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         weston_surface_set_position(es, shsurf->popup.x, shsurf->popup.y);
1870
1871         shsurf->popup.initial_up = 0;
1872
1873         /* We don't require the grab to still be active, but if another
1874          * grab has started in the meantime, we end the popup now. */
1875         if (seat->pointer->grab_serial == shsurf->popup.serial) {
1876                 wl_pointer_start_grab(seat->pointer, &shsurf->popup.grab);
1877         } else {
1878                 wl_shell_surface_send_popup_done(&shsurf->resource);
1879         }
1880 }
1881
1882 static void
1883 shell_surface_set_popup(struct wl_client *client,
1884                         struct wl_resource *resource,
1885                         struct wl_resource *seat_resource,
1886                         uint32_t serial,
1887                         struct wl_resource *parent_resource,
1888                         int32_t x, int32_t y, uint32_t flags)
1889 {
1890         struct shell_surface *shsurf = resource->data;
1891
1892         shsurf->type = SHELL_SURFACE_POPUP;
1893         shsurf->parent = parent_resource->data;
1894         shsurf->popup.seat = seat_resource->data;
1895         shsurf->popup.serial = serial;
1896         shsurf->popup.x = x;
1897         shsurf->popup.y = y;
1898 }
1899
1900 static const struct wl_shell_surface_interface shell_surface_implementation = {
1901         shell_surface_pong,
1902         shell_surface_move,
1903         shell_surface_resize,
1904         shell_surface_set_toplevel,
1905         shell_surface_set_transient,
1906         shell_surface_set_fullscreen,
1907         shell_surface_set_popup,
1908         shell_surface_set_maximized,
1909         shell_surface_set_title,
1910         shell_surface_set_class
1911 };
1912
1913 static void
1914 destroy_shell_surface(struct shell_surface *shsurf)
1915 {
1916         if (shsurf->popup.grab.pointer)
1917                 wl_pointer_end_grab(shsurf->popup.grab.pointer);
1918
1919         if (shsurf->fullscreen.type == WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER &&
1920             shell_surface_is_top_fullscreen(shsurf)) {
1921                 weston_output_switch_mode(shsurf->fullscreen_output,
1922                                           shsurf->fullscreen_output->origin);
1923         }
1924
1925         if (shsurf->fullscreen.black_surface)
1926                 weston_surface_destroy(shsurf->fullscreen.black_surface);
1927
1928         /* As destroy_resource() use wl_list_for_each_safe(),
1929          * we can always remove the listener.
1930          */
1931         wl_list_remove(&shsurf->surface_destroy_listener.link);
1932         shsurf->surface->configure = NULL;
1933         ping_timer_destroy(shsurf);
1934
1935         wl_list_remove(&shsurf->link);
1936         free(shsurf);
1937 }
1938
1939 static void
1940 shell_destroy_shell_surface(struct wl_resource *resource)
1941 {
1942         struct shell_surface *shsurf = resource->data;
1943
1944         destroy_shell_surface(shsurf);
1945 }
1946
1947 static void
1948 shell_handle_surface_destroy(struct wl_listener *listener, void *data)
1949 {
1950         struct shell_surface *shsurf = container_of(listener,
1951                                                     struct shell_surface,
1952                                                     surface_destroy_listener);
1953
1954         if (shsurf->resource.client) {
1955                 wl_resource_destroy(&shsurf->resource);
1956         } else {
1957                 wl_signal_emit(&shsurf->resource.destroy_signal,
1958                                &shsurf->resource);
1959                 destroy_shell_surface(shsurf);
1960         }
1961 }
1962
1963 static void
1964 shell_surface_configure(struct weston_surface *, int32_t, int32_t);
1965
1966 static struct shell_surface *
1967 get_shell_surface(struct weston_surface *surface)
1968 {
1969         if (surface->configure == shell_surface_configure)
1970                 return surface->private;
1971         else
1972                 return NULL;
1973 }
1974
1975 static  struct shell_surface *
1976 create_shell_surface(void *shell, struct weston_surface *surface,
1977                      const struct weston_shell_client *client)
1978 {
1979         struct shell_surface *shsurf;
1980
1981         if (surface->configure) {
1982                 weston_log("surface->configure already set\n");
1983                 return NULL;
1984         }
1985
1986         shsurf = calloc(1, sizeof *shsurf);
1987         if (!shsurf) {
1988                 weston_log("no memory to allocate shell surface\n");
1989                 return NULL;
1990         }
1991
1992         surface->configure = shell_surface_configure;
1993         surface->private = shsurf;
1994
1995         shsurf->shell = (struct desktop_shell *) shell;
1996         shsurf->unresponsive = 0;
1997         shsurf->saved_position_valid = false;
1998         shsurf->saved_rotation_valid = false;
1999         shsurf->surface = surface;
2000         shsurf->fullscreen.type = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
2001         shsurf->fullscreen.framerate = 0;
2002         shsurf->fullscreen.black_surface = NULL;
2003         shsurf->ping_timer = NULL;
2004         wl_list_init(&shsurf->fullscreen.transform.link);
2005
2006         wl_signal_init(&shsurf->resource.destroy_signal);
2007         shsurf->surface_destroy_listener.notify = shell_handle_surface_destroy;
2008         wl_signal_add(&surface->surface.resource.destroy_signal,
2009                       &shsurf->surface_destroy_listener);
2010
2011         /* init link so its safe to always remove it in destroy_shell_surface */
2012         wl_list_init(&shsurf->link);
2013
2014         /* empty when not in use */
2015         wl_list_init(&shsurf->rotation.transform.link);
2016         weston_matrix_init(&shsurf->rotation.rotation);
2017
2018         wl_list_init(&shsurf->workspace_transform.link);
2019
2020         shsurf->type = SHELL_SURFACE_NONE;
2021         shsurf->next_type = SHELL_SURFACE_NONE;
2022
2023         shsurf->client = client;
2024
2025         return shsurf;
2026 }
2027
2028 static void
2029 shell_get_shell_surface(struct wl_client *client,
2030                         struct wl_resource *resource,
2031                         uint32_t id,
2032                         struct wl_resource *surface_resource)
2033 {
2034         struct weston_surface *surface = surface_resource->data;
2035         struct desktop_shell *shell = resource->data;
2036         struct shell_surface *shsurf;
2037
2038         if (get_shell_surface(surface)) {
2039                 wl_resource_post_error(surface_resource,
2040                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2041                                        "desktop_shell::get_shell_surface already requested");
2042                 return;
2043         }
2044
2045         shsurf = create_shell_surface(shell, surface, &shell_client);
2046         if (!shsurf) {
2047                 wl_resource_post_error(surface_resource,
2048                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2049                                        "surface->configure already set");
2050                 return;
2051         }
2052
2053         shsurf->resource.destroy = shell_destroy_shell_surface;
2054         shsurf->resource.object.id = id;
2055         shsurf->resource.object.interface = &wl_shell_surface_interface;
2056         shsurf->resource.object.implementation =
2057                 (void (**)(void)) &shell_surface_implementation;
2058         shsurf->resource.data = shsurf;
2059
2060         wl_client_add_resource(client, &shsurf->resource);
2061 }
2062
2063 static const struct wl_shell_interface shell_implementation = {
2064         shell_get_shell_surface
2065 };
2066
2067 static void
2068 handle_screensaver_sigchld(struct weston_process *proc, int status)
2069 {
2070         proc->pid = 0;
2071 }
2072
2073 static void
2074 launch_screensaver(struct desktop_shell *shell)
2075 {
2076         if (shell->screensaver.binding)
2077                 return;
2078
2079         if (!shell->screensaver.path)
2080                 return;
2081
2082         if (shell->screensaver.process.pid != 0) {
2083                 weston_log("old screensaver still running\n");
2084                 return;
2085         }
2086
2087         weston_client_launch(shell->compositor,
2088                            &shell->screensaver.process,
2089                            shell->screensaver.path,
2090                            handle_screensaver_sigchld);
2091 }
2092
2093 static void
2094 terminate_screensaver(struct desktop_shell *shell)
2095 {
2096         if (shell->screensaver.process.pid == 0)
2097                 return;
2098
2099         kill(shell->screensaver.process.pid, SIGTERM);
2100 }
2101
2102 static void
2103 configure_static_surface(struct weston_surface *es, struct weston_layer *layer)
2104 {
2105         struct weston_surface *s, *next;
2106
2107         wl_list_for_each_safe(s, next, &layer->surface_list, layer_link) {
2108                 if (s->output == es->output && s != es) {
2109                         weston_surface_unmap(s);
2110                         s->configure = NULL;
2111                 }
2112         }
2113
2114         weston_surface_configure(es, es->output->x, es->output->y,
2115                                  es->buffer->width, es->buffer->height);
2116
2117         if (wl_list_empty(&es->layer_link)) {
2118                 wl_list_insert(&layer->surface_list, &es->layer_link);
