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/socket.h>
  39 #include <unistd.h>
  40 #include <math.h>
  41 #include <linux/input.h>
  42 #include <dlfcn.h>
  43 #include <signal.h>
  44 #include <setjmp.h>
  45
  46 #include <wayland-server.h>
  47 #include "compositor.h"
  48 #include "../shared/os-compatibility.h"
  49
  50 static struct wl_list child_process_list;
  51 static jmp_buf segv_jmp_buf;
  52
  53 static int
  54 sigchld_handler(int signal_number, void *data)
  55 {
  56         struct weston_process *p;
  57         int status;
  58         pid_t pid;
  59
  60         pid = waitpid(-1, &status, WNOHANG);
  61         if (!pid)
  62                 return 1;
  63
  64         wl_list_for_each(p, &child_process_list, link) {
  65                 if (p->pid == pid)
  66                         break;
  67         }
  68
  69         if (&p->link == &child_process_list) {
  70                 fprintf(stderr, "unknown child process exited\n");
  71                 return 1;
  72         }
  73
  74         wl_list_remove(&p->link);
  75         p->cleanup(p, status);
  76
  77         return 1;
  78 }
  79
  80 WL_EXPORT int
  81 weston_output_switch_mode(struct weston_output *output, struct weston_mode *mode)
  82 {
  83         if (!output->switch_mode)
  84                 return -1;
  85
  86         return output->switch_mode(output, mode);
  87 }
  88
  89 WL_EXPORT void
  90 weston_watch_process(struct weston_process *process)
  91 {
  92         wl_list_insert(&child_process_list, &process->link);
  93 }
  94
  95 static void
  96 child_client_exec(int sockfd, const char *path)
  97 {
  98         int clientfd;
  99         char s[32];
 100         sigset_t allsigs;
 101
 102         /* do not give our signal mask to the new process */
 103         sigfillset(&allsigs);
 104         sigprocmask(SIG_UNBLOCK, &allsigs, NULL);
 105
 106         /* Launch clients as the user. */
 107         seteuid(getuid());
 108
 109         /* SOCK_CLOEXEC closes both ends, so we dup the fd to get a
 110          * non-CLOEXEC fd to pass through exec. */
 111         clientfd = dup(sockfd);
 112         if (clientfd == -1) {
 113                 fprintf(stderr, "compositor: dup failed: %m\n");
 114                 return;
 115         }
 116
 117         snprintf(s, sizeof s, "%d", clientfd);
 118         setenv("WAYLAND_SOCKET", s, 1);
 119
 120         if (execl(path, path, NULL) < 0)
 121                 fprintf(stderr, "compositor: executing '%s' failed: %m\n",
 122                         path);
 123 }
 124
 125 WL_EXPORT struct wl_client *
 126 weston_client_launch(struct weston_compositor *compositor,
 127                      struct weston_process *proc,
 128                      const char *path,
 129                      weston_process_cleanup_func_t cleanup)
 130 {
 131         int sv[2];
 132         pid_t pid;
 133         struct wl_client *client;
 134
 135         if (os_socketpair_cloexec(AF_UNIX, SOCK_STREAM, 0, sv) < 0) {
 136                 fprintf(stderr, "weston_client_launch: "
 137                         "socketpair failed while launching '%s': %m\n",
 138                         path);
 139                 return NULL;
 140         }
 141
 142         pid = fork();
 143         if (pid == -1) {
 144                 close(sv[0]);
 145                 close(sv[1]);
 146                 fprintf(stderr,  "weston_client_launch: "
 147                         "fork failed while launching '%s': %m\n", path);
 148                 return NULL;
 149         }
 150
 151         if (pid == 0) {
 152                 child_client_exec(sv[1], path);
 153                 exit(-1);
 154         }
 155
 156         close(sv[1]);
 157
 158         client = wl_client_create(compositor->wl_display, sv[0]);
 159         if (!client) {
 160                 close(sv[0]);
 161                 fprintf(stderr, "weston_client_launch: "
 162                         "wl_client_create failed while launching '%s'.\n",
 163                         path);
 164                 return NULL;
 165         }
 166
 167         proc->pid = pid;
 168         proc->cleanup = cleanup;
 169         weston_watch_process(proc);
 170
 171         return client;
 172 }
 173
 174 static void
 175 surface_handle_buffer_destroy(struct wl_listener *listener, void *data)
 176 {
 177         struct weston_surface *es =
 178                 container_of(listener, struct weston_surface,
 179                              buffer_destroy_listener);
 180
 181         es->buffer = NULL;
 182 }
 183
 184 static const pixman_region32_data_t undef_region_data;
 185
 186 static void
 187 undef_region(pixman_region32_t *region)
 188 {
 189         if (region->data != &undef_region_data)
 190                 pixman_region32_fini(region);
 191         region->data = (pixman_region32_data_t *) &undef_region_data;
 192 }
 193
 194 static int
 195 region_is_undefined(pixman_region32_t *region)
 196 {
 197         return region->data == &undef_region_data;
 198 }
 199
 200 static void
 201 empty_region(pixman_region32_t *region)
 202 {
 203         if (!region_is_undefined(region))
 204                 pixman_region32_fini(region);
 205
 206         pixman_region32_init(region);
 207 }
 208
 209 WL_EXPORT struct weston_surface *
 210 weston_surface_create(struct weston_compositor *compositor)
 211 {
 212         struct weston_surface *surface;
 213
 214         surface = calloc(1, sizeof *surface);
 215         if (surface == NULL)
 216                 return NULL;
 217
 218         wl_signal_init(&surface->surface.resource.destroy_signal);
 219
 220         wl_list_init(&surface->link);
 221         wl_list_init(&surface->layer_link);
 222
 223         surface->surface.resource.client = NULL;
 224
 225         surface->compositor = compositor;
 226         surface->image = EGL_NO_IMAGE_KHR;
 227         surface->alpha = 1.0;
 228         surface->brightness = 1.0;
 229         surface->saturation = 1.0;
 230         surface->blend = 1;
 231         surface->opaque_rect[0] = 0.0;
 232         surface->opaque_rect[1] = 0.0;
 233         surface->opaque_rect[2] = 0.0;
 234         surface->opaque_rect[3] = 0.0;
 235         surface->pitch = 1;
 236
 237         surface->buffer = NULL;
 238         surface->output = NULL;
 239
 240         pixman_region32_init(&surface->damage);
 241         pixman_region32_init(&surface->opaque);
 242         pixman_region32_init(&surface->clip);
 243         undef_region(&surface->input);
 244         pixman_region32_init(&surface->transform.opaque);
 245         wl_list_init(&surface->frame_callback_list);
 246
 247         surface->buffer_destroy_listener.notify =
 248                 surface_handle_buffer_destroy;
 249
 250         wl_list_init(&surface->geometry.transformation_list);
 251         wl_list_insert(&surface->geometry.transformation_list,
 252                        &surface->transform.position.link);
 253         weston_matrix_init(&surface->transform.position.matrix);
 254         pixman_region32_init(&surface->transform.boundingbox);
 255         surface->geometry.dirty = 1;
 256
 257         return surface;
 258 }
 259
 260 WL_EXPORT void
 261 weston_surface_set_color(struct weston_surface *surface,
 262                  GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha)
 263 {
 264         surface->color[0] = red;
 265         surface->color[1] = green;
 266         surface->color[2] = blue;
 267         surface->color[3] = alpha;
 268         surface->shader = &surface->compositor->solid_shader;
 269 }
 270
 271 static void
 272 surface_to_global_float(struct weston_surface *surface,
 273                         GLfloat sx, GLfloat sy, GLfloat *x, GLfloat *y)
 274 {
 275         if (surface->transform.enabled) {
 276                 struct weston_vector v = { { sx, sy, 0.0f, 1.0f } };
 277
 278                 weston_matrix_transform(&surface->transform.matrix, &v);
 279
 280                 if (fabsf(v.f[3]) < 1e-6) {
 281                         fprintf(stderr, "warning: numerical instability in "
 282                                 "weston_surface_to_global(), divisor = %g\n",
 283                                 v.f[3]);
 284                         *x = 0;
 285                         *y = 0;
 286                         return;
 287                 }
 288
 289                 *x = v.f[0] / v.f[3];
 290                 *y = v.f[1] / v.f[3];
 291         } else {
 292                 *x = sx + surface->geometry.x;
 293                 *y = sy + surface->geometry.y;
 294         }
 295 }
 296
 297 WL_EXPORT void
 298 weston_surface_damage_below(struct weston_surface *surface)
 299 {
 300         struct weston_compositor *compositor = surface->compositor;
 301         pixman_region32_t damage;
 302
 303         pixman_region32_init(&damage);
 304         pixman_region32_subtract(&damage, &surface->transform.boundingbox,
 305                                  &surface->clip);
 306         pixman_region32_union(&compositor->damage,
 307                               &compositor->damage, &damage);
 308         pixman_region32_fini(&damage);
 309 }
 310
 311 static void
 312 surface_compute_bbox(struct weston_surface *surface, int32_t sx, int32_t sy,
 313                      int32_t width, int32_t height,
 314                      pixman_region32_t *bbox)
 315 {
 316         GLfloat min_x = HUGE_VALF,  min_y = HUGE_VALF;
 317         GLfloat max_x = -HUGE_VALF, max_y = -HUGE_VALF;
 318         int32_t s[4][2] = {
 319                 { sx,         sy },
 320                 { sx,         sy + height },
 321                 { sx + width, sy },
 322                 { sx + width, sy + height }
 323         };
 324         GLfloat int_x, int_y;
 325         int i;
 326
 327         for (i = 0; i < 4; ++i) {
 328                 GLfloat x, y;
 329                 surface_to_global_float(surface, s[i][0], s[i][1], &x, &y);
 330                 if (x < min_x)
 331                         min_x = x;
 332                 if (x > max_x)
 333                         max_x = x;
 334                 if (y < min_y)
 335                         min_y = y;
 336                 if (y > max_y)
 337                         max_y = y;
 338         }
 339
 340         int_x = floorf(min_x);
 341         int_y = floorf(min_y);
 342         pixman_region32_init_rect(bbox, int_x, int_y,
 343                                   ceilf(max_x) - int_x, ceilf(max_y) - int_y);
 344 }
 345
 346 static void
 347 weston_surface_update_transform_disable(struct weston_surface *surface)
 348 {
 349         surface->transform.enabled = 0;
 350
 351         /* round off fractions when not transformed */
 352         surface->geometry.x = roundf(surface->geometry.x);
 353         surface->geometry.y = roundf(surface->geometry.y);
 354
 355         pixman_region32_init_rect(&surface->transform.boundingbox,
 356                                   surface->geometry.x,
 357                                   surface->geometry.y,
 358                                   surface->geometry.width,
 359                                   surface->geometry.height);
 360
 361         if (surface->alpha == 1.0) {
 362                 pixman_region32_copy(&surface->transform.opaque,
 363                                      &surface->opaque);
 364                 pixman_region32_translate(&surface->transform.opaque,
 365                                           surface->geometry.x,
 366                                           surface->geometry.y);
 367         }
 368 }
 369
 370 static int
 371 weston_surface_update_transform_enable(struct weston_surface *surface)
 372 {
 373         struct weston_matrix *matrix = &surface->transform.matrix;
 374         struct weston_matrix *inverse = &surface->transform.inverse;
 375         struct weston_transform *tform;
 376
 377         surface->transform.enabled = 1;
 378
 379         /* Otherwise identity matrix, but with x and y translation. */
 380         surface->transform.position.matrix.d[12] = surface->geometry.x;
 381         surface->transform.position.matrix.d[13] = surface->geometry.y;
 382
 383         weston_matrix_init(matrix);
 384         wl_list_for_each(tform, &surface->geometry.transformation_list, link)
 385                 weston_matrix_multiply(matrix, &tform->matrix);
 386
 387         if (weston_matrix_invert(inverse, matrix) < 0) {
 388                 /* Oops, bad total transformation, not invertible */
 389                 fprintf(stderr, "error: weston_surface %p"
 390                         " transformation not invertible.\n", surface);
 391                 return -1;
 392         }
 393
 394         surface_compute_bbox(surface, 0, 0, surface->geometry.width,
 395                              surface->geometry.height,
 396                              &surface->transform.boundingbox);
 397
 398         return 0;
 399 }
 400
 401 WL_EXPORT void
 402 weston_surface_update_transform(struct weston_surface *surface)
 403 {
 404         if (!surface->geometry.dirty)
 405                 return;
 406
 407         surface->geometry.dirty = 0;
 408
 409         weston_surface_damage_below(surface);
 410
 411         pixman_region32_fini(&surface->transform.boundingbox);
 412         pixman_region32_fini(&surface->transform.opaque);
 413         pixman_region32_init(&surface->transform.opaque);
 414
 415         if (region_is_undefined(&surface->input))
 416                 pixman_region32_init_rect(&surface->input, 0, 0,
 417                                           surface->geometry.width,
 418                                           surface->geometry.height);
 419
 420         /* transform.position is always in transformation_list */
 421         if (surface->geometry.transformation_list.next ==
 422             &surface->transform.position.link &&
 423             surface->geometry.transformation_list.prev ==
 424             &surface->transform.position.link) {
 425                 weston_surface_update_transform_disable(surface);
 426         } else {
 427                 if (weston_surface_update_transform_enable(surface) < 0)
 428                         weston_surface_update_transform_disable(surface);
 429         }
 430
 431         /* weston_surface_damage() without update */
 432         pixman_region32_union(&surface->damage, &surface->damage,
 433                               &surface->transform.boundingbox);
 434
 435         if (weston_surface_is_mapped(surface))
 436                 weston_surface_assign_output(surface);
 437
 438         weston_compositor_schedule_repaint(surface->compositor);
 439 }
 440
 441 WL_EXPORT void
 442 weston_surface_to_global_float(struct weston_surface *surface,
 443                                GLfloat sx, GLfloat sy, GLfloat *x, GLfloat *y)
 444 {
 445         surface_to_global_float(surface, sx, sy, x, y);
 446 }
 447
 448 WL_EXPORT void
 449 weston_surface_to_global_fixed(struct weston_surface *surface,
 450                                wl_fixed_t sx, wl_fixed_t sy,
 451                                wl_fixed_t *x, wl_fixed_t *y)
 452 {
 453         GLfloat xf, yf;
 454
 455         weston_surface_to_global_float(surface,
