src/compositor-x11.c

   1 /*
   2  * Copyright © 2008-2011 Kristian Høgsberg
   3  * Copyright © 2010-2011 Intel Corporation
   4  * Copyright © 2013 Vasily Khoruzhick <anarsoul@gmail.com>
   5  *
   6  * Permission to use, copy, modify, distribute, and sell this software and
   7  * its documentation for any purpose is hereby granted without fee, provided
   8  * that the above copyright notice appear in all copies and that both that
   9  * copyright notice and this permission notice appear in supporting
  10  * documentation, and that the name of the copyright holders not be used in
  11  * advertising or publicity pertaining to distribution of the software
  12  * without specific, written prior permission.  The copyright holders make
  13  * no representations about the suitability of this software for any
  14  * purpose.  It is provided "as is" without express or implied warranty.
  15  *
  16  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  17  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  18  * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  19  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  20  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  21  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  22  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <assert.h>
  30 #include <stddef.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <fcntl.h>
  34 #include <unistd.h>
  35 #include <errno.h>
  36 #include <sys/time.h>
  37 #include <sys/shm.h>
  38 #include <linux/input.h>
  39
  40 #include <xcb/xcb.h>
  41 #include <xcb/shm.h>
  42 #ifdef HAVE_XCB_XKB
  43 #include <xcb/xkb.h>
  44 #endif
  45
  46 #include <X11/Xlib.h>
  47 #include <X11/Xlib-xcb.h>
  48
  49 #include <xkbcommon/xkbcommon.h>
  50
  51 #include "compositor.h"
  52 #include "gl-renderer.h"
  53 #include "pixman-renderer.h"
  54 #include "../shared/config-parser.h"
  55 #include "../shared/image-loader.h"
  56
  57 #define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int(10)
  58
  59 static char *output_name;
  60 static char *output_mode;
  61 static char *output_transform;
  62 static int option_width;
  63 static int option_height;
  64 static int option_count;
  65 static struct wl_list configured_output_list;
  66
  67 struct x11_configured_output {
  68         char *name;
  69         int width, height;
  70         uint32_t transform;
  71         struct wl_list link;
  72 };
  73
  74 struct x11_compositor {
  75         struct weston_compositor         base;
  76
  77         Display                 *dpy;
  78         xcb_connection_t        *conn;
  79         xcb_screen_t            *screen;
  80         xcb_cursor_t             null_cursor;
  81         struct wl_array          keys;
  82         struct wl_event_source  *xcb_source;
  83         struct xkb_keymap       *xkb_keymap;
  84         unsigned int             has_xkb;
  85         uint8_t                  xkb_event_base;
  86         int                      use_pixman;
  87
  88         int                      has_net_wm_state_fullscreen;
  89
  90         /* We could map multi-pointer X to multiple wayland seats, but
  91          * for now we only support core X input. */
  92         struct weston_seat               core_seat;
  93         wl_fixed_t                       prev_x;
  94         wl_fixed_t                       prev_y;
  95
  96         struct {
  97                 xcb_atom_t               wm_protocols;
  98                 xcb_atom_t               wm_normal_hints;
  99                 xcb_atom_t               wm_size_hints;
 100                 xcb_atom_t               wm_delete_window;
 101                 xcb_atom_t               wm_class;
 102                 xcb_atom_t               net_wm_name;
 103                 xcb_atom_t               net_supporting_wm_check;
 104                 xcb_atom_t               net_supported;
 105                 xcb_atom_t               net_wm_icon;
 106                 xcb_atom_t               net_wm_state;
 107                 xcb_atom_t               net_wm_state_fullscreen;
 108                 xcb_atom_t               string;
 109                 xcb_atom_t               utf8_string;
 110                 xcb_atom_t               cardinal;
 111                 xcb_atom_t               xkb_names;
 112         } atom;
 113 };
 114
 115 struct x11_output {
 116         struct weston_output    base;
 117
 118         xcb_window_t            window;
 119         struct weston_mode      mode;
 120         struct wl_event_source *finish_frame_timer;
 121
 122         xcb_gc_t                gc;
 123         xcb_shm_seg_t           segment;
 124         pixman_image_t         *hw_surface;
 125         int                     shm_id;
 126         void                   *buf;
 127         uint8_t                 depth;
 128 };
 129
 130 static struct xkb_keymap *
 131 x11_compositor_get_keymap(struct x11_compositor *c)
 132 {
 133         xcb_get_property_cookie_t cookie;
 134         xcb_get_property_reply_t *reply;
 135         struct xkb_rule_names names;
 136         struct xkb_keymap *ret;
 137         const char *value_all, *value_part;
 138         int length_all, length_part;
 139
 140         memset(&names, 0, sizeof(names));
 141
 142         cookie = xcb_get_property(c->conn, 0, c->screen->root,
 143                                   c->atom.xkb_names, c->atom.string, 0, 1024);
 144         reply = xcb_get_property_reply(c->conn, cookie, NULL);
 145         if (reply == NULL)
 146                 return NULL;
 147
 148         value_all = xcb_get_property_value(reply);
 149         length_all = xcb_get_property_value_length(reply);
 150         value_part = value_all;
 151
 152 #define copy_prop_value(to) \
 153         length_part = strlen(value_part); \
 154         if (value_part + length_part < (value_all + length_all) && \
 155             length_part > 0) \
 156                 names.to = value_part; \
 157         value_part += length_part + 1;
 158
 159         copy_prop_value(rules);
 160         copy_prop_value(model);
 161         copy_prop_value(layout);
 162         copy_prop_value(variant);
 163         copy_prop_value(options);
 164 #undef copy_prop_value
 165
 166         ret = xkb_map_new_from_names(c->base.xkb_context, &names, 0);
 167
 168         free(reply);
 169         return ret;
 170 }
 171
 172 static uint32_t
 173 get_xkb_mod_mask(struct x11_compositor *c, uint32_t in)
 174 {
 175         struct weston_xkb_info *info = &c->core_seat.xkb_info;
 176         uint32_t ret = 0;
 177
 178         if ((in & ShiftMask) && info->shift_mod != XKB_MOD_INVALID)
 179                 ret |= (1 << info->shift_mod);
 180         if ((in & LockMask) && info->caps_mod != XKB_MOD_INVALID)
 181                 ret |= (1 << info->caps_mod);
 182         if ((in & ControlMask) && info->ctrl_mod != XKB_MOD_INVALID)
 183                 ret |= (1 << info->ctrl_mod);
 184         if ((in & Mod1Mask) && info->alt_mod != XKB_MOD_INVALID)
 185                 ret |= (1 << info->alt_mod);
 186         if ((in & Mod2Mask) && info->mod2_mod != XKB_MOD_INVALID)
 187                 ret |= (1 << info->mod2_mod);
 188         if ((in & Mod3Mask) && info->mod3_mod != XKB_MOD_INVALID)
 189                 ret |= (1 << info->mod3_mod);
 190         if ((in & Mod4Mask) && info->super_mod != XKB_MOD_INVALID)
 191                 ret |= (1 << info->super_mod);
 192         if ((in & Mod5Mask) && info->mod5_mod != XKB_MOD_INVALID)
 193                 ret |= (1 << info->mod5_mod);
 194
 195         return ret;
 196 }
 197
 198 static void
 199 x11_compositor_setup_xkb(struct x11_compositor *c)
 200 {
 201 #ifndef HAVE_XCB_XKB
 202         weston_log("XCB-XKB not available during build\n");
 203         c->has_xkb = 0;
 204         c->xkb_event_base = 0;
 205         return;
 206 #else
 207         const xcb_query_extension_reply_t *ext;
 208         xcb_generic_error_t *error;
 209         xcb_void_cookie_t select;
 210         xcb_xkb_use_extension_cookie_t use_ext;
 211         xcb_xkb_use_extension_reply_t *use_ext_reply;
 212         xcb_xkb_per_client_flags_cookie_t pcf;
 213         xcb_xkb_per_client_flags_reply_t *pcf_reply;
 214         xcb_xkb_get_state_cookie_t state;
 215         xcb_xkb_get_state_reply_t *state_reply;
 216
 217         c->has_xkb = 0;
 218         c->xkb_event_base = 0;
 219
 220         ext = xcb_get_extension_data(c->conn, &xcb_xkb_id);
 221         if (!ext) {
 222                 weston_log("XKB extension not available on host X11 server\n");
 223                 return;
 224         }
 225         c->xkb_event_base = ext->first_event;
 226
 227         select = xcb_xkb_select_events_checked(c->conn,
