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 #include "../shared/config-parser.h"
  47
  48 struct x11_compositor {
  49         struct weston_compositor         base;
  50
  51         EGLSurface               dummy_pbuffer;
  52
  53         Display                 *dpy;
  54         xcb_connection_t        *conn;
  55         xcb_screen_t            *screen;
  56         xcb_cursor_t             null_cursor;
  57         struct wl_array          keys;
  58         struct wl_event_source  *xcb_source;
  59         struct {
  60                 xcb_atom_t               wm_protocols;
  61                 xcb_atom_t               wm_normal_hints;
  62                 xcb_atom_t               wm_size_hints;
  63                 xcb_atom_t               wm_delete_window;
  64                 xcb_atom_t               wm_class;
  65                 xcb_atom_t               net_wm_name;
  66                 xcb_atom_t               net_wm_icon;
  67                 xcb_atom_t               net_wm_state;
  68                 xcb_atom_t               net_wm_state_fullscreen;
  69                 xcb_atom_t               string;
  70                 xcb_atom_t               utf8_string;
  71                 xcb_atom_t               cardinal;
  72         } atom;
  73 };
  74
  75 struct x11_output {
  76         struct weston_output    base;
  77
  78         xcb_window_t            window;
  79         EGLSurface              egl_surface;
  80         struct weston_mode      mode;
  81         struct wl_event_source *finish_frame_timer;
  82 };
  83
  84 struct x11_input {
  85         struct weston_input_device base;
  86 };
  87
  88
  89 static int
  90 x11_input_create(struct x11_compositor *c)
  91 {
  92         struct x11_input *input;
  93
  94         input = malloc(sizeof *input);
  95         if (input == NULL)
  96                 return -1;
  97
  98         memset(input, 0, sizeof *input);
  99         weston_input_device_init(&input->base, &c->base);
 100
 101         c->base.input_device = &input->base.input_device;
 102
 103         return 0;
 104 }
 105
 106 static void
 107 x11_input_destroy(struct x11_compositor *compositor)
 108 {
 109         struct x11_input *input = container_of(compositor->base.input_device,
 110                                                struct x11_input,
 111                                                base.input_device);
 112
 113         weston_input_device_release(&input->base);
 114         free(input);
 115 }
 116
 117 static int
 118 x11_compositor_init_egl(struct x11_compositor *c)
 119 {
 120         EGLint major, minor;
 121         EGLint n;
 122         EGLint config_attribs[] = {
 123                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 124                 EGL_RED_SIZE, 1,
 125                 EGL_GREEN_SIZE, 1,
 126                 EGL_BLUE_SIZE, 1,
 127                 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
 128                 EGL_NONE
 129         };
 130         static const EGLint context_attribs[] = {
 131                 EGL_CONTEXT_CLIENT_VERSION, 2,
 132                 EGL_NONE
 133         };
 134
 135         static const EGLint pbuffer_attribs[] = {
 136                 EGL_WIDTH, 10,
 137                 EGL_HEIGHT, 10,
 138                 EGL_NONE
 139         };
 140
 141         c->base.display = eglGetDisplay(c->dpy);
 142         if (c->base.display == NULL) {
 143                 fprintf(stderr, "failed to create display\n");
 144                 return -1;
 145         }
 146
 147         if (!eglInitialize(c->base.display, &major, &minor)) {
 148                 fprintf(stderr, "failed to initialize display\n");
 149                 return -1;
 150         }
 151
 152         if (!eglBindAPI(EGL_OPENGL_ES_API)) {
 153                 fprintf(stderr, "failed to bind EGL_OPENGL_ES_API\n");
 154                 return -1;
 155         }
 156         if (!eglChooseConfig(c->base.display, config_attribs,
 157                              &c->base.config, 1, &n) || n == 0) {
 158                 fprintf(stderr, "failed to choose config: %d\n", n);
 159                 return -1;
 160         }
 161
 162         c->base.context = eglCreateContext(c->base.display, c->base.config,
 163                                            EGL_NO_CONTEXT, context_attribs);
 164         if (c->base.context == NULL) {
 165                 fprintf(stderr, "failed to create context\n");
 166                 return -1;
 167         }
 168
 169         c->dummy_pbuffer = eglCreatePbufferSurface(c->base.display,
 170                                                    c->base.config,
 171                                                    pbuffer_attribs);
 172         if (c->base.context == NULL) {
 173                 fprintf(stderr, "failed to create dummy pbuffer\n");
 174                 return -1;
 175         }
 176
 177         if (!eglMakeCurrent(c->base.display, EGL_NO_SURFACE,
