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 "config.h"
  25
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <stdbool.h>
  29 #include <string.h>
  30 #include <unistd.h>
  31 #include <linux/input.h>
  32 #include <assert.h>
  33 #include <signal.h>
  34 #include <math.h>
  35 #include <sys/types.h>
  36
  37 #include "compositor.h"
  38 #include "desktop-shell-server-protocol.h"
  39 #include "input-method-server-protocol.h"
  40 #include "workspaces-server-protocol.h"
  41 #include "../shared/config-parser.h"
  42
  43 #define DEFAULT_NUM_WORKSPACES 1
  44 #define DEFAULT_WORKSPACE_CHANGE_ANIMATION_LENGTH 200
  45
  46 enum animation_type {
  47         ANIMATION_NONE,
  48
  49         ANIMATION_ZOOM,
  50         ANIMATION_FADE
  51 };
  52
  53 enum fade_type {
  54         FADE_IN,
  55         FADE_OUT
  56 };
  57
  58 struct focus_state {
  59         struct weston_seat *seat;
  60         struct workspace *ws;
  61         struct weston_surface *keyboard_focus;
  62         struct wl_list link;
  63         struct wl_listener seat_destroy_listener;
  64         struct wl_listener surface_destroy_listener;
  65 };
  66
  67 struct workspace {
  68         struct weston_layer layer;
  69
  70         struct wl_list focus_list;
  71         struct wl_listener seat_destroyed_listener;
  72 };
  73
  74 struct input_panel_surface {
  75         struct wl_resource *resource;
  76         struct wl_signal destroy_signal;
  77
  78         struct desktop_shell *shell;
  79
  80         struct wl_list link;
  81         struct weston_surface *surface;
  82         struct wl_listener surface_destroy_listener;
  83
  84         struct weston_output *output;
  85         uint32_t panel;
  86 };
  87
  88 struct desktop_shell {
  89         struct weston_compositor *compositor;
  90
  91         struct wl_listener idle_listener;
  92         struct wl_listener wake_listener;
  93         struct wl_listener destroy_listener;
  94         struct wl_listener show_input_panel_listener;
  95         struct wl_listener hide_input_panel_listener;
  96         struct wl_listener update_input_panel_listener;
  97
  98         struct weston_layer fullscreen_layer;
  99         struct weston_layer panel_layer;
 100         struct weston_layer background_layer;
 101         struct weston_layer lock_layer;
 102         struct weston_layer input_panel_layer;
 103
 104         struct wl_listener pointer_focus_listener;
 105         struct weston_surface *grab_surface;
 106
 107         struct {
 108                 struct weston_process process;
 109                 struct wl_client *client;
 110                 struct wl_resource *desktop_shell;
 111
 112                 unsigned deathcount;
 113                 uint32_t deathstamp;
 114         } child;
 115
 116         bool locked;
 117         bool showing_input_panels;
 118         bool prepare_event_sent;
 119
 120         struct {
 121                 struct weston_surface *surface;
 122                 pixman_box32_t cursor_rectangle;
 123         } text_input;
 124
 125         struct weston_surface *lock_surface;
 126         struct wl_listener lock_surface_listener;
 127
 128         struct {
 129                 struct wl_array array;
 130                 unsigned int current;
 131                 unsigned int num;
 132
 133                 struct wl_list client_list;
 134
 135                 struct weston_animation animation;
 136                 struct wl_list anim_sticky_list;
 137                 int anim_dir;
 138                 uint32_t anim_timestamp;
 139                 double anim_current;
 140                 struct workspace *anim_from;
 141                 struct workspace *anim_to;
 142         } workspaces;
 143
 144         struct {
 145                 char *path;
 146                 int duration;
 147                 struct wl_resource *binding;
 148                 struct weston_process process;
 149                 struct wl_event_source *timer;
 150         } screensaver;
 151
 152         struct {
 153                 struct wl_resource *binding;
 154                 struct wl_list surfaces;
 155         } input_panel;
 156
 157         struct {
 158                 struct weston_surface *surface;
 159                 struct weston_surface_animation *animation;
 160                 enum fade_type type;
 161                 struct wl_event_source *startup_timer;
 162         } fade;
 163
 164         uint32_t binding_modifier;
 165         enum animation_type win_animation_type;
 166 };
 167
 168 enum shell_surface_type {
 169         SHELL_SURFACE_NONE,
 170         SHELL_SURFACE_TOPLEVEL,
 171         SHELL_SURFACE_TRANSIENT,
 172         SHELL_SURFACE_FULLSCREEN,
 173         SHELL_SURFACE_MAXIMIZED,
 174         SHELL_SURFACE_POPUP,
 175         SHELL_SURFACE_XWAYLAND
 176 };
 177
 178 struct ping_timer {
 179         struct wl_event_source *source;
 180         uint32_t serial;
 181 };
 182
 183 struct shell_surface {
 184         struct wl_resource *resource;
 185         struct wl_signal destroy_signal;
 186
 187         struct weston_surface *surface;
 188         struct wl_listener surface_destroy_listener;
 189         struct weston_surface *parent;
 190         struct desktop_shell *shell;
 191
 192         enum shell_surface_type type, next_type;
 193         char *title, *class;
 194         int32_t saved_x, saved_y;
 195         bool saved_position_valid;
 196         bool saved_rotation_valid;
 197         int unresponsive;
 198
 199         struct {
 200                 struct weston_transform transform;
 201                 struct weston_matrix rotation;
 202         } rotation;
 203
 204         struct {
 205                 struct wl_list grab_link;
 206                 int32_t x, y;
 207                 struct shell_seat *shseat;
 208                 uint32_t serial;
 209         } popup;
 210
 211         struct {
 212                 int32_t x, y;
 213                 uint32_t flags;
 214         } transient;
 215
 216         struct {
 217                 enum wl_shell_surface_fullscreen_method type;
 218                 struct weston_transform transform; /* matrix from x, y */
 219                 uint32_t framerate;
 220                 struct weston_surface *black_surface;
 221         } fullscreen;
 222
 223         struct ping_timer *ping_timer;
 224
 225         struct weston_transform workspace_transform;
 226
 227         struct weston_output *fullscreen_output;
 228         struct weston_output *output;
 229         struct wl_list link;
 230
 231         const struct weston_shell_client *client;
 232 };
 233
 234 struct shell_grab {
 235         struct weston_pointer_grab grab;
 236         struct shell_surface *shsurf;
 237         struct wl_listener shsurf_destroy_listener;
 238 };
 239
 240 struct shell_touch_grab {
 241         struct weston_touch_grab grab;
 242         struct shell_surface *shsurf;
 243         struct wl_listener shsurf_destroy_listener;
 244         struct weston_touch *touch;
 245 };
 246
 247 struct weston_move_grab {
 248         struct shell_grab base;
 249         wl_fixed_t dx, dy;
 250 };
 251
 252 struct weston_touch_move_grab {
 253         struct shell_touch_grab base;
 254         wl_fixed_t dx, dy;
 255 };
 256
 257 struct rotate_grab {
 258         struct shell_grab base;
 259         struct weston_matrix rotation;
 260         struct {
 261                 float x;
 262                 float y;
 263         } center;
 264 };
 265
 266 struct shell_seat {
 267         struct weston_seat *seat;
 268         struct wl_listener seat_destroy_listener;
 269
 270         struct {
 271                 struct weston_pointer_grab grab;
 272                 struct wl_list surfaces_list;
 273                 struct wl_client *client;
 274                 int32_t initial_up;
 275         } popup_grab;
 276 };
 277
 278 static void
 279 activate(struct desktop_shell *shell, struct weston_surface *es,
 280          struct weston_seat *seat);
 281
 282 static struct workspace *
 283 get_current_workspace(struct desktop_shell *shell);
 284
 285 static struct shell_surface *
 286 get_shell_surface(struct weston_surface *surface);
 287
 288 static struct desktop_shell *
 289 shell_surface_get_shell(struct shell_surface *shsurf);
 290
 291 static void
 292 surface_rotate(struct shell_surface *surface, struct weston_seat *seat);
 293
 294 static void
 295 shell_fade_startup(struct desktop_shell *shell);
 296
 297 static bool
 298 shell_surface_is_top_fullscreen(struct shell_surface *shsurf)
 299 {
 300         struct desktop_shell *shell;
 301         struct weston_surface *top_fs_es;
 302
 303         shell = shell_surface_get_shell(shsurf);
 304
 305         if (wl_list_empty(&shell->fullscreen_layer.surface_list))
 306                 return false;
 307
 308         top_fs_es = container_of(shell->fullscreen_layer.surface_list.next,
 309                                  struct weston_surface,
 310                                  layer_link);
 311         return (shsurf == get_shell_surface(top_fs_es));
 312 }
 313
 314 static void
 315 destroy_shell_grab_shsurf(struct wl_listener *listener, void *data)
 316 {
 317         struct shell_grab *grab;
 318
 319         grab = container_of(listener, struct shell_grab,
 320                             shsurf_destroy_listener);
 321
 322         grab->shsurf = NULL;
 323 }
 324
 325 static void
 326 popup_grab_end(struct weston_pointer *pointer);
 327
 328 static void
 329 shell_grab_start(struct shell_grab *grab,
 330                  const struct weston_pointer_grab_interface *interface,
 331                  struct shell_surface *shsurf,
 332                  struct weston_pointer *pointer,
 333                  enum desktop_shell_cursor cursor)
 334 {
 335         struct desktop_shell *shell = shsurf->shell;
 336
 337         popup_grab_end(pointer);
 338
 339         grab->grab.interface = interface;
 340         grab->shsurf = shsurf;
 341         grab->shsurf_destroy_listener.notify = destroy_shell_grab_shsurf;
 342         wl_signal_add(&shsurf->destroy_signal,
 343                       &grab->shsurf_destroy_listener);
 344
 345         weston_pointer_start_grab(pointer, &grab->grab);
 346         if (shell->child.desktop_shell) {
 347                 desktop_shell_send_grab_cursor(shell->child.desktop_shell,
 348                                                cursor);
 349                 weston_pointer_set_focus(pointer, shell->grab_surface,
 350                                          wl_fixed_from_int(0),
 351                                          wl_fixed_from_int(0));
 352         }
 353 }
 354
 355 static void
 356 shell_grab_end(struct shell_grab *grab)
 357 {
 358         if (grab->shsurf)
 359                 wl_list_remove(&grab->shsurf_destroy_listener.link);
 360
 361         weston_pointer_end_grab(grab->grab.pointer);
 362 }
 363
 364 static void
 365 shell_touch_grab_start(struct shell_touch_grab *grab,
 366                        const struct weston_touch_grab_interface *interface,
 367                        struct shell_surface *shsurf,
 368                        struct weston_touch *touch)
 369 {
 370         struct desktop_shell *shell = shsurf->shell;
 371
 372         grab->grab.interface = interface;
 373         grab->shsurf = shsurf;
 374         grab->shsurf_destroy_listener.notify = destroy_shell_grab_shsurf;
 375         wl_signal_add(&shsurf->destroy_signal,
 376                       &grab->shsurf_destroy_listener);
 377
 378         grab->touch = touch;
 379
 380         weston_touch_start_grab(touch, &grab->grab);
 381         if (shell->child.desktop_shell)
 382                 weston_touch_set_focus(touch->seat, shell->grab_surface);
 383 }
 384
 385 static void
 386 shell_touch_grab_end(struct shell_touch_grab *grab)
 387 {
 388         if (grab->shsurf)
 389                 wl_list_remove(&grab->shsurf_destroy_listener.link);
 390
 391         weston_touch_end_grab(grab->touch);
 392 }
 393
 394 static void
 395 center_on_output(struct weston_surface *surface,
 396                  struct weston_output *output);
 397
 398 static enum weston_keyboard_modifier
 399 get_modifier(char *modifier)
 400 {
 401         if (!modifier)
 402                 return MODIFIER_SUPER;
 403
 404         if (!strcmp("ctrl", modifier))
 405                 return MODIFIER_CTRL;
 406         else if (!strcmp("alt", modifier))
 407                 return MODIFIER_ALT;
 408         else if (!strcmp("super", modifier))
 409                 return MODIFIER_SUPER;
 410         else
 411                 return MODIFIER_SUPER;
 412 }
 413
 414 static enum animation_type
 415 get_animation_type(char *animation)
 416 {
 417         if (!animation)
 418                 return ANIMATION_NONE;
 419
 420         if (!strcmp("zoom", animation))
 421                 return ANIMATION_ZOOM;
 422         else if (!strcmp("fade", animation))
 423                 return ANIMATION_FADE;
 424         else
 425                 return ANIMATION_NONE;
 426 }
 427
 428 static void
 429 shell_configuration(struct desktop_shell *shell)
 430 {
 431         struct weston_config_section *section;
 432         int duration;
 433         char *s;
 434
 435         section = weston_config_get_section(shell->compositor->config,
 436                                             "screensaver", NULL, NULL);
 437         weston_config_section_get_string(section,
 438                                          "path", &shell->screensaver.path, NULL);
 439         weston_config_section_get_int(section, "duration", &duration, 60);
 440         shell->screensaver.duration = duration * 1000;
 441
 442         section = weston_config_get_section(shell->compositor->config,
 443                                             "shell", NULL, NULL);
 444         weston_config_section_get_string(section,
 445                                          "binding-modifier", &s, "super");
 446         shell->binding_modifier = get_modifier(s);
 447         free(s);
 448         weston_config_section_get_string(section, "animation", &s, "none");
 449         shell->win_animation_type = get_animation_type(s);
 450         free(s);
 451         weston_config_section_get_uint(section, "num-workspaces",
 452                                        &shell->workspaces.num,
 453                                        DEFAULT_NUM_WORKSPACES);
 454 }
 455
 456 static void
 457 focus_state_destroy(struct focus_state *state)
 458 {
 459         wl_list_remove(&state->seat_destroy_listener.link);
 460         wl_list_remove(&state->surface_destroy_listener.link);
 461         free(state);
 462 }
 463
 464 static void
 465 focus_state_seat_destroy(struct wl_listener *listener, void *data)
 466 {
 467         struct focus_state *state = container_of(listener,
 468                                                  struct focus_state,
 469                                                  seat_destroy_listener);
 470
 471         wl_list_remove(&state->link);
 472         focus_state_destroy(state);
 473 }
 474
 475 static void
 476 focus_state_surface_destroy(struct wl_listener *listener, void *data)
 477 {
 478         struct focus_state *state = container_of(listener,
 479                                                  struct focus_state,
 480                                                  surface_destroy_listener);
 481         struct desktop_shell *shell;
 482         struct weston_surface *main_surface;
 483         struct weston_surface *surface, *next;
 484
 485         main_surface = weston_surface_get_main_surface(state->keyboard_focus);
 486
 487         next = NULL;
 488         wl_list_for_each(surface, &state->ws->layer.surface_list, layer_link) {
 489                 if (surface == main_surface)
 490                         continue;
 491
 492                 next = surface;
 493                 break;
 494         }
 495
 496         /* if the focus was a sub-surface, activate its main surface */
 497         if (main_surface != state->keyboard_focus)
 498                 next = main_surface;
 499
 500         if (next) {
 501                 shell = state->seat->compositor->shell_interface.shell;
 502                 activate(shell, next, state->seat);
 503         } else {
 504                 wl_list_remove(&state->link);
 505                 focus_state_destroy(state);
 506         }
 507 }
 508
 509 static struct focus_state *
 510 focus_state_create(struct weston_seat *seat, struct workspace *ws)
 511 {
 512         struct focus_state *state;
 513
 514         state = malloc(sizeof *state);
 515         if (state == NULL)
 516                 return NULL;
 517
 518         state->ws = ws;
 519         state->seat = seat;
 520         wl_list_insert(&ws->focus_list, &state->link);
 521
 522         state->seat_destroy_listener.notify = focus_state_seat_destroy;
 523         state->surface_destroy_listener.notify = focus_state_surface_destroy;
 524         wl_signal_add(&seat->destroy_signal,
 525                       &state->seat_destroy_listener);
 526         wl_list_init(&state->surface_destroy_listener.link);
 527
 528         return state;
 529 }
 530
 531 static struct focus_state *
 532 ensure_focus_state(struct desktop_shell *shell, struct weston_seat *seat)
 533 {
 534         struct workspace *ws = get_current_workspace(shell);
 535         struct focus_state *state;
 536
 537         wl_list_for_each(state, &ws->focus_list, link)
 538                 if (state->seat == seat)
 539                         break;
 540
 541         if (&state->link == &ws->focus_list)
 542                 state = focus_state_create(seat, ws);
 543
 544         return state;
 545 }
 546
 547 static void
 548 restore_focus_state(struct desktop_shell *shell, struct workspace *ws)
 549 {
 550         struct focus_state *state, *next;
 551         struct weston_surface *surface;
 552
 553         wl_list_for_each_safe(state, next, &ws->focus_list, link) {
 554                 surface = state->keyboard_focus;
 555
 556                 weston_keyboard_set_focus(state->seat->keyboard, surface);
 557         }
 558 }
 559
 560 static void
 561 replace_focus_state(struct desktop_shell *shell, struct workspace *ws,
 562                     struct weston_seat *seat)
 563 {
 564         struct focus_state *state;
 565         struct weston_surface *surface;
 566
 567         wl_list_for_each(state, &ws->focus_list, link) {
 568                 if (state->seat == seat) {
 569                         surface = seat->keyboard->focus;
 570                         state->keyboard_focus = surface;
 571                         return;
 572                 }
 573         }
 574 }
 575
 576 static void
 577 drop_focus_state(struct desktop_shell *shell, struct workspace *ws,
 578                  struct weston_surface *surface)
 579 {
 580         struct focus_state *state;
 581
 582         wl_list_for_each(state, &ws->focus_list, link)
 583                 if (state->keyboard_focus == surface)
 584                         state->keyboard_focus = NULL;
 585 }
 586
 587 static void
 588 workspace_destroy(struct workspace *ws)
 589 {
 590         struct focus_state *state, *next;
 591
 592         wl_list_for_each_safe(state, next, &ws->focus_list, link)
 593                 focus_state_destroy(state);
 594
 595         free(ws);
 596 }
 597
 598 static void
 599 seat_destroyed(struct wl_listener *listener, void *data)
 600 {
 601         struct weston_seat *seat = data;
 602         struct focus_state *state, *next;
 603         struct workspace *ws = container_of(listener,
 604                                             struct workspace,
 605                                             seat_destroyed_listener);
 606
 607         wl_list_for_each_safe(state, next, &ws->focus_list, link)
 608                 if (state->seat == seat)
 609                         wl_list_remove(&state->link);
 610 }
 611
 612 static struct workspace *
 613 workspace_create(void)
 614 {
 615         struct workspace *ws = malloc(sizeof *ws);
 616         if (ws == NULL)
 617                 return NULL;
 618
 619         weston_layer_init(&ws->layer, NULL);
 620
 621         wl_list_init(&ws->focus_list);
 622         wl_list_init(&ws->seat_destroyed_listener.link);
 623         ws->seat_destroyed_listener.notify = seat_destroyed;
 624
 625         return ws;
 626 }
 627
 628 static int
 629 workspace_is_empty(struct workspace *ws)
 630 {
 631         return wl_list_empty(&ws->layer.surface_list);
 632 }
 633
 634 static struct workspace *
 635 get_workspace(struct desktop_shell *shell, unsigned int index)
 636 {
 637         struct workspace **pws = shell->workspaces.array.data;
 638         assert(index < shell->workspaces.num);
 639         pws += index;
 640         return *pws;
 641 }
 642
 643 static struct workspace *
 644 get_current_workspace(struct desktop_shell *shell)
 645 {
 646         return get_workspace(shell, shell->workspaces.current);
 647 }
 648
 649 static void
 650 activate_workspace(struct desktop_shell *shell, unsigned int index)
 651 {
 652         struct workspace *ws;
 653
 654         ws = get_workspace(shell, index);
 655         wl_list_insert(&shell->panel_layer.link, &ws->layer.link);
 656
 657         shell->workspaces.current = index;
 658 }
 659
 660 static unsigned int
 661 get_output_height(struct weston_output *output)
 662 {
 663         return abs(output->region.extents.y1 - output->region.extents.y2);
 664 }
 665
 666 static void
 667 surface_translate(struct weston_surface *surface, double d)
 668 {
 669         struct shell_surface *shsurf = get_shell_surface(surface);
 670         struct weston_transform *transform;
 671
 672         transform = &shsurf->workspace_transform;
 673         if (wl_list_empty(&transform->link))
 674                 wl_list_insert(surface->geometry.transformation_list.prev,
 675                                &shsurf->workspace_transform.link);
 676
 677         weston_matrix_init(&shsurf->workspace_transform.matrix);
 678         weston_matrix_translate(&shsurf->workspace_transform.matrix,
 679                                 0.0, d, 0.0);
 680         weston_surface_geometry_dirty(surface);
 681 }
 682
 683 static void
 684 workspace_translate_out(struct workspace *ws, double fraction)
 685 {
 686         struct weston_surface *surface;
 687         unsigned int height;
 688         double d;
 689
 690         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
 691                 height = get_output_height(surface->output);
 692                 d = height * fraction;
 693
 694                 surface_translate(surface, d);
 695         }
 696 }
 697
 698 static void
