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
 143
 144 OBScreen::~OBScreen()
 145 {
 146   if (! _managed) return;
 147
 148   XSelectInput(otk::OBDisplay::display, _info->rootWindow(), NoEventMask);
 149
 150   // unmanage all windows
 151   while (!clients.empty())
 152     unmanageWindow(clients.front());
 153
 154   XDestroyWindow(otk::OBDisplay::display, _focuswindow);
 155   XDestroyWindow(otk::OBDisplay::display, _supportwindow);
 156
 157   delete _image_control;
 158 }
 159
 160
 161 void OBScreen::manageExisting()
 162 {
 163   unsigned int i, j, nchild;
 164   Window r, p, *children;
 165   XQueryTree(otk::OBDisplay::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::OBDisplay::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::OBDisplay::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 OBScreen::updateStrut()
 210 {
 211   _strut.left = _strut.right = _strut.top = _strut.bottom = 0;
 212
 213   OBClient::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 OBScreen::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     // XXX: re-maximize windows
 266
 267   changeWorkArea();
 268 }
 269
 270
 271 void OBScreen::changeSupportedAtoms()
 272 {
 273   // create the netwm support window
 274   _supportwindow = XCreateSimpleWindow(otk::OBDisplay::display,
 275                                        _info->rootWindow(),
 276                                        0, 0, 1, 1, 0, 0, 0);
 277   assert(_supportwindow != None);
 278
 279   // set supporting window
 280   Openbox::instance->property()->set(_info->rootWindow(),
 281                                      otk::OBProperty::net_supporting_wm_check,
 282                                      otk::OBProperty::Atom_Window,
 283                                      _supportwindow);
 284
 285   //set properties on the supporting window
 286   Openbox::instance->property()->set(_supportwindow,
 287                                      otk::OBProperty::net_wm_name,
 288                                      otk::OBProperty::utf8,
 289                                      "Openbox");
 290   Openbox::instance->property()->set(_supportwindow,
 291                                      otk::OBProperty::net_supporting_wm_check,
 292                                      otk::OBProperty::Atom_Window,
 293                                      _supportwindow);
 294
 295
 296   Atom supported[] = {
 297       otk::OBProperty::net_current_desktop,
 298       otk::OBProperty::net_number_of_desktops,
 299       otk::OBProperty::net_desktop_geometry,
 300       otk::OBProperty::net_desktop_viewport,
 301       otk::OBProperty::net_active_window,
 302       otk::OBProperty::net_workarea,
 303       otk::OBProperty::net_client_list,
 304       otk::OBProperty::net_client_list_stacking,
 305       otk::OBProperty::net_desktop_names,
 306       otk::OBProperty::net_close_window,
 307       otk::OBProperty::net_wm_name,
 308       otk::OBProperty::net_wm_visible_name,
 309       otk::OBProperty::net_wm_icon_name,
 310       otk::OBProperty::net_wm_visible_icon_name,
 311 /*
 312       otk::OBProperty::net_wm_desktop,
 313 */
 314       otk::OBProperty::net_wm_strut,
 315       otk::OBProperty::net_wm_window_type,
 316       otk::OBProperty::net_wm_window_type_desktop,
 317       otk::OBProperty::net_wm_window_type_dock,
 318       otk::OBProperty::net_wm_window_type_toolbar,
 319       otk::OBProperty::net_wm_window_type_menu,
 320       otk::OBProperty::net_wm_window_type_utility,
 321       otk::OBProperty::net_wm_window_type_splash,
 322       otk::OBProperty::net_wm_window_type_dialog,
 323       otk::OBProperty::net_wm_window_type_normal,
 324 /*
 325       otk::OBProperty::net_wm_moveresize,
 326       otk::OBProperty::net_wm_moveresize_size_topleft,
 327       otk::OBProperty::net_wm_moveresize_size_topright,
 328       otk::OBProperty::net_wm_moveresize_size_bottomleft,
 329       otk::OBProperty::net_wm_moveresize_size_bottomright,
 330       otk::OBProperty::net_wm_moveresize_move,
 331 */
 332 /*
 333       otk::OBProperty::net_wm_allowed_actions,
 334       otk::OBProperty::net_wm_action_move,
 335       otk::OBProperty::net_wm_action_resize,
 336       otk::OBProperty::net_wm_action_shade,
 337       otk::OBProperty::net_wm_action_maximize_horz,
