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                                wl_fixed_t x, wl_fixed_t y,
 604                                wl_fixed_t *sx, wl_fixed_t *sy)
 605 {
 606         struct weston_surface *surface;
 607
 608         wl_list_for_each(surface, &compositor->surface_list, link) {
 609                 weston_surface_from_global_fixed(surface, x, y, sx, sy);
 610                 if (pixman_region32_contains_point(&surface->input,
 611                                                    wl_fixed_to_int(*sx),
 612                                                    wl_fixed_to_int(*sy),
 613                                                    NULL))
 614                         return surface;
 615         }
 616
 617         return NULL;
 618 }
 619
 620 static void
 621 weston_device_repick(struct wl_input_device *device)
 622 {
 623         struct weston_input_device *wd = (struct weston_input_device *) device;
 624         const struct wl_pointer_grab_interface *interface;
 625         struct weston_surface *surface, *focus;
 626
 627         surface = weston_compositor_pick_surface(wd->compositor,
 628                                                  device->x, device->y,
 629                                                  &device->current_x,
 630                                                  &device->current_y);
 631
 632         if (&surface->surface != device->current) {
 633                 interface = device->pointer_grab->interface;
 634                 interface->focus(device->pointer_grab, &surface->surface,
 635                                  device->current_x, device->current_y);
 636                 device->current = &surface->surface;
 637         }
 638
 639         focus = (struct weston_surface *) device->pointer_grab->focus;
 640         if (focus)
 641                 weston_surface_from_global_fixed(focus, device->x, device->y,
 642                                                  &device->pointer_grab->x,
 643                                                  &device->pointer_grab->y);
 644 }
 645
 646 WL_EXPORT void
 647 weston_compositor_repick(struct weston_compositor *compositor)
 648 {
 649         struct weston_input_device *device;
 650
 651         if (!compositor->focus)
 652                 return;
 653
 654         wl_list_for_each(device, &compositor->input_device_list, link)
 655                 weston_device_repick(&device->input_device);
 656 }
 657
 658 static void
 659 weston_surface_unmap(struct weston_surface *surface)
 660 {
 661         struct wl_input_device *device = surface->compositor->input_device;
 662
 663         weston_surface_damage_below(surface);
 664         surface->output = NULL;
 665         wl_list_remove(&surface->link);
 666         wl_list_remove(&surface->layer_link);
 667
 668         if (device->keyboard_focus == &surface->surface)
 669                 wl_input_device_set_keyboard_focus(device, NULL);
 670         if (device->pointer_focus == &surface->surface)
 671                 wl_input_device_set_pointer_focus(device, NULL,
 672                                                   wl_fixed_from_int(0),
 673                                                   wl_fixed_from_int(0));
 674
 675         weston_compositor_schedule_repaint(surface->compositor);
 676 }
 677
 678 static void
 679 destroy_surface(struct wl_resource *resource)
 680 {
 681         struct weston_surface *surface =
 682                 container_of(resource,
 683                              struct weston_surface, surface.resource);
 684         struct weston_compositor *compositor = surface->compositor;
 685
 686         if (weston_surface_is_mapped(surface))
 687                 weston_surface_unmap(surface);
 688
 689         if (surface->texture)
 690                 glDeleteTextures(1, &surface->texture);
 691
 692         if (surface->buffer)
 693                 wl_list_remove(&surface->buffer_destroy_listener.link);
 694
 695         if (surface->image != EGL_NO_IMAGE_KHR)
 696                 compositor->destroy_image(compositor->display,
 697                                           surface->image);
 698
 699         pixman_region32_fini(&surface->transform.boundingbox);
 700         pixman_region32_fini(&surface->damage);
 701         pixman_region32_fini(&surface->opaque);
 702         pixman_region32_fini(&surface->clip);
 703         if (!region_is_undefined(&surface->input))
 704                 pixman_region32_fini(&surface->input);
 705
 706         free(surface);
 707 }
 708
 709 WL_EXPORT void
 710 weston_surface_destroy(struct weston_surface *surface)
 711 {
 712         /* Not a valid way to destroy a client surface */
 713         assert(surface->surface.resource.client == NULL);
 714
 715         destroy_surface(&surface->surface.resource);
 716 }
 717
 718 static void
 719 weston_surface_attach(struct wl_surface *surface, struct wl_buffer *buffer)
 720 {
 721         struct weston_surface *es = (struct weston_surface *) surface;
 722         struct weston_compositor *ec = es->compositor;
 723
 724         if (es->buffer) {
 725                 weston_buffer_post_release(es->buffer);
 726                 wl_list_remove(&es->buffer_destroy_listener.link);
 727         }
 728
 729         es->buffer = buffer;
 730
 731         if (!buffer) {
 732                 if (weston_surface_is_mapped(es))
 733                         weston_surface_unmap(es);
 734                 return;
 735         }
 736
 737         buffer->busy_count++;
 738         wl_signal_add(&es->buffer->resource.destroy_signal,
 739                       &es->buffer_destroy_listener);
 740
 741         if (es->geometry.width != buffer->width ||
 742             es->geometry.height != buffer->height) {
 743                 undef_region(&es->input);
 744                 pixman_region32_fini(&es->opaque);
 745                 pixman_region32_init(&es->opaque);
 746         }
 747
 748         if (!es->texture) {
 749                 glGenTextures(1, &es->texture);
 750                 glBindTexture(GL_TEXTURE_2D, es->texture);
 751                 glTexParameteri(GL_TEXTURE_2D,
 752                                 GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 753                 glTexParameteri(GL_TEXTURE_2D,
 754                                 GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 755                 es->shader = &ec->texture_shader;
 756         } else {
 757                 glBindTexture(GL_TEXTURE_2D, es->texture);
 758         }
 759
 760         if (wl_buffer_is_shm(buffer)) {
 761                 es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
 762                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 763                              es->pitch, es->buffer->height, 0,
 764                              GL_BGRA_EXT, GL_UNSIGNED_BYTE, NULL);
 765         } else {
 766                 if (es->image != EGL_NO_IMAGE_KHR)
 767                         ec->destroy_image(ec->display, es->image);
 768                 es->image = ec->create_image(ec->display, NULL,
 769                                              EGL_WAYLAND_BUFFER_WL,
 770                                              buffer, NULL);
 771
 772                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 773
 774                 es->pitch = buffer->width;
 775         }
 776 }
 777
 778 static int
 779 texture_region(struct weston_surface *es, pixman_region32_t *region)
 780 {
 781         struct weston_compositor *ec = es->compositor;
 782         GLfloat *v, inv_width, inv_height;
 783         GLfloat sx, sy;
 784         pixman_box32_t *rectangles;
 785         unsigned int *p;
 786         int i, n;
 787
 788         rectangles = pixman_region32_rectangles(region, &n);
 789         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 790         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 791         inv_width = 1.0 / es->pitch;
 792         inv_height = 1.0 / es->geometry.height;
 793
 794         for (i = 0; i < n; i++, v += 16, p += 6) {
 795                 surface_from_global_float(es, rectangles[i].x1,
 796                                           rectangles[i].y1, &sx, &sy);
 797                 v[ 0] = rectangles[i].x1;
 798                 v[ 1] = rectangles[i].y1;
 799                 v[ 2] = sx * inv_width;
 800                 v[ 3] = sy * inv_height;
 801
 802                 surface_from_global_float(es, rectangles[i].x1,
 803                                           rectangles[i].y2, &sx, &sy);
 804                 v[ 4] = rectangles[i].x1;
 805                 v[ 5] = rectangles[i].y2;
 806                 v[ 6] = sx * inv_width;
 807                 v[ 7] = sy * inv_height;
 808
 809                 surface_from_global_float(es, rectangles[i].x2,
 810                                           rectangles[i].y1, &sx, &sy);
 811                 v[ 8] = rectangles[i].x2;
 812                 v[ 9] = rectangles[i].y1;
 813                 v[10] = sx * inv_width;
 814                 v[11] = sy * inv_height;
 815
 816                 surface_from_global_float(es, rectangles[i].x2,
 817                                           rectangles[i].y2, &sx, &sy);
 818                 v[12] = rectangles[i].x2;
 819                 v[13] = rectangles[i].y2;
 820                 v[14] = sx * inv_width;
 821                 v[15] = sy * inv_height;
 822
 823                 p[0] = i * 4 + 0;
 824                 p[1] = i * 4 + 1;
 825                 p[2] = i * 4 + 2;
 826                 p[3] = i * 4 + 2;
 827                 p[4] = i * 4 + 1;
 828                 p[5] = i * 4 + 3;
 829         }
 830
 831         return n;
 832 }
 833
 834 WL_EXPORT void
 835 weston_surface_draw(struct weston_surface *es, struct weston_output *output,
 836                     pixman_region32_t *damage)
 837 {
 838         struct weston_compositor *ec = es->compositor;
 839         GLfloat *v;
 840         pixman_region32_t repaint;
 841         GLint filter;
 842         int n;
 843
 844         pixman_region32_init(&repaint);
 845         pixman_region32_intersect(&repaint,
 846                                   &es->transform.boundingbox, damage);
 847         pixman_region32_subtract(&repaint, &repaint, &es->clip);
 848
 849         if (!pixman_region32_not_empty(&repaint))
 850                 goto out;
 851
 852         glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 853         glEnable(GL_BLEND);
 854
 855         if (ec->current_shader != es->shader) {
 856                 glUseProgram(es->shader->program);
 857                 ec->current_shader = es->shader;
 858         }
 859
 860         glUniformMatrix4fv(es->shader->proj_uniform,
 861                            1, GL_FALSE, output->matrix.d);
 862         glUniform1i(es->shader->tex_uniform, 0);
 863         glUniform4fv(es->shader->color_uniform, 1, es->color);
 864         glUniform1f(es->shader->alpha_uniform, es->alpha / 255.0);
 865         glUniform1f(es->shader->brightness_uniform, es->brightness / 255.0);
 866         glUniform1f(es->shader->saturation_uniform, es->saturation / 255.0);
 867         glUniform1f(es->shader->texwidth_uniform,
 868                     (GLfloat)es->geometry.width / es->pitch);
 869
 870         if (es->transform.enabled || output->zoom.active)