 178                             EGL_NO_SURFACE, c->base.context)) {
 179                 fprintf(stderr, "failed to make context current\n");
 180                 return -1;
 181         }
 182
 183         return 0;
 184 }
 185
 186 static void
 187 x11_compositor_fini_egl(struct x11_compositor *compositor)
 188 {
 189         eglMakeCurrent(compositor->base.display,
 190                        EGL_NO_SURFACE, EGL_NO_SURFACE,
 191                        EGL_NO_CONTEXT);
 192
 193         eglTerminate(compositor->base.display);
 194         eglReleaseThread();
 195 }
 196
 197 static void
 198 x11_output_repaint(struct weston_output *output_base,
 199                    pixman_region32_t *damage)
 200 {
 201         struct x11_output *output = (struct x11_output *)output_base;
 202         struct x11_compositor *compositor =
 203                 (struct x11_compositor *)output->base.compositor;
 204         struct weston_surface *surface;
 205
 206         if (!eglMakeCurrent(compositor->base.display, output->egl_surface,
 207                             output->egl_surface, compositor->base.context)) {
 208                 fprintf(stderr, "failed to make current\n");
 209                 return;
 210         }
 211
 212         wl_list_for_each_reverse(surface, &compositor->base.surface_list, link)
 213                 weston_surface_draw(surface, &output->base, damage);
 214
 215         weston_output_do_read_pixels(&output->base);
 216
 217         eglSwapBuffers(compositor->base.display, output->egl_surface);
 218
 219         wl_event_source_timer_update(output->finish_frame_timer, 10);
 220 }
 221
 222 static int
 223 finish_frame_handler(void *data)
 224 {
 225         struct x11_output *output = data;
 226         uint32_t msec;
 227         struct timeval tv;
 228
 229         gettimeofday(&tv, NULL);
 230         msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
 231         weston_output_finish_frame(&output->base, msec);
 232
 233         return 1;
 234 }
 235
 236 static void
 237 x11_output_destroy(struct weston_output *output_base)
 238 {
 239         struct x11_output *output = (struct x11_output *)output_base;
 240         struct x11_compositor *compositor =
 241                 (struct x11_compositor *)output->base.compositor;
 242
 243         wl_list_remove(&output->base.link);
 244         wl_event_source_remove(output->finish_frame_timer);
 245
 246         eglDestroySurface(compositor->base.display, output->egl_surface);
 247
 248         xcb_destroy_window(compositor->conn, output->window);
 249
 250         weston_output_destroy(&output->base);
 251
 252         free(output);
 253 }
 254
 255 static void
 256 x11_output_set_wm_protocols(struct x11_output *output)
 257 {
 258         xcb_atom_t list[1];
 259         struct x11_compositor *c =
 260                 (struct x11_compositor *) output->base.compositor;
 261
 262         list[0] = c->atom.wm_delete_window;
 263         xcb_change_property (c->conn,
 264                              XCB_PROP_MODE_REPLACE,
 265                              output->window,
 266                              c->atom.wm_protocols,
 267                              XCB_ATOM_ATOM,
 268                              32,
 269                              ARRAY_LENGTH(list),
 270                              list);
 271 }
 272
 273 static void
 274 x11_output_change_state(struct x11_output *output, int add, xcb_atom_t state)
 275 {
 276         xcb_client_message_event_t event;
 277         struct x11_compositor *c =
 278                 (struct x11_compositor *) output->base.compositor;
 279         xcb_screen_iterator_t iter;
 280
 281 #define _NET_WM_STATE_REMOVE        0    /* remove/unset property */
 282 #define _NET_WM_STATE_ADD           1    /* add/set property */
 283 #define _NET_WM_STATE_TOGGLE        2    /* toggle property  */
 284
 285         memset(&event, 0, sizeof event);
 286         event.response_type = XCB_CLIENT_MESSAGE;
 287         event.format = 32;
 288         event.window = output->window;
 289         event.type = c->atom.net_wm_state;
 290
 291         event.data.data32[0] = add ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
 292         event.data.data32[1] = state;
 293         event.data.data32[2] = 0;
 294         event.data.data32[3] = 0;
 295         event.data.data32[4] = 0;
 296
 297         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 298         xcb_send_event(c->conn, 0, iter.data->root,
 299                        XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
 300                        XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT,
 301                        (void *) &event);
 302 }
 303
 304
 305 struct wm_normal_hints {
 306         uint32_t flags;
 307         uint32_t pad[4];
 308         int32_t min_width, min_height;
 309         int32_t max_width, max_height;
 310         int32_t width_inc, height_inc;
 311         int32_t min_aspect_x, min_aspect_y;
