src/compositor-x11.c

   1 /*
   2  * Copyright © 2008-2011 Kristian Høgsberg
   3  * Copyright © 2010-2011 Intel Corporation
   4  * Copyright © 2013 Vasily Khoruzhick <anarsoul@gmail.com>
   5  *
   6  * Permission to use, copy, modify, distribute, and sell this software and
   7  * its documentation for any purpose is hereby granted without fee, provided
   8  * that the above copyright notice appear in all copies and that both that
   9  * copyright notice and this permission notice appear in supporting
  10  * documentation, and that the name of the copyright holders not be used in
  11  * advertising or publicity pertaining to distribution of the software
  12  * without specific, written prior permission.  The copyright holders make
  13  * no representations about the suitability of this software for any
  14  * purpose.  It is provided "as is" without express or implied warranty.
  15  *
  16  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  17  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  18  * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  19  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  20  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  21  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  22  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <assert.h>
  30 #include <stddef.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <fcntl.h>
  34 #include <unistd.h>
  35 #include <errno.h>
  36 #include <sys/time.h>
  37 #include <sys/shm.h>
  38 #include <linux/input.h>
  39
  40 #include <xcb/xcb.h>
  41 #include <xcb/shm.h>
  42 #ifdef HAVE_XCB_XKB
  43 #include <xcb/xkb.h>
  44 #endif
  45
  46 #include <X11/Xlib.h>
  47 #include <X11/Xlib-xcb.h>
  48
  49 #include <xkbcommon/xkbcommon.h>
  50
  51 #include "compositor.h"
  52 #include "gl-renderer.h"
  53 #include "pixman-renderer.h"
  54 #include "../shared/config-parser.h"
  55 #include "../shared/image-loader.h"
  56
  57 #define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int(10)
  58
  59 static int option_width;
  60 static int option_height;
  61 static int option_count;
  62
  63 struct x11_compositor {
  64         struct weston_compositor         base;
  65
  66         Display                 *dpy;
  67         xcb_connection_t        *conn;
  68         xcb_screen_t            *screen;
  69         xcb_cursor_t             null_cursor;
  70         struct wl_array          keys;
  71         struct wl_event_source  *xcb_source;
  72         struct xkb_keymap       *xkb_keymap;
  73         unsigned int             has_xkb;
  74         uint8_t                  xkb_event_base;
  75         int                      use_pixman;
  76
  77         int                      has_net_wm_state_fullscreen;
  78
  79         /* We could map multi-pointer X to multiple wayland seats, but
  80          * for now we only support core X input. */
  81         struct weston_seat               core_seat;
  82         wl_fixed_t                       prev_x;
  83         wl_fixed_t                       prev_y;
  84
  85         struct {
  86                 xcb_atom_t               wm_protocols;
  87                 xcb_atom_t               wm_normal_hints;
  88                 xcb_atom_t               wm_size_hints;
  89                 xcb_atom_t               wm_delete_window;
  90                 xcb_atom_t               wm_class;
  91                 xcb_atom_t               net_wm_name;
  92                 xcb_atom_t               net_supporting_wm_check;
  93                 xcb_atom_t               net_supported;
  94                 xcb_atom_t               net_wm_icon;
  95                 xcb_atom_t               net_wm_state;
  96                 xcb_atom_t               net_wm_state_fullscreen;
  97                 xcb_atom_t               string;
  98                 xcb_atom_t               utf8_string;
  99                 xcb_atom_t               cardinal;
 100                 xcb_atom_t               xkb_names;
 101         } atom;
 102 };
 103
 104 struct x11_output {
 105         struct weston_output    base;
 106
 107         xcb_window_t            window;
 108         struct weston_mode      mode;
 109         struct wl_event_source *finish_frame_timer;
 110
 111         xcb_gc_t                gc;
 112         xcb_shm_seg_t           segment;
 113         pixman_image_t         *hw_surface;
 114         int                     shm_id;
 115         void                   *buf;
 116         uint8_t                 depth;
 117         uint32_t                scale;
 118 };
 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.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
 207         c->has_xkb = 0;
 208         c->xkb_event_base = 0;
 209
 210         ext = xcb_get_extension_data(c->conn, &xcb_xkb_id);
 211         if (!ext) {
 212                 weston_log("XKB extension not available on host X11 server\n");
 213                 return;
 214         }
 215         c->xkb_event_base = ext->first_event;
 216
 217         select = xcb_xkb_select_events_checked(c->conn,
 218                                                XCB_XKB_ID_USE_CORE_KBD,
 219                                                XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
 220                                                0,
 221                                                XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
 222                                                0,
 223                                                0,
 224                                                NULL);
 225         error = xcb_request_check(c->conn, select);
 226         if (error) {
 227                 weston_log("error: failed to select for XKB state events\n");
 228                 free(error);
 229                 return;
 230         }
 231
 232         use_ext = xcb_xkb_use_extension(c->conn,
 233                                         XCB_XKB_MAJOR_VERSION,
 234                                         XCB_XKB_MINOR_VERSION);
 235         use_ext_reply = xcb_xkb_use_extension_reply(c->conn, use_ext, NULL);
 236         if (!use_ext_reply) {
 237                 weston_log("couldn't start using XKB extension\n");
 238                 return;
 239         }
 240
 241         if (!use_ext_reply->supported) {
 242                 weston_log("XKB extension version on the server is too old "
 243                            "(want %d.%d, has %d.%d)\n",
 244                            XCB_XKB_MAJOR_VERSION, XCB_XKB_MINOR_VERSION,
 245                            use_ext_reply->serverMajor, use_ext_reply->serverMinor);
 246                 free(use_ext_reply);
 247                 return;
 248         }
 249         free(use_ext_reply);
 250
 251         pcf = xcb_xkb_per_client_flags(c->conn,
 252                                        XCB_XKB_ID_USE_CORE_KBD,
 253                                        XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
 254                                        XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
 255                                        0,
 256                                        0,
 257                                        0);
 258         pcf_reply = xcb_xkb_per_client_flags_reply(c->conn, pcf, NULL);
 259         if (!pcf_reply ||
 260             !(pcf_reply->value & XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT)) {
 261                 weston_log("failed to set XKB per-client flags, not using "
 262                            "detectable repeat\n");
 263                 free(pcf_reply);
 264                 return;
 265         }
 266         free(pcf_reply);
 267
 268         state = xcb_xkb_get_state(c->conn, XCB_XKB_ID_USE_CORE_KBD);
 269         state_reply = xcb_xkb_get_state_reply(c->conn, state, NULL);
 270         if (!state_reply) {
 271                 weston_log("failed to get initial XKB state\n");
 272                 return;
 273         }
 274
 275         xkb_state_update_mask(c->core_seat.xkb_state.state,
 276                               get_xkb_mod_mask(c, state_reply->baseMods),
 277                               get_xkb_mod_mask(c, state_reply->latchedMods),
 278                               get_xkb_mod_mask(c, state_reply->lockedMods),
 279                               0,
 280                               0,
 281                               state_reply->group);
 282
 283         free(state_reply);
 284
 285         c->has_xkb = 1;
 286 #endif
 287 }
 288
 289 static int