 871                 filter = GL_LINEAR;
 872         else
 873                 filter = GL_NEAREST;
 874
 875         n = texture_region(es, &repaint);
 876
 877         glBindTexture(GL_TEXTURE_2D, es->texture);
 878         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
 879         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
 880
 881         v = ec->vertices.data;
 882         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 883         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 884         glEnableVertexAttribArray(0);
 885         glEnableVertexAttribArray(1);
 886
 887         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 888
 889         glDisableVertexAttribArray(1);
 890         glDisableVertexAttribArray(0);
 891
 892         ec->vertices.size = 0;
 893         ec->indices.size = 0;
 894
 895 out:
 896         pixman_region32_fini(&repaint);
 897 }
 898
 899 WL_EXPORT void
 900 weston_surface_restack(struct weston_surface *surface, struct wl_list *below)
 901 {
 902         wl_list_remove(&surface->layer_link);
 903         wl_list_insert(below, &surface->layer_link);
 904         weston_surface_damage_below(surface);
 905         weston_surface_damage(surface);
 906 }
 907
 908 WL_EXPORT void
 909 weston_compositor_damage_all(struct weston_compositor *compositor)
 910 {
 911         struct weston_output *output;
 912
 913         wl_list_for_each(output, &compositor->output_list, link)
 914                 weston_output_damage(output);
 915 }
 916
 917 WL_EXPORT void
 918 weston_buffer_post_release(struct wl_buffer *buffer)
 919 {
 920         if (--buffer->busy_count > 0)
 921                 return;
 922
 923         assert(buffer->resource.client != NULL);
 924         wl_resource_queue_event(&buffer->resource, WL_BUFFER_RELEASE);
 925 }
 926
 927 WL_EXPORT void
 928 weston_output_damage(struct weston_output *output)
 929 {
 930         struct weston_compositor *compositor = output->compositor;
 931
 932         pixman_region32_union(&compositor->damage,
 933                               &compositor->damage, &output->region);
 934         weston_compositor_schedule_repaint(compositor);
 935 }
 936
 937 static void
 938 fade_frame(struct weston_animation *animation,
 939            struct weston_output *output, uint32_t msecs)
 940 {
 941         struct weston_compositor *compositor =
 942                 container_of(animation,
 943                              struct weston_compositor, fade.animation);
 944         struct weston_surface *surface;
 945
 946         surface = compositor->fade.surface;
 947         weston_spring_update(&compositor->fade.spring, msecs);
 948         weston_surface_set_color(surface, 0.0, 0.0, 0.0,
 949                                  compositor->fade.spring.current);
 950         weston_surface_damage(surface);
 951
 952         if (weston_spring_done(&compositor->fade.spring)) {
 953                 compositor->fade.spring.current =
 954                         compositor->fade.spring.target;
 955                 wl_list_remove(&animation->link);
 956                 wl_list_init(&animation->link);
 957
 958                 if (compositor->fade.spring.current < 0.001) {
 959                         destroy_surface(&surface->surface.resource);
 960                         compositor->fade.surface = NULL;
 961                 } else if (compositor->fade.spring.current > 0.999) {
 962                         compositor->state = WESTON_COMPOSITOR_SLEEPING;
 963                         wl_signal_emit(&compositor->lock_signal, compositor);
 964                 }
 965         }
 966 }
 967
 968 struct weston_frame_callback {
 969         struct wl_resource resource;
 970         struct wl_list link;
 971 };
 972
 973 static void
 974 weston_output_repaint(struct weston_output *output, int msecs)
 975 {
 976         struct weston_compositor *ec = output->compositor;
 977         struct weston_surface *es;
 978         struct weston_layer *layer;
 979         struct weston_animation *animation, *next;
 980         struct weston_frame_callback *cb, *cnext;
 981         pixman_region32_t opaque, new_damage, output_damage;
 982         int32_t width, height;
 983
 984         weston_compositor_update_drag_surfaces(ec);
 985
 986         width = output->current->width +
 987                 output->border.left + output->border.right;
 988         height = output->current->height +
 989                 output->border.top + output->border.bottom;
 990         glViewport(0, 0, width, height);
 991
 992         /* Rebuild the surface list and update surface transforms up front. */
 993         wl_list_init(&ec->surface_list);
 994         wl_list_for_each(layer, &ec->layer_list, link) {
 995                 wl_list_for_each(es, &layer->surface_list, layer_link) {
 996                         weston_surface_update_transform(es);
 997                         wl_list_insert(ec->surface_list.prev, &es->link);
 998                 }
 999         }
1000
1001         if (output->assign_planes)
1002                 /*
1003                  * This will queue flips for the fbs and sprites where
1004                  * applicable and clear the damage for those surfaces.
1005                  * The repaint loop below will repaint everything
1006                  * else.
1007                  */
1008                 output->assign_planes(output);
1009
1010         pixman_region32_init(&new_damage);
1011         pixman_region32_init(&opaque);
1012
1013         wl_list_for_each(es, &ec->surface_list, link) {
1014                 pixman_region32_subtract(&es->damage, &es->damage, &opaque);
1015                 pixman_region32_union(&new_damage, &new_damage, &es->damage);
1016                 empty_region(&es->damage);
1017                 pixman_region32_copy(&es->clip, &opaque);
1018                 pixman_region32_union(&opaque, &opaque, &es->transform.opaque);
1019         }
1020
1021         pixman_region32_union(&ec->damage, &ec->damage, &new_damage);
1022
1023         pixman_region32_init(&output_damage);
1024         pixman_region32_union(&output_damage,
1025                               &ec->damage, &output->previous_damage);
1026         pixman_region32_copy(&output->previous_damage, &ec->damage);
1027         pixman_region32_intersect(&output_damage,
1028                                   &output_damage, &output->region);
1029         pixman_region32_subtract(&ec->damage, &ec->damage, &output->region);
1030
1031         pixman_region32_fini(&opaque);
1032         pixman_region32_fini(&new_damage);
1033
1034         if (output->dirty)
1035                 weston_output_update_matrix(output);
1036
1037         output->repaint(output, &output_damage);
1038
1039         pixman_region32_fini(&output_damage);
1040
1041         output->repaint_needed = 0;
1042
1043         weston_compositor_repick(ec);
1044         wl_event_loop_dispatch(ec->input_loop, 0);
1045
1046         wl_list_for_each_safe(cb, cnext, &output->frame_callback_list, link) {
1047                 wl_callback_send_done(&cb->resource, msecs);
1048                 wl_resource_destroy(&cb->resource);
1049         }
1050
1051         wl_list_for_each_safe(animation, next, &ec->animation_list, link)
1052                 animation->frame(animation, output, msecs);
1053 }
1054
1055 static int
1056 weston_compositor_read_input(int fd, uint32_t mask, void *data)
1057 {
1058         struct weston_compositor *compositor = data;
1059
1060         wl_event_loop_dispatch(compositor->input_loop, 0);
1061
1062         return 1;
1063 }
1064
1065 WL_EXPORT void
1066 weston_output_finish_frame(struct weston_output *output, int msecs)
1067 {
1068         struct weston_compositor *compositor = output->compositor;
1069         struct wl_event_loop *loop =
1070                 wl_display_get_event_loop(compositor->wl_display);
1071         int fd;
1072
1073         if (output->repaint_needed) {
1074                 weston_output_repaint(output, msecs);
1075                 return;
1076         }
1077
1078         output->repaint_scheduled = 0;
1079         if (compositor->input_loop_source)
1080                 return;
1081
1082         fd = wl_event_loop_get_fd(compositor->input_loop);
1083         compositor->input_loop_source =
1084                 wl_event_loop_add_fd(loop, fd, WL_EVENT_READABLE,
1085                                      weston_compositor_read_input, compositor);
1086 }
1087
1088 static void
1089 idle_repaint(void *data)
1090 {
1091         struct weston_output *output = data;
1092
1093         weston_output_finish_frame(output, weston_compositor_get_time());
1094 }
1095
1096 WL_EXPORT void
1097 weston_layer_init(struct weston_layer *layer, struct wl_list *below)
1098 {
1099         wl_list_init(&layer->surface_list);
1100         wl_list_insert(below, &layer->link);
1101 }
1102
1103 WL_EXPORT void
1104 weston_compositor_schedule_repaint(struct weston_compositor *compositor)
1105 {
1106         struct weston_output *output;
1107         struct wl_event_loop *loop;
1108
1109         if (compositor->state == WESTON_COMPOSITOR_SLEEPING)
1110                 return;
1111
1112         loop = wl_display_get_event_loop(compositor->wl_display);
1113         wl_list_for_each(output, &compositor->output_list, link) {
1114                 output->repaint_needed = 1;
1115                 if (output->repaint_scheduled)
1116                         continue;
1117
1118                 wl_event_loop_add_idle(loop, idle_repaint, output);
1119                 output->repaint_scheduled = 1;
1120         }
1121
1122         if (compositor->input_loop_source) {
1123                 wl_event_source_remove(compositor->input_loop_source);
1124                 compositor->input_loop_source = NULL;
1125         }
1126 }
1127
1128 WL_EXPORT void
1129 weston_compositor_fade(struct weston_compositor *compositor, float tint)
1130 {
1131         struct weston_surface *surface;
1132         int done;
1133
1134         done = weston_spring_done(&compositor->fade.spring);
1135         compositor->fade.spring.target = tint;
1136         if (weston_spring_done(&compositor->fade.spring))
1137                 return;
1138
1139         if (done)
1140                 compositor->fade.spring.timestamp =
1141                         weston_compositor_get_time();
1142
1143         if (compositor->fade.surface == NULL) {
1144                 surface = weston_surface_create(compositor);
1145                 weston_surface_configure(surface, 0, 0, 8192, 8192);
1146                 weston_surface_set_color(surface, 0.0, 0.0, 0.0, 0.0);
1147                 wl_list_insert(&compositor->fade_layer.surface_list,
1148                                &surface->layer_link);
1149                 weston_surface_assign_output(surface);
1150                 compositor->fade.surface = surface;
1151                 pixman_region32_init(&surface->input);
1152         }
1153
1154         weston_surface_damage(compositor->fade.surface);
1155         if (wl_list_empty(&compositor->fade.animation.link))
1156                 wl_list_insert(compositor->animation_list.prev,
1157                                &compositor->fade.animation.link);
1158 }
1159
1160 static void
1161 surface_destroy(struct wl_client *client, struct wl_resource *resource)
