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
  14 extern "C" {
  15 #ifdef    HAVE_UNISTD_H
  16 #  include <sys/types.h>
  17 #  include <unistd.h>
  18 #endif // HAVE_UNISTD_H
  19
  20 #include "gettext.h"
  21 #define _(str) gettext(str)
  22 }
  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   // initialize the screen's style
  70   otk::RenderStyle::setStyle(_number, _config.theme);
  71   otk::display->renderControl(_number)->
  72     drawRoot(*otk::RenderStyle::style(_number)->rootColor());
  73
  74   // set up notification of netwm support
  75   changeSupportedAtoms();
  76
  77   // Set the netwm properties for geometry
  78   unsigned long geometry[] = { _info->size().width(),
  79                                _info->size().height() };
  80   otk::Property::set(_info->rootWindow(),
  81                      otk::Property::atoms.net_desktop_geometry,
  82                      otk::Property::atoms.cardinal, geometry, 2);
  83
  84   // Set the net_desktop_names property
  85   otk::Property::set(_info->rootWindow(),
  86                      otk::Property::atoms.net_desktop_names,
  87                      otk::Property::utf8, _config.desktop_names);
  88   // the above set() will cause the updateDesktopNames to fire right away so
  89   // we have a list of desktop names
  90
  91   _desktop = 0;
  92
  93   changeNumDesktops(_config.num_desktops); // set the hint
  94
  95   changeDesktop(0); // set the hint
  96
  97   // don't start in showing-desktop mode
  98   _showing_desktop = false;
  99   otk::Property::set(_info->rootWindow(),
 100                      otk::Property::atoms.net_showing_desktop,
 101                      otk::Property::atoms.cardinal, 0);
 102
 103   // create the window which gets focus when no clients get it
 104   XSetWindowAttributes attr;
 105   attr.override_redirect = true;
 106   _focuswindow = XCreateWindow(**otk::display, _info->rootWindow(),
 107                                -100, -100, 1, 1, 0, 0, InputOnly,
 108                                _info->visual(), CWOverrideRedirect, &attr);
 109   XMapRaised(**otk::display, _focuswindow);
 110
 111   // these may be further updated if any pre-existing windows are found in
 112   // the manageExising() function
 113   changeClientList();  // initialize the client lists, which will be empty
 114
 115   updateDesktopLayout();
 116
 117   // register this class as the event handler for the root window
 118   openbox->registerHandler(_info->rootWindow(), this);
 119
 120   // call the python Startup callbacks
 121   EventData data(_number, 0, EventAction::Startup, 0);
 122   openbox->bindings()->fireEvent(&data);
 123 }
 124
 125
 126 Screen::~Screen()
 127 {
 128   if (! _managed) return;
 129
 130   XSelectInput(**otk::display, _info->rootWindow(), NoEventMask);
 131
 132   // unmanage all windows
 133   while (!clients.empty())
 134     unmanageWindow(clients.front());
 135
 136   // call the python Shutdown callbacks
 137   EventData data(_number, 0, EventAction::Shutdown, 0);
 138   openbox->bindings()->fireEvent(&data);
 139
 140   XDestroyWindow(**otk::display, _focuswindow);
 141   XDestroyWindow(**otk::display, _supportwindow);
 142 }
 143
 144
 145 void Screen::manageExisting()
 146 {
 147   unsigned int i, j, nchild;
 148   Window r, p, *children;
 149   XQueryTree(**otk::display, _info->rootWindow(), &r, &p,
 150              &children, &nchild);
 151
 152   // preen the window list of all icon windows... for better dockapp support
 153   for (i = 0; i < nchild; i++) {
 154     if (children[i] == None) continue;
 155
 156     XWMHints *wmhints = XGetWMHints(**otk::display,
 157                                     children[i]);
 158
 159     if (wmhints) {
 160       if ((wmhints->flags & IconWindowHint) &&
 161           (wmhints->icon_window != children[i])) {
 162         for (j = 0; j < nchild; j++) {
 163           if (children[j] == wmhints->icon_window) {
 164             children[j] = None;
 165             break;
 166           }
 167         }
 168       }
 169
 170       XFree(wmhints);
 171     }
 172   }
 173
 174   // manage shown windows