 290 x11_input_create(struct x11_compositor *c, int no_input)
 291 {
 292         struct xkb_keymap *keymap;
 293
 294         weston_seat_init(&c->core_seat, &c->base);
 295
 296         if (no_input)
 297                 return 0;
 298
 299         weston_seat_init_pointer(&c->core_seat);
 300
 301         keymap = x11_compositor_get_keymap(c);
 302         if (weston_seat_init_keyboard(&c->core_seat, keymap) < 0)
 303                 return -1;
 304         if (keymap)
 305                 xkb_map_unref(keymap);
 306
 307         x11_compositor_setup_xkb(c);
 308
 309         return 0;
 310 }
 311
 312 static void
 313 x11_input_destroy(struct x11_compositor *compositor)
 314 {
 315         weston_seat_release(&compositor->core_seat);
 316 }
 317
 318 static void
 319 x11_output_start_repaint_loop(struct weston_output *output)
 320 {
 321         uint32_t msec;
 322         struct timeval tv;
 323
 324         gettimeofday(&tv, NULL);
 325         msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
 326         weston_output_finish_frame(output, msec);
 327 }
 328
 329 static void
 330 x11_output_repaint_gl(struct weston_output *output_base,
 331                       pixman_region32_t *damage)
 332 {
 333         struct x11_output *output = (struct x11_output *)output_base;
 334         struct weston_compositor *ec = output->base.compositor;
 335
 336         ec->renderer->repaint_output(output_base, damage);
 337
 338         pixman_region32_subtract(&ec->primary_plane.damage,
 339                                  &ec->primary_plane.damage, damage);
 340
 341         wl_event_source_timer_update(output->finish_frame_timer, 10);
 342 }
 343
 344 static void
 345 set_clip_for_output(struct weston_output *output_base, pixman_region32_t *region)
 346 {
 347         struct x11_output *output = (struct x11_output *)output_base;
 348         struct weston_compositor *ec = output->base.compositor;
 349         struct x11_compositor *c = (struct x11_compositor *)ec;
 350         pixman_box32_t *rects;
 351         xcb_rectangle_t *output_rects;
 352         pixman_box32_t rect, transformed_rect;
 353         xcb_void_cookie_t cookie;
 354         int width, height, nrects, i;
 355         xcb_generic_error_t *err;
 356
 357         rects = pixman_region32_rectangles(region, &nrects);
 358         output_rects = calloc(nrects, sizeof(xcb_rectangle_t));
 359
 360         if (output_rects == NULL)
 361                 return;
 362
 363         width = output_base->width;
 364         height = output_base->height;
 365
 366         for (i = 0; i < nrects; i++) {
 367                 rect = rects[i];
 368                 rect.x1 -= output_base->x;
 369                 rect.y1 -= output_base->y;
 370                 rect.x2 -= output_base->x;
 371                 rect.y2 -= output_base->y;
 372
 373                 switch (output_base->transform) {
 374                 default:
 375                 case WL_OUTPUT_TRANSFORM_NORMAL:
 376                         transformed_rect.x1 = rect.x1;
 377                         transformed_rect.y1 = rect.y1;
 378                         transformed_rect.x2 = rect.x2;
 379                         transformed_rect.y2 = rect.y2;
 380                         break;
 381                 case WL_OUTPUT_TRANSFORM_90:
 382                         transformed_rect.x1 = height - rect.y2;
 383                         transformed_rect.y1 = rect.x1;
 384                         transformed_rect.x2 = height - rect.y1;
 385                         transformed_rect.y2 = rect.x2;
 386                         break;
 387                 case WL_OUTPUT_TRANSFORM_180:
 388                         transformed_rect.x1 = width - rect.x2;
 389                         transformed_rect.y1 = height - rect.y2;
 390                         transformed_rect.x2 = width - rect.x1;
 391                         transformed_rect.y2 = height - rect.y1;
 392                         break;
 393                 case WL_OUTPUT_TRANSFORM_270:
 394                         transformed_rect.x1 = rect.y1;
 395                         transformed_rect.y1 = width - rect.x2;
 396                         transformed_rect.x2 = rect.y2;
 397                         transformed_rect.y2 = width - rect.x1;
 398                         break;
 399                 case WL_OUTPUT_TRANSFORM_FLIPPED:
 400                         transformed_rect.x1 = width - rect.x2;
 401                         transformed_rect.y1 = rect.y1;
 402                         transformed_rect.x2 = width - rect.x1;
 403                         transformed_rect.y2 = rect.y2;
 404                         break;
 405                 case WL_OUTPUT_TRANSFORM_FLIPPED_90:
 406                         transformed_rect.x1 = height - rect.y2;
 407                         transformed_rect.y1 = width - rect.x2;
 408                         transformed_rect.x2 = height - rect.y1;
 409                         transformed_rect.y2 = width - rect.x1;
 410                         break;
 411                 case WL_OUTPUT_TRANSFORM_FLIPPED_180:
 412                         transformed_rect.x1 = rect.x1;
 413                         transformed_rect.y1 = height - rect.y2;
 414                         transformed_rect.x2 = rect.x2;
 415                         transformed_rect.y2 = height - rect.y1;
 416                         break;
 417                 case WL_OUTPUT_TRANSFORM_FLIPPED_270:
 418                         transformed_rect.x1 = rect.y1;
 419                         transformed_rect.y1 = rect.x1;
 420                         transformed_rect.x2 = rect.y2;
 421                         transformed_rect.y2 = rect.x2;
 422                         break;
 423                 }
 424
 425                 transformed_rect.x1 *= output_base->scale;
 426                 transformed_rect.y1 *= output_base->scale;
 427                 transformed_rect.x2 *= output_base->scale;
 428                 transformed_rect.y2 *= output_base->scale;
 429
 430                 output_rects[i].x = transformed_rect.x1;
 431                 output_rects[i].y = transformed_rect.y1;
 432                 output_rects[i].width = transformed_rect.x2 - transformed_rect.x1;
 433                 output_rects[i].height = transformed_rect.y2 - transformed_rect.y1;
 434         }
 435
 436         cookie = xcb_set_clip_rectangles_checked(c->conn, XCB_CLIP_ORDERING_UNSORTED,
 437                                         output->gc,
 438                                         0, 0, nrects,
 439                                         output_rects);
 440         err = xcb_request_check(c->conn, cookie);
 441         if (err != NULL) {
 442                 weston_log("Failed to set clip rects, err: %d\n", err->error_code);
 443                 free(err);
 444         }
 445         free(output_rects);
 446 }
 447
 448
 449 static void
 450 x11_output_repaint_shm(struct weston_output *output_base,
 451                        pixman_region32_t *damage)
 452 {
 453         struct x11_output *output = (struct x11_output *)output_base;
 454         struct weston_compositor *ec = output->base.compositor;
 455         struct x11_compositor *c = (struct x11_compositor *)ec;
 456         xcb_void_cookie_t cookie;
 457         xcb_generic_error_t *err;
 458
 459         pixman_renderer_output_set_buffer(output_base, output->hw_surface);
 460         ec->renderer->repaint_output(output_base, damage);
 461
 462         pixman_region32_subtract(&ec->primary_plane.damage,
 463                                  &ec->primary_plane.damage, damage);
 464         set_clip_for_output(output_base, damage);
 465         cookie = xcb_shm_put_image_checked(c->conn, output->window, output->gc,
 466                                         pixman_image_get_width(output->hw_surface),
 467                                         pixman_image_get_height(output->hw_surface),
 468                                         0, 0,
 469                                         pixman_image_get_width(output->hw_surface),
 470                                         pixman_image_get_height(output->hw_surface),
 471                                         0, 0, output->depth, XCB_IMAGE_FORMAT_Z_PIXMAP,
 472                                         0, output->segment, 0);
 473         err = xcb_request_check(c->conn, cookie);
 474         if (err != NULL) {
 475                 weston_log("Failed to put shm image, err: %d\n", err->error_code);
 476                 free(err);
 477         }
 478
 479         wl_event_source_timer_update(output->finish_frame_timer, 10);
 480 }
