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 <sys/ioctl.h>
  30 #include <fcntl.h>
  31 #include <unistd.h>
  32 #include <gdk-pixbuf/gdk-pixbuf.h>
  33 #include <math.h>
  34 #include <linux/input.h>
  35 #include <dlfcn.h>
  36
  37 #include "wayland-server.h"
  38 #include "compositor.h"
  39
  40 /* The plan here is to generate a random anonymous socket name and
  41  * advertise that through a service on the session dbus.
  42  */
  43 static const char *option_socket_name = NULL;
  44 static const char *option_background = "background.jpg";
  45 static const char *option_geometry = "1024x640";
  46 static const char *option_shell = NULL;
  47 static int option_idle_time = 5;
  48 static int option_connector = 0;
  49
  50 static const GOptionEntry option_entries[] = {
  51         { "background", 'b', 0, G_OPTION_ARG_STRING,
  52           &option_background, "Background image" },
  53         { "connector", 'c', 0, G_OPTION_ARG_INT,
  54           &option_connector, "KMS connector" },
  55         { "geometry", 'g', 0, G_OPTION_ARG_STRING,
  56           &option_geometry, "Geometry" },
  57         { "socket", 0, 0, G_OPTION_ARG_STRING,
  58           &option_socket_name, "Socket Name" },
  59         { "idle-time", 'i', 0, G_OPTION_ARG_INT,
  60           &option_idle_time, "Screensaver idle time" },
  61         { "shell", 's', 0, G_OPTION_ARG_STRING,
  62           &option_shell, "Shell module" },
  63         { NULL }
  64 };
  65
  66 static void
  67 wlsc_matrix_init(struct wlsc_matrix *matrix)
  68 {
  69         static const struct wlsc_matrix identity = {
  70                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  0, 0, 0, 1 }
  71         };
  72
  73         memcpy(matrix, &identity, sizeof identity);
  74 }
  75
  76 static void
  77 wlsc_matrix_multiply(struct wlsc_matrix *m, const struct wlsc_matrix *n)
  78 {
  79         struct wlsc_matrix tmp;
  80         const GLfloat *row, *column;
  81         div_t d;
  82         int i, j;
  83
  84         for (i = 0; i < 16; i++) {
  85                 tmp.d[i] = 0;
  86                 d = div(i, 4);
  87                 row = m->d + d.quot * 4;
  88                 column = n->d + d.rem;
  89                 for (j = 0; j < 4; j++)
  90                         tmp.d[i] += row[j] * column[j * 4];
  91         }
  92         memcpy(m, &tmp, sizeof tmp);
  93 }
  94
  95 static void
  96 wlsc_matrix_translate(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  97 {
  98         struct wlsc_matrix translate = {
  99                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  x, y, z, 1 }
 100         };
 101
 102         wlsc_matrix_multiply(matrix, &translate);
 103 }
 104
 105 static void
 106 wlsc_matrix_scale(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
 107 {
 108         struct wlsc_matrix scale = {
 109                 { x, 0, 0, 0,  0, y, 0, 0,  0, 0, z, 0,  0, 0, 0, 1 }
 110         };
 111
 112         wlsc_matrix_multiply(matrix, &scale);
 113 }
 114
 115 static void
 116 wlsc_matrix_transform(struct wlsc_matrix *matrix, struct wlsc_vector *v)
 117 {
 118         int i, j;
 119         struct wlsc_vector t;
 120
 121         for (i = 0; i < 4; i++) {
 122                 t.f[i] = 0;
 123                 for (j = 0; j < 4; j++)
 124                         t.f[i] += v->f[j] * matrix->d[i + j * 4];
 125         }
 126
 127         *v = t;
 128 }
 129
 130 WL_EXPORT void
 131 wlsc_tweener_init(struct wlsc_tweener *tweener,
 132                   double k, double current, double target)
 133 {
 134         tweener->k = k;
 135         tweener->current = current;
 136         tweener->previous = current;
 137         tweener->target = target;
 138 }
 139
 140 WL_EXPORT void
 141 wlsc_tweener_update(struct wlsc_tweener *tweener, uint32_t msec)
 142 {
 143         double force, current, step;
 144
 145         step = (msec - tweener->timestamp) / 100.0;
 146         tweener->timestamp = msec;
 147
 148         current = tweener->current;
 149         force = tweener->k * (tweener->target - current) / 10.0 +
 150                 (tweener->previous - current);
 151
 152         tweener->current =
 153                 current + (current - tweener->previous) + force * step * step;
 154         tweener->previous = current;
 155
 156         if (tweener->current >= 1.0) {
 157                 tweener->current = 1.0;
 158                 tweener->previous = 1.0;
 159         }
 160
 161         if (tweener->current <= 0.0) {
 162                 tweener->current = 0.0;
 163                 tweener->previous = 0.0;
 164         }
 165 }
 166
 167 WL_EXPORT int
 168 wlsc_tweener_done(struct wlsc_tweener *tweener)
 169 {
 170         return fabs(tweener->previous - tweener->target) < 0.0002 &&
 171                 fabs(tweener->current - tweener->target) < 0.0002;
 172 }
 173
 174 WL_EXPORT struct wlsc_surface *
 175 wlsc_surface_create(struct wlsc_compositor *compositor,
 176                     int32_t x, int32_t y, int32_t width, int32_t height)
 177 {
 178         struct wlsc_surface *surface;
 179
 180         surface = malloc(sizeof *surface);
 181         if (surface == NULL)
 182                 return NULL;
 183
 184         wl_list_init(&surface->surface.destroy_listener_list);
 185         wl_list_init(&surface->link);
 186         wl_list_init(&surface->buffer_link);
 187         surface->map_type = WLSC_SURFACE_MAP_UNMAPPED;
 188
 189         glGenTextures(1, &surface->texture);
 190         glBindTexture(GL_TEXTURE_2D, surface->texture);
 191         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 192         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 193         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 194         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 195
 196         surface->compositor = compositor;
 197         surface->visual = NULL;
 198         surface->image = EGL_NO_IMAGE_KHR;
 199         surface->saved_texture = 0;
 200         surface->buffer = NULL;
 201         surface->x = x;
 202         surface->y = y;
 203         surface->width = width;
 204         surface->height = height;
 205         wlsc_matrix_init(&surface->matrix);
 206         wlsc_matrix_scale(&surface->matrix, width, height, 1);
 207         wlsc_matrix_translate(&surface->matrix, x, y, 0);
 208
 209         wlsc_matrix_init(&surface->matrix_inv);
 210         wlsc_matrix_translate(&surface->matrix_inv, -x, -y, 0);
 211         wlsc_matrix_scale(&surface->matrix_inv, 1.0 / width, 1.0 / height, 1);
 212
 213         return surface;
 214 }
 215
 216 WL_EXPORT void
 217 wlsc_surface_damage_rectangle(struct wlsc_surface *surface,
 218                               int32_t x, int32_t y,
 219                               int32_t width, int32_t height)
 220 {
 221         struct wlsc_compositor *compositor = surface->compositor;
 222
 223         pixman_region32_union_rect(&compositor->damage_region,
 224                                    &compositor->damage_region,
 225                                    surface->x + x, surface->y + y,
 226                                    width, height);
 227         wlsc_compositor_schedule_repaint(compositor);
 228 }
 229
 230 WL_EXPORT void
 231 wlsc_surface_damage(struct wlsc_surface *surface)
 232 {
 233         wlsc_surface_damage_rectangle(surface, 0, 0,
 234                                       surface->width, surface->height);
 235 }
 236
 237 WL_EXPORT uint32_t
 238 wlsc_compositor_get_time(void)
 239 {
 240         struct timeval tv;
 241
 242         gettimeofday(&tv, NULL);
 243
 244         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 245 }
 246
 247 static void
 248 destroy_surface(struct wl_resource *resource, struct wl_client *client)
 249 {
 250         struct wlsc_surface *surface =
 251                 container_of(resource, struct wlsc_surface, surface.resource);
 252         struct wl_listener *l, *next;
 253         struct wlsc_compositor *compositor = surface->compositor;
 254         uint32_t time;
 255
 256         wlsc_surface_damage(surface);
 257
 258         wl_list_remove(&surface->link);
 259         if (surface->saved_texture == 0)
 260                 glDeleteTextures(1, &surface->texture);
 261         else
 262                 glDeleteTextures(1, &surface->saved_texture);
 263
 264
 265         if (surface->image != EGL_NO_IMAGE_KHR)
 266                 compositor->destroy_image(compositor->display,
 267                                           surface->image);
 268
 269         wl_list_remove(&surface->buffer_link);
 270
 271         time = wlsc_compositor_get_time();
 272         wl_list_for_each_safe(l, next,
 273                               &surface->surface.destroy_listener_list, link)
 274                 l->func(l, &surface->surface, time);
 275
 276         free(surface);
 277 }
 278
 279 uint32_t *
 280 wlsc_load_image(const char *filename, int width, int height)
 281 {
 282         GdkPixbuf *pixbuf;
 283         GError *error = NULL;
 284         int stride, i, n_channels;
 285         unsigned char *pixels, *end, *argb_pixels, *s, *d;
 286
 287         pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
 288                                                    width, height,
 289                                                    FALSE, &error);
 290         if (error != NULL) {
 291                 fprintf(stderr, "failed to load image: %s\n", error->message);
 292                 g_error_free(error);
 293                 return NULL;
 294         }
 295
 296         stride = gdk_pixbuf_get_rowstride(pixbuf);
 297         pixels = gdk_pixbuf_get_pixels(pixbuf);
