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 new_damage, total_damage;
 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         wl_list_for_each(es, &ec->surface_list, link)
 749                 pixman_region32_union(&ec->damage, &ec->damage, &es->damage);
 750
 751         pixman_region32_init(&new_damage);
 752         pixman_region32_init(&total_damage);
 753         pixman_region32_intersect(&new_damage, &ec->damage, &output->region);
 754         pixman_region32_subtract(&ec->damage, &ec->damage, &new_damage);
 755         pixman_region32_union(&total_damage, &new_damage,
 756                               &output->previous_damage_region);
 757         pixman_region32_copy(&output->previous_damage_region, &new_damage);
 758
 759         device = (struct wlsc_input_device *) ec->input_device;
 760         if (ec->focus && ec->fade.spring.current < 0.001) {
 761                 if (!wl_list_empty(&device->sprite->link)) {
 762                         wl_list_remove(&device->sprite->link);
 763                         wl_list_init(&device->sprite->link);
 764                 }
 765                 if (output->set_hardware_cursor(output, device) < 0)
 766                         wl_list_insert(&ec->surface_list,
 767                                        &device->sprite->link);
 768         } else {
 769                 output->set_hardware_cursor(output, NULL);
 770                 if (wl_list_empty(&device->sprite->link))
 771                         wl_list_insert(&ec->surface_list,
 772                                        &device->sprite->link);
 773         }
 774
 775         es = container_of(ec->surface_list.next, struct wlsc_surface, link);
 776
 777         if (es->visual == &ec->compositor.rgb_visual &&
 778             output->prepare_scanout_surface(output, es) == 0) {
 779                 /* We're drawing nothing now,
 780                  * draw the damaged regions later. */
 781                 pixman_region32_union(&ec->damage, &ec->damage, &total_damage);
 782
 783                 output->scanout_buffer = es->buffer;
 784                 output->scanout_buffer->busy_count++;
 785
 786                 wl_list_remove(&output->scanout_buffer_destroy_listener.link);
 787                 wl_list_insert(output->scanout_buffer->resource.destroy_listener_list.prev,
 788                                &output->scanout_buffer_destroy_listener.link);
 789
 790                 return;
 791         }
 792
 793         if (es->fullscreen_output == output) {
 794                 if (es->width < output->current->width ||
 795                     es->height < output->current->height)
 796                         glClear(GL_COLOR_BUFFER_BIT);
 797                 wlsc_surface_draw(es, output, &total_damage);
 798         } else {
 799                 glUseProgram(ec->texture_shader.program);
 800                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 801                         if (ec->overlay == es)
 802                                 continue;
 803
 804                         wlsc_surface_draw(es, output, &total_damage);
 805                 }
 806         }
 807
 808         if (ec->overlay)
 809                 wlsc_surface_draw(ec->overlay, output, &total_damage);
 810
 811         if (ec->fade.spring.current > 0.001)
 812                 fade_output(output, ec->fade.spring.current, &total_damage);
 813 }
 814
 815 static void
 816 repaint(void *data, int msecs)
 817 {
 818         struct wlsc_output *output = data;
 819         struct wlsc_compositor *compositor = output->compositor;
 820         struct wlsc_surface *es;
 821         struct wlsc_animation *animation, *next;
 822
 823         wlsc_output_repaint(output);
 824         output->repaint_needed = 0;
 825         output->repaint_scheduled = 1;
 826         output->present(output);
 827
 828         /* FIXME: Keep the surfaces in an per-output list. */
 829         wl_list_for_each(es, &compositor->surface_list, link) {
 830                 if (es->output == output) {
 831                         wl_display_post_frame(compositor->wl_display,
 832                                               &es->surface, msecs);
 833                 }
 834         }
 835
 836         wl_list_for_each_safe(animation, next,
 837                               &compositor->animation_list, link)
 838                 animation->frame(animation, output, msecs);
 839 }
 840
 841 static void
 842 idle_repaint(void *data)
 843 {
 844         repaint(data, wlsc_compositor_get_time());
 845 }
 846
 847 WL_EXPORT void
 848 wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
 849 {
 850         wlsc_buffer_post_release(output->scanout_buffer);
 851         output->scanout_buffer = NULL;
 852         output->repaint_scheduled = 0;
 853
 854         if (output->repaint_needed)
 855                 repaint(output, msecs);
 856 }
 857
 858 WL_EXPORT void
 859 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 860 {
 861         struct wlsc_output *output;
 862         struct wl_event_loop *loop;
 863
 864         if (compositor->state == WLSC_COMPOSITOR_SLEEPING)
 865                 return;
 866
 867         loop = wl_display_get_event_loop(compositor->wl_display);
 868         wl_list_for_each(output, &compositor->output_list, link) {
 869                 output->repaint_needed = 1;
 870                 if (output->repaint_scheduled)
 871                         continue;
 872
 873                 wl_event_loop_add_idle(loop, idle_repaint, output);
 874                 output->repaint_scheduled = 1;
 875         }
 876 }
 877
 878 WL_EXPORT void
 879 wlsc_compositor_fade(struct wlsc_compositor *compositor, float tint)
 880 {
 881         int done;
 882
 883         done = wlsc_spring_done(&compositor->fade.spring);
 884         compositor->fade.spring.target = tint;
 885         if (wlsc_spring_done(&compositor->fade.spring))
 886                 return;
 887
 888         if (done)
 889                 compositor->fade.spring.timestamp =
 890                         wlsc_compositor_get_time();
 891
 892         wlsc_compositor_damage_all(compositor);
 893         if (wl_list_empty(&compositor->fade.animation.link))
