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_count;
  60
  61 struct x11_compositor {
  62         struct weston_compositor         base;
  63
  64         Display                 *dpy;
  65         xcb_connection_t        *conn;
  66         xcb_screen_t            *screen;
  67         xcb_cursor_t             null_cursor;
  68         struct wl_array          keys;
  69         struct wl_event_source  *xcb_source;
  70         struct xkb_keymap       *xkb_keymap;
  71         unsigned int             has_xkb;
  72         uint8_t                  xkb_event_base;
  73         int                      use_pixman;
  74
  75         int                      has_net_wm_state_fullscreen;
  76
  77         /* We could map multi-pointer X to multiple wayland seats, but
  78          * for now we only support core X input. */
  79         struct weston_seat               core_seat;
  80         wl_fixed_t                       prev_x;
  81         wl_fixed_t                       prev_y;
  82
  83         struct {
  84                 xcb_atom_t               wm_protocols;
  85                 xcb_atom_t               wm_normal_hints;
  86                 xcb_atom_t               wm_size_hints;
  87                 xcb_atom_t               wm_delete_window;
  88                 xcb_atom_t               wm_class;
  89                 xcb_atom_t               net_wm_name;
  90                 xcb_atom_t               net_supporting_wm_check;
  91                 xcb_atom_t               net_supported;
  92                 xcb_atom_t               net_wm_icon;
  93                 xcb_atom_t               net_wm_state;
  94                 xcb_atom_t               net_wm_state_fullscreen;
  95                 xcb_atom_t               string;
  96                 xcb_atom_t               utf8_string;
  97                 xcb_atom_t               cardinal;
  98                 xcb_atom_t               xkb_names;
  99         } atom;
 100 };
 101
 102 struct x11_output {
 103         struct weston_output    base;
 104
 105         xcb_window_t            window;
 106         struct weston_mode      mode;
 107         struct wl_event_source *finish_frame_timer;
 108
 109         xcb_gc_t                gc;
 110         xcb_shm_seg_t           segment;
 111         pixman_image_t         *hw_surface;
 112         int                     shm_id;
 113         void                   *buf;
 114         uint8_t                 depth;
 115         int32_t                 scale;
 116 };
 117
 118 struct gl_renderer_interface *gl_renderer;
 119
 120 static struct xkb_keymap *
 121 x11_compositor_get_keymap(struct x11_compositor *c)
 122 {
 123         xcb_get_property_cookie_t cookie;
 124         xcb_get_property_reply_t *reply;
 125         struct xkb_rule_names names;
 126         struct xkb_keymap *ret;
 127         const char *value_all, *value_part;
 128         int length_all, length_part;
 129
 130         memset(&names, 0, sizeof(names));
 131
 132         cookie = xcb_get_property(c->conn, 0, c->screen->root,
 133                                   c->atom.xkb_names, c->atom.string, 0, 1024);
 134         reply = xcb_get_property_reply(c->conn, cookie, NULL);
 135         if (reply == NULL)
 136                 return NULL;
 137
 138         value_all = xcb_get_property_value(reply);
 139         length_all = xcb_get_property_value_length(reply);
 140         value_part = value_all;
 141
 142 #define copy_prop_value(to) \
 143         length_part = strlen(value_part); \
 144         if (value_part + length_part < (value_all + length_all) && \
 145             length_part > 0) \
 146                 names.to = value_part; \
 147         value_part += length_part + 1;
 148
 149         copy_prop_value(rules);
 150         copy_prop_value(model);
 151         copy_prop_value(layout);
 152         copy_prop_value(variant);
 153         copy_prop_value(options);
 154 #undef copy_prop_value
 155
 156         ret = xkb_map_new_from_names(c->base.xkb_context, &names, 0);
 157
 158         free(reply);
 159         return ret;
 160 }
 161
 162 static uint32_t
 163 get_xkb_mod_mask(struct x11_compositor *c, uint32_t in)
 164 {
 165         struct weston_xkb_info *info = c->core_seat.keyboard->xkb_info;
 166         uint32_t ret = 0;
 167
 168         if ((in & ShiftMask) && info->shift_mod != XKB_MOD_INVALID)
 169                 ret |= (1 << info->shift_mod);
 170         if ((in & LockMask) && info->caps_mod != XKB_MOD_INVALID)
 171                 ret |= (1 << info->caps_mod);
 172         if ((in & ControlMask) && info->ctrl_mod != XKB_MOD_INVALID)
 173                 ret |= (1 << info->ctrl_mod);
 174         if ((in & Mod1Mask) && info->alt_mod != XKB_MOD_INVALID)
 175                 ret |= (1 << info->alt_mod);
 176         if ((in & Mod2Mask) && info->mod2_mod != XKB_MOD_INVALID)
 177                 ret |= (1 << info->mod2_mod);
 178         if ((in & Mod3Mask) && info->mod3_mod != XKB_MOD_INVALID)
 179                 ret |= (1 << info->mod3_mod);
 180         if ((in & Mod4Mask) && info->super_mod != XKB_MOD_INVALID)
 181                 ret |= (1 << info->super_mod);
 182         if ((in & Mod5Mask) && info->mod5_mod != XKB_MOD_INVALID)
 183                 ret |= (1 << info->mod5_mod);
 184
 185         return ret;
 186 }
 187
 188 static void
 189 x11_compositor_setup_xkb(struct x11_compositor *c)
 190 {
 191 #ifndef HAVE_XCB_XKB
 192         weston_log("XCB-XKB not available during build\n");
 193         c->has_xkb = 0;
 194         c->xkb_event_base = 0;
 195         return;
 196 #else
 197         const xcb_query_extension_reply_t *ext;
 198         xcb_generic_error_t *error;
 199         xcb_void_cookie_t select;
 200         xcb_xkb_use_extension_cookie_t use_ext;
 201         xcb_xkb_use_extension_reply_t *use_ext_reply;
 202         xcb_xkb_per_client_flags_cookie_t pcf;
 203         xcb_xkb_per_client_flags_reply_t *pcf_reply;
 204         xcb_xkb_get_state_cookie_t state;
 205         xcb_xkb_get_state_reply_t *state_reply;
 206         uint32_t values[1] = { XCB_EVENT_MASK_PROPERTY_CHANGE };
 207
 208         c->has_xkb = 0;
 209         c->xkb_event_base = 0;
 210
 211         ext = xcb_get_extension_data(c->conn, &xcb_xkb_id);
 212         if (!ext) {
 213                 weston_log("XKB extension not available on host X11 server\n");
 214                 return;
 215         }
 216         c->xkb_event_base = ext->first_event;
 217
 218         select = xcb_xkb_select_events_checked(c->conn,
 219                                                XCB_XKB_ID_USE_CORE_KBD,
