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 int
 225 x11_output_set_cursor(struct weston_output *output_base,
 226                       struct weston_input_device *input)
 227 {
 228         return -1;
 229 }
 230
 231 static void
 232 x11_output_destroy(struct weston_output *output_base)
 233 {
 234         struct x11_output *output = (struct x11_output *)output_base;
 235         struct x11_compositor *compositor =
 236                 (struct x11_compositor *)output->base.compositor;
 237
 238         wl_list_remove(&output->base.link);
 239         wl_event_source_remove(output->finish_frame_timer);
 240
 241         eglDestroySurface(compositor->base.display, output->egl_surface);
 242
 243         xcb_destroy_window(compositor->conn, output->window);
 244
 245         weston_output_destroy(&output->base);
 246
 247         free(output);
 248 }
 249
 250 static void
 251 x11_output_set_wm_protocols(struct x11_output *output)
 252 {
 253         xcb_atom_t list[1];
 254         struct x11_compositor *c =
 255                 (struct x11_compositor *) output->base.compositor;
 256
 257         list[0] = c->atom.wm_delete_window;
 258         xcb_change_property (c->conn,
 259                              XCB_PROP_MODE_REPLACE,
 260                              output->window,
 261                              c->atom.wm_protocols,
 262                              XCB_ATOM_ATOM,
 263                              32,
 264                              ARRAY_LENGTH(list),
 265                              list);
 266 }
 267
 268 static void
 269 x11_output_change_state(struct x11_output *output, int add, xcb_atom_t state)
 270 {
 271         xcb_client_message_event_t event;
 272         struct x11_compositor *c =
 273                 (struct x11_compositor *) output->base.compositor;
 274         xcb_screen_iterator_t iter;
 275
 276 #define _NET_WM_STATE_REMOVE        0    /* remove/unset property */
 277 #define _NET_WM_STATE_ADD           1    /* add/set property */
 278 #define _NET_WM_STATE_TOGGLE        2    /* toggle property  */
 279
 280         memset(&event, 0, sizeof event);
 281         event.response_type = XCB_CLIENT_MESSAGE;
 282         event.format = 32;
 283         event.window = output->window;
 284         event.type = c->atom.net_wm_state;
 285
 286         event.data.data32[0] = add ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
 287         event.data.data32[1] = state;
 288         event.data.data32[2] = 0;
 289         event.data.data32[3] = 0;
 290         event.data.data32[4] = 0;
 291
 292         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 293         xcb_send_event(c->conn, 0, iter.data->root,
 294                        XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
 295                        XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT,
 296                        (void *) &event);
 297 }
 298
 299
 300 struct wm_normal_hints {
 301         uint32_t flags;
 302         uint32_t pad[4];
 303         int32_t min_width, min_height;
 304         int32_t max_width, max_height;
 305         int32_t width_inc, height_inc;
 306         int32_t min_aspect_x, min_aspect_y;
 307         int32_t max_aspect_x, max_aspect_y;
 308         int32_t base_width, base_height;
 309         int32_t win_gravity;
 310 };
 311
 312 #define WM_NORMAL_HINTS_MIN_SIZE        16
 313 #define WM_NORMAL_HINTS_MAX_SIZE        32
 314
 315 static void
 316 x11_output_set_icon(struct x11_compositor *c,
 317                     struct x11_output *output, const char *filename)
 318 {
 319         uint32_t *icon, *pixels, stride;
 320         int32_t width, height;
 321
 322         pixels = weston_load_image(filename, &width, &height, &stride);
 323         if (!pixels)
 324                 return;
 325         icon = malloc(width * height * 4 + 8);
 326         if (!icon) {
 327                 free(pixels);
 328                 return;
 329         }
 330
 331         icon[0] = width;
 332         icon[1] = height;
 333         memcpy(icon + 2, pixels, width * height * 4);
 334         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 335                             c->atom.net_wm_icon, c->atom.cardinal, 32,
 336                             width * height + 2, icon);
 337         free(icon);
 338         free(pixels);
 339 }
 340
 341 static int
 342 x11_compositor_create_output(struct x11_compositor *c, int x, int y,
 343                              int width, int height, int fullscreen)
 344 {
 345         static const char name[] = "Weston Compositor";
 346         static const char class[] = "weston-1\0Weston Compositor";
 347         struct x11_output *output;
 348         xcb_screen_iterator_t iter;
 349         struct wm_normal_hints normal_hints;
 350         struct wl_event_loop *loop;
 351         uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
 352         uint32_t values[2] = {
 353                 XCB_EVENT_MASK_KEY_PRESS |
 354                 XCB_EVENT_MASK_KEY_RELEASE |
 355                 XCB_EVENT_MASK_BUTTON_PRESS |
 356                 XCB_EVENT_MASK_BUTTON_RELEASE |
 357                 XCB_EVENT_MASK_POINTER_MOTION |
 358                 XCB_EVENT_MASK_EXPOSURE |
 359                 XCB_EVENT_MASK_STRUCTURE_NOTIFY |
 360                 XCB_EVENT_MASK_ENTER_WINDOW |
 361                 XCB_EVENT_MASK_LEAVE_WINDOW |
