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 void
  83 weston_watch_process(struct weston_process *process)
  84 {
  85         wl_list_insert(&child_process_list, &process->link);
  86 }
  87
  88 static void
  89 child_client_exec(int sockfd, const char *path)
  90 {
  91         int clientfd;
  92         char s[32];
  93         sigset_t allsigs;
  94
  95         /* do not give our signal mask to the new process */
  96         sigfillset(&allsigs);
  97         sigprocmask(SIG_UNBLOCK, &allsigs, NULL);
  98
  99         /* Launch clients as the user. */
 100         seteuid(getuid());
 101
 102         /* SOCK_CLOEXEC closes both ends, so we dup the fd to get a
 103          * non-CLOEXEC fd to pass through exec. */
 104         clientfd = dup(sockfd);
 105         if (clientfd == -1) {
 106                 fprintf(stderr, "compositor: dup failed: %m\n");
 107                 return;
 108         }
 109
 110         snprintf(s, sizeof s, "%d", clientfd);
 111         setenv("WAYLAND_SOCKET", s, 1);
 112
 113         if (execl(path, path, NULL) < 0)
 114                 fprintf(stderr, "compositor: executing '%s' failed: %m\n",
 115                         path);
 116 }
 117
 118 WL_EXPORT struct wl_client *
 119 weston_client_launch(struct weston_compositor *compositor,
 120                      struct weston_process *proc,
 121                      const char *path,
 122                      weston_process_cleanup_func_t cleanup)
 123 {
 124         int sv[2];
 125         pid_t pid;
 126         struct wl_client *client;
 127
 128         if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sv) < 0) {
 129                 fprintf(stderr, "weston_client_launch: "
 130                         "socketpair failed while launching '%s': %m\n",
 131                         path);
 132                 return NULL;
 133         }
 134
 135         pid = fork();
 136         if (pid == -1) {
 137                 close(sv[0]);
 138                 close(sv[1]);
 139                 fprintf(stderr,  "weston_client_launch: "
 140                         "fork failed while launching '%s': %m\n", path);
 141                 return NULL;
 142         }
 143
 144         if (pid == 0) {
 145                 child_client_exec(sv[1], path);
 146                 exit(-1);
 147         }
 148
 149         close(sv[1]);
 150
 151         client = wl_client_create(compositor->wl_display, sv[0]);
 152         if (!client) {
 153                 close(sv[0]);
 154                 fprintf(stderr, "weston_client_launch: "
 155                         "wl_client_create failed while launching '%s'.\n",
 156                         path);
 157                 return NULL;
 158         }
 159
 160         proc->pid = pid;
 161         proc->cleanup = cleanup;
 162         weston_watch_process(proc);
 163
 164         return client;
 165 }
 166
 167 static void
 168 surface_handle_buffer_destroy(struct wl_listener *listener,
 169                               struct wl_resource *resource, uint32_t time)
 170 {
 171         struct weston_surface *es =
 172                 container_of(listener, struct weston_surface,
 173                              buffer_destroy_listener);
 174
 175         es->buffer = NULL;
 176 }
 177
 178 static const pixman_region32_data_t undef_region_data;
 179
 180 static void
 181 undef_region(pixman_region32_t *region)
 182 {
 183         pixman_region32_fini(region);
 184         region->data = (pixman_region32_data_t *) &undef_region_data;
 185 }
 186
 187 static int
 188 region_is_undefined(pixman_region32_t *region)
 189 {
 190         return region->data == &undef_region_data;
 191 }
 192
 193 static void
 194 empty_region(pixman_region32_t *region)
 195 {
 196         if (!region_is_undefined(region))
 197                 pixman_region32_fini(region);
 198
 199         pixman_region32_init(region);
 200 }
 201
 202 WL_EXPORT struct weston_surface *
 203 weston_surface_create(struct weston_compositor *compositor)
 204 {
 205         struct weston_surface *surface;
 206
 207         surface = calloc(1, sizeof *surface);
 208         if (surface == NULL)
 209                 return NULL;
 210
 211         wl_list_init(&surface->surface.resource.destroy_listener_list);
 212
 213         wl_list_init(&surface->link);
 214         wl_list_init(&surface->layer_link);
 215
 216         surface->surface.resource.client = NULL;
 217
 218         surface->compositor = compositor;
 219         surface->image = EGL_NO_IMAGE_KHR;
 220         surface->alpha = 255;
 221         surface->pitch = 1;
 222
 223         surface->buffer = NULL;
 224         surface->output = NULL;
 225
 226         pixman_region32_init(&surface->damage);
 227         pixman_region32_init(&surface->opaque);
 228         pixman_region32_init(&surface->clip);
 229         undef_region(&surface->input);
 230         pixman_region32_init(&surface->transform.opaque);
 231         wl_list_init(&surface->frame_callback_list);
 232
 233         surface->buffer_destroy_listener.func = surface_handle_buffer_destroy;
 234
 235         wl_list_init(&surface->geometry.transformation_list);
 236         wl_list_insert(&surface->geometry.transformation_list,
 237                        &surface->transform.position.link);
 238         weston_matrix_init(&surface->transform.position.matrix);
 239         pixman_region32_init(&surface->transform.boundingbox);
 240         surface->geometry.dirty = 1;
 241
 242         return surface;
 243 }
 244
 245 WL_EXPORT void
 246 weston_surface_set_color(struct weston_surface *surface,
 247                  GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha)
 248 {
 249         surface->color[0] = red;
 250         surface->color[1] = green;
 251         surface->color[2] = blue;
 252         surface->color[3] = alpha;
 253         surface->shader = &surface->compositor->solid_shader;
 254 }
 255
 256 static void
 257 surface_to_global_float(struct weston_surface *surface,
 258                         int32_t sx, int32_t sy, GLfloat *x, GLfloat *y)
 259 {
 260         if (surface->transform.enabled) {
 261                 struct weston_vector v = { { sx, sy, 0.0f, 1.0f } };
 262
 263                 weston_matrix_transform(&surface->transform.matrix, &v);
 264
 265                 if (fabsf(v.f[3]) < 1e-6) {
 266                         fprintf(stderr, "warning: numerical instability in "
 267                                 "weston_surface_to_global(), divisor = %g\n",
 268                                 v.f[3]);
 269                         *x = 0;
 270                         *y = 0;
 271                         return;
 272                 }
 273
 274                 *x = v.f[0] / v.f[3];
 275                 *y = v.f[1] / v.f[3];
 276         } else {
 277                 *x = sx + surface->geometry.x;
 278                 *y = sy + surface->geometry.y;
 279         }
 280 }
 281
 282 WL_EXPORT void
 283 weston_surface_damage_below(struct weston_surface *surface)
 284 {
 285         struct weston_compositor *compositor = surface->compositor;
 286         pixman_region32_t damage;
 287
 288         pixman_region32_init(&damage);
 289         pixman_region32_subtract(&damage, &surface->transform.boundingbox,
 290                                  &surface->clip);
 291         pixman_region32_union(&compositor->damage,
 292                               &compositor->damage, &damage);
 293         pixman_region32_fini(&damage);
 294 }
 295
 296 static void
 297 surface_compute_bbox(struct weston_surface *surface, int32_t sx, int32_t sy,
 298                      int32_t width, int32_t height,
 299                      pixman_region32_t *bbox)
 300 {
 301         GLfloat min_x = HUGE_VALF,  min_y = HUGE_VALF;
 302         GLfloat max_x = -HUGE_VALF, max_y = -HUGE_VALF;
 303         int32_t s[4][2] = {
 304                 { sx,         sy },
 305                 { sx,         sy + height },
 306                 { sx + width, sy },
 307                 { sx + width, sy + height }
 308         };
 309         GLfloat int_x, int_y;
 310         int i;
 311
 312         for (i = 0; i < 4; ++i) {
 313                 GLfloat x, y;
 314                 surface_to_global_float(surface, s[i][0], s[i][1], &x, &y);
 315                 if (x < min_x)
 316                         min_x = x;
 317                 if (x > max_x)
 318                         max_x = x;
 319                 if (y < min_y)
 320                         min_y = y;
 321                 if (y > max_y)
 322                         max_y = y;
 323         }
 324
 325         int_x = floorf(min_x);
 326         int_y = floorf(min_y);
 327         pixman_region32_init_rect(bbox, int_x, int_y,
 328                                   ceilf(max_x) - int_x, ceilf(max_y) - int_y);
 329 }
 330
 331 static void
 332 weston_surface_update_transform_disable(struct weston_surface *surface)
 333 {
 334         surface->transform.enabled = 0;
 335
 336         /* round off fractions when not transformed */
 337         surface->geometry.x = roundf(surface->geometry.x);
 338         surface->geometry.y = roundf(surface->geometry.y);
 339
 340         pixman_region32_init_rect(&surface->transform.boundingbox,
 341                                   surface->geometry.x,
 342                                   surface->geometry.y,
 343                                   surface->geometry.width,
 344                                   surface->geometry.height);
 345
 346         if (surface->alpha == 255) {
 347                 pixman_region32_copy(&surface->transform.opaque,
 348                                      &surface->opaque);
 349                 pixman_region32_translate(&surface->transform.opaque,
 350                                           surface->geometry.x,
 351                                           surface->geometry.y);
 352         }
 353 }
 354
 355 static int
 356 weston_surface_update_transform_enable(struct weston_surface *surface)
 357 {
 358         struct weston_matrix *matrix = &surface->transform.matrix;
 359         struct weston_matrix *inverse = &surface->transform.inverse;
 360         struct weston_transform *tform;
 361
 362         surface->transform.enabled = 1;
 363
 364         /* Otherwise identity matrix, but with x and y translation. */
 365         surface->transform.position.matrix.d[12] = surface->geometry.x;
 366         surface->transform.position.matrix.d[13] = surface->geometry.y;
 367
 368         weston_matrix_init(matrix);
 369         wl_list_for_each(tform, &surface->geometry.transformation_list, link)
 370                 weston_matrix_multiply(matrix, &tform->matrix);
 371
 372         if (weston_matrix_invert(inverse, matrix) < 0) {
 373                 /* Oops, bad total transformation, not invertible */
 374                 fprintf(stderr, "error: weston_surface %p"
 375                         " transformation not invertible.\n", surface);
 376                 return -1;
 377         }
 378
 379         surface_compute_bbox(surface, 0, 0, surface->geometry.width,
 380                              surface->geometry.height,
 381                              &surface->transform.boundingbox);
 382
 383         return 0;
 384 }
 385
 386 WL_EXPORT void
