src/shell.c

   1 /*
   2  * Copyright © 2010-2012 Intel Corporation
   3  * Copyright © 2011-2012 Collabora, Ltd.
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and
   6  * its documentation for any purpose is hereby granted without fee, provided
   7  * that the above copyright notice appear in all copies and that both that
   8  * copyright notice and this permission notice appear in supporting
   9  * documentation, and that the name of the copyright holders not be used in
  10  * advertising or publicity pertaining to distribution of the software
  11  * without specific, written prior permission.  The copyright holders make
  12  * no representations about the suitability of this software for any
  13  * purpose.  It is provided "as is" without express or implied warranty.
  14  *
  15  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  16  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  17  * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  18  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  19  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  20  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  21  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  */
  23
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26 #include <stdbool.h>
  27 #include <string.h>
  28 #include <unistd.h>
  29 #include <linux/input.h>
  30 #include <assert.h>
  31 #include <signal.h>
  32 #include <math.h>
  33 #include <sys/types.h>
  34
  35 #include <wayland-server.h>
  36 #include "compositor.h"
  37 #include "desktop-shell-server-protocol.h"
  38 #include "workspaces-server-protocol.h"
  39 #include "../shared/config-parser.h"
  40
  41 #define DEFAULT_NUM_WORKSPACES 1
  42 #define DEFAULT_WORKSPACE_CHANGE_ANIMATION_LENGTH 200
  43
  44 enum animation_type {
  45         ANIMATION_NONE,
  46
  47         ANIMATION_ZOOM,
  48         ANIMATION_FADE
  49 };
  50
  51 struct focus_state {
  52         struct weston_seat *seat;
  53         struct workspace *ws;
  54         struct weston_surface *keyboard_focus;
  55         struct wl_list link;
  56         struct wl_listener seat_destroy_listener;
  57         struct wl_listener surface_destroy_listener;
  58 };
  59
  60 struct workspace {
  61         struct weston_layer layer;
  62
  63         struct wl_list focus_list;
  64         struct wl_listener seat_destroyed_listener;
  65 };
  66
  67 struct input_panel_surface {
  68         struct wl_list link;
  69         struct weston_surface *surface;
  70         struct wl_listener listener;
  71 };
  72
  73 struct desktop_shell {
  74         struct weston_compositor *compositor;
  75
  76         struct wl_listener lock_listener;
  77         struct wl_listener unlock_listener;
  78         struct wl_listener destroy_listener;
  79         struct wl_listener show_input_panel_listener;
  80         struct wl_listener hide_input_panel_listener;
  81
  82         struct weston_layer fullscreen_layer;
  83         struct weston_layer panel_layer;
  84         struct weston_layer background_layer;
  85         struct weston_layer lock_layer;
  86         struct weston_layer input_panel_layer;
  87
  88         struct wl_listener pointer_focus_listener;
  89         struct weston_surface *grab_surface;
  90
  91         struct {
  92                 struct weston_process process;
  93                 struct wl_client *client;
  94                 struct wl_resource *desktop_shell;
  95
  96                 unsigned deathcount;
  97                 uint32_t deathstamp;
  98         } child;
  99
 100         bool locked;
 101         bool showing_input_panels;
 102         bool prepare_event_sent;
 103
 104         struct weston_surface *lock_surface;
 105         struct wl_listener lock_surface_listener;
 106
 107         struct {
 108                 struct wl_array array;
 109                 unsigned int current;
 110                 unsigned int num;
 111
 112                 struct wl_list client_list;
 113
 114                 struct weston_animation animation;
 115                 struct wl_list anim_sticky_list;
 116                 int anim_dir;
 117                 uint32_t anim_timestamp;
 118                 double anim_current;
 119                 struct workspace *anim_from;
 120                 struct workspace *anim_to;
 121         } workspaces;
 122
 123         struct {
 124                 char *path;
 125                 int duration;
 126                 struct wl_resource *binding;
 127                 struct wl_list surfaces;
 128                 struct weston_process process;
 129         } screensaver;
 130
 131         struct {
 132                 struct wl_resource *binding;
 133                 struct wl_list surfaces;
 134         } input_panel;
 135
 136         uint32_t binding_modifier;
 137         enum animation_type win_animation_type;
 138         struct weston_surface *debug_repaint_surface;
 139 };
 140
 141 enum shell_surface_type {
 142         SHELL_SURFACE_NONE,
 143         SHELL_SURFACE_TOPLEVEL,
 144         SHELL_SURFACE_TRANSIENT,
 145         SHELL_SURFACE_FULLSCREEN,
 146         SHELL_SURFACE_MAXIMIZED,
 147         SHELL_SURFACE_POPUP
 148 };
 149
 150 struct ping_timer {
 151         struct wl_event_source *source;
 152         uint32_t serial;
 153 };
 154
 155 struct shell_surface {
 156         struct wl_resource resource;
 157
 158         struct weston_surface *surface;
 159         struct wl_listener surface_destroy_listener;
 160         struct weston_surface *parent;
 161         struct desktop_shell *shell;
 162
 163         enum shell_surface_type type, next_type;
 164         char *title, *class;
 165         int32_t saved_x, saved_y;
 166         bool saved_position_valid;
 167         bool saved_rotation_valid;
 168         int unresponsive;
 169
 170         struct {
 171                 struct weston_transform transform;
 172                 struct weston_matrix rotation;
 173         } rotation;
 174
 175         struct {
 176                 struct wl_pointer_grab grab;
 177                 int32_t x, y;
 178                 struct weston_transform parent_transform;
 179                 int32_t initial_up;
 180                 struct wl_seat *seat;
 181                 uint32_t serial;
 182         } popup;
 183
 184         struct {
 185                 int32_t x, y;
 186                 uint32_t flags;
 187         } transient;
 188
 189         struct {
 190                 enum wl_shell_surface_fullscreen_method type;
 191                 struct weston_transform transform; /* matrix from x, y */
 192                 uint32_t framerate;
 193                 struct weston_surface *black_surface;
 194         } fullscreen;
 195
 196         struct ping_timer *ping_timer;
 197
 198         struct weston_transform workspace_transform;
 199
 200         struct weston_output *fullscreen_output;
 201         struct weston_output *output;
 202         struct wl_list link;
 203
 204         const struct weston_shell_client *client;
 205 };
 206
 207 struct shell_grab {
 208         struct wl_pointer_grab grab;
 209         struct shell_surface *shsurf;
 210         struct wl_listener shsurf_destroy_listener;
 211         struct wl_pointer *pointer;
 212 };
 213
 214 struct weston_move_grab {
 215         struct shell_grab base;
 216         wl_fixed_t dx, dy;
 217 };
 218
 219 struct rotate_grab {
 220         struct shell_grab base;
 221         struct weston_matrix rotation;
 222         struct {
 223                 float x;
 224                 float y;
 225         } center;
 226 };
 227
 228 static void
 229 activate(struct desktop_shell *shell, struct weston_surface *es,
 230          struct weston_seat *seat);
 231
 232 static struct workspace *
 233 get_current_workspace(struct desktop_shell *shell);
 234
 235 static struct shell_surface *
 236 get_shell_surface(struct weston_surface *surface);
 237
 238 static struct desktop_shell *
 239 shell_surface_get_shell(struct shell_surface *shsurf);
 240
 241 static bool
 242 shell_surface_is_top_fullscreen(struct shell_surface *shsurf)
 243 {
 244         struct desktop_shell *shell;
 245         struct weston_surface *top_fs_es;
 246
 247         shell = shell_surface_get_shell(shsurf);
 248
 249         if (wl_list_empty(&shell->fullscreen_layer.surface_list))
 250                 return false;
 251
 252         top_fs_es = container_of(shell->fullscreen_layer.surface_list.next,
 253                                  struct weston_surface,
 254                                  layer_link);
 255         return (shsurf == get_shell_surface(top_fs_es));
 256 }
 257
 258 static void
 259 destroy_shell_grab_shsurf(struct wl_listener *listener, void *data)
 260 {
 261         struct shell_grab *grab;
 262
 263         grab = container_of(listener, struct shell_grab,
 264                             shsurf_destroy_listener);
 265
 266         grab->shsurf = NULL;
 267 }
 268
 269 static void
 270 shell_grab_start(struct shell_grab *grab,
 271                  const struct wl_pointer_grab_interface *interface,
 272                  struct shell_surface *shsurf,
 273                  struct wl_pointer *pointer,
 274                  enum desktop_shell_cursor cursor)
 275 {
 276         struct desktop_shell *shell = shsurf->shell;
 277
 278         grab->grab.interface = interface;
 279         grab->shsurf = shsurf;
 280         grab->shsurf_destroy_listener.notify = destroy_shell_grab_shsurf;
 281         wl_signal_add(&shsurf->resource.destroy_signal,
 282                       &grab->shsurf_destroy_listener);
 283
 284         grab->pointer = pointer;
 285         grab->grab.focus = &shsurf->surface->surface;
 286
 287         wl_pointer_start_grab(pointer, &grab->grab);
 288         desktop_shell_send_grab_cursor(shell->child.desktop_shell, cursor);
 289         wl_pointer_set_focus(pointer, &shell->grab_surface->surface,
 290                              wl_fixed_from_int(0), wl_fixed_from_int(0));
 291 }
 292
 293 static void
 294 shell_grab_end(struct shell_grab *grab)
 295 {
 296         if (grab->shsurf)
 297                 wl_list_remove(&grab->shsurf_destroy_listener.link);
 298
 299         wl_pointer_end_grab(grab->pointer);
 300 }
 301
 302 static void
 303 center_on_output(struct weston_surface *surface,
 304                  struct weston_output *output);
 305
 306 static enum weston_keyboard_modifier
 307 get_modifier(char *modifier)
 308 {
 309         if (!modifier)
 310                 return MODIFIER_SUPER;
 311
 312         if (!strcmp("ctrl", modifier))
 313                 return MODIFIER_CTRL;
 314         else if (!strcmp("alt", modifier))
 315                 return MODIFIER_ALT;
 316         else if (!strcmp("super", modifier))
 317                 return MODIFIER_SUPER;
 318         else
 319                 return MODIFIER_SUPER;
 320 }
 321
 322 static enum animation_type
 323 get_animation_type(char *animation)
 324 {
 325         if (!animation)
 326                 return ANIMATION_NONE;
 327
 328         if (!strcmp("zoom", animation))
 329                 return ANIMATION_ZOOM;
 330         else if (!strcmp("fade", animation))
 331                 return ANIMATION_FADE;
 332         else
 333                 return ANIMATION_NONE;
 334 }
 335
 336 static void
 337 shell_configuration(struct desktop_shell *shell)
 338 {
 339         char *config_file;
 340         char *path = NULL;
 341         int duration = 60;
 342         unsigned int num_workspaces = DEFAULT_NUM_WORKSPACES;
 343         char *modifier = NULL;
 344         char *win_animation = NULL;
 345
 346         struct config_key shell_keys[] = {
 347                 { "binding-modifier",   CONFIG_KEY_STRING, &modifier },
 348                 { "animation",          CONFIG_KEY_STRING, &win_animation},
 349                 { "num-workspaces",
 350                         CONFIG_KEY_UNSIGNED_INTEGER, &num_workspaces },
 351         };
 352
 353         struct config_key saver_keys[] = {
 354                 { "path",       CONFIG_KEY_STRING,  &path },
 355                 { "duration",   CONFIG_KEY_INTEGER, &duration },
 356         };
 357
 358         struct config_section cs[] = {
 359                 { "shell", shell_keys, ARRAY_LENGTH(shell_keys), NULL },
 360                 { "screensaver", saver_keys, ARRAY_LENGTH(saver_keys), NULL },
 361         };
 362
 363         config_file = config_file_path("weston.ini");
 364         parse_config_file(config_file, cs, ARRAY_LENGTH(cs), shell);
 365         free(config_file);
 366
 367         shell->screensaver.path = path;
 368         shell->screensaver.duration = duration;
 369         shell->binding_modifier = get_modifier(modifier);
 370         shell->win_animation_type = get_animation_type(win_animation);
 371         shell->workspaces.num = num_workspaces > 0 ? num_workspaces : 1;
 372 }
 373
 374 static void
 375 focus_state_destroy(struct focus_state *state)
 376 {
 377         wl_list_remove(&state->seat_destroy_listener.link);
 378         wl_list_remove(&state->surface_destroy_listener.link);
 379         free(state);
 380 }
 381
 382 static void
 383 focus_state_seat_destroy(struct wl_listener *listener, void *data)
 384 {
 385         struct focus_state *state = container_of(listener,
 386                                                  struct focus_state,
 387                                                  seat_destroy_listener);
 388
 389         wl_list_remove(&state->link);
 390         focus_state_destroy(state);
 391 }
 392
 393 static void
 394 focus_state_surface_destroy(struct wl_listener *listener, void *data)
 395 {
 396         struct focus_state *state = container_of(listener,
 397                                                  struct focus_state,
 398                                                  surface_destroy_listener);
 399         struct desktop_shell *shell;
 400         struct weston_surface *surface, *next;
 401
 402         next = NULL;
 403         wl_list_for_each(surface, &state->ws->layer.surface_list, layer_link) {
 404                 if (surface == state->keyboard_focus)
 405                         continue;
 406
 407                 next = surface;
 408                 break;
 409         }
 410
 411         if (next) {
 412                 shell = state->seat->compositor->shell_interface.shell;
 413                 activate(shell, next, state->seat);
 414         } else {
 415                 wl_list_remove(&state->link);
 416                 focus_state_destroy(state);
 417         }
 418 }
 419
 420 static struct focus_state *
 421 focus_state_create(struct weston_seat *seat, struct workspace *ws)
 422 {
 423         struct focus_state *state;
 424
 425         state = malloc(sizeof *state);
 426         if (state == NULL)
 427                 return NULL;
 428
 429         state->ws = ws;
 430         state->seat = seat;
 431         wl_list_insert(&ws->focus_list, &state->link);
 432
 433         state->seat_destroy_listener.notify = focus_state_seat_destroy;
 434         state->surface_destroy_listener.notify = focus_state_surface_destroy;
 435         wl_signal_add(&seat->seat.destroy_signal,
 436                       &state->seat_destroy_listener);
 437         wl_list_init(&state->surface_destroy_listener.link);
 438
 439         return state;
 440 }
 441
 442 static struct focus_state *
 443 ensure_focus_state(struct desktop_shell *shell, struct weston_seat *seat)
 444 {
 445         struct workspace *ws = get_current_workspace(shell);
 446         struct focus_state *state;
 447
 448         wl_list_for_each(state, &ws->focus_list, link)
 449                 if (state->seat == seat)
 450                         break;
 451
 452         if (&state->link == &ws->focus_list)
 453                 state = focus_state_create(seat, ws);
 454
 455         return state;
 456 }
 457
 458 static void
 459 restore_focus_state(struct desktop_shell *shell, struct workspace *ws)
 460 {
 461         struct focus_state *state, *next;
 462         struct wl_surface *surface;
 463
 464         wl_list_for_each_safe(state, next, &ws->focus_list, link) {
 465                 surface = state->keyboard_focus ?