1162 {
1163         wl_resource_destroy(resource);
1164 }
1165
1166 static struct wl_resource *
1167 find_resource_for_client(struct wl_list *list, struct wl_client *client)
1168 {
1169         struct wl_resource *r;
1170
1171         wl_list_for_each(r, list, link) {
1172                 if (r->client == client)
1173                         return r;
1174         }
1175
1176         return NULL;
1177 }
1178
1179 static void
1180 weston_surface_update_output_mask(struct weston_surface *es, uint32_t mask)
1181 {
1182         uint32_t different = es->output_mask ^ mask;
1183         uint32_t entered = mask & different;
1184         uint32_t left = es->output_mask & different;
1185         struct weston_output *output;
1186         struct wl_resource *resource;
1187         struct wl_client *client = es->surface.resource.client;
1188
1189         if (es->surface.resource.client == NULL)
1190                 return;
1191         if (different == 0)
1192                 return;
1193
1194         es->output_mask = mask;
1195         wl_list_for_each(output, &es->compositor->output_list, link) {
1196                 if (1 << output->id & different)
1197                         resource =
1198                                 find_resource_for_client(&output->resource_list,
1199                                                          client);
1200                 if (1 << output->id & entered)
1201                         wl_surface_send_enter(&es->surface.resource, resource);
1202                 if (1 << output->id & left)
1203                         wl_surface_send_leave(&es->surface.resource, resource);
1204         }
1205 }
1206
1207 WL_EXPORT void
1208 weston_surface_assign_output(struct weston_surface *es)
1209 {
1210         struct weston_compositor *ec = es->compositor;
1211         struct weston_output *output, *new_output;
1212         pixman_region32_t region;
1213         uint32_t max, area, mask;
1214         pixman_box32_t *e;
1215
1216         weston_surface_update_transform(es);
1217
1218         new_output = NULL;
1219         max = 0;
1220         mask = 0;
1221         pixman_region32_init(&region);
1222         wl_list_for_each(output, &ec->output_list, link) {
1223                 pixman_region32_intersect(&region, &es->transform.boundingbox,
1224                                           &output->region);
1225
1226                 e = pixman_region32_extents(&region);
1227                 area = (e->x2 - e->x1) * (e->y2 - e->y1);
1228
1229                 if (area > 0)
1230                         mask |= 1 << output->id;
1231
1232                 if (area >= max) {
1233                         new_output = output;
1234                         max = area;
1235                 }
1236         }
1237         pixman_region32_fini(&region);
1238
1239         es->output = new_output;
1240         weston_surface_update_output_mask(es, mask);
1241
1242         if (!wl_list_empty(&es->frame_callback_list)) {
1243                 wl_list_insert_list(new_output->frame_callback_list.prev,
1244                                     &es->frame_callback_list);
1245                 wl_list_init(&es->frame_callback_list);
1246         }
1247 }
1248
1249 static void
1250 surface_attach(struct wl_client *client,
1251                struct wl_resource *resource,
1252                struct wl_resource *buffer_resource, int32_t sx, int32_t sy)
1253 {
1254         struct weston_surface *es = resource->data;
1255         struct wl_buffer *buffer = NULL;
1256
1257         if (buffer_resource)
1258                 buffer = buffer_resource->data;
1259
1260         weston_surface_attach(&es->surface, buffer);
1261
1262         if (buffer && es->configure)
1263                 es->configure(es, sx, sy);
1264 }
1265
1266 static void
1267 texture_set_subimage(struct weston_surface *surface,
1268                      int32_t x, int32_t y, int32_t width, int32_t height)
1269 {
1270         glBindTexture(GL_TEXTURE_2D, surface->texture);
1271
1272 #ifdef GL_UNPACK_ROW_LENGTH
1273         /* Mesa does not define GL_EXT_unpack_subimage */
1274
1275         if (surface->compositor->has_unpack_subimage) {
1276                 glPixelStorei(GL_UNPACK_ROW_LENGTH, surface->pitch);
1277                 glPixelStorei(GL_UNPACK_SKIP_PIXELS, x);
1278                 glPixelStorei(GL_UNPACK_SKIP_ROWS, y);
1279
1280                 glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height,
1281                                 GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1282                                 wl_shm_buffer_get_data(surface->buffer));
1283                 return;
1284         }
1285 #endif
1286
1287         glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1288                      surface->pitch, surface->buffer->height, 0,
1289                      GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1290                      wl_shm_buffer_get_data(surface->buffer));
1291 }
1292
1293 static void
1294 surface_damage(struct wl_client *client,
1295                struct wl_resource *resource,
1296                int32_t x, int32_t y, int32_t width, int32_t height)
1297 {
1298         struct weston_surface *es = resource->data;
1299
1300         weston_surface_damage_rectangle(es, x, y, width, height);
1301
1302         if (es->buffer && wl_buffer_is_shm(es->buffer))
1303                 texture_set_subimage(es, x, y, width, height);
1304 }
1305
1306 static void
1307 destroy_frame_callback(struct wl_resource *resource)
1308 {
1309         struct weston_frame_callback *cb = resource->data;
1310
1311         wl_list_remove(&cb->link);
1312         free(cb);
1313 }
1314
1315 static void
1316 surface_frame(struct wl_client *client,
1317               struct wl_resource *resource, uint32_t callback)
1318 {
1319         struct weston_frame_callback *cb;
1320         struct weston_surface *es = resource->data;
1321
1322         cb = malloc(sizeof *cb);
1323         if (cb == NULL) {
1324                 wl_resource_post_no_memory(resource);
1325                 return;
1326         }
1327
1328         cb->resource.object.interface = &wl_callback_interface;
1329         cb->resource.object.id = callback;
1330         cb->resource.destroy = destroy_frame_callback;
1331         cb->resource.client = client;
1332         cb->resource.data = cb;
1333
1334         wl_client_add_resource(client, &cb->resource);
1335
1336         if (es->output) {
1337                 wl_list_insert(es->output->frame_callback_list.prev,
1338                                &cb->link);
1339         } else {
1340                 wl_list_insert(es->frame_callback_list.prev, &cb->link);
1341         }
1342 }
1343
1344 static void
1345 surface_set_opaque_region(struct wl_client *client,
1346                           struct wl_resource *resource,
1347                           struct wl_resource *region_resource)
1348 {
1349         struct weston_surface *surface = resource->data;
1350         struct weston_region *region;
1351
1352         pixman_region32_fini(&surface->opaque);
1353
1354         if (region_resource) {
1355                 region = region_resource->data;
1356                 pixman_region32_init_rect(&surface->opaque, 0, 0,
1357                                           surface->geometry.width,
1358                                           surface->geometry.height);
1359                 pixman_region32_intersect(&surface->opaque,
1360                                           &surface->opaque, &region->region);
1361         } else {
1362                 pixman_region32_init(&surface->opaque);
1363         }
1364
1365         surface->geometry.dirty = 1;
1366 }
1367
1368 static void
1369 surface_set_input_region(struct wl_client *client,
1370                          struct wl_resource *resource,
1371                          struct wl_resource *region_resource)
1372 {
1373         struct weston_surface *surface = resource->data;
1374         struct weston_region *region;
1375
1376         if (region_resource) {
1377                 region = region_resource->data;
1378                 pixman_region32_init_rect(&surface->input, 0, 0,
1379                                           surface->geometry.width,
1380                                           surface->geometry.height);
1381                 pixman_region32_intersect(&surface->input,
1382                                           &surface->input, &region->region);
1383         } else {
1384                 pixman_region32_init_rect(&surface->input, 0, 0,
1385                                           surface->geometry.width,
1386                                           surface->geometry.height);
1387         }
1388
1389         weston_compositor_schedule_repaint(surface->compositor);
1390 }
1391
1392 static const struct wl_surface_interface surface_interface = {
1393         surface_destroy,
1394         surface_attach,
1395         surface_damage,
1396         surface_frame,
1397         surface_set_opaque_region,
1398         surface_set_input_region
1399 };
1400
1401 static void
1402 compositor_create_surface(struct wl_client *client,
1403                           struct wl_resource *resource, uint32_t id)
1404 {
1405         struct weston_compositor *ec = resource->data;
1406         struct weston_surface *surface;
1407
1408         surface = weston_surface_create(ec);
1409         if (surface == NULL) {
1410                 wl_resource_post_no_memory(resource);
1411                 return;
1412         }
1413
1414         surface->surface.resource.destroy = destroy_surface;
1415
1416         surface->surface.resource.object.id = id;
1417         surface->surface.resource.object.interface = &wl_surface_interface;
1418         surface->surface.resource.object.implementation =
1419                 (void (**)(void)) &surface_interface;
1420         surface->surface.resource.data = surface;
1421
1422         wl_client_add_resource(client, &surface->surface.resource);
1423 }
1424
1425 static void
1426 destroy_region(struct wl_resource *resource)
1427 {
1428         struct weston_region *region =
1429                 container_of(resource, struct weston_region, resource);
1430
1431         pixman_region32_fini(&region->region);
1432         free(region);
1433 }
1434
1435 static void
1436 region_destroy(struct wl_client *client, struct wl_resource *resource)
1437 {
1438         wl_resource_destroy(resource);
1439 }
1440
1441 static void
1442 region_add(struct wl_client *client, struct wl_resource *resource,
1443            int32_t x, int32_t y, int32_t width, int32_t height)
1444 {
1445         struct weston_region *region = resource->data;
1446
1447         pixman_region32_union_rect(&region->region, &region->region,
1448                                    x, y, width, height);
1449 }
1450
1451 static void
1452 region_subtract(struct wl_client *client, struct wl_resource *resource,
1453                 int32_t x, int32_t y, int32_t width, int32_t height)
1454 {
1455         struct weston_region *region = resource->data;
1456         pixman_region32_t rect;
1457
1458         pixman_region32_init_rect(&rect, x, y, width, height);
1459         pixman_region32_subtract(&region->region, &region->region, &rect);
1460         pixman_region32_fini(&rect);