 894                 wl_list_insert(compositor->animation_list.prev,
 895                                &compositor->fade.animation.link);
 896 }
 897
 898 static void
 899 surface_destroy(struct wl_client *client,
 900                 struct wl_surface *surface)
 901 {
 902         wl_resource_destroy(&surface->resource, client,
 903                             wlsc_compositor_get_time());
 904 }
 905
 906 WL_EXPORT void
 907 wlsc_surface_assign_output(struct wlsc_surface *es)
 908 {
 909         struct wlsc_compositor *ec = es->compositor;
 910         struct wlsc_output *output;
 911
 912         struct wlsc_output *tmp = es->output;
 913         es->output = NULL;
 914
 915         wl_list_for_each(output, &ec->output_list, link) {
 916                 if (pixman_region32_contains_point(&output->region,
 917                                                    es->x, es->y, NULL)) {
 918                         if (output != tmp)
 919                                 printf("assiging surface %p to output %p\n",
 920                                        es, output);
 921                         es->output = output;
 922                 }
 923         }
 924
 925         if (es->output == NULL) {
 926                 printf("no output found\n");
 927                 es->output = container_of(ec->output_list.next,
 928                                           struct wlsc_output, link);
 929         }
 930 }
 931
 932 static void
 933 surface_attach(struct wl_client *client,
 934                struct wl_surface *surface, struct wl_buffer *buffer,
 935                int32_t x, int32_t y)
 936 {
 937         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 938
 939         /* FIXME: This damages the entire old surface, but we should
 940          * really just damage the part that's no longer covered by the
 941          * surface.  Anything covered by the new surface will be
 942          * damaged by the client. */
 943         if (es->buffer)
 944                 wlsc_surface_damage(es);
 945
 946         buffer->busy_count++;
 947         wlsc_buffer_post_release(es->buffer);
 948
 949         es->buffer = buffer;
 950         wl_list_remove(&es->buffer_destroy_listener.link);
 951         wl_list_insert(es->buffer->resource.destroy_listener_list.prev,
 952                        &es->buffer_destroy_listener.link);
 953
 954         es->x += x;
 955         es->y += y;
 956         es->width = buffer->width;
 957         es->height = buffer->height;
 958         if (x != 0 || y != 0)
 959                 wlsc_surface_assign_output(es);
 960         if (es->visual == NULL)
 961                 wl_list_insert(&es->compositor->surface_list, &es->link);
 962
 963         wlsc_buffer_attach(buffer, surface);
 964
 965         es->compositor->shell->attach(es->compositor->shell, es);
 966 }
 967
 968 static void
 969 surface_damage(struct wl_client *client,
 970                struct wl_surface *surface,
 971                int32_t x, int32_t y, int32_t width, int32_t height)
 972 {
 973         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 974
 975         wlsc_surface_damage_rectangle(es, x, y, width, height);
 976 }
 977
 978 const static struct wl_surface_interface surface_interface = {
 979         surface_destroy,
 980         surface_attach,
 981         surface_damage
 982 };
 983
 984 static void
 985 wlsc_input_device_attach(struct wlsc_input_device *device,
 986                          int x, int y, int width, int height)
 987 {
 988         wlsc_surface_damage(device->sprite);
 989
 990         device->hotspot_x = x;
 991         device->hotspot_y = y;
 992
 993         device->sprite->x = device->input_device.x - device->hotspot_x;
 994         device->sprite->y = device->input_device.y - device->hotspot_y;
 995         device->sprite->width = width;
 996         device->sprite->height = height;
 997
 998         wlsc_surface_damage(device->sprite);
 999 }
1000
1001 static void
1002 wlsc_input_device_attach_buffer(struct wlsc_input_device *device,
1003                                 struct wl_buffer *buffer, int x, int y)
1004 {
1005         wlsc_buffer_attach(buffer, &device->sprite->surface);
1006         wlsc_input_device_attach(device, x, y, buffer->width, buffer->height);
1007 }
1008
1009 static void
1010 wlsc_input_device_attach_sprite(struct wlsc_input_device *device,
1011                                 struct wlsc_sprite *sprite, int x, int y)
1012 {
1013         wlsc_sprite_attach(sprite, &device->sprite->surface);
1014         wlsc_input_device_attach(device, x, y, sprite->width, sprite->height);
1015 }
1016
1017 WL_EXPORT void
1018 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
1019                                     enum wlsc_pointer_type type)
1020 {
1021         struct wlsc_compositor *compositor =
1022                 (struct wlsc_compositor *) device->input_device.compositor;
1023
1024         wlsc_input_device_attach_sprite(device,
1025                                         compositor->pointer_sprites[type],
1026                                         pointer_images[type].hotspot_x,
1027                                         pointer_images[type].hotspot_y);
1028 }
1029
1030 static void
1031 compositor_create_surface(struct wl_client *client,
1032                           struct wl_compositor *compositor, uint32_t id)
1033 {
1034         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
1035         struct wlsc_surface *surface;
1036
1037         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
1038         if (surface == NULL) {
1039                 wl_client_post_no_memory(client);
1040                 return;
1041         }
1042
1043         surface->surface.resource.destroy = destroy_surface;
1044
1045         surface->surface.resource.object.id = id;
1046         surface->surface.resource.object.interface = &wl_surface_interface;
1047         surface->surface.resource.object.implementation =
1048                 (void (**)(void)) &surface_interface;
1049         surface->surface.client = client;
1050
1051         wl_client_add_resource(client, &surface->surface.resource);
1052 }