 362                 XCB_EVENT_MASK_KEYMAP_STATE |
 363                 XCB_EVENT_MASK_FOCUS_CHANGE,
 364                 0
 365         };
 366
 367         output = malloc(sizeof *output);
 368         if (output == NULL)
 369                 return -1;
 370
 371         memset(output, 0, sizeof *output);
 372
 373         output->mode.flags =
 374                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 375         output->mode.width = width;
 376         output->mode.height = height;
 377         output->mode.refresh = 60;
 378         wl_list_init(&output->base.mode_list);
 379         wl_list_insert(&output->base.mode_list, &output->mode.link);
 380
 381         output->base.current = &output->mode;
 382         weston_output_init(&output->base, &c->base, x, y, width, height,
 383                          WL_OUTPUT_FLIPPED);
 384
 385         values[1] = c->null_cursor;
 386         output->window = xcb_generate_id(c->conn);
 387         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 388         xcb_create_window(c->conn,
 389                           XCB_COPY_FROM_PARENT,
 390                           output->window,
 391                           iter.data->root,
 392                           0, 0,
 393                           width, height,
 394                           0,
 395                           XCB_WINDOW_CLASS_INPUT_OUTPUT,
 396                           iter.data->root_visual,
 397                           mask, values);
 398
 399         /* Don't resize me. */
 400         memset(&normal_hints, 0, sizeof normal_hints);
 401         normal_hints.flags =
 402                 WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
 403         normal_hints.min_width = width;
 404         normal_hints.min_height = height;
 405         normal_hints.max_width = width;
 406         normal_hints.max_height = height;
 407         xcb_change_property (c->conn, XCB_PROP_MODE_REPLACE, output->window,
 408                              c->atom.wm_normal_hints,
 409                              c->atom.wm_size_hints, 32,
 410                              sizeof normal_hints / 4,
 411                              (uint8_t *) &normal_hints);
 412
 413         /* Set window name.  Don't bother with non-EWMH WMs. */
 414         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 415                             c->atom.net_wm_name, c->atom.utf8_string, 8,
 416                             strlen(name), name);
 417         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 418                             c->atom.wm_class, c->atom.string, 8,
 419                             sizeof class, class);
 420
 421         x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
 422
 423         xcb_map_window(c->conn, output->window);
 424
 425         x11_output_set_wm_protocols(output);
 426
 427         if (fullscreen)
 428                 x11_output_change_state(output, 1,
 429                                         c->atom.net_wm_state_fullscreen);
 430
 431         output->egl_surface =
 432                 eglCreateWindowSurface(c->base.display, c->base.config,
 433                                        output->window, NULL);
 434         if (!output->egl_surface) {
 435                 fprintf(stderr, "failed to create window surface\n");
 436                 return -1;
 437         }
 438         if (!eglMakeCurrent(c->base.display, output->egl_surface,
 439                             output->egl_surface, c->base.context)) {
 440                 fprintf(stderr, "failed to make surface current\n");
 441                 return -1;
 442         }
 443
 444         loop = wl_display_get_event_loop(c->base.wl_display);
 445         output->finish_frame_timer =
 446                 wl_event_loop_add_timer(loop, finish_frame_handler, output);
 447
 448         output->base.repaint = x11_output_repaint;
 449         output->base.set_hardware_cursor = x11_output_set_cursor;
 450         output->base.destroy = x11_output_destroy;
 451         output->base.assign_planes = NULL;
 452
 453         wl_list_insert(c->base.output_list.prev, &output->base.link);
 454
 455         return 0;
 456 }
 457
 458 static struct x11_output *
 459 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 460 {
 461         struct x11_output *output;
 462
 463         wl_list_for_each(output, &c->base.output_list, base.link) {
 464                 if (output->window == window)
 465                         return output;
 466         }
 467
 468         return NULL;
 469 }
 470
 471 static void
 472 x11_compositor_deliver_button_event(struct x11_compositor *c,
 473                                     xcb_generic_event_t *event, int state)
 474 {
 475         xcb_button_press_event_t *button_event =
 476                 (xcb_button_press_event_t *) event;
 477         int button;
 478
 479         switch (button_event->detail) {
 480         default:
 481                 button = button_event->detail + BTN_LEFT - 1;
 482                 break;
 483         case 2:
 484                 button = BTN_MIDDLE;
 485                 break;
 486         case 3:
 487                 button = BTN_RIGHT;
 488                 break;
 489         case 4:
 490         case 5:
 491         case 6:
 492         case 7:
 493                 /* X11 sends wheel events as buttons events.  But
 494                  * linux input treats as REL_WHEEL, therefore not
