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         surface->buffer_destroy_listener.func = surface_handle_buffer_destroy;
 258         wl_list_init(&surface->buffer_destroy_listener.link);
 259
 260         surface->transform = NULL;
 261
 262         return surface;
 263 }
 264
 265 WL_EXPORT void
 266 wlsc_surface_damage_rectangle(struct wlsc_surface *surface,
 267                               int32_t x, int32_t y,
 268                               int32_t width, int32_t height)
 269 {
 270         struct wlsc_compositor *compositor = surface->compositor;
 271
 272         pixman_region32_union_rect(&compositor->damage_region,
 273                                    &compositor->damage_region,
 274                                    surface->x + x, surface->y + y,
 275                                    width, height);
 276         wlsc_compositor_schedule_repaint(compositor);
 277 }
 278
 279 WL_EXPORT void
 280 wlsc_surface_damage(struct wlsc_surface *surface)
 281 {
 282         wlsc_surface_damage_rectangle(surface, 0, 0,
 283                                       surface->width, surface->height);
 284 }
 285
 286 WL_EXPORT uint32_t
 287 wlsc_compositor_get_time(void)
 288 {
 289         struct timeval tv;
 290
 291         gettimeofday(&tv, NULL);
 292
 293         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 294 }
 295
 296 static void
 297 destroy_surface(struct wl_resource *resource, struct wl_client *client)
 298 {
 299         struct wlsc_surface *surface =
 300                 container_of(resource, struct wlsc_surface, surface.resource);
 301         struct wlsc_compositor *compositor = surface->compositor;
 302
 303         wlsc_surface_damage(surface);
 304
 305         wl_list_remove(&surface->link);
 306         if (surface->saved_texture == 0)
 307                 glDeleteTextures(1, &surface->texture);
 308         else
 309                 glDeleteTextures(1, &surface->saved_texture);
 310
 311         if (surface->buffer)
 312                 wl_list_remove(&surface->buffer_destroy_listener.link);
 313
 314         if (surface->image != EGL_NO_IMAGE_KHR)
 315                 compositor->destroy_image(compositor->display,
 316                                           surface->image);
 317
 318         wl_list_remove(&surface->buffer_link);
 319
 320         free(surface);
 321 }
 322
 323 static void
 324 wlsc_buffer_attach(struct wl_buffer *buffer, struct wl_surface *surface)
 325 {
 326         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 327         struct wlsc_compositor *ec = es->compositor;
 328         struct wl_list *surfaces_attached_to;
 329
 330         if (es->saved_texture != 0)
 331                 es->texture = es->saved_texture;
 332
 333         glBindTexture(GL_TEXTURE_2D, es->texture);
 334
 335         if (wl_buffer_is_shm(buffer)) {
 336                 /* Unbind any EGLImage texture that may be bound, so we don't
 337                  * overwrite it.*/
 338                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 339                              0, 0, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, NULL);
 340                 es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
 341                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 342                              es->pitch, buffer->height, 0,
 343                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
 344                              wl_shm_buffer_get_data(buffer));
 345                 es->visual = buffer->visual;
 346
 347                 surfaces_attached_to = buffer->user_data;
 348
 349                 wl_list_remove(&es->buffer_link);
 350                 wl_list_insert(surfaces_attached_to, &es->buffer_link);
 351         } else {
 352                 if (es->image != EGL_NO_IMAGE_KHR)
 353                         ec->destroy_image(ec->display, es->image);
 354                 es->image = ec->create_image(ec->display, NULL,
 355                                              EGL_WAYLAND_BUFFER_WL,
 356                                              buffer, NULL);
 357
 358                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 359                 es->visual = buffer->visual;
 360                 es->pitch = es->width;
 361         }
 362 }
 363
 364 static void
 365 wlsc_sprite_attach(struct wlsc_sprite *sprite, struct wl_surface *surface)
 366 {
 367         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 368         struct wlsc_compositor *ec = es->compositor;
 369
 370         es->pitch = es->width;
 371         es->image = sprite->image;
 372         if (sprite->image != EGL_NO_IMAGE_KHR) {
 373                 glBindTexture(GL_TEXTURE_2D, es->texture);
 374                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 375         } else {
 376                 if (es->saved_texture == 0)
 377                         es->saved_texture = es->texture;
 378                 es->texture = sprite->texture;
 379         }
 380
 381         es->visual = sprite->visual;
 382
 383         if (es->buffer)
 384                 es->buffer = NULL;
 385 }
 386
 387 enum sprite_usage {
 388         SPRITE_USE_CURSOR = (1 << 0),
 389 };
 390
 391 static struct wlsc_sprite *
 392 create_sprite_from_png(struct wlsc_compositor *ec,
 393                        const char *filename, uint32_t usage)
 394 {
 395         uint32_t *pixels;
 396         struct wlsc_sprite *sprite;
 397         int32_t width, height;
 398         uint32_t stride;
 399
 400         pixels = wlsc_load_image(filename, &width, &height, &stride);
 401         if (pixels == NULL)
 402                 return NULL;
 403
 404         sprite = malloc(sizeof *sprite);
 405         if (sprite == NULL) {
 406                 free(pixels);
 407                 return NULL;
 408         }
 409
 410         sprite->visual = &ec->compositor.premultiplied_argb_visual;
 411         sprite->width = width;
 412         sprite->height = height;
 413         sprite->image = EGL_NO_IMAGE_KHR;
 414
 415         if (usage & SPRITE_USE_CURSOR && ec->create_cursor_image != NULL)
 416                 sprite->image = ec->create_cursor_image(ec, width, height);
 417
 418         glGenTextures(1, &sprite->texture);
 419         glBindTexture(GL_TEXTURE_2D, sprite->texture);
 420         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 421         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 422         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 423         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 424
 425         if (sprite->image != EGL_NO_IMAGE_KHR) {
 426                 ec->image_target_texture_2d(GL_TEXTURE_2D, sprite->image);
 427                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,
 428                                 GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 429         } else {
 430                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT, width, height, 0,
