compositor/compositor.c

   1 /*
   2  * Copyright © 2010-2011 Intel Corporation
   3  * Copyright © 2008-2011 Kristian Høgsberg
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and
   6  * its documentation for any purpose is hereby granted without fee, provided
   7  * that the above copyright notice appear in all copies and that both that
   8  * copyright notice and this permission notice appear in supporting
   9  * documentation, and that the name of the copyright holders not be used in
  10  * advertising or publicity pertaining to distribution of the software
  11  * without specific, written prior permission.  The copyright holders make
  12  * no representations about the suitability of this software for any
  13  * purpose.  It is provided "as is" without express or implied warranty.
  14  *
  15  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  16  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  17  * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  18  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  19  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  20  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  21  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  */
  23
  24 #define _GNU_SOURCE
  25
  26 #include "config.h"
  27
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include <stdint.h>
  32 #include <limits.h>
  33 #include <stdarg.h>
  34 #include <assert.h>
  35 #include <sys/ioctl.h>
  36 #include <sys/wait.h>
  37 #include <sys/types.h>
  38 #include <sys/socket.h>
  39 #include <fcntl.h>
  40 #include <unistd.h>
  41 #include <math.h>
  42 #include <linux/input.h>
  43 #include <dlfcn.h>
  44 #include <getopt.h>
  45 #include <signal.h>
  46
  47 #include <wayland-server.h>
  48 #include "compositor.h"
  49
  50 static const char *option_socket_name = NULL;
  51
  52 static struct wl_list child_process_list;
  53
  54 static int
  55 sigchld_handler(int signal_number, void *data)
  56 {
  57         struct wlsc_process *p;
  58         int status;
  59         pid_t pid;
  60
  61         pid = wait(&status);
  62         wl_list_for_each(p, &child_process_list, link) {
  63                 if (p->pid == pid)
  64                         break;
  65         }
  66
  67         if (&p->link == &child_process_list) {
  68                 fprintf(stderr, "unknown child process exited\n");
  69                 return 1;
  70         }
  71
  72         wl_list_remove(&p->link);
  73         p->cleanup(p, status);
  74
  75         return 1;
  76 }
  77
  78 WL_EXPORT void
  79 wlsc_watch_process(struct wlsc_process *process)
  80 {
  81         wl_list_insert(&child_process_list, &process->link);
  82 }
  83
  84 static void
  85 child_client_exec(int sockfd, const char *path)
  86 {
  87         int clientfd;
  88         char s[32];
  89         sigset_t allsigs;
  90
  91         /* do not give our signal mask to the new process */
  92         sigfillset(&allsigs);
  93         sigprocmask(SIG_UNBLOCK, &allsigs, NULL);
  94
  95         /* SOCK_CLOEXEC closes both ends, so we dup the fd to get a
  96          * non-CLOEXEC fd to pass through exec. */
  97         clientfd = dup(sockfd);
  98         if (clientfd == -1) {
  99                 fprintf(stderr, "compositor: dup failed: %m\n");
 100                 return;
 101         }
 102
 103         snprintf(s, sizeof s, "%d", clientfd);
 104         setenv("WAYLAND_SOCKET", s, 1);
 105
 106         if (execl(path, path, NULL) < 0)
 107                 fprintf(stderr, "compositor: executing '%s' failed: %m\n",
 108                         path);
 109 }
 110
 111 WL_EXPORT struct wl_client *
 112 wlsc_client_launch(struct wlsc_compositor *compositor,
 113                    struct wlsc_process *proc,
 114                    const char *path,
 115                    wlsc_process_cleanup_func_t cleanup)
 116 {
 117         int sv[2];
 118         pid_t pid;
 119         struct wl_client *client;
 120
 121         if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sv) < 0) {
 122                 fprintf(stderr, "wlsc_client_launch: "
 123                         "socketpair failed while launching '%s': %m\n",
 124                         path);
 125                 return NULL;
 126         }
 127
 128         pid = fork();
 129         if (pid == -1) {
 130                 close(sv[0]);
 131                 close(sv[1]);
 132                 fprintf(stderr,  "wlsc_client_launch: "
 133                         "fork failed while launching '%s': %m\n", path);
 134                 return NULL;
 135         }
 136
 137         if (pid == 0) {
 138                 child_client_exec(sv[1], path);
 139                 exit(-1);
 140         }
 141
 142         close(sv[1]);
 143
 144         client = wl_client_create(compositor->wl_display, sv[0]);
 145         if (!client) {
 146                 close(sv[0]);
 147                 fprintf(stderr, "wlsc_client_launch: "
 148                         "wl_client_create failed while launching '%s'.\n",
 149                         path);
 150                 return NULL;
 151         }
 152
 153         proc->pid = pid;
 154         proc->cleanup = cleanup;
 155         wlsc_watch_process(proc);
 156
 157         return client;
 158 }
 159
 160 static void
 161 surface_handle_buffer_destroy(struct wl_listener *listener,
 162                               struct wl_resource *resource, uint32_t time)
 163 {
 164         struct wlsc_surface *es = container_of(listener, struct wlsc_surface,
 165                                                buffer_destroy_listener);
 166
 167         es->buffer = NULL;
 168 }
 169
 170 static void
 171 output_handle_scanout_buffer_destroy(struct wl_listener *listener,
 172                                      struct wl_resource *resource,
 173                                      uint32_t time)
 174 {
 175         struct wlsc_output *output =
 176                 container_of(listener, struct wlsc_output,
 177                              scanout_buffer_destroy_listener);
 178
 179         output->scanout_buffer = NULL;
 180
 181         if (!output->pending_scanout_buffer)
 182                 wlsc_compositor_schedule_repaint(output->compositor);
 183 }
 184
 185 static void
 186 output_handle_pending_scanout_buffer_destroy(struct wl_listener *listener,
 187                                              struct wl_resource *resource,
 188                                              uint32_t time)
 189 {
 190         struct wlsc_output *output =
 191                 container_of(listener, struct wlsc_output,
 192                              pending_scanout_buffer_destroy_listener);
 193
 194         output->pending_scanout_buffer = NULL;
 195
 196         wlsc_compositor_schedule_repaint(output->compositor);
 197 }
 198
 199
 200 WL_EXPORT struct wlsc_surface *
 201 wlsc_surface_create(struct wlsc_compositor *compositor,
 202                     int32_t x, int32_t y, int32_t width, int32_t height)
 203 {
 204         struct wlsc_surface *surface;
 205
 206         surface = calloc(1, sizeof *surface);
 207         if (surface == NULL)
 208                 return NULL;
 209
 210         wl_list_init(&surface->link);
 211         wl_list_init(&surface->buffer_link);
 212
 213         glGenTextures(1, &surface->texture);
 214         glBindTexture(GL_TEXTURE_2D, surface->texture);
 215         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 216         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 217
 218         surface->surface.resource.client = NULL;
 219
 220         surface->compositor = compositor;
 221         surface->visual = WLSC_NONE_VISUAL;
 222         surface->image = EGL_NO_IMAGE_KHR;
 223         surface->saved_texture = 0;
 224         surface->x = x;
 225         surface->y = y;
 226         surface->width = width;
 227         surface->height = height;
 228         surface->alpha = 255;
 229
 230         surface->fullscreen_output = NULL;
 231         surface->buffer = NULL;
 232         surface->output = NULL;
 233
 234         pixman_region32_init(&surface->damage);
 235         pixman_region32_init(&surface->opaque);
 236         wl_list_init(&surface->frame_callback_list);
 237
 238         surface->buffer_destroy_listener.func = surface_handle_buffer_destroy;
 239
 240         surface->transform = NULL;
 241
 242         return surface;
 243 }
 244
 245 WL_EXPORT void
 246 wlsc_surface_damage_rectangle(struct wlsc_surface *surface,
 247                               int32_t x, int32_t y,
 248                               int32_t width, int32_t height)
 249 {
 250         struct wlsc_compositor *compositor = surface->compositor;
 251
 252         pixman_region32_union_rect(&surface->damage,
 253                                    &surface->damage,
 254                                    surface->x + x, surface->y + y,
 255                                    width, height);
 256         wlsc_compositor_schedule_repaint(compositor);
 257 }
 258
 259 WL_EXPORT void
 260 wlsc_surface_damage(struct wlsc_surface *surface)
 261 {
 262         wlsc_surface_damage_rectangle(surface, 0, 0,
 263                                       surface->width, surface->height);
 264 }
 265
 266 WL_EXPORT void
 267 wlsc_surface_damage_below(struct wlsc_surface *surface)
 268 {
 269         struct wlsc_surface *below;
 270
 271         if (surface->output == NULL)
 272                 return;
 273
 274         if (surface->link.next == &surface->compositor->surface_list)
 275                 return;
 276
 277         below = container_of(surface->link.next, struct wlsc_surface, link);
 278
 279         pixman_region32_union_rect(&below->damage,