 338       otk::OBProperty::net_wm_action_maximize_vert,
 339       otk::OBProperty::net_wm_action_change_desktop,
 340       otk::OBProperty::net_wm_action_close,
 341 */
 342       otk::OBProperty::net_wm_state,
 343       otk::OBProperty::net_wm_state_modal,
 344       otk::OBProperty::net_wm_state_maximized_vert,
 345       otk::OBProperty::net_wm_state_maximized_horz,
 346       otk::OBProperty::net_wm_state_shaded,
 347       otk::OBProperty::net_wm_state_skip_taskbar,
 348       otk::OBProperty::net_wm_state_skip_pager,
 349       otk::OBProperty::net_wm_state_hidden,
 350       otk::OBProperty::net_wm_state_fullscreen,
 351       otk::OBProperty::net_wm_state_above,
 352       otk::OBProperty::net_wm_state_below,
 353     };
 354   const int num_supported = sizeof(supported)/sizeof(Atom);
 355
 356   // convert to the atom values
 357   for (int i = 0; i < num_supported; ++i)
 358     supported[i] =
 359       Openbox::instance->property()->atom((otk::OBProperty::Atoms)supported[i]);
 360
 361   Openbox::instance->property()->set(_info->rootWindow(),
 362                                      otk::OBProperty::net_supported,
 363                                      otk::OBProperty::Atom_Atom,
 364                                      supported, num_supported);
 365 }
 366
 367
 368 void OBScreen::changeClientList()
 369 {
 370   Window *windows;
 371   unsigned int size = clients.size();
 372
 373   // create an array of the window ids
 374   if (size > 0) {
 375     Window *win_it;
 376
 377     windows = new Window[size];
 378     win_it = windows;
 379     OBClient::List::const_iterator it = clients.begin();
 380     const OBClient::List::const_iterator end = clients.end();
 381     for (; it != end; ++it, ++win_it)
 382       *win_it = (*it)->window();
 383   } else
 384     windows = (Window*) 0;
 385
 386   Openbox::instance->property()->set(_info->rootWindow(),
 387                                      otk::OBProperty::net_client_list,
 388                                      otk::OBProperty::Atom_Window,
 389                                      windows, size);
 390
 391   if (size)
 392     delete [] windows;
 393
 394   changeStackingList();
 395 }
 396
 397
 398 void OBScreen::changeStackingList()
 399 {
 400   Window *windows;
 401   unsigned int size = _stacking.size();
 402
 403   assert(size == clients.size()); // just making sure.. :)
 404
 405
 406   // create an array of the window ids
 407   if (size > 0) {
 408     Window *win_it;
 409
 410     windows = new Window[size];
 411     win_it = windows;
 412     OBClient::List::const_iterator it = _stacking.begin();
 413     const OBClient::List::const_iterator end = _stacking.end();
 414     for (; it != end; ++it, ++win_it)
 415       *win_it = (*it)->window();
 416   } else
 417     windows = (Window*) 0;
 418
 419   Openbox::instance->property()->set(_info->rootWindow(),
 420                                      otk::OBProperty::net_client_list_stacking,
 421                                      otk::OBProperty::Atom_Window,
 422                                      windows, size);
 423
 424   if (size)
 425     delete [] windows;
 426 }
 427
 428
 429 void OBScreen::changeWorkArea() {
 430   unsigned long *dims = new unsigned long[4 * _num_desktops];
 431   for (long i = 0; i < _num_desktops; ++i) {
 432     // XXX: this could be different for each workspace
 433     dims[(i * 4) + 0] = _area.x();
 434     dims[(i * 4) + 1] = _area.y();
 435     dims[(i * 4) + 2] = _area.width();
 436     dims[(i * 4) + 3] = _area.height();
 437   }
 438   Openbox::instance->property()->set(_info->rootWindow(),
 439                                      otk::OBProperty::net_workarea,
 440                                      otk::OBProperty::Atom_Cardinal,
 441                                      dims, 4 * _num_desktops);
 442   delete [] dims;
 443 }
 444
 445
 446 void OBScreen::manageWindow(Window window)
 447 {
 448   OBClient *client = 0;
 449   XWMHints *wmhint;
 450   XSetWindowAttributes attrib_set;
 451
 452   // is the window a docking app
 453   if ((wmhint = XGetWMHints(otk::OBDisplay::display, window))) {
 454     if ((wmhint->flags & StateHint) &&
 455         wmhint->initial_state == WithdrawnState) {
 456       //slit->addClient(w); // XXX: make dock apps work!
