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 static bool running;
  30 static int anotherWMRunning(Display *display, XErrorEvent *) {
  31   printf(_("Another window manager already running on display %s.\n"),
  32          DisplayString(display));
  33   running = true;
  34   return -1;
  35 }
  36
  37
  38 namespace ob {
  39
  40
  41 OBScreen::OBScreen(int screen)
  42   : _number(screen),
  43     _root(screen)
  44 {
  45   assert(screen >= 0); assert(screen < ScreenCount(otk::OBDisplay::display));
  46   _info = otk::OBDisplay::screenInfo(screen);
  47
  48   ::running = false;
  49   XErrorHandler old = XSetErrorHandler(::anotherWMRunning);
  50   XSelectInput(otk::OBDisplay::display, _info->rootWindow(),
  51                OBScreen::event_mask);
  52   XSync(otk::OBDisplay::display, false);
  53   XSetErrorHandler(old);
  54
  55   _managed = !::running;
  56   if (! _managed) return; // was unable to manage the screen
  57
  58   printf(_("Managing screen %d: visual 0x%lx, depth %d\n"),
  59          _number, XVisualIDFromVisual(_info->visual()), _info->depth());
  60
  61   Openbox::instance->property()->set(_info->rootWindow(),
  62                                      otk::OBProperty::openbox_pid,
  63                                      otk::OBProperty::Atom_Cardinal,
  64                                      (unsigned long) getpid());
  65
  66   // set the mouse cursor for the root window (the default cursor)
  67   XDefineCursor(otk::OBDisplay::display, _info->rootWindow(),
  68                 Openbox::instance->cursors().session);
  69
  70   // initialize the shit that is used for all drawing on the screen
  71   _image_control = new otk::BImageControl(Openbox::instance->timerManager(),
  72                                           _info, true);
  73   _image_control->installRootColormap();
  74   _root_cmap_installed = True;
  75
  76   // initialize the screen's style
  77   _style.setImageControl(_image_control);
  78   std::string stylepath;
  79   python_get_string("theme", &stylepath);
  80   otk::Configuration sconfig(false);
  81   sconfig.setFile(otk::expandTilde(stylepath));
  82   if (!sconfig.load()) {
  83     sconfig.setFile(otk::expandTilde(DEFAULTSTYLE));
  84     if (!sconfig.load()) {
  85       printf(_("Unable to load default style: %s. Aborting.\n"), DEFAULTSTYLE);
  86       ::exit(1);
  87     }
  88   }
  89   _style.load(sconfig);
  90
  91   // Set the netwm atoms for geomtery and viewport
  92   unsigned long geometry[] = { _info->width(),
  93                                _info->height() };
  94   Openbox::instance->property()->set(_info->rootWindow(),
  95                                      otk::OBProperty::net_desktop_geometry,
  96                                      otk::OBProperty::Atom_Cardinal,
  97                                      geometry, 2);
  98   unsigned long viewport[] = { 0, 0 };
  99   Openbox::instance->property()->set(_info->rootWindow(),
 100                                      otk::OBProperty::net_desktop_viewport,
 101                                      otk::OBProperty::Atom_Cardinal,
 102                                      viewport, 2);
 103
 104   // create the window which gets focus when no clients get it
 105   XSetWindowAttributes attr;
 106   attr.override_redirect = true;
 107   _focuswindow = XCreateWindow(otk::OBDisplay::display, _info->rootWindow(),
 108                                -100, -100, 1, 1, 0, 0, InputOnly,
 109                                _info->visual(), CWOverrideRedirect, &attr);
 110   XMapWindow(otk::OBDisplay::display, _focuswindow);
 111
 112   // these may be further updated if any pre-existing windows are found in
 113   // the manageExising() function
 114   setClientList();     // initialize the client lists, which will be empty
