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         xkb_keymap_unref(keymap);
 326
 327         x11_compositor_setup_xkb(c);
 328
 329         return 0;
 330 }
 331
 332 static void
 333 x11_input_destroy(struct x11_compositor *compositor)
 334 {
 335         weston_seat_release(&compositor->core_seat);
 336 }
 337
 338 static void
 339 x11_output_start_repaint_loop(struct weston_output *output)
 340 {
 341         uint32_t msec;
 342         struct timeval tv;
 343
 344         gettimeofday(&tv, NULL);
 345         msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
 346         weston_output_finish_frame(output, msec);
 347 }
 348
 349 static int
 350 x11_output_repaint_gl(struct weston_output *output_base,
 351                       pixman_region32_t *damage)
 352 {
 353         struct x11_output *output = (struct x11_output *)output_base;
 354         struct weston_compositor *ec = output->base.compositor;
 355
 356         ec->renderer->repaint_output(output_base, damage);
 357
 358         pixman_region32_subtract(&ec->primary_plane.damage,
 359                                  &ec->primary_plane.damage, damage);
 360
 361         wl_event_source_timer_update(output->finish_frame_timer, 10);
 362         return 0;
 363 }
 364
 365 static void
 366 set_clip_for_output(struct weston_output *output_base, pixman_region32_t *region)
 367 {
 368         struct x11_output *output = (struct x11_output *)output_base;
 369         struct weston_compositor *ec = output->base.compositor;
 370         struct x11_compositor *c = (struct x11_compositor *)ec;
 371         pixman_region32_t transformed_region;
 372         pixman_box32_t *rects;
 373         xcb_rectangle_t *output_rects;
 374         xcb_void_cookie_t cookie;
 375         int nrects, i;
 376         xcb_generic_error_t *err;
 377
 378         pixman_region32_init(&transformed_region);
 379         pixman_region32_copy(&transformed_region, region);
 380         pixman_region32_translate(&transformed_region,
 381                                   -output_base->x, -output_base->y);
 382         weston_transformed_region(output_base->width, output_base->height,
 383                                   output_base->transform,
 384                                   output_base->current_scale,
 385                                   &transformed_region, &transformed_region);
 386
 387         rects = pixman_region32_rectangles(&transformed_region, &nrects);
 388         output_rects = calloc(nrects, sizeof(xcb_rectangle_t));
 389
 390         if (output_rects == NULL) {
 391                 pixman_region32_fini(&transformed_region);
 392                 return;
 393         }
 394
 395         for (i = 0; i < nrects; i++) {
 396                 output_rects[i].x = rects[i].x1;
 397                 output_rects[i].y = rects[i].y1;
 398                 output_rects[i].width = rects[i].x2 - rects[i].x1;
 399                 output_rects[i].height = rects[i].y2 - rects[i].y1;
 400         }
 401
 402         pixman_region32_fini(&transformed_region);
 403
 404         cookie = xcb_set_clip_rectangles_checked(c->conn, XCB_CLIP_ORDERING_UNSORTED,
 405                                         output->gc,
 406                                         0, 0, nrects,
 407                                         output_rects);
 408         err = xcb_request_check(c->conn, cookie);
 409         if (err != NULL) {
 410                 weston_log("Failed to set clip rects, err: %d\n", err->error_code);
 411                 free(err);
 412         }
 413         free(output_rects);
 414 }
 415
 416
 417 static int
 418 x11_output_repaint_shm(struct weston_output *output_base,
 419                        pixman_region32_t *damage)
 420 {
 421         struct x11_output *output = (struct x11_output *)output_base;
 422         struct weston_compositor *ec = output->base.compositor;
 423         struct x11_compositor *c = (struct x11_compositor *)ec;
 424         xcb_void_cookie_t cookie;
 425         xcb_generic_error_t *err;
 426
 427         pixman_renderer_output_set_buffer(output_base, output->hw_surface);
 428         ec->renderer->repaint_output(output_base, damage);
 429
 430         pixman_region32_subtract(&ec->primary_plane.damage,
 431                                  &ec->primary_plane.damage, damage);
 432         set_clip_for_output(output_base, damage);
 433         cookie = xcb_shm_put_image_checked(c->conn, output->window, output->gc,
 434                                         pixman_image_get_width(output->hw_surface),
 435                                         pixman_image_get_height(output->hw_surface),
 436                                         0, 0,
 437                                         pixman_image_get_width(output->hw_surface),
 438                                         pixman_image_get_height(output->hw_surface),
 439                                         0, 0, output->depth, XCB_IMAGE_FORMAT_Z_PIXMAP,
 440                                         0, output->segment, 0);
 441         err = xcb_request_check(c->conn, cookie);
 442         if (err != NULL) {
 443                 weston_log("Failed to put shm image, err: %d\n", err->error_code);
 444                 free(err);
 445         }
 446
 447         wl_event_source_timer_update(output->finish_frame_timer, 10);
 448         return 0;
 449 }
 450
 451 static int
 452 finish_frame_handler(void *data)
 453 {
 454         struct x11_output *output = data;
 455
 456         x11_output_start_repaint_loop(&output->base);
 457
 458         return 1;
 459 }
 460
 461 static void
 462 x11_output_deinit_shm(struct x11_compositor *c, struct x11_output *output)
 463 {
 464         xcb_void_cookie_t cookie;
 465         xcb_generic_error_t *err;
 466         xcb_free_gc(c->conn, output->gc);
 467
 468         pixman_image_unref(output->hw_surface);
 469         output->hw_surface = NULL;
 470         cookie = xcb_shm_detach_checked(c->conn, output->segment);
 471         err = xcb_request_check(c->conn, cookie);
 472         if (err) {
 473                 weston_log("xcb_shm_detach failed, error %d\n", err->error_code);
 474                 free(err);
 475         }
 476         shmdt(output->buf);
 477 }
 478
 479 static void
 480 x11_output_destroy(struct weston_output *output_base)
 481 {
