Dogcows Code - chaz/openbox/blob - src/screen.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #ifdef HAVE_CONFIG_H
   4 # include "../config.h"
   5 #endif
   6
   7 extern "C" {
   8 #ifdef    HAVE_STDIO_H
   9 #  include <stdio.h>
  10 #endif // HAVE_STDIO_H
  11
  12 #ifdef    HAVE_STRING_H
  13 #  include <string.h>
  14 #endif // HAVE_STRING_H
  15
  16 #ifdef    HAVE_UNISTD_H
  17 #  include <sys/types.h>
  18 #  include <unistd.h>
  19 #endif // HAVE_UNISTD_H
  20
  21 #include "gettext.h"
  22 #define _(str) gettext(str)
  23 }
  24
  25 #include "screen.hh"
  26 #include "client.hh"
  27 #include "openbox.hh"
  28 #include "frame.hh"
  29 #include "bindings.hh"
  30 #include "python.hh"
  31 #include "otk/display.hh"
  32 #include "otk/property.hh"
  33
  34 #include <vector>
  35 #include <algorithm>
  36
  37 static bool running;
  38 static int anotherWMRunning(Display *display, XErrorEvent *) {
  39   printf(_("Another window manager already running on display %s.\n"),
  40          DisplayString(display));
  41   running = true;
  42   return -1;
  43 }
  44
  45
  46 namespace ob {
  47
  48
  49 Screen::Screen(int screen)
  50   : WidgetBase(WidgetBase::Type_Root),
  51     _number(screen),
  52     _style(screen, "")
  53 {
  54   assert(screen >= 0); assert(screen < ScreenCount(**otk::display));
  55   _info = otk::display->screenInfo(screen);
  56
  57   ::running = false;
  58   XErrorHandler old = XSetErrorHandler(::anotherWMRunning);
  59   XSelectInput(**otk::display, _info->rootWindow(),
  60                Screen::event_mask);
  61   XSync(**otk::display, false);
  62   XSetErrorHandler(old);
  63
  64   _managed = !::running;
  65   if (! _managed) return; // was unable to manage the screen
  66
  67   printf(_("Managing screen %d: visual 0x%lx, depth %d\n"),
  68          _number, XVisualIDFromVisual(_info->visual()), _info->depth());
  69
  70   otk::Property::set(_info->rootWindow(), otk::Property::atoms.openbox_pid,
  71                      otk::Property::atoms.cardinal, (unsigned long) getpid());
  72
  73   // set the mouse cursor for the root window (the default cursor)
  74   XDefineCursor(**otk::display, _info->rootWindow(),
  75                 openbox->cursors().session);
  76
  77   // XXX: initialize the screen's style
  78   /*
  79   otk::ustring stylepath;
  80   python_get_string("theme", &stylepath);
  81   otk::Configuration sconfig(false);
  82   sconfig.setFile(otk::expandTilde(stylepath.c_str()));
  83   if (!sconfig.load()) {
  84     sconfig.setFile(otk::expandTilde(DEFAULTSTYLE));
  85     if (!sconfig.load()) {
  86       printf(_("Unable to load default style: %s. Aborting.\n"), DEFAULTSTYLE);
  87       ::exit(1);
  88     }
  89   }
  90   _style.load(sconfig);
  91   */
  92   otk::display->renderControl(_number)->drawRoot(*_style.rootColor());
  93
  94   // set up notification of netwm support
  95   changeSupportedAtoms();
  96
  97   // Set the netwm properties for geometry
  98   unsigned long geometry[] = { _info->width(),
  99                                _info->height() };
 100   otk::Property::set(_info->rootWindow(),
 101                      otk::Property::atoms.net_desktop_geometry,
 102                      otk::Property::atoms.cardinal, geometry, 2);
 103
 104   // Set the net_desktop_names property
 105   std::vector<otk::ustring> names;
 106   python_get_stringlist("desktop_names", &names);
 107   otk::Property::set(_info->rootWindow(),
 108                      otk::Property::atoms.net_desktop_names,