 456                                        wl_fixed_to_double(sx),
 457                                        wl_fixed_to_double(sy),
 458                                        &xf, &yf);
 459         *x = wl_fixed_from_double(xf);
 460         *y = wl_fixed_from_double(yf);
 461 }
 462
 463 WL_EXPORT void
 464 weston_surface_to_global(struct weston_surface *surface,
 465                          int32_t sx, int32_t sy, int32_t *x, int32_t *y)
 466 {
 467         GLfloat xf, yf;
 468
 469         weston_surface_to_global_float(surface, sx, sy, &xf, &yf);
 470         *x = floorf(xf);
 471         *y = floorf(yf);
 472 }
 473
 474 static void
 475 surface_from_global_float(struct weston_surface *surface,
 476                           GLfloat x, GLfloat y, GLfloat *sx, GLfloat *sy)
 477 {
 478         if (surface->transform.enabled) {
 479                 struct weston_vector v = { { x, y, 0.0f, 1.0f } };
 480
 481                 weston_matrix_transform(&surface->transform.inverse, &v);
 482
 483                 if (fabsf(v.f[3]) < 1e-6) {
 484                         fprintf(stderr, "warning: numerical instability in "
 485                                 "weston_surface_from_global(), divisor = %g\n",
 486                                 v.f[3]);
 487                         *sx = 0;
 488                         *sy = 0;
 489                         return;
 490                 }
 491
 492                 *sx = v.f[0] / v.f[3];
 493                 *sy = v.f[1] / v.f[3];
 494         } else {
 495                 *sx = x - surface->geometry.x;
 496                 *sy = y - surface->geometry.y;
 497         }
 498 }
 499
 500 WL_EXPORT void
 501 weston_surface_from_global_fixed(struct weston_surface *surface,
 502                                  wl_fixed_t x, wl_fixed_t y,
 503                                  wl_fixed_t *sx, wl_fixed_t *sy)
 504 {
 505         GLfloat sxf, syf;
 506
 507         surface_from_global_float(surface,
 508                                   wl_fixed_to_double(x),
 509                                   wl_fixed_to_double(y),
 510                                   &sxf, &syf);
 511         *sx = wl_fixed_from_double(sxf);
 512         *sy = wl_fixed_from_double(syf);
 513 }
 514
 515 WL_EXPORT void
 516 weston_surface_from_global(struct weston_surface *surface,
 517                            int32_t x, int32_t y, int32_t *sx, int32_t *sy)
 518 {
 519         GLfloat sxf, syf;
 520
 521         surface_from_global_float(surface, x, y, &sxf, &syf);
 522         *sx = floorf(sxf);
 523         *sy = floorf(syf);
 524 }
 525
 526 static void
 527 weston_surface_damage_rectangle(struct weston_surface *surface,
 528                                 int32_t sx, int32_t sy,
 529                                 int32_t width, int32_t height)
 530 {
 531         if (surface->transform.enabled) {
 532                 pixman_region32_t box;
 533                 surface_compute_bbox(surface, sx, sy, width, height, &box);
 534                 pixman_region32_union(&surface->damage, &surface->damage,
 535                                       &box);
 536                 pixman_region32_fini(&box);
 537         } else {
 538                 pixman_region32_union_rect(&surface->damage, &surface->damage,
 539                                            surface->geometry.x + sx,
 540                                            surface->geometry.y + sy,
 541                                            width, height);
 542         }
 543
 544         weston_compositor_schedule_repaint(surface->compositor);
 545 }
 546
 547 WL_EXPORT void
 548 weston_surface_damage(struct weston_surface *surface)
 549 {
 550         pixman_region32_union(&surface->damage, &surface->damage,
 551                               &surface->transform.boundingbox);
 552
 553         weston_compositor_schedule_repaint(surface->compositor);
 554 }
 555
 556 WL_EXPORT void
 557 weston_surface_configure(struct weston_surface *surface,
 558                          GLfloat x, GLfloat y, int width, int height)
 559 {
 560         surface->geometry.x = x;
 561         surface->geometry.y = y;
 562         surface->geometry.width = width;
 563         surface->geometry.height = height;
 564         surface->geometry.dirty = 1;
 565 }
 566
 567 WL_EXPORT void
 568 weston_surface_set_position(struct weston_surface *surface,
 569                             GLfloat x, GLfloat y)
 570 {
 571         surface->geometry.x = x;
 572         surface->geometry.y = y;
 573         surface->geometry.dirty = 1;
 574 }
 575
 576 WL_EXPORT int
 577 weston_surface_is_mapped(struct weston_surface *surface)
 578 {
 579         if (surface->output)
 580                 return 1;
 581         else
 582                 return 0;
 583 }
 584
 585 WL_EXPORT uint32_t
 586 weston_compositor_get_time(void)
 587 {
 588        struct timeval tv;
 589
 590        gettimeofday(&tv, NULL);
 591
 592        return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 593 }
 594
 595 static struct weston_surface *
 596 weston_compositor_pick_surface(struct weston_compositor *compositor,
 597                                wl_fixed_t x, wl_fixed_t y,
 598                                wl_fixed_t *sx, wl_fixed_t *sy)
 599 {
 600         struct weston_surface *surface;
 601
 602         wl_list_for_each(surface, &compositor->surface_list, link) {
 603                 weston_surface_from_global_fixed(surface, x, y, sx, sy);
 604                 if (pixman_region32_contains_point(&surface->input,
 605                                                    wl_fixed_to_int(*sx),
 606                                                    wl_fixed_to_int(*sy),
 607                                                    NULL))
 608                         return surface;
 609         }
 610
 611         return NULL;
 612 }
 613
 614 static void
 615 weston_device_repick(struct wl_seat *seat)
 616 {
 617         struct weston_seat *ws = (struct weston_seat *) seat;
 618         const struct wl_pointer_grab_interface *interface;
 619         struct weston_surface *surface, *focus;
 620
 621         surface = weston_compositor_pick_surface(ws->compositor,
 622                                                  seat->pointer->x,
 623                                                  seat->pointer->y,
 624                                                  &seat->pointer->current_x,
 625                                                  &seat->pointer->current_y);
 626
 627         if (&surface->surface != seat->pointer->current) {
 628                 interface = seat->pointer->grab->interface;
 629                 interface->focus(seat->pointer->grab, &surface->surface,
 630                                  seat->pointer->current_x,
 631                                  seat->pointer->current_y);
 632                 seat->pointer->current = &surface->surface;
 633         }
 634
 635         focus = (struct weston_surface *) seat->pointer->grab->focus;
 636         if (focus)
 637                 weston_surface_from_global_fixed(focus,
 638                                                  seat->pointer->x,
 639                                                  seat->pointer->y,
 640                                                  &seat->pointer->grab->x,
 641                                                  &seat->pointer->grab->y);
 642 }
 643
 644 WL_EXPORT void
 645 weston_compositor_repick(struct weston_compositor *compositor)
 646 {
 647         struct weston_seat *seat;
 648
 649         if (!compositor->focus)
 650                 return;
 651
 652         wl_list_for_each(seat, &compositor->seat_list, link)
 653                 weston_device_repick(&seat->seat);
 654 }
 655
 656 static void
 657 weston_surface_unmap(struct weston_surface *surface)
 658 {
 659         struct wl_seat *seat = &surface->compositor->seat->seat;
 660
 661         weston_surface_damage_below(surface);
 662         surface->output = NULL;
 663         wl_list_remove(&surface->link);
 664         wl_list_remove(&surface->layer_link);
 665
 666         if (seat->keyboard->focus == &surface->surface)
 667                 wl_keyboard_set_focus(seat->keyboard, NULL);
 668         if (seat->pointer->focus == &surface->surface)
 669                 wl_pointer_set_focus(seat->pointer,
 670                                      NULL,
 671                                      wl_fixed_from_int(0),
 672                                      wl_fixed_from_int(0));
 673
 674         weston_compositor_schedule_repaint(surface->compositor);
 675 }
 676
 677 static void
 678 destroy_surface(struct wl_resource *resource)
 679 {
 680         struct weston_surface *surface =
 681                 container_of(resource,
 682                              struct weston_surface, surface.resource);
 683         struct weston_compositor *compositor = surface->compositor;
 684
 685         if (weston_surface_is_mapped(surface))
 686                 weston_surface_unmap(surface);
 687
 688         if (surface->texture)
 689                 glDeleteTextures(1, &surface->texture);
 690
 691         if (surface->buffer)
 692                 wl_list_remove(&surface->buffer_destroy_listener.link);
 693
 694         if (surface->image != EGL_NO_IMAGE_KHR)
 695                 compositor->destroy_image(compositor->display,
 696                                           surface->image);
 697
 698         pixman_region32_fini(&surface->transform.boundingbox);
 699         pixman_region32_fini(&surface->damage);
 700         pixman_region32_fini(&surface->opaque);
 701         pixman_region32_fini(&surface->clip);
 702         if (!region_is_undefined(&surface->input))
 703                 pixman_region32_fini(&surface->input);
 704
 705         free(surface);
 706 }
 707
 708 WL_EXPORT void
 709 weston_surface_destroy(struct weston_surface *surface)
 710 {
 711         /* Not a valid way to destroy a client surface */
 712         assert(surface->surface.resource.client == NULL);
 713
 714         destroy_surface(&surface->surface.resource);
 715 }
 716
 717 static void
 718 weston_surface_attach(struct wl_surface *surface, struct wl_buffer *buffer)
 719 {
 720         struct weston_surface *es = (struct weston_surface *) surface;
 721         struct weston_compositor *ec = es->compositor;
 722
 723         if (es->buffer) {
 724                 weston_buffer_post_release(es->buffer);
 725                 wl_list_remove(&es->buffer_destroy_listener.link);
 726         }
 727
 728         es->buffer = buffer;
 729
 730         if (!buffer) {
 731                 if (weston_surface_is_mapped(es))
 732                         weston_surface_unmap(es);
 733                 return;
 734         }
 735
 736         buffer->busy_count++;
 737         wl_signal_add(&es->buffer->resource.destroy_signal,
 738                       &es->buffer_destroy_listener);
 739
 740         if (es->geometry.width != buffer->width ||
 741             es->geometry.height != buffer->height) {
 742                 undef_region(&es->input);
 743                 pixman_region32_fini(&es->opaque);
 744                 pixman_region32_init(&es->opaque);
 745         }
 746
 747         if (!es->texture) {
 748                 glGenTextures(1, &es->texture);
 749                 glBindTexture(GL_TEXTURE_2D, es->texture);
 750                 glTexParameteri(GL_TEXTURE_2D,
 751                                 GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 752                 glTexParameteri(GL_TEXTURE_2D,
 753                                 GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 754                 es->shader = &ec->texture_shader;
 755         } else {
 756                 glBindTexture(GL_TEXTURE_2D, es->texture);
 757         }
 758
 759         if (wl_buffer_is_shm(buffer)) {
 760                 es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
 761                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 762                              es->pitch, es->buffer->height, 0,
 763                              GL_BGRA_EXT, GL_UNSIGNED_BYTE, NULL);
 764                 if (wl_shm_buffer_get_format(buffer) == WL_SHM_FORMAT_XRGB8888)
 765                         es->blend = 0;
 766                 else
 767                         es->blend = 1;
 768         } else {
 769                 if (es->image != EGL_NO_IMAGE_KHR)
 770                         ec->destroy_image(ec->display, es->image);
 771                 es->image = ec->create_image(ec->display, NULL,
 772                                              EGL_WAYLAND_BUFFER_WL,
 773                                              buffer, NULL);
 774
 775                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 776
 777                 es->pitch = buffer->width;
 778         }
 779 }
 780
 781 static int
 782 texture_region(struct weston_surface *es, pixman_region32_t *region)
 783 {
 784         struct weston_compositor *ec = es->compositor;
 785         GLfloat *v, inv_width, inv_height;
 786         GLfloat sx, sy;
 787         pixman_box32_t *rectangles;
 788         unsigned int *p;
 789         int i, n;
 790
 791         rectangles = pixman_region32_rectangles(region, &n);
 792         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 793         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 794         inv_width = 1.0 / es->pitch;
 795         inv_height = 1.0 / es->geometry.height;
 796
 797         for (i = 0; i < n; i++, v += 16, p += 6) {
 798                 surface_from_global_float(es, rectangles[i].x1,
 799                                           rectangles[i].y1, &sx, &sy);
 800                 v[ 0] = rectangles[i].x1;
 801                 v[ 1] = rectangles[i].y1;
 802                 v[ 2] = sx * inv_width;
 803                 v[ 3] = sy * inv_height;
 804
 805                 surface_from_global_float(es, rectangles[i].x1,
 806                                           rectangles[i].y2, &sx, &sy);
 807                 v[ 4] = rectangles[i].x1;
 808                 v[ 5] = rectangles[i].y2;
 809                 v[ 6] = sx * inv_width;
 810                 v[ 7] = sy * inv_height;
 811
 812                 surface_from_global_float(es, rectangles[i].x2,
 813                                           rectangles[i].y1, &sx, &sy);
 814                 v[ 8] = rectangles[i].x2;
 815                 v[ 9] = rectangles[i].y1;
 816                 v[10] = sx * inv_width;
 817                 v[11] = sy * inv_height;
 818
 819                 surface_from_global_float(es, rectangles[i].x2,
 820                                           rectangles[i].y2, &sx, &sy);
 821                 v[12] = rectangles[i].x2;
 822                 v[13] = rectangles[i].y2;
 823                 v[14] = sx * inv_width;
 824                 v[15] = sy * inv_height;
 825
 826                 p[0] = i * 4 + 0;
 827                 p[1] = i * 4 + 1;
 828                 p[2] = i * 4 + 2;
 829                 p[3] = i * 4 + 2;
 830                 p[4] = i * 4 + 1;
 831                 p[5] = i * 4 + 3;
 832         }
 833
 834         return n;
 835 }
 836
 837 WL_EXPORT void
 838 weston_surface_draw(struct weston_surface *es, struct weston_output *output,
