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 (!(Openbox::instance->state() == Openbox::State_Starting ||
 496         client->positionRequested())) {
 497     // position the window intelligenty .. hopefully :)
 498     // call the python PLACEWINDOW binding
 499     EventData *data = new_event_data(_number, window, EventPlaceWindow, 0);
 500     Openbox::instance->bindings()->fireEvent(data);
 501     Py_DECREF((PyObject*)data);
 502   }
 503
 504   // create the decoration frame for the client window
 505   client->frame = new OBFrame(client, &_style);
 506
 507   // add to the wm's map
 508   Openbox::instance->addClient(client->frame->window(), client);
 509   Openbox::instance->addClient(client->frame->plate(), client);
 510   Openbox::instance->addClient(client->frame->titlebar(), client);
 511   Openbox::instance->addClient(client->frame->label(), client);
 512   Openbox::instance->addClient(client->frame->button_max(), client);
 513   Openbox::instance->addClient(client->frame->button_iconify(), client);
 514   Openbox::instance->addClient(client->frame->button_stick(), client);
 515   Openbox::instance->addClient(client->frame->button_close(), client);
 516   Openbox::instance->addClient(client->frame->handle(), client);
 517   Openbox::instance->addClient(client->frame->grip_left(), client);
 518   Openbox::instance->addClient(client->frame->grip_right(), client);
 519
 520   bool shown = false;
 521
 522   // if on the current desktop.. (or all desktops)
 523   if (client->desktop() == _desktop ||
 524       client->desktop() == (signed)0xffffffff) {
 525     shown = true;
 526     client->frame->show();
 527   }
 528
 529   // XXX: handle any requested states such as maximized
 530
 531   otk::OBDisplay::ungrab();
 532
 533   // add to the screen's list
 534   clients.push_back(client);
 535   // this puts into the stacking order, then raises it
 536   _stacking.push_back(client);
 537   restack(true, client);
 538   // update the root properties
 539   changeClientList();
 540
 541   Openbox::instance->bindings()->grabButtons(true, client);
 542
 543   // call the python NEWWINDOW binding
 544   EventData *data = new_event_data(_number, window, EventNewWindow, 0);
 545   Openbox::instance->bindings()->fireEvent(data);
 546   Py_DECREF((PyObject*)data);
 547
 548   printf("Managed window 0x%lx\n", window);
 549 }
 550
 551
 552 void OBScreen::unmanageWindow(OBClient *client)
 553 {
 554   OBFrame *frame = client->frame;
 555
 556   // call the python CLOSEWINDOW binding
 557   EventData *data = new_event_data(_number, client->window(),
 558                                    EventCloseWindow, 0);
 559   Openbox::instance->bindings()->fireEvent(data);
 560   Py_DECREF((PyObject*)data);
 561
 562   Openbox::instance->bindings()->grabButtons(false, client);
 563
 564   // remove from the wm's map
 565   Openbox::instance->removeClient(client->window());
 566   Openbox::instance->removeClient(frame->window());
 567   Openbox::instance->removeClient(frame->plate());
 568   Openbox::instance->removeClient(frame->titlebar());
 569   Openbox::instance->removeClient(frame->label());
 570   Openbox::instance->removeClient(frame->button_max());
 571   Openbox::instance->removeClient(frame->button_iconify());
 572   Openbox::instance->removeClient(frame->button_stick());
 573   Openbox::instance->removeClient(frame->button_close());
 574   Openbox::instance->removeClient(frame->handle());
 575   Openbox::instance->removeClient(frame->grip_left());
 576   Openbox::instance->removeClient(frame->grip_right());
 577   // unregister for handling events
 578   Openbox::instance->clearHandler(client->window());
 579
 580   // remove the window from our save set
 581   XChangeSaveSet(otk::OBDisplay::display, client->window(), SetModeDelete);
 582
 583   // we dont want events no more
 584   XSelectInput(otk::OBDisplay::display, client->window(), NoEventMask);
 585
 586   frame->hide();
 587
 588   // give the client its border back
 589   client->toggleClientBorder(true);
 590
 591   delete client->frame;
 592   client->frame = 0;
 593
 594   // remove from the stacking order
 595   _stacking.remove(client);
 596
 597   // remove from the screen's list
 598   clients.remove(client);
 599
 600   // unfocus the client (calls the focus callbacks)
 601   client->unfocus();
 602
 603   delete client;
 604
 605   // update the root properties
 606   changeClientList();
 607 }
 608
 609 void OBScreen::restack(bool raise, OBClient *client)
 610 {
 611   const int layer = client->layer();
 612   std::vector<Window> wins;
 613
 614   _stacking.remove(client);
 615
 616   // the stacking list is from highest to lowest
 617
 618   OBClient::List::iterator it = _stacking.begin(), end = _stacking.end();
 619   // insert the windows above this window
 620   for (; it != end; ++it) {
 621     if ((*it)->layer() < layer || (raise && (*it)->layer() == layer))
 622       break;
 623     wins.push_back((*it)->frame->window());
 624   }
 625   // insert our client
 626   wins.push_back(client->frame->window());
 627   _stacking.insert(it, client);
 628   // insert the remaining below this window
 629   for (; it != end; ++it)
 630     wins.push_back((*it)->frame->window());
 631
 632   XRestackWindows(otk::OBDisplay::display, &wins[0], wins.size());
 633   changeStackingList();
 634 }
 635
 636 void OBScreen::changeDesktop(long desktop)
 637 {
 638   assert(desktop >= 0 && desktop < _num_desktops);
 639
 640   if (!(desktop >= 0 && desktop < _num_desktops)) return;
 641
 642   printf("Moving to desktop %ld\n", desktop);
 643
 644   long old = _desktop;
 645
 646   _desktop = desktop;
 647   Openbox::instance->property()->set(_info->rootWindow(),
 648                                      otk::OBProperty::net_current_desktop,
 649                                      otk::OBProperty::Atom_Cardinal,
 650                                      _desktop);
 651
 652   if (old == _desktop) return;
 653
 654   OBClient::List::iterator it, end = clients.end();
 655   for (it = clients.begin(); it != end; ++it) {
 656     if ((*it)->desktop() == old) {
 657       (*it)->frame->hide();
 658     } else if ((*it)->desktop() == _desktop) {
 659       (*it)->frame->show();
 660     }
 661   }
 662
 663   // force the callbacks to fire
 664   if (!Openbox::instance->focusedClient())
 665     Openbox::instance->setFocusedClient(0);
 666 }
 667
 668 void OBScreen::changeNumDesktops(long num)
 669 {
 670   assert(num > 0);
 671
 672   if (!(num > 0)) return;
 673
 674   // XXX: move windows on desktops that will no longer exist!