 466                         &state->keyboard_focus->surface : NULL;
 467
 468                 wl_keyboard_set_focus(state->seat->seat.keyboard, surface);
 469         }
 470 }
 471
 472 static void
 473 replace_focus_state(struct desktop_shell *shell, struct workspace *ws,
 474                     struct weston_seat *seat)
 475 {
 476         struct focus_state *state;
 477         struct wl_surface *surface;
 478
 479         wl_list_for_each(state, &ws->focus_list, link) {
 480                 if (state->seat == seat) {
 481                         surface = seat->seat.keyboard->focus;
 482                         state->keyboard_focus =
 483                                 (struct weston_surface *) surface;
 484                         return;
 485                 }
 486         }
 487 }
 488
 489 static void
 490 drop_focus_state(struct desktop_shell *shell, struct workspace *ws,
 491                  struct weston_surface *surface)
 492 {
 493         struct focus_state *state;
 494
 495         wl_list_for_each(state, &ws->focus_list, link)
 496                 if (state->keyboard_focus == surface)
 497                         state->keyboard_focus = NULL;
 498 }
 499
 500 static void
 501 workspace_destroy(struct workspace *ws)
 502 {
 503         struct focus_state *state, *next;
 504
 505         wl_list_for_each_safe(state, next, &ws->focus_list, link)
 506                 focus_state_destroy(state);
 507
 508         free(ws);
 509 }
 510
 511 static void
 512 seat_destroyed(struct wl_listener *listener, void *data)
 513 {
 514         struct weston_seat *seat = data;
 515         struct focus_state *state, *next;
 516         struct workspace *ws = container_of(listener,
 517                                             struct workspace,
 518                                             seat_destroyed_listener);
 519
 520         wl_list_for_each_safe(state, next, &ws->focus_list, link)
 521                 if (state->seat == seat)
 522                         wl_list_remove(&state->link);
 523 }
 524
 525 static struct workspace *
 526 workspace_create(void)
 527 {
 528         struct workspace *ws = malloc(sizeof *ws);
 529         if (ws == NULL)
 530                 return NULL;
 531
 532         weston_layer_init(&ws->layer, NULL);
 533
 534         wl_list_init(&ws->focus_list);
 535         wl_list_init(&ws->seat_destroyed_listener.link);
 536         ws->seat_destroyed_listener.notify = seat_destroyed;
 537
 538         return ws;
 539 }
 540
 541 static int
 542 workspace_is_empty(struct workspace *ws)
 543 {
 544         return wl_list_empty(&ws->layer.surface_list);
 545 }
 546
 547 static struct workspace *
 548 get_workspace(struct desktop_shell *shell, unsigned int index)
 549 {
 550         struct workspace **pws = shell->workspaces.array.data;
 551         assert(index < shell->workspaces.num);
 552         pws += index;
 553         return *pws;
 554 }
 555
 556 static struct workspace *
 557 get_current_workspace(struct desktop_shell *shell)
 558 {
 559         return get_workspace(shell, shell->workspaces.current);
 560 }
 561
 562 static void
 563 activate_workspace(struct desktop_shell *shell, unsigned int index)
 564 {
 565         struct workspace *ws;
 566
 567         ws = get_workspace(shell, index);
 568         wl_list_insert(&shell->panel_layer.link, &ws->layer.link);
 569
 570         shell->workspaces.current = index;
 571 }
 572
 573 static unsigned int
 574 get_output_height(struct weston_output *output)
 575 {
 576         return abs(output->region.extents.y1 - output->region.extents.y2);
 577 }
 578
 579 static void
 580 surface_translate(struct weston_surface *surface, double d)
 581 {
 582         struct shell_surface *shsurf = get_shell_surface(surface);
 583         struct weston_transform *transform;
 584
 585         transform = &shsurf->workspace_transform;
 586         if (wl_list_empty(&transform->link))
 587                 wl_list_insert(surface->geometry.transformation_list.prev,
 588                                &shsurf->workspace_transform.link);
 589
 590         weston_matrix_init(&shsurf->workspace_transform.matrix);
 591         weston_matrix_translate(&shsurf->workspace_transform.matrix,
 592                                 0.0, d, 0.0);
 593         surface->geometry.dirty = 1;
 594 }
 595
 596 static void
 597 workspace_translate_out(struct workspace *ws, double fraction)
 598 {
 599         struct weston_surface *surface;
 600         unsigned int height;
 601         double d;
 602
 603         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
 604                 height = get_output_height(surface->output);
 605                 d = height * fraction;
 606
 607                 surface_translate(surface, d);
 608         }
 609 }
 610
 611 static void
 612 workspace_translate_in(struct workspace *ws, double fraction)
 613 {
 614         struct weston_surface *surface;
 615         unsigned int height;
 616         double d;
 617
 618         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
 619                 height = get_output_height(surface->output);
 620
 621                 if (fraction > 0)
 622                         d = -(height - height * fraction);
 623                 else
 624                         d = height + height * fraction;
 625
 626                 surface_translate(surface, d);
 627         }
 628 }
 629
 630 static void
 631 broadcast_current_workspace_state(struct desktop_shell *shell)
 632 {
 633         struct wl_resource *resource;
 634
 635         wl_list_for_each(resource, &shell->workspaces.client_list, link)
 636                 workspace_manager_send_state(resource,
 637                                              shell->workspaces.current,
 638                                              shell->workspaces.num);
 639 }
 640
 641 static void
 642 reverse_workspace_change_animation(struct desktop_shell *shell,
 643                                    unsigned int index,
 644                                    struct workspace *from,
 645                                    struct workspace *to)
 646 {
 647         shell->workspaces.current = index;
 648
 649         shell->workspaces.anim_to = to;
 650         shell->workspaces.anim_from = from;
 651         shell->workspaces.anim_dir = -1 * shell->workspaces.anim_dir;
 652         shell->workspaces.anim_timestamp = 0;
 653
 654         weston_compositor_schedule_repaint(shell->compositor);
 655 }
 656
 657 static void
 658 workspace_deactivate_transforms(struct workspace *ws)
 659 {
 660         struct weston_surface *surface;
 661         struct shell_surface *shsurf;
 662
 663         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
 664                 shsurf = get_shell_surface(surface);
 665                 if (!wl_list_empty(&shsurf->workspace_transform.link)) {
 666                         wl_list_remove(&shsurf->workspace_transform.link);
 667                         wl_list_init(&shsurf->workspace_transform.link);
 668                 }
 669                 shsurf->surface->geometry.dirty = 1;
 670         }
 671 }
 672
 673 static void
 674 finish_workspace_change_animation(struct desktop_shell *shell,
 675                                   struct workspace *from,
 676                                   struct workspace *to)
 677 {
 678         weston_compositor_schedule_repaint(shell->compositor);
 679
 680         wl_list_remove(&shell->workspaces.animation.link);
 681         workspace_deactivate_transforms(from);
 682         workspace_deactivate_transforms(to);
 683         shell->workspaces.anim_to = NULL;
 684
 685         wl_list_remove(&shell->workspaces.anim_from->layer.link);
 686 }
 687
 688 static void
 689 animate_workspace_change_frame(struct weston_animation *animation,
 690                                struct weston_output *output, uint32_t msecs)
 691 {
 692         struct desktop_shell *shell =
 693                 container_of(animation, struct desktop_shell,
 694                              workspaces.animation);
 695         struct workspace *from = shell->workspaces.anim_from;
 696         struct workspace *to = shell->workspaces.anim_to;
 697         uint32_t t;
 698         double x, y;
 699
 700         if (workspace_is_empty(from) && workspace_is_empty(to)) {
 701                 finish_workspace_change_animation(shell, from, to);
 702                 return;
 703         }
 704
 705         if (shell->workspaces.anim_timestamp == 0) {
 706                 if (shell->workspaces.anim_current == 0.0)
 707                         shell->workspaces.anim_timestamp = msecs;
 708                 else
 709                         shell->workspaces.anim_timestamp =
 710                                 msecs -
 711                                 /* Invers of movement function 'y' below. */
 712                                 (asin(1.0 - shell->workspaces.anim_current) *
 713                                  DEFAULT_WORKSPACE_CHANGE_ANIMATION_LENGTH *
 714                                  M_2_PI);
 715         }
 716
 717         t = msecs - shell->workspaces.anim_timestamp;
 718
 719         /*
 720          * x = [0, π/2]
 721          * y(x) = sin(x)
 722          */
 723         x = t * (1.0/DEFAULT_WORKSPACE_CHANGE_ANIMATION_LENGTH) * M_PI_2;
 724         y = sin(x);
 725
 726         if (t < DEFAULT_WORKSPACE_CHANGE_ANIMATION_LENGTH) {
 727                 weston_compositor_schedule_repaint(shell->compositor);
 728
 729                 workspace_translate_out(from, shell->workspaces.anim_dir * y);
 730                 workspace_translate_in(to, shell->workspaces.anim_dir * y);
 731                 shell->workspaces.anim_current = y;
 732
 733                 weston_compositor_schedule_repaint(shell->compositor);
 734         }
 735         else
 736                 finish_workspace_change_animation(shell, from, to);
 737 }
 738
 739 static void
 740 animate_workspace_change(struct desktop_shell *shell,
 741                          unsigned int index,
 742                          struct workspace *from,
 743                          struct workspace *to)
 744 {
 745         struct weston_output *output;
 746
 747         int dir;
 748
 749         if (index > shell->workspaces.current)
 750                 dir = -1;
 751         else
 752                 dir = 1;
 753
 754         shell->workspaces.current = index;
 755
 756         shell->workspaces.anim_dir = dir;
 757         shell->workspaces.anim_from = from;
 758         shell->workspaces.anim_to = to;
 759         shell->workspaces.anim_current = 0.0;
 760         shell->workspaces.anim_timestamp = 0;
 761
 762         output = container_of(shell->compositor->output_list.next,
 763                               struct weston_output, link);
 764         wl_list_insert(&output->animation_list,
 765                        &shell->workspaces.animation.link);
 766
 767         wl_list_insert(from->layer.link.prev, &to->layer.link);
 768
 769         workspace_translate_in(to, 0);
 770
 771         restore_focus_state(shell, to);
 772
 773         weston_compositor_schedule_repaint(shell->compositor);
 774 }
 775
 776 static void
 777 update_workspace(struct desktop_shell *shell, unsigned int index,
 778                  struct workspace *from, struct workspace *to)
 779 {
 780         shell->workspaces.current = index;
 781         wl_list_insert(&from->layer.link, &to->layer.link);
 782         wl_list_remove(&from->layer.link);
 783 }
 784
 785 static void
 786 change_workspace(struct desktop_shell *shell, unsigned int index)
 787 {
 788         struct workspace *from;
 789         struct workspace *to;
 790
 791         if (index == shell->workspaces.current)
 792                 return;
 793
 794         /* Don't change workspace when there is any fullscreen surfaces. */
 795         if (!wl_list_empty(&shell->fullscreen_layer.surface_list))
 796                 return;
 797
 798         from = get_current_workspace(shell);
 799         to = get_workspace(shell, index);
 800
 801         if (shell->workspaces.anim_from == to &&
 802             shell->workspaces.anim_to == from) {
 803                 restore_focus_state(shell, to);
 804                 reverse_workspace_change_animation(shell, index, from, to);
 805                 broadcast_current_workspace_state(shell);
 806                 return;
 807         }
 808
 809         if (shell->workspaces.anim_to != NULL)
 810                 finish_workspace_change_animation(shell,
 811                                                   shell->workspaces.anim_from,
 812                                                   shell->workspaces.anim_to);
 813
 814         restore_focus_state(shell, to);
 815
 816         if (workspace_is_empty(to) && workspace_is_empty(from))
 817                 update_workspace(shell, index, from, to);
 818         else
 819                 animate_workspace_change(shell, index, from, to);
 820
 821         broadcast_current_workspace_state(shell);
 822 }
 823
 824 static bool
 825 workspace_has_only(struct workspace *ws, struct weston_surface *surface)
 826 {
 827         struct wl_list *list = &ws->layer.surface_list;
 828         struct wl_list *e;
 829
 830         if (wl_list_empty(list))
 831                 return false;
 832
 833         e = list->next;
 834
 835         if (e->next != list)
 836                 return false;
 837
 838         return container_of(e, struct weston_surface, layer_link) == surface;
 839 }
 840
 841 static void
 842 move_surface_to_workspace(struct desktop_shell *shell,
 843                           struct weston_surface *surface,
 844                           uint32_t workspace)
 845 {
 846         struct workspace *from;
 847         struct workspace *to;
 848         struct weston_seat *seat;
 849
 850         if (workspace == shell->workspaces.current)
 851                 return;
 852
 853         if (workspace >= shell->workspaces.num)
 854                 workspace = shell->workspaces.num - 1;
 855
 856         from = get_current_workspace(shell);
 857         to = get_workspace(shell, workspace);
 858
 859         wl_list_remove(&surface->layer_link);
 860         wl_list_insert(&to->layer.surface_list, &surface->layer_link);
 861
 862         drop_focus_state(shell, from, surface);
 863         wl_list_for_each(seat, &shell->compositor->seat_list, link)
 864                 if (seat->has_keyboard &&
 865                     seat->keyboard.focus == &surface->surface)
 866                         wl_keyboard_set_focus(&seat->keyboard, NULL);
 867
 868         weston_surface_damage_below(surface);
 869 }
 870
 871 static void
 872 take_surface_to_workspace_by_seat(struct desktop_shell *shell,
 873                                   struct wl_seat *wl_seat,
 874                                   unsigned int index)
 875 {
 876         struct weston_seat *seat = (struct weston_seat *) wl_seat;
 877         struct weston_surface *surface =
 878                 (struct weston_surface *) wl_seat->keyboard->focus;
 879         struct shell_surface *shsurf;
 880         struct workspace *from;
 881         struct workspace *to;
 882         struct focus_state *state;
 883
 884         if (surface == NULL ||
 885             index == shell->workspaces.current)
 886                 return;
 887
 888         from = get_current_workspace(shell);
 889         to = get_workspace(shell, index);
 890
 891         wl_list_remove(&surface->layer_link);
 892         wl_list_insert(&to->layer.surface_list, &surface->layer_link);
 893
 894         replace_focus_state(shell, to, seat);
 895         drop_focus_state(shell, from, surface);
 896
 897         if (shell->workspaces.anim_from == to &&
 898             shell->workspaces.anim_to == from) {
 899                 wl_list_remove(&to->layer.link);
 900                 wl_list_insert(from->layer.link.prev, &to->layer.link);
 901
 902                 reverse_workspace_change_animation(shell, index, from, to);
 903                 broadcast_current_workspace_state(shell);
 904
 905                 return;
 906         }
 907
 908         if (shell->workspaces.anim_to != NULL)
 909                 finish_workspace_change_animation(shell,
 910                                                   shell->workspaces.anim_from,
 911                                                   shell->workspaces.anim_to);
 912
 913         if (workspace_is_empty(from) &&
 914             workspace_has_only(to, surface))
 915                 update_workspace(shell, index, from, to);
 916         else {
 917                 shsurf = get_shell_surface(surface);
 918                 if (wl_list_empty(&shsurf->workspace_transform.link))
 919                         wl_list_insert(&shell->workspaces.anim_sticky_list,
 920                                        &shsurf->workspace_transform.link);
 921
 922                 animate_workspace_change(shell, index, from, to);
 923         }
 924
 925         broadcast_current_workspace_state(shell);
 926
 927         state = ensure_focus_state(shell, seat);
 928         if (state != NULL)
 929                 state->keyboard_focus = surface;
 930 }
 931
 932 static void
 933 workspace_manager_move_surface(struct wl_client *client,
 934                                struct wl_resource *resource,
 935                                struct wl_resource *surface_resource,
 936                                uint32_t workspace)
 937 {
 938         struct desktop_shell *shell = resource->data;
 939         struct weston_surface *surface =
 940                 (struct weston_surface *) surface_resource;
 941
 942         move_surface_to_workspace(shell, surface, workspace);
 943 }
 944
 945 static const struct workspace_manager_interface workspace_manager_implementation = {
 946         workspace_manager_move_surface,
 947 };
 948
 949 static void
 950 unbind_resource(struct wl_resource *resource)
 951 {
 952         wl_list_remove(&resource->link);
 953         free(resource);
 954 }
 955
 956 static void
 957 bind_workspace_manager(struct wl_client *client,
 958                        void *data, uint32_t version, uint32_t id)
 959 {
 960         struct desktop_shell *shell = data;
 961         struct wl_resource *resource;
 962
 963         resource = wl_client_add_object(client, &workspace_manager_interface,
 964                                         &workspace_manager_implementation,
 965                                         id, shell);
 966
 967         if (resource == NULL) {
 968                 weston_log("couldn't add workspace manager object");
 969                 return;
 970         }
 971
 972         resource->destroy = unbind_resource;
 973         wl_list_insert(&shell->workspaces.client_list, &resource->link);
 974
 975         workspace_manager_send_state(resource,
 976                                      shell->workspaces.current,