 298         n_channels = gdk_pixbuf_get_n_channels(pixbuf);
 299
 300         argb_pixels = malloc (height * width * 4);
 301         if (argb_pixels == NULL) {
 302                 g_object_unref(pixbuf);
 303                 return NULL;
 304         }
 305
 306         if (n_channels == 4) {
 307                 for (i = 0; i < height; i++) {
 308                         s = pixels + i * stride;
 309                         end = s + width * 4;
 310                         d = argb_pixels + i * width * 4;
 311                         while (s < end) {
 312                                 unsigned int t;
 313
 314 #define MULT(_d,c,a,t) \
 315         do { t = c * a + 0x7f; _d = ((t >> 8) + t) >> 8; } while (0)
 316
 317                                 MULT(d[0], s[2], s[3], t);
 318                                 MULT(d[1], s[1], s[3], t);
 319                                 MULT(d[2], s[0], s[3], t);
 320                                 d[3] = s[3];
 321                                 s += 4;
 322                                 d += 4;
 323                         }
 324                 }
 325         } else if (n_channels == 3) {
 326                 for (i = 0; i < height; i++) {
 327                         s = pixels + i * stride;
 328                         end = s + width * 3;
 329                         d = argb_pixels + i * width * 4;
 330                         while (s < end) {
 331                                 d[0] = s[2];
 332                                 d[1] = s[1];
 333                                 d[2] = s[0];
 334                                 d[3] = 0xff;
 335                                 s += 3;
 336                                 d += 4;
 337                         }
 338                 }
 339         }
 340
 341         g_object_unref(pixbuf);
 342
 343         return (uint32_t *) argb_pixels;
 344 }
 345
 346 static void
 347 wlsc_buffer_attach(struct wl_buffer *buffer, struct wl_surface *surface)
 348 {
 349         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 350         struct wlsc_compositor *ec = es->compositor;
 351         struct wl_list *surfaces_attached_to;
 352
 353         if (es->saved_texture != 0)
 354                 es->texture = es->saved_texture;
 355
 356         glBindTexture(GL_TEXTURE_2D, es->texture);
 357
 358         if (wl_buffer_is_shm(buffer)) {
 359                 /* Unbind any EGLImage texture that may be bound, so we don't
 360                  * overwrite it.*/
 361                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 362                              0, 0, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, NULL);
 363                 es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
 364                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 365                              es->pitch, buffer->height, 0,
 366                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
 367                              wl_shm_buffer_get_data(buffer));
 368                 es->visual = buffer->visual;
 369
 370                 surfaces_attached_to = buffer->user_data;
 371
 372                 if (es->buffer)
 373                         wl_list_remove(&es->buffer_link);
 374                 wl_list_insert(surfaces_attached_to, &es->buffer_link);
 375         } else {
 376                 es->image = ec->create_image(ec->display, NULL,
 377                                              EGL_WAYLAND_BUFFER_WL,
 378                                              buffer, NULL);
 379
 380                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 381                 es->visual = buffer->visual;
 382                 es->pitch = es->width;
 383         }
 384 }
 385
 386 static void
 387 wlsc_sprite_attach(struct wlsc_sprite *sprite, struct wl_surface *surface)
 388 {
 389         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 390         struct wlsc_compositor *ec = es->compositor;
 391
 392         es->pitch = es->width;
 393         es->image = sprite->image;
 394         if (sprite->image != EGL_NO_IMAGE_KHR) {
 395                 glBindTexture(GL_TEXTURE_2D, es->texture);
 396                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 397         } else {
 398                 if (es->saved_texture == 0)
 399                         es->saved_texture = es->texture;
 400                 es->texture = sprite->texture;
 401         }
 402
 403         es->visual = sprite->visual;
 404 }
 405
 406 enum sprite_usage {
 407         SPRITE_USE_CURSOR = (1 << 0),
 408 };
 409
 410 static struct wlsc_sprite *
 411 create_sprite_from_png(struct wlsc_compositor *ec,
 412                        const char *filename, int width, int height,
 413                        uint32_t usage)
 414 {
 415         uint32_t *pixels;
 416         struct wlsc_sprite *sprite;
 417
 418         pixels = wlsc_load_image(filename, width, height);
 419         if(pixels == NULL)
 420                 return NULL;
 421
 422         sprite = malloc(sizeof *sprite);
 423         if (sprite == NULL) {
 424                 free(pixels);
 425                 return NULL;
 426         }
 427
 428         sprite->visual = &ec->compositor.premultiplied_argb_visual;
 429         sprite->width = width;
 430         sprite->height = height;
 431         sprite->image = EGL_NO_IMAGE_KHR;
 432
 433         if (usage & SPRITE_USE_CURSOR && ec->create_cursor_image != NULL)
 434                 sprite->image = ec->create_cursor_image(ec, width, height);
 435
 436         glGenTextures(1, &sprite->texture);
 437         glBindTexture(GL_TEXTURE_2D, sprite->texture);
 438         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 439         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 440         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 441         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 442
 443         if (sprite->image != EGL_NO_IMAGE_KHR) {
 444                 ec->image_target_texture_2d(GL_TEXTURE_2D, sprite->image);
 445                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,
 446                                 GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 447         } else {
 448                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT, width, height, 0,
 449                              GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 450         }
 451
 452         free(pixels);
 453
 454         return sprite;
 455 }
 456
 457 static const struct {
 458         const char *filename;
 459         int hotspot_x, hotspot_y;
 460 } pointer_images[] = {
 461         { DATADIR "/wayland/bottom_left_corner.png",     6, 30 },
 462         { DATADIR "/wayland/bottom_right_corner.png",   28, 28 },
 463         { DATADIR "/wayland/bottom_side.png",           16, 20 },
 464         { DATADIR "/wayland/grabbing.png",              20, 17 },
 465         { DATADIR "/wayland/left_ptr.png",              10,  5 },
 466         { DATADIR "/wayland/left_side.png",             10, 20 },
 467         { DATADIR "/wayland/right_side.png",            30, 19 },
 468         { DATADIR "/wayland/top_left_corner.png",        8,  8 },
 469         { DATADIR "/wayland/top_right_corner.png",      26,  8 },
 470         { DATADIR "/wayland/top_side.png",              18,  8 },
 471         { DATADIR "/wayland/xterm.png",                 15, 15 }
 472 };
 473
 474 static void
 475 create_pointer_images(struct wlsc_compositor *ec)
 476 {
 477         int i, count;
 478         const int width = 32, height = 32;
 479
 480         count = ARRAY_LENGTH(pointer_images);
 481         ec->pointer_sprites = malloc(count * sizeof *ec->pointer_sprites);
 482         for (i = 0; i < count; i++) {
 483                 ec->pointer_sprites[i] =
 484                         create_sprite_from_png(ec,
 485                                                pointer_images[i].filename,
 486                                                width, height,
 487                                                SPRITE_USE_CURSOR);
 488         }
 489 }
 490
 491 static struct wlsc_surface *
 492 background_create(struct wlsc_output *output, const char *filename)
 493 {
 494         struct wlsc_surface *background;
 495         struct wlsc_sprite *sprite;
 496
 497         background = wlsc_surface_create(output->compositor,
 498                                          output->x, output->y,
 499                                          output->width, output->height);
 500         if (background == NULL)
 501                 return NULL;
 502
 503         sprite = create_sprite_from_png(output->compositor, filename,
 504                                         output->width, output->height, 0);
 505         if (sprite == NULL) {
 506                 free(background);
 507                 return NULL;
 508         }
 509
 510         wlsc_sprite_attach(sprite, &background->surface);
 511
 512         return background;
 513 }
 514
 515 static void
 516 wlsc_surface_draw(struct wlsc_surface *es,
 517                   struct wlsc_output *output, pixman_region32_t *clip)
 518 {
 519         struct wlsc_compositor *ec = es->compositor;
 520         GLfloat *v, inv_width, inv_height;
 521         unsigned int *p;
 522         pixman_region32_t repaint;
 523         pixman_box32_t *rectangles;
 524         int i, n;
 525
 526         pixman_region32_init_rect(&repaint,
 527                                   es->x, es->y, es->width, es->height);
 528         pixman_region32_intersect(&repaint, &repaint, clip);
 529         if (!pixman_region32_not_empty(&repaint))
 530                 return;
 531
