_x = x;
 330                 if (y < min_y)
 331                         min_y = y;
 332                 if (y > max_y)
 333                         max_y = y;
 334         }
 335
 336         int_x = floorf(min_x);
 337         int_y = floorf(min_y);
 338         pixman_region32_init_rect(bbox, int_x, int_y,
 339                                   ceilf(max_x) - int_x, ceilf(max_y) - int_y);
 340 }
 341
 342 static void
 343 weston_surface_update_transform_disable(struct weston_surface *surface)
 344 {
 345         surface->transform.enabled = 0;
 346
 347         /* round off fractions when not transformed */
 348         surface->geometry.x = roundf(surface->geometry.x);
 349         surface->geometry.y = roundf(surface->geometry.y);
 350
 351         pixman_region32_init_rect(&surface->transform.boundingbox,
 352                                   surface->geometry.x,
 353                                   surface->geometry.y,
 354                                   surface->geometry.width,
 355                                   surface->geometry.height);
 356
 357         if (surface->alpha == 255) {
 358                 pixman_region32_copy(&surface->transform.opaque,
 359                                      &surface->opaque);
 360                 pixman_region32_translate(&surface->transform.opaque,
 361                                           surface->geometry.x,
 362                                           surface->geometry.y);
 363         }
 364 }
 365
 366 static int
 367 weston_surface_update_transform_enable(struct weston_surface *surface)
 368 {
 369         struct weston_matrix *matrix = &surface->transform.matrix;
 370         struct weston_matrix *inverse = &surface->transform.inverse;
 371         struct weston_transform *tform;
 372
 373         surface->transform.enabled = 1;
 374
 375         /* Otherwise identity matrix, but with x and y translation. */
 376         surface->transform.position.matrix.d[12] = surface->geometry.x;
 377         surface->transform.position.matrix.d[13] = surface->geometry.y;
 378
 379         weston_matrix_init(matrix);
 380         wl_list_for_each(tform, &surface->geometry.transformation_list, link)
 381                 weston_matrix_multiply(matrix, &tform->matrix);
 382
 383         if (weston_matrix_invert(inverse, matrix) < 0) {
 384                 /* Oops, bad total transformation, not invertible */
 385                 fprintf(stderr, "error: weston_surface %p"
 386                         " transformation not invertible.\n", surface);
 387                 return -1;
 388         }
 389
 390         surface_compute_bbox(surface, 0, 0, surface->geometry.width,
 391                              surface->geometry.height,
 392                              &surface->transform.boundingbox);
 393
 394         return 0;
 395 }
 396
 397 WL_EXPORT void
 398 weston_surface_update_transform(struct weston_surface *surface)
 399 {
 400         if (!surface->geometry.dirty)
 401                 return;
 402
 403         surface->geometry.dirty = 0;
 404
 405         weston_surface_damage_below(surface);
 406
 407         pixman_region32_fini(&surface->transform.boundingbox);
 408         pixman_region32_fini(&surface->transform.opaque);
 409         pixman_region32_init(&surface->transform.opaque);
 410
 411         if (region_is_undefined(&surface->input))
 412                 pixman_region32_init_rect(&surface->input, 0, 0,
 413                                           surface->geometry.width,
 414                                           surface->geometry.height);
 415
 416         /* transform.position is always in transformation_list */
 417         if (surface->geometry.transformation_list.next ==
 418             &surface->transform.position.link &&
 419             surface->geometry.transformation_list.prev ==
 420             &surface->transform.position.link) {
 421                 weston_surface_update_transform_disable(surface);
 422         } else {
 423                 if (weston_surface_update_transform_enable(surface) < 0)
 424                         weston_surface_update_transform_disable(surface);
 425         }
 426
 427         /* weston_surface_damage() without update */
 428         pixman_region32_union(&surface->damage, &surface->damage,
 429                               &surface->transform.boundingbox);
 430
 431         if (weston_surface_is_mapped(surface))
 432                 weston_surface_assign_output(surface);
 433
 434         weston_compositor_schedule_repaint(surface->compositor);
 435 }
 436
 437 WL_EXPORT void
 438 weston_surface_to_global_float(struct weston_surface *surface,
 439                                GLfloat sx, GLfloat sy, GLfloat *x, GLfloat *y)
 440 {
 441         weston_surface_update_transform(surface);
 442
 443         surface_to_global_float(surface, sx, sy, x, y);
 444 }
 445
 446 WL_EXPORT void
 447 weston_surface_to_global_fixed(struct weston_surface *surface,
 448                                wl_fixed_t sx, wl_fixed_t sy,
 449                                wl_fixed_t *x, wl_fixed_t *y)
 450 {
 451         GLfloat xf, yf;
 452
 453         weston_surface_to_global_float(surface,
 454                                        wl_fixed_to_double(sx),
 455                                        wl_fixed_to_double(sy),
 456                                        &xf, &yf);
 457         *x = wl_fixed_from_double(xf);
 458         *y = wl_fixed_from_double(yf);
 459 }
 460
 461 WL_EXPORT void
 462 weston_surface_to_global(struct weston_surface *surface,
 463                          int32_t sx, int32_t sy, int32_t *x, int32_t *y)
 464 {
 465         GLfloat xf, yf;
 466
 467         weston_surface_to_global_float(surface, sx, sy, &xf, &yf);
 468         *x = floorf(xf);
 469         *y = floorf(yf);
 470 }
 471
 472 static void
 473 surface_from_global_float(struct weston_surface *surface,
 474                           GLfloat x, GLfloat y, GLfloat *sx, GLfloat *sy)
 475 {
 476         if (surface->transform.enabled) {
 477                 struct weston_vector v = { { x, y, 0.0f, 1.0f } };
 478
 479                 weston_matrix_transform(&surface->transform.inverse, &v);
 480
 481                 if (fabsf(v.f[3]) < 1e-6) {
 482                         fprintf(stderr, "warning: numerical instability in "
 483                                 "weston_surface_from_global(), divisor = %g\n",
 484                                 v.f[3]);
 485                         *sx = 0;
 486                         *sy = 0;
 487                         return;
 488                 }
 489
 490                 *sx = v.f[0] / v.f[3];
 491                 *sy = v.f[1] / v.f[3];
 492         } else {
 493                 *sx = x - surface->geometry.x;
 494                 *sy = y - surface->geometry.y;
 495         }
 496 }
 497
 498 WL_EXPORT void
 499 weston_surface_from_global_fixed(struct weston_surface *surface,
 500                                  wl_fixed_t x, wl_fixed_t y,
 501                                  wl_fixed_t *sx, wl_fixed_t *sy)
 502 {
 503         GLfloat sxf, syf;
 504
 505         weston_surface_update_transform(surface);
 506
 507         surface_from_global_float(surface,
 508                                   wl_fixed_to_double(x),
 509                                   wl_fixed_to_double(y),
 510                                   &sxf, &syf);
 511         *sx = wl_fixed_from_double(sxf);
 512         *sy = wl_fixed_from_double(syf);
 513 }
 514
 515 WL_EXPORT void
 516 weston_surface_from_global(struct weston_surface *surface,
 517                            int32_t x, int32_t y, int32_t *sx, int32_t *sy)
 518 {
 519         GLfloat sxf, syf;
 520
 521         weston_surface_update_transform(surface);
 522
 523         surface_from_global_float(surface, x, y, &sxf, &syf);
 524         *sx = floorf(sxf);
 525         *sy = floorf(syf);
 526 }
 527
 528 static void
 529 weston_surface_damage_rectangle(struct weston_surface *surface,
 530                                 int32_t sx, int32_t sy,
 531                                 int32_t width, int32_t height)
 532 {
 533         weston_surface_update_transform(surface);
 534
 535         if (surface->transform.enabled) {
 536                 pixman_region32_t box;
 537                 surface_compute_bbox(surface, sx, sy, width, height, &box);
 538                 pixman_region32_union(&surface->damage, &surface->damage,
 539                                       &box);
 540                 pixman_region32_fini(&box);
 541         } else {
 542                 pixman_region32_union_rect(&surface->damage, &surface->damage,
 543                                            surface->geometry.x + sx,
 544                                            surface->geometry.y + sy,
 545                                            width, height);
 546         }
 547
 548         weston_compositor_schedule_repaint(surface->compositor);
 549 }
 550
 551 WL_EXPORT void
 552 weston_surface_damage(struct weston_surface *surface)
 553 {
 554         weston_surface_update_transform(surface);
 555
 556         pixman_region32_union(&surface->damage, &surface->damage,
 557                               &surface->transform.boundingbox);
 558
 559         weston_compositor_schedule_repaint(surface->compositor);
 560 }
 561
 562 WL_EXPORT void
 563 weston_surface_configure(struct weston_surface *surface,
 564                          GLfloat x, GLfloat y, int width, int height)
 565 {
 566         surface->geometry.x = x;
 567         surface->geometry.y = y;
 568         surface->geometry.width = width;
 569         surface->geometry.height = height;
 570         surface->geometry.dirty = 1;
 571 }
 572
 573 WL_EXPORT void
 574 weston_surface_set_position(struct weston_surface *surface,
 575                             GLfloat x, GLfloat y)
 576 {
 577         surface->geometry.x = x;
 578         surface->geometry.y = y;
 579         surface->geometry.dirty = 1;
 580 }
 581
 582 WL_EXPORT int
 583 weston_surface_is_mapped(struct weston_surface *surface)
 584 {
 585         if (surface->output)
 586                 return 1;
 587         else
 588                 return 0;
 589 }
 590
 591 WL_EXPORT uint32_t
 592 weston_compositor_get_time(void)
 593 {
 594        struct timeval tv;
 595
 596        gettimeofday(&tv, NULL);
 597
 598        return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 599 }
 600
 601 static struct weston_surface *
 602 weston_compositor_pick_surface(struct weston_compositor *compositor,
 603                                int32_t x, int32_t y, int32_t *sx, int32_t *sy)
 604 {
 605         struct weston_surface *surface;
 606
 607         wl_list_for_each(surface, &compositor->surface_list, link) {
 608                 weston_surface_from_global(surface, x, y, sx, sy);
 609                 if (pixman_region32_contains_point(&surface->input,
 610                                                    *sx, *sy, NULL))
 611                         return surface;
 612         }
 613
 614         return NULL;
 615 }
 616
 617 static void
 618 weston_device_repick(struct wl_input_device *device)
 619 {
 620         struct weston_input_device *wd = (struct weston_input_device *) device;
 621         const struct wl_pointer_grab_interface *interface;
 622         struct weston_surface *surface, *focus;
 623
 624         surface = weston_compositor_pick_surface(wd->compositor,
 625                                                  device->x, device->y,
 626                                                  &device->current_x,
 627                                                  &device->current_y);
 628
 629         if (&surface->surface != device->current) {
 630                 interface = device->pointer_grab->interface;
 631                 interface->focus(device->pointer_grab, &surface->surface,
 632                                  device->current_x, device->current_y);
 633                 device->current = &surface->surface;
 634         }
 635
 636         focus = (struct weston_surface *) device->pointer_grab->focus;
 637         if (focus)
 638                 weston_surface_from_global(focus, device->x, device->y,
 639                                            &device->pointer_grab->x, &device->pointer_grab->y);
 640 }
 641
 642 WL_EXPORT void
 643 weston_compositor_repick(struct weston_compositor *compositor)
 644 {
 645         struct weston_input_device *device;
 646
 647         if (!compositor->focus)
 648                 return;
 649
 650         wl_list_for_each(device, &compositor->input_device_list, link)
 651                 weston_device_repick(&device->input_device);
 652 }
 653
 654 static void
 655 weston_surface_unmap(struct weston_surface *surface)
 656 {
 657         struct wl_input_device *device = surface->compositor->input_device;
 658
 659         weston_surface_damage_below(surface);
 660         surface->output = NULL;
 661         wl_list_remove(&surface->link);
 662         wl_list_remove(&surface->layer_link);
 663
 664         if (device->keyboard_focus == &surface->surface)
 665                 wl_input_device_set_keyboard_focus(device, NULL);
 666         if (device->pointer_focus == &surface->surface)
 667                 wl_input_device_set_pointer_focus(device, NULL, 0, 0);