 228                                                XCB_XKB_ID_USE_CORE_KBD,
 229                                                XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
 230                                                0,
 231                                                XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
 232                                                0,
 233                                                0,
 234                                                NULL);
 235         error = xcb_request_check(c->conn, select);
 236         if (error) {
 237                 weston_log("error: failed to select for XKB state events\n");
 238                 free(error);
 239                 return;
 240         }
 241
 242         use_ext = xcb_xkb_use_extension(c->conn,
 243                                         XCB_XKB_MAJOR_VERSION,
 244                                         XCB_XKB_MINOR_VERSION);
 245         use_ext_reply = xcb_xkb_use_extension_reply(c->conn, use_ext, NULL);
 246         if (!use_ext_reply) {
 247                 weston_log("couldn't start using XKB extension\n");
 248                 return;
 249         }
 250
 251         if (!use_ext_reply->supported) {
 252                 weston_log("XKB extension version on the server is too old "
 253                            "(want %d.%d, has %d.%d)\n",
 254                            XCB_XKB_MAJOR_VERSION, XCB_XKB_MINOR_VERSION,
 255                            use_ext_reply->serverMajor, use_ext_reply->serverMinor);
 256                 free(use_ext_reply);
 257                 return;
 258         }
 259         free(use_ext_reply);
 260
 261         pcf = xcb_xkb_per_client_flags(c->conn,
 262                                        XCB_XKB_ID_USE_CORE_KBD,
 263                                        XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
 264                                        XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
 265                                        0,
 266                                        0,
 267                                        0);
 268         pcf_reply = xcb_xkb_per_client_flags_reply(c->conn, pcf, NULL);
 269         if (!pcf_reply ||
 270             !(pcf_reply->value & XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT)) {
 271                 weston_log("failed to set XKB per-client flags, not using "
 272                            "detectable repeat\n");
 273                 free(pcf_reply);
 274                 return;
 275         }
 276         free(pcf_reply);
 277
 278         state = xcb_xkb_get_state(c->conn, XCB_XKB_ID_USE_CORE_KBD);
 279         state_reply = xcb_xkb_get_state_reply(c->conn, state, NULL);
 280         if (!state_reply) {
 281                 weston_log("failed to get initial XKB state\n");
 282                 return;
 283         }
 284
 285         xkb_state_update_mask(c->core_seat.xkb_state.state,
 286                               get_xkb_mod_mask(c, state_reply->baseMods),
 287                               get_xkb_mod_mask(c, state_reply->latchedMods),
 288                               get_xkb_mod_mask(c, state_reply->lockedMods),
 289                               0,
 290                               0,
 291                               state_reply->group);
 292
 293         free(state_reply);
 294
 295         c->has_xkb = 1;
 296 #endif
 297 }
 298
 299 static int
 300 x11_input_create(struct x11_compositor *c, int no_input)
 301 {
 302         struct xkb_keymap *keymap;
 303
 304         weston_seat_init(&c->core_seat, &c->base);
 305
 306         if (no_input)
 307                 return 0;
 308
 309         weston_seat_init_pointer(&c->core_seat);
 310
 311         keymap = x11_compositor_get_keymap(c);
 312         if (weston_seat_init_keyboard(&c->core_seat, keymap) < 0)
 313                 return -1;
 314         if (keymap)
 315                 xkb_map_unref(keymap);
 316
 317         x11_compositor_setup_xkb(c);
 318
 319         return 0;
 320 }
 321
 322 static void
 323 x11_input_destroy(struct x11_compositor *compositor)
 324 {
 325         weston_seat_release(&compositor->core_seat);
 326 }
 327
 328 static void
 329 x11_output_start_repaint_loop(struct weston_output *output)
 330 {
 331         uint32_t msec;
 332         struct timeval tv;
 333
 334         gettimeofday(&tv, NULL);
 335         msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
 336         weston_output_finish_frame(output, msec);
 337 }
 338
 339 static void
 340 x11_output_repaint_gl(struct weston_output *output_base,
 341                       pixman_region32_t *damage)
 342 {
 343         struct x11_output *output = (struct x11_output *)output_base;
 344         struct weston_compositor *ec = output->base.compositor;
 345
 346         ec->renderer->repaint_output(output_base, damage);
 347
 348         pixman_region32_subtract(&ec->primary_plane.damage,
 349                                  &ec->primary_plane.damage, damage);
 350
 351         wl_event_source_timer_update(output->finish_frame_timer, 10);
 352 }
 353
 354 static void
 355 x11_output_repaint_shm(struct weston_output *output_base,
 356                        pixman_region32_t *damage)
 357 {
 358         struct x11_output *output = (struct x11_output *)output_base;
 359         struct weston_compositor *ec = output->base.compositor;
 360         struct x11_compositor *c = (struct x11_compositor *)ec;
 361         xcb_void_cookie_t cookie;
 362         xcb_generic_error_t *err;
 363
 364         pixman_renderer_output_set_buffer(output_base, output->hw_surface);
 365         ec->renderer->repaint_output(output_base, damage);
 366
 367         pixman_region32_subtract(&ec->primary_plane.damage,
 368                                  &ec->primary_plane.damage, damage);
 369         cookie = xcb_shm_put_image_checked(c->conn, output->window, output->gc,
 370                                         pixman_image_get_width(output->hw_surface),
 371                                         pixman_image_get_height(output->hw_surface),
 372                                         0, 0,
 373                                         pixman_image_get_width(output->hw_surface),
 374                                         pixman_image_get_height(output->hw_surface),
 375                                         0, 0, output->depth, XCB_IMAGE_FORMAT_Z_PIXMAP,
 376                                         0, output->segment, 0);
 377         err = xcb_request_check(c->conn, cookie);
 378         if (err != NULL) {
 379                 weston_log("Failed to put shm image, err: %d\n", err->error_code);
 380                 free(err);
 381         }
 382
 383         wl_event_source_timer_update(output->finish_frame_timer, 10);
 384 }
 385
 386 static int
 387 finish_frame_handler(void *data)
 388 {
 389         struct x11_output *output = data;
 390
 391         x11_output_start_repaint_loop(&output->base);
 392
 393         return 1;
 394 }
 395
 396 static void
 397 x11_output_deinit_shm(struct x11_compositor *c, struct x11_output *output)
 398 {
 399         xcb_void_cookie_t cookie;
 400         xcb_generic_error_t *err;
 401         xcb_free_gc(c->conn, output->gc);
 402
 403         pixman_image_unref(output->hw_surface);
 404         output->hw_surface = NULL;
 405         cookie = xcb_shm_detach_checked(c->conn, output->segment);
 406         err = xcb_request_check(c->conn, cookie);
 407         if (err) {
 408                 weston_log("xcb_shm_detach failed, error %d\n", err->error_code);
 409                 free(err);
 410         }
 411         shmdt(output->buf);
 412 }
 413
 414 static void
 415 x11_output_destroy(struct weston_output *output_base)
 416 {
 417         struct x11_output *output = (struct x11_output *)output_base;
 418         struct x11_compositor *compositor =
 419                 (struct x11_compositor *)output->base.compositor;
 420
 421         wl_list_remove(&output->base.link);
 422         wl_event_source_remove(output->finish_frame_timer);
 423
 424         if (compositor->use_pixman) {
 425                 pixman_renderer_output_destroy(output_base);
 426                 x11_output_deinit_shm(compositor, output);
 427         } else
 428                 gl_renderer_output_destroy(output_base);
 429
 430         xcb_destroy_window(compositor->conn, output->window);
 431
 432         weston_output_destroy(&output->base);
 433
 434         free(output);
 435 }
 436
 437 static void
 438 x11_output_set_wm_protocols(struct x11_compositor *c,
 439                             struct x11_output *output)
 440 {
 441         xcb_atom_t list[1];
 442
 443         list[0] = c->atom.wm_delete_window;
 444         xcb_change_property (c->conn,