 312         int32_t max_aspect_x, max_aspect_y;
 313         int32_t base_width, base_height;
 314         int32_t win_gravity;
 315 };
 316
 317 #define WM_NORMAL_HINTS_MIN_SIZE        16
 318 #define WM_NORMAL_HINTS_MAX_SIZE        32
 319
 320 static void
 321 x11_output_set_icon(struct x11_compositor *c,
 322                     struct x11_output *output, const char *filename)
 323 {
 324         uint32_t *icon;
 325         int32_t width, height;
 326         pixman_image_t *image;
 327
 328         image = load_image(filename);
 329         if (!image)
 330                 return;
 331         width = pixman_image_get_width(image);
 332         height = pixman_image_get_height(image);
 333         icon = malloc(width * height * 4 + 8);
 334         if (!icon) {
 335                 pixman_image_unref(image);
 336                 return;
 337         }
 338
 339         icon[0] = width;
 340         icon[1] = height;
 341         memcpy(icon + 2, pixman_image_get_data(image), width * height * 4);
 342         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 343                             c->atom.net_wm_icon, c->atom.cardinal, 32,
 344                             width * height + 2, icon);
 345         free(icon);
 346         pixman_image_unref(image);
 347 }
 348
 349 static int
 350 x11_compositor_create_output(struct x11_compositor *c, int x, int y,
 351                              int width, int height, int fullscreen)
 352 {
 353         static const char name[] = "Weston Compositor";
 354         static const char class[] = "weston-1\0Weston Compositor";
 355         struct x11_output *output;
 356         xcb_screen_iterator_t iter;
 357         struct wm_normal_hints normal_hints;
 358         struct wl_event_loop *loop;
 359         uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
 360         uint32_t values[2] = {
 361                 XCB_EVENT_MASK_KEY_PRESS |
 362                 XCB_EVENT_MASK_KEY_RELEASE |
 363                 XCB_EVENT_MASK_BUTTON_PRESS |
 364                 XCB_EVENT_MASK_BUTTON_RELEASE |
 365                 XCB_EVENT_MASK_POINTER_MOTION |
 366                 XCB_EVENT_MASK_EXPOSURE |
 367                 XCB_EVENT_MASK_STRUCTURE_NOTIFY |
 368                 XCB_EVENT_MASK_ENTER_WINDOW |
 369                 XCB_EVENT_MASK_LEAVE_WINDOW |
 370                 XCB_EVENT_MASK_KEYMAP_STATE |
 371                 XCB_EVENT_MASK_FOCUS_CHANGE,
 372                 0
 373         };
 374
 375         output = malloc(sizeof *output);
 376         if (output == NULL)
 377                 return -1;
 378
 379         memset(output, 0, sizeof *output);
 380
 381         output->mode.flags =
 382                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 383         output->mode.width = width;
 384         output->mode.height = height;
 385         output->mode.refresh = 60;
 386         wl_list_init(&output->base.mode_list);
 387         wl_list_insert(&output->base.mode_list, &output->mode.link);
 388
 389         output->base.current = &output->mode;
 390         weston_output_init(&output->base, &c->base, x, y, width, height,
 391                          WL_OUTPUT_FLIPPED);
 392
 393         values[1] = c->null_cursor;
 394         output->window = xcb_generate_id(c->conn);
 395         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 396         xcb_create_window(c->conn,
 397                           XCB_COPY_FROM_PARENT,
 398                           output->window,
 399                           iter.data->root,
 400                           0, 0,
 401                           width, height,
 402                           0,
 403                           XCB_WINDOW_CLASS_INPUT_OUTPUT,
 404                           iter.data->root_visual,
 405                           mask, values);
 406
 407         /* Don't resize me. */
 408         memset(&normal_hints, 0, sizeof normal_hints);
 409         normal_hints.flags =
 410                 WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
 411         normal_hints.min_width = width;
 412         normal_hints.min_height = height;
 413         normal_hints.max_width = width;
 414         normal_hints.max_height = height;
 415         xcb_change_property (c->conn, XCB_PROP_MODE_REPLACE, output->window,
 416                              c->atom.wm_normal_hints,
 417                              c->atom.wm_size_hints, 32,
 418                              sizeof normal_hints / 4,
 419                              (uint8_t *) &normal_hints);
 420
 421         /* Set window name.  Don't bother with non-EWMH WMs. */
 422         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 423                             c->atom.net_wm_name, c->atom.utf8_string, 8,
 424                             strlen(name), name);
 425         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 426                             c->atom.wm_class, c->atom.string, 8,
 427                             sizeof class, class);