1053
1054 const static struct wl_compositor_interface compositor_interface = {
1055         compositor_create_surface,
1056 };
1057
1058 static void
1059 wlsc_surface_transform(struct wlsc_surface *surface,
1060                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
1061 {
1062         *sx = x - surface->x;
1063         *sy = y - surface->y;
1064 }
1065
1066 WL_EXPORT struct wlsc_surface *
1067 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
1068 {
1069         struct wlsc_compositor *ec =
1070                 (struct wlsc_compositor *) device->compositor;
1071         struct wlsc_surface *es;
1072
1073         wl_list_for_each(es, &ec->surface_list, link) {
1074                 if (es->surface.client == NULL)
1075                         continue;
1076                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
1077                 if (0 <= *sx && *sx < es->width &&
1078                     0 <= *sy && *sy < es->height)
1079                         return es;
1080         }
1081
1082         return NULL;
1083 }
1084
1085
1086 static void
1087 motion_grab_motion(struct wl_grab *grab,
1088                    uint32_t time, int32_t x, int32_t y)
1089 {
1090         struct wlsc_input_device *device =
1091                 (struct wlsc_input_device *) grab->input_device;
1092         struct wlsc_surface *es =
1093                 (struct wlsc_surface *) device->input_device.pointer_focus;
1094         int32_t sx, sy;
1095
1096         wlsc_surface_transform(es, x, y, &sx, &sy);
1097         wl_client_post_event(es->surface.client,
1098                              &device->input_device.object,
1099                              WL_INPUT_DEVICE_MOTION,
1100                              time, x, y, sx, sy);
1101 }
1102
1103 static void
1104 motion_grab_button(struct wl_grab *grab,
1105                    uint32_t time, int32_t button, int32_t state)
1106 {
1107         wl_client_post_event(grab->input_device->pointer_focus->client,
1108                              &grab->input_device->object,
1109                              WL_INPUT_DEVICE_BUTTON,
1110                              time, button, state);
1111 }
1112
1113 static void
1114 motion_grab_end(struct wl_grab *grab, uint32_t time)
1115 {
1116 }
1117
1118 static const struct wl_grab_interface motion_grab_interface = {
1119         motion_grab_motion,
1120         motion_grab_button,
1121         motion_grab_end
1122 };
1123
1124 WL_EXPORT void
1125 wlsc_compositor_wake(struct wlsc_compositor *compositor)
1126 {
1127         if (compositor->idle_inhibit)
1128                 return;
1129
1130         wlsc_compositor_fade(compositor, 0.0);
1131         compositor->state = WLSC_COMPOSITOR_ACTIVE;
1132
1133         wl_event_source_timer_update(compositor->idle_source,
1134                                      option_idle_time * 1000);
1135 }
1136
1137 static void
1138 wlsc_compositor_idle_inhibit(struct wlsc_compositor *compositor)
1139 {
1140         wlsc_compositor_wake(compositor);
1141         compositor->idle_inhibit++;
1142 }
1143
1144 static void
1145 wlsc_compositor_idle_release(struct wlsc_compositor *compositor)
1146 {
1147         compositor->idle_inhibit--;
1148         wlsc_compositor_wake(compositor);
1149 }
1150
1151 static int
1152 idle_handler(void *data)
1153 {
1154         struct wlsc_compositor *compositor = data;
1155
1156         if (compositor->idle_inhibit)
1157                 return 1;
1158
1159         wlsc_compositor_fade(compositor, 1.0);
1160
1161         return 1;
1162 }
1163
1164 WL_EXPORT void
1165 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1166 {
1167         struct wlsc_surface *es;
1168         struct wlsc_compositor *ec =
1169                 (struct wlsc_compositor *) device->compositor;
1170         struct wlsc_output *output;
1171         const struct wl_grab_interface *interface;
1172         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1173         int32_t sx, sy;
1174         int x_valid = 0, y_valid = 0;
1175         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1176
1177         wlsc_compositor_wake(ec);
1178
1179         wl_list_for_each(output, &ec->output_list, link) {
1180                 if (output->x <= x && x <= output->x + output->current->width)
1181                         x_valid = 1;
1182
1183                 if (output->y <= y && y <= output->y + output->current->height)
1184                         y_valid = 1;
1185
1186                 /* FIXME: calculate this only on output addition/deletion */
1187                 if (output->x < min_x)
1188                         min_x = output->x;
1189                 if (output->y < min_y)
1190                         min_y = output->y;
1191
1192                 if (output->x + output->current->width > max_x)
1193                         max_x = output->x + output->current->width;
1194                 if (output->y + output->current->height > max_y)
1195                         max_y = output->y + output->current->height;
1196         }
1197
1198         if (!x_valid) {
1199                 if (x < min_x)
1200                         x = min_x;
1201                 else if (x >= max_x)
1202                         x = max_x;
1203         }
1204         if (!y_valid) {
1205                 if (y < min_y)
1206                         y = min_y;
1207                 else  if (y >= max_y)
1208                         y = max_y;
1209         }
1210
1211         device->x = x;
1212         device->y = y;
1213
1214         if (device->grab) {
1215                 interface = device->grab->interface;
1216                 interface->motion(device->grab, time, x, y);
1217         } else {
1218                 es = pick_surface(device, &sx, &sy);
1219                 wl_input_device_set_pointer_focus(device,
1220                                                   &es->surface,
1221                                                   time, x, y, sx, sy);
1222                 if (es)
1223                         wl_client_post_event(es->surface.client,
1224                                              &device->object,
1225                                              WL_INPUT_DEVICE_MOTION,
