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 wl_egl_pixmap            *dummy_pixmap;
  50         EGLSurface                       dummy_egl_surface;
  51
  52         struct {
  53                 struct wl_display *wl_display;
  54                 struct wl_compositor *compositor;
  55                 struct wl_shell *shell;
  56                 struct wl_output *output;
  57
  58                 struct {
  59                         int32_t x, y, width, height;
  60                 } screen_allocation;
  61
  62                 struct wl_event_source *wl_source;
  63                 uint32_t event_mask;
  64         } parent;
  65
  66         struct {
  67                 int32_t top, bottom, left, right;
  68                 GLuint texture;
  69                 int32_t width, height;
  70         } border;
  71
  72         struct wl_list input_list;
  73 };
  74
  75 struct wayland_output {
  76         struct weston_output    base;
  77
  78         struct {
  79                 struct wl_surface       *surface;
  80                 struct wl_shell_surface *shell_surface;
  81                 struct wl_egl_window    *egl_window;
  82         } parent;
  83         EGLSurface egl_surface;
  84         struct weston_mode      mode;
  85 };
  86
  87 struct wayland_input {
  88         struct weston_seat base;
  89         struct wayland_compositor *compositor;
  90         struct wl_seat *seat;
  91         struct wl_pointer *pointer;
  92         struct wl_keyboard *keyboard;
  93         struct wl_touch *touch;
  94         struct wl_list link;
  95         uint32_t key_serial;
  96 };
  97
  98
  99 static int
 100 texture_border(struct wayland_output *output)
 101 {
 102         struct wayland_compositor *c =
 103                 (struct wayland_compositor *) output->base.compositor;
 104         GLfloat *d;
 105         unsigned int *p;
 106         int i, j, k, n;
 107         GLfloat x[4], y[4], u[4], v[4];
 108
 109         x[0] = -c->border.left;
 110         x[1] = 0;
 111         x[2] = output->base.current->width;
 112         x[3] = output->base.current->width + c->border.right;
 113
 114         y[0] = -c->border.top;
 115         y[1] = 0;
 116         y[2] = output->base.current->height;
 117         y[3] = output->base.current->height + c->border.bottom;
 118
 119         u[0] = 0.0;
 120         u[1] = (GLfloat) c->border.left / c->border.width;
 121         u[2] = (GLfloat) (c->border.width - c->border.right) / c->border.width;
 122         u[3] = 1.0;
 123
 124         v[0] = 0.0;
 125         v[1] = (GLfloat) c->border.top / c->border.height;
 126         v[2] = (GLfloat) (c->border.height - c->border.bottom) / c->border.height;
 127         v[3] = 1.0;
 128
 129         n = 8;
 130         d = wl_array_add(&c->base.vertices, n * 16 * sizeof *d);
 131         p = wl_array_add(&c->base.indices, n * 6 * sizeof *p);
 132
 133         k = 0;
 134         for (i = 0; i < 3; i++)
 135                 for (j = 0; j < 3; j++) {
 136
 137                         if (i == 1 && j == 1)
 138                                 continue;
 139
 140                         d[ 0] = x[i];
 141                         d[ 1] = y[j];
 142                         d[ 2] = u[i];
 143                         d[ 3] = v[j];
 144
 145                         d[ 4] = x[i];
 146                         d[ 5] = y[j + 1];
 147                         d[ 6] = u[i];
 148                         d[ 7] = v[j + 1];
 149
 150                         d[ 8] = x[i + 1];
 151                         d[ 9] = y[j];
 152                         d[10] = u[i + 1];
 153                         d[11] = v[j];
 154
 155                         d[12] = x[i + 1];
 156                         d[13] = y[j + 1];
 157                         d[14] = u[i + 1];
 158                         d[15] = v[j + 1];
 159
 160                         p[0] = k + 0;
 161                         p[1] = k + 1;
 162                         p[2] = k + 2;
 163                         p[3] = k + 2;
 164                         p[4] = k + 1;
 165                         p[5] = k + 3;
 166
 167                         d += 16;
 168                         p += 6;
 169                         k += 4;
 170                 }
 171
 172         return k / 4;
 173 }
 174
 175 static void
 176 draw_border(struct wayland_output *output)
 177 {
 178         struct wayland_compositor *c =
 179                 (struct wayland_compositor *) output->base.compositor;
