openbox/client.c

   1 #include "client.h"
   2 #include "screen.h"
   3 #include "prop.h"
   4 #include "extensions.h"
   5 #include "frame.h"
   6 #include "event.h"
   7 #include "grab.h"
   8 #include "focus.h"
   9 #include "stacking.h"
  10 #include "dispatch.h"
  11 #include "openbox.h"
  12 #include "group.h"
  13 #include "config.h"
  14
  15 #include <glib.h>
  16 #include <X11/Xutil.h>
  17
  18 /*! The event mask to grab on client windows */
  19 #define CLIENT_EVENTMASK (PropertyChangeMask | FocusChangeMask | \
  20                           StructureNotifyMask)
  21
  22 #define CLIENT_NOPROPAGATEMASK (ButtonPressMask | ButtonReleaseMask | \
  23                                 ButtonMotionMask)
  24
  25 GList      *client_list      = NULL;
  26 GHashTable *client_map       = NULL;
  27
  28 static Window *client_startup_stack_order = NULL;
  29 static guint  client_startup_stack_size = 0;
  30
  31 static void client_get_all(Client *self);
  32 static void client_toggle_border(Client *self, gboolean show);
  33 static void client_get_area(Client *self);
  34 static void client_get_desktop(Client *self);
  35 static void client_get_state(Client *self);
  36 static void client_get_shaped(Client *self);
  37 static void client_get_mwm_hints(Client *self);
  38 static void client_get_gravity(Client *self);
  39 static void client_showhide(Client *self);
  40 static void client_change_allowed_actions(Client *self);
  41 static void client_change_state(Client *self);
  42 static void client_move_onscreen(Client *self);
  43 static Client *search_focus_tree(Client *node, Client *skip);
  44 static void client_apply_startup_state(Client *self);
  45 static Client *search_modal_tree(Client *node, Client *skip);
  46
  47 static guint map_hash(Window *w) { return *w; }
  48 static gboolean map_key_comp(Window *w1, Window *w2) { return *w1 == *w2; }
  49
  50 void client_startup()
  51 {
  52     client_map = g_hash_table_new((GHashFunc)map_hash,
  53                                   (GEqualFunc)map_key_comp);
  54
  55     /* save the stacking order on startup! */
  56     PROP_GETA32(ob_root, net_client_list_stacking, window,
  57                 (guint32**)&client_startup_stack_order,
  58                 &client_startup_stack_size);
  59
  60     client_set_list();
  61 }
  62
  63 void client_shutdown()
  64 {
  65     g_hash_table_destroy(client_map);
  66 }
  67
  68 void client_set_list()
  69 {
  70     Window *windows, *win_it;
  71     GList *it;
  72     guint size = g_list_length(client_list);
  73
  74     /* create an array of the window ids */
  75     if (size > 0) {
  76         windows = g_new(Window, size);
  77         win_it = windows;
  78         for (it = client_list; it != NULL; it = it->next, ++win_it)
  79             *win_it = ((Client*)it->data)->window;
  80     } else
  81         windows = NULL;
  82
  83     PROP_SETA32(ob_root, net_client_list, window, (guint32*)windows, size);
  84
  85     if (windows)
  86         g_free(windows);
  87
  88     stacking_set_list();
  89 }
  90
  91 void client_manage_all()
  92 {
  93     unsigned int i, j, nchild;
  94     Window w, *children;
  95     XWMHints *wmhints;
  96     XWindowAttributes attrib;
  97
  98     XQueryTree(ob_display, ob_root, &w, &w, &children, &nchild);
  99
 100     /* remove all icon windows from the list */
 101     for (i = 0; i < nchild; i++) {
 102         if (children[i] == None) continue;
 103         wmhints = XGetWMHints(ob_display, children[i]);
 104         if (wmhints) {
 105             if ((wmhints->flags & IconWindowHint) &&
 106                 (wmhints->icon_window != children[i]))
 107                 for (j = 0; j < nchild; j++)
 108                     if (children[j] == wmhints->icon_window) {
 109                         children[j] = None;
 110                         break;
 111                     }
 112             XFree(wmhints);
 113         }
 114     }
 115
 116     for (i = 0; i < nchild; ++i) {
 117         if (children[i] == None)
 118             continue;
 119         if (XGetWindowAttributes(ob_display, children[i], &attrib)) {
 120             if (attrib.override_redirect) continue;
 121
 122             if (attrib.map_state != IsUnmapped)
 123                 client_manage(children[i]);
 124         }
 125     }
 126     XFree(children);
 127
 128     /* stack them as they were on startup!
 129        why with stacking_lower? Why, because then windows who aren't in the
 130        stacking list are on the top where you can see them instead of buried
 131        at the bottom! */
 132     for (i = client_startup_stack_size; i > 0; --i) {
 133         Client *c;
 134
 135         w = client_startup_stack_order[i-1];
 136         c = g_hash_table_lookup(client_map, &w);
 137         if (c) stacking_lower(c);
 138     }
 139     g_free(client_startup_stack_order);
 140     client_startup_stack_order = NULL;
 141     client_startup_stack_size = 0;
 142
 143     if (config_focus_new)
 144         focus_fallback(Fallback_NoFocus);
 145 }
 146
 147 void client_manage(Window window)
 148 {
 149     Client *self;
 150     XEvent e;
 151     XWindowAttributes attrib;
 152     XSetWindowAttributes attrib_set;
 153 /*    XWMHints *wmhint; */
 154     guint i;
 155
 156     grab_server(TRUE);
 157
 158     /* check if it has already been unmapped by the time we started mapping
 159        the grab does a sync so we don't have to here */
 160     if (XCheckTypedWindowEvent(ob_display, window, DestroyNotify, &e) ||
 161         XCheckTypedWindowEvent(ob_display, window, UnmapNotify, &e)) {
 162         XPutBackEvent(ob_display, &e);
 163
 164         grab_server(FALSE);
 165         return; /* don't manage it */
 166     }
 167
 168     /* make sure it isn't an override-redirect window */
 169     if (!XGetWindowAttributes(ob_display, window, &attrib) ||
 170         attrib.override_redirect) {
 171         grab_server(FALSE);
 172         return; /* don't manage it */
 173     }
 174
 175 /*    /\* is the window a docking app *\/
 176     if ((wmhint = XGetWMHints(ob_display, window))) {
 177         if ((wmhint->flags & StateHint) &&
 178             wmhint->initial_state == WithdrawnState) {
 179             /\* XXX: make dock apps work! *\/
 180             grab_server(FALSE);
 181             XFree(wmhint);
 182             return;
 183         }
 184         XFree(wmhint);
 185     }
 186 */
 187     g_message("Managing window: %lx", window);
 188
 189     /* choose the events we want to receive on the CLIENT window */
 190     attrib_set.event_mask = CLIENT_EVENTMASK;
 191     attrib_set.do_not_propagate_mask = CLIENT_NOPROPAGATEMASK;
 192     XChangeWindowAttributes(ob_display, window,
 193                             CWEventMask|CWDontPropagate, &attrib_set);
 194
 195
 196     /* create the Client struct, and populate it from the hints on the
 197        window */
 198     self = g_new(Client, 1);
 199     self->window = window;
 200     client_get_all(self);
 201
 202     /* remove the client's border (and adjust re gravity) */
 203     client_toggle_border(self, FALSE);
 204
 205     /* specify that if we exit, the window should not be destroyed and should
 206        be reparented back to root automatically */
 207     XChangeSaveSet(ob_display, window, SetModeInsert);
 208
 209     /* create the decoration frame for the client window */
 210     self->frame = frame_new();
 211
 212     frame_grab_client(self->frame, self);
 213
 214     client_apply_startup_state(self);
 215
 216     grab_server(FALSE);
 217
 218     client_list = g_list_append(client_list, self);
 219     stacking_list = g_list_append(stacking_list, self);
 220     g_assert(!g_hash_table_lookup(client_map, &self->window));
 221     g_hash_table_insert(client_map, &self->window, self);
 222
 223     /* update the focus lists */
 224     if (self->desktop == DESKTOP_ALL) {
 225         for (i = 0; i < screen_num_desktops; ++i)
 226             focus_order[i] = g_list_append(focus_order[i], self);
 227     } else {
 228         i = self->desktop;
 229         focus_order[i] = g_list_append(focus_order[i], self);
 230     }
 231
 232     stacking_raise(self);
 233
 234     screen_update_struts();
 235
 236     dispatch_client(Event_Client_New, self, 0, 0);
 237
 238     client_showhide(self);
 239
 240     dispatch_client(Event_Client_Mapped, self, 0, 0);
 241
 242     /* focus the new window? */
 243     if (ob_state != State_Starting && client_normal(self)) {
 244         if (config_focus_new)
 245             client_focus(self);
 246         else if (self->transient_for) {
 247             if (self->transient_for != TRAN_GROUP) {/* transient of a window */
 248                 if (focus_client == self->transient_for)
 249                     client_focus(self);
 250             } else { /* transient of a group */
 251                 GSList *it;
 252
 253                 for (it = self->group->members; it; it = it->next)
 254                     if (focus_client == it->data) {
 255                         client_focus(self);
 256                         break;
 257                     }
 258             }
 259         }
 260     }
 261
 262     /* update the list hints */
 263     client_set_list();
 264
 265     /* make sure the window is visible */
 266     client_move_onscreen(self);
 267
 268     g_message("Managed window 0x%lx", window);
 269 }
 270
 271 void client_unmanage_all()
 272 {
 273     while (client_list != NULL)
 274         client_unmanage(client_list->data);
 275 }
 276
 277 void client_unmanage(Client *self)
 278 {
 279     guint i;
 280     int j;
 281     GSList *it;
 282
 283     g_message("Unmanaging window: %lx", self->window);
 284
 285     dispatch_client(Event_Client_Destroy, self, 0, 0);
 286     g_assert(self != NULL);
 287
 288     /* remove the window from our save set */
 289     XChangeSaveSet(ob_display, self->window, SetModeDelete);
 290
 291     /* we dont want events no more */
 292     XSelectInput(ob_display, self->window, NoEventMask);
 293
 294     frame_hide(self->frame);
 295
 296     client_list = g_list_remove(client_list, self);
 297     stacking_list = g_list_remove(stacking_list, self);
 298     g_hash_table_remove(client_map, &self->window);
 299
 300     /* update the focus lists */
 301     if (self->desktop == DESKTOP_ALL) {
 302         for (i = 0; i < screen_num_desktops; ++i)
