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_UNISTD_H
  13 #  include <sys/types.h>
  14 #  include <unistd.h>
  15 #endif // HAVE_UNISTD_H
  16
  17 #include "gettext.h"
  18 #define _(str) gettext(str)
  19 }
  20
  21 #include "screen.hh"
  22 #include "client.hh"
  23 #include "openbox.hh"
  24 #include "frame.hh"
  25 #include "bindings.hh"
  26 #include "python.hh"
  27 #include "otk/display.hh"
  28
  29 #include <vector>
  30
  31 static bool running;
  32 static int anotherWMRunning(Display *display, XErrorEvent *) {
  33   printf(_("Another window manager already running on display %s.\n"),
  34          DisplayString(display));
  35   running = true;
  36   return -1;
  37 }
  38
  39
  40 namespace ob {
  41
  42
  43 OBScreen::OBScreen(int screen)
  44   : _number(screen),
  45     _root(screen)
  46 {
  47   assert(screen >= 0); assert(screen < ScreenCount(otk::OBDisplay::display));
  48   _info = otk::OBDisplay::screenInfo(screen);
  49
  50   ::running = false;
  51   XErrorHandler old = XSetErrorHandler(::anotherWMRunning);
  52   XSelectInput(otk::OBDisplay::display, _info->rootWindow(),
  53                OBScreen::event_mask);
  54   XSync(otk::OBDisplay::display, false);
  55   XSetErrorHandler(old);
  56
  57   _managed = !::running;
  58   if (! _managed) return; // was unable to manage the screen
  59
  60   printf(_("Managing screen %d: visual 0x%lx, depth %d\n"),
  61          _number, XVisualIDFromVisual(_info->visual()), _info->depth());
  62
  63   Openbox::instance->property()->set(_info->rootWindow(),
  64                                      otk::OBProperty::openbox_pid,
  65                                      otk::OBProperty::Atom_Cardinal,
  66                                      (unsigned long) getpid());
  67
  68   // set the mouse cursor for the root window (the default cursor)
  69   XDefineCursor(otk::OBDisplay::display, _info->rootWindow(),
  70                 Openbox::instance->cursors().session);
  71
  72   // initialize the shit that is used for all drawing on the screen
  73   _image_control = new otk::BImageControl(Openbox::instance->timerManager(),
  74                                           _info, true);
  75   _image_control->installRootColormap();
  76   _root_cmap_installed = True;
  77
  78   // initialize the screen's style
  79   _style.setImageControl(_image_control);
  80   std::string stylepath;
  81   python_get_string("theme", &stylepath);
  82   otk::Configuration sconfig(false);
  83   sconfig.setFile(otk::expandTilde(stylepath));
  84   if (!sconfig.load()) {
  85     sconfig.setFile(otk::expandTilde(DEFAULTSTYLE));
  86     if (!sconfig.load()) {
  87       printf(_("Unable to load default style: %s. Aborting.\n"), DEFAULTSTYLE);
  88       ::exit(1);
  89     }
  90   }
  91   _style.load(sconfig);
  92
  93   // set up notification of netwm support
  94   setSupportedAtoms();
  95
  96   // Set the netwm atoms for geomtery and viewport
  97   unsigned long geometry[] = { _info->width(),
  98                                _info->height() };
  99   Openbox::instance->property()->set(_info->rootWindow(),
 100                                      otk::OBProperty::net_desktop_geometry,
 101                                      otk::OBProperty::Atom_Cardinal,
 102                                      geometry, 2);
 103   unsigned long viewport[] = { 0, 0 };
 104   Openbox::instance->property()->set(_info->rootWindow(),
 105                                      otk::OBProperty::net_desktop_viewport,
 106                                      otk::OBProperty::Atom_Cardinal,
 107                                      viewport, 2);
 108
 109   // create the window which gets focus when no clients get it
 110   XSetWindowAttributes attr;
 111   attr.override_redirect = true;