 180         struct weston_shader *shader = &c->base.texture_shader_rgba;
 181         GLfloat *v;
 182         int n;
 183
 184         glDisable(GL_BLEND);
 185         glUseProgram(shader->program);
 186         c->base.current_shader = shader;
 187
 188         glUniformMatrix4fv(shader->proj_uniform,
 189                            1, GL_FALSE, output->base.matrix.d);
 190
 191         glUniform1i(shader->tex_uniforms[0], 0);
 192         glUniform1f(shader->alpha_uniform, 1);
 193         glUniform1f(shader->texwidth_uniform, 1);
 194
 195         n = texture_border(output);
 196
 197         glBindTexture(GL_TEXTURE_2D, c->border.texture);
 198
 199         v = c->base.vertices.data;
 200         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 201         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 202         glEnableVertexAttribArray(0);
 203         glEnableVertexAttribArray(1);
 204
 205         glDrawElements(GL_TRIANGLES, n * 6,
 206                        GL_UNSIGNED_INT, c->base.indices.data);
 207
 208         glDisableVertexAttribArray(1);
 209         glDisableVertexAttribArray(0);
 210
 211         c->base.vertices.size = 0;
 212         c->base.indices.size = 0;
 213 }
 214
 215 static void
 216 create_border(struct wayland_compositor *c)
 217 {
 218         pixman_image_t *image;
 219
 220         image = load_image(DATADIR "/weston/border.png");
 221         if (!image) {
 222                 weston_log("could'nt load border image\n");
 223                 return;
 224         }
 225
 226         c->border.width = pixman_image_get_width(image);
 227         c->border.height = pixman_image_get_height(image);
 228
 229         glGenTextures(1, &c->border.texture);
 230         glBindTexture(GL_TEXTURE_2D, c->border.texture);
 231         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 232         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 233         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 234         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 235
 236         glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 237                      c->border.width,
 238                      c->border.height,
 239                      0, GL_BGRA_EXT, GL_UNSIGNED_BYTE,
 240                      pixman_image_get_data(image));
 241
 242         c->border.top = 25;
 243         c->border.bottom = 50;
 244         c->border.left = 25;
 245         c->border.right = 25;
 246
 247         pixman_image_unref(image);
 248 }
 249
 250 static int
 251 wayland_compositor_init_egl(struct wayland_compositor *c)
 252 {
 253         EGLint major, minor;
 254         EGLint n;
 255         EGLint config_attribs[] = {
 256                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 257                 EGL_RED_SIZE, 1,
 258                 EGL_GREEN_SIZE, 1,
 259                 EGL_BLUE_SIZE, 1,
 260                 EGL_ALPHA_SIZE, 1,
 261                 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
 262                 EGL_NONE
 263         };
 264         static const EGLint context_attribs[] = {
 265                 EGL_CONTEXT_CLIENT_VERSION, 2,
 266                 EGL_NONE
 267         };
 268
 269         c->base.egl_display = eglGetDisplay(c->parent.wl_display);
 270         if (c->base.egl_display == NULL) {
 271                 weston_log("failed to create display\n");
 272                 return -1;
 273         }
 274
 275         if (!eglInitialize(c->base.egl_display, &major, &minor)) {
 276                 weston_log("failed to initialize display\n");
 277                 return -1;
 278         }
 279
 280         if (!eglBindAPI(EGL_OPENGL_ES_API)) {
 281                 weston_log("failed to bind EGL_OPENGL_ES_API\n");
 282                 return -1;
 283         }
 284         if (!eglChooseConfig(c->base.egl_display, config_attribs,
 285                              &c->base.egl_config, 1, &n) || n == 0) {
 286                 weston_log("failed to choose config: %d\n", n);
 287                 return -1;
 288         }
 289
 290         c->base.egl_context =
 291                 eglCreateContext(c->base.egl_display, c->base.egl_config,
 292                                  EGL_NO_CONTEXT, context_attribs);
 293         if (c->base.egl_context == NULL) {
 294                 weston_log("failed to create context\n");
 295                 return -1;
 296         }
 297
 298         c->dummy_pixmap = wl_egl_pixmap_create(10, 10, 0);
 299         if (!c->dummy_pixmap) {
