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 <stdlib.h>
  30 #include <string.h>
  31 #include <fcntl.h>
  32 #include <unistd.h>
  33 #include <errno.h>
  34 #include <sys/time.h>
  35 #include <linux/input.h>
  36
  37 #include <xcb/xcb.h>
  38 #include <X11/Xlib.h>
  39 #include <X11/Xlib-xcb.h>
  40
  41 #include <xkbcommon/xkbcommon.h>
  42
  43 #include <GLES2/gl2.h>
  44 #include <EGL/egl.h>
  45
  46 #include "compositor.h"
  47 #include "../shared/config-parser.h"
  48 #include "log.h"
  49
  50 struct x11_compositor {
  51         struct weston_compositor         base;
  52
  53         EGLSurface               dummy_pbuffer;
  54
  55         Display                 *dpy;
  56         xcb_connection_t        *conn;
  57         xcb_screen_t            *screen;
  58         xcb_cursor_t             null_cursor;
  59         struct wl_array          keys;
  60         struct wl_event_source  *xcb_source;
  61         struct xkb_keymap       *xkb_keymap;
  62         struct {
  63                 xcb_atom_t               wm_protocols;
  64                 xcb_atom_t               wm_normal_hints;
  65                 xcb_atom_t               wm_size_hints;
  66                 xcb_atom_t               wm_delete_window;
  67                 xcb_atom_t               wm_class;
  68                 xcb_atom_t               net_wm_name;
  69                 xcb_atom_t               net_wm_icon;
  70                 xcb_atom_t               net_wm_state;
  71                 xcb_atom_t               net_wm_state_fullscreen;
  72                 xcb_atom_t               string;
  73                 xcb_atom_t               utf8_string;
  74                 xcb_atom_t               cardinal;
  75                 xcb_atom_t               xkb_names;
  76         } atom;
  77 };
  78
  79 struct x11_output {
  80         struct weston_output    base;
  81
  82         xcb_window_t            window;
  83         EGLSurface              egl_surface;
  84         struct weston_mode      mode;
  85         struct wl_event_source *finish_frame_timer;
  86 };
  87
  88 struct x11_input {
  89         struct weston_seat base;
  90 };
  91
  92 static struct xkb_keymap *
  93 x11_compositor_get_keymap(struct x11_compositor *c)
  94 {
  95         xcb_get_property_cookie_t cookie;
  96         xcb_get_property_reply_t *reply;
  97         xcb_generic_error_t *error;
  98         struct xkb_rule_names names;
  99         struct xkb_keymap *ret;
 100         const char *value_all, *value_part;
 101         int length_all, length_part;
 102
 103         memset(&names, 0, sizeof(names));
 104
 105         cookie = xcb_get_property(c->conn, 0, c->screen->root,
 106                                   c->atom.xkb_names, c->atom.string, 0, 1024);
 107         reply = xcb_get_property_reply(c->conn, cookie, &error);
 108         if (reply == NULL)
 109                 return NULL;
 110
 111         value_all = xcb_get_property_value(reply);
 112         length_all = xcb_get_property_value_length(reply);
 113         value_part = value_all;
 114
 115 #define copy_prop_value(to) \
 116         length_part = strlen(value_part); \
 117         if (value_part + length_part < (value_all + length_all) && \
 118             length_part > 0) \
 119                 names.to = value_part; \
 120         value_part += length_part + 1;
 121
 122         copy_prop_value(rules);
 123         copy_prop_value(model);
 124         copy_prop_value(layout);
 125         copy_prop_value(variant);
 126         copy_prop_value(options);
 127 #undef copy_prop_value
 128
 129         ret = xkb_map_new_from_names(c->base.xkb_context, &names, 0);
 130
 131         free(reply);
 132         return ret;
 133 }
 134
 135 static int
 136 x11_input_create(struct x11_compositor *c, int no_input)
 137 {
 138         struct x11_input *input;
 139         struct xkb_keymap *keymap;
 140
 141         input = malloc(sizeof *input);
 142         if (input == NULL)
 143                 return -1;
 144
 145         memset(input, 0, sizeof *input);
 146         weston_seat_init(&input->base, &c->base);
 147         c->base.seat = &input->base;
 148
 149         if (no_input)
 150                 return 0;
 151
 152         weston_seat_init_pointer(&input->base);
 153
 154         keymap = x11_compositor_get_keymap(c);
 155         weston_seat_init_keyboard(&input->base, keymap);
 156         if (keymap)
 157                 xkb_map_unref(keymap);
 158
 159         return 0;
 160 }
 161
 162 static void
 163 x11_input_destroy(struct x11_compositor *compositor)
 164 {
 165         struct x11_input *input = container_of(compositor->base.seat,
