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 #include <getopt.h>
  37
  38 #include "wayland-server.h"
  39 #include "compositor.h"
  40
  41 /* The plan here is to generate a random anonymous socket name and
  42  * advertise that through a service on the session dbus.
  43  */
  44 static const char *option_socket_name = NULL;
  45 static const char *option_background = "background.jpg";
  46 static const char *option_shell = NULL;
  47 static int option_idle_time = 300;
  48 static int option_connector = 0;
  49
  50 WL_EXPORT void
  51 wlsc_matrix_init(struct wlsc_matrix *matrix)
  52 {
  53         static const struct wlsc_matrix identity = {
  54                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  0, 0, 0, 1 }
  55         };
  56
  57         memcpy(matrix, &identity, sizeof identity);
  58 }
  59
  60 static void
  61 wlsc_matrix_multiply(struct wlsc_matrix *m, const struct wlsc_matrix *n)
  62 {
  63         struct wlsc_matrix tmp;
  64         const GLfloat *row, *column;
  65         div_t d;
  66         int i, j;
  67
  68         for (i = 0; i < 16; i++) {
  69                 tmp.d[i] = 0;
  70                 d = div(i, 4);
  71                 row = m->d + d.quot * 4;
  72                 column = n->d + d.rem;
  73                 for (j = 0; j < 4; j++)
  74                         tmp.d[i] += row[j] * column[j * 4];
  75         }
  76         memcpy(m, &tmp, sizeof tmp);
  77 }
  78
  79 static void
  80 wlsc_matrix_translate(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  81 {
  82         struct wlsc_matrix translate = {
  83                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  x, y, z, 1 }
  84         };
  85
  86         wlsc_matrix_multiply(matrix, &translate);
  87 }
  88
  89 static void
  90 wlsc_matrix_scale(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  91 {
  92         struct wlsc_matrix scale = {
  93                 { x, 0, 0, 0,  0, y, 0, 0,  0, 0, z, 0,  0, 0, 0, 1 }
  94         };
  95
  96         wlsc_matrix_multiply(matrix, &scale);
  97 }
  98
  99 static void
 100 wlsc_matrix_transform(struct wlsc_matrix *matrix, struct wlsc_vector *v)
 101 {
 102         int i, j;
 103         struct wlsc_vector t;
 104
 105         for (i = 0; i < 4; i++) {
 106                 t.f[i] = 0;
 107                 for (j = 0; j < 4; j++)
 108                         t.f[i] += v->f[j] * matrix->d[i + j * 4];
 109         }
 110
 111         *v = t;
 112 }
 113
 114 WL_EXPORT void
 115 wlsc_tweener_init(struct wlsc_tweener *tweener,
 116                   double k, double current, double target)
 117 {
 118         tweener->k = k;
 119         tweener->current = current;
 120         tweener->previous = current;
 121         tweener->target = target;
 122 }
 123
 124 WL_EXPORT void
 125 wlsc_tweener_update(struct wlsc_tweener *tweener, uint32_t msec)
 126 {
 127         double force, current, step;
 128
 129         step = (msec - tweener->timestamp) / 100.0;
 130         tweener->timestamp = msec;
 131
 132         current = tweener->current;
 133         force = tweener->k * (tweener->target - current) / 10.0 +
 134                 (tweener->previous - current);
 135
 136         tweener->current =
 137                 current + (current - tweener->previous) + force * step * step;
 138         tweener->previous = current;
 139
 140         if (tweener->current >= 1.0) {
 141                 tweener->current = 1.0;
 142                 tweener->previous = 1.0;
 143         }
 144
 145         if (tweener->current <= 0.0) {
 146                 tweener->current = 0.0;
 147                 tweener->previous = 0.0;
 148         }
 149 }
 150
 151 WL_EXPORT int
 152 wlsc_tweener_done(struct wlsc_tweener *tweener)
 153 {
 154         return fabs(tweener->previous - tweener->target) < 0.0002 &&
 155                 fabs(tweener->current - tweener->target) < 0.0002;
 156 }
 157
 158 WL_EXPORT struct wlsc_surface *
 159 wlsc_surface_create(struct wlsc_compositor *compositor,
 160                     int32_t x, int32_t y, int32_t width, int32_t height)
 161 {
 162         struct wlsc_surface *surface;
 163
 164         surface = malloc(sizeof *surface);
 165         if (surface == NULL)
 166                 return NULL;
 167
 168         wl_list_init(&surface->surface.destroy_listener_list);
 169         wl_list_init(&surface->link);
 170         wl_list_init(&surface->buffer_link);
 171         surface->map_type = WLSC_SURFACE_MAP_UNMAPPED;
 172
 173         glGenTextures(1, &surface->texture);
 174         glBindTexture(GL_TEXTURE_2D, surface->texture);
 175         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 176         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 177         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 178         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 179
 180         surface->compositor = compositor;
 181         surface->visual = NULL;
 182         surface->image = EGL_NO_IMAGE_KHR;
 183         surface->saved_texture = 0;
 184         surface->buffer = NULL;
 185         surface->x = x;
 186         surface->y = y;
 187         surface->width = width;
 188         surface->height = height;
 189         wlsc_matrix_init(&surface->matrix);
 190         wlsc_matrix_scale(&surface->matrix, width, height, 1);
 191         wlsc_matrix_translate(&surface->matrix, x, y, 0);
 192
 193         wlsc_matrix_init(&surface->matrix_inv);
 194         wlsc_matrix_translate(&surface->matrix_inv, -x, -y, 0);
 195         wlsc_matrix_scale(&surface->matrix_inv, 1.0 / width, 1.0 / height, 1);
 196
 197         return surface;
 198 }
 199
 200 WL_EXPORT void
 201 wlsc_surface_damage_rectangle(struct wlsc_surface *surface,
 202                               int32_t x, int32_t y,
 203                               int32_t width, int32_t height)
 204 {
 205         struct wlsc_compositor *compositor = surface->compositor;
 206
 207         pixman_region32_union_rect(&compositor->damage_region,
 208                                    &compositor->damage_region,
 209                                    surface->x + x, surface->y + y,
 210                                    width, height);
 211         wlsc_compositor_schedule_repaint(compositor);
 212 }
 213
 214 WL_EXPORT void
 215 wlsc_surface_damage(struct wlsc_surface *surface)
 216 {
 217         wlsc_surface_damage_rectangle(surface, 0, 0,
 218                                       surface->width, surface->height);
 219 }
 220
 221 WL_EXPORT uint32_t
 222 wlsc_compositor_get_time(void)
 223 {
 224         struct timeval tv;
 225
 226         gettimeofday(&tv, NULL);
 227
 228         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 229 }
 230
 231 static void
 232 destroy_surface(struct wl_resource *resource, struct wl_client *client)
 233 {
 234         struct wlsc_surface *surface =
 235                 container_of(resource, struct wlsc_surface, surface.resource);
 236         struct wl_listener *l, *next;
 237         struct wlsc_compositor *compositor = surface->compositor;
 238         uint32_t time;
 239
 240         wlsc_surface_damage(surface);
 241
 242         wl_list_remove(&surface->link);
 243         if (surface->saved_texture == 0)
 244                 glDeleteTextures(1, &surface->texture);
 245         else
 246                 glDeleteTextures(1, &surface->saved_texture);
 247
 248
 249         if (surface->image != EGL_NO_IMAGE_KHR)
 250                 compositor->destroy_image(compositor->display,
 251                                           surface->image);
 252
 253         wl_list_remove(&surface->buffer_link);
 254
 255         time = wlsc_compositor_get_time();
 256         wl_list_for_each_safe(l, next,
 257                               &surface->surface.destroy_listener_list, link)
 258                 l->func(l, &surface->surface, time);
 259
 260         free(surface);
 261 }
 262
 263 uint32_t *
 264 wlsc_load_image(const char *filename, int width, int height)
 265 {
 266         GdkPixbuf *pixbuf;
 267         GError *error = NULL;
 268         int stride, i, n_channels;
 269         unsigned char *pixels, *end, *argb_pixels, *s, *d;
 270
 271         pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
 272                                                    width, height,
 273                                                    FALSE, &error);
 274         if (error != NULL) {
 275                 fprintf(stderr, "failed to load image: %s\n", error->message);
 276                 g_error_free(error);
 277                 return NULL;
 278         }
 279
 280         stride = gdk_pixbuf_get_rowstride(pixbuf);
 281         pixels = gdk_pixbuf_get_pixels(pixbuf);
 282         n_channels = gdk_pixbuf_get_n_channels(pixbuf);
 283
 284         argb_pixels = malloc (height * width * 4);
 285         if (argb_pixels == NULL) {
 286                 g_object_unref(pixbuf);
 287                 return NULL;
 288         }
 289
 290         if (n_channels == 4) {
 291                 for (i = 0; i < height; i++) {
 292                         s = pixels + i * stride;
 293                         end = s + width * 4;
 294                         d = argb_pixels + i * width * 4;
 295                         while (s < end) {
 296                                 unsigned int t;
 297
 298 #define MULT(_d,c,a,t) \
 299         do { t = c * a + 0x7f; _d = ((t >> 8) + t) >> 8; } while (0)
 300
 301                                 MULT(d[0], s[2], s[3], t);
 302                                 MULT(d[1], s[1], s[3], t);
 303                                 MULT(d[2], s[0], s[3], t);
 304                                 d[3] = s[3];
 305                                 s += 4;
 306                                 d += 4;
