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                 if (output->background)
 799                         wlsc_surface_draw(output->background,
 800                                           output, &total_damage);
 801                 else
 802                         fade_output(output, 1.0, &total_damage);
 803
 804                 glUseProgram(ec->texture_shader.program);
 805                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 806                         if (ec->overlay == es)
 807                                 continue;
 808
 809                         wlsc_surface_draw(es, output, &total_damage);
 810                 }
 811         }
 812
 813         if (ec->overlay)
 814                 wlsc_surface_draw(ec->overlay, output, &total_damage);
 815
 816         if (ec->fade.spring.current > 0.001)
 817                 fade_output(output, ec->fade.spring.current, &total_damage);
 818 }
 819
 820 static void
 821 repaint(void *data, int msecs)
 822 {
 823         struct wlsc_output *output = data;
 824         struct wlsc_compositor *compositor = output->compositor;
 825         struct wlsc_surface *es;
 826         struct wlsc_animation *animation, *next;
 827
 828         wlsc_output_repaint(output);
 829         output->repaint_needed = 0;
 830         output->repaint_scheduled = 1;
 831         output->present(output);
 832
 833         /* FIXME: Keep the surfaces in an per-output list. */
 834         wl_list_for_each(es, &compositor->surface_list, link) {
 835                 if (es->output == output) {
 836                         wl_display_post_frame(compositor->wl_display,
 837                                               &es->surface, msecs);
 838                 }
 839         }
 840
 841         wl_list_for_each_safe(animation, next,
 842                               &compositor->animation_list, link)
 843                 animation->frame(animation, output, msecs);
 844 }
 845
 846 static void
 847 idle_repaint(void *data)
 848 {
 849         repaint(data, wlsc_compositor_get_time());
 850 }
 851
 852 WL_EXPORT void
 853 wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
 854 {
 855         wlsc_buffer_post_release(output->scanout_buffer);
 856         output->scanout_buffer = NULL;
 857         output->repaint_scheduled = 0;
 858
 859         if (output->repaint_needed)
 860                 repaint(output, msecs);
 861 }
 862
 863 WL_EXPORT void
 864 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 865 {
 866         struct wlsc_output *output;
 867         struct wl_event_loop *loop;
 868
 869         if (compositor->state == WLSC_COMPOSITOR_SLEEPING)
 870                 return;
 871
 872         loop = wl_display_get_event_loop(compositor->wl_display);
 873         wl_list_for_each(output, &compositor->output_list, link) {
 874                 output->repaint_needed = 1;
 875                 if (output->repaint_scheduled)
 876                         continue;
 877
 878                 wl_event_loop_add_idle(loop, idle_repaint, output);
 879                 output->repaint_scheduled = 1;
 880         }
 881 }
 882
 883 WL_EXPORT void
 884 wlsc_compositor_fade(struct wlsc_compositor *compositor, float tint)
 885 {
 886         int done;
 887
 888         done = wlsc_spring_done(&compositor->fade.spring);
 889         compositor->fade.spring.target = tint;
 890         if (wlsc_spring_done(&compositor->fade.spring))
 891                 return;
 892
 893         if (done)
 894                 compositor->fade.spring.timestamp =
 895                         wlsc_compositor_get_time();
 896
 897         wlsc_compositor_damage_all(compositor);
 898         if (wl_list_empty(&compositor->fade.animation.link))
 899                 wl_list_insert(compositor->animation_list.prev,
 900                                &compositor->fade.animation.link);
 901 }
 902
 903 static void
 904 surface_destroy(struct wl_client *client,
 905                 struct wl_surface *surface)
 906 {
 907         wl_resource_destroy(&surface->resource, client,
 908                             wlsc_compositor_get_time());
 909 }
 910
 911 WL_EXPORT void
 912 wlsc_surface_assign_output(struct wlsc_surface *es)
 913 {
 914         struct wlsc_compositor *ec = es->compositor;
 915         struct wlsc_output *output;
 916
 917         struct wlsc_output *tmp = es->output;
 918         es->output = NULL;
 919
 920         wl_list_for_each(output, &ec->output_list, link) {
 921                 if (pixman_region32_contains_point(&output->region,
 922                                                    es->x, es->y, NULL)) {
 923                         if (output != tmp)
 924                                 printf("assiging surface %p to output %p\n",
 925                                        es, output);
 926                         es->output = output;
 927                 }
 928         }
 929
 930         if (es->output == NULL) {
 931                 printf("no output found\n");
 932                 es->output = container_of(ec->output_list.next,
 933                                           struct wlsc_output, link);
 934         }
 935 }
 936
 937 static void
 938 surface_attach(struct wl_client *client,
 939                struct wl_surface *surface, struct wl_buffer *buffer,
 940                int32_t x, int32_t y)
 941 {
 942         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 943
 944         /* FIXME: This damages the entire old surface, but we should
 945          * really just damage the part that's no longer covered by the
 946          * surface.  Anything covered by the new surface will be
 947          * damaged by the client. */
 948         if (es->buffer)
 949                 wlsc_surface_damage(es);
 950
 951         buffer->busy_count++;
 952         wlsc_buffer_post_release(es->buffer);
