src/compositor-wayland.c

   1 /*
   2  * Copyright © 2010-2011 Benjamin Franzke
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and
   5  * its documentation for any purpose is hereby granted without fee, provided
   6  * that the above copyright notice appear in all copies and that both that
   7  * copyright notice and this permission notice appear in supporting
   8  * documentation, and that the name of the copyright holders not be used in
   9  * advertising or publicity pertaining to distribution of the software
  10  * without specific, written prior permission.  The copyright holders make
  11  * no representations about the suitability of this software for any
  12  * purpose.  It is provided "as is" without express or implied warranty.
  13  *
  14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  15  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  16  * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  17  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  18  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  19  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  20  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stddef.h>
  28 #define _GNU_SOURCE
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <fcntl.h>
  33 #include <unistd.h>
  34 #include <sys/mman.h>
  35
  36 #include <wayland-client.h>
  37 #include <wayland-egl.h>
  38
  39 #include <GLES2/gl2.h>
  40 #include <GLES2/gl2ext.h>
  41 #include <EGL/egl.h>
  42 #include <EGL/eglext.h>
  43
  44 #include "compositor.h"
  45
  46 struct wayland_compositor {
  47         struct weston_compositor         base;
  48
  49         struct {
  50                 struct wl_display *wl_display;
  51                 struct wl_compositor *compositor;
  52                 struct wl_shell *shell;
  53                 struct wl_output *output;
  54
  55                 struct {
  56                         int32_t x, y, width, height;
  57                 } screen_allocation;
  58
  59                 struct wl_event_source *wl_source;
  60                 uint32_t event_mask;
  61         } parent;
  62
  63         struct {
  64                 int32_t top, bottom, left, right;
  65                 GLuint texture;
  66                 int32_t width, height;
  67         } border;
  68
  69         struct wl_list input_list;
  70 };
  71
  72 struct wayland_output {
  73         struct weston_output    base;
  74         struct wl_listener      frame_listener;
  75         struct {
  76                 struct wl_surface       *surface;
  77                 struct wl_shell_surface *shell_surface;
  78                 struct wl_egl_window    *egl_window;
  79         } parent;
  80         struct weston_mode      mode;
  81 };
  82
  83 struct wayland_input {
  84         struct weston_seat base;
  85         struct wayland_compositor *compositor;
  86         struct wl_seat *seat;
  87         struct wl_pointer *pointer;
  88         struct wl_keyboard *keyboard;
  89         struct wl_touch *touch;
  90         struct wl_list link;
  91         uint32_t key_serial;
  92         uint32_t enter_serial;
  93         int focus;
  94         struct wayland_output *output;
  95 };
  96
  97
  98 static int
  99 texture_border(struct wayland_output *output)
 100 {
 101         struct wayland_compositor *c =
 102                 (struct wayland_compositor *) output->base.compositor;
 103         GLfloat *d;
 104         unsigned int *p;
 105         int i, j, k, n;
 106         GLfloat x[4], y[4], u[4], v[4];
 107
 108         x[0] = -c->border.left;
 109         x[1] = 0;
 110         x[2] = output->base.current->width;
 111         x[3] = output->base.current->width + c->border.right;
 112
 113         y[0] = -c->border.top;
 114         y[1] = 0;
 115         y[2] = output->base.current->height;
 116         y[3] = output->base.current->height + c->border.bottom;
 117
 118         u[0] = 0.0;
 119         u[1] = (GLfloat) c->border.left / c->border.width;
 120         u[2] = (GLfloat) (c->border.width - c->border.right) / c->border.width;
 121         u[3] = 1.0;
 122
 123         v[0] = 0.0;
 124         v[1] = (GLfloat) c->border.top / c->border.height;
 125         v[2] = (GLfloat) (c->border.height - c->border.bottom) / c->border.height;
 126         v[3] = 1.0;
 127
 128         n = 8;
 129         d = wl_array_add(&c->base.vertices, n * 16 * sizeof *d);
 130         p = wl_array_add(&c->base.indices, n * 6 * sizeof *p);
 131
 132         k = 0;
 133         for (i = 0; i < 3; i++)
 134                 for (j = 0; j < 3; j++) {
 135
 136                         if (i == 1 && j == 1)
 137                                 continue;
