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   : _number(screen)
  51 {
  52   assert(screen >= 0); assert(screen < ScreenCount(**otk::display));
  53   _info = otk::display->screenInfo(screen);
  54
  55   ::running = false;
  56   XErrorHandler old = XSetErrorHandler(::anotherWMRunning);
  57   XSelectInput(**otk::display, _info->rootWindow(),
  58                Screen::event_mask);
  59   XSync(**otk::display, false);
  60   XSetErrorHandler(old);
  61
  62   _managed = !::running;
  63   if (! _managed) return; // was unable to manage the screen
  64
  65 #ifdef DEBUG
  66   printf(_("Managing screen %d: visual 0x%lx, depth %d\n"),
  67          _number, XVisualIDFromVisual(_info->visual()), _info->depth());
  68 #endif
  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)->
  93     drawRoot(*otk::RenderStyle::style(_number)->rootColor());
  94
  95   // set up notification of netwm support
  96   changeSupportedAtoms();
  97
  98   // Set the netwm properties for geometry
  99   unsigned long geometry[] = { _info->size().width(),
 100                                _info->size().height() };
 101   otk::Property::set(_info->rootWindow(),
 102                      otk::Property::atoms.net_desktop_geometry,
 103                      otk::Property::atoms.cardinal, geometry, 2);
 104
 105   // Set the net_desktop_names property
 106   std::vector<otk::ustring> names;
 107   python_get_stringlist("DESKTOP_NAMES", &names);
 108   otk::Property::set(_info->rootWindow(),
 109                      otk::Property::atoms.net_desktop_names,
 110                      otk::Property::utf8, names);
 111   // the above set() will cause the updateDesktopNames to fire right away so
 112   // we have a list of desktop names
 113
 114   _desktop = 0;
 115
 116   if (!python_get_long("NUMBER_OF_DESKTOPS", &_num_desktops))
 117     _num_desktops = 1;
 118   changeNumDesktops(_num_desktops); // set the hint
 119
 120   changeDesktop(0); // set the hint
 121
 122   // create the window which gets focus when no clients get it
 123   XSetWindowAttributes attr;
 124   attr.override_redirect = true;
 125   _focuswindow = XCreateWindow(**otk::display, _info->rootWindow(),
 126                                -100, -100, 1, 1, 0, 0, InputOnly,
 127                                _info->visual(), CWOverrideRedirect, &attr);
 128   XMapRaised(**otk::display, _focuswindow);
 129
 130   // these may be further updated if any pre-existing windows are found in
 131   // the manageExising() function
 132   changeClientList();  // initialize the client lists, which will be empty
 133   calcArea();          // initialize the available working area
 134
 135   // register this class as the event handler for the root window
 136   openbox->registerHandler(_info->rootWindow(), this);
 137
 138   // call the python Startup callbacks
 139   EventData data(_number, 0, EventAction::Startup, 0);
 140   openbox->bindings()->fireEvent(&data);
 141 }
 142
 143
 144 Screen::~Screen()
 145 {
 146   if (! _managed) return;
 147
 148   XSelectInput(**otk::display, _info->rootWindow(), NoEventMask);
 149
 150   // unmanage all windows
 151   while (!clients.empty())
 152     unmanageWindow(clients.front());
 153
 154   // call the python Shutdown callbacks
 155   EventData data(_number, 0, EventAction::Shutdown, 0);
 156   openbox->bindings()->fireEvent(&data);
 157
 158   XDestroyWindow(**otk::display, _focuswindow);
 159   XDestroyWindow(**otk::display, _supportwindow);
 160 }
 161
 162
 163 void Screen::manageExisting()
 164 {
 165   unsigned int i, j, nchild;
 166   Window r, p, *children;
 167   XQueryTree(**otk::display, _info->rootWindow(), &r, &p,
 168              &children, &nchild);
 169
 170   // preen the window list of all icon windows... for better dockapp support
 171   for (i = 0; i < nchild; i++) {
 172     if (children[i] == None) continue;
 173
 174     XWMHints *wmhints = XGetWMHints(**otk::display,
 175                                     children[i]);
 176
 177     if (wmhints) {
