src/screen.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #include "config.h"
   4
   5 #include "screen.hh"
   6 #include "client.hh"
   7 #include "openbox.hh"
   8 #include "frame.hh"
   9 #include "bindings.hh"
  10 #include "python.hh"
  11 #include "otk/display.hh"
  12 #include "otk/property.hh"
  13 #include "otk/util.hh"
  14
  15 extern "C" {
  16 #ifdef    HAVE_UNISTD_H
  17 #  include <sys/types.h>
  18 #  include <unistd.h>
  19 #endif // HAVE_UNISTD_H
  20
  21 #include "gettext.h"
  22 #define _(str) gettext(str)
  23 }
  24
  25 #include <vector>
  26 #include <algorithm>
  27 #include <cstdio>
  28 #include <cstring>
  29
  30 static bool running;
  31 static int anotherWMRunning(Display *display, XErrorEvent *) {
  32   printf(_("Another window manager already running on display %s.\n"),
  33          DisplayString(display));
  34   running = true;
  35   return -1;
  36 }
  37
  38
  39 namespace ob {
  40
  41
  42 Screen::Screen(int screen)
  43   : _number(screen)
  44 {
  45   assert(screen >= 0); assert(screen < ScreenCount(**otk::display));
  46   _info = otk::display->screenInfo(screen);
  47
  48   ::running = false;
  49   XErrorHandler old = XSetErrorHandler(::anotherWMRunning);
  50   XSelectInput(**otk::display, _info->rootWindow(),
  51                Screen::event_mask);
  52   XSync(**otk::display, false);
  53   XSetErrorHandler(old);
  54
  55   _managed = !::running;
  56   if (! _managed) return; // was unable to manage the screen
  57
  58 #ifdef DEBUG
  59   printf(_("Managing screen %d: visual 0x%lx, depth %d\n"),
  60          _number, XVisualIDFromVisual(_info->visual()), _info->depth());
  61 #endif
  62
  63   otk::Property::set(_info->rootWindow(), otk::Property::atoms.openbox_pid,
  64                      otk::Property::atoms.cardinal, (unsigned long) getpid());
  65
  66   // set the mouse cursor for the root window (the default cursor)
  67   XDefineCursor(**otk::display, _info->rootWindow(),
  68                 openbox->cursors().session);
  69
  70   // initialize the screen's style
  71   otk::RenderStyle::setStyle(_number, _config.theme);
  72   // draw the root window
  73   otk::bexec("obsetroot " + otk::RenderStyle::style(_number)->rootArgs(),
  74              _info->displayString());
  75
  76   // set up notification of netwm support
  77   changeSupportedAtoms();
  78
  79   // Set the netwm properties for geometry
  80   unsigned long geometry[] = { _info->size().width(),
  81                                _info->size().height() };
  82   otk::Property::set(_info->rootWindow(),
  83                      otk::Property::atoms.net_desktop_geometry,
  84                      otk::Property::atoms.cardinal, geometry, 2);
  85
  86   // Set the net_desktop_names property
  87   otk::Property::set(_info->rootWindow(),
  88                      otk::Property::atoms.net_desktop_names,
  89                      otk::Property::utf8, _config.desktop_names);
  90   // the above set() will cause the updateDesktopNames to fire right away so
  91   // we have a list of desktop names
  92
  93   _desktop = 0;
  94
  95   changeNumDesktops(_config.num_desktops); // set the hint
  96
  97   changeDesktop(0); // set the hint
  98
  99   // don't start in showing-desktop mode
 100   _showing_desktop = false;
 101   otk::Property::set(_info->rootWindow(),
 102                      otk::Property::atoms.net_showing_desktop,
 103                      otk::Property::atoms.cardinal, 0);
 104
 105   // create the window which gets focus when no clients get it
 106   XSetWindowAttributes attr;
 107   attr.override_redirect = true;
 108   _focuswindow = XCreateWindow(**otk::display, _info->rootWindow(),
 109                                -100, -100, 1, 1, 0, 0, InputOnly,
 110                                _info->visual(), CWOverrideRedirect, &attr);
 111   XMapRaised(**otk::display, _focuswindow);