 303             focus_order[i] = g_list_remove(focus_order[i], self);
 304     } else {
 305         i = self->desktop;
 306         focus_order[i] = g_list_remove(focus_order[i], self);
 307     }
 308
 309     /* once the client is out of the list, update the struts to remove it's
 310        influence */
 311     screen_update_struts();
 312
 313     /* tell our parent(s) that we're gone */
 314     if (self->transient_for == TRAN_GROUP) { /* transient of group */
 315         GSList *it;
 316
 317         for (it = self->group->members; it; it = it->next)
 318             if (it->data != self)
 319                 ((Client*)it->data)->transients =
 320                     g_slist_remove(((Client*)it->data)->transients, self);
 321     } else if (self->transient_for) {        /* transient of window */
 322         self->transient_for->transients =
 323             g_slist_remove(self->transient_for->transients, self);
 324     }
 325
 326     /* tell our transients that we're gone */
 327     for (it = self->transients; it != NULL; it = it->next) {
 328         if (((Client*)it->data)->transient_for != TRAN_GROUP) {
 329             ((Client*)it->data)->transient_for = NULL;
 330             client_calc_layer(it->data);
 331         }
 332     }
 333
 334     if (focus_client == self)
 335         client_unfocus(self);
 336
 337     /* remove from its group */
 338     if (self->group) {
 339         group_remove(self->group, self);
 340         self->group = NULL;
 341     }
 342
 343     /* dispatch the unmapped event */
 344     dispatch_client(Event_Client_Unmapped, self, 0, 0);
 345     g_assert(self != NULL);
 346
 347     /* give the client its border back */
 348     client_toggle_border(self, TRUE);
 349
 350     /* reparent the window out of the frame, and free the frame */
 351     frame_release_client(self->frame, self);
 352     self->frame = NULL;
 353
 354     if (ob_state != State_Exiting) {
 355         /* these values should not be persisted across a window
 356            unmapping/mapping */
 357         prop_erase(self->window, prop_atoms.net_wm_desktop);
 358         prop_erase(self->window, prop_atoms.net_wm_state);
 359     } else {
 360         /* if we're left in an iconic state, the client wont be mapped. this is
 361            bad, since we will no longer be managing the window on restart */
 362         if (self->iconic)
 363             XMapWindow(ob_display, self->window);
 364     }
 365
 366     g_message("Unmanaged window 0x%lx", self->window);
 367
 368     /* free all data allocated in the client struct */
 369     g_slist_free(self->transients);
 370     for (j = 0; j < self->nicons; ++j)
 371         g_free(self->icons[j].data);
 372     if (self->nicons > 0)
 373         g_free(self->icons);
 374     g_free(self->title);
 375     g_free(self->icon_title);
 376     g_free(self->name);
 377     g_free(self->class);
 378     g_free(self->role);
 379     g_free(self);
 380
 381     /* update the list hints */
 382     client_set_list();
 383 }
 384
 385 static void client_move_onscreen(Client *self)
 386 {
 387     Rect *a;
 388     int x = self->frame->area.x, y = self->frame->area.y;
 389
 390     a = screen_area(self->desktop);
 391     if (x >= a->x + a->width - 1)
 392         x = a->x + a->width - self->frame->area.width;
 393     if (y >= a->y + a->height - 1)
 394         y = a->y + a->height - self->frame->area.height;
 395     if (x + self->frame->area.width - 1 < a->x)
 396         x = a->x;
 397     if (y + self->frame->area.height - 1< a->y)
 398         y = a->y;
 399
 400     frame_frame_gravity(self->frame, &x, &y); /* get where the client
 401                                               should be */
 402     client_configure(self , Corner_TopLeft, x, y,
 403                      self->area.width, self->area.height,
 404                      TRUE, TRUE);
 405 }
 406
 407 static void client_toggle_border(Client *self, gboolean show)
 408 {
 409     /* adjust our idea of where the client is, based on its border. When the
 410        border is removed, the client should now be considered to be in a
 411        different position.
 412        when re-adding the border to the client, the same operation needs to be
 413        reversed. */
 414     int oldx = self->area.x, oldy = self->area.y;
 415     int x = oldx, y = oldy;
 416     switch(self->gravity) {
 417     default:
 418     case NorthWestGravity:
 419     case WestGravity:
 420     case SouthWestGravity:
 421         break;
 422     case NorthEastGravity:
 423     case EastGravity:
 424     case SouthEastGravity:
 425         if (show) x -= self->border_width * 2;
 426         else      x += self->border_width * 2;
 427         break;
 428     case NorthGravity:
 429     case SouthGravity:
 430     case CenterGravity:
 431     case ForgetGravity:
 432     case StaticGravity:
 433         if (show) x -= self->border_width;
 434         else      x += self->border_width;
 435         break;
 436     }
 437     switch(self->gravity) {
 438     default:
 439     case NorthWestGravity:
 440     case NorthGravity:
 441     case NorthEastGravity:
 442         break;
 443     case SouthWestGravity:
 444     case SouthGravity:
 445     case SouthEastGravity:
 446         if (show) y -= self->border_width * 2;
 447         else      y += self->border_width * 2;
 448         break;
 449     case WestGravity:
 450     case EastGravity:
 451     case CenterGravity:
 452     case ForgetGravity:
 453     case StaticGravity:
 454         if (show) y -= self->border_width;
 455         else      y += self->border_width;
 456         break;
 457     }
 458     self->area.x = x;
 459     self->area.y = y;
 460
 461     if (show) {
 462         XSetWindowBorderWidth(ob_display, self->window, self->border_width);
 463
 464         /* move the client so it is back it the right spot _with_ its
 465            border! */
 466         if (x != oldx || y != oldy)
 467             XMoveWindow(ob_display, self->window, x, y);
 468     } else
 469         XSetWindowBorderWidth(ob_display, self->window, 0);
 470 }
 471
 472
 473 static void client_get_all(Client *self)
 474 {
 475     /* update EVERYTHING!! */
 476
 477     self->ignore_unmaps = 0;
 478
 479     /* defaults */
 480     self->frame = NULL;
 481     self->title = self->icon_title = NULL;
 482     self->name = self->class = self->role = NULL;
 483     self->wmstate = NormalState;
 484     self->transient = FALSE;
 485     self->transients = NULL;
 486     self->transient_for = NULL;
 487     self->layer = -1;
 488     self->urgent = FALSE;
 489     self->positioned = FALSE;
 490     self->disabled_decorations = 0;
 491     self->group = NULL;
 492     self->nicons = 0;
 493
 494     client_get_area(self);
 495     client_get_desktop(self);
 496     client_get_state(self);
 497     client_get_shaped(self);
 498
 499     client_update_transient_for(self);
 500     client_get_mwm_hints(self);
 501     client_get_type(self);/* this can change the mwmhints for special cases */
 502
 503     client_update_protocols(self);
 504
 505     client_get_gravity(self); /* get the attribute gravity */
 506     client_update_normal_hints(self); /* this may override the attribute
 507                                          gravity */
 508
 509     /* got the type, the mwmhints, the protocols, and the normal hints
 510        (min/max sizes), so we're ready to set up the decorations/functions */
 511     client_setup_decor_and_functions(self);
 512
 513     client_update_wmhints(self);
 514     client_update_title(self);
 515     client_update_icon_title(self);
 516     client_update_class(self);
 517     client_update_strut(self);
 518     client_update_icons(self);
 519     client_update_kwm_icon(self);
 520
 521     /* this makes sure that these windows appear on all desktops */
 522     if (self->type == Type_Desktop)
 523         self->desktop = DESKTOP_ALL;
 524
 525     /* set the desktop hint, to make sure that it always exists, and to
 526        reflect any changes we've made here */
 527     PROP_SET32(self->window, net_wm_desktop, cardinal, self->desktop);
 528
 529     client_change_state(self);
 530 }
 531
 532 static void client_get_area(Client *self)
 533 {
 534     XWindowAttributes wattrib;
 535     Status ret;
 536
 537     ret = XGetWindowAttributes(ob_display, self->window, &wattrib);
 538     g_assert(ret != BadWindow);
 539
 540     RECT_SET(self->area, wattrib.x, wattrib.y, wattrib.width, wattrib.height);
 541     self->border_width = wattrib.border_width;
 542 }
 543
 544 static void client_get_desktop(Client *self)
 545 {
 546     guint32 d;
 547
 548     if (PROP_GET32(self->window, net_wm_desktop, cardinal, &d)) {
 549         if (d >= screen_num_desktops && d != DESKTOP_ALL)
 550             d = screen_num_desktops - 1;
 551         self->desktop = d;
 552     } else {
 553         /* defaults to the current desktop */
 554         self->desktop = screen_desktop;
 555     }
 556 }
 557
 558 static void client_get_state(Client *self)
 559 {
 560     guint32 *state;
 561     guint num;
 562
 563     self->modal = self->shaded = self->max_horz = self->max_vert =
 564         self->fullscreen = self->above = self->below = self->iconic =
 565         self->skip_taskbar = self->skip_pager = FALSE;
 566
 567     if (PROP_GETA32(self->window, net_wm_state, atom, &state, &num)) {
 568         gulong i;
 569         for (i = 0; i < num; ++i) {
 570             if (state[i] == prop_atoms.net_wm_state_modal)
 571                 self->modal = TRUE;
 572             else if (state[i] == prop_atoms.net_wm_state_shaded)
 573                 self->shaded = TRUE;
 574             else if (state[i] == prop_atoms.net_wm_state_hidden)
 575                 self->iconic = TRUE;
 576             else if (state[i] == prop_atoms.net_wm_state_skip_taskbar)
 577                 self->skip_taskbar = TRUE;
 578             else if (state[i] == prop_atoms.net_wm_state_skip_pager)
 579                 self->skip_pager = TRUE;
 580             else if (state[i] == prop_atoms.net_wm_state_fullscreen)
 581                 self->fullscreen = TRUE;
 582             else if (state[i] == prop_atoms.net_wm_state_maximized_vert)
 583                 self->max_vert = TRUE;
 584             else if (state[i] == prop_atoms.net_wm_state_maximized_horz)
 585                 self->max_horz = TRUE;