 138
 139                         d[ 0] = x[i];
 140                         d[ 1] = y[j];
 141                         d[ 2] = u[i];
 142                         d[ 3] = v[j];
 143
 144                         d[ 4] = x[i];
 145                         d[ 5] = y[j + 1];
 146                         d[ 6] = u[i];
 147                         d[ 7] = v[j + 1];
 148
 149                         d[ 8] = x[i + 1];
 150                         d[ 9] = y[j];
 151                         d[10] = u[i + 1];
 152                         d[11] = v[j];
 153
 154                         d[12] = x[i + 1];
 155                         d[13] = y[j + 1];
 156                         d[14] = u[i + 1];
 157                         d[15] = v[j + 1];
 158
 159                         p[0] = k + 0;
 160                         p[1] = k + 1;
 161                         p[2] = k + 2;
 162                         p[3] = k + 2;
 163                         p[4] = k + 1;
 164                         p[5] = k + 3;
 165
 166                         d += 16;
 167                         p += 6;
 168                         k += 4;
 169                 }
 170
 171         return k / 4;
 172 }
 173
 174 static void
 175 draw_border(struct wayland_output *output)
 176 {
 177         struct wayland_compositor *c =
 178                 (struct wayland_compositor *) output->base.compositor;
 179         struct weston_shader *shader = &c->base.texture_shader_rgba;
 180         GLfloat *v;
 181         int n;
 182
 183         glDisable(GL_BLEND);
 184         glUseProgram(shader->program);
 185         c->base.current_shader = shader;
 186
 187         glUniformMatrix4fv(shader->proj_uniform,
 188                            1, GL_FALSE, output->base.matrix.d);
 189
 190         glUniform1i(shader->tex_uniforms[0], 0);
 191         glUniform1f(shader->alpha_uniform, 1);
 192
 193         n = texture_border(output);
 194
 195         glBindTexture(GL_TEXTURE_2D, c->border.texture);
 196
 197         v = c->base.vertices.data;
 198         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 199         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 200         glEnableVertexAttribArray(0);
 201         glEnableVertexAttribArray(1);
 202
 203         glDrawElements(GL_TRIANGLES, n * 6,
 204                        GL_UNSIGNED_INT, c->base.indices.data);
 205
 206         glDisableVertexAttribArray(1);
 207         glDisableVertexAttribArray(0);
 208
 209         c->base.vertices.size = 0;
 210         c->base.indices.size = 0;
 211 }
 212
 213 static void
 214 create_border(struct wayland_compositor *c)
 215 {
 216         pixman_image_t *image;
 217
 218         image = load_image(DATADIR "/weston/border.png");
 219         if (!image) {
 220                 weston_log("could'nt load border image\n");
 221                 return;
 222         }
 223
 224         c->border.width = pixman_image_get_width(image);
 225         c->border.height = pixman_image_get_height(image);
 226
 227         glGenTextures(1, &c->border.texture);
 228         glBindTexture(GL_TEXTURE_2D, c->border.texture);
 229         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 230         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 231         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 232         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 233
 234         glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 235                      c->border.width,
 236                      c->border.height,
 237                      0, GL_BGRA_EXT, GL_UNSIGNED_BYTE,
 238                      pixman_image_get_data(image));
 239
 240         pixman_image_unref(image);
 241 }
 242
 243 static int
 244 wayland_compositor_init_egl(struct wayland_compositor *c)
 245 {
 246         EGLint major, minor;
 247         EGLint n;
 248         EGLint config_attribs[] = {
 249                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 250                 EGL_RED_SIZE, 1,
 251                 EGL_GREEN_SIZE, 1,
 252                 EGL_BLUE_SIZE, 1,
 253                 EGL_ALPHA_SIZE, 1,
 254                 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
 255                 EGL_NONE
 256         };
 257
 258         c->base.egl_display = eglGetDisplay(c->parent.wl_display);
 259         if (c->base.egl_display == NULL) {
 260                 weston_log("failed to create display\n");
 261                 return -1;
 262         }
 263
 264         if (!eglInitialize(c->base.egl_display, &major, &minor)) {
 265                 weston_log("failed to initialize display\n");
 266                 return -1;
 267         }
 268