 431                              GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 432         }
 433
 434         free(pixels);
 435
 436         return sprite;
 437 }
 438
 439 static const struct {
 440         const char *filename;
 441         int hotspot_x, hotspot_y;
 442 } pointer_images[] = {
 443         { DATADIR "/wayland/bottom_left_corner.png",     6, 30 },
 444         { DATADIR "/wayland/bottom_right_corner.png",   28, 28 },
 445         { DATADIR "/wayland/bottom_side.png",           16, 20 },
 446         { DATADIR "/wayland/grabbing.png",              20, 17 },
 447         { DATADIR "/wayland/left_ptr.png",              10,  5 },
 448         { DATADIR "/wayland/left_side.png",             10, 20 },
 449         { DATADIR "/wayland/right_side.png",            30, 19 },
 450         { DATADIR "/wayland/top_left_corner.png",        8,  8 },
 451         { DATADIR "/wayland/top_right_corner.png",      26,  8 },
 452         { DATADIR "/wayland/top_side.png",              18,  8 },
 453         { DATADIR "/wayland/xterm.png",                 15, 15 }
 454 };
 455
 456 static void
 457 create_pointer_images(struct wlsc_compositor *ec)
 458 {
 459         int i, count;
 460
 461         count = ARRAY_LENGTH(pointer_images);
 462         ec->pointer_sprites = malloc(count * sizeof *ec->pointer_sprites);
 463         for (i = 0; i < count; i++) {
 464                 ec->pointer_sprites[i] =
 465                         create_sprite_from_png(ec,
 466                                                pointer_images[i].filename,
 467                                                SPRITE_USE_CURSOR);
 468         }
 469 }
 470
 471 static struct wlsc_surface *
 472 background_create(struct wlsc_output *output, const char *filename)
 473 {
 474         struct wlsc_surface *background;
 475         struct wlsc_sprite *sprite;
 476
 477         background = wlsc_surface_create(output->compositor,
 478                                          output->x, output->y,
 479                                          output->current->width,
 480                                          output->current->height);
 481         if (background == NULL)
 482                 return NULL;
 483
 484         sprite = create_sprite_from_png(output->compositor, filename, 0);
 485         if (sprite == NULL) {
 486                 free(background);
 487                 return NULL;
 488         }
 489
 490         wlsc_sprite_attach(sprite, &background->surface);
 491
 492         return background;
 493 }
 494
 495 static int
 496 texture_region(struct wlsc_surface *es, pixman_region32_t *region)
 497 {
 498         struct wlsc_compositor *ec = es->compositor;
 499         GLfloat *v, inv_width, inv_height;
 500         pixman_box32_t *rectangles;
 501         unsigned int *p;
 502         int i, n;
 503
 504         rectangles = pixman_region32_rectangles(region, &n);
 505         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 506         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 507         inv_width = 1.0 / es->pitch;
 508         inv_height = 1.0 / es->height;
 509
 510         for (i = 0; i < n; i++, v += 16, p += 6) {
 511                 v[ 0] = rectangles[i].x1;
 512                 v[ 1] = rectangles[i].y1;
 513                 v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
 514                 v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
 515
 516                 v[ 4] = rectangles[i].x1;
 517                 v[ 5] = rectangles[i].y2;
 518                 v[ 6] = v[ 2];
 519                 v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
 520
 521                 v[ 8] = rectangles[i].x2;
 522                 v[ 9] = rectangles[i].y1;
 523                 v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
 524                 v[11] = v[ 3];
 525
 526                 v[12] = rectangles[i].x2;
 527                 v[13] = rectangles[i].y2;
 528                 v[14] = v[10];
 529                 v[15] = v[ 7];
 530
 531                 p[0] = i * 4 + 0;
 532                 p[1] = i * 4 + 1;
 533                 p[2] = i * 4 + 2;
 534                 p[3] = i * 4 + 2;
 535                 p[4] = i * 4 + 1;
 536                 p[5] = i * 4 + 3;
 537         }
 538
 539         return n;
 540 }
 541
 542 static void
 543 transform_vertex(struct wlsc_surface *surface,
 544                  GLfloat x, GLfloat y, GLfloat u, GLfloat v, GLfloat *r)
 545 {
 546         struct wlsc_vector t;
 547
 548         t.f[0] = x;
 549         t.f[1] = y;
 550         t.f[2] = 0.0;
 551         t.f[3] = 1.0;
 552
 553         wlsc_matrix_transform(&surface->transform->matrix, &t);
 554
 555         r[ 0] = t.f[0];
 556         r[ 1] = t.f[1];
 557         r[ 2] = u;
 558         r[ 3] = v;
 559 }
 560
 561 static int
 562 texture_transformed_surface(struct wlsc_surface *es)
 563 {
 564         struct wlsc_compositor *ec = es->compositor;
 565         GLfloat *v;
 566         unsigned int *p;
 567
 568         v = wl_array_add(&ec->vertices, 16 * sizeof *v);
 569         p = wl_array_add(&ec->indices, 6 * sizeof *p);
 570
 571         transform_vertex(es, es->x, es->y, 0.0, 0.0, &v[0]);
 572         transform_vertex(es, es->x, es->y + es->height, 0.0, 1.0, &v[4]);
 573         transform_vertex(es, es->x + es->width, es->y, 1.0, 0.0, &v[8]);
 574         transform_vertex(es, es->x + es->width, es->y + es->height,
 575                          1.0, 1.0, &v[12]);
 576
 577         p[0] = 0;
 578         p[1] = 1;
 579         p[2] = 2;
 580         p[3] = 2;
 581         p[4] = 1;
 582         p[5] = 3;
 583
 584         return 1;
 585 }
 586
 587 static void
 588 wlsc_surface_draw(struct wlsc_surface *es,
 589                   struct wlsc_output *output, pixman_region32_t *clip)
 590 {
 591         struct wlsc_compositor *ec = es->compositor;
 592         GLfloat *v;
 593         pixman_region32_t repaint;
 594         GLint filter;
 595         int n;
 596
 597         pixman_region32_init_rect(&repaint,
 598                                   es->x, es->y, es->width, es->height);
 599         pixman_region32_intersect(&repaint, &repaint, clip);
 600         if (!pixman_region32_not_empty(&repaint))
 601                 return;
 602
 603         if (es->visual == &ec->compositor.argb_visual) {
 604                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 605                 glEnable(GL_BLEND);
 606         } else if (es->visual == &ec->compositor.premultiplied_argb_visual) {
 607                 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 608                 glEnable(GL_BLEND);
 609         } else {
 610                 glDisable(GL_BLEND);
 611         }
 612
 613         if (es->transform == NULL) {
 614                 filter = GL_NEAREST;
 615                 n = texture_region(es, &repaint);
 616         } else {
 617                 filter = GL_LINEAR;
 618                 n = texture_transformed_surface(es);
 619         }
 620
 621         glBindTexture(GL_TEXTURE_2D, es->texture);