 481
 482 static int
 483 finish_frame_handler(void *data)
 484 {
 485         struct x11_output *output = data;
 486
 487         x11_output_start_repaint_loop(&output->base);
 488
 489         return 1;
 490 }
 491
 492 static void
 493 x11_output_deinit_shm(struct x11_compositor *c, struct x11_output *output)
 494 {
 495         xcb_void_cookie_t cookie;
 496         xcb_generic_error_t *err;
 497         xcb_free_gc(c->conn, output->gc);
 498
 499         pixman_image_unref(output->hw_surface);
 500         output->hw_surface = NULL;
 501         cookie = xcb_shm_detach_checked(c->conn, output->segment);
 502         err = xcb_request_check(c->conn, cookie);
 503         if (err) {
 504                 weston_log("xcb_shm_detach failed, error %d\n", err->error_code);
 505                 free(err);
 506         }
 507         shmdt(output->buf);
 508 }
 509
 510 static void
 511 x11_output_destroy(struct weston_output *output_base)
 512 {
 513         struct x11_output *output = (struct x11_output *)output_base;
 514         struct x11_compositor *compositor =
 515                 (struct x11_compositor *)output->base.compositor;
 516
 517         wl_list_remove(&output->base.link);
 518         wl_event_source_remove(output->finish_frame_timer);
 519
 520         if (compositor->use_pixman) {
 521                 pixman_renderer_output_destroy(output_base);
 522                 x11_output_deinit_shm(compositor, output);
 523         } else
 524                 gl_renderer_output_destroy(output_base);
 525
 526         xcb_destroy_window(compositor->conn, output->window);
 527
 528         weston_output_destroy(&output->base);
 529
 530         free(output);
 531 }
 532
 533 static void
 534 x11_output_set_wm_protocols(struct x11_compositor *c,
 535                             struct x11_output *output)
 536 {
 537         xcb_atom_t list[1];
 538
 539         list[0] = c->atom.wm_delete_window;
 540         xcb_change_property (c->conn,
 541                              XCB_PROP_MODE_REPLACE,
 542                              output->window,
 543                              c->atom.wm_protocols,
 544                              XCB_ATOM_ATOM,
 545                              32,
 546                              ARRAY_LENGTH(list),
 547                              list);
 548 }
 549
 550 struct wm_normal_hints {
 551         uint32_t flags;
 552         uint32_t pad[4];
 553         int32_t min_width, min_height;
 554         int32_t max_width, max_height;
 555         int32_t width_inc, height_inc;
 556         int32_t min_aspect_x, min_aspect_y;
 557         int32_t max_aspect_x, max_aspect_y;
 558         int32_t base_width, base_height;
 559         int32_t win_gravity;
 560 };
 561
 562 #define WM_NORMAL_HINTS_MIN_SIZE        16
 563 #define WM_NORMAL_HINTS_MAX_SIZE        32
 564
 565 static void
 566 x11_output_set_icon(struct x11_compositor *c,
 567                     struct x11_output *output, const char *filename)
 568 {
 569         uint32_t *icon;
 570         int32_t width, height;
 571         pixman_image_t *image;
 572
 573         image = load_image(filename);
 574         if (!image)
 575                 return;
 576         width = pixman_image_get_width(image);
 577         height = pixman_image_get_height(image);
 578         icon = malloc(width * height * 4 + 8);
 579         if (!icon) {
 580                 pixman_image_unref(image);
 581                 return;
 582         }
 583
 584         icon[0] = width;
 585         icon[1] = height;
 586         memcpy(icon + 2, pixman_image_get_data(image), width * height * 4);
 587         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 588                             c->atom.net_wm_icon, c->atom.cardinal, 32,
 589                             width * height + 2, icon);
 590         free(icon);
 591         pixman_image_unref(image);
 592 }
 593
 594 static void
 595 x11_output_wait_for_map(struct x11_compositor *c, struct x11_output *output)
 596 {
 597         xcb_map_notify_event_t *map_notify;
 598         xcb_configure_notify_event_t *configure_notify;
 599         xcb_generic_event_t *event;
 600         int mapped = 0, configured = 0;
 601         uint8_t response_type;
 602
 603         /* This isn't the nicest way to do this.  Ideally, we could
 604          * just go back to the main loop and once we get the configure
 605          * notify, we add the output to the compositor.  While we do
 606          * support output hotplug, we can't start up with no outputs.
 607          * We could add the output and then resize once we get the
 608          * configure notify, but we don't want to start up and
 609          * immediately resize the output.
 610          *
 611          * Also, some window managers don't give us our final
 612          * fullscreen size before map_notify, so if we don't get a
 613          * configure_notify before map_notify, we just wait for the
 614          * first one and hope that's our size. */
 615
 616         xcb_flush(c->conn);
 617
 618         while (!mapped || !configured) {
 619                 event = xcb_wait_for_event(c->conn);
 620                 response_type = event->response_type & ~0x80;
 621
 622                 switch (response_type) {
 623                 case XCB_MAP_NOTIFY:
 624                         map_notify = (xcb_map_notify_event_t *) event;
 625                         if (map_notify->window == output->window)
 626                                 mapped = 1;
 627                         break;
 628
 629                 case XCB_CONFIGURE_NOTIFY:
 630                         configure_notify =
 631                                 (xcb_configure_notify_event_t *) event;
 632
 633
 634                         if (configure_notify->width % output->scale != 0 ||
 635                             configure_notify->height % output->scale != 0)
 636                                 weston_log("Resolution is not a multiple of screen size, rounding\n");
 637                         output->mode.width = configure_notify->width / output->scale;
 638                         output->mode.height = configure_notify->height / output->scale;
 639                         configured = 1;
 640                         break;
 641                 }
 642         }
 643 }
 644
 645 static xcb_visualtype_t *
 646 find_visual_by_id(xcb_screen_t *screen,
 647                    xcb_visualid_t id)
 648 {
 649         xcb_depth_iterator_t i;
 650         xcb_visualtype_iterator_t j;
 651         for (i = xcb_screen_allowed_depths_iterator(screen);
 652              i.rem;
 653              xcb_depth_next(&i)) {
 654                 for (j = xcb_depth_visuals_iterator(i.data);
 655                      j.rem;
 656                      xcb_visualtype_next(&j)) {
 657                         if (j.data->visual_id == id)
 658                                 return j.data;
 659                 }
 660         }
 661         return 0;
 662 }
 663
 664 static uint8_t
 665 get_depth_of_visual(xcb_screen_t *screen,
 666                    xcb_visualid_t id)
 667 {
 668         xcb_depth_iterator_t i;
 669         xcb_visualtype_iterator_t j;
 670         for (i = xcb_screen_allowed_depths_iterator(screen);
 671              i.rem;
 672              xcb_depth_next(&i)) {
 673                 for (j = xcb_depth_visuals_iterator(i.data);
 674                      j.rem;
 675                      xcb_visualtype_next(&j)) {
 676                         if (j.data->visual_id == id)
 677                                 return i.data->depth;
 678                 }
 679         }
 680         return 0;
 681 }
 682
 683 static int
 684 x11_output_init_shm(struct x11_compositor *c, struct x11_output *output,
 685         int width, int height)
 686 {
 687         xcb_screen_iterator_t iter;
 688         xcb_visualtype_t *visual_type;
 689         xcb_format_iterator_t fmt;
 690         xcb_void_cookie_t cookie;
 691         xcb_generic_error_t *err;
 692         const xcb_query_extension_reply_t *ext;
 693         int bitsperpixel = 0;
 694         pixman_format_code_t pixman_format;
 695
 696         /* Check if SHM is available */
 697         ext = xcb_get_extension_data(c->conn, &xcb_shm_id);
 698         if (ext == NULL || !ext->present) {
 699                 /* SHM is missing */
 700                 weston_log("SHM extension is not available\n");
 701                 errno = ENOENT;
 702                 return -1;
 703         }
 704