 112
 113   // these may be further updated if any pre-existing windows are found in
 114   // the manageExising() function
 115   changeClientList();  // initialize the client lists, which will be empty
 116
 117   updateDesktopLayout();
 118
 119   // register this class as the event handler for the root window
 120   openbox->registerHandler(_info->rootWindow(), this);
 121
 122   // call the python Startup callbacks
 123   EventData data(_number, 0, EventAction::Startup, 0);
 124   openbox->bindings()->fireEvent(&data);
 125 }
 126
 127
 128 Screen::~Screen()
 129 {
 130   if (! _managed) return;
 131
 132   XSelectInput(**otk::display, _info->rootWindow(), NoEventMask);
 133
 134   // unmanage all windows
 135   while (!clients.empty())
 136     unmanageWindow(clients.front());
 137
 138   // call the python Shutdown callbacks
 139   EventData data(_number, 0, EventAction::Shutdown, 0);
 140   openbox->bindings()->fireEvent(&data);
 141
 142   XDestroyWindow(**otk::display, _focuswindow);
 143   XDestroyWindow(**otk::display, _supportwindow);
 144 }
 145
 146
 147 void Screen::manageExisting()
 148 {
 149   unsigned int i, j, nchild;
 150   Window r, p, *children;
 151   XQueryTree(**otk::display, _info->rootWindow(), &r, &p,
 152              &children, &nchild);
 153
 154   // preen the window list of all icon windows... for better dockapp support
 155   for (i = 0; i < nchild; i++) {
 156     if (children[i] == None) continue;
 157
 158     XWMHints *wmhints = XGetWMHints(**otk::display,
 159                                     children[i]);
 160
 161     if (wmhints) {
 162       if ((wmhints->flags & IconWindowHint) &&
 163           (wmhints->icon_window != children[i])) {
 164         for (j = 0; j < nchild; j++) {
 165           if (children[j] == wmhints->icon_window) {
 166             children[j] = None;
 167             break;
 168           }
 169         }
 170       }
 171
 172       XFree(wmhints);
 173     }
 174   }
 175
 176   // manage shown windows
 177   for (i = 0; i < nchild; ++i) {
 178     if (children[i] == None)
 179       continue;
 180
 181     XWindowAttributes attrib;
 182     if (XGetWindowAttributes(**otk::display, children[i], &attrib)) {
 183       if (attrib.override_redirect) continue;
 184
 185       if (attrib.map_state != IsUnmapped) {
 186         manageWindow(children[i]);
 187       }
 188     }
 189   }
 190
 191   XFree(children);
 192 }
 193
 194 void Screen::updateDesktopLayout()
 195 {
 196   //const unsigned long _NET_WM_ORIENTATION_HORZ = 0;
 197   const unsigned long _NET_WM_ORIENTATION_VERT = 1;
 198   //const unsigned long _NET_WM_TOPLEFT = 0;
 199   const unsigned long _NET_WM_TOPRIGHT = 1;
 200   const unsigned long _NET_WM_BOTTOMRIGHT = 2;
 201   const unsigned long _NET_WM_BOTTOMLEFT = 3;
 202
 203   // defaults
 204   _layout.orientation = DesktopLayout::Horizontal;
 205   _layout.start_corner = DesktopLayout::TopLeft;
 206   _layout.rows = 1;
 207   _layout.columns = _num_desktops;
 208
 209   unsigned long *data, num = 4;
 210   if (otk::Property::get(_info->rootWindow(),
 211                          otk::Property::atoms.net_desktop_layout,
 212                          otk::Property::atoms.cardinal,
 213                          &num, &data)) {
 214     if (num >= 4) {
 215       if (data[0] == _NET_WM_ORIENTATION_VERT)
 216         _layout.orientation = DesktopLayout::Vertical;
 217       if (data[3] == _NET_WM_TOPRIGHT)
 218         _layout.start_corner = DesktopLayout::TopRight;
 219       else if (data[3] == _NET_WM_BOTTOMRIGHT)
 220         _layout.start_corner = DesktopLayout::BottomRight;
 221       else if (data[3] == _NET_WM_BOTTOMLEFT)
 222         _layout.start_corner = DesktopLayout::BottomLeft;
 223
 224       // fill in a zero rows/columns
 225       if (!(data[1] == 0 && data[2] == 0)) { // both 0's is bad data..
