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 properties for geometry 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   // Set the net_desktop_names property
 110   std::vector<std::string> names;
 111   python_get_stringlist("desktop_names", &names);
 112   _root.setDesktopNames(names);
 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::OBDisplay::display, _info->rootWindow(),
 118                                -100, -100, 1, 1, 0, 0, InputOnly,
 119                                _info->visual(), CWOverrideRedirect, &attr);
 120   XMapWindow(otk::OBDisplay::display, _focuswindow);
 121
 122   // these may be further updated if any pre-existing windows are found in
 123   // the manageExising() function
 124   setClientList();     // initialize the client lists, which will be empty
 125   calcArea();          // initialize the available working area
 126 }
 127
 128
 129 OBScreen::~OBScreen()
 130 {
 131   if (! _managed) return;
 132
 133   XSelectInput(otk::OBDisplay::display, _info->rootWindow(), NoEventMask);
 134
 135   // unmanage all windows
 136   while (!clients.empty())
 137     unmanageWindow(clients.front());
 138
 139   XDestroyWindow(otk::OBDisplay::display, _focuswindow);
 140   XDestroyWindow(otk::OBDisplay::display, _supportwindow);
 141
 142   delete _image_control;
 143 }
 144
 145
 146 void OBScreen::manageExisting()
 147 {
 148   unsigned int i, j, nchild;
 149   Window r, p, *children;
 150   XQueryTree(otk::OBDisplay::display, _info->rootWindow(), &r, &p,
 151              &children, &nchild);
 152
 153   // preen the window list of all icon windows... for better dockapp support
 154   for (i = 0; i < nchild; i++) {
 155     if (children[i] == None) continue;
 156
 157     XWMHints *wmhints = XGetWMHints(otk::OBDisplay::display,
 158                                     children[i]);
 159
 160     if (wmhints) {
 161       if ((wmhints->flags & IconWindowHint) &&
 162           (wmhints->icon_window != children[i])) {
 163         for (j = 0; j < nchild; j++) {
 164           if (children[j] == wmhints->icon_window) {
 165             children[j] = None;
 166             break;
 167           }
 168         }
 169       }
 170
 171       XFree(wmhints);
 172     }
 173   }
 174
 175   // manage shown windows
 176   for (i = 0; i < nchild; ++i) {
 177     if (children[i] == None)
 178       continue;
 179
 180     XWindowAttributes attrib;
 181     if (XGetWindowAttributes(otk::OBDisplay::display, children[i], &attrib)) {
 182       if (attrib.override_redirect) continue;
 183
 184       if (attrib.map_state != IsUnmapped) {
 185         manageWindow(children[i]);
 186       }
 187     }
 188   }
 189
 190   XFree(children);
 191 }
 192
 193
 194 //! Adds a window's strut to the screen's list of reserved spaces
 195 void OBScreen::addStrut(otk::Strut *strut)
 196 {
 197   _struts.push_back(strut);
 198 }
 199
 200
 201 //! Removes a window's strut from the screen's list of reserved spaces
 202 void OBScreen::removeStrut(otk::Strut *strut)
 203 {
 204   _struts.remove(strut);
 205 }
 206
 207
 208 void OBScreen::calcArea()
 209 {
 210   otk::Rect old_area = _area;
 211
 212 /*
 213 #ifdef    XINERAMA
 214   // reset to the full areas
 215   if (isXineramaActive())
 216     xineramaUsableArea = getXineramaAreas();
 217 #endif // XINERAMA
 218 */
 219
 220   /* these values represent offsets from the screen edge
 221    * we look for the biggest offset on each edge and then apply them
 222    * all at once
 223    * do not be confused by the similarity to the names of Rect's members
 224    */
 225   unsigned int current_left = 0, current_right = 0, current_top = 0,
 226     current_bottom = 0;
 227
 228   StrutList::const_iterator it = _struts.begin(), end = _struts.end();
 229
 230   for(; it != end; ++it) {
 231     otk::Strut *strut = *it;
 232     if (strut->left > current_left)