 387 weston_surface_update_transform(struct weston_surface *surface)
 388 {
 389         if (!surface->geometry.dirty)
 390                 return;
 391
 392         surface->geometry.dirty = 0;
 393
 394         weston_surface_damage_below(surface);
 395
 396         pixman_region32_fini(&surface->transform.boundingbox);
 397         pixman_region32_fini(&surface->transform.opaque);
 398         pixman_region32_init(&surface->transform.opaque);
 399
 400         if (region_is_undefined(&surface->input))
 401                 pixman_region32_init_rect(&surface->input, 0, 0,
 402                                           surface->geometry.width,
 403                                           surface->geometry.height);
 404
 405         /* transform.position is always in transformation_list */
 406         if (surface->geometry.transformation_list.next ==
 407             &surface->transform.position.link &&
 408             surface->geometry.transformation_list.prev ==
 409             &surface->transform.position.link) {
 410                 weston_surface_update_transform_disable(surface);
 411         } else {
 412                 if (weston_surface_update_transform_enable(surface) < 0)
 413                         weston_surface_update_transform_disable(surface);
 414         }
 415
 416         /* weston_surface_damage() without update */
 417         pixman_region32_union(&surface->damage, &surface->damage,
 418                               &surface->transform.boundingbox);
 419
 420         if (weston_surface_is_mapped(surface))
 421                 weston_surface_assign_output(surface);
 422
 423         weston_compositor_schedule_repaint(surface->compositor);
 424 }
 425
 426 WL_EXPORT void
 427 weston_surface_to_global_float(struct weston_surface *surface,
 428                                int32_t sx, int32_t sy, GLfloat *x, GLfloat *y)
 429 {
 430         weston_surface_update_transform(surface);
 431
 432         surface_to_global_float(surface, sx, sy, x, y);
 433 }
 434
 435 WL_EXPORT void
 436 weston_surface_to_global(struct weston_surface *surface,
 437                          int32_t sx, int32_t sy, int32_t *x, int32_t *y)
 438 {
 439         GLfloat xf, yf;
 440
 441         weston_surface_to_global_float(surface, sx, sy, &xf, &yf);
 442         *x = floorf(xf);
 443         *y = floorf(yf);
 444 }
 445
 446 static void
 447 surface_from_global_float(struct weston_surface *surface,
 448                           int32_t x, int32_t y, GLfloat *sx, GLfloat *sy)
 449 {
 450         if (surface->transform.enabled) {
 451                 struct weston_vector v = { { x, y, 0.0f, 1.0f } };
 452
 453                 weston_matrix_transform(&surface->transform.inverse, &v);
 454
 455                 if (fabsf(v.f[3]) < 1e-6) {
 456                         fprintf(stderr, "warning: numerical instability in "
 457                                 "weston_surface_from_global(), divisor = %g\n",
 458                                 v.f[3]);
 459                         *sx = 0;
 460                         *sy = 0;
 461                         return;
 462                 }
 463
 464                 *sx = v.f[0] / v.f[3];
 465                 *sy = v.f[1] / v.f[3];
 466         } else {
 467                 *sx = x - surface->geometry.x;
 468                 *sy = y - surface->geometry.y;
 469         }
 470 }
 471
 472 WL_EXPORT void
 473 weston_surface_from_global(struct weston_surface *surface,
 474                            int32_t x, int32_t y, int32_t *sx, int32_t *sy)
 475 {
 476         GLfloat sxf, syf;
 477
 478         weston_surface_update_transform(surface);
 479
 480         surface_from_global_float(surface, x, y, &sxf, &syf);
 481         *sx = floorf(sxf);
 482         *sy = floorf(syf);
 483 }
 484
 485 static void
 486 weston_surface_damage_rectangle(struct weston_surface *surface,
 487                                 int32_t sx, int32_t sy,
 488                                 int32_t width, int32_t height)
 489 {
 490         weston_surface_update_transform(surface);
 491
 492         if (surface->transform.enabled) {
 493                 pixman_region32_t box;
 494                 surface_compute_bbox(surface, sx, sy, width, height, &box);
 495                 pixman_region32_union(&surface->damage, &surface->damage,
 496                                       &box);
 497                 pixman_region32_fini(&box);
 498         } else {
 499                 pixman_region32_union_rect(&surface->damage, &surface->damage,
 500                                            surface->geometry.x + sx,
 501                                            surface->geometry.y + sy,
 502                                            width, height);
 503         }
 504
 505         weston_compositor_schedule_repaint(surface->compositor);
 506 }
 507
 508 WL_EXPORT void
 509 weston_surface_damage(struct weston_surface *surface)
 510 {
 511         weston_surface_update_transform(surface);
 512
 513         pixman_region32_union(&surface->damage, &surface->damage,
 514                               &surface->transform.boundingbox);
 515
 516         weston_compositor_schedule_repaint(surface->compositor);
 517 }
 518
 519 WL_EXPORT void
 520 weston_surface_configure(struct weston_surface *surface,
 521                          GLfloat x, GLfloat y, int width, int height)
 522 {
 523         surface->geometry.x = x;
 524         surface->geometry.y = y;
 525         surface->geometry.width = width;
 526         surface->geometry.height = height;
 527         surface->geometry.dirty = 1;
 528 }
 529
 530 WL_EXPORT void
 531 weston_surface_set_position(struct weston_surface *surface,
 532                             GLfloat x, GLfloat y)
 533 {
 534         surface->geometry.x = x;
 535         surface->geometry.y = y;
 536         surface->geometry.dirty = 1;
 537 }
 538
 539 WL_EXPORT int
 540 weston_surface_is_mapped(struct weston_surface *surface)
 541 {
 542         if (surface->output)
 543                 return 1;
 544         else
 545                 return 0;
 546 }
 547
 548 WL_EXPORT uint32_t
 549 weston_compositor_get_time(void)
 550 {
 551         struct timeval tv;
 552
 553         gettimeofday(&tv, NULL);
 554
 555         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 556 }
 557
 558 static struct weston_surface *
 559 weston_compositor_pick_surface(struct weston_compositor *compositor,
 560                                int32_t x, int32_t y, int32_t *sx, int32_t *sy)
 561 {
 562         struct weston_surface *surface;
 563
 564         wl_list_for_each(surface, &compositor->surface_list, link) {
 565                 weston_surface_from_global(surface, x, y, sx, sy);
 566                 if (pixman_region32_contains_point(&surface->input,
 567                                                    *sx, *sy, NULL))
 568                         return surface;
 569         }
 570
 571         return NULL;
 572 }
 573
 574 static void
 575 weston_device_repick(struct wl_input_device *device, uint32_t time)
 576 {
 577         struct weston_input_device *wd = (struct weston_input_device *) device;
 578         const struct wl_pointer_grab_interface *interface;
 579         struct weston_surface *surface, *focus;
 580
 581         surface = weston_compositor_pick_surface(wd->compositor,
 582                                                  device->x, device->y,
 583                                                  &device->current_x,
 584                                                  &device->current_y);
 585
 586         if (&surface->surface != device->current) {
 587                 interface = device->pointer_grab->interface;
 588                 interface->focus(device->pointer_grab, time, &surface->surface,
 589                                  device->current_x, device->current_y);
 590                 device->current = &surface->surface;
 591         }
 592
 593         focus = (struct weston_surface *) device->pointer_grab->focus;
 594         if (focus)
 595                 weston_surface_from_global(focus, device->x, device->y,
 596                                            &device->pointer_grab->x, &device->pointer_grab->y);
 597 }
 598
 599 WL_EXPORT void
 600 weston_compositor_repick(struct weston_compositor *compositor)
 601 {
 602         struct weston_input_device *device;
 603         uint32_t time;
 604
 605         if (!compositor->focus)
 606                 return;
 607
 608         time = weston_compositor_get_time();
 609         wl_list_for_each(device, &compositor->input_device_list, link)
 610                 weston_device_repick(&device->input_device, time);
 611 }
 612
 613 static void
 614 weston_surface_unmap(struct weston_surface *surface)
 615 {
 616         struct wl_input_device *device = surface->compositor->input_device;
 617
 618         weston_surface_damage_below(surface);
 619         surface->output = NULL;
 620         wl_list_remove(&surface->link);
 621         wl_list_remove(&surface->layer_link);
 622
 623         if (device->keyboard_focus == &surface->surface)
 624                 wl_input_device_set_keyboard_focus(device, NULL,
 625                                                    weston_compositor_get_time());
 626         if (device->pointer_focus == &surface->surface)
 627                 wl_input_device_set_pointer_focus(device, NULL, 0, 0,
 628                                                   weston_compositor_get_time());
 629
 630         weston_compositor_schedule_repaint(surface->compositor);
 631 }
 632
 633 static void
 634 destroy_surface(struct wl_resource *resource)
 635 {
 636         struct weston_surface *surface =
 637                 container_of(resource,
 638                              struct weston_surface, surface.resource);
 639         struct weston_compositor *compositor = surface->compositor;
 640
 641         if (weston_surface_is_mapped(surface))
 642                 weston_surface_unmap(surface);
 643
 644         if (surface->texture)
 645                 glDeleteTextures(1, &surface->texture);
 646
 647         if (surface->buffer)
 648                 wl_list_remove(&surface->buffer_destroy_listener.link);
 649
 650         if (surface->image != EGL_NO_IMAGE_KHR)
 651                 compositor->destroy_image(compositor->display,
 652                                           surface->image);
 653
 654         pixman_region32_fini(&surface->transform.boundingbox);
 655         pixman_region32_fini(&surface->damage);
 656         pixman_region32_fini(&surface->opaque);
 657         pixman_region32_fini(&surface->clip);
 658         if (!region_is_undefined(&surface->input))
 659                 pixman_region32_fini(&surface->input);
 660
 661         free(surface);
 662 }
 663
 664 WL_EXPORT void
 665 weston_surface_destroy(struct weston_surface *surface)
 666 {
 667         /* Not a valid way to destroy a client surface */
 668         assert(surface->surface.resource.client == NULL);
 669
 670         destroy_surface(&surface->surface.resource);
 671 }
 672
 673 static void
 674 weston_surface_attach(struct wl_surface *surface, struct wl_buffer *buffer)
 675 {
 676         struct weston_surface *es = (struct weston_surface *) surface;
