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         struct wl_listener      frame_listener;
  78         struct {
  79                 struct wl_surface       *surface;
  80                 struct wl_shell_surface *shell_surface;
  81                 struct wl_egl_window    *egl_window;
  82         } parent;
  83         struct weston_mode      mode;
  84 };
  85
  86 struct wayland_input {
  87         struct weston_seat base;
  88         struct wayland_compositor *compositor;
  89         struct wl_seat *seat;
  90         struct wl_pointer *pointer;
  91         struct wl_keyboard *keyboard;
  92         struct wl_touch *touch;
  93         struct wl_list link;
  94         uint32_t key_serial;
  95         uint32_t enter_serial;
  96         int focus;
  97         struct wayland_output *output;
  98 };
  99
 100
 101 static int
 102 texture_border(struct wayland_output *output)
 103 {
 104         struct wayland_compositor *c =
 105                 (struct wayland_compositor *) output->base.compositor;
 106         GLfloat *d;
 107         unsigned int *p;
 108         int i, j, k, n;
 109         GLfloat x[4], y[4], u[4], v[4];
 110
 111         x[0] = -c->border.left;
 112         x[1] = 0;
 113         x[2] = output->base.current->width;
 114         x[3] = output->base.current->width + c->border.right;
 115
 116         y[0] = -c->border.top;
 117         y[1] = 0;
 118         y[2] = output->base.current->height;
 119         y[3] = output->base.current->height + c->border.bottom;
 120
 121         u[0] = 0.0;
 122         u[1] = (GLfloat) c->border.left / c->border.width;
 123         u[2] = (GLfloat) (c->border.width - c->border.right) / c->border.width;
 124         u[3] = 1.0;
 125
 126         v[0] = 0.0;
 127         v[1] = (GLfloat) c->border.top / c->border.height;
 128         v[2] = (GLfloat) (c->border.height - c->border.bottom) / c->border.height;
 129         v[3] = 1.0;
 130
 131         n = 8;
 132         d = wl_array_add(&c->base.vertices, n * 16 * sizeof *d);
 133         p = wl_array_add(&c->base.indices, n * 6 * sizeof *p);
 134
 135         k = 0;
 136         for (i = 0; i < 3; i++)
 137                 for (j = 0; j < 3; j++) {
 138
 139                         if (i == 1 && j == 1)
 140                                 continue;
 141
 142                         d[ 0] = x[i];
 143                         d[ 1] = y[j];
 144                         d[ 2] = u[i];
 145                         d[ 3] = v[j];
 146
 147                         d[ 4] = x[i];
 148                         d[ 5] = y[j + 1];
 149                         d[ 6] = u[i];
 150                         d[ 7] = v[j + 1];
 151
 152                         d[ 8] = x[i + 1];
 153                         d[ 9] = y[j];
 154                         d[10] = u[i + 1];
 155                         d[11] = v[j];
 156
 157                         d[12] = x[i + 1];
 158                         d[13] = y[j + 1];
 159                         d[14] = u[i + 1];
 160                         d[15] = v[j + 1];
 161
 162                         p[0] = k + 0;
 163                         p[1] = k + 1;
 164                         p[2] = k + 2;
 165                         p[3] = k + 2;
 166                         p[4] = k + 1;
 167                         p[5] = k + 3;
 168
 169                         d += 16;
 170                         p += 6;
 171                         k += 4;
 172                 }
 173
 174         return k / 4;
 175 }
 176
 177 static void
 178 draw_border(struct wayland_output *output)
 179 {
 180         struct wayland_compositor *c =
 181                 (struct wayland_compositor *) output->base.compositor;
 182         struct weston_shader *shader = &c->base.texture_shader_rgba;
 183         GLfloat *v;
 184         int n;
 185
 186         glDisable(GL_BLEND);
 187         glUseProgram(shader->program);
 188         c->base.current_shader = shader;
 189
 190         glUniformMatrix4fv(shader->proj_uniform,
 191                            1, GL_FALSE, output->base.matrix.d);
 192
 193         glUniform1i(shader->tex_uniforms[0], 0);
 194         glUniform1f(shader->alpha_uniform, 1);
 195
 196         n = texture_border(output);
 197
 198         glBindTexture(GL_TEXTURE_2D, c->border.texture);
 199
 200         v = c->base.vertices.data;
 201         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
 202         glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
 203         glEnableVertexAttribArray(0);
 204         glEnableVertexAttribArray(1);
 205
