src/screen.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #include "config.h"
   4
   5 extern "C" {
   6 #ifdef    HAVE_UNISTD_H
   7 #  include <sys/types.h>
   8 #  include <unistd.h>
   9 #endif // HAVE_UNISTD_H
  10
  11 #include "gettext.h"
  12 #define _(str) gettext(str)
  13 }
  14
  15 #include "screen.hh"
  16 #include "client.hh"
  17 #include "openbox.hh"
  18 #include "frame.hh"
  19 #include "bindings.hh"
  20 #include "python.hh"
  21 #include "otk/display.hh"
  22 #include "otk/property.hh"
  23
  24 #include <vector>
  25 #include <algorithm>
  26 #include <cstdio>
  27 #include <cstring>
  28
  29 static bool running;
  30 static int anotherWMRunning(Display *display, XErrorEvent *) {
  31   printf(_("Another window manager already running on display %s.\n"),
  32          DisplayString(display));
  33   running = true;
  34   return -1;
  35 }
  36
  37
  38 namespace ob {
  39
  40
  41 Screen::Screen(int screen)
  42   : _number(screen)
  43 {
  44   assert(screen >= 0); assert(screen < ScreenCount(**otk::display));
  45   _info = otk::display->screenInfo(screen);
  46
  47   ::running = false;
  48   XErrorHandler old = XSetErrorHandler(::anotherWMRunning);
  49   XSelectInput(**otk::display, _info->rootWindow(),
  50                Screen::event_mask);
  51   XSync(**otk::display, false);
  52   XSetErrorHandler(old);
  53
  54   _managed = !::running;
  55   if (! _managed) return; // was unable to manage the screen
  56
  57 #ifdef DEBUG
  58   printf(_("Managing screen %d: visual 0x%lx, depth %d\n"),
  59          _number, XVisualIDFromVisual(_info->visual()), _info->depth());
  60 #endif
  61
  62   otk::Property::set(_info->rootWindow(), otk::Property::atoms.openbox_pid,
  63                      otk::Property::atoms.cardinal, (unsigned long) getpid());
  64
  65   // set the mouse cursor for the root window (the default cursor)
  66   XDefineCursor(**otk::display, _info->rootWindow(),
  67                 openbox->cursors().session);
  68
  69   // XXX: initialize the screen's style
  70   /*
  71   otk::ustring stylepath;
  72   python_get_string("THEME", &stylepath);
  73   otk::Configuration sconfig(false);
  74   sconfig.setFile(otk::expandTilde(stylepath.c_str()));
  75   if (!sconfig.load()) {
  76     sconfig.setFile(otk::expandTilde(DEFAULTSTYLE));
  77     if (!sconfig.load()) {
  78       printf(_("Unable to load default style: %s. Aborting.\n"), DEFAULTSTYLE);
  79       ::exit(1);
  80     }
  81   }
  82   _style.load(sconfig);
  83   */
  84   otk::display->renderControl(_number)->
  85     drawRoot(*otk::RenderStyle::style(_number)->rootColor());
  86
  87   // set up notification of netwm support
  88   changeSupportedAtoms();
  89
  90   // Set the netwm properties for geometry
  91   unsigned long geometry[] = { _info->size().width(),
  92                                _info->size().height() };
  93   otk::Property::set(_info->rootWindow(),
  94                      otk::Property::atoms.net_desktop_geometry,
  95                      otk::Property::atoms.cardinal, geometry, 2);
  96
  97   // Set the net_desktop_names property
  98   std::vector<otk::ustring> names;
  99   python_get_stringlist("DESKTOP_NAMES", &names);
 100   otk::Property::set(_info->rootWindow(),
 101                      otk::Property::atoms.net_desktop_names,
 102                      otk::Property::utf8, names);
 103   // the above set() will cause the updateDesktopNames to fire right away so
 104   // we have a list of desktop names
 105
 106   _desktop = 0;
 107
 108   if (!python_get_long("NUMBER_OF_DESKTOPS", &_num_desktops))
 109     _num_desktops = 1;
 110   changeNumDesktops(_num_desktops); // set the hint
 111
 112   changeDesktop(0); // set the hint
 113
 114   // create the window which gets focus when no clients get it
 115   XSetWindowAttributes attr;
 116   attr.override_redirect = true;