 699 workspace_translate_in(struct workspace *ws, double fraction)
 700 {
 701         struct weston_surface *surface;
 702         unsigned int height;
 703         double d;
 704
 705         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
 706                 height = get_output_height(surface->output);
 707
 708                 if (fraction > 0)
 709                         d = -(height - height * fraction);
 710                 else
 711                         d = height + height * fraction;
 712
 713                 surface_translate(surface, d);
 714         }
 715 }
 716
 717 static void
 718 broadcast_current_workspace_state(struct desktop_shell *shell)
 719 {
 720         struct wl_resource *resource;
 721
 722         wl_resource_for_each(resource, &shell->workspaces.client_list)
 723                 workspace_manager_send_state(resource,
 724                                              shell->workspaces.current,
 725                                              shell->workspaces.num);
 726 }
 727
 728 static void
 729 reverse_workspace_change_animation(struct desktop_shell *shell,
 730                                    unsigned int index,
 731                                    struct workspace *from,
 732                                    struct workspace *to)
 733 {
 734         shell->workspaces.current = index;
 735
 736         shell->workspaces.anim_to = to;
 737         shell->workspaces.anim_from = from;
 738         shell->workspaces.anim_dir = -1 * shell->workspaces.anim_dir;
 739         shell->workspaces.anim_timestamp = 0;
 740
 741         weston_compositor_schedule_repaint(shell->compositor);
 742 }
 743
 744 static void
 745 workspace_deactivate_transforms(struct workspace *ws)
 746 {
 747         struct weston_surface *surface;
 748         struct shell_surface *shsurf;
 749
 750         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
 751                 shsurf = get_shell_surface(surface);
 752                 if (!wl_list_empty(&shsurf->workspace_transform.link)) {
 753                         wl_list_remove(&shsurf->workspace_transform.link);
 754                         wl_list_init(&shsurf->workspace_transform.link);
 755                 }
 756                 weston_surface_geometry_dirty(surface);
 757         }
 758 }
 759
 760 static void
 761 finish_workspace_change_animation(struct desktop_shell *shell,
 762                                   struct workspace *from,
 763                                   struct workspace *to)
 764 {
 765         weston_compositor_schedule_repaint(shell->compositor);
 766
 767         wl_list_remove(&shell->workspaces.animation.link);
 768         workspace_deactivate_transforms(from);
 769         workspace_deactivate_transforms(to);
 770         shell->workspaces.anim_to = NULL;
 771
 772         wl_list_remove(&shell->workspaces.anim_from->layer.link);
 773 }
 774
 775 static void
 776 animate_workspace_change_frame(struct weston_animation *animation,
 777                                struct weston_output *output, uint32_t msecs)
 778 {
 779         struct desktop_shell *shell =
 780                 container_of(animation, struct desktop_shell,
 781                              workspaces.animation);
 782         struct workspace *from = shell->workspaces.anim_from;
 783         struct workspace *to = shell->workspaces.anim_to;
 784         uint32_t t;
 785         double x, y;
 786
 787         if (workspace_is_empty(from) && workspace_is_empty(to)) {
 788                 finish_workspace_change_animation(shell, from, to);
 789                 return;
 790         }
 791
 792         if (shell->workspaces.anim_timestamp == 0) {
 793                 if (shell->workspaces.anim_current == 0.0)
 794                         shell->workspaces.anim_timestamp = msecs;
 795                 else
 796                         shell->workspaces.anim_timestamp =
 797                                 msecs -
 798                                 /* Invers of movement function 'y' below. */
 799                                 (asin(1.0 - shell->workspaces.anim_current) *
 800                                  DEFAULT_WORKSPACE_CHANGE_ANIMATION_LENGTH *
 801                                  M_2_PI);
 802         }
 803
 804         t = msecs - shell->workspaces.anim_timestamp;
 805
 806         /*
 807          * x = [0, π/2]
 808          * y(x) = sin(x)
 809          */
 810         x = t * (1.0/DEFAULT_WORKSPACE_CHANGE_ANIMATION_LENGTH) * M_PI_2;
 811         y = sin(x);
 812
 813         if (t < DEFAULT_WORKSPACE_CHANGE_ANIMATION_LENGTH) {
 814                 weston_compositor_schedule_repaint(shell->compositor);
 815
 816                 workspace_translate_out(from, shell->workspaces.anim_dir * y);
 817                 workspace_translate_in(to, shell->workspaces.anim_dir * y);
 818                 shell->workspaces.anim_current = y;
 819
 820                 weston_compositor_schedule_repaint(shell->compositor);
 821         }
 822         else
 823                 finish_workspace_change_animation(shell, from, to);
 824 }
 825
 826 static void
 827 animate_workspace_change(struct desktop_shell *shell,
 828                          unsigned int index,
 829                          struct workspace *from,
 830                          struct workspace *to)
 831 {
 832         struct weston_output *output;
 833
 834         int dir;
 835
 836         if (index > shell->workspaces.current)
 837                 dir = -1;
 838         else
 839                 dir = 1;
 840
 841         shell->workspaces.current = index;
 842
 843         shell->workspaces.anim_dir = dir;
 844         shell->workspaces.anim_from = from;
 845         shell->workspaces.anim_to = to;
 846         shell->workspaces.anim_current = 0.0;
 847         shell->workspaces.anim_timestamp = 0;
 848
 849         output = container_of(shell->compositor->output_list.next,
 850                               struct weston_output, link);
 851         wl_list_insert(&output->animation_list,
 852                        &shell->workspaces.animation.link);
 853
 854         wl_list_insert(from->layer.link.prev, &to->layer.link);
 855
 856         workspace_translate_in(to, 0);
 857
 858         restore_focus_state(shell, to);
 859
 860         weston_compositor_schedule_repaint(shell->compositor);
 861 }
 862
 863 static void
 864 update_workspace(struct desktop_shell *shell, unsigned int index,
 865                  struct workspace *from, struct workspace *to)
 866 {
 867         shell->workspaces.current = index;
 868         wl_list_insert(&from->layer.link, &to->layer.link);
 869         wl_list_remove(&from->layer.link);
 870 }
 871
 872 static void
 873 change_workspace(struct desktop_shell *shell, unsigned int index)
 874 {
 875         struct workspace *from;
 876         struct workspace *to;
 877
 878         if (index == shell->workspaces.current)
 879                 return;
 880
 881         /* Don't change workspace when there is any fullscreen surfaces. */
 882         if (!wl_list_empty(&shell->fullscreen_layer.surface_list))
 883                 return;
 884
 885         from = get_current_workspace(shell);
 886         to = get_workspace(shell, index);
 887
 888         if (shell->workspaces.anim_from == to &&
 889             shell->workspaces.anim_to == from) {
 890                 restore_focus_state(shell, to);
 891                 reverse_workspace_change_animation(shell, index, from, to);
 892                 broadcast_current_workspace_state(shell);
 893                 return;
 894         }
 895
 896         if (shell->workspaces.anim_to != NULL)
 897                 finish_workspace_change_animation(shell,
 898                                                   shell->workspaces.anim_from,
 899                                                   shell->workspaces.anim_to);
 900
 901         restore_focus_state(shell, to);
 902
 903         if (workspace_is_empty(to) && workspace_is_empty(from))
 904                 update_workspace(shell, index, from, to);
 905         else
 906                 animate_workspace_change(shell, index, from, to);
 907
 908         broadcast_current_workspace_state(shell);
 909 }
 910
 911 static bool
 912 workspace_has_only(struct workspace *ws, struct weston_surface *surface)
 913 {
 914         struct wl_list *list = &ws->layer.surface_list;
 915         struct wl_list *e;
 916
 917         if (wl_list_empty(list))
 918                 return false;
 919
 920         e = list->next;
 921
 922         if (e->next != list)
 923                 return false;
 924
 925         return container_of(e, struct weston_surface, layer_link) == surface;
 926 }
 927
 928 static void
 929 move_surface_to_workspace(struct desktop_shell *shell,
 930                           struct weston_surface *surface,
 931                           uint32_t workspace)
 932 {
 933         struct workspace *from;
 934         struct workspace *to;
 935         struct weston_seat *seat;
 936         struct weston_surface *focus;
 937
 938         assert(weston_surface_get_main_surface(surface) == surface);
 939
 940         if (workspace == shell->workspaces.current)
 941                 return;
 942
 943         if (workspace >= shell->workspaces.num)
 944                 workspace = shell->workspaces.num - 1;
 945
 946         from = get_current_workspace(shell);
 947         to = get_workspace(shell, workspace);
 948
 949         wl_list_remove(&surface->layer_link);
 950         wl_list_insert(&to->layer.surface_list, &surface->layer_link);
 951
 952         drop_focus_state(shell, from, surface);
 953         wl_list_for_each(seat, &shell->compositor->seat_list, link) {
 954                 if (!seat->keyboard)
 955                         continue;
 956
 957                 focus = weston_surface_get_main_surface(seat->keyboard->focus);
 958                 if (focus == surface)
 959                         weston_keyboard_set_focus(seat->keyboard, NULL);
 960         }
 961
 962         weston_surface_damage_below(surface);
 963 }
 964
 965 static void
 966 take_surface_to_workspace_by_seat(struct desktop_shell *shell,
 967                                   struct weston_seat *seat,
 968                                   unsigned int index)
 969 {
 970         struct weston_surface *surface;
 971         struct shell_surface *shsurf;
 972         struct workspace *from;
 973         struct workspace *to;
 974         struct focus_state *state;
 975
 976         surface = weston_surface_get_main_surface(seat->keyboard->focus);
 977         if (surface == NULL ||
 978             index == shell->workspaces.current)
 979                 return;
 980
 981         from = get_current_workspace(shell);
 982         to = get_workspace(shell, index);
 983
 984         wl_list_remove(&surface->layer_link);
 985         wl_list_insert(&to->layer.surface_list, &surface->layer_link);
 986
 987         replace_focus_state(shell, to, seat);
 988         drop_focus_state(shell, from, surface);
 989
 990         if (shell->workspaces.anim_from == to &&
 991             shell->workspaces.anim_to == from) {
 992                 wl_list_remove(&to->layer.link);
 993                 wl_list_insert(from->layer.link.prev, &to->layer.link);
 994
 995                 reverse_workspace_change_animation(shell, index, from, to);
 996                 broadcast_current_workspace_state(shell);
 997
 998                 return;
 999         }
1000
1001         if (shell->workspaces.anim_to != NULL)
1002                 finish_workspace_change_animation(shell,
1003                                                   shell->workspaces.anim_from,
1004                                                   shell->workspaces.anim_to);
1005
1006         if (workspace_is_empty(from) &&
1007             workspace_has_only(to, surface))
1008                 update_workspace(shell, index, from, to);
1009         else {
1010                 shsurf = get_shell_surface(surface);
1011                 if (wl_list_empty(&shsurf->workspace_transform.link))
1012                         wl_list_insert(&shell->workspaces.anim_sticky_list,
1013                                        &shsurf->workspace_transform.link);
1014
1015                 animate_workspace_change(shell, index, from, to);
1016         }
1017
1018         broadcast_current_workspace_state(shell);
1019
1020         state = ensure_focus_state(shell, seat);
1021         if (state != NULL)
1022                 state->keyboard_focus = surface;
1023 }
1024
1025 static void
1026 workspace_manager_move_surface(struct wl_client *client,
1027                                struct wl_resource *resource,
1028                                struct wl_resource *surface_resource,
1029                                uint32_t workspace)
1030 {
1031         struct desktop_shell *shell = wl_resource_get_user_data(resource);
1032         struct weston_surface *surface =
1033                 wl_resource_get_user_data(surface_resource);
1034         struct weston_surface *main_surface;
1035
1036         main_surface = weston_surface_get_main_surface(surface);
1037         move_surface_to_workspace(shell, main_surface, workspace);
1038 }
1039
1040 static const struct workspace_manager_interface workspace_manager_implementation = {
1041         workspace_manager_move_surface,
1042 };
1043
1044 static void
1045 unbind_resource(struct wl_resource *resource)
1046 {
1047         wl_list_remove(wl_resource_get_link(resource));
1048 }
1049
1050 static void
1051 bind_workspace_manager(struct wl_client *client,
1052                        void *data, uint32_t version, uint32_t id)
1053 {
1054         struct desktop_shell *shell = data;
1055         struct wl_resource *resource;
1056
1057         resource = wl_resource_create(client,
1058                                       &workspace_manager_interface, 1, id);
1059
1060         if (resource == NULL) {
1061                 weston_log("couldn't add workspace manager object");
1062                 return;
1063         }
1064
1065         wl_resource_set_implementation(resource,
1066                                        &workspace_manager_implementation,
1067                                        shell, unbind_resource);
1068         wl_list_insert(&shell->workspaces.client_list,
1069                        wl_resource_get_link(resource));
1070
1071         workspace_manager_send_state(resource,
1072                                      shell->workspaces.current,
1073                                      shell->workspaces.num);
1074 }
1075
1076 static void
1077 touch_move_grab_down(struct weston_touch_grab *grab, uint32_t time,
1078                      int touch_id, wl_fixed_t sx, wl_fixed_t sy)
1079 {
1080 }
1081
1082 static void
1083 touch_move_grab_up(struct weston_touch_grab *grab, uint32_t time, int touch_id)
1084 {
1085         struct shell_touch_grab *shell_grab = container_of(grab,
1086                                                            struct shell_touch_grab,
1087                                                            grab);
1088
1089         if (grab->touch->seat->num_tp == 0)
1090                 shell_touch_grab_end(shell_grab);
1091 }
1092
1093 static void
1094 touch_move_grab_motion(struct weston_touch_grab *grab, uint32_t time,
1095                        int touch_id, wl_fixed_t sx, wl_fixed_t sy)
1096 {
1097         struct weston_touch_move_grab *move = (struct weston_touch_move_grab *) grab;
1098         struct shell_surface *shsurf = move->base.shsurf;
1099         struct weston_surface *es;
1100         int dx = wl_fixed_to_int(grab->touch->grab_x + move->dx);
1101         int dy = wl_fixed_to_int(grab->touch->grab_y + move->dy);
1102
1103         if (!shsurf)
1104                 return;
1105
1106         es = shsurf->surface;
1107
1108         weston_surface_configure(es, dx, dy,
1109                                  es->geometry.width, es->geometry.height);
1110
1111         weston_compositor_schedule_repaint(es->compositor);
1112 }
1113
1114 static const struct weston_touch_grab_interface touch_move_grab_interface = {
1115         touch_move_grab_down,
1116         touch_move_grab_up,
1117         touch_move_grab_motion,
1118 };
1119
1120 static int
1121 surface_touch_move(struct shell_surface *shsurf, struct weston_seat *seat)
1122 {
1123         struct weston_touch_move_grab *move;
1124
1125         if (!shsurf)
1126                 return -1;
1127
1128         if (shsurf->type == SHELL_SURFACE_FULLSCREEN)
1129                 return 0;
1130
1131         move = malloc(sizeof *move);
1132         if (!move)
1133                 return -1;
1134
1135         move->dx = wl_fixed_from_double(shsurf->surface->geometry.x) -
1136                         seat->touch->grab_x;
1137         move->dy = wl_fixed_from_double(shsurf->surface->geometry.y) -
1138                         seat->touch->grab_y;
1139
1140         shell_touch_grab_start(&move->base, &touch_move_grab_interface, shsurf,
1141                                seat->touch);
1142
1143         return 0;
1144 }
1145
1146 static void
1147 noop_grab_focus(struct weston_pointer_grab *grab)
1148 {
1149 }
1150
1151 static void
1152 move_grab_motion(struct weston_pointer_grab *grab, uint32_t time)
1153 {
1154         struct weston_move_grab *move = (struct weston_move_grab *) grab;
1155         struct weston_pointer *pointer = grab->pointer;
1156         struct shell_surface *shsurf = move->base.shsurf;
1157         struct weston_surface *es;
1158         int dx = wl_fixed_to_int(pointer->x + move->dx);
1159         int dy = wl_fixed_to_int(pointer->y + move->dy);
1160
1161         if (!shsurf)
1162                 return;
1163
1164         es = shsurf->surface;
1165
1166         weston_surface_configure(es, dx, dy,
1167                                  es->geometry.width, es->geometry.height);
1168
1169         weston_compositor_schedule_repaint(es->compositor);
1170 }
1171
1172 static void
1173 move_grab_button(struct weston_pointer_grab *grab,
1174                  uint32_t time, uint32_t button, uint32_t state_w)
1175 {
1176         struct shell_grab *shell_grab = container_of(grab, struct shell_grab,
1177                                                     grab);
1178         struct weston_pointer *pointer = grab->pointer;
1179         enum wl_pointer_button_state state = state_w;
1180
1181         if (pointer->button_count == 0 &&
1182             state == WL_POINTER_BUTTON_STATE_RELEASED) {
1183                 shell_grab_end(shell_grab);
1184                 free(grab);
1185         }
1186 }
1187
1188 static const struct weston_pointer_grab_interface move_grab_interface = {
1189         noop_grab_focus,
1190         move_grab_motion,
1191         move_grab_button,
1192 };
1193
1194 static int
1195 surface_move(struct shell_surface *shsurf, struct weston_seat *seat)
1196 {
1197         struct weston_move_grab *move;
1198
1199         if (!shsurf)
1200                 return -1;
1201
1202         if (shsurf->type == SHELL_SURFACE_FULLSCREEN)
1203                 return 0;
1204
1205         move = malloc(sizeof *move);
1206         if (!move)
1207                 return -1;
1208
1209         move->dx = wl_fixed_from_double(shsurf->surface->geometry.x) -
1210                         seat->pointer->grab_x;
1211         move->dy = wl_fixed_from_double(shsurf->surface->geometry.y) -
1212                         seat->pointer->grab_y;
1213
1214         shell_grab_start(&move->base, &move_grab_interface, shsurf,
1215                          seat->pointer, DESKTOP_SHELL_CURSOR_MOVE);
1216
1217         return 0;
1218 }
1219
1220 static void
1221 shell_surface_move(struct wl_client *client, struct wl_resource *resource,
1222                    struct wl_resource *seat_resource, uint32_t serial)
1223 {
1224         struct weston_seat *seat = wl_resource_get_user_data(seat_resource);
1225         struct shell_surface *shsurf = wl_resource_get_user_data(resource);
1226         struct weston_surface *surface;
1227
1228         if (seat->pointer &&
1229             seat->pointer->button_count > 0 &&
1230             seat->pointer->grab_serial == serial) {
1231                 surface = weston_surface_get_main_surface(seat->pointer->focus);
1232                 if ((surface == shsurf->surface) &&
1233                     (surface_move(shsurf, seat) < 0))
1234                         wl_resource_post_no_memory(resource);
1235         } else if (seat->touch &&
1236                    seat->touch->grab_serial == serial) {
1237                 surface = weston_surface_get_main_surface(seat->touch->focus);
1238                 if ((surface == shsurf->surface) &&
1239                     (surface_touch_move(shsurf, seat) < 0))
1240                         wl_resource_post_no_memory(resource);
1241         }
1242 }
1243
1244 struct weston_resize_grab {
1245         struct shell_grab base;
1246         uint32_t edges;
1247         int32_t width, height;
1248 };
1249
1250 static void
1251 resize_grab_motion(struct weston_pointer_grab *grab, uint32_t time)
1252 {
1253         struct weston_resize_grab *resize = (struct weston_resize_grab *) grab;
1254         struct weston_pointer *pointer = grab->pointer;
1255         struct shell_surface *shsurf = resize->base.shsurf;
1256         int32_t width, height;
1257         wl_fixed_t from_x, from_y;
1258         wl_fixed_t to_x, to_y;
1259
1260         if (!shsurf)
1261                 return;
1262
1263         weston_surface_from_global_fixed(shsurf->surface,
1264                                          pointer->grab_x, pointer->grab_y,
1265                                          &from_x, &from_y);
1266         weston_surface_from_global_fixed(shsurf->surface,
1267                                          pointer->x, pointer->y, &to_x, &to_y);
1268
1269         width = resize->width;
1270         if (resize->edges & WL_SHELL_SURFACE_RESIZE_LEFT) {
1271                 width += wl_fixed_to_int(from_x - to_x);
1272         } else if (resize->edges & WL_SHELL_SURFACE_RESIZE_RIGHT) {
1273                 width += wl_fixed_to_int(to_x - from_x);
1274         }
1275
1276         height = resize->height;
1277         if (resize->edges & WL_SHELL_SURFACE_RESIZE_TOP) {
1278                 height += wl_fixed_to_int(from_y - to_y);
1279         } else if (resize->edges & WL_SHELL_SURFACE_RESIZE_BOTTOM) {
1280                 height += wl_fixed_to_int(to_y - from_y);
1281         }
1282
1283         shsurf->client->send_configure(shsurf->surface,
1284                                        resize->edges, width, height);
1285 }
1286
1287 static void
1288 send_configure(struct weston_surface *surface,
