src/screen.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #include "config.h"
   4
   5 #include "screen.hh"
   6 #include "client.hh"
   7 #include "openbox.hh"
   8 #include "frame.hh"
   9 #include "bindings.hh"
  10 #include "python.hh"
  11 #include "otk/display.hh"
  12 #include "otk/property.hh"
  13 #include "otk/util.hh"
  14
  15 extern "C" {
  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 <vector>
  26 #include <algorithm>
  27 #include <cstdio>
  28 #include <cstring>
  29
  30 static bool running;
  31 static int anotherWMRunning(Display *display, XErrorEvent *) {
  32   printf(_("Another window manager already running on display %s.\n"),
  33          DisplayString(display));
  34   running = true;
  35   return -1;
  36 }
  37
  38
  39 namespace ob {
  40
  41
  42 Screen::Screen(int screen)
  43   : _number(screen),
  44     _config(screen)
  45 {
  46   assert(screen >= 0); assert(screen < ScreenCount(**otk::display));
  47   _info = otk::display->screenInfo(screen);
  48
  49   ::running = false;
  50   XErrorHandler old = XSetErrorHandler(::anotherWMRunning);
  51   XSelectInput(**otk::display, _info->rootWindow(),
  52                Screen::event_mask);
  53   XSync(**otk::display, false);
  54   XSetErrorHandler(old);
  55
  56   _managed = !::running;
  57   if (! _managed) return; // was unable to manage the screen
  58
  59 #ifdef DEBUG
  60   printf(_("Managing screen %d: visual 0x%lx, depth %d\n"),
  61          _number, XVisualIDFromVisual(_info->visual()), _info->depth());
  62 #endif
  63
  64   otk::Property::set(_info->rootWindow(), otk::Property::atoms.openbox_pid,
  65                      otk::Property::atoms.cardinal, (unsigned long) getpid());
  66
  67   // set the mouse cursor for the root window (the default cursor)
  68   XDefineCursor(**otk::display, _info->rootWindow(),
  69                 openbox->cursors().session);
  70
  71   // set up notification of netwm support
  72   changeSupportedAtoms();
  73
  74   // Set the netwm properties for geometry
  75   unsigned long geometry[] = { _info->size().width(),
  76                                _info->size().height() };
  77   otk::Property::set(_info->rootWindow(),
  78                      otk::Property::atoms.net_desktop_geometry,
  79                      otk::Property::atoms.cardinal, geometry, 2);
  80
  81   _desktop = 0;
  82
  83   changeNumDesktops(1); // set the hint
  84   changeDesktop(0); // set the hint
  85
  86   // don't start in showing-desktop mode
  87   _showing_desktop = false;
  88   otk::Property::set(_info->rootWindow(),
  89                      otk::Property::atoms.net_showing_desktop,
  90                      otk::Property::atoms.cardinal, 0);
  91
  92   // create the window which gets focus when no clients get it
  93   XSetWindowAttributes attr;
  94   attr.override_redirect = true;
  95   _focuswindow = XCreateWindow(**otk::display, _info->rootWindow(),
  96                                -100, -100, 1, 1, 0, 0, InputOnly,
  97                                _info->visual(), CWOverrideRedirect, &attr);
  98   XMapRaised(**otk::display, _focuswindow);
  99
 100   // these may be further updated if any pre-existing windows are found in
 101   // the manageExising() function
 102   changeClientList();  // initialize the client lists, which will be empty
 103
 104   updateDesktopLayout();
 105
 106   // register this class as the event handler for the root window
 107   openbox->registerHandler(_info->rootWindow(), this);
 108
 109   // call the python Startup callbacks
 110   EventData data(_number, 0, EventAction::Startup, 0);
 111   openbox->bindings()->fireEvent(&data);
 112 }
 113
 114
 115 Screen::~Screen()
 116 {
 117   if (! _managed) return;
 118
 119   XSelectInput(**otk::display, _info->rootWindow(), NoEventMask);
 120
 121   // unmanage all windows
 122   while (!clients.empty())
 123     unmanageWindow(clients.front());
 124
 125   // call the python Shutdown callbacks
 126   EventData data(_number, 0, EventAction::Shutdown, 0);
 127   openbox->bindings()->fireEvent(&data);
 128
 129   XDestroyWindow(**otk::display, _focuswindow);
 130   XDestroyWindow(**otk::display, _supportwindow);
 131 }
 132
 133
 134 void Screen::manageExisting()
 135 {
 136   unsigned int i, j, nchild;
 137   Window r, p, *children;
 138   XQueryTree(**otk::display, _info->rootWindow(), &r, &p,
 139              &children, &nchild);
 140
 141   // preen the window list of all icon windows... for better dockapp support
 142   for (i = 0; i < nchild; i++) {
 143     if (children[i] == None) continue;
 144
 145     XWMHints *wmhints = XGetWMHints(**otk::display,
