src/screen.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #include "config.h"
   4
   5 extern "C" {
   6 #ifdef    HAVE_UNISTD_H
   7 #  include <sys/types.h>
   8 #  include <unistd.h>
   9 #endif // HAVE_UNISTD_H
  10
  11 #include "gettext.h"
  12 #define _(str) gettext(str)
  13 }
  14
  15 #include "screen.hh"
  16 #include "client.hh"
  17 #include "openbox.hh"
  18 #include "frame.hh"
  19 #include "bindings.hh"
  20 #include "python.hh"
  21 #include "otk/display.hh"
  22 #include "otk/property.hh"
  23
  24 #include <vector>
  25 #include <algorithm>
  26 #include <cstdio>
  27 #include <cstring>
  28
  29 static bool running;
  30 static int anotherWMRunning(Display *display, XErrorEvent *) {
  31   printf(_("Another window manager already running on display %s.\n"),
  32          DisplayString(display));
  33   running = true;
  34   return -1;
  35 }
  36
  37
  38 namespace ob {
  39
  40
  41 Screen::Screen(int screen)
  42   : _number(screen)
  43 {
  44   assert(screen >= 0); assert(screen < ScreenCount(**otk::display));
  45   _info = otk::display->screenInfo(screen);
  46
  47   ::running = false;
  48   XErrorHandler old = XSetErrorHandler(::anotherWMRunning);
  49   XSelectInput(**otk::display, _info->rootWindow(),
  50                Screen::event_mask);
  51   XSync(**otk::display, false);
  52   XSetErrorHandler(old);
  53
  54   _managed = !::running;
  55   if (! _managed) return; // was unable to manage the screen
  56
  57 #ifdef DEBUG
  58   printf(_("Managing screen %d: visual 0x%lx, depth %d\n"),
  59          _number, XVisualIDFromVisual(_info->visual()), _info->depth());
  60 #endif
  61
  62   otk::Property::set(_info->rootWindow(), otk::Property::atoms.openbox_pid,
  63                      otk::Property::atoms.cardinal, (unsigned long) getpid());
  64
  65   // set the mouse cursor for the root window (the default cursor)
  66   XDefineCursor(**otk::display, _info->rootWindow(),
  67                 openbox->cursors().session);
  68
  69   // XXX: initialize the screen's style
  70   /*
  71   otk::ustring stylepath;
  72   python_get_string("THEME", &stylepath);
  73   otk::Configuration sconfig(false);
  74   sconfig.setFile(otk::expandTilde(stylepath.c_str()));
  75   if (!sconfig.load()) {
  76     sconfig.setFile(otk::expandTilde(DEFAULTSTYLE));
  77     if (!sconfig.load()) {
  78       printf(_("Unable to load default style: %s. Aborting.\n"), DEFAULTSTYLE);
  79       ::exit(1);
  80     }
  81   }
  82   _style.load(sconfig);
  83   */
  84   otk::display->renderControl(_number)->
  85     drawRoot(*otk::RenderStyle::style(_number)->rootColor());
  86
  87   // set up notification of netwm support
  88   changeSupportedAtoms();
  89
  90   // Set the netwm properties for geometry
  91   unsigned long geometry[] = { _info->size().width(),
  92                                _info->size().height() };
  93   otk::Property::set(_info->rootWindow(),
  94                      otk::Property::atoms.net_desktop_geometry,
  95                      otk::Property::atoms.cardinal, geometry, 2);
  96
  97   // Set the net_desktop_names property
  98   std::vector<otk::ustring> names;
  99   python_get_stringlist("DESKTOP_NAMES", &names);
 100   otk::Property::set(_info->rootWindow(),
 101                      otk::Property::atoms.net_desktop_names,
 102                      otk::Property::utf8, names);
 103   // the above set() will cause the updateDesktopNames to fire right away so
 104   // we have a list of desktop names
 105
 106   _desktop = 0;
 107
 108   if (!python_get_long("NUMBER_OF_DESKTOPS", (long*)&_num_desktops))
 109     _num_desktops = 1;
 110   changeNumDesktops(_num_desktops); // set the hint
 111
 112   changeDesktop(0); // set the hint
 113
 114   // create the window which gets focus when no clients get it
 115   XSetWindowAttributes attr;
 116   attr.override_redirect = true;
 117   _focuswindow = XCreateWindow(**otk::display, _info->rootWindow(),
 118                                -100, -100, 1, 1, 0, 0, InputOnly,