 307                         }
 308                 }
 309         } else if (n_channels == 3) {
 310                 for (i = 0; i < height; i++) {
 311                         s = pixels + i * stride;
 312                         end = s + width * 3;
 313                         d = argb_pixels + i * width * 4;
 314                         while (s < end) {
 315                                 d[0] = s[2];
 316                                 d[1] = s[1];
 317                                 d[2] = s[0];
 318                                 d[3] = 0xff;
 319                                 s += 3;
 320                                 d += 4;
 321                         }
 322                 }
 323         }
 324
 325         g_object_unref(pixbuf);
 326
 327         return (uint32_t *) argb_pixels;
 328 }
 329
 330 static void
 331 wlsc_buffer_attach(struct wl_buffer *buffer, struct wl_surface *surface)
 332 {
 333         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 334         struct wlsc_compositor *ec = es->compositor;
 335         struct wl_list *surfaces_attached_to;
 336
 337         if (es->saved_texture != 0)
 338                 es->texture = es->saved_texture;
 339
 340         glBindTexture(GL_TEXTURE_2D, es->texture);
 341
 342         if (wl_buffer_is_shm(buffer)) {
 343                 /* Unbind any EGLImage texture that may be bound, so we don't
 344                  * overwrite it.*/
 345                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 346                              0, 0, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, NULL);
 347                 es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
 348                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 349                              es->pitch, buffer->height, 0,
 350                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
 351                              wl_shm_buffer_get_data(buffer));
 352                 es->visual = buffer->visual;
 353
 354                 surfaces_attached_to = buffer->user_data;
 355
 356                 if (es->buffer)
 357                         wl_list_remove(&es->buffer_link);
 358                 wl_list_insert(surfaces_attached_to, &es->buffer_link);
 359         } else {
 360                 es->image = ec->create_image(ec->display, NULL,
 361                                              EGL_WAYLAND_BUFFER_WL,
 362                                              buffer, NULL);
 363
 364                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 365                 es->visual = buffer->visual;
 366                 es->pitch = es->width;
 367         }
 368 }
 369
 370 static void
 371 wlsc_sprite_attach(struct wlsc_sprite *sprite, struct wl_surface *surface)
 372 {
 373         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 374         struct wlsc_compositor *ec = es->compositor;
 375
 376         es->pitch = es->width;
 377         es->image = sprite->image;
 378         if (sprite->image != EGL_NO_IMAGE_KHR) {
 379                 glBindTexture(GL_TEXTURE_2D, es->texture);
 380                 ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
 381         } else {
 382                 if (es->saved_texture == 0)
 383                         es->saved_texture = es->texture;
 384                 es->texture = sprite->texture;
 385         }
 386
 387         es->visual = sprite->visual;
 388 }
 389
 390 enum sprite_usage {
 391         SPRITE_USE_CURSOR = (1 << 0),
 392 };
 393
 394 static struct wlsc_sprite *
 395 create_sprite_from_png(struct wlsc_compositor *ec,
 396                        const char *filename, int width, int height,
 397                        uint32_t usage)
 398 {
 399         uint32_t *pixels;
 400         struct wlsc_sprite *sprite;
 401
 402         pixels = wlsc_load_image(filename, width, height);
 403         if(pixels == NULL)
 404                 return NULL;
 405
 406         sprite = malloc(sizeof *sprite);
 407         if (sprite == NULL) {
 408                 free(pixels);
 409                 return NULL;
 410         }
 411
 412         sprite->visual = &ec->compositor.premultiplied_argb_visual;
 413         sprite->width = width;
 414         sprite->height = height;
 415         sprite->image = EGL_NO_IMAGE_KHR;
 416
 417         if (usage & SPRITE_USE_CURSOR && ec->create_cursor_image != NULL)
 418                 sprite->image = ec->create_cursor_image(ec, width, height);
 419
 420         glGenTextures(1, &sprite->texture);
 421         glBindTexture(GL_TEXTURE_2D, sprite->texture);
 422         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 423         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 424         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 425         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 426
 427         if (sprite->image != EGL_NO_IMAGE_KHR) {
 428                 ec->image_target_texture_2d(GL_TEXTURE_2D, sprite->image);
 429                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,
 430                                 GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 431         } else {
 432                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT, width, height, 0,
 433                              GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixels);
 434         }
 435
 436         free(pixels);
 437
 438         return sprite;
 439 }
 440
 441 static const struct {
 442         const char *filename;
 443         int hotspot_x, hotspot_y;
 444 } pointer_images[] = {
 445         { DATADIR "/wayland/bottom_left_corner.png",     6, 30 },
 446         { DATADIR "/wayland/bottom_right_corner.png",   28, 28 },
 447         { DATADIR "/wayland/bottom_side.png",           16, 20 },
 448         { DATADIR "/wayland/grabbing.png",              20, 17 },
 449         { DATADIR "/wayland/left_ptr.png",              10,  5 },
 450         { DATADIR "/wayland/left_side.png",             10, 20 },
 451         { DATADIR "/wayland/right_side.png",            30, 19 },
 452         { DATADIR "/wayland/top_left_corner.png",        8,  8 },
 453         { DATADIR "/wayland/top_right_corner.png",      26,  8 },
 454         { DATADIR "/wayland/top_side.png",              18,  8 },
 455         { DATADIR "/wayland/xterm.png",                 15, 15 }
 456 };
 457
 458 static void
 459 create_pointer_images(struct wlsc_compositor *ec)
 460 {
 461         int i, count;
 462         const int width = 32, height = 32;
 463
 464         count = ARRAY_LENGTH(pointer_images);
 465         ec->pointer_sprites = malloc(count * sizeof *ec->pointer_sprites);
 466         for (i = 0; i < count; i++) {
 467                 ec->pointer_sprites[i] =
 468                         create_sprite_from_png(ec,
 469                                                pointer_images[i].filename,
 470                                                width, height,
 471                                                SPRITE_USE_CURSOR);
 472         }
 473 }
 474
 475 static struct wlsc_surface *
 476 background_create(struct wlsc_output *output, const char *filename)
 477 {
 478         struct wlsc_surface *background;
 479         struct wlsc_sprite *sprite;
 480
 481         background = wlsc_surface_create(output->compositor,
 482                                          output->x, output->y,
 483                                          output->width, output->height);
 484         if (background == NULL)
 485                 return NULL;
 486
 487         sprite = create_sprite_from_png(output->compositor, filename,
 488                                         output->width, output->height, 0);
 489         if (sprite == NULL) {
 490                 free(background);
 491                 return NULL;
 492         }
 493
 494         wlsc_sprite_attach(sprite, &background->surface);
 495
 496         return background;
 497 }
 498
 499 static void
 500 wlsc_surface_draw(struct wlsc_surface *es,
 501                   struct wlsc_output *output, pixman_region32_t *clip)
 502 {
 503         struct wlsc_compositor *ec = es->compositor;
 504         GLfloat *v, inv_width, inv_height;
 505         unsigned int *p;
 506         pixman_region32_t repaint;
 507         pixman_box32_t *rectangles;
 508         int i, n;
 509
 510         pixman_region32_init_rect(&repaint,
 511                                   es->x, es->y, es->width, es->height);
 512         pixman_region32_intersect(&repaint, &repaint, clip);
 513         if (!pixman_region32_not_empty(&repaint))
 514                 return;
 515
 516         if (es->visual == &ec->compositor.argb_visual) {
 517                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 518                 glEnable(GL_BLEND);
 519         } else if (es->visual == &ec->compositor.premultiplied_argb_visual) {
 520                 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 521                 glEnable(GL_BLEND);
 522         } else {
 523                 glDisable(GL_BLEND);
 524         }
 525
 526         rectangles = pixman_region32_rectangles(&repaint, &n);
 527         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 528         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 529         inv_width = 1.0 / es->pitch;
 530         inv_height = 1.0 / es->height;
 531         for (i = 0; i < n; i++, v += 16, p += 6) {
 532                 v[ 0] = rectangles[i].x1;
 533                 v[ 1] = rectangles[i].y1;
 534                 v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
 535                 v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
 536
 537                 v[ 4] = rectangles[i].x1;
 538                 v[ 5] = rectangles[i].y2;