 300                 weston_log("failure to create dummy_pixmap\n");
 301                 return -1;
 302         }
 303
 304         c->dummy_egl_surface =
 305                 eglCreatePixmapSurface(c->base.egl_display, c->base.egl_config,
 306                                        c->dummy_pixmap, NULL);
 307         if (!eglMakeCurrent(c->base.egl_display, c->dummy_egl_surface,
 308                             c->dummy_egl_surface, c->base.egl_context)) {
 309                 weston_log("failed to make context current\n");
 310                 return -1;
 311         }
 312
 313         return 0;
 314 }
 315
 316 static void
 317 frame_done(void *data, struct wl_callback *callback, uint32_t time)
 318 {
 319         struct weston_output *output = data;
 320
 321         wl_callback_destroy(callback);
 322         weston_output_finish_frame(output, time);
 323 }
 324
 325 static const struct wl_callback_listener frame_listener = {
 326         frame_done
 327 };
 328
 329 static void
 330 wayland_output_repaint(struct weston_output *output_base,
 331                        pixman_region32_t *damage)
 332 {
 333         struct wayland_output *output = (struct wayland_output *) output_base;
 334         struct wayland_compositor *compositor =
 335                 (struct wayland_compositor *) output->base.compositor;
 336         struct wl_callback *callback;
 337         struct weston_surface *surface;
 338
 339         if (!eglMakeCurrent(compositor->base.egl_display, output->egl_surface,
 340                             output->egl_surface,
 341                             compositor->base.egl_context)) {
 342                 weston_log("failed to make current\n");
 343                 return;
 344         }
 345
 346         wl_list_for_each_reverse(surface, &compositor->base.surface_list, link)
 347                 weston_surface_draw(surface, &output->base, damage);
 348
 349         draw_border(output);
 350
 351         wl_signal_emit(&output->base.frame_signal, output);
 352
 353         eglSwapBuffers(compositor->base.egl_display, output->egl_surface);
 354         callback = wl_surface_frame(output->parent.surface);
 355         wl_callback_add_listener(callback, &frame_listener, output);
 356
 357         return;
 358 }
 359
 360 static void
 361 wayland_output_destroy(struct weston_output *output_base)
 362 {
 363         struct wayland_output *output = (struct wayland_output *) output_base;
 364         struct weston_compositor *ec = output->base.compositor;
 365
 366         eglDestroySurface(ec->egl_display, output->egl_surface);
 367         wl_egl_window_destroy(output->parent.egl_window);
 368         free(output);
 369
 370         return;
 371 }
 372
 373 static const struct wl_shell_surface_listener shell_surface_listener;
 374
 375 static int
 376 wayland_compositor_create_output(struct wayland_compositor *c,
 377                                  int width, int height)
 378 {
 379         struct wayland_output *output;
 380
 381         output = malloc(sizeof *output);
 382         if (output == NULL)
 383                 return -1;
 384         memset(output, 0, sizeof *output);
 385
 386         output->mode.flags =
 387                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 388         output->mode.width = width;
 389         output->mode.height = height;
 390         output->mode.refresh = 60;
 391         wl_list_init(&output->base.mode_list);
 392         wl_list_insert(&output->base.mode_list, &output->mode.link);
 393
 394         output->base.current = &output->mode;
 395         weston_output_init(&output->base, &c->base, 0, 0, width, height);
 396
 397         output->base.border.top = c->border.top;
 398         output->base.border.bottom = c->border.bottom;
 399         output->base.border.left = c->border.left;
 400         output->base.border.right = c->border.right;
 401
 402         weston_output_move(&output->base, 0, 0);
 403
 404         output->parent.surface =
 405                 wl_compositor_create_surface(c->parent.compositor);
 406         wl_surface_set_user_data(output->parent.surface, output);
 407
 408         output->parent.egl_window =
 409                 wl_egl_window_create(output->parent.surface,
 410                                      width + c->border.left + c->border.right,
 411                                      height + c->border.top + c->border.bottom);
 412         if (!output->parent.egl_window) {
 413                 weston_log("failure to create wl_egl_window\n");