1461 }
1462
1463 static const struct wl_region_interface region_interface = {
1464         region_destroy,
1465         region_add,
1466         region_subtract
1467 };
1468
1469 static void
1470 compositor_create_region(struct wl_client *client,
1471                          struct wl_resource *resource, uint32_t id)
1472 {
1473         struct weston_region *region;
1474
1475         region = malloc(sizeof *region);
1476         if (region == NULL) {
1477                 wl_resource_post_no_memory(resource);
1478                 return;
1479         }
1480
1481         region->resource.destroy = destroy_region;
1482
1483         region->resource.object.id = id;
1484         region->resource.object.interface = &wl_region_interface;
1485         region->resource.object.implementation =
1486                 (void (**)(void)) &region_interface;
1487         region->resource.data = region;
1488
1489         pixman_region32_init(&region->region);
1490
1491         wl_client_add_resource(client, &region->resource);
1492 }
1493
1494 static const struct wl_compositor_interface compositor_interface = {
1495         compositor_create_surface,
1496         compositor_create_region
1497 };
1498
1499 WL_EXPORT void
1500 weston_compositor_wake(struct weston_compositor *compositor)
1501 {
1502         compositor->state = WESTON_COMPOSITOR_ACTIVE;
1503         weston_compositor_fade(compositor, 0.0);
1504
1505         wl_event_source_timer_update(compositor->idle_source,
1506                                      compositor->idle_time * 1000);
1507 }
1508
1509 static void
1510 weston_compositor_dpms_on(struct weston_compositor *compositor)
1511 {
1512         struct weston_output *output;
1513
1514         wl_list_for_each(output, &compositor->output_list, link)
1515                 if (output->set_dpms)
1516                         output->set_dpms(output, WESTON_DPMS_ON);
1517 }
1518
1519 WL_EXPORT void
1520 weston_compositor_activity(struct weston_compositor *compositor)
1521 {
1522         if (compositor->state == WESTON_COMPOSITOR_ACTIVE) {
1523                 weston_compositor_wake(compositor);
1524         } else {
1525                 weston_compositor_dpms_on(compositor);
1526                 wl_signal_emit(&compositor->unlock_signal, compositor);
1527         }
1528 }
1529
1530 static void
1531 weston_compositor_idle_inhibit(struct weston_compositor *compositor)
1532 {
1533         weston_compositor_activity(compositor);
1534         compositor->idle_inhibit++;
1535 }
1536
1537 static void
1538 weston_compositor_idle_release(struct weston_compositor *compositor)
1539 {
1540         compositor->idle_inhibit--;
1541         weston_compositor_activity(compositor);
1542 }
1543
1544 static int
1545 idle_handler(void *data)
1546 {
1547         struct weston_compositor *compositor = data;
1548
1549         if (compositor->idle_inhibit)
1550                 return 1;
1551
1552         weston_compositor_fade(compositor, 1.0);
1553
1554         return 1;
1555 }
1556
1557 static  void
1558 weston_input_update_drag_surface(struct wl_input_device *input_device,
1559                                  int dx, int dy);
1560
1561 WL_EXPORT void
1562 notify_motion(struct wl_input_device *device, uint32_t time, GLfloat x, GLfloat y)
1563 {
1564         struct weston_output *output;
1565         const struct wl_pointer_grab_interface *interface;
1566         struct weston_input_device *wd = (struct weston_input_device *) device;
1567         struct weston_compositor *ec = wd->compositor;
1568         int x_valid = 0, y_valid = 0;
1569         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1570
1571         weston_compositor_activity(ec);
1572
1573         wl_list_for_each(output, &ec->output_list, link) {
1574                 if (output->x <= x && x < output->x + output->current->width)
1575                         x_valid = 1;
1576
1577                 if (output->y <= y && y < output->y + output->current->height)
1578                         y_valid = 1;
1579
1580                 /* FIXME: calculate this only on output addition/deletion */
1581                 if (output->x < min_x)
1582                         min_x = output->x;
1583                 if (output->y < min_y)
1584                         min_y = output->y;
1585
1586                 if (output->x + output->current->width > max_x)
1587                         max_x = output->x + output->current->width - 1;
1588                 if (output->y + output->current->height > max_y)
1589                         max_y = output->y + output->current->height - 1;
1590         }
1591
1592         if (!x_valid) {
1593                 if (x < min_x)
1594                         x = min_x;
1595                 else if (x >= max_x)
1596                         x = max_x;
1597         }
1598         if (!y_valid) {
1599                 if (y < min_y)
1600                         y = min_y;
1601                 else  if (y >= max_y)
1602                         y = max_y;
1603         }
1604
1605         weston_input_update_drag_surface(device,
1606                                          x - device->x, y - device->y);
1607
1608         device->x = wl_fixed_from_double(x);
1609         device->y = wl_fixed_from_double(y);
1610
1611         wl_list_for_each(output, &ec->output_list, link)
1612                 if (output->zoom.active &&
1613                     pixman_region32_contains_point(&output->region, x, y, NULL))
1614                         weston_output_update_zoom(output, x, y);
1615
1616         weston_device_repick(device);
1617         interface = device->pointer_grab->interface;
1618         interface->motion(device->pointer_grab, time,
1619                           device->pointer_grab->x, device->pointer_grab->y);
1620
1621         x = wl_fixed_to_double(device->x);
1622         y = wl_fixed_to_double(device->y);
1623
1624         if (wd->sprite) {
1625                 weston_surface_set_position(wd->sprite,
1626                                             x - wd->hotspot_x,
1627                                             y - wd->hotspot_y);
1628                 weston_compositor_schedule_repaint(ec);
1629         }
1630 }
1631
1632 WL_EXPORT void
1633 weston_surface_activate(struct weston_surface *surface,
1634                         struct weston_input_device *device)
1635 {
1636         struct weston_compositor *compositor = device->compositor;
1637
1638         wl_input_device_set_keyboard_focus(&device->input_device,
1639                                            &surface->surface);
1640         wl_data_device_set_keyboard_focus(&device->input_device);
1641
1642         wl_signal_emit(&compositor->activate_signal, surface);
1643 }
1644
1645 WL_EXPORT void
1646 notify_button(struct wl_input_device *device,
1647               uint32_t time, int32_t button, uint32_t state)
1648 {
1649         struct weston_input_device *wd = (struct weston_input_device *) device;
1650         struct weston_compositor *compositor = wd->compositor;
1651         struct weston_surface *focus = (struct weston_surface *) device->pointer_focus;
1652         uint32_t serial = wl_display_next_serial(compositor->wl_display);
1653
1654         if (state) {
1655                 if (compositor->ping_handler && focus)
1656                         compositor->ping_handler(focus, serial);
1657                 weston_compositor_idle_inhibit(compositor);
1658                 if (device->button_count == 0) {
1659                         device->grab_button = button;
1660                         device->grab_time = time;
1661                         device->grab_x = device->x;
1662                         device->grab_y = device->y;
1663                 }
1664                 device->button_count++;
1665         } else {
1666                 weston_compositor_idle_release(compositor);
1667                 device->button_count--;
1668         }
1669
1670         weston_compositor_run_binding(compositor, wd, time, 0, button, 0, state);
1671
1672         device->pointer_grab->interface->button(device->pointer_grab, time, button, state);
1673
1674         if (device->button_count == 1)
1675                 device->grab_serial =
1676                         wl_display_get_serial(compositor->wl_display);
1677 }
1678
1679 WL_EXPORT void
1680 notify_axis(struct wl_input_device *device,
1681               uint32_t time, uint32_t axis, int32_t value)
1682 {
1683         struct weston_input_device *wd = (struct weston_input_device *) device;
1684         struct weston_compositor *compositor = wd->compositor;
1685         struct weston_surface *focus = (struct weston_surface *) device->pointer_focus;
1686         uint32_t serial = wl_display_next_serial(compositor->wl_display);
1687
1688         if (compositor->ping_handler && focus)
1689                 compositor->ping_handler(focus, serial);
1690
1691         weston_compositor_activity(compositor);
1692
1693         if (value)
1694                 weston_compositor_run_binding(compositor, wd,
1695                                                 time, 0, 0, axis, value);
1696         else
1697                 return;
1698
1699         if (device->pointer_focus_resource)
1700                 wl_resource_post_event(device->pointer_focus_resource,
1701                                 WL_INPUT_DEVICE_AXIS, time, axis, value);
1702 }
1703
1704 static void
1705 update_modifier_state(struct weston_input_device *device,
1706                       uint32_t key, uint32_t state)
1707 {
1708         uint32_t modifier;
1709
1710         switch (key) {
1711         case KEY_LEFTCTRL:
1712         case KEY_RIGHTCTRL:
1713                 modifier = MODIFIER_CTRL;
1714                 break;
1715
1716         case KEY_LEFTALT:
1717         case KEY_RIGHTALT:
1718                 modifier = MODIFIER_ALT;
1719                 break;
1720
1721         case KEY_LEFTMETA:
1722         case KEY_RIGHTMETA:
1723                 modifier = MODIFIER_SUPER;
1724                 break;
1725
1726         default:
1727                 modifier = 0;
1728                 break;
1729         }
1730
1731         if (state)
1732                 device->modifier_state |= modifier;
1733         else
1734                 device->modifier_state &= ~modifier;
1735 }
1736
1737 WL_EXPORT void
1738 notify_key(struct wl_input_device *device,
1739            uint32_t time, uint32_t key, uint32_t state)
1740 {
1741         struct weston_input_device *wd = (struct weston_input_device *) device;
1742         struct weston_compositor *compositor = wd->compositor;
1743         struct weston_surface *focus = (struct weston_surface *) device->pointer_focus;
1744         uint32_t serial = wl_display_next_serial(compositor->wl_display);
1745         uint32_t *k, *end;
1746
1747         if (state) {
1748                 if (compositor->ping_handler && focus)
1749                         compositor->ping_handler(focus, serial);
1750
1751                 weston_compositor_idle_inhibit(compositor);
1752                 device->grab_key = key;
1753                 device->grab_time = time;
1754         } else {
1755                 weston_compositor_idle_release(compositor);
1756         }
1757
1758         update_modifier_state(wd, key, state);
1759         end = device->keys.data + device->keys.size;
