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 int
 189 x11_output_prepare_render(struct weston_output *output_base)
 190 {
 191         struct x11_output *output = (struct x11_output *) output_base;
 192         struct weston_compositor *ec = output->base.compositor;
 193
 194         if (!eglMakeCurrent(ec->display, output->egl_surface,
 195                             output->egl_surface, ec->context)) {
 196                 fprintf(stderr, "failed to make current\n");
 197                 return -1;
 198         }
 199
 200         return 0;
 201 }
 202
 203 static int
 204 finish_frame_handler(void *data)
 205 {
 206         struct x11_output *output = data;
 207         uint32_t msec;
 208         struct timeval tv;
 209
 210         gettimeofday(&tv, NULL);
 211         msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
 212         weston_output_finish_frame(&output->base, msec);
 213
 214         return 1;
 215 }
 216
 217 static int
 218 x11_output_present(struct weston_output *output_base)
 219 {
 220         struct x11_output *output = (struct x11_output *) output_base;
 221         struct weston_compositor *ec = output->base.compositor;
 222
 223         if (x11_output_prepare_render(&output->base))
 224                 return -1;
 225
 226         eglSwapBuffers(ec->display, output->egl_surface);
 227
 228         wl_event_source_timer_update(output->finish_frame_timer, 10);
 229
 230         return 0;
 231 }
 232
 233 static int
 234 x11_output_prepare_scanout_surface(struct weston_output *output_base,
 235                                    struct weston_surface *es)
 236 {
 237         return -1;
 238 }
 239
 240 static int
 241 x11_output_set_cursor(struct weston_output *output_base,
 242                       struct weston_input_device *input)
 243 {
 244         return -1;
 245 }
 246
 247 static void
 248 x11_output_destroy(struct weston_output *output_base)
 249 {
 250         struct x11_output *output = (struct x11_output *)output_base;
 251         struct x11_compositor *compositor =
 252                 (struct x11_compositor *)output->base.compositor;
 253
 254         wl_list_remove(&output->base.link);
 255         wl_event_source_remove(output->finish_frame_timer);
 256
 257         eglDestroySurface(compositor->base.display, output->egl_surface);
 258
 259         xcb_destroy_window(compositor->conn, output->window);
 260
 261         weston_output_destroy(&output->base);
 262
 263         free(output);
 264 }
 265
 266 static void
 267 x11_output_set_wm_protocols(struct x11_output *output)
 268 {
 269         xcb_atom_t list[1];
 270         struct x11_compositor *c =
 271                 (struct x11_compositor *) output->base.compositor;
 272
 273         list[0] = c->atom.wm_delete_window;
 274         xcb_change_property (c->conn,
 275                              XCB_PROP_MODE_REPLACE,
 276                              output->window,
 277                              c->atom.wm_protocols,
 278                              XCB_ATOM_ATOM,
 279                              32,
 280                              ARRAY_LENGTH(list),
 281                              list);
 282 }
 283
 284 static void
 285 x11_output_change_state(struct x11_output *output, int add, xcb_atom_t state)
 286 {
 287         xcb_client_message_event_t event;
 288         struct x11_compositor *c =
 289                 (struct x11_compositor *) output->base.compositor;
 290         xcb_screen_iterator_t iter;
 291
 292 #define _NET_WM_STATE_REMOVE        0    /* remove/unset property */
 293 #define _NET_WM_STATE_ADD           1    /* add/set property */
 294 #define _NET_WM_STATE_TOGGLE        2    /* toggle property  */
 295
 296         memset(&event, 0, sizeof event);
 297         event.response_type = XCB_CLIENT_MESSAGE;
 298         event.format = 32;
 299         event.window = output->window;
 300         event.type = c->atom.net_wm_state;
 301
 302         event.data.data32[0] = add ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
 303         event.data.data32[1] = state;
 304         event.data.data32[2] = 0;
 305         event.data.data32[3] = 0;
 306         event.data.data32[4] = 0;
 307
 308         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 309         xcb_send_event(c->conn, 0, iter.data->root,
 310                        XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
 311                        XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT,
 312                        (void *) &event);
 313 }
 314
 315
 316 struct wm_normal_hints {
 317         uint32_t flags;
 318         uint32_t pad[4];
 319         int32_t min_width, min_height;
 320         int32_t max_width, max_height;
 321         int32_t width_inc, height_inc;