 280                                    &below->damage,
 281                                    surface->x, surface->y,
 282                                    surface->width, surface->height);
 283         wlsc_compositor_schedule_repaint(surface->compositor);
 284 }
 285
 286 WL_EXPORT void
 287 wlsc_surface_configure(struct wlsc_surface *surface,
 288                        int x, int y, int width, int height)
 289 {
 290         wlsc_surface_damage_below(surface);
 291
 292         surface->x = x;
 293         surface->y = y;
 294         surface->width = width;
 295         surface->height = height;
 296
 297         wlsc_surface_assign_output(surface);
 298         wlsc_surface_damage(surface);
 299
 300         pixman_region32_fini(&surface->opaque);
 301         if (surface->visual == WLSC_RGB_VISUAL)
 302                 pixman_region32_init_rect(&surface->opaque,
 303                                           surface->x, surface->y,
 304                                           surface->width, surface->height);
 305         else
 306                 pixman_region32_init(&surface->opaque);
 307 }
 308
 309 WL_EXPORT uint32_t
 310 wlsc_compositor_get_time(void)
 311 {
 312         struct timeval tv;
 313
 314         gettimeofday(&tv, NULL);
 315
 316         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 317 }
 318
 319 WL_EXPORT void
 320 wlsc_compositor_repick(struct wlsc_compositor *compositor)
 321 {
 322         struct wlsc_input_device *device;
 323         struct wlsc_surface *surface;
 324         int32_t sx, sy;
 325         uint32_t time;
 326
 327         if (!compositor->focus)
 328                 return;
 329
 330         time = wlsc_compositor_get_time();
 331         wl_list_for_each(device, &compositor->input_device_list, link) {
 332                 if (device->input_device.grab)
 333                         continue;
 334                 surface = pick_surface(&device->input_device, &sx, &sy);
 335                 wl_input_device_set_pointer_focus(&device->input_device,
 336                                                   &surface->surface,
 337                                                   time,
 338                                                   device->input_device.x,
 339                                                   device->input_device.y,
 340                                                   sx, sy);
 341         }
 342 }
 343
 344 static void
 345 destroy_surface(struct wl_resource *resource)
 346 {
 347         struct wlsc_surface *surface =
 348                 container_of(resource, struct wlsc_surface, surface.resource);
 349         struct wlsc_compositor *compositor = surface->compositor;
 350
 351         wlsc_surface_damage_below(surface);
 352
 353         wl_list_remove(&surface->link);
 354         wlsc_compositor_repick(compositor);
 355
 356         if (surface->saved_texture == 0)
 357                 glDeleteTextures(1, &surface->texture);
 358         else
 359                 glDeleteTextures(1, &surface->saved_texture);
 360
 361         if (surface->buffer)
 362                 wl_list_remove(&surface->buffer_destroy_listener.link);
 363
 364         if (surface->image != EGL_NO_IMAGE_KHR)
 365                 compositor->destroy_image(compositor->display,
 366                                           surface->image);
 367
 368         wl_list_remove(&surface->buffer_link);
 369
 370         free(surface);
 371 }
 372
 373 static void
 374 wlsc_buffer_attach(struct wl_buffer *buffer, struct wl_surface *surface)
 375 {
 376         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 377         struct wlsc_compositor *ec = es->compositor;
 378         struct wl_list *surfaces_attached_to;
 379
 380         if (es->saved_texture != 0)
 381                 es->texture = es->saved_texture;
 382
 383         glBindTexture(GL_TEXTURE_2D, es->texture);
 384
 385         if (wl_buffer_is_shm(buffer)) {
 386                 /* Unbind any EGLImage texture that may be bound, so we don't
 387                  * overwrite it.*/
 388                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 389                              0, 0, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, NULL);
 390                 es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
 391                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 392                              es->pitch, buffer->height, 0,
 393                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
 394                              wl_shm_buffer_get_data(buffer));
 395
 396                 switch (wl_shm_buffer_get_format(buffer)) {
 397                 case WL_SHM_FORMAT_ARGB32:
 398                         es->visual = WLSC_ARGB_VISUAL;
 399                         break;
 400                 case WL_SHM_FORMAT_PREMULTIPLIED_ARGB32:
 401                         es->visual = WLSC_PREMUL_ARGB_VISUAL;
 402                         break;
 403                 case WL_SHM_FORMAT_XRGB32:
 404                         es->visual = WLSC_RGB_VISUAL;
 405                         break;
 406                 }
 407
 408                 surfaces_attached_to = buffer->user_data;
 409
 410                 wl_list_remove(&es->buffer_link);
 411                 wl_list_insert(surfaces_attached_to, &es->buffer_link);
 412         } else {
 413                 if (es->image != EGL_NO_IMAGE_KHR)
 414                         ec->destroy_image(ec->display, es->image);
 415                 es->image = ec->create_image(ec->display, NULL,
 416                                              EGL_WAYLAND_BUFFER_WL,
 417                                              buffer, NULL);
 418
 419                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 420
 421                 /* FIXME: we need to get the visual from the wl_buffer */
 422                 es->visual = WLSC_PREMUL_ARGB_VISUAL;
 423                 es->pitch = es->width;
 424         }
 425 }
 426
 427 static int
 428 texture_region(struct wlsc_surface *es, pixman_region32_t *region)
 429 {
 430         struct wlsc_compositor *ec = es->compositor;
 431         GLfloat *v, inv_width, inv_height;
 432         pixman_box32_t *rectangles;
 433         unsigned int *p;
 434         int i, n;
 435
 436         rectangles = pixman_region32_rectangles(region, &n);
 437         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 438         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 439         inv_width = 1.0 / es->pitch;
 440         inv_height = 1.0 / es->height;
 441
 442         for (i = 0; i < n; i++, v += 16, p += 6) {
 443                 v[ 0] = rectangles[i].x1;
 444                 v[ 1] = rectangles[i].y1;
 445                 v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
 446                 v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
 447
 448                 v[ 4] = rectangles[i].x1;
 449                 v[ 5] = rectangles[i].y2;
 450                 v[ 6] = v[ 2];
 451                 v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
 452
 453                 v[ 8] = rectangles[i].x2;
 454                 v[ 9] = rectangles[i].y1;
 455                 v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
 456                 v[11] = v[ 3];
 457
 458                 v[12] = rectangles[i].x2;
 459                 v[13] = rectangles[i].y2;
 460                 v[14] = v[10];
 461                 v[15] = v[ 7];
 462
 463                 p[0] = i * 4 + 0;
 464                 p[1] = i * 4 + 1;
 465                 p[2] = i * 4 + 2;
 466                 p[3] = i * 4 + 2;
 467                 p[4] = i * 4 + 1;
 468                 p[5] = i * 4 + 3;
 469         }
 470
 471         return n;
 472 }
 473
 474 static void
 475 transform_vertex(struct wlsc_surface *surface,
 476                  GLfloat x, GLfloat y, GLfloat u, GLfloat v, GLfloat *r)
 477 {
 478         struct wlsc_vector t;
 479
 480         t.f[0] = x;
 481         t.f[1] = y;
 482         t.f[2] = 0.0;
 483         t.f[3] = 1.0;
 484
 485         wlsc_matrix_transform(&surface->transform->matrix, &t);
 486
 487         r[ 0] = t.f[0];
 488         r[ 1] = t.f[1];
 489         r[ 2] = u;
 490         r[ 3] = v;
 491 }
 492
 493 static int
 494 texture_transformed_surface(struct wlsc_surface *es)
 495 {
 496         struct wlsc_compositor *ec = es->compositor;
 497         GLfloat *v;
 498         unsigned int *p;
 499
 500         v = wl_array_add(&ec->vertices, 16 * sizeof *v);
 501         p = wl_array_add(&ec->indices, 6 * sizeof *p);
 502
 503         transform_vertex(es, es->x, es->y, 0.0, 0.0, &v[0]);
 504         transform_vertex(es, es->x, es->y + es->height, 0.0, 1.0, &v[4]);
 505         transform_vertex(es, es->x + es->width, es->y, 1.0, 0.0, &v[8]);
 506         transform_vertex(es, es->x + es->width, es->y + es->height,
 507                          1.0, 1.0, &v[12]);
 508
 509         p[0] = 0;
 510         p[1] = 1;
 511         p[2] = 2;
 512         p[3] = 2;
 513         p[4] = 1;
 514         p[5] = 3;
 515
 516         return 1;
 517 }
 518
 519 static void
 520 wlsc_surface_draw(struct wlsc_surface *es,
 521                   struct wlsc_output *output, pixman_region32_t *clip)
 522 {
 523         struct wlsc_compositor *ec = es->compositor;
 524         GLfloat *v;
 525         pixman_region32_t repaint;
 526         GLint filter;
 527         int n;
 528
 529         pixman_region32_init_rect(&repaint,
 530                                   es->x, es->y, es->width, es->height);
 531         pixman_region32_intersect(&repaint, &repaint, clip);
 532         if (!pixman_region32_not_empty(&repaint))
 533                 return;