 622         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
 623         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
 624
 625         v = ec->vertices.data;
 626         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 627         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 628         glEnableVertexAttribArray(0);
 629         glEnableVertexAttribArray(1);
 630         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 631
 632         ec->vertices.size = 0;
 633         ec->indices.size = 0;
 634         pixman_region32_fini(&repaint);
 635 }
 636
 637 static void
 638 wlsc_surface_raise(struct wlsc_surface *surface)
 639 {
 640         struct wlsc_compositor *compositor = surface->compositor;
 641
 642         wl_list_remove(&surface->link);
 643         wl_list_insert(&compositor->surface_list, &surface->link);
 644 }
 645
 646 WL_EXPORT void
 647 wlsc_compositor_damage_all(struct wlsc_compositor *compositor)
 648 {
 649         struct wlsc_output *output;
 650
 651         wl_list_for_each(output, &compositor->output_list, link)
 652                 wlsc_output_damage(output);
 653 }
 654
 655 static inline void
 656 wlsc_buffer_post_release(struct wl_buffer *buffer)
 657 {
 658         if (buffer == NULL || --buffer->busy_count > 0)
 659                 return;
 660
 661         assert(buffer->client != NULL);
 662         wl_client_post_event(buffer->client,
 663                              &buffer->resource.object,
 664                              WL_BUFFER_RELEASE);
 665 }
 666
 667 WL_EXPORT void
 668 wlsc_output_damage(struct wlsc_output *output)
 669 {
 670         struct wlsc_compositor *compositor = output->compositor;
 671
 672         pixman_region32_union(&compositor->damage_region,
 673                               &compositor->damage_region, &output->region);
 674         wlsc_compositor_schedule_repaint(compositor);
 675 }
 676
 677 static void
 678 fade_frame(struct wlsc_animation *animation,
 679            struct wlsc_output *output, uint32_t msecs)
 680 {
 681         struct wlsc_compositor *compositor =
 682                 container_of(animation,
 683                              struct wlsc_compositor, fade.animation);
 684
 685         wlsc_spring_update(&compositor->fade.spring, msecs);
 686         if (wlsc_spring_done(&compositor->fade.spring)) {
 687                 if (compositor->fade.spring.current > 0.999) {
 688                         compositor->state = WLSC_COMPOSITOR_SLEEPING;
 689                         compositor->shell->lock(compositor->shell);
 690                 }
 691                 compositor->fade.spring.current =
 692                         compositor->fade.spring.target;
 693                 wl_list_remove(&animation->link);
 694                 wl_list_init(&animation->link);
 695         }
 696
 697         wlsc_output_damage(output);
 698 }
 699
 700 static void
 701 fade_output(struct wlsc_output *output,
 702             GLfloat tint, pixman_region32_t *region)
 703 {
 704         struct wlsc_compositor *compositor = output->compositor;
 705         struct wlsc_surface surface;
 706         GLfloat color[4] = { 0.0, 0.0, 0.0, tint };
 707
 708         surface.compositor = compositor;
 709         surface.x = output->x;
 710         surface.y = output->y;
 711         surface.width = output->current->width;
 712         surface.height = output->current->height;
 713         surface.texture = GL_NONE;
 714         surface.transform = NULL;
 715
 716         if (tint <= 1.0)
 717                 surface.visual =
 718                         &compositor->compositor.premultiplied_argb_visual;
 719         else
 720                 surface.visual = &compositor->compositor.rgb_visual;
 721
 722         glUseProgram(compositor->solid_shader.program);
 723         glUniformMatrix4fv(compositor->solid_shader.proj_uniform,
 724                            1, GL_FALSE, output->matrix.d);
 725         glUniform4fv(compositor->solid_shader.color_uniform, 1, color);
 726         wlsc_surface_draw(&surface, output, region);
 727 }
 728
 729 static void
 730 wlsc_output_repaint(struct wlsc_output *output)
 731 {
 732         struct wlsc_compositor *ec = output->compositor;
 733         struct wlsc_surface *es;
 734         struct wlsc_input_device *device;
 735         pixman_region32_t new_damage, total_damage;
 736
 737         output->prepare_render(output);
 738
 739         glViewport(0, 0, output->current->width, output->current->height);
 740
 741         glUseProgram(ec->texture_shader.program);
 742         glUniformMatrix4fv(ec->texture_shader.proj_uniform,
 743                            1, GL_FALSE, output->matrix.d);
 744         glUniform1i(ec->texture_shader.tex_uniform, 0);
 745
 746         pixman_region32_init(&new_damage);
 747         pixman_region32_init(&total_damage);
 748         pixman_region32_intersect(&new_damage,
 749                                   &ec->damage_region, &output->region);
 750         pixman_region32_subtract(&ec->damage_region,
 751                                  &ec->damage_region, &new_damage);
 752         pixman_region32_union(&total_damage, &new_damage,
 753                               &output->previous_damage_region);
 754         pixman_region32_copy(&output->previous_damage_region, &new_damage);
 755
 756         device = (struct wlsc_input_device *) ec->input_device;
 757         if (ec->focus && ec->fade.spring.current < 0.001) {
 758                 if (!wl_list_empty(&device->sprite->link)) {
 759                         wl_list_remove(&device->sprite->link);
 760                         wl_list_init(&device->sprite->link);
 761                 }
 762                 if (output->set_hardware_cursor(output, device) < 0)
 763                         wl_list_insert(&ec->surface_list,
 764                                        &device->sprite->link);
 765         } else {
 766                 output->set_hardware_cursor(output, NULL);
 767                 if (wl_list_empty(&device->sprite->link))
 768                         wl_list_insert(&ec->surface_list,
 769                                        &device->sprite->link);
 770         }
 771
 772         es = container_of(ec->surface_list.next, struct wlsc_surface, link);
 773
 774         if (es->visual == &ec->compositor.rgb_visual &&
 775             output->prepare_scanout_surface(output, es) == 0) {
 776                 /* We're drawing nothing now,
 777                  * draw the damaged regions later. */
 778                 pixman_region32_union(&ec->damage_region,
 779                                       &ec->damage_region,
 780                                       &total_damage);
 781
 782                 output->scanout_buffer = es->buffer;
 783                 output->scanout_buffer->busy_count++;
 784
 785                 wl_list_remove(&output->scanout_buffer_destroy_listener.link);
 786                 wl_list_insert(output->scanout_buffer->resource.destroy_listener_list.prev,
 787                                &output->scanout_buffer_destroy_listener.link);