 839                     pixman_region32_t *damage)
 840 {
 841         GLfloat surface_rect[4] = { 0.0, 1.0, 0.0, 1.0 };
 842         struct weston_compositor *ec = es->compositor;
 843         GLfloat *v;
 844         pixman_region32_t repaint;
 845         GLint filter;
 846         int n;
 847
 848         pixman_region32_init(&repaint);
 849         pixman_region32_intersect(&repaint,
 850                                   &es->transform.boundingbox, damage);
 851         pixman_region32_subtract(&repaint, &repaint, &es->clip);
 852
 853         if (!pixman_region32_not_empty(&repaint))
 854                 goto out;
 855
 856         glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 857         if (es->blend || es->alpha < 1.0)
 858                 glEnable(GL_BLEND);
 859         else
 860                 glDisable(GL_BLEND);
 861
 862         if (ec->current_shader != es->shader) {
 863                 glUseProgram(es->shader->program);
 864                 ec->current_shader = es->shader;
 865         }
 866
 867         glUniformMatrix4fv(es->shader->proj_uniform,
 868                            1, GL_FALSE, output->matrix.d);
 869         glUniform1i(es->shader->tex_uniform, 0);
 870         glUniform4fv(es->shader->color_uniform, 1, es->color);
 871         glUniform1f(es->shader->alpha_uniform, es->alpha);
 872         glUniform1f(es->shader->brightness_uniform, es->brightness);
 873         glUniform1f(es->shader->saturation_uniform, es->saturation);
 874         glUniform1f(es->shader->texwidth_uniform,
 875                     (GLfloat)es->geometry.width / es->pitch);
 876         if (es->blend)
 877                 glUniform4fv(es->shader->opaque_uniform, 1, es->opaque_rect);
 878         else
 879                 glUniform4fv(es->shader->opaque_uniform, 1, surface_rect);
 880
 881         if (es->transform.enabled || output->zoom.active)
 882                 filter = GL_LINEAR;
 883         else
 884                 filter = GL_NEAREST;
 885
 886         n = texture_region(es, &repaint);
 887
 888         glBindTexture(GL_TEXTURE_2D, es->texture);
 889         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
 890         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
 891
 892         v = ec->vertices.data;
 893         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 894         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 895         glEnableVertexAttribArray(0);
 896         glEnableVertexAttribArray(1);
 897
 898         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 899
 900         glDisableVertexAttribArray(1);
 901         glDisableVertexAttribArray(0);
 902
 903         ec->vertices.size = 0;
 904         ec->indices.size = 0;
 905
 906 out:
 907         pixman_region32_fini(&repaint);
 908 }
 909
 910 WL_EXPORT void
 911 weston_surface_restack(struct weston_surface *surface, struct wl_list *below)
 912 {
 913         wl_list_remove(&surface->layer_link);
 914         wl_list_insert(below, &surface->layer_link);
 915         weston_surface_damage_below(surface);
 916         weston_surface_damage(surface);
 917 }
 918
 919 WL_EXPORT void
 920 weston_compositor_damage_all(struct weston_compositor *compositor)
 921 {
 922         struct weston_output *output;
 923
 924         wl_list_for_each(output, &compositor->output_list, link)
 925                 weston_output_damage(output);
 926 }
 927
 928 WL_EXPORT void
 929 weston_buffer_post_release(struct wl_buffer *buffer)
 930 {
 931         if (--buffer->busy_count > 0)
 932                 return;
 933
 934         assert(buffer->resource.client != NULL);
 935         wl_resource_queue_event(&buffer->resource, WL_BUFFER_RELEASE);
 936 }
 937
 938 WL_EXPORT void
 939 weston_output_damage(struct weston_output *output)
 940 {
 941         struct weston_compositor *compositor = output->compositor;
 942
 943         pixman_region32_union(&compositor->damage,
 944                               &compositor->damage, &output->region);
 945         weston_compositor_schedule_repaint(compositor);
 946 }
 947
 948 static void
 949 fade_frame(struct weston_animation *animation,
 950            struct weston_output *output, uint32_t msecs)
 951 {
 952         struct weston_compositor *compositor =
 953                 container_of(animation,
 954                              struct weston_compositor, fade.animation);
 955         struct weston_surface *surface;
 956
 957         surface = compositor->fade.surface;
 958         weston_spring_update(&compositor->fade.spring, msecs);
 959         weston_surface_set_color(surface, 0.0, 0.0, 0.0,
 960                                  compositor->fade.spring.current);
 961         weston_surface_damage(surface);
 962
 963         if (weston_spring_done(&compositor->fade.spring)) {
 964                 compositor->fade.spring.current =
 965                         compositor->fade.spring.target;
 966                 wl_list_remove(&animation->link);
 967                 wl_list_init(&animation->link);
 968
 969                 if (compositor->fade.spring.current < 0.001) {
 970                         destroy_surface(&surface->surface.resource);
 971                         compositor->fade.surface = NULL;
 972                 } else if (compositor->fade.spring.current > 0.999) {
 973                         compositor->state = WESTON_COMPOSITOR_SLEEPING;
 974                         wl_signal_emit(&compositor->lock_signal, compositor);
 975                 }
 976         }
 977 }
 978
 979 struct weston_frame_callback {
 980         struct wl_resource resource;
 981         struct wl_list link;
 982 };
 983
 984 static void
 985 weston_output_repaint(struct weston_output *output, int msecs)
 986 {
 987         struct weston_compositor *ec = output->compositor;
 988         struct weston_surface *es;
 989         struct weston_layer *layer;
 990         struct weston_animation *animation, *next;
 991         struct weston_frame_callback *cb, *cnext;
 992         pixman_region32_t opaque, new_damage, output_damage;
 993         int32_t width, height;
 994
 995         weston_compositor_update_drag_surfaces(ec);
 996
 997         width = output->current->width +
 998                 output->border.left + output->border.right;
 999         height = output->current->height +
1000                 output->border.top + output->border.bottom;
1001         glViewport(0, 0, width, height);
1002
1003         /* Rebuild the surface list and update surface transforms up front. */
1004         wl_list_init(&ec->surface_list);
1005         wl_list_for_each(layer, &ec->layer_list, link) {
1006                 wl_list_for_each(es, &layer->surface_list, layer_link) {
1007                         weston_surface_update_transform(es);
1008                         wl_list_insert(ec->surface_list.prev, &es->link);
1009                 }
1010         }
1011
1012         if (output->assign_planes)
1013                 /*
1014                  * This will queue flips for the fbs and sprites where
1015                  * applicable and clear the damage for those surfaces.
1016                  * The repaint loop below will repaint everything
1017                  * else.
1018                  */
1019                 output->assign_planes(output);
1020
1021         pixman_region32_init(&new_damage);
1022         pixman_region32_init(&opaque);
1023
1024         wl_list_for_each(es, &ec->surface_list, link) {
1025                 pixman_region32_subtract(&es->damage, &es->damage, &opaque);
1026                 pixman_region32_union(&new_damage, &new_damage, &es->damage);
1027                 empty_region(&es->damage);
1028                 pixman_region32_copy(&es->clip, &opaque);
1029                 pixman_region32_union(&opaque, &opaque, &es->transform.opaque);
1030         }
1031
1032         pixman_region32_union(&ec->damage, &ec->damage, &new_damage);
1033
1034         pixman_region32_init(&output_damage);
1035         pixman_region32_union(&output_damage,
1036                               &ec->damage, &output->previous_damage);
1037         pixman_region32_copy(&output->previous_damage, &ec->damage);
1038         pixman_region32_intersect(&output_damage,
1039                                   &output_damage, &output->region);
1040         pixman_region32_subtract(&ec->damage, &ec->damage, &output->region);
1041
1042         pixman_region32_fini(&opaque);
1043         pixman_region32_fini(&new_damage);
1044
1045         if (output->dirty)
1046                 weston_output_update_matrix(output);
1047
1048         output->repaint(output, &output_damage);
1049
1050         pixman_region32_fini(&output_damage);
1051
1052         output->repaint_needed = 0;
1053
1054         weston_compositor_repick(ec);
1055         wl_event_loop_dispatch(ec->input_loop, 0);
1056
1057         wl_list_for_each_safe(cb, cnext, &output->frame_callback_list, link) {
1058                 wl_callback_send_done(&cb->resource, msecs);
1059                 wl_resource_destroy(&cb->resource);
1060         }
1061
1062         wl_list_for_each_safe(animation, next, &ec->animation_list, link)
1063                 animation->frame(animation, output, msecs);
1064 }
1065
1066 static int
1067 weston_compositor_read_input(int fd, uint32_t mask, void *data)
1068 {
1069         struct weston_compositor *compositor = data;
1070
1071         wl_event_loop_dispatch(compositor->input_loop, 0);
1072
1073         return 1;
1074 }
1075
1076 WL_EXPORT void
1077 weston_output_finish_frame(struct weston_output *output, int msecs)
1078 {
1079         struct weston_compositor *compositor = output->compositor;
1080         struct wl_event_loop *loop =
1081                 wl_display_get_event_loop(compositor->wl_display);
1082         int fd;
1083
1084         wl_signal_emit(&output->frame_signal, &msecs);
1085
1086         if (output->repaint_needed) {
1087                 weston_output_repaint(output, msecs);
1088                 return;
1089         }
1090
1091         output->repaint_scheduled = 0;
1092         if (compositor->input_loop_source)
1093                 return;
1094
1095         fd = wl_event_loop_get_fd(compositor->input_loop);
1096         compositor->input_loop_source =
1097                 wl_event_loop_add_fd(loop, fd, WL_EVENT_READABLE,
1098                                      weston_compositor_read_input, compositor);
1099 }
1100
1101 static void
1102 idle_repaint(void *data)
1103 {
1104         struct weston_output *output = data;
1105
1106         weston_output_finish_frame(output, weston_compositor_get_time());
1107 }
1108
1109 WL_EXPORT void
1110 weston_layer_init(struct weston_layer *layer, struct wl_list *below)
1111 {
1112         wl_list_init(&layer->surface_list);
1113         wl_list_insert(below, &layer->link);
1114 }
1115
1116 WL_EXPORT void
1117 weston_compositor_schedule_repaint(struct weston_compositor *compositor)
1118 {
1119         struct weston_output *output;
1120         struct wl_event_loop *loop;
1121
1122         if (compositor->state == WESTON_COMPOSITOR_SLEEPING)
1123                 return;
1124
1125         loop = wl_display_get_event_loop(compositor->wl_display);
1126         wl_list_for_each(output, &compositor->output_list, link) {
1127                 output->repaint_needed = 1;
1128                 if (output->repaint_scheduled)
1129                         continue;
1130
1131                 wl_event_loop_add_idle(loop, idle_repaint, output);
1132                 output->repaint_scheduled = 1;
1133         }
1134
1135         if (compositor->input_loop_source) {
1136                 wl_event_source_remove(compositor->input_loop_source);
1137                 compositor->input_loop_source = NULL;
1138         }
1139 }
1140
1141 WL_EXPORT void
1142 weston_compositor_fade(struct weston_compositor *compositor, float tint)
1143 {
1144         struct weston_surface *surface;
1145         int done;
1146
1147         done = weston_spring_done(&compositor->fade.spring);
1148         compositor->fade.spring.target = tint;
1149         if (weston_spring_done(&compositor->fade.spring))
1150                 return;
1151
1152         if (done)
1153                 compositor->fade.spring.timestamp =
1154                         weston_compositor_get_time();
1155
1156         if (compositor->fade.surface == NULL) {
1157                 surface = weston_surface_create(compositor);
1158                 weston_surface_configure(surface, 0, 0, 8192, 8192);
1159                 weston_surface_set_color(surface, 0.0, 0.0, 0.0, 0.0);
1160                 wl_list_insert(&compositor->fade_layer.surface_list,
1161                                &surface->layer_link);
1162                 weston_surface_assign_output(surface);
1163                 compositor->fade.surface = surface;
1164                 pixman_region32_init(&surface->input);
1165         }
1166
1167         weston_surface_damage(compositor->fade.surface);
1168         if (wl_list_empty(&compositor->fade.animation.link))
1169                 wl_list_insert(compositor->animation_list.prev,
1170                                &compositor->fade.animation.link);
1171 }
1172
1173 static void
1174 surface_destroy(struct wl_client *client, struct wl_resource *resource)
1175 {
1176         wl_resource_destroy(resource);
1177 }
1178
1179 static struct wl_resource *
1180 find_resource_for_client(struct wl_list *list, struct wl_client *client)
1181 {
1182         struct wl_resource *r;
1183
1184         wl_list_for_each(r, list, link) {
1185                 if (r->client == client)
1186                         return r;
1187         }
1188
1189         return NULL;
1190 }
1191
1192 static void
1193 weston_surface_update_output_mask(struct weston_surface *es, uint32_t mask)
1194 {
1195         uint32_t different = es->output_mask ^ mask;
1196         uint32_t entered = mask & different;
1197         uint32_t left = es->output_mask & different;
1198         struct weston_output *output;
1199         struct wl_resource *resource = NULL;
1200         struct wl_client *client = es->surface.resource.client;
1201
1202         if (es->surface.resource.client == NULL)
1203                 return;
1204         if (different == 0)
1205                 return;
1206
1207         es->output_mask = mask;
1208         wl_list_for_each(output, &es->compositor->output_list, link) {
1209                 if (1 << output->id & different)
1210                         resource =
1211                                 find_resource_for_client(&output->resource_list,
1212                                                          client);
1213                 if (1 << output->id & entered)
1214                         wl_surface_send_enter(&es->surface.resource, resource);
1215                 if (1 << output->id & left)
1216                         wl_surface_send_leave(&es->surface.resource, resource);
1217         }
1218 }
1219
1220 WL_EXPORT void
1221 weston_surface_assign_output(struct weston_surface *es)
1222 {
1223         struct weston_compositor *ec = es->compositor;
1224         struct weston_output *output, *new_output;
1225         pixman_region32_t region;