1226                                              time, x, y, sx, sy);
1227         }
1228
1229         wlsc_surface_damage(wd->sprite);
1230
1231         wd->sprite->x = device->x - wd->hotspot_x;
1232         wd->sprite->y = device->y - wd->hotspot_y;
1233
1234         wlsc_surface_damage(wd->sprite);
1235 }
1236
1237 WL_EXPORT void
1238 wlsc_surface_activate(struct wlsc_surface *surface,
1239                       struct wlsc_input_device *device, uint32_t time)
1240 {
1241         struct wlsc_shell *shell = surface->compositor->shell;
1242
1243         wlsc_surface_raise(surface);
1244         if (device->selection)
1245                 shell->set_selection_focus(shell,
1246                                            device->selection,
1247                                            &surface->surface, time);
1248
1249         wl_input_device_set_keyboard_focus(&device->input_device,
1250                                            &surface->surface,
1251                                            time);
1252 }
1253
1254 struct wlsc_binding {
1255         uint32_t key;
1256         uint32_t button;
1257         uint32_t modifier;
1258         wlsc_binding_handler_t handler;
1259         void *data;
1260         struct wl_list link;
1261 };
1262
1263 WL_EXPORT void
1264 notify_button(struct wl_input_device *device,
1265               uint32_t time, int32_t button, int32_t state)
1266 {
1267         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1268         struct wlsc_compositor *compositor =
1269                 (struct wlsc_compositor *) device->compositor;
1270         struct wlsc_binding *b;
1271         struct wlsc_surface *surface =
1272                 (struct wlsc_surface *) device->pointer_focus;
1273
1274         if (state)
1275                 wlsc_compositor_idle_inhibit(compositor);
1276         else
1277                 wlsc_compositor_idle_release(compositor);
1278
1279         if (state && surface && device->grab == NULL) {
1280                 wlsc_surface_activate(surface, wd, time);
1281                 wl_input_device_start_grab(device,
1282                                            &device->motion_grab,
1283                                            button, time);
1284         }
1285
1286         wl_list_for_each(b, &compositor->binding_list, link) {
1287                 if (b->button == button &&
1288                     b->modifier == wd->modifier_state && state) {
1289                         b->handler(&wd->input_device,
1290                                    time, 0, button, state, b->data);
1291                         break;
1292                 }
1293         }
1294
1295         if (device->grab)
1296                 device->grab->interface->button(device->grab, time,
1297                                                 button, state);
1298
1299         if (!state && device->grab && device->grab_button == button)
1300                 wl_input_device_end_grab(device, time);
1301 }
1302
1303 static void
1304 terminate_binding(struct wl_input_device *device, uint32_t time,
1305                   uint32_t key, uint32_t button, uint32_t state, void *data)
1306 {
1307         struct wlsc_compositor *compositor = data;
1308
1309         if (state)
1310                 wl_display_terminate(compositor->wl_display);
1311 }
1312
1313 WL_EXPORT struct wlsc_binding *
1314 wlsc_compositor_add_binding(struct wlsc_compositor *compositor,
1315                             uint32_t key, uint32_t button, uint32_t modifier,
1316                             wlsc_binding_handler_t handler, void *data)
1317 {
1318         struct wlsc_binding *binding;
1319
1320         binding = malloc(sizeof *binding);
1321         if (binding == NULL)
1322                 return NULL;
1323
1324         binding->key = key;
1325         binding->button = button;
1326         binding->modifier = modifier;
1327         binding->handler = handler;
1328         binding->data = data;
1329         wl_list_insert(compositor->binding_list.prev, &binding->link);
1330
1331         return binding;
1332 }
1333
1334 WL_EXPORT void
1335 wlsc_binding_destroy(struct wlsc_binding *binding)
1336 {
1337         wl_list_remove(&binding->link);
1338         free(binding);
1339 }
1340
1341 static void
1342 update_modifier_state(struct wlsc_input_device *device,
1343                       uint32_t key, uint32_t state)
1344 {
1345         uint32_t modifier;
1346
1347         switch (key) {
1348         case KEY_LEFTCTRL:
1349         case KEY_RIGHTCTRL:
1350                 modifier = MODIFIER_CTRL;
1351                 break;
1352
1353         case KEY_LEFTALT:
1354         case KEY_RIGHTALT:
1355                 modifier = MODIFIER_ALT;
1356                 break;
1357
1358         case KEY_LEFTMETA:
1359         case KEY_RIGHTMETA:
1360                 modifier = MODIFIER_SUPER;
1361                 break;
1362
1363         default:
1364                 modifier = 0;
1365                 break;
1366         }
1367
1368         if (state)
1369                 device->modifier_state |= modifier;
1370         else
1371                 device->modifier_state &= ~modifier;
1372 }
1373
1374 WL_EXPORT void
1375 notify_key(struct wl_input_device *device,
1376            uint32_t time, uint32_t key, uint32_t state)
1377 {
1378         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1379         struct wlsc_compositor *compositor =
1380                 (struct wlsc_compositor *) device->compositor;
1381         uint32_t *k, *end;
1382         struct wlsc_binding *b;
1383
1384         if (state)
1385                 wlsc_compositor_idle_inhibit(compositor);
1386         else
1387                 wlsc_compositor_idle_release(compositor);
1388
1389         wl_list_for_each(b, &compositor->binding_list, link) {
1390                 if (b->key == key &&
1391                     b->modifier == wd->modifier_state) {
1392                         b->handler(&wd->input_device,
1393                                    time, key, 0, state, b->data);
1394                         break;
1395                 }
1396         }
1397
1398         update_modifier_state(wd, key, state);