 532         if (es->visual == &ec->compositor.argb_visual) {
 533                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 534                 glEnable(GL_BLEND);
 535         } else if (es->visual == &ec->compositor.premultiplied_argb_visual) {
 536                 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 537                 glEnable(GL_BLEND);
 538         } else {
 539                 glDisable(GL_BLEND);
 540         }
 541
 542         rectangles = pixman_region32_rectangles(&repaint, &n);
 543         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 544         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 545         inv_width = 1.0 / es->pitch;
 546         inv_height = 1.0 / es->height;
 547         for (i = 0; i < n; i++, v += 16, p += 6) {
 548                 v[ 0] = rectangles[i].x1;
 549                 v[ 1] = rectangles[i].y1;
 550                 v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
 551                 v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
 552
 553                 v[ 4] = rectangles[i].x1;
 554                 v[ 5] = rectangles[i].y2;
 555                 v[ 6] = v[ 2];
 556                 v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
 557
 558                 v[ 8] = rectangles[i].x2;
 559                 v[ 9] = rectangles[i].y1;
 560                 v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
 561                 v[11] = v[ 3];
 562
 563                 v[12] = rectangles[i].x2;
 564                 v[13] = rectangles[i].y2;
 565                 v[14] = v[10];
 566                 v[15] = v[ 7];
 567
 568                 p[0] = i * 4 + 0;
 569                 p[1] = i * 4 + 1;
 570                 p[2] = i * 4 + 2;
 571                 p[3] = i * 4 + 2;
 572                 p[4] = i * 4 + 1;
 573                 p[5] = i * 4 + 3;
 574         }
 575
 576         glBindTexture(GL_TEXTURE_2D, es->texture);
 577         v = ec->vertices.data;
 578         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 579         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 580         glEnableVertexAttribArray(0);
 581         glEnableVertexAttribArray(1);
 582         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 583
 584         ec->vertices.size = 0;
 585         ec->indices.size = 0;
 586         pixman_region32_fini(&repaint);
 587 }
 588
 589 static void
 590 wlsc_surface_raise(struct wlsc_surface *surface)
 591 {
 592         struct wlsc_compositor *compositor = surface->compositor;
 593
 594         wl_list_remove(&surface->link);
 595         wl_list_insert(&compositor->surface_list, &surface->link);
 596 }
 597
 598 WL_EXPORT void
 599 wlsc_surface_update_matrix(struct wlsc_surface *es)
 600 {
 601         wlsc_matrix_init(&es->matrix);
 602         wlsc_matrix_scale(&es->matrix, es->width, es->height, 1);
 603         wlsc_matrix_translate(&es->matrix, es->x, es->y, 0);
 604
 605         wlsc_matrix_init(&es->matrix_inv);
 606         wlsc_matrix_translate(&es->matrix_inv, -es->x, -es->y, 0);
 607         wlsc_matrix_scale(&es->matrix_inv,
 608                           1.0 / es->width, 1.0 / es->height, 1);
 609 }
 610
 611 WL_EXPORT void
 612 wlsc_compositor_damage_all(struct wlsc_compositor *compositor)
 613 {
 614         struct wlsc_output *output;
 615
 616         wl_list_for_each(output, &compositor->output_list, link)
 617                 wlsc_output_damage(output);
 618 }
 619
 620 WL_EXPORT void
 621 wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
 622 {
 623         struct wlsc_compositor *compositor = output->compositor;
 624         struct wlsc_surface *es;
 625         struct wlsc_animation *animation, *next;
 626
 627         wl_list_for_each(es, &compositor->surface_list, link) {
 628                 if (es->output == output) {
 629                         wl_display_post_frame(compositor->wl_display,
 630                                               &es->surface, msecs);
 631                 }
 632         }
 633
 634         output->finished = 1;
 635
 636         wl_event_source_timer_update(compositor->timer_source, 5);
 637         compositor->repaint_on_timeout = 1;
 638
 639         wl_list_for_each_safe(animation, next,
 640                               &compositor->animation_list, link)
 641                 animation->frame(animation, output, msecs);
 642 }
 643
 644 WL_EXPORT void
 645 wlsc_output_damage(struct wlsc_output *output)
 646 {
 647         struct wlsc_compositor *compositor = output->compositor;
 648
 649         pixman_region32_union_rect(&compositor->damage_region,
 650                                    &compositor->damage_region,
 651                                    output->x, output->y,
 652                                    output->width, output->height);
 653         wlsc_compositor_schedule_repaint(compositor);
 654 }
 655
 656 static void
 657 fade_frame(struct wlsc_animation *animation,
 658            struct wlsc_output *output, uint32_t msecs)
 659 {
 660         struct wlsc_compositor *compositor =
 661                 container_of(animation,
 662                              struct wlsc_compositor, fade.animation);
 663
 664         wlsc_tweener_update(&compositor->fade.tweener, msecs);
 665         if (wlsc_tweener_done(&compositor->fade.tweener)) {
 666                 if (compositor->fade.tweener.current > 0.999) {
 667                         compositor->state = WLSC_COMPOSITOR_SLEEPING;
 668                         compositor->shell->lock(compositor->shell);
 669                 }
 670                 compositor->fade.tweener.current =
 671                         compositor->fade.tweener.target;
 672                 wl_list_remove(&animation->link);
 673                 wl_list_init(&animation->link);
 674         }
 675
 676         wlsc_output_damage(output);
 677 }
 678
 679 static void
 680 fade_output(struct wlsc_output *output,
 681             GLfloat tint, pixman_region32_t *region)
 682 {
 683         struct wlsc_compositor *compositor = output->compositor;
 684         struct wlsc_surface surface;
 685         GLfloat color[4] = { 0.0, 0.0, 0.0, tint };
 686
 687         surface.compositor = compositor;
 688         surface.x = output->x;
 689         surface.y = output->y;
 690         surface.width = output->width;
 691         surface.height = output->height;
 692         surface.texture = GL_NONE;
 693
 694         if (tint <= 1.0)
 695                 surface.visual =
 696                         &compositor->compositor.premultiplied_argb_visual;
 697         else
 698                 surface.visual = &compositor->compositor.rgb_visual;
 699
 700         glUseProgram(compositor->solid_shader.program);
 701         glUniformMatrix4fv(compositor->solid_shader.proj_uniform,
 702                            1, GL_FALSE, output->matrix.d);
 703         glUniform4fv(compositor->solid_shader.color_uniform, 1, color);
 704         wlsc_surface_draw(&surface, output, region);
 705 }
 706
 707 static void
 708 wlsc_output_repaint(struct wlsc_output *output)
 709 {
 710         struct wlsc_compositor *ec = output->compositor;
 711         struct wlsc_surface *es;
 712         struct wlsc_input_device *eid;
 713         pixman_region32_t new_damage, total_damage, repaint;
 714         int using_hardware_cursor = 1;
 715
 716         output->prepare_render(output);
 717
 718         glViewport(0, 0, output->width, output->height);
 719
 720         glUseProgram(ec->texture_shader.program);
 721         glUniformMatrix4fv(ec->texture_shader.proj_uniform,
 722                            1, GL_FALSE, output->matrix.d);
 723         glUniform1i(ec->texture_shader.tex_uniform, 0);
 724
 725         pixman_region32_init(&new_damage);
 726         pixman_region32_init(&total_damage);
 727         pixman_region32_intersect_rect(&new_damage,
 728                                        &ec->damage_region,
 729                                        output->x, output->y,
 730                                        output->width, output->height);
 731         pixman_region32_subtract(&ec->damage_region,
 732                                  &ec->damage_region, &new_damage);
 733         pixman_region32_union(&total_damage, &new_damage,
 734                               &output->previous_damage_region);
 735         pixman_region32_copy(&output->previous_damage_region, &new_damage);
 736
 737         if (ec->focus)
 738                 if (output->set_hardware_cursor(output, ec->input_device) < 0)
 739                         using_hardware_cursor = 0;
 740         if (ec->fade.tweener.current > 0.001)
 741                 using_hardware_cursor = 0;
 742
 743         es = container_of(ec->surface_list.next, struct wlsc_surface, link);
 744         if (es->fullscreen_output == output) {
 745                 if (es->visual == &ec->compositor.rgb_visual &&
 746                     using_hardware_cursor) {
 747                         if (output->prepare_scanout_surface(output, es) == 0) {
 748                                 /* We're drawing nothing now,
 749                                  * draw the damaged regions later. */
 750                                 pixman_region32_union(&ec->damage_region,
 751                                                       &ec->damage_region,
 752                                                       &total_damage);
 753                                 return;
 754                         }
 755                 }
 756
 757                 if (es->width < output->width ||
 758                     es->height < output->height)
 759                         glClear(GL_COLOR_BUFFER_BIT);