 457       XFree(wmhint);
 458       return;
 459     }
 460     XFree(wmhint);
 461   }
 462
 463   otk::OBDisplay::grab();
 464
 465   // choose the events we want to receive on the CLIENT window
 466   attrib_set.event_mask = OBClient::event_mask;
 467   attrib_set.do_not_propagate_mask = OBClient::no_propagate_mask;
 468   XChangeWindowAttributes(otk::OBDisplay::display, window,
 469                           CWEventMask|CWDontPropagate, &attrib_set);
 470
 471   // create the OBClient class, which gets all of the hints on the window
 472   client = new OBClient(_number, window);
 473   // register for events
 474   Openbox::instance->registerHandler(window, client);
 475   // add to the wm's map
 476   Openbox::instance->addClient(window, client);
 477
 478   // we dont want a border on the client
 479   client->toggleClientBorder(false);
 480
 481   // specify that if we exit, the window should not be destroyed and should be
 482   // reparented back to root automatically
 483   XChangeSaveSet(otk::OBDisplay::display, window, SetModeInsert);
 484
 485   if (!client->positionRequested()) {
 486     // XXX: position the window intelligenty
 487   }
 488
 489   // create the decoration frame for the client window
 490   client->frame = new OBFrame(client, &_style);
 491
 492   // add to the wm's map
 493   Openbox::instance->addClient(client->frame->window(), client);
 494   Openbox::instance->addClient(client->frame->plate(), client);
 495   Openbox::instance->addClient(client->frame->titlebar(), client);
 496   Openbox::instance->addClient(client->frame->label(), client);
 497   Openbox::instance->addClient(client->frame->button_max(), client);
 498   Openbox::instance->addClient(client->frame->button_iconify(), client);
 499   Openbox::instance->addClient(client->frame->button_stick(), client);
 500   Openbox::instance->addClient(client->frame->button_close(), client);
 501   Openbox::instance->addClient(client->frame->handle(), client);
 502   Openbox::instance->addClient(client->frame->grip_left(), client);
 503   Openbox::instance->addClient(client->frame->grip_right(), client);
 504
 505   // XXX: if on the current desktop..
 506   client->frame->show();
 507
 508   // XXX: handle any requested states such as maximized
 509
 510   otk::OBDisplay::ungrab();
 511
 512   // add to the screen's list
 513   clients.push_back(client);
 514   // this puts into the stacking order, then raises it
 515   _stacking.push_back(client);
 516   restack(true, client);
 517   // update the root properties
 518   changeClientList();
 519
 520   Openbox::instance->bindings()->grabButtons(true, client);
 521
 522   // XXX: make this optional or more intelligent
 523   if (client->normal())
 524     client->focus();
 525
 526   // call the python NEWWINDOW binding
 527   EventData *data = new_event_data(window, EventNewWindow, 0);
 528   Openbox::instance->bindings()->fireEvent(data);
 529   Py_DECREF((PyObject*)data);
 530
 531   printf("Managed window 0x%lx\n", window);
 532 }
 533
 534
 535 void OBScreen::unmanageWindow(OBClient *client)
 536 {
 537   OBFrame *frame = client->frame;
 538
 539   // call the python CLOSEWINDOW binding
 540   EventData *data = new_event_data(client->window(), EventCloseWindow, 0);
 541   Openbox::instance->bindings()->fireEvent(data);
 542   Py_DECREF((PyObject*)data);
 543
 544   Openbox::instance->bindings()->grabButtons(false, client);
 545
 546   // remove from the stacking order
 547   _stacking.remove(client);
 548
 549   // pass around focus if this window was focused XXX do this better!