2119                 weston_compositor_schedule_repaint(es->compositor);
2120         }
2121 }
2122
2123 static void
2124 background_configure(struct weston_surface *es, int32_t sx, int32_t sy)
2125 {
2126         struct desktop_shell *shell = es->private;
2127
2128         configure_static_surface(es, &shell->background_layer);
2129 }
2130
2131 static void
2132 desktop_shell_set_background(struct wl_client *client,
2133                              struct wl_resource *resource,
2134                              struct wl_resource *output_resource,
2135                              struct wl_resource *surface_resource)
2136 {
2137         struct desktop_shell *shell = resource->data;
2138         struct weston_surface *surface = surface_resource->data;
2139
2140         if (surface->configure) {
2141                 wl_resource_post_error(surface_resource,
2142                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2143                                        "surface role already assigned");
2144                 return;
2145         }
2146
2147         surface->configure = background_configure;
2148         surface->private = shell;
2149         surface->output = output_resource->data;
2150         desktop_shell_send_configure(resource, 0,
2151                                      surface_resource,
2152                                      surface->output->width,
2153                                      surface->output->height);
2154 }
2155
2156 static void
2157 panel_configure(struct weston_surface *es, int32_t sx, int32_t sy)
2158 {
2159         struct desktop_shell *shell = es->private;
2160
2161         configure_static_surface(es, &shell->panel_layer);
2162 }
2163
2164 static void
2165 desktop_shell_set_panel(struct wl_client *client,
2166                         struct wl_resource *resource,
2167                         struct wl_resource *output_resource,
2168                         struct wl_resource *surface_resource)
2169 {
2170         struct desktop_shell *shell = resource->data;
2171         struct weston_surface *surface = surface_resource->data;
2172
2173         if (surface->configure) {
2174                 wl_resource_post_error(surface_resource,
2175                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2176                                        "surface role already assigned");
2177                 return;
2178         }
2179
2180         surface->configure = panel_configure;
2181         surface->private = shell;
2182         surface->output = output_resource->data;
2183         desktop_shell_send_configure(resource, 0,
2184                                      surface_resource,
2185                                      surface->output->width,
2186                                      surface->output->height);
2187 }
2188
2189 static void
2190 lock_surface_configure(struct weston_surface *surface, int32_t sx, int32_t sy)
2191 {
2192         struct desktop_shell *shell = surface->private;
2193
2194         center_on_output(surface, get_default_output(shell->compositor));
2195
2196         if (!weston_surface_is_mapped(surface)) {
2197                 wl_list_insert(&shell->lock_layer.surface_list,
2198                                &surface->layer_link);
2199                 weston_surface_update_transform(surface);
2200                 weston_compositor_wake(shell->compositor);
2201         }
2202 }
2203
2204 static void
2205 handle_lock_surface_destroy(struct wl_listener *listener, void *data)
2206 {
2207         struct desktop_shell *shell =
2208             container_of(listener, struct desktop_shell, lock_surface_listener);
2209
2210         weston_log("lock surface gone\n");
2211         shell->lock_surface = NULL;
2212 }
2213
2214 static void
2215 desktop_shell_set_lock_surface(struct wl_client *client,
2216                                struct wl_resource *resource,
2217                                struct wl_resource *surface_resource)
2218 {
2219         struct desktop_shell *shell = resource->data;
2220         struct weston_surface *surface = surface_resource->data;
2221
2222         shell->prepare_event_sent = false;
2223
2224         if (!shell->locked)
2225                 return;
2226
2227         shell->lock_surface = surface;
2228
2229         shell->lock_surface_listener.notify = handle_lock_surface_destroy;
2230         wl_signal_add(&surface_resource->destroy_signal,
2231                       &shell->lock_surface_listener);
2232
2233         surface->configure = lock_surface_configure;
2234         surface->private = shell;
2235 }
2236
2237 static void
2238 resume_desktop(struct desktop_shell *shell)
2239 {
2240         struct weston_surface *surface;
2241         struct workspace *ws = get_current_workspace(shell);
2242
2243         wl_list_for_each(surface, &shell->screensaver.surfaces, link)
2244                 weston_surface_unmap(surface);
2245
2246         terminate_screensaver(shell);
2247
2248         wl_list_remove(&shell->lock_layer.link);
2249         wl_list_insert(&shell->compositor->cursor_layer.link,
2250                        &shell->fullscreen_layer.link);
2251         wl_list_insert(&shell->fullscreen_layer.link,
2252                        &shell->panel_layer.link);
2253         if (shell->showing_input_panels) {
2254                 wl_list_insert(&shell->panel_layer.link,
2255                                &shell->input_panel_layer.link);
2256                 wl_list_insert(&shell->input_panel_layer.link,
2257                                &ws->layer.link);
2258         } else {
2259                 wl_list_insert(&shell->panel_layer.link, &ws->layer.link);
2260         }
2261
2262         restore_focus_state(shell, get_current_workspace(shell));
2263
2264         shell->locked = false;
2265         shell->compositor->idle_time = shell->compositor->option_idle_time;
2266         weston_compositor_wake(shell->compositor);
2267         weston_compositor_damage_all(shell->compositor);
2268 }
2269
2270 static void
2271 desktop_shell_unlock(struct wl_client *client,
2272                      struct wl_resource *resource)
2273 {
2274         struct desktop_shell *shell = resource->data;
2275
2276         shell->prepare_event_sent = false;
2277
2278         if (shell->locked)
2279                 resume_desktop(shell);
2280 }
2281
2282 static void
2283 desktop_shell_set_grab_surface(struct wl_client *client,
2284                                struct wl_resource *resource,
2285                                struct wl_resource *surface_resource)
2286 {
2287         struct desktop_shell *shell = resource->data;
2288
2289         shell->grab_surface = surface_resource->data;
2290 }
2291
2292 static const struct desktop_shell_interface desktop_shell_implementation = {
2293         desktop_shell_set_background,
2294         desktop_shell_set_panel,
2295         desktop_shell_set_lock_surface,
2296         desktop_shell_unlock,
2297         desktop_shell_set_grab_surface
2298 };
2299
2300 static enum shell_surface_type
2301 get_shell_surface_type(struct weston_surface *surface)
2302 {
2303         struct shell_surface *shsurf;
2304
2305         shsurf = get_shell_surface(surface);
2306         if (!shsurf)
2307                 return SHELL_SURFACE_NONE;
2308         return shsurf->type;
2309 }
2310
2311 static void
2312 move_binding(struct wl_seat *seat, uint32_t time, uint32_t button, void *data)
2313 {
2314         struct weston_surface *surface =
2315                 (struct weston_surface *) seat->pointer->focus;
2316         struct shell_surface *shsurf;
2317
2318         if (surface == NULL)
2319                 return;
2320
2321         shsurf = get_shell_surface(surface);
2322         if (shsurf == NULL || shsurf->type == SHELL_SURFACE_FULLSCREEN)
2323                 return;
2324
2325         surface_move(shsurf, (struct weston_seat *) seat);
2326 }
2327
2328 static void
2329 resize_binding(struct wl_seat *seat, uint32_t time, uint32_t button, void *data)
2330 {
2331         struct weston_surface *surface =
2332                 (struct weston_surface *) seat->pointer->focus;
2333         uint32_t edges = 0;
2334         int32_t x, y;
2335         struct shell_surface *shsurf;
2336
2337         if (surface == NULL)
2338                 return;
2339
2340         shsurf = get_shell_surface(surface);
2341         if (!shsurf || shsurf->type == SHELL_SURFACE_FULLSCREEN)
2342                 return;
2343
2344         weston_surface_from_global(surface,
2345                                    wl_fixed_to_int(seat->pointer->grab_x),
2346                                    wl_fixed_to_int(seat->pointer->grab_y),
2347                                    &x, &y);
2348
2349         if (x < surface->geometry.width / 3)
2350                 edges |= WL_SHELL_SURFACE_RESIZE_LEFT;
2351         else if (x < 2 * surface->geometry.width / 3)
2352                 edges |= 0;
2353         else
2354                 edges |= WL_SHELL_SURFACE_RESIZE_RIGHT;
2355
2356         if (y < surface->geometry.height / 3)
2357                 edges |= WL_SHELL_SURFACE_RESIZE_TOP;
2358         else if (y < 2 * surface->geometry.height / 3)
2359                 edges |= 0;
2360         else
2361                 edges |= WL_SHELL_SURFACE_RESIZE_BOTTOM;
2362
2363         surface_resize(shsurf, (struct weston_seat *) seat, edges);
2364 }
2365
2366 static void
2367 surface_opacity_binding(struct wl_seat *seat, uint32_t time, uint32_t axis,
2368                         wl_fixed_t value, void *data)
2369 {
2370         float step = 0.05;