 495                  * button type at all. When we update the input
 496                  * protocol and get the 'axis' event, we'll send
 497                  * scroll events as axis events. */
 498                 return;
 499         }
 500
 501         notify_button(c->base.input_device,
 502                       weston_compositor_get_time(), button, state);
 503 }
 504
 505 static int
 506 x11_compositor_next_event(struct x11_compositor *c,
 507                           xcb_generic_event_t **event, uint32_t mask)
 508 {
 509         if (mask & WL_EVENT_READABLE) {
 510                 *event = xcb_poll_for_event(c->conn);
 511         } else {
 512 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
 513                 *event = xcb_poll_for_queued_event(c->conn);
 514 #else
 515                 *event = xcb_poll_for_event(c->conn);
 516 #endif
 517         }
 518
 519         return *event != NULL;
 520 }
 521
 522 static int
 523 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
 524 {
 525         struct x11_compositor *c = data;
 526         struct x11_output *output;
 527         xcb_generic_event_t *event, *prev;
 528         xcb_client_message_event_t *client_message;
 529         xcb_motion_notify_event_t *motion_notify;
 530         xcb_enter_notify_event_t *enter_notify;
 531         xcb_key_press_event_t *key_press, *key_release;
 532         xcb_keymap_notify_event_t *keymap_notify;
 533         xcb_focus_in_event_t *focus_in;
 534         xcb_atom_t atom;
 535         uint32_t *k;
 536         int i, set;
 537
 538         prev = NULL;
 539         while (x11_compositor_next_event(c, &event, mask)) {
 540                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
 541                 case XCB_KEY_RELEASE:
 542                         key_release = (xcb_key_press_event_t *) prev;
 543                         key_press = (xcb_key_press_event_t *) event;
 544                         if ((event->response_type & ~0x80) == XCB_KEY_PRESS &&
 545                             key_release->time == key_press->time &&
 546                             key_release->detail == key_press->detail) {
 547                                 /* Don't deliver the held key release
 548                                  * event or the new key press event. */
 549                                 free(event);
 550                                 free(prev);
 551                                 prev = NULL;
 552                                 continue;
 553                         } else {
 554                                 /* Deliver the held key release now
 555                                  * and fall through and handle the new
 556                                  * event below. */
 557                                 notify_key(c->base.input_device,
 558                                            weston_compositor_get_time(),
 559                                            key_release->detail - 8, 0);
 560                                 free(prev);
 561                                 prev = NULL;
 562                                 break;
 563                         }
 564
 565                 case XCB_FOCUS_IN:
 566                         /* assert event is keymap_notify */
 567                         focus_in = (xcb_focus_in_event_t *) prev;
 568                         keymap_notify = (xcb_keymap_notify_event_t *) event;
 569                         c->keys.size = 0;
 570                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
 571                                 set = keymap_notify->keys[i >> 3] &
 572                                         (1 << (i & 7));
 573                                 if (set) {
 574                                         k = wl_array_add(&c->keys, sizeof *k);
 575                                         *k = i;
 576                                 }
 577                         }
 578
 579                         output = x11_compositor_find_output(c, focus_in->event);
 580                         notify_keyboard_focus(c->base.input_device,
 581                                               weston_compositor_get_time(),
 582                                               &output->base, &c->keys);
 583
 584                         free(prev);
 585                         prev = NULL;
 586                         break;
 587
 588                 default:
 589                         /* No previous event held */
 590                         break;
 591                 }
 592
 593                 switch (event->response_type & ~0x80) {
 594                 case XCB_KEY_PRESS:
 595                         key_press = (xcb_key_press_event_t *) event;
 596                         notify_key(c->base.input_device,
 597                                    weston_compositor_get_time(),
 598                                    key_press->detail - 8, 1);
 599                         break;
 600                 case XCB_KEY_RELEASE:
 601                         prev = event;
 602                         break;
 603                 case XCB_BUTTON_PRESS:
 604                         x11_compositor_deliver_button_event(c, event, 1);
 605                         break;
 606                 case XCB_BUTTON_RELEASE:
 607                         x11_compositor_deliver_button_event(c, event, 0);
 608                         break;