 482         struct x11_output *output = (struct x11_output *)output_base;
 483         struct x11_compositor *compositor =
 484                 (struct x11_compositor *)output->base.compositor;
 485
 486         wl_event_source_remove(output->finish_frame_timer);
 487
 488         if (compositor->use_pixman) {
 489                 pixman_renderer_output_destroy(output_base);
 490                 x11_output_deinit_shm(compositor, output);
 491         } else
 492                 gl_renderer->output_destroy(output_base);
 493
 494         xcb_destroy_window(compositor->conn, output->window);
 495
 496         weston_output_destroy(&output->base);
 497
 498         free(output);
 499 }
 500
 501 static void
 502 x11_output_set_wm_protocols(struct x11_compositor *c,
 503                             struct x11_output *output)
 504 {
 505         xcb_atom_t list[1];
 506
 507         list[0] = c->atom.wm_delete_window;
 508         xcb_change_property (c->conn,
 509                              XCB_PROP_MODE_REPLACE,
 510                              output->window,
 511                              c->atom.wm_protocols,
 512                              XCB_ATOM_ATOM,
 513                              32,
 514                              ARRAY_LENGTH(list),
 515                              list);
 516 }
 517
 518 struct wm_normal_hints {
 519         uint32_t flags;
 520         uint32_t pad[4];
 521         int32_t min_width, min_height;
 522         int32_t max_width, max_height;
 523         int32_t width_inc, height_inc;
 524         int32_t min_aspect_x, min_aspect_y;
 525         int32_t max_aspect_x, max_aspect_y;
 526         int32_t base_width, base_height;
 527         int32_t win_gravity;
 528 };
 529
 530 #define WM_NORMAL_HINTS_MIN_SIZE        16
 531 #define WM_NORMAL_HINTS_MAX_SIZE        32
 532
 533 static void
 534 x11_output_set_icon(struct x11_compositor *c,
 535                     struct x11_output *output, const char *filename)
 536 {
 537         uint32_t *icon;
 538         int32_t width, height;
 539         pixman_image_t *image;
 540
 541         image = load_image(filename);
 542         if (!image)
 543                 return;
 544         width = pixman_image_get_width(image);
 545         height = pixman_image_get_height(image);
 546         icon = malloc(width * height * 4 + 8);
 547         if (!icon) {
 548                 pixman_image_unref(image);
 549                 return;
 550         }
 551
 552         icon[0] = width;
 553         icon[1] = height;
 554         memcpy(icon + 2, pixman_image_get_data(image), width * height * 4);
 555         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 556                             c->atom.net_wm_icon, c->atom.cardinal, 32,
 557                             width * height + 2, icon);
 558         free(icon);
 559         pixman_image_unref(image);
 560 }
 561
 562 static void
 563 x11_output_wait_for_map(struct x11_compositor *c, struct x11_output *output)
 564 {
 565         xcb_map_notify_event_t *map_notify;
 566         xcb_configure_notify_event_t *configure_notify;
 567         xcb_generic_event_t *event;
 568         int mapped = 0, configured = 0;
 569         uint8_t response_type;
 570
 571         /* This isn't the nicest way to do this.  Ideally, we could
 572          * just go back to the main loop and once we get the configure
 573          * notify, we add the output to the compositor.  While we do
 574          * support output hotplug, we can't start up with no outputs.
 575          * We could add the output and then resize once we get the
 576          * configure notify, but we don't want to start up and
 577          * immediately resize the output.
 578          *
 579          * Also, some window managers don't give us our final
 580          * fullscreen size before map_notify, so if we don't get a
 581          * configure_notify before map_notify, we just wait for the
 582          * first one and hope that's our size. */
 583
 584         xcb_flush(c->conn);
 585
 586         while (!mapped || !configured) {
 587                 event = xcb_wait_for_event(c->conn);
 588                 response_type = event->response_type & ~0x80;
 589
 590                 switch (response_type) {
 591                 case XCB_MAP_NOTIFY:
 592                         map_notify = (xcb_map_notify_event_t *) event;
 593                         if (map_notify->window == output->window)
 594                                 mapped = 1;
 595                         break;
 596
 597                 case XCB_CONFIGURE_NOTIFY:
 598                         configure_notify =
 599                                 (xcb_configure_notify_event_t *) event;
 600
 601
 602                         if (configure_notify->width % output->scale != 0 ||
 603                             configure_notify->height % output->scale != 0)
 604                                 weston_log("Resolution is not a multiple of screen size, rounding\n");
 605                         output->mode.width = configure_notify->width;
 606                         output->mode.height = configure_notify->height;
 607                         configured = 1;
 608                         break;
 609                 }
 610         }
 611 }
 612
 613 static xcb_visualtype_t *
 614 find_visual_by_id(xcb_screen_t *screen,
 615                    xcb_visualid_t id)
 616 {
 617         xcb_depth_iterator_t i;
 618         xcb_visualtype_iterator_t j;
 619         for (i = xcb_screen_allowed_depths_iterator(screen);
 620              i.rem;
 621              xcb_depth_next(&i)) {
 622                 for (j = xcb_depth_visuals_iterator(i.data);
 623                      j.rem;
 624                      xcb_visualtype_next(&j)) {
 625                         if (j.data->visual_id == id)
 626                                 return j.data;
 627                 }
 628         }
 629         return 0;
 630 }
 631
 632 static uint8_t
 633 get_depth_of_visual(xcb_screen_t *screen,
 634                    xcb_visualid_t id)
 635 {
 636         xcb_depth_iterator_t i;
 637         xcb_visualtype_iterator_t j;
 638         for (i = xcb_screen_allowed_depths_iterator(screen);
 639              i.rem;
 640              xcb_depth_next(&i)) {
 641                 for (j = xcb_depth_visuals_iterator(i.data);
 642                      j.rem;
