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
  36 #include "wayland-server.h"
  37 #include "compositor.h"
  38
  39 struct wlsc_switcher {
  40         struct wlsc_compositor *compositor;
  41         struct wlsc_surface *current;
  42         struct wl_listener listener;
  43 };
  44
  45 /* The plan here is to generate a random anonymous socket name and
  46  * advertise that through a service on the session dbus.
  47  */
  48 static const char *option_socket_name = NULL;
  49 static const char *option_background = "background.jpg";
  50 static const char *option_geometry = "1024x640";
  51 static int option_connector = 0;
  52
  53 static const GOptionEntry option_entries[] = {
  54         { "background", 'b', 0, G_OPTION_ARG_STRING,
  55           &option_background, "Background image" },
  56         { "connector", 'c', 0, G_OPTION_ARG_INT,
  57           &option_connector, "KMS connector" },
  58         { "geometry", 'g', 0, G_OPTION_ARG_STRING,
  59           &option_geometry, "Geometry" },
  60         { "socket", 's', 0, G_OPTION_ARG_STRING,
  61           &option_socket_name, "Socket Name" },
  62         { NULL }
  63 };
  64
  65 static void
  66 wlsc_matrix_init(struct wlsc_matrix *matrix)
  67 {
  68         static const struct wlsc_matrix identity = {
  69                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  0, 0, 0, 1 }
  70         };
  71
  72         memcpy(matrix, &identity, sizeof identity);
  73 }
  74
  75 static void
  76 wlsc_matrix_multiply(struct wlsc_matrix *m, const struct wlsc_matrix *n)
  77 {
  78         struct wlsc_matrix tmp;
  79         const GLfloat *row, *column;
  80         div_t d;
  81         int i, j;
  82
  83         for (i = 0; i < 16; i++) {
  84                 tmp.d[i] = 0;
  85                 d = div(i, 4);
  86                 row = m->d + d.quot * 4;
  87                 column = n->d + d.rem;
  88                 for (j = 0; j < 4; j++)
  89                         tmp.d[i] += row[j] * column[j * 4];
  90         }
  91         memcpy(m, &tmp, sizeof tmp);
  92 }
  93
  94 static void
  95 wlsc_matrix_translate(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
  96 {
  97         struct wlsc_matrix translate = {
  98                 { 1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  x, y, z, 1 }
  99         };
 100
 101         wlsc_matrix_multiply(matrix, &translate);
 102 }
 103
 104 static void
 105 wlsc_matrix_scale(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
 106 {
 107         struct wlsc_matrix scale = {
 108                 { x, 0, 0, 0,  0, y, 0, 0,  0, 0, z, 0,  0, 0, 0, 1 }
 109         };
 110
 111         wlsc_matrix_multiply(matrix, &scale);
 112 }
 113
 114 static void
 115 wlsc_matrix_transform(struct wlsc_matrix *matrix, struct wlsc_vector *v)
 116 {
 117         int i, j;
 118         struct wlsc_vector t;
 119
 120         for (i = 0; i < 4; i++) {
 121                 t.f[i] = 0;
 122                 for (j = 0; j < 4; j++)
 123                         t.f[i] += v->f[j] * matrix->d[i + j * 4];
 124         }
 125
 126         *v = t;
 127 }
 128
 129 static struct wlsc_surface *
 130 wlsc_surface_create(struct wlsc_compositor *compositor,
 131                     int32_t x, int32_t y, int32_t width, int32_t height)
 132 {
 133         struct wlsc_surface *surface;
 134
 135         surface = malloc(sizeof *surface);
 136         if (surface == NULL)
 137                 return NULL;
 138
 139         wl_list_init(&surface->surface.destroy_listener_list);
 140         wl_list_init(&surface->link);
 141         surface->map_type = WLSC_SURFACE_MAP_UNMAPPED;
 142
 143         glGenTextures(1, &surface->texture);
 144         glBindTexture(GL_TEXTURE_2D, surface->texture);
 145         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 146         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 147         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 148         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 149
 150         surface->compositor = compositor;
 151         surface->visual = NULL;
 152         surface->x = x;
 153         surface->y = y;
 154         surface->width = width;
 155         surface->height = height;
 156         wlsc_matrix_init(&surface->matrix);
 157         wlsc_matrix_scale(&surface->matrix, width, height, 1);
 158         wlsc_matrix_translate(&surface->matrix, x, y, 0);
 159
 160         wlsc_matrix_init(&surface->matrix_inv);
 161         wlsc_matrix_translate(&surface->matrix_inv, -x, -y, 0);
 162         wlsc_matrix_scale(&surface->matrix_inv, 1.0 / width, 1.0 / height, 1);
 163
 164         return surface;
 165 }
 166
 167 void
 168 wlsc_surface_damage_rectangle(struct wlsc_surface *surface,
 169                               int32_t x, int32_t y,
 170                               int32_t width, int32_t height)
 171 {
 172         struct wlsc_compositor *compositor = surface->compositor;
 173
 174         pixman_region32_union_rect(&compositor->damage_region,
 175                                    &compositor->damage_region,
 176                                    surface->x + x, surface->y + y,
 177                                    width, height);
 178         wlsc_compositor_schedule_repaint(compositor);
 179 }
 180
 181 void
 182 wlsc_surface_damage(struct wlsc_surface *surface)
 183 {
 184         wlsc_surface_damage_rectangle(surface, 0, 0,
 185                                       surface->width, surface->height);
 186 }
 187
 188 uint32_t
 189 get_time(void)
 190 {
 191         struct timeval tv;
 192
 193         gettimeofday(&tv, NULL);
 194
 195         return tv.tv_sec * 1000 + tv.tv_usec / 1000;
 196 }
 197
 198 static void
 199 destroy_surface(struct wl_resource *resource, struct wl_client *client)
 200 {
 201         struct wlsc_surface *surface =
 202                 container_of(resource, struct wlsc_surface, surface.resource);
 203         struct wl_listener *l, *next;
 204         uint32_t time;
 205
 206         wlsc_surface_damage(surface);
 207
 208         wl_list_remove(&surface->link);
 209         glDeleteTextures(1, &surface->texture);
 210
 211         time = get_time();
 212         wl_list_for_each_safe(l, next,
 213                               &surface->surface.destroy_listener_list, link)
 214                 l->func(l, &surface->surface, time);
 215
 216         free(surface);
 217 }
 218
 219 uint32_t *
 220 wlsc_load_image(const char *filename, int width, int height)
 221 {
 222         GdkPixbuf *pixbuf;
 223         GError *error = NULL;
 224         int stride, i, n_channels;
 225         unsigned char *pixels, *end, *argb_pixels, *s, *d;
 226
 227         pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
 228                                                    width, height,
 229                                                    FALSE, &error);
 230         if (error != NULL) {
 231                 fprintf(stderr, "failed to load image: %s\n", error->message);