 175   for (i = 0; i < nchild; ++i) {
 176     if (children[i] == None)
 177       continue;
 178
 179     XWindowAttributes attrib;
 180     if (XGetWindowAttributes(**otk::display, children[i], &attrib)) {
 181       if (attrib.override_redirect) continue;
 182
 183       if (attrib.map_state != IsUnmapped) {
 184         manageWindow(children[i]);
 185       }
 186     }
 187   }
 188
 189   XFree(children);
 190 }
 191
 192 void Screen::updateDesktopLayout()
 193 {
 194   //const unsigned long _NET_WM_ORIENTATION_HORZ = 0;
 195   const unsigned long _NET_WM_ORIENTATION_VERT = 1;
 196   //const unsigned long _NET_WM_TOPLEFT = 0;
 197   const unsigned long _NET_WM_TOPRIGHT = 1;
 198   const unsigned long _NET_WM_BOTTOMRIGHT = 2;
 199   const unsigned long _NET_WM_BOTTOMLEFT = 3;
 200
 201   // defaults
 202   _layout.orientation = DesktopLayout::Horizontal;
 203   _layout.start_corner = DesktopLayout::TopLeft;
 204   _layout.rows = 1;
 205   _layout.columns = _num_desktops;
 206
 207   unsigned long *data, num = 4;
 208   if (otk::Property::get(_info->rootWindow(),
 209                          otk::Property::atoms.net_desktop_layout,
 210                          otk::Property::atoms.cardinal,
 211                          &num, &data)) {
 212     if (num >= 4) {
 213       if (data[0] == _NET_WM_ORIENTATION_VERT)
 214         _layout.orientation = DesktopLayout::Vertical;
 215       if (data[3] == _NET_WM_TOPRIGHT)
 216         _layout.start_corner = DesktopLayout::TopRight;
 217       else if (data[3] == _NET_WM_BOTTOMRIGHT)
 218         _layout.start_corner = DesktopLayout::BottomRight;
 219       else if (data[3] == _NET_WM_BOTTOMLEFT)
 220         _layout.start_corner = DesktopLayout::BottomLeft;
 221
 222       // fill in a zero rows/columns
 223       if (!(data[1] == 0 && data[2] == 0)) { // both 0's is bad data..
 224         if (data[1] == 0) {
 225           data[1] = (_num_desktops + _num_desktops % data[2]) / data[2];
 226         } else if (data[2] == 0) {
 227           data[2] = (_num_desktops + _num_desktops % data[1]) / data[1];
 228         }
 229         _layout.columns = data[1];
 230         _layout.rows = data[2];
 231       }
 232
 233       // bounds checking
 234       if (_layout.orientation == DesktopLayout::Horizontal) {
 235         if (_layout.rows > _num_desktops) _layout.rows = _num_desktops;
 236         if (_layout.columns > (_num_desktops + _num_desktops % _layout.rows) /
 237             _layout.rows)
 238           _layout.columns = (_num_desktops + _num_desktops % _layout.rows) /
 239             _layout.rows;
 240       } else {
 241         if (_layout.columns > _num_desktops) _layout.columns = _num_desktops;
 242         if (_layout.rows > (_num_desktops + _num_desktops % _layout.columns) /
 243             _layout.columns)
 244           _layout.rows = (_num_desktops + _num_desktops % _layout.columns) /
 245             _layout.columns;
 246       }
 247     }
 248     delete [] data;
 249   }
 250 }
 251
 252 void Screen::updateStruts()
 253 {
 254   struct ApplyStrut {
 255     void operator()(otk::Strut &self, const otk::Strut &other) {
 256       self.left = std::max(self.left, other.left);
 257       self.right = std::max(self.right, other.right);
 258       self.top = std::max(self.top, other.top);
 259       self.bottom = std::max(self.bottom, other.bottom);
 260     }
 261   } apply;
 262
 263   StrutList::iterator sit, send = _struts.end();
 264   // reset them all
 265   for (sit = _struts.begin(); sit != send; ++sit)
 266     sit->left = sit->right = sit->top = sit->bottom = 0;
 267
 268   ClientList::const_iterator it, end = clients.end();
 269   for (it = clients.begin(); it != end; ++it) {
 270     if ((*it)->iconic()) continue; // these dont count in the strut
 271
 272     unsigned int desk = (*it)->desktop();
 273     const otk::Strut &s = (*it)->strut();
 274
 275     if (desk == 0xffffffff)
 276       for (unsigned int i = 0, e = _struts.size(); i < e; ++i)
 277         apply(_struts[i], s);
 278     else if (desk < _struts.size())
 279       apply(_struts[desk], s);
 280     else
 281       assert(false); // invalid desktop otherwise..