 233       current_left = strut->left;
 234     if (strut->top > current_top)
 235       current_top = strut->top;
 236     if (strut->right > current_right)
 237       current_right = strut->right;
 238     if (strut->bottom > current_bottom)
 239       current_bottom = strut->bottom;
 240   }
 241
 242   _area.setRect(current_left, current_top,
 243                 _info->width() - (current_left + current_right),
 244                 _info->height() - (current_top + current_bottom));
 245
 246 /*
 247 #ifdef    XINERAMA
 248   if (isXineramaActive()) {
 249     // keep each of the ximerama-defined areas inside the strut
 250     RectList::iterator xit, xend = xineramaUsableArea.end();
 251     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 252       if (xit->x() < usableArea.x()) {
 253         xit->setX(usableArea.x());
 254         xit->setWidth(xit->width() - usableArea.x());
 255       }
 256       if (xit->y() < usableArea.y()) {
 257         xit->setY(usableArea.y());
 258         xit->setHeight(xit->height() - usableArea.y());
 259       }
 260       if (xit->x() + xit->width() > usableArea.width())
 261         xit->setWidth(usableArea.width() - xit->x());
 262       if (xit->y() + xit->height() > usableArea.height())
 263         xit->setHeight(usableArea.height() - xit->y());
 264     }
 265   }
 266 #endif // XINERAMA
 267 */
 268
 269   if (old_area != _area)
 270     // XXX: re-maximize windows
 271
 272   setWorkArea();
 273 }
 274
 275
 276 void OBScreen::setSupportedAtoms()
 277 {
 278   // create the netwm support window
 279   _supportwindow = XCreateSimpleWindow(otk::OBDisplay::display,
 280                                        _info->rootWindow(),
 281                                        0, 0, 1, 1, 0, 0, 0);
 282   assert(_supportwindow != None);
 283
 284   // set supporting window
 285   Openbox::instance->property()->set(_info->rootWindow(),
 286                                      otk::OBProperty::net_supporting_wm_check,
 287                                      otk::OBProperty::Atom_Window,
 288                                      _supportwindow);
 289
 290   //set properties on the supporting window
 291   Openbox::instance->property()->set(_supportwindow,
 292                                      otk::OBProperty::net_wm_name,
 293                                      otk::OBProperty::utf8,
 294                                      "Openbox");
 295   Openbox::instance->property()->set(_supportwindow,
 296                                      otk::OBProperty::net_supporting_wm_check,
 297                                      otk::OBProperty::Atom_Window,
 298                                      _supportwindow);
 299
 300
 301   Atom supported[] = {
 302 /*
 303       otk::OBProperty::net_current_desktop,
 304       otk::OBProperty::net_number_of_desktops,
 305 */
 306       otk::OBProperty::net_desktop_geometry,
 307       otk::OBProperty::net_desktop_viewport,
 308       otk::OBProperty::net_active_window,
 309       otk::OBProperty::net_workarea,
 310       otk::OBProperty::net_client_list,
 311       otk::OBProperty::net_client_list_stacking,
 312       otk::OBProperty::net_desktop_names,
 313       otk::OBProperty::net_close_window,
 314       otk::OBProperty::net_wm_name,
 315       otk::OBProperty::net_wm_visible_name,
 316       otk::OBProperty::net_wm_icon_name,
 317       otk::OBProperty::net_wm_visible_icon_name,
 318 /*
 319       otk::OBProperty::net_wm_desktop,
 320 */
 321 /*
 322       otk::OBProperty::net_wm_strut,
 323 */
 324       otk::OBProperty::net_wm_window_type,
 325       otk::OBProperty::net_wm_window_type_desktop,
 326       otk::OBProperty::net_wm_window_type_dock,
 327       otk::OBProperty::net_wm_window_type_toolbar,
 328       otk::OBProperty::net_wm_window_type_menu,
 329       otk::OBProperty::net_wm_window_type_utility,