 534
 535         switch (es->visual) {
 536         case WLSC_ARGB_VISUAL:
 537                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 538                 glEnable(GL_BLEND);
 539                 break;
 540         case WLSC_PREMUL_ARGB_VISUAL:
 541                 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 542                 glEnable(GL_BLEND);
 543                 break;
 544         case WLSC_RGB_VISUAL:
 545                 glDisable(GL_BLEND);
 546                 break;
 547         default:
 548                 fprintf(stderr, "bogus visual\n");
 549                 break;
 550         }
 551
 552         if (es->alpha != ec->current_alpha) {
 553                 glUniform1f(ec->texture_shader.alpha_uniform,
 554                             es->alpha / 255.0);
 555                 ec->current_alpha = es->alpha;
 556         }
 557
 558         if (es->transform == NULL) {
 559                 filter = GL_NEAREST;
 560                 n = texture_region(es, &repaint);
 561         } else {
 562                 filter = GL_LINEAR;
 563                 n = texture_transformed_surface(es);
 564         }
 565
 566         glBindTexture(GL_TEXTURE_2D, es->texture);
 567         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
 568         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
 569
 570         v = ec->vertices.data;
 571         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 572         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 573         glEnableVertexAttribArray(0);
 574         glEnableVertexAttribArray(1);
 575         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 576
 577         ec->vertices.size = 0;
 578         ec->indices.size = 0;
 579         pixman_region32_fini(&repaint);
 580 }
 581
 582 static void
 583 wlsc_surface_raise(struct wlsc_surface *surface)
 584 {
 585         struct wlsc_compositor *compositor = surface->compositor;
 586
 587         wl_list_remove(&surface->link);
 588         wl_list_insert(&compositor->surface_list, &surface->link);
 589         wlsc_compositor_repick(compositor);
 590         wlsc_surface_damage(surface);
 591 }
 592
 593 WL_EXPORT void
 594 wlsc_compositor_damage_all(struct wlsc_compositor *compositor)
 595 {
 596         struct wlsc_output *output;
 597
 598         wl_list_for_each(output, &compositor->output_list, link)
 599                 wlsc_output_damage(output);
 600 }
 601
 602 static inline void
 603 wlsc_buffer_post_release(struct wl_buffer *buffer)
 604 {
 605         if (--buffer->busy_count > 0)
 606                 return;
 607
 608         assert(buffer->resource.client != NULL);
 609         wl_resource_queue_event(&buffer->resource, WL_BUFFER_RELEASE);
 610 }
 611
 612 WL_EXPORT void
 613 wlsc_output_damage(struct wlsc_output *output)
 614 {
 615         struct wlsc_compositor *compositor = output->compositor;
 616         struct wlsc_surface *es;
 617
 618         if (wl_list_empty(&compositor->surface_list))
 619                 return;
 620
 621         es = container_of(compositor->surface_list.next,
 622                           struct wlsc_surface, link);
 623         pixman_region32_union(&es->damage, &es->damage, &output->region);
 624         wlsc_compositor_schedule_repaint(compositor);
 625 }
 626
 627 static void
 628 fade_frame(struct wlsc_animation *animation,
 629            struct wlsc_output *output, uint32_t msecs)
 630 {
 631         struct wlsc_compositor *compositor =
 632                 container_of(animation,
 633                              struct wlsc_compositor, fade.animation);
 634
 635         wlsc_spring_update(&compositor->fade.spring, msecs);
 636         if (wlsc_spring_done(&compositor->fade.spring)) {
 637                 compositor->fade.spring.current =
 638                         compositor->fade.spring.target;
 639                 wl_list_remove(&animation->link);
 640                 wl_list_init(&animation->link);
 641
 642                 if (compositor->fade.spring.current > 0.999) {
 643                         compositor->state = WLSC_COMPOSITOR_SLEEPING;
 644                         compositor->shell->lock(compositor->shell);
 645                 }
 646         }
 647
 648         wlsc_output_damage(output);
 649 }
 650
 651 static void
 652 fade_output(struct wlsc_output *output,
 653             GLfloat tint, pixman_region32_t *region)
 654 {
 655         struct wlsc_compositor *compositor = output->compositor;
 656         struct wlsc_surface surface;
 657         GLfloat color[4] = { 0.0, 0.0, 0.0, tint };
 658
 659         surface.compositor = compositor;
 660         surface.x = output->x;
 661         surface.y = output->y;
 662         surface.pitch = output->current->width;
 663         surface.width = output->current->width;
 664         surface.height = output->current->height;
 665         surface.texture = GL_NONE;
 666         surface.transform = NULL;
 667         surface.alpha = compositor->current_alpha;
 668
 669         if (tint <= 1.0)
 670                 surface.visual = WLSC_PREMUL_ARGB_VISUAL;
 671         else
 672                 surface.visual = WLSC_RGB_VISUAL;
 673
 674         glUseProgram(compositor->solid_shader.program);
 675         glUniformMatrix4fv(compositor->solid_shader.proj_uniform,
 676                            1, GL_FALSE, output->matrix.d);
 677         glUniform4fv(compositor->solid_shader.color_uniform, 1, color);
 678         wlsc_surface_draw(&surface, output, region);
 679 }
 680
 681 static void
 682 wlsc_output_set_cursor(struct wlsc_output *output,
 683                        struct wl_input_device *dev, int force_sw)
 684 {
 685         struct wlsc_compositor *ec = output->compositor;
 686         struct wlsc_input_device *device = (struct wlsc_input_device *) dev;
 687         pixman_region32_t cursor_region;
 688         int use_hardware_cursor = 1, prior_was_hardware;
 689
 690         if (device->sprite == NULL)
 691                 return;
 692
 693         pixman_region32_init_rect(&cursor_region,
 694                                   device->sprite->x, device->sprite->y,
 695                                   device->sprite->width,
 696                                   device->sprite->height);
 697
 698         pixman_region32_intersect(&cursor_region, &cursor_region, &output->region);
 699
 700         if (!pixman_region32_not_empty(&cursor_region)) {
 701                 output->set_hardware_cursor(output, NULL);
 702                 goto out;
 703         }
 704
 705         prior_was_hardware = wl_list_empty(&device->sprite->link);
 706         if (force_sw || output->set_hardware_cursor(output, device) < 0) {
 707                 if (prior_was_hardware) {
 708                         wlsc_surface_damage(device->sprite);
 709                         output->set_hardware_cursor(output, NULL);
 710                 }
 711                 use_hardware_cursor = 0;
 712         } else if (!prior_was_hardware) {
 713                 wlsc_surface_damage_below(device->sprite);
 714         }
 715
 716         /* Remove always to be on top. */
 717         wl_list_remove(&device->sprite->link);
 718         if (!use_hardware_cursor && ec->focus) {
 719                 wl_list_insert(&ec->surface_list, &device->sprite->link);
 720                 device->sprite->output = output;
 721         } else {
 722                 wl_list_init(&device->sprite->link);
 723                 device->sprite->output = NULL;
 724         }
 725
 726 out:
 727         pixman_region32_fini(&cursor_region);
 728 }
 729
 730 static int
 731 setup_scanout_surface(struct wlsc_output *output, struct wlsc_surface *es)
 732 {
 733         if (es->visual != WLSC_RGB_VISUAL ||
 734             output->prepare_scanout_surface(output, es) != 0)
 735                 return -1;
 736
 737         /* assert output->pending_scanout_buffer == NULL */
 738         output->pending_scanout_buffer = es->buffer;
 739         output->pending_scanout_buffer->busy_count++;
 740
 741         wl_list_insert(output->pending_scanout_buffer->resource.destroy_listener_list.prev,
 742                        &output->pending_scanout_buffer_destroy_listener.link);
 743
 744         return 0;
 745 }
 746
 747 static void
 748 wlsc_output_repaint(struct wlsc_output *output)
 749 {
 750         struct wlsc_compositor *ec = output->compositor;
 751         struct wlsc_surface *es;
 752         pixman_region32_t opaque, new_damage, total_damage, repaint;
 753
 754         output->prepare_render(output);
 755
 756         glViewport(0, 0, output->current->width, output->current->height);
 757
 758         glUseProgram(ec->texture_shader.program);
 759         glUniformMatrix4fv(ec->texture_shader.proj_uniform,
 760                            1, GL_FALSE, output->matrix.d);
 761         glUniform1i(ec->texture_shader.tex_uniform, 0);
 762
 763         wlsc_output_set_cursor(output, ec->input_device,
 764                                ec->fade.spring.current >= 0.001);
 765
 766         pixman_region32_init(&new_damage);
 767         pixman_region32_init(&opaque);
 768
 769         wl_list_for_each(es, &ec->surface_list, link) {
 770                 pixman_region32_subtract(&es->damage, &es->damage, &opaque);
 771                 pixman_region32_union(&new_damage, &new_damage, &es->damage);
 772                 pixman_region32_union(&opaque, &opaque, &es->opaque);
 773         }
 774
 775         pixman_region32_init(&total_damage);
 776         pixman_region32_union(&total_damage, &new_damage,
 777                               &output->previous_damage);
 778         pixman_region32_intersect(&output->previous_damage,