2371         struct shell_surface *shsurf;
2372         struct weston_surface *surface =
2373                 (struct weston_surface *) seat->pointer->focus;
2374
2375         if (surface == NULL)
2376                 return;
2377
2378         shsurf = get_shell_surface(surface);
2379         if (!shsurf)
2380                 return;
2381
2382         surface->alpha += wl_fixed_to_double(value) * step;
2383
2384         if (surface->alpha > 1.0)
2385                 surface->alpha = 1.0;
2386         if (surface->alpha < step)
2387                 surface->alpha = step;
2388
2389         surface->geometry.dirty = 1;
2390         weston_surface_damage(surface);
2391 }
2392
2393 static void
2394 do_zoom(struct wl_seat *seat, uint32_t time, uint32_t key, uint32_t axis,
2395         wl_fixed_t value)
2396 {
2397         struct weston_seat *ws = (struct weston_seat *) seat;
2398         struct weston_compositor *compositor = ws->compositor;
2399         struct weston_output *output;
2400         float increment;
2401
2402         wl_list_for_each(output, &compositor->output_list, link) {
2403                 if (pixman_region32_contains_point(&output->region,
2404                                                    wl_fixed_to_double(seat->pointer->x),
2405                                                    wl_fixed_to_double(seat->pointer->y),
2406                                                    NULL)) {
2407                         if (key == KEY_PAGEUP)
2408                                 increment = output->zoom.increment;
2409                         else if (key == KEY_PAGEDOWN)
2410                                 increment = -output->zoom.increment;
2411                         else if (axis == WL_POINTER_AXIS_VERTICAL_SCROLL)
2412                                 increment = output->zoom.increment *
2413                                             wl_fixed_to_double(value);
2414                         else
2415                                 increment = 0;
2416
2417                         output->zoom.level += increment;
2418
2419                         if (output->zoom.level < 0.0)
2420                                 output->zoom.level = 0.0;
2421                         else if (output->zoom.level > output->zoom.max_level)
2422                                 output->zoom.level = output->zoom.max_level;
2423                         else {
2424                                 output->zoom.active = 1;
2425                                 output->disable_planes++;
2426                         }
2427
2428                         output->zoom.spring_z.target = output->zoom.level;
2429
2430                         weston_output_update_zoom(output, output->zoom.type);
2431                 }
2432         }
2433 }
2434
2435 static void
2436 zoom_axis_binding(struct wl_seat *seat, uint32_t time, uint32_t axis,
2437                   wl_fixed_t value, void *data)
2438 {
2439         do_zoom(seat, time, 0, axis, value);
2440 }
2441
2442 static void
2443 zoom_key_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
2444                  void *data)
2445 {
2446         do_zoom(seat, time, key, 0, 0);
2447 }
2448
2449 static void
2450 terminate_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
2451                   void *data)
2452 {
2453         struct weston_compositor *compositor = data;
2454
2455         wl_display_terminate(compositor->wl_display);
2456 }
2457
2458 static void
2459 rotate_grab_motion(struct wl_pointer_grab *grab,
2460                    uint32_t time, wl_fixed_t x, wl_fixed_t y)
2461 {
2462         struct rotate_grab *rotate =
2463                 container_of(grab, struct rotate_grab, base.grab);
2464         struct wl_pointer *pointer = grab->pointer;
2465         struct shell_surface *shsurf = rotate->base.shsurf;
2466         struct weston_surface *surface;
2467         float cx, cy, dx, dy, cposx, cposy, dposx, dposy, r;
2468
2469         if (!shsurf)
2470                 return;
2471
2472         surface = shsurf->surface;
2473
2474         cx = 0.5f * surface->geometry.width;
2475         cy = 0.5f * surface->geometry.height;
2476
2477         dx = wl_fixed_to_double(pointer->x) - rotate->center.x;
2478         dy = wl_fixed_to_double(pointer->y) - rotate->center.y;
2479         r = sqrtf(dx * dx + dy * dy);
2480
2481         wl_list_remove(&shsurf->rotation.transform.link);
2482         shsurf->surface->geometry.dirty = 1;
2483
2484         if (r > 20.0f) {
2485                 struct weston_matrix *matrix =
2486                         &shsurf->rotation.transform.matrix;
2487
2488                 weston_matrix_init(&rotate->rotation);
2489                 rotate->rotation.d[0] = dx / r;
2490                 rotate->rotation.d[4] = -dy / r;
2491                 rotate->rotation.d[1] = -rotate->rotation.d[4];
2492                 rotate->rotation.d[5] = rotate->rotation.d[0];
2493
2494                 weston_matrix_init(matrix);
2495                 weston_matrix_translate(matrix, -cx, -cy, 0.0f);
2496                 weston_matrix_multiply(matrix, &shsurf->rotation.rotation);
2497                 weston_matrix_multiply(matrix, &rotate->rotation);
2498                 weston_matrix_translate(matrix, cx, cy, 0.0f);
2499
2500                 wl_list_insert(
2501                         &shsurf->surface->geometry.transformation_list,
2502                         &shsurf->rotation.transform.link);
2503         } else {
2504                 wl_list_init(&shsurf->rotation.transform.link);
2505                 weston_matrix_init(&shsurf->rotation.rotation);
2506                 weston_matrix_init(&rotate->rotation);
2507         }
2508
2509         /* We need to adjust the position of the surface
2510          * in case it was resized in a rotated state before */
2511         cposx = surface->geometry.x + cx;
2512         cposy = surface->geometry.y + cy;
2513         dposx = rotate->center.x - cposx;
2514         dposy = rotate->center.y - cposy;
2515         if (dposx != 0.0f || dposy != 0.0f) {
2516                 weston_surface_set_position(surface,
2517                                             surface->geometry.x + dposx,
2518                                             surface->geometry.y + dposy);
2519         }
2520
2521         /* Repaint implies weston_surface_update_transform(), which
2522          * lazily applies the damage due to rotation update.
2523          */
2524         weston_compositor_schedule_repaint(shsurf->surface->compositor);
2525 }
2526
2527 static void
2528 rotate_grab_button(struct wl_pointer_grab *grab,
2529                  uint32_t time, uint32_t button, uint32_t state_w)
2530 {
2531         struct rotate_grab *rotate =
2532                 container_of(grab, struct rotate_grab, base.grab);
2533         struct wl_pointer *pointer = grab->pointer;
2534         struct shell_surface *shsurf = rotate->base.shsurf;
2535         enum wl_pointer_button_state state = state_w;
2536
2537         if (pointer->button_count == 0 &&
2538             state == WL_POINTER_BUTTON_STATE_RELEASED) {
2539                 if (shsurf)
2540                         weston_matrix_multiply(&shsurf->rotation.rotation,
2541                                                &rotate->rotation);
2542                 shell_grab_end(&rotate->base);
2543                 free(rotate);
2544         }
2545 }
2546
2547 static const struct wl_pointer_grab_interface rotate_grab_interface = {
2548         noop_grab_focus,
2549         rotate_grab_motion,
2550         rotate_grab_button,
2551 };
2552
2553 static void
2554 rotate_binding(struct wl_seat *seat, uint32_t time, uint32_t button,
2555                void *data)
2556 {
2557         struct weston_surface *base_surface =
2558                 (struct weston_surface *) seat->pointer->focus;
2559         struct shell_surface *surface;
2560         struct rotate_grab *rotate;
2561         float dx, dy;
2562         float r;
2563
2564         if (base_surface == NULL)
2565                 return;
2566
2567         surface = get_shell_surface(base_surface);
2568         if (!surface || surface->type == SHELL_SURFACE_FULLSCREEN)
2569                 return;
2570
2571         rotate = malloc(sizeof *rotate);
2572         if (!rotate)
2573                 return;
2574
2575         weston_surface_to_global_float(surface->surface,
2576                                        surface->surface->geometry.width / 2,
2577                                        surface->surface->geometry.height / 2,
2578                                        &rotate->center.x, &rotate->center.y);
2579
2580         dx = wl_fixed_to_double(seat->pointer->x) - rotate->center.x;
2581         dy = wl_fixed_to_double(seat->pointer->y) - rotate->center.y;
2582         r = sqrtf(dx * dx + dy * dy);
2583         if (r > 20.0f) {
2584                 struct weston_matrix inverse;
2585
2586                 weston_matrix_init(&inverse);
2587                 inverse.d[0] = dx / r;
2588                 inverse.d[4] = dy / r;
2589                 inverse.d[1] = -inverse.d[4];
2590                 inverse.d[5] = inverse.d[0];
2591                 weston_matrix_multiply(&surface->rotation.rotation, &inverse);
2592
2593                 weston_matrix_init(&rotate->rotation);
2594                 rotate->rotation.d[0] = dx / r;
2595                 rotate->rotation.d[4] = -dy / r;
2596                 rotate->rotation.d[1] = -rotate->rotation.d[4];
2597                 rotate->rotation.d[5] = rotate->rotation.d[0];
2598         } else {
2599                 weston_matrix_init(&surface->rotation.rotation);