 953
 954         es->buffer = buffer;
 955         wl_list_remove(&es->buffer_destroy_listener.link);
 956         wl_list_insert(es->buffer->resource.destroy_listener_list.prev,
 957                        &es->buffer_destroy_listener.link);
 958
 959         es->x += x;
 960         es->y += y;
 961         es->width = buffer->width;
 962         es->height = buffer->height;
 963         if (x != 0 || y != 0)
 964                 wlsc_surface_assign_output(es);
 965         if (es->visual == NULL)
 966                 wl_list_insert(&es->compositor->surface_list, &es->link);
 967
 968         wlsc_buffer_attach(buffer, surface);
 969
 970         es->compositor->shell->attach(es->compositor->shell, es);
 971 }
 972
 973 static void
 974 surface_damage(struct wl_client *client,
 975                struct wl_surface *surface,
 976                int32_t x, int32_t y, int32_t width, int32_t height)
 977 {
 978         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 979
 980         wlsc_surface_damage_rectangle(es, x, y, width, height);
 981 }
 982
 983 const static struct wl_surface_interface surface_interface = {
 984         surface_destroy,
 985         surface_attach,
 986         surface_damage
 987 };
 988
 989 static void
 990 wlsc_input_device_attach(struct wlsc_input_device *device,
 991                          int x, int y, int width, int height)
 992 {
 993         wlsc_surface_damage(device->sprite);
 994
 995         device->hotspot_x = x;
 996         device->hotspot_y = y;
 997
 998         device->sprite->x = device->input_device.x - device->hotspot_x;
 999         device->sprite->y = device->input_device.y - device->hotspot_y;
1000         device->sprite->width = width;
1001         device->sprite->height = height;
1002
1003         wlsc_surface_damage(device->sprite);
1004 }
1005
1006 static void
1007 wlsc_input_device_attach_buffer(struct wlsc_input_device *device,
1008                                 struct wl_buffer *buffer, int x, int y)
1009 {
1010         wlsc_buffer_attach(buffer, &device->sprite->surface);
1011         wlsc_input_device_attach(device, x, y, buffer->width, buffer->height);
1012 }
1013
1014 static void
1015 wlsc_input_device_attach_sprite(struct wlsc_input_device *device,
1016                                 struct wlsc_sprite *sprite, int x, int y)
1017 {
1018         wlsc_sprite_attach(sprite, &device->sprite->surface);
1019         wlsc_input_device_attach(device, x, y, sprite->width, sprite->height);
1020 }
1021
1022 WL_EXPORT void
1023 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
1024                                     enum wlsc_pointer_type type)
1025 {
1026         struct wlsc_compositor *compositor =
1027                 (struct wlsc_compositor *) device->input_device.compositor;
1028
1029         wlsc_input_device_attach_sprite(device,
1030                                         compositor->pointer_sprites[type],
1031                                         pointer_images[type].hotspot_x,
1032                                         pointer_images[type].hotspot_y);
1033 }
1034
1035 static void
1036 compositor_create_surface(struct wl_client *client,
1037                           struct wl_compositor *compositor, uint32_t id)
1038 {
1039         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
1040         struct wlsc_surface *surface;
1041
1042         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
1043         if (surface == NULL) {
1044                 wl_client_post_no_memory(client);
1045                 return;
1046         }
1047
1048         surface->surface.resource.destroy = destroy_surface;
1049
1050         surface->surface.resource.object.id = id;
1051         surface->surface.resource.object.interface = &wl_surface_interface;
1052         surface->surface.resource.object.implementation =
1053                 (void (**)(void)) &surface_interface;
1054         surface->surface.client = client;
1055
1056         wl_client_add_resource(client, &surface->surface.resource);
1057 }
1058
1059 const static struct wl_compositor_interface compositor_interface = {
1060         compositor_create_surface,
1061 };
1062
1063 static void
1064 wlsc_surface_transform(struct wlsc_surface *surface,
1065                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
1066 {
1067         *sx = x - surface->x;
1068         *sy = y - surface->y;
1069 }
1070
1071 WL_EXPORT struct wlsc_surface *
1072 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
1073 {
1074         struct wlsc_compositor *ec =
1075                 (struct wlsc_compositor *) device->compositor;
1076         struct wlsc_surface *es;
1077
1078         wl_list_for_each(es, &ec->surface_list, link) {
1079                 if (es->surface.client == NULL)
1080                         continue;
1081                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
1082                 if (0 <= *sx && *sx < es->width &&
1083                     0 <= *sy && *sy < es->height)
1084                         return es;
1085         }
1086
1087         return NULL;
1088 }
1089
1090
1091 static void
1092 motion_grab_motion(struct wl_grab *grab,
1093                    uint32_t time, int32_t x, int32_t y)
1094 {
1095         struct wlsc_input_device *device =
1096                 (struct wlsc_input_device *) grab->input_device;
1097         struct wlsc_surface *es =
1098                 (struct wlsc_surface *) device->input_device.pointer_focus;
1099         int32_t sx, sy;
1100
1101         wlsc_surface_transform(es, x, y, &sx, &sy);
1102         wl_client_post_event(es->surface.client,
1103                              &device->input_device.object,
1104                              WL_INPUT_DEVICE_MOTION,
1105                              time, x, y, sx, sy);
1106 }
1107
1108 static void
