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         eglSwapBuffers(compositor->base.display, output->egl_surface);
 216
 217         wl_event_source_timer_update(output->finish_frame_timer, 10);
 218 }
 219
 220 static int
 221 finish_frame_handler(void *data)
 222 {
 223         struct x11_output *output = data;
 224         uint32_t msec;
 225         struct timeval tv;
 226
 227         gettimeofday(&tv, NULL);
 228         msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
 229         weston_output_finish_frame(&output->base, msec);
 230
 231         return 1;
 232 }
 233
 234 static void
 235 x11_output_destroy(struct weston_output *output_base)
 236 {
 237         struct x11_output *output = (struct x11_output *)output_base;
 238         struct x11_compositor *compositor =
 239                 (struct x11_compositor *)output->base.compositor;
 240
 241         wl_list_remove(&output->base.link);
 242         wl_event_source_remove(output->finish_frame_timer);
 243
 244         eglDestroySurface(compositor->base.display, output->egl_surface);
 245
 246         xcb_destroy_window(compositor->conn, output->window);
 247
 248         weston_output_destroy(&output->base);
 249
 250         free(output);
 251 }
 252
 253 static void
 254 x11_output_set_wm_protocols(struct x11_output *output)
 255 {
 256         xcb_atom_t list[1];
 257         struct x11_compositor *c =
 258                 (struct x11_compositor *) output->base.compositor;
 259
 260         list[0] = c->atom.wm_delete_window;
 261         xcb_change_property (c->conn,
 262                              XCB_PROP_MODE_REPLACE,
 263                              output->window,
 264                              c->atom.wm_protocols,
 265                              XCB_ATOM_ATOM,
 266                              32,
 267                              ARRAY_LENGTH(list),
 268                              list);
 269 }
 270
 271 static void
 272 x11_output_change_state(struct x11_output *output, int add, xcb_atom_t state)
 273 {
 274         xcb_client_message_event_t event;
 275         struct x11_compositor *c =
 276                 (struct x11_compositor *) output->base.compositor;
 277         xcb_screen_iterator_t iter;
 278
 279 #define _NET_WM_STATE_REMOVE        0    /* remove/unset property */
 280 #define _NET_WM_STATE_ADD           1    /* add/set property */
 281 #define _NET_WM_STATE_TOGGLE        2    /* toggle property  */
 282
 283         memset(&event, 0, sizeof event);
 284         event.response_type = XCB_CLIENT_MESSAGE;
 285         event.format = 32;
 286         event.window = output->window;
 287         event.type = c->atom.net_wm_state;
 288
 289         event.data.data32[0] = add ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
 290         event.data.data32[1] = state;
 291         event.data.data32[2] = 0;
 292         event.data.data32[3] = 0;
 293         event.data.data32[4] = 0;
 294
 295         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 296         xcb_send_event(c->conn, 0, iter.data->root,
 297                        XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
 298                        XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT,
 299                        (void *) &event);
 300 }
 301
 302
 303 struct wm_normal_hints {
 304         uint32_t flags;
 305         uint32_t pad[4];
 306         int32_t min_width, min_height;
 307         int32_t max_width, max_height;
 308         int32_t width_inc, height_inc;
 309         int32_t min_aspect_x, min_aspect_y;
 310         int32_t max_aspect_x, max_aspect_y;
 311         int32_t base_width, base_height;
 312         int32_t win_gravity;
 313 };
 314
 315 #define WM_NORMAL_HINTS_MIN_SIZE        16
 316 #define WM_NORMAL_HINTS_MAX_SIZE        32
 317
 318 static void
 319 x11_output_set_icon(struct x11_compositor *c,
 320                     struct x11_output *output, const char *filename)
 321 {
 322         uint32_t *icon;
 323         int32_t width, height;
 324         pixman_image_t *image;
 325
 326         image = load_image(filename);
 327         if (!image)
 328                 return;
 329         width = pixman_image_get_width(image);
 330         height = pixman_image_get_height(image);
 331         icon = malloc(width * height * 4 + 8);
 332         if (!icon) {
 333                 pixman_image_unref(image);
 334                 return;
 335         }
 336
 337         icon[0] = width;
 338         icon[1] = height;
 339         memcpy(icon + 2, pixman_image_get_data(image), width * height * 4);
 340         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 341                             c->atom.net_wm_icon, c->atom.cardinal, 32,
