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   otk::OBDisplay::grab();
 463
 464   // is the window a docking app
 465   if ((wmhint = XGetWMHints(otk::OBDisplay::display, window))) {
 466     if ((wmhint->flags & StateHint) &&
 467         wmhint->initial_state == WithdrawnState) {
 468       //slit->addClient(w); // XXX: make dock apps work!
 469       otk::OBDisplay::ungrab();
 470
 471       XFree(wmhint);
 472       return;
 473     }
 474     XFree(wmhint);
 475   }
 476
 477   // choose the events we want to receive on the CLIENT window
 478   attrib_set.event_mask = OBClient::event_mask;
 479   attrib_set.do_not_propagate_mask = OBClient::no_propagate_mask;
 480   XChangeWindowAttributes(otk::OBDisplay::display, window,
 481                           CWEventMask|CWDontPropagate, &attrib_set);
 482
 483   // create the OBClient class, which gets all of the hints on the window
 484   client = new OBClient(_number, window);
 485   // register for events
 486   Openbox::instance->registerHandler(window, client);
 487   // add to the wm's map
 488   Openbox::instance->addClient(window, client);
 489
 490   // we dont want a border on the client
 491   client->toggleClientBorder(false);
 492
 493   // specify that if we exit, the window should not be destroyed and should be
 494   // reparented back to root automatically
 495   XChangeSaveSet(otk::OBDisplay::display, window, SetModeInsert);
 496
 497   if (!(Openbox::instance->state() == Openbox::State_Starting ||
 498         client->positionRequested())) {
 499     // position the window intelligenty .. hopefully :)
 500     // call the python PLACEWINDOW binding
 501     EventData *data = new_event_data(_number, window, EventPlaceWindow, 0);
 502     Openbox::instance->bindings()->fireEvent(data);
 503     Py_DECREF((PyObject*)data);
 504   }
 505
 506   // create the decoration frame for the client window
 507   client->frame = new OBFrame(client, &_style);
 508
 509   // add to the wm's map
 510   Openbox::instance->addClient(client->frame->window(), client);
 511   Openbox::instance->addClient(client->frame->plate(), client);
 512   Openbox::instance->addClient(client->frame->titlebar(), client);
 513   Openbox::instance->addClient(client->frame->label(), client);
 514   Openbox::instance->addClient(client->frame->button_max(), client);
 515   Openbox::instance->addClient(client->frame->button_iconify(), client);
 516   Openbox::instance->addClient(client->frame->button_stick(), client);
 517   Openbox::instance->addClient(client->frame->button_close(), client);
 518   Openbox::instance->addClient(client->frame->handle(), client);
 519   Openbox::instance->addClient(client->frame->grip_left(), client);
 520   Openbox::instance->addClient(client->frame->grip_right(), client);
 521
 522   // if on the current desktop.. (or all desktops)
 523   if (client->desktop() == _desktop ||
 524       client->desktop() == (signed)0xffffffff) {
 525     client->frame->show();
 526   }
 527
 528   // XXX: handle any requested states such as maximized
 529
 530   otk::OBDisplay::ungrab();
 531
 532   // add to the screen's list
 533   clients.push_back(client);
 534   // this puts into the stacking order, then raises it
 535   _stacking.push_back(client);
 536   restack(true, client);
 537   // update the root properties
 538   changeClientList();
 539
 540   Openbox::instance->bindings()->grabButtons(true, client);
 541
 542   // call the python NEWWINDOW binding
 543   EventData *data = new_event_data(_number, window, EventNewWindow, 0);
 544   Openbox::instance->bindings()->fireEvent(data);
 545   Py_DECREF((PyObject*)data);
 546
 547   printf("Managed window 0x%lx\n", window);
 548 }
 549
 550
 551 void OBScreen::unmanageWindow(OBClient *client)
 552 {
 553   OBFrame *frame = client->frame;
 554
 555   // call the python CLOSEWINDOW binding
 556   EventData *data = new_event_data(_number, client->window(),
 557                                    EventCloseWindow, 0);