 115   calcArea();          // initialize the available working area
 116 }
 117
 118
 119 OBScreen::~OBScreen()
 120 {
 121   if (! _managed) return;
 122
 123   // unmanage all windows
 124   while (!clients.empty())
 125     unmanageWindow(clients.front());
 126
 127   delete _image_control;
 128 }
 129
 130
 131 void OBScreen::manageExisting()
 132 {
 133   unsigned int i, j, nchild;
 134   Window r, p, *children;
 135   XQueryTree(otk::OBDisplay::display, _info->rootWindow(), &r, &p,
 136              &children, &nchild);
 137
 138   // preen the window list of all icon windows... for better dockapp support
 139   for (i = 0; i < nchild; i++) {
 140     if (children[i] == None) continue;
 141
 142     XWMHints *wmhints = XGetWMHints(otk::OBDisplay::display,
 143                                     children[i]);
 144
 145     if (wmhints) {
 146       if ((wmhints->flags & IconWindowHint) &&
 147           (wmhints->icon_window != children[i])) {
 148         for (j = 0; j < nchild; j++) {
 149           if (children[j] == wmhints->icon_window) {
 150             children[j] = None;
 151             break;
 152           }
 153         }
 154       }
 155
 156       XFree(wmhints);
 157     }
 158   }
 159
 160   // manage shown windows
 161   for (i = 0; i < nchild; ++i) {
 162     if (children[i] == None)
 163       continue;
 164
 165     XWindowAttributes attrib;
 166     if (XGetWindowAttributes(otk::OBDisplay::display, children[i], &attrib)) {
 167       if (attrib.override_redirect) continue;
 168
 169       if (attrib.map_state != IsUnmapped) {
 170         manageWindow(children[i]);
 171       }
 172     }
 173   }
 174
 175   XFree(children);
 176 }
 177
 178
 179 //! Adds a window's strut to the screen's list of reserved spaces
 180 void OBScreen::addStrut(otk::Strut *strut)
 181 {
 182   _struts.push_back(strut);
 183 }
 184
 185
 186 //! Removes a window's strut from the screen's list of reserved spaces
 187 void OBScreen::removeStrut(otk::Strut *strut)
 188 {
 189   _struts.remove(strut);
 190 }
 191
 192
 193 void OBScreen::calcArea()
 194 {
 195   otk::Rect old_area = _area;
 196
 197 /*
 198 #ifdef    XINERAMA
 199   // reset to the full areas
 200   if (isXineramaActive())
 201     xineramaUsableArea = getXineramaAreas();
 202 #endif // XINERAMA
 203 */
 204
 205   /* these values represent offsets from the screen edge
 206    * we look for the biggest offset on each edge and then apply them
 207    * all at once
 208    * do not be confused by the similarity to the names of Rect's members
 209    */
 210   unsigned int current_left = 0, current_right = 0, current_top = 0,
 211     current_bottom = 0;
 212
 213   StrutList::const_iterator it = _struts.begin(), end = _struts.end();
 214
 215   for(; it != end; ++it) {
 216     otk::Strut *strut = *it;
 217     if (strut->left > current_left)
 218       current_left = strut->left;
 219     if (strut->top > current_top)
 220       current_top = strut->top;
 221     if (strut->right > current_right)
 222       current_right = strut->right;
 223     if (strut->bottom > current_bottom)
 224       current_bottom = strut->bottom;
 225   }
 226
 227   _area.setRect(current_left, current_top,
 228                 _info->width() - (current_left + current_right),
 229                 _info->height() - (current_top + current_bottom));
 230
 231 /*
 232 #ifdef    XINERAMA
 233   if (isXineramaActive()) {
 234     // keep each of the ximerama-defined areas inside the strut
 235     RectList::iterator xit, xend = xineramaUsableArea.end();
 236     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 237       if (xit->x() < usableArea.x()) {
 238         xit->setX(usableArea.x());
 239         xit->setWidth(xit->width() - usableArea.x());
 240       }
 241       if (xit->y() < usableArea.y()) {