 117   _focuswindow = XCreateWindow(**otk::display, _info->rootWindow(),
 118                                -100, -100, 1, 1, 0, 0, InputOnly,
 119                                _info->visual(), CWOverrideRedirect, &attr);
 120   XMapRaised(**otk::display, _focuswindow);
 121
 122   // these may be further updated if any pre-existing windows are found in
 123   // the manageExising() function
 124   changeClientList();  // initialize the client lists, which will be empty
 125
 126   // register this class as the event handler for the root window
 127   openbox->registerHandler(_info->rootWindow(), this);
 128
 129   // call the python Startup callbacks
 130   EventData data(_number, 0, EventAction::Startup, 0);
 131   openbox->bindings()->fireEvent(&data);
 132 }
 133
 134
 135 Screen::~Screen()
 136 {
 137   if (! _managed) return;
 138
 139   XSelectInput(**otk::display, _info->rootWindow(), NoEventMask);
 140
 141   // unmanage all windows
 142   while (!clients.empty())
 143     unmanageWindow(clients.front());
 144
 145   // call the python Shutdown callbacks
 146   EventData data(_number, 0, EventAction::Shutdown, 0);
 147   openbox->bindings()->fireEvent(&data);
 148
 149   XDestroyWindow(**otk::display, _focuswindow);
 150   XDestroyWindow(**otk::display, _supportwindow);
 151 }
 152
 153
 154 void Screen::manageExisting()
 155 {
 156   unsigned int i, j, nchild;
 157   Window r, p, *children;
 158   XQueryTree(**otk::display, _info->rootWindow(), &r, &p,
 159              &children, &nchild);
 160
 161   // preen the window list of all icon windows... for better dockapp support
 162   for (i = 0; i < nchild; i++) {
 163     if (children[i] == None) continue;
 164
 165     XWMHints *wmhints = XGetWMHints(**otk::display,
 166                                     children[i]);
 167
 168     if (wmhints) {
 169       if ((wmhints->flags & IconWindowHint) &&
 170           (wmhints->icon_window != children[i])) {
 171         for (j = 0; j < nchild; j++) {
 172           if (children[j] == wmhints->icon_window) {
 173             children[j] = None;
 174             break;
 175           }
 176         }
 177       }
 178
 179       XFree(wmhints);
 180     }
 181   }
 182
 183   // manage shown windows
 184   for (i = 0; i < nchild; ++i) {
 185     if (children[i] == None)
 186       continue;
 187
 188     XWindowAttributes attrib;
 189     if (XGetWindowAttributes(**otk::display, children[i], &attrib)) {
 190       if (attrib.override_redirect) continue;
 191
 192       if (attrib.map_state != IsUnmapped) {
 193         manageWindow(children[i]);
 194       }
 195     }
 196   }
 197
 198   XFree(children);
 199 }
 200
 201
 202 void Screen::updateStruts()
 203 {
 204   struct ApplyStrut {
 205     void operator()(otk::Strut &self, const otk::Strut &other) {
 206       self.left = std::max(self.left, other.left);
 207       self.right = std::max(self.right, other.right);
 208       self.top = std::max(self.top, other.top);
 209       self.bottom = std::max(self.bottom, other.bottom);
 210     }
 211   } apply;
 212
 213   StrutList::iterator sit, send = _struts.end();
 214   // reset them all
 215   for (sit = _struts.begin(); sit != send; ++sit)
 216     sit->left = sit->right = sit->top = sit->bottom = 0;
 217
 218   ClientList::const_iterator it, end = clients.end();
 219   for (it = clients.begin(); it != end; ++it) {
 220     long desk = (*it)->desktop();
 221     const otk::Strut &s = (*it)->strut();
 222
 223     if (desk == (signed) 0xffffffff)
 224       for (unsigned int i = 0, e = _struts.size(); i < e; ++i)
 225         apply(_struts[i], s);
 226     else if ((unsigned)desk < _struts.size())
 227       apply(_struts[desk], s);
 228     else if (desk == Client::ICONIC_DESKTOP)
 229       continue; // skip for the 'all desktops' strut
 230     else
 231       assert(false); // invalid desktop otherwise..