 677         struct weston_compositor *ec = es->compositor;
 678
 679         if (es->buffer) {
 680                 weston_buffer_post_release(es->buffer);
 681                 wl_list_remove(&es->buffer_destroy_listener.link);
 682         }
 683
 684         es->buffer = buffer;
 685
 686         if (!buffer) {
 687                 if (weston_surface_is_mapped(es))
 688                         weston_surface_unmap(es);
 689                 return;
 690         }
 691
 692         buffer->busy_count++;
 693         wl_list_insert(es->buffer->resource.destroy_listener_list.prev,
 694                        &es->buffer_destroy_listener.link);
 695
 696         if (es->geometry.width != buffer->width ||
 697             es->geometry.height != buffer->height) {
 698                 undef_region(&es->input);
 699                 pixman_region32_fini(&es->opaque);
 700                 pixman_region32_init(&es->opaque);
 701         }
 702
 703         if (!es->texture) {
 704                 glGenTextures(1, &es->texture);
 705                 glBindTexture(GL_TEXTURE_2D, es->texture);
 706                 glTexParameteri(GL_TEXTURE_2D,
 707                                 GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 708                 glTexParameteri(GL_TEXTURE_2D,
 709                                 GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 710                 es->shader = &ec->texture_shader;
 711         } else {
 712                 glBindTexture(GL_TEXTURE_2D, es->texture);
 713         }
 714
 715         if (wl_buffer_is_shm(buffer)) {
 716                 es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
 717         } else {
 718                 if (es->image != EGL_NO_IMAGE_KHR)
 719                         ec->destroy_image(ec->display, es->image);
 720                 es->image = ec->create_image(ec->display, NULL,
 721                                              EGL_WAYLAND_BUFFER_WL,
 722                                              buffer, NULL);
 723
 724                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 725
 726                 es->pitch = buffer->width;
 727         }
 728 }
 729
 730 static int
 731 texture_region(struct weston_surface *es, pixman_region32_t *region)
 732 {
 733         struct weston_compositor *ec = es->compositor;
 734         GLfloat *v, inv_width, inv_height;
 735         GLfloat sx, sy;
 736         pixman_box32_t *rectangles;
 737         unsigned int *p;
 738         int i, n;
 739
 740         rectangles = pixman_region32_rectangles(region, &n);
 741         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 742         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 743         inv_width = 1.0 / es->pitch;
 744         inv_height = 1.0 / es->geometry.height;
 745
 746         for (i = 0; i < n; i++, v += 16, p += 6) {
 747                 surface_from_global_float(es, rectangles[i].x1,
 748                                           rectangles[i].y1, &sx, &sy);
 749                 v[ 0] = rectangles[i].x1;
 750                 v[ 1] = rectangles[i].y1;
 751                 v[ 2] = sx * inv_width;
 752                 v[ 3] = sy * inv_height;
 753
 754                 surface_from_global_float(es, rectangles[i].x1,
 755                                           rectangles[i].y2, &sx, &sy);
 756                 v[ 4] = rectangles[i].x1;
 757                 v[ 5] = rectangles[i].y2;
 758                 v[ 6] = sx * inv_width;
 759                 v[ 7] = sy * inv_height;
 760
 761                 surface_from_global_float(es, rectangles[i].x2,
 762                                           rectangles[i].y1, &sx, &sy);
 763                 v[ 8] = rectangles[i].x2;
 764                 v[ 9] = rectangles[i].y1;
 765                 v[10] = sx * inv_width;
 766                 v[11] = sy * inv_height;
 767
 768                 surface_from_global_float(es, rectangles[i].x2,
 769                                           rectangles[i].y2, &sx, &sy);
 770                 v[12] = rectangles[i].x2;
 771                 v[13] = rectangles[i].y2;
 772                 v[14] = sx * inv_width;
 773                 v[15] = sy * inv_height;
 774
 775                 p[0] = i * 4 + 0;
 776                 p[1] = i * 4 + 1;
 777                 p[2] = i * 4 + 2;
 778                 p[3] = i * 4 + 2;
 779                 p[4] = i * 4 + 1;
 780                 p[5] = i * 4 + 3;
 781         }
 782
 783         return n;
 784 }
 785
 786 WL_EXPORT void
 787 weston_surface_draw(struct weston_surface *es, struct weston_output *output,
 788                     pixman_region32_t *damage)
 789 {
 790         struct weston_compositor *ec = es->compositor;
 791         GLfloat *v;
 792         pixman_region32_t repaint;
 793         GLint filter;
 794         int n;
 795
 796         pixman_region32_init(&repaint);
 797         pixman_region32_intersect(&repaint,
 798                                   &es->transform.boundingbox, damage);
 799         pixman_region32_subtract(&repaint, &repaint, &es->clip);
 800
 801         if (!pixman_region32_not_empty(&repaint))
 802                 goto out;
 803
 804         glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 805         glEnable(GL_BLEND);
 806
 807         if (ec->current_shader != es->shader) {
 808                 glUseProgram(es->shader->program);
 809                 ec->current_shader = es->shader;
 810         }
 811
 812         glUniformMatrix4fv(es->shader->proj_uniform,
 813                            1, GL_FALSE, output->matrix.d);
 814         glUniform1i(es->shader->tex_uniform, 0);
 815         glUniform4fv(es->shader->color_uniform, 1, es->color);
 816         glUniform1f(es->shader->alpha_uniform, es->alpha / 255.0);
 817         glUniform1f(es->shader->texwidth_uniform,
 818                     (GLfloat)es->geometry.width / es->pitch);
 819
 820         if (es->transform.enabled || output->zoom.active)
 821                 filter = GL_LINEAR;
 822         else
 823                 filter = GL_NEAREST;
 824
 825         n = texture_region(es, &repaint);
 826
 827         glBindTexture(GL_TEXTURE_2D, es->texture);
 828         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
 829         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
 830
 831         v = ec->vertices.data;
 832         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 833         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 834         glEnableVertexAttribArray(0);
 835         glEnableVertexAttribArray(1);
 836
 837         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 838
 839         glDisableVertexAttribArray(1);
 840         glDisableVertexAttribArray(0);
 841
 842         ec->vertices.size = 0;
 843         ec->indices.size = 0;
 844
 845 out:
 846         pixman_region32_fini(&repaint);
 847 }
 848
 849 WL_EXPORT void
 850 weston_surface_restack(struct weston_surface *surface, struct wl_list *below)
 851 {
 852         wl_list_remove(&surface->layer_link);
 853         wl_list_insert(below, &surface->layer_link);
 854         weston_surface_damage_below(surface);
 855         weston_surface_damage(surface);
 856 }
 857
 858 WL_EXPORT void
 859 weston_compositor_damage_all(struct weston_compositor *compositor)
 860 {
 861         struct weston_output *output;
 862
 863         wl_list_for_each(output, &compositor->output_list, link)
 864                 weston_output_damage(output);
 865 }
 866
 867 WL_EXPORT void
 868 weston_buffer_post_release(struct wl_buffer *buffer)
 869 {
 870         if (--buffer->busy_count > 0)
 871                 return;
 872
 873         assert(buffer->resource.client != NULL);
 874         wl_resource_queue_event(&buffer->resource, WL_BUFFER_RELEASE);
 875 }
 876
 877 WL_EXPORT void
 878 weston_output_damage(struct weston_output *output)
 879 {
 880         struct weston_compositor *compositor = output->compositor;
 881
 882         pixman_region32_union(&compositor->damage,
 883                               &compositor->damage, &output->region);
 884         weston_compositor_schedule_repaint(compositor);
 885 }
 886
 887 static void
 888 fade_frame(struct weston_animation *animation,
 889            struct weston_output *output, uint32_t msecs)
 890 {
 891         struct weston_compositor *compositor =
 892                 container_of(animation,
 893                              struct weston_compositor, fade.animation);
 894         struct weston_surface *surface;
 895
 896         surface = compositor->fade.surface;
 897         weston_spring_update(&compositor->fade.spring, msecs);
 898         weston_surface_set_color(surface, 0.0, 0.0, 0.0,
 899                                  compositor->fade.spring.current);
 900         weston_surface_damage(surface);
 901
 902         if (weston_spring_done(&compositor->fade.spring)) {
 903                 compositor->fade.spring.current =
 904                         compositor->fade.spring.target;
 905                 wl_list_remove(&animation->link);
 906                 wl_list_init(&animation->link);
 907
 908                 if (compositor->fade.spring.current < 0.001) {
 909                         destroy_surface(&surface->surface.resource);
 910                         compositor->fade.surface = NULL;
 911                 } else if (compositor->fade.spring.current > 0.999) {
 912                         compositor->state = WESTON_COMPOSITOR_SLEEPING;
 913                         compositor->shell->lock(compositor->shell);
 914                 }
 915         }
 916 }
 917
 918 struct weston_frame_callback {
 919         struct wl_resource resource;
 920         struct wl_list link;
 921 };
 922
 923 static void
 924 weston_output_repaint(struct weston_output *output, int msecs)
 925 {
 926         struct weston_compositor *ec = output->compositor;
 927         struct weston_surface *es;
 928         struct weston_layer *layer;
 929         struct weston_animation *animation, *next;
 930         struct weston_frame_callback *cb, *cnext;
 931         pixman_region32_t opaque, new_damage, output_damage;
 932         int32_t width, height;
 933
 934         weston_compositor_update_drag_surfaces(ec);
 935
 936         width = output->current->width +
 937                 output->border.left + output->border.right;
 938         height = output->current->height +
 939                 output->border.top + output->border.bottom;
 940         glViewport(0, 0, width, height);
 941
 942         /* Rebuild the surface list and update surface transforms up front. */
 943         wl_list_init(&ec->surface_list);
 944         wl_list_for_each(layer, &ec->layer_list, link) {
 945                 wl_list_for_each(es, &layer->surface_list, layer_link) {
 946                         weston_surface_update_transform(es);
 947                         wl_list_insert(ec->surface_list.prev, &es->link);
 948                 }
 949         }
 950
 951         if (output->assign_planes)
 952                 /*
 953                  * This will queue flips for the fbs and sprites where
 954                  * applicable and clear the damage for those surfaces.
 955                  * The repaint loop below will repaint everything
 956                  * else.
