compositor/compositor.c

   1 /*
   2  * Copyright © 2008 Kristian Høgsberg
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18
  19 #define _GNU_SOURCE
  20
  21 #include "config.h"
  22
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <stdlib.h>
  26 #include <stdint.h>
  27 #include <limits.h>
  28 #include <stdarg.h>
  29 #include <assert.h>
  30 #include <sys/ioctl.h>
  31 #include <sys/wait.h>
  32 #include <fcntl.h>
  33 #include <unistd.h>
  34 #include <math.h>
  35 #include <linux/input.h>
  36 #include <dlfcn.h>
  37 #include <getopt.h>
  38 #include <signal.h>
  39
  40 #include "wayland-server.h"
  41 #include "compositor.h"
  42
  43 /* The plan here is to generate a random anonymous socket name and
  44  * advertise that through a service on the session dbus.
  45  */
  46 static const char *option_socket_name = NULL;
  47 static const char *option_background = "background.png";
  48 static int option_idle_time = 300;
  49
  50 static struct wl_list child_process_list;
  51
  52 static int
  53 sigchld_handler(int signal_number, void *data)
  54 {
  55         struct wlsc_process *p;
  56         int status;
  57         pid_t pid;
  58
  59         pid = wait(&status);
  60         wl_list_for_each(p, &child_process_list, link) {
  61                 if (p->pid == pid)
  62                         break;
  63         }
  64
  65         if (&p->link == &child_process_list) {
  66                 fprintf(stderr, "unknown child process exited\n");
  67                 return 1;
  68         }
  69
  70         wl_list_remove(&p->link);
  71         p->cleanup(p, status);
  72
  73         return 1;
  74 }
  75
  76 WL_EXPORT void
  77 wlsc_watch_process(struct wlsc_process *process)
  78 {
  79         wl_list_insert(&child_process_list, &process->link);
  80 }
  81
  82 WL_EXPORT void
  83 wlsc_matrix_init(struct wlsc_matrix *matrix)
  84 {
  85         static const struct wlsc_matrix identity = {
  86                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  0, 0, 0, 1 }
  87         };
  88
  89         memcpy(matrix, &identity, sizeof identity);
  90 }
  91
  92 static void
  93 wlsc_matrix_multiply(struct wlsc_matrix *m, const struct wlsc_matrix *n)
  94 {
  95         struct wlsc_matrix tmp;
  96         const GLfloat *row, *column;
  97         div_t d;
  98         int i, j;
  99
 100         for (i = 0; i < 16; i++) {
 101                 tmp.d[i] = 0;
 102                 d = div(i, 4);
 103                 row = m->d + d.quot * 4;
 104                 column = n->d + d.rem;
 105                 for (j = 0; j < 4; j++)
 106                         tmp.d[i] += row[j] * column[j * 4];
 107         }
 108         memcpy(m, &tmp, sizeof tmp);
 109 }
 110
 111 WL_EXPORT void
 112 wlsc_matrix_translate(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
 113 {
 114         struct wlsc_matrix translate = {
 115                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  x, y, z, 1 }
 116         };
 117
 118         wlsc_matrix_multiply(matrix, &translate);
 119 }
 120
 121 WL_EXPORT void
 122 wlsc_matrix_scale(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
 123 {
 124         struct wlsc_matrix scale = {
 125                 { x, 0, 0, 0,  0, y, 0, 0,  0, 0, z, 0,  0, 0, 0, 1 }
 126         };
 127
 128         wlsc_matrix_multiply(matrix, &scale);
 129 }
 130
 131 static void
 132 wlsc_matrix_transform(struct wlsc_matrix *matrix, struct wlsc_vector *v)
 133 {
 134         int i, j;
 135         struct wlsc_vector t;
 136
 137         for (i = 0; i < 4; i++) {
 138                 t.f[i] = 0;
 139                 for (j = 0; j < 4; j++)
 140                         t.f[i] += v->f[j] * matrix->d[i + j * 4];
 141         }
 142
 143         *v = t;
 144 }
 145
 146 WL_EXPORT void
 147 wlsc_spring_init(struct wlsc_spring *spring,
 148                  double k, double current, double target)
 149 {
 150         spring->k = k;
 151         spring->friction = 100.0;
 152         spring->current = current;
 153         spring->previous = current;
 154         spring->target = target;
 155 }
 156
 157 WL_EXPORT void
 158 wlsc_spring_update(struct wlsc_spring *spring, uint32_t msec)
 159 {
 160         double force, v, current, step;
 161
 162         step = (msec - spring->timestamp) / 300.0;
 163         spring->timestamp = msec;
 164
 165         current = spring->current;
 166         v = current - spring->previous;
 167         force = spring->k * (spring->target - current) / 10.0 +
 168                 (spring->previous - current) - v * spring->friction;
 169
 170         spring->current =
 171                 current + (current - spring->previous) + force * step * step;
 172         spring->previous = current;
 173
 174 #if 0
 175         if (spring->current >= 1.0) {
 176 #ifdef TWEENER_BOUNCE
 177                 spring->current = 2.0 - spring->current;
 178                 spring->previous = 2.0 - spring->previous;
 179 #else
 180                 spring->current = 1.0;
 181                 spring->previous = 1.0;
 182 #endif
 183         }
 184
 185         if (spring->current <= 0.0) {
 186                 spring->current = 0.0;
 187                 spring->previous = 0.0;
 188         }
 189 #endif
 190 }
 191
 192 WL_EXPORT int
 193 wlsc_spring_done(struct wlsc_spring *spring)
 194 {
 195         return fabs(spring->previous - spring->target) < 0.0002 &&
 196                 fabs(spring->current - spring->target) < 0.0002;
 197 }
 198
 199 static void
 200 surface_handle_buffer_destroy(struct wl_listener *listener,
 201                               struct wl_resource *resource, uint32_t time)
 202 {
 203         struct wlsc_surface *es = container_of(listener, struct wlsc_surface,
 204                                                buffer_destroy_listener);
 205         struct wl_buffer *buffer = (struct wl_buffer *) resource;
 206
 207         if (es->buffer == buffer)
 208                 es->buffer = NULL;
 209 }
 210
 211 static void
 212 output_handle_scanout_buffer_destroy(struct wl_listener *listener,
 213                                      struct wl_resource *resource,
 214                                      uint32_t time)
 215 {
 216         struct wlsc_output *output =
 217                 container_of(listener, struct wlsc_output,
 218                              scanout_buffer_destroy_listener);
 219         struct wl_buffer *buffer = (struct wl_buffer *) resource;
 220
 221         if (output->scanout_buffer == buffer)
 222                 output->scanout_buffer = NULL;
 223 }
 224
 225 WL_EXPORT struct wlsc_surface *
 226 wlsc_surface_create(struct wlsc_compositor *compositor,
 227                     int32_t x, int32_t y, int32_t width, int32_t height)
 228 {
 229         struct wlsc_surface *surface;
 230
 231         surface = malloc(sizeof *surface);
 232         if (surface == NULL)
 233                 return NULL;
 234
 235         wl_list_init(&surface->link);
 236         wl_list_init(&surface->buffer_link);
 237         surface->map_type = WLSC_SURFACE_MAP_UNMAPPED;
 238
 239         glGenTextures(1, &surface->texture);
 240         glBindTexture(GL_TEXTURE_2D, surface->texture);
 241         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 242         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 243
 244         surface->surface.client = NULL;
 245
 246         surface->compositor = compositor;
 247         surface->visual = NULL;
 248         surface->image = EGL_NO_IMAGE_KHR;
 249         surface->saved_texture = 0;
 250         surface->x = x;
 251         surface->y = y;
 252         surface->width = width;
 253         surface->height = height;
 254
 255         surface->buffer = NULL;
 256
 257         pixman_region32_init(&surface->damage);
 258
 259         surface->buffer_destroy_listener.func = surface_handle_buffer_destroy;
 260         wl_list_init(&surface->buffer_destroy_listener.link);
 261
 262         surface->transform = NULL;
 263
 264         return surface;
 265 }
 266
 267 WL_EXPORT void
 268 wlsc_surface_damage_rectangle(struct wlsc_surface *surface,
 269                               int32_t x, int32_t y,
 270                               int32_t width, int32_t height)
 271 {
 272         struct wlsc_compositor *compositor = surface->compositor;
 273
 274         pixman_region32_union_rect(&surface->damage,
 275                                    &surface->damage,
 276                                    surface->x + x, surface->y + y,
 277                                    width, height);
 278         wlsc_compositor_schedule_repaint(compositor);
 279 }
 280
 281 WL_EXPORT void
 282 wlsc_surface_damage(struct wlsc_surface *surface)
 283 {
 284         wlsc_surface_damage_rectangle(surface, 0, 0,
 285                                       surface->width, surface->height);
 286 }
 287
 288 WL_EXPORT uint32_t
 289 wlsc_compositor_get_time(void)
 290 {
 291         struct timeval tv;
 292
 293         gettimeofday(&tv, NULL);
 294
 295         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 296 }
 297
 298 static void
 299 destroy_surface(struct wl_resource *resource, struct wl_client *client)
 300 {
 301         struct wlsc_surface *surface =
 302                 container_of(resource, struct wlsc_surface, surface.resource);
 303         struct wlsc_compositor *compositor = surface->compositor;
 304
 305         wlsc_surface_damage(surface);
 306
 307         wl_list_remove(&surface->link);
 308         if (surface->saved_texture == 0)
