openbox/client.c

   1 #include "client.h"
   2 #include "dock.h"
   3 #include "xerror.h"
   4 #include "startup.h"
   5 #include "screen.h"
   6 #include "moveresize.h"
   7 #include "prop.h"
   8 #include "extensions.h"
   9 #include "frame.h"
  10 #include "event.h"
  11 #include "grab.h"
  12 #include "focus.h"
  13 #include "stacking.h"
  14 #include "dispatch.h"
  15 #include "openbox.h"
  16 #include "group.h"
  17 #include "config.h"
  18 #include "menu.h"
  19 #include "render/render.h"
  20
  21 #include <glib.h>
  22 #include <X11/Xutil.h>
  23
  24 /*! The event mask to grab on client windows */
  25 #define CLIENT_EVENTMASK (PropertyChangeMask | FocusChangeMask | \
  26                           StructureNotifyMask)
  27
  28 #define CLIENT_NOPROPAGATEMASK (ButtonPressMask | ButtonReleaseMask | \
  29                                 ButtonMotionMask)
  30
  31 GList      *client_list      = NULL;
  32
  33 static void client_get_all(Client *self);
  34 static void client_toggle_border(Client *self, gboolean show);
  35 static void client_get_area(Client *self);
  36 static void client_get_desktop(Client *self);
  37 static void client_get_state(Client *self);
  38 static void client_get_shaped(Client *self);
  39 static void client_get_mwm_hints(Client *self);
  40 static void client_get_gravity(Client *self);
  41 static void client_showhide(Client *self);
  42 static void client_change_allowed_actions(Client *self);
  43 static void client_change_state(Client *self);
  44 static void client_apply_startup_state(Client *self);
  45
  46 void client_startup()
  47 {
  48     client_set_list();
  49 }
  50
  51 void client_shutdown()
  52 {
  53 }
  54
  55 void client_set_list()
  56 {
  57     Window *windows, *win_it;
  58     GList *it;
  59     guint size = g_list_length(client_list);
  60
  61     /* create an array of the window ids */
  62     if (size > 0) {
  63         windows = g_new(Window, size);
  64         win_it = windows;
  65         for (it = client_list; it != NULL; it = it->next, ++win_it)
  66             *win_it = ((Client*)it->data)->window;
  67     } else
  68         windows = NULL;
  69
  70     PROP_SETA32(ob_root, net_client_list, window, (guint32*)windows, size);
  71
  72     if (windows)
  73         g_free(windows);
  74
  75     stacking_set_list();
  76 }
  77
  78 /*
  79 void client_foreach_transient(Client *self, ClientForeachFunc func, void *data)
  80 {
  81     GSList *it;
  82
  83     for (it = self->transients; it; it = it->next) {
  84         if (!func(it->data, data)) return;
  85         client_foreach_transient(it->data, func, data);
  86     }
  87 }
  88
  89 void client_foreach_ancestor(Client *self, ClientForeachFunc func, void *data)
  90 {
  91     if (self->transient_for) {
  92         if (self->transient_for != TRAN_GROUP) {
  93             if (!func(self->transient_for, data)) return;
  94             client_foreach_ancestor(self->transient_for, func, data);
  95         } else {
  96             GSList *it;
  97
  98             for (it = self->group->members; it; it = it->next)
  99                 if (it->data != self &&
 100                     !((Client*)it->data)->transient_for) {
 101                     if (!func(it->data, data)) return;
 102                     client_foreach_ancestor(it->data, func, data);
 103                 }
 104         }
 105     }
 106 }
 107 */
 108
 109 void client_manage_all()
 110 {
 111     unsigned int i, j, nchild;
 112     Window w, *children;
 113     XWMHints *wmhints;
 114     XWindowAttributes attrib;
 115
 116     XQueryTree(ob_display, ob_root, &w, &w, &children, &nchild);
 117
 118     /* remove all icon windows from the list */
 119     for (i = 0; i < nchild; i++) {
 120         if (children[i] == None) continue;
 121         wmhints = XGetWMHints(ob_display, children[i]);
 122         if (wmhints) {
 123             if ((wmhints->flags & IconWindowHint) &&
 124                 (wmhints->icon_window != children[i]))
 125                 for (j = 0; j < nchild; j++)
 126                     if (children[j] == wmhints->icon_window) {
 127                         children[j] = None;
 128                         break;
 129                     }
 130             XFree(wmhints);
 131         }
 132     }
 133
 134     for (i = 0; i < nchild; ++i) {
 135         if (children[i] == None)
 136             continue;
 137         if (XGetWindowAttributes(ob_display, children[i], &attrib)) {
 138             if (attrib.override_redirect) continue;
 139
 140             if (attrib.map_state != IsUnmapped)
 141                 client_manage(children[i]);
 142         }
 143     }
 144     XFree(children);
 145
 146     /* stack them as they were on startup!
 147        why with stacking_lower? Why, because then windows who aren't in the
 148        stacking list are on the top where you can see them instead of buried
 149        at the bottom! */
 150     for (i = startup_stack_size; i > 0; --i) {
 151         ObWindow *obw;
 152
 153         w = startup_stack_order[i-1];
 154         obw = g_hash_table_lookup(window_map, &w);
 155         if (obw) {
 156             g_assert(WINDOW_IS_CLIENT(obw));
 157             stacking_lower(CLIENT_AS_WINDOW(obw));
 158         }
 159     }
 160     g_free(startup_stack_order);
 161     startup_stack_order = NULL;
 162     startup_stack_size = 0;
 163
 164     if (config_focus_new) {
 165         ObWindow *active;
 166
 167         active = g_hash_table_lookup(window_map, &startup_active);
 168         if (active) {
 169             g_assert(WINDOW_IS_CLIENT(active));
 170             if (!client_focus(WINDOW_AS_CLIENT(active)))
 171                 focus_fallback(Fallback_NoFocus);
 172         } else
 173             focus_fallback(Fallback_NoFocus);
 174     }
 175 }
 176
 177 void client_manage(Window window)
 178 {
 179     Client *self;
 180     XEvent e;
 181     XWindowAttributes attrib;
 182     XSetWindowAttributes attrib_set;
 183     XWMHints *wmhint;
 184     gboolean activate = FALSE;
 185
 186     grab_server(TRUE);
 187
 188     /* check if it has already been unmapped by the time we started mapping
 189        the grab does a sync so we don't have to here */
 190     if (XCheckTypedWindowEvent(ob_display, window, DestroyNotify, &e) ||
 191         XCheckTypedWindowEvent(ob_display, window, UnmapNotify, &e)) {
 192         XPutBackEvent(ob_display, &e);
 193
 194         grab_server(FALSE);
 195         return; /* don't manage it */
 196     }
 197
 198     /* make sure it isn't an override-redirect window */
 199     if (!XGetWindowAttributes(ob_display, window, &attrib) ||
 200         attrib.override_redirect) {
 201         grab_server(FALSE);
 202         return; /* don't manage it */
 203     }
 204
 205     /* is the window a docking app */
 206     if ((wmhint = XGetWMHints(ob_display, window))) {
 207         if ((wmhint->flags & StateHint) &&
 208             wmhint->initial_state == WithdrawnState) {
 209             dock_add(window, wmhint);
 210             grab_server(FALSE);
 211             XFree(wmhint);
 212             return;
 213         }
 214         XFree(wmhint);
 215     }
 216
 217     g_message("Managing window: %lx", window);
 218
 219     /* choose the events we want to receive on the CLIENT window */
 220     attrib_set.event_mask = CLIENT_EVENTMASK;
 221     attrib_set.do_not_propagate_mask = CLIENT_NOPROPAGATEMASK;
 222     XChangeWindowAttributes(ob_display, window,
 223                             CWEventMask|CWDontPropagate, &attrib_set);
 224
 225
 226     /* create the Client struct, and populate it from the hints on the
 227        window */
 228     self = g_new(Client, 1);
 229     self->obwin.type = Window_Client;
 230     self->window = window;
 231     client_get_all(self);
 232
 233     /* remove the client's border (and adjust re gravity) */
 234     client_toggle_border(self, FALSE);
 235
 236     /* specify that if we exit, the window should not be destroyed and should
 237        be reparented back to root automatically */
 238     XChangeSaveSet(ob_display, window, SetModeInsert);
 239
 240     /* create the decoration frame for the client window */
 241     self->frame = frame_new();
 242
 243     frame_grab_client(self->frame, self);
 244
 245     client_apply_startup_state(self);
 246
 247     grab_server(FALSE);
 248
 249     /* add to client list/map */
 250     client_list = g_list_append(client_list, self);
 251     g_hash_table_insert(window_map, &self->window, self);
 252
 253     /* update the focus lists */
 254     focus_order_add_new(self);
 255
 256     /* focus the new window? */
 257     if (ob_state != State_Starting && config_focus_new &&
 258         (self->type == Type_Normal || self->type == Type_Dialog)) {
 259         gboolean group_foc = FALSE;
 260
 261         if (self->group) {
 262             GSList *it;
 263
 264             for (it = self->group->members; it; it = it->next) {
 265                 if (client_focused(it->data)) {
 266                     group_foc = TRUE;
 267                     break;
 268                 }
 269             }
 270         }
 271         /* note the check against Type_Normal/Dialog, not client_normal(self),
 272            which would also include other types. in this case we want more
 273            strict rules for focus */
 274         if ((group_foc ||
 275              (!self->transient_for && (!self->group ||
 276                                        !self->group->members->next))) ||
 277             client_search_focus_tree_full(self) ||
 278             !focus_client ||
 279             !client_normal(focus_client)) {
 280             /* activate the window */
 281             stacking_add(CLIENT_AS_WINDOW(self));
 282             activate = TRUE;
 283         } else {
 284             /* try to not get in the way */
 285             stacking_add_nonintrusive(CLIENT_AS_WINDOW(self));
 286         }
 287     } else {
 288         stacking_add(CLIENT_AS_WINDOW(self));
 289     }
 290
 291     screen_update_struts();
 292
 293     /* make sure the window is visible */
 294     client_move_onscreen(self);
 295
 296     dispatch_client(Event_Client_New, self, 0, 0);
 297
 298     client_showhide(self);
 299
 300     if (activate) client_activate(self);
 301
 302     /* update the list hints */
 303     client_set_list();
 304
 305     dispatch_client(Event_Client_Mapped, self, 0, 0);
 306
 307     g_message("Managed window 0x%lx (%s)", window, self->class);
 308 }
 309
 310 void client_unmanage_all()
 311 {
 312     while (client_list != NULL)
 313         client_unmanage(client_list->data);
 314 }
 315
 316 /* called by client_unmanage() to close any menus referencing this client */
 317 void client_close_menus(gpointer key, gpointer value, gpointer self)
 318 {
 319     if (((Menu *)value)->client == (Client *)self)
 320         menu_hide((Menu *)value);
 321 }
 322
 323 void client_unmanage(Client *self)
 324 {
 325     int j;
 326     GSList *it;
 327
 328     g_message("Unmanaging window: %lx (%s)", self->window, self->class);
 329
 330     dispatch_client(Event_Client_Destroy, self, 0, 0);
 331     g_assert(self != NULL);
 332
 333     /* remove the window from our save set */
 334     XChangeSaveSet(ob_display, self->window, SetModeDelete);
 335
 336     /* we dont want events no more */
 337     XSelectInput(ob_display, self->window, NoEventMask);
 338
 339     frame_hide(self->frame);
 340
 341     client_list = g_list_remove(client_list, self);
 342     stacking_remove(self);
 343     g_hash_table_remove(window_map, &self->window);