 558   Openbox::instance->bindings()->fireEvent(data);
 559   Py_DECREF((PyObject*)data);
 560
 561   Openbox::instance->bindings()->grabButtons(false, client);
 562
 563   // remove from the wm's map
 564   Openbox::instance->removeClient(client->window());
 565   Openbox::instance->removeClient(frame->window());
 566   Openbox::instance->removeClient(frame->plate());
 567   Openbox::instance->removeClient(frame->titlebar());
 568   Openbox::instance->removeClient(frame->label());
 569   Openbox::instance->removeClient(frame->button_max());
 570   Openbox::instance->removeClient(frame->button_iconify());
 571   Openbox::instance->removeClient(frame->button_stick());
 572   Openbox::instance->removeClient(frame->button_close());
 573   Openbox::instance->removeClient(frame->handle());
 574   Openbox::instance->removeClient(frame->grip_left());
 575   Openbox::instance->removeClient(frame->grip_right());
 576   // unregister for handling events
 577   Openbox::instance->clearHandler(client->window());
 578
 579   // remove the window from our save set
 580   XChangeSaveSet(otk::OBDisplay::display, client->window(), SetModeDelete);
 581
 582   // we dont want events no more
 583   XSelectInput(otk::OBDisplay::display, client->window(), NoEventMask);
 584
 585   frame->hide();
 586
 587   // give the client its border back
 588   client->toggleClientBorder(true);
 589
 590   delete client->frame;
 591   client->frame = 0;
 592
 593   // remove from the stacking order
 594   _stacking.remove(client);
 595
 596   // remove from the screen's list
 597   clients.remove(client);
 598
 599   // unfocus the client (calls the focus callbacks)
 600   client->unfocus();
 601
 602   delete client;
 603
 604   // update the root properties
 605   changeClientList();
 606 }
 607
 608 void OBScreen::restack(bool raise, OBClient *client)
 609 {
 610   const int layer = client->layer();
 611   std::vector<Window> wins;
 612
 613   _stacking.remove(client);
 614
 615   // the stacking list is from highest to lowest
 616
 617   OBClient::List::iterator it = _stacking.begin(), end = _stacking.end();
 618   // insert the windows above this window
 619   for (; it != end; ++it) {
 620     if ((*it)->layer() < layer || (raise && (*it)->layer() == layer))
 621       break;
 622     wins.push_back((*it)->frame->window());
 623   }
 624   // insert our client
 625   wins.push_back(client->frame->window());
 626   _stacking.insert(it, client);
 627   // insert the remaining below this window
 628   for (; it != end; ++it)
 629     wins.push_back((*it)->frame->window());
 630
 631   XRestackWindows(otk::OBDisplay::display, &wins[0], wins.size());
 632   changeStackingList();
 633 }
 634
 635 void OBScreen::changeDesktop(long desktop)
 636 {
 637   assert(desktop >= 0 && desktop < _num_desktops);
 638
 639   if (!(desktop >= 0 && desktop < _num_desktops)) return;
 640
 641   printf("Moving to desktop %ld\n", desktop);
 642
 643   long old = _desktop;
 644
 645   _desktop = desktop;
 646   Openbox::instance->property()->set(_info->rootWindow(),
 647                                      otk::OBProperty::net_current_desktop,
 648                                      otk::OBProperty::Atom_Cardinal,
 649                                      _desktop);
 650
 651   if (old == _desktop) return;
 652
 653   OBClient::List::iterator it, end = clients.end();
 654   for (it = clients.begin(); it != end; ++it) {
 655     if ((*it)->desktop() == old) {
 656       (*it)->frame->hide();
 657     } else if ((*it)->desktop() == _desktop) {
 658       (*it)->frame->show();
 659     }
 660   }
 661
 662   // force the callbacks to fire
 663   if (!Openbox::instance->focusedClient())
 664     Openbox::instance->setFocusedClient(0);
 665 }
 666
 667 void OBScreen::changeNumDesktops(long num)
 668 {
 669   assert(num > 0);
 670
 671   if (!(num > 0)) return;
 672
 673   // XXX: move windows on desktops that will no longer exist!
