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 #include "config.h"
  26
  27 #include <assert.h>
  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 <sys/shm.h>
  36 #include <linux/input.h>
  37
  38 #include <xcb/xcb.h>
  39 #include <xcb/shm.h>
  40 #ifdef HAVE_XCB_XKB
  41 #include <xcb/xkb.h>
  42 #endif
  43
  44 #include <X11/Xlib.h>
  45 #include <X11/Xlib-xcb.h>
  46
  47 #include <xkbcommon/xkbcommon.h>
  48
  49 #include "compositor.h"
  50 #include "gl-renderer.h"
  51 #include "pixman-renderer.h"
  52 #include "../shared/config-parser.h"
  53 #include "../shared/image-loader.h"
  54
  55 #define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int(10)
  56
  57 static int option_width;
  58 static int option_height;
  59 static int option_scale;
  60 static int option_count;
  61
  62 struct x11_compositor {
  63         struct weston_compositor         base;
  64
  65         Display                 *dpy;
  66         xcb_connection_t        *conn;
  67         xcb_screen_t            *screen;
  68         xcb_cursor_t             null_cursor;
  69         struct wl_array          keys;
  70         struct wl_event_source  *xcb_source;
  71         struct xkb_keymap       *xkb_keymap;
  72         unsigned int             has_xkb;
  73         uint8_t                  xkb_event_base;
  74         int                      use_pixman;
  75
  76         int                      has_net_wm_state_fullscreen;
  77
  78         /* We could map multi-pointer X to multiple wayland seats, but
  79          * for now we only support core X input. */
  80         struct weston_seat               core_seat;
  81         wl_fixed_t                       prev_x;
  82         wl_fixed_t                       prev_y;
  83
  84         struct {
  85                 xcb_atom_t               wm_protocols;
  86                 xcb_atom_t               wm_normal_hints;
  87                 xcb_atom_t               wm_size_hints;
  88                 xcb_atom_t               wm_delete_window;
  89                 xcb_atom_t               wm_class;
  90                 xcb_atom_t               net_wm_name;
  91                 xcb_atom_t               net_supporting_wm_check;
  92                 xcb_atom_t               net_supported;
  93                 xcb_atom_t               net_wm_icon;
  94                 xcb_atom_t               net_wm_state;
  95                 xcb_atom_t               net_wm_state_fullscreen;
  96                 xcb_atom_t               string;
  97                 xcb_atom_t               utf8_string;
  98                 xcb_atom_t               cardinal;
  99                 xcb_atom_t               xkb_names;
 100         } atom;
 101 };
 102
 103 struct x11_output {
 104         struct weston_output    base;
 105
 106         xcb_window_t            window;
 107         struct weston_mode      mode;
 108         struct wl_event_source *finish_frame_timer;
 109
 110         xcb_gc_t                gc;
 111         xcb_shm_seg_t           segment;
 112         pixman_image_t         *hw_surface;
 113         int                     shm_id;
 114         void                   *buf;
 115         uint8_t                 depth;
 116         int32_t                 scale;
 117 };
 118
 119 struct gl_renderer_interface *gl_renderer;
 120
 121 static struct xkb_keymap *
 122 x11_compositor_get_keymap(struct x11_compositor *c)
 123 {
 124         xcb_get_property_cookie_t cookie;
 125         xcb_get_property_reply_t *reply;
 126         struct xkb_rule_names names;
 127         struct xkb_keymap *ret;
 128         const char *value_all, *value_part;
 129         int length_all, length_part;
 130
 131         memset(&names, 0, sizeof(names));
 132
 133         cookie = xcb_get_property(c->conn, 0, c->screen->root,
 134                                   c->atom.xkb_names, c->atom.string, 0, 1024);
 135         reply = xcb_get_property_reply(c->conn, cookie, NULL);
 136         if (reply == NULL)
 137                 return NULL;
 138
 139         value_all = xcb_get_property_value(reply);
 140         length_all = xcb_get_property_value_length(reply);
 141         value_part = value_all;
 142
 143 #define copy_prop_value(to) \
 144         length_part = strlen(value_part); \
 145         if (value_part + length_part < (value_all + length_all) && \
 146             length_part > 0) \
 147                 names.to = value_part; \
 148         value_part += length_part + 1;
 149
 150         copy_prop_value(rules);
 151         copy_prop_value(model);
 152         copy_prop_value(layout);
 153         copy_prop_value(variant);
 154         copy_prop_value(options);
 155 #undef copy_prop_value
 156
 157         ret = xkb_keymap_new_from_names(c->base.xkb_context, &names, 0);
 158
 159         free(reply);
 160         return ret;
 161 }
 162
 163 static uint32_t
 164 get_xkb_mod_mask(struct x11_compositor *c, uint32_t in)
 165 {
 166         struct weston_xkb_info *info = c->core_seat.keyboard->xkb_info;
 167         uint32_t ret = 0;
 168
 169         if ((in & ShiftMask) && info->shift_mod != XKB_MOD_INVALID)
 170                 ret |= (1 << info->shift_mod);
 171         if ((in & LockMask) && info->caps_mod != XKB_MOD_INVALID)
 172                 ret |= (1 << info->caps_mod);
 173         if ((in & ControlMask) && info->ctrl_mod != XKB_MOD_INVALID)
 174                 ret |= (1 << info->ctrl_mod);
 175         if ((in & Mod1Mask) && info->alt_mod != XKB_MOD_INVALID)
 176                 ret |= (1 << info->alt_mod);
 177         if ((in & Mod2Mask) && info->mod2_mod != XKB_MOD_INVALID)
 178                 ret |= (1 << info->mod2_mod);
 179         if ((in & Mod3Mask) && info->mod3_mod != XKB_MOD_INVALID)
 180                 ret |= (1 << info->mod3_mod);
 181         if ((in & Mod4Mask) && info->super_mod != XKB_MOD_INVALID)
 182                 ret |= (1 << info->super_mod);
 183         if ((in & Mod5Mask) && info->mod5_mod != XKB_MOD_INVALID)
 184                 ret |= (1 << info->mod5_mod);
 185
 186         return ret;
 187 }
 188
 189 static void
 190 x11_compositor_setup_xkb(struct x11_compositor *c)
 191 {
 192 #ifndef HAVE_XCB_XKB
 193         weston_log("XCB-XKB not available during build\n");
 194         c->has_xkb = 0;
 195         c->xkb_event_base = 0;
 196         return;
 197 #else
 198         const xcb_query_extension_reply_t *ext;
 199         xcb_generic_error_t *error;
 200         xcb_void_cookie_t select;
 201         xcb_xkb_use_extension_cookie_t use_ext;
 202         xcb_xkb_use_extension_reply_t *use_ext_reply;
 203         xcb_xkb_per_client_flags_cookie_t pcf;
 204         xcb_xkb_per_client_flags_reply_t *pcf_reply;
 205         xcb_xkb_get_state_cookie_t state;
 206         xcb_xkb_get_state_reply_t *state_reply;
 207         uint32_t values[1] = { XCB_EVENT_MASK_PROPERTY_CHANGE };
 208
 209         c->has_xkb = 0;
 210         c->xkb_event_base = 0;
 211
 212         ext = xcb_get_extension_data(c->conn, &xcb_xkb_id);
 213         if (!ext) {
 214                 weston_log("XKB extension not available on host X11 server\n");
 215                 return;
 216         }
 217         c->xkb_event_base = ext->first_event;
 218
 219         select = xcb_xkb_select_events_checked(c->conn,
 220                                                XCB_XKB_ID_USE_CORE_KBD,
 221                                                XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
 222                                                0,
 223                                                XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
 224                                                0,
 225                                                0,
 226                                                NULL);
 227         error = xcb_request_check(c->conn, select);
 228         if (error) {
 229                 weston_log("error: failed to select for XKB state events\n");
 230                 free(error);
 231                 return;
 232         }
 233
 234         use_ext = xcb_xkb_use_extension(c->conn,
 235                                         XCB_XKB_MAJOR_VERSION,
 236                                         XCB_XKB_MINOR_VERSION);
 237         use_ext_reply = xcb_xkb_use_extension_reply(c->conn, use_ext, NULL);
 238         if (!use_ext_reply) {
 239                 weston_log("couldn't start using XKB extension\n");
 240                 return;
 241         }
 242
 243         if (!use_ext_reply->supported) {
 244                 weston_log("XKB extension version on the server is too old "
 245                            "(want %d.%d, has %d.%d)\n",