 119                                _info->visual(), CWOverrideRedirect, &attr);
 120   XMapRaised(**otk::display, _focuswindow);
 121
 122   // these may be further updated if any pre-existing windows are found in
 123   // the manageExising() function
 124   changeClientList();  // initialize the client lists, which will be empty
 125
 126   updateDesktopLayout();
 127
 128   // register this class as the event handler for the root window
 129   openbox->registerHandler(_info->rootWindow(), this);
 130
 131   // call the python Startup callbacks
 132   EventData data(_number, 0, EventAction::Startup, 0);
 133   openbox->bindings()->fireEvent(&data);
 134 }
 135
 136
 137 Screen::~Screen()
 138 {
 139   if (! _managed) return;
 140
 141   XSelectInput(**otk::display, _info->rootWindow(), NoEventMask);
 142
 143   // unmanage all windows
 144   while (!clients.empty())
 145     unmanageWindow(clients.front());
 146
 147   // call the python Shutdown callbacks
 148   EventData data(_number, 0, EventAction::Shutdown, 0);
 149   openbox->bindings()->fireEvent(&data);
 150
 151   XDestroyWindow(**otk::display, _focuswindow);
 152   XDestroyWindow(**otk::display, _supportwindow);
 153 }
 154
 155
 156 void Screen::manageExisting()
 157 {
 158   unsigned int i, j, nchild;
 159   Window r, p, *children;
 160   XQueryTree(**otk::display, _info->rootWindow(), &r, &p,
 161              &children, &nchild);
 162
 163   // preen the window list of all icon windows... for better dockapp support
 164   for (i = 0; i < nchild; i++) {
 165     if (children[i] == None) continue;
 166
 167     XWMHints *wmhints = XGetWMHints(**otk::display,
 168                                     children[i]);
 169
 170     if (wmhints) {
 171       if ((wmhints->flags & IconWindowHint) &&
 172           (wmhints->icon_window != children[i])) {
 173         for (j = 0; j < nchild; j++) {
 174           if (children[j] == wmhints->icon_window) {
 175             children[j] = None;
 176             break;
 177           }
 178         }
 179       }
 180
 181       XFree(wmhints);
 182     }
 183   }
 184
 185   // manage shown windows
 186   for (i = 0; i < nchild; ++i) {
 187     if (children[i] == None)
 188       continue;
 189
 190     XWindowAttributes attrib;
 191     if (XGetWindowAttributes(**otk::display, children[i], &attrib)) {
 192       if (attrib.override_redirect) continue;
 193
 194       if (attrib.map_state != IsUnmapped) {
 195         manageWindow(children[i]);
 196       }
 197     }
 198   }
 199
 200   XFree(children);
 201 }
 202
 203 void Screen::updateDesktopLayout()
 204 {
 205   //const unsigned long _NET_WM_ORIENTATION_HORZ = 0;
 206   const unsigned long _NET_WM_ORIENTATION_VERT = 1;
 207   //const unsigned long _NET_WM_TOPLEFT = 0;
 208   const unsigned long _NET_WM_TOPRIGHT = 1;
 209   const unsigned long _NET_WM_BOTTOMRIGHT = 2;
 210   const unsigned long _NET_WM_BOTTOMLEFT = 3;
 211
 212   // defaults
 213   _layout.orientation = DesktopLayout::Horizontal;
 214   _layout.start_corner = DesktopLayout::TopLeft;
 215   _layout.rows = 1;
 216   _layout.columns = _num_desktops;
 217
 218   unsigned long *data, num = 4;
 219   if (otk::Property::get(_info->rootWindow(),
 220                          otk::Property::atoms.net_desktop_layout,
 221                          otk::Property::atoms.cardinal,
 222                          &num, &data)) {
 223     if (num >= 4) {
 224       if (data[0] == _NET_WM_ORIENTATION_VERT)
 225         _layout.orientation = DesktopLayout::Vertical;
 226       if (data[3] == _NET_WM_TOPRIGHT)
 227         _layout.start_corner = DesktopLayout::TopRight;
 228       else if (data[3] == _NET_WM_BOTTOMRIGHT)
 229         _layout.start_corner = DesktopLayout::BottomRight;
 230       else if (data[3] == _NET_WM_BOTTOMLEFT)
 231         _layout.start_corner = DesktopLayout::BottomLeft;
 232
 233       // fill in a zero rows/columns
 234       if (!(data[1] == 0 && data[2] == 0)) { // both 0's is bad data..