 232                 g_error_free(error);
 233                 return NULL;
 234         }
 235
 236         stride = gdk_pixbuf_get_rowstride(pixbuf);
 237         pixels = gdk_pixbuf_get_pixels(pixbuf);
 238         n_channels = gdk_pixbuf_get_n_channels(pixbuf);
 239
 240         argb_pixels = malloc (height * width * 4);
 241         if (argb_pixels == NULL) {
 242                 g_object_unref(pixbuf);
 243                 return NULL;
 244         }
 245
 246         if (n_channels == 4) {
 247                 for (i = 0; i < height; i++) {
 248                         s = pixels + i * stride;
 249                         end = s + width * 4;
 250                         d = argb_pixels + i * width * 4;
 251                         while (s < end) {
 252                                 unsigned int t;
 253
 254 #define MULT(_d,c,a,t) \
 255         do { t = c * a + 0x7f; _d = ((t >> 8) + t) >> 8; } while (0)
 256
 257                                 MULT(d[0], s[2], s[3], t);
 258                                 MULT(d[1], s[1], s[3], t);
 259                                 MULT(d[2], s[0], s[3], t);
 260                                 d[3] = s[3];
 261                                 s += 4;
 262                                 d += 4;
 263                         }
 264                 }
 265         } else if (n_channels == 3) {
 266                 for (i = 0; i < height; i++) {
 267                         s = pixels + i * stride;
 268                         end = s + width * 3;
 269                         d = argb_pixels + i * width * 4;
 270                         while (s < end) {
 271                                 d[0] = s[2];
 272                                 d[1] = s[1];
 273                                 d[2] = s[0];
 274                                 d[3] = 0xff;
 275                                 s += 3;
 276                                 d += 4;
 277                         }
 278                 }
 279         }
 280
 281         g_object_unref(pixbuf);
 282
 283         return (uint32_t *) argb_pixels;
 284 }
 285
 286 static void
 287 wlsc_buffer_attach(struct wl_buffer *buffer, struct wl_surface *surface)
 288 {
 289         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 290         struct wlsc_compositor *ec = es->compositor;
 291         EGLImageKHR *image;
 292
 293         if (buffer->attach) {
 294                 buffer->attach(buffer, surface);
 295         } else {
 296                 image = eglCreateImageKHR(ec->display, ec->context,
 297                                           EGL_WAYLAND_BUFFER_WL,
 298                                           buffer, NULL);
 299
 300                 glBindTexture(GL_TEXTURE_2D, es->texture);
 301                 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
 302                 es->visual = buffer->visual;
 303                 eglDestroyImageKHR(ec->display, image);
 304         }
 305 }
 306
 307 static struct wl_buffer *
 308 create_buffer_from_png(struct wlsc_compositor *ec,
 309                        const char *filename, int width, int height)
 310 {
 311         uint32_t *pixels;
 312         struct wl_buffer *buffer;
 313
 314         pixels = wlsc_load_image(filename, width, height);
 315         if(pixels == NULL)
 316             return NULL;
 317
 318         buffer = ec->create_buffer(ec, width, height, width * 4,
 319                                    &ec->compositor.premultiplied_argb_visual,
 320                                    pixels);
 321
 322         free(pixels);
 323
 324         return buffer;
 325 }
 326
 327 static const struct {
 328         const char *filename;
 329         int hotspot_x, hotspot_y;
 330 } pointer_images[] = {
 331         { DATADIR "/wayland/bottom_left_corner.png",     6, 30 },
 332         { DATADIR "/wayland/bottom_right_corner.png",   28, 28 },
 333         { DATADIR "/wayland/bottom_side.png",           16, 20 },
 334         { DATADIR "/wayland/grabbing.png",              20, 17 },
 335         { DATADIR "/wayland/left_ptr.png",              10,  5 },
 336         { DATADIR "/wayland/left_side.png",             10, 20 },
 337         { DATADIR "/wayland/right_side.png",            30, 19 },
 338         { DATADIR "/wayland/top_left_corner.png",        8,  8 },
 339         { DATADIR "/wayland/top_right_corner.png",      26,  8 },
 340         { DATADIR "/wayland/top_side.png",              18,  8 },
 341         { DATADIR "/wayland/xterm.png",                 15, 15 }
 342 };
 343
 344 static void
 345 create_pointer_images(struct wlsc_compositor *ec)
 346 {
 347         int i, count;
 348         const int width = 32, height = 32;
 349
 350         count = ARRAY_LENGTH(pointer_images);
 351         ec->pointer_buffers = malloc(count * sizeof *ec->pointer_buffers);
 352         for (i = 0; i < count; i++) {
 353                 ec->pointer_buffers[i] =
 354                         create_buffer_from_png(ec,
 355                                                pointer_images[i].filename,
 356                                                width, height);
 357         }
 358 }
 359
 360 static struct wlsc_surface *
 361 background_create(struct wlsc_output *output, const char *filename)
 362 {
 363         struct wlsc_surface *background;
 364         struct wl_buffer *buffer;
 365
 366         background = wlsc_surface_create(output->compositor,
 367                                          output->x, output->y,
 368                                          output->width, output->height);
 369         if (background == NULL)
 370                 return NULL;
 371
 372         buffer = create_buffer_from_png(output->compositor,
 373                                         filename,
 374                                         output->width, output->height);
 375         if (buffer == NULL) {
 376                 free(background);
 377                 return NULL;
 378         }
 379
 380         wlsc_buffer_attach(buffer, &background->surface);
 381
 382         return background;
 383 }
 384
 385 static void
 386 wlsc_surface_draw(struct wlsc_surface *es,
 387                   struct wlsc_output *output, pixman_region32_t *clip)
 388 {
 389         struct wlsc_compositor *ec = es->compositor;
 390         GLfloat *v, inv_width, inv_height;
 391         unsigned int *p;
 392         pixman_region32_t repaint;
 393         pixman_box32_t *rectangles;
 394         int i, n;
 395
 396         pixman_region32_init_rect(&repaint,
 397                                   es->x, es->y, es->width, es->height);
 398         pixman_region32_intersect(&repaint, &repaint, clip);
 399         if (!pixman_region32_not_empty(&repaint))
 400                 return;
 401
 402         if (es->visual == &ec->compositor.argb_visual) {
 403                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 404                 glEnable(GL_BLEND);
 405         } else if (es->visual == &ec->compositor.premultiplied_argb_visual) {