 342                             width * height + 2, icon);
 343         free(icon);
 344         pixman_image_unref(image);
 345 }
 346
 347 static void
 348 x11_output_read_pixels(struct weston_output *output_base, void *data)
 349 {
 350         struct x11_output *output = (struct x11_output *) output_base;
 351         struct x11_compositor *compositor =
 352                 (struct x11_compositor *) output->base.compositor;
 353
 354         eglMakeCurrent(compositor->base.display, output->egl_surface,
 355                         output->egl_surface, compositor->base.context);
 356
 357         glReadPixels(0, 0, output_base->current->width,
 358                      output_base->current->height,
 359                      compositor->base.read_format, GL_UNSIGNED_BYTE, data);
 360 }
 361
 362 static int
 363 x11_compositor_create_output(struct x11_compositor *c, int x, int y,
 364                              int width, int height, int fullscreen)
 365 {
 366         static const char name[] = "Weston Compositor";
 367         static const char class[] = "weston-1\0Weston Compositor";
 368         struct x11_output *output;
 369         xcb_screen_iterator_t iter;
 370         struct wm_normal_hints normal_hints;
 371         struct wl_event_loop *loop;
 372         uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
 373         uint32_t values[2] = {
 374                 XCB_EVENT_MASK_KEY_PRESS |
 375                 XCB_EVENT_MASK_KEY_RELEASE |
 376                 XCB_EVENT_MASK_BUTTON_PRESS |
 377                 XCB_EVENT_MASK_BUTTON_RELEASE |
 378                 XCB_EVENT_MASK_POINTER_MOTION |
 379                 XCB_EVENT_MASK_EXPOSURE |
 380                 XCB_EVENT_MASK_STRUCTURE_NOTIFY |
 381                 XCB_EVENT_MASK_ENTER_WINDOW |
 382                 XCB_EVENT_MASK_LEAVE_WINDOW |
 383                 XCB_EVENT_MASK_KEYMAP_STATE |
 384                 XCB_EVENT_MASK_FOCUS_CHANGE,
 385                 0
 386         };
 387
 388         output = malloc(sizeof *output);
 389         if (output == NULL)
 390                 return -1;
 391
 392         memset(output, 0, sizeof *output);
 393
 394         output->mode.flags =
 395                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 396         output->mode.width = width;
 397         output->mode.height = height;
 398         output->mode.refresh = 60;
 399         wl_list_init(&output->base.mode_list);
 400         wl_list_insert(&output->base.mode_list, &output->mode.link);
 401
 402         output->base.current = &output->mode;
 403         weston_output_init(&output->base, &c->base, x, y, width, height,
 404                          WL_OUTPUT_FLIPPED);
 405
 406         values[1] = c->null_cursor;
 407         output->window = xcb_generate_id(c->conn);
 408         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 409         xcb_create_window(c->conn,
 410                           XCB_COPY_FROM_PARENT,
 411                           output->window,
 412                           iter.data->root,
 413                           0, 0,
 414                           width, height,
 415                           0,
 416                           XCB_WINDOW_CLASS_INPUT_OUTPUT,
 417                           iter.data->root_visual,
 418                           mask, values);
 419
 420         /* Don't resize me. */
 421         memset(&normal_hints, 0, sizeof normal_hints);
 422         normal_hints.flags =
 423                 WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
 424         normal_hints.min_width = width;
 425         normal_hints.min_height = height;
 426         normal_hints.max_width = width;
 427         normal_hints.max_height = height;
 428         xcb_change_property (c->conn, XCB_PROP_MODE_REPLACE, output->window,
 429                              c->atom.wm_normal_hints,
 430                              c->atom.wm_size_hints, 32,
 431                              sizeof normal_hints / 4,
 432                              (uint8_t *) &normal_hints);
 433
 434         /* Set window name.  Don't bother with non-EWMH WMs. */
 435         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 436                             c->atom.net_wm_name, c->atom.utf8_string, 8,
 437                             strlen(name), name);
 438         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 439                             c->atom.wm_class, c->atom.string, 8,
 440                             sizeof class, class);
 441
 442         x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
 443
 444         xcb_map_window(c->conn, output->window);
 445