 788
 789                 return;
 790         }
 791
 792         if (es->fullscreen_output == output) {
 793                 if (es->width < output->current->width ||
 794                     es->height < output->current->height)
 795                         glClear(GL_COLOR_BUFFER_BIT);
 796                 wlsc_surface_draw(es, output, &total_damage);
 797         } else {
 798                 glUseProgram(ec->texture_shader.program);
 799                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 800                         if (ec->overlay == es)
 801                                 continue;
 802
 803                         wlsc_surface_draw(es, output, &total_damage);
 804                 }
 805         }
 806
 807         if (ec->overlay)
 808                 wlsc_surface_draw(ec->overlay, output, &total_damage);
 809
 810         if (ec->fade.spring.current > 0.001)
 811                 fade_output(output, ec->fade.spring.current, &total_damage);
 812 }
 813
 814 static void
 815 repaint(void *data, int msecs)
 816 {
 817         struct wlsc_output *output = data;
 818         struct wlsc_compositor *compositor = output->compositor;
 819         struct wlsc_surface *es;
 820         struct wlsc_animation *animation, *next;
 821
 822         wlsc_output_repaint(output);
 823         output->repaint_needed = 0;
 824         output->repaint_scheduled = 1;
 825         output->present(output);
 826
 827         /* FIXME: Keep the surfaces in an per-output list. */
 828         wl_list_for_each(es, &compositor->surface_list, link) {
 829                 if (es->output == output) {
 830                         wl_display_post_frame(compositor->wl_display,
 831                                               &es->surface, msecs);
 832                 }
 833         }
 834
 835         wl_list_for_each_safe(animation, next,
 836                               &compositor->animation_list, link)
 837                 animation->frame(animation, output, msecs);
 838 }
 839
 840 static void
 841 idle_repaint(void *data)
 842 {
 843         repaint(data, wlsc_compositor_get_time());
 844 }
 845
 846 WL_EXPORT void
 847 wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
 848 {
 849         wlsc_buffer_post_release(output->scanout_buffer);
 850         output->scanout_buffer = NULL;
 851         output->repaint_scheduled = 0;
 852
 853         if (output->repaint_needed)
 854                 repaint(output, msecs);
 855 }
 856
 857 WL_EXPORT void
 858 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 859 {
 860         struct wlsc_output *output;
 861         struct wl_event_loop *loop;
 862
 863         if (compositor->state == WLSC_COMPOSITOR_SLEEPING)
 864                 return;
 865
 866         loop = wl_display_get_event_loop(compositor->wl_display);
 867         wl_list_for_each(output, &compositor->output_list, link) {
 868                 output->repaint_needed = 1;
 869                 if (output->repaint_scheduled)
 870                         continue;
 871
 872                 wl_event_loop_add_idle(loop, idle_repaint, output);
 873                 output->repaint_scheduled = 1;
 874         }
 875 }
 876
 877 WL_EXPORT void
 878 wlsc_compositor_fade(struct wlsc_compositor *compositor, float tint)
 879 {
 880         int done;
 881
 882         done = wlsc_spring_done(&compositor->fade.spring);
 883         compositor->fade.spring.target = tint;
 884         if (wlsc_spring_done(&compositor->fade.spring))
 885                 return;
 886
 887         if (done)
 888                 compositor->fade.spring.timestamp =
 889                         wlsc_compositor_get_time();
 890
 891         wlsc_compositor_damage_all(compositor);
 892         if (wl_list_empty(&compositor->fade.animation.link))
 893                 wl_list_insert(compositor->animation_list.prev,
 894                                &compositor->fade.animation.link);
 895 }
 896
 897 static void
 898 surface_destroy(struct wl_client *client,
 899                 struct wl_surface *surface)
 900 {
 901         wl_resource_destroy(&surface->resource, client,
 902                             wlsc_compositor_get_time());
 903 }
 904
 905 WL_EXPORT void
 906 wlsc_surface_assign_output(struct wlsc_surface *es)
 907 {
 908         struct wlsc_compositor *ec = es->compositor;
 909         struct wlsc_output *output;
 910
 911         struct wlsc_output *tmp = es->output;
 912         es->output = NULL;
 913
 914         wl_list_for_each(output, &ec->output_list, link) {
 915                 if (pixman_region32_contains_point(&output->region,
 916                                                    es->x, es->y, NULL)) {
 917                         if (output != tmp)
 918                                 printf("assiging surface %p to output %p\n",
 919                                        es, output);
 920                         es->output = output;
 921                 }
 922         }
 923
 924         if (es->output == NULL) {
 925                 printf("no output found\n");
 926                 es->output = container_of(ec->output_list.next,
 927                                           struct wlsc_output, link);
 928         }
 929 }
 930
 931 static void
 932 surface_attach(struct wl_client *client,
 933                struct wl_surface *surface, struct wl_buffer *buffer,
 934                int32_t x, int32_t y)
 935 {
 936         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 937
 938         /* FIXME: This damages the entire old surface, but we should
 939          * really just damage the part that's no longer covered by the
 940          * surface.  Anything covered by the new surface will be
 941          * damaged by the client. */
 942         if (es->buffer)
 943                 wlsc_surface_damage(es);
 944
 945         buffer->busy_count++;
 946         wlsc_buffer_post_release(es->buffer);
 947
 948         es->buffer = buffer;
 949         wl_list_remove(&es->buffer_destroy_listener.link);
 950         wl_list_insert(es->buffer->resource.destroy_listener_list.prev,
 951                        &es->buffer_destroy_listener.link);
 952
 953         es->x += x;
 954         es->y += y;
 955         es->width = buffer->width;
 956         es->height = buffer->height;
 957         if (x != 0 || y != 0)
 958                 wlsc_surface_assign_output(es);
 959         if (es->visual == NULL)
 960                 wl_list_insert(&es->compositor->surface_list, &es->link);
 961
 962         wlsc_buffer_attach(buffer, surface);
 963
 964         es->compositor->shell->attach(es->compositor->shell, es);
 965 }
 966
 967 static void
 968 surface_damage(struct wl_client *client,
 969                struct wl_surface *surface,
 970                int32_t x, int32_t y, int32_t width, int32_t height)
 971 {
 972         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 973
 974         wlsc_surface_damage_rectangle(es, x, y, width, height);
 975 }
 976
 977 const static struct wl_surface_interface surface_interface = {
