src/compositor-x11.c

   1 /*
   2  * Copyright © 2008-2011 Kristian Høgsberg
   3  * Copyright © 2010-2011 Intel Corporation
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and
   6  * its documentation for any purpose is hereby granted without fee, provided
   7  * that the above copyright notice appear in all copies and that both that
   8  * copyright notice and this permission notice appear in supporting
   9  * documentation, and that the name of the copyright holders not be used in
  10  * advertising or publicity pertaining to distribution of the software
  11  * without specific, written prior permission.  The copyright holders make
  12  * no representations about the suitability of this software for any
  13  * purpose.  It is provided "as is" without express or implied warranty.
  14  *
  15  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  16  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  17  * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  18  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  19  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  20  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  21  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <stddef.h>
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <fcntl.h>
  33 #include <unistd.h>
  34 #include <errno.h>
  35 #include <sys/time.h>
  36 #include <linux/input.h>
  37
  38 #include <xcb/xcb.h>
  39 #include <X11/Xlib.h>
  40 #include <X11/Xlib-xcb.h>
  41
  42 #include <GLES2/gl2.h>
  43 #include <EGL/egl.h>
  44
  45 #include "compositor.h"
  46
  47 struct x11_compositor {
  48         struct weston_compositor         base;
  49
  50         Display                 *dpy;
  51         xcb_connection_t        *conn;
  52         xcb_screen_t            *screen;
  53         xcb_cursor_t             null_cursor;
  54         struct wl_array          keys;
  55         struct wl_event_source  *xcb_source;
  56         struct {
  57                 xcb_atom_t               wm_protocols;
  58                 xcb_atom_t               wm_normal_hints;
  59                 xcb_atom_t               wm_size_hints;
  60                 xcb_atom_t               wm_delete_window;
  61                 xcb_atom_t               wm_class;
  62                 xcb_atom_t               net_wm_name;
  63                 xcb_atom_t               net_wm_icon;
  64                 xcb_atom_t               net_wm_state;
  65                 xcb_atom_t               net_wm_state_fullscreen;
  66                 xcb_atom_t               string;
  67                 xcb_atom_t               utf8_string;
  68                 xcb_atom_t               cardinal;
  69         } atom;
  70 };
  71
  72 struct x11_output {
  73         struct weston_output    base;
  74
  75         xcb_window_t            window;
  76         EGLSurface              egl_surface;
  77         struct weston_mode      mode;
  78         struct wl_event_source *finish_frame_timer;
  79 };
  80
  81 struct x11_input {
  82         struct weston_input_device base;
  83 };
  84
  85
  86 static int
  87 x11_input_create(struct x11_compositor *c)
  88 {
  89         struct x11_input *input;
  90
  91         input = malloc(sizeof *input);
  92         if (input == NULL)
  93                 return -1;
  94
  95         memset(input, 0, sizeof *input);
  96         weston_input_device_init(&input->base, &c->base);
  97
  98         c->base.input_device = &input->base.input_device;
  99
 100         return 0;
 101 }
 102
 103 static void
 104 x11_input_destroy(struct x11_compositor *compositor)
 105 {
 106         struct x11_input *input = container_of(compositor->base.input_device,
 107                                                struct x11_input,
 108                                                base.input_device);
 109
 110         weston_input_device_release(&input->base);
 111         free(input);
 112 }
 113
 114 static int
 115 x11_compositor_init_egl(struct x11_compositor *c)
 116 {
 117         EGLint major, minor;
 118         EGLint n;
 119         const char *extensions;
 120         EGLint config_attribs[] = {
 121                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 122                 EGL_RED_SIZE, 1,
 123                 EGL_GREEN_SIZE, 1,
 124                 EGL_BLUE_SIZE, 1,
 125                 EGL_DEPTH_SIZE, 1,
 126                 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
 127                 EGL_NONE
 128         };
 129         static const EGLint context_attribs[] = {
 130                 EGL_CONTEXT_CLIENT_VERSION, 2,
 131                 EGL_NONE
 132         };
 133
 134         c->base.display = eglGetDisplay(c->dpy);
 135         if (c->base.display == NULL) {
 136                 fprintf(stderr, "failed to create display\n");
 137                 return -1;
 138         }
 139
 140         if (!eglInitialize(c->base.display, &major, &minor)) {