 977                                      shell->workspaces.num);
 978 }
 979
 980 static void
 981 noop_grab_focus(struct wl_pointer_grab *grab,
 982                 struct wl_surface *surface, wl_fixed_t x, wl_fixed_t y)
 983 {
 984         grab->focus = NULL;
 985 }
 986
 987 static void
 988 move_grab_motion(struct wl_pointer_grab *grab,
 989                  uint32_t time, wl_fixed_t x, wl_fixed_t y)
 990 {
 991         struct weston_move_grab *move = (struct weston_move_grab *) grab;
 992         struct wl_pointer *pointer = grab->pointer;
 993         struct shell_surface *shsurf = move->base.shsurf;
 994         struct weston_surface *es;
 995         int dx = wl_fixed_to_int(pointer->x + move->dx);
 996         int dy = wl_fixed_to_int(pointer->y + move->dy);
 997
 998         if (!shsurf)
 999                 return;
1000
1001         es = shsurf->surface;
1002
1003         weston_surface_configure(es, dx, dy,
1004                                  es->geometry.width, es->geometry.height);
1005
1006         weston_compositor_schedule_repaint(es->compositor);
1007 }
1008
1009 static void
1010 move_grab_button(struct wl_pointer_grab *grab,
1011                  uint32_t time, uint32_t button, uint32_t state_w)
1012 {
1013         struct shell_grab *shell_grab = container_of(grab, struct shell_grab,
1014                                                     grab);
1015         struct wl_pointer *pointer = grab->pointer;
1016         enum wl_pointer_button_state state = state_w;
1017
1018         if (pointer->button_count == 0 &&
1019             state == WL_POINTER_BUTTON_STATE_RELEASED) {
1020                 shell_grab_end(shell_grab);
1021                 free(grab);
1022         }
1023 }
1024
1025 static const struct wl_pointer_grab_interface move_grab_interface = {
1026         noop_grab_focus,
1027         move_grab_motion,
1028         move_grab_button,
1029 };
1030
1031 static int
1032 surface_move(struct shell_surface *shsurf, struct weston_seat *ws)
1033 {
1034         struct weston_move_grab *move;
1035
1036         if (!shsurf)
1037                 return -1;
1038
1039         if (shsurf->type == SHELL_SURFACE_FULLSCREEN)
1040                 return 0;
1041
1042         move = malloc(sizeof *move);
1043         if (!move)
1044                 return -1;
1045
1046         move->dx = wl_fixed_from_double(shsurf->surface->geometry.x) -
1047                         ws->seat.pointer->grab_x;
1048         move->dy = wl_fixed_from_double(shsurf->surface->geometry.y) -
1049                         ws->seat.pointer->grab_y;
1050
1051         shell_grab_start(&move->base, &move_grab_interface, shsurf,
1052                          ws->seat.pointer, DESKTOP_SHELL_CURSOR_MOVE);
1053
1054         return 0;
1055 }
1056
1057 static void
1058 shell_surface_move(struct wl_client *client, struct wl_resource *resource,
1059                    struct wl_resource *seat_resource, uint32_t serial)
1060 {
1061         struct weston_seat *ws = seat_resource->data;
1062         struct shell_surface *shsurf = resource->data;
1063
1064         if (ws->seat.pointer->button_count == 0 ||
1065             ws->seat.pointer->grab_serial != serial ||
1066             ws->seat.pointer->focus != &shsurf->surface->surface)
1067                 return;
1068
1069         if (surface_move(shsurf, ws) < 0)
1070                 wl_resource_post_no_memory(resource);
1071 }
1072
1073 struct weston_resize_grab {
1074         struct shell_grab base;
1075         uint32_t edges;
1076         int32_t width, height;
1077 };
1078
1079 static void
1080 resize_grab_motion(struct wl_pointer_grab *grab,
1081                    uint32_t time, wl_fixed_t x, wl_fixed_t y)
1082 {
1083         struct weston_resize_grab *resize = (struct weston_resize_grab *) grab;
1084         struct wl_pointer *pointer = grab->pointer;
1085         struct shell_surface *shsurf = resize->base.shsurf;
1086         int32_t width, height;
1087         wl_fixed_t from_x, from_y;
1088         wl_fixed_t to_x, to_y;
1089
1090         if (!shsurf)
1091                 return;
1092
1093         weston_surface_from_global_fixed(shsurf->surface,
1094                                          pointer->grab_x, pointer->grab_y,
1095                                          &from_x, &from_y);
1096         weston_surface_from_global_fixed(shsurf->surface,
1097                                          pointer->x, pointer->y, &to_x, &to_y);
1098
1099         width = resize->width;
1100         if (resize->edges & WL_SHELL_SURFACE_RESIZE_LEFT) {
1101                 width += wl_fixed_to_int(from_x - to_x);
1102         } else if (resize->edges & WL_SHELL_SURFACE_RESIZE_RIGHT) {
1103                 width += wl_fixed_to_int(to_x - from_x);
1104         }
1105
1106         height = resize->height;
1107         if (resize->edges & WL_SHELL_SURFACE_RESIZE_TOP) {
1108                 height += wl_fixed_to_int(from_y - to_y);
1109         } else if (resize->edges & WL_SHELL_SURFACE_RESIZE_BOTTOM) {
1110                 height += wl_fixed_to_int(to_y - from_y);
1111         }
1112
1113         shsurf->client->send_configure(shsurf->surface,
1114                                        resize->edges, width, height);
1115 }
1116
1117 static void
1118 send_configure(struct weston_surface *surface,
1119                uint32_t edges, int32_t width, int32_t height)
1120 {
1121         struct shell_surface *shsurf = get_shell_surface(surface);
1122
1123         wl_shell_surface_send_configure(&shsurf->resource,
1124                                         edges, width, height);
1125 }
1126
1127 static const struct weston_shell_client shell_client = {
1128         send_configure
1129 };
1130
1131 static void
1132 resize_grab_button(struct wl_pointer_grab *grab,
1133                    uint32_t time, uint32_t button, uint32_t state_w)
1134 {
1135         struct weston_resize_grab *resize = (struct weston_resize_grab *) grab;
1136         struct wl_pointer *pointer = grab->pointer;
1137         enum wl_pointer_button_state state = state_w;
1138
1139         if (pointer->button_count == 0 &&
1140             state == WL_POINTER_BUTTON_STATE_RELEASED) {
1141                 shell_grab_end(&resize->base);
1142                 free(grab);
1143         }
1144 }
1145
1146 static const struct wl_pointer_grab_interface resize_grab_interface = {
1147         noop_grab_focus,
1148         resize_grab_motion,
1149         resize_grab_button,
1150 };
1151
1152 static int
1153 surface_resize(struct shell_surface *shsurf,
1154                struct weston_seat *ws, uint32_t edges)
1155 {
1156         struct weston_resize_grab *resize;
1157
1158         if (shsurf->type == SHELL_SURFACE_FULLSCREEN)
1159                 return 0;
1160
1161         if (edges == 0 || edges > 15 ||
1162             (edges & 3) == 3 || (edges & 12) == 12)
1163                 return 0;
1164
1165         resize = malloc(sizeof *resize);
1166         if (!resize)
1167                 return -1;
1168
1169         resize->edges = edges;
1170         resize->width = shsurf->surface->geometry.width;
1171         resize->height = shsurf->surface->geometry.height;
1172
1173         shell_grab_start(&resize->base, &resize_grab_interface, shsurf,
1174                          ws->seat.pointer, edges);
1175
1176         return 0;
1177 }
1178
1179 static void
1180 shell_surface_resize(struct wl_client *client, struct wl_resource *resource,
1181                      struct wl_resource *seat_resource, uint32_t serial,
1182                      uint32_t edges)
1183 {
1184         struct weston_seat *ws = seat_resource->data;
1185         struct shell_surface *shsurf = resource->data;
1186
1187         if (shsurf->type == SHELL_SURFACE_FULLSCREEN)
1188                 return;
1189
1190         if (ws->seat.pointer->button_count == 0 ||
1191             ws->seat.pointer->grab_serial != serial ||
1192             ws->seat.pointer->focus != &shsurf->surface->surface)
1193                 return;
1194
1195         if (surface_resize(shsurf, ws, edges) < 0)
1196                 wl_resource_post_no_memory(resource);
1197 }
1198
1199 static void
1200 busy_cursor_grab_focus(struct wl_pointer_grab *base,
1201                        struct wl_surface *surface, int32_t x, int32_t y)
1202 {
1203         struct shell_grab *grab = (struct shell_grab *) base;
1204
1205         if (grab->grab.focus != surface) {
1206                 shell_grab_end(grab);
1207                 free(grab);
1208         }
1209 }
1210
1211 static void
1212 busy_cursor_grab_motion(struct wl_pointer_grab *grab,
1213                         uint32_t time, int32_t x, int32_t y)
1214 {
1215 }
1216
1217 static void
1218 busy_cursor_grab_button(struct wl_pointer_grab *base,
1219                         uint32_t time, uint32_t button, uint32_t state)
1220 {
1221         struct shell_grab *grab = (struct shell_grab *) base;
1222         struct shell_surface *shsurf;
1223         struct weston_surface *surface =
1224                 (struct weston_surface *) grab->grab.pointer->current;
1225         struct weston_seat *seat =
1226                 (struct weston_seat *) grab->grab.pointer->seat;
1227
1228         shsurf = get_shell_surface(surface);
1229         if (shsurf && button == BTN_LEFT && state) {
1230                 activate(shsurf->shell, shsurf->surface, seat);
1231                 surface_move(shsurf, seat);
1232         }
1233 }
1234
1235 static const struct wl_pointer_grab_interface busy_cursor_grab_interface = {
1236         busy_cursor_grab_focus,
1237         busy_cursor_grab_motion,
1238         busy_cursor_grab_button,
1239 };
1240
1241 static void
1242 set_busy_cursor(struct shell_surface *shsurf, struct wl_pointer *pointer)
1243 {
1244         struct shell_grab *grab;
1245
1246         grab = malloc(sizeof *grab);
1247         if (!grab)
1248                 return;
1249
1250         shell_grab_start(grab, &busy_cursor_grab_interface, shsurf, pointer,
1251                          DESKTOP_SHELL_CURSOR_BUSY);
1252 }
1253
1254 static void
1255 end_busy_cursor(struct shell_surface *shsurf, struct wl_pointer *pointer)
1256 {
1257         struct shell_grab *grab = (struct shell_grab *) pointer->grab;
1258
1259         if (grab->grab.interface == &busy_cursor_grab_interface) {
1260                 shell_grab_end(grab);
1261                 free(grab);
1262         }
1263 }
1264
1265 static void
1266 ping_timer_destroy(struct shell_surface *shsurf)
1267 {
1268         if (!shsurf || !shsurf->ping_timer)
1269                 return;
1270
1271         if (shsurf->ping_timer->source)
1272                 wl_event_source_remove(shsurf->ping_timer->source);
1273
1274         free(shsurf->ping_timer);
1275         shsurf->ping_timer = NULL;
1276 }
1277
1278 static int
1279 ping_timeout_handler(void *data)
1280 {
1281         struct shell_surface *shsurf = data;
1282         struct weston_seat *seat;
1283
1284         /* Client is not responding */
1285         shsurf->unresponsive = 1;
1286
1287         wl_list_for_each(seat, &shsurf->surface->compositor->seat_list, link)
1288                 if (seat->seat.pointer->focus == &shsurf->surface->surface)
1289                         set_busy_cursor(shsurf, seat->seat.pointer);
1290
1291         return 1;
1292 }
1293
1294 static void
1295 ping_handler(struct weston_surface *surface, uint32_t serial)
1296 {
1297         struct shell_surface *shsurf = get_shell_surface(surface);
1298         struct wl_event_loop *loop;
1299         int ping_timeout = 200;
1300
1301         if (!shsurf)
1302                 return;
1303         if (!shsurf->resource.client)
1304                 return;
1305
1306         if (shsurf->surface == shsurf->shell->grab_surface)
1307                 return;
1308
1309         if (!shsurf->ping_timer) {
1310                 shsurf->ping_timer = malloc(sizeof *shsurf->ping_timer);
1311                 if (!shsurf->ping_timer)
1312                         return;
1313
1314                 shsurf->ping_timer->serial = serial;
1315                 loop = wl_display_get_event_loop(surface->compositor->wl_display);
1316                 shsurf->ping_timer->source =
1317                         wl_event_loop_add_timer(loop, ping_timeout_handler, shsurf);
1318                 wl_event_source_timer_update(shsurf->ping_timer->source, ping_timeout);
1319
1320                 wl_shell_surface_send_ping(&shsurf->resource, serial);
1321         }
1322 }
1323
1324 static void
1325 handle_pointer_focus(struct wl_listener *listener, void *data)
1326 {
1327         struct wl_pointer *pointer = data;
1328         struct weston_surface *surface =
1329                 (struct weston_surface *) pointer->focus;
1330         struct weston_compositor *compositor;
1331         struct shell_surface *shsurf;
1332         uint32_t serial;
1333
1334         if (!surface)
1335                 return;
1336
1337         compositor = surface->compositor;
1338         shsurf = get_shell_surface(surface);
1339
1340         if (shsurf && shsurf->unresponsive) {
1341                 set_busy_cursor(shsurf, pointer);
1342         } else {
1343                 serial = wl_display_next_serial(compositor->wl_display);
1344                 ping_handler(surface, serial);
1345         }
1346 }
1347
1348 static void
1349 create_pointer_focus_listener(struct weston_seat *seat)
1350 {
1351         struct wl_listener *listener;
1352
1353         if (!seat->seat.pointer)
1354                 return;
1355
1356         listener = malloc(sizeof *listener);
1357         listener->notify = handle_pointer_focus;
1358         wl_signal_add(&seat->seat.pointer->focus_signal, listener);
1359 }
1360
1361 static void
1362 shell_surface_pong(struct wl_client *client, struct wl_resource *resource,
1363                                                         uint32_t serial)
1364 {
1365         struct shell_surface *shsurf = resource->data;
1366         struct desktop_shell *shell = shsurf->shell;
1367         struct weston_seat *seat;
1368         struct weston_compositor *ec = shsurf->surface->compositor;
1369         struct wl_pointer *pointer;
1370         int was_unresponsive;
1371
1372         if (shsurf->ping_timer == NULL)
1373                 /* Just ignore unsolicited pong. */
1374                 return;
1375
1376         if (shsurf->ping_timer->serial == serial) {
1377                 was_unresponsive = shsurf->unresponsive;
1378                 shsurf->unresponsive = 0;
1379                 if (was_unresponsive) {
1380                         /* Received pong from previously unresponsive client */
1381                         wl_list_for_each(seat, &ec->seat_list, link) {
1382                                 pointer = seat->seat.pointer;
1383                                 if (pointer->focus ==
1384                                     &shell->grab_surface->surface &&
1385                                     pointer->current ==
1386                                     &shsurf->surface->surface)
1387                                         end_busy_cursor(shsurf, pointer);
1388                         }
1389                 }
1390                 ping_timer_destroy(shsurf);
1391         }
1392 }
1393
1394 static void
1395 shell_surface_set_title(struct wl_client *client,
1396                         struct wl_resource *resource, const char *title)
1397 {
1398         struct shell_surface *shsurf = resource->data;
1399
1400         free(shsurf->title);
1401         shsurf->title = strdup(title);
1402 }
1403
1404 static void
1405 shell_surface_set_class(struct wl_client *client,
1406                         struct wl_resource *resource, const char *class)
1407 {
1408         struct shell_surface *shsurf = resource->data;
1409
1410         free(shsurf->class);
1411         shsurf->class = strdup(class);
1412 }
1413
1414 static struct weston_output *
1415 get_default_output(struct weston_compositor *compositor)
1416 {
1417         return container_of(compositor->output_list.next,
1418                             struct weston_output, link);
1419 }
1420
1421 static void
1422 shell_unset_fullscreen(struct shell_surface *shsurf)
1423 {
1424         struct workspace *ws;
1425         /* undo all fullscreen things here */
1426         if (shsurf->fullscreen.type == WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER &&
1427             shell_surface_is_top_fullscreen(shsurf)) {
1428                 weston_output_switch_mode(shsurf->fullscreen_output,
1429                                           shsurf->fullscreen_output->origin);
1430         }
1431         shsurf->fullscreen.type = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
1432         shsurf->fullscreen.framerate = 0;
1433         wl_list_remove(&shsurf->fullscreen.transform.link);
1434         wl_list_init(&shsurf->fullscreen.transform.link);
1435         if (shsurf->fullscreen.black_surface)
1436                 weston_surface_destroy(shsurf->fullscreen.black_surface);
1437         shsurf->fullscreen.black_surface = NULL;
1438         shsurf->fullscreen_output = NULL;
1439         weston_surface_set_position(shsurf->surface,
1440                                     shsurf->saved_x, shsurf->saved_y);
1441         if (shsurf->saved_rotation_valid) {
1442                 wl_list_insert(&shsurf->surface->geometry.transformation_list,
1443                                &shsurf->rotation.transform.link);
1444                 shsurf->saved_rotation_valid = false;
1445         }
1446
1447         ws = get_current_workspace(shsurf->shell);
1448         wl_list_remove(&shsurf->surface->layer_link);
1449         wl_list_insert(&ws->layer.surface_list, &shsurf->surface->layer_link);
1450 }
1451
1452 static int
1453 reset_shell_surface_type(struct shell_surface *surface)
1454 {
1455         switch (surface->type) {
1456         case SHELL_SURFACE_FULLSCREEN:
1457                 shell_unset_fullscreen(surface);
1458                 break;
1459         case SHELL_SURFACE_MAXIMIZED:
1460                 surface->output = get_default_output(surface->surface->compositor);
1461                 weston_surface_set_position(surface->surface,
1462                                             surface->saved_x,
1463                                             surface->saved_y);
1464                 break;
1465         case SHELL_SURFACE_NONE:
1466         case SHELL_SURFACE_TOPLEVEL:
1467         case SHELL_SURFACE_TRANSIENT:
1468         case SHELL_SURFACE_POPUP:
1469                 break;
1470         }
1471
1472         surface->type = SHELL_SURFACE_NONE;
1473         return 0;
1474 }
1475
1476 static void
1477 set_surface_type(struct shell_surface *shsurf)
1478 {
1479         struct weston_surface *surface = shsurf->surface;
1480         struct weston_surface *pes = shsurf->parent;
1481
1482         reset_shell_surface_type(shsurf);
1483
1484         shsurf->type = shsurf->next_type;