 668
 669         weston_compositor_schedule_repaint(surface->compositor);
 670 }
 671
 672 static void
 673 destroy_surface(struct wl_resource *resource)
 674 {
 675         struct weston_surface *surface =
 676                 container_of(resource,
 677                              struct weston_surface, surface.resource);
 678         struct weston_compositor *compositor = surface->compositor;
 679
 680         if (weston_surface_is_mapped(surface))
 681                 weston_surface_unmap(surface);
 682
 683         if (surface->texture)
 684                 glDeleteTextures(1, &surface->texture);
 685
 686         if (surface->buffer)
 687                 wl_list_remove(&surface->buffer_destroy_listener.link);
 688
 689         if (surface->image != EGL_NO_IMAGE_KHR)
 690                 compositor->destroy_image(compositor->display,
 691                                           surface->image);
 692
 693         pixman_region32_fini(&surface->transform.boundingbox);
 694         pixman_region32_fini(&surface->damage);
 695         pixman_region32_fini(&surface->opaque);
 696         pixman_region32_fini(&surface->clip);
 697         if (!region_is_undefined(&surface->input))
 698                 pixman_region32_fini(&surface->input);
 699
 700         free(surface);
 701 }
 702
 703 WL_EXPORT void
 704 weston_surface_destroy(struct weston_surface *surface)
 705 {
 706         /* Not a valid way to destroy a client surface */
 707         assert(surface->surface.resource.client == NULL);
 708
 709         destroy_surface(&surface->surface.resource);
 710 }
 711
 712 static void
 713 weston_surface_attach(struct wl_surface *surface, struct wl_buffer *buffer)
 714 {
 715         struct weston_surface *es = (struct weston_surface *) surface;
 716         struct weston_compositor *ec = es->compositor;
 717
 718         if (es->buffer) {
 719                 weston_buffer_post_release(es->buffer);
 720                 wl_list_remove(&es->buffer_destroy_listener.link);
 721         }
 722
 723         es->buffer = buffer;
 724
 725         if (!buffer) {
 726                 if (weston_surface_is_mapped(es))
 727                         weston_surface_unmap(es);
 728                 return;
 729         }
 730
 731         buffer->busy_count++;
 732         wl_signal_add(&es->buffer->resource.destroy_signal,
 733                       &es->buffer_destroy_listener);
 734
 735         if (es->geometry.width != buffer->width ||
 736             es->geometry.height != buffer->height) {
 737                 undef_region(&es->input);
 738                 pixman_region32_fini(&es->opaque);
 739                 pixman_region32_init(&es->opaque);
 740         }
 741
 742         if (!es->texture) {
 743                 glGenTextures(1, &es->texture);
 744                 glBindTexture(GL_TEXTURE_2D, es->texture);
 745                 glTexParameteri(GL_TEXTURE_2D,
 746                                 GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 747                 glTexParameteri(GL_TEXTURE_2D,
 748                                 GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 749                 es->shader = &ec->texture_shader;
 750         } else {
 751                 glBindTexture(GL_TEXTURE_2D, es->texture);
 752         }
 753
 754         if (wl_buffer_is_shm(buffer)) {
 755                 es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
 756                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 757                              es->pitch, es->buffer->height, 0,
 758                              GL_BGRA_EXT, GL_UNSIGNED_BYTE, NULL);
 759         } else {
 760                 if (es->image != EGL_NO_IMAGE_KHR)
 761                         ec->destroy_image(ec->display, es->image);
 762                 es->image = ec->create_image(ec->display, NULL,
 763                                              EGL_WAYLAND_BUFFER_WL,
 764                                              buffer, NULL);
 765
 766                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 767
 768                 es->pitch = buffer->width;
 769         }
 770 }
 771
 772 static int
 773 texture_region(struct weston_surface *es, pixman_region32_t *region)
 774 {
 775         struct weston_compositor *ec = es->compositor;
 776         GLfloat *v, inv_width, inv_height;
 777         GLfloat sx, sy;
 778         pixman_box32_t *rectangles;
 779         unsigned int *p;
 780         int i, n;
 781
 782         rectangles = pixman_region32_rectangles(region, &n);
 783         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 784         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 785         inv_width = 1.0 / es->pitch;
 786         inv_height = 1.0 / es->geometry.height;
 787
 788         for (i = 0; i < n; i++, v += 16, p += 6) {
 789                 surface_from_global_float(es, rectangles[i].x1,
 790                                           rectangles[i].y1, &sx, &sy);
 791                 v[ 0] = rectangles[i].x1;
 792                 v[ 1] = rectangles[i].y1;
 793                 v[ 2] = sx * inv_width;
 794                 v[ 3] = sy * inv_height;
 795
 796                 surface_from_global_float(es, rectangles[i].x1,
 797                                           rectangles[i].y2, &sx, &sy);
 798                 v[ 4] = rectangles[i].x1;
 799                 v[ 5] = rectangles[i].y2;
 800                 v[ 6] = sx * inv_width;
 801                 v[ 7] = sy * inv_height;
 802
 803                 surface_from_global_float(es, rectangles[i].x2,
 804                                           rectangles[i].y1, &sx, &sy);
 805                 v[ 8] = rectangles[i].x2;
 806                 v[ 9] = rectangles[i].y1;
 807                 v[10] = sx * inv_width;
 808                 v[11] = sy * inv_height;
 809
 810                 surface_from_global_float(es, rectangles[i].x2,
 811                                           rectangles[i].y2, &sx, &sy);
 812                 v[12] = rectangles[i].x2;
 813                 v[13] = rectangles[i].y2;
 814                 v[14] = sx * inv_width;
 815                 v[15] = sy * inv_height;
 816
 817                 p[0] = i * 4 + 0;
 818                 p[1] = i * 4 + 1;
 819                 p[2] = i * 4 + 2;
 820                 p[3] = i * 4 + 2;
 821                 p[4] = i * 4 + 1;
 822                 p[5] = i * 4 + 3;
 823         }
 824
 825         return n;
 826 }
 827
 828 WL_EXPORT void
 829 weston_surface_draw(struct weston_surface *es, struct weston_output *output,
 830                     pixman_region32_t *damage)
 831 {
 832         struct weston_compositor *ec = es->compositor;
 833         GLfloat *v;
 834         pixman_region32_t repaint;
 835         GLint filter;
 836         int n;
 837
 838         pixman_region32_init(&repaint);
 839         pixman_region32_intersect(&repaint,
 840                                   &es->transform.boundingbox, damage);
 841         pixman_region32_subtract(&repaint, &repaint, &es->clip);
 842
 843         if (!pixman_region32_not_empty(&repaint))
 844                 goto out;
 845
 846         glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 847         glEnable(GL_BLEND);
 848
 849         if (ec->current_shader != es->shader) {
 850                 glUseProgram(es->shader->program);
 851                 ec->current_shader = es->shader;
 852         }
 853
 854         glUniformMatrix4fv(es->shader->proj_uniform,
 855                            1, GL_FALSE, output->matrix.d);
 856         glUniform1i(es->shader->tex_uniform, 0);
 857         glUniform4fv(es->shader->color_uniform, 1, es->color);
 858         glUniform1f(es->shader->alpha_uniform, es->alpha / 255.0);
 859         glUniform1f(es->shader->brightness_uniform, es->brightness / 255.0);
 860         glUniform1f(es->shader->saturation_uniform, es->saturation / 255.0);
 861         glUniform1f(es->shader->texwidth_uniform,
 862                     (GLfloat)es->geometry.width / es->pitch);
 863
 864         if (es->transform.enabled || output->zoom.active)
 865                 filter = GL_LINEAR;
 866         else
 867                 filter = GL_NEAREST;
 868
 869         n = texture_region(es, &repaint);
 870
 871         glBindTexture(GL_TEXTURE_2D, es->texture);
 872         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
 873         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
 874
 875         v = ec->vertices.data;
 876         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 877         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 878         glEnableVertexAttribArray(0);
 879         glEnableVertexAttribArray(1);
 880
 881         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 882
 883         glDisableVertexAttribArray(1);
 884         glDisableVertexAttribArray(0);
 885
 886         ec->vertices.size = 0;
 887         ec->indices.size = 0;
 888
 889 out:
 890         pixman_region32_fini(&repaint);
 891 }
 892
 893 WL_EXPORT void
 894 weston_surface_restack(struct weston_surface *surface, struct wl_list *below)
 895 {
 896         wl_list_remove(&surface->layer_link);
 897         wl_list_insert(below, &surface->layer_link);
 898         weston_surface_damage_below(surface);
 899         weston_surface_damage(surface);
 900 }
 901
 902 WL_EXPORT void
 903 weston_compositor_damage_all(struct weston_compositor *compositor)
 904 {
 905         struct weston_output *output;
 906
 907         wl_list_for_each(output, &compositor->output_list, link)
 908                 weston_output_damage(output);
 909 }
 910
 911 WL_EXPORT void
 912 weston_buffer_post_release(struct wl_buffer *buffer)
 913 {
 914         if (--buffer->busy_count > 0)
 915                 return;
 916
 917         assert(buffer->resource.client != NULL);
 918         wl_resource_queue_event(&buffer->resource, WL_BUFFER_RELEASE);
 919 }
 920
 921 WL_EXPORT void
 922 weston_output_damage(struct weston_output *output)
 923 {
 924         struct weston_compositor *compositor = output->compositor;
 925
 926         pixman_region32_union(&compositor->damage,
 927                               &compositor->damage, &output->region);
 928         weston_compositor_schedule_repaint(compositor);
 929 }
 930
 931 static void
 932 fade_frame(struct weston_animation *animation,
 933            struct weston_output *output, uint32_t msecs)
 934 {
 935         struct weston_compositor *compositor =
 936                 container_of(animation,
 937                              struct weston_compositor, fade.animation);
 938         struct weston_surface *surface;
 939
 940         surface = compositor->fade.surface;
 941         weston_spring_update(&compositor->fade.spring, msecs);
 942         weston_surface_set_color(surface, 0.0, 0.0, 0.0,
 943                                  compositor->fade.spring.current);
 944         weston_surface_damage(surface);
 945
 946         if (weston_spring_done(&compositor->fade.spring)) {
 947                 compositor->fade.spring.current =
 948                         compositor->fade.spring.target;
 949                 wl_list_remove(&animation->link);
 950                 wl_list_init(&animation->link);
 951
 952                 if (compositor->fade.spring.current < 0.001) {
 953                         destroy_surface(&surface->surface.resource);
 954                         compositor->fade.surface = NULL;
 955                 } else if (compositor->fade.spring.current > 0.999) {
 956                         compositor->state = WESTON_COMPOSITOR_SLEEPING;
 957                         wl_signal_emit(&compositor->lock_signal, compositor);
 958                 }
 959         }
 960 }
 961
 962 struct weston_frame_callback {
 963         struct wl_resource resource;
 964         struct wl_list link;
 965 };
 966
 967 static void
 968 weston_output_repaint(struct weston_output *output, int msecs)
 969 {
 970         struct weston_compositor *ec = output->compositor;
 971         struct weston_surface *es;
 972         struct weston_layer *layer;
 973         struct weston_animation *animation, *next;
 974         struct weston_frame_callback *cb, *cnext;
 975         pixman_region32_t opaque, new_damage, output_damage;
 976         int32_t width, height;
 977
 978         weston_compositor_update_drag_surfaces(ec);
 979
 980         width = output->current->width +
 981                 output->border.left + output->border.right;
 982         height = output->current->height +
 983                 output->border.top + output->border.bottom;
 984         glViewport(0, 0, width, height);
 985
 986         /* Rebuild the surface list and update surface transforms up front. */
 987         wl_list_init(&ec->surface_list);
 988         wl_list_for_each(layer, &ec->layer_list, link) {
 989                 wl_list_for_each(es, &layer->surface_list, layer_link) {
 990                         weston_surface_update_transform(es);
 991                         wl_list_insert(ec->surface_list.prev, &es->link);
 992                 }
 993         }
 994
 995         if (output->assign_planes)
 996                 /*
 997                  * This will queue flips for the fbs and sprites where
 998                  * applicable and clear the damage for those surfaces.