 112   _focuswindow = XCreateWindow(otk::OBDisplay::display, _info->rootWindow(),
 113                                -100, -100, 1, 1, 0, 0, InputOnly,
 114                                _info->visual(), CWOverrideRedirect, &attr);
 115   XMapWindow(otk::OBDisplay::display, _focuswindow);
 116
 117   // these may be further updated if any pre-existing windows are found in
 118   // the manageExising() function
 119   setClientList();     // initialize the client lists, which will be empty
 120   calcArea();          // initialize the available working area
 121 }
 122
 123
 124 OBScreen::~OBScreen()
 125 {
 126   if (! _managed) return;
 127
 128   XSelectInput(otk::OBDisplay::display, _info->rootWindow(), NoEventMask);
 129
 130   // unmanage all windows
 131   while (!clients.empty())
 132     unmanageWindow(clients.front());
 133
 134   XDestroyWindow(otk::OBDisplay::display, _focuswindow);
 135   XDestroyWindow(otk::OBDisplay::display, _supportwindow);
 136
 137   delete _image_control;
 138 }
 139
 140
 141 void OBScreen::manageExisting()
 142 {
 143   unsigned int i, j, nchild;
 144   Window r, p, *children;
 145   XQueryTree(otk::OBDisplay::display, _info->rootWindow(), &r, &p,
 146              &children, &nchild);
 147
 148   // preen the window list of all icon windows... for better dockapp support
 149   for (i = 0; i < nchild; i++) {
 150     if (children[i] == None) continue;
 151
 152     XWMHints *wmhints = XGetWMHints(otk::OBDisplay::display,
 153                                     children[i]);
 154
 155     if (wmhints) {
 156       if ((wmhints->flags & IconWindowHint) &&
 157           (wmhints->icon_window != children[i])) {
 158         for (j = 0; j < nchild; j++) {
 159           if (children[j] == wmhints->icon_window) {
 160             children[j] = None;
 161             break;
 162           }
 163         }
 164       }
 165
 166       XFree(wmhints);
 167     }
 168   }
 169
 170   // manage shown windows
 171   for (i = 0; i < nchild; ++i) {
 172     if (children[i] == None)
 173       continue;
 174
 175     XWindowAttributes attrib;
 176     if (XGetWindowAttributes(otk::OBDisplay::display, children[i], &attrib)) {
 177       if (attrib.override_redirect) continue;
 178
 179       if (attrib.map_state != IsUnmapped) {
 180         manageWindow(children[i]);
 181       }
 182     }
 183   }
 184
 185   XFree(children);
 186 }
 187
 188
 189 //! Adds a window's strut to the screen's list of reserved spaces
 190 void OBScreen::addStrut(otk::Strut *strut)
 191 {
 192   _struts.push_back(strut);
 193 }
 194
 195
 196 //! Removes a window's strut from the screen's list of reserved spaces
 197 void OBScreen::removeStrut(otk::Strut *strut)
 198 {
 199   _struts.remove(strut);
 200 }
 201
 202
 203 void OBScreen::calcArea()
 204 {
 205   otk::Rect old_area = _area;
 206
 207 /*
 208 #ifdef    XINERAMA
 209   // reset to the full areas
 210   if (isXineramaActive())
 211     xineramaUsableArea = getXineramaAreas();
 212 #endif // XINERAMA
 213 */
 214
 215   /* these values represent offsets from the screen edge
 216    * we look for the biggest offset on each edge and then apply them
 217    * all at once
 218    * do not be confused by the similarity to the names of Rect's members
 219    */
 220   unsigned int current_left = 0, current_right = 0, current_top = 0,
 221     current_bottom = 0;
 222
 223   StrutList::const_iterator it = _struts.begin(), end = _struts.end();
 224
 225   for(; it != end; ++it) {
 226     otk::Strut *strut = *it;
 227     if (strut->left > current_left)
 228       current_left = strut->left;
 229     if (strut->top > current_top)
 230       current_top = strut->top;
 231     if (strut->right > current_right)
 232       current_right = strut->right;
 233     if (strut->bottom > current_bottom)