 978         surface_destroy,
 979         surface_attach,
 980         surface_damage
 981 };
 982
 983 static void
 984 wlsc_input_device_attach(struct wlsc_input_device *device,
 985                          int x, int y, int width, int height)
 986 {
 987         wlsc_surface_damage(device->sprite);
 988
 989         device->hotspot_x = x;
 990         device->hotspot_y = y;
 991
 992         device->sprite->x = device->input_device.x - device->hotspot_x;
 993         device->sprite->y = device->input_device.y - device->hotspot_y;
 994         device->sprite->width = width;
 995         device->sprite->height = height;
 996
 997         wlsc_surface_damage(device->sprite);
 998 }
 999
1000 static void
1001 wlsc_input_device_attach_buffer(struct wlsc_input_device *device,
1002                                 struct wl_buffer *buffer, int x, int y)
1003 {
1004         wlsc_buffer_attach(buffer, &device->sprite->surface);
1005         wlsc_input_device_attach(device, x, y, buffer->width, buffer->height);
1006 }
1007
1008 static void
1009 wlsc_input_device_attach_sprite(struct wlsc_input_device *device,
1010                                 struct wlsc_sprite *sprite, int x, int y)
1011 {
1012         wlsc_sprite_attach(sprite, &device->sprite->surface);
1013         wlsc_input_device_attach(device, x, y, sprite->width, sprite->height);
1014 }
1015
1016 WL_EXPORT void
1017 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
1018                                     enum wlsc_pointer_type type)
1019 {
1020         struct wlsc_compositor *compositor =
1021                 (struct wlsc_compositor *) device->input_device.compositor;
1022
1023         wlsc_input_device_attach_sprite(device,
1024                                         compositor->pointer_sprites[type],
1025                                         pointer_images[type].hotspot_x,
1026                                         pointer_images[type].hotspot_y);
1027 }
1028
1029 static void
1030 compositor_create_surface(struct wl_client *client,
1031                           struct wl_compositor *compositor, uint32_t id)
1032 {
1033         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
1034         struct wlsc_surface *surface;
1035
1036         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
1037         if (surface == NULL) {
1038                 wl_client_post_no_memory(client);
1039                 return;
1040         }
1041
1042         surface->surface.resource.destroy = destroy_surface;
1043
1044         surface->surface.resource.object.id = id;
1045         surface->surface.resource.object.interface = &wl_surface_interface;
1046         surface->surface.resource.object.implementation =
1047                 (void (**)(void)) &surface_interface;
1048         surface->surface.client = client;
1049
1050         wl_client_add_resource(client, &surface->surface.resource);
1051 }
1052
1053 const static struct wl_compositor_interface compositor_interface = {
1054         compositor_create_surface,
1055 };
1056
1057 static void
1058 wlsc_surface_transform(struct wlsc_surface *surface,
1059                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
1060 {
1061         *sx = x - surface->x;
1062         *sy = y - surface->y;
1063 }
1064
1065 WL_EXPORT struct wlsc_surface *
1066 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
1067 {
1068         struct wlsc_compositor *ec =
1069                 (struct wlsc_compositor *) device->compositor;
1070         struct wlsc_surface *es;
1071
1072         wl_list_for_each(es, &ec->surface_list, link) {
1073                 if (es->surface.client == NULL)
1074                         continue;
1075                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
1076                 if (0 <= *sx && *sx < es->width &&
1077                     0 <= *sy && *sy < es->height)
1078                         return es;
1079         }
1080
1081         return NULL;
1082 }
1083
1084
1085 static void
1086 motion_grab_motion(struct wl_grab *grab,
1087                    uint32_t time, int32_t x, int32_t y)
1088 {
1089         struct wlsc_input_device *device =
1090                 (struct wlsc_input_device *) grab->input_device;
1091         struct wlsc_surface *es =
1092                 (struct wlsc_surface *) device->input_device.pointer_focus;
1093         int32_t sx, sy;
1094
1095         wlsc_surface_transform(es, x, y, &sx, &sy);
1096         wl_client_post_event(es->surface.client,
1097                              &device->input_device.object,
1098                              WL_INPUT_DEVICE_MOTION,
1099                              time, x, y, sx, sy);
1100 }
1101
1102 static void
1103 motion_grab_button(struct wl_grab *grab,
1104                    uint32_t time, int32_t button, int32_t state)
1105 {
1106         wl_client_post_event(grab->input_device->pointer_focus->client,
1107                              &grab->input_device->object,
1108                              WL_INPUT_DEVICE_BUTTON,
1109                              time, button, state);
1110 }
1111
1112 static void
1113 motion_grab_end(struct wl_grab *grab, uint32_t time)
1114 {
1115 }
1116
1117 static const struct wl_grab_interface motion_grab_interface = {
1118         motion_grab_motion,
1119         motion_grab_button,
1120         motion_grab_end
1121 };
1122
1123 WL_EXPORT void
1124 wlsc_compositor_wake(struct wlsc_compositor *compositor)
1125 {
1126         if (compositor->idle_inhibit)
1127                 return;
1128
1129         wlsc_compositor_fade(compositor, 0.0);
1130         compositor->state = WLSC_COMPOSITOR_ACTIVE;
1131
1132         wl_event_source_timer_update(compositor->idle_source,
1133                                      option_idle_time * 1000);
1134 }
1135
1136 static void
1137 wlsc_compositor_idle_inhibit(struct wlsc_compositor *compositor)
1138 {
1139         wlsc_compositor_wake(compositor);
1140         compositor->idle_inhibit++;
1141 }
1142
1143 static void
1144 wlsc_compositor_idle_release(struct wlsc_compositor *compositor)
1145 {
1146         compositor->idle_inhibit--;
1147         wlsc_compositor_wake(compositor);
1148 }
1149
1150 static int
1151 idle_handler(void *data)
1152 {
1153         struct wlsc_compositor *compositor = data;
1154
1155         if (compositor->idle_inhibit)
1156                 return 1;
1157
1158         wlsc_compositor_fade(compositor, 1.0);
1159
1160         return 1;
1161 }
1162
1163 WL_EXPORT void
1164 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1165 {
1166         struct wlsc_surface *es;
1167         struct wlsc_compositor *ec =
1168                 (struct wlsc_compositor *) device->compositor;
1169         struct wlsc_output *output;
1170         const struct wl_grab_interface *interface;
1171         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1172         int32_t sx, sy;
1173         int x_valid = 0, y_valid = 0;
1174         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1175
1176         wlsc_compositor_wake(ec);
1177