 539                 v[ 6] = v[ 2];
 540                 v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
 541
 542                 v[ 8] = rectangles[i].x2;
 543                 v[ 9] = rectangles[i].y1;
 544                 v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
 545                 v[11] = v[ 3];
 546
 547                 v[12] = rectangles[i].x2;
 548                 v[13] = rectangles[i].y2;
 549                 v[14] = v[10];
 550                 v[15] = v[ 7];
 551
 552                 p[0] = i * 4 + 0;
 553                 p[1] = i * 4 + 1;
 554                 p[2] = i * 4 + 2;
 555                 p[3] = i * 4 + 2;
 556                 p[4] = i * 4 + 1;
 557                 p[5] = i * 4 + 3;
 558         }
 559
 560         glBindTexture(GL_TEXTURE_2D, es->texture);
 561         v = ec->vertices.data;
 562         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 563         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 564         glEnableVertexAttribArray(0);
 565         glEnableVertexAttribArray(1);
 566         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 567
 568         ec->vertices.size = 0;
 569         ec->indices.size = 0;
 570         pixman_region32_fini(&repaint);
 571 }
 572
 573 static void
 574 wlsc_surface_raise(struct wlsc_surface *surface)
 575 {
 576         struct wlsc_compositor *compositor = surface->compositor;
 577
 578         wl_list_remove(&surface->link);
 579         wl_list_insert(&compositor->surface_list, &surface->link);
 580 }
 581
 582 WL_EXPORT void
 583 wlsc_surface_update_matrix(struct wlsc_surface *es)
 584 {
 585         wlsc_matrix_init(&es->matrix);
 586         wlsc_matrix_scale(&es->matrix, es->width, es->height, 1);
 587         wlsc_matrix_translate(&es->matrix, es->x, es->y, 0);
 588
 589         wlsc_matrix_init(&es->matrix_inv);
 590         wlsc_matrix_translate(&es->matrix_inv, -es->x, -es->y, 0);
 591         wlsc_matrix_scale(&es->matrix_inv,
 592                           1.0 / es->width, 1.0 / es->height, 1);
 593 }
 594
 595 WL_EXPORT void
 596 wlsc_compositor_damage_all(struct wlsc_compositor *compositor)
 597 {
 598         struct wlsc_output *output;
 599
 600         wl_list_for_each(output, &compositor->output_list, link)
 601                 wlsc_output_damage(output);
 602 }
 603
 604 WL_EXPORT void
 605 wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
 606 {
 607         struct wlsc_compositor *compositor = output->compositor;
 608         struct wlsc_surface *es;
 609         struct wlsc_animation *animation, *next;
 610
 611         wl_list_for_each(es, &compositor->surface_list, link) {
 612                 if (es->output == output) {
 613                         wl_display_post_frame(compositor->wl_display,
 614                                               &es->surface, msecs);
 615                 }
 616         }
 617
 618         output->finished = 1;
 619
 620         wl_event_source_timer_update(compositor->timer_source, 5);
 621         compositor->repaint_on_timeout = 1;
 622
 623         wl_list_for_each_safe(animation, next,
 624                               &compositor->animation_list, link)
 625                 animation->frame(animation, output, msecs);
 626 }
 627
 628 WL_EXPORT void
 629 wlsc_output_damage(struct wlsc_output *output)
 630 {
 631         struct wlsc_compositor *compositor = output->compositor;
 632
 633         pixman_region32_union_rect(&compositor->damage_region,
 634                                    &compositor->damage_region,
 635                                    output->x, output->y,
 636                                    output->width, output->height);
 637         wlsc_compositor_schedule_repaint(compositor);
 638 }
 639
 640 static void
 641 fade_frame(struct wlsc_animation *animation,
 642            struct wlsc_output *output, uint32_t msecs)
 643 {
 644         struct wlsc_compositor *compositor =
 645                 container_of(animation,
 646                              struct wlsc_compositor, fade.animation);
 647
 648         wlsc_tweener_update(&compositor->fade.tweener, msecs);
 649         if (wlsc_tweener_done(&compositor->fade.tweener)) {
 650                 if (compositor->fade.tweener.current > 0.999) {
 651                         compositor->state = WLSC_COMPOSITOR_SLEEPING;
 652                         compositor->shell->lock(compositor->shell);
 653                 }
 654                 compositor->fade.tweener.current =
 655                         compositor->fade.tweener.target;
 656                 wl_list_remove(&animation->link);
 657                 wl_list_init(&animation->link);
 658         }
 659
 660         wlsc_output_damage(output);
 661 }
 662
 663 static void
 664 fade_output(struct wlsc_output *output,
 665             GLfloat tint, pixman_region32_t *region)
 666 {
 667         struct wlsc_compositor *compositor = output->compositor;
 668         struct wlsc_surface surface;
 669         GLfloat color[4] = { 0.0, 0.0, 0.0, tint };
 670
 671         surface.compositor = compositor;
 672         surface.x = output->x;
 673         surface.y = output->y;
 674         surface.width = output->width;
 675         surface.height = output->height;
 676         surface.texture = GL_NONE;
 677
 678         if (tint <= 1.0)
 679                 surface.visual =
 680                         &compositor->compositor.premultiplied_argb_visual;
 681         else
 682                 surface.visual = &compositor->compositor.rgb_visual;
 683
 684         glUseProgram(compositor->solid_shader.program);
 685         glUniformMatrix4fv(compositor->solid_shader.proj_uniform,
 686                            1, GL_FALSE, output->matrix.d);
 687         glUniform4fv(compositor->solid_shader.color_uniform, 1, color);
 688         wlsc_surface_draw(&surface, output, region);
 689 }
 690
 691 static void
 692 wlsc_output_repaint(struct wlsc_output *output)
 693 {
 694         struct wlsc_compositor *ec = output->compositor;
 695         struct wlsc_surface *es;
 696         struct wlsc_input_device *eid;
 697         pixman_region32_t new_damage, total_damage, repaint;
 698         int using_hardware_cursor = 1;
 699
 700         output->prepare_render(output);
 701
 702         glViewport(0, 0, output->width, output->height);
 703
 704         glUseProgram(ec->texture_shader.program);
 705         glUniformMatrix4fv(ec->texture_shader.proj_uniform,
 706                            1, GL_FALSE, output->matrix.d);
 707         glUniform1i(ec->texture_shader.tex_uniform, 0);
 708
 709         pixman_region32_init(&new_damage);
 710         pixman_region32_init(&total_damage);
 711         pixman_region32_intersect_rect(&new_damage,
 712                                        &ec->damage_region,
 713                                        output->x, output->y,
 714                                        output->width, output->height);
 715         pixman_region32_subtract(&ec->damage_region,
 716                                  &ec->damage_region, &new_damage);
 717         pixman_region32_union(&total_damage, &new_damage,
 718                               &output->previous_damage_region);
 719         pixman_region32_copy(&output->previous_damage_region, &new_damage);
 720
 721         if (ec->focus)
 722                 if (output->set_hardware_cursor(output, ec->input_device) < 0)
 723                         using_hardware_cursor = 0;
 724         if (ec->fade.tweener.current > 0.001)
 725                 using_hardware_cursor = 0;
 726
 727         es = container_of(ec->surface_list.next, struct wlsc_surface, link);
 728         if (es->fullscreen_output == output) {
 729                 if (es->visual == &ec->compositor.rgb_visual &&
 730                     using_hardware_cursor) {
 731                         if (output->prepare_scanout_surface(output, es) == 0) {
 732                                 /* We're drawing nothing now,
 733                                  * draw the damaged regions later. */
 734                                 pixman_region32_union(&ec->damage_region,
 735                                                       &ec->damage_region,
 736                                                       &total_damage);
 737                                 return;
 738                         }
 739                 }
 740
 741                 if (es->width < output->width ||
 742                     es->height < output->height)
 743                         glClear(GL_COLOR_BUFFER_BIT);
 744                 wlsc_surface_draw(es, output, &total_damage);
 745         } else {
 746                 wl_list_for_each(es, &ec->surface_list, link) {
 747                         if (es->visual != &ec->compositor.rgb_visual)
 748                                 continue;
 749
 750                         pixman_region32_init_rect(&repaint,
 751                                                   es->x, es->y,
 752                                                   es->width, es->height);
 753                         wlsc_surface_draw(es, output, &total_damage);
 754                         pixman_region32_subtract(&total_damage,
 755                                                  &total_damage, &repaint);
 756                 }
 757
 758                 if (output->background)
 759                         wlsc_surface_draw(output->background,
 760                                           output, &total_damage);
 761                 else
 762                         fade_output(output, 1.0, &total_damage);
 763
 764                 glUseProgram(ec->texture_shader.program);
 765                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 766                         if (ec->overlay == es)
 767                                 continue;