 309                 glDeleteTextures(1, &surface->texture);
 310         else
 311                 glDeleteTextures(1, &surface->saved_texture);
 312
 313         if (surface->buffer)
 314                 wl_list_remove(&surface->buffer_destroy_listener.link);
 315
 316         if (surface->image != EGL_NO_IMAGE_KHR)
 317                 compositor->destroy_image(compositor->display,
 318                                           surface->image);
 319
 320         wl_list_remove(&surface->buffer_link);
 321
 322         free(surface);
 323 }
 324
 325 static void
 326 wlsc_buffer_attach(struct wl_buffer *buffer, struct wl_surface *surface)
 327 {
 328         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 329         struct wlsc_compositor *ec = es->compositor;
 330         struct wl_list *surfaces_attached_to;
 331
 332         if (es->saved_texture != 0)
 333                 es->texture = es->saved_texture;
 334
 335         glBindTexture(GL_TEXTURE_2D, es->texture);
 336
 337         if (wl_buffer_is_shm(buffer)) {
 338                 /* Unbind any EGLImage texture that may be bound, so we don't
 339                  * overwrite it.*/
 340                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 341                              0, 0, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, NULL);
 342                 es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
 343                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 344                              es->pitch, buffer->height, 0,
 345                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
 346                              wl_shm_buffer_get_data(buffer));
 347                 es->visual = buffer->visual;
 348
 349                 surfaces_attached_to = buffer->user_data;
 350
 351                 wl_list_remove(&es->buffer_link);
 352                 wl_list_insert(surfaces_attached_to, &es->buffer_link);
 353         } else {
 354                 if (es->image != EGL_NO_IMAGE_KHR)
 355                         ec->destroy_image(ec->display, es->image);
 356                 es->image = ec->create_image(ec->display, NULL,
 357                                              EGL_WAYLAND_BUFFER_WL,
 358                                              buffer, NULL);
 359
 360                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 361                 es->visual = buffer->visual;
 362                 es->pitch = es->width;
 363         }
 364 }
 365
 366 static void
 367 wlsc_sprite_attach(struct wlsc_sprite *sprite, struct wl_surface *surface)
 368 {
 369         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 370         struct wlsc_compositor *ec = es->compositor;
 371
 372         es->pitch = es->width;
 373         es->image = sprite->image;
 374         if (sprite->image != EGL_NO_IMAGE_KHR) {
 375                 glBindTexture(GL_TEXTURE_2D, es->texture);
 376                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 377         } else {
 378                 if (es->saved_texture == 0)
 379                         es->saved_texture = es->texture;
 380                 es->texture = sprite->texture;
 381         }
 382
 383         es->visual = sprite->visual;
 384
 385         if (es->buffer)
 386                 es->buffer = NULL;
 387 }
 388
 389 enum sprite_usage {
 390         SPRITE_USE_CURSOR = (1 << 0),
 391 };
 392
 393 static struct wlsc_sprite *
 394 create_sprite_from_png(struct wlsc_compositor *ec,
 395                        const char *filename, uint32_t usage)
 396 {
 397         uint32_t *pixels;
 398         struct wlsc_sprite *sprite;
 399         int32_t width, height;
 400         uint32_t stride;
 401
 402         pixels = wlsc_load_image(filename, &width, &height, &stride);
 403         if (pixels == NULL)
 404                 return NULL;
 405
 406         sprite = malloc(sizeof *sprite);
 407         if (sprite == NULL) {
 408                 free(pixels);
 409                 return NULL;
 410         }
 411
 412         sprite->visual = &ec->compositor.premultiplied_argb_visual;
 413         sprite->width = width;
 414         sprite->height = height;
 415         sprite->image = EGL_NO_IMAGE_KHR;
 416
 417         if (usage & SPRITE_USE_CURSOR && ec->create_cursor_image != NULL)
 418                 sprite->image = ec->create_cursor_image(ec, width, height);
 419
 420         glGenTextures(1, &sprite->texture);
 421         glBindTexture(GL_TEXTURE_2D, sprite->texture);
 422         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 423         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 424         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 425         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 426
 427         if (sprite->image != EGL_NO_IMAGE_KHR) {
 428                 ec->image_target_texture_2d(GL_TEXTURE_2D, sprite->image);
 429                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,
 430                                 GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 431         } else {
 432                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT, width, height, 0,
 433                              GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 434         }
 435
 436         free(pixels);
 437
 438         return sprite;
 439 }
 440
 441 static const struct {
 442         const char *filename;
 443         int hotspot_x, hotspot_y;
 444 } pointer_images[] = {
 445         { DATADIR "/wayland/bottom_left_corner.png",     6, 30 },
 446         { DATADIR "/wayland/bottom_right_corner.png",   28, 28 },
 447         { DATADIR "/wayland/bottom_side.png",           16, 20 },
 448         { DATADIR "/wayland/grabbing.png",              20, 17 },
 449         { DATADIR "/wayland/left_ptr.png",              10,  5 },
 450         { DATADIR "/wayland/left_side.png",             10, 20 },
 451         { DATADIR "/wayland/right_side.png",            30, 19 },
 452         { DATADIR "/wayland/top_left_corner.png",        8,  8 },
 453         { DATADIR "/wayland/top_right_corner.png",      26,  8 },
 454         { DATADIR "/wayland/top_side.png",              18,  8 },
 455         { DATADIR "/wayland/xterm.png",                 15, 15 }
 456 };
 457
 458 static void
 459 create_pointer_images(struct wlsc_compositor *ec)
 460 {
 461         int i, count;
 462
 463         count = ARRAY_LENGTH(pointer_images);
 464         ec->pointer_sprites = malloc(count * sizeof *ec->pointer_sprites);
 465         for (i = 0; i < count; i++) {
 466                 ec->pointer_sprites[i] =
 467                         create_sprite_from_png(ec,
 468                                                pointer_images[i].filename,
 469                                                SPRITE_USE_CURSOR);
 470         }
 471 }
 472
 473 static struct wlsc_surface *
 474 background_create(struct wlsc_output *output, const char *filename)
 475 {
 476         struct wlsc_surface *background;
 477         struct wlsc_sprite *sprite;
 478
 479         background = wlsc_surface_create(output->compositor,
 480                                          output->x, output->y,
 481                                          output->current->width,
 482                                          output->current->height);
 483         if (background == NULL)
 484                 return NULL;
 485
 486         sprite = create_sprite_from_png(output->compositor, filename, 0);
 487         if (sprite == NULL) {
 488                 free(background);
 489                 return NULL;
 490         }
 491
 492         wlsc_sprite_attach(sprite, &background->surface);
 493
 494         return background;
 495 }
 496
 497 static int
 498 texture_region(struct wlsc_surface *es, pixman_region32_t *region)
 499 {
 500         struct wlsc_compositor *ec = es->compositor;
 501         GLfloat *v, inv_width, inv_height;
 502         pixman_box32_t *rectangles;
 503         unsigned int *p;
 504         int i, n;
 505
 506         rectangles = pixman_region32_rectangles(region, &n);
 507         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 508         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 509         inv_width = 1.0 / es->pitch;
 510         inv_height = 1.0 / es->height;
 511
 512         for (i = 0; i < n; i++, v += 16, p += 6) {
 513                 v[ 0] = rectangles[i].x1;
 514                 v[ 1] = rectangles[i].y1;
 515                 v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
 516                 v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
 517
 518                 v[ 4] = rectangles[i].x1;
 519                 v[ 5] = rectangles[i].y2;
 520                 v[ 6] = v[ 2];
 521                 v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
 522
 523                 v[ 8] = rectangles[i].x2;
 524                 v[ 9] = rectangles[i].y1;
 525                 v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
 526                 v[11] = v[ 3];
 527
 528                 v[12] = rectangles[i].x2;
 529                 v[13] = rectangles[i].y2;
 530                 v[14] = v[10];
 531                 v[15] = v[ 7];
 532
 533                 p[0] = i * 4 + 0;
 534                 p[1] = i * 4 + 1;
 535                 p[2] = i * 4 + 2;
 536                 p[3] = i * 4 + 2;
 537                 p[4] = i * 4 + 1;
 538                 p[5] = i * 4 + 3;
 539         }
 540
 541         return n;