 414                 goto cleanup_output;
 415         }
 416
 417         output->egl_surface =
 418                 eglCreateWindowSurface(c->base.egl_display, c->base.egl_config,
 419                                        output->parent.egl_window, NULL);
 420         if (!output->egl_surface) {
 421                 weston_log("failed to create window surface\n");
 422                 goto cleanup_window;
 423         }
 424
 425         if (!eglMakeCurrent(c->base.egl_display, output->egl_surface,
 426                             output->egl_surface, c->base.egl_context)) {
 427                 weston_log("failed to make surface current\n");
 428                 goto cleanup_surface;
 429                 return -1;
 430         }
 431
 432         output->parent.shell_surface =
 433                 wl_shell_get_shell_surface(c->parent.shell,
 434                                            output->parent.surface);
 435         wl_shell_surface_add_listener(output->parent.shell_surface,
 436                                       &shell_surface_listener, output);
 437         wl_shell_surface_set_toplevel(output->parent.shell_surface);
 438
 439         output->base.origin = output->base.current;
 440         output->base.repaint = wayland_output_repaint;
 441         output->base.destroy = wayland_output_destroy;
 442         output->base.assign_planes = NULL;
 443         output->base.set_backlight = NULL;
 444         output->base.set_dpms = NULL;
 445         output->base.switch_mode = NULL;
 446
 447         wl_list_insert(c->base.output_list.prev, &output->base.link);
 448
 449         return 0;
 450
 451 cleanup_surface:
 452         eglDestroySurface(c->base.egl_display, output->egl_surface);
 453 cleanup_window:
 454         wl_egl_window_destroy(output->parent.egl_window);
 455 cleanup_output:
 456         /* FIXME: cleanup weston_output */
 457         free(output);
 458
 459         return -1;
 460 }
 461
 462 static void
 463 shell_surface_ping(void *data, struct wl_shell_surface *shell_surface,
 464                    uint32_t serial)
 465 {
 466         wl_shell_surface_pong(shell_surface, serial);
 467 }
 468
 469 static void
 470 shell_surface_configure(void *data, struct wl_shell_surface *shell_surface,
 471                         uint32_t edges, int32_t width, int32_t height)
 472 {
 473         /* FIXME: implement resizing */
 474 }
 475
 476 static void
 477 shell_surface_popup_done(void *data, struct wl_shell_surface *shell_surface)
 478 {
 479 }
 480
 481 static const struct wl_shell_surface_listener shell_surface_listener = {
 482         shell_surface_ping,
 483         shell_surface_configure,
 484         shell_surface_popup_done
 485 };
 486
 487 /* Events received from the wayland-server this compositor is client of: */
 488
 489 /* parent output interface */
 490 static void
 491 display_handle_geometry(void *data,
 492                         struct wl_output *wl_output,
 493                         int x,
 494                         int y,
 495                         int physical_width,
 496                         int physical_height,
 497                         int subpixel,
 498                         const char *make,
 499                         const char *model,
 500                         int transform)
 501 {
 502         struct wayland_compositor *c = data;
 503
 504         c->parent.screen_allocation.x = x;
 505         c->parent.screen_allocation.y = y;
 506 }
 507
 508 static void
 509 display_handle_mode(void *data,
 510                     struct wl_output *wl_output,
 511                     uint32_t flags,
 512                     int width,
 513                     int height,
 514                     int refresh)
 515 {
 516         struct wayland_compositor *c = data;
 517
 518         c->parent.screen_allocation.width = width;
 519         c->parent.screen_allocation.height = height;
 520 }
 521
 522 static const struct wl_output_listener output_listener = {
 523         display_handle_geometry,
 524         display_handle_mode
 525 };
 526
 527 /* parent input interface */
 528 static void
 529 input_handle_pointer_enter(void *data, struct wl_pointer *pointer,
 530                            uint32_t serial, struct wl_surface *surface,
 531                            wl_fixed_t x, wl_fixed_t y)
 532 {
 533         struct wayland_input *input = data;
 534         struct wayland_output *output;
 535
 536         /* XXX: If we get a modifier event immediately before the focus,