 166                                                struct x11_input,
 167                                                base);
 168
 169         weston_seat_release(&input->base);
 170         free(input);
 171 }
 172
 173 static int
 174 x11_compositor_init_egl(struct x11_compositor *c)
 175 {
 176         EGLint major, minor;
 177         EGLint n;
 178         EGLint config_attribs[] = {
 179                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 180                 EGL_RED_SIZE, 1,
 181                 EGL_GREEN_SIZE, 1,
 182                 EGL_BLUE_SIZE, 1,
 183                 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
 184                 EGL_NONE
 185         };
 186         static const EGLint context_attribs[] = {
 187                 EGL_CONTEXT_CLIENT_VERSION, 2,
 188                 EGL_NONE
 189         };
 190
 191         static const EGLint pbuffer_attribs[] = {
 192                 EGL_WIDTH, 10,
 193                 EGL_HEIGHT, 10,
 194                 EGL_NONE
 195         };
 196
 197         c->base.display = eglGetDisplay(c->dpy);
 198         if (c->base.display == NULL) {
 199                 weston_log("failed to create display\n");
 200                 return -1;
 201         }
 202
 203         if (!eglInitialize(c->base.display, &major, &minor)) {
 204                 weston_log("failed to initialize display\n");
 205                 return -1;
 206         }
 207
 208         if (!eglBindAPI(EGL_OPENGL_ES_API)) {
 209                 weston_log("failed to bind EGL_OPENGL_ES_API\n");
 210                 return -1;
 211         }
 212         if (!eglChooseConfig(c->base.display, config_attribs,
 213                              &c->base.config, 1, &n) || n == 0) {
 214                 weston_log("failed to choose config: %d\n", n);
 215                 return -1;
 216         }
 217
 218         c->base.context = eglCreateContext(c->base.display, c->base.config,
 219                                            EGL_NO_CONTEXT, context_attribs);
 220         if (c->base.context == NULL) {
 221                 weston_log("failed to create context\n");
 222                 return -1;
 223         }
 224
 225         c->dummy_pbuffer = eglCreatePbufferSurface(c->base.display,
 226                                                    c->base.config,
 227                                                    pbuffer_attribs);
 228         if (c->dummy_pbuffer == NULL) {
 229                 weston_log("failed to create dummy pbuffer\n");
 230                 return -1;
 231         }
 232
 233         if (!eglMakeCurrent(c->base.display, c->dummy_pbuffer,
 234                             c->dummy_pbuffer, c->base.context)) {
 235                 weston_log("failed to make context current\n");
 236                 return -1;
 237         }
 238
 239         return 0;
 240 }
 241
 242 static void
 243 x11_compositor_fini_egl(struct x11_compositor *compositor)
 244 {
 245         eglMakeCurrent(compositor->base.display,
 246                        EGL_NO_SURFACE, EGL_NO_SURFACE,
 247                        EGL_NO_CONTEXT);
 248
 249         eglTerminate(compositor->base.display);
 250         eglReleaseThread();
 251 }
 252
 253 static void
 254 x11_output_repaint(struct weston_output *output_base,
 255                    pixman_region32_t *damage)
 256 {
 257         struct x11_output *output = (struct x11_output *)output_base;
 258         struct x11_compositor *compositor =
 259                 (struct x11_compositor *)output->base.compositor;
 260         struct weston_surface *surface;
 261
 262         if (!eglMakeCurrent(compositor->base.display, output->egl_surface,
 263                             output->egl_surface, compositor->base.context)) {
 264                 weston_log("failed to make current\n");
 265                 return;
 266         }
 267
 268         wl_list_for_each_reverse(surface, &compositor->base.surface_list, link)
 269                 weston_surface_draw(surface, &output->base, damage);
 270
 271         weston_output_do_read_pixels(&output->base);
 272
 273         eglSwapBuffers(compositor->base.display, output->egl_surface);
 274
 275         wl_event_source_timer_update(output->finish_frame_timer, 10);
 276 }
 277
 278 static int
 279 finish_frame_handler(void *data)
 280 {
 281         struct x11_output *output = data;
 282         uint32_t msec;
 283         struct timeval tv;
 284
 285         gettimeofday(&tv, NULL);
 286         msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
 287         weston_output_finish_frame(&output->base, msec);
 288
 289         return 1;
 290 }
 291
 292 static void
 293 x11_output_destroy(struct weston_output *output_base)