 999                  * The repaint loop below will repaint everything
1000                  * else.
1001                  */
1002                 output->assign_planes(output);
1003
1004         pixman_region32_init(&new_damage);
1005         pixman_region32_init(&opaque);
1006
1007         wl_list_for_each(es, &ec->surface_list, link) {
1008                 pixman_region32_subtract(&es->damage, &es->damage, &opaque);
1009                 pixman_region32_union(&new_damage, &new_damage, &es->damage);
1010                 empty_region(&es->damage);
1011                 pixman_region32_copy(&es->clip, &opaque);
1012                 pixman_region32_union(&opaque, &opaque, &es->transform.opaque);
1013         }
1014
1015         pixman_region32_union(&ec->damage, &ec->damage, &new_damage);
1016
1017         pixman_region32_init(&output_damage);
1018         pixman_region32_union(&output_damage,
1019                               &ec->damage, &output->previous_damage);
1020         pixman_region32_copy(&output->previous_damage, &ec->damage);
1021         pixman_region32_intersect(&output_damage,
1022                                   &output_damage, &output->region);
1023         pixman_region32_subtract(&ec->damage, &ec->damage, &output->region);
1024
1025         pixman_region32_fini(&opaque);
1026         pixman_region32_fini(&new_damage);
1027
1028         if (output->dirty)
1029                 weston_output_update_matrix(output);
1030
1031         output->repaint(output, &output_damage);
1032
1033         pixman_region32_fini(&output_damage);
1034
1035         output->repaint_needed = 0;
1036
1037         weston_compositor_repick(ec);
1038         wl_event_loop_dispatch(ec->input_loop, 0);
1039
1040         wl_list_for_each_safe(cb, cnext, &output->frame_callback_list, link) {
1041                 wl_callback_send_done(&cb->resource, msecs);
1042                 wl_resource_destroy(&cb->resource);
1043         }
1044
1045         wl_list_for_each_safe(animation, next, &ec->animation_list, link)
1046                 animation->frame(animation, output, msecs);
1047 }
1048
1049 static int
1050 weston_compositor_read_input(int fd, uint32_t mask, void *data)
1051 {
1052         struct weston_compositor *compositor = data;
1053
1054         wl_event_loop_dispatch(compositor->input_loop, 0);
1055
1056         return 1;
1057 }
1058
1059 WL_EXPORT void
1060 weston_output_finish_frame(struct weston_output *output, int msecs)
1061 {
1062         struct weston_compositor *compositor = output->compositor;
1063         struct wl_event_loop *loop =
1064                 wl_display_get_event_loop(compositor->wl_display);
1065         int fd;
1066
1067         if (output->repaint_needed) {
1068                 weston_output_repaint(output, msecs);
1069                 return;
1070         }
1071
1072         output->repaint_scheduled = 0;
1073         if (compositor->input_loop_source)
1074                 return;
1075
1076         fd = wl_event_loop_get_fd(compositor->input_loop);
1077         compositor->input_loop_source =
1078                 wl_event_loop_add_fd(loop, fd, WL_EVENT_READABLE,
1079                                      weston_compositor_read_input, compositor);
1080 }
1081
1082 static void
1083 idle_repaint(void *data)
1084 {
1085         struct weston_output *output = data;
1086
1087         weston_output_finish_frame(output, weston_compositor_get_time());
1088 }
1089
1090 WL_EXPORT void
1091 weston_layer_init(struct weston_layer *layer, struct wl_list *below)
1092 {
1093         wl_list_init(&layer->surface_list);
1094         wl_list_insert(below, &layer->link);
1095 }
1096
1097 WL_EXPORT void
1098 weston_compositor_schedule_repaint(struct weston_compositor *compositor)
1099 {
1100         struct weston_output *output;
1101         struct wl_event_loop *loop;
1102
1103         if (compositor->state == WESTON_COMPOSITOR_SLEEPING)
1104                 return;
1105
1106         loop = wl_display_get_event_loop(compositor->wl_display);
1107         wl_list_for_each(output, &compositor->output_list, link) {
1108                 output->repaint_needed = 1;
1109                 if (output->repaint_scheduled)
1110                         continue;
1111
1112                 wl_event_loop_add_idle(loop, idle_repaint, output);
1113                 output->repaint_scheduled = 1;
1114         }
1115
1116         if (compositor->input_loop_source) {
1117                 wl_event_source_remove(compositor->input_loop_source);
1118                 compositor->input_loop_source = NULL;
1119         }
1120 }
1121
1122 WL_EXPORT void
1123 weston_compositor_fade(struct weston_compositor *compositor, float tint)
1124 {
1125         struct weston_surface *surface;
1126         int done;
1127
1128         done = weston_spring_done(&compositor->fade.spring);
1129         compositor->fade.spring.target = tint;
1130         if (weston_spring_done(&compositor->fade.spring))
1131                 return;
1132
1133         if (done)
1134                 compositor->fade.spring.timestamp =
1135                         weston_compositor_get_time();
1136
1137         if (compositor->fade.surface == NULL) {
1138                 surface = weston_surface_create(compositor);
1139                 weston_surface_configure(surface, 0, 0, 8192, 8192);
1140                 weston_surface_set_color(surface, 0.0, 0.0, 0.0, 0.0);
1141                 wl_list_insert(&compositor->fade_layer.surface_list,
1142                                &surface->layer_link);
1143                 weston_surface_assign_output(surface);
1144                 compositor->fade.surface = surface;
1145                 pixman_region32_init(&surface->input);
1146         }
1147
1148         weston_surface_damage(compositor->fade.surface);
1149         if (wl_list_empty(&compositor->fade.animation.link))
1150                 wl_list_insert(compositor->animation_list.prev,
1151                                &compositor->fade.animation.link);
1152 }
1153
1154 static void
1155 surface_destroy(struct wl_client *client, struct wl_resource *resource)
1156 {
1157         wl_resource_destroy(resource);
1158 }
1159
1160 static struct wl_resource *
1161 find_resource_for_client(struct wl_list *list, struct wl_client *client)
1162 {
1163         struct wl_resource *r;
1164
1165         wl_list_for_each(r, list, link) {
1166                 if (r->client == client)
1167                         return r;
1168         }
1169
1170         return NULL;
1171 }
1172
1173 static void
1174 weston_surface_update_output_mask(struct weston_surface *es, uint32_t mask)
1175 {
1176         uint32_t different = es->output_mask ^ mask;
1177         uint32_t entered = mask & different;
1178         uint32_t left = es->output_mask & different;
1179         struct weston_output *output;
1180         struct wl_resource *resource;
1181         struct wl_client *client = es->surface.resource.client;
1182
1183         if (es->surface.resource.client == NULL)
1184                 return;
1185         if (different == 0)
1186                 return;
1187
1188         es->output_mask = mask;
1189         wl_list_for_each(output, &es->compositor->output_list, link) {
1190                 if (1 << output->id & different)
1191                         resource =
1192                                 find_resource_for_client(&output->resource_list,
1193                                                          client);
1194                 if (1 << output->id & entered)
1195                         wl_surface_send_enter(&es->surface.resource, resource);
1196                 if (1 << output->id & left)
1197                         wl_surface_send_leave(&es->surface.resource, resource);
1198         }
1199 }
1200
1201 WL_EXPORT void
1202 weston_surface_assign_output(struct weston_surface *es)
1203 {
1204         struct weston_compositor *ec = es->compositor;
1205         struct weston_output *output, *new_output;
1206         pixman_region32_t region;
1207         uint32_t max, area, mask;
1208         pixman_box32_t *e;
1209
1210         weston_surface_update_transform(es);
1211
1212         new_output = NULL;
1213         max = 0;
1214         mask = 0;
1215         pixman_region32_init(&region);
1216         wl_list_for_each(output, &ec->output_list, link) {
1217                 pixman_region32_intersect(&region, &es->transform.boundingbox,
1218                                           &output->region);
1219
1220                 e = pixman_region32_extents(&region);
1221                 area = (e->x2 - e->x1) * (e->y2 - e->y1);
1222
1223                 if (area > 0)
1224                         mask |= 1 << output->id;
1225
1226                 if (area >= max) {
1227                         new_output = output;
1228                         max = area;
1229                 }
1230         }
1231         pixman_region32_fini(&region);
1232
1233         es->output = new_output;
1234         weston_surface_update_output_mask(es, mask);
1235
1236         if (!wl_list_empty(&es->frame_callback_list)) {
1237                 wl_list_insert_list(new_output->frame_callback_list.prev,
1238                                     &es->frame_callback_list);
1239                 wl_list_init(&es->frame_callback_list);
1240         }
1241 }
1242
1243 static void
1244 surface_attach(struct wl_client *client,
1245                struct wl_resource *resource,
1246                struct wl_resource *buffer_resource, int32_t sx, int32_t sy)
1247 {
1248         struct weston_surface *es = resource->data;
1249         struct wl_buffer *buffer = NULL;
1250
1251         if (buffer_resource)
1252                 buffer = buffer_resource->data;
1253
1254         weston_surface_attach(&es->surface, buffer);
1255
1256         if (buffer && es->configure)
1257                 es->configure(es, sx, sy);
1258 }
1259
1260 static void
1261 texture_set_subimage(struct weston_surface *surface,
1262                      int32_t x, int32_t y, int32_t width, int32_t height)
1263 {
1264         glBindTexture(GL_TEXTURE_2D, surface->texture);
1265
1266 #ifdef GL_UNPACK_ROW_LENGTH
1267         /* Mesa does not define GL_EXT_unpack_subimage */
1268
1269         if (surface->compositor->has_unpack_subimage) {
1270                 glPixelStorei(GL_UNPACK_ROW_LENGTH, surface->pitch);
1271                 glPixelStorei(GL_UNPACK_SKIP_PIXELS, x);
1272                 glPixelStorei(GL_UNPACK_SKIP_ROWS, y);
1273
1274                 glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height,
1275                                 GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1276                                 wl_shm_buffer_get_data(surface->buffer));
1277                 return;
1278         }
1279 #endif
1280
1281         glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1282                      surface->pitch, surface->buffer->height, 0,
1283                      GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1284                      wl_shm_buffer_get_data(surface->buffer));
1285 }
1286
1287 static void
1288 surface_damage(struct wl_client *client,
1289                struct wl_resource *resource,
1290                int32_t x, int32_t y, int32_t width, int32_t height)
1291 {
1292         struct weston_surface *es = resource->data;
1293
1294         weston_surface_damage_rectangle(es, x, y, width, height);
1295
1296         if (es->buffer && wl_buffer_is_shm(es->buffer))
1297                 texture_set_subimage(es, x, y, width, height);
1298 }
1299
1300 static void
1301 destroy_frame_callback(struct wl_resource *resource)
1302 {
1303         struct weston_frame_callback *cb = resource->data;
1304
1305         wl_list_remove(&cb->link);