 586             else if (state[i] == prop_atoms.net_wm_state_above)
 587                 self->above = TRUE;
 588             else if (state[i] == prop_atoms.net_wm_state_below)
 589                 self->below = TRUE;
 590         }
 591
 592         g_free(state);
 593     }
 594 }
 595
 596 static void client_get_shaped(Client *self)
 597 {
 598     self->shaped = FALSE;
 599 #ifdef   SHAPE
 600     if (extensions_shape) {
 601         int foo;
 602         guint ufoo;
 603         int s;
 604
 605         XShapeSelectInput(ob_display, self->window, ShapeNotifyMask);
 606
 607         XShapeQueryExtents(ob_display, self->window, &s, &foo,
 608                            &foo, &ufoo, &ufoo, &foo, &foo, &foo, &ufoo,
 609                            &ufoo);
 610         self->shaped = (s != 0);
 611     }
 612 #endif
 613 }
 614
 615 void client_update_transient_for(Client *self)
 616 {
 617     Window t = None;
 618     Client *c = NULL;
 619
 620     if (XGetTransientForHint(ob_display, self->window, &t) &&
 621         t != self->window) { /* cant be transient to itself! */
 622         self->transient = TRUE;
 623         c = g_hash_table_lookup(client_map, &t);
 624         g_assert(c != self);/* if this happens then we need to check for it*/
 625
 626         if (!c && self->group) {
 627             /* not transient to a client, see if it is transient for a
 628                group */
 629             if (t == self->group->leader ||
 630                 t == None ||
 631                 t == ob_root) {
 632                 /* window is a transient for its group! */
 633                 c = TRAN_GROUP;
 634             }
 635         }
 636     } else
 637         self->transient = FALSE;
 638
 639     /* if anything has changed... */
 640     if (c != self->transient_for) {
 641         if (self->transient_for == TRAN_GROUP) { /* transient of group */
 642             GSList *it;
 643
 644             /* remove from old parents */
 645             for (it = self->group->members; it; it = it->next)
 646                 if (it->data != self)
 647                     ((Client*)it->data)->transients =
 648                         g_slist_remove(((Client*)it->data)->transients, self);
 649         } else if (self->transient_for != NULL) { /* transient of window */
 650             /* remove from old parent */
 651             self->transient_for->transients =
 652                 g_slist_remove(self->transient_for->transients, self);
 653         }
 654         self->transient_for = c;
 655         if (self->transient_for == TRAN_GROUP) { /* transient of group */
 656             GSList *it;
 657
 658             /* add to new parents */
 659             for (it = self->group->members; it; it = it->next)
 660                 if (it->data != self)
 661                     ((Client*)it->data)->transients =
 662                         g_slist_append(((Client*)it->data)->transients, self);
 663         } else if (self->transient_for != NULL) { /* transient of window */
 664             /* add to new parent */
 665             self->transient_for->transients =
 666                 g_slist_append(self->transient_for->transients, self);
 667         }
 668     }
 669 }
 670
 671 static void client_get_mwm_hints(Client *self)
 672 {
 673     guint num;
 674     guint32 *hints;
 675
 676     self->mwmhints.flags = 0; /* default to none */
 677
 678     if (PROP_GETA32(self->window, motif_wm_hints, motif_wm_hints,
 679                     &hints, &num)) {
 680         if (num >= MWM_ELEMENTS) {
 681             self->mwmhints.flags = hints[0];
 682             self->mwmhints.functions = hints[1];
 683             self->mwmhints.decorations = hints[2];
 684         }
 685         g_free(hints);
 686     }
 687 }
 688
 689 void client_get_type(Client *self)
 690 {
 691     guint num, i;
 692     guint32 *val;
 693
 694     self->type = -1;
 695
 696     if (PROP_GETA32(self->window, net_wm_window_type, atom, &val, &num)) {
 697         /* use the first value that we know about in the array */
 698         for (i = 0; i < num; ++i) {
 699             if (val[i] == prop_atoms.net_wm_window_type_desktop)
 700                 self->type = Type_Desktop;
 701             else if (val[i] == prop_atoms.net_wm_window_type_dock)
 702                 self->type = Type_Dock;
 703             else if (val[i] == prop_atoms.net_wm_window_type_toolbar)
 704                 self->type = Type_Toolbar;
 705             else if (val[i] == prop_atoms.net_wm_window_type_menu)
 706                 self->type = Type_Menu;
 707             else if (val[i] == prop_atoms.net_wm_window_type_utility)
 708                 self->type = Type_Utility;
 709             else if (val[i] == prop_atoms.net_wm_window_type_splash)
 710                 self->type = Type_Splash;
 711             else if (val[i] == prop_atoms.net_wm_window_type_dialog)
 712                 self->type = Type_Dialog;
 713             else if (val[i] == prop_atoms.net_wm_window_type_normal)
 714                 self->type = Type_Normal;
 715             else if (val[i] == prop_atoms.kde_net_wm_window_type_override) {
 716                 /* prevent this window from getting any decor or
 717                    functionality */
 718                 self->mwmhints.flags &= (MwmFlag_Functions |
 719                                          MwmFlag_Decorations);
 720                 self->mwmhints.decorations = 0;
 721                 self->mwmhints.functions = 0;
 722             }
 723             if (self->type != (WindowType) -1)
 724                 break; /* grab the first legit type */
 725         }
 726         g_free(val);
 727     }
 728
 729     if (self->type == (WindowType) -1) {
 730         /*the window type hint was not set, which means we either classify
 731           ourself as a normal window or a dialog, depending on if we are a
 732           transient. */
 733         if (self->transient)
 734             self->type = Type_Dialog;
 735         else
 736             self->type = Type_Normal;
 737     }
 738 }
 739
 740 void client_update_protocols(Client *self)
 741 {
 742     guint32 *proto;
 743     guint num_return, i;
 744
 745     self->focus_notify = FALSE;
 746     self->delete_window = FALSE;
 747
 748     if (PROP_GETA32(self->window, wm_protocols, atom, &proto, &num_return)) {
 749         for (i = 0; i < num_return; ++i) {
 750             if (proto[i] == prop_atoms.wm_delete_window) {
 751                 /* this means we can request the window to close */
 752                 self->delete_window = TRUE;
 753             } else if (proto[i] == prop_atoms.wm_take_focus)
 754                 /* if this protocol is requested, then the window will be
 755                    notified whenever we want it to receive focus */
 756                 self->focus_notify = TRUE;
 757         }
 758         g_free(proto);
 759     }
 760 }
 761
 762 static void client_get_gravity(Client *self)
 763 {
 764     XWindowAttributes wattrib;
 765     Status ret;
 766
 767     ret = XGetWindowAttributes(ob_display, self->window, &wattrib);
 768     g_assert(ret != BadWindow);
 769     self->gravity = wattrib.win_gravity;
 770 }
 771
 772 void client_update_normal_hints(Client *self)
 773 {
 774     XSizeHints size;
 775     long ret;
 776     int oldgravity = self->gravity;
 777
 778     /* defaults */
 779     self->min_ratio = 0.0f;
 780     self->max_ratio = 0.0f;
 781     SIZE_SET(self->size_inc, 1, 1);
 782     SIZE_SET(self->base_size, 0, 0);
 783     SIZE_SET(self->min_size, 0, 0);
 784     SIZE_SET(self->max_size, G_MAXINT, G_MAXINT);
 785
 786     /* get the hints from the window */
 787     if (XGetWMNormalHints(ob_display, self->window, &size, &ret)) {
 788         self->positioned = !!(size.flags & (PPosition|USPosition));
 789
 790         if (size.flags & PWinGravity) {
 791             self->gravity = size.win_gravity;
 792
 793             /* if the client has a frame, i.e. has already been mapped and
 794                is changing its gravity */
 795             if (self->frame && self->gravity != oldgravity) {
 796                 /* move our idea of the client's position based on its new
 797                    gravity */
 798                 self->area.x = self->frame->area.x;
 799                 self->area.y = self->frame->area.y;
 800                 frame_frame_gravity(self->frame, &self->area.x, &self->area.y);
 801             }
 802         }
 803
 804         if (size.flags & PAspect) {
 805             if (size.min_aspect.y)
 806                 self->min_ratio = (float)size.min_aspect.x / size.min_aspect.y;
 807             if (size.max_aspect.y)
 808                 self->max_ratio = (float)size.max_aspect.x / size.max_aspect.y;
 809         }
 810
 811         if (size.flags & PMinSize)
 812             SIZE_SET(self->min_size, size.min_width, size.min_height);
 813
 814         if (size.flags & PMaxSize)
 815             SIZE_SET(self->max_size, size.max_width, size.max_height);
 816
 817         if (size.flags & PBaseSize)
 818             SIZE_SET(self->base_size, size.base_width, size.base_height);
 819
 820         if (size.flags & PResizeInc)
 821             SIZE_SET(self->size_inc, size.width_inc, size.height_inc);
 822     }
 823 }
 824
 825 void client_setup_decor_and_functions(Client *self)
 826 {
 827     /* start with everything (cept fullscreen) */
 828     self->decorations = Decor_Titlebar | Decor_Handle | Decor_Border |
 829         Decor_Icon | Decor_AllDesktops | Decor_Iconify | Decor_Maximize |
 830         Decor_Shade;
 831     self->functions = Func_Resize | Func_Move | Func_Iconify | Func_Maximize |
 832         Func_Shade;
 833     if (self->delete_window) {
 834         self->decorations |= Decor_Close;
 835         self->functions |= Func_Close;
 836     }
 837
 838     if (!(self->min_size.width < self->max_size.width ||
 839           self->min_size.height < self->max_size.height)) {
 840         self->decorations &= ~(Decor_Maximize | Decor_Handle);
 841         self->functions &= ~(Func_Resize | Func_Maximize);
 842     }
 843
 844     switch (self->type) {
 845     case Type_Normal:
 846         /* normal windows retain all of the possible decorations and
 847            functionality, and are the only windows that you can fullscreen */
 848         self->functions |= Func_Fullscreen;
 849         break;
 850
 851     case Type_Dialog:
 852     case Type_Utility:
 853         /* these windows cannot be maximized */
 854         self->decorations &= ~Decor_Maximize;
 855         self->functions &= ~Func_Maximize;
 856         break;
 857
 858     case Type_Menu:
 859     case Type_Toolbar:
 860         /* these windows get less functionality */
 861         self->decorations &= ~(Decor_Iconify | Decor_Handle);
 862         self->functions &= ~(Func_Iconify | Func_Resize);
 863         break;
 864
 865     case Type_Desktop:
 866     case Type_Dock:
 867     case Type_Splash:
 868         /* none of these windows are manipulated by the window manager */
 869         self->decorations = 0;
 870         self->functions = 0;
 871         break;
 872     }
 873
 874     /* Mwm Hints are applied subtractively to what has already been chosen for
 875        decor and functionality */
 876     if (self->mwmhints.flags & MwmFlag_Decorations) {
 877         if (! (self->mwmhints.decorations & MwmDecor_All)) {
 878             if (! (self->mwmhints.decorations & MwmDecor_Border))
 879                 self->decorations &= ~Decor_Border;
 880             if (! (self->mwmhints.decorations & MwmDecor_Handle))
 881                 self->decorations &= ~Decor_Handle;
 882             if (! (self->mwmhints.decorations & MwmDecor_Title))
 883                 self->decorations &= ~Decor_Titlebar;
 884             if (! (self->mwmhints.decorations & MwmDecor_Iconify))
 885                 self->decorations &= ~Decor_Iconify;
 886             if (! (self->mwmhints.decorations & MwmDecor_Maximize))
 887                 self->decorations &= ~Decor_Maximize;
 888         }
 889     }
 890
 891     if (self->mwmhints.flags & MwmFlag_Functions) {
 892         if (! (self->mwmhints.functions & MwmFunc_All)) {
 893             if (! (self->mwmhints.functions & MwmFunc_Resize))
 894                 self->functions &= ~Func_Resize;
 895             if (! (self->mwmhints.functions & MwmFunc_Move))
 896                 self->functions &= ~Func_Move;
 897             if (! (self->mwmhints.functions & MwmFunc_Iconify))
 898                 self->functions &= ~Func_Iconify;
 899             if (! (self->mwmhints.functions & MwmFunc_Maximize))
 900                 self->functions &= ~Func_Maximize;
 901             /* dont let mwm hints kill the close button
 902                if (! (self->mwmhints.functions & MwmFunc_Close))
 903                self->functions &= ~Func_Close; */
 904         }
 905     }
 906
 907     /* can't maximize without moving/resizing */
 908     if (!((self->functions & Func_Move) && (self->functions & Func_Resize)))
 909         self->functions &= ~(Func_Maximize | Func_Fullscreen);
 910
 911     /* finally, user specified disabled decorations are applied to subtract
 912        decorations */
 913     if (self->disabled_decorations & Decor_Titlebar)
 914         self->decorations &= ~Decor_Titlebar;
 915     if (self->disabled_decorations & Decor_Handle)
 916         self->decorations &= ~Decor_Handle;
 917     if (self->disabled_decorations & Decor_Border)
 918         self->decorations &= ~Decor_Border;
 919     if (self->disabled_decorations & Decor_Iconify)
 920         self->decorations &= ~Decor_Iconify;
 921     if (self->disabled_decorations & Decor_Maximize)
 922         self->decorations &= ~Decor_Maximize;
 923     if (self->disabled_decorations & Decor_AllDesktops)
 924         self->decorations &= ~Decor_AllDesktops;
 925     if (self->disabled_decorations & Decor_Shade)
 926         self->decorations &= ~Decor_Shade;
 927     if (self->disabled_decorations & Decor_Close)
 928         self->decorations &= ~Decor_Close;
 929
 930     /* if we don't have a titlebar, then we cannot shade! */
 931     if (!(self->decorations & Decor_Titlebar))
 932         self->functions &= ~Func_Shade;
 933
 934     /* now we need to check against rules for the client's current state */
 935     if (self->fullscreen) {
 936         self->functions &= (Func_Close | Func_Fullscreen | Func_Iconify);
 937         self->decorations = 0;
 938     }
 939
 940     client_change_allowed_actions(self);
 941
 942     if (self->frame) {
 943         /* change the decors on the frame, and with more/less decorations,
 944            we may also need to be repositioned */
 945         frame_adjust_area(self->frame, TRUE, TRUE);
 946         /* with new decor, the window's maximized size may change */
 947         client_remaximize(self);
 948     }
 949 }
 950
 951 static void client_change_allowed_actions(Client *self)
 952 {
 953     guint32 actions[9];
 954     int num = 0;
 955
 956     actions[num++] = prop_atoms.net_wm_action_change_desktop;
 957
 958     if (self->functions & Func_Shade)
 959         actions[num++] = prop_atoms.net_wm_action_shade;
 960     if (self->functions & Func_Close)
 961         actions[num++] = prop_atoms.net_wm_action_close;
 962     if (self->functions & Func_Move)
 963         actions[num++] = prop_atoms.net_wm_action_move;
 964     if (self->functions & Func_Iconify)
 965         actions[num++] = prop_atoms.net_wm_action_minimize;
 966     if (self->functions & Func_Resize)
 967         actions[num++] = prop_atoms.net_wm_action_resize;
 968     if (self->functions & Func_Fullscreen)
 969         actions[num++] = prop_atoms.net_wm_action_fullscreen;
 970     if (self->functions & Func_Maximize) {
 971         actions[num++] = prop_atoms.net_wm_action_maximize_horz;
 972         actions[num++] = prop_atoms.net_wm_action_maximize_vert;
 973     }
 974
 975     PROP_SETA32(self->window, net_wm_allowed_actions, atom, actions, num);
 976
 977     /* make sure the window isn't breaking any rules now */
 978
 979     if (!(self->functions & Func_Shade) && self->shaded) {
 980         if (self->frame) client_shade(self, FALSE);
 981         else self->shaded = FALSE;
 982     }
 983     if (!(self->functions & Func_Iconify) && self->iconic) {
 984         g_message("UNSETTING ICONIC");
 985         if (self->frame) client_iconify(self, FALSE, TRUE);
 986         else self->iconic = FALSE;
 987     }
 988     if (!(self->functions & Func_Fullscreen) && self->fullscreen) {
 989         if (self->frame) client_fullscreen(self, FALSE, TRUE);
 990         else self->fullscreen = FALSE;
 991     }
 992     if (!(self->functions & Func_Maximize) && (self->max_horz ||
 993                                                self->max_vert)) {
 994         if (self->frame) client_maximize(self, FALSE, 0, TRUE);
 995         else self->max_vert = self->max_horz = FALSE;
 996     }
 997 }
 998
 999 void client_remaximize(Client *self)
1000 {
1001     int dir;
1002     if (self->max_horz && self->max_vert)
1003         dir = 0;
1004     else if (self->max_horz)
1005         dir = 1;
1006     else if (self->max_vert)
1007         dir = 2;
1008     else
1009         return; /* not maximized */
1010     self->max_horz = self->max_vert = FALSE;
1011     client_maximize(self, TRUE, dir, FALSE);
1012 }
1013
1014 void client_update_wmhints(Client *self)
1015 {
1016     XWMHints *hints;
1017     gboolean ur = FALSE;
1018     GSList *it;
1019
1020     /* assume a window takes input if it doesnt specify */
1021     self->can_focus = TRUE;
1022
1023     if ((hints = XGetWMHints(ob_display, self->window)) != NULL) {
1024         if (hints->flags & InputHint)
1025             self->can_focus = hints->input;
1026
1027         /* only do this when first managing the window *AND* when we aren't
1028            starting up! */
1029         if (ob_state != State_Starting && self->frame == NULL)
1030             if (hints->flags & StateHint)
1031                 self->iconic = hints->initial_state == IconicState;
1032
1033         if (hints->flags & XUrgencyHint)
1034             ur = TRUE;
1035
1036         if (!(hints->flags & WindowGroupHint))
1037             hints->window_group = None; /* no group */
1038         /* did the group state change? */
1039         if (hints->window_group != (self->group ? self->group->leader : None)){
1040             /* remove from the old group if there was one */
1041             if (self->group != NULL) {
1042                 /* remove transients of the group */
1043                 for (it = self->group->members; it; it = it->next)
1044                     if (it->data != self &&
1045                         ((Client*)it->data)->transient_for == TRAN_GROUP) {
1046                         self->transients = g_slist_remove(self->transients,
1047                                                           it->data);
1048                     }
1049                 group_remove(self->group, self);
1050                 self->group = NULL;
1051             }
1052             if (hints->window_group != None) {
1053                 self->group = group_add(hints->window_group, self);
1054
1055                 /* add other transients of the group that are already set up */
1056                 for (it = self->group->members; it; it = it->next)
1057                     if (it->data != self &&
1058                         ((Client*)it->data)->transient_for == TRAN_GROUP)
1059                         self->transients = g_slist_append(self->transients,
1060                                                           it->data);
1061             }
1062
1063             /* because the self->transient flag wont change from this call,
1064                we don't need to update the window's type and such, only its
1065                transient_for, and the transients lists of other windows in the
1066                group may be affected */
1067             client_update_transient_for(self);
1068         }
1069
1070         if (hints->flags & IconPixmapHint) {
1071             client_update_kwm_icon(self);
1072             /* try get the kwm icon first, this is a fallback only */
1073             if (self->pixmap_icon == None) {
1074                 self->pixmap_icon = hints->icon_pixmap;
1075                 if (hints->flags & IconMaskHint)
1076                     self->pixmap_icon_mask = hints->icon_mask;
1077                 else
1078                     self->pixmap_icon_mask = None;
1079
1080                 if (self->frame)
1081                     frame_adjust_icon(self->frame);
1082             }
1083         }
1084
1085         XFree(hints);
1086     }
1087
1088     if (ur != self->urgent) {
1089         self->urgent = ur;
1090         g_message("Urgent Hint for 0x%lx: %s", self->window,
1091                   ur ? "ON" : "OFF");