 141                 fprintf(stderr, "failed to initialize display\n");
 142                 return -1;
 143         }
 144
 145         extensions = eglQueryString(c->base.display, EGL_EXTENSIONS);
 146         if (!strstr(extensions, "EGL_KHR_surfaceless_gles2")) {
 147                 fprintf(stderr, "EGL_KHR_surfaceless_gles2 not available\n");
 148                 return -1;
 149         }
 150
 151         if (!eglBindAPI(EGL_OPENGL_ES_API)) {
 152                 fprintf(stderr, "failed to bind EGL_OPENGL_ES_API\n");
 153                 return -1;
 154         }
 155         if (!eglChooseConfig(c->base.display, config_attribs,
 156                              &c->base.config, 1, &n) || n == 0) {
 157                 fprintf(stderr, "failed to choose config: %d\n", n);
 158                 return -1;
 159         }
 160
 161         c->base.context = eglCreateContext(c->base.display, c->base.config,
 162                                            EGL_NO_CONTEXT, context_attribs);
 163         if (c->base.context == NULL) {
 164                 fprintf(stderr, "failed to create context\n");
 165                 return -1;
 166         }
 167
 168         if (!eglMakeCurrent(c->base.display, EGL_NO_SURFACE,
 169                             EGL_NO_SURFACE, c->base.context)) {
 170                 fprintf(stderr, "failed to make context current\n");
 171                 return -1;
 172         }
 173
 174         return 0;
 175 }
 176
 177 static void
 178 x11_compositor_fini_egl(struct x11_compositor *compositor)
 179 {
 180         eglMakeCurrent(compositor->base.display,
 181                        EGL_NO_SURFACE, EGL_NO_SURFACE,
 182                        EGL_NO_CONTEXT);
 183
 184         eglTerminate(compositor->base.display);
 185         eglReleaseThread();
 186 }
 187
 188 static void
 189 x11_output_repaint(struct weston_output *output_base)
 190 {
 191         struct x11_output *output = (struct x11_output *)output_base;
 192         struct x11_compositor *compositor =
 193                 (struct x11_compositor *)output->base.compositor;
 194         struct weston_surface *surface;
 195
 196         if (!eglMakeCurrent(compositor->base.display, output->egl_surface,
 197                             output->egl_surface, compositor->base.context)) {
 198                 fprintf(stderr, "failed to make current\n");
 199                 return;
 200         }
 201
 202         wl_list_for_each_reverse(surface, &compositor->base.surface_list, link)
 203                 weston_surface_draw(surface, &output->base);
 204
 205         eglSwapBuffers(compositor->base.display, output->egl_surface);
 206
 207         wl_event_source_timer_update(output->finish_frame_timer, 10);
 208 }
 209
 210 static int
 211 finish_frame_handler(void *data)
 212 {
 213         struct x11_output *output = data;
 214         uint32_t msec;
 215         struct timeval tv;
 216
 217         gettimeofday(&tv, NULL);
 218         msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
 219         weston_output_finish_frame(&output->base, msec);
 220
 221         return 1;
 222 }
 223
 224 static void
 225 x11_output_destroy(struct weston_output *output_base)
 226 {
 227         struct x11_output *output = (struct x11_output *)output_base;
 228         struct x11_compositor *compositor =
 229                 (struct x11_compositor *)output->base.compositor;
 230
 231         wl_list_remove(&output->base.link);
 232         wl_event_source_remove(output->finish_frame_timer);
 233
 234         eglDestroySurface(compositor->base.display, output->egl_surface);
 235
 236         xcb_destroy_window(compositor->conn, output->window);
 237
 238         weston_output_destroy(&output->base);
 239
 240         free(output);
 241 }
 242
 243 static void
 244 x11_output_set_wm_protocols(struct x11_output *output)
 245 {
 246         xcb_atom_t list[1];
 247         struct x11_compositor *c =
 248                 (struct x11_compositor *) output->base.compositor;
 249
 250         list[0] = c->atom.wm_delete_window;
 251         xcb_change_property (c->conn,
 252                              XCB_PROP_MODE_REPLACE,
 253                              output->window,
 254                              c->atom.wm_protocols,
 255                              XCB_ATOM_ATOM,
 256                              32,
 257                              ARRAY_LENGTH(list),
 258                              list);
 259 }
 260
 261 static void
 262 x11_output_change_state(struct x11_output *output, int add, xcb_atom_t state)
 263 {
 264         xcb_client_message_event_t event;
 265         struct x11_compositor *c =
 266                 (struct x11_compositor *) output->base.compositor;
 267         xcb_screen_iterator_t iter;
 268
 269 #define _NET_WM_STATE_REMOVE        0    /* remove/unset property */
 270 #define _NET_WM_STATE_ADD           1    /* add/set property */
 271 #define _NET_WM_STATE_TOGGLE        2    /* toggle property  */
 272