1109 motion_grab_button(struct wl_grab *grab,
1110                    uint32_t time, int32_t button, int32_t state)
1111 {
1112         wl_client_post_event(grab->input_device->pointer_focus->client,
1113                              &grab->input_device->object,
1114                              WL_INPUT_DEVICE_BUTTON,
1115                              time, button, state);
1116 }
1117
1118 static void
1119 motion_grab_end(struct wl_grab *grab, uint32_t time)
1120 {
1121 }
1122
1123 static const struct wl_grab_interface motion_grab_interface = {
1124         motion_grab_motion,
1125         motion_grab_button,
1126         motion_grab_end
1127 };
1128
1129 WL_EXPORT void
1130 wlsc_compositor_wake(struct wlsc_compositor *compositor)
1131 {
1132         if (compositor->idle_inhibit)
1133                 return;
1134
1135         wlsc_compositor_fade(compositor, 0.0);
1136         compositor->state = WLSC_COMPOSITOR_ACTIVE;
1137
1138         wl_event_source_timer_update(compositor->idle_source,
1139                                      option_idle_time * 1000);
1140 }
1141
1142 static void
1143 wlsc_compositor_idle_inhibit(struct wlsc_compositor *compositor)
1144 {
1145         wlsc_compositor_wake(compositor);
1146         compositor->idle_inhibit++;
1147 }
1148
1149 static void
1150 wlsc_compositor_idle_release(struct wlsc_compositor *compositor)
1151 {
1152         compositor->idle_inhibit--;
1153         wlsc_compositor_wake(compositor);
1154 }
1155
1156 static int
1157 idle_handler(void *data)
1158 {
1159         struct wlsc_compositor *compositor = data;
1160
1161         if (compositor->idle_inhibit)
1162                 return 1;
1163
1164         wlsc_compositor_fade(compositor, 1.0);
1165
1166         return 1;
1167 }
1168
1169 WL_EXPORT void
1170 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1171 {
1172         struct wlsc_surface *es;
1173         struct wlsc_compositor *ec =
1174                 (struct wlsc_compositor *) device->compositor;
1175         struct wlsc_output *output;
1176         const struct wl_grab_interface *interface;
1177         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1178         int32_t sx, sy;
1179         int x_valid = 0, y_valid = 0;
1180         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1181
1182         wlsc_compositor_wake(ec);
1183
1184         wl_list_for_each(output, &ec->output_list, link) {
1185                 if (output->x <= x && x <= output->x + output->current->width)
1186                         x_valid = 1;
1187
1188                 if (output->y <= y && y <= output->y + output->current->height)
1189                         y_valid = 1;
1190
1191                 /* FIXME: calculate this only on output addition/deletion */
1192                 if (output->x < min_x)
1193                         min_x = output->x;
1194                 if (output->y < min_y)
1195                         min_y = output->y;
1196
1197                 if (output->x + output->current->width > max_x)
1198                         max_x = output->x + output->current->width;
1199                 if (output->y + output->current->height > max_y)
1200                         max_y = output->y + output->current->height;
1201         }
1202
1203         if (!x_valid) {
1204                 if (x < min_x)
1205                         x = min_x;
1206                 else if (x >= max_x)
1207                         x = max_x;
1208         }
1209         if (!y_valid) {
1210                 if (y < min_y)
1211                         y = min_y;
1212                 else  if (y >= max_y)
1213                         y = max_y;
1214         }
1215
1216         device->x = x;
1217         device->y = y;
1218
1219         if (device->grab) {
1220                 interface = device->grab->interface;
1221                 interface->motion(device->grab, time, x, y);
1222         } else {
1223                 es = pick_surface(device, &sx, &sy);
1224                 wl_input_device_set_pointer_focus(device,
1225                                                   &es->surface,
1226                                                   time, x, y, sx, sy);
1227                 if (es)
1228                         wl_client_post_event(es->surface.client,
1229                                              &device->object,
1230                                              WL_INPUT_DEVICE_MOTION,
1231                                              time, x, y, sx, sy);
1232         }
1233
1234         wlsc_surface_damage(wd->sprite);
1235
1236         wd->sprite->x = device->x - wd->hotspot_x;
1237         wd->sprite->y = device->y - wd->hotspot_y;
1238
1239         wlsc_surface_damage(wd->sprite);
1240 }
1241
1242 WL_EXPORT void
1243 wlsc_surface_activate(struct wlsc_surface *surface,
1244                       struct wlsc_input_device *device, uint32_t time)
1245 {
1246         struct wlsc_shell *shell = surface->compositor->shell;
1247
1248         wlsc_surface_raise(surface);
1249         if (device->selection)
1250                 shell->set_selection_focus(shell,
1251                                            device->selection,
1252                                            &surface->surface, time);
1253
1254         wl_input_device_set_keyboard_focus(&device->input_device,
1255                                            &surface->surface,
1256                                            time);
1257 }
1258
1259 struct wlsc_binding {
1260         uint32_t key;
1261         uint32_t button;
1262         uint32_t modifier;
1263         wlsc_binding_handler_t handler;
1264         void *data;
1265         struct wl_list link;
1266 };
1267
1268 WL_EXPORT void
1269 notify_button(struct wl_input_device *device,
1270               uint32_t time, int32_t button, int32_t state)
1271 {
1272         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1273         struct wlsc_compositor *compositor =