 768
 769                         if (es->visual == &ec->compositor.rgb_visual) {
 770                                 pixman_region32_union_rect(&total_damage,
 771                                                            &total_damage,
 772                                                            es->x, es->y,
 773                                                            es->width, es->height);
 774                                 continue;
 775                         }
 776
 777                         wlsc_surface_draw(es, output, &total_damage);
 778                 }
 779         }
 780
 781         if (ec->overlay)
 782                 wlsc_surface_draw(ec->overlay, output, &total_damage);
 783
 784         if (ec->focus)
 785                 wl_list_for_each(eid, &ec->input_device_list, link) {
 786                         if (&eid->input_device != ec->input_device ||
 787                             !using_hardware_cursor)
 788                                 wlsc_surface_draw(eid->sprite, output,
 789                                                   &total_damage);
 790                 }
 791
 792         if (ec->fade.tweener.current > 0.001)
 793                 fade_output(output, ec->fade.tweener.current, &total_damage);
 794 }
 795
 796 static int
 797 repaint(void *data)
 798 {
 799         struct wlsc_compositor *ec = data;
 800         struct wlsc_output *output;
 801         int repainted_all_outputs = 1;
 802
 803         wl_list_for_each(output, &ec->output_list, link) {
 804                 if (!output->repaint_needed)
 805                         continue;
 806
 807                 if (!output->finished) {
 808                         repainted_all_outputs = 0;
 809                         continue;
 810                 }
 811
 812                 wlsc_output_repaint(output);
 813                 output->finished = 0;
 814                 output->repaint_needed = 0;
 815                 output->present(output);
 816         }
 817
 818         if (repainted_all_outputs)
 819                 ec->repaint_on_timeout = 0;
 820         else
 821                 wl_event_source_timer_update(ec->timer_source, 1);
 822
 823         return 1;
 824 }
 825
 826 WL_EXPORT void
 827 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 828 {
 829         struct wlsc_output *output;
 830
 831         if (compositor->state == WLSC_COMPOSITOR_SLEEPING)
 832                 return;
 833
 834         wl_list_for_each(output, &compositor->output_list, link)
 835                 output->repaint_needed = 1;
 836
 837         if (compositor->repaint_on_timeout)
 838                 return;
 839
 840         wl_event_source_timer_update(compositor->timer_source, 1);
 841         compositor->repaint_on_timeout = 1;
 842 }
 843
 844 WL_EXPORT void
 845 wlsc_compositor_fade(struct wlsc_compositor *compositor, float tint)
 846 {
 847         int done;
 848
 849         done = wlsc_tweener_done(&compositor->fade.tweener);
 850         compositor->fade.tweener.target = tint;
 851         if (wlsc_tweener_done(&compositor->fade.tweener))
 852                 return;
 853
 854         if (done)
 855                 compositor->fade.tweener.timestamp =
 856                         wlsc_compositor_get_time();
 857
 858         wlsc_compositor_damage_all(compositor);
 859         if (wl_list_empty(&compositor->fade.animation.link))
 860                 wl_list_insert(compositor->animation_list.prev,
 861                                &compositor->fade.animation.link);
 862 }
 863
 864 static void
 865 surface_destroy(struct wl_client *client,
 866                 struct wl_surface *surface)
 867 {
 868         wl_resource_destroy(&surface->resource, client);
 869 }
 870
 871 WL_EXPORT void
 872 wlsc_surface_assign_output(struct wlsc_surface *es)
 873 {
 874         struct wlsc_compositor *ec = es->compositor;
 875         struct wlsc_output *output;
 876
 877         struct wlsc_output *tmp = es->output;
 878         es->output = NULL;
 879
 880         wl_list_for_each(output, &ec->output_list, link) {
 881                 if (output->x < es->x && es->x < output->x + output->width &&
 882                     output->y < es->y && es->y < output->y + output->height) {
 883                         if (output != tmp)
 884                                 printf("assiging surface %p to output %p\n",
 885                                        es, output);
 886                         es->output = output;
 887                 }
 888         }
 889
 890         if (es->output == NULL) {
 891                 printf("no output found\n");
 892                 es->output = container_of(ec->output_list.next,
 893                                           struct wlsc_output, link);
 894         }
 895 }
 896
 897 static void
 898 surface_attach(struct wl_client *client,
 899                struct wl_surface *surface, struct wl_buffer *buffer,
 900                int32_t x, int32_t y)
 901 {
 902         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 903
 904         /* FIXME: This damages the entire old surface, but we should
 905          * really just damage the part that's no longer covered by the
 906          * surface.  Anything covered by the new surface will be
 907          * damaged by the client. */
 908         wlsc_surface_damage(es);
 909
 910         wlsc_buffer_attach(buffer, surface);
 911
 912         es->buffer = buffer;
 913         switch (es->map_type) {
 914         case WLSC_SURFACE_MAP_FULLSCREEN:
 915                 es->x = (es->fullscreen_output->width - es->width) / 2;
 916                 es->y = (es->fullscreen_output->height - es->height) / 2;
 917                 break;
 918         default:
 919                 es->x += x;
 920                 es->y += y;
 921                 break;
 922         }
 923         es->width = buffer->width;
 924         es->height = buffer->height;
 925         if (x != 0 || y != 0)
 926                 wlsc_surface_assign_output(es);
 927         wlsc_surface_update_matrix(es);
 928
 929         es->compositor->shell->attach(es->compositor->shell, es);
 930 }
 931
 932 static void
 933 surface_map_toplevel(struct wl_client *client,
 934                      struct wl_surface *surface)
 935 {
 936         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 937         struct wlsc_compositor *ec = es->compositor;
 938
 939         switch (es->map_type) {
 940         case WLSC_SURFACE_MAP_UNMAPPED:
 941                 es->x = 10 + random() % 400;
 942                 es->y = 10 + random() % 400;
 943                 wlsc_surface_update_matrix(es);
 944                 /* assign to first output */
 945                 es->output = container_of(ec->output_list.next,
 946                                           struct wlsc_output, link);
 947                 wl_list_insert(&es->compositor->surface_list, &es->link);
 948                 break;
 949         case WLSC_SURFACE_MAP_TOPLEVEL:
 950                 return;
 951         case WLSC_SURFACE_MAP_FULLSCREEN:
 952                 es->fullscreen_output = NULL;
 953                 es->x = es->saved_x;
 954                 es->y = es->saved_y;
 955                 wlsc_surface_update_matrix(es);
 956                 break;
 957         default:
 958                 break;
 959         }
 960
 961         wlsc_surface_damage(es);
 962         es->map_type = WLSC_SURFACE_MAP_TOPLEVEL;
 963 }
 964
 965 static void
 966 surface_map_transient(struct wl_client *client,
 967                       struct wl_surface *surface, struct wl_surface *parent,
 968                       int x, int y, uint32_t flags)
 969 {
 970         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 971         struct wlsc_surface *pes = (struct wlsc_surface *) parent;
 972
 973         switch (es->map_type) {
 974         case WLSC_SURFACE_MAP_UNMAPPED:
 975                 wl_list_insert(&es->compositor->surface_list, &es->link);
 976                 /* assign to parents output  */
 977                 es->output = pes->output;
 978                 break;
 979         case WLSC_SURFACE_MAP_FULLSCREEN:
 980                 es->fullscreen_output = NULL;
 981                 break;
 982         default:
 983                 break;
 984         }
 985
 986         es->x = pes->x + x;
 987         es->y = pes->y + y;
 988
 989         wlsc_surface_update_matrix(es);
 990         wlsc_surface_damage(es);
 991         es->map_type = WLSC_SURFACE_MAP_TRANSIENT;
 992 }
 993
 994 static void
 995 surface_map_fullscreen(struct wl_client *client, struct wl_surface *surface)
 996 {
 997         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 998         struct wlsc_output *output;
 999
1000         /* FIXME: Fullscreen on first output */
1001         /* FIXME: Handle output going away */
1002         output = container_of(es->compositor->output_list.next,
1003                               struct wlsc_output, link);
1004
1005         switch (es->map_type) {
1006         case WLSC_SURFACE_MAP_UNMAPPED:
1007                 es->x = 10 + random() % 400;
1008                 es->y = 10 + random() % 400;
1009                 /* assign to first output */
1010                 es->output = output;
1011                 wl_list_insert(&es->compositor->surface_list, &es->link);
1012                 break;
1013         case WLSC_SURFACE_MAP_FULLSCREEN:
1014                 return;
1015         default:
1016                 break;
1017         }
1018
1019         es->saved_x = es->x;
1020         es->saved_y = es->y;
1021         es->x = (output->width - es->width) / 2;
1022         es->y = (output->height - es->height) / 2;
1023         es->fullscreen_output = output;
1024         wlsc_surface_update_matrix(es);
1025         wlsc_surface_damage(es);