 760                 wlsc_surface_draw(es, output, &total_damage);
 761         } else {
 762                 wl_list_for_each(es, &ec->surface_list, link) {
 763                         if (es->visual != &ec->compositor.rgb_visual)
 764                                 continue;
 765
 766                         pixman_region32_init_rect(&repaint,
 767                                                   es->x, es->y,
 768                                                   es->width, es->height);
 769                         wlsc_surface_draw(es, output, &total_damage);
 770                         pixman_region32_subtract(&total_damage,
 771                                                  &total_damage, &repaint);
 772                 }
 773
 774                 if (output->background)
 775                         wlsc_surface_draw(output->background,
 776                                           output, &total_damage);
 777                 else
 778                         fade_output(output, 1.0, &total_damage);
 779
 780                 glUseProgram(ec->texture_shader.program);
 781                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 782                         if (ec->overlay == es)
 783                                 continue;
 784
 785                         if (es->visual == &ec->compositor.rgb_visual) {
 786                                 pixman_region32_union_rect(&total_damage,
 787                                                            &total_damage,
 788                                                            es->x, es->y,
 789                                                            es->width, es->height);
 790                                 continue;
 791                         }
 792
 793                         wlsc_surface_draw(es, output, &total_damage);
 794                 }
 795         }
 796
 797         if (ec->overlay)
 798                 wlsc_surface_draw(ec->overlay, output, &total_damage);
 799
 800         if (ec->focus)
 801                 wl_list_for_each(eid, &ec->input_device_list, link) {
 802                         if (&eid->input_device != ec->input_device ||
 803                             !using_hardware_cursor)
 804                                 wlsc_surface_draw(eid->sprite, output,
 805                                                   &total_damage);
 806                 }
 807
 808         if (ec->fade.tweener.current > 0.001)
 809                 fade_output(output, ec->fade.tweener.current, &total_damage);
 810 }
 811
 812 static int
 813 repaint(void *data)
 814 {
 815         struct wlsc_compositor *ec = data;
 816         struct wlsc_output *output;
 817         int repainted_all_outputs = 1;
 818
 819         wl_list_for_each(output, &ec->output_list, link) {
 820                 if (!output->repaint_needed)
 821                         continue;
 822
 823                 if (!output->finished) {
 824                         repainted_all_outputs = 0;
 825                         continue;
 826                 }
 827
 828                 wlsc_output_repaint(output);
 829                 output->finished = 0;
 830                 output->repaint_needed = 0;
 831                 output->present(output);
 832         }
 833
 834         if (repainted_all_outputs)
 835                 ec->repaint_on_timeout = 0;
 836         else
 837                 wl_event_source_timer_update(ec->timer_source, 1);
 838
 839         return 1;
 840 }
 841
 842 WL_EXPORT void
 843 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 844 {
 845         struct wlsc_output *output;
 846
 847         if (compositor->state == WLSC_COMPOSITOR_SLEEPING)
 848                 return;
 849
 850         wl_list_for_each(output, &compositor->output_list, link)
 851                 output->repaint_needed = 1;
 852
 853         if (compositor->repaint_on_timeout)
 854                 return;
 855
 856         wl_event_source_timer_update(compositor->timer_source, 1);
 857         compositor->repaint_on_timeout = 1;
 858 }
 859
 860 WL_EXPORT void
 861 wlsc_compositor_fade(struct wlsc_compositor *compositor, float tint)
 862 {
 863         int done;
 864
 865         done = wlsc_tweener_done(&compositor->fade.tweener);
 866         compositor->fade.tweener.target = tint;
 867         if (wlsc_tweener_done(&compositor->fade.tweener))
 868                 return;
 869
 870         if (done)
 871                 compositor->fade.tweener.timestamp =
 872                         wlsc_compositor_get_time();
 873
 874         wlsc_compositor_damage_all(compositor);
 875         if (wl_list_empty(&compositor->fade.animation.link))
 876                 wl_list_insert(compositor->animation_list.prev,
 877                                &compositor->fade.animation.link);
 878 }
 879
 880 static void
 881 surface_destroy(struct wl_client *client,
 882                 struct wl_surface *surface)
 883 {
 884         wl_resource_destroy(&surface->resource, client);
 885 }
 886
 887 WL_EXPORT void
 888 wlsc_surface_assign_output(struct wlsc_surface *es)
 889 {
 890         struct wlsc_compositor *ec = es->compositor;
 891         struct wlsc_output *output;
 892
 893         struct wlsc_output *tmp = es->output;
 894         es->output = NULL;
 895
 896         wl_list_for_each(output, &ec->output_list, link) {
 897                 if (output->x < es->x && es->x < output->x + output->width &&
 898                     output->y < es->y && es->y < output->y + output->height) {
 899                         if (output != tmp)
 900                                 printf("assiging surface %p to output %p\n",
 901                                        es, output);
 902                         es->output = output;
 903                 }
 904         }
 905
 906         if (es->output == NULL) {
 907                 printf("no output found\n");
 908                 es->output = container_of(ec->output_list.next,
 909                                           struct wlsc_output, link);
 910         }
 911 }
 912
 913 static void
 914 surface_attach(struct wl_client *client,
 915                struct wl_surface *surface, struct wl_buffer *buffer,
 916                int32_t x, int32_t y)
 917 {
 918         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 919
 920         /* FIXME: This damages the entire old surface, but we should
 921          * really just damage the part that's no longer covered by the
 922          * surface.  Anything covered by the new surface will be
 923          * damaged by the client. */
 924         wlsc_surface_damage(es);
 925
 926         wlsc_buffer_attach(buffer, surface);
 927
 928         es->buffer = buffer;
 929         switch (es->map_type) {
 930         case WLSC_SURFACE_MAP_FULLSCREEN:
 931                 es->x = (es->fullscreen_output->width - es->width) / 2;
 932                 es->y = (es->fullscreen_output->height - es->height) / 2;
 933                 break;
 934         default:
 935                 es->x += x;
 936                 es->y += y;
 937                 break;
 938         }
 939         es->width = buffer->width;
 940         es->height = buffer->height;
 941         if (x != 0 || y != 0)
 942                 wlsc_surface_assign_output(es);
 943         wlsc_surface_update_matrix(es);
 944
 945         es->compositor->shell->attach(es->compositor->shell, es);
 946 }
 947
 948 static void
 949 surface_map_toplevel(struct wl_client *client,
 950                      struct wl_surface *surface)
 951 {
 952         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 953         struct wlsc_compositor *ec = es->compositor;
 954
 955         switch (es->map_type) {
 956         case WLSC_SURFACE_MAP_UNMAPPED:
 957                 es->x = 10 + random() % 400;
 958                 es->y = 10 + random() % 400;
 959                 wlsc_surface_update_matrix(es);
 960                 /* assign to first output */
 961                 es->output = container_of(ec->output_list.next,
 962                                           struct wlsc_output, link);
 963                 wl_list_insert(&es->compositor->surface_list, &es->link);
 964                 break;
 965         case WLSC_SURFACE_MAP_TOPLEVEL:
 966                 return;
 967         case WLSC_SURFACE_MAP_FULLSCREEN:
 968                 es->fullscreen_output = NULL;
 969                 es->x = es->saved_x;
 970                 es->y = es->saved_y;
 971                 wlsc_surface_update_matrix(es);
 972                 break;
 973         default:
 974                 break;
 975         }
 976
 977         wlsc_surface_damage(es);
 978         es->map_type = WLSC_SURFACE_MAP_TOPLEVEL;
 979 }
 980
 981 static void
 982 surface_map_transient(struct wl_client *client,
 983                       struct wl_surface *surface, struct wl_surface *parent,
 984                       int x, int y, uint32_t flags)
 985 {
 986         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 987         struct wlsc_surface *pes = (struct wlsc_surface *) parent;
 988
 989         switch (es->map_type) {
 990         case WLSC_SURFACE_MAP_UNMAPPED:
 991                 wl_list_insert(&es->compositor->surface_list, &es->link);
 992                 /* assign to parents output  */
 993                 es->output = pes->output;
 994                 break;
 995         case WLSC_SURFACE_MAP_FULLSCREEN:
 996                 es->fullscreen_output = NULL;
 997                 break;
 998         default:
 999                 break;
1000         }
1001
1002         es->x = pes->x + x;
1003         es->y = pes->y + y;
1004
1005         wlsc_surface_update_matrix(es);
1006         wlsc_surface_damage(es);