 220                                                XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
 221                                                0,
 222                                                XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
 223                                                0,
 224                                                0,
 225                                                NULL);
 226         error = xcb_request_check(c->conn, select);
 227         if (error) {
 228                 weston_log("error: failed to select for XKB state events\n");
 229                 free(error);
 230                 return;
 231         }
 232
 233         use_ext = xcb_xkb_use_extension(c->conn,
 234                                         XCB_XKB_MAJOR_VERSION,
 235                                         XCB_XKB_MINOR_VERSION);
 236         use_ext_reply = xcb_xkb_use_extension_reply(c->conn, use_ext, NULL);
 237         if (!use_ext_reply) {
 238                 weston_log("couldn't start using XKB extension\n");
 239                 return;
 240         }
 241
 242         if (!use_ext_reply->supported) {
 243                 weston_log("XKB extension version on the server is too old "
 244                            "(want %d.%d, has %d.%d)\n",
 245                            XCB_XKB_MAJOR_VERSION, XCB_XKB_MINOR_VERSION,
 246                            use_ext_reply->serverMajor, use_ext_reply->serverMinor);
 247                 free(use_ext_reply);
 248                 return;
 249         }
 250         free(use_ext_reply);
 251
 252         pcf = xcb_xkb_per_client_flags(c->conn,
 253                                        XCB_XKB_ID_USE_CORE_KBD,
 254                                        XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
 255                                        XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
 256                                        0,
 257                                        0,
 258                                        0);
 259         pcf_reply = xcb_xkb_per_client_flags_reply(c->conn, pcf, NULL);
 260         if (!pcf_reply ||
 261             !(pcf_reply->value & XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT)) {
 262                 weston_log("failed to set XKB per-client flags, not using "
 263                            "detectable repeat\n");
 264                 free(pcf_reply);
 265                 return;
 266         }
 267         free(pcf_reply);
 268
 269         state = xcb_xkb_get_state(c->conn, XCB_XKB_ID_USE_CORE_KBD);
 270         state_reply = xcb_xkb_get_state_reply(c->conn, state, NULL);
 271         if (!state_reply) {
 272                 weston_log("failed to get initial XKB state\n");
 273                 return;
 274         }
 275
 276         xkb_state_update_mask(c->core_seat.keyboard->xkb_state.state,
 277                               get_xkb_mod_mask(c, state_reply->baseMods),
 278                               get_xkb_mod_mask(c, state_reply->latchedMods),
 279                               get_xkb_mod_mask(c, state_reply->lockedMods),
 280                               0,
 281                               0,
 282                               state_reply->group);
 283
 284         free(state_reply);
 285
 286         xcb_change_window_attributes(c->conn, c->screen->root,
 287                                      XCB_CW_EVENT_MASK, values);
 288
 289         c->has_xkb = 1;
 290 #endif
 291 }
 292
 293 #ifdef HAVE_XCB_XKB
 294 static void
 295 update_xkb_keymap(struct x11_compositor *c)
 296 {
 297         struct xkb_keymap *keymap;
 298
 299         keymap = x11_compositor_get_keymap(c);
 300         if (!keymap) {
 301                 weston_log("failed to get XKB keymap\n");
 302                 return;
 303         }
 304         weston_seat_update_keymap(&c->core_seat, keymap);
 305         xkb_keymap_unref(keymap);
 306 }
 307 #endif
 308
 309 static int
 310 x11_input_create(struct x11_compositor *c, int no_input)
 311 {
 312         struct xkb_keymap *keymap;
 313
 314         weston_seat_init(&c->core_seat, &c->base, "default");
 315
 316         if (no_input)
 317                 return 0;
 318
 319         weston_seat_init_pointer(&c->core_seat);
 320
 321         keymap = x11_compositor_get_keymap(c);
 322         if (weston_seat_init_keyboard(&c->core_seat, keymap) < 0)
 323                 return -1;
 324         if (keymap)
 325                 xkb_map_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 / output->scale;
 606                         output->mode.height = configure_notify->height / output->scale;
 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 {
 756         static const char name[] = "Weston Compositor";
 757         static const char class[] = "weston-1\0Weston Compositor";
 758         char title[32];
 759         struct x11_output *output;
 760         xcb_screen_iterator_t iter;
 761         struct wm_normal_hints normal_hints;
 762         struct wl_event_loop *loop;
 763         int output_width, output_height;
 764         int ret;
 765         uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
 766         xcb_atom_t atom_list[1];
 767         uint32_t values[2] = {
 768                 XCB_EVENT_MASK_EXPOSURE |
 769                 XCB_EVENT_MASK_STRUCTURE_NOTIFY,
 770                 0
 771         };
 772
 773         output_width = width * scale;
 774         output_height = height * scale;
 775
 776         if (configured_name)
 777                 sprintf(title, "%s - %s", name, configured_name);
 778         else
 779                 strcpy(title, name);
 780
 781         if (!no_input)
 782                 values[0] |=
 783                         XCB_EVENT_MASK_KEY_PRESS |
 784                         XCB_EVENT_MASK_KEY_RELEASE |
 785                         XCB_EVENT_MASK_BUTTON_PRESS |
 786                         XCB_EVENT_MASK_BUTTON_RELEASE |
 787                         XCB_EVENT_MASK_POINTER_MOTION |
 788                         XCB_EVENT_MASK_ENTER_WINDOW |
 789                         XCB_EVENT_MASK_LEAVE_WINDOW |
 790                         XCB_EVENT_MASK_KEYMAP_STATE |
 791                         XCB_EVENT_MASK_FOCUS_CHANGE;
 792
 793         output = zalloc(sizeof *output);
 794         if (output == NULL)
 795                 return NULL;
 796
 797         output->mode.flags =
 798                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 799
 800         output->mode.width = output_width;
 801         output->mode.height = output_height;
 802         output->mode.refresh = 60000;
 803         output->scale = scale;