 226         if (data[1] == 0) {
 227           data[1] = (_num_desktops + _num_desktops % data[2]) / data[2];
 228         } else if (data[2] == 0) {
 229           data[2] = (_num_desktops + _num_desktops % data[1]) / data[1];
 230         }
 231         _layout.columns = data[1];
 232         _layout.rows = data[2];
 233       }
 234
 235       // bounds checking
 236       if (_layout.orientation == DesktopLayout::Horizontal) {
 237         if (_layout.rows > _num_desktops) _layout.rows = _num_desktops;
 238         if (_layout.columns > (_num_desktops + _num_desktops % _layout.rows) /
 239             _layout.rows)
 240           _layout.columns = (_num_desktops + _num_desktops % _layout.rows) /
 241             _layout.rows;
 242       } else {
 243         if (_layout.columns > _num_desktops) _layout.columns = _num_desktops;
 244         if (_layout.rows > (_num_desktops + _num_desktops % _layout.columns) /
 245             _layout.columns)
 246           _layout.rows = (_num_desktops + _num_desktops % _layout.columns) /
 247             _layout.columns;
 248       }
 249     }
 250     delete [] data;
 251   }
 252 }
 253
 254 void Screen::updateStruts()
 255 {
 256   struct ApplyStrut {
 257     void operator()(otk::Strut &self, const otk::Strut &other) {
 258       self.left = std::max(self.left, other.left);
 259       self.right = std::max(self.right, other.right);
 260       self.top = std::max(self.top, other.top);
 261       self.bottom = std::max(self.bottom, other.bottom);
 262     }
 263   } apply;
 264
 265   StrutList::iterator sit, send = _struts.end();
 266   // reset them all
 267   for (sit = _struts.begin(); sit != send; ++sit)
 268     sit->left = sit->right = sit->top = sit->bottom = 0;
 269
 270   ClientList::const_iterator it, end = clients.end();
 271   for (it = clients.begin(); it != end; ++it) {
 272     if ((*it)->iconic()) continue; // these dont count in the strut
 273
 274     unsigned int desk = (*it)->desktop();
 275     const otk::Strut &s = (*it)->strut();
 276
 277     if (desk == 0xffffffff)
 278       for (unsigned int i = 0, e = _struts.size(); i < e; ++i)
 279         apply(_struts[i], s);
 280     else if (desk < _struts.size())
 281       apply(_struts[desk], s);
 282     else
 283       assert(false); // invalid desktop otherwise..
 284     // apply to the 'all desktops' strut
 285     apply(_struts.back(), s);
 286   }
 287   changeWorkArea();
 288 }
 289
 290
 291 void Screen::changeWorkArea()
 292 {
 293   unsigned long *dims = new unsigned long[4 * _num_desktops];
 294   for (unsigned int i = 0; i < _num_desktops + 1; ++i) {
 295     otk::Rect old_area = _area[i];
 296 /*
 297 #ifdef    XINERAMA
 298   // reset to the full areas
 299   if (isXineramaActive())
 300     xineramaUsableArea = getXineramaAreas();
 301 #endif // XINERAMA
 302 */
 303
 304     _area[i] = otk::Rect(_struts[i].left, _struts[i].top,
 305                          _info->size().width() - (_struts[i].left +
 306                                                   _struts[i].right),
 307                          _info->size().height() - (_struts[i].top +
 308                                                    _struts[i].bottom));
 309
 310 /*
 311 #ifdef    XINERAMA
 312   if (isXineramaActive()) {
 313     // keep each of the ximerama-defined areas inside the strut
 314     RectList::iterator xit, xend = xineramaUsableArea.end();
 315     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 316       if (xit->x() < usableArea.x()) {
 317         xit->setX(usableArea.x());
 318         xit->setWidth(xit->width() - usableArea.x());
 319       }
 320       if (xit->y() < usableArea.y()) {
 321         xit->setY(usableArea.y());
 322         xit->setHeight(xit->height() - usableArea.y());
 323       }
 324       if (xit->x() + xit->width() > usableArea.width())
 325         xit->setWidth(usableArea.width() - xit->x());
 326       if (xit->y() + xit->height() > usableArea.height())
 327         xit->setHeight(usableArea.height() - xit->y());
 328     }
 329   }
 330 #endif // XINERAMA
 331 */
 332     if (old_area != _area[i]) {
 333       // the area has changed, adjust all the maximized windows
 334       ClientList::iterator it, end = clients.end();
 335       for (it = clients.begin(); it != end; ++it)
 336         if (i < _num_desktops) {
 337           if ((*it)->desktop() == i)
 338             (*it)->remaximize();
 339         } else {
 340           // the 'all desktops' size
 341           if ((*it)->desktop() == 0xffffffff)
 342             (*it)->remaximize();
 343         }
 344     }
 345
 346     // don't set these for the 'all desktops' area
 347     if (i < _num_desktops) {
 348       dims[(i * 4) + 0] = _area[i].x();
 349       dims[(i * 4) + 1] = _area[i].y();
 350       dims[(i * 4) + 2] = _area[i].width();
 351       dims[(i * 4) + 3] = _area[i].height();
 352     }
 353   }
 354   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_workarea,
 355                      otk::Property::atoms.cardinal, dims, 4 * _num_desktops);
 356   delete [] dims;
 357 }
 358
 359
 360 void Screen::changeSupportedAtoms()
 361 {