 246                            XCB_XKB_MAJOR_VERSION, XCB_XKB_MINOR_VERSION,
 247                            use_ext_reply->serverMajor, use_ext_reply->serverMinor);
 248                 free(use_ext_reply);
 249                 return;
 250         }
 251         free(use_ext_reply);
 252
 253         pcf = xcb_xkb_per_client_flags(c->conn,
 254                                        XCB_XKB_ID_USE_CORE_KBD,
 255                                        XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
 256                                        XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
 257                                        0,
 258                                        0,
 259                                        0);
 260         pcf_reply = xcb_xkb_per_client_flags_reply(c->conn, pcf, NULL);
 261         if (!pcf_reply ||
 262             !(pcf_reply->value & XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT)) {
 263                 weston_log("failed to set XKB per-client flags, not using "
 264                            "detectable repeat\n");
 265                 free(pcf_reply);
 266                 return;
 267         }
 268         free(pcf_reply);
 269
 270         state = xcb_xkb_get_state(c->conn, XCB_XKB_ID_USE_CORE_KBD);
 271         state_reply = xcb_xkb_get_state_reply(c->conn, state, NULL);
 272         if (!state_reply) {
 273                 weston_log("failed to get initial XKB state\n");
 274                 return;
 275         }
 276
 277         xkb_state_update_mask(c->core_seat.keyboard->xkb_state.state,
 278                               get_xkb_mod_mask(c, state_reply->baseMods),
 279                               get_xkb_mod_mask(c, state_reply->latchedMods),
 280                               get_xkb_mod_mask(c, state_reply->lockedMods),
 281                               0,
 282                               0,
 283                               state_reply->group);
 284
 285         free(state_reply);
 286
 287         xcb_change_window_attributes(c->conn, c->screen->root,
 288                                      XCB_CW_EVENT_MASK, values);
 289
 290         c->has_xkb = 1;
 291 #endif
 292 }
 293
 294 #ifdef HAVE_XCB_XKB
 295 static void
 296 update_xkb_keymap(struct x11_compositor *c)
 297 {
 298         struct xkb_keymap *keymap;
 299
 300         keymap = x11_compositor_get_keymap(c);
 301         if (!keymap) {
 302                 weston_log("failed to get XKB keymap\n");
 303                 return;
 304         }
 305         weston_seat_update_keymap(&c->core_seat, keymap);
 306         xkb_keymap_unref(keymap);
 307 }
 308 #endif
 309
 310 static int
 311 x11_input_create(struct x11_compositor *c, int no_input)
 312 {
 313         struct xkb_keymap *keymap;
 314
 315         weston_seat_init(&c->core_seat, &c->base, "default");
 316
 317         if (no_input)
 318                 return 0;
 319
 320         weston_seat_init_pointer(&c->core_seat);
 321
 322         keymap = x11_compositor_get_keymap(c);
 323         if (weston_seat_init_keyboard(&c->core_seat, keymap) < 0)
 324                 return -1;
 325         if (keymap)
 326                 xkb_keymap_unref(keymap);
 327
 328         x11_compositor_setup_xkb(c);
 329
 330         return 0;
 331 }
 332
 333 static void
 334 x11_input_destroy(struct x11_compositor *compositor)
 335 {
 336         weston_seat_release(&compositor->core_seat);
 337 }
 338
 339 static void
 340 x11_output_start_repaint_loop(struct weston_output *output)
 341 {
 342         uint32_t msec;
 343         struct timeval tv;
 344
 345         gettimeofday(&tv, NULL);
 346         msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
 347         weston_output_finish_frame(output, msec);
 348 }
 349
 350 static int
 351 x11_output_repaint_gl(struct weston_output *output_base,
 352                       pixman_region32_t *damage)
 353 {
 354         struct x11_output *output = (struct x11_output *)output_base;
 355         struct weston_compositor *ec = output->base.compositor;
 356
 357         ec->renderer->repaint_output(output_base, damage);
 358
 359         pixman_region32_subtract(&ec->primary_plane.damage,
 360                                  &ec->primary_plane.damage, damage);
 361
 362         wl_event_source_timer_update(output->finish_frame_timer, 10);
 363         return 0;
 364 }
 365
 366 static void
 367 set_clip_for_output(struct weston_output *output_base, pixman_region32_t *region)
 368 {
 369         struct x11_output *output = (struct x11_output *)output_base;
 370         struct weston_compositor *ec = output->base.compositor;
 371         struct x11_compositor *c = (struct x11_compositor *)ec;
 372         pixman_region32_t transformed_region;
 373         pixman_box32_t *rects;
 374         xcb_rectangle_t *output_rects;
 375         xcb_void_cookie_t cookie;
 376         int nrects, i;
 377         xcb_generic_error_t *err;
 378
 379         pixman_region32_init(&transformed_region);
 380         pixman_region32_copy(&transformed_region, region);
 381         pixman_region32_translate(&transformed_region,
 382                                   -output_base->x, -output_base->y);
 383         weston_transformed_region(output_base->width, output_base->height,
 384                                   output_base->transform,
 385                                   output_base->current_scale,
 386                                   &transformed_region, &transformed_region);
 387
 388         rects = pixman_region32_rectangles(&transformed_region, &nrects);
 389         output_rects = calloc(nrects, sizeof(xcb_rectangle_t));
 390
 391         if (output_rects == NULL) {
 392                 pixman_region32_fini(&transformed_region);
 393                 return;
 394         }
 395
 396         for (i = 0; i < nrects; i++) {
 397                 output_rects[i].x = rects[i].x1;
 398                 output_rects[i].y = rects[i].y1;
 399                 output_rects[i].width = rects[i].x2 - rects[i].x1;
 400                 output_rects[i].height = rects[i].y2 - rects[i].y1;
 401         }
 402
 403         pixman_region32_fini(&transformed_region);
 404
 405         cookie = xcb_set_clip_rectangles_checked(c->conn, XCB_CLIP_ORDERING_UNSORTED,
 406                                         output->gc,
 407                                         0, 0, nrects,
 408                                         output_rects);
 409         err = xcb_request_check(c->conn, cookie);
 410         if (err != NULL) {
 411                 weston_log("Failed to set clip rects, err: %d\n", err->error_code);
 412                 free(err);
 413         }
 414         free(output_rects);
 415 }
 416
 417
 418 static int
 419 x11_output_repaint_shm(struct weston_output *output_base,
 420                        pixman_region32_t *damage)
 421 {
 422         struct x11_output *output = (struct x11_output *)output_base;
 423         struct weston_compositor *ec = output->base.compositor;
 424         struct x11_compositor *c = (struct x11_compositor *)ec;
 425         xcb_void_cookie_t cookie;
 426         xcb_generic_error_t *err;
 427
 428         pixman_renderer_output_set_buffer(output_base, output->hw_surface);
 429         ec->renderer->repaint_output(output_base, damage);
 430
 431         pixman_region32_subtract(&ec->primary_plane.damage,
 432                                  &ec->primary_plane.damage, damage);
 433         set_clip_for_output(output_base, damage);
 434         cookie = xcb_shm_put_image_checked(c->conn, output->window, output->gc,
 435                                         pixman_image_get_width(output->hw_surface),
 436                                         pixman_image_get_height(output->hw_surface),
 437                                         0, 0,
 438                                         pixman_image_get_width(output->hw_surface),
 439                                         pixman_image_get_height(output->hw_surface),
 440                                         0, 0, output->depth, XCB_IMAGE_FORMAT_Z_PIXMAP,
 441                                         0, output->segment, 0);
 442         err = xcb_request_check(c->conn, cookie);
 443         if (err != NULL) {
 444                 weston_log("Failed to put shm image, err: %d\n", err->error_code);
 445                 free(err);
 446         }
 447
 448         wl_event_source_timer_update(output->finish_frame_timer, 10);
 449         return 0;
 450 }
 451
 452 static int
 453 finish_frame_handler(void *data)
 454 {
 455         struct x11_output *output = data;
 456
 457         x11_output_start_repaint_loop(&output->base);
 458
 459         return 1;
