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
 127   // unmanage all windows
 128   while (!clients.empty())
 129     unmanageWindow(clients.front());
 130
 131   XDestroyWindow(otk::OBDisplay::display, _focuswindow);
 132
 133   delete _image_control;
 134 }
 135
 136
 137 void OBScreen::manageExisting()
 138 {
 139   unsigned int i, j, nchild;
 140   Window r, p, *children;
 141   XQueryTree(otk::OBDisplay::display, _info->rootWindow(), &r, &p,
 142              &children, &nchild);
 143
 144   // preen the window list of all icon windows... for better dockapp support
 145   for (i = 0; i < nchild; i++) {
 146     if (children[i] == None) continue;
 147
 148     XWMHints *wmhints = XGetWMHints(otk::OBDisplay::display,
 149                                     children[i]);
 150
 151     if (wmhints) {
 152       if ((wmhints->flags & IconWindowHint) &&
 153           (wmhints->icon_window != children[i])) {
 154         for (j = 0; j < nchild; j++) {
 155           if (children[j] == wmhints->icon_window) {
 156             children[j] = None;
 157             break;
 158           }
 159         }
 160       }
 161
 162       XFree(wmhints);
 163     }
 164   }
 165
 166   // manage shown windows
 167   for (i = 0; i < nchild; ++i) {
 168     if (children[i] == None)
 169       continue;
 170
 171     XWindowAttributes attrib;
 172     if (XGetWindowAttributes(otk::OBDisplay::display, children[i], &attrib)) {
 173       if (attrib.override_redirect) continue;
 174
 175       if (attrib.map_state != IsUnmapped) {
 176         manageWindow(children[i]);
 177       }
 178     }
 179   }
 180
 181   XFree(children);
 182 }
 183
 184
 185 //! Adds a window's strut to the screen's list of reserved spaces
 186 void OBScreen::addStrut(otk::Strut *strut)
 187 {
 188   _struts.push_back(strut);
 189 }
 190
 191
 192 //! Removes a window's strut from the screen's list of reserved spaces
 193 void OBScreen::removeStrut(otk::Strut *strut)
 194 {
 195   _struts.remove(strut);
 196 }
 197
 198
 199 void OBScreen::calcArea()
 200 {
 201   otk::Rect old_area = _area;
 202
 203 /*
 204 #ifdef    XINERAMA
 205   // reset to the full areas
 206   if (isXineramaActive())
 207     xineramaUsableArea = getXineramaAreas();
 208 #endif // XINERAMA
 209 */
 210
 211   /* these values represent offsets from the screen edge
 212    * we look for the biggest offset on each edge and then apply them
 213    * all at once
 214    * do not be confused by the similarity to the names of Rect's members
 215    */
 216   unsigned int current_left = 0, current_right = 0, current_top = 0,
 217     current_bottom = 0;
 218
 219   StrutList::const_iterator it = _struts.begin(), end = _struts.end();
 220
 221   for(; it != end; ++it) {
 222     otk::Strut *strut = *it;
 223     if (strut->left > current_left)
 224       current_left = strut->left;
 225     if (strut->top > current_top)
 226       current_top = strut->top;
 227     if (strut->right > current_right)
 228       current_right = strut->right;
 229     if (strut->bottom > current_bottom)
 230       current_bottom = strut->bottom;
 231   }
 232
 233   _area.setRect(current_left, current_top,
 234                 _info->width() - (current_left + current_right),
 235                 _info->height() - (current_top + current_bottom));
 236
 237 /*
 238 #ifdef    XINERAMA
 239   if (isXineramaActive()) {
 240     // keep each of the ximerama-defined areas inside the strut
 241     RectList::iterator xit, xend = xineramaUsableArea.end();
 242     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 243       if (xit->x() < usableArea.x()) {
 244         xit->setX(usableArea.x());
 245         xit->setWidth(xit->width() - usableArea.x());
 246       }
 247       if (xit->y() < usableArea.y()) {
 248         xit->setY(usableArea.y());
 249         xit->setHeight(xit->height() - usableArea.y());
 250       }
 251       if (xit->x() + xit->width() > usableArea.width())
 252         xit->setWidth(usableArea.width() - xit->x());
 253       if (xit->y() + xit->height() > usableArea.height())
 254         xit->setHeight(usableArea.height() - xit->y());
 255     }
 256   }
 257 #endif // XINERAMA
 258 */
 259
 260   if (old_area != _area)
 261     // XXX: re-maximize windows
 262
 263   setWorkArea();
 264 }
 265
 266
 267 void OBScreen::setClientList()
 268 {
 269   Window *windows;
 270   unsigned int size = clients.size();
 271
 272   // create an array of the window ids
 273   if (size > 0) {
 274     Window *win_it;
 275
 276     windows = new Window[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, size);
 289
 290   if (size)
 291     delete [] windows;
 292
 293   setStackingList();
 294 }
 295
 296
 297 void OBScreen::setStackingList()
 298 {