 406                 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 407                 glEnable(GL_BLEND);
 408         } else {
 409                 glDisable(GL_BLEND);
 410         }
 411
 412         rectangles = pixman_region32_rectangles(&repaint, &n);
 413         v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
 414         p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
 415         inv_width = 1.0 / es->width;
 416         inv_height = 1.0 / es->height;
 417         for (i = 0; i < n; i++, v += 16, p += 6) {
 418                 v[ 0] = rectangles[i].x1;
 419                 v[ 1] = rectangles[i].y1;
 420                 v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
 421                 v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
 422
 423                 v[ 4] = rectangles[i].x1;
 424                 v[ 5] = rectangles[i].y2;
 425                 v[ 6] = v[ 2];
 426                 v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
 427
 428                 v[ 8] = rectangles[i].x2;
 429                 v[ 9] = rectangles[i].y1;
 430                 v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
 431                 v[11] = v[ 3];
 432
 433                 v[12] = rectangles[i].x2;
 434                 v[13] = rectangles[i].y2;
 435                 v[14] = v[10];
 436                 v[15] = v[ 7];
 437
 438                 p[0] = i * 4 + 0;
 439                 p[1] = i * 4 + 1;
 440                 p[2] = i * 4 + 2;
 441                 p[3] = i * 4 + 2;
 442                 p[4] = i * 4 + 1;
 443                 p[5] = i * 4 + 3;
 444         }
 445
 446         glBindTexture(GL_TEXTURE_2D, es->texture);
 447         v = ec->vertices.data;
 448         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 449         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 450         glEnableVertexAttribArray(0);
 451         glEnableVertexAttribArray(1);
 452         glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
 453
 454         ec->vertices.size = 0;
 455         ec->indices.size = 0;
 456         pixman_region32_fini(&repaint);
 457 }
 458
 459 static void
 460 wlsc_surface_raise(struct wlsc_surface *surface)
 461 {
 462         struct wlsc_compositor *compositor = surface->compositor;
 463
 464         wl_list_remove(&surface->link);
 465         wl_list_insert(&compositor->surface_list, &surface->link);
 466 }
 467
 468 void
 469 wlsc_surface_update_matrix(struct wlsc_surface *es)
 470 {
 471         wlsc_matrix_init(&es->matrix);
 472         wlsc_matrix_scale(&es->matrix, es->width, es->height, 1);
 473         wlsc_matrix_translate(&es->matrix, es->x, es->y, 0);
 474
 475         wlsc_matrix_init(&es->matrix_inv);
 476         wlsc_matrix_translate(&es->matrix_inv, -es->x, -es->y, 0);
 477         wlsc_matrix_scale(&es->matrix_inv,
 478                           1.0 / es->width, 1.0 / es->height, 1);
 479 }
 480
 481 void
 482 wlsc_compositor_finish_frame(struct wlsc_compositor *compositor, int msecs)
 483 {
 484         wl_display_post_frame(compositor->wl_display, msecs);
 485         wl_event_source_timer_update(compositor->timer_source, 5);
 486         compositor->repaint_on_timeout = 1;
 487 }
 488
 489 static void
 490 wlsc_output_repaint(struct wlsc_output *output)
 491 {
 492         struct wlsc_compositor *ec = output->compositor;
 493         struct wlsc_surface *es;
 494         struct wlsc_input_device *eid;
 495         pixman_region32_t new_damage, total_damage, repaint;
 496
 497         output->prepare_render(output);
 498
 499         glViewport(0, 0, output->width, output->height);
 500
 501         glUniformMatrix4fv(ec->proj_uniform, 1, GL_FALSE, output->matrix.d);
 502         glUniform1i(ec->tex_uniform, 0);
 503
 504         pixman_region32_init(&new_damage);
 505         pixman_region32_init(&total_damage);
 506         pixman_region32_intersect_rect(&new_damage,
 507                                        &ec->damage_region,
 508                                        output->x, output->y,
 509                                        output->width, output->height);
 510         pixman_region32_subtract(&ec->damage_region,
 511                                  &ec->damage_region, &new_damage);
 512         pixman_region32_union(&total_damage, &new_damage,
 513                               &output->previous_damage_region);
 514         pixman_region32_copy(&output->previous_damage_region, &new_damage);
 515
 516         es = container_of(ec->surface_list.next, struct wlsc_surface, link);
 517         if (es->map_type == WLSC_SURFACE_MAP_FULLSCREEN &&
 518             es->fullscreen_output == output) {
 519                 if (es->width < output->width || es->height < output->height)
 520                         glClear(GL_COLOR_BUFFER_BIT);
 521                 wlsc_surface_draw(es, output, &total_damage);
 522         } else {
 523                 wl_list_for_each(es, &ec->surface_list, link) {
 524                         if (es->visual != &ec->compositor.rgb_visual)
 525                                 continue;
 526
 527                         pixman_region32_init_rect(&repaint,
 528                                                   es->x, es->y,
 529                                                   es->width, es->height);
 530                         wlsc_surface_draw(es, output, &total_damage);
 531                         pixman_region32_subtract(&total_damage,
 532                                                  &total_damage, &repaint);
 533                 }
 534
 535                 if (output->background)
 536                         wlsc_surface_draw(output->background,
 537                                           output, &total_damage);
 538                 else
 539                         glClear(GL_COLOR_BUFFER_BIT);
 540
 541                 wl_list_for_each_reverse(es, &ec->surface_list, link) {
 542                         if (ec->switcher &&
 543                             ec->switcher->current == es)
 544                                 continue;
 545
 546                         if (es->visual == &ec->compositor.rgb_visual) {
 547                                 pixman_region32_union_rect(&total_damage,
 548                                                            &total_damage,
 549                                                            es->x, es->y,
 550                                                            es->width, es->height);
 551                                 continue;
 552                         }
 553
 554                         wlsc_surface_draw(es, output, &total_damage);
 555                 }
 556         }
 557
 558         if (ec->switcher)
 559                 wlsc_surface_draw(ec->switcher->current,
 560                                   output, &total_damage);
 561
 562         if (ec->focus)
 563                 wl_list_for_each(eid, &ec->input_device_list, link)
 564                         wlsc_surface_draw(eid->sprite, output, &total_damage);
 565 }
 566