2600                 weston_matrix_init(&rotate->rotation);
2601         }
2602
2603         shell_grab_start(&rotate->base, &rotate_grab_interface, surface,
2604                          seat->pointer, DESKTOP_SHELL_CURSOR_ARROW);
2605 }
2606
2607 static void
2608 lower_fullscreen_layer(struct desktop_shell *shell)
2609 {
2610         struct workspace *ws;
2611         struct weston_surface *surface, *prev;
2612
2613         ws = get_current_workspace(shell);
2614         wl_list_for_each_reverse_safe(surface, prev,
2615                                       &shell->fullscreen_layer.surface_list,
2616                                       layer_link)
2617                 weston_surface_restack(surface, &ws->layer.surface_list);
2618 }
2619
2620 static void
2621 activate(struct desktop_shell *shell, struct weston_surface *es,
2622          struct weston_seat *seat)
2623 {
2624         struct focus_state *state;
2625         struct workspace *ws;
2626
2627         weston_surface_activate(es, seat);
2628
2629         state = ensure_focus_state(shell, seat);
2630         if (state == NULL)
2631                 return;
2632
2633         state->keyboard_focus = es;
2634         wl_list_remove(&state->surface_destroy_listener.link);
2635         wl_signal_add(&es->surface.resource.destroy_signal,
2636                       &state->surface_destroy_listener);
2637
2638         switch (get_shell_surface_type(es)) {
2639         case SHELL_SURFACE_FULLSCREEN:
2640                 /* should on top of panels */
2641                 shell_stack_fullscreen(get_shell_surface(es));
2642                 shell_configure_fullscreen(get_shell_surface(es));
2643                 break;
2644         default:
2645                 ws = get_current_workspace(shell);
2646                 lower_fullscreen_layer(shell);
2647                 weston_surface_restack(es, &ws->layer.surface_list);
2648                 break;
2649         }
2650 }
2651
2652 /* no-op func for checking black surface */
2653 static void
2654 black_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy)
2655 {
2656 }
2657
2658 static bool
2659 is_black_surface (struct weston_surface *es, struct weston_surface **fs_surface)
2660 {
2661         if (es->configure == black_surface_configure) {
2662                 if (fs_surface)
2663                         *fs_surface = (struct weston_surface *)es->private;
2664                 return true;
2665         }
2666         return false;
2667 }
2668
2669 static void
2670 click_to_activate_binding(struct wl_seat *seat, uint32_t time, uint32_t button,
2671                           void *data)
2672 {
2673         struct weston_seat *ws = (struct weston_seat *) seat;
2674         struct desktop_shell *shell = data;
2675         struct weston_surface *focus;
2676         struct weston_surface *upper;
2677
2678         focus = (struct weston_surface *) seat->pointer->focus;
2679         if (!focus)
2680                 return;
2681
2682         if (is_black_surface(focus, &upper))
2683                 focus = upper;
2684
2685         if (get_shell_surface_type(focus) == SHELL_SURFACE_NONE)
2686                 return;
2687
2688         if (seat->pointer->grab == &seat->pointer->default_grab)
2689                 activate(shell, focus, ws);
2690 }
2691
2692 static void
2693 lock(struct wl_listener *listener, void *data)
2694 {
2695         struct desktop_shell *shell =
2696                 container_of(listener, struct desktop_shell, lock_listener);
2697         struct weston_output *output;
2698         struct workspace *ws = get_current_workspace(shell);
2699
2700         if (shell->locked) {
2701                 wl_list_for_each(output, &shell->compositor->output_list, link)
2702                         /* TODO: find a way to jump to other DPMS levels */
2703                         if (output->set_dpms)
2704                                 output->set_dpms(output, WESTON_DPMS_STANDBY);
2705                 return;
2706         }
2707
2708         shell->locked = true;
2709
2710         /* Hide all surfaces by removing the fullscreen, panel and
2711          * toplevel layers.  This way nothing else can show or receive
2712          * input events while we are locked. */
2713
2714         wl_list_remove(&shell->panel_layer.link);
2715         wl_list_remove(&shell->fullscreen_layer.link);
2716         if (shell->showing_input_panels)
2717                 wl_list_remove(&shell->input_panel_layer.link);
2718         wl_list_remove(&ws->layer.link);
2719         wl_list_insert(&shell->compositor->cursor_layer.link,
2720                        &shell->lock_layer.link);
2721
2722         launch_screensaver(shell);
2723
2724         /* TODO: disable bindings that should not work while locked. */
2725
2726         /* All this must be undone in resume_desktop(). */
2727 }
2728
2729 static void
2730 unlock(struct wl_listener *listener, void *data)
2731 {
2732         struct desktop_shell *shell =
2733                 container_of(listener, struct desktop_shell, unlock_listener);
2734
2735         if (!shell->locked || shell->lock_surface) {
2736                 weston_compositor_wake(shell->compositor);
2737                 return;
2738         }
2739
2740         /* If desktop-shell client has gone away, unlock immediately. */
2741         if (!shell->child.desktop_shell) {
2742                 resume_desktop(shell);
2743                 return;
2744         }
2745
2746         if (shell->prepare_event_sent)
2747                 return;
2748
2749         desktop_shell_send_prepare_lock_surface(shell->child.desktop_shell);
2750         shell->prepare_event_sent = true;
2751 }
2752
2753 static void
2754 show_input_panels(struct wl_listener *listener, void *data)
2755 {
2756         struct desktop_shell *shell =
2757                 container_of(listener, struct desktop_shell,
2758                              show_input_panel_listener);
2759         struct input_panel_surface *surface, *next;
2760         struct weston_surface *ws;
2761
2762         shell->showing_input_panels = true;
2763
2764         wl_list_insert(&shell->panel_layer.link,
2765                        &shell->input_panel_layer.link);
2766
2767         wl_list_for_each_safe(surface, next,
2768                               &shell->input_panel.surfaces, link) {
2769                 ws = surface->surface;
2770                 wl_list_insert(&shell->input_panel_layer.surface_list,
2771                                &ws->layer_link);
2772                 ws->geometry.dirty = 1;
2773                 weston_surface_update_transform(ws);
2774                 weston_surface_damage(ws);
2775                 weston_slide_run(ws, ws->geometry.height, 0, NULL, NULL);
2776         }
2777 }
2778
2779 static void
2780 hide_input_panels(struct wl_listener *listener, void *data)
2781 {
2782         struct desktop_shell *shell =
2783                 container_of(listener, struct desktop_shell,
2784                              hide_input_panel_listener);
2785         struct weston_surface *surface, *next;
2786
2787         shell->showing_input_panels = false;
2788
2789         wl_list_remove(&shell->input_panel_layer.link);
2790
2791         wl_list_for_each_safe(surface, next,
2792                               &shell->input_panel_layer.surface_list, layer_link)
2793                 weston_surface_unmap(surface);
2794 }
2795
2796 static void
2797 center_on_output(struct weston_surface *surface, struct weston_output *output)
2798 {
2799         float x = (output->width - surface->buffer->width) / 2;
2800         float y = (output->height - surface->buffer->height) / 2;
2801
2802         weston_surface_configure(surface, output->x + x, output->y + y,
2803                                  surface->buffer->width,
2804                                  surface->buffer->height);
2805 }
2806
2807 static void
2808 weston_surface_set_initial_position (struct weston_surface *surface,
2809                                      struct desktop_shell *shell)
2810 {
2811         struct weston_compositor *compositor = shell->compositor;
2812         int ix = 0, iy = 0;
2813         int range_x, range_y;
2814         int dx, dy, x, y, panel_height;
2815         struct weston_output *output, *target_output = NULL;
2816         struct weston_seat *seat;
2817
2818         /* As a heuristic place the new window on the same output as the
2819          * pointer. Falling back to the output containing 0, 0.
2820          *
2821          * TODO: Do something clever for touch too?
2822          */
2823         wl_list_for_each(seat, &compositor->seat_list, link) {
2824                 if (seat->has_pointer) {
2825                         ix = wl_fixed_to_int(seat->pointer.x);
2826                         iy = wl_fixed_to_int(seat->pointer.y);
2827                         break;
2828                 }
2829         }
2830
2831         wl_list_for_each(output, &compositor->output_list, link) {
2832                 if (pixman_region32_contains_point(&output->region, ix, iy, NULL)) {
2833                         target_output = output;
2834                         break;
2835                 }
2836         }
2837
2838         if (!target_output) {
2839                 weston_surface_set_position(surface, 10 + random() % 400,
2840                                            10 + random() % 400);
2841                 return;
2842         }
2843
2844         /* Valid range within output where the surface will still be onscreen.
2845          * If this is negative it means that the surface is bigger than
2846          * output.