1092         /* fire the urgent callback if we're mapped, otherwise, wait until
1093            after we're mapped */
1094         if (self->frame)
1095             dispatch_client(Event_Client_Urgent, self, self->urgent, 0);
1096     }
1097 }
1098
1099 void client_update_title(Client *self)
1100 {
1101     char *data = NULL;
1102
1103     g_free(self->title);
1104
1105     /* try netwm */
1106     if (!PROP_GETS(self->window, net_wm_name, utf8, &data))
1107         /* try old x stuff */
1108         if (!PROP_GETS(self->window, wm_name, locale, &data))
1109             data = g_strdup("Unnamed Window");
1110
1111     /* look for duplicates and append a number */
1112
1113     PROP_SETS(self->window, net_wm_visible_name, data);
1114
1115     self->title = data;
1116
1117     if (self->frame)
1118         frame_adjust_title(self->frame);
1119 }
1120
1121 void client_update_icon_title(Client *self)
1122 {
1123     char *data = NULL;
1124
1125     g_free(self->icon_title);
1126
1127     /* try netwm */
1128     if (!PROP_GETS(self->window, net_wm_icon_name, utf8, &data))
1129         /* try old x stuff */
1130         if (!PROP_GETS(self->window, wm_icon_name, locale, &data))
1131             data = g_strdup("Unnamed Window");
1132
1133     PROP_SETS(self->window, net_wm_visible_icon_name, data);
1134
1135     self->icon_title = data;
1136 }
1137
1138 void client_update_class(Client *self)
1139 {
1140     char **data;
1141     char *s;
1142
1143     if (self->name) g_free(self->name);
1144     if (self->class) g_free(self->class);
1145     if (self->role) g_free(self->role);
1146
1147     self->name = self->class = self->role = NULL;
1148
1149     if (PROP_GETSS(self->window, wm_class, locale, &data)) {
1150         if (data[0]) {
1151             self->name = g_strdup(data[0]);
1152             if (data[1])
1153                 self->class = g_strdup(data[1]);
1154         }
1155         g_strfreev(data);
1156     }
1157
1158     if (PROP_GETS(self->window, wm_window_role, locale, &s))
1159         self->role = g_strdup(s);
1160
1161     if (self->name == NULL) self->name = g_strdup("");
1162     if (self->class == NULL) self->class = g_strdup("");
1163     if (self->role == NULL) self->role = g_strdup("");
1164 }
1165
1166 void client_update_strut(Client *self)
1167 {
1168     guint num;
1169     guint32 *data;
1170
1171     if (!PROP_GETA32(self->window, net_wm_strut, cardinal, &data, &num)) {
1172         STRUT_SET(self->strut, 0, 0, 0, 0);
1173     } else {
1174         if (num == 4)
1175             STRUT_SET(self->strut, data[0], data[2], data[1], data[3]);
1176         else
1177             STRUT_SET(self->strut, 0, 0, 0, 0);
1178         g_free(data);
1179     }
1180
1181     /* updating here is pointless while we're being mapped cuz we're not in
1182        the client list yet */
1183     if (self->frame)
1184         screen_update_struts();
1185 }
1186
1187 void client_update_icons(Client *self)
1188 {
1189     guint num;
1190     guint32 *data;
1191     guint w, h, i;
1192     int j;
1193
1194     for (j = 0; j < self->nicons; ++j)
1195         g_free(self->icons[j].data);
1196     if (self->nicons > 0)
1197         g_free(self->icons);
1198     self->nicons = 0;
1199
1200     if (PROP_GETA32(self->window, net_wm_icon, cardinal, &data, &num)) {
1201         /* figure out how many valid icons are in here */
1202         i = 0;
1203         while (num - i > 2) {
1204             w = data[i++];
1205             h = data[i++];
1206             i += w * h;
1207             if (i > num) break;
1208             ++self->nicons;
1209         }
1210
1211         self->icons = g_new(Icon, self->nicons);
1212
1213         /* store the icons */
1214         i = 0;
1215         for (j = 0; j < self->nicons; ++j) {
1216             w = self->icons[j].width = data[i++];
1217             h = self->icons[j].height = data[i++];
1218             self->icons[j].data =
1219                 g_memdup(&data[i], w * h * sizeof(gulong));
1220             i += w * h;
1221             g_assert(i <= num);
1222         }
1223
1224         g_free(data);
1225     }
1226
1227     if (self->frame)
1228         frame_adjust_icon(self->frame);
1229 }
1230
1231 void client_update_kwm_icon(Client *self)
1232 {
1233     guint num;
1234     guint32 *data;
1235
1236     if (!PROP_GETA32(self->window, kwm_win_icon, kwm_win_icon, &data, &num)) {
1237         self->pixmap_icon = self->pixmap_icon_mask = None;
1238     } else {
1239         if (num == 2) {
1240             self->pixmap_icon = data[0];
1241             self->pixmap_icon_mask = data[1];
1242         } else
1243             self->pixmap_icon = self->pixmap_icon_mask = None;
1244         g_free(data);
1245     }
1246     if (self->frame)
1247         frame_adjust_icon(self->frame);
1248 }
1249
1250 static void client_change_state(Client *self)
1251 {
1252     guint32 state[2];
1253     guint32 netstate[10];
1254     guint num;
1255
1256     state[0] = self->wmstate;
1257     state[1] = None;
1258     PROP_SETA32(self->window, wm_state, wm_state, state, 2);
1259
1260     num = 0;
1261     if (self->modal)
1262         netstate[num++] = prop_atoms.net_wm_state_modal;
1263     if (self->shaded)
1264         netstate[num++] = prop_atoms.net_wm_state_shaded;
1265     if (self->iconic)
1266         netstate[num++] = prop_atoms.net_wm_state_hidden;
1267     if (self->skip_taskbar)
1268         netstate[num++] = prop_atoms.net_wm_state_skip_taskbar;
1269     if (self->skip_pager)
1270         netstate[num++] = prop_atoms.net_wm_state_skip_pager;
1271     if (self->fullscreen)
1272         netstate[num++] = prop_atoms.net_wm_state_fullscreen;
1273     if (self->max_vert)
1274         netstate[num++] = prop_atoms.net_wm_state_maximized_vert;
1275     if (self->max_horz)
1276         netstate[num++] = prop_atoms.net_wm_state_maximized_horz;
1277     if (self->above)
1278         netstate[num++] = prop_atoms.net_wm_state_above;
1279     if (self->below)
1280         netstate[num++] = prop_atoms.net_wm_state_below;
1281     PROP_SETA32(self->window, net_wm_state, atom, netstate, num);
1282
1283     client_calc_layer(self);
1284
1285     if (self->frame)
1286         frame_adjust_state(self->frame);
1287 }
1288
1289 static Client *search_focus_tree(Client *node, Client *skip)
1290 {
1291     GSList *it;
1292     Client *ret;
1293
1294     for (it = node->transients; it != NULL; it = it->next) {
1295         Client *c = it->data;
1296         if (c == skip) continue; /* circular? */
1297         if ((ret = search_focus_tree(c, skip))) return ret;
1298         if (client_focused(c)) return c;
1299     }
1300     return NULL;
1301 }
1302
1303 static void calc_recursive(Client *self, StackLayer l, gboolean raised)
1304 {
1305     StackLayer old;
1306     GSList *it;
1307
1308     old = self->layer;
1309     self->layer = l;
1310
1311     for (it = self->transients; it; it = it->next)
1312         calc_recursive(it->data, l, raised ? raised : l != old);
1313
1314     if (!raised && l != old)
1315         if (self->frame)
1316             stacking_raise(self);
1317 }
1318
1319 void client_calc_layer(Client *self)
1320 {
1321     StackLayer l;
1322     gboolean f;
1323
1324     /* transients take on the layer of their parents */
1325     if (self->transient_for) {
1326         if (self->transient_for != TRAN_GROUP) {
1327             self = self->transient_for;
1328         } else {
1329             GSList *it;
1330
1331             for (it = self->group->members; it; it = it->next)
1332                 if (it->data != self &&
1333                     ((Client*)it->data)->transient_for != TRAN_GROUP) {
1334                     self = it->data;
1335                     break;
1336                 }
1337         }
1338     }
1339
1340     /* is us or one of our transients focused? */
1341     if (client_focused(self))
1342         f = TRUE;
1343     else if (search_focus_tree(self, self))
1344         f = TRUE;
1345     else
1346         f = FALSE;
1347
1348     if (self->iconic) l = Layer_Icon;
1349     /* fullscreen windows are only in the fullscreen layer while focused */
1350     else if (self->fullscreen && f) l = Layer_Fullscreen;
1351     else if (self->type == Type_Desktop) l = Layer_Desktop;
1352     else if (self->type == Type_Dock) {
1353         if (!self->below) l = Layer_Top;
1354         else l = Layer_Normal;
1355     }
1356     else if (self->above) l = Layer_Above;
1357     else if (self->below) l = Layer_Below;
1358     else l = Layer_Normal;
1359
1360     calc_recursive(self, l, FALSE);
1361 }
1362
1363 gboolean client_should_show(Client *self)
1364 {
1365     if (self->iconic) return FALSE;
1366     else if (!(self->desktop == screen_desktop ||
1367                self->desktop == DESKTOP_ALL)) return FALSE;
1368     else if (client_normal(self) && screen_showing_desktop) return FALSE;
1369
1370     return TRUE;
1371 }
1372
1373 static void client_showhide(Client *self)
1374 {
1375
1376     if (client_should_show(self))
1377         frame_show(self->frame);
1378     else
1379         frame_hide(self->frame);
1380 }
1381
1382 gboolean client_normal(Client *self) {
1383     return ! (self->type == Type_Desktop || self->type == Type_Dock ||
1384               self->type == Type_Splash);
1385 }
1386
1387 static void client_apply_startup_state(Client *self)
1388 {
1389     /* these are in a carefully crafted order.. */
1390
1391     if (self->iconic) {
1392         self->iconic = FALSE;
1393         client_iconify(self, TRUE, FALSE);
1394     }
1395     if (self->fullscreen) {
1396         self->fullscreen = FALSE;
1397         client_fullscreen(self, TRUE, FALSE);
1398     }
1399     if (self->shaded) {
1400         self->shaded = FALSE;
1401         client_shade(self, TRUE);
1402     }
1403     if (self->urgent)
1404         dispatch_client(Event_Client_Urgent, self, self->urgent, 0);
1405
1406     if (self->max_vert && self->max_horz) {
1407         self->max_vert = self->max_horz = FALSE;
1408         client_maximize(self, TRUE, 0, FALSE);
1409     } else if (self->max_vert) {
1410         self->max_vert = FALSE;
1411         client_maximize(self, TRUE, 2, FALSE);
1412     } else if (self->max_horz) {
1413         self->max_horz = FALSE;
1414         client_maximize(self, TRUE, 1, FALSE);
1415     }
1416
1417     /* nothing to do for the other states:
1418        skip_taskbar
1419        skip_pager