 206         glDrawElements(GL_TRIANGLES, n * 6,
 207                        GL_UNSIGNED_INT, c->base.indices.data);
 208
 209         glDisableVertexAttribArray(1);
 210         glDisableVertexAttribArray(0);
 211
 212         c->base.vertices.size = 0;
 213         c->base.indices.size = 0;
 214 }
 215
 216 static void
 217 create_border(struct wayland_compositor *c)
 218 {
 219         pixman_image_t *image;
 220
 221         image = load_image(DATADIR "/weston/border.png");
 222         if (!image) {
 223                 weston_log("could'nt load border image\n");
 224                 return;
 225         }
 226
 227         c->border.width = pixman_image_get_width(image);
 228         c->border.height = pixman_image_get_height(image);
 229
 230         glGenTextures(1, &c->border.texture);
 231         glBindTexture(GL_TEXTURE_2D, c->border.texture);
 232         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 233         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 234         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 235         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 236
 237         glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
 238                      c->border.width,
 239                      c->border.height,
 240                      0, GL_BGRA_EXT, GL_UNSIGNED_BYTE,
 241                      pixman_image_get_data(image));
 242
 243         c->border.top = 25;
 244         c->border.bottom = 50;
 245         c->border.left = 25;
 246         c->border.right = 25;
 247
 248         pixman_image_unref(image);
 249 }
 250
 251 static int
 252 wayland_compositor_init_egl(struct wayland_compositor *c)
 253 {
 254         EGLint major, minor;
 255         EGLint n;
 256         EGLint config_attribs[] = {
 257                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 258                 EGL_RED_SIZE, 1,
 259                 EGL_GREEN_SIZE, 1,
 260                 EGL_BLUE_SIZE, 1,
 261                 EGL_ALPHA_SIZE, 1,
 262                 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
 263                 EGL_NONE
 264         };
 265         static const EGLint context_attribs[] = {
 266                 EGL_CONTEXT_CLIENT_VERSION, 2,
 267                 EGL_NONE
 268         };
 269
 270         c->base.egl_display = eglGetDisplay(c->parent.wl_display);
 271         if (c->base.egl_display == NULL) {
 272                 weston_log("failed to create display\n");
 273                 return -1;
 274         }
 275
 276         if (!eglInitialize(c->base.egl_display, &major, &minor)) {
 277                 weston_log("failed to initialize display\n");
 278                 return -1;
 279         }
 280
 281         if (!eglBindAPI(EGL_OPENGL_ES_API)) {
 282                 weston_log("failed to bind EGL_OPENGL_ES_API\n");
 283                 return -1;
 284         }
 285         if (!eglChooseConfig(c->base.egl_display, config_attribs,
 286                              &c->base.egl_config, 1, &n) || n == 0) {
 287                 weston_log("failed to choose config: %d\n", n);
 288                 return -1;
 289         }
 290
 291         c->base.egl_context =
 292                 eglCreateContext(c->base.egl_display, c->base.egl_config,
 293                                  EGL_NO_CONTEXT, context_attribs);
 294         if (c->base.egl_context == NULL) {
 295                 weston_log("failed to create context\n");
 296                 return -1;
 297         }
 298
 299         c->dummy_pixmap = wl_egl_pixmap_create(10, 10, 0);
 300         if (!c->dummy_pixmap) {
 301                 weston_log("failure to create dummy_pixmap\n");
 302                 return -1;
 303         }
 304
 305         c->dummy_egl_surface =
 306                 eglCreatePixmapSurface(c->base.egl_display, c->base.egl_config,
 307                                        c->dummy_pixmap, NULL);
 308         if (!eglMakeCurrent(c->base.egl_display, c->dummy_egl_surface,
 309                             c->dummy_egl_surface, c->base.egl_context)) {
 310                 weston_log("failed to make context current\n");
 311                 return -1;
 312         }
 313
 314         return 0;
 315 }
 316
 317 static void
 318 frame_done(void *data, struct wl_callback *callback, uint32_t time)
 319 {
 320         struct weston_output *output = data;
 321
 322         wl_callback_destroy(callback);
 323         weston_output_finish_frame(output, time);
 324 }
 325
 326 static const struct wl_callback_listener frame_listener = {
 327         frame_done