 269         if (!eglChooseConfig(c->base.egl_display, config_attribs,
 270                              &c->base.egl_config, 1, &n) || n == 0) {
 271                 weston_log("failed to choose config: %d\n", n);
 272                 return -1;
 273         }
 274
 275         return 0;
 276 }
 277
 278 static void
 279 frame_done(void *data, struct wl_callback *callback, uint32_t time)
 280 {
 281         struct weston_output *output = data;
 282
 283         wl_callback_destroy(callback);
 284         weston_output_finish_frame(output, time);
 285 }
 286
 287 static const struct wl_callback_listener frame_listener = {
 288         frame_done
 289 };
 290
 291 static void
 292 wayland_output_frame_notify(struct wl_listener *listener, void *data)
 293 {
 294         struct wayland_output *output =
 295                 container_of(listener,
 296                              struct wayland_output, frame_listener);
 297
 298         draw_border(output);
 299 }
 300
 301 static void
 302 wayland_output_repaint(struct weston_output *output_base,
 303                        pixman_region32_t *damage)
 304 {
 305         struct wayland_output *output = (struct wayland_output *) output_base;
 306         struct weston_compositor *ec = output->base.compositor;
 307         struct wl_callback *callback;
 308
 309         ec->renderer->repaint_output(&output->base, damage);
 310
 311         callback = wl_surface_frame(output->parent.surface);
 312         wl_callback_add_listener(callback, &frame_listener, output);
 313
 314         return;
 315 }
 316
 317 static void
 318 wayland_output_destroy(struct weston_output *output_base)
 319 {
 320         struct wayland_output *output = (struct wayland_output *) output_base;
 321         struct weston_compositor *ec = output->base.compositor;
 322
 323         eglDestroySurface(ec->egl_display, output->base.egl_surface);
 324         wl_egl_window_destroy(output->parent.egl_window);
 325         free(output);
 326
 327         return;
 328 }
 329
 330 static const struct wl_shell_surface_listener shell_surface_listener;
 331
 332 static int
 333 wayland_compositor_create_output(struct wayland_compositor *c,
 334                                  int width, int height)
 335 {
 336         struct wayland_output *output;
 337
 338         output = malloc(sizeof *output);
 339         if (output == NULL)
 340                 return -1;
 341         memset(output, 0, sizeof *output);
 342
 343         output->mode.flags =
 344                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 345         output->mode.width = width;
 346         output->mode.height = height;
 347         output->mode.refresh = 60;
 348         wl_list_init(&output->base.mode_list);
 349         wl_list_insert(&output->base.mode_list, &output->mode.link);
 350
 351         output->base.current = &output->mode;
 352         weston_output_init(&output->base, &c->base, 0, 0, width, height,
 353                                                 WL_OUTPUT_TRANSFORM_NORMAL);
 354
 355         output->base.border.top = c->border.top;
 356         output->base.border.bottom = c->border.bottom;
 357         output->base.border.left = c->border.left;
 358         output->base.border.right = c->border.right;
 359         output->base.make = "waywayland";
 360         output->base.model = "none";
 361
 362         weston_output_move(&output->base, 0, 0);
 363
 364         output->parent.surface =
 365                 wl_compositor_create_surface(c->parent.compositor);
 366         wl_surface_set_user_data(output->parent.surface, output);
 367
 368         output->parent.egl_window =
 369                 wl_egl_window_create(output->parent.surface,
 370                                      width + c->border.left + c->border.right,
 371                                      height + c->border.top + c->border.bottom);
 372         if (!output->parent.egl_window) {
 373                 weston_log("failure to create wl_egl_window\n");
 374                 goto cleanup_output;
 375         }
 376
 377         output->base.egl_surface =
 378                 eglCreateWindowSurface(c->base.egl_display, c->base.egl_config,
 379                                        output->parent.egl_window, NULL);
 380         if (!output->base.egl_surface) {
 381                 weston_log("failed to create window surface\n");
 382                 goto cleanup_window;
 383         }
 384
 385         output->parent.shell_surface =
 386                 wl_shell_get_shell_surface(c->parent.shell,
 387                                            output->parent.surface);
 388         wl_shell_surface_add_listener(output->parent.shell_surface,
