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   XSelectInput(otk::OBDisplay::display, _info->rootWindow(), NoEventMask);
 126   XSync(otk::OBDisplay::display, False);
 127
 128   XDestroyWindow(otk::OBDisplay::display, _focuswindow);
 129
 130   // unmanage all windows
 131   while (!clients.empty())
 132     unmanageWindow(clients.front());
 133
 134   delete _image_control;
 135 }
 136
 137
 138 void OBScreen::manageExisting()
 139 {
 140   unsigned int i, j, nchild;
 141   Window r, p, *children;
 142   XQueryTree(otk::OBDisplay::display, _info->rootWindow(), &r, &p,
 143              &children, &nchild);
 144
 145   // preen the window list of all icon windows... for better dockapp support
 146   for (i = 0; i < nchild; i++) {
 147     if (children[i] == None) continue;
 148
 149     XWMHints *wmhints = XGetWMHints(otk::OBDisplay::display,
 150                                     children[i]);
 151
 152     if (wmhints) {
 153       if ((wmhints->flags & IconWindowHint) &&
 154           (wmhints->icon_window != children[i])) {
 155         for (j = 0; j < nchild; j++) {
 156           if (children[j] == wmhints->icon_window) {
 157             children[j] = None;
 158             break;
 159           }
 160         }
 161       }
 162
 163       XFree(wmhints);
 164     }
 165   }
 166
 167   // manage shown windows
 168   for (i = 0; i < nchild; ++i) {
 169     if (children[i] == None)
 170       continue;
 171
 172     XWindowAttributes attrib;
 173     if (XGetWindowAttributes(otk::OBDisplay::display, children[i], &attrib)) {
 174       if (attrib.override_redirect) continue;
 175
 176       if (attrib.map_state != IsUnmapped) {
 177         manageWindow(children[i]);
 178       }
 179     }
 180   }
 181
 182   XFree(children);
 183 }
 184
 185
 186 //! Adds a window's strut to the screen's list of reserved spaces
 187 void OBScreen::addStrut(otk::Strut *strut)
 188 {
 189   _struts.push_back(strut);
 190 }
 191
 192
 193 //! Removes a window's strut from the screen's list of reserved spaces
 194 void OBScreen::removeStrut(otk::Strut *strut)
 195 {
 196   _struts.remove(strut);
 197 }
 198
 199
 200 void OBScreen::calcArea()
 201 {
 202   otk::Rect old_area = _area;
 203
 204 /*
 205 #ifdef    XINERAMA
 206   // reset to the full areas
 207   if (isXineramaActive())
 208     xineramaUsableArea = getXineramaAreas();
 209 #endif // XINERAMA
 210 */
 211
 212   /* these values represent offsets from the screen edge
 213    * we look for the biggest offset on each edge and then apply them
 214    * all at once
 215    * do not be confused by the similarity to the names of Rect's members
 216    */
 217   unsigned int current_left = 0, current_right = 0, current_top = 0,
 218     current_bottom = 0;
 219
 220   StrutList::const_iterator it = _struts.begin(), end = _struts.end();
 221
 222   for(; it != end; ++it) {
 223     otk::Strut *strut = *it;
 224     if (strut->left > current_left)
 225       current_left = strut->left;
 226     if (strut->top > current_top)
 227       current_top = strut->top;
 228     if (strut->right > current_right)
 229       current_right = strut->right;
 230     if (strut->bottom > current_bottom)
 231       current_bottom = strut->bottom;
 232   }
 233
 234   _area.setRect(current_left, current_top,
 235                 _info->width() - (current_left + current_right),
 236                 _info->height() - (current_top + current_bottom));
 237
 238 /*
 239 #ifdef    XINERAMA
 240   if (isXineramaActive()) {
 241     // keep each of the ximerama-defined areas inside the strut
 242     RectList::iterator xit, xend = xineramaUsableArea.end();
 243     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 244       if (xit->x() < usableArea.x()) {
 245         xit->setX(usableArea.x());
 246         xit->setWidth(xit->width() - usableArea.x());
 247       }