 294 {
 295         struct x11_output *output = (struct x11_output *)output_base;
 296         struct x11_compositor *compositor =
 297                 (struct x11_compositor *)output->base.compositor;
 298
 299         wl_list_remove(&output->base.link);
 300         wl_event_source_remove(output->finish_frame_timer);
 301
 302         eglDestroySurface(compositor->base.display, output->egl_surface);
 303
 304         xcb_destroy_window(compositor->conn, output->window);
 305
 306         weston_output_destroy(&output->base);
 307
 308         free(output);
 309 }
 310
 311 static void
 312 x11_output_set_wm_protocols(struct x11_output *output)
 313 {
 314         xcb_atom_t list[1];
 315         struct x11_compositor *c =
 316                 (struct x11_compositor *) output->base.compositor;
 317
 318         list[0] = c->atom.wm_delete_window;
 319         xcb_change_property (c->conn,
 320                              XCB_PROP_MODE_REPLACE,
 321                              output->window,
 322                              c->atom.wm_protocols,
 323                              XCB_ATOM_ATOM,
 324                              32,
 325                              ARRAY_LENGTH(list),
 326                              list);
 327 }
 328
 329 static void
 330 x11_output_change_state(struct x11_output *output, int add, xcb_atom_t state)
 331 {
 332         xcb_client_message_event_t event;
 333         struct x11_compositor *c =
 334                 (struct x11_compositor *) output->base.compositor;
 335         xcb_screen_iterator_t iter;
 336
 337 #define _NET_WM_STATE_REMOVE        0    /* remove/unset property */
 338 #define _NET_WM_STATE_ADD           1    /* add/set property */
 339 #define _NET_WM_STATE_TOGGLE        2    /* toggle property  */
 340
 341         memset(&event, 0, sizeof event);
 342         event.response_type = XCB_CLIENT_MESSAGE;
 343         event.format = 32;
 344         event.window = output->window;
 345         event.type = c->atom.net_wm_state;
 346
 347         event.data.data32[0] = add ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
 348         event.data.data32[1] = state;
 349         event.data.data32[2] = 0;
 350         event.data.data32[3] = 0;
 351         event.data.data32[4] = 0;
 352
 353         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 354         xcb_send_event(c->conn, 0, iter.data->root,
 355                        XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
 356                        XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT,
 357                        (void *) &event);
 358 }
 359
 360
 361 struct wm_normal_hints {
 362         uint32_t flags;
 363         uint32_t pad[4];
 364         int32_t min_width, min_height;
 365         int32_t max_width, max_height;
 366         int32_t width_inc, height_inc;
 367         int32_t min_aspect_x, min_aspect_y;
 368         int32_t max_aspect_x, max_aspect_y;
 369         int32_t base_width, base_height;
 370         int32_t win_gravity;
 371 };
 372
 373 #define WM_NORMAL_HINTS_MIN_SIZE        16
 374 #define WM_NORMAL_HINTS_MAX_SIZE        32
 375
 376 static void
 377 x11_output_set_icon(struct x11_compositor *c,
 378                     struct x11_output *output, const char *filename)
 379 {
 380         uint32_t *icon;
 381         int32_t width, height;
 382         pixman_image_t *image;
 383
 384         image = load_image(filename);
 385         if (!image)
 386                 return;
 387         width = pixman_image_get_width(image);
 388         height = pixman_image_get_height(image);
 389         icon = malloc(width * height * 4 + 8);
 390         if (!icon) {
 391                 pixman_image_unref(image);
 392                 return;
 393         }
 394
 395         icon[0] = width;
 396         icon[1] = height;
 397         memcpy(icon + 2, pixman_image_get_data(image), width * height * 4);
 398         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 399                             c->atom.net_wm_icon, c->atom.cardinal, 32,
 400                             width * height + 2, icon);
 401         free(icon);
 402         pixman_image_unref(image);
 403 }
 404
 405 static int
 406 x11_compositor_create_output(struct x11_compositor *c, int x, int y,
 407                              int width, int height, int fullscreen,
 408                              int no_input)
 409 {
 410         static const char name[] = "Weston Compositor";
 411         static const char class[] = "weston-1\0Weston Compositor";
 412         struct x11_output *output;
 413         xcb_screen_iterator_t iter;
 414         struct wm_normal_hints normal_hints;