 235         if (data[1] == 0) {
 236           data[1] = (_num_desktops + _num_desktops % data[2]) / data[2];
 237         } else if (data[2] == 0) {
 238           data[2] = (_num_desktops + _num_desktops % data[1]) / data[1];
 239         }
 240         _layout.columns = data[1];
 241         _layout.rows = data[2];
 242       }
 243
 244       // bounds checking
 245       if (_layout.orientation == DesktopLayout::Horizontal) {
 246         if (_layout.rows > _num_desktops) _layout.rows = _num_desktops;
 247         if (_layout.columns > (_num_desktops + _num_desktops % _layout.rows) /
 248             _layout.rows)
 249           _layout.columns = (_num_desktops + _num_desktops % _layout.rows) /
 250             _layout.rows;
 251       } else {
 252         if (_layout.columns > _num_desktops) _layout.columns = _num_desktops;
 253         if (_layout.rows > (_num_desktops + _num_desktops % _layout.columns) /
 254             _layout.columns)
 255           _layout.rows = (_num_desktops + _num_desktops % _layout.columns) /
 256             _layout.columns;
 257       }
 258     }
 259     delete [] data;
 260   }
 261 }
 262
 263 void Screen::updateStruts()
 264 {
 265   struct ApplyStrut {
 266     void operator()(otk::Strut &self, const otk::Strut &other) {
 267       self.left = std::max(self.left, other.left);
 268       self.right = std::max(self.right, other.right);
 269       self.top = std::max(self.top, other.top);
 270       self.bottom = std::max(self.bottom, other.bottom);
 271     }
 272   } apply;
 273
 274   StrutList::iterator sit, send = _struts.end();
 275   // reset them all
 276   for (sit = _struts.begin(); sit != send; ++sit)
 277     sit->left = sit->right = sit->top = sit->bottom = 0;
 278
 279   ClientList::const_iterator it, end = clients.end();
 280   for (it = clients.begin(); it != end; ++it) {
 281     if ((*it)->iconic()) continue; // these dont count in the strut
 282
 283     unsigned int desk = (*it)->desktop();
 284     const otk::Strut &s = (*it)->strut();
 285
 286     if (desk == 0xffffffff)
 287       for (unsigned int i = 0, e = _struts.size(); i < e; ++i)
 288         apply(_struts[i], s);
 289     else if (desk < _struts.size())
 290       apply(_struts[desk], s);
 291     else
 292       assert(false); // invalid desktop otherwise..
 293     // apply to the 'all desktops' strut
 294     apply(_struts.back(), s);
 295   }
 296   changeWorkArea();
 297 }
 298
 299
 300 void Screen::changeWorkArea()
 301 {
 302   unsigned long *dims = new unsigned long[4 * _num_desktops];
 303   for (unsigned int i = 0; i < _num_desktops + 1; ++i) {
 304     otk::Rect old_area = _area[i];
 305 /*
 306 #ifdef    XINERAMA
 307   // reset to the full areas
 308   if (isXineramaActive())
 309     xineramaUsableArea = getXineramaAreas();
 310 #endif // XINERAMA
 311 */
 312
 313     _area[i] = otk::Rect(_struts[i].left, _struts[i].top,
 314                          _info->size().width() - (_struts[i].left +
 315                                                   _struts[i].right),
 316                          _info->size().height() - (_struts[i].top +
 317                                                    _struts[i].bottom));
 318
 319 /*
 320 #ifdef    XINERAMA
 321   if (isXineramaActive()) {
 322     // keep each of the ximerama-defined areas inside the strut
 323     RectList::iterator xit, xend = xineramaUsableArea.end();
 324     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 325       if (xit->x() < usableArea.x()) {
 326         xit->setX(usableArea.x());
 327         xit->setWidth(xit->width() - usableArea.x());
 328       }
 329       if (xit->y() < usableArea.y()) {
 330         xit->setY(usableArea.y());
 331         xit->setHeight(xit->height() - usableArea.y());
 332       }
 333       if (xit->x() + xit->width() > usableArea.width())
 334         xit->setWidth(usableArea.width() - xit->x());
 335       if (xit->y() + xit->height() > usableArea.height())