 428
 429         x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
 430
 431         xcb_map_window(c->conn, output->window);
 432
 433         x11_output_set_wm_protocols(output);
 434
 435         if (fullscreen)
 436                 x11_output_change_state(output, 1,
 437                                         c->atom.net_wm_state_fullscreen);
 438
 439         output->egl_surface =
 440                 eglCreateWindowSurface(c->base.display, c->base.config,
 441                                        output->window, NULL);
 442         if (!output->egl_surface) {
 443                 fprintf(stderr, "failed to create window surface\n");
 444                 return -1;
 445         }
 446         if (!eglMakeCurrent(c->base.display, output->egl_surface,
 447                             output->egl_surface, c->base.context)) {
 448                 fprintf(stderr, "failed to make surface current\n");
 449                 return -1;
 450         }
 451
 452         loop = wl_display_get_event_loop(c->base.wl_display);
 453         output->finish_frame_timer =
 454                 wl_event_loop_add_timer(loop, finish_frame_handler, output);
 455
 456         output->base.origin = output->base.current;
 457         output->base.repaint = x11_output_repaint;
 458         output->base.destroy = x11_output_destroy;
 459         output->base.assign_planes = NULL;
 460         output->base.set_backlight = NULL;
 461         output->base.set_dpms = NULL;
 462         output->base.switch_mode = NULL;
 463
 464         wl_list_insert(c->base.output_list.prev, &output->base.link);
 465
 466         return 0;
 467 }
 468
 469 static struct x11_output *
 470 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 471 {
 472         struct x11_output *output;
 473
 474         wl_list_for_each(output, &c->base.output_list, base.link) {
 475                 if (output->window == window)
 476                         return output;
 477         }
 478
 479         return NULL;
 480 }
 481
 482 static void
 483 x11_compositor_deliver_button_event(struct x11_compositor *c,
 484                                     xcb_generic_event_t *event, int state)
 485 {
 486         xcb_button_press_event_t *button_event =
 487                 (xcb_button_press_event_t *) event;
 488         int button;
 489
 490         switch (button_event->detail) {
 491         default:
 492                 button = button_event->detail + BTN_LEFT - 1;
 493                 break;
 494         case 2:
 495                 button = BTN_MIDDLE;
 496                 break;
 497         case 3:
 498                 button = BTN_RIGHT;
 499                 break;
 500         case 4:
 501                 if (state)
 502                         notify_axis(c->base.input_device,
 503                                       weston_compositor_get_time(),
 504                                       WL_INPUT_DEVICE_AXIS_VERTICAL_SCROLL, 1);
 505                 return;
 506         case 5:
 507                 if (state)
 508                         notify_axis(c->base.input_device,
 509                                       weston_compositor_get_time(),
 510                                       WL_INPUT_DEVICE_AXIS_VERTICAL_SCROLL, -1);
 511                 return;
 512         case 6:
 513                 if (state)
 514                         notify_axis(c->base.input_device,
 515                                       weston_compositor_get_time(),
 516                                       WL_INPUT_DEVICE_AXIS_HORIZONTAL_SCROLL, 1);
 517                 return;
 518         case 7:
 519                 if (state)
 520                         notify_axis(c->base.input_device,
 521                                       weston_compositor_get_time(),
 522                                       WL_INPUT_DEVICE_AXIS_HORIZONTAL_SCROLL, -1);
 523                 return;
 524         }
 525
 526         notify_button(c->base.input_device,
 527                       weston_compositor_get_time(), button, state);
 528 }
 529
 530 static int
 531 x11_compositor_next_event(struct x11_compositor *c,
 532                           xcb_generic_event_t **event, uint32_t mask)
 533 {
 534         if (mask & WL_EVENT_READABLE) {
 535                 *event = xcb_poll_for_event(c->conn);
 536         } else {
 537 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
 538                 *event = xcb_poll_for_queued_event(c->conn);
 539 #else
 540                 *event = xcb_poll_for_event(c->conn);
 541 #endif
 542         }
 543
 544         return *event != NULL;
 545 }
 546
 547 static int
 548 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
 549 {
 550         struct x11_compositor *c = data;
 551         struct x11_output *output;
 552         xcb_generic_event_t *event, *prev;
 553         xcb_client_message_event_t *client_message;
 554         xcb_motion_notify_event_t *motion_notify;
 555         xcb_enter_notify_event_t *enter_notify;