 445                              XCB_PROP_MODE_REPLACE,
 446                              output->window,
 447                              c->atom.wm_protocols,
 448                              XCB_ATOM_ATOM,
 449                              32,
 450                              ARRAY_LENGTH(list),
 451                              list);
 452 }
 453
 454 struct wm_normal_hints {
 455         uint32_t flags;
 456         uint32_t pad[4];
 457         int32_t min_width, min_height;
 458         int32_t max_width, max_height;
 459         int32_t width_inc, height_inc;
 460         int32_t min_aspect_x, min_aspect_y;
 461         int32_t max_aspect_x, max_aspect_y;
 462         int32_t base_width, base_height;
 463         int32_t win_gravity;
 464 };
 465
 466 #define WM_NORMAL_HINTS_MIN_SIZE        16
 467 #define WM_NORMAL_HINTS_MAX_SIZE        32
 468
 469 static void
 470 x11_output_set_icon(struct x11_compositor *c,
 471                     struct x11_output *output, const char *filename)
 472 {
 473         uint32_t *icon;
 474         int32_t width, height;
 475         pixman_image_t *image;
 476
 477         image = load_image(filename);
 478         if (!image)
 479                 return;
 480         width = pixman_image_get_width(image);
 481         height = pixman_image_get_height(image);
 482         icon = malloc(width * height * 4 + 8);
 483         if (!icon) {
 484                 pixman_image_unref(image);
 485                 return;
 486         }
 487
 488         icon[0] = width;
 489         icon[1] = height;
 490         memcpy(icon + 2, pixman_image_get_data(image), width * height * 4);
 491         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 492                             c->atom.net_wm_icon, c->atom.cardinal, 32,
 493                             width * height + 2, icon);
 494         free(icon);
 495         pixman_image_unref(image);
 496 }
 497
 498 static void
 499 x11_output_wait_for_map(struct x11_compositor *c, struct x11_output *output)
 500 {
 501         xcb_map_notify_event_t *map_notify;
 502         xcb_configure_notify_event_t *configure_notify;
 503         xcb_generic_event_t *event;
 504         int mapped = 0, configured = 0;
 505         uint8_t response_type;
 506
 507         /* This isn't the nicest way to do this.  Ideally, we could
 508          * just go back to the main loop and once we get the configure
 509          * notify, we add the output to the compositor.  While we do
 510          * support output hotplug, we can't start up with no outputs.
 511          * We could add the output and then resize once we get the
 512          * configure notify, but we don't want to start up and
 513          * immediately resize the output.
 514          *
 515          * Also, some window managers don't give us our final
 516          * fullscreen size before map_notify, so if we don't get a
 517          * configure_notify before map_notify, we just wait for the
 518          * first one and hope that's our size. */
 519
 520         xcb_flush(c->conn);
 521
 522         while (!mapped || !configured) {
 523                 event = xcb_wait_for_event(c->conn);
 524                 response_type = event->response_type & ~0x80;
 525
 526                 switch (response_type) {
 527                 case XCB_MAP_NOTIFY:
 528                         map_notify = (xcb_map_notify_event_t *) event;
 529                         if (map_notify->window == output->window)
 530                                 mapped = 1;
 531                         break;
 532
 533                 case XCB_CONFIGURE_NOTIFY:
 534                         configure_notify =
 535                                 (xcb_configure_notify_event_t *) event;
 536
 537                         output->mode.width = configure_notify->width;
 538                         output->mode.height = configure_notify->height;
 539                         configured = 1;
 540                         break;
 541                 }
 542         }
 543 }
 544
 545 static xcb_visualtype_t *
 546 find_visual_by_id(xcb_screen_t *screen,
 547                    xcb_visualid_t id)
 548 {
 549         xcb_depth_iterator_t i;
 550         xcb_visualtype_iterator_t j;
 551         for (i = xcb_screen_allowed_depths_iterator(screen);
 552              i.rem;
 553              xcb_depth_next(&i)) {
 554                 for (j = xcb_depth_visuals_iterator(i.data);
 555                      j.rem;
 556                      xcb_visualtype_next(&j)) {
 557                         if (j.data->visual_id == id)
 558                                 return j.data;
 559                 }
 560         }
 561         return 0;
 562 }
 563
 564 static uint8_t
 565 get_depth_of_visual(xcb_screen_t *screen,
 566                    xcb_visualid_t id)
 567 {
 568         xcb_depth_iterator_t i;
 569         xcb_visualtype_iterator_t j;
 570         for (i = xcb_screen_allowed_depths_iterator(screen);
 571              i.rem;
 572              xcb_depth_next(&i)) {
 573                 for (j = xcb_depth_visuals_iterator(i.data);
 574                      j.rem;
 575                      xcb_visualtype_next(&j)) {
 576                         if (j.data->visual_id == id)
 577                                 return i.data->depth;
 578                 }
 579         }
 580         return 0;
 581 }
 582
 583 static int
 584 x11_output_init_shm(struct x11_compositor *c, struct x11_output *output,
 585         int width, int height)
 586 {
 587         xcb_screen_iterator_t iter;
 588         xcb_visualtype_t *visual_type;
 589         xcb_format_iterator_t fmt;
 590         xcb_void_cookie_t cookie;
 591         xcb_generic_error_t *err;
 592         const xcb_query_extension_reply_t *ext;
 593         int bitsperpixel = 0;
 594         pixman_format_code_t pixman_format;
 595
 596         /* Check if SHM is available */
 597         ext = xcb_get_extension_data(c->conn, &xcb_shm_id);
 598         if (ext == NULL || !ext->present) {
 599                 /* SHM is missing */
 600                 weston_log("SHM extension is not available\n");
 601                 errno = ENOENT;
 602                 return -1;
 603         }
 604
 605         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 606         visual_type = find_visual_by_id(iter.data, iter.data->root_visual);
 607         if (!visual_type) {
 608                 weston_log("Failed to lookup visual for root window\n");
 609                 errno = ENOENT;
 610                 return -1;
 611         }
 612         weston_log("Found visual, bits per value: %d, red_mask: %.8x, green_mask: %.8x, blue_mask: %.8x\n",
 613                 visual_type->bits_per_rgb_value,
 614                 visual_type->red_mask,
 615                 visual_type->green_mask,
 616                 visual_type->blue_mask);
 617         output->depth = get_depth_of_visual(iter.data, iter.data->root_visual);
 618         weston_log("Visual depth is %d\n", output->depth);
 619
 620         for (fmt = xcb_setup_pixmap_formats_iterator(xcb_get_setup(c->conn));
 621              fmt.rem;
 622              xcb_format_next(&fmt)) {
 623                 if (fmt.data->depth == output->depth) {
 624                         bitsperpixel = fmt.data->bits_per_pixel;
 625                         break;
 626                 }
 627         }
 628         weston_log("Found format for depth %d, bpp: %d\n",
 629                 output->depth, bitsperpixel);
 630
 631         if  (bitsperpixel == 32 &&
 632              visual_type->red_mask == 0xff0000 &&
 633              visual_type->green_mask == 0x00ff00 &&
 634              visual_type->blue_mask == 0x0000ff) {
 635                 weston_log("Will use x8r8g8b8 format for SHM surfaces\n");
 636                 pixman_format = PIXMAN_x8r8g8b8;
 637         } else {
 638                 weston_log("Can't find appropriate format for SHM pixmap\n");
 639                 errno = ENOTSUP;
 640                 return -1;
 641         }
 642
 643
 644         /* Create SHM segment and attach it */
 645         output->shm_id = shmget(IPC_PRIVATE, width * height * (bitsperpixel / 8), IPC_CREAT | S_IRWXU);
 646         if (output->shm_id == -1) {
 647                 weston_log("x11shm: failed to allocate SHM segment\n");
 648                 return -1;
 649         }
 650         output->buf = shmat(output->shm_id, NULL, 0 /* read/write */);
 651         if (-1 == (long)output->buf) {
 652                 weston_log("x11shm: failed to attach SHM segment\n");
 653                 return -1;
 654         }
 655         output->segment = xcb_generate_id(c->conn);
 656         cookie = xcb_shm_attach_checked(c->conn, output->segment, output->shm_id, 1);