1178         wl_list_for_each(output, &ec->output_list, link) {
1179                 if (output->x <= x && x <= output->x + output->current->width)
1180                         x_valid = 1;
1181
1182                 if (output->y <= y && y <= output->y + output->current->height)
1183                         y_valid = 1;
1184
1185                 /* FIXME: calculate this only on output addition/deletion */
1186                 if (output->x < min_x)
1187                         min_x = output->x;
1188                 if (output->y < min_y)
1189                         min_y = output->y;
1190
1191                 if (output->x + output->current->width > max_x)
1192                         max_x = output->x + output->current->width;
1193                 if (output->y + output->current->height > max_y)
1194                         max_y = output->y + output->current->height;
1195         }
1196
1197         if (!x_valid) {
1198                 if (x < min_x)
1199                         x = min_x;
1200                 else if (x >= max_x)
1201                         x = max_x;
1202         }
1203         if (!y_valid) {
1204                 if (y < min_y)
1205                         y = min_y;
1206                 else  if (y >= max_y)
1207                         y = max_y;
1208         }
1209
1210         device->x = x;
1211         device->y = y;
1212
1213         if (device->grab) {
1214                 interface = device->grab->interface;
1215                 interface->motion(device->grab, time, x, y);
1216         } else {
1217                 es = pick_surface(device, &sx, &sy);
1218                 wl_input_device_set_pointer_focus(device,
1219                                                   &es->surface,
1220                                                   time, x, y, sx, sy);
1221                 if (es)
1222                         wl_client_post_event(es->surface.client,
1223                                              &device->object,
1224                                              WL_INPUT_DEVICE_MOTION,
1225                                              time, x, y, sx, sy);
1226         }
1227
1228         wlsc_surface_damage(wd->sprite);
1229
1230         wd->sprite->x = device->x - wd->hotspot_x;
1231         wd->sprite->y = device->y - wd->hotspot_y;
1232
1233         wlsc_surface_damage(wd->sprite);
1234 }
1235
1236 WL_EXPORT void
1237 wlsc_surface_activate(struct wlsc_surface *surface,
1238                       struct wlsc_input_device *device, uint32_t time)
1239 {
1240         struct wlsc_shell *shell = surface->compositor->shell;
1241
1242         wlsc_surface_raise(surface);
1243         if (device->selection)
1244                 shell->set_selection_focus(shell,
1245                                            device->selection,
1246                                            &surface->surface, time);
1247
1248         wl_input_device_set_keyboard_focus(&device->input_device,
1249                                            &surface->surface,
1250                                            time);
1251 }
1252
1253 struct wlsc_binding {
1254         uint32_t key;
1255         uint32_t button;
1256         uint32_t modifier;
1257         wlsc_binding_handler_t handler;
1258         void *data;
1259         struct wl_list link;
1260 };
1261
1262 WL_EXPORT void
1263 notify_button(struct wl_input_device *device,
1264               uint32_t time, int32_t button, int32_t state)
1265 {
1266         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1267         struct wlsc_compositor *compositor =
1268                 (struct wlsc_compositor *) device->compositor;
1269         struct wlsc_binding *b;
1270         struct wlsc_surface *surface =
1271                 (struct wlsc_surface *) device->pointer_focus;
1272
1273         if (state)
1274                 wlsc_compositor_idle_inhibit(compositor);
1275         else
1276                 wlsc_compositor_idle_release(compositor);
1277
1278         if (state && surface && device->grab == NULL) {
1279                 wlsc_surface_activate(surface, wd, time);
1280                 wl_input_device_start_grab(device,
1281                                            &device->motion_grab,
1282                                            button, time);
1283         }
1284
1285         wl_list_for_each(b, &compositor->binding_list, link) {
1286                 if (b->button == button &&
1287                     b->modifier == wd->modifier_state && state) {
1288                         b->handler(&wd->input_device,
1289                                    time, 0, button, state, b->data);
1290                         break;
1291                 }
1292         }
1293
1294         if (device->grab)
1295                 device->grab->interface->button(device->grab, time,
1296                                                 button, state);
1297
1298         if (!state && device->grab && device->grab_button == button)
1299                 wl_input_device_end_grab(device, time);
1300 }
1301
1302 static void
1303 terminate_binding(struct wl_input_device *device, uint32_t time,
1304                   uint32_t key, uint32_t button, uint32_t state, void *data)
1305 {
1306         struct wlsc_compositor *compositor = data;
1307
1308         if (state)
1309                 wl_display_terminate(compositor->wl_display);
1310 }
1311
1312 WL_EXPORT struct wlsc_binding *
1313 wlsc_compositor_add_binding(struct wlsc_compositor *compositor,
1314                             uint32_t key, uint32_t button, uint32_t modifier,
1315                             wlsc_binding_handler_t handler, void *data)
1316 {
1317         struct wlsc_binding *binding;
1318
1319         binding = malloc(sizeof *binding);
1320         if (binding == NULL)
1321                 return NULL;
1322
1323         binding->key = key;
1324         binding->button = button;
1325         binding->modifier = modifier;
1326         binding->handler = handler;
1327         binding->data = data;
1328         wl_list_insert(compositor->binding_list.prev, &binding->link);
1329
1330         return binding;
1331 }
1332
1333 WL_EXPORT void
1334 wlsc_binding_destroy(struct wlsc_binding *binding)
1335 {
1336         wl_list_remove(&binding->link);
1337         free(binding);
1338 }
1339
1340 static void
1341 update_modifier_state(struct wlsc_input_device *device,
1342                       uint32_t key, uint32_t state)
1343 {
1344         uint32_t modifier;
1345
1346         switch (key) {
1347         case KEY_LEFTCTRL:
1348         case KEY_RIGHTCTRL:
1349                 modifier = MODIFIER_CTRL;
1350                 break;
1351
1352         case KEY_LEFTALT:
1353         case KEY_RIGHTALT:
1354                 modifier = MODIFIER_ALT;
1355                 break;
1356
1357         case KEY_LEFTMETA:
1358         case KEY_RIGHTMETA:
1359                 modifier = MODIFIER_SUPER;
1360                 break;
1361
1362         default:
1363                 modifier = 0;
1364                 break;
1365         }
1366
1367         if (state)