 705         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 706         visual_type = find_visual_by_id(iter.data, iter.data->root_visual);
 707         if (!visual_type) {
 708                 weston_log("Failed to lookup visual for root window\n");
 709                 errno = ENOENT;
 710                 return -1;
 711         }
 712         weston_log("Found visual, bits per value: %d, red_mask: %.8x, green_mask: %.8x, blue_mask: %.8x\n",
 713                 visual_type->bits_per_rgb_value,
 714                 visual_type->red_mask,
 715                 visual_type->green_mask,
 716                 visual_type->blue_mask);
 717         output->depth = get_depth_of_visual(iter.data, iter.data->root_visual);
 718         weston_log("Visual depth is %d\n", output->depth);
 719
 720         for (fmt = xcb_setup_pixmap_formats_iterator(xcb_get_setup(c->conn));
 721              fmt.rem;
 722              xcb_format_next(&fmt)) {
 723                 if (fmt.data->depth == output->depth) {
 724                         bitsperpixel = fmt.data->bits_per_pixel;
 725                         break;
 726                 }
 727         }
 728         weston_log("Found format for depth %d, bpp: %d\n",
 729                 output->depth, bitsperpixel);
 730
 731         if  (bitsperpixel == 32 &&
 732              visual_type->red_mask == 0xff0000 &&
 733              visual_type->green_mask == 0x00ff00 &&
 734              visual_type->blue_mask == 0x0000ff) {
 735                 weston_log("Will use x8r8g8b8 format for SHM surfaces\n");
 736                 pixman_format = PIXMAN_x8r8g8b8;
 737         } else {
 738                 weston_log("Can't find appropriate format for SHM pixmap\n");
 739                 errno = ENOTSUP;
 740                 return -1;
 741         }
 742
 743
 744         /* Create SHM segment and attach it */
 745         output->shm_id = shmget(IPC_PRIVATE, width * height * (bitsperpixel / 8), IPC_CREAT | S_IRWXU);
 746         if (output->shm_id == -1) {
 747                 weston_log("x11shm: failed to allocate SHM segment\n");
 748                 return -1;
 749         }
 750         output->buf = shmat(output->shm_id, NULL, 0 /* read/write */);
 751         if (-1 == (long)output->buf) {
 752                 weston_log("x11shm: failed to attach SHM segment\n");
 753                 return -1;
 754         }
 755         output->segment = xcb_generate_id(c->conn);
 756         cookie = xcb_shm_attach_checked(c->conn, output->segment, output->shm_id, 1);
 757         err = xcb_request_check(c->conn, cookie);
 758         if (err) {
 759                 weston_log("x11shm: xcb_shm_attach error %d\n", err->error_code);
 760                 free(err);
 761                 return -1;
 762         }
 763
 764         shmctl(output->shm_id, IPC_RMID, NULL);
 765
 766         /* Now create pixman image */
 767         output->hw_surface = pixman_image_create_bits(pixman_format, width, height, output->buf,
 768                 width * (bitsperpixel / 8));
 769
 770         output->gc = xcb_generate_id(c->conn);
 771         xcb_create_gc(c->conn, output->gc, output->window, 0, NULL);
 772
 773         return 0;
 774 }
 775
 776 static struct x11_output *
 777 x11_compositor_create_output(struct x11_compositor *c, int x, int y,
 778                              int width, int height, int fullscreen,
 779                              int no_input, char *configured_name,
 780                              uint32_t transform, uint32_t scale)
 781 {
 782         static const char name[] = "Weston Compositor";
 783         static const char class[] = "weston-1\0Weston Compositor";
 784         char title[32];
 785         struct x11_output *output;
 786         xcb_screen_iterator_t iter;
 787         struct wm_normal_hints normal_hints;
 788         struct wl_event_loop *loop;
 789         int output_width, output_height;
 790         uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
 791         xcb_atom_t atom_list[1];
 792         uint32_t values[2] = {
 793                 XCB_EVENT_MASK_EXPOSURE |
 794                 XCB_EVENT_MASK_STRUCTURE_NOTIFY,
 795                 0
 796         };
 797
 798         output_width = width * scale;
 799         output_height = height * scale;
 800
 801         if (configured_name)
 802                 sprintf(title, "%s - %s", name, configured_name);
 803         else
 804                 strcpy(title, name);
 805
 806         if (!no_input)
 807                 values[0] |=
 808                         XCB_EVENT_MASK_KEY_PRESS |
 809                         XCB_EVENT_MASK_KEY_RELEASE |
 810                         XCB_EVENT_MASK_BUTTON_PRESS |
 811                         XCB_EVENT_MASK_BUTTON_RELEASE |
 812                         XCB_EVENT_MASK_POINTER_MOTION |
 813                         XCB_EVENT_MASK_ENTER_WINDOW |
 814                         XCB_EVENT_MASK_LEAVE_WINDOW |
 815                         XCB_EVENT_MASK_KEYMAP_STATE |
 816                         XCB_EVENT_MASK_FOCUS_CHANGE;
 817
 818         output = malloc(sizeof *output);
 819         if (output == NULL)
 820                 return NULL;
 821
 822         memset(output, 0, sizeof *output);
 823
 824         output->mode.flags =
 825                 WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
 826         if (output->scale != 1)
 827                 output->mode.flags |= WL_OUTPUT_MODE_SCALED;
 828
 829         output->mode.width = width;
 830         output->mode.height = height;
 831         output->mode.refresh = 60000;
 832         output->scale = scale;
 833         wl_list_init(&output->base.mode_list);
 834         wl_list_insert(&output->base.mode_list, &output->mode.link);
 835
 836         values[1] = c->null_cursor;
 837         output->window = xcb_generate_id(c->conn);
 838         iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
 839         xcb_create_window(c->conn,
 840                           XCB_COPY_FROM_PARENT,
 841                           output->window,
 842                           iter.data->root,
 843                           0, 0,
 844                           output_width, output_height,
 845                           0,
 846                           XCB_WINDOW_CLASS_INPUT_OUTPUT,
 847                           iter.data->root_visual,
 848                           mask, values);
 849
 850         if (fullscreen) {
 851                 atom_list[0] = c->atom.net_wm_state_fullscreen;
 852                 xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE,
 853                                     output->window,
 854                                     c->atom.net_wm_state,
 855                                     XCB_ATOM_ATOM, 32,
 856                                     ARRAY_LENGTH(atom_list), atom_list);
 857         } else {
 858                 /* Don't resize me. */
 859                 memset(&normal_hints, 0, sizeof normal_hints);
 860                 normal_hints.flags =
 861                         WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
 862                 normal_hints.min_width = output_width;
 863                 normal_hints.min_height = output_height;
 864                 normal_hints.max_width = output_width;
 865                 normal_hints.max_height = output_height;
 866                 xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 867                                     c->atom.wm_normal_hints,
 868                                     c->atom.wm_size_hints, 32,
 869                                     sizeof normal_hints / 4,
 870                                     (uint8_t *) &normal_hints);
 871         }
 872
 873         /* Set window name.  Don't bother with non-EWMH WMs. */
 874         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 875                             c->atom.net_wm_name, c->atom.utf8_string, 8,
 876                             strlen(title), title);
 877         xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
 878                             c->atom.wm_class, c->atom.string, 8,
 879                             sizeof class, class);
 880
 881         x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");
 882
 883         x11_output_set_wm_protocols(c, output);
 884
 885         xcb_map_window(c->conn, output->window);
 886
 887         if (fullscreen)
 888                 x11_output_wait_for_map(c, output);
 889
 890         output->base.origin = output->base.current;
 891         output->base.start_repaint_loop = x11_output_start_repaint_loop;
 892         if (c->use_pixman)