 567 static void
 568 repaint(void *data)
 569 {
 570         struct wlsc_compositor *ec = data;
 571         struct wlsc_output *output;
 572
 573         if (!ec->repaint_needed) {
 574                 ec->repaint_on_timeout = 0;
 575                 return;
 576         }
 577
 578         wl_list_for_each(output, &ec->output_list, link)
 579                 wlsc_output_repaint(output);
 580
 581         ec->present(ec);
 582
 583         ec->repaint_needed = 0;
 584 }
 585
 586 void
 587 wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
 588 {
 589         compositor->repaint_needed = 1;
 590         if (compositor->repaint_on_timeout)
 591                 return;
 592
 593         wl_event_source_timer_update(compositor->timer_source, 1);
 594         compositor->repaint_on_timeout = 1;
 595 }
 596
 597 static void
 598 surface_destroy(struct wl_client *client,
 599                 struct wl_surface *surface)
 600 {
 601         wl_resource_destroy(&surface->resource, client);
 602 }
 603
 604 static void
 605 surface_attach(struct wl_client *client,
 606                struct wl_surface *surface, struct wl_buffer *buffer,
 607                int32_t x, int32_t y)
 608 {
 609         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 610
 611         /* FIXME: This damages the entire old surface, but we should
 612          * really just damage the part that's no longer covered by the
 613          * surface.  Anything covered by the new surface will be
 614          * damaged by the client. */
 615         wlsc_surface_damage(es);
 616
 617         wlsc_buffer_attach(buffer, surface);
 618
 619         es->buffer = buffer;
 620         es->x += x;
 621         es->y += y;
 622         es->width = buffer->width;
 623         es->height = buffer->height;
 624         wlsc_surface_update_matrix(es);
 625 }
 626
 627 static void
 628 surface_map_toplevel(struct wl_client *client,
 629                      struct wl_surface *surface)
 630 {
 631         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 632
 633         switch (es->map_type) {
 634         case WLSC_SURFACE_MAP_UNMAPPED:
 635                 es->x = 10 + random() % 400;
 636                 es->y = 10 + random() % 400;
 637                 wlsc_surface_update_matrix(es);
 638                 wl_list_insert(&es->compositor->surface_list, &es->link);
 639                 break;
 640         case WLSC_SURFACE_MAP_TOPLEVEL:
 641                 return;
 642         case WLSC_SURFACE_MAP_FULLSCREEN:
 643                 es->fullscreen_output = NULL;
 644                 es->x = es->saved_x;
 645                 es->y = es->saved_y;
 646                 wlsc_surface_update_matrix(es);
 647                 break;
 648         default:
 649                 break;
 650         }
 651
 652         wlsc_surface_damage(es);
 653         es->map_type = WLSC_SURFACE_MAP_TOPLEVEL;
 654 }
 655
 656 static void
 657 surface_map_transient(struct wl_client *client,
 658                       struct wl_surface *surface, struct wl_surface *parent,
 659                       int x, int y, uint32_t flags)
 660 {
 661         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 662         struct wlsc_surface *pes = (struct wlsc_surface *) parent;
 663
 664         switch (es->map_type) {
 665         case WLSC_SURFACE_MAP_UNMAPPED:
 666                 wl_list_insert(&es->compositor->surface_list, &es->link);
 667                 break;
 668         case WLSC_SURFACE_MAP_FULLSCREEN:
 669                 es->fullscreen_output = NULL;
 670                 break;
 671         default:
 672                 break;
 673         }
 674
 675         es->x = pes->x + x;
 676         es->y = pes->y + y;
 677
 678         wlsc_surface_update_matrix(es);
 679         wlsc_surface_damage(es);
 680         es->map_type = WLSC_SURFACE_MAP_TRANSIENT;
 681 }
 682
 683 static void
 684 surface_map_fullscreen(struct wl_client *client, struct wl_surface *surface)
 685 {
 686         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 687         struct wlsc_output *output;
 688
 689         switch (es->map_type) {
 690         case WLSC_SURFACE_MAP_UNMAPPED:
 691                 es->x = 10 + random() % 400;
 692                 es->y = 10 + random() % 400;
 693                 wl_list_insert(&es->compositor->surface_list, &es->link);
 694                 break;
 695         case WLSC_SURFACE_MAP_FULLSCREEN:
 696                 return;
 697         default:
 698                 break;
 699         }
 700
 701         /* FIXME: Fullscreen on first output */
 702         /* FIXME: Handle output going away */
 703         output = container_of(es->compositor->output_list.next,
 704                               struct wlsc_output, link);
 705
 706         es->saved_x = es->x;
 707         es->saved_y = es->y;
 708         es->x = (output->width - es->width) / 2;
 709         es->y = (output->height - es->height) / 2;
 710         es->fullscreen_output = output;
 711         wlsc_surface_update_matrix(es);
 712         wlsc_surface_damage(es);
 713         es->map_type = WLSC_SURFACE_MAP_FULLSCREEN;
 714 }
 715
 716 static void
 717 surface_damage(struct wl_client *client,
 718                struct wl_surface *surface,
 719                int32_t x, int32_t y, int32_t width, int32_t height)
 720 {
 721         struct wlsc_surface *es = (struct wlsc_surface *) surface;
 722
 723         es->buffer->damage(es->buffer, surface, x, y, width, height);
 724
 725         wlsc_surface_damage_rectangle(es, x, y, width, height);
 726 }
 727
 728 const static struct wl_surface_interface surface_interface = {
 729         surface_destroy,
 730         surface_attach,
 731         surface_map_toplevel,
 732         surface_map_transient,
 733         surface_map_fullscreen,
 734         surface_damage
 735 };
 736
 737 static void
 738 wlsc_input_device_attach(struct wlsc_input_device *device,
 739                          struct wl_buffer *buffer, int x, int y)
 740 {
 741         wlsc_surface_damage(device->sprite);
 742
 743         wlsc_buffer_attach(buffer, &device->sprite->surface);
 744         device->hotspot_x = x;
 745         device->hotspot_y = y;
 746
 747         device->sprite->x = device->input_device.x - device->hotspot_x;
 748         device->sprite->y = device->input_device.y - device->hotspot_y;
 749         device->sprite->width = buffer->width;
 750         device->sprite->height = buffer->height;
 751         wlsc_surface_update_matrix(device->sprite);
 752
 753         wlsc_surface_damage(device->sprite);
 754 }
 755
 756
 757 void
 758 wlsc_input_device_set_pointer_image(struct wlsc_input_device *device,
 759                                     enum wlsc_pointer_type type)
 760 {
 761         struct wlsc_compositor *compositor =
 762                 (struct wlsc_compositor *) device->input_device.compositor;
 763
 764         wlsc_input_device_attach(device,
 765                                  compositor->pointer_buffers[type],