 109                      otk::Property::utf8, names);
 110   // the above set() will cause the updateDesktopNames to fire right away so
 111   // we have a list of desktop names
 112
 113   if (!python_get_long("number_of_desktops", &_num_desktops))
 114     _num_desktops = 1;
 115   changeNumDesktops(_num_desktops); // set the hint
 116
 117   _desktop = 0;
 118   changeDesktop(0); // set the hint
 119
 120   // create the window which gets focus when no clients get it
 121   XSetWindowAttributes attr;
 122   attr.override_redirect = true;
 123   _focuswindow = XCreateWindow(**otk::display, _info->rootWindow(),
 124                                -100, -100, 1, 1, 0, 0, InputOnly,
 125                                _info->visual(), CWOverrideRedirect, &attr);
 126   XMapRaised(**otk::display, _focuswindow);
 127
 128   // these may be further updated if any pre-existing windows are found in
 129   // the manageExising() function
 130   changeClientList();  // initialize the client lists, which will be empty
 131   calcArea();          // initialize the available working area
 132
 133   // register this class as the event handler for the root window
 134   openbox->registerHandler(_info->rootWindow(), this);
 135
 136   // call the python Startup callbacks
 137   EventData data(_number, 0, EventAction::Startup, 0);
 138   openbox->bindings()->fireEvent(&data);
 139 }
 140
 141
 142 Screen::~Screen()
 143 {
 144   if (! _managed) return;
 145
 146   XSelectInput(**otk::display, _info->rootWindow(), NoEventMask);
 147
 148   // unmanage all windows
 149   while (!clients.empty())
 150     unmanageWindow(clients.front());
 151
 152   // call the python Shutdown callbacks
 153   EventData data(_number, 0, EventAction::Shutdown, 0);
 154   openbox->bindings()->fireEvent(&data);
 155
 156   XDestroyWindow(**otk::display, _focuswindow);
 157   XDestroyWindow(**otk::display, _supportwindow);
 158 }
 159
 160
 161 void Screen::manageExisting()
 162 {
 163   unsigned int i, j, nchild;
 164   Window r, p, *children;
 165   XQueryTree(**otk::display, _info->rootWindow(), &r, &p,
 166              &children, &nchild);
 167
 168   // preen the window list of all icon windows... for better dockapp support
 169   for (i = 0; i < nchild; i++) {
 170     if (children[i] == None) continue;
 171
 172     XWMHints *wmhints = XGetWMHints(**otk::display,
 173                                     children[i]);
 174
 175     if (wmhints) {
 176       if ((wmhints->flags & IconWindowHint) &&
 177           (wmhints->icon_window != children[i])) {
 178         for (j = 0; j < nchild; j++) {
 179           if (children[j] == wmhints->icon_window) {
 180             children[j] = None;
 181             break;
 182           }
 183         }
 184       }
 185
 186       XFree(wmhints);
 187     }
 188   }
 189
 190   // manage shown windows
 191   for (i = 0; i < nchild; ++i) {
 192     if (children[i] == None)
 193       continue;
 194
 195     XWindowAttributes attrib;
 196     if (XGetWindowAttributes(**otk::display, children[i], &attrib)) {
 197       if (attrib.override_redirect) continue;
 198
 199       if (attrib.map_state != IsUnmapped) {
 200         manageWindow(children[i]);
 201       }
 202     }
 203   }
 204
 205   XFree(children);
 206 }
 207
 208
 209 void Screen::updateStrut()
 210 {
 211   _strut.left = _strut.right = _strut.top = _strut.bottom = 0;
 212
 213   Client::List::iterator it, end = clients.end();
 214   for (it = clients.begin(); it != end; ++it) {