 232     // apply to the 'all desktops' strut
 233     apply(_struts.back(), s);
 234   }
 235   changeWorkArea();
 236 }
 237
 238
 239 void Screen::changeWorkArea()
 240 {
 241   unsigned long *dims = new unsigned long[4 * _num_desktops];
 242   for (long i = 0; i < _num_desktops + 1; ++i) {
 243     otk::Rect old_area = _area[i];
 244 /*
 245 #ifdef    XINERAMA
 246   // reset to the full areas
 247   if (isXineramaActive())
 248     xineramaUsableArea = getXineramaAreas();
 249 #endif // XINERAMA
 250 */
 251
 252     _area[i] = otk::Rect(_struts[i].left, _struts[i].top,
 253                          _info->size().width() - (_struts[i].left +
 254                                                   _struts[i].right),
 255                          _info->size().height() - (_struts[i].top +
 256                                                    _struts[i].bottom));
 257
 258 /*
 259 #ifdef    XINERAMA
 260   if (isXineramaActive()) {
 261     // keep each of the ximerama-defined areas inside the strut
 262     RectList::iterator xit, xend = xineramaUsableArea.end();
 263     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 264       if (xit->x() < usableArea.x()) {
 265         xit->setX(usableArea.x());
 266         xit->setWidth(xit->width() - usableArea.x());
 267       }
 268       if (xit->y() < usableArea.y()) {
 269         xit->setY(usableArea.y());
 270         xit->setHeight(xit->height() - usableArea.y());
 271       }
 272       if (xit->x() + xit->width() > usableArea.width())
 273         xit->setWidth(usableArea.width() - xit->x());
 274       if (xit->y() + xit->height() > usableArea.height())
 275         xit->setHeight(usableArea.height() - xit->y());
 276     }
 277   }
 278 #endif // XINERAMA
 279 */
 280     if (old_area != _area[i]) {
 281       // the area has changed, adjust all the maximized windows
 282       ClientList::iterator it, end = clients.end();
 283       for (it = clients.begin(); it != end; ++it)
 284         if (i < _num_desktops) {
 285           if ((*it)->desktop() == i)
 286             (*it)->remaximize();
 287         } else {
 288           // the 'all desktops' size
 289           if ((*it)->desktop() == (signed) 0xffffffff)
 290             (*it)->remaximize();
 291         }
 292     }
 293
 294     // don't set these for the 'all desktops' area
 295     if (i < _num_desktops) {
 296       dims[(i * 4) + 0] = _area[i].x();
 297       dims[(i * 4) + 1] = _area[i].y();
 298       dims[(i * 4) + 2] = _area[i].width();
 299       dims[(i * 4) + 3] = _area[i].height();
 300     }
 301   }
 302   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_workarea,
 303                      otk::Property::atoms.cardinal, dims, 4 * _num_desktops);
 304   delete [] dims;
 305 }
 306
 307
 308 void Screen::changeSupportedAtoms()
 309 {
 310   // create the netwm support window
 311   _supportwindow = XCreateSimpleWindow(**otk::display,
 312                                        _info->rootWindow(),
 313                                        0, 0, 1, 1, 0, 0, 0);
 314
 315   // set supporting window
 316   otk::Property::set(_info->rootWindow(),
 317                      otk::Property::atoms.net_supporting_wm_check,
 318                      otk::Property::atoms.window, _supportwindow);
 319
 320   //set properties on the supporting window
 321   otk::Property::set(_supportwindow, otk::Property::atoms.net_wm_name,
 322                      otk::Property::utf8, "Openbox");
 323   otk::Property::set(_supportwindow,
 324                      otk::Property::atoms.net_supporting_wm_check,
 325                      otk::Property::atoms.window, _supportwindow);
 326
 327
 328   Atom supported[] = {
 329     otk::Property::atoms.net_current_desktop,
 330     otk::Property::atoms.net_number_of_desktops,
 331     otk::Property::atoms.net_desktop_geometry,
 332     otk::Property::atoms.net_desktop_viewport,
 333     otk::Property::atoms.net_active_window,