 446         x11_output_set_wm_protocols(output);
 447
 448         if (fullscreen)
 449                 x11_output_change_state(output, 1,
 450                                         c->atom.net_wm_state_fullscreen);
 451
 452         output->egl_surface =
 453                 eglCreateWindowSurface(c->base.display, c->base.config,
 454                                        output->window, NULL);
 455         if (!output->egl_surface) {
 456                 fprintf(stderr, "failed to create window surface\n");
 457                 return -1;
 458         }
 459         if (!eglMakeCurrent(c->base.display, output->egl_surface,
 460                             output->egl_surface, c->base.context)) {
 461                 fprintf(stderr, "failed to make surface current\n");
 462                 return -1;
 463         }
 464
 465         loop = wl_display_get_event_loop(c->base.wl_display);
 466         output->finish_frame_timer =
 467                 wl_event_loop_add_timer(loop, finish_frame_handler, output);
 468
 469         output->base.origin = output->base.current;
 470         output->base.repaint = x11_output_repaint;
 471         output->base.destroy = x11_output_destroy;
 472         output->base.assign_planes = NULL;
 473         output->base.read_pixels = x11_output_read_pixels;
 474         output->base.set_backlight = NULL;
 475         output->base.set_dpms = NULL;
 476         output->base.switch_mode = NULL;
 477
 478         wl_list_insert(c->base.output_list.prev, &output->base.link);
 479
 480         return 0;
 481 }
 482
 483 static struct x11_output *
 484 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 485 {
 486         struct x11_output *output;
 487
 488         wl_list_for_each(output, &c->base.output_list, base.link) {
 489                 if (output->window == window)
 490                         return output;
 491         }
 492
 493         return NULL;
 494 }
 495
 496 static void
 497 x11_compositor_deliver_button_event(struct x11_compositor *c,
 498                                     xcb_generic_event_t *event, int state)
 499 {
 500         xcb_button_press_event_t *button_event =
 501                 (xcb_button_press_event_t *) event;
 502         int button;
 503
 504         switch (button_event->detail) {
 505         default:
 506                 button = button_event->detail + BTN_LEFT - 1;
 507                 break;
 508         case 2:
 509                 button = BTN_MIDDLE;
 510                 break;
 511         case 3:
 512                 button = BTN_RIGHT;
 513                 break;
 514         case 4:
 515                 if (state)
 516                         notify_axis(c->base.input_device,
 517                                       weston_compositor_get_time(),
 518                                       WL_INPUT_DEVICE_AXIS_VERTICAL_SCROLL, 1);
 519                 return;
 520         case 5:
 521                 if (state)
 522                         notify_axis(c->base.input_device,
 523                                       weston_compositor_get_time(),
 524                                       WL_INPUT_DEVICE_AXIS_VERTICAL_SCROLL, -1);
 525                 return;
 526         case 6:
 527                 if (state)
 528                         notify_axis(c->base.input_device,
 529                                       weston_compositor_get_time(),
 530                                       WL_INPUT_DEVICE_AXIS_HORIZONTAL_SCROLL, 1);
 531                 return;
 532         case 7:
 533                 if (state)
 534                         notify_axis(c->base.input_device,
 535                                       weston_compositor_get_time(),
 536                                       WL_INPUT_DEVICE_AXIS_HORIZONTAL_SCROLL, -1);
 537                 return;
 538         }
 539
 540         notify_button(c->base.input_device,
 541                       weston_compositor_get_time(), button, state);
 542 }
 543
 544 static int
 545 x11_compositor_next_event(struct x11_compositor *c,
 546                           xcb_generic_event_t **event, uint32_t mask)
 547 {
 548         if (mask & WL_EVENT_READABLE) {
 549                 *event = xcb_poll_for_event(c->conn);
 550         } else {
 551 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
 552                 *event = xcb_poll_for_queued_event(c->conn);
 553 #else
 554                 *event = xcb_poll_for_event(c->conn);
 555 #endif
 556         }
 557
 558         return *event != NULL;
 559 }
 560
 561 static int
 562 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
 563 {
 564         struct x11_compositor *c = data;
 565         struct x11_output *output;
