Dogcows Code - chaz/openbox/blob - src/screen.cc

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