 282     // apply to the 'all desktops' strut
 283     apply(_struts.back(), s);
 284   }
 285   changeWorkArea();
 286 }
 287
 288
 289 void Screen::changeWorkArea()
 290 {
 291   unsigned long *dims = new unsigned long[4 * _num_desktops];
 292   for (unsigned int i = 0; i < _num_desktops + 1; ++i) {
 293     otk::Rect old_area = _area[i];
 294 /*
 295 #ifdef    XINERAMA
 296   // reset to the full areas
 297   if (isXineramaActive())
 298     xineramaUsableArea = getXineramaAreas();
 299 #endif // XINERAMA
 300 */
 301
 302     _area[i] = otk::Rect(_struts[i].left, _struts[i].top,
 303                          _info->size().width() - (_struts[i].left +
 304                                                   _struts[i].right),
 305                          _info->size().height() - (_struts[i].top +
 306                                                    _struts[i].bottom));
 307
 308 /*
 309 #ifdef    XINERAMA
 310   if (isXineramaActive()) {
 311     // keep each of the ximerama-defined areas inside the strut
 312     RectList::iterator xit, xend = xineramaUsableArea.end();
 313     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 314       if (xit->x() < usableArea.x()) {
 315         xit->setX(usableArea.x());
 316         xit->setWidth(xit->width() - usableArea.x());
 317       }
 318       if (xit->y() < usableArea.y()) {
 319         xit->setY(usableArea.y());
 320         xit->setHeight(xit->height() - usableArea.y());
 321       }
 322       if (xit->x() + xit->width() > usableArea.width())
 323         xit->setWidth(usableArea.width() - xit->x());
 324       if (xit->y() + xit->height() > usableArea.height())
 325         xit->setHeight(usableArea.height() - xit->y());
 326     }
 327   }
 328 #endif // XINERAMA
 329 */
 330     if (old_area != _area[i]) {
 331       // the area has changed, adjust all the maximized windows
 332       ClientList::iterator it, end = clients.end();
 333       for (it = clients.begin(); it != end; ++it)
 334         if (i < _num_desktops) {
 335           if ((*it)->desktop() == i)
 336             (*it)->remaximize();
 337         } else {
 338           // the 'all desktops' size
 339           if ((*it)->desktop() == 0xffffffff)
 340             (*it)->remaximize();
 341         }
 342     }
 343
 344     // don't set these for the 'all desktops' area
 345     if (i < _num_desktops) {
 346       dims[(i * 4) + 0] = _area[i].x();
 347       dims[(i * 4) + 1] = _area[i].y();
 348       dims[(i * 4) + 2] = _area[i].width();
 349       dims[(i * 4) + 3] = _area[i].height();
 350     }
 351   }
 352   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_workarea,
 353                      otk::Property::atoms.cardinal, dims, 4 * _num_desktops);
 354   delete [] dims;
 355 }
 356
 357
 358 void Screen::changeSupportedAtoms()
 359 {
 360   // create the netwm support window
 361   _supportwindow = XCreateSimpleWindow(**otk::display,
 362                                        _info->rootWindow(),
 363                                        0, 0, 1, 1, 0, 0, 0);
 364
 365   // set supporting window
 366   otk::Property::set(_info->rootWindow(),
 367                      otk::Property::atoms.net_supporting_wm_check,
 368                      otk::Property::atoms.window, _supportwindow);
 369
 370   //set properties on the supporting window
 371   otk::Property::set(_supportwindow, otk::Property::atoms.net_wm_name,
 372                      otk::Property::utf8, "Openbox");
 373   otk::Property::set(_supportwindow,
 374                      otk::Property::atoms.net_supporting_wm_check,
 375                      otk::Property::atoms.window, _supportwindow);
 376
 377
 378   Atom supported[] = {
 379     otk::Property::atoms.net_current_desktop,
 380     otk::Property::atoms.net_number_of_desktops,
 381     otk::Property::atoms.net_desktop_geometry,
 382     otk::Property::atoms.net_desktop_viewport,
 383     otk::Property::atoms.net_active_window,