 957                  */
 958                 output->assign_planes(output);
 959
 960         pixman_region32_init(&new_damage);
 961         pixman_region32_init(&opaque);
 962
 963         wl_list_for_each(es, &ec->surface_list, link) {
 964                 pixman_region32_subtract(&es->damage, &es->damage, &opaque);
 965                 pixman_region32_union(&new_damage, &new_damage, &es->damage);
 966                 empty_region(&es->damage);
 967                 pixman_region32_copy(&es->clip, &opaque);
 968                 pixman_region32_union(&opaque, &opaque, &es->transform.opaque);
 969         }
 970
 971         pixman_region32_union(&ec->damage, &ec->damage, &new_damage);
 972
 973         pixman_region32_init(&output_damage);
 974         pixman_region32_union(&output_damage,
 975                               &ec->damage, &output->previous_damage);
 976         pixman_region32_copy(&output->previous_damage, &ec->damage);
 977         pixman_region32_intersect(&output_damage,
 978                                   &output_damage, &output->region);
 979         pixman_region32_subtract(&ec->damage, &ec->damage, &output->region);
 980
 981         pixman_region32_fini(&opaque);
 982         pixman_region32_fini(&new_damage);
 983
 984         if (output->dirty)
 985                 weston_output_update_matrix(output);
 986
 987         output->repaint(output, &output_damage);
 988
 989         pixman_region32_fini(&output_damage);
 990
 991         output->repaint_needed = 0;
 992
 993         weston_compositor_repick(ec);
 994         wl_event_loop_dispatch(ec->input_loop, 0);
 995
 996         wl_list_for_each_safe(cb, cnext, &output->frame_callback_list, link) {
 997                 wl_callback_send_done(&cb->resource, msecs);
 998                 wl_resource_destroy(&cb->resource, 0);
 999         }
1000
1001         wl_list_for_each_safe(animation, next, &ec->animation_list, link)
1002                 animation->frame(animation, output, msecs);
1003 }
1004
1005 static int
1006 weston_compositor_read_input(int fd, uint32_t mask, void *data)
1007 {
1008         struct weston_compositor *compositor = data;
1009
1010         wl_event_loop_dispatch(compositor->input_loop, 0);
1011
1012         return 1;
1013 }
1014
1015 WL_EXPORT void
1016 weston_output_finish_frame(struct weston_output *output, int msecs)
1017 {
1018         struct weston_compositor *compositor = output->compositor;
1019         struct wl_event_loop *loop =
1020                 wl_display_get_event_loop(compositor->wl_display);
1021         int fd;
1022
1023         if (output->repaint_needed) {
1024                 weston_output_repaint(output, msecs);
1025                 return;
1026         }
1027
1028         output->repaint_scheduled = 0;
1029         if (compositor->input_loop_source)
1030                 return;
1031
1032         fd = wl_event_loop_get_fd(compositor->input_loop);
1033         compositor->input_loop_source =
1034                 wl_event_loop_add_fd(loop, fd, WL_EVENT_READABLE,
1035                                      weston_compositor_read_input, compositor);
1036 }
1037
1038 static void
1039 idle_repaint(void *data)
1040 {
1041         struct weston_output *output = data;
1042
1043         weston_output_finish_frame(output, weston_compositor_get_time());
1044 }
1045
1046 WL_EXPORT void
1047 weston_layer_init(struct weston_layer *layer, struct wl_list *below)
1048 {
1049         wl_list_init(&layer->surface_list);
1050         wl_list_insert(below, &layer->link);
1051 }
1052
1053 WL_EXPORT void
1054 weston_compositor_schedule_repaint(struct weston_compositor *compositor)
1055 {
1056         struct weston_output *output;
1057         struct wl_event_loop *loop;
1058
1059         if (compositor->state == WESTON_COMPOSITOR_SLEEPING)
1060                 return;
1061
1062         loop = wl_display_get_event_loop(compositor->wl_display);
1063         wl_list_for_each(output, &compositor->output_list, link) {
1064                 output->repaint_needed = 1;
1065                 if (output->repaint_scheduled)
1066                         continue;
1067
1068                 wl_event_loop_add_idle(loop, idle_repaint, output);
1069                 output->repaint_scheduled = 1;
1070         }
1071
1072         if (compositor->input_loop_source) {
1073                 wl_event_source_remove(compositor->input_loop_source);
1074                 compositor->input_loop_source = NULL;
1075         }
1076 }
1077
1078 WL_EXPORT void
1079 weston_compositor_fade(struct weston_compositor *compositor, float tint)
1080 {
1081         struct weston_surface *surface;
1082         int done;
1083
1084         done = weston_spring_done(&compositor->fade.spring);
1085         compositor->fade.spring.target = tint;
1086         if (weston_spring_done(&compositor->fade.spring))
1087                 return;
1088
1089         if (done)
1090                 compositor->fade.spring.timestamp =
1091                         weston_compositor_get_time();
1092
1093         if (compositor->fade.surface == NULL) {
1094                 surface = weston_surface_create(compositor);
1095                 weston_surface_configure(surface, 0, 0, 8192, 8192);
1096                 weston_surface_set_color(surface, 0.0, 0.0, 0.0, 0.0);
1097                 wl_list_insert(&compositor->fade_layer.surface_list,
1098                                &surface->layer_link);
1099                 weston_surface_assign_output(surface);
1100                 compositor->fade.surface = surface;
1101                 pixman_region32_init(&surface->input);
1102         }
1103
1104         weston_surface_damage(compositor->fade.surface);
1105         if (wl_list_empty(&compositor->fade.animation.link))
1106                 wl_list_insert(compositor->animation_list.prev,
1107                                &compositor->fade.animation.link);
1108 }
1109
1110 static void
1111 surface_destroy(struct wl_client *client, struct wl_resource *resource)
1112 {
1113         wl_resource_destroy(resource, weston_compositor_get_time());
1114 }
1115
1116 WL_EXPORT void
1117 weston_surface_assign_output(struct weston_surface *es)
1118 {
1119         struct weston_compositor *ec = es->compositor;
1120         struct weston_output *output, *new_output;
1121         pixman_region32_t region;
1122         uint32_t max, area;
1123         pixman_box32_t *e;
1124
1125         weston_surface_update_transform(es);
1126
1127         new_output = NULL;
1128         max = 0;
1129         pixman_region32_init(&region);
1130         wl_list_for_each(output, &ec->output_list, link) {
1131                 pixman_region32_intersect(&region, &es->transform.boundingbox,
1132                                           &output->region);
1133
1134                 e = pixman_region32_extents(&region);
1135                 area = (e->x2 - e->x1) * (e->y2 - e->y1);
1136
1137                 if (area >= max) {
1138                         new_output = output;
1139                         max = area;
1140                 }
1141         }
1142         pixman_region32_fini(&region);
1143
1144         es->output = new_output;
1145         if (!wl_list_empty(&es->frame_callback_list)) {
1146                 wl_list_insert_list(new_output->frame_callback_list.prev,
1147                                     &es->frame_callback_list);
1148                 wl_list_init(&es->frame_callback_list);
1149         }
1150 }
1151
1152 static void
1153 surface_attach(struct wl_client *client,
1154                struct wl_resource *resource,
1155                struct wl_resource *buffer_resource, int32_t sx, int32_t sy)
1156 {
1157         struct weston_surface *es = resource->data;
1158         struct wl_buffer *buffer = NULL;
1159
1160         if (buffer_resource)
1161                 buffer = buffer_resource->data;
1162
1163         weston_surface_attach(&es->surface, buffer);
1164
1165         if (buffer && es->configure)
1166                 es->configure(es, sx, sy);
1167 }
1168
1169 static void
1170 surface_damage(struct wl_client *client,
1171                struct wl_resource *resource,
1172                int32_t x, int32_t y, int32_t width, int32_t height)
1173 {
1174         struct weston_surface *es = resource->data;
1175
1176         weston_surface_damage_rectangle(es, x, y, width, height);
1177
1178         if (es->buffer && wl_buffer_is_shm(es->buffer)) {
1179                 glBindTexture(GL_TEXTURE_2D, es->texture);
1180                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1181                              es->pitch, es->buffer->height, 0,
1182                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1183                              wl_shm_buffer_get_data(es->buffer));
1184
1185                 /* Hmm, should use glTexSubImage2D() here but GLES2 doesn't
1186                  * support any unpack attributes except GL_UNPACK_ALIGNMENT. */
1187         }
1188 }
1189
1190 static void
1191 destroy_frame_callback(struct wl_resource *resource)
1192 {
1193         struct weston_frame_callback *cb = resource->data;
1194
1195         wl_list_remove(&cb->link);
1196         free(cb);
1197 }
1198
1199 static void
1200 surface_frame(struct wl_client *client,
1201               struct wl_resource *resource, uint32_t callback)
1202 {
1203         struct weston_frame_callback *cb;
1204         struct weston_surface *es = resource->data;
1205
1206         cb = malloc(sizeof *cb);
1207         if (cb == NULL) {
1208                 wl_resource_post_no_memory(resource);
1209                 return;
1210         }
1211
1212         cb->resource.object.interface = &wl_callback_interface;
1213         cb->resource.object.id = callback;
1214         cb->resource.destroy = destroy_frame_callback;
1215         cb->resource.client = client;
1216         cb->resource.data = cb;
1217
1218         wl_client_add_resource(client, &cb->resource);
1219
1220         if (es->output) {
1221                 wl_list_insert(es->output->frame_callback_list.prev,
1222                                &cb->link);
1223         } else {
1224                 wl_list_insert(es->frame_callback_list.prev, &cb->link);
1225         }
1226 }
1227
1228 static void
1229 surface_set_opaque_region(struct wl_client *client,
1230                           struct wl_resource *resource,
1231                           struct wl_resource *region_resource)
1232 {
1233         struct weston_surface *surface = resource->data;
1234         struct weston_region *region;
1235
1236         pixman_region32_fini(&surface->opaque);
1237
1238         if (region_resource) {
1239                 region = region_resource->data;
1240                 pixman_region32_init_rect(&surface->opaque, 0, 0,
1241                                           surface->geometry.width,
1242                                           surface->geometry.height);
1243                 pixman_region32_intersect(&surface->opaque,
1244                                           &surface->opaque, &region->region);
1245         } else {
1246                 pixman_region32_init(&surface->opaque);
1247         }
1248
1249         surface->geometry.dirty = 1;
1250 }
1251
1252 static void
1253 surface_set_input_region(struct wl_client *client,
1254                          struct wl_resource *resource,
1255                          struct wl_resource *region_resource)
1256 {
1257         struct weston_surface *surface = resource->data;
1258         struct weston_region *region;
1259
1260         if (region_resource) {
1261                 region = region_resource->data;
1262                 pixman_region32_init_rect(&surface->input, 0, 0,
1263                                           surface->geometry.width,
1264                                           surface->geometry.height);
1265                 pixman_region32_intersect(&surface->input,
1266                                           &surface->input, &region->region);
1267         } else {
1268                 pixman_region32_init_rect(&surface->input, 0, 0,
1269                                           surface->geometry.width,
1270                                           surface->geometry.height);
1271         }
1272
1273         weston_compositor_schedule_repaint(surface->compositor);
1274 }
1275
1276 const static struct wl_surface_interface surface_interface = {
1277         surface_destroy,
1278         surface_attach,
1279         surface_damage,
1280         surface_frame,
1281         surface_set_opaque_region,
1282         surface_set_input_region
1283 };
1284
1285 static void
1286 compositor_create_surface(struct wl_client *client,
1287                           struct wl_resource *resource, uint32_t id)
1288 {
1289         struct weston_compositor *ec = resource->data;
1290         struct weston_surface *surface;
1291