 893                 output->base.repaint = x11_output_repaint_shm;
 894         else
 895                 output->base.repaint = x11_output_repaint_gl;
 896         output->base.destroy = x11_output_destroy;
 897         output->base.assign_planes = NULL;
 898         output->base.set_backlight = NULL;
 899         output->base.set_dpms = NULL;
 900         output->base.switch_mode = NULL;
 901         output->base.current = &output->mode;
 902         output->base.make = "xwayland";
 903         output->base.model = "none";
 904         weston_output_init(&output->base, &c->base,
 905                            x, y, width, height, transform, scale);
 906
 907         if (c->use_pixman) {
 908                 if (x11_output_init_shm(c, output, output_width, output_height) < 0)
 909                         return NULL;
 910                 if (pixman_renderer_output_create(&output->base) < 0) {
 911                         x11_output_deinit_shm(c, output);
 912                         return NULL;
 913                 }
 914         } else {
 915                 if (gl_renderer_output_create(&output->base, (EGLNativeWindowType)output->window) < 0)
 916                         return NULL;
 917         }
 918
 919         loop = wl_display_get_event_loop(c->base.wl_display);
 920         output->finish_frame_timer =
 921                 wl_event_loop_add_timer(loop, finish_frame_handler, output);
 922
 923         wl_list_insert(c->base.output_list.prev, &output->base.link);
 924
 925         weston_log("x11 output %dx%d, window id %d\n",
 926                    width, height, output->window);
 927
 928         return output;
 929 }
 930
 931 static struct x11_output *
 932 x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
 933 {
 934         struct x11_output *output;
 935
 936         wl_list_for_each(output, &c->base.output_list, base.link) {
 937                 if (output->window == window)
 938                         return output;
 939         }
 940
 941         return NULL;
 942 }
 943
 944 #ifdef HAVE_XCB_XKB
 945 static void
 946 update_xkb_state(struct x11_compositor *c, xcb_xkb_state_notify_event_t *state)
 947 {
 948         xkb_state_update_mask(c->core_seat.xkb_state.state,
 949                               get_xkb_mod_mask(c, state->baseMods),
 950                               get_xkb_mod_mask(c, state->latchedMods),
 951                               get_xkb_mod_mask(c, state->lockedMods),
 952                               0,
 953                               0,
 954                               state->group);
 955
 956         notify_modifiers(&c->core_seat,
 957                          wl_display_next_serial(c->base.wl_display));
 958 }
 959 #endif
 960
 961 /**
 962  * This is monumentally unpleasant.  If we don't have XCB-XKB bindings,
 963  * the best we can do (given that XCB also lacks XI2 support), is to take
 964  * the state from the core key events.  Unfortunately that only gives us
 965  * the effective (i.e. union of depressed/latched/locked) state, and we
 966  * need the granularity.
 967  *
 968  * So we still update the state with every key event we see, but also use
 969  * the state field from X11 events as a mask so we don't get any stuck
 970  * modifiers.
 971  */
 972 static void
 973 update_xkb_state_from_core(struct x11_compositor *c, uint16_t x11_mask)
 974 {
 975         uint32_t mask = get_xkb_mod_mask(c, x11_mask);
 976         struct weston_keyboard *keyboard = c->core_seat.keyboard;
 977
 978         xkb_state_update_mask(c->core_seat.xkb_state.state,
 979                               keyboard->modifiers.mods_depressed & mask,
 980                               keyboard->modifiers.mods_latched & mask,
 981                               keyboard->modifiers.mods_locked & mask,
 982                               0,
 983                               0,
 984                               (x11_mask >> 13) & 3);
 985         notify_modifiers(&c->core_seat,
 986                          wl_display_next_serial(c->base.wl_display));
 987 }
 988
 989 static void
 990 x11_compositor_deliver_button_event(struct x11_compositor *c,
 991                                     xcb_generic_event_t *event, int state)
 992 {
 993         xcb_button_press_event_t *button_event =
 994                 (xcb_button_press_event_t *) event;
 995         uint32_t button;
 996         struct x11_output *output;
 997
 998         output = x11_compositor_find_output(c, button_event->event);
 999
1000         if (state)
1001                 xcb_grab_pointer(c->conn, 0, output->window,
1002                                  XCB_EVENT_MASK_BUTTON_PRESS |
1003                                  XCB_EVENT_MASK_BUTTON_RELEASE |
1004                                  XCB_EVENT_MASK_POINTER_MOTION |
1005                                  XCB_EVENT_MASK_ENTER_WINDOW |
1006                                  XCB_EVENT_MASK_LEAVE_WINDOW,
1007                                  XCB_GRAB_MODE_ASYNC,
1008                                  XCB_GRAB_MODE_ASYNC,
1009                                  output->window, XCB_CURSOR_NONE,
1010                                  button_event->time);
1011         else
1012                 xcb_ungrab_pointer(c->conn, button_event->time);
1013
1014         if (!c->has_xkb)
1015                 update_xkb_state_from_core(c, button_event->state);
1016
1017         switch (button_event->detail) {
1018         default:
1019                 button = button_event->detail + BTN_LEFT - 1;
1020                 break;
1021         case 2:
1022                 button = BTN_MIDDLE;
1023                 break;
1024         case 3:
1025                 button = BTN_RIGHT;
1026                 break;
1027         case 4:
1028                 /* Axis are measured in pixels, but the xcb events are discrete
1029                  * steps. Therefore move the axis by some pixels every step. */
1030                 if (state)
1031                         notify_axis(&c->core_seat,
1032                                     weston_compositor_get_time(),
1033                                     WL_POINTER_AXIS_VERTICAL_SCROLL,
1034                                     -DEFAULT_AXIS_STEP_DISTANCE);
1035                 return;
1036         case 5:
1037                 if (state)
1038                         notify_axis(&c->core_seat,
1039                                     weston_compositor_get_time(),
1040                                     WL_POINTER_AXIS_VERTICAL_SCROLL,
1041                                     DEFAULT_AXIS_STEP_DISTANCE);
1042                 return;
1043         case 6:
1044                 if (state)
1045                         notify_axis(&c->core_seat,
1046                                     weston_compositor_get_time(),
1047                                     WL_POINTER_AXIS_HORIZONTAL_SCROLL,
1048                                     -DEFAULT_AXIS_STEP_DISTANCE);
1049                 return;
1050         case 7:
1051                 if (state)
1052                         notify_axis(&c->core_seat,
1053                                     weston_compositor_get_time(),
1054                                     WL_POINTER_AXIS_HORIZONTAL_SCROLL,
1055                                     DEFAULT_AXIS_STEP_DISTANCE);
1056                 return;
1057         }
1058
1059         notify_button(&c->core_seat,
1060                       weston_compositor_get_time(), button,
1061                       state ? WL_POINTER_BUTTON_STATE_PRESSED :
1062                               WL_POINTER_BUTTON_STATE_RELEASED);
1063 }
1064
1065 static void
1066 x11_output_transform_coordinate(struct x11_output *x11_output,
1067                                                 wl_fixed_t *x, wl_fixed_t *y)
1068 {
1069         struct weston_output *output = &x11_output->base;
1070         wl_fixed_t tx, ty;
1071         wl_fixed_t width = wl_fixed_from_int(output->width * output->scale - 1);
1072         wl_fixed_t height = wl_fixed_from_int(output->height * output->scale - 1);
1073
1074         switch(output->transform) {
1075         case WL_OUTPUT_TRANSFORM_NORMAL:
1076         default:
1077                 tx = *x;
1078                 ty = *y;
1079                 break;
1080         case WL_OUTPUT_TRANSFORM_90:
1081                 tx = *y;
1082                 ty = height - *x;
1083                 break;
1084         case WL_OUTPUT_TRANSFORM_180:
1085                 tx = width - *x;
1086                 ty = height - *y;
1087                 break;
1088         case WL_OUTPUT_TRANSFORM_270:
1089                 tx = width - *y;