1007         es->map_type = WLSC_SURFACE_MAP_TRANSIENT;
1008 }
1009
1010 static void
1011 surface_map_fullscreen(struct wl_client *client, struct wl_surface *surface)
1012 {
1013         struct wlsc_surface *es = (struct wlsc_surface *) surface;
1014         struct wlsc_output *output;
1015
1016         /* FIXME: Fullscreen on first output */
1017         /* FIXME: Handle output going away */
1018         output = container_of(es->compositor->output_list.next,
1019                               struct wlsc_output, link);
1020
1021         switch (es->map_type) {
1022         case WLSC_SURFACE_MAP_UNMAPPED:
1023                 es->x = 10 + random() % 400;
1024                 es->y = 10 + random() % 400;
1025                 /* assign to first output */
1026                 es->output = output;
1027                 wl_list_insert(&es->compositor->surface_list, &es->link);
1028                 break;
1029         case WLSC_SURFACE_MAP_FULLSCREEN:
1030                 return;
1031         default:
1032                 break;
1033         }
1034
1035         es->saved_x = es->x;
1036         es->saved_y = es->y;
1037         es->x = (output->width - es->width) / 2;
1038         es->y = (output->height - es->height) / 2;
1039         es->fullscreen_output = output;
1040         wlsc_surface_update_matrix(es);
1041         wlsc_surface_damage(es);
1042         es->map_type = WLSC_SURFACE_MAP_FULLSCREEN;
1043 }
1044
1045 static void
1046 surface_damage(struct wl_client *client,
1047                struct wl_surface *surface,
1048                int32_t x, int32_t y, int32_t width, int32_t height)
1049 {
1050         struct wlsc_surface *es = (struct wlsc_surface *) surface;
1051
1052         wlsc_surface_damage_rectangle(es, x, y, width, height);
1053 }
1054
1055 const static struct wl_surface_interface surface_interface = {
1056         surface_destroy,
1057         surface_attach,
1058         surface_map_toplevel,
1059         surface_map_transient,
1060         surface_map_fullscreen,
1061         surface_damage
1062 };
1063
1064 static void
1065 wlsc_input_device_attach(struct wlsc_input_device *device,
1066                          int x, int y, int width, int height)
1067 {
1068         wlsc_surface_damage(device->sprite);
1069
1070         device->hotspot_x = x;
1071         device->hotspot_y = y;
1072
1073         device->sprite->x = device->input_device.x - device->hotspot_x;
1074         device->sprite->y = device->input_device.y - device->hotspot_y;
1075         device->sprite->width = width;
1076         device->sprite->height = height;
1077         wlsc_surface_update_matrix(device->sprite);
1078
1079         wlsc_surface_damage(device->sprite);
1080 }
1081
1082 static void
1083 wlsc_input_device_attach_buffer(struct wlsc_input_device *device,
1084                                 struct wl_buffer *buffer, int x, int y)
1085 {
1086         wlsc_buffer_attach(buffer, &device->sprite->surface);
1087         wlsc_input_device_attach(device, x, y, buffer->width, buffer->height);
1088 }
1089
1090 static void
1091 wlsc_input_device_attach_sprite(struct wlsc_input_device *device,
1092                                 struct wlsc_sprite *sprite, int x, int y)
1093 {
1094         wlsc_sprite_attach(sprite, &device->sprite->surface);
1095         wlsc_input_device_attach(device, x, y, sprite->width, sprite->height);
1096 }
1097
1098 void
1099 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
1100                                     enum wlsc_pointer_type type)
1101 {
1102         struct wlsc_compositor *compositor =
1103                 (struct wlsc_compositor *) device->input_device.compositor;
1104
1105         wlsc_input_device_attach_sprite(device,
1106                                         compositor->pointer_sprites[type],
1107                                         pointer_images[type].hotspot_x,
1108                                         pointer_images[type].hotspot_y);
1109 }
1110
1111 static void
1112 compositor_create_surface(struct wl_client *client,
1113                           struct wl_compositor *compositor, uint32_t id)
1114 {
1115         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
1116         struct wlsc_surface *surface;
1117
1118         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
1119         if (surface == NULL) {
1120                 wl_client_post_no_memory(client);
1121                 return;
1122         }
1123
1124         surface->surface.resource.destroy = destroy_surface;
1125
1126         surface->surface.resource.object.id = id;
1127         surface->surface.resource.object.interface = &wl_surface_interface;
1128         surface->surface.resource.object.implementation =
1129                 (void (**)(void)) &surface_interface;
1130         surface->surface.client = client;
1131
1132         wl_client_add_resource(client, &surface->surface.resource);
1133 }
1134
1135 const static struct wl_compositor_interface compositor_interface = {
1136         compositor_create_surface,
1137 };
1138
1139 static void
1140 wlsc_surface_transform(struct wlsc_surface *surface,
1141                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
1142 {
1143         struct wlsc_vector v = { { x, y, 0, 1 } };
1144
1145         wlsc_matrix_transform(&surface->matrix_inv, &v);
1146         *sx = v.f[0] * surface->width;
1147         *sy = v.f[1] * surface->height;
1148 }
1149
1150 struct wlsc_surface *
1151 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
1152 {
1153         struct wlsc_compositor *ec =
1154                 (struct wlsc_compositor *) device->compositor;
1155         struct wlsc_surface *es;
1156
1157         wl_list_for_each(es, &ec->surface_list, link) {
1158                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
1159                 if (0 <= *sx && *sx < es->width &&
1160                     0 <= *sy && *sy < es->height)
1161                         return es;
1162         }
1163
1164         return NULL;
1165 }
1166
1167
1168 static void
1169 motion_grab_motion(struct wl_grab *grab,
1170                    uint32_t time, int32_t x, int32_t y)
1171 {
1172         struct wlsc_input_device *device =
1173                 (struct wlsc_input_device *) grab->input_device;
1174         struct wlsc_surface *es =
1175                 (struct wlsc_surface *) device->input_device.pointer_focus;
1176         int32_t sx, sy;
1177
1178         wlsc_surface_transform(es, x, y, &sx, &sy);
1179         wl_client_post_event(es->surface.client,
1180                              &device->input_device.object,
1181                              WL_INPUT_DEVICE_MOTION,
1182                              time, x, y, sx, sy);
1183 }
1184
1185 static void
1186 motion_grab_button(struct wl_grab *grab,
1187                    uint32_t time, int32_t button, int32_t state)
1188 {
1189         wl_client_post_event(grab->input_device->pointer_focus->client,
1190                              &grab->input_device->object,
1191                              WL_INPUT_DEVICE_BUTTON,
1192                              time, button, state);
1193 }
1194
1195 static void
1196 motion_grab_end(struct wl_grab *grab, uint32_t time)
1197 {
1198 }
1199
1200 static const struct wl_grab_interface motion_grab_interface = {
1201         motion_grab_motion,
1202         motion_grab_button,
1203         motion_grab_end
1204 };
1205
1206 WL_EXPORT void
1207 wlsc_compositor_wake(struct wlsc_compositor *compositor)
1208 {
1209         if (compositor->idle_inhibit)
1210                 return;
1211
1212         wlsc_compositor_fade(compositor, 0.0);
1213         compositor->state = WLSC_COMPOSITOR_ACTIVE;
1214
1215         wl_event_source_timer_update(compositor->idle_source,
1216                                      option_idle_time * 1000);
1217 }
1218
1219 static void
1220 wlsc_compositor_idle_inhibit(struct wlsc_compositor *compositor)
1221 {
1222         wlsc_compositor_wake(compositor);
1223         compositor->idle_inhibit++;
1224 }
1225
1226 static void
1227 wlsc_compositor_idle_release(struct wlsc_compositor *compositor)
1228 {
1229         compositor->idle_inhibit--;
1230         wlsc_compositor_wake(compositor);
1231 }
1232
1233 static int
1234 idle_handler(void *data)
1235 {
1236         struct wlsc_compositor *compositor = data;
1237
1238         if (compositor->idle_inhibit)
1239                 return 1;
1240
1241         wlsc_compositor_fade(compositor, 1.0);
1242
1243         return 1;
1244 }
1245
1246 void
1247 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1248 {
1249         struct wlsc_surface *es;
1250         struct wlsc_compositor *ec =
1251                 (struct wlsc_compositor *) device->compositor;
1252         struct wlsc_output *output;
1253         const struct wl_grab_interface *interface;
1254         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1255         int32_t sx, sy;
1256         int x_valid = 0, y_valid = 0;
1257         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1258
1259         wlsc_compositor_wake(ec);
1260
1261         wl_list_for_each(output, &ec->output_list, link) {
1262                 if (output->x <= x && x <= output->x + output->width)
1263                         x_valid = 1;
1264
1265                 if (output->y <= y && y <= output->y + output->height)
1266                         y_valid = 1;
1267
1268                 /* FIXME: calculate this only on output addition/deletion */
1269                 if (output->x < min_x)
1270                         min_x = output->x;
1271                 if (output->y < min_y)
1272                         min_y = output->y;
1273
1274                 if (output->x + output->width > max_x)