 178       if ((wmhints->flags & IconWindowHint) &&
 179           (wmhints->icon_window != children[i])) {
 180         for (j = 0; j < nchild; j++) {
 181           if (children[j] == wmhints->icon_window) {
 182             children[j] = None;
 183             break;
 184           }
 185         }
 186       }
 187
 188       XFree(wmhints);
 189     }
 190   }
 191
 192   // manage shown windows
 193   for (i = 0; i < nchild; ++i) {
 194     if (children[i] == None)
 195       continue;
 196
 197     XWindowAttributes attrib;
 198     if (XGetWindowAttributes(**otk::display, children[i], &attrib)) {
 199       if (attrib.override_redirect) continue;
 200
 201       if (attrib.map_state != IsUnmapped) {
 202         manageWindow(children[i]);
 203       }
 204     }
 205   }
 206
 207   XFree(children);
 208 }
 209
 210
 211 void Screen::updateStrut()
 212 {
 213   _strut.left = _strut.right = _strut.top = _strut.bottom = 0;
 214
 215   ClientList::iterator it, end = clients.end();
 216   for (it = clients.begin(); it != end; ++it) {
 217     const otk::Strut &s = (*it)->strut();
 218     _strut.left = std::max(_strut.left, s.left);
 219     _strut.right = std::max(_strut.right, s.right);
 220     _strut.top = std::max(_strut.top, s.top);
 221     _strut.bottom = std::max(_strut.bottom, s.bottom);
 222   }
 223   calcArea();
 224 }
 225
 226
 227 void Screen::calcArea()
 228 {
 229   otk::Rect old_area = _area;
 230
 231 /*
 232 #ifdef    XINERAMA
 233   // reset to the full areas
 234   if (isXineramaActive())
 235     xineramaUsableArea = getXineramaAreas();
 236 #endif // XINERAMA
 237 */
 238
 239   _area = otk::Rect(_strut.left, _strut.top,
 240                     _info->size().width() - (_strut.left + _strut.right),
 241                     _info->size().height() - (_strut.top + _strut.bottom));
 242
 243 /*
 244 #ifdef    XINERAMA
 245   if (isXineramaActive()) {
 246     // keep each of the ximerama-defined areas inside the strut
 247     RectList::iterator xit, xend = xineramaUsableArea.end();
 248     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 249       if (xit->x() < usableArea.x()) {
 250         xit->setX(usableArea.x());
 251         xit->setWidth(xit->width() - usableArea.x());
 252       }
 253       if (xit->y() < usableArea.y()) {
 254         xit->setY(usableArea.y());
 255         xit->setHeight(xit->height() - usableArea.y());
 256       }
 257       if (xit->x() + xit->width() > usableArea.width())
 258         xit->setWidth(usableArea.width() - xit->x());
 259       if (xit->y() + xit->height() > usableArea.height())
 260         xit->setHeight(usableArea.height() - xit->y());
 261     }
 262   }
 263 #endif // XINERAMA
 264 */
 265
 266   if (old_area != _area) {
 267     // the area has changed, adjust all the maximized windows
 268     ClientList::iterator it, end = clients.end();
 269     for (it = clients.begin(); it != end; ++it)
 270       (*it)->remaximize();
 271   }
 272
 273   changeWorkArea();
 274 }
 275
 276
 277 void Screen::changeSupportedAtoms()
 278 {
 279   // create the netwm support window
 280   _supportwindow = XCreateSimpleWindow(**otk::display,
 281                                        _info->rootWindow(),
 282                                        0, 0, 1, 1, 0, 0, 0);
 283
 284   // set supporting window
 285   otk::Property::set(_info->rootWindow(),
 286                      otk::Property::atoms.net_supporting_wm_check,
 287                      otk::Property::atoms.window, _supportwindow);
 288
 289   //set properties on the supporting window
 290   otk::Property::set(_supportwindow, otk::Property::atoms.net_wm_name,
 291                      otk::Property::utf8, "Openbox");
 292   otk::Property::set(_supportwindow,
 293                      otk::Property::atoms.net_supporting_wm_check,
 294                      otk::Property::atoms.window, _supportwindow);
 295
 296
 297   Atom supported[] = {
 298     otk::Property::atoms.net_current_desktop,
 299     otk::Property::atoms.net_number_of_desktops,