1026         es->map_type = WLSC_SURFACE_MAP_FULLSCREEN;
1027 }
1028
1029 static void
1030 surface_damage(struct wl_client *client,
1031                struct wl_surface *surface,
1032                int32_t x, int32_t y, int32_t width, int32_t height)
1033 {
1034         struct wlsc_surface *es = (struct wlsc_surface *) surface;
1035
1036         wlsc_surface_damage_rectangle(es, x, y, width, height);
1037 }
1038
1039 const static struct wl_surface_interface surface_interface = {
1040         surface_destroy,
1041         surface_attach,
1042         surface_map_toplevel,
1043         surface_map_transient,
1044         surface_map_fullscreen,
1045         surface_damage
1046 };
1047
1048 static void
1049 wlsc_input_device_attach(struct wlsc_input_device *device,
1050                          int x, int y, int width, int height)
1051 {
1052         wlsc_surface_damage(device->sprite);
1053
1054         device->hotspot_x = x;
1055         device->hotspot_y = y;
1056
1057         device->sprite->x = device->input_device.x - device->hotspot_x;
1058         device->sprite->y = device->input_device.y - device->hotspot_y;
1059         device->sprite->width = width;
1060         device->sprite->height = height;
1061         wlsc_surface_update_matrix(device->sprite);
1062
1063         wlsc_surface_damage(device->sprite);
1064 }
1065
1066 static void
1067 wlsc_input_device_attach_buffer(struct wlsc_input_device *device,
1068                                 struct wl_buffer *buffer, int x, int y)
1069 {
1070         wlsc_buffer_attach(buffer, &device->sprite->surface);
1071         wlsc_input_device_attach(device, x, y, buffer->width, buffer->height);
1072 }
1073
1074 static void
1075 wlsc_input_device_attach_sprite(struct wlsc_input_device *device,
1076                                 struct wlsc_sprite *sprite, int x, int y)
1077 {
1078         wlsc_sprite_attach(sprite, &device->sprite->surface);
1079         wlsc_input_device_attach(device, x, y, sprite->width, sprite->height);
1080 }
1081
1082 void
1083 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
1084                                     enum wlsc_pointer_type type)
1085 {
1086         struct wlsc_compositor *compositor =
1087                 (struct wlsc_compositor *) device->input_device.compositor;
1088
1089         wlsc_input_device_attach_sprite(device,
1090                                         compositor->pointer_sprites[type],
1091                                         pointer_images[type].hotspot_x,
1092                                         pointer_images[type].hotspot_y);
1093 }
1094
1095 static void
1096 compositor_create_surface(struct wl_client *client,
1097                           struct wl_compositor *compositor, uint32_t id)
1098 {
1099         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
1100         struct wlsc_surface *surface;
1101
1102         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
1103         if (surface == NULL) {
1104                 wl_client_post_no_memory(client);
1105                 return;
1106         }
1107
1108         surface->surface.resource.destroy = destroy_surface;
1109
1110         surface->surface.resource.object.id = id;
1111         surface->surface.resource.object.interface = &wl_surface_interface;
1112         surface->surface.resource.object.implementation =
1113                 (void (**)(void)) &surface_interface;
1114         surface->surface.client = client;
1115
1116         wl_client_add_resource(client, &surface->surface.resource);
1117 }
1118
1119 const static struct wl_compositor_interface compositor_interface = {
1120         compositor_create_surface,
1121 };
1122
1123 static void
1124 wlsc_surface_transform(struct wlsc_surface *surface,
1125                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
1126 {
1127         struct wlsc_vector v = { { x, y, 0, 1 } };
1128
1129         wlsc_matrix_transform(&surface->matrix_inv, &v);
1130         *sx = v.f[0] * surface->width;
1131         *sy = v.f[1] * surface->height;
1132 }
1133
1134 struct wlsc_surface *
1135 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
1136 {
1137         struct wlsc_compositor *ec =
1138                 (struct wlsc_compositor *) device->compositor;
1139         struct wlsc_surface *es;
1140
1141         wl_list_for_each(es, &ec->surface_list, link) {
1142                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
1143                 if (0 <= *sx && *sx < es->width &&
1144                     0 <= *sy && *sy < es->height)
1145                         return es;
1146         }
1147
1148         return NULL;
1149 }
1150
1151
1152 static void
1153 motion_grab_motion(struct wl_grab *grab,
1154                    uint32_t time, int32_t x, int32_t y)
1155 {
1156         struct wlsc_input_device *device =
1157                 (struct wlsc_input_device *) grab->input_device;
1158         struct wlsc_surface *es =
1159                 (struct wlsc_surface *) device->input_device.pointer_focus;
1160         int32_t sx, sy;
1161
1162         wlsc_surface_transform(es, x, y, &sx, &sy);
1163         wl_client_post_event(es->surface.client,
1164                              &device->input_device.object,
1165                              WL_INPUT_DEVICE_MOTION,
1166                              time, x, y, sx, sy);
1167 }
1168
1169 static void
1170 motion_grab_button(struct wl_grab *grab,
1171                    uint32_t time, int32_t button, int32_t state)
1172 {
1173         wl_client_post_event(grab->input_device->pointer_focus->client,
1174                              &grab->input_device->object,
1175                              WL_INPUT_DEVICE_BUTTON,
1176                              time, button, state);
1177 }
1178
1179 static void
1180 motion_grab_end(struct wl_grab *grab, uint32_t time)
1181 {
1182 }
1183
1184 static const struct wl_grab_interface motion_grab_interface = {
1185         motion_grab_motion,
1186         motion_grab_button,
1187         motion_grab_end
1188 };
1189
1190 WL_EXPORT void
1191 wlsc_compositor_wake(struct wlsc_compositor *compositor)
1192 {
1193         if (compositor->idle_inhibit)
1194                 return;
1195
1196         wlsc_compositor_fade(compositor, 0.0);
1197         compositor->state = WLSC_COMPOSITOR_ACTIVE;
1198
1199         wl_event_source_timer_update(compositor->idle_source,
1200                                      option_idle_time * 1000);
1201 }
1202
1203 static void
1204 wlsc_compositor_idle_inhibit(struct wlsc_compositor *compositor)
1205 {
1206         wlsc_compositor_wake(compositor);
1207         compositor->idle_inhibit++;
1208 }
1209
1210 static void
1211 wlsc_compositor_idle_release(struct wlsc_compositor *compositor)
1212 {
1213         compositor->idle_inhibit--;
1214         wlsc_compositor_wake(compositor);
1215 }
1216
1217 static int
1218 idle_handler(void *data)
1219 {
1220         struct wlsc_compositor *compositor = data;
1221
1222         if (compositor->idle_inhibit)
1223                 return 1;
1224
1225         wlsc_compositor_fade(compositor, 1.0);
1226
1227         return 1;
1228 }
1229
1230 void
1231 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
1232 {
1233         struct wlsc_surface *es;
1234         struct wlsc_compositor *ec =
1235                 (struct wlsc_compositor *) device->compositor;
1236         struct wlsc_output *output;
1237         const struct wl_grab_interface *interface;
1238         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1239         int32_t sx, sy;
1240         int x_valid = 0, y_valid = 0;
1241         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
1242
1243         wlsc_compositor_wake(ec);
1244
1245         wl_list_for_each(output, &ec->output_list, link) {
1246                 if (output->x <= x && x <= output->x + output->width)
1247                         x_valid = 1;
1248
1249                 if (output->y <= y && y <= output->y + output->height)
1250                         y_valid = 1;
1251
1252                 /* FIXME: calculate this only on output addition/deletion */
1253                 if (output->x < min_x)
1254                         min_x = output->x;
1255                 if (output->y < min_y)
1256                         min_y = output->y;
1257
1258                 if (output->x + output->width > max_x)
1259                         max_x = output->x + output->width;
1260                 if (output->y + output->height > max_y)
1261                         max_y = output->y + output->height;
1262         }
1263
1264         if (!x_valid) {
1265                 if (x < min_x)
1266                         x = min_x;
1267                 else if (x >= max_x)
1268                         x = max_x;
1269         }
1270         if (!y_valid) {
1271                 if (y < min_y)
1272                         y = min_y;
1273                 else  if (y >= max_y)
1274                         y = max_y;
1275         }
1276
1277         device->x = x;
1278         device->y = y;
1279
1280         if (device->grab) {
1281                 interface = device->grab->interface;
1282                 interface->motion(device->grab, time, x, y);
1283         } else {
1284                 es = pick_surface(device, &sx, &sy);
1285                 wl_input_device_set_pointer_focus(device,
1286                                                   &es->surface,
1287                                                   time, x, y, sx, sy);
1288                 if (es)
1289                         wl_client_post_event(es->surface.client,
1290                                              &device->object,
1291                                              WL_INPUT_DEVICE_MOTION,
1292                                              time, x, y, sx, sy);