 550   if (Openbox::instance->focusedClient() == client) {
 551     OBClient *newfocus = 0;
 552     OBClient::List::iterator it, end = _stacking.end();
 553     for (it = _stacking.begin(); it != end; ++it)
 554       if ((*it)->normal() && (*it)->focus()) {
 555         newfocus = *it;
 556         break;
 557       }
 558     if (!newfocus)
 559       client->unfocus();
 560   }
 561
 562   // remove from the wm's map
 563   Openbox::instance->removeClient(client->window());
 564   Openbox::instance->removeClient(frame->window());
 565   Openbox::instance->removeClient(frame->plate());
 566   Openbox::instance->removeClient(frame->titlebar());
 567   Openbox::instance->removeClient(frame->label());
 568   Openbox::instance->removeClient(frame->button_max());
 569   Openbox::instance->removeClient(frame->button_iconify());
 570   Openbox::instance->removeClient(frame->button_stick());
 571   Openbox::instance->removeClient(frame->button_close());
 572   Openbox::instance->removeClient(frame->handle());
 573   Openbox::instance->removeClient(frame->grip_left());
 574   Openbox::instance->removeClient(frame->grip_right());
 575   // unregister for handling events
 576   Openbox::instance->clearHandler(client->window());
 577
 578   // remove the window from our save set
 579   XChangeSaveSet(otk::OBDisplay::display, client->window(), SetModeDelete);
 580
 581   // we dont want events no more
 582   XSelectInput(otk::OBDisplay::display, client->window(), NoEventMask);
 583
 584   frame->hide();
 585
 586   // give the client its border back
 587   client->toggleClientBorder(true);
 588
 589   delete client->frame;
 590   client->frame = 0;
 591
 592   // remove from the screen's list
 593   clients.remove(client);
 594   delete client;
 595
 596   // update the root properties
 597   changeClientList();
 598 }
 599
 600 void OBScreen::restack(bool raise, OBClient *client)
 601 {
 602   const int layer = client->layer();
 603   std::vector<Window> wins;
 604
 605   _stacking.remove(client);
 606
 607   // the stacking list is from highest to lowest
 608
 609   OBClient::List::iterator it = _stacking.begin(), end = _stacking.end();
 610   // insert the windows above this window
 611   for (; it != end; ++it) {
 612     if ((*it)->layer() < layer || (raise && (*it)->layer() == layer))
 613       break;
 614     wins.push_back((*it)->frame->window());
 615   }
 616   // insert our client
 617   wins.push_back(client->frame->window());
 618   _stacking.insert(it, client);
 619   // insert the remaining below this window
 620   for (; it != end; ++it)
 621     wins.push_back((*it)->frame->window());
 622
 623   XRestackWindows(otk::OBDisplay::display, &wins[0], wins.size());
 624   changeStackingList();
 625 }
 626
 627 void OBScreen::changeDesktop(long desktop)
 628 {
 629   assert(desktop >= 0 && desktop < _num_desktops);
 630
 631   if (!(desktop >= 0 && desktop < _num_desktops)) return;
 632
 633   long old = _desktop;
 634
 635   _desktop = desktop;
 636   Openbox::instance->property()->set(_info->rootWindow(),
 637                                      otk::OBProperty::net_current_desktop,
 638                                      otk::OBProperty::Atom_Cardinal,
 639                                      _desktop);
 640
 641   OBClient::List::iterator it, end = clients.end();
 642   for (it = clients.begin(); it != end; ++it) {
 643     if ((*it)->desktop() == old) {
 644       // XXX hide
 645     } else if ((*it)->desktop() == _desktop) {
 646       // XXX show
 647     }
 648   }
 649 }
 650
 651 void OBScreen::changeNumDesktops(long num)
 652 {
 653   assert(num > 0);
 654
 655   if (!(num > 0)) return;
 656
 657   _num_desktops = num;
 658   Openbox::instance->property()->set(_info->rootWindow(),
 659                                      otk::OBProperty::net_number_of_desktops,