 146                                     children[i]);
 147
 148     if (wmhints) {
 149       if ((wmhints->flags & IconWindowHint) &&
 150           (wmhints->icon_window != children[i])) {
 151         for (j = 0; j < nchild; j++) {
 152           if (children[j] == wmhints->icon_window) {
 153             children[j] = None;
 154             break;
 155           }
 156         }
 157       }
 158
 159       XFree(wmhints);
 160     }
 161   }
 162
 163   // manage shown windows
 164   for (i = 0; i < nchild; ++i) {
 165     if (children[i] == None)
 166       continue;
 167
 168     XWindowAttributes attrib;
 169     if (XGetWindowAttributes(**otk::display, children[i], &attrib)) {
 170       if (attrib.override_redirect) continue;
 171
 172       if (attrib.map_state != IsUnmapped) {
 173         manageWindow(children[i]);
 174       }
 175     }
 176   }
 177
 178   XFree(children);
 179 }
 180
 181 void Screen::updateDesktopLayout()
 182 {
 183   //const unsigned long _NET_WM_ORIENTATION_HORZ = 0;
 184   const unsigned long _NET_WM_ORIENTATION_VERT = 1;
 185   //const unsigned long _NET_WM_TOPLEFT = 0;
 186   const unsigned long _NET_WM_TOPRIGHT = 1;
 187   const unsigned long _NET_WM_BOTTOMRIGHT = 2;
 188   const unsigned long _NET_WM_BOTTOMLEFT = 3;
 189
 190   // defaults
 191   _layout.orientation = DesktopLayout::Horizontal;
 192   _layout.start_corner = DesktopLayout::TopLeft;
 193   _layout.rows = 1;
 194   _layout.columns = _num_desktops;
 195
 196   unsigned long *data, num = 4;
 197   if (otk::Property::get(_info->rootWindow(),
 198                          otk::Property::atoms.net_desktop_layout,
 199                          otk::Property::atoms.cardinal,
 200                          &num, &data)) {
 201     if (num == 4) {
 202       if (data[0] == _NET_WM_ORIENTATION_VERT)
 203         _layout.orientation = DesktopLayout::Vertical;
 204       if (data[3] == _NET_WM_TOPRIGHT)
 205         _layout.start_corner = DesktopLayout::TopRight;
 206       else if (data[3] == _NET_WM_BOTTOMRIGHT)
 207         _layout.start_corner = DesktopLayout::BottomRight;
 208       else if (data[3] == _NET_WM_BOTTOMLEFT)
 209         _layout.start_corner = DesktopLayout::BottomLeft;
 210
 211       // fill in a zero rows/columns
 212       if (!(data[1] == 0 && data[2] == 0)) { // both 0's is bad data..
 213         if (data[1] == 0) {
 214           data[1] = (_num_desktops + _num_desktops % data[2]) / data[2];
 215         } else if (data[2] == 0) {
 216           data[2] = (_num_desktops + _num_desktops % data[1]) / data[1];
 217         }
 218         _layout.columns = data[1];
 219         _layout.rows = data[2];
 220       }
 221
 222       // bounds checking
 223       if (_layout.orientation == DesktopLayout::Horizontal) {
 224         if (_layout.rows > _num_desktops) _layout.rows = _num_desktops;
 225         if (_layout.columns > (_num_desktops + _num_desktops % _layout.rows) /
 226             _layout.rows)
 227           _layout.columns = (_num_desktops + _num_desktops % _layout.rows) /
 228             _layout.rows;
 229       } else {
 230         if (_layout.columns > _num_desktops) _layout.columns = _num_desktops;
 231         if (_layout.rows > (_num_desktops + _num_desktops % _layout.columns) /
 232             _layout.columns)
 233           _layout.rows = (_num_desktops + _num_desktops % _layout.columns) /
 234             _layout.columns;
 235       }
 236     }
 237     delete [] data;
 238   }
 239 }
 240
 241 void Screen::updateStruts()
 242 {
 243   struct ApplyStrut {
 244     void operator()(otk::Strut &self, const otk::Strut &other) {
 245       self.left = std::max(self.left, other.left);
 246       self.right = std::max(self.right, other.right);
 247       self.top = std::max(self.top, other.top);
 248       self.bottom = std::max(self.bottom, other.bottom);
 249     }
 250   } apply;
 251
 252   StrutList::iterator sit, send = _struts.end();
 253   // reset them all
 254   for (sit = _struts.begin(); sit != send; ++sit)
 255     sit->left = sit->right = sit->top = sit->bottom = 0;
 256
 257   std::list<Client*>::const_iterator it, end = clients.end();
 258   for (it = clients.begin(); it != end; ++it) {
 259     if ((*it)->iconic()) continue; // these dont count in the strut
 260
 261     unsigned int desk = (*it)->desktop();
 262     const otk::Strut &s = (*it)->strut();
 263
 264     if (desk == 0xffffffff)
 265       for (unsigned int i = 0, e = _struts.size(); i < e; ++i)
 266         apply(_struts[i], s);
 267     else if (desk < _struts.size())
 268       apply(_struts[desk], s);
 269     else
 270       assert(false); // invalid desktop otherwise..