2847          */
2848         panel_height = get_output_panel_height(shell, target_output);
2849         range_x = target_output->width - surface->geometry.width;
2850         range_y = (target_output->height - panel_height) -
2851                   surface->geometry.height;
2852
2853         if (range_x > 0)
2854                 dx = random() % range_x;
2855         else
2856                 dx = 0;
2857
2858         if (range_y > 0)
2859                 dy = panel_height + random() % range_y;
2860         else
2861                 dy = panel_height;
2862
2863         x = target_output->x + dx;
2864         y = target_output->y + dy;
2865
2866         weston_surface_set_position (surface, x, y);
2867 }
2868
2869 static void
2870 map(struct desktop_shell *shell, struct weston_surface *surface,
2871     int32_t width, int32_t height, int32_t sx, int32_t sy)
2872 {
2873         struct weston_compositor *compositor = shell->compositor;
2874         struct shell_surface *shsurf = get_shell_surface(surface);
2875         enum shell_surface_type surface_type = shsurf->type;
2876         struct weston_surface *parent;
2877         struct weston_seat *seat;
2878         struct workspace *ws;
2879         int panel_height = 0;
2880
2881         surface->geometry.width = width;
2882         surface->geometry.height = height;
2883         surface->geometry.dirty = 1;
2884
2885         /* initial positioning, see also configure() */
2886         switch (surface_type) {
2887         case SHELL_SURFACE_TOPLEVEL:
2888                 weston_surface_set_initial_position(surface, shell);
2889                 break;
2890         case SHELL_SURFACE_FULLSCREEN:
2891                 center_on_output(surface, shsurf->fullscreen_output);
2892                 shell_map_fullscreen(shsurf);
2893                 break;
2894         case SHELL_SURFACE_MAXIMIZED:
2895                 /* use surface configure to set the geometry */
2896                 panel_height = get_output_panel_height(shell,surface->output);
2897                 weston_surface_set_position(surface, shsurf->output->x,
2898                                             shsurf->output->y + panel_height);
2899                 break;
2900         case SHELL_SURFACE_POPUP:
2901                 shell_map_popup(shsurf);
2902         case SHELL_SURFACE_NONE:
2903                 weston_surface_set_position(surface,
2904                                             surface->geometry.x + sx,
2905                                             surface->geometry.y + sy);
2906                 break;
2907         default:
2908                 ;
2909         }
2910
2911         /* surface stacking order, see also activate() */
2912         switch (surface_type) {
2913         case SHELL_SURFACE_POPUP:
2914         case SHELL_SURFACE_TRANSIENT:
2915                 parent = shsurf->parent;
2916                 wl_list_insert(parent->layer_link.prev, &surface->layer_link);
2917                 break;
2918         case SHELL_SURFACE_FULLSCREEN:
2919         case SHELL_SURFACE_NONE:
2920                 break;
2921         default:
2922                 ws = get_current_workspace(shell);
2923                 wl_list_insert(&ws->layer.surface_list, &surface->layer_link);
2924                 break;
2925         }
2926
2927         if (surface_type != SHELL_SURFACE_NONE) {
2928                 weston_surface_update_transform(surface);
2929                 if (surface_type == SHELL_SURFACE_MAXIMIZED)
2930                         surface->output = shsurf->output;
2931         }
2932
2933         switch (surface_type) {
2934         case SHELL_SURFACE_TRANSIENT:
2935                 if (shsurf->transient.flags ==
2936                                 WL_SHELL_SURFACE_TRANSIENT_INACTIVE)
2937                         break;
2938         case SHELL_SURFACE_TOPLEVEL:
2939         case SHELL_SURFACE_FULLSCREEN:
2940         case SHELL_SURFACE_MAXIMIZED:
2941                 if (!shell->locked) {
2942                         wl_list_for_each(seat, &compositor->seat_list, link)
2943                                 activate(shell, surface, seat);
2944                 }
2945                 break;
2946         default:
2947                 break;
2948         }
2949
2950         if (surface_type == SHELL_SURFACE_TOPLEVEL)
2951         {
2952                 switch (shell->win_animation_type) {
2953                 case ANIMATION_FADE:
2954                         weston_fade_run(surface, NULL, NULL);
2955                         break;
2956                 case ANIMATION_ZOOM:
2957                         weston_zoom_run(surface, 0.8, 1.0, NULL, NULL);
2958                         break;
2959                 default:
2960                         break;
2961                 }
2962         }
2963 }
2964
2965 static void
2966 configure(struct desktop_shell *shell, struct weston_surface *surface,
2967           float x, float y, int32_t width, int32_t height)
2968 {
2969         enum shell_surface_type surface_type = SHELL_SURFACE_NONE;
2970         struct shell_surface *shsurf;
2971
2972         shsurf = get_shell_surface(surface);
2973         if (shsurf)
2974                 surface_type = shsurf->type;
2975
2976         surface->geometry.x = x;
2977         surface->geometry.y = y;
2978         surface->geometry.width = width;
2979         surface->geometry.height = height;
2980         surface->geometry.dirty = 1;
2981
2982         switch (surface_type) {
2983         case SHELL_SURFACE_FULLSCREEN:
2984                 shell_stack_fullscreen(shsurf);
2985                 shell_configure_fullscreen(shsurf);
2986                 break;
2987         case SHELL_SURFACE_MAXIMIZED:
2988                 /* setting x, y and using configure to change that geometry */
2989                 surface->geometry.x = surface->output->x;
2990                 surface->geometry.y = surface->output->y +
2991                         get_output_panel_height(shell,surface->output);
2992                 break;
2993         case SHELL_SURFACE_TOPLEVEL:
2994                 break;
2995         default:
2996                 break;
2997         }
2998
2999         /* XXX: would a fullscreen surface need the same handling? */
3000         if (surface->output) {
3001                 weston_surface_update_transform(surface);
3002
3003                 if (surface_type == SHELL_SURFACE_MAXIMIZED)
3004                         surface->output = shsurf->output;
3005         }
3006 }
3007
3008 static void
3009 shell_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy)
3010 {
3011         struct shell_surface *shsurf = get_shell_surface(es);
3012         struct desktop_shell *shell = shsurf->shell;
3013         int type_changed = 0;
3014
3015         if (shsurf->next_type != SHELL_SURFACE_NONE &&
3016             shsurf->type != shsurf->next_type) {
3017                 set_surface_type(shsurf);
3018                 type_changed = 1;
3019         }
3020
3021         if (!weston_surface_is_mapped(es)) {
3022                 map(shell, es, es->buffer->width, es->buffer->height, sx, sy);
3023         } else if (type_changed || sx != 0 || sy != 0 ||
3024                    es->geometry.width != es->buffer->width ||
3025                    es->geometry.height != es->buffer->height) {
3026                 float from_x, from_y;
3027                 float to_x, to_y;
3028
3029                 weston_surface_to_global_float(es, 0, 0, &from_x, &from_y);
3030                 weston_surface_to_global_float(es, sx, sy, &to_x, &to_y);
3031                 configure(shell, es,
3032                           es->geometry.x + to_x - from_x,
3033                           es->geometry.y + to_y - from_y,
3034                           es->buffer->width, es->buffer->height);
3035         }
3036 }
3037
3038 static void launch_desktop_shell_process(void *data);
3039
3040 static void
3041 desktop_shell_sigchld(struct weston_process *process, int status)
3042 {
3043         uint32_t time;
3044         struct desktop_shell *shell =
3045                 container_of(process, struct desktop_shell, child.process);
3046
3047         shell->child.process.pid = 0;
3048         shell->child.client = NULL; /* already destroyed by wayland */
3049
3050         /* if desktop-shell dies more than 5 times in 30 seconds, give up */
3051         time = weston_compositor_get_time();
3052         if (time - shell->child.deathstamp > 30000) {
3053                 shell->child.deathstamp = time;
3054                 shell->child.deathcount = 0;
3055         }
3056
3057         shell->child.deathcount++;
3058         if (shell->child.deathcount > 5) {
3059                 weston_log("weston-desktop-shell died, giving up.\n");
3060                 return;
3061         }
3062
3063         weston_log("weston-desktop-shell died, respawning...\n");
3064         launch_desktop_shell_process(shell);
3065 }
3066
3067 static void
3068 launch_desktop_shell_process(void *data)
3069 {
3070         struct desktop_shell *shell = data;
3071         const char *shell_exe = LIBEXECDIR "/weston-desktop-shell";
3072
3073         shell->child.client = weston_client_launch(shell->compositor,
3074                                                  &shell->child.process,
3075                                                  shell_exe,
3076                                                  desktop_shell_sigchld);
3077
3078         if (!shell->child.client)
3079                 weston_log("not able to start %s\n", shell_exe);
3080 }
3081
3082 static void
3083 bind_shell(struct wl_client *client, void *data, uint32_t version, uint32_t id)
3084 {
3085         struct desktop_shell *shell = data;
3086
3087         wl_client_add_object(client, &wl_shell_interface,