 460 }
 461
 462 static void
 463 x11_output_deinit_shm(struct x11_compositor *c, struct x11_output *output)
 464 {
 465         xcb_void_cookie_t cookie;
 466         xcb_generic_error_t *err;
 467         xcb_free_gc(c->conn, output->gc);
 468
 469         pixman_image_unref(output->hw_surface);
 470         output->hw_surface = NULL;
 471         cookie = xcb_shm_detach_checked(c->conn, output->segment);
 472         err = xcb_request_check(c->conn, cookie);
 473         if (err) {
 474                 weston_log("xcb_shm_detach failed, error %d\n", err->error_code);
 475                 free(err);
 476         }
 477         shmdt(output->buf);
 478 }
 479
 480 static void
 481 x11_output_destroy(struct weston_output *output_base)
 482 {
 483         struct x11_output *output = (struct x11_output *)output_base;
 484         struct x11_compositor *compositor =
 485                 (struct x11_compositor *)output->base.compositor;
 486
 487         wl_event_source_remove(output->finish_frame_timer);
 488
 489         if (compositor->use_pixman) {
 490                 pixman_renderer_output_destroy(output_base);
 491                 x11_output_deinit_shm(compositor, output);
 492         } else
 493                 gl_renderer->output_destroy(output_base);
 494
 495         xcb_destroy_window(compositor->conn, output->window);
 496
 497         weston_output_destroy(&output->base);
 498
 499         free(output);
 500 }
 501
 502 static void
 503 x11_output_set_wm_protocols(struct x11_compositor *c,
 504                             struct x11_output *output)
 505 {
 506         xcb_atom_t list[1];
 507
 508         list[0] = c->atom.wm_delete_window;
 509         xcb_change_property (c->conn,
 510                              XCB_PROP_MODE_REPLACE,
 511                              output->window,
 512                              c->atom.wm_protocols,
 513                              XCB_ATOM_ATOM,
 514                              32,
 515                              ARRAY_LENGTH(list),
 516                              list);
 517 }
 518
 519 struct wm_normal_hints {
 520         uint32_t flags;
 521         uint32_t pad[4];
 522         int32_t min_width, min_height;
 523         int32_t max_width, max_height;
 524         int32_t width_inc, height_inc;
 525         int32_t min_aspect_x, min_aspect_y;
 526         int32_t max_aspect_x, max_aspect_y;
 527         int32_t base_width, base_height;
 528         int32_t win_gravity;
 529 };
 530
 531 #define WM_NORMAL_HINTS_MIN_SIZE        16
 532 #define WM_NORMAL_HINTS_MAX_SIZE        32
 533
 534 static void
 535 x11_output_set_icon(struct x11_compositor *c,
 536                     struct x11_output *output, const char *filename)
 537 {
 538         uint32_t *icon;
 539         int32_t width, height;
 540         pixman_image_t *image;
 541
 542         image = load_image(filename);
 543         if (!image)
 544                 return;
 545         width = pixman_image_get_width(image);
 546         height = pixman_image_get_height(image);
 547         icon = malloc(width * height * 4 + 8);
 548         if (!icon) {
 549                 pixman_image_unref(image);
 550                 return;
 551         }
 552
 553         icon[0] = width;
 554         icon[1] = height;
 555         memcpy(icon + 2, pixman_image_get_data(image), width * height * 4);
 556         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 557                             c->atom.net_wm_icon, c->atom.cardinal, 32,
 558                             width * height + 2, icon);
 559         free(icon);
 560         pixman_image_unref(image);
 561 }
 562
 563 static void
 564 x11_output_wait_for_map(struct x11_compositor *c, struct x11_output *output)
 565 {
 566         xcb_map_notify_event_t *map_notify;
 567         xcb_configure_notify_event_t *configure_notify;
 568         xcb_generic_event_t *event;
 569         int mapped = 0, configured = 0;
 570         uint8_t response_type;
 571
 572         /* This isn't the nicest way to do this.  Ideally, we could
 573          * just go back to the main loop and once we get the configure
 574          * notify, we add the output to the compositor.  While we do
 575          * support output hotplug, we can't start up with no outputs.
 576          * We could add the output and then resize once we get the
 577          * configure notify, but we don't want to start up and
 578          * immediately resize the output.
 579          *
 580          * Also, some window managers don't give us our final
 581          * fullscreen size before map_notify, so if we don't get a
 582          * configure_notify before map_notify, we just wait for the
 583          * first one and hope that's our size. */
 584
 585         xcb_flush(c->conn);
 586
 587         while (!mapped || !configured) {
 588                 event = xcb_wait_for_event(c->conn);
 589                 response_type = event->response_type & ~0x80;
 590
 591                 switch (response_type) {
 592                 case XCB_MAP_NOTIFY:
 593                         map_notify = (xcb_map_notify_event_t *) event;
 594                         if (map_notify->window == output->window)
 595                                 mapped = 1;
 596                         break;
 597
 598                 case XCB_CONFIGURE_NOTIFY:
 599                         configure_notify =
 600                                 (xcb_configure_notify_event_t *) event;
 601
 602
 603                         if (configure_notify->width % output->scale != 0 ||
 604                             configure_notify->height % output->scale != 0)
 605                                 weston_log("Resolution is not a multiple of screen size, rounding\n");
 606                         output->mode.width = configure_notify->width;
 607                         output->mode.height = configure_notify->height;
 608                         configured = 1;
 609                         break;
 610                 }
 611         }
 612 }
 613
 614 static xcb_visualtype_t *
 615 find_visual_by_id(xcb_screen_t *screen,
 616                    xcb_visualid_t id)
 617 {
 618         xcb_depth_iterator_t i;
 619         xcb_visualtype_iterator_t j;
 620         for (i = xcb_screen_allowed_depths_iterator(screen);
 621              i.rem;
 622              xcb_depth_next(&i)) {
 623                 for (j = xcb_depth_visuals_iterator(i.data);
 624                      j.rem;
 625                      xcb_visualtype_next(&j)) {
 626                         if (j.data->visual_id == id)
 627                                 return j.data;
 628                 }
 629         }
 630         return 0;
 631 }
 632
 633 static uint8_t
 634 get_depth_of_visual(xcb_screen_t *screen,
 635                    xcb_visualid_t id)
 636 {
 637         xcb_depth_iterator_t i;
 638         xcb_visualtype_iterator_t j;
 639         for (i = xcb_screen_allowed_depths_iterator(screen);
 640              i.rem;
 641              xcb_depth_next(&i)) {
 642                 for (j = xcb_depth_visuals_iterator(i.data);
 643                      j.rem;
 644                      xcb_visualtype_next(&j)) {
 645                         if (j.data->visual_id == id)
 646                                 return i.data->depth;
 647                 }
 648         }
 649         return 0;
 650 }
 651
 652 static int
 653 x11_output_init_shm(struct x11_compositor *c, struct x11_output *output,
 654         int width, int height)
 655 {
 656         xcb_screen_iterator_t iter;
 657         xcb_visualtype_t *visual_type;
 658         xcb_format_iterator_t fmt;
 659         xcb_void_cookie_t cookie;
 660         xcb_generic_error_t *err;
 661         const xcb_query_extension_reply_t *ext;
 662         int bitsperpixel = 0;
 663         pixman_format_code_t pixman_format;
 664
 665         /* Check if SHM is available */
 666         ext = xcb_get_extension_data(c->conn, &xcb_shm_id);
 667         if (ext == NULL || !ext->present) {
 668                 /* SHM is missing */
 669                 weston_log("SHM extension is not available\n");
 670                 errno = ENOENT;
 671                 return -1;
 672         }
 673
 674         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 675         visual_type = find_visual_by_id(iter.data, iter.data->root_visual);
 676         if (!visual_type) {
 677                 weston_log("Failed to lookup visual for root window\n");
 678                 errno = ENOENT;
 679                 return -1;
 680         }
 681         weston_log("Found visual, bits per value: %d, red_mask: %.8x, green_mask: %.8x, blue_mask: %.8x\n",