1090                 ty = *x;
1091                 break;
1092         case WL_OUTPUT_TRANSFORM_FLIPPED:
1093                 tx = width - *x;
1094                 ty = *y;
1095                 break;
1096         case WL_OUTPUT_TRANSFORM_FLIPPED_90:
1097                 tx = width - *y;
1098                 ty = height - *x;
1099                 break;
1100         case WL_OUTPUT_TRANSFORM_FLIPPED_180:
1101                 tx = *x;
1102                 ty = height - *y;
1103                 break;
1104         case WL_OUTPUT_TRANSFORM_FLIPPED_270:
1105                 tx = *y;
1106                 ty = *x;
1107                 break;
1108         }
1109
1110         tx /= output->scale;
1111         ty /= output->scale;
1112
1113         tx += wl_fixed_from_int(output->x);
1114         ty += wl_fixed_from_int(output->y);
1115
1116         *x = tx;
1117         *y = ty;
1118 }
1119
1120 static void
1121 x11_compositor_deliver_motion_event(struct x11_compositor *c,
1122                                         xcb_generic_event_t *event)
1123 {
1124         struct x11_output *output;
1125         wl_fixed_t x, y;
1126         xcb_motion_notify_event_t *motion_notify =
1127                         (xcb_motion_notify_event_t *) event;
1128
1129         if (!c->has_xkb)
1130                 update_xkb_state_from_core(c, motion_notify->state);
1131         output = x11_compositor_find_output(c, motion_notify->event);
1132         x = wl_fixed_from_int(motion_notify->event_x);
1133         y = wl_fixed_from_int(motion_notify->event_y);
1134         x11_output_transform_coordinate(output, &x, &y);
1135
1136         notify_motion(&c->core_seat, weston_compositor_get_time(),
1137                       x - c->prev_x, y - c->prev_y);
1138
1139         c->prev_x = x;
1140         c->prev_y = y;
1141 }
1142
1143 static void
1144 x11_compositor_deliver_enter_event(struct x11_compositor *c,
1145                                         xcb_generic_event_t *event)
1146 {
1147         struct x11_output *output;
1148         wl_fixed_t x, y;
1149
1150         xcb_enter_notify_event_t *enter_notify =
1151                         (xcb_enter_notify_event_t *) event;
1152         if (enter_notify->state >= Button1Mask)
1153                 return;
1154         if (!c->has_xkb)
1155                 update_xkb_state_from_core(c, enter_notify->state);
1156         output = x11_compositor_find_output(c, enter_notify->event);
1157         x = wl_fixed_from_int(enter_notify->event_x);
1158         y = wl_fixed_from_int(enter_notify->event_y);
1159         x11_output_transform_coordinate(output, &x, &y);
1160
1161         notify_pointer_focus(&c->core_seat, &output->base, x, y);
1162
1163         c->prev_x = x;
1164         c->prev_y = y;
1165 }
1166
1167 static int
1168 x11_compositor_next_event(struct x11_compositor *c,
1169                           xcb_generic_event_t **event, uint32_t mask)
1170 {
1171         if (mask & WL_EVENT_READABLE) {
1172                 *event = xcb_poll_for_event(c->conn);
1173         } else {
1174 #ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
1175                 *event = xcb_poll_for_queued_event(c->conn);
1176 #else
1177                 *event = xcb_poll_for_event(c->conn);
1178 #endif
1179         }
1180
1181         return *event != NULL;
1182 }
1183
1184 static int
1185 x11_compositor_handle_event(int fd, uint32_t mask, void *data)
1186 {
1187         struct x11_compositor *c = data;
1188         struct x11_output *output;
1189         xcb_generic_event_t *event, *prev;
1190         xcb_client_message_event_t *client_message;
1191         xcb_enter_notify_event_t *enter_notify;
1192         xcb_key_press_event_t *key_press, *key_release;
1193         xcb_keymap_notify_event_t *keymap_notify;
1194         xcb_focus_in_event_t *focus_in;
1195         xcb_expose_event_t *expose;
1196         xcb_atom_t atom;
1197         uint32_t *k;
1198         uint32_t i, set;
1199         uint8_t response_type;
1200         int count;
1201
1202         prev = NULL;
1203         count = 0;
1204         while (x11_compositor_next_event(c, &event, mask)) {
1205                 response_type = event->response_type & ~0x80;
1206
1207                 switch (prev ? prev->response_type & ~0x80 : 0x80) {
1208                 case XCB_KEY_RELEASE:
1209                         /* Suppress key repeat events; this is only used if we
1210                          * don't have XCB XKB support. */
1211                         key_release = (xcb_key_press_event_t *) prev;
1212                         key_press = (xcb_key_press_event_t *) event;
1213                         if (response_type == XCB_KEY_PRESS &&
1214                             key_release->time == key_press->time &&
1215                             key_release->detail == key_press->detail) {
1216                                 /* Don't deliver the held key release
1217                                  * event or the new key press event. */
1218                                 free(event);
1219                                 free(prev);
1220                                 prev = NULL;
1221                                 continue;
1222                         } else {
1223                                 /* Deliver the held key release now
1224                                  * and fall through and handle the new
1225                                  * event below. */
1226                                 update_xkb_state_from_core(c, key_release->state);
1227                                 notify_key(&c->core_seat,
1228                                            weston_compositor_get_time(),
1229                                            key_release->detail - 8,
1230                                            WL_KEYBOARD_KEY_STATE_RELEASED,
1231                                            STATE_UPDATE_AUTOMATIC);
1232                                 free(prev);
1233                                 prev = NULL;
1234                                 break;
1235                         }
1236
1237                 case XCB_FOCUS_IN:
1238                         assert(response_type == XCB_KEYMAP_NOTIFY);
1239                         keymap_notify = (xcb_keymap_notify_event_t *) event;
1240                         c->keys.size = 0;
1241                         for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
1242                                 set = keymap_notify->keys[i >> 3] &
1243                                         (1 << (i & 7));
1244                                 if (set) {
1245                                         k = wl_array_add(&c->keys, sizeof *k);
1246                                         *k = i;
1247                                 }
1248                         }
1249
1250                         /* Unfortunately the state only comes with the enter
1251                          * event, rather than with the focus event.  I'm not
1252                          * sure of the exact semantics around it and whether
1253                          * we can ensure that we get both? */
1254                         notify_keyboard_focus_in(&c->core_seat, &c->keys,
1255                                                  STATE_UPDATE_AUTOMATIC);
1256
1257                         free(prev);
1258                         prev = NULL;
1259                         break;
1260
1261                 default:
1262                         /* No previous event held */
1263                         break;
1264                 }
1265
1266                 switch (response_type) {
1267                 case XCB_KEY_PRESS:
1268                         key_press = (xcb_key_press_event_t *) event;
1269                         if (!c->has_xkb)
1270                                 update_xkb_state_from_core(c, key_press->state);
1271                         notify_key(&c->core_seat,
1272                                    weston_compositor_get_time(),
1273                                    key_press->detail - 8,
1274                                    WL_KEYBOARD_KEY_STATE_PRESSED,
1275                                    c->has_xkb ? STATE_UPDATE_NONE :
1276                                                 STATE_UPDATE_AUTOMATIC);
1277                         break;
1278                 case XCB_KEY_RELEASE:
1279                         /* If we don't have XKB, we need to use the lame
1280                          * autorepeat detection above. */
1281                         if (!c->has_xkb) {
1282                                 prev = event;