 643                      xcb_visualtype_next(&j)) {
 644                         if (j.data->visual_id == id)
 645                                 return i.data->depth;
 646                 }
 647         }
 648         return 0;
 649 }
 650
 651 static int
 652 x11_output_init_shm(struct x11_compositor *c, struct x11_output *output,
 653         int width, int height)
 654 {
 655         xcb_screen_iterator_t iter;
 656         xcb_visualtype_t *visual_type;
 657         xcb_format_iterator_t fmt;
 658         xcb_void_cookie_t cookie;
 659         xcb_generic_error_t *err;
 660         const xcb_query_extension_reply_t *ext;
 661         int bitsperpixel = 0;
 662         pixman_format_code_t pixman_format;
 663
 664         /* Check if SHM is available */
 665         ext = xcb_get_extension_data(c->conn, &xcb_shm_id);
 666         if (ext == NULL || !ext->present) {
 667                 /* SHM is missing */
 668                 weston_log("SHM extension is not available\n");
 669                 errno = ENOENT;
 670                 return -1;
 671         }
 672
 673         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 674         visual_type = find_visual_by_id(iter.data, iter.data->root_visual);
 675         if (!visual_type) {
 676                 weston_log("Failed to lookup visual for root window\n");
 677                 errno = ENOENT;
 678                 return -1;
 679         }
 680         weston_log("Found visual, bits per value: %d, red_mask: %.8x, green_mask: %.8x, blue_mask: %.8x\n",
 681                 visual_type->bits_per_rgb_value,
 682                 visual_type->red_mask,
 683                 visual_type->green_mask,
 684                 visual_type->blue_mask);
 685         output->depth = get_depth_of_visual(iter.data, iter.data->root_visual);
 686         weston_log("Visual depth is %d\n", output->depth);
 687
 688         for (fmt = xcb_setup_pixmap_formats_iterator(xcb_get_setup(c->conn));
 689              fmt.rem;
 690              xcb_format_next(&fmt)) {
 691                 if (fmt.data->depth == output->depth) {
 692                         bitsperpixel = fmt.data->bits_per_pixel;
 693                         break;
 694                 }
 695         }
 696         weston_log("Found format for depth %d, bpp: %d\n",
 697                 output->depth, bitsperpixel);
 698
 699         if  (bitsperpixel == 32 &&
 700              visual_type->red_mask == 0xff0000 &&
 701              visual_type->green_mask == 0x00ff00 &&
 702              visual_type->blue_mask == 0x0000ff) {
 703                 weston_log("Will use x8r8g8b8 format for SHM surfaces\n");
 704                 pixman_format = PIXMAN_x8r8g8b8;
 705         } else if (bitsperpixel == 16 &&
 706                    visual_type->red_mask == 0x00f800 &&
 707                    visual_type->green_mask == 0x0007e0 &&
 708                    visual_type->blue_mask == 0x00001f) {
 709                 weston_log("Will use r5g6b5 format for SHM surfaces\n");
 710                 pixman_format = PIXMAN_r5g6b5;
 711         } else {
 712                 weston_log("Can't find appropriate format for SHM pixmap\n");
 713                 errno = ENOTSUP;
 714                 return -1;
 715         }
 716
 717
 718         /* Create SHM segment and attach it */
 719         output->shm_id = shmget(IPC_PRIVATE, width * height * (bitsperpixel / 8), IPC_CREAT | S_IRWXU);
 720         if (output->shm_id == -1) {
 721                 weston_log("x11shm: failed to allocate SHM segment\n");
 722                 return -1;
 723         }
 724         output->buf = shmat(output->shm_id, NULL, 0 /* read/write */);
 725         if (-1 == (long)output->buf) {
 726                 weston_log("x11shm: failed to attach SHM segment\n");
 727                 return -1;
 728         }
 729         output->segment = xcb_generate_id(c->conn);
 730         cookie = xcb_shm_attach_checked(c->conn, output->segment, output->shm_id, 1);
 731         err = xcb_request_check(c->conn, cookie);
 732         if (err) {
 733                 weston_log("x11shm: xcb_shm_attach error %d\n", err->error_code);
 734                 free(err);
 735                 return -1;
 736         }
 737
 738         shmctl(output->shm_id, IPC_RMID, NULL);
 739
 740         /* Now create pixman image */
 741         output->hw_surface = pixman_image_create_bits(pixman_format, width, height, output->buf,
 742                 width * (bitsperpixel / 8));
 743
 744         output->gc = xcb_generate_id(c->conn);
 745         xcb_create_gc(c->conn, output->gc, output->window, 0, NULL);
 746
 747         return 0;
 748 }
 749
 750 static struct x11_output *
 751 x11_compositor_create_output(struct x11_compositor *c, int x, int y,
 752                              int width, int height, int fullscreen,
 753                              int no_input, char *configured_name,
 754                              uint32_t transform, int32_t scale,
 755                              int default_output)
 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 = "weston-X11";
 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         if (default_output)
 910                 c->base.default_output = &output->base;
 911
 912         weston_log("x11 output %dx%d, window id %d\n",
 913                    width, height, output->window);
 914
 915         return output;
 916 }
 917
 918 static struct x11_output *
 919 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 920 {
 921         struct x11_output *output;
 922
 923         wl_list_for_each(output, &c->base.output_list, base.link) {
 924                 if (output->window == window)
 925                         return output;
 926         }
 927
 928         assert(0);
 929 }
 930
 931 static void
 932 x11_compositor_delete_window(struct x11_compositor *c, xcb_window_t window)
 933 {
 934         struct x11_output *output;
 935
 936         output = x11_compositor_find_output(c, window);
 937         x11_output_destroy(&output->base);
 938
 939         xcb_flush(c->conn);
 940
 941         if (wl_list_empty(&c->base.output_list))
 942                 wl_display_terminate(c->base.wl_display);
 943 }
 944
 945 #ifdef HAVE_XCB_XKB
 946 static void
 947 update_xkb_state(struct x11_compositor *c, xcb_xkb_state_notify_event_t *state)
 948 {