 566         xcb_generic_event_t *event, *prev;
 567         xcb_client_message_event_t *client_message;
 568         xcb_motion_notify_event_t *motion_notify;
 569         xcb_enter_notify_event_t *enter_notify;
 570         xcb_key_press_event_t *key_press, *key_release;
 571         xcb_keymap_notify_event_t *keymap_notify;
 572         xcb_focus_in_event_t *focus_in;
 573         xcb_atom_t atom;
 574         uint32_t *k;
 575         uint32_t i, set;
 576
 577         prev = NULL;
 578         while (x11_compositor_next_event(c, &event, mask)) {
 579                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
 580                 case XCB_KEY_RELEASE:
 581                         key_release = (xcb_key_press_event_t *) prev;
 582                         key_press = (xcb_key_press_event_t *) event;
 583                         if ((event->response_type & ~0x80) == XCB_KEY_PRESS &&
 584                             key_release->time == key_press->time &&
 585                             key_release->detail == key_press->detail) {
 586                                 /* Don't deliver the held key release
 587                                  * event or the new key press event. */
 588                                 free(event);
 589                                 free(prev);
 590                                 prev = NULL;
 591                                 continue;
 592                         } else {
 593                                 /* Deliver the held key release now
 594                                  * and fall through and handle the new
 595                                  * event below. */
 596                                 notify_key(c->base.input_device,
 597                                            weston_compositor_get_time(),
 598                                            key_release->detail - 8, 0);
 599                                 free(prev);
 600                                 prev = NULL;
 601                                 break;
 602                         }
 603
 604                 case XCB_FOCUS_IN:
 605                         /* assert event is keymap_notify */
 606                         focus_in = (xcb_focus_in_event_t *) prev;
 607                         keymap_notify = (xcb_keymap_notify_event_t *) event;
 608                         c->keys.size = 0;
 609                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
 610                                 set = keymap_notify->keys[i >> 3] &
 611                                         (1 << (i & 7));
 612                                 if (set) {
 613                                         k = wl_array_add(&c->keys, sizeof *k);
 614                                         *k = i;
 615                                 }
 616                         }
 617
 618                         output = x11_compositor_find_output(c, focus_in->event);
 619                         notify_keyboard_focus(c->base.input_device, &c->keys);
 620
 621                         free(prev);
 622                         prev = NULL;
 623                         break;
 624
 625                 default:
 626                         /* No previous event held */
 627                         break;
 628                 }
 629
 630                 switch (event->response_type & ~0x80) {
 631                 case XCB_KEY_PRESS:
 632                         key_press = (xcb_key_press_event_t *) event;
 633                         notify_key(c->base.input_device,
 634                                    weston_compositor_get_time(),
 635                                    key_press->detail - 8, 1);
 636                         break;
 637                 case XCB_KEY_RELEASE:
 638                         prev = event;
 639                         break;
 640                 case XCB_BUTTON_PRESS:
 641                         x11_compositor_deliver_button_event(c, event, 1);
 642                         break;
 643                 case XCB_BUTTON_RELEASE:
 644                         x11_compositor_deliver_button_event(c, event, 0);
 645                         break;
 646                 case XCB_MOTION_NOTIFY:
 647                         motion_notify = (xcb_motion_notify_event_t *) event;
 648                         output = x11_compositor_find_output(c, motion_notify->event);
 649                         notify_motion(c->base.input_device,
 650                                       weston_compositor_get_time(),
 651                                       output->base.x + motion_notify->event_x,
 652                                       output->base.y + motion_notify->event_y);
 653                         break;
 654