 766                                  pointer_images[type].hotspot_x,
 767                                  pointer_images[type].hotspot_y);
 768 }
 769
 770 static void
 771 compositor_create_surface(struct wl_client *client,
 772                           struct wl_compositor *compositor, uint32_t id)
 773 {
 774         struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
 775         struct wlsc_surface *surface;
 776
 777         surface = wlsc_surface_create(ec, 0, 0, 0, 0);
 778         if (surface == NULL) {
 779                 wl_client_post_no_memory(client);
 780                 return;
 781         }
 782
 783         surface->surface.resource.destroy = destroy_surface;
 784
 785         surface->surface.resource.object.id = id;
 786         surface->surface.resource.object.interface = &wl_surface_interface;
 787         surface->surface.resource.object.implementation =
 788                 (void (**)(void)) &surface_interface;
 789         surface->surface.client = client;
 790
 791         wl_client_add_resource(client, &surface->surface.resource);
 792 }
 793
 794 const static struct wl_compositor_interface compositor_interface = {
 795         compositor_create_surface,
 796 };
 797
 798 static void
 799 wlsc_surface_transform(struct wlsc_surface *surface,
 800                        int32_t x, int32_t y, int32_t *sx, int32_t *sy)
 801 {
 802         struct wlsc_vector v = { { x, y, 0, 1 } };
 803
 804         wlsc_matrix_transform(&surface->matrix_inv, &v);
 805         *sx = v.f[0] * surface->width;
 806         *sy = v.f[1] * surface->height;
 807 }
 808
 809 struct wlsc_surface *
 810 pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
 811 {
 812         struct wlsc_compositor *ec =
 813                 (struct wlsc_compositor *) device->compositor;
 814         struct wlsc_surface *es;
 815
 816         wl_list_for_each(es, &ec->surface_list, link) {
 817                 wlsc_surface_transform(es, device->x, device->y, sx, sy);
 818                 if (0 <= *sx && *sx < es->width &&
 819                     0 <= *sy && *sy < es->height)
 820                         return es;
 821         }
 822
 823         return NULL;
 824 }
 825
 826
 827 static void
 828 motion_grab_motion(struct wl_grab *grab,
 829                    uint32_t time, int32_t x, int32_t y)
 830 {
 831         struct wlsc_input_device *device =
 832                 (struct wlsc_input_device *) grab->input_device;
 833         struct wlsc_surface *es =
 834                 (struct wlsc_surface *) device->input_device.pointer_focus;
 835         int32_t sx, sy;
 836
 837         wlsc_surface_transform(es, x, y, &sx, &sy);
 838         wl_client_post_event(es->surface.client,
 839                              &device->input_device.object,
 840                              WL_INPUT_DEVICE_MOTION,
 841                              time, x, y, sx, sy);
 842 }
 843
 844 static void
 845 motion_grab_button(struct wl_grab *grab,
 846                    uint32_t time, int32_t button, int32_t state)
 847 {
 848         wl_client_post_event(grab->input_device->pointer_focus->client,
 849                              &grab->input_device->object,
 850                              WL_INPUT_DEVICE_BUTTON,
 851                              time, button, state);
 852 }
 853
 854 static void
 855 motion_grab_end(struct wl_grab *grab, uint32_t time)
 856 {
 857 }
 858
 859 static const struct wl_grab_interface motion_grab_interface = {
 860         motion_grab_motion,
 861         motion_grab_button,
 862         motion_grab_end
 863 };
 864
 865 void
 866 notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
 867 {
 868         struct wlsc_surface *es;
 869         struct wlsc_compositor *ec =
 870                 (struct wlsc_compositor *) device->compositor;
 871         struct wlsc_output *output;
 872         const struct wl_grab_interface *interface;
 873         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
 874         int32_t sx, sy;
 875         int x_valid = 0, y_valid = 0;
 876         int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
 877
 878         wl_list_for_each(output, &ec->output_list, link) {
 879                 if (output->x <= x && x <= output->x + output->width)
 880                         x_valid = 1;
 881
 882                 if (output->y <= y && y <= output->y + output->height)
 883                         y_valid = 1;
 884
 885                 /* FIXME: calculate this only on output addition/deletion */
 886                 if (output->x < min_x)
 887                         min_x = output->x;
 888                 if (output->y < min_y)
 889                         min_y = output->y;
 890
 891                 if (output->x + output->width > max_x)
 892                         max_x = output->x + output->width;
 893                 if (output->y + output->height > max_y)
 894                         max_y = output->y + output->height;
 895         }
 896
 897         if (!x_valid) {
 898                 if (x < min_x)
 899                         x = min_x;
 900                 else if (x >= max_x)
 901                         x = max_x;
 902         }
 903         if (!y_valid) {
 904                 if (y < min_y)
 905                         y = min_y;
 906                 else  if (y >= max_y)
 907                         y = max_y;
 908         }
 909
 910         device->x = x;
 911         device->y = y;
 912
 913         if (device->grab) {
 914                 interface = device->grab->interface;
 915                 interface->motion(device->grab, time, x, y);
 916         } else {
 917                 es = pick_surface(device, &sx, &sy);
 918                 wl_input_device_set_pointer_focus(device,
 919                                                   &es->surface,
 920                                                   time, x, y, sx, sy);
 921                 if (es)
 922                         wl_client_post_event(es->surface.client,
 923                                              &device->object,
 924                                              WL_INPUT_DEVICE_MOTION,
 925                                              time, x, y, sx, sy);
 926         }
 927
 928         wlsc_surface_damage(wd->sprite);
 929
 930         wd->sprite->x = device->x - wd->hotspot_x;
 931         wd->sprite->y = device->y - wd->hotspot_y;
 932         wlsc_surface_update_matrix(wd->sprite);
 933
 934         wlsc_surface_damage(wd->sprite);
 935 }
 936
 937 static void
 938 wlsc_surface_activate(struct wlsc_surface *surface,
 939                       struct wlsc_input_device *device, uint32_t time)
 940 {
 941         wlsc_surface_raise(surface);
 942         if (device->selection)
 943                 wlsc_selection_set_focus(device->selection,
 944                                          &surface->surface, time);
 945
 946         wl_input_device_set_keyboard_focus(&device->input_device,
 947                                            &surface->surface,