 657         err = xcb_request_check(c->conn, cookie);
 658         if (err) {
 659                 weston_log("x11shm: xcb_shm_attach error %d\n", err->error_code);
 660                 free(err);
 661                 return -1;
 662         }
 663
 664         shmctl(output->shm_id, IPC_RMID, NULL);
 665
 666         /* Now create pixman image */
 667         output->hw_surface = pixman_image_create_bits(pixman_format, width, height, output->buf,
 668                 width * (bitsperpixel / 8));
 669
 670         output->gc = xcb_generate_id(c->conn);
 671         xcb_create_gc(c->conn, output->gc, output->window, 0, NULL);
 672
 673         return 0;
 674 }
 675
 676 static struct x11_output *
 677 x11_compositor_create_output(struct x11_compositor *c, int x, int y,
 678                              int width, int height, int fullscreen,
 679                              int no_input, char *configured_name,
 680                              uint32_t transform)
 681 {
 682         static const char name[] = "Weston Compositor";
 683         static const char class[] = "weston-1\0Weston Compositor";
 684         char title[32];
 685         struct x11_output *output;
 686         xcb_screen_iterator_t iter;
 687         struct wm_normal_hints normal_hints;
 688         struct wl_event_loop *loop;
 689         uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
 690         xcb_atom_t atom_list[1];
 691         uint32_t values[2] = {
 692                 XCB_EVENT_MASK_EXPOSURE |
 693                 XCB_EVENT_MASK_STRUCTURE_NOTIFY,
 694                 0
 695         };
 696
 697         if (configured_name)
 698                 sprintf(title, "%s - %s", name, configured_name);
 699         else
 700                 strcpy(title, name);
 701
 702         if (!no_input)
 703                 values[0] |=
 704                         XCB_EVENT_MASK_KEY_PRESS |
 705                         XCB_EVENT_MASK_KEY_RELEASE |
 706                         XCB_EVENT_MASK_BUTTON_PRESS |
 707                         XCB_EVENT_MASK_BUTTON_RELEASE |
 708                         XCB_EVENT_MASK_POINTER_MOTION |
 709                         XCB_EVENT_MASK_ENTER_WINDOW |
 710                         XCB_EVENT_MASK_LEAVE_WINDOW |
 711                         XCB_EVENT_MASK_KEYMAP_STATE |
 712                         XCB_EVENT_MASK_FOCUS_CHANGE;
 713
 714         output = malloc(sizeof *output);
 715         if (output == NULL)
 716                 return NULL;
 717
 718         memset(output, 0, sizeof *output);
 719
 720         output->mode.flags =
 721                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 722         output->mode.width = width;
 723         output->mode.height = height;
 724         output->mode.refresh = 60000;
 725         wl_list_init(&output->base.mode_list);
 726         wl_list_insert(&output->base.mode_list, &output->mode.link);
 727
 728         values[1] = c->null_cursor;
 729         output->window = xcb_generate_id(c->conn);
 730         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 731         xcb_create_window(c->conn,
 732                           XCB_COPY_FROM_PARENT,
 733                           output->window,
 734                           iter.data->root,
 735                           0, 0,
 736                           width, height,
 737                           0,
 738                           XCB_WINDOW_CLASS_INPUT_OUTPUT,
 739                           iter.data->root_visual,
 740                           mask, values);
 741
 742         if (fullscreen) {
 743                 atom_list[0] = c->atom.net_wm_state_fullscreen;
 744                 xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE,
 745                                     output->window,
 746                                     c->atom.net_wm_state,
 747                                     XCB_ATOM_ATOM, 32,
 748                                     ARRAY_LENGTH(atom_list), atom_list);
 749         } else {
 750                 /* Don't resize me. */
 751                 memset(&normal_hints, 0, sizeof normal_hints);
 752                 normal_hints.flags =
 753                         WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
 754                 normal_hints.min_width = width;
 755                 normal_hints.min_height = height;
 756                 normal_hints.max_width = width;
 757                 normal_hints.max_height = height;
 758                 xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 759                                     c->atom.wm_normal_hints,
 760                                     c->atom.wm_size_hints, 32,
 761                                     sizeof normal_hints / 4,
 762                                     (uint8_t *) &normal_hints);
 763         }
 764
 765         /* Set window name.  Don't bother with non-EWMH WMs. */
 766         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 767                             c->atom.net_wm_name, c->atom.utf8_string, 8,
 768                             strlen(title), title);
 769         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 770                             c->atom.wm_class, c->atom.string, 8,
 771                             sizeof class, class);
 772
 773         x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
 774
 775         x11_output_set_wm_protocols(c, output);
 776
 777         xcb_map_window(c->conn, output->window);
 778
 779         if (fullscreen)
 780                 x11_output_wait_for_map(c, output);
 781
 782         output->base.origin = output->base.current;
 783         output->base.start_repaint_loop = x11_output_start_repaint_loop;
 784         if (c->use_pixman)
 785                 output->base.repaint = x11_output_repaint_shm;
 786         else
 787                 output->base.repaint = x11_output_repaint_gl;
 788         output->base.destroy = x11_output_destroy;
 789         output->base.assign_planes = NULL;
 790         output->base.set_backlight = NULL;
 791         output->base.set_dpms = NULL;
 792         output->base.switch_mode = NULL;
 793         output->base.current = &output->mode;
 794         output->base.make = "xwayland";
 795         output->base.model = "none";
 796         weston_output_init(&output->base, &c->base,
 797                            x, y, width, height, transform);
 798
 799         if (c->use_pixman) {
 800                 if (x11_output_init_shm(c, output, width, height) < 0)
 801                         return NULL;
 802                 if (pixman_renderer_output_create(&output->base) < 0) {
 803                         x11_output_deinit_shm(c, output);
 804                         return NULL;
 805                 }
 806         } else {
 807                 if (gl_renderer_output_create(&output->base, (EGLNativeWindowType)output->window) < 0)
 808                         return NULL;
 809         }
 810
 811         loop = wl_display_get_event_loop(c->base.wl_display);
 812         output->finish_frame_timer =
 813                 wl_event_loop_add_timer(loop, finish_frame_handler, output);
 814
 815         wl_list_insert(c->base.output_list.prev, &output->base.link);
 816
 817         weston_log("x11 output %dx%d, window id %d\n",
 818                    width, height, output->window);
 819
 820         return output;
 821 }
 822
 823 static struct x11_output *
 824 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 825 {
 826         struct x11_output *output;
 827
 828         wl_list_for_each(output, &c->base.output_list, base.link) {
 829                 if (output->window == window)
 830                         return output;
 831         }
 832
 833         return NULL;
 834 }
 835
 836 #ifdef HAVE_XCB_XKB
 837 static void
 838 update_xkb_state(struct x11_compositor *c, xcb_xkb_state_notify_event_t *state)
 839 {
 840         xkb_state_update_mask(c->core_seat.xkb_state.state,
 841                               get_xkb_mod_mask(c, state->baseMods),
 842                               get_xkb_mod_mask(c, state->latchedMods),
 843                               get_xkb_mod_mask(c, state->lockedMods),
 844                               0,
 845                               0,
 846                               state->group);
 847
 848         notify_modifiers(&c->core_seat,
 849                          wl_display_next_serial(c->base.wl_display));
 850 }
 851 #endif
 852
 853 /**
 854  * This is monumentally unpleasant.  If we don't have XCB-XKB bindings,
 855  * the best we can do (given that XCB also lacks XI2 support), is to take
 856  * the state from the core key events.  Unfortunately that only gives us
 857  * the effective (i.e. union of depressed/latched/locked) state, and we
 858  * need the granularity.