1485         shsurf->next_type = SHELL_SURFACE_NONE;
1486
1487         switch (shsurf->type) {
1488         case SHELL_SURFACE_TOPLEVEL:
1489                 break;
1490         case SHELL_SURFACE_TRANSIENT:
1491                 weston_surface_set_position(surface,
1492                                 pes->geometry.x + shsurf->transient.x,
1493                                 pes->geometry.y + shsurf->transient.y);
1494                 break;
1495
1496         case SHELL_SURFACE_MAXIMIZED:
1497                 shsurf->saved_x = surface->geometry.x;
1498                 shsurf->saved_y = surface->geometry.y;
1499                 shsurf->saved_position_valid = true;
1500                 break;
1501
1502         case SHELL_SURFACE_FULLSCREEN:
1503                 shsurf->saved_x = surface->geometry.x;
1504                 shsurf->saved_y = surface->geometry.y;
1505                 shsurf->saved_position_valid = true;
1506
1507                 if (!wl_list_empty(&shsurf->rotation.transform.link)) {
1508                         wl_list_remove(&shsurf->rotation.transform.link);
1509                         wl_list_init(&shsurf->rotation.transform.link);
1510                         shsurf->surface->geometry.dirty = 1;
1511                         shsurf->saved_rotation_valid = true;
1512                 }
1513                 break;
1514
1515         default:
1516                 break;
1517         }
1518 }
1519
1520 static void
1521 set_toplevel(struct shell_surface *shsurf)
1522 {
1523        shsurf->next_type = SHELL_SURFACE_TOPLEVEL;
1524 }
1525
1526 static void
1527 shell_surface_set_toplevel(struct wl_client *client,
1528                            struct wl_resource *resource)
1529 {
1530         struct shell_surface *surface = resource->data;
1531
1532         set_toplevel(surface);
1533 }
1534
1535 static void
1536 set_transient(struct shell_surface *shsurf,
1537               struct weston_surface *parent, int x, int y, uint32_t flags)
1538 {
1539         /* assign to parents output */
1540         shsurf->parent = parent;
1541         shsurf->transient.x = x;
1542         shsurf->transient.y = y;
1543         shsurf->transient.flags = flags;
1544         shsurf->next_type = SHELL_SURFACE_TRANSIENT;
1545 }
1546
1547 static void
1548 shell_surface_set_transient(struct wl_client *client,
1549                             struct wl_resource *resource,
1550                             struct wl_resource *parent_resource,
1551                             int x, int y, uint32_t flags)
1552 {
1553         struct shell_surface *shsurf = resource->data;
1554         struct weston_surface *parent = parent_resource->data;
1555
1556         set_transient(shsurf, parent, x, y, flags);
1557 }
1558
1559 static struct desktop_shell *
1560 shell_surface_get_shell(struct shell_surface *shsurf)
1561 {
1562         return shsurf->shell;
1563 }
1564
1565 static int
1566 get_output_panel_height(struct desktop_shell *shell,
1567                         struct weston_output *output)
1568 {
1569         struct weston_surface *surface;
1570         int panel_height = 0;
1571
1572         if (!output)
1573                 return 0;
1574
1575         wl_list_for_each(surface, &shell->panel_layer.surface_list, layer_link) {
1576                 if (surface->output == output) {
1577                         panel_height = surface->geometry.height;
1578                         break;
1579                 }
1580         }
1581
1582         return panel_height;
1583 }
1584
1585 static void
1586 shell_surface_set_maximized(struct wl_client *client,
1587                             struct wl_resource *resource,
1588                             struct wl_resource *output_resource )
1589 {
1590         struct shell_surface *shsurf = resource->data;
1591         struct weston_surface *es = shsurf->surface;
1592         struct desktop_shell *shell = NULL;
1593         uint32_t edges = 0, panel_height = 0;
1594
1595         /* get the default output, if the client set it as NULL
1596            check whether the ouput is available */
1597         if (output_resource)
1598                 shsurf->output = output_resource->data;
1599         else if (es->output)
1600                 shsurf->output = es->output;
1601         else
1602                 shsurf->output = get_default_output(es->compositor);
1603
1604         shell = shell_surface_get_shell(shsurf);
1605         panel_height = get_output_panel_height(shell, shsurf->output);
1606         edges = WL_SHELL_SURFACE_RESIZE_TOP|WL_SHELL_SURFACE_RESIZE_LEFT;
1607
1608         shsurf->client->send_configure(shsurf->surface, edges,
1609                                        shsurf->output->width,
1610                                        shsurf->output->height - panel_height);
1611
1612         shsurf->next_type = SHELL_SURFACE_MAXIMIZED;
1613 }
1614
1615 static void
1616 black_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy);
1617
1618 static struct weston_surface *
1619 create_black_surface(struct weston_compositor *ec,
1620                      struct weston_surface *fs_surface,
1621                      float x, float y, int w, int h)
1622 {
1623         struct weston_surface *surface = NULL;
1624
1625         surface = weston_surface_create(ec);
1626         if (surface == NULL) {
1627                 weston_log("no memory\n");
1628                 return NULL;
1629         }
1630
1631         surface->configure = black_surface_configure;
1632         surface->private = fs_surface;
1633         weston_surface_configure(surface, x, y, w, h);
1634         weston_surface_set_color(surface, 0.0, 0.0, 0.0, 1);
1635         pixman_region32_fini(&surface->opaque);
1636         pixman_region32_init_rect(&surface->opaque, 0, 0, w, h);
1637
1638         return surface;
1639 }
1640
1641 /* Create black surface and append it to the associated fullscreen surface.
1642  * Handle size dismatch and positioning according to the method. */
1643 static void
1644 shell_configure_fullscreen(struct shell_surface *shsurf)
1645 {
1646         struct weston_output *output = shsurf->fullscreen_output;
1647         struct weston_surface *surface = shsurf->surface;
1648         struct weston_matrix *matrix;
1649         float scale, output_aspect, surface_aspect, x, y;
1650
1651         if (!shsurf->fullscreen.black_surface)
1652                 shsurf->fullscreen.black_surface =
1653                         create_black_surface(surface->compositor,
1654                                              surface,
1655                                              output->x, output->y,
1656                                              output->width,
1657                                              output->height);
1658
1659         wl_list_remove(&shsurf->fullscreen.black_surface->layer_link);
1660         wl_list_insert(&surface->layer_link,
1661                        &shsurf->fullscreen.black_surface->layer_link);
1662         shsurf->fullscreen.black_surface->output = output;
1663
1664         switch (shsurf->fullscreen.type) {
1665         case WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT:
1666                 if (surface->buffer)
1667                         center_on_output(surface, shsurf->fullscreen_output);
1668                 break;
1669         case WL_SHELL_SURFACE_FULLSCREEN_METHOD_SCALE:
1670                 matrix = &shsurf->fullscreen.transform.matrix;
1671                 weston_matrix_init(matrix);
1672
1673                 output_aspect = (float) output->width /
1674                         (float) output->height;
1675                 surface_aspect = (float) surface->geometry.width /
1676                         (float) surface->geometry.height;
1677                 if (output_aspect < surface_aspect)
1678                         scale = (float) output->width /
1679                                 (float) surface->geometry.width;
1680                 else
1681                         scale = (float) output->height /
1682                                 (float) surface->geometry.height;
1683
1684                 weston_matrix_scale(matrix, scale, scale, 1);
1685                 wl_list_remove(&shsurf->fullscreen.transform.link);
1686                 wl_list_insert(&surface->geometry.transformation_list,
1687                                &shsurf->fullscreen.transform.link);
1688                 x = output->x + (output->width - surface->geometry.width * scale) / 2;
1689                 y = output->y + (output->height - surface->geometry.height * scale) / 2;
1690                 weston_surface_set_position(surface, x, y);
1691
1692                 break;
1693         case WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER:
1694                 if (shell_surface_is_top_fullscreen(shsurf)) {
1695                         struct weston_mode mode = {0,
1696                                 surface->geometry.width,
1697                                 surface->geometry.height,
1698                                 shsurf->fullscreen.framerate};
1699
1700                         if (weston_output_switch_mode(output, &mode) == 0) {
1701                                 weston_surface_configure(shsurf->fullscreen.black_surface,
1702                                                          output->x, output->y,
1703                                                          output->width,
1704                                                          output->height);
1705                                 weston_surface_set_position(surface, output->x, output->y);
1706                                 break;
1707                         }
1708                 }
1709                 break;
1710         case WL_SHELL_SURFACE_FULLSCREEN_METHOD_FILL:
1711                 break;
1712         default:
1713                 break;
1714         }
1715 }
1716
1717 /* make the fullscreen and black surface at the top */
1718 static void
1719 shell_stack_fullscreen(struct shell_surface *shsurf)
1720 {
1721         struct weston_output *output = shsurf->fullscreen_output;
1722         struct weston_surface *surface = shsurf->surface;
1723         struct desktop_shell *shell = shell_surface_get_shell(shsurf);
1724
1725         wl_list_remove(&surface->layer_link);
1726         wl_list_insert(&shell->fullscreen_layer.surface_list,
1727                        &surface->layer_link);
1728         weston_surface_damage(surface);
1729
1730         if (!shsurf->fullscreen.black_surface)
1731                 shsurf->fullscreen.black_surface =
1732                         create_black_surface(surface->compositor,
1733                                              surface,
1734                                              output->x, output->y,
1735                                              output->width,
1736                                              output->height);
1737
1738         wl_list_remove(&shsurf->fullscreen.black_surface->layer_link);
1739         wl_list_insert(&surface->layer_link,
1740                        &shsurf->fullscreen.black_surface->layer_link);
1741         weston_surface_damage(shsurf->fullscreen.black_surface);
1742 }
1743
1744 static void
1745 shell_map_fullscreen(struct shell_surface *shsurf)
1746 {
1747         shell_stack_fullscreen(shsurf);
1748         shell_configure_fullscreen(shsurf);
1749 }
1750
1751 static void
1752 shell_surface_set_fullscreen(struct wl_client *client,
1753                              struct wl_resource *resource,
1754                              uint32_t method,
1755                              uint32_t framerate,
1756                              struct wl_resource *output_resource)
1757 {
1758         struct shell_surface *shsurf = resource->data;
1759         struct weston_surface *es = shsurf->surface;
1760
1761         if (output_resource)
1762                 shsurf->output = output_resource->data;
1763         else if (es->output)
1764                 shsurf->output = es->output;
1765         else
1766                 shsurf->output = get_default_output(es->compositor);
1767
1768         shsurf->fullscreen_output = shsurf->output;
1769         shsurf->fullscreen.type = method;
1770         shsurf->fullscreen.framerate = framerate;
1771         shsurf->next_type = SHELL_SURFACE_FULLSCREEN;
1772
1773         shsurf->client->send_configure(shsurf->surface, 0,
1774                                        shsurf->output->width,
1775                                        shsurf->output->height);
1776 }
1777
1778 static void
1779 popup_grab_focus(struct wl_pointer_grab *grab,
1780                  struct wl_surface *surface,
1781                  wl_fixed_t x,
1782                  wl_fixed_t y)
1783 {
1784         struct wl_pointer *pointer = grab->pointer;
1785         struct shell_surface *priv =
1786                 container_of(grab, struct shell_surface, popup.grab);
1787         struct wl_client *client = priv->surface->surface.resource.client;
1788
1789         if (surface && surface->resource.client == client) {
1790                 wl_pointer_set_focus(pointer, surface, x, y);
1791                 grab->focus = surface;
1792         } else {
1793                 wl_pointer_set_focus(pointer, NULL,
1794                                      wl_fixed_from_int(0),
1795                                      wl_fixed_from_int(0));
1796                 grab->focus = NULL;
1797         }
1798 }
1799
1800 static void
1801 popup_grab_motion(struct wl_pointer_grab *grab,
1802                   uint32_t time, wl_fixed_t sx, wl_fixed_t sy)
1803 {
1804         struct wl_resource *resource;
1805
1806         resource = grab->pointer->focus_resource;
1807         if (resource)
1808                 wl_pointer_send_motion(resource, time, sx, sy);
1809 }
1810
1811 static void
1812 popup_grab_button(struct wl_pointer_grab *grab,
1813                   uint32_t time, uint32_t button, uint32_t state_w)
1814 {
1815         struct wl_resource *resource;
1816         struct shell_surface *shsurf =
1817                 container_of(grab, struct shell_surface, popup.grab);
1818         struct wl_display *display;
1819         enum wl_pointer_button_state state = state_w;
1820         uint32_t serial;
1821
1822         resource = grab->pointer->focus_resource;
1823         if (resource) {
1824                 display = wl_client_get_display(resource->client);
1825                 serial = wl_display_get_serial(display);
1826                 wl_pointer_send_button(resource, serial, time, button, state);
1827         } else if (state == WL_POINTER_BUTTON_STATE_RELEASED &&
1828                    (shsurf->popup.initial_up ||
1829                     time - shsurf->popup.seat->pointer->grab_time > 500)) {
1830                 wl_shell_surface_send_popup_done(&shsurf->resource);
1831                 wl_pointer_end_grab(grab->pointer);
1832                 shsurf->popup.grab.pointer = NULL;
1833         }
1834
1835         if (state == WL_POINTER_BUTTON_STATE_RELEASED)
1836                 shsurf->popup.initial_up = 1;
1837 }
1838
1839 static const struct wl_pointer_grab_interface popup_grab_interface = {
1840         popup_grab_focus,
1841         popup_grab_motion,
1842         popup_grab_button,
1843 };
1844
1845 static void
1846 shell_map_popup(struct shell_surface *shsurf)
1847 {
1848         struct wl_seat *seat = shsurf->popup.seat;
1849         struct weston_surface *es = shsurf->surface;
1850         struct weston_surface *parent = shsurf->parent;
1851
1852         es->output = parent->output;
1853         shsurf->popup.grab.interface = &popup_grab_interface;
1854
1855         weston_surface_update_transform(parent);
1856         if (parent->transform.enabled) {
1857                 shsurf->popup.parent_transform.matrix =
1858                         parent->transform.matrix;
1859         } else {
1860                 /* construct x, y translation matrix */
1861                 weston_matrix_init(&shsurf->popup.parent_transform.matrix);
1862                 shsurf->popup.parent_transform.matrix.d[12] =
1863                         parent->geometry.x;
1864                 shsurf->popup.parent_transform.matrix.d[13] =
1865                         parent->geometry.y;
1866         }
1867         wl_list_insert(es->geometry.transformation_list.prev,
1868                        &shsurf->popup.parent_transform.link);
1869
1870         shsurf->popup.initial_up = 0;
1871         weston_surface_set_position(es, shsurf->popup.x, shsurf->popup.y);
1872         weston_surface_update_transform(es);
1873
1874         /* We don't require the grab to still be active, but if another
1875          * grab has started in the meantime, we end the popup now. */
1876         if (seat->pointer->grab_serial == shsurf->popup.serial) {
1877                 wl_pointer_start_grab(seat->pointer, &shsurf->popup.grab);
1878         } else {
1879                 wl_shell_surface_send_popup_done(&shsurf->resource);
1880         }
1881 }
1882
1883 static void
1884 shell_surface_set_popup(struct wl_client *client,
1885                         struct wl_resource *resource,
1886                         struct wl_resource *seat_resource,
1887                         uint32_t serial,
1888                         struct wl_resource *parent_resource,
1889                         int32_t x, int32_t y, uint32_t flags)
1890 {
1891         struct shell_surface *shsurf = resource->data;
1892
1893         shsurf->type = SHELL_SURFACE_POPUP;
1894         shsurf->parent = parent_resource->data;
1895         shsurf->popup.seat = seat_resource->data;
1896         shsurf->popup.serial = serial;
1897         shsurf->popup.x = x;
1898         shsurf->popup.y = y;
1899 }
1900
1901 static const struct wl_shell_surface_interface shell_surface_implementation = {
1902         shell_surface_pong,
1903         shell_surface_move,
1904         shell_surface_resize,
1905         shell_surface_set_toplevel,
1906         shell_surface_set_transient,
1907         shell_surface_set_fullscreen,
1908         shell_surface_set_popup,
1909         shell_surface_set_maximized,
1910         shell_surface_set_title,
1911         shell_surface_set_class
1912 };
1913
1914 static void
1915 destroy_shell_surface(struct shell_surface *shsurf)
1916 {
1917         if (shsurf->popup.grab.pointer)
1918                 wl_pointer_end_grab(shsurf->popup.grab.pointer);
1919
1920         if (shsurf->fullscreen.type == WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER &&
1921             shell_surface_is_top_fullscreen(shsurf)) {
1922                 weston_output_switch_mode(shsurf->fullscreen_output,
1923                                           shsurf->fullscreen_output->origin);
1924         }
1925
1926         if (shsurf->fullscreen.black_surface)
1927                 weston_surface_destroy(shsurf->fullscreen.black_surface);
1928
1929         /* As destroy_resource() use wl_list_for_each_safe(),
1930          * we can always remove the listener.