 682                 visual_type->bits_per_rgb_value,
 683                 visual_type->red_mask,
 684                 visual_type->green_mask,
 685                 visual_type->blue_mask);
 686         output->depth = get_depth_of_visual(iter.data, iter.data->root_visual);
 687         weston_log("Visual depth is %d\n", output->depth);
 688
 689         for (fmt = xcb_setup_pixmap_formats_iterator(xcb_get_setup(c->conn));
 690              fmt.rem;
 691              xcb_format_next(&fmt)) {
 692                 if (fmt.data->depth == output->depth) {
 693                         bitsperpixel = fmt.data->bits_per_pixel;
 694                         break;
 695                 }
 696         }
 697         weston_log("Found format for depth %d, bpp: %d\n",
 698                 output->depth, bitsperpixel);
 699
 700         if  (bitsperpixel == 32 &&
 701              visual_type->red_mask == 0xff0000 &&
 702              visual_type->green_mask == 0x00ff00 &&
 703              visual_type->blue_mask == 0x0000ff) {
 704                 weston_log("Will use x8r8g8b8 format for SHM surfaces\n");
 705                 pixman_format = PIXMAN_x8r8g8b8;
 706         } else if (bitsperpixel == 16 &&
 707                    visual_type->red_mask == 0x00f800 &&
 708                    visual_type->green_mask == 0x0007e0 &&
 709                    visual_type->blue_mask == 0x00001f) {
 710                 weston_log("Will use r5g6b5 format for SHM surfaces\n");
 711                 pixman_format = PIXMAN_r5g6b5;
 712         } else {
 713                 weston_log("Can't find appropriate format for SHM pixmap\n");
 714                 errno = ENOTSUP;
 715                 return -1;
 716         }
 717
 718
 719         /* Create SHM segment and attach it */
 720         output->shm_id = shmget(IPC_PRIVATE, width * height * (bitsperpixel / 8), IPC_CREAT | S_IRWXU);
 721         if (output->shm_id == -1) {
 722                 weston_log("x11shm: failed to allocate SHM segment\n");
 723                 return -1;
 724         }
 725         output->buf = shmat(output->shm_id, NULL, 0 /* read/write */);
 726         if (-1 == (long)output->buf) {
 727                 weston_log("x11shm: failed to attach SHM segment\n");
 728                 return -1;
 729         }
 730         output->segment = xcb_generate_id(c->conn);
 731         cookie = xcb_shm_attach_checked(c->conn, output->segment, output->shm_id, 1);
 732         err = xcb_request_check(c->conn, cookie);
 733         if (err) {
 734                 weston_log("x11shm: xcb_shm_attach error %d\n", err->error_code);
 735                 free(err);
 736                 return -1;
 737         }
 738
 739         shmctl(output->shm_id, IPC_RMID, NULL);
 740
 741         /* Now create pixman image */
 742         output->hw_surface = pixman_image_create_bits(pixman_format, width, height, output->buf,
 743                 width * (bitsperpixel / 8));
 744
 745         output->gc = xcb_generate_id(c->conn);
 746         xcb_create_gc(c->conn, output->gc, output->window, 0, NULL);
 747
 748         return 0;
 749 }
 750
 751 static struct x11_output *
 752 x11_compositor_create_output(struct x11_compositor *c, int x, int y,
 753                              int width, int height, int fullscreen,
 754                              int no_input, char *configured_name,
 755                              uint32_t transform, int32_t scale)
 756 {
 757         static const char name[] = "Weston Compositor";
 758         static const char class[] = "weston-1\0Weston Compositor";
 759         char title[32];
 760         struct x11_output *output;
 761         xcb_screen_iterator_t iter;
 762         struct wm_normal_hints normal_hints;
 763         struct wl_event_loop *loop;
 764         int output_width, output_height, width_mm, height_mm;
 765         int ret;
 766         uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
 767         xcb_atom_t atom_list[1];
 768         uint32_t values[2] = {
 769                 XCB_EVENT_MASK_EXPOSURE |
 770                 XCB_EVENT_MASK_STRUCTURE_NOTIFY,
 771                 0
 772         };
 773
 774         output_width = width * scale;
 775         output_height = height * scale;
 776
 777         if (configured_name)
 778                 sprintf(title, "%s - %s", name, configured_name);
 779         else
 780                 strcpy(title, name);
 781
 782         if (!no_input)
 783                 values[0] |=
 784                         XCB_EVENT_MASK_KEY_PRESS |
 785                         XCB_EVENT_MASK_KEY_RELEASE |
 786                         XCB_EVENT_MASK_BUTTON_PRESS |
 787                         XCB_EVENT_MASK_BUTTON_RELEASE |
 788                         XCB_EVENT_MASK_POINTER_MOTION |
 789                         XCB_EVENT_MASK_ENTER_WINDOW |
 790                         XCB_EVENT_MASK_LEAVE_WINDOW |
 791                         XCB_EVENT_MASK_KEYMAP_STATE |
 792                         XCB_EVENT_MASK_FOCUS_CHANGE;
 793
 794         output = zalloc(sizeof *output);
 795         if (output == NULL)
 796                 return NULL;
 797
 798         output->mode.flags =
 799                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 800
 801         output->mode.width = output_width;
 802         output->mode.height = output_height;
 803         output->mode.refresh = 60000;
 804         output->scale = scale;
 805         wl_list_init(&output->base.mode_list);
 806         wl_list_insert(&output->base.mode_list, &output->mode.link);
 807
 808         values[1] = c->null_cursor;
 809         output->window = xcb_generate_id(c->conn);
 810         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 811         xcb_create_window(c->conn,
 812                           XCB_COPY_FROM_PARENT,
 813                           output->window,
 814                           iter.data->root,
 815                           0, 0,
 816                           output_width, output_height,
 817                           0,
 818                           XCB_WINDOW_CLASS_INPUT_OUTPUT,
 819                           iter.data->root_visual,
 820                           mask, values);
 821
 822         if (fullscreen) {
 823                 atom_list[0] = c->atom.net_wm_state_fullscreen;
 824                 xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE,
 825                                     output->window,
 826                                     c->atom.net_wm_state,
 827                                     XCB_ATOM_ATOM, 32,
 828                                     ARRAY_LENGTH(atom_list), atom_list);
 829         } else {
 830                 /* Don't resize me. */
 831                 memset(&normal_hints, 0, sizeof normal_hints);
 832                 normal_hints.flags =
 833                         WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
 834                 normal_hints.min_width = output_width;
 835                 normal_hints.min_height = output_height;
 836                 normal_hints.max_width = output_width;
 837                 normal_hints.max_height = output_height;
 838                 xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 839                                     c->atom.wm_normal_hints,
 840                                     c->atom.wm_size_hints, 32,
 841                                     sizeof normal_hints / 4,
 842                                     (uint8_t *) &normal_hints);
 843         }
 844
 845         /* Set window name.  Don't bother with non-EWMH WMs. */
 846         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 847                             c->atom.net_wm_name, c->atom.utf8_string, 8,
 848                             strlen(title), title);
 849         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 850                             c->atom.wm_class, c->atom.string, 8,
 851                             sizeof class, class);
 852
 853         x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
 854
 855         x11_output_set_wm_protocols(c, output);
 856
 857         xcb_map_window(c->conn, output->window);
 858
 859         if (fullscreen)
 860                 x11_output_wait_for_map(c, output);
 861
 862         output->base.start_repaint_loop = x11_output_start_repaint_loop;
 863         if (c->use_pixman)
 864                 output->base.repaint = x11_output_repaint_shm;
 865         else
 866                 output->base.repaint = x11_output_repaint_gl;
 867         output->base.destroy = x11_output_destroy;
 868         output->base.assign_planes = NULL;
 869         output->base.set_backlight = NULL;