 215     const otk::Strut &s = (*it)->strut();
 216     _strut.left = std::max(_strut.left, s.left);
 217     _strut.right = std::max(_strut.right, s.right);
 218     _strut.top = std::max(_strut.top, s.top);
 219     _strut.bottom = std::max(_strut.bottom, s.bottom);
 220   }
 221   calcArea();
 222 }
 223
 224
 225 void Screen::calcArea()
 226 {
 227   otk::Rect old_area = _area;
 228
 229 /*
 230 #ifdef    XINERAMA
 231   // reset to the full areas
 232   if (isXineramaActive())
 233     xineramaUsableArea = getXineramaAreas();
 234 #endif // XINERAMA
 235 */
 236
 237   _area.setRect(_strut.left, _strut.top,
 238                 _info->width() - (_strut.left + _strut.right),
 239                 _info->height() - (_strut.top + _strut.bottom));
 240
 241 /*
 242 #ifdef    XINERAMA
 243   if (isXineramaActive()) {
 244     // keep each of the ximerama-defined areas inside the strut
 245     RectList::iterator xit, xend = xineramaUsableArea.end();
 246     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 247       if (xit->x() < usableArea.x()) {
 248         xit->setX(usableArea.x());
 249         xit->setWidth(xit->width() - usableArea.x());
 250       }
 251       if (xit->y() < usableArea.y()) {
 252         xit->setY(usableArea.y());
 253         xit->setHeight(xit->height() - usableArea.y());
 254       }
 255       if (xit->x() + xit->width() > usableArea.width())
 256         xit->setWidth(usableArea.width() - xit->x());
 257       if (xit->y() + xit->height() > usableArea.height())
 258         xit->setHeight(usableArea.height() - xit->y());
 259     }
 260   }
 261 #endif // XINERAMA
 262 */
 263
 264   if (old_area != _area) {
 265     // the area has changed, adjust all the maximized windows
 266     Client::List::iterator it, end = clients.end();
 267     for (it = clients.begin(); it != end; ++it)
 268       (*it)->remaximize();
 269   }
 270
 271   changeWorkArea();
 272 }
 273
 274
 275 void Screen::changeSupportedAtoms()
 276 {
 277   // create the netwm support window
 278   _supportwindow = XCreateSimpleWindow(**otk::display,
 279                                        _info->rootWindow(),
 280                                        0, 0, 1, 1, 0, 0, 0);
 281
 282   // set supporting window
 283   otk::Property::set(_info->rootWindow(),
 284                      otk::Property::atoms.net_supporting_wm_check,
 285                      otk::Property::atoms.window, _supportwindow);
 286
 287   //set properties on the supporting window
 288   otk::Property::set(_supportwindow, otk::Property::atoms.net_wm_name,
 289                      otk::Property::utf8, "Openbox");
 290   otk::Property::set(_supportwindow,
 291                      otk::Property::atoms.net_supporting_wm_check,
 292                      otk::Property::atoms.window, _supportwindow);
 293
 294
 295   Atom supported[] = {
 296     otk::Property::atoms.net_current_desktop,
 297     otk::Property::atoms.net_number_of_desktops,
 298     otk::Property::atoms.net_desktop_geometry,
 299     otk::Property::atoms.net_desktop_viewport,
 300     otk::Property::atoms.net_active_window,
 301     otk::Property::atoms.net_workarea,
 302     otk::Property::atoms.net_client_list,
 303     otk::Property::atoms.net_client_list_stacking,
 304     otk::Property::atoms.net_desktop_names,
 305     otk::Property::atoms.net_close_window,
 306     otk::Property::atoms.net_wm_name,
 307     otk::Property::atoms.net_wm_visible_name,
 308     otk::Property::atoms.net_wm_icon_name,