1931          */
1932         wl_list_remove(&shsurf->surface_destroy_listener.link);
1933         shsurf->surface->configure = NULL;
1934         ping_timer_destroy(shsurf);
1935
1936         wl_list_remove(&shsurf->link);
1937         free(shsurf);
1938 }
1939
1940 static void
1941 shell_destroy_shell_surface(struct wl_resource *resource)
1942 {
1943         struct shell_surface *shsurf = resource->data;
1944
1945         destroy_shell_surface(shsurf);
1946 }
1947
1948 static void
1949 shell_handle_surface_destroy(struct wl_listener *listener, void *data)
1950 {
1951         struct shell_surface *shsurf = container_of(listener,
1952                                                     struct shell_surface,
1953                                                     surface_destroy_listener);
1954
1955         if (shsurf->resource.client) {
1956                 wl_resource_destroy(&shsurf->resource);
1957         } else {
1958                 wl_signal_emit(&shsurf->resource.destroy_signal,
1959                                &shsurf->resource);
1960                 destroy_shell_surface(shsurf);
1961         }
1962 }
1963
1964 static void
1965 shell_surface_configure(struct weston_surface *, int32_t, int32_t);
1966
1967 static struct shell_surface *
1968 get_shell_surface(struct weston_surface *surface)
1969 {
1970         if (surface->configure == shell_surface_configure)
1971                 return surface->private;
1972         else
1973                 return NULL;
1974 }
1975
1976 static  struct shell_surface *
1977 create_shell_surface(void *shell, struct weston_surface *surface,
1978                      const struct weston_shell_client *client)
1979 {
1980         struct shell_surface *shsurf;
1981
1982         if (surface->configure) {
1983                 weston_log("surface->configure already set\n");
1984                 return NULL;
1985         }
1986
1987         shsurf = calloc(1, sizeof *shsurf);
1988         if (!shsurf) {
1989                 weston_log("no memory to allocate shell surface\n");
1990                 return NULL;
1991         }
1992
1993         surface->configure = shell_surface_configure;
1994         surface->private = shsurf;
1995
1996         shsurf->shell = (struct desktop_shell *) shell;
1997         shsurf->unresponsive = 0;
1998         shsurf->saved_position_valid = false;
1999         shsurf->saved_rotation_valid = false;
2000         shsurf->surface = surface;
2001         shsurf->fullscreen.type = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
2002         shsurf->fullscreen.framerate = 0;
2003         shsurf->fullscreen.black_surface = NULL;
2004         shsurf->ping_timer = NULL;
2005         wl_list_init(&shsurf->fullscreen.transform.link);
2006
2007         wl_signal_init(&shsurf->resource.destroy_signal);
2008         shsurf->surface_destroy_listener.notify = shell_handle_surface_destroy;
2009         wl_signal_add(&surface->surface.resource.destroy_signal,
2010                       &shsurf->surface_destroy_listener);
2011
2012         /* init link so its safe to always remove it in destroy_shell_surface */
2013         wl_list_init(&shsurf->link);
2014
2015         /* empty when not in use */
2016         wl_list_init(&shsurf->rotation.transform.link);
2017         weston_matrix_init(&shsurf->rotation.rotation);
2018
2019         wl_list_init(&shsurf->workspace_transform.link);
2020
2021         shsurf->type = SHELL_SURFACE_NONE;
2022         shsurf->next_type = SHELL_SURFACE_NONE;
2023
2024         shsurf->client = client;
2025
2026         return shsurf;
2027 }
2028
2029 static void
2030 shell_get_shell_surface(struct wl_client *client,
2031                         struct wl_resource *resource,
2032                         uint32_t id,
2033                         struct wl_resource *surface_resource)
2034 {
2035         struct weston_surface *surface = surface_resource->data;
2036         struct desktop_shell *shell = resource->data;
2037         struct shell_surface *shsurf;
2038
2039         if (get_shell_surface(surface)) {
2040                 wl_resource_post_error(surface_resource,
2041                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2042                                        "desktop_shell::get_shell_surface already requested");
2043                 return;
2044         }
2045
2046         shsurf = create_shell_surface(shell, surface, &shell_client);
2047         if (!shsurf) {
2048                 wl_resource_post_error(surface_resource,
2049                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2050                                        "surface->configure already set");
2051                 return;
2052         }
2053
2054         shsurf->resource.destroy = shell_destroy_shell_surface;
2055         shsurf->resource.object.id = id;
2056         shsurf->resource.object.interface = &wl_shell_surface_interface;
2057         shsurf->resource.object.implementation =
2058                 (void (**)(void)) &shell_surface_implementation;
2059         shsurf->resource.data = shsurf;
2060
2061         wl_client_add_resource(client, &shsurf->resource);
2062 }
2063
2064 static const struct wl_shell_interface shell_implementation = {
2065         shell_get_shell_surface
2066 };
2067
2068 static void
2069 handle_screensaver_sigchld(struct weston_process *proc, int status)
2070 {
2071         proc->pid = 0;
2072 }
2073
2074 static void
2075 launch_screensaver(struct desktop_shell *shell)
2076 {
2077         if (shell->screensaver.binding)
2078                 return;
2079
2080         if (!shell->screensaver.path)
2081                 return;
2082
2083         if (shell->screensaver.process.pid != 0) {
2084                 weston_log("old screensaver still running\n");
2085                 return;
2086         }
2087
2088         weston_client_launch(shell->compositor,
2089                            &shell->screensaver.process,
2090                            shell->screensaver.path,
2091                            handle_screensaver_sigchld);
2092 }
2093
2094 static void
2095 terminate_screensaver(struct desktop_shell *shell)
2096 {
2097         if (shell->screensaver.process.pid == 0)
2098                 return;
2099
2100         kill(shell->screensaver.process.pid, SIGTERM);
2101 }
2102
2103 static void
2104 configure_static_surface(struct weston_surface *es, struct weston_layer *layer)
2105 {
2106         struct weston_surface *s, *next;
2107
2108         wl_list_for_each_safe(s, next, &layer->surface_list, layer_link) {
2109                 if (s->output == es->output && s != es) {
2110                         weston_surface_unmap(s);
2111                         s->configure = NULL;
2112                 }
2113         }
2114
2115         weston_surface_configure(es, es->output->x, es->output->y,
2116                                  es->buffer->width, es->buffer->height);
2117
2118         if (wl_list_empty(&es->layer_link)) {
2119                 wl_list_insert(&layer->surface_list, &es->layer_link);
2120                 weston_compositor_schedule_repaint(es->compositor);
2121         }
2122 }
2123
2124 static void
2125 background_configure(struct weston_surface *es, int32_t sx, int32_t sy)
2126 {
2127         struct desktop_shell *shell = es->private;
2128
2129         configure_static_surface(es, &shell->background_layer);
2130 }
2131
2132 static void
2133 desktop_shell_set_background(struct wl_client *client,
2134                              struct wl_resource *resource,
2135                              struct wl_resource *output_resource,
2136                              struct wl_resource *surface_resource)
2137 {
2138         struct desktop_shell *shell = resource->data;
2139         struct weston_surface *surface = surface_resource->data;
2140
2141         if (surface->configure) {
2142                 wl_resource_post_error(surface_resource,
2143                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2144                                        "surface role already assigned");
2145                 return;
2146         }
2147
2148         surface->configure = background_configure;
2149         surface->private = shell;
2150         surface->output = output_resource->data;
2151         desktop_shell_send_configure(resource, 0,
2152                                      surface_resource,
2153                                      surface->output->width,
2154                                      surface->output->height);
2155 }
2156
2157 static void
2158 panel_configure(struct weston_surface *es, int32_t sx, int32_t sy)
2159 {
2160         struct desktop_shell *shell = es->private;
2161
2162         configure_static_surface(es, &shell->panel_layer);
2163 }
2164
2165 static void
2166 desktop_shell_set_panel(struct wl_client *client,
2167                         struct wl_resource *resource,
2168                         struct wl_resource *output_resource,
2169                         struct wl_resource *surface_resource)
2170 {
2171         struct desktop_shell *shell = resource->data;
2172         struct weston_surface *surface = surface_resource->data;
2173
2174         if (surface->configure) {
2175                 wl_resource_post_error(surface_resource,
2176                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2177                                        "surface role already assigned");
2178                 return;
2179         }
2180
2181         surface->configure = panel_configure;
2182         surface->private = shell;
2183         surface->output = output_resource->data;
2184         desktop_shell_send_configure(resource, 0,
2185                                      surface_resource,
2186                                      surface->output->width,
2187                                      surface->output->height);
2188 }
2189
2190 static void
2191 lock_surface_configure(struct weston_surface *surface, int32_t sx, int32_t sy)
2192 {
2193         struct desktop_shell *shell = surface->private;
2194
2195         center_on_output(surface, get_default_output(shell->compositor));
2196
2197         if (!weston_surface_is_mapped(surface)) {
2198                 wl_list_insert(&shell->lock_layer.surface_list,
2199                                &surface->layer_link);
2200                 weston_surface_update_transform(surface);
2201                 weston_compositor_wake(shell->compositor);
2202         }
2203 }
2204
2205 static void
2206 handle_lock_surface_destroy(struct wl_listener *listener, void *data)
2207 {
2208         struct desktop_shell *shell =
2209             container_of(listener, struct desktop_shell, lock_surface_listener);
2210
2211         weston_log("lock surface gone\n");
2212         shell->lock_surface = NULL;
2213 }
2214
2215 static void
2216 desktop_shell_set_lock_surface(struct wl_client *client,
2217                                struct wl_resource *resource,
2218                                struct wl_resource *surface_resource)
2219 {
2220         struct desktop_shell *shell = resource->data;
2221         struct weston_surface *surface = surface_resource->data;
2222
2223         shell->prepare_event_sent = false;
2224
2225         if (!shell->locked)
2226                 return;
2227
2228         shell->lock_surface = surface;
2229
2230         shell->lock_surface_listener.notify = handle_lock_surface_destroy;
2231         wl_signal_add(&surface_resource->destroy_signal,
2232                       &shell->lock_surface_listener);
2233
2234         surface->configure = lock_surface_configure;
2235         surface->private = shell;
2236 }
2237
2238 static void
2239 resume_desktop(struct desktop_shell *shell)
2240 {
2241         struct weston_surface *surface;
2242         struct workspace *ws = get_current_workspace(shell);
2243
2244         wl_list_for_each(surface, &shell->screensaver.surfaces, link)
2245                 weston_surface_unmap(surface);
2246
2247         terminate_screensaver(shell);
2248
2249         wl_list_remove(&shell->lock_layer.link);
2250         wl_list_insert(&shell->compositor->cursor_layer.link,
2251                        &shell->fullscreen_layer.link);
2252         wl_list_insert(&shell->fullscreen_layer.link,
2253                        &shell->panel_layer.link);
2254         if (shell->showing_input_panels) {
2255                 wl_list_insert(&shell->panel_layer.link,
2256                                &shell->input_panel_layer.link);
2257                 wl_list_insert(&shell->input_panel_layer.link,
2258                                &ws->layer.link);
2259         } else {
2260                 wl_list_insert(&shell->panel_layer.link, &ws->layer.link);
2261         }
2262
2263         restore_focus_state(shell, get_current_workspace(shell));
2264
2265         shell->locked = false;
2266         shell->compositor->idle_time = shell->compositor->option_idle_time;
2267         weston_compositor_wake(shell->compositor);
2268         weston_compositor_damage_all(shell->compositor);
2269 }
2270
2271 static void
2272 desktop_shell_unlock(struct wl_client *client,
2273                      struct wl_resource *resource)
2274 {
2275         struct desktop_shell *shell = resource->data;
2276
2277         shell->prepare_event_sent = false;
2278
2279         if (shell->locked)
2280                 resume_desktop(shell);
2281 }
2282
2283 static void
2284 desktop_shell_set_grab_surface(struct wl_client *client,
2285                                struct wl_resource *resource,
2286                                struct wl_resource *surface_resource)
2287 {
2288         struct desktop_shell *shell = resource->data;
2289
2290         shell->grab_surface = surface_resource->data;
2291 }
2292
2293 static const struct desktop_shell_interface desktop_shell_implementation = {
2294         desktop_shell_set_background,
2295         desktop_shell_set_panel,
2296         desktop_shell_set_lock_surface,
2297         desktop_shell_unlock,
2298         desktop_shell_set_grab_surface
2299 };
2300
2301 static enum shell_surface_type
2302 get_shell_surface_type(struct weston_surface *surface)
2303 {
2304         struct shell_surface *shsurf;
2305
2306         shsurf = get_shell_surface(surface);
2307         if (!shsurf)
2308                 return SHELL_SURFACE_NONE;
2309         return shsurf->type;
2310 }
2311
2312 static void
2313 move_binding(struct wl_seat *seat, uint32_t time, uint32_t button, void *data)
2314 {
2315         struct weston_surface *surface =
2316                 (struct weston_surface *) seat->pointer->focus;
2317         struct shell_surface *shsurf;
2318
2319         if (surface == NULL)
2320                 return;
2321
2322         shsurf = get_shell_surface(surface);
2323         if (shsurf == NULL || shsurf->type == SHELL_SURFACE_FULLSCREEN)
2324                 return;
2325
2326         surface_move(shsurf, (struct weston_seat *) seat);
2327 }
2328
2329 static void
2330 resize_binding(struct wl_seat *seat, uint32_t time, uint32_t button, void *data)
2331 {
2332         struct weston_surface *surface =
2333                 (struct weston_surface *) seat->pointer->focus;
2334         uint32_t edges = 0;
2335         int32_t x, y;
2336         struct shell_surface *shsurf;
2337
2338         if (surface == NULL)
2339                 return;
2340
2341         shsurf = get_shell_surface(surface);
2342         if (!shsurf || shsurf->type == SHELL_SURFACE_FULLSCREEN)
2343                 return;
2344
2345         weston_surface_from_global(surface,
2346                                    wl_fixed_to_int(seat->pointer->grab_x),
2347                                    wl_fixed_to_int(seat->pointer->grab_y),
2348                                    &x, &y);
2349
2350         if (x < surface->geometry.width / 3)
2351                 edges |= WL_SHELL_SURFACE_RESIZE_LEFT;
2352         else if (x < 2 * surface->geometry.width / 3)
2353                 edges |= 0;
2354         else
2355                 edges |= WL_SHELL_SURFACE_RESIZE_RIGHT;
2356
2357         if (y < surface->geometry.height / 3)
2358                 edges |= WL_SHELL_SURFACE_RESIZE_TOP;
2359         else if (y < 2 * surface->geometry.height / 3)
2360                 edges |= 0;
2361         else
2362                 edges |= WL_SHELL_SURFACE_RESIZE_BOTTOM;
2363
2364         surface_resize(shsurf, (struct weston_seat *) seat, edges);
2365 }
2366
2367 static void
2368 surface_opacity_binding(struct wl_seat *seat, uint32_t time, uint32_t axis,
2369                         wl_fixed_t value, void *data)
2370 {
2371         float step = 0.005;
2372         struct shell_surface *shsurf;
2373         struct weston_surface *surface =
2374                 (struct weston_surface *) seat->pointer->focus;
2375
2376         if (surface == NULL)
2377                 return;
2378
2379         shsurf = get_shell_surface(surface);
2380         if (!shsurf)
2381                 return;
2382
2383         surface->alpha -= wl_fixed_to_double(value) * step;
2384
2385         if (surface->alpha > 1.0)
2386                 surface->alpha = 1.0;
2387         if (surface->alpha < step)
2388                 surface->alpha = step;
2389
2390         surface->geometry.dirty = 1;
2391         weston_surface_damage(surface);
2392 }
2393
2394 static void
2395 do_zoom(struct wl_seat *seat, uint32_t time, uint32_t key, uint32_t axis,
2396         wl_fixed_t value)
2397 {
2398         struct weston_seat *ws = (struct weston_seat *) seat;
2399         struct weston_compositor *compositor = ws->compositor;
2400         struct weston_output *output;
2401         float increment;
2402
2403         wl_list_for_each(output, &compositor->output_list, link) {
2404                 if (pixman_region32_contains_point(&output->region,
2405                                                    wl_fixed_to_double(seat->pointer->x),
2406                                                    wl_fixed_to_double(seat->pointer->y),
2407                                                    NULL)) {
2408                         if (key == KEY_PAGEUP)
2409                                 increment = output->zoom.increment;
2410                         else if (key == KEY_PAGEDOWN)
2411                                 increment = -output->zoom.increment;
2412                         else if (axis == WL_POINTER_AXIS_VERTICAL_SCROLL)
2413                                 /* For every pixel zoom 20th of a step */
2414                                 increment = output->zoom.increment *
2415                                             -wl_fixed_to_double(value) / 20.0;
2416                         else
2417                                 increment = 0;
2418
2419                         output->zoom.level += increment;
2420
2421                         if (output->zoom.level < 0.0)
2422                                 output->zoom.level = 0.0;
2423                         else if (output->zoom.level > output->zoom.max_level)
2424                                 output->zoom.level = output->zoom.max_level;
2425                         else {
2426                                 output->zoom.active = 1;
2427                                 output->disable_planes++;
2428                         }
2429
2430                         output->zoom.spring_z.target = output->zoom.level;
2431
2432                         weston_output_update_zoom(output, output->zoom.type);
2433                 }
2434         }
2435 }
2436
2437 static void
2438 zoom_axis_binding(struct wl_seat *seat, uint32_t time, uint32_t axis,
2439                   wl_fixed_t value, void *data)
2440 {
2441         do_zoom(seat, time, 0, axis, value);
2442 }
2443
2444 static void
2445 zoom_key_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
2446                  void *data)
2447 {
2448         do_zoom(seat, time, key, 0, 0);
2449 }
2450
2451 static void
2452 terminate_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
2453                   void *data)
2454 {
2455         struct weston_compositor *compositor = data;
2456
2457         wl_display_terminate(compositor->wl_display);
2458 }
2459
2460 static void
2461 rotate_grab_motion(struct wl_pointer_grab *grab,
2462                    uint32_t time, wl_fixed_t x, wl_fixed_t y)
2463 {
2464         struct rotate_grab *rotate =
2465                 container_of(grab, struct rotate_grab, base.grab);
2466         struct wl_pointer *pointer = grab->pointer;
2467         struct shell_surface *shsurf = rotate->base.shsurf;
2468         struct weston_surface *surface;
2469         float cx, cy, dx, dy, cposx, cposy, dposx, dposy, r;
2470
2471         if (!shsurf)
2472                 return;
2473
2474         surface = shsurf->surface;
2475
2476         cx = 0.5f * surface->geometry.width;
2477         cy = 0.5f * surface->geometry.height;
2478
2479         dx = wl_fixed_to_double(pointer->x) - rotate->center.x;
2480         dy = wl_fixed_to_double(pointer->y) - rotate->center.y;
2481         r = sqrtf(dx * dx + dy * dy);
2482
2483         wl_list_remove(&shsurf->rotation.transform.link);
2484         shsurf->surface->geometry.dirty = 1;
2485
2486         if (r > 20.0f) {
2487                 struct weston_matrix *matrix =
2488                         &shsurf->rotation.transform.matrix;
2489
2490                 weston_matrix_init(&rotate->rotation);
2491                 rotate->rotation.d[0] = dx / r;
2492                 rotate->rotation.d[4] = -dy / r;
2493                 rotate->rotation.d[1] = -rotate->rotation.d[4];
2494                 rotate->rotation.d[5] = rotate->rotation.d[0];
2495
2496                 weston_matrix_init(matrix);
2497                 weston_matrix_translate(matrix, -cx, -cy, 0.0f);
2498                 weston_matrix_multiply(matrix, &shsurf->rotation.rotation);
2499                 weston_matrix_multiply(matrix, &rotate->rotation);
2500                 weston_matrix_translate(matrix, cx, cy, 0.0f);
2501
2502                 wl_list_insert(
2503                         &shsurf->surface->geometry.transformation_list,
2504                         &shsurf->rotation.transform.link);
2505         } else {
2506                 wl_list_init(&shsurf->rotation.transform.link);
2507                 weston_matrix_init(&shsurf->rotation.rotation);
2508                 weston_matrix_init(&rotate->rotation);
2509         }
2510
2511         /* We need to adjust the position of the surface
2512          * in case it was resized in a rotated state before */
2513         cposx = surface->geometry.x + cx;
2514         cposy = surface->geometry.y + cy;
2515         dposx = rotate->center.x - cposx;
2516         dposy = rotate->center.y - cposy;
2517         if (dposx != 0.0f || dposy != 0.0f) {
2518                 weston_surface_set_position(surface,
2519                                             surface->geometry.x + dposx,
2520                                             surface->geometry.y + dposy);
2521         }
2522
2523         /* Repaint implies weston_surface_update_transform(), which
2524          * lazily applies the damage due to rotation update.