 330       otk::OBProperty::net_wm_window_type_splash,
 331       otk::OBProperty::net_wm_window_type_dialog,
 332       otk::OBProperty::net_wm_window_type_normal,
 333 /*
 334       otk::OBProperty::net_wm_moveresize,
 335       otk::OBProperty::net_wm_moveresize_size_topleft,
 336       otk::OBProperty::net_wm_moveresize_size_topright,
 337       otk::OBProperty::net_wm_moveresize_size_bottomleft,
 338       otk::OBProperty::net_wm_moveresize_size_bottomright,
 339       otk::OBProperty::net_wm_moveresize_move,
 340 */
 341 /*
 342       otk::OBProperty::net_wm_allowed_actions,
 343       otk::OBProperty::net_wm_action_move,
 344       otk::OBProperty::net_wm_action_resize,
 345       otk::OBProperty::net_wm_action_shade,
 346       otk::OBProperty::net_wm_action_maximize_horz,
 347       otk::OBProperty::net_wm_action_maximize_vert,
 348       otk::OBProperty::net_wm_action_change_desktop,
 349       otk::OBProperty::net_wm_action_close,
 350 */
 351       otk::OBProperty::net_wm_state,
 352       otk::OBProperty::net_wm_state_modal,
 353       otk::OBProperty::net_wm_state_maximized_vert,
 354       otk::OBProperty::net_wm_state_maximized_horz,
 355       otk::OBProperty::net_wm_state_shaded,
 356       otk::OBProperty::net_wm_state_skip_taskbar,
 357       otk::OBProperty::net_wm_state_skip_pager,
 358       otk::OBProperty::net_wm_state_hidden,
 359       otk::OBProperty::net_wm_state_fullscreen,
 360       otk::OBProperty::net_wm_state_above,
 361       otk::OBProperty::net_wm_state_below,
 362     };
 363   const int num_supported = sizeof(supported)/sizeof(Atom);
 364
 365   // convert to the atom values
 366   for (int i = 0; i < num_supported; ++i)
 367     supported[i] =
 368       Openbox::instance->property()->atom((otk::OBProperty::Atoms)supported[i]);
 369
 370   Openbox::instance->property()->set(_info->rootWindow(),
 371                                      otk::OBProperty::net_supported,
 372                                      otk::OBProperty::Atom_Atom,
 373                                      supported, num_supported);
 374 }
 375
 376
 377 void OBScreen::setClientList()
 378 {
 379   Window *windows;
 380   unsigned int size = clients.size();
 381
 382   // create an array of the window ids
 383   if (size > 0) {
 384     Window *win_it;
 385
 386     windows = new Window[size];
 387     win_it = windows;
 388     ClientList::const_iterator it = clients.begin();
 389     const ClientList::const_iterator end = clients.end();
 390     for (; it != end; ++it, ++win_it)
 391       *win_it = (*it)->window();
 392   } else
 393     windows = (Window*) 0;
 394
 395   Openbox::instance->property()->set(_info->rootWindow(),
 396                                      otk::OBProperty::net_client_list,
 397                                      otk::OBProperty::Atom_Window,
 398                                      windows, size);
 399
 400   if (size)
 401     delete [] windows;
 402
 403   setStackingList();
 404 }
 405
 406
 407 void OBScreen::setStackingList()
 408 {
 409   Window *windows;
 410   unsigned int size = _stacking.size();
 411
 412   assert(size == clients.size()); // just making sure.. :)
 413
 414
 415   // create an array of the window ids
 416   if (size > 0) {
 417     Window *win_it;
 418
 419     windows = new Window[size];
 420     win_it = windows;
 421     ClientList::const_iterator it = _stacking.begin();
 422     const ClientList::const_iterator end = _stacking.end();
 423     for (; it != end; ++it, ++win_it)
 424       *win_it = (*it)->window();
 425   } else
 426     windows = (Window*) 0;
 427
 428   Openbox::instance->property()->set(_info->rootWindow(),
 429                                      otk::OBProperty::net_client_list_stacking,
 430                                      otk::OBProperty::Atom_Window,
 431                                      windows, size);
 432
 433   if (size)
 434     delete [] windows;