 542 }
 543
 544 static void
 545 transform_vertex(struct wlsc_surface *surface,
 546                  GLfloat x, GLfloat y, GLfloat u, GLfloat v, GLfloat *r)
 547 {
 548         struct wlsc_vector t;
 549
 550         t.f[0] = x;
 551         t.f[1] = y;
 552         t.f[2] = 0.0;
 553         t.f[3] = 1.0;
 554
 555         wlsc_matrix_transform(&surface->transform->matrix, &t);
 556
 557         r[ 0] = t.f[0];
 558         r[ 1] = t.f[1];
 559         r[ 2] = u;
 560         r[ 3] = v;
 561 }
 562
 563 static int
 564 texture_transformed_surface(struct wlsc_surface *es)
 565 {
 566         struct wlsc_compositor *ec = es->compositor;
 567         GLfloat *v;
 568         unsigned int *p;
 569
 570         v = wl_array_add(&ec->vertices, 16 * sizeof *v);
 571         p = wl_array_add(&ec->indices, 6 * sizeof *p);
 572
 573         transform_vertex(es, es->x, es->y, 0.0, 0.0, &v[0]);
 574         transform_vertex(es, es->x, es->y + es->height, 0.0, 1.0, &v[4]);
 575         transform_vertex(es, es->x + es->width, es->y, 1.0, 0.0, &v[8]);
 576         transform_vertex(es, es->x + es->width, es->y + es->height,
 577                          1.0, 1.0, &v[12]);
 578
 579         p[0] = 0;
 580         p[1] = 1;
 581         p[2] = 2;
 582         p[3] = 2;
 583         p[4] = 1;
 584         p[5] = 3;
 585
 586         return 1;
 587 }
 588
 589 static void
 590 wlsc_surface_draw(struct wlsc_surface *es,
 591                   struct wlsc_output *output, pixman_region32_t *clip)
 592 {
 593         struct wlsc_compositor *ec = es->compositor;
 594         GLfloat *v;
 595         pixman_region32_t repaint;
 596         GLint filter;
 597         int n;
 598
 599         pixman_region32_init_rect(&repaint,
 600                                   es->x, es->y, es->width, es->height);
 601         pixman_region32_intersect(&repaint, &repaint, clip);
 602         if (!pixman_region32_not_empty(&repaint))
 603                 return;
 604
 605         if (es->visual == &ec->compositor.argb_visual) {
 606                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 607                 glEnable(GL_BLEND);
 608         } else if (es->visual == &ec->compositor.premultiplied_argb_visual) {
 609                 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 610                 glEnable(GL_BLEND);
 611         } else {
 612                 glDisable(GL_BLEND);
 613         }
 614
 615         if (es->transform == NULL) {
 616                 filter = GL_NEAREST;
 617                 n = texture_region(es, &repaint);
 618         } else {
 619                 filter = GL_LINEAR;
 620                 n = texture_transformed_surface(es);
 621         }
 622
 623         glBindTexture(GL_TEXTURE_2D, es->texture);
 624         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
 625         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
 626
 627         v = ec->vertices.data;
 628         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 629         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 630         glEnableVertexAttribArray(0);
 631         glEnableVertexAttribArray(1);
 632         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 633
 634         ec->vertices.size = 0;
 635         ec->indices.size = 0;
 636         pixman_region32_fini(&repaint);
 637 }
 638
 639 static void
 640 wlsc_surface_raise(struct wlsc_surface *surface)
 641 {
 642         struct wlsc_compositor *compositor = surface->compositor;
 643
 644         wl_list_remove(&surface->link);
 645         wl_list_insert(&compositor->surface_list, &surface->link);
 646 }
 647
 648 WL_EXPORT void
 649 wlsc_compositor_damage_all(struct wlsc_compositor *compositor)
 650 {
 651         struct wlsc_output *output;
 652
 653         wl_list_for_each(output, &compositor->output_list, link)
 654                 wlsc_output_damage(output);
 655 }
 656
 657 static inline void
 658 wlsc_buffer_post_release(struct wl_buffer *buffer)
 659 {
 660         if (buffer == NULL || --buffer->busy_count > 0)
 661                 return;
 662
 663         assert(buffer->client != NULL);
 664         wl_client_post_event(buffer->client,
 665                              &buffer->resource.object,
 666                              WL_BUFFER_RELEASE);
 667 }
 668
 669 WL_EXPORT void
 670 wlsc_output_damage(struct wlsc_output *output)
 671 {
 672         struct wlsc_compositor *compositor = output->compositor;
 673
 674         pixman_region32_union(&compositor->damage,
 675                               &compositor->damage, &output->region);
 676         wlsc_compositor_schedule_repaint(compositor);
 677 }
 678
 679 static void
 680 fade_frame(struct wlsc_animation *animation,
 681            struct wlsc_output *output, uint32_t msecs)
 682 {
 683         struct wlsc_compositor *compositor =
 684                 container_of(animation,
 685                              struct wlsc_compositor, fade.animation);
 686
 687         wlsc_spring_update(&compositor->fade.spring, msecs);
 688         if (wlsc_spring_done(&compositor->fade.spring)) {
 689                 if (compositor->fade.spring.current > 0.999) {
 690                         compositor->state = WLSC_COMPOSITOR_SLEEPING;
 691                         compositor->shell->lock(compositor->shell);
 692                 }
 693                 compositor->fade.spring.current =
 694                         compositor->fade.spring.target;
 695                 wl_list_remove(&animation->link);
 696                 wl_list_init(&animation->link);
 697         }
 698
 699         wlsc_output_damage(output);
 700 }
 701
 702 static void
 703 fade_output(struct wlsc_output *output,
 704             GLfloat tint, pixman_region32_t *region)
 705 {
 706         struct wlsc_compositor *compositor = output->compositor;
 707         struct wlsc_surface surface;
 708         GLfloat color[4] = { 0.0, 0.0, 0.0, tint };
 709
 710         surface.compositor = compositor;
 711         surface.x = output->x;
 712         surface.y = output->y;
 713         surface.width = output->current->width;
 714         surface.height = output->current->height;
 715         surface.texture = GL_NONE;
 716         surface.transform = NULL;
 717
 718         if (tint <= 1.0)
 719                 surface.visual =
 720                         &compositor->compositor.premultiplied_argb_visual;
 721         else
 722                 surface.visual = &compositor->compositor.rgb_visual;
 723
 724         glUseProgram(compositor->solid_shader.program);
 725         glUniformMatrix4fv(compositor->solid_shader.proj_uniform,
 726                            1, GL_FALSE, output->matrix.d);
 727         glUniform4fv(compositor->solid_shader.color_uniform, 1, color);
 728         wlsc_surface_draw(&surface, output, region);
 729 }
 730
 731 static void
 732 wlsc_output_repaint(struct wlsc_output *output)
 733 {
 734         struct wlsc_compositor *ec = output->compositor;
 735         struct wlsc_surface *es;
 736         struct wlsc_input_device *device;
 737         pixman_region32_t clip, new_damage, total_damage, region;
 738
 739         output->prepare_render(output);
 740
 741         glViewport(0, 0, output->current->width, output->current->height);
 742
 743         glUseProgram(ec->texture_shader.program);
 744         glUniformMatrix4fv(ec->texture_shader.proj_uniform,
 745                            1, GL_FALSE, output->matrix.d);
 746         glUniform1i(ec->texture_shader.tex_uniform, 0);
 747
 748         pixman_region32_init(&new_damage);
 749         pixman_region32_intersect(&new_damage, &ec->damage, &output->region);
 750         pixman_region32_init(&clip);
 751         pixman_region32_copy(&clip, &output->region);
 752         wl_list_for_each(es, &ec->surface_list, link) {
 753                 pixman_region32_intersect(&es->damage, &es->damage, &clip);
 754                 pixman_region32_union(&new_damage, &new_damage, &es->damage);
 755                 if (es->visual == &ec->compositor.rgb_visual) {
 756                         pixman_region32_init_rect(&region, es->x, es->y, es->width, es->height);
 757                         pixman_region32_subtract(&clip, &clip, &region);
 758                         pixman_region32_fini(&region);
 759                 }
 760
 761         }
 762
 763         pixman_region32_subtract(&ec->damage, &ec->damage, &output->region);
 764         pixman_region32_init(&total_damage);
 765         pixman_region32_union(&total_damage, &new_damage,
 766                               &output->previous_damage);
 767         pixman_region32_copy(&output->previous_damage, &new_damage);
 768
 769         device = (struct wlsc_input_device *) ec->input_device;
 770         if (ec->focus && ec->fade.spring.current < 0.001) {
 771                 if (!wl_list_empty(&device->sprite->link)) {
 772                         wl_list_remove(&device->sprite->link);
 773                         wl_list_init(&device->sprite->link);
 774                 }
 775                 if (output->set_hardware_cursor(output, device) < 0)
 776                         wl_list_insert(&ec->surface_list,
 777                                        &device->sprite->link);
 778         } else {
 779                 output->set_hardware_cursor(output, NULL);
 780                 if (wl_list_empty(&device->sprite->link))
 781                         wl_list_insert(&ec->surface_list,
 782                                        &device->sprite->link);
 783         }