 322         int32_t min_aspect_x, min_aspect_y;
 323         int32_t max_aspect_x, max_aspect_y;
 324         int32_t base_width, base_height;
 325         int32_t win_gravity;
 326 };
 327
 328 #define WM_NORMAL_HINTS_MIN_SIZE        16
 329 #define WM_NORMAL_HINTS_MAX_SIZE        32
 330
 331 static void
 332 x11_output_set_icon(struct x11_compositor *c,
 333                     struct x11_output *output, const char *filename)
 334 {
 335         uint32_t *icon, *pixels, stride;
 336         int32_t width, height;
 337
 338         pixels = weston_load_image(filename, &width, &height, &stride);
 339         if (!pixels)
 340                 return;
 341         icon = malloc(width * height * 4 + 8);
 342         if (!icon) {
 343                 free(pixels);
 344                 return;
 345         }
 346
 347         icon[0] = width;
 348         icon[1] = height;
 349         memcpy(icon + 2, pixels, width * height * 4);
 350         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 351                             c->atom.net_wm_icon, c->atom.cardinal, 32,
 352                             width * height + 2, icon);
 353         free(icon);
 354         free(pixels);
 355 }
 356
 357 static int
 358 x11_compositor_create_output(struct x11_compositor *c, int x, int y,
 359                              int width, int height, int fullscreen)
 360 {
 361         static const char name[] = "Weston Compositor";
 362         static const char class[] = "weston-1\0Weston Compositor";
 363         struct x11_output *output;
 364         xcb_screen_iterator_t iter;
 365         struct wm_normal_hints normal_hints;
 366         struct wl_event_loop *loop;
 367         uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
 368         uint32_t values[2] = {
 369                 XCB_EVENT_MASK_KEY_PRESS |
 370                 XCB_EVENT_MASK_KEY_RELEASE |
 371                 XCB_EVENT_MASK_BUTTON_PRESS |
 372                 XCB_EVENT_MASK_BUTTON_RELEASE |
 373                 XCB_EVENT_MASK_POINTER_MOTION |
 374                 XCB_EVENT_MASK_EXPOSURE |
 375                 XCB_EVENT_MASK_STRUCTURE_NOTIFY |
 376                 XCB_EVENT_MASK_ENTER_WINDOW |
 377                 XCB_EVENT_MASK_LEAVE_WINDOW |
 378                 XCB_EVENT_MASK_KEYMAP_STATE |
 379                 XCB_EVENT_MASK_FOCUS_CHANGE,
 380                 0
 381         };
 382
 383         output = malloc(sizeof *output);
 384         if (output == NULL)
 385                 return -1;
 386
 387         memset(output, 0, sizeof *output);
 388
 389         output->mode.flags =
 390                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 391         output->mode.width = width;
 392         output->mode.height = height;
 393         output->mode.refresh = 60;
 394         wl_list_init(&output->base.mode_list);
 395         wl_list_insert(&output->base.mode_list, &output->mode.link);
 396
 397         output->base.current = &output->mode;
 398         weston_output_init(&output->base, &c->base, x, y, width, height,
 399                          WL_OUTPUT_FLIPPED);
 400
 401         values[1] = c->null_cursor;
 402         output->window = xcb_generate_id(c->conn);
 403         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 404         xcb_create_window(c->conn,
 405                           XCB_COPY_FROM_PARENT,
 406                           output->window,
 407                           iter.data->root,
 408                           0, 0,
 409                           width, height,
 410                           0,
 411                           XCB_WINDOW_CLASS_INPUT_OUTPUT,
 412                           iter.data->root_visual,
 413                           mask, values);
 414
 415         /* Don't resize me. */
 416         memset(&normal_hints, 0, sizeof normal_hints);
 417         normal_hints.flags =
 418                 WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
 419         normal_hints.min_width = width;
 420         normal_hints.min_height = height;
 421         normal_hints.max_width = width;
 422         normal_hints.max_height = height;
 423         xcb_change_property (c->conn, XCB_PROP_MODE_REPLACE, output->window,
 424                              c->atom.wm_normal_hints,
 425                              c->atom.wm_size_hints, 32,
 426                              sizeof normal_hints / 4,
 427                              (uint8_t *) &normal_hints);
 428
 429         /* Set window name.  Don't bother with non-EWMH WMs. */
 430         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 431                             c->atom.net_wm_name, c->atom.utf8_string, 8,
 432                             strlen(name), name);
 433         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 434                             c->atom.wm_class, c->atom.string, 8,