 362   // create the netwm support window
 363   _supportwindow = XCreateSimpleWindow(**otk::display,
 364                                        _info->rootWindow(),
 365                                        0, 0, 1, 1, 0, 0, 0);
 366
 367   // set supporting window
 368   otk::Property::set(_info->rootWindow(),
 369                      otk::Property::atoms.net_supporting_wm_check,
 370                      otk::Property::atoms.window, _supportwindow);
 371
 372   //set properties on the supporting window
 373   otk::Property::set(_supportwindow, otk::Property::atoms.net_wm_name,
 374                      otk::Property::utf8, "Openbox");
 375   otk::Property::set(_supportwindow,
 376                      otk::Property::atoms.net_supporting_wm_check,
 377                      otk::Property::atoms.window, _supportwindow);
 378
 379
 380   Atom supported[] = {
 381     otk::Property::atoms.net_current_desktop,
 382     otk::Property::atoms.net_number_of_desktops,
 383     otk::Property::atoms.net_desktop_geometry,
 384     otk::Property::atoms.net_desktop_viewport,
 385     otk::Property::atoms.net_active_window,
 386     otk::Property::atoms.net_workarea,
 387     otk::Property::atoms.net_client_list,
 388     otk::Property::atoms.net_client_list_stacking,
 389     otk::Property::atoms.net_desktop_names,
 390     otk::Property::atoms.net_close_window,
 391     otk::Property::atoms.net_desktop_layout,
 392     otk::Property::atoms.net_showing_desktop,
 393     otk::Property::atoms.net_wm_name,
 394     otk::Property::atoms.net_wm_visible_name,
 395     otk::Property::atoms.net_wm_icon_name,
 396     otk::Property::atoms.net_wm_visible_icon_name,
 397     otk::Property::atoms.net_wm_desktop,
 398     otk::Property::atoms.net_wm_strut,
 399     otk::Property::atoms.net_wm_window_type,
 400     otk::Property::atoms.net_wm_window_type_desktop,
 401     otk::Property::atoms.net_wm_window_type_dock,
 402     otk::Property::atoms.net_wm_window_type_toolbar,
 403     otk::Property::atoms.net_wm_window_type_menu,
 404     otk::Property::atoms.net_wm_window_type_utility,
 405     otk::Property::atoms.net_wm_window_type_splash,
 406     otk::Property::atoms.net_wm_window_type_dialog,
 407     otk::Property::atoms.net_wm_window_type_normal,
 408 /*
 409     otk::Property::atoms.net_wm_moveresize,
 410     otk::Property::atoms.net_wm_moveresize_size_topleft,
 411     otk::Property::atoms.net_wm_moveresize_size_topright,
 412     otk::Property::atoms.net_wm_moveresize_size_bottomleft,
 413     otk::Property::atoms.net_wm_moveresize_size_bottomright,
 414     otk::Property::atoms.net_wm_moveresize_move,
 415 */
 416     otk::Property::atoms.net_wm_allowed_actions,
 417     otk::Property::atoms.net_wm_action_move,
 418     otk::Property::atoms.net_wm_action_resize,
 419     otk::Property::atoms.net_wm_action_minimize,
 420     otk::Property::atoms.net_wm_action_shade,
 421 /*    otk::Property::atoms.net_wm_action_stick,*/
 422     otk::Property::atoms.net_wm_action_maximize_horz,
 423     otk::Property::atoms.net_wm_action_maximize_vert,
 424     otk::Property::atoms.net_wm_action_fullscreen,
 425     otk::Property::atoms.net_wm_action_change_desktop,
 426     otk::Property::atoms.net_wm_action_close,
 427
 428     otk::Property::atoms.net_wm_state,
 429     otk::Property::atoms.net_wm_state_modal,
 430     otk::Property::atoms.net_wm_state_maximized_vert,
 431     otk::Property::atoms.net_wm_state_maximized_horz,
 432     otk::Property::atoms.net_wm_state_shaded,
 433     otk::Property::atoms.net_wm_state_skip_taskbar,
 434     otk::Property::atoms.net_wm_state_skip_pager,
 435     otk::Property::atoms.net_wm_state_hidden,
 436     otk::Property::atoms.net_wm_state_fullscreen,
 437     otk::Property::atoms.net_wm_state_above,
 438     otk::Property::atoms.net_wm_state_below,
 439   };
 440   const int num_supported = sizeof(supported)/sizeof(Atom);
 441
 442   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_supported,
 443                      otk::Property::atoms.atom, supported, num_supported);
 444 }
 445
 446
 447 void Screen::changeClientList()
 448 {
 449   Window *windows;
 450   unsigned int size = clients.size();
 451
 452   // create an array of the window ids
 453   if (size > 0) {
 454     Window *win_it;
 455
 456     windows = new Window[size];
 457     win_it = windows;
 458     ClientList::const_iterator it = clients.begin();
 459     const ClientList::const_iterator end = clients.end();
 460     for (; it != end; ++it, ++win_it)
 461       *win_it = (*it)->window();
 462   } else
 463     windows = (Window*) 0;
 464
 465   otk::Property::set(_info->rootWindow(), otk::Property::atoms.net_client_list,
 466                      otk::Property::atoms.window, windows, size);
 467
 468   if (size)
 469     delete [] windows;
 470
 471   changeStackingList();
 472 }
 473
 474
 475 void Screen::changeStackingList()
 476 {
 477   Window *windows;
 478   unsigned int size = _stacking.size();
 479
 480   assert(size == clients.size()); // just making sure.. :)
 481
 482
 483   // create an array of the window ids (from bottom to top, reverse order!)