 949         xkb_state_update_mask(c->core_seat.keyboard->xkb_state.state,
 950                               get_xkb_mod_mask(c, state->baseMods),
 951                               get_xkb_mod_mask(c, state->latchedMods),
 952                               get_xkb_mod_mask(c, state->lockedMods),
 953                               0,
 954                               0,
 955                               state->group);
 956
 957         notify_modifiers(&c->core_seat,
 958                          wl_display_next_serial(c->base.wl_display));
 959 }
 960 #endif
 961
 962 /**
 963  * This is monumentally unpleasant.  If we don't have XCB-XKB bindings,
 964  * the best we can do (given that XCB also lacks XI2 support), is to take
 965  * the state from the core key events.  Unfortunately that only gives us
 966  * the effective (i.e. union of depressed/latched/locked) state, and we
 967  * need the granularity.
 968  *
 969  * So we still update the state with every key event we see, but also use
 970  * the state field from X11 events as a mask so we don't get any stuck
 971  * modifiers.
 972  */
 973 static void
 974 update_xkb_state_from_core(struct x11_compositor *c, uint16_t x11_mask)
 975 {
 976         uint32_t mask = get_xkb_mod_mask(c, x11_mask);
 977         struct weston_keyboard *keyboard = c->core_seat.keyboard;
 978
 979         xkb_state_update_mask(c->core_seat.keyboard->xkb_state.state,
 980                               keyboard->modifiers.mods_depressed & mask,
 981                               keyboard->modifiers.mods_latched & mask,
 982                               keyboard->modifiers.mods_locked & mask,
 983                               0,
 984                               0,
 985                               (x11_mask >> 13) & 3);
 986         notify_modifiers(&c->core_seat,
 987                          wl_display_next_serial(c->base.wl_display));
 988 }
 989
 990 static void
 991 x11_compositor_deliver_button_event(struct x11_compositor *c,
 992                                     xcb_generic_event_t *event, int state)
 993 {
 994         xcb_button_press_event_t *button_event =
 995                 (xcb_button_press_event_t *) event;
 996         uint32_t button;
 997         struct x11_output *output;
 998
 999         output = x11_compositor_find_output(c, button_event->event);
1000
1001         if (state)
1002                 xcb_grab_pointer(c->conn, 0, output->window,
1003                                  XCB_EVENT_MASK_BUTTON_PRESS |
1004                                  XCB_EVENT_MASK_BUTTON_RELEASE |
1005                                  XCB_EVENT_MASK_POINTER_MOTION |
1006                                  XCB_EVENT_MASK_ENTER_WINDOW |
1007                                  XCB_EVENT_MASK_LEAVE_WINDOW,
1008                                  XCB_GRAB_MODE_ASYNC,
1009                                  XCB_GRAB_MODE_ASYNC,
1010                                  output->window, XCB_CURSOR_NONE,
1011                                  button_event->time);
1012         else
1013                 xcb_ungrab_pointer(c->conn, button_event->time);
1014
1015         if (!c->has_xkb)
1016                 update_xkb_state_from_core(c, button_event->state);
1017
1018         switch (button_event->detail) {
1019         default:
1020                 button = button_event->detail + BTN_LEFT - 1;
1021                 break;
1022         case 2:
1023                 button = BTN_MIDDLE;
1024                 break;
1025         case 3:
1026                 button = BTN_RIGHT;
1027                 break;
1028         case 4:
1029                 /* Axis are measured in pixels, but the xcb events are discrete
1030                  * steps. Therefore move the axis by some pixels every step. */
1031                 if (state)
1032                         notify_axis(&c->core_seat,
1033                                     weston_compositor_get_time(),
1034                                     WL_POINTER_AXIS_VERTICAL_SCROLL,
1035                                     -DEFAULT_AXIS_STEP_DISTANCE);
1036                 return;
1037         case 5:
1038                 if (state)
1039                         notify_axis(&c->core_seat,
1040                                     weston_compositor_get_time(),
1041                                     WL_POINTER_AXIS_VERTICAL_SCROLL,
1042                                     DEFAULT_AXIS_STEP_DISTANCE);
1043                 return;
1044         case 6:
1045                 if (state)
1046                         notify_axis(&c->core_seat,
1047                                     weston_compositor_get_time(),
1048                                     WL_POINTER_AXIS_HORIZONTAL_SCROLL,
1049                                     -DEFAULT_AXIS_STEP_DISTANCE);
1050                 return;
1051         case 7:
1052                 if (state)
1053                         notify_axis(&c->core_seat,
1054                                     weston_compositor_get_time(),
1055                                     WL_POINTER_AXIS_HORIZONTAL_SCROLL,
1056                                     DEFAULT_AXIS_STEP_DISTANCE);
1057                 return;
1058         }
1059
1060         notify_button(&c->core_seat,
1061                       weston_compositor_get_time(), button,
1062                       state ? WL_POINTER_BUTTON_STATE_PRESSED :
1063                               WL_POINTER_BUTTON_STATE_RELEASED);
1064 }
1065
1066 static void
1067 x11_compositor_deliver_motion_event(struct x11_compositor *c,
1068                                         xcb_generic_event_t *event)
1069 {
1070         struct x11_output *output;
1071         wl_fixed_t x, y;
1072         xcb_motion_notify_event_t *motion_notify =
1073                         (xcb_motion_notify_event_t *) event;
1074
1075         if (!c->has_xkb)
1076                 update_xkb_state_from_core(c, motion_notify->state);
1077         output = x11_compositor_find_output(c, motion_notify->event);
1078         weston_output_transform_coordinate(&output->base,
1079                                            wl_fixed_from_int(motion_notify->event_x),
1080                                            wl_fixed_from_int(motion_notify->event_y),
1081                                            &x, &y);
1082
1083         notify_motion(&c->core_seat, weston_compositor_get_time(),