 870         output->base.set_dpms = NULL;
 871         output->base.switch_mode = NULL;
 872         output->base.current_mode = &output->mode;
 873         output->base.make = "xwayland";
 874         output->base.model = "none";
 875
 876         if (configured_name)
 877                 output->base.name = strdup(configured_name);
 878
 879         width_mm = width * c->screen->width_in_millimeters /
 880                 c->screen->width_in_pixels;
 881         height_mm = height * c->screen->height_in_millimeters /
 882                 c->screen->height_in_pixels;
 883         weston_output_init(&output->base, &c->base,
 884                            x, y, width_mm, height_mm, transform, scale);
 885
 886         if (c->use_pixman) {
 887                 if (x11_output_init_shm(c, output,
 888                                         output->mode.width,
 889                                         output->mode.height) < 0)
 890                         return NULL;
 891                 if (pixman_renderer_output_create(&output->base) < 0) {
 892                         x11_output_deinit_shm(c, output);
 893                         return NULL;
 894                 }
 895         } else {
 896                 ret = gl_renderer->output_create(&output->base,
 897                                                  (EGLNativeWindowType) output->window,
 898                                                  gl_renderer->opaque_attribs,
 899                                                  NULL);
 900                 if (ret < 0)
 901                         return NULL;
 902         }
 903
 904         loop = wl_display_get_event_loop(c->base.wl_display);
 905         output->finish_frame_timer =
 906                 wl_event_loop_add_timer(loop, finish_frame_handler, output);
 907
 908         wl_list_insert(c->base.output_list.prev, &output->base.link);
 909
 910         weston_log("x11 output %dx%d, window id %d\n",
 911                    width, height, output->window);
 912
 913         return output;
 914 }
 915
 916 static struct x11_output *
 917 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 918 {
 919         struct x11_output *output;
 920
 921         wl_list_for_each(output, &c->base.output_list, base.link) {
 922                 if (output->window == window)
 923                         return output;
 924         }
 925
 926         assert(0);
 927 }
 928
 929 static void
 930 x11_compositor_delete_window(struct x11_compositor *c, xcb_window_t window)
 931 {
 932         struct x11_output *output;
 933
 934         output = x11_compositor_find_output(c, window);
 935         x11_output_destroy(&output->base);
 936
 937         xcb_flush(c->conn);
 938
 939         if (wl_list_empty(&c->base.output_list))
 940                 wl_display_terminate(c->base.wl_display);
 941 }
 942
 943 #ifdef HAVE_XCB_XKB
 944 static void
 945 update_xkb_state(struct x11_compositor *c, xcb_xkb_state_notify_event_t *state)
 946 {
 947         xkb_state_update_mask(c->core_seat.keyboard->xkb_state.state,
 948                               get_xkb_mod_mask(c, state->baseMods),
 949                               get_xkb_mod_mask(c, state->latchedMods),
 950                               get_xkb_mod_mask(c, state->lockedMods),
 951                               0,
 952                               0,
 953                               state->group);
 954
 955         notify_modifiers(&c->core_seat,
 956                          wl_display_next_serial(c->base.wl_display));
 957 }
 958 #endif
 959
 960 /**
 961  * This is monumentally unpleasant.  If we don't have XCB-XKB bindings,
 962  * the best we can do (given that XCB also lacks XI2 support), is to take
 963  * the state from the core key events.  Unfortunately that only gives us
 964  * the effective (i.e. union of depressed/latched/locked) state, and we
 965  * need the granularity.
 966  *
 967  * So we still update the state with every key event we see, but also use
 968  * the state field from X11 events as a mask so we don't get any stuck
 969  * modifiers.
 970  */
 971 static void
 972 update_xkb_state_from_core(struct x11_compositor *c, uint16_t x11_mask)
 973 {
 974         uint32_t mask = get_xkb_mod_mask(c, x11_mask);
 975         struct weston_keyboard *keyboard = c->core_seat.keyboard;
 976
 977         xkb_state_update_mask(c->core_seat.keyboard->xkb_state.state,
 978                               keyboard->modifiers.mods_depressed & mask,
 979                               keyboard->modifiers.mods_latched & mask,
 980                               keyboard->modifiers.mods_locked & mask,
 981                               0,
 982                               0,
 983                               (x11_mask >> 13) & 3);
 984         notify_modifiers(&c->core_seat,
 985                          wl_display_next_serial(c->base.wl_display));
 986 }
 987
 988 static void
 989 x11_compositor_deliver_button_event(struct x11_compositor *c,
 990                                     xcb_generic_event_t *event, int state)
 991 {
 992         xcb_button_press_event_t *button_event =
 993                 (xcb_button_press_event_t *) event;
 994         uint32_t button;
 995         struct x11_output *output;
 996
 997         output = x11_compositor_find_output(c, button_event->event);
 998
 999         if (state)
1000                 xcb_grab_pointer(c->conn, 0, output->window,
1001                                  XCB_EVENT_MASK_BUTTON_PRESS |
1002                                  XCB_EVENT_MASK_BUTTON_RELEASE |
1003                                  XCB_EVENT_MASK_POINTER_MOTION |
1004                                  XCB_EVENT_MASK_ENTER_WINDOW |
1005                                  XCB_EVENT_MASK_LEAVE_WINDOW,
1006                                  XCB_GRAB_MODE_ASYNC,
1007                                  XCB_GRAB_MODE_ASYNC,
1008                                  output->window, XCB_CURSOR_NONE,
1009                                  button_event->time);
1010         else
1011                 xcb_ungrab_pointer(c->conn, button_event->time);
1012
1013         if (!c->has_xkb)
1014                 update_xkb_state_from_core(c, button_event->state);
1015
1016         switch (button_event->detail) {
1017         default:
1018                 button = button_event->detail + BTN_LEFT - 1;
1019                 break;
1020         case 2:
1021                 button = BTN_MIDDLE;
1022                 break;
1023         case 3:
1024                 button = BTN_RIGHT;
1025                 break;
1026         case 4:
1027                 /* Axis are measured in pixels, but the xcb events are discrete
1028                  * steps. Therefore move the axis by some pixels every step. */
1029                 if (state)
1030                         notify_axis(&c->core_seat,
1031                                     weston_compositor_get_time(),
1032                                     WL_POINTER_AXIS_VERTICAL_SCROLL,
1033                                     -DEFAULT_AXIS_STEP_DISTANCE);
1034                 return;
1035         case 5:
1036                 if (state)
1037                         notify_axis(&c->core_seat,
1038                                     weston_compositor_get_time(),
1039                                     WL_POINTER_AXIS_VERTICAL_SCROLL,
1040                                     DEFAULT_AXIS_STEP_DISTANCE);
1041                 return;
1042         case 6:
1043                 if (state)
1044                         notify_axis(&c->core_seat,
1045                                     weston_compositor_get_time(),
1046                                     WL_POINTER_AXIS_HORIZONTAL_SCROLL,
1047                                     -DEFAULT_AXIS_STEP_DISTANCE);
1048                 return;
1049         case 7:
1050                 if (state)
1051                         notify_axis(&c->core_seat,
1052                                     weston_compositor_get_time(),
1053                                     WL_POINTER_AXIS_HORIZONTAL_SCROLL,
1054                                     DEFAULT_AXIS_STEP_DISTANCE);
1055                 return;
1056         }
1057
1058         notify_button(&c->core_seat,
1059                       weston_compositor_get_time(), button,
1060                       state ? WL_POINTER_BUTTON_STATE_PRESSED :
1061                               WL_POINTER_BUTTON_STATE_RELEASED);
1062 }
1063
1064 static void
1065 x11_compositor_deliver_motion_event(struct x11_compositor *c,
1066                                         xcb_generic_event_t *event)
1067 {
1068         struct x11_output *output;
1069         wl_fixed_t x, y;
1070         xcb_motion_notify_event_t *motion_notify =
