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