1399         end = device->keys.data + device->keys.size;
1400         for (k = device->keys.data; k < end; k++) {
1401                 if (*k == key)
1402                         *k = *--end;
1403         }
1404         device->keys.size = (void *) end - device->keys.data;
1405         if (state) {
1406                 k = wl_array_add(&device->keys, sizeof *k);
1407                 *k = key;
1408         }
1409
1410         if (device->keyboard_focus != NULL)
1411                 wl_client_post_event(device->keyboard_focus->client,
1412                                      &device->object,
1413                                      WL_INPUT_DEVICE_KEY, time, key, state);
1414 }
1415
1416 WL_EXPORT void
1417 notify_pointer_focus(struct wl_input_device *device,
1418                      uint32_t time, struct wlsc_output *output,
1419                      int32_t x, int32_t y)
1420 {
1421         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1422         struct wlsc_compositor *compositor =
1423                 (struct wlsc_compositor *) device->compositor;
1424         struct wlsc_surface *es;
1425         int32_t sx, sy;
1426
1427         if (output) {
1428                 device->x = x;
1429                 device->y = y;
1430                 es = pick_surface(device, &sx, &sy);
1431                 wl_input_device_set_pointer_focus(device,
1432                                                   &es->surface,
1433                                                   time, x, y, sx, sy);
1434
1435                 compositor->focus = 1;
1436
1437                 wd->sprite->x = device->x - wd->hotspot_x;
1438                 wd->sprite->y = device->y - wd->hotspot_y;
1439         } else {
1440                 wl_input_device_set_pointer_focus(device, NULL,
1441                                                   time, 0, 0, 0, 0);
1442                 compositor->focus = 0;
1443         }
1444
1445         wlsc_surface_damage(wd->sprite);
1446 }
1447
1448 WL_EXPORT void
1449 notify_keyboard_focus(struct wl_input_device *device,
1450                       uint32_t time, struct wlsc_output *output,
1451                       struct wl_array *keys)
1452 {
1453         struct wlsc_input_device *wd =
1454                 (struct wlsc_input_device *) device;
1455         struct wlsc_compositor *compositor =
1456                 (struct wlsc_compositor *) device->compositor;
1457         struct wlsc_surface *es;
1458         uint32_t *k, *end;
1459
1460         if (!wl_list_empty(&compositor->surface_list))
1461                 es = container_of(compositor->surface_list.next,
1462                                   struct wlsc_surface, link);
1463         else
1464                 es = NULL;
1465
1466         if (output) {
1467                 wl_array_copy(&wd->input_device.keys, keys);
1468                 wd->modifier_state = 0;
1469                 end = device->keys.data + device->keys.size;
1470                 for (k = device->keys.data; k < end; k++) {
1471                         wlsc_compositor_idle_inhibit(compositor);
1472                         update_modifier_state(wd, *k, 1);
1473                 }
1474
1475                 if (es->surface.client)
1476                         wl_input_device_set_keyboard_focus(&wd->input_device,
1477                                                            &es->surface, time);
1478         } else {
1479                 end = device->keys.data + device->keys.size;
1480                 for (k = device->keys.data; k < end; k++)
1481                         wlsc_compositor_idle_release(compositor);
1482
1483                 wd->modifier_state = 0;
1484                 wl_input_device_set_keyboard_focus(&wd->input_device,
1485                                                    NULL, time);
1486         }
1487 }
1488
1489
1490 static void
1491 input_device_attach(struct wl_client *client,
1492                     struct wl_input_device *device_base,
1493                     uint32_t time,
1494                     struct wl_buffer *buffer, int32_t x, int32_t y)
1495 {
1496         struct wlsc_input_device *device =
1497                 (struct wlsc_input_device *) device_base;
1498
1499         if (time < device->input_device.pointer_focus_time)
1500                 return;
1501         if (device->input_device.pointer_focus == NULL)
1502                 return;
1503         if (device->input_device.pointer_focus->client != client)
1504                 return;
1505
1506         if (buffer == NULL) {
1507                 wlsc_input_device_set_pointer_image(device,
1508                                                     WLSC_POINTER_LEFT_PTR);
1509                 return;
1510         }
1511
1512         wlsc_input_device_attach_buffer(device, buffer, x, y);
1513 }
1514
1515 const static struct wl_input_device_interface input_device_interface = {
1516         input_device_attach,
1517 };
1518
1519 WL_EXPORT void
1520 wlsc_input_device_init(struct wlsc_input_device *device,
1521                        struct wlsc_compositor *ec)
1522 {
1523         wl_input_device_init(&device->input_device, &ec->compositor);
1524
1525         device->input_device.object.interface = &wl_input_device_interface;
1526         device->input_device.object.implementation =
1527                 (void (**)(void)) &input_device_interface;
1528         wl_display_add_object(ec->wl_display, &device->input_device.object);
1529         wl_display_add_global(ec->wl_display, &device->input_device.object, NULL);
1530
1531         device->sprite = wlsc_surface_create(ec,
1532                                              device->input_device.x,
1533                                              device->input_device.y, 32, 32);
1534         wl_list_insert(&ec->surface_list, &device->sprite->link);
1535
1536         device->hotspot_x = 16;
1537         device->hotspot_y = 16;
1538         device->modifier_state = 0;
1539
1540         device->input_device.motion_grab.interface = &motion_grab_interface;
1541
1542         wl_list_insert(ec->input_device_list.prev, &device->link);
1543
1544         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1545 }
1546
1547 static void