 384     otk::Property::atoms.net_workarea,
 385     otk::Property::atoms.net_client_list,
 386     otk::Property::atoms.net_client_list_stacking,
 387     otk::Property::atoms.net_desktop_names,
 388     otk::Property::atoms.net_close_window,
 389     otk::Property::atoms.net_desktop_layout,
 390     otk::Property::atoms.net_showing_desktop,
 391     otk::Property::atoms.net_wm_name,
 392     otk::Property::atoms.net_wm_visible_name,
 393     otk::Property::atoms.net_wm_icon_name,
 394     otk::Property::atoms.net_wm_visible_icon_name,
 395     otk::Property::atoms.net_wm_desktop,
 396     otk::Property::atoms.net_wm_strut,
 397     otk::Property::atoms.net_wm_window_type,
 398     otk::Property::atoms.net_wm_window_type_desktop,
 399     otk::Property::atoms.net_wm_window_type_dock,
 400     otk::Property::atoms.net_wm_window_type_toolbar,
 401     otk::Property::atoms.net_wm_window_type_menu,
 402     otk::Property::atoms.net_wm_window_type_utility,
 403     otk::Property::atoms.net_wm_window_type_splash,
 404     otk::Property::atoms.net_wm_window_type_dialog,
 405     otk::Property::atoms.net_wm_window_type_normal,
 406 /*
 407     otk::Property::atoms.net_wm_moveresize,
 408     otk::Property::atoms.net_wm_moveresize_size_topleft,
 409     otk::Property::atoms.net_wm_moveresize_size_topright,
 410     otk::Property::atoms.net_wm_moveresize_size_bottomleft,
 411     otk::Property::atoms.net_wm_moveresize_size_bottomright,
 412     otk::Property::atoms.net_wm_moveresize_move,
 413 */
 414     otk::Property::atoms.net_wm_allowed_actions,
 415     otk::Property::atoms.net_wm_action_move,
 416     otk::Property::atoms.net_wm_action_resize,
 417     otk::Property::atoms.net_wm_action_minimize,
 418     otk::Property::atoms.net_wm_action_shade,
 419 /*    otk::Property::atoms.net_wm_action_stick,*/
 420     otk::Property::atoms.net_wm_action_maximize_horz,
 421     otk::Property::atoms.net_wm_action_maximize_vert,
 422     otk::Property::atoms.net_wm_action_fullscreen,
 423     otk::Property::atoms.net_wm_action_change_desktop,
 424     otk::Property::atoms.net_wm_action_close,
 425
 426     otk::Property::atoms.net_wm_state,
 427     otk::Property::atoms.net_wm_state_modal,
 428     otk::Property::atoms.net_wm_state_maximized_vert,
 429     otk::Property::atoms.net_wm_state_maximized_horz,
 430     otk::Property::atoms.net_wm_state_shaded,
 431     otk::Property::atoms.net_wm_state_skip_taskbar,
 432     otk::Property::atoms.net_wm_state_skip_pager,
 433     otk::Property::atoms.net_wm_state_hidden,
 434     otk::Property::atoms.net_wm_state_fullscreen,
 435     otk::Property::atoms.net_wm_state_above,
 436     otk::Property::atoms.net_wm_state_below,
 437   };
 438   const int num_supported = sizeof(supported)/sizeof(Atom);
 439
 440   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_supported,
 441                      otk::Property::atoms.atom, supported, num_supported);
 442 }
 443
 444
 445 void Screen::changeClientList()
 446 {
 447   Window *windows;
 448   unsigned int size = clients.size();
 449
 450   // create an array of the window ids
 451   if (size > 0) {
 452     Window *win_it;
 453
 454     windows = new Window[size];
 455     win_it = windows;
 456     ClientList::const_iterator it = clients.begin();
 457     const ClientList::const_iterator end = clients.end();
 458     for (; it != end; ++it, ++win_it)
 459       *win_it = (*it)->window();
 460   } else
 461     windows = (Window*) 0;
 462
 463   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_client_list,
 464                      otk::Property::atoms.window, windows, size);
 465
 466   if (size)
 467     delete [] windows;
 468
 469   changeStackingList();
 470 }
 471
 472
 473 void Screen::changeStackingList()
 474 {
 475   Window *windows;
 476   unsigned int size = _stacking.size();
 477
 478   assert(size == clients.size()); // just making sure.. :)
 479
 480
 481   // create an array of the window ids (from bottom to top, reverse order!)