1274                 (struct wlsc_compositor *) device->compositor;
1275         struct wlsc_binding *b;
1276         struct wlsc_surface *surface =
1277                 (struct wlsc_surface *) device->pointer_focus;
1278
1279         if (state)
1280                 wlsc_compositor_idle_inhibit(compositor);
1281         else
1282                 wlsc_compositor_idle_release(compositor);
1283
1284         if (state && surface && device->grab == NULL) {
1285                 wlsc_surface_activate(surface, wd, time);
1286                 wl_input_device_start_grab(device,
1287                                            &device->motion_grab,
1288                                            button, time);
1289         }
1290
1291         wl_list_for_each(b, &compositor->binding_list, link) {
1292                 if (b->button == button &&
1293                     b->modifier == wd->modifier_state && state) {
1294                         b->handler(&wd->input_device,
1295                                    time, 0, button, state, b->data);
1296                         break;
1297                 }
1298         }
1299
1300         if (device->grab)
1301                 device->grab->interface->button(device->grab, time,
1302                                                 button, state);
1303
1304         if (!state && device->grab && device->grab_button == button)
1305                 wl_input_device_end_grab(device, time);
1306 }
1307
1308 static void
1309 terminate_binding(struct wl_input_device *device, uint32_t time,
1310                   uint32_t key, uint32_t button, uint32_t state, void *data)
1311 {
1312         struct wlsc_compositor *compositor = data;
1313
1314         if (state)
1315                 wl_display_terminate(compositor->wl_display);
1316 }
1317
1318 WL_EXPORT struct wlsc_binding *
1319 wlsc_compositor_add_binding(struct wlsc_compositor *compositor,
1320                             uint32_t key, uint32_t button, uint32_t modifier,
1321                             wlsc_binding_handler_t handler, void *data)
1322 {
1323         struct wlsc_binding *binding;
1324
1325         binding = malloc(sizeof *binding);
1326         if (binding == NULL)
1327                 return NULL;
1328
1329         binding->key = key;
1330         binding->button = button;
1331         binding->modifier = modifier;
1332         binding->handler = handler;
1333         binding->data = data;
1334         wl_list_insert(compositor->binding_list.prev, &binding->link);
1335
1336         return binding;
1337 }
1338
1339 WL_EXPORT void
1340 wlsc_binding_destroy(struct wlsc_binding *binding)
1341 {
1342         wl_list_remove(&binding->link);
1343         free(binding);
1344 }
1345
1346 static void
1347 update_modifier_state(struct wlsc_input_device *device,
1348                       uint32_t key, uint32_t state)
1349 {
1350         uint32_t modifier;
1351
1352         switch (key) {
1353         case KEY_LEFTCTRL:
1354         case KEY_RIGHTCTRL:
1355                 modifier = MODIFIER_CTRL;
1356                 break;
1357
1358         case KEY_LEFTALT:
1359         case KEY_RIGHTALT:
1360                 modifier = MODIFIER_ALT;
1361                 break;
1362
1363         case KEY_LEFTMETA:
1364         case KEY_RIGHTMETA:
1365                 modifier = MODIFIER_SUPER;
1366                 break;
1367
1368         default:
1369                 modifier = 0;
1370                 break;
1371         }
1372
1373         if (state)
1374                 device->modifier_state |= modifier;
1375         else
1376                 device->modifier_state &= ~modifier;
1377 }
1378
1379 WL_EXPORT void
1380 notify_key(struct wl_input_device *device,
1381            uint32_t time, uint32_t key, uint32_t state)
1382 {
1383         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1384         struct wlsc_compositor *compositor =
1385                 (struct wlsc_compositor *) device->compositor;
1386         uint32_t *k, *end;
1387         struct wlsc_binding *b;
1388
1389         if (state)
1390                 wlsc_compositor_idle_inhibit(compositor);
1391         else
1392                 wlsc_compositor_idle_release(compositor);
1393
1394         wl_list_for_each(b, &compositor->binding_list, link) {
1395                 if (b->key == key &&
1396                     b->modifier == wd->modifier_state) {
1397                         b->handler(&wd->input_device,
1398                                    time, key, 0, state, b->data);
1399                         break;
1400                 }
1401         }
1402
1403         update_modifier_state(wd, key, state);
1404         end = device->keys.data + device->keys.size;
1405         for (k = device->keys.data; k < end; k++) {
1406                 if (*k == key)
1407                         *k = *--end;
1408         }
1409         device->keys.size = (void *) end - device->keys.data;
1410         if (state) {
1411                 k = wl_array_add(&device->keys, sizeof *k);
1412                 *k = key;
1413         }
1414
1415         if (device->keyboard_focus != NULL)
1416                 wl_client_post_event(device->keyboard_focus->client,
1417                                      &device->object,
1418                                      WL_INPUT_DEVICE_KEY, time, key, state);
1419 }
1420
1421 WL_EXPORT void
1422 notify_pointer_focus(struct wl_input_device *device,
1423                      uint32_t time, struct wlsc_output *output,
1424                      int32_t x, int32_t y)
1425 {
1426         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1427         struct wlsc_compositor *compositor =
1428                 (struct wlsc_compositor *) device->compositor;
1429         struct wlsc_surface *es;
1430         int32_t sx, sy;
1431
1432         if (output) {