 336         xit->setHeight(usableArea.height() - xit->y());
 337     }
 338   }
 339 #endif // XINERAMA
 340 */
 341     if (old_area != _area[i]) {
 342       // the area has changed, adjust all the maximized windows
 343       ClientList::iterator it, end = clients.end();
 344       for (it = clients.begin(); it != end; ++it)
 345         if (i < _num_desktops) {
 346           if ((*it)->desktop() == i)
 347             (*it)->remaximize();
 348         } else {
 349           // the 'all desktops' size
 350           if ((*it)->desktop() == 0xffffffff)
 351             (*it)->remaximize();
 352         }
 353     }
 354
 355     // don't set these for the 'all desktops' area
 356     if (i < _num_desktops) {
 357       dims[(i * 4) + 0] = _area[i].x();
 358       dims[(i * 4) + 1] = _area[i].y();
 359       dims[(i * 4) + 2] = _area[i].width();
 360       dims[(i * 4) + 3] = _area[i].height();
 361     }
 362   }
 363   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_workarea,
 364                      otk::Property::atoms.cardinal, dims, 4 * _num_desktops);
 365   delete [] dims;
 366 }
 367
 368
 369 void Screen::changeSupportedAtoms()
 370 {
 371   // create the netwm support window
 372   _supportwindow = XCreateSimpleWindow(**otk::display,
 373                                        _info->rootWindow(),
 374                                        0, 0, 1, 1, 0, 0, 0);
 375
 376   // set supporting window
 377   otk::Property::set(_info->rootWindow(),
 378                      otk::Property::atoms.net_supporting_wm_check,
 379                      otk::Property::atoms.window, _supportwindow);
 380
 381   //set properties on the supporting window
 382   otk::Property::set(_supportwindow, otk::Property::atoms.net_wm_name,
 383                      otk::Property::utf8, "Openbox");
 384   otk::Property::set(_supportwindow,
 385                      otk::Property::atoms.net_supporting_wm_check,
 386                      otk::Property::atoms.window, _supportwindow);
 387
 388
 389   Atom supported[] = {
 390     otk::Property::atoms.net_current_desktop,
 391     otk::Property::atoms.net_number_of_desktops,
 392     otk::Property::atoms.net_desktop_geometry,
 393     otk::Property::atoms.net_desktop_viewport,
 394     otk::Property::atoms.net_active_window,
 395     otk::Property::atoms.net_workarea,
 396     otk::Property::atoms.net_client_list,
 397     otk::Property::atoms.net_client_list_stacking,
 398     otk::Property::atoms.net_desktop_names,
 399     otk::Property::atoms.net_close_window,
 400     otk::Property::atoms.net_wm_name,
 401     otk::Property::atoms.net_wm_visible_name,
 402     otk::Property::atoms.net_wm_icon_name,
 403     otk::Property::atoms.net_wm_visible_icon_name,
 404 /*
 405     otk::Property::atoms.net_wm_desktop,
 406 */
 407     otk::Property::atoms.net_wm_strut,
 408     otk::Property::atoms.net_wm_window_type,
 409     otk::Property::atoms.net_wm_window_type_desktop,
 410     otk::Property::atoms.net_wm_window_type_dock,
 411     otk::Property::atoms.net_wm_window_type_toolbar,
 412     otk::Property::atoms.net_wm_window_type_menu,
 413     otk::Property::atoms.net_wm_window_type_utility,
 414     otk::Property::atoms.net_wm_window_type_splash,
 415     otk::Property::atoms.net_wm_window_type_dialog,
 416     otk::Property::atoms.net_wm_window_type_normal,
 417 /*
 418     otk::Property::atoms.net_wm_moveresize,
 419     otk::Property::atoms.net_wm_moveresize_size_topleft,
 420     otk::Property::atoms.net_wm_moveresize_size_topright,
 421     otk::Property::atoms.net_wm_moveresize_size_bottomleft,
 422     otk::Property::atoms.net_wm_moveresize_size_bottomright,
 423     otk::Property::atoms.net_wm_moveresize_move,
 424 */
 425     otk::Property::atoms.net_wm_allowed_actions,
 426     otk::Property::atoms.net_wm_action_move,
 427     otk::Property::atoms.net_wm_action_resize,
 428     otk::Property::atoms.net_wm_action_minimize,
 429     otk::Property::atoms.net_wm_action_shade,