 344
 345     /* update the focus lists */
 346     focus_order_remove(self);
 347
 348     /* once the client is out of the list, update the struts to remove it's
 349        influence */
 350     screen_update_struts();
 351
 352     /* tell our parent(s) that we're gone */
 353     if (self->transient_for == TRAN_GROUP) { /* transient of group */
 354         GSList *it;
 355
 356         for (it = self->group->members; it; it = it->next)
 357             if (it->data != self)
 358                 ((Client*)it->data)->transients =
 359                     g_slist_remove(((Client*)it->data)->transients, self);
 360     } else if (self->transient_for) {        /* transient of window */
 361         self->transient_for->transients =
 362             g_slist_remove(self->transient_for->transients, self);
 363     }
 364
 365     /* tell our transients that we're gone */
 366     for (it = self->transients; it != NULL; it = it->next) {
 367         if (((Client*)it->data)->transient_for != TRAN_GROUP) {
 368             ((Client*)it->data)->transient_for = NULL;
 369             client_calc_layer(it->data);
 370         }
 371     }
 372
 373     if (moveresize_client == self)
 374         moveresize_end(TRUE);
 375
 376     /* close any windows that are attached to this window */
 377     g_hash_table_foreach(menu_hash, client_close_menus, self);
 378
 379
 380     if (focus_client == self) {
 381         XEvent e;
 382
 383         /* focus the last focused window on the desktop, and ignore enter
 384            events from the unmap so it doesnt mess with the focus */
 385         while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 386         client_unfocus(self);
 387     }
 388
 389     /* remove from its group */
 390     if (self->group) {
 391         group_remove(self->group, self);
 392         self->group = NULL;
 393     }
 394
 395     /* dispatch the unmapped event */
 396     dispatch_client(Event_Client_Unmapped, self, 0, 0);
 397     g_assert(self != NULL);
 398
 399     /* give the client its border back */
 400     client_toggle_border(self, TRUE);
 401
 402     /* reparent the window out of the frame, and free the frame */
 403     frame_release_client(self->frame, self);
 404     self->frame = NULL;
 405
 406     if (ob_state != State_Exiting) {
 407         /* these values should not be persisted across a window
 408            unmapping/mapping */
 409         prop_erase(self->window, prop_atoms.net_wm_desktop);
 410         prop_erase(self->window, prop_atoms.net_wm_state);
 411     } else {
 412         /* if we're left in an iconic state, the client wont be mapped. this is
 413            bad, since we will no longer be managing the window on restart */
 414         if (self->iconic)
 415             XMapWindow(ob_display, self->window);
 416     }
 417
 418
 419     g_message("Unmanaged window 0x%lx", self->window);
 420
 421     /* free all data allocated in the client struct */
 422     g_slist_free(self->transients);
 423     for (j = 0; j < self->nicons; ++j)
 424         g_free(self->icons[j].data);
 425     if (self->nicons > 0)
 426         g_free(self->icons);
 427     g_free(self->title);
 428     g_free(self->icon_title);
 429     g_free(self->name);
 430     g_free(self->class);
 431     g_free(self->role);
 432     g_free(self);
 433
 434     /* update the list hints */
 435     client_set_list();
 436 }
 437
 438 void client_move_onscreen(Client *self)
 439 {
 440     Rect *a;
 441     int x = self->frame->area.x, y = self->frame->area.y;
 442
 443     a = screen_area(self->desktop);
 444     if (x >= a->x + a->width - 1)
 445         x = a->x + a->width - self->frame->area.width;
 446     if (y >= a->y + a->height - 1)
 447         y = a->y + a->height - self->frame->area.height;
 448     if (x + self->frame->area.width - 1 < a->x)
 449         x = a->x;
 450     if (y + self->frame->area.height - 1< a->y)
 451         y = a->y;
 452
 453     frame_frame_gravity(self->frame, &x, &y); /* get where the client
 454                                                  should be */
 455     client_configure(self , Corner_TopLeft, x, y,
 456                      self->area.width, self->area.height,
 457                      TRUE, TRUE);
 458 }
 459
 460 static void client_toggle_border(Client *self, gboolean show)
 461 {
 462     /* adjust our idea of where the client is, based on its border. When the
 463        border is removed, the client should now be considered to be in a
 464        different position.
 465        when re-adding the border to the client, the same operation needs to be
 466        reversed. */
 467     int oldx = self->area.x, oldy = self->area.y;
 468     int x = oldx, y = oldy;
 469     switch(self->gravity) {
 470     default:
 471     case NorthWestGravity:
 472     case WestGravity:
 473     case SouthWestGravity:
 474         break;
 475     case NorthEastGravity:
 476     case EastGravity:
 477     case SouthEastGravity:
 478         if (show) x -= self->border_width * 2;
 479         else      x += self->border_width * 2;
 480         break;
 481     case NorthGravity:
 482     case SouthGravity:
 483     case CenterGravity:
 484     case ForgetGravity:
 485     case StaticGravity:
 486         if (show) x -= self->border_width;
 487         else      x += self->border_width;
 488         break;
 489     }
 490     switch(self->gravity) {
 491     default:
 492     case NorthWestGravity:
 493     case NorthGravity:
 494     case NorthEastGravity:
 495         break;
 496     case SouthWestGravity:
 497     case SouthGravity:
 498     case SouthEastGravity:
 499         if (show) y -= self->border_width * 2;
 500         else      y += self->border_width * 2;
 501         break;
 502     case WestGravity:
 503     case EastGravity:
 504     case CenterGravity:
 505     case ForgetGravity:
 506     case StaticGravity:
 507         if (show) y -= self->border_width;
 508         else      y += self->border_width;
 509         break;
 510     }
 511     self->area.x = x;
 512     self->area.y = y;
 513
 514     if (show) {
 515         XSetWindowBorderWidth(ob_display, self->window, self->border_width);
 516
 517         /* move the client so it is back it the right spot _with_ its
 518            border! */
 519         if (x != oldx || y != oldy)
 520             XMoveWindow(ob_display, self->window, x, y);
 521     } else
 522         XSetWindowBorderWidth(ob_display, self->window, 0);
 523 }
 524
 525
 526 static void client_get_all(Client *self)
 527 {
 528     /* update EVERYTHING!! */
 529
 530     self->ignore_unmaps = 0;
 531
 532     /* defaults */
 533     self->frame = NULL;
 534     self->title = self->icon_title = NULL;
 535     self->title_count = 1;
 536     self->name = self->class = self->role = NULL;
 537     self->wmstate = NormalState;
 538     self->transient = FALSE;
 539     self->transients = NULL;
 540     self->transient_for = NULL;
 541     self->layer = -1;
 542     self->urgent = FALSE;
 543     self->positioned = FALSE;
 544     self->disabled_decorations = 0;
 545     self->group = NULL;
 546     self->nicons = 0;
 547
 548     client_get_area(self);
 549     client_update_transient_for(self);
 550     client_update_wmhints(self);
 551     client_get_desktop(self);
 552     client_get_state(self);
 553     client_get_shaped(self);
 554
 555     client_get_mwm_hints(self);
 556     client_get_type(self);/* this can change the mwmhints for special cases */
 557
 558     client_update_protocols(self);
 559
 560     client_get_gravity(self); /* get the attribute gravity */
 561     client_update_normal_hints(self); /* this may override the attribute
 562                                          gravity */
 563
 564     /* got the type, the mwmhints, the protocols, and the normal hints
 565        (min/max sizes), so we're ready to set up the decorations/functions */
 566     client_setup_decor_and_functions(self);
 567
 568     client_update_title(self);
 569     client_update_class(self);
 570     client_update_strut(self);
 571     client_update_icons(self);
 572
 573     client_change_state(self);
 574 }
 575
 576 static void client_get_area(Client *self)
 577 {
 578     XWindowAttributes wattrib;
 579     Status ret;
 580
 581     ret = XGetWindowAttributes(ob_display, self->window, &wattrib);
 582     g_assert(ret != BadWindow);
 583
 584     RECT_SET(self->area, wattrib.x, wattrib.y, wattrib.width, wattrib.height);
 585     self->border_width = wattrib.border_width;
 586 }
 587
 588 static void client_get_desktop(Client *self)
 589 {
 590     guint32 d;
 591
 592     if (PROP_GET32(self->window, net_wm_desktop, cardinal, &d)) {
 593         if (d >= screen_num_desktops && d != DESKTOP_ALL)
 594             d = screen_num_desktops - 1;
 595         self->desktop = d;
 596     } else {
 597         gboolean trdesk = FALSE;
 598
 599        if (self->transient_for) {
 600            if (self->transient_for != TRAN_GROUP) {
 601                 self->desktop = self->transient_for->desktop;
 602                 trdesk = TRUE;
 603             } else {
 604                 GSList *it;
 605
 606                 for (it = self->group->members; it; it = it->next)
 607                     if (it->data != self &&
 608                         !((Client*)it->data)->transient_for) {
 609                         self->desktop = ((Client*)it->data)->desktop;
 610                         trdesk = TRUE;
 611                         break;
 612                     }
 613             }
 614        }
 615        if (!trdesk)
 616            /* defaults to the current desktop */
 617            self->desktop = screen_desktop;
 618
 619         /* set the desktop hint, to make sure that it always exists */
 620         PROP_SET32(self->window, net_wm_desktop, cardinal, self->desktop);
 621     }
 622 }
 623
 624 static void client_get_state(Client *self)
 625 {
 626     guint32 *state;
 627     guint num;
 628
 629     self->modal = self->shaded = self->max_horz = self->max_vert =
 630         self->fullscreen = self->above = self->below = self->iconic =
 631         self->skip_taskbar = self->skip_pager = FALSE;
 632
 633     if (PROP_GETA32(self->window, net_wm_state, atom, &state, &num)) {
 634         gulong i;
 635         for (i = 0; i < num; ++i) {
 636             if (state[i] == prop_atoms.net_wm_state_modal)
 637                 self->modal = TRUE;
 638             else if (state[i] == prop_atoms.net_wm_state_shaded)
 639                 self->shaded = TRUE;
 640             else if (state[i] == prop_atoms.net_wm_state_hidden)
 641                 self->iconic = TRUE;
 642             else if (state[i] == prop_atoms.net_wm_state_skip_taskbar)
 643                 self->skip_taskbar = TRUE;
 644             else if (state[i] == prop_atoms.net_wm_state_skip_pager)
 645                 self->skip_pager = TRUE;
 646             else if (state[i] == prop_atoms.net_wm_state_fullscreen)
 647                 self->fullscreen = TRUE;
 648             else if (state[i] == prop_atoms.net_wm_state_maximized_vert)
 649                 self->max_vert = TRUE;
 650             else if (state[i] == prop_atoms.net_wm_state_maximized_horz)
 651                 self->max_horz = TRUE;
 652             else if (state[i] == prop_atoms.net_wm_state_above)
 653                 self->above = TRUE;
 654             else if (state[i] == prop_atoms.net_wm_state_below)
 655                 self->below = TRUE;
 656         }
 657
 658         g_free(state);
 659     }
 660 }
 661
 662 static void client_get_shaped(Client *self)
 663 {
 664     self->shaped = FALSE;