 482   if (size > 0) {
 483     Window *win_it;
 484
 485     windows = new Window[size];
 486     win_it = windows;
 487     ClientList::const_reverse_iterator it = _stacking.rbegin();
 488     const ClientList::const_reverse_iterator end = _stacking.rend();
 489     for (; it != end; ++it, ++win_it)
 490       *win_it = (*it)->window();
 491   } else
 492     windows = (Window*) 0;
 493
 494   otk::Property::set(_info->rootWindow(),
 495                      otk::Property::atoms.net_client_list_stacking,
 496                      otk::Property::atoms.window, windows, size);
 497
 498   if (size)
 499     delete [] windows;
 500 }
 501
 502
 503 void Screen::manageWindow(Window window)
 504 {
 505   Client *client = 0;
 506   XWMHints *wmhint;
 507   XSetWindowAttributes attrib_set;
 508   XEvent e;
 509   XWindowAttributes attrib;
 510
 511   otk::display->grab();
 512
 513   // check if it has already been unmapped by the time we started mapping
 514   // the grab does a sync so we don't have to here
 515   if (XCheckTypedWindowEvent(**otk::display, window, DestroyNotify, &e) ||
 516       XCheckTypedWindowEvent(**otk::display, window, UnmapNotify, &e)) {
 517     XPutBackEvent(**otk::display, &e);
 518
 519     otk::display->ungrab();
 520     return; // don't manage it
 521   }
 522
 523   if (!XGetWindowAttributes(**otk::display, window, &attrib) ||
 524       attrib.override_redirect) {
 525     otk::display->ungrab();
 526     return; // don't manage it
 527   }
 528
 529   // is the window a docking app
 530   if ((wmhint = XGetWMHints(**otk::display, window))) {
 531     if ((wmhint->flags & StateHint) &&
 532         wmhint->initial_state == WithdrawnState) {
 533       //slit->addClient(w); // XXX: make dock apps work!