 309     otk::Property::atoms.net_wm_visible_icon_name,
 310 /*
 311     otk::Property::atoms.net_wm_desktop,
 312 */
 313     otk::Property::atoms.net_wm_strut,
 314     otk::Property::atoms.net_wm_window_type,
 315     otk::Property::atoms.net_wm_window_type_desktop,
 316     otk::Property::atoms.net_wm_window_type_dock,
 317     otk::Property::atoms.net_wm_window_type_toolbar,
 318     otk::Property::atoms.net_wm_window_type_menu,
 319     otk::Property::atoms.net_wm_window_type_utility,
 320     otk::Property::atoms.net_wm_window_type_splash,
 321     otk::Property::atoms.net_wm_window_type_dialog,
 322     otk::Property::atoms.net_wm_window_type_normal,
 323 /*
 324     otk::Property::atoms.net_wm_moveresize,
 325     otk::Property::atoms.net_wm_moveresize_size_topleft,
 326     otk::Property::atoms.net_wm_moveresize_size_topright,
 327     otk::Property::atoms.net_wm_moveresize_size_bottomleft,
 328     otk::Property::atoms.net_wm_moveresize_size_bottomright,
 329     otk::Property::atoms.net_wm_moveresize_move,
 330 */
 331     otk::Property::atoms.net_wm_allowed_actions,
 332     otk::Property::atoms.net_wm_action_move,
 333     otk::Property::atoms.net_wm_action_resize,
 334     otk::Property::atoms.net_wm_action_minimize,
 335     otk::Property::atoms.net_wm_action_shade,
 336 /*    otk::Property::atoms.net_wm_action_stick,*/
 337     otk::Property::atoms.net_wm_action_maximize_horz,
 338     otk::Property::atoms.net_wm_action_maximize_vert,
 339     otk::Property::atoms.net_wm_action_fullscreen,
 340     otk::Property::atoms.net_wm_action_change_desktop,
 341     otk::Property::atoms.net_wm_action_close,
 342
 343     otk::Property::atoms.net_wm_state,
 344     otk::Property::atoms.net_wm_state_modal,
 345     otk::Property::atoms.net_wm_state_maximized_vert,
 346     otk::Property::atoms.net_wm_state_maximized_horz,
 347     otk::Property::atoms.net_wm_state_shaded,
 348     otk::Property::atoms.net_wm_state_skip_taskbar,
 349     otk::Property::atoms.net_wm_state_skip_pager,
 350     otk::Property::atoms.net_wm_state_hidden,
 351     otk::Property::atoms.net_wm_state_fullscreen,
 352     otk::Property::atoms.net_wm_state_above,
 353     otk::Property::atoms.net_wm_state_below,
 354   };
 355   const int num_supported = sizeof(supported)/sizeof(Atom);
 356
 357   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_supported,
 358                      otk::Property::atoms.atom, supported, num_supported);
 359 }
 360
 361
 362 void Screen::changeClientList()
 363 {
 364   Window *windows;
 365   unsigned int size = clients.size();
 366
 367   // create an array of the window ids
 368   if (size > 0) {
 369     Window *win_it;
 370
 371     windows = new Window[size];
 372     win_it = windows;
 373     Client::List::const_iterator it = clients.begin();
 374     const Client::List::const_iterator end = clients.end();
 375     for (; it != end; ++it, ++win_it)
 376       *win_it = (*it)->window();
 377   } else
 378     windows = (Window*) 0;
 379
 380   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_client_list,
 381                      otk::Property::atoms.window, windows, size);
 382
 383   if (size)
 384     delete [] windows;
 385
 386   changeStackingList();
 387 }
 388
 389
 390 void Screen::changeStackingList()
 391 {
 392   Window *windows;
 393   unsigned int size = _stacking.size();
 394
 395   assert(size == clients.size()); // just making sure.. :)
 396
 397
 398   // create an array of the window ids (from bottom to top, reverse order!)