1306         free(cb);
1307 }
1308
1309 static void
1310 surface_frame(struct wl_client *client,
1311               struct wl_resource *resource, uint32_t callback)
1312 {
1313         struct weston_frame_callback *cb;
1314         struct weston_surface *es = resource->data;
1315
1316         cb = malloc(sizeof *cb);
1317         if (cb == NULL) {
1318                 wl_resource_post_no_memory(resource);
1319                 return;
1320         }
1321
1322         cb->resource.object.interface = &wl_callback_interface;
1323         cb->resource.object.id = callback;
1324         cb->resource.destroy = destroy_frame_callback;
1325         cb->resource.client = client;
1326         cb->resource.data = cb;
1327
1328         wl_client_add_resource(client, &cb->resource);
1329
1330         if (es->output) {
1331                 wl_list_insert(es->output->frame_callback_list.prev,
1332                                &cb->link);
1333         } else {
1334                 wl_list_insert(es->frame_callback_list.prev, &cb->link);
1335         }
1336 }
1337
1338 static void
1339 surface_set_opaque_region(struct wl_client *client,
1340                           struct wl_resource *resource,
1341                           struct wl_resource *region_resource)
1342 {
1343         struct weston_surface *surface = resource->data;
1344         struct weston_region *region;
1345
1346         pixman_region32_fini(&surface->opaque);
1347
1348         if (region_resource) {
1349                 region = region_resource->data;
1350                 pixman_region32_init_rect(&surface->opaque, 0, 0,
1351                                           surface->geometry.width,
1352                                           surface->geometry.height);
1353                 pixman_region32_intersect(&surface->opaque,
1354                                           &surface->opaque, &region->region);
1355         } else {
1356                 pixman_region32_init(&surface->opaque);
1357         }
1358
1359         surface->geometry.dirty = 1;
1360 }
1361
1362 static void
1363 surface_set_input_region(struct wl_client *client,
1364                          struct wl_resource *resource,
1365                          struct wl_resource *region_resource)
1366 {
1367         struct weston_surface *surface = resource->data;
1368         struct weston_region *region;
1369
1370         if (region_resource) {
1371                 region = region_resource->data;
1372                 pixman_region32_init_rect(&surface->input, 0, 0,
1373                                           surface->geometry.width,
1374                                           surface->geometry.height);
1375                 pixman_region32_intersect(&surface->input,
1376                                           &surface->input, &region->region);
1377         } else {
1378                 pixman_region32_init_rect(&surface->input, 0, 0,
1379                                           surface->geometry.width,
1380                                           surface->geometry.height);
1381         }
1382
1383         weston_compositor_schedule_repaint(surface->compositor);
1384 }
1385
1386 static const struct wl_surface_interface surface_interface = {
1387         surface_destroy,
1388         surface_attach,
1389         surface_damage,
1390         surface_frame,
1391         surface_set_opaque_region,
1392         surface_set_input_region
1393 };
1394
1395 static void
1396 compositor_create_surface(struct wl_client *client,
1397                           struct wl_resource *resource, uint32_t id)
1398 {
1399         struct weston_compositor *ec = resource->data;
1400         struct weston_surface *surface;
1401
1402         surface = weston_surface_create(ec);
1403         if (surface == NULL) {
1404                 wl_resource_post_no_memory(resource);
1405                 return;
1406         }
1407
1408         surface->surface.resource.destroy = destroy_surface;
1409
1410         surface->surface.resource.object.id = id;
1411         surface->surface.resource.object.interface = &wl_surface_interface;
1412         surface->surface.resource.object.implementation =
1413                 (void (**)(void)) &surface_interface;
1414         surface->surface.resource.data = surface;
1415
1416         wl_client_add_resource(client, &surface->surface.resource);
1417 }
1418
1419 static void
1420 destroy_region(struct wl_resource *resource)
1421 {
1422         struct weston_region *region =
1423                 container_of(resource, struct weston_region, resource);
1424
1425         pixman_region32_fini(&region->region);
1426         free(region);
1427 }
1428
1429 static void
1430 region_destroy(struct wl_client *client, struct wl_resource *resource)
1431 {
1432         wl_resource_destroy(resource);
1433 }
1434
1435 static void
1436 region_add(struct wl_client *client, struct wl_resource *resource,
1437            int32_t x, int32_t y, int32_t width, int32_t height)
1438 {
1439         struct weston_region *region = resource->data;
1440
1441         pixman_region32_union_rect(&region->region, &region->region,
1442                                    x, y, width, height);
1443 }
1444
1445 static void
1446 region_subtract(struct wl_client *client, struct wl_resource *resource,
1447                 int32_t x, int32_t y, int32_t width, int32_t height)
1448 {
1449         struct weston_region *region = resource->data;
1450         pixman_region32_t rect;
1451
1452         pixman_region32_init_rect(&rect, x, y, width, height);
1453         pixman_region32_subtract(&region->region, &region->region, &rect);
1454         pixman_region32_fini(&rect);
1455 }
1456
1457 static const struct wl_region_interface region_interface = {
1458         region_destroy,
1459         region_add,
1460         region_subtract
1461 };
1462
1463 static void
1464 compositor_create_region(struct wl_client *client,
1465                          struct wl_resource *resource, uint32_t id)
1466 {
1467         struct weston_region *region;
1468
1469         region = malloc(sizeof *region);
1470         if (region == NULL) {
1471                 wl_resource_post_no_memory(resource);
1472                 return;
1473         }
1474
1475         region->resource.destroy = destroy_region;
1476
1477         region->resource.object.id = id;
1478         region->resource.object.interface = &wl_region_interface;
1479         region->resource.object.implementation =
1480                 (void (**)(void)) &region_interface;
1481         region->resource.data = region;
1482
1483         pixman_region32_init(&region->region);
1484
1485         wl_client_add_resource(client, &region->resource);
1486 }
1487
1488 static const struct wl_compositor_interface compositor_interface = {
1489         compositor_create_surface,
1490         compositor_create_region
1491 };
1492
1493 WL_EXPORT void
1494 weston_compositor_wake(struct weston_compositor *compositor)
1495 {
1496         compositor->state = WESTON_COMPOSITOR_ACTIVE;
1497         weston_compositor_fade(compositor, 0.0);
1498
1499         wl_event_source_timer_update(compositor->idle_source,
1500                                      compositor->idle_time * 1000);
1501 }
1502
1503 static void
1504 weston_compositor_dpms_on(struct weston_compositor *compositor)
1505 {
1506         struct weston_output *output;
1507
1508         wl_list_for_each(output, &compositor->output_list, link)
1509                 if (output->set_dpms)
1510                         output->set_dpms(output, WESTON_DPMS_ON);
1511 }
1512
1513 WL_EXPORT void
1514 weston_compositor_activity(struct weston_compositor *compositor)
1515 {
1516         if (compositor->state == WESTON_COMPOSITOR_ACTIVE) {
1517                 weston_compositor_wake(compositor);
1518         } else {
1519                 weston_compositor_dpms_on(compositor);
1520                 wl_signal_emit(&compositor->unlock_signal, compositor);
1521         }
1522 }
1523
1524 static void
1525 weston_compositor_idle_inhibit(struct weston_compositor *compositor)
1526 {
1527         weston_compositor_activity(compositor);
1528         compositor->idle_inhibit++;
1529 }
1530
1531 static void
1532 weston_compositor_idle_release(struct weston_compositor *compositor)
1533 {
1534         compositor->idle_inhibit--;
1535         weston_compositor_activity(compositor);
1536 }
1537
1538 static int
1539 idle_handler(void *data)
1540 {
1541         struct weston_compositor *compositor = data;
1542
1543         if (compositor->idle_inhibit)
1544                 return 1;
1545
1546         weston_compositor_fade(compositor, 1.0);
1547
1548         return 1;
1549 }
1550
1551 static  void
1552 weston_input_update_drag_surface(struct wl_input_device *input_device,
1553                                  int dx, int dy);
1554
1555 WL_EXPORT void
1556 notify_motion(struct wl_input_device *device, uint32_t time, GLfloat x, GLfloat y)
1557 {
1558         struct weston_output *output;
1559         const struct wl_pointer_grab_interface *interface;
1560         struct weston_input_device *wd = (struct weston_input_device *) device;
1561         struct weston_compositor *ec = wd->compositor;
1562         int x_valid = 0, y_valid = 0;
1563         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1564
1565         weston_compositor_activity(ec);
1566
1567         wl_list_for_each(output, &ec->output_list, link) {
1568                 if (output->x <= x && x < output->x + output->current->width)
1569                         x_valid = 1;
1570
1571                 if (output->y <= y && y < output->y + output->current->height)
1572                         y_valid = 1;
1573
1574                 /* FIXME: calculate this only on output addition/deletion */
1575                 if (output->x < min_x)
1576                         min_x = output->x;
1577                 if (output->y < min_y)
1578                         min_y = output->y;
1579
1580                 if (output->x + output->current->width > max_x)
1581                         max_x = output->x + output->current->width - 1;
1582                 if (output->y + output->current->height > max_y)
1583                         max_y = output->y + output->current->height - 1;
1584         }
1585
1586         if (!x_valid) {
1587                 if (x < min_x)
1588                         x = min_x;
1589                 else if (x >= max_x)
1590                         x = max_x;
1591         }
1592         if (!y_valid) {
1593                 if (y < min_y)
1594                         y = min_y;
1595                 else  if (y >= max_y)
1596                         y = max_y;
1597         }
1598
1599         weston_input_update_drag_surface(device,
1600                                          x - device->x, y - device->y);
1601
1602         device->x = x;
1603         device->y = y;
1604
1605         wl_list_for_each(output, &ec->output_list, link)
1606                 if (output->zoom.active &&
1607                     pixman_region32_contains_point(&output->region, x, y, NULL))
1608                         weston_output_update_zoom(output, x, y);
1609
1610         weston_device_repick(device);
1611         interface = device->pointer_grab->interface;
1612         interface->motion(device->pointer_grab, time,
1613                           device->pointer_grab->x, device->pointer_grab->y);
1614
1615         if (wd->sprite) {
1616                 weston_surface_set_position(wd->sprite,
1617                                             device->x - wd->hotspot_x,
1618                                             device->y - wd->hotspot_y);
1619
1620                 weston_compositor_schedule_repaint(ec);
1621         }
1622 }
1623
1624 WL_EXPORT void