1275                         max_x = output->x + output->width;
1276                 if (output->y + output->height > max_y)
1277                         max_y = output->y + output->height;
1278         }
1279
1280         if (!x_valid) {
1281                 if (x < min_x)
1282                         x = min_x;
1283                 else if (x >= max_x)
1284                         x = max_x;
1285         }
1286         if (!y_valid) {
1287                 if (y < min_y)
1288                         y = min_y;
1289                 else  if (y >= max_y)
1290                         y = max_y;
1291         }
1292
1293         device->x = x;
1294         device->y = y;
1295
1296         if (device->grab) {
1297                 interface = device->grab->interface;
1298                 interface->motion(device->grab, time, x, y);
1299         } else {
1300                 es = pick_surface(device, &sx, &sy);
1301                 wl_input_device_set_pointer_focus(device,
1302                                                   &es->surface,
1303                                                   time, x, y, sx, sy);
1304                 if (es)
1305                         wl_client_post_event(es->surface.client,
1306                                              &device->object,
1307                                              WL_INPUT_DEVICE_MOTION,
1308                                              time, x, y, sx, sy);
1309         }
1310
1311         wlsc_surface_damage(wd->sprite);
1312
1313         wd->sprite->x = device->x - wd->hotspot_x;
1314         wd->sprite->y = device->y - wd->hotspot_y;
1315         wlsc_surface_update_matrix(wd->sprite);
1316
1317         wlsc_surface_damage(wd->sprite);
1318 }
1319
1320 WL_EXPORT void
1321 wlsc_surface_activate(struct wlsc_surface *surface,
1322                       struct wlsc_input_device *device, uint32_t time)
1323 {
1324         wlsc_surface_raise(surface);
1325         if (device->selection)
1326                 wlsc_selection_set_focus(device->selection,
1327                                          &surface->surface, time);
1328
1329         wl_input_device_set_keyboard_focus(&device->input_device,
1330                                            &surface->surface,
1331                                            time);
1332 }
1333
1334 struct wlsc_binding {
1335         uint32_t key;
1336         uint32_t button;
1337         uint32_t modifier;
1338         wlsc_binding_handler_t handler;
1339         void *data;
1340         struct wl_list link;
1341 };
1342
1343 void
1344 notify_button(struct wl_input_device *device,
1345               uint32_t time, int32_t button, int32_t state)
1346 {
1347         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1348         struct wlsc_compositor *compositor =
1349                 (struct wlsc_compositor *) device->compositor;
1350         struct wlsc_binding *b;
1351         struct wlsc_surface *surface =
1352                 (struct wlsc_surface *) device->pointer_focus;
1353
1354         if (state)
1355                 wlsc_compositor_idle_inhibit(compositor);
1356         else
1357                 wlsc_compositor_idle_release(compositor);
1358
1359         if (state && surface && device->grab == NULL) {
1360                 wlsc_surface_activate(surface, wd, time);
1361                 wl_input_device_start_grab(device,
1362                                            &device->motion_grab,
1363                                            button, time);
1364         }
1365
1366         wl_list_for_each(b, &compositor->binding_list, link) {
1367                 if (b->button == button &&
1368                     b->modifier == wd->modifier_state && state) {
1369                         b->handler(&wd->input_device,
1370                                    time, 0, button, state, b->data);
1371                         break;
1372                 }
1373         }
1374
1375         if (device->grab)
1376                 device->grab->interface->button(device->grab, time,
1377                                                 button, state);
1378
1379         if (!state && device->grab && device->grab_button == button)
1380                 wl_input_device_end_grab(device, time);
1381 }
1382
1383 static void
1384 terminate_binding(struct wl_input_device *device, uint32_t time,
1385                   uint32_t key, uint32_t button, uint32_t state, void *data)
1386 {
1387         struct wlsc_compositor *compositor = data;
1388
1389         if (state)
1390                 wl_display_terminate(compositor->wl_display);
1391 }
1392
1393 WL_EXPORT struct wlsc_binding *
1394 wlsc_compositor_add_binding(struct wlsc_compositor *compositor,
1395                             uint32_t key, uint32_t button, uint32_t modifier,
1396                             wlsc_binding_handler_t handler, void *data)
1397 {
1398         struct wlsc_binding *binding;
1399
1400         binding = malloc(sizeof *binding);
1401         if (binding == NULL)
1402                 return NULL;
1403
1404         binding->key = key;
1405         binding->button = button;
1406         binding->modifier = modifier;
1407         binding->handler = handler;
1408         binding->data = data;
1409         wl_list_insert(compositor->binding_list.prev, &binding->link);
1410
1411         return binding;
1412 }
1413
1414 WL_EXPORT void
1415 wlsc_binding_destroy(struct wlsc_binding *binding)
1416 {
1417         wl_list_remove(&binding->link);
1418         free(binding);
1419 }
1420
1421 static void
1422 update_modifier_state(struct wlsc_input_device *device,
1423                       uint32_t key, uint32_t state)
1424 {
1425         uint32_t modifier;
1426
1427         switch (key) {
1428         case KEY_LEFTCTRL:
1429         case KEY_RIGHTCTRL:
1430                 modifier = MODIFIER_CTRL;
1431                 break;
1432
1433         case KEY_LEFTALT:
1434         case KEY_RIGHTALT:
1435                 modifier = MODIFIER_ALT;
1436                 break;
1437
1438         case KEY_LEFTMETA:
1439         case KEY_RIGHTMETA:
1440                 modifier = MODIFIER_SUPER;
1441                 break;
1442
1443         default:
1444                 modifier = 0;
1445                 break;
1446         }
1447
1448         if (state)
1449                 device->modifier_state |= modifier;
1450         else
1451                 device->modifier_state &= ~modifier;
1452 }
1453
1454 void
1455 notify_key(struct wl_input_device *device,
1456            uint32_t time, uint32_t key, uint32_t state)
1457 {
1458         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1459         struct wlsc_compositor *compositor =
1460                 (struct wlsc_compositor *) device->compositor;
1461         uint32_t *k, *end;
1462         struct wlsc_binding *b;
1463
1464         if (state)
1465                 wlsc_compositor_idle_inhibit(compositor);
1466         else
1467                 wlsc_compositor_idle_release(compositor);
1468
1469         wl_list_for_each(b, &compositor->binding_list, link) {
1470                 if (b->key == key &&
1471                     b->modifier == wd->modifier_state) {
1472                         b->handler(&wd->input_device,
1473                                    time, key, 0, state, b->data);
1474                         break;
1475                 }
1476         }
1477
1478         update_modifier_state(wd, key, state);
1479         end = device->keys.data + device->keys.size;
1480         for (k = device->keys.data; k < end; k++) {
1481                 if (*k == key)
1482                         *k = *--end;
1483         }
1484         device->keys.size = (void *) end - device->keys.data;
1485         if (state) {
1486                 k = wl_array_add(&device->keys, sizeof *k);
1487                 *k = key;
1488         }
1489
1490         if (device->keyboard_focus != NULL)
1491                 wl_client_post_event(device->keyboard_focus->client,
1492                                      &device->object,
1493                                      WL_INPUT_DEVICE_KEY, time, key, state);
1494 }
1495
1496 void
1497 notify_pointer_focus(struct wl_input_device *device,
1498                      uint32_t time, struct wlsc_output *output,
1499                      int32_t x, int32_t y)
1500 {
1501         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1502         struct wlsc_compositor *compositor =
1503                 (struct wlsc_compositor *) device->compositor;
1504         struct wlsc_surface *es;
1505         int32_t sx, sy;
1506
1507         if (output) {
1508                 device->x = x;
1509                 device->y = y;
1510                 es = pick_surface(device, &sx, &sy);
1511                 wl_input_device_set_pointer_focus(device,
1512                                                   &es->surface,
1513                                                   time, x, y, sx, sy);
1514
1515                 compositor->focus = 1;
1516
1517                 wd->sprite->x = device->x - wd->hotspot_x;
1518                 wd->sprite->y = device->y - wd->hotspot_y;
1519                 wlsc_surface_update_matrix(wd->sprite);
1520         } else {
1521                 wl_input_device_set_pointer_focus(device, NULL,
1522                                                   time, 0, 0, 0, 0);
1523                 compositor->focus = 0;
1524         }
1525
1526         wlsc_surface_damage(wd->sprite);
1527 }
1528
1529 void
1530 notify_keyboard_focus(struct wl_input_device *device,
1531                       uint32_t time, struct wlsc_output *output,
1532                       struct wl_array *keys)
1533 {
1534         struct wlsc_input_device *wd =