 234       current_bottom = strut->bottom;
 235   }
 236
 237   _area.setRect(current_left, current_top,
 238                 _info->width() - (current_left + current_right),
 239                 _info->height() - (current_top + current_bottom));
 240
 241 /*
 242 #ifdef    XINERAMA
 243   if (isXineramaActive()) {
 244     // keep each of the ximerama-defined areas inside the strut
 245     RectList::iterator xit, xend = xineramaUsableArea.end();
 246     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 247       if (xit->x() < usableArea.x()) {
 248         xit->setX(usableArea.x());
 249         xit->setWidth(xit->width() - usableArea.x());
 250       }
 251       if (xit->y() < usableArea.y()) {
 252         xit->setY(usableArea.y());
 253         xit->setHeight(xit->height() - usableArea.y());
 254       }
 255       if (xit->x() + xit->width() > usableArea.width())
 256         xit->setWidth(usableArea.width() - xit->x());
 257       if (xit->y() + xit->height() > usableArea.height())
 258         xit->setHeight(usableArea.height() - xit->y());
 259     }
 260   }
 261 #endif // XINERAMA
 262 */
 263
 264   if (old_area != _area)
 265     // XXX: re-maximize windows
 266
 267   setWorkArea();
 268 }
 269
 270
 271 void OBScreen::setSupportedAtoms()
 272 {
 273   // create the netwm support window
 274   _supportwindow = XCreateSimpleWindow(otk::OBDisplay::display,
 275                                        _info->rootWindow(),
 276                                        0, 0, 1, 1, 0, 0, 0);
 277   assert(_supportwindow != None);
 278
 279   // set supporting window
 280   Openbox::instance->property()->set(_info->rootWindow(),
 281                                      otk::OBProperty::net_supporting_wm_check,
 282                                      otk::OBProperty::Atom_Window,
 283                                      _supportwindow);
 284
 285   //set properties on the supporting window
 286   Openbox::instance->property()->set(_supportwindow,
 287                                      otk::OBProperty::net_wm_name,
 288                                      otk::OBProperty::utf8,
 289                                      "Openbox");
 290   Openbox::instance->property()->set(_supportwindow,
 291                                      otk::OBProperty::net_supporting_wm_check,
 292                                      otk::OBProperty::Atom_Window,
 293                                      _supportwindow);
 294
 295
 296   Atom supported[] = {
 297 /*
 298       otk::OBProperty::net_current_desktop,
 299       otk::OBProperty::net_number_of_desktops,
 300 */
 301       otk::OBProperty::net_desktop_geometry,
 302       otk::OBProperty::net_desktop_viewport,
 303       otk::OBProperty::net_active_window,
 304       otk::OBProperty::net_workarea,
 305       otk::OBProperty::net_client_list,
 306       otk::OBProperty::net_client_list_stacking,
 307 /*
 308       otk::OBProperty::net_desktop_names,
 309 */
 310       otk::OBProperty::net_close_window,
 311       otk::OBProperty::net_wm_name,
 312       otk::OBProperty::net_wm_visible_name,
 313       otk::OBProperty::net_wm_icon_name,
 314       otk::OBProperty::net_wm_visible_icon_name,
 315 /*
 316       otk::OBProperty::net_wm_desktop,
 317 */
 318 /*
 319       otk::OBProperty::net_wm_strut,
 320 */
 321       otk::OBProperty::net_wm_window_type,
 322       otk::OBProperty::net_wm_window_type_desktop,
 323       otk::OBProperty::net_wm_window_type_dock,
 324       otk::OBProperty::net_wm_window_type_toolbar,
 325       otk::OBProperty::net_wm_window_type_menu,
 326       otk::OBProperty::net_wm_window_type_utility,
 327       otk::OBProperty::net_wm_window_type_splash,
 328       otk::OBProperty::net_wm_window_type_dialog,
 329       otk::OBProperty::net_wm_window_type_normal,