 779                                   &new_damage, &output->region);
 780
 781         pixman_region32_fini(&opaque);
 782         pixman_region32_fini(&new_damage);
 783
 784         es = container_of(ec->surface_list.next, struct wlsc_surface, link);
 785
 786         if (setup_scanout_surface(output, es) == 0)
 787                 /* We're drawing nothing, just let the damage accumulate */
 788                 return;
 789
 790         if (es->fullscreen_output == output) {
 791                 if (es->width < output->current->width ||
 792                     es->height < output->current->height)
 793                         glClear(GL_COLOR_BUFFER_BIT);
 794                 wlsc_surface_draw(es, output, &total_damage);
 795         } else {
 796                 wl_list_for_each(es, &ec->surface_list, link) {
 797                         pixman_region32_copy(&es->damage, &total_damage);
 798                         pixman_region32_subtract(&total_damage, &total_damage, &es->opaque);
 799                 }
 800
 801                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 802                         pixman_region32_init(&repaint);
 803                         pixman_region32_intersect(&repaint, &output->region,
 804                                                   &es->damage);
 805                         wlsc_surface_draw(es, output, &repaint);
 806                         pixman_region32_subtract(&es->damage,
 807                                                  &es->damage, &output->region);
 808                 }
 809         }
 810
 811         if (ec->fade.spring.current > 0.001)
 812                 fade_output(output, ec->fade.spring.current, &total_damage);
 813 }
 814
 815 struct wlsc_frame_callback {
 816         struct wl_resource resource;
 817         struct wl_list link;
 818 };
 819
 820 static void
 821 repaint(void *data, int msecs)
 822 {
 823         struct wlsc_output *output = data;
 824         struct wlsc_compositor *compositor = output->compositor;
 825         struct wlsc_animation *animation, *next;
 826         struct wlsc_frame_callback *cb, *cnext;
 827
 828         wlsc_output_repaint(output);
 829         output->repaint_needed = 0;
 830         output->repaint_scheduled = 1;
 831         output->present(output);
 832
 833         wl_list_for_each_safe(cb, cnext, &output->frame_callback_list, link) {
 834                 wl_resource_post_event(&cb->resource, WL_CALLBACK_DONE, msecs);
 835                 wl_resource_destroy(&cb->resource, 0);
 836         }
 837
 838         wl_list_for_each_safe(animation, next,
 839                               &compositor->animation_list, link)
 840                 animation->frame(animation, output, msecs);
 841 }
 842
 843 static void
 844 idle_repaint(void *data)
 845 {
 846         repaint(data, wlsc_compositor_get_time());
 847 }
 848
 849 WL_EXPORT void
 850 wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
 851 {
 852         if (output->scanout_buffer) {
 853                 wlsc_buffer_post_release(output->scanout_buffer);
 854                 wl_list_remove(&output->scanout_buffer_destroy_listener.link);
 855                 output->scanout_buffer = NULL;
 856         }
 857
 858         if (output->pending_scanout_buffer) {
 859                 output->scanout_buffer = output->pending_scanout_buffer;
 860                 wl_list_remove(&output->pending_scanout_buffer_destroy_listener.link);
 861                 wl_list_insert(output->scanout_buffer->resource.destroy_listener_list.prev,
 862                                &output->scanout_buffer_destroy_listener.link);
 863                 output->pending_scanout_buffer = NULL;
 864         }
 865
 866         if (output->repaint_needed)
 867                 repaint(output, msecs);
 868         else
 869                 output->repaint_scheduled = 0;
 870 }
 871
 872 WL_EXPORT void
 873 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 874 {
 875         struct wlsc_output *output;
 876         struct wl_event_loop *loop;
 877
 878         if (compositor->state == WLSC_COMPOSITOR_SLEEPING)
 879                 return;
 880
 881         loop = wl_display_get_event_loop(compositor->wl_display);
 882         wl_list_for_each(output, &compositor->output_list, link) {
 883                 output->repaint_needed = 1;
 884                 if (output->repaint_scheduled)
 885                         continue;
 886
 887                 wl_event_loop_add_idle(loop, idle_repaint, output);
 888                 output->repaint_scheduled = 1;
 889         }
 890 }
 891
 892 WL_EXPORT void
 893 wlsc_compositor_fade(struct wlsc_compositor *compositor, float tint)
 894 {
 895         int done;
 896
 897         done = wlsc_spring_done(&compositor->fade.spring);
 898         compositor->fade.spring.target = tint;
 899         if (wlsc_spring_done(&compositor->fade.spring))
 900                 return;
 901
 902         if (done)
 903                 compositor->fade.spring.timestamp =
 904                         wlsc_compositor_get_time();
 905
 906         wlsc_compositor_damage_all(compositor);
 907         if (wl_list_empty(&compositor->fade.animation.link))
 908                 wl_list_insert(compositor->animation_list.prev,
 909                                &compositor->fade.animation.link);
 910 }
 911
 912 static void
 913 surface_destroy(struct wl_client *client, struct wl_resource *resource)
 914 {
 915         wl_resource_destroy(resource, wlsc_compositor_get_time());
 916 }
 917
 918 WL_EXPORT void
 919 wlsc_surface_assign_output(struct wlsc_surface *es)
 920 {
 921         struct wlsc_compositor *ec = es->compositor;
 922         struct wlsc_output *output, *new_output;
 923         pixman_region32_t region;
 924         uint32_t max, area;
 925         pixman_box32_t *e;
 926
 927         new_output = NULL;
 928         max = 0;
 929         wl_list_for_each(output, &ec->output_list, link) {
 930                 pixman_region32_init_rect(&region,
 931                                           es->x, es->y, es->width, es->height);
 932                 pixman_region32_intersect(&region, &region, &output->region);
 933
 934                 e = pixman_region32_extents(&region);
 935                 area = (e->x2 - e->x1) * (e->y2 - e->y1);
 936
 937                 if (area >= max) {
 938                         new_output = output;
 939                         max = area;
 940                 }
 941         }
 942
 943         es->output = new_output;
 944         if (!wl_list_empty(&es->frame_callback_list)) {
 945                 wl_list_insert_list(new_output->frame_callback_list.prev,
 946                                     &es->frame_callback_list);
 947                 wl_list_init(&es->frame_callback_list);
 948         }
 949 }
 950
 951 static void
 952 surface_attach(struct wl_client *client,
 953                struct wl_resource *resource,
 954                struct wl_resource *buffer_resource, int32_t x, int32_t y)
 955 {
 956         struct wlsc_surface *es = resource->data;
 957         struct wlsc_shell *shell = es->compositor->shell;
 958         struct wl_buffer *buffer = buffer_resource->data;
 959
 960         if (es->buffer) {
 961                 wlsc_buffer_post_release(es->buffer);
 962                 wl_list_remove(&es->buffer_destroy_listener.link);
 963         }
 964
 965         buffer->busy_count++;
 966         es->buffer = buffer;
 967         wl_list_insert(es->buffer->resource.destroy_listener_list.prev,
 968                        &es->buffer_destroy_listener.link);
 969
 970         if (es->visual == WLSC_NONE_VISUAL) {
 971                 shell->map(shell, es, buffer->width, buffer->height);
 972         } else if (x != 0 || y != 0 ||
 973                    es->width != buffer->width ||
 974                    es->height != buffer->height) {
 975                 shell->configure(shell, es, es->x + x, es->y + y,
 976                                  buffer->width, buffer->height);
 977         }
 978
 979         wlsc_buffer_attach(buffer, &es->surface);
 980 }
 981
 982 static void
 983 surface_damage(struct wl_client *client,
 984                struct wl_resource *resource,
 985                int32_t x, int32_t y, int32_t width, int32_t height)
 986 {
 987         struct wlsc_surface *es = resource->data;
 988
 989         wlsc_surface_damage_rectangle(es, x, y, width, height);
 990 }
 991
 992 static void
 993 destroy_frame_callback(struct wl_resource *resource)
 994 {
 995         struct wlsc_frame_callback *cb = resource->data;
 996
 997         wl_list_remove(&cb->link);
 998         free(cb);
 999 }
1000
1001 static void
1002 surface_frame(struct wl_client *client,
1003               struct wl_resource *resource, uint32_t callback)
1004 {
1005         struct wlsc_frame_callback *cb;
1006         struct wlsc_surface *es = resource->data;
1007
1008         cb = malloc(sizeof *cb);
1009         if (cb == NULL) {
1010                 wl_resource_post_no_memory(resource);
1011                 return;
1012         }
1013
1014         cb->resource.object.interface = &wl_callback_interface;
1015         cb->resource.object.id = callback;
1016         cb->resource.destroy = destroy_frame_callback;
1017         cb->resource.client = client;
1018         cb->resource.data = cb;
1019
1020         wl_client_add_resource(client, &cb->resource);
1021
1022         if (es->output) {
1023                 wl_list_insert(es->output->frame_callback_list.prev,
1024                                &cb->link);
1025         } else {
1026                 wl_list_insert(es->frame_callback_list.prev, &cb->link);
1027         }
1028 }
1029
1030 const static struct wl_surface_interface surface_interface = {