 804         wl_list_init(&output->base.mode_list);
 805         wl_list_insert(&output->base.mode_list, &output->mode.link);
 806
 807         values[1] = c->null_cursor;
 808         output->window = xcb_generate_id(c->conn);
 809         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 810         xcb_create_window(c->conn,
 811                           XCB_COPY_FROM_PARENT,
 812                           output->window,
 813                           iter.data->root,
 814                           0, 0,
 815                           output_width, output_height,
 816                           0,
 817                           XCB_WINDOW_CLASS_INPUT_OUTPUT,
 818                           iter.data->root_visual,
 819                           mask, values);
 820
 821         if (fullscreen) {
 822                 atom_list[0] = c->atom.net_wm_state_fullscreen;
 823                 xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE,
 824                                     output->window,
 825                                     c->atom.net_wm_state,
 826                                     XCB_ATOM_ATOM, 32,
 827                                     ARRAY_LENGTH(atom_list), atom_list);
 828         } else {
 829                 /* Don't resize me. */
 830                 memset(&normal_hints, 0, sizeof normal_hints);
 831                 normal_hints.flags =
 832                         WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
 833                 normal_hints.min_width = output_width;
 834                 normal_hints.min_height = output_height;
 835                 normal_hints.max_width = output_width;
 836                 normal_hints.max_height = output_height;
 837                 xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 838                                     c->atom.wm_normal_hints,
 839                                     c->atom.wm_size_hints, 32,
 840                                     sizeof normal_hints / 4,
 841                                     (uint8_t *) &normal_hints);
 842         }
 843
 844         /* Set window name.  Don't bother with non-EWMH WMs. */
 845         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 846                             c->atom.net_wm_name, c->atom.utf8_string, 8,
 847                             strlen(title), title);
 848         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 849                             c->atom.wm_class, c->atom.string, 8,
 850                             sizeof class, class);
 851
 852         x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
 853
 854         x11_output_set_wm_protocols(c, output);
 855
 856         xcb_map_window(c->conn, output->window);
 857
 858         if (fullscreen)
 859                 x11_output_wait_for_map(c, output);
 860
 861         output->base.start_repaint_loop = x11_output_start_repaint_loop;
 862         if (c->use_pixman)
 863                 output->base.repaint = x11_output_repaint_shm;
 864         else
 865                 output->base.repaint = x11_output_repaint_gl;
 866         output->base.destroy = x11_output_destroy;
 867         output->base.assign_planes = NULL;
 868         output->base.set_backlight = NULL;
 869         output->base.set_dpms = NULL;
 870         output->base.switch_mode = NULL;
 871         output->base.current_mode = &output->mode;
 872         output->base.make = "xwayland";
 873         output->base.model = "none";
 874         weston_output_init(&output->base, &c->base,
 875                            x, y, width, height, transform, scale);
 876
 877         if (c->use_pixman) {
 878                 if (x11_output_init_shm(c, output,
 879                                         output->mode.width,
 880                                         output->mode.height) < 0)
 881                         return NULL;
 882                 if (pixman_renderer_output_create(&output->base) < 0) {
 883                         x11_output_deinit_shm(c, output);
 884                         return NULL;
 885                 }
 886         } else {
 887                 ret = gl_renderer->output_create(&output->base,
 888                                                  (EGLNativeWindowType) output->window);
 889                 if (ret < 0)
 890                         return NULL;
 891         }
 892
 893         loop = wl_display_get_event_loop(c->base.wl_display);
 894         output->finish_frame_timer =
 895                 wl_event_loop_add_timer(loop, finish_frame_handler, output);
 896
 897         wl_list_insert(c->base.output_list.prev, &output->base.link);
 898
 899         weston_log("x11 output %dx%d, window id %d\n",
 900                    width, height, output->window);
 901
 902         return output;
 903 }
 904
 905 static struct x11_output *
 906 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 907 {
 908         struct x11_output *output;
 909
 910         wl_list_for_each(output, &c->base.output_list, base.link) {
 911                 if (output->window == window)
 912                         return output;
 913         }
 914
 915         assert(0);
 916 }
 917
 918 static void
 919 x11_compositor_delete_window(struct x11_compositor *c, xcb_window_t window)
 920 {
 921         struct x11_output *output;
 922
 923         output = x11_compositor_find_output(c, window);
 924         x11_output_destroy(&output->base);
 925
 926         xcb_flush(c->conn);
 927
 928         if (wl_list_empty(&c->base.output_list))
 929                 wl_display_terminate(c->base.wl_display);
 930 }
 931
 932 #ifdef HAVE_XCB_XKB
 933 static void
 934 update_xkb_state(struct x11_compositor *c, xcb_xkb_state_notify_event_t *state)
 935 {
 936         xkb_state_update_mask(c->core_seat.keyboard->xkb_state.state,
 937                               get_xkb_mod_mask(c, state->baseMods),
 938                               get_xkb_mod_mask(c, state->latchedMods),
 939                               get_xkb_mod_mask(c, state->lockedMods),
 940                               0,
 941                               0,
 942                               state->group);
 943
 944         notify_modifiers(&c->core_seat,
 945                          wl_display_next_serial(c->base.wl_display));
 946 }
 947 #endif
 948
 949 /**
 950  * This is monumentally unpleasant.  If we don't have XCB-XKB bindings,
 951  * the best we can do (given that XCB also lacks XI2 support), is to take
 952  * the state from the core key events.  Unfortunately that only gives us
 953  * the effective (i.e. union of depressed/latched/locked) state, and we
 954  * need the granularity.