 534
 535       otk::display->ungrab();
 536       XFree(wmhint);
 537       return;
 538     }
 539     XFree(wmhint);
 540   }
 541
 542   // choose the events we want to receive on the CLIENT window
 543   attrib_set.event_mask = Client::event_mask;
 544   attrib_set.do_not_propagate_mask = Client::no_propagate_mask;
 545   XChangeWindowAttributes(**otk::display, window,
 546                           CWEventMask|CWDontPropagate, &attrib_set);
 547
 548   // create the Client class, which gets all of the hints on the window
 549   client = new Client(_number, window);
 550   // register for events
 551   openbox->registerHandler(window, client);
 552   // add to the wm's map
 553   openbox->addClient(window, client);
 554
 555   // we dont want a border on the client
 556   client->toggleClientBorder(false);
 557
 558   // specify that if we exit, the window should not be destroyed and should be
 559   // reparented back to root automatically
 560   XChangeSaveSet(**otk::display, window, SetModeInsert);
 561
 562   // create the decoration frame for the client window
 563   client->frame = new Frame(client);
 564   // register the plate for events (map req's)
 565   // this involves removing itself from the handler list first, since it is
 566   // auto added to the list, being a widget. we won't get any events on the
 567   // plate except for events for the client (SubstructureRedirectMask)
 568   openbox->clearHandler(client->frame->plate());
 569   openbox->registerHandler(client->frame->plate(), client);
 570
 571   // add to the wm's map
 572   Window *w = client->frame->allWindows();
 573   for (unsigned int i = 0; w[i]; ++i)
 574     openbox->addClient(w[i], client);
 575   delete [] w;
 576
 577   // reparent the client to the frame
 578   client->frame->grabClient();
 579
 580   if (openbox->state() != Openbox::State_Starting) {
 581     // position the window intelligenty .. hopefully :)
 582     // call the python PLACEWINDOW binding
 583     EventData data(_number, client, EventAction::PlaceWindow, 0);
 584     openbox->bindings()->fireEvent(&data);
 585   }
 586
 587   EventData ddata(_number, client, EventAction::DisplayingWindow, 0);
 588   openbox->bindings()->fireEvent(&ddata);
 589
 590   client->showhide();
 591
 592   client->applyStartupState();
 593
 594   otk::display->ungrab();
 595
 596   // add to the screen's list
 597   clients.push_back(client);
 598   // once the client is in the list, update our strut to include the new
 599   // client's (it is good that this happens after window placement!)
 600   updateStruts();
 601   // this puts into the stacking order, then raises it
 602   _stacking.push_back(client);
 603   raiseWindow(client);
 604   // update the root properties
 605   changeClientList();
 606
 607   openbox->bindings()->grabButtons(true, client);
 608
 609   EventData ndata(_number, client, EventAction::NewWindow, 0);
 610   openbox->bindings()->fireEvent(&ndata);
 611
 612 #ifdef DEBUG
 613   printf("Managed window 0x%lx frame 0x%lx\n",
 614          window, client->frame->window());
 615 #endif
 616 }
 617
 618
 619 void Screen::unmanageWindow(Client *client)
 620 {
 621   Frame *frame = client->frame;
 622
 623   // call the python CLOSEWINDOW binding
 624   EventData data(_number, client, EventAction::CloseWindow, 0);
 625   openbox->bindings()->fireEvent(&data);
 626
 627   openbox->bindings()->grabButtons(false, client);
 628
 629   // remove from the wm's map
 630   openbox->removeClient(client->window());
 631   Window *w = frame->allWindows();
 632   for (unsigned int i = 0; w[i]; ++i)
 633     openbox->addClient(w[i], client);
 634   delete [] w;
 635   // unregister for handling events
 636   openbox->clearHandler(client->window());
 637
 638   // remove the window from our save set
 639   XChangeSaveSet(**otk::display, client->window(), SetModeDelete);
 640
 641   // we dont want events no more
 642   XSelectInput(**otk::display, client->window(), NoEventMask);
 643
 644   frame->hide();
 645
 646   // give the client its border back
 647   client->toggleClientBorder(true);
 648
 649   // reparent the window out of the frame
 650   frame->releaseClient();
 651
 652 #ifdef DEBUG
 653   Window framewin = client->frame->window();
 654 #endif
 655   delete client->frame;
 656   client->frame = 0;
 657
 658   // remove from the stacking order
 659   _stacking.remove(client);
 660
 661   // remove from the screen's list
 662   clients.remove(client);
 663
 664   // once the client is out of the list, update our strut to remove it's
 665   // influence
 666   updateStruts();
 667
 668   // unset modal before dropping our focus
 669   client->_modal = false;
 670
 671   // unfocus the client (calls the focus callbacks)
 672   if (client->focused()) client->unfocus();
 673
 674 #ifdef DEBUG
 675   printf("Unmanaged window 0x%lx frame 0x%lx\n", client->window(), framewin);
 676 #endif
 677
 678   delete client;
 679
 680   // update the root properties
 681   changeClientList();
 682 }
 683
 684 void Screen::lowerWindow(Client *client)