 271     // apply to the 'all desktops' strut
 272     apply(_struts.back(), s);
 273   }
 274   changeWorkArea();
 275 }
 276
 277
 278 void Screen::changeWorkArea()
 279 {
 280   unsigned long *dims = new unsigned long[4 * _num_desktops];
 281   for (unsigned int i = 0; i < _num_desktops + 1; ++i) {
 282     otk::Rect old_area = _area[i];
 283 /*
 284 #ifdef    XINERAMA
 285   // reset to the full areas
 286   if (isXineramaActive())
 287     xineramaUsableArea = getXineramaAreas();
 288 #endif // XINERAMA
 289 */
 290
 291     _area[i] = otk::Rect(_struts[i].left, _struts[i].top,
 292                          _info->size().width() - (_struts[i].left +
 293                                                   _struts[i].right),
 294                          _info->size().height() - (_struts[i].top +
 295                                                    _struts[i].bottom));
 296
 297 /*
 298 #ifdef    XINERAMA
 299   if (isXineramaActive()) {
 300     // keep each of the ximerama-defined areas inside the strut
 301     RectList::iterator xit, xend = xineramaUsableArea.end();
 302     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 303       if (xit->x() < usableArea.x()) {
 304         xit->setX(usableArea.x());
 305         xit->setWidth(xit->width() - usableArea.x());
 306       }
 307       if (xit->y() < usableArea.y()) {
 308         xit->setY(usableArea.y());
 309         xit->setHeight(xit->height() - usableArea.y());
 310       }
 311       if (xit->x() + xit->width() > usableArea.width())
 312         xit->setWidth(usableArea.width() - xit->x());
 313       if (xit->y() + xit->height() > usableArea.height())
 314         xit->setHeight(usableArea.height() - xit->y());
 315     }
 316   }
 317 #endif // XINERAMA
 318 */
 319     if (old_area != _area[i]) {
 320       // the area has changed, adjust all the maximized windows
 321       std::list<Client*>::iterator it, end = clients.end();
 322       for (it = clients.begin(); it != end; ++it)
 323         if (i < _num_desktops) {
 324           if ((*it)->desktop() == i)
 325             (*it)->remaximize();
 326         } else {
 327           // the 'all desktops' size
 328           if ((*it)->desktop() == 0xffffffff)
 329             (*it)->remaximize();
 330         }
 331     }
 332
 333     // don't set these for the 'all desktops' area
 334     if (i < _num_desktops) {
 335       dims[(i * 4) + 0] = _area[i].x();
 336       dims[(i * 4) + 1] = _area[i].y();
 337       dims[(i * 4) + 2] = _area[i].width();
 338       dims[(i * 4) + 3] = _area[i].height();
 339     }
 340   }
 341   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_workarea,
 342                      otk::Property::atoms.cardinal, dims, 4 * _num_desktops);
 343   delete [] dims;
 344 }
 345
 346
 347 void Screen::changeSupportedAtoms()
 348 {
 349   // create the netwm support window
 350   _supportwindow = XCreateSimpleWindow(**otk::display,
 351                                        _info->rootWindow(),
 352                                        0, 0, 1, 1, 0, 0, 0);
 353
 354   // set supporting window
 355   otk::Property::set(_info->rootWindow(),
 356                      otk::Property::atoms.net_supporting_wm_check,
 357                      otk::Property::atoms.window, _supportwindow);
 358
 359   //set properties on the supporting window
 360   otk::Property::set(_supportwindow, otk::Property::atoms.net_wm_name,
 361                      otk::Property::utf8, "Openbox");
 362   otk::Property::set(_supportwindow,
 363                      otk::Property::atoms.net_supporting_wm_check,
 364                      otk::Property::atoms.window, _supportwindow);
 365
 366
 367   Atom supported[] = {
 368     otk::Property::atoms.net_current_desktop,
 369     otk::Property::atoms.net_number_of_desktops,
 370     otk::Property::atoms.net_desktop_geometry,
 371     otk::Property::atoms.net_desktop_viewport,
 372     otk::Property::atoms.net_active_window,
 373     otk::Property::atoms.net_workarea,
 374     otk::Property::atoms.net_client_list,
 375     otk::Property::atoms.net_client_list_stacking,
 376     otk::Property::atoms.net_desktop_names,
 377     otk::Property::atoms.net_close_window,
 378     otk::Property::atoms.net_desktop_layout,
 379     otk::Property::atoms.net_showing_desktop,
 380     otk::Property::atoms.net_wm_name,
 381     otk::Property::atoms.net_wm_visible_name,
 382     otk::Property::atoms.net_wm_icon_name,
 383     otk::Property::atoms.net_wm_visible_icon_name,
 384     otk::Property::atoms.net_wm_desktop,
 385     otk::Property::atoms.net_wm_strut,
 386     otk::Property::atoms.net_wm_window_type,
 387     otk::Property::atoms.net_wm_window_type_desktop,
 388     otk::Property::atoms.net_wm_window_type_dock,
 389     otk::Property::atoms.net_wm_window_type_toolbar,
 390     otk::Property::atoms.net_wm_window_type_menu,
 391     otk::Property::atoms.net_wm_window_type_utility,
 392     otk::Property::atoms.net_wm_window_type_splash,
 393     otk::Property::atoms.net_wm_window_type_dialog,
 394     otk::Property::atoms.net_wm_window_type_normal,
 395 /*
 396     otk::Property::atoms.net_wm_moveresize,
 397     otk::Property::atoms.net_wm_moveresize_size_topleft,
 398     otk::Property::atoms.net_wm_moveresize_size_topright,
 399     otk::Property::atoms.net_wm_moveresize_size_bottomleft,
 400     otk::Property::atoms.net_wm_moveresize_size_bottomright,
 401     otk::Property::atoms.net_wm_moveresize_move,
 402 */
 403     otk::Property::atoms.net_wm_allowed_actions,
 404     otk::Property::atoms.net_wm_action_move,
 405     otk::Property::atoms.net_wm_action_resize,
 406     otk::Property::atoms.net_wm_action_minimize,
 407     otk::Property::atoms.net_wm_action_shade,
 408 /*    otk::Property::atoms.net_wm_action_stick,*/
 409     otk::Property::atoms.net_wm_action_maximize_horz,
 410     otk::Property::atoms.net_wm_action_maximize_vert,
 411     otk::Property::atoms.net_wm_action_fullscreen,
 412     otk::Property::atoms.net_wm_action_change_desktop,
 413     otk::Property::atoms.net_wm_action_close,
 414
 415     otk::Property::atoms.net_wm_state,
 416     otk::Property::atoms.net_wm_state_modal,
 417     otk::Property::atoms.net_wm_state_maximized_vert,
 418     otk::Property::atoms.net_wm_state_maximized_horz,
 419     otk::Property::atoms.net_wm_state_shaded,
 420     otk::Property::atoms.net_wm_state_skip_taskbar,
 421     otk::Property::atoms.net_wm_state_skip_pager,
 422     otk::Property::atoms.net_wm_state_hidden,
 423     otk::Property::atoms.net_wm_state_fullscreen,
 424     otk::Property::atoms.net_wm_state_above,
 425     otk::Property::atoms.net_wm_state_below,
 426   };
 427   const int num_supported = sizeof(supported)/sizeof(Atom);
 428
 429   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_supported,
 430                      otk::Property::atoms.atom, supported, num_supported);
 431 }
 432
 433
 434 void Screen::changeClientList()
 435 {
 436   Window *windows;
 437   unsigned int size = clients.size();
 438
 439   // create an array of the window ids
 440   if (size > 0) {
 441     Window *win_it;
 442
 443     windows = new Window[size];
 444     win_it = windows;
 445     std::list<Client*>::const_iterator it = clients.begin();
 446     const std::list<Client*>::const_iterator end = clients.end();
 447     for (; it != end; ++it, ++win_it)
 448       *win_it = (*it)->window();
 449   } else
 450     windows = (Window*) 0;
 451
 452   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_client_list,
 453                      otk::Property::atoms.window, windows, size);
 454
 455   if (size)
 456     delete [] windows;
 457
 458   changeStackingList();
 459 }
 460
 461
 462 void Screen::changeStackingList()
 463 {
 464   Window *windows;
 465   unsigned int size = _stacking.size();
 466
 467   assert(size == clients.size()); // just making sure.. :)
 468
 469
 470   // create an array of the window ids (from bottom to top, reverse order!)
 471   if (size > 0) {
 472     Window *win_it;
 473
 474     windows = new Window[size];
 475     win_it = windows;
 476     std::list<Client*>::const_reverse_iterator it = _stacking.rbegin();
 477     const std::list<Client*>::const_reverse_iterator end = _stacking.rend();
 478     for (; it != end; ++it, ++win_it)
 479       *win_it = (*it)->window();
 480   } else
 481     windows = (Window*) 0;
 482
 483   otk::Property::set(_info->rootWindow(),
 484                      otk::Property::atoms.net_client_list_stacking,
 485                      otk::Property::atoms.window, windows, size);
 486
 487   if (size)
 488     delete [] windows;
 489 }
 490
 491
 492 void Screen::manageWindow(Window window)
 493 {
 494   Client *client = 0;
 495   XWMHints *wmhint;
 496   XSetWindowAttributes attrib_set;
 497   XEvent e;
 498   XWindowAttributes attrib;
 499
 500   otk::display->grab();
 501
 502   // check if it has already been unmapped by the time we started mapping
 503   // the grab does a sync so we don't have to here
 504   if (XCheckTypedWindowEvent(**otk::display, window, DestroyNotify, &e) ||
 505       XCheckTypedWindowEvent(**otk::display, window, UnmapNotify, &e)) {
 506     XPutBackEvent(**otk::display, &e);
 507
 508     otk::display->ungrab();
 509     return; // don't manage it
 510   }
 511
 512   if (!XGetWindowAttributes(**otk::display, window, &attrib) ||
 513       attrib.override_redirect) {
 514     otk::display->ungrab();
 515     return; // don't manage it
 516   }
 517
 518   // is the window a docking app
 519   if ((wmhint = XGetWMHints(**otk::display, window))) {
 520     if ((wmhint->flags & StateHint) &&
 521         wmhint->initial_state == WithdrawnState) {
 522       //slit->addClient(w); // XXX: make dock apps work!
 523
 524       otk::display->ungrab();
 525       XFree(wmhint);
 526       return;
 527     }
 528     XFree(wmhint);
 529   }
 530
 531   // choose the events we want to receive on the CLIENT window
 532   attrib_set.event_mask = Client::event_mask;
 533   attrib_set.do_not_propagate_mask = Client::no_propagate_mask;
 534   XChangeWindowAttributes(**otk::display, window,
 535                           CWEventMask|CWDontPropagate, &attrib_set);
 536
 537   // create the Client class, which gets all of the hints on the window
 538   client = new Client(_number, window);
 539   // register for events
 540   openbox->registerHandler(window, client);
 541   // add to the wm's map
 542   openbox->addClient(window, client);
 543
 544   // we dont want a border on the client
 545   client->toggleClientBorder(false);
 546
 547   // specify that if we exit, the window should not be destroyed and should be
 548   // reparented back to root automatically
 549   XChangeSaveSet(**otk::display, window, SetModeInsert);
 550
 551   // create the decoration frame for the client window
 552   client->frame = new Frame(client);
 553   // register the plate for events (map req's)
 554   // this involves removing itself from the handler list first, since it is
 555   // auto added to the list, being a widget. we won't get any events on the
 556   // plate except for events for the client (SubstructureRedirectMask)
 557   openbox->clearHandler(client->frame->plate());
 558   openbox->registerHandler(client->frame->plate(), client);
 559
 560   // add to the wm's map
 561   Window *w = client->frame->allWindows();
 562   for (unsigned int i = 0; w[i]; ++i)
 563     openbox->addClient(w[i], client);
 564   delete [] w;
 565
 566   // reparent the client to the frame
 567   client->frame->grabClient();
 568
 569   if (openbox->state() != Openbox::State_Starting) {
 570     // position the window intelligenty .. hopefully :)
 571     // call the python PLACEWINDOW binding
 572     EventData data(_number, client, EventAction::PlaceWindow, 0);
 573     openbox->bindings()->fireEvent(&data);
 574   }
 575
 576   EventData ddata(_number, client, EventAction::DisplayingWindow, 0);
 577   openbox->bindings()->fireEvent(&ddata);
 578
 579   client->showhide();
 580
 581   client->applyStartupState();
 582
 583   otk::display->ungrab();
 584
 585   // add to the screen's list
 586   clients.push_back(client);
 587   // once the client is in the list, update our strut to include the new
 588   // client's (it is good that this happens after window placement!)
 589   updateStruts();
 590   // this puts into the stacking order, then raises it
 591   _stacking.push_back(client);
 592   raiseWindow(client);
 593   // update the root properties
 594   changeClientList();
 595
 596   openbox->bindings()->grabButtons(true, client);
 597
 598   EventData ndata(_number, client, EventAction::NewWindow, 0);
 599   openbox->bindings()->fireEvent(&ndata);
 600
 601 #ifdef DEBUG
 602   printf("Managed window 0x%lx frame 0x%lx\n",
 603          window, client->frame->window());
 604 #endif
 605 }
 606
 607
 608 void Screen::unmanageWindow(Client *client)
 609 {
 610   Frame *frame = client->frame;
 611
 612   // call the python CLOSEWINDOW binding
 613   EventData data(_number, client, EventAction::CloseWindow, 0);
 614   openbox->bindings()->fireEvent(&data);
 615
 616   openbox->bindings()->grabButtons(false, client);
 617
 618   // remove from the wm's map
 619   openbox->removeClient(client->window());
 620   Window *w = frame->allWindows();
 621   for (unsigned int i = 0; w[i]; ++i)
 622     openbox->addClient(w[i], client);
 623   delete [] w;
 624   // unregister for handling events
 625   openbox->clearHandler(client->window());
 626
 627   // remove the window from our save set
 628   XChangeSaveSet(**otk::display, client->window(), SetModeDelete);
 629
 630   // we dont want events no more
 631   XSelectInput(**otk::display, client->window(), NoEventMask);
 632
 633   frame->hide();
 634
 635   // give the client its border back
 636   client->toggleClientBorder(true);
 637
 638   // reparent the window out of the frame
 639   frame->releaseClient();
 640
 641 #ifdef DEBUG
 642   Window framewin = client->frame->window();
 643 #endif
 644   delete client->frame;
 645   client->frame = 0;
 646
 647   // remove from the stacking order
 648   _stacking.remove(client);
 649
 650   // remove from the screen's list
 651   clients.remove(client);
 652
 653   // once the client is out of the list, update our strut to remove it's
 654   // influence
 655   updateStruts();
 656
 657   // unset modal before dropping our focus
 658   client->_modal = false;
 659
 660   // unfocus the client (calls the focus callbacks)
 661   if (client->focused()) client->unfocus();
 662
 663 #ifdef DEBUG
 664   printf("Unmanaged window 0x%lx frame 0x%lx\n", client->window(), framewin);
 665 #endif
 666
 667   delete client;
 668
 669   // update the root properties
 670   changeClientList();
 671 }
 672
 673 void Screen::lowerWindow(Client *client)
 674 {
 675   Window wins[2];  // only ever restack 2 windows.
 676
 677   assert(!_stacking.empty()); // this would be bad
 678
 679   std::list<Client*>::iterator it = --_stacking.end();
 680   const std::list<Client*>::iterator end = _stacking.begin();
 681
 682   if (client->modal() && client->transientFor()) {
 683     // don't let a modal window lower below its transient_for
 684     it = std::find(_stacking.begin(), _stacking.end(), client->transientFor());
 685     assert(it != _stacking.end());
 686
 687     wins[0] = (it == _stacking.begin() ? _focuswindow :
 688                ((*(--std::list<Client*>::const_iterator(it)))->
 689                 frame->window()));
 690     wins[1] = client->frame->window();
 691     if (wins[0] == wins[1]) return; // already right above the window
 692
 693     _stacking.remove(client);
 694     _stacking.insert(it, client);
 695   } else {
 696     for (; it != end && (*it)->layer() < client->layer(); --it);
 697     if (*it == client) return;          // already the bottom, return
 698
 699     wins[0] = (*it)->frame->window();
 700     wins[1] = client->frame->window();
 701
 702     _stacking.remove(client);
 703     _stacking.insert(++it, client);
 704   }
 705
 706   XRestackWindows(**otk::display, wins, 2);
 707   changeStackingList();
 708 }
 709
 710 void Screen::raiseWindow(Client *client)
 711 {
 712   Window wins[2];  // only ever restack 2 windows.
 713
 714   assert(!_stacking.empty()); // this would be bad
 715
 716   Client *m = client->findModalChild();
 717   // if we have a modal child, raise it instead, we'll go along tho later
 718   if (m) raiseWindow(m);
 719
 720   // remove the client before looking so we can't run into ourselves
 721   _stacking.remove(client);
 722
 723   std::list<Client*>::iterator it = _stacking.begin();
 724   const std::list<Client*>::iterator end = _stacking.end();
 725
 726   // the stacking list is from highest to lowest
 727   for (; it != end && ((*it)->layer() > client->layer() || m == *it); ++it);
 728
 729   /*
 730     if our new position is the top, we want to stack under the _focuswindow
 731     otherwise, we want to stack under the previous window in the stack.
 732   */
 733   wins[0] = (it == _stacking.begin() ? _focuswindow :
 734              ((*(--std::list<Client*>::const_iterator(it)))->frame->window()));
 735   wins[1] = client->frame->window();
 736
 737   _stacking.insert(it, client);
 738
 739   XRestackWindows(**otk::display, wins, 2);
 740
 741   changeStackingList();
 742 }
 743
 744 void Screen::changeDesktop(unsigned int desktop)
 745 {
 746   if (desktop >= _num_desktops) return;
 747
 748   printf("Moving to desktop %u\n", desktop);
 749
 750   unsigned int old = _desktop;
 751
 752   _desktop = desktop;
 753   otk::Property::set(_info->rootWindow(),
 754                      otk::Property::atoms.net_current_desktop,
 755                      otk::Property::atoms.cardinal, _desktop);
 756
 757   if (old == _desktop) return;
 758
 759   std::list<Client*>::iterator it, end = clients.end();
 760   for (it = clients.begin(); it != end; ++it)
 761     (*it)->showhide();
 762
 763   // force the callbacks to fire
 764   if (!openbox->focusedClient())
 765     openbox->setFocusedClient(0);
 766 }
 767
 768 void Screen::changeNumDesktops(unsigned int num)
 769 {
 770   assert(num > 0);
 771
 772   if (!(num > 0)) return;
 773
 774   // move windows on desktops that will no longer exist!
 775   std::list<Client*>::iterator it, end = clients.end();
 776   for (it = clients.begin(); it != end; ++it) {
 777     unsigned int d = (*it)->desktop();
 778     if (d >= num && d != 0xffffffff) {
 779       XEvent ce;
 780       ce.xclient.type = ClientMessage;
 781       ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 782       ce.xclient.display = **otk::display;
 783       ce.xclient.window = (*it)->window();
 784       ce.xclient.format = 32;
 785       ce.xclient.data.l[0] = num - 1;
 786       XSendEvent(**otk::display, _info->rootWindow(), false,
 787                  SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 788     }
 789   }
 790
 791   _num_desktops = num;
 792   otk::Property::set(_info->rootWindow(),
 793                      otk::Property::atoms.net_number_of_desktops,
 794                      otk::Property::atoms.cardinal, _num_desktops);
 795
 796   // set the viewport hint
 797   unsigned long *viewport = new unsigned long[_num_desktops * 2];
 798   memset(viewport, 0, sizeof(unsigned long) * _num_desktops * 2);
 799   otk::Property::set(_info->rootWindow(),
 800                      otk::Property::atoms.net_desktop_viewport,
 801                      otk::Property::atoms.cardinal,
 802                      viewport, _num_desktops * 2);
 803   delete [] viewport;
 804
 805   // change our struts/area to match
 806   _area.resize(_num_desktops + 1);
 807   _struts.resize(_num_desktops + 1);
 808   updateStruts();
 809
 810   // the number of rows/columns will differ
 811   updateDesktopLayout();
 812
 813   // may be some unnamed desktops that we need to fill in with names
 814   updateDesktopNames();
 815
 816   // change our desktop if we're on one that no longer exists!
 817   if (_desktop >= _num_desktops)
 818     changeDesktop(_num_desktops - 1);
 819 }
 820
 821
 822 void Screen::updateDesktopNames()
 823 {
 824   unsigned long num;
 825
 826   if (!otk::Property::get(_info->rootWindow(),
 827                           otk::Property::atoms.net_desktop_names,
 828                           otk::Property::utf8, &num, &_desktop_names))
 829     _desktop_names.clear();
 830   while (_desktop_names.size() < _num_desktops)
 831     _desktop_names.push_back("Unnamed");
 832 }
 833
 834
 835 const otk::Rect& Screen::area(unsigned int desktop) const {
 836   assert(desktop < _num_desktops || desktop == 0xffffffff);
 837   if (desktop < _num_desktops)
 838     return _area[desktop];
 839   else
 840     return _area[_num_desktops];
 841 }
 842
 843 void Screen::installColormap(bool install) const
 844 {
 845   if (install)
 846     XInstallColormap(**otk::display, _info->colormap());
 847   else
 848     XUninstallColormap(**otk::display, _info->colormap());
 849 }
 850
 851 void Screen::showDesktop(bool show)
 852 {
 853   if (show == _showing_desktop) return; // no change
 854
 855   // save the window focus, and restore it when leaving the show-desktop mode
 856   static Window saved_focus = 0;
 857   if (show) {
 858     Client *c = openbox->focusedClient();
 859     if (c) saved_focus = c->window();
 860   }
 861
 862   _showing_desktop = show;
 863
 864   std::list<Client*>::iterator it, end = clients.end();
 865   for (it = clients.begin(); it != end; ++it) {
 866     if ((*it)->type() == Client::Type_Desktop) {
 867       if (show)
 868         (*it)->focus();
 869     } else
 870       (*it)->showhide();
 871   }
 872
 873   if (!show) {
 874     Client *f = openbox->focusedClient();
 875     if (!f || f->type() == Client::Type_Desktop) {
 876       Client *c = openbox->findClient(saved_focus);
 877       if (c) c->focus();
 878     }
 879   }
 880
 881   otk::Property::set(_info->rootWindow(),
 882                      otk::Property::atoms.net_showing_desktop,
 883                      otk::Property::atoms.cardinal,
 884                      show ? 1 : 0);
 885 }
 886
 887 void Screen::propertyHandler(const XPropertyEvent &e)
 888 {
 889   otk::EventHandler::propertyHandler(e);
 890
 891   // compress changes to a single property into a single change
 892   XEvent ce;
 893   while (XCheckTypedWindowEvent(**otk::display, _info->rootWindow(),
 894                                 e.type, &ce)) {
 895     // XXX: it would be nice to compress ALL changes to a property, not just
 896     //      changes in a row without other props between.
 897     if (ce.xproperty.atom != e.atom) {
 898       XPutBackEvent(**otk::display, &ce);
 899       break;
 900     }
 901   }
 902
 903   if (e.atom == otk::Property::atoms.net_desktop_names)
 904     updateDesktopNames();
 905   else if (e.atom == otk::Property::atoms.net_desktop_layout)
 906     updateDesktopLayout();
 907 }
 908
 909
 910 void Screen::clientMessageHandler(const XClientMessageEvent &e)
 911 {
 912   otk::EventHandler::clientMessageHandler(e);
 913
 914   if (e.format != 32) return;
 915
 916   if (e.message_type == otk::Property::atoms.net_current_desktop) {
 917     changeDesktop(e.data.l[0]);
 918   } else if (e.message_type == otk::Property::atoms.net_number_of_desktops) {
 919     changeNumDesktops(e.data.l[0]);
 920   } else if (e.message_type == otk::Property::atoms.net_showing_desktop) {
 921     showDesktop(e.data.l[0] != 0);
 922   }
 923 }
 924
 925
 926 void Screen::mapRequestHandler(const XMapRequestEvent &e)
 927 {
 928   otk::EventHandler::mapRequestHandler(e);
 929
 930 #ifdef    DEBUG
 931   printf("MapRequest for 0x%lx\n", e.window);
 932 #endif // DEBUG
 933
 934   Client *c = openbox->findClient(e.window);
 935   if (c) {
 936 #ifdef DEBUG
 937     printf("DEBUG: MAP REQUEST CAUGHT IN SCREEN. IGNORED.\n");
 938 #endif
 939   } else {
 940     if (_showing_desktop)
 941       showDesktop(false); // leave showing-the-desktop mode
 942     manageWindow(e.window);
 943   }
 944 }
 945
 946 }