1293         }
1294
1295         wlsc_surface_damage(wd->sprite);
1296
1297         wd->sprite->x = device->x - wd->hotspot_x;
1298         wd->sprite->y = device->y - wd->hotspot_y;
1299         wlsc_surface_update_matrix(wd->sprite);
1300
1301         wlsc_surface_damage(wd->sprite);
1302 }
1303
1304 WL_EXPORT void
1305 wlsc_surface_activate(struct wlsc_surface *surface,
1306                       struct wlsc_input_device *device, uint32_t time)
1307 {
1308         wlsc_surface_raise(surface);
1309         if (device->selection)
1310                 wlsc_selection_set_focus(device->selection,
1311                                          &surface->surface, time);
1312
1313         wl_input_device_set_keyboard_focus(&device->input_device,
1314                                            &surface->surface,
1315                                            time);
1316 }
1317
1318 struct wlsc_binding {
1319         uint32_t key;
1320         uint32_t button;
1321         uint32_t modifier;
1322         wlsc_binding_handler_t handler;
1323         void *data;
1324         struct wl_list link;
1325 };
1326
1327 void
1328 notify_button(struct wl_input_device *device,
1329               uint32_t time, int32_t button, int32_t state)
1330 {
1331         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1332         struct wlsc_compositor *compositor =
1333                 (struct wlsc_compositor *) device->compositor;
1334         struct wlsc_binding *b;
1335         struct wlsc_surface *surface =
1336                 (struct wlsc_surface *) device->pointer_focus;
1337
1338         if (state)
1339                 wlsc_compositor_idle_inhibit(compositor);
1340         else
1341                 wlsc_compositor_idle_release(compositor);
1342
1343         if (state && surface && device->grab == NULL) {
1344                 wlsc_surface_activate(surface, wd, time);
1345                 wl_input_device_start_grab(device,
1346                                            &device->motion_grab,
1347                                            button, time);
1348         }
1349
1350         wl_list_for_each(b, &compositor->binding_list, link) {
1351                 if (b->button == button &&
1352                     b->modifier == wd->modifier_state && state) {
1353                         b->handler(&wd->input_device,
1354                                    time, 0, button, state, b->data);
1355                         break;
1356                 }
1357         }
1358
1359         if (device->grab)
1360                 device->grab->interface->button(device->grab, time,
1361                                                 button, state);
1362
1363         if (!state && device->grab && device->grab_button == button)
1364                 wl_input_device_end_grab(device, time);
1365 }
1366
1367 static void
1368 terminate_binding(struct wl_input_device *device, uint32_t time,
1369                   uint32_t key, uint32_t button, uint32_t state, void *data)
1370 {
1371         struct wlsc_compositor *compositor = data;
1372
1373         if (state)
1374                 wl_display_terminate(compositor->wl_display);
1375 }
1376
1377 WL_EXPORT struct wlsc_binding *
1378 wlsc_compositor_add_binding(struct wlsc_compositor *compositor,
1379                             uint32_t key, uint32_t button, uint32_t modifier,
1380                             wlsc_binding_handler_t handler, void *data)
1381 {
1382         struct wlsc_binding *binding;
1383
1384         binding = malloc(sizeof *binding);
1385         if (binding == NULL)
1386                 return NULL;
1387
1388         binding->key = key;
1389         binding->button = button;
1390         binding->modifier = modifier;
1391         binding->handler = handler;
1392         binding->data = data;
1393         wl_list_insert(compositor->binding_list.prev, &binding->link);
1394
1395         return binding;
1396 }
1397
1398 WL_EXPORT void
1399 wlsc_binding_destroy(struct wlsc_binding *binding)
1400 {
1401         wl_list_remove(&binding->link);
1402         free(binding);
1403 }
1404
1405 static void
1406 update_modifier_state(struct wlsc_input_device *device,
1407                       uint32_t key, uint32_t state)
1408 {
1409         uint32_t modifier;
1410
1411         switch (key) {
1412         case KEY_LEFTCTRL:
1413         case KEY_RIGHTCTRL:
1414                 modifier = MODIFIER_CTRL;
1415                 break;
1416
1417         case KEY_LEFTALT:
1418         case KEY_RIGHTALT:
1419                 modifier = MODIFIER_ALT;
1420                 break;
1421
1422         case KEY_LEFTMETA:
1423         case KEY_RIGHTMETA:
1424                 modifier = MODIFIER_SUPER;
1425                 break;
1426
1427         default:
1428                 modifier = 0;
1429                 break;
1430         }
1431
1432         if (state)
1433                 device->modifier_state |= modifier;
1434         else
1435                 device->modifier_state &= ~modifier;
1436 }
1437
1438 void
1439 notify_key(struct wl_input_device *device,
1440            uint32_t time, uint32_t key, uint32_t state)
1441 {
1442         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1443         struct wlsc_compositor *compositor =
1444                 (struct wlsc_compositor *) device->compositor;
1445         uint32_t *k, *end;
1446         struct wlsc_binding *b;
1447
1448         if (state)
1449                 wlsc_compositor_idle_inhibit(compositor);
1450         else
1451                 wlsc_compositor_idle_release(compositor);
1452
1453         wl_list_for_each(b, &compositor->binding_list, link) {
1454                 if (b->key == key &&
1455                     b->modifier == wd->modifier_state) {
1456                         b->handler(&wd->input_device,
1457                                    time, key, 0, state, b->data);
1458                         break;
1459                 }
1460         }
1461
1462         update_modifier_state(wd, key, state);
1463         end = device->keys.data + device->keys.size;
1464         for (k = device->keys.data; k < end; k++) {
1465                 if (*k == key)
1466                         *k = *--end;
1467         }
1468         device->keys.size = (void *) end - device->keys.data;
1469         if (state) {
1470                 k = wl_array_add(&device->keys, sizeof *k);
1471                 *k = key;
1472         }
1473
1474         if (device->keyboard_focus != NULL)
1475                 wl_client_post_event(device->keyboard_focus->client,
1476                                      &device->object,
1477                                      WL_INPUT_DEVICE_KEY, time, key, state);
1478 }
1479
1480 void
1481 notify_pointer_focus(struct wl_input_device *device,
1482                      uint32_t time, struct wlsc_output *output,
1483                      int32_t x, int32_t y)
1484 {
1485         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1486         struct wlsc_compositor *compositor =
1487                 (struct wlsc_compositor *) device->compositor;
1488         struct wlsc_surface *es;
1489         int32_t sx, sy;
1490
1491         if (output) {
1492                 device->x = x;
1493                 device->y = y;
1494                 es = pick_surface(device, &sx, &sy);
1495                 wl_input_device_set_pointer_focus(device,
1496                                                   &es->surface,
1497                                                   time, x, y, sx, sy);
1498
1499                 compositor->focus = 1;
1500
1501                 wd->sprite->x = device->x - wd->hotspot_x;
1502                 wd->sprite->y = device->y - wd->hotspot_y;
1503                 wlsc_surface_update_matrix(wd->sprite);
1504         } else {
1505                 wl_input_device_set_pointer_focus(device, NULL,
1506                                                   time, 0, 0, 0, 0);
1507                 compositor->focus = 0;
1508         }
1509
1510         wlsc_surface_damage(wd->sprite);
1511 }
1512
1513 void
1514 notify_keyboard_focus(struct wl_input_device *device,
1515                       uint32_t time, struct wlsc_output *output,
1516                       struct wl_array *keys)
1517 {
1518         struct wlsc_input_device *wd =
1519                 (struct wlsc_input_device *) device;
1520         struct wlsc_compositor *compositor =
1521                 (struct wlsc_compositor *) device->compositor;
1522         struct wlsc_surface *es;
1523         uint32_t *k, *end;
1524
1525         if (!wl_list_empty(&compositor->surface_list))
1526                 es = container_of(compositor->surface_list.next,
1527                                   struct wlsc_surface, link);
1528         else
1529                 es = NULL;
1530
1531         if (output) {
1532                 wl_array_copy(&wd->input_device.keys, keys);
1533                 wd->modifier_state = 0;
1534                 end = device->keys.data + device->keys.size;
1535                 for (k = device->keys.data; k < end; k++) {
1536                         wlsc_compositor_idle_inhibit(compositor);
1537                         update_modifier_state(wd, *k, 1);
1538                 }
1539
1540                 wl_input_device_set_keyboard_focus(&wd->input_device,
1541                                                    &es->surface, time);
1542         } else {
1543                 end = device->keys.data + device->keys.size;
1544                 for (k = device->keys.data; k < end; k++)
1545                         wlsc_compositor_idle_release(compositor);
1546
1547                 wd->modifier_state = 0;
1548                 wl_input_device_set_keyboard_focus(&wd->input_device,
1549                                                    NULL, time);
1550         }
1551 }
1552
1553