1071                         (xcb_motion_notify_event_t *) event;
1072
1073         if (!c->has_xkb)
1074                 update_xkb_state_from_core(c, motion_notify->state);
1075         output = x11_compositor_find_output(c, motion_notify->event);
1076         weston_output_transform_coordinate(&output->base,
1077                                            wl_fixed_from_int(motion_notify->event_x),
1078                                            wl_fixed_from_int(motion_notify->event_y),
1079                                            &x, &y);
1080
1081         notify_motion(&c->core_seat, weston_compositor_get_time(),
1082                       x - c->prev_x, y - c->prev_y);
1083
1084         c->prev_x = x;
1085         c->prev_y = y;
1086 }
1087
1088 static void
1089 x11_compositor_deliver_enter_event(struct x11_compositor *c,
1090                                         xcb_generic_event_t *event)
1091 {
1092         struct x11_output *output;
1093         wl_fixed_t x, y;
1094
1095         xcb_enter_notify_event_t *enter_notify =
1096                         (xcb_enter_notify_event_t *) event;
1097         if (enter_notify->state >= Button1Mask)
1098                 return;
1099         if (!c->has_xkb)
1100                 update_xkb_state_from_core(c, enter_notify->state);
1101         output = x11_compositor_find_output(c, enter_notify->event);
1102         weston_output_transform_coordinate(&output->base,
1103                                            wl_fixed_from_int(enter_notify->event_x),
1104                                            wl_fixed_from_int(enter_notify->event_y), &x, &y);
1105
1106         notify_pointer_focus(&c->core_seat, &output->base, x, y);
1107
1108         c->prev_x = x;
1109         c->prev_y = y;
1110 }
1111
1112 static int
1113 x11_compositor_next_event(struct x11_compositor *c,
1114                           xcb_generic_event_t **event, uint32_t mask)
1115 {
1116         if (mask & WL_EVENT_READABLE) {
1117                 *event = xcb_poll_for_event(c->conn);
1118         } else {
1119 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
1120                 *event = xcb_poll_for_queued_event(c->conn);
1121 #else
1122                 *event = xcb_poll_for_event(c->conn);
1123 #endif
1124         }
1125
1126         return *event != NULL;
1127 }
1128
1129 static int
1130 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
1131 {
1132         struct x11_compositor *c = data;
1133         struct x11_output *output;
1134         xcb_generic_event_t *event, *prev;
1135         xcb_client_message_event_t *client_message;
1136         xcb_enter_notify_event_t *enter_notify;
1137         xcb_key_press_event_t *key_press, *key_release;
1138         xcb_keymap_notify_event_t *keymap_notify;
1139         xcb_focus_in_event_t *focus_in;
1140         xcb_expose_event_t *expose;
1141         xcb_atom_t atom;
1142         xcb_window_t window;
1143         uint32_t *k;
1144         uint32_t i, set;
1145         uint8_t response_type;
1146         int count;
1147
1148         prev = NULL;
1149         count = 0;
1150         while (x11_compositor_next_event(c, &event, mask)) {
1151                 response_type = event->response_type & ~0x80;
1152
1153                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
1154                 case XCB_KEY_RELEASE:
1155                         /* Suppress key repeat events; this is only used if we
1156                          * don't have XCB XKB support. */
1157                         key_release = (xcb_key_press_event_t *) prev;
1158                         key_press = (xcb_key_press_event_t *) event;
1159                         if (response_type == XCB_KEY_PRESS &&
1160                             key_release->time == key_press->time &&
1161                             key_release->detail == key_press->detail) {
1162                                 /* Don't deliver the held key release
1163                                  * event or the new key press event. */
1164                                 free(event);
1165                                 free(prev);
1166                                 prev = NULL;
1167                                 continue;
1168                         } else {
1169                                 /* Deliver the held key release now
1170                                  * and fall through and handle the new
1171                                  * event below. */
1172                                 update_xkb_state_from_core(c, key_release->state);
1173                                 notify_key(&c->core_seat,
1174                                            weston_compositor_get_time(),
1175                                            key_release->detail - 8,
1176                                            WL_KEYBOARD_KEY_STATE_RELEASED,
1177                                            STATE_UPDATE_AUTOMATIC);
1178                                 free(prev);
1179                                 prev = NULL;
1180                                 break;
1181                         }
1182
1183                 case XCB_FOCUS_IN:
1184                         assert(response_type == XCB_KEYMAP_NOTIFY);
1185                         keymap_notify = (xcb_keymap_notify_event_t *) event;
1186                         c->keys.size = 0;
1187                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
1188                                 set = keymap_notify->keys[i >> 3] &
1189                                         (1 << (i & 7));
1190                                 if (set) {
1191                                         k = wl_array_add(&c->keys, sizeof *k);
1192                                         *k = i;
1193                                 }
1194                         }
1195
1196                         /* Unfortunately the state only comes with the enter
1197                          * event, rather than with the focus event.  I'm not
1198                          * sure of the exact semantics around it and whether
1199                          * we can ensure that we get both? */
1200                         notify_keyboard_focus_in(&c->core_seat, &c->keys,
1201                                                  STATE_UPDATE_AUTOMATIC);
1202
1203                         free(prev);
1204                         prev = NULL;
1205                         break;
1206
1207                 default:
1208                         /* No previous event held */
1209                         break;
1210                 }
1211
1212                 switch (response_type) {
1213                 case XCB_KEY_PRESS:
1214                         key_press = (xcb_key_press_event_t *) event;
1215                         if (!c->has_xkb)
1216                                 update_xkb_state_from_core(c, key_press->state);
1217                         notify_key(&c->core_seat,
1218                                    weston_compositor_get_time(),
1219                                    key_press->detail - 8,
1220                                    WL_KEYBOARD_KEY_STATE_PRESSED,
1221                                    c->has_xkb ? STATE_UPDATE_NONE :
1222                                                 STATE_UPDATE_AUTOMATIC);
1223                         break;
1224                 case XCB_KEY_RELEASE:
1225                         /* If we don't have XKB, we need to use the lame
1226                          * autorepeat detection above. */
1227                         if (!c->has_xkb) {
1228                                 prev = event;
1229                                 break;
1230                         }
1231                         key_release = (xcb_key_press_event_t *) event;
1232                         notify_key(&c->core_seat,
1233                                    weston_compositor_get_time(),
1234                                    key_release->detail - 8,
1235                                    WL_KEYBOARD_KEY_STATE_RELEASED,
1236                                    STATE_UPDATE_NONE);
1237                         break;
1238                 case XCB_BUTTON_PRESS:
1239                         x11_compositor_deliver_button_event(c, event, 1);
1240                         break;
1241                 case XCB_BUTTON_RELEASE:
1242                         x11_compositor_deliver_button_event(c, event, 0);
1243                         break;
1244                 case XCB_MOTION_NOTIFY:
1245                         x11_compositor_deliver_motion_event(c, event);
1246                         break;
1247
1248                 case XCB_EXPOSE:
1249                         expose = (xcb_expose_event_t *) event;