 399   if (size > 0) {
 400     Window *win_it;
 401
 402     windows = new Window[size];
 403     win_it = windows;
 404     Client::List::const_reverse_iterator it = _stacking.rbegin();
 405     const Client::List::const_reverse_iterator end = _stacking.rend();
 406     for (; it != end; ++it, ++win_it)
 407       *win_it = (*it)->window();
 408   } else
 409     windows = (Window*) 0;
 410
 411   otk::Property::set(_info->rootWindow(),
 412                      otk::Property::atoms.net_client_list_stacking,
 413                      otk::Property::atoms.window, windows, size);
 414
 415   if (size)
 416     delete [] windows;
 417 }
 418
 419
 420 void Screen::changeWorkArea() {
 421   unsigned long *dims = new unsigned long[4 * _num_desktops];
 422   for (long i = 0; i < _num_desktops; ++i) {
 423     dims[(i * 4) + 0] = _area.x();
 424     dims[(i * 4) + 1] = _area.y();
 425     dims[(i * 4) + 2] = _area.width();
 426     dims[(i * 4) + 3] = _area.height();
 427   }
 428   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_workarea,
 429                      otk::Property::atoms.cardinal, dims, 4 * _num_desktops);
 430   delete [] dims;
 431 }
 432
 433
 434 void Screen::manageWindow(Window window)
 435 {
 436   Client *client = 0;
 437   XWMHints *wmhint;
 438   XSetWindowAttributes attrib_set;
 439   XEvent e;
 440   XWindowAttributes attrib;
 441
 442   otk::display->grab();
 443
 444   // check if it has already been unmapped by the time we started mapping
 445   // the grab does a sync so we don't have to here
 446   if (XCheckTypedWindowEvent(**otk::display, window, DestroyNotify, &e) ||
 447       XCheckTypedWindowEvent(**otk::display, window, UnmapNotify, &e)) {
 448     XPutBackEvent(**otk::display, &e);
 449
 450     otk::display->ungrab();
 451     return; // don't manage it
 452   }
 453
 454   if (!XGetWindowAttributes(**otk::display, window, &attrib) ||
 455       attrib.override_redirect) {
 456     otk::display->ungrab();
 457     return; // don't manage it
 458   }
 459
 460   // is the window a docking app
 461   if ((wmhint = XGetWMHints(**otk::display, window))) {
 462     if ((wmhint->flags & StateHint) &&
 463         wmhint->initial_state == WithdrawnState) {
 464       //slit->addClient(w); // XXX: make dock apps work!
 465
 466       otk::display->ungrab();
 467       XFree(wmhint);
 468       return;
 469     }
 470     XFree(wmhint);
 471   }
 472
 473   // choose the events we want to receive on the CLIENT window
 474   attrib_set.event_mask = Client::event_mask;
 475   attrib_set.do_not_propagate_mask = Client::no_propagate_mask;
 476   XChangeWindowAttributes(**otk::display, window,
 477                           CWEventMask|CWDontPropagate, &attrib_set);
 478
 479   // create the Client class, which gets all of the hints on the window
 480   client = new Client(_number, window);
 481   // register for events
 482   openbox->registerHandler(window, client);
 483   // add to the wm's map
 484   openbox->addClient(window, client);
 485
 486   // we dont want a border on the client
 487   client->toggleClientBorder(false);
 488
 489   // specify that if we exit, the window should not be destroyed and should be
 490   // reparented back to root automatically
 491   XChangeSaveSet(**otk::display, window, SetModeInsert);
 492
 493   // create the decoration frame for the client window
 494   client->frame = new Frame(client, &_style);
 495   // register the plate for events (map req's)
 496   // this involves removing itself from the handler list first, since it is
 497   // auto added to the list, being a widget. we won't get any events on the
 498   // plate except for events for the client (SubstructureRedirectMask)
 499   openbox->clearHandler(client->frame->plate());
 500   openbox->registerHandler(client->frame->plate(), client);
 501
 502   // add to the wm's map
 503   openbox->addClient(client->frame->window(), client);
 504   openbox->addClient(client->frame->plate(), client);
 505   openbox->addClient(client->frame->titlebar(), client);
 506   openbox->addClient(client->frame->label(), client);
 507   openbox->addClient(client->frame->button_max(), client);