 665 #ifdef   SHAPE
 666     if (extensions_shape) {
 667         int foo;
 668         guint ufoo;
 669         int s;
 670
 671         XShapeSelectInput(ob_display, self->window, ShapeNotifyMask);
 672
 673         XShapeQueryExtents(ob_display, self->window, &s, &foo,
 674                            &foo, &ufoo, &ufoo, &foo, &foo, &foo, &ufoo,
 675                            &ufoo);
 676         self->shaped = (s != 0);
 677     }
 678 #endif
 679 }
 680
 681 void client_update_transient_for(Client *self)
 682 {
 683     Window t = None;
 684     Client *c = NULL;
 685
 686     if (XGetTransientForHint(ob_display, self->window, &t)) {
 687         self->transient = TRUE;
 688         if (t != self->window) { /* cant be transient to itself! */
 689             c = g_hash_table_lookup(window_map, &t);
 690             /* if this happens then we need to check for it*/
 691             g_assert(c != self);
 692             g_assert(!c || WINDOW_IS_CLIENT(c));
 693
 694             if (!c && self->group) {
 695                 /* not transient to a client, see if it is transient for a
 696                    group */
 697                 if (t == self->group->leader ||
 698                     t == None ||
 699                     t == ob_root) {
 700                     /* window is a transient for its group! */
 701                     c = TRAN_GROUP;
 702                 }
 703             }
 704         }
 705     } else
 706         self->transient = FALSE;
 707
 708     /* if anything has changed... */
 709     if (c != self->transient_for) {
 710         if (self->transient_for == TRAN_GROUP) { /* transient of group */
 711             GSList *it;
 712
 713             /* remove from old parents */
 714             for (it = self->group->members; it; it = it->next)
 715                 if (it->data != self &&
 716                     !((Client*)it->data)->transient_for)
 717                     ((Client*)it->data)->transients =
 718                         g_slist_remove(((Client*)it->data)->transients, self);
 719         } else if (self->transient_for != NULL) { /* transient of window */
 720             /* remove from old parent */
 721             self->transient_for->transients =
 722                 g_slist_remove(self->transient_for->transients, self);
 723         }
 724         self->transient_for = c;
 725         if (self->transient_for == TRAN_GROUP) { /* transient of group */
 726             GSList *it;
 727
 728             /* add to new parents */
 729             for (it = self->group->members; it; it = it->next)
 730                 if (it->data != self &&
 731                     !((Client*)it->data)->transient_for)
 732                     ((Client*)it->data)->transients =
 733                         g_slist_append(((Client*)it->data)->transients, self);
 734
 735             /* remove all transients which are in the group, that causes
 736                circlular pointer hell of doom */
 737             for (it = self->group->members; it; it = it->next) {
 738                 GSList *sit, *next;
 739                 for (sit = self->transients; sit; sit = next) {
 740                     next = sit->next;
 741                     if (sit->data == it->data)
 742                         self->transients = g_slist_remove(self->transients,
 743                                                           sit->data);
 744                 }
 745             }
 746         } else if (self->transient_for != NULL) { /* transient of window */
 747             /* add to new parent */
 748             self->transient_for->transients =
 749                 g_slist_append(self->transient_for->transients, self);
 750         }
 751     }
 752 }
 753
 754 static void client_get_mwm_hints(Client *self)
 755 {
 756     guint num;
 757     guint32 *hints;
 758
 759     self->mwmhints.flags = 0; /* default to none */
 760
 761     if (PROP_GETA32(self->window, motif_wm_hints, motif_wm_hints,
 762                     &hints, &num)) {
 763         if (num >= MWM_ELEMENTS) {
 764             self->mwmhints.flags = hints[0];
 765             self->mwmhints.functions = hints[1];
 766             self->mwmhints.decorations = hints[2];
 767         }
 768         g_free(hints);
 769     }
 770 }
 771
 772 void client_get_type(Client *self)
 773 {
 774     guint num, i;
 775     guint32 *val;
 776
 777     self->type = -1;
 778
 779     if (PROP_GETA32(self->window, net_wm_window_type, atom, &val, &num)) {
 780         /* use the first value that we know about in the array */
 781         for (i = 0; i < num; ++i) {
 782             if (val[i] == prop_atoms.net_wm_window_type_desktop)
 783                 self->type = Type_Desktop;
 784             else if (val[i] == prop_atoms.net_wm_window_type_dock)
 785                 self->type = Type_Dock;
 786             else if (val[i] == prop_atoms.net_wm_window_type_toolbar)
 787                 self->type = Type_Toolbar;
 788             else if (val[i] == prop_atoms.net_wm_window_type_menu)
 789                 self->type = Type_Menu;
 790             else if (val[i] == prop_atoms.net_wm_window_type_utility)
 791                 self->type = Type_Utility;
 792             else if (val[i] == prop_atoms.net_wm_window_type_splash)
 793                 self->type = Type_Splash;
 794             else if (val[i] == prop_atoms.net_wm_window_type_dialog)
 795                 self->type = Type_Dialog;
 796             else if (val[i] == prop_atoms.net_wm_window_type_normal)
 797                 self->type = Type_Normal;
 798             else if (val[i] == prop_atoms.kde_net_wm_window_type_override) {
 799                 /* prevent this window from getting any decor or
 800                    functionality */
 801                 self->mwmhints.flags &= (MwmFlag_Functions |
 802                                          MwmFlag_Decorations);
 803                 self->mwmhints.decorations = 0;
 804                 self->mwmhints.functions = 0;
 805             }
 806             if (self->type != (WindowType) -1)
 807                 break; /* grab the first legit type */
 808         }
 809         g_free(val);
 810     }
 811
 812     if (self->type == (WindowType) -1) {
 813         /*the window type hint was not set, which means we either classify
 814           ourself as a normal window or a dialog, depending on if we are a
 815           transient. */
 816         if (self->transient)
 817             self->type = Type_Dialog;
 818         else
 819             self->type = Type_Normal;
 820     }
 821 }
 822
 823 void client_update_protocols(Client *self)
 824 {
 825     guint32 *proto;
 826     guint num_return, i;
 827
 828     self->focus_notify = FALSE;
 829     self->delete_window = FALSE;
 830
 831     if (PROP_GETA32(self->window, wm_protocols, atom, &proto, &num_return)) {
 832         for (i = 0; i < num_return; ++i) {
 833             if (proto[i] == prop_atoms.wm_delete_window) {
 834                 /* this means we can request the window to close */
 835                 self->delete_window = TRUE;
 836             } else if (proto[i] == prop_atoms.wm_take_focus)
 837                 /* if this protocol is requested, then the window will be
 838                    notified whenever we want it to receive focus */
 839                 self->focus_notify = TRUE;
 840         }
 841         g_free(proto);
 842     }
 843 }
 844
 845 static void client_get_gravity(Client *self)
 846 {
 847     XWindowAttributes wattrib;
 848     Status ret;
 849
 850     ret = XGetWindowAttributes(ob_display, self->window, &wattrib);
 851     g_assert(ret != BadWindow);
 852     self->gravity = wattrib.win_gravity;
 853 }
 854
 855 void client_update_normal_hints(Client *self)
 856 {
 857     XSizeHints size;
 858     long ret;
 859     int oldgravity = self->gravity;
 860
 861     /* defaults */
 862     self->min_ratio = 0.0f;
 863     self->max_ratio = 0.0f;
 864     SIZE_SET(self->size_inc, 1, 1);
 865     SIZE_SET(self->base_size, 0, 0);
 866     SIZE_SET(self->min_size, 0, 0);
 867     SIZE_SET(self->max_size, G_MAXINT, G_MAXINT);
 868
 869     /* get the hints from the window */
 870     if (XGetWMNormalHints(ob_display, self->window, &size, &ret)) {
 871         self->positioned = !!(size.flags & (PPosition|USPosition));
 872
 873         if (size.flags & PWinGravity) {
 874             self->gravity = size.win_gravity;
 875
 876             /* if the client has a frame, i.e. has already been mapped and
 877                is changing its gravity */
 878             if (self->frame && self->gravity != oldgravity) {
 879                 /* move our idea of the client's position based on its new
 880                    gravity */
 881                 self->area.x = self->frame->area.x;
 882                 self->area.y = self->frame->area.y;
 883                 frame_frame_gravity(self->frame, &self->area.x, &self->area.y);
 884             }
 885         }
 886
 887         if (size.flags & PAspect) {
 888             if (size.min_aspect.y)
 889                 self->min_ratio = (float)size.min_aspect.x / size.min_aspect.y;
 890             if (size.max_aspect.y)
 891                 self->max_ratio = (float)size.max_aspect.x / size.max_aspect.y;
 892         }
 893
 894         if (size.flags & PMinSize)
 895             SIZE_SET(self->min_size, size.min_width, size.min_height);
 896
 897         if (size.flags & PMaxSize)
 898             SIZE_SET(self->max_size, size.max_width, size.max_height);
 899
 900         if (size.flags & PBaseSize)
 901             SIZE_SET(self->base_size, size.base_width, size.base_height);
 902
 903         if (size.flags & PResizeInc)
 904             SIZE_SET(self->size_inc, size.width_inc, size.height_inc);
 905     }
 906 }
 907
 908 void client_setup_decor_and_functions(Client *self)
 909 {
 910     /* start with everything (cept fullscreen) */
 911     self->decorations = Decor_Titlebar | Decor_Handle | Decor_Border |
 912         Decor_Icon | Decor_AllDesktops | Decor_Iconify | Decor_Maximize |
 913         Decor_Shade;
 914     self->functions = Func_Resize | Func_Move | Func_Iconify | Func_Maximize |
 915         Func_Shade;
 916     if (self->delete_window) {
 917         self->decorations |= Decor_Close;
 918         self->functions |= Func_Close;
 919     }
 920
 921     if (!(self->min_size.width < self->max_size.width ||
 922           self->min_size.height < self->max_size.height)) {
 923         self->decorations &= ~(Decor_Maximize | Decor_Handle);
 924         self->functions &= ~(Func_Resize | Func_Maximize);
 925     }
 926
 927     switch (self->type) {
 928     case Type_Normal:
 929         /* normal windows retain all of the possible decorations and
 930            functionality, and are the only windows that you can fullscreen */
 931         self->functions |= Func_Fullscreen;
 932         break;
 933
 934     case Type_Dialog:
 935     case Type_Utility:
 936         /* these windows cannot be maximized */
 937         self->decorations &= ~Decor_Maximize;
 938         self->functions &= ~Func_Maximize;
 939         break;
 940
 941     case Type_Menu:
 942     case Type_Toolbar:
 943         /* these windows get less functionality */
 944         self->decorations &= ~(Decor_Iconify | Decor_Handle);
 945         self->functions &= ~(Func_Iconify | Func_Resize);
 946         break;
 947
 948     case Type_Desktop:
 949     case Type_Dock:
 950     case Type_Splash:
 951         /* none of these windows are manipulated by the window manager */
 952         self->decorations = 0;
 953         self->functions = 0;