 784
 785         es = container_of(ec->surface_list.next, struct wlsc_surface, link);
 786
 787         if (es->visual == &ec->compositor.rgb_visual &&
 788             output->prepare_scanout_surface(output, es) == 0) {
 789                 /* We're drawing nothing now,
 790                  * draw the damaged regions later. */
 791                 pixman_region32_union(&ec->damage, &ec->damage, &total_damage);
 792
 793                 output->scanout_buffer = es->buffer;
 794                 output->scanout_buffer->busy_count++;
 795
 796                 wl_list_remove(&output->scanout_buffer_destroy_listener.link);
 797                 wl_list_insert(output->scanout_buffer->resource.destroy_listener_list.prev,
 798                                &output->scanout_buffer_destroy_listener.link);
 799
 800                 return;
 801         }
 802
 803         if (es->fullscreen_output == output) {
 804                 if (es->width < output->current->width ||
 805                     es->height < output->current->height)
 806                         glClear(GL_COLOR_BUFFER_BIT);
 807                 wlsc_surface_draw(es, output, &total_damage);
 808         } else {
 809                 glUseProgram(ec->texture_shader.program);
 810                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 811                         if (ec->overlay == es)
 812                                 continue;
 813
 814                         wlsc_surface_draw(es, output, &total_damage);
 815                 }
 816         }
 817
 818         if (ec->overlay)
 819                 wlsc_surface_draw(ec->overlay, output, &total_damage);
 820
 821         if (ec->fade.spring.current > 0.001)
 822                 fade_output(output, ec->fade.spring.current, &total_damage);
 823 }
 824
 825 static void
 826 repaint(void *data, int msecs)
 827 {
 828         struct wlsc_output *output = data;
 829         struct wlsc_compositor *compositor = output->compositor;
 830         struct wlsc_surface *es;
 831         struct wlsc_animation *animation, *next;
 832
 833         wlsc_output_repaint(output);
 834         output->repaint_needed = 0;
 835         output->repaint_scheduled = 1;
 836         output->present(output);
 837
 838         /* FIXME: Keep the surfaces in an per-output list. */
 839         wl_list_for_each(es, &compositor->surface_list, link) {
 840                 if (es->output == output) {
 841                         wl_display_post_frame(compositor->wl_display,
 842                                               &es->surface, msecs);
 843                 }
 844         }
 845
 846         wl_list_for_each_safe(animation, next,
 847                               &compositor->animation_list, link)
 848                 animation->frame(animation, output, msecs);
 849 }
 850
 851 static void
 852 idle_repaint(void *data)
 853 {
 854         repaint(data, wlsc_compositor_get_time());
 855 }
 856
 857 WL_EXPORT void
 858 wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
 859 {
 860         wlsc_buffer_post_release(output->scanout_buffer);
 861         output->scanout_buffer = NULL;
 862         output->repaint_scheduled = 0;
 863
 864         if (output->repaint_needed)
 865                 repaint(output, msecs);
 866 }
 867
 868 WL_EXPORT void
 869 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 870 {
 871         struct wlsc_output *output;
 872         struct wl_event_loop *loop;
 873
 874         if (compositor->state == WLSC_COMPOSITOR_SLEEPING)
 875                 return;
 876
 877         loop = wl_display_get_event_loop(compositor->wl_display);
 878         wl_list_for_each(output, &compositor->output_list, link) {
 879                 output->repaint_needed = 1;
 880                 if (output->repaint_scheduled)
 881                         continue;
 882
 883                 wl_event_loop_add_idle(loop, idle_repaint, output);
 884                 output->repaint_scheduled = 1;
 885         }
 886 }
 887
 888 WL_EXPORT void
 889 wlsc_compositor_fade(struct wlsc_compositor *compositor, float tint)
 890 {
 891         int done;
 892
 893         done = wlsc_spring_done(&compositor->fade.spring);
 894         compositor->fade.spring.target = tint;
 895         if (wlsc_spring_done(&compositor->fade.spring))
 896                 return;
 897
 898         if (done)
 899                 compositor->fade.spring.timestamp =
 900                         wlsc_compositor_get_time();
 901
 902         wlsc_compositor_damage_all(compositor);
 903         if (wl_list_empty(&compositor->fade.animation.link))
 904                 wl_list_insert(compositor->animation_list.prev,
 905                                &compositor->fade.animation.link);
 906 }
 907
 908 static void
 909 surface_destroy(struct wl_client *client,
 910                 struct wl_surface *surface)
 911 {
 912         wl_resource_destroy(&surface->resource, client,
 913                             wlsc_compositor_get_time());
 914 }
 915
 916 WL_EXPORT void
 917 wlsc_surface_assign_output(struct wlsc_surface *es)
 918 {
 919         struct wlsc_compositor *ec = es->compositor;
 920         struct wlsc_output *output;
 921
 922         struct wlsc_output *tmp = es->output;
 923         es->output = NULL;
 924
 925         wl_list_for_each(output, &ec->output_list, link) {
 926                 if (pixman_region32_contains_point(&output->region,
 927                                                    es->x, es->y, NULL)) {
 928                         if (output != tmp)
 929                                 printf("assiging surface %p to output %p\n",
 930                                        es, output);
 931                         es->output = output;
 932                 }
 933         }
 934
 935         if (es->output == NULL) {
 936                 printf("no output found\n");
 937                 es->output = container_of(ec->output_list.next,
 938                                           struct wlsc_output, link);
 939         }
 940 }
 941
 942 static void
 943 surface_attach(struct wl_client *client,
 944                struct wl_surface *surface, struct wl_buffer *buffer,
 945                int32_t x, int32_t y)
 946 {
 947         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 948
 949         /* FIXME: This damages the entire old surface, but we should
 950          * really just damage the part that's no longer covered by the
 951          * surface.  Anything covered by the new surface will be
 952          * damaged by the client. */
 953         if (es->buffer)
 954                 wlsc_surface_damage(es);
 955
 956         buffer->busy_count++;
 957         wlsc_buffer_post_release(es->buffer);
 958
 959         es->buffer = buffer;
 960         wl_list_remove(&es->buffer_destroy_listener.link);
 961         wl_list_insert(es->buffer->resource.destroy_listener_list.prev,
 962                        &es->buffer_destroy_listener.link);
 963
 964         es->x += x;
 965         es->y += y;
 966         es->width = buffer->width;
 967         es->height = buffer->height;
 968         if (x != 0 || y != 0)
 969                 wlsc_surface_assign_output(es);
 970         if (es->visual == NULL)
 971                 wl_list_insert(&es->compositor->surface_list, &es->link);
 972
 973         wlsc_buffer_attach(buffer, surface);
 974
 975         es->compositor->shell->attach(es->compositor->shell, es);
 976 }
 977
 978 static void
 979 surface_damage(struct wl_client *client,
 980                struct wl_surface *surface,
 981                int32_t x, int32_t y, int32_t width, int32_t height)
 982 {
 983         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 984
 985         wlsc_surface_damage_rectangle(es, x, y, width, height);
 986 }
 987
 988 const static struct wl_surface_interface surface_interface = {
 989         surface_destroy,
 990         surface_attach,
 991         surface_damage
 992 };
 993
 994 static void
 995 wlsc_input_device_attach(struct wlsc_input_device *device,
 996                          int x, int y, int width, int height)
 997 {
 998         wlsc_surface_damage(device->sprite);
 999
1000         device->hotspot_x = x;
1001         device->hotspot_y = y;
1002
1003         device->sprite->x = device->input_device.x - device->hotspot_x;
1004         device->sprite->y = device->input_device.y - device->hotspot_y;
1005         device->sprite->width = width;
1006         device->sprite->height = height;
1007
1008         wlsc_surface_damage(device->sprite);
1009 }
1010
1011 static void
1012 wlsc_input_device_attach_buffer(struct wlsc_input_device *device,
1013                                 struct wl_buffer *buffer, int x, int y)
1014 {
1015         wlsc_buffer_attach(buffer, &device->sprite->surface);
1016         wlsc_input_device_attach(device, x, y, buffer->width, buffer->height);
1017 }
1018
1019 static void
1020 wlsc_input_device_attach_sprite(struct wlsc_input_device *device,
1021                                 struct wlsc_sprite *sprite, int x, int y)
1022 {
1023         wlsc_sprite_attach(sprite, &device->sprite->surface);
1024         wlsc_input_device_attach(device, x, y, sprite->width, sprite->height);
1025 }
1026
1027 WL_EXPORT void
1028 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
1029                                     enum wlsc_pointer_type type)
1030 {
1031         struct wlsc_compositor *compositor =
1032                 (struct wlsc_compositor *) device->input_device.compositor;
1033