 389                                       &shell_surface_listener, output);
 390         wl_shell_surface_set_toplevel(output->parent.shell_surface);
 391
 392         output->base.origin = output->base.current;
 393         output->base.repaint = wayland_output_repaint;
 394         output->base.destroy = wayland_output_destroy;
 395         output->base.assign_planes = NULL;
 396         output->base.set_backlight = NULL;
 397         output->base.set_dpms = NULL;
 398         output->base.switch_mode = NULL;
 399
 400         wl_list_insert(c->base.output_list.prev, &output->base.link);
 401
 402         output->frame_listener.notify = wayland_output_frame_notify;
 403         wl_signal_add(&output->base.frame_signal, &output->frame_listener);
 404
 405         return 0;
 406
 407 cleanup_window:
 408         wl_egl_window_destroy(output->parent.egl_window);
 409 cleanup_output:
 410         /* FIXME: cleanup weston_output */
 411         free(output);
 412
 413         return -1;
 414 }
 415
 416 static void
 417 shell_surface_ping(void *data, struct wl_shell_surface *shell_surface,
 418                    uint32_t serial)
 419 {
 420         wl_shell_surface_pong(shell_surface, serial);
 421 }
 422
 423 static void
 424 shell_surface_configure(void *data, struct wl_shell_surface *shell_surface,
 425                         uint32_t edges, int32_t width, int32_t height)
 426 {
 427         /* FIXME: implement resizing */
 428 }
 429
 430 static void
 431 shell_surface_popup_done(void *data, struct wl_shell_surface *shell_surface)
 432 {
 433 }
 434
 435 static const struct wl_shell_surface_listener shell_surface_listener = {
 436         shell_surface_ping,
 437         shell_surface_configure,
 438         shell_surface_popup_done
 439 };
 440
 441 /* Events received from the wayland-server this compositor is client of: */
 442
 443 /* parent output interface */
 444 static void
 445 display_handle_geometry(void *data,
 446                         struct wl_output *wl_output,
 447                         int x,
 448                         int y,
 449                         int physical_width,
 450                         int physical_height,
 451                         int subpixel,
 452                         const char *make,
 453                         const char *model,
 454                         int transform)
 455 {
 456         struct wayland_compositor *c = data;
 457
 458         c->parent.screen_allocation.x = x;
 459         c->parent.screen_allocation.y = y;
 460 }
 461
 462 static void
 463 display_handle_mode(void *data,
 464                     struct wl_output *wl_output,
 465                     uint32_t flags,
 466                     int width,
 467                     int height,
 468                     int refresh)
 469 {
 470         struct wayland_compositor *c = data;
 471
 472         c->parent.screen_allocation.width = width;
 473         c->parent.screen_allocation.height = height;
 474 }
 475
 476 static const struct wl_output_listener output_listener = {
 477         display_handle_geometry,
 478         display_handle_mode
 479 };
 480
 481 static void
 482 check_focus(struct wayland_input *input, wl_fixed_t x, wl_fixed_t y)
 483 {
 484         struct wayland_compositor *c = input->compositor;
 485         int width, height, inside;
 486
 487         width = input->output->mode.width;
 488         height = input->output->mode.height;
 489
 490         inside = c->border.left <= wl_fixed_to_int(x) &&
 491                 wl_fixed_to_int(x) < width + c->border.left &&
 492                 c->border.top <= wl_fixed_to_int(y) &&
 493                 wl_fixed_to_int(y) < height + c->border.top;
 494
 495         if (!input->focus && inside) {
 496                 notify_pointer_focus(&input->base, &input->output->base,
 497                                      x - wl_fixed_from_int(c->border.left),
 498                                      y = wl_fixed_from_int(c->border.top));
 499                 wl_pointer_set_cursor(input->pointer,
 500                                       input->enter_serial, NULL, 0, 0);
 501         } else if (input->focus && !inside) {
 502                 notify_pointer_focus(&input->base, NULL, 0, 0);
 503                 /* FIXME: Should set default cursor here. */
 504         }
 505
 506         input->focus = inside;
 507 }
 508
 509 /* parent input interface */
 510 static void
 511 input_handle_pointer_enter(void *data, struct wl_pointer *pointer,
 512                            uint32_t serial, struct wl_surface *surface,
 513                            wl_fixed_t x, wl_fixed_t y)
 514 {
 515         struct wayland_input *input = data;
 516