1031         surface_destroy,
1032         surface_attach,
1033         surface_damage,
1034         surface_frame
1035 };
1036
1037 static void
1038 compositor_create_surface(struct wl_client *client,
1039                           struct wl_resource *resource, uint32_t id)
1040 {
1041         struct wlsc_compositor *ec = resource->data;
1042         struct wlsc_surface *surface;
1043
1044         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
1045         if (surface == NULL) {
1046                 wl_resource_post_no_memory(resource);
1047                 return;
1048         }
1049
1050         surface->surface.resource.destroy = destroy_surface;
1051
1052         surface->surface.resource.object.id = id;
1053         surface->surface.resource.object.interface = &wl_surface_interface;
1054         surface->surface.resource.object.implementation =
1055                 (void (**)(void)) &surface_interface;
1056         surface->surface.resource.data = surface;
1057
1058         wl_client_add_resource(client, &surface->surface.resource);
1059 }
1060
1061 const static struct wl_compositor_interface compositor_interface = {
1062         compositor_create_surface,
1063 };
1064
1065 static void
1066 wlsc_surface_transform(struct wlsc_surface *surface,
1067                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
1068 {
1069         *sx = x - surface->x;
1070         *sy = y - surface->y;
1071 }
1072
1073 static struct wlsc_surface *
1074 wlsc_compositor_pick_surface(struct wlsc_compositor *compositor,
1075                              int32_t x, int32_t y, int32_t *sx, int32_t *sy)
1076 {
1077         struct wlsc_surface *surface;
1078
1079         wl_list_for_each(surface, &compositor->surface_list, link) {
1080                 if (surface->surface.resource.client == NULL)
1081                         continue;
1082                 wlsc_surface_transform(surface, x, y, sx, sy);
1083                 if (0 <= *sx && *sx < surface->width &&
1084                     0 <= *sy && *sy < surface->height)
1085                         return surface;
1086         }
1087
1088         return NULL;
1089 }
1090
1091 WL_EXPORT struct wlsc_surface *
1092 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
1093 {
1094         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1095
1096         return wlsc_compositor_pick_surface(wd->compositor,
1097                                             device->x, device->y, sx, sy);
1098 }
1099
1100
1101 static void
1102 implicit_grab_motion(struct wl_grab *grab,
1103                      uint32_t time, int32_t x, int32_t y)
1104 {
1105         struct wlsc_input_device *device =
1106                 (struct wlsc_input_device *) grab->input_device;
1107         struct wlsc_surface *es =
1108                 (struct wlsc_surface *) device->input_device.pointer_focus;
1109         int32_t sx, sy;
1110         struct wl_resource *resource;
1111
1112         resource = grab->input_device->pointer_focus_resource;
1113         if (resource) {
1114                 wlsc_surface_transform(es, x, y, &sx, &sy);
1115                 wl_resource_post_event(resource, WL_INPUT_DEVICE_MOTION,
1116                                        time, x, y, sx, sy);
1117         }
1118 }
1119
1120 static void
1121 implicit_grab_button(struct wl_grab *grab,
1122                      uint32_t time, int32_t button, int32_t state)
1123 {
1124         struct wl_resource *resource;
1125
1126         resource = grab->input_device->pointer_focus_resource;
1127         if (resource)
1128                 wl_resource_post_event(resource, WL_INPUT_DEVICE_BUTTON,
1129                                        time, button, state);
1130 }
1131
1132 static void
1133 implicit_grab_end(struct wl_grab *grab, uint32_t time)
1134 {
1135 }
1136
1137 static const struct wl_grab_interface implicit_grab_interface = {
1138         implicit_grab_motion,
1139         implicit_grab_button,
1140         implicit_grab_end
1141 };
1142
1143 WL_EXPORT void
1144 wlsc_compositor_wake(struct wlsc_compositor *compositor)
1145 {
1146         compositor->state = WLSC_COMPOSITOR_ACTIVE;
1147         wlsc_compositor_fade(compositor, 0.0);
1148
1149         wl_event_source_timer_update(compositor->idle_source,
1150                                      compositor->idle_time * 1000);
1151 }
1152
1153 WL_EXPORT void
1154 wlsc_compositor_activity(struct wlsc_compositor *compositor)
1155 {
1156         if (compositor->state == WLSC_COMPOSITOR_ACTIVE) {
1157                 wlsc_compositor_wake(compositor);
1158         } else {
1159                 compositor->shell->unlock(compositor->shell);
1160         }
1161 }
1162
1163 static void
1164 wlsc_compositor_idle_inhibit(struct wlsc_compositor *compositor)
1165 {
1166         wlsc_compositor_activity(compositor);
1167         compositor->idle_inhibit++;
1168 }
1169
1170 static void
1171 wlsc_compositor_idle_release(struct wlsc_compositor *compositor)
1172 {
1173         compositor->idle_inhibit--;
1174         wlsc_compositor_activity(compositor);
1175 }
1176
1177 static int
1178 idle_handler(void *data)
1179 {
1180         struct wlsc_compositor *compositor = data;
1181
1182         if (compositor->idle_inhibit)
1183                 return 1;
1184
1185         wlsc_compositor_fade(compositor, 1.0);
1186
1187         return 1;
1188 }
1189
1190 WL_EXPORT void
1191 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1192 {
1193         struct wlsc_surface *es;
1194         struct wlsc_output *output;
1195         const struct wl_grab_interface *interface;
1196         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1197         struct wlsc_compositor *ec = wd->compositor;
1198         int32_t sx, sy;
1199         int x_valid = 0, y_valid = 0;
1200         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1201
1202         wlsc_compositor_activity(ec);
1203
1204         wl_list_for_each(output, &ec->output_list, link) {
1205                 if (output->x <= x && x <= output->x + output->current->width)
1206                         x_valid = 1;
1207
1208                 if (output->y <= y && y <= output->y + output->current->height)
1209                         y_valid = 1;
1210
1211                 /* FIXME: calculate this only on output addition/deletion */
1212                 if (output->x < min_x)
1213                         min_x = output->x;
1214                 if (output->y < min_y)
1215                         min_y = output->y;
1216
1217                 if (output->x + output->current->width > max_x)
1218                         max_x = output->x + output->current->width;
1219                 if (output->y + output->current->height > max_y)
1220                         max_y = output->y + output->current->height;
1221         }
1222
1223         if (!x_valid) {
1224                 if (x < min_x)
1225                         x = min_x;
1226                 else if (x >= max_x)
1227                         x = max_x;
1228         }
1229         if (!y_valid) {
1230                 if (y < min_y)
1231                         y = min_y;
1232                 else  if (y >= max_y)
1233                         y = max_y;
1234         }
1235
1236         device->x = x;
1237         device->y = y;
1238
1239         if (device->grab) {
1240                 interface = device->grab->interface;
1241                 interface->motion(device->grab, time, x, y);
1242         } else {
1243                 es = pick_surface(device, &sx, &sy);
1244                 wl_input_device_set_pointer_focus(device,
1245                                                   &es->surface,
1246                                                   time, x, y, sx, sy);
1247                 if (device->pointer_focus_resource)
1248                         wl_resource_post_event(device->pointer_focus_resource,
1249                                                WL_INPUT_DEVICE_MOTION,
1250                                                time, x, y, sx, sy);
1251         }
1252
1253         if (wd->sprite) {
1254                 wlsc_surface_damage_below(wd->sprite);
1255
1256                 wd->sprite->x = device->x - wd->hotspot_x;
1257                 wd->sprite->y = device->y - wd->hotspot_y;
1258
1259                 wlsc_surface_damage(wd->sprite);
1260         }
1261 }
1262
1263 WL_EXPORT void
1264 wlsc_surface_activate(struct wlsc_surface *surface,
1265                       struct wlsc_input_device *device, uint32_t time)
1266 {
1267         wlsc_surface_raise(surface);
1268         wl_input_device_set_keyboard_focus(&device->input_device,
1269                                            &surface->surface, time);
1270         wlsc_data_device_set_keyboard_focus(device);
1271 }
1272
1273 WL_EXPORT void
1274 notify_button(struct wl_input_device *device,
1275               uint32_t time, int32_t button, int32_t state)
1276 {
1277         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1278         struct wlsc_compositor *compositor = wd->compositor;
1279         struct wlsc_surface *surface =
1280                 (struct wlsc_surface *) device->pointer_focus;
1281         int32_t sx, sy;
1282
1283         if (state)
1284                 wlsc_compositor_idle_inhibit(compositor);
1285         else
1286                 wlsc_compositor_idle_release(compositor);
1287
1288         wlsc_compositor_run_binding(compositor, wd, time, 0, button, state);
1289
1290         if (state && surface && device->grab == NULL) {
1291                 wl_input_device_start_grab(device,
1292                                            &device->implicit_grab,
1293                                            button, time);
1294         }
1295
1296         if (device->grab)