 948                                            time);
 949 }
 950
 951 void
 952 notify_button(struct wl_input_device *device,
 953               uint32_t time, int32_t button, int32_t state)
 954 {
 955         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
 956         struct wlsc_surface *surface;
 957         struct wlsc_compositor *compositor =
 958                 (struct wlsc_compositor *) device->compositor;
 959
 960         surface = (struct wlsc_surface *) device->pointer_focus;
 961         uint32_t edges = 0;
 962         int32_t x, y;
 963
 964         if (state && surface && device->grab == NULL) {
 965                 wlsc_surface_activate(surface, wd, time);
 966                 wl_input_device_start_grab(device,
 967                                            &device->motion_grab,
 968                                            button, time);
 969         }
 970
 971         if (state && surface && button == BTN_LEFT &&
 972             (wd->modifier_state & MODIFIER_SUPER))
 973                 shell_move(NULL,
 974                            (struct wl_shell *) &compositor->shell,
 975                            &surface->surface, device, time);
 976         else if (state && surface && button == BTN_MIDDLE &&
 977                  (wd->modifier_state & MODIFIER_SUPER)) {
 978
 979                 x = device->grab_x - surface->x;
 980                 y = device->grab_y - surface->y;
 981
 982                 if (x < surface->width / 3)
 983                         edges |= WL_SHELL_RESIZE_LEFT;
 984                 else if (x < 2 * surface->width / 3)
 985                         edges |= 0;
 986                 else
 987                         edges |= WL_SHELL_RESIZE_RIGHT;
 988
 989                 if (y < surface->height / 3)
 990                         edges |= WL_SHELL_RESIZE_TOP;
 991                 else if (y < 2 * surface->height / 3)
 992                         edges |= 0;
 993                 else
 994                         edges |= WL_SHELL_RESIZE_BOTTOM;
 995
 996                 shell_resize(NULL,
 997                              (struct wl_shell *) &compositor->shell,
 998                              &surface->surface, device, time, edges);
 999         }
1000
1001         if (device->grab)
1002                 device->grab->interface->button(device->grab, time,
1003                                                 button, state);
1004
1005         if (!state && device->grab && device->grab_button == button)
1006                 wl_input_device_end_grab(device, time);
1007 }
1008
1009 static void
1010 wlsc_switcher_next(struct wlsc_switcher *switcher)
1011 {
1012         struct wl_list *l;
1013
1014         wlsc_surface_damage(switcher->current);
1015         l = switcher->current->link.next;
1016         if (l == &switcher->compositor->surface_list)
1017                 l = switcher->compositor->surface_list.next;
1018         switcher->current = container_of(l, struct wlsc_surface, link);
1019         wl_list_remove(&switcher->listener.link);
1020         wl_list_insert(switcher->current->surface.destroy_listener_list.prev,
1021                        &switcher->listener.link);
1022         wlsc_surface_damage(switcher->current);
1023 }
1024
1025 static void
1026 switcher_handle_surface_destroy(struct wl_listener *listener,
1027                                 struct wl_surface *surface, uint32_t time)
1028 {
1029         struct wlsc_switcher *switcher =
1030                 container_of(listener, struct wlsc_switcher, listener);
1031
1032         wlsc_switcher_next(switcher);
1033 }
1034
1035 static struct wlsc_switcher *
1036 wlsc_switcher_create(struct wlsc_compositor *compositor)
1037 {
1038         struct wlsc_switcher *switcher;
1039
1040         switcher = malloc(sizeof *switcher);
1041         switcher->compositor = compositor;
1042         switcher->current = container_of(compositor->surface_list.next,
1043                                          struct wlsc_surface, link);
1044         switcher->listener.func = switcher_handle_surface_destroy;
1045         wl_list_init(&switcher->listener.link);
1046
1047         return switcher;
1048 }
1049
1050 static void
1051 wlsc_switcher_destroy(struct wlsc_switcher *switcher)
1052 {
1053         wl_list_remove(&switcher->listener.link);
1054         free(switcher);
1055 }
1056
1057 void
1058 notify_key(struct wl_input_device *device,
1059            uint32_t time, uint32_t key, uint32_t state)
1060 {
1061         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1062         struct wlsc_compositor *compositor =
1063                 (struct wlsc_compositor *) device->compositor;
1064         uint32_t *k, *end;
1065         uint32_t modifier;
1066
1067         switch (key | wd->modifier_state) {
1068         case KEY_BACKSPACE | MODIFIER_CTRL | MODIFIER_ALT:
1069                 wl_display_terminate(compositor->wl_display);
1070                 return;
1071
1072         case KEY_TAB | MODIFIER_SUPER:
1073                 if (!state)
1074                         return;
1075                 if (wl_list_empty(&compositor->surface_list))
1076                         return;
1077                 if (compositor->switcher == NULL)
1078                         compositor->switcher = wlsc_switcher_create(compositor);
1079
1080                 wlsc_switcher_next(compositor->switcher);
1081                 return;
1082
1083         case KEY_LEFTMETA | MODIFIER_SUPER:
1084         case KEY_RIGHTMETA | MODIFIER_SUPER:
1085                 if (compositor->switcher && !state) {
1086                         wlsc_surface_activate(compositor->switcher->current,
1087                                               wd, time);
1088                         wlsc_switcher_destroy(compositor->switcher);
1089                         compositor->switcher = NULL;
1090                 }
1091                 break;
1092         }
1093
1094         switch (key) {
1095         case KEY_LEFTCTRL:
1096         case KEY_RIGHTCTRL:
1097                 modifier = MODIFIER_CTRL;
1098                 break;
1099
1100         case KEY_LEFTALT:
1101         case KEY_RIGHTALT:
1102                 modifier = MODIFIER_ALT;
1103                 break;
1104
1105         case KEY_LEFTMETA:
1106         case KEY_RIGHTMETA:
1107                 modifier = MODIFIER_SUPER;
1108                 break;
1109
1110         default:
1111                 modifier = 0;
1112                 break;
1113         }
1114
1115         if (state)
1116                 wd->modifier_state |= modifier;
1117         else
1118                 wd->modifier_state &= ~modifier;
1119
1120         end = device->keys.data + device->keys.size;
1121         for (k = device->keys.data; k < end; k++) {
1122                 if (*k == key)
1123                         *k = *--end;
1124         }
1125         device->keys.size = (void *) end - device->keys.data;
1126         if (state) {
1127                 k = wl_array_add(&device->keys, sizeof *k);
1128                 *k = key;
1129         }
1130