 330 /*
 331       otk::OBProperty::net_wm_moveresize,
 332       otk::OBProperty::net_wm_moveresize_size_topleft,
 333       otk::OBProperty::net_wm_moveresize_size_topright,
 334       otk::OBProperty::net_wm_moveresize_size_bottomleft,
 335       otk::OBProperty::net_wm_moveresize_size_bottomright,
 336       otk::OBProperty::net_wm_moveresize_move,
 337 */
 338 /*
 339       otk::OBProperty::net_wm_allowed_actions,
 340       otk::OBProperty::net_wm_action_move,
 341       otk::OBProperty::net_wm_action_resize,
 342       otk::OBProperty::net_wm_action_shade,
 343       otk::OBProperty::net_wm_action_maximize_horz,
 344       otk::OBProperty::net_wm_action_maximize_vert,
 345       otk::OBProperty::net_wm_action_change_desktop,
 346       otk::OBProperty::net_wm_action_close,
 347 */
 348       otk::OBProperty::net_wm_state,
 349       otk::OBProperty::net_wm_state_modal,
 350       otk::OBProperty::net_wm_state_maximized_vert,
 351       otk::OBProperty::net_wm_state_maximized_horz,
 352       otk::OBProperty::net_wm_state_shaded,
 353       otk::OBProperty::net_wm_state_skip_taskbar,
 354       otk::OBProperty::net_wm_state_skip_pager,
 355       otk::OBProperty::net_wm_state_hidden,
 356       otk::OBProperty::net_wm_state_fullscreen,
 357       otk::OBProperty::net_wm_state_above,
 358       otk::OBProperty::net_wm_state_below,
 359     };
 360   const int num_supported = sizeof(supported)/sizeof(Atom);
 361
 362   // convert to the atom values
 363   for (int i = 0; i < num_supported; ++i)
 364     supported[i] = Openbox::instance->property()->atom(supported[i]);
 365
 366   Openbox::instance->property()->set(_info->rootWindow(),
 367                                      otk::OBProperty::net_supported,
 368                                      otk::OBProperty::Atom_Atom,
 369                                      supported, num_supported);
 370 }
 371
 372
 373 void OBScreen::setClientList()
 374 {
 375   Window *windows;
 376   unsigned int size = clients.size();
 377
 378   // create an array of the window ids
 379   if (size > 0) {
 380     Window *win_it;
 381
 382     windows = new Window[size];
 383     win_it = windows;
 384     ClientList::const_iterator it = clients.begin();
 385     const ClientList::const_iterator end = clients.end();
 386     for (; it != end; ++it, ++win_it)
 387       *win_it = (*it)->window();
 388   } else
 389     windows = (Window*) 0;
 390
 391   Openbox::instance->property()->set(_info->rootWindow(),
 392                                      otk::OBProperty::net_client_list,
 393                                      otk::OBProperty::Atom_Window,
 394                                      windows, size);
 395
 396   if (size)
 397     delete [] windows;
 398
 399   setStackingList();
 400 }
 401
 402
 403 void OBScreen::setStackingList()
 404 {
 405   Window *windows;
 406   unsigned int size = _stacking.size();
 407
 408   assert(size == clients.size()); // just making sure.. :)
 409
 410
 411   // create an array of the window ids
 412   if (size > 0) {
 413     Window *win_it;
 414
 415     windows = new Window[size];
 416     win_it = windows;
 417     ClientList::const_iterator it = _stacking.begin();
 418     const ClientList::const_iterator end = _stacking.end();
 419     for (; it != end; ++it, ++win_it)
 420       *win_it = (*it)->window();
 421   } else
 422     windows = (Window*) 0;
 423
 424   Openbox::instance->property()->set(_info->rootWindow(),
 425                                      otk::OBProperty::net_client_list_stacking,
 426                                      otk::OBProperty::Atom_Window,
 427                                      windows, size);
 428
 429   if (size)
 430     delete [] windows;
 431 }
 432
 433
 434 void OBScreen::setWorkArea() {