 273         memset(&event, 0, sizeof event);
 274         event.response_type = XCB_CLIENT_MESSAGE;
 275         event.format = 32;
 276         event.window = output->window;
 277         event.type = c->atom.net_wm_state;
 278
 279         event.data.data32[0] = add ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
 280         event.data.data32[1] = state;
 281         event.data.data32[2] = 0;
 282         event.data.data32[3] = 0;
 283         event.data.data32[4] = 0;
 284
 285         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 286         xcb_send_event(c->conn, 0, iter.data->root,
 287                        XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
 288                        XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT,
 289                        (void *) &event);
 290 }
 291
 292
 293 struct wm_normal_hints {
 294         uint32_t flags;
 295         uint32_t pad[4];
 296         int32_t min_width, min_height;
 297         int32_t max_width, max_height;
 298         int32_t width_inc, height_inc;
 299         int32_t min_aspect_x, min_aspect_y;
 300         int32_t max_aspect_x, max_aspect_y;
 301         int32_t base_width, base_height;
 302         int32_t win_gravity;
 303 };
 304
 305 #define WM_NORMAL_HINTS_MIN_SIZE        16
 306 #define WM_NORMAL_HINTS_MAX_SIZE        32
 307
 308 static void
 309 x11_output_set_icon(struct x11_compositor *c,
 310                     struct x11_output *output, const char *filename)
 311 {
 312         uint32_t *icon, *pixels, stride;
 313         int32_t width, height;
 314
 315         pixels = weston_load_image(filename, &width, &height, &stride);
 316         if (!pixels)
 317                 return;
 318         icon = malloc(width * height * 4 + 8);
 319         if (!icon) {
 320                 free(pixels);
 321                 return;
 322         }
 323
 324         icon[0] = width;
 325         icon[1] = height;
 326         memcpy(icon + 2, pixels, width * height * 4);
 327         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 328                             c->atom.net_wm_icon, c->atom.cardinal, 32,
 329                             width * height + 2, icon);
 330         free(icon);
 331         free(pixels);
 332 }
 333
 334 static int
 335 x11_compositor_create_output(struct x11_compositor *c, int x, int y,
 336                              int width, int height, int fullscreen)
 337 {
 338         static const char name[] = "Weston Compositor";
 339         static const char class[] = "weston-1\0Weston Compositor";
 340         struct x11_output *output;
 341         xcb_screen_iterator_t iter;
 342         struct wm_normal_hints normal_hints;
 343         struct wl_event_loop *loop;
 344         uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
 345         uint32_t values[2] = {
 346                 XCB_EVENT_MASK_KEY_PRESS |
 347                 XCB_EVENT_MASK_KEY_RELEASE |
 348                 XCB_EVENT_MASK_BUTTON_PRESS |
 349                 XCB_EVENT_MASK_BUTTON_RELEASE |
 350                 XCB_EVENT_MASK_POINTER_MOTION |
 351                 XCB_EVENT_MASK_EXPOSURE |
 352                 XCB_EVENT_MASK_STRUCTURE_NOTIFY |
 353                 XCB_EVENT_MASK_ENTER_WINDOW |
 354                 XCB_EVENT_MASK_LEAVE_WINDOW |
 355                 XCB_EVENT_MASK_KEYMAP_STATE |
 356                 XCB_EVENT_MASK_FOCUS_CHANGE,
 357                 0
 358         };
 359
 360         output = malloc(sizeof *output);
 361         if (output == NULL)
 362                 return -1;
 363
 364         memset(output, 0, sizeof *output);
 365
 366         output->mode.flags =
 367                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 368         output->mode.width = width;
 369         output->mode.height = height;
 370         output->mode.refresh = 60;
 371         wl_list_init(&output->base.mode_list);
 372         wl_list_insert(&output->base.mode_list, &output->mode.link);
 373
 374         output->base.current = &output->mode;
 375         weston_output_init(&output->base, &c->base, x, y, width, height,
 376                          WL_OUTPUT_FLIPPED);
 377
 378         values[1] = c->null_cursor;
 379         output->window = xcb_generate_id(c->conn);
 380         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 381         xcb_create_window(c->conn,
 382                           XCB_COPY_FROM_PARENT,
 383                           output->window,
 384                           iter.data->root,
 385                           0, 0,
 386                           width, height,
 387                           0,
 388                           XCB_WINDOW_CLASS_INPUT_OUTPUT,
 389                           iter.data->root_visual,
 390                           mask, values);
 391
 392         /* Don't resize me. */
 393         memset(&normal_hints, 0, sizeof normal_hints);
 394         normal_hints.flags =
 395                 WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