 484   if (size > 0) {
 485     Window *win_it;
 486
 487     windows = new Window[size];
 488     win_it = windows;
 489     ClientList::const_reverse_iterator it = _stacking.rbegin();
 490     const ClientList::const_reverse_iterator end = _stacking.rend();
 491     for (; it != end; ++it, ++win_it)
 492       *win_it = (*it)->window();
 493   } else
 494     windows = (Window*) 0;
 495
 496   otk::Property::set(_info->rootWindow(),
 497                      otk::Property::atoms.net_client_list_stacking,
 498                      otk::Property::atoms.window, windows, size);
 499
 500   if (size)
 501     delete [] windows;
 502 }
 503
 504
 505 void Screen::manageWindow(Window window)
 506 {
 507   Client *client = 0;
 508   XWMHints *wmhint;
 509   XSetWindowAttributes attrib_set;
 510   XEvent e;
 511   XWindowAttributes attrib;
 512
 513   otk::display->grab();
 514
 515   // check if it has already been unmapped by the time we started mapping
 516   // the grab does a sync so we don't have to here
 517   if (XCheckTypedWindowEvent(**otk::display, window, DestroyNotify, &e) ||
 518       XCheckTypedWindowEvent(**otk::display, window, UnmapNotify, &e)) {
 519     XPutBackEvent(**otk::display, &e);
 520
 521     otk::display->ungrab();
 522     return; // don't manage it
 523   }
 524
 525   if (!XGetWindowAttributes(**otk::display, window, &attrib) ||
 526       attrib.override_redirect) {
 527     otk::display->ungrab();
 528     return; // don't manage it
 529   }
 530
 531   // is the window a docking app
 532   if ((wmhint = XGetWMHints(**otk::display, window))) {
 533     if ((wmhint->flags & StateHint) &&
 534         wmhint->initial_state == WithdrawnState) {
 535       //slit->addClient(w); // XXX: make dock apps work!
 536
 537       otk::display->ungrab();
 538       XFree(wmhint);
 539       return;
 540     }
 541     XFree(wmhint);
 542   }
 543
 544   // choose the events we want to receive on the CLIENT window
 545   attrib_set.event_mask = Client::event_mask;
 546   attrib_set.do_not_propagate_mask = Client::no_propagate_mask;
 547   XChangeWindowAttributes(**otk::display, window,
 548                           CWEventMask|CWDontPropagate, &attrib_set);
 549
 550   // create the Client class, which gets all of the hints on the window
 551   client = new Client(_number, window);
 552   // register for events
 553   openbox->registerHandler(window, client);
 554   // add to the wm's map
 555   openbox->addClient(window, client);
 556
 557   // we dont want a border on the client
 558   client->toggleClientBorder(false);
 559
 560   // specify that if we exit, the window should not be destroyed and should be
 561   // reparented back to root automatically
 562   XChangeSaveSet(**otk::display, window, SetModeInsert);
 563
 564   // create the decoration frame for the client window
 565   client->frame = new Frame(client);
 566   // register the plate for events (map req's)
 567   // this involves removing itself from the handler list first, since it is
 568   // auto added to the list, being a widget. we won't get any events on the
 569   // plate except for events for the client (SubstructureRedirectMask)
 570   openbox->clearHandler(client->frame->plate());
 571   openbox->registerHandler(client->frame->plate(), client);
 572
 573   // add to the wm's map
 574   Window *w = client->frame->allWindows();
 575   for (unsigned int i = 0; w[i]; ++i)
 576     openbox->addClient(w[i], client);
 577   delete [] w;
 578
 579   // reparent the client to the frame
 580   client->frame->grabClient();
 581
 582   if (openbox->state() != Openbox::State_Starting) {
 583     // position the window intelligenty .. hopefully :)
 584     // call the python PLACEWINDOW binding
 585     EventData data(_number, client, EventAction::PlaceWindow, 0);
 586     openbox->bindings()->fireEvent(&data);
 587   }
 588
 589   EventData ddata(_number, client, EventAction::DisplayingWindow, 0);
 590   openbox->bindings()->fireEvent(&ddata);
 591
 592   client->showhide();
 593
 594   client->applyStartupState();
 595
 596   otk::display->ungrab();
 597
 598   // add to the screen's list
 599   clients.push_back(client);
 600   // once the client is in the list, update our strut to include the new
 601   // client's (it is good that this happens after window placement!)