1420        modal
1421        above
1422        below
1423     */
1424 }
1425
1426 void client_configure(Client *self, Corner anchor, int x, int y, int w, int h,
1427                       gboolean user, gboolean final)
1428 {
1429     gboolean moved = FALSE, resized = FALSE;
1430
1431     /* gets the frame's position */
1432     frame_client_gravity(self->frame, &x, &y);
1433
1434     /* these positions are frame positions, not client positions */
1435
1436     /* set the size and position if fullscreen */
1437     if (self->fullscreen) {
1438         x = 0;
1439         y = 0;
1440         w = screen_physical_size.width;
1441         h = screen_physical_size.height;
1442         user = FALSE; /* ignore that increment etc shit when in fullscreen */
1443     } else {
1444         /* set the size and position if maximized */
1445         if (self->max_horz) {
1446             x = screen_area(self->desktop)->x - self->frame->size.left;
1447             w = screen_area(self->desktop)->width;
1448         }
1449         if (self->max_vert) {
1450             y = screen_area(self->desktop)->y;
1451             h = screen_area(self->desktop)->height -
1452                 self->frame->size.top - self->frame->size.bottom;
1453         }
1454     }
1455
1456     /* gets the client's position */
1457     frame_frame_gravity(self->frame, &x, &y);
1458
1459     /* these override the above states! if you cant move you can't move! */
1460     if (user) {
1461         if (!(self->functions & Func_Move)) {
1462             x = self->area.x;
1463             y = self->area.y;
1464         }
1465         if (!(self->functions & Func_Resize)) {
1466             w = self->area.width;
1467             h = self->area.height;
1468         }
1469     }
1470
1471     if (!(w == self->area.width && h == self->area.height)) {
1472         w -= self->base_size.width;
1473         h -= self->base_size.height;
1474
1475         if (user) {
1476             /* for interactive resizing. have to move half an increment in each
1477                direction. */
1478
1479             /* how far we are towards the next size inc */
1480             int mw = w % self->size_inc.width;
1481             int mh = h % self->size_inc.height;
1482             /* amount to add */
1483             int aw = self->size_inc.width / 2;
1484             int ah = self->size_inc.height / 2;
1485             /* don't let us move into a new size increment */
1486             if (mw + aw >= self->size_inc.width)
1487                 aw = self->size_inc.width - mw - 1;
1488             if (mh + ah >= self->size_inc.height)
1489                 ah = self->size_inc.height - mh - 1;
1490             w += aw;
1491             h += ah;
1492
1493             /* if this is a user-requested resize, then check against min/max
1494                sizes and aspect ratios */
1495
1496             /* smaller than min size or bigger than max size? */
1497             if (w > self->max_size.width) w = self->max_size.width;
1498             if (w < self->min_size.width) w = self->min_size.width;
1499             if (h > self->max_size.height) h = self->max_size.height;
1500             if (h < self->min_size.height) h = self->min_size.height;
1501
1502             /* adjust the height ot match the width for the aspect ratios */
1503             if (self->min_ratio)
1504                 if (h * self->min_ratio > w) h = (int)(w / self->min_ratio);
1505             if (self->max_ratio)
1506                 if (h * self->max_ratio < w) h = (int)(w / self->max_ratio);
1507         }
1508
1509         /* keep to the increments */
1510         w /= self->size_inc.width;
1511         h /= self->size_inc.height;
1512
1513         /* you cannot resize to nothing */
1514         if (w < 1) w = 1;
1515         if (h < 1) h = 1;
1516
1517         /* store the logical size */
1518         SIZE_SET(self->logical_size, w, h);
1519
1520         w *= self->size_inc.width;
1521         h *= self->size_inc.height;
1522
1523         w += self->base_size.width;
1524         h += self->base_size.height;
1525     }
1526
1527     switch (anchor) {
1528     case Corner_TopLeft:
1529         break;
1530     case Corner_TopRight:
1531         x -= w - self->area.width;
1532         break;
1533     case Corner_BottomLeft:
1534         y -= h - self->area.height;
1535         break;
1536     case Corner_BottomRight:
1537         x -= w - self->area.width;
1538         y -= h - self->area.height;
1539         break;
1540     }
1541
1542     moved = x != self->area.x || y != self->area.y;
1543     resized = w != self->area.width || h != self->area.height;
1544
1545     RECT_SET(self->area, x, y, w, h);
1546
1547     if (resized)
1548         XResizeWindow(ob_display, self->window, w, h);
1549
1550     /* move/resize the frame to match the request */
1551     if (self->frame) {
1552         if (moved || resized)
1553             frame_adjust_area(self->frame, moved, resized);
1554
1555         if (!user || final) {
1556             XEvent event;
1557             event.type = ConfigureNotify;
1558             event.xconfigure.display = ob_display;
1559             event.xconfigure.event = self->window;
1560             event.xconfigure.window = self->window;
1561
1562             /* root window coords with border in mind */
1563             event.xconfigure.x = x - self->border_width +
1564                 self->frame->size.left;
1565             event.xconfigure.y = y - self->border_width +
1566                 self->frame->size.top;
1567
1568             event.xconfigure.width = self->area.width;
1569             event.xconfigure.height = self->area.height;
1570             event.xconfigure.border_width = self->border_width;
1571             event.xconfigure.above = self->frame->plate;
1572             event.xconfigure.override_redirect = FALSE;
1573             XSendEvent(event.xconfigure.display, event.xconfigure.window,
1574                        FALSE, StructureNotifyMask, &event);
1575         }
1576     }
1577 }
1578
1579 void client_fullscreen(Client *self, gboolean fs, gboolean savearea)
1580 {
1581     int x, y, w, h;
1582
1583     if (!(self->functions & Func_Fullscreen) || /* can't */
1584         self->fullscreen == fs) return;         /* already done */
1585
1586     self->fullscreen = fs;
1587     client_change_state(self); /* change the state hints on the client,
1588                                   and adjust out layer/stacking */
1589
1590     if (fs) {
1591         if (savearea) {
1592             guint32 dimensions[4];
1593             dimensions[0] = self->area.x;
1594             dimensions[1] = self->area.y;
1595             dimensions[2] = self->area.width;
1596             dimensions[3] = self->area.height;
1597
1598             PROP_SETA32(self->window, openbox_premax, cardinal,
1599                         dimensions, 4);
1600         }
1601
1602         /* these are not actually used cuz client_configure will set them
1603            as appropriate when the window is fullscreened */
1604         x = y = w = h = 0;
1605     } else {
1606         guint num;
1607         gint32 *dimensions;
1608
1609         /* pick some fallbacks... */
1610         x = screen_area(self->desktop)->x +
1611             screen_area(self->desktop)->width / 4;
1612         y = screen_area(self->desktop)->y +
1613             screen_area(self->desktop)->height / 4;
1614         w = screen_area(self->desktop)->width / 2;
1615         h = screen_area(self->desktop)->height / 2;
1616
1617         if (PROP_GETA32(self->window, openbox_premax, cardinal,
1618                         (guint32**)&dimensions, &num)) {
1619             if (num == 4) {
1620                 x = dimensions[0];
1621                 y = dimensions[1];
1622                 w = dimensions[2];
1623                 h = dimensions[3];
1624             }
1625             g_free(dimensions);
1626         }
1627     }
1628
1629     client_setup_decor_and_functions(self);
1630
1631     client_configure(self, Corner_TopLeft, x, y, w, h, TRUE, TRUE);
1632
1633     /* try focus us when we go into fullscreen mode */
1634     client_focus(self);
1635 }
1636
1637 void client_iconify(Client *self, gboolean iconic, gboolean curdesk)
1638 {
1639     GSList *it;
1640
1641     /* move up the transient chain as far as possible first if deiconifying */
1642     if (!iconic)
1643         while (self->transient_for) {
1644             if (self->transient_for != TRAN_GROUP) {
1645                 if (self->transient_for->iconic == iconic)
1646                     break;
1647                 self = self->transient_for;
1648             } else {
1649                 GSList *it;
1650
1651                 /* the check for TRAN_GROUP is to prevent an infinate loop with
1652                    2 transients of the same group at the head of the group's
1653                    members list */
1654                 for (it = self->group->members; it; it = it->next) {
1655                     Client *c = it->data;
1656
1657                     if (c != self && c->transient_for->iconic != iconic &&
1658                         c->transient_for != TRAN_GROUP) {
1659                         self = it->data;
1660                         break;
1661                     }
1662                 }
1663                 if (it == NULL) break;
1664             }
1665         }
1666
1667     if (self->iconic == iconic) return; /* nothing to do */
1668
1669     g_message("%sconifying window: 0x%lx", (iconic ? "I" : "Uni"),
1670               self->window);
1671
1672     self->iconic = iconic;
1673
1674     if (iconic) {
1675         self->wmstate = IconicState;
1676         self->ignore_unmaps++;
1677         /* we unmap the client itself so that we can get MapRequest events,
1678            and because the ICCCM tells us to! */
1679         XUnmapWindow(ob_display, self->window);
1680     } else {
1681         if (curdesk)
1682             client_set_desktop(self, screen_desktop, FALSE);
1683         self->wmstate = self->shaded ? IconicState : NormalState;
1684         XMapWindow(ob_display, self->window);
1685     }
1686     client_change_state(self);
1687     client_showhide(self);
1688     screen_update_struts();
1689
1690     dispatch_client(iconic ? Event_Client_Unmapped : Event_Client_Mapped,
1691                     self, 0, 0);
1692
1693     /* iconify all transients */
1694     for (it = self->transients; it != NULL; it = it->next)