 396         normal_hints.min_width = width;
 397         normal_hints.min_height = height;
 398         normal_hints.max_width = width;
 399         normal_hints.max_height = height;
 400         xcb_change_property (c->conn, XCB_PROP_MODE_REPLACE, output->window,
 401                              c->atom.wm_normal_hints,
 402                              c->atom.wm_size_hints, 32,
 403                              sizeof normal_hints / 4,
 404                              (uint8_t *) &normal_hints);
 405
 406         /* Set window name.  Don't bother with non-EWMH WMs. */
 407         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 408                             c->atom.net_wm_name, c->atom.utf8_string, 8,
 409                             strlen(name), name);
 410         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 411                             c->atom.wm_class, c->atom.string, 8,
 412                             sizeof class, class);
 413
 414         x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
 415
 416         xcb_map_window(c->conn, output->window);
 417
 418         x11_output_set_wm_protocols(output);
 419
 420         if (fullscreen)
 421                 x11_output_change_state(output, 1,
 422                                         c->atom.net_wm_state_fullscreen);
 423
 424         output->egl_surface =
 425                 eglCreateWindowSurface(c->base.display, c->base.config,
 426                                        output->window, NULL);
 427         if (!output->egl_surface) {
 428                 fprintf(stderr, "failed to create window surface\n");
 429                 return -1;
 430         }
 431         if (!eglMakeCurrent(c->base.display, output->egl_surface,
 432                             output->egl_surface, c->base.context)) {
 433                 fprintf(stderr, "failed to make surface current\n");
 434                 return -1;
 435         }
 436
 437         loop = wl_display_get_event_loop(c->base.wl_display);
 438         output->finish_frame_timer =
 439                 wl_event_loop_add_timer(loop, finish_frame_handler, output);
 440
 441         output->base.repaint = x11_output_repaint;
 442         output->base.destroy = x11_output_destroy;
 443         output->base.assign_planes = NULL;
 444
 445         wl_list_insert(c->base.output_list.prev, &output->base.link);
 446
 447         return 0;
 448 }
 449
 450 static struct x11_output *
 451 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 452 {
 453         struct x11_output *output;
 454
 455         wl_list_for_each(output, &c->base.output_list, base.link) {
 456                 if (output->window == window)
 457                         return output;
 458         }
 459
 460         return NULL;
 461 }
 462
 463 static void
 464 x11_compositor_deliver_button_event(struct x11_compositor *c,
 465                                     xcb_generic_event_t *event, int state)
 466 {
 467         xcb_button_press_event_t *button_event =
 468                 (xcb_button_press_event_t *) event;
 469         int button;
 470
 471         switch (button_event->detail) {
 472         default:
 473                 button = button_event->detail + BTN_LEFT - 1;
 474                 break;
 475         case 2:
 476                 button = BTN_MIDDLE;
 477                 break;
 478         case 3:
 479                 button = BTN_RIGHT;
 480                 break;
 481         case 4:
 482         case 5:
 483         case 6:
 484         case 7:
 485                 /* X11 sends wheel events as buttons events.  But
 486                  * linux input treats as REL_WHEEL, therefore not
 487                  * button type at all. When we update the input
 488                  * protocol and get the 'axis' event, we'll send
 489                  * scroll events as axis events. */
 490                 return;
 491         }
 492
 493         notify_button(c->base.input_device,
 494                       weston_compositor_get_time(), button, state);
 495 }
 496
 497 static int
 498 x11_compositor_next_event(struct x11_compositor *c,
 499                           xcb_generic_event_t **event, uint32_t mask)
 500 {
 501         if (mask & WL_EVENT_READABLE) {
 502                 *event = xcb_poll_for_event(c->conn);
 503         } else {
 504 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
 505                 *event = xcb_poll_for_queued_event(c->conn);
 506 #else
 507                 *event = xcb_poll_for_event(c->conn);
 508 #endif
 509         }
 510
 511         return *event != NULL;
 512 }
 513
 514 static int
 515 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
 516 {
 517         struct x11_compositor *c = data;
 518         struct x11_output *output;
 519         xcb_generic_event_t *event, *prev;
 520         xcb_client_message_event_t *client_message;
 521         xcb_motion_notify_event_t *motion_notify;
