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_prepare_scanout_surface(struct weston_output *output_base,
 226                                    struct weston_surface *es)
 227 {
 228         return -1;
 229 }
 230
 231 static int
 232 x11_output_set_cursor(struct weston_output *output_base,
 233                       struct weston_input_device *input)
 234 {
 235         return -1;
 236 }
 237
 238 static void
 239 x11_output_destroy(struct weston_output *output_base)
 240 {
 241         struct x11_output *output = (struct x11_output *)output_base;
 242         struct x11_compositor *compositor =
 243                 (struct x11_compositor *)output->base.compositor;
 244
 245         wl_list_remove(&output->base.link);
 246         wl_event_source_remove(output->finish_frame_timer);
 247
 248         eglDestroySurface(compositor->base.display, output->egl_surface);
 249
 250         xcb_destroy_window(compositor->conn, output->window);
 251
 252         weston_output_destroy(&output->base);
 253
 254         free(output);
 255 }
 256
 257 static void
 258 x11_output_set_wm_protocols(struct x11_output *output)
 259 {
 260         xcb_atom_t list[1];
 261         struct x11_compositor *c =
 262                 (struct x11_compositor *) output->base.compositor;
 263
 264         list[0] = c->atom.wm_delete_window;
 265         xcb_change_property (c->conn,
 266                              XCB_PROP_MODE_REPLACE,
 267                              output->window,
 268                              c->atom.wm_protocols,
 269                              XCB_ATOM_ATOM,
 270                              32,
 271                              ARRAY_LENGTH(list),
 272                              list);
 273 }
 274
 275 static void
 276 x11_output_change_state(struct x11_output *output, int add, xcb_atom_t state)
 277 {
 278         xcb_client_message_event_t event;
 279         struct x11_compositor *c =
 280                 (struct x11_compositor *) output->base.compositor;
 281         xcb_screen_iterator_t iter;
 282
 283 #define _NET_WM_STATE_REMOVE        0    /* remove/unset property */
 284 #define _NET_WM_STATE_ADD           1    /* add/set property */
 285 #define _NET_WM_STATE_TOGGLE        2    /* toggle property  */
 286
 287         memset(&event, 0, sizeof event);
 288         event.response_type = XCB_CLIENT_MESSAGE;
 289         event.format = 32;
 290         event.window = output->window;
 291         event.type = c->atom.net_wm_state;
 292
 293         event.data.data32[0] = add ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
 294         event.data.data32[1] = state;
 295         event.data.data32[2] = 0;
 296         event.data.data32[3] = 0;
 297         event.data.data32[4] = 0;
 298
 299         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 300         xcb_send_event(c->conn, 0, iter.data->root,
 301                        XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
 302                        XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT,
 303                        (void *) &event);
 304 }
 305
 306
 307 struct wm_normal_hints {
 308         uint32_t flags;
 309         uint32_t pad[4];
 310         int32_t min_width, min_height;
 311         int32_t max_width, max_height;
 312         int32_t width_inc, height_inc;
 313         int32_t min_aspect_x, min_aspect_y;
 314         int32_t max_aspect_x, max_aspect_y;
 315         int32_t base_width, base_height;
 316         int32_t win_gravity;
 317 };
 318
 319 #define WM_NORMAL_HINTS_MIN_SIZE        16
 320 #define WM_NORMAL_HINTS_MAX_SIZE        32
 321
 322 static void
 323 x11_output_set_icon(struct x11_compositor *c,
 324                     struct x11_output *output, const char *filename)
 325 {
 326         uint32_t *icon, *pixels, stride;
 327         int32_t width, height;
 328
 329         pixels = weston_load_image(filename, &width, &height, &stride);
 330         if (!pixels)
 331                 return;
 332         icon = malloc(width * height * 4 + 8);
 333         if (!icon) {
 334                 free(pixels);
 335                 return;
 336         }
 337
 338         icon[0] = width;
 339         icon[1] = height;
 340         memcpy(icon + 2, pixels, width * height * 4);
 341         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 342                             c->atom.net_wm_icon, c->atom.cardinal, 32,
 343                             width * height + 2, icon);
 344         free(icon);
 345         free(pixels);
 346 }
 347
 348 static int
 349 x11_compositor_create_output(struct x11_compositor *c, int x, int y,
 350                              int width, int height, int fullscreen)
 351 {
 352         static const char name[] = "Weston Compositor";
 353         static const char class[] = "weston-1\0Weston Compositor";
 354         struct x11_output *output;
 355         xcb_screen_iterator_t iter;
 356         struct wm_normal_hints normal_hints;
 357         struct wl_event_loop *loop;
 358         uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
 359         uint32_t values[2] = {
 360                 XCB_EVENT_MASK_KEY_PRESS |
 361                 XCB_EVENT_MASK_KEY_RELEASE |
 362                 XCB_EVENT_MASK_BUTTON_PRESS |
 363                 XCB_EVENT_MASK_BUTTON_RELEASE |
 364                 XCB_EVENT_MASK_POINTER_MOTION |
 365                 XCB_EVENT_MASK_EXPOSURE |
 366                 XCB_EVENT_MASK_STRUCTURE_NOTIFY |