 300     otk::Property::atoms.net_desktop_geometry,
 301     otk::Property::atoms.net_desktop_viewport,
 302     otk::Property::atoms.net_active_window,
 303     otk::Property::atoms.net_workarea,
 304     otk::Property::atoms.net_client_list,
 305     otk::Property::atoms.net_client_list_stacking,
 306     otk::Property::atoms.net_desktop_names,
 307     otk::Property::atoms.net_close_window,
 308     otk::Property::atoms.net_wm_name,
 309     otk::Property::atoms.net_wm_visible_name,
 310     otk::Property::atoms.net_wm_icon_name,
 311     otk::Property::atoms.net_wm_visible_icon_name,
 312 /*
 313     otk::Property::atoms.net_wm_desktop,
 314 */
 315     otk::Property::atoms.net_wm_strut,
 316     otk::Property::atoms.net_wm_window_type,
 317     otk::Property::atoms.net_wm_window_type_desktop,
 318     otk::Property::atoms.net_wm_window_type_dock,
 319     otk::Property::atoms.net_wm_window_type_toolbar,
 320     otk::Property::atoms.net_wm_window_type_menu,
 321     otk::Property::atoms.net_wm_window_type_utility,
 322     otk::Property::atoms.net_wm_window_type_splash,
 323     otk::Property::atoms.net_wm_window_type_dialog,
 324     otk::Property::atoms.net_wm_window_type_normal,
 325 /*
 326     otk::Property::atoms.net_wm_moveresize,
 327     otk::Property::atoms.net_wm_moveresize_size_topleft,
 328     otk::Property::atoms.net_wm_moveresize_size_topright,
 329     otk::Property::atoms.net_wm_moveresize_size_bottomleft,
 330     otk::Property::atoms.net_wm_moveresize_size_bottomright,
 331     otk::Property::atoms.net_wm_moveresize_move,
 332 */
 333     otk::Property::atoms.net_wm_allowed_actions,
 334     otk::Property::atoms.net_wm_action_move,
 335     otk::Property::atoms.net_wm_action_resize,
 336     otk::Property::atoms.net_wm_action_minimize,
 337     otk::Property::atoms.net_wm_action_shade,
 338 /*    otk::Property::atoms.net_wm_action_stick,*/
 339     otk::Property::atoms.net_wm_action_maximize_horz,
 340     otk::Property::atoms.net_wm_action_maximize_vert,
 341     otk::Property::atoms.net_wm_action_fullscreen,
 342     otk::Property::atoms.net_wm_action_change_desktop,
 343     otk::Property::atoms.net_wm_action_close,
 344
 345     otk::Property::atoms.net_wm_state,
 346     otk::Property::atoms.net_wm_state_modal,
 347     otk::Property::atoms.net_wm_state_maximized_vert,
 348     otk::Property::atoms.net_wm_state_maximized_horz,
 349     otk::Property::atoms.net_wm_state_shaded,
 350     otk::Property::atoms.net_wm_state_skip_taskbar,
 351     otk::Property::atoms.net_wm_state_skip_pager,
 352     otk::Property::atoms.net_wm_state_hidden,
 353     otk::Property::atoms.net_wm_state_fullscreen,
 354     otk::Property::atoms.net_wm_state_above,
 355     otk::Property::atoms.net_wm_state_below,
 356   };
 357   const int num_supported = sizeof(supported)/sizeof(Atom);
 358
 359   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_supported,
 360                      otk::Property::atoms.atom, supported, num_supported);
 361 }
 362
 363
 364 void Screen::changeClientList()
 365 {
 366   Window *windows;
 367   unsigned int size = clients.size();
 368
 369   // create an array of the window ids
 370   if (size > 0) {
 371     Window *win_it;
 372
 373     windows = new Window[size];
 374     win_it = windows;
 375     ClientList::const_iterator it = clients.begin();
 376     const ClientList::const_iterator end = clients.end();
 377     for (; it != end; ++it, ++win_it)
 378       *win_it = (*it)->window();
 379   } else
 380     windows = (Window*) 0;
 381
 382   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_client_list,
 383                      otk::Property::atoms.window, windows, size);
 384
 385   if (size)
 386     delete [] windows;
 387
 388   changeStackingList();
 389 }
 390
 391
 392 void Screen::changeStackingList()
 393 {
 394   Window *windows;
 395   unsigned int size = _stacking.size();
 396
 397   assert(size == clients.size()); // just making sure.. :)
 398
 399
 400   // create an array of the window ids (from bottom to top, reverse order!)