1368                 device->modifier_state |= modifier;
1369         else
1370                 device->modifier_state &= ~modifier;
1371 }
1372
1373 WL_EXPORT void
1374 notify_key(struct wl_input_device *device,
1375            uint32_t time, uint32_t key, uint32_t state)
1376 {
1377         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1378         struct wlsc_compositor *compositor =
1379                 (struct wlsc_compositor *) device->compositor;
1380         uint32_t *k, *end;
1381         struct wlsc_binding *b;
1382
1383         if (state)
1384                 wlsc_compositor_idle_inhibit(compositor);
1385         else
1386                 wlsc_compositor_idle_release(compositor);
1387
1388         wl_list_for_each(b, &compositor->binding_list, link) {
1389                 if (b->key == key &&
1390                     b->modifier == wd->modifier_state) {
1391                         b->handler(&wd->input_device,
1392                                    time, key, 0, state, b->data);
1393                         break;
1394                 }
1395         }
1396
1397         update_modifier_state(wd, key, state);
1398         end = device->keys.data + device->keys.size;
1399         for (k = device->keys.data; k < end; k++) {
1400                 if (*k == key)
1401                         *k = *--end;
1402         }
1403         device->keys.size = (void *) end - device->keys.data;
1404         if (state) {
1405                 k = wl_array_add(&device->keys, sizeof *k);
1406                 *k = key;
1407         }
1408
1409         if (device->keyboard_focus != NULL)
1410                 wl_client_post_event(device->keyboard_focus->client,
1411                                      &device->object,
1412                                      WL_INPUT_DEVICE_KEY, time, key, state);
1413 }
1414
1415 WL_EXPORT void
1416 notify_pointer_focus(struct wl_input_device *device,
1417                      uint32_t time, struct wlsc_output *output,
1418                      int32_t x, int32_t y)
1419 {
1420         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1421         struct wlsc_compositor *compositor =
1422                 (struct wlsc_compositor *) device->compositor;
1423         struct wlsc_surface *es;
1424         int32_t sx, sy;
1425
1426         if (output) {
1427                 device->x = x;
1428                 device->y = y;
1429                 es = pick_surface(device, &sx, &sy);
1430                 wl_input_device_set_pointer_focus(device,
1431                                                   &es->surface,
1432                                                   time, x, y, sx, sy);
1433
1434                 compositor->focus = 1;
1435
1436                 wd->sprite->x = device->x - wd->hotspot_x;
1437                 wd->sprite->y = device->y - wd->hotspot_y;
1438         } else {
1439                 wl_input_device_set_pointer_focus(device, NULL,
1440                                                   time, 0, 0, 0, 0);
1441                 compositor->focus = 0;
1442         }
1443
1444         wlsc_surface_damage(wd->sprite);
1445 }
1446
1447 WL_EXPORT void
1448 notify_keyboard_focus(struct wl_input_device *device,
1449                       uint32_t time, struct wlsc_output *output,
1450                       struct wl_array *keys)
1451 {
1452         struct wlsc_input_device *wd =
1453                 (struct wlsc_input_device *) device;
1454         struct wlsc_compositor *compositor =
1455                 (struct wlsc_compositor *) device->compositor;
1456         struct wlsc_surface *es;
1457         uint32_t *k, *end;
1458
1459         if (!wl_list_empty(&compositor->surface_list))
1460                 es = container_of(compositor->surface_list.next,
1461                                   struct wlsc_surface, link);
1462         else
1463                 es = NULL;
1464
1465         if (output) {
1466                 wl_array_copy(&wd->input_device.keys, keys);
1467                 wd->modifier_state = 0;
1468                 end = device->keys.data + device->keys.size;
1469                 for (k = device->keys.data; k < end; k++) {
1470                         wlsc_compositor_idle_inhibit(compositor);
1471                         update_modifier_state(wd, *k, 1);
1472                 }
1473
1474                 if (es->surface.client)
1475                         wl_input_device_set_keyboard_focus(&wd->input_device,
1476                                                            &es->surface, time);
1477         } else {
1478                 end = device->keys.data + device->keys.size;
1479                 for (k = device->keys.data; k < end; k++)
1480                         wlsc_compositor_idle_release(compositor);
1481
1482                 wd->modifier_state = 0;
1483                 wl_input_device_set_keyboard_focus(&wd->input_device,
1484                                                    NULL, time);
1485         }
1486 }
1487
1488
1489 static void
1490 input_device_attach(struct wl_client *client,
1491                     struct wl_input_device *device_base,
1492                     uint32_t time,
1493                     struct wl_buffer *buffer, int32_t x, int32_t y)
1494 {
1495         struct wlsc_input_device *device =
1496                 (struct wlsc_input_device *) device_base;
1497
1498         if (time < device->input_device.pointer_focus_time)
1499                 return;
1500         if (device->input_device.pointer_focus == NULL)
1501                 return;
1502         if (device->input_device.pointer_focus->client != client)
1503                 return;
1504
1505         if (buffer == NULL) {
1506                 wlsc_input_device_set_pointer_image(device,
1507                                                     WLSC_POINTER_LEFT_PTR);
1508                 return;
1509         }
1510
1511         wlsc_input_device_attach_buffer(device, buffer, x, y);
1512 }
1513
1514 const static struct wl_input_device_interface input_device_interface = {
1515         input_device_attach,
1516 };
1517
1518 WL_EXPORT void
1519 wlsc_input_device_init(struct wlsc_input_device *device,
1520                        struct wlsc_compositor *ec)
1521 {
1522         wl_input_device_init(&device->input_device, &ec->compositor);
1523
1524         device->input_device.object.interface = &wl_input_device_interface;
1525         device->input_device.object.implementation =
1526                 (void (**)(void)) &input_device_interface;
1527         wl_display_add_object(ec->wl_display, &device->input_device.object);
1528         wl_display_add_global(ec->wl_display, &device->input_device.object, NULL);
1529
1530         device->sprite = wlsc_surface_create(ec,
1531                                              device->input_device.x,
1532                                              device->input_device.y, 32, 32);
1533         wl_list_insert(&ec->surface_list, &device->sprite->link);
1534
1535         device->hotspot_x = 16;
1536         device->hotspot_y = 16;
1537         device->modifier_state = 0;