 248       if (xit->y() < usableArea.y()) {
 249         xit->setY(usableArea.y());
 250         xit->setHeight(xit->height() - usableArea.y());
 251       }
 252       if (xit->x() + xit->width() > usableArea.width())
 253         xit->setWidth(usableArea.width() - xit->x());
 254       if (xit->y() + xit->height() > usableArea.height())
 255         xit->setHeight(usableArea.height() - xit->y());
 256     }
 257   }
 258 #endif // XINERAMA
 259 */
 260
 261   if (old_area != _area)
 262     // XXX: re-maximize windows
 263
 264   setWorkArea();
 265 }
 266
 267
 268 void OBScreen::setClientList()
 269 {
 270   Window *windows;
 271
 272   // create an array of the window ids
 273   if (clients.size() > 0) {
 274     Window *win_it;
 275
 276     windows = new Window[clients.size()];
 277     win_it = windows;
 278     ClientList::const_iterator it = clients.begin();
 279     const ClientList::const_iterator end = clients.end();
 280     for (; it != end; ++it, ++win_it)
 281       *win_it = (*it)->window();
 282   } else
 283     windows = (Window*) 0;
 284
 285   Openbox::instance->property()->set(_info->rootWindow(),
 286                                      otk::OBProperty::net_client_list,
 287                                      otk::OBProperty::Atom_Window,
 288                                      windows, clients.size());
 289
 290   if (clients.size())
 291     delete [] windows;
 292
 293   setStackingList();
 294 }
 295
 296
 297 void OBScreen::setStackingList()
 298 {
 299   // The below comment is wrong now hopefully :> but ill keep it here for
 300   // reference anyways
 301   /*
 302     Get the stacking order from all of the workspaces.
 303     We start with the current workspace so that the sticky windows will be
 304     in the right order on the current workspace.
 305   */
 306   /*
 307   Openbox::instance->property()->set(_info->getRootWindow(),
 308                                      otk::OBProperty::net_client_list_stacking,
 309                                      otk::OBProperty::Atom_Window,
 310                                      _stacking, _stacking.size());
 311   */
 312 }
 313
 314
 315 void OBScreen::setWorkArea() {
 316   unsigned long area[] = { _area.x(), _area.y(),
 317                            _area.width(), _area.height() };
 318   Openbox::instance->property()->set(_info->rootWindow(),
 319                                      otk::OBProperty::net_workarea,
 320                                      otk::OBProperty::Atom_Cardinal,
 321                                      area, 4);
 322   /*
 323   if (workspacesList.size() > 0) {
 324     unsigned long *dims = new unsigned long[4 * workspacesList.size()];
 325     for (unsigned int i = 0, m = workspacesList.size(); i < m; ++i) {
 326       // XXX: this could be different for each workspace
 327       const otk::Rect &area = availableArea();
 328       dims[(i * 4) + 0] = area.x();
 329       dims[(i * 4) + 1] = area.y();
 330       dims[(i * 4) + 2] = area.width();
 331       dims[(i * 4) + 3] = area.height();
 332     }
 333     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 334                otk::OBProperty::Atom_Cardinal,
 335                dims, 4 * workspacesList.size());
 336     delete [] dims;
 337   } else
 338     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 339                otk::OBProperty::Atom_Cardinal, 0, 0);
 340   */
 341 }
 342
 343
 344 void OBScreen::manageWindow(Window window)
 345 {
 346   OBClient *client = 0;
 347   XWMHints *wmhint;
 348   XSetWindowAttributes attrib_set;
 349
 350   // is the window a docking app
 351   if ((wmhint = XGetWMHints(otk::OBDisplay::display, window))) {
 352     if ((wmhint->flags & StateHint) &&
 353         wmhint->initial_state == WithdrawnState) {
 354       //slit->addClient(w); // XXX: make dock apps work!