1625 weston_surface_activate(struct weston_surface *surface,
1626                         struct weston_input_device *device)
1627 {
1628         struct weston_compositor *compositor = device->compositor;
1629
1630         wl_input_device_set_keyboard_focus(&device->input_device,
1631                                            &surface->surface);
1632         wl_data_device_set_keyboard_focus(&device->input_device);
1633
1634         wl_signal_emit(&compositor->activate_signal, surface);
1635 }
1636
1637 WL_EXPORT void
1638 notify_button(struct wl_input_device *device,
1639               uint32_t time, int32_t button, uint32_t state)
1640 {
1641         struct weston_input_device *wd = (struct weston_input_device *) device;
1642         struct weston_compositor *compositor = wd->compositor;
1643         struct weston_surface *focus = (struct weston_surface *) device->pointer_focus;
1644         uint32_t serial = wl_display_next_serial(compositor->wl_display);
1645
1646         if (state) {
1647                 if (compositor->ping_handler && focus)
1648                         compositor->ping_handler(focus, serial);
1649                 weston_compositor_idle_inhibit(compositor);
1650                 if (device->button_count == 0) {
1651                         device->grab_button = button;
1652                         device->grab_time = time;
1653                         device->grab_x = device->x;
1654                         device->grab_y = device->y;
1655                 }
1656                 device->button_count++;
1657         } else {
1658                 weston_compositor_idle_release(compositor);
1659                 device->button_count--;
1660         }
1661
1662         weston_compositor_run_binding(compositor, wd, time, 0, button, 0, state);
1663
1664         device->pointer_grab->interface->button(device->pointer_grab, time, button, state);
1665
1666         if (device->button_count == 1)
1667                 device->grab_serial =
1668                         wl_display_get_serial(compositor->wl_display);
1669 }
1670
1671 WL_EXPORT void
1672 notify_axis(struct wl_input_device *device,
1673               uint32_t time, uint32_t axis, int32_t value)
1674 {
1675         struct weston_input_device *wd = (struct weston_input_device *) device;
1676         struct weston_compositor *compositor = wd->compositor;
1677         struct weston_surface *focus = (struct weston_surface *) device->pointer_focus;
1678         uint32_t serial = wl_display_next_serial(compositor->wl_display);
1679
1680         if (compositor->ping_handler && focus)
1681                 compositor->ping_handler(focus, serial);
1682
1683         weston_compositor_activity(compositor);
1684
1685         if (value)
1686                 weston_compositor_run_binding(compositor, wd,
1687                                                 time, 0, 0, axis, value);
1688         else
1689                 return;
1690
1691         if (device->pointer_focus_resource)
1692                 wl_resource_post_event(device->pointer_focus_resource,
1693                                 WL_INPUT_DEVICE_AXIS, time, axis, value);
1694 }
1695
1696 static void
1697 update_modifier_state(struct weston_input_device *device,
1698                       uint32_t key, uint32_t state)
1699 {
1700         uint32_t modifier;
1701
1702         switch (key) {
1703         case KEY_LEFTCTRL:
1704         case KEY_RIGHTCTRL:
1705                 modifier = MODIFIER_CTRL;
1706                 break;
1707
1708         case KEY_LEFTALT:
1709         case KEY_RIGHTALT:
1710                 modifier = MODIFIER_ALT;
1711                 break;
1712
1713         case KEY_LEFTMETA:
1714         case KEY_RIGHTMETA:
1715                 modifier = MODIFIER_SUPER;
1716                 break;
1717
1718         default:
1719                 modifier = 0;
1720                 break;
1721         }
1722
1723         if (state)
1724                 device->modifier_state |= modifier;
1725         else
1726                 device->modifier_state &= ~modifier;
1727 }
1728
1729 WL_EXPORT void
1730 notify_key(struct wl_input_device *device,
1731            uint32_t time, uint32_t key, uint32_t state)
1732 {
1733         struct weston_input_device *wd = (struct weston_input_device *) device;
1734         struct weston_compositor *compositor = wd->compositor;
1735         struct weston_surface *focus = (struct weston_surface *) device->pointer_focus;
1736         uint32_t serial = wl_display_next_serial(compositor->wl_display);
1737         uint32_t *k, *end;
1738
1739         if (state) {
1740                 if (compositor->ping_handler && focus)
1741                         compositor->ping_handler(focus, serial);
1742
1743                 weston_compositor_idle_inhibit(compositor);
1744                 device->grab_key = key;
1745                 device->grab_time = time;
1746         } else {
1747                 weston_compositor_idle_release(compositor);
1748         }
1749
1750         update_modifier_state(wd, key, state);
1751         end = device->keys.data + device->keys.size;
1752         for (k = device->keys.data; k < end; k++) {
1753                 if (*k == key)
1754                         *k = *--end;
1755         }
1756         device->keys.size = (void *) end - device->keys.data;
1757         if (state) {
1758                 k = wl_array_add(&device->keys, sizeof *k);
1759                 *k = key;
1760         }
1761
1762         if (device->keyboard_grab == &device->default_keyboard_grab)
1763                 weston_compositor_run_binding(compositor, wd,
1764                                               time, key, 0, 0, state);
1765
1766         device->keyboard_grab->interface->key(device->keyboard_grab,
1767                                               time, key, state);
1768 }
1769
1770 WL_EXPORT void
1771 notify_pointer_focus(struct wl_input_device *device,
1772                      struct weston_output *output, GLfloat x, GLfloat y)
1773 {
1774         struct weston_input_device *wd = (struct weston_input_device *) device;
1775         struct weston_compositor *compositor = wd->compositor;
1776
1777         if (output) {
1778                 weston_input_update_drag_surface(device, x - device->x,
1779                                                  y - device->y);
1780
1781                 device->x = x;
1782                 device->y = y;
1783                 compositor->focus = 1;
1784                 weston_compositor_repick(compositor);
1785         } else {
1786                 compositor->focus = 0;
1787                 weston_compositor_repick(compositor);
1788         }
1789 }
1790
1791 static void
1792 destroy_device_saved_kbd_focus(struct wl_listener *listener, void *data)
1793 {
1794         struct weston_input_device *wd;
1795
1796         wd = container_of(listener, struct weston_input_device,
1797                           saved_kbd_focus_listener);
1798
1799         wd->saved_kbd_focus = NULL;
1800 }
1801
1802 WL_EXPORT void
1803 notify_keyboard_focus(struct wl_input_device *device, struct wl_array *keys)
1804 {
1805         struct weston_input_device *wd =
1806                 (struct weston_input_device *) device;
1807         struct weston_compositor *compositor = wd->compositor;
1808         struct wl_surface *surface;
1809         uint32_t *k;
1810
1811         if (keys) {
1812                 wl_array_copy(&wd->input_device.keys, keys);
1813                 wd->modifier_state = 0;
1814                 wl_array_for_each(k, &device->keys) {
1815                         weston_compositor_idle_inhibit(compositor);
1816                         update_modifier_state(wd, *k, 1);
1817                 }
1818
1819                 surface = wd->saved_kbd_focus;
1820
1821                 if (surface) {
1822                         wl_list_remove(&wd->saved_kbd_focus_listener.link);
1823                         wl_input_device_set_keyboard_focus(&wd->input_device,
1824                                                            surface);
1825                         wd->saved_kbd_focus = NULL;
1826                 }
1827         } else {
1828                 wl_array_for_each(k, &device->keys)
1829                         weston_compositor_idle_release(compositor);
1830
1831                 wd->modifier_state = 0;
1832
1833                 surface = wd->input_device.keyboard_focus;
1834
1835                 if (surface) {
1836                         wd->saved_kbd_focus = surface;
1837                         wd->saved_kbd_focus_listener.notify =
1838                                 destroy_device_saved_kbd_focus;
1839                         wl_signal_add(&surface->resource.destroy_signal,
1840                                       &wd->saved_kbd_focus_listener);
1841                 }
1842
1843                 wl_input_device_set_keyboard_focus(&wd->input_device, NULL);
1844                 /* FIXME: We really need keyboard grab cancel here to
1845                  * let the grab shut down properly.  As it is we leak
1846                  * the grab data. */
1847                 wl_input_device_end_keyboard_grab(&wd->input_device);
1848         }
1849 }
1850
1851 static void
1852 lose_touch_focus_resource(struct wl_listener *listener, void *data)
1853 {
1854         struct weston_input_device *device =
1855                 container_of(listener, struct weston_input_device,
1856                              touch_focus_resource_listener);
1857
1858         device->touch_focus_resource = NULL;
1859 }
1860
1861 static void
1862 lose_touch_focus(struct wl_listener *listener, void *data)
1863 {
1864         struct weston_input_device *device =
1865                 container_of(listener, struct weston_input_device,
1866                              touch_focus_listener);
1867
1868         device->touch_focus = NULL;
1869 }
1870
1871 static void
1872 touch_set_focus(struct weston_input_device *device,
1873                 struct wl_surface *surface)
1874 {
1875         struct wl_input_device *input_device = &device->input_device;
1876         struct wl_resource *resource;
1877
1878         if (device->touch_focus == surface)
1879                 return;
1880
1881         if (surface) {
1882                 resource =
1883                         find_resource_for_client(&input_device->resource_list,
1884                                                  surface->resource.client);
1885                 if (!resource) {
1886                         fprintf(stderr, "couldn't find resource\n");
1887                         return;
1888                 }
1889
1890                 device->touch_focus_resource_listener.notify =
1891                         lose_touch_focus_resource;
1892                 wl_signal_add(&resource->destroy_signal,
1893                               &device->touch_focus_resource_listener);
1894                 device->touch_focus_listener.notify = lose_touch_focus;
1895                 wl_signal_add(&surface->resource.destroy_signal,
1896                                &device->touch_focus_listener);
1897
1898                 device->touch_focus = surface;
1899                 device->touch_focus_resource = resource;
1900         } else {
1901                 if (device->touch_focus)
1902                         wl_list_remove(&device->touch_focus_listener.link);
1903                 if (device->touch_focus_resource)
1904                         wl_list_remove(&device->touch_focus_resource_listener.link);
1905                 device->touch_focus = NULL;
1906                 device->touch_focus_resource = NULL;
1907         }
1908 }
1909
1910 /**
1911  * notify_touch - emulates button touches and notifies surfaces accordingly.