 955  *
 956  * So we still update the state with every key event we see, but also use
 957  * the state field from X11 events as a mask so we don't get any stuck
 958  * modifiers.
 959  */
 960 static void
 961 update_xkb_state_from_core(struct x11_compositor *c, uint16_t x11_mask)
 962 {
 963         uint32_t mask = get_xkb_mod_mask(c, x11_mask);
 964         struct weston_keyboard *keyboard = c->core_seat.keyboard;
 965
 966         xkb_state_update_mask(c->core_seat.keyboard->xkb_state.state,
 967                               keyboard->modifiers.mods_depressed & mask,
 968                               keyboard->modifiers.mods_latched & mask,
 969                               keyboard->modifiers.mods_locked & mask,
 970                               0,
 971                               0,
 972                               (x11_mask >> 13) & 3);
 973         notify_modifiers(&c->core_seat,
 974                          wl_display_next_serial(c->base.wl_display));
 975 }
 976
 977 static void
 978 x11_compositor_deliver_button_event(struct x11_compositor *c,
 979                                     xcb_generic_event_t *event, int state)
 980 {
 981         xcb_button_press_event_t *button_event =
 982                 (xcb_button_press_event_t *) event;
 983         uint32_t button;
 984         struct x11_output *output;
 985
 986         output = x11_compositor_find_output(c, button_event->event);
 987
 988         if (state)
 989                 xcb_grab_pointer(c->conn, 0, output->window,
 990                                  XCB_EVENT_MASK_BUTTON_PRESS |
 991                                  XCB_EVENT_MASK_BUTTON_RELEASE |
 992                                  XCB_EVENT_MASK_POINTER_MOTION |
 993                                  XCB_EVENT_MASK_ENTER_WINDOW |
 994                                  XCB_EVENT_MASK_LEAVE_WINDOW,
 995                                  XCB_GRAB_MODE_ASYNC,
 996                                  XCB_GRAB_MODE_ASYNC,
 997                                  output->window, XCB_CURSOR_NONE,
 998                                  button_event->time);
 999         else
1000                 xcb_ungrab_pointer(c->conn, button_event->time);
1001
1002         if (!c->has_xkb)
1003                 update_xkb_state_from_core(c, button_event->state);
1004
1005         switch (button_event->detail) {
1006         default:
1007                 button = button_event->detail + BTN_LEFT - 1;
1008                 break;
1009         case 2:
1010                 button = BTN_MIDDLE;
1011                 break;
1012         case 3:
1013                 button = BTN_RIGHT;
1014                 break;
1015         case 4:
1016                 /* Axis are measured in pixels, but the xcb events are discrete
1017                  * steps. Therefore move the axis by some pixels every step. */
1018                 if (state)
1019                         notify_axis(&c->core_seat,
1020                                     weston_compositor_get_time(),
1021                                     WL_POINTER_AXIS_VERTICAL_SCROLL,
1022                                     -DEFAULT_AXIS_STEP_DISTANCE);
1023                 return;
1024         case 5:
1025                 if (state)
1026                         notify_axis(&c->core_seat,
1027                                     weston_compositor_get_time(),
1028                                     WL_POINTER_AXIS_VERTICAL_SCROLL,
1029                                     DEFAULT_AXIS_STEP_DISTANCE);
1030                 return;
1031         case 6:
1032                 if (state)
1033                         notify_axis(&c->core_seat,
1034                                     weston_compositor_get_time(),
1035                                     WL_POINTER_AXIS_HORIZONTAL_SCROLL,
1036                                     -DEFAULT_AXIS_STEP_DISTANCE);
1037                 return;
1038         case 7:
1039                 if (state)
1040                         notify_axis(&c->core_seat,
1041                                     weston_compositor_get_time(),
1042                                     WL_POINTER_AXIS_HORIZONTAL_SCROLL,
1043                                     DEFAULT_AXIS_STEP_DISTANCE);
1044                 return;
1045         }
1046
1047         notify_button(&c->core_seat,
1048                       weston_compositor_get_time(), button,
1049                       state ? WL_POINTER_BUTTON_STATE_PRESSED :
1050                               WL_POINTER_BUTTON_STATE_RELEASED);
1051 }
1052
1053 static void
1054 x11_compositor_deliver_motion_event(struct x11_compositor *c,
1055                                         xcb_generic_event_t *event)
1056 {
1057         struct x11_output *output;
1058         wl_fixed_t x, y;
1059         xcb_motion_notify_event_t *motion_notify =
1060                         (xcb_motion_notify_event_t *) event;
1061
1062         if (!c->has_xkb)
1063                 update_xkb_state_from_core(c, motion_notify->state);
1064         output = x11_compositor_find_output(c, motion_notify->event);
1065         weston_output_transform_coordinate(&output->base,
1066                                            wl_fixed_from_int(motion_notify->event_x),
1067                                            wl_fixed_from_int(motion_notify->event_y),
1068                                            &x, &y);
1069
1070         notify_motion(&c->core_seat, weston_compositor_get_time(),
1071                       x - c->prev_x, y - c->prev_y);
1072
1073         c->prev_x = x;
1074         c->prev_y = y;
1075 }
1076
1077 static void
1078 x11_compositor_deliver_enter_event(struct x11_compositor *c,
1079                                         xcb_generic_event_t *event)
1080 {
1081         struct x11_output *output;
1082         wl_fixed_t x, y;
1083
1084         xcb_enter_notify_event_t *enter_notify =
1085                         (xcb_enter_notify_event_t *) event;
1086         if (enter_notify->state >= Button1Mask)
1087                 return;
1088         if (!c->has_xkb)
1089                 update_xkb_state_from_core(c, enter_notify->state);