 401   if (size > 0) {
 402     Window *win_it;
 403
 404     windows = new Window[size];
 405     win_it = windows;
 406     ClientList::const_reverse_iterator it = _stacking.rbegin();
 407     const ClientList::const_reverse_iterator end = _stacking.rend();
 408     for (; it != end; ++it, ++win_it)
 409       *win_it = (*it)->window();
 410   } else
 411     windows = (Window*) 0;
 412
 413   otk::Property::set(_info->rootWindow(),
 414                      otk::Property::atoms.net_client_list_stacking,
 415                      otk::Property::atoms.window, windows, size);
 416
 417   if (size)
 418     delete [] windows;
 419 }
 420
 421
 422 void Screen::changeWorkArea() {
 423   unsigned long *dims = new unsigned long[4 * _num_desktops];
 424   for (long i = 0; i < _num_desktops; ++i) {
 425     dims[(i * 4) + 0] = _area.x();
 426     dims[(i * 4) + 1] = _area.y();
 427     dims[(i * 4) + 2] = _area.width();
 428     dims[(i * 4) + 3] = _area.height();
 429   }
 430   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_workarea,
 431                      otk::Property::atoms.cardinal, dims, 4 * _num_desktops);
 432   delete [] dims;
 433 }
 434
 435
 436 void Screen::manageWindow(Window window)
 437 {
 438   Client *client = 0;
 439   XWMHints *wmhint;
 440   XSetWindowAttributes attrib_set;
 441   XEvent e;
 442   XWindowAttributes attrib;
 443
 444   otk::display->grab();
 445
 446   // check if it has already been unmapped by the time we started mapping
 447   // the grab does a sync so we don't have to here
 448   if (XCheckTypedWindowEvent(**otk::display, window, DestroyNotify, &e) ||
 449       XCheckTypedWindowEvent(**otk::display, window, UnmapNotify, &e)) {
 450     XPutBackEvent(**otk::display, &e);
 451
 452     otk::display->ungrab();
 453     return; // don't manage it
 454   }
 455
 456   if (!XGetWindowAttributes(**otk::display, window, &attrib) ||
 457       attrib.override_redirect) {
 458     otk::display->ungrab();
 459     return; // don't manage it
 460   }
 461
 462   // is the window a docking app
 463   if ((wmhint = XGetWMHints(**otk::display, window))) {
 464     if ((wmhint->flags & StateHint) &&
 465         wmhint->initial_state == WithdrawnState) {
 466       //slit->addClient(w); // XXX: make dock apps work!