 334     otk::Property::atoms.net_workarea,
 335     otk::Property::atoms.net_client_list,
 336     otk::Property::atoms.net_client_list_stacking,
 337     otk::Property::atoms.net_desktop_names,
 338     otk::Property::atoms.net_close_window,
 339     otk::Property::atoms.net_wm_name,
 340     otk::Property::atoms.net_wm_visible_name,
 341     otk::Property::atoms.net_wm_icon_name,
 342     otk::Property::atoms.net_wm_visible_icon_name,
 343 /*
 344     otk::Property::atoms.net_wm_desktop,
 345 */
 346     otk::Property::atoms.net_wm_strut,
 347     otk::Property::atoms.net_wm_window_type,
 348     otk::Property::atoms.net_wm_window_type_desktop,
 349     otk::Property::atoms.net_wm_window_type_dock,
 350     otk::Property::atoms.net_wm_window_type_toolbar,
 351     otk::Property::atoms.net_wm_window_type_menu,
 352     otk::Property::atoms.net_wm_window_type_utility,
 353     otk::Property::atoms.net_wm_window_type_splash,
 354     otk::Property::atoms.net_wm_window_type_dialog,
 355     otk::Property::atoms.net_wm_window_type_normal,
 356 /*
 357     otk::Property::atoms.net_wm_moveresize,
 358     otk::Property::atoms.net_wm_moveresize_size_topleft,
 359     otk::Property::atoms.net_wm_moveresize_size_topright,
 360     otk::Property::atoms.net_wm_moveresize_size_bottomleft,
 361     otk::Property::atoms.net_wm_moveresize_size_bottomright,
 362     otk::Property::atoms.net_wm_moveresize_move,
 363 */
 364     otk::Property::atoms.net_wm_allowed_actions,
 365     otk::Property::atoms.net_wm_action_move,
 366     otk::Property::atoms.net_wm_action_resize,
 367     otk::Property::atoms.net_wm_action_minimize,
 368     otk::Property::atoms.net_wm_action_shade,
 369 /*    otk::Property::atoms.net_wm_action_stick,*/
 370     otk::Property::atoms.net_wm_action_maximize_horz,
 371     otk::Property::atoms.net_wm_action_maximize_vert,
 372     otk::Property::atoms.net_wm_action_fullscreen,
 373     otk::Property::atoms.net_wm_action_change_desktop,
 374     otk::Property::atoms.net_wm_action_close,
 375
 376     otk::Property::atoms.net_wm_state,
 377     otk::Property::atoms.net_wm_state_modal,
 378     otk::Property::atoms.net_wm_state_maximized_vert,
 379     otk::Property::atoms.net_wm_state_maximized_horz,
 380     otk::Property::atoms.net_wm_state_shaded,
 381     otk::Property::atoms.net_wm_state_skip_taskbar,
 382     otk::Property::atoms.net_wm_state_skip_pager,
 383     otk::Property::atoms.net_wm_state_hidden,
 384     otk::Property::atoms.net_wm_state_fullscreen,
 385     otk::Property::atoms.net_wm_state_above,
 386     otk::Property::atoms.net_wm_state_below,
 387   };
 388   const int num_supported = sizeof(supported)/sizeof(Atom);
 389
 390   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_supported,
 391                      otk::Property::atoms.atom, supported, num_supported);
 392 }
 393
 394
 395 void Screen::changeClientList()
 396 {
 397   Window *windows;
 398   unsigned int size = clients.size();
 399
 400   // create an array of the window ids
 401   if (size > 0) {
 402     Window *win_it;
 403
 404     windows = new Window[size];
 405     win_it = windows;
 406     ClientList::const_iterator it = clients.begin();
 407     const ClientList::const_iterator end = clients.end();
 408     for (; it != end; ++it, ++win_it)
 409       *win_it = (*it)->window();
 410   } else
 411     windows = (Window*) 0;
 412
 413   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_client_list,
 414                      otk::Property::atoms.window, windows, size);
 415
 416   if (size)
 417     delete [] windows;
 418
 419   changeStackingList();
 420 }
 421
 422
 423 void Screen::changeStackingList()
 424 {
 425   Window *windows;
 426   unsigned int size = _stacking.size();
 427
 428   assert(size == clients.size()); // just making sure.. :)
 429
 430
 431   // create an array of the window ids (from bottom to top, reverse order!)