1250                         output = x11_compositor_find_output(c, expose->window);
1251                         weston_output_damage(&output->base);
1252                         weston_output_schedule_repaint(&output->base);
1253                         break;
1254
1255                 case XCB_ENTER_NOTIFY:
1256                         x11_compositor_deliver_enter_event(c, event);
1257                         break;
1258
1259                 case XCB_LEAVE_NOTIFY:
1260                         enter_notify = (xcb_enter_notify_event_t *) event;
1261                         if (enter_notify->state >= Button1Mask)
1262                                 break;
1263                         if (!c->has_xkb)
1264                                 update_xkb_state_from_core(c, enter_notify->state);
1265                         notify_pointer_focus(&c->core_seat, NULL, 0, 0);
1266                         break;
1267
1268                 case XCB_CLIENT_MESSAGE:
1269                         client_message = (xcb_client_message_event_t *) event;
1270                         atom = client_message->data.data32[0];
1271                         window = client_message->window;
1272                         if (atom == c->atom.wm_delete_window)
1273                                 x11_compositor_delete_window(c, window);
1274                         break;
1275
1276                 case XCB_FOCUS_IN:
1277                         focus_in = (xcb_focus_in_event_t *) event;
1278                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
1279                                 break;
1280
1281                         prev = event;
1282                         break;
1283
1284                 case XCB_FOCUS_OUT:
1285                         focus_in = (xcb_focus_in_event_t *) event;
1286                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
1287                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
1288                                 break;
1289                         notify_keyboard_focus_out(&c->core_seat);
1290                         break;
1291
1292                 default:
1293                         break;
1294                 }
1295
1296 #ifdef HAVE_XCB_XKB
1297                 if (c->has_xkb) {
1298                         if (response_type == c->xkb_event_base) {
1299                                 xcb_xkb_state_notify_event_t *state =
1300                                         (xcb_xkb_state_notify_event_t *) event;
1301                                 if (state->xkbType == XCB_XKB_STATE_NOTIFY)
1302                                         update_xkb_state(c, state);
1303                         } else if (response_type == XCB_PROPERTY_NOTIFY) {
1304                                 xcb_property_notify_event_t *prop_notify =
1305                                         (xcb_property_notify_event_t *) event;
1306                                 if (prop_notify->window == c->screen->root &&
1307                                     prop_notify->atom == c->atom.xkb_names &&
1308                                     prop_notify->state == XCB_PROPERTY_NEW_VALUE)
1309                                         update_xkb_keymap(c);
1310                         }
1311                 }
1312 #endif
1313
1314                 count++;
1315                 if (prev != event)
1316                         free (event);
1317         }
1318
1319         switch (prev ? prev->response_type & ~0x80 : 0x80) {
1320         case XCB_KEY_RELEASE:
1321                 key_release = (xcb_key_press_event_t *) prev;
1322                 update_xkb_state_from_core(c, key_release->state);
1323                 notify_key(&c->core_seat,
1324                            weston_compositor_get_time(),
1325                            key_release->detail - 8,
1326                            WL_KEYBOARD_KEY_STATE_RELEASED,
1327                            STATE_UPDATE_AUTOMATIC);
1328                 free(prev);
1329                 prev = NULL;
1330                 break;
1331         default:
1332                 break;
1333         }
1334
1335         return count;
1336 }
1337
1338 #define F(field) offsetof(struct x11_compositor, field)
1339
1340 static void
1341 x11_compositor_get_resources(struct x11_compositor *c)
1342 {
1343         static const struct { const char *name; int offset; } atoms[] = {
1344                 { "WM_PROTOCOLS",       F(atom.wm_protocols) },
1345                 { "WM_NORMAL_HINTS",    F(atom.wm_normal_hints) },
1346                 { "WM_SIZE_HINTS",      F(atom.wm_size_hints) },
1347                 { "WM_DELETE_WINDOW",   F(atom.wm_delete_window) },
1348                 { "WM_CLASS",           F(atom.wm_class) },
1349                 { "_NET_WM_NAME",       F(atom.net_wm_name) },
1350                 { "_NET_WM_ICON",       F(atom.net_wm_icon) },
1351                 { "_NET_WM_STATE",      F(atom.net_wm_state) },
1352                 { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
1353                 { "_NET_SUPPORTING_WM_CHECK",
1354                                         F(atom.net_supporting_wm_check) },
1355                 { "_NET_SUPPORTED",     F(atom.net_supported) },
1356                 { "STRING",             F(atom.string) },
1357                 { "UTF8_STRING",        F(atom.utf8_string) },
1358                 { "CARDINAL",           F(atom.cardinal) },
1359                 { "_XKB_RULES_NAMES",   F(atom.xkb_names) },
1360         };
1361
1362         xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
1363         xcb_intern_atom_reply_t *reply;
1364         xcb_pixmap_t pixmap;
1365         xcb_gc_t gc;
1366         unsigned int i;
1367         uint8_t data[] = { 0, 0, 0, 0 };
1368
1369         for (i = 0; i < ARRAY_LENGTH(atoms); i++)
1370                 cookies[i] = xcb_intern_atom (c->conn, 0,
1371                                               strlen(atoms[i].name),
1372                                               atoms[i].name);
1373
1374         for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
1375                 reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
1376                 *(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
1377                 free(reply);
1378         }
1379
1380         pixmap = xcb_generate_id(c->conn);
1381         gc = xcb_generate_id(c->conn);
1382         xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
1383         xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
1384         xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
1385                       pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
1386         c->null_cursor = xcb_generate_id(c->conn);
1387         xcb_create_cursor (c->conn, c->null_cursor,
1388                            pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
1389         xcb_free_gc(c->conn, gc);
1390         xcb_free_pixmap(c->conn, pixmap);
1391 }
1392
1393 static void
1394 x11_compositor_get_wm_info(struct x11_compositor *c)
1395 {
1396         xcb_get_property_cookie_t cookie;
1397         xcb_get_property_reply_t *reply;
1398         xcb_atom_t *atom;
1399         unsigned int i;
1400
1401         cookie = xcb_get_property(c->conn, 0, c->screen->root,
1402                                   c->atom.net_supported,
1403                                   XCB_ATOM_ATOM, 0, 1024);
1404         reply = xcb_get_property_reply(c->conn, cookie, NULL);
1405         if (reply == NULL)
1406                 return;
1407
1408         atom = (xcb_atom_t *) xcb_get_property_value(reply);
1409
1410         for (i = 0; i < reply->value_len; i++) {
1411                 if (atom[i] == c->atom.net_wm_state_fullscreen)
1412                         c->has_net_wm_state_fullscreen = 1;
1413         }
1414 }
1415
1416 static void
1417 x11_restore(struct weston_compositor *ec)
1418 {
1419 }
1420
1421 static void
1422 x11_destroy(struct weston_compositor *ec)
1423 {
1424         struct x11_compositor *compositor = (struct x11_compositor *)ec;
1425
1426         wl_event_source_remove(compositor->xcb_source);
1427         x11_input_destroy(compositor);
1428
1429         weston_compositor_shutdown(ec); /* destroys outputs, too */
1430
1431         XCloseDisplay(compositor->dpy);
1432         free(ec);
1433 }
1434
1435 static uint32_t
1436 parse_transform(const char *transform, const char *output_name)
1437 {
1438         static const struct { const char *name; uint32_t token; } names[] = {
1439                 { "normal",     WL_OUTPUT_TRANSFORM_NORMAL },
1440                 { "90",         WL_OUTPUT_TRANSFORM_90 },
1441                 { "180",        WL_OUTPUT_TRANSFORM_180 },