1090         output = x11_compositor_find_output(c, enter_notify->event);
1091         weston_output_transform_coordinate(&output->base,
1092                                            wl_fixed_from_int(enter_notify->event_x),
1093                                            wl_fixed_from_int(enter_notify->event_y), &x, &y);
1094
1095         notify_pointer_focus(&c->core_seat, &output->base, x, y);
1096
1097         c->prev_x = x;
1098         c->prev_y = y;
1099 }
1100
1101 static int
1102 x11_compositor_next_event(struct x11_compositor *c,
1103                           xcb_generic_event_t **event, uint32_t mask)
1104 {
1105         if (mask & WL_EVENT_READABLE) {
1106                 *event = xcb_poll_for_event(c->conn);
1107         } else {
1108 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
1109                 *event = xcb_poll_for_queued_event(c->conn);
1110 #else
1111                 *event = xcb_poll_for_event(c->conn);
1112 #endif
1113         }
1114
1115         return *event != NULL;
1116 }
1117
1118 static int
1119 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
1120 {
1121         struct x11_compositor *c = data;
1122         struct x11_output *output;
1123         xcb_generic_event_t *event, *prev;
1124         xcb_client_message_event_t *client_message;
1125         xcb_enter_notify_event_t *enter_notify;
1126         xcb_key_press_event_t *key_press, *key_release;
1127         xcb_keymap_notify_event_t *keymap_notify;
1128         xcb_focus_in_event_t *focus_in;
1129         xcb_expose_event_t *expose;
1130         xcb_atom_t atom;
1131         xcb_window_t window;
1132         uint32_t *k;
1133         uint32_t i, set;
1134         uint8_t response_type;
1135         int count;
1136
1137         prev = NULL;
1138         count = 0;
1139         while (x11_compositor_next_event(c, &event, mask)) {
1140                 response_type = event->response_type & ~0x80;
1141
1142                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
1143                 case XCB_KEY_RELEASE:
1144                         /* Suppress key repeat events; this is only used if we
1145                          * don't have XCB XKB support. */
1146                         key_release = (xcb_key_press_event_t *) prev;
1147                         key_press = (xcb_key_press_event_t *) event;
1148                         if (response_type == XCB_KEY_PRESS &&
1149                             key_release->time == key_press->time &&
1150                             key_release->detail == key_press->detail) {
1151                                 /* Don't deliver the held key release
1152                                  * event or the new key press event. */
1153                                 free(event);
1154                                 free(prev);
1155                                 prev = NULL;
1156                                 continue;
1157                         } else {
1158                                 /* Deliver the held key release now
1159                                  * and fall through and handle the new
1160                                  * event below. */
1161                                 update_xkb_state_from_core(c, key_release->state);
1162                                 notify_key(&c->core_seat,
1163                                            weston_compositor_get_time(),
1164                                            key_release->detail - 8,
1165                                            WL_KEYBOARD_KEY_STATE_RELEASED,
1166                                            STATE_UPDATE_AUTOMATIC);
1167                                 free(prev);
1168                                 prev = NULL;
1169                                 break;
1170                         }
1171
1172                 case XCB_FOCUS_IN:
1173                         assert(response_type == XCB_KEYMAP_NOTIFY);
1174                         keymap_notify = (xcb_keymap_notify_event_t *) event;
1175                         c->keys.size = 0;
1176                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
1177                                 set = keymap_notify->keys[i >> 3] &
1178                                         (1 << (i & 7));
1179                                 if (set) {
1180                                         k = wl_array_add(&c->keys, sizeof *k);
1181                                         *k = i;
1182                                 }
1183                         }
1184
1185                         /* Unfortunately the state only comes with the enter
1186                          * event, rather than with the focus event.  I'm not
1187                          * sure of the exact semantics around it and whether
1188                          * we can ensure that we get both? */
1189                         notify_keyboard_focus_in(&c->core_seat, &c->keys,
1190                                                  STATE_UPDATE_AUTOMATIC);
1191
1192                         free(prev);
1193                         prev = NULL;
1194                         break;
1195
1196                 default:
1197                         /* No previous event held */
1198                         break;
1199                 }
1200
1201                 switch (response_type) {
1202                 case XCB_KEY_PRESS:
1203                         key_press = (xcb_key_press_event_t *) event;
1204                         if (!c->has_xkb)
1205                                 update_xkb_state_from_core(c, key_press->state);
1206                         notify_key(&c->core_seat,
1207                                    weston_compositor_get_time(),
1208                                    key_press->detail - 8,
1209                                    WL_KEYBOARD_KEY_STATE_PRESSED,
1210                                    c->has_xkb ? STATE_UPDATE_NONE :
1211                                                 STATE_UPDATE_AUTOMATIC);
1212                         break;
1213                 case XCB_KEY_RELEASE:
1214                         /* If we don't have XKB, we need to use the lame
1215                          * autorepeat detection above. */