1433                 device->x = x;
1434                 device->y = y;
1435                 es = pick_surface(device, &sx, &sy);
1436                 wl_input_device_set_pointer_focus(device,
1437                                                   &es->surface,
1438                                                   time, x, y, sx, sy);
1439
1440                 compositor->focus = 1;
1441
1442                 wd->sprite->x = device->x - wd->hotspot_x;
1443                 wd->sprite->y = device->y - wd->hotspot_y;
1444         } else {
1445                 wl_input_device_set_pointer_focus(device, NULL,
1446                                                   time, 0, 0, 0, 0);
1447                 compositor->focus = 0;
1448         }
1449
1450         wlsc_surface_damage(wd->sprite);
1451 }
1452
1453 WL_EXPORT void
1454 notify_keyboard_focus(struct wl_input_device *device,
1455                       uint32_t time, struct wlsc_output *output,
1456                       struct wl_array *keys)
1457 {
1458         struct wlsc_input_device *wd =
1459                 (struct wlsc_input_device *) device;
1460         struct wlsc_compositor *compositor =
1461                 (struct wlsc_compositor *) device->compositor;
1462         struct wlsc_surface *es;
1463         uint32_t *k, *end;
1464
1465         if (!wl_list_empty(&compositor->surface_list))
1466                 es = container_of(compositor->surface_list.next,
1467                                   struct wlsc_surface, link);
1468         else
1469                 es = NULL;
1470
1471         if (output) {
1472                 wl_array_copy(&wd->input_device.keys, keys);
1473                 wd->modifier_state = 0;
1474                 end = device->keys.data + device->keys.size;
1475                 for (k = device->keys.data; k < end; k++) {
1476                         wlsc_compositor_idle_inhibit(compositor);
1477                         update_modifier_state(wd, *k, 1);
1478                 }
1479
1480                 wl_input_device_set_keyboard_focus(&wd->input_device,
1481                                                    &es->surface, time);
1482         } else {
1483                 end = device->keys.data + device->keys.size;
1484                 for (k = device->keys.data; k < end; k++)
1485                         wlsc_compositor_idle_release(compositor);
1486
1487                 wd->modifier_state = 0;
1488                 wl_input_device_set_keyboard_focus(&wd->input_device,
1489                                                    NULL, time);
1490         }
1491 }
1492
1493
1494 static void
1495 input_device_attach(struct wl_client *client,
1496                     struct wl_input_device *device_base,
1497                     uint32_t time,
1498                     struct wl_buffer *buffer, int32_t x, int32_t y)
1499 {
1500         struct wlsc_input_device *device =
1501                 (struct wlsc_input_device *) device_base;
1502
1503         if (time < device->input_device.pointer_focus_time)
1504                 return;
1505         if (device->input_device.pointer_focus == NULL)
1506                 return;
1507         if (device->input_device.pointer_focus->client != client)
1508                 return;
1509
1510         if (buffer == NULL) {
1511                 wlsc_input_device_set_pointer_image(device,
1512                                                     WLSC_POINTER_LEFT_PTR);
1513                 return;
1514         }
1515
1516         wlsc_input_device_attach_buffer(device, buffer, x, y);
1517 }
1518
1519 const static struct wl_input_device_interface input_device_interface = {
1520         input_device_attach,
1521 };
1522
1523 WL_EXPORT void
1524 wlsc_input_device_init(struct wlsc_input_device *device,
1525                        struct wlsc_compositor *ec)
1526 {
1527         wl_input_device_init(&device->input_device, &ec->compositor);
1528
1529         device->input_device.object.interface = &wl_input_device_interface;
1530         device->input_device.object.implementation =
1531                 (void (**)(void)) &input_device_interface;
1532         wl_display_add_object(ec->wl_display, &device->input_device.object);
1533         wl_display_add_global(ec->wl_display, &device->input_device.object, NULL);
1534
1535         device->sprite = wlsc_surface_create(ec,
1536                                              device->input_device.x,
1537                                              device->input_device.y, 32, 32);
1538         wl_list_insert(&ec->surface_list, &device->sprite->link);
1539
1540         device->hotspot_x = 16;
1541         device->hotspot_y = 16;
1542         device->modifier_state = 0;
1543
1544         device->input_device.motion_grab.interface = &motion_grab_interface;
1545
1546         wl_list_insert(ec->input_device_list.prev, &device->link);
1547
1548         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1549 }
1550
1551 static void
1552 wlsc_output_post_geometry(struct wl_client *client,
1553                           struct wl_object *global, uint32_t version)
1554 {
1555         struct wlsc_output *output =
1556                 container_of(global, struct wlsc_output, object);
1557         struct wlsc_mode *mode;
1558
1559         wl_client_post_event(client, global,
1560                              WL_OUTPUT_GEOMETRY,
1561                              output->x,
1562                              output->y,
1563                              output->mm_width,
1564                              output->mm_height,
1565                              output->subpixel,
1566                              output->make, output->model);
1567
1568         wl_list_for_each (mode, &output->mode_list, link) {
1569                 wl_client_post_event(client, global,
1570                                      WL_OUTPUT_MODE,