 242         xit->setY(usableArea.y());
 243         xit->setHeight(xit->height() - usableArea.y());
 244       }
 245       if (xit->x() + xit->width() > usableArea.width())
 246         xit->setWidth(usableArea.width() - xit->x());
 247       if (xit->y() + xit->height() > usableArea.height())
 248         xit->setHeight(usableArea.height() - xit->y());
 249     }
 250   }
 251 #endif // XINERAMA
 252 */
 253
 254   if (old_area != _area)
 255     // XXX: re-maximize windows
 256
 257   setWorkArea();
 258 }
 259
 260
 261 void OBScreen::setClientList()
 262 {
 263   Window *windows;
 264
 265   // create an array of the window ids
 266   if (clients.size() > 0) {
 267     Window *win_it;
 268
 269     windows = new Window[clients.size()];
 270     win_it = windows;
 271     ClientList::const_iterator it = clients.begin();
 272     const ClientList::const_iterator end = clients.end();
 273     for (; it != end; ++it, ++win_it)
 274       *win_it = (*it)->window();
 275   } else
 276     windows = (Window*) 0;
 277
 278   Openbox::instance->property()->set(_info->rootWindow(),
 279                                      otk::OBProperty::net_client_list,
 280                                      otk::OBProperty::Atom_Window,
 281                                      windows, clients.size());
 282
 283   if (clients.size())
 284     delete [] windows;
 285
 286   setStackingList();
 287 }
 288
 289
 290 void OBScreen::setStackingList()
 291 {
 292   // The below comment is wrong now hopefully :> but ill keep it here for
 293   // reference anyways
 294   /*
 295     Get the stacking order from all of the workspaces.
 296     We start with the current workspace so that the sticky windows will be
 297     in the right order on the current workspace.
 298   */
 299   /*
 300   Openbox::instance->property()->set(_info->getRootWindow(),
 301                                      otk::OBProperty::net_client_list_stacking,
 302                                      otk::OBProperty::Atom_Window,
 303                                      _stacking, _stacking.size());
 304   */
 305 }
 306
 307
 308 void OBScreen::setWorkArea() {
 309   unsigned long area[] = { _area.x(), _area.y(),
 310                            _area.width(), _area.height() };
 311   Openbox::instance->property()->set(_info->rootWindow(),
 312                                      otk::OBProperty::net_workarea,
 313                                      otk::OBProperty::Atom_Cardinal,
 314                                      area, 4);
 315   /*
 316   if (workspacesList.size() > 0) {
 317     unsigned long *dims = new unsigned long[4 * workspacesList.size()];
 318     for (unsigned int i = 0, m = workspacesList.size(); i < m; ++i) {
 319       // XXX: this could be different for each workspace
 320       const otk::Rect &area = availableArea();
 321       dims[(i * 4) + 0] = area.x();
 322       dims[(i * 4) + 1] = area.y();
 323       dims[(i * 4) + 2] = area.width();
 324       dims[(i * 4) + 3] = area.height();
 325     }
 326     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 327                otk::OBProperty::Atom_Cardinal,
 328                dims, 4 * workspacesList.size());
 329     delete [] dims;
 330   } else
 331     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 332                otk::OBProperty::Atom_Cardinal, 0, 0);
 333   */
 334 }
 335
 336
 337 void OBScreen::manageWindow(Window window)
 338 {
 339   OBClient *client = 0;
 340   XWMHints *wmhint;
 341   XSetWindowAttributes attrib_set;
 342
 343   // is the window a docking app
 344   if ((wmhint = XGetWMHints(otk::OBDisplay::display, window))) {
 345     if ((wmhint->flags & StateHint) &&
 346         wmhint->initial_state == WithdrawnState) {
 347       //slit->addClient(w); // XXX: make dock apps work!