 508   openbox->addClient(client->frame->button_iconify(), client);
 509   openbox->addClient(client->frame->button_alldesk(), client);
 510   openbox->addClient(client->frame->button_close(), client);
 511   openbox->addClient(client->frame->handle(), client);
 512   openbox->addClient(client->frame->grip_left(), client);
 513   openbox->addClient(client->frame->grip_right(), client);
 514
 515   // reparent the client to the frame
 516   client->frame->grabClient();
 517
 518   if (openbox->state() != Openbox::State_Starting) {
 519     // position the window intelligenty .. hopefully :)
 520     // call the python PLACEWINDOW binding
 521     EventData data(_number, client, EventAction::PlaceWindow, 0);
 522     openbox->bindings()->fireEvent(&data);
 523   }
 524
 525   EventData ddata(_number, client, EventAction::DisplayingWindow, 0);
 526   openbox->bindings()->fireEvent(&ddata);
 527
 528   // if on the current desktop.. (or all desktops)
 529   if (client->desktop() == _desktop ||
 530       client->desktop() == (signed)0xffffffff) {
 531     client->frame->show();
 532   }
 533
 534   client->applyStartupState();
 535
 536   otk::display->ungrab();
 537
 538   // add to the screen's list
 539   clients.push_back(client);
 540   // once the client is in the list, update our strut to include the new
 541   // client's (it is good that this happens after window placement!)
 542   updateStrut();
 543   // this puts into the stacking order, then raises it
 544   _stacking.push_back(client);
 545   raiseWindow(client);
 546   // update the root properties
 547   changeClientList();
 548
 549   openbox->bindings()->grabButtons(true, client);
 550
 551   EventData ndata(_number, client, EventAction::NewWindow, 0);
 552   openbox->bindings()->fireEvent(&ndata);
 553
 554 #ifdef DEBUG
 555   printf("Managed window 0x%lx frame 0x%lx\n",
 556          window, client->frame->window());
 557 #endif
 558 }
 559
 560
 561 void Screen::unmanageWindow(Client *client)
 562 {
 563   Frame *frame = client->frame;
 564
 565   // call the python CLOSEWINDOW binding
 566   EventData data(_number, client, EventAction::CloseWindow, 0);
 567   openbox->bindings()->fireEvent(&data);
 568
 569   openbox->bindings()->grabButtons(false, client);
 570
 571   // remove from the wm's map
 572   openbox->removeClient(client->window());
 573   openbox->removeClient(frame->window());
 574   openbox->removeClient(frame->plate());
 575   openbox->removeClient(frame->titlebar());
 576   openbox->removeClient(frame->label());
 577   openbox->removeClient(frame->button_max());
 578   openbox->removeClient(frame->button_iconify());
 579   openbox->removeClient(frame->button_alldesk());
 580   openbox->removeClient(frame->button_close());
 581   openbox->removeClient(frame->handle());
 582   openbox->removeClient(frame->grip_left());
 583   openbox->removeClient(frame->grip_right());
 584   // unregister for handling events
 585   openbox->clearHandler(client->window());
 586
 587   // remove the window from our save set
 588   XChangeSaveSet(**otk::display, client->window(), SetModeDelete);
 589
 590   // we dont want events no more
 591   XSelectInput(**otk::display, client->window(), NoEventMask);
 592
 593   frame->hide();
 594
 595   // give the client its border back
 596   client->toggleClientBorder(true);
 597
 598   // reparent the window out of the frame
 599   frame->releaseClient();
 600
 601 #ifdef DEBUG
 602   Window framewin = client->frame->window();
 603 #endif
 604   delete client->frame;
 605   client->frame = 0;
 606
 607   // remove from the stacking order
 608   _stacking.remove(client);
 609
 610   // remove from the screen's list
 611   clients.remove(client);
 612
 613   // once the client is out of the list, update our strut to remove it's
 614   // influence
 615   updateStrut();
 616
 617   // unfocus the client (calls the focus callbacks)
 618   client->unfocus();
 619
 620 #ifdef DEBUG
 621   printf("Unmanaged window 0x%lx frame 0x%lx\n", client->window(), framewin);
 622 #endif
 623
 624   delete client;
 625
 626   // update the root properties
 627   changeClientList();
 628 }
 629
 630 void Screen::lowerWindow(Client *client)