 299   Window *windows;
 300   unsigned int size = _stacking.size();
 301
 302   assert(size == clients.size()); // just making sure.. :)
 303
 304
 305   // create an array of the window ids
 306   if (size > 0) {
 307     Window *win_it;
 308
 309     windows = new Window[size];
 310     win_it = windows;
 311     ClientList::const_iterator it = _stacking.begin();
 312     const ClientList::const_iterator end = _stacking.end();
 313     for (; it != end; ++it, ++win_it)
 314       *win_it = (*it)->window();
 315   } else
 316     windows = (Window*) 0;
 317
 318   Openbox::instance->property()->set(_info->rootWindow(),
 319                                      otk::OBProperty::net_client_list_stacking,
 320                                      otk::OBProperty::Atom_Window,
 321                                      windows, size);
 322
 323   if (size)
 324     delete [] windows;
 325 }
 326
 327
 328 void OBScreen::setWorkArea() {
 329   unsigned long area[] = { _area.x(), _area.y(),
 330                            _area.width(), _area.height() };
 331   Openbox::instance->property()->set(_info->rootWindow(),
 332                                      otk::OBProperty::net_workarea,
 333                                      otk::OBProperty::Atom_Cardinal,
 334                                      area, 4);
 335   /*
 336   if (workspacesList.size() > 0) {
 337     unsigned long *dims = new unsigned long[4 * workspacesList.size()];
 338     for (unsigned int i = 0, m = workspacesList.size(); i < m; ++i) {
 339       // XXX: this could be different for each workspace
 340       const otk::Rect &area = availableArea();
 341       dims[(i * 4) + 0] = area.x();
 342       dims[(i * 4) + 1] = area.y();
 343       dims[(i * 4) + 2] = area.width();
 344       dims[(i * 4) + 3] = area.height();
 345     }
 346     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 347                otk::OBProperty::Atom_Cardinal,
 348                dims, 4 * workspacesList.size());
 349     delete [] dims;
 350   } else
 351     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 352                otk::OBProperty::Atom_Cardinal, 0, 0);
 353   */
 354 }
 355
 356
 357 void OBScreen::manageWindow(Window window)
 358 {
 359   OBClient *client = 0;
 360   XWMHints *wmhint;
 361   XSetWindowAttributes attrib_set;
 362
 363   // is the window a docking app
 364   if ((wmhint = XGetWMHints(otk::OBDisplay::display, window))) {
 365     if ((wmhint->flags & StateHint) &&
 366         wmhint->initial_state == WithdrawnState) {
 367       //slit->addClient(w); // XXX: make dock apps work!
 368       XFree(wmhint);
 369       return;
 370     }
 371     XFree(wmhint);
 372   }
 373
 374   otk::OBDisplay::grab();
 375
 376   // choose the events we want to receive on the CLIENT window
 377   attrib_set.event_mask = OBClient::event_mask;
 378   attrib_set.do_not_propagate_mask = OBClient::no_propagate_mask;
 379   XChangeWindowAttributes(otk::OBDisplay::display, window,
 380                           CWEventMask|CWDontPropagate, &attrib_set);
 381
 382   // create the OBClient class, which gets all of the hints on the window
 383   client = new OBClient(_number, window);
 384   // register for events
 385   Openbox::instance->registerHandler(window, client);
 386   // add to the wm's map
 387   Openbox::instance->addClient(window, client);
 388
 389   // we dont want a border on the client
 390   client->toggleClientBorder(false);
 391
 392   // specify that if we exit, the window should not be destroyed and should be
 393   // reparented back to root automatically
 394   XChangeSaveSet(otk::OBDisplay::display, window, SetModeInsert);
 395
 396   if (!client->positionRequested()) {
 397     // XXX: position the window intelligenty
 398   }
 399
 400   // create the decoration frame for the client window
 401   client->frame = new OBFrame(client, &_style);
 402
 403   // add to the wm's map
 404   Openbox::instance->addClient(client->frame->window(), client);
 405   Openbox::instance->addClient(client->frame->plate(), client);
 406   Openbox::instance->addClient(client->frame->titlebar(), client);
 407   Openbox::instance->addClient(client->frame->label(), client);
 408   Openbox::instance->addClient(client->frame->button_max(), client);
 409   Openbox::instance->addClient(client->frame->button_iconify(), client);
 410   Openbox::instance->addClient(client->frame->button_stick(), client);
 411   Openbox::instance->addClient(client->frame->button_close(), client);
 412   Openbox::instance->addClient(client->frame->handle(), client);
 413   Openbox::instance->addClient(client->frame->grip_left(), client);
 414   Openbox::instance->addClient(client->frame->grip_right(), client);
 415
 416   // XXX: if on the current desktop..