 609                 case XCB_MOTION_NOTIFY:
 610                         motion_notify = (xcb_motion_notify_event_t *) event;
 611                         output = x11_compositor_find_output(c, motion_notify->event);
 612                         notify_motion(c->base.input_device,
 613                                       weston_compositor_get_time(),
 614                                       output->base.x + motion_notify->event_x,
 615                                       output->base.y + motion_notify->event_y);
 616                         break;
 617
 618                 case XCB_EXPOSE:
 619                         /* FIXME: schedule output repaint */
 620                         /* output = x11_compositor_find_output(c, expose->window); */
 621
 622                         weston_compositor_schedule_repaint(&c->base);
 623                         break;
 624
 625                 case XCB_ENTER_NOTIFY:
 626                         enter_notify = (xcb_enter_notify_event_t *) event;
 627                         if (enter_notify->state >= Button1Mask)
 628                                 break;
 629                         output = x11_compositor_find_output(c, enter_notify->event);
 630                         notify_pointer_focus(c->base.input_device,
 631                                              weston_compositor_get_time(),
 632                                              &output->base,
 633                                              output->base.x + enter_notify->event_x,
 634                                              output->base.y + enter_notify->event_y);
 635                         break;
 636
 637                 case XCB_LEAVE_NOTIFY:
 638                         enter_notify = (xcb_enter_notify_event_t *) event;
 639                         if (enter_notify->state >= Button1Mask)
 640                                 break;
 641                         output = x11_compositor_find_output(c, enter_notify->event);
 642                         notify_pointer_focus(c->base.input_device,
 643                                              weston_compositor_get_time(),
 644                                              NULL,
 645                                              output->base.x + enter_notify->event_x,
 646                                              output->base.y + enter_notify->event_y);
 647                         break;
 648
 649                 case XCB_CLIENT_MESSAGE:
 650                         client_message = (xcb_client_message_event_t *) event;
 651                         atom = client_message->data.data32[0];
 652                         if (atom == c->atom.wm_delete_window)
 653                                 wl_display_terminate(c->base.wl_display);
 654                         break;
 655
 656                 case XCB_FOCUS_IN:
 657                         focus_in = (xcb_focus_in_event_t *) event;
 658                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
 659                                 break;
 660
 661                         prev = event;
 662                         break;
 663
 664                 case XCB_FOCUS_OUT:
 665                         focus_in = (xcb_focus_in_event_t *) event;
 666                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
 667                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
 668                                 break;
 669                         notify_keyboard_focus(c->base.input_device,
 670                                               weston_compositor_get_time(),
 671                                               NULL, NULL);
 672                         break;
 673
 674                 default:
 675                         break;
 676                 }
 677
 678                 if (prev != event)
 679                         free (event);
 680         }
 681
 682         switch (prev ? prev->response_type & ~0x80 : 0x80) {
 683         case XCB_KEY_RELEASE:
 684                 key_release = (xcb_key_press_event_t *) prev;
 685                 notify_key(c->base.input_device,
 686                            weston_compositor_get_time(),
 687                            key_release->detail - 8, 0);
 688                 free(prev);
 689                 prev = NULL;
 690                 break;
 691         default:
 692                 break;
 693         }
 694
 695         return event != NULL;
 696 }
 697
 698 #define F(field) offsetof(struct x11_compositor, field)
 699
 700 static void
 701 x11_compositor_get_resources(struct x11_compositor *c)
 702 {
 703         static const struct { const char *name; int offset; } atoms[] = {
 704                 { "WM_PROTOCOLS",       F(atom.wm_protocols) },
 705                 { "WM_NORMAL_HINTS",    F(atom.wm_normal_hints) },
 706                 { "WM_SIZE_HINTS",      F(atom.wm_size_hints) },
 707                 { "WM_DELETE_WINDOW",   F(atom.wm_delete_window) },
 708                 { "WM_CLASS",           F(atom.wm_class) },
 709                 { "_NET_WM_NAME",       F(atom.net_wm_name) },
 710                 { "_NET_WM_ICON",       F(atom.net_wm_icon) },
 711                 { "_NET_WM_STATE",      F(atom.net_wm_state) },
 712                 { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
 713                 { "STRING",             F(atom.string) },
 714                 { "UTF8_STRING",        F(atom.utf8_string) },