3088                              &shell_implementation, id, shell);
3089 }
3090
3091 static void
3092 unbind_desktop_shell(struct wl_resource *resource)
3093 {
3094         struct desktop_shell *shell = resource->data;
3095
3096         if (shell->locked)
3097                 resume_desktop(shell);
3098
3099         shell->child.desktop_shell = NULL;
3100         shell->prepare_event_sent = false;
3101         free(resource);
3102 }
3103
3104 static void
3105 bind_desktop_shell(struct wl_client *client,
3106                    void *data, uint32_t version, uint32_t id)
3107 {
3108         struct desktop_shell *shell = data;
3109         struct wl_resource *resource;
3110
3111         resource = wl_client_add_object(client, &desktop_shell_interface,
3112                                         &desktop_shell_implementation,
3113                                         id, shell);
3114
3115         if (client == shell->child.client) {
3116                 resource->destroy = unbind_desktop_shell;
3117                 shell->child.desktop_shell = resource;
3118                 return;
3119         }
3120
3121         wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
3122                                "permission to bind desktop_shell denied");
3123         wl_resource_destroy(resource);
3124 }
3125
3126 static void
3127 screensaver_configure(struct weston_surface *surface, int32_t sx, int32_t sy)
3128 {
3129         struct desktop_shell *shell = surface->private;
3130
3131         if (!shell->locked)
3132                 return;
3133
3134         center_on_output(surface, surface->output);
3135
3136         if (wl_list_empty(&surface->layer_link)) {
3137                 wl_list_insert(shell->lock_layer.surface_list.prev,
3138                                &surface->layer_link);
3139                 weston_surface_update_transform(surface);
3140                 shell->compositor->idle_time = shell->screensaver.duration;
3141                 weston_compositor_wake(shell->compositor);
3142                 shell->compositor->state = WESTON_COMPOSITOR_IDLE;
3143         }
3144 }
3145
3146 static void
3147 screensaver_set_surface(struct wl_client *client,
3148                         struct wl_resource *resource,
3149                         struct wl_resource *surface_resource,
3150                         struct wl_resource *output_resource)
3151 {
3152         struct desktop_shell *shell = resource->data;
3153         struct weston_surface *surface = surface_resource->data;
3154         struct weston_output *output = output_resource->data;
3155
3156         surface->configure = screensaver_configure;
3157         surface->private = shell;
3158         surface->output = output;
3159 }
3160
3161 static const struct screensaver_interface screensaver_implementation = {
3162         screensaver_set_surface
3163 };
3164
3165 static void
3166 unbind_screensaver(struct wl_resource *resource)
3167 {
3168         struct desktop_shell *shell = resource->data;
3169
3170         shell->screensaver.binding = NULL;
3171         free(resource);
3172 }
3173
3174 static void
3175 bind_screensaver(struct wl_client *client,
3176                  void *data, uint32_t version, uint32_t id)
3177 {
3178         struct desktop_shell *shell = data;
3179         struct wl_resource *resource;
3180
3181         resource = wl_client_add_object(client, &screensaver_interface,
3182                                         &screensaver_implementation,
3183                                         id, shell);
3184
3185         if (shell->screensaver.binding == NULL) {
3186                 resource->destroy = unbind_screensaver;
3187                 shell->screensaver.binding = resource;
3188                 return;
3189         }
3190
3191         wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
3192                                "interface object already bound");
3193         wl_resource_destroy(resource);
3194 }
3195
3196 static void
3197 input_panel_configure(struct weston_surface *surface, int32_t sx, int32_t sy)
3198 {
3199         struct weston_mode *mode = surface->output->current;
3200         float x = (mode->width - surface->buffer->width) / 2;
3201         float y = mode->height - surface->buffer->height;
3202
3203         /* Don't map the input panel here, wait for
3204          * show_input_panels signal. */
3205
3206         weston_surface_configure(surface,
3207                                  surface->output->x + x,
3208                                  surface->output->y + y,
3209                                  surface->buffer->width,
3210                                  surface->buffer->height);
3211 }
3212
3213 static void
3214 destroy_input_panel_surface(struct wl_listener *listener,
3215                             void *data)
3216 {
3217         struct input_panel_surface *input_panel_surface =
3218                 container_of(listener, struct input_panel_surface, listener);
3219
3220         wl_list_remove(&listener->link);
3221         wl_list_remove(&input_panel_surface->link);
3222
3223         free(input_panel_surface);
3224 }
3225
3226 static void
3227 input_panel_set_surface(struct wl_client *client,
3228                         struct wl_resource *resource,
3229                         struct wl_resource *surface_resource,
3230                         struct wl_resource *output_resource)
3231 {
3232         struct desktop_shell *shell = resource->data;
3233         struct weston_surface *surface = surface_resource->data;
3234         struct weston_output *output = output_resource->data;
3235         struct input_panel_surface *input_panel_surface;
3236
3237         surface->configure = input_panel_configure;
3238         surface->private = shell;
3239         surface->output = output;
3240
3241         input_panel_surface = malloc(sizeof *input_panel_surface);
3242         if (!input_panel_surface) {
3243                 wl_resource_post_no_memory(resource);
3244                 return;
3245         }
3246
3247         input_panel_surface->surface = surface;
3248         input_panel_surface->listener.notify = destroy_input_panel_surface;
3249
3250         wl_signal_add(&surface_resource->destroy_signal,
3251                       &input_panel_surface->listener);
3252
3253         wl_list_insert(&shell->input_panel.surfaces,
3254                        &input_panel_surface->link);
3255 }
3256
3257 static const struct input_panel_interface input_panel_implementation = {
3258         input_panel_set_surface
3259 };
3260
3261 static void
3262 unbind_input_panel(struct wl_resource *resource)
3263 {
3264         struct desktop_shell *shell = resource->data;
3265
3266         shell->input_panel.binding = NULL;
3267         free(resource);
3268 }
3269
3270 static void
3271 bind_input_panel(struct wl_client *client,
3272               void *data, uint32_t version, uint32_t id)
3273 {
3274         struct desktop_shell *shell = data;
3275         struct wl_resource *resource;
3276
3277         resource = wl_client_add_object(client, &input_panel_interface,
3278                                         &input_panel_implementation,
3279                                         id, shell);
3280
3281         if (shell->input_panel.binding == NULL) {
3282                 resource->destroy = unbind_input_panel;
3283                 shell->input_panel.binding = resource;
3284                 return;
3285         }
3286
3287         wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
3288                                "interface object already bound");
3289         wl_resource_destroy(resource);
3290 }
3291
3292 struct switcher {
3293         struct desktop_shell *shell;
3294         struct weston_surface *current;
3295         struct wl_listener listener;
3296         struct wl_keyboard_grab grab;
3297 };
3298
3299 static void
3300 switcher_next(struct switcher *switcher)
3301 {
3302         struct weston_surface *surface;
3303         struct weston_surface *first = NULL, *prev = NULL, *next = NULL;
3304         struct shell_surface *shsurf;
3305         struct workspace *ws = get_current_workspace(switcher->shell);
3306
3307         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
3308                 switch (get_shell_surface_type(surface)) {
3309                 case SHELL_SURFACE_TOPLEVEL:
3310                 case SHELL_SURFACE_FULLSCREEN:
3311                 case SHELL_SURFACE_MAXIMIZED:
3312                         if (first == NULL)
3313                                 first = surface;
3314                         if (prev == switcher->current)
3315                                 next = surface;
3316                         prev = surface;
3317                         surface->alpha = 0.25;
3318                         surface->geometry.dirty = 1;
3319                         weston_surface_damage(surface);
3320                         break;
3321                 default:
3322                         break;
3323                 }
3324
3325                 if (is_black_surface(surface, NULL)) {
3326                         surface->alpha = 0.25;
3327                         surface->geometry.dirty = 1;
3328                         weston_surface_damage(surface);
3329                 }
3330         }
3331
3332         if (next == NULL)
3333                 next = first;
3334
3335         if (next == NULL)
3336                 return;
3337
3338         wl_list_remove(&switcher->listener.link);
3339         wl_signal_add(&next->surface.resource.destroy_signal,
3340                       &switcher->listener);
3341
3342         switcher->current = next;
3343         next->alpha = 1.0;
3344
3345         shsurf = get_shell_surface(switcher->current);