 415         struct wl_event_loop *loop;
 416         uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
 417         uint32_t values[2] = {
 418                 XCB_EVENT_MASK_EXPOSURE |
 419                 XCB_EVENT_MASK_STRUCTURE_NOTIFY,
 420                 0
 421         };
 422
 423         if (!no_input)
 424                 values[0] |=
 425                         XCB_EVENT_MASK_KEY_PRESS |
 426                         XCB_EVENT_MASK_KEY_RELEASE |
 427                         XCB_EVENT_MASK_BUTTON_PRESS |
 428                         XCB_EVENT_MASK_BUTTON_RELEASE |
 429                         XCB_EVENT_MASK_POINTER_MOTION |
 430                         XCB_EVENT_MASK_ENTER_WINDOW |
 431                         XCB_EVENT_MASK_LEAVE_WINDOW |
 432                         XCB_EVENT_MASK_KEYMAP_STATE |
 433                         XCB_EVENT_MASK_FOCUS_CHANGE;
 434
 435         output = malloc(sizeof *output);
 436         if (output == NULL)
 437                 return -1;
 438
 439         memset(output, 0, sizeof *output);
 440
 441         output->mode.flags =
 442                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 443         output->mode.width = width;
 444         output->mode.height = height;
 445         output->mode.refresh = 60000;
 446         wl_list_init(&output->base.mode_list);
 447         wl_list_insert(&output->base.mode_list, &output->mode.link);
 448
 449         output->base.current = &output->mode;
 450         weston_output_init(&output->base, &c->base, x, y, width, height,
 451                          WL_OUTPUT_FLIPPED);
 452
 453         values[1] = c->null_cursor;
 454         output->window = xcb_generate_id(c->conn);
 455         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 456         xcb_create_window(c->conn,
 457                           XCB_COPY_FROM_PARENT,
 458                           output->window,
 459                           iter.data->root,
 460                           0, 0,
 461                           width, height,
 462                           0,
 463                           XCB_WINDOW_CLASS_INPUT_OUTPUT,
 464                           iter.data->root_visual,
 465                           mask, values);
 466
 467         /* Don't resize me. */
 468         memset(&normal_hints, 0, sizeof normal_hints);
 469         normal_hints.flags =
 470                 WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
 471         normal_hints.min_width = width;
 472         normal_hints.min_height = height;
 473         normal_hints.max_width = width;
 474         normal_hints.max_height = height;
 475         xcb_change_property (c->conn, XCB_PROP_MODE_REPLACE, output->window,
 476                              c->atom.wm_normal_hints,
 477                              c->atom.wm_size_hints, 32,
 478                              sizeof normal_hints / 4,
 479                              (uint8_t *) &normal_hints);
 480
 481         /* Set window name.  Don't bother with non-EWMH WMs. */
 482         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 483                             c->atom.net_wm_name, c->atom.utf8_string, 8,
 484                             strlen(name), name);
 485         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 486                             c->atom.wm_class, c->atom.string, 8,
 487                             sizeof class, class);
 488
 489         x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
 490
 491         xcb_map_window(c->conn, output->window);
 492
 493         x11_output_set_wm_protocols(output);
 494
 495         if (fullscreen)
 496                 x11_output_change_state(output, 1,
 497                                         c->atom.net_wm_state_fullscreen);
 498
 499         output->egl_surface =
 500                 eglCreateWindowSurface(c->base.display, c->base.config,
 501                                        output->window, NULL);
 502         if (!output->egl_surface) {
 503                 weston_log("failed to create window surface\n");
 504                 return -1;
 505         }
 506         if (!eglMakeCurrent(c->base.display, output->egl_surface,
 507                             output->egl_surface, c->base.context)) {
 508                 weston_log("failed to make surface current\n");
 509                 return -1;
 510         }
 511
 512         loop = wl_display_get_event_loop(c->base.wl_display);
 513         output->finish_frame_timer =
 514                 wl_event_loop_add_timer(loop, finish_frame_handler, output);
 515
 516         output->base.origin = output->base.current;
 517         output->base.repaint = x11_output_repaint;