1034         wlsc_input_device_attach_sprite(device,
1035                                         compositor->pointer_sprites[type],
1036                                         pointer_images[type].hotspot_x,
1037                                         pointer_images[type].hotspot_y);
1038 }
1039
1040 static void
1041 compositor_create_surface(struct wl_client *client,
1042                           struct wl_compositor *compositor, uint32_t id)
1043 {
1044         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
1045         struct wlsc_surface *surface;
1046
1047         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
1048         if (surface == NULL) {
1049                 wl_client_post_no_memory(client);
1050                 return;
1051         }
1052
1053         surface->surface.resource.destroy = destroy_surface;
1054
1055         surface->surface.resource.object.id = id;
1056         surface->surface.resource.object.interface = &wl_surface_interface;
1057         surface->surface.resource.object.implementation =
1058                 (void (**)(void)) &surface_interface;
1059         surface->surface.client = client;
1060
1061         wl_client_add_resource(client, &surface->surface.resource);
1062 }
1063
1064 const static struct wl_compositor_interface compositor_interface = {
1065         compositor_create_surface,
1066 };
1067
1068 static void
1069 wlsc_surface_transform(struct wlsc_surface *surface,
1070                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
1071 {
1072         *sx = x - surface->x;
1073         *sy = y - surface->y;
1074 }
1075
1076 WL_EXPORT struct wlsc_surface *
1077 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
1078 {
1079         struct wlsc_compositor *ec =
1080                 (struct wlsc_compositor *) device->compositor;
1081         struct wlsc_surface *es;
1082
1083         wl_list_for_each(es, &ec->surface_list, link) {
1084                 if (es->surface.client == NULL)
1085                         continue;
1086                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
1087                 if (0 <= *sx && *sx < es->width &&
1088                     0 <= *sy && *sy < es->height)
1089                         return es;
1090         }
1091
1092         return NULL;
1093 }
1094
1095
1096 static void
1097 motion_grab_motion(struct wl_grab *grab,
1098                    uint32_t time, int32_t x, int32_t y)
1099 {
1100         struct wlsc_input_device *device =
1101                 (struct wlsc_input_device *) grab->input_device;
1102         struct wlsc_surface *es =
1103                 (struct wlsc_surface *) device->input_device.pointer_focus;
1104         int32_t sx, sy;
1105
1106         wlsc_surface_transform(es, x, y, &sx, &sy);
1107         wl_client_post_event(es->surface.client,
1108                              &device->input_device.object,
1109                              WL_INPUT_DEVICE_MOTION,
1110                              time, x, y, sx, sy);
1111 }
1112
1113 static void
1114 motion_grab_button(struct wl_grab *grab,
1115                    uint32_t time, int32_t button, int32_t state)
1116 {
1117         wl_client_post_event(grab->input_device->pointer_focus->client,
1118                              &grab->input_device->object,
1119                              WL_INPUT_DEVICE_BUTTON,
1120                              time, button, state);
1121 }
1122
1123 static void
1124 motion_grab_end(struct wl_grab *grab, uint32_t time)
1125 {
1126 }
1127
1128 static const struct wl_grab_interface motion_grab_interface = {
1129         motion_grab_motion,
1130         motion_grab_button,
1131         motion_grab_end
1132 };
1133
1134 WL_EXPORT void
1135 wlsc_compositor_wake(struct wlsc_compositor *compositor)
1136 {
1137         if (compositor->idle_inhibit)
1138                 return;
1139
1140         wlsc_compositor_fade(compositor, 0.0);
1141         compositor->state = WLSC_COMPOSITOR_ACTIVE;
1142
1143         wl_event_source_timer_update(compositor->idle_source,
1144                                      option_idle_time * 1000);
1145 }
1146
1147 static void
1148 wlsc_compositor_idle_inhibit(struct wlsc_compositor *compositor)
1149 {
1150         wlsc_compositor_wake(compositor);
1151         compositor->idle_inhibit++;
1152 }
1153
1154 static void
1155 wlsc_compositor_idle_release(struct wlsc_compositor *compositor)
1156 {
1157         compositor->idle_inhibit--;
1158         wlsc_compositor_wake(compositor);
1159 }
1160
1161 static int
1162 idle_handler(void *data)
1163 {
1164         struct wlsc_compositor *compositor = data;
1165
1166         if (compositor->idle_inhibit)
1167                 return 1;
1168
1169         wlsc_compositor_fade(compositor, 1.0);
1170
1171         return 1;
1172 }
1173
1174 WL_EXPORT void
1175 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1176 {
1177         struct wlsc_surface *es;
1178         struct wlsc_compositor *ec =
1179                 (struct wlsc_compositor *) device->compositor;
1180         struct wlsc_output *output;
1181         const struct wl_grab_interface *interface;
1182         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1183         int32_t sx, sy;
1184         int x_valid = 0, y_valid = 0;
1185         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1186
1187         wlsc_compositor_wake(ec);
1188
1189         wl_list_for_each(output, &ec->output_list, link) {
1190                 if (output->x <= x && x <= output->x + output->current->width)
1191                         x_valid = 1;
1192
1193                 if (output->y <= y && y <= output->y + output->current->height)
1194                         y_valid = 1;
1195
1196                 /* FIXME: calculate this only on output addition/deletion */
1197                 if (output->x < min_x)
1198                         min_x = output->x;
1199                 if (output->y < min_y)
1200                         min_y = output->y;
1201
1202                 if (output->x + output->current->width > max_x)
1203                         max_x = output->x + output->current->width;
1204                 if (output->y + output->current->height > max_y)
1205                         max_y = output->y + output->current->height;
1206         }
1207
1208         if (!x_valid) {
1209                 if (x < min_x)
1210                         x = min_x;
1211                 else if (x >= max_x)
1212                         x = max_x;
1213         }
1214         if (!y_valid) {
1215                 if (y < min_y)
1216                         y = min_y;
1217                 else  if (y >= max_y)
1218                         y = max_y;
1219         }
1220
1221         device->x = x;
1222         device->y = y;
1223
1224         if (device->grab) {
1225                 interface = device->grab->interface;
1226                 interface->motion(device->grab, time, x, y);
1227         } else {
1228                 es = pick_surface(device, &sx, &sy);
1229                 wl_input_device_set_pointer_focus(device,
1230                                                   &es->surface,
1231                                                   time, x, y, sx, sy);
1232                 if (es)
1233                         wl_client_post_event(es->surface.client,
1234                                              &device->object,
1235                                              WL_INPUT_DEVICE_MOTION,
1236                                              time, x, y, sx, sy);
1237         }
1238
1239         wlsc_surface_damage(wd->sprite);
1240
1241         wd->sprite->x = device->x - wd->hotspot_x;
1242         wd->sprite->y = device->y - wd->hotspot_y;
1243
1244         wlsc_surface_damage(wd->sprite);
1245 }
1246
1247 WL_EXPORT void
1248 wlsc_surface_activate(struct wlsc_surface *surface,
1249                       struct wlsc_input_device *device, uint32_t time)
1250 {
1251         struct wlsc_shell *shell = surface->compositor->shell;
1252
1253         wlsc_surface_raise(surface);
1254         if (device->selection)
1255                 shell->set_selection_focus(shell,
1256                                            device->selection,
1257                                            &surface->surface, time);
1258
1259         wl_input_device_set_keyboard_focus(&device->input_device,
1260                                            &surface->surface,
1261                                            time);
1262 }
1263
1264 struct wlsc_binding {
1265         uint32_t key;
1266         uint32_t button;
1267         uint32_t modifier;
1268         wlsc_binding_handler_t handler;
1269         void *data;
1270         struct wl_list link;
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 =
1279                 (struct wlsc_compositor *) device->compositor;
1280         struct wlsc_binding *b;
1281         struct wlsc_surface *surface =
1282                 (struct wlsc_surface *) device->pointer_focus;
1283
1284         if (state)
1285                 wlsc_compositor_idle_inhibit(compositor);
1286         else
1287                 wlsc_compositor_idle_release(compositor);
1288
1289         if (state && surface && device->grab == NULL) {
1290                 wlsc_surface_activate(surface, wd, time);
1291                 wl_input_device_start_grab(device,
1292                                            &device->motion_grab,
1293                                            button, time);
1294         }
1295
1296         wl_list_for_each(b, &compositor->binding_list, link) {