1292         surface = weston_surface_create(ec);
1293         if (surface == NULL) {
1294                 wl_resource_post_no_memory(resource);
1295                 return;
1296         }
1297
1298         surface->surface.resource.destroy = destroy_surface;
1299
1300         surface->surface.resource.object.id = id;
1301         surface->surface.resource.object.interface = &wl_surface_interface;
1302         surface->surface.resource.object.implementation =
1303                 (void (**)(void)) &surface_interface;
1304         surface->surface.resource.data = surface;
1305
1306         wl_client_add_resource(client, &surface->surface.resource);
1307 }
1308
1309 static void
1310 destroy_region(struct wl_resource *resource)
1311 {
1312         struct weston_region *region =
1313                 container_of(resource, struct weston_region, resource);
1314
1315         pixman_region32_fini(&region->region);
1316         free(region);
1317 }
1318
1319 static void
1320 region_destroy(struct wl_client *client, struct wl_resource *resource)
1321 {
1322         wl_resource_destroy(resource, weston_compositor_get_time());
1323 }
1324
1325 static void
1326 region_add(struct wl_client *client, struct wl_resource *resource,
1327            int32_t x, int32_t y, int32_t width, int32_t height)
1328 {
1329         struct weston_region *region = resource->data;
1330
1331         pixman_region32_union_rect(&region->region, &region->region,
1332                                    x, y, width, height);
1333 }
1334
1335 static void
1336 region_subtract(struct wl_client *client, struct wl_resource *resource,
1337                 int32_t x, int32_t y, int32_t width, int32_t height)
1338 {
1339         struct weston_region *region = resource->data;
1340         pixman_region32_t rect;
1341
1342         pixman_region32_init_rect(&rect, x, y, width, height);
1343         pixman_region32_subtract(&region->region, &region->region, &rect);
1344         pixman_region32_fini(&rect);
1345 }
1346
1347 static const struct wl_region_interface region_interface = {
1348         region_destroy,
1349         region_add,
1350         region_subtract
1351 };
1352
1353 static void
1354 compositor_create_region(struct wl_client *client,
1355                          struct wl_resource *resource, uint32_t id)
1356 {
1357         struct weston_region *region;
1358
1359         region = malloc(sizeof *region);
1360         if (region == NULL) {
1361                 wl_resource_post_no_memory(resource);
1362                 return;
1363         }
1364
1365         region->resource.destroy = destroy_region;
1366
1367         region->resource.object.id = id;
1368         region->resource.object.interface = &wl_region_interface;
1369         region->resource.object.implementation =
1370                 (void (**)(void)) &region_interface;
1371         region->resource.data = region;
1372
1373         pixman_region32_init(&region->region);
1374
1375         wl_client_add_resource(client, &region->resource);
1376 }
1377
1378 const static struct wl_compositor_interface compositor_interface = {
1379         compositor_create_surface,
1380         compositor_create_region
1381 };
1382
1383 WL_EXPORT void
1384 weston_compositor_wake(struct weston_compositor *compositor)
1385 {
1386         compositor->state = WESTON_COMPOSITOR_ACTIVE;
1387         weston_compositor_fade(compositor, 0.0);
1388
1389         wl_event_source_timer_update(compositor->idle_source,
1390                                      compositor->idle_time * 1000);
1391 }
1392
1393 static void
1394 weston_compositor_dpms_on(struct weston_compositor *compositor)
1395 {
1396         struct weston_output *output;
1397
1398         wl_list_for_each(output, &compositor->output_list, link)
1399                 if (output->set_dpms)
1400                         output->set_dpms(output, WESTON_DPMS_ON);
1401 }
1402
1403 WL_EXPORT void
1404 weston_compositor_activity(struct weston_compositor *compositor)
1405 {
1406         if (compositor->state == WESTON_COMPOSITOR_ACTIVE) {
1407                 weston_compositor_wake(compositor);
1408         } else {
1409                 weston_compositor_dpms_on(compositor);
1410                 compositor->shell->unlock(compositor->shell);
1411         }
1412 }
1413
1414 static void
1415 weston_compositor_idle_inhibit(struct weston_compositor *compositor)
1416 {
1417         weston_compositor_activity(compositor);
1418         compositor->idle_inhibit++;
1419 }
1420
1421 static void
1422 weston_compositor_idle_release(struct weston_compositor *compositor)
1423 {
1424         compositor->idle_inhibit--;
1425         weston_compositor_activity(compositor);
1426 }
1427
1428 static int
1429 idle_handler(void *data)
1430 {
1431         struct weston_compositor *compositor = data;
1432
1433         if (compositor->idle_inhibit)
1434                 return 1;
1435
1436         weston_compositor_fade(compositor, 1.0);
1437
1438         return 1;
1439 }
1440
1441 static  void
1442 weston_input_update_drag_surface(struct wl_input_device *input_device,
1443                                  int dx, int dy);
1444
1445 WL_EXPORT void
1446 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1447 {
1448         struct weston_output *output;
1449         const struct wl_pointer_grab_interface *interface;
1450         struct weston_input_device *wd = (struct weston_input_device *) device;
1451         struct weston_compositor *ec = wd->compositor;
1452         int x_valid = 0, y_valid = 0;
1453         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1454
1455         weston_compositor_activity(ec);
1456
1457         wl_list_for_each(output, &ec->output_list, link) {
1458                 if (output->x <= x && x < output->x + output->current->width)
1459                         x_valid = 1;
1460
1461                 if (output->y <= y && y < output->y + output->current->height)
1462                         y_valid = 1;
1463
1464                 /* FIXME: calculate this only on output addition/deletion */
1465                 if (output->x < min_x)
1466                         min_x = output->x;
1467                 if (output->y < min_y)
1468                         min_y = output->y;
1469
1470                 if (output->x + output->current->width > max_x)
1471                         max_x = output->x + output->current->width - 1;
1472                 if (output->y + output->current->height > max_y)
1473                         max_y = output->y + output->current->height - 1;
1474         }
1475
1476         if (!x_valid) {
1477                 if (x < min_x)
1478                         x = min_x;
1479                 else if (x >= max_x)
1480                         x = max_x;
1481         }
1482         if (!y_valid) {
1483                 if (y < min_y)
1484                         y = min_y;
1485                 else  if (y >= max_y)
1486                         y = max_y;
1487         }
1488
1489         weston_input_update_drag_surface(device,
1490                                          x - device->x, y - device->y);
1491
1492         device->x = x;
1493         device->y = y;
1494
1495         wl_list_for_each(output, &ec->output_list, link)
1496                 if (output->zoom.active &&
1497                     pixman_region32_contains_point(&output->region, x, y, NULL))
1498                         weston_output_update_zoom(output, x, y);
1499
1500         weston_device_repick(device, time);
1501         interface = device->pointer_grab->interface;
1502         interface->motion(device->pointer_grab, time,
1503                           device->pointer_grab->x, device->pointer_grab->y);
1504
1505         if (wd->sprite) {
1506                 weston_surface_set_position(wd->sprite,
1507                                             device->x - wd->hotspot_x,
1508                                             device->y - wd->hotspot_y);
1509
1510                 weston_compositor_schedule_repaint(ec);
1511         }
1512 }
1513
1514 WL_EXPORT void
1515 weston_surface_activate(struct weston_surface *surface,
1516                         struct weston_input_device *device, uint32_t time)
1517 {
1518         wl_input_device_set_keyboard_focus(&device->input_device,
1519                                            &surface->surface, time);
1520         wl_data_device_set_keyboard_focus(&device->input_device);
1521 }
1522
1523 WL_EXPORT void
1524 notify_button(struct wl_input_device *device,
1525               uint32_t time, int32_t button, int32_t state)
1526 {
1527         struct weston_input_device *wd = (struct weston_input_device *) device;
1528         struct weston_compositor *compositor = wd->compositor;
1529
1530         if (state) {
1531                 weston_compositor_idle_inhibit(compositor);
1532                 if (device->button_count == 0) {
1533                         device->grab_button = button;
1534                         device->grab_time = time;
1535                         device->grab_x = device->x;
1536                         device->grab_y = device->y;
1537                 }
1538                 device->button_count++;
1539         } else {
1540                 weston_compositor_idle_release(compositor);
1541                 device->button_count--;
1542         }
1543
1544         weston_compositor_run_binding(compositor, wd, time, 0, button, 0, state);
1545
1546         device->pointer_grab->interface->button(device->pointer_grab, time, button, state);
1547
1548 }
1549
1550 WL_EXPORT void
1551 notify_axis(struct wl_input_device *device,
1552               uint32_t time, uint32_t axis, int32_t value)
1553 {
1554         struct weston_input_device *wd = (struct weston_input_device *) device;
1555         struct weston_compositor *compositor = wd->compositor;
1556
1557         weston_compositor_activity(compositor);
1558
1559         if (value)
1560                 weston_compositor_run_binding(compositor, wd,
1561                                                 time, 0, 0, axis, value);
1562         else
1563                 return;
1564
1565         if (device->pointer_focus_resource)
1566                 wl_resource_post_event(device->pointer_focus_resource,
1567                                 WL_INPUT_DEVICE_AXIS, time, axis, value);
1568 }
1569
1570 static void
1571 update_modifier_state(struct weston_input_device *device,
1572                       uint32_t key, uint32_t state)
1573 {
1574         uint32_t modifier;
1575
1576         switch (key) {
1577         case KEY_LEFTCTRL:
1578         case KEY_RIGHTCTRL:
1579                 modifier = MODIFIER_CTRL;
1580                 break;
1581
1582         case KEY_LEFTALT:
1583         case KEY_RIGHTALT:
1584                 modifier = MODIFIER_ALT;
1585                 break;
1586
1587         case KEY_LEFTMETA:
1588         case KEY_RIGHTMETA:
1589                 modifier = MODIFIER_SUPER;
1590                 break;
1591
1592         default:
1593                 modifier = 0;
1594                 break;
1595         }
1596
1597         if (state)
1598                 device->modifier_state |= modifier;
1599         else
1600                 device->modifier_state &= ~modifier;
1601 }
1602
1603 WL_EXPORT void
1604 notify_key(struct wl_input_device *device,
1605            uint32_t time, uint32_t key, uint32_t state)
1606 {
1607         struct weston_input_device *wd = (struct weston_input_device *) device;
1608         struct weston_compositor *compositor = wd->compositor;
1609         uint32_t *k, *end;
1610
1611         if (state) {
1612                 weston_compositor_idle_inhibit(compositor);
1613                 device->grab_key = key;
1614                 device->grab_time = time;
1615         } else {
1616                 weston_compositor_idle_release(compositor);
1617         }
1618
1619         update_modifier_state(wd, key, state);
1620         end = device->keys.data + device->keys.size;
1621         for (k = device->keys.data; k < end; k++) {
1622                 if (*k == key)
1623                         *k = *--end;
1624         }
1625         device->keys.size = (void *) end - device->keys.data;
1626         if (state) {
1627                 k = wl_array_add(&device->keys, sizeof *k);
1628                 *k = key;
1629         }
1630
1631         if (device->keyboard_grab == &device->default_keyboard_grab)
1632                 weston_compositor_run_binding(compositor, wd,
1633                                               time, key, 0, 0, state);
1634
1635         device->keyboard_grab->interface->key(device->keyboard_grab,
1636                                               time, key, state);
1637 }
1638
1639 WL_EXPORT void
1640 notify_pointer_focus(struct wl_input_device *device,
1641                      uint32_t time, struct weston_output *output,
1642                      int32_t x, int32_t y)