 954         break;
 955     }
 956
 957     /* Mwm Hints are applied subtractively to what has already been chosen for
 958        decor and functionality */
 959     if (self->mwmhints.flags & MwmFlag_Decorations) {
 960         if (! (self->mwmhints.decorations & MwmDecor_All)) {
 961             if (! (self->mwmhints.decorations & MwmDecor_Border))
 962                 self->decorations &= ~Decor_Border;
 963             if (! (self->mwmhints.decorations & MwmDecor_Handle))
 964                 self->decorations &= ~Decor_Handle;
 965             if (! (self->mwmhints.decorations & MwmDecor_Title))
 966                 self->decorations &= ~Decor_Titlebar;
 967             if (! (self->mwmhints.decorations & MwmDecor_Iconify))
 968                 self->decorations &= ~Decor_Iconify;
 969             if (! (self->mwmhints.decorations & MwmDecor_Maximize))
 970                 self->decorations &= ~Decor_Maximize;
 971         }
 972     }
 973
 974     if (self->mwmhints.flags & MwmFlag_Functions) {
 975         if (! (self->mwmhints.functions & MwmFunc_All)) {
 976             if (! (self->mwmhints.functions & MwmFunc_Resize))
 977                 self->functions &= ~Func_Resize;
 978             if (! (self->mwmhints.functions & MwmFunc_Move))
 979                 self->functions &= ~Func_Move;
 980             if (! (self->mwmhints.functions & MwmFunc_Iconify))
 981                 self->functions &= ~Func_Iconify;
 982             if (! (self->mwmhints.functions & MwmFunc_Maximize))
 983                 self->functions &= ~Func_Maximize;
 984             /* dont let mwm hints kill the close button
 985                if (! (self->mwmhints.functions & MwmFunc_Close))
 986                self->functions &= ~Func_Close; */
 987         }
 988     }
 989
 990     /* can't maximize without moving/resizing */
 991     if (!((self->functions & Func_Move) && (self->functions & Func_Resize)))
 992         self->functions &= ~(Func_Maximize | Func_Fullscreen);
 993
 994     /* finally, user specified disabled decorations are applied to subtract
 995        decorations */
 996     if (self->disabled_decorations & Decor_Titlebar)
 997         self->decorations &= ~Decor_Titlebar;
 998     if (self->disabled_decorations & Decor_Handle)
 999         self->decorations &= ~Decor_Handle;
1000     if (self->disabled_decorations & Decor_Border)
1001         self->decorations &= ~Decor_Border;
1002     if (self->disabled_decorations & Decor_Iconify)
1003         self->decorations &= ~Decor_Iconify;
1004     if (self->disabled_decorations & Decor_Maximize)
1005         self->decorations &= ~Decor_Maximize;
1006     if (self->disabled_decorations & Decor_AllDesktops)
1007         self->decorations &= ~Decor_AllDesktops;
1008     if (self->disabled_decorations & Decor_Shade)
1009         self->decorations &= ~Decor_Shade;
1010     if (self->disabled_decorations & Decor_Close)
1011         self->decorations &= ~Decor_Close;
1012
1013     /* if we don't have a titlebar, then we cannot shade! */
1014     if (!(self->decorations & Decor_Titlebar))
1015         self->functions &= ~Func_Shade;
1016
1017     /* now we need to check against rules for the client's current state */
1018     if (self->fullscreen) {
1019         self->functions &= (Func_Close | Func_Fullscreen | Func_Iconify);
1020         self->decorations = 0;
1021     }
1022
1023     client_change_allowed_actions(self);
1024
1025     if (self->frame) {
1026         /* this makes sure that these windows appear on all desktops */
1027         if (self->type == Type_Desktop && self->desktop != DESKTOP_ALL)
1028             client_set_desktop(self, DESKTOP_ALL, FALSE);
1029
1030         /* change the decors on the frame, and with more/less decorations,
1031            we may also need to be repositioned */
1032         frame_adjust_area(self->frame, TRUE, TRUE);
1033         /* with new decor, the window's maximized size may change */
1034         client_reconfigure(self);
1035     } else {
1036         /* this makes sure that these windows appear on all desktops */
1037         if (self->type == Type_Desktop && self->desktop != DESKTOP_ALL)
1038             self->desktop = DESKTOP_ALL;
1039     }
1040 }
1041
1042 static void client_change_allowed_actions(Client *self)
1043 {
1044     guint32 actions[9];
1045     int num = 0;
1046
1047     /* desktop windows are kept on all desktops */
1048     if (self->type != Type_Desktop)
1049         actions[num++] = prop_atoms.net_wm_action_change_desktop;
1050
1051     if (self->functions & Func_Shade)
1052         actions[num++] = prop_atoms.net_wm_action_shade;
1053     if (self->functions & Func_Close)
1054         actions[num++] = prop_atoms.net_wm_action_close;
1055     if (self->functions & Func_Move)
1056         actions[num++] = prop_atoms.net_wm_action_move;
1057     if (self->functions & Func_Iconify)
1058         actions[num++] = prop_atoms.net_wm_action_minimize;
1059     if (self->functions & Func_Resize)
1060         actions[num++] = prop_atoms.net_wm_action_resize;
1061     if (self->functions & Func_Fullscreen)
1062         actions[num++] = prop_atoms.net_wm_action_fullscreen;
1063     if (self->functions & Func_Maximize) {
1064         actions[num++] = prop_atoms.net_wm_action_maximize_horz;
1065         actions[num++] = prop_atoms.net_wm_action_maximize_vert;
1066     }
1067
1068     PROP_SETA32(self->window, net_wm_allowed_actions, atom, actions, num);
1069
1070     /* make sure the window isn't breaking any rules now */
1071
1072     if (!(self->functions & Func_Shade) && self->shaded) {
1073         if (self->frame) client_shade(self, FALSE);
1074         else self->shaded = FALSE;
1075     }
1076     if (!(self->functions & Func_Iconify) && self->iconic) {
1077         g_message("UNSETTING ICONIC");
1078         if (self->frame) client_iconify(self, FALSE, TRUE);
1079         else self->iconic = FALSE;
1080     }
1081     if (!(self->functions & Func_Fullscreen) && self->fullscreen) {
1082         if (self->frame) client_fullscreen(self, FALSE, TRUE);
1083         else self->fullscreen = FALSE;
1084     }
1085     if (!(self->functions & Func_Maximize) && (self->max_horz ||
1086                                                self->max_vert)) {
1087         if (self->frame) client_maximize(self, FALSE, 0, TRUE);
1088         else self->max_vert = self->max_horz = FALSE;
1089     }
1090 }
1091
1092 void client_reconfigure(Client *self)
1093 {
1094     client_configure(self, Corner_TopLeft, self->area.x, self->area.y,
1095                      self->area.width, self->area.height, TRUE, TRUE);
1096 }
1097
1098 void client_update_wmhints(Client *self)
1099 {
1100     XWMHints *hints;
1101     gboolean ur = FALSE;
1102     GSList *it;
1103
1104     /* assume a window takes input if it doesnt specify */
1105     self->can_focus = TRUE;
1106
1107     if ((hints = XGetWMHints(ob_display, self->window)) != NULL) {
1108         if (hints->flags & InputHint)
1109             self->can_focus = hints->input;
1110
1111         /* only do this when first managing the window *AND* when we aren't
1112            starting up! */
1113         if (ob_state != State_Starting && self->frame == NULL)
1114             if (hints->flags & StateHint)
1115                 self->iconic = hints->initial_state == IconicState;
1116
1117         if (hints->flags & XUrgencyHint)
1118             ur = TRUE;
1119
1120         if (!(hints->flags & WindowGroupHint))
1121             hints->window_group = None;
1122
1123         /* did the group state change? */
1124         if (hints->window_group !=
1125             (self->group ? self->group->leader : None)) {
1126             /* remove from the old group if there was one */
1127             if (self->group != NULL) {
1128                 /* remove transients of the group */
1129                 for (it = self->group->members; it; it = it->next)
1130                     self->transients = g_slist_remove(self->transients,
1131                                                       it->data);
1132                 group_remove(self->group, self);
1133                 self->group = NULL;
1134             }
1135             if (hints->window_group != None) {
1136                 self->group = group_add(hints->window_group, self);
1137
1138                 /* i can only have transients from the group if i am not
1139                    transient myself */
1140                 if (!self->transient_for) {
1141                     /* add other transients of the group that are already
1142                        set up */
1143                     for (it = self->group->members; it; it = it->next)
1144                         if (it->data != self &&
1145                             ((Client*)it->data)->transient_for == TRAN_GROUP)
1146                             self->transients = g_slist_append(self->transients,
1147                                                               it->data);
1148                 }
1149             }
1150
1151             /* the WM_HINTS can contain an icon */
1152             client_update_icons(self);
1153
1154             /* because the self->transient flag wont change from this call,
1155                we don't need to update the window's type and such, only its
1156                transient_for, and the transients lists of other windows in
1157                the group may be affected */
1158             client_update_transient_for(self);
1159         }
1160
1161         XFree(hints);
1162     }
1163
1164     if (ur != self->urgent) {
1165         self->urgent = ur;
1166         g_message("Urgent Hint for 0x%lx: %s", self->window,
1167                   ur ? "ON" : "OFF");
1168         /* fire the urgent callback if we're mapped, otherwise, wait until
1169            after we're mapped */
1170         if (self->frame)
1171             dispatch_client(Event_Client_Urgent, self, self->urgent, 0);
1172     }
1173 }
1174
1175 void client_update_title(Client *self)
1176 {
1177     GList *it;
1178     guint32 nums;
1179     guint i;
1180     char *data = NULL;
1181     gboolean read_title;
1182
1183     g_free(self->title);
1184
1185     /* try netwm */
1186     if (!PROP_GETS(self->window, net_wm_name, utf8, &data))
1187         /* try old x stuff */
1188         if (!PROP_GETS(self->window, wm_name, locale, &data))
1189             data = g_strdup("Unnamed Window");
1190
1191     /* look for duplicates and append a number */
1192     nums = 0;
1193     for (it = client_list; it; it = it->next)
1194         if (it->data != self) {
1195             Client *c = it->data;
1196             if (0 == strncmp(c->title, data, strlen(data)))
1197                 nums |= 1 << c->title_count;
1198         }
1199     /* find first free number */
1200     for (i = 1; i <= 32; ++i)
1201         if (!(nums & (1 << i))) {
1202             if (self->title_count == 1 || i == 1)
1203                 self->title_count = i;
1204             break;
1205         }
1206     /* dont display the number for the first window */
1207     if (self->title_count > 1) {
1208         char *vdata, *ndata;
1209         ndata = g_strdup_printf(" - [%u]", self->title_count);
1210         vdata = g_strconcat(data, ndata, NULL);
1211         g_free(ndata);
1212         g_free(data);
1213         data = vdata;
1214     }
1215
1216     PROP_SETS(self->window, net_wm_visible_name, data);
1217
1218     self->title = data;
1219
1220     if (self->frame)
1221         frame_adjust_title(self->frame);
1222
1223     /* update the icon title */
1224     data = NULL;
1225     g_free(self->icon_title);
1226