1571                                      mode->flags,
1572                                      mode->width, mode->height, mode->refresh);
1573         }
1574 }
1575
1576 static const char vertex_shader[] =
1577         "uniform mat4 proj;\n"
1578         "attribute vec2 position;\n"
1579         "attribute vec2 texcoord;\n"
1580         "varying vec2 v_texcoord;\n"
1581         "void main()\n"
1582         "{\n"
1583         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1584         "   v_texcoord = texcoord;\n"
1585         "}\n";
1586
1587 static const char texture_fragment_shader[] =
1588         "precision mediump float;\n"
1589         "varying vec2 v_texcoord;\n"
1590         "uniform sampler2D tex;\n"
1591         "void main()\n"
1592         "{\n"
1593         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1594         "}\n";
1595
1596 static const char solid_fragment_shader[] =
1597         "precision mediump float;\n"
1598         "uniform vec4 color;\n"
1599         "void main()\n"
1600         "{\n"
1601         "   gl_FragColor = color\n;"
1602         "}\n";
1603
1604 static int
1605 compile_shader(GLenum type, const char *source)
1606 {
1607         GLuint s;
1608         char msg[512];
1609         GLint status;
1610
1611         s = glCreateShader(type);
1612         glShaderSource(s, 1, &source, NULL);
1613         glCompileShader(s);
1614         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
1615         if (!status) {
1616                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
1617                 fprintf(stderr, "shader info: %s\n", msg);
1618                 return GL_NONE;
1619         }
1620
1621         return s;
1622 }
1623
1624 static int
1625 wlsc_shader_init(struct wlsc_shader *shader,
1626                  const char *vertex_source, const char *fragment_source)
1627 {
1628         char msg[512];
1629         GLint status;
1630
1631         shader->vertex_shader =
1632                 compile_shader(GL_VERTEX_SHADER, vertex_source);
1633         shader->fragment_shader =
1634                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1635
1636         shader->program = glCreateProgram();
1637         glAttachShader(shader->program, shader->vertex_shader);
1638         glAttachShader(shader->program, shader->fragment_shader);
1639         glBindAttribLocation(shader->program, 0, "position");
1640         glBindAttribLocation(shader->program, 1, "texcoord");
1641
1642         glLinkProgram(shader->program);
1643         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1644         if (!status) {
1645                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1646                 fprintf(stderr, "link info: %s\n", msg);
1647                 return -1;
1648         }
1649
1650         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1651         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
1652
1653         return 0;
1654 }
1655
1656 static int
1657 init_solid_shader(struct wlsc_shader *shader,
1658                   GLuint vertex_shader, const char *fragment_source)
1659 {
1660         GLint status;
1661         char msg[512];
1662
1663         shader->vertex_shader = vertex_shader;
1664         shader->fragment_shader =
1665                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1666
1667         shader->program = glCreateProgram();
1668         glAttachShader(shader->program, shader->vertex_shader);
1669         glAttachShader(shader->program, shader->fragment_shader);
1670         glBindAttribLocation(shader->program, 0, "position");
1671         glBindAttribLocation(shader->program, 1, "texcoord");
1672
1673         glLinkProgram(shader->program);
1674         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1675         if (!status) {
1676                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1677                 fprintf(stderr, "link info: %s\n", msg);
1678                 return -1;
1679         }
1680
1681         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1682         shader->color_uniform = glGetUniformLocation(shader->program, "color");
1683
1684         return 0;
1685 }
1686
1687 WL_EXPORT void
1688 wlsc_output_destroy(struct wlsc_output *output)
1689 {
1690         pixman_region32_fini(&output->region);
1691         pixman_region32_fini(&output->previous_damage_region);
1692         destroy_surface(&output->background->surface.resource, NULL);
1693 }
1694
1695 WL_EXPORT void
1696 wlsc_output_move(struct wlsc_output *output, int x, int y)
1697 {
1698         struct wlsc_compositor *c = output->compositor;
1699         int flip;
1700
1701         output->x = x;
1702         output->y = y;
1703
1704         if (output->background) {
1705                 output->background->x = x;
1706                 output->background->y = y;
1707         }
1708
1709         pixman_region32_init(&output->previous_damage_region);
1710         pixman_region32_init_rect(&output->region, x, y,
1711                                   output->current->width,
1712                                   output->current->height);
1713
1714         wlsc_matrix_init(&output->matrix);
1715         wlsc_matrix_translate(&output->matrix,
1716                               -output->x - output->current->width / 2.0,
1717                               -output->y - output->current->height / 2.0, 0);
1718
1719         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1720         wlsc_matrix_scale(&output->matrix,
1721                           2.0 / output->current->width,
1722                           flip * 2.0 / output->current->height, 1);
1723
1724         pixman_region32_union(&c->damage_region,
1725                               &c->damage_region, &output->region);
1726 }
1727
1728 WL_EXPORT void