1695         if (it->data != self) client_iconify(it->data, iconic, curdesk);
1696 }
1697
1698 void client_maximize(Client *self, gboolean max, int dir, gboolean savearea)
1699 {
1700     int x, y, w, h;
1701
1702     g_assert(dir == 0 || dir == 1 || dir == 2);
1703     if (!(self->functions & Func_Maximize)) return; /* can't */
1704
1705     /* check if already done */
1706     if (max) {
1707         if (dir == 0 && self->max_horz && self->max_vert) return;
1708         if (dir == 1 && self->max_horz) return;
1709         if (dir == 2 && self->max_vert) return;
1710     } else {
1711         if (dir == 0 && !self->max_horz && !self->max_vert) return;
1712         if (dir == 1 && !self->max_horz) return;
1713         if (dir == 2 && !self->max_vert) return;
1714     }
1715
1716     /* work with the frame's coords */
1717     x = self->frame->area.x;
1718     y = self->frame->area.y;
1719     w = self->area.width;
1720     h = self->area.height;
1721
1722     if (max) {
1723         if (savearea) {
1724             gint32 dimensions[4];
1725             gint32 *readdim;
1726             guint num;
1727
1728             dimensions[0] = x;
1729             dimensions[1] = y;
1730             dimensions[2] = w;
1731             dimensions[3] = h;
1732
1733             /* get the property off the window and use it for the dimensions
1734                we are already maxed on */
1735             if (PROP_GETA32(self->window, openbox_premax, cardinal,
1736                             (guint32**)&readdim, &num)) {
1737                 if (num == 4) {
1738                     if (self->max_horz) {
1739                         dimensions[0] = readdim[0];
1740                         dimensions[2] = readdim[2];
1741                     }
1742                     if (self->max_vert) {
1743                         dimensions[1] = readdim[1];
1744                         dimensions[3] = readdim[3];
1745                     }
1746                 }
1747                 g_free(readdim);
1748             }
1749
1750             PROP_SETA32(self->window, openbox_premax, cardinal,
1751                         (guint32*)dimensions, 4);
1752         }
1753     } else {
1754         guint num;
1755         gint32 *dimensions;
1756
1757         /* pick some fallbacks... */
1758         if (dir == 0 || dir == 1) { /* horz */
1759             x = screen_area(self->desktop)->x +
1760                 screen_area(self->desktop)->width / 4;
1761             w = screen_area(self->desktop)->width / 2;
1762         }
1763         if (dir == 0 || dir == 2) { /* vert */
1764             y = screen_area(self->desktop)->y +
1765                 screen_area(self->desktop)->height / 4;
1766             h = screen_area(self->desktop)->height / 2;
1767         }
1768
1769         if (PROP_GETA32(self->window, openbox_premax, cardinal,
1770                         (guint32**)&dimensions, &num)) {
1771             if (num == 4) {
1772                 if (dir == 0 || dir == 1) { /* horz */
1773                     x = dimensions[0];
1774                     w = dimensions[2];
1775                 }
1776                 if (dir == 0 || dir == 2) { /* vert */
1777                     y = dimensions[1];
1778                     h = dimensions[3];
1779                 }
1780             }
1781             g_free(dimensions);
1782         }
1783     }
1784
1785     if (dir == 0 || dir == 1) /* horz */
1786         self->max_horz = max;
1787     if (dir == 0 || dir == 2) /* vert */
1788         self->max_vert = max;
1789
1790     if (!self->max_horz && !self->max_vert)
1791         PROP_ERASE(self->window, openbox_premax);
1792
1793     client_change_state(self); /* change the state hints on the client */
1794
1795     /* figure out where the client should be going */
1796     frame_frame_gravity(self->frame, &x, &y);
1797     client_configure(self, Corner_TopLeft, x, y, w, h, TRUE, TRUE);
1798 }
1799
1800 void client_shade(Client *self, gboolean shade)
1801 {
1802     if ((!(self->functions & Func_Shade) && shade) || /* can't shade */
1803         self->shaded == shade) return;     /* already done */
1804
1805     /* when we're iconic, don't change the wmstate */
1806     if (!self->iconic)
1807         self->wmstate = shade ? IconicState : NormalState;
1808     self->shaded = shade;
1809     client_change_state(self);
1810     /* resize the frame to just the titlebar */
1811     frame_adjust_area(self->frame, FALSE, FALSE);
1812 }
1813
1814 void client_close(Client *self)
1815 {
1816     XEvent ce;
1817
1818     if (!(self->functions & Func_Close)) return;
1819
1820     /*
1821       XXX: itd be cool to do timeouts and shit here for killing the client's
1822       process off
1823       like... if the window is around after 5 seconds, then the close button
1824       turns a nice red, and if this function is called again, the client is
1825       explicitly killed.
1826     */
1827
1828     ce.xclient.type = ClientMessage;
1829     ce.xclient.message_type =  prop_atoms.wm_protocols;
1830     ce.xclient.display = ob_display;
1831     ce.xclient.window = self->window;
1832     ce.xclient.format = 32;
1833     ce.xclient.data.l[0] = prop_atoms.wm_delete_window;
1834     ce.xclient.data.l[1] = event_lasttime;
1835     ce.xclient.data.l[2] = 0l;
1836     ce.xclient.data.l[3] = 0l;
1837     ce.xclient.data.l[4] = 0l;
1838     XSendEvent(ob_display, self->window, FALSE, NoEventMask, &ce);
1839 }
1840
1841 void client_kill(Client *self)
1842 {
1843     XKillClient(ob_display, self->window);
1844 }
1845
1846 void client_set_desktop(Client *self, guint target, gboolean donthide)
1847 {
1848     guint old, i;
1849
1850     if (target == self->desktop) return;
1851
1852     g_message("Setting desktop %u", target);
1853
1854     g_assert(target < screen_num_desktops || target == DESKTOP_ALL);
1855
1856     old = self->desktop;
1857     self->desktop = target;
1858     PROP_SET32(self->window, net_wm_desktop, cardinal, target);
1859     /* the frame can display the current desktop state */
1860     frame_adjust_state(self->frame);
1861     /* 'move' the window to the new desktop */
1862     if (!donthide)
1863         client_showhide(self);
1864     /* raise if it was not already on the desktop */
1865     if (old != DESKTOP_ALL)
1866         stacking_raise(self);
1867     screen_update_struts();
1868
1869     /* update the focus lists */
1870     if (old == DESKTOP_ALL) {
1871         for (i = 0; i < screen_num_desktops; ++i)
1872             focus_order[i] = g_list_remove(focus_order[i], self);
1873     } else
1874         focus_order[old] = g_list_remove(focus_order[old], self);
1875     if (target == DESKTOP_ALL) {
1876         for (i = 0; i < screen_num_desktops; ++i) {
1877             if (config_focus_new)
1878                 focus_order[i] = g_list_prepend(focus_order[i], self);
1879             else
1880                 focus_order[i] = g_list_append(focus_order[i], self);
1881         }
1882     } else {
1883         if (config_focus_new)
1884             focus_order[target] = g_list_prepend(focus_order[target], self);
1885         else
1886             focus_order[target] = g_list_append(focus_order[target], self);
1887     }
1888
1889     dispatch_client(Event_Client_Desktop, self, target, old);
1890 }
1891
1892 static Client *search_modal_tree(Client *node, Client *skip)
1893 {
1894     GSList *it;
1895     Client *ret;
1896
1897     for (it = node->transients; it != NULL; it = it->next) {
1898         Client *c = it->data;
1899         if (c == skip) continue; /* circular? */
1900         if ((ret = search_modal_tree(c, skip))) return ret;
1901         if (c->modal) return c;
1902     }
1903     return NULL;
1904 }
1905
1906 Client *client_find_modal_child(Client *self)
1907 {
1908     return search_modal_tree(self, self);
1909 }
1910
1911 gboolean client_validate(Client *self)
1912 {
1913     XEvent e;
1914
1915     XSync(ob_display, FALSE); /* get all events on the server */
1916
1917     if (XCheckTypedWindowEvent(ob_display, self->window, DestroyNotify, &e) ||
1918         XCheckTypedWindowEvent(ob_display, self->window, UnmapNotify, &e)) {
1919         XPutBackEvent(ob_display, &e);
1920         return FALSE;
1921     }
1922
1923     return TRUE;
1924 }
1925
1926 void client_set_wm_state(Client *self, long state)
1927 {
1928     if (state == self->wmstate) return; /* no change */
1929
1930     switch (state) {
1931     case IconicState:
1932         client_iconify(self, TRUE, TRUE);
1933         break;
1934     case NormalState:
1935         client_iconify(self, FALSE, TRUE);
1936         break;
1937     }
1938 }
1939
1940 void client_set_state(Client *self, Atom action, long data1, long data2)
1941 {
1942     gboolean shaded = self->shaded;
1943     gboolean fullscreen = self->fullscreen;
1944     gboolean max_horz = self->max_horz;
1945     gboolean max_vert = self->max_vert;
1946     int i;
1947
1948     if (!(action == prop_atoms.net_wm_state_add ||
1949           action == prop_atoms.net_wm_state_remove ||
1950           action == prop_atoms.net_wm_state_toggle))
1951         /* an invalid action was passed to the client message, ignore it */
1952         return;
1953
1954     for (i = 0; i < 2; ++i) {
1955         Atom state = i == 0 ? data1 : data2;
1956
1957         if (!state) continue;
1958
1959         /* if toggling, then pick whether we're adding or removing */
1960         if (action == prop_atoms.net_wm_state_toggle) {
1961             if (state == prop_atoms.net_wm_state_modal)
1962                 action = self->modal ? prop_atoms.net_wm_state_remove :
1963                     prop_atoms.net_wm_state_add;
1964             else if (state == prop_atoms.net_wm_state_maximized_vert)
1965                 action = self->max_vert ? prop_atoms.net_wm_state_remove :
1966                     prop_atoms.net_wm_state_add;
1967             else if (state == prop_atoms.net_wm_state_maximized_horz)
1968                 action = self->max_horz ? prop_atoms.net_wm_state_remove :
1969                     prop_atoms.net_wm_state_add;
1970             else if (state == prop_atoms.net_wm_state_shaded)
1971                 action = self->shaded ? prop_atoms.net_wm_state_remove :
1972                     prop_atoms.net_wm_state_add;
1973             else if (state == prop_atoms.net_wm_state_skip_taskbar)
1974                 action = self->skip_taskbar ?