1297                 device->grab->interface->button(device->grab, time,
1298                                                 button, state);
1299
1300         if (!state && device->grab && device->grab_button == button) {
1301                 wl_input_device_end_grab(device, time);
1302                 surface = pick_surface(device, &sx, &sy);
1303                 wl_input_device_set_pointer_focus(device, &surface->surface,
1304                                                   time, device->x, device->y,
1305                                                   sx, sy);
1306         }
1307 }
1308
1309 static void
1310 update_modifier_state(struct wlsc_input_device *device,
1311                       uint32_t key, uint32_t state)
1312 {
1313         uint32_t modifier;
1314
1315         switch (key) {
1316         case KEY_LEFTCTRL:
1317         case KEY_RIGHTCTRL:
1318                 modifier = MODIFIER_CTRL;
1319                 break;
1320
1321         case KEY_LEFTALT:
1322         case KEY_RIGHTALT:
1323                 modifier = MODIFIER_ALT;
1324                 break;
1325
1326         case KEY_LEFTMETA:
1327         case KEY_RIGHTMETA:
1328                 modifier = MODIFIER_SUPER;
1329                 break;
1330
1331         default:
1332                 modifier = 0;
1333                 break;
1334         }
1335
1336         if (state)
1337                 device->modifier_state |= modifier;
1338         else
1339                 device->modifier_state &= ~modifier;
1340 }
1341
1342 WL_EXPORT void
1343 notify_key(struct wl_input_device *device,
1344            uint32_t time, uint32_t key, uint32_t state)
1345 {
1346         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1347         struct wlsc_compositor *compositor = wd->compositor;
1348         uint32_t *k, *end;
1349
1350         if (state)
1351                 wlsc_compositor_idle_inhibit(compositor);
1352         else
1353                 wlsc_compositor_idle_release(compositor);
1354
1355         wlsc_compositor_run_binding(compositor, wd, time, key, 0, state);
1356
1357         update_modifier_state(wd, key, state);
1358         end = device->keys.data + device->keys.size;
1359         for (k = device->keys.data; k < end; k++) {
1360                 if (*k == key)
1361                         *k = *--end;
1362         }
1363         device->keys.size = (void *) end - device->keys.data;
1364         if (state) {
1365                 k = wl_array_add(&device->keys, sizeof *k);
1366                 *k = key;
1367         }
1368
1369         if (device->keyboard_focus_resource)
1370                 wl_resource_post_event(device->keyboard_focus_resource,
1371                                        WL_INPUT_DEVICE_KEY, time, key, state);
1372 }
1373
1374 WL_EXPORT void
1375 notify_pointer_focus(struct wl_input_device *device,
1376                      uint32_t time, struct wlsc_output *output,
1377                      int32_t x, int32_t y)
1378 {
1379         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1380         struct wlsc_compositor *compositor = wd->compositor;
1381         struct wlsc_surface *es;
1382         int32_t sx, sy;
1383
1384         if (output) {
1385                 device->x = x;
1386                 device->y = y;
1387                 es = pick_surface(device, &sx, &sy);
1388                 wl_input_device_set_pointer_focus(device,
1389                                                   &es->surface,
1390                                                   time, x, y, sx, sy);
1391
1392                 compositor->focus = 1;
1393         } else {
1394                 wl_input_device_set_pointer_focus(device, NULL,
1395                                                   time, 0, 0, 0, 0);
1396                 compositor->focus = 0;
1397         }
1398 }
1399
1400 WL_EXPORT void
1401 notify_keyboard_focus(struct wl_input_device *device,
1402                       uint32_t time, struct wlsc_output *output,
1403                       struct wl_array *keys)
1404 {
1405         struct wlsc_input_device *wd =
1406                 (struct wlsc_input_device *) device;
1407         struct wlsc_compositor *compositor = wd->compositor;
1408         struct wlsc_surface *es;
1409         uint32_t *k, *end;
1410
1411         if (!wl_list_empty(&compositor->surface_list))
1412                 es = container_of(compositor->surface_list.next,
1413                                   struct wlsc_surface, link);
1414         else
1415                 es = NULL;
1416
1417         if (output) {
1418                 wl_array_copy(&wd->input_device.keys, keys);
1419                 wd->modifier_state = 0;
1420                 end = device->keys.data + device->keys.size;
1421                 for (k = device->keys.data; k < end; k++) {
1422                         wlsc_compositor_idle_inhibit(compositor);
1423                         update_modifier_state(wd, *k, 1);
1424                 }
1425
1426                 if (es && es->surface.resource.client)
1427                         wl_input_device_set_keyboard_focus(&wd->input_device,
1428                                                            &es->surface, time);
1429         } else {
1430                 end = device->keys.data + device->keys.size;
1431                 for (k = device->keys.data; k < end; k++)
1432                         wlsc_compositor_idle_release(compositor);
1433
1434                 wd->modifier_state = 0;
1435                 wl_input_device_set_keyboard_focus(&wd->input_device,
1436                                                    NULL, time);
1437         }
1438 }
1439
1440 /* TODO: share this function with wayland-server.c */
1441 static struct wl_resource *
1442 find_resource_for_surface(struct wl_list *list, struct wl_surface *surface)
1443 {
1444         struct wl_resource *r;
1445
1446         if (!surface)
1447                 return NULL;
1448
1449         wl_list_for_each(r, list, link) {
1450                 if (r->client == surface->resource.client)
1451                         return r;
1452         }
1453
1454         return NULL;
1455 }
1456
1457 static void
1458 lose_touch_focus_resource(struct wl_listener *listener,
1459                           struct wl_resource *resource, uint32_t time)
1460 {
1461         struct wlsc_input_device *device =
1462                 container_of(listener, struct wlsc_input_device,
1463                              touch_focus_resource_listener);
1464
1465         device->touch_focus_resource = NULL;
1466 }
1467
1468 static void
1469 lose_touch_focus(struct wl_listener *listener,
1470                  struct wl_resource *resource, uint32_t time)
1471 {
1472         struct wlsc_input_device *device =
1473                 container_of(listener, struct wlsc_input_device,
1474                              touch_focus_listener);
1475
1476         device->touch_focus = NULL;
1477 }
1478
1479 static void
1480 touch_set_focus(struct wlsc_input_device *device,
1481                 struct wl_surface *surface, uint32_t time)
1482 {
1483         struct wl_input_device *input_device = &device->input_device;
1484         struct wl_resource *resource;
1485
1486         if (device->touch_focus == surface)
1487                 return;
1488
1489         if (surface) {
1490                 resource =
1491                         find_resource_for_surface(&input_device->resource_list,
1492                                                   surface);
1493                 if (!resource) {
1494                         fprintf(stderr, "couldn't find resource\n");
1495                         return;
1496                 }
1497
1498                 device->touch_focus_resource_listener.func =
1499                         lose_touch_focus_resource;
1500                 wl_list_insert(resource->destroy_listener_list.prev,
1501                                &device->touch_focus_resource_listener.link);
1502                 device->touch_focus_listener.func = lose_touch_focus;
1503                 wl_list_insert(surface->resource.destroy_listener_list.prev,
1504                                &device->touch_focus_listener.link);
1505
1506                 device->touch_focus = surface;
1507                 device->touch_focus_resource = resource;
1508         } else {
1509                 if (device->touch_focus)
1510                         wl_list_remove(&device->touch_focus_listener.link);
1511                 if (device->touch_focus_resource)
1512                         wl_list_remove(&device->touch_focus_resource_listener.link);
1513                 device->touch_focus = NULL;
1514                 device->touch_focus_resource = NULL;
1515         }
1516 }
1517
1518 /**
1519  * notify_touch - emulates button touches and notifies surfaces accordingly.
1520  *
1521  * It assumes always the correct cycle sequence until it gets here: touch_down
1522  * → touch_update → ... → touch_update → touch_end. The driver is responsible
1523  * for sending along such order.
1524  *
1525  */
1526 WL_EXPORT void
1527 notify_touch(struct wl_input_device *device, uint32_t time, int touch_id,
1528              int x, int y, int touch_type)
1529 {
1530         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1531         struct wlsc_compositor *ec = wd->compositor;
1532         struct wlsc_surface *es;
1533         int32_t sx, sy;
1534
1535         switch (touch_type) {
1536         case WL_INPUT_DEVICE_TOUCH_DOWN:
1537                 wlsc_compositor_idle_inhibit(ec);
1538
1539                 wd->num_tp++;
1540
1541                 /* the first finger down picks the surface, and all further go
1542                  * to that surface for the remainder of the touch session i.e.