 556         xcb_key_press_event_t *key_press, *key_release;
 557         xcb_keymap_notify_event_t *keymap_notify;
 558         xcb_focus_in_event_t *focus_in;
 559         xcb_atom_t atom;
 560         uint32_t *k;
 561         uint32_t i, set;
 562
 563         prev = NULL;
 564         while (x11_compositor_next_event(c, &event, mask)) {
 565                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
 566                 case XCB_KEY_RELEASE:
 567                         key_release = (xcb_key_press_event_t *) prev;
 568                         key_press = (xcb_key_press_event_t *) event;
 569                         if ((event->response_type & ~0x80) == XCB_KEY_PRESS &&
 570                             key_release->time == key_press->time &&
 571                             key_release->detail == key_press->detail) {
 572                                 /* Don't deliver the held key release
 573                                  * event or the new key press event. */
 574                                 free(event);
 575                                 free(prev);
 576                                 prev = NULL;
 577                                 continue;
 578                         } else {
 579                                 /* Deliver the held key release now
 580                                  * and fall through and handle the new
 581                                  * event below. */
 582                                 notify_key(c->base.input_device,
 583                                            weston_compositor_get_time(),
 584                                            key_release->detail - 8, 0);
 585                                 free(prev);
 586                                 prev = NULL;
 587                                 break;
 588                         }
 589
 590                 case XCB_FOCUS_IN:
 591                         /* assert event is keymap_notify */
 592                         focus_in = (xcb_focus_in_event_t *) prev;
 593                         keymap_notify = (xcb_keymap_notify_event_t *) event;
 594                         c->keys.size = 0;
 595                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
 596                                 set = keymap_notify->keys[i >> 3] &
 597                                         (1 << (i & 7));
 598                                 if (set) {
 599                                         k = wl_array_add(&c->keys, sizeof *k);
 600                                         *k = i;
 601                                 }
 602                         }
 603
 604                         output = x11_compositor_find_output(c, focus_in->event);
 605                         notify_keyboard_focus(c->base.input_device, &c->keys);
 606
 607                         free(prev);
 608                         prev = NULL;
 609                         break;
 610
 611                 default:
 612                         /* No previous event held */
 613                         break;
 614                 }
 615
 616                 switch (event->response_type & ~0x80) {
 617                 case XCB_KEY_PRESS:
 618                         key_press = (xcb_key_press_event_t *) event;
 619                         notify_key(c->base.input_device,
 620                                    weston_compositor_get_time(),
 621                                    key_press->detail - 8, 1);
 622                         break;
 623                 case XCB_KEY_RELEASE:
 624                         prev = event;
 625                         break;
 626                 case XCB_BUTTON_PRESS:
 627                         x11_compositor_deliver_button_event(c, event, 1);
 628                         break;
 629                 case XCB_BUTTON_RELEASE:
 630                         x11_compositor_deliver_button_event(c, event, 0);
 631                         break;
 632                 case XCB_MOTION_NOTIFY:
 633                         motion_notify = (xcb_motion_notify_event_t *) event;
 634                         output = x11_compositor_find_output(c, motion_notify->event);
 635                         notify_motion(c->base.input_device,
 636                                       weston_compositor_get_time(),
 637                                       output->base.x + motion_notify->event_x,
 638                                       output->base.y + motion_notify->event_y);
 639                         break;
 640
 641                 case XCB_EXPOSE:
 642                         /* FIXME: schedule output repaint */
 643                         /* output = x11_compositor_find_output(c, expose->window); */
 644
 645                         weston_compositor_schedule_repaint(&c->base);
 646                         break;
 647
 648                 case XCB_ENTER_NOTIFY:
 649                         enter_notify = (xcb_enter_notify_event_t *) event;
 650                         if (enter_notify->state >= Button1Mask)