 859  *
 860  * So we still update the state with every key event we see, but also use
 861  * the state field from X11 events as a mask so we don't get any stuck
 862  * modifiers.
 863  */
 864 static void
 865 update_xkb_state_from_core(struct x11_compositor *c, uint16_t x11_mask)
 866 {
 867         uint32_t mask = get_xkb_mod_mask(c, x11_mask);
 868         struct weston_keyboard *keyboard = &c->core_seat.keyboard;
 869
 870         xkb_state_update_mask(c->core_seat.xkb_state.state,
 871                               keyboard->modifiers.mods_depressed & mask,
 872                               keyboard->modifiers.mods_latched & mask,
 873                               keyboard->modifiers.mods_locked & mask,
 874                               0,
 875                               0,
 876                               (x11_mask >> 13) & 3);
 877         notify_modifiers(&c->core_seat,
 878                          wl_display_next_serial(c->base.wl_display));
 879 }
 880
 881 static void
 882 x11_compositor_deliver_button_event(struct x11_compositor *c,
 883                                     xcb_generic_event_t *event, int state)
 884 {
 885         xcb_button_press_event_t *button_event =
 886                 (xcb_button_press_event_t *) event;
 887         uint32_t button;
 888         struct x11_output *output;
 889
 890         output = x11_compositor_find_output(c, button_event->event);
 891
 892         if (state)
 893                 xcb_grab_pointer(c->conn, 0, output->window,
 894                                  XCB_EVENT_MASK_BUTTON_PRESS |
 895                                  XCB_EVENT_MASK_BUTTON_RELEASE |
 896                                  XCB_EVENT_MASK_POINTER_MOTION |
 897                                  XCB_EVENT_MASK_ENTER_WINDOW |
 898                                  XCB_EVENT_MASK_LEAVE_WINDOW,
 899                                  XCB_GRAB_MODE_ASYNC,
 900                                  XCB_GRAB_MODE_ASYNC,
 901                                  output->window, XCB_CURSOR_NONE,
 902                                  button_event->time);
 903         else
 904                 xcb_ungrab_pointer(c->conn, button_event->time);
 905
 906         if (!c->has_xkb)
 907                 update_xkb_state_from_core(c, button_event->state);
 908
 909         switch (button_event->detail) {
 910         default:
 911                 button = button_event->detail + BTN_LEFT - 1;
 912                 break;
 913         case 2:
 914                 button = BTN_MIDDLE;
 915                 break;
 916         case 3:
 917                 button = BTN_RIGHT;
 918                 break;
 919         case 4:
 920                 /* Axis are measured in pixels, but the xcb events are discrete
 921                  * steps. Therefore move the axis by some pixels every step. */
 922                 if (state)
 923                         notify_axis(&c->core_seat,
 924                                     weston_compositor_get_time(),
 925                                     WL_POINTER_AXIS_VERTICAL_SCROLL,
 926                                     -DEFAULT_AXIS_STEP_DISTANCE);
 927                 return;
 928         case 5:
 929                 if (state)
 930                         notify_axis(&c->core_seat,
 931                                     weston_compositor_get_time(),
 932                                     WL_POINTER_AXIS_VERTICAL_SCROLL,
 933                                     DEFAULT_AXIS_STEP_DISTANCE);
 934                 return;
 935         case 6:
 936                 if (state)
 937                         notify_axis(&c->core_seat,
 938                                     weston_compositor_get_time(),
 939                                     WL_POINTER_AXIS_HORIZONTAL_SCROLL,
 940                                     -DEFAULT_AXIS_STEP_DISTANCE);
 941                 return;
 942         case 7:
 943                 if (state)
 944                         notify_axis(&c->core_seat,
 945                                     weston_compositor_get_time(),
 946                                     WL_POINTER_AXIS_HORIZONTAL_SCROLL,
 947                                     DEFAULT_AXIS_STEP_DISTANCE);
 948                 return;
 949         }
 950
 951         notify_button(&c->core_seat,
 952                       weston_compositor_get_time(), button,
 953                       state ? WL_POINTER_BUTTON_STATE_PRESSED :
 954                               WL_POINTER_BUTTON_STATE_RELEASED);
 955 }
 956
 957 static void
 958 x11_output_transform_coordinate(struct x11_output *x11_output,
 959                                                 wl_fixed_t *x, wl_fixed_t *y)
 960 {
 961         struct weston_output *output = &x11_output->base;
 962         wl_fixed_t tx, ty;
 963         wl_fixed_t width = wl_fixed_from_int(output->width - 1);
 964         wl_fixed_t height = wl_fixed_from_int(output->height - 1);
 965
 966         switch(output->transform) {
 967         case WL_OUTPUT_TRANSFORM_NORMAL:
 968         default:
 969                 tx = *x;
 970                 ty = *y;
 971                 break;
 972         case WL_OUTPUT_TRANSFORM_90:
 973                 tx = *y;
 974                 ty = height - *x;
 975                 break;
 976         case WL_OUTPUT_TRANSFORM_180:
 977                 tx = width - *x;
 978                 ty = height - *y;
 979                 break;
 980         case WL_OUTPUT_TRANSFORM_270:
 981                 tx = width - *y;
 982                 ty = *x;
 983                 break;
 984         case WL_OUTPUT_TRANSFORM_FLIPPED:
 985                 tx = width - *x;
 986                 ty = *y;
 987                 break;
 988         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
 989                 tx = width - *y;
 990                 ty = height - *x;
 991                 break;
 992         case WL_OUTPUT_TRANSFORM_FLIPPED_180:
 993                 tx = *x;
 994                 ty = height - *y;
 995                 break;
 996         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
 997                 tx = *y;
 998                 ty = *x;
 999                 break;
1000         }
1001
1002         tx += wl_fixed_from_int(output->x);
1003         ty += wl_fixed_from_int(output->y);
1004
1005         *x = tx;
1006         *y = ty;
1007 }
1008
1009 static void
1010 x11_compositor_deliver_motion_event(struct x11_compositor *c,
1011                                         xcb_generic_event_t *event)
1012 {
1013         struct x11_output *output;
1014         wl_fixed_t x, y;
1015         xcb_motion_notify_event_t *motion_notify =
1016                         (xcb_motion_notify_event_t *) event;
1017
1018         if (!c->has_xkb)
1019                 update_xkb_state_from_core(c, motion_notify->state);
1020         output = x11_compositor_find_output(c, motion_notify->event);
1021         x = wl_fixed_from_int(motion_notify->event_x);
1022         y = wl_fixed_from_int(motion_notify->event_y);
1023         x11_output_transform_coordinate(output, &x, &y);
1024
1025         notify_motion(&c->core_seat, weston_compositor_get_time(),
1026                       x - c->prev_x, y - c->prev_y);
1027
1028         c->prev_x = x;
1029         c->prev_y = y;
1030 }
1031
1032 static void
1033 x11_compositor_deliver_enter_event(struct x11_compositor *c,
1034                                         xcb_generic_event_t *event)
1035 {
1036         struct x11_output *output;
1037         wl_fixed_t x, y;
1038
1039         xcb_enter_notify_event_t *enter_notify =
1040                         (xcb_enter_notify_event_t *) event;
1041         if (enter_notify->state >= Button1Mask)
1042                 return;
1043         if (!c->has_xkb)
1044                 update_xkb_state_from_core(c, enter_notify->state);
1045         output = x11_compositor_find_output(c, enter_notify->event);
1046         x = wl_fixed_from_int(enter_notify->event_x);
1047         y = wl_fixed_from_int(enter_notify->event_y);
1048         x11_output_transform_coordinate(output, &x, &y);
1049
1050         notify_pointer_focus(&c->core_seat, &output->base, x, y);
1051
1052         c->prev_x = x;
1053         c->prev_y = y;