 432   if (size > 0) {
 433     Window *win_it;
 434
 435     windows = new Window[size];
 436     win_it = windows;
 437     ClientList::const_reverse_iterator it = _stacking.rbegin();
 438     const ClientList::const_reverse_iterator end = _stacking.rend();
 439     for (; it != end; ++it, ++win_it)
 440       *win_it = (*it)->window();
 441   } else
 442     windows = (Window*) 0;
 443
 444   otk::Property::set(_info->rootWindow(),
 445                      otk::Property::atoms.net_client_list_stacking,
 446                      otk::Property::atoms.window, windows, size);
 447
 448   if (size)
 449     delete [] windows;
 450 }
 451
 452
 453 void Screen::manageWindow(Window window)
 454 {
 455   Client *client = 0;
 456   XWMHints *wmhint;
 457   XSetWindowAttributes attrib_set;
 458   XEvent e;
 459   XWindowAttributes attrib;
 460
 461   otk::display->grab();
 462
 463   // check if it has already been unmapped by the time we started mapping
 464   // the grab does a sync so we don't have to here
 465   if (XCheckTypedWindowEvent(**otk::display, window, DestroyNotify, &e) ||
 466       XCheckTypedWindowEvent(**otk::display, window, UnmapNotify, &e)) {
 467     XPutBackEvent(**otk::display, &e);
 468
 469     otk::display->ungrab();
 470     return; // don't manage it
 471   }
 472
 473   if (!XGetWindowAttributes(**otk::display, window, &attrib) ||
 474       attrib.override_redirect) {
 475     otk::display->ungrab();
 476     return; // don't manage it
 477   }
 478
 479   // is the window a docking app
 480   if ((wmhint = XGetWMHints(**otk::display, window))) {
 481     if ((wmhint->flags & StateHint) &&
 482         wmhint->initial_state == WithdrawnState) {
 483       //slit->addClient(w); // XXX: make dock apps work!
 484
 485       otk::display->ungrab();
 486       XFree(wmhint);
 487       return;
 488     }
 489     XFree(wmhint);
 490   }
 491
 492   // choose the events we want to receive on the CLIENT window
 493   attrib_set.event_mask = Client::event_mask;
 494   attrib_set.do_not_propagate_mask = Client::no_propagate_mask;
 495   XChangeWindowAttributes(**otk::display, window,
 496                           CWEventMask|CWDontPropagate, &attrib_set);
 497
 498   // create the Client class, which gets all of the hints on the window
 499   client = new Client(_number, window);
 500   // register for events
 501   openbox->registerHandler(window, client);
 502   // add to the wm's map
 503   openbox->addClient(window, client);
 504
 505   // we dont want a border on the client
 506   client->toggleClientBorder(false);
 507
 508   // specify that if we exit, the window should not be destroyed and should be
 509   // reparented back to root automatically
 510   XChangeSaveSet(**otk::display, window, SetModeInsert);
 511
 512   // create the decoration frame for the client window
 513   client->frame = new Frame(client);
 514   // register the plate for events (map req's)
 515   // this involves removing itself from the handler list first, since it is
 516   // auto added to the list, being a widget. we won't get any events on the
 517   // plate except for events for the client (SubstructureRedirectMask)
 518   openbox->clearHandler(client->frame->plate());
 519   openbox->registerHandler(client->frame->plate(), client);
 520
 521   // add to the wm's map
 522   Window *w = client->frame->allWindows();
 523   for (unsigned int i = 0; w[i]; ++i)
 524     openbox->addClient(w[i], client);
 525   delete [] w;
 526
 527   // reparent the client to the frame
 528   client->frame->grabClient();
 529
 530   if (openbox->state() != Openbox::State_Starting) {
 531     // position the window intelligenty .. hopefully :)
 532     // call the python PLACEWINDOW binding
 533     EventData data(_number, client, EventAction::PlaceWindow, 0);
 534     openbox->bindings()->fireEvent(&data);
 535   }
 536
 537   EventData ddata(_number, client, EventAction::DisplayingWindow, 0);
 538   openbox->bindings()->fireEvent(&ddata);
 539
 540   // if on the current desktop.. (or all desktops)
 541   if (client->desktop() == _desktop ||
 542       client->desktop() == (signed)0xffffffff) {
 543     client->frame->show();
 544   }
 545
 546   client->applyStartupState();
 547
 548   otk::display->ungrab();
 549
 550   // add to the screen's list
 551   clients.push_back(client);
 552   // once the client is in the list, update our strut to include the new
 553   // client's (it is good that this happens after window placement!)