1912  *
1913  * It assumes always the correct cycle sequence until it gets here: touch_down
1914  * → touch_update → ... → touch_update → touch_end. The driver is responsible
1915  * for sending along such order.
1916  *
1917  */
1918 WL_EXPORT void
1919 notify_touch(struct wl_input_device *device, uint32_t time, int touch_id,
1920              GLfloat x, GLfloat y, int touch_type)
1921 {
1922         struct weston_input_device *wd = (struct weston_input_device *) device;
1923         struct weston_compositor *ec = wd->compositor;
1924         struct weston_surface *es;
1925         int32_t sx, sy;
1926         uint32_t serial = 0;
1927
1928         switch (touch_type) {
1929         case WL_INPUT_DEVICE_TOUCH_DOWN:
1930                 weston_compositor_idle_inhibit(ec);
1931
1932                 wd->num_tp++;
1933
1934                 /* the first finger down picks the surface, and all further go
1935                  * to that surface for the remainder of the touch session i.e.
1936                  * until all touch points are up again. */
1937                 if (wd->num_tp == 1) {
1938                         es = weston_compositor_pick_surface(ec, x, y, &sx, &sy);
1939                         touch_set_focus(wd, &es->surface);
1940                 } else if (wd->touch_focus) {
1941                         es = (struct weston_surface *) wd->touch_focus;
1942                         weston_surface_from_global(es, x, y, &sx, &sy);
1943                 }
1944
1945                 if (wd->touch_focus_resource && wd->touch_focus)
1946                         wl_input_device_send_touch_down(wd->touch_focus_resource,
1947                                                         serial, time, &wd->touch_focus->resource,
1948                                                         touch_id, sx, sy);
1949                 break;
1950         case WL_INPUT_DEVICE_TOUCH_MOTION:
1951                 es = (struct weston_surface *) wd->touch_focus;
1952                 if (!es)
1953                         break;
1954
1955                 weston_surface_from_global(es, x, y, &sx, &sy);
1956                 if (wd->touch_focus_resource)
1957                         wl_input_device_send_touch_motion(wd->touch_focus_resource,
1958                                                           time, touch_id, sx, sy);
1959                 break;
1960         case WL_INPUT_DEVICE_TOUCH_UP:
1961                 weston_compositor_idle_release(ec);
1962                 wd->num_tp--;
1963
1964                 if (wd->touch_focus_resource)
1965                         wl_input_device_send_touch_up(wd->touch_focus_resource,
1966                                                       serial, time, touch_id);
1967                 if (wd->num_tp == 0)
1968                         touch_set_focus(wd, NULL);
1969                 break;
1970         }
1971 }
1972
1973 static void
1974 input_device_attach(struct wl_client *client,
1975                     struct wl_resource *resource,
1976                     uint32_t serial,
1977                     struct wl_resource *buffer_resource, int32_t x, int32_t y)
1978 {
1979         struct weston_input_device *device = resource->data;
1980         struct weston_compositor *compositor = device->compositor;
1981         struct wl_buffer *buffer = NULL;
1982
1983         if (serial < device->input_device.pointer_focus_serial)
1984                 return;
1985         if (device->input_device.pointer_focus == NULL)
1986                 return;
1987         if (device->input_device.pointer_focus->resource.client != client)
1988                 return;
1989
1990         if (buffer_resource)
1991                 buffer = buffer_resource->data;
1992
1993         weston_surface_attach(&device->sprite->surface, buffer);
1994         empty_region(&device->sprite->input);
1995
1996         if (!buffer)
1997                 return;
1998
1999         if (!weston_surface_is_mapped(device->sprite)) {
2000                 wl_list_insert(&compositor->cursor_layer.surface_list,
2001                                &device->sprite->layer_link);
2002                 weston_surface_assign_output(device->sprite);
2003         }
2004
2005
2006         device->hotspot_x = x;
2007         device->hotspot_y = y;
2008         weston_surface_configure(device->sprite,
2009                                  device->input_device.x - device->hotspot_x,
2010                                  device->input_device.y - device->hotspot_y,
2011                                  buffer->width, buffer->height);
2012
2013         surface_damage(NULL, &device->sprite->surface.resource,
2014                        0, 0, buffer->width, buffer->height);
2015 }
2016
2017 static const struct wl_input_device_interface input_device_interface = {
2018         input_device_attach,
2019 };
2020
2021 static void
2022 handle_drag_surface_destroy(struct wl_listener *listener, void *data)
2023 {
2024         struct weston_input_device *device;
2025
2026         device = container_of(listener, struct weston_input_device,
2027                               drag_surface_destroy_listener);
2028
2029         device->drag_surface = NULL;
2030 }
2031
2032 static void unbind_resource(struct wl_resource *resource)
2033 {
2034         wl_list_remove(&resource->link);
2035         free(resource);
2036 }
2037
2038 static void
2039 bind_input_device(struct wl_client *client,
2040                   void *data, uint32_t version, uint32_t id)
2041 {
2042         struct wl_input_device *device = data;
2043         struct wl_resource *resource;
2044
2045         resource = wl_client_add_object(client, &wl_input_device_interface,
2046                                         &input_device_interface, id, data);
2047         wl_list_insert(&device->resource_list, &resource->link);
2048         resource->destroy = unbind_resource;
2049 }
2050
2051 static void
2052 device_handle_new_drag_icon(struct wl_listener *listener, void *data)
2053 {
2054         struct weston_input_device *device;
2055
2056         device = container_of(listener, struct weston_input_device,
2057                               new_drag_icon_listener);
2058
2059         weston_input_update_drag_surface(&device->input_device, 0, 0);
2060 }
2061
2062 WL_EXPORT void
2063 weston_input_device_init(struct weston_input_device *device,
2064                          struct weston_compositor *ec)
2065 {
2066         wl_input_device_init(&device->input_device);
2067
2068         wl_display_add_global(ec->wl_display, &wl_input_device_interface,
2069                               device, bind_input_device);
2070
2071         device->sprite = weston_surface_create(ec);
2072         device->sprite->surface.resource.data = device->sprite;
2073
2074         device->compositor = ec;
2075         device->hotspot_x = 16;
2076         device->hotspot_y = 16;
2077         device->modifier_state = 0;
2078         device->num_tp = 0;
2079
2080         device->drag_surface_destroy_listener.notify =
2081                 handle_drag_surface_destroy;
2082
2083         wl_list_insert(ec->input_device_list.prev, &device->link);
2084
2085         device->new_drag_icon_listener.notify = device_handle_new_drag_icon;
2086         wl_signal_add(&device->input_device.drag_icon_signal,
2087                       &device->new_drag_icon_listener);
2088 }
2089
2090 WL_EXPORT void
2091 weston_input_device_release(struct weston_input_device *device)
2092 {
2093         wl_list_remove(&device->link);
2094         /* The global object is destroyed at wl_display_destroy() time. */
2095
2096         if (device->sprite)
2097                 destroy_surface(&device->sprite->surface.resource);
2098
2099         wl_input_device_release(&device->input_device);
2100 }
2101
2102 static void
2103 drag_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy)
2104 {
2105         weston_surface_configure(es,
2106                                  es->geometry.x + sx, es->geometry.y + sy,
2107                                  es->buffer->width, es->buffer->height);
2108 }
2109
2110 static int
2111 device_setup_new_drag_surface(struct weston_input_device *device,
2112                               struct weston_surface *surface)
2113 {
2114         struct wl_input_device *input_device = &device->input_device;
2115
2116         if (surface->configure) {
2117                 wl_resource_post_error(&surface->surface.resource,
2118                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2119                                        "surface->configure already set");
2120                 return 0;
2121         }
2122
2123         device->drag_surface = surface;
2124
2125         weston_surface_set_position(device->drag_surface,
2126                                     input_device->x, input_device->y);
2127
2128         surface->configure = drag_surface_configure;
2129
2130         wl_signal_add(&surface->surface.resource.destroy_signal,
2131                        &device->drag_surface_destroy_listener);
2132
2133         return 1;
2134 }
2135
2136 static void
2137 device_release_drag_surface(struct weston_input_device *device)
2138 {
2139         device->drag_surface->configure = NULL;
2140         undef_region(&device->drag_surface->input);
2141         wl_list_remove(&device->drag_surface_destroy_listener.link);
2142         device->drag_surface = NULL;
2143 }
2144
2145 static void
2146 device_map_drag_surface(struct weston_input_device *device)
2147 {
2148         if (weston_surface_is_mapped(device->drag_surface) ||
2149             !device->drag_surface->buffer)
2150                 return;
2151
2152         wl_list_insert(&device->sprite->layer_link,
2153                        &device->drag_surface->layer_link);
2154         weston_surface_assign_output(device->drag_surface);
2155         empty_region(&device->drag_surface->input);
2156 }
2157
2158 static  void
2159 weston_input_update_drag_surface(struct wl_input_device *input_device,
2160                                  int dx, int dy)
2161 {
2162         int surface_changed = 0;
2163         struct weston_input_device *device = (struct weston_input_device *)
2164                 input_device;
2165
2166         if (!device->drag_surface && !input_device->drag_surface)
2167                 return;
2168
2169         if (device->drag_surface && input_device->drag_surface &&
2170             (&device->drag_surface->surface.resource !=
2171              &input_device->drag_surface->resource))
2172                 /* between calls to this funcion we got a new drag_surface */
2173                 surface_changed = 1;
2174
2175         if (!input_device->drag_surface || surface_changed) {
2176                 device_release_drag_surface(device);
2177                 if (!surface_changed)
2178                         return;
2179         }
2180
2181         if (!device->drag_surface || surface_changed) {
2182                 struct weston_surface *surface = (struct weston_surface *)
2183                         input_device->drag_surface;
2184                 if (!device_setup_new_drag_surface(device, surface))
2185                         return;
2186         }
2187
2188         /* the client may not have attached a buffer to the drag surface
2189          * when we setup it up, so check if map is needed on every update */
2190         device_map_drag_surface(device);
2191
2192         /* the client may have attached a buffer with a different size to
2193          * the drag surface, causing the input region to be reset */
2194         if (region_is_undefined(&device->drag_surface->input))
2195                 empty_region(&device->drag_surface->input);
2196
2197         if (!dx && !dy)
2198                 return;
2199
2200         weston_surface_set_position(device->drag_surface,