1643 {
1644         struct weston_input_device *wd = (struct weston_input_device *) device;
1645         struct weston_compositor *compositor = wd->compositor;
1646
1647         if (output) {
1648                 weston_input_update_drag_surface(device, x - device->x,
1649                                                  y - device->y);
1650
1651                 device->x = x;
1652                 device->y = y;
1653                 compositor->focus = 1;
1654                 weston_compositor_repick(compositor);
1655         } else {
1656                 compositor->focus = 0;
1657                 weston_compositor_repick(compositor);
1658         }
1659 }
1660
1661 static void
1662 destroy_device_saved_kbd_focus(struct wl_listener *listener,
1663                                struct wl_resource *resource, uint32_t time)
1664 {
1665         struct weston_input_device *wd;
1666
1667         wd = container_of(listener, struct weston_input_device,
1668                           saved_kbd_focus_listener);
1669
1670         wd->saved_kbd_focus = NULL;
1671 }
1672
1673 WL_EXPORT void
1674 notify_keyboard_focus(struct wl_input_device *device,
1675                       uint32_t time, struct weston_output *output,
1676                       struct wl_array *keys)
1677 {
1678         struct weston_input_device *wd =
1679                 (struct weston_input_device *) device;
1680         struct weston_compositor *compositor = wd->compositor;
1681         struct wl_surface *surface;
1682         uint32_t *k;
1683
1684         if (output) {
1685                 wl_array_copy(&wd->input_device.keys, keys);
1686                 wd->modifier_state = 0;
1687                 wl_array_for_each(k, &device->keys) {
1688                         weston_compositor_idle_inhibit(compositor);
1689                         update_modifier_state(wd, *k, 1);
1690                 }
1691
1692                 surface = wd->saved_kbd_focus;
1693
1694                 if (surface) {
1695                         wl_list_remove(&wd->saved_kbd_focus_listener.link);
1696                         wl_input_device_set_keyboard_focus(&wd->input_device,
1697                                                            surface, time);
1698                         wd->saved_kbd_focus = NULL;
1699                 }
1700         } else {
1701                 wl_array_for_each(k, &device->keys)
1702                         weston_compositor_idle_release(compositor);
1703
1704                 wd->modifier_state = 0;
1705
1706                 surface = wd->input_device.keyboard_focus;
1707
1708                 if (surface) {
1709                         wd->saved_kbd_focus = surface;
1710                         wd->saved_kbd_focus_listener.func =
1711                                 destroy_device_saved_kbd_focus;
1712                         wl_list_insert(surface->resource.destroy_listener_list.prev,
1713                                        &wd->saved_kbd_focus_listener.link);
1714                 }
1715
1716                 wl_input_device_set_keyboard_focus(&wd->input_device,
1717                                                    NULL, time);
1718         }
1719 }
1720
1721 /* TODO: share this function with wayland-server.c */
1722 static struct wl_resource *
1723 find_resource_for_surface(struct wl_list *list, struct wl_surface *surface)
1724 {
1725         struct wl_resource *r;
1726
1727         if (!surface)
1728                 return NULL;
1729
1730         wl_list_for_each(r, list, link) {
1731                 if (r->client == surface->resource.client)
1732                         return r;
1733         }
1734
1735         return NULL;
1736 }
1737
1738 static void
1739 lose_touch_focus_resource(struct wl_listener *listener,
1740                           struct wl_resource *resource, uint32_t time)
1741 {
1742         struct weston_input_device *device =
1743                 container_of(listener, struct weston_input_device,
1744                              touch_focus_resource_listener);
1745
1746         device->touch_focus_resource = NULL;
1747 }
1748
1749 static void
1750 lose_touch_focus(struct wl_listener *listener,
1751                  struct wl_resource *resource, uint32_t time)
1752 {
1753         struct weston_input_device *device =
1754                 container_of(listener, struct weston_input_device,
1755                              touch_focus_listener);
1756
1757         device->touch_focus = NULL;
1758 }
1759
1760 static void
1761 touch_set_focus(struct weston_input_device *device,
1762                 struct wl_surface *surface, uint32_t time)
1763 {
1764         struct wl_input_device *input_device = &device->input_device;
1765         struct wl_resource *resource;
1766
1767         if (device->touch_focus == surface)
1768                 return;
1769
1770         if (surface) {
1771                 resource =
1772                         find_resource_for_surface(&input_device->resource_list,
1773                                                   surface);
1774                 if (!resource) {
1775                         fprintf(stderr, "couldn't find resource\n");
1776                         return;
1777                 }
1778
1779                 device->touch_focus_resource_listener.func =
1780                         lose_touch_focus_resource;
1781                 wl_list_insert(resource->destroy_listener_list.prev,
1782                                &device->touch_focus_resource_listener.link);
1783                 device->touch_focus_listener.func = lose_touch_focus;
1784                 wl_list_insert(surface->resource.destroy_listener_list.prev,
1785                                &device->touch_focus_listener.link);
1786
1787                 device->touch_focus = surface;
1788                 device->touch_focus_resource = resource;
1789         } else {
1790                 if (device->touch_focus)
1791                         wl_list_remove(&device->touch_focus_listener.link);
1792                 if (device->touch_focus_resource)
1793                         wl_list_remove(&device->touch_focus_resource_listener.link);
1794                 device->touch_focus = NULL;
1795                 device->touch_focus_resource = NULL;
1796         }
1797 }
1798
1799 /**
1800  * notify_touch - emulates button touches and notifies surfaces accordingly.
1801  *
1802  * It assumes always the correct cycle sequence until it gets here: touch_down
1803  * → touch_update → ... → touch_update → touch_end. The driver is responsible
1804  * for sending along such order.
1805  *
1806  */
1807 WL_EXPORT void
1808 notify_touch(struct wl_input_device *device, uint32_t time, int touch_id,
1809              int x, int y, int touch_type)
1810 {
1811         struct weston_input_device *wd = (struct weston_input_device *) device;
1812         struct weston_compositor *ec = wd->compositor;
1813         struct weston_surface *es;
1814         int32_t sx, sy;
1815
1816         switch (touch_type) {
1817         case WL_INPUT_DEVICE_TOUCH_DOWN:
1818                 weston_compositor_idle_inhibit(ec);
1819
1820                 wd->num_tp++;
1821
1822                 /* the first finger down picks the surface, and all further go
1823                  * to that surface for the remainder of the touch session i.e.
1824                  * until all touch points are up again. */
1825                 if (wd->num_tp == 1) {
1826                         es = weston_compositor_pick_surface(ec, x, y, &sx, &sy);
1827                         touch_set_focus(wd, &es->surface, time);
1828                 } else if (wd->touch_focus) {
1829                         es = (struct weston_surface *) wd->touch_focus;
1830                         weston_surface_from_global(es, x, y, &sx, &sy);
1831                 }
1832
1833                 if (wd->touch_focus_resource && wd->touch_focus)
1834                         wl_input_device_send_touch_down(wd->touch_focus_resource,
1835                                                         time, &wd->touch_focus->resource,
1836                                                         touch_id, sx, sy);
1837                 break;
1838         case WL_INPUT_DEVICE_TOUCH_MOTION:
1839                 es = (struct weston_surface *) wd->touch_focus;
1840                 if (!es)
1841                         break;
1842
1843                 weston_surface_from_global(es, x, y, &sx, &sy);
1844                 if (wd->touch_focus_resource)
1845                         wl_input_device_send_touch_motion(wd->touch_focus_resource,
1846                                                           time, touch_id, sx, sy);
1847                 break;
1848         case WL_INPUT_DEVICE_TOUCH_UP:
1849                 weston_compositor_idle_release(ec);
1850                 wd->num_tp--;
1851
1852                 if (wd->touch_focus_resource)
1853                         wl_input_device_send_touch_up(wd->touch_focus_resource,
1854                                                       time, touch_id);
1855                 if (wd->num_tp == 0)
1856                         touch_set_focus(wd, NULL, time);
1857                 break;
1858         }
1859 }
1860
1861 static void
1862 input_device_attach(struct wl_client *client,
1863                     struct wl_resource *resource,
1864                     uint32_t time,
1865                     struct wl_resource *buffer_resource, int32_t x, int32_t y)
1866 {
1867         struct weston_input_device *device = resource->data;
1868         struct weston_compositor *compositor = device->compositor;
1869         struct wl_buffer *buffer = NULL;
1870
1871         if (time < device->input_device.pointer_focus_time)
1872                 return;
1873         if (device->input_device.pointer_focus == NULL)
1874                 return;
1875         if (device->input_device.pointer_focus->resource.client != client)
1876                 return;
1877
1878         if (buffer_resource)
1879                 buffer = buffer_resource->data;
1880
1881         weston_surface_attach(&device->sprite->surface, buffer);
1882
1883         if (!buffer)
1884                 return;
1885
1886         if (!weston_surface_is_mapped(device->sprite)) {
1887                 wl_list_insert(&compositor->cursor_layer.surface_list,
1888                                &device->sprite->layer_link);
1889                 weston_surface_assign_output(device->sprite);
1890         }
1891
1892
1893         device->hotspot_x = x;
1894         device->hotspot_y = y;
1895         weston_surface_configure(device->sprite,
1896                                  device->input_device.x - device->hotspot_x,
1897                                  device->input_device.y - device->hotspot_y,
1898                                  buffer->width, buffer->height);
1899
1900         surface_damage(NULL, &device->sprite->surface.resource,
1901                        0, 0, buffer->width, buffer->height);
1902 }
1903
1904 const static struct wl_input_device_interface input_device_interface = {
1905         input_device_attach,
1906 };
1907
1908 static void
1909 handle_drag_surface_destroy(struct wl_listener *listener,
1910                             struct wl_resource *resource, uint32_t time)
1911 {
1912         struct weston_input_device *device;
1913
1914         device = container_of(listener, struct weston_input_device,
1915                               drag_surface_destroy_listener);
1916
1917         device->drag_surface = NULL;
1918 }
1919
1920 static void unbind_input_device(struct wl_resource *resource)
1921 {
1922         wl_list_remove(&resource->link);
1923         free(resource);
1924 }
1925
1926 static void
1927 bind_input_device(struct wl_client *client,
1928                   void *data, uint32_t version, uint32_t id)
1929 {
1930         struct wl_input_device *device = data;
1931         struct wl_resource *resource;
1932
1933         resource = wl_client_add_object(client, &wl_input_device_interface,
1934                                         &input_device_interface, id, data);
1935         wl_list_insert(&device->resource_list, &resource->link);
1936         resource->destroy = unbind_input_device;
1937 }
1938
1939 static void
1940 device_handle_new_drag_icon(struct wl_listener *listener,
1941                             struct wl_resource *resource, uint32_t time)
1942 {
1943         struct weston_input_device *device;
1944
1945         device = container_of(listener, struct weston_input_device,
1946                               new_drag_icon_listener);
1947
1948         weston_input_update_drag_surface(&device->input_device, 0, 0);
1949 }
1950
1951 WL_EXPORT void
1952 weston_input_device_init(struct weston_input_device *device,
1953                          struct weston_compositor *ec)
1954 {
1955         wl_input_device_init(&device->input_device);