 467
 468       otk::display->ungrab();
 469       XFree(wmhint);
 470       return;
 471     }
 472     XFree(wmhint);
 473   }
 474
 475   // choose the events we want to receive on the CLIENT window
 476   attrib_set.event_mask = Client::event_mask;
 477   attrib_set.do_not_propagate_mask = Client::no_propagate_mask;
 478   XChangeWindowAttributes(**otk::display, window,
 479                           CWEventMask|CWDontPropagate, &attrib_set);
 480
 481   // create the Client class, which gets all of the hints on the window
 482   client = new Client(_number, window);
 483   // register for events
 484   openbox->registerHandler(window, client);
 485   // add to the wm's map
 486   openbox->addClient(window, client);
 487
 488   // we dont want a border on the client
 489   client->toggleClientBorder(false);
 490
 491   // specify that if we exit, the window should not be destroyed and should be
 492   // reparented back to root automatically
 493   XChangeSaveSet(**otk::display, window, SetModeInsert);
 494
 495   // create the decoration frame for the client window
 496   client->frame = new Frame(client);
 497   // register the plate for events (map req's)
 498   // this involves removing itself from the handler list first, since it is
 499   // auto added to the list, being a widget. we won't get any events on the
 500   // plate except for events for the client (SubstructureRedirectMask)
 501   openbox->clearHandler(client->frame->plate());
 502   openbox->registerHandler(client->frame->plate(), client);
 503
 504   // add to the wm's map
 505   Window *w = client->frame->allWindows();
 506   for (unsigned int i = 0; w[i]; ++i)
 507     openbox->addClient(w[i], client);
 508   delete [] w;
 509
 510   // reparent the client to the frame
 511   client->frame->grabClient();
 512
 513   if (openbox->state() != Openbox::State_Starting) {
 514     // position the window intelligenty .. hopefully :)
 515     // call the python PLACEWINDOW binding
 516     EventData data(_number, client, EventAction::PlaceWindow, 0);
 517     openbox->bindings()->fireEvent(&data);
 518   }
 519
 520   EventData ddata(_number, client, EventAction::DisplayingWindow, 0);
 521   openbox->bindings()->fireEvent(&ddata);
 522
 523   // if on the current desktop.. (or all desktops)
 524   if (client->desktop() == _desktop ||
 525       client->desktop() == (signed)0xffffffff) {
 526     client->frame->show();
 527   }
 528
 529   client->applyStartupState();
 530
 531   otk::display->ungrab();
 532
 533   // add to the screen's list
 534   clients.push_back(client);
 535   // once the client is in the list, update our strut to include the new
 536   // client's (it is good that this happens after window placement!)
 537   updateStrut();
 538   // this puts into the stacking order, then raises it
 539   _stacking.push_back(client);
 540   raiseWindow(client);
 541   // update the root properties
 542   changeClientList();
 543
 544   openbox->bindings()->grabButtons(true, client);
 545
 546   EventData ndata(_number, client, EventAction::NewWindow, 0);
 547   openbox->bindings()->fireEvent(&ndata);
 548
 549 #ifdef DEBUG
 550   printf("Managed window 0x%lx frame 0x%lx\n",
 551          window, client->frame->window());
 552 #endif
 553 }
 554
 555
 556 void Screen::unmanageWindow(Client *client)
 557 {
 558   Frame *frame = client->frame;
 559
 560   // call the python CLOSEWINDOW binding
 561   EventData data(_number, client, EventAction::CloseWindow, 0);
 562   openbox->bindings()->fireEvent(&data);
 563
 564   openbox->bindings()->grabButtons(false, client);
 565
 566   // remove from the wm's map
 567   openbox->removeClient(client->window());
 568   Window *w = frame->allWindows();
 569   for (unsigned int i = 0; w[i]; ++i)
 570     openbox->addClient(w[i], client);
 571   delete [] w;
 572   // unregister for handling events
 573   openbox->clearHandler(client->window());
 574
 575   // remove the window from our save set
 576   XChangeSaveSet(**otk::display, client->window(), SetModeDelete);
 577
 578   // we dont want events no more
 579   XSelectInput(**otk::display, client->window(), NoEventMask);
 580
 581   frame->hide();
 582
 583   // give the client its border back
 584   client->toggleClientBorder(true);
 585
 586   // reparent the window out of the frame
 587   frame->releaseClient();
 588
 589 #ifdef DEBUG
 590   Window framewin = client->frame->window();
 591 #endif
 592   delete client->frame;
 593   client->frame = 0;
 594
 595   // remove from the stacking order
 596   _stacking.remove(client);
 597
 598   // remove from the screen's list
 599   clients.remove(client);
 600
 601   // once the client is out of the list, update our strut to remove it's
 602   // influence
 603   updateStrut();
 604
 605   // unset modal before dropping our focus
 606   client->setModal(false);
 607
 608   // unfocus the client (calls the focus callbacks)
 609   client->unfocus();
 610
 611 #ifdef DEBUG
 612   printf("Unmanaged window 0x%lx frame 0x%lx\n", client->window(), framewin);
 613 #endif
 614
 615   delete client;
 616
 617   // update the root properties
 618   changeClientList();
 619 }
 620
 621 void Screen::lowerWindow(Client *client)