 631 {
 632   Window wins[2];  // only ever restack 2 windows.
 633
 634   assert(!_stacking.empty()); // this would be bad
 635
 636   Client::List::iterator it = --_stacking.end();
 637   const Client::List::iterator end = _stacking.begin();
 638
 639   for (; it != end && (*it)->layer() < client->layer(); --it);
 640   if (*it == client) return;          // already the bottom, return
 641
 642   wins[0] = (*it)->frame->window();
 643   wins[1] = client->frame->window();
 644
 645   _stacking.remove(client);
 646   _stacking.insert(++it, client);
 647
 648   XRestackWindows(**otk::display, wins, 2);
 649   changeStackingList();
 650 }
 651
 652 void Screen::raiseWindow(Client *client)
 653 {
 654   Window wins[2];  // only ever restack 2 windows.
 655
 656   assert(!_stacking.empty()); // this would be bad
 657
 658   // remove the client before looking so we can't run into ourselves
 659   _stacking.remove(client);
 660
 661   Client::List::iterator it = _stacking.begin();
 662   const Client::List::iterator end = _stacking.end();
 663
 664   // the stacking list is from highest to lowest
 665   for (; it != end && (*it)->layer() > client->layer(); ++it);
 666
 667   /*
 668     if our new position is the top, we want to stack under the _focuswindow
 669     otherwise, we want to stack under the previous window in the stack.
 670   */
 671   wins[0] = (it == _stacking.begin() ? _focuswindow :
 672              ((*(--Client::List::const_iterator(it)))->frame->window()));
 673   wins[1] = client->frame->window();
 674
 675   _stacking.insert(it, client);
 676
 677   XRestackWindows(**otk::display, wins, 2);
 678   changeStackingList();
 679 }
 680
 681 void Screen::changeDesktop(long desktop)
 682 {
 683   if (!(desktop >= 0 && desktop < _num_desktops)) return;
 684
 685   printf("Moving to desktop %ld\n", desktop);
 686
 687   long old = _desktop;
 688
 689   _desktop = desktop;
 690   otk::Property::set(_info->rootWindow(),
 691                      otk::Property::atoms.net_current_desktop,
 692                      otk::Property::atoms.cardinal, _desktop);
 693
 694   if (old == _desktop) return;
 695
 696   Client::List::iterator it, end = clients.end();
 697   for (it = clients.begin(); it != end; ++it) {
 698     if ((*it)->desktop() == old) {
 699       (*it)->frame->hide();
 700     } else if ((*it)->desktop() == _desktop) {
 701       (*it)->frame->show();
 702     }
 703   }
 704
 705   // force the callbacks to fire
 706   if (!openbox->focusedClient())
 707     openbox->setFocusedClient(0);
 708 }
 709
 710 void Screen::changeNumDesktops(long num)
 711 {
 712   assert(num > 0);
 713
 714   if (!(num > 0)) return;
 715
 716   // move windows on desktops that will no longer exist!