 554   updateStruts();
 555   // this puts into the stacking order, then raises it
 556   _stacking.push_back(client);
 557   raiseWindow(client);
 558   // update the root properties
 559   changeClientList();
 560
 561   openbox->bindings()->grabButtons(true, client);
 562
 563   EventData ndata(_number, client, EventAction::NewWindow, 0);
 564   openbox->bindings()->fireEvent(&ndata);
 565
 566 #ifdef DEBUG
 567   printf("Managed window 0x%lx frame 0x%lx\n",
 568          window, client->frame->window());
 569 #endif
 570 }
 571
 572
 573 void Screen::unmanageWindow(Client *client)
 574 {
 575   Frame *frame = client->frame;
 576
 577   // call the python CLOSEWINDOW binding
 578   EventData data(_number, client, EventAction::CloseWindow, 0);
 579   openbox->bindings()->fireEvent(&data);
 580
 581   openbox->bindings()->grabButtons(false, client);
 582
 583   // remove from the wm's map
 584   openbox->removeClient(client->window());
 585   Window *w = frame->allWindows();
 586   for (unsigned int i = 0; w[i]; ++i)
 587     openbox->addClient(w[i], client);
 588   delete [] w;
 589   // unregister for handling events
 590   openbox->clearHandler(client->window());
 591
 592   // remove the window from our save set
 593   XChangeSaveSet(**otk::display, client->window(), SetModeDelete);
 594
 595   // we dont want events no more
 596   XSelectInput(**otk::display, client->window(), NoEventMask);
 597
 598   frame->hide();
 599
 600   // give the client its border back
 601   client->toggleClientBorder(true);
 602
 603   // reparent the window out of the frame
 604   frame->releaseClient();
 605
 606 #ifdef DEBUG
 607   Window framewin = client->frame->window();
 608 #endif
 609   delete client->frame;
 610   client->frame = 0;
 611
 612   // remove from the stacking order
 613   _stacking.remove(client);
 614
 615   // remove from the screen's list
 616   clients.remove(client);
 617
 618   // once the client is out of the list, update our strut to remove it's
 619   // influence
 620   updateStruts();
 621
 622   // unset modal before dropping our focus
 623   client->_modal = false;
 624
 625   // unfocus the client (calls the focus callbacks)
 626   client->unfocus();
 627
 628 #ifdef DEBUG
 629   printf("Unmanaged window 0x%lx frame 0x%lx\n", client->window(), framewin);
 630 #endif
 631
 632   delete client;
 633
 634   // update the root properties
 635   changeClientList();
 636 }
 637
 638 void Screen::lowerWindow(Client *client)
 639 {
 640   Window wins[2];  // only ever restack 2 windows.
 641
 642   assert(!_stacking.empty()); // this would be bad
 643
 644   ClientList::iterator it = --_stacking.end();
 645   const ClientList::iterator end = _stacking.begin();
 646
 647   if (client->modal() && client->transientFor()) {
 648     // don't let a modal window lower below its transient_for
 649     it = std::find(_stacking.begin(), _stacking.end(), client->transientFor());
 650     assert(it != _stacking.end());
 651
 652     wins[0] = (it == _stacking.begin() ? _focuswindow :
 653                ((*(--ClientList::const_iterator(it)))->frame->window()));
 654     wins[1] = client->frame->window();
 655     if (wins[0] == wins[1]) return; // already right above the window
 656
 657     _stacking.remove(client);
 658     _stacking.insert(it, client);
 659   } else {
 660     for (; it != end && (*it)->layer() < client->layer(); --it);
 661     if (*it == client) return;          // already the bottom, return
 662
 663     wins[0] = (*it)->frame->window();
 664     wins[1] = client->frame->window();
 665
 666     _stacking.remove(client);
 667     _stacking.insert(++it, client);
 668   }
 669
 670   XRestackWindows(**otk::display, wins, 2);
 671   changeStackingList();
 672 }
 673
 674 void Screen::raiseWindow(Client *client)