 328 };
 329
 330 static void
 331 wayland_output_frame_notify(struct wl_listener *listener, void *data)
 332 {
 333         struct wayland_output *output =
 334                 container_of(listener,
 335                              struct wayland_output, frame_listener);
 336
 337         draw_border(output);
 338 }
 339
 340 static void
 341 wayland_output_repaint(struct weston_output *output_base,
 342                        pixman_region32_t *damage)
 343 {
 344         struct wayland_output *output = (struct wayland_output *) output_base;
 345         struct wl_callback *callback;
 346
 347         gles2_renderer_repaint_output(output_base, damage);
 348
 349         callback = wl_surface_frame(output->parent.surface);
 350         wl_callback_add_listener(callback, &frame_listener, output);
 351
 352         return;
 353 }
 354
 355 static void
 356 wayland_output_destroy(struct weston_output *output_base)
 357 {
 358         struct wayland_output *output = (struct wayland_output *) output_base;
 359         struct weston_compositor *ec = output->base.compositor;
 360
 361         eglDestroySurface(ec->egl_display, output->base.egl_surface);
 362         wl_egl_window_destroy(output->parent.egl_window);
 363         free(output);
 364
 365         return;
 366 }
 367
 368 static const struct wl_shell_surface_listener shell_surface_listener;
 369
 370 static int
 371 wayland_compositor_create_output(struct wayland_compositor *c,
 372                                  int width, int height)
 373 {
 374         struct wayland_output *output;
 375
 376         output = malloc(sizeof *output);
 377         if (output == NULL)
 378                 return -1;
 379         memset(output, 0, sizeof *output);
 380
 381         output->mode.flags =
 382                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 383         output->mode.width = width;
 384         output->mode.height = height;
 385         output->mode.refresh = 60;
 386         wl_list_init(&output->base.mode_list);
 387         wl_list_insert(&output->base.mode_list, &output->mode.link);
 388
 389         output->base.current = &output->mode;
 390         weston_output_init(&output->base, &c->base, 0, 0, width, height,
 391                                                 WL_OUTPUT_TRANSFORM_NORMAL);
 392
 393         output->base.border.top = c->border.top;
 394         output->base.border.bottom = c->border.bottom;
 395         output->base.border.left = c->border.left;
 396         output->base.border.right = c->border.right;
 397         output->base.make = "waywayland";
 398         output->base.model = "none";
 399
 400         weston_output_move(&output->base, 0, 0);
 401
 402         output->parent.surface =
 403                 wl_compositor_create_surface(c->parent.compositor);
 404         wl_surface_set_user_data(output->parent.surface, output);
 405
 406         output->parent.egl_window =
 407                 wl_egl_window_create(output->parent.surface,
 408                                      width + c->border.left + c->border.right,
 409                                      height + c->border.top + c->border.bottom);
 410         if (!output->parent.egl_window) {
 411                 weston_log("failure to create wl_egl_window\n");
 412                 goto cleanup_output;
 413         }
 414
 415         output->base.egl_surface =
 416                 eglCreateWindowSurface(c->base.egl_display, c->base.egl_config,
 417                                        output->parent.egl_window, NULL);
 418         if (!output->base.egl_surface) {
 419                 weston_log("failed to create window surface\n");
 420                 goto cleanup_window;
 421         }
 422
 423         if (!eglMakeCurrent(c->base.egl_display, output->base.egl_surface,
 424                             output->base.egl_surface, c->base.egl_context)) {
 425                 weston_log("failed to make surface current\n");
 426                 goto cleanup_surface;
 427                 return -1;
 428         }
 429
 430         output->parent.shell_surface =
 431                 wl_shell_get_shell_surface(c->parent.shell,
 432                                            output->parent.surface);
 433         wl_shell_surface_add_listener(output->parent.shell_surface,
 434                                       &shell_surface_listener, output);
 435         wl_shell_surface_set_toplevel(output->parent.shell_surface);
 436
 437         output->base.origin = output->base.current;
 438         output->base.repaint = wayland_output_repaint;