1131         if (device->keyboard_focus != NULL)
1132                 wl_client_post_event(device->keyboard_focus->client,
1133                                      &device->object,
1134                                      WL_INPUT_DEVICE_KEY, time, key, state);
1135 }
1136
1137 void
1138 notify_pointer_focus(struct wl_input_device *device,
1139                      uint32_t time, struct wlsc_output *output,
1140                      int32_t x, int32_t y)
1141 {
1142         struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
1143         struct wlsc_compositor *compositor =
1144                 (struct wlsc_compositor *) device->compositor;
1145         struct wlsc_surface *es;
1146         int32_t sx, sy;
1147
1148         if (output) {
1149                 device->x = x;
1150                 device->y = y;
1151                 es = pick_surface(device, &sx, &sy);
1152                 wl_input_device_set_pointer_focus(device,
1153                                                   &es->surface,
1154                                                   time, x, y, sx, sy);
1155
1156                 compositor->focus = 1;
1157
1158                 wd->sprite->x = device->x - wd->hotspot_x;
1159                 wd->sprite->y = device->y - wd->hotspot_y;
1160                 wlsc_surface_update_matrix(wd->sprite);
1161         } else {
1162                 wl_input_device_set_pointer_focus(device, NULL,
1163                                                   time, 0, 0, 0, 0);
1164                 compositor->focus = 0;
1165         }
1166
1167         wlsc_surface_damage(wd->sprite);
1168 }
1169
1170 void
1171 notify_keyboard_focus(struct wl_input_device *device,
1172                       uint32_t time, struct wlsc_output *output,
1173                       struct wl_array *keys)
1174 {
1175         struct wlsc_input_device *wd =
1176                 (struct wlsc_input_device *) device;
1177         struct wlsc_compositor *compositor =
1178                 (struct wlsc_compositor *) device->compositor;
1179         struct wlsc_surface *es;
1180
1181         if (!wl_list_empty(&compositor->surface_list))
1182                 es = container_of(compositor->surface_list.next,
1183                                   struct wlsc_surface, link);
1184         else
1185                 es = NULL;
1186
1187         if (output) {
1188                 wl_array_copy(&wd->input_device.keys, keys);
1189                 wl_input_device_set_keyboard_focus(&wd->input_device,
1190                                                    &es->surface, time);
1191         } else {
1192                 wl_input_device_set_keyboard_focus(&wd->input_device,
1193                                                    NULL, time);
1194         }
1195 }
1196
1197
1198 static void
1199 input_device_attach(struct wl_client *client,
1200                     struct wl_input_device *device_base,
1201                     uint32_t time,
1202                     struct wl_buffer *buffer, int32_t x, int32_t y)
1203 {
1204         struct wlsc_input_device *device =
1205                 (struct wlsc_input_device *) device_base;
1206
1207         if (time < device->input_device.pointer_focus_time)
1208                 return;
1209         if (device->input_device.pointer_focus == NULL)
1210                 return;
1211         if (device->input_device.pointer_focus->client != client)
1212                 return;
1213
1214         if (buffer == NULL) {
1215                 wlsc_input_device_set_pointer_image(device,
1216                                                     WLSC_POINTER_LEFT_PTR);
1217                 return;
1218         }
1219
1220         wlsc_input_device_attach(device, buffer, x, y);
1221 }
1222
1223 const static struct wl_input_device_interface input_device_interface = {
1224         input_device_attach,
1225 };
1226
1227 void
1228 wlsc_input_device_init(struct wlsc_input_device *device,
1229                        struct wlsc_compositor *ec)
1230 {
1231         wl_input_device_init(&device->input_device, &ec->compositor);
1232
1233         device->input_device.object.interface = &wl_input_device_interface;
1234         device->input_device.object.implementation =
1235                 (void (**)(void)) &input_device_interface;
1236         wl_display_add_object(ec->wl_display, &device->input_device.object);
1237         wl_display_add_global(ec->wl_display, &device->input_device.object, NULL);
1238
1239         device->sprite = wlsc_surface_create(ec,
1240                                              device->input_device.x,
1241                                              device->input_device.y, 32, 32);
1242         device->hotspot_x = 16;
1243         device->hotspot_y = 16;
1244
1245         device->input_device.motion_grab.interface = &motion_grab_interface;
1246
1247         wl_list_insert(ec->input_device_list.prev, &device->link);
1248
1249         wlsc_input_device_set_pointer_image(device, WLSC_POINTER_LEFT_PTR);
1250 }
1251
1252 static void
1253 wlsc_output_post_geometry(struct wl_client *client, struct wl_object *global)
1254 {
1255         struct wlsc_output *output =
1256                 container_of(global, struct wlsc_output, object);
1257
1258         wl_client_post_event(client, global,
1259                              WL_OUTPUT_GEOMETRY,
1260                              output->x, output->y,
1261                              output->width, output->height);
1262 }
1263
1264 static const char vertex_shader[] =
1265         "uniform mat4 proj;\n"
1266         "attribute vec2 position;\n"
1267         "attribute vec2 texcoord;\n"
1268         "varying vec2 v_texcoord;\n"
1269         "void main()\n"
1270         "{\n"
1271         "   gl_Position = proj * vec4(position, 0.0, 1.0);\n"
1272         "   v_texcoord = texcoord;\n"
1273         "}\n";
1274
1275 static const char fragment_shader[] =
1276         "precision mediump float;\n"
1277         "varying vec2 v_texcoord;\n"
1278         "uniform sampler2D tex;\n"
1279         "void main()\n"
1280         "{\n"
1281         "   gl_FragColor = texture2D(tex, v_texcoord)\n;"
1282         "}\n";
1283
1284 static int
1285 init_shaders(struct wlsc_compositor *ec)
1286 {
1287         GLuint v, f, program;
1288         const char *p;
1289         char msg[512];
1290         GLint status;
1291
1292         p = vertex_shader;
1293         v = glCreateShader(GL_VERTEX_SHADER);
1294         glShaderSource(v, 1, &p, NULL);
1295         glCompileShader(v);
1296         glGetShaderiv(v, GL_COMPILE_STATUS, &status);
1297         if (!status) {
1298                 glGetShaderInfoLog(v, sizeof msg, NULL, msg);
1299                 fprintf(stderr, "vertex shader info: %s\n", msg);
1300                 return -1;
1301         }
1302
1303         p = fragment_shader;
1304         f = glCreateShader(GL_FRAGMENT_SHADER);
1305         glShaderSource(f, 1, &p, NULL);
1306         glCompileShader(f);
1307         glGetShaderiv(f, GL_COMPILE_STATUS, &status);
1308         if (!status) {