1760         for (k = device->keys.data; k < end; k++) {
1761                 if (*k == key)
1762                         *k = *--end;
1763         }
1764         device->keys.size = (void *) end - device->keys.data;
1765         if (state) {
1766                 k = wl_array_add(&device->keys, sizeof *k);
1767                 *k = key;
1768         }
1769
1770         if (device->keyboard_grab == &device->default_keyboard_grab)
1771                 weston_compositor_run_binding(compositor, wd,
1772                                               time, key, 0, 0, state);
1773
1774         device->keyboard_grab->interface->key(device->keyboard_grab,
1775                                               time, key, state);
1776 }
1777
1778 WL_EXPORT void
1779 notify_pointer_focus(struct wl_input_device *device,
1780                      struct weston_output *output, GLfloat x, GLfloat y)
1781 {
1782         struct weston_input_device *wd = (struct weston_input_device *) device;
1783         struct weston_compositor *compositor = wd->compositor;
1784
1785         if (output) {
1786                 weston_input_update_drag_surface(device,
1787                                                  x - wl_fixed_to_double(device->x),
1788                                                  y - wl_fixed_to_double(device->y));
1789
1790                 device->x = wl_fixed_from_double(x);
1791                 device->y = wl_fixed_from_double(y);
1792                 compositor->focus = 1;
1793                 weston_compositor_repick(compositor);
1794         } else {
1795                 compositor->focus = 0;
1796                 weston_compositor_repick(compositor);
1797         }
1798 }
1799
1800 static void
1801 destroy_device_saved_kbd_focus(struct wl_listener *listener, void *data)
1802 {
1803         struct weston_input_device *wd;
1804
1805         wd = container_of(listener, struct weston_input_device,
1806                           saved_kbd_focus_listener);
1807
1808         wd->saved_kbd_focus = NULL;
1809 }
1810
1811 WL_EXPORT void
1812 notify_keyboard_focus(struct wl_input_device *device, struct wl_array *keys)
1813 {
1814         struct weston_input_device *wd =
1815                 (struct weston_input_device *) device;
1816         struct weston_compositor *compositor = wd->compositor;
1817         struct wl_surface *surface;
1818         uint32_t *k;
1819
1820         if (keys) {
1821                 wl_array_copy(&wd->input_device.keys, keys);
1822                 wd->modifier_state = 0;
1823                 wl_array_for_each(k, &device->keys) {
1824                         weston_compositor_idle_inhibit(compositor);
1825                         update_modifier_state(wd, *k, 1);
1826                 }
1827
1828                 surface = wd->saved_kbd_focus;
1829
1830                 if (surface) {
1831                         wl_list_remove(&wd->saved_kbd_focus_listener.link);
1832                         wl_input_device_set_keyboard_focus(&wd->input_device,
1833                                                            surface);
1834                         wd->saved_kbd_focus = NULL;
1835                 }
1836         } else {
1837                 wl_array_for_each(k, &device->keys)
1838                         weston_compositor_idle_release(compositor);
1839
1840                 wd->modifier_state = 0;
1841
1842                 surface = wd->input_device.keyboard_focus;
1843
1844                 if (surface) {
1845                         wd->saved_kbd_focus = surface;
1846                         wd->saved_kbd_focus_listener.notify =
1847                                 destroy_device_saved_kbd_focus;
1848                         wl_signal_add(&surface->resource.destroy_signal,
1849                                       &wd->saved_kbd_focus_listener);
1850                 }
1851
1852                 wl_input_device_set_keyboard_focus(&wd->input_device, NULL);
1853                 /* FIXME: We really need keyboard grab cancel here to
1854                  * let the grab shut down properly.  As it is we leak
1855                  * the grab data. */
1856                 wl_input_device_end_keyboard_grab(&wd->input_device);
1857         }
1858 }
1859
1860 static void
1861 lose_touch_focus_resource(struct wl_listener *listener, void *data)
1862 {
1863         struct weston_input_device *device =
1864                 container_of(listener, struct weston_input_device,
1865                              touch_focus_resource_listener);
1866
1867         device->touch_focus_resource = NULL;
1868 }
1869
1870 static void
1871 lose_touch_focus(struct wl_listener *listener, void *data)
1872 {
1873         struct weston_input_device *device =
1874                 container_of(listener, struct weston_input_device,
1875                              touch_focus_listener);
1876
1877         device->touch_focus = NULL;
1878 }
1879
1880 static void
1881 touch_set_focus(struct weston_input_device *device,
1882                 struct wl_surface *surface)
1883 {
1884         struct wl_input_device *input_device = &device->input_device;
1885         struct wl_resource *resource;
1886
1887         if (device->touch_focus == surface)
1888                 return;
1889
1890         if (surface) {
1891                 resource =
1892                         find_resource_for_client(&input_device->resource_list,
1893                                                  surface->resource.client);
1894                 if (!resource) {
1895                         fprintf(stderr, "couldn't find resource\n");
1896                         return;
1897                 }
1898
1899                 device->touch_focus_resource_listener.notify =
1900                         lose_touch_focus_resource;
1901                 wl_signal_add(&resource->destroy_signal,
1902                               &device->touch_focus_resource_listener);
1903                 device->touch_focus_listener.notify = lose_touch_focus;
1904                 wl_signal_add(&surface->resource.destroy_signal,
1905                                &device->touch_focus_listener);
1906
1907                 device->touch_focus = surface;
1908                 device->touch_focus_resource = resource;
1909         } else {
1910                 if (device->touch_focus)
1911                         wl_list_remove(&device->touch_focus_listener.link);
1912                 if (device->touch_focus_resource)
1913                         wl_list_remove(&device->touch_focus_resource_listener.link);
1914                 device->touch_focus = NULL;
1915                 device->touch_focus_resource = NULL;
1916         }
1917 }
1918
1919 /**
1920  * notify_touch - emulates button touches and notifies surfaces accordingly.
1921  *
1922  * It assumes always the correct cycle sequence until it gets here: touch_down
1923  * → touch_update → ... → touch_update → touch_end. The driver is responsible
1924  * for sending along such order.
1925  *
1926  */
1927 WL_EXPORT void
1928 notify_touch(struct wl_input_device *device, uint32_t time, int touch_id,
1929              GLfloat x, GLfloat y, int touch_type)
1930 {
1931         struct weston_input_device *wd = (struct weston_input_device *) device;
1932         struct weston_compositor *ec = wd->compositor;
1933         struct weston_surface *es;
1934         wl_fixed_t fx, fy, sx, sy;
1935         uint32_t serial = 0;
1936
1937         fx = wl_fixed_from_double(x);
1938         fy = wl_fixed_from_double(y);
1939
1940         switch (touch_type) {
1941         case WL_INPUT_DEVICE_TOUCH_DOWN:
1942                 weston_compositor_idle_inhibit(ec);
1943
1944                 wd->num_tp++;
1945
1946                 /* the first finger down picks the surface, and all further go
1947                  * to that surface for the remainder of the touch session i.e.
1948                  * until all touch points are up again. */
1949                 if (wd->num_tp == 1) {
1950                         es = weston_compositor_pick_surface(ec, fx, fy, &sx, &sy);
1951                         touch_set_focus(wd, &es->surface);
1952                 } else if (wd->touch_focus) {
1953                         es = (struct weston_surface *) wd->touch_focus;
1954                         weston_surface_from_global_fixed(es, fx, fy, &sx, &sy);
1955                 }
1956
1957                 if (wd->touch_focus_resource && wd->touch_focus)
1958                         wl_input_device_send_touch_down(wd->touch_focus_resource,
1959                                                         serial, time,
1960                                                         &wd->touch_focus->resource,
1961                                                         touch_id, sx, sy);
1962                 break;
1963         case WL_INPUT_DEVICE_TOUCH_MOTION:
1964                 es = (struct weston_surface *) wd->touch_focus;
1965                 if (!es)
1966                         break;
1967
1968                 weston_surface_from_global_fixed(es, fx, fy, &sx, &sy);
1969                 if (wd->touch_focus_resource)
1970                         wl_input_device_send_touch_motion(wd->touch_focus_resource,
1971                                                           time, touch_id, sx, sy);
1972                 break;
1973         case WL_INPUT_DEVICE_TOUCH_UP:
1974                 weston_compositor_idle_release(ec);
1975                 wd->num_tp--;
1976
1977                 if (wd->touch_focus_resource)
1978                         wl_input_device_send_touch_up(wd->touch_focus_resource,
1979                                                       serial, time, touch_id);
1980                 if (wd->num_tp == 0)
1981                         touch_set_focus(wd, NULL);
1982                 break;
1983         }
1984 }
1985
1986 static void
1987 input_device_attach(struct wl_client *client,
1988                     struct wl_resource *resource,
1989                     uint32_t serial,
1990                     struct wl_resource *buffer_resource, int32_t x, int32_t y)
1991 {
1992         struct weston_input_device *device = resource->data;
1993         struct weston_compositor *compositor = device->compositor;
1994         struct wl_buffer *buffer = NULL;
1995
1996         if (serial < device->input_device.pointer_focus_serial)
1997                 return;
1998         if (device->input_device.pointer_focus == NULL)
1999                 return;
2000         if (device->input_device.pointer_focus->resource.client != client)
2001                 return;
2002
2003         if (buffer_resource)
2004                 buffer = buffer_resource->data;
2005
2006         weston_surface_attach(&device->sprite->surface, buffer);
2007         empty_region(&device->sprite->input);
2008
2009         if (!buffer)
2010                 return;
2011
2012         if (!weston_surface_is_mapped(device->sprite)) {
2013                 wl_list_insert(&compositor->cursor_layer.surface_list,
2014                                &device->sprite->layer_link);
2015                 weston_surface_assign_output(device->sprite);
2016         }
2017
2018
2019         device->hotspot_x = x;
2020         device->hotspot_y = y;
2021         weston_surface_configure(device->sprite,