 355       XFree(wmhint);
 356       return;
 357     }
 358     XFree(wmhint);
 359   }
 360
 361   otk::OBDisplay::grab();
 362
 363   // choose the events we want to receive on the CLIENT window
 364   attrib_set.event_mask = OBClient::event_mask;
 365   attrib_set.do_not_propagate_mask = OBClient::no_propagate_mask;
 366   XChangeWindowAttributes(otk::OBDisplay::display, window,
 367                           CWEventMask|CWDontPropagate, &attrib_set);
 368
 369   // create the OBClient class, which gets all of the hints on the window
 370   client = new OBClient(_number, window);
 371   // register for events
 372   Openbox::instance->registerHandler(window, client);
 373   // add to the wm's map
 374   Openbox::instance->addClient(window, client);
 375
 376   // we dont want a border on the client
 377   client->toggleClientBorder(false);
 378
 379   // specify that if we exit, the window should not be destroyed and should be
 380   // reparented back to root automatically
 381   XChangeSaveSet(otk::OBDisplay::display, window, SetModeInsert);
 382
 383   if (!client->positionRequested()) {
 384     // XXX: position the window intelligenty
 385   }
 386
 387   // create the decoration frame for the client window
 388   client->frame = new OBFrame(client, &_style);
 389
 390   // add to the wm's map
 391   Openbox::instance->addClient(client->frame->window(), client);
 392   Openbox::instance->addClient(client->frame->plate(), client);
 393   Openbox::instance->addClient(client->frame->titlebar(), client);
 394   Openbox::instance->addClient(client->frame->label(), client);
 395   Openbox::instance->addClient(client->frame->button_max(), client);
 396   Openbox::instance->addClient(client->frame->button_iconify(), client);
 397   Openbox::instance->addClient(client->frame->button_stick(), client);
 398   Openbox::instance->addClient(client->frame->button_close(), client);
 399   Openbox::instance->addClient(client->frame->handle(), client);
 400   Openbox::instance->addClient(client->frame->grip_left(), client);
 401   Openbox::instance->addClient(client->frame->grip_right(), client);
 402
 403   // XXX: if on the current desktop..
 404   client->frame->show();
 405
 406   // XXX: handle any requested states such as shaded/maximized
 407
 408   otk::OBDisplay::ungrab();
 409
 410   // add to the screen's list
 411   clients.push_back(client);
 412   // this puts into the stacking order, then raises it
 413   _stacking.push_back(client);
 414   restack(true, client);
 415   // update the root properties
 416   setClientList();
 417
 418   Openbox::instance->bindings()->grabButtons(true, client);
 419 }
 420
 421
 422 void OBScreen::unmanageWindow(OBClient *client)
 423 {
 424   OBFrame *frame = client->frame;
 425
 426   Openbox::instance->bindings()->grabButtons(false, client);
 427
 428   // XXX: pass around focus if this window was focused
 429
 430   // remove from the wm's map
 431   Openbox::instance->removeClient(client->window());
 432   Openbox::instance->removeClient(frame->window());
 433   Openbox::instance->removeClient(frame->plate());
 434   Openbox::instance->removeClient(frame->titlebar());
 435   Openbox::instance->removeClient(frame->label());
 436   Openbox::instance->removeClient(frame->button_max());
 437   Openbox::instance->removeClient(frame->button_iconify());
 438   Openbox::instance->removeClient(frame->button_stick());
 439   Openbox::instance->removeClient(frame->button_close());
 440   Openbox::instance->removeClient(frame->handle());
 441   Openbox::instance->removeClient(frame->grip_left());
 442   Openbox::instance->removeClient(frame->grip_right());
 443   // unregister for handling events
 444   Openbox::instance->clearHandler(client->window());
 445
 446   // remove the window from our save set
 447   XChangeSaveSet(otk::OBDisplay::display, client->window(), SetModeDelete);
 448
 449   // we dont want events no more
 450   XSelectInput(otk::OBDisplay::display, client->window(), NoEventMask);
 451
 452   frame->hide();
 453
 454   // give the client its border back
 455   client->toggleClientBorder(true);
 456
 457   delete client->frame;
 458   client->frame = 0;
 459
 460   // remove from the screen's lists
 461   _stacking.remove(client);
 462   clients.remove(client);
 463   delete client;
 464
 465   // update the root properties
 466   setClientList();
 467 }
 468
 469 void OBScreen::restack(bool raise, OBClient *client)
 470 {
 471   const int layer = client->layer();
 472   std::vector<Window> wins;
 473
 474   _stacking.remove(client);
 475
 476   // the stacking list is from highest to lowest
 477
 478   ClientList::iterator it = _stacking.begin(), end = _stacking.end();
 479   // insert the windows above this window
 480   for (; it != end; ++it) {
 481     if ((*it)->layer() < layer || (raise && (*it)->layer() == layer))
 482       break;
 483     wins.push_back((*it)->frame->window());
 484   }
 485   // insert our client
 486   wins.push_back(client->frame->window());
 487   _stacking.insert(it, client);
 488   // insert the remaining below this window
 489   for (; it != end; ++it)
 490     wins.push_back((*it)->frame->window());
 491
 492   XRestackWindows(otk::OBDisplay::display, &wins[0], wins.size());
 493 }
 494
 495 }