1535                 (struct wlsc_input_device *) device;
1536         struct wlsc_compositor *compositor =
1537                 (struct wlsc_compositor *) device->compositor;
1538         struct wlsc_surface *es;
1539         uint32_t *k, *end;
1540
1541         if (!wl_list_empty(&compositor->surface_list))
1542                 es = container_of(compositor->surface_list.next,
1543                                   struct wlsc_surface, link);
1544         else
1545                 es = NULL;
1546
1547         if (output) {
1548                 wl_array_copy(&wd->input_device.keys, keys);
1549                 wd->modifier_state = 0;
1550                 end = device->keys.data + device->keys.size;
1551                 for (k = device->keys.data; k < end; k++) {
1552                         wlsc_compositor_idle_inhibit(compositor);
1553                         update_modifier_state(wd, *k, 1);
1554                 }
1555
1556                 wl_input_device_set_keyboard_focus(&wd->input_device,
1557                                                    &es->surface, time);
1558         } else {
1559                 end = device->keys.data + device->keys.size;
1560                 for (k = device->keys.data; k < end; k++)
1561                         wlsc_compositor_idle_release(compositor);
1562
1563                 wd->modifier_state = 0;
1564                 wl_input_device_set_keyboard_focus(&wd->input_device,
1565                                                    NULL, time);
1566         }
1567 }
1568
1569
1570 static void
1571 input_device_attach(struct wl_client *client,
1572                     struct wl_input_device *device_base,
1573                     uint32_t time,
1574                     struct wl_buffer *buffer, int32_t x, int32_t y)
1575 {
1576         struct wlsc_input_device *device =
1577                 (struct wlsc_input_device *) device_base;
1578
1579         if (time < device->input_device.pointer_focus_time)
1580                 return;
1581         if (device->input_device.pointer_focus == NULL)
1582                 return;
1583         if (device->input_device.pointer_focus->client != client)
1584                 return;
1585
1586         if (buffer == NULL) {
1587                 wlsc_input_device_set_pointer_image(device,
1588                                                     WLSC_POINTER_LEFT_PTR);
1589                 return;
1590         }
1591
1592         wlsc_input_device_attach_buffer(device, buffer, x, y);
1593 }
1594
1595 const static struct wl_input_device_interface input_device_interface = {
1596         input_device_attach,
1597 };
1598
1599 void
1600 wlsc_input_device_init(struct wlsc_input_device *device,
1601                        struct wlsc_compositor *ec)
1602 {
1603         wl_input_device_init(&device->input_device, &ec->compositor);
1604
1605         device->input_device.object.interface = &wl_input_device_interface;
1606         device->input_device.object.implementation =
1607                 (void (**)(void)) &input_device_interface;
1608         wl_display_add_object(ec->wl_display, &device->input_device.object);
1609         wl_display_add_global(ec->wl_display, &device->input_device.object, NULL);
1610
1611         device->sprite = wlsc_surface_create(ec,
1612                                              device->input_device.x,
1613                                              device->input_device.y, 32, 32);
1614         device->hotspot_x = 16;
1615         device->hotspot_y = 16;
1616         device->modifier_state = 0;
1617
1618         device->input_device.motion_grab.interface = &motion_grab_interface;
1619
1620         wl_list_insert(ec->input_device_list.prev, &device->link);
1621
1622         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1623 }
1624
1625 static void
1626 wlsc_output_post_geometry(struct wl_client *client,
1627                           struct wl_object *global, uint32_t version)
1628 {
1629         struct wlsc_output *output =
1630                 container_of(global, struct wlsc_output, object);
1631
1632         wl_client_post_event(client, global,
1633                              WL_OUTPUT_GEOMETRY,
1634                              output->x, output->y,
1635                              output->width, output->height);
1636 }
1637
1638 static const char vertex_shader[] =
1639         "uniform mat4 proj;\n"
1640         "attribute vec2 position;\n"
1641         "attribute vec2 texcoord;\n"
1642         "varying vec2 v_texcoord;\n"
1643         "void main()\n"
1644         "{\n"
1645         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1646         "   v_texcoord = texcoord;\n"
1647         "}\n";
1648
1649 static const char texture_fragment_shader[] =
1650         "precision mediump float;\n"
1651         "varying vec2 v_texcoord;\n"
1652         "uniform sampler2D tex;\n"
1653         "void main()\n"
1654         "{\n"
1655         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1656         "}\n";
1657
1658 static const char solid_fragment_shader[] =
1659         "precision mediump float;\n"
1660         "varying vec2 v_texcoord;\n"
1661         "uniform vec4 color;\n"
1662         "void main()\n"
1663         "{\n"
1664         "   gl_FragColor = color\n;"
1665         "}\n";
1666
1667 static int
1668 compile_shader(GLenum type, const char *source)
1669 {
1670         GLuint s;
1671         char msg[512];
1672         GLint status;
1673
1674         s = glCreateShader(type);
1675         glShaderSource(s, 1, &source, NULL);
1676         glCompileShader(s);
1677         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
1678         if (!status) {
1679                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
1680                 fprintf(stderr, "shader info: %s\n", msg);
1681                 return GL_NONE;
1682         }
1683
1684         return s;
1685 }
1686
1687 static int
1688 wlsc_shader_init(struct wlsc_shader *shader,
1689                  const char *vertex_source, const char *fragment_source)
1690 {
1691         char msg[512];
1692         GLint status;
1693
1694         shader->vertex_shader =
1695                 compile_shader(GL_VERTEX_SHADER, vertex_source);
1696         shader->fragment_shader =
1697                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1698
1699         shader->program = glCreateProgram();
1700         glAttachShader(shader->program, shader->vertex_shader);
1701         glAttachShader(shader->program, shader->fragment_shader);
1702         glBindAttribLocation(shader->program, 0, "position");
1703         glBindAttribLocation(shader->program, 1, "texcoord");
1704
1705         glLinkProgram(shader->program);
1706         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1707         if (!status) {
1708                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1709                 fprintf(stderr, "link info: %s\n", msg);
1710                 return -1;
1711         }
1712
1713         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1714         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
1715
1716         return 0;
1717 }
1718
1719 static int
1720 init_solid_shader(struct wlsc_shader *shader,
1721                   GLuint vertex_shader, const char *fragment_source)
1722 {
1723         GLint status;
1724         char msg[512];
1725
1726         shader->vertex_shader = vertex_shader;
1727         shader->fragment_shader =
1728                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1729
1730         shader->program = glCreateProgram();
1731         glAttachShader(shader->program, shader->vertex_shader);
1732         glAttachShader(shader->program, shader->fragment_shader);
1733         glBindAttribLocation(shader->program, 0, "position");
1734         glBindAttribLocation(shader->program, 1, "texcoord");
1735
1736         glLinkProgram(shader->program);
1737         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1738         if (!status) {
1739                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1740                 fprintf(stderr, "link info: %s\n", msg);
1741                 return -1;
1742         }
1743
1744         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1745         shader->color_uniform = glGetUniformLocation(shader->program, "color");
1746
1747         return 0;
1748 }
1749
1750 void
1751 wlsc_output_destroy(struct wlsc_output *output)
1752 {
1753         destroy_surface(&output->background->surface.resource, NULL);
1754 }
1755
1756 void
1757 wlsc_output_move(struct wlsc_output *output, int x, int y)
1758 {
1759         struct wlsc_compositor *c = output->compositor;
1760         int flip;
1761
1762         output->x = x;
1763         output->y = y;
1764
1765         if (output->background) {
1766                 output->background->x = x;
1767                 output->background->y = y;
1768                 wlsc_surface_update_matrix(output->background);
1769         }
1770
1771         pixman_region32_init(&output->previous_damage_region);
1772
1773         wlsc_matrix_init(&output->matrix);
1774         wlsc_matrix_translate(&output->matrix,
1775                               -output->x - output->width / 2.0,
1776                               -output->y - output->height / 2.0, 0);
1777
1778         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1779         wlsc_matrix_scale(&output->matrix,
1780                           2.0 / output->width,
1781                           flip * 2.0 / output->height, 1);
1782
1783         pixman_region32_union_rect(&c->damage_region,
1784                                    &c->damage_region,