 655                 case XCB_EXPOSE:
 656                         /* FIXME: schedule output repaint */
 657                         /* output = x11_compositor_find_output(c, expose->window); */
 658
 659                         weston_compositor_schedule_repaint(&c->base);
 660                         break;
 661
 662                 case XCB_ENTER_NOTIFY:
 663                         enter_notify = (xcb_enter_notify_event_t *) event;
 664                         if (enter_notify->state >= Button1Mask)
 665                                 break;
 666                         output = x11_compositor_find_output(c, enter_notify->event);
 667                         notify_pointer_focus(c->base.input_device,
 668                                              &output->base,
 669                                              output->base.x + enter_notify->event_x,
 670                                              output->base.y + enter_notify->event_y);
 671                         break;
 672
 673                 case XCB_LEAVE_NOTIFY:
 674                         enter_notify = (xcb_enter_notify_event_t *) event;
 675                         if (enter_notify->state >= Button1Mask)
 676                                 break;
 677                         output = x11_compositor_find_output(c, enter_notify->event);
 678                         notify_pointer_focus(c->base.input_device, NULL,
 679                                              output->base.x + enter_notify->event_x,
 680                                              output->base.y + enter_notify->event_y);
 681                         break;
 682
 683                 case XCB_CLIENT_MESSAGE:
 684                         client_message = (xcb_client_message_event_t *) event;
 685                         atom = client_message->data.data32[0];
 686                         if (atom == c->atom.wm_delete_window)
 687                                 wl_display_terminate(c->base.wl_display);
 688                         break;
 689
 690                 case XCB_FOCUS_IN:
 691                         focus_in = (xcb_focus_in_event_t *) event;
 692                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
 693                                 break;
 694
 695                         prev = event;
 696                         break;
 697
 698                 case XCB_FOCUS_OUT:
 699                         focus_in = (xcb_focus_in_event_t *) event;
 700                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
 701                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
 702                                 break;
 703                         notify_keyboard_focus(c->base.input_device, NULL);
 704                         break;
 705
 706                 default:
 707                         break;
 708                 }
 709
 710                 if (prev != event)
 711                         free (event);
 712         }
 713
 714         switch (prev ? prev->response_type & ~0x80 : 0x80) {
 715         case XCB_KEY_RELEASE:
 716                 key_release = (xcb_key_press_event_t *) prev;
 717                 notify_key(c->base.input_device,
 718                            weston_compositor_get_time(),
 719                            key_release->detail - 8, 0);
 720                 free(prev);
 721                 prev = NULL;
 722                 break;
 723         default:
 724                 break;
 725         }
 726
 727         return event != NULL;
 728 }
 729
 730 #define F(field) offsetof(struct x11_compositor, field)
 731
 732 static void
 733 x11_compositor_get_resources(struct x11_compositor *c)
 734 {
 735         static const struct { const char *name; int offset; } atoms[] = {
 736                 { "WM_PROTOCOLS",       F(atom.wm_protocols) },
 737                 { "WM_NORMAL_HINTS",    F(atom.wm_normal_hints) },
 738                 { "WM_SIZE_HINTS",      F(atom.wm_size_hints) },
 739                 { "WM_DELETE_WINDOW",   F(atom.wm_delete_window) },
 740                 { "WM_CLASS",           F(atom.wm_class) },
 741                 { "_NET_WM_NAME",       F(atom.net_wm_name) },
 742                 { "_NET_WM_ICON",       F(atom.net_wm_icon) },
 743                 { "_NET_WM_STATE",      F(atom.net_wm_state) },
 744                 { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
 745                 { "STRING",             F(atom.string) },
 746                 { "UTF8_STRING",        F(atom.utf8_string) },
 747                 { "CARDINAL",           F(atom.cardinal) },
 748         };
 749
 750         xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
 751         xcb_intern_atom_reply_t *reply;