1548 wlsc_output_post_geometry(struct wl_client *client,
1549                           struct wl_object *global, uint32_t version)
1550 {
1551         struct wlsc_output *output =
1552                 container_of(global, struct wlsc_output, object);
1553         struct wlsc_mode *mode;
1554
1555         wl_client_post_event(client, global,
1556                              WL_OUTPUT_GEOMETRY,
1557                              output->x,
1558                              output->y,
1559                              output->mm_width,
1560                              output->mm_height,
1561                              output->subpixel,
1562                              output->make, output->model);
1563
1564         wl_list_for_each (mode, &output->mode_list, link) {
1565                 wl_client_post_event(client, global,
1566                                      WL_OUTPUT_MODE,
1567                                      mode->flags,
1568                                      mode->width, mode->height, mode->refresh);
1569         }
1570 }
1571
1572 static const char vertex_shader[] =
1573         "uniform mat4 proj;\n"
1574         "attribute vec2 position;\n"
1575         "attribute vec2 texcoord;\n"
1576         "varying vec2 v_texcoord;\n"
1577         "void main()\n"
1578         "{\n"
1579         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1580         "   v_texcoord = texcoord;\n"
1581         "}\n";
1582
1583 static const char texture_fragment_shader[] =
1584         "precision mediump float;\n"
1585         "varying vec2 v_texcoord;\n"
1586         "uniform sampler2D tex;\n"
1587         "void main()\n"
1588         "{\n"
1589         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1590         "}\n";
1591
1592 static const char solid_fragment_shader[] =
1593         "precision mediump float;\n"
1594         "uniform vec4 color;\n"
1595         "void main()\n"
1596         "{\n"
1597         "   gl_FragColor = color\n;"
1598         "}\n";
1599
1600 static int
1601 compile_shader(GLenum type, const char *source)
1602 {
1603         GLuint s;
1604         char msg[512];
1605         GLint status;
1606
1607         s = glCreateShader(type);
1608         glShaderSource(s, 1, &source, NULL);
1609         glCompileShader(s);
1610         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
1611         if (!status) {
1612                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
1613                 fprintf(stderr, "shader info: %s\n", msg);
1614                 return GL_NONE;
1615         }
1616
1617         return s;
1618 }
1619
1620 static int
1621 wlsc_shader_init(struct wlsc_shader *shader,
1622                  const char *vertex_source, const char *fragment_source)
1623 {
1624         char msg[512];
1625         GLint status;
1626
1627         shader->vertex_shader =
1628                 compile_shader(GL_VERTEX_SHADER, vertex_source);
1629         shader->fragment_shader =
1630                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1631
1632         shader->program = glCreateProgram();
1633         glAttachShader(shader->program, shader->vertex_shader);
1634         glAttachShader(shader->program, shader->fragment_shader);
1635         glBindAttribLocation(shader->program, 0, "position");
1636         glBindAttribLocation(shader->program, 1, "texcoord");
1637
1638         glLinkProgram(shader->program);
1639         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1640         if (!status) {
1641                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1642                 fprintf(stderr, "link info: %s\n", msg);
1643                 return -1;
1644         }
1645
1646         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1647         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
1648
1649         return 0;
1650 }
1651
1652 static int
1653 init_solid_shader(struct wlsc_shader *shader,
1654                   GLuint vertex_shader, const char *fragment_source)
1655 {
1656         GLint status;
1657         char msg[512];
1658
1659         shader->vertex_shader = vertex_shader;
1660         shader->fragment_shader =
1661                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1662
1663         shader->program = glCreateProgram();
1664         glAttachShader(shader->program, shader->vertex_shader);
1665         glAttachShader(shader->program, shader->fragment_shader);
1666         glBindAttribLocation(shader->program, 0, "position");
1667         glBindAttribLocation(shader->program, 1, "texcoord");
1668
1669         glLinkProgram(shader->program);
1670         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1671         if (!status) {
1672                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1673                 fprintf(stderr, "link info: %s\n", msg);
1674                 return -1;
1675         }
1676
1677         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1678         shader->color_uniform = glGetUniformLocation(shader->program, "color");
1679
1680         return 0;
1681 }
1682
1683 WL_EXPORT void
1684 wlsc_output_destroy(struct wlsc_output *output)
1685 {
1686         pixman_region32_fini(&output->region);
1687         pixman_region32_fini(&output->previous_damage_region);
1688         destroy_surface(&output->background->surface.resource, NULL);
1689 }
1690
1691 WL_EXPORT void
1692 wlsc_output_move(struct wlsc_output *output, int x, int y)
1693 {
1694         struct wlsc_compositor *c = output->compositor;
1695         int flip;
1696
1697         output->x = x;
1698         output->y = y;
1699
1700         if (output->background) {
1701                 output->background->x = x;
1702                 output->background->y = y;
1703         }
1704
1705         pixman_region32_init(&output->previous_damage_region);
1706         pixman_region32_init_rect(&output->region, x, y,
1707                                   output->current->width,
1708                                   output->current->height);
1709
1710         wlsc_matrix_init(&output->matrix);
1711         wlsc_matrix_translate(&output->matrix,
1712                               -output->x - output->current->width / 2.0,