 435   unsigned long area[] = { _area.x(), _area.y(),
 436                            _area.width(), _area.height() };
 437   Openbox::instance->property()->set(_info->rootWindow(),
 438                                      otk::OBProperty::net_workarea,
 439                                      otk::OBProperty::Atom_Cardinal,
 440                                      area, 4);
 441   /*
 442   if (workspacesList.size() > 0) {
 443     unsigned long *dims = new unsigned long[4 * workspacesList.size()];
 444     for (unsigned int i = 0, m = workspacesList.size(); i < m; ++i) {
 445       // XXX: this could be different for each workspace
 446       const otk::Rect &area = availableArea();
 447       dims[(i * 4) + 0] = area.x();
 448       dims[(i * 4) + 1] = area.y();
 449       dims[(i * 4) + 2] = area.width();
 450       dims[(i * 4) + 3] = area.height();
 451     }
 452     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 453                otk::OBProperty::Atom_Cardinal,
 454                dims, 4 * workspacesList.size());
 455     delete [] dims;
 456   } else
 457     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 458                otk::OBProperty::Atom_Cardinal, 0, 0);
 459   */
 460 }
 461
 462
 463 void OBScreen::manageWindow(Window window)
 464 {
 465   OBClient *client = 0;
 466   XWMHints *wmhint;
 467   XSetWindowAttributes attrib_set;
 468
 469   // is the window a docking app
 470   if ((wmhint = XGetWMHints(otk::OBDisplay::display, window))) {
 471     if ((wmhint->flags & StateHint) &&
 472         wmhint->initial_state == WithdrawnState) {
 473       //slit->addClient(w); // XXX: make dock apps work!
 474       XFree(wmhint);
 475       return;
 476     }
 477     XFree(wmhint);
 478   }
 479
 480   otk::OBDisplay::grab();
 481
 482   // choose the events we want to receive on the CLIENT window
 483   attrib_set.event_mask = OBClient::event_mask;
 484   attrib_set.do_not_propagate_mask = OBClient::no_propagate_mask;
 485   XChangeWindowAttributes(otk::OBDisplay::display, window,
 486                           CWEventMask|CWDontPropagate, &attrib_set);
 487
 488   // create the OBClient class, which gets all of the hints on the window
 489   client = new OBClient(_number, window);
 490   // register for events
 491   Openbox::instance->registerHandler(window, client);
 492   // add to the wm's map
 493   Openbox::instance->addClient(window, client);
 494
 495   // we dont want a border on the client
 496   client->toggleClientBorder(false);
 497
 498   // specify that if we exit, the window should not be destroyed and should be
 499   // reparented back to root automatically
 500   XChangeSaveSet(otk::OBDisplay::display, window, SetModeInsert);
 501
 502   if (!client->positionRequested()) {
 503     // XXX: position the window intelligenty
 504   }
 505
 506   // create the decoration frame for the client window
 507   client->frame = new OBFrame(client, &_style);
 508
 509   // add to the wm's map
 510   Openbox::instance->addClient(client->frame->window(), client);
 511   Openbox::instance->addClient(client->frame->plate(), client);
 512   Openbox::instance->addClient(client->frame->titlebar(), client);
 513   Openbox::instance->addClient(client->frame->label(), client);
 514   Openbox::instance->addClient(client->frame->button_max(), client);
 515   Openbox::instance->addClient(client->frame->button_iconify(), client);
 516   Openbox::instance->addClient(client->frame->button_stick(), client);
 517   Openbox::instance->addClient(client->frame->button_close(), client);
 518   Openbox::instance->addClient(client->frame->handle(), client);
 519   Openbox::instance->addClient(client->frame->grip_left(), client);
 520   Openbox::instance->addClient(client->frame->grip_right(), client);
 521
 522   // XXX: if on the current desktop..