1543                  * until all touch points are up again. */
1544                 if (wd->num_tp == 1) {
1545                         es = wlsc_compositor_pick_surface(ec, x, y, &sx, &sy);
1546                         touch_set_focus(wd, &es->surface, time);
1547                 } else if (wd->touch_focus) {
1548                         es = (struct wlsc_surface *) wd->touch_focus;
1549                         wlsc_surface_transform(es, x, y, &sx, &sy);
1550                 }
1551
1552                 if (wd->touch_focus_resource && wd->touch_focus)
1553                         wl_resource_post_event(wd->touch_focus_resource,
1554                                                touch_type, time,
1555                                                wd->touch_focus,
1556                                                touch_id, sx, sy);
1557                 break;
1558         case WL_INPUT_DEVICE_TOUCH_MOTION:
1559                 es = (struct wlsc_surface *) wd->touch_focus;
1560                 if (!es)
1561                         break;
1562
1563                 wlsc_surface_transform(es, x, y, &sx, &sy);
1564                 if (wd->touch_focus_resource)
1565                         wl_resource_post_event(wd->touch_focus_resource,
1566                                                touch_type, time,
1567                                                touch_id, sx, sy);
1568                 break;
1569         case WL_INPUT_DEVICE_TOUCH_UP:
1570                 wlsc_compositor_idle_release(ec);
1571                 wd->num_tp--;
1572
1573                 if (wd->touch_focus_resource)
1574                         wl_resource_post_event(wd->touch_focus_resource,
1575                                                touch_type, time, touch_id);
1576                 if (wd->num_tp == 0)
1577                         touch_set_focus(wd, NULL, time);
1578                 break;
1579         }
1580 }
1581
1582 static void
1583 input_device_attach(struct wl_client *client,
1584                     struct wl_resource *resource,
1585                     uint32_t time,
1586                     struct wl_resource *buffer_resource, int32_t x, int32_t y)
1587 {
1588         struct wlsc_input_device *device = resource->data;
1589         struct wlsc_compositor *compositor = device->compositor;
1590         struct wl_buffer *buffer;
1591
1592         if (time < device->input_device.pointer_focus_time)
1593                 return;
1594         if (device->input_device.pointer_focus == NULL)
1595                 return;
1596         if (device->input_device.pointer_focus->resource.client != client)
1597                 return;
1598
1599         if (device->sprite)
1600                 wlsc_surface_damage_below(device->sprite);
1601
1602         if (!buffer_resource) {
1603                 destroy_surface(&device->sprite->surface.resource);
1604                 device->sprite = NULL;
1605                 return;
1606         }
1607
1608         if (!device->sprite) {
1609                 device->sprite =
1610                         wlsc_surface_create(compositor,
1611                                             device->input_device.x,
1612                                             device->input_device.y, 32, 32);
1613                 wl_list_init(&device->sprite->link);
1614         }
1615
1616         buffer = buffer_resource->data;
1617         wlsc_buffer_attach(buffer, &device->sprite->surface);
1618
1619         device->hotspot_x = x;
1620         device->hotspot_y = y;
1621         device->sprite->width = buffer->width;
1622         device->sprite->height = buffer->height;
1623         device->sprite->x = device->input_device.x - device->hotspot_x;
1624         device->sprite->y = device->input_device.y - device->hotspot_y;
1625
1626         wlsc_surface_damage(device->sprite);
1627 }
1628
1629 const static struct wl_input_device_interface input_device_interface = {
1630         input_device_attach,
1631 };
1632
1633 static void unbind_input_device(struct wl_resource *resource)
1634 {
1635         wl_list_remove(&resource->link);
1636         free(resource);
1637 }
1638
1639 static void
1640 bind_input_device(struct wl_client *client,
1641                   void *data, uint32_t version, uint32_t id)
1642 {
1643         struct wl_input_device *device = data;
1644         struct wl_resource *resource;
1645
1646         resource = wl_client_add_object(client, &wl_input_device_interface,
1647                                         &input_device_interface, id, data);
1648         wl_list_insert(&device->resource_list, &resource->link);
1649         resource->destroy = unbind_input_device;
1650 }
1651
1652 WL_EXPORT void
1653 wlsc_input_device_init(struct wlsc_input_device *device,
1654                        struct wlsc_compositor *ec)
1655 {
1656         wl_input_device_init(&device->input_device);
1657         wl_list_init(&device->drag_resource_list);
1658
1659         wl_display_add_global(ec->wl_display, &wl_input_device_interface,
1660                               device, bind_input_device);
1661
1662         device->sprite = NULL;
1663
1664         device->compositor = ec;
1665         device->hotspot_x = 16;
1666         device->hotspot_y = 16;
1667         device->modifier_state = 0;
1668         device->num_tp = 0;
1669
1670         device->input_device.implicit_grab.interface = &implicit_grab_interface;
1671
1672         wl_list_insert(ec->input_device_list.prev, &device->link);
1673
1674         device->selection_data_source = NULL;
1675 }
1676
1677 static void
1678 bind_output(struct wl_client *client,
1679             void *data, uint32_t version, uint32_t id)
1680 {
1681         struct wlsc_output *output = data;
1682         struct wlsc_mode *mode;
1683         struct wl_resource *resource;
1684
1685         resource = wl_client_add_object(client,
1686                                         &wl_output_interface, NULL, id, data);
1687
1688         wl_resource_post_event(resource,
1689                                WL_OUTPUT_GEOMETRY,
1690                                output->x,
1691                                output->y,
1692                                output->mm_width,
1693                                output->mm_height,
1694                                output->subpixel,
1695                                output->make, output->model);
1696
1697         wl_list_for_each (mode, &output->mode_list, link) {
1698                 wl_resource_post_event(resource,
1699                                        WL_OUTPUT_MODE,
1700                                        mode->flags,
1701                                        mode->width,
1702                                        mode->height,
1703                                        mode->refresh);
1704         }
1705 }
1706
1707 static const char vertex_shader[] =
1708         "uniform mat4 proj;\n"
1709         "attribute vec2 position;\n"
1710         "attribute vec2 texcoord;\n"
1711         "varying vec2 v_texcoord;\n"
1712         "void main()\n"
1713         "{\n"
1714         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1715         "   v_texcoord = texcoord;\n"
1716         "}\n";
1717
1718 static const char texture_fragment_shader[] =
1719         "precision mediump float;\n"
1720         "varying vec2 v_texcoord;\n"
1721         "uniform sampler2D tex;\n"
1722         "uniform float alpha;\n"
1723         "void main()\n"
1724         "{\n"
1725         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1726         "   gl_FragColor = alpha * gl_FragColor;\n"
1727         "}\n";
1728
1729 static const char solid_fragment_shader[] =
1730         "precision mediump float;\n"
1731         "uniform vec4 color;\n"
1732         "void main()\n"
1733         "{\n"
1734         "   gl_FragColor = color\n;"
1735         "}\n";
1736
1737 static int
1738 compile_shader(GLenum type, const char *source)
1739 {
1740         GLuint s;
1741         char msg[512];
1742         GLint status;
1743
1744         s = glCreateShader(type);
1745         glShaderSource(s, 1, &source, NULL);
1746         glCompileShader(s);
1747         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
1748         if (!status) {
1749                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
1750                 fprintf(stderr, "shader info: %s\n", msg);
1751                 return GL_NONE;
1752         }
1753
1754         return s;
1755 }
1756
1757 static int
1758 wlsc_shader_init(struct wlsc_shader *shader,
1759                  const char *vertex_source, const char *fragment_source)
1760 {
1761         char msg[512];
1762         GLint status;
1763
1764         shader->vertex_shader =
1765                 compile_shader(GL_VERTEX_SHADER, vertex_source);
1766         shader->fragment_shader =
1767                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1768
1769         shader->program = glCreateProgram();
1770         glAttachShader(shader->program, shader->vertex_shader);
1771         glAttachShader(shader->program, shader->fragment_shader);
1772         glBindAttribLocation(shader->program, 0, "position");
1773         glBindAttribLocation(shader->program, 1, "texcoord");
1774
1775         glLinkProgram(shader->program);
1776         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1777         if (!status) {
1778                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1779                 fprintf(stderr, "link info: %s\n", msg);
1780                 return -1;
1781         }
1782
1783         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1784         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
1785         shader->alpha_uniform = glGetUniformLocation(shader->program, "alpha");
1786
1787         return 0;
1788 }
1789
1790 static int
1791 init_solid_shader(struct wlsc_shader *shader,
1792                   GLuint vertex_shader, const char *fragment_source)
1793 {
1794         GLint status;
1795         char msg[512];
1796
1797         shader->vertex_shader = vertex_shader;
1798         shader->fragment_shader =
1799                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1800
1801         shader->program = glCreateProgram();
1802         glAttachShader(shader->program, shader->vertex_shader);
1803         glAttachShader(shader->program, shader->fragment_shader);
1804         glBindAttribLocation(shader->program, 0, "position");
1805         glBindAttribLocation(shader->program, 1, "texcoord");
1806
1807         glLinkProgram(shader->program);
1808         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1809         if (!status) {
1810                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1811                 fprintf(stderr, "link info: %s\n", msg);
1812                 return -1;
1813         }
1814
1815         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1816         shader->color_uniform = glGetUniformLocation(shader->program, "color");
1817
1818         return 0;
1819 }
1820
1821 WL_EXPORT void
1822 wlsc_output_destroy(struct wlsc_output *output)
1823 {
1824         pixman_region32_fini(&output->region);
1825         pixman_region32_fini(&output->previous_damage);
1826 }
1827
1828 WL_EXPORT void
1829 wlsc_output_move(struct wlsc_output *output, int x, int y)
1830 {
1831         int flip;
1832
1833         output->x = x;
1834         output->y = y;
1835
1836         pixman_region32_init(&output->previous_damage);
1837         pixman_region32_init_rect(&output->region, x, y,
1838                                   output->current->width,
1839                                   output->current->height);
1840
1841         wlsc_matrix_init(&output->matrix);
1842         wlsc_matrix_translate(&output->matrix,
1843                               -output->x - output->current->width / 2.0,
1844                               -output->y - output->current->height / 2.0, 0);
1845
1846         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1847         wlsc_matrix_scale(&output->matrix,
1848                           2.0 / output->current->width,
1849                           flip * 2.0 / output->current->height, 1);
1850
1851         wlsc_output_damage(output);
1852 }
1853
1854 WL_EXPORT void