1226         uint32_t max, area, mask;
1227         pixman_box32_t *e;
1228
1229         new_output = NULL;
1230         max = 0;
1231         mask = 0;
1232         pixman_region32_init(&region);
1233         wl_list_for_each(output, &ec->output_list, link) {
1234                 pixman_region32_intersect(&region, &es->transform.boundingbox,
1235                                           &output->region);
1236
1237                 e = pixman_region32_extents(&region);
1238                 area = (e->x2 - e->x1) * (e->y2 - e->y1);
1239
1240                 if (area > 0)
1241                         mask |= 1 << output->id;
1242
1243                 if (area >= max) {
1244                         new_output = output;
1245                         max = area;
1246                 }
1247         }
1248         pixman_region32_fini(&region);
1249
1250         es->output = new_output;
1251         weston_surface_update_output_mask(es, mask);
1252
1253         if (!wl_list_empty(&es->frame_callback_list)) {
1254                 wl_list_insert_list(new_output->frame_callback_list.prev,
1255                                     &es->frame_callback_list);
1256                 wl_list_init(&es->frame_callback_list);
1257         }
1258 }
1259
1260 static void
1261 surface_attach(struct wl_client *client,
1262                struct wl_resource *resource,
1263                struct wl_resource *buffer_resource, int32_t sx, int32_t sy)
1264 {
1265         struct weston_surface *es = resource->data;
1266         struct wl_buffer *buffer = NULL;
1267
1268         if (buffer_resource)
1269                 buffer = buffer_resource->data;
1270
1271         weston_surface_attach(&es->surface, buffer);
1272
1273         if (buffer && es->configure)
1274                 es->configure(es, sx, sy);
1275 }
1276
1277 static void
1278 texture_set_subimage(struct weston_surface *surface,
1279                      int32_t x, int32_t y, int32_t width, int32_t height)
1280 {
1281         glBindTexture(GL_TEXTURE_2D, surface->texture);
1282
1283 #ifdef GL_UNPACK_ROW_LENGTH
1284         /* Mesa does not define GL_EXT_unpack_subimage */
1285
1286         if (surface->compositor->has_unpack_subimage) {
1287                 glPixelStorei(GL_UNPACK_ROW_LENGTH, surface->pitch);
1288                 glPixelStorei(GL_UNPACK_SKIP_PIXELS, x);
1289                 glPixelStorei(GL_UNPACK_SKIP_ROWS, y);
1290
1291                 glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height,
1292                                 GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1293                                 wl_shm_buffer_get_data(surface->buffer));
1294                 return;
1295         }
1296 #endif
1297
1298         glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1299                      surface->pitch, surface->buffer->height, 0,
1300                      GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1301                      wl_shm_buffer_get_data(surface->buffer));
1302 }
1303
1304 static void
1305 surface_damage(struct wl_client *client,
1306                struct wl_resource *resource,
1307                int32_t x, int32_t y, int32_t width, int32_t height)
1308 {
1309         struct weston_surface *es = resource->data;
1310
1311         weston_surface_damage_rectangle(es, x, y, width, height);
1312
1313         if (es->buffer && wl_buffer_is_shm(es->buffer))
1314                 texture_set_subimage(es, x, y, width, height);
1315 }
1316
1317 static void
1318 destroy_frame_callback(struct wl_resource *resource)
1319 {
1320         struct weston_frame_callback *cb = resource->data;
1321
1322         wl_list_remove(&cb->link);
1323         free(cb);
1324 }
1325
1326 static void
1327 surface_frame(struct wl_client *client,
1328               struct wl_resource *resource, uint32_t callback)
1329 {
1330         struct weston_frame_callback *cb;
1331         struct weston_surface *es = resource->data;
1332
1333         cb = malloc(sizeof *cb);
1334         if (cb == NULL) {
1335                 wl_resource_post_no_memory(resource);
1336                 return;
1337         }
1338
1339         cb->resource.object.interface = &wl_callback_interface;
1340         cb->resource.object.id = callback;
1341         cb->resource.destroy = destroy_frame_callback;
1342         cb->resource.client = client;
1343         cb->resource.data = cb;
1344
1345         wl_client_add_resource(client, &cb->resource);
1346
1347         if (es->output) {
1348                 wl_list_insert(es->output->frame_callback_list.prev,
1349                                &cb->link);
1350         } else {
1351                 wl_list_insert(es->frame_callback_list.prev, &cb->link);
1352         }
1353 }
1354
1355 static void
1356 surface_set_opaque_region(struct wl_client *client,
1357                           struct wl_resource *resource,
1358                           struct wl_resource *region_resource)
1359 {
1360         struct weston_surface *surface = resource->data;
1361         struct weston_region *region;
1362
1363         pixman_region32_fini(&surface->opaque);
1364
1365         if (region_resource) {
1366                 region = region_resource->data;
1367                 pixman_region32_init_rect(&surface->opaque, 0, 0,
1368                                           surface->geometry.width,
1369                                           surface->geometry.height);
1370                 pixman_region32_intersect(&surface->opaque,
1371                                           &surface->opaque, &region->region);
1372         } else {
1373                 pixman_region32_init(&surface->opaque);
1374         }
1375
1376         surface->geometry.dirty = 1;
1377 }
1378
1379 static void
1380 surface_set_input_region(struct wl_client *client,
1381                          struct wl_resource *resource,
1382                          struct wl_resource *region_resource)
1383 {
1384         struct weston_surface *surface = resource->data;
1385         struct weston_region *region;
1386
1387         if (region_resource) {
1388                 region = region_resource->data;
1389                 pixman_region32_init_rect(&surface->input, 0, 0,
1390                                           surface->geometry.width,
1391                                           surface->geometry.height);
1392                 pixman_region32_intersect(&surface->input,
1393                                           &surface->input, &region->region);
1394         } else {
1395                 pixman_region32_init_rect(&surface->input, 0, 0,
1396                                           surface->geometry.width,
1397                                           surface->geometry.height);
1398         }
1399
1400         weston_compositor_schedule_repaint(surface->compositor);
1401 }
1402
1403 static const struct wl_surface_interface surface_interface = {
1404         surface_destroy,
1405         surface_attach,
1406         surface_damage,
1407         surface_frame,
1408         surface_set_opaque_region,
1409         surface_set_input_region
1410 };
1411
1412 static void
1413 compositor_create_surface(struct wl_client *client,
1414                           struct wl_resource *resource, uint32_t id)
1415 {
1416         struct weston_compositor *ec = resource->data;
1417         struct weston_surface *surface;
1418
1419         surface = weston_surface_create(ec);
1420         if (surface == NULL) {
1421                 wl_resource_post_no_memory(resource);
1422                 return;
1423         }
1424
1425         surface->surface.resource.destroy = destroy_surface;
1426
1427         surface->surface.resource.object.id = id;
1428         surface->surface.resource.object.interface = &wl_surface_interface;
1429         surface->surface.resource.object.implementation =
1430                 (void (**)(void)) &surface_interface;
1431         surface->surface.resource.data = surface;
1432
1433         wl_client_add_resource(client, &surface->surface.resource);
1434 }
1435
1436 static void
1437 destroy_region(struct wl_resource *resource)
1438 {
1439         struct weston_region *region =
1440                 container_of(resource, struct weston_region, resource);
1441
1442         pixman_region32_fini(&region->region);
1443         free(region);
1444 }
1445
1446 static void
1447 region_destroy(struct wl_client *client, struct wl_resource *resource)
1448 {
1449         wl_resource_destroy(resource);
1450 }
1451
1452 static void
1453 region_add(struct wl_client *client, struct wl_resource *resource,
1454            int32_t x, int32_t y, int32_t width, int32_t height)
1455 {
1456         struct weston_region *region = resource->data;
1457
1458         pixman_region32_union_rect(&region->region, &region->region,
1459                                    x, y, width, height);
1460 }
1461
1462 static void
1463 region_subtract(struct wl_client *client, struct wl_resource *resource,
1464                 int32_t x, int32_t y, int32_t width, int32_t height)
1465 {
1466         struct weston_region *region = resource->data;
1467         pixman_region32_t rect;
1468
1469         pixman_region32_init_rect(&rect, x, y, width, height);
1470         pixman_region32_subtract(&region->region, &region->region, &rect);
1471         pixman_region32_fini(&rect);
1472 }
1473
1474 static const struct wl_region_interface region_interface = {
1475         region_destroy,
1476         region_add,
1477         region_subtract
1478 };
1479
1480 static void
1481 compositor_create_region(struct wl_client *client,
1482                          struct wl_resource *resource, uint32_t id)
1483 {
1484         struct weston_region *region;
1485
1486         region = malloc(sizeof *region);
1487         if (region == NULL) {
1488                 wl_resource_post_no_memory(resource);
1489                 return;
1490         }
1491
1492         region->resource.destroy = destroy_region;
1493
1494         region->resource.object.id = id;
1495         region->resource.object.interface = &wl_region_interface;
1496         region->resource.object.implementation =
1497                 (void (**)(void)) &region_interface;
1498         region->resource.data = region;
1499
1500         pixman_region32_init(&region->region);
1501
1502         wl_client_add_resource(client, &region->resource);
1503 }
1504
1505 static const struct wl_compositor_interface compositor_interface = {
1506         compositor_create_surface,
1507         compositor_create_region
1508 };
1509
1510 WL_EXPORT void
1511 weston_compositor_wake(struct weston_compositor *compositor)
1512 {
1513         compositor->state = WESTON_COMPOSITOR_ACTIVE;
1514         weston_compositor_fade(compositor, 0.0);
1515
1516         wl_event_source_timer_update(compositor->idle_source,
1517                                      compositor->idle_time * 1000);
1518 }
1519
1520 static void
1521 weston_compositor_dpms_on(struct weston_compositor *compositor)
1522 {
1523         struct weston_output *output;
1524
1525         wl_list_for_each(output, &compositor->output_list, link)
1526                 if (output->set_dpms)
1527                         output->set_dpms(output, WESTON_DPMS_ON);
1528 }
1529
1530 WL_EXPORT void
1531 weston_compositor_activity(struct weston_compositor *compositor)
1532 {
1533         if (compositor->state == WESTON_COMPOSITOR_ACTIVE) {
1534                 weston_compositor_wake(compositor);
1535         } else {
1536                 weston_compositor_dpms_on(compositor);
1537                 wl_signal_emit(&compositor->unlock_signal, compositor);
1538         }
1539 }
1540
1541 static void
1542 weston_compositor_idle_inhibit(struct weston_compositor *compositor)
1543 {
1544         weston_compositor_activity(compositor);
1545         compositor->idle_inhibit++;
1546 }
1547
1548 static void
1549 weston_compositor_idle_release(struct weston_compositor *compositor)
1550 {
1551         compositor->idle_inhibit--;
1552         weston_compositor_activity(compositor);
1553 }
1554
1555 static int
1556 idle_handler(void *data)
1557 {
1558         struct weston_compositor *compositor = data;
1559
1560         if (compositor->idle_inhibit)
1561                 return 1;
1562
1563         weston_compositor_fade(compositor, 1.0);
1564
1565         return 1;
1566 }
1567
1568 static  void
1569 weston_seat_update_drag_surface(struct wl_seat *seat, int dx, int dy);
1570
1571 static void
1572 clip_pointer_motion(struct weston_seat *seat, wl_fixed_t *fx, wl_fixed_t *fy)
1573 {
1574         struct weston_compositor *ec = seat->compositor;
1575         struct weston_output *output, *prev = NULL;
1576         int x, y, old_x, old_y, valid = 0;
1577
1578         x = wl_fixed_to_int(*fx);
1579         y = wl_fixed_to_int(*fy);
1580         old_x = wl_fixed_to_int(seat->seat.pointer->x);
1581         old_y = wl_fixed_to_int(seat->seat.pointer->y);
1582
1583         wl_list_for_each(output, &ec->output_list, link) {
1584                 if (pixman_region32_contains_point(&output->region,
1585                                                    x, y, NULL))
1586                         valid = 1;
1587                 if (pixman_region32_contains_point(&output->region,
1588                                                    old_x, old_y, NULL))
1589                         prev = output;
1590         }
1591
1592         if (!valid) {
1593                 if (x < prev->x)
1594                         *fx = wl_fixed_from_int(prev->x);
1595                 else if (x >= prev->x + prev->current->width)
1596                         *fx = wl_fixed_from_int(prev->x +
1597                                                 prev->current->width - 1);
1598                 if (y < prev->y)
1599                         *fy = wl_fixed_from_int(prev->y);
1600                 else if (y >= prev->y + prev->current->height)
1601                         *fy = wl_fixed_from_int(prev->y +
1602                                                 prev->current->height - 1);
1603         }
1604 }
1605
1606 WL_EXPORT void
1607 notify_motion(struct wl_seat *seat, uint32_t time, wl_fixed_t x, wl_fixed_t y)
1608 {
1609         const struct wl_pointer_grab_interface *interface;
1610         struct weston_seat *ws = (struct weston_seat *) seat;
1611         struct weston_compositor *ec = ws->compositor;
1612         struct weston_output *output;
1613         int32_t ix, iy;
1614
1615         weston_compositor_activity(ec);
1616
1617         clip_pointer_motion(ws, &x, &y);
1618
1619         weston_seat_update_drag_surface(seat,
1620                                         x - seat->pointer->x,
1621                                         y - seat->pointer->y);
1622
1623         seat->pointer->x = x;
1624         seat->pointer->y = y;
1625
1626         ix = wl_fixed_to_int(x);
1627         iy = wl_fixed_to_int(y);
1628
1629         wl_list_for_each(output, &ec->output_list, link)
1630                 if (output->zoom.active &&
1631                     pixman_region32_contains_point(&output->region,
1632                                                    ix, iy, NULL))
1633                         weston_output_update_zoom(output, x, y, ZOOM_POINTER);