 537          *      we should try to keep the same serial. */
 538         output = wl_surface_get_user_data(surface);
 539         notify_pointer_focus(&input->base, &output->base, x, y);
 540         wl_pointer_set_cursor(input->pointer, serial, NULL, 0, 0);
 541 }
 542
 543 static void
 544 input_handle_pointer_leave(void *data, struct wl_pointer *pointer,
 545                            uint32_t serial, struct wl_surface *surface)
 546 {
 547         struct wayland_input *input = data;
 548
 549         notify_pointer_focus(&input->base, NULL, 0, 0);
 550 }
 551
 552 static void
 553 input_handle_motion(void *data, struct wl_pointer *pointer,
 554                     uint32_t time, wl_fixed_t x, wl_fixed_t y)
 555 {
 556         struct wayland_input *input = data;
 557         struct wayland_compositor *c = input->compositor;
 558
 559         notify_motion(&input->base, time,
 560                       x - wl_fixed_from_int(c->border.left),
 561                       y - wl_fixed_from_int(c->border.top));
 562 }
 563
 564 static void
 565 input_handle_button(void *data, struct wl_pointer *pointer,
 566                     uint32_t serial, uint32_t time, uint32_t button,
 567                     uint32_t state_w)
 568 {
 569         struct wayland_input *input = data;
 570         enum wl_pointer_button_state state = state_w;
 571
 572         notify_button(&input->base, time, button, state);
 573 }
 574
 575 static void
 576 input_handle_axis(void *data, struct wl_pointer *pointer,
 577                   uint32_t time, uint32_t axis, wl_fixed_t value)
 578 {
 579         struct wayland_input *input = data;
 580
 581         notify_axis(&input->base, time, axis, value);
 582 }
 583
 584 static const struct wl_pointer_listener pointer_listener = {
 585         input_handle_pointer_enter,
 586         input_handle_pointer_leave,
 587         input_handle_motion,
 588         input_handle_button,
 589         input_handle_axis,
 590 };
 591
 592 static void
 593 input_handle_keymap(void *data, struct wl_keyboard *keyboard, uint32_t format,
 594                     int fd, uint32_t size)
 595 {
 596         struct wayland_input *input = data;
 597         struct xkb_keymap *keymap;
 598         char *map_str;
 599
 600         if (!data) {
 601                 close(fd);
 602                 return;
 603         }
 604
 605         if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
 606                 close(fd);
 607                 return;
 608         }
 609
 610         map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
 611         if (map_str == MAP_FAILED) {
 612                 close(fd);
 613                 return;
 614         }
 615
 616         keymap = xkb_map_new_from_string(input->compositor->base.xkb_context,
 617                                          map_str,
 618                                          XKB_KEYMAP_FORMAT_TEXT_V1,
 619                                          0);
 620         munmap(map_str, size);
 621         close(fd);
 622
 623         if (!keymap) {
 624                 weston_log("failed to compile keymap\n");
 625                 return;
 626         }
 627
 628         weston_seat_init_keyboard(&input->base, keymap);
 629         xkb_map_unref(keymap);
 630 }
 631
 632 static void
 633 input_handle_keyboard_enter(void *data,
 634                             struct wl_keyboard *keyboard,
 635                             uint32_t serial,
 636                             struct wl_surface *surface,
 637                             struct wl_array *keys)
 638 {
 639         struct wayland_input *input = data;
 640
 641         /* XXX: If we get a modifier event immediately before the focus,
 642          *      we should try to keep the same serial. */
 643         notify_keyboard_focus_in(&input->base, keys,
 644                                  STATE_UPDATE_AUTOMATIC);
 645 }
 646
 647 static void
 648 input_handle_keyboard_leave(void *data,
 649                             struct wl_keyboard *keyboard,
 650                             uint32_t serial,
 651                             struct wl_surface *surface)
 652 {
 653         struct wayland_input *input = data;
 654
 655         notify_keyboard_focus_out(&input->base);
 656 }
 657
 658 static void
 659 input_handle_key(void *data, struct wl_keyboard *keyboard,
 660                  uint32_t serial, uint32_t time, uint32_t key, uint32_t state)
 661 {
 662         struct wayland_input *input = data;
 663
 664         input->key_serial = serial;