1855 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1856                  int x, int y, int width, int height, uint32_t flags)
1857 {
1858         output->compositor = c;
1859         output->x = x;
1860         output->y = y;
1861         output->mm_width = width;
1862         output->mm_height = height;
1863
1864         output->flags = flags;
1865         wlsc_output_move(output, x, y);
1866
1867         output->scanout_buffer_destroy_listener.func =
1868                 output_handle_scanout_buffer_destroy;
1869         output->pending_scanout_buffer_destroy_listener.func =
1870                 output_handle_pending_scanout_buffer_destroy;
1871
1872         wl_list_init(&output->frame_callback_list);
1873
1874         wl_display_add_global(c->wl_display,
1875                               &wl_output_interface, output, bind_output);
1876 }
1877
1878 static void
1879 shm_buffer_created(struct wl_buffer *buffer)
1880 {
1881         struct wl_list *surfaces_attached_to;
1882
1883         surfaces_attached_to = malloc(sizeof *surfaces_attached_to);
1884         if (!surfaces_attached_to) {
1885                 buffer->user_data = NULL;
1886                 return;
1887         }
1888
1889         wl_list_init(surfaces_attached_to);
1890
1891         buffer->user_data = surfaces_attached_to;
1892 }
1893
1894 static void
1895 shm_buffer_damaged(struct wl_buffer *buffer,
1896                    int32_t x, int32_t y, int32_t width, int32_t height)
1897 {
1898         struct wl_list *surfaces_attached_to = buffer->user_data;
1899         struct wlsc_surface *es;
1900         GLsizei tex_width = wl_shm_buffer_get_stride(buffer) / 4;
1901
1902         wl_list_for_each(es, surfaces_attached_to, buffer_link) {
1903                 glBindTexture(GL_TEXTURE_2D, es->texture);
1904                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1905                              tex_width, buffer->height, 0,
1906                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1907                              wl_shm_buffer_get_data(buffer));
1908                 /* Hmm, should use glTexSubImage2D() here but GLES2 doesn't
1909                  * support any unpack attributes except GL_UNPACK_ALIGNMENT. */
1910         }
1911 }
1912
1913 static void
1914 shm_buffer_destroyed(struct wl_buffer *buffer)
1915 {
1916         struct wl_list *surfaces_attached_to = buffer->user_data;
1917         struct wlsc_surface *es, *next;
1918
1919         wl_list_for_each_safe(es, next, surfaces_attached_to, buffer_link) {
1920                 wl_list_remove(&es->buffer_link);
1921                 wl_list_init(&es->buffer_link);
1922         }
1923
1924         free(surfaces_attached_to);
1925 }
1926
1927 const static struct wl_shm_callbacks shm_callbacks = {
1928         shm_buffer_created,
1929         shm_buffer_damaged,
1930         shm_buffer_destroyed
1931 };
1932
1933 static void
1934 compositor_bind(struct wl_client *client,
1935                 void *data, uint32_t version, uint32_t id)
1936 {
1937         struct wlsc_compositor *compositor = data;
1938
1939         wl_client_add_object(client, &wl_compositor_interface,
1940                              &compositor_interface, id, compositor);
1941 }
1942
1943 WL_EXPORT int
1944 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1945 {
1946         struct wl_event_loop *loop;
1947         const char *extensions;
1948
1949         ec->wl_display = display;
1950
1951         if (!wl_display_add_global(display, &wl_compositor_interface,
1952                                    ec, compositor_bind))
1953                 return -1;
1954
1955         ec->shm = wl_shm_init(display, &shm_callbacks);
1956
1957         ec->image_target_texture_2d =
1958                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
1959         ec->image_target_renderbuffer_storage = (void *)
1960                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
1961         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
1962         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
1963         ec->bind_display =
1964                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
1965         ec->unbind_display =
1966                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
1967
1968         extensions = (const char *) glGetString(GL_EXTENSIONS);
1969         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
1970                 fprintf(stderr,
1971                         "GL_EXT_texture_format_BGRA8888 not available\n");
1972                 return -1;
1973         }
1974
1975         extensions =
1976                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
1977         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
1978                 ec->has_bind_display = 1;
1979         if (ec->has_bind_display)
1980                 ec->bind_display(ec->display, ec->wl_display);
1981
1982         wl_list_init(&ec->surface_list);
1983         wl_list_init(&ec->input_device_list);
1984         wl_list_init(&ec->output_list);
1985         wl_list_init(&ec->binding_list);
1986         wl_list_init(&ec->animation_list);
1987         wlsc_spring_init(&ec->fade.spring, 30.0, 1.0, 1.0);
1988         ec->fade.animation.frame = fade_frame;
1989         wl_list_init(&ec->fade.animation.link);
1990
1991         screenshooter_create(ec);
1992
1993         wlsc_data_device_manager_init(ec);
1994
1995         glActiveTexture(GL_TEXTURE0);
1996
1997         if (wlsc_shader_init(&ec->texture_shader,
1998                              vertex_shader, texture_fragment_shader) < 0)
1999                 return -1;
2000         if (init_solid_shader(&ec->solid_shader,
2001                               ec->texture_shader.vertex_shader,
2002                               solid_fragment_shader) < 0)
2003                 return -1;
2004
2005         loop = wl_display_get_event_loop(ec->wl_display);
2006         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
2007         wl_event_source_timer_update(ec->idle_source, ec->idle_time * 1000);
2008
2009         wlsc_compositor_schedule_repaint(ec);
2010
2011         return 0;
2012 }
2013
2014 WL_EXPORT void
2015 wlsc_compositor_shutdown(struct wlsc_compositor *ec)
2016 {
2017         struct wlsc_output *output, *next;
2018
2019         /* Destroy all outputs associated with this compositor */
2020         wl_list_for_each_safe(output, next, &ec->output_list, link)
2021                 output->destroy(output);
2022 }
2023
2024 static int on_term_signal(int signal_number, void *data)
2025 {
2026         struct wl_display *display = data;
2027
2028         fprintf(stderr, "caught signal %d\n", signal_number);
2029         wl_display_terminate(display);
2030
2031         return 1;
2032 }
2033
2034 static void *
2035 load_module(const char *name, const char *entrypoint, void **handle)
2036 {
2037         char path[PATH_MAX];
2038         void *module, *init;
2039
2040         if (name[0] != '/')
2041                 snprintf(path, sizeof path, MODULEDIR "/%s", name);
2042         else
2043                 snprintf(path, sizeof path, "%s", name);
2044
2045         module = dlopen(path, RTLD_LAZY);
2046         if (!module) {
2047                 fprintf(stderr,
2048                         "failed to load module: %s\n", dlerror());
2049                 return NULL;
2050         }
2051
2052         init = dlsym(module, entrypoint);
2053         if (!init) {
2054                 fprintf(stderr,
2055                         "failed to lookup init function: %s\n", dlerror());
2056                 return NULL;
2057         }
2058
2059         return init;
2060 }
2061
2062 int main(int argc, char *argv[])
2063 {
2064         struct wl_display *display;
2065         struct wlsc_compositor *ec;
2066         struct wl_event_loop *loop;
2067         int o, xserver = 0;
2068         void *shell_module, *backend_module;
2069         int (*shell_init)(struct wlsc_compositor *ec);
2070         struct wlsc_compositor
2071                 *(*backend_init)(struct wl_display *display, char *options);
2072         char *backend = NULL;
2073         char *backend_options = "";
2074         char *shell = NULL;
2075         char *p;
2076         int option_idle_time = 300;
2077
2078         static const char opts[] = "B:b:o:S:i:s:x";
2079         static const struct option longopts[ ] = {
2080                 { "backend", 1, NULL, 'B' },
2081                 { "backend-options", 1, NULL, 'o' },
2082                 { "socket", 1, NULL, 'S' },
2083                 { "idle-time", 1, NULL, 'i' },
2084                 { "shell", 1, NULL, 's' },
2085                 { "xserver", 0, NULL, 'x' },
2086                 { NULL, }
2087         };
2088
2089         while (o = getopt_long(argc, argv, opts, longopts, &o), o > 0) {
2090                 switch (o) {
2091                 case 'B':
2092                         backend = optarg;
2093                         break;
2094                 case 'o':
2095                         backend_options = optarg;
2096                         break;
2097                 case 'S':
2098                         option_socket_name = optarg;
2099                         break;
2100                 case 'i':
2101                         option_idle_time = strtol(optarg, &p, 0);
2102                         if (*p != '\0') {
2103                                 fprintf(stderr,
2104                                         "invalid idle time option: %s\n",
2105                                         optarg);
2106                                 exit(EXIT_FAILURE);
2107                         }
2108                         break;
2109                 case 's':
2110                         shell = optarg;
2111                         break;
2112                 case 'x':
2113                         xserver = 1;
2114                         break;
2115                 }
2116         }
2117
2118         display = wl_display_create();
2119
2120         loop = wl_display_get_event_loop(display);
2121         wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, display);
2122         wl_event_loop_add_signal(loop, SIGINT, on_term_signal, display);
2123         wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal, display);
2124
2125         wl_list_init(&child_process_list);
2126         wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler, NULL);
2127
2128         if (!backend) {
2129                 if (getenv("WAYLAND_DISPLAY"))
2130                         backend = "wayland-backend.so";
2131                 else if (getenv("DISPLAY"))
2132                         backend = "x11-backend.so";
2133                 else if (getenv("OPENWFD"))
2134                         backend = "openwfd-backend.so";
2135                 else
2136                         backend = "drm-backend.so";
2137         }
2138
2139         if (!shell)
2140                 shell = "desktop-shell.so";
2141
2142         backend_init = load_module(backend, "backend_init", &backend_module);
2143         if (!backend_init)
2144                 exit(EXIT_FAILURE);
2145
2146         shell_init = load_module(shell, "shell_init", &shell_module);
2147         if (!shell_init)
2148                 exit(EXIT_FAILURE);
2149
2150         ec = backend_init(display, backend_options);
2151         if (ec == NULL) {
2152                 fprintf(stderr, "failed to create compositor\n");
2153                 exit(EXIT_FAILURE);
2154         }
2155
2156         ec->option_idle_time = option_idle_time;
2157         ec->idle_time = option_idle_time;
2158
2159         if (shell_init(ec) < 0)
2160                 exit(EXIT_FAILURE);
2161
2162         if (xserver)
2163                 wlsc_xserver_init(ec);
2164
2165         if (wl_display_add_socket(display, option_socket_name)) {
2166                 fprintf(stderr, "failed to add socket: %m\n");
2167                 exit(EXIT_FAILURE);
2168         }
2169
2170         wl_display_run(display);
2171
2172         if (xserver)
2173                 wlsc_xserver_destroy(ec);
2174
2175         if (ec->has_bind_display)
2176                 ec->unbind_display(ec->display, display);
2177
2178         ec->destroy(ec);
2179         wl_display_destroy(display);
2180
2181         return 0;
2182 }