 675
 676   _num_desktops = num;
 677   Openbox::instance->property()->set(_info->rootWindow(),
 678                                      otk::OBProperty::net_number_of_desktops,
 679                                      otk::OBProperty::Atom_Cardinal,
 680                                      _num_desktops);
 681
 682   // set the viewport hint
 683   unsigned long *viewport = new unsigned long[_num_desktops * 2];
 684   memset(viewport, 0, sizeof(unsigned long) * _num_desktops * 2);
 685   Openbox::instance->property()->set(_info->rootWindow(),
 686                                      otk::OBProperty::net_desktop_viewport,
 687                                      otk::OBProperty::Atom_Cardinal,
 688                                      viewport, _num_desktops * 2);
 689   delete [] viewport;
 690
 691   // update the work area hint
 692   changeWorkArea();
 693 }
 694
 695
 696 void OBScreen::updateDesktopNames()
 697 {
 698   const otk::OBProperty *property = Openbox::instance->property();
 699
 700   unsigned long num = (unsigned) -1;
 701
 702   if (!property->get(_info->rootWindow(),
 703                      otk::OBProperty::net_desktop_names,
 704                      otk::OBProperty::utf8, &num, &_desktop_names))
 705     _desktop_names.clear();
 706   while ((long)_desktop_names.size() < _num_desktops)
 707     _desktop_names.push_back("Unnamed");
 708 }
 709
 710
 711 void OBScreen::setDesktopName(long i, const std::string &name)
 712 {
 713   assert(i >= 0);
 714
 715   if (i >= _num_desktops) return;
 716
 717   const otk::OBProperty *property = Openbox::instance->property();
 718
 719   otk::OBProperty::StringVect newnames = _desktop_names;
 720   newnames[i] = name;
 721   property->set(_info->rootWindow(), otk::OBProperty::net_desktop_names,
 722                 otk::OBProperty::utf8, newnames);
 723 }
 724
 725
 726 void OBScreen::propertyHandler(const XPropertyEvent &e)
 727 {
 728   otk::OtkEventHandler::propertyHandler(e);
 729
 730   const otk::OBProperty *property = Openbox::instance->property();
 731
 732   // compress changes to a single property into a single change
 733   XEvent ce;
 734   while (XCheckTypedEvent(otk::OBDisplay::display, e.type, &ce)) {
 735     // XXX: it would be nice to compress ALL changes to a property, not just
 736     //      changes in a row without other props between.
 737     if (ce.xproperty.atom != e.atom) {
 738       XPutBackEvent(otk::OBDisplay::display, &ce);
 739       break;
 740     }
 741   }
 742
 743   if (e.atom == property->atom(otk::OBProperty::net_desktop_names))
 744     updateDesktopNames();
 745 }
 746
 747
 748 void OBScreen::clientMessageHandler(const XClientMessageEvent &e)
 749 {
 750   otk::OtkEventHandler::clientMessageHandler(e);
 751
 752   if (e.format != 32) return;
 753
 754   const otk::OBProperty *property = Openbox::instance->property();
 755
 756   if (e.message_type == property->atom(otk::OBProperty::net_current_desktop)) {
 757     changeDesktop(e.data.l[0]);
 758   } else if (e.message_type ==
 759              property->atom(otk::OBProperty::net_number_of_desktops)) {
 760     changeNumDesktops(e.data.l[0]);
 761   }
 762   // XXX: so many client messages to handle here! ..or not.. they go to clients
 763 }
 764
 765
 766 void OBScreen::mapRequestHandler(const XMapRequestEvent &e)
 767 {
 768   otk::OtkEventHandler::mapRequestHandler(e);
 769
 770 #ifdef    DEBUG
 771   printf("MapRequest for 0x%lx\n", e.window);
 772 #endif // DEBUG
 773
 774   /*
 775     MapRequest events come here even after the window exists instead of going
 776     right to the client window, because of how they are sent and their struct
 777     layout.
 778   */
 779   OBClient *c = Openbox::instance->findClient(e.window);
 780
 781   if (c) {
 782     if (c->shaded())
 783       c->shade(false);
 784     // XXX: uniconify the window
 785     c->focus();
 786   } else
 787     manageWindow(e.window);
 788 }
 789 }