2525          */
2526         weston_compositor_schedule_repaint(shsurf->surface->compositor);
2527 }
2528
2529 static void
2530 rotate_grab_button(struct wl_pointer_grab *grab,
2531                  uint32_t time, uint32_t button, uint32_t state_w)
2532 {
2533         struct rotate_grab *rotate =
2534                 container_of(grab, struct rotate_grab, base.grab);
2535         struct wl_pointer *pointer = grab->pointer;
2536         struct shell_surface *shsurf = rotate->base.shsurf;
2537         enum wl_pointer_button_state state = state_w;
2538
2539         if (pointer->button_count == 0 &&
2540             state == WL_POINTER_BUTTON_STATE_RELEASED) {
2541                 if (shsurf)
2542                         weston_matrix_multiply(&shsurf->rotation.rotation,
2543                                                &rotate->rotation);
2544                 shell_grab_end(&rotate->base);
2545                 free(rotate);
2546         }
2547 }
2548
2549 static const struct wl_pointer_grab_interface rotate_grab_interface = {
2550         noop_grab_focus,
2551         rotate_grab_motion,
2552         rotate_grab_button,
2553 };
2554
2555 static void
2556 rotate_binding(struct wl_seat *seat, uint32_t time, uint32_t button,
2557                void *data)
2558 {
2559         struct weston_surface *base_surface =
2560                 (struct weston_surface *) seat->pointer->focus;
2561         struct shell_surface *surface;
2562         struct rotate_grab *rotate;
2563         float dx, dy;
2564         float r;
2565
2566         if (base_surface == NULL)
2567                 return;
2568
2569         surface = get_shell_surface(base_surface);
2570         if (!surface || surface->type == SHELL_SURFACE_FULLSCREEN)
2571                 return;
2572
2573         rotate = malloc(sizeof *rotate);
2574         if (!rotate)
2575                 return;
2576
2577         weston_surface_to_global_float(surface->surface,
2578                                        surface->surface->geometry.width / 2,
2579                                        surface->surface->geometry.height / 2,
2580                                        &rotate->center.x, &rotate->center.y);
2581
2582         dx = wl_fixed_to_double(seat->pointer->x) - rotate->center.x;
2583         dy = wl_fixed_to_double(seat->pointer->y) - rotate->center.y;
2584         r = sqrtf(dx * dx + dy * dy);
2585         if (r > 20.0f) {
2586                 struct weston_matrix inverse;
2587
2588                 weston_matrix_init(&inverse);
2589                 inverse.d[0] = dx / r;
2590                 inverse.d[4] = dy / r;
2591                 inverse.d[1] = -inverse.d[4];
2592                 inverse.d[5] = inverse.d[0];
2593                 weston_matrix_multiply(&surface->rotation.rotation, &inverse);
2594
2595                 weston_matrix_init(&rotate->rotation);
2596                 rotate->rotation.d[0] = dx / r;
2597                 rotate->rotation.d[4] = -dy / r;
2598                 rotate->rotation.d[1] = -rotate->rotation.d[4];
2599                 rotate->rotation.d[5] = rotate->rotation.d[0];
2600         } else {
2601                 weston_matrix_init(&surface->rotation.rotation);
2602                 weston_matrix_init(&rotate->rotation);
2603         }
2604
2605         shell_grab_start(&rotate->base, &rotate_grab_interface, surface,
2606                          seat->pointer, DESKTOP_SHELL_CURSOR_ARROW);
2607 }
2608
2609 static void
2610 lower_fullscreen_layer(struct desktop_shell *shell)
2611 {
2612         struct workspace *ws;
2613         struct weston_surface *surface, *prev;
2614
2615         ws = get_current_workspace(shell);
2616         wl_list_for_each_reverse_safe(surface, prev,
2617                                       &shell->fullscreen_layer.surface_list,
2618                                       layer_link)
2619                 weston_surface_restack(surface, &ws->layer.surface_list);
2620 }
2621
2622 static void
2623 activate(struct desktop_shell *shell, struct weston_surface *es,
2624          struct weston_seat *seat)
2625 {
2626         struct focus_state *state;
2627         struct workspace *ws;
2628
2629         weston_surface_activate(es, seat);
2630
2631         state = ensure_focus_state(shell, seat);
2632         if (state == NULL)
2633                 return;
2634
2635         state->keyboard_focus = es;
2636         wl_list_remove(&state->surface_destroy_listener.link);
2637         wl_signal_add(&es->surface.resource.destroy_signal,
2638                       &state->surface_destroy_listener);
2639
2640         switch (get_shell_surface_type(es)) {
2641         case SHELL_SURFACE_FULLSCREEN:
2642                 /* should on top of panels */
2643                 shell_stack_fullscreen(get_shell_surface(es));
2644                 shell_configure_fullscreen(get_shell_surface(es));
2645                 break;
2646         default:
2647                 ws = get_current_workspace(shell);
2648                 lower_fullscreen_layer(shell);
2649                 weston_surface_restack(es, &ws->layer.surface_list);
2650                 break;
2651         }
2652 }
2653
2654 /* no-op func for checking black surface */
2655 static void
2656 black_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy)
2657 {
2658 }
2659
2660 static bool
2661 is_black_surface (struct weston_surface *es, struct weston_surface **fs_surface)
2662 {
2663         if (es->configure == black_surface_configure) {
2664                 if (fs_surface)
2665                         *fs_surface = (struct weston_surface *)es->private;
2666                 return true;
2667         }
2668         return false;
2669 }
2670
2671 static void
2672 click_to_activate_binding(struct wl_seat *seat, uint32_t time, uint32_t button,
2673                           void *data)
2674 {
2675         struct weston_seat *ws = (struct weston_seat *) seat;
2676         struct desktop_shell *shell = data;
2677         struct weston_surface *focus;
2678         struct weston_surface *upper;
2679
2680         focus = (struct weston_surface *) seat->pointer->focus;
2681         if (!focus)
2682                 return;
2683
2684         if (is_black_surface(focus, &upper))
2685                 focus = upper;
2686
2687         if (get_shell_surface_type(focus) == SHELL_SURFACE_NONE)
2688                 return;
2689
2690         if (seat->pointer->grab == &seat->pointer->default_grab)
2691                 activate(shell, focus, ws);
2692 }
2693
2694 static void
2695 lock(struct wl_listener *listener, void *data)
2696 {
2697         struct desktop_shell *shell =
2698                 container_of(listener, struct desktop_shell, lock_listener);
2699         struct weston_output *output;
2700         struct workspace *ws = get_current_workspace(shell);
2701
2702         if (shell->locked) {
2703                 wl_list_for_each(output, &shell->compositor->output_list, link)
2704                         /* TODO: find a way to jump to other DPMS levels */
2705                         if (output->set_dpms)
2706                                 output->set_dpms(output, WESTON_DPMS_STANDBY);
2707                 return;
2708         }
2709
2710         shell->locked = true;
2711
2712         /* Hide all surfaces by removing the fullscreen, panel and
2713          * toplevel layers.  This way nothing else can show or receive
2714          * input events while we are locked. */
2715
2716         wl_list_remove(&shell->panel_layer.link);
2717         wl_list_remove(&shell->fullscreen_layer.link);
2718         if (shell->showing_input_panels)
2719                 wl_list_remove(&shell->input_panel_layer.link);
2720         wl_list_remove(&ws->layer.link);
2721         wl_list_insert(&shell->compositor->cursor_layer.link,
2722                        &shell->lock_layer.link);
2723
2724         launch_screensaver(shell);
2725
2726         /* TODO: disable bindings that should not work while locked. */
2727
2728         /* All this must be undone in resume_desktop(). */
2729 }
2730
2731 static void
2732 unlock(struct wl_listener *listener, void *data)
2733 {
2734         struct desktop_shell *shell =
2735                 container_of(listener, struct desktop_shell, unlock_listener);
2736
2737         if (!shell->locked || shell->lock_surface) {
2738                 weston_compositor_wake(shell->compositor);
2739                 return;
2740         }
2741
2742         /* If desktop-shell client has gone away, unlock immediately. */
2743         if (!shell->child.desktop_shell) {
2744                 resume_desktop(shell);
2745                 return;
2746         }
2747
2748         if (shell->prepare_event_sent)
2749                 return;
2750
2751         desktop_shell_send_prepare_lock_surface(shell->child.desktop_shell);
2752         shell->prepare_event_sent = true;
2753 }
2754
2755 static void
2756 show_input_panels(struct wl_listener *listener, void *data)
2757 {
2758         struct desktop_shell *shell =
2759                 container_of(listener, struct desktop_shell,
2760                              show_input_panel_listener);
2761         struct input_panel_surface *surface, *next;
2762         struct weston_surface *ws;
2763
2764         shell->showing_input_panels = true;
2765
2766         wl_list_insert(&shell->panel_layer.link,
2767                        &shell->input_panel_layer.link);
2768
2769         wl_list_for_each_safe(surface, next,
2770                               &shell->input_panel.surfaces, link) {
2771                 ws = surface->surface;
2772                 wl_list_insert(&shell->input_panel_layer.surface_list,
2773                                &ws->layer_link);
2774                 ws->geometry.dirty = 1;
2775                 weston_surface_update_transform(ws);
2776                 weston_surface_damage(ws);
2777                 weston_slide_run(ws, ws->geometry.height, 0, NULL, NULL);
2778         }
2779 }
2780
2781 static void
2782 hide_input_panels(struct wl_listener *listener, void *data)
2783 {
2784         struct desktop_shell *shell =
2785                 container_of(listener, struct desktop_shell,
2786                              hide_input_panel_listener);
2787         struct weston_surface *surface, *next;
2788
2789         shell->showing_input_panels = false;
2790
2791         wl_list_remove(&shell->input_panel_layer.link);
2792
2793         wl_list_for_each_safe(surface, next,
2794                               &shell->input_panel_layer.surface_list, layer_link)
2795                 weston_surface_unmap(surface);
2796 }
2797
2798 static void
2799 center_on_output(struct weston_surface *surface, struct weston_output *output)
2800 {
2801         float x = (output->width - surface->buffer->width) / 2;
2802         float y = (output->height - surface->buffer->height) / 2;
2803
2804         weston_surface_configure(surface, output->x + x, output->y + y,
2805                                  surface->buffer->width,
2806                                  surface->buffer->height);
2807 }
2808
2809 static void
2810 weston_surface_set_initial_position (struct weston_surface *surface,
2811                                      struct desktop_shell *shell)
2812 {
2813         struct weston_compositor *compositor = shell->compositor;
2814         int ix = 0, iy = 0;
2815         int range_x, range_y;
2816         int dx, dy, x, y, panel_height;
2817         struct weston_output *output, *target_output = NULL;
2818         struct weston_seat *seat;
2819
2820         /* As a heuristic place the new window on the same output as the
2821          * pointer. Falling back to the output containing 0, 0.
2822          *
2823          * TODO: Do something clever for touch too?
2824          */
2825         wl_list_for_each(seat, &compositor->seat_list, link) {
2826                 if (seat->has_pointer) {
2827                         ix = wl_fixed_to_int(seat->pointer.x);
2828                         iy = wl_fixed_to_int(seat->pointer.y);
2829                         break;
2830                 }
2831         }
2832
2833         wl_list_for_each(output, &compositor->output_list, link) {
2834                 if (pixman_region32_contains_point(&output->region, ix, iy, NULL)) {
2835                         target_output = output;
2836                         break;
2837                 }
2838         }
2839
2840         if (!target_output) {
2841                 weston_surface_set_position(surface, 10 + random() % 400,
2842                                            10 + random() % 400);
2843                 return;
2844         }
2845
2846         /* Valid range within output where the surface will still be onscreen.
2847          * If this is negative it means that the surface is bigger than
2848          * output.