 435                             sizeof class, class);
 436
 437         x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
 438
 439         xcb_map_window(c->conn, output->window);
 440
 441         x11_output_set_wm_protocols(output);
 442
 443         if (fullscreen)
 444                 x11_output_change_state(output, 1,
 445                                         c->atom.net_wm_state_fullscreen);
 446
 447         output->egl_surface =
 448                 eglCreateWindowSurface(c->base.display, c->base.config,
 449                                        output->window, NULL);
 450         if (!output->egl_surface) {
 451                 fprintf(stderr, "failed to create window surface\n");
 452                 return -1;
 453         }
 454         if (!eglMakeCurrent(c->base.display, output->egl_surface,
 455                             output->egl_surface, c->base.context)) {
 456                 fprintf(stderr, "failed to make surface current\n");
 457                 return -1;
 458         }
 459
 460         loop = wl_display_get_event_loop(c->base.wl_display);
 461         output->finish_frame_timer =
 462                 wl_event_loop_add_timer(loop, finish_frame_handler, output);
 463
 464         output->base.prepare_render = x11_output_prepare_render;
 465         output->base.present = x11_output_present;
 466         output->base.prepare_scanout_surface =
 467                 x11_output_prepare_scanout_surface;
 468         output->base.set_hardware_cursor = x11_output_set_cursor;
 469         output->base.destroy = x11_output_destroy;
 470
 471         wl_list_insert(c->base.output_list.prev, &output->base.link);
 472
 473         return 0;
 474 }
 475
 476 static struct x11_output *
 477 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 478 {
 479         struct x11_output *output;
 480
 481         wl_list_for_each(output, &c->base.output_list, base.link) {
 482                 if (output->window == window)
 483                         return output;
 484         }
 485
 486         return NULL;
 487 }
 488
 489 static void
 490 x11_compositor_deliver_button_event(struct x11_compositor *c,
 491                                     xcb_generic_event_t *event, int state)
 492 {
 493         xcb_button_press_event_t *button_event =
 494                 (xcb_button_press_event_t *) event;
 495         int button;
 496
 497         switch (button_event->detail) {
 498         default:
 499                 button = button_event->detail + BTN_LEFT - 1;
 500                 break;
 501         case 2:
 502                 button = BTN_MIDDLE;
 503                 break;
 504         case 3:
 505                 button = BTN_RIGHT;
 506                 break;
 507         case 4:
 508         case 5:
 509         case 6:
 510         case 7:
 511                 /* X11 sends wheel events as buttons events.  But
 512                  * linux input treats as REL_WHEEL, therefore not
 513                  * button type at all. When we update the input
 514                  * protocol and get the 'axis' event, we'll send
 515                  * scroll events as axis events. */
 516                 return;
 517         }
 518
 519         notify_button(c->base.input_device,
 520                       weston_compositor_get_time(), button, state);
 521 }
 522
 523 static int
 524 x11_compositor_next_event(struct x11_compositor *c,
 525                           xcb_generic_event_t **event, uint32_t mask)
 526 {
 527         if (mask & WL_EVENT_READABLE) {
 528                 *event = xcb_poll_for_event(c->conn);
 529         } else {
 530 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
 531                 *event = xcb_poll_for_queued_event(c->conn);
 532 #else
 533                 *event = xcb_poll_for_event(c->conn);
 534 #endif
 535         }
 536
 537         return *event != NULL;
 538 }
 539
 540 static int
 541 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
 542 {
 543         struct x11_compositor *c = data;
 544         struct x11_output *output;
 545         xcb_generic_event_t *event, *prev;
 546         xcb_client_message_event_t *client_message;
 547         xcb_motion_notify_event_t *motion_notify;
 548         xcb_enter_notify_event_t *enter_notify;
 549         xcb_key_press_event_t *key_press, *key_release;
 550         xcb_keymap_notify_event_t *keymap_notify;
 551         xcb_focus_in_event_t *focus_in;
 552         xcb_atom_t atom;
 553         uint32_t *k;
 554         int i, set;
 555
 556         prev = NULL;
 557         while (x11_compositor_next_event(c, &event, mask)) {
 558                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
 559                 case XCB_KEY_RELEASE:
 560                         key_release = (xcb_key_press_event_t *) prev;
 561                         key_press = (xcb_key_press_event_t *) event;
 562                         if ((event->response_type & ~0x80) == XCB_KEY_PRESS &&
 563                             key_release->time == key_press->time &&
 564                             key_release->detail == key_press->detail) {
 565                                 /* Don't deliver the held key release
 566                                  * event or the new key press event. */
 567                                 free(event);
 568                                 free(prev);
 569                                 prev = NULL;
 570                                 continue;
 571                         } else {
 572                                 /* Deliver the held key release now
 573                                  * and fall through and handle the new
 574                                  * event below. */
 575                                 notify_key(c->base.input_device,
 576                                            weston_compositor_get_time(),
 577                                            key_release->detail - 8, 0);
 578                                 free(prev);
 579                                 prev = NULL;
 580                                 break;
 581                         }
 582
 583                 case XCB_FOCUS_IN:
 584                         /* assert event is keymap_notify */
 585                         focus_in = (xcb_focus_in_event_t *) prev;
 586                         keymap_notify = (xcb_keymap_notify_event_t *) event;
 587                         c->keys.size = 0;
 588                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
 589                                 set = keymap_notify->keys[i >> 3] &
 590                                         (1 << (i & 7));
 591                                 if (set) {
 592                                         k = wl_array_add(&c->keys, sizeof *k);
 593                                         *k = i;
 594                                 }
 595                         }
 596
 597                         output = x11_compositor_find_output(c, focus_in->event);
 598                         notify_keyboard_focus(c->base.input_device,
 599                                               weston_compositor_get_time(),
 600                                               &output->base, &c->keys);
 601
 602                         free(prev);
 603                         prev = NULL;
 604                         break;
 605
 606                 default:
 607                         /* No previous event held */
 608                         break;
 609                 }
 610
 611                 switch (event->response_type & ~0x80) {
 612                 case XCB_KEY_PRESS:
 613                         key_press = (xcb_key_press_event_t *) event;
 614                         notify_key(c->base.input_device,
 615                                    weston_compositor_get_time(),
 616                                    key_press->detail - 8, 1);
 617                         break;
 618                 case XCB_KEY_RELEASE:
 619                         prev = event;
 620                         break;
 621                 case XCB_BUTTON_PRESS:
 622                         x11_compositor_deliver_button_event(c, event, 1);
 623                         break;
 624                 case XCB_BUTTON_RELEASE:
 625                         x11_compositor_deliver_button_event(c, event, 0);
 626                         break;
 627                 case XCB_MOTION_NOTIFY:
 628                         motion_notify = (xcb_motion_notify_event_t *) event;
 629                         output = x11_compositor_find_output(c, motion_notify->event);
 630                         notify_motion(c->base.input_device,
 631                                       weston_compositor_get_time(),
 632                                       output->base.x + motion_notify->event_x,
 633                                       output->base.y + motion_notify->event_y);
 634                         break;
 635
 636                 case XCB_EXPOSE:
 637                         /* FIXME: schedule output repaint */
 638                         /* output = x11_compositor_find_output(c, expose->window); */
 639
 640                         weston_compositor_schedule_repaint(&c->base);
 641                         break;
 642
 643                 case XCB_ENTER_NOTIFY:
 644                         enter_notify = (xcb_enter_notify_event_t *) event;
 645                         if (enter_notify->state >= Button1Mask)
 646                                 break;
 647                         output = x11_compositor_find_output(c, enter_notify->event);