 518         output->base.destroy = x11_output_destroy;
 519         output->base.assign_planes = NULL;
 520         output->base.set_backlight = NULL;
 521         output->base.set_dpms = NULL;
 522         output->base.switch_mode = NULL;
 523
 524         wl_list_insert(c->base.output_list.prev, &output->base.link);
 525
 526         return 0;
 527 }
 528
 529 static struct x11_output *
 530 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 531 {
 532         struct x11_output *output;
 533
 534         wl_list_for_each(output, &c->base.output_list, base.link) {
 535                 if (output->window == window)
 536                         return output;
 537         }
 538
 539         return NULL;
 540 }
 541
 542 static void
 543 x11_compositor_deliver_button_event(struct x11_compositor *c,
 544                                     xcb_generic_event_t *event, int state)
 545 {
 546         xcb_button_press_event_t *button_event =
 547                 (xcb_button_press_event_t *) event;
 548         uint32_t button;
 549
 550         switch (button_event->detail) {
 551         default:
 552                 button = button_event->detail + BTN_LEFT - 1;
 553                 break;
 554         case 2:
 555                 button = BTN_MIDDLE;
 556                 break;
 557         case 3:
 558                 button = BTN_RIGHT;
 559                 break;
 560         case 4:
 561                 if (state)
 562                         notify_axis(&c->base.seat->seat,
 563                                       weston_compositor_get_time(),
 564                                       WL_POINTER_AXIS_VERTICAL_SCROLL,
 565                                       wl_fixed_from_int(1));
 566                 return;
 567         case 5:
 568                 if (state)
 569                         notify_axis(&c->base.seat->seat,
 570                                       weston_compositor_get_time(),
 571                                       WL_POINTER_AXIS_VERTICAL_SCROLL,
 572                                       wl_fixed_from_int(-1));
 573                 return;
 574         case 6:
 575                 if (state)
 576                         notify_axis(&c->base.seat->seat,
 577                                       weston_compositor_get_time(),
 578                                       WL_POINTER_AXIS_HORIZONTAL_SCROLL,
 579                                       wl_fixed_from_int(1));
 580                 return;
 581         case 7:
 582                 if (state)
 583                         notify_axis(&c->base.seat->seat,
 584                                       weston_compositor_get_time(),
 585                                       WL_POINTER_AXIS_HORIZONTAL_SCROLL,
 586                                       wl_fixed_from_int(-1));
 587                 return;
 588         }
 589
 590         notify_button(&c->base.seat->seat,
 591                       weston_compositor_get_time(), button,
 592                       state ? WL_POINTER_BUTTON_STATE_PRESSED :
 593                               WL_POINTER_BUTTON_STATE_RELEASED);
 594 }
 595
 596 static int
 597 x11_compositor_next_event(struct x11_compositor *c,
 598                           xcb_generic_event_t **event, uint32_t mask)
 599 {
 600         if (mask & WL_EVENT_READABLE) {
 601                 *event = xcb_poll_for_event(c->conn);
 602         } else {
 603 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
 604                 *event = xcb_poll_for_queued_event(c->conn);
 605 #else
 606                 *event = xcb_poll_for_event(c->conn);
 607 #endif
 608         }
 609
 610         return *event != NULL;
 611 }
 612
 613 static int
 614 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
 615 {
 616         struct x11_compositor *c = data;
 617         struct x11_output *output;
 618         xcb_generic_event_t *event, *prev;
 619         xcb_client_message_event_t *client_message;
 620         xcb_motion_notify_event_t *motion_notify;
 621         xcb_enter_notify_event_t *enter_notify;
 622         xcb_key_press_event_t *key_press, *key_release;
 623         xcb_keymap_notify_event_t *keymap_notify;
 624         xcb_focus_in_event_t *focus_in;
 625         xcb_atom_t atom;
 626         uint32_t *k;
 627         uint32_t i, set;
 628         wl_fixed_t x, y;
 629         int count;
 630
 631         prev = NULL;
 632         count = 0;
 633         while (x11_compositor_next_event(c, &event, mask)) {
 634                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
 635                 case XCB_KEY_RELEASE:
 636                         key_release = (xcb_key_press_event_t *) prev;