1227     read_title = TRUE;
1228     /* try netwm */
1229     if (!PROP_GETS(self->window, net_wm_icon_name, utf8, &data))
1230         /* try old x stuff */
1231         if (!PROP_GETS(self->window, wm_icon_name, locale, &data)) {
1232             data = g_strdup(self->title);
1233             read_title = FALSE;
1234         }
1235
1236     /* append the title count, dont display the number for the first window */
1237     if (read_title && self->title_count > 1) {
1238         char *vdata, *ndata;
1239         ndata = g_strdup_printf(" - [%u]", self->title_count);
1240         vdata = g_strconcat(data, ndata, NULL);
1241         g_free(ndata);
1242         g_free(data);
1243         data = vdata;
1244     }
1245
1246     PROP_SETS(self->window, net_wm_visible_icon_name, data);
1247
1248     self->icon_title = data;
1249 }
1250
1251 void client_update_class(Client *self)
1252 {
1253     char **data;
1254     char *s;
1255
1256     if (self->name) g_free(self->name);
1257     if (self->class) g_free(self->class);
1258     if (self->role) g_free(self->role);
1259
1260     self->name = self->class = self->role = NULL;
1261
1262     if (PROP_GETSS(self->window, wm_class, locale, &data)) {
1263         if (data[0]) {
1264             self->name = g_strdup(data[0]);
1265             if (data[1])
1266                 self->class = g_strdup(data[1]);
1267         }
1268         g_strfreev(data);
1269     }
1270
1271     if (PROP_GETS(self->window, wm_window_role, locale, &s))
1272         self->role = g_strdup(s);
1273
1274     if (self->name == NULL) self->name = g_strdup("");
1275     if (self->class == NULL) self->class = g_strdup("");
1276     if (self->role == NULL) self->role = g_strdup("");
1277 }
1278
1279 void client_update_strut(Client *self)
1280 {
1281     guint num;
1282     guint32 *data;
1283
1284     if (!PROP_GETA32(self->window, net_wm_strut, cardinal, &data, &num)) {
1285         STRUT_SET(self->strut, 0, 0, 0, 0);
1286     } else {
1287         if (num == 4)
1288             STRUT_SET(self->strut, data[0], data[2], data[1], data[3]);
1289         else
1290             STRUT_SET(self->strut, 0, 0, 0, 0);
1291         g_free(data);
1292     }
1293
1294     /* updating here is pointless while we're being mapped cuz we're not in
1295        the client list yet */
1296     if (self->frame)
1297         screen_update_struts();
1298 }
1299
1300 void client_update_icons(Client *self)
1301 {
1302     guint num;
1303     guint32 *data;
1304     guint w, h, i;
1305     int j;
1306
1307     for (j = 0; j < self->nicons; ++j)
1308         g_free(self->icons[j].data);
1309     if (self->nicons > 0)
1310         g_free(self->icons);
1311     self->nicons = 0;
1312
1313     if (PROP_GETA32(self->window, net_wm_icon, cardinal, &data, &num)) {
1314         /* figure out how many valid icons are in here */
1315         i = 0;
1316         while (num - i > 2) {
1317             w = data[i++];
1318             h = data[i++];
1319             i += w * h;
1320             if (i > num || w*h == 0) break;
1321             ++self->nicons;
1322         }
1323
1324         self->icons = g_new(Icon, self->nicons);
1325
1326         /* store the icons */
1327         i = 0;
1328         for (j = 0; j < self->nicons; ++j) {
1329             guint x, y, t;
1330
1331             w = self->icons[j].width = data[i++];
1332             h = self->icons[j].height = data[i++];
1333
1334             if (w*h == 0) continue;
1335
1336             self->icons[j].data = g_new(pixel32, w * h);
1337             for (x = 0, y = 0, t = 0; t < w * h; ++t, ++x, ++i) {
1338                 if (x >= w) {
1339                     x = 0;
1340                     ++y;
1341                 }
1342                 self->icons[j].data[t] =
1343                     (((data[i] >> 24) & 0xff) << default_alpha_offset) +
1344                     (((data[i] >> 16) & 0xff) << default_red_offset) +
1345                     (((data[i] >> 8) & 0xff) << default_green_offset) +
1346                     (((data[i] >> 0) & 0xff) << default_blue_offset);
1347             }
1348             g_assert(i <= num);
1349         }
1350
1351         g_free(data);
1352     } else if (PROP_GETA32(self->window, kwm_win_icon,
1353                            kwm_win_icon, &data, &num)) {
1354         if (num == 2) {
1355             self->nicons++;
1356             self->icons = g_new(Icon, self->nicons);
1357             xerror_set_ignore(TRUE);
1358             if (!render_pixmap_to_rgba(data[0], data[1],
1359                                        &self->icons[self->nicons-1].width,
1360                                        &self->icons[self->nicons-1].height,
1361                                        &self->icons[self->nicons-1].data)) {
1362                 g_free(&self->icons[self->nicons-1]);
1363                 self->nicons--;
1364             }
1365             xerror_set_ignore(FALSE);
1366         }
1367         g_free(data);
1368     } else {
1369         XWMHints *hints;
1370
1371         if ((hints = XGetWMHints(ob_display, self->window))) {
1372             if (hints->flags & IconPixmapHint) {
1373                 self->nicons++;
1374                 self->icons = g_new(Icon, self->nicons);
1375                 xerror_set_ignore(TRUE);
1376                 if (!render_pixmap_to_rgba(hints->icon_pixmap,
1377                                            (hints->flags & IconMaskHint ?
1378                                             hints->icon_mask : None),
1379                                            &self->icons[self->nicons-1].width,
1380                                            &self->icons[self->nicons-1].height,
1381                                            &self->icons[self->nicons-1].data)){
1382                     g_free(&self->icons[self->nicons-1]);
1383                     self->nicons--;
1384                 }
1385                 xerror_set_ignore(FALSE);
1386             }
1387             XFree(hints);
1388         }
1389     }
1390
1391     if (self->frame)
1392         frame_adjust_icon(self->frame);
1393 }
1394
1395 static void client_change_state(Client *self)
1396 {
1397     guint32 state[2];
1398     guint32 netstate[10];
1399     guint num;
1400
1401     state[0] = self->wmstate;
1402     state[1] = None;
1403     PROP_SETA32(self->window, wm_state, wm_state, state, 2);
1404
1405     num = 0;
1406     if (self->modal)
1407         netstate[num++] = prop_atoms.net_wm_state_modal;
1408     if (self->shaded)
1409         netstate[num++] = prop_atoms.net_wm_state_shaded;
1410     if (self->iconic)
1411         netstate[num++] = prop_atoms.net_wm_state_hidden;
1412     if (self->skip_taskbar)
1413         netstate[num++] = prop_atoms.net_wm_state_skip_taskbar;
1414     if (self->skip_pager)
1415         netstate[num++] = prop_atoms.net_wm_state_skip_pager;
1416     if (self->fullscreen)
1417         netstate[num++] = prop_atoms.net_wm_state_fullscreen;
1418     if (self->max_vert)
1419         netstate[num++] = prop_atoms.net_wm_state_maximized_vert;
1420     if (self->max_horz)
1421         netstate[num++] = prop_atoms.net_wm_state_maximized_horz;
1422     if (self->above)
1423         netstate[num++] = prop_atoms.net_wm_state_above;
1424     if (self->below)
1425         netstate[num++] = prop_atoms.net_wm_state_below;
1426     PROP_SETA32(self->window, net_wm_state, atom, netstate, num);
1427
1428     client_calc_layer(self);
1429
1430     if (self->frame)
1431         frame_adjust_state(self->frame);
1432 }
1433
1434 Client *client_search_focus_tree(Client *self)
1435 {
1436     GSList *it;
1437     Client *ret;
1438
1439     for (it = self->transients; it != NULL; it = it->next) {
1440         if (client_focused(it->data)) return it->data;
1441         if ((ret = client_search_focus_tree(it->data))) return ret;
1442     }
1443     return NULL;
1444 }
1445
1446 Client *client_search_focus_tree_full(Client *self)
1447 {
1448     if (self->transient_for) {
1449         if (self->transient_for != TRAN_GROUP) {
1450             return client_search_focus_tree_full(self->transient_for);
1451         } else {
1452             GSList *it;
1453             gboolean recursed = FALSE;
1454
1455             for (it = self->group->members; it; it = it->next)
1456                 if (!((Client*)it->data)->transient_for) {
1457                     Client *c;
1458                     if ((c = client_search_focus_tree_full(it->data)))
1459                         return c;
1460                     recursed = TRUE;
1461                 }
1462             if (recursed)
1463               return NULL;
1464         }
1465     }
1466
1467     /* this function checks the whole tree, the client_search_focus_tree~
1468        does not, so we need to check this window */
1469     if (client_focused(self))
1470       return self;
1471     return client_search_focus_tree(self);
1472 }
1473
1474 static StackLayer calc_layer(Client *self)
1475 {
1476     StackLayer l;
1477
1478     if (self->fullscreen) l = Layer_Fullscreen;
1479     else if (self->type == Type_Desktop) l = Layer_Desktop;
1480     else if (self->type == Type_Dock) {
1481         if (!self->below) l = Layer_Top;
1482         else l = Layer_Normal;
1483     }
1484     else if (self->above) l = Layer_Above;
1485     else if (self->below) l = Layer_Below;
1486     else l = Layer_Normal;
1487
1488     return l;
1489 }
1490
1491 static void calc_recursive(Client *self, Client *orig, StackLayer l,
1492                            gboolean raised)
1493 {
1494     StackLayer old, own;
1495     GSList *it;
1496
1497     old = self->layer;
1498     own = calc_layer(self);
1499     self->layer = l > own ? l : own;
1500
1501     for (it = self->transients; it; it = it->next)
1502         calc_recursive(it->data, orig, l, raised ? raised : l != old);
1503
1504     if (!raised && l != old)
1505         if (orig->frame) /* only restack if the original window is managed */
1506             stacking_raise(CLIENT_AS_WINDOW(self));
1507 }
1508
1509 void client_calc_layer(Client *self)
1510 {
1511     StackLayer l;
1512     Client *orig;
1513
1514     orig = self;
1515
1516     /* transients take on the layer of their parents */
1517     if (self->transient_for) {
1518         if (self->transient_for != TRAN_GROUP) {
1519             self = self->transient_for;
1520         } else {
1521             GSList *it;
1522
1523             for (it = self->group->members; it; it = it->next)
1524                 if (it->data != self &&
1525                     !((Client*)it->data)->transient_for) {
1526                     self = it->data;
1527                     break;
1528                 }
1529         }
1530     }
1531
1532     l = calc_layer(self);
1533
1534     calc_recursive(self, orig, l, FALSE);
1535 }
1536
1537 gboolean client_should_show(Client *self)
1538 {
1539     if (self->iconic) return FALSE;
1540     else if (!(self->desktop == screen_desktop ||
1541                self->desktop == DESKTOP_ALL)) return FALSE;
1542     else if (client_normal(self) && screen_showing_desktop) return FALSE;
1543
1544     return TRUE;
1545 }
1546
1547 static void client_showhide(Client *self)
1548 {
1549
1550     if (client_should_show(self))
1551         frame_show(self->frame);
1552     else
1553         frame_hide(self->frame);
1554 }
1555
1556 gboolean client_normal(Client *self) {
1557     return ! (self->type == Type_Desktop || self->type == Type_Dock ||
1558               self->type == Type_Splash);
1559 }
1560
1561 static void client_apply_startup_state(Client *self)
1562 {
1563     /* these are in a carefully crafted order.. */
1564