 675 {
 676   Window wins[2];  // only ever restack 2 windows.
 677
 678   assert(!_stacking.empty()); // this would be bad
 679
 680   Client *m = client->findModalChild();
 681   // if we have a modal child, raise it instead, we'll go along tho later
 682   if (m) raiseWindow(m);
 683
 684   // remove the client before looking so we can't run into ourselves
 685   _stacking.remove(client);
 686
 687   ClientList::iterator it = _stacking.begin();
 688   const ClientList::iterator end = _stacking.end();
 689
 690   // the stacking list is from highest to lowest
 691 //  for (;it != end, ++it) {
 692 //    if ((*it)->layer() <= client->layer() && m != *it) break;
 693 //  }
 694   for (; it != end && ((*it)->layer() > client->layer() || m == *it); ++it);
 695
 696   /*
 697     if our new position is the top, we want to stack under the _focuswindow
 698     otherwise, we want to stack under the previous window in the stack.
 699   */
 700   wins[0] = (it == _stacking.begin() ? _focuswindow :
 701              ((*(--ClientList::const_iterator(it)))->frame->window()));
 702   wins[1] = client->frame->window();
 703
 704   _stacking.insert(it, client);
 705
 706   XRestackWindows(**otk::display, wins, 2);
 707
 708   changeStackingList();
 709 }
 710
 711 void Screen::changeDesktop(long desktop)
 712 {
 713   if (!(desktop >= 0 && desktop < _num_desktops)) return;
 714
 715   printf("Moving to desktop %ld\n", desktop);
 716
 717   long old = _desktop;
 718
 719   _desktop = desktop;
 720   otk::Property::set(_info->rootWindow(),
 721                      otk::Property::atoms.net_current_desktop,
 722                      otk::Property::atoms.cardinal, _desktop);
 723
 724   if (old == _desktop) return;
 725
 726   ClientList::iterator it, end = clients.end();
 727   for (it = clients.begin(); it != end; ++it) {
 728     if ((*it)->desktop() == old) {
 729       (*it)->frame->hide();
 730     } else if ((*it)->desktop() == _desktop) {
 731       (*it)->frame->show();
 732     }
 733   }
 734
 735   // force the callbacks to fire
 736   if (!openbox->focusedClient())
 737     openbox->setFocusedClient(0);
 738 }
 739
 740 void Screen::changeNumDesktops(long num)
 741 {
 742   assert(num > 0);
 743
 744   if (!(num > 0)) return;
 745
 746   // move windows on desktops that will no longer exist!
 747   ClientList::iterator it, end = clients.end();
 748   for (it = clients.begin(); it != end; ++it) {
 749     int d = (*it)->desktop();
 750     if (d >= num && !(d == (signed) 0xffffffff ||
 751                       d == Client::ICONIC_DESKTOP)) {
 752       XEvent ce;
 753       ce.xclient.type = ClientMessage;
 754       ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 755       ce.xclient.display = **otk::display;
 756       ce.xclient.window = (*it)->window();
 757       ce.xclient.format = 32;
 758       ce.xclient.data.l[0] = num - 1;
 759       XSendEvent(**otk::display, _info->rootWindow(), False,
 760                  SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 761     }
 762   }
 763
 764   _num_desktops = num;
 765   otk::Property::set(_info->rootWindow(),
 766                      otk::Property::atoms.net_number_of_desktops,
 767                      otk::Property::atoms.cardinal, _num_desktops);
 768
 769   // set the viewport hint
 770   unsigned long *viewport = new unsigned long[_num_desktops * 2];
 771   memset(viewport, 0, sizeof(unsigned long) * _num_desktops * 2);
 772   otk::Property::set(_info->rootWindow(),
 773                      otk::Property::atoms.net_desktop_viewport,
 774                      otk::Property::atoms.cardinal,
 775                      viewport, _num_desktops * 2);
 776   delete [] viewport;
 777
 778   // change our struts/area to match
 779   _area.resize(_num_desktops + 1);
 780   _struts.resize(_num_desktops + 1);
 781   updateStruts();
 782
 783   // change our desktop if we're on one that no longer exists!