 430 /*    otk::Property::atoms.net_wm_action_stick,*/
 431     otk::Property::atoms.net_wm_action_maximize_horz,
 432     otk::Property::atoms.net_wm_action_maximize_vert,
 433     otk::Property::atoms.net_wm_action_fullscreen,
 434     otk::Property::atoms.net_wm_action_change_desktop,
 435     otk::Property::atoms.net_wm_action_close,
 436
 437     otk::Property::atoms.net_wm_state,
 438     otk::Property::atoms.net_wm_state_modal,
 439     otk::Property::atoms.net_wm_state_maximized_vert,
 440     otk::Property::atoms.net_wm_state_maximized_horz,
 441     otk::Property::atoms.net_wm_state_shaded,
 442     otk::Property::atoms.net_wm_state_skip_taskbar,
 443     otk::Property::atoms.net_wm_state_skip_pager,
 444     otk::Property::atoms.net_wm_state_hidden,
 445     otk::Property::atoms.net_wm_state_fullscreen,
 446     otk::Property::atoms.net_wm_state_above,
 447     otk::Property::atoms.net_wm_state_below,
 448   };
 449   const int num_supported = sizeof(supported)/sizeof(Atom);
 450
 451   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_supported,
 452                      otk::Property::atoms.atom, supported, num_supported);
 453 }
 454
 455
 456 void Screen::changeClientList()
 457 {
 458   Window *windows;
 459   unsigned int size = clients.size();
 460
 461   // create an array of the window ids
 462   if (size > 0) {
 463     Window *win_it;
 464
 465     windows = new Window[size];
 466     win_it = windows;
 467     ClientList::const_iterator it = clients.begin();
 468     const ClientList::const_iterator end = clients.end();
 469     for (; it != end; ++it, ++win_it)
 470       *win_it = (*it)->window();
 471   } else
 472     windows = (Window*) 0;
 473
 474   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_client_list,
 475                      otk::Property::atoms.window, windows, size);
 476
 477   if (size)
 478     delete [] windows;
 479
 480   changeStackingList();
 481 }
 482
 483
 484 void Screen::changeStackingList()
 485 {
 486   Window *windows;
 487   unsigned int size = _stacking.size();
 488
 489   assert(size == clients.size()); // just making sure.. :)
 490
 491
 492   // create an array of the window ids (from bottom to top, reverse order!)
 493   if (size > 0) {
 494     Window *win_it;
 495
 496     windows = new Window[size];
 497     win_it = windows;
 498     ClientList::const_reverse_iterator it = _stacking.rbegin();
 499     const ClientList::const_reverse_iterator end = _stacking.rend();
 500     for (; it != end; ++it, ++win_it)
 501       *win_it = (*it)->window();
 502   } else
 503     windows = (Window*) 0;
 504
 505   otk::Property::set(_info->rootWindow(),
 506                      otk::Property::atoms.net_client_list_stacking,
 507                      otk::Property::atoms.window, windows, size);
 508
 509   if (size)
 510     delete [] windows;
 511 }
 512
 513
 514 void Screen::manageWindow(Window window)
 515 {
 516   Client *client = 0;
 517   XWMHints *wmhint;
 518   XSetWindowAttributes attrib_set;
 519   XEvent e;
 520   XWindowAttributes attrib;
 521
 522   otk::display->grab();
 523
 524   // check if it has already been unmapped by the time we started mapping
 525   // the grab does a sync so we don't have to here
 526   if (XCheckTypedWindowEvent(**otk::display, window, DestroyNotify, &e) ||
 527       XCheckTypedWindowEvent(**otk::display, window, UnmapNotify, &e)) {
 528     XPutBackEvent(**otk::display, &e);
 529
 530     otk::display->ungrab();
 531     return; // don't manage it
 532   }
 533
 534   if (!XGetWindowAttributes(**otk::display, window, &attrib) ||
 535       attrib.override_redirect) {
 536     otk::display->ungrab();
 537     return; // don't manage it
 538   }
 539
 540   // is the window a docking app
 541   if ((wmhint = XGetWMHints(**otk::display, window))) {
 542     if ((wmhint->flags & StateHint) &&
 543         wmhint->initial_state == WithdrawnState) {
 544       //slit->addClient(w); // XXX: make dock apps work!