 435 }
 436
 437
 438 void OBScreen::setWorkArea() {
 439   unsigned long area[] = { _area.x(), _area.y(),
 440                            _area.width(), _area.height() };
 441   Openbox::instance->property()->set(_info->rootWindow(),
 442                                      otk::OBProperty::net_workarea,
 443                                      otk::OBProperty::Atom_Cardinal,
 444                                      area, 4);
 445   /*
 446   if (workspacesList.size() > 0) {
 447     unsigned long *dims = new unsigned long[4 * workspacesList.size()];
 448     for (unsigned int i = 0, m = workspacesList.size(); i < m; ++i) {
 449       // XXX: this could be different for each workspace
 450       const otk::Rect &area = availableArea();
 451       dims[(i * 4) + 0] = area.x();
 452       dims[(i * 4) + 1] = area.y();
 453       dims[(i * 4) + 2] = area.width();
 454       dims[(i * 4) + 3] = area.height();
 455     }
 456     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 457                otk::OBProperty::Atom_Cardinal,
 458                dims, 4 * workspacesList.size());
 459     delete [] dims;
 460   } else
 461     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 462                otk::OBProperty::Atom_Cardinal, 0, 0);
 463   */
 464 }
 465
 466
 467 void OBScreen::manageWindow(Window window)
 468 {
 469   OBClient *client = 0;
 470   XWMHints *wmhint;
 471   XSetWindowAttributes attrib_set;
 472
 473   // is the window a docking app
 474   if ((wmhint = XGetWMHints(otk::OBDisplay::display, window))) {
 475     if ((wmhint->flags & StateHint) &&
 476         wmhint->initial_state == WithdrawnState) {
 477       //slit->addClient(w); // XXX: make dock apps work!
 478       XFree(wmhint);
 479       return;
 480     }
 481     XFree(wmhint);
 482   }
 483
 484   otk::OBDisplay::grab();
 485
 486   // choose the events we want to receive on the CLIENT window
 487   attrib_set.event_mask = OBClient::event_mask;
 488   attrib_set.do_not_propagate_mask = OBClient::no_propagate_mask;
 489   XChangeWindowAttributes(otk::OBDisplay::display, window,
 490                           CWEventMask|CWDontPropagate, &attrib_set);
 491
 492   // create the OBClient class, which gets all of the hints on the window
 493   client = new OBClient(_number, window);
 494   // register for events
 495   Openbox::instance->registerHandler(window, client);
 496   // add to the wm's map
 497   Openbox::instance->addClient(window, client);
 498
 499   // we dont want a border on the client
 500   client->toggleClientBorder(false);
 501
 502   // specify that if we exit, the window should not be destroyed and should be
 503   // reparented back to root automatically
 504   XChangeSaveSet(otk::OBDisplay::display, window, SetModeInsert);
 505
 506   if (!client->positionRequested()) {
 507     // XXX: position the window intelligenty
 508   }
 509
 510   // create the decoration frame for the client window
 511   client->frame = new OBFrame(client, &_style);
 512
 513   // add to the wm's map
 514   Openbox::instance->addClient(client->frame->window(), client);
 515   Openbox::instance->addClient(client->frame->plate(), client);
 516   Openbox::instance->addClient(client->frame->titlebar(), client);
 517   Openbox::instance->addClient(client->frame->label(), client);
 518   Openbox::instance->addClient(client->frame->button_max(), client);
 519   Openbox::instance->addClient(client->frame->button_iconify(), client);
 520   Openbox::instance->addClient(client->frame->button_stick(), client);
 521   Openbox::instance->addClient(client->frame->button_close(), client);
 522   Openbox::instance->addClient(client->frame->handle(), client);
 523   Openbox::instance->addClient(client->frame->grip_left(), client);
 524   Openbox::instance->addClient(client->frame->grip_right(), client);
 525
 526   // XXX: if on the current desktop..