1283                                 break;
1284                         }
1285                         key_release = (xcb_key_press_event_t *) event;
1286                         notify_key(&c->core_seat,
1287                                    weston_compositor_get_time(),
1288                                    key_release->detail - 8,
1289                                    WL_KEYBOARD_KEY_STATE_RELEASED,
1290                                    STATE_UPDATE_NONE);
1291                         break;
1292                 case XCB_BUTTON_PRESS:
1293                         x11_compositor_deliver_button_event(c, event, 1);
1294                         break;
1295                 case XCB_BUTTON_RELEASE:
1296                         x11_compositor_deliver_button_event(c, event, 0);
1297                         break;
1298                 case XCB_MOTION_NOTIFY:
1299                         x11_compositor_deliver_motion_event(c, event);
1300                         break;
1301
1302                 case XCB_EXPOSE:
1303                         expose = (xcb_expose_event_t *) event;
1304                         output = x11_compositor_find_output(c, expose->window);
1305                         weston_output_schedule_repaint(&output->base);
1306                         break;
1307
1308                 case XCB_ENTER_NOTIFY:
1309                         x11_compositor_deliver_enter_event(c, event);
1310                         break;
1311
1312                 case XCB_LEAVE_NOTIFY:
1313                         enter_notify = (xcb_enter_notify_event_t *) event;
1314                         if (enter_notify->state >= Button1Mask)
1315                                 break;
1316                         if (!c->has_xkb)
1317                                 update_xkb_state_from_core(c, enter_notify->state);
1318                         notify_pointer_focus(&c->core_seat, NULL, 0, 0);
1319                         break;
1320
1321                 case XCB_CLIENT_MESSAGE:
1322                         client_message = (xcb_client_message_event_t *) event;
1323                         atom = client_message->data.data32[0];
1324                         if (atom == c->atom.wm_delete_window)
1325                                 wl_display_terminate(c->base.wl_display);
1326                         break;
1327
1328                 case XCB_FOCUS_IN:
1329                         focus_in = (xcb_focus_in_event_t *) event;
1330                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
1331                                 break;
1332
1333                         prev = event;
1334                         break;
1335
1336                 case XCB_FOCUS_OUT:
1337                         focus_in = (xcb_focus_in_event_t *) event;
1338                         if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
1339                             focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
1340                                 break;
1341                         notify_keyboard_focus_out(&c->core_seat);
1342                         break;
1343
1344                 default:
1345                         break;
1346                 }
1347
1348 #ifdef HAVE_XCB_XKB
1349                 if (c->has_xkb &&
1350                     response_type == c->xkb_event_base) {
1351                         xcb_xkb_state_notify_event_t *state =
1352                                 (xcb_xkb_state_notify_event_t *) event;
1353                         if (state->xkbType == XCB_XKB_STATE_NOTIFY)
1354                                 update_xkb_state(c, state);
1355                 }
1356 #endif
1357
1358                 count++;
1359                 if (prev != event)
1360                         free (event);
1361         }
1362
1363         switch (prev ? prev->response_type & ~0x80 : 0x80) {
1364         case XCB_KEY_RELEASE:
1365                 key_release = (xcb_key_press_event_t *) prev;
1366                 update_xkb_state_from_core(c, key_release->state);
1367                 notify_key(&c->core_seat,
1368                            weston_compositor_get_time(),
1369                            key_release->detail - 8,
1370                            WL_KEYBOARD_KEY_STATE_RELEASED,
1371                            STATE_UPDATE_AUTOMATIC);
1372                 free(prev);
1373                 prev = NULL;
1374                 break;
1375         default:
1376                 break;
1377         }
1378
1379         return count;
1380 }
1381
1382 #define F(field) offsetof(struct x11_compositor, field)
1383
1384 static void
1385 x11_compositor_get_resources(struct x11_compositor *c)
1386 {
1387         static const struct { const char *name; int offset; } atoms[] = {
1388                 { "WM_PROTOCOLS",       F(atom.wm_protocols) },
1389                 { "WM_NORMAL_HINTS",    F(atom.wm_normal_hints) },
1390                 { "WM_SIZE_HINTS",      F(atom.wm_size_hints) },
1391                 { "WM_DELETE_WINDOW",   F(atom.wm_delete_window) },
1392                 { "WM_CLASS",           F(atom.wm_class) },
1393                 { "_NET_WM_NAME",       F(atom.net_wm_name) },
1394                 { "_NET_WM_ICON",       F(atom.net_wm_icon) },
1395                 { "_NET_WM_STATE",      F(atom.net_wm_state) },
1396                 { "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
1397                 { "_NET_SUPPORTING_WM_CHECK",
1398                                         F(atom.net_supporting_wm_check) },
1399                 { "_NET_SUPPORTED",     F(atom.net_supported) },
1400                 { "STRING",             F(atom.string) },
1401                 { "UTF8_STRING",        F(atom.utf8_string) },
1402                 { "CARDINAL",           F(atom.cardinal) },
1403                 { "_XKB_RULES_NAMES",   F(atom.xkb_names) },
1404         };
1405
1406         xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
1407         xcb_intern_atom_reply_t *reply;
1408         xcb_pixmap_t pixmap;
1409         xcb_gc_t gc;
1410         unsigned int i;
1411         uint8_t data[] = { 0, 0, 0, 0 };
1412
1413         for (i = 0; i < ARRAY_LENGTH(atoms); i++)
1414                 cookies[i] = xcb_intern_atom (c->conn, 0,
1415                                               strlen(atoms[i].name),
1416                                               atoms[i].name);
1417
1418         for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
1419                 reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
1420                 *(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
1421                 free(reply);
1422         }
1423
1424         pixmap = xcb_generate_id(c->conn);
1425         gc = xcb_generate_id(c->conn);
1426         xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
1427         xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
1428         xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
1429                       pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
1430         c->null_cursor = xcb_generate_id(c->conn);
1431         xcb_create_cursor (c->conn, c->null_cursor,
1432                            pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
1433         xcb_free_gc(c->conn, gc);
1434         xcb_free_pixmap(c->conn, pixmap);
1435 }
1436
1437 static void
1438 x11_compositor_get_wm_info(struct x11_compositor *c)
1439 {
1440         xcb_get_property_cookie_t cookie;
1441         xcb_get_property_reply_t *reply;
1442         xcb_atom_t *atom;
1443         unsigned int i;
1444
1445         cookie = xcb_get_property(c->conn, 0, c->screen->root,
1446                                   c->atom.net_supported,
1447                                   XCB_ATOM_ATOM, 0, 1024);
1448         reply = xcb_get_property_reply(c->conn, cookie, NULL);
1449         if (reply == NULL)
1450                 return;
1451
1452         atom = (xcb_atom_t *) xcb_get_property_value(reply);
1453
1454         for (i = 0; i < reply->value_len; i++) {
1455                 if (atom[i] == c->atom.net_wm_state_fullscreen)
1456                         c->has_net_wm_state_fullscreen = 1;
1457         }
1458 }
1459
1460 static void
1461 x11_restore(struct weston_compositor *ec)
1462 {
1463 }
1464
1465 static void
1466 x11_destroy(struct weston_compositor *ec)
1467 {
1468         struct x11_compositor *compositor = (struct x11_compositor *)ec;
1469
1470         wl_event_source_remove(compositor->xcb_source);
1471         x11_input_destroy(compositor);
1472
1473         weston_compositor_shutdown(ec); /* destroys outputs, too */