 517         /* XXX: If we get a modifier event immediately before the focus,
 518          *      we should try to keep the same serial. */
 519         input->enter_serial = serial;
 520         input->output = wl_surface_get_user_data(surface);
 521         check_focus(input, x, y);
 522 }
 523
 524 static void
 525 input_handle_pointer_leave(void *data, struct wl_pointer *pointer,
 526                            uint32_t serial, struct wl_surface *surface)
 527 {
 528         struct wayland_input *input = data;
 529
 530         notify_pointer_focus(&input->base, NULL, 0, 0);
 531         input->output = NULL;
 532         input->focus = 0;
 533 }
 534
 535 static void
 536 input_handle_motion(void *data, struct wl_pointer *pointer,
 537                     uint32_t time, wl_fixed_t x, wl_fixed_t y)
 538 {
 539         struct wayland_input *input = data;
 540         struct wayland_compositor *c = input->compositor;
 541
 542         check_focus(input, x, y);
 543         if (input->focus)
 544                 notify_motion(&input->base, time,
 545                               x - wl_fixed_from_int(c->border.left),
 546                               y - wl_fixed_from_int(c->border.top));
 547 }
 548
 549 static void
 550 input_handle_button(void *data, struct wl_pointer *pointer,
 551                     uint32_t serial, uint32_t time, uint32_t button,
 552                     uint32_t state_w)
 553 {
 554         struct wayland_input *input = data;
 555         enum wl_pointer_button_state state = state_w;
 556
 557         notify_button(&input->base, time, button, state);
 558 }
 559
 560 static void
 561 input_handle_axis(void *data, struct wl_pointer *pointer,
 562                   uint32_t time, uint32_t axis, wl_fixed_t value)
 563 {
 564         struct wayland_input *input = data;
 565
 566         notify_axis(&input->base, time, axis, value);
 567 }
 568
 569 static const struct wl_pointer_listener pointer_listener = {
 570         input_handle_pointer_enter,
 571         input_handle_pointer_leave,
 572         input_handle_motion,
 573         input_handle_button,
 574         input_handle_axis,
 575 };
 576
 577 static void
 578 input_handle_keymap(void *data, struct wl_keyboard *keyboard, uint32_t format,
 579                     int fd, uint32_t size)
 580 {
 581         struct wayland_input *input = data;
 582         struct xkb_keymap *keymap;
 583         char *map_str;
 584
 585         if (!data) {
 586                 close(fd);
 587                 return;
 588         }
 589
 590         if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
 591                 close(fd);
 592                 return;
 593         }
 594
 595         map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
 596         if (map_str == MAP_FAILED) {
 597                 close(fd);
 598                 return;
 599         }
 600
 601         keymap = xkb_map_new_from_string(input->compositor->base.xkb_context,
 602                                          map_str,
 603                                          XKB_KEYMAP_FORMAT_TEXT_V1,
 604                                          0);
 605         munmap(map_str, size);
 606         close(fd);
 607
 608         if (!keymap) {
 609                 weston_log("failed to compile keymap\n");
 610                 return;
 611         }
 612
 613         weston_seat_init_keyboard(&input->base, keymap);
 614         xkb_map_unref(keymap);
 615 }
 616
 617 static void
 618 input_handle_keyboard_enter(void *data,
 619                             struct wl_keyboard *keyboard,
 620                             uint32_t serial,
 621                             struct wl_surface *surface,
 622                             struct wl_array *keys)
 623 {
 624         struct wayland_input *input = data;
 625
 626         /* XXX: If we get a modifier event immediately before the focus,
 627          *      we should try to keep the same serial. */
 628         notify_keyboard_focus_in(&input->base, keys,
 629                                  STATE_UPDATE_AUTOMATIC);
 630 }
 631
 632 static void
 633 input_handle_keyboard_leave(void *data,
 634                             struct wl_keyboard *keyboard,
 635                             uint32_t serial,
 636                             struct wl_surface *surface)
 637 {
 638         struct wayland_input *input = data;
 639
 640         notify_keyboard_focus_out(&input->base);
 641 }
 642
 643 static void
 644 input_handle_key(void *data, struct wl_keyboard *keyboard,
 645                  uint32_t serial, uint32_t time, uint32_t key, uint32_t state)
 646 {
 647         struct wayland_input *input = data;
 648
 649         input->key_serial = serial;