 523   client->frame->show();
 524
 525   // XXX: handle any requested states such as shaded/maximized
 526
 527   otk::OBDisplay::ungrab();
 528
 529   // add to the screen's list
 530   clients.push_back(client);
 531   // this puts into the stacking order, then raises it
 532   _stacking.push_back(client);
 533   restack(true, client);
 534   // update the root properties
 535   setClientList();
 536
 537   Openbox::instance->bindings()->grabButtons(true, client);
 538 }
 539
 540
 541 void OBScreen::unmanageWindow(OBClient *client)
 542 {
 543   OBFrame *frame = client->frame;
 544
 545   Openbox::instance->bindings()->grabButtons(false, client);
 546
 547   // remove from the stacking order
 548   _stacking.remove(client);
 549
 550   // pass around focus if this window was focused XXX do this better!
 551   if (Openbox::instance->focusedClient() == client) {
 552     OBClient *newfocus = 0;
 553     if (!_stacking.empty())
 554       newfocus = _stacking.front();
 555     if (! (newfocus && newfocus->focus()))
 556       client->unfocus();
 557   }
 558
 559   // remove from the wm's map
 560   Openbox::instance->removeClient(client->window());
 561   Openbox::instance->removeClient(frame->window());
 562   Openbox::instance->removeClient(frame->plate());
 563   Openbox::instance->removeClient(frame->titlebar());
 564   Openbox::instance->removeClient(frame->label());
 565   Openbox::instance->removeClient(frame->button_max());
 566   Openbox::instance->removeClient(frame->button_iconify());
 567   Openbox::instance->removeClient(frame->button_stick());
 568   Openbox::instance->removeClient(frame->button_close());
 569   Openbox::instance->removeClient(frame->handle());
 570   Openbox::instance->removeClient(frame->grip_left());
 571   Openbox::instance->removeClient(frame->grip_right());
 572   // unregister for handling events
 573   Openbox::instance->clearHandler(client->window());
 574
 575   // remove the window from our save set
 576   XChangeSaveSet(otk::OBDisplay::display, client->window(), SetModeDelete);
 577
 578   // we dont want events no more
 579   XSelectInput(otk::OBDisplay::display, client->window(), NoEventMask);
 580
 581   frame->hide();
 582
 583   // give the client its border back
 584   client->toggleClientBorder(true);
 585
 586   delete client->frame;
 587   client->frame = 0;
 588
 589   // remove from the screen's list
 590   clients.remove(client);
 591   delete client;
 592
 593   // update the root properties
 594   setClientList();
 595 }
 596
 597 void OBScreen::restack(bool raise, OBClient *client)
 598 {
 599   const int layer = client->layer();
 600   std::vector<Window> wins;
 601
 602   _stacking.remove(client);
 603
 604   // the stacking list is from highest to lowest
 605
 606   ClientList::iterator it = _stacking.begin(), end = _stacking.end();
 607   // insert the windows above this window
 608   for (; it != end; ++it) {
 609     if ((*it)->layer() < layer || (raise && (*it)->layer() == layer))
 610       break;
 611     wins.push_back((*it)->frame->window());
 612   }
 613   // insert our client
 614   wins.push_back(client->frame->window());
 615   _stacking.insert(it, client);
 616   // insert the remaining below this window
 617   for (; it != end; ++it)
 618     wins.push_back((*it)->frame->window());
 619
 620   XRestackWindows(otk::OBDisplay::display, &wins[0], wins.size());
 621   setStackingList();
 622 }
 623
 624 }