1554 static void
1555 input_device_attach(struct wl_client *client,
1556                     struct wl_input_device *device_base,
1557                     uint32_t time,
1558                     struct wl_buffer *buffer, int32_t x, int32_t y)
1559 {
1560         struct wlsc_input_device *device =
1561                 (struct wlsc_input_device *) device_base;
1562
1563         if (time < device->input_device.pointer_focus_time)
1564                 return;
1565         if (device->input_device.pointer_focus == NULL)
1566                 return;
1567         if (device->input_device.pointer_focus->client != client)
1568                 return;
1569
1570         if (buffer == NULL) {
1571                 wlsc_input_device_set_pointer_image(device,
1572                                                     WLSC_POINTER_LEFT_PTR);
1573                 return;
1574         }
1575
1576         wlsc_input_device_attach_buffer(device, buffer, x, y);
1577 }
1578
1579 const static struct wl_input_device_interface input_device_interface = {
1580         input_device_attach,
1581 };
1582
1583 void
1584 wlsc_input_device_init(struct wlsc_input_device *device,
1585                        struct wlsc_compositor *ec)
1586 {
1587         wl_input_device_init(&device->input_device, &ec->compositor);
1588
1589         device->input_device.object.interface = &wl_input_device_interface;
1590         device->input_device.object.implementation =
1591                 (void (**)(void)) &input_device_interface;
1592         wl_display_add_object(ec->wl_display, &device->input_device.object);
1593         wl_display_add_global(ec->wl_display, &device->input_device.object, NULL);
1594
1595         device->sprite = wlsc_surface_create(ec,
1596                                              device->input_device.x,
1597                                              device->input_device.y, 32, 32);
1598         device->hotspot_x = 16;
1599         device->hotspot_y = 16;
1600         device->modifier_state = 0;
1601
1602         device->input_device.motion_grab.interface = &motion_grab_interface;
1603
1604         wl_list_insert(ec->input_device_list.prev, &device->link);
1605
1606         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1607 }
1608
1609 static void
1610 wlsc_output_post_geometry(struct wl_client *client,
1611                           struct wl_object *global, uint32_t version)
1612 {
1613         struct wlsc_output *output =
1614                 container_of(global, struct wlsc_output, object);
1615
1616         wl_client_post_event(client, global,
1617                              WL_OUTPUT_GEOMETRY,
1618                              output->x, output->y,
1619                              output->width, output->height);
1620 }
1621
1622 static const char vertex_shader[] =
1623         "uniform mat4 proj;\n"
1624         "attribute vec2 position;\n"
1625         "attribute vec2 texcoord;\n"
1626         "varying vec2 v_texcoord;\n"
1627         "void main()\n"
1628         "{\n"
1629         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1630         "   v_texcoord = texcoord;\n"
1631         "}\n";
1632
1633 static const char texture_fragment_shader[] =
1634         "precision mediump float;\n"
1635         "varying vec2 v_texcoord;\n"
1636         "uniform sampler2D tex;\n"
1637         "void main()\n"
1638         "{\n"
1639         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1640         "}\n";
1641
1642 static const char solid_fragment_shader[] =
1643         "precision mediump float;\n"
1644         "varying vec2 v_texcoord;\n"
1645         "uniform vec4 color;\n"
1646         "void main()\n"
1647         "{\n"
1648         "   gl_FragColor = color\n;"
1649         "}\n";
1650
1651 static int
1652 compile_shader(GLenum type, const char *source)
1653 {
1654         GLuint s;
1655         char msg[512];
1656         GLint status;
1657
1658         s = glCreateShader(type);
1659         glShaderSource(s, 1, &source, NULL);
1660         glCompileShader(s);
1661         glGetShaderiv(s, GL_COMPILE_STATUS, &status);
1662         if (!status) {
1663                 glGetShaderInfoLog(s, sizeof msg, NULL, msg);
1664                 fprintf(stderr, "shader info: %s\n", msg);
1665                 return GL_NONE;
1666         }
1667
1668         return s;
1669 }
1670
1671 static int
1672 wlsc_shader_init(struct wlsc_shader *shader,
1673                  const char *vertex_source, const char *fragment_source)
1674 {
1675         char msg[512];
1676         GLint status;
1677
1678         shader->vertex_shader =
1679                 compile_shader(GL_VERTEX_SHADER, vertex_source);
1680         shader->fragment_shader =
1681                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1682
1683         shader->program = glCreateProgram();
1684         glAttachShader(shader->program, shader->vertex_shader);
1685         glAttachShader(shader->program, shader->fragment_shader);
1686         glBindAttribLocation(shader->program, 0, "position");
1687         glBindAttribLocation(shader->program, 1, "texcoord");
1688
1689         glLinkProgram(shader->program);
1690         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1691         if (!status) {
1692                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1693                 fprintf(stderr, "link info: %s\n", msg);
1694                 return -1;
1695         }
1696
1697         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1698         shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
1699
1700         return 0;
1701 }
1702
1703 static int
1704 init_solid_shader(struct wlsc_shader *shader,
1705                   GLuint vertex_shader, const char *fragment_source)
1706 {
1707         GLint status;
1708         char msg[512];
1709
1710         shader->vertex_shader = vertex_shader;
1711         shader->fragment_shader =
1712                 compile_shader(GL_FRAGMENT_SHADER, fragment_source);
1713
1714         shader->program = glCreateProgram();
1715         glAttachShader(shader->program, shader->vertex_shader);
1716         glAttachShader(shader->program, shader->fragment_shader);
1717         glBindAttribLocation(shader->program, 0, "position");
1718         glBindAttribLocation(shader->program, 1, "texcoord");
1719
1720         glLinkProgram(shader->program);
1721         glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
1722         if (!status) {
1723                 glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
1724                 fprintf(stderr, "link info: %s\n", msg);
1725                 return -1;
1726         }
1727
1728         shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
1729         shader->color_uniform = glGetUniformLocation(shader->program, "color");
1730
1731         return 0;
1732 }
1733
1734 void
1735 wlsc_output_destroy(struct wlsc_output *output)
1736 {
1737         destroy_surface(&output->background->surface.resource, NULL);
1738 }
1739
1740 void
1741 wlsc_output_move(struct wlsc_output *output, int x, int y)
1742 {
1743         struct wlsc_compositor *c = output->compositor;
1744         int flip;
1745
1746         output->x = x;
1747         output->y = y;
1748
1749         if (output->background) {
1750                 output->background->x = x;
1751                 output->background->y = y;
1752                 wlsc_surface_update_matrix(output->background);
1753         }
1754
1755         pixman_region32_init(&output->previous_damage_region);
1756
1757         wlsc_matrix_init(&output->matrix);
1758         wlsc_matrix_translate(&output->matrix,
1759                               -output->x - output->width / 2.0,
1760                               -output->y - output->height / 2.0, 0);
1761
1762         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1763         wlsc_matrix_scale(&output->matrix,
1764                           2.0 / output->width,
1765                           flip * 2.0 / output->height, 1);
1766
1767         pixman_region32_union_rect(&c->damage_region,
1768                                    &c->damage_region,
1769                                    x, y, output->width, output->height);
1770 }
1771
1772 void
1773 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1774                  int x, int y, int width, int height, uint32_t flags)
1775 {
1776         output->compositor = c;
1777         output->x = x;
1778         output->y = y;
1779         output->width = width;
1780         output->height = height;
1781
1782         output->background =
1783                 background_create(output, option_background);
1784
1785         output->flags = flags;
1786         output->finished = 1;
1787         wlsc_output_move(output, x, y);
1788
1789         output->object.interface = &wl_output_interface;
1790         wl_display_add_object(c->wl_display, &output->object);
1791         wl_display_add_global(c->wl_display, &output->object,
1792                               wlsc_output_post_geometry);
1793 }
1794
1795 static void
1796 shm_buffer_created(struct wl_buffer *buffer)
1797 {
1798         struct wl_list *surfaces_attached_to;
1799
1800         surfaces_attached_to = malloc(sizeof *surfaces_attached_to);
1801         if (!surfaces_attached_to) {
1802                 buffer->user_data = NULL;
1803                 return;
1804         }
1805
1806         wl_list_init(surfaces_attached_to);
1807
1808         buffer->user_data = surfaces_attached_to;
1809 }
1810
1811 static void
1812 shm_buffer_damaged(struct wl_buffer *buffer,
1813                    int32_t x, int32_t y, int32_t width, int32_t height)
1814 {
1815         struct wl_list *surfaces_attached_to = buffer->user_data;
1816         struct wlsc_surface *es;