1538
1539         device->input_device.motion_grab.interface = &motion_grab_interface;
1540
1541         wl_list_insert(ec->input_device_list.prev, &device->link);
1542
1543         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1544 }
1545
1546 static void
1547 wlsc_output_post_geometry(struct wl_client *client,
1548                           struct wl_object *global, uint32_t version)
1549 {
1550         struct wlsc_output *output =
1551                 container_of(global, struct wlsc_output, object);
1552         struct wlsc_mode *mode;
1553
1554         wl_client_post_event(client, global,
1555                              WL_OUTPUT_GEOMETRY,
1556                              output->x,
1557                              output->y,
1558                              output->mm_width,
1559                              output->mm_height,
1560                              output->subpixel,
1561                              output->make, output->model);
1562
1563         wl_list_for_each (mode, &output->mode_list, link) {
1564                 wl_client_post_event(client, global,
1565                                      WL_OUTPUT_MODE,
1566                                      mode->flags,
1567                                      mode->width, mode->height, mode->refresh);
1568         }
1569 }
1570
1571 static const char vertex_shader[] =
1572         "uniform mat4 proj;\n"
1573         "attribute vec2 position;\n"
1574         "attribute vec2 texcoord;\n"
1575         "varying vec2 v_texcoord;\n"
1576         "void main()\n"
1577         "{\n"
1578         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1579         "   v_texcoord = texcoord;\n"
1580         "}\n";
1581
1582 static const char texture_fragment_shader[] =
1583         "precision mediump float;\n"
1584         "varying vec2 v_texcoord;\n"
1585         "uniform sampler2D tex;\n"
1586         "void main()\n"
1587         "{\n"
1588         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1589         "}\n";
1590
1591 static const char solid_fragment_shader[] =
1592         "precision mediump float;\n"
1593         "uniform vec4 color;\n"
1594         "void main()\n"
1595         "{\n"
1596         "   gl_FragColor = color\n;"
1597         "}\n";
1598
1599 static int
1600 compile_shader(GLenum type, const char *source)
1601 {
1602         GLuint s;
1603         char msg[512];
1604         GLint status;
1605
1606         s = glCreateShader(type);
1607         glShaderSource(s, 1, &source, NULL);
1608         glCompileShader(s);
1609         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
1610         if (!status) {
1611                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
1612                 fprintf(stderr, "shader info: %s\n", msg);
1613                 return GL_NONE;
1614         }
1615
1616         return s;
1617 }
1618
1619 static int
1620 wlsc_shader_init(struct wlsc_shader *shader,
1621                  const char *vertex_source, const char *fragment_source)
1622 {
1623         char msg[512];
1624         GLint status;
1625
1626         shader->vertex_shader =
1627                 compile_shader(GL_VERTEX_SHADER, vertex_source);
1628         shader->fragment_shader =
1629                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1630
1631         shader->program = glCreateProgram();
1632         glAttachShader(shader->program, shader->vertex_shader);
1633         glAttachShader(shader->program, shader->fragment_shader);
1634         glBindAttribLocation(shader->program, 0, "position");
1635         glBindAttribLocation(shader->program, 1, "texcoord");
1636
1637         glLinkProgram(shader->program);
1638         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1639         if (!status) {
1640                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1641                 fprintf(stderr, "link info: %s\n", msg);
1642                 return -1;
1643         }
1644
1645         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1646         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
1647
1648         return 0;
1649 }
1650
1651 static int
1652 init_solid_shader(struct wlsc_shader *shader,
1653                   GLuint vertex_shader, const char *fragment_source)
1654 {
1655         GLint status;
1656         char msg[512];
1657
1658         shader->vertex_shader = vertex_shader;
1659         shader->fragment_shader =
1660                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1661
1662         shader->program = glCreateProgram();
1663         glAttachShader(shader->program, shader->vertex_shader);
1664         glAttachShader(shader->program, shader->fragment_shader);
1665         glBindAttribLocation(shader->program, 0, "position");
1666         glBindAttribLocation(shader->program, 1, "texcoord");
1667
1668         glLinkProgram(shader->program);
1669         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1670         if (!status) {
1671                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1672                 fprintf(stderr, "link info: %s\n", msg);
1673                 return -1;
1674         }
1675
1676         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1677         shader->color_uniform = glGetUniformLocation(shader->program, "color");
1678
1679         return 0;
1680 }
1681
1682 WL_EXPORT void
1683 wlsc_output_destroy(struct wlsc_output *output)
1684 {
1685         pixman_region32_fini(&output->region);
1686         pixman_region32_fini(&output->previous_damage_region);
1687         destroy_surface(&output->background->surface.resource, NULL);
1688 }
1689
1690 WL_EXPORT void
1691 wlsc_output_move(struct wlsc_output *output, int x, int y)
1692 {
1693         struct wlsc_compositor *c = output->compositor;
1694         int flip;
1695
1696         output->x = x;
1697         output->y = y;
1698
1699         if (output->background) {
1700                 output->background->x = x;
1701                 output->background->y = y;
1702         }
1703
1704         pixman_region32_init(&output->previous_damage_region);
1705         pixman_region32_init_rect(&output->region, x, y,
1706                                   output->current->width,
1707                                   output->current->height);
1708
1709         wlsc_matrix_init(&output->matrix);
1710         wlsc_matrix_translate(&output->matrix,
1711                               -output->x - output->current->width / 2.0,
1712                               -output->y - output->current->height / 2.0, 0);
1713
1714         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1715         wlsc_matrix_scale(&output->matrix,
1716                           2.0 / output->current->width,
1717                           flip * 2.0 / output->current->height, 1);
1718
1719         pixman_region32_union(&c->damage_region,
1720                               &c->damage_region, &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_region);
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 }