1729 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1730                  int x, int y, int width, int height, uint32_t flags)
1731 {
1732         output->compositor = c;
1733         output->x = x;
1734         output->y = y;
1735         output->mm_width = width;
1736         output->mm_height = height;
1737
1738         output->background =
1739                 background_create(output, option_background);
1740
1741         output->flags = flags;
1742         wlsc_output_move(output, x, y);
1743
1744         output->scanout_buffer_destroy_listener.func =
1745                 output_handle_scanout_buffer_destroy;
1746         wl_list_init(&output->scanout_buffer_destroy_listener.link);
1747
1748         output->object.interface = &wl_output_interface;
1749         wl_display_add_object(c->wl_display, &output->object);
1750         wl_display_add_global(c->wl_display, &output->object,
1751                               wlsc_output_post_geometry);
1752 }
1753
1754 static void
1755 shm_buffer_created(struct wl_buffer *buffer)
1756 {
1757         struct wl_list *surfaces_attached_to;
1758
1759         surfaces_attached_to = malloc(sizeof *surfaces_attached_to);
1760         if (!surfaces_attached_to) {
1761                 buffer->user_data = NULL;
1762                 return;
1763         }
1764
1765         wl_list_init(surfaces_attached_to);
1766
1767         buffer->user_data = surfaces_attached_to;
1768 }
1769
1770 static void
1771 shm_buffer_damaged(struct wl_buffer *buffer,
1772                    int32_t x, int32_t y, int32_t width, int32_t height)
1773 {
1774         struct wl_list *surfaces_attached_to = buffer->user_data;
1775         struct wlsc_surface *es;
1776         GLsizei tex_width = wl_shm_buffer_get_stride(buffer) / 4;
1777
1778         wl_list_for_each(es, surfaces_attached_to, buffer_link) {
1779                 glBindTexture(GL_TEXTURE_2D, es->texture);
1780                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1781                              tex_width, buffer->height, 0,
1782                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1783                              wl_shm_buffer_get_data(buffer));
1784                 /* Hmm, should use glTexSubImage2D() here but GLES2 doesn't
1785                  * support any unpack attributes except GL_UNPACK_ALIGNMENT. */
1786         }
1787 }
1788
1789 static void
1790 shm_buffer_destroyed(struct wl_buffer *buffer)
1791 {
1792         struct wl_list *surfaces_attached_to = buffer->user_data;
1793         struct wlsc_surface *es, *next;
1794
1795         wl_list_for_each_safe(es, next, surfaces_attached_to, buffer_link) {
1796                 wl_list_remove(&es->buffer_link);
1797                 wl_list_init(&es->buffer_link);
1798         }
1799
1800         free(surfaces_attached_to);
1801 }
1802
1803 const static struct wl_shm_callbacks shm_callbacks = {
1804         shm_buffer_created,
1805         shm_buffer_damaged,
1806         shm_buffer_destroyed
1807 };
1808
1809 WL_EXPORT int
1810 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1811 {
1812         struct wl_event_loop *loop;
1813         const char *extensions;
1814
1815         ec->wl_display = display;
1816
1817         wl_compositor_init(&ec->compositor, &compositor_interface, display);
1818
1819         ec->shm = wl_shm_init(display, &shm_callbacks);
1820
1821         ec->image_target_texture_2d =
1822                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
1823         ec->image_target_renderbuffer_storage = (void *)
1824                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
1825         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
1826         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
1827         ec->bind_display =
1828                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
1829         ec->unbind_display =
1830                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
1831
1832         extensions = (const char *) glGetString(GL_EXTENSIONS);
1833         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
1834                 fprintf(stderr,
1835                         "GL_EXT_texture_format_BGRA8888 not available\n");
1836                 return -1;
1837         }
1838
1839         extensions =
1840                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
1841         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
1842                 ec->has_bind_display = 1;
1843         if (ec->has_bind_display)
1844                 ec->bind_display(ec->display, ec->wl_display);
1845
1846         wl_list_init(&ec->surface_list);
1847         wl_list_init(&ec->input_device_list);
1848         wl_list_init(&ec->output_list);
1849         wl_list_init(&ec->binding_list);
1850         wl_list_init(&ec->animation_list);
1851         wlsc_spring_init(&ec->fade.spring, 0.8, 0.0, 0.0);
1852         ec->fade.animation.frame = fade_frame;
1853         wl_list_init(&ec->fade.animation.link);
1854
1855         wlsc_compositor_add_binding(ec, KEY_BACKSPACE, 0,
1856                                     MODIFIER_CTRL | MODIFIER_ALT,
1857                                     terminate_binding, ec);
1858
1859         create_pointer_images(ec);
1860
1861         screenshooter_create(ec);
1862
1863         glActiveTexture(GL_TEXTURE0);
1864
1865         if (wlsc_shader_init(&ec->texture_shader,
1866                              vertex_shader, texture_fragment_shader) < 0)
1867                 return -1;
1868         if (init_solid_shader(&ec->solid_shader,
1869                               ec->texture_shader.vertex_shader,
1870                               solid_fragment_shader) < 0)
1871                 return -1;
1872
1873         loop = wl_display_get_event_loop(ec->wl_display);
1874         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