 637                         key_press = (xcb_key_press_event_t *) event;
 638                         /* XXX use XkbSetDetectableAutoRepeat */
 639                         if ((event->response_type & ~0x80) == XCB_KEY_PRESS &&
 640                             key_release->time == key_press->time &&
 641                             key_release->detail == key_press->detail) {
 642                                 /* Don't deliver the held key release
 643                                  * event or the new key press event. */
 644                                 free(event);
 645                                 free(prev);
 646                                 prev = NULL;
 647                                 continue;
 648                         } else {
 649                                 /* Deliver the held key release now
 650                                  * and fall through and handle the new
 651                                  * event below. */
 652                                 notify_key(&c->base.seat->seat,
 653                                            weston_compositor_get_time(),
 654                                            key_release->detail - 8,
 655                                            WL_KEYBOARD_KEY_STATE_RELEASED);
 656                                 free(prev);
 657                                 prev = NULL;
 658                                 break;
 659                         }
 660
 661                 case XCB_FOCUS_IN:
 662                         /* assert event is keymap_notify */
 663                         focus_in = (xcb_focus_in_event_t *) prev;
 664                         keymap_notify = (xcb_keymap_notify_event_t *) event;
 665                         c->keys.size = 0;
 666                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
 667                                 set = keymap_notify->keys[i >> 3] &
 668                                         (1 << (i & 7));
 669                                 if (set) {
 670                                         k = wl_array_add(&c->keys, sizeof *k);
 671                                         *k = i;
 672                                 }
 673                         }
 674
 675                         output = x11_compositor_find_output(c, focus_in->event);
 676                         notify_keyboard_focus(&c->base.seat->seat, &c->keys);
 677
 678                         free(prev);
 679                         prev = NULL;
 680                         break;
 681
 682                 default:
 683                         /* No previous event held */
 684                         break;
 685                 }
 686
 687                 switch (event->response_type & ~0x80) {
 688                 case XCB_KEY_PRESS:
 689                         key_press = (xcb_key_press_event_t *) event;
 690                         notify_key(&c->base.seat->seat,
 691                                    weston_compositor_get_time(),
 692                                    key_press->detail - 8,
 693                                    WL_KEYBOARD_KEY_STATE_PRESSED);
 694                         break;
 695                 case XCB_KEY_RELEASE:
 696                         prev = event;
 697                         break;
 698                 case XCB_BUTTON_PRESS:
 699                         x11_compositor_deliver_button_event(c, event, 1);
 700                         break;
 701                 case XCB_BUTTON_RELEASE:
 702                         x11_compositor_deliver_button_event(c, event, 0);
 703                         break;
 704                 case XCB_MOTION_NOTIFY:
 705                         motion_notify = (xcb_motion_notify_event_t *) event;
 706                         output = x11_compositor_find_output(c, motion_notify->event);
 707                         x = wl_fixed_from_int(output->base.x + motion_notify->event_x);
 708                         y = wl_fixed_from_int(output->base.y + motion_notify->event_y);
 709                         notify_motion(&c->base.seat->seat,
 710                                       weston_compositor_get_time(), x, y);
 711                         break;
 712
 713                 case XCB_EXPOSE:
 714                         /* FIXME: schedule output repaint */
 715                         /* output = x11_compositor_find_output(c, expose->window); */
 716
 717                         weston_compositor_schedule_repaint(&c->base);
 718                         break;
 719
 720                 case XCB_ENTER_NOTIFY:
 721                         enter_notify = (xcb_enter_notify_event_t *) event;
 722                         if (enter_notify->state >= Button1Mask)
 723                                 break;