1084                       x - c->prev_x, y - c->prev_y);
1085
1086         c->prev_x = x;
1087         c->prev_y = y;
1088 }
1089
1090 static void
1091 x11_compositor_deliver_enter_event(struct x11_compositor *c,
1092                                         xcb_generic_event_t *event)
1093 {
1094         struct x11_output *output;
1095         wl_fixed_t x, y;
1096
1097         xcb_enter_notify_event_t *enter_notify =
1098                         (xcb_enter_notify_event_t *) event;
1099         if (enter_notify->state >= Button1Mask)
1100                 return;
1101         if (!c->has_xkb)
1102                 update_xkb_state_from_core(c, enter_notify->state);
1103         output = x11_compositor_find_output(c, enter_notify->event);
1104         weston_output_transform_coordinate(&output->base,
1105                                            wl_fixed_from_int(enter_notify->event_x),
1106                                            wl_fixed_from_int(enter_notify->event_y), &x, &y);
1107
1108         notify_pointer_focus(&c->core_seat, &output->base, x, y);
1109
1110         c->prev_x = x;
1111         c->prev_y = y;
1112 }
1113
1114 static int
1115 x11_compositor_next_event(struct x11_compositor *c,
1116                           xcb_generic_event_t **event, uint32_t mask)
1117 {
1118         if (mask & WL_EVENT_READABLE) {
1119                 *event = xcb_poll_for_event(c->conn);
1120         } else {
1121 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
1122                 *event = xcb_poll_for_queued_event(c->conn);
1123 #else
1124                 *event = xcb_poll_for_event(c->conn);
1125 #endif
1126         }
1127
1128         return *event != NULL;
1129 }
1130
1131 static int
1132 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
1133 {
1134         struct x11_compositor *c = data;
1135         struct x11_output *output;
1136         xcb_generic_event_t *event, *prev;
1137         xcb_client_message_event_t *client_message;
1138         xcb_enter_notify_event_t *enter_notify;
1139         xcb_key_press_event_t *key_press, *key_release;
1140         xcb_keymap_notify_event_t *keymap_notify;
1141         xcb_focus_in_event_t *focus_in;
1142         xcb_expose_event_t *expose;
1143         xcb_atom_t atom;
1144         xcb_window_t window;
1145         uint32_t *k;
1146         uint32_t i, set;
1147         uint8_t response_type;
1148         int count;
1149
1150         prev = NULL;
1151         count = 0;
1152         while (x11_compositor_next_event(c, &event, mask)) {
1153                 response_type = event->response_type & ~0x80;
1154
1155                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
1156                 case XCB_KEY_RELEASE:
1157                         /* Suppress key repeat events; this is only used if we
1158                          * don't have XCB XKB support. */
1159                         key_release = (xcb_key_press_event_t *) prev;
1160                         key_press = (xcb_key_press_event_t *) event;
1161                         if (response_type == XCB_KEY_PRESS &&
1162                             key_release->time == key_press->time &&
1163                             key_release->detail == key_press->detail) {
1164                                 /* Don't deliver the held key release
1165                                  * event or the new key press event. */
1166                                 free(event);
1167                                 free(prev);
1168                                 prev = NULL;
1169                                 continue;
1170                         } else {
1171                                 /* Deliver the held key release now
1172                                  * and fall through and handle the new
1173                                  * event below. */
1174                                 update_xkb_state_from_core(c, key_release->state);
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_AUTOMATIC);
1180                                 free(prev);
1181                                 prev = NULL;
1182                                 break;
1183                         }
1184
1185                 case XCB_FOCUS_IN:
1186                         assert(response_type == XCB_KEYMAP_NOTIFY);
1187                         keymap_notify = (xcb_keymap_notify_event_t *) event;
1188                         c->keys.size = 0;
1189                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
1190                                 set = keymap_notify->keys[i >> 3] &
1191                                         (1 << (i & 7));
1192                                 if (set) {
1193                                         k = wl_array_add(&c->keys, sizeof *k);
1194                                         *k = i;
1195                                 }
1196                         }
1197
1198                         /* Unfortunately the state only comes with the enter
1199                          * event, rather than with the focus event.  I'm not
1200                          * sure of the exact semantics around it and whether
1201                          * we can ensure that we get both? */
1202                         notify_keyboard_focus_in(&c->core_seat, &c->keys,
1203                                                  STATE_UPDATE_AUTOMATIC);
1204
1205                         free(prev);
1206                         prev = NULL;
1207                         break;
1208
1209                 default:
1210                         /* No previous event held */
1211                         break;
1212                 }
1213
1214                 switch (response_type) {
1215                 case XCB_KEY_PRESS:
1216                         key_press = (xcb_key_press_event_t *) event;
1217                         if (!c->has_xkb)
1218                                 update_xkb_state_from_core(c, key_press->state);
1219                         notify_key(&c->core_seat,
1220                                    weston_compositor_get_time(),
1221                                    key_press->detail - 8,
1222                                    WL_KEYBOARD_KEY_STATE_PRESSED,
1223                                    c->has_xkb ? STATE_UPDATE_NONE :
1224                                                 STATE_UPDATE_AUTOMATIC);
1225                         break;