2201                                     device->drag_surface->geometry.x + dx,
2202                                     device->drag_surface->geometry.y + dy);
2203 }
2204
2205 WL_EXPORT void
2206 weston_compositor_update_drag_surfaces(struct weston_compositor *compositor)
2207 {
2208         weston_input_update_drag_surface(compositor->input_device, 0, 0);
2209 }
2210
2211 static void
2212 bind_output(struct wl_client *client,
2213             void *data, uint32_t version, uint32_t id)
2214 {
2215         struct weston_output *output = data;
2216         struct weston_mode *mode;
2217         struct wl_resource *resource;
2218
2219         resource = wl_client_add_object(client,
2220                                         &wl_output_interface, NULL, id, data);
2221
2222         wl_list_insert(&output->resource_list, &resource->link);
2223         resource->destroy = unbind_resource;
2224
2225         wl_output_send_geometry(resource,
2226                                 output->x,
2227                                 output->y,
2228                                 output->mm_width,
2229                                 output->mm_height,
2230                                 output->subpixel,
2231                                 output->make, output->model);
2232
2233         wl_list_for_each (mode, &output->mode_list, link) {
2234                 wl_output_send_mode(resource,
2235                                     mode->flags,
2236                                     mode->width,
2237                                     mode->height,
2238                                     mode->refresh);
2239         }
2240 }
2241
2242 static const char vertex_shader[] =
2243         "uniform mat4 proj;\n"
2244         "attribute vec2 position;\n"
2245         "attribute vec2 texcoord;\n"
2246         "varying vec2 v_texcoord;\n"
2247         "void main()\n"
2248         "{\n"
2249         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
2250         "   v_texcoord = texcoord;\n"
2251         "}\n";
2252
2253 static const char texture_fragment_shader[] =
2254         "precision mediump float;\n"
2255         "varying vec2 v_texcoord;\n"
2256         "uniform sampler2D tex;\n"
2257         "uniform float alpha;\n"
2258         "uniform float bright;\n"
2259         "uniform float saturation;\n"
2260         "uniform float texwidth;\n"
2261         "void main()\n"
2262         "{\n"
2263         "   if (v_texcoord.x < 0.0 || v_texcoord.x > texwidth ||\n"
2264         "       v_texcoord.y < 0.0 || v_texcoord.y > 1.0)\n"
2265         "      discard;\n"
2266         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
2267         "   float gray = dot(gl_FragColor.rgb, vec3(0.299, 0.587, 0.114));\n"
2268         "   vec3 range = (gl_FragColor.rgb - vec3 (gray, gray, gray)) * saturation;\n"
2269         "   gl_FragColor = vec4(vec3(gray + range), gl_FragColor.a);\n"
2270         "   gl_FragColor = vec4(vec3(bright, bright, bright) * gl_FragColor.rgb, gl_FragColor.a);\n"
2271         "   gl_FragColor = alpha * gl_FragColor;\n"
2272         "}\n";
2273
2274 static const char solid_fragment_shader[] =
2275         "precision mediump float;\n"
2276         "uniform vec4 color;\n"
2277         "uniform float alpha;\n"
2278         "void main()\n"
2279         "{\n"
2280         "   gl_FragColor = alpha * color\n;"
2281         "}\n";
2282
2283 static int
2284 compile_shader(GLenum type, const char *source)
2285 {
2286         GLuint s;
2287         char msg[512];
2288         GLint status;
2289
2290         s = glCreateShader(type);
2291         glShaderSource(s, 1, &source, NULL);
2292         glCompileShader(s);
2293         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
2294         if (!status) {
2295                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
2296                 fprintf(stderr, "shader info: %s\n", msg);
2297                 return GL_NONE;
2298         }
2299
2300         return s;
2301 }
2302
2303 static int
2304 weston_shader_init(struct weston_shader *shader,
2305                    const char *vertex_source, const char *fragment_source)
2306 {
2307         char msg[512];
2308         GLint status;
2309
2310         shader->vertex_shader =
2311                 compile_shader(GL_VERTEX_SHADER, vertex_source);
2312         shader->fragment_shader =
2313                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
2314
2315         shader->program = glCreateProgram();
2316         glAttachShader(shader->program, shader->vertex_shader);
2317         glAttachShader(shader->program, shader->fragment_shader);
2318         glBindAttribLocation(shader->program, 0, "position");
2319         glBindAttribLocation(shader->program, 1, "texcoord");
2320
2321         glLinkProgram(shader->program);
2322         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
2323         if (!status) {
2324                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
2325                 fprintf(stderr, "link info: %s\n", msg);
2326                 return -1;
2327         }
2328
2329         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
2330         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
2331         shader->alpha_uniform = glGetUniformLocation(shader->program, "alpha");
2332         shader->brightness_uniform = glGetUniformLocation(shader->program, "bright");
2333         shader->saturation_uniform = glGetUniformLocation(shader->program, "saturation");
2334         shader->color_uniform = glGetUniformLocation(shader->program, "color");
2335         shader->texwidth_uniform = glGetUniformLocation(shader->program,
2336                                                         "texwidth");
2337
2338         return 0;
2339 }
2340
2341 WL_EXPORT void
2342 weston_output_destroy(struct weston_output *output)
2343 {
2344         struct weston_compositor *c = output->compositor;
2345
2346         pixman_region32_fini(&output->region);
2347         pixman_region32_fini(&output->previous_damage);
2348         output->compositor->output_id_pool &= ~(1 << output->id);
2349
2350         wl_display_remove_global(c->wl_display, output->global);
2351 }
2352
2353 WL_EXPORT void
2354 weston_output_update_zoom(struct weston_output *output, int x, int y)
2355 {
2356         float ratio;
2357
2358         if (output->zoom.level <= 0)
2359                 return;
2360
2361         output->zoom.magnification = 1 / output->zoom.level;
2362         ratio = 1 - (1 / output->zoom.magnification);
2363
2364         output->zoom.trans_x = (((float)(x - output->x) / output->current->width) * (ratio * 2)) - ratio;
2365         output->zoom.trans_y = (((float)(y - output->y) / output->current->height) * (ratio * 2)) - ratio;
2366
2367         output->dirty = 1;
2368         weston_output_damage(output);
2369 }
2370
2371 WL_EXPORT void
2372 weston_output_update_matrix(struct weston_output *output)
2373 {
2374         int flip;
2375         struct weston_matrix camera;
2376         struct weston_matrix modelview;
2377
2378         weston_matrix_init(&output->matrix);
2379         weston_matrix_translate(&output->matrix,
2380                                 -(output->x + (output->border.right + output->current->width - output->border.left) / 2.0),
2381                                 -(output->y + (output->border.bottom + output->current->height - output->border.top) / 2.0), 0);
2382
2383         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
2384         weston_matrix_scale(&output->matrix,
2385                             2.0 / (output->current->width + output->border.left + output->border.right),
2386                             flip * 2.0 / (output->current->height + output->border.top + output->border.bottom), 1);
2387         if (output->zoom.active) {
2388                 weston_matrix_init(&camera);
2389                 weston_matrix_init(&modelview);
2390                 weston_matrix_translate(&camera, output->zoom.trans_x, flip * output->zoom.trans_y, 0);
2391                 weston_matrix_invert(&modelview, &camera);
2392                 weston_matrix_scale(&modelview, output->zoom.magnification, output->zoom.magnification, 1.0);
2393                 weston_matrix_multiply(&output->matrix, &modelview);
2394         }
2395
2396         output->dirty = 0;
2397 }
2398
2399 WL_EXPORT void
2400 weston_output_move(struct weston_output *output, int x, int y)
2401 {
2402         output->x = x;
2403         output->y = y;
2404
2405         pixman_region32_init(&output->previous_damage);
2406         pixman_region32_init_rect(&output->region, x, y,
2407                                   output->current->width,
2408                                   output->current->height);
2409 }
2410
2411 WL_EXPORT void
2412 weston_output_init(struct weston_output *output, struct weston_compositor *c,
2413                    int x, int y, int width, int height, uint32_t flags)
2414 {
2415         output->compositor = c;
2416         output->x = x;
2417         output->y = y;
2418         output->border.top = 0;
2419         output->border.bottom = 0;
2420         output->border.left = 0;
2421         output->border.right = 0;
2422         output->mm_width = width;
2423         output->mm_height = height;
2424         output->dirty = 1;
2425         wl_list_init(&output->read_pixels_list);
2426
2427         output->zoom.active = 0;
2428         output->zoom.increment = 0.05;
2429         output->zoom.level = 1.0;
2430         output->zoom.magnification = 1.0;
2431         output->zoom.trans_x = 0.0;
2432         output->zoom.trans_y = 0.0;
2433
2434         output->flags = flags;
2435         weston_output_move(output, x, y);
2436         weston_output_damage(output);
2437
2438         wl_list_init(&output->frame_callback_list);
2439         wl_list_init(&output->resource_list);
2440
2441         output->id = ffs(~output->compositor->output_id_pool) - 1;
2442         output->compositor->output_id_pool |= 1 << output->id;
2443
2444         output->global =
2445                 wl_display_add_global(c->wl_display, &wl_output_interface,
2446                                       output, bind_output);
2447 }
2448
2449 WL_EXPORT void
2450 weston_output_do_read_pixels(struct weston_output *output)
2451 {
2452         struct weston_read_pixels *r, *next;
2453
2454         glPixelStorei(GL_PACK_ALIGNMENT, 1);
2455         wl_list_for_each_safe(r, next, &output->read_pixels_list, link) {
2456                 glReadPixels(r->x, r->y, r->width, r->height,
2457                              output->compositor->read_format,
2458                              GL_UNSIGNED_BYTE, r->data);
2459                 r->done(r, output);
2460         }
2461 }
2462
2463 static void
2464 compositor_bind(struct wl_client *client,
2465                 void *data, uint32_t version, uint32_t id)
2466 {
2467         struct weston_compositor *compositor = data;
2468
2469         wl_client_add_object(client, &wl_compositor_interface,
2470                              &compositor_interface, id, compositor);
2471 }
2472
2473 WL_EXPORT int
2474 weston_compositor_init(struct weston_compositor *ec, struct wl_display *display)
2475 {
2476         struct wl_event_loop *loop;
2477         const char *extensions;
2478
2479         ec->wl_display = display;
2480         wl_signal_init(&ec->destroy_signal);
2481         wl_signal_init(&ec->activate_signal);
2482         wl_signal_init(&ec->lock_signal);
2483         wl_signal_init(&ec->unlock_signal);
2484         ec->launcher_sock = weston_environment_get_fd("WESTON_LAUNCHER_SOCK");
2485
2486         ec->output_id_pool = 0;
2487
2488         if (!wl_display_add_global(display, &wl_compositor_interface,
2489                                    ec, compositor_bind))