1442                 { "270",        WL_OUTPUT_TRANSFORM_270 },
1443                 { "flipped",    WL_OUTPUT_TRANSFORM_FLIPPED },
1444                 { "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
1445                 { "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
1446                 { "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
1447         };
1448         unsigned int i;
1449
1450         for (i = 0; i < ARRAY_LENGTH(names); i++)
1451                 if (strcmp(names[i].name, transform) == 0)
1452                         return names[i].token;
1453
1454         weston_log("Invalid transform \"%s\" for output %s\n",
1455                    transform, output_name);
1456
1457         return WL_OUTPUT_TRANSFORM_NORMAL;
1458 }
1459
1460 static int
1461 init_gl_renderer(struct x11_compositor *c)
1462 {
1463         int ret;
1464
1465         gl_renderer = weston_load_module("gl-renderer.so",
1466                                          "gl_renderer_interface");
1467         if (!gl_renderer)
1468                 return -1;
1469
1470         ret = gl_renderer->create(&c->base, (EGLNativeDisplayType) c->dpy,
1471                                   gl_renderer->opaque_attribs, NULL);
1472
1473         return ret;
1474 }
1475 static struct weston_compositor *
1476 x11_compositor_create(struct wl_display *display,
1477                       int fullscreen,
1478                       int no_input,
1479                       int use_pixman,
1480                       int *argc, char *argv[],
1481                       struct weston_config *config)
1482 {
1483         struct x11_compositor *c;
1484         struct x11_output *output;
1485         struct weston_config_section *section;
1486         xcb_screen_iterator_t s;
1487         int i, x = 0, output_count = 0;
1488         int width, height, scale, count;
1489         const char *section_name;
1490         char *name, *t, *mode;
1491         uint32_t transform;
1492
1493         weston_log("initializing x11 backend\n");
1494
1495         c = zalloc(sizeof *c);
1496         if (c == NULL)
1497                 return NULL;
1498
1499         if (weston_compositor_init(&c->base, display, argc, argv, config) < 0)
1500                 goto err_free;
1501
1502         c->dpy = XOpenDisplay(NULL);
1503         if (c->dpy == NULL)
1504                 goto err_free;
1505
1506         c->conn = XGetXCBConnection(c->dpy);
1507         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
1508
1509         if (xcb_connection_has_error(c->conn))
1510                 goto err_xdisplay;
1511
1512         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
1513         c->screen = s.data;
1514         wl_array_init(&c->keys);
1515
1516         x11_compositor_get_resources(c);
1517         x11_compositor_get_wm_info(c);
1518
1519         if (!c->has_net_wm_state_fullscreen && fullscreen) {
1520                 weston_log("Can not fullscreen without window manager support"
1521                            "(need _NET_WM_STATE_FULLSCREEN)\n");
1522                 fullscreen = 0;
1523         }
1524
1525         c->base.wl_display = display;
1526         c->use_pixman = use_pixman;
1527         if (c->use_pixman) {
1528                 if (pixman_renderer_init(&c->base) < 0)
1529                         goto err_xdisplay;
1530         }
1531         else if (init_gl_renderer(c) < 0) {
1532                 goto err_xdisplay;
1533         }
1534         weston_log("Using %s renderer\n", use_pixman ? "pixman" : "gl");
1535
1536         c->base.destroy = x11_destroy;
1537         c->base.restore = x11_restore;
1538
1539         if (x11_input_create(c, no_input) < 0)
1540                 goto err_renderer;
1541
1542         width = option_width ? option_width : 1024;
1543         height = option_height ? option_height : 640;
1544         scale = option_scale ? option_scale : 1;
1545         count = option_count ? option_count : 1;
1546
1547         section = NULL;
1548         while (weston_config_next_section(c->base.config,
1549                                           &section, &section_name)) {
1550                 if (strcmp(section_name, "output") != 0)
1551                         continue;
1552                 weston_config_section_get_string(section, "name", &name, NULL);
1553                 if (name == NULL || name[0] != 'X') {
1554                         free(name);
1555                         continue;
1556                 }
1557
1558                 weston_config_section_get_string(section,
1559                                                  "mode", &mode, "1024x600");
1560                 if (sscanf(mode, "%dx%d", &width, &height) != 2) {
1561                         weston_log("Invalid mode \"%s\" for output %s\n",
1562                                    mode, name);
1563                         width = 1024;
1564                         height = 600;
1565                 }
1566                 free(mode);
1567
1568                 if (option_width)
1569                         width = option_width;
1570                 if (option_height)
1571                         height = option_height;
1572
1573                 weston_config_section_get_int(section, "scale", &scale, 1);
1574                 if (option_scale)
1575                         scale = option_scale;
1576
1577                 weston_config_section_get_string(section,
1578                                                  "transform", &t, "normal");
1579                 transform = parse_transform(t, name);
1580                 free(t);
1581
1582                 output = x11_compositor_create_output(c, x, 0,
1583                                                       width, height,
1584                                                       fullscreen, no_input,
1585                                                       name, transform, scale);
1586                 free(name);
1587                 if (output == NULL)
1588                         goto err_x11_input;
1589
1590                 x = pixman_region32_extents(&output->base.region)->x2;
1591
1592                 output_count++;
1593                 if (option_count && output_count >= option_count)
1594                         break;
1595         }
1596
1597         for (i = output_count; i < count; i++) {
1598                 output = x11_compositor_create_output(c, x, 0, width, height,
1599                                                       fullscreen, no_input, NULL,
1600                                                       WL_OUTPUT_TRANSFORM_NORMAL, scale);
1601                 if (output == NULL)
1602                         goto err_x11_input;
1603                 x = pixman_region32_extents(&output->base.region)->x2;
1604         }
1605
1606         c->xcb_source =
1607                 wl_event_loop_add_fd(c->base.input_loop,
1608                                      xcb_get_file_descriptor(c->conn),
1609                                      WL_EVENT_READABLE,
1610                                      x11_compositor_handle_event, c);
1611         wl_event_source_check(c->xcb_source);
1612
1613         return &c->base;
1614
1615 err_x11_input:
1616         x11_input_destroy(c);
1617 err_renderer:
1618         c->base.renderer->destroy(&c->base);
1619 err_xdisplay:
1620         XCloseDisplay(c->dpy);
1621 err_free:
1622         free(c);
1623         return NULL;
1624 }
1625
1626 WL_EXPORT struct weston_compositor *
1627 backend_init(struct wl_display *display, int *argc, char *argv[],
1628              struct weston_config *config)
1629 {
1630         int fullscreen = 0;
1631         int no_input = 0;
1632         int use_pixman = 0;
1633
1634         const struct weston_option x11_options[] = {
1635                 { WESTON_OPTION_INTEGER, "width", 0, &option_width },
1636                 { WESTON_OPTION_INTEGER, "height", 0, &option_height },
1637                 { WESTON_OPTION_INTEGER, "scale", 0, &option_scale },
1638                 { WESTON_OPTION_BOOLEAN, "fullscreen", 'f', &fullscreen },
1639                 { WESTON_OPTION_INTEGER, "output-count", 0, &option_count },
1640                 { WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
1641                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
1642         };
1643
1644         parse_options(x11_options, ARRAY_LENGTH(x11_options), argc, argv);
1645
1646         return x11_compositor_create(display,
1647                                      fullscreen,
1648                                      no_input,
1649                                      use_pixman,
1650                                      argc, argv, config);
1651 }