 522         xcb_enter_notify_event_t *enter_notify;
 523         xcb_key_press_event_t *key_press, *key_release;
 524         xcb_keymap_notify_event_t *keymap_notify;
 525         xcb_focus_in_event_t *focus_in;
 526         xcb_atom_t atom;
 527         uint32_t *k;
 528         int i, set;
 529
 530         prev = NULL;
 531         while (x11_compositor_next_event(c, &event, mask)) {
 532                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
 533                 case XCB_KEY_RELEASE:
 534                         key_release = (xcb_key_press_event_t *) prev;
 535                         key_press = (xcb_key_press_event_t *) event;
 536                         if ((event->response_type & ~0x80) == XCB_KEY_PRESS &&
 537                             key_release->time == key_press->time &&
 538                             key_release->detail == key_press->detail) {
 539                                 /* Don't deliver the held key release
 540                                  * event or the new key press event. */
 541                                 free(event);
 542                                 free(prev);
 543                                 prev = NULL;
 544                                 continue;
 545                         } else {
 546                                 /* Deliver the held key release now
 547                                  * and fall through and handle the new
 548                                  * event below. */
 549                                 notify_key(c->base.input_device,
 550                                            weston_compositor_get_time(),
 551                                            key_release->detail - 8, 0);
 552                                 free(prev);
 553                                 prev = NULL;
 554                                 break;
 555                         }
 556
 557                 case XCB_FOCUS_IN:
 558                         /* assert event is keymap_notify */
 559                         focus_in = (xcb_focus_in_event_t *) prev;
 560                         keymap_notify = (xcb_keymap_notify_event_t *) event;
 561                         c->keys.size = 0;
 562                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
 563                                 set = keymap_notify->keys[i >> 3] &
 564                                         (1 << (i & 7));
 565                                 if (set) {
 566                                         k = wl_array_add(&c->keys, sizeof *k);
 567                                         *k = i;
 568                                 }
 569                         }
 570
 571                         output = x11_compositor_find_output(c, focus_in->event);
 572                         notify_keyboard_focus(c->base.input_device,
 573                                               weston_compositor_get_time(),
 574                                               &output->base, &c->keys);
 575
 576                         free(prev);
 577                         prev = NULL;
 578                         break;
 579
 580                 default:
 581                         /* No previous event held */
 582                         break;
 583                 }
 584
 585                 switch (event->response_type & ~0x80) {
 586                 case XCB_KEY_PRESS:
 587                         key_press = (xcb_key_press_event_t *) event;
 588                         notify_key(c->base.input_device,
 589                                    weston_compositor_get_time(),
 590                                    key_press->detail - 8, 1);
 591                         break;
 592                 case XCB_KEY_RELEASE:
 593                         prev = event;
 594                         break;
 595                 case XCB_BUTTON_PRESS:
 596                         x11_compositor_deliver_button_event(c, event, 1);
 597                         break;
 598                 case XCB_BUTTON_RELEASE:
 599                         x11_compositor_deliver_button_event(c, event, 0);
 600                         break;
 601                 case XCB_MOTION_NOTIFY:
 602                         motion_notify = (xcb_motion_notify_event_t *) event;
 603                         output = x11_compositor_find_output(c, motion_notify->event);
 604                         notify_motion(c->base.input_device,
 605                                       weston_compositor_get_time(),
 606                                       output->base.x + motion_notify->event_x,
 607                                       output->base.y + motion_notify->event_y);
 608                         break;
 609
 610                 case XCB_EXPOSE:
 611                         /* FIXME: schedule output repaint */
 612                         /* output = x11_compositor_find_output(c, expose->window); */
 613
 614                         weston_compositor_schedule_repaint(&c->base);
 615                         break;
 616