 622 {
 623   Window wins[2];  // only ever restack 2 windows.
 624
 625   assert(!_stacking.empty()); // this would be bad
 626
 627   ClientList::iterator it = --_stacking.end();
 628   const ClientList::iterator end = _stacking.begin();
 629
 630   if (client->modal() && client->transientFor()) {
 631     // don't let a modal window lower below its transient_for
 632     it = std::find(_stacking.begin(), _stacking.end(), client->transientFor());
 633     assert(it != _stacking.end());
 634
 635     wins[0] = (it == _stacking.begin() ? _focuswindow :
 636                ((*(--ClientList::const_iterator(it)))->frame->window()));
 637     wins[1] = client->frame->window();
 638     if (wins[0] == wins[1]) return; // already right above the window
 639
 640     _stacking.remove(client);
 641     _stacking.insert(it, client);
 642   } else {
 643     for (; it != end && (*it)->layer() < client->layer(); --it);
 644     if (*it == client) return;          // already the bottom, return
 645
 646     wins[0] = (*it)->frame->window();
 647     wins[1] = client->frame->window();
 648
 649     _stacking.remove(client);
 650     _stacking.insert(++it, client);
 651   }
 652
 653   XRestackWindows(**otk::display, wins, 2);
 654   changeStackingList();
 655 }
 656
 657 void Screen::raiseWindow(Client *client)
 658 {
 659   Window wins[2];  // only ever restack 2 windows.
 660
 661   assert(!_stacking.empty()); // this would be bad
 662
 663   // remove the client before looking so we can't run into ourselves
 664   _stacking.remove(client);
 665
 666   ClientList::iterator it = _stacking.begin();
 667   const ClientList::iterator end = _stacking.end();
 668
 669   // the stacking list is from highest to lowest
 670   for (; it != end && (*it)->layer() > client->layer(); ++it);
 671
 672   /*
 673     if our new position is the top, we want to stack under the _focuswindow
 674     otherwise, we want to stack under the previous window in the stack.
 675   */
 676   wins[0] = (it == _stacking.begin() ? _focuswindow :
 677              ((*(--ClientList::const_iterator(it)))->frame->window()));
 678   wins[1] = client->frame->window();
 679
 680   _stacking.insert(it, client);
 681
 682   XRestackWindows(**otk::display, wins, 2);
 683
 684   // if the window has a modal child, then raise it after us to put it on top
 685   if (client->modalChild())
 686     raiseWindow(client->modalChild());
 687   else
 688     changeStackingList(); // no need to do this twice!
 689 }
 690
 691 void Screen::changeDesktop(long desktop)
 692 {
 693   if (!(desktop >= 0 && desktop < _num_desktops)) return;
 694
 695   printf("Moving to desktop %ld\n", desktop);
 696
 697   long old = _desktop;
 698
 699   _desktop = desktop;
 700   otk::Property::set(_info->rootWindow(),
 701                      otk::Property::atoms.net_current_desktop,
 702                      otk::Property::atoms.cardinal, _desktop);
 703
 704   if (old == _desktop) return;
 705
 706   ClientList::iterator it, end = clients.end();
 707   for (it = clients.begin(); it != end; ++it) {
 708     if ((*it)->desktop() == old) {
 709       (*it)->frame->hide();
 710     } else if ((*it)->desktop() == _desktop) {
 711       (*it)->frame->show();
 712     }
 713   }
 714
 715   // force the callbacks to fire
 716   if (!openbox->focusedClient())
 717     openbox->setFocusedClient(0);
 718 }
 719
 720 void Screen::changeNumDesktops(long num)
 721 {
 722   assert(num > 0);
 723
 724   if (!(num > 0)) return;
 725
 726   // move windows on desktops that will no longer exist!