1817         GLsizei tex_width = wl_shm_buffer_get_stride(buffer) / 4;
1818
1819         wl_list_for_each(es, surfaces_attached_to, buffer_link) {
1820                 glBindTexture(GL_TEXTURE_2D, es->texture);
1821                 glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
1822                              tex_width, buffer->height, 0,
1823                              GL_BGRA_EXT, GL_UNSIGNED_BYTE,
1824                              wl_shm_buffer_get_data(buffer));
1825                 /* Hmm, should use glTexSubImage2D() here but GLES2 doesn't
1826                  * support any unpack attributes except GL_UNPACK_ALIGNMENT. */
1827         }
1828 }
1829
1830 static void
1831 shm_buffer_destroyed(struct wl_buffer *buffer)
1832 {
1833         struct wl_list *surfaces_attached_to = buffer->user_data;
1834         struct wlsc_surface *es, *next;
1835
1836         wl_list_for_each_safe(es, next, surfaces_attached_to, buffer_link) {
1837                 es->buffer = NULL;
1838                 wl_list_remove(&es->buffer_link);
1839         }
1840
1841         free(surfaces_attached_to);
1842 }
1843
1844 const static struct wl_shm_callbacks shm_callbacks = {
1845         shm_buffer_created,
1846         shm_buffer_damaged,
1847         shm_buffer_destroyed
1848 };
1849
1850 int
1851 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1852 {
1853         struct wl_event_loop *loop;
1854         const char *extensions;
1855
1856         ec->wl_display = display;
1857
1858         wl_compositor_init(&ec->compositor, &compositor_interface, display);
1859
1860         ec->shm = wl_shm_init(display, &shm_callbacks);
1861
1862         ec->image_target_texture_2d =
1863                 (void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
1864         ec->image_target_renderbuffer_storage = (void *)
1865                 eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
1866         ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
1867         ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
1868         ec->bind_display =
1869                 (void *) eglGetProcAddress("eglBindWaylandDisplayWL");
1870         ec->unbind_display =
1871                 (void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
1872
1873         extensions = (const char *) glGetString(GL_EXTENSIONS);
1874         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
1875                 fprintf(stderr,
1876                         "GL_EXT_texture_format_BGRA8888 not available\n");
1877                 return -1;
1878         }
1879
1880         extensions =
1881                 (const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
1882         if (strstr(extensions, "EGL_WL_bind_wayland_display"))
1883                 ec->has_bind_display = 1;
1884         if (ec->has_bind_display)
1885                 ec->bind_display(ec->display, ec->wl_display);
1886
1887         wl_list_init(&ec->surface_list);
1888         wl_list_init(&ec->input_device_list);
1889         wl_list_init(&ec->output_list);
1890         wl_list_init(&ec->binding_list);
1891         wl_list_init(&ec->animation_list);
1892         wlsc_tweener_init(&ec->fade.tweener, 0.8, 0.0, 0.0);
1893         ec->fade.animation.frame = fade_frame;
1894         wl_list_init(&ec->fade.animation.link);
1895
1896         wlsc_compositor_add_binding(ec, KEY_BACKSPACE, 0,
1897                                     MODIFIER_CTRL | MODIFIER_ALT,
1898                                     terminate_binding, ec);
1899
1900         create_pointer_images(ec);
1901
1902         screenshooter_create(ec);
1903
1904         glActiveTexture(GL_TEXTURE0);
1905
1906         if (wlsc_shader_init(&ec->texture_shader,
1907                              vertex_shader, texture_fragment_shader) < 0)
1908                 return -1;
1909         if (init_solid_shader(&ec->solid_shader,
1910                               ec->texture_shader.vertex_shader,
1911                               solid_fragment_shader) < 0)
1912                 return -1;
1913
1914         loop = wl_display_get_event_loop(ec->wl_display);
1915         ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
1916         wl_event_source_timer_update(ec->idle_source, option_idle_time * 1000);
1917
1918         ec->timer_source = wl_event_loop_add_timer(loop, repaint, ec);
1919         pixman_region32_init(&ec->damage_region);
1920         wlsc_compositor_schedule_repaint(ec);
1921
1922         return 0;
1923 }
1924
1925 static int on_term_signal(int signal_number, void *data)
1926 {
1927         struct wlsc_compositor *ec = data;
1928
1929         wl_display_terminate(ec->wl_display);
1930
1931         return 1;
1932 }
1933
1934 int main(int argc, char *argv[])
1935 {
1936         struct wl_display *display;
1937         struct wlsc_compositor *ec;
1938         struct wl_event_loop *loop;
1939         int width, height, o;
1940         void *shell_module;
1941         int (*shell_init)(struct wlsc_compositor *ec);
1942         char *p;
1943
1944         static const char opts[] = "b:c:g:S:i:s:";
1945         static const struct option longopts[ ] = {
1946                 { "background", 1, NULL, 'b' },
1947                 { "connector", 1, NULL, 'c' },
1948                 { "geometry", 1, NULL, 'g' },
1949                 { "socket", 1, NULL, 'S' },
1950                 { "idle-time", 1, NULL, 'i' },
1951                 { "shell", 1, NULL, 's' },
1952                 { NULL, }
1953         };
1954
1955         g_type_init(); /* GdkPixbuf needs this, it seems. */
1956
1957         width = 1024;
1958         height = 640;
1959
1960         while (o = getopt_long(argc, argv, opts, longopts, &o), o > 0) {
1961                 switch (o) {
1962                 case 'b':
1963                         option_background = optarg;
1964                         break;
1965                 case 'c':
1966                         option_connector = strtol(optarg, &p, 0);
1967                         if (*p != '\0') {
1968                                 fprintf(stderr,
1969                                         "invalid connection option: %s\n",
1970                                         optarg);
1971                                 exit(EXIT_FAILURE);
1972                         }
1973                         break;
1974                 case 'g':
1975                         if (sscanf(optarg, "%dx%d", &width, &height) != 2) {
1976                                 fprintf(stderr,
1977                                         "invalid geometry option: %s\n",
1978                                         optarg);
1979                                 exit(EXIT_FAILURE);
1980                         }
1981                         break;
1982                 case 'S':
1983                         option_socket_name = optarg;
1984                         break;
1985                 case 'i':
1986                         option_idle_time = strtol(optarg, &p, 0);
1987                         if (*p != '\0') {
1988                                 fprintf(stderr,
1989                                         "invalid idle time option: %s\n",
1990                                         optarg);
1991                                 exit(EXIT_FAILURE);
1992                         }
1993                         break;
1994                 case 's':
1995                         option_shell = optarg;
1996                         break;
1997                 }
1998         }
1999
2000         display = wl_display_create();
2001
2002         ec = NULL;
2003
2004         shell_init = desktop_shell_init;
2005         if (option_shell) {
2006                 shell_module = dlopen(option_shell, RTLD_LAZY);
2007                 if (!shell_module) {
2008                         fprintf(stderr, "failed to load shell module: %m\n");
2009                         exit(EXIT_FAILURE);
2010                 }
2011                 shell_init = dlsym(shell_module, "shell_init");
2012                 if (!shell_init) {
2013                         fprintf(stderr,
2014                                 "failed to lookup shell init function: %m\n");
2015                         exit(EXIT_FAILURE);
2016                 }
2017         }
2018
2019 #if BUILD_WAYLAND_COMPOSITOR
2020         if (getenv("WAYLAND_DISPLAY"))
2021                 ec = wayland_compositor_create(display, width, height);
2022 #endif
2023
2024 #if BUILD_X11_COMPOSITOR
2025         if (ec == NULL && getenv("DISPLAY"))
2026                 ec = x11_compositor_create(display, width, height);
2027 #endif
2028
2029 #if BUILD_OPENWFD_COMPOSITOR
2030         if (ec == NULL && getenv("OPENWFD"))
2031                 ec = wfd_compositor_create(display, option_connector);
2032 #endif
2033
2034 #if BUILD_DRM_COMPOSITOR
2035         if (ec == NULL)
2036                 ec = drm_compositor_create(display, option_connector);
2037 #endif
2038
2039         if (ec == NULL) {
2040                 fprintf(stderr, "failed to create compositor\n");
2041                 exit(EXIT_FAILURE);
2042         }
2043
2044         if (shell_init(ec) < 0)
2045                 exit(EXIT_FAILURE);
2046
2047         if (wl_display_add_socket(display, option_socket_name)) {
2048                 fprintf(stderr, "failed to add socket: %m\n");
2049                 exit(EXIT_FAILURE);
2050         }
2051
2052         loop = wl_display_get_event_loop(ec->wl_display);
2053         wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
2054         wl_event_loop_add_signal(loop, SIGINT, on_term_signal, ec);
2055
2056         wl_display_run(display);
2057
2058         if (ec->has_bind_display)
2059                 ec->unbind_display(ec->display, display);
2060         wl_display_destroy(display);
2061
2062         ec->destroy(ec);
2063
2064         return 0;
2065 }