 617                 case XCB_ENTER_NOTIFY:
 618                         enter_notify = (xcb_enter_notify_event_t *) event;
 619                         if (enter_notify->state >= Button1Mask)
 620                                 break;
 621                         output = x11_compositor_find_output(c, enter_notify->event);
 622                         notify_pointer_focus(c->base.input_device,
 623                                              weston_compositor_get_time(),
 624                                              &output->base,
 625                                              output->base.x + enter_notify->event_x,
 626                                              output->base.y + enter_notify->event_y);
 627                         break;
 628
 629                 case XCB_LEAVE_NOTIFY:
 630                         enter_notify = (xcb_enter_notify_event_t *) event;
 631                         if (enter_notify->state >= Button1Mask)
 632                                 break;
 633                         output = x11_compositor_find_output(c, enter_notify->event);
 634                         notify_pointer_focus(c->base.input_device,
 635                                              weston_compositor_get_time(),
 636                                              NULL,
 637                                              output->base.x + enter_notify->event_x,
 638                                              output->base.y + enter_notify->event_y);
 639                         break;
 640
 641                 case XCB_CLIENT_MESSAGE:
 642                         client_message = (xcb_client_message_event_t *) event;
 643                         atom = client_message->data.data32[0];
 644                         if (atom == c->atom.wm_delete_window)
 645                                 wl_display_terminate(c->base.wl_display);
 646                         break;
 647
 648                 case XCB_FOCUS_IN:
 649                         focus_in = (xcb_focus_in_event_t *) event;
 650                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
 651                                 break;
 652
 653                         prev = event;
 654                         break;
 655
 656                 case XCB_FOCUS_OUT:
 657                         focus_in = (xcb_focus_in_event_t *) event;
 658                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
 659                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
 660                                 break;
 661                         notify_keyboard_focus(c->base.input_device,
 662                                               weston_compositor_get_time(),
 663                                               NULL, NULL);
 664                         break;
 665
 666                 default:
 667                         break;
 668                 }
 669
 670                 if (prev != event)
 671                         free (event);
 672         }
 673
 674         switch (prev ? prev->response_type & ~0x80 : 0x80) {
 675         case XCB_KEY_RELEASE:
 676                 key_release = (xcb_key_press_event_t *) prev;
 677                 notify_key(c->base.input_device,
 678                            weston_compositor_get_time(),
 679                            key_release->detail - 8, 0);
 680                 free(prev);
 681                 prev = NULL;
 682                 break;
 683         default:
 684                 break;
 685         }
 686
 687         return event != NULL;
 688 }
 689
 690 #define F(field) offsetof(struct x11_compositor, field)
 691
 692 static void
 693 x11_compositor_get_resources(struct x11_compositor *c)
 694 {
 695         static const struct { const char *name; int offset; } atoms[] = {
 696                 { "WM_PROTOCOLS",       F(atom.wm_protocols) },
 697                 { "WM_NORMAL_HINTS",    F(atom.wm_normal_hints) },
 698                 { "WM_SIZE_HINTS",      F(atom.wm_size_hints) },
 699                 { "WM_DELETE_WINDOW",   F(atom.wm_delete_window) },
 700                 { "WM_CLASS",           F(atom.wm_class) },
 701                 { "_NET_WM_NAME",       F(atom.net_wm_name) },
 702                 { "_NET_WM_ICON",       F(atom.net_wm_icon) },
 703                 { "_NET_WM_STATE",      F(atom.net_wm_state) },
 704                 { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
 705                 { "STRING",             F(atom.string) },
 706                 { "UTF8_STRING",        F(atom.utf8_string) },
 707                 { "CARDINAL",           F(atom.cardinal) },
 708         };
 709
 710         xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
 711         xcb_intern_atom_reply_t *reply;
 712         xcb_pixmap_t pixmap;
 713         xcb_gc_t gc;
 714         int i;
 715         uint8_t data[] = { 0, 0, 0, 0 };
 716
 717         for (i = 0; i < ARRAY_LENGTH(atoms); i++)
 718                 cookies[i] = xcb_intern_atom (c->conn, 0,