1297                 if (b->button == button &&
1298                     b->modifier == wd->modifier_state && state) {
1299                         b->handler(&wd->input_device,
1300                                    time, 0, button, state, b->data);
1301                         break;
1302                 }
1303         }
1304
1305         if (device->grab)
1306                 device->grab->interface->button(device->grab, time,
1307                                                 button, state);
1308
1309         if (!state && device->grab && device->grab_button == button)
1310                 wl_input_device_end_grab(device, time);
1311 }
1312
1313 static void
1314 terminate_binding(struct wl_input_device *device, uint32_t time,
1315                   uint32_t key, uint32_t button, uint32_t state, void *data)
1316 {
1317         struct wlsc_compositor *compositor = data;
1318
1319         if (state)
1320                 wl_display_terminate(compositor->wl_display);
1321 }
1322
1323 WL_EXPORT struct wlsc_binding *
1324 wlsc_compositor_add_binding(struct wlsc_compositor *compositor,
1325                             uint32_t key, uint32_t button, uint32_t modifier,
1326                             wlsc_binding_handler_t handler, void *data)
1327 {
1328         struct wlsc_binding *binding;
1329
1330         binding = malloc(sizeof *binding);
1331         if (binding == NULL)
1332                 return NULL;
1333
1334         binding->key = key;
1335         binding->button = button;
1336         binding->modifier = modifier;
1337         binding->handler = handler;
1338         binding->data = data;
1339         wl_list_insert(compositor->binding_list.prev, &binding->link);
1340
1341         return binding;
1342 }
1343
1344 WL_EXPORT void
1345 wlsc_binding_destroy(struct wlsc_binding *binding)
1346 {
1347         wl_list_remove(&binding->link);
1348         free(binding);
1349 }
1350
1351 static void
1352 update_modifier_state(struct wlsc_input_device *device,
1353                       uint32_t key, uint32_t state)
1354 {
1355         uint32_t modifier;
1356
1357         switch (key) {
1358         case KEY_LEFTCTRL:
1359         case KEY_RIGHTCTRL:
1360                 modifier = MODIFIER_CTRL;
1361                 break;
1362
1363         case KEY_LEFTALT:
1364         case KEY_RIGHTALT:
1365                 modifier = MODIFIER_ALT;
1366                 break;
1367
1368         case KEY_LEFTMETA:
1369         case KEY_RIGHTMETA:
1370                 modifier = MODIFIER_SUPER;
1371                 break;
1372
1373         default:
1374                 modifier = 0;
1375                 break;
1376         }
1377
1378         if (state)
1379                 device->modifier_state |= modifier;
1380         else
1381                 device->modifier_state &= ~modifier;
1382 }
1383
1384 WL_EXPORT void
1385 notify_key(struct wl_input_device *device,
1386            uint32_t time, uint32_t key, uint32_t state)
1387 {
1388         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1389         struct wlsc_compositor *compositor =
1390                 (struct wlsc_compositor *) device->compositor;
1391         uint32_t *k, *end;
1392         struct wlsc_binding *b;
1393
1394         if (state)
1395                 wlsc_compositor_idle_inhibit(compositor);
1396         else
1397                 wlsc_compositor_idle_release(compositor);
1398
1399         wl_list_for_each(b, &compositor->binding_list, link) {
1400                 if (b->key == key &&
1401                     b->modifier == wd->modifier_state) {
1402                         b->handler(&wd->input_device,
1403                                    time, key, 0, state, b->data);
1404                         break;
1405                 }
1406         }
1407
1408         update_modifier_state(wd, key, state);
1409         end = device->keys.data + device->keys.size;
1410         for (k = device->keys.data; k < end; k++) {
1411                 if (*k == key)
1412                         *k = *--end;
1413         }
1414         device->keys.size = (void *) end - device->keys.data;
1415         if (state) {
1416                 k = wl_array_add(&device->keys, sizeof *k);
1417                 *k = key;
1418         }
1419
1420         if (device->keyboard_focus != NULL)
1421                 wl_client_post_event(device->keyboard_focus->client,
1422                                      &device->object,
1423                                      WL_INPUT_DEVICE_KEY, time, key, state);
1424 }
1425
1426 WL_EXPORT void
1427 notify_pointer_focus(struct wl_input_device *device,
1428                      uint32_t time, struct wlsc_output *output,
1429                      int32_t x, int32_t y)
1430 {
1431         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1432         struct wlsc_compositor *compositor =
1433                 (struct wlsc_compositor *) device->compositor;
1434         struct wlsc_surface *es;
1435         int32_t sx, sy;
1436
1437         if (output) {
1438                 device->x = x;
1439                 device->y = y;
1440                 es = pick_surface(device, &sx, &sy);
1441                 wl_input_device_set_pointer_focus(device,
1442                                                   &es->surface,
1443                                                   time, x, y, sx, sy);
1444
1445                 compositor->focus = 1;
1446
1447                 wd->sprite->x = device->x - wd->hotspot_x;
1448                 wd->sprite->y = device->y - wd->hotspot_y;
1449         } else {
1450                 wl_input_device_set_pointer_focus(device, NULL,
1451                                                   time, 0, 0, 0, 0);
1452                 compositor->focus = 0;
1453         }
1454
1455         wlsc_surface_damage(wd->sprite);
1456 }
1457
1458 WL_EXPORT void
1459 notify_keyboard_focus(struct wl_input_device *device,
1460                       uint32_t time, struct wlsc_output *output,
1461                       struct wl_array *keys)
1462 {
1463         struct wlsc_input_device *wd =
1464                 (struct wlsc_input_device *) device;
1465         struct wlsc_compositor *compositor =
1466                 (struct wlsc_compositor *) device->compositor;
1467         struct wlsc_surface *es;
1468         uint32_t *k, *end;
1469
1470         if (!wl_list_empty(&compositor->surface_list))
1471                 es = container_of(compositor->surface_list.next,
1472                                   struct wlsc_surface, link);
1473         else
1474                 es = NULL;
1475
1476         if (output) {
1477                 wl_array_copy(&wd->input_device.keys, keys);
1478                 wd->modifier_state = 0;
1479                 end = device->keys.data + device->keys.size;
1480                 for (k = device->keys.data; k < end; k++) {
1481                         wlsc_compositor_idle_inhibit(compositor);
1482                         update_modifier_state(wd, *k, 1);
1483                 }
1484
1485                 if (es->surface.client)
1486                         wl_input_device_set_keyboard_focus(&wd->input_device,
1487                                                            &es->surface, time);
1488         } else {
1489                 end = device->keys.data + device->keys.size;
1490                 for (k = device->keys.data; k < end; k++)
1491                         wlsc_compositor_idle_release(compositor);
1492
1493                 wd->modifier_state = 0;
1494                 wl_input_device_set_keyboard_focus(&wd->input_device,
1495                                                    NULL, time);
1496         }
1497 }
1498
1499
1500 static void
1501 input_device_attach(struct wl_client *client,
1502                     struct wl_input_device *device_base,
1503                     uint32_t time,
1504                     struct wl_buffer *buffer, int32_t x, int32_t y)
1505 {
1506         struct wlsc_input_device *device =
1507                 (struct wlsc_input_device *) device_base;
1508
1509         if (time < device->input_device.pointer_focus_time)
1510                 return;
1511         if (device->input_device.pointer_focus == NULL)
1512                 return;
1513         if (device->input_device.pointer_focus->client != client)
1514                 return;
1515
1516         if (buffer == NULL) {
1517                 wlsc_input_device_set_pointer_image(device,
1518                                                     WLSC_POINTER_LEFT_PTR);
1519                 return;
1520         }
1521
1522         wlsc_input_device_attach_buffer(device, buffer, x, y);
1523 }
1524
1525 const static struct wl_input_device_interface input_device_interface = {
1526         input_device_attach,
1527 };
1528
1529 WL_EXPORT void
1530 wlsc_input_device_init(struct wlsc_input_device *device,
1531                        struct wlsc_compositor *ec)
1532 {
1533         wl_input_device_init(&device->input_device, &ec->compositor);
1534
1535         device->input_device.object.interface = &wl_input_device_interface;
1536         device->input_device.object.implementation =
1537                 (void (**)(void)) &input_device_interface;
1538         wl_display_add_object(ec->wl_display, &device->input_device.object);
1539         wl_display_add_global(ec->wl_display, &device->input_device.object, NULL);
1540
1541         device->sprite = wlsc_surface_create(ec,
1542                                              device->input_device.x,
1543                                              device->input_device.y, 32, 32);