 367                 XCB_EVENT_MASK_ENTER_WINDOW |
 368                 XCB_EVENT_MASK_LEAVE_WINDOW |
 369                 XCB_EVENT_MASK_KEYMAP_STATE |
 370                 XCB_EVENT_MASK_FOCUS_CHANGE,
 371                 0
 372         };
 373
 374         output = malloc(sizeof *output);
 375         if (output == NULL)
 376                 return -1;
 377
 378         memset(output, 0, sizeof *output);
 379
 380         output->mode.flags =
 381                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 382         output->mode.width = width;
 383         output->mode.height = height;
 384         output->mode.refresh = 60;
 385         wl_list_init(&output->base.mode_list);
 386         wl_list_insert(&output->base.mode_list, &output->mode.link);
 387
 388         output->base.current = &output->mode;
 389         weston_output_init(&output->base, &c->base, x, y, width, height,
 390                          WL_OUTPUT_FLIPPED);
 391
 392         values[1] = c->null_cursor;
 393         output->window = xcb_generate_id(c->conn);
 394         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 395         xcb_create_window(c->conn,
 396                           XCB_COPY_FROM_PARENT,
 397                           output->window,
 398                           iter.data->root,
 399                           0, 0,
 400                           width, height,
 401                           0,
 402                           XCB_WINDOW_CLASS_INPUT_OUTPUT,
 403                           iter.data->root_visual,
 404                           mask, values);
 405
 406         /* Don't resize me. */
 407         memset(&normal_hints, 0, sizeof normal_hints);
 408         normal_hints.flags =
 409                 WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
 410         normal_hints.min_width = width;
 411         normal_hints.min_height = height;
 412         normal_hints.max_width = width;
 413         normal_hints.max_height = height;
 414         xcb_change_property (c->conn, XCB_PROP_MODE_REPLACE, output->window,
 415                              c->atom.wm_normal_hints,
 416                              c->atom.wm_size_hints, 32,
 417                              sizeof normal_hints / 4,
 418                              (uint8_t *) &normal_hints);
 419
 420         /* Set window name.  Don't bother with non-EWMH WMs. */
 421         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 422                             c->atom.net_wm_name, c->atom.utf8_string, 8,
 423                             strlen(name), name);
 424         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 425                             c->atom.wm_class, c->atom.string, 8,
 426                             sizeof class, class);
 427
 428         x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
 429
 430         xcb_map_window(c->conn, output->window);
 431
 432         x11_output_set_wm_protocols(output);
 433
 434         if (fullscreen)
 435                 x11_output_change_state(output, 1,
 436                                         c->atom.net_wm_state_fullscreen);
 437
 438         output->egl_surface =
 439                 eglCreateWindowSurface(c->base.display, c->base.config,
 440                                        output->window, NULL);
 441         if (!output->egl_surface) {
 442                 fprintf(stderr, "failed to create window surface\n");
 443                 return -1;
 444         }
 445         if (!eglMakeCurrent(c->base.display, output->egl_surface,
 446                             output->egl_surface, c->base.context)) {
 447                 fprintf(stderr, "failed to make surface current\n");
 448                 return -1;
 449         }
 450
 451         loop = wl_display_get_event_loop(c->base.wl_display);
 452         output->finish_frame_timer =
 453                 wl_event_loop_add_timer(loop, finish_frame_handler, output);
 454
 455         output->base.repaint = x11_output_repaint;
 456         output->base.prepare_scanout_surface =
 457                 x11_output_prepare_scanout_surface;
 458         output->base.set_hardware_cursor = x11_output_set_cursor;
 459         output->base.destroy = x11_output_destroy;
 460
 461         wl_list_insert(c->base.output_list.prev, &output->base.link);
 462
 463         return 0;
 464 }
 465
 466 static struct x11_output *
 467 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 468 {
 469         struct x11_output *output;
 470
 471         wl_list_for_each(output, &c->base.output_list, base.link) {
 472                 if (output->window == window)
 473                         return output;
 474         }
 475
 476         return NULL;
 477 }
 478
 479 static void
 480 x11_compositor_deliver_button_event(struct x11_compositor *c,
 481                                     xcb_generic_event_t *event, int state)
 482 {
 483         xcb_button_press_event_t *button_event =
 484                 (xcb_button_press_event_t *) event;
 485         int button;
 486
 487         switch (button_event->detail) {
 488         default:
 489                 button = button_event->detail + BTN_LEFT - 1;
 490                 break;
 491         case 2:
 492                 button = BTN_MIDDLE;
 493                 break;
 494         case 3:
 495                 button = BTN_RIGHT;
 496                 break;
 497         case 4:
 498         case 5:
 499         case 6:
 500         case 7:
 501                 /* X11 sends wheel events as buttons events.  But
 502                  * linux input treats as REL_WHEEL, therefore not
 503                  * button type at all. When we update the input
 504                  * protocol and get the 'axis' event, we'll send
 505                  * scroll events as axis events. */
 506                 return;
 507         }
 508
 509         notify_button(c->base.input_device,
 510                       weston_compositor_get_time(), button, state);
 511 }
 512
 513 static int
 514 x11_compositor_next_event(struct x11_compositor *c,
 515                           xcb_generic_event_t **event, uint32_t mask)
 516 {
 517         if (mask & WL_EVENT_READABLE) {
 518                 *event = xcb_poll_for_event(c->conn);
 519         } else {
 520 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
 521                 *event = xcb_poll_for_queued_event(c->conn);
 522 #else
 523                 *event = xcb_poll_for_event(c->conn);
 524 #endif
 525         }
 526
 527         return *event != NULL;
 528 }
 529
 530 static int
 531 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
 532 {
 533         struct x11_compositor *c = data;
 534         struct x11_output *output;
 535         xcb_generic_event_t *event, *prev;
 536         xcb_client_message_event_t *client_message;
 537         xcb_motion_notify_event_t *motion_notify;
 538         xcb_enter_notify_event_t *enter_notify;
 539         xcb_key_press_event_t *key_press, *key_release;
 540         xcb_keymap_notify_event_t *keymap_notify;
 541         xcb_focus_in_event_t *focus_in;
 542         xcb_atom_t atom;
 543         uint32_t *k;
 544         int i, set;
 545
 546         prev = NULL;
 547         while (x11_compositor_next_event(c, &event, mask)) {
 548                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
 549                 case XCB_KEY_RELEASE:
 550                         key_release = (xcb_key_press_event_t *) prev;
 551                         key_press = (xcb_key_press_event_t *) event;
 552                         if ((event->response_type & ~0x80) == XCB_KEY_PRESS &&
 553                             key_release->time == key_press->time &&
 554                             key_release->detail == key_press->detail) {
 555                                 /* Don't deliver the held key release
 556                                  * event or the new key press event. */
 557                                 free(event);
 558                                 free(prev);
 559                                 prev = NULL;
 560                                 continue;
 561                         } else {
 562                                 /* Deliver the held key release now
 563                                  * and fall through and handle the new
 564                                  * event below. */
 565                                 notify_key(c->base.input_device,
 566                                            weston_compositor_get_time(),
 567                                            key_release->detail - 8, 0);
 568                                 free(prev);
 569                                 prev = NULL;
 570                                 break;
 571                         }
 572
 573                 case XCB_FOCUS_IN:
 574                         /* assert event is keymap_notify */
 575                         focus_in = (xcb_focus_in_event_t *) prev;
 576                         keymap_notify = (xcb_keymap_notify_event_t *) event;
 577                         c->keys.size = 0;
 578                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
 579                                 set = keymap_notify->keys[i >> 3] &
 580                                         (1 << (i & 7));
 581                                 if (set) {
 582                                         k = wl_array_add(&c->keys, sizeof *k);
 583                                         *k = i;
 584                                 }
 585                         }
 586
 587                         output = x11_compositor_find_output(c, focus_in->event);
 588                         notify_keyboard_focus(c->base.input_device,
 589                                               weston_compositor_get_time(),
 590                                               &output->base, &c->keys);
 591
 592                         free(prev);
 593                         prev = NULL;
 594                         break;
 595
 596                 default:
 597                         /* No previous event held */
 598                         break;
 599                 }
 600
 601                 switch (event->response_type & ~0x80) {
 602                 case XCB_KEY_PRESS:
 603                         key_press = (xcb_key_press_event_t *) event;
 604                         notify_key(c->base.input_device,
 605                                    weston_compositor_get_time(),
 606                                    key_press->detail - 8, 1);
 607                         break;
 608                 case XCB_KEY_RELEASE:
 609                         prev = event;
 610                         break;
 611                 case XCB_BUTTON_PRESS:
 612                         x11_compositor_deliver_button_event(c, event, 1);
 613                         break;
 614                 case XCB_BUTTON_RELEASE:
 615                         x11_compositor_deliver_button_event(c, event, 0);
 616                         break;
 617                 case XCB_MOTION_NOTIFY:
 618                         motion_notify = (xcb_motion_notify_event_t *) event;
 619                         output = x11_compositor_find_output(c, motion_notify->event);
 620                         notify_motion(c->base.input_device,
 621                                       weston_compositor_get_time(),
 622                                       output->base.x + motion_notify->event_x,
 623                                       output->base.y + motion_notify->event_y);
 624                         break;
 625
 626                 case XCB_EXPOSE:
 627                         /* FIXME: schedule output repaint */
 628                         /* output = x11_compositor_find_output(c, expose->window); */
 629
 630                         weston_compositor_schedule_repaint(&c->base);
 631                         break;
 632
 633                 case XCB_ENTER_NOTIFY:
 634                         enter_notify = (xcb_enter_notify_event_t *) event;
 635                         if (enter_notify->state >= Button1Mask)
 636                                 break;
 637                         output = x11_compositor_find_output(c, enter_notify->event);
 638                         notify_pointer_focus(c->base.input_device,
 639                                              weston_compositor_get_time(),
 640                                              &output->base,
 641                                              output->base.x + enter_notify->event_x,
 642                                              output->base.y + enter_notify->event_y);
 643                         break;
 644
 645                 case XCB_LEAVE_NOTIFY:
 646                         enter_notify = (xcb_enter_notify_event_t *) event;
 647                         if (enter_notify->state >= Button1Mask)
 648                                 break;
 649                         output = x11_compositor_find_output(c, enter_notify->event);
 650                         notify_pointer_focus(c->base.input_device,
 651                                              weston_compositor_get_time(),
 652                                              NULL,
 653                                              output->base.x + enter_notify->event_x,
 654                                              output->base.y + enter_notify->event_y);
 655                         break;
 656
 657                 case XCB_CLIENT_MESSAGE:
 658                         client_message = (xcb_client_message_event_t *) event;
 659                         atom = client_message->data.data32[0];
 660                         if (atom == c->atom.wm_delete_window)
 661                                 wl_display_terminate(c->base.wl_display);
 662                         break;
 663
 664                 case XCB_FOCUS_IN:
 665                         focus_in = (xcb_focus_in_event_t *) event;
 666                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
 667                                 break;
 668
 669                         prev = event;
 670                         break;
 671
 672                 case XCB_FOCUS_OUT:
 673                         focus_in = (xcb_focus_in_event_t *) event;
 674                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
 675                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
 676                                 break;
 677                         notify_keyboard_focus(c->base.input_device,
 678                                               weston_compositor_get_time(),
 679                                               NULL, NULL);
 680                         break;
 681
 682                 default:
 683                         break;
 684                 }
 685
 686                 if (prev != event)
 687                         free (event);
 688         }
 689
 690         switch (prev ? prev->response_type & ~0x80 : 0x80) {
 691         case XCB_KEY_RELEASE:
 692                 key_release = (xcb_key_press_event_t *) prev;
 693                 notify_key(c->base.input_device,
 694                            weston_compositor_get_time(),
 695                            key_release->detail - 8, 0);
 696                 free(prev);
 697                 prev = NULL;
 698                 break;
 699         default:
 700                 break;
 701         }
 702
 703         return event != NULL;
 704 }
 705
 706 #define F(field) offsetof(struct x11_compositor, field)
 707
 708 static void
 709 x11_compositor_get_resources(struct x11_compositor *c)
 710 {
 711         static const struct { const char *name; int offset; } atoms[] = {
 712                 { "WM_PROTOCOLS",       F(atom.wm_protocols) },
 713                 { "WM_NORMAL_HINTS",    F(atom.wm_normal_hints) },
 714                 { "WM_SIZE_HINTS",      F(atom.wm_size_hints) },
 715                 { "WM_DELETE_WINDOW",   F(atom.wm_delete_window) },
 716                 { "WM_CLASS",           F(atom.wm_class) },
 717                 { "_NET_WM_NAME",       F(atom.net_wm_name) },
 718                 { "_NET_WM_ICON",       F(atom.net_wm_icon) },
 719                 { "_NET_WM_STATE",      F(atom.net_wm_state) },
 720                 { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
 721                 { "STRING",             F(atom.string) },