 752         xcb_pixmap_t pixmap;
 753         xcb_gc_t gc;
 754         unsigned int i;
 755         uint8_t data[] = { 0, 0, 0, 0 };
 756
 757         for (i = 0; i < ARRAY_LENGTH(atoms); i++)
 758                 cookies[i] = xcb_intern_atom (c->conn, 0,
 759                                               strlen(atoms[i].name),
 760                                               atoms[i].name);
 761
 762         for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
 763                 reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
 764                 *(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
 765                 free(reply);
 766         }
 767
 768         pixmap = xcb_generate_id(c->conn);
 769         gc = xcb_generate_id(c->conn);
 770         xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
 771         xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
 772         xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
 773                       pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
 774         c->null_cursor = xcb_generate_id(c->conn);
 775         xcb_create_cursor (c->conn, c->null_cursor,
 776                            pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
 777         xcb_free_gc(c->conn, gc);
 778         xcb_free_pixmap(c->conn, pixmap);
 779 }
 780
 781 static void
 782 x11_destroy(struct weston_compositor *ec)
 783 {
 784         struct x11_compositor *compositor = (struct x11_compositor *)ec;
 785
 786         wl_event_source_remove(compositor->xcb_source);
 787         x11_input_destroy(compositor);
 788
 789         weston_compositor_shutdown(ec); /* destroys outputs, too */
 790
 791         x11_compositor_fini_egl(compositor);
 792
 793         XCloseDisplay(compositor->dpy);
 794         free(ec);
 795 }
 796
 797 static struct weston_compositor *
 798 x11_compositor_create(struct wl_display *display,
 799                       int width, int height, int count, int fullscreen)
 800 {
 801         struct x11_compositor *c;
 802         xcb_screen_iterator_t s;
 803         int i, x;
 804
 805         c = malloc(sizeof *c);
 806         if (c == NULL)
 807                 return NULL;
 808
 809         memset(c, 0, sizeof *c);
 810
 811         c->dpy = XOpenDisplay(NULL);
 812         if (c->dpy == NULL)
 813                 return NULL;
 814
 815         c->conn = XGetXCBConnection(c->dpy);
 816         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
 817
 818         if (xcb_connection_has_error(c->conn))
 819                 return NULL;
 820
 821         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 822         c->screen = s.data;
 823         wl_array_init(&c->keys);
 824
 825         x11_compositor_get_resources(c);
 826
 827         c->base.wl_display = display;
 828         if (x11_compositor_init_egl(c) < 0)
 829                 return NULL;
 830
 831         c->base.destroy = x11_destroy;
 832
 833         /* Can't init base class until we have a current egl context */
 834         if (weston_compositor_init(&c->base, display) < 0)
 835                 return NULL;
 836
 837         for (i = 0, x = 0; i < count; i++) {
 838                 if (x11_compositor_create_output(c, x, 0, width, height,
 839                                                  fullscreen) < 0)
 840                         return NULL;
 841                 x += width;
 842         }
 843
 844         if (x11_input_create(c) < 0)
 845                 return NULL;
 846
 847         c->xcb_source =
 848                 wl_event_loop_add_fd(c->base.input_loop,
 849                                      xcb_get_file_descriptor(c->conn),
 850                                      WL_EVENT_READABLE,
 851                                      x11_compositor_handle_event, c);
 852         wl_event_source_check(c->xcb_source);
 853
 854         return &c->base;
 855 }
 856
 857 WL_EXPORT struct weston_compositor *
 858 backend_init(struct wl_display *display, int argc, char *argv[])
 859 {
 860         int width = 1024, height = 640, fullscreen = 0, count = 1;
 861
 862         const struct weston_option x11_options[] = {
 863                 { WESTON_OPTION_INTEGER, "width", 0, &width },
 864                 { WESTON_OPTION_INTEGER, "height", 0, &height },
 865                 { WESTON_OPTION_BOOLEAN, "fullscreen", 0, &fullscreen },
 866                 { WESTON_OPTION_INTEGER, "output-count", 0, &count },
 867         };
 868
 869         parse_options(x11_options, ARRAY_LENGTH(x11_options), argc, argv);
 870
 871         return x11_compositor_create(display,
 872                                      width, height, count, fullscreen);
 873 }