1289                uint32_t edges, int32_t width, int32_t height)
1290 {
1291         struct shell_surface *shsurf = get_shell_surface(surface);
1292
1293         wl_shell_surface_send_configure(shsurf->resource,
1294                                         edges, width, height);
1295 }
1296
1297 static const struct weston_shell_client shell_client = {
1298         send_configure
1299 };
1300
1301 static void
1302 resize_grab_button(struct weston_pointer_grab *grab,
1303                    uint32_t time, uint32_t button, uint32_t state_w)
1304 {
1305         struct weston_resize_grab *resize = (struct weston_resize_grab *) grab;
1306         struct weston_pointer *pointer = grab->pointer;
1307         enum wl_pointer_button_state state = state_w;
1308
1309         if (pointer->button_count == 0 &&
1310             state == WL_POINTER_BUTTON_STATE_RELEASED) {
1311                 shell_grab_end(&resize->base);
1312                 free(grab);
1313         }
1314 }
1315
1316 static const struct weston_pointer_grab_interface resize_grab_interface = {
1317         noop_grab_focus,
1318         resize_grab_motion,
1319         resize_grab_button,
1320 };
1321
1322 /*
1323  * Returns the bounding box of a surface and all its sub-surfaces,
1324  * in the surface coordinates system. */
1325 static void
1326 surface_subsurfaces_boundingbox(struct weston_surface *surface, int32_t *x,
1327                                 int32_t *y, int32_t *w, int32_t *h) {
1328         pixman_region32_t region;
1329         pixman_box32_t *box;
1330         struct weston_subsurface *subsurface;
1331
1332         pixman_region32_init_rect(&region, 0, 0,
1333                                   surface->geometry.width,
1334                                   surface->geometry.height);
1335
1336         wl_list_for_each(subsurface, &surface->subsurface_list, parent_link) {
1337                 pixman_region32_union_rect(&region, &region,
1338                                            subsurface->position.x,
1339                                            subsurface->position.y,
1340                                            subsurface->surface->geometry.width,
1341                                            subsurface->surface->geometry.height);
1342         }
1343
1344         box = pixman_region32_extents(&region);
1345         if (x)
1346                 *x = box->x1;
1347         if (y)
1348                 *y = box->y1;
1349         if (w)
1350                 *w = box->x2 - box->x1;
1351         if (h)
1352                 *h = box->y2 - box->y1;
1353
1354         pixman_region32_fini(&region);
1355 }
1356
1357 static int
1358 surface_resize(struct shell_surface *shsurf,
1359                struct weston_seat *seat, uint32_t edges)
1360 {
1361         struct weston_resize_grab *resize;
1362
1363         if (shsurf->type == SHELL_SURFACE_FULLSCREEN ||
1364             shsurf->type == SHELL_SURFACE_MAXIMIZED)
1365                 return 0;
1366
1367         if (edges == 0 || edges > 15 ||
1368             (edges & 3) == 3 || (edges & 12) == 12)
1369                 return 0;
1370
1371         resize = malloc(sizeof *resize);
1372         if (!resize)
1373                 return -1;
1374
1375         resize->edges = edges;
1376         surface_subsurfaces_boundingbox(shsurf->surface, NULL, NULL,
1377                                         &resize->width, &resize->height);
1378
1379         shell_grab_start(&resize->base, &resize_grab_interface, shsurf,
1380                          seat->pointer, edges);
1381
1382         return 0;
1383 }
1384
1385 static void
1386 shell_surface_resize(struct wl_client *client, struct wl_resource *resource,
1387                      struct wl_resource *seat_resource, uint32_t serial,
1388                      uint32_t edges)
1389 {
1390         struct weston_seat *seat = wl_resource_get_user_data(seat_resource);
1391         struct shell_surface *shsurf = wl_resource_get_user_data(resource);
1392         struct weston_surface *surface;
1393
1394         if (shsurf->type == SHELL_SURFACE_FULLSCREEN)
1395                 return;
1396
1397         surface = weston_surface_get_main_surface(seat->pointer->focus);
1398         if (seat->pointer->button_count == 0 ||
1399             seat->pointer->grab_serial != serial ||
1400             surface != shsurf->surface)
1401                 return;
1402
1403         if (surface_resize(shsurf, seat, edges) < 0)
1404                 wl_resource_post_no_memory(resource);
1405 }
1406
1407 static void
1408 end_busy_cursor(struct shell_surface *shsurf, struct weston_pointer *pointer);
1409
1410 static void
1411 busy_cursor_grab_focus(struct weston_pointer_grab *base)
1412 {
1413         struct shell_grab *grab = (struct shell_grab *) base;
1414         struct weston_pointer *pointer = base->pointer;
1415         struct weston_surface *surface;
1416         wl_fixed_t sx, sy;
1417
1418         surface = weston_compositor_pick_surface(pointer->seat->compositor,
1419                                                  pointer->x, pointer->y,
1420                                                  &sx, &sy);
1421
1422         if (!grab->shsurf || grab->shsurf->surface != surface)
1423                 end_busy_cursor(grab->shsurf, pointer);
1424 }
1425
1426 static void
1427 busy_cursor_grab_motion(struct weston_pointer_grab *grab, uint32_t time)
1428 {
1429 }
1430
1431 static void
1432 busy_cursor_grab_button(struct weston_pointer_grab *base,
1433                         uint32_t time, uint32_t button, uint32_t state)
1434 {
1435         struct shell_grab *grab = (struct shell_grab *) base;
1436         struct shell_surface *shsurf = grab->shsurf;
1437         struct weston_seat *seat = grab->grab.pointer->seat;
1438
1439         if (shsurf && button == BTN_LEFT && state) {
1440                 activate(shsurf->shell, shsurf->surface, seat);
1441                 surface_move(shsurf, seat);
1442         } else if (shsurf && button == BTN_RIGHT && state) {
1443                 activate(shsurf->shell, shsurf->surface, seat);
1444                 surface_rotate(shsurf, seat);
1445         }
1446 }
1447
1448 static const struct weston_pointer_grab_interface busy_cursor_grab_interface = {
1449         busy_cursor_grab_focus,
1450         busy_cursor_grab_motion,
1451         busy_cursor_grab_button,
1452 };
1453
1454 static void
1455 set_busy_cursor(struct shell_surface *shsurf, struct weston_pointer *pointer)
1456 {
1457         struct shell_grab *grab;
1458
1459         grab = malloc(sizeof *grab);
1460         if (!grab)
1461                 return;
1462
1463         shell_grab_start(grab, &busy_cursor_grab_interface, shsurf, pointer,
1464                          DESKTOP_SHELL_CURSOR_BUSY);
1465 }
1466
1467 static void
1468 end_busy_cursor(struct shell_surface *shsurf, struct weston_pointer *pointer)
1469 {
1470         struct shell_grab *grab = (struct shell_grab *) pointer->grab;
1471
1472         if (grab->grab.interface == &busy_cursor_grab_interface &&
1473             grab->shsurf == shsurf) {
1474                 shell_grab_end(grab);
1475                 free(grab);
1476         }
1477 }
1478
1479 static void
1480 ping_timer_destroy(struct shell_surface *shsurf)
1481 {
1482         if (!shsurf || !shsurf->ping_timer)
1483                 return;
1484
1485         if (shsurf->ping_timer->source)
1486                 wl_event_source_remove(shsurf->ping_timer->source);
1487
1488         free(shsurf->ping_timer);
1489         shsurf->ping_timer = NULL;
1490 }
1491
1492 static int
1493 ping_timeout_handler(void *data)
1494 {
1495         struct shell_surface *shsurf = data;
1496         struct weston_seat *seat;
1497
1498         /* Client is not responding */
1499         shsurf->unresponsive = 1;
1500
1501         wl_list_for_each(seat, &shsurf->surface->compositor->seat_list, link)
1502                 if (seat->pointer->focus == shsurf->surface)
1503                         set_busy_cursor(shsurf, seat->pointer);
1504
1505         return 1;
1506 }
1507
1508 static void
1509 ping_handler(struct weston_surface *surface, uint32_t serial)
1510 {
1511         struct shell_surface *shsurf = get_shell_surface(surface);
1512         struct wl_event_loop *loop;
1513         int ping_timeout = 200;
1514
1515         if (!shsurf)
1516                 return;
1517         if (!shsurf->resource)
1518                 return;
1519
1520         if (shsurf->surface == shsurf->shell->grab_surface)
1521                 return;
1522
1523         if (!shsurf->ping_timer) {
1524                 shsurf->ping_timer = malloc(sizeof *shsurf->ping_timer);
1525                 if (!shsurf->ping_timer)
1526                         return;
1527
1528                 shsurf->ping_timer->serial = serial;
1529                 loop = wl_display_get_event_loop(surface->compositor->wl_display);
1530                 shsurf->ping_timer->source =
1531                         wl_event_loop_add_timer(loop, ping_timeout_handler, shsurf);
1532                 wl_event_source_timer_update(shsurf->ping_timer->source, ping_timeout);
1533
1534                 wl_shell_surface_send_ping(shsurf->resource, serial);
1535         }
1536 }
1537
1538 static void
1539 handle_pointer_focus(struct wl_listener *listener, void *data)
1540 {
1541         struct weston_pointer *pointer = data;
1542         struct weston_surface *surface = pointer->focus;
1543         struct weston_compositor *compositor;
1544         struct shell_surface *shsurf;
1545         uint32_t serial;
1546
1547         if (!surface)
1548                 return;
1549
1550         compositor = surface->compositor;
1551         shsurf = get_shell_surface(surface);
1552
1553         if (shsurf && shsurf->unresponsive) {
1554                 set_busy_cursor(shsurf, pointer);
1555         } else {
1556                 serial = wl_display_next_serial(compositor->wl_display);
1557                 ping_handler(surface, serial);
1558         }
1559 }
1560
1561 static void
1562 create_pointer_focus_listener(struct weston_seat *seat)
1563 {
1564         struct wl_listener *listener;
1565
1566         if (!seat->pointer)
1567                 return;
1568
1569         listener = malloc(sizeof *listener);
1570         listener->notify = handle_pointer_focus;
1571         wl_signal_add(&seat->pointer->focus_signal, listener);
1572 }
1573
1574 static void
1575 shell_surface_pong(struct wl_client *client, struct wl_resource *resource,
1576                                                         uint32_t serial)
1577 {
1578         struct shell_surface *shsurf = wl_resource_get_user_data(resource);
1579         struct weston_seat *seat;
1580         struct weston_compositor *ec = shsurf->surface->compositor;
1581
1582         if (shsurf->ping_timer == NULL)
1583                 /* Just ignore unsolicited pong. */
1584                 return;
1585
1586         if (shsurf->ping_timer->serial == serial) {
1587                 shsurf->unresponsive = 0;
1588                 wl_list_for_each(seat, &ec->seat_list, link) {
1589                         if(seat->pointer)
1590                                 end_busy_cursor(shsurf, seat->pointer);
1591                 }
1592                 ping_timer_destroy(shsurf);
1593         }
1594 }
1595
1596 static void
1597 set_title(struct shell_surface *shsurf, const char *title)
1598 {
1599         free(shsurf->title);
1600         shsurf->title = strdup(title);
1601 }
1602
1603 static void
1604 shell_surface_set_title(struct wl_client *client,
1605                         struct wl_resource *resource, const char *title)
1606 {
1607         struct shell_surface *shsurf = wl_resource_get_user_data(resource);
1608
1609         set_title(shsurf, title);
1610 }
1611
1612 static void
1613 shell_surface_set_class(struct wl_client *client,
1614                         struct wl_resource *resource, const char *class)
1615 {
1616         struct shell_surface *shsurf = wl_resource_get_user_data(resource);
1617
1618         free(shsurf->class);
1619         shsurf->class = strdup(class);
1620 }
1621
1622 static struct weston_output *
1623 get_default_output(struct weston_compositor *compositor)
1624 {
1625         return container_of(compositor->output_list.next,
1626                             struct weston_output, link);
1627 }
1628
1629 static void
1630 restore_output_mode(struct weston_output *output)
1631 {
1632         if (output->current_mode != output->original_mode ||
1633             (int32_t)output->current_scale != output->original_scale)
1634                 weston_output_switch_mode(output,
1635                                           output->original_mode,
1636                                           output->original_scale,
1637                                           WESTON_MODE_SWITCH_RESTORE_NATIVE);
1638 }
1639
1640 static void
1641 restore_all_output_modes(struct weston_compositor *compositor)
1642 {
1643         struct weston_output *output;
1644
1645         wl_list_for_each(output, &compositor->output_list, link)
1646                 restore_output_mode(output);
1647 }
1648
1649 static void
1650 shell_unset_fullscreen(struct shell_surface *shsurf)
1651 {
1652         struct workspace *ws;
1653         /* undo all fullscreen things here */
1654         if (shsurf->fullscreen.type == WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER &&
1655             shell_surface_is_top_fullscreen(shsurf)) {
1656                 restore_output_mode(shsurf->fullscreen_output);
1657         }
1658         shsurf->fullscreen.type = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
1659         shsurf->fullscreen.framerate = 0;
1660         wl_list_remove(&shsurf->fullscreen.transform.link);
1661         wl_list_init(&shsurf->fullscreen.transform.link);
1662         if (shsurf->fullscreen.black_surface)
1663                 weston_surface_destroy(shsurf->fullscreen.black_surface);
1664         shsurf->fullscreen.black_surface = NULL;
1665         shsurf->fullscreen_output = NULL;
1666         weston_surface_set_position(shsurf->surface,
1667                                     shsurf->saved_x, shsurf->saved_y);
1668         if (shsurf->saved_rotation_valid) {
1669                 wl_list_insert(&shsurf->surface->geometry.transformation_list,
1670                                &shsurf->rotation.transform.link);
1671                 shsurf->saved_rotation_valid = false;
1672         }
1673
1674         ws = get_current_workspace(shsurf->shell);
1675         wl_list_remove(&shsurf->surface->layer_link);
1676         wl_list_insert(&ws->layer.surface_list, &shsurf->surface->layer_link);
1677 }
1678
1679 static void
1680 shell_unset_maximized(struct shell_surface *shsurf)
1681 {
1682         struct workspace *ws;
1683         /* undo all maximized things here */
1684         shsurf->output = get_default_output(shsurf->surface->compositor);
1685         weston_surface_set_position(shsurf->surface,
1686                                     shsurf->saved_x,
1687                                     shsurf->saved_y);
1688
1689         if (shsurf->saved_rotation_valid) {
1690                 wl_list_insert(&shsurf->surface->geometry.transformation_list,
1691                                                    &shsurf->rotation.transform.link);
1692                 shsurf->saved_rotation_valid = false;
1693         }
1694
1695         ws = get_current_workspace(shsurf->shell);
1696         wl_list_remove(&shsurf->surface->layer_link);
1697         wl_list_insert(&ws->layer.surface_list, &shsurf->surface->layer_link);
1698 }
1699
1700 static int
1701 reset_shell_surface_type(struct shell_surface *surface)
1702 {
1703         switch (surface->type) {
1704         case SHELL_SURFACE_FULLSCREEN:
1705                 shell_unset_fullscreen(surface);
1706                 break;
1707         case SHELL_SURFACE_MAXIMIZED:
1708                 shell_unset_maximized(surface);
1709                 break;
1710         case SHELL_SURFACE_NONE:
1711         case SHELL_SURFACE_TOPLEVEL:
1712         case SHELL_SURFACE_TRANSIENT:
1713         case SHELL_SURFACE_POPUP:
1714         case SHELL_SURFACE_XWAYLAND:
1715                 break;
1716         }
1717
1718         surface->type = SHELL_SURFACE_NONE;
1719         return 0;
1720 }
1721
1722 static void
1723 set_surface_type(struct shell_surface *shsurf)
1724 {
1725         struct weston_surface *surface = shsurf->surface;
1726         struct weston_surface *pes = shsurf->parent;
1727
1728         reset_shell_surface_type(shsurf);
1729
1730         shsurf->type = shsurf->next_type;
1731         shsurf->next_type = SHELL_SURFACE_NONE;
1732
1733         switch (shsurf->type) {
1734         case SHELL_SURFACE_TOPLEVEL:
1735                 break;
1736         case SHELL_SURFACE_TRANSIENT:
1737                 weston_surface_set_position(surface,
1738                                 pes->geometry.x + shsurf->transient.x,
1739                                 pes->geometry.y + shsurf->transient.y);
1740                 break;
1741
1742         case SHELL_SURFACE_MAXIMIZED:
1743         case SHELL_SURFACE_FULLSCREEN:
1744                 shsurf->saved_x = surface->geometry.x;
1745                 shsurf->saved_y = surface->geometry.y;
1746                 shsurf->saved_position_valid = true;
1747
1748                 if (!wl_list_empty(&shsurf->rotation.transform.link)) {
1749                         wl_list_remove(&shsurf->rotation.transform.link);
1750                         wl_list_init(&shsurf->rotation.transform.link);
1751                         weston_surface_geometry_dirty(shsurf->surface);
1752                         shsurf->saved_rotation_valid = true;
1753                 }
1754                 break;
1755
1756         case SHELL_SURFACE_XWAYLAND:
1757                 weston_surface_set_position(surface, shsurf->transient.x,
1758                                             shsurf->transient.y);
1759                 break;
1760
1761         default:
1762                 break;
1763         }
1764 }
1765
1766 static void
1767 set_toplevel(struct shell_surface *shsurf)
1768 {
1769        shsurf->next_type = SHELL_SURFACE_TOPLEVEL;
1770 }
1771
1772 static void
1773 shell_surface_set_toplevel(struct wl_client *client,
1774                            struct wl_resource *resource)
1775 {
1776         struct shell_surface *surface = wl_resource_get_user_data(resource);
1777
1778         set_toplevel(surface);
1779 }
1780
1781 static void
1782 set_transient(struct shell_surface *shsurf,
1783               struct weston_surface *parent, int x, int y, uint32_t flags)
1784 {
1785         /* assign to parents output */
1786         shsurf->parent = parent;
1787         shsurf->transient.x = x;
1788         shsurf->transient.y = y;
1789         shsurf->transient.flags = flags;
1790         shsurf->next_type = SHELL_SURFACE_TRANSIENT;
1791 }
1792
1793 static void
1794 shell_surface_set_transient(struct wl_client *client,
1795                             struct wl_resource *resource,
1796                             struct wl_resource *parent_resource,
1797                             int x, int y, uint32_t flags)
1798 {
1799         struct shell_surface *shsurf = wl_resource_get_user_data(resource);
1800         struct weston_surface *parent =
1801                 wl_resource_get_user_data(parent_resource);
1802
1803         set_transient(shsurf, parent, x, y, flags);
1804 }
1805
1806 static struct desktop_shell *
1807 shell_surface_get_shell(struct shell_surface *shsurf)
1808 {
1809         return shsurf->shell;
1810 }
1811
1812 static int
1813 get_output_panel_height(struct desktop_shell *shell,
1814                         struct weston_output *output)
1815 {
1816         struct weston_surface *surface;
1817         int panel_height = 0;
1818
1819         if (!output)
1820                 return 0;
1821
1822         wl_list_for_each(surface, &shell->panel_layer.surface_list, layer_link) {
1823                 if (surface->output == output) {
1824                         panel_height = surface->geometry.height;
1825                         break;
1826                 }
1827         }
1828
1829         return panel_height;
1830 }
1831
1832 static void
1833 shell_surface_set_maximized(struct wl_client *client,
1834                             struct wl_resource *resource,
1835                             struct wl_resource *output_resource )
1836 {
1837         struct shell_surface *shsurf = wl_resource_get_user_data(resource);
1838         struct weston_surface *es = shsurf->surface;
1839         struct desktop_shell *shell = NULL;
1840         uint32_t edges = 0, panel_height = 0;
1841
1842         /* get the default output, if the client set it as NULL
1843            check whether the ouput is available */
1844         if (output_resource)
1845                 shsurf->output = wl_resource_get_user_data(output_resource);
1846         else if (es->output)
1847                 shsurf->output = es->output;
1848         else
1849                 shsurf->output = get_default_output(es->compositor);
1850
1851         shell = shell_surface_get_shell(shsurf);
1852         panel_height = get_output_panel_height(shell, shsurf->output);
1853         edges = WL_SHELL_SURFACE_RESIZE_TOP|WL_SHELL_SURFACE_RESIZE_LEFT;
1854
1855         shsurf->client->send_configure(shsurf->surface, edges,
1856                                        shsurf->output->width,
1857                                        shsurf->output->height - panel_height);
1858
1859         shsurf->next_type = SHELL_SURFACE_MAXIMIZED;
1860 }
1861
1862 static void
1863 black_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy, int32_t width, int32_t height);
1864
1865 static struct weston_surface *
1866 create_black_surface(struct weston_compositor *ec,
1867                      struct weston_surface *fs_surface,
1868                      float x, float y, int w, int h)
1869 {
1870         struct weston_surface *surface = NULL;
1871
1872         surface = weston_surface_create(ec);
1873         if (surface == NULL) {
1874                 weston_log("no memory\n");
1875                 return NULL;
1876         }
1877
1878         surface->configure = black_surface_configure;
1879         surface->configure_private = fs_surface;
1880         weston_surface_configure(surface, x, y, w, h);
1881         weston_surface_set_color(surface, 0.0, 0.0, 0.0, 1);
1882         pixman_region32_fini(&surface->opaque);
1883         pixman_region32_init_rect(&surface->opaque, 0, 0, w, h);
1884         pixman_region32_fini(&surface->input);
1885         pixman_region32_init_rect(&surface->input, 0, 0, w, h);
1886
1887         return surface;
1888 }
1889
1890 /* Create black surface and append it to the associated fullscreen surface.