 439         output->base.destroy = wayland_output_destroy;
 440         output->base.assign_planes = NULL;
 441         output->base.set_backlight = NULL;
 442         output->base.set_dpms = NULL;
 443         output->base.switch_mode = NULL;
 444
 445         wl_list_insert(c->base.output_list.prev, &output->base.link);
 446
 447         output->frame_listener.notify = wayland_output_frame_notify;
 448         wl_signal_add(&output->base.frame_signal, &output->frame_listener);
 449
 450         return 0;
 451
 452 cleanup_surface:
 453         eglDestroySurface(c->base.egl_display, output->base.egl_surface);
 454 cleanup_window:
 455         wl_egl_window_destroy(output->parent.egl_window);
 456 cleanup_output:
 457         /* FIXME: cleanup weston_output */
 458         free(output);
 459
 460         return -1;
 461 }
 462
 463 static void
 464 shell_surface_ping(void *data, struct wl_shell_surface *shell_surface,
 465                    uint32_t serial)
 466 {
 467         wl_shell_surface_pong(shell_surface, serial);
 468 }
 469
 470 static void
 471 shell_surface_configure(void *data, struct wl_shell_surface *shell_surface,
 472                         uint32_t edges, int32_t width, int32_t height)
 473 {
 474         /* FIXME: implement resizing */
 475 }
 476
 477 static void
 478 shell_surface_popup_done(void *data, struct wl_shell_surface *shell_surface)
 479 {
 480 }
 481
 482 static const struct wl_shell_surface_listener shell_surface_listener = {
 483         shell_surface_ping,
 484         shell_surface_configure,
 485         shell_surface_popup_done
 486 };
 487
 488 /* Events received from the wayland-server this compositor is client of: */
 489
 490 /* parent output interface */
 491 static void
 492 display_handle_geometry(void *data,
 493                         struct wl_output *wl_output,
 494                         int x,
 495                         int y,
 496                         int physical_width,
 497                         int physical_height,
 498                         int subpixel,
 499                         const char *make,
 500                         const char *model,
 501                         int transform)
 502 {
 503         struct wayland_compositor *c = data;
 504
 505         c->parent.screen_allocation.x = x;
 506         c->parent.screen_allocation.y = y;
 507 }
 508
 509 static void
 510 display_handle_mode(void *data,
 511                     struct wl_output *wl_output,
 512                     uint32_t flags,
 513                     int width,
 514                     int height,
 515                     int refresh)
 516 {
 517         struct wayland_compositor *c = data;
 518
 519         c->parent.screen_allocation.width = width;
 520         c->parent.screen_allocation.height = height;
 521 }
 522
 523 static const struct wl_output_listener output_listener = {
 524         display_handle_geometry,
 525         display_handle_mode
 526 };
 527
 528 static void
 529 check_focus(struct wayland_input *input, wl_fixed_t x, wl_fixed_t y)
 530 {
 531         struct wayland_compositor *c = input->compositor;
 532         int width, height, inside;
 533
 534         width = input->output->mode.width;
 535         height = input->output->mode.height;
 536
 537         inside = c->border.left <= wl_fixed_to_int(x) &&
 538                 wl_fixed_to_int(x) < width + c->border.left &&
 539                 c->border.top <= wl_fixed_to_int(y) &&
 540                 wl_fixed_to_int(y) < height + c->border.top;
 541
 542         if (!input->focus && inside) {
 543                 notify_pointer_focus(&input->base, &input->output->base,
 544                                      x - wl_fixed_from_int(c->border.left),
 545                                      y = wl_fixed_from_int(c->border.top));
 546                 wl_pointer_set_cursor(input->pointer,
 547                                       input->enter_serial, NULL, 0, 0);
 548         } else if (input->focus && !inside) {
 549                 notify_pointer_focus(&input->base, NULL, 0, 0);
 550                 /* FIXME: Should set default cursor here. */
 551         }
 552
 553         input->focus = inside;
 554 }
 555
 556 /* parent input interface */
 557 static void
 558 input_handle_pointer_enter(void *data, struct wl_pointer *pointer,
 559                            uint32_t serial, struct wl_surface *surface,
 560                            wl_fixed_t x, wl_fixed_t y)
 561 {
 562         struct wayland_input *input = data;
 563
 564         /* XXX: If we get a modifier event immediately before the focus,
