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 the netwm atoms for geomtery and viewport
  94   unsigned long geometry[] = { _info->width(),
  95                                _info->height() };
  96   Openbox::instance->property()->set(_info->rootWindow(),
  97                                      otk::OBProperty::net_desktop_geometry,
  98                                      otk::OBProperty::Atom_Cardinal,
  99                                      geometry, 2);
 100   unsigned long viewport[] = { 0, 0 };
 101   Openbox::instance->property()->set(_info->rootWindow(),
 102                                      otk::OBProperty::net_desktop_viewport,
 103                                      otk::OBProperty::Atom_Cardinal,
 104                                      viewport, 2);
 105
 106   // create the window which gets focus when no clients get it
 107   XSetWindowAttributes attr;
 108   attr.override_redirect = true;
 109   _focuswindow = XCreateWindow(otk::OBDisplay::display, _info->rootWindow(),
 110                                -100, -100, 1, 1, 0, 0, InputOnly,
 111                                _info->visual(), CWOverrideRedirect, &attr);
 112   XMapWindow(otk::OBDisplay::display, _focuswindow);
 113
 114   // these may be further updated if any pre-existing windows are found in
 115   // the manageExising() function
 116   setClientList();     // initialize the client lists, which will be empty
 117   calcArea();          // initialize the available working area
 118 }
 119
 120
 121 OBScreen::~OBScreen()
 122 {
 123   if (! _managed) return;
 124
 125   // unmanage all windows
 126   while (!clients.empty())
 127     unmanageWindow(clients.front());
 128
 129   delete _image_control;
 130 }
 131
 132
 133 void OBScreen::manageExisting()
 134 {
 135   unsigned int i, j, nchild;
 136   Window r, p, *children;
 137   XQueryTree(otk::OBDisplay::display, _info->rootWindow(), &r, &p,
 138              &children, &nchild);
 139
 140   // preen the window list of all icon windows... for better dockapp support
 141   for (i = 0; i < nchild; i++) {
 142     if (children[i] == None) continue;
 143
 144     XWMHints *wmhints = XGetWMHints(otk::OBDisplay::display,
 145                                     children[i]);
 146
 147     if (wmhints) {
 148       if ((wmhints->flags & IconWindowHint) &&
 149           (wmhints->icon_window != children[i])) {
 150         for (j = 0; j < nchild; j++) {
 151           if (children[j] == wmhints->icon_window) {
 152             children[j] = None;
 153             break;
 154           }
 155         }
 156       }
 157
 158       XFree(wmhints);
 159     }
 160   }
 161
 162   // manage shown windows
 163   for (i = 0; i < nchild; ++i) {
 164     if (children[i] == None)
 165       continue;
 166
 167     XWindowAttributes attrib;
 168     if (XGetWindowAttributes(otk::OBDisplay::display, children[i], &attrib)) {
 169       if (attrib.override_redirect) continue;
 170
 171       if (attrib.map_state != IsUnmapped) {
 172         manageWindow(children[i]);
 173       }
 174     }
 175   }
 176
 177   XFree(children);
 178 }
 179
 180
 181 //! Adds a window's strut to the screen's list of reserved spaces
 182 void OBScreen::addStrut(otk::Strut *strut)
 183 {
 184   _struts.push_back(strut);
 185 }
 186
 187
 188 //! Removes a window's strut from the screen's list of reserved spaces
 189 void OBScreen::removeStrut(otk::Strut *strut)
 190 {
 191   _struts.remove(strut);
 192 }
 193
 194
 195 void OBScreen::calcArea()
 196 {
 197   otk::Rect old_area = _area;
 198
 199 /*
 200 #ifdef    XINERAMA
 201   // reset to the full areas
 202   if (isXineramaActive())
 203     xineramaUsableArea = getXineramaAreas();
 204 #endif // XINERAMA
 205 */
 206
 207   /* these values represent offsets from the screen edge
 208    * we look for the biggest offset on each edge and then apply them
 209    * all at once
 210    * do not be confused by the similarity to the names of Rect's members
 211    */
 212   unsigned int current_left = 0, current_right = 0, current_top = 0,
 213     current_bottom = 0;
 214
 215   StrutList::const_iterator it = _struts.begin(), end = _struts.end();
 216
 217   for(; it != end; ++it) {
 218     otk::Strut *strut = *it;
 219     if (strut->left > current_left)
 220       current_left = strut->left;
 221     if (strut->top > current_top)
 222       current_top = strut->top;
 223     if (strut->right > current_right)
 224       current_right = strut->right;
 225     if (strut->bottom > current_bottom)