 650         notify_key(&input->base, time, key,
 651                    state ? WL_KEYBOARD_KEY_STATE_PRESSED :
 652                            WL_KEYBOARD_KEY_STATE_RELEASED,
 653                    STATE_UPDATE_NONE);
 654 }
 655
 656 static void
 657 input_handle_modifiers(void *data, struct wl_keyboard *keyboard,
 658                        uint32_t serial_in, uint32_t mods_depressed,
 659                        uint32_t mods_latched, uint32_t mods_locked,
 660                        uint32_t group)
 661 {
 662         struct wayland_input *input = data;
 663         struct wayland_compositor *c = input->compositor;
 664         uint32_t serial_out;
 665
 666         /* If we get a key event followed by a modifier event with the
 667          * same serial number, then we try to preserve those semantics by
 668          * reusing the same serial number on the way out too. */
 669         if (serial_in == input->key_serial)
 670                 serial_out = wl_display_get_serial(c->base.wl_display);
 671         else
 672                 serial_out = wl_display_next_serial(c->base.wl_display);
 673
 674         xkb_state_update_mask(input->base.xkb_state.state,
 675                               mods_depressed, mods_latched,
 676                               mods_locked, 0, 0, group);
 677         notify_modifiers(&input->base, serial_out);
 678 }
 679
 680 static const struct wl_keyboard_listener keyboard_listener = {
 681         input_handle_keymap,
 682         input_handle_keyboard_enter,
 683         input_handle_keyboard_leave,
 684         input_handle_key,
 685         input_handle_modifiers,
 686 };
 687
 688 static void
 689 input_handle_capabilities(void *data, struct wl_seat *seat,
 690                           enum wl_seat_capability caps)
 691 {
 692         struct wayland_input *input = data;
 693
 694         if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
 695                 input->pointer = wl_seat_get_pointer(seat);
 696                 wl_pointer_set_user_data(input->pointer, input);
 697                 wl_pointer_add_listener(input->pointer, &pointer_listener,
 698                                         input);
 699                 weston_seat_init_pointer(&input->base);
 700         } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
 701                 wl_pointer_destroy(input->pointer);
 702                 input->pointer = NULL;
 703         }
 704
 705         if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
 706                 input->keyboard = wl_seat_get_keyboard(seat);
 707                 wl_keyboard_set_user_data(input->keyboard, input);
 708                 wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
 709                                          input);
 710         } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
 711                 wl_keyboard_destroy(input->keyboard);
 712                 input->keyboard = NULL;
 713         }
 714 }
 715
 716 static const struct wl_seat_listener seat_listener = {
 717         input_handle_capabilities,
 718 };
 719
 720 static void
 721 display_add_seat(struct wayland_compositor *c, uint32_t id)
 722 {
 723         struct wayland_input *input;
 724
 725         input = malloc(sizeof *input);
 726         if (input == NULL)
 727                 return;
 728
 729         memset(input, 0, sizeof *input);
 730
 731         weston_seat_init(&input->base, &c->base);
 732         input->compositor = c;
 733         input->seat = wl_display_bind(c->parent.wl_display, id,
 734                                       &wl_seat_interface);
 735         wl_list_insert(c->input_list.prev, &input->link);
 736
 737         wl_seat_add_listener(input->seat, &seat_listener, input);
 738         wl_seat_set_user_data(input->seat, input);
 739 }
 740
 741 static void
 742 display_handle_global(struct wl_display *display, uint32_t id,
 743                       const char *interface, uint32_t version, void *data)
 744 {
 745         struct wayland_compositor *c = data;
 746
 747         if (strcmp(interface, "wl_compositor") == 0) {
 748                 c->parent.compositor =
 749                         wl_display_bind(display, id, &wl_compositor_interface);
 750         } else if (strcmp(interface, "wl_output") == 0) {
 751                 c->parent.output =
 752                         wl_display_bind(display, id, &wl_output_interface);
 753                 wl_output_add_listener(c->parent.output, &output_listener, c);
 754         } else if (strcmp(interface, "wl_shell") == 0) {
 755                 c->parent.shell =
 756                         wl_display_bind(display, id, &wl_shell_interface);