 565          *      we should try to keep the same serial. */
 566         input->enter_serial = serial;
 567         input->output = wl_surface_get_user_data(surface);
 568         check_focus(input, x, y);
 569 }
 570
 571 static void
 572 input_handle_pointer_leave(void *data, struct wl_pointer *pointer,
 573                            uint32_t serial, struct wl_surface *surface)
 574 {
 575         struct wayland_input *input = data;
 576
 577         notify_pointer_focus(&input->base, NULL, 0, 0);
 578         input->output = NULL;
 579         input->focus = 0;
 580 }
 581
 582 static void
 583 input_handle_motion(void *data, struct wl_pointer *pointer,
 584                     uint32_t time, wl_fixed_t x, wl_fixed_t y)
 585 {
 586         struct wayland_input *input = data;
 587         struct wayland_compositor *c = input->compositor;
 588
 589         check_focus(input, x, y);
 590         if (input->focus)
 591                 notify_motion(&input->base, time,
 592                               x - wl_fixed_from_int(c->border.left),
 593                               y - wl_fixed_from_int(c->border.top));
 594 }
 595
 596 static void
 597 input_handle_button(void *data, struct wl_pointer *pointer,
 598                     uint32_t serial, uint32_t time, uint32_t button,
 599                     uint32_t state_w)
 600 {
 601         struct wayland_input *input = data;
 602         enum wl_pointer_button_state state = state_w;
 603
 604         notify_button(&input->base, time, button, state);
 605 }
 606
 607 static void
 608 input_handle_axis(void *data, struct wl_pointer *pointer,
 609                   uint32_t time, uint32_t axis, wl_fixed_t value)
 610 {
 611         struct wayland_input *input = data;
 612
 613         notify_axis(&input->base, time, axis, value);
 614 }
 615
 616 static const struct wl_pointer_listener pointer_listener = {
 617         input_handle_pointer_enter,
 618         input_handle_pointer_leave,
 619         input_handle_motion,
 620         input_handle_button,
 621         input_handle_axis,
 622 };
 623
 624 static void
 625 input_handle_keymap(void *data, struct wl_keyboard *keyboard, uint32_t format,
 626                     int fd, uint32_t size)
 627 {
 628         struct wayland_input *input = data;
 629         struct xkb_keymap *keymap;
 630         char *map_str;
 631
 632         if (!data) {
 633                 close(fd);
 634                 return;
 635         }
 636
 637         if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
 638                 close(fd);
 639                 return;
 640         }
 641
 642         map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
 643         if (map_str == MAP_FAILED) {
 644                 close(fd);
 645                 return;
 646         }
 647
 648         keymap = xkb_map_new_from_string(input->compositor->base.xkb_context,
 649                                          map_str,
 650                                          XKB_KEYMAP_FORMAT_TEXT_V1,
 651                                          0);
 652         munmap(map_str, size);
 653         close(fd);
 654
 655         if (!keymap) {
 656                 weston_log("failed to compile keymap\n");
 657                 return;
 658         }
 659
 660         weston_seat_init_keyboard(&input->base, keymap);
 661         xkb_map_unref(keymap);
 662 }
 663
 664 static void
 665 input_handle_keyboard_enter(void *data,
 666                             struct wl_keyboard *keyboard,
 667                             uint32_t serial,
 668                             struct wl_surface *surface,
 669                             struct wl_array *keys)
 670 {
 671         struct wayland_input *input = data;
 672
 673         /* XXX: If we get a modifier event immediately before the focus,
 674          *      we should try to keep the same serial. */
 675         notify_keyboard_focus_in(&input->base, keys,
 676                                  STATE_UPDATE_AUTOMATIC);
 677 }
 678
 679 static void
 680 input_handle_keyboard_leave(void *data,
 681                             struct wl_keyboard *keyboard,
 682                             uint32_t serial,
 683                             struct wl_surface *surface)
 684 {
 685         struct wayland_input *input = data;
 686
 687         notify_keyboard_focus_out(&input->base);
 688 }
 689
 690 static void
 691 input_handle_key(void *data, struct wl_keyboard *keyboard,
 692                  uint32_t serial, uint32_t time, uint32_t key, uint32_t state)