1054 }
1055
1056 static int
1057 x11_compositor_next_event(struct x11_compositor *c,
1058                           xcb_generic_event_t **event, uint32_t mask)
1059 {
1060         if (mask & WL_EVENT_READABLE) {
1061                 *event = xcb_poll_for_event(c->conn);
1062         } else {
1063 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
1064                 *event = xcb_poll_for_queued_event(c->conn);
1065 #else
1066                 *event = xcb_poll_for_event(c->conn);
1067 #endif
1068         }
1069
1070         return *event != NULL;
1071 }
1072
1073 static int
1074 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
1075 {
1076         struct x11_compositor *c = data;
1077         struct x11_output *output;
1078         xcb_generic_event_t *event, *prev;
1079         xcb_client_message_event_t *client_message;
1080         xcb_enter_notify_event_t *enter_notify;
1081         xcb_key_press_event_t *key_press, *key_release;
1082         xcb_keymap_notify_event_t *keymap_notify;
1083         xcb_focus_in_event_t *focus_in;
1084         xcb_expose_event_t *expose;
1085         xcb_atom_t atom;
1086         uint32_t *k;
1087         uint32_t i, set;
1088         uint8_t response_type;
1089         int count;
1090
1091         prev = NULL;
1092         count = 0;
1093         while (x11_compositor_next_event(c, &event, mask)) {
1094                 response_type = event->response_type & ~0x80;
1095
1096                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
1097                 case XCB_KEY_RELEASE:
1098                         /* Suppress key repeat events; this is only used if we
1099                          * don't have XCB XKB support. */
1100                         key_release = (xcb_key_press_event_t *) prev;
1101                         key_press = (xcb_key_press_event_t *) event;
1102                         if (response_type == XCB_KEY_PRESS &&
1103                             key_release->time == key_press->time &&
1104                             key_release->detail == key_press->detail) {
1105                                 /* Don't deliver the held key release
1106                                  * event or the new key press event. */
1107                                 free(event);
1108                                 free(prev);
1109                                 prev = NULL;
1110                                 continue;
1111                         } else {
1112                                 /* Deliver the held key release now
1113                                  * and fall through and handle the new
1114                                  * event below. */
1115                                 update_xkb_state_from_core(c, key_release->state);
1116                                 notify_key(&c->core_seat,
1117                                            weston_compositor_get_time(),
1118                                            key_release->detail - 8,
1119                                            WL_KEYBOARD_KEY_STATE_RELEASED,
1120                                            STATE_UPDATE_AUTOMATIC);
1121                                 free(prev);
1122                                 prev = NULL;
1123                                 break;
1124                         }
1125
1126                 case XCB_FOCUS_IN:
1127                         assert(response_type == XCB_KEYMAP_NOTIFY);
1128                         keymap_notify = (xcb_keymap_notify_event_t *) event;
1129                         c->keys.size = 0;
1130                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
1131                                 set = keymap_notify->keys[i >> 3] &
1132                                         (1 << (i & 7));
1133                                 if (set) {
1134                                         k = wl_array_add(&c->keys, sizeof *k);
1135                                         *k = i;
1136                                 }
1137                         }
1138
1139                         /* Unfortunately the state only comes with the enter
1140                          * event, rather than with the focus event.  I'm not
1141                          * sure of the exact semantics around it and whether
1142                          * we can ensure that we get both? */
1143                         notify_keyboard_focus_in(&c->core_seat, &c->keys,
1144                                                  STATE_UPDATE_AUTOMATIC);
1145
1146                         free(prev);
1147                         prev = NULL;
1148                         break;
1149
1150                 default:
1151                         /* No previous event held */
1152                         break;
1153                 }
1154
1155                 switch (response_type) {
1156                 case XCB_KEY_PRESS:
1157                         key_press = (xcb_key_press_event_t *) event;
1158                         if (!c->has_xkb)
1159                                 update_xkb_state_from_core(c, key_press->state);
1160                         notify_key(&c->core_seat,
1161                                    weston_compositor_get_time(),
1162                                    key_press->detail - 8,
1163                                    WL_KEYBOARD_KEY_STATE_PRESSED,
1164                                    c->has_xkb ? STATE_UPDATE_NONE :
1165                                                 STATE_UPDATE_AUTOMATIC);
1166                         break;
1167                 case XCB_KEY_RELEASE:
1168                         /* If we don't have XKB, we need to use the lame
1169                          * autorepeat detection above. */
1170                         if (!c->has_xkb) {
1171                                 prev = event;
1172                                 break;
1173                         }
1174                         key_release = (xcb_key_press_event_t *) event;
1175                         notify_key(&c->core_seat,
1176                                    weston_compositor_get_time(),
1177                                    key_release->detail - 8,
1178                                    WL_KEYBOARD_KEY_STATE_RELEASED,
1179                                    STATE_UPDATE_NONE);
1180                         break;
1181                 case XCB_BUTTON_PRESS:
1182                         x11_compositor_deliver_button_event(c, event, 1);
1183                         break;
1184                 case XCB_BUTTON_RELEASE:
1185                         x11_compositor_deliver_button_event(c, event, 0);
1186                         break;
1187                 case XCB_MOTION_NOTIFY:
1188                         x11_compositor_deliver_motion_event(c, event);
1189                         break;
1190
1191                 case XCB_EXPOSE:
1192                         expose = (xcb_expose_event_t *) event;
1193                         output = x11_compositor_find_output(c, expose->window);
1194                         weston_output_schedule_repaint(&output->base);
1195                         break;
1196
1197                 case XCB_ENTER_NOTIFY:
1198                         x11_compositor_deliver_enter_event(c, event);
1199                         break;
1200
1201                 case XCB_LEAVE_NOTIFY:
1202                         enter_notify = (xcb_enter_notify_event_t *) event;
1203                         if (enter_notify->state >= Button1Mask)
1204                                 break;
1205                         if (!c->has_xkb)
1206                                 update_xkb_state_from_core(c, enter_notify->state);
1207                         notify_pointer_focus(&c->core_seat, NULL, 0, 0);
1208                         break;
1209
1210                 case XCB_CLIENT_MESSAGE:
1211                         client_message = (xcb_client_message_event_t *) event;
1212                         atom = client_message->data.data32[0];
1213                         if (atom == c->atom.wm_delete_window)
1214                                 wl_display_terminate(c->base.wl_display);
1215                         break;
1216
1217                 case XCB_FOCUS_IN:
1218                         focus_in = (xcb_focus_in_event_t *) event;