 348       XFree(wmhint);
 349       return;
 350     }
 351     XFree(wmhint);
 352   }
 353
 354   otk::OBDisplay::grab();
 355
 356   // choose the events we want to receive on the CLIENT window
 357   attrib_set.event_mask = OBClient::event_mask;
 358   attrib_set.do_not_propagate_mask = OBClient::no_propagate_mask;
 359   XChangeWindowAttributes(otk::OBDisplay::display, window,
 360                           CWEventMask|CWDontPropagate, &attrib_set);
 361
 362   // create the OBClient class, which gets all of the hints on the window
 363   client = new OBClient(_number, window);
 364   // register for events
 365   Openbox::instance->registerHandler(window, client);
 366   // add to the wm's map
 367   Openbox::instance->addClient(window, client);
 368
 369   // we dont want a border on the client
 370   client->toggleClientBorder(false);
 371
 372   // specify that if we exit, the window should not be destroyed and should be
 373   // reparented back to root automatically
 374   XChangeSaveSet(otk::OBDisplay::display, window, SetModeInsert);
 375
 376   if (!client->positionRequested()) {
 377     // XXX: position the window intelligenty
 378   }
 379
 380   // create the decoration frame for the client window
 381   client->frame = new OBFrame(client, &_style);
 382
 383   // add to the wm's map
 384   Openbox::instance->addClient(client->frame->window(), client);
 385   Openbox::instance->addClient(client->frame->plate(), client);
 386   Openbox::instance->addClient(client->frame->titlebar(), client);
 387   Openbox::instance->addClient(client->frame->label(), client);
 388   Openbox::instance->addClient(client->frame->button_max(), client);
 389   Openbox::instance->addClient(client->frame->button_iconify(), client);
 390   Openbox::instance->addClient(client->frame->button_stick(), client);
 391   Openbox::instance->addClient(client->frame->button_close(), client);
 392   Openbox::instance->addClient(client->frame->handle(), client);
 393   Openbox::instance->addClient(client->frame->grip_left(), client);
 394   Openbox::instance->addClient(client->frame->grip_right(), client);
 395
 396   // XXX: if on the current desktop..
 397   client->frame->show();
 398
 399   // XXX: handle any requested states such as shaded/maximized
 400
 401   otk::OBDisplay::ungrab();
 402
 403   // add to the screen's list
 404   clients.push_back(client);
 405   // update the root properties
 406   setClientList();
 407
 408   Openbox::instance->bindings()->grabButtons(true, client);
 409 }
 410
 411
 412 void OBScreen::unmanageWindow(OBClient *client)
 413 {
 414   OBFrame *frame = client->frame;
 415
 416   Openbox::instance->bindings()->grabButtons(false, client);
 417
 418   // XXX: pass around focus if this window was focused
 419
 420   // remove from the wm's map
 421   Openbox::instance->removeClient(client->window());
 422   Openbox::instance->removeClient(frame->window());
 423   Openbox::instance->removeClient(frame->plate());
 424   Openbox::instance->removeClient(frame->titlebar());
 425   Openbox::instance->removeClient(frame->label());
 426   Openbox::instance->removeClient(frame->button_max());
 427   Openbox::instance->removeClient(frame->button_iconify());
 428   Openbox::instance->removeClient(frame->button_stick());
 429   Openbox::instance->removeClient(frame->button_close());
 430   Openbox::instance->removeClient(frame->handle());
 431   Openbox::instance->removeClient(frame->grip_left());
 432   Openbox::instance->removeClient(frame->grip_right());
 433   // unregister for handling events
 434   Openbox::instance->clearHandler(client->window());
 435
 436   // remove the window from our save set
 437   XChangeSaveSet(otk::OBDisplay::display, client->window(), SetModeDelete);
 438
 439   // we dont want events no more
 440   XSelectInput(otk::OBDisplay::display, client->window(), NoEventMask);
 441
 442   frame->hide();
 443
 444   // give the client its border back
 445   client->toggleClientBorder(true);
 446
 447   delete client->frame;
 448   client->frame = 0;
 449
 450   // remove from the screen's list
 451   clients.remove(client);
 452   delete client;
 453
 454   // update the root properties
 455   setClientList();
 456 }
 457
 458 }