 545
 546       otk::display->ungrab();
 547       XFree(wmhint);
 548       return;
 549     }
 550     XFree(wmhint);
 551   }
 552
 553   // choose the events we want to receive on the CLIENT window
 554   attrib_set.event_mask = Client::event_mask;
 555   attrib_set.do_not_propagate_mask = Client::no_propagate_mask;
 556   XChangeWindowAttributes(**otk::display, window,
 557                           CWEventMask|CWDontPropagate, &attrib_set);
 558
 559   // create the Client class, which gets all of the hints on the window
 560   client = new Client(_number, window);
 561   // register for events
 562   openbox->registerHandler(window, client);
 563   // add to the wm's map
 564   openbox->addClient(window, client);
 565
 566   // we dont want a border on the client
 567   client->toggleClientBorder(false);
 568
 569   // specify that if we exit, the window should not be destroyed and should be
 570   // reparented back to root automatically
 571   XChangeSaveSet(**otk::display, window, SetModeInsert);
 572
 573   // create the decoration frame for the client window
 574   client->frame = new Frame(client);
 575   // register the plate for events (map req's)
 576   // this involves removing itself from the handler list first, since it is
 577   // auto added to the list, being a widget. we won't get any events on the
 578   // plate except for events for the client (SubstructureRedirectMask)
 579   openbox->clearHandler(client->frame->plate());
 580   openbox->registerHandler(client->frame->plate(), client);
 581
 582   // add to the wm's map
 583   Window *w = client->frame->allWindows();
 584   for (unsigned int i = 0; w[i]; ++i)
 585     openbox->addClient(w[i], client);
 586   delete [] w;
 587
 588   // reparent the client to the frame
 589   client->frame->grabClient();
 590
 591   if (openbox->state() != Openbox::State_Starting) {
 592     // position the window intelligenty .. hopefully :)
 593     // call the python PLACEWINDOW binding
 594     EventData data(_number, client, EventAction::PlaceWindow, 0);
 595     openbox->bindings()->fireEvent(&data);
 596   }
 597
 598   EventData ddata(_number, client, EventAction::DisplayingWindow, 0);
 599   openbox->bindings()->fireEvent(&ddata);
 600
 601   client->showhide();
 602
 603   client->applyStartupState();
 604
 605   otk::display->ungrab();
 606
 607   // add to the screen's list
 608   clients.push_back(client);
 609   // once the client is in the list, update our strut to include the new
 610   // client's (it is good that this happens after window placement!)
 611   updateStruts();
 612   // this puts into the stacking order, then raises it
 613   _stacking.push_back(client);
 614   raiseWindow(client);
 615   // update the root properties
 616   changeClientList();
 617
 618   openbox->bindings()->grabButtons(true, client);
 619
 620   EventData ndata(_number, client, EventAction::NewWindow, 0);
 621   openbox->bindings()->fireEvent(&ndata);
 622
 623 #ifdef DEBUG
 624   printf("Managed window 0x%lx frame 0x%lx\n",
 625          window, client->frame->window());
 626 #endif
 627 }
 628
 629
 630 void Screen::unmanageWindow(Client *client)
 631 {
 632   Frame *frame = client->frame;
 633
 634   // call the python CLOSEWINDOW binding
 635   EventData data(_number, client, EventAction::CloseWindow, 0);
 636   openbox->bindings()->fireEvent(&data);
 637
 638   openbox->bindings()->grabButtons(false, client);
 639
 640   // remove from the wm's map
 641   openbox->removeClient(client->window());
 642   Window *w = frame->allWindows();
 643   for (unsigned int i = 0; w[i]; ++i)
 644     openbox->addClient(w[i], client);
 645   delete [] w;
 646   // unregister for handling events
 647   openbox->clearHandler(client->window());
 648
 649   // remove the window from our save set
 650   XChangeSaveSet(**otk::display, client->window(), SetModeDelete);
 651
 652   // we dont want events no more
 653   XSelectInput(**otk::display, client->window(), NoEventMask);
 654
 655   frame->hide();
 656
 657   // give the client its border back
 658   client->toggleClientBorder(true);
 659
 660   // reparent the window out of the frame
 661   frame->releaseClient();
 662
 663 #ifdef DEBUG
 664   Window framewin = client->frame->window();
 665 #endif
 666   delete client->frame;
 667   client->frame = 0;
 668
 669   // remove from the stacking order
 670   _stacking.remove(client);
 671
 672   // remove from the screen's list
 673   clients.remove(client);
 674
 675   // once the client is out of the list, update our strut to remove it's
 676   // influence
 677   updateStruts();
 678
 679   // unset modal before dropping our focus
 680   client->_modal = false;
 681
 682   // unfocus the client (calls the focus callbacks)
 683   client->unfocus();
 684
 685 #ifdef DEBUG
 686   printf("Unmanaged window 0x%lx frame 0x%lx\n", client->window(), framewin);
 687 #endif
 688
 689   delete client;
 690
 691   // update the root properties
 692   changeClientList();
 693 }
 694
 695 void Screen::lowerWindow(Client *client)