1565     if (self->iconic) {
1566         self->iconic = FALSE;
1567         client_iconify(self, TRUE, FALSE);
1568     }
1569     if (self->fullscreen) {
1570         self->fullscreen = FALSE;
1571         client_fullscreen(self, TRUE, FALSE);
1572     }
1573     if (self->shaded) {
1574         self->shaded = FALSE;
1575         client_shade(self, TRUE);
1576     }
1577     if (self->urgent)
1578         dispatch_client(Event_Client_Urgent, self, self->urgent, 0);
1579
1580     if (self->max_vert && self->max_horz) {
1581         self->max_vert = self->max_horz = FALSE;
1582         client_maximize(self, TRUE, 0, FALSE);
1583     } else if (self->max_vert) {
1584         self->max_vert = FALSE;
1585         client_maximize(self, TRUE, 2, FALSE);
1586     } else if (self->max_horz) {
1587         self->max_horz = FALSE;
1588         client_maximize(self, TRUE, 1, FALSE);
1589     }
1590
1591     /* nothing to do for the other states:
1592        skip_taskbar
1593        skip_pager
1594        modal
1595        above
1596        below
1597     */
1598 }
1599
1600 void client_configure(Client *self, Corner anchor, int x, int y, int w, int h,
1601                       gboolean user, gboolean final)
1602 {
1603     gboolean moved = FALSE, resized = FALSE;
1604
1605     /* gets the frame's position */
1606     frame_client_gravity(self->frame, &x, &y);
1607
1608     /* these positions are frame positions, not client positions */
1609
1610     /* set the size and position if fullscreen */
1611     if (self->fullscreen) {
1612 #ifdef VIDMODE
1613         int dot;
1614         XF86VidModeModeLine mode;
1615
1616         if (XF86VidModeGetModeLine(ob_display, ob_screen, &dot, &mode)) {
1617             w = mode.hdisplay;
1618             h = mode.vdisplay;
1619             if (mode.privsize) XFree(mode.private);
1620         } else {
1621 #else
1622             w = screen_physical_size.width;
1623             h = screen_physical_size.height;
1624 #endif
1625 #ifdef VIDMODE
1626         }
1627         if (!XF86VidModeGetViewPort(ob_display, ob_screen, &x, &y)) {
1628             x = y = 0;
1629 #endif
1630         }
1631         user = FALSE; /* ignore that increment etc shit when in fullscreen */
1632     } else {
1633         /* set the size and position if maximized */
1634         if (self->max_horz) {
1635             x = screen_area(self->desktop)->x - self->frame->size.left;
1636             w = screen_area(self->desktop)->width;
1637         }
1638         if (self->max_vert) {
1639             y = screen_area(self->desktop)->y;
1640             h = screen_area(self->desktop)->height -
1641                 self->frame->size.top - self->frame->size.bottom;
1642         }
1643     }
1644
1645     /* gets the client's position */
1646     frame_frame_gravity(self->frame, &x, &y);
1647
1648     /* these override the above states! if you cant move you can't move! */
1649     if (user) {
1650         if (!(self->functions & Func_Move)) {
1651             x = self->area.x;
1652             y = self->area.y;
1653         }
1654         if (!(self->functions & Func_Resize)) {
1655             w = self->area.width;
1656             h = self->area.height;
1657         }
1658     }
1659
1660     if (!(w == self->area.width && h == self->area.height)) {
1661         int basew, baseh, minw, minh;
1662
1663         /* base size is substituted with min size if not specified */
1664         if (self->base_size.width || self->base_size.height) {
1665             basew = self->base_size.width;
1666             baseh = self->base_size.height;
1667         } else {
1668             basew = self->min_size.width;
1669             baseh = self->min_size.height;
1670         }
1671         /* min size is substituted with base size if not specified */
1672         if (self->min_size.width || self->min_size.height) {
1673             minw = self->min_size.width;
1674             minh = self->min_size.height;
1675         } else {
1676             minw = self->base_size.width;
1677             minh = self->base_size.height;
1678         }
1679
1680         w -= basew;
1681         h -= baseh;
1682
1683         if (user) {
1684             /* for interactive resizing. have to move half an increment in each
1685                direction. */
1686
1687             /* how far we are towards the next size inc */
1688             int mw = w % self->size_inc.width;
1689             int mh = h % self->size_inc.height;
1690             /* amount to add */
1691             int aw = self->size_inc.width / 2;
1692             int ah = self->size_inc.height / 2;
1693             /* don't let us move into a new size increment */
1694             if (mw + aw >= self->size_inc.width)
1695                 aw = self->size_inc.width - mw - 1;
1696             if (mh + ah >= self->size_inc.height)
1697                 ah = self->size_inc.height - mh - 1;
1698             w += aw;
1699             h += ah;
1700
1701             /* if this is a user-requested resize, then check against min/max
1702                sizes */
1703
1704             /* smaller than min size or bigger than max size? */
1705             if (w > self->max_size.width) w = self->max_size.width;
1706             if (w < minw) w = minw;
1707             if (h > self->max_size.height) h = self->max_size.height;
1708             if (h < minh) h = minh;
1709         }
1710
1711         /* keep to the increments */
1712         w /= self->size_inc.width;
1713         h /= self->size_inc.height;
1714
1715         /* you cannot resize to nothing */
1716         if (w < 1) w = 1;
1717         if (h < 1) h = 1;
1718
1719         /* store the logical size */
1720         SIZE_SET(self->logical_size, w, h);
1721
1722         w *= self->size_inc.width;
1723         h *= self->size_inc.height;
1724
1725         w += basew;
1726         h += baseh;
1727
1728         if (user) {
1729             /* adjust the height to match the width for the aspect ratios.
1730              for this, min size is not substituted for base size ever. */
1731             w -= self->base_size.width;
1732             h -= self->base_size.height;
1733
1734             if (self->min_ratio)
1735                 if (h * self->min_ratio > w) h = (int)(w / self->min_ratio);
1736             if (self->max_ratio)
1737                 if (h * self->max_ratio < w) h = (int)(w / self->max_ratio);
1738
1739             w += self->base_size.width;
1740             h += self->base_size.height;
1741         }
1742     }
1743
1744     switch (anchor) {
1745     case Corner_TopLeft:
1746         break;
1747     case Corner_TopRight:
1748         x -= w - self->area.width;
1749         break;
1750     case Corner_BottomLeft:
1751         y -= h - self->area.height;
1752         break;
1753     case Corner_BottomRight:
1754         x -= w - self->area.width;
1755         y -= h - self->area.height;
1756         break;
1757     }
1758
1759     moved = x != self->area.x || y != self->area.y;
1760     resized = w != self->area.width || h != self->area.height;
1761
1762     RECT_SET(self->area, x, y, w, h);
1763
1764     if (final || (resized && config_opaque_resize))
1765         XResizeWindow(ob_display, self->window, w, h);
1766
1767     /* move/resize the frame to match the request */
1768     if (self->frame) {
1769         if (moved || resized)
1770             frame_adjust_area(self->frame, moved, resized);
1771
1772         if (!user || final) {
1773             XEvent event;
1774             event.type = ConfigureNotify;
1775             event.xconfigure.display = ob_display;
1776             event.xconfigure.event = self->window;
1777             event.xconfigure.window = self->window;
1778
1779             /* root window real coords */
1780             event.xconfigure.x = self->frame->area.x + self->frame->size.left;
1781             event.xconfigure.y = self->frame->area.y + self->frame->size.top;
1782
1783             event.xconfigure.width = w;
1784             event.xconfigure.height = h;
1785             event.xconfigure.border_width = 0;
1786             event.xconfigure.above = self->frame->plate;
1787             event.xconfigure.override_redirect = FALSE;
1788             XSendEvent(event.xconfigure.display, event.xconfigure.window,
1789                        FALSE, StructureNotifyMask, &event);
1790         }
1791     }
1792 }
1793
1794 void client_fullscreen(Client *self, gboolean fs, gboolean savearea)
1795 {
1796     int x, y, w, h;
1797
1798     if (!(self->functions & Func_Fullscreen) || /* can't */
1799         self->fullscreen == fs) return;         /* already done */
1800
1801     self->fullscreen = fs;
1802     client_change_state(self); /* change the state hints on the client,
1803                                   and adjust out layer/stacking */
1804
1805     if (fs) {
1806         if (savearea) {
1807             guint32 dimensions[4];
1808             dimensions[0] = self->area.x;
1809             dimensions[1] = self->area.y;
1810             dimensions[2] = self->area.width;
1811             dimensions[3] = self->area.height;
1812
1813             PROP_SETA32(self->window, openbox_premax, cardinal,
1814                         dimensions, 4);
1815         }
1816
1817         /* these are not actually used cuz client_configure will set them
1818            as appropriate when the window is fullscreened */
1819         x = y = w = h = 0;
1820     } else {
1821         guint num;
1822         gint32 *dimensions;
1823
1824         /* pick some fallbacks... */
1825         x = screen_area(self->desktop)->x +
1826             screen_area(self->desktop)->width / 4;
1827         y = screen_area(self->desktop)->y +
1828             screen_area(self->desktop)->height / 4;
1829         w = screen_area(self->desktop)->width / 2;
1830         h = screen_area(self->desktop)->height / 2;
1831
1832         if (PROP_GETA32(self->window, openbox_premax, cardinal,
1833                         (guint32**)&dimensions, &num)) {
1834             if (num == 4) {
1835                 x = dimensions[0];
1836                 y = dimensions[1];
1837                 w = dimensions[2];
1838                 h = dimensions[3];
1839             }
1840             g_free(dimensions);
1841         }
1842     }
1843
1844     client_setup_decor_and_functions(self);
1845
1846     client_configure(self, Corner_TopLeft, x, y, w, h, TRUE, TRUE);
1847
1848     /* try focus us when we go into fullscreen mode */
1849     client_focus(self);
1850 }
1851
1852 void client_iconify(Client *self, gboolean iconic, gboolean curdesk)
1853 {
1854     GSList *it;
1855
1856     /* move up the transient chain as far as possible first */
1857     if (self->transient_for) {
1858         if (self->transient_for != TRAN_GROUP) {
1859             if (self->transient_for->iconic != iconic) {
1860                 client_iconify(self->transient_for, iconic, curdesk);
1861                 return;
1862             }
1863         } else {
1864             GSList *it;
1865
1866             for (it = self->group->members; it; it = it->next) {
1867                 Client *c = it->data;
1868                 if (c != self && c->iconic != iconic &&
1869                     !c->transient_for) {
1870                     client_iconify(it->data, iconic, curdesk);
1871                     break;
1872                 }
1873             }
1874             if (it != NULL) return;
1875         }
1876     }
1877
1878     if (self->iconic == iconic) return; /* nothing to do */
1879
1880     g_message("%sconifying window: 0x%lx", (iconic ? "I" : "Uni"),
1881               self->window);
1882