1219                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
1220                                 break;
1221
1222                         prev = event;
1223                         break;
1224
1225                 case XCB_FOCUS_OUT:
1226                         focus_in = (xcb_focus_in_event_t *) event;
1227                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
1228                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
1229                                 break;
1230                         notify_keyboard_focus_out(&c->core_seat);
1231                         break;
1232
1233                 default:
1234                         break;
1235                 }
1236
1237 #ifdef HAVE_XCB_XKB
1238                 if (c->has_xkb &&
1239                     response_type == c->xkb_event_base) {
1240                         xcb_xkb_state_notify_event_t *state =
1241                                 (xcb_xkb_state_notify_event_t *) event;
1242                         if (state->xkbType == XCB_XKB_STATE_NOTIFY)
1243                                 update_xkb_state(c, state);
1244                 }
1245 #endif
1246
1247                 count++;
1248                 if (prev != event)
1249                         free (event);
1250         }
1251
1252         switch (prev ? prev->response_type & ~0x80 : 0x80) {
1253         case XCB_KEY_RELEASE:
1254                 key_release = (xcb_key_press_event_t *) prev;
1255                 update_xkb_state_from_core(c, key_release->state);
1256                 notify_key(&c->core_seat,
1257                            weston_compositor_get_time(),
1258                            key_release->detail - 8,
1259                            WL_KEYBOARD_KEY_STATE_RELEASED,
1260                            STATE_UPDATE_AUTOMATIC);
1261                 free(prev);
1262                 prev = NULL;
1263                 break;
1264         default:
1265                 break;
1266         }
1267
1268         return count;
1269 }
1270
1271 #define F(field) offsetof(struct x11_compositor, field)
1272
1273 static void
1274 x11_compositor_get_resources(struct x11_compositor *c)
1275 {
1276         static const struct { const char *name; int offset; } atoms[] = {
1277                 { "WM_PROTOCOLS",       F(atom.wm_protocols) },
1278                 { "WM_NORMAL_HINTS",    F(atom.wm_normal_hints) },
1279                 { "WM_SIZE_HINTS",      F(atom.wm_size_hints) },
1280                 { "WM_DELETE_WINDOW",   F(atom.wm_delete_window) },
1281                 { "WM_CLASS",           F(atom.wm_class) },
1282                 { "_NET_WM_NAME",       F(atom.net_wm_name) },
1283                 { "_NET_WM_ICON",       F(atom.net_wm_icon) },
1284                 { "_NET_WM_STATE",      F(atom.net_wm_state) },
1285                 { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
1286                 { "_NET_SUPPORTING_WM_CHECK",
1287                                         F(atom.net_supporting_wm_check) },
1288                 { "_NET_SUPPORTED",     F(atom.net_supported) },
1289                 { "STRING",             F(atom.string) },
1290                 { "UTF8_STRING",        F(atom.utf8_string) },
1291                 { "CARDINAL",           F(atom.cardinal) },
1292                 { "_XKB_RULES_NAMES",   F(atom.xkb_names) },
1293         };
1294
1295         xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
1296         xcb_intern_atom_reply_t *reply;
1297         xcb_pixmap_t pixmap;
1298         xcb_gc_t gc;
1299         unsigned int i;
1300         uint8_t data[] = { 0, 0, 0, 0 };
1301
1302         for (i = 0; i < ARRAY_LENGTH(atoms); i++)
1303                 cookies[i] = xcb_intern_atom (c->conn, 0,
1304                                               strlen(atoms[i].name),
1305                                               atoms[i].name);
1306
1307         for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
1308                 reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
1309                 *(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
1310                 free(reply);
1311         }
1312
1313         pixmap = xcb_generate_id(c->conn);
1314         gc = xcb_generate_id(c->conn);
1315         xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
1316         xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
1317         xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
1318                       pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
1319         c->null_cursor = xcb_generate_id(c->conn);
1320         xcb_create_cursor (c->conn, c->null_cursor,
1321                            pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
1322         xcb_free_gc(c->conn, gc);
1323         xcb_free_pixmap(c->conn, pixmap);
1324 }
1325
1326 static void
1327 x11_compositor_get_wm_info(struct x11_compositor *c)
1328 {
1329         xcb_get_property_cookie_t cookie;
1330         xcb_get_property_reply_t *reply;
1331         xcb_atom_t *atom;
1332         unsigned int i;
1333
1334         cookie = xcb_get_property(c->conn, 0, c->screen->root,
1335                                   c->atom.net_supported,
1336                                   XCB_ATOM_ATOM, 0, 1024);
1337         reply = xcb_get_property_reply(c->conn, cookie, NULL);
1338         if (reply == NULL)
1339                 return;
1340
1341         atom = (xcb_atom_t *) xcb_get_property_value(reply);
1342
1343         for (i = 0; i < reply->value_len; i++) {
1344                 if (atom[i] == c->atom.net_wm_state_fullscreen)
1345                         c->has_net_wm_state_fullscreen = 1;
1346         }
1347 }
1348
1349 static void
1350 x11_restore(struct weston_compositor *ec)
1351 {
1352 }
1353
1354 static void
1355 x11_free_configured_output(struct x11_configured_output *output)
1356 {
1357         free(output->name);
1358         free(output);
1359 }
1360
1361 static void
1362 x11_destroy(struct weston_compositor *ec)
1363 {
1364         struct x11_compositor *compositor = (struct x11_compositor *)ec;
1365         struct x11_configured_output *o, *n;
1366
1367         wl_list_for_each_safe(o, n, &configured_output_list, link)
1368                 x11_free_configured_output(o);
1369
1370         wl_event_source_remove(compositor->xcb_source);
1371         x11_input_destroy(compositor);
1372
1373         weston_compositor_shutdown(ec); /* destroys outputs, too */
1374
1375         ec->renderer->destroy(ec);
1376
1377         XCloseDisplay(compositor->dpy);
1378         free(ec);
1379 }
1380
1381 static struct weston_compositor *
1382 x11_compositor_create(struct wl_display *display,
1383                       int fullscreen,
1384                       int no_input,
1385                       int use_pixman,
1386                       int *argc, char *argv[], const char *config_file)
1387 {
1388         struct x11_compositor *c;
1389         struct x11_configured_output *o;
1390         struct x11_output *output;
1391         xcb_screen_iterator_t s;
1392         int i, x = 0, output_count = 0;
1393         int width, height, count;
1394
1395         weston_log("initializing x11 backend\n");
1396
1397         c = malloc(sizeof *c);
1398         if (c == NULL)
1399                 return NULL;
1400
1401         memset(c, 0, sizeof *c);
1402
1403         if (weston_compositor_init(&c->base, display, argc, argv,
1404                                    config_file) < 0)
1405                 goto err_free;
1406
1407         c->dpy = XOpenDisplay(NULL);
1408         if (c->dpy == NULL)
1409                 goto err_free;
1410
1411         c->conn = XGetXCBConnection(c->dpy);
1412         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
1413
1414         if (xcb_connection_has_error(c->conn))
1415                 goto err_xdisplay;
1416
1417         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
1418         c->screen = s.data;
1419         wl_array_init(&c->keys);
1420
1421         x11_compositor_get_resources(c);
1422         x11_compositor_get_wm_info(c);
1423
1424         if (!c->has_net_wm_state_fullscreen && fullscreen) {