 226       current_bottom = strut->bottom;
 227   }
 228
 229   _area.setRect(current_left, current_top,
 230                 _info->width() - (current_left + current_right),
 231                 _info->height() - (current_top + current_bottom));
 232
 233 /*
 234 #ifdef    XINERAMA
 235   if (isXineramaActive()) {
 236     // keep each of the ximerama-defined areas inside the strut
 237     RectList::iterator xit, xend = xineramaUsableArea.end();
 238     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 239       if (xit->x() < usableArea.x()) {
 240         xit->setX(usableArea.x());
 241         xit->setWidth(xit->width() - usableArea.x());
 242       }
 243       if (xit->y() < usableArea.y()) {
 244         xit->setY(usableArea.y());
 245         xit->setHeight(xit->height() - usableArea.y());
 246       }
 247       if (xit->x() + xit->width() > usableArea.width())
 248         xit->setWidth(usableArea.width() - xit->x());
 249       if (xit->y() + xit->height() > usableArea.height())
 250         xit->setHeight(usableArea.height() - xit->y());
 251     }
 252   }
 253 #endif // XINERAMA
 254 */
 255
 256   if (old_area != _area)
 257     // XXX: re-maximize windows
 258
 259   setWorkArea();
 260 }
 261
 262
 263 void OBScreen::setClientList()
 264 {
 265   Window *windows;
 266
 267   // create an array of the window ids
 268   if (clients.size() > 0) {
 269     Window *win_it;
 270
 271     windows = new Window[clients.size()];
 272     win_it = windows;
 273     ClientList::const_iterator it = clients.begin();
 274     const ClientList::const_iterator end = clients.end();
 275     for (; it != end; ++it, ++win_it)
 276       *win_it = (*it)->window();
 277   } else
 278     windows = (Window*) 0;
 279
 280   Openbox::instance->property()->set(_info->rootWindow(),
 281                                      otk::OBProperty::net_client_list,
 282                                      otk::OBProperty::Atom_Window,
 283                                      windows, clients.size());
 284
 285   if (clients.size())
 286     delete [] windows;
 287
 288   setStackingList();
 289 }
 290
 291
 292 void OBScreen::setStackingList()
 293 {
 294   // The below comment is wrong now hopefully :> but ill keep it here for
 295   // reference anyways
 296   /*
 297     Get the stacking order from all of the workspaces.
 298     We start with the current workspace so that the sticky windows will be
 299     in the right order on the current workspace.
 300   */
 301   /*
 302   Openbox::instance->property()->set(_info->getRootWindow(),
 303                                      otk::OBProperty::net_client_list_stacking,
 304                                      otk::OBProperty::Atom_Window,
 305                                      _stacking, _stacking.size());
 306   */
 307 }
 308
 309
 310 void OBScreen::setWorkArea() {
 311   unsigned long area[] = { _area.x(), _area.y(),
 312                            _area.width(), _area.height() };
 313   Openbox::instance->property()->set(_info->rootWindow(),
 314                                      otk::OBProperty::net_workarea,
 315                                      otk::OBProperty::Atom_Cardinal,
 316                                      area, 4);
 317   /*
 318   if (workspacesList.size() > 0) {
 319     unsigned long *dims = new unsigned long[4 * workspacesList.size()];
 320     for (unsigned int i = 0, m = workspacesList.size(); i < m; ++i) {
 321       // XXX: this could be different for each workspace
 322       const otk::Rect &area = availableArea();
 323       dims[(i * 4) + 0] = area.x();
 324       dims[(i * 4) + 1] = area.y();
 325       dims[(i * 4) + 2] = area.width();
 326       dims[(i * 4) + 3] = area.height();
 327     }
 328     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 329                otk::OBProperty::Atom_Cardinal,
 330                dims, 4 * workspacesList.size());
 331     delete [] dims;
 332   } else
 333     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 334                otk::OBProperty::Atom_Cardinal, 0, 0);
 335   */
 336 }
 337
 338
 339 void OBScreen::manageWindow(Window window)
 340 {
 341   OBClient *client = 0;
 342   XWMHints *wmhint;
 343   XSetWindowAttributes attrib_set;
 344
 345   // is the window a docking app
 346   if ((wmhint = XGetWMHints(otk::OBDisplay::display, window))) {
 347     if ((wmhint->flags & StateHint) &&
 348         wmhint->initial_state == WithdrawnState) {
 349       //slit->addClient(w); // XXX: make dock apps work!