1891  * Handle size dismatch and positioning according to the method. */
1892 static void
1893 shell_configure_fullscreen(struct shell_surface *shsurf)
1894 {
1895         struct weston_output *output = shsurf->fullscreen_output;
1896         struct weston_surface *surface = shsurf->surface;
1897         struct weston_matrix *matrix;
1898         float scale, output_aspect, surface_aspect, x, y;
1899         int32_t surf_x, surf_y, surf_width, surf_height;
1900
1901         if (shsurf->fullscreen.type != WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER)
1902                 restore_output_mode(output);
1903
1904         if (!shsurf->fullscreen.black_surface)
1905                 shsurf->fullscreen.black_surface =
1906                         create_black_surface(surface->compositor,
1907                                              surface,
1908                                              output->x, output->y,
1909                                              output->width,
1910                                              output->height);
1911
1912         wl_list_remove(&shsurf->fullscreen.black_surface->layer_link);
1913         wl_list_insert(&surface->layer_link,
1914                        &shsurf->fullscreen.black_surface->layer_link);
1915         shsurf->fullscreen.black_surface->output = output;
1916
1917         surface_subsurfaces_boundingbox(surface, &surf_x, &surf_y,
1918                                         &surf_width, &surf_height);
1919
1920         switch (shsurf->fullscreen.type) {
1921         case WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT:
1922                 if (surface->buffer_ref.buffer)
1923                         center_on_output(surface, shsurf->fullscreen_output);
1924                 break;
1925         case WL_SHELL_SURFACE_FULLSCREEN_METHOD_SCALE:
1926                 /* 1:1 mapping between surface and output dimensions */
1927                 if (output->width == surf_width &&
1928                         output->height == surf_height) {
1929                         weston_surface_set_position(surface, output->x - surf_x,
1930                                                              output->y - surf_y);
1931                         break;
1932                 }
1933
1934                 matrix = &shsurf->fullscreen.transform.matrix;
1935                 weston_matrix_init(matrix);
1936
1937                 output_aspect = (float) output->width /
1938                         (float) output->height;
1939                 surface_aspect = (float) surface->geometry.width /
1940                         (float) surface->geometry.height;
1941                 if (output_aspect < surface_aspect)
1942                         scale = (float) output->width /
1943                                 (float) surf_width;
1944                 else
1945                         scale = (float) output->height /
1946                                 (float) surf_height;
1947
1948                 weston_matrix_scale(matrix, scale, scale, 1);
1949                 wl_list_remove(&shsurf->fullscreen.transform.link);
1950                 wl_list_insert(&surface->geometry.transformation_list,
1951                                &shsurf->fullscreen.transform.link);
1952                 x = output->x + (output->width - surf_width * scale) / 2 - surf_x;
1953                 y = output->y + (output->height - surf_height * scale) / 2 - surf_y;
1954                 weston_surface_set_position(surface, x, y);
1955
1956                 break;
1957         case WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER:
1958                 if (shell_surface_is_top_fullscreen(shsurf)) {
1959                         struct weston_mode mode = {0,
1960                                 surf_width * surface->buffer_scale,
1961                                 surf_height * surface->buffer_scale,
1962                                 shsurf->fullscreen.framerate};
1963
1964                         if (weston_output_switch_mode(output, &mode, surface->buffer_scale,
1965                                         WESTON_MODE_SWITCH_SET_TEMPORARY) == 0) {
1966                                 weston_surface_set_position(surface,
1967                                                             output->x - surf_x,
1968                                                             output->y - surf_y);
1969                                 weston_surface_configure(shsurf->fullscreen.black_surface,
1970                                                          output->x - surf_x,
1971                                                          output->y - surf_y,
1972                                                          output->width,
1973                                                          output->height);
1974                                 break;
1975                         } else {
1976                                 restore_output_mode(output);
1977                                 center_on_output(surface, output);
1978                         }
1979                 }
1980                 break;
1981         case WL_SHELL_SURFACE_FULLSCREEN_METHOD_FILL:
1982                 center_on_output(surface, output);
1983                 break;
1984         default:
1985                 break;
1986         }
1987 }
1988
1989 /* make the fullscreen and black surface at the top */
1990 static void
1991 shell_stack_fullscreen(struct shell_surface *shsurf)
1992 {
1993         struct weston_output *output = shsurf->fullscreen_output;
1994         struct weston_surface *surface = shsurf->surface;
1995         struct desktop_shell *shell = shell_surface_get_shell(shsurf);
1996
1997         wl_list_remove(&surface->layer_link);
1998         wl_list_insert(&shell->fullscreen_layer.surface_list,
1999                        &surface->layer_link);
2000         weston_surface_damage(surface);
2001
2002         if (!shsurf->fullscreen.black_surface)
2003                 shsurf->fullscreen.black_surface =
2004                         create_black_surface(surface->compositor,
2005                                              surface,
2006                                              output->x, output->y,
2007                                              output->width,
2008                                              output->height);
2009
2010         wl_list_remove(&shsurf->fullscreen.black_surface->layer_link);
2011         wl_list_insert(&surface->layer_link,
2012                        &shsurf->fullscreen.black_surface->layer_link);
2013         weston_surface_damage(shsurf->fullscreen.black_surface);
2014 }
2015
2016 static void
2017 shell_map_fullscreen(struct shell_surface *shsurf)
2018 {
2019         shell_stack_fullscreen(shsurf);
2020         shell_configure_fullscreen(shsurf);
2021 }
2022
2023 static void
2024 set_fullscreen(struct shell_surface *shsurf,
2025                uint32_t method,
2026                uint32_t framerate,
2027                struct weston_output *output)
2028 {
2029         struct weston_surface *es = shsurf->surface;
2030
2031         if (output)
2032                 shsurf->output = output;
2033         else if (es->output)
2034                 shsurf->output = es->output;
2035         else
2036                 shsurf->output = get_default_output(es->compositor);
2037
2038         shsurf->fullscreen_output = shsurf->output;
2039         shsurf->fullscreen.type = method;
2040         shsurf->fullscreen.framerate = framerate;
2041         shsurf->next_type = SHELL_SURFACE_FULLSCREEN;
2042
2043         shsurf->client->send_configure(shsurf->surface, 0,
2044                                        shsurf->output->width,
2045                                        shsurf->output->height);
2046 }
2047
2048 static void
2049 shell_surface_set_fullscreen(struct wl_client *client,
2050                              struct wl_resource *resource,
2051                              uint32_t method,
2052                              uint32_t framerate,
2053                              struct wl_resource *output_resource)
2054 {
2055         struct shell_surface *shsurf = wl_resource_get_user_data(resource);
2056         struct weston_output *output;
2057
2058         if (output_resource)
2059                 output = wl_resource_get_user_data(output_resource);
2060         else
2061                 output = NULL;
2062
2063         set_fullscreen(shsurf, method, framerate, output);
2064 }
2065
2066 static void
2067 set_xwayland(struct shell_surface *shsurf, int x, int y, uint32_t flags)
2068 {
2069         /* XXX: using the same fields for transient type */
2070         shsurf->transient.x = x;
2071         shsurf->transient.y = y;
2072         shsurf->transient.flags = flags;
2073         shsurf->next_type = SHELL_SURFACE_XWAYLAND;
2074 }
2075
2076 static const struct weston_pointer_grab_interface popup_grab_interface;
2077
2078 static void
2079 destroy_shell_seat(struct wl_listener *listener, void *data)
2080 {
2081         struct shell_seat *shseat =
2082                 container_of(listener,
2083                              struct shell_seat, seat_destroy_listener);
2084         struct shell_surface *shsurf, *prev = NULL;
2085
2086         if (shseat->popup_grab.grab.interface == &popup_grab_interface) {
2087                 weston_pointer_end_grab(shseat->popup_grab.grab.pointer);
2088                 shseat->popup_grab.client = NULL;
2089
2090                 wl_list_for_each(shsurf, &shseat->popup_grab.surfaces_list, popup.grab_link) {
2091                         shsurf->popup.shseat = NULL;
2092                         if (prev) {
2093                                 wl_list_init(&prev->popup.grab_link);
2094                         }
2095                         prev = shsurf;
2096                 }
2097                 wl_list_init(&prev->popup.grab_link);
2098         }
2099
2100         wl_list_remove(&shseat->seat_destroy_listener.link);
2101         free(shseat);
2102 }
2103
2104 static struct shell_seat *
2105 create_shell_seat(struct weston_seat *seat)
2106 {
2107         struct shell_seat *shseat;
2108
2109         shseat = calloc(1, sizeof *shseat);
2110         if (!shseat) {
2111                 weston_log("no memory to allocate shell seat\n");
2112                 return NULL;
2113         }
2114
2115         shseat->seat = seat;
2116         wl_list_init(&shseat->popup_grab.surfaces_list);
2117
2118         shseat->seat_destroy_listener.notify = destroy_shell_seat;
2119         wl_signal_add(&seat->destroy_signal,
2120                       &shseat->seat_destroy_listener);
2121
2122         return shseat;
2123 }
2124
2125 static struct shell_seat *
2126 get_shell_seat(struct weston_seat *seat)
2127 {
2128         struct wl_listener *listener;
2129
2130         listener = wl_signal_get(&seat->destroy_signal, destroy_shell_seat);
2131         if (listener == NULL)
2132                 return create_shell_seat(seat);
2133
2134         return container_of(listener,
2135                             struct shell_seat, seat_destroy_listener);
2136 }
2137
2138 static void
2139 popup_grab_focus(struct weston_pointer_grab *grab)
2140 {
2141         struct weston_pointer *pointer = grab->pointer;
2142         struct weston_surface *surface;
2143         struct shell_seat *shseat =
2144             container_of(grab, struct shell_seat, popup_grab.grab);
2145         struct wl_client *client = shseat->popup_grab.client;
2146         wl_fixed_t sx, sy;
2147
2148         surface = weston_compositor_pick_surface(pointer->seat->compositor,
2149                                                  pointer->x, pointer->y,
2150                                                  &sx, &sy);
2151
2152         if (surface && wl_resource_get_client(surface->resource) == client) {
2153                 weston_pointer_set_focus(pointer, surface, sx, sy);
2154         } else {
2155                 weston_pointer_set_focus(pointer, NULL,
2156                                          wl_fixed_from_int(0),
2157                                          wl_fixed_from_int(0));
2158         }
2159 }
2160
2161 static void
2162 popup_grab_motion(struct weston_pointer_grab *grab, uint32_t time)
2163 {
2164         struct weston_pointer *pointer = grab->pointer;
2165         struct wl_resource *resource;
2166         wl_fixed_t sx, sy;
2167
2168         wl_resource_for_each(resource, &pointer->focus_resource_list) {
2169                 weston_surface_from_global_fixed(pointer->focus,
2170                                                  pointer->x, pointer->y,
2171                                                  &sx, &sy);
2172                 wl_pointer_send_motion(resource, time, sx, sy);
2173         }
2174 }
2175
2176 static void
2177 popup_grab_button(struct weston_pointer_grab *grab,
2178                   uint32_t time, uint32_t button, uint32_t state_w)
2179 {
2180         struct wl_resource *resource;
2181         struct shell_seat *shseat =
2182             container_of(grab, struct shell_seat, popup_grab.grab);
2183         struct wl_display *display = shseat->seat->compositor->wl_display;
2184         enum wl_pointer_button_state state = state_w;
2185         uint32_t serial;
2186         struct wl_list *resource_list;
2187
2188         resource_list = &grab->pointer->focus_resource_list;
2189         if (!wl_list_empty(resource_list)) {
2190                 serial = wl_display_get_serial(display);
2191                 wl_resource_for_each(resource, resource_list) {
2192                         wl_pointer_send_button(resource, serial,
2193                                                time, button, state);
2194                 }
2195         } else if (state == WL_POINTER_BUTTON_STATE_RELEASED &&
2196                    (shseat->popup_grab.initial_up ||
2197                     time - shseat->seat->pointer->grab_time > 500)) {
2198                 popup_grab_end(grab->pointer);
2199         }
2200
2201         if (state == WL_POINTER_BUTTON_STATE_RELEASED)
2202                 shseat->popup_grab.initial_up = 1;
2203 }
2204
2205 static const struct weston_pointer_grab_interface popup_grab_interface = {
2206         popup_grab_focus,
2207         popup_grab_motion,
2208         popup_grab_button,
2209 };
2210
2211 static void
2212 popup_grab_end(struct weston_pointer *pointer)
2213 {
2214         struct weston_pointer_grab *grab = pointer->grab;
2215         struct shell_seat *shseat =
2216             container_of(grab, struct shell_seat, popup_grab.grab);
2217         struct shell_surface *shsurf;
2218         struct shell_surface *prev = NULL;
2219
2220         if (pointer->grab->interface == &popup_grab_interface) {
2221                 weston_pointer_end_grab(grab->pointer);
2222                 shseat->popup_grab.client = NULL;
2223                 shseat->popup_grab.grab.interface = NULL;
2224                 assert(!wl_list_empty(&shseat->popup_grab.surfaces_list));
2225                 /* Send the popup_done event to all the popups open */
2226                 wl_list_for_each(shsurf, &shseat->popup_grab.surfaces_list, popup.grab_link) {
2227                         wl_shell_surface_send_popup_done(shsurf->resource);
2228                         shsurf->popup.shseat = NULL;
2229                         if (prev) {
2230                                 wl_list_init(&prev->popup.grab_link);
2231                         }
2232                         prev = shsurf;
2233                 }
2234                 wl_list_init(&prev->popup.grab_link);
2235                 wl_list_init(&shseat->popup_grab.surfaces_list);
2236         }
2237 }
2238
2239 static void
2240 add_popup_grab(struct shell_surface *shsurf, struct shell_seat *shseat)
2241 {
2242         struct weston_seat *seat = shseat->seat;
2243
2244         if (wl_list_empty(&shseat->popup_grab.surfaces_list)) {
2245                 shseat->popup_grab.client = wl_resource_get_client(shsurf->resource);
2246                 shseat->popup_grab.grab.interface = &popup_grab_interface;
2247                 /* We must make sure here that this popup was opened after
2248                  * a mouse press, and not just by moving around with other
2249                  * popups already open. */
2250                 if (shseat->seat->pointer->button_count > 0)
2251                         shseat->popup_grab.initial_up = 0;
2252
2253                 wl_list_insert(&shseat->popup_grab.surfaces_list, &shsurf->popup.grab_link);
2254                 weston_pointer_start_grab(seat->pointer, &shseat->popup_grab.grab);
2255         } else {
2256                 wl_list_insert(&shseat->popup_grab.surfaces_list, &shsurf->popup.grab_link);
2257         }
2258 }
2259
2260 static void
2261 remove_popup_grab(struct shell_surface *shsurf)
2262 {
2263         struct shell_seat *shseat = shsurf->popup.shseat;
2264
2265         wl_list_remove(&shsurf->popup.grab_link);
2266         wl_list_init(&shsurf->popup.grab_link);
2267         if (wl_list_empty(&shseat->popup_grab.surfaces_list)) {
2268                 weston_pointer_end_grab(shseat->popup_grab.grab.pointer);
2269                 shseat->popup_grab.grab.interface = NULL;
2270         }
2271 }
2272
2273 static void
2274 shell_map_popup(struct shell_surface *shsurf)
2275 {
2276         struct shell_seat *shseat = shsurf->popup.shseat;
2277         struct weston_surface *es = shsurf->surface;
2278         struct weston_surface *parent = shsurf->parent;
2279
2280         es->output = parent->output;
2281
2282         weston_surface_set_transform_parent(es, parent);
2283         weston_surface_set_position(es, shsurf->popup.x, shsurf->popup.y);
2284         weston_surface_update_transform(es);
2285
2286         if (shseat->seat->pointer->grab_serial == shsurf->popup.serial) {
2287                 add_popup_grab(shsurf, shseat);
2288         } else {
2289                 wl_shell_surface_send_popup_done(shsurf->resource);
2290                 shseat->popup_grab.client = NULL;
2291         }
2292 }
2293
2294 static void
2295 shell_surface_set_popup(struct wl_client *client,
2296                         struct wl_resource *resource,
2297                         struct wl_resource *seat_resource,
2298                         uint32_t serial,
2299                         struct wl_resource *parent_resource,
2300                         int32_t x, int32_t y, uint32_t flags)
2301 {
2302         struct shell_surface *shsurf = wl_resource_get_user_data(resource);
2303
2304         shsurf->type = SHELL_SURFACE_POPUP;
2305         shsurf->parent = wl_resource_get_user_data(parent_resource);
2306         shsurf->popup.shseat = get_shell_seat(wl_resource_get_user_data(seat_resource));
2307         shsurf->popup.serial = serial;
2308         shsurf->popup.x = x;
2309         shsurf->popup.y = y;
2310 }
2311
2312 static const struct wl_shell_surface_interface shell_surface_implementation = {
2313         shell_surface_pong,
2314         shell_surface_move,
2315         shell_surface_resize,
2316         shell_surface_set_toplevel,
2317         shell_surface_set_transient,
2318         shell_surface_set_fullscreen,
2319         shell_surface_set_popup,
2320         shell_surface_set_maximized,
2321         shell_surface_set_title,
2322         shell_surface_set_class
2323 };
2324
2325 static void
2326 destroy_shell_surface(struct shell_surface *shsurf)
2327 {
2328         wl_signal_emit(&shsurf->destroy_signal, shsurf);
2329
2330         if (!wl_list_empty(&shsurf->popup.grab_link)) {
2331                 remove_popup_grab(shsurf);
2332         }
2333
2334         if (shsurf->fullscreen.type == WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER &&
2335             shell_surface_is_top_fullscreen(shsurf))
2336                 restore_output_mode (shsurf->fullscreen_output);
2337
2338         if (shsurf->fullscreen.black_surface)
2339                 weston_surface_destroy(shsurf->fullscreen.black_surface);
2340
2341         /* As destroy_resource() use wl_list_for_each_safe(),
2342          * we can always remove the listener.