 665         notify_key(&input->base, time, key,
 666                    state ? WL_KEYBOARD_KEY_STATE_PRESSED :
 667                            WL_KEYBOARD_KEY_STATE_RELEASED,
 668                    STATE_UPDATE_NONE);
 669 }
 670
 671 static void
 672 input_handle_modifiers(void *data, struct wl_keyboard *keyboard,
 673                        uint32_t serial_in, uint32_t mods_depressed,
 674                        uint32_t mods_latched, uint32_t mods_locked,
 675                        uint32_t group)
 676 {
 677         struct wayland_input *input = data;
 678         struct wayland_compositor *c = input->compositor;
 679         uint32_t serial_out;
 680
 681         /* If we get a key event followed by a modifier event with the
 682          * same serial number, then we try to preserve those semantics by
 683          * reusing the same serial number on the way out too. */
 684         if (serial_in == input->key_serial)
 685                 serial_out = wl_display_get_serial(c->base.wl_display);
 686         else
 687                 serial_out = wl_display_next_serial(c->base.wl_display);
 688
 689         xkb_state_update_mask(input->base.xkb_state.state,
 690                               mods_depressed, mods_latched,
 691                               mods_locked, 0, 0, group);
 692         notify_modifiers(&input->base, serial_out);
 693 }
 694
 695 static const struct wl_keyboard_listener keyboard_listener = {
 696         input_handle_keymap,
 697         input_handle_keyboard_enter,
 698         input_handle_keyboard_leave,
 699         input_handle_key,
 700         input_handle_modifiers,
 701 };
 702
 703 static void
 704 input_handle_capabilities(void *data, struct wl_seat *seat,
 705                           enum wl_seat_capability caps)
 706 {
 707         struct wayland_input *input = data;
 708
 709         if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
 710                 input->pointer = wl_seat_get_pointer(seat);
 711                 wl_pointer_set_user_data(input->pointer, input);
 712                 wl_pointer_add_listener(input->pointer, &pointer_listener,
 713                                         input);
 714                 weston_seat_init_pointer(&input->base);
 715         } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
 716                 wl_pointer_destroy(input->pointer);
 717                 input->pointer = NULL;
 718         }
 719
 720         if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
 721                 input->keyboard = wl_seat_get_keyboard(seat);
 722                 wl_keyboard_set_user_data(input->keyboard, input);
 723                 wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
 724                                          input);
 725         } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
 726                 wl_keyboard_destroy(input->keyboard);
 727                 input->keyboard = NULL;
 728         }
 729 }
 730
 731 static const struct wl_seat_listener seat_listener = {
 732         input_handle_capabilities,
 733 };
 734
 735 static void
 736 display_add_seat(struct wayland_compositor *c, uint32_t id)
 737 {
 738         struct wayland_input *input;
 739
 740         input = malloc(sizeof *input);
 741         if (input == NULL)
 742                 return;
 743
 744         memset(input, 0, sizeof *input);
 745
 746         weston_seat_init(&input->base, &c->base);
 747         input->compositor = c;
 748         input->seat = wl_display_bind(c->parent.wl_display, id,
 749                                       &wl_seat_interface);
 750         wl_list_insert(c->input_list.prev, &input->link);
 751
 752         wl_seat_add_listener(input->seat, &seat_listener, input);
 753         wl_seat_set_user_data(input->seat, input);
 754 }
 755
 756 static void
 757 display_handle_global(struct wl_display *display, uint32_t id,
 758                       const char *interface, uint32_t version, void *data)
 759 {
 760         struct wayland_compositor *c = data;
 761
 762         if (strcmp(interface, "wl_compositor") == 0) {
 763                 c->parent.compositor =
 764                         wl_display_bind(display, id, &wl_compositor_interface);
 765         } else if (strcmp(interface, "wl_output") == 0) {
 766                 c->parent.output =
 767                         wl_display_bind(display, id, &wl_output_interface);
 768                 wl_output_add_listener(c->parent.output, &output_listener, c);