1785                                    x, y, output->width, output->height);
1786 }
1787
1788 void
1789 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1790                  int x, int y, int width, int height, uint32_t flags)
1791 {
1792         output->compositor = c;
1793         output->x = x;
1794         output->y = y;
1795         output->width = width;
1796         output->height = height;
1797
1798         output->background =
1799                 background_create(output, option_background);
1800
1801         output->flags = flags;
1802         output->finished = 1;
1803         wlsc_output_move(output, x, y);
1804
1805         output->object.interface = &wl_output_interface;
1806         wl_display_add_object(c->wl_display, &output->object);
1807         wl_display_add_global(c->wl_display, &output->object,
1808                               wlsc_output_post_geometry);
1809 }
1810
1811 static void
1812 shm_buffer_created(struct wl_buffer *buffer)
1813 {
1814         struct wl_list *surfaces_attached_to;
1815
1816         surfaces_attached_to = malloc(sizeof *surfaces_attached_to);
1817         if (!surfaces_attached_to) {
1818                 buffer->user_data = NULL;
1819                 return;
1820         }
1821
1822         wl_list_init(surfaces_attached_to);
1823
1824         buffer->user_data = surfaces_attached_to;
1825 }
1826
1827 static void
1828 shm_buffer_damaged(struct wl_buffer *buffer,
1829                    int32_t x, int32_t y, int32_t width, int32_t height)
1830 {
1831         struct wl_list *surfaces_attached_to = buffer->user_data;
1832         struct wlsc_surface *es;
1833         GLsizei tex_width = wl_shm_buffer_get_stride(buffer) / 4;
1834
1835         wl_list_for_each(es, surfaces_attached_to, buffer_link) {
1836                 glBindTexture(GL_TEXTURE_2D, es->texture);
1837                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1838                              tex_width, buffer->height, 0,
1839                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1840                              wl_shm_buffer_get_data(buffer));
1841                 /* Hmm, should use glTexSubImage2D() here but GLES2 doesn't
1842                  * support any unpack attributes except GL_UNPACK_ALIGNMENT. */
1843         }
1844 }
1845
1846 static void
1847 shm_buffer_destroyed(struct wl_buffer *buffer)
1848 {
1849         struct wl_list *surfaces_attached_to = buffer->user_data;
1850         struct wlsc_surface *es, *next;
1851
1852         wl_list_for_each_safe(es, next, surfaces_attached_to, buffer_link) {
1853                 es->buffer = NULL;
1854                 wl_list_remove(&es->buffer_link);
1855         }
1856
1857         free(surfaces_attached_to);
1858 }
1859
1860 const static struct wl_shm_callbacks shm_callbacks = {
1861         shm_buffer_created,
1862         shm_buffer_damaged,
1863         shm_buffer_destroyed
1864 };
1865
1866 int
1867 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1868 {
1869         struct wl_event_loop *loop;
1870         const char *extensions;
1871
1872         ec->wl_display = display;
1873
1874         wl_compositor_init(&ec->compositor, &compositor_interface, display);
1875
1876         ec->shm = wl_shm_init(display, &shm_callbacks);
1877
1878         ec->image_target_texture_2d =
1879                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
1880         ec->image_target_renderbuffer_storage = (void *)
1881                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
1882         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
1883         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
1884         ec->bind_display =
1885                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
1886         ec->unbind_display =
1887                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
1888
1889         extensions = (const char *) glGetString(GL_EXTENSIONS);
1890         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
1891                 fprintf(stderr,
1892                         "GL_EXT_texture_format_BGRA8888 not available\n");
1893                 return -1;
1894         }
1895
1896         extensions =
1897                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
1898         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
1899                 ec->has_bind_display = 1;
1900         if (ec->has_bind_display)
1901                 ec->bind_display(ec->display, ec->wl_display);
1902
1903         wl_list_init(&ec->surface_list);
1904         wl_list_init(&ec->input_device_list);
1905         wl_list_init(&ec->output_list);
1906         wl_list_init(&ec->binding_list);
1907         wl_list_init(&ec->animation_list);
1908         wlsc_tweener_init(&ec->fade.tweener, 0.8, 0.0, 0.0);
1909         ec->fade.animation.frame = fade_frame;
1910         wl_list_init(&ec->fade.animation.link);
1911
1912         wlsc_compositor_add_binding(ec, KEY_BACKSPACE, 0,
1913                                     MODIFIER_CTRL | MODIFIER_ALT,
1914                                     terminate_binding, ec);
1915
1916         create_pointer_images(ec);
1917
1918         screenshooter_create(ec);
1919
1920         glActiveTexture(GL_TEXTURE0);
1921
1922         if (wlsc_shader_init(&ec->texture_shader,
1923                              vertex_shader, texture_fragment_shader) < 0)
1924                 return -1;
1925         if (init_solid_shader(&ec->solid_shader,
1926                               ec->texture_shader.vertex_shader,
1927                               solid_fragment_shader) < 0)
1928                 return -1;
1929
1930         loop = wl_display_get_event_loop(ec->wl_display);
1931         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
1932         wl_event_source_timer_update(ec->idle_source, option_idle_time * 1000);
1933
1934         ec->timer_source = wl_event_loop_add_timer(loop, repaint, ec);
1935         pixman_region32_init(&ec->damage_region);
1936         wlsc_compositor_schedule_repaint(ec);
1937
1938         return 0;
1939 }
1940
1941 static int on_term_signal(int signal_number, void *data)
1942 {
1943         struct wlsc_compositor *ec = data;
1944
1945         wl_display_terminate(ec->wl_display);
1946
1947         return 1;
1948 }
1949
1950 int main(int argc, char *argv[])
1951 {
1952         struct wl_display *display;
1953         struct wlsc_compositor *ec;
1954         struct wl_event_loop *loop;
1955         GError *error = NULL;
1956         GOptionContext *context;
1957         int width, height;
1958         void *shell_module;
1959         int (*shell_init)(struct wlsc_compositor *ec);
1960
1961         g_type_init(); /* GdkPixbuf needs this, it seems. */
1962
1963         context = g_option_context_new(NULL);
1964         g_option_context_add_main_entries(context, option_entries, "Wayland");
1965         if (!g_option_context_parse(context, &argc, &argv, &error)) {
1966                 fprintf(stderr, "option parsing failed: %s\n", error->message);
1967                 exit(EXIT_FAILURE);
1968         }
1969         if (sscanf(option_geometry, "%dx%d", &width, &height) != 2) {
1970                 fprintf(stderr, "invalid geometry option: %s \n",
1971                         option_geometry);
1972                 exit(EXIT_FAILURE);
1973         }
1974
1975         display = wl_display_create();
1976
1977         ec = NULL;
1978
1979         shell_init = desktop_shell_init;
1980         if (option_shell) {
1981                 shell_module = dlopen(option_shell, RTLD_LAZY);
1982                 if (!shell_module) {
1983                         fprintf(stderr, "failed to load shell module: %m\n");
1984                         exit(EXIT_FAILURE);
1985                 }
1986                 shell_init = dlsym(shell_module, "shell_init");
1987                 if (!shell_init) {
1988                         fprintf(stderr,
1989                                 "failed to lookup shell init function: %m\n");
1990                         exit(EXIT_FAILURE);
1991                 }
1992         }
1993
1994 #if BUILD_WAYLAND_COMPOSITOR
1995         if (getenv("WAYLAND_DISPLAY"))
1996                 ec = wayland_compositor_create(display, width, height);
1997 #endif
1998
1999 #if BUILD_X11_COMPOSITOR
2000         if (ec == NULL && getenv("DISPLAY"))
2001                 ec = x11_compositor_create(display, width, height);
2002 #endif
2003
2004 #if BUILD_OPENWFD_COMPOSITOR
2005         if (ec == NULL && getenv("OPENWFD"))
2006                 ec = wfd_compositor_create(display, option_connector);
2007 #endif
2008
2009 #if BUILD_DRM_COMPOSITOR
2010         if (ec == NULL)
2011                 ec = drm_compositor_create(display, option_connector);
2012 #endif
2013
2014         if (ec == NULL) {
2015                 fprintf(stderr, "failed to create compositor\n");
2016                 exit(EXIT_FAILURE);
2017         }
2018
2019         if (shell_init(ec) < 0)
2020                 exit(EXIT_FAILURE);
2021
2022         if (wl_display_add_socket(display, option_socket_name)) {
2023                 fprintf(stderr, "failed to add socket: %m\n");
2024                 exit(EXIT_FAILURE);
2025         }
2026
2027         loop = wl_display_get_event_loop(ec->wl_display);
2028         wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
2029         wl_event_loop_add_signal(loop, SIGINT, on_term_signal, ec);
2030
2031         wl_display_run(display);
2032
2033         if (ec->has_bind_display)
2034                 ec->unbind_display(ec->display, display);
2035         wl_display_destroy(display);
2036
2037         ec->destroy(ec);
2038
2039         return 0;
2040 }