 696 {
 697   Window wins[2];  // only ever restack 2 windows.
 698
 699   assert(!_stacking.empty()); // this would be bad
 700
 701   ClientList::iterator it = --_stacking.end();
 702   const ClientList::iterator end = _stacking.begin();
 703
 704   if (client->modal() && client->transientFor()) {
 705     // don't let a modal window lower below its transient_for
 706     it = std::find(_stacking.begin(), _stacking.end(), client->transientFor());
 707     assert(it != _stacking.end());
 708
 709     wins[0] = (it == _stacking.begin() ? _focuswindow :
 710                ((*(--ClientList::const_iterator(it)))->frame->window()));
 711     wins[1] = client->frame->window();
 712     if (wins[0] == wins[1]) return; // already right above the window
 713
 714     _stacking.remove(client);
 715     _stacking.insert(it, client);
 716   } else {
 717     for (; it != end && (*it)->layer() < client->layer(); --it);
 718     if (*it == client) return;          // already the bottom, return
 719
 720     wins[0] = (*it)->frame->window();
 721     wins[1] = client->frame->window();
 722
 723     _stacking.remove(client);
 724     _stacking.insert(++it, client);
 725   }
 726
 727   XRestackWindows(**otk::display, wins, 2);
 728   changeStackingList();
 729 }
 730
 731 void Screen::raiseWindow(Client *client)
 732 {
 733   Window wins[2];  // only ever restack 2 windows.
 734
 735   assert(!_stacking.empty()); // this would be bad
 736
 737   Client *m = client->findModalChild();
 738   // if we have a modal child, raise it instead, we'll go along tho later
 739   if (m) raiseWindow(m);
 740
 741   // remove the client before looking so we can't run into ourselves
 742   _stacking.remove(client);
 743
 744   ClientList::iterator it = _stacking.begin();
 745   const ClientList::iterator end = _stacking.end();
 746
 747   // the stacking list is from highest to lowest
 748 //  for (;it != end, ++it) {
 749 //    if ((*it)->layer() <= client->layer() && m != *it) break;
 750 //  }
 751   for (; it != end && ((*it)->layer() > client->layer() || m == *it); ++it);
 752
 753   /*
 754     if our new position is the top, we want to stack under the _focuswindow
 755     otherwise, we want to stack under the previous window in the stack.
 756   */
 757   wins[0] = (it == _stacking.begin() ? _focuswindow :
 758              ((*(--ClientList::const_iterator(it)))->frame->window()));
 759   wins[1] = client->frame->window();
 760
 761   _stacking.insert(it, client);
 762
 763   XRestackWindows(**otk::display, wins, 2);
 764
 765   changeStackingList();
 766 }
 767
 768 void Screen::changeDesktop(unsigned int desktop)
 769 {
 770   if (desktop >= _num_desktops) return;
 771
 772   printf("Moving to desktop %u\n", desktop);
 773
 774   unsigned int old = _desktop;
 775
 776   _desktop = desktop;
 777   otk::Property::set(_info->rootWindow(),
 778                      otk::Property::atoms.net_current_desktop,
 779                      otk::Property::atoms.cardinal, _desktop);
 780
 781   if (old == _desktop) return;
 782
 783   ClientList::iterator it, end = clients.end();
 784   for (it = clients.begin(); it != end; ++it)
 785     (*it)->showhide();
 786
 787   // force the callbacks to fire
 788   if (!openbox->focusedClient())
 789     openbox->setFocusedClient(0);
 790 }
 791
 792 void Screen::changeNumDesktops(unsigned int num)
 793 {
 794   assert(num > 0);
 795
 796   if (!(num > 0)) return;
 797
 798   // move windows on desktops that will no longer exist!