 674
 675   _num_desktops = num;
 676   Openbox::instance->property()->set(_info->rootWindow(),
 677                                      otk::OBProperty::net_number_of_desktops,
 678                                      otk::OBProperty::Atom_Cardinal,
 679                                      _num_desktops);
 680
 681   // set the viewport hint
 682   unsigned long *viewport = new unsigned long[_num_desktops * 2];
 683   memset(viewport, 0, sizeof(unsigned long) * _num_desktops * 2);
 684   Openbox::instance->property()->set(_info->rootWindow(),
 685                                      otk::OBProperty::net_desktop_viewport,
 686                                      otk::OBProperty::Atom_Cardinal,
 687                                      viewport, _num_desktops * 2);
 688   delete [] viewport;
 689
 690   // update the work area hint
 691   changeWorkArea();
 692 }
 693
 694
 695 void OBScreen::updateDesktopNames()
 696 {
 697   const otk::OBProperty *property = Openbox::instance->property();
 698
 699   unsigned long num = (unsigned) -1;
 700
 701   if (!property->get(_info->rootWindow(),
 702                      otk::OBProperty::net_desktop_names,
 703                      otk::OBProperty::utf8, &num, &_desktop_names))
 704     _desktop_names.clear();
 705   while ((long)_desktop_names.size() < _num_desktops)
 706     _desktop_names.push_back("Unnamed");
 707 }
 708
 709
 710 void OBScreen::setDesktopName(long i, const std::string &name)
 711 {
 712   assert(i >= 0);
 713
 714   if (i >= _num_desktops) return;
 715
 716   const otk::OBProperty *property = Openbox::instance->property();
 717
 718   otk::OBProperty::StringVect newnames = _desktop_names;
 719   newnames[i] = name;
 720   property->set(_info->rootWindow(), otk::OBProperty::net_desktop_names,
 721                 otk::OBProperty::utf8, newnames);
 722 }
 723
 724
 725 void OBScreen::propertyHandler(const XPropertyEvent &e)
 726 {
 727   otk::OtkEventHandler::propertyHandler(e);
 728
 729   const otk::OBProperty *property = Openbox::instance->property();
 730
 731   // compress changes to a single property into a single change
 732   XEvent ce;
 733   while (XCheckTypedEvent(otk::OBDisplay::display, e.type, &ce)) {
 734     // XXX: it would be nice to compress ALL changes to a property, not just
 735     //      changes in a row without other props between.
 736     if (ce.xproperty.atom != e.atom) {
 737       XPutBackEvent(otk::OBDisplay::display, &ce);
 738       break;
 739     }
 740   }
 741
 742   if (e.atom == property->atom(otk::OBProperty::net_desktop_names))
 743     updateDesktopNames();
 744 }
 745
 746
 747 void OBScreen::clientMessageHandler(const XClientMessageEvent &e)
 748 {
 749   otk::OtkEventHandler::clientMessageHandler(e);
 750
 751   if (e.format != 32) return;
 752
 753   const otk::OBProperty *property = Openbox::instance->property();
 754
 755   if (e.message_type == property->atom(otk::OBProperty::net_current_desktop)) {
 756     changeDesktop(e.data.l[0]);
 757   } else if (e.message_type ==
 758              property->atom(otk::OBProperty::net_number_of_desktops)) {
 759     changeNumDesktops(e.data.l[0]);
 760   }
 761   // XXX: so many client messages to handle here! ..or not.. they go to clients
 762 }
 763
 764
 765 void OBScreen::mapRequestHandler(const XMapRequestEvent &e)
 766 {
 767   otk::OtkEventHandler::mapRequestHandler(e);
 768
 769 #ifdef    DEBUG
 770   printf("MapRequest for 0x%lx\n", e.window);
 771 #endif // DEBUG
 772
 773   /*
 774     MapRequest events come here even after the window exists instead of going
 775     right to the client window, because of how they are sent and their struct
 776     layout.
 777   */
 778   OBClient *c = Openbox::instance->findClient(e.window);
 779
 780   if (c) {
 781     if (c->shaded())
 782       c->shade(false);
 783     // XXX: uniconify the window
 784     c->focus();
 785   } else
 786     manageWindow(e.window);
 787 }
 788 }