 602   updateStruts();
 603   // this puts into the stacking order, then raises it
 604   _stacking.push_back(client);
 605   raiseWindow(client);
 606   // update the root properties
 607   changeClientList();
 608
 609   openbox->bindings()->grabButtons(true, client);
 610
 611   EventData ndata(_number, client, EventAction::NewWindow, 0);
 612   openbox->bindings()->fireEvent(&ndata);
 613
 614 #ifdef DEBUG
 615   printf("Managed window 0x%lx frame 0x%lx\n",
 616          window, client->frame->window());
 617 #endif
 618 }
 619
 620
 621 void Screen::unmanageWindow(Client *client)
 622 {
 623   Frame *frame = client->frame;
 624
 625   // call the python CLOSEWINDOW binding
 626   EventData data(_number, client, EventAction::CloseWindow, 0);
 627   openbox->bindings()->fireEvent(&data);
 628
 629   openbox->bindings()->grabButtons(false, client);
 630
 631   // remove from the wm's map
 632   openbox->removeClient(client->window());
 633   Window *w = frame->allWindows();
 634   for (unsigned int i = 0; w[i]; ++i)
 635     openbox->addClient(w[i], client);
 636   delete [] w;
 637   // unregister for handling events
 638   openbox->clearHandler(client->window());
 639
 640   // remove the window from our save set
 641   XChangeSaveSet(**otk::display, client->window(), SetModeDelete);
 642
 643   // we dont want events no more
 644   XSelectInput(**otk::display, client->window(), NoEventMask);
 645
 646   frame->hide();
 647
 648   // give the client its border back
 649   client->toggleClientBorder(true);
 650
 651   // reparent the window out of the frame
 652   frame->releaseClient();
 653
 654 #ifdef DEBUG
 655   Window framewin = client->frame->window();
 656 #endif
 657   delete client->frame;
 658   client->frame = 0;
 659
 660   // remove from the stacking order
 661   _stacking.remove(client);
 662
 663   // remove from the screen's list
 664   clients.remove(client);
 665
 666   // once the client is out of the list, update our strut to remove it's
 667   // influence
 668   updateStruts();
 669
 670   // unset modal before dropping our focus
 671   client->_modal = false;
 672
 673   // unfocus the client (calls the focus callbacks)
 674   if (client->focused()) client->unfocus();
 675
 676 #ifdef DEBUG
 677   printf("Unmanaged window 0x%lx frame 0x%lx\n", client->window(), framewin);
 678 #endif
 679
 680   delete client;
 681
 682   // update the root properties
 683   changeClientList();
 684 }
 685
 686 void Screen::lowerWindow(Client *client)
 687 {
 688   Window wins[2];  // only ever restack 2 windows.
 689
 690   assert(!_stacking.empty()); // this would be bad
 691
 692   ClientList::iterator it = --_stacking.end();
 693   const ClientList::iterator end = _stacking.begin();
 694
 695   if (client->modal() && client->transientFor()) {
 696     // don't let a modal window lower below its transient_for
 697     it = std::find(_stacking.begin(), _stacking.end(), client->transientFor());
 698     assert(it != _stacking.end());
 699
 700     wins[0] = (it == _stacking.begin() ? _focuswindow :
 701                ((*(--ClientList::const_iterator(it)))->frame->window()));
 702     wins[1] = client->frame->window();
 703     if (wins[0] == wins[1]) return; // already right above the window
 704
 705     _stacking.remove(client);
 706     _stacking.insert(it, client);
 707   } else {
 708     for (; it != end && (*it)->layer() < client->layer(); --it);
 709     if (*it == client) return;          // already the bottom, return
 710
 711     wins[0] = (*it)->frame->window();
 712     wins[1] = client->frame->window();
 713
 714     _stacking.remove(client);
 715     _stacking.insert(++it, client);
 716   }
 717
 718   XRestackWindows(**otk::display, wins, 2);
 719   changeStackingList();
 720 }
 721
 722 void Screen::raiseWindow(Client *client)