 660                                      otk::OBProperty::Atom_Cardinal,
 661                                      _num_desktops);
 662
 663   // set the viewport hint
 664   unsigned long *viewport = new unsigned long[_num_desktops * 2];
 665   memset(viewport, 0, sizeof(unsigned long) * _num_desktops * 2);
 666   Openbox::instance->property()->set(_info->rootWindow(),
 667                                      otk::OBProperty::net_desktop_viewport,
 668                                      otk::OBProperty::Atom_Cardinal,
 669                                      viewport, _num_desktops * 2);
 670   delete [] viewport;
 671
 672   // update the work area hint
 673   changeWorkArea();
 674 }
 675
 676
 677 void OBScreen::updateDesktopNames()
 678 {
 679   const otk::OBProperty *property = Openbox::instance->property();
 680
 681   unsigned long num = (unsigned) -1;
 682
 683   if (!property->get(_info->rootWindow(),
 684                      otk::OBProperty::net_desktop_names,
 685                      otk::OBProperty::utf8, &num, &_desktop_names))
 686     _desktop_names.clear();
 687   while ((long)_desktop_names.size() < _num_desktops)
 688     _desktop_names.push_back("Unnamed");
 689 }
 690
 691
 692 void OBScreen::setDesktopName(long i, const std::string &name)
 693 {
 694   assert(i >= 0);
 695
 696   if (i >= _num_desktops) return;
 697
 698   const otk::OBProperty *property = Openbox::instance->property();
 699
 700   otk::OBProperty::StringVect newnames = _desktop_names;
 701   newnames[i] = name;
 702   property->set(_info->rootWindow(), otk::OBProperty::net_desktop_names,
 703                 otk::OBProperty::utf8, newnames);
 704 }
 705
 706
 707 void OBScreen::propertyHandler(const XPropertyEvent &e)
 708 {
 709   otk::OtkEventHandler::propertyHandler(e);
 710
 711   const otk::OBProperty *property = Openbox::instance->property();
 712
 713   // compress changes to a single property into a single change
 714   XEvent ce;
 715   while (XCheckTypedEvent(otk::OBDisplay::display, e.type, &ce)) {
 716     // XXX: it would be nice to compress ALL changes to a property, not just
 717     //      changes in a row without other props between.
 718     if (ce.xproperty.atom != e.atom) {
 719       XPutBackEvent(otk::OBDisplay::display, &ce);
 720       break;
 721     }
 722   }
 723
 724   if (e.atom == property->atom(otk::OBProperty::net_desktop_names))
 725     updateDesktopNames();
 726 }
 727
 728
 729 void OBScreen::clientMessageHandler(const XClientMessageEvent &e)
 730 {
 731   otk::OtkEventHandler::clientMessageHandler(e);
 732
 733   if (e.format != 32) return;
 734
 735   const otk::OBProperty *property = Openbox::instance->property();
 736
 737   if (e.message_type == property->atom(otk::OBProperty::net_current_desktop)) {
 738     changeDesktop(e.data.l[0]);
 739   } else if (e.message_type ==
 740              property->atom(otk::OBProperty::net_number_of_desktops)) {
 741     changeNumDesktops(e.data.l[0]);
 742   }
 743   // XXX: so many client messages to handle here! ..or not.. they go to clients
 744 }
 745
 746
 747 void OBScreen::mapRequestHandler(const XMapRequestEvent &e)
 748 {
 749   otk::OtkEventHandler::mapRequestHandler(e);
 750
 751 #ifdef    DEBUG
 752   printf("MapRequest for 0x%lx\n", e.window);
 753 #endif // DEBUG
 754
 755   /*
 756     MapRequest events come here even after the window exists instead of going
 757     right to the client window, because of how they are sent and their struct
 758     layout.
 759   */
 760   OBClient *c = Openbox::instance->findClient(e.window);
 761
 762   if (c) {
 763     if (c->shaded())
 764       c->shade(false);
 765     // XXX: uniconify the window
 766     c->focus();
 767   } else
 768     manageWindow(e.window);
 769 }
 770 }