 769         } else if (strcmp(interface, "wl_shell") == 0) {
 770                 c->parent.shell =
 771                         wl_display_bind(display, id, &wl_shell_interface);
 772         } else if (strcmp(interface, "wl_seat") == 0) {
 773                 display_add_seat(c, id);
 774         }
 775 }
 776
 777 static int
 778 update_event_mask(uint32_t mask, void *data)
 779 {
 780         struct wayland_compositor *c = data;
 781
 782         c->parent.event_mask = mask;
 783         if (c->parent.wl_source)
 784                 wl_event_source_fd_update(c->parent.wl_source, mask);
 785
 786         return 0;
 787 }
 788
 789 static int
 790 wayland_compositor_handle_event(int fd, uint32_t mask, void *data)
 791 {
 792         struct wayland_compositor *c = data;
 793
 794         if (mask & WL_EVENT_READABLE)
 795                 wl_display_iterate(c->parent.wl_display, WL_DISPLAY_READABLE);
 796         if (mask & WL_EVENT_WRITABLE)
 797                 wl_display_iterate(c->parent.wl_display, WL_DISPLAY_WRITABLE);
 798
 799         return 1;
 800 }
 801
 802 static void
 803 wayland_restore(struct weston_compositor *ec)
 804 {
 805 }
 806
 807 static void
 808 wayland_destroy(struct weston_compositor *ec)
 809 {
 810         weston_compositor_shutdown(ec);
 811
 812         free(ec);
 813 }
 814
 815 static struct weston_compositor *
 816 wayland_compositor_create(struct wl_display *display,
 817                           int width, int height, const char *display_name,
 818                           int argc, char *argv[], const char *config_file)
 819 {
 820         struct wayland_compositor *c;
 821         struct wl_event_loop *loop;
 822         int fd;
 823
 824         c = malloc(sizeof *c);
 825         if (c == NULL)
 826                 return NULL;
 827
 828         memset(c, 0, sizeof *c);
 829
 830         if (weston_compositor_init(&c->base, display, argc, argv,
 831                                    config_file) < 0)
 832                 goto err_free;
 833
 834         c->parent.wl_display = wl_display_connect(display_name);
 835
 836         if (c->parent.wl_display == NULL) {
 837                 weston_log("failed to create display: %m\n");
 838                 goto err_compositor;
 839         }
 840
 841         wl_list_init(&c->input_list);
 842         wl_display_add_global_listener(c->parent.wl_display,
 843                                 display_handle_global, c);
 844
 845         wl_display_iterate(c->parent.wl_display, WL_DISPLAY_READABLE);
 846
 847         c->base.wl_display = display;
 848         if (wayland_compositor_init_egl(c) < 0)
 849                 goto err_display;
 850
 851         c->base.destroy = wayland_destroy;
 852         c->base.restore = wayland_restore;
 853
 854         if (weston_compositor_init_gl(&c->base) < 0)
 855                 goto err_display;
 856
 857         create_border(c);
 858         if (wayland_compositor_create_output(c, width, height) < 0)
 859                 goto err_display;
 860
 861         loop = wl_display_get_event_loop(c->base.wl_display);
 862
 863         fd = wl_display_get_fd(c->parent.wl_display, update_event_mask, c);
 864         c->parent.wl_source =
 865                 wl_event_loop_add_fd(loop, fd, c->parent.event_mask,
 866                                      wayland_compositor_handle_event, c);
 867         if (c->parent.wl_source == NULL)
 868                 goto err_display;
 869
 870         return &c->base;
 871
 872 err_display:
 873         wl_display_disconnect(c->parent.wl_display);
 874 err_compositor:
 875         weston_compositor_shutdown(&c->base);
 876 err_free:
 877         free(c);
 878         return NULL;
 879 }
 880
 881 WL_EXPORT struct weston_compositor *
 882 backend_init(struct wl_display *display, int argc, char *argv[],
 883              const char *config_file)
 884 {
 885         int width = 1024, height = 640;
 886         char *display_name = NULL;
 887
 888         const struct weston_option wayland_options[] = {
 889                 { WESTON_OPTION_INTEGER, "width", 0, &width },
 890                 { WESTON_OPTION_INTEGER, "height", 0, &height },
 891                 { WESTON_OPTION_STRING, "display", 0, &display_name },
 892         };
 893
 894         parse_options(wayland_options,
 895                       ARRAY_LENGTH(wayland_options), argc, argv);
 896
 897         return wayland_compositor_create(display, width, height, display_name,
 898                                          argc, argv, config_file);
 899 }