 648                         notify_pointer_focus(c->base.input_device,
 649                                              weston_compositor_get_time(),
 650                                              &output->base,
 651                                              output->base.x + enter_notify->event_x,
 652                                              output->base.y + enter_notify->event_y);
 653                         break;
 654
 655                 case XCB_LEAVE_NOTIFY:
 656                         enter_notify = (xcb_enter_notify_event_t *) event;
 657                         if (enter_notify->state >= Button1Mask)
 658                                 break;
 659                         output = x11_compositor_find_output(c, enter_notify->event);
 660                         notify_pointer_focus(c->base.input_device,
 661                                              weston_compositor_get_time(),
 662                                              NULL,
 663                                              output->base.x + enter_notify->event_x,
 664                                              output->base.y + enter_notify->event_y);
 665                         break;
 666
 667                 case XCB_CLIENT_MESSAGE:
 668                         client_message = (xcb_client_message_event_t *) event;
 669                         atom = client_message->data.data32[0];
 670                         if (atom == c->atom.wm_delete_window)
 671                                 wl_display_terminate(c->base.wl_display);
 672                         break;
 673
 674                 case XCB_FOCUS_IN:
 675                         focus_in = (xcb_focus_in_event_t *) event;
 676                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
 677                                 break;
 678
 679                         prev = event;
 680                         break;
 681
 682                 case XCB_FOCUS_OUT:
 683                         focus_in = (xcb_focus_in_event_t *) event;
 684                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
 685                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
 686                                 break;
 687                         notify_keyboard_focus(c->base.input_device,
 688                                               weston_compositor_get_time(),
 689                                               NULL, NULL);
 690                         break;
 691
 692                 default:
 693                         break;
 694                 }
 695
 696                 if (prev != event)
 697                         free (event);
 698         }
 699
 700         switch (prev ? prev->response_type & ~0x80 : 0x80) {
 701         case XCB_KEY_RELEASE:
 702                 key_release = (xcb_key_press_event_t *) prev;
 703                 notify_key(c->base.input_device,
 704                            weston_compositor_get_time(),
 705                            key_release->detail - 8, 0);
 706                 free(prev);
 707                 prev = NULL;
 708                 break;
 709         default:
 710                 break;
 711         }
 712
 713         return event != NULL;
 714 }
 715
 716 #define F(field) offsetof(struct x11_compositor, field)
 717
 718 static void
 719 x11_compositor_get_resources(struct x11_compositor *c)
 720 {
 721         static const struct { const char *name; int offset; } atoms[] = {
 722                 { "WM_PROTOCOLS",       F(atom.wm_protocols) },
 723                 { "WM_NORMAL_HINTS",    F(atom.wm_normal_hints) },
 724                 { "WM_SIZE_HINTS",      F(atom.wm_size_hints) },
 725                 { "WM_DELETE_WINDOW",   F(atom.wm_delete_window) },
 726                 { "WM_CLASS",           F(atom.wm_class) },
 727                 { "_NET_WM_NAME",       F(atom.net_wm_name) },
 728                 { "_NET_WM_ICON",       F(atom.net_wm_icon) },
 729                 { "_NET_WM_STATE",      F(atom.net_wm_state) },
 730                 { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
 731                 { "STRING",             F(atom.string) },
 732                 { "UTF8_STRING",        F(atom.utf8_string) },
 733                 { "CARDINAL",           F(atom.cardinal) },
 734         };
 735
 736         xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
 737         xcb_intern_atom_reply_t *reply;
 738         xcb_pixmap_t pixmap;
 739         xcb_gc_t gc;
 740         int i;
 741         uint8_t data[] = { 0, 0, 0, 0 };
 742
 743         for (i = 0; i < ARRAY_LENGTH(atoms); i++)
 744                 cookies[i] = xcb_intern_atom (c->conn, 0,
 745                                               strlen(atoms[i].name),
 746                                               atoms[i].name);
 747