 723 {
 724   Window wins[2];  // only ever restack 2 windows.
 725
 726   assert(!_stacking.empty()); // this would be bad
 727
 728   Client *m = client->findModalChild();
 729   // if we have a modal child, raise it instead, we'll go along tho later
 730   if (m) raiseWindow(m);
 731
 732   // remove the client before looking so we can't run into ourselves
 733   _stacking.remove(client);
 734
 735   ClientList::iterator it = _stacking.begin();
 736   const ClientList::iterator end = _stacking.end();
 737
 738   // the stacking list is from highest to lowest
 739   for (; it != end && ((*it)->layer() > client->layer() || m == *it); ++it);
 740
 741   /*
 742     if our new position is the top, we want to stack under the _focuswindow
 743     otherwise, we want to stack under the previous window in the stack.
 744   */
 745   wins[0] = (it == _stacking.begin() ? _focuswindow :
 746              ((*(--ClientList::const_iterator(it)))->frame->window()));
 747   wins[1] = client->frame->window();
 748
 749   _stacking.insert(it, client);
 750
 751   XRestackWindows(**otk::display, wins, 2);
 752
 753   changeStackingList();
 754 }
 755
 756 void Screen::changeDesktop(unsigned int desktop)
 757 {
 758   if (desktop >= _num_desktops) return;
 759
 760   printf("Moving to desktop %u\n", desktop);
 761
 762   unsigned int old = _desktop;
 763
 764   _desktop = desktop;
 765   otk::Property::set(_info->rootWindow(),
 766                      otk::Property::atoms.net_current_desktop,
 767                      otk::Property::atoms.cardinal, _desktop);
 768
 769   if (old == _desktop) return;
 770
 771   ClientList::iterator it, end = clients.end();
 772   for (it = clients.begin(); it != end; ++it)
 773     (*it)->showhide();
 774
 775   // force the callbacks to fire
 776   if (!openbox->focusedClient())
 777     openbox->setFocusedClient(0);
 778 }
 779
 780 void Screen::changeNumDesktops(unsigned int num)
 781 {
 782   assert(num > 0);
 783
 784   if (!(num > 0)) return;
 785
 786   // move windows on desktops that will no longer exist!
 787   ClientList::iterator it, end = clients.end();
 788   for (it = clients.begin(); it != end; ++it) {
 789     unsigned int d = (*it)->desktop();
 790     if (d >= num && d != 0xffffffff) {
 791       XEvent ce;
 792       ce.xclient.type = ClientMessage;
 793       ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 794       ce.xclient.display = **otk::display;
 795       ce.xclient.window = (*it)->window();
 796       ce.xclient.format = 32;
 797       ce.xclient.data.l[0] = num - 1;
 798       XSendEvent(**otk::display, _info->rootWindow(), False,
 799                  SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 800     }
 801   }
 802
 803   _num_desktops = num;
 804   otk::Property::set(_info->rootWindow(),
 805                      otk::Property::atoms.net_number_of_desktops,
 806                      otk::Property::atoms.cardinal, _num_desktops);
 807
 808   // set the viewport hint
 809   unsigned long *viewport = new unsigned long[_num_desktops * 2];
 810   memset(viewport, 0, sizeof(unsigned long) * _num_desktops * 2);
 811   otk::Property::set(_info->rootWindow(),
 812                      otk::Property::atoms.net_desktop_viewport,
 813                      otk::Property::atoms.cardinal,
 814                      viewport, _num_desktops * 2);
 815   delete [] viewport;
 816
 817   // change our struts/area to match
 818   _area.resize(_num_desktops + 1);
 819   _struts.resize(_num_desktops + 1);
 820   updateStruts();
 821
 822   // the number of rows/columns will differ
 823   updateDesktopLayout();
 824
 825   // change our desktop if we're on one that no longer exists!