2343          */
2344         wl_list_remove(&shsurf->surface_destroy_listener.link);
2345         shsurf->surface->configure = NULL;
2346         ping_timer_destroy(shsurf);
2347         free(shsurf->title);
2348
2349         wl_list_remove(&shsurf->link);
2350         free(shsurf);
2351 }
2352
2353 static void
2354 shell_destroy_shell_surface(struct wl_resource *resource)
2355 {
2356         struct shell_surface *shsurf = wl_resource_get_user_data(resource);
2357
2358         destroy_shell_surface(shsurf);
2359 }
2360
2361 static void
2362 shell_handle_surface_destroy(struct wl_listener *listener, void *data)
2363 {
2364         struct shell_surface *shsurf = container_of(listener,
2365                                                     struct shell_surface,
2366                                                     surface_destroy_listener);
2367
2368         if (shsurf->resource)
2369                 wl_resource_destroy(shsurf->resource);
2370         else
2371                 destroy_shell_surface(shsurf);
2372 }
2373
2374 static void
2375 shell_surface_configure(struct weston_surface *, int32_t, int32_t, int32_t, int32_t);
2376
2377 static struct shell_surface *
2378 get_shell_surface(struct weston_surface *surface)
2379 {
2380         if (surface->configure == shell_surface_configure)
2381                 return surface->configure_private;
2382         else
2383                 return NULL;
2384 }
2385
2386 static  struct shell_surface *
2387 create_shell_surface(void *shell, struct weston_surface *surface,
2388                      const struct weston_shell_client *client)
2389 {
2390         struct shell_surface *shsurf;
2391
2392         if (surface->configure) {
2393                 weston_log("surface->configure already set\n");
2394                 return NULL;
2395         }
2396
2397         shsurf = calloc(1, sizeof *shsurf);
2398         if (!shsurf) {
2399                 weston_log("no memory to allocate shell surface\n");
2400                 return NULL;
2401         }
2402
2403         surface->configure = shell_surface_configure;
2404         surface->configure_private = shsurf;
2405
2406         shsurf->shell = (struct desktop_shell *) shell;
2407         shsurf->unresponsive = 0;
2408         shsurf->saved_position_valid = false;
2409         shsurf->saved_rotation_valid = false;
2410         shsurf->surface = surface;
2411         shsurf->fullscreen.type = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
2412         shsurf->fullscreen.framerate = 0;
2413         shsurf->fullscreen.black_surface = NULL;
2414         shsurf->ping_timer = NULL;
2415         wl_list_init(&shsurf->fullscreen.transform.link);
2416
2417         wl_signal_init(&shsurf->destroy_signal);
2418         shsurf->surface_destroy_listener.notify = shell_handle_surface_destroy;
2419         wl_signal_add(&surface->destroy_signal,
2420                       &shsurf->surface_destroy_listener);
2421
2422         /* init link so its safe to always remove it in destroy_shell_surface */
2423         wl_list_init(&shsurf->link);
2424         wl_list_init(&shsurf->popup.grab_link);
2425
2426         /* empty when not in use */
2427         wl_list_init(&shsurf->rotation.transform.link);
2428         weston_matrix_init(&shsurf->rotation.rotation);
2429
2430         wl_list_init(&shsurf->workspace_transform.link);
2431
2432         shsurf->type = SHELL_SURFACE_NONE;
2433         shsurf->next_type = SHELL_SURFACE_NONE;
2434
2435         shsurf->client = client;
2436
2437         return shsurf;
2438 }
2439
2440 static void
2441 shell_get_shell_surface(struct wl_client *client,
2442                         struct wl_resource *resource,
2443                         uint32_t id,
2444                         struct wl_resource *surface_resource)
2445 {
2446         struct weston_surface *surface =
2447                 wl_resource_get_user_data(surface_resource);
2448         struct desktop_shell *shell = wl_resource_get_user_data(resource);
2449         struct shell_surface *shsurf;
2450
2451         if (get_shell_surface(surface)) {
2452                 wl_resource_post_error(surface_resource,
2453                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2454                                        "desktop_shell::get_shell_surface already requested");
2455                 return;
2456         }
2457
2458         shsurf = create_shell_surface(shell, surface, &shell_client);
2459         if (!shsurf) {
2460                 wl_resource_post_error(surface_resource,
2461                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2462                                        "surface->configure already set");
2463                 return;
2464         }
2465
2466         shsurf->resource =
2467                 wl_resource_create(client,
2468                                    &wl_shell_surface_interface, 1, id);
2469         wl_resource_set_implementation(shsurf->resource,
2470                                        &shell_surface_implementation,
2471                                        shsurf, shell_destroy_shell_surface);
2472 }
2473
2474 static const struct wl_shell_interface shell_implementation = {
2475         shell_get_shell_surface
2476 };
2477
2478 static void
2479 shell_fade(struct desktop_shell *shell, enum fade_type type);
2480
2481 static int
2482 screensaver_timeout(void *data)
2483 {
2484         struct desktop_shell *shell = data;
2485
2486         shell_fade(shell, FADE_OUT);
2487
2488         return 1;
2489 }
2490
2491 static void
2492 handle_screensaver_sigchld(struct weston_process *proc, int status)
2493 {
2494         struct desktop_shell *shell =
2495                 container_of(proc, struct desktop_shell, screensaver.process);
2496
2497         proc->pid = 0;
2498
2499         if (shell->locked)
2500                 weston_compositor_sleep(shell->compositor);
2501 }
2502
2503 static void
2504 launch_screensaver(struct desktop_shell *shell)
2505 {
2506         if (shell->screensaver.binding)
2507                 return;
2508
2509         if (!shell->screensaver.path) {
2510                 weston_compositor_sleep(shell->compositor);
2511                 return;
2512         }
2513
2514         if (shell->screensaver.process.pid != 0) {
2515                 weston_log("old screensaver still running\n");
2516                 return;
2517         }
2518
2519         weston_client_launch(shell->compositor,
2520                            &shell->screensaver.process,
2521                            shell->screensaver.path,
2522                            handle_screensaver_sigchld);
2523 }
2524
2525 static void
2526 terminate_screensaver(struct desktop_shell *shell)
2527 {
2528         if (shell->screensaver.process.pid == 0)
2529                 return;
2530
2531         kill(shell->screensaver.process.pid, SIGTERM);
2532 }
2533
2534 static void
2535 configure_static_surface(struct weston_surface *es, struct weston_layer *layer, int32_t width, int32_t height)
2536 {
2537         struct weston_surface *s, *next;
2538
2539         if (width == 0)
2540                 return;
2541
2542         wl_list_for_each_safe(s, next, &layer->surface_list, layer_link) {
2543                 if (s->output == es->output && s != es) {
2544                         weston_surface_unmap(s);
2545                         s->configure = NULL;
2546                 }
2547         }
2548
2549         weston_surface_configure(es, es->output->x, es->output->y, width, height);
2550
2551         if (wl_list_empty(&es->layer_link)) {
2552                 wl_list_insert(&layer->surface_list, &es->layer_link);
2553                 weston_compositor_schedule_repaint(es->compositor);
2554         }
2555 }
2556
2557 static void
2558 background_configure(struct weston_surface *es, int32_t sx, int32_t sy, int32_t width, int32_t height)
2559 {
2560         struct desktop_shell *shell = es->configure_private;
2561
2562         configure_static_surface(es, &shell->background_layer, width, height);
2563 }
2564
2565 static void
2566 desktop_shell_set_background(struct wl_client *client,
2567                              struct wl_resource *resource,
2568                              struct wl_resource *output_resource,
2569                              struct wl_resource *surface_resource)
2570 {
2571         struct desktop_shell *shell = wl_resource_get_user_data(resource);
2572         struct weston_surface *surface =
2573                 wl_resource_get_user_data(surface_resource);
2574
2575         if (surface->configure) {
2576                 wl_resource_post_error(surface_resource,
2577                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2578                                        "surface role already assigned");
2579                 return;
2580         }
2581
2582         surface->configure = background_configure;
2583         surface->configure_private = shell;
2584         surface->output = wl_resource_get_user_data(output_resource);
2585         desktop_shell_send_configure(resource, 0,
2586                                      surface_resource,
2587                                      surface->output->width,
2588                                      surface->output->height);
2589 }
2590
2591 static void
2592 panel_configure(struct weston_surface *es, int32_t sx, int32_t sy, int32_t width, int32_t height)
2593 {
2594         struct desktop_shell *shell = es->configure_private;
2595
2596         configure_static_surface(es, &shell->panel_layer, width, height);
2597 }
2598
2599 static void
2600 desktop_shell_set_panel(struct wl_client *client,
2601                         struct wl_resource *resource,
2602                         struct wl_resource *output_resource,
2603                         struct wl_resource *surface_resource)
2604 {
2605         struct desktop_shell *shell = wl_resource_get_user_data(resource);
2606         struct weston_surface *surface =
2607                 wl_resource_get_user_data(surface_resource);
2608
2609         if (surface->configure) {
2610                 wl_resource_post_error(surface_resource,
2611                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
2612                                        "surface role already assigned");
2613                 return;
2614         }
2615
2616         surface->configure = panel_configure;
2617         surface->configure_private = shell;
2618         surface->output = wl_resource_get_user_data(output_resource);
2619         desktop_shell_send_configure(resource, 0,
2620                                      surface_resource,
2621                                      surface->output->width,
2622                                      surface->output->height);
2623 }
2624
2625 static void
2626 lock_surface_configure(struct weston_surface *surface, int32_t sx, int32_t sy, int32_t width, int32_t height)
2627 {
2628         struct desktop_shell *shell = surface->configure_private;
2629
2630         if (width == 0)
2631                 return;
2632
2633         surface->geometry.width = width;
2634         surface->geometry.height = height;
2635         center_on_output(surface, get_default_output(shell->compositor));
2636
2637         if (!weston_surface_is_mapped(surface)) {
2638                 wl_list_insert(&shell->lock_layer.surface_list,
2639                                &surface->layer_link);
2640                 weston_surface_update_transform(surface);
2641                 shell_fade(shell, FADE_IN);
2642         }
2643 }
2644
2645 static void
2646 handle_lock_surface_destroy(struct wl_listener *listener, void *data)
2647 {
2648         struct desktop_shell *shell =
2649             container_of(listener, struct desktop_shell, lock_surface_listener);
2650
2651         weston_log("lock surface gone\n");
2652         shell->lock_surface = NULL;
2653 }
2654
2655 static void
2656 desktop_shell_set_lock_surface(struct wl_client *client,
2657                                struct wl_resource *resource,
2658                                struct wl_resource *surface_resource)
2659 {
2660         struct desktop_shell *shell = wl_resource_get_user_data(resource);
2661         struct weston_surface *surface =
2662                 wl_resource_get_user_data(surface_resource);
2663
2664         shell->prepare_event_sent = false;
2665
2666         if (!shell->locked)
2667                 return;
2668
2669         shell->lock_surface = surface;
2670
2671         shell->lock_surface_listener.notify = handle_lock_surface_destroy;
2672         wl_signal_add(&surface->destroy_signal,
2673                       &shell->lock_surface_listener);
2674
2675         surface->configure = lock_surface_configure;
2676         surface->configure_private = shell;
2677 }
2678
2679 static void
2680 resume_desktop(struct desktop_shell *shell)
2681 {
2682         struct workspace *ws = get_current_workspace(shell);
2683
2684         terminate_screensaver(shell);
2685
2686         wl_list_remove(&shell->lock_layer.link);
2687         wl_list_insert(&shell->compositor->cursor_layer.link,
2688                        &shell->fullscreen_layer.link);
2689         wl_list_insert(&shell->fullscreen_layer.link,
2690                        &shell->panel_layer.link);
2691         if (shell->showing_input_panels) {
2692                 wl_list_insert(&shell->panel_layer.link,
2693                                &shell->input_panel_layer.link);
2694                 wl_list_insert(&shell->input_panel_layer.link,
2695                                &ws->layer.link);
2696         } else {
2697                 wl_list_insert(&shell->panel_layer.link, &ws->layer.link);
2698         }
2699
2700         restore_focus_state(shell, get_current_workspace(shell));
2701
2702         shell->locked = false;
2703         shell_fade(shell, FADE_IN);
2704         weston_compositor_damage_all(shell->compositor);
2705 }
2706
2707 static void
2708 desktop_shell_unlock(struct wl_client *client,
2709                      struct wl_resource *resource)
2710 {
2711         struct desktop_shell *shell = wl_resource_get_user_data(resource);
2712
2713         shell->prepare_event_sent = false;
2714
2715         if (shell->locked)
2716                 resume_desktop(shell);
2717 }
2718
2719 static void
2720 desktop_shell_set_grab_surface(struct wl_client *client,
2721                                struct wl_resource *resource,
2722                                struct wl_resource *surface_resource)
2723 {
2724         struct desktop_shell *shell = wl_resource_get_user_data(resource);
2725
2726         shell->grab_surface = wl_resource_get_user_data(surface_resource);
2727 }
2728
2729 static void
2730 desktop_shell_desktop_ready(struct wl_client *client,
2731                             struct wl_resource *resource)
2732 {
2733         struct desktop_shell *shell = wl_resource_get_user_data(resource);
2734
2735         shell_fade_startup(shell);
2736 }
2737
2738 static const struct desktop_shell_interface desktop_shell_implementation = {
2739         desktop_shell_set_background,
2740         desktop_shell_set_panel,
2741         desktop_shell_set_lock_surface,
2742         desktop_shell_unlock,
2743         desktop_shell_set_grab_surface,
2744         desktop_shell_desktop_ready
2745 };
2746
2747 static enum shell_surface_type
2748 get_shell_surface_type(struct weston_surface *surface)
2749 {
2750         struct shell_surface *shsurf;
2751
2752         shsurf = get_shell_surface(surface);
2753         if (!shsurf)
2754                 return SHELL_SURFACE_NONE;
2755         return shsurf->type;
2756 }
2757
2758 static void
2759 move_binding(struct weston_seat *seat, uint32_t time, uint32_t button, void *data)
2760 {
2761         struct weston_surface *focus =
2762                 (struct weston_surface *) seat->pointer->focus;
2763         struct weston_surface *surface;
2764         struct shell_surface *shsurf;
2765
2766         surface = weston_surface_get_main_surface(focus);
2767         if (surface == NULL)
2768                 return;
2769
2770         shsurf = get_shell_surface(surface);
2771         if (shsurf == NULL || shsurf->type == SHELL_SURFACE_FULLSCREEN ||
2772             shsurf->type == SHELL_SURFACE_MAXIMIZED)
2773                 return;
2774
2775         surface_move(shsurf, (struct weston_seat *) seat);
2776 }
2777
2778 static void
2779 touch_move_binding(struct weston_seat *seat, uint32_t time, void *data)
2780 {
2781         struct weston_surface *focus =
2782                 (struct weston_surface *) seat->touch->focus;
2783         struct weston_surface *surface;
2784         struct shell_surface *shsurf;
2785
2786         surface = weston_surface_get_main_surface(focus);
2787         if (surface == NULL)
2788                 return;
2789
2790         shsurf = get_shell_surface(surface);
2791         if (shsurf == NULL || shsurf->type == SHELL_SURFACE_FULLSCREEN ||
2792             shsurf->type == SHELL_SURFACE_MAXIMIZED)
2793                 return;
2794
2795         surface_touch_move(shsurf, (struct weston_seat *) seat);
2796 }
2797
2798 static void
2799 resize_binding(struct weston_seat *seat, uint32_t time, uint32_t button, void *data)
2800 {
2801         struct weston_surface *focus =
2802                 (struct weston_surface *) seat->pointer->focus;
2803         struct weston_surface *surface;
2804         uint32_t edges = 0;
2805         int32_t x, y;
2806         struct shell_surface *shsurf;
2807
2808         surface = weston_surface_get_main_surface(focus);
2809         if (surface == NULL)
2810                 return;
2811
2812         shsurf = get_shell_surface(surface);
2813         if (!shsurf || shsurf->type == SHELL_SURFACE_FULLSCREEN ||
2814             shsurf->type == SHELL_SURFACE_MAXIMIZED)
2815                 return;
2816
2817         weston_surface_from_global(surface,
2818                                    wl_fixed_to_int(seat->pointer->grab_x),
2819                                    wl_fixed_to_int(seat->pointer->grab_y),
2820                                    &x, &y);
2821
2822         if (x < surface->geometry.width / 3)
2823                 edges |= WL_SHELL_SURFACE_RESIZE_LEFT;
2824         else if (x < 2 * surface->geometry.width / 3)
2825                 edges |= 0;
2826         else
2827                 edges |= WL_SHELL_SURFACE_RESIZE_RIGHT;
2828
2829         if (y < surface->geometry.height / 3)
2830                 edges |= WL_SHELL_SURFACE_RESIZE_TOP;
2831         else if (y < 2 * surface->geometry.height / 3)
2832                 edges |= 0;
2833         else
2834                 edges |= WL_SHELL_SURFACE_RESIZE_BOTTOM;
2835
2836         surface_resize(shsurf, (struct weston_seat *) seat, edges);
2837 }
2838
2839 static void
2840 surface_opacity_binding(struct weston_seat *seat, uint32_t time, uint32_t axis,
2841                         wl_fixed_t value, void *data)
2842 {
2843         float step = 0.005;
2844         struct shell_surface *shsurf;
2845         struct weston_surface *focus =
2846                 (struct weston_surface *) seat->pointer->focus;
2847         struct weston_surface *surface;
2848
2849         /* XXX: broken for windows containing sub-surfaces */
2850         surface = weston_surface_get_main_surface(focus);
2851         if (surface == NULL)
2852                 return;
2853
2854         shsurf = get_shell_surface(surface);
2855         if (!shsurf)
2856                 return;
2857
2858         surface->alpha -= wl_fixed_to_double(value) * step;
2859
2860         if (surface->alpha > 1.0)
2861                 surface->alpha = 1.0;
2862         if (surface->alpha < step)
2863                 surface->alpha = step;
2864
2865         weston_surface_geometry_dirty(surface);
2866         weston_surface_damage(surface);
2867 }
2868
2869 static void
2870 do_zoom(struct weston_seat *seat, uint32_t time, uint32_t key, uint32_t axis,
2871         wl_fixed_t value)
2872 {
2873         struct weston_seat *ws = (struct weston_seat *) seat;
2874         struct weston_compositor *compositor = ws->compositor;
2875         struct weston_output *output;
2876         float increment;
2877
2878         wl_list_for_each(output, &compositor->output_list, link) {
2879                 if (pixman_region32_contains_point(&output->region,
2880                                                    wl_fixed_to_double(seat->pointer->x),
2881                                                    wl_fixed_to_double(seat->pointer->y),
2882                                                    NULL)) {
2883                         if (key == KEY_PAGEUP)
2884                                 increment = output->zoom.increment;
2885                         else if (key == KEY_PAGEDOWN)
2886                                 increment = -output->zoom.increment;
2887                         else if (axis == WL_POINTER_AXIS_VERTICAL_SCROLL)
2888                                 /* For every pixel zoom 20th of a step */
2889                                 increment = output->zoom.increment *
2890                                             -wl_fixed_to_double(value) / 20.0;
2891                         else
2892                                 increment = 0;
2893
2894                         output->zoom.level += increment;
2895
2896                         if (output->zoom.level < 0.0)
2897                                 output->zoom.level = 0.0;
2898                         else if (output->zoom.level > output->zoom.max_level)
2899                                 output->zoom.level = output->zoom.max_level;
2900                         else if (!output->zoom.active) {
2901                                 output->zoom.active = 1;
2902                                 output->disable_planes++;
2903                         }
2904
2905                         output->zoom.spring_z.target = output->zoom.level;
2906
2907                         weston_output_update_zoom(output, output->zoom.type);
2908                 }
2909         }
2910 }
2911
2912 static void
2913 zoom_axis_binding(struct weston_seat *seat, uint32_t time, uint32_t axis,
2914                   wl_fixed_t value, void *data)
2915 {
2916         do_zoom(seat, time, 0, axis, value);
2917 }
2918
2919 static void
2920 zoom_key_binding(struct weston_seat *seat, uint32_t time, uint32_t key,
2921                  void *data)
2922 {
2923         do_zoom(seat, time, key, 0, 0);
2924 }
2925
2926 static void
2927 terminate_binding(struct weston_seat *seat, uint32_t time, uint32_t key,
2928                   void *data)
2929 {
2930         struct weston_compositor *compositor = data;
2931
2932         wl_display_terminate(compositor->wl_display);
2933 }
2934
2935 static void
2936 rotate_grab_motion(struct weston_pointer_grab *grab, uint32_t time)
2937 {
2938         struct rotate_grab *rotate =
2939                 container_of(grab, struct rotate_grab, base.grab);
2940         struct weston_pointer *pointer = grab->pointer;
2941         struct shell_surface *shsurf = rotate->base.shsurf;
2942         struct weston_surface *surface;
2943         float cx, cy, dx, dy, cposx, cposy, dposx, dposy, r;
2944
2945         if (!shsurf)
2946                 return;
2947
2948         surface = shsurf->surface;
2949
2950         cx = 0.5f * surface->geometry.width;
2951         cy = 0.5f * surface->geometry.height;
2952
2953         dx = wl_fixed_to_double(pointer->x) - rotate->center.x;
2954         dy = wl_fixed_to_double(pointer->y) - rotate->center.y;
2955         r = sqrtf(dx * dx + dy * dy);
2956
2957         wl_list_remove(&shsurf->rotation.transform.link);
2958         weston_surface_geometry_dirty(shsurf->surface);
2959
2960         if (r > 20.0f) {
2961                 struct weston_matrix *matrix =
2962                         &shsurf->rotation.transform.matrix;
2963
2964                 weston_matrix_init(&rotate->rotation);
2965                 weston_matrix_rotate_xy(&rotate->rotation, dx / r, dy / r);
2966
2967                 weston_matrix_init(matrix);
2968                 weston_matrix_translate(matrix, -cx, -cy, 0.0f);
2969                 weston_matrix_multiply(matrix, &shsurf->rotation.rotation);
2970                 weston_matrix_multiply(matrix, &rotate->rotation);
2971                 weston_matrix_translate(matrix, cx, cy, 0.0f);
2972
2973                 wl_list_insert(
2974                         &shsurf->surface->geometry.transformation_list,
2975                         &shsurf->rotation.transform.link);
2976         } else {
2977                 wl_list_init(&shsurf->rotation.transform.link);
2978                 weston_matrix_init(&shsurf->rotation.rotation);
2979                 weston_matrix_init(&rotate->rotation);
2980         }
2981
2982         /* We need to adjust the position of the surface
2983          * in case it was resized in a rotated state before */
2984         cposx = surface->geometry.x + cx;
2985         cposy = surface->geometry.y + cy;
2986         dposx = rotate->center.x - cposx;
2987         dposy = rotate->center.y - cposy;
2988         if (dposx != 0.0f || dposy != 0.0f) {
2989                 weston_surface_set_position(surface,
2990                                             surface->geometry.x + dposx,
2991                                             surface->geometry.y + dposy);
2992         }
2993
2994         /* Repaint implies weston_surface_update_transform(), which
2995          * lazily applies the damage due to rotation update.