 748         for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
 749                 reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
 750                 *(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
 751                 free(reply);
 752         }
 753
 754         pixmap = xcb_generate_id(c->conn);
 755         gc = xcb_generate_id(c->conn);
 756         xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
 757         xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
 758         xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
 759                       pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
 760         c->null_cursor = xcb_generate_id(c->conn);
 761         xcb_create_cursor (c->conn, c->null_cursor,
 762                            pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
 763         xcb_free_gc(c->conn, gc);
 764         xcb_free_pixmap(c->conn, pixmap);
 765 }
 766
 767 static void
 768 x11_destroy(struct weston_compositor *ec)
 769 {
 770         struct x11_compositor *compositor = (struct x11_compositor *)ec;
 771
 772         wl_event_source_remove(compositor->xcb_source);
 773         x11_input_destroy(compositor);
 774
 775         weston_compositor_shutdown(ec); /* destroys outputs, too */
 776
 777         x11_compositor_fini_egl(compositor);
 778
 779         XCloseDisplay(compositor->dpy);
 780         free(ec);
 781 }
 782
 783 static struct weston_compositor *
 784 x11_compositor_create(struct wl_display *display,
 785                       int width, int height, int count, int fullscreen)
 786 {
 787         struct x11_compositor *c;
 788         struct wl_event_loop *loop;
 789         xcb_screen_iterator_t s;
 790         int i, x;
 791
 792         c = malloc(sizeof *c);
 793         if (c == NULL)
 794                 return NULL;
 795
 796         memset(c, 0, sizeof *c);
 797
 798         c->dpy = XOpenDisplay(NULL);
 799         if (c->dpy == NULL)
 800                 return NULL;
 801
 802         c->conn = XGetXCBConnection(c->dpy);
 803         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
 804
 805         if (xcb_connection_has_error(c->conn))
 806                 return NULL;
 807
 808         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 809         c->screen = s.data;
 810         wl_array_init(&c->keys);
 811
 812         x11_compositor_get_resources(c);
 813
 814         c->base.wl_display = display;
 815         if (x11_compositor_init_egl(c) < 0)
 816                 return NULL;
 817
 818         c->base.destroy = x11_destroy;
 819
 820         /* Can't init base class until we have a current egl context */
 821         if (weston_compositor_init(&c->base, display) < 0)
 822                 return NULL;
 823
 824         for (i = 0, x = 0; i < count; i++) {
 825                 if (x11_compositor_create_output(c, x, 0, width, height,
 826                                                  fullscreen) < 0)
 827                         return NULL;
 828                 x += width;
 829         }
 830
 831         if (x11_input_create(c) < 0)
 832                 return NULL;
 833
 834         loop = wl_display_get_event_loop(c->base.wl_display);
 835
 836         c->xcb_source =
 837                 wl_event_loop_add_fd(loop, xcb_get_file_descriptor(c->conn),
 838                                      WL_EVENT_READABLE,
 839                                      x11_compositor_handle_event, c);
 840         wl_event_source_check(c->xcb_source);
 841
 842         return &c->base;
 843 }
 844
 845 struct weston_compositor *
 846 backend_init(struct wl_display *display, char *options);
 847
 848 WL_EXPORT struct weston_compositor *
 849 backend_init(struct wl_display *display, char *options)
 850 {
 851         int width = 1024, height = 640, fullscreen = 0, count = 1, i;
 852         char *p, *value;
 853
 854         static char * const tokens[] = {
 855                 "width", "height", "fullscreen", "output-count", NULL
 856         };
 857
 858         p = options;
 859         while (i = getsubopt(&p, tokens, &value), i != -1) {
 860                 switch (i) {
 861                 case 0:
 862                         width = strtol(value, NULL, 0);
 863                         break;
 864                 case 1:
 865                         height = strtol(value, NULL, 0);
 866                         break;
 867                 case 2:
 868                         fullscreen = 1;
 869                         break;
 870                 case 3:
 871                         count = strtol(value, NULL, 0);
 872                         break;
 873                 }
 874         }
 875
 876         return x11_compositor_create(display,
 877                                      width, height, count, fullscreen);
 878 }