 799   ClientList::iterator it, end = clients.end();
 800   for (it = clients.begin(); it != end; ++it) {
 801     unsigned int d = (*it)->desktop();
 802     if (d >= num && d != 0xffffffff) {
 803       XEvent ce;
 804       ce.xclient.type = ClientMessage;
 805       ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 806       ce.xclient.display = **otk::display;
 807       ce.xclient.window = (*it)->window();
 808       ce.xclient.format = 32;
 809       ce.xclient.data.l[0] = num - 1;
 810       XSendEvent(**otk::display, _info->rootWindow(), False,
 811                  SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 812     }
 813   }
 814
 815   _num_desktops = num;
 816   otk::Property::set(_info->rootWindow(),
 817                      otk::Property::atoms.net_number_of_desktops,
 818                      otk::Property::atoms.cardinal, _num_desktops);
 819
 820   // set the viewport hint
 821   unsigned long *viewport = new unsigned long[_num_desktops * 2];
 822   memset(viewport, 0, sizeof(unsigned long) * _num_desktops * 2);
 823   otk::Property::set(_info->rootWindow(),
 824                      otk::Property::atoms.net_desktop_viewport,
 825                      otk::Property::atoms.cardinal,
 826                      viewport, _num_desktops * 2);
 827   delete [] viewport;
 828
 829   // change our struts/area to match
 830   _area.resize(_num_desktops + 1);
 831   _struts.resize(_num_desktops + 1);
 832   updateStruts();
 833
 834   // the number of rows/columns will differ
 835   updateDesktopLayout();
 836
 837   // change our desktop if we're on one that no longer exists!
 838   if (_desktop >= _num_desktops)
 839     changeDesktop(_num_desktops - 1);
 840 }
 841
 842
 843 void Screen::updateDesktopNames()
 844 {
 845   unsigned long num = (unsigned) -1;
 846
 847   if (!otk::Property::get(_info->rootWindow(),
 848                           otk::Property::atoms.net_desktop_names,
 849                           otk::Property::utf8, &num, &_desktop_names))
 850     _desktop_names.clear();
 851   while (_desktop_names.size() < _num_desktops)
 852     _desktop_names.push_back("Unnamed");
 853 }
 854
 855
 856 void Screen::setDesktopName(unsigned int i, const otk::ustring &name)
 857 {
 858   if (i >= _num_desktops) return;
 859
 860   otk::Property::StringVect newnames = _desktop_names;
 861   newnames[i] = name;
 862   otk::Property::set(_info->rootWindow(),
 863                      otk::Property::atoms.net_desktop_names,
 864                      otk::Property::utf8, newnames);
 865 }
 866
 867
 868 const otk::Rect& Screen::area(unsigned int desktop) const {
 869   assert(desktop < _num_desktops || desktop == 0xffffffff);
 870   if (desktop < _num_desktops)
 871     return _area[desktop];
 872   else
 873     return _area[_num_desktops];
 874 }
 875
 876 void Screen::installColormap(bool install) const
 877 {
 878   if (install)
 879     XInstallColormap(**otk::display, _info->colormap());
 880   else
 881     XUninstallColormap(**otk::display, _info->colormap());
 882 }
 883
 884
 885 void Screen::propertyHandler(const XPropertyEvent &e)
 886 {
 887   otk::EventHandler::propertyHandler(e);
 888
 889   // compress changes to a single property into a single change
 890   XEvent ce;
 891   while (XCheckTypedWindowEvent(**otk::display, _info->rootWindow(),
 892                                 e.type, &ce)) {
 893     // XXX: it would be nice to compress ALL changes to a property, not just
 894     //      changes in a row without other props between.
 895     if (ce.xproperty.atom != e.atom) {
 896       XPutBackEvent(**otk::display, &ce);
 897       break;
 898     }
 899   }
 900
 901   if (e.atom == otk::Property::atoms.net_desktop_names)
 902     updateDesktopNames();
 903   else if (e.atom == otk::Property::atoms.net_desktop_layout)
 904     updateDesktopLayout();
 905 }
 906
 907
 908 void Screen::clientMessageHandler(const XClientMessageEvent &e)
 909 {
 910   otk::EventHandler::clientMessageHandler(e);
 911
 912   if (e.format != 32) return;
 913
 914   if (e.message_type == otk::Property::atoms.net_current_desktop) {
 915     changeDesktop(e.data.l[0]);
 916   } else if (e.message_type == otk::Property::atoms.net_number_of_desktops) {
 917     changeNumDesktops(e.data.l[0]);
 918   }
 919 }
 920
 921
 922 void Screen::mapRequestHandler(const XMapRequestEvent &e)
 923 {
 924   otk::EventHandler::mapRequestHandler(e);
 925
 926 #ifdef    DEBUG
 927   printf("MapRequest for 0x%lx\n", e.window);
 928 #endif // DEBUG
 929
 930   Client *c = openbox->findClient(e.window);
 931   if (c) {
 932 #ifdef DEBUG
 933     printf("DEBUG: MAP REQUEST CAUGHT IN SCREEN. IGNORED.\n");
 934 #endif
 935   } else
 936     manageWindow(e.window);
 937 }
 938
 939 }