2849          */
2850         panel_height = get_output_panel_height(shell, target_output);
2851         range_x = target_output->width - surface->geometry.width;
2852         range_y = (target_output->height - panel_height) -
2853                   surface->geometry.height;
2854
2855         if (range_x > 0)
2856                 dx = random() % range_x;
2857         else
2858                 dx = 0;
2859
2860         if (range_y > 0)
2861                 dy = panel_height + random() % range_y;
2862         else
2863                 dy = panel_height;
2864
2865         x = target_output->x + dx;
2866         y = target_output->y + dy;
2867
2868         weston_surface_set_position (surface, x, y);
2869 }
2870
2871 static void
2872 map(struct desktop_shell *shell, struct weston_surface *surface,
2873     int32_t width, int32_t height, int32_t sx, int32_t sy)
2874 {
2875         struct weston_compositor *compositor = shell->compositor;
2876         struct shell_surface *shsurf = get_shell_surface(surface);
2877         enum shell_surface_type surface_type = shsurf->type;
2878         struct weston_surface *parent;
2879         struct weston_seat *seat;
2880         struct workspace *ws;
2881         int panel_height = 0;
2882
2883         surface->geometry.width = width;
2884         surface->geometry.height = height;
2885         surface->geometry.dirty = 1;
2886
2887         /* initial positioning, see also configure() */
2888         switch (surface_type) {
2889         case SHELL_SURFACE_TOPLEVEL:
2890                 weston_surface_set_initial_position(surface, shell);
2891                 break;
2892         case SHELL_SURFACE_FULLSCREEN:
2893                 center_on_output(surface, shsurf->fullscreen_output);
2894                 shell_map_fullscreen(shsurf);
2895                 break;
2896         case SHELL_SURFACE_MAXIMIZED:
2897                 /* use surface configure to set the geometry */
2898                 panel_height = get_output_panel_height(shell,surface->output);
2899                 weston_surface_set_position(surface, shsurf->output->x,
2900                                             shsurf->output->y + panel_height);
2901                 break;
2902         case SHELL_SURFACE_POPUP:
2903                 shell_map_popup(shsurf);
2904         case SHELL_SURFACE_NONE:
2905                 weston_surface_set_position(surface,
2906                                             surface->geometry.x + sx,
2907                                             surface->geometry.y + sy);
2908                 break;
2909         default:
2910                 ;
2911         }
2912
2913         /* surface stacking order, see also activate() */
2914         switch (surface_type) {
2915         case SHELL_SURFACE_POPUP:
2916         case SHELL_SURFACE_TRANSIENT:
2917                 parent = shsurf->parent;
2918                 wl_list_insert(parent->layer_link.prev, &surface->layer_link);
2919                 break;
2920         case SHELL_SURFACE_FULLSCREEN:
2921         case SHELL_SURFACE_NONE:
2922                 break;
2923         default:
2924                 ws = get_current_workspace(shell);
2925                 wl_list_insert(&ws->layer.surface_list, &surface->layer_link);
2926                 break;
2927         }
2928
2929         if (surface_type != SHELL_SURFACE_NONE) {
2930                 weston_surface_update_transform(surface);
2931                 if (surface_type == SHELL_SURFACE_MAXIMIZED)
2932                         surface->output = shsurf->output;
2933         }
2934
2935         switch (surface_type) {
2936         case SHELL_SURFACE_TRANSIENT:
2937                 if (shsurf->transient.flags ==
2938                                 WL_SHELL_SURFACE_TRANSIENT_INACTIVE)
2939                         break;
2940         case SHELL_SURFACE_TOPLEVEL:
2941         case SHELL_SURFACE_FULLSCREEN:
2942         case SHELL_SURFACE_MAXIMIZED:
2943                 if (!shell->locked) {
2944                         wl_list_for_each(seat, &compositor->seat_list, link)
2945                                 activate(shell, surface, seat);
2946                 }
2947                 break;
2948         default:
2949                 break;
2950         }
2951
2952         if (surface_type == SHELL_SURFACE_TOPLEVEL)
2953         {
2954                 switch (shell->win_animation_type) {
2955                 case ANIMATION_FADE:
2956                         weston_fade_run(surface, NULL, NULL);
2957                         break;
2958                 case ANIMATION_ZOOM:
2959                         weston_zoom_run(surface, 0.8, 1.0, NULL, NULL);
2960                         break;
2961                 default:
2962                         break;
2963                 }
2964         }
2965 }
2966
2967 static void
2968 configure(struct desktop_shell *shell, struct weston_surface *surface,
2969           float x, float y, int32_t width, int32_t height)
2970 {
2971         enum shell_surface_type surface_type = SHELL_SURFACE_NONE;
2972         struct shell_surface *shsurf;
2973
2974         shsurf = get_shell_surface(surface);
2975         if (shsurf)
2976                 surface_type = shsurf->type;
2977
2978         surface->geometry.x = x;
2979         surface->geometry.y = y;
2980         surface->geometry.width = width;
2981         surface->geometry.height = height;
2982         surface->geometry.dirty = 1;
2983
2984         switch (surface_type) {
2985         case SHELL_SURFACE_FULLSCREEN:
2986                 shell_stack_fullscreen(shsurf);
2987                 shell_configure_fullscreen(shsurf);
2988                 break;
2989         case SHELL_SURFACE_MAXIMIZED:
2990                 /* setting x, y and using configure to change that geometry */
2991                 surface->geometry.x = surface->output->x;
2992                 surface->geometry.y = surface->output->y +
2993                         get_output_panel_height(shell,surface->output);
2994                 break;
2995         case SHELL_SURFACE_TOPLEVEL:
2996                 break;
2997         default:
2998                 break;
2999         }
3000
3001         /* XXX: would a fullscreen surface need the same handling? */
3002         if (surface->output) {
3003                 weston_surface_update_transform(surface);
3004
3005                 if (surface_type == SHELL_SURFACE_MAXIMIZED)
3006                         surface->output = shsurf->output;
3007         }
3008 }
3009
3010 static void
3011 shell_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy)
3012 {
3013         struct shell_surface *shsurf = get_shell_surface(es);
3014         struct desktop_shell *shell = shsurf->shell;
3015         int type_changed = 0;
3016
3017         if (shsurf->next_type != SHELL_SURFACE_NONE &&
3018             shsurf->type != shsurf->next_type) {
3019                 set_surface_type(shsurf);
3020                 type_changed = 1;
3021         }
3022
3023         if (!weston_surface_is_mapped(es)) {
3024                 map(shell, es, es->buffer->width, es->buffer->height, sx, sy);
3025         } else if (type_changed || sx != 0 || sy != 0 ||
3026                    es->geometry.width != es->buffer->width ||
3027                    es->geometry.height != es->buffer->height) {
3028                 float from_x, from_y;
3029                 float to_x, to_y;
3030
3031                 weston_surface_to_global_float(es, 0, 0, &from_x, &from_y);
3032                 weston_surface_to_global_float(es, sx, sy, &to_x, &to_y);
3033                 configure(shell, es,
3034                           es->geometry.x + to_x - from_x,
3035                           es->geometry.y + to_y - from_y,
3036                           es->buffer->width, es->buffer->height);
3037         }
3038 }
3039
3040 static void launch_desktop_shell_process(void *data);
3041
3042 static void
3043 desktop_shell_sigchld(struct weston_process *process, int status)
3044 {
3045         uint32_t time;
3046         struct desktop_shell *shell =
3047                 container_of(process, struct desktop_shell, child.process);
3048
3049         shell->child.process.pid = 0;
3050         shell->child.client = NULL; /* already destroyed by wayland */
3051
3052         /* if desktop-shell dies more than 5 times in 30 seconds, give up */
3053         time = weston_compositor_get_time();
3054         if (time - shell->child.deathstamp > 30000) {
3055                 shell->child.deathstamp = time;
3056                 shell->child.deathcount = 0;
3057         }
3058
3059         shell->child.deathcount++;
3060         if (shell->child.deathcount > 5) {
3061                 weston_log("weston-desktop-shell died, giving up.\n");
3062                 return;
3063         }
3064
3065         weston_log("weston-desktop-shell died, respawning...\n");
3066         launch_desktop_shell_process(shell);
3067 }
3068
3069 static void
3070 launch_desktop_shell_process(void *data)
3071 {
3072         struct desktop_shell *shell = data;
3073         const char *shell_exe = LIBEXECDIR "/weston-desktop-shell";
3074
3075         shell->child.client = weston_client_launch(shell->compositor,
3076                                                  &shell->child.process,
3077                                                  shell_exe,
3078                                                  desktop_shell_sigchld);
3079
3080         if (!shell->child.client)
3081                 weston_log("not able to start %s\n", shell_exe);
3082 }
3083
3084 static void
3085 bind_shell(struct wl_client *client, void *data, uint32_t version, uint32_t id)
3086 {
3087         struct desktop_shell *shell = data;
3088
3089         wl_client_add_object(client, &wl_shell_interface,
3090                              &shell_implementation, id, shell);
3091 }
3092
3093 static void
3094 unbind_desktop_shell(struct wl_resource *resource)
3095 {
3096         struct desktop_shell *shell = resource->data;
3097
3098         if (shell->locked)
3099                 resume_desktop(shell);
3100
3101         shell->child.desktop_shell = NULL;
3102         shell->prepare_event_sent = false;
3103         free(resource);
3104 }
3105
3106 static void
3107 bind_desktop_shell(struct wl_client *client,
3108                    void *data, uint32_t version, uint32_t id)
3109 {
3110         struct desktop_shell *shell = data;
3111         struct wl_resource *resource;
3112
3113         resource = wl_client_add_object(client, &desktop_shell_interface,
3114                                         &desktop_shell_implementation,
3115                                         id, shell);
3116
3117         if (client == shell->child.client) {
3118                 resource->destroy = unbind_desktop_shell;
3119                 shell->child.desktop_shell = resource;
3120                 return;
3121         }
3122
3123         wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
3124                                "permission to bind desktop_shell denied");
3125         wl_resource_destroy(resource);
3126 }
3127
3128 static void
3129 screensaver_configure(struct weston_surface *surface, int32_t sx, int32_t sy)
3130 {
3131         struct desktop_shell *shell = surface->private;
3132
3133         if (!shell->locked)
3134                 return;
3135
3136         center_on_output(surface, surface->output);
3137
3138         if (wl_list_empty(&surface->layer_link)) {
3139                 wl_list_insert(shell->lock_layer.surface_list.prev,
3140                                &surface->layer_link);
3141                 weston_surface_update_transform(surface);
3142                 shell->compositor->idle_time = shell->screensaver.duration;
3143                 weston_compositor_wake(shell->compositor);
3144                 shell->compositor->state = WESTON_COMPOSITOR_IDLE;
3145         }
3146 }
3147
3148 static void
3149 screensaver_set_surface(struct wl_client *client,
3150                         struct wl_resource *resource,
3151                         struct wl_resource *surface_resource,
3152                         struct wl_resource *output_resource)
3153 {
3154         struct desktop_shell *shell = resource->data;
3155         struct weston_surface *surface = surface_resource->data;
3156         struct weston_output *output = output_resource->data;
3157
3158         surface->configure = screensaver_configure;
3159         surface->private = shell;
3160         surface->output = output;
3161 }
3162
3163 static const struct screensaver_interface screensaver_implementation = {
3164         screensaver_set_surface
3165 };
3166
3167 static void
3168 unbind_screensaver(struct wl_resource *resource)
3169 {
3170         struct desktop_shell *shell = resource->data;
3171
3172         shell->screensaver.binding = NULL;
3173         free(resource);
3174 }
3175
3176 static void
3177 bind_screensaver(struct wl_client *client,
3178                  void *data, uint32_t version, uint32_t id)
3179 {
3180         struct desktop_shell *shell = data;
3181         struct wl_resource *resource;
3182
3183         resource = wl_client_add_object(client, &screensaver_interface,
3184                                         &screensaver_implementation,
3185                                         id, shell);
3186
3187         if (shell->screensaver.binding == NULL) {
3188                 resource->destroy = unbind_screensaver;
3189                 shell->screensaver.binding = resource;
3190                 return;
3191         }
3192
3193         wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
3194                                "interface object already bound");
3195         wl_resource_destroy(resource);
3196 }
3197
3198 static void
3199 input_panel_configure(struct weston_surface *surface, int32_t sx, int32_t sy)
3200 {
3201         struct weston_mode *mode = surface->output->current;
3202         float x = (mode->width - surface->buffer->width) / 2;
3203         float y = mode->height - surface->buffer->height;
3204
3205         /* Don't map the input panel here, wait for
3206          * show_input_panels signal. */
3207
3208         weston_surface_configure(surface,
3209                                  surface->output->x + x,
3210                                  surface->output->y + y,
3211                                  surface->buffer->width,
3212                                  surface->buffer->height);
3213 }
3214
3215 static void
3216 destroy_input_panel_surface(struct wl_listener *listener,
3217                             void *data)
3218 {
3219         struct input_panel_surface *input_panel_surface =
3220                 container_of(listener, struct input_panel_surface, listener);
3221
3222         wl_list_remove(&listener->link);
3223         wl_list_remove(&input_panel_surface->link);
3224
3225         free(input_panel_surface);
3226 }
3227
3228 static void
3229 input_panel_set_surface(struct wl_client *client,
3230                         struct wl_resource *resource,
3231                         struct wl_resource *surface_resource,
3232                         struct wl_resource *output_resource)
3233 {
3234         struct desktop_shell *shell = resource->data;
3235         struct weston_surface *surface = surface_resource->data;
3236         struct weston_output *output = output_resource->data;
3237         struct input_panel_surface *input_panel_surface;
3238
3239         surface->configure = input_panel_configure;
3240         surface->private = shell;
3241         surface->output = output;
3242
3243         input_panel_surface = malloc(sizeof *input_panel_surface);
3244         if (!input_panel_surface) {
3245                 wl_resource_post_no_memory(resource);
3246                 return;
3247         }
3248
3249         input_panel_surface->surface = surface;
3250         input_panel_surface->listener.notify = destroy_input_panel_surface;
3251
3252         wl_signal_add(&surface_resource->destroy_signal,
3253                       &input_panel_surface->listener);
3254
3255         wl_list_insert(&shell->input_panel.surfaces,
3256                        &input_panel_surface->link);
3257 }
3258
3259 static const struct input_panel_interface input_panel_implementation = {
3260         input_panel_set_surface
3261 };
3262
3263 static void
3264 unbind_input_panel(struct wl_resource *resource)
3265 {
3266         struct desktop_shell *shell = resource->data;
3267
3268         shell->input_panel.binding = NULL;
3269         free(resource);
3270 }
3271
3272 static void
3273 bind_input_panel(struct wl_client *client,
3274               void *data, uint32_t version, uint32_t id)
3275 {
3276         struct desktop_shell *shell = data;
3277         struct wl_resource *resource;
3278
3279         resource = wl_client_add_object(client, &input_panel_interface,
3280                                         &input_panel_implementation,
3281                                         id, shell);
3282
3283         if (shell->input_panel.binding == NULL) {
3284                 resource->destroy = unbind_input_panel;
3285                 shell->input_panel.binding = resource;
3286                 return;
3287         }
3288
3289         wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
3290                                "interface object already bound");
3291         wl_resource_destroy(resource);
3292 }
3293
3294 struct switcher {
3295         struct desktop_shell *shell;
3296         struct weston_surface *current;
3297         struct wl_listener listener;
3298         struct wl_keyboard_grab grab;
3299 };
3300
3301 static void
3302 switcher_next(struct switcher *switcher)
3303 {
3304         struct weston_surface *surface;
3305         struct weston_surface *first = NULL, *prev = NULL, *next = NULL;
3306         struct shell_surface *shsurf;
3307         struct workspace *ws = get_current_workspace(switcher->shell);
3308
3309         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
3310                 switch (get_shell_surface_type(surface)) {
3311                 case SHELL_SURFACE_TOPLEVEL:
3312                 case SHELL_SURFACE_FULLSCREEN:
3313                 case SHELL_SURFACE_MAXIMIZED:
3314                         if (first == NULL)
3315                                 first = surface;
3316                         if (prev == switcher->current)
3317                                 next = surface;
3318                         prev = surface;
3319                         surface->alpha = 0.25;
3320                         surface->geometry.dirty = 1;
3321                         weston_surface_damage(surface);
3322                         break;
3323                 default:
3324                         break;
3325                 }
3326
3327                 if (is_black_surface(surface, NULL)) {
3328                         surface->alpha = 0.25;
3329                         surface->geometry.dirty = 1;
3330                         weston_surface_damage(surface);
3331                 }
3332         }
3333
3334         if (next == NULL)
3335                 next = first;
3336
3337         if (next == NULL)
3338                 return;
3339
3340         wl_list_remove(&switcher->listener.link);
3341         wl_signal_add(&next->surface.resource.destroy_signal,
3342                       &switcher->listener);
3343
3344         switcher->current = next;
3345         next->alpha = 1.0;
3346
3347         shsurf = get_shell_surface(switcher->current);
3348         if (shsurf && shsurf->type ==SHELL_SURFACE_FULLSCREEN)
3349                 shsurf->fullscreen.black_surface->alpha = 1.0;
3350 }
3351
3352 static void
3353 switcher_handle_surface_destroy(struct wl_listener *listener, void *data)
3354 {
3355         struct switcher *switcher =
3356                 container_of(listener, struct switcher, listener);
3357
3358         switcher_next(switcher);
3359 }
3360
3361 static void
3362 switcher_destroy(struct switcher *switcher)
3363 {
3364         struct weston_surface *surface;
3365         struct wl_keyboard *keyboard = switcher->grab.keyboard;
3366         struct workspace *ws = get_current_workspace(switcher->shell);
3367
3368         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
3369                 surface->alpha = 1.0;
3370                 weston_surface_damage(surface);
3371         }
3372
3373         if (switcher->current)
3374                 activate(switcher->shell, switcher->current,
3375                          (struct weston_seat *) keyboard->seat);
3376         wl_list_remove(&switcher->listener.link);
3377         wl_keyboard_end_grab(keyboard);
3378         free(switcher);
3379 }
3380
3381 static void
3382 switcher_key(struct wl_keyboard_grab *grab,
3383              uint32_t time, uint32_t key, uint32_t state_w)
3384 {
3385         struct switcher *switcher = container_of(grab, struct switcher, grab);
3386         enum wl_keyboard_key_state state = state_w;
3387
3388         if (key == KEY_TAB && state == WL_KEYBOARD_KEY_STATE_PRESSED)
3389                 switcher_next(switcher);
3390 }
3391
3392 static void
3393 switcher_modifier(struct wl_keyboard_grab *grab, uint32_t serial,
3394                   uint32_t mods_depressed, uint32_t mods_latched,
3395                   uint32_t mods_locked, uint32_t group)
3396 {
3397         struct switcher *switcher = container_of(grab, struct switcher, grab);
3398         struct weston_seat *seat = (struct weston_seat *) grab->keyboard->seat;
3399
3400         if ((seat->modifier_state & switcher->shell->binding_modifier) == 0)
3401                 switcher_destroy(switcher);
3402 }
3403
3404 static const struct wl_keyboard_grab_interface switcher_grab = {
3405         switcher_key,
3406         switcher_modifier,
3407 };
3408
3409 static void
3410 switcher_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
3411                  void *data)
3412 {
3413         struct desktop_shell *shell = data;
3414         struct switcher *switcher;
3415
3416         switcher = malloc(sizeof *switcher);
3417         switcher->shell = shell;
3418         switcher->current = NULL;
3419         switcher->listener.notify = switcher_handle_surface_destroy;
3420         wl_list_init(&switcher->listener.link);
3421
3422         lower_fullscreen_layer(switcher->shell);
3423         switcher->grab.interface = &switcher_grab;
3424         wl_keyboard_start_grab(seat->keyboard, &switcher->grab);
3425         wl_keyboard_set_focus(seat->keyboard, NULL);
3426         switcher_next(switcher);
3427 }
3428
3429 static void
3430 backlight_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
3431                   void *data)
3432 {
3433         struct weston_compositor *compositor = data;
3434         struct weston_output *output;
3435         long backlight_new = 0;
3436
3437         /* TODO: we're limiting to simple use cases, where we assume just
3438          * control on the primary display. We'd have to extend later if we
3439          * ever get support for setting backlights on random desktop LCD
3440          * panels though */
3441         output = get_default_output(compositor);
3442         if (!output)
3443                 return;
3444
3445         if (!output->set_backlight)
3446                 return;
3447
3448         if (key == KEY_F9 || key == KEY_BRIGHTNESSDOWN)
3449                 backlight_new = output->backlight_current - 25;
3450         else if (key == KEY_F10 || key == KEY_BRIGHTNESSUP)
3451                 backlight_new = output->backlight_current + 25;
3452
3453         if (backlight_new < 5)
3454                 backlight_new = 5;
3455         if (backlight_new > 255)
3456                 backlight_new = 255;
3457
3458         output->backlight_current = backlight_new;
3459         output->set_backlight(output, output->backlight_current);
3460 }
3461
3462 static void
3463 debug_repaint_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
3464                       void *data)
3465 {
3466         struct desktop_shell *shell = data;
3467         struct weston_compositor *compositor = shell->compositor;
3468         struct weston_surface *surface;
3469         struct weston_plane plane;
3470
3471         if (shell->debug_repaint_surface) {
3472                 weston_surface_destroy(shell->debug_repaint_surface);
3473                 shell->debug_repaint_surface = NULL;
3474         } else {
3475                 surface = weston_surface_create(compositor);
3476                 weston_surface_set_color(surface, 1.0, 0.0, 0.0, 0.2);
3477                 weston_surface_configure(surface, 0, 0, 8192, 8192);
3478                 wl_list_insert(&compositor->fade_layer.surface_list,
3479                                &surface->layer_link);
3480                 pixman_region32_fini(&surface->input);
3481                 pixman_region32_init(&surface->input);
3482
3483                 /* Here's the dirty little trick that makes the
3484                  * repaint debugging work: we move the surface to a
3485                  * different plane and force an update_transform to
3486                  * update dependent state and clear the
3487                  * geometry.dirty bit.  This way the call to
3488                  * damage_below() in update_transform() does not
3489                  * add damage to the primary plane.  */
3490
3491                 weston_plane_init(&plane, 0, 0);
3492                 surface->plane = &plane;
3493                 weston_surface_update_transform(surface);
3494                 shell->debug_repaint_surface = surface;
3495                 surface->plane = &compositor->primary_plane;
3496                 weston_plane_release(&plane);
3497         }
3498 }
3499
3500
3501 static void
3502 fan_debug_repaint_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
3503                       void *data)
3504 {
3505         struct desktop_shell *shell = data;
3506         struct weston_compositor *compositor = shell->compositor;
3507         compositor->fan_debug = !compositor->fan_debug;
3508         weston_compositor_damage_all(compositor);
3509 }
3510
3511 static void
3512 force_kill_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
3513                    void *data)
3514 {
3515         struct wl_surface *focus_surface;
3516         struct wl_client *client;
3517         struct desktop_shell *shell = data;
3518         struct weston_compositor *compositor = shell->compositor;
3519         pid_t pid;
3520
3521         focus_surface = seat->keyboard->focus;
3522         if (!focus_surface)
3523                 return;
3524
3525         wl_signal_emit(&compositor->kill_signal, focus_surface);
3526
3527         client = focus_surface->resource.client;
3528         wl_client_get_credentials(client, &pid, NULL, NULL);
3529
3530         /* Skip clients that we launched ourselves (the credentials of
3531          * the socketpair is ours) */
3532         if (pid == getpid())
3533                 return;
3534
3535         kill(pid, SIGKILL);
3536 }
3537
3538 static void
3539 workspace_up_binding(struct wl_seat *seat, uint32_t time,
3540                      uint32_t key, void *data)
3541 {
3542         struct desktop_shell *shell = data;
3543         unsigned int new_index = shell->workspaces.current;
3544
3545         if (shell->locked)
3546                 return;
3547         if (new_index != 0)
3548                 new_index--;
3549
3550         change_workspace(shell, new_index);
3551 }
3552
3553 static void
3554 workspace_down_binding(struct wl_seat *seat, uint32_t time,
3555                        uint32_t key, void *data)
3556 {
3557         struct desktop_shell *shell = data;
3558         unsigned int new_index = shell->workspaces.current;
3559
3560         if (shell->locked)
3561                 return;
3562         if (new_index < shell->workspaces.num - 1)
3563                 new_index++;
3564
3565         change_workspace(shell, new_index);
3566 }
3567
3568 static void
3569 workspace_f_binding(struct wl_seat *seat, uint32_t time,
3570                     uint32_t key, void *data)
3571 {
3572         struct desktop_shell *shell = data;
3573         unsigned int new_index;
3574
3575         if (shell->locked)
3576                 return;
3577         new_index = key - KEY_F1;
3578         if (new_index >= shell->workspaces.num)
3579                 new_index = shell->workspaces.num - 1;
3580
3581         change_workspace(shell, new_index);
3582 }
3583
3584 static void
3585 workspace_move_surface_up_binding(struct wl_seat *seat, uint32_t time,
3586                                   uint32_t key, void *data)
3587 {
3588         struct desktop_shell *shell = data;
3589         unsigned int new_index = shell->workspaces.current;
3590
3591         if (shell->locked)
3592                 return;
3593
3594         if (new_index != 0)
3595                 new_index--;
3596
3597         take_surface_to_workspace_by_seat(shell, seat, new_index);
3598 }
3599
3600 static void
3601 workspace_move_surface_down_binding(struct wl_seat *seat, uint32_t time,
3602                                     uint32_t key, void *data)
3603 {
3604         struct desktop_shell *shell = data;
3605         unsigned int new_index = shell->workspaces.current;
3606
3607         if (shell->locked)
3608                 return;
3609
3610         if (new_index < shell->workspaces.num - 1)
3611                 new_index++;
3612
3613         take_surface_to_workspace_by_seat(shell, seat, new_index);
3614 }
3615
3616 static void
3617 shell_destroy(struct wl_listener *listener, void *data)
3618 {
3619         struct desktop_shell *shell =
3620                 container_of(listener, struct desktop_shell, destroy_listener);
3621         struct workspace **ws;
3622
3623         if (shell->child.client)
3624                 wl_client_destroy(shell->child.client);
3625
3626         wl_list_remove(&shell->lock_listener.link);
3627         wl_list_remove(&shell->unlock_listener.link);
3628         wl_list_remove(&shell->show_input_panel_listener.link);
3629         wl_list_remove(&shell->hide_input_panel_listener.link);
3630
3631         wl_array_for_each(ws, &shell->workspaces.array)
3632                 workspace_destroy(*ws);
3633         wl_array_release(&shell->workspaces.array);
3634
3635         free(shell->screensaver.path);
3636         free(shell);
3637 }
3638
3639 static void
3640 shell_add_bindings(struct weston_compositor *ec, struct desktop_shell *shell)
3641 {
3642         uint32_t mod;
3643         int i, num_workspace_bindings;
3644
3645         /* fixed bindings */
3646         weston_compositor_add_key_binding(ec, KEY_BACKSPACE,
3647                                           MODIFIER_CTRL | MODIFIER_ALT,
3648                                           terminate_binding, ec);
3649         weston_compositor_add_button_binding(ec, BTN_LEFT, 0,
3650                                              click_to_activate_binding,
3651                                              shell);
3652         weston_compositor_add_axis_binding(ec, WL_POINTER_AXIS_VERTICAL_SCROLL,
3653                                            MODIFIER_SUPER | MODIFIER_ALT,
3654                                            surface_opacity_binding, NULL);
3655         weston_compositor_add_axis_binding(ec, WL_POINTER_AXIS_VERTICAL_SCROLL,
3656                                            MODIFIER_SUPER, zoom_axis_binding,
3657                                            NULL);
3658
3659         /* configurable bindings */
3660         mod = shell->binding_modifier;
3661         weston_compositor_add_key_binding(ec, KEY_PAGEUP, mod,
3662                                           zoom_key_binding, NULL);
3663         weston_compositor_add_key_binding(ec, KEY_PAGEDOWN, mod,
3664                                           zoom_key_binding, NULL);
3665         weston_compositor_add_button_binding(ec, BTN_LEFT, mod, move_binding,
3666                                              shell);
3667         weston_compositor_add_button_binding(ec, BTN_MIDDLE, mod,
3668                                              resize_binding, shell);
3669         weston_compositor_add_button_binding(ec, BTN_RIGHT, mod,
3670                                              rotate_binding, NULL);
3671         weston_compositor_add_key_binding(ec, KEY_TAB, mod, switcher_binding,
3672                                           shell);
3673         weston_compositor_add_key_binding(ec, KEY_F9, mod, backlight_binding,
3674                                           ec);
3675         weston_compositor_add_key_binding(ec, KEY_BRIGHTNESSDOWN, 0,
3676                                           backlight_binding, ec);
3677         weston_compositor_add_key_binding(ec, KEY_F10, mod, backlight_binding,
3678                                           ec);
3679         weston_compositor_add_key_binding(ec, KEY_BRIGHTNESSUP, 0,
3680                                           backlight_binding, ec);
3681         weston_compositor_add_key_binding(ec, KEY_SPACE, mod | MODIFIER_SHIFT,
3682                                           debug_repaint_binding, shell);
3683         weston_compositor_add_key_binding(ec, KEY_SPACE, mod | MODIFIER_ALT,
3684                                           fan_debug_repaint_binding, shell);
3685         weston_compositor_add_key_binding(ec, KEY_K, mod,
3686                                           force_kill_binding, shell);
3687         weston_compositor_add_key_binding(ec, KEY_UP, mod,
3688                                           workspace_up_binding, shell);
3689         weston_compositor_add_key_binding(ec, KEY_DOWN, mod,
3690                                           workspace_down_binding, shell);
3691         weston_compositor_add_key_binding(ec, KEY_UP, mod | MODIFIER_SHIFT,
3692                                           workspace_move_surface_up_binding,
3693                                           shell);
3694         weston_compositor_add_key_binding(ec, KEY_DOWN, mod | MODIFIER_SHIFT,
3695                                           workspace_move_surface_down_binding,
3696                                           shell);
3697
3698         /* Add bindings for mod+F[1-6] for workspace 1 to 6. */
3699         if (shell->workspaces.num > 1) {
3700                 num_workspace_bindings = shell->workspaces.num;
3701                 if (num_workspace_bindings > 6)
3702                         num_workspace_bindings = 6;
3703                 for (i = 0; i < num_workspace_bindings; i++)
3704                         weston_compositor_add_key_binding(ec, KEY_F1 + i, mod,
3705                                                           workspace_f_binding,
3706                                                           shell);
3707         }
3708 }
3709
3710 WL_EXPORT int
3711 module_init(struct weston_compositor *ec)
3712 {
3713         struct weston_seat *seat;
3714         struct desktop_shell *shell;
3715         struct workspace **pws;
3716         unsigned int i;
3717         struct wl_event_loop *loop;
3718
3719         shell = malloc(sizeof *shell);
3720         if (shell == NULL)
3721                 return -1;
3722
3723         memset(shell, 0, sizeof *shell);
3724         shell->compositor = ec;
3725
3726         shell->destroy_listener.notify = shell_destroy;
3727         wl_signal_add(&ec->destroy_signal, &shell->destroy_listener);
3728         shell->lock_listener.notify = lock;
3729         wl_signal_add(&ec->lock_signal, &shell->lock_listener);
3730         shell->unlock_listener.notify = unlock;
3731         wl_signal_add(&ec->unlock_signal, &shell->unlock_listener);
3732         shell->show_input_panel_listener.notify = show_input_panels;
3733         wl_signal_add(&ec->show_input_panel_signal, &shell->show_input_panel_listener);
3734         shell->hide_input_panel_listener.notify = hide_input_panels;
3735         wl_signal_add(&ec->hide_input_panel_signal, &shell->hide_input_panel_listener);
3736         ec->ping_handler = ping_handler;
3737         ec->shell_interface.shell = shell;
3738         ec->shell_interface.create_shell_surface = create_shell_surface;
3739         ec->shell_interface.set_toplevel = set_toplevel;
3740         ec->shell_interface.set_transient = set_transient;
3741         ec->shell_interface.move = surface_move;
3742         ec->shell_interface.resize = surface_resize;
3743
3744         wl_list_init(&shell->screensaver.surfaces);
3745         wl_list_init(&shell->input_panel.surfaces);
3746
3747         weston_layer_init(&shell->fullscreen_layer, &ec->cursor_layer.link);
3748         weston_layer_init(&shell->panel_layer, &shell->fullscreen_layer.link);
3749         weston_layer_init(&shell->background_layer, &shell->panel_layer.link);
3750         weston_layer_init(&shell->lock_layer, NULL);
3751         weston_layer_init(&shell->input_panel_layer, NULL);
3752
3753         wl_array_init(&shell->workspaces.array);
3754         wl_list_init(&shell->workspaces.client_list);
3755
3756         shell_configuration(shell);
3757
3758         for (i = 0; i < shell->workspaces.num; i++) {
3759                 pws = wl_array_add(&shell->workspaces.array, sizeof *pws);
3760                 if (pws == NULL)
3761                         return -1;
3762
3763                 *pws = workspace_create();
3764                 if (*pws == NULL)
3765                         return -1;
3766         }
3767         activate_workspace(shell, 0);
3768
3769         wl_list_init(&shell->workspaces.anim_sticky_list);
3770         wl_list_init(&shell->workspaces.animation.link);
3771         shell->workspaces.animation.frame = animate_workspace_change_frame;
3772
3773         if (wl_display_add_global(ec->wl_display, &wl_shell_interface,
3774                                   shell, bind_shell) == NULL)
3775                 return -1;
3776
3777         if (wl_display_add_global(ec->wl_display,
3778                                   &desktop_shell_interface,
3779                                   shell, bind_desktop_shell) == NULL)
3780                 return -1;
3781
3782         if (wl_display_add_global(ec->wl_display, &screensaver_interface,
3783                                   shell, bind_screensaver) == NULL)
3784                 return -1;
3785
3786         if (wl_display_add_global(ec->wl_display, &input_panel_interface,
3787                                   shell, bind_input_panel) == NULL)
3788                 return -1;
3789
3790         if (wl_display_add_global(ec->wl_display, &workspace_manager_interface,
3791                                   shell, bind_workspace_manager) == NULL)
3792                 return -1;
3793
3794         shell->child.deathstamp = weston_compositor_get_time();
3795
3796         loop = wl_display_get_event_loop(ec->wl_display);
3797         wl_event_loop_add_idle(loop, launch_desktop_shell_process, shell);
3798
3799         wl_list_for_each(seat, &ec->seat_list, link)
3800                 create_pointer_focus_listener(seat);
3801
3802         shell_add_bindings(ec, shell);
3803
3804         return 0;
3805 }