1226                 case XCB_KEY_RELEASE:
1227                         /* If we don't have XKB, we need to use the lame
1228                          * autorepeat detection above. */
1229                         if (!c->has_xkb) {
1230                                 prev = event;
1231                                 break;
1232                         }
1233                         key_release = (xcb_key_press_event_t *) event;
1234                         notify_key(&c->core_seat,
1235                                    weston_compositor_get_time(),
1236                                    key_release->detail - 8,
1237                                    WL_KEYBOARD_KEY_STATE_RELEASED,
1238                                    STATE_UPDATE_NONE);
1239                         break;
1240                 case XCB_BUTTON_PRESS:
1241                         x11_compositor_deliver_button_event(c, event, 1);
1242                         break;
1243                 case XCB_BUTTON_RELEASE:
1244                         x11_compositor_deliver_button_event(c, event, 0);
1245                         break;
1246                 case XCB_MOTION_NOTIFY:
1247                         x11_compositor_deliver_motion_event(c, event);
1248                         break;
1249
1250                 case XCB_EXPOSE:
1251                         expose = (xcb_expose_event_t *) event;
1252                         output = x11_compositor_find_output(c, expose->window);
1253                         weston_output_damage(&output->base);
1254                         weston_output_schedule_repaint(&output->base);
1255                         break;
1256
1257                 case XCB_ENTER_NOTIFY:
1258                         x11_compositor_deliver_enter_event(c, event);
1259                         break;
1260
1261                 case XCB_LEAVE_NOTIFY:
1262                         enter_notify = (xcb_enter_notify_event_t *) event;
1263                         if (enter_notify->state >= Button1Mask)
1264                                 break;
1265                         if (!c->has_xkb)
1266                                 update_xkb_state_from_core(c, enter_notify->state);
1267                         notify_pointer_focus(&c->core_seat, NULL, 0, 0);
1268                         break;
1269
1270                 case XCB_CLIENT_MESSAGE:
1271                         client_message = (xcb_client_message_event_t *) event;
1272                         atom = client_message->data.data32[0];
1273                         window = client_message->window;
1274                         if (atom == c->atom.wm_delete_window)
1275                                 x11_compositor_delete_window(c, window);
1276                         break;
1277
1278                 case XCB_FOCUS_IN:
1279                         focus_in = (xcb_focus_in_event_t *) event;
1280                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
1281                                 break;
1282
1283                         prev = event;
1284                         break;
1285
1286                 case XCB_FOCUS_OUT:
1287                         focus_in = (xcb_focus_in_event_t *) event;
1288                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
1289                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
1290                                 break;
1291                         notify_keyboard_focus_out(&c->core_seat);
1292                         break;
1293
1294                 default:
1295                         break;
1296                 }
1297
1298 #ifdef HAVE_XCB_XKB
1299                 if (c->has_xkb) {
1300                         if (response_type == c->xkb_event_base) {
1301                                 xcb_xkb_state_notify_event_t *state =
1302                                         (xcb_xkb_state_notify_event_t *) event;
1303                                 if (state->xkbType == XCB_XKB_STATE_NOTIFY)
1304                                         update_xkb_state(c, state);
1305                         } else if (response_type == XCB_PROPERTY_NOTIFY) {
1306                                 xcb_property_notify_event_t *prop_notify =
1307                                         (xcb_property_notify_event_t *) event;
1308                                 if (prop_notify->window == c->screen->root &&
1309                                     prop_notify->atom == c->atom.xkb_names &&
1310                                     prop_notify->state == XCB_PROPERTY_NEW_VALUE)
1311                                         update_xkb_keymap(c);
1312                         }
1313                 }
1314 #endif
1315
1316                 count++;
1317                 if (prev != event)
1318                         free (event);
1319         }
1320
1321         switch (prev ? prev->response_type & ~0x80 : 0x80) {
1322         case XCB_KEY_RELEASE:
1323                 key_release = (xcb_key_press_event_t *) prev;
1324                 update_xkb_state_from_core(c, key_release->state);
1325                 notify_key(&c->core_seat,
1326                            weston_compositor_get_time(),
1327                            key_release->detail - 8,
1328                            WL_KEYBOARD_KEY_STATE_RELEASED,
1329                            STATE_UPDATE_AUTOMATIC);
1330                 free(prev);
1331                 prev = NULL;
1332                 break;
1333         default:
1334                 break;
1335         }
1336
1337         return count;
1338 }
1339
1340 #define F(field) offsetof(struct x11_compositor, field)
1341
1342 static void
1343 x11_compositor_get_resources(struct x11_compositor *c)
1344 {
1345         static const struct { const char *name; int offset; } atoms[] = {
1346                 { "WM_PROTOCOLS",       F(atom.wm_protocols) },
1347                 { "WM_NORMAL_HINTS",    F(atom.wm_normal_hints) },
1348                 { "WM_SIZE_HINTS",      F(atom.wm_size_hints) },
1349                 { "WM_DELETE_WINDOW",   F(atom.wm_delete_window) },
1350                 { "WM_CLASS",           F(atom.wm_class) },
1351                 { "_NET_WM_NAME",       F(atom.net_wm_name) },
1352                 { "_NET_WM_ICON",       F(atom.net_wm_icon) },
1353                 { "_NET_WM_STATE",      F(atom.net_wm_state) },
1354                 { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