2996          */
2997         weston_compositor_schedule_repaint(shsurf->surface->compositor);
2998 }
2999
3000 static void
3001 rotate_grab_button(struct weston_pointer_grab *grab,
3002                    uint32_t time, uint32_t button, uint32_t state_w)
3003 {
3004         struct rotate_grab *rotate =
3005                 container_of(grab, struct rotate_grab, base.grab);
3006         struct weston_pointer *pointer = grab->pointer;
3007         struct shell_surface *shsurf = rotate->base.shsurf;
3008         enum wl_pointer_button_state state = state_w;
3009
3010         if (pointer->button_count == 0 &&
3011             state == WL_POINTER_BUTTON_STATE_RELEASED) {
3012                 if (shsurf)
3013                         weston_matrix_multiply(&shsurf->rotation.rotation,
3014                                                &rotate->rotation);
3015                 shell_grab_end(&rotate->base);
3016                 free(rotate);
3017         }
3018 }
3019
3020 static const struct weston_pointer_grab_interface rotate_grab_interface = {
3021         noop_grab_focus,
3022         rotate_grab_motion,
3023         rotate_grab_button,
3024 };
3025
3026 static void
3027 surface_rotate(struct shell_surface *surface, struct weston_seat *seat)
3028 {
3029         struct rotate_grab *rotate;
3030         float dx, dy;
3031         float r;
3032
3033         rotate = malloc(sizeof *rotate);
3034         if (!rotate)
3035                 return;
3036
3037         weston_surface_to_global_float(surface->surface,
3038                                        surface->surface->geometry.width * 0.5f,
3039                                        surface->surface->geometry.height * 0.5f,
3040                                        &rotate->center.x, &rotate->center.y);
3041
3042         dx = wl_fixed_to_double(seat->pointer->x) - rotate->center.x;
3043         dy = wl_fixed_to_double(seat->pointer->y) - rotate->center.y;
3044         r = sqrtf(dx * dx + dy * dy);
3045         if (r > 20.0f) {
3046                 struct weston_matrix inverse;
3047
3048                 weston_matrix_init(&inverse);
3049                 weston_matrix_rotate_xy(&inverse, dx / r, -dy / r);
3050                 weston_matrix_multiply(&surface->rotation.rotation, &inverse);
3051
3052                 weston_matrix_init(&rotate->rotation);
3053                 weston_matrix_rotate_xy(&rotate->rotation, dx / r, dy / r);
3054         } else {
3055                 weston_matrix_init(&surface->rotation.rotation);
3056                 weston_matrix_init(&rotate->rotation);
3057         }
3058
3059         shell_grab_start(&rotate->base, &rotate_grab_interface, surface,
3060                          seat->pointer, DESKTOP_SHELL_CURSOR_ARROW);
3061 }
3062
3063 static void
3064 rotate_binding(struct weston_seat *seat, uint32_t time, uint32_t button,
3065                void *data)
3066 {
3067         struct weston_surface *focus =
3068                 (struct weston_surface *) seat->pointer->focus;
3069         struct weston_surface *base_surface;
3070         struct shell_surface *surface;
3071
3072         base_surface = weston_surface_get_main_surface(focus);
3073         if (base_surface == NULL)
3074                 return;
3075
3076         surface = get_shell_surface(base_surface);
3077         if (!surface || surface->type == SHELL_SURFACE_FULLSCREEN ||
3078             surface->type == SHELL_SURFACE_MAXIMIZED)
3079                 return;
3080
3081         surface_rotate(surface, seat);
3082 }
3083
3084 static void
3085 lower_fullscreen_layer(struct desktop_shell *shell)
3086 {
3087         struct workspace *ws;
3088         struct weston_surface *surface, *prev;
3089
3090         ws = get_current_workspace(shell);
3091         wl_list_for_each_reverse_safe(surface, prev,
3092                                       &shell->fullscreen_layer.surface_list,
3093                                       layer_link)
3094                 weston_surface_restack(surface, &ws->layer.surface_list);
3095 }
3096
3097 static void
3098 activate(struct desktop_shell *shell, struct weston_surface *es,
3099          struct weston_seat *seat)
3100 {
3101         struct weston_surface *main_surface;
3102         struct focus_state *state;
3103         struct workspace *ws;
3104
3105         main_surface = weston_surface_get_main_surface(es);
3106
3107         weston_surface_activate(es, seat);
3108
3109         state = ensure_focus_state(shell, seat);
3110         if (state == NULL)
3111                 return;
3112
3113         state->keyboard_focus = es;
3114         wl_list_remove(&state->surface_destroy_listener.link);
3115         wl_signal_add(&es->destroy_signal, &state->surface_destroy_listener);
3116
3117         switch (get_shell_surface_type(main_surface)) {
3118         case SHELL_SURFACE_FULLSCREEN:
3119                 /* should on top of panels */
3120                 shell_stack_fullscreen(get_shell_surface(main_surface));
3121                 shell_configure_fullscreen(get_shell_surface(main_surface));
3122                 break;
3123         default:
3124                 restore_all_output_modes(shell->compositor);
3125                 ws = get_current_workspace(shell);
3126                 weston_surface_restack(main_surface, &ws->layer.surface_list);
3127                 break;
3128         }
3129 }
3130
3131 /* no-op func for checking black surface */
3132 static void
3133 black_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy, int32_t width, int32_t height)
3134 {
3135 }
3136
3137 static bool
3138 is_black_surface (struct weston_surface *es, struct weston_surface **fs_surface)
3139 {
3140         if (es->configure == black_surface_configure) {
3141                 if (fs_surface)
3142                         *fs_surface = (struct weston_surface *)es->configure_private;
3143                 return true;
3144         }
3145         return false;
3146 }
3147
3148 static void
3149 activate_binding(struct weston_seat *seat,
3150                  struct desktop_shell *shell,
3151                  struct weston_surface *focus)
3152 {
3153         struct weston_surface *main_surface;
3154
3155         if (!focus)
3156                 return;
3157
3158         if (is_black_surface(focus, &main_surface))
3159                 focus = main_surface;
3160
3161         main_surface = weston_surface_get_main_surface(focus);
3162         if (get_shell_surface_type(main_surface) == SHELL_SURFACE_NONE)
3163                 return;
3164
3165         activate(shell, focus, seat);
3166 }
3167
3168 static void
3169 click_to_activate_binding(struct weston_seat *seat, uint32_t time, uint32_t button,
3170                           void *data)
3171 {
3172         if (seat->pointer->grab != &seat->pointer->default_grab)
3173                 return;
3174
3175         activate_binding(seat, data,
3176                          (struct weston_surface *) seat->pointer->focus);
3177 }
3178
3179 static void
3180 touch_to_activate_binding(struct weston_seat *seat, uint32_t time, void *data)
3181 {
3182         if (seat->touch->grab != &seat->touch->default_grab)
3183                 return;
3184
3185         activate_binding(seat, data,
3186                          (struct weston_surface *) seat->touch->focus);
3187 }
3188
3189 static void
3190 lock(struct desktop_shell *shell)
3191 {
3192         struct workspace *ws = get_current_workspace(shell);
3193
3194         if (shell->locked) {
3195                 weston_compositor_sleep(shell->compositor);
3196                 return;
3197         }
3198
3199         shell->locked = true;
3200
3201         /* Hide all surfaces by removing the fullscreen, panel and
3202          * toplevel layers.  This way nothing else can show or receive
3203          * input events while we are locked. */
3204
3205         wl_list_remove(&shell->panel_layer.link);
3206         wl_list_remove(&shell->fullscreen_layer.link);
3207         if (shell->showing_input_panels)
3208                 wl_list_remove(&shell->input_panel_layer.link);
3209         wl_list_remove(&ws->layer.link);
3210         wl_list_insert(&shell->compositor->cursor_layer.link,
3211                        &shell->lock_layer.link);
3212
3213         launch_screensaver(shell);
3214
3215         /* TODO: disable bindings that should not work while locked. */
3216
3217         /* All this must be undone in resume_desktop(). */
3218 }
3219
3220 static void
3221 unlock(struct desktop_shell *shell)
3222 {
3223         if (!shell->locked || shell->lock_surface) {
3224                 shell_fade(shell, FADE_IN);
3225                 return;
3226         }
3227
3228         /* If desktop-shell client has gone away, unlock immediately. */
3229         if (!shell->child.desktop_shell) {
3230                 resume_desktop(shell);
3231                 return;
3232         }
3233
3234         if (shell->prepare_event_sent)
3235                 return;
3236
3237         desktop_shell_send_prepare_lock_surface(shell->child.desktop_shell);
3238         shell->prepare_event_sent = true;
3239 }
3240
3241 static void
3242 shell_fade_done(struct weston_surface_animation *animation, void *data)
3243 {
3244         struct desktop_shell *shell = data;
3245
3246         shell->fade.animation = NULL;
3247
3248         switch (shell->fade.type) {
3249         case FADE_IN:
3250                 weston_surface_destroy(shell->fade.surface);
3251                 shell->fade.surface = NULL;
3252                 break;
3253         case FADE_OUT:
3254                 lock(shell);
3255                 break;
3256         }
3257 }
3258
3259 static struct weston_surface *
3260 shell_fade_create_surface(struct desktop_shell *shell)
3261 {
3262         struct weston_compositor *compositor = shell->compositor;
3263         struct weston_surface *surface;
3264
3265         surface = weston_surface_create(compositor);
3266         if (!surface)
3267                 return NULL;
3268
3269         weston_surface_configure(surface, 0, 0, 8192, 8192);
3270         weston_surface_set_color(surface, 0.0, 0.0, 0.0, 1.0);
3271         wl_list_insert(&compositor->fade_layer.surface_list,
3272                        &surface->layer_link);
3273         pixman_region32_init(&surface->input);
3274
3275         return surface;
3276 }
3277
3278 static void
3279 shell_fade(struct desktop_shell *shell, enum fade_type type)
3280 {
3281         float tint;
3282
3283         switch (type) {
3284         case FADE_IN:
3285                 tint = 0.0;
3286                 break;
3287         case FADE_OUT:
3288                 tint = 1.0;
3289                 break;
3290         default:
3291                 weston_log("shell: invalid fade type\n");
3292                 return;
3293         }
3294
3295         shell->fade.type = type;
3296
3297         if (shell->fade.surface == NULL) {
3298                 shell->fade.surface = shell_fade_create_surface(shell);
3299                 if (!shell->fade.surface)
3300                         return;
3301
3302                 shell->fade.surface->alpha = 1.0 - tint;
3303                 weston_surface_update_transform(shell->fade.surface);
3304         }
3305
3306         if (shell->fade.animation)
3307                 weston_fade_update(shell->fade.animation, tint);
3308         else
3309                 shell->fade.animation =
3310                         weston_fade_run(shell->fade.surface,
3311                                         1.0 - tint, tint, 300.0,
3312                                         shell_fade_done, shell);
3313 }
3314
3315 static void
3316 do_shell_fade_startup(void *data)
3317 {
3318         struct desktop_shell *shell = data;
3319
3320         shell_fade(shell, FADE_IN);
3321 }
3322
3323 static void
3324 shell_fade_startup(struct desktop_shell *shell)
3325 {
3326         struct wl_event_loop *loop;
3327
3328         if (!shell->fade.startup_timer)
3329                 return;
3330
3331         wl_event_source_remove(shell->fade.startup_timer);
3332         shell->fade.startup_timer = NULL;
3333
3334         loop = wl_display_get_event_loop(shell->compositor->wl_display);
3335         wl_event_loop_add_idle(loop, do_shell_fade_startup, shell);
3336 }
3337
3338 static int
3339 fade_startup_timeout(void *data)
3340 {
3341         struct desktop_shell *shell = data;
3342
3343         shell_fade_startup(shell);
3344         return 0;
3345 }
3346
3347 static void
3348 shell_fade_init(struct desktop_shell *shell)
3349 {
3350         /* Make compositor output all black, and wait for the desktop-shell
3351          * client to signal it is ready, then fade in. The timer triggers a
3352          * fade-in, in case the desktop-shell client takes too long.
3353          */
3354
3355         struct wl_event_loop *loop;
3356
3357         if (shell->fade.surface != NULL) {
3358                 weston_log("%s: warning: fade surface already exists\n",
3359                            __func__);
3360                 return;
3361         }
3362
3363         shell->fade.surface = shell_fade_create_surface(shell);
3364         if (!shell->fade.surface)
3365                 return;
3366
3367         weston_surface_update_transform(shell->fade.surface);
3368         weston_surface_damage(shell->fade.surface);
3369
3370         loop = wl_display_get_event_loop(shell->compositor->wl_display);
3371         shell->fade.startup_timer =
3372                 wl_event_loop_add_timer(loop, fade_startup_timeout, shell);
3373         wl_event_source_timer_update(shell->fade.startup_timer, 15000);
3374 }
3375
3376 static void
3377 idle_handler(struct wl_listener *listener, void *data)
3378 {
3379         struct desktop_shell *shell =
3380                 container_of(listener, struct desktop_shell, idle_listener);
3381
3382         shell_fade(shell, FADE_OUT);
3383         /* lock() is called from shell_fade_done() */
3384 }
3385
3386 static void
3387 wake_handler(struct wl_listener *listener, void *data)
3388 {
3389         struct desktop_shell *shell =
3390                 container_of(listener, struct desktop_shell, wake_listener);
3391
3392         unlock(shell);
3393 }
3394
3395 static void
3396 show_input_panels(struct wl_listener *listener, void *data)
3397 {
3398         struct desktop_shell *shell =
3399                 container_of(listener, struct desktop_shell,
3400                              show_input_panel_listener);
3401         struct input_panel_surface *surface, *next;
3402         struct weston_surface *ws;
3403
3404         shell->text_input.surface = (struct weston_surface*)data;
3405
3406         if (shell->showing_input_panels)
3407                 return;
3408
3409         shell->showing_input_panels = true;
3410
3411         if (!shell->locked)
3412                 wl_list_insert(&shell->panel_layer.link,
3413                                &shell->input_panel_layer.link);
3414
3415         wl_list_for_each_safe(surface, next,
3416                               &shell->input_panel.surfaces, link) {
3417                 ws = surface->surface;
3418                 if (!ws->buffer_ref.buffer)
3419                         continue;
3420                 wl_list_insert(&shell->input_panel_layer.surface_list,
3421                                &ws->layer_link);
3422                 weston_surface_geometry_dirty(ws);
3423                 weston_surface_update_transform(ws);
3424                 weston_surface_damage(ws);
3425                 weston_slide_run(ws, ws->geometry.height, 0, NULL, NULL);
3426         }
3427 }
3428
3429 static void
3430 hide_input_panels(struct wl_listener *listener, void *data)
3431 {
3432         struct desktop_shell *shell =
3433                 container_of(listener, struct desktop_shell,
3434                              hide_input_panel_listener);
3435         struct weston_surface *surface, *next;
3436
3437         if (!shell->showing_input_panels)
3438                 return;
3439
3440         shell->showing_input_panels = false;
3441
3442         if (!shell->locked)
3443                 wl_list_remove(&shell->input_panel_layer.link);
3444
3445         wl_list_for_each_safe(surface, next,
3446                               &shell->input_panel_layer.surface_list, layer_link)
3447                 weston_surface_unmap(surface);
3448 }
3449
3450 static void
3451 update_input_panels(struct wl_listener *listener, void *data)
3452 {
3453         struct desktop_shell *shell =
3454                 container_of(listener, struct desktop_shell,
3455                              update_input_panel_listener);
3456
3457         memcpy(&shell->text_input.cursor_rectangle, data, sizeof(pixman_box32_t));
3458 }
3459
3460 static void
3461 center_on_output(struct weston_surface *surface, struct weston_output *output)
3462 {
3463         int32_t surf_x, surf_y, width, height;
3464         float x, y;
3465
3466         surface_subsurfaces_boundingbox(surface, &surf_x, &surf_y, &width, &height);
3467
3468         x = output->x + (output->width - width) / 2 - surf_x / 2;
3469         y = output->y + (output->height - height) / 2 - surf_y / 2;
3470
3471         weston_surface_configure(surface, x, y, width, height);
3472 }
3473
3474 static void
3475 weston_surface_set_initial_position (struct weston_surface *surface,
3476                                      struct desktop_shell *shell)
3477 {
3478         struct weston_compositor *compositor = shell->compositor;
3479         int ix = 0, iy = 0;
3480         int range_x, range_y;
3481         int dx, dy, x, y, panel_height;
3482         struct weston_output *output, *target_output = NULL;
3483         struct weston_seat *seat;
3484
3485         /* As a heuristic place the new window on the same output as the
3486          * pointer. Falling back to the output containing 0, 0.
3487          *
3488          * TODO: Do something clever for touch too?
3489          */
3490         wl_list_for_each(seat, &compositor->seat_list, link) {
3491                 if (seat->pointer) {
3492                         ix = wl_fixed_to_int(seat->pointer->x);
3493                         iy = wl_fixed_to_int(seat->pointer->y);
3494                         break;
3495                 }
3496         }
3497
3498         wl_list_for_each(output, &compositor->output_list, link) {
3499                 if (pixman_region32_contains_point(&output->region, ix, iy, NULL)) {
3500                         target_output = output;
3501                         break;
3502                 }
3503         }
3504
3505         if (!target_output) {
3506                 weston_surface_set_position(surface, 10 + random() % 400,
3507                                            10 + random() % 400);
3508                 return;
3509         }
3510
3511         /* Valid range within output where the surface will still be onscreen.
3512          * If this is negative it means that the surface is bigger than
3513          * output.