 757         } else if (strcmp(interface, "wl_seat") == 0) {
 758                 display_add_seat(c, id);
 759         }
 760 }
 761
 762 static int
 763 update_event_mask(uint32_t mask, void *data)
 764 {
 765         struct wayland_compositor *c = data;
 766
 767         c->parent.event_mask = mask;
 768         if (c->parent.wl_source)
 769                 wl_event_source_fd_update(c->parent.wl_source, mask);
 770
 771         return 0;
 772 }
 773
 774 static int
 775 wayland_compositor_handle_event(int fd, uint32_t mask, void *data)
 776 {
 777         struct wayland_compositor *c = data;
 778
 779         if (mask & WL_EVENT_READABLE)
 780                 wl_display_iterate(c->parent.wl_display, WL_DISPLAY_READABLE);
 781         if (mask & WL_EVENT_WRITABLE)
 782                 wl_display_iterate(c->parent.wl_display, WL_DISPLAY_WRITABLE);
 783
 784         return 1;
 785 }
 786
 787 static void
 788 wayland_restore(struct weston_compositor *ec)
 789 {
 790 }
 791
 792 static void
 793 wayland_destroy(struct weston_compositor *ec)
 794 {
 795         gles2_renderer_destroy(ec);
 796
 797         weston_compositor_shutdown(ec);
 798
 799         free(ec);
 800 }
 801
 802 static struct weston_compositor *
 803 wayland_compositor_create(struct wl_display *display,
 804                           int width, int height, const char *display_name,
 805                           int argc, char *argv[], const char *config_file)
 806 {
 807         struct wayland_compositor *c;
 808         struct wl_event_loop *loop;
 809         int fd;
 810
 811         c = malloc(sizeof *c);
 812         if (c == NULL)
 813                 return NULL;
 814
 815         memset(c, 0, sizeof *c);
 816
 817         if (weston_compositor_init(&c->base, display, argc, argv,
 818                                    config_file) < 0)
 819                 goto err_free;
 820
 821         c->parent.wl_display = wl_display_connect(display_name);
 822
 823         if (c->parent.wl_display == NULL) {
 824                 weston_log("failed to create display: %m\n");
 825                 goto err_compositor;
 826         }
 827
 828         wl_list_init(&c->input_list);
 829         wl_display_add_global_listener(c->parent.wl_display,
 830                                 display_handle_global, c);
 831
 832         wl_display_iterate(c->parent.wl_display, WL_DISPLAY_READABLE);
 833
 834         c->base.wl_display = display;
 835         if (wayland_compositor_init_egl(c) < 0)
 836                 goto err_display;
 837
 838         c->base.destroy = wayland_destroy;
 839         c->base.restore = wayland_restore;
 840
 841         c->border.top = 30;
 842         c->border.bottom = 24;
 843         c->border.left = 25;
 844         c->border.right = 26;
 845
 846         /* requires border fields */
 847         if (wayland_compositor_create_output(c, width, height) < 0)
 848                 goto err_display;
 849
 850         /* requires wayland_compositor_create_output */
 851         if (gles2_renderer_init(&c->base) < 0)
 852                 goto err_display;
 853
 854         /* requires gles2_renderer_init */
 855         create_border(c);
 856
 857         loop = wl_display_get_event_loop(c->base.wl_display);
 858
 859         fd = wl_display_get_fd(c->parent.wl_display, update_event_mask, c);
 860         c->parent.wl_source =
 861                 wl_event_loop_add_fd(loop, fd, c->parent.event_mask,
 862                                      wayland_compositor_handle_event, c);
 863         if (c->parent.wl_source == NULL)
 864                 goto err_display;
 865
 866         return &c->base;
 867
 868 err_display:
 869         wl_display_disconnect(c->parent.wl_display);
 870 err_compositor:
 871         weston_compositor_shutdown(&c->base);
 872 err_free:
 873         free(c);
 874         return NULL;
 875 }
 876
 877 WL_EXPORT struct weston_compositor *
 878 backend_init(struct wl_display *display, int argc, char *argv[],
 879              const char *config_file)
 880 {
 881         int width = 1024, height = 640;
 882         char *display_name = NULL;
 883
 884         const struct weston_option wayland_options[] = {
 885                 { WESTON_OPTION_INTEGER, "width", 0, &width },
 886                 { WESTON_OPTION_INTEGER, "height", 0, &height },
 887                 { WESTON_OPTION_STRING, "display", 0, &display_name },
 888         };
 889
 890         parse_options(wayland_options,
 891                       ARRAY_LENGTH(wayland_options), argc, argv);
 892
 893         return wayland_compositor_create(display, width, height, display_name,
 894                                          argc, argv, config_file);
 895 }