1634
1635         weston_device_repick(seat);
1636         interface = seat->pointer->grab->interface;
1637         interface->motion(seat->pointer->grab, time,
1638                           seat->pointer->grab->x, seat->pointer->grab->y);
1639
1640         if (ws->sprite) {
1641                 weston_surface_set_position(ws->sprite,
1642                                             ix - ws->hotspot_x,
1643                                             iy - ws->hotspot_y);
1644                 weston_compositor_schedule_repaint(ec);
1645         }
1646 }
1647
1648 WL_EXPORT void
1649 weston_surface_activate(struct weston_surface *surface,
1650                         struct weston_seat *seat)
1651 {
1652         struct weston_compositor *compositor = seat->compositor;
1653
1654         wl_keyboard_set_focus(seat->seat.keyboard, &surface->surface);
1655         wl_data_device_set_keyboard_focus(&seat->seat);
1656
1657         if (seat->seat.keyboard->focus_resource) {
1658                 wl_keyboard_send_modifiers(seat->seat.keyboard->focus_resource,
1659                                            wl_display_next_serial(compositor->wl_display),
1660                                            seat->xkb_state.mods_depressed,
1661                                            seat->xkb_state.mods_latched,
1662                                            seat->xkb_state.mods_locked,
1663                                            seat->xkb_state.group);
1664         }
1665
1666         wl_signal_emit(&compositor->activate_signal, surface);
1667 }
1668
1669 WL_EXPORT void
1670 notify_button(struct wl_seat *seat, uint32_t time, int32_t button,
1671               uint32_t state)
1672 {
1673         struct weston_seat *ws = (struct weston_seat *) seat;
1674         struct weston_compositor *compositor = ws->compositor;
1675         struct weston_surface *focus =
1676                 (struct weston_surface *) seat->pointer->focus;
1677         uint32_t serial = wl_display_next_serial(compositor->wl_display);
1678
1679         if (state) {
1680                 if (compositor->ping_handler && focus)
1681                         compositor->ping_handler(focus, serial);
1682                 weston_compositor_idle_inhibit(compositor);
1683                 if (seat->pointer->button_count == 0) {
1684                         seat->pointer->grab_button = button;
1685                         seat->pointer->grab_time = time;
1686                         seat->pointer->grab_x = seat->pointer->x;
1687                         seat->pointer->grab_y = seat->pointer->y;
1688                 }
1689                 seat->pointer->button_count++;
1690         } else {
1691                 weston_compositor_idle_release(compositor);
1692                 seat->pointer->button_count--;
1693         }
1694
1695         weston_compositor_run_binding(compositor, ws, time, 0, button, 0,
1696                                       state);
1697
1698         seat->pointer->grab->interface->button(seat->pointer->grab, time,
1699                                                button, state);
1700
1701         if (seat->pointer->button_count == 1)
1702                 seat->pointer->grab_serial =
1703                         wl_display_get_serial(compositor->wl_display);
1704 }
1705
1706 WL_EXPORT void
1707 notify_axis(struct wl_seat *seat, uint32_t time, uint32_t axis, int32_t value)
1708 {
1709         struct weston_seat *ws = (struct weston_seat *) seat;
1710         struct weston_compositor *compositor = ws->compositor;
1711         struct weston_surface *focus =
1712                 (struct weston_surface *) seat->pointer->focus;
1713         uint32_t serial = wl_display_next_serial(compositor->wl_display);
1714
1715         if (compositor->ping_handler && focus)
1716                 compositor->ping_handler(focus, serial);
1717
1718         weston_compositor_activity(compositor);
1719
1720         if (value)
1721                 weston_compositor_run_binding(compositor, ws,
1722                                               time, 0, 0, axis, value);
1723         else
1724                 return;
1725
1726         if (seat->pointer->focus_resource)
1727                 wl_resource_post_event(seat->pointer->focus_resource,
1728                                        WL_POINTER_AXIS, time, axis, value);
1729 }
1730
1731 static int
1732 update_modifier_state(struct weston_seat *seat, uint32_t key, uint32_t state)
1733 {
1734         uint32_t mods_depressed, mods_latched, mods_locked, group;
1735         uint32_t mods_lookup;
1736         int ret = 0;
1737
1738         /* First update the XKB state object with the keypress. */
1739         xkb_state_update_key(seat->xkb_state.state, key + 8,
1740                              state ? XKB_KEY_DOWN : XKB_KEY_UP);
1741
1742         /* Serialize and update our internal state, checking to see if it's
1743          * different to the previous state. */
1744         mods_depressed = xkb_state_serialize_mods(seat->xkb_state.state,
1745                                                   XKB_STATE_DEPRESSED);
1746         mods_latched = xkb_state_serialize_mods(seat->xkb_state.state,
1747                                                 XKB_STATE_LATCHED);
1748         mods_locked = xkb_state_serialize_mods(seat->xkb_state.state,
1749                                                XKB_STATE_LOCKED);
1750         group = xkb_state_serialize_group(seat->xkb_state.state,
1751                                           XKB_STATE_EFFECTIVE);
1752
1753         if (mods_depressed != seat->xkb_state.mods_depressed ||
1754             mods_latched != seat->xkb_state.mods_latched ||
1755             mods_locked != seat->xkb_state.mods_locked ||
1756             group != seat->xkb_state.group)
1757                 ret = 1;
1758
1759         seat->xkb_state.mods_depressed = mods_depressed;
1760         seat->xkb_state.mods_latched = mods_latched;
1761         seat->xkb_state.mods_locked = mods_locked;
1762         seat->xkb_state.group = group;
1763
1764         /* And update the modifier_state for bindings. */
1765         mods_lookup = mods_depressed | mods_latched;
1766         seat->modifier_state = 0;
1767         if ((mods_lookup & seat->compositor->xkb_info.ctrl_mod))
1768                 seat->modifier_state |= MODIFIER_CTRL;
1769         if ((mods_lookup & seat->compositor->xkb_info.alt_mod))
1770                 seat->modifier_state |= MODIFIER_ALT;
1771         if ((mods_lookup & seat->compositor->xkb_info.super_mod))
1772                 seat->modifier_state |= MODIFIER_SUPER;
1773
1774         return ret;
1775 }
1776
1777 WL_EXPORT void
1778 notify_key(struct wl_seat *seat, uint32_t time, uint32_t key, uint32_t state)
1779 {
1780         struct weston_seat *ws = (struct weston_seat *) seat;
1781         struct weston_compositor *compositor = ws->compositor;
1782         struct weston_surface *focus =
1783                 (struct weston_surface *) seat->pointer->focus;
1784         struct wl_keyboard_grab *grab = seat->keyboard->grab;
1785         uint32_t serial = wl_display_next_serial(compositor->wl_display);
1786         uint32_t *k, *end;
1787         int mods;
1788
1789         if (state) {
1790                 if (compositor->ping_handler && focus)
1791                         compositor->ping_handler(focus, serial);
1792
1793                 weston_compositor_idle_inhibit(compositor);
1794                 seat->keyboard->grab_key = key;
1795                 seat->keyboard->grab_time = time;
1796         } else {
1797                 weston_compositor_idle_release(compositor);
1798         }
1799
1800         mods = update_modifier_state(ws, key, state);
1801         end = seat->keyboard->keys.data + seat->keyboard->keys.size;
1802         for (k = seat->keyboard->keys.data; k < end; k++) {
1803                 if (*k == key)
1804                         *k = *--end;
1805         }
1806         seat->keyboard->keys.size = (void *) end - seat->keyboard->keys.data;
1807         if (state) {
1808                 k = wl_array_add(&seat->keyboard->keys, sizeof *k);
1809                 *k = key;
1810         }
1811
1812         if (grab == &seat->keyboard->default_grab)
1813                 weston_compositor_run_binding(compositor, ws,
1814                                               time, key, 0, 0, state);
1815
1816         grab->interface->key(grab, time, key, state);
1817         if (mods)
1818                 grab->interface->modifiers(grab,
1819                                            wl_display_get_serial(compositor->wl_display),
1820                                            ws->xkb_state.mods_depressed,
1821                                            ws->xkb_state.mods_latched,
1822                                            ws->xkb_state.mods_locked,
1823                                            ws->xkb_state.group);
1824 }
1825
1826 WL_EXPORT void
1827 notify_pointer_focus(struct wl_seat *seat, struct weston_output *output,
1828                      wl_fixed_t x, wl_fixed_t y)
1829 {
1830         struct weston_seat *ws = (struct weston_seat *) seat;
1831         struct weston_compositor *compositor = ws->compositor;
1832
1833         if (output) {
1834                 weston_seat_update_drag_surface(seat,
1835                                                 x - seat->pointer->x,
1836                                                 y - seat->pointer->y);
1837
1838                 seat->pointer->x = x;
1839                 seat->pointer->y = y;
1840                 compositor->focus = 1;
1841                 weston_compositor_repick(compositor);
1842         } else {
1843                 compositor->focus = 0;
1844                 weston_compositor_repick(compositor);
1845         }
1846 }
1847
1848 static void
1849 destroy_device_saved_kbd_focus(struct wl_listener *listener, void *data)
1850 {
1851         struct weston_seat *ws;
1852
1853         ws = container_of(listener, struct weston_seat,
1854                           saved_kbd_focus_listener);
1855
1856         ws->saved_kbd_focus = NULL;
1857 }
1858
1859 WL_EXPORT void
1860 notify_keyboard_focus(struct wl_seat *seat, struct wl_array *keys)
1861 {
1862         struct weston_seat *ws = (struct weston_seat *) seat;
1863         struct weston_compositor *compositor = ws->compositor;
1864         struct wl_surface *surface;
1865         uint32_t *k;
1866
1867         if (keys) {
1868                 wl_array_copy(&seat->keyboard->keys, keys);
1869                 ws->modifier_state = 0;
1870                 wl_array_for_each(k, &seat->keyboard->keys) {
1871                         weston_compositor_idle_inhibit(compositor);
1872                         update_modifier_state(ws, *k, 1);
1873                 }
1874
1875                 surface = ws->saved_kbd_focus;
1876
1877                 if (surface) {
1878                         wl_list_remove(&ws->saved_kbd_focus_listener.link);
1879                         wl_keyboard_set_focus(ws->seat.keyboard, surface);
1880
1881                         if (seat->keyboard->focus_resource) {
1882                                 wl_keyboard_send_modifiers(seat->keyboard->focus_resource,
1883                                                            wl_display_next_serial(compositor->wl_display),
1884                                                            ws->xkb_state.mods_depressed,
1885                                                            ws->xkb_state.mods_latched,
1886                                                            ws->xkb_state.mods_locked,
1887                                                            ws->xkb_state.group);
1888                         }
1889                         ws->saved_kbd_focus = NULL;
1890                 }
1891         } else {
1892                 wl_array_for_each(k, &seat->keyboard->keys)
1893                         weston_compositor_idle_release(compositor);
1894
1895                 ws->modifier_state = 0;
1896
1897                 surface = ws->seat.keyboard->focus;
1898
1899                 if (surface) {
1900                         ws->saved_kbd_focus = surface;
1901                         ws->saved_kbd_focus_listener.notify =
1902                                 destroy_device_saved_kbd_focus;
1903                         wl_signal_add(&surface->resource.destroy_signal,
1904                                       &ws->saved_kbd_focus_listener);
1905                 }
1906
1907                 wl_keyboard_set_focus(ws->seat.keyboard, NULL);
1908                 /* FIXME: We really need keyboard grab cancel here to
1909                  * let the grab shut down properly.  As it is we leak
1910                  * the grab data. */
1911                 wl_keyboard_end_grab(ws->seat.keyboard);
1912         }
1913 }
1914
1915 static void
1916 lose_touch_focus_resource(struct wl_listener *listener, void *data)
1917 {
1918         struct weston_seat *seat = container_of(listener, struct weston_seat,
1919                                                 touch_focus_resource_listener);
1920
1921         seat->touch_focus_resource = NULL;
1922 }
1923
1924 static void
1925 lose_touch_focus(struct wl_listener *listener, void *data)
1926 {
1927         struct weston_seat *seat = container_of(listener, struct weston_seat,
1928                                                 touch_focus_listener);
1929
1930         seat->touch_focus = NULL;
1931 }
1932
1933 static void
1934 touch_set_focus(struct weston_seat *ws, struct wl_surface *surface)
1935 {
1936         struct wl_seat *seat = &ws->seat;
1937         struct wl_resource *resource;
1938
1939         if (ws->touch_focus == surface)
1940                 return;
1941
1942         if (surface) {
1943                 resource =
1944                         find_resource_for_client(&seat->touch->resource_list,
1945                                                  surface->resource.client);
1946                 if (!resource) {
1947                         fprintf(stderr, "couldn't find resource\n");
1948                         return;
1949                 }
1950
1951                 ws->touch_focus_resource_listener.notify =
1952                         lose_touch_focus_resource;
1953                 wl_signal_add(&resource->destroy_signal,
1954                               &ws->touch_focus_resource_listener);
1955                 ws->touch_focus_listener.notify = lose_touch_focus;
1956                 wl_signal_add(&surface->resource.destroy_signal,
1957                                &ws->touch_focus_listener);
1958
1959                 seat->touch->focus = surface;
1960                 seat->touch->focus_resource = resource;
1961         } else {
1962                 if (seat->touch->focus)
1963                         wl_list_remove(&ws->touch_focus_listener.link);
1964                 if (seat->touch->focus_resource)
1965                         wl_list_remove(&ws->touch_focus_resource_listener.link);
1966                 seat->touch->focus = NULL;
1967                 seat->touch->focus_resource = NULL;
1968         }
1969 }
1970
1971 /**
1972  * notify_touch - emulates button touches and notifies surfaces accordingly.