 724                         output = x11_compositor_find_output(c, enter_notify->event);
 725                         x = wl_fixed_from_int(output->base.x + enter_notify->event_x);
 726                         y = wl_fixed_from_int(output->base.y + enter_notify->event_y);
 727                         /* XXX notify_modifiers() */
 728
 729                         notify_pointer_focus(&c->base.seat->seat,
 730                                              &output->base, x, y);
 731                         break;
 732
 733                 case XCB_LEAVE_NOTIFY:
 734                         enter_notify = (xcb_enter_notify_event_t *) event;
 735                         if (enter_notify->state >= Button1Mask)
 736                                 break;
 737                         output = x11_compositor_find_output(c, enter_notify->event);
 738                         notify_pointer_focus(&c->base.seat->seat, NULL, 0, 0);
 739                         break;
 740
 741                 case XCB_CLIENT_MESSAGE:
 742                         client_message = (xcb_client_message_event_t *) event;
 743                         atom = client_message->data.data32[0];
 744                         if (atom == c->atom.wm_delete_window)
 745                                 wl_display_terminate(c->base.wl_display);
 746                         break;
 747
 748                 case XCB_FOCUS_IN:
 749                         focus_in = (xcb_focus_in_event_t *) event;
 750                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
 751                                 break;
 752
 753                         prev = event;
 754                         break;
 755
 756                 case XCB_FOCUS_OUT:
 757                         focus_in = (xcb_focus_in_event_t *) event;
 758                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
 759                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
 760                                 break;
 761                         notify_keyboard_focus(&c->base.seat->seat, NULL);
 762                         break;
 763
 764                 default:
 765                         break;
 766                 }
 767
 768                 count++;
 769                 if (prev != event)
 770                         free (event);
 771         }
 772
 773         switch (prev ? prev->response_type & ~0x80 : 0x80) {
 774         case XCB_KEY_RELEASE:
 775                 key_release = (xcb_key_press_event_t *) prev;
 776                 notify_key(&c->base.seat->seat,
 777                            weston_compositor_get_time(),
 778                            key_release->detail - 8,
 779                            WL_KEYBOARD_KEY_STATE_RELEASED);
 780                 free(prev);
 781                 prev = NULL;
 782                 break;
 783         default:
 784                 break;
 785         }
 786
 787         return count;
 788 }
 789
 790 #define F(field) offsetof(struct x11_compositor, field)
 791
 792 static void
 793 x11_compositor_get_resources(struct x11_compositor *c)
 794 {
 795         static const struct { const char *name; int offset; } atoms[] = {
 796                 { "WM_PROTOCOLS",       F(atom.wm_protocols) },
 797                 { "WM_NORMAL_HINTS",    F(atom.wm_normal_hints) },
 798                 { "WM_SIZE_HINTS",      F(atom.wm_size_hints) },
 799                 { "WM_DELETE_WINDOW",   F(atom.wm_delete_window) },
 800                 { "WM_CLASS",           F(atom.wm_class) },
 801                 { "_NET_WM_NAME",       F(atom.net_wm_name) },
 802                 { "_NET_WM_ICON",       F(atom.net_wm_icon) },
 803                 { "_NET_WM_STATE",      F(atom.net_wm_state) },
 804                 { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
 805                 { "STRING",             F(atom.string) },
 806                 { "UTF8_STRING",        F(atom.utf8_string) },
 807                 { "CARDINAL",           F(atom.cardinal) },
 808                 { "_XKB_RULES_NAMES",   F(atom.xkb_names) },
 809         };
 810
 811         xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
 812         xcb_intern_atom_reply_t *reply;
 813         xcb_pixmap_t pixmap;
 814         xcb_gc_t gc;
 815         unsigned int i;
 816         uint8_t data[] = { 0, 0, 0, 0 };
 817
 818         for (i = 0; i < ARRAY_LENGTH(atoms); i++)
 819                 cookies[i] = xcb_intern_atom (c->conn, 0,
 820                                               strlen(atoms[i].name),
 821                                               atoms[i].name);
 822
 823         for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