2022                                  device->input_device.x - device->hotspot_x,
2023                                  device->input_device.y - device->hotspot_y,
2024                                  buffer->width, buffer->height);
2025
2026         surface_damage(NULL, &device->sprite->surface.resource,
2027                        0, 0, buffer->width, buffer->height);
2028 }
2029
2030 static const struct wl_input_device_interface input_device_interface = {
2031         input_device_attach,
2032 };
2033
2034 static void
2035 handle_drag_surface_destroy(struct wl_listener *listener, void *data)
2036 {
2037         struct weston_input_device *device;
2038
2039         device = container_of(listener, struct weston_input_device,
2040                               drag_surface_destroy_listener);
2041
2042         device->drag_surface = NULL;
2043 }
2044
2045 static void unbind_resource(struct wl_resource *resource)
2046 {
2047         wl_list_remove(&resource->link);
2048         free(resource);
2049 }
2050
2051 static void
2052 bind_input_device(struct wl_client *client,
2053                   void *data, uint32_t version, uint32_t id)
2054 {
2055         struct wl_input_device *device = data;
2056         struct wl_resource *resource;
2057
2058         resource = wl_client_add_object(client, &wl_input_device_interface,
2059                                         &input_device_interface, id, data);
2060         wl_list_insert(&device->resource_list, &resource->link);
2061         resource->destroy = unbind_resource;
2062 }
2063
2064 static void
2065 device_handle_new_drag_icon(struct wl_listener *listener, void *data)
2066 {
2067         struct weston_input_device *device;
2068
2069         device = container_of(listener, struct weston_input_device,
2070                               new_drag_icon_listener);
2071
2072         weston_input_update_drag_surface(&device->input_device, 0, 0);
2073 }
2074
2075 WL_EXPORT void
2076 weston_input_device_init(struct weston_input_device *device,
2077                          struct weston_compositor *ec)
2078 {
2079         wl_input_device_init(&device->input_device);
2080
2081         wl_display_add_global(ec->wl_display, &wl_input_device_interface,
2082                               device, bind_input_device);
2083
2084         device->sprite = weston_surface_create(ec);
2085         device->sprite->surface.resource.data = device->sprite;
2086
2087         device->compositor = ec;
2088         device->hotspot_x = 16;
2089         device->hotspot_y = 16;
2090         device->modifier_state = 0;
2091         device->num_tp = 0;
2092
2093         device->drag_surface_destroy_listener.notify =
2094                 handle_drag_surface_destroy;
2095
2096         wl_list_insert(ec->input_device_list.prev, &device->link);
2097
2098         device->new_drag_icon_listener.notify = device_handle_new_drag_icon;
2099         wl_signal_add(&device->input_device.drag_icon_signal,
2100                       &device->new_drag_icon_listener);
2101 }
2102
2103 WL_EXPORT void
2104 weston_input_device_release(struct weston_input_device *device)
2105 {
2106         wl_list_remove(&device->link);
2107         /* The global object is destroyed at wl_display_destroy() time. */
2108
2109         if (device->sprite)
2110                 destroy_surface(&device->sprite->surface.resource);
2111
2112         wl_input_device_release(&device->input_device);
2113 }
2114
2115 static void
2116 drag_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy)
2117 {
2118         weston_surface_configure(es,
2119                                  es->geometry.x + sx, es->geometry.y + sy,
2120                                  es->buffer->width, es->buffer->height);
2121 }
2122
2123 static int
2124 device_setup_new_drag_surface(struct weston_input_device *device,
2125                               struct weston_surface *surface)
2126 {
2127         struct wl_input_device *input_device = &device->input_device;
2128
2129         if (surface->configure) {
2130                 wl_resource_post_error(&surface->surface.resource,
2131                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2132                                        "surface->configure already set");
2133                 return 0;
2134         }
2135
2136         device->drag_surface = surface;
2137
2138         weston_surface_set_position(device->drag_surface,
2139                                     wl_fixed_to_double(input_device->x),
2140                                     wl_fixed_to_double(input_device->y));
2141
2142         surface->configure = drag_surface_configure;
2143
2144         wl_signal_add(&surface->surface.resource.destroy_signal,
2145                        &device->drag_surface_destroy_listener);
2146
2147         return 1;
2148 }
2149
2150 static void
2151 device_release_drag_surface(struct weston_input_device *device)
2152 {
2153         device->drag_surface->configure = NULL;
2154         undef_region(&device->drag_surface->input);
2155         wl_list_remove(&device->drag_surface_destroy_listener.link);
2156         device->drag_surface = NULL;
2157 }
2158
2159 static void
2160 device_map_drag_surface(struct weston_input_device *device)
2161 {
2162         if (weston_surface_is_mapped(device->drag_surface) ||
2163             !device->drag_surface->buffer)
2164                 return;
2165
2166         wl_list_insert(&device->sprite->layer_link,
2167                        &device->drag_surface->layer_link);
2168         weston_surface_assign_output(device->drag_surface);
2169         empty_region(&device->drag_surface->input);
2170 }
2171
2172 static  void
2173 weston_input_update_drag_surface(struct wl_input_device *input_device,
2174                                  int dx, int dy)
2175 {
2176         int surface_changed = 0;
2177         struct weston_input_device *device = (struct weston_input_device *)
2178                 input_device;
2179
2180         if (!device->drag_surface && !input_device->drag_surface)
2181                 return;
2182
2183         if (device->drag_surface && input_device->drag_surface &&
2184             (&device->drag_surface->surface.resource !=
2185              &input_device->drag_surface->resource))
2186                 /* between calls to this funcion we got a new drag_surface */
2187                 surface_changed = 1;
2188
2189         if (!input_device->drag_surface || surface_changed) {
2190                 device_release_drag_surface(device);
2191                 if (!surface_changed)
2192                         return;
2193         }
2194
2195         if (!device->drag_surface || surface_changed) {
2196                 struct weston_surface *surface = (struct weston_surface *)
2197                         input_device->drag_surface;
2198                 if (!device_setup_new_drag_surface(device, surface))
2199                         return;
2200         }
2201
2202         /* the client may not have attached a buffer to the drag surface
2203          * when we setup it up, so check if map is needed on every update */
2204         device_map_drag_surface(device);
2205
2206         /* the client may have attached a buffer with a different size to
2207          * the drag surface, causing the input region to be reset */
2208         if (region_is_undefined(&device->drag_surface->input))
2209                 empty_region(&device->drag_surface->input);
2210
2211         if (!dx && !dy)
2212                 return;
2213
2214         weston_surface_set_position(device->drag_surface,
2215                                     device->drag_surface->geometry.x + dx,
2216                                     device->drag_surface->geometry.y + dy);
2217 }
2218
2219 WL_EXPORT void
2220 weston_compositor_update_drag_surfaces(struct weston_compositor *compositor)
2221 {
2222         weston_input_update_drag_surface(compositor->input_device, 0, 0);
2223 }
2224
2225 static void
2226 bind_output(struct wl_client *client,
2227             void *data, uint32_t version, uint32_t id)
2228 {
2229         struct weston_output *output = data;
2230         struct weston_mode *mode;
2231         struct wl_resource *resource;
2232
2233         resource = wl_client_add_object(client,
2234                                         &wl_output_interface, NULL, id, data);
2235
2236         wl_list_insert(&output->resource_list, &resource->link);
2237         resource->destroy = unbind_resource;
2238
2239         wl_output_send_geometry(resource,
2240                                 output->x,
2241                                 output->y,
2242                                 output->mm_width,
2243                                 output->mm_height,
2244                                 output->subpixel,
2245                                 output->make, output->model);
2246
2247         wl_list_for_each (mode, &output->mode_list, link) {
2248                 wl_output_send_mode(resource,
2249                                     mode->flags,
2250                                     mode->width,
2251                                     mode->height,
2252                                     mode->refresh);
2253         }
2254 }
2255
2256 static const char vertex_shader[] =
2257         "uniform mat4 proj;\n"
2258         "attribute vec2 position;\n"
2259         "attribute vec2 texcoord;\n"
2260         "varying vec2 v_texcoord;\n"
2261         "void main()\n"
2262         "{\n"
2263         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
2264         "   v_texcoord = texcoord;\n"
2265         "}\n";
2266
2267 static const char texture_fragment_shader[] =
2268         "precision mediump float;\n"
2269         "varying vec2 v_texcoord;\n"
2270         "uniform sampler2D tex;\n"
2271         "uniform float alpha;\n"
2272         "uniform float bright;\n"
2273         "uniform float saturation;\n"
2274         "uniform float texwidth;\n"
2275         "void main()\n"
2276         "{\n"
2277         "   if (v_texcoord.x < 0.0 || v_texcoord.x > texwidth ||\n"
2278         "       v_texcoord.y < 0.0 || v_texcoord.y > 1.0)\n"
2279         "      discard;\n"
2280         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
2281         "   float gray = dot(gl_FragColor.rgb, vec3(0.299, 0.587, 0.114));\n"
2282         "   vec3 range = (gl_FragColor.rgb - vec3 (gray, gray, gray)) * saturation;\n"
2283         "   gl_FragColor = vec4(vec3(gray + range), gl_FragColor.a);\n"
2284         "   gl_FragColor = vec4(vec3(bright, bright, bright) * gl_FragColor.rgb, gl_FragColor.a);\n"
2285         "   gl_FragColor = alpha * gl_FragColor;\n"
2286         "}\n";
2287
2288 static const char solid_fragment_shader[] =
2289         "precision mediump float;\n"
2290         "uniform vec4 color;\n"
2291         "uniform float alpha;\n"
2292         "void main()\n"
2293         "{\n"
2294         "   gl_FragColor = alpha * color\n;"
2295         "}\n";
2296
2297 static int
2298 compile_shader(GLenum type, const char *source)
2299 {
2300         GLuint s;
2301         char msg[512];
2302         GLint status;
2303
2304         s = glCreateShader(type);
2305         glShaderSource(s, 1, &source, NULL);
2306         glCompileShader(s);
2307         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
2308         if (!status) {