 693 {
 694         struct wayland_input *input = data;
 695
 696         input->key_serial = serial;
 697         notify_key(&input->base, time, key,
 698                    state ? WL_KEYBOARD_KEY_STATE_PRESSED :
 699                            WL_KEYBOARD_KEY_STATE_RELEASED,
 700                    STATE_UPDATE_NONE);
 701 }
 702
 703 static void
 704 input_handle_modifiers(void *data, struct wl_keyboard *keyboard,
 705                        uint32_t serial_in, uint32_t mods_depressed,
 706                        uint32_t mods_latched, uint32_t mods_locked,
 707                        uint32_t group)
 708 {
 709         struct wayland_input *input = data;
 710         struct wayland_compositor *c = input->compositor;
 711         uint32_t serial_out;
 712
 713         /* If we get a key event followed by a modifier event with the
 714          * same serial number, then we try to preserve those semantics by
 715          * reusing the same serial number on the way out too. */
 716         if (serial_in == input->key_serial)
 717                 serial_out = wl_display_get_serial(c->base.wl_display);
 718         else
 719                 serial_out = wl_display_next_serial(c->base.wl_display);
 720
 721         xkb_state_update_mask(input->base.xkb_state.state,
 722                               mods_depressed, mods_latched,
 723                               mods_locked, 0, 0, group);
 724         notify_modifiers(&input->base, serial_out);
 725 }
 726
 727 static const struct wl_keyboard_listener keyboard_listener = {
 728         input_handle_keymap,
 729         input_handle_keyboard_enter,
 730         input_handle_keyboard_leave,
 731         input_handle_key,
 732         input_handle_modifiers,
 733 };
 734
 735 static void
 736 input_handle_capabilities(void *data, struct wl_seat *seat,
 737                           enum wl_seat_capability caps)
 738 {
 739         struct wayland_input *input = data;
 740
 741         if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
 742                 input->pointer = wl_seat_get_pointer(seat);
 743                 wl_pointer_set_user_data(input->pointer, input);
 744                 wl_pointer_add_listener(input->pointer, &pointer_listener,
 745                                         input);
 746                 weston_seat_init_pointer(&input->base);
 747         } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
 748                 wl_pointer_destroy(input->pointer);
 749                 input->pointer = NULL;
 750         }
 751
 752         if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
 753                 input->keyboard = wl_seat_get_keyboard(seat);
 754                 wl_keyboard_set_user_data(input->keyboard, input);
 755                 wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
 756                                          input);
 757         } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
 758                 wl_keyboard_destroy(input->keyboard);
 759                 input->keyboard = NULL;
 760         }
 761 }
 762
 763 static const struct wl_seat_listener seat_listener = {
 764         input_handle_capabilities,
 765 };
 766
 767 static void
 768 display_add_seat(struct wayland_compositor *c, uint32_t id)
 769 {
 770         struct wayland_input *input;
 771
 772         input = malloc(sizeof *input);
 773         if (input == NULL)
 774                 return;
 775
 776         memset(input, 0, sizeof *input);
 777
 778         weston_seat_init(&input->base, &c->base);
 779         input->compositor = c;
 780         input->seat = wl_display_bind(c->parent.wl_display, id,
 781                                       &wl_seat_interface);
 782         wl_list_insert(c->input_list.prev, &input->link);
 783
 784         wl_seat_add_listener(input->seat, &seat_listener, input);
 785         wl_seat_set_user_data(input->seat, input);
 786 }
 787
 788 static void
 789 display_handle_global(struct wl_display *display, uint32_t id,
 790                       const char *interface, uint32_t version, void *data)
 791 {
 792         struct wayland_compositor *c = data;
 793
 794         if (strcmp(interface, "wl_compositor") == 0) {
 795                 c->parent.compositor =
 796                         wl_display_bind(display, id, &wl_compositor_interface);
 797         } else if (strcmp(interface, "wl_output") == 0) {
 798                 c->parent.output =
 799                         wl_display_bind(display, id, &wl_output_interface);
 800                 wl_output_add_listener(c->parent.output, &output_listener, c);