1474
1475         ec->renderer->destroy(ec);
1476
1477         XCloseDisplay(compositor->dpy);
1478         free(ec);
1479 }
1480
1481 static uint32_t
1482 parse_transform(const char *transform, const char *output_name)
1483 {
1484         static const struct { const char *name; uint32_t token; } names[] = {
1485                 { "normal",     WL_OUTPUT_TRANSFORM_NORMAL },
1486                 { "90",         WL_OUTPUT_TRANSFORM_90 },
1487                 { "180",        WL_OUTPUT_TRANSFORM_180 },
1488                 { "270",        WL_OUTPUT_TRANSFORM_270 },
1489                 { "flipped",    WL_OUTPUT_TRANSFORM_FLIPPED },
1490                 { "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
1491                 { "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
1492                 { "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
1493         };
1494         unsigned int i;
1495
1496         for (i = 0; i < ARRAY_LENGTH(names); i++)
1497                 if (strcmp(names[i].name, transform) == 0)
1498                         return names[i].token;
1499
1500         weston_log("Invalid transform \"%s\" for output %s\n",
1501                    transform, output_name);
1502
1503         return WL_OUTPUT_TRANSFORM_NORMAL;
1504 }
1505
1506 static struct weston_compositor *
1507 x11_compositor_create(struct wl_display *display,
1508                       int fullscreen,
1509                       int no_input,
1510                       int use_pixman,
1511                       int *argc, char *argv[],
1512                       struct weston_config *config)
1513 {
1514         struct x11_compositor *c;
1515         struct x11_output *output;
1516         struct weston_config_section *section;
1517         xcb_screen_iterator_t s;
1518         int i, x = 0, output_count = 0;
1519         int width, height, count, scale;
1520         const char *section_name;
1521         char *name, *t, *mode;
1522         uint32_t transform;
1523
1524         weston_log("initializing x11 backend\n");
1525
1526         c = malloc(sizeof *c);
1527         if (c == NULL)
1528                 return NULL;
1529
1530         memset(c, 0, sizeof *c);
1531
1532         if (weston_compositor_init(&c->base, display, argc, argv, config) < 0)
1533                 goto err_free;
1534
1535         c->dpy = XOpenDisplay(NULL);
1536         if (c->dpy == NULL)
1537                 goto err_free;
1538
1539         c->conn = XGetXCBConnection(c->dpy);
1540         XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);
1541
1542         if (xcb_connection_has_error(c->conn))
1543                 goto err_xdisplay;
1544
1545         s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
1546         c->screen = s.data;
1547         wl_array_init(&c->keys);
1548
1549         x11_compositor_get_resources(c);
1550         x11_compositor_get_wm_info(c);
1551
1552         if (!c->has_net_wm_state_fullscreen && fullscreen) {
1553                 weston_log("Can not fullscreen without window manager support"
1554                            "(need _NET_WM_STATE_FULLSCREEN)\n");
1555                 fullscreen = 0;
1556         }
1557
1558         c->base.wl_display = display;
1559         c->use_pixman = use_pixman;
1560         if (c->use_pixman) {
1561                 if (pixman_renderer_init(&c->base) < 0)
1562                         goto err_xdisplay;
1563         }
1564         else {
1565                 if (gl_renderer_create(&c->base, (EGLNativeDisplayType)c->dpy, gl_renderer_opaque_attribs,
1566                                 NULL) < 0)
1567                         goto err_xdisplay;
1568         }
1569         weston_log("Using %s renderer\n", use_pixman ? "pixman" : "gl");
1570
1571         c->base.destroy = x11_destroy;
1572         c->base.restore = x11_restore;
1573
1574         if (x11_input_create(c, no_input) < 0)
1575                 goto err_renderer;
1576
1577         width = option_width ? option_width : 1024;
1578         height = option_height ? option_height : 640;
1579         count = option_count ? option_count : 1;
1580
1581         section = NULL;
1582         while (weston_config_next_section(c->base.config,
1583                                           &section, &section_name)) {
1584                 if (strcmp(section_name, "output") != 0)
1585                         continue;
1586                 weston_config_section_get_string(section, "name", &name, NULL);
1587                 if (name == NULL || name[0] != 'X')
1588                         continue;
1589
1590                 weston_config_section_get_string(section,
1591                                                  "mode", &mode, "1024x600");
1592                 if (sscanf(mode, "%dx%d", &width, &height) != 2) {
1593                         weston_log("Invalid mode \"%s\" for output %s\n",
1594                                    mode, name);
1595                         width = 1024;
1596                         height = 600;
1597                 }
1598                 free(mode);
1599
1600                 if (option_width)
1601                         width = option_width;
1602                 if (option_height)
1603                         height = option_height;
1604
1605                 weston_config_section_get_int(section, "scale", &scale, 1);
1606                 weston_config_section_get_string(section,
1607                                                  "transform", &t, "normal");
1608                 transform = parse_transform(t, name);
1609                 free(t);
1610
1611                 output = x11_compositor_create_output(c, x, 0,
1612                                                       width, height,
1613                                                       fullscreen, no_input,
1614                                                       name, transform, scale);
1615                 free(name);
1616                 if (output == NULL)
1617                         goto err_x11_input;
1618
1619                 x = pixman_region32_extents(&output->base.region)->x2;
1620
1621                 output_count++;
1622                 if (option_count && output_count >= option_count)
1623                         break;
1624         }
1625
1626         for (i = output_count; i < count; i++) {
1627                 output = x11_compositor_create_output(c, x, 0, width, height,
1628                                                       fullscreen, no_input, NULL,
1629                                                       WL_OUTPUT_TRANSFORM_NORMAL, 1);
1630                 if (output == NULL)
1631                         goto err_x11_input;
1632                 x = pixman_region32_extents(&output->base.region)->x2;
1633         }
1634
1635         c->xcb_source =
1636                 wl_event_loop_add_fd(c->base.input_loop,
1637                                      xcb_get_file_descriptor(c->conn),
1638                                      WL_EVENT_READABLE,
1639                                      x11_compositor_handle_event, c);
1640         wl_event_source_check(c->xcb_source);
1641
1642         return &c->base;
1643
1644 err_x11_input:
1645         x11_input_destroy(c);
1646 err_renderer:
1647         c->base.renderer->destroy(&c->base);
1648 err_xdisplay:
1649         XCloseDisplay(c->dpy);
1650 err_free:
1651         free(c);
1652         return NULL;
1653 }
1654
1655 WL_EXPORT struct weston_compositor *
1656 backend_init(struct wl_display *display, int *argc, char *argv[],
1657              struct weston_config *config)
1658 {
1659         int fullscreen = 0;
1660         int no_input = 0;
1661         int use_pixman = 0;
1662
1663         const struct weston_option x11_options[] = {
1664                 { WESTON_OPTION_INTEGER, "width", 0, &option_width },
1665                 { WESTON_OPTION_INTEGER, "height", 0, &option_height },
1666                 { WESTON_OPTION_BOOLEAN, "fullscreen", 'f', &fullscreen },
1667                 { WESTON_OPTION_INTEGER, "output-count", 0, &option_count },
1668                 { WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
1669                 { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
1670         };
1671
1672         parse_options(x11_options, ARRAY_LENGTH(x11_options), argc, argv);
1673
1674         return x11_compositor_create(display,
1675                                      fullscreen,
1676                                      no_input,
1677                                      use_pixman,
1678                                      argc, argv, config);
1679 }