1973  *
1974  * It assumes always the correct cycle sequence until it gets here: touch_down
1975  * → touch_update → ... → touch_update → touch_end. The driver is responsible
1976  * for sending along such order.
1977  *
1978  */
1979 WL_EXPORT void
1980 notify_touch(struct wl_seat *seat, uint32_t time, int touch_id,
1981              wl_fixed_t x, wl_fixed_t y, int touch_type)
1982 {
1983         struct weston_seat *ws = (struct weston_seat *) seat;
1984         struct weston_compositor *ec = ws->compositor;
1985         struct weston_surface *es;
1986         wl_fixed_t sx, sy;
1987         uint32_t serial = 0;
1988
1989         switch (touch_type) {
1990         case WL_TOUCH_DOWN:
1991                 weston_compositor_idle_inhibit(ec);
1992
1993                 ws->num_tp++;
1994
1995                 /* the first finger down picks the surface, and all further go
1996                  * to that surface for the remainder of the touch session i.e.
1997                  * until all touch points are up again. */
1998                 if (ws->num_tp == 1) {
1999                         es = weston_compositor_pick_surface(ec, x, y, &sx, &sy);
2000                         touch_set_focus(ws, &es->surface);
2001                 } else if (ws->touch_focus) {
2002                         es = (struct weston_surface *) ws->touch_focus;
2003                         weston_surface_from_global_fixed(es, x, y, &sx, &sy);
2004                 }
2005
2006                 if (ws->touch_focus_resource && ws->touch_focus)
2007                         wl_touch_send_down(ws->touch_focus_resource,
2008                                            serial, time,
2009                                            &ws->touch_focus->resource,
2010                                            touch_id, sx, sy);
2011                 break;
2012         case WL_TOUCH_MOTION:
2013                 es = (struct weston_surface *) ws->touch_focus;
2014                 if (!es)
2015                         break;
2016
2017                 weston_surface_from_global_fixed(es, x, y, &sx, &sy);
2018                 if (ws->touch_focus_resource)
2019                         wl_touch_send_motion(ws->touch_focus_resource,
2020                                              time, touch_id, sx, sy);
2021                 break;
2022         case WL_TOUCH_UP:
2023                 weston_compositor_idle_release(ec);
2024                 ws->num_tp--;
2025
2026                 if (ws->touch_focus_resource)
2027                         wl_touch_send_up(ws->touch_focus_resource,
2028                                          serial, time, touch_id);
2029                 if (ws->num_tp == 0)
2030                         touch_set_focus(ws, NULL);
2031                 break;
2032         }
2033 }
2034
2035 static void
2036 pointer_attach(struct wl_client *client, struct wl_resource *resource,
2037                uint32_t serial, struct wl_resource *buffer_resource,
2038                int32_t x, int32_t y)
2039 {
2040         struct weston_seat *seat = resource->data;
2041         struct weston_compositor *compositor = seat->compositor;
2042         struct wl_buffer *buffer = NULL;
2043
2044         if (serial < seat->seat.pointer->focus_serial)
2045                 return;
2046         if (seat->seat.pointer->focus == NULL)
2047                 return;
2048         if (seat->seat.pointer->focus->resource.client != client)
2049                 return;
2050
2051         if (buffer_resource)
2052                 buffer = buffer_resource->data;
2053
2054         weston_surface_attach(&seat->sprite->surface, buffer);
2055         empty_region(&seat->sprite->input);
2056
2057         if (!buffer)
2058                 return;
2059
2060         if (!weston_surface_is_mapped(seat->sprite)) {
2061                 wl_list_insert(&compositor->cursor_layer.surface_list,
2062                                &seat->sprite->layer_link);
2063                 weston_surface_assign_output(seat->sprite);
2064         }
2065
2066
2067         seat->hotspot_x = x;
2068         seat->hotspot_y = y;
2069         weston_surface_configure(seat->sprite,
2070                                  wl_fixed_to_int(seat->seat.pointer->x) - x,
2071                                  wl_fixed_to_int(seat->seat.pointer->y) - y,
2072                                  buffer->width, buffer->height);
2073
2074         surface_damage(NULL, &seat->sprite->surface.resource,
2075                        0, 0, buffer->width, buffer->height);
2076 }
2077
2078 static const struct wl_pointer_interface pointer_interface = {
2079         pointer_attach,
2080 };
2081
2082 static void
2083 handle_drag_surface_destroy(struct wl_listener *listener, void *data)
2084 {
2085         struct weston_seat *seat;
2086
2087         seat = container_of(listener, struct weston_seat,
2088                             drag_surface_destroy_listener);
2089
2090         seat->drag_surface = NULL;
2091 }
2092
2093 static void unbind_resource(struct wl_resource *resource)
2094 {
2095         wl_list_remove(&resource->link);
2096         free(resource);
2097 }
2098
2099 static void
2100 seat_get_pointer(struct wl_client *client, struct wl_resource *resource,
2101                  uint32_t id)
2102 {
2103         struct weston_seat *seat = resource->data;
2104         struct wl_resource *cr;
2105
2106         if (!seat->seat.pointer)
2107                 return;
2108
2109         cr = wl_client_add_object(client, &wl_pointer_interface,
2110                                   &pointer_interface, id, seat);
2111         wl_list_insert(&seat->seat.pointer->resource_list, &cr->link);
2112         cr->destroy = unbind_resource;
2113
2114         if (seat->seat.pointer->focus &&
2115             seat->seat.pointer->focus->resource.client == client) {
2116                 struct weston_surface *surface;
2117                 wl_fixed_t sx, sy;
2118
2119                 surface = (struct weston_surface *) seat->seat.pointer->focus;
2120                 weston_surface_from_global_fixed(surface,
2121                                                  seat->seat.pointer->x,
2122                                                  seat->seat.pointer->y,
2123                                                  &sx,
2124                                                  &sy);
2125                 wl_pointer_set_focus(seat->seat.pointer,
2126                                      seat->seat.pointer->focus,
2127                                      sx,
2128                                      sy);
2129         }
2130 }
2131
2132 static void
2133 seat_get_keyboard(struct wl_client *client, struct wl_resource *resource,
2134                   uint32_t id)
2135 {
2136         struct weston_seat *seat = resource->data;
2137         struct wl_resource *cr;
2138
2139         if (!seat->seat.keyboard)
2140                 return;
2141
2142         cr = wl_client_add_object(client, &wl_keyboard_interface, NULL, id,
2143                                   seat);
2144         wl_list_insert(&seat->seat.keyboard->resource_list, &cr->link);
2145         cr->destroy = unbind_resource;
2146
2147         if (seat->seat.keyboard->focus &&
2148             seat->seat.keyboard->focus->resource.client == client) {
2149                 wl_keyboard_set_focus(seat->seat.keyboard,
2150                                       seat->seat.keyboard->focus);
2151         }
2152 }
2153
2154 static void
2155 seat_get_touch(struct wl_client *client, struct wl_resource *resource,
2156                uint32_t id)
2157 {
2158         struct weston_seat *seat = resource->data;
2159         struct wl_resource *cr;
2160
2161         if (!seat->seat.touch)
2162                 return;
2163
2164         cr = wl_client_add_object(client, &wl_touch_interface, NULL, id, seat);
2165         wl_list_insert(&seat->seat.touch->resource_list, &cr->link);
2166         cr->destroy = unbind_resource;
2167 }
2168
2169 static const struct wl_seat_interface seat_interface = {
2170         seat_get_pointer,
2171         seat_get_keyboard,
2172         seat_get_touch,
2173 };
2174
2175 static void
2176 bind_seat(struct wl_client *client, void *data, uint32_t version, uint32_t id)
2177 {
2178         struct wl_seat *seat = data;
2179         struct wl_resource *resource;
2180         enum wl_seat_capability caps = 0;
2181
2182         resource = wl_client_add_object(client, &wl_seat_interface,
2183                                         &seat_interface, id, data);
2184         wl_list_insert(&seat->base_resource_list, &resource->link);
2185         resource->destroy = unbind_resource;
2186
2187         if (seat->pointer)
2188                 caps |= WL_SEAT_CAPABILITY_POINTER;
2189         if (seat->keyboard)
2190                 caps |= WL_SEAT_CAPABILITY_KEYBOARD;
2191         if (seat->touch)
2192                 caps |= WL_SEAT_CAPABILITY_TOUCH;
2193
2194         wl_seat_send_capabilities(resource, caps);
2195 }
2196
2197 static void
2198 device_handle_new_drag_icon(struct wl_listener *listener, void *data)
2199 {
2200         struct weston_seat *seat;
2201
2202         seat = container_of(listener, struct weston_seat,
2203                             new_drag_icon_listener);
2204
2205         weston_seat_update_drag_surface(&seat->seat, 0, 0);
2206 }
2207
2208 static int weston_compositor_xkb_init(struct weston_compositor *ec,
2209                                       struct xkb_rule_names *names)
2210 {
2211         ec->xkb_info.context = xkb_context_new(0);
2212         if (ec->xkb_info.context == NULL) {
2213                 fprintf(stderr, "failed to create XKB context\n");
2214                 return -1;
2215         }
2216
2217         if (names)
2218                 ec->xkb_info.names = *names;
2219         if (!ec->xkb_info.names.rules)
2220                 ec->xkb_info.names.rules = strdup("evdev");
2221         if (!ec->xkb_info.names.model)
2222                 ec->xkb_info.names.model = strdup("pc105");
2223         if (!ec->xkb_info.names.layout)
2224                 ec->xkb_info.names.layout = strdup("us");
2225
2226         ec->xkb_info.keymap = xkb_map_new_from_names(ec->xkb_info.context,
2227                                                      &ec->xkb_info.names, 0);
2228         if (ec->xkb_info.keymap == NULL) {
2229                 fprintf(stderr, "failed to compile XKB keymap\n");
2230                 return -1;
2231         }
2232
2233         ec->xkb_info.ctrl_mod = xkb_map_mod_get_index(ec->xkb_info.keymap,
2234                                                       XKB_MOD_NAME_CTRL);
2235         ec->xkb_info.alt_mod = xkb_map_mod_get_index(ec->xkb_info.keymap,
2236                                                      XKB_MOD_NAME_ALT);
2237         ec->xkb_info.super_mod = xkb_map_mod_get_index(ec->xkb_info.keymap,
2238                                                        XKB_MOD_NAME_LOGO);
2239
2240         return 0;
2241 }
2242
2243 static void weston_compositor_xkb_destroy(struct weston_compositor *ec)
2244 {
2245         xkb_map_unref(ec->xkb_info.keymap);
2246         xkb_context_unref(ec->xkb_info.context);
2247
2248         free((char *) ec->xkb_info.names.rules);
2249         free((char *) ec->xkb_info.names.model);
2250         free((char *) ec->xkb_info.names.layout);
2251         free((char *) ec->xkb_info.names.variant);
2252         free((char *) ec->xkb_info.names.options);
2253 }
2254
2255 WL_EXPORT void
2256 weston_seat_init(struct weston_seat *seat, struct weston_compositor *ec)
2257 {
2258         wl_seat_init(&seat->seat);
2259         wl_pointer_init(&seat->pointer);
2260         wl_seat_set_pointer(&seat->seat, &seat->pointer);
2261         wl_keyboard_init(&seat->keyboard);
2262         wl_seat_set_keyboard(&seat->seat, &seat->keyboard);
2263         wl_touch_init(&seat->touch);
2264         wl_seat_set_touch(&seat->seat, &seat->touch);
2265
2266         wl_display_add_global(ec->wl_display, &wl_seat_interface, seat,
2267                               bind_seat);
2268
2269         seat->sprite = weston_surface_create(ec);
2270         seat->sprite->surface.resource.data = seat->sprite;
2271
2272         seat->compositor = ec;
2273         seat->hotspot_x = 16;
2274         seat->hotspot_y = 16;
2275         seat->modifier_state = 0;
2276         seat->num_tp = 0;
2277
2278         seat->drag_surface_destroy_listener.notify =
2279                 handle_drag_surface_destroy;
2280
2281         wl_list_insert(ec->seat_list.prev, &seat->link);
2282
2283         seat->new_drag_icon_listener.notify = device_handle_new_drag_icon;
2284         wl_signal_add(&seat->seat.drag_icon_signal,
2285                       &seat->new_drag_icon_listener);
2286
2287         if (!ec->xkb_info.context)
2288                 weston_compositor_xkb_init(ec, NULL);
2289
2290         seat->xkb_state.mods_depressed = 0;
2291         seat->xkb_state.mods_latched = 0;
2292         seat->xkb_state.mods_locked = 0;
2293         seat->xkb_state.group = 0;
2294
2295         seat->xkb_state.state = xkb_state_new(ec->xkb_info.keymap);
2296         if (seat->xkb_state.state == NULL) {
2297                 fprintf(stderr, "failed to initialise XKB state\n");
2298                 exit(1);
2299         }
2300 }
2301
2302 WL_EXPORT void
2303 weston_seat_release(struct weston_seat *seat)
2304 {
2305         wl_list_remove(&seat->link);
2306         /* The global object is destroyed at wl_display_destroy() time. */
2307
2308         if (seat->sprite)
2309                 destroy_surface(&seat->sprite->surface.resource);
2310
2311         xkb_state_unref(seat->xkb_state.state);
2312
2313         wl_seat_release(&seat->seat);
2314 }
2315
2316 static void
2317 drag_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy)
2318 {
2319         weston_surface_configure(es,
2320                                  es->geometry.x + sx, es->geometry.y + sy,
2321                                  es->buffer->width, es->buffer->height);
2322 }
2323
2324 static int
2325 device_setup_new_drag_surface(struct weston_seat *ws,
2326                               struct weston_surface *surface)
2327 {
2328         struct wl_seat *seat = &ws->seat;
2329
2330         if (surface->configure) {
2331                 wl_resource_post_error(&surface->surface.resource,
2332                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2333                                        "surface->configure already set");
2334                 return 0;
2335         }
2336
2337         ws->drag_surface = surface;
2338
2339         weston_surface_set_position(ws->drag_surface,
2340                                     wl_fixed_to_double(seat->pointer->x),
2341                                     wl_fixed_to_double(seat->pointer->y));
2342
2343         surface->configure = drag_surface_configure;
2344
2345         wl_signal_add(&surface->surface.resource.destroy_signal,