1713                               -output->y - output->current->height / 2.0, 0);
1714
1715         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1716         wlsc_matrix_scale(&output->matrix,
1717                           2.0 / output->current->width,
1718                           flip * 2.0 / output->current->height, 1);
1719
1720         pixman_region32_union(&c->damage, &c->damage, &output->region);
1721 }
1722
1723 WL_EXPORT void
1724 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1725                  int x, int y, int width, int height, uint32_t flags)
1726 {
1727         output->compositor = c;
1728         output->x = x;
1729         output->y = y;
1730         output->mm_width = width;
1731         output->mm_height = height;
1732
1733         output->background =
1734                 background_create(output, option_background);
1735
1736         if (output->background != NULL)
1737                 wl_list_insert(c->surface_list.prev,
1738                                &output->background->link);
1739
1740         output->flags = flags;
1741         wlsc_output_move(output, x, y);
1742
1743         output->scanout_buffer_destroy_listener.func =
1744                 output_handle_scanout_buffer_destroy;
1745         wl_list_init(&output->scanout_buffer_destroy_listener.link);
1746
1747         output->object.interface = &wl_output_interface;
1748         wl_display_add_object(c->wl_display, &output->object);
1749         wl_display_add_global(c->wl_display, &output->object,
1750                               wlsc_output_post_geometry);
1751 }
1752
1753 static void
1754 shm_buffer_created(struct wl_buffer *buffer)
1755 {
1756         struct wl_list *surfaces_attached_to;
1757
1758         surfaces_attached_to = malloc(sizeof *surfaces_attached_to);
1759         if (!surfaces_attached_to) {
1760                 buffer->user_data = NULL;
1761                 return;
1762         }
1763
1764         wl_list_init(surfaces_attached_to);
1765
1766         buffer->user_data = surfaces_attached_to;
1767 }
1768
1769 static void
1770 shm_buffer_damaged(struct wl_buffer *buffer,
1771                    int32_t x, int32_t y, int32_t width, int32_t height)
1772 {
1773         struct wl_list *surfaces_attached_to = buffer->user_data;
1774         struct wlsc_surface *es;
1775         GLsizei tex_width = wl_shm_buffer_get_stride(buffer) / 4;
1776
1777         wl_list_for_each(es, surfaces_attached_to, buffer_link) {
1778                 glBindTexture(GL_TEXTURE_2D, es->texture);
1779                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1780                              tex_width, buffer->height, 0,
1781                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1782                              wl_shm_buffer_get_data(buffer));
1783                 /* Hmm, should use glTexSubImage2D() here but GLES2 doesn't
1784                  * support any unpack attributes except GL_UNPACK_ALIGNMENT. */
1785         }
1786 }
1787
1788 static void
1789 shm_buffer_destroyed(struct wl_buffer *buffer)
1790 {
1791         struct wl_list *surfaces_attached_to = buffer->user_data;
1792         struct wlsc_surface *es, *next;
1793
1794         wl_list_for_each_safe(es, next, surfaces_attached_to, buffer_link) {
1795                 wl_list_remove(&es->buffer_link);
1796                 wl_list_init(&es->buffer_link);
1797         }
1798
1799         free(surfaces_attached_to);
1800 }
1801
1802 const static struct wl_shm_callbacks shm_callbacks = {
1803         shm_buffer_created,
1804         shm_buffer_damaged,
1805         shm_buffer_destroyed
1806 };
1807
1808 WL_EXPORT int
1809 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1810 {
1811         struct wl_event_loop *loop;
1812         const char *extensions;
1813
1814         ec->wl_display = display;
1815
1816         wl_compositor_init(&ec->compositor, &compositor_interface, display);
1817
1818         ec->shm = wl_shm_init(display, &shm_callbacks);
1819
1820         ec->image_target_texture_2d =
1821                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
1822         ec->image_target_renderbuffer_storage = (void *)
1823                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
1824         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
1825         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
1826         ec->bind_display =
1827                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
1828         ec->unbind_display =
1829                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
1830
1831         extensions = (const char *) glGetString(GL_EXTENSIONS);
1832         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
1833                 fprintf(stderr,
1834                         "GL_EXT_texture_format_BGRA8888 not available\n");
1835                 return -1;
1836         }
1837
1838         extensions =
1839                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
1840         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
1841                 ec->has_bind_display = 1;
1842         if (ec->has_bind_display)
1843                 ec->bind_display(ec->display, ec->wl_display);
1844
1845         wl_list_init(&ec->surface_list);
1846         wl_list_init(&ec->input_device_list);
1847         wl_list_init(&ec->output_list);
1848         wl_list_init(&ec->binding_list);
1849         wl_list_init(&ec->animation_list);
1850         wlsc_spring_init(&ec->fade.spring, 0.8, 0.0, 0.0);
1851         ec->fade.animation.frame = fade_frame;
1852         wl_list_init(&ec->fade.animation.link);
1853
1854         wlsc_compositor_add_binding(ec, KEY_BACKSPACE, 0,
1855                                     MODIFIER_CTRL | MODIFIER_ALT,
1856                                     terminate_binding, ec);
1857
1858         create_pointer_images(ec);
1859
1860         screenshooter_create(ec);
1861
1862         glActiveTexture(GL_TEXTURE0);
1863
1864         if (wlsc_shader_init(&ec->texture_shader,
1865                              vertex_shader, texture_fragment_shader) < 0)
1866                 return -1;