 685 {
 686   Window wins[2];  // only ever restack 2 windows.
 687
 688   assert(!_stacking.empty()); // this would be bad
 689
 690   ClientList::iterator it = --_stacking.end();
 691   const ClientList::iterator end = _stacking.begin();
 692
 693   if (client->modal() && client->transientFor()) {
 694     // don't let a modal window lower below its transient_for
 695     it = std::find(_stacking.begin(), _stacking.end(), client->transientFor());
 696     assert(it != _stacking.end());
 697
 698     wins[0] = (it == _stacking.begin() ? _focuswindow :
 699                ((*(--ClientList::const_iterator(it)))->frame->window()));
 700     wins[1] = client->frame->window();
 701     if (wins[0] == wins[1]) return; // already right above the window
 702
 703     _stacking.remove(client);
 704     _stacking.insert(it, client);
 705   } else {
 706     for (; it != end && (*it)->layer() < client->layer(); --it);
 707     if (*it == client) return;          // already the bottom, return
 708
 709     wins[0] = (*it)->frame->window();
 710     wins[1] = client->frame->window();
 711
 712     _stacking.remove(client);
 713     _stacking.insert(++it, client);
 714   }
 715
 716   XRestackWindows(**otk::display, wins, 2);
 717   changeStackingList();
 718 }
 719
 720 void Screen::raiseWindow(Client *client)
 721 {
 722   Window wins[2];  // only ever restack 2 windows.
 723
 724   assert(!_stacking.empty()); // this would be bad
 725
 726   Client *m = client->findModalChild();
 727   // if we have a modal child, raise it instead, we'll go along tho later
 728   if (m) raiseWindow(m);
 729
 730   // remove the client before looking so we can't run into ourselves
 731   _stacking.remove(client);
 732
 733   ClientList::iterator it = _stacking.begin();
 734   const ClientList::iterator end = _stacking.end();
 735
 736   // the stacking list is from highest to lowest
 737   for (; it != end && ((*it)->layer() > client->layer() || m == *it); ++it);
 738
 739   /*
 740     if our new position is the top, we want to stack under the _focuswindow
 741     otherwise, we want to stack under the previous window in the stack.
 742   */
 743   wins[0] = (it == _stacking.begin() ? _focuswindow :
 744              ((*(--ClientList::const_iterator(it)))->frame->window()));
 745   wins[1] = client->frame->window();
 746
 747   _stacking.insert(it, client);
 748
 749   XRestackWindows(**otk::display, wins, 2);
 750
 751   changeStackingList();
 752 }
 753
 754 void Screen::changeDesktop(unsigned int desktop)
 755 {
 756   if (desktop >= _num_desktops) return;
 757
 758   printf("Moving to desktop %u\n", desktop);
 759
 760   unsigned int old = _desktop;
 761
 762   _desktop = desktop;
 763   otk::Property::set(_info->rootWindow(),
 764                      otk::Property::atoms.net_current_desktop,
 765                      otk::Property::atoms.cardinal, _desktop);
 766
 767   if (old == _desktop) return;
 768
 769   ClientList::iterator it, end = clients.end();
 770   for (it = clients.begin(); it != end; ++it)
 771     (*it)->showhide();
 772
 773   // force the callbacks to fire
 774   if (!openbox->focusedClient())
 775     openbox->setFocusedClient(0);
 776 }
 777
 778 void Screen::changeNumDesktops(unsigned int num)
 779 {
 780   assert(num > 0);
 781
 782   if (!(num > 0)) return;
 783
 784   // move windows on desktops that will no longer exist!