3346         if (shsurf && shsurf->type ==SHELL_SURFACE_FULLSCREEN)
3347                 shsurf->fullscreen.black_surface->alpha = 1.0;
3348 }
3349
3350 static void
3351 switcher_handle_surface_destroy(struct wl_listener *listener, void *data)
3352 {
3353         struct switcher *switcher =
3354                 container_of(listener, struct switcher, listener);
3355
3356         switcher_next(switcher);
3357 }
3358
3359 static void
3360 switcher_destroy(struct switcher *switcher)
3361 {
3362         struct weston_surface *surface;
3363         struct wl_keyboard *keyboard = switcher->grab.keyboard;
3364         struct workspace *ws = get_current_workspace(switcher->shell);
3365
3366         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
3367                 surface->alpha = 1.0;
3368                 weston_surface_damage(surface);
3369         }
3370
3371         if (switcher->current)
3372                 activate(switcher->shell, switcher->current,
3373                          (struct weston_seat *) keyboard->seat);
3374         wl_list_remove(&switcher->listener.link);
3375         wl_keyboard_end_grab(keyboard);
3376         free(switcher);
3377 }
3378
3379 static void
3380 switcher_key(struct wl_keyboard_grab *grab,
3381              uint32_t time, uint32_t key, uint32_t state_w)
3382 {
3383         struct switcher *switcher = container_of(grab, struct switcher, grab);
3384         enum wl_keyboard_key_state state = state_w;
3385
3386         if (key == KEY_TAB && state == WL_KEYBOARD_KEY_STATE_PRESSED)
3387                 switcher_next(switcher);
3388 }
3389
3390 static void
3391 switcher_modifier(struct wl_keyboard_grab *grab, uint32_t serial,
3392                   uint32_t mods_depressed, uint32_t mods_latched,
3393                   uint32_t mods_locked, uint32_t group)
3394 {
3395         struct switcher *switcher = container_of(grab, struct switcher, grab);
3396         struct weston_seat *seat = (struct weston_seat *) grab->keyboard->seat;
3397
3398         if ((seat->modifier_state & switcher->shell->binding_modifier) == 0)
3399                 switcher_destroy(switcher);
3400 }
3401
3402 static const struct wl_keyboard_grab_interface switcher_grab = {
3403         switcher_key,
3404         switcher_modifier,
3405 };
3406
3407 static void
3408 switcher_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
3409                  void *data)
3410 {
3411         struct desktop_shell *shell = data;
3412         struct switcher *switcher;
3413
3414         switcher = malloc(sizeof *switcher);
3415         switcher->shell = shell;
3416         switcher->current = NULL;
3417         switcher->listener.notify = switcher_handle_surface_destroy;
3418         wl_list_init(&switcher->listener.link);
3419
3420         lower_fullscreen_layer(switcher->shell);
3421         switcher->grab.interface = &switcher_grab;
3422         wl_keyboard_start_grab(seat->keyboard, &switcher->grab);
3423         wl_keyboard_set_focus(seat->keyboard, NULL);
3424         switcher_next(switcher);
3425 }
3426
3427 static void
3428 backlight_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
3429                   void *data)
3430 {
3431         struct weston_compositor *compositor = data;
3432         struct weston_output *output;
3433         long backlight_new = 0;
3434
3435         /* TODO: we're limiting to simple use cases, where we assume just
3436          * control on the primary display. We'd have to extend later if we
3437          * ever get support for setting backlights on random desktop LCD
3438          * panels though */
3439         output = get_default_output(compositor);
3440         if (!output)
3441                 return;
3442
3443         if (!output->set_backlight)
3444                 return;
3445
3446         if (key == KEY_F9 || key == KEY_BRIGHTNESSDOWN)
3447                 backlight_new = output->backlight_current - 25;
3448         else if (key == KEY_F10 || key == KEY_BRIGHTNESSUP)
3449                 backlight_new = output->backlight_current + 25;
3450
3451         if (backlight_new < 5)
3452                 backlight_new = 5;
3453         if (backlight_new > 255)
3454                 backlight_new = 255;
3455
3456         output->backlight_current = backlight_new;
3457         output->set_backlight(output, output->backlight_current);
3458 }
3459
3460 static void
3461 debug_repaint_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
3462                       void *data)
3463 {
3464         struct desktop_shell *shell = data;
3465         struct weston_compositor *compositor = shell->compositor;
3466         struct weston_surface *surface;
3467         struct weston_plane plane;
3468
3469         if (shell->debug_repaint_surface) {
3470                 weston_surface_destroy(shell->debug_repaint_surface);
3471                 shell->debug_repaint_surface = NULL;
3472         } else {
3473                 surface = weston_surface_create(compositor);
3474                 weston_surface_set_color(surface, 1.0, 0.0, 0.0, 0.2);
3475                 weston_surface_configure(surface, 0, 0, 8192, 8192);
3476                 wl_list_insert(&compositor->fade_layer.surface_list,
3477                                &surface->layer_link);
3478                 pixman_region32_init(&surface->input);
3479
3480                 /* Here's the dirty little trick that makes the
3481                  * repaint debugging work: we move the surface to a
3482                  * different plane and force an update_transform to
3483                  * update dependent state and clear the
3484                  * geometry.dirty bit.  This way the call to
3485                  * damage_below() in update_transform() does not
3486                  * add damage to the primary plane.  */
3487
3488                 weston_plane_init(&plane, 0, 0);
3489                 surface->plane = &plane;
3490                 weston_surface_update_transform(surface);
3491                 shell->debug_repaint_surface = surface;
3492                 surface->plane = &compositor->primary_plane;
3493                 weston_plane_release(&plane);
3494         }
3495 }
3496
3497
3498 static void
3499 fan_debug_repaint_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
3500                       void *data)
3501 {
3502         struct desktop_shell *shell = data;
3503         struct weston_compositor *compositor = shell->compositor;
3504         compositor->fan_debug = !compositor->fan_debug;
3505         weston_compositor_damage_all(compositor);
3506 }
3507
3508 static void
3509 force_kill_binding(struct wl_seat *seat, uint32_t time, uint32_t key,
3510                    void *data)
3511 {
3512         struct wl_surface *focus_surface;
3513         struct wl_client *client;
3514         struct desktop_shell *shell = data;
3515         struct weston_compositor *compositor = shell->compositor;
3516         pid_t pid;
3517
3518         focus_surface = seat->keyboard->focus;
3519         if (!focus_surface)
3520                 return;
3521
3522         wl_signal_emit(&compositor->kill_signal, focus_surface);
3523
3524         client = focus_surface->resource.client;
3525         wl_client_get_credentials(client, &pid, NULL, NULL);
3526
3527         /* Skip clients that we launched ourselves (the credentials of
3528          * the socketpair is ours) */
3529         if (pid == getpid())
3530                 return;
3531
3532         kill(pid, SIGKILL);
3533 }
3534
3535 static void
3536 workspace_up_binding(struct wl_seat *seat, uint32_t time,
3537                      uint32_t key, void *data)
3538 {
3539         struct desktop_shell *shell = data;
3540         unsigned int new_index = shell->workspaces.current;
3541
3542         if (shell->locked)
3543                 return;
3544         if (new_index != 0)
3545                 new_index--;
3546
3547         change_workspace(shell, new_index);
3548 }
3549
3550 static void
3551 workspace_down_binding(struct wl_seat *seat, uint32_t time,
3552                        uint32_t key, void *data)
3553 {
3554         struct desktop_shell *shell = data;
3555         unsigned int new_index = shell->workspaces.current;
3556
3557         if (shell->locked)
3558                 return;
3559         if (new_index < shell->workspaces.num - 1)
3560                 new_index++;
3561
3562         change_workspace(shell, new_index);
3563 }
3564
3565 static void
3566 workspace_f_binding(struct wl_seat *seat, uint32_t time,
3567                     uint32_t key, void *data)
3568 {
3569         struct desktop_shell *shell = data;
3570         unsigned int new_index;
3571
3572         if (shell->locked)
3573                 return;
3574         new_index = key - KEY_F1;
3575         if (new_index >= shell->workspaces.num)
3576                 new_index = shell->workspaces.num - 1;
3577
3578         change_workspace(shell, new_index);
3579 }
3580
3581 static void
3582 workspace_move_surface_up_binding(struct wl_seat *seat, uint32_t time,
3583                                   uint32_t key, void *data)
3584 {
3585         struct desktop_shell *shell = data;
3586         unsigned int new_index = shell->workspaces.current;
3587
3588         if (shell->locked)
3589                 return;
3590
3591         if (new_index != 0)
3592                 new_index--;
3593
3594         take_surface_to_workspace_by_seat(shell, seat, new_index);
3595 }
3596
3597 static void
3598 workspace_move_surface_down_binding(struct wl_seat *seat, uint32_t time,
3599                                     uint32_t key, void *data)
3600 {
3601         struct desktop_shell *shell = data;
3602         unsigned int new_index = shell->workspaces.current;
3603
3604         if (shell->locked)
3605                 return;
3606