1544         wl_list_insert(&ec->surface_list, &device->sprite->link);
1545
1546         device->hotspot_x = 16;
1547         device->hotspot_y = 16;
1548         device->modifier_state = 0;
1549
1550         device->input_device.motion_grab.interface = &motion_grab_interface;
1551
1552         wl_list_insert(ec->input_device_list.prev, &device->link);
1553
1554         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1555 }
1556
1557 static void
1558 wlsc_output_post_geometry(struct wl_client *client,
1559                           struct wl_object *global, uint32_t version)
1560 {
1561         struct wlsc_output *output =
1562                 container_of(global, struct wlsc_output, object);
1563         struct wlsc_mode *mode;
1564
1565         wl_client_post_event(client, global,
1566                              WL_OUTPUT_GEOMETRY,
1567                              output->x,
1568                              output->y,
1569                              output->mm_width,
1570                              output->mm_height,
1571                              output->subpixel,
1572                              output->make, output->model);
1573
1574         wl_list_for_each (mode, &output->mode_list, link) {
1575                 wl_client_post_event(client, global,
1576                                      WL_OUTPUT_MODE,
1577                                      mode->flags,
1578                                      mode->width, mode->height, mode->refresh);
1579         }
1580 }
1581
1582 static const char vertex_shader[] =
1583         "uniform mat4 proj;\n"
1584         "attribute vec2 position;\n"
1585         "attribute vec2 texcoord;\n"
1586         "varying vec2 v_texcoord;\n"
1587         "void main()\n"
1588         "{\n"
1589         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1590         "   v_texcoord = texcoord;\n"
1591         "}\n";
1592
1593 static const char texture_fragment_shader[] =
1594         "precision mediump float;\n"
1595         "varying vec2 v_texcoord;\n"
1596         "uniform sampler2D tex;\n"
1597         "void main()\n"
1598         "{\n"
1599         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1600         "}\n";
1601
1602 static const char solid_fragment_shader[] =
1603         "precision mediump float;\n"
1604         "uniform vec4 color;\n"
1605         "void main()\n"
1606         "{\n"
1607         "   gl_FragColor = color\n;"
1608         "}\n";
1609
1610 static int
1611 compile_shader(GLenum type, const char *source)
1612 {
1613         GLuint s;
1614         char msg[512];
1615         GLint status;
1616
1617         s = glCreateShader(type);
1618         glShaderSource(s, 1, &source, NULL);
1619         glCompileShader(s);
1620         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
1621         if (!status) {
1622                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
1623                 fprintf(stderr, "shader info: %s\n", msg);
1624                 return GL_NONE;
1625         }
1626
1627         return s;
1628 }
1629
1630 static int
1631 wlsc_shader_init(struct wlsc_shader *shader,
1632                  const char *vertex_source, const char *fragment_source)
1633 {
1634         char msg[512];
1635         GLint status;
1636
1637         shader->vertex_shader =
1638                 compile_shader(GL_VERTEX_SHADER, vertex_source);
1639         shader->fragment_shader =
1640                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1641
1642         shader->program = glCreateProgram();
1643         glAttachShader(shader->program, shader->vertex_shader);
1644         glAttachShader(shader->program, shader->fragment_shader);
1645         glBindAttribLocation(shader->program, 0, "position");
1646         glBindAttribLocation(shader->program, 1, "texcoord");
1647
1648         glLinkProgram(shader->program);
1649         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1650         if (!status) {
1651                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1652                 fprintf(stderr, "link info: %s\n", msg);
1653                 return -1;
1654         }
1655
1656         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1657         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
1658
1659         return 0;
1660 }
1661
1662 static int
1663 init_solid_shader(struct wlsc_shader *shader,
1664                   GLuint vertex_shader, const char *fragment_source)
1665 {
1666         GLint status;
1667         char msg[512];
1668
1669         shader->vertex_shader = vertex_shader;
1670         shader->fragment_shader =
1671                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1672
1673         shader->program = glCreateProgram();
1674         glAttachShader(shader->program, shader->vertex_shader);
1675         glAttachShader(shader->program, shader->fragment_shader);
1676         glBindAttribLocation(shader->program, 0, "position");
1677         glBindAttribLocation(shader->program, 1, "texcoord");
1678
1679         glLinkProgram(shader->program);
1680         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1681         if (!status) {
1682                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1683                 fprintf(stderr, "link info: %s\n", msg);
1684                 return -1;
1685         }
1686
1687         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1688         shader->color_uniform = glGetUniformLocation(shader->program, "color");
1689
1690         return 0;
1691 }
1692
1693 WL_EXPORT void
1694 wlsc_output_destroy(struct wlsc_output *output)
1695 {
1696         pixman_region32_fini(&output->region);
1697         pixman_region32_fini(&output->previous_damage);
1698         destroy_surface(&output->background->surface.resource, NULL);
1699 }
1700
1701 WL_EXPORT void
1702 wlsc_output_move(struct wlsc_output *output, int x, int y)
1703 {
1704         struct wlsc_compositor *c = output->compositor;
1705         int flip;
1706
1707         output->x = x;
1708         output->y = y;
1709
1710         if (output->background) {
1711                 output->background->x = x;
1712                 output->background->y = y;
1713         }
1714
1715         pixman_region32_init(&output->previous_damage);
1716         pixman_region32_init_rect(&output->region, x, y,
1717                                   output->current->width,
1718                                   output->current->height);
1719
1720         wlsc_matrix_init(&output->matrix);
1721         wlsc_matrix_translate(&output->matrix,
1722                               -output->x - output->current->width / 2.0,
1723                               -output->y - output->current->height / 2.0, 0);
1724
1725         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1726         wlsc_matrix_scale(&output->matrix,
1727                           2.0 / output->current->width,
1728                           flip * 2.0 / output->current->height, 1);
1729
1730         pixman_region32_union(&c->damage, &c->damage, &output->region);
1731 }
1732
1733 WL_EXPORT void
1734 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1735                  int x, int y, int width, int height, uint32_t flags)
1736 {
1737         output->compositor = c;
1738         output->x = x;
1739         output->y = y;
1740         output->mm_width = width;
1741         output->mm_height = height;
1742
1743         output->background =
1744                 background_create(output, option_background);
1745
1746         if (output->background != NULL)
1747                 wl_list_insert(c->surface_list.prev,
1748                                &output->background->link);
1749
1750         output->flags = flags;
1751         wlsc_output_move(output, x, y);
1752
1753         output->scanout_buffer_destroy_listener.func =
1754                 output_handle_scanout_buffer_destroy;
1755         wl_list_init(&output->scanout_buffer_destroy_listener.link);
1756
1757         output->object.interface = &wl_output_interface;
1758         wl_display_add_object(c->wl_display, &output->object);
1759         wl_display_add_global(c->wl_display, &output->object,
1760                               wlsc_output_post_geometry);
1761 }
1762
1763 static void
1764 shm_buffer_created(struct wl_buffer *buffer)
1765 {
1766         struct wl_list *surfaces_attached_to;
1767
1768         surfaces_attached_to = malloc(sizeof *surfaces_attached_to);
1769         if (!surfaces_attached_to) {
1770                 buffer->user_data = NULL;
1771                 return;
1772         }
1773
1774         wl_list_init(surfaces_attached_to);
1775
1776         buffer->user_data = surfaces_attached_to;
1777 }
1778
1779 static void
1780 shm_buffer_damaged(struct wl_buffer *buffer,
1781                    int32_t x, int32_t y, int32_t width, int32_t height)
1782 {
1783         struct wl_list *surfaces_attached_to = buffer->user_data;
1784         struct wlsc_surface *es;
1785         GLsizei tex_width = wl_shm_buffer_get_stride(buffer) / 4;
1786
1787         wl_list_for_each(es, surfaces_attached_to, buffer_link) {
1788                 glBindTexture(GL_TEXTURE_2D, es->texture);
1789                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1790                              tex_width, buffer->height, 0,
1791                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1792                              wl_shm_buffer_get_data(buffer));