 722                 { "UTF8_STRING",        F(atom.utf8_string) },
 723                 { "CARDINAL",           F(atom.cardinal) },
 724         };
 725
 726         xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
 727         xcb_intern_atom_reply_t *reply;
 728         xcb_pixmap_t pixmap;
 729         xcb_gc_t gc;
 730         int i;
 731         uint8_t data[] = { 0, 0, 0, 0 };
 732
 733         for (i = 0; i < ARRAY_LENGTH(atoms); i++)
 734                 cookies[i] = xcb_intern_atom (c->conn, 0,
 735                                               strlen(atoms[i].name),
 736                                               atoms[i].name);
 737
 738         for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
 739                 reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
 740                 *(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
 741                 free(reply);
 742         }
 743
 744         pixmap = xcb_generate_id(c->conn);
 745         gc = xcb_generate_id(c->conn);
 746         xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
 747         xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
 748         xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
 749                       pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
 750         c->null_cursor = xcb_generate_id(c->conn);
 751         xcb_create_cursor (c->conn, c->null_cursor,
 752                            pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
 753         xcb_free_gc(c->conn, gc);
 754         xcb_free_pixmap(c->conn, pixmap);
 755 }
 756
 757 static void
 758 x11_destroy(struct weston_compositor *ec)
 759 {
 760         struct x11_compositor *compositor = (struct x11_compositor *)ec;
 761
 762         wl_event_source_remove(compositor->xcb_source);
 763         x11_input_destroy(compositor);
 764
 765         weston_compositor_shutdown(ec); /* destroys outputs, too */
 766
 767         x11_compositor_fini_egl(compositor);
 768
 769         XCloseDisplay(compositor->dpy);
 770         free(ec);
 771 }
 772
 773 static struct weston_compositor *
 774 x11_compositor_create(struct wl_display *display,
 775                       int width, int height, int count, int fullscreen)
 776 {
 777         struct x11_compositor *c;
 778         struct wl_event_loop *loop;
 779         xcb_screen_iterator_t s;
 780         int i, x;
 781
 782         c = malloc(sizeof *c);
 783         if (c == NULL)
 784                 return NULL;
 785
 786         memset(c, 0, sizeof *c);
 787
 788         c->dpy = XOpenDisplay(NULL);
 789         if (c->dpy == NULL)
 790                 return NULL;
 791
 792         c->conn = XGetXCBConnection(c->dpy);
 793         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
 794
 795         if (xcb_connection_has_error(c->conn))
 796                 return NULL;
 797
 798         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 799         c->screen = s.data;
 800         wl_array_init(&c->keys);
 801
 802         x11_compositor_get_resources(c);
 803
 804         c->base.wl_display = display;
 805         if (x11_compositor_init_egl(c) < 0)
 806                 return NULL;
 807
 808         c->base.destroy = x11_destroy;
 809
 810         /* Can't init base class until we have a current egl context */
 811         if (weston_compositor_init(&c->base, display) < 0)
 812                 return NULL;
 813
 814         for (i = 0, x = 0; i < count; i++) {
 815                 if (x11_compositor_create_output(c, x, 0, width, height,
 816                                                  fullscreen) < 0)
 817                         return NULL;
 818                 x += width;
 819         }
 820
 821         if (x11_input_create(c) < 0)
 822                 return NULL;
 823
 824         loop = wl_display_get_event_loop(c->base.wl_display);
 825
 826         c->xcb_source =
 827                 wl_event_loop_add_fd(loop, xcb_get_file_descriptor(c->conn),
 828                                      WL_EVENT_READABLE,
 829                                      x11_compositor_handle_event, c);
 830         wl_event_source_check(c->xcb_source);
 831
 832         return &c->base;
 833 }
 834
 835 struct weston_compositor *
 836 backend_init(struct wl_display *display, char *options);
 837
 838 WL_EXPORT struct weston_compositor *
 839 backend_init(struct wl_display *display, char *options)
 840 {
 841         int width = 1024, height = 640, fullscreen = 0, count = 1, i;
 842         char *p, *value;
 843
 844         static char * const tokens[] = {
 845                 "width", "height", "fullscreen", "output-count", NULL
 846         };
 847
 848         p = options;
 849         while (i = getsubopt(&p, tokens, &value), i != -1) {
 850                 switch (i) {
 851                 case 0:
 852                         width = strtol(value, NULL, 0);
 853                         break;
 854                 case 1:
 855                         height = strtol(value, NULL, 0);
 856                         break;
 857                 case 2:
 858                         fullscreen = 1;
 859                         break;
 860                 case 3:
 861                         count = strtol(value, NULL, 0);
 862                         break;
 863                 }
 864         }
 865
 866         return x11_compositor_create(display,
 867                                      width, height, count, fullscreen);
 868 }