1867         if (init_solid_shader(&ec->solid_shader,
1868                               ec->texture_shader.vertex_shader,
1869                               solid_fragment_shader) < 0)
1870                 return -1;
1871
1872         loop = wl_display_get_event_loop(ec->wl_display);
1873         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
1874         wl_event_source_timer_update(ec->idle_source, option_idle_time * 1000);
1875
1876         pixman_region32_init(&ec->damage);
1877         wlsc_compositor_schedule_repaint(ec);
1878
1879         return 0;
1880 }
1881
1882 static int on_term_signal(int signal_number, void *data)
1883 {
1884         struct wlsc_compositor *ec = data;
1885
1886         wl_display_terminate(ec->wl_display);
1887
1888         return 1;
1889 }
1890
1891 static void *
1892 load_module(const char *name, const char *entrypoint, void **handle)
1893 {
1894         char path[PATH_MAX];
1895         void *module, *init;
1896
1897         if (name[0] != '/')
1898                 snprintf(path, sizeof path, MODULEDIR "/%s", name);
1899         else
1900                 snprintf(path, sizeof path, "%s", name);
1901
1902         module = dlopen(path, RTLD_LAZY);
1903         if (!module) {
1904                 fprintf(stderr,
1905                         "failed to load module: %s\n", dlerror());
1906                 return NULL;
1907         }
1908
1909         init = dlsym(module, entrypoint);
1910         if (!init) {
1911                 fprintf(stderr,
1912                         "failed to lookup init function: %s\n", dlerror());
1913                 return NULL;
1914         }
1915
1916         return init;
1917 }
1918
1919 int main(int argc, char *argv[])
1920 {
1921         struct wl_display *display;
1922         struct wlsc_compositor *ec;
1923         struct wl_event_loop *loop;
1924         int o, xserver = 0;
1925         void *shell_module, *backend_module;
1926         int (*shell_init)(struct wlsc_compositor *ec);
1927         struct wlsc_compositor
1928                 *(*backend_init)(struct wl_display *display, char *options);
1929         char *backend = NULL;
1930         char *backend_options = "";
1931         char *shell = NULL;
1932         char *p;
1933
1934         static const char opts[] = "B:b:o:S:i:s:x";
1935         static const struct option longopts[ ] = {
1936                 { "backend", 1, NULL, 'B' },
1937                 { "backend-options", 1, NULL, 'o' },
1938                 { "background", 1, NULL, 'b' },
1939                 { "socket", 1, NULL, 'S' },
1940                 { "idle-time", 1, NULL, 'i' },
1941                 { "shell", 1, NULL, 's' },
1942                 { "xserver", 0, NULL, 'x' },
1943                 { NULL, }
1944         };
1945
1946         while (o = getopt_long(argc, argv, opts, longopts, &o), o > 0) {
1947                 switch (o) {
1948                 case 'b':
1949                         option_background = optarg;
1950                         break;
1951                 case 'B':
1952                         backend = optarg;
1953                         break;
1954                 case 'o':
1955                         backend_options = optarg;
1956                         break;
1957                 case 'S':
1958                         option_socket_name = optarg;
1959                         break;
1960                 case 'i':
1961                         option_idle_time = strtol(optarg, &p, 0);
1962                         if (*p != '\0') {
1963                                 fprintf(stderr,
1964                                         "invalid idle time option: %s\n",
1965                                         optarg);
1966                                 exit(EXIT_FAILURE);
1967                         }
1968                         break;
1969                 case 's':
1970                         shell = optarg;
1971                         break;
1972                 case 'x':
1973                         xserver = 1;
1974                         break;
1975                 }
1976         }
1977
1978         display = wl_display_create();
1979
1980         ec = NULL;
1981
1982         if (!backend) {
1983                 if (getenv("WAYLAND_DISPLAY"))
1984                         backend = "wayland-backend.so";
1985                 else if (getenv("DISPLAY"))
1986                         backend = "x11-backend.so";
1987                 else if (getenv("OPENWFD"))
1988                         backend = "openwfd-backend.so";
1989                 else
1990                         backend = "drm-backend.so";
1991         }
1992
1993         if (!shell)
1994                 shell = "desktop-shell.so";
1995
1996         backend_init = load_module(backend, "backend_init", &backend_module);
1997         if (!backend_init)
1998                 exit(EXIT_FAILURE);
1999
2000         shell_init = load_module(shell, "shell_init", &shell_module);
2001         if (!shell_init)
2002                 exit(EXIT_FAILURE);
2003
2004         ec = backend_init(display, backend_options);
2005         if (ec == NULL) {
2006                 fprintf(stderr, "failed to create compositor\n");
2007                 exit(EXIT_FAILURE);
2008         }
2009
2010         if (shell_init(ec) < 0)
2011                 exit(EXIT_FAILURE);
2012
2013         if (xserver)
2014                 wlsc_xserver_init(display);
2015
2016         if (wl_display_add_socket(display, option_socket_name)) {
2017                 fprintf(stderr, "failed to add socket: %m\n");
2018                 exit(EXIT_FAILURE);
2019         }
2020
2021         loop = wl_display_get_event_loop(ec->wl_display);
2022         wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
2023         wl_event_loop_add_signal(loop, SIGINT, on_term_signal, ec);
2024
2025         wl_list_init(&child_process_list);
2026         wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler, NULL);
2027
2028         wl_display_run(display);
2029
2030         if (ec->has_bind_display)
2031                 ec->unbind_display(ec->display, display);
2032         wl_display_destroy(display);
2033
2034         ec->destroy(ec);
2035
2036         return 0;
2037 }