1793                 /* Hmm, should use glTexSubImage2D() here but GLES2 doesn't
1794                  * support any unpack attributes except GL_UNPACK_ALIGNMENT. */
1795         }
1796 }
1797
1798 static void
1799 shm_buffer_destroyed(struct wl_buffer *buffer)
1800 {
1801         struct wl_list *surfaces_attached_to = buffer->user_data;
1802         struct wlsc_surface *es, *next;
1803
1804         wl_list_for_each_safe(es, next, surfaces_attached_to, buffer_link) {
1805                 wl_list_remove(&es->buffer_link);
1806                 wl_list_init(&es->buffer_link);
1807         }
1808
1809         free(surfaces_attached_to);
1810 }
1811
1812 const static struct wl_shm_callbacks shm_callbacks = {
1813         shm_buffer_created,
1814         shm_buffer_damaged,
1815         shm_buffer_destroyed
1816 };
1817
1818 WL_EXPORT int
1819 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1820 {
1821         struct wl_event_loop *loop;
1822         const char *extensions;
1823
1824         ec->wl_display = display;
1825
1826         wl_compositor_init(&ec->compositor, &compositor_interface, display);
1827
1828         ec->shm = wl_shm_init(display, &shm_callbacks);
1829
1830         ec->image_target_texture_2d =
1831                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
1832         ec->image_target_renderbuffer_storage = (void *)
1833                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
1834         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
1835         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
1836         ec->bind_display =
1837                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
1838         ec->unbind_display =
1839                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
1840
1841         extensions = (const char *) glGetString(GL_EXTENSIONS);
1842         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
1843                 fprintf(stderr,
1844                         "GL_EXT_texture_format_BGRA8888 not available\n");
1845                 return -1;
1846         }
1847
1848         extensions =
1849                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
1850         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
1851                 ec->has_bind_display = 1;
1852         if (ec->has_bind_display)
1853                 ec->bind_display(ec->display, ec->wl_display);
1854
1855         wl_list_init(&ec->surface_list);
1856         wl_list_init(&ec->input_device_list);
1857         wl_list_init(&ec->output_list);
1858         wl_list_init(&ec->binding_list);
1859         wl_list_init(&ec->animation_list);
1860         wlsc_spring_init(&ec->fade.spring, 0.8, 0.0, 0.0);
1861         ec->fade.animation.frame = fade_frame;
1862         wl_list_init(&ec->fade.animation.link);
1863
1864         wlsc_compositor_add_binding(ec, KEY_BACKSPACE, 0,
1865                                     MODIFIER_CTRL | MODIFIER_ALT,
1866                                     terminate_binding, ec);
1867
1868         create_pointer_images(ec);
1869
1870         screenshooter_create(ec);
1871
1872         glActiveTexture(GL_TEXTURE0);
1873
1874         if (wlsc_shader_init(&ec->texture_shader,
1875                              vertex_shader, texture_fragment_shader) < 0)
1876                 return -1;
1877         if (init_solid_shader(&ec->solid_shader,
1878                               ec->texture_shader.vertex_shader,
1879                               solid_fragment_shader) < 0)
1880                 return -1;
1881
1882         loop = wl_display_get_event_loop(ec->wl_display);
1883         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
1884         wl_event_source_timer_update(ec->idle_source, option_idle_time * 1000);
1885
1886         pixman_region32_init(&ec->damage);
1887         wlsc_compositor_schedule_repaint(ec);
1888
1889         return 0;
1890 }
1891
1892 static int on_term_signal(int signal_number, void *data)
1893 {
1894         struct wlsc_compositor *ec = data;
1895
1896         wl_display_terminate(ec->wl_display);
1897
1898         return 1;
1899 }
1900
1901 static void *
1902 load_module(const char *name, const char *entrypoint, void **handle)
1903 {
1904         char path[PATH_MAX];
1905         void *module, *init;
1906
1907         if (name[0] != '/')
1908                 snprintf(path, sizeof path, MODULEDIR "/%s", name);
1909         else
1910                 snprintf(path, sizeof path, "%s", name);
1911
1912         module = dlopen(path, RTLD_LAZY);
1913         if (!module) {
1914                 fprintf(stderr,
1915                         "failed to load module: %s\n", dlerror());
1916                 return NULL;
1917         }
1918
1919         init = dlsym(module, entrypoint);
1920         if (!init) {
1921                 fprintf(stderr,
1922                         "failed to lookup init function: %s\n", dlerror());
1923                 return NULL;
1924         }
1925
1926         return init;
1927 }
1928
1929 int main(int argc, char *argv[])
1930 {
1931         struct wl_display *display;
1932         struct wlsc_compositor *ec;
1933         struct wl_event_loop *loop;
1934         int o, xserver = 0;
1935         void *shell_module, *backend_module;
1936         int (*shell_init)(struct wlsc_compositor *ec);
1937         struct wlsc_compositor
1938                 *(*backend_init)(struct wl_display *display, char *options);
1939         char *backend = NULL;
1940         char *backend_options = "";
1941         char *shell = NULL;
1942         char *p;
1943
1944         static const char opts[] = "B:b:o:S:i:s:x";
1945         static const struct option longopts[ ] = {
1946                 { "backend", 1, NULL, 'B' },
1947                 { "backend-options", 1, NULL, 'o' },
1948                 { "background", 1, NULL, 'b' },
1949                 { "socket", 1, NULL, 'S' },
1950                 { "idle-time", 1, NULL, 'i' },
1951                 { "shell", 1, NULL, 's' },
1952                 { "xserver", 0, NULL, 'x' },
1953                 { NULL, }
1954         };
1955
1956         while (o = getopt_long(argc, argv, opts, longopts, &o), o > 0) {
1957                 switch (o) {
1958                 case 'b':
1959                         option_background = optarg;
1960                         break;
1961                 case 'B':
1962                         backend = optarg;
1963                         break;
1964                 case 'o':
1965                         backend_options = optarg;
1966                         break;
1967                 case 'S':
1968                         option_socket_name = optarg;
1969                         break;
1970                 case 'i':
1971                         option_idle_time = strtol(optarg, &p, 0);
1972                         if (*p != '\0') {
1973                                 fprintf(stderr,
1974                                         "invalid idle time option: %s\n",
1975                                         optarg);
1976                                 exit(EXIT_FAILURE);
1977                         }
1978                         break;
1979                 case 's':
1980                         shell = optarg;
1981                         break;
1982                 case 'x':
1983                         xserver = 1;
1984                         break;
1985                 }
1986         }
1987
1988         display = wl_display_create();
1989
1990         ec = NULL;
1991
1992         if (!backend) {
1993                 if (getenv("WAYLAND_DISPLAY"))
1994                         backend = "wayland-backend.so";
1995                 else if (getenv("DISPLAY"))
1996                         backend = "x11-backend.so";
1997                 else if (getenv("OPENWFD"))
1998                         backend = "openwfd-backend.so";
1999                 else
2000                         backend = "drm-backend.so";
2001         }
2002
2003         if (!shell)
2004                 shell = "desktop-shell.so";
2005
2006         backend_init = load_module(backend, "backend_init", &backend_module);
2007         if (!backend_init)
2008                 exit(EXIT_FAILURE);
2009
2010         shell_init = load_module(shell, "shell_init", &shell_module);
2011         if (!shell_init)
2012                 exit(EXIT_FAILURE);
2013
2014         ec = backend_init(display, backend_options);
2015         if (ec == NULL) {
2016                 fprintf(stderr, "failed to create compositor\n");
2017                 exit(EXIT_FAILURE);
2018         }
2019
2020         if (shell_init(ec) < 0)
2021                 exit(EXIT_FAILURE);
2022
2023         if (xserver)
2024                 wlsc_xserver_init(display);
2025
2026         if (wl_display_add_socket(display, option_socket_name)) {
2027                 fprintf(stderr, "failed to add socket: %m\n");
2028                 exit(EXIT_FAILURE);
2029         }
2030
2031         loop = wl_display_get_event_loop(ec->wl_display);
2032         wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
2033         wl_event_loop_add_signal(loop, SIGINT, on_term_signal, ec);
2034
2035         wl_list_init(&child_process_list);
2036         wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler, NULL);
2037
2038         wl_display_run(display);
2039
2040         if (ec->has_bind_display)
2041                 ec->unbind_display(ec->display, display);
2042         wl_display_destroy(display);
2043
2044         ec->destroy(ec);
2045
2046         return 0;
2047 }