1216                         if (!c->has_xkb) {
1217                                 prev = event;
1218                                 break;
1219                         }
1220                         key_release = (xcb_key_press_event_t *) event;
1221                         notify_key(&c->core_seat,
1222                                    weston_compositor_get_time(),
1223                                    key_release->detail - 8,
1224                                    WL_KEYBOARD_KEY_STATE_RELEASED,
1225                                    STATE_UPDATE_NONE);
1226                         break;
1227                 case XCB_BUTTON_PRESS:
1228                         x11_compositor_deliver_button_event(c, event, 1);
1229                         break;
1230                 case XCB_BUTTON_RELEASE:
1231                         x11_compositor_deliver_button_event(c, event, 0);
1232                         break;
1233                 case XCB_MOTION_NOTIFY:
1234                         x11_compositor_deliver_motion_event(c, event);
1235                         break;
1236
1237                 case XCB_EXPOSE:
1238                         expose = (xcb_expose_event_t *) event;
1239                         output = x11_compositor_find_output(c, expose->window);
1240                         weston_output_damage(&output->base);
1241                         weston_output_schedule_repaint(&output->base);
1242                         break;
1243
1244                 case XCB_ENTER_NOTIFY:
1245                         x11_compositor_deliver_enter_event(c, event);
1246                         break;
1247
1248                 case XCB_LEAVE_NOTIFY:
1249                         enter_notify = (xcb_enter_notify_event_t *) event;
1250                         if (enter_notify->state >= Button1Mask)
1251                                 break;
1252                         if (!c->has_xkb)
1253                                 update_xkb_state_from_core(c, enter_notify->state);
1254                         notify_pointer_focus(&c->core_seat, NULL, 0, 0);
1255                         break;
1256
1257                 case XCB_CLIENT_MESSAGE:
1258                         client_message = (xcb_client_message_event_t *) event;
1259                         atom = client_message->data.data32[0];
1260                         window = client_message->window;
1261                         if (atom == c->atom.wm_delete_window)
1262                                 x11_compositor_delete_window(c, window);
1263                         break;
1264
1265                 case XCB_FOCUS_IN:
1266                         focus_in = (xcb_focus_in_event_t *) event;
1267                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
1268                                 break;
1269
1270                         prev = event;
1271                         break;
1272
1273                 case XCB_FOCUS_OUT:
1274                         focus_in = (xcb_focus_in_event_t *) event;
1275                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
1276                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
1277                                 break;
1278                         notify_keyboard_focus_out(&c->core_seat);
1279                         break;
1280
1281                 default:
1282                         break;
1283                 }
1284
1285 #ifdef HAVE_XCB_XKB
1286                 if (c->has_xkb) {
1287                         if (response_type == c->xkb_event_base) {
1288                                 xcb_xkb_state_notify_event_t *state =
1289                                         (xcb_xkb_state_notify_event_t *) event;
1290                                 if (state->xkbType == XCB_XKB_STATE_NOTIFY)
1291                                         update_xkb_state(c, state);
1292                         } else if (response_type == XCB_PROPERTY_NOTIFY) {
1293                                 xcb_property_notify_event_t *prop_notify =
1294                                         (xcb_property_notify_event_t *) event;
1295                                 if (prop_notify->window == c->screen->root &&
1296                                     prop_notify->atom == c->atom.xkb_names &&
1297                                     prop_notify->state == XCB_PROPERTY_NEW_VALUE)
1298                                         update_xkb_keymap(c);
1299                         }
1300                 }
1301 #endif
1302
1303                 count++;
1304                 if (prev != event)
1305                         free (event);
1306         }
1307
1308         switch (prev ? prev->response_type & ~0x80 : 0x80) {
1309         case XCB_KEY_RELEASE:
1310                 key_release = (xcb_key_press_event_t *) prev;
1311                 update_xkb_state_from_core(c, key_release->state);
1312                 notify_key(&c->core_seat,
1313                            weston_compositor_get_time(),
1314                            key_release->detail - 8,
1315                            WL_KEYBOARD_KEY_STATE_RELEASED,
1316                            STATE_UPDATE_AUTOMATIC);
1317                 free(prev);
1318                 prev = NULL;
1319                 break;
1320         default:
1321                 break;
1322         }
1323
1324         return count;
1325 }
1326
1327 #define F(field) offsetof(struct x11_compositor, field)
1328
1329 static void
1330 x11_compositor_get_resources(struct x11_compositor *c)
1331 {
1332         static const struct { const char *name; int offset; } atoms[] = {
1333                 { "WM_PROTOCOLS",       F(atom.wm_protocols) },
1334                 { "WM_NORMAL_HINTS",    F(atom.wm_normal_hints) },
1335                 { "WM_SIZE_HINTS",      F(atom.wm_size_hints) },
1336                 { "WM_DELETE_WINDOW",   F(atom.wm_delete_window) },
1337                 { "WM_CLASS",           F(atom.wm_class) },
1338                 { "_NET_WM_NAME",       F(atom.net_wm_name) },
1339                 { "_NET_WM_ICON",       F(atom.net_wm_icon) },
1340                 { "_NET_WM_STATE",      F(atom.net_wm_state) },