2309                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
2310                 fprintf(stderr, "shader info: %s\n", msg);
2311                 return GL_NONE;
2312         }
2313
2314         return s;
2315 }
2316
2317 static int
2318 weston_shader_init(struct weston_shader *shader,
2319                    const char *vertex_source, const char *fragment_source)
2320 {
2321         char msg[512];
2322         GLint status;
2323
2324         shader->vertex_shader =
2325                 compile_shader(GL_VERTEX_SHADER, vertex_source);
2326         shader->fragment_shader =
2327                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
2328
2329         shader->program = glCreateProgram();
2330         glAttachShader(shader->program, shader->vertex_shader);
2331         glAttachShader(shader->program, shader->fragment_shader);
2332         glBindAttribLocation(shader->program, 0, "position");
2333         glBindAttribLocation(shader->program, 1, "texcoord");
2334
2335         glLinkProgram(shader->program);
2336         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
2337         if (!status) {
2338                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
2339                 fprintf(stderr, "link info: %s\n", msg);
2340                 return -1;
2341         }
2342
2343         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
2344         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
2345         shader->alpha_uniform = glGetUniformLocation(shader->program, "alpha");
2346         shader->brightness_uniform = glGetUniformLocation(shader->program, "bright");
2347         shader->saturation_uniform = glGetUniformLocation(shader->program, "saturation");
2348         shader->color_uniform = glGetUniformLocation(shader->program, "color");
2349         shader->texwidth_uniform = glGetUniformLocation(shader->program,
2350                                                         "texwidth");
2351
2352         return 0;
2353 }
2354
2355 WL_EXPORT void
2356 weston_output_destroy(struct weston_output *output)
2357 {
2358         struct weston_compositor *c = output->compositor;
2359
2360         pixman_region32_fini(&output->region);
2361         pixman_region32_fini(&output->previous_damage);
2362         output->compositor->output_id_pool &= ~(1 << output->id);
2363
2364         wl_display_remove_global(c->wl_display, output->global);
2365 }
2366
2367 WL_EXPORT void
2368 weston_output_update_zoom(struct weston_output *output, int x, int y)
2369 {
2370         float ratio;
2371
2372         if (output->zoom.level <= 0)
2373                 return;
2374
2375         output->zoom.magnification = 1 / output->zoom.level;
2376         ratio = 1 - (1 / output->zoom.magnification);
2377
2378         output->zoom.trans_x = (((float)(x - output->x) / output->current->width) * (ratio * 2)) - ratio;
2379         output->zoom.trans_y = (((float)(y - output->y) / output->current->height) * (ratio * 2)) - ratio;
2380
2381         output->dirty = 1;
2382         weston_output_damage(output);
2383 }
2384
2385 WL_EXPORT void
2386 weston_output_update_matrix(struct weston_output *output)
2387 {
2388         int flip;
2389         struct weston_matrix camera;
2390         struct weston_matrix modelview;
2391
2392         weston_matrix_init(&output->matrix);
2393         weston_matrix_translate(&output->matrix,
2394                                 -(output->x + (output->border.right + output->current->width - output->border.left) / 2.0),
2395                                 -(output->y + (output->border.bottom + output->current->height - output->border.top) / 2.0), 0);
2396
2397         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
2398         weston_matrix_scale(&output->matrix,
2399                             2.0 / (output->current->width + output->border.left + output->border.right),
2400                             flip * 2.0 / (output->current->height + output->border.top + output->border.bottom), 1);
2401         if (output->zoom.active) {
2402                 weston_matrix_init(&camera);
2403                 weston_matrix_init(&modelview);
2404                 weston_matrix_translate(&camera, output->zoom.trans_x, flip * output->zoom.trans_y, 0);
2405                 weston_matrix_invert(&modelview, &camera);
2406                 weston_matrix_scale(&modelview, output->zoom.magnification, output->zoom.magnification, 1.0);
2407                 weston_matrix_multiply(&output->matrix, &modelview);
2408         }
2409
2410         output->dirty = 0;
2411 }
2412
2413 WL_EXPORT void
2414 weston_output_move(struct weston_output *output, int x, int y)
2415 {
2416         output->x = x;
2417         output->y = y;
2418
2419         pixman_region32_init(&output->previous_damage);
2420         pixman_region32_init_rect(&output->region, x, y,
2421                                   output->current->width,
2422                                   output->current->height);
2423 }
2424
2425 WL_EXPORT void
2426 weston_output_init(struct weston_output *output, struct weston_compositor *c,
2427                    int x, int y, int width, int height, uint32_t flags)
2428 {
2429         output->compositor = c;
2430         output->x = x;
2431         output->y = y;
2432         output->border.top = 0;
2433         output->border.bottom = 0;
2434         output->border.left = 0;
2435         output->border.right = 0;
2436         output->mm_width = width;
2437         output->mm_height = height;
2438         output->dirty = 1;
2439         wl_list_init(&output->read_pixels_list);
2440
2441         output->zoom.active = 0;
2442         output->zoom.increment = 0.05;
2443         output->zoom.level = 1.0;
2444         output->zoom.magnification = 1.0;
2445         output->zoom.trans_x = 0.0;
2446         output->zoom.trans_y = 0.0;
2447
2448         output->flags = flags;
2449         weston_output_move(output, x, y);
2450         weston_output_damage(output);
2451
2452         wl_list_init(&output->frame_callback_list);
2453         wl_list_init(&output->resource_list);
2454
2455         output->id = ffs(~output->compositor->output_id_pool) - 1;
2456         output->compositor->output_id_pool |= 1 << output->id;
2457
2458         output->global =
2459                 wl_display_add_global(c->wl_display, &wl_output_interface,
2460                                       output, bind_output);
2461 }
2462
2463 WL_EXPORT void
2464 weston_output_do_read_pixels(struct weston_output *output)
2465 {
2466         struct weston_read_pixels *r, *next;
2467
2468         glPixelStorei(GL_PACK_ALIGNMENT, 1);
2469         wl_list_for_each_safe(r, next, &output->read_pixels_list, link) {
2470                 glReadPixels(r->x, r->y, r->width, r->height,
2471                              output->compositor->read_format,
2472                              GL_UNSIGNED_BYTE, r->data);
2473                 r->done(r, output);
2474         }
2475 }
2476
2477 static void
2478 compositor_bind(struct wl_client *client,
2479                 void *data, uint32_t version, uint32_t id)
2480 {
2481         struct weston_compositor *compositor = data;
2482
2483         wl_client_add_object(client, &wl_compositor_interface,
2484                              &compositor_interface, id, compositor);
2485 }
2486
2487 WL_EXPORT int
2488 weston_compositor_init(struct weston_compositor *ec, struct wl_display *display)
2489 {
2490         struct wl_event_loop *loop;
2491         const char *extensions;
2492
2493         ec->wl_display = display;
2494         wl_signal_init(&ec->destroy_signal);
2495         wl_signal_init(&ec->activate_signal);
2496         wl_signal_init(&ec->lock_signal);
2497         wl_signal_init(&ec->unlock_signal);
2498         ec->launcher_sock = weston_environment_get_fd("WESTON_LAUNCHER_SOCK");
2499
2500         ec->output_id_pool = 0;
2501
2502         if (!wl_display_add_global(display, &wl_compositor_interface,
2503                                    ec, compositor_bind))
2504                 return -1;
2505
2506         wl_display_init_shm(display);
2507
2508         ec->image_target_texture_2d =
2509                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
2510         ec->image_target_renderbuffer_storage = (void *)
2511                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
2512         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
2513         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
2514         ec->bind_display =
2515                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
2516         ec->unbind_display =
2517                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
2518
2519         extensions = (const char *) glGetString(GL_EXTENSIONS);
2520         if (!extensions) {
2521                 fprintf(stderr, "Retrieving GL extension string failed.\n");
2522                 return -1;
2523         }
2524
2525         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
2526                 fprintf(stderr,
2527                         "GL_EXT_texture_format_BGRA8888 not available\n");
2528                 return -1;
2529         }
2530
2531         if (strstr(extensions, "GL_EXT_read_format_bgra"))
2532                 ec->read_format = GL_BGRA_EXT;
2533         else
2534                 ec->read_format = GL_RGBA;
2535
2536         if (strstr(extensions, "GL_EXT_unpack_subimage"))
2537                 ec->has_unpack_subimage = 1;
2538
2539         extensions =
2540                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
2541         if (!extensions) {
2542                 fprintf(stderr, "Retrieving EGL extension string failed.\n");
2543                 return -1;
2544         }
2545
2546         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
2547                 ec->has_bind_display = 1;
2548         if (ec->has_bind_display)
2549                 ec->bind_display(ec->display, ec->wl_display);
2550
2551         wl_list_init(&ec->surface_list);
2552         wl_list_init(&ec->layer_list);
2553         wl_list_init(&ec->input_device_list);
2554         wl_list_init(&ec->output_list);
2555         wl_list_init(&ec->binding_list);
2556         wl_list_init(&ec->animation_list);
2557         weston_spring_init(&ec->fade.spring, 30.0, 1.0, 1.0);
2558         ec->fade.animation.frame = fade_frame;
2559         wl_list_init(&ec->fade.animation.link);
2560
2561         weston_layer_init(&ec->fade_layer, &ec->layer_list);
2562         weston_layer_init(&ec->cursor_layer, &ec->fade_layer.link);
2563
2564         screenshooter_create(ec);
2565
2566         ec->ping_handler = NULL;
2567
2568         wl_data_device_manager_init(ec->wl_display);
2569
2570         glActiveTexture(GL_TEXTURE0);
2571
2572         if (weston_shader_init(&ec->texture_shader,
2573                              vertex_shader, texture_fragment_shader) < 0)
2574                 return -1;
2575         if (weston_shader_init(&ec->solid_shader,
2576                              vertex_shader, solid_fragment_shader) < 0)
2577                 return -1;
2578
2579         loop = wl_display_get_event_loop(ec->wl_display);
2580         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
2581         wl_event_source_timer_update(ec->idle_source, ec->idle_time * 1000);