 784   if (_desktop >= _num_desktops)
 785     changeDesktop(_num_desktops - 1);
 786 }
 787
 788
 789 void Screen::updateDesktopNames()
 790 {
 791   unsigned long num = (unsigned) -1;
 792
 793   if (!otk::Property::get(_info->rootWindow(),
 794                           otk::Property::atoms.net_desktop_names,
 795                           otk::Property::utf8, &num, &_desktop_names))
 796     _desktop_names.clear();
 797   while ((long)_desktop_names.size() < _num_desktops)
 798     _desktop_names.push_back("Unnamed");
 799 }
 800
 801
 802 void Screen::setDesktopName(long i, const otk::ustring &name)
 803 {
 804   assert(i >= 0);
 805
 806   if (i >= _num_desktops) return;
 807
 808   otk::Property::StringVect newnames = _desktop_names;
 809   newnames[i] = name;
 810   otk::Property::set(_info->rootWindow(),
 811                      otk::Property::atoms.net_desktop_names,
 812                      otk::Property::utf8, newnames);
 813 }
 814
 815
 816 const otk::Rect& Screen::area(long desktop) const {
 817   assert(desktop >= 0 || desktop == (signed) 0xffffffff);
 818   assert(desktop < _num_desktops || desktop == (signed) 0xffffffff);
 819   if (desktop >= 0 && desktop < _num_desktops)
 820     return _area[desktop];
 821   else
 822     return _area[_num_desktops];
 823 }
 824
 825 void Screen::installColormap(bool install) const
 826 {
 827   if (install)
 828     XInstallColormap(**otk::display, _info->colormap());
 829   else
 830     XUninstallColormap(**otk::display, _info->colormap());
 831 }
 832
 833
 834 void Screen::propertyHandler(const XPropertyEvent &e)
 835 {
 836   otk::EventHandler::propertyHandler(e);
 837
 838   // compress changes to a single property into a single change
 839   XEvent ce;
 840   while (XCheckTypedWindowEvent(**otk::display, _info->rootWindow(),
 841                                 e.type, &ce)) {
 842     // XXX: it would be nice to compress ALL changes to a property, not just
 843     //      changes in a row without other props between.
 844     if (ce.xproperty.atom != e.atom) {
 845       XPutBackEvent(**otk::display, &ce);
 846       break;
 847     }
 848   }
 849
 850   if (e.atom == otk::Property::atoms.net_desktop_names)
 851     updateDesktopNames();
 852 }
 853
 854
 855 void Screen::clientMessageHandler(const XClientMessageEvent &e)
 856 {
 857   otk::EventHandler::clientMessageHandler(e);
 858
 859   if (e.format != 32) return;
 860
 861   if (e.message_type == otk::Property::atoms.net_current_desktop) {
 862     changeDesktop(e.data.l[0]);
 863   } else if (e.message_type == otk::Property::atoms.net_number_of_desktops) {
 864     changeNumDesktops(e.data.l[0]);
 865   }
 866 }
 867
 868
 869 void Screen::mapRequestHandler(const XMapRequestEvent &e)
 870 {
 871   otk::EventHandler::mapRequestHandler(e);
 872
 873 #ifdef    DEBUG
 874   printf("MapRequest for 0x%lx\n", e.window);
 875 #endif // DEBUG
 876
 877   Client *c = openbox->findClient(e.window);
 878   if (c) {
 879 #ifdef DEBUG
 880     printf("DEBUG: MAP REQUEST CAUGHT IN SCREEN. IGNORED.\n");
 881 #endif
 882   } else
 883     manageWindow(e.window);
 884 }
 885
 886 }