 715                 { "CARDINAL",           F(atom.cardinal) },
 716         };
 717
 718         xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
 719         xcb_intern_atom_reply_t *reply;
 720         xcb_pixmap_t pixmap;
 721         xcb_gc_t gc;
 722         int i;
 723         uint8_t data[] = { 0, 0, 0, 0 };
 724
 725         for (i = 0; i < ARRAY_LENGTH(atoms); i++)
 726                 cookies[i] = xcb_intern_atom (c->conn, 0,
 727                                               strlen(atoms[i].name),
 728                                               atoms[i].name);
 729
 730         for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
 731                 reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
 732                 *(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
 733                 free(reply);
 734         }
 735
 736         pixmap = xcb_generate_id(c->conn);
 737         gc = xcb_generate_id(c->conn);
 738         xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
 739         xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
 740         xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
 741                       pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
 742         c->null_cursor = xcb_generate_id(c->conn);
 743         xcb_create_cursor (c->conn, c->null_cursor,
 744                            pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
 745         xcb_free_gc(c->conn, gc);
 746         xcb_free_pixmap(c->conn, pixmap);
 747 }
 748
 749 static void
 750 x11_destroy(struct weston_compositor *ec)
 751 {
 752         struct x11_compositor *compositor = (struct x11_compositor *)ec;
 753
 754         wl_event_source_remove(compositor->xcb_source);
 755         x11_input_destroy(compositor);
 756
 757         weston_compositor_shutdown(ec); /* destroys outputs, too */
 758
 759         x11_compositor_fini_egl(compositor);
 760
 761         XCloseDisplay(compositor->dpy);
 762         free(ec);
 763 }
 764
 765 static struct weston_compositor *
 766 x11_compositor_create(struct wl_display *display,
 767                       int width, int height, int count, int fullscreen)
 768 {
 769         struct x11_compositor *c;
 770         struct wl_event_loop *loop;
 771         xcb_screen_iterator_t s;
 772         int i, x;
 773
 774         c = malloc(sizeof *c);
 775         if (c == NULL)
 776                 return NULL;
 777
 778         memset(c, 0, sizeof *c);
 779
 780         c->dpy = XOpenDisplay(NULL);
 781         if (c->dpy == NULL)
 782                 return NULL;
 783
 784         c->conn = XGetXCBConnection(c->dpy);
 785         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
 786
 787         if (xcb_connection_has_error(c->conn))
 788                 return NULL;
 789
 790         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 791         c->screen = s.data;
 792         wl_array_init(&c->keys);
 793
 794         x11_compositor_get_resources(c);
 795
 796         c->base.wl_display = display;
 797         if (x11_compositor_init_egl(c) < 0)
 798                 return NULL;
 799
 800         c->base.destroy = x11_destroy;
 801
 802         /* Can't init base class until we have a current egl context */
 803         if (weston_compositor_init(&c->base, display) < 0)
 804                 return NULL;
 805
 806         for (i = 0, x = 0; i < count; i++) {
 807                 if (x11_compositor_create_output(c, x, 0, width, height,
 808                                                  fullscreen) < 0)
 809                         return NULL;
 810                 x += width;
 811         }
 812
 813         if (x11_input_create(c) < 0)
 814                 return NULL;
 815
 816         loop = wl_display_get_event_loop(c->base.wl_display);
 817
 818         c->xcb_source =
 819                 wl_event_loop_add_fd(loop, xcb_get_file_descriptor(c->conn),
 820                                      WL_EVENT_READABLE,
 821                                      x11_compositor_handle_event, c);
 822         wl_event_source_check(c->xcb_source);
 823
 824         return &c->base;
 825 }
 826
 827 struct weston_compositor *
 828 backend_init(struct wl_display *display, char *options);
 829
 830 WL_EXPORT struct weston_compositor *
 831 backend_init(struct wl_display *display, char *options)
 832 {
 833         int width = 1024, height = 640, fullscreen = 0, count = 1, i;
 834         char *p, *value;
 835
 836         static char * const tokens[] = {
 837                 "width", "height", "fullscreen", "output-count", NULL
 838         };
 839
 840         p = options;
 841         while (i = getsubopt(&p, tokens, &value), i != -1) {
 842                 switch (i) {
 843                 case 0:
 844                         width = strtol(value, NULL, 0);
 845                         break;
 846                 case 1:
 847                         height = strtol(value, NULL, 0);
 848                         break;
 849                 case 2:
 850                         fullscreen = 1;
 851                         break;
 852                 case 3:
 853                         count = strtol(value, NULL, 0);
 854                         break;
 855                 }
 856         }
 857
 858         return x11_compositor_create(display,
 859                                      width, height, count, fullscreen);
 860 }