1341                 { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
1342                 { "_NET_SUPPORTING_WM_CHECK",
1343                                         F(atom.net_supporting_wm_check) },
1344                 { "_NET_SUPPORTED",     F(atom.net_supported) },
1345                 { "STRING",             F(atom.string) },
1346                 { "UTF8_STRING",        F(atom.utf8_string) },
1347                 { "CARDINAL",           F(atom.cardinal) },
1348                 { "_XKB_RULES_NAMES",   F(atom.xkb_names) },
1349         };
1350
1351         xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
1352         xcb_intern_atom_reply_t *reply;
1353         xcb_pixmap_t pixmap;
1354         xcb_gc_t gc;
1355         unsigned int i;
1356         uint8_t data[] = { 0, 0, 0, 0 };
1357
1358         for (i = 0; i < ARRAY_LENGTH(atoms); i++)
1359                 cookies[i] = xcb_intern_atom (c->conn, 0,
1360                                               strlen(atoms[i].name),
1361                                               atoms[i].name);
1362
1363         for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
1364                 reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
1365                 *(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
1366                 free(reply);
1367         }
1368
1369         pixmap = xcb_generate_id(c->conn);
1370         gc = xcb_generate_id(c->conn);
1371         xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
1372         xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
1373         xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
1374                       pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
1375         c->null_cursor = xcb_generate_id(c->conn);
1376         xcb_create_cursor (c->conn, c->null_cursor,
1377                            pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
1378         xcb_free_gc(c->conn, gc);
1379         xcb_free_pixmap(c->conn, pixmap);
1380 }
1381
1382 static void
1383 x11_compositor_get_wm_info(struct x11_compositor *c)
1384 {
1385         xcb_get_property_cookie_t cookie;
1386         xcb_get_property_reply_t *reply;
1387         xcb_atom_t *atom;
1388         unsigned int i;
1389
1390         cookie = xcb_get_property(c->conn, 0, c->screen->root,
1391                                   c->atom.net_supported,
1392                                   XCB_ATOM_ATOM, 0, 1024);
1393         reply = xcb_get_property_reply(c->conn, cookie, NULL);
1394         if (reply == NULL)
1395                 return;
1396
1397         atom = (xcb_atom_t *) xcb_get_property_value(reply);
1398
1399         for (i = 0; i < reply->value_len; i++) {
1400                 if (atom[i] == c->atom.net_wm_state_fullscreen)
1401                         c->has_net_wm_state_fullscreen = 1;
1402         }
1403 }
1404
1405 static void
1406 x11_restore(struct weston_compositor *ec)
1407 {
1408 }
1409
1410 static void
1411 x11_destroy(struct weston_compositor *ec)
1412 {
1413         struct x11_compositor *compositor = (struct x11_compositor *)ec;
1414
1415         wl_event_source_remove(compositor->xcb_source);
1416         x11_input_destroy(compositor);
1417
1418         ec->renderer->destroy(ec);
1419
1420         weston_compositor_shutdown(ec); /* destroys outputs, too */
1421
1422         XCloseDisplay(compositor->dpy);
1423         free(ec);
1424 }
1425
1426 static uint32_t
1427 parse_transform(const char *transform, const char *output_name)
1428 {
1429         static const struct { const char *name; uint32_t token; } names[] = {
1430                 { "normal",     WL_OUTPUT_TRANSFORM_NORMAL },
1431                 { "90",         WL_OUTPUT_TRANSFORM_90 },
1432                 { "180",        WL_OUTPUT_TRANSFORM_180 },
1433                 { "270",        WL_OUTPUT_TRANSFORM_270 },
1434                 { "flipped",    WL_OUTPUT_TRANSFORM_FLIPPED },
1435                 { "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
1436                 { "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
1437                 { "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
1438         };
1439         unsigned int i;
1440
1441         for (i = 0; i < ARRAY_LENGTH(names); i++)
1442                 if (strcmp(names[i].name, transform) == 0)
1443                         return names[i].token;
1444
1445         weston_log("Invalid transform \"%s\" for output %s\n",
1446                    transform, output_name);
1447
1448         return WL_OUTPUT_TRANSFORM_NORMAL;
1449 }
1450
1451 static int
1452 init_gl_renderer(struct x11_compositor *c)
1453 {
1454         int ret;
1455
1456         gl_renderer = weston_load_module("gl-renderer.so",
1457                                          "gl_renderer_interface");
1458         if (!gl_renderer)
1459                 return -1;
1460
1461         ret = gl_renderer->create(&c->base, (EGLNativeDisplayType) c->dpy,
1462                                   gl_renderer->opaque_attribs, NULL);
1463
1464         return ret;
1465 }
1466 static struct weston_compositor *
1467 x11_compositor_create(struct wl_display *display,
1468                       int fullscreen,
1469                       int no_input,
1470                       int use_pixman,
1471                       int *argc, char *argv[],
1472                       struct weston_config *config)
1473 {
1474         struct x11_compositor *c;
1475         struct x11_output *output;
1476         struct weston_config_section *section;
1477         xcb_screen_iterator_t s;
1478         int i, x = 0, output_count = 0;
1479         int width, height, count, scale;
1480         const char *section_name;
1481         char *name, *t, *mode;
1482         uint32_t transform;
1483
1484         weston_log("initializing x11 backend\n");
1485
1486         c = zalloc(sizeof *c);
1487         if (c == NULL)
1488                 return NULL;
1489
1490         if (weston_compositor_init(&c->base, display, argc, argv, config) < 0)
1491                 goto err_free;
1492
1493         c->dpy = XOpenDisplay(NULL);