 824                 reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
 825                 *(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
 826                 free(reply);
 827         }
 828
 829         pixmap = xcb_generate_id(c->conn);
 830         gc = xcb_generate_id(c->conn);
 831         xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
 832         xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
 833         xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
 834                       pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
 835         c->null_cursor = xcb_generate_id(c->conn);
 836         xcb_create_cursor (c->conn, c->null_cursor,
 837                            pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
 838         xcb_free_gc(c->conn, gc);
 839         xcb_free_pixmap(c->conn, pixmap);
 840 }
 841
 842 static void
 843 x11_destroy(struct weston_compositor *ec)
 844 {
 845         struct x11_compositor *compositor = (struct x11_compositor *)ec;
 846
 847         wl_event_source_remove(compositor->xcb_source);
 848         x11_input_destroy(compositor);
 849
 850         weston_compositor_shutdown(ec); /* destroys outputs, too */
 851
 852         x11_compositor_fini_egl(compositor);
 853
 854         XCloseDisplay(compositor->dpy);
 855         free(ec);
 856 }
 857
 858 static struct weston_compositor *
 859 x11_compositor_create(struct wl_display *display,
 860                       int width, int height, int count, int fullscreen,
 861                       int no_input,
 862                       int argc, char *argv[], const char *config_file)
 863 {
 864         struct x11_compositor *c;
 865         xcb_screen_iterator_t s;
 866         int i, x;
 867
 868         c = malloc(sizeof *c);
 869         if (c == NULL)
 870                 return NULL;
 871
 872         memset(c, 0, sizeof *c);
 873
 874         c->dpy = XOpenDisplay(NULL);
 875         if (c->dpy == NULL)
 876                 return NULL;
 877
 878         c->conn = XGetXCBConnection(c->dpy);
 879         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
 880
 881         if (xcb_connection_has_error(c->conn))
 882                 return NULL;
 883
 884         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 885         c->screen = s.data;
 886         wl_array_init(&c->keys);
 887
 888         x11_compositor_get_resources(c);
 889
 890         c->base.wl_display = display;
 891         if (x11_compositor_init_egl(c) < 0)
 892                 return NULL;
 893
 894         c->base.destroy = x11_destroy;
 895
 896         /* Can't init base class until we have a current egl context */
 897         if (weston_compositor_init(&c->base, display, argc, argv,
 898                                    config_file) < 0)
 899                 return NULL;
 900
 901         for (i = 0, x = 0; i < count; i++) {
 902                 if (x11_compositor_create_output(c, x, 0, width, height,
 903                                                  fullscreen, no_input) < 0)
 904                         return NULL;
 905                 x += width;
 906         }
 907
 908         if (x11_input_create(c, no_input) < 0)
 909                 return NULL;
 910
 911         c->xcb_source =
 912                 wl_event_loop_add_fd(c->base.input_loop,
 913                                      xcb_get_file_descriptor(c->conn),
 914                                      WL_EVENT_READABLE,
 915                                      x11_compositor_handle_event, c);
 916         wl_event_source_check(c->xcb_source);
 917
 918         return &c->base;
 919 }
 920
 921 WL_EXPORT struct weston_compositor *
 922 backend_init(struct wl_display *display, int argc, char *argv[],
 923              const char *config_file)
 924 {
 925         int width = 1024, height = 640, fullscreen = 0, count = 1;
 926         int no_input = 0;
 927
 928         const struct weston_option x11_options[] = {
 929                 { WESTON_OPTION_INTEGER, "width", 0, &width },
 930                 { WESTON_OPTION_INTEGER, "height", 0, &height },
 931                 { WESTON_OPTION_BOOLEAN, "fullscreen", 0, &fullscreen },
 932                 { WESTON_OPTION_INTEGER, "output-count", 0, &count },
 933                 { WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
 934         };
 935
 936         parse_options(x11_options, ARRAY_LENGTH(x11_options), argc, argv);
 937
 938         return x11_compositor_create(display,
 939                                      width, height, count, fullscreen,
 940                                      no_input,
 941                                      argc, argv, config_file);
 942 }