3514          */
3515         panel_height = get_output_panel_height(shell, target_output);
3516         range_x = target_output->width - surface->geometry.width;
3517         range_y = (target_output->height - panel_height) -
3518                   surface->geometry.height;
3519
3520         if (range_x > 0)
3521                 dx = random() % range_x;
3522         else
3523                 dx = 0;
3524
3525         if (range_y > 0)
3526                 dy = panel_height + random() % range_y;
3527         else
3528                 dy = panel_height;
3529
3530         x = target_output->x + dx;
3531         y = target_output->y + dy;
3532
3533         weston_surface_set_position (surface, x, y);
3534 }
3535
3536 static void
3537 map(struct desktop_shell *shell, struct weston_surface *surface,
3538     int32_t width, int32_t height, int32_t sx, int32_t sy)
3539 {
3540         struct weston_compositor *compositor = shell->compositor;
3541         struct shell_surface *shsurf = get_shell_surface(surface);
3542         enum shell_surface_type surface_type = shsurf->type;
3543         struct weston_surface *parent;
3544         struct weston_seat *seat;
3545         struct workspace *ws;
3546         int panel_height = 0;
3547         int32_t surf_x, surf_y;
3548
3549         surface->geometry.width = width;
3550         surface->geometry.height = height;
3551         weston_surface_geometry_dirty(surface);
3552
3553         /* initial positioning, see also configure() */
3554         switch (surface_type) {
3555         case SHELL_SURFACE_TOPLEVEL:
3556                 weston_surface_set_initial_position(surface, shell);
3557                 break;
3558         case SHELL_SURFACE_FULLSCREEN:
3559                 center_on_output(surface, shsurf->fullscreen_output);
3560                 shell_map_fullscreen(shsurf);
3561                 break;
3562         case SHELL_SURFACE_MAXIMIZED:
3563                 /* use surface configure to set the geometry */
3564                 panel_height = get_output_panel_height(shell,surface->output);
3565                 surface_subsurfaces_boundingbox(shsurf->surface, &surf_x, &surf_y,
3566                                                                  NULL, NULL);
3567                 weston_surface_set_position(surface, shsurf->output->x - surf_x,
3568                                             shsurf->output->y + panel_height - surf_y);
3569                 break;
3570         case SHELL_SURFACE_POPUP:
3571                 shell_map_popup(shsurf);
3572                 break;
3573         case SHELL_SURFACE_NONE:
3574                 weston_surface_set_position(surface,
3575                                             surface->geometry.x + sx,
3576                                             surface->geometry.y + sy);
3577                 break;
3578         default:
3579                 ;
3580         }
3581
3582         /* surface stacking order, see also activate() */
3583         switch (surface_type) {
3584         case SHELL_SURFACE_POPUP:
3585         case SHELL_SURFACE_TRANSIENT:
3586                 parent = shsurf->parent;
3587                 wl_list_insert(parent->layer_link.prev, &surface->layer_link);
3588                 break;
3589         case SHELL_SURFACE_FULLSCREEN:
3590         case SHELL_SURFACE_NONE:
3591                 break;
3592         case SHELL_SURFACE_XWAYLAND:
3593         default:
3594                 ws = get_current_workspace(shell);
3595                 wl_list_insert(&ws->layer.surface_list, &surface->layer_link);
3596                 break;
3597         }
3598
3599         if (surface_type != SHELL_SURFACE_NONE) {
3600                 weston_surface_update_transform(surface);
3601                 if (surface_type == SHELL_SURFACE_MAXIMIZED)
3602                         surface->output = shsurf->output;
3603         }
3604
3605         switch (surface_type) {
3606         /* XXX: xwayland's using the same fields for transient type */
3607         case SHELL_SURFACE_XWAYLAND:
3608         case SHELL_SURFACE_TRANSIENT:
3609                 if (shsurf->transient.flags ==
3610                                 WL_SHELL_SURFACE_TRANSIENT_INACTIVE)
3611                         break;
3612         case SHELL_SURFACE_TOPLEVEL:
3613         case SHELL_SURFACE_FULLSCREEN:
3614         case SHELL_SURFACE_MAXIMIZED:
3615                 if (!shell->locked) {
3616                         wl_list_for_each(seat, &compositor->seat_list, link)
3617                                 activate(shell, surface, seat);
3618                 }
3619                 break;
3620         default:
3621                 break;
3622         }
3623
3624         if (surface_type == SHELL_SURFACE_TOPLEVEL)
3625         {
3626                 switch (shell->win_animation_type) {
3627                 case ANIMATION_FADE:
3628                         weston_fade_run(surface, 0.0, 1.0, 300.0, NULL, NULL);
3629                         break;
3630                 case ANIMATION_ZOOM:
3631                         weston_zoom_run(surface, 0.5, 1.0, NULL, NULL);
3632                         break;
3633                 default:
3634                         break;
3635                 }
3636         }
3637 }
3638
3639 static void
3640 configure(struct desktop_shell *shell, struct weston_surface *surface,
3641           float x, float y, int32_t width, int32_t height)
3642 {
3643         enum shell_surface_type surface_type = SHELL_SURFACE_NONE;
3644         struct shell_surface *shsurf;
3645         int32_t surf_x, surf_y;
3646
3647         shsurf = get_shell_surface(surface);
3648         if (shsurf)
3649                 surface_type = shsurf->type;
3650
3651         weston_surface_configure(surface, x, y, width, height);
3652
3653         switch (surface_type) {
3654         case SHELL_SURFACE_FULLSCREEN:
3655                 shell_stack_fullscreen(shsurf);
3656                 shell_configure_fullscreen(shsurf);
3657                 break;
3658         case SHELL_SURFACE_MAXIMIZED:
3659                 /* setting x, y and using configure to change that geometry */
3660                 surface_subsurfaces_boundingbox(shsurf->surface, &surf_x, &surf_y,
3661                                                                  NULL, NULL);
3662                 surface->geometry.x = surface->output->x - surf_x;
3663                 surface->geometry.y = surface->output->y +
3664                 get_output_panel_height(shell,surface->output) - surf_y;
3665                 break;
3666         case SHELL_SURFACE_TOPLEVEL:
3667                 break;
3668         default:
3669                 break;
3670         }
3671
3672         /* XXX: would a fullscreen surface need the same handling? */
3673         if (surface->output) {
3674                 weston_surface_update_transform(surface);
3675
3676                 if (surface_type == SHELL_SURFACE_MAXIMIZED)
3677                         surface->output = shsurf->output;
3678         }
3679 }
3680
3681 static void
3682 shell_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy, int32_t width, int32_t height)
3683 {
3684         struct shell_surface *shsurf = get_shell_surface(es);
3685         struct desktop_shell *shell = shsurf->shell;
3686
3687         int type_changed = 0;
3688
3689         if (!weston_surface_is_mapped(es) &&
3690             !wl_list_empty(&shsurf->popup.grab_link)) {
3691                 remove_popup_grab(shsurf);
3692         }
3693
3694         if (width == 0)
3695                 return;
3696
3697         if (shsurf->next_type != SHELL_SURFACE_NONE &&
3698             shsurf->type != shsurf->next_type) {
3699                 set_surface_type(shsurf);
3700                 type_changed = 1;
3701         }
3702
3703         if (!weston_surface_is_mapped(es)) {
3704                 map(shell, es, width, height, sx, sy);
3705         } else if (type_changed || sx != 0 || sy != 0 ||
3706                    es->geometry.width != width ||
3707                    es->geometry.height != height) {
3708                 float from_x, from_y;
3709                 float to_x, to_y;
3710
3711                 weston_surface_to_global_float(es, 0, 0, &from_x, &from_y);
3712                 weston_surface_to_global_float(es, sx, sy, &to_x, &to_y);
3713                 configure(shell, es,
3714                           es->geometry.x + to_x - from_x,
3715                           es->geometry.y + to_y - from_y,
3716                           width, height);
3717         }
3718 }
3719
3720 static void launch_desktop_shell_process(void *data);
3721
3722 static void
3723 desktop_shell_sigchld(struct weston_process *process, int status)
3724 {
3725         uint32_t time;
3726         struct desktop_shell *shell =
3727                 container_of(process, struct desktop_shell, child.process);
3728
3729         shell->child.process.pid = 0;
3730         shell->child.client = NULL; /* already destroyed by wayland */
3731
3732         /* if desktop-shell dies more than 5 times in 30 seconds, give up */
3733         time = weston_compositor_get_time();
3734         if (time - shell->child.deathstamp > 30000) {
3735                 shell->child.deathstamp = time;
3736                 shell->child.deathcount = 0;
3737         }
3738
3739         shell->child.deathcount++;
3740         if (shell->child.deathcount > 5) {
3741                 weston_log("weston-desktop-shell died, giving up.\n");
3742                 return;
3743         }
3744
3745         weston_log("weston-desktop-shell died, respawning...\n");
3746         launch_desktop_shell_process(shell);
3747         shell_fade_startup(shell);
3748 }
3749
3750 static void
3751 launch_desktop_shell_process(void *data)
3752 {
3753         struct desktop_shell *shell = data;
3754         const char *shell_exe = LIBEXECDIR "/weston-desktop-shell";
3755
3756         shell->child.client = weston_client_launch(shell->compositor,
3757                                                  &shell->child.process,
3758                                                  shell_exe,
3759                                                  desktop_shell_sigchld);
3760
3761         if (!shell->child.client)
3762                 weston_log("not able to start %s\n", shell_exe);
3763 }
3764
3765 static void
3766 bind_shell(struct wl_client *client, void *data, uint32_t version, uint32_t id)
3767 {
3768         struct desktop_shell *shell = data;
3769         struct wl_resource *resource;
3770
3771         resource = wl_resource_create(client, &wl_shell_interface, 1, id);
3772         if (resource)
3773                 wl_resource_set_implementation(resource, &shell_implementation,
3774                                                shell, NULL);
3775 }
3776
3777 static void
3778 unbind_desktop_shell(struct wl_resource *resource)
3779 {
3780         struct desktop_shell *shell = wl_resource_get_user_data(resource);
3781
3782         if (shell->locked)
3783                 resume_desktop(shell);
3784
3785         shell->child.desktop_shell = NULL;
3786         shell->prepare_event_sent = false;
3787 }
3788
3789 static void
3790 bind_desktop_shell(struct wl_client *client,
3791                    void *data, uint32_t version, uint32_t id)
3792 {
3793         struct desktop_shell *shell = data;
3794         struct wl_resource *resource;
3795
3796         resource = wl_resource_create(client, &desktop_shell_interface,
3797                                       MIN(version, 2), id);
3798
3799         if (client == shell->child.client) {
3800                 wl_resource_set_implementation(resource,
3801                                                &desktop_shell_implementation,
3802                                                shell, unbind_desktop_shell);
3803                 shell->child.desktop_shell = resource;
3804
3805                 if (version < 2)
3806                         shell_fade_startup(shell);
3807
3808                 return;
3809         }
3810
3811         wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
3812                                "permission to bind desktop_shell denied");
3813         wl_resource_destroy(resource);
3814 }
3815
3816 static void
3817 screensaver_configure(struct weston_surface *surface, int32_t sx, int32_t sy, int32_t width, int32_t height)
3818 {
3819         struct desktop_shell *shell = surface->configure_private;
3820
3821         if (width == 0)
3822                 return;
3823
3824         /* XXX: starting weston-screensaver beforehand does not work */
3825         if (!shell->locked)
3826                 return;
3827
3828         center_on_output(surface, surface->output);
3829
3830         if (wl_list_empty(&surface->layer_link)) {
3831                 wl_list_insert(shell->lock_layer.surface_list.prev,
3832                                &surface->layer_link);
3833                 weston_surface_update_transform(surface);
3834                 wl_event_source_timer_update(shell->screensaver.timer,
3835                                              shell->screensaver.duration);
3836                 shell_fade(shell, FADE_IN);
3837         }
3838 }
3839
3840 static void
3841 screensaver_set_surface(struct wl_client *client,
3842                         struct wl_resource *resource,
3843                         struct wl_resource *surface_resource,
3844                         struct wl_resource *output_resource)
3845 {
3846         struct desktop_shell *shell = wl_resource_get_user_data(resource);
3847         struct weston_surface *surface =
3848                 wl_resource_get_user_data(surface_resource);
3849         struct weston_output *output = wl_resource_get_user_data(output_resource);
3850
3851         surface->configure = screensaver_configure;
3852         surface->configure_private = shell;
3853         surface->output = output;
3854 }
3855
3856 static const struct screensaver_interface screensaver_implementation = {
3857         screensaver_set_surface
3858 };
3859
3860 static void
3861 unbind_screensaver(struct wl_resource *resource)
3862 {
3863         struct desktop_shell *shell = wl_resource_get_user_data(resource);
3864
3865         shell->screensaver.binding = NULL;
3866 }
3867
3868 static void
3869 bind_screensaver(struct wl_client *client,
3870                  void *data, uint32_t version, uint32_t id)
3871 {
3872         struct desktop_shell *shell = data;
3873         struct wl_resource *resource;
3874
3875         resource = wl_resource_create(client, &screensaver_interface, 1, id);
3876
3877         if (shell->screensaver.binding == NULL) {
3878                 wl_resource_set_implementation(resource,
3879                                                &screensaver_implementation,
3880                                                shell, unbind_screensaver);
3881                 shell->screensaver.binding = resource;
3882                 return;
3883         }
3884
3885         wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
3886                                "interface object already bound");
3887         wl_resource_destroy(resource);
3888 }
3889
3890 static void
3891 input_panel_configure(struct weston_surface *surface, int32_t sx, int32_t sy, int32_t width, int32_t height)
3892 {
3893         struct input_panel_surface *ip_surface = surface->configure_private;
3894         struct desktop_shell *shell = ip_surface->shell;
3895         float x, y;
3896         uint32_t show_surface = 0;
3897
3898         if (width == 0)
3899                 return;
3900
3901         if (!weston_surface_is_mapped(surface)) {
3902                 if (!shell->showing_input_panels)
3903                         return;
3904
3905                 show_surface = 1;
3906         }
3907
3908         fprintf(stderr, "%s panel: %d, output: %p\n", __FUNCTION__, ip_surface->panel, ip_surface->output);
3909
3910         if (ip_surface->panel) {
3911                 x = shell->text_input.surface->geometry.x + shell->text_input.cursor_rectangle.x2;
3912                 y = shell->text_input.surface->geometry.y + shell->text_input.cursor_rectangle.y2;
3913         } else {
3914                 x = ip_surface->output->x + (ip_surface->output->width - width) / 2;
3915                 y = ip_surface->output->y + ip_surface->output->height - height;
3916         }
3917
3918         weston_surface_configure(surface,
3919                                  x, y,
3920                                  width, height);
3921
3922         if (show_surface) {
3923                 wl_list_insert(&shell->input_panel_layer.surface_list,
3924                                &surface->layer_link);
3925                 weston_surface_update_transform(surface);
3926                 weston_surface_damage(surface);
3927                 weston_slide_run(surface, surface->geometry.height, 0, NULL, NULL);
3928         }
3929 }
3930
3931 static void
3932 destroy_input_panel_surface(struct input_panel_surface *input_panel_surface)
3933 {
3934         wl_signal_emit(&input_panel_surface->destroy_signal, input_panel_surface);
3935
3936         wl_list_remove(&input_panel_surface->surface_destroy_listener.link);
3937         wl_list_remove(&input_panel_surface->link);
3938
3939         input_panel_surface->surface->configure = NULL;
3940
3941         free(input_panel_surface);
3942 }
3943
3944 static struct input_panel_surface *
3945 get_input_panel_surface(struct weston_surface *surface)
3946 {
3947         if (surface->configure == input_panel_configure) {
3948                 return surface->configure_private;
3949         } else {
3950                 return NULL;
3951         }
3952 }
3953
3954 static void
3955 input_panel_handle_surface_destroy(struct wl_listener *listener, void *data)
3956 {
3957         struct input_panel_surface *ipsurface = container_of(listener,
3958                                                              struct input_panel_surface,
3959                                                              surface_destroy_listener);
3960
3961         if (ipsurface->resource) {
3962                 wl_resource_destroy(ipsurface->resource);
3963         } else {
3964                 destroy_input_panel_surface(ipsurface);
3965         }
3966 }
3967
3968 static struct input_panel_surface *
3969 create_input_panel_surface(struct desktop_shell *shell,
3970                            struct weston_surface *surface)
3971 {
3972         struct input_panel_surface *input_panel_surface;
3973
3974         input_panel_surface = calloc(1, sizeof *input_panel_surface);
3975         if (!input_panel_surface)
3976                 return NULL;
3977
3978         surface->configure = input_panel_configure;
3979         surface->configure_private = input_panel_surface;
3980
3981         input_panel_surface->shell = shell;
3982
3983         input_panel_surface->surface = surface;
3984
3985         wl_signal_init(&input_panel_surface->destroy_signal);
3986         input_panel_surface->surface_destroy_listener.notify = input_panel_handle_surface_destroy;
3987         wl_signal_add(&surface->destroy_signal,
3988                       &input_panel_surface->surface_destroy_listener);
3989
3990         wl_list_init(&input_panel_surface->link);
3991
3992         return input_panel_surface;
3993 }
3994
3995 static void
3996 input_panel_surface_set_toplevel(struct wl_client *client,
3997                                  struct wl_resource *resource,
3998                                  struct wl_resource *output_resource,
3999                                  uint32_t position)
4000 {
4001         struct input_panel_surface *input_panel_surface =
4002                 wl_resource_get_user_data(resource);
4003         struct desktop_shell *shell = input_panel_surface->shell;
4004
4005         wl_list_insert(&shell->input_panel.surfaces,
4006                        &input_panel_surface->link);
4007
4008         input_panel_surface->output = wl_resource_get_user_data(output_resource);
4009         input_panel_surface->panel = 0;
4010 }
4011
4012 static void
4013 input_panel_surface_set_overlay_panel(struct wl_client *client,
4014                                       struct wl_resource *resource)
4015 {
4016         struct input_panel_surface *input_panel_surface =
4017                 wl_resource_get_user_data(resource);
4018         struct desktop_shell *shell = input_panel_surface->shell;
4019
4020         wl_list_insert(&shell->input_panel.surfaces,
4021                        &input_panel_surface->link);
4022
4023         input_panel_surface->panel = 1;
4024 }
4025
4026 static const struct wl_input_panel_surface_interface input_panel_surface_implementation = {
4027         input_panel_surface_set_toplevel,
4028         input_panel_surface_set_overlay_panel
4029 };
4030
4031 static void
4032 destroy_input_panel_surface_resource(struct wl_resource *resource)
4033 {
4034         struct input_panel_surface *ipsurf =
4035                 wl_resource_get_user_data(resource);
4036
4037         destroy_input_panel_surface(ipsurf);
4038 }
4039
4040 static void
4041 input_panel_get_input_panel_surface(struct wl_client *client,
4042                                     struct wl_resource *resource,
4043                                     uint32_t id,
4044                                     struct wl_resource *surface_resource)
4045 {
4046         struct weston_surface *surface =
4047                 wl_resource_get_user_data(surface_resource);
4048         struct desktop_shell *shell = wl_resource_get_user_data(resource);
4049         struct input_panel_surface *ipsurf;
4050
4051         if (get_input_panel_surface(surface)) {
4052                 wl_resource_post_error(surface_resource,
4053                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
4054                                        "wl_input_panel::get_input_panel_surface already requested");
4055                 return;
4056         }
4057
4058         ipsurf = create_input_panel_surface(shell, surface);
4059         if (!ipsurf) {
4060                 wl_resource_post_error(surface_resource,
4061                                        WL_DISPLAY_ERROR_INVALID_OBJECT,
4062                                        "surface->configure already set");
4063                 return;
4064         }
4065
4066         ipsurf->resource =
4067                 wl_resource_create(client,
4068                                    &wl_input_panel_surface_interface, 1, id);
4069         wl_resource_set_implementation(ipsurf->resource,
4070                                        &input_panel_surface_implementation,
4071                                        ipsurf,
4072                                        destroy_input_panel_surface_resource);
4073 }
4074
4075 static const struct wl_input_panel_interface input_panel_implementation = {
4076         input_panel_get_input_panel_surface
4077 };
4078
4079 static void
4080 unbind_input_panel(struct wl_resource *resource)
4081 {
4082         struct desktop_shell *shell = wl_resource_get_user_data(resource);
4083
4084         shell->input_panel.binding = NULL;
4085 }
4086
4087 static void
4088 bind_input_panel(struct wl_client *client,
4089               void *data, uint32_t version, uint32_t id)
4090 {
4091         struct desktop_shell *shell = data;
4092         struct wl_resource *resource;
4093
4094         resource = wl_resource_create(client,
4095                                       &wl_input_panel_interface, 1, id);
4096
4097         if (shell->input_panel.binding == NULL) {
4098                 wl_resource_set_implementation(resource,
4099                                                &input_panel_implementation,
4100                                                shell, unbind_input_panel);
4101                 shell->input_panel.binding = resource;
4102                 return;
4103         }
4104
4105         wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
4106                                "interface object already bound");
4107         wl_resource_destroy(resource);
4108 }
4109
4110 struct switcher {
4111         struct desktop_shell *shell;
4112         struct weston_surface *current;
4113         struct wl_listener listener;
4114         struct weston_keyboard_grab grab;
4115 };
4116
4117 static void
4118 switcher_next(struct switcher *switcher)
4119 {
4120         struct weston_surface *surface;
4121         struct weston_surface *first = NULL, *prev = NULL, *next = NULL;
4122         struct shell_surface *shsurf;
4123         struct workspace *ws = get_current_workspace(switcher->shell);
4124
4125         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
4126                 switch (get_shell_surface_type(surface)) {
4127                 case SHELL_SURFACE_TOPLEVEL:
4128                 case SHELL_SURFACE_FULLSCREEN:
4129                 case SHELL_SURFACE_MAXIMIZED:
4130                         if (first == NULL)
4131                                 first = surface;
4132                         if (prev == switcher->current)
4133                                 next = surface;
4134                         prev = surface;
4135                         surface->alpha = 0.25;
4136                         weston_surface_geometry_dirty(surface);
4137                         weston_surface_damage(surface);
4138                         break;
4139                 default:
4140                         break;
4141                 }
4142
4143                 if (is_black_surface(surface, NULL)) {
4144                         surface->alpha = 0.25;
4145                         weston_surface_geometry_dirty(surface);
4146                         weston_surface_damage(surface);
4147                 }
4148         }
4149
4150         if (next == NULL)
4151                 next = first;
4152
4153         if (next == NULL)
4154                 return;
4155
4156         wl_list_remove(&switcher->listener.link);
4157         wl_signal_add(&next->destroy_signal, &switcher->listener);
4158
4159         switcher->current = next;
4160         next->alpha = 1.0;
4161
4162         shsurf = get_shell_surface(switcher->current);
4163         if (shsurf && shsurf->type ==SHELL_SURFACE_FULLSCREEN)
4164                 shsurf->fullscreen.black_surface->alpha = 1.0;
4165 }
4166
4167 static void
4168 switcher_handle_surface_destroy(struct wl_listener *listener, void *data)
4169 {
4170         struct switcher *switcher =
4171                 container_of(listener, struct switcher, listener);
4172
4173         switcher_next(switcher);
4174 }
4175
4176 static void
4177 switcher_destroy(struct switcher *switcher)
4178 {
4179         struct weston_surface *surface;
4180         struct weston_keyboard *keyboard = switcher->grab.keyboard;
4181         struct workspace *ws = get_current_workspace(switcher->shell);
4182
4183         wl_list_for_each(surface, &ws->layer.surface_list, layer_link) {
4184                 surface->alpha = 1.0;
4185                 weston_surface_damage(surface);
4186         }
4187
4188         if (switcher->current)
4189                 activate(switcher->shell, switcher->current,
4190                          (struct weston_seat *) keyboard->seat);
4191         wl_list_remove(&switcher->listener.link);
4192         weston_keyboard_end_grab(keyboard);
4193         if (keyboard->input_method_resource)
4194                 keyboard->grab = &keyboard->input_method_grab;
4195         free(switcher);
4196 }
4197
4198 static void
4199 switcher_key(struct weston_keyboard_grab *grab,
4200              uint32_t time, uint32_t key, uint32_t state_w)
4201 {
4202         struct switcher *switcher = container_of(grab, struct switcher, grab);
4203         enum wl_keyboard_key_state state = state_w;
4204
4205         if (key == KEY_TAB && state == WL_KEYBOARD_KEY_STATE_PRESSED)
4206                 switcher_next(switcher);
4207 }
4208
4209 static void
4210 switcher_modifier(struct weston_keyboard_grab *grab, uint32_t serial,
4211                   uint32_t mods_depressed, uint32_t mods_latched,
4212                   uint32_t mods_locked, uint32_t group)
4213 {
4214         struct switcher *switcher = container_of(grab, struct switcher, grab);
4215         struct weston_seat *seat = (struct weston_seat *) grab->keyboard->seat;
4216
4217         if ((seat->modifier_state & switcher->shell->binding_modifier) == 0)
4218                 switcher_destroy(switcher);
4219 }
4220
4221 static const struct weston_keyboard_grab_interface switcher_grab = {
4222         switcher_key,
4223         switcher_modifier,
4224 };
4225
4226 static void
4227 switcher_binding(struct weston_seat *seat, uint32_t time, uint32_t key,
4228                  void *data)
4229 {
4230         struct desktop_shell *shell = data;
4231         struct switcher *switcher;
4232
4233         switcher = malloc(sizeof *switcher);
4234         switcher->shell = shell;
4235         switcher->current = NULL;
4236         switcher->listener.notify = switcher_handle_surface_destroy;
4237         wl_list_init(&switcher->listener.link);
4238
4239         restore_all_output_modes(shell->compositor);
4240         lower_fullscreen_layer(switcher->shell);
4241         switcher->grab.interface = &switcher_grab;
4242         weston_keyboard_start_grab(seat->keyboard, &switcher->grab);
4243         weston_keyboard_set_focus(seat->keyboard, NULL);
4244         switcher_next(switcher);
4245 }
4246
4247 static void
4248 backlight_binding(struct weston_seat *seat, uint32_t time, uint32_t key,
4249                   void *data)
4250 {
4251         struct weston_compositor *compositor = data;
4252         struct weston_output *output;
4253         long backlight_new = 0;
4254
4255         /* TODO: we're limiting to simple use cases, where we assume just
4256          * control on the primary display. We'd have to extend later if we
4257          * ever get support for setting backlights on random desktop LCD
4258          * panels though */
4259         output = get_default_output(compositor);
4260         if (!output)
4261                 return;
4262
4263         if (!output->set_backlight)
4264                 return;
4265
4266         if (key == KEY_F9 || key == KEY_BRIGHTNESSDOWN)
4267                 backlight_new = output->backlight_current - 25;
4268         else if (key == KEY_F10 || key == KEY_BRIGHTNESSUP)
4269                 backlight_new = output->backlight_current + 25;
4270
4271         if (backlight_new < 5)
4272                 backlight_new = 5;
4273         if (backlight_new > 255)
4274                 backlight_new = 255;
4275
4276         output->backlight_current = backlight_new;
4277         output->set_backlight(output, output->backlight_current);
4278 }
4279
4280 struct debug_binding_grab {
4281         struct weston_keyboard_grab grab;
4282         struct weston_seat *seat;
4283         uint32_t key[2];
4284         int key_released[2];
4285 };
4286
4287 static void
4288 debug_binding_key(struct weston_keyboard_grab *grab, uint32_t time,
4289                   uint32_t key, uint32_t state)
4290 {
4291         struct debug_binding_grab *db = (struct debug_binding_grab *) grab;
4292         struct weston_compositor *ec = db->seat->compositor;
4293         struct wl_display *display = ec->wl_display;
4294         struct wl_resource *resource;
4295         uint32_t serial;
4296         int send = 0, terminate = 0;
4297         int check_binding = 1;
4298         int i;
4299         struct wl_list *resource_list;
4300
4301         if (state == WL_KEYBOARD_KEY_STATE_RELEASED) {
4302                 /* Do not run bindings on key releases */
4303                 check_binding = 0;
4304
4305                 for (i = 0; i < 2; i++)
4306                         if (key == db->key[i])
4307                                 db->key_released[i] = 1;
4308
4309                 if (db->key_released[0] && db->key_released[1]) {
4310                         /* All key releases been swalled so end the grab */
4311                         terminate = 1;
4312                 } else if (key != db->key[0] && key != db->key[1]) {
4313                         /* Should not swallow release of other keys */
4314                         send = 1;
4315                 }
4316         } else if (key == db->key[0] && !db->key_released[0]) {
4317                 /* Do not check bindings for the first press of the binding
4318                  * key. This allows it to be used as a debug shortcut.