1494         if (c->dpy == NULL)
1495                 goto err_free;
1496
1497         c->conn = XGetXCBConnection(c->dpy);
1498         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
1499
1500         if (xcb_connection_has_error(c->conn))
1501                 goto err_xdisplay;
1502
1503         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
1504         c->screen = s.data;
1505         wl_array_init(&c->keys);
1506
1507         x11_compositor_get_resources(c);
1508         x11_compositor_get_wm_info(c);
1509
1510         if (!c->has_net_wm_state_fullscreen && fullscreen) {
1511                 weston_log("Can not fullscreen without window manager support"
1512                            "(need _NET_WM_STATE_FULLSCREEN)\n");
1513                 fullscreen = 0;
1514         }
1515
1516         c->base.wl_display = display;
1517         c->use_pixman = use_pixman;
1518         if (c->use_pixman) {
1519                 if (pixman_renderer_init(&c->base) < 0)
1520                         goto err_xdisplay;
1521         }
1522         else if (init_gl_renderer(c) < 0) {
1523                 goto err_xdisplay;
1524         }
1525         weston_log("Using %s renderer\n", use_pixman ? "pixman" : "gl");
1526
1527         c->base.destroy = x11_destroy;
1528         c->base.restore = x11_restore;
1529
1530         if (x11_input_create(c, no_input) < 0)
1531                 goto err_renderer;
1532
1533         width = option_width ? option_width : 1024;
1534         height = option_height ? option_height : 640;
1535         count = option_count ? option_count : 1;
1536
1537         section = NULL;
1538         while (weston_config_next_section(c->base.config,
1539                                           &section, &section_name)) {
1540                 if (strcmp(section_name, "output") != 0)
1541                         continue;
1542                 weston_config_section_get_string(section, "name", &name, NULL);
1543                 if (name == NULL || name[0] != 'X') {
1544                         free(name);
1545                         continue;
1546                 }
1547
1548                 weston_config_section_get_string(section,
1549                                                  "mode", &mode, "1024x600");
1550                 if (sscanf(mode, "%dx%d", &width, &height) != 2) {
1551                         weston_log("Invalid mode \"%s\" for output %s\n",
1552                                    mode, name);
1553                         width = 1024;
1554                         height = 600;
1555                 }
1556                 free(mode);
1557
1558                 if (option_width)
1559                         width = option_width;
1560                 if (option_height)
1561                         height = option_height;
1562
1563                 weston_config_section_get_int(section, "scale", &scale, 1);
1564                 weston_config_section_get_string(section,
1565                                                  "transform", &t, "normal");
1566                 transform = parse_transform(t, name);
1567                 free(t);
1568
1569                 output = x11_compositor_create_output(c, x, 0,
1570                                                       width, height,
1571                                                       fullscreen, no_input,
1572                                                       name, transform, scale);
1573                 free(name);
1574                 if (output == NULL)
1575                         goto err_x11_input;
1576
1577                 x = pixman_region32_extents(&output->base.region)->x2;
1578
1579                 output_count++;
1580                 if (option_count && output_count >= option_count)
1581                         break;
1582         }
1583
1584         for (i = output_count; i < count; i++) {
1585                 output = x11_compositor_create_output(c, x, 0, width, height,
1586                                                       fullscreen, no_input, NULL,
1587                                                       WL_OUTPUT_TRANSFORM_NORMAL, 1);
1588                 if (output == NULL)
1589                         goto err_x11_input;
1590                 x = pixman_region32_extents(&output->base.region)->x2;
1591         }
1592
1593         c->xcb_source =
1594                 wl_event_loop_add_fd(c->base.input_loop,
1595                                      xcb_get_file_descriptor(c->conn),
1596                                      WL_EVENT_READABLE,
1597                                      x11_compositor_handle_event, c);
1598         wl_event_source_check(c->xcb_source);
1599
1600         return &c->base;
1601
1602 err_x11_input:
1603         x11_input_destroy(c);
1604 err_renderer:
1605         c->base.renderer->destroy(&c->base);
1606 err_xdisplay:
1607         XCloseDisplay(c->dpy);
1608 err_free:
1609         free(c);
1610         return NULL;
1611 }
1612
1613 WL_EXPORT struct weston_compositor *
1614 backend_init(struct wl_display *display, int *argc, char *argv[],
1615              struct weston_config *config)
1616 {
1617         int fullscreen = 0;
1618         int no_input = 0;
1619         int use_pixman = 0;
1620
1621         const struct weston_option x11_options[] = {
1622                 { WESTON_OPTION_INTEGER, "width", 0, &option_width },
1623                 { WESTON_OPTION_INTEGER, "height", 0, &option_height },
1624                 { WESTON_OPTION_BOOLEAN, "fullscreen", 'f', &fullscreen },
1625                 { WESTON_OPTION_INTEGER, "output-count", 0, &option_count },
1626                 { WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
1627                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
1628         };
1629
1630         parse_options(x11_options, ARRAY_LENGTH(x11_options), argc, argv);
1631
1632         return x11_compositor_create(display,
1633                                      fullscreen,
1634                                      no_input,
1635                                      use_pixman,
1636                                      argc, argv, config);
1637 }