 350       XFree(wmhint);
 351       return;
 352     }
 353     XFree(wmhint);
 354   }
 355
 356   otk::OBDisplay::grab();
 357
 358   // choose the events we want to receive on the CLIENT window
 359   attrib_set.event_mask = OBClient::event_mask;
 360   attrib_set.do_not_propagate_mask = OBClient::no_propagate_mask;
 361   XChangeWindowAttributes(otk::OBDisplay::display, window,
 362                           CWEventMask|CWDontPropagate, &attrib_set);
 363
 364   // create the OBClient class, which gets all of the hints on the window
 365   client = new OBClient(_number, window);
 366   // register for events
 367   Openbox::instance->registerHandler(window, client);
 368   // add to the wm's map
 369   Openbox::instance->addClient(window, client);
 370
 371   // we dont want a border on the client
 372   client->toggleClientBorder(false);
 373
 374   // specify that if we exit, the window should not be destroyed and should be
 375   // reparented back to root automatically
 376   XChangeSaveSet(otk::OBDisplay::display, window, SetModeInsert);
 377
 378   if (!client->positionRequested()) {
 379     // XXX: position the window intelligenty
 380   }
 381
 382   // create the decoration frame for the client window
 383   client->frame = new OBFrame(client, &_style);
 384
 385   // add to the wm's map
 386   Openbox::instance->addClient(client->frame->window(), client);
 387   Openbox::instance->addClient(client->frame->plate(), client);
 388   Openbox::instance->addClient(client->frame->titlebar(), client);
 389   Openbox::instance->addClient(client->frame->label(), client);
 390   Openbox::instance->addClient(client->frame->button_max(), client);
 391   Openbox::instance->addClient(client->frame->button_iconify(), client);
 392   Openbox::instance->addClient(client->frame->button_stick(), client);
 393   Openbox::instance->addClient(client->frame->button_close(), client);
 394   Openbox::instance->addClient(client->frame->handle(), client);
 395   Openbox::instance->addClient(client->frame->grip_left(), client);
 396   Openbox::instance->addClient(client->frame->grip_right(), client);
 397
 398   // XXX: if on the current desktop..
 399   client->frame->show();
 400
 401   // XXX: handle any requested states such as shaded/maximized
 402
 403   otk::OBDisplay::ungrab();
 404
 405   // add to the screen's list
 406   clients.push_back(client);
 407   // this puts into the stacking order, then raises it
 408   _stacking.push_back(client);
 409   restack(true, client);
 410   // update the root properties
 411   setClientList();
 412
 413   Openbox::instance->bindings()->grabButtons(true, client);
 414 }
 415
 416
 417 void OBScreen::unmanageWindow(OBClient *client)
 418 {
 419   OBFrame *frame = client->frame;
 420
 421   Openbox::instance->bindings()->grabButtons(false, client);
 422
 423   // XXX: pass around focus if this window was focused
 424
 425   // remove from the wm's map
 426   Openbox::instance->removeClient(client->window());
 427   Openbox::instance->removeClient(frame->window());
 428   Openbox::instance->removeClient(frame->plate());
 429   Openbox::instance->removeClient(frame->titlebar());
 430   Openbox::instance->removeClient(frame->label());
 431   Openbox::instance->removeClient(frame->button_max());
 432   Openbox::instance->removeClient(frame->button_iconify());
 433   Openbox::instance->removeClient(frame->button_stick());
 434   Openbox::instance->removeClient(frame->button_close());
 435   Openbox::instance->removeClient(frame->handle());
 436   Openbox::instance->removeClient(frame->grip_left());
 437   Openbox::instance->removeClient(frame->grip_right());
 438   // unregister for handling events
 439   Openbox::instance->clearHandler(client->window());
 440
 441   // remove the window from our save set
 442   XChangeSaveSet(otk::OBDisplay::display, client->window(), SetModeDelete);
 443
 444   // we dont want events no more
 445   XSelectInput(otk::OBDisplay::display, client->window(), NoEventMask);
 446
 447   frame->hide();
 448
 449   // give the client its border back
 450   client->toggleClientBorder(true);
 451
 452   delete client->frame;
 453   client->frame = 0;
 454
 455   // remove from the screen's lists
 456   _stacking.remove(client);
 457   clients.remove(client);
 458   delete client;
 459
 460   // update the root properties
 461   setClientList();
 462 }
 463
 464 void OBScreen::restack(bool raise, OBClient *client)
 465 {
 466   const int layer = client->layer();
 467   std::vector<Window> wins;
 468
 469   _stacking.remove(client);
 470
 471   // the stacking list is from highest to lowest
 472
 473   ClientList::iterator it = _stacking.begin(), end = _stacking.end();
 474   // insert the windows above this window
 475   for (; it != end; ++it) {
 476     if ((*it)->layer() < layer || (raise && (*it)->layer() == layer))
 477       break;
 478     wins.push_back((*it)->frame->window());
 479   }
 480   // insert our client
 481   wins.push_back(client->frame->window());
 482   _stacking.insert(it, client);
 483   // insert the remaining below this window
 484   for (; it != end; ++it)
 485     wins.push_back((*it)->frame->window());
 486
 487   XRestackWindows(otk::OBDisplay::display, &wins[0], wins.size());
 488 }
 489
 490 }