4319                  * We still need to swallow this event. */
4320                 check_binding = 0;
4321         } else if (db->key[1]) {
4322                 /* If we already ran a binding don't process another one since
4323                  * we can't keep track of all the binding keys that were
4324                  * pressed in order to swallow the release events. */
4325                 send = 1;
4326                 check_binding = 0;
4327         }
4328
4329         if (check_binding) {
4330                 if (weston_compositor_run_debug_binding(ec, db->seat, time,
4331                                                         key, state)) {
4332                         /* We ran a binding so swallow the press and keep the
4333                          * grab to swallow the released too. */
4334                         send = 0;
4335                         terminate = 0;
4336                         db->key[1] = key;
4337                 } else {
4338                         /* Terminate the grab since the key pressed is not a
4339                          * debug binding key. */
4340                         send = 1;
4341                         terminate = 1;
4342                 }
4343         }
4344
4345         if (send) {
4346                 serial = wl_display_next_serial(display);
4347                 resource_list = &grab->keyboard->focus_resource_list;
4348                 wl_resource_for_each(resource, resource_list) {
4349                         wl_keyboard_send_key(resource, serial, time, key, state);
4350                 }
4351         }
4352
4353         if (terminate) {
4354                 weston_keyboard_end_grab(grab->keyboard);
4355                 if (grab->keyboard->input_method_resource)
4356                         grab->keyboard->grab = &grab->keyboard->input_method_grab;
4357                 free(db);
4358         }
4359 }
4360
4361 static void
4362 debug_binding_modifiers(struct weston_keyboard_grab *grab, uint32_t serial,
4363                         uint32_t mods_depressed, uint32_t mods_latched,
4364                         uint32_t mods_locked, uint32_t group)
4365 {
4366         struct wl_resource *resource;
4367         struct wl_list *resource_list;
4368
4369         resource_list = &grab->keyboard->focus_resource_list;
4370
4371         wl_resource_for_each(resource, resource_list) {
4372                 wl_keyboard_send_modifiers(resource, serial, mods_depressed,
4373                                            mods_latched, mods_locked, group);
4374         }
4375 }
4376
4377 struct weston_keyboard_grab_interface debug_binding_keyboard_grab = {
4378         debug_binding_key,
4379         debug_binding_modifiers
4380 };
4381
4382 static void
4383 debug_binding(struct weston_seat *seat, uint32_t time, uint32_t key, void *data)
4384 {
4385         struct debug_binding_grab *grab;
4386
4387         grab = calloc(1, sizeof *grab);
4388         if (!grab)
4389                 return;
4390
4391         grab->seat = (struct weston_seat *) seat;
4392         grab->key[0] = key;
4393         grab->grab.interface = &debug_binding_keyboard_grab;
4394         weston_keyboard_start_grab(seat->keyboard, &grab->grab);
4395 }
4396
4397 static void
4398 force_kill_binding(struct weston_seat *seat, uint32_t time, uint32_t key,
4399                    void *data)
4400 {
4401         struct weston_surface *focus_surface;
4402         struct wl_client *client;
4403         struct desktop_shell *shell = data;
4404         struct weston_compositor *compositor = shell->compositor;
4405         pid_t pid;
4406
4407         focus_surface = seat->keyboard->focus;
4408         if (!focus_surface)
4409                 return;
4410
4411         wl_signal_emit(&compositor->kill_signal, focus_surface);
4412
4413         client = wl_resource_get_client(focus_surface->resource);
4414         wl_client_get_credentials(client, &pid, NULL, NULL);
4415
4416         /* Skip clients that we launched ourselves (the credentials of
4417          * the socketpair is ours) */
4418         if (pid == getpid())
4419                 return;
4420
4421         kill(pid, SIGKILL);
4422 }
4423
4424 static void
4425 workspace_up_binding(struct weston_seat *seat, uint32_t time,
4426                      uint32_t key, void *data)
4427 {
4428         struct desktop_shell *shell = data;
4429         unsigned int new_index = shell->workspaces.current;
4430
4431         if (shell->locked)
4432                 return;
4433         if (new_index != 0)
4434                 new_index--;
4435
4436         change_workspace(shell, new_index);
4437 }
4438
4439 static void
4440 workspace_down_binding(struct weston_seat *seat, uint32_t time,
4441                        uint32_t key, void *data)
4442 {
4443         struct desktop_shell *shell = data;
4444         unsigned int new_index = shell->workspaces.current;
4445
4446         if (shell->locked)
4447                 return;
4448         if (new_index < shell->workspaces.num - 1)
4449                 new_index++;
4450
4451         change_workspace(shell, new_index);
4452 }
4453
4454 static void
4455 workspace_f_binding(struct weston_seat *seat, uint32_t time,
4456                     uint32_t key, void *data)
4457 {
4458         struct desktop_shell *shell = data;
4459         unsigned int new_index;
4460
4461         if (shell->locked)
4462                 return;
4463         new_index = key - KEY_F1;
4464         if (new_index >= shell->workspaces.num)
4465                 new_index = shell->workspaces.num - 1;
4466
4467         change_workspace(shell, new_index);
4468 }
4469
4470 static void
4471 workspace_move_surface_up_binding(struct weston_seat *seat, uint32_t time,
4472                                   uint32_t key, void *data)
4473 {
4474         struct desktop_shell *shell = data;
4475         unsigned int new_index = shell->workspaces.current;
4476
4477         if (shell->locked)
4478                 return;
4479
4480         if (new_index != 0)
4481                 new_index--;
4482
4483         take_surface_to_workspace_by_seat(shell, seat, new_index);
4484 }
4485
4486 static void
4487 workspace_move_surface_down_binding(struct weston_seat *seat, uint32_t time,
4488                                     uint32_t key, void *data)
4489 {
4490         struct desktop_shell *shell = data;
4491         unsigned int new_index = shell->workspaces.current;
4492
4493         if (shell->locked)
4494                 return;
4495
4496         if (new_index < shell->workspaces.num - 1)
4497                 new_index++;
4498
4499         take_surface_to_workspace_by_seat(shell, seat, new_index);
4500 }
4501
4502 static void
4503 shell_destroy(struct wl_listener *listener, void *data)
4504 {
4505         struct desktop_shell *shell =
4506                 container_of(listener, struct desktop_shell, destroy_listener);
4507         struct workspace **ws;
4508
4509         if (shell->child.client)
4510                 wl_client_destroy(shell->child.client);
4511
4512         wl_list_remove(&shell->idle_listener.link);
4513         wl_list_remove(&shell->wake_listener.link);
4514         wl_list_remove(&shell->show_input_panel_listener.link);
4515         wl_list_remove(&shell->hide_input_panel_listener.link);
4516
4517         wl_array_for_each(ws, &shell->workspaces.array)
4518                 workspace_destroy(*ws);
4519         wl_array_release(&shell->workspaces.array);
4520
4521         free(shell->screensaver.path);
4522         free(shell);
4523 }
4524
4525 static void
4526 shell_add_bindings(struct weston_compositor *ec, struct desktop_shell *shell)
4527 {
4528         uint32_t mod;
4529         int i, num_workspace_bindings;
4530
4531         /* fixed bindings */
4532         weston_compositor_add_key_binding(ec, KEY_BACKSPACE,
4533                                           MODIFIER_CTRL | MODIFIER_ALT,
4534                                           terminate_binding, ec);
4535         weston_compositor_add_button_binding(ec, BTN_LEFT, 0,
4536                                              click_to_activate_binding,
4537                                              shell);
4538         weston_compositor_add_touch_binding(ec, 0,
4539                                             touch_to_activate_binding,
4540                                             shell);
4541         weston_compositor_add_axis_binding(ec, WL_POINTER_AXIS_VERTICAL_SCROLL,
4542                                            MODIFIER_SUPER | MODIFIER_ALT,
4543                                            surface_opacity_binding, NULL);
4544         weston_compositor_add_axis_binding(ec, WL_POINTER_AXIS_VERTICAL_SCROLL,
4545                                            MODIFIER_SUPER, zoom_axis_binding,
4546                                            NULL);
4547
4548         /* configurable bindings */
4549         mod = shell->binding_modifier;
4550         weston_compositor_add_key_binding(ec, KEY_PAGEUP, mod,
4551                                           zoom_key_binding, NULL);
4552         weston_compositor_add_key_binding(ec, KEY_PAGEDOWN, mod,
4553                                           zoom_key_binding, NULL);
4554         weston_compositor_add_button_binding(ec, BTN_LEFT, mod, move_binding,
4555                                              shell);
4556         weston_compositor_add_touch_binding(ec, mod, touch_move_binding, shell);
4557         weston_compositor_add_button_binding(ec, BTN_MIDDLE, mod,
4558                                              resize_binding, shell);
4559
4560         if (ec->capabilities & WESTON_CAP_ROTATION_ANY)
4561                 weston_compositor_add_button_binding(ec, BTN_RIGHT, mod,
4562                                                      rotate_binding, NULL);
4563
4564         weston_compositor_add_key_binding(ec, KEY_TAB, mod, switcher_binding,
4565                                           shell);
4566         weston_compositor_add_key_binding(ec, KEY_F9, mod, backlight_binding,
4567                                           ec);
4568         weston_compositor_add_key_binding(ec, KEY_BRIGHTNESSDOWN, 0,
4569                                           backlight_binding, ec);
4570         weston_compositor_add_key_binding(ec, KEY_F10, mod, backlight_binding,
4571                                           ec);
4572         weston_compositor_add_key_binding(ec, KEY_BRIGHTNESSUP, 0,
4573                                           backlight_binding, ec);
4574         weston_compositor_add_key_binding(ec, KEY_K, mod,
4575                                           force_kill_binding, shell);
4576         weston_compositor_add_key_binding(ec, KEY_UP, mod,
4577                                           workspace_up_binding, shell);
4578         weston_compositor_add_key_binding(ec, KEY_DOWN, mod,
4579                                           workspace_down_binding, shell);
4580         weston_compositor_add_key_binding(ec, KEY_UP, mod | MODIFIER_SHIFT,
4581                                           workspace_move_surface_up_binding,
4582                                           shell);
4583         weston_compositor_add_key_binding(ec, KEY_DOWN, mod | MODIFIER_SHIFT,
4584                                           workspace_move_surface_down_binding,
4585                                           shell);
4586
4587         /* Add bindings for mod+F[1-6] for workspace 1 to 6. */
4588         if (shell->workspaces.num > 1) {
4589                 num_workspace_bindings = shell->workspaces.num;
4590                 if (num_workspace_bindings > 6)
4591                         num_workspace_bindings = 6;
4592                 for (i = 0; i < num_workspace_bindings; i++)
4593                         weston_compositor_add_key_binding(ec, KEY_F1 + i, mod,
4594                                                           workspace_f_binding,
4595                                                           shell);
4596         }
4597
4598         /* Debug bindings */
4599         weston_compositor_add_key_binding(ec, KEY_SPACE, mod | MODIFIER_SHIFT,
4600                                           debug_binding, shell);
4601 }
4602
4603 WL_EXPORT int
4604 module_init(struct weston_compositor *ec,
4605             int *argc, char *argv[])
4606 {
4607         struct weston_seat *seat;
4608         struct desktop_shell *shell;
4609         struct workspace **pws;
4610         unsigned int i;
4611         struct wl_event_loop *loop;
4612
4613         shell = zalloc(sizeof *shell);
4614         if (shell == NULL)
4615                 return -1;
4616
4617         shell->compositor = ec;
4618
4619         shell->destroy_listener.notify = shell_destroy;
4620         wl_signal_add(&ec->destroy_signal, &shell->destroy_listener);
4621         shell->idle_listener.notify = idle_handler;
4622         wl_signal_add(&ec->idle_signal, &shell->idle_listener);
4623         shell->wake_listener.notify = wake_handler;
4624         wl_signal_add(&ec->wake_signal, &shell->wake_listener);
4625         shell->show_input_panel_listener.notify = show_input_panels;
4626         wl_signal_add(&ec->show_input_panel_signal, &shell->show_input_panel_listener);
4627         shell->hide_input_panel_listener.notify = hide_input_panels;
4628         wl_signal_add(&ec->hide_input_panel_signal, &shell->hide_input_panel_listener);
4629         shell->update_input_panel_listener.notify = update_input_panels;
4630         wl_signal_add(&ec->update_input_panel_signal, &shell->update_input_panel_listener);
4631         ec->ping_handler = ping_handler;
4632         ec->shell_interface.shell = shell;
4633         ec->shell_interface.create_shell_surface = create_shell_surface;
4634         ec->shell_interface.set_toplevel = set_toplevel;
4635         ec->shell_interface.set_transient = set_transient;
4636         ec->shell_interface.set_fullscreen = set_fullscreen;
4637         ec->shell_interface.set_xwayland = set_xwayland;
4638         ec->shell_interface.move = surface_move;
4639         ec->shell_interface.resize = surface_resize;
4640         ec->shell_interface.set_title = set_title;
4641
4642         wl_list_init(&shell->input_panel.surfaces);
4643
4644         weston_layer_init(&shell->fullscreen_layer, &ec->cursor_layer.link);
4645         weston_layer_init(&shell->panel_layer, &shell->fullscreen_layer.link);
4646         weston_layer_init(&shell->background_layer, &shell->panel_layer.link);
4647         weston_layer_init(&shell->lock_layer, NULL);
4648         weston_layer_init(&shell->input_panel_layer, NULL);
4649
4650         wl_array_init(&shell->workspaces.array);
4651         wl_list_init(&shell->workspaces.client_list);
4652
4653         shell_configuration(shell);
4654
4655         for (i = 0; i < shell->workspaces.num; i++) {
4656                 pws = wl_array_add(&shell->workspaces.array, sizeof *pws);
4657                 if (pws == NULL)
4658                         return -1;
4659
4660                 *pws = workspace_create();
4661                 if (*pws == NULL)
4662                         return -1;
4663         }
4664         activate_workspace(shell, 0);
4665
4666         wl_list_init(&shell->workspaces.anim_sticky_list);
4667         wl_list_init(&shell->workspaces.animation.link);
4668         shell->workspaces.animation.frame = animate_workspace_change_frame;
4669
4670         if (wl_global_create(ec->wl_display, &wl_shell_interface, 1,
4671                                   shell, bind_shell) == NULL)
4672                 return -1;
4673
4674         if (wl_global_create(ec->wl_display,
4675                              &desktop_shell_interface, 2,
4676                              shell, bind_desktop_shell) == NULL)
4677                 return -1;
4678
4679         if (wl_global_create(ec->wl_display, &screensaver_interface, 1,
4680                              shell, bind_screensaver) == NULL)
4681                 return -1;
4682
4683         if (wl_global_create(ec->wl_display, &wl_input_panel_interface, 1,
4684                                   shell, bind_input_panel) == NULL)
4685                 return -1;
4686
4687         if (wl_global_create(ec->wl_display, &workspace_manager_interface, 1,
4688                              shell, bind_workspace_manager) == NULL)
4689                 return -1;
4690
4691         shell->child.deathstamp = weston_compositor_get_time();
4692
4693         loop = wl_display_get_event_loop(ec->wl_display);
4694         wl_event_loop_add_idle(loop, launch_desktop_shell_process, shell);
4695
4696         shell->screensaver.timer =
4697                 wl_event_loop_add_timer(loop, screensaver_timeout, shell);
4698
4699         wl_list_for_each(seat, &ec->seat_list, link)
4700                 create_pointer_focus_listener(seat);
4701
4702         shell_add_bindings(ec, shell);
4703
4704         shell_fade_init(shell);
4705
4706         return 0;
4707 }