1975                     prop_atoms.net_wm_state_remove :
1976                     prop_atoms.net_wm_state_add;
1977             else if (state == prop_atoms.net_wm_state_skip_pager)
1978                 action = self->skip_pager ?
1979                     prop_atoms.net_wm_state_remove :
1980                     prop_atoms.net_wm_state_add;
1981             else if (state == prop_atoms.net_wm_state_fullscreen)
1982                 action = self->fullscreen ?
1983                     prop_atoms.net_wm_state_remove :
1984                     prop_atoms.net_wm_state_add;
1985             else if (state == prop_atoms.net_wm_state_above)
1986                 action = self->above ? prop_atoms.net_wm_state_remove :
1987                     prop_atoms.net_wm_state_add;
1988             else if (state == prop_atoms.net_wm_state_below)
1989                 action = self->below ? prop_atoms.net_wm_state_remove :
1990                     prop_atoms.net_wm_state_add;
1991         }
1992
1993         if (action == prop_atoms.net_wm_state_add) {
1994             if (state == prop_atoms.net_wm_state_modal) {
1995                 /* XXX raise here or something? */
1996                 self->modal = TRUE;
1997             } else if (state == prop_atoms.net_wm_state_maximized_vert) {
1998                 max_vert = TRUE;
1999             } else if (state == prop_atoms.net_wm_state_maximized_horz) {
2000                 max_horz = TRUE;
2001             } else if (state == prop_atoms.net_wm_state_shaded) {
2002                 shaded = TRUE;
2003             } else if (state == prop_atoms.net_wm_state_skip_taskbar) {
2004                 self->skip_taskbar = TRUE;
2005             } else if (state == prop_atoms.net_wm_state_skip_pager) {
2006                 self->skip_pager = TRUE;
2007             } else if (state == prop_atoms.net_wm_state_fullscreen) {
2008                 fullscreen = TRUE;
2009             } else if (state == prop_atoms.net_wm_state_above) {
2010                 self->above = TRUE;
2011             } else if (state == prop_atoms.net_wm_state_below) {
2012                 self->below = TRUE;
2013             }
2014
2015         } else { /* action == prop_atoms.net_wm_state_remove */
2016             if (state == prop_atoms.net_wm_state_modal) {
2017                 self->modal = FALSE;
2018             } else if (state == prop_atoms.net_wm_state_maximized_vert) {
2019                 max_vert = FALSE;
2020             } else if (state == prop_atoms.net_wm_state_maximized_horz) {
2021                 max_horz = FALSE;
2022             } else if (state == prop_atoms.net_wm_state_shaded) {
2023                 shaded = FALSE;
2024             } else if (state == prop_atoms.net_wm_state_skip_taskbar) {
2025                 self->skip_taskbar = FALSE;
2026             } else if (state == prop_atoms.net_wm_state_skip_pager) {
2027                 self->skip_pager = FALSE;
2028             } else if (state == prop_atoms.net_wm_state_fullscreen) {
2029                 fullscreen = FALSE;
2030             } else if (state == prop_atoms.net_wm_state_above) {
2031                 self->above = FALSE;
2032             } else if (state == prop_atoms.net_wm_state_below) {
2033                 self->below = FALSE;
2034             }
2035         }
2036     }
2037     if (max_horz != self->max_horz || max_vert != self->max_vert) {
2038         if (max_horz != self->max_horz && max_vert != self->max_vert) {
2039             /* toggling both */
2040             if (max_horz == max_vert) { /* both going the same way */
2041                 client_maximize(self, max_horz, 0, TRUE);
2042             } else {
2043                 client_maximize(self, max_horz, 1, TRUE);
2044                 client_maximize(self, max_vert, 2, TRUE);
2045             }
2046         } else {
2047             /* toggling one */
2048             if (max_horz != self->max_horz)
2049                 client_maximize(self, max_horz, 1, TRUE);
2050             else
2051                 client_maximize(self, max_vert, 2, TRUE);
2052         }
2053     }
2054     /* change fullscreen state before shading, as it will affect if the window
2055        can shade or not */
2056     if (fullscreen != self->fullscreen)
2057         client_fullscreen(self, fullscreen, TRUE);
2058     if (shaded != self->shaded)
2059         client_shade(self, shaded);
2060     client_calc_layer(self);
2061     client_change_state(self); /* change the hint to relect these changes */
2062 }
2063
2064 Client *client_focus_target(Client *self)
2065 {
2066     Client *child;
2067
2068     /* if we have a modal child, then focus it, not us */
2069     child = client_find_modal_child(self);
2070     if (child) return child;
2071     return self;
2072 }
2073
2074 gboolean client_focusable(Client *self)
2075 {
2076     /* won't try focus if the client doesn't want it, or if the window isn't
2077        visible on the screen */
2078     return self->frame->visible &&
2079         (self->can_focus || self->focus_notify);
2080 }
2081
2082 gboolean client_focus(Client *self)
2083 {
2084     XEvent ev;
2085
2086     /* choose the correct target */
2087     self = client_focus_target(self);
2088
2089     if (!client_focusable(self))
2090         return FALSE;
2091
2092     /* do a check to see if the window has already been unmapped or destroyed
2093        do this intelligently while watching out for unmaps we've generated
2094        (ignore_unmaps > 0) */
2095     if (XCheckTypedWindowEvent(ob_display, self->window,
2096                                DestroyNotify, &ev)) {
2097         XPutBackEvent(ob_display, &ev);
2098         return FALSE;
2099     }
2100     while (XCheckTypedWindowEvent(ob_display, self->window,
2101                                   UnmapNotify, &ev)) {
2102         if (self->ignore_unmaps) {
2103             self->ignore_unmaps--;
2104         } else {
2105             XPutBackEvent(ob_display, &ev);
2106             return FALSE;
2107         }
2108     }
2109
2110     if (self->can_focus)
2111         /* RevertToPointerRoot causes much more headache than TevertToNone, so
2112            I choose to use it always, hopefully to find errors quicker, if any
2113            are left. (I hate X. I hate focus events.) */
2114         XSetInputFocus(ob_display, self->window, RevertToPointerRoot,
2115                        event_lasttime);
2116
2117     if (self->focus_notify) {
2118         XEvent ce;
2119         ce.xclient.type = ClientMessage;
2120         ce.xclient.message_type = prop_atoms.wm_protocols;
2121         ce.xclient.display = ob_display;
2122         ce.xclient.window = self->window;
2123         ce.xclient.format = 32;
2124         ce.xclient.data.l[0] = prop_atoms.wm_take_focus;
2125         ce.xclient.data.l[1] = event_lasttime;
2126         ce.xclient.data.l[2] = 0l;
2127         ce.xclient.data.l[3] = 0l;
2128         ce.xclient.data.l[4] = 0l;
2129         XSendEvent(ob_display, self->window, FALSE, NoEventMask, &ce);
2130     }
2131
2132 #ifdef DEBUG_FOCUS
2133     g_message("focusing %lx", self->window);
2134 #endif
2135
2136     /* Cause the FocusIn to come back to us. Important for desktop switches,
2137        since otherwise we'll have no FocusIn on the queue and send it off to
2138        the focus_backup. */
2139     XSync(ob_display, FALSE);
2140     return TRUE;
2141 }
2142
2143 void client_unfocus(Client *self)
2144 {
2145     g_assert(focus_client == self);
2146 #ifdef DEBUG_FOCUS
2147     g_message("client_unfocus");
2148 #endif
2149     focus_fallback(Fallback_Unfocusing);
2150 }
2151
2152 gboolean client_focused(Client *self)
2153 {
2154     return self == focus_client;
2155 }
2156
2157 Icon *client_icon(Client *self, int w, int h)
2158 {
2159     int i;
2160     /* si is the smallest image >= req */
2161     /* li is the largest image < req */
2162     unsigned long size, smallest = 0xffffffff, largest = 0, si = 0, li = 0;
2163
2164     if (!self->nicons) return NULL;
2165
2166     for (i = 0; i < self->nicons; ++i) {
2167         size = self->icons[i].width * self->icons[i].height;
2168         if (size < smallest && size >= (unsigned)(w * h)) {
2169             smallest = size;
2170             si = i;
2171         }
2172         if (size > largest && size <= (unsigned)(w * h)) {
2173             largest = size;
2174             li = i;
2175         }
2176     }
2177     if (largest == 0) /* didnt find one smaller than the requested size */
2178         return &self->icons[si];
2179     return &self->icons[li];
2180 }