2346                        &ws->drag_surface_destroy_listener);
2347
2348         return 1;
2349 }
2350
2351 static void
2352 device_release_drag_surface(struct weston_seat *seat)
2353 {
2354         seat->drag_surface->configure = NULL;
2355         undef_region(&seat->drag_surface->input);
2356         wl_list_remove(&seat->drag_surface_destroy_listener.link);
2357         seat->drag_surface = NULL;
2358 }
2359
2360 static void
2361 device_map_drag_surface(struct weston_seat *seat)
2362 {
2363         if (weston_surface_is_mapped(seat->drag_surface) ||
2364             !seat->drag_surface->buffer)
2365                 return;
2366
2367         wl_list_insert(&seat->sprite->layer_link,
2368                        &seat->drag_surface->layer_link);
2369         weston_surface_assign_output(seat->drag_surface);
2370         empty_region(&seat->drag_surface->input);
2371 }
2372
2373 static  void
2374 weston_seat_update_drag_surface(struct wl_seat *seat,
2375                                 int dx, int dy)
2376 {
2377         int surface_changed = 0;
2378         struct weston_seat *ws = (struct weston_seat *) seat;
2379
2380         if (!ws->drag_surface && !seat->drag_surface)
2381                 return;
2382
2383         if (ws->drag_surface && seat->drag_surface &&
2384             (&ws->drag_surface->surface.resource !=
2385              &seat->drag_surface->resource))
2386                 /* between calls to this funcion we got a new drag_surface */
2387                 surface_changed = 1;
2388
2389         if (!seat->drag_surface || surface_changed) {
2390                 device_release_drag_surface(ws);
2391                 if (!surface_changed)
2392                         return;
2393         }
2394
2395         if (!ws->drag_surface || surface_changed) {
2396                 struct weston_surface *surface = (struct weston_surface *)
2397                         seat->drag_surface;
2398                 if (!device_setup_new_drag_surface(ws, surface))
2399                         return;
2400         }
2401
2402         /* the client may not have attached a buffer to the drag surface
2403          * when we setup it up, so check if map is needed on every update */
2404         device_map_drag_surface(ws);
2405
2406         /* the client may have attached a buffer with a different size to
2407          * the drag surface, causing the input region to be reset */
2408         if (region_is_undefined(&ws->drag_surface->input))
2409                 empty_region(&ws->drag_surface->input);
2410
2411         if (!dx && !dy)
2412                 return;
2413
2414         weston_surface_set_position(ws->drag_surface,
2415                                     ws->drag_surface->geometry.x + wl_fixed_to_double(dx),
2416                                     ws->drag_surface->geometry.y + wl_fixed_to_double(dy));
2417 }
2418
2419 WL_EXPORT void
2420 weston_compositor_update_drag_surfaces(struct weston_compositor *compositor)
2421 {
2422         weston_seat_update_drag_surface(&compositor->seat->seat, 0, 0);
2423 }
2424
2425 static void
2426 bind_output(struct wl_client *client,
2427             void *data, uint32_t version, uint32_t id)
2428 {
2429         struct weston_output *output = data;
2430         struct weston_mode *mode;
2431         struct wl_resource *resource;
2432
2433         resource = wl_client_add_object(client,
2434                                         &wl_output_interface, NULL, id, data);
2435
2436         wl_list_insert(&output->resource_list, &resource->link);
2437         resource->destroy = unbind_resource;
2438
2439         wl_output_send_geometry(resource,
2440                                 output->x,
2441                                 output->y,
2442                                 output->mm_width,
2443                                 output->mm_height,
2444                                 output->subpixel,
2445                                 output->make, output->model);
2446
2447         wl_list_for_each (mode, &output->mode_list, link) {
2448                 wl_output_send_mode(resource,
2449                                     mode->flags,
2450                                     mode->width,
2451                                     mode->height,
2452                                     mode->refresh);
2453         }
2454 }
2455
2456 static const char vertex_shader[] =
2457         "uniform mat4 proj;\n"
2458         "attribute vec2 position;\n"
2459         "attribute vec2 texcoord;\n"
2460         "varying vec2 v_texcoord;\n"
2461         "void main()\n"
2462         "{\n"
2463         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
2464         "   v_texcoord = texcoord;\n"
2465         "}\n";
2466
2467 static const char texture_fragment_shader[] =
2468         "precision mediump float;\n"
2469         "varying vec2 v_texcoord;\n"
2470         "uniform sampler2D tex;\n"
2471         "uniform float alpha;\n"
2472         "uniform float bright;\n"
2473         "uniform float saturation;\n"
2474         "uniform float texwidth;\n"
2475         "uniform vec4 opaque;\n"
2476         "void main()\n"
2477         "{\n"
2478         "   if (v_texcoord.x < 0.0 || v_texcoord.x > texwidth ||\n"
2479         "       v_texcoord.y < 0.0 || v_texcoord.y > 1.0)\n"
2480         "      discard;\n"
2481         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
2482         "   float gray = dot(gl_FragColor.rgb, vec3(0.299, 0.587, 0.114));\n"
2483         "   vec3 range = (gl_FragColor.rgb - vec3 (gray, gray, gray)) * saturation;\n"
2484         "   gl_FragColor = vec4(vec3(gray + range), gl_FragColor.a);\n"
2485         "   gl_FragColor = vec4(vec3(bright, bright, bright) * gl_FragColor.rgb, gl_FragColor.a);\n"
2486         "   if (opaque.x <= v_texcoord.x && v_texcoord.x < opaque.y &&\n"
2487         "       opaque.z <= v_texcoord.y && v_texcoord.y < opaque.w)\n"
2488         "      gl_FragColor.a = 1.0;\n"
2489         "   gl_FragColor = alpha * gl_FragColor;\n"
2490         "}\n";
2491
2492 static const char solid_fragment_shader[] =
2493         "precision mediump float;\n"
2494         "uniform vec4 color;\n"
2495         "uniform float alpha;\n"
2496         "void main()\n"
2497         "{\n"
2498         "   gl_FragColor = alpha * color\n;"
2499         "}\n";
2500
2501 static int
2502 compile_shader(GLenum type, const char *source)
2503 {
2504         GLuint s;
2505         char msg[512];
2506         GLint status;
2507
2508         s = glCreateShader(type);
2509         glShaderSource(s, 1, &source, NULL);
2510         glCompileShader(s);
2511         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
2512         if (!status) {
2513                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
2514                 fprintf(stderr, "shader info: %s\n", msg);
2515                 return GL_NONE;
2516         }
2517
2518         return s;
2519 }
2520
2521 static int
2522 weston_shader_init(struct weston_shader *shader,
2523                    const char *vertex_source, const char *fragment_source)
2524 {
2525         char msg[512];
2526         GLint status;
2527
2528         shader->vertex_shader =
2529                 compile_shader(GL_VERTEX_SHADER, vertex_source);
2530         shader->fragment_shader =
2531                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
2532
2533         shader->program = glCreateProgram();
2534         glAttachShader(shader->program, shader->vertex_shader);
2535         glAttachShader(shader->program, shader->fragment_shader);
2536         glBindAttribLocation(shader->program, 0, "position");
2537         glBindAttribLocation(shader->program, 1, "texcoord");
2538
2539         glLinkProgram(shader->program);
2540         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
2541         if (!status) {
2542                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
2543                 fprintf(stderr, "link info: %s\n", msg);
2544                 return -1;
2545         }
2546
2547         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
2548         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
2549         shader->alpha_uniform = glGetUniformLocation(shader->program, "alpha");
2550         shader->brightness_uniform = glGetUniformLocation(shader->program, "bright");
2551         shader->saturation_uniform = glGetUniformLocation(shader->program, "saturation");
2552         shader->color_uniform = glGetUniformLocation(shader->program, "color");
2553         shader->texwidth_uniform = glGetUniformLocation(shader->program, "texwidth");
2554         shader->opaque_uniform = glGetUniformLocation(shader->program, "opaque");
2555
2556         return 0;
2557 }
2558
2559 WL_EXPORT void
2560 weston_output_destroy(struct weston_output *output)
2561 {
2562         struct weston_compositor *c = output->compositor;
2563
2564         pixman_region32_fini(&output->region);
2565         pixman_region32_fini(&output->previous_damage);
2566         output->compositor->output_id_pool &= ~(1 << output->id);
2567
2568         wl_display_remove_global(c->wl_display, output->global);
2569 }
2570
2571 WL_EXPORT void
2572 weston_text_cursor_position_notify(struct weston_surface *surface,
2573                                                 int32_t cur_pos_x,
2574                                                 int32_t cur_pos_y)
2575 {
2576         struct weston_output *output;
2577         int32_t global_x, global_y;
2578
2579         weston_surface_to_global(surface, cur_pos_x, cur_pos_y,
2580                                                 &global_x, &global_y);
2581
2582         wl_list_for_each(output, &surface->compositor->output_list, link)
2583                 if (output->zoom.active &&
2584                     pixman_region32_contains_point(&output->region,
2585                                                 global_x, global_y, NULL))
2586                         weston_output_update_zoom(output,
2587                                                 wl_fixed_from_int(global_x),
2588                                                 wl_fixed_from_int(global_y),
2589                                                 ZOOM_TEXT_CURSOR);
2590 }
2591
2592 WL_EXPORT void
2593 weston_output_update_zoom(struct weston_output *output,
2594                                                 wl_fixed_t fx,
2595                                                 wl_fixed_t fy,
2596                                                 uint32_t type)
2597 {
2598         int32_t x, y;
2599         float trans_min, trans_max;
2600
2601         if (output->zoom.level >= 1.0)
2602                 return;
2603
2604         x = wl_fixed_to_int(fx);
2605         y = wl_fixed_to_int(fy);
2606
2607         output->zoom.trans_x =
2608                 (((float)(x - output->x) / output->current->width) *
2609                 (output->zoom.level * 2)) - output->zoom.level;
2610         output->zoom.trans_y =
2611                 (((float)(y - output->y) / output->current->height) *
2612                 (output->zoom.level * 2)) - output->zoom.level;
2613
2614         if (type == ZOOM_TEXT_CURSOR) {
2615                 output->zoom.trans_x *= 1 / output->zoom.level;
2616                 output->zoom.trans_y *= 1 / output->zoom.level;
2617
2618                 trans_max = output->zoom.level * 2 - output->zoom.level;
2619                 trans_min = -trans_max;
2620
2621                 if (output->zoom.trans_x > trans_max)
2622                         output->zoom.trans_x = trans_max;
2623                 else if (output->zoom.trans_x < trans_min)
2624                         output->zoom.trans_x = trans_min;
2625                 if (output->zoom.trans_y > trans_max)
2626                         output->zoom.trans_y = trans_max;
2627                 else if (output->zoom.trans_y < trans_min)
2628                         output->zoom.trans_y = trans_min;
2629         }
2630
2631         output->dirty = 1;
2632         weston_output_damage(output);
2633 }
2634
2635 WL_EXPORT void
2636 weston_output_update_matrix(struct weston_output *output)
2637 {
2638         int flip;
2639         float magnification;
2640         struct weston_matrix camera;
2641         struct weston_matrix modelview;
2642
2643         weston_matrix_init(&output->matrix);
2644         weston_matrix_translate(&output->matrix,
2645                                 -(output->x + (output->border.right + output->current->width - output->border.left) / 2.0),
2646                                 -(output->y + (output->border.bottom + output->current->height - output->border.top) / 2.0), 0);
2647
2648         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
2649         weston_matrix_scale(&output->matrix,
2650                             2.0 / (output->current->width + output->border.left + output->border.right),
2651                             flip * 2.0 / (output->current->height + output->border.top + output->border.bottom), 1);
2652
2653         if (output->zoom.active) {
2654                 magnification = 1 / (1 - output->zoom.level);
2655                 weston_matrix_init(&camera);
2656                 weston_matrix_init(&modelview);
2657                 weston_matrix_translate(&camera, output->zoom.trans_x, flip * output->zoom.trans_y, 0);
2658                 weston_matrix_invert(&modelview, &camera);
2659                 weston_matrix_scale(&modelview, magnification, magnification, 1.0);
2660                 weston_matrix_multiply(&output->matrix, &modelview);
2661         }
2662
2663         output->dirty = 0;
2664 }
2665
2666 WL_EXPORT void
2667 weston_output_move(struct weston_output *output, int x, int y)
2668 {
2669         output->x = x;
2670         output->y = y;
2671
2672         pixman_region32_init(&output->previous_damage);
2673         pixman_region32_init_rect(&output->region, x, y,
2674                                   output->current->width,
2675                                   output->current->height);
2676 }
2677
2678 WL_EXPORT void
2679 weston_output_init(struct weston_output *output, struct weston_compositor *c,
2680                    int x, int y, int width, int height, uint32_t flags)
2681 {
2682         output->compositor = c;
2683         output->x = x;
2684         output->y = y;
2685         output->border.top = 0;
2686         output->border.bottom = 0;
2687         output->border.left = 0;
2688         output->border.right = 0;
2689         output->mm_width = width;
2690         output->mm_height = height;
2691         output->dirty = 1;
2692         wl_list_init(&output->read_pixels_list);
2693
2694         output->zoom.active = 0;
2695         output->zoom.increment = 0.05;
2696         output->zoom.level = 0.0;
2697         output->zoom.trans_x = 0.0;
2698         output->zoom.trans_y = 0.0;
2699
2700         output->flags = flags;
2701         weston_output_move(output, x, y);