 801         } else if (strcmp(interface, "wl_shell") == 0) {
 802                 c->parent.shell =
 803                         wl_display_bind(display, id, &wl_shell_interface);
 804         } else if (strcmp(interface, "wl_seat") == 0) {
 805                 display_add_seat(c, id);
 806         }
 807 }
 808
 809 static int
 810 update_event_mask(uint32_t mask, void *data)
 811 {
 812         struct wayland_compositor *c = data;
 813
 814         c->parent.event_mask = mask;
 815         if (c->parent.wl_source)
 816                 wl_event_source_fd_update(c->parent.wl_source, mask);
 817
 818         return 0;
 819 }
 820
 821 static int
 822 wayland_compositor_handle_event(int fd, uint32_t mask, void *data)
 823 {
 824         struct wayland_compositor *c = data;
 825
 826         if (mask & WL_EVENT_READABLE)
 827                 wl_display_iterate(c->parent.wl_display, WL_DISPLAY_READABLE);
 828         if (mask & WL_EVENT_WRITABLE)
 829                 wl_display_iterate(c->parent.wl_display, WL_DISPLAY_WRITABLE);
 830
 831         return 1;
 832 }
 833
 834 static void
 835 wayland_restore(struct weston_compositor *ec)
 836 {
 837 }
 838
 839 static void
 840 wayland_destroy(struct weston_compositor *ec)
 841 {
 842         weston_compositor_shutdown(ec);
 843
 844         free(ec);
 845 }
 846
 847 static struct weston_compositor *
 848 wayland_compositor_create(struct wl_display *display,
 849                           int width, int height, const char *display_name,
 850                           int argc, char *argv[], const char *config_file)
 851 {
 852         struct wayland_compositor *c;
 853         struct wl_event_loop *loop;
 854         int fd;
 855
 856         c = malloc(sizeof *c);
 857         if (c == NULL)
 858                 return NULL;
 859
 860         memset(c, 0, sizeof *c);
 861
 862         if (weston_compositor_init(&c->base, display, argc, argv,
 863                                    config_file) < 0)
 864                 goto err_free;
 865
 866         c->parent.wl_display = wl_display_connect(display_name);
 867
 868         if (c->parent.wl_display == NULL) {
 869                 weston_log("failed to create display: %m\n");
 870                 goto err_compositor;
 871         }
 872
 873         wl_list_init(&c->input_list);
 874         wl_display_add_global_listener(c->parent.wl_display,
 875                                 display_handle_global, c);
 876
 877         wl_display_iterate(c->parent.wl_display, WL_DISPLAY_READABLE);
 878
 879         c->base.wl_display = display;
 880         if (wayland_compositor_init_egl(c) < 0)
 881                 goto err_display;
 882
 883         c->base.destroy = wayland_destroy;
 884         c->base.restore = wayland_restore;
 885
 886         if (weston_compositor_init_gl(&c->base) < 0)
 887                 goto err_display;
 888
 889         create_border(c);
 890         if (wayland_compositor_create_output(c, width, height) < 0)
 891                 goto err_display;
 892
 893         loop = wl_display_get_event_loop(c->base.wl_display);
 894
 895         fd = wl_display_get_fd(c->parent.wl_display, update_event_mask, c);
 896         c->parent.wl_source =
 897                 wl_event_loop_add_fd(loop, fd, c->parent.event_mask,
 898                                      wayland_compositor_handle_event, c);
 899         if (c->parent.wl_source == NULL)
 900                 goto err_display;
 901
 902         return &c->base;
 903
 904 err_display:
 905         wl_display_disconnect(c->parent.wl_display);
 906 err_compositor:
 907         weston_compositor_shutdown(&c->base);
 908 err_free:
 909         free(c);
 910         return NULL;
 911 }
 912
 913 WL_EXPORT struct weston_compositor *
 914 backend_init(struct wl_display *display, int argc, char *argv[],
 915              const char *config_file)
 916 {
 917         int width = 1024, height = 640;
 918         char *display_name = NULL;
 919
 920         const struct weston_option wayland_options[] = {
 921                 { WESTON_OPTION_INTEGER, "width", 0, &width },
 922                 { WESTON_OPTION_INTEGER, "height", 0, &height },
 923                 { WESTON_OPTION_STRING, "display", 0, &display_name },
 924         };
 925
 926         parse_options(wayland_options,
 927                       ARRAY_LENGTH(wayland_options), argc, argv);
 928
 929         return wayland_compositor_create(display, width, height, display_name,
 930                                          argc, argv, config_file);
 931 }