 651                                 break;
 652                         output = x11_compositor_find_output(c, enter_notify->event);
 653                         notify_pointer_focus(c->base.input_device,
 654                                              &output->base,
 655                                              output->base.x + enter_notify->event_x,
 656                                              output->base.y + enter_notify->event_y);
 657                         break;
 658
 659                 case XCB_LEAVE_NOTIFY:
 660                         enter_notify = (xcb_enter_notify_event_t *) event;
 661                         if (enter_notify->state >= Button1Mask)
 662                                 break;
 663                         output = x11_compositor_find_output(c, enter_notify->event);
 664                         notify_pointer_focus(c->base.input_device, NULL,
 665                                              output->base.x + enter_notify->event_x,
 666                                              output->base.y + enter_notify->event_y);
 667                         break;
 668
 669                 case XCB_CLIENT_MESSAGE:
 670                         client_message = (xcb_client_message_event_t *) event;
 671                         atom = client_message->data.data32[0];
 672                         if (atom == c->atom.wm_delete_window)
 673                                 wl_display_terminate(c->base.wl_display);
 674                         break;
 675
 676                 case XCB_FOCUS_IN:
 677                         focus_in = (xcb_focus_in_event_t *) event;
 678                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
 679                                 break;
 680
 681                         prev = event;
 682                         break;
 683
 684                 case XCB_FOCUS_OUT:
 685                         focus_in = (xcb_focus_in_event_t *) event;
 686                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
 687                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
 688                                 break;
 689                         notify_keyboard_focus(c->base.input_device, 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         unsigned 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         xcb_screen_iterator_t s;
 789         int i, x;
 790
 791         c = malloc(sizeof *c);
 792         if (c == NULL)
 793                 return NULL;
 794
 795         memset(c, 0, sizeof *c);
 796
 797         c->dpy = XOpenDisplay(NULL);
 798         if (c->dpy == NULL)
 799                 return NULL;
 800
 801         c->conn = XGetXCBConnection(c->dpy);
 802         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
 803
 804         if (xcb_connection_has_error(c->conn))
 805                 return NULL;
 806
 807         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 808         c->screen = s.data;
 809         wl_array_init(&c->keys);
 810
 811         x11_compositor_get_resources(c);
 812
 813         c->base.wl_display = display;
 814         if (x11_compositor_init_egl(c) < 0)
 815                 return NULL;
 816
 817         c->base.destroy = x11_destroy;
 818
 819         /* Can't init base class until we have a current egl context */
 820         if (weston_compositor_init(&c->base, display) < 0)
 821                 return NULL;
 822
 823         for (i = 0, x = 0; i < count; i++) {
 824                 if (x11_compositor_create_output(c, x, 0, width, height,
 825                                                  fullscreen) < 0)
 826                         return NULL;
 827                 x += width;
 828         }
 829
 830         if (x11_input_create(c) < 0)
 831                 return NULL;
 832
 833         c->xcb_source =
 834                 wl_event_loop_add_fd(c->base.input_loop,
 835                                      xcb_get_file_descriptor(c->conn),
 836                                      WL_EVENT_READABLE,
 837                                      x11_compositor_handle_event, c);
 838         wl_event_source_check(c->xcb_source);
 839
 840         return &c->base;
 841 }
 842
 843 WL_EXPORT struct weston_compositor *
 844 backend_init(struct wl_display *display, int argc, char *argv[])
 845 {
 846         int width = 1024, height = 640, fullscreen = 0, count = 1;
 847
 848         const struct weston_option x11_options[] = {
 849                 { WESTON_OPTION_INTEGER, "width", 0, &width },
 850                 { WESTON_OPTION_INTEGER, "height", 0, &height },
 851                 { WESTON_OPTION_BOOLEAN, "fullscreen", 0, &fullscreen },
 852                 { WESTON_OPTION_INTEGER, "output-count", 0, &count },
 853         };
 854
 855         parse_options(x11_options, ARRAY_LENGTH(x11_options), argc, argv);
 856
 857         return x11_compositor_create(display,
 858                                      width, height, count, fullscreen);
 859 }