2702         weston_output_damage(output);
2703
2704         wl_signal_init(&output->frame_signal);
2705         wl_list_init(&output->frame_callback_list);
2706         wl_list_init(&output->resource_list);
2707
2708         output->id = ffs(~output->compositor->output_id_pool) - 1;
2709         output->compositor->output_id_pool |= 1 << output->id;
2710
2711         output->global =
2712                 wl_display_add_global(c->wl_display, &wl_output_interface,
2713                                       output, bind_output);
2714 }
2715
2716 WL_EXPORT void
2717 weston_output_do_read_pixels(struct weston_output *output)
2718 {
2719         struct weston_read_pixels *r, *next;
2720
2721         glPixelStorei(GL_PACK_ALIGNMENT, 1);
2722         wl_list_for_each_safe(r, next, &output->read_pixels_list, link) {
2723                 glReadPixels(r->x, r->y, r->width, r->height,
2724                              output->compositor->read_format,
2725                              GL_UNSIGNED_BYTE, r->data);
2726                 r->done(r, output);
2727         }
2728 }
2729
2730 static void
2731 compositor_bind(struct wl_client *client,
2732                 void *data, uint32_t version, uint32_t id)
2733 {
2734         struct weston_compositor *compositor = data;
2735
2736         wl_client_add_object(client, &wl_compositor_interface,
2737                              &compositor_interface, id, compositor);
2738 }
2739
2740 WL_EXPORT int
2741 weston_compositor_init(struct weston_compositor *ec, struct wl_display *display)
2742 {
2743         struct wl_event_loop *loop;
2744         const char *extensions;
2745
2746         ec->wl_display = display;
2747         wl_signal_init(&ec->destroy_signal);
2748         wl_signal_init(&ec->activate_signal);
2749         wl_signal_init(&ec->lock_signal);
2750         wl_signal_init(&ec->unlock_signal);
2751         ec->launcher_sock = weston_environment_get_fd("WESTON_LAUNCHER_SOCK");
2752
2753         ec->output_id_pool = 0;
2754
2755         if (!wl_display_add_global(display, &wl_compositor_interface,
2756                                    ec, compositor_bind))
2757                 return -1;
2758
2759         wl_display_init_shm(display);
2760
2761         ec->image_target_texture_2d =
2762                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
2763         ec->image_target_renderbuffer_storage = (void *)
2764                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
2765         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
2766         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
2767         ec->bind_display =
2768                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
2769         ec->unbind_display =
2770                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
2771
2772         extensions = (const char *) glGetString(GL_EXTENSIONS);
2773         if (!extensions) {
2774                 fprintf(stderr, "Retrieving GL extension string failed.\n");
2775                 return -1;
2776         }
2777
2778         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
2779                 fprintf(stderr,
2780                         "GL_EXT_texture_format_BGRA8888 not available\n");
2781                 return -1;
2782         }
2783
2784         if (strstr(extensions, "GL_EXT_read_format_bgra"))
2785                 ec->read_format = GL_BGRA_EXT;
2786         else
2787                 ec->read_format = GL_RGBA;
2788
2789         if (strstr(extensions, "GL_EXT_unpack_subimage"))
2790                 ec->has_unpack_subimage = 1;
2791
2792         extensions =
2793                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
2794         if (!extensions) {
2795                 fprintf(stderr, "Retrieving EGL extension string failed.\n");
2796                 return -1;
2797         }
2798
2799         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
2800                 ec->has_bind_display = 1;
2801         if (ec->has_bind_display)
2802                 ec->bind_display(ec->display, ec->wl_display);
2803
2804         wl_list_init(&ec->surface_list);
2805         wl_list_init(&ec->layer_list);
2806         wl_list_init(&ec->seat_list);
2807         wl_list_init(&ec->output_list);
2808         wl_list_init(&ec->binding_list);
2809         wl_list_init(&ec->animation_list);
2810         weston_spring_init(&ec->fade.spring, 30.0, 1.0, 1.0);
2811         ec->fade.animation.frame = fade_frame;
2812         wl_list_init(&ec->fade.animation.link);
2813
2814         weston_layer_init(&ec->fade_layer, &ec->layer_list);
2815         weston_layer_init(&ec->cursor_layer, &ec->fade_layer.link);
2816
2817         screenshooter_create(ec);
2818         text_cursor_position_notifier_create(ec);
2819
2820         ec->ping_handler = NULL;
2821
2822         wl_data_device_manager_init(ec->wl_display);
2823
2824         glActiveTexture(GL_TEXTURE0);
2825
2826         if (weston_shader_init(&ec->texture_shader,
2827                              vertex_shader, texture_fragment_shader) < 0)
2828                 return -1;
2829         if (weston_shader_init(&ec->solid_shader,
2830                              vertex_shader, solid_fragment_shader) < 0)
2831                 return -1;
2832
2833         loop = wl_display_get_event_loop(ec->wl_display);
2834         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
2835         wl_event_source_timer_update(ec->idle_source, ec->idle_time * 1000);
2836
2837         ec->input_loop = wl_event_loop_create();
2838
2839         weston_compositor_schedule_repaint(ec);
2840
2841         return 0;
2842 }
2843
2844 WL_EXPORT void
2845 weston_compositor_shutdown(struct weston_compositor *ec)
2846 {
2847         struct weston_output *output, *next;
2848
2849         wl_event_source_remove(ec->idle_source);
2850         if (ec->input_loop_source)
2851                 wl_event_source_remove(ec->input_loop_source);
2852
2853         /* Destroy all outputs associated with this compositor */
2854         wl_list_for_each_safe(output, next, &ec->output_list, link)
2855                 output->destroy(output);
2856
2857         weston_binding_list_destroy_all(&ec->binding_list);
2858
2859         wl_array_release(&ec->vertices);
2860         wl_array_release(&ec->indices);
2861
2862         wl_event_loop_destroy(ec->input_loop);
2863 }
2864
2865 static int on_term_signal(int signal_number, void *data)
2866 {
2867         struct wl_display *display = data;
2868
2869         fprintf(stderr, "caught signal %d\n", signal_number);
2870         wl_display_terminate(display);
2871
2872         return 1;
2873 }
2874
2875 static void
2876 on_segv_signal(int s, siginfo_t *siginfo, void *context)
2877 {
2878         void *buffer[32];
2879         int i, count;
2880         Dl_info info;
2881
2882         fprintf(stderr, "caught segv\n");
2883
2884         count = backtrace(buffer, ARRAY_LENGTH(buffer));
2885         for (i = 0; i < count; i++) {
2886                 dladdr(buffer[i], &info);
2887                 fprintf(stderr, "  [%016lx]  %s  (%s)\n",
2888                         (long) buffer[i],
2889                         info.dli_sname ? info.dli_sname : "--",
2890                         info.dli_fname);
2891         }
2892
2893         longjmp(segv_jmp_buf, 1);
2894 }
2895
2896
2897 static void *
2898 load_module(const char *name, const char *entrypoint, void **handle)
2899 {
2900         char path[PATH_MAX];
2901         void *module, *init;
2902
2903         if (name[0] != '/')
2904                 snprintf(path, sizeof path, "%s/%s", MODULEDIR, name);
2905         else
2906                 snprintf(path, sizeof path, "%s", name);
2907
2908         module = dlopen(path, RTLD_LAZY);
2909         if (!module) {
2910                 fprintf(stderr,
2911                         "failed to load module '%s': %s\n", path, dlerror());
2912                 return NULL;
2913         }
2914
2915         init = dlsym(module, entrypoint);
2916         if (!init) {
2917                 fprintf(stderr,
2918                         "failed to lookup init function in '%s': %s\n",
2919                         path, dlerror());
2920                 return NULL;
2921         }
2922
2923         return init;
2924 }
2925
2926 int main(int argc, char *argv[])
2927 {
2928         struct wl_display *display;
2929         struct weston_compositor *ec;
2930         struct wl_event_source *signals[4];
2931         struct wl_event_loop *loop;
2932         struct sigaction segv_action;
2933         void *shell_module, *backend_module, *xserver_module;
2934         int (*module_init)(struct weston_compositor *ec);
2935         struct weston_compositor
2936                 *(*backend_init)(struct wl_display *display,
2937                                  int argc, char *argv[]);
2938         int i;
2939         char *backend = NULL;
2940         char *shell = NULL;
2941         char *module = NULL;
2942         int32_t idle_time = 300;
2943         int32_t xserver = 0;
2944         char *socket_name = NULL;
2945         char *config_file;
2946         struct xkb_rule_names xkb_names;
2947
2948         const struct config_key shell_config_keys[] = {
2949                 { "type", CONFIG_KEY_STRING, &shell },
2950         };
2951
2952         const struct config_key keyboard_config_keys[] = {
2953                 { "keymap_rules", CONFIG_KEY_STRING, &xkb_names.rules },
2954                 { "keymap_model", CONFIG_KEY_STRING, &xkb_names.model },
2955                 { "keymap_layout", CONFIG_KEY_STRING, &xkb_names.layout },
2956                 { "keymap_variant", CONFIG_KEY_STRING, &xkb_names.variant },
2957                 { "keymap_options", CONFIG_KEY_STRING, &xkb_names.options },
2958         };
2959
2960         const struct config_section cs[] = {
2961                 { "shell",
2962                   shell_config_keys, ARRAY_LENGTH(shell_config_keys) },
2963                 { "keyboard",
2964                   keyboard_config_keys, ARRAY_LENGTH(keyboard_config_keys) },
2965         };
2966
2967         const struct weston_option core_options[] = {
2968                 { WESTON_OPTION_STRING, "backend", 'B', &backend },
2969                 { WESTON_OPTION_STRING, "socket", 'S', &socket_name },
2970                 { WESTON_OPTION_INTEGER, "idle-time", 'i', &idle_time },
2971                 { WESTON_OPTION_BOOLEAN, "xserver", 0, &xserver },
2972                 { WESTON_OPTION_STRING, "module", 0, &module },
2973         };
2974
2975         memset(&xkb_names, 0, sizeof(xkb_names));
2976
2977         argc = parse_options(core_options,
2978                              ARRAY_LENGTH(core_options), argc, argv);
2979
2980         display = wl_display_create();
2981
2982         loop = wl_display_get_event_loop(display);
2983         signals[0] = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal,
2984                                               display);
2985         signals[1] = wl_event_loop_add_signal(loop, SIGINT, on_term_signal,
2986                                               display);
2987         signals[2] = wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal,
2988                                               display);
2989
2990         wl_list_init(&child_process_list);
2991         signals[3] = wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler,
2992                                               NULL);
2993
2994         segv_action.sa_flags = SA_SIGINFO | SA_RESETHAND;
2995         segv_action.sa_sigaction = on_segv_signal;
2996         sigemptyset(&segv_action.sa_mask);
2997         sigaction(SIGSEGV, &segv_action, NULL);
2998
2999         if (!backend) {
3000                 if (getenv("WAYLAND_DISPLAY"))
3001                         backend = "wayland-backend.so";
3002                 else if (getenv("DISPLAY"))
3003                         backend = "x11-backend.so";
3004                 else if (getenv("OPENWFD"))
3005                         backend = "openwfd-backend.so";
3006                 else
3007                         backend = "drm-backend.so";
3008         }
3009
3010         config_file = config_file_path("weston.ini");
3011         parse_config_file(config_file, cs, ARRAY_LENGTH(cs), shell);
3012         free(config_file);
3013
3014         backend_init = load_module(backend, "backend_init", &backend_module);
3015         if (!backend_init)
3016                 exit(EXIT_FAILURE);
3017
3018         ec = backend_init(display, argc, argv);
3019         if (ec == NULL) {
3020                 fprintf(stderr, "failed to create compositor\n");
3021                 exit(EXIT_FAILURE);
3022         }
3023
3024         for (i = 1; argv[i]; i++)
3025                 fprintf(stderr, "unhandled option: %s\n", argv[i]);
3026         if (argv[1])
3027                 exit(EXIT_FAILURE);
3028
3029         if (weston_compositor_xkb_init(ec, &xkb_names) == -1) {
3030                 fprintf(stderr, "failed to initialise keyboard support\n");
3031                 exit(EXIT_FAILURE);
3032         }
3033
3034         ec->option_idle_time = idle_time;
3035         ec->idle_time = idle_time;
3036
3037         module_init = NULL;
3038         if (xserver)
3039                 module_init = load_module("xwayland.so",
3040                                           "weston_xserver_init",
3041                                           &xserver_module);
3042         if (module_init && module_init(ec) < 0)
3043                 exit(EXIT_FAILURE);
3044
3045         if (!shell)
3046                 shell = "desktop-shell.so";
3047         module_init = load_module(shell, "shell_init", &shell_module);
3048         if (!module_init || module_init(ec) < 0)
3049                 exit(EXIT_FAILURE);
3050
3051
3052         module_init = NULL;
3053         if (module)
3054                 module_init = load_module(module, "module_init", NULL);
3055         if (module_init && module_init(ec) < 0)
3056                 exit(EXIT_FAILURE);
3057
3058         if (wl_display_add_socket(display, socket_name)) {
3059                 fprintf(stderr, "failed to add socket: %m\n");
3060                 exit(EXIT_FAILURE);
3061         }
3062
3063         weston_compositor_dpms_on(ec);
3064         weston_compositor_wake(ec);
3065         if (setjmp(segv_jmp_buf) == 0)
3066                 wl_display_run(display);
3067
3068         /* prevent further rendering while shutting down */
3069         ec->state = WESTON_COMPOSITOR_SLEEPING;
3070
3071         wl_signal_emit(&ec->destroy_signal, ec);
3072
3073         if (ec->has_bind_display)
3074                 ec->unbind_display(ec->display, display);
3075
3076         for (i = ARRAY_LENGTH(signals); i;)
3077                 wl_event_source_remove(signals[--i]);
3078
3079         weston_compositor_xkb_destroy(ec);
3080
3081         ec->destroy(ec);
3082         wl_display_destroy(display);
3083
3084         return 0;
3085 }