1355                 { "_NET_SUPPORTING_WM_CHECK",
1356                                         F(atom.net_supporting_wm_check) },
1357                 { "_NET_SUPPORTED",     F(atom.net_supported) },
1358                 { "STRING",             F(atom.string) },
1359                 { "UTF8_STRING",        F(atom.utf8_string) },
1360                 { "CARDINAL",           F(atom.cardinal) },
1361                 { "_XKB_RULES_NAMES",   F(atom.xkb_names) },
1362         };
1363
1364         xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
1365         xcb_intern_atom_reply_t *reply;
1366         xcb_pixmap_t pixmap;
1367         xcb_gc_t gc;
1368         unsigned int i;
1369         uint8_t data[] = { 0, 0, 0, 0 };
1370
1371         for (i = 0; i < ARRAY_LENGTH(atoms); i++)
1372                 cookies[i] = xcb_intern_atom (c->conn, 0,
1373                                               strlen(atoms[i].name),
1374                                               atoms[i].name);
1375
1376         for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
1377                 reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
1378                 *(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
1379                 free(reply);
1380         }
1381
1382         pixmap = xcb_generate_id(c->conn);
1383         gc = xcb_generate_id(c->conn);
1384         xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
1385         xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
1386         xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
1387                       pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
1388         c->null_cursor = xcb_generate_id(c->conn);
1389         xcb_create_cursor (c->conn, c->null_cursor,
1390                            pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
1391         xcb_free_gc(c->conn, gc);
1392         xcb_free_pixmap(c->conn, pixmap);
1393 }
1394
1395 static void
1396 x11_compositor_get_wm_info(struct x11_compositor *c)
1397 {
1398         xcb_get_property_cookie_t cookie;
1399         xcb_get_property_reply_t *reply;
1400         xcb_atom_t *atom;
1401         unsigned int i;
1402
1403         cookie = xcb_get_property(c->conn, 0, c->screen->root,
1404                                   c->atom.net_supported,
1405                                   XCB_ATOM_ATOM, 0, 1024);
1406         reply = xcb_get_property_reply(c->conn, cookie, NULL);
1407         if (reply == NULL)
1408                 return;
1409
1410         atom = (xcb_atom_t *) xcb_get_property_value(reply);
1411
1412         for (i = 0; i < reply->value_len; i++) {
1413                 if (atom[i] == c->atom.net_wm_state_fullscreen)
1414                         c->has_net_wm_state_fullscreen = 1;
1415         }
1416 }
1417
1418 static void
1419 x11_restore(struct weston_compositor *ec)
1420 {
1421 }
1422
1423 static void
1424 x11_destroy(struct weston_compositor *ec)
1425 {
1426         struct x11_compositor *compositor = (struct x11_compositor *)ec;
1427
1428         wl_event_source_remove(compositor->xcb_source);
1429         x11_input_destroy(compositor);
1430
1431         weston_compositor_shutdown(ec); /* destroys outputs, too */
1432
1433         XCloseDisplay(compositor->dpy);
1434         free(ec);
1435 }
1436
1437 static uint32_t
1438 parse_transform(const char *transform, const char *output_name)
1439 {
1440         static const struct { const char *name; uint32_t token; } names[] = {
1441                 { "normal",     WL_OUTPUT_TRANSFORM_NORMAL },
1442                 { "90",         WL_OUTPUT_TRANSFORM_90 },
1443                 { "180",        WL_OUTPUT_TRANSFORM_180 },
1444                 { "270",        WL_OUTPUT_TRANSFORM_270 },
1445                 { "flipped",    WL_OUTPUT_TRANSFORM_FLIPPED },
1446                 { "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
1447                 { "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
1448                 { "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
1449         };
1450         unsigned int i;
1451
1452         for (i = 0; i < ARRAY_LENGTH(names); i++)
1453                 if (strcmp(names[i].name, transform) == 0)
1454                         return names[i].token;
1455
1456         weston_log("Invalid transform \"%s\" for output %s\n",
1457                    transform, output_name);
1458
1459         return WL_OUTPUT_TRANSFORM_NORMAL;
1460 }
1461
1462 static int
1463 init_gl_renderer(struct x11_compositor *c)
1464 {
1465         int ret;
1466
1467         gl_renderer = weston_load_module("gl-renderer.so",
1468                                          "gl_renderer_interface");
1469         if (!gl_renderer)
1470                 return -1;
1471
1472         ret = gl_renderer->create(&c->base, (EGLNativeDisplayType) c->dpy,
1473                                   gl_renderer->opaque_attribs, NULL);
1474
1475         return ret;
1476 }
1477 static struct weston_compositor *
1478 x11_compositor_create(struct wl_display *display,
1479                       int fullscreen,
1480                       int no_input,
1481                       int use_pixman,
1482                       int *argc, char *argv[],
1483                       struct weston_config *config)
1484 {
1485         struct x11_compositor *c;
1486         struct x11_output *output;
1487         struct weston_config_section *section;
1488         xcb_screen_iterator_t s;
1489         int i, x = 0, output_count = 0;
1490         int width, height, scale, count;
1491         const char *section_name;
1492         char *name, *t, *mode;
1493         uint32_t transform;
1494         int default_output;
1495
1496         weston_log("initializing x11 backend\n");
1497
1498         c = zalloc(sizeof *c);
1499         if (c == NULL)
1500                 return NULL;
1501
1502         if (weston_compositor_init(&c->base, display, argc, argv, config) < 0)
1503                 goto err_free;
1504
1505         c->dpy = XOpenDisplay(NULL);
1506         if (c->dpy == NULL)
1507                 goto err_free;
1508
1509         c->conn = XGetXCBConnection(c->dpy);
1510         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
1511
1512         if (xcb_connection_has_error(c->conn))
1513                 goto err_xdisplay;
1514