1883     self->iconic = iconic;
1884
1885     if (iconic) {
1886         self->wmstate = IconicState;
1887         self->ignore_unmaps++;
1888         /* we unmap the client itself so that we can get MapRequest events,
1889            and because the ICCCM tells us to! */
1890         XUnmapWindow(ob_display, self->window);
1891
1892         /* update the focus lists.. iconic windows go to the bottom of the
1893          list, put the new iconic window at the 'top of the bottom'. */
1894         focus_order_to_top(self);
1895     } else {
1896         if (curdesk)
1897             client_set_desktop(self, screen_desktop, FALSE);
1898         self->wmstate = self->shaded ? IconicState : NormalState;
1899         XMapWindow(ob_display, self->window);
1900
1901         /* this puts it after the current focused window */
1902         focus_order_remove(self);
1903         focus_order_add_new(self);
1904
1905         /* this is here cuz with the VIDMODE extension, the viewport can change
1906            while a fullscreen window is iconic, and when it uniconifies, it
1907            would be nice if it did so to the new position of the viewport */
1908         client_reconfigure(self);
1909     }
1910     client_change_state(self);
1911     client_showhide(self);
1912     screen_update_struts();
1913
1914     dispatch_client(iconic ? Event_Client_Unmapped : Event_Client_Mapped,
1915                     self, 0, 0);
1916
1917     /* iconify all transients */
1918     for (it = self->transients; it != NULL; it = it->next)
1919         if (it->data != self) client_iconify(it->data, iconic, curdesk);
1920 }
1921
1922 void client_maximize(Client *self, gboolean max, int dir, gboolean savearea)
1923 {
1924     int x, y, w, h;
1925
1926     g_assert(dir == 0 || dir == 1 || dir == 2);
1927     if (!(self->functions & Func_Maximize)) return; /* can't */
1928
1929     /* check if already done */
1930     if (max) {
1931         if (dir == 0 && self->max_horz && self->max_vert) return;
1932         if (dir == 1 && self->max_horz) return;
1933         if (dir == 2 && self->max_vert) return;
1934     } else {
1935         if (dir == 0 && !self->max_horz && !self->max_vert) return;
1936         if (dir == 1 && !self->max_horz) return;
1937         if (dir == 2 && !self->max_vert) return;
1938     }
1939
1940     /* work with the frame's coords */
1941     x = self->frame->area.x;
1942     y = self->frame->area.y;
1943     w = self->area.width;
1944     h = self->area.height;
1945
1946     if (max) {
1947         if (savearea) {
1948             gint32 dimensions[4];
1949             gint32 *readdim;
1950             guint num;
1951
1952             dimensions[0] = x;
1953             dimensions[1] = y;
1954             dimensions[2] = w;
1955             dimensions[3] = h;
1956
1957             /* get the property off the window and use it for the dimensions
1958                we are already maxed on */
1959             if (PROP_GETA32(self->window, openbox_premax, cardinal,
1960                             (guint32**)&readdim, &num)) {
1961                 if (num == 4) {
1962                     if (self->max_horz) {
1963                         dimensions[0] = readdim[0];
1964                         dimensions[2] = readdim[2];
1965                     }
1966                     if (self->max_vert) {
1967                         dimensions[1] = readdim[1];
1968                         dimensions[3] = readdim[3];
1969                     }
1970                 }
1971                 g_free(readdim);
1972             }
1973
1974             PROP_SETA32(self->window, openbox_premax, cardinal,
1975                         (guint32*)dimensions, 4);
1976         }
1977     } else {
1978         guint num;
1979         gint32 *dimensions;
1980
1981         /* pick some fallbacks... */
1982         if (dir == 0 || dir == 1) { /* horz */
1983             x = screen_area(self->desktop)->x +
1984                 screen_area(self->desktop)->width / 4;
1985             w = screen_area(self->desktop)->width / 2;
1986         }
1987         if (dir == 0 || dir == 2) { /* vert */
1988             y = screen_area(self->desktop)->y +
1989                 screen_area(self->desktop)->height / 4;
1990             h = screen_area(self->desktop)->height / 2;
1991         }
1992
1993         if (PROP_GETA32(self->window, openbox_premax, cardinal,
1994                         (guint32**)&dimensions, &num)) {
1995             if (num == 4) {
1996                 if (dir == 0 || dir == 1) { /* horz */
1997                     x = dimensions[0];
1998                     w = dimensions[2];
1999                 }
2000                 if (dir == 0 || dir == 2) { /* vert */
2001                     y = dimensions[1];
2002                     h = dimensions[3];
2003                 }
2004             }
2005             g_free(dimensions);
2006         }
2007     }
2008
2009     if (dir == 0 || dir == 1) /* horz */
2010         self->max_horz = max;
2011     if (dir == 0 || dir == 2) /* vert */
2012         self->max_vert = max;
2013
2014     if (!self->max_horz && !self->max_vert)
2015         PROP_ERASE(self->window, openbox_premax);
2016
2017     client_change_state(self); /* change the state hints on the client */
2018
2019     /* figure out where the client should be going */
2020     frame_frame_gravity(self->frame, &x, &y);
2021     client_configure(self, Corner_TopLeft, x, y, w, h, TRUE, TRUE);
2022 }
2023
2024 void client_shade(Client *self, gboolean shade)
2025 {
2026     if ((!(self->functions & Func_Shade) && shade) || /* can't shade */
2027         self->shaded == shade) return;     /* already done */
2028
2029     /* when we're iconic, don't change the wmstate */
2030     if (!self->iconic)
2031         self->wmstate = shade ? IconicState : NormalState;
2032     self->shaded = shade;
2033     client_change_state(self);
2034     /* resize the frame to just the titlebar */
2035     frame_adjust_area(self->frame, FALSE, FALSE);
2036 }
2037
2038 void client_close(Client *self)
2039 {
2040     XEvent ce;
2041
2042     if (!(self->functions & Func_Close)) return;
2043
2044     /*
2045       XXX: itd be cool to do timeouts and shit here for killing the client's
2046       process off
2047       like... if the window is around after 5 seconds, then the close button
2048       turns a nice red, and if this function is called again, the client is
2049       explicitly killed.
2050     */
2051
2052     ce.xclient.type = ClientMessage;
2053     ce.xclient.message_type =  prop_atoms.wm_protocols;
2054     ce.xclient.display = ob_display;
2055     ce.xclient.window = self->window;
2056     ce.xclient.format = 32;
2057     ce.xclient.data.l[0] = prop_atoms.wm_delete_window;
2058     ce.xclient.data.l[1] = event_lasttime;
2059     ce.xclient.data.l[2] = 0l;
2060     ce.xclient.data.l[3] = 0l;
2061     ce.xclient.data.l[4] = 0l;
2062     XSendEvent(ob_display, self->window, FALSE, NoEventMask, &ce);
2063 }
2064
2065 void client_kill(Client *self)
2066 {
2067     XKillClient(ob_display, self->window);
2068 }
2069
2070 void client_set_desktop(Client *self, guint target, gboolean donthide)
2071 {
2072     guint old;
2073
2074     if (target == self->desktop) return;
2075
2076     g_message("Setting desktop %u", target+1);
2077
2078     g_assert(target < screen_num_desktops || target == DESKTOP_ALL);
2079
2080     /* remove from the old desktop(s) */
2081     focus_order_remove(self);
2082
2083     old = self->desktop;
2084     self->desktop = target;
2085     PROP_SET32(self->window, net_wm_desktop, cardinal, target);
2086     /* the frame can display the current desktop state */
2087     frame_adjust_state(self->frame);
2088     /* 'move' the window to the new desktop */
2089     if (!donthide)
2090         client_showhide(self);
2091     /* raise if it was not already on the desktop */
2092     if (old != DESKTOP_ALL)
2093         stacking_raise(CLIENT_AS_WINDOW(self));
2094     screen_update_struts();
2095
2096     /* add to the new desktop(s) */
2097     if (config_focus_new)
2098         focus_order_to_top(self);
2099     else
2100         focus_order_to_bottom(self);
2101
2102     dispatch_client(Event_Client_Desktop, self, target, old);
2103 }
2104
2105 Client *client_search_modal_child(Client *self)
2106 {
2107     GSList *it;
2108     Client *ret;
2109
2110     for (it = self->transients; it != NULL; it = it->next) {
2111         Client *c = it->data;
2112         if ((ret = client_search_modal_child(c))) return ret;
2113         if (c->modal) return c;
2114     }
2115     return NULL;
2116 }
2117
2118 gboolean client_validate(Client *self)
2119 {
2120     XEvent e;
2121
2122     XSync(ob_display, FALSE); /* get all events on the server */
2123
2124     if (XCheckTypedWindowEvent(ob_display, self->window, DestroyNotify, &e) ||
2125         XCheckTypedWindowEvent(ob_display, self->window, UnmapNotify, &e)) {
2126         XPutBackEvent(ob_display, &e);
2127         return FALSE;
2128     }
2129
2130     return TRUE;
2131 }
2132
2133 void client_set_wm_state(Client *self, long state)
2134 {
2135     if (state == self->wmstate) return; /* no change */
2136
2137     switch (state) {
2138     case IconicState:
2139         client_iconify(self, TRUE, TRUE);
2140         break;
2141     case NormalState:
2142         client_iconify(self, FALSE, TRUE);
2143         break;
2144     }
2145 }
2146
2147 void client_set_state(Client *self, Atom action, long data1, long data2)
2148 {
2149     gboolean shaded = self->shaded;
2150     gboolean fullscreen = self->fullscreen;
2151     gboolean max_horz = self->max_horz;
2152     gboolean max_vert = self->max_vert;
2153     int i;
2154
2155     if (!(action == prop_atoms.net_wm_state_add ||
2156           action == prop_atoms.net_wm_state_remove ||
2157           action == prop_atoms.net_wm_state_toggle))
2158         /* an invalid action was passed to the client message, ignore it */
2159         return;
2160
2161     for (i = 0; i < 2; ++i) {
2162         Atom state = i == 0 ? data1 : data2;
2163
2164         if (!state) continue;
2165
2166         /* if toggling, then pick whether we're adding or removing */
2167         if (action == prop_atoms.net_wm_state_toggle) {
2168             if (state == prop_atoms.net_wm_state_modal)
2169                 action = self->modal ? prop_atoms.net_wm_state_remove :
2170                     prop_atoms.net_wm_state_add;
2171             else if (state == prop_atoms.net_wm_state_maximized_vert)
2172                 action = self->max_vert ? prop_atoms.net_wm_state_remove :
2173                     prop_atoms.net_wm_state_add;
2174             else if (state == prop_atoms.net_wm_state_maximized_horz)
2175                 action = self->max_horz ? prop_atoms.net_wm_state_remove :
2176                     prop_atoms.net_wm_state_add;
2177             else if (state == prop_atoms.net_wm_state_shaded)
2178                 action = self->shaded ? prop_atoms.net_wm_state_remove :
2179                     prop_atoms.net_wm_state_add;
2180             else if (state == prop_atoms.net_wm_state_skip_taskbar)
2181                 action = self->skip_taskbar ?
2182                     prop_atoms.net_wm_state_remove :
2183                     prop_atoms.net_wm_state_add;
2184             else if (state == prop_atoms.net_wm_state_skip_pager)
2185                 action = self->skip_pager ?
2186                     prop_atoms.net_wm_state_remove :
2187                     prop_atoms.net_wm_state_add;
2188             else if (state == prop_atoms.net_wm_state_fullscreen)
2189                 action = self->fullscreen ?