1875         wl_event_source_timer_update(ec->idle_source, option_idle_time * 1000);
1876
1877         pixman_region32_init(&ec->damage_region);
1878         wlsc_compositor_schedule_repaint(ec);
1879
1880         return 0;
1881 }
1882
1883 static int on_term_signal(int signal_number, void *data)
1884 {
1885         struct wlsc_compositor *ec = data;
1886
1887         wl_display_terminate(ec->wl_display);
1888
1889         return 1;
1890 }
1891
1892 static void *
1893 load_module(const char *name, const char *entrypoint, void **handle)
1894 {
1895         char path[PATH_MAX];
1896         void *module, *init;
1897
1898         if (name[0] != '/')
1899                 snprintf(path, sizeof path, MODULEDIR "/%s", name);
1900         else
1901                 snprintf(path, sizeof path, "%s", name);
1902
1903         module = dlopen(path, RTLD_LAZY);
1904         if (!module) {
1905                 fprintf(stderr,
1906                         "failed to load module: %s\n", dlerror());
1907                 return NULL;
1908         }
1909
1910         init = dlsym(module, entrypoint);
1911         if (!init) {
1912                 fprintf(stderr,
1913                         "failed to lookup init function: %s\n", dlerror());
1914                 return NULL;
1915         }
1916
1917         return init;
1918 }
1919
1920 int main(int argc, char *argv[])
1921 {
1922         struct wl_display *display;
1923         struct wlsc_compositor *ec;
1924         struct wl_event_loop *loop;
1925         int o, xserver = 0;
1926         void *shell_module, *backend_module;
1927         int (*shell_init)(struct wlsc_compositor *ec);
1928         struct wlsc_compositor
1929                 *(*backend_init)(struct wl_display *display, char *options);
1930         char *backend = NULL;
1931         char *backend_options = "";
1932         char *shell = NULL;
1933         char *p;
1934
1935         static const char opts[] = "B:b:o:S:i:s:x";
1936         static const struct option longopts[ ] = {
1937                 { "backend", 1, NULL, 'B' },
1938                 { "backend-options", 1, NULL, 'o' },
1939                 { "background", 1, NULL, 'b' },
1940                 { "socket", 1, NULL, 'S' },
1941                 { "idle-time", 1, NULL, 'i' },
1942                 { "shell", 1, NULL, 's' },
1943                 { "xserver", 0, NULL, 'x' },
1944                 { NULL, }
1945         };
1946
1947         while (o = getopt_long(argc, argv, opts, longopts, &o), o > 0) {
1948                 switch (o) {
1949                 case 'b':
1950                         option_background = optarg;
1951                         break;
1952                 case 'B':
1953                         backend = optarg;
1954                         break;
1955                 case 'o':
1956                         backend_options = optarg;
1957                         break;
1958                 case 'S':
1959                         option_socket_name = optarg;
1960                         break;
1961                 case 'i':
1962                         option_idle_time = strtol(optarg, &p, 0);
1963                         if (*p != '\0') {
1964                                 fprintf(stderr,
1965                                         "invalid idle time option: %s\n",
1966                                         optarg);
1967                                 exit(EXIT_FAILURE);
1968                         }
1969                         break;
1970                 case 's':
1971                         shell = optarg;
1972                         break;
1973                 case 'x':
1974                         xserver = 1;
1975                         break;
1976                 }
1977         }
1978
1979         display = wl_display_create();
1980
1981         ec = NULL;
1982
1983         if (!backend) {
1984                 if (getenv("WAYLAND_DISPLAY"))
1985                         backend = "wayland-backend.so";
1986                 else if (getenv("DISPLAY"))
1987                         backend = "x11-backend.so";
1988                 else if (getenv("OPENWFD"))
1989                         backend = "openwfd-backend.so";
1990                 else
1991                         backend = "drm-backend.so";
1992         }
1993
1994         if (!shell)
1995                 shell = "desktop-shell.so";
1996
1997         backend_init = load_module(backend, "backend_init", &backend_module);
1998         if (!backend_init)
1999                 exit(EXIT_FAILURE);
2000
2001         shell_init = load_module(shell, "shell_init", &shell_module);
2002         if (!shell_init)
2003                 exit(EXIT_FAILURE);
2004
2005         ec = backend_init(display, backend_options);
2006         if (ec == NULL) {
2007                 fprintf(stderr, "failed to create compositor\n");
2008                 exit(EXIT_FAILURE);
2009         }
2010
2011         if (shell_init(ec) < 0)
2012                 exit(EXIT_FAILURE);
2013
2014         if (xserver)
2015                 wlsc_xserver_init(display);
2016
2017         if (wl_display_add_socket(display, option_socket_name)) {
2018                 fprintf(stderr, "failed to add socket: %m\n");
2019                 exit(EXIT_FAILURE);
2020         }
2021
2022         loop = wl_display_get_event_loop(ec->wl_display);
2023         wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
2024         wl_event_loop_add_signal(loop, SIGINT, on_term_signal, ec);
2025
2026         wl_list_init(&child_process_list);
2027         wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler, NULL);
2028
2029         wl_display_run(display);
2030
2031         if (ec->has_bind_display)
2032                 ec->unbind_display(ec->display, display);
2033         wl_display_destroy(display);
2034
2035         ec->destroy(ec);
2036
2037         return 0;
2038 }