 417   client->frame->show();
 418
 419   // XXX: handle any requested states such as shaded/maximized
 420
 421   otk::OBDisplay::ungrab();
 422
 423   // add to the screen's list
 424   clients.push_back(client);
 425   // this puts into the stacking order, then raises it
 426   _stacking.push_back(client);
 427   restack(true, client);
 428   // update the root properties
 429   setClientList();
 430
 431   Openbox::instance->bindings()->grabButtons(true, client);
 432 }
 433
 434
 435 void OBScreen::unmanageWindow(OBClient *client)
 436 {
 437   OBFrame *frame = client->frame;
 438
 439   Openbox::instance->bindings()->grabButtons(false, client);
 440
 441   // remove from the stacking order
 442   _stacking.remove(client);
 443
 444   // pass around focus if this window was focused XXX do this better!
 445   if (Openbox::instance->focusedClient() == client) {
 446     OBClient *newfocus = 0;
 447     if (!_stacking.empty())
 448       newfocus = _stacking.front();
 449     if (! (newfocus && newfocus->focus()))
 450       client->unfocus();
 451   }
 452
 453   // remove from the wm's map
 454   Openbox::instance->removeClient(client->window());
 455   Openbox::instance->removeClient(frame->window());
 456   Openbox::instance->removeClient(frame->plate());
 457   Openbox::instance->removeClient(frame->titlebar());
 458   Openbox::instance->removeClient(frame->label());
 459   Openbox::instance->removeClient(frame->button_max());
 460   Openbox::instance->removeClient(frame->button_iconify());
 461   Openbox::instance->removeClient(frame->button_stick());
 462   Openbox::instance->removeClient(frame->button_close());
 463   Openbox::instance->removeClient(frame->handle());
 464   Openbox::instance->removeClient(frame->grip_left());
 465   Openbox::instance->removeClient(frame->grip_right());
 466   // unregister for handling events
 467   Openbox::instance->clearHandler(client->window());
 468
 469   // remove the window from our save set
 470   XChangeSaveSet(otk::OBDisplay::display, client->window(), SetModeDelete);
 471
 472   // we dont want events no more
 473   XSelectInput(otk::OBDisplay::display, client->window(), NoEventMask);
 474
 475   frame->hide();
 476
 477   // give the client its border back
 478   client->toggleClientBorder(true);
 479
 480   delete client->frame;
 481   client->frame = 0;
 482
 483   // remove from the screen's list
 484   clients.remove(client);
 485   delete client;
 486
 487   // update the root properties
 488   setClientList();
 489 }
 490
 491 void OBScreen::restack(bool raise, OBClient *client)
 492 {
 493   const int layer = client->layer();
 494   std::vector<Window> wins;
 495
 496   _stacking.remove(client);
 497
 498   // the stacking list is from highest to lowest
 499
 500   ClientList::iterator it = _stacking.begin(), end = _stacking.end();
 501   // insert the windows above this window
 502   for (; it != end; ++it) {
 503     if ((*it)->layer() < layer || (raise && (*it)->layer() == layer))
 504       break;
 505     wins.push_back((*it)->frame->window());
 506   }
 507   // insert our client
 508   wins.push_back(client->frame->window());
 509   _stacking.insert(it, client);
 510   // insert the remaining below this window
 511   for (; it != end; ++it)
 512     wins.push_back((*it)->frame->window());
 513
 514   XRestackWindows(otk::OBDisplay::display, &wins[0], wins.size());
 515   setStackingList();
 516 }
 517
 518 }