1956
1957         wl_display_add_global(ec->wl_display, &wl_input_device_interface,
1958                               device, bind_input_device);
1959
1960         device->sprite = weston_surface_create(ec);
1961         device->sprite->surface.resource.data = device->sprite;
1962
1963         device->compositor = ec;
1964         device->hotspot_x = 16;
1965         device->hotspot_y = 16;
1966         device->modifier_state = 0;
1967         device->num_tp = 0;
1968
1969         device->drag_surface_destroy_listener.func = handle_drag_surface_destroy;
1970
1971         wl_list_insert(ec->input_device_list.prev, &device->link);
1972
1973         device->new_drag_icon_listener.func = device_handle_new_drag_icon;
1974         wl_list_insert(device->input_device.drag_icon_listener_list.prev,
1975                        &device->new_drag_icon_listener.link);
1976 }
1977
1978 WL_EXPORT void
1979 weston_input_device_release(struct weston_input_device *device)
1980 {
1981         wl_list_remove(&device->link);
1982         /* The global object is destroyed at wl_display_destroy() time. */
1983
1984         if (device->sprite)
1985                 destroy_surface(&device->sprite->surface.resource);
1986
1987         wl_input_device_release(&device->input_device);
1988 }
1989
1990 static void
1991 drag_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy)
1992 {
1993         weston_surface_configure(es,
1994                                  es->geometry.x + sx, es->geometry.y + sy,
1995                                  es->buffer->width, es->buffer->height);
1996 }
1997
1998 static int
1999 device_setup_new_drag_surface(struct weston_input_device *device,
2000                               struct weston_surface *surface)
2001 {
2002         struct wl_input_device *input_device = &device->input_device;
2003
2004         if (surface->configure) {
2005                 wl_resource_post_error(&surface->surface.resource,
2006                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2007                                        "surface->configure already set");
2008                 return 0;
2009         }
2010
2011         device->drag_surface = surface;
2012
2013         weston_surface_set_position(device->drag_surface,
2014                                     input_device->x, input_device->y);
2015
2016         surface->configure = drag_surface_configure;
2017
2018         wl_list_insert(surface->surface.resource.destroy_listener_list.prev,
2019                        &device->drag_surface_destroy_listener.link);
2020
2021         return 1;
2022 }
2023
2024 static void
2025 device_release_drag_surface(struct weston_input_device *device)
2026 {
2027         device->drag_surface->configure = NULL;
2028         undef_region(&device->drag_surface->input);
2029         wl_list_remove(&device->drag_surface_destroy_listener.link);
2030         device->drag_surface = NULL;
2031 }
2032
2033 static void
2034 device_map_drag_surface(struct weston_input_device *device)
2035 {
2036         if (weston_surface_is_mapped(device->drag_surface) ||
2037             !device->drag_surface->buffer)
2038                 return;
2039
2040         wl_list_insert(&device->sprite->layer_link,
2041                        &device->drag_surface->layer_link);
2042         weston_surface_assign_output(device->drag_surface);
2043         empty_region(&device->drag_surface->input);
2044 }
2045
2046 static  void
2047 weston_input_update_drag_surface(struct wl_input_device *input_device,
2048                                  int dx, int dy)
2049 {
2050         int surface_changed = 0;
2051         struct weston_input_device *device = (struct weston_input_device *)
2052                 input_device;
2053
2054         if (!device->drag_surface && !input_device->drag_surface)
2055                 return;
2056
2057         if (device->drag_surface && input_device->drag_surface &&
2058             (&device->drag_surface->surface.resource !=
2059              &input_device->drag_surface->resource))
2060                 /* between calls to this funcion we got a new drag_surface */
2061                 surface_changed = 1;
2062
2063         if (!input_device->drag_surface || surface_changed) {
2064                 device_release_drag_surface(device);
2065                 if (!surface_changed)
2066                         return;
2067         }
2068
2069         if (!device->drag_surface || surface_changed) {
2070                 struct weston_surface *surface = (struct weston_surface *)
2071                         input_device->drag_surface;
2072                 if (!device_setup_new_drag_surface(device, surface))
2073                         return;
2074         }
2075
2076         /* the client may not have attached a buffer to the drag surface
2077          * when we setup it up, so check if map is needed on every update */
2078         device_map_drag_surface(device);
2079
2080         /* the client may have attached a buffer with a different size to
2081          * the drag surface, causing the input region to be reset */
2082         if (region_is_undefined(&device->drag_surface->input))
2083                 empty_region(&device->drag_surface->input);
2084
2085         if (!dx && !dy)
2086                 return;
2087
2088         weston_surface_set_position(device->drag_surface,
2089                                     device->drag_surface->geometry.x + dx,
2090                                     device->drag_surface->geometry.y + dy);
2091 }
2092
2093 WL_EXPORT void
2094 weston_compositor_update_drag_surfaces(struct weston_compositor *compositor)
2095 {
2096         weston_input_update_drag_surface(compositor->input_device, 0, 0);
2097 }
2098
2099 static void
2100 bind_output(struct wl_client *client,
2101             void *data, uint32_t version, uint32_t id)
2102 {
2103         struct weston_output *output = data;
2104         struct weston_mode *mode;
2105         struct wl_resource *resource;
2106
2107         resource = wl_client_add_object(client,
2108                                         &wl_output_interface, NULL, id, data);
2109
2110         wl_output_send_geometry(resource,
2111                                 output->x,
2112                                 output->y,
2113                                 output->mm_width,
2114                                 output->mm_height,
2115                                 output->subpixel,
2116                                 output->make, output->model);
2117
2118         wl_list_for_each (mode, &output->mode_list, link) {
2119                 wl_output_send_mode(resource,
2120                                     mode->flags,
2121                                     mode->width,
2122                                     mode->height,
2123                                     mode->refresh);
2124         }
2125 }
2126
2127 static const char vertex_shader[] =
2128         "uniform mat4 proj;\n"
2129         "attribute vec2 position;\n"
2130         "attribute vec2 texcoord;\n"
2131         "varying vec2 v_texcoord;\n"
2132         "void main()\n"
2133         "{\n"
2134         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
2135         "   v_texcoord = texcoord;\n"
2136         "}\n";
2137
2138 static const char texture_fragment_shader[] =
2139         "precision mediump float;\n"
2140         "varying vec2 v_texcoord;\n"
2141         "uniform sampler2D tex;\n"
2142         "uniform float alpha;\n"
2143         "uniform float texwidth;\n"
2144         "void main()\n"
2145         "{\n"
2146         "   if (v_texcoord.x < 0.0 || v_texcoord.x > texwidth ||\n"
2147         "       v_texcoord.y < 0.0 || v_texcoord.y > 1.0)\n"
2148         "      discard;\n"
2149         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
2150         "   gl_FragColor = alpha * gl_FragColor;\n"
2151         "}\n";
2152
2153 static const char solid_fragment_shader[] =
2154         "precision mediump float;\n"
2155         "uniform vec4 color;\n"
2156         "void main()\n"
2157         "{\n"
2158         "   gl_FragColor = color\n;"
2159         "}\n";
2160
2161 static int
2162 compile_shader(GLenum type, const char *source)
2163 {
2164         GLuint s;
2165         char msg[512];
2166         GLint status;
2167
2168         s = glCreateShader(type);
2169         glShaderSource(s, 1, &source, NULL);
2170         glCompileShader(s);
2171         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
2172         if (!status) {
2173                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
2174                 fprintf(stderr, "shader info: %s\n", msg);
2175                 return GL_NONE;
2176         }
2177
2178         return s;
2179 }
2180
2181 static int
2182 weston_shader_init(struct weston_shader *shader,
2183                    const char *vertex_source, const char *fragment_source)
2184 {
2185         char msg[512];
2186         GLint status;
2187
2188         shader->vertex_shader =
2189                 compile_shader(GL_VERTEX_SHADER, vertex_source);
2190         shader->fragment_shader =
2191                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
2192
2193         shader->program = glCreateProgram();
2194         glAttachShader(shader->program, shader->vertex_shader);
2195         glAttachShader(shader->program, shader->fragment_shader);
2196         glBindAttribLocation(shader->program, 0, "position");
2197         glBindAttribLocation(shader->program, 1, "texcoord");
2198
2199         glLinkProgram(shader->program);
2200         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
2201         if (!status) {
2202                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
2203                 fprintf(stderr, "link info: %s\n", msg);
2204                 return -1;
2205         }
2206
2207         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
2208         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
2209         shader->alpha_uniform = glGetUniformLocation(shader->program, "alpha");
2210         shader->color_uniform = glGetUniformLocation(shader->program, "color");
2211         shader->texwidth_uniform = glGetUniformLocation(shader->program,
2212                                                         "texwidth");
2213
2214         return 0;
2215 }
2216
2217 WL_EXPORT void
2218 weston_output_destroy(struct weston_output *output)
2219 {
2220         pixman_region32_fini(&output->region);
2221         pixman_region32_fini(&output->previous_damage);
2222 }
2223
2224 WL_EXPORT void
2225 weston_output_update_zoom(struct weston_output *output, int x, int y)
2226 {
2227         float ratio;
2228
2229         if (output->zoom.level <= 0)
2230                 return;
2231
2232         output->zoom.magnification = 1 / output->zoom.level;
2233         ratio = 1 - (1 / output->zoom.magnification);
2234
2235         output->zoom.trans_x = (((float)(x - output->x) / output->current->width) * (ratio * 2)) - ratio;
2236         output->zoom.trans_y = (((float)(y - output->y) / output->current->height) * (ratio * 2)) - ratio;
2237
2238         output->dirty = 1;
2239         weston_output_damage(output);
2240 }
2241
2242 WL_EXPORT void
2243 weston_output_update_matrix(struct weston_output *output)
2244 {
2245         int flip;
2246         struct weston_matrix camera;
2247         struct weston_matrix modelview;
2248
2249         weston_matrix_init(&output->matrix);
2250         weston_matrix_translate(&output->matrix,
2251                                 -(output->x + (output->border.right + output->current->width - output->border.left) / 2.0),
2252                                 -(output->y + (output->border.bottom + output->current->height - output->border.top) / 2.0), 0);
2253
2254         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
2255         weston_matrix_scale(&output->matrix,
2256                             2.0 / (output->current->width + output->border.left + output->border.right),
2257                             flip * 2.0 / (output->current->height + output->border.top + output->border.bottom), 1);
2258         if (output->zoom.active) {
2259                 weston_matrix_init(&camera);
2260                 weston_matrix_init(&modelview);
2261                 weston_matrix_translate(&camera, output->zoom.trans_x, flip * output->zoom.trans_y, 0);
2262                 weston_matrix_invert(&modelview, &camera);
2263                 weston_matrix_scale(&modelview, output->zoom.magnification, output->zoom.magnification, 1.0);
2264                 weston_matrix_multiply(&output->matrix, &modelview);
2265         }
2266
2267         output->dirty = 0;
2268 }
2269
2270 WL_EXPORT void
2271 weston_output_move(struct weston_output *output, int x, int y)
2272 {
2273         output->x = x;
2274         output->y = y;
2275
2276         pixman_region32_init(&output->previous_damage);