2190                     prop_atoms.net_wm_state_remove :
2191                     prop_atoms.net_wm_state_add;
2192             else if (state == prop_atoms.net_wm_state_above)
2193                 action = self->above ? prop_atoms.net_wm_state_remove :
2194                     prop_atoms.net_wm_state_add;
2195             else if (state == prop_atoms.net_wm_state_below)
2196                 action = self->below ? prop_atoms.net_wm_state_remove :
2197                     prop_atoms.net_wm_state_add;
2198         }
2199
2200         if (action == prop_atoms.net_wm_state_add) {
2201             if (state == prop_atoms.net_wm_state_modal) {
2202                 /* XXX raise here or something? */
2203                 self->modal = TRUE;
2204             } else if (state == prop_atoms.net_wm_state_maximized_vert) {
2205                 max_vert = TRUE;
2206             } else if (state == prop_atoms.net_wm_state_maximized_horz) {
2207                 max_horz = TRUE;
2208             } else if (state == prop_atoms.net_wm_state_shaded) {
2209                 shaded = TRUE;
2210             } else if (state == prop_atoms.net_wm_state_skip_taskbar) {
2211                 self->skip_taskbar = TRUE;
2212             } else if (state == prop_atoms.net_wm_state_skip_pager) {
2213                 self->skip_pager = TRUE;
2214             } else if (state == prop_atoms.net_wm_state_fullscreen) {
2215                 fullscreen = TRUE;
2216             } else if (state == prop_atoms.net_wm_state_above) {
2217                 self->above = TRUE;
2218             } else if (state == prop_atoms.net_wm_state_below) {
2219                 self->below = TRUE;
2220             }
2221
2222         } else { /* action == prop_atoms.net_wm_state_remove */
2223             if (state == prop_atoms.net_wm_state_modal) {
2224                 self->modal = FALSE;
2225             } else if (state == prop_atoms.net_wm_state_maximized_vert) {
2226                 max_vert = FALSE;
2227             } else if (state == prop_atoms.net_wm_state_maximized_horz) {
2228                 max_horz = FALSE;
2229             } else if (state == prop_atoms.net_wm_state_shaded) {
2230                 shaded = FALSE;
2231             } else if (state == prop_atoms.net_wm_state_skip_taskbar) {
2232                 self->skip_taskbar = FALSE;
2233             } else if (state == prop_atoms.net_wm_state_skip_pager) {
2234                 self->skip_pager = FALSE;
2235             } else if (state == prop_atoms.net_wm_state_fullscreen) {
2236                 fullscreen = FALSE;
2237             } else if (state == prop_atoms.net_wm_state_above) {
2238                 self->above = FALSE;
2239             } else if (state == prop_atoms.net_wm_state_below) {
2240                 self->below = FALSE;
2241             }
2242         }
2243     }
2244     if (max_horz != self->max_horz || max_vert != self->max_vert) {
2245         if (max_horz != self->max_horz && max_vert != self->max_vert) {
2246             /* toggling both */
2247             if (max_horz == max_vert) { /* both going the same way */
2248                 client_maximize(self, max_horz, 0, TRUE);
2249             } else {
2250                 client_maximize(self, max_horz, 1, TRUE);
2251                 client_maximize(self, max_vert, 2, TRUE);
2252             }
2253         } else {
2254             /* toggling one */
2255             if (max_horz != self->max_horz)
2256                 client_maximize(self, max_horz, 1, TRUE);
2257             else
2258                 client_maximize(self, max_vert, 2, TRUE);
2259         }
2260     }
2261     /* change fullscreen state before shading, as it will affect if the window
2262        can shade or not */
2263     if (fullscreen != self->fullscreen)
2264         client_fullscreen(self, fullscreen, TRUE);
2265     if (shaded != self->shaded)
2266         client_shade(self, shaded);
2267     client_calc_layer(self);
2268     client_change_state(self); /* change the hint to reflect these changes */
2269 }
2270
2271 Client *client_focus_target(Client *self)
2272 {
2273     Client *child;
2274
2275     /* if we have a modal child, then focus it, not us */
2276     child = client_search_modal_child(self);
2277     if (child) return child;
2278     return self;
2279 }
2280
2281 gboolean client_can_focus(Client *self)
2282 {
2283     XEvent ev;
2284
2285     /* choose the correct target */
2286     self = client_focus_target(self);
2287
2288     if (!self->frame->visible)
2289         return FALSE;
2290
2291     if (!((self->can_focus || self->focus_notify) &&
2292           (self->desktop == screen_desktop ||
2293            self->desktop == DESKTOP_ALL) &&
2294           !self->iconic))
2295         return FALSE;
2296
2297     /* do a check to see if the window has already been unmapped or destroyed
2298        do this intelligently while watching out for unmaps we've generated
2299        (ignore_unmaps > 0) */
2300     if (XCheckTypedWindowEvent(ob_display, self->window,
2301                                DestroyNotify, &ev)) {
2302         XPutBackEvent(ob_display, &ev);
2303         return FALSE;
2304     }
2305     while (XCheckTypedWindowEvent(ob_display, self->window,
2306                                   UnmapNotify, &ev)) {
2307         if (self->ignore_unmaps) {
2308             self->ignore_unmaps--;
2309         } else {
2310             XPutBackEvent(ob_display, &ev);
2311             return FALSE;
2312         }
2313     }
2314
2315     return TRUE;
2316 }
2317
2318 gboolean client_focus(Client *self)
2319 {
2320     /* choose the correct target */
2321     self = client_focus_target(self);
2322
2323     if (!client_can_focus(self)) {
2324         if (!self->frame->visible) {
2325             /* update the focus lists */
2326             focus_order_to_top(self);
2327         }
2328         return FALSE;
2329     }
2330
2331     if (self->can_focus)
2332         /* RevertToPointerRoot causes much more headache than RevertToNone, so
2333            I choose to use it always, hopefully to find errors quicker, if any
2334            are left. (I hate X. I hate focus events.) */
2335         XSetInputFocus(ob_display, self->window, RevertToPointerRoot,
2336                        event_lasttime);
2337
2338     if (self->focus_notify) {
2339         XEvent ce;
2340         ce.xclient.type = ClientMessage;
2341         ce.xclient.message_type = prop_atoms.wm_protocols;
2342         ce.xclient.display = ob_display;
2343         ce.xclient.window = self->window;
2344         ce.xclient.format = 32;
2345         ce.xclient.data.l[0] = prop_atoms.wm_take_focus;
2346         ce.xclient.data.l[1] = event_lasttime;
2347         ce.xclient.data.l[2] = 0l;
2348         ce.xclient.data.l[3] = 0l;
2349         ce.xclient.data.l[4] = 0l;
2350         XSendEvent(ob_display, self->window, FALSE, NoEventMask, &ce);
2351     }
2352
2353 #ifdef DEBUG_FOCUS
2354     g_message("%sively focusing %lx at %d", (self->can_focus ? "act" : "pass"),
2355               self->window, (int)
2356               event_lasttime);
2357 #endif
2358
2359     /* Cause the FocusIn to come back to us. Important for desktop switches,
2360        since otherwise we'll have no FocusIn on the queue and send it off to
2361        the focus_backup. */
2362     XSync(ob_display, FALSE);
2363     return TRUE;
2364 }
2365
2366 void client_unfocus(Client *self)
2367 {
2368     g_assert(focus_client == self);
2369 #ifdef DEBUG_FOCUS
2370     g_message("client_unfocus for %lx", self->window);
2371 #endif
2372     focus_fallback(Fallback_Unfocusing);
2373 }
2374
2375 void client_activate(Client *self)
2376 {
2377     if (client_normal(self) && screen_showing_desktop)
2378         screen_show_desktop(FALSE);
2379     if (self->iconic)
2380         client_iconify(self, FALSE, TRUE);
2381     else if (!self->frame->visible)
2382         /* if its not visible for other reasons, then don't mess
2383            with it */
2384         return;
2385     if (self->shaded)
2386         client_shade(self, FALSE);
2387     client_focus(self);
2388     stacking_raise(CLIENT_AS_WINDOW(self));
2389 }
2390
2391 gboolean client_focused(Client *self)
2392 {
2393     return self == focus_client;
2394 }
2395
2396 Icon *client_icon(Client *self, int w, int h)
2397 {
2398     int i;
2399     /* si is the smallest image >= req */
2400     /* li is the largest image < req */
2401     unsigned long size, smallest = 0xffffffff, largest = 0, si = 0, li = 0;
2402
2403     if (!self->nicons) return NULL;
2404
2405     for (i = 0; i < self->nicons; ++i) {
2406         size = self->icons[i].width * self->icons[i].height;
2407         if (size < smallest && size >= (unsigned)(w * h)) {
2408             smallest = size;
2409             si = i;
2410         }
2411         if (size > largest && size <= (unsigned)(w * h)) {
2412             largest = size;
2413             li = i;
2414         }
2415     }
2416     if (largest == 0) /* didnt find one smaller than the requested size */
2417         return &self->icons[si];
2418     return &self->icons[li];
2419 }
2420
2421 /* this be mostly ripped from fvwm */
2422 Client *client_find_directional(Client *c, Direction dir)
2423 {
2424     int my_cx, my_cy, his_cx, his_cy;
2425     int offset = 0;
2426     int distance = 0;
2427     int score, best_score;
2428     Client *best_client, *cur;
2429     GList *it;
2430
2431     if(!client_list)
2432         return NULL;
2433
2434     /* first, find the centre coords of the currently focused window */
2435     my_cx = c->frame->area.x + c->frame->area.width / 2;
2436     my_cy = c->frame->area.y + c->frame->area.height / 2;
2437
2438     best_score = -1;
2439     best_client = NULL;
2440
2441     for(it = g_list_first(client_list); it; it = it->next) {
2442         cur = it->data;
2443
2444         /* the currently selected window isn't interesting */
2445         if(cur == c)
2446             continue;
2447         if (!client_normal(cur))
2448             continue;
2449         if(c->desktop != cur->desktop && cur->desktop != DESKTOP_ALL)
2450             continue;
2451         if(cur->iconic)
2452             continue;
2453         if(client_focus_target(cur) == cur &&
2454            !(cur->can_focus || cur->focus_notify))
2455             continue;
2456
2457         /* find the centre coords of this window, from the
2458          * currently focused window's point of view */
2459         his_cx = (cur->frame->area.x - my_cx)
2460             + cur->frame->area.width / 2;
2461         his_cy = (cur->frame->area.y - my_cy)
2462             + cur->frame->area.height / 2;
2463
2464         if(dir > 3) {
2465             int tx;
2466             /* Rotate the diagonals 45 degrees counterclockwise.
2467              * To do this, multiply the matrix /+h +h\ with the
2468              * vector (x y).                   \-h +h/
2469              * h = sqrt(0.5). We can set h := 1 since absolute
2470              * distance doesn't matter here. */
2471             tx = his_cx + his_cy;
2472             his_cy = -his_cx + his_cy;
2473             his_cx = tx;
2474         }
2475
2476         switch(dir) {
2477         case Direction_North :
2478         case Direction_South :
2479         case Direction_NorthEast :
2480         case Direction_SouthWest :
2481             offset = (his_cx < 0) ? -his_cx : his_cx;
2482             distance = (dir == Direction_North || dir == Direction_NorthEast) ?
2483                 -his_cy : his_cy;
2484             break;
2485         case Direction_East :
2486         case Direction_West :
2487         case Direction_SouthEast :
2488         case Direction_NorthWest :
2489             offset = (his_cy < 0) ? -his_cy : his_cy;
2490             distance = (dir == Direction_West || dir == Direction_NorthWest) ?
2491                 -his_cx : his_cx;
2492             break;
2493         }
2494
2495         /* the target must be in the requested direction */
2496         if(distance <= 0)
2497             continue;
2498
2499         /* Calculate score for this window.  The smaller the better. */
2500         score = distance + offset;
2501
2502         /* windows more than 45 degrees off the direction are
2503          * heavily penalized and will only be chosen if nothing
2504          * else within a million pixels */
2505         if(offset > distance)
2506             score += 1000000;
2507
2508         if(best_score == -1 || score < best_score)
2509             best_client = cur,
2510                 best_score = score;
2511     }
2512
2513     return best_client;
2514 }
2515
2516 void client_set_layer(Client *self, int layer)
2517 {
2518     if (layer < 0) {
2519         self->below = TRUE;
2520         self->above = FALSE;
2521     } else if (layer == 0) {
2522         self->below = self->above = FALSE;
2523     } else {
2524         self->below = FALSE;
2525         self->above = TRUE;
2526     }
2527     client_calc_layer(self);
2528     client_change_state(self); /* reflect this in the state hints */
2529 }