 719                                               strlen(atoms[i].name),
 720                                               atoms[i].name);
 721
 722         for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
 723                 reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
 724                 *(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
 725                 free(reply);
 726         }
 727
 728         pixmap = xcb_generate_id(c->conn);
 729         gc = xcb_generate_id(c->conn);
 730         xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
 731         xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
 732         xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
 733                       pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
 734         c->null_cursor = xcb_generate_id(c->conn);
 735         xcb_create_cursor (c->conn, c->null_cursor,
 736                            pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
 737         xcb_free_gc(c->conn, gc);
 738         xcb_free_pixmap(c->conn, pixmap);
 739 }
 740
 741 static void
 742 x11_destroy(struct weston_compositor *ec)
 743 {
 744         struct x11_compositor *compositor = (struct x11_compositor *)ec;
 745
 746         wl_event_source_remove(compositor->xcb_source);
 747         x11_input_destroy(compositor);
 748
 749         weston_compositor_shutdown(ec); /* destroys outputs, too */
 750
 751         x11_compositor_fini_egl(compositor);
 752
 753         XCloseDisplay(compositor->dpy);
 754         free(ec);
 755 }
 756
 757 static struct weston_compositor *
 758 x11_compositor_create(struct wl_display *display,
 759                       int width, int height, int count, int fullscreen)
 760 {
 761         struct x11_compositor *c;
 762         struct wl_event_loop *loop;
 763         xcb_screen_iterator_t s;
 764         int i, x;
 765
 766         c = malloc(sizeof *c);
 767         if (c == NULL)
 768                 return NULL;
 769
 770         memset(c, 0, sizeof *c);
 771
 772         c->dpy = XOpenDisplay(NULL);
 773         if (c->dpy == NULL)
 774                 return NULL;
 775
 776         c->conn = XGetXCBConnection(c->dpy);
 777         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
 778
 779         if (xcb_connection_has_error(c->conn))
 780                 return NULL;
 781
 782         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 783         c->screen = s.data;
 784         wl_array_init(&c->keys);
 785
 786         x11_compositor_get_resources(c);
 787
 788         c->base.wl_display = display;
 789         if (x11_compositor_init_egl(c) < 0)
 790                 return NULL;
 791
 792         c->base.destroy = x11_destroy;
 793
 794         /* Can't init base class until we have a current egl context */
 795         if (weston_compositor_init(&c->base, display) < 0)
 796                 return NULL;
 797
 798         for (i = 0, x = 0; i < count; i++) {
 799                 if (x11_compositor_create_output(c, x, 0, width, height,
 800                                                  fullscreen) < 0)
 801                         return NULL;
 802                 x += width;
 803         }
 804
 805         if (x11_input_create(c) < 0)
 806                 return NULL;
 807
 808         loop = wl_display_get_event_loop(c->base.wl_display);
 809
 810         c->xcb_source =
 811                 wl_event_loop_add_fd(loop, xcb_get_file_descriptor(c->conn),
 812                                      WL_EVENT_READABLE,
 813                                      x11_compositor_handle_event, c);
 814         wl_event_source_check(c->xcb_source);
 815
 816         return &c->base;
 817 }
 818
 819 struct weston_compositor *
 820 backend_init(struct wl_display *display, char *options);
 821
 822 WL_EXPORT struct weston_compositor *
 823 backend_init(struct wl_display *display, char *options)
 824 {
 825         int width = 1024, height = 640, fullscreen = 0, count = 1, i;
 826         char *p, *value;
 827
 828         static char * const tokens[] = {
 829                 "width", "height", "fullscreen", "output-count", NULL
 830         };
 831
 832         p = options;
 833         while (i = getsubopt(&p, tokens, &value), i != -1) {
 834                 switch (i) {
 835                 case 0:
 836                         width = strtol(value, NULL, 0);
 837                         break;
 838                 case 1:
 839                         height = strtol(value, NULL, 0);
 840                         break;
 841                 case 2:
 842                         fullscreen = 1;
 843                         break;
 844                 case 3:
 845                         count = strtol(value, NULL, 0);
 846                         break;
 847                 }
 848         }
 849
 850         return x11_compositor_create(display,
 851                                      width, height, count, fullscreen);
 852 }