1515         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
1516         c->screen = s.data;
1517         wl_array_init(&c->keys);
1518
1519         x11_compositor_get_resources(c);
1520         x11_compositor_get_wm_info(c);
1521
1522         if (!c->has_net_wm_state_fullscreen && fullscreen) {
1523                 weston_log("Can not fullscreen without window manager support"
1524                            "(need _NET_WM_STATE_FULLSCREEN)\n");
1525                 fullscreen = 0;
1526         }
1527
1528         c->base.wl_display = display;
1529         c->use_pixman = use_pixman;
1530         if (c->use_pixman) {
1531                 if (pixman_renderer_init(&c->base) < 0)
1532                         goto err_xdisplay;
1533         }
1534         else if (init_gl_renderer(c) < 0) {
1535                 goto err_xdisplay;
1536         }
1537         weston_log("Using %s renderer\n", use_pixman ? "pixman" : "gl");
1538
1539         c->base.destroy = x11_destroy;
1540         c->base.restore = x11_restore;
1541
1542         if (x11_input_create(c, no_input) < 0)
1543                 goto err_renderer;
1544
1545         width = option_width ? option_width : 1024;
1546         height = option_height ? option_height : 640;
1547         scale = option_scale ? option_scale : 1;
1548         count = option_count ? option_count : 1;
1549
1550         section = NULL;
1551         while (weston_config_next_section(c->base.config,
1552                                           &section, &section_name)) {
1553                 if (strcmp(section_name, "output") != 0)
1554                         continue;
1555                 weston_config_section_get_string(section, "name", &name, NULL);
1556                 if (name == NULL || name[0] != 'X') {
1557                         free(name);
1558                         continue;
1559                 }
1560
1561                 weston_config_section_get_string(section,
1562                                                  "mode", &mode, "1024x600");
1563                 if (sscanf(mode, "%dx%d", &width, &height) != 2) {
1564                         weston_log("Invalid mode \"%s\" for output %s\n",
1565                                    mode, name);
1566                         width = 1024;
1567                         height = 600;
1568                 }
1569                 free(mode);
1570
1571                 if (option_width)
1572                         width = option_width;
1573                 if (option_height)
1574                         height = option_height;
1575
1576                 weston_config_section_get_int(section, "scale", &scale, 1);
1577                 if (option_scale)
1578                         scale = option_scale;
1579
1580                 weston_config_section_get_string(section,
1581                                                  "transform", &t, "normal");
1582                 transform = parse_transform(t, name);
1583                 free(t);
1584
1585                 weston_config_section_get_int(section, "default_output",
1586                                               &default_output, 0);
1587
1588                 output = x11_compositor_create_output(c, x, 0,
1589                                                       width, height,
1590                                                       fullscreen, no_input,
1591                                                       name, transform, scale,
1592                                                       default_output);
1593                 free(name);
1594                 if (output == NULL)
1595                         goto err_x11_input;
1596
1597                 x = pixman_region32_extents(&output->base.region)->x2;
1598
1599                 output_count++;
1600                 if (option_count && output_count >= option_count)
1601                         break;
1602         }
1603
1604         for (i = output_count; i < count; i++) {
1605                 output = x11_compositor_create_output(c, x, 0, width, height,
1606                                                       fullscreen, no_input, NULL,
1607                                                       WL_OUTPUT_TRANSFORM_NORMAL, scale,
1608                                                       default_output);
1609                 if (output == NULL)
1610                         goto err_x11_input;
1611                 x = pixman_region32_extents(&output->base.region)->x2;
1612         }
1613
1614         c->xcb_source =
1615                 wl_event_loop_add_fd(c->base.input_loop,
1616                                      xcb_get_file_descriptor(c->conn),
1617                                      WL_EVENT_READABLE,
1618                                      x11_compositor_handle_event, c);
1619         wl_event_source_check(c->xcb_source);
1620
1621         return &c->base;
1622
1623 err_x11_input:
1624         x11_input_destroy(c);
1625 err_renderer:
1626         c->base.renderer->destroy(&c->base);
1627 err_xdisplay:
1628         XCloseDisplay(c->dpy);
1629 err_free:
1630         free(c);
1631         return NULL;
1632 }
1633
1634 WL_EXPORT struct weston_compositor *
1635 backend_init(struct wl_display *display, int *argc, char *argv[],
1636              struct weston_config *config)
1637 {
1638         int fullscreen = 0;
1639         int no_input = 0;
1640         int use_pixman = 0;
1641
1642         const struct weston_option x11_options[] = {
1643                 { WESTON_OPTION_INTEGER, "width", 0, &option_width },
1644                 { WESTON_OPTION_INTEGER, "height", 0, &option_height },
1645                 { WESTON_OPTION_INTEGER, "scale", 0, &option_scale },
1646                 { WESTON_OPTION_BOOLEAN, "fullscreen", 'f', &fullscreen },
1647                 { WESTON_OPTION_INTEGER, "output-count", 0, &option_count },
1648                 { WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
1649                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
1650         };
1651
1652         parse_options(x11_options, ARRAY_LENGTH(x11_options), argc, argv);
1653
1654         return x11_compositor_create(display,
1655                                      fullscreen,
1656                                      no_input,
1657                                      use_pixman,
1658                                      argc, argv, config);
1659 }