 826   if (_desktop >= _num_desktops)
 827     changeDesktop(_num_desktops - 1);
 828 }
 829
 830
 831 void Screen::updateDesktopNames()
 832 {
 833   unsigned long num = (unsigned) -1;
 834
 835   if (!otk::Property::get(_info->rootWindow(),
 836                           otk::Property::atoms.net_desktop_names,
 837                           otk::Property::utf8, &num, &_desktop_names))
 838     _desktop_names.clear();
 839   while (_desktop_names.size() < _num_desktops)
 840     _desktop_names.push_back("Unnamed");
 841 }
 842
 843
 844 void Screen::setDesktopName(unsigned int i, const otk::ustring &name)
 845 {
 846   if (i >= _num_desktops) return;
 847
 848   otk::Property::StringVect newnames = _desktop_names;
 849   newnames[i] = name;
 850   otk::Property::set(_info->rootWindow(),
 851                      otk::Property::atoms.net_desktop_names,
 852                      otk::Property::utf8, newnames);
 853 }
 854
 855 otk::ustring Screen::desktopName(unsigned int i) const
 856 {
 857   if (i >= _num_desktops) return "";
 858   return _desktop_names[i];
 859 }
 860
 861 const otk::Rect& Screen::area(unsigned int desktop) const {
 862   assert(desktop < _num_desktops || desktop == 0xffffffff);
 863   if (desktop < _num_desktops)
 864     return _area[desktop];
 865   else
 866     return _area[_num_desktops];
 867 }
 868
 869 void Screen::installColormap(bool install) const
 870 {
 871   if (install)
 872     XInstallColormap(**otk::display, _info->colormap());
 873   else
 874     XUninstallColormap(**otk::display, _info->colormap());
 875 }
 876
 877 void Screen::showDesktop(bool show)
 878 {
 879   if (show == _showing_desktop) return; // no change
 880
 881   // save the window focus, and restore it when leaving the show-desktop mode
 882   static Window saved_focus = 0;
 883   if (show) {
 884     Client *c = openbox->focusedClient();
 885     if (c) saved_focus = c->window();
 886   }
 887
 888   _showing_desktop = show;
 889
 890   ClientList::iterator it, end = clients.end();
 891   for (it = clients.begin(); it != end; ++it) {
 892     if ((*it)->type() == Client::Type_Desktop) {
 893       if (show)
 894         (*it)->focus();
 895     } else
 896       (*it)->showhide();
 897   }
 898
 899   if (!show) {
 900     Client *f = openbox->focusedClient();
 901     if (!f || f->type() == Client::Type_Desktop) {
 902       Client *c = openbox->findClient(saved_focus);
 903       if (c) c->focus();
 904     }
 905   }
 906
 907   otk::Property::set(_info->rootWindow(),
 908                      otk::Property::atoms.net_showing_desktop,
 909                      otk::Property::atoms.cardinal,
 910                      show ? 1 : 0);
 911 }
 912
 913 void Screen::propertyHandler(const XPropertyEvent &e)
 914 {
 915   otk::EventHandler::propertyHandler(e);
 916
 917   // compress changes to a single property into a single change
 918   XEvent ce;
 919   while (XCheckTypedWindowEvent(**otk::display, _info->rootWindow(),
 920                                 e.type, &ce)) {
 921     // XXX: it would be nice to compress ALL changes to a property, not just
 922     //      changes in a row without other props between.
 923     if (ce.xproperty.atom != e.atom) {
 924       XPutBackEvent(**otk::display, &ce);
 925       break;
 926     }
 927   }
 928
 929   if (e.atom == otk::Property::atoms.net_desktop_names)
 930     updateDesktopNames();
 931   else if (e.atom == otk::Property::atoms.net_desktop_layout)
 932     updateDesktopLayout();
 933 }
 934
 935
 936 void Screen::clientMessageHandler(const XClientMessageEvent &e)
 937 {
 938   otk::EventHandler::clientMessageHandler(e);
 939
 940   if (e.format != 32) return;
 941
 942   if (e.message_type == otk::Property::atoms.net_current_desktop) {
 943     changeDesktop(e.data.l[0]);
 944   } else if (e.message_type == otk::Property::atoms.net_number_of_desktops) {
 945     changeNumDesktops(e.data.l[0]);
 946   } else if (e.message_type == otk::Property::atoms.net_showing_desktop) {
 947     showDesktop(e.data.l[0] != 0);
 948   }
 949 }
 950
 951
 952 void Screen::mapRequestHandler(const XMapRequestEvent &e)
 953 {
 954   otk::EventHandler::mapRequestHandler(e);
 955
 956 #ifdef    DEBUG
 957   printf("MapRequest for 0x%lx\n", e.window);
 958 #endif // DEBUG
 959
 960   Client *c = openbox->findClient(e.window);
 961   if (c) {
 962 #ifdef DEBUG
 963     printf("DEBUG: MAP REQUEST CAUGHT IN SCREEN. IGNORED.\n");
 964 #endif
 965   } else {
 966     if (_showing_desktop)
 967       showDesktop(false); // leave showing-the-desktop mode
 968     manageWindow(e.window);
 969   }
 970 }
 971
 972 }