 527   client->frame->show();
 528
 529   // XXX: handle any requested states such as shaded/maximized
 530
 531   otk::OBDisplay::ungrab();
 532
 533   // add to the screen's list
 534   clients.push_back(client);
 535   // this puts into the stacking order, then raises it
 536   _stacking.push_back(client);
 537   restack(true, client);
 538   // update the root properties
 539   setClientList();
 540
 541   Openbox::instance->bindings()->grabButtons(true, client);
 542 }
 543
 544
 545 void OBScreen::unmanageWindow(OBClient *client)
 546 {
 547   OBFrame *frame = client->frame;
 548
 549   Openbox::instance->bindings()->grabButtons(false, client);
 550
 551   // remove from the stacking order
 552   _stacking.remove(client);
 553
 554   // pass around focus if this window was focused XXX do this better!
 555   if (Openbox::instance->focusedClient() == client) {
 556     OBClient *newfocus = 0;
 557     if (!_stacking.empty())
 558       newfocus = _stacking.front();
 559     if (! (newfocus && newfocus->focus()))
 560       client->unfocus();
 561   }
 562
 563   // remove from the wm's map
 564   Openbox::instance->removeClient(client->window());
 565   Openbox::instance->removeClient(frame->window());
 566   Openbox::instance->removeClient(frame->plate());
 567   Openbox::instance->removeClient(frame->titlebar());
 568   Openbox::instance->removeClient(frame->label());
 569   Openbox::instance->removeClient(frame->button_max());
 570   Openbox::instance->removeClient(frame->button_iconify());
 571   Openbox::instance->removeClient(frame->button_stick());
 572   Openbox::instance->removeClient(frame->button_close());
 573   Openbox::instance->removeClient(frame->handle());
 574   Openbox::instance->removeClient(frame->grip_left());
 575   Openbox::instance->removeClient(frame->grip_right());
 576   // unregister for handling events
 577   Openbox::instance->clearHandler(client->window());
 578
 579   // remove the window from our save set
 580   XChangeSaveSet(otk::OBDisplay::display, client->window(), SetModeDelete);
 581
 582   // we dont want events no more
 583   XSelectInput(otk::OBDisplay::display, client->window(), NoEventMask);
 584
 585   frame->hide();
 586
 587   // give the client its border back
 588   client->toggleClientBorder(true);
 589
 590   delete client->frame;
 591   client->frame = 0;
 592
 593   // remove from the screen's list
 594   clients.remove(client);
 595   delete client;
 596
 597   // update the root properties
 598   setClientList();
 599 }
 600
 601 void OBScreen::restack(bool raise, OBClient *client)
 602 {
 603   const int layer = client->layer();
 604   std::vector<Window> wins;
 605
 606   _stacking.remove(client);
 607
 608   // the stacking list is from highest to lowest
 609
 610   ClientList::iterator it = _stacking.begin(), end = _stacking.end();
 611   // insert the windows above this window
 612   for (; it != end; ++it) {
 613     if ((*it)->layer() < layer || (raise && (*it)->layer() == layer))
 614       break;
 615     wins.push_back((*it)->frame->window());
 616   }
 617   // insert our client
 618   wins.push_back(client->frame->window());
 619   _stacking.insert(it, client);
 620   // insert the remaining below this window
 621   for (; it != end; ++it)
 622     wins.push_back((*it)->frame->window());
 623
 624   XRestackWindows(otk::OBDisplay::display, &wins[0], wins.size());
 625   setStackingList();
 626 }
 627
 628 }