 717   Client::List::iterator it, end = clients.end();
 718   for (it = clients.begin(); it != end; ++it) {
 719     int d = (*it)->desktop();
 720     if (d >= num && !(d == 0xffffffff || d == Client::ICONIC_DESKTOP)) {
 721       XEvent ce;
 722       ce.xclient.type = ClientMessage;
 723       ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 724       ce.xclient.display = **otk::display;
 725       ce.xclient.window = (*it)->window();
 726       ce.xclient.format = 32;
 727       ce.xclient.data.l[0] = num - 1;
 728       XSendEvent(**otk::display, _info->rootWindow(), False,
 729                  SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 730     }
 731   }
 732
 733   _num_desktops = num;
 734   otk::Property::set(_info->rootWindow(),
 735                      otk::Property::atoms.net_number_of_desktops,
 736                      otk::Property::atoms.cardinal, _num_desktops);
 737
 738   // set the viewport hint
 739   unsigned long *viewport = new unsigned long[_num_desktops * 2];
 740   memset(viewport, 0, sizeof(unsigned long) * _num_desktops * 2);
 741   otk::Property::set(_info->rootWindow(),
 742                      otk::Property::atoms.net_desktop_viewport,
 743                      otk::Property::atoms.cardinal,
 744                      viewport, _num_desktops * 2);
 745   delete [] viewport;
 746
 747   // update the work area hint
 748   changeWorkArea();
 749
 750   // change our desktop if we're on one that no longer exists!
 751   if (_desktop >= num)
 752     changeDesktop(num - 1);
 753 }
 754
 755
 756 void Screen::updateDesktopNames()
 757 {
 758   unsigned long num = (unsigned) -1;
 759
 760   if (!otk::Property::get(_info->rootWindow(),
 761                           otk::Property::atoms.net_desktop_names,
 762                           otk::Property::utf8, &num, &_desktop_names))
 763     _desktop_names.clear();
 764   while ((long)_desktop_names.size() < _num_desktops)
 765     _desktop_names.push_back("Unnamed");
 766 }
 767
 768
 769 void Screen::setDesktopName(long i, const otk::ustring &name)
 770 {
 771   assert(i >= 0);
 772
 773   if (i >= _num_desktops) return;
 774
 775   otk::Property::StringVect newnames = _desktop_names;
 776   newnames[i] = name;
 777   otk::Property::set(_info->rootWindow(),
 778                      otk::Property::atoms.net_desktop_names,
 779                      otk::Property::utf8, newnames);
 780 }
 781
 782
 783 void Screen::propertyHandler(const XPropertyEvent &e)
 784 {
 785   otk::EventHandler::propertyHandler(e);
 786
 787   // compress changes to a single property into a single change
 788   XEvent ce;
 789   while (XCheckTypedWindowEvent(**otk::display, _info->rootWindow(),
 790                                 e.type, &ce)) {
 791     // XXX: it would be nice to compress ALL changes to a property, not just
 792     //      changes in a row without other props between.
 793     if (ce.xproperty.atom != e.atom) {
 794       XPutBackEvent(**otk::display, &ce);
 795       break;
 796     }
 797   }
 798
 799   if (e.atom == otk::Property::atoms.net_desktop_names)
 800     updateDesktopNames();
 801 }
 802
 803
 804 void Screen::clientMessageHandler(const XClientMessageEvent &e)
 805 {
 806   otk::EventHandler::clientMessageHandler(e);
 807
 808   if (e.format != 32) return;
 809
 810   if (e.message_type == otk::Property::atoms.net_current_desktop) {
 811     changeDesktop(e.data.l[0]);
 812   } else if (e.message_type == otk::Property::atoms.net_number_of_desktops) {
 813     changeNumDesktops(e.data.l[0]);
 814   }
 815 }
 816
 817
 818 void Screen::mapRequestHandler(const XMapRequestEvent &e)
 819 {
 820   otk::EventHandler::mapRequestHandler(e);
 821
 822 #ifdef    DEBUG
 823   printf("MapRequest for 0x%lx\n", e.window);
 824 #endif // DEBUG
 825
 826   Client *c = openbox->findClient(e.window);
 827   if (c) {
 828 #ifdef DEBUG
 829     printf("DEBUG: MAP REQUEST CAUGHT IN SCREEN. IGNORED.\n");
 830 #endif
 831   } else
 832     manageWindow(e.window);
 833 }
 834
 835 }