2277         pixman_region32_init_rect(&output->region, x, y,
2278                                   output->current->width,
2279                                   output->current->height);
2280 }
2281
2282 WL_EXPORT void
2283 weston_output_init(struct weston_output *output, struct weston_compositor *c,
2284                    int x, int y, int width, int height, uint32_t flags)
2285 {
2286         output->compositor = c;
2287         output->x = x;
2288         output->y = y;
2289         output->border.top = 0;
2290         output->border.bottom = 0;
2291         output->border.left = 0;
2292         output->border.right = 0;
2293         output->mm_width = width;
2294         output->mm_height = height;
2295         output->dirty = 1;
2296
2297         output->zoom.active = 0;
2298         output->zoom.increment = 0.05;
2299         output->zoom.level = 1.0;
2300         output->zoom.magnification = 1.0;
2301         output->zoom.trans_x = 0.0;
2302         output->zoom.trans_y = 0.0;
2303
2304         output->flags = flags;
2305         weston_output_move(output, x, y);
2306
2307         wl_list_init(&output->frame_callback_list);
2308
2309         wl_display_add_global(c->wl_display,
2310                               &wl_output_interface, output, bind_output);
2311 }
2312
2313 static void
2314 compositor_bind(struct wl_client *client,
2315                 void *data, uint32_t version, uint32_t id)
2316 {
2317         struct weston_compositor *compositor = data;
2318
2319         wl_client_add_object(client, &wl_compositor_interface,
2320                              &compositor_interface, id, compositor);
2321 }
2322
2323 WL_EXPORT int
2324 weston_compositor_init(struct weston_compositor *ec, struct wl_display *display)
2325 {
2326         struct wl_event_loop *loop;
2327         const char *extensions;
2328
2329         ec->wl_display = display;
2330
2331         if (!wl_display_add_global(display, &wl_compositor_interface,
2332                                    ec, compositor_bind))
2333                 return -1;
2334
2335         wl_display_init_shm(display);
2336
2337         ec->image_target_texture_2d =
2338                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
2339         ec->image_target_renderbuffer_storage = (void *)
2340                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
2341         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
2342         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
2343         ec->bind_display =
2344                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
2345         ec->unbind_display =
2346                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
2347
2348         extensions = (const char *) glGetString(GL_EXTENSIONS);
2349         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
2350                 fprintf(stderr,
2351                         "GL_EXT_texture_format_BGRA8888 not available\n");
2352                 return -1;
2353         }
2354
2355         if (!strstr(extensions, "GL_EXT_read_format_bgra")) {
2356                 fprintf(stderr, "GL_EXT_read_format_bgra not available\n");
2357                 return -1;
2358         }
2359
2360         extensions =
2361                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
2362         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
2363                 ec->has_bind_display = 1;
2364         if (ec->has_bind_display)
2365                 ec->bind_display(ec->display, ec->wl_display);
2366
2367         wl_list_init(&ec->surface_list);
2368         wl_list_init(&ec->layer_list);
2369         wl_list_init(&ec->input_device_list);
2370         wl_list_init(&ec->output_list);
2371         wl_list_init(&ec->binding_list);
2372         wl_list_init(&ec->animation_list);
2373         weston_spring_init(&ec->fade.spring, 30.0, 1.0, 1.0);
2374         ec->fade.animation.frame = fade_frame;
2375         wl_list_init(&ec->fade.animation.link);
2376
2377         weston_layer_init(&ec->fade_layer, &ec->layer_list);
2378         weston_layer_init(&ec->cursor_layer, &ec->fade_layer.link);
2379
2380         ec->screenshooter = screenshooter_create(ec);
2381
2382         wl_data_device_manager_init(ec->wl_display);
2383
2384         glActiveTexture(GL_TEXTURE0);
2385
2386         if (weston_shader_init(&ec->texture_shader,
2387                              vertex_shader, texture_fragment_shader) < 0)
2388                 return -1;
2389         if (weston_shader_init(&ec->solid_shader,
2390                              vertex_shader, solid_fragment_shader) < 0)
2391                 return -1;
2392
2393         loop = wl_display_get_event_loop(ec->wl_display);
2394         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
2395         wl_event_source_timer_update(ec->idle_source, ec->idle_time * 1000);
2396
2397         ec->input_loop = wl_event_loop_create();
2398
2399         weston_compositor_schedule_repaint(ec);
2400
2401         return 0;
2402 }
2403
2404 WL_EXPORT void
2405 weston_compositor_shutdown(struct weston_compositor *ec)
2406 {
2407         struct weston_output *output, *next;
2408
2409         wl_event_source_remove(ec->idle_source);
2410
2411         if (ec->screenshooter)
2412                 screenshooter_destroy(ec->screenshooter);
2413
2414         /* Destroy all outputs associated with this compositor */
2415         wl_list_for_each_safe(output, next, &ec->output_list, link)
2416                 output->destroy(output);
2417
2418         weston_binding_list_destroy_all(&ec->binding_list);
2419
2420         wl_array_release(&ec->vertices);
2421         wl_array_release(&ec->indices);
2422 }
2423
2424 static int on_term_signal(int signal_number, void *data)
2425 {
2426         struct wl_display *display = data;
2427
2428         fprintf(stderr, "caught signal %d\n", signal_number);
2429         wl_display_terminate(display);
2430
2431         return 1;
2432 }
2433
2434 static void
2435 on_segv_signal(int s, siginfo_t *siginfo, void *context)
2436 {
2437         void *buffer[32];
2438         int i, count;
2439         Dl_info info;
2440
2441         fprintf(stderr, "caught segv\n");
2442
2443         count = backtrace(buffer, ARRAY_LENGTH(buffer));
2444         for (i = 0; i < count; i++) {
2445                 dladdr(buffer[i], &info);
2446                 fprintf(stderr, "  [%016lx]  %s  (%s)\n",
2447                         (long) buffer[i],
2448                         info.dli_sname ? info.dli_sname : "--",
2449                         info.dli_fname);
2450         }
2451
2452         longjmp(segv_jmp_buf, 1);
2453 }
2454
2455
2456 static void *
2457 load_module(const char *name, const char *entrypoint, void **handle)
2458 {
2459         char path[PATH_MAX];
2460         void *module, *init;
2461
2462         if (name[0] != '/')
2463                 snprintf(path, sizeof path, MODULEDIR "/%s", name);
2464         else
2465                 snprintf(path, sizeof path, "%s", name);
2466
2467         module = dlopen(path, RTLD_LAZY);
2468         if (!module) {
2469                 fprintf(stderr,
2470                         "failed to load module: %s\n", dlerror());
2471                 return NULL;
2472         }
2473
2474         init = dlsym(module, entrypoint);
2475         if (!init) {
2476                 fprintf(stderr,
2477                         "failed to lookup init function: %s\n", dlerror());
2478                 return NULL;
2479         }
2480
2481         return init;
2482 }
2483
2484 int main(int argc, char *argv[])
2485 {
2486         struct wl_display *display;
2487         struct weston_compositor *ec;
2488         struct wl_event_source *signals[4];
2489         struct wl_event_loop *loop;
2490         struct sigaction segv_action;
2491         void *shell_module, *backend_module;
2492         int (*shell_init)(struct weston_compositor *ec);
2493         struct weston_compositor
2494                 *(*backend_init)(struct wl_display *display,
2495                                  int argc, char *argv[]);
2496         int i;
2497         char *backend = NULL;
2498         char *shell = NULL;
2499         int32_t idle_time = 300;
2500         int32_t xserver;
2501         char *socket_name = NULL;
2502         char *config_file;
2503
2504         const const struct config_key shell_config_keys[] = {
2505                 { "type", CONFIG_KEY_STRING, &shell },
2506         };
2507
2508         const const struct config_section cs[] = {
2509                 { "shell",
2510                   shell_config_keys, ARRAY_LENGTH(shell_config_keys) },
2511         };
2512
2513         const struct weston_option core_options[] = {
2514                 { WESTON_OPTION_STRING, "backend", 'B', &backend },
2515                 { WESTON_OPTION_STRING, "socket", 'S', &socket_name },
2516                 { WESTON_OPTION_INTEGER, "idle-time", 'i', &idle_time },
2517                 { WESTON_OPTION_BOOLEAN, "xserver", 0, &xserver },
2518         };
2519
2520         argc = parse_options(core_options,
2521                              ARRAY_LENGTH(core_options), argc, argv);
2522
2523         display = wl_display_create();
2524
2525         loop = wl_display_get_event_loop(display);
2526         signals[0] = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal,
2527                                               display);
2528         signals[1] = wl_event_loop_add_signal(loop, SIGINT, on_term_signal,
2529                                               display);
2530         signals[2] = wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal,
2531                                               display);
2532
2533         wl_list_init(&child_process_list);
2534         signals[3] = wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler,
2535                                               NULL);
2536
2537         segv_action.sa_flags = SA_SIGINFO | SA_RESETHAND;
2538         segv_action.sa_sigaction = on_segv_signal;
2539         sigemptyset(&segv_action.sa_mask);
2540         sigaction(SIGSEGV, &segv_action, NULL);
2541
2542         if (!backend) {
2543                 if (getenv("WAYLAND_DISPLAY"))
2544                         backend = "wayland-backend.so";
2545                 else if (getenv("DISPLAY"))
2546                         backend = "x11-backend.so";
2547                 else if (getenv("OPENWFD"))
2548                         backend = "openwfd-backend.so";
2549                 else
2550                         backend = "drm-backend.so";
2551         }
2552
2553         config_file = config_file_path("weston.ini");
2554         parse_config_file(config_file, cs, ARRAY_LENGTH(cs), shell);
2555         free(config_file);
2556
2557         if (!shell)
2558                 shell = "desktop-shell.so";
2559
2560         backend_init = load_module(backend, "backend_init", &backend_module);
2561         if (!backend_init)
2562                 exit(EXIT_FAILURE);
2563
2564         shell_init = load_module(shell, "shell_init", &shell_module);
2565         if (!shell_init)
2566                 exit(EXIT_FAILURE);
2567
2568         ec = backend_init(display, argc, argv);
2569         if (ec == NULL) {
2570                 fprintf(stderr, "failed to create compositor\n");
2571                 exit(EXIT_FAILURE);
2572         }
2573
2574         for (i = 1; argv[i]; i++)
2575                 fprintf(stderr, "unhandled option: %s\n", argv[i]);
2576         if (argv[1])
2577                 exit(EXIT_FAILURE);
2578
2579         ec->option_idle_time = idle_time;
2580         ec->idle_time = idle_time;
2581
2582 #ifdef BUILD_XSERVER_LAUNCHER
2583         if (xserver)
2584                 weston_xserver_init(ec);
2585 #endif
2586
2587         if (shell_init(ec) < 0)
2588                 exit(EXIT_FAILURE);
2589
2590         if (wl_display_add_socket(display, socket_name)) {
2591                 fprintf(stderr, "failed to add socket: %m\n");
2592                 exit(EXIT_FAILURE);
2593         }
2594
2595         weston_compositor_dpms_on(ec);
2596         weston_compositor_wake(ec);
2597         if (setjmp(segv_jmp_buf) == 0)
2598                 wl_display_run(display);
2599
2600         /* prevent further rendering while shutting down */
2601         ec->state = WESTON_COMPOSITOR_SLEEPING;
2602
2603 #ifdef BUILD_XSERVER_LAUNCHER
2604         if (xserver)
2605                 weston_xserver_destroy(ec);
2606 #endif
2607
2608         ec->shell->destroy(ec->shell);
2609
2610         if (ec->has_bind_display)
2611                 ec->unbind_display(ec->display, display);
2612
2613         for (i = ARRAY_LENGTH(signals); i;)
2614                 wl_event_source_remove(signals[--i]);
2615
2616         ec->destroy(ec);
2617         wl_display_destroy(display);
2618
2619         return 0;
2620 }