1425                 weston_log("Can not fullscreen without window manager support"
1426                            "(need _NET_WM_STATE_FULLSCREEN)\n");
1427                 fullscreen = 0;
1428         }
1429
1430         c->base.wl_display = display;
1431         c->use_pixman = use_pixman;
1432         if (c->use_pixman) {
1433                 if (pixman_renderer_init(&c->base) < 0)
1434                         goto err_xdisplay;
1435         }
1436         else {
1437                 if (gl_renderer_create(&c->base, (EGLNativeDisplayType)c->dpy, gl_renderer_opaque_attribs,
1438                                 NULL) < 0)
1439                         goto err_xdisplay;
1440         }
1441         weston_log("Using %s renderer\n", use_pixman ? "pixman" : "gl");
1442
1443         c->base.destroy = x11_destroy;
1444         c->base.restore = x11_restore;
1445
1446         if (x11_input_create(c, no_input) < 0)
1447                 goto err_renderer;
1448
1449         width = option_width ? option_width : 1024;
1450         height = option_height ? option_height : 640;
1451         count = option_count ? option_count : 1;
1452
1453         wl_list_for_each(o, &configured_output_list, link) {
1454                 output = x11_compositor_create_output(c, x, 0,
1455                                                       option_width ? width :
1456                                                       o->width,
1457                                                       option_height ? height :
1458                                                       o->height,
1459                                                       fullscreen, no_input,
1460                                                       o->name, o->transform);
1461                 if (output == NULL)
1462                         goto err_x11_input;
1463
1464                 x = pixman_region32_extents(&output->base.region)->x2;
1465
1466                 output_count++;
1467                 if (option_count && output_count >= option_count)
1468                         break;
1469         }
1470
1471         for (i = output_count; i < count; i++) {
1472                 output = x11_compositor_create_output(c, x, 0, width, height,
1473                                                       fullscreen, no_input, NULL,
1474                                                       WL_OUTPUT_TRANSFORM_NORMAL);
1475                 if (output == NULL)
1476                         goto err_x11_input;
1477                 x = pixman_region32_extents(&output->base.region)->x2;
1478         }
1479
1480         c->xcb_source =
1481                 wl_event_loop_add_fd(c->base.input_loop,
1482                                      xcb_get_file_descriptor(c->conn),
1483                                      WL_EVENT_READABLE,
1484                                      x11_compositor_handle_event, c);
1485         wl_event_source_check(c->xcb_source);
1486
1487         return &c->base;
1488
1489 err_x11_input:
1490         x11_input_destroy(c);
1491 err_renderer:
1492         c->base.renderer->destroy(&c->base);
1493 err_xdisplay:
1494         XCloseDisplay(c->dpy);
1495 err_free:
1496         free(c);
1497         return NULL;
1498 }
1499
1500 static void
1501 x11_output_set_transform(struct x11_configured_output *output)
1502 {
1503         if (!output_transform) {
1504                 output->transform = WL_OUTPUT_TRANSFORM_NORMAL;
1505                 return;
1506         }
1507
1508         if (!strcmp(output_transform, "normal"))
1509                 output->transform = WL_OUTPUT_TRANSFORM_NORMAL;
1510         else if (!strcmp(output_transform, "90"))
1511                 output->transform = WL_OUTPUT_TRANSFORM_90;
1512         else if (!strcmp(output_transform, "180"))
1513                 output->transform = WL_OUTPUT_TRANSFORM_180;
1514         else if (!strcmp(output_transform, "270"))
1515                 output->transform = WL_OUTPUT_TRANSFORM_270;
1516         else if (!strcmp(output_transform, "flipped"))
1517                 output->transform = WL_OUTPUT_TRANSFORM_FLIPPED;
1518         else if (!strcmp(output_transform, "flipped-90"))
1519                 output->transform = WL_OUTPUT_TRANSFORM_FLIPPED_90;
1520         else if (!strcmp(output_transform, "flipped-180"))
1521                 output->transform = WL_OUTPUT_TRANSFORM_FLIPPED_180;
1522         else if (!strcmp(output_transform, "flipped-270"))
1523                 output->transform = WL_OUTPUT_TRANSFORM_FLIPPED_270;
1524         else {
1525                 weston_log("Invalid transform \"%s\" for output %s\n",
1526                                                 output_transform, output_name);
1527                 output->transform = WL_OUTPUT_TRANSFORM_NORMAL;
1528         }
1529 }
1530
1531 static void
1532 output_section_done(void *data)
1533 {
1534         struct x11_configured_output *output;
1535
1536         output = malloc(sizeof *output);
1537
1538         if (!output || !output_name || (output_name[0] != 'X') ||
1539                                 (!output_mode && !output_transform)) {
1540                 if (output_name)
1541                         free(output_name);
1542                 output_name = NULL;
1543                 free(output);
1544                 goto err_free;
1545         }
1546
1547         output->name = output_name;
1548
1549         if (output_mode) {
1550                 if (sscanf(output_mode, "%dx%d", &output->width,
1551                                                 &output->height) != 2) {
1552                         weston_log("Invalid mode \"%s\" for output %s\n",
1553                                                         output_mode, output_name);
1554                         x11_free_configured_output(output);
1555                         goto err_free;
1556                 }
1557         } else {
1558                 output->width = 1024;
1559                 output->height = 640;
1560         }
1561
1562         x11_output_set_transform(output);
1563
1564         wl_list_insert(configured_output_list.prev, &output->link);
1565
1566 err_free:
1567         if (output_mode)
1568                 free(output_mode);
1569         if (output_transform)
1570                 free(output_transform);
1571         output_mode = NULL;
1572         output_transform = NULL;
1573 }
1574
1575 WL_EXPORT struct weston_compositor *
1576 backend_init(struct wl_display *display, int *argc, char *argv[],
1577              const char *config_file)
1578 {
1579         int fullscreen = 0;
1580         int no_input = 0;
1581         int use_pixman = 0;
1582
1583         const struct weston_option x11_options[] = {
1584                 { WESTON_OPTION_INTEGER, "width", 0, &option_width },
1585                 { WESTON_OPTION_INTEGER, "height", 0, &option_height },
1586                 { WESTON_OPTION_BOOLEAN, "fullscreen", 'f', &fullscreen },
1587                 { WESTON_OPTION_INTEGER, "output-count", 0, &option_count },
1588                 { WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
1589                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
1590         };
1591
1592         parse_options(x11_options, ARRAY_LENGTH(x11_options), argc, argv);
1593
1594         wl_list_init(&configured_output_list);
1595
1596         const struct config_key x11_config_keys[] = {
1597                 { "name", CONFIG_KEY_STRING, &output_name },
1598                 { "mode", CONFIG_KEY_STRING, &output_mode },
1599                 { "transform", CONFIG_KEY_STRING, &output_transform },
1600         };
1601
1602         const struct config_section config_section[] = {
1603                 { "output", x11_config_keys,
1604                 ARRAY_LENGTH(x11_config_keys), output_section_done },
1605         };
1606
1607         parse_config_file(config_file, config_section,
1608                                 ARRAY_LENGTH(config_section), NULL);
1609
1610         return x11_compositor_create(display,
1611                                      fullscreen,
1612                                      no_input,
1613                                      use_pixman,
1614                                      argc, argv, config_file);
1615 }