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   _showing_desktop = false;
  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   // XXX: initialize the screen's style
  72   /*
  73   otk::ustring stylepath;
  74   python_get_string("THEME", &stylepath);
  75   otk::Configuration sconfig(false);
  76   sconfig.setFile(otk::expandTilde(stylepath.c_str()));
  77   if (!sconfig.load()) {
  78     sconfig.setFile(otk::expandTilde(DEFAULTSTYLE));
  79     if (!sconfig.load()) {
  80       printf(_("Unable to load default style: %s. Aborting.\n"), DEFAULTSTYLE);
  81       ::exit(1);
  82     }
  83   }
  84   _style.load(sconfig);
  85   */
  86   otk::display->renderControl(_number)->
  87     drawRoot(*otk::RenderStyle::style(_number)->rootColor());
  88
  89   // set up notification of netwm support
  90   changeSupportedAtoms();
  91
  92   // Set the netwm properties for geometry
  93   unsigned long geometry[] = { _info->size().width(),
  94                                _info->size().height() };
  95   otk::Property::set(_info->rootWindow(),
  96                      otk::Property::atoms.net_desktop_geometry,
  97                      otk::Property::atoms.cardinal, geometry, 2);
  98
  99   // Set the net_desktop_names property
 100   std::vector<otk::ustring> names;
 101   python_get_stringlist("DESKTOP_NAMES", &names);
 102   otk::Property::set(_info->rootWindow(),
 103                      otk::Property::atoms.net_desktop_names,
 104                      otk::Property::utf8, names);
 105   // the above set() will cause the updateDesktopNames to fire right away so
 106   // we have a list of desktop names
 107
 108   _desktop = 0;
 109
 110   if (!python_get_long("NUMBER_OF_DESKTOPS", (long*)&_num_desktops))
 111     _num_desktops = 1;
 112   changeNumDesktops(_num_desktops); // set the hint
 113
 114   changeDesktop(0); // set the hint
 115
 116   // create the window which gets focus when no clients get it
 117   XSetWindowAttributes attr;
 118   attr.override_redirect = true;
 119   _focuswindow = XCreateWindow(**otk::display, _info->rootWindow(),
 120                                -100, -100, 1, 1, 0, 0, InputOnly,
 121                                _info->visual(), CWOverrideRedirect, &attr);
 122   XMapRaised(**otk::display, _focuswindow);
 123
 124   // these may be further updated if any pre-existing windows are found in
 125   // the manageExising() function
 126   changeClientList();  // initialize the client lists, which will be empty
 127
 128   updateDesktopLayout();
 129
 130   // register this class as the event handler for the root window
 131   openbox->registerHandler(_info->rootWindow(), this);
 132
 133   // call the python Startup callbacks
 134   EventData data(_number, 0, EventAction::Startup, 0);
 135   openbox->bindings()->fireEvent(&data);
 136 }
 137
 138
 139 Screen::~Screen()
 140 {
 141   if (! _managed) return;
 142
 143   XSelectInput(**otk::display, _info->rootWindow(), NoEventMask);
 144
 145   // unmanage all windows
 146   while (!clients.empty())
 147     unmanageWindow(clients.front());
 148
 149   // call the python Shutdown callbacks
 150   EventData data(_number, 0, EventAction::Shutdown, 0);
 151   openbox->bindings()->fireEvent(&data);
 152
 153   XDestroyWindow(**otk::display, _focuswindow);
 154   XDestroyWindow(**otk::display, _supportwindow);
 155 }
 156
 157
 158 void Screen::manageExisting()
 159 {
 160   unsigned int i, j, nchild;
 161   Window r, p, *children;
 162   XQueryTree(**otk::display, _info->rootWindow(), &r, &p,
 163              &children, &nchild);
 164
 165   // preen the window list of all icon windows... for better dockapp support
 166   for (i = 0; i < nchild; i++) {
 167     if (children[i] == None) continue;
 168
 169     XWMHints *wmhints = XGetWMHints(**otk::display,
 170                                     children[i]);
 171
 172     if (wmhints) {
 173       if ((wmhints->flags & IconWindowHint) &&
 174           (wmhints->icon_window != children[i])) {
 175         for (j = 0; j < nchild; j++) {
 176           if (children[j] == wmhints->icon_window) {
 177             children[j] = None;
 178             break;
 179           }
 180         }
 181       }
 182
 183       XFree(wmhints);
 184     }
 185   }
 186
 187   // manage shown windows
 188   for (i = 0; i < nchild; ++i) {
 189     if (children[i] == None)
 190       continue;
 191
 192     XWindowAttributes attrib;
 193     if (XGetWindowAttributes(**otk::display, children[i], &attrib)) {
 194       if (attrib.override_redirect) continue;
 195
 196       if (attrib.map_state != IsUnmapped) {
 197         manageWindow(children[i]);
 198       }
 199     }
 200   }
 201
 202   XFree(children);
 203 }
 204
 205 void Screen::updateDesktopLayout()
 206 {
 207   //const unsigned long _NET_WM_ORIENTATION_HORZ = 0;
 208   const unsigned long _NET_WM_ORIENTATION_VERT = 1;
 209   //const unsigned long _NET_WM_TOPLEFT = 0;
 210   const unsigned long _NET_WM_TOPRIGHT = 1;
 211   const unsigned long _NET_WM_BOTTOMRIGHT = 2;
 212   const unsigned long _NET_WM_BOTTOMLEFT = 3;
 213
 214   // defaults
 215   _layout.orientation = DesktopLayout::Horizontal;
 216   _layout.start_corner = DesktopLayout::TopLeft;
 217   _layout.rows = 1;
 218   _layout.columns = _num_desktops;
 219
 220   unsigned long *data, num = 4;
 221   if (otk::Property::get(_info->rootWindow(),
 222                          otk::Property::atoms.net_desktop_layout,
 223                          otk::Property::atoms.cardinal,
 224                          &num, &data)) {
 225     if (num >= 4) {
 226       if (data[0] == _NET_WM_ORIENTATION_VERT)
 227         _layout.orientation = DesktopLayout::Vertical;
 228       if (data[3] == _NET_WM_TOPRIGHT)
 229         _layout.start_corner = DesktopLayout::TopRight;
 230       else if (data[3] == _NET_WM_BOTTOMRIGHT)
 231         _layout.start_corner = DesktopLayout::BottomRight;
 232       else if (data[3] == _NET_WM_BOTTOMLEFT)
 233         _layout.start_corner = DesktopLayout::BottomLeft;
 234
 235       // fill in a zero rows/columns
 236       if (!(data[1] == 0 && data[2] == 0)) { // both 0's is bad data..
 237         if (data[1] == 0) {
 238           data[1] = (_num_desktops + _num_desktops % data[2]) / data[2];
 239         } else if (data[2] == 0) {
 240           data[2] = (_num_desktops + _num_desktops % data[1]) / data[1];
 241         }
 242         _layout.columns = data[1];
 243         _layout.rows = data[2];
 244       }
 245
 246       // bounds checking
 247       if (_layout.orientation == DesktopLayout::Horizontal) {
 248         if (_layout.rows > _num_desktops) _layout.rows = _num_desktops;
 249         if (_layout.columns > (_num_desktops + _num_desktops % _layout.rows) /
 250             _layout.rows)
 251           _layout.columns = (_num_desktops + _num_desktops % _layout.rows) /
 252             _layout.rows;
 253       } else {
 254         if (_layout.columns > _num_desktops) _layout.columns = _num_desktops;
 255         if (_layout.rows > (_num_desktops + _num_desktops % _layout.columns) /
 256             _layout.columns)
 257           _layout.rows = (_num_desktops + _num_desktops % _layout.columns) /
 258             _layout.columns;
 259       }
 260     }
 261     delete [] data;
 262   }
 263 }
 264
 265 void Screen::updateStruts()
 266 {
 267   struct ApplyStrut {
 268     void operator()(otk::Strut &self, const otk::Strut &other) {
 269       self.left = std::max(self.left, other.left);
 270       self.right = std::max(self.right, other.right);
 271       self.top = std::max(self.top, other.top);
 272       self.bottom = std::max(self.bottom, other.bottom);
 273     }
 274   } apply;
 275
 276   StrutList::iterator sit, send = _struts.end();
 277   // reset them all
 278   for (sit = _struts.begin(); sit != send; ++sit)
 279     sit->left = sit->right = sit->top = sit->bottom = 0;
 280
 281   ClientList::const_iterator it, end = clients.end();
 282   for (it = clients.begin(); it != end; ++it) {
 283     if ((*it)->iconic()) continue; // these dont count in the strut
 284
 285     unsigned int desk = (*it)->desktop();
 286     const otk::Strut &s = (*it)->strut();
 287
 288     if (desk == 0xffffffff)
 289       for (unsigned int i = 0, e = _struts.size(); i < e; ++i)
 290         apply(_struts[i], s);
 291     else if (desk < _struts.size())
 292       apply(_struts[desk], s);
 293     else
 294       assert(false); // invalid desktop otherwise..
 295     // apply to the 'all desktops' strut
 296     apply(_struts.back(), s);
 297   }
 298   changeWorkArea();
 299 }
 300
 301
 302 void Screen::changeWorkArea()
 303 {
 304   unsigned long *dims = new unsigned long[4 * _num_desktops];
 305   for (unsigned int i = 0; i < _num_desktops + 1; ++i) {
 306     otk::Rect old_area = _area[i];
 307 /*
 308 #ifdef    XINERAMA
 309   // reset to the full areas
 310   if (isXineramaActive())
 311     xineramaUsableArea = getXineramaAreas();
 312 #endif // XINERAMA
 313 */
 314
 315     _area[i] = otk::Rect(_struts[i].left, _struts[i].top,
 316                          _info->size().width() - (_struts[i].left +
 317                                                   _struts[i].right),
 318                          _info->size().height() - (_struts[i].top +
 319                                                    _struts[i].bottom));
 320
 321 /*
 322 #ifdef    XINERAMA
 323   if (isXineramaActive()) {
 324     // keep each of the ximerama-defined areas inside the strut
 325     RectList::iterator xit, xend = xineramaUsableArea.end();
 326     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 327       if (xit->x() < usableArea.x()) {
 328         xit->setX(usableArea.x());
 329         xit->setWidth(xit->width() - usableArea.x());
 330       }
 331       if (xit->y() < usableArea.y()) {
 332         xit->setY(usableArea.y());
 333         xit->setHeight(xit->height() - usableArea.y());
 334       }
 335       if (xit->x() + xit->width() > usableArea.width())
 336         xit->setWidth(usableArea.width() - xit->x());
 337       if (xit->y() + xit->height() > usableArea.height())
 338         xit->setHeight(usableArea.height() - xit->y());
 339     }
 340   }
 341 #endif // XINERAMA
 342 */
 343     if (old_area != _area[i]) {
 344       // the area has changed, adjust all the maximized windows
 345       ClientList::iterator it, end = clients.end();
 346       for (it = clients.begin(); it != end; ++it)
 347         if (i < _num_desktops) {
 348           if ((*it)->desktop() == i)
 349             (*it)->remaximize();
 350         } else {
 351           // the 'all desktops' size
 352           if ((*it)->desktop() == 0xffffffff)
 353             (*it)->remaximize();
 354         }
 355     }
 356
 357     // don't set these for the 'all desktops' area
 358     if (i < _num_desktops) {
 359       dims[(i * 4) + 0] = _area[i].x();
 360       dims[(i * 4) + 1] = _area[i].y();
 361       dims[(i * 4) + 2] = _area[i].width();
 362       dims[(i * 4) + 3] = _area[i].height();
 363     }
 364   }
 365   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_workarea,
 366                      otk::Property::atoms.cardinal, dims, 4 * _num_desktops);
 367   delete [] dims;
 368 }
 369
 370
 371 void Screen::changeSupportedAtoms()
 372 {
 373   // create the netwm support window
 374   _supportwindow = XCreateSimpleWindow(**otk::display,
 375                                        _info->rootWindow(),
 376                                        0, 0, 1, 1, 0, 0, 0);
 377
 378   // set supporting window
 379   otk::Property::set(_info->rootWindow(),
 380                      otk::Property::atoms.net_supporting_wm_check,
 381                      otk::Property::atoms.window, _supportwindow);
 382
 383   //set properties on the supporting window
 384   otk::Property::set(_supportwindow, otk::Property::atoms.net_wm_name,
 385                      otk::Property::utf8, "Openbox");
 386   otk::Property::set(_supportwindow,
 387                      otk::Property::atoms.net_supporting_wm_check,
 388                      otk::Property::atoms.window, _supportwindow);
 389
 390
 391   Atom supported[] = {
 392     otk::Property::atoms.net_current_desktop,
 393     otk::Property::atoms.net_number_of_desktops,
 394     otk::Property::atoms.net_desktop_geometry,
 395     otk::Property::atoms.net_desktop_viewport,
 396     otk::Property::atoms.net_active_window,
 397     otk::Property::atoms.net_workarea,
 398     otk::Property::atoms.net_client_list,
 399     otk::Property::atoms.net_client_list_stacking,
 400     otk::Property::atoms.net_desktop_names,
 401     otk::Property::atoms.net_close_window,
 402     otk::Property::atoms.net_desktop_layout,
 403     otk::Property::atoms.net_showing_desktop,
 404     otk::Property::atoms.net_wm_name,
 405     otk::Property::atoms.net_wm_visible_name,
 406     otk::Property::atoms.net_wm_icon_name,
 407     otk::Property::atoms.net_wm_visible_icon_name,
 408     otk::Property::atoms.net_wm_desktop,
 409     otk::Property::atoms.net_wm_strut,
 410     otk::Property::atoms.net_wm_window_type,
 411     otk::Property::atoms.net_wm_window_type_desktop,
 412     otk::Property::atoms.net_wm_window_type_dock,
 413     otk::Property::atoms.net_wm_window_type_toolbar,
 414     otk::Property::atoms.net_wm_window_type_menu,
 415     otk::Property::atoms.net_wm_window_type_utility,
 416     otk::Property::atoms.net_wm_window_type_splash,
 417     otk::Property::atoms.net_wm_window_type_dialog,
 418     otk::Property::atoms.net_wm_window_type_normal,
 419 /*
 420     otk::Property::atoms.net_wm_moveresize,
 421     otk::Property::atoms.net_wm_moveresize_size_topleft,
 422     otk::Property::atoms.net_wm_moveresize_size_topright,
 423     otk::Property::atoms.net_wm_moveresize_size_bottomleft,
 424     otk::Property::atoms.net_wm_moveresize_size_bottomright,
 425     otk::Property::atoms.net_wm_moveresize_move,
 426 */
 427     otk::Property::atoms.net_wm_allowed_actions,
 428     otk::Property::atoms.net_wm_action_move,
 429     otk::Property::atoms.net_wm_action_resize,
 430     otk::Property::atoms.net_wm_action_minimize,
 431     otk::Property::atoms.net_wm_action_shade,
 432 /*    otk::Property::atoms.net_wm_action_stick,*/
 433     otk::Property::atoms.net_wm_action_maximize_horz,
 434     otk::Property::atoms.net_wm_action_maximize_vert,
 435     otk::Property::atoms.net_wm_action_fullscreen,
 436     otk::Property::atoms.net_wm_action_change_desktop,
 437     otk::Property::atoms.net_wm_action_close,
 438
 439     otk::Property::atoms.net_wm_state,
 440     otk::Property::atoms.net_wm_state_modal,
 441     otk::Property::atoms.net_wm_state_maximized_vert,
 442     otk::Property::atoms.net_wm_state_maximized_horz,
 443     otk::Property::atoms.net_wm_state_shaded,
 444     otk::Property::atoms.net_wm_state_skip_taskbar,
 445     otk::Property::atoms.net_wm_state_skip_pager,
 446     otk::Property::atoms.net_wm_state_hidden,
 447     otk::Property::atoms.net_wm_state_fullscreen,
 448     otk::Property::atoms.net_wm_state_above,
 449     otk::Property::atoms.net_wm_state_below,
 450   };
 451   const int num_supported = sizeof(supported)/sizeof(Atom);
 452
 453   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_supported,
 454                      otk::Property::atoms.atom, supported, num_supported);
 455 }
 456
 457
 458 void Screen::changeClientList()
 459 {
 460   Window *windows;
 461   unsigned int size = clients.size();
 462
 463   // create an array of the window ids
 464   if (size > 0) {
 465     Window *win_it;
 466
 467     windows = new Window[size];
 468     win_it = windows;
 469     ClientList::const_iterator it = clients.begin();
 470     const ClientList::const_iterator end = clients.end();
 471     for (; it != end; ++it, ++win_it)
 472       *win_it = (*it)->window();
 473   } else
 474     windows = (Window*) 0;
 475
 476   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_client_list,
 477                      otk::Property::atoms.window, windows, size);
 478
 479   if (size)
 480     delete [] windows;
 481
 482   changeStackingList();
 483 }
 484
 485
 486 void Screen::changeStackingList()
 487 {
 488   Window *windows;
 489   unsigned int size = _stacking.size();
 490
 491   assert(size == clients.size()); // just making sure.. :)
 492
 493
 494   // create an array of the window ids (from bottom to top, reverse order!)
 495   if (size > 0) {
 496     Window *win_it;
 497
 498     windows = new Window[size];
 499     win_it = windows;
 500     ClientList::const_reverse_iterator it = _stacking.rbegin();
 501     const ClientList::const_reverse_iterator end = _stacking.rend();
 502     for (; it != end; ++it, ++win_it)
 503       *win_it = (*it)->window();
 504   } else
 505     windows = (Window*) 0;
 506
 507   otk::Property::set(_info->rootWindow(),
 508                      otk::Property::atoms.net_client_list_stacking,
 509                      otk::Property::atoms.window, windows, size);
 510
 511   if (size)
 512     delete [] windows;
 513 }
 514
 515
 516 void Screen::manageWindow(Window window)
 517 {
 518   Client *client = 0;
 519   XWMHints *wmhint;
 520   XSetWindowAttributes attrib_set;
 521   XEvent e;
 522   XWindowAttributes attrib;
 523
 524   otk::display->grab();
 525
 526   // check if it has already been unmapped by the time we started mapping
 527   // the grab does a sync so we don't have to here
 528   if (XCheckTypedWindowEvent(**otk::display, window, DestroyNotify, &e) ||
 529       XCheckTypedWindowEvent(**otk::display, window, UnmapNotify, &e)) {
 530     XPutBackEvent(**otk::display, &e);
 531
 532     otk::display->ungrab();
 533     return; // don't manage it
 534   }
 535
 536   if (!XGetWindowAttributes(**otk::display, window, &attrib) ||
 537       attrib.override_redirect) {
 538     otk::display->ungrab();
 539     return; // don't manage it
 540   }
 541
 542   // is the window a docking app
 543   if ((wmhint = XGetWMHints(**otk::display, window))) {
 544     if ((wmhint->flags & StateHint) &&
 545         wmhint->initial_state == WithdrawnState) {
 546       //slit->addClient(w); // XXX: make dock apps work!
 547
 548       otk::display->ungrab();
 549       XFree(wmhint);
 550       return;
 551     }
 552     XFree(wmhint);
 553   }
 554
 555   // choose the events we want to receive on the CLIENT window
 556   attrib_set.event_mask = Client::event_mask;
 557   attrib_set.do_not_propagate_mask = Client::no_propagate_mask;
 558   XChangeWindowAttributes(**otk::display, window,
 559                           CWEventMask|CWDontPropagate, &attrib_set);
 560
 561   // create the Client class, which gets all of the hints on the window
 562   client = new Client(_number, window);
 563   // register for events
 564   openbox->registerHandler(window, client);
 565   // add to the wm's map
 566   openbox->addClient(window, client);
 567
 568   // we dont want a border on the client
 569   client->toggleClientBorder(false);
 570
 571   // specify that if we exit, the window should not be destroyed and should be
 572   // reparented back to root automatically
 573   XChangeSaveSet(**otk::display, window, SetModeInsert);
 574
 575   // create the decoration frame for the client window
 576   client->frame = new Frame(client);
 577   // register the plate for events (map req's)
 578   // this involves removing itself from the handler list first, since it is
 579   // auto added to the list, being a widget. we won't get any events on the
 580   // plate except for events for the client (SubstructureRedirectMask)
 581   openbox->clearHandler(client->frame->plate());
 582   openbox->registerHandler(client->frame->plate(), client);
 583
 584   // add to the wm's map
 585   Window *w = client->frame->allWindows();
 586   for (unsigned int i = 0; w[i]; ++i)
 587     openbox->addClient(w[i], client);
 588   delete [] w;
 589
 590   // reparent the client to the frame
 591   client->frame->grabClient();
 592
 593   if (openbox->state() != Openbox::State_Starting) {
 594     // position the window intelligenty .. hopefully :)
 595     // call the python PLACEWINDOW binding
 596     EventData data(_number, client, EventAction::PlaceWindow, 0);
 597     openbox->bindings()->fireEvent(&data);
 598   }
 599
 600   EventData ddata(_number, client, EventAction::DisplayingWindow, 0);
 601   openbox->bindings()->fireEvent(&ddata);
 602
 603   client->showhide();
 604
 605   client->applyStartupState();
 606
 607   otk::display->ungrab();
 608
 609   // add to the screen's list
 610   clients.push_back(client);
 611   // once the client is in the list, update our strut to include the new
 612   // client's (it is good that this happens after window placement!)
 613   updateStruts();
 614   // this puts into the stacking order, then raises it
 615   _stacking.push_back(client);
 616   raiseWindow(client);
 617   // update the root properties
 618   changeClientList();
 619
 620   openbox->bindings()->grabButtons(true, client);
 621
 622   EventData ndata(_number, client, EventAction::NewWindow, 0);
 623   openbox->bindings()->fireEvent(&ndata);
 624
 625 #ifdef DEBUG
 626   printf("Managed window 0x%lx frame 0x%lx\n",
 627          window, client->frame->window());
 628 #endif
 629 }
 630
 631
 632 void Screen::unmanageWindow(Client *client)
 633 {
 634   Frame *frame = client->frame;
 635
 636   // call the python CLOSEWINDOW binding
 637   EventData data(_number, client, EventAction::CloseWindow, 0);
 638   openbox->bindings()->fireEvent(&data);
 639
 640   openbox->bindings()->grabButtons(false, client);
 641
 642   // remove from the wm's map
 643   openbox->removeClient(client->window());
 644   Window *w = frame->allWindows();
 645   for (unsigned int i = 0; w[i]; ++i)
 646     openbox->addClient(w[i], client);
 647   delete [] w;
 648   // unregister for handling events
 649   openbox->clearHandler(client->window());
 650
 651   // remove the window from our save set
 652   XChangeSaveSet(**otk::display, client->window(), SetModeDelete);
 653
 654   // we dont want events no more
 655   XSelectInput(**otk::display, client->window(), NoEventMask);
 656
 657   frame->hide();
 658
 659   // give the client its border back
 660   client->toggleClientBorder(true);
 661
 662   // reparent the window out of the frame
 663   frame->releaseClient();
 664
 665 #ifdef DEBUG
 666   Window framewin = client->frame->window();
 667 #endif
 668   delete client->frame;
 669   client->frame = 0;
 670
 671   // remove from the stacking order
 672   _stacking.remove(client);
 673
 674   // remove from the screen's list
 675   clients.remove(client);
 676
 677   // once the client is out of the list, update our strut to remove it's
 678   // influence
 679   updateStruts();
 680
 681   // unset modal before dropping our focus
 682   client->_modal = false;
 683
 684   // unfocus the client (calls the focus callbacks)
 685   client->unfocus();
 686
 687 #ifdef DEBUG
 688   printf("Unmanaged window 0x%lx frame 0x%lx\n", client->window(), framewin);
 689 #endif
 690
 691   delete client;
 692
 693   // update the root properties
 694   changeClientList();
 695 }
 696
 697 void Screen::lowerWindow(Client *client)
 698 {
 699   Window wins[2];  // only ever restack 2 windows.
 700
 701   assert(!_stacking.empty()); // this would be bad
 702
 703   ClientList::iterator it = --_stacking.end();
 704   const ClientList::iterator end = _stacking.begin();
 705
 706   if (client->modal() && client->transientFor()) {
 707     // don't let a modal window lower below its transient_for
 708     it = std::find(_stacking.begin(), _stacking.end(), client->transientFor());
 709     assert(it != _stacking.end());
 710
 711     wins[0] = (it == _stacking.begin() ? _focuswindow :
 712                ((*(--ClientList::const_iterator(it)))->frame->window()));
 713     wins[1] = client->frame->window();
 714     if (wins[0] == wins[1]) return; // already right above the window
 715
 716     _stacking.remove(client);
 717     _stacking.insert(it, client);
 718   } else {
 719     for (; it != end && (*it)->layer() < client->layer(); --it);
 720     if (*it == client) return;          // already the bottom, return
 721
 722     wins[0] = (*it)->frame->window();
 723     wins[1] = client->frame->window();
 724
 725     _stacking.remove(client);
 726     _stacking.insert(++it, client);
 727   }
 728
 729   XRestackWindows(**otk::display, wins, 2);
 730   changeStackingList();
 731 }
 732
 733 void Screen::raiseWindow(Client *client)
 734 {
 735   Window wins[2];  // only ever restack 2 windows.
 736
 737   assert(!_stacking.empty()); // this would be bad
 738
 739   Client *m = client->findModalChild();
 740   // if we have a modal child, raise it instead, we'll go along tho later
 741   if (m) raiseWindow(m);
 742
 743   // remove the client before looking so we can't run into ourselves
 744   _stacking.remove(client);
 745
 746   ClientList::iterator it = _stacking.begin();
 747   const ClientList::iterator end = _stacking.end();
 748
 749   // the stacking list is from highest to lowest
 750   for (; it != end && ((*it)->layer() > client->layer() || m == *it); ++it);
 751
 752   /*
 753     if our new position is the top, we want to stack under the _focuswindow
 754     otherwise, we want to stack under the previous window in the stack.
 755   */
 756   wins[0] = (it == _stacking.begin() ? _focuswindow :
 757              ((*(--ClientList::const_iterator(it)))->frame->window()));
 758   wins[1] = client->frame->window();
 759
 760   _stacking.insert(it, client);
 761
 762   XRestackWindows(**otk::display, wins, 2);
 763
 764   changeStackingList();
 765 }
 766
 767 void Screen::changeDesktop(unsigned int desktop)
 768 {
 769   if (desktop >= _num_desktops) return;
 770
 771   printf("Moving to desktop %u\n", desktop);
 772
 773   unsigned int old = _desktop;
 774
 775   _desktop = desktop;
 776   otk::Property::set(_info->rootWindow(),
 777                      otk::Property::atoms.net_current_desktop,
 778                      otk::Property::atoms.cardinal, _desktop);
 779
 780   if (old == _desktop) return;
 781
 782   ClientList::iterator it, end = clients.end();
 783   for (it = clients.begin(); it != end; ++it)
 784     (*it)->showhide();
 785
 786   // force the callbacks to fire
 787   if (!openbox->focusedClient())
 788     openbox->setFocusedClient(0);
 789 }
 790
 791 void Screen::changeNumDesktops(unsigned int num)
 792 {
 793   assert(num > 0);
 794
 795   if (!(num > 0)) return;
 796
 797   // move windows on desktops that will no longer exist!
 798   ClientList::iterator it, end = clients.end();
 799   for (it = clients.begin(); it != end; ++it) {
 800     unsigned int d = (*it)->desktop();
 801     if (d >= num && d != 0xffffffff) {
 802       XEvent ce;
 803       ce.xclient.type = ClientMessage;
 804       ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 805       ce.xclient.display = **otk::display;
 806       ce.xclient.window = (*it)->window();
 807       ce.xclient.format = 32;
 808       ce.xclient.data.l[0] = num - 1;
 809       XSendEvent(**otk::display, _info->rootWindow(), False,
 810                  SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 811     }
 812   }
 813
 814   _num_desktops = num;
 815   otk::Property::set(_info->rootWindow(),
 816                      otk::Property::atoms.net_number_of_desktops,
 817                      otk::Property::atoms.cardinal, _num_desktops);
 818
 819   // set the viewport hint
 820   unsigned long *viewport = new unsigned long[_num_desktops * 2];
 821   memset(viewport, 0, sizeof(unsigned long) * _num_desktops * 2);
 822   otk::Property::set(_info->rootWindow(),
 823                      otk::Property::atoms.net_desktop_viewport,
 824                      otk::Property::atoms.cardinal,
 825                      viewport, _num_desktops * 2);
 826   delete [] viewport;
 827
 828   // change our struts/area to match
 829   _area.resize(_num_desktops + 1);
 830   _struts.resize(_num_desktops + 1);
 831   updateStruts();
 832
 833   // the number of rows/columns will differ
 834   updateDesktopLayout();
 835
 836   // change our desktop if we're on one that no longer exists!
 837   if (_desktop >= _num_desktops)
 838     changeDesktop(_num_desktops - 1);
 839 }
 840
 841
 842 void Screen::updateDesktopNames()
 843 {
 844   unsigned long num = (unsigned) -1;
 845
 846   if (!otk::Property::get(_info->rootWindow(),
 847                           otk::Property::atoms.net_desktop_names,
 848                           otk::Property::utf8, &num, &_desktop_names))
 849     _desktop_names.clear();
 850   while (_desktop_names.size() < _num_desktops)
 851     _desktop_names.push_back("Unnamed");
 852 }
 853
 854
 855 void Screen::setDesktopName(unsigned int i, const otk::ustring &name)
 856 {
 857   if (i >= _num_desktops) return;
 858
 859   otk::Property::StringVect newnames = _desktop_names;
 860   newnames[i] = name;
 861   otk::Property::set(_info->rootWindow(),
 862                      otk::Property::atoms.net_desktop_names,
 863                      otk::Property::utf8, newnames);
 864 }
 865
 866
 867 const otk::Rect& Screen::area(unsigned int desktop) const {
 868   assert(desktop < _num_desktops || desktop == 0xffffffff);
 869   if (desktop < _num_desktops)
 870     return _area[desktop];
 871   else
 872     return _area[_num_desktops];
 873 }
 874
 875 void Screen::installColormap(bool install) const
 876 {
 877   if (install)
 878     XInstallColormap(**otk::display, _info->colormap());
 879   else
 880     XUninstallColormap(**otk::display, _info->colormap());
 881 }
 882
 883 void Screen::showDesktop(bool show)
 884 {
 885   if (show == _showing_desktop) return; // no change
 886
 887   // save the window focus, and restore it when leaving the show-desktop mode
 888   static Window saved_focus = 0;
 889   if (show) {
 890     Client *c = openbox->focusedClient();
 891     if (c) saved_focus = c->window();
 892   } else {
 893     Client *f = openbox->focusedClient();
 894     if (!f || f->type() == Client::Type_Desktop) {
 895       Client *c = openbox->findClient(saved_focus);
 896       if (c) c->focus();
 897     }
 898   }
 899
 900   _showing_desktop = show;
 901   ClientList::iterator it, end = clients.end();
 902   for (it = clients.begin(); it != end; ++it) {
 903     if ((*it)->type() == Client::Type_Desktop) {
 904       if (show)
 905         (*it)->focus();
 906     } else
 907       (*it)->showhide();
 908   }
 909 }
 910
 911 void Screen::propertyHandler(const XPropertyEvent &e)
 912 {
 913   otk::EventHandler::propertyHandler(e);
 914
 915   // compress changes to a single property into a single change
 916   XEvent ce;
 917   while (XCheckTypedWindowEvent(**otk::display, _info->rootWindow(),
 918                                 e.type, &ce)) {
 919     // XXX: it would be nice to compress ALL changes to a property, not just
 920     //      changes in a row without other props between.
 921     if (ce.xproperty.atom != e.atom) {
 922       XPutBackEvent(**otk::display, &ce);
 923       break;
 924     }
 925   }
 926
 927   if (e.atom == otk::Property::atoms.net_desktop_names)
 928     updateDesktopNames();
 929   else if (e.atom == otk::Property::atoms.net_desktop_layout)
 930     updateDesktopLayout();
 931 }
 932
 933
 934 void Screen::clientMessageHandler(const XClientMessageEvent &e)
 935 {
 936   otk::EventHandler::clientMessageHandler(e);
 937
 938   if (e.format != 32) return;
 939
 940   if (e.message_type == otk::Property::atoms.net_current_desktop) {
 941     changeDesktop(e.data.l[0]);
 942   } else if (e.message_type == otk::Property::atoms.net_number_of_desktops) {
 943     changeNumDesktops(e.data.l[0]);
 944   } else if (e.message_type == otk::Property::atoms.net_showing_desktop) {
 945     showDesktop(e.data.l[0] != 0);
 946   }
 947 }
 948
 949
 950 void Screen::mapRequestHandler(const XMapRequestEvent &e)
 951 {
 952   otk::EventHandler::mapRequestHandler(e);
 953
 954 #ifdef    DEBUG
 955   printf("MapRequest for 0x%lx\n", e.window);
 956 #endif // DEBUG
 957
 958   Client *c = openbox->findClient(e.window);
 959   if (c) {
 960 #ifdef DEBUG
 961     printf("DEBUG: MAP REQUEST CAUGHT IN SCREEN. IGNORED.\n");
 962 #endif
 963   } else {
 964     if (_showing_desktop)
 965       showDesktop(false); // leave showing-the-desktop mode
 966     manageWindow(e.window);
 967   }
 968 }
 969
 970 }