1309                 glGetShaderInfoLog(f, sizeof msg, NULL, msg);
1310                 fprintf(stderr, "fragment shader info: %s\n", msg);
1311                 return -1;
1312         }
1313
1314         program = glCreateProgram();
1315         glAttachShader(program, v);
1316         glAttachShader(program, f);
1317         glBindAttribLocation(program, 0, "position");
1318         glBindAttribLocation(program, 1, "texcoord");
1319
1320         glLinkProgram(program);
1321         glGetProgramiv(program, GL_LINK_STATUS, &status);
1322         if (!status) {
1323                 glGetProgramInfoLog(program, sizeof msg, NULL, msg);
1324                 fprintf(stderr, "link info: %s\n", msg);
1325                 return -1;
1326         }
1327
1328         glUseProgram(program);
1329         ec->proj_uniform = glGetUniformLocation(program, "proj");
1330         ec->tex_uniform = glGetUniformLocation(program, "tex");
1331
1332         return 0;
1333 }
1334
1335 void
1336 wlsc_output_destroy(struct wlsc_output *output)
1337 {
1338         destroy_surface(&output->background->surface.resource, NULL);
1339 }
1340
1341 void
1342 wlsc_output_move(struct wlsc_output *output, int x, int y)
1343 {
1344         struct wlsc_compositor *c = output->compositor;
1345         int flip;
1346
1347         output->x = x;
1348         output->y = y;
1349
1350         if (output->background) {
1351                 output->background->x = x;
1352                 output->background->y = y;
1353                 wlsc_surface_update_matrix(output->background);
1354         }
1355
1356         pixman_region32_init(&output->previous_damage_region);
1357
1358         wlsc_matrix_init(&output->matrix);
1359         wlsc_matrix_translate(&output->matrix,
1360                               -output->x - output->width / 2.0,
1361                               -output->y - output->height / 2.0, 0);
1362
1363         flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
1364         wlsc_matrix_scale(&output->matrix,
1365                           2.0 / output->width,
1366                           flip * 2.0 / output->height, 1);
1367
1368         pixman_region32_union_rect(&c->damage_region,
1369                                    &c->damage_region,
1370                                    x, y, output->width, output->height);
1371 }
1372
1373 void
1374 wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
1375                  int x, int y, int width, int height, uint32_t flags)
1376 {
1377         output->compositor = c;
1378         output->x = x;
1379         output->y = y;
1380         output->width = width;
1381         output->height = height;
1382
1383         output->background =
1384                 background_create(output, option_background);
1385
1386         output->flags = flags;
1387         wlsc_output_move(output, x, y);
1388
1389         output->object.interface = &wl_output_interface;
1390         wl_display_add_object(c->wl_display, &output->object);
1391         wl_display_add_global(c->wl_display, &output->object,
1392                               wlsc_output_post_geometry);
1393 }
1394
1395 int
1396 wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
1397 {
1398         struct wl_event_loop *loop;
1399         const char *extensions;
1400
1401         ec->wl_display = display;
1402
1403         wl_compositor_init(&ec->compositor, &compositor_interface, display);
1404
1405         wlsc_shm_init(ec);
1406         eglBindWaylandDisplayWL(ec->display, ec->wl_display);
1407
1408         wlsc_shell_init(ec);
1409
1410         wl_list_init(&ec->surface_list);
1411         wl_list_init(&ec->input_device_list);
1412         wl_list_init(&ec->output_list);
1413
1414         create_pointer_images(ec);
1415
1416         screenshooter_create(ec);
1417
1418         extensions = (const char *) glGetString(GL_EXTENSIONS);
1419         if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
1420                 fprintf(stderr,
1421                         "GL_EXT_texture_format_BGRA8888 not available\n");
1422                 return -1;
1423         }
1424
1425         glActiveTexture(GL_TEXTURE0);
1426         if (init_shaders(ec) < 0)
1427                 return -1;
1428
1429         loop = wl_display_get_event_loop(ec->wl_display);
1430         ec->timer_source = wl_event_loop_add_timer(loop, repaint, ec);
1431         pixman_region32_init(&ec->damage_region);
1432         wlsc_compositor_schedule_repaint(ec);
1433
1434         return 0;
1435 }
1436
1437 static void on_term_signal(int signal_number, void *data)
1438 {
1439         struct wlsc_compositor *ec = data;
1440
1441         wl_display_terminate(ec->wl_display);
1442 }
1443
1444 int main(int argc, char *argv[])
1445 {
1446         struct wl_display *display;
1447         struct wlsc_compositor *ec;
1448         struct wl_event_loop *loop;
1449         GError *error = NULL;
1450         GOptionContext *context;
1451         int width, height;
1452
1453         g_type_init(); /* GdkPixbuf needs this, it seems. */
1454
1455         context = g_option_context_new(NULL);
1456         g_option_context_add_main_entries(context, option_entries, "Wayland");
1457         if (!g_option_context_parse(context, &argc, &argv, &error)) {
1458                 fprintf(stderr, "option parsing failed: %s\n", error->message);
1459                 exit(EXIT_FAILURE);
1460         }
1461         if (sscanf(option_geometry, "%dx%d", &width, &height) != 2) {
1462                 fprintf(stderr, "invalid geometry option: %s \n",
1463                         option_geometry);
1464                 exit(EXIT_FAILURE);
1465         }
1466
1467         display = wl_display_create();
1468
1469         ec = NULL;
1470
1471 #if BUILD_WAYLAND_COMPOSITOR
1472         if (getenv("WAYLAND_DISPLAY"))
1473                 ec = wayland_compositor_create(display, width, height);
1474 #endif
1475
1476 #if BUILD_X11_COMPOSITOR
1477         if (ec == NULL && getenv("DISPLAY"))
1478                 ec = x11_compositor_create(display, width, height);
1479 #endif
1480
1481 #if BUILD_DRM_COMPOSITOR
1482         if (ec == NULL)
1483                 ec = drm_compositor_create(display, option_connector);
1484 #endif
1485
1486         if (ec == NULL) {
1487                 fprintf(stderr, "failed to create compositor\n");
1488                 exit(EXIT_FAILURE);
1489         }
1490
1491         if (wl_display_add_socket(display, option_socket_name)) {
1492                 fprintf(stderr, "failed to add socket: %m\n");
1493                 exit(EXIT_FAILURE);
1494         }
1495
1496         loop = wl_display_get_event_loop(ec->wl_display);
1497         wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
1498         wl_event_loop_add_signal(loop, SIGINT, on_term_signal, ec);
1499
1500         wl_display_run(display);
1501
1502         eglUnbindWaylandDisplayWL(ec->display, display);
1503         wl_display_destroy(display);
1504
1505         ec->destroy(ec);
1506
1507         return 0;
1508 }