2582
2583         ec->input_loop = wl_event_loop_create();
2584
2585         weston_compositor_schedule_repaint(ec);
2586
2587         return 0;
2588 }
2589
2590 WL_EXPORT void
2591 weston_compositor_shutdown(struct weston_compositor *ec)
2592 {
2593         struct weston_output *output, *next;
2594
2595         wl_event_source_remove(ec->idle_source);
2596         if (ec->input_loop_source)
2597                 wl_event_source_remove(ec->input_loop_source);
2598
2599         /* Destroy all outputs associated with this compositor */
2600         wl_list_for_each_safe(output, next, &ec->output_list, link)
2601                 output->destroy(output);
2602
2603         weston_binding_list_destroy_all(&ec->binding_list);
2604
2605         wl_array_release(&ec->vertices);
2606         wl_array_release(&ec->indices);
2607
2608         wl_event_loop_destroy(ec->input_loop);
2609 }
2610
2611 static int weston_compositor_xkb_init(struct weston_compositor *ec,
2612                                       struct xkb_rule_names *names)
2613 {
2614         ec->xkb_info.context = xkb_context_new();
2615         if (ec->xkb_info.context == NULL) {
2616                 fprintf(stderr, "failed to create XKB context\n");
2617                 return -1;
2618         }
2619
2620         ec->xkb_info.names = *names;
2621         if (!ec->xkb_info.names.rules)
2622                 ec->xkb_info.names.rules = strdup("evdev");
2623         if (!ec->xkb_info.names.model)
2624                 ec->xkb_info.names.model = strdup("pc105");
2625         if (!ec->xkb_info.names.layout)
2626                 ec->xkb_info.names.layout = strdup("us");
2627
2628         ec->xkb_info.keymap = xkb_map_new_from_names(ec->xkb_info.context,
2629                                                      &ec->xkb_info.names);
2630         if (ec->xkb_info.keymap == NULL) {
2631                 fprintf(stderr, "failed to compile XKB keymap\n");
2632                 return -1;
2633         }
2634
2635         ec->xkb_info.state = xkb_state_new(ec->xkb_info.keymap);
2636         if (ec->xkb_info.state == NULL) {
2637                 fprintf(stderr, "failed to initialise XKB state\n");
2638                 return -1;
2639         }
2640
2641         return 0;
2642 }
2643
2644 static void weston_compositor_xkb_destroy(struct weston_compositor *ec)
2645 {
2646         xkb_state_unref(ec->xkb_info.state);
2647         xkb_map_unref(ec->xkb_info.keymap);
2648         xkb_context_unref(ec->xkb_info.context);
2649
2650         free(ec->xkb_info.names.rules);
2651         free(ec->xkb_info.names.model);
2652         free(ec->xkb_info.names.layout);
2653         free(ec->xkb_info.names.variant);
2654         free(ec->xkb_info.names.options);
2655 }
2656
2657 static int on_term_signal(int signal_number, void *data)
2658 {
2659         struct wl_display *display = data;
2660
2661         fprintf(stderr, "caught signal %d\n", signal_number);
2662         wl_display_terminate(display);
2663
2664         return 1;
2665 }
2666
2667 static void
2668 on_segv_signal(int s, siginfo_t *siginfo, void *context)
2669 {
2670         void *buffer[32];
2671         int i, count;
2672         Dl_info info;
2673
2674         fprintf(stderr, "caught segv\n");
2675
2676         count = backtrace(buffer, ARRAY_LENGTH(buffer));
2677         for (i = 0; i < count; i++) {
2678                 dladdr(buffer[i], &info);
2679                 fprintf(stderr, "  [%016lx]  %s  (%s)\n",
2680                         (long) buffer[i],
2681                         info.dli_sname ? info.dli_sname : "--",
2682                         info.dli_fname);
2683         }
2684
2685         longjmp(segv_jmp_buf, 1);
2686 }
2687
2688
2689 static void *
2690 load_module(const char *name, const char *entrypoint, void **handle)
2691 {
2692         char path[PATH_MAX];
2693         void *module, *init;
2694
2695         if (name[0] != '/')
2696                 snprintf(path, sizeof path, MODULEDIR "/%s", name);
2697         else
2698                 snprintf(path, sizeof path, "%s", name);
2699
2700         module = dlopen(path, RTLD_LAZY);
2701         if (!module) {
2702                 fprintf(stderr,
2703                         "failed to load module '%s': %s\n", path, dlerror());
2704                 return NULL;
2705         }
2706
2707         init = dlsym(module, entrypoint);
2708         if (!init) {
2709                 fprintf(stderr,
2710                         "failed to lookup init function in '%s': %s\n",
2711                         path, dlerror());
2712                 return NULL;
2713         }
2714
2715         return init;
2716 }
2717
2718 int main(int argc, char *argv[])
2719 {
2720         struct wl_display *display;
2721         struct weston_compositor *ec;
2722         struct wl_event_source *signals[4];
2723         struct wl_event_loop *loop;
2724         struct sigaction segv_action;
2725         void *shell_module, *backend_module, *xserver_module;
2726         int (*module_init)(struct weston_compositor *ec);
2727         struct weston_compositor
2728                 *(*backend_init)(struct wl_display *display,
2729                                  int argc, char *argv[]);
2730         int i;
2731         char *backend = NULL;
2732         char *shell = NULL;
2733         char *module = NULL;
2734         int32_t idle_time = 300;
2735         int32_t xserver = 0;
2736         char *socket_name = NULL;
2737         char *config_file;
2738         struct xkb_rule_names xkb_names;
2739
2740         const struct config_key shell_config_keys[] = {
2741                 { "type", CONFIG_KEY_STRING, &shell },
2742         };
2743
2744         const struct config_key keyboard_config_keys[] = {
2745                 { "keymap_rules", CONFIG_KEY_STRING, &xkb_names.rules },
2746                 { "keymap_model", CONFIG_KEY_STRING, &xkb_names.model },
2747                 { "keymap_layout", CONFIG_KEY_STRING, &xkb_names.layout },
2748                 { "keymap_variant", CONFIG_KEY_STRING, &xkb_names.variant },
2749                 { "keymap_options", CONFIG_KEY_STRING, &xkb_names.options },
2750         };
2751
2752         const struct config_section cs[] = {
2753                 { "shell",
2754                   shell_config_keys, ARRAY_LENGTH(shell_config_keys) },
2755                 { "keyboard",
2756                   keyboard_config_keys, ARRAY_LENGTH(keyboard_config_keys) },
2757         };
2758
2759         const struct weston_option core_options[] = {
2760                 { WESTON_OPTION_STRING, "backend", 'B', &backend },
2761                 { WESTON_OPTION_STRING, "socket", 'S', &socket_name },
2762                 { WESTON_OPTION_INTEGER, "idle-time", 'i', &idle_time },
2763                 { WESTON_OPTION_BOOLEAN, "xserver", 0, &xserver },
2764                 { WESTON_OPTION_STRING, "module", 0, &module },
2765         };
2766
2767         memset(&xkb_names, 0, sizeof(xkb_names));
2768
2769         argc = parse_options(core_options,
2770                              ARRAY_LENGTH(core_options), argc, argv);
2771
2772         display = wl_display_create();
2773
2774         loop = wl_display_get_event_loop(display);
2775         signals[0] = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal,
2776                                               display);
2777         signals[1] = wl_event_loop_add_signal(loop, SIGINT, on_term_signal,
2778                                               display);
2779         signals[2] = wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal,
2780                                               display);
2781
2782         wl_list_init(&child_process_list);
2783         signals[3] = wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler,
2784                                               NULL);
2785
2786         segv_action.sa_flags = SA_SIGINFO | SA_RESETHAND;
2787         segv_action.sa_sigaction = on_segv_signal;
2788         sigemptyset(&segv_action.sa_mask);
2789         sigaction(SIGSEGV, &segv_action, NULL);
2790
2791         if (!backend) {
2792                 if (getenv("WAYLAND_DISPLAY"))
2793                         backend = "wayland-backend.so";
2794                 else if (getenv("DISPLAY"))
2795                         backend = "x11-backend.so";
2796                 else if (getenv("OPENWFD"))
2797                         backend = "openwfd-backend.so";
2798                 else
2799                         backend = "drm-backend.so";
2800         }
2801
2802         config_file = config_file_path("weston.ini");
2803         parse_config_file(config_file, cs, ARRAY_LENGTH(cs), shell);
2804         free(config_file);
2805
2806         backend_init = load_module(backend, "backend_init", &backend_module);
2807         if (!backend_init)
2808                 exit(EXIT_FAILURE);
2809
2810         ec = backend_init(display, argc, argv);
2811         if (ec == NULL) {
2812                 fprintf(stderr, "failed to create compositor\n");
2813                 exit(EXIT_FAILURE);
2814         }
2815
2816         for (i = 1; argv[i]; i++)
2817                 fprintf(stderr, "unhandled option: %s\n", argv[i]);
2818         if (argv[1])
2819                 exit(EXIT_FAILURE);
2820
2821         if (weston_compositor_xkb_init(ec, &xkb_names) == -1) {
2822                 fprintf(stderr, "failed to initialise keyboard support\n");
2823                 exit(EXIT_FAILURE);
2824         }
2825
2826         ec->option_idle_time = idle_time;
2827         ec->idle_time = idle_time;
2828
2829         module_init = NULL;
2830         if (xserver)
2831                 module_init = load_module("xserver-launcher.so",
2832                                           "weston_xserver_init",
2833                                           &xserver_module);
2834         if (module_init && module_init(ec) < 0)
2835                 exit(EXIT_FAILURE);
2836
2837         if (!shell)
2838                 shell = "desktop-shell.so";
2839         module_init = load_module(shell, "shell_init", &shell_module);
2840         if (!module_init || module_init(ec) < 0)
2841                 exit(EXIT_FAILURE);
2842
2843
2844         module_init = NULL;
2845         if (module)
2846                 module_init = load_module(module, "module_init", NULL);
2847         if (module_init && module_init(ec) < 0)
2848                 exit(EXIT_FAILURE);
2849
2850         if (wl_display_add_socket(display, socket_name)) {
2851                 fprintf(stderr, "failed to add socket: %m\n");
2852                 exit(EXIT_FAILURE);
2853         }
2854
2855         weston_compositor_dpms_on(ec);
2856         weston_compositor_wake(ec);
2857         if (setjmp(segv_jmp_buf) == 0)
2858                 wl_display_run(display);
2859
2860         /* prevent further rendering while shutting down */
2861         ec->state = WESTON_COMPOSITOR_SLEEPING;
2862
2863         wl_signal_emit(&ec->destroy_signal, ec);
2864
2865         if (ec->has_bind_display)
2866                 ec->unbind_display(ec->display, display);
2867
2868         for (i = ARRAY_LENGTH(signals); i;)
2869                 wl_event_source_remove(signals[--i]);
2870
2871         weston_compositor_xkb_destroy(ec);
2872
2873         ec->destroy(ec);
2874         wl_display_destroy(display);
2875
2876         return 0;
2877 }