2490                 return -1;
2491
2492         wl_display_init_shm(display);
2493
2494         ec->image_target_texture_2d =
2495                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
2496         ec->image_target_renderbuffer_storage = (void *)
2497                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
2498         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
2499         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
2500         ec->bind_display =
2501                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
2502         ec->unbind_display =
2503                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
2504
2505         extensions = (const char *) glGetString(GL_EXTENSIONS);
2506         if (!extensions) {
2507                 fprintf(stderr, "Retrieving GL extension string failed.\n");
2508                 return -1;
2509         }
2510
2511         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
2512                 fprintf(stderr,
2513                         "GL_EXT_texture_format_BGRA8888 not available\n");
2514                 return -1;
2515         }
2516
2517         if (strstr(extensions, "GL_EXT_read_format_bgra"))
2518                 ec->read_format = GL_BGRA_EXT;
2519         else
2520                 ec->read_format = GL_RGBA;
2521
2522         if (strstr(extensions, "GL_EXT_unpack_subimage"))
2523                 ec->has_unpack_subimage = 1;
2524
2525         extensions =
2526                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
2527         if (!extensions) {
2528                 fprintf(stderr, "Retrieving EGL extension string failed.\n");
2529                 return -1;
2530         }
2531
2532         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
2533                 ec->has_bind_display = 1;
2534         if (ec->has_bind_display)
2535                 ec->bind_display(ec->display, ec->wl_display);
2536
2537         wl_list_init(&ec->surface_list);
2538         wl_list_init(&ec->layer_list);
2539         wl_list_init(&ec->input_device_list);
2540         wl_list_init(&ec->output_list);
2541         wl_list_init(&ec->binding_list);
2542         wl_list_init(&ec->animation_list);
2543         weston_spring_init(&ec->fade.spring, 30.0, 1.0, 1.0);
2544         ec->fade.animation.frame = fade_frame;
2545         wl_list_init(&ec->fade.animation.link);
2546
2547         weston_layer_init(&ec->fade_layer, &ec->layer_list);
2548         weston_layer_init(&ec->cursor_layer, &ec->fade_layer.link);
2549
2550         screenshooter_create(ec);
2551
2552         ec->ping_handler = NULL;
2553
2554         wl_data_device_manager_init(ec->wl_display);
2555
2556         glActiveTexture(GL_TEXTURE0);
2557
2558         if (weston_shader_init(&ec->texture_shader,
2559                              vertex_shader, texture_fragment_shader) < 0)
2560                 return -1;
2561         if (weston_shader_init(&ec->solid_shader,
2562                              vertex_shader, solid_fragment_shader) < 0)
2563                 return -1;
2564
2565         loop = wl_display_get_event_loop(ec->wl_display);
2566         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
2567         wl_event_source_timer_update(ec->idle_source, ec->idle_time * 1000);
2568
2569         ec->input_loop = wl_event_loop_create();
2570
2571         weston_compositor_schedule_repaint(ec);
2572
2573         return 0;
2574 }
2575
2576 WL_EXPORT void
2577 weston_compositor_shutdown(struct weston_compositor *ec)
2578 {
2579         struct weston_output *output, *next;
2580
2581         wl_event_source_remove(ec->idle_source);
2582         if (ec->input_loop_source)
2583                 wl_event_source_remove(ec->input_loop_source);
2584
2585         /* Destroy all outputs associated with this compositor */
2586         wl_list_for_each_safe(output, next, &ec->output_list, link)
2587                 output->destroy(output);
2588
2589         weston_binding_list_destroy_all(&ec->binding_list);
2590
2591         wl_array_release(&ec->vertices);
2592         wl_array_release(&ec->indices);
2593
2594         wl_event_loop_destroy(ec->input_loop);
2595 }
2596
2597 static int on_term_signal(int signal_number, void *data)
2598 {
2599         struct wl_display *display = data;
2600
2601         fprintf(stderr, "caught signal %d\n", signal_number);
2602         wl_display_terminate(display);
2603
2604         return 1;
2605 }
2606
2607 static void
2608 on_segv_signal(int s, siginfo_t *siginfo, void *context)
2609 {
2610         void *buffer[32];
2611         int i, count;
2612         Dl_info info;
2613
2614         fprintf(stderr, "caught segv\n");
2615
2616         count = backtrace(buffer, ARRAY_LENGTH(buffer));
2617         for (i = 0; i < count; i++) {
2618                 dladdr(buffer[i], &info);
2619                 fprintf(stderr, "  [%016lx]  %s  (%s)\n",
2620                         (long) buffer[i],
2621                         info.dli_sname ? info.dli_sname : "--",
2622                         info.dli_fname);
2623         }
2624
2625         longjmp(segv_jmp_buf, 1);
2626 }
2627
2628
2629 static void *
2630 load_module(const char *name, const char *entrypoint, void **handle)
2631 {
2632         char path[PATH_MAX];
2633         void *module, *init;
2634
2635         if (name[0] != '/')
2636                 snprintf(path, sizeof path, MODULEDIR "/%s", name);
2637         else
2638                 snprintf(path, sizeof path, "%s", name);
2639
2640         module = dlopen(path, RTLD_LAZY);
2641         if (!module) {
2642                 fprintf(stderr,
2643                         "failed to load module '%s': %s\n", path, dlerror());
2644                 return NULL;
2645         }
2646
2647         init = dlsym(module, entrypoint);
2648         if (!init) {
2649                 fprintf(stderr,
2650                         "failed to lookup init function in '%s': %s\n",
2651                         path, dlerror());
2652                 return NULL;
2653         }
2654
2655         return init;
2656 }
2657
2658 int main(int argc, char *argv[])
2659 {
2660         struct wl_display *display;
2661         struct weston_compositor *ec;
2662         struct wl_event_source *signals[4];
2663         struct wl_event_loop *loop;
2664         struct sigaction segv_action;
2665         void *shell_module, *backend_module, *xserver_module;
2666         int (*module_init)(struct weston_compositor *ec);
2667         struct weston_compositor
2668                 *(*backend_init)(struct wl_display *display,
2669                                  int argc, char *argv[]);
2670         int i;
2671         char *backend = NULL;
2672         char *shell = NULL;
2673         char *module = NULL;
2674         int32_t idle_time = 300;
2675         int32_t xserver = 0;
2676         char *socket_name = NULL;
2677         char *config_file;
2678
2679         const struct config_key shell_config_keys[] = {
2680                 { "type", CONFIG_KEY_STRING, &shell },
2681         };
2682
2683         const struct config_section cs[] = {
2684                 { "shell",
2685                   shell_config_keys, ARRAY_LENGTH(shell_config_keys) },
2686         };
2687
2688         const struct weston_option core_options[] = {
2689                 { WESTON_OPTION_STRING, "backend", 'B', &backend },
2690                 { WESTON_OPTION_STRING, "socket", 'S', &socket_name },
2691                 { WESTON_OPTION_INTEGER, "idle-time", 'i', &idle_time },
2692                 { WESTON_OPTION_BOOLEAN, "xserver", 0, &xserver },
2693                 { WESTON_OPTION_STRING, "module", 0, &module },
2694         };
2695
2696         argc = parse_options(core_options,
2697                              ARRAY_LENGTH(core_options), argc, argv);
2698
2699         display = wl_display_create();
2700
2701         loop = wl_display_get_event_loop(display);
2702         signals[0] = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal,
2703                                               display);
2704         signals[1] = wl_event_loop_add_signal(loop, SIGINT, on_term_signal,
2705                                               display);
2706         signals[2] = wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal,
2707                                               display);
2708
2709         wl_list_init(&child_process_list);
2710         signals[3] = wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler,
2711                                               NULL);
2712
2713         segv_action.sa_flags = SA_SIGINFO | SA_RESETHAND;
2714         segv_action.sa_sigaction = on_segv_signal;
2715         sigemptyset(&segv_action.sa_mask);
2716         sigaction(SIGSEGV, &segv_action, NULL);
2717
2718         if (!backend) {
2719                 if (getenv("WAYLAND_DISPLAY"))
2720                         backend = "wayland-backend.so";
2721                 else if (getenv("DISPLAY"))
2722                         backend = "x11-backend.so";
2723                 else if (getenv("OPENWFD"))
2724                         backend = "openwfd-backend.so";
2725                 else
2726                         backend = "drm-backend.so";
2727         }
2728
2729         config_file = config_file_path("weston.ini");
2730         parse_config_file(config_file, cs, ARRAY_LENGTH(cs), shell);
2731         free(config_file);
2732
2733         backend_init = load_module(backend, "backend_init", &backend_module);
2734         if (!backend_init)
2735                 exit(EXIT_FAILURE);
2736
2737         ec = backend_init(display, argc, argv);
2738         if (ec == NULL) {
2739                 fprintf(stderr, "failed to create compositor\n");
2740                 exit(EXIT_FAILURE);
2741         }
2742
2743         for (i = 1; argv[i]; i++)
2744                 fprintf(stderr, "unhandled option: %s\n", argv[i]);
2745         if (argv[1])
2746                 exit(EXIT_FAILURE);
2747
2748         ec->option_idle_time = idle_time;
2749         ec->idle_time = idle_time;
2750
2751         module_init = NULL;
2752         if (xserver)
2753                 module_init = load_module("xserver-launcher.so",
2754                                           "weston_xserver_init",
2755                                           &xserver_module);
2756         if (module_init && module_init(ec) < 0)
2757                 exit(EXIT_FAILURE);
2758
2759         if (!shell)
2760                 shell = "desktop-shell.so";
2761         module_init = load_module(shell, "shell_init", &shell_module);
2762         if (!module_init || module_init(ec) < 0)
2763                 exit(EXIT_FAILURE);
2764
2765
2766         module_init = NULL;
2767         if (module)
2768                 module_init = load_module(module, "module_init", NULL);
2769         if (module_init && module_init(ec) < 0)
2770                 exit(EXIT_FAILURE);
2771
2772         if (wl_display_add_socket(display, socket_name)) {
2773                 fprintf(stderr, "failed to add socket: %m\n");
2774                 exit(EXIT_FAILURE);
2775         }
2776
2777         weston_compositor_dpms_on(ec);
2778         weston_compositor_wake(ec);
2779         if (setjmp(segv_jmp_buf) == 0)
2780                 wl_display_run(display);
2781
2782         /* prevent further rendering while shutting down */
2783         ec->state = WESTON_COMPOSITOR_SLEEPING;
2784
2785         wl_signal_emit(&ec->destroy_signal, ec);
2786
2787         if (ec->has_bind_display)
2788                 ec->unbind_display(ec->display, display);
2789
2790         for (i = ARRAY_LENGTH(signals); i;)
2791                 wl_event_source_remove(signals[--i]);
2792
2793         ec->destroy(ec);
2794         wl_display_destroy(display);
2795
2796         return 0;
2797 }