 727   ClientList::iterator it, end = clients.end();
 728   for (it = clients.begin(); it != end; ++it) {
 729     int d = (*it)->desktop();
 730     if (d >= num && !(d == (signed) 0xffffffff ||
 731                       d == Client::ICONIC_DESKTOP)) {
 732       XEvent ce;
 733       ce.xclient.type = ClientMessage;
 734       ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 735       ce.xclient.display = **otk::display;
 736       ce.xclient.window = (*it)->window();
 737       ce.xclient.format = 32;
 738       ce.xclient.data.l[0] = num - 1;
 739       XSendEvent(**otk::display, _info->rootWindow(), False,
 740                  SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 741     }
 742   }
 743
 744   _num_desktops = num;
 745   otk::Property::set(_info->rootWindow(),
 746                      otk::Property::atoms.net_number_of_desktops,
 747                      otk::Property::atoms.cardinal, _num_desktops);
 748
 749   // set the viewport hint
 750   unsigned long *viewport = new unsigned long[_num_desktops * 2];
 751   memset(viewport, 0, sizeof(unsigned long) * _num_desktops * 2);
 752   otk::Property::set(_info->rootWindow(),
 753                      otk::Property::atoms.net_desktop_viewport,
 754                      otk::Property::atoms.cardinal,
 755                      viewport, _num_desktops * 2);
 756   delete [] viewport;
 757
 758   // update the work area hint
 759   changeWorkArea();
 760
 761   // change our desktop if we're on one that no longer exists!
 762   if (_desktop >= num)
 763     changeDesktop(num - 1);
 764 }
 765
 766
 767 void Screen::updateDesktopNames()
 768 {
 769   unsigned long num = (unsigned) -1;
 770
 771   if (!otk::Property::get(_info->rootWindow(),
 772                           otk::Property::atoms.net_desktop_names,
 773                           otk::Property::utf8, &num, &_desktop_names))
 774     _desktop_names.clear();
 775   while ((long)_desktop_names.size() < _num_desktops)
 776     _desktop_names.push_back("Unnamed");
 777 }
 778
 779
 780 void Screen::setDesktopName(long i, const otk::ustring &name)
 781 {
 782   assert(i >= 0);
 783
 784   if (i >= _num_desktops) return;
 785
 786   otk::Property::StringVect newnames = _desktop_names;
 787   newnames[i] = name;
 788   otk::Property::set(_info->rootWindow(),
 789                      otk::Property::atoms.net_desktop_names,
 790                      otk::Property::utf8, newnames);
 791 }
 792
 793
 794 void Screen::installColormap(bool install) const
 795 {
 796   if (install)
 797     XInstallColormap(**otk::display, _info->colormap());
 798   else
 799     XUninstallColormap(**otk::display, _info->colormap());
 800 }
 801
 802
 803 void Screen::propertyHandler(const XPropertyEvent &e)
 804 {
 805   otk::EventHandler::propertyHandler(e);
 806
 807   // compress changes to a single property into a single change
 808   XEvent ce;
 809   while (XCheckTypedWindowEvent(**otk::display, _info->rootWindow(),
 810                                 e.type, &ce)) {
 811     // XXX: it would be nice to compress ALL changes to a property, not just
 812     //      changes in a row without other props between.
 813     if (ce.xproperty.atom != e.atom) {
 814       XPutBackEvent(**otk::display, &ce);
 815       break;
 816     }
 817   }
 818
 819   if (e.atom == otk::Property::atoms.net_desktop_names)
 820     updateDesktopNames();
 821 }
 822
 823
 824 void Screen::clientMessageHandler(const XClientMessageEvent &e)
 825 {
 826   otk::EventHandler::clientMessageHandler(e);
 827
 828   if (e.format != 32) return;
 829
 830   if (e.message_type == otk::Property::atoms.net_current_desktop) {
 831     changeDesktop(e.data.l[0]);
 832   } else if (e.message_type == otk::Property::atoms.net_number_of_desktops) {
 833     changeNumDesktops(e.data.l[0]);
 834   }
 835 }
 836
 837
 838 void Screen::mapRequestHandler(const XMapRequestEvent &e)
 839 {
 840   otk::EventHandler::mapRequestHandler(e);
 841
 842 #ifdef    DEBUG
 843   printf("MapRequest for 0x%lx\n", e.window);
 844 #endif // DEBUG
 845
 846   Client *c = openbox->findClient(e.window);
 847   if (c) {
 848 #ifdef DEBUG
 849     printf("DEBUG: MAP REQUEST CAUGHT IN SCREEN. IGNORED.\n");
 850 #endif
 851   } else
 852     manageWindow(e.window);
 853 }
 854
 855 }