3607         if (new_index < shell->workspaces.num - 1)
3608                 new_index++;
3609
3610         take_surface_to_workspace_by_seat(shell, seat, new_index);
3611 }
3612
3613 static void
3614 shell_destroy(struct wl_listener *listener, void *data)
3615 {
3616         struct desktop_shell *shell =
3617                 container_of(listener, struct desktop_shell, destroy_listener);
3618         struct workspace **ws;
3619
3620         if (shell->child.client)
3621                 wl_client_destroy(shell->child.client);
3622
3623         wl_list_remove(&shell->lock_listener.link);
3624         wl_list_remove(&shell->unlock_listener.link);
3625         wl_list_remove(&shell->show_input_panel_listener.link);
3626         wl_list_remove(&shell->hide_input_panel_listener.link);
3627
3628         wl_array_for_each(ws, &shell->workspaces.array)
3629                 workspace_destroy(*ws);
3630         wl_array_release(&shell->workspaces.array);
3631
3632         free(shell->screensaver.path);
3633         free(shell);
3634 }
3635
3636 static void
3637 shell_add_bindings(struct weston_compositor *ec, struct desktop_shell *shell)
3638 {
3639         uint32_t mod;
3640         int i, num_workspace_bindings;
3641
3642         /* fixed bindings */
3643         weston_compositor_add_key_binding(ec, KEY_BACKSPACE,
3644                                           MODIFIER_CTRL | MODIFIER_ALT,
3645                                           terminate_binding, ec);
3646         weston_compositor_add_button_binding(ec, BTN_LEFT, 0,
3647                                              click_to_activate_binding,
3648                                              shell);
3649         weston_compositor_add_axis_binding(ec, WL_POINTER_AXIS_VERTICAL_SCROLL,
3650                                            MODIFIER_SUPER | MODIFIER_ALT,
3651                                            surface_opacity_binding, NULL);
3652         weston_compositor_add_axis_binding(ec, WL_POINTER_AXIS_VERTICAL_SCROLL,
3653                                            MODIFIER_SUPER, zoom_axis_binding,
3654                                            NULL);
3655
3656         /* configurable bindings */
3657         mod = shell->binding_modifier;
3658         weston_compositor_add_key_binding(ec, KEY_PAGEUP, mod,
3659                                           zoom_key_binding, NULL);
3660         weston_compositor_add_key_binding(ec, KEY_PAGEDOWN, mod,
3661                                           zoom_key_binding, NULL);
3662         weston_compositor_add_button_binding(ec, BTN_LEFT, mod, move_binding,
3663                                              shell);
3664         weston_compositor_add_button_binding(ec, BTN_MIDDLE, mod,
3665                                              resize_binding, shell);
3666         weston_compositor_add_button_binding(ec, BTN_RIGHT, mod,
3667                                              rotate_binding, NULL);
3668         weston_compositor_add_key_binding(ec, KEY_TAB, mod, switcher_binding,
3669                                           shell);
3670         weston_compositor_add_key_binding(ec, KEY_F9, mod, backlight_binding,
3671                                           ec);
3672         weston_compositor_add_key_binding(ec, KEY_BRIGHTNESSDOWN, 0,
3673                                           backlight_binding, ec);
3674         weston_compositor_add_key_binding(ec, KEY_F10, mod, backlight_binding,
3675                                           ec);
3676         weston_compositor_add_key_binding(ec, KEY_BRIGHTNESSUP, 0,
3677                                           backlight_binding, ec);
3678         weston_compositor_add_key_binding(ec, KEY_SPACE, mod | MODIFIER_SHIFT,
3679                                           debug_repaint_binding, shell);
3680         weston_compositor_add_key_binding(ec, KEY_SPACE, mod | MODIFIER_ALT,
3681                                           fan_debug_repaint_binding, shell);
3682         weston_compositor_add_key_binding(ec, KEY_K, mod,
3683                                           force_kill_binding, shell);
3684         weston_compositor_add_key_binding(ec, KEY_UP, mod,
3685                                           workspace_up_binding, shell);
3686         weston_compositor_add_key_binding(ec, KEY_DOWN, mod,
3687                                           workspace_down_binding, shell);
3688         weston_compositor_add_key_binding(ec, KEY_UP, mod | MODIFIER_SHIFT,
3689                                           workspace_move_surface_up_binding,
3690                                           shell);
3691         weston_compositor_add_key_binding(ec, KEY_DOWN, mod | MODIFIER_SHIFT,
3692                                           workspace_move_surface_down_binding,
3693                                           shell);
3694
3695         /* Add bindings for mod+F[1-6] for workspace 1 to 6. */
3696         if (shell->workspaces.num > 1) {
3697                 num_workspace_bindings = shell->workspaces.num;
3698                 if (num_workspace_bindings > 6)
3699                         num_workspace_bindings = 6;
3700                 for (i = 0; i < num_workspace_bindings; i++)
3701                         weston_compositor_add_key_binding(ec, KEY_F1 + i, mod,
3702                                                           workspace_f_binding,
3703                                                           shell);
3704         }
3705 }
3706
3707 WL_EXPORT int
3708 module_init(struct weston_compositor *ec)
3709 {
3710         struct weston_seat *seat;
3711         struct desktop_shell *shell;
3712         struct workspace **pws;
3713         unsigned int i;
3714         struct wl_event_loop *loop;
3715
3716         shell = malloc(sizeof *shell);
3717         if (shell == NULL)
3718                 return -1;
3719
3720         memset(shell, 0, sizeof *shell);
3721         shell->compositor = ec;
3722
3723         shell->destroy_listener.notify = shell_destroy;
3724         wl_signal_add(&ec->destroy_signal, &shell->destroy_listener);
3725         shell->lock_listener.notify = lock;
3726         wl_signal_add(&ec->lock_signal, &shell->lock_listener);
3727         shell->unlock_listener.notify = unlock;
3728         wl_signal_add(&ec->unlock_signal, &shell->unlock_listener);
3729         shell->show_input_panel_listener.notify = show_input_panels;
3730         wl_signal_add(&ec->show_input_panel_signal, &shell->show_input_panel_listener);
3731         shell->hide_input_panel_listener.notify = hide_input_panels;
3732         wl_signal_add(&ec->hide_input_panel_signal, &shell->hide_input_panel_listener);
3733         ec->ping_handler = ping_handler;
3734         ec->shell_interface.shell = shell;
3735         ec->shell_interface.create_shell_surface = create_shell_surface;
3736         ec->shell_interface.set_toplevel = set_toplevel;
3737         ec->shell_interface.set_transient = set_transient;
3738         ec->shell_interface.move = surface_move;
3739         ec->shell_interface.resize = surface_resize;
3740
3741         wl_list_init(&shell->screensaver.surfaces);
3742         wl_list_init(&shell->input_panel.surfaces);
3743
3744         weston_layer_init(&shell->fullscreen_layer, &ec->cursor_layer.link);
3745         weston_layer_init(&shell->panel_layer, &shell->fullscreen_layer.link);
3746         weston_layer_init(&shell->background_layer, &shell->panel_layer.link);
3747         weston_layer_init(&shell->lock_layer, NULL);
3748         weston_layer_init(&shell->input_panel_layer, NULL);
3749
3750         wl_array_init(&shell->workspaces.array);
3751         wl_list_init(&shell->workspaces.client_list);
3752
3753         shell_configuration(shell);
3754
3755         for (i = 0; i < shell->workspaces.num; i++) {
3756                 pws = wl_array_add(&shell->workspaces.array, sizeof *pws);
3757                 if (pws == NULL)
3758                         return -1;
3759
3760                 *pws = workspace_create();
3761                 if (*pws == NULL)
3762                         return -1;
3763         }
3764         activate_workspace(shell, 0);
3765
3766         wl_list_init(&shell->workspaces.anim_sticky_list);
3767         wl_list_init(&shell->workspaces.animation.link);
3768         shell->workspaces.animation.frame = animate_workspace_change_frame;
3769
3770         if (wl_display_add_global(ec->wl_display, &wl_shell_interface,
3771                                   shell, bind_shell) == NULL)
3772                 return -1;
3773
3774         if (wl_display_add_global(ec->wl_display,
3775                                   &desktop_shell_interface,
3776                                   shell, bind_desktop_shell) == NULL)
3777                 return -1;
3778
3779         if (wl_display_add_global(ec->wl_display, &screensaver_interface,
3780                                   shell, bind_screensaver) == NULL)
3781                 return -1;
3782
3783         if (wl_display_add_global(ec->wl_display, &input_panel_interface,
3784                                   shell, bind_input_panel) == NULL)
3785                 return -1;
3786
3787         if (wl_display_add_global(ec->wl_display, &workspace_manager_interface,
3788                                   shell, bind_workspace_manager) == NULL)
3789                 return -1;
3790
3791         shell->child.deathstamp = weston_compositor_get_time();
3792
3793         loop = wl_display_get_event_loop(ec->wl_display);
3794         wl_event_loop_add_idle(loop, launch_desktop_shell_process, shell);
3795
3796         wl_list_for_each(seat, &ec->seat_list, link)
3797                 create_pointer_focus_listener(seat);
3798
3799         shell_add_bindings(ec, shell);
3800
3801         return 0;
3802 }