 785   ClientList::iterator it, end = clients.end();
 786   for (it = clients.begin(); it != end; ++it) {
 787     unsigned int d = (*it)->desktop();
 788     if (d >= num && d != 0xffffffff) {
 789       XEvent ce;
 790       ce.xclient.type = ClientMessage;
 791       ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 792       ce.xclient.display = **otk::display;
 793       ce.xclient.window = (*it)->window();
 794       ce.xclient.format = 32;
 795       ce.xclient.data.l[0] = num - 1;
 796       XSendEvent(**otk::display, _info->rootWindow(), False,
 797                  SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 798     }
 799   }
 800
 801   _num_desktops = num;
 802   otk::Property::set(_info->rootWindow(),
 803                      otk::Property::atoms.net_number_of_desktops,
 804                      otk::Property::atoms.cardinal, _num_desktops);
 805
 806   // set the viewport hint
 807   unsigned long *viewport = new unsigned long[_num_desktops * 2];
 808   memset(viewport, 0, sizeof(unsigned long) * _num_desktops * 2);
 809   otk::Property::set(_info->rootWindow(),
 810                      otk::Property::atoms.net_desktop_viewport,
 811                      otk::Property::atoms.cardinal,
 812                      viewport, _num_desktops * 2);
 813   delete [] viewport;
 814
 815   // change our struts/area to match
 816   _area.resize(_num_desktops + 1);
 817   _struts.resize(_num_desktops + 1);
 818   updateStruts();
 819
 820   // the number of rows/columns will differ
 821   updateDesktopLayout();
 822
 823   // change our desktop if we're on one that no longer exists!
 824   if (_desktop >= _num_desktops)
 825     changeDesktop(_num_desktops - 1);
 826 }
 827
 828
 829 void Screen::updateDesktopNames()
 830 {
 831   unsigned long num = (unsigned) -1;
 832
 833   if (!otk::Property::get(_info->rootWindow(),
 834                           otk::Property::atoms.net_desktop_names,
 835                           otk::Property::utf8, &num, &_desktop_names))
 836     _desktop_names.clear();
 837   while (_desktop_names.size() < _num_desktops)
 838     _desktop_names.push_back("Unnamed");
 839 }
 840
 841
 842 void Screen::setDesktopName(unsigned int i, const otk::ustring &name)
 843 {
 844   if (i >= _num_desktops) return;
 845
 846   otk::Property::StringVect newnames = _desktop_names;
 847   newnames[i] = name;
 848   otk::Property::set(_info->rootWindow(),
 849                      otk::Property::atoms.net_desktop_names,
 850                      otk::Property::utf8, newnames);
 851 }
 852
 853 otk::ustring Screen::desktopName(unsigned int i) const
 854 {
 855   if (i >= _num_desktops) return "";
 856   return _desktop_names[i];
 857 }
 858
 859 const otk::Rect& Screen::area(unsigned int desktop) const {
 860   assert(desktop < _num_desktops || desktop == 0xffffffff);
 861   if (desktop < _num_desktops)
 862     return _area[desktop];
 863   else
 864     return _area[_num_desktops];
 865 }
 866
 867 void Screen::installColormap(bool install) const
 868 {
 869   if (install)
 870     XInstallColormap(**otk::display, _info->colormap());
 871   else
 872     XUninstallColormap(**otk::display, _info->colormap());
 873 }
 874
 875 void Screen::showDesktop(bool show)
 876 {
 877   if (show == _showing_desktop) return; // no change
 878
 879   // save the window focus, and restore it when leaving the show-desktop mode
 880   static Window saved_focus = 0;
 881   if (show) {
 882     Client *c = openbox->focusedClient();
 883     if (c) saved_focus = c->window();
 884   }
 885
 886   _showing_desktop = show;
 887
 888   ClientList::iterator it, end = clients.end();
 889   for (it = clients.begin(); it != end; ++it) {
 890     if ((*it)->type() == Client::Type_Desktop) {
 891       if (show)
 892         (*it)->focus();
 893     } else
 894       (*it)->showhide();
 895   }
 896
 897   if (!show) {
 898     Client *f = openbox->focusedClient();
 899     if (!f || f->type() == Client::Type_Desktop) {
 900       Client *c = openbox->findClient(saved_focus);
 901       if (c) c->focus();
 902     }
 903   }
 904
 905   otk::Property::set(_info->rootWindow(),
 906                      otk::Property::atoms.